US2718312A - Material handling apparatus - Google Patents

Material handling apparatus Download PDF

Info

Publication number
US2718312A
US2718312A US233151A US23315151A US2718312A US 2718312 A US2718312 A US 2718312A US 233151 A US233151 A US 233151A US 23315151 A US23315151 A US 23315151A US 2718312 A US2718312 A US 2718312A
Authority
US
United States
Prior art keywords
bucket
turret
boom
rotation
pivotally connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US233151A
Inventor
John S Pilch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US233151A priority Critical patent/US2718312A/en
Application granted granted Critical
Publication of US2718312A publication Critical patent/US2718312A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08Superstructures; Supports for superstructures
    • E02F9/085Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/42Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425Drive systems for dipper-arms, backhoes or the like

Definitions

  • This invention relates to material handling apparatus and has particular reference to a new and improved device which is capable of use as a backhoe or trencher adapted for use with a tractor and which derives its power from the tractor engine and which embodies a lling or levelling member.
  • An object is to provide new and improved means for rotation of the operating mechanism which allows a greater degree of rotation and which mechanism requires but a single cylinder and eliminates the necessity of eX- pensive chains, sprockets and gears.
  • Another object is to provide a device of the type set forth with an arrangement providing higher speed of turning of the operating mechanism.
  • Another object is to provide a hydraulically operated device of the type set forth with means Afor cushioning the beginning and ending of the rotative movement of the mechanism.
  • Another object is to provide a unit of the type set forth which may be mounted on a conventional tractor without requiring a completely special unit and wherein a narrow turret may be employed, thereby providing good visibility for the operator and which is so designed that the operator sits close to the turret and looks over or beside it.
  • Another object is to provide a device of the type set forth which eliminates the use of chains in the rotating mechanism and therefore eliminates the backlash and play inherent in chain constructions and still provides a construction wherein the operator has perfect control of the boom position at all times.
  • Fig. 1 is a side view of a unit embodying the invention in operative position
  • Fig. 2 is a side View, similar to Fig. 1, but showing the unit with the boom in travelling position;
  • Fig. 3 is a top or plan view of the unit with the boom in operative position
  • Fig. 4 is a schematic view showing the hydraulic system of the unit
  • Fig. 5 is a front view of the tractor with the apparatus mounted thereon;
  • Fig. 6 is a view taken on line 6-6 of Fig. 1 looking in the direction of the arrows and showing the tractor with the apparatus mounted thereon;
  • Fig. 7 is a View generally similar to Fig. 6 vbut with the dozer blade and stabilizing mechanism removed;
  • Fig. 8 is a fragmentary side view showing a portion of the apparatus
  • Fig. 9 is a view, similar to Fig. 8, but showing the opposide side of the device.
  • Fig. l is a fragmentary sectional view taken on line 10-10 of Fig. 8, looking in the direction of the arrows;
  • Fig. l1 is a fragmentary sectional View taken on line 311-11 of Fig. 8, looking in the direction of the arrows;
  • Fig. 12 is a fragmentary view showing the turret actuating mechanism and hydraulic system therefor;
  • Fig. 13 is a fragmentary view of the turret rotating mechanism
  • Fig. 14 is a sectional View taken on line 14-14 of Fig. 13, looking in the direction of the arrows;
  • Fig. 15 is a View similar to Fig. 14 but showing the position of the mechanism at another point of boom rotation;
  • Fig. 16 is a fragmentary view showing the arrangement for stabilizing or eliminating or limiting the oscillation of the front wheels and axle;
  • Fig. 17 is a fragmentary View of the arrangement shown in Fig. 16, but on an enlarged scale;
  • Fig. 18 is a sectional View taken on line 18-18 of Fig. 12 looking in the direction of the arrows and the pressure relief and vacuum eliminator apparatus;
  • Figs. 19 through 21 are side views of the reversible bucket construction.
  • the apparatus is shown embodied in a tractor comprising a frame 10, supporting the engine 11 and supported on the wheels 12.
  • the dozer blade 13 At that end of the tractor which is normally the rear of the tractor is positioned the dozer blade 13, as shown in Figs. 1, 2 and 3, and this blade 13 is connected to the tractor frame by the spaced pivotable supports 14 and 15 which are provided adjacent the opposite sides of the tractor and which are pivotally connected to dozer blade 13 and brackets 16 on frame 10.
  • Cylinder 17 and piston rod 18 are pivotally connected to the supporting frame 19 and dozer Vblade 13 at 20 and 21 respectively and are adapted to raise or lower blade 13 to desired position. These cylinders and pistons are individually or separately controllable allowing dozer 13 to be oscillated both for dozing and stabilizing on uneven terrain.
  • the stabilizing members 22 and 23 In telescoping relation in the opposite sides of ldozer blade 13 are the stabilizing members 22 and 23 which may be pulled out to desired position and which are provided with stabilizing pads 24 and 25 respectively adjacent their free ends which pads are adapted to rest on the ground for stabilizing the apparatus in operation. Pins 30 lock members 22 and 23 in adjusted position.
  • the dozer blade forms part of the stabilizing mechanism.
  • the tubular members 26 may be provided in alignment with the front axle 27 and telescoping bars 28 are positioned within said tubular members 26 and pins 29 in aligned openings in said tubular members 26 limit the movement of said telescoping bars 28 thereby eliminating or limiting, as desired, any oscillation of the front wheels and axle.
  • Alternate pivot vconnection 37a for boom cylinder 41 is provided for use in those cases where less height of lift but additional power is desired.
  • Dipper stick 44 is pivotally connected to the free end of boom 40 at 45 and cylinder 46 and piston and piston rod 47 are pivotally connected to boom 40 and free end of dipper stick 44 respectively to actuate dipper stick 44 relative to boom 40.
  • Dipper stick 44 carries bucket 48 which may be rotated relative to dipper stick 44 to which it is pivotally connected at 49 by means of cylinder 50 and piston and piston rod member 51 which are connected to dipper stick 44 and bucket 48 respectively at 52 and 53 respectively.
  • the operators seat 54 which is at one side of the tractor and facing the rear thereof whereby boom may be positioned over the tractor beside the operator when travelling, as shown in Fig. 2.
  • the cylinder 55 which is pivotally connected at 56 to lug 57 on tractor frame and piston 58 and piston rod 59 are provided for rotating turret 31 for positioning boom 40 and bucket 48 to desired angular relation as may be necessary for desired working position during operation of the device.
  • the end 60 of piston rod 59 is pivotally connected to link 61 and link 62.
  • Link 61 is pivotally connected at 63 to lug 64 which is secured to the side, top or bottom of supporting frame 19.
  • Link 62 is pivotally connected at 65 to lever 66 to which is secured upright 67 which extends upward through turret 31 and is secured thereto adjacent the upper end of the turret so that rotation of upright 67 effects simultaneous rotation of turret 31.
  • Figs. 14 and 15 the boom 40 is shown adjacent its opposite ends of travel which is in the direction indicated by the arrow in Fig. 14 to the position shown in Fig. 15 from which it will be seen that this turning or rotation is approximately 270 degrees.
  • This construction allows the use of but a single cylinder and piston for rotating the turret and provides a greater angle of rotation with a more simple and economical construction which does not employ any expensive chains, sprockets or gears.
  • the hydraulic system comprises the hydraulic pump 68, reservoir or uid tank 69 and control valves 70.
  • Pump 68 is connected to reservoir 69 by pipe line 71 and said pump 68 is connected to control valves 70 by line 72.
  • Cylinder 55 is connected to control valves 70 by lines 73 and 74.
  • Reservoir 69 is connected to valves by line 75 and a branch 76 of line 75 is connected to pressure relief and vacuum eliminator members 77 which in turn are connected by lines 78 and 79 to the opposite ends of cylinder 55.
  • the members 77 each have a passage 80 connected to line 76 and communicating through check valve 81 with lines 78 and 79 respectively through passages 82 and 83.
  • Passage 83 communicates through check valve 84 and passage 85 with passage 80.
  • This arrangement provides a hydraulic cushion in the system on each side of the piston 58 in cylinder 55 thus cushioning the start and stop of rotation of turret 31 and boom 40.
  • the hydraulic system employs a pair of tanks or reservoirs 69, pumps 68 and banks of valves 70, although other arrangements could be employed.
  • the hydraulic cylinder 85 and piston and piston rod 85A is provided for steering the tractor and is connected to valves 70 by means of lines 86 and 87 and said steering valves are controlled by control levers 88 and 89.
  • Control levers 90 are connected through links 91 and control rods 92 with valves 70 for actuating the same.
  • Accumulator or hydraulic shock absorber 93 is provided in the system on the left side of the cylinders 41 for lifting the boom and the hydraulic shock absorbers or accumulators 94 and 95 may be provided in the lines on the opposite sides of the turret actuating piston 55 instead of the pressure relief valve if desired.
  • Cylinder 46 is connected to valve 70 by lines 96 and 97. Cylinders 41 are connected to valve 70 by lines 98 and 99, cylinders 17 are connected by lines 100 and 101 and cylinder 55 is connected to the valve by lines 102 and 103.
  • the various hydraulic hoses for the dipper stick cylinder, boom cylinder and the like are coiled around turret 31 as shown particularly in Fig. 2 and are secured to the upper end of said turret. If desired they may be positioned within a container or shoe. As the turret 31 is rotated, the hoses merely coil and uncoil depending upon the direction of rotation of the turret and without any twisting of the hoses. It will be seen that this construction eliminates the need for swivel joint couplings for the hose lines which couplings are both expensive and trouble- SGme.
  • Figs. 19 through 20 is shown the reversible bucket arrangement which allows merely the reversal of the bucket to convert the device from a loader to a trencher and vice versa without the addition of any additional parts thereby eliminating the necessity of the operator carrying any such parts for changes in the field.
  • dipper stick 44 is provided with the reinforcing structure 104 and also carries the closure 105 for closing the bucket 48 on high lifts as for dumping in a high truck.
  • the closure 105 is stationary on the dipper stick and does not interfere with other uses of the apparatus and operates only when the bucket is adapted for use as a trencher as shown in Fig. 20, in which case the bucket is rotated until the bucket is closed by closure 105.
  • piston rod 51 for rotating bucket 48 is connected to bucket 48 by pivotable links 106 and 107 of which link 106 is pivotally connected to said piston rod and to any desired one of the hitch points 108 on bucket 48 and link 107 is pivotally connected to said piston rod 51 and to a lug 109 which is offset on dipper stick 44 as shown.
  • the various hitch points 108 allow adjustment for desired amounts of rotation and speed of rotation.
  • the bucket pivot 110 could be offset instead of lug 109. This oiset, in either case, allows suflicient rotation or swing that the bucket can be used without a door.
  • Figs. 19 through 21 of the drawings show the bucket adapted for loading and Fig. 21 shows the bucket adapted for trenching.
  • Fig. 20 shows the bucket adapted for trenching.
  • the bucket is shown in closed position in dotted lines.
  • This arrangement allows use of the bucket as loader or trencher by merely reversing the bucket and the linkage arrangement allows wide angle rotation regardless of which use is being made of the bucket.
  • This construction allows changing of piston rod connection from connecting point 111 to point 112, as shown in Figs. 19 and 20, without the necessity of changing hoses in the eld.
  • piston rod 47 is connected to point 111 as shown in Fig. 19 and where the bucket is used as a trencher, the piston rod 47 is connected at 112 to give desired power for trenching.
  • a support a turret mounted for rotation on said support, a bucket carrying boom pivotally connected to said turret, a pivotable lever connected to said turret for eiecting rota tion thereof, a pair of pivotally connected links, one of said links being pivotally connected to said lever and the other of said links being pivotally connected to said support and actuating means connected to said links and said support for effecting pivotal movement of said lever and thereby pivoting said turret and boom.
  • a support a turret mounted for rotation on said support, a bucket carrying boom pivotally connected to said turret, a pivotable lever connected to said turret for effecting rotation thereof, a pair of pivotally connected links, one of said links being pivotally connected to said lever and the other of said links being pivotally connected to said support and actuating means connected to the pivotal connection between said links and said support for effecting pivotal movement of said lever and thereby pivoting said turret and boom,

Description

Sept. 20, 1955 J. s. PILCH MATERIAL HANDLING APPARATUS lO'Sheet's-'Sheet l Filed June 23, 1951 M N- D O O- C. A n. m" Il' w q m. Awv QQ `nu l l- A Y OW wm. o .T Q uw QV G hm.. QV 1H u? v o E d5 mv v O QV l. .5w v .Nl i .NF o
Gttorneg Sept. 20, 1955 J. s. PILCH t 2,718,312
MATERIAL HANDLING APPARATUS Filed June 25, 1951 10 Sheets-Sheet 2 Elnm Bnentor JOH N 'PILCH-lv BWM sept. 2o, 1955 J. s. PILCH 2,718,312
MATERIAL HANDLING APPARATUS Filed June 25, 1951 10 Sheets-Sheet 5 :inventor JOH N S. Fl LC H Cttorneg Sept 20# 1955 J. s, PILCH 2,718,312
MATERIAL HANDLING APPARATUS Filed June .25, 1951 l0 Sheets-Sheet 4 lul I A94- a w A, o 7o 'rs 86 |03 7o Le 85 Imventor JOHN S. 'PILCH Sept. 20, 1955 J. s. PILCH 2,718,312
MATERIAL HANDLING APPARATUS Filed June 23, 1951 l0 Sheets-Sheet 5 Jol-1N` s'. PM CH gg i Sept. 20, 1955 J. s. PILCH 2,718,312
MATERIAL HANDLING APPARATUS Filed June 25. 1951 10 Sheets-Sheet 6 Suvenfor JOHN sLPaLCr-l Sept. 20, 1955 J. s. PILCH 2,718,312
' MATERIAL HANDLING APPARATUS Filed June 23, 1951 10 Sheets-Sheet 7 Suventor Jo HN s. P Lc r1 Sept. 20, 1955 f J. s. PILCH Y 2,718,312
MATERIAL HANDLING APPARATUS i Filed June A25, 195i Y* 1o sheets-sheet Ya Sept. 20, 1955 J. S. PILCH MATERIAL HANDLING APPARATUS rileduune 25, 1951 lO Sheets-Sheet 9 INVENTOR JOHN S. PILCH f uw@ ATTORN Y Sept. 20, 1955 .1. s. PILCH 2,718,312
MATERIALHANDLING APPARATUS Filed June 25V, 1951 10 Sheets-Sheet lO l INVENTOR JOHN S. 'FILC'H lnited States Patent'O MATERIAL HANDLING APPARATUS John S. Pilch, Ware, Mass.
Application June 23, 1951, serial No. 233,151
2 Claims. (Cl. 212--66) This invention relates to material handling apparatus and has particular reference to a new and improved device which is capable of use as a backhoe or trencher adapted for use with a tractor and which derives its power from the tractor engine and which embodies a lling or levelling member.
An object is to provide new and improved means for rotation of the operating mechanism which allows a greater degree of rotation and which mechanism requires but a single cylinder and eliminates the necessity of eX- pensive chains, sprockets and gears.
Another object is to provide a device of the type set forth with an arrangement providing higher speed of turning of the operating mechanism.
Another object is to provide a hydraulically operated device of the type set forth with means Afor cushioning the beginning and ending of the rotative movement of the mechanism.
Another object is to provide a unit of the type set forth which may be mounted on a conventional tractor without requiring a completely special unit and wherein a narrow turret may be employed, thereby providing good visibility for the operator and which is so designed that the operator sits close to the turret and looks over or beside it.
Another object is to provide a device of the type set forth which eliminates the use of chains in the rotating mechanism and therefore eliminates the backlash and play inherent in chain constructions and still provides a construction wherein the operator has perfect control of the boom position at all times.
Other objects and advantages of the invention will be apparent from the following description and the accompanying drawings wherein the preferred form hasbeen shown by way of illustration only.
Referring to the drawings:
Fig. 1 is a side view of a unit embodying the invention in operative position; A
Fig. 2 is a side View, similar to Fig. 1, but showing the unit with the boom in travelling position;
Fig. 3 is a top or plan view of the unit with the boom in operative position;
Fig. 4 is a schematic view showing the hydraulic system of the unit;
Fig. 5 is a front view of the tractor with the apparatus mounted thereon;
Fig. 6 is a view taken on line 6-6 of Fig. 1 looking in the direction of the arrows and showing the tractor with the apparatus mounted thereon;
Fig. 7 is a View generally similar to Fig. 6 vbut with the dozer blade and stabilizing mechanism removed;
Fig. 8 is a fragmentary side view showing a portion of the apparatus;
Fig. 9 is a view, similar to Fig. 8, but showing the opposide side of the device;
Fig. l() is a fragmentary sectional view taken on line 10-10 of Fig. 8, looking in the direction of the arrows;
Fig. l1 is a fragmentary sectional View taken on line 311-11 of Fig. 8, looking in the direction of the arrows;
lce
Fig. 12 is a fragmentary view showing the turret actuating mechanism and hydraulic system therefor;
Fig. 13 is a fragmentary view of the turret rotating mechanism;
Fig. 14 is a sectional View taken on line 14-14 of Fig. 13, looking in the direction of the arrows;
Fig. 15 is a View similar to Fig. 14 but showing the position of the mechanism at another point of boom rotation;
Fig. 16 is a fragmentary view showing the arrangement for stabilizing or eliminating or limiting the oscillation of the front wheels and axle;
Fig. 17 is a fragmentary View of the arrangement shown in Fig. 16, but on an enlarged scale;
Fig. 18 is a sectional View taken on line 18-18 of Fig. 12 looking in the direction of the arrows and the pressure relief and vacuum eliminator apparatus; and
Figs. 19 through 21 are side views of the reversible bucket construction.
Referring more particularly to the drawings wherein similar reference characters designate corresponding parts throughout, the apparatus is shown embodied in a tractor comprising a frame 10, supporting the engine 11 and supported on the wheels 12.
At that end of the tractor which is normally the rear of the tractor is positioned the dozer blade 13, as shown in Figs. 1, 2 and 3, and this blade 13 is connected to the tractor frame by the spaced pivotable supports 14 and 15 which are provided adjacent the opposite sides of the tractor and which are pivotally connected to dozer blade 13 and brackets 16 on frame 10.
Cylinder 17 and piston rod 18 are pivotally connected to the supporting frame 19 and dozer Vblade 13 at 20 and 21 respectively and are adapted to raise or lower blade 13 to desired position. These cylinders and pistons are individually or separately controllable allowing dozer 13 to be oscillated both for dozing and stabilizing on uneven terrain.
In telescoping relation in the opposite sides of ldozer blade 13 are the stabilizing members 22 and 23 which may be pulled out to desired position and which are provided with stabilizing pads 24 and 25 respectively adjacent their free ends which pads are adapted to rest on the ground for stabilizing the apparatus in operation. Pins 30 lock members 22 and 23 in adjusted position. Thus the dozer blade forms part of the stabilizing mechanism. In addition the tubular members 26 may be provided in alignment with the front axle 27 and telescoping bars 28 are positioned within said tubular members 26 and pins 29 in aligned openings in said tubular members 26 limit the movement of said telescoping bars 28 thereby eliminating or limiting, as desired, any oscillation of the front wheels and axle.
On supporting frame 19 which is supported on tractor frame 10 isv positioned rotary turret 31 which has lower ange 32 over which are positioned the locking plates 33 and 34 for retaining turret 31 in operative position on supporting frame 19 while allowing rotation thereof and on turret 31 are secured the spaced uprights 35 and 36 having the aligned pivot openings 37 and havingthe lower projecting members 38 and 39 with aligned pivot openings and to which is pivotally connected the end of boom 40 which is raised and lowered by cylinders 41 connected to pivots 37 on uprights 35 and 36 and which are provided with pistons having piston rods 42 each of which is pivotally connected to boom 40 at 43.
Alternate pivot vconnection 37a for boom cylinder 41 is provided for use in those cases where less height of lift but additional power is desired.
Dipper stick 44 is pivotally connected to the free end of boom 40 at 45 and cylinder 46 and piston and piston rod 47 are pivotally connected to boom 40 and free end of dipper stick 44 respectively to actuate dipper stick 44 relative to boom 40. Dipper stick 44 carries bucket 48 which may be rotated relative to dipper stick 44 to which it is pivotally connected at 49 by means of cylinder 50 and piston and piston rod member 51 which are connected to dipper stick 44 and bucket 48 respectively at 52 and 53 respectively.
On the tractor is provided the operators seat 54 which is at one side of the tractor and facing the rear thereof whereby boom may be positioned over the tractor beside the operator when travelling, as shown in Fig. 2.
The cylinder 55 which is pivotally connected at 56 to lug 57 on tractor frame and piston 58 and piston rod 59 are provided for rotating turret 31 for positioning boom 40 and bucket 48 to desired angular relation as may be necessary for desired working position during operation of the device.
The end 60 of piston rod 59 is pivotally connected to link 61 and link 62. Link 61 is pivotally connected at 63 to lug 64 which is secured to the side, top or bottom of supporting frame 19. Link 62 is pivotally connected at 65 to lever 66 to which is secured upright 67 which extends upward through turret 31 and is secured thereto adjacent the upper end of the turret so that rotation of upright 67 effects simultaneous rotation of turret 31.
In Figs. 14 and 15 the boom 40 is shown adjacent its opposite ends of travel which is in the direction indicated by the arrow in Fig. 14 to the position shown in Fig. 15 from which it will be seen that this turning or rotation is approximately 270 degrees.
This construction allows the use of but a single cylinder and piston for rotating the turret and provides a greater angle of rotation with a more simple and economical construction which does not employ any expensive chains, sprockets or gears.
The hydraulic system comprises the hydraulic pump 68, reservoir or uid tank 69 and control valves 70.
Pump 68 is connected to reservoir 69 by pipe line 71 and said pump 68 is connected to control valves 70 by line 72. Cylinder 55 is connected to control valves 70 by lines 73 and 74. Reservoir 69 is connected to valves by line 75 and a branch 76 of line 75 is connected to pressure relief and vacuum eliminator members 77 which in turn are connected by lines 78 and 79 to the opposite ends of cylinder 55.
The members 77 each have a passage 80 connected to line 76 and communicating through check valve 81 with lines 78 and 79 respectively through passages 82 and 83. Passage 83 communicates through check valve 84 and passage 85 with passage 80.
This arrangement provides a hydraulic cushion in the system on each side of the piston 58 in cylinder 55 thus cushioning the start and stop of rotation of turret 31 and boom 40.
The hydraulic system employs a pair of tanks or reservoirs 69, pumps 68 and banks of valves 70, although other arrangements could be employed.
The hydraulic cylinder 85 and piston and piston rod 85A is provided for steering the tractor and is connected to valves 70 by means of lines 86 and 87 and said steering valves are controlled by control levers 88 and 89.
Control levers 90 are connected through links 91 and control rods 92 with valves 70 for actuating the same.
Accumulator or hydraulic shock absorber 93 is provided in the system on the left side of the cylinders 41 for lifting the boom and the hydraulic shock absorbers or accumulators 94 and 95 may be provided in the lines on the opposite sides of the turret actuating piston 55 instead of the pressure relief valve if desired.
Cylinder 46 is connected to valve 70 by lines 96 and 97. Cylinders 41 are connected to valve 70 by lines 98 and 99, cylinders 17 are connected by lines 100 and 101 and cylinder 55 is connected to the valve by lines 102 and 103.
important feature of the present invention is that the various hydraulic hoses for the dipper stick cylinder, boom cylinder and the like are coiled around turret 31 as shown particularly in Fig. 2 and are secured to the upper end of said turret. If desired they may be positioned within a container or shoe. As the turret 31 is rotated, the hoses merely coil and uncoil depending upon the direction of rotation of the turret and without any twisting of the hoses. It will be seen that this construction eliminates the need for swivel joint couplings for the hose lines which couplings are both expensive and trouble- SGme.
ln Figs. 19 through 20 is shown the reversible bucket arrangement which allows merely the reversal of the bucket to convert the device from a loader to a trencher and vice versa without the addition of any additional parts thereby eliminating the necessity of the operator carrying any such parts for changes in the field.
Also a construction is provided which gives a greater degree of bucket rotation.
ln this arrangement dipper stick 44 is provided with the reinforcing structure 104 and also carries the closure 105 for closing the bucket 48 on high lifts as for dumping in a high truck.
The closure 105 is stationary on the dipper stick and does not interfere with other uses of the apparatus and operates only when the bucket is adapted for use as a trencher as shown in Fig. 20, in which case the bucket is rotated until the bucket is closed by closure 105.
In this construction piston rod 51 for rotating bucket 48 is connected to bucket 48 by pivotable links 106 and 107 of which link 106 is pivotally connected to said piston rod and to any desired one of the hitch points 108 on bucket 48 and link 107 is pivotally connected to said piston rod 51 and to a lug 109 which is offset on dipper stick 44 as shown. The various hitch points 108 allow adjustment for desired amounts of rotation and speed of rotation. If desired, the bucket pivot 110 could be offset instead of lug 109. This oiset, in either case, allows suflicient rotation or swing that the bucket can be used without a door.
The wide angle of rotation of the bucket 48 by piston rod 51 is illustrated in Figs. 19 through 21 of the drawings wherein Figs. 19 and 20 show the bucket adapted for loading and Fig. 21 shows the bucket adapted for trenching. In Fig. 20, the bucket is shown in closed position in dotted lines.
This arrangement allows use of the bucket as loader or trencher by merely reversing the bucket and the linkage arrangement allows wide angle rotation regardless of which use is being made of the bucket.
This construction allows changing of piston rod connection from connecting point 111 to point 112, as shown in Figs. 19 and 20, without the necessity of changing hoses in the eld.
Due to the fact that cylinder 46 needs necessarily be fairly large for Yreasons of strength and displacement purposes to allow a fairly quick return of the dipper stick into normal digging position, it would, therefore, have a considerable amount of power when pushing on piston rod 47 and therefore when the device is used as a loader, piston rod 47 is connected to point 111 as shown in Fig. 19 and where the bucket is used as a trencher, the piston rod 47 is connected at 112 to give desired power for trenching.
It is pointed out that when the device is used as a loader with the bucket in question shown in Fig. 19, that the bucket is on a dipper stick 44 and the rotation of both the bucket and dipper stick are controlled with the rotation of the bucket effected either directly or through a linkage that the throttle discharge of the bucket can be controlled when the device is employed as a loader, thus providing a loader arrangement with the bucket on a dipper stick and having a controlled discharge.
From the ,foregoing it will be seen that I have provided means for obtaining all of the objects and advantages of the invention.
I claim:
1. In a device of the character described, a support, a turret mounted for rotation on said support, a bucket carrying boom pivotally connected to said turret, a pivotable lever connected to said turret for eiecting rota tion thereof, a pair of pivotally connected links, one of said links being pivotally connected to said lever and the other of said links being pivotally connected to said support and actuating means connected to said links and said support for effecting pivotal movement of said lever and thereby pivoting said turret and boom.
2. In a device of the character described, a support, a turret mounted for rotation on said support, a bucket carrying boom pivotally connected to said turret, a pivotable lever connected to said turret for effecting rotation thereof, a pair of pivotally connected links, one of said links being pivotally connected to said lever and the other of said links being pivotally connected to said support and actuating means connected to the pivotal connection between said links and said support for effecting pivotal movement of said lever and thereby pivoting said turret and boom,
References Cited in the file of this patent UNITED STATES PATENTS D. 163,873 Pilch Apr. 10, 1951 590,990 Kilgore Oct. 5, 1897 615,984 Harting Dec. 13, 1898 651,648 Breitenstein June 12, 1900 2,109,388 Heller Feb. 22, 1938 2,304,075 Davidson et al. Dec. 8, 1942 2,344,584 Austin Mar. 21, 1944 2,387,764 Maywell Oct. 30, 1945 2,411,498 Billings Nov. 26, 1946 2,462,926 Wilson et al. Mar 1, 1949 2,493,718 Chronic et al Jan. 3, 1950 2,502,681 Swanson Apr. 4, 1950 2,528,985 Wunsch Nov. 7, 1950 2,558,686 Hubbard June 26, 1951 2,674,500 Hukari Apr. 6, 1954
US233151A 1951-06-23 1951-06-23 Material handling apparatus Expired - Lifetime US2718312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US233151A US2718312A (en) 1951-06-23 1951-06-23 Material handling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US233151A US2718312A (en) 1951-06-23 1951-06-23 Material handling apparatus

Publications (1)

Publication Number Publication Date
US2718312A true US2718312A (en) 1955-09-20

Family

ID=22876089

Family Applications (1)

Application Number Title Priority Date Filing Date
US233151A Expired - Lifetime US2718312A (en) 1951-06-23 1951-06-23 Material handling apparatus

Country Status (1)

Country Link
US (1) US2718312A (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785813A (en) * 1955-11-09 1957-03-19 Tofflemire Francis Mucking machine for use in shaft sinking
US2801012A (en) * 1954-07-22 1957-07-30 Lester C Lederer Digging machine
US2813645A (en) * 1957-01-14 1957-11-19 John S Pilch Earth moving apparatus or the like
US2831589A (en) * 1956-02-28 1958-04-22 Glenn W Way Articulated boom for mobile crane
US2846094A (en) * 1954-06-22 1958-08-05 John S Pilch Tractor operated trencher
US2858626A (en) * 1954-11-24 1958-11-04 Ohio Commw Eng Co Excavating apparatus
US2860793A (en) * 1953-07-27 1958-11-18 Clark Equipment Co Tractor shovel
US2873871A (en) * 1955-07-05 1959-02-17 Waite Inc J P Boom locking apparatus for a back hoe
US2890805A (en) * 1956-11-27 1959-06-16 John S Pilch Hydraulic system for tractor mounted apparatus
US2903142A (en) * 1956-01-16 1959-09-08 Shawnee Mfg Company Inc Control mechanism for swingable booms
US2965253A (en) * 1957-07-30 1960-12-20 Koehring Co Scoop loader attachment
US2984372A (en) * 1957-02-13 1961-05-16 Ferwerda Ray Telescopic-boom-operated digging bucket
US3003649A (en) * 1957-10-23 1961-10-10 Warner Swasey Co Turntable structure for hydraulic digging machines
US3030713A (en) * 1958-10-02 1962-04-24 Eimco Corp Material handling machine
US3042236A (en) * 1959-12-14 1962-07-03 John S Pilch Trencher turret rotating apparatus
US3141561A (en) * 1961-12-09 1964-07-21 Bjorklund John Bertil Dredger
US3154198A (en) * 1960-04-04 1964-10-27 Mccabe Powers Body Company Rotatable derricks for use on a truck or other similar mobile platform
US3191324A (en) * 1963-06-13 1965-06-29 Caterpillar Tractor Co Blade stabilizer for motor grader
US3219212A (en) * 1962-07-06 1965-11-23 Roy O Billings Excavators
US3233763A (en) * 1963-06-03 1966-02-08 Dakon Adams Co Material handling
US3246406A (en) * 1963-06-27 1966-04-19 M R S Mfg Company Bulldozer having a universal blade mounting
DE2429659A1 (en) * 1973-06-28 1975-01-16 Poclain Sa BUCKET EXCAVATORS, IN PARTICULAR DEEP BUCKET EXCAVATORS
FR2581404A1 (en) * 1985-05-03 1986-11-07 Poncin Gilles All-terrain earthworks machine
US4848010A (en) * 1987-07-27 1989-07-18 Zimmerman Harold M Backhoe machine
US5488788A (en) * 1994-04-07 1996-02-06 Durbin; Ricky L. Groundworking attachments for an outrigger stabilizer pad
US6668471B1 (en) * 2000-09-01 2003-12-30 Excavation Technology Corporation Towable earth digging apparatus
US20040237353A1 (en) * 2003-05-29 2004-12-02 Kobelco Construction Machinery Co., Ltd Hydraulic excavator
US20080000652A1 (en) * 2006-05-17 2008-01-03 Johnson William C Towable backhoe
US11499289B2 (en) * 2019-02-21 2022-11-15 Kobelco Construction Machinery Co., Ltd. Construction machine equipped with dozer

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US590990A (en) * 1897-10-05 Excavator
US615984A (en) * 1898-12-13 iiarting
US651648A (en) * 1899-10-25 1900-06-12 Henry Breitenstein Railway transfer-table.
US2109388A (en) * 1934-07-24 1938-02-22 Cleveland Tractor Co Land vehicle equipped with loadshifting devices
US2304075A (en) * 1940-11-02 1942-12-08 Bucyrus Erie Co Bulldozer
US2344584A (en) * 1941-05-10 1944-03-21 Plant Choate Mfg Co Inc Implement for tractors
US2387764A (en) * 1944-09-15 1945-10-30 Willard A Maxwell Combination bulldozer and shovel
US2411498A (en) * 1945-03-14 1946-11-26 Roy O Billings Pull shovel
US2462926A (en) * 1944-03-27 1949-03-01 Austin Western Company Full circle boom crane
US2493718A (en) * 1944-09-14 1950-01-03 Lever Motors Corp Lever engine action
US2502681A (en) * 1945-03-17 1950-04-04 Unit Crane & Shovel Corp Material handling apparatus
US2528985A (en) * 1947-01-22 1950-11-07 Wunsch Harry Hydraulically actuated swing boom crane
US2558686A (en) * 1948-09-24 1951-06-26 Washington Iron Works Portable crane
US2674500A (en) * 1949-07-28 1954-04-06 Hukari Ormand Articulated support for platforms

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US615984A (en) * 1898-12-13 iiarting
US590990A (en) * 1897-10-05 Excavator
US651648A (en) * 1899-10-25 1900-06-12 Henry Breitenstein Railway transfer-table.
US2109388A (en) * 1934-07-24 1938-02-22 Cleveland Tractor Co Land vehicle equipped with loadshifting devices
US2304075A (en) * 1940-11-02 1942-12-08 Bucyrus Erie Co Bulldozer
US2344584A (en) * 1941-05-10 1944-03-21 Plant Choate Mfg Co Inc Implement for tractors
US2462926A (en) * 1944-03-27 1949-03-01 Austin Western Company Full circle boom crane
US2493718A (en) * 1944-09-14 1950-01-03 Lever Motors Corp Lever engine action
US2387764A (en) * 1944-09-15 1945-10-30 Willard A Maxwell Combination bulldozer and shovel
US2411498A (en) * 1945-03-14 1946-11-26 Roy O Billings Pull shovel
US2502681A (en) * 1945-03-17 1950-04-04 Unit Crane & Shovel Corp Material handling apparatus
US2528985A (en) * 1947-01-22 1950-11-07 Wunsch Harry Hydraulically actuated swing boom crane
US2558686A (en) * 1948-09-24 1951-06-26 Washington Iron Works Portable crane
US2674500A (en) * 1949-07-28 1954-04-06 Hukari Ormand Articulated support for platforms

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860793A (en) * 1953-07-27 1958-11-18 Clark Equipment Co Tractor shovel
US2846094A (en) * 1954-06-22 1958-08-05 John S Pilch Tractor operated trencher
US2801012A (en) * 1954-07-22 1957-07-30 Lester C Lederer Digging machine
US2858626A (en) * 1954-11-24 1958-11-04 Ohio Commw Eng Co Excavating apparatus
US2873871A (en) * 1955-07-05 1959-02-17 Waite Inc J P Boom locking apparatus for a back hoe
US2785813A (en) * 1955-11-09 1957-03-19 Tofflemire Francis Mucking machine for use in shaft sinking
US2903142A (en) * 1956-01-16 1959-09-08 Shawnee Mfg Company Inc Control mechanism for swingable booms
US2831589A (en) * 1956-02-28 1958-04-22 Glenn W Way Articulated boom for mobile crane
US2890805A (en) * 1956-11-27 1959-06-16 John S Pilch Hydraulic system for tractor mounted apparatus
US2813645A (en) * 1957-01-14 1957-11-19 John S Pilch Earth moving apparatus or the like
US2984372A (en) * 1957-02-13 1961-05-16 Ferwerda Ray Telescopic-boom-operated digging bucket
US2965253A (en) * 1957-07-30 1960-12-20 Koehring Co Scoop loader attachment
US3003649A (en) * 1957-10-23 1961-10-10 Warner Swasey Co Turntable structure for hydraulic digging machines
US3030713A (en) * 1958-10-02 1962-04-24 Eimco Corp Material handling machine
US3042236A (en) * 1959-12-14 1962-07-03 John S Pilch Trencher turret rotating apparatus
US3154198A (en) * 1960-04-04 1964-10-27 Mccabe Powers Body Company Rotatable derricks for use on a truck or other similar mobile platform
US3141561A (en) * 1961-12-09 1964-07-21 Bjorklund John Bertil Dredger
US3219212A (en) * 1962-07-06 1965-11-23 Roy O Billings Excavators
US3233763A (en) * 1963-06-03 1966-02-08 Dakon Adams Co Material handling
US3191324A (en) * 1963-06-13 1965-06-29 Caterpillar Tractor Co Blade stabilizer for motor grader
US3246406A (en) * 1963-06-27 1966-04-19 M R S Mfg Company Bulldozer having a universal blade mounting
DE2429659A1 (en) * 1973-06-28 1975-01-16 Poclain Sa BUCKET EXCAVATORS, IN PARTICULAR DEEP BUCKET EXCAVATORS
US3909963A (en) * 1973-06-28 1975-10-07 Poclain Sa Back-acting shovel with cooperating shield
FR2581404A1 (en) * 1985-05-03 1986-11-07 Poncin Gilles All-terrain earthworks machine
US4848010A (en) * 1987-07-27 1989-07-18 Zimmerman Harold M Backhoe machine
US5488788A (en) * 1994-04-07 1996-02-06 Durbin; Ricky L. Groundworking attachments for an outrigger stabilizer pad
US6668471B1 (en) * 2000-09-01 2003-12-30 Excavation Technology Corporation Towable earth digging apparatus
US20040237353A1 (en) * 2003-05-29 2004-12-02 Kobelco Construction Machinery Co., Ltd Hydraulic excavator
US7174968B2 (en) * 2003-05-29 2007-02-13 Kobelco Construction Machinery Co., Ltd. Hydraulic excavator
US20080000652A1 (en) * 2006-05-17 2008-01-03 Johnson William C Towable backhoe
US11499289B2 (en) * 2019-02-21 2022-11-15 Kobelco Construction Machinery Co., Ltd. Construction machine equipped with dozer

Similar Documents

Publication Publication Date Title
US2718312A (en) Material handling apparatus
US3495727A (en) Backhoe
US2846094A (en) Tractor operated trencher
US2541045A (en) Material moving apparatus
US2820555A (en) Power shovels or the like
US3862697A (en) Front loading hydraulic excavator
US3047171A (en) Swing mechanism for backhoe
US2603374A (en) Loading attachment fob tractors
US2731162A (en) Loader with self-leveling carrier
US3811587A (en) Hydraulic leveling circuit for implement
US3606048A (en) Vehicle having front,central and rear implements
US2662311A (en) Hydraulic adjustment for v-type ditching blades
US3251490A (en) Hydraulic shovel
US2433086A (en) Tractor loader mechanism
US2338361A (en) Digging and loading machine
US2227433A (en) Scraper
US3599801A (en) Controls for hydraulically operated rotary crane
US2801012A (en) Digging machine
US4836740A (en) Pivotal attachment structure
US3786953A (en) Loader linkage
US3106065A (en) Position hold and release mechanisms for flow control valves
US3220581A (en) Material handling equipment
US3809250A (en) Telescopic apparatus
US3666124A (en) Lifting and excavating apparatus
US3094229A (en) Hydraulic back hoe