US2413097A - Portable loading machine - Google Patents

Description

Dec. 24, 1946. BARKER 2,413,097

PORTABLE LOADING MACHINE Filed Oct. 9; 1944 3 Sheets-Sheet 1 Dec. 24, 1946. BARKER 2,413,097

PORTABLE LOADING MACHINE Filed Oct. 9, 1944 3 Sheets-Sheet 2 IIIIHUIIIIHW Dec. 24, 1946.

E. BARKER PORTABLE LOADING MACHINE Filed Oct. 9, 1944 3 Sheets-Sheet 3 Patented Dec. 24, 1946 PORTABLE LOADING MACHINE Eugene Barker, Colum bus, Ohio, assignor to The Jaeger Machine Company, Columbus, Ohio, a

corporation of Ohio ApplicatlonOctober 9, 1944, Serial No. 557,762

This invention relates to loading machines, and has to do particularly-with loading machines of the type utilizing an automotive base vehicle upon which is mounted a power actuated scoop, the latter being adapted for swinging movement about vertical and horizontal axes for receiving, lifting and swinging to discharge positions materials contained therein.

It is an object of the invention to provide a loading machine of this character wherein im proved power-actuated means are provided for advancing or thrusting the scoop, when in a lowered position. into the material to be loaded, and thereafter to raise and swing the scoop in vertical and horizontal arcs to cause it to assume a desired position of horizontal elevation and material discharge.

It is another object of the invention to provide the scoop with means for tilting the same about a horizontal axis, whereby to downwardly tilt the Claims. (Cl. 214-132) same to provide for the gravitational discharge of materials therefrom.

It is a further object of the invention to provide a loading machine of this nature wherein th scoop is pivotally mounted on the outer end of a horizontally and vertically turnable boom structure, improved means'being provided for effecting a forced advance or crowding movement of the scoop into the materials to be loaded, to the end of filling the scoop with such materials independently of forwardmovement of the base vehicl on which the boom structure is mounted.

It is another object of the invention to provide a machine for gathering and loading loose bulk materials comprising an automotive base vehicle having mounted on the forward end thereof an upright mast, a boom being provided having its inner end joined with the mast for turning movement about both horizontal and vertical axes, the outer end of the boom being equipped with a rock shaft carrying a pair of crank arms, a scoop being pivotally connected with the outer ends of the crank arms for turning movement about a horizontal axis, power actuated means being provided for controlling the turning movement of the scoop about said axis and for oscillating the rock shaft, the oscillation of said rock shaft serving through the crank arms to effect a forward crowding movement of the scoop into the materials to be gathered, such movement being independent of corresponding forward movement on the part of th base vehicle, the latter being provided with additional power-actuated means for raising and lowering the boom and scoop and for swinging the same horizontally.

Still another object of the invention is to pro-, vide a loading machine of the type set forth characterized by the simplicity of its mechanical construction, the ease and convenience by which its operation may be governed and its compact and sturdy mechanical design by which the machine is adapted for hard usage and extended service without encountering mechanical difiiculties.

For a further understanding of the invention, reference is to be had to the following description and the accompanying drawings, wherein:

Fig. 1 is a side elevational view of a loading machine formed in accordance with the present invention, the material handling scoop of the machine being shown in full lines in its lowered position and broken lines in its elevated position of material discharge;

Fig. 2 is a vertical sectional view on the plane indicated by.the line IIII of Fig. 1;

Fig. 3 is a similar view on the line IiI-III of Fig. 1;

Fig. 4 is a side elevational view of the forward end of the machine, disclosing in broken lines different operational positions of the scoop;

Fig. 5 is a detail elevational view disclosing the scoop when positioned for use as a bulldozer.

Referring more particularly to the drawings, the numeral In designates the chassis or frame of my improved loading machine, i l the materialhandling scoop, shovel or other load carrier, at I! the turnable mast, and at l3 the boom structure, to the outer end of which the scoop is pivotally connected.

The mast I2 is carried by the frame |0-- at its forward or material-handling end, being disposed preferably immediately over the axle M of a pair of traction wheels l5. At the other end of the vehicle, one or mor ground-engaging steering Wheels I6 is provided, the operating positions of which may be controlled by the manually turned wheel ll located contiguous to the machine operator's position l8.

The mast structure includes a vertically disposed tubular column i9, which is journaled for rotation in bearings 20 carried by the base vehicle. Secured to the lower end of the column is is a worm gear segment 2|, the teeth of which mesh with a worm 22 carried by a shaft 23, the latter being suitably journaled, in hearings on the frame i0, said shaft being suitably rotated by power obtained from the operating engine 24 of the base vehicle, said engine being also employed to drive the traction wheels-l5.

Rotatable with the gear segment 2| and the auaoo'r column llisamastframecomposedofvertically extending, transversely spaced plates 25. These plates carry a cross shaft 2!, and the outer end of the latter pivotally receives the inner ends of a pair of parallel forwardly extending boom arms 21, the latter being joined at intervals by trans-' versely extending uniting braces 24. The outer ends of the boom arms carry ioumals for the support of a rock shaft 2! and the latter, in turn,

' carries at its outer ends, a pair of depending crank arms II. The lower ends of these arms are pivotally attached to brackets 2| carried by the curved rear end 32 of the scoop II,

The center of the rock shaft has secured,

thereto the hub of an upstanding crank arm 43, the latter carrying at its upper end a sheave 24.

Secured as at to oneof the cross braces 28 of the boom arms 21 is one end of a cable 28. From its point of attachment to the boom structure, the cable 36 extends around the sheave 34 and is then trained rearwardly, passing over a sheave 31 carried by the boom structure contiguous to its sheave 4t and is attached to and retained about the body of a drum 4|, driven by the engine 24.

It will be manifest that when the effective length of the cable as is shortened by winding one end thereof about the drum 4|, such shortening of the cable will cause oscillation of the rock shaft 29 and its associated crank arms 30. Thus when the scoop II is in its lowered or materialreoeiving position, as shown in Fig. 4, the shortening of the eilective length of the cable 36 oscillates the crank arm 23 and with it the crank arms 30, whereby to move or crowd the scoop 'forwardly until it assumes the broken line position shown at the bottom of Fig. '4. This movement advances the scoop into the materials to be gathered, filling the scoop with such materials but without requiring forward advance of the base vehicle, thus enabling materials to be gathered in a quickly executed and effective manner without undue manipulation in the positions of operation of the base vehicle.

To raise and lower the boom structure and the scoop carried thereby, use is made of a second cable shown at 42. This cable has one end thereof fastened as at 43 to the mast plates 25.

From this position of anchorage, the cable 42 extends downwardly, passing around a sheave 44 rotatably mounted on the rock shaft 29. From the sheave 44, the cable is extendedupwardly and is trained over a second sheave 45 mounted on the top of the mast plates. From the shaft 45, the cable 42 depends vertically, passing through the tubular column I! and around a sheave 46 at the bottom of said column to the body of a drum 4'l rotatably supported on the vehicle base frame I0.

The transmission casing 48 of the engine 24 is provided with a-power take-oil shaft 49 which is provided externally with a sprocket 50 around which is passed an endless chain 5| for use in rotating the drums 4| and 41 and in applying rotative power to the drums 4| and 41. These drums may be equipped with customary manually operated clutches for engaging and disengaging the same with the rotating elements driven from the engine 24 and, also, may be provided with the customary brake devices for governing the rotation of such drums when the latter are declutched from their driving source of energy. Thus, when the cable 42 is wound about the drum 41, the boom structure will be raised, turning about its pivotal connection with the cross shaft 23 of the mast, and lifting with it the materialfilled scoop. Such elevation of the scoop is often desirable in order that its contents may be deposited into the body of an automotive truck, such as that indicated at 52.

To admit of the gravitational discharge of the contents of the scoop when the latter is in an elevated position, the boom arms 21 are equipped with stationary brackets 53 which are pivoted as at 54 to a pair of hydraulic jacks 55. The exteriorly-projecting piston rods 5! cl these lacks have their outer ends pivotally united as at 51 with the sides of the scoop II. By the operation of a control valve 58, arranged adjacent to the drivers position ll, fluid, obtained imder pressure from a pump (not shown) driven by the engine 24, may be admitted simultaneously into the cylinders of the jacks 55 to force the piston rods outwardly, thereby swinging the scoop until the bottom thereof is tilted downwardly to such an angle as to provide for the complete gravitational discharge of its contents.

The crank arms 30 may be provided with abutments 59 for limiting the downward tilting movementvof the scoop. Following the discharge of its contents, fluid is admitted into the outer ends of the jack cylinders 55, forcing the piston rods inwardly and thereby returning the scoop to a gathering position. Coil springs 60 have their ends connected withv the boom arms 21 and with the crank arms 30 in order to return said crank arms and scoop to normal positions when the cable 36 is unwound from its drum 4|.

To provide for lateral swinging movement of the boom structure and scoop, the mast l2 turns about its vertical axis and this turning movement may be power effected through the use of the gear segment 2 I, the worm 22 and the powertransmitting connections leading to the shaft 23 from the engine 24. If desired, as shown in Fig. 5, the scoop |l may be used in the capacity of a bulldozer by projecting the piston rods 55 of the jacks 55 outwardly to their fullest extent of movement.

In view of the foregoing, it will be seen that the present invention provides an improved loading machine for use in many industrial capacities where bulk materials of various kinds are required to be gathered from the ground or other base surface, elevated and otherwise transferred from one location to another. A practical advantage of the present invention resides in pivotally mounting the scoop on the outer end of the boom structure so that through the actuation of suitable controls, the scoop may be thrust forwardly, without movement of the base vehicle, into the materials to be gathered. This arrangement enables the scoop to operate efllciently in its material-gathering function and minimizes manipulation on the part of the base vehicle in such scoop-loading operations. When the scoop is loaded, the same may be raised to a desired position, within the working limits of the machine, of material discharge and also, when so elevated. it may be swung horizontally to positions lateral of the base vehicle where receiving trucks for the material are usually located.

While I have illustrated a single preferred embodiment of the present invention, nevertheless,

it will be understood that the same is subject to certain modification without departing from the scope of the following claims.

I claim:

1. In a loading machine, a portable base 'vehicle having a power-furnishing and propelling engine, an upright mast structure supported on and adjacent to one end of said vehicle for tuming movement about a substantially vertical axis. means driven by said engine for imparting controlled turning movement to said mast structure, a boom having its rear end pivotally connected with said mast structure for turning movement about-a substantially horizontal axis and lateral swinging movement in unison with the turning of said mast structure, a rock shaft pivotally carried by the outer end of said boom, thrust-imparting arms movable with said rock shaft, a scoop pivotally connected with the outer ends of said arms, means actuated by said vehicle engine for oscillating said rock shaft and thereby imparting forward thrusting movement to said scoop, means actuated by power derived from said engine for raising and lowering said boom and scoop, and means actuated by power derived from said engine for turning said scoop about the pivotal connections thereof with said boom to tilted positions of material discharge.

2. A loading machine comprising a portable base vehicle having a power-furnishing and propelling engine, an upright mast structure supported on and adjacent to one end of said vehicle for turning movement about a. substantially vertical axis, means driven by said engine for imparting turning movement to said mast structure about said axis, a boom having its rear end pivotally connected with said mast structure for raising and lowering movement about a substantially horizontal axis and lateral swinging movement in unison with the turning of said mast structure, a drum mounted on said base vehicle mounted on said engine, cable means connected with said drum passing through said mast structure and joined with said boom for imparting raising and lowering movement thereto, a scoop,

.ment on the part of said base vehicle, and means uniting said boom with said scoop to produce tilting movement thereof about its pivotal connections with said arms.

3. A loading machine comprising a portable base vehicle having a power-furnishing and propelling engine, an upright mast structure supported on and adjacent to one end of said vehicle for turning movement about a substantially vertical axis, means driven by'said engine for imparting turning movement to said mast structure about said axis, a boom having its rear end pivotally connected with said mast structure for raising and lowering movement about a substantially horizontal axis and lateral swinging movement in unison with the turning of said mast structure, a drum mounted on said base vehicle mounted on said engine, cable means connected with said drum passing through said mast structure and joined with said boom for imparting raising and lowering movement thereto, a scoop. arms pivotally carried by the outer end of said boom, pivotal connections between the outer ends of said arms and said scoop, a second drum mounted on said base vehicle and driven by said engine, a second cable means connected with said second drum and passing through said mast structure for imparting oscillatory movement to said arms, whereby to impart linear movement to said scoop independently of corresponding movement on the part of said base vehicle, meansuniting said boom with said scoop to produce tilt-' ing movement thereof about its pivotal connections with said arms, said last-named means embodying a pair of fluid-receiving cylinders, pivotal connectitons uniting said cylinders at one end of each thereof with said boom, movable piston rods carried by said cylinders, and pivotal connections between the outer ends of said piston rods and said scoop.

4. In a loading machine; a vertically swinging shovel boom; a pair of crank arms mounted for oscillation on the outer end of said boom; a scoop pivotally connected at its rear with the outer ends of said arms, means for oscillating said arms to impart forward thrusting movement in a linear direction to said scoop, whereby to cause the same to penetrate and receiv the materials to be loaded thereby, fluid-actuated means carried by said boom and connected with said scoop for rocking the latter about its pivotal union with the outer end of said boom between material-handling and discharging positions, and stop means formed with said arms and disposed for engagement with said scoop to limit its rocking movement in a material-discharging direction.

EUGENE BARKER.

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