US1603573A - baker - Google Patents

Description

Oct; 19, 1926.,

R. M. BAKER LOADING MACHINE Filed Oct 1925 5 Sheets-Sheet 1 Oct. 19, 19260 R. M. BAKER LOADING MACHINE led Oct, 17 I 5 Sheets-Sheet 2 NR Mb Oct. 19 1926..

R. M. BAKER LOADING MACHINE ile on. 17

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R. M. BAKER LOADING MACHINE iled Oct: 17 1925 5 Sheets-Sheet 4 a w l lm WWW Gum new Patented Oct. 19, 1926 UNETED STATES ROY M. BAKER, OF CHISHOLM, MINNESOTA.

LOADING MACHINE.

Application filed October 17, 1925. Serial No. 63,109.

My present invention relates generally to loading machines, and more particularly to a loading machine primarily intended for the handling of bulk materials such as ore, sand, gravel and the like, in mines and underground passages where space is limited and the head room inadequate for the use of the ordinary material used upon the surface for a similar purpose.

The primary object of my present invention is the provision of a machine or apparatus of this character adapted for control and actuation by a single operator, which will be simple and inexpensive, which will be strong and durable, and which will be effective and efficient for the intended'purposes.

With the'above general objects in mind my invention proposes a readily portable machine in which an extensible and retractable boom is pivoted atits inner end adja cent to the base of a turnable mast or upright, the boom in its retracted position being of either the same or less height than the mast when raised tovertical position, and being of not substantially greater height in this position, including the bucket carried.

by the outer portion of the boom.

The foregoing and other objects of my invention together with the resulting advantages thereof may be readily-understood by reference to the accompanying drawings, illustrating the invention and forming a part of this specification, and wherein,

proved apparatus.

Figure 2 is a top plan View thereof.

. 1* igure 33 of Figure 1.

Figure 1 is an enlarged sectional side view of the outer end of the boom and the bucket carried thereby.

Figure 5 is a detail transverse section taken on line 55 of Figure 4.

Figure 6 is a detail top plan view and partial section of the boom. r

Figure 7 is a detail transverse section taken on line 7-7 of Fig. 6.

Figure 8 isa detail. section through the boom controlling mechanism taken on line 88 of Figure 8.

Figure 9. is a detailsection through-the mast controlling mechanismstaken on line 9+9 of Figure 3.

is a transverse vertical section therethrough taken substantially on line.

Figure 10 is a detail sectional side view illustrating a modified form of bucket.

Figure 11 is a top plan view of the same, and

Figure 12 is a transverse section taken on line 1212 of Figure 10.

Referring now to these figures and particularly to Figures 1 to 9 inclusive showing the preferred embodiment of my invention, I provide an apparatus including a horizontal frame or platform 15 preferably mounted on flanged wheels 16, so'that the apparatus as a whole may be easily and conveniently transported upon mine tracks 17. As seen especially in Figure 2, the platform 15 is rectangular and has pivotally connected braces 18 extending from its corners for connection by spikes 19 or the like to the track ties 20, as it is obvious that the apparatus as a whole must in use be effective- 1y braced against lateral and longitudinal tilting.

Rising from the platform 15 and securely anchored thereto in the manner best shown in Figure 3 is a solid post 21, and around this post the lower portionof a cylindrical upright mast 22 is journaled. The mast 22 has a lower gear wheel 23, and below said gear wheel 23 it rests upon an anti-friction bearing 2%, facilitating its rotative adjustment on the bearing post 21.

, Engaging the gear 28'is a second smaller gear 25 secured upon the lower portion of a vertical shaft 26, whose lower end is stepped Figure 1 is a side elevation of my 1mina'bearing 27 on the platform 15. The tip per end of shaft 26 extends into a gear box 28 mounted in elevated position upon upright-supporting beams 29, wherein the shaft has fixed thereto a bevel gear 30. Within the gear boX 28 is a small motor 31, whose shaft is connected by gears 32 to a clutch shaft 33, the latter having thereon two spaced apart and oppositely facing bevel gears 3i and 35 engaging gear at diametrically opposite points. These gears 34 and 35 have clutch faces 36 opposite one another for en gagement by the similarly faced opposite ends 37 of a clutch member 38 splined on the shaft and adapted to be shifted by a lever 39, whose handle end 40 projects e2;- teriorly of the body. In this way the rotation of the mast 22 and the direction of such rotation may be easily controlled by the operator on the platform 15.

Secured thereto immediately above the gear wheel 23, the mast 22hasanoutstanding bracket 42, and "this brack'et'has opposing upstanding ears 43. Through these ears 43 a pivot bolt 44 extends, and also projects through the side members 'oitthe inner end' or head 45 of the boom, or rather the body of the boom. The boom consists of two pertions, an inner or body po'rtion'comprising the inner head 45, an outer head 46 and a series of tubi'ilar' guide members 47 -betwe'en these heads, andan "outer portion or extension' having ahead 48 and a's'eries ot'guide rods 49, which are slidable in the guide members 47 'through'the he'a-d' ifi. The body of the boom has-moreover a cylinder 5O to the oppo'siteend's ofwhich air or fluid pressure pipes 51 and 52 are'connectedin practice. The cylinden has therein a piston whose rod-53% connected 'to' the head 48 Of 'thefb'dom extension whereby the latter "by suitable controlof the sup ly of airor fluid through ipes 51 and 52 may hemmed outwardly 'to the retracted position.

The upper end of'the' ma'st aa is slotted and has mounted therein a guide pulley 54, over which the boom controlling cable 553s extended. The outer end of this cable is 'securely'attached to the outer head 46 of the body of the boom 'by a member 55, while the inner end is extended around 'a'windi'n drum 56 in a casing 57 attached to thema'st as plainly seen in'Figur'e 3. The drum 56 is controlled by a"bra ke"'58' actuated bya brake lever 59, and the drum'ismounted on the'shaft {60 of amotor 61, also within the casinghl' 'as'see'nhy acoinparisonb'f Figtires 2 and I As seen in Fi'gures h t-and 5 'in articular, a clam 's'hell'buelret' is employedydns bucket having relatively'movable "sections 62 "pivoted on across bar 63, which isrigi-dly connected to" th lower "ends of spa ed curved supporting "arms 64. This sh'aft'h'as secured to its' 'centrall portionhn upright U- shaped frame 65, between the upper 'ends o-f which a cylinder 66'is" fixed.

To the bucket 'se'ctio'n's"the lower outer ends of pair of connecting links 67are pivoted'at 68. I The upper inner ends of these links are movably connected to theends of a cross-shaft 69 parallel with and above'the bar 63. Cent-rally between the ends "the shaft 69 is connected to the lower end of a' piston rod'70, whose u'pper end is connected I to a piston 71 in the cylinder 66. To the pwi eends "of thetylinder air"-orfiuid pipes 72 and 73 are connected, and it"is'ob 'v'ious" that when the piston '71- is fcrc 'ed downwardly the bucket-sections 62 will be closed asindicated in "dotted lines in Fig. 4,"

and that when the piston'i's'fo'rced upwardly the "bucket s'ections-willunove 'to" the o-pen position shown in tull lin'es'in said figure.

Insteadef'the clans shell bucket just above descnbed, I may employ a scoop bucket 74 of rectangular form as shown in the modification, Figures 10,, 11 and 12. This bucket will have a filling lip 7 5 at one side of its open end, and will have at its opposite end a pivoted clumpin'g"door 76 hinged at 77 and normally latched by a spring latch mem her 7 8 slidable on the door and engageable with akeeper-79 depending from one of the. bucket walls. To this latch member a flexible 'c'onnection '80 :is connected through a lever 81, and by pulling-this connection; the latch member may be withdrawn and the door permitted to drop, with the parts in the dotted line posit-ion of Figure 10.

-The bucket 74 is supported as a whole in supporting arms '82 extending from-the extension head 48* ofthe boom, and to these arms 82 the bucket is pivotally connected at its sideswas at '88; so it mayswingirom a horizontal leading position asfshown in full lines-Lin "Figure 10 to a vertically dumping position-shown in dotted lines. --'In utilizing this scoop bucket the outer head l-6 of: the boom has an angular lug 84*positioned for engagement-by a hook 85 carried by the bucket, when the boom is in Verticalpositi'on and the boom extension 'is' retracted. Thus" when the boom is lowered the bucket will be held from'swinging to a vertical posi- "ti-'o'n andthus-"suplported for proper lowering movement to the aground, until the extended :hoom isshifted outwardly to 'load'the bucket. i In'the operation of the apparatus with the bucket of' lligures 10,11and12, the :operator' -firstfll-owers the boom with the parts in'the full-line-rposition -of Figure 10 and then shifts the "boom extension outwardly -rso a's to force the "open K end ofthe =bucketinto the material to'be loaded. The looomis-then raise'd s'li'ghtly and the extension is retracted after-which the boom :is "elevated to nearly a. verticabposition, the *mast'turned to swing the bo'omaround'to therear of the apparatus and"then" the'boom lowered and the e'xtension shifted outwardly to'the car or other point where 'them-aterial is to bQ-dUHI'PBd. The" conhection"- 8( "is 'then pulled and the (1001"76 r'eleasedso that thei load drops The boom is then raised and the extension retract-ed and hook85 engages lug '84, as in Figure "10. The mast is'then 'again turned so that the boom swings to 'a ttorward positionand' the boomjis then lowered. During the last lowering of the 'booin preparatoryito a'noth'er l'oading operation, the door 7 6 will swing by gravity to closed-and latched position.

In the use of the apparatus as shown in Figures 1 to' 9 'incl'usi ve, the =b'0omis'raised and the boom extension "shifted r outwardly, and the bucket sections 62-actuated -to the epeni position before' the boom is-lowered so that the'open bucket is -on-"t-he= load. The bucket sections are then iclosedfonthe load andthe boom may then be raised during which the boom extension is retracted. The mast is then rotated through 180 degrees and the boom lowered and its extension shifted outwardly. The bucket is then opened, permitting the load to dump after which the boom is raised, the extension retracted and the mast rotated so that the parts return to the loading position.

It is obvious from the foregoing that my invention presents a construction and arrangement of parts which readily carries out the objects first above stated and which promotes strength and durability in addition to effectiveness and efficiency in operation.

I claim:

The combination in a loading machine of a wheeled frame, a mast rotatable thereon and a boom pivoted at the base of said mast, said boom comprising a pair of tubular guides and rigid heads connecting the guides, an extensible frame comprising a head and reciprocable rods in said guides, a cylinder supported between said guides, a rod on the head of the extensible frame and a piston for said rod in the cylinder, means for introducing motive fluid at opposite sides of said piston, and a loading bucket carried by the extensible frame.

In testimony whereof I have aifixed my signature.

ROY M. BAKER.

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