US714706A - Wheeled dumping-scraper. - Google Patents

Description

v. n. JOHNSON. y WHEELED DUMPING SCR'APER.

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WHEELED DUMPING SCRAPEB. l

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Patented nec. 2, i902.. l

v. n. JOHNSON; WH-EELED DUMPING SCRAPER.

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WHEELED DUMPING SCBAPER.

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UNITED STATES L ATENT OFFICE.

VICTOR D. JOHNSON, OF AURORA, ILLINOIS, ASSIGNOR TO FREDERICK C. AUSTIN, OF CHICAGO, ILLINOIS.

WHEELED DUNIPING-SCRAPER.

SPECIFICATION forming part of Letters Patent N o. 714,706, dated December 2, 1902. Application filed November 18, 1901. Serial No. 82,733. (No model.)

` The objects of my invention are to facilitatethe raising of the scoop-body from a working to a carrying position, to permit the draft employed for drawing the scraper to more easily dump the scoop-body and to thereby 2o lessen the power employed for dumping, and

to provide certain novel-and improved mat-l ters of detail and arrangement serving to increase the general efficiency of wheeled dumpz5 In the accompanying drawings, Figu re l is a top plan view of a wheeled dumping-scraper embodying the principles of my invention. Fig. 2 is a side elevation thereof with the scoop-body in carrying position. Fig. 3 is a 3o section taken through Fig. 2 on line x Fig. 4 is an enlarged detail showing one of the slotted standards. Fig. 5 shows a portion of the crank-axle and part of one of the longitudinally-arranged lever-bars secured thereto.` Fig. 6 shows the wheeled dumpingscraper with the scoop-body in working position. Fig. 7 is a like view showing the scoopbody in dumping position.

A indicates the scoop-shaped body, and B B 4o the two supporting-wheels. The body A is suspended from a crank-axle C, Figs. l and 3, comprising end portions l, adapted to provide spindles for the wheels, crank-arms 2, which are lateral to an axis passing through the spindles, and a middle high portion 3, which lies transversely over the body when the latter is in either a carrying or a working position. Practically the spindles and crankarms constitute the two parts of a crank-axle 5o and the high or middle portion 3 a connection between said two parts, it being understood that as a matter of course the crankaction could be utilized by suspending the body from the crank-arms or from the middle or high crank portion 3, which forms a rigid connection between the outer ends of such arms. In the machine illustrated the suspension of the body from the crank-axle considered as an entirety is attained by lever-bars D, conveniently secured to the crank-arms 2 and oo each arranged to form a double-armed lever, with its two arms projecting respectively forwardly and rearwardly from the crankaxle.` The forwardly-extending arms 4 of these levers are pivotally connected with standards E, which are secured to opposite sides of the body at points forward of its middie-that is to say, forward of a transverse line which is intermediate of the front and rear ends of the body. The rear arms 5 of 7o these lever-bars D are connected by links F with a swinging yoke or bail G, which is hinged to opposite sides of the body at points in rear of the middle of the latter. The side arms 6 of this yoke or bail could be piv- 7'5 oted directly to the body, or, as a preferred arrangement, they can be hinged or pivoted to short standards 7, rigidly secured to the body and made somewhat less in height than the forward standards E. When the 8o body is in carrying position, as in` Fig. 2, the lever-bars D will be horizontal or approximately horizontal and can be locked in such position by a locking device,lsuch as a pivoted latch S on the bail engaging under a catch 9 on the rear side of the body. Under such conditions the forward and rear standards E and 7 will respectively occupy planes forwardly and rearwardly of an axis passing through lh`J spindles, and the yoke or bail, 9o having, as usual, a rearwardly-extending arm l0, will extend rearwardly from its connection with the body and occupya substantially T horizontal position. At such time also the links F, which connect the rear arms of `the lever-bars D with the `bail-arms at points back of the connections between the bail-arms and the body, will occupy inclnedpositions, being inclined upwardly and forwardly from their connections with the bail.

In order to lower the body into working position, thelatch is freed from the body, where- IOO upon the weight of the latter will cause th-e body to drop and the bail to swing into an upwardly-inclined position, as illlustrated in l Fig. 6.

In order to maintain the body at a proper angle for scooping up the earth, the hounds or swinging draft-frame to which the pole ll is secured has its opposite side bars 12 provided with swinging draft or stay attachments H, pivoted to the draft attachment at points forward of the pivotal connection between the latter and the body and having hookshaped lower ends adapted to engage or interlock with catches 13 onV opposite sides of the forward end portion of the body. These stay attachments II are connected by links 14 with the ends of the forwardly-projecting arms 4 of the lever-bars D, a desirable arrangement being to provide sliding connections between the lever-bars D and the links 14, such as slots 15 in the links and bolts or pins 16 extending through such slots and engaging the lever-bars. By such arrangement the lowering of the bowl and the forward tilt of the lever-bars, as in Fig. 6, will permit the hook-shaped stay attachments to swing downwardly and engage the catches 13, and thereupon the draft will also be exerted upon the lower forward portion of the bowl or body. When the body is thus brought into working position, the crank portion of the axle will lie in a plane which inclines upwardly and forwardly from an axis passing through the spindles, and the lever-bail and the lever-bars will lie in planes which are reversely inclined with relation to the plane occupied by the crank-axle, the'lever-bars, however, being desirably at or substantially at right angles to the crank-arms 2. After the body has received a suitable quantity of soil it can be` again brought into carrying position by swinging the bail rearwardly' and downwardly, the

result of such action on the part of the bail being that the lever-bars will tilt from an inclined io a horizontal or substantially horizontal position, and in so doing they will cause the stay attachments H to swing up-` wardly and out of 4engagement with the catches 1 3. When the bail is thus depressed for thefpurpose of breaking the forward cutting edge of the body away from the ground and raising the loaded body into carrying position, the' raising mechanism herein provided will operate as a compound lever and involve an extended leverage so arranged as to permit a single operator to raise the loaded body quickly and with comparative ease, and thereby not only lessen the labor, but also permit the body to be heavily loaded before raising it from the ground. Thus when the bail is depressed for the purpose of raising the bowl the crank-arms on the spindles will swing rearwardly about an axis passing through such spindles and simultaneously therewith the bail will be swung downwardly.

l During such action the pivotal points of connection betweenthe linksr F and the sides or arms 6 of the bail will have an extent of movement considerably greater than the greatest extent of movement on thev part of the crank portion ofthe axle, and, if desired, said points of connection between the lever-bars, links F, and the bail can be `made to traverse double the distance traversed by the tilting or swinging crank portion of the axle. This relative difference between the movement of the crank portion of the axle or the crank-arms and the points of connection between the lever-bars D and the bail can he determined and varied by the extent to which the rear arms 5 of the lever-bars extend back from the crank-axle, the extent to which the points of connection between the linksF and the arms 5 are set back from the crank-arms, and the extent to t die portion connected with the middle portion of the high part 3 of the crank-axle by a link connection 17, Figs. 1 and 3, such link connection being preferably attached at oneend to a short arm 18 on the bail and to an arm 19, which is secured upon Isuch high part of the crank-axle. This connection between the bail and the axle when employed is adapted to have an extent of movement corresponding with the extent of movement on the part of the connections betweenthe lever-bars D and the bail, and thereby it may be used as aux iliary to said connections between the bail and lever-bars D.

In order to dump the load, the operator IOO TIO

will lift the rear end of the body by taking hold of its rearwardly-projecting handles 20, and thereby permit the forward end of the body to tilt down and engage the ground, while the bail is locked to the body by the catch 8. When the body is in position for dumping, substantially as in Fig. 7, a long latch I on the pole or draft frame will engage catch 9 on the body, and thereby prevent the body from tilting back until such catch I has been released from the body. In order to facilitate this dumping action on the part of the body and permitV the forward draft to readily effect the same, the hounds or sides l2 of the draft attachment have sliding pivotal connections with the standards E, which are secured to and arranged to rise from opposite sides of the body at points forward ofthe middle of the latter.

By such construction "12 of t-he draft attachment.

course, that they are indirectly connected y with the scoop-body by means of the guides `and automatically-shifting pivotal connections. k lo In the arrangement shown these uprights or standards have vertical slots 20 (see also Fig. 4) for pins or rolls 2l on the sides `planepassing longitudinally andcentrally through the body, whereby the draft upon the body1 in a direction to tilt the same will practically shift toward the outer end of lever-arms secured to the body. This arrangement lessens the work of dumping and -rende'rs it'an easier matter for the team to cause the body to tilt to an extent to completely dump the load.

In order to limit the extent of tilt or swing `on the part of the body in dumping, I can provide anysuitably-arranged stop device.

For example, the uprights or standards E can have stops 22, which engage upon the sides of the draft attachment when the body is in dumping position, as in Fig. 7, or such stops may be provided upon the draft attachment y and arranged to engage the standards K.

When Ithe body is in carrying, or working position, the guideways for the shifting piv- 1otal connections between the draft attachment and the body are on vertical or substantially vertical lines forward of an axis passing through the spindles, and an axis passing through these oppositely-arranged shifting'pivotalconnectionsbetweenthedraft attachment and the body will be on a plane below an axis passing through the spindles.

`With reference to certain minor details shownthe links F are double links, and the standards E and 7 are each preferably coinposed of a couple of parts respectively secured to an inner and outer side wall of the screw-body, it being observed, however, that this is a common way of forming links and standardsin wheeled dum ping-Scrapers of the class to which my invention relates.

What I claim as my invention is- 1. A wheeled dumping-scraper comprising a crank-axle; a scoop-body; lever-arms rigid with and extending forwardly and rearwardly from the crank portion of the axle; a bail pivotally connected with the scoop-body; link connections between the` bail and the rearwardly-extendinglever-arms; and link con- When the body` nections between the forwardly-extending lever-arms and the scoop-body.

2. A wheeled dumping-scraper comprising a crank-axle; lever-bars rigid with the crankarms and extending forwardly and rearwardly therefrom; a bail pivotally connected with the scoop-body; link connections between the rearwardly-extending portions of the lever-bars and the bail, and link connections between the forwardly-extending portions of the lever-bars and the scoop-body.

3. A wheeled dumping-scraper comprising an axle having spindles for the wheels and a crank portion consisting of crank-arms lateral to the spindles and connected together; lever-bars secured to the crank portion of the axle and providing lever-arms extending forwardly and rearwardly therefrom; a bail having its sides pivotally connected with the scoop-body in rear of the spindles; links connecting the sides of the bail with the rearwardly-extending lever-arms; and standards secured to the sides of the scoop-body at points forward of the axle-spindles; the forwardly-extending lever-arms being pivotally connected with said standards.

1i. In a wheeled dumping-scraper, a crankaxle; a tilting scoop-body suspended from the crank-axle and provided with upright side guides; and a draft attachment having free rear end portions connected with the upright guides on the scoop-body by automaticallyshifting pivotal connections.

5. In a wheeled dumping-scraper, a crankaxle and a tilting scoop-body supported thereby; arms secured to the crank-axle and extending forwardly therefrom; upright side guides rigid with the scoop-body and pivotally connected with said forwardly-projecting arms on the crank-axle; and a draft attachment having shifting connections with the upright guides, said connections permit` ting the scoop-body and the draft attachment to tilt independently the one of the other.

6. A wheeled dumping-scraper comprising a crank-axle; a scoop-body suspended from the crank-axle; a draft attachment; slotted standards rigid with and rising from the scoop-body; and shifting pivotal connections between the draft attach ment and the slotted standards.

7. A wheeled dumping-Scraper comprising a crank-axle; a scoop-body; lever-arms projecting forwardly and rearwardly from the cran k-axle; a bail hinged to the scoop-body; connections between the rearwardly-projecting lever-arms and the bail; a locking device for locking the bail to the scoop-body; a draft attachment; standards secu red to and rising from the scoop-body; shifting pivotal connections between the draft attachment and the standards; and pivotal connections between said standards and the forwardly-projecting lever-arms.

8. A wheeled dumping-scraper comprising a scoop-body; a crank-axle; a bail pivotally connected with the'seoop-body; bars D, sei rising from the scoop-body; pivotal connections between said lever-arms and the standards; a draft attachment having shifting pivotal connections With the standards; and stops arranged to eeot an engagement between the lever-arms and draft attachment when the scoop-body is in dumping position.

VICTOR D. JOHNSON.

Witnesses:

E. KEAGLE, H. ATKIN.

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