US761921A

US761921A - Dumping-wagon.

Info

Publication number: US761921A
Application number: US17725503A
Authority: US
Inventors: William Oscar Shadbolt
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-10-16
Filing date: 1903-10-16
Publication date: 1904-06-07
Anticipated expiration: 1921-06-07

Description

PATENTED JUNE 7, 1904.

W. 0. SHADBOLT.

DUMPING WAGON. APPLICATION FILED OUT. 16, 1903.

2 SHEETS-SHEBT 1.

N0 MODEL.

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UNITED STAT S" Patented June *7, 1904.

PATENT, OFFICE.

DUMPlNG-WAGON.

SPECIFICATION forming part of Letters Patent No. 761,921, dated June '7, 1904..

Application filed October 16, 1903.

To all whom it noay concern:

Be it known that I, WILLIAM OSCAR SHAD- BOLT, a citizen of the United States, residing in the borough of Brooklyn, in the county of Kings and city and State of New York, have invented certain new and useful Improvements 7 in Dumping-VVagons, of which the following is a specification.

This invention relates to the class of fourwheeled dumping-wagons wherein the dumping-body is actuated for dumping by means of a rack and pinion or like means; and the object of the present invention is to so mount the body that it may be in stable equilibrium when it its normal position on the frame and will require to be moved rearward to the dumping-point and to provide hand-operated mechanism for shifting the dumping-body, said mechanisms having aslotted connection with said body, whereby the latter may dump without communicating its movement to the said operating mechanism, all as will be hereinafter explained. v

In the accompanying drawings, which illustrate an embodiment of the invention, Figure 1 is a side View of the dumping-wagon, showing the body in its normal position on the frame. Fig. 2 is a similar view, showing the body dumped. In both of these views some parts are broken away to illustrate better the construction. Fig. 3 is a transverse section taken at line in Fig. 2. Fig. 1 is an under 1 side view of the frame and body. Fig. 5 shows the fulcrum-stud and keeper in detail.

Fig. 6 illustrates another dumping meanswhere a chain is substituted for the rack and pinion.

Referring primarily to the first five figures of the drawings, 1 is the frame of the wagon, supported in the usual manner on wheels 2. As the frame and wheels may be of substantially the usual construction and the frame may be mounted on the axles through a fifthwheel and springs of a known kind and construction, no special description of these will be required.

8 is the dumping-body, slidable on the frame. At the sides of the frame,'near the hinder end Serial No. 177,255. (No model.)

thereof, are two roller fulcrum-studs 4, one at each side, and at each side the body 3 has rigidly secured to it a slot-stirrup or keeper 5, whichengages the said fulcrumstud-that is to say, under and to the bottom side rail of the body is secured the keeper 5, which may be conveniently of iron or steel, and this keeper forms a limiting-slot along which the fulcrum-stud 4: plays when the body is being moved back in dumping. The forward end of said keeper impinges on the fulcrum-stud, and thus arrests the rearward movement of the wagon-body. V

The device or mechanism for moving the dumping-body comprises a rack 6, mounted in guides 7, Fig. 3, in the frame and extending lengthwise of the latter, and a pinion 8, gearing with said rack, said pinion being fixed on a shaft 9, rotatively mounted in suitable ]oearings on the frame and extending transversely thereof. This shaft has a crank 10 at one of its ends, said crank being preferably removable. On the back or upper side of the rack is formed a slot 11, which is engaged by a roller -stud 12 in a link 13, the other end of said link being pivotally connectedto the body 3 at the point 14, which is located considerably forward of the longitudinal center of the body.

The operation in dumping is as follows: The body 3 being in its normal forward position, as seen in Fig. 1, with the stud 12 at the rear end of the rack-slot 11 and the link 13 occupying a nearlyhorizontal position, the operator applies the crank 10 to the pinionshaft 9 and by turning it drives the rack 6 to the rear. wagon-body until said rack shall have moved to the rear a distance equivalent to about the length of the slot 11, when the end wall of said slot will abut against the stud 12 on the link 13 and through this link the wagon-body will be moved to the rear. The body will beginto dump when it reaches a position of unstable equilibrium,. turning then about the fulcrum-studs 4: and its tail will drop suddenly This drop would put a sud.-

to the ground.

The rack does not act to move the den strain on the rack and pinion, and perhaps also cause injury to the operator through the sudden and forcible rotation of the crank, but for the fact of the slotted connection of the body with the rack. \Vhen the body starts to dump, the stud 12 is at the front end of the keeper-slot 11, and this slot will be of such length that when the body dumps the said stud will merely move rearward along the keeper-slot on the rack without imparting any movementto the rack at all. After the load is dumped the empty body is first brought down level upon the frame by means of the rack and pinion and then drawn forward to its normal position. The righting of the empty body is rendered the more easy because of the fact that the coupling-point 14: is set so far forward that after the body is dumped the link 13 will be found disposed (see Fig. 2) forty-five degrees with the frame and at about a right angle with dumped body. The dumping operation will vary, of course, somewhat with the disposition of the center of gravity of the load in the body and also with the character of the material constituting the load. If the center of gravity is well to the tail of the body, the dump will take place automatically when the body is moved back and relatively early, and if the center of gravity is well forward the operator will have to assist in dumping or tilting the body after the forward ends of the keepers 5 shall have impinged on the studs 4. If the Weight of the load is distributed uniformly, the body will begin to dump when the forward ends of the keepers 5 shall have reached the fulcrum-studs.

It will be noted that the important feature of this invention is the slotted connection between the Wagon-body and the means for moving the body on the frame, which construction permits the body to dump without throwing a sudden strain or jar on said operating means, and according to thepresentinvention this object is attained by employing a rigid or stiff link coupled at one end to the body Well forward of the dumping-fulcrum and extending thence forward, being coupled at the other end to the operating means, the connection at one end of said link being slotted, so that when the body tilts in dumping its movement will be independent of the operating means. The body is pushed to the rear for dumping and pulled or drawn for bringing it back to its place on the frame. In the construction described the means employed for moving the body is a rack and pinion, the slot being on the rack; but it is not necessary to employ a rack and pinion, and, indeed, it may be preferable for economic reasons to employ the device illustrated in Fig. 6. This device consists of an endless chain 6 on sheaves 7, mounted rotatively on the frame and having in said chain a long slotted link 11, the slot in which is engaged by the stud 12 of the link 13. As in the construction previously described, the link is made of two bars to embrace the chain or rack laterally, as seen in Fig. 3. The chain (3 is operated from the crank-shaft 9, about which it is wound. It may be proper to state that both endless chains and rack-aml-pinion devices have been before employed for operating the bodies of dumpingwagons; but so far as known they have not had the slotted connection with a rigid link, as herein shown, and have not been so constructed as to push the body back for dumping and pull it forward for righting it. Fig. 6 shows the position of the chain and other points when the body has just begun to turn in dumping.

Haing thus described my invention, 1 claim 1. A dumping-wagon having a frame, a body mounted movably of the frame for dumping, and means for moving the body on the frame, said means having in it a slotted coupling of sufficient length to permit the body to turn in dumping without communicating its movement to the operator.

2. A dumping-wagon, having a frame, a body mounted movably on the frame for d umping, means mounted on the frame for moving the body, said means being slotted, and a rigid link coupled to the body at its rear end and coupled at its front end to said body-moving means on the frame through the medium of said slot, whereby the body may dump without communicating its movement to the said means on the frame.

3. A dumping-wagon having a frame, a l )od y slidably mounted on the frame for dumping, a rack slidable in the frame, a means for driving said rack, and a rigid link connecting said rack with the body, said link having a slotted connection atone of its ends, whereby the body may dump without communicating its movement to said rack.

4. A dumping-wagonhavinga frame,abody mounted slidably on the frame for dumping, a rack slidably mounted in the frame, a shaft rotatively mounted in the frame for operating said rack, and a link coupled at its rear end to the wagonbod y forward of the fulcrumpoint, and having at its other end a slotted connection with said rack, whereby the body is permitted to move in dumping without communicating its movement to the rack.

5. A dumping-wagon,having a fr:une,a body mounted slidably on the frame for dumping, a rack slidably mounted in the frame and provided with a keeper-slot, a link coupled at its rear end to the body forward of the fulcrumpoint, a stud in the other end of the link which engages and coacts with the keeper-slot in the said rack, and a pinion for operating said rack.

6. A dumping-wagomhavinge frame,abody mounted slidably on said frame for dumping, fulcrum-studs and limiting-keepers on the frame and body to control the movements of the dumping-body, a rack and pinion on the frame for operating the body, and a link coupling said rack to the body forward of the fulcrum-point, said link having a slotted eonneetion at its forward end to permit the body to dump Without imparting its movement to 10 the rack.

In witness whereof I have hereunto signed my name, this 29th day of September, 1903, in the presence of two subscribing Witnesses.

WILLIAM OSCAR SHADBOUL Witnesses:

HENRY CONNETT, WILLIAM J. FIRTH.