US1317484A - Car-trnloabek - Google Patents

Description

B. N. DAVIS.

CAR uNLoAnEH.

APPLICATION FILED FEB. T, 1918.

Patented Sept. 30, 1919.

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B. N. DAVIS.

CAR UNLOADER.

APPLICATION FILED FEB. 7, IsI.

Patemed sept. 30,1919.

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CAR UNLOADER.

APPLICATION FILED FEB. 7. 19m.

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BEMISS N. DAVIS, OF NEW ORLEANS, LOUISIANA.

CAR-UNLOADER.

Specification of Letters Patent.

Patented Sept. 30, 1919.

Application filed February 7, 1918. Serial No. 215,767.

To all 'whom t may concern:

Be it known that I, BEMiss N. DAVIS, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Car-Unloaders, of which the following is a full, clear, and exact description.

This invention relates to unloading machinery for gondola cars and other vehicles, the object being to provide a power device or apparatus with which the unloading of a car provided with traps in its bottom and laden with coal, grain, earth, broken stone or other similar material in bulk1 can be accomplished with despatch.

The improved apparatus consists essentially of a bridge-like structure under which the loaded car is to be run and its load acted upon by a shovel carried by an overhead truck or carriage, and controlled by means of cables moved by one or more engines or motors.

The invention will be described in detail with reference to the accompanying drawing, in which:

Figure 1 is a side elevation, conventionally illustrated, of thecomplete device;

Fig. 2 is an end elevation of the same similarly illustrated;

Fig. 3 is a detail of the upper end of the bridge structure;

Fig. 4 is a plan of the carriage or truck;

Fig. 5 isa side elevation of the carriage or truck;

Fig. 6 is a front elevation of the shovel;

Fig. 7 is a side elevation of the shovel; and

Fig. 8 is a section of the shovel on line mof Fig. 7

The frame-Work or structure in which the working `parts of the device are mounted and operated is a bridge-like affair consist'- ing of two upright frames A and A, respectively, spaced apart to provide for a railway track or other roadway between them7 in which the car or other vehicle B may stand while being unloaded. Each of these structures or frames consists of any lines a and these are shown anchored in concrete piers ZJ. The top of each frame A and A carries overhanging portions c eX- tending toward each other but separated by a space which extends from end to end of the structure. Fig. 3 shows the upper end of this structure in detail, and it illustrates a track-rail 0l carried lby each of the structures and together forming a longitudinal track running the length of the structure and along which a truck or carriage is to be moved. This truck or carriage is illustrated in Figs. 4 and 5 and consists of a frame or body F hav-ing two axles each carrying flanged wheels 7 adapted to run upon the rails d. Suitably mounted in bearings in this truck are two parallel transverse shafts g and h, respectively, the former carrying a pinion g located in the central plane of the truck and two idlers g3 each' side of the pinion, and also carrying a gear wheel g2 at one end whichV meshes with pinion k2 on the end of shaft h. Shaft t carries a flanged drum 7L located at the middle line of the truck. l y

This truck or carriage which can be moved to any point along the track d by means hereinafter referred to, carries a shovel with which the unloading is accomplished. This shovel is illustrated in Figs. 67 and 8 in detail and is conventionally indicated in full and dotted lines in Figs. 1 and 2 by the letter I. rIhe shovel comprises a blade i and a handle z", the parts being built up of channels and T-bars riveted together inV accordance with best engineering practice to afford strength and proper weight for the work in hand. The handle in crosssection is substantially square as seen in Fig. 8, two of the sides being formed by channel ironsA i2 facing each other and separated to form a vertical space s between them. Within this space and attached to one of the channel bars is a vertical rack j;

the upper and lower ends of the channels are secured together by cross plates 4, whilev` the space between the channels is entirely open from end to end of the handle. The handle of the shovel extends up through an openingI in the body of the truck with the horizontal shaft g therein passing through the space 3 in the handle and with the pinion g on the shaft engaging with the rack y' of the shovel handle and the idlers g3 bearing upon the inner faces of the handle and holding the gear and rack in engagement. It will be seen, therefore, that by rotating the pinion g, the shovel will be raised or lowered vertically and that in any position to which it may have been adj usted, the shovel is free to swing upon a pivot formed by the engaging teeth of the rack and pinion.

rlhe truck or carriage is movable along the overhead rails Z by means of a cable Z or sprocket chain attached to the truck and passing over sheaves Z and Z2 at each end of the structure, the slieave Z2 being on the same shaft with a worm gear driven by a reversible engine L; the worm and gear affording a lock to hold the truck at any point to which it may have been moved. The shovel z' is lowered by gravity and elevated by power supplied by a second engine M. A cable 0 runs from one of thedrunis of VVKthe engine over a sheave o atone end of the structure, thence to the truck where it is wound upon the drinn Zi. Pulling upon this cable 'by the engine rotates shaft Zi, pinion h2, gear g2 and the pinion g', and the latter engaging with the rack in the shovel handle lifts the shovel. Releasing the cable at the drum of the engine allows the shovel to fall by its own weight. To the front and back faces of the shovel are attached two other cables, respectively, o and g which lead over suitable guide pulleys at'Y the respective ends of the structure to two other drums of the engine M. By causing the engine to wind up the cable on one ofV mid position under the structure, as shown i in Fig. l. YIf the contents of the car does not immediately start to flow through the openings, the truck is moved along the track until the shovel is poised directly above the pocket, whereupon it is allowedV to suddenly drop upon the load to start the flow. If the load is frozen or for any reason does not at once commence to flow out, the shovel can be raised and dropped repeatedly until the fiow is free. When the middle portion of the load has emptied, the truck is moved toward one end of the car where the shovel is allowed to drop and bury itself in the load and is then dragged toward the center of the car to push the load toward the opening. This is repeated until the contents of the` car at one end has been emptied, whereupon the truck is shifted to bring the shovel over the opposite end of thecar where thef saine operations are repeated. Skilful op-V erators at thetwo engines can in this manner very quickly unload a gondola car.

It will be understood that other mechanism for raising and lowering the shovel may be used in place ofthe pinion and rack described without departing from the spirit of my invention.V Y

I claim: Y Y Y Y 1. An unloader for a car having openings in its Yfloor, comprising a structure provided with an overhead track, a carriage adapted? 2. An unloader for a car havingopenings Y in its oor, comprising a structure having an overhead track, a carriage adjustable along said track, a winding drum and pinion mounted on said carriage and geared together, a shovel having a two-faced blade and handle in alinement with one another and provided with a rack in engagement with said pinion, whereby said shovel mayV be raised and lowered, and swung to and fro to permit the shovel whileso rocked to sweep the contents of the car through its floor openings lfrom both ends of the car.

3. A car unloader comprising a carriage adapted to move along a track, a shovel suspended upon said vcarriage' and having a handle provided Vwith a longitudinal passage, a rack extending along one side of said passage, a shaft carried by said carriage and extending through the passage in the handle, a pinion on said shaft engaging said rack, and idlers on said shaft for guiding said handle in its pivotal movement about said shaft. Y

4. Anv unloader for a car having openings in its floor, comprising a structure provided with an overhead track extendingY lengthwise of the car, a carriage on said track, a shovel carried vby the carriage and mounted for pivotal movementrrelative to Vthe carriage, and means forV positively swinging the shovel in both directions about its pivotal axis.

5. An unloader for a oar having` openings in its floor, comprising` a structure provided With an overhead track, extending lengthwise of the oar, a carriage on said track, a shovel carried by the carriage and mounted for both pivotal and vertically reciprocatory movement relative to the cai'- 10 riage, means for imparting reoipiocatory BEMIss N. DAVIS.

Witnesses ROY VILLS, F. EISLER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C. v

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