US695803A

US695803A - Dumping-car.

Info

Publication number: US695803A
Application number: US7844401A
Authority: US
Inventors: Frederick C Dunham
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-10-12
Filing date: 1901-10-12
Publication date: 1902-03-18
Anticipated expiration: 1919-03-18

Description

No. 695,803. l. PatentedM'ar. IB, |902'.

F. C. DUNHAM.

DUMPING CAR.

Application 'mud om 12, 1901.)

(No Model.)

me Nonms mns co., PnomLiYHo.. wAsMmnTou. o. c.

attached to the sills b, one on each side of car,

FREDERICK C. DUNIIAM, OF

i a'rnr Peron..

FLEMINGTON, NEV JERSEY.

DUfWPlNG-C/R.

SIEEQI'EGATION forming part of Letters Patent No. 695,803, dated March 18, 1 902.

Application filed October 12,1901. Serial No. 78,444. (No model.)

To (all whom it may concern.-

Be tknown that I, FREDERICK O. DUNHAM, residing at Flemington, in the county of Hu nA terdon and State of New Jersey, have invented a new and useful Improvement in Dumping-Cars, of which the following is a specification.

My invention relates particularly to the method of opening and closing the doors on dumping-cars, and more especially on railroad coal, ore, or other cars that are equipped with folding or swinging doors applied to a hopper.

When cars are loaded and the doors of hopper are sustaining the weight of material on them, the doors open very suddenly when the fastenings are released, as the load is usually from two to four tons. If a wrench is used on the winding-shaft for the purpose of opening the doors, the operator is liable to injury from the rapid movement of the wrench.

The main object of my invention is to avoid this liability of accident. For this purpose I have invented a ratchet-wheel which is to be substituted for the ordinary ratchet-wheel, and which can be operated by a round bar of iron instead of a special wrench, and is described in the drawings annexed hereto, they being a part of this specification.

Figure lis a side elevation of a coal-car with the device attached in its position; Fig. 2, a detached elevation of a dumping device with the doors closed; Fig. 3, same as Fig. 2 with the doors open. Fig. 4 is an enlarged front view of ratchet-wheel. Fig. 5 is a side view of the ratchet-wheel.

Similar letters refer to similar parts in the several views.

In gondolas or open cars with a drop bottom the power is usually applied to a winding-shaft for operating the mechanism which Opens and closes the doors. The end of this shaft is shown at A in Fig. 1, and the body of the car is designated by letter B, under which is the hopper C. The winding-shaft A is mounted in bearings, which are usually and the winding-shaft running transversely across and extending through the sides of car and having a crank-arm D secured to shaft near the bearings. The outer end of crank D is connected to a set of levers or links E and E by a pitman or hinged joint, and thc opposite end of levers E and E are connected to the doors F and F at m by a hinged joint also. Vhen the winding-shaft A is revolved, the `opening made by the doors F and F. is governed by the length of crank D. The winding-shaft A is generally provided with a square shank on one of its outer ends, upon which is fixed a ratchet-wheel which turns with the shaft. Outside the ratchet-wheel the square shank is extended sufficiently for a wrench to be applied.

To secure the doors F and F' from opening while the car is in transit, a pawl G is hinged to the side of car-body B in a position that will allow its outer end to engage the notches or teeth in ratchet-wheel. Thus the turning of winding-shaft A cannot occur until the pawl G is thrown out of engagement with ratchet-wheel.

All of the above is in general use, and no claim is madefor any part of same being new.

In place of the ratchet-wheel (which is generally furnished with a series of notches all around its outer periphery) l have applied the wheel XV, which is shown detached in Figs. 4t and 5. This wheel is shown with two notches in its periphery at c and c', theiformer being in position to secure the shaft A from turning and the doors F and F closed when the pawl G is engaged with it. When the pawl is engaged with the notch c', the doors are then partly open. When the pawl G-is thrown back, the shaft A will turn until the cranks D hang perpendicularly, and the doors F and F will open or drop downward as the shaft revolves. Upon the face of the wheel W and projecting outward from same is a round pin or fulcrum, as shown at d, Figs. 4 and 5. This pin is strengthened part of its length by an inclined web f, the Web projecting about one-half of the length of the pin. On the same face of wheel W is anothemectangular protuberance g, about onehalf the length of the pin cl, with webs 7c and 7s on each side of same and extending part of the way around the wheel W. Instead of having the square shank on the shaft A eX- tend outward beyond the wheel W a thin collar or head is forged on shaft to secure the wheel W from coming olf the shaft, so that there is nothing to prevent alever e from ben IOO ing applied, as shown in Figs. 2 and 3, and the pin d used as a fulcrum for same, the projection g acting as the Weight to be lifted. When the doors are opened, by turning the shaft A, as in Fig. 2, the lever cannot be applied to secure a purchase in any other Way than as shown, as the webs or ribs 7c and 7c' prevent the projection g from use as a fulcrum. The pin d being longer than the projection g and the Web fextending half the length of the pin necessitates the lever being applied in an oblique manner and not parallel with the body of the car. When the doors F and F are started and the Weight of the load revolves the shaft rapidly, the lever is retained in the hands of the operator and is entirely loose from the shaft A or Wheel W. Should it be held in close proximity to the wheel W as it revolves, the web h would strike the lever and crowd it away fromthe wheel W. To close the doors F and F, the lever is applied as shown in Fig. 3, again using the pin g as a fulcrum, and by a downward pull the motion is reversed, turning shaft A and closing the doors. It the distance traveled by the outer end of lever be greater than the operator can conveniently pull, the pawl G can be dropped and engaged in the notch C', leaving the door partly open.

- Any piece of iron of reasonable length can be used to open or close the doors instead of a special wrench being provided, which is a matter of economy, and the question of safety to the operator is eliminated, as the danger is done away with.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A dumping-car With a Winding-shaft in combination with a ratchet-Wheel, a fulcrum and Web formed with the Wheel and a projection g, on the face of said Wheel.

2. A dumping-car With Winding-shaft A in combination with a ratchet-Wheel W having on its surface a fulcrum d, strengthened by Webf and a projection g with Webs k and 7.9 substantially as described and for purposes set forth.

3. A ratchet-wheel XV for dumping-cars having on its outer surface a projecting pin d With Webfinclining from the face of Wheel to one-half the length of pin, in combination with the projection g and the webs 7., and k inclining from face of wheel to the same length as projection g, as and for the purposes specified.

4. A ratchet-Wheel W with two notches cv and c in its outer periphery in combination with the fulcrum d and its inclined Web fand the projection g with the inclined webs 7c and 7c on each side 0f same, substantially as described. l

In testimony whereof I have signed my name to this specilication in the presence of two subscribing Witnesses.

FREDERICK C. DUNIIAM.

Witnesses:

GEO. K. LARGE, NEDWILL SUTPHIN.