US1271474A - Dump-car. - Google Patents

Description

' H. R. KEITHLEY.

DUMP CAR.

APPUCATIGN FILED JULY 24. 19]]- PatentedJuly 2, 1918.

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H. R. KEITHLEY.

DUMP CAR.

APPLICATION FILED JULY 24.1911.

1,27 1,474; Patented July 2,1918.

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s'rarns manna carton HERBERT R. KEITHLEY, OF MICHIGAN CITY, INDIANA, ASSIGNOR EEO ALBERT R.

COUDEN, TRUSTEE, OF MICHIGAN CITY, INDIANA.

DUMP-CAR.

Specification 01' Letters Patent.

Patented July 2, 1913.

. Application filed July 24, 1917. Serial No. 182,461.

which are illustrated in the accompanying drawings, forming a part thereof.

This invention relates to dump cars, and is shown and described as applied to a fiat bottom car having a series of doors hinged adjacent the center line of the car and opening toward the sides thereof, though applicable to dump cars of other types.

The object of the invention is to provide improved means for controlling the doors; and it consists of mechanism such as is hereinafter described and as illustrated in the accompanying drawings showing a preferred embodiment of the invention and in which Figure 1 is a detail transverse sectional view of a car, one of the doors being shown in closed position in solid lines and in open position in dotted lines;

Fig. 2 is a similar view fication;

Fig. 3 is a view similar to Fig. 1 showing the door partially open;

Fig. 4 is a detail longitudinal sectional view of the car showing the door-closing mechanism in elevation;

Fig. 5 is a detail transverse sectional view of the car showing an end view of the door controlling mechanism;

showing a modi- Fig. 6 is a detail section on the line 66 of Fig. 5; and

Fig. 7 is a detail longitudinal sectional view of the bottom of a car showing a series of doors and the controlling mechanism therefor.

The center sills of a car are shown at 10, one of the cross bearers at 11, a body bolster at 12, and a side wall of the car at 13. The dumping doors 14: may be of any number, and are hinged, as shown at 15, to brackets suitably secured to the center sills between the cross bearers and the bolsters, the door openings extending substantially to the side walls 13. Ordinarily in cars of this type six doors on each side are employed and are located between the two body bolsters.

All of the doors on each Side may be controlled by a single operating shaft, though preferably they are arranged in sets of three.

The operating shaft 16 is journaled in the cross bearers, including the body bolster, the bearing for the shaft taking the form, in each of these elements, of a slot 17 extending longitudinally of the beam and permitting some lateral movement of the shaft. Upon the shaft 16 is fixed a pair of crank arms 18, cooperating with each of the doors 14, each of these crank arms being connected with the door by means of a link 19 of greater length than the arm. Each link 19 is provided with a lateral recess 20 for engaging the shaft when the door is closed.

Upon the end of the shaft there is swiveled a short crank arm 21, having a socket 22 for receiving a hand bar by which it may be manually turned. A ratchet wheeel 23, having double-faced teeth, is fixed upon the shaft adjacent the crank arm 21. A double ended pawl 24, pivoted to the crank arm 21, coiiperates with the ratchet wheel and may be shifted to turn it in either direction. A retaining dog 25, pivotally secured to the bolster, cooperates with the ratchet wheel 23 to hold it against rotation when the door is closed. A dog 26, also pivoted to one of the cross bearers or bolsters, is adapted to bear against the shaft to prevent its lateral movementwhen the door is closed.

The position and length of the slot 17 are such that when the door is closed the shaft 16 is below its outer dge and the weight of the door and its load are transmitted to the shaft through the link 19, in line with the wrist pin of the crank arm 18. In order to open the door, the parts being in the position shown in Fig. 5, the dog 26 is thrown back away from the shaft 16, and the dog 25 away from the ratchet wheel. The pawl 24 is reversed, and the hand bar having been thrust into the socket 22 the shaft is turned by an upward movement of the crank arm 21. This movement carries the lower end of the link 19 backwardly andshifts the shaft 16 toward the outer end of the slot 17, whereupon the weight of the load on the door becomes effective to rotate and slide the shaft, permitting the door to drop to the position shown in dotted lines in Fig. 1.

The end door, being located over the truck, is not permitted to drop as far as the inner doors. In order that a plurality of doors may be operated by thesame shaft, it is essential that the several links 19 be of equal length, and consequently that lost modoor edge, a crank arm on the s tionbe provided between the links and the end door as the latter is arrested in its descent by the truck. This is accomplished by attaching to the door a bracket 27, having a depending arm 28 slotted longitudinall or transverse to the plane of the door. en the door is arrested by the truck, the pivot pin of the link engaging this slot is free to drop to the lower end thereof, as shown in dotted lines in Fig. 2. When the shaft is turned to raise the door this pivot pin slides to the upper end of the slot and there remains.

In the operation of closing the door the pawl 24: is shifted to the position of Fig. 5 and the dog 25 is thrown down into engagement with the ratchet. Downward pressure upon the crank arm 21 turns the shaft in the proper direction for raising the door, the ratchet teeth clicking past the dog 25, which is provided with a plurality of teeth-engaging shoulders, as shown, for the purpose of preventing the shaft from turning backwardly in whatever position it may occupy in the slot 17 while the operator is drawing back the crank arm for the successive strokes.

I claim as my invention 1. In a car, in combination, a hinged drop door, an operating shaft adjacent the swinging end of the door journaled in slotted bearings, the slots extending transverse to the path of the door edge, a crank arm on the shaft, and a link of greater length than the crank arm and connecting such arm with the door.

2. In a car, in combination, a hinged drop door, an operating shaft adjacent the swinging end of the door journaled in slotted bearings, the slots extending transverse to the path of the door edge, a crank arm on the shaft, and a link of greater length than the crank arm and connecting such arm with the door and having a lateral recess for engaging the shaft.

In a car, in combination, a hinged door,

a laterally shiftable operating shaft mo-vable toward and away from the pagh of the a t, and a link of greater length thanthe arm for connecting the arm with the door.

4. In a car, in combination, a hinged door, a laterally shiftable operating shaft movable toward and away from the path of the door edge, a crank arm on the shaft, and a linkof greater length than the arm for connecting the arm with the door and being laterally recessed to engage the shaft.

5. In a car, in combination, a hinged door, a laterally shiftable operating shaft movable toward and away from the path of the door edge, a crank arm on the shaft, a link of greater length than the arm for connecting the arm with the door, and a dog for preventin the lateral movement ofthe shaft away from the path of the door.

6. In a car, in combination, a hinged door, a laterally shiftable operating shaft movable toward and away from the path of the door edge, a crank arm on the shaft, a link of greater length than the arm for connecting the arm with the door, and pawl and ratchet mechanism for turning the shaft.

7. In a car, in combination, a hinged door, a laterally shiftable operating shaft movable toward and away from the path of the door edge, a crank arm on the shaft, a link of greater length than the arm for connecting the arm with the door, and pawl and ratchet mechanism for turning theshaft, the pawl being reversible.

8. In a car, in combination, a hinged door, a laterally shiftable operating shaft movable toward and away from the path of the door edge, a crank arm on the shaft, a link of greater length than the arm for connecting the arm with the door, pawl and ratchet mechanism for turning the shaft, and a hinged adjacent the longitudinal center line 1 thereof, an operating shaft journaled in the cross bearers adjacent the outer margin of the door openings, crank arms on the shaft, one pair thereof cooperating with each door,

- a link connectingeach crank arm with one of the doors and belng of greater length than the crank arm, the connection between one pair of said links and one of the doors being by means of brackets secured to the door and slotted transversely of the plane of the door to receive the pivots of the links.

- HERBERT R. KEITHLEY. Witnesses:

CLARA E. LAMB, ELLIS W. TEST.

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