US729746A - Attachment for winding-shafts for dumping-doors for cars. - Google Patents

Description

Nd. 729,746, PATENTED J NBQ, 190s. FILER. V y

ATTACHMENT FOR WINDING SHAFTS FOR DUMPING DOORS FDR CARS.

APPLICATION FILED FEB. 16, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

Normans. T "PATENTE/D IUNE2,1903: A. FILER.

ATTACHMENT FOR WINDING SHAFTS FOR DUMPING DOORS FOR CARS.

APPLICATION FILED FEB. 16, 1903.

2 SHEETS-SHEET 2..

){0 MODEL.

l 0 M ,7 g who mmw" m mum 2 T v Patented June 2 1903: l

ALBERT FILER, OF ALTOONA, PENNSYLVANIA.

ATTACHMENT FOR WlNDING-SHAFTS FOR DUMPlNG-D OORS FOR CARS.

SPECIFICATION forming part of Letters Patent No. 729,746, dated June 2, 1903. 7 Application filed February 16,1903. Serial No. 143,558. (No model.

in the county of Blair and State of Pennsyl Vania, have invented certain new andnseful Improvements in Attachments for Winding- Shafts for Dumping-Doors for Cars; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to improvements in attachments for winding-shafts for dumping-doors for cars; and the object is to sim plify and improve the art relating thereto by providing a gravityactin g attachment to such winding-shaft which is certain in action, effective in holding the shaft in relative position to which turned, and strong and durable in the uses and purposes intended.

With these objects in view the invention embodies a ratchet-wl1eel mounted on the Winding-shaft a gravity-acting holding-pawl having multiple engagement with the ratchetwheel, and a protective shoe or housing for the multiple ratchet-pawl, all as will be hereinafter fully disclosed, and the novelty thereof particularly and distinctly pointed out in the claims.

It will be premised that the invention is applicable to either a shaft disposed longitudinally on the car or to a shaft arranged transversely across the car, and I have shown both of these arrangements in the drawings. It may be also stated that the device may be readily accommodated to shafts used for the purpose and positioned differently from those shown in the accompanying illustrations. 7

I have fully and clearly illustrated the improvements as practically applied in the accompanying drawings, wherein Figure 1 is a vertical transverse section of a car having a hopper-bottom with hinged dumping-doors opened and closed by chain connections toawinding-shaft mou ntcd across the hopper and showing the improvements associated therewith. Fig. 2 is aside elevation of the car-hopper and front view in elevation of my improved device. Fig. 3 is a transverse vertical section of a car having hinged dropdoors and indicating the application of the invention to winding-shafts running parallel with the sides of the car. Fig; 4 is a detail View in elevation of theinvention in locked position, the shoe or shield being indicated in dotted lines in order to show the multiple pawl clearly. Fig.- 5 is a detail view in elevation of the-improvements, showing the staypawl removed from engagement and the multiple pawl unlocked. Fig. 6 is a transverse section through thehousing and guide-shoe.

Referring to the drawings, it will be seen that in Fig. l the attachment or deviceis operatively applied to a hopper-bottom car havinghinged dump-doors connected bywinding chains to a winding-shaft mounted across the hopper, and to the projecting end of the shaft is operatively connected my improved device. In this arrangement, A designates the body of the car. 1 is the hopper. 2 3are the dropping dump-doors; 4, the winding chains; 5, thewinding-shaft, and 6 designates in a general way the improved device mounted at the side of the car with the end of the shaft journaled therein.

In Fig. 3 of the drawings the device is shown as mounted and applied to shafts journaled lengthwise of the carand the chains connected to doors which fall down and inward on their hinges. The car A is shown as being of the flat-bottom construction, and

reference being had to this figure, A designates the car-body; 7, the winding-shafts; 8,

the winding chains; 9, the dumping-doors,and

6 the device generally mounted and secured as extending from the sides of the car at right angles to the face thereof. It will thus be seen that the improvements are readily applicable to dumping-cars of different makes, shapes, or styles.

Particularly describing the device, 10 designates a suitable support to be secured to a convenient place on the car, with the winding-shaft journaled therein. On the windin g-shaf t is fixedly mounted the ratchet-wheel 11, formed with a squared hub 12, adapted to to wind up the chains. This pawl consists of a stem or handle 13, formed with a fiat head 14, provided with two teeth 16 with a notch between them to straddle any one of the teeth of the ratchet-wheel. The stem of the pawl 13 is supported by a pivot-bolt 17, placed at such point that the stem of the pawl may stand at an incline when in en gagement and be maintained in such position and returned to engagement by gravity. It will be perceived that the tooth 15 acts to hold the wheel against return movement and that the wheel may be rotated in the other direction notwithstanding the engagement of the pawl, which will be intermittently thrown back to escape the released tooth and then reengaged by gravity. A stop-pin 18 is provided to prevent the pawl from falling too far back beyond the vertical line, and the stem of the pawl may be extended below the pivotal point, as shown, for convenient manipulation when releasement is required to permit the dumping-doors to open.

The locking-pawl consists of a curved fiat bar or arm 19, formed with a multiple of teeth, as shown, to engage their complement of teeth of the ratchet-wheel, either detach ably, as when winding or unwinding the chains, or to lock the ratchet-wheel with the shaft and the associated mechanism in position. This multiple-tooth engagement is a strong one and removes the load from a single tooth and distributes the strain equally to the number of teeth engaged. The pawlarm 19 is pivotally mounted on a bearing-pin 20 and is extended below its bearing and provided with a weighted portion 21 of such force as to effect the engagement by gravity.

To prevent accident to and shield the pawlarm 19, as well as to guide it in its action, I provide a shoe or housing 22, within which the pawl has movement and is prevented from being moved beyond the point required, as indicated in the drawings. This shoe, shield, or housing consists of a flat curved plate having an inwardly-extending flange 25 along its lower edge, which flange sets against the face of the support. The shoe is secured in position by any proper fastenings and also has the bearing-pin 2O projected through it.

'Any suitable means may be employed to lock and hold the pawl 19 in engagement with the ratchet-wheel. I have illustrated a means consisting of a pin-hole 24:, made through the lower part of the shoe and the pawl-arm, and a locking-pin 25, detachably fitted to the pinhole.

From the foregoing description,taken in connection with the illustrations,it will be readily discovered that the manipulation of the device, its effect on the associated mechanism, and its operation may be stated as follows: When it is necessary to permit the dumpingdoors to open, all that is to be done is to withdraw the locking-pin and disengage the pawl 13, when the weight on the doors will force them open and the load thus discharged through them. Then to restore the dumpingdoors to closed position the pawl 13 is moved intoengagement with the ratchet-wheel, the shaft-turning means applied and actuated, and the chains wound up on the shaft, carrying with them the dumping-doors, which being thus closed the locking-pin is placed in looking position, and pawl 19 thus locked in the ratchet-wheel and the winding-sha ft thus held locked securely against rotation.

Having described my invention, what I claim is- 1. The combination with the winding-shaft and a ratchet-wheel fixed on the shaft and having a squared hub-piece, of a pawl to hold the ratchet-wheel against return movement, the stem of the pawl being pivotallysupported and standing approximately vertical and adapted to engage the ratchet-wheel by gravity, and a pivotally-mounted flat curved pawlarm provided with a plurality of teeth to engage the ratchet-wheel and weighted at its lower end beyond the pivotal support, and a locking means to lock the pawl-arm in engagement with the ratchet-wheel.

2. The combination with the winding-shaft and a ratchet-wheel fixed on the shaft and having a squared hub-piece, of a pawl to hold the ratchet-wheel against return movement, the stem of the pawl being pivotally supported and standing approximately vertical and adapted to engage the ratchet-wheel by gravity, a pivotally-mounted flat curved pawl-arm provided with a plurality of teeth to engage the ratchet-wheel and weighted at its lower end beyond the pivoted support, a shield over the curved pawl-arm, and a locking means to lock the pawl-arm in engagement with the ratchet-wheel.

In testimony whereof I affix my signature in presence of witnesses.

ALBERT FILER.

Witnesses:

J. D. HICKS, Gr. W. BUCK, JAooB FOSTER.

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