US1154160A - Brake-step. - Google Patents

Description

W. S. ATWOOD.

I BRAKE STEP.

APPLICATION FILED Nov.9, 19M.

LIMJQQQl Pmmmwwnmm niaTTnn sTaTas iaaTniaT cierren.

WILLIAM S. ATWOOD, MQNTREAL, QUEBEC, CANDA.

BRAKE-STEP.

Applicatonvled November 9, 1914. Serial No. 871.055.

To all whom t may concern Be it known that I, WILLIAM S. A'rwoon, a citiaen -ofthe Dominion of Canada, and resident of the -city of Montreal, in the Province of Quebec and Dominion of Canada., have invented certain new and useful lmprovements in Brake-Steps, of which the following is ay full, clear, and exact description.

This invention relates to improvements in,

proved and simplified means for supporting the brake ratchet and pawl.

rlhe invention consists essentially of a flanged'plate having a plurality of holes stamped' therein in such a way as to form.

burs projectingvfrom the upper surface of the plate and supporting brackets secured to the lower side of the plate prefeiably by electric welding. i

rllhe brake ratchet and directly in the plate, and in a cover strap.

1n the drawings which illustrate the invention: Figure 1 is a plan view of the brake step complete. plan view of the step with a brake ratchet and pawl and covei' strap removed. Fig. 3 is a front elevation of the step complete. Fig. 1l is an end elevation. Fig. 5 is a section on the line 5 5, Fig. 1. Fig. 6 is a section of the plate 11 on the line 6-.6, Fig. 1. f

Referring` more particularly to the drawings, 11 designates a sheet of metal of rectangular form stamped up to `form an upwardly projecting flange 12' on one long and two short sides, and stamped down to forml a depending flange 13 on the remaining long side, which will be hereafter called the outeredge The surface of the plate is for the most part formed with'a number yof regularly .spaced apertures 14 punched from below in such a way asto form burs 15 projecting from the upper surface of the plate. These' burs give a sure and safe foot hold for a trainman operating the brake.

r1`he plate is supported toward each end Y' brackets 16 of stamped sheet metal suitpawl are ournaled Fig. 2 is a partialy lagainst revolution on the brake shaft.

ablyx flanged to impart stiffness. These brackets extendfrom tlie rear edge of the plate to. thefrontiedge, and are shrouded behind the depending flange 13. When placed in position the brackets are electrically welded to the plate, as shown in Fig. 5, so that the three members become one.

Toward one end of the plate the apertures 11 are 4,omitted and two comparatively large apertures 17 and 18 formed a suitable distance apart, and also a suitable number of bolt holes 19. The aperture 17 which is Specication of Letters Patent. Patmgd gpt; 2L 1915, I

slightly larger than the aperture 18, forms a bearing for the hub of tlie'brake ratchet 20, while the aperture 18 forms a bearing for the trunnion' 21 of the pawl 22.y A strap 23 is provided overlying the ratchet and pawl and as apertures 24 and 25 formed therein corresponding with the apertures 17 and 18, and designed for the same purpose.

rivets passing through the holes 19 so that it may be removed to replace a broken ratchet or pawl. 1t is obvious that the strap may be electrically welded to the plate after the ratchet and pawl are in position, but this has the disadvantage that replacements of the ratchet or pawl are im Yaossible.

The ratchet wheel 20 is made with either square or round bore, as required, butpreferably with square bore, for the reason that no pins or keys are required to hold it The step is made up complete with the ratchet and pawl in place,A and the cover strap bolted down, and all that/is necessary in applying 'the device either' to new or old cars, is to rivet or bolt the brackets to the end of the car and pass the brake shaft through the ratchet. 1t will thus be seen that there is only one piece to be handled in shipping or attach- -ing the device to cars so that great economy of time is effected. rl`he step being formed entirely of stamped sheet metal is foi all practical purposes unbreakable, and is in addition very much lighter than a cast iron step. V1`he burs on the surface provide much better foothold than ispossible with either cast iron or wooden steps, and the down turned flange on one side provides for the escape of water and cinders, so that the step will give good foothold under all conditions of weather.

Having thus described my invention, what I claim is as follows 1. A brake step comprising a flanged tread The strap isv secured to the plate by bolts or plate burred on the upper "surface, and

flanged brackete supporting said plate, and Welded thereto.A

` 2. A brake step comprising aanged platey of stamped sheet metal, annular burs formed on the tread surface of said plate, yand flanged brackets of stamped. Isheet metal Welded to Vsaid plate.

3. A brake stepl comprising a perforated' tread. plate of stamped sheet metal, having an upstandng flange on the three sides, and a depending flange on the fourth side, an-

nular burs surrounding the perforatons7 a" 'plurality of flanged brackets of stamped sheetmetal welded to-the tread plate.

4. A brake step comprising an apertured tread plate, supporting brackets therefor,

an apertured strap carried by Said plate, a ratchet Wheel having the hub thereof jour- -`naled in the apertures ofthe plate and strap, v

and a trunnoned paWl having the trunnons thereof journaled in the plate-and strap apertures.

5. In a. brake `step, a perforated tread *I 25 standing flange on three sides, anda depending flange on the fourth sde, annular burs Surrounding' certainof said perforatons,

plate of stamped sheet metal having an* up- WILLIAM s. ATWooD.

VVtneSses.:` l A p' v S. R. W. ALLEN,

G. M. MORELAND.

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