US1623227A - Brake mechanism - Google Patents

Description

ril 5 1927. Ap H. E. BARTscH BRAKE MECHANISM Filed March s. 192e 2 sheets-sheet 1 April 5 1927.

H, E. BARTscH BRAKE MECHANISM Filed umn s. 192e 2 sheets-sheet z Patented Apr. 5, 1927.

UNITED STATES HERBERT E. BARTSCH, OF CIIICAG, ILLINO ASSIGNOR TO UNIVERSAL DRAFT GEAR ATTACHMENT CO., A CORPORATION OF ILLINOIS.

BRAKE MEcHANIsM.

Application filed March 8, 1925. Serial No. 93,032.

This invention relates to brake mechanism and more particularly to brake mechanism 'for railway cars.

One of the objects ot' the invention is the provision of new and improved means for supporting the multiplying or reversible lever and attendant mechanism.

Another object of the invention is the provision of new and improved means for supporting the multiplying lever whereby the vibration incident tothe movement of the car will cause the support to automatically move to inoperative position when the brakes are released.

A still further object oi the invention is the provision oi brake operating mechanism that is cheap to manu-facture, easily assembled, eiiicient in operation, rugged in construction, and that is not likely to become deranged'or get out of order.

Other and further objects and advantages of the invention will appear 'from the fol-` lowing description taken in connection with the accompanying drawings, in which liig. 1 is a longitudinal vertical section ot a port-ion o1c a` car showing the invention in position thereon;

Fig. 2 is a plan view of a portion oi a car, showing the invention in position thereon;

Fi 3 is a top plan view of a portion o'lf a car showing a portion of the invention in position thereon;

Fig. et is a side elevation with parts in section a '-d parte broken away;

IF is a detail sectional view on the line 5 o-E Fig. t; and

Fig. 6 is a vertical section on broken line G--G of Fig. A1.

On the drawings, the reference character 10 designates a railway car having the longitudinally arranged sills 11 and the transverse members 12, 13 and 14. The step vfor supporting the brake drum 15 is shown at 16 and the brake stal at 17. Thel brake stati' is provided with the usual Wheel or lever 18 for rotating the brake stati for applying the brakes, as is usual in such constructions. For convenience of description only, the end oit' the car toward the right in Fig. 1 will be considered the front of the car.

The car is provided with the usual air brake cylinder 19, the piston 21 oit' which is connected to the brake lever 22 for applying the brakes with compressed air in the usual manner.

Suitable means are provided for applying the brakes by hand power from the brake staff 17. This means comprises an expansible and contractible connection 2O between the brake stati and lever, including a reversible or multiplying lever 23 which is so constructed and arranged that on the initial rotation of the brake stall the slack in said connection will be taken up quickly, and on further movement the brakes will be applied with great force. l

As shown, one end of the connection is in the form ot' a. flexible member or cable, as the chain 21, which is secured'to the drum 15 and is adapted to be wound there-A on. The opposite end or' the connection 2O 1s also in the toi-1n of a flexible member or cable, as the chain 27 which extends about the grooved reversible lever 23 and .is se-` cured in the anchor member 2li in any suitable manner. As shown, it isl attached in the manner disclosed in patent to VVrigl-ey, No. 1,543,467. The anchor member is connected to a support 25 which is rigidly connected to the frame work of the car. I

The cable or chain 27 is connected to the reversible lever 23 as at 30 in any suitable manner. The reversible lever and the means for connecting the cable thereto may be and preferably are substantially the same that disclosed in patent to Camp and Bartsch, No. 1,543,470, June 23, 1925, and need not be further described.

The two chains or cables 21 and 27 are preferably connected by a rod 28 which is slidably supported. by guides 29 and 31. The use of a rod eliminates the necessity of taklng up a great amount of slack in applying the brakes, as would be necessary were a single cable employed between the brake drum and the anchor, owing to the sag in the cable.

The reversible lever .3 is rotatably mounted in a bracket or jaw 32 which is slidably mounted on the inclined support 3S. The bracket 32 is ot' any suitable form, that shown being bifurcated to form a jaw and having one or more convex bearing surfaces 84 for slidably engaging the support 38. The furcations are united at their lower rear portions, as at l0.

The bracket or jaw 32 is connected to the izontal slot 3G and a vertical slot 37 intercepting` each other and adapted to receive adjacent links ot one end ot the chain 38 ior securing the saine thereto. The vertical slot 37 toi-ms shoulders 42 against which the link 43 ot` the chain engages to anchor the same. A cotter pin la in back oi the vertical link is adapted to prevent the disen` nagenientot' the chain lrom the jaw menilier. The slots are so constructed that the chain 38 cannot be removed unless the link a5 is iii-st turned to vertical position, aiter which the chain may be disengaged 'by movinl@r the same forwardly. The opposite end oit' the chain 38 is secured to the lever Q2 and. piston 2l as clearly shown in Fig. l of the drawings. The use of a flexible connection between the brake lever and the jaw 32 permits the brakes to be applied by the piston il without atl'eetingthe handbrake mechanisin.

The support 233 is attached at one end to the cross member l2 and has its opposite end oii'et and attached to the sill ll as clearly shown in Fig. 3.

In applyingthe brakes by hand the brake stall' 17 is rotated to wind the chain 2l on the drum l5 which in turn will rotate the reversible lever 23. The initial rotation ot the lever 23 will take up the slack rapidly and further rotation will set the brakes with the application ot considerable power. The aw 32 will slide upwardly along the guide or support 33. W'hen the brakes are released the vibration ot the car will cause the jaw 3Q. to slide downwardly along` the support 33 b v gravity.

It if thought from the "foregoing taken in connection with the accompanying` drawings that the construction and operation oia my device will be apparent to those skilled in the art and that various changes in size, shape, proportion and details ot construction may be niade without departing' from the spirit. and scope ot' the appended claims.

I claim as my invention:

l. In a brake mechanism 'for railway cars, a brake lever, a brake stati, an expansible and conti'actible connection between said stati' and lever, said connection comprising' a reversible lever, an inclined support, and means slidably mounted on said support for supporting said reversible lever.

Q. In a brake mechanism for railway cars, a brake lever, a biake statt, a connection including a` reversible lever operatively connected to said staff and lever, a connector jaw in which said lever is pivoted, inclined supporting` means, and means for slidably mounting said connector jaw o n said supporting means.

3. In a railway brake mechanism, an inclined support, a jaw havinga slot for engaging said support, a reversi'ble grooved lever journaled in said j aw to rotate in said slot, and cable anchoring means at one end ot' said jaw.

4i. In a. brake mechanism toi' railway cars, a brake staff, a brake lever, an expansible and contractible connection including:r a supporting member, between said stati'4 and lever, and means tor supporting' said member and ior Causingv the same to move to elevated position during` the application of the brake, said member being` returned by gravity to inoperative position when said brakes are released.

5. In a brake mechanism for railway cars, an inclined support, a aw member having a slot for receiving said support, and a reversible lever rotatably mounted in said slot, said j aw member being provided at its lower portion, opposite said ieversible lever, with means for anchoring a chain.

6. In a brake mechanism, a jaw member for supporting a reversible lever, an inclined supportingr bar, said member being lprovided with a slot for receivingl said supporting` bar, one end ot the lower portion ot said member being,- provided with alin'ed openings extending transversely therethrough and the opposite end being provided with vertical and horizontal intersecting slots tor 'forming an anchor for a chain.

In a railway brake mechanism, a brake stati", a brake lever, expansible and contractible mechanism between said statt' and lever. an inclined supporting member, means slidably mounted on said ineii'iber t'or siu'iporting a portion oit said n'ieehanix-ini, said means sliding` in the direction of said stati during' the application ot the brakes and sliding; by gravity in the opposite direction when the brakes are released.

S. In combination wth the undertraining of a railway car, brake operatingl mechanism located beneath said under'framing, said mechanism comprising a. quick takeup device, inclined supports secured to said undertraming, and means for slidably mountingsaid device on said supports.

In testimony whereof I affix my signature.

HERBERT E. BARTSCH.

Images