US1729010A - Brake shoe - Google Patents

Description

Sept. 24, 1929. PATERSQN 1,729,010

BRAKE SHOE Filed May 15, 1928 Im/en Zor:

' flay/d Paflerson.

Patented Sept. 24, 1929 UNITED- STATES PATENT OFFICE 3mm snon v Application filed Kay 15,

The principal objectsof this invention are to minimize the maintenance costs n 11111 way equipment in. connection with brake shoe j a distance farther than the supplies by providing a brake shoe head which is adapted for application to either end of a brake beam and which is so con.

structed as to enable the beam to be' suspended from the head in the proper position, no matter which side it may be on.

,The principal feature of the invention consists in the novel .construction of the head whereby the casting may be fitted on either end'of a brake beam and being lprovided with a pair of notched recesses will hang in the desired position from a brake beam support.

In the drawings, Figure 1 is an inside elevational view of a brake shoe head structure place.

according to my invention.

Figure 2 is a side elevational view of the brake shoe. g

Figure 3 is a side elevational view showing the brake shoe and head assembled and i1- lurslirating the application of this suspending Figure 4 is an elevational face view of the brake shoe head.

Figure 5 is a back View of the brake'shoe to be fitted thereinto.

Figure 6 is a longitudinal sectional View through the brake shoe and head assembled.

In the handling of railwaygrolling stock it has been found very diificult to maintain equalized stocks of right and left brake shoes and it is highly desirable that a brake shoe ,35 head be devised which will be adaptable to y 7 passes through the pocket 2 and the circular either end of the brake beam structure.

Such a construction is illustrated in the accompanying drawings and the brake shoe head 1 is formed of cast metal having a pocket 2 formed centrally of the length thereof and having one side 3 thereof open while the closed end'4 of said pocket is provided with a circular opening 5.

A Web 6 extends longitudinally centrally of the back of the shoe and connects the pocket structure 2 with the end portions 7 which are recessed longitudinally centrally of their width, having a slot 8 extending therethrou h.

A pair 0 notches 9 are formed in the body 1928; Serial No. 277,870.

= of the shoe opening toward the face thereof.-

These notches are arranged transversely of the shoe and extend backwardly from the face v longitudinal .sl0t8. m r 5 The central portion of the shoe between the notches 9 is formed with wtapered recess 10to receive a central lug member 11 arranged on the shoe 12. This lug member is formed of a air of lugs which are con led transversely y a steel cross bar 13 mou ded thereinto. A fastening key '14 is adapted to be inserted in the longitudinal-slot in the shoe head and passing through the openings 15 l in the shoe back structure which extends under the cross bar 13 andlocks the shoe in Side recesses 16 are arranged at either side of the central slot above and below the notches 9. These are adapted to receive the paired side lugs 17 on the shoe. 'It will be seen that the side lugs 17 fitting into the recesses 16 close the notches 9.

A link 18 which is suspended from the car truck in a suitable manner has its looped end secured within the upper one of the notches, 9 in. the brake shoe head and it will be seen that it is held therein against any possibility of removal by the brake shoe when it is keyed in place closing the notches by means of the side lugs 17. 4

A brake shoe head such as described is inserted-on to the channel iron structure of the brake beam and the truss bar of the beam opening 5.

A bevelled boss 19 is arranged at the outward side of. the closed end of the pocket to accommodate the angle shaped truss bar of the brake beam structure whichis not herein shown.

A brake shoe head constructed as described is .very easily attached to the beam and may be drawn u tight to the end of the beam by means 0 the truss bar, and as it is 'perfectly s mmetrical in its construction, both sides o the pocket 2 may be reversed and used for. either. side. This eliminates the necessity for carrying right and left castings 'for brake shoe heads, thereby greatly reducing the cost of maintenance 0 such castings. Further, the structure is so simple that it eliminates many costly and uncertain -methods of fastening the shoe and of supporting the beam and is therefore highly desirable.

What I claim as my invention is:

1. In a brake shoe, the combination with a brake beam, of a shoe head .cast with a pocket opening to one side adapted to receive the end of .the beam, and having a transverse notch formed centrally thereof, said shoe head having a rounded notch at either side of the transverse'notch and having a longitudinal key-way intersecting all of said notches, a suspension link adapted to enter either of the notches arranged either side of the centre notch, a. shoe having a projecting portion adapted to fit into the central notch and having side lugs adapted to interlock with the shoe head, and a key adapted to be inserted through said keyway to lock the shoe to the head.

2. In a brake shoe, a head formed of cast iron having a ke channel arran ed centrally of the widt of its face an formed with recesses in the outer sides toward the 1 ends and having a pair of notches extending completely across the face said notches having rounded inner ends, said head having a rectangular pocket formed therein between said notches and extending to the rear therea of and opening to one side of the shoe head, a shoe having airs of In s on either side adapted to fit into the 'si e recesses in the head and having a central portion provided with a cross bar ada ted to extend into line with the key channe a key ada ted to extend into said channel to lock t e shoe to said head, and a suspension link adapted to rest in the base of either of the notches in the shoe head back of the shoe to suspend the shoe in an operable position.

" DAVID PATERSON.

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