US788850A

US788850A - Brake-head.

Info

Publication number: US788850A
Application number: US20192204A
Authority: US
Inventors: Fitz William Sargent
Original assignee: American Brake Shoe and Foundry Co
Current assignee: American Brake Shoe and Foundry Co
Priority date: 1904-04-06
Filing date: 1904-04-06
Publication date: 1905-05-02
Anticipated expiration: 1922-05-02

Description

PATENTED MAY 2, 1905.

BRAKE HEAD.

APPLICATION FILED APR. 6, 1904.

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v No. 788,850. PATENTED MAY 2, 1905.

- FITZ WILLIAM SARGENT.

BRAKE HEAD.

APPLIOATZON FILED APR. 6, 1904.

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PATENT OEEIcE.

FITZ WILLIAM SARGENT, OF MAHWAl-I, NEW JERSEY, ASSIGNOR TO AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRAKE-HEAD.

SPECIFICATION forming part of Letters Patent No. 788,850, dated May 2, 1905.

Application filed April 6', 1904. Serial No. 201,922.

To all whom it may concern.-

Be it known that I, FI'rz WILLIAM SARGENT, a citizen of the United States, residing at Mahwah, in the county of Bergen and State of New Jersey, have invented a certain new and useful Brake-Head, of which the following is a specification. I

My invention relates to railway brakes and particularly to the brake heads that go on the ends of the beams to hold the wearing sole or shoe, and to the means for attachment of the head to the shoe. The objects of the invention are, to provide a superior malleable brake head, and superior means for attachment of the same to the wearing shoe; to provide a brake head and shoe with resilient attaching means between them; to provide a through the brake shoe and brake head fixed thereon, and Figure 2 is a plan view of the same;

Figure 3 is a central cross section on line 3 in Figure 1;

Figure 1 is a central longitudinal section through a shoe and head showing a modified form of attaching back on the cast shoe and means for fixingit on the head, and Figure 5 is a plan view of the same device;

Figures 6 and 7 are cross sections taken respectively on lines 6 and 7 in Figure 4:, and

Figure 8 is a detail partial section of the end of the shoe and the brake head showing the modified method of fastening the shoe back to the brake head.

The exigencies of heavy railway trafiic have rendered it highly impracticable to usea brake shoe in which the wearing sole is attached to the brake head by cast lugs &c. and cast shoes with malleable metal backing for strengthening the same have come into pretty general use. The cast brake heads are also dangerous because of the heavy jars they receive and the danger of breaking the lugs thereon in driving the attaching key home in the lugs. To overcome many of these disadvantages I use a brake head formed of forged plate metal. Thus in Figure 1 it will be seen that I form of a single plate the head 13 which has a flat portion fitting the contour of the back of the shoe and two rearwardly extending wings 12 with an opening therein for the brake beam and with upturned lips 14 punched out of the center of the same and forming attaching lugs to receive the lug 11 of the shoe 9. The shoe is provided with a malleable backing 10 anchored therein and a lug 11 as indicatedin the drawing in Figure 1' made resilient as shown and described in my co-pending application No.192,489. I utilize the metal punched out in forming the opening 13 to provide the inwardly projecting flanges 16 which as will be seen in Figure 3 meet together and form an abutment between the two wings 12 of the brake head, making a very secure construction. By reason of the resiliency of the shoe lug 11 and of the flanges 14 on the brake head it will be seen that when the brake shoe key 18 is driven home it will meet with elastic resistance and that the lugs respectively on the brake shoe and brake head may fit together with some resiliency, which makes a tight and secure lit of the key and of the two parts together and prevent rattling as well as making a more firm hold thereon.

In Figures 1 to 7 I have shown a modification in which the brake head has fiat bottom portions 20 provided with openings 19 near the ends thereof to receive the upwardly bent lugs 11 which are punched out of the malleable metal backing 10-on the cast brake shoe 9. The side wings 22 are provided with openings in this case to receive the brake beam, and it will be understood of course that when desired a cross flange may be punched out of these two wings to form an abutment between the two wings as shown at 16 in Figure 3. For additional security against lateral sheer and to make a stiffer support for the brake shoe I may extend the cast metal of the shoe upward as shown in Figures I and 5 at 21, and this fits in an opening in the base portion 20 of the brake head. It will be understood of course that the lugs 11 are formed by punching out slits in the plate forming the backing of the shoe and that they at first project laterally as straight studs, and when the shoe is attached to the head they may be hammered down as shown in Figure 4, making a perfectly secure hold upon the brake head.

In Figure 8 is illustrated a modification of the attachment of the lug 11 by which instead of projecting through an opening 19 in the brake head it engages the outer end of the brake head 20 and is bent down as shown in the figure; in this case the lug 11 is punched out of the end of the backing of the shoe, and the projection of the backing may be buried in the shoe as at 23 beyond the point of attachment of the lug 11", as, will be evident from Figure 8.

It will be observed that in this device the brake head is formed entirely of a single piece of forged metal, and all the attaching points and strengthening points of the same are made by wings or lugs punched out of the plate itself; also that in the attachment to the shoe there is some latitude for resilient contact which makes a perfectly tight fit and prevents any play of the shoe upon the head or any rattling of the same. In the form of Figure 1 it will seen that in the putting together of the two parts both the

lugs

11 and 14 are resilient and make an extremely tight fit, and also at the top ends of the lugs 11 they abut against the cross flanges 17 of the brake head so as to additionally give a tight fit between the parts. Other advantages of the device will readily occur to those familiar with the art.

Having thus described my invention and illustrated its use, what I claim as new, and desire to secure by Letters Patent, is the following:

1. A brake head comprising a generally U- shaped wrought metal plate, bent to conform brake shoe with a malleable metal backing having resilient attaching means thereon, substantially as described.

5. A brake head comprising a single piece of forged metal with a base to fit the back of the shoe, two side flanges with openings therein to receive, the brake beam, said side flanges having integral lugs thereon abutting with each other and integral lugs for receiving the shoe and key, substantially as described.

6: A forged metal brake head having resilientlugs to engage the shoe lugs.

7 The combination with a brake head having a series of openings therein, of a brake shoe having a projecting stud to engage one of said openings and malleable lugs to be bent. into engagement with other openings of the head.

8. A brake head formed of a single plate of forged metal having a seating face and two wings therein perforated to receive the brake beam, and integral lugs on the two wings engaging each other to stiffen the wings, substantially as described.

9. The combination with abrake head having openings therein, of a brake shoe having a ductile metal backing with integral lugs thereon, adapted to engage the openings in the brake head and be, bent down over the same to. secure the shoe to the head.

In testimony whereof I have hereunder signed my name in the presence of the two subscribed witnesses.

FITZ WILLIAM SARGENT.

Witnesses:

M. B. JUSTICE, E. W. VAN HOUTEN.