US1462876A

US1462876A - Method of manufacturing connecting pins

Info

Publication number: US1462876A
Application number: US532320A
Authority: US
Inventors: Elmer M Summerhays
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-01-27
Filing date: 1922-01-27
Publication date: 1923-07-24
Anticipated expiration: 1940-07-24

Description

July 24, 1923 1,462,876

E. M. SUMMERHAYS METHOD OF MANUFACTURING CONNECTING PINS Filed Jan. 27. 1922 flis'; J.

WITNESSESS INVENTOR MQ' 6Z4. 4 M6 61 ,1

. ATTORNEYS Patented July 2%, i923.

insane are.

ELIVIER M. SUMMERHAYS, OF HAMMOND, INDIANA, ASSIGNOR T FREDERIC SfiI-IAE- FEE, OF PITTSBURGH, PENNSYLVANIA.

METHOD OF MANUFACTURING CONNECTING PINS.

Application filed January 27, 1922. Serial No. 532,320.

To all whom it may concern:

Be it known that 1, Emma M. SUMMER- HAYS. a citizen of the United States, and a resident of Hammond, in the county of Lake a and State of Indiana, have invented a new and useful Improvement in Methods of Manufacturing Connecting Pins, of which the following is a specification.

The invention relates to the manufacture of pins having forged entering ends, and heads at their other ends, and particularly to the manufacture of connecting pins similarly characterized, now used in railway brake operating equipment. Such connect- 1e ing pins are provided at the sides of their entering ends with grooves connected to each other at their inner ends by holes extending through the body of the pins, in which holes and grooves there are placed strips of bendable metal adapted to be turned outwardly tohold the pins in place.

In the manufacture of these pins'two operations are required, one to forge the entering end of the pin, and the other to upset its opposite end to form a head. This is objectionable not only because of the manufacturing cost involved in the two operations, but also in the case of the connecting pins because their upset heads contain more metal than is required to make them of a strengthcommensurate with the holding power of the strip of bendable metal at the other end.

The object of this invention is to provide a method of manufacturing headed pins having forged ends in general, and in particular headed connecting pins having grooves formed at their entering ends, whereby the heads of the pins may be 4.0 formed simultaneously with the forging of the other ends and the heads reduced in si-fle', with the result that the cost of manufacture may be materially reduced.

The invention may be best explained with reference to the accompanying drawings, Fig. 1 is a side view of a connecting pin of the character explained above; Fig. 2 an end view of the head of the pin; Fig. 3 a longitudinal sectional view of the pair of pin; and Fig. 4: a plan view of one of the dies in Fig. 3.

In the practice of the invention in its applicability to the manufacture of pins of the type illustrated in Fig. 1, a head is formed at the end of a pin by means of the same dies that are used. for forging the grooves and hole in the entering end of the pin. A

cylindrical blank of proper length is heated and placed between a pair of dies formed at one end for forging the grooves and hole in the entering end of the pin, and formed at their other end to spread the opposite end of the blank laterally to form an elongate head overhanging the body of the pin.

is formed in the die portions 4: by spreading the metal laterally.

As shown in Figs. 1 and 2 the pin thus formed comprises a cylindrical body portion 5, side grooves 6 at its entering end having a hole connecting the inner endsof the grooves to each other, and a head 8. The head being of elongate form and overhanging the body 5 of the pin only at its ends, contains much less metal than the round heads heretofore formed by upsetting the ends of the pins. The pin is much more economical to manufacture than those heretofore produced, both because of the smaller amount of metal used and of the elimination of the head-forming operation as a step in addition to the forging of the entermg end. In finished form the pin is provided with a strip 9 of bendable metalflwhich extends through the hole 7 and lies in the grooves 6 so that the pin may be readily inserted through the holes in members it is intended to connect.

I claim:

1. The method of forming a cylindrical blank and in a single operation a headed pin so forging dies used in the manufacture of the having a forged entering end, which comprises spreading laterally, by the same dies for forging the grooves in the entering end used for forging the entering end of the of the pin, the other end of the blank to pin, the other-end of the blank to form an form an elongate head having its ends overelongate head overhanging the body of the hanging the body of the pin.

5 pin. In testimony whereof, I sign my name.

2. The method of forming from aheated ELMER M. SUh/IMERHAYS. cylindrical blank and ina single operation a headed connecting pin having a forged I Witnesses: groove at its entering end, which comprises Jos. THOMPSON,

10 spreading laterally, by the same dies used 'H. E. RICE.