US743701A - Cross-head and pitman connection. - Google Patents

Description

7 UNITED STATES Patented November 10, 1903.

PATENT OFFICE.

ELMER FARMER, OF BRADDOOK, PENNSYLVANIA, A SSIGNOR TO THE AMERICAN STEEL & WIRE COMPANY, A CORPORATION OF NEW JERSEY.

CROSS-HEAD ANDVPITMAN CONNECTION;

SPEGIFIGATION forming part of Letters Patent No. 743,701, dated November 10, 1903.

Application filed May 4, 1903. Serial No, 155,464. (No model.)

To all whom it may concern:

Be it known that I, ELMER FARMER,Of Braddock, Allegheny county, Pennsylvania, have invented a new and useful Cross-Head and Pitman Connection, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 illustrates in side elevation a crosshead and pitman connection constructed in accordance with my invention. Fig. 2 is a vertical cross-section on the line II II of Fig.

1. Fig. 3 is a top plan view, and Fig. 4 is a longitudinal section on the line IV IV of Fig. 1.

My invention has been especially designed for use in connection with such machines as wire-nail machines, in which the wear of the bearing between the pitman and the crosshead of the upsetting device has been very severe and in the constructions heretofore employed has resulted in the rapid destruction of the parts. This has been a matter of serious consequence, necessitating the making of frequent repairs and replacement of the parts of the machine, all of which entail expense and delay.

In the accompanying drawings, 2 represents a reciprocating cross-head, and 3 is a pitman having a yoke 3' for the reception of an ordinary crank, by which the pitman is reciprocated. At the inner end of the pitman and preferably integral therewith is a rounded bearing portion 4, and the shank of the pitman between the bearing portion 4 and the yoke is formed with a transverse slot 5.

6 is a bearing brass or block, which is set in a forked recess 2 at the rear end of the cross-head and may be secured therein by suitable means, such as a pin or screw. It receives and serves as a bearing for the bearing portion 4:. In the slot 5, back of the bearing portion 4 and fitting against the same, I set a detachable bearing brass or block 7,

key 8, which passes through opposite holes I x in the forked end of the cross-head and extends through the slot in the pitman. The key 8 may be held against longitudinal motion by set-screws 9. It will thus be seen that the bearings 6 and 7 are held in the crosshead with great security, but that in the event of wear the loose motion may be taken up merely by interposing liners between the key and the brass 7. When the Wear is sufficient to necessitate replacement of the brasses, the latter can be removed by detaching the key 8, and they can then be replaced with new brasses, which are secured by the key inlike manner.

Within the scope of my invention as defined in the claims parts of myimprovement may be modified.

1. A pitman connection comprising in combination with the pitman and its end hearing, a part to which the pitman is pivotally coupled, a bearing block attached to said part, a second bearing-block fitted in a slot in the pitmau, and a key passing through said slot and connected to the part with which the pitman is coupled; substantially as described.

2. A pitman connection comprising in combination with the pitman, a part to which the pitman is pi votally connected, a bearing-block fitted in a slot in the pitman, anda key passing through the slot and connected to the" part with which the pitman is pivotally connected, said pitman having a bearing at the end with said part 5 substantially as described. In testimony whereof I have hereunto set

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