US576462A

US576462A - Spike and drift-bolt puller

Info

Publication number: US576462A
Authority: US
Publication date: 1897-02-02
Anticipated expiration: 1914-02-02

Description

(m Model.) v

L. G. 'LOUNSBERRY GA ELL.

SPIKE AND DRIFT PULLE No. 576,462. Patented Feb. 2, 1897..

Minimal FNITED STATES PATENT OFFICE.

LAWRENCE O. LOUNSBERRY AND ALEXANDER CAMPBELL, OF ALBION, FLORIDA.

SPIKE AND DRIFT-BOLT PULLER.

SPECIFICATION forming part of Letters Patent No. 576,462, dated February 2, 1897. Application filed May 20, 1896. Serial No.592,355. (No model.)

To all whom, it may concern.-

Be it known that we, LAWRENCE O. LOUNS- BERRY and ALEXANDER CAMPBELL, citizens of the United States, residing at Albion, county of Levy, State of Florida, have invented a new and useful Spike and Drift-Bolt Puller, of which the following is a specification.

Our invention relates to improvements in spike and drift-bolt pullers; and the objects of our improvements are, first, to provide an instrument that can be quickly applied to the spike or bolt of any size; second, to provide an instrument that takes an immovable hold of the article to be pulled. We attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is a representation of the movable jaws. Fig. 2 is a side view of the puller, showing how the jaws are operated by the lever. Fig. 3 is a front view. of the foot of the puller, showing the jaws in position in the slots.

It will be noticed that the movable jaws B are narrower in their front width n than in the back width 0. The slots y in the foot G and the face of the foot- G along which these jaws move are made to correspond with the shape of the jaws, the object being to force the jaws inwardly as they are pushed out from the rear of the foot. The clutching-faces E of the jaws are made to slope back from thebottom, so that when the jaws are forced together the bottom edge will have a chance to work under the head of the spike or bolt. The circular projections O are threaded and fitted with two nuts m. Fig. 2 shows how the part 0 extends through the foot G, coming out at the back of the foot and passing through the part P of the lever L. The nuts m are to adjust the jaws to the lever, and with them the jaws can be fitted to different-sized spikes as desired. The lever L is adjusted to the foot G by the lever is pressed down the jaws B, being attached to it by means of the nuts m, will be pressed forward and inwardly, thus firmly clutching the spike or bolt.

D is a heel-piece attached to the bottom of the foot-piece G and acts as a brace for G, preventing the foot-piece from slipping away from the spike or bolt as it is being drawn.

The holes in the arm P are made sufliciently large to allow of some movement of the bolts 0 therein as the lever is oscillated. The holes also in the foot-piece G, through which the bolts 0 project,are made likewise large enough to allow of some movement of the bolts 0 therein. In drawing a spike or bolt, after the arm P comes in contact with the back of the foot G further converging movement of the jaws is prevented, and in the actual drawing of the spike the lever and footact as an integral structure. After a bolt has been partially drawn the jaws can be released by a reverse movement of the lever and a new hold secured any distance below the head by the jaws biting into the side of the bolt, owing to the converging movement of the jaws.

hat we claim as our invention is-- The combination in a spike and drift-bolt puller of the foot-piece G, made with the heelpiece D, fitted with converging jaws B which move in slots y, the converging jaws being connected to and operated by a lever L which is pivotally connected to the foot-piece G.

L. C. LOUNSBERRY. ALEX. CAMPBELL.

Witnesses FRED. OUBBERLY, E. A. OHEIRITON.