US505815A - Nail-puller - Google Patents

Description

(;No Model.) 4. 2 Sheets-Sheet 1.

G. J. CAPEWELL. NAIL FULLER.

No. 505,815. Patented Oct. 3, 1893.

.No Model.)

2 Sheets-Sheet 2- G. J. O'APEWELL.

' NAIL PULLER. No. 505,815. Patented Oct. 3.1.893.

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vlrkavdaw UNITED STATES PATENT OFFICE.

GEORGE J. CAPEWELL, OF HARTFORD, CONNECTICUT.

NAl L- PU LLER.

SPECIFICATION forming part of Letters Patent No. 505,815, dated October 3, 1893.

Application filed September 7, 1892. Serial No. 445,276. (No model.)

, To all whom it may concern.-

Be it known that I, GEORGE J. OAPEWELL, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in NaiLPullers, of which the following is a full, clear, and exact specification.

The invention relates to the class of tools made for extracting nails from boxes, cases, planks, boards or other places in which nails are set, the object being to provide a simple, powerful and easily operated tool of this class which can be used to rapidly'draw nails without bending and twisting them or mar-ring the material in which they are driven.

To this end the invention resides in a tool consisting of a guiding standard, a casing with grasping jaws, sliding upon the standard, a casing with a hammer-bar, hinged to the sliding j aw-casing, and alink hinged to the standard and to the hammer-bar casing, as more particularly hereinafter described and pointed out in the claims.

Referring to the accompanying drawings: Figure 1 is a side view of the puller. Fig. 2 is an edge view of the same. Fig. 3 is a vertical section. Fig. 4. is a side view of the puller illustrating the position of the parts in extracting a nail. Fig. 5 is a bottom view of the puller, and Fig. 6 is an edge view of a grasping jaw.

In the views 1 indicates a standard which is usually formed of a base 2 upon which the puller is stood when in use, and an upward projecting post 3 which supports the jaw casing 4. This casing which is preferably a hollow casting having an arm with a sleeve 5 sliding on the post 3, holds the nail grasping jaws 6, that in the construction shown have their outer corners rounded off and their inner edges hollowed out. Within the socket of the casing on their outer edges these jaws, that are normally forced apart by means of a spring 7, are provided with inclined or wedge faces 8 adapted to slide in contact with the rolls 9 journaled in the bottom of the casing so as to prevent the entire removal of the jaws but cause them to close together when forced down Without friction. To the upper part of this jaw casingis hinged a casing 10, preferably a hollow casting, which supports a hammer bar 11, having a suitable handle, in line with the upper end of the pulling jaws that are driven to grasp the nail by the blows of the bar which has a free reciprocation in its casing, except as limited by the stop-screw 12 that travels in a slot 13 to prevent the entire removal of the bar. To aprojection on one side of the hammer-bar casing one end of a link 14 is hinged, the opposite end of the link being hinged to the base 2 of the standard at the side of the post 3.

In use the base of the standard is placed adjacent to the nail and when the two casings are in line, by means of the hammer bar, the jaws are forced down to grasp the head. When the head is securely clutched the handle bar and its casing are bent over which action causes this casing to lift the casing with the jaws, upward in a perpendicular line, and

*draw the nail straight out without bending or twisting the nail, enlarging the hole from which it is pulled or moving the instrument so as to scratch or mar the surface of the material in which the nail was driven. When the handle bar is bent over the link forms the fulcrum of the lever and in the commencement of the pull the movable fulcrum of this lever handle and the hinges are in such relation that the leverage raises the jaws slowly with great power for starting the nail, but as the link is thrown over the jaws are lifted more rapidly after the nail has been started, and requires less power.

I claim as my invention- 1. A nail puller, consisting of a standard, a casing bearing grasping jaws sliding upon the standard, and a reciprocating lever handle with a movable fulcrum pivotally connected to the jaw casing, substantially as specified.

2. A nail puller, consisting of a standard, grasping jaws adapted to slide up and down the standard, an oscillating and reciprocating hammer bar connected with the jaws, and a connection between the hammer bar and the standard, substantially as specified.

3. A nail puller, consisting of a standard, a casing bearing grasping jaws, a hammer bar hinged to the jaw casing, and a link connecting the bar with the standard, substantially as specified.

4. A nail puller consisting of a standard, a

casing bearing grasping jaws sliding upon the standard, and a hammer bar hinged to the casing and connected with the standard, substantially as specified.

5 5. A nail puller consisting of a standard, a casing bearing grasping jaws sliding upon the standard, a bar casing hinged to the jaw casing, a hammer bar movable in the bar casing, and a link connecting the bar casing with the 10 standard, substantially as specified.

6. In combination in a nail puller, a casing bearing grasping jaws with wedges on their outer edges, the opening in the casing above the wedges being smaller than below, and rollers in the enlarged part of the opening in [5 the casing below the wedges and in contact with them, substantially as specified.

H. R. WILLIAMS, J. C. STEVENS.

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