US1713552A

US1713552A - Hammer claw

Info

Publication number: US1713552A
Application number: US193503A
Authority: US
Inventors: John A Pike
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-05-23
Filing date: 1927-05-23
Publication date: 1929-05-21
Anticipated expiration: 1946-05-21

Description

May 1 929. 1 1,713,552

HAMMER dLAw Filed May 23, 1927 INVENTOR,

Jah nA Pike A TTORNEY.

Patented May 21, 1929.

JOHN A. PIKE, 0] LOS ANGELES, CALIFORNIA.

CLAW.

Application filed Kay :3,

My invention relates to carpenters tools and more particularly to an improved clawhammer.

As generally made the claw part of a claw hammer is formed in such a manner that when nails are hard to pull their heads often crumple and slip through the claw so that some other means must be employed to draw them. This happens more frequently with the modern wire nails in common use than was the case with the old fashioned cut nails.

e primary object of my invention is to provide an improved claw hammer having its claw equipped with flanges which will engage an exceptionally large portion of a nail head, in a manner to prevent the crumpling thereof, and will insure efficient operation in the pullin of nails.

Other 0 jects and advantages will appear hereinafter and while I show herewith and will describe a preferred form of construction, I desire it to be understood that I do not confine myinvention to such referred form but that various changes an adaptations may be made therein without departing from the spirit of my invention as hereinafter claimed.

Referring to the drawings which accompmy this specification and form a part there- 0 Fig. 1 is a side view of a hammer having the features embodied in my invention.

Fig, 2 is a view of the hammer shown in Ffig. 1 as seen looking at the handle end there- 0 puller.

The hammer, as a whole, may be any type of claw hammer, with the usual form of head 10 and handle 11, except that a groove 12 of rectangular cross-section, which increases in 1927. Scrill I0. 193,508.

depth from the end of the claw 13 toward the eye 14 of the hammer and increases in width in a reverse direction, is formed in the under site sides of the usual cleft 16, which flanges 7 decrease in width and in thickness from their beginning near the end of the claw toward the eye of the hammer. The claw is thus adapted for pulling nails of all sizes, lar er ones hemg en aged toward the end 0 the claw, where toward the eye, where flanges 15 are thinner.

It will be observed that the bottom of the groove 12 1s flat or rather that it lies in a curved plane, the elements of which taken transversely of the hammer claw, are arallel to like elements of the curved plane orming the outer surface of the claw, so that flanges 15 are of uniform thickness on every transverse line. This arrangement of the groove anges 15 are thicker, and smaller ones provides uniform pressure against the under side of the head of the nail being pulled and therefore overcomes the tendency to deflect upwardly the edge portions 'of the head of the nail, thus reducing to a minimum the danger of bending the head out of shape and dragging the hammerfree therefrom without extracting the nail. The ed e portions of the head of a nail being .pul may also abut against the straight sides of the groove and be thereby further safeguarded against distortion.

The operation of my improved claw hammer in pulling a nail is clearly indicated in Figs. 3 and 4. Flanges 15 of the claw enga the underside of the nail-head 17 square y and close to the shank 18 thereof so that there is an unusually large contact surface between the nail head and flanges 15 and also a uniform pulling strain on that contact surface which does not tend to crumple the sides of the nail head as the beveled faces of the usual claw cleft do.

Having thus illustrated and described my invention, I claim:

1. A claw hammer having a groove in the concave side of the claw thereof which roduces flanges of varying width and thick- 100 ness on either side of the cleft thereof, said groove being flat from side to side thereof and the flanges wherein said groove is formed being adapted to engage directly against all 5 portions of the under surface of the head of a Wire nailfro'm its shank to its'oute-r edges.

2. A clawhammer having betweenthe clawsthereof a groove which is rectangular in cross-section, the bottom of said groove being adapted to engage the under surface of the head of a nail being pulled, the side portions of said groove forming vertical surfaces against Whieh opposite sides of the head of such'nail may abut.

JOHN A. PIKE.