US1454239A - Nail puller - Google Patents

Description

May8,19 I I v NAIL FULLER Filed Jan. 15. 1922 1 I ToR Patented May.8;, 1923.

umrsn STATES GOZO KA AMUB or new YORK, N. 'Y.

NAIL ruLL R.

i Application filed January 13,1922; Serial No. 528,899.

To allwhomz't may concern! Be it known that I, Gozo KAWAMURA, a subject of the Emperor of Japan, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Nail Pull ers, of which the followin is a full, clear, and exact description, suc h others skilled in the'art to which it appertains to make and use the same.

This invention relates to pulling implements and, with-respect to its more sp'e'cific features, to instruments for extracting nails, spikes or similar objects.

An object of the invention is to provide a powerful and'simple tool which will extract nails of a greatyar-iety'of sizes.

Another object is to provide a nail extra-ctor which may be used with a minimum of damage to the wood or other material; which the nail is embedded.

Another object is to provide a'construction for a nail extractor which will produce little or nodeformation of the nail;

Another object of the invention is to provide a tool of this characterwhich issimple and positive in action and easily handled.

Other objects will be in part obvious and in part pointed out hereinafter. f

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the'construc'tion herein after set forth, and, the scope of theapplication of which will be indicated in the following claims. f

One embodiment which theinvention may assume in practice is shown in the drawingswhich include Figure 1, which is a plan of the implement;

Fig. 2, a side elevation showing details of the nail lifting member;

Fig. 3, a cross sectional view taken through the nail lifting member;

Fig. 4: a cross sectional view showing a nail in position within the lifting member;

Figs. 5, 6 and 7, showing the manner. in

which the extractoris employed to pull a nail; and

Fig. 8, which shows a modified form of the nail lifting member.

In the various figures similar reference characters relate to similar parts.

In carrying out the invention the implement is constructed from a round metal bar as will enable 'or shaft 1, bent at oneend to form lifting member 2 and; at the other end to form lifting member 3. Lifting member '2l-ies in. a plane at right angles to lifting member 3.

Both lifting members 2 and 3 arebentgto' an of the bar 1 for reasons which will become evident from the description of the manner in which the instrument is'employedfi The nail or'similar' article which'isto be extractangle greater than 90 degrees with the shank ed by this instrument is-pulled by the ends 'of lifting members 2 and 3, and for this pun.

pose the ends of these members are hollowed or chambered to form a longitudinal recess 5 which is larger than the head of the largest size nail which the instrumentis designed to pull. Onthe outerside of'lifting member 2 there is cut a slot 6 extending from its outer surface to the recess 5 and having sharp'cutting edges 8. The faces 7 of slot '6 flare outwardly so that the edges or jaws 8 project towardeach other, inposition to cut'into the shank of a nail when-in serted therein. The slot for receiving :the shank of a nail may beformed asshownin F 1g. 2, wherein jaws 8 taper very slightly;

or it may be of the form'as' shown in'-F 1g.'8

wherein the slot 10 is of triangular form, which adapts the instrument for use with a greater variety of sizes of nails. The tip of lifting member 2 is ground to---a sharp cutting edge 4, the purpose of which will beidescribed hereinafter. The -outer*lportion"of lifting member 2 is flattened at the groove.

6], to provide a face 11 wherebythe tool is made thinneratthe point where it isto be inserted under'the head of -'a'nai'l',"fa,cilitating itsinsertion thereunder. Lifting member 8 is constructed similar to lifting member 2, but preferably of different proportions, adapting it to be used with a different.

range of sizes of nails. A convenient arrangement is to construct l1ft1ng member 2 with jaws as shown in Fig. 2, and lifting member 3 with aws as illustrated in Fig. 8.

Assuming that a nail 12 is to be extracted from a wooden member in which it is embedded, that end of the tool which fits the nail 12 more closely is placed on the wood so that the sharp edge 4 encircles the head of nail 12. A blow of a hammer upon the face 9, located approximately at the bend of bar 1, forces the round cutting edge L of the tool into the wood. The wood fibres are thus cut in a ring which prevents the lifting .of splinters from the wood by the operatlons following. The tool is then-raised gradually and subsequent hammer blows on face 9 drive edge 4 of the tool toward and under the head of nail 12, so that the recess 5 receives the head of the nail and slot '6 receives its shank. The lifting member 3 of the tool exerted on lifting member 3. When. the nail it'obe'extracted has a small head like afinis-hingnail, or none at all, it is desirableito givea'n extra blow-of the hammer on striking-face-'-9 when the tool has beeniraised nearly-to the drawing-position. This causes the sharpedges 8 of -thevslot 6 to bite into the shank of the nail and hold it firmly .while being pulled.

'Since" lifting member 8 is in a horizontal.

position during the pulling operations, it

' readily used again. vassist in engaging the nail by. cutting a pasisagetoease the'jaws into grippin position,

serves as a convenient handle, making it possible to exert great force upon the nail,

and-prevents the tool'fromturning sidewise as it is pulled.

- The sharpened edges l of the tool serve to -make the damage to the wood very slight,

while inserting the tool under the head of the nail, so that boards, planks or thelike,

from-Which nailsihave been drawn may be sharpened edges 4 also The length ofthe lifting members 2 and '3 should be v-madezsubstantially as long as the longest-nail which'the tool is to pull. This enables-the tool to draw any nail up to thatlength with little or-nobending, since the tool isthen turned through a circular arc of only about 60 degrees. Nails so pulled may be used again without the necessity-of straightening ;With I a toolconstructed as above described {all sizes of nails having shanks which-maybe received inthe slot 6 or 10, as

the case may be, -may-be easily extracted,

shown since; there is enormous; leyerageprovided in thelproportionate lengths of the. shank of bar 1 and the lifting members 2 and 3. The proportions of the instrument may be varied to pull any size of nail or spike.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

it isalsoz to loe understood thatthe language used in the followingclaims is intended .to cover all of the generic and specific features of-the invention herein described, and all statements of'the scope 0f the invention which, as a matter of language, might be said-to fall therebe-tween. Having describedmy invention, what I cla1m as new and desire toseoure by Letters Patent is:

1. A nail puller including a shaft having, on each end, a lifting arms extending at a substantial angle to said shaft, said shaft and one of said arms lying in a plane at an angleztothat in which, said-shaft and the other said arm lies, each of said arms having a nail extracting device.

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