US1449400A - Hand tool - Google Patents

Description

Mar. 27, 1923.

O. D. HAPGOOD HAND TOOL Filed Mar. 22, 1922 INVENTOR 0i l q ay o a! ATTORNEY Patented ar. 27, 1923.

OSCAR D. HAPGOOD, 0F MONTAGUE, MASSACHUSETTS, ASSIGNOR T0 GOODELL-IPRATT COMPANY, OF GREENFIELD, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

HAND TOOL.

Application filed March 22, 1922.

1 0 all whom it may concern:

Be it known that I, OSCAR D. HAPGOOD, a citizen of the United States of America, residing at Montague, county of Franklin,

and State of Massachusetts, U. S. A., have invented new and useful Improvements in Hand Tools, of which the following is a specification.

This invention relates to hand tools, such for instance as screw drivers, in which a metal shank is secured to a handle of wood or other suitable material and firmly held in position.

The principal object of the present invention is to provide a tool in which the shank is firmly secured to the handle, both against pulling out, and against turning, the construction being such that the handle cannot come off unless it is destroyed.

A further object of the invention is to produce a. construction in which the force of a hammer or other instrument is transmitted directly through the shank from the upper portion of the tool to the working end. A still further object of the invention is the provision of means for preventing the handle from splitting while the parts are being assembled.

In the drawings accompanying and forming part of this specification, in which I have illustrated a preferred embodiment of my invention;

Figure 1 illustrates, partly in central longitudinal section. a screw driver made in accordance with the present invention;

Fig. 2 shows the different parts of the tool ready to be assembled;

Fig. 3 is a top plan view of the same; and Fig. 4 is a cross-section taken approximately on the line H of Figure 1.

Similar characters of reference indicate corresponding parts throughout all figures of the drawings.

In these drawings, 1 designates a rod or shank, preferably of steel. and of circular section, which rod is flattened at the lower end thereof to form the blade portion or point 2 of the screw driver or other tool. The upper portion of said rod is inserted through the axial bore 4: formed in a handle 5, and has its upper end of slightly smaller diameter than said rod thereby forming a shoulder 6 and a projecting tang 3, against which shoulder bears a cap or washer 7, through which the tang 3 projects, the end Serial No. 545,689.

of the rod 1 being riveted over the cap, thus firmly holding the cap. in place on said rod. The upper end of the handle may be countersunk to receive the cap 7.

In the shank 1 at a point located, when assembled, within the lower end of the handle, are milled grooves 9, preferably two in number and arranged opposite each other, which grooves taper in depth towards the upper end of the shank. The portion 141 of the handle 5 adapted to receive the ferrule 11 is provided with a slit or slits 10 corresponding in position and number with the grooves 9. Metal pieces or wedges 8, 8, also preferably of steel, are inserted into the grooves 9. 9, formed in the rod 1, and the recesses 10 formed in the lower part of the handle. The ferrule 11, the bottom end 12 of which is of a substantial thickness in order to withstand any force which may be exerted thereon, and which has a cylindrical opening therein of such a diameter so as to snugly fit over the rod 1, is put on over'the rod 1 so that it embraces the wedges 8 and the upper end 13 fits over the lower end 14 of the handle so as to prevent the handle from splitting when the ferrule 11 is being driven over the, lower end of the handle as the tool is being assembled.

The ferrule 11 is driven over the end 14 of the handle, which forces the metal pieces upwardly along the grooves 9 of the rod. and biting into the wood of the handle, until the ferrule has reached its proper position. as shown in Figure 1. Thus the handle is firmly held upon the rod between the wedges held in place by the ferrule, and the cap riveted on the upper end; and the wedges effectively prevent the shank from turning in the handle due to the inward pressure of the wood of the handle on the upper ends of the wedges, forcing the lower ends outwardly and thus prevents the ferrule from becoming detached from the handle.

This arrangement, in addition to affording a secure fastening for the handle, serves the purpose, in' case the tool is struck with a hammer, of transmitting the bl ows di reotly to the blade or point of the tool so that the handle will not become split or damaged in any way.

I claim:

1. In a hand tool, a shank having grooves therein, a handle having an axial bore therethrough for the reception of said shank and having recesses at the lower thereof corresponding with said forced longitudinally-into the material of the handle for holding the shank in said 2 In a hand tool, a shank having grooves therein, a handle having an axial bore therethrough for the reception of said shank and having recesses at the lower end thereof cor responding with said grooves, and metal members driven in the grooves 0t theshanlt' and biting into the material oi the handle for holding the shank in said handle.

3. In a hand tool,- a shank having grooves herein, a handle having an bore therethrough for the reception of said shank and having recesses at the lower end thereof correspondingwith said grooves, wedges fitted,

in the grooves of the shank and projecti k lnto the material of the handle for holding, the shank, in said handle, and a cap disposed at the upper end of said handle to which the end of the shank is secured.

4. In a hand tool, a shank having grooves therein, a handle having anaxial here therethrough for the reception of said shankand having recesses at the lower end thereot cori responding wlthsald grooves, wedge mem bers disposed in said grooves, and a ferrule located on said shank adapted to embrace, said wedge memhersand to force them longitudinally into the handle to securely hold the shank ,in the handle. 1 g r 5. In a hand tool, a shank having grooves therein, a handle having an axial bore therethrough for the reception of, said shank and having recesses at the lower end thereof corresponding with said grooves,

handleengaging members located insaid grooves, and a" ferrulefldisposed on saidshank adapted to embrace said handle-en gaging members and force them 'longitudinally whereby thehandle-engaging members grooves, 4 and I wedges fitted 1n the grooves of the shank and idle.

ing in number and location with the grooves in the shank, acap secured to said tang, en-

gaging means inserted in the grooves in said shank and 1n the recesses of said handle,

and means adapted to embrace said engaging means and force them longitudinally to engage the handle to securely hold the shank in the handle; o i

7. In a hand tool, a shank having grooves therein, a wooden handle having an axial bore therethrough for the reception of said shank and having recesses atthe loweren'd thereof-corresponding with said. grooves, a

cap secured to the shank. at its upper end, said handle being countersunk'in the upper portion to receive said cap, wedges adapted to be placed in said grooves and in the recesses of thehandle, and a ferrule adapted to embrace SELIClWGdgGS and he forced over the end of said-handletodrive saidwedges along the grooves into the wood of the handle to securelyhold theshank in said han- 8. 1A hand tool comprising a shank having grooves therein tapering in depth towards the upper end of theshank, a handle having an axial here therethrough for the reception ofsaid shank and recesses at the lower end thereof, and-means located in said grooves and projecting into said recesses adapted to hold the shank securely in said handle, said means being forced by the shape of said assembling thetool. 1 I i In testimony whereof I have signed my name to this specification, i

I OSCAR D. HAPGOOD.

grooves into the material ofthe handle on

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