US1460036A - Screw driver - Google Patents

Description

June 26, 1923. 1,460,036

w. J. PARSONS S CREW DRI VER Filed June 28 1922 IIVIKEIVTOR 3% m ATTORNEYS Patented June Zti, i923.

uurran stares WILLIAM: J. PARSONS, OF MONTAGUE, IVTASSACHUSETTS, ASSIGNOR TO MILLERS FALLS COMPANY, OF'MILLERS -FALL$, MASSACHUSETTS, A CORPORATION OF IVIASSACHUSETTS,

SCREW DRIVER.

Application filed June 28, 1922. Serial No 571,360.

To all whom it may concern:

Be it known that 1, WILLIAM J. Pnnsons, a citizen of the llnited States, residing at Montague, in the county of Franklin and State of Massachusetts, have invented new and useful Improvements in Screw Drivers, of which the following is a specification.

This invention relates to atool comprising an elongated rod or shank having an acting portion, such as the, slot-engaging bit of a screw-driver at itsouteuend, and a handle rigidly secured to its inner end, whereby the shank may be manually rotated.

The'object of the invention is to provide simple and effective means for securing the handle to the shank, in such manner as to prevent the turning of the handle, on the shank, said means permitting theemployment of a shank which is cylindrical and of uniform diameter from end to end, and enabling the component partsto be quickly and conveniently assembled. and to be conveniently separated in case of breakage of the acting portion, and the necessity of dis carding the shank and substituting another therefor.

I attain the said objects by the improved construction hereinafter described and claimed.

f the accompanying drawings forming a part of this specification,-

Figure 1 is a side elevation of a tool embodying the invention, the acting end portion of the shank being broken away.

Figures 2 and 3 are side views of the head hereinafter described.

Figure 4 is a section on line 4-4: of Figure 2.

Figure 5 is a longitudinal section of the handle.

Figure 6 is a section on line 6-6 of Figure 5.

Figure 7 is a section on line 7--7 of Figure 1, the shank being shown in elevation.

Figure 8 is a view similar to Figure l, on a smaller scale, showing the acting portion or hit of the shank.

The same reference characters indicate the same parts in all of the figures.

In the drawings, 12 represents a cylindrical metal shank, having at its outer end an acting portion 13, such as the bit or screw slot-engaging portion of a screw-driver. 14: represents a cylindrical metal head, of larger diameter than the shank, and having in one end a socket 15, receiving the outer end of the shank, and at its opposite end an annular flange ldformed to bear on the outer end of the handle hereinafter described, The head is provided. between its ends With intermediate laterally projecting cars 17. Said ears are preferably integral with the head and formed by indenting the head at 18 to displace portions of the metal, the displaced portions forming the ears. The outer end of the shank is adapted to project from the outer end of the handle, to permit the attachment'of the head to the shank, when the head and the outer end of the shank are exposed outside the handle.

The outer end of the shank is secured to the head by suitable means, such as a pin l9 driven tightly into coinciding holes formed in the head and the shank. 20 represents a handle of wood, or other suitable material, having alongitudin al bore 21, receiving and closely fitting a portion of the shank 12, and enlarged at the outer end portion of the handle. to form a head-receiving socket 22, concentric with the main portion of the bore. The handle is provided with longitudinal slots 23 opening into the socket 22, and upon the outer end of the handle, and receiving the ears 17. The head is thus coupled to the outer end of the handle to prevent relative rotation of the handle and shank, the ears 17 and the sides of the slots 23 constituting complemental clutch parts which are interengagalole by an endwise movement of the head relative to the handle.

25 represents a ferrule, formed to closely embrace aportion of the shank 12, and to bear on one end of the handle, the ferrule being preferably formed to also embrace a reduced end portion 20 of the handle, as

shown by Figure 7. The ferrule is secured to the shank, and in this instance, to the portion 20 of the handle, by suitable means, such as a pin 26, driven tightly into coinciding holes formed for its reception. The handle and the shank are thus so connected that relative endwise movements are prevented. hen the handle is turned to rotate the shank, part by the engagement of the ears 17 with the handle slots, and in part by the engagement of the pin 26 with the ferrule, the handle, and the shank.

In assembling the parts, the shank-is first inserted in the handle until its inner end the turning strain is supported 1n projects from the bore enlargementsuiii- In case the bit-13 is broken,,the .pin 26 may be removed, and the parts separated by a reversal of the assembling operations, so that another shank may be installed in the manner described.

The pin 19 and the holes formed to .receive it, constitute attaching means, adapted to positively secure the head to the shank,

.While the head and the outer end of the shank are outside the handle, said attaching means being concealed when the head is inserted in the socket.

The ferrule 25, pin'26, and the holes formed to receive the pin, constitute attaching means adapted .to positively secure the inner end portion of the handle to the shank,

when the head is inserted in the socket.

I claim: I

1. A tool of the character stated, comprising, in combination, a handle, having a longitudinal central bore, enlarged at the outer.

end of the handle, to form a socket concentric With the main portion of the bore, a shank formed to fit and move endwise in the main portion of the bore, a head of greater diameter than, and concentric with, the shank, and having an annular flange, formed to bear on the outer end of the handle, said head being formed to be moved endwise into, and to fit the handle socket, and to engage the outer end portion of the shank, attaching means adapted to secure the head to the shank, When the outer end of the shank and the head are outside the handle, and attaching means adapted to secure the inner end portion of the shank to the handle, when the head is insertedin the handle socket,

to prevent relative endwise movement of the shank and handle, the head and handle being provided With complemental clutch parts, adapted to be interengaged by movement of the head into the socket, and to prevent rotation of the handle on the shank.

2. A. tool substantially as specified by claim 1, the said clutch parts-being embodied in laterally projecting ears on the head, and longitudinal slots in the handle opening into said. socket, and upon the outer end of the handle, the ears being movable into the slots by a longitudinal movement of the shank and head. I

In testimony whereof I have afiixed my signature. V

WILLIAM J. PAR-SONS.

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