US1447620A - Tool holder - Google Patents

Description

' whereby great leverage may Patented Mar. 6, 1923.

its!) s'r WALTER E. LOMBARD, or ARLINGTON, MASSACHUSETTS.

TOOL HOLDER.

. Application filed September 17, 1921. Serial No. 501,406.

To all whom it may concern:

Be it known that I, lVAUrEnE. LOMBARD, a citizen of the United States of America, and 'a resident of Arlington, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Tool Holders, of which the following is a specification.

This invention relates to tool holders and has for its object the production of a device of this character which is adapted to securely hold a selected tool in position during its use. I

A further object is the provision of means be attained to rotate the tool about its axis.

The invention consists of a handle having an elongated rectangular socket at one end into which may be inserted the shank of a working tool the inner end of which is provided with shoulders adapted to be engaged by pivoted jaws within said handle. v The invention further consists in levers pivoted to the handle and adapted to be moved into position perpendicular to the axis thereof.

Theinvention further consists in means for retaining said levers under normal conditions in depressions in the side of the handle.

It further consists in certain novel features of construction and arrangement of parts which will be understood readily by reference to the description of the drawings and tothe claims to be hereinafter given. v

For the purpose of illustrating the invention, one preferred'form thereof is illus trated in the drawings, this form having been found .to give satisfactory and reliable results although it is toibe understood that the various instrumentalities of which the invention consists can be variously arranged and organized and the invention is not limited to the precise arrangementand organization of these instrumentalities as herein shown and described except as required by the scope of the appended claims.

Of the drawings: 1 j c Figure 1 represents a longitudinal section of a tool handle embodying the principles of thepresent invention; j v F igure 2 represents a transverse section on line 2, 2, on-FigJl.

Figure 3 represents a transverse section on line 3, 3, on Fig. 1.

Figure at represents a transverse section on line 4., 4;, on Fig. 1.

Figure 5 represents a transverse section on line 5, 5, on Fig. 1.

Figure 6 represents a transverse section on line 6, 6, on Fig. 1.

Flgure 7 represents a front elevation of a screw driver adapted to be used with the tool handle.

Figure 8 represents an edge same. 7

F lgure 9 represents a front elevation of a spanner wrench adapted to be used with said handle, and

Figure 10 represents a front elevation, partly in section, of a socket wrench adapted view of the to be used with the handle.

Similar characters indicate like parts throughout the several figures of the drawmgs.

In the drawings, 10 is a cylindrical member havlng a chamber 11 therein in which are positioned twopivoted gripping jaws 12 of Wl'llCh the fulcrum pin 18 extends through the cylindrical member 10' and is riveted thereto as indicated in Fig. 5.

These working jaws 12 have elongated extensions or arms 14 in the'upper ends of which are the inclined slots 15.

Through the inclined slots 15 extends a p1n 16 mounted in the slidable collar 17, the periphery of which is provided with a screw thread fitting and coacting with the helical thread of the rotatable nut 18.

One end of the nut 18 bears against a shoulder 19 on the cylindrical member 10 while the opposite end thereof bears against is adapted to receive the shank 27 of a working tool.

This working tool may be in the form ofa screw driver as indicated in Figs. 7 and 8 of the drawings, in the form of a spanner wrench as in Fig. 9 of the drawings, or a socket wrench as in Fig. of the drawings 1 or some other form of working tool may be used.

upon these gripping jaws 12 will be opposite to the depressions 28 in the shank 27.

By rotating the nut 18, the slid-able member 17 may be moved endwise in the direction of the arrow a on Fig.1 of the draw- .ings thereby causing the pin 16 to move lengthwise of the oppositely disposed slots 31 formed in the reduced shank 32 of the cylindrical member 10.

This-movement of the pm 16 acting upon the walls of the inclined slots 15will cause the gripping jaws 12 to be moved about the ivot 13 and the transverse projections 30 to enter the depr'essions28 in the shank 27 of the working tool beingnsed.

hen this operation has been performed, the working tool will be securely held in position inthe tool handle and its accidental displacement will be effectually prevented.

The upper end of the chamber 11 is preferably ddsed-bymeans of a plug 33 welded or otherwise secured therein.

The reduced extension 32 of the cylindrical member 10 is forkedand positioned within a socket inthe lower end of the body portion 22 as indicated in Fig. 1 of the drawings'and is secured rigidly in position by means of the fulcrum. pin 34 and a second pin 35 parallel to said fulcrum pin. On said fulcrum pin 34: are mounted two levers 36, the lower "end of each of which is provided with two ears 37 interlocking the ears 37 on the other lever as indicated in Fig. 3' ofthe drawings.

The body portion 22 of the tool handle is provided with oppositely disposed depressions 38 extending longitudinally thereof.

The long arms, of the levers 36 are under normal conditions positioned in these de-' pressions 38aswindicated in Fig. 1 of the drawings, while the ears 37 of said levers 36 are positioned-within a slot 39 extending transversely of the handle through the body portion 22 and the reduced extension, 32. H i

The cats 37; are provided with notches 40 which are adaptedto' straddle the second pin 35 when thelevers 36 have been moved about tl'lG'tXlS of the fulcrum pin 34: into a position perpendicular to the axisof the tool handle as indicated in dotted lines in Fig. 1.

The fulcrum pin 34' is provided with a threaded head 42 by which said pin may be secured in position in the body portion 22 of the tool handle.

Surrounding the pin 34 and bearing against the outer faces of the ears 37 are spring washers 43 which create sufiicient friction upon the ears 37 to retain the levers 36 in their adjusted position whether extending longitudinally of the axis of the handle or perpendicular thereto.

Surroundingthe pin 16 and between the outer walls of the extensions 1 and the opposite walls of the chamber 11, are preterably positioned washers 44c.

The tool handle is designed essentially for use of drivers of motor cars and is intended to be supplied with the necessary screw drivers and wrenches and other working tools to fit the various screws and'nuts upon the car. V

In many cases it would be difficult'to rotate a screw or nut by simply grasping the body portion of the handle. In such cases provision is made whereby additional leverage'may be secured. i

This is accomplished by the operator moving the levers 36'intothe. dotted positions shown in Fig. 1 ofthedrawings.

In some CtlSB'SJIl cramped quarters. a

single lever 36 may be used or both levers 7 may be used alternately under certain conditions.

It is believed that the operation and many advantages of theinventionwill be understood without further description.

Having thus described my invention, I claim:

1. In a'device ofthe class described, a handle having at one end an enclosed chamber terminating in an elongated socket adapted to receive the shankof a working tool; positively heldgrippin-g means wholly within the chamber of said handle for preventing displacement of said tool; and means surrounding said handle for adjusting said gripping means.

2. In a device, of the class described, a handle having at one end an enclosedchamber terminating in an elongated flat-sided socket adapted to receive the shank of a working tool; pivoted jaws wholly within the chamber of said handle adapted to grip the portion of said shank within said chamber and prevent its accidental removal; and means for positively holding said jaws in adjusted position. 1 j

- 3. In a device of the class described, a handle having at one end-an enclosed chamber termniating in an elongatedflat-sided socket adapted to receive the shank of a working tool; two members wholly within the chamber of said handle and pivoted thereto provided at one end with jaws adapted to grip the: portion of said shank within said chamber andfhaving inclined slots at their opposite ends; a slidable mem- -mounted in said member and ber within said handle having a pin extending through said inclined slots; and means on said handle for moving said slidable member.

4:. In a device of the class described, a handle having at one end an elongated flatsided socket adapted to receive the shank of a working tool; two members wholly within said handle and pivoted thereto provided at one end with jaws adapted to grip said shank and having inclined slots at their opposite ends; a threaded collar Within said handle having a pin extending through said inclined slots; and means onsaid hadle restrained from end movement and engaging the thread of said collar and adapted in its rotation to move said collar endwise. 5. In a device of the class described, a handle having at one end an enclosed chamber terminating in 'an elongated fiat-sided socketadapted to receive the shank of a working tool; and pivoted jaws wholly within the chamber of said'handle having transverse projections adapted to grip the portion of said shank within said chamber and prevents its accidental removal.

6. In a device of the class described, a

handle having at one end an enclosed chamber terminating in an elongated fiat-sided socket adapted to receive the shank of a working tool provided with opposed transverse depressions at the inner end thereof; and pivoted jaws wholly within said handle having transverse projections adapted to enter the depressions of said shank within said chamber and prevent its accidental removal.

7. In a device of the class described, a handle; a member one end of which is secured to said handle and provided with a chamber, and the other end of which is pro vided with a fiat-sided socket communicating with and in alinement with saidcham-v her; said socket being adapted to receive the shank of a working too-l; two shank-gripping jaws within said chamber; a pivot pin extending transversely thereof through both jaws; a slidable non-rotatable member surrounding said chambered member; means actuated thereby for moving said jaws about their pivot pin; and a rotatable member fixed as to end movement adapted in its rotation to move said slidable member endwise.

8. In a device of the class described, a handle; a member one end of which is secured to said handle and provided with a chamber, and the other end of which is provided with a fiat-sided socket communicating with and in alinement with said chamber; said socket being adapted to receive the shank of a working tool; two shank-gripping jaws within said chamber movable about a pivot pin extending transversely of said chamber through both jaws; a slidable non-rotatable member surrounding said chambered member; means actuated thereby for moving said jaws about their pivot pin; and a rotatable member fixed as to end movement adapted in its rotation to move said slidable member endwise.

9. In a device of the class described, a handle; a member one end of which is secured to said handle and provided with a chamber, and the other end of which is provided with a fiat-sided socket communicating with and in alinement with said chamber, said socket being adapted to receive the shank of a working tool; two shank-grip:

ping pivotally mounted jaws within said chamber, and each provided with an inclined face at its upper end; a slidable non-rotat able member surrounding said chambered member; means actuated thereby and coacting with each inclined face to move each jaw about its pivot; and a rotatable member fixed as to end movement adapted in its rotation to move said slidable member end- 10. In a device of the class described, a handle; a member one'end of which is secured to said handle and provided with a chamber, and the other end of which is provided with a fiat-sided socket communicating with and in alinement with said chamber, said socket being adapted to, receive the shank of a working tool; two shank-gripping jaws pivotally mounted within said chamber, and each provided with an inclined slot at its outer end; a slidable non-rotatable member surrounding said chambered member; a pin carried thereby and extending through said inclined slots to move said jaws about their pivot; and a rotatable member fixed as to end movement and threaded to said slidable member whereby in its rotation it is adapted to move endwise said slidable member and the pin carried thereby.

Signed at Boston, in the county of Suffolk, and Commonwealth of Massachusetts, this 16th day of September, 1921.

WALTER E. LOMBARD.

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