US1412284A - Tool holder - Google Patents

Description

s'. J. HELLMANf TOOL HOLDER. APPLICATION FILED JAN-10,1921.

A TTORNEYS.

PATENT OFFICE.

SAMUEL JACK HELLMAN, OF LOS ANGELES, CALIFORNIA.

TOOL HOLDER.

Specification of Letters Patent.

Patented Apr. 11, 1922.

Application filed January 10, 1921. Serial No. 436,165.

T 0 all whom it may concern Be it known that I, SAMUEL JACK HELL- MAN, a citizen of the United States. residing at LosAngeles, in the county of Los Angeles and State of California, have invented a new and useful Tool Holder, of which the following is a specification.

This invention relates to tool holders and is more particularly directed to a tool holder especially adapted for manipulation in crowded spaces inaccessible to the standard types of tools.

The object of the invention to provide a tool holder adapted to receive the shank of a tool and having a universally connected operating handle for rotating the tool from various angles, and to provide a pressure member rotatably retained on the socket and having a connecting hand lever by which adequate pressure is applied to the socket to maintain the tool in engagement with the work.

Various other objects and advantages will be more fully apparent from the following description of the accompanying drawings which form a part of this disclosure. and which illustrate a preferred form of embodiment of the invention.

Of the drawings:

Figure 1 is a longitudinal section of the device.

Fig. 2 is an elevation showing the tool holder. in use as a screwdriver, and

Fig. 3 is a section on line m -na of Fig. 1.

In the drawings. 1 designates a tool socket having a central bore to receive the shank 2' of a tool, a set screw 3 being screv.*threaded in the outer end of the socket and engaging into a notch 4.- in the tool shank to maintain the tool in place. The upper end of the socket has opposed ears 5 to accommodate trunnion screws 6 which pivotally engage aball member 7 as an element of a universal connection. The companion member 8 or the universal connection has similar opposed ears 9 carrying trunnion screws 10 also pivotally engaging the ball member 7 at points at right angles from the screws 6. and the member 8 has an operating handle 11 se-v cured thereto. A rotatable pressure member or sleeve 12 is mounted on the socket l and is retained against endwise movement thereon by engagement with a shoulder 13 on the socket and by a collar 14 secured on the outer portion of the socket by a set screw 15. A hand lever 16 has a bifurcated inner end providing opposed limbs 1718 which proect on opposite sides of the pressure member 12 and are pivotally connected thereto by screws 19-20, the screw 19 being a shoulder screw permitting movement of the lever and the screw 20 being a winged screw by which the lever may be clamped to the sleeve 12 in any angular position.

In Figs. 1 and 2 I have shown the tool as being in the form of a screwdriver bit and in Fig. 1 I have indicated in dotted lines, a socket wrench tool. but it is obvious that there may be provided a wide range of various types of tools and bits without departing from the scope of the present invention.

In Fig. 2 I have shown the tool holder as used as a screwdriver and positioned to operate on a screw 25 which is positioned in a close corner where it cannot be reached with the ordinary form or" straight integral screwdriver. lVith the present device positioned as shown the tool socket is held in proper alignment with the screw 25 by he hand lever and the socket is rotated by the angularly positioned operating handle 11. If a stationary abutment, such-as a stud as at 26, is present said stud or projection may be engaged by the lever 16 and the lever used as a pry to force the tool against the work and it a convenient abutment is not present the hand lever 16 be clamped rigid to the sleeve 12 by tightening the wing screw 20 and the lever then used as a push rod or bar.

I claim:

A tool holder combining a tool socket, on operating handle universally connected to the socket, a pressure sleeve rotatable on the socket and retained against axial movement thereon, and a pressure lever having a forked end extending on opposite sides 01 the pressure sleeve and pivotally connected thereto, said lever having its connected end bent to permit the lever to be positioned parallel with the operating handle when axially aligned with the socket.

Signed at Los Angeles, California, this 31st day of December, 1920.

SAMUEL JACK HELLMAN. Witnesses:

CLARENCE B. FOSTER,

L. BELLE WEAVER.

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