US1440672A - Tool holder - Google Patents

Description

Patented dan. Z? i923.

'i :an: A wat: n 1 fr?. i

kToon HOLDER.

Annerl-ritirare@ naar 1o, reale. sesam; regata To all whom t may condom.' y i Be it known that I, Ancien-''. Girssiin, citizen of the United States, residing at Y 'ungstowin in the [county of Mahoning and State of GhiO, havein'ventbd certain new and useful Improvements in Iool Holders, of which the following is a specification. l

This invention 'relates to tool holders especially adapted for use on lathes. l

in important object of this invention is to provide. a tool .lio'lder'ihaving' novel means whereby a cutter may be securely and positively held in position therebyforfproduca smooth and accurate out lin connection with the commutatorand other work.

A further object is to provide a tool holder of the class described which is of highly simplied construction, durable in use and cheap to manufacture.

Other objects and advantages of the invention will be apparenti during the course of the following description.

In the accompanying drawing forming a part of this application andin which like numerals are employed to designate like parts throughout the same,

Figure l is a perspective of the improved tool holder.

Figure 2 iS a longitudinal sectional view through the same.

Figure 3 is a fragmentary view illustrating the means for holding the adjusting worm against endwise movement.

In the drawing wherein for the purpose of illustration is shown a preferred embodiment of the invention the numeral 5 designates a bar bent -intermediate its ends as indicated at 6 to provide an attaching portion 7 adapted to be connected with the post 8 ofa lathe 9 of any desired type.

In carrying out the invention, the forward portion of the bar is provided with a head 10 having means whereby to securely and positively hold the cutter ll in position so that the forward end 11 of the same will be held in engagement with the work such as a commutator. By reason of the elongated formation of the cutter il the forward end ll of the same may be positioned within the commutator for accurately making the desired cut. The cutting lip ll at the forward end of the cutter is provided by extending the forward portion of the cutter angularly and beveling the "teds.- the worm isdesignated" the numeral ,19

end to' a point as-'illustrated in F igu'reA l.

, i The li'eady 10 is 'as illustrated ing is providedwith a centrally arranged opening through y a tubfu'lar worin 18 ex- Ihe opening. for the-recep'tionfof and thewallsv of the are provided A with* ppsitely' yarranged" recessesv 2O for 'the' reception of racks 22 of which there are2. With reference to Figure 2 it will be seen that when the worm is rotated in the proper direction, the racks 22 will loe moved into engagement with the tool and as .is well known a longitudinal strain on the racks 22 will not cause the worm lto rotate. It is thus seen that the tool holding means are self locking.

The worm 18 is held against endwise movement in one direction by a pair of oppositely arranged arcuate shoulders 26 formed at opposite sides of the opening 19. The worm is held against endwise move- LItwill be seen withI referenceto Figure 2v that 1the upper longitudinal edge' portioini of the biaru provided with a `groove 14 whichi's substantially V-shaped in cross sec- 't'ionfor providing av seat'for the. rear 'pfor-v vtion of the bar.

ment in they other direction by the vcover plate 2'( which may be secured to the overhanging portion of the head l0 by means of fastening devices 28.` The wormlS is provided with a rearwardly extending tubular portion 30 throughl which a'handle `32 is extended.

In positioning the toolthey same is placed upon the seat formed by the V-shaped. rgroove and the racks 22 are now advanced. for securely and `positively holding the tool in position. When desired, the vracks may be released from locking engagement with the tool by a rotation ofthe worm 18 in the.

proper direction.

The invention 1s especially adapted for use in connection with commutator and other work and by reason of the .formation of the tool it may be readily inserted into the commutator for making an annular or other desired cut.

I claim :-v

l. A tool holder comprising a bar, a head carried thereby and having an overhanging portion provided with an opening, the wall.

of which is provided with oppositely ar- 'ranged recesses, a Worin arranged in said opening,` and racks arranged in said recesses and engaged by said Worm, the Worm 'constitutingthe sole' meansy for actuating the racks and for locking the` saine in engagement With a tool.

2. A tool holder comprising a bar, a head carried thereby 'and having an overhanging portion provided With an opening, the Wall Vof which is provided- With oppositely ar,

ranged recesses, a Worm arranged'in said opening, and racks arranged in said recesses i :ing portion and limiting the endvvise mo-veand engaged bysaid Worm, the Worm constituting the sole means for actuating the ment of the Worml in the other direction. t a. A'tool holder comprising a bar having a tool supporting seat extendinglongitudinally thereof7 a head connected to one terminal portion of said bar and having an overhanging portion provided with an opening, a Worm arranged in said opening, said overhanging portion being provided With a pair ot arcuate inwardly extending shoulders limiting` the endwise movement of said Worm in one direction', racks carried by said overhanging portion and engaged by said Worm, a cover plate connected to said overhanging portion and limiting the yendwise movement of thev Worm in the other direction, a tool mounted on said seat and engaged by said racks, said Worm constituting the sole means oractuating said racks and for locking the same in engagement With said tool, the rear end of said Worm being extended exteriorly oi the head, anda handle connected to said rearwardly extending portion of the Worm.

In testimony whereof, I havel aiiixed my signature in the presence of tvvo Witnesses.

I ANTON A. GASSER. Witnessesz Y l/V. Gr.y DoRNAN, ALrRnDA PIFERJ

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