US2207359A - Toolholder - Google Patents

Description

July 9, 1940. T. s. SHAW 2,207,359

OOOOOOOOOO ER INVENTOR. Tryo/ms J. Sli/9W ATTORNEY..

Patented July 9, 1940 f TooLHoLDER Thomas S. Shaw, Detroit, Mich., assigner to Wilfrid G. Torrance, Detroit, Mich.

Application February 28, 1938, Serial No. 193,043

2 Claims. (Cl. 279-87) and quickly removed and replaced when desired. The tool adapted to be secured by the retainer Itis an object of the present invention to prois provided with a shank 26 having a longituvide a toolholder of this class which will be simple dinally directed peripheral groove 21 formed in structure, economical of manufacture, durable, therein and in which the edge of the locking compact and free from any resilient or springplate 2U is adapted to engage. This plateZIl is like parts. of such width that when positioned in the slot I8 It is another object of the invention to provide with its outer end substantially flush with the a iOOlhOldeI having a SllI-lClle Wheleby the tool outer face 28 of the retainer 9, the locking plate may be positively locked in position. and pre- 20 will clear the bore or passage I1. When the vented from dislodgement from the holder. tool shank 26 is positioned in the passage or bore Another object of the invention is the provision I1, the inner end thereof will engage against the of a toolholder of this class having a plurality of face of the abutment plate I6 and when the axially directed parallel extending passages in shank 26 is rotated so that the groove 21 registers which cooperating parts are positioned. with the slot I8, a threading inwardly of the Other objects will appear hereinafter. screw head 24 will force the locking plate 20 in- 'Ihe invention consists in the combination and wardly and as it moves inwardly of the slot I8,

arrangement 0f parts hereinafter described and toward the abutment plate I6,it will move radialclaimed. ly of the tool shank 26 and engage in the groove The invention will be best understood by a 2'I and serve to cla-mp the tool shank 26 in the reference to the accompanying drawing which bore I1 and force it tightly against the face of forms apart of this specication and in which: the abutment plate I6. This is due to the fact Fig. 1 is a central, vertical, sectional view of that the .groove 2l has aninclinedterminalportion the invention. 29 clearly illustrated in Fig. 1. Consequently by Fig. 2 is a sectional view taken on line 2--2 threading the screw head 24 inwardly and forcof Fig. 1. ing the locking plate 2U inwardly, the tool shank Fig. 3 is a sectional View taken on line 3 3 not only is locked against undue removal from of Fig. 1. the retainer 9 but is forced securely against the In the drawing I have illustrated the invention abutment plate I6 so that a positive look is thus adapted for use in retaining a punch in position. provided which will prevent any looseness of FIOm the deSCTipi'fiOn, hOWeVeI', il? Will be OlOVOILS the associated parts or any play of the same while that it is equally well adapted for retaining a die in use,

or other similar tool in a holder. The invention When it is desired to remove the tool from the COmDIiSeS a retaining blOCk 9 Which iS Secured retainer 9, it is but necessary to thread the screw by SCI'eWS l0 01 in any Other Suitable manner t0 head outwardly permitting the plate to move a punch plate DIOJ'eCiYlg outwardly from outwardly of its slot I9 until it has disengaged which are doWelS l2 Which engage I1 lOO-CketS i3 from the groove in the shank 26 whereupon the formed in the face I4 of the retalner 9- The shank 26 may be removed by hand. It is obvious central portlon'of theretainer 1s recessed as at that when the shank 25 is in the depending M 5 and pressed mto-thls recess 1s 9 hardened am? lation to the retainer 9, it will drop out of the ground plate .I6 Whlch Serves as an abutmnt for passage or bore I'I when the locking plate 2l] is the m91 reta'mer-by the holder'. Forme een' moved to inoperative position. It will be noted trally 1n the retainer or block 9 1s a passage I1 1 th t th t b1 d th 1 k which terminates at the inner face of the abutaso a O nce e par s are asse@ e e OC ment plate la Extending through the retainer ing plate 1s not removed from its slot 1n order 9 and terminating at the ab-utment plate I6 is a to remove the 3001 Shanli from the passage I1 as comparatively narrow slot I8 having the inclined the s CreW 23 1S 0f Sucent length l30 Permll? Phe wall I9. This slot I8 opens throughout its length baeklng OlllJWaI'dlY 0f the plate 2li t0 IeleaSlIlg into the passage or bore l1. sudeamy positioned or inoperative position without permitting the in the slot I8 is a locking plate 26 which is also plate 20 to become disengaged from the slot I8. provided with an inclined edge 2|. Threaded The width of the plate 20 is of such dimensions, into the threaded socket 22 formed in the rerelatively to the diameter of the passage II, that My invention relates to a new and useful improvement in a toolholder adapted especially for holding a punch, a die or the like so that the same may be readily mounted in position and easily tainer 9 is the screw 23 having a head 2li which is adapted to overlie the slot I8. -This head 2li being positioned in a recess 25 formed in the retainer 9.

it cannot become dislodged from the slot I8 by tilting over into the passage or bore l1.

In this manner, I have provided a simple, economically manufactured and durable retainer of the releasable type in which the use of springs or other resilient or yieldable means is entirely eliminated and in which a positive locking of the tool in the holder is effected.

While I have illustrated and described the preferred form of construction, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modiiications as may come within the scope of the appended claims.

What I claim as new is:

1. A toolholder of the class described, coinprising: a retainer having a tool receiving passage formed therein adapted for the reception of a tool shank; a tool shank inserted in said passage and having an axially extending peripheral groove formed therein diminishing in depth proceeding toward the end of said tool shank, said retainer having a second passage formed therein extending inwardly from one end thereof and axially of said rst named passage and opening at one side thereinto and having an inclined surface at the opposite side; a wedge-shaped locke ing plate slideably mounted in said second passage through its open end and adapted upon inward movement therein for projecting at one side into said tool receiving passage and engaging in the groove in the tool shank therein;

and means engageable with said locking plate for forcing the same inwardly of said second named passage, the inward movement of said locking plate forcing said tool shank inwardly of said first named passage and clamping said tool shank against removal therefrom.

2. A toolholder of the class described, comprising: a retainer having a tool receiving passage formed therein adapted for the reception of a tool shank; a tool shank positioned in said passage and having a peripheral axially directed groove formed therein diminishing in depth toward the end thereof, said retainer having a seoond passage therein extending inwardly from one end thereof and axially of said first named passage and opening at one side thereinto and having an inclined surface at the opposite side; a wedge-shaped locking plate slideably mounted in said passage and adapted upon inward movement thereof for projecting at one side into said tool receiving passage and engaging in the groove in the tool shank therein for forcing said tool shank inwardly of said rst named passage and clamping the same therein, said shank engaging side of said plate and the opposite side of said plate being inclined to the axis of said plate and converging toward the inner end of said plate; and threaded means on said retainer adapted upon threading for forcing said locking plate in- Wardly of said second named passage.

THOMAS s. SHAW.4

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