US2480885A - Work holding device - Google Patents

Description

Sept. 6, 1949. Y R. P. SEDLOCK 2,480,885

WORK HOLDING DEVICE Filed March 12, 1946 I 2 Sheets-Sheet 1 FIQ INVEN TOR. FEE/BERT H 5512mm:

AT TUE'NEY P 6, 19489. 4 v v R. P. SEDLOCK 2,480,885

WORK HOLDING DEVICE Filed March 12, 1946 2 Sheets-Sheet 2 (Y, 7 \l 9 N INVENTOR.

Robert Sad/oak Affomey Patented Sept. 6, 1949 UNITED WORK HOLDING DEVICE Robert P. Sedlock, San Diego, Calif. I

g I Application March 12, 1946, Serial No. 653,918 i 4 Claims. (01. 7763)' (Granted under the act of March'3, 1883," as' amended April 30,1928; 370 0. G.'757) This invention relates to work holding devices, and more particularly to fixtures for l'ic'ildingwork in adjusted positions.

An object of the invention is'to provide improved means for holding work in adjusted positions relative to a drill 'orother machine tool.

Other objects of the invention' are to provide an improved adjustable Work holding device adapted to be used in connection with a drill press or similar apparatus and of such construction as to facilitate movement of the work relative to the apparatus; to provide an improved apparatus ofthe character described which is useful in holding a plurality of work pieces; and topnovide improved elements and arrangements thereof in a device of thecharacter described and for the purposes set forth. V

In accom'plishingthese and other objects of the present invention, I have 'provided'improved detailsof structure, the preferred form of which is illustrated in the accompanying drawing, whereinz'. h I i Fig. lris a'plan view of a work holding" device embodyin the features of the present invention.

Fig. 2 an end elevational view of the device taken on the line 2-'-2"of Fig.1',"sh'owing the relation of the same to a drill press.

Fig. 3 is a transverse, sectional view, taken on the line 33 of Fig. 1.

Fig. 4 is a transverse, sectional view, taken on the line 4-4 of Fig. 1.

Fig. 5 is a front view of a bank of drill presses, showing the instant invention applied thereto.

Referring more in detail to the drawing:

In Fig. 2, the numeral designates a drill press which is mounted on a horizontal supporting surface or table l. The press I0 is normally one of a battery of drill presses (Fig. disposed in aligned relation to each other. An angular bracket I2 is secured to the base |3 of each end or outermost drill press and has an upstanding arm portion 4, which is provided with a longitudinal opening or slot l5. Adjustably mounted between a pair of the brackets I2 is a guide member in the form of a cylindrical rod bar |6 having threaded end portions (Fig. 1). The bar It is of sufficient length to permit the threaded ends thereof to extend through the slots I5 of the bracket arms I4 and receive cooperating or companion pairs of nuts I8 and I9, each pair of nuts clamping one of said arms therebetween. The bar is normally disposed in parallel, spaced relation to the table H, and is positioned between the base portion of the drill press and its drill bit 20.

Slidably and pivotally mounted on the bar I6 are a plurality of extensible or telescoping arms or elements 2| disposed in perpendicular relation to said bar, A block or carriage 22 is welded, or otherwise secured, to the inner end of eacharm 2| and'hasfl'a longitudinal bore" 23 (Fig. 3) for slidably engaging" upon the bar The block 22 has a plurality of radially-disposed Wheels or rollers 24, preferably rotatably mounted upon pins 25, which are'adapted to ride upon the surface of the bar so as to facilitate movement of said block and the 'arm longitudinally of said bar.

The arm2| preferably includes :an inner member or section '26 which'is connected to the block and which telescopes orslidably engages within an outer hollow sectionor sleeve2'l. An elon-' gated opening or slot 28 is formedin the inner portionof the sleeve 21 for receiving a radial pin or headless screw; 29 carried by the'inner member 26 so as to prevent relative rotation of said memberr and removal thereof. Y

Slidably mountedupon the sleeve 21' are a pair of clamping members or brackets 30, each of which includes a collar 3| and a vertical clamp plate or work engaging element '32. The latter rests upon the table II so as to extend-perpen- Operation The operation of a work holding device constructed as described is as follows:

When it is desired to employ one or more of a battery of drill presses l0 (Fig. 5) on one or more pieces of work, the described device is adjusted so as to position each work piece below one of said drill presses. The bar I6 is fastened in spaced relation to the table by moving the ends H of the same vertically Within the slots l5 of the brackets l2. Each block 22 is then slid along the bar so as to cause the arm 2|, connected to the block, to travel longitudinally of said bar and locate its clamping brackets 30 in the desired relative position beneath one of the drills 20. The plates 32 of each pair of clamping brackets are moved longitudinally of their arm and relative to each other so as to clamp the work piece therebetween. Tightening of the thumb screws .33 fastens the bracket plates in clamping position upon the arm. Due to the provision of the telescoping sections 26 and 21 of the arm, the position of the Work piece may be varied transversely of the table so as to move the same inwardly or outwardly of the drill. As has been explained, the sliding engagement of the block 22 upon the r 6 p rmi s movemen of e work piece l n itudinally of the table by manual movement of the arm 2|. Thus, universal adjustment of the Work piece relative to the drill is permitted without disconnection of said work piece,

While I have shown but one embodiment of my invention, it is susceptible to modification without departing from the spirit of the invention. I do not wish, therefore, to be limited by the disclosures set forth, but only by the scope of the appended claims.

The invention described her in may be maxim factured and used by or for the Government of the United States of America for governmental purposes without the payment of any r yalties thereon or therefor.

I claim: 7

1. In a device of the character described, a uppo sp n of spaced brackets mounted on said support, a cylindrical bar a iustably mounted between sa d. brackets in a substantially horizontal plan a arriage slidably mounted on t e bar, an extensible arm having a hollow outer section nd an. inner sectionre eivab e there n, the am being dis osed in perpendicular relation to said ar and having its inner section connected to the ca ria e, a pair or sellers adlustably mounted on said arm, and a clamping pla e secur d to each collar and ispo ed in parallel relation to said bar,

h plates coacting with each other o clamp work therebetween.

2. In a device f he character described, a uppor a bar mounted in a horizontal plane above the support, a. carriageslidably mounted on the bar, an a m connected to the car i g D8 p ndicular to said bar, a pai of collars adj stably mounted on the arm, and work engagin elements connected o each collar perpendic lar to said a m- .3. A work ho der for a drill press hav ng a supporting surface beneath the press, comprising a rod, means for mounting said rod parallel to said surface and spaced thereabove, a carriage movably secured to said rod, an elongate handle mounted to said carriage longitudinally adjustable with respect thereto, and a pair of work clamping members having flat bottom edges dapted to r st on said surface While clampin work therebetween, said members being adjustably mounted on said handle and disposed to extend horizontally and transversely from one side of said handle.

4. Work holding apparatus for a drill press having a support surface therebeneath, comprising a rod, means for mounting said rod parallel to and spaced above said surface, a carriage mounted on said rod for movement therealong, an arm secured to said carriage and extending transversely therefrom above said surface, a sleeve telescoped over said am} forming a handle exension hereof, and a pair of platedike work holding members moun ed on said sleeve extending transversely from one side of said sleeve substantially parallel to said rod, said members hoving straight bottom edges and forming legs adapted to rest on said surface while clampin work therebetween.

' ROBERT .P. 'SEDLOCK.

REFERENCES orrun The following references are of record in the file of this patent:

UNITED STATES PATENTS

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