US85073A

US85073A - Improved chuck

Info

Publication number: US85073A
Authority: US
Publication date: 1868-12-22
Anticipated expiration: 1885-12-22

Description

and applied to'use a useful Improvement in Chucks for Alow cost, of a chuclesimple in its construction and and within the'frcnt section of the case, slotted to relposition, and an opening ismade in the sideof the case dnitml mes @www -ws sA MU'E L G.- DARE, or NE wv vonk, N. Y,

Letters Patent No. 85,073, dated December-22, 1858'.

The Schedule referred to in these Letters Patent and making part of the same. Q-wwf* To all whom it ma/y concern:

Be it known that I, SAMUEL G. DARE, of thc city, county, and State of New York, have invented, made,

lathes and other purposes; and I do declare the following to be a full, clear, and correct description of my invention, reference beingl had to thcaccompanyin'g drawings, makingr apart of this specification, and to the letters of Areference marked thereon, in which- Figure 1 is a rear view'of my improvedlchuck.

Figure 2 is a sectional view of the sa'me.

Figure 3 is a front view of the same. I

in the drawings, like parts ot' the invention are designated by the same letters of reference.

The natln'e oilmy invention consists in the construction and operation, as more fully hereinafter setforth, of a new and useful chuck for lathes and other purposes. j

-The object of the invention is the production, at a operation.

To enable those skilled in the arts to make and use my invention, I will describe its construction and operf ation.

A shows the case oi'my improved chuck, which, in order that access. may be had to the parts within the. same, may be` made of. two sections, united together by means of screws or in any convenient way.

Withiinthe back section of the'case is inserted a screw, B, havingl upon it a nut, O, provided with a latch,

ceive it, is a ring, D, slotted, as at d, to allow the latch upon the nut O to enter into the same. y

This ring `D is also slottedupon its face, to receive the latches upon the jaws E, and the front section of the case has out upon its face the radial slots, inwhich the jaws E move freely to andfro as they are operated,

more fully hereinafter described.

A cap or plateis secured upon the face of the front section of the ease,serving to retain the jaws, E in A, for the introduction of a socketfwrench or someA equivalent device, to operate the jaws E, as more fully hereinafter described.

Such being the construction, the' operation is as follows:

The chuck may be secured upon the spindle lath, in any convenient manner, the jaws E being drawn within tliecase A, as shown -in iig. 3'of the drawing. -When desired, to throw out these jaws, a socket wrench, or some equivalent device, is inserted within the opening in the side of the lcase A, so as to fit snugly the head ofthe screw B, upon which 'is the nut C, lockin g into the rin g D, supporting and governing the jaws E.

As the screw is turned by the wrench, the nut is advanced upon the same, and as it advances it causes theA ring to revolve, by which movement the jaws E ma be thrown out any desired distance from the positiont ey occupied within the case A.

A reverse movement of thescrew causes the nutto be drawn'back, and thefring following the nut ir its backward movement, the jaws maybe drawnback to their former position.

The jaws move, as it were, from their o'wn.. centres,' Y

and, although separate, move in harmony with each other, while they can, at any time, be instantly removed for repairing, or that their. placesmay be supplied .by

new ones.

The," construction of the chuck, as just described, I allows the use of a much 'larger central opening than in the ordinary chuck, while, at the same time, the smallest article to be turned can be readilyy held Within the saine.

My invention isalso applicable to the threading of gas-pipe and of bolts,iu which case the faces of the jaws'should be cut so as to effect the desired object.

'Having thus'fully described my invention, v l' I claim therein as new, and desire to secure by Letters Patent- The combination, with the case A and operating ring D of my improved chuck, of the semcircular 'or crescent-shaped jaws E E E, moving i counterpart recesses or -slots formed (about independent centres) in said case A, upon circles intersecting at the centre of the chuck, all substantially as herein set forth.

Witnesses: Y

J. G. GRANGER, A. SIDNEY DoANn.

of the l sAMUnL e. Dane.