US1265815A - Turret tool-holder for lathes. - Google Patents

Description

Patented May14, 1918.'

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I I i UNlTED gTATES FREDERICK PRICE, OF STECHFOBD, BIRMINGHAM, ENGLAND, ASSIGNOR OF ONE-HALF T0 CHARLES BIRCH, 0F WALSALL, ENGLAND.

TURREI TOOL-HOLDER FOB LATHES.

Specification of Letters Patent.

Patented May 14:, 1918.

Application filed October 10, 1917. Serial No. 195,782.

To all whom it may concern:

Be it known that I, FnEnnRIcK PRICE, sub ject of the King of Great Britain, residing at Stechford, Birmingham, England, have invented new and useful Improvements in and Relating to Turret Tool-Holders for Lathes, of which the following is a specification.

The invention relates to turret mountings of the type in which the turret is permitted to move forwardly under the influence of a spring to clear a positioning device to permit the turret to be rotated to bring different tools into operation, the forward movement being limited by a control rod and regulating nut. In this invention a turret mounting is employed in which a horizontal holder or socket part receives a hollow spigot portion of the turret, and a spring between the holder and the turret urges the latter forward to clear a peg and hole or like positioning device between the two parts. The turret when thus projected forwardly may be rotated to bring the different tools carried by it into operative position. The endwise movement of the turret is controlled by means of a sliding rod with a removable washer at on end and a handle nut or the like at the other. The handle nut when unscrewed permits the spring to move the turret and when screwed up draws back the turret against the spring. By means of the removable washer the turret can be bodily removed in a very ready manner when desired to change a turret or for any other purpose.

In order that the invention may be thoroughly understood and easily carried into practical effect a sheet of drawings illustrating the same is-appended hereunto.

Figure 1 is an elevation of the turret and turret mounting.

Fig. 2 is a plan thereof.

Fig. 3 is a longitudinal sectional view.

Fig. i is an end view of the turret.

Fig. 5 shows the removable washer.

Figs. 6 and 7 are respectively end views and sections of a circular turret that may be employed.

The turret a is mounted in a holder 7) pivoted in any suitable manner on the cross slide 0. As shown the holder pivots on a central stud or pillar and is held down and secured in any adjusted position by means of the pins (Z which are secured in the slide and pass through segmental slots 6 in the holder and receive binding nuts 7 as clearly shown at Figs. 1 and 2.

The holder has a horizontal socket part 9 at its forward end opening into a larger chamber j, and a spigot part A: (Fig. 3), preferably tubular on the turret a, enters the socket g of the holder, while a shouldered part enters the larger chamber or recess Within the socket and spigot part a spring m is arranged tending to press the turret outwardly and the turret may be held against the action of this spring for the purpose hereinafter stated by a pin or peg passing through the wall of the socket and engaging a hole a of a series of holes or recesses in the spigot part is. In the larger chamber or recess y a hardened peg 0 may be driven or otherwise secured, adapted to engage one of a series of holes 39 in the face of the shouldered part Z of the turret a to position the same as any particular tool of those carried by the turret is required for operation. The number of holes in the said shouldered part will of course correspond with the number of tool faces. As will be seen the turret rotates in a vertical plane for bringing the successive tools into operation.

The turret a and holder are bored axially, see Fig. 3, and a rod 9 is arranged therein which is screwed at the tail and remote from the turret, and is operated by a handle nut r. The rotation of the rod 9 may be prevented by a feather key or by a set pin 8 through the holder ngaging a groove t in the rod. The forward end of the rod is necked down as at a and then provided with a head 2; and the latter may be engaged by a slotted washer to, see Fig. 5, assed over the neck and seating in a recess a; in the end of the turret.

A plain peg may be provided to engage the holes a of the spigot part is of the turret. Two pegs are preferably provided attached, for instance, by a chain or the like to the machine one of a length to pass through the hole g in the holder 6 and engage the holes of the s igot part is and the other, as shown at a being too short for this purpose, serves merely to plug the hole 'y and prevent swarf, dirt, and th like from entering. The short peg e as shown at Fig. 3 is in place during normal working.

If it is desired to bring another tool into operation, the handle nut r is slackened and holes which are arranged at an incline in the faces of the turret, substantially as described.

7. In a turret lathe, holder having a socket therein, a turret, a spigot part on said turret rotatable and slidably fitting Within the socket of the holder, a spring arranged between the turret and holder and acting to urge the turret from the holder, a rod passing throughsaid turret and holder, a removable Washer on said rod engaging the turret, an adjusting nut handle on the rod engaging the holder, said rod, Washer and nut handle serving to Copies of this patent may be obtained for five cents each, by addressing the in combination, a

draw the turret into the holder, a positioning pin in the holder engaged by one of a series of holes in the turret when the latter is drawn into the holder, and a peg in the holder adapted to enter one of a series of holes in the spigot part of the turret, substantially as and for the purpose described. In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

FREDERICK PRICE. Witnesses:

Aoons'rrrs E. INGRAM, R. D. NICHOLLS.

Commissioner of Patents,

Washington, D. G.

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