US971556A

US971556A - Tool-holder.

Info

Publication number: US971556A
Application number: US56170210A
Authority: US
Inventors: William Andrew Petersen
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-05-16
Filing date: 1910-05-16
Publication date: 1910-10-04
Anticipated expiration: 1927-10-04

Description

W. A. PETERSEN.

TOOL HOLDER.

APPLICATION FILED MAY 16, 1910.

Wmm

Patented 0012.4, 1910.

p to raise the tail-end the nut washer will permit: 11, a screw WILLIAM ANDREW PETERSEN, OF MONTREAL, QUEBEC, CANADA.

TOOL-HOLDER.

To all whom it may concern:

Be it known that I, WILLIAM ANDREW PETERSEN, a citizen of Canada, residin at 1120 Des Erables avenue, Montreal, rovince of Quebec, (lanada, have invented certain new and useful lm rovements in Tool- Holders, of which the ollowing is a specification.

This invention relates to tool-holders ar' ranged to be operated by hand or pneumatically and designed principally for use on metal working lathes, and the invention will be readily understood from the following description taken in connection with the accompanying drawing in which Figure 1 is a plan of a tool-holder embodylng my-invention: Fig. 2 a rear elevation of the same: and Fig. 3 a vertical section in the plane of line a of Fig. 1.

In the drawing:-1, indicates the toolholding slide of a lathe or similar tool-carrying metal-working machine: 2, the toolseatformed thereon; 3, the tool restin on' the tool-seat; 4, the tool-clamp, in the form of a lever, disposed over the slide and having one end resting on the tool: 5, serrated inserts of hard steel in the lower face of the tool-engaging portion of the clamp: '6, a bolt projecting up from the slide, near the tool, and passing loosely through the clamp: 7, a nut on this bolt, above the clamp, the lower face of this nut being convex: 8, a washer disposed between the nut and the clamp and having a concave ufpper face engaged by the nut: 9, a pair 0 rockers pro- Jecting down from the washer and engaging the upper surface of the clamp, there being one of these rockers to the front and one to the rear of the bolt, the two being in one line parallel with the tool, and the lower face of the washer standing clear of the clamp, these rockers forming the fulcrum for the clamp:

10, a helical spring surrounding the bolt between the slide and the clamp and tending of the clamp as far as threaded down through the tail-end of the clamp, or the end farthest from the tool, the foot of this screw abutting 0n the slide, and the upper end of the screw being provided with a head for a wrench and also with a nurl 0 permit it to be turned by the fingers: 12, a step of hardened steel inserted in the slide at the foot of screw 11, the engagement of the screw and ste being of balljoint character: 13, a pair of rods projecting Specification of Letters Patent. Application filed May 16, 1910. Serial No. 581,702.

Patented ct. 4, 1910.

and journaled in the slide, the long and of the lever being centrally below the cylinder, and its cam-end being near screw 11 19, trunnions on the cam-end of the lever: 20, trunnion-bearings formed in the slide preferably by means of inserted steel blocks: 21, a cam formed on the outer end of the camlever and engaging under the clamp: 22, a steel insert in the clamp where it is engaged by the cam: 23, a link connecting the long end of the lever with the piston and passing loosely through a hole in the clamp: and 24, screws employed in securing the cylinder to the clamp.

In Fig. 3 assume, for the present, that screw 11 is absent from the devlce or that it is screwed up to inactive position. The tool is now seen to be clamped by the powerful action of piston 17 acting through the power multiplying devices represented by the camlever and the fulcrum clamp: In practice I secure, by these transmit-ting devices, a relation of thirty-two to one, that is to say, with a given total pressure on the piston thirt two times that pressure will be exerted in clamping the tool.

When the pressure is released from over the piston then springs 14 depress the tailend of the clamp, thus bringing about the elevation of the piston in the cylinder and the release of the tool, spring 10 keeping the clamp up against its fulcrum so that the clamp lifts away from the tool, leaving it free for removal. Owing to the very liberal movement which the device provides for the clamp it is not necessary to make any adjustments preliminary to the pneumatic clamping of the tool. When a tool is used having a shank materially different in size from one for which the device has been adjusted, then nut 7 will require to be adjusted to suit the new condition.

The cam can obviously be so shaped as to yield practically a uniform clamplng effect on the tool regardless of ordinary variations v the slide and clamp and tending to in the angular position of the cam lever. The cylinder can be made of an length desired and it is to be observed t at, by reason of its location upon the top of the clam it does not bring about any interfering si e projections of the device and does not'mterfere with the workmans view of the point of the tool. Furthermore, by reason 'of the cylinder bein carried by the clamp instead of by the sli e, the simple removal of nut 7 permits of the ready removal of the clamp with all of its accessories.

' If compressed air be not available then screw 11 can be brought into action, in an obvious manner, and without necessity for disconnecting any other parts.

I claim 1. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp en aging loosely over the bolt and having a short end to engage over the tool and a on end pro'ecting away from the bolt and too -'seat, a lcrum carried by the bolt and en a 'ng over the clamp, a spring upon the o t slide and clamp, a spring cooperating with ress the long end of the clamp toward the s ide, and mechanism for forcing the long end of the clamp in the direction away from the slide, combined substantially as set forth.

2. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp engaging loosely over the bolt and having a short end to engage over the tool and a lon end projecting away from the bolt and too seat, a fulcrum carried by the bolt and engaging over the clamp, means for vertically ad usting the fulcrum on the bolt, a spring upon the bolt between the slide and clamp, a sprin cooperating with the slide and clamp an tending to press the long end of the clamp toward the slide, and mechanism for forcing the long end of the clamp in the direction away from the slide, combined substantially as set forth.

3. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp en aging loosely over.

the bolt and havin a s ort end to engage over the tool and a on end projecting away from the bolt and too -seat, a collar carried loosely by the bolt above and free from the clamp, rockers projecting from the collar down into enga ement with the clam at points in line wit each other and para lel with the side of the tool-seat, an adjusting nut on the bolt over the collar, a s ring upon the bolt between the slide and 0 amp, a spring coiiperating with the slide and clamp and tending to press the long end of between the ing away the clamp toward the slide and mechanism for forcing the long end of the clamp in the direction away from the slide, combined substantially as set forth.

4. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat a clamp engaging loosely over the bolt and having a s ort end to engage over the tool and a lon end projecting away from the bolt and too -seat, a fulcrum carried by the bolt and engaging over the clamp, a spring upon the t between the slide and clamp, a spr' coo crating with ten the slide and clamp an to press the long end ofthe clamp towar the slide, a cylinder mounted upon the to of the clamp and provided with a flui inlet, a piston in the cylinder,'mechanism disposed between the slide and the long arm of the clamp to serve in forcing the long arm of the clam in the direction away 'from the slide, an a connection between the piston and said mechanism, combined substantially .as set forth.

5. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at ri ht angles to the side of the tool-seat, a c amp enga 'ng loosely over the bolt and having a s ort end to engage over the tool and a long end projectfrom the bolt and tool-seat, a fulcrum carried by the bolt and engaging over the clamp, a spring upon the bolt between the slide and clamp, a spring coiiperating with the slide and clamp and tending to press the long end of the clamp toward the slide, a cylinder mounted uplon the top of the clamp and provided wit a fluid inlet, a piston in the cylinder, a cam-lever trunnioned in the slide below the clamp and having its long end below said cylinder, 2. connection between said piston and the long end of the cam-lever, and a cam on the short end of the cam-lever and engaging under the long arm of the clamp near its end, combined substantially as set forth.

6. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp engaging loosely over the bolt and having a s ort end to engage over the tool and a lon end projecting away from the bolt and too -seat, a fulcrum carried by the bolt and enga g over the clamp, a spring upon the b0 t between the slide and clamp, a sprin cooperating with the slide and clamp an ten to press the long end of the clamp towar the slide, a cylinder mounted upon the to of the tool-seat, a cam-lever trunnioned in said trunnion-bearin s, a connection between said piston and the ong arm of the cam lever, and a cam on the short arm of the cam-lever and engagin upwardly against the clamp near the en of its longer arm, combined substantially as set forth.

7 A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp engaging loosely over the bolt and having a short end to engage over the tool and a long end projecting away from the bolt and tool-seat, a fulcrum carried by the bolt and engaging over the clamp,

v a spring upon the bolt between the slide and clamp, a spring cooperating with the slide and clamp and tending to press the long end of the clamp toward-the slide, a cylinder mounted uponthe top of the clamp and provided with a fluid inlet, a piston in the cylinder, a pair of open topped trunnion-bearings supported by the slide near the end of the long arm of the clamp and having their common axis parallel with the side of the tool-seat, a cam-lever trunnioned in said trunnion-bearin s, a connection between said piston and the ong arm of the cam lever, and a cam on the short arm of the cam-lever and engaging upwardly against the clamp near the end of its longer arm, combined substantially as set fortl.

8. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp e aging loosely over the bolt and having a s ort end to engage over the tool and a lon 'end pro 'ecting away from the bolt and too -seat, a 'ulcrum carried by the bolt and enga ing over the clamp, a s ring upon the b0 t between the slide and c amp, a spring cooperating with the slide and clamp and tending to ress the long end of the clam toward the sli e, pneumatic mechanism a apted to forcibly separate the longer arm of the clamp from the slide, and manual mechanism independent of the pneumatic mechanism for forcibly separating the longer arm of the clamp from the slide combined substantially as set forth.

9. A tool-holder comprising, a slide provided with a tool-seat, a bolt carried by the slide near and at right angles to the side of the tool-seat, a clamp engaging loosely over the bolt and having a short end to engage over the tool and a long end pro'ecting away from the bolt and tool-seat, a ulcrum carried by the bolt and engaging over the clamp, a spring upon the bolt between the slide and clamp, a spring cooperating with the slide and clamp and tending to press the long end of the clamp toward the slide, pneumatic mechanism adapted to forcibly separate the longer arm of the clamp from the slide, and a screw cooperating wit the clamp and slide and forming manual mechanism independent of the pneumatic mechanism for forcibly separating the lon er arm of the clamp from the slide, combine substantially as set forth. 10. In a tool-holder the combination of, a slide having a tool-seat, a clamp having a tool-engaging member disposed over the seat, a clamp fulcrum connected to the slide and en aging above the clamp, a spring compresse between the slide and clamp, a s ring urging the non-clam ing end of the 0 amp toward the slide, an means for forcing the non-clamping end of the clamp away from the slide to efl'ect the clamping of the tool.

WILLIAM ANDREW PETERSEN.

Witnesses:

J. HARGOURT W1LLIAMs, JOHN R. SAwrnn.