US649902A

US649902A - Automatic lathe attachment.

Info

Publication number: US649902A
Application number: US72408999A
Authority: US
Inventors: John P Brophy
Original assignee: CLEVELAND MACHINE SCREW Co
Current assignee: CLEVELAND MACHINE SCREW Co
Priority date: 1899-07-17
Filing date: 1899-07-17
Publication date: 1900-05-22
Anticipated expiration: 1917-05-22

Description

Nu. 649,902. Patented May 22, I900.

J. P. BROPHY. AUTOMATIC LATHE ATTACHMENT.

(Application filed July 17, 1899.} (N 0 M o d 81.)

3 Sheets-Sheet m'zneslsas; 1720673201,

Tn: scams vzvzns co. wcruumo, WASNINGTDN, n. c

No. 649,9U2. Patented May 22, I900.

.1. P. BROPHY. AUTOMATIC LATHE-ATTACHMENT.

(Application filed July 17, 1899.)

(No Model.)

3 Sheets-Sheet 2 WL Z ILGSSBS, 172061211501:

THE Noflms vars-us co, m-mw-umo.v WAsHINGYCN. u. c,

No. 649,902. Patented May 2 2, I900.

J. P. BRUPHY.

AUTOMATIC LATHE ATTACHMENT.

(Application filed July 17, 1899.) (No Model.) 3 Sheets-Sheet 3.

3; II HI 1m 17a van/2'01;

RT Qrtrrrrn STATES PATENT OFFICE.

JOHN P. BROPIlY, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND MACHINE SCREV COMPANY, OF SAME PLACE.

AUTOMATIC LATHE ATTACHNI ENT.

SPECIFICATION forming part of Letters latent No. 649,902, dated May 22, 1900. Application filed July17, 1899. Serial No. 724,089. (No. model.)

To all whom it nmg cancer/1.:

3e it known that I, JOHN P. BROPH'Y, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Automatic Lathe Attachments, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention relates to attachments for automatic lathes for performing special operations upon the work in connection with other operations to be performed upon the same work by the different tools in the revolving turret before removing said work from the head-stock of the lathe; and it consists of means for counterboring wheels and other objects upon which it is required to perform such counterboring operation.

The annexed drawings and the following description set forth in detail certainmeclr anism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings, Figure I represents a front elevation of a portion of an automatic lathe to which my invention has been attached, showing a cross-section of a wheel in the act of being counterbored secured to the clutch in the head-stock of the latter, the tool-holder being shown in longitudinal crosssection on the cross-slide, showing the tool and other portions in elevation therein, together with other portions of the lathe shown. Fig. II represents a side elevation of the parts shown in Fig. I, illustrating the relation of the parts during the operation of the tool upon the work; and Fig. Ill represents a top plan of same, showing in dotted lines a retracted position of the turret.

The turret A is intermittently rotated and advanced toward the work held and rotated by suitable rotating blank-gripping means C by suitable mechanism in use in machines of this character and has secured in one of the tool-holding devices an angle-piece a, provided with an adjustable screw 0/. The axis of rotation of the turret is made parallel with that of the axis of rotation of the blank-gripping means and lies in different planes parallel with the direct-ion of reciprocation of the cross-slide. The cross-slide Bis also advanced toward the work by means of suitable mechanism. Formed upon said cross-slide isa toolholder B, having a longitudinal tool-seat I), in which slides the counterboringtool I). Said tool is provided with a pin 72 Fig. I, pro jecting downwardly through a slot 12 and which engages a plunger 0*, seated in a bore 6 drilled from the end of the tool-holder parallel with the tool-seat b. Intermediately of the inner end of the plunger and the inner end of the bore is a spring I), which tends to move the tool toward the turret, the move ment produced thereby being limited by means of a screw b projecting into a slot 11 formed in the lower portion of the plunger. Said slot b is of a length such that the cutting edge of the tool is caused to normally be located intermediately of the plane of that face of the work adjacent to the turret and the turret, as shown in Fig. I. The tool is thus enabled to pass and take up a position opposite its point of entrance into the work for the boring operation, as shown in Fig. I. The mechanism is so timed and arranged that when the cross-slide has reached the end of its inward stroke such position brings the tool opposite its point of entrance into the work. Thereupon the turret advances, after having been revolved to bring the end of the adjusting-screw a on the angle-piece into a position such that a line drawn through the center of said end and the center of the ad jacent tool end will be parallel with the line of reciprocating travel of the turret. The tool is thus engaged by said screw and fed into the work, thus performing the counterboring operation, upon completion of which the turret returns and permits the spring to retract the tool. The slide is thereupon withdrawn, as shown in Fig. III, carrying the tool without the path of other tools on the turret which might be required to operate in the same location.

By making the engaging piece a of angular construction it is seen that the time of reciprocation of the cross-slide may be altered without the necessity of changing the time of advance of the turret, and'by changing the angular position of the angle-piece its proper engagement with the cutting-tool still be obtained. This construction hence permits of a wider range of adj ustability of the attachment than would be obtained if the contactpiece were incapable of angular change and perfect engagement of the tool and anglepiece may always be had. The axes of the turret and gripping means being in different planes, as above described, such adjustment is made possible.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means covered by either of the following claims be employed.

I therefore particularly point out and distinotly claim as my invention 1. In an automatic lathe, the combination of rotatable blank-gripping means, a turret having its axis of rotation parallel with the axis of rotation of said gripping means, and a cutting-tool, said turret provided with an an gularly-ad j ustable contact-piece for engaging said tool whereby the latter may be advanced toward said gripping means, substantially as set forth.

2. In an automatic lathe, the combination of a rotatable turret, rotatable blank-gripping means,and a reciprocable cross-slide provided with a cutting-tool, the axes of rotation of the turret being parallel and located in different planes parallel with the direction of reciprocation of said slide, said turret provided with means for engaging said cutting-tool whereby the latter may be advanced toward said gripping means, substantially as set forth.

Signed by me this 5th day-of July, 1899. J. P. BROPHY. Attest:

D. T. DAvIEs, A. E. MERKEL.