US937886A

US937886A - Lathe-tool.

Info

Publication number: US937886A
Application number: US49136509A
Authority: US
Inventors: Andrew Stevenson
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-04-21
Filing date: 1909-04-21
Publication date: 1909-10-26
Anticipated expiration: 1926-10-26

Description

A. STEVENSON.

LATHIl TOOL.

APBLICATION FILBDAPR. 21, 1909.

Patent-,ed 0611.26, 1909.

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LATHE TOOL.

M APPLIOATION FILED APB. l21, 1909.

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937,886. Patented 0016.26, 1909.

V M JWM /Mww- @MMM/W ANDREW sTEvENsoN, oE SEATTLE, wnsiiIN'eToN.

LATHE-TOOL.

Specicaton of Letters Patent.

Patented Oct. 26, 1909.

Application led April 21, 1909. Serial No. 491,365.

To all whom ,it may concern.'

Be it known that I, ANDREW S'rEvENsoN, citizen of the UnitedA States, residing at Seattle, in the county of King and State of lVashington, have invented new and useful Improvements in Lathe-Tools, of which the following is a specication.

My present invention has to do with lathe tools; and it contemplates the provision of what may be properly denominated a combined lathe tool and follower rest, embodying such a construction that it is calculated to retain its own work without the use of a dead center, to any size and length, and with the use of a certain kind of bushing is adapted to be employed to advantage for duplicate or any irregular work.

With the foregoing in mind, the invention will be fully understood from the following description and claims, when the same are read in connection with the drawings, accompanying and forming part of this specication, in which:

Figure 1 is an elevation showing one side of a tool and follower rest constructed in accordance with my inventio-n. Fig. 2 is an elevation showing the opposite side of the same. Fig. 3 is a view taken at right angles to Figs. 1 and 2. Fig. 4 is a transverse section taken in the plane indicated by the line 4--1 of Fig. 3. Fig. 5 is a longitudinal central section, taken in the plane of the line 5-5 of Fig. 1. Fig. 6 is a view showing in elevation the opposite side of the tool body per se with reference to that shown in Fig. l. Fig. 7 is a view of the interchangeable bushing. Figs. 8 to 12 are elevations of irregular forms for which the tool may be used when the alternate bushing, Fig. 7 is employed.

Referring by letter to the said drawings and more particularly to Figs. 1 to 5, thereof: A is the body or major portion of the tool, which is preferably in one piece of steel. The said body is provided adjacent its forward end with a through and through transverse aperture a with which communicates a threaded bore b, disposed at a right angle to the aperture, and designed to receive a set screw c. The body A is also provided in one side with a longitudinal groove Z which extends from the aperture a to the rear end of the body and has undercut side walls e. At its rear end the body has a longitudinalcentral, smooth-bore aperture f, in advance of which is a threaded bore g which communicates at its forward end with a chamber h, having a seat i in its forward end wall. The transverse aperture a in body A 1s designed to receive a bushing B, flanged at y to engage one side of the body and designed to be detachably fixed in the body through the medium of the set screw c. It will be manifest from this that when desired the bushing B2, Fig. 7, may be expeditiously and easily substituted for the bushing B, and I would have it understood that when the said bushing B2 is employed the tool can be used to advantage for duplicate or any irregular Work Isuch as shown in Figs. 8 to 12.

C is the rectilinearly movable slide of the tool.

This slide has itsl edges beveled invv conformity to the undercut walls of the Y body grooveV al in which it is movable fore 'and aft, and is provided on the outer side of its forward portion with an enlargement m in which is a longitudinally-disposed, cutter-receiving socket a, preferably of angular form in cross-section, and a threaded bore p which communicates with said socket and is designed to receive a set screw D for detachably xing a suitable cutter E in the socket n. At its inner side and adjacent its rear end the slide C is provided with a lateral projection 7' in which is a longitudinally-disposed aperture s.

F is the screw for adjusting and adjustably xing the slide and consequently positioning the cutter E, relative to the center of the bushing B. The said screw F is journaled in the aperture s of projection r and is held against endwise movement with respect to the slide C, by the enlargement t disposed in front of the projection r, and the finger-piece a, disposed in rear of the proj ection 1" and held on the screw shank and in engagement with a key thereof by a nut o.

It will be manifest from the foregoing that when the screw F is turned in one direction through the threaded bore g in the body A, the slide C and the parts carried thereby will be moved forwardly, while when the screw F is turned in the opposite direction through bore g, the slide and the parts thereon will be retracted. It will also be manifest that when the slide C reaches the extremity of its forward adjustment, the forward end of the screw will bring up in the seat z', and the lateral projection 1" on the slide will occupy the aperture f in the rearend of the body.

It will be gathered from the foregoing n claim and desire to secureV by Letters-Patthat my improved device is simple and compact in construction andV is susceptible of quick and easy adjustment; also, that the parts that are adjustable are supported and reinforced by the body'A. Y

rlhe construction herein illustrated and described constitutes the besty practical embodiment of my invention of which I am cognizant, but 1t is obvious that inthe future practice of the invention such changes in the form, construction and relative arrangement of parts may be made as do not involve departure from the scope of my invention as defined in the claims appended.

Having described my invention, what I ent, is:

1. A lathe tool comprising a body having a longitudinal groove extending from its rear end forwardly, a longitudinal threaded bore parallel with the groove, a seat disposed in front of the bore and a smooth aperture disposed in rear of the bore, a slide movable rectilinearly in the groove of the body and adapted to receive and carry a cutter, a lateral projection having an aperture on the inner side of the rear portion of the slide,

andV a screw journaled inthe aperture of said projection vand held against endvvise movement with respect thereto.V and pro.-

vided in rear of the projection with a finj ger-piece and having its forward portion ena portion of the body at the extremity of the forward adjustment of the slide.

In testimony whereof I have'hereunto setv my hand in presence of two subscribing witnesses. j j Y `ANDREW STEVENSON.

Witnesses:

M, B. SACHS, JAS. N. SOMMER.

ly fix the slide with'- respect to the body; the forward end of the said screw being adapted to bring up against