US104751A

US104751A - Improvement in lathes

Info

Publication number: US104751A
Authority: US
Publication date: 1870-06-28
Anticipated expiration: 1887-06-28

Description

4Toalljwhoia it may concern'.- 'Be' it known that I, FRANCIVS B.MAT'.rsoN,`of ltocklinois, havednvented anew :and useful Improvement marked thereon.

its construction and operation.

rA, in` which rests the uprightstandard C. i

` socket, anda-secured in auydesi'red position by means This shaft is enabled'to ymove freely through the FRANCIS B. MATTsoN,

Letters'Patent No. 104,751, dated June 28,1870. Y

IMPROVEMENT :NLM-ans.

Y The Schedule referred to in these Letters Patent land mala-.ing part of the same.

ford, in the county of Winnebago and State of Il-- in Back-Rest for Turning-Lathes; and I do hereby declarethat the following vis a full and exact description of the saine, reference being had to the accom panying drawing, and to the letters of reference This invention has for its object the production. of. an adjustable `rest for lathes, which shall be capable of supporting the work without undue fuction, and without injuring its surface, and to that end It consists principally in the employment of adjustablerollersupon a sliding shaft, in combination with a vertically-adjustable standard. The details of con# struction and' manner of operation will bei fullydescribed hereinafter;`

.Inthe drawingi Figure 1 represents a side elevation of lny improved rest; y

Figure 2, a sectional view; and

Figure v3, a plan view of the base.

To enable others skilled in the' art to make and use my invention, I will now proceed to fully `describe A represents a"slotted base, Which rests upon the lathe, and is secured theretoQin the usual manner;-

B represents a socket, rigidly secured to the, base A 'lhis standard may "be moved vertically in the otmthe set-screw b, upon the top of the standard C, -and at right angles to itis rigidly secured a socket, D,\in which is held the shaft E.

socket, and issecured in any Adesired position by the y thumb-screw d. 1 the front end `of the shaft E is attached the wings F, between which, at each eud,are!secured the rollers G G, as shown. i 1" ff represent additional `orifices for the bearings of the rollers,so that they may be adjusted nearer together or further apart, at will.

' AIhe'rear endof the shaft is attached to the lever H by means lof' a pin, which moves in a slotin theA lever, as shown in g. 1. .v

The lower end ofthis leveris rigidlysecured to the arm h, extending from -the socket B. Its upper end is provided with a suitable handle.

I represents a spring, located uponthe shaft E, he- .tweenthelever H and the socket D.

The operation is as follows: v

The tool itself' is adjusted upon the lathe, in any desired position,`by means of its slotted base, it being so located however, as to bring the rollers in rear. of the objectto be turned, usually at about its center. A 'space Von the stick, sufficient for the roller to j pass against, should Vloe .previously rounded ot. Therollers, having first been adjusted properly, relatively' to each other, should now be brought iutovcontact with the stick by operating the lever, and be secured lin place by mea-ns of the thumb-screw'. The position of the rollers, vertically, should be adjusted by movingthe standard G in its socket. p The rest, when accurately placed in position, will furnish a lrm and steady support to the stick to be turned, with but little if any friction, as the rollers revolve freely as the stick revolves, and also ,without mai-ring at all the surface of' the work. It is simple in construction and efticient in operation. Having thus fully described my invention, What I clainras new, and desire tosecure by Letters Patentjs` A1,. The arrangement of ..the rollers GG, shaft E,

and= standard C, when :constructed as shcwn and described, and for the'purpose specified.'

2. A back-rest for turning-'lathes composed of the slotted base-A, socket B, standard C, socket D, shaft E, wings' FF, adjustable rollers G G, lever H; and spring I, when combined, arranged, and operating as described, for the purpose set forth.

4This specification signed and witnessed this 2d day -ofv September, 1869.

FRANCIS B.l MATTSON. 'itnesses:

G. W. FORD, E. A. NICHOLS.

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