US12742A - Slide-best fok lathes - Google Patents

Description

. Improved `SlidefRest for: Lathesfor Turning Iron;` and I1 do hereby declare that the following isa full, clear, "and exact description ofthe same, reference being had tothe l annexed drawings, making a part of this specification, in which- Figure l "s "a3 plan` or Figs. 2 and Byaretransverse vertical sections s if. `of the lathe"(`aa) (an) Fig. 1,.showing the I5 l ing the plane of` section of Fig. 3;

plane of section of Fig. 2 and (y) (y) show- .n Similarjletters ofreferjence indicate cori respondingpartsin the several `figures.

i .Thesnature ofvmy invention consistsfin` the peculiar constructionlofthe slide rest as i will be lhereafter ,shown-and described,

whereby the edge of thecuttingtool may be i elevated or depressed with the greatest facilityf and so fasto fbringthe edge of the cutting tool in fayprop erfrrelative position or gle with ,the article tobe turned..

To"""enable others fskilled in the, art to `lnalxe `and *use `my "finvention will"`proceed to describe lts construction and operation.

Arepresents the "cbed of an ordinary lathe n andB is a `carriage secured tothe bed so that itmay slide` thereon, the same as the carriage of the ordinary-i slide rest. i

g` -`C is a sliding `boxgwhich is `fitted into 'the carriage Bin dove tail manner so "that said "box may be moyedforward and backward @"1 .i on the carriageiB inflafline,transversely with y *the bed Aof thllthe. Thefsliding-box is to bej operated screwl in `the`- usual- "fmanner," Within `the sliding box C thereis placed smallshaftD having a screw E upon it,

` see Figs." lfand 3. "The screw El gears into a toothed `.wheel F which is placed within the box C. QThekwheel F gears intoa pinion `Gr also"withinftheboxC. `The screw E pinion G and shaft D are all secured to the bottom `oftheloox C' as clearly shown in Fig. 3

H is'ae ap pfale sliding bog c. To the `under surfaceof the top I-I there are secured arings (a) (a) which `aksmall shaft I s top view of a lathe` `with my improved slide rest applied to it.

` Norris, or PITTSEIELD, MnssimilUsnms;` y

SLIDE-REST ron LATHES.

i MSpecicationof Letters Patent No. 12,742, dated April 17,1855.

` lits, said shaft I also passing through the sides of the box Cand having a nut (b) at each end. The top Hconsequently fits between the two sides of the box and rests upon the shaft I, the bearings (a) (a) of which are attached to about the center of the under side of the top. To the under side of the top'I-I there are also securedby pivots (c) (a) which work in proper bearings (d) (d) two nuts V(J) (J) one at the front and the other` at the back end of the top H,`and within each nut a small screw rod K works. Each screw rod has a pinion L upon it, one of which gears into the toothed wheel F and the other into the pinion G.

At the outer end of the shaft D there is secured a small hand wheel M.

To the upper surface of the top I-I the `cutting tool is secured in the usual or any proper"manner. The lower ends of the `small screw rods K are properly stepped in the bottom of the box C, as shown in Fig. 3.

y `Operationz The carriage B `is moved longitudinally on the bed A by a screw shaft inthe usual way and the sliding box `C is `also moved in a line transversely with the y bed Aby a screw as in ordinary slide rests.

In order to raise or lower the cutting edge of the tool the hand wheel M is turned and the screw E rotates the wheel F which gives or` drawing it down. The cutting edge of the tool therefore may be raised or lowered as desired and brought to bear upon the work at the desired angle, see Fig. 3, in which the circle (a) represents the article to be turned and (b) the cutting tool.

The above invention is extremely simple, will not add materially to the expense of a lathe. l

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is,

Constructing the slide rest as herein shown," viz: having the top H of the sliding box C rest upon a shaft I and nolining or and presented in a proper position to the tiltilg said tlop by means if gie screw E, article to be turned. tootied Whee F pnions L, ,screw ro s K, K, and nuts J, J, substantially as herein OYRUS A' NOYES 5 shown, whereby the edge of the cutting tool l Witnesses:

which is secured on the upper surface of the JULIUS ROCKWELL, top H may be raised' or lowered as desired ARNOLD PALMER, J r.

Images