US8196A - Lathe - Google Patents

Description

i UNITED sTATEs .PATENT oEErcE.

t .T. n. BAILEY, oE LocKPoET, NEW YORK.

.LATHE i ."Speccation of Letters Patent No. 8,196, dated `July 1, 185i;

T all whom t may concern.' 1

Be itknownthat I, T. It. BAILEY, of Lockport,` in the county of Niagara and State of New York, have invented certain new and useful Improvements in a Turning- Lathe; andl do hereby declare that the fol-t` lowing is a tulhclear, and exact description of the same, reference beinghad to the accompanying drawings, forming part of this specification, in which- Figure 1, is `an isometrical view of the lathe. Fig. 2, is a `front View of the contrivance for bringing up and throwing back the `puppet center. t Fig.` 3, issectionfshowing the centering apparatus.

Similar letters of reference, indicate cor responding parts in each of the severalfiigures. l

My improvements relate, First, to certain devices, by the aid of which, sticks, rods,`

or any pieces of material can be inserted between the centers for turningso as to bring them `at once in the center of motion, with` out the trouble uncertainty of what is com- .25 monly called centering by the eye. Thesel devices consist in two mouth pieces theinsides of which are of conical or `cup shape placed concentric tothe line of motion; one attached `to the mandrel `head by means of rods` ,parallel `with -`the mandrel, sliding through guides on the head, and having a weight or spring applied to it in such a manner as to impel it forward beyond the mandrel, being provided with a hole through which the mandrel passes, when it, the cone, is pushed back; and the other attached to the front ofra sliding cutter block, and having a hole through which the back or puppet center passes. Second, to a contrivance for throwing back the puppet center at the instant the stick or piece of material has been turned along the whole length. This contrivance consists, in connecting the puppet center by a lever, with a sliding `bar onl which there is a ratchet into which takes a pawl or catch attached to the bed or frame.

When the `center is moved up to the work it is kept in place by the ratchet and catch, the catch projects abovethebed so that it is struck by the cutter head when it reaches its most forward position, andreleased from the ratchet, when the sliding bar in connection with the center is immediately carried back by a weight or spring, removing the center from the work, and leaving t-he work `free to drop from the lathe. Thirdly, to a contrivance for throwing the work out of the `lathe after the puppet center is removed, consisting in a spring arm, in connection with which isa lever, `which is struck by the cutter head atthe Sametime as the center is withdrawn, and caused to throw down the spring arm `upon the work and throw it out ofthe lathe. t j t, t

To enable others skilled in the art to'make and 'use my invention, I will proceed to de scribe its construction and operation. l A, is the bed Hof 'the lathe. B, B, are the sides. t C, fis themandrelfhead; cthemandrel. `J\D,"is one of" the mouth pieces, the interior of'which is Tof conical form, ithas two ears cl, ci, lonegon eachside, to each of these is attached a rod E, passingthrough guides e, e, on the mandrel head. The two rods are connected at thebacjk "of the .mandrel head. F,`is a cord attached to the rod E, atthe back ot the mandrel head, it passes overa pulley G, supported by the bed, and has a` weight H, suspended at its end, which has a tendency to pull forward the mouth piece D.

l, is the cutterLhead, which is intended to be moved by hand or otherwise along the sides B,"B, on which it rests. At its front is the other mouth piece D1, which is cast on it, or otherwise secured to it, in a position concentric to theline of motion. The cutter g head itself and the cutters may be of any suitable form, but as they form no part of my improvements, need no particular de# script-ion. K, is the puppet head. L, its movable center.

M, isa lever whose tulcrum is in a link m, attached to the back of the puppet head; it is connected by a pin at Z,a short distance from its` :Fulcrum with the puppet center L.`

N, is the sliding bar sliding along the Vtront of the bed between a stationary rib O,

and two guide pieces P, P; it is connected by a rod 1t, to the end of the lever Q, isa lever having its fulcrum at g in a `bar R1, attached to one of the holding down bars R, of thepuppet head; it is connected by a rod S, to the sliding bar N. i T, is a ratchet,`secured to the `inner face of the sliding bar N.

t, is a catch, hung on a pin u, in a recess in the face of the stationary bar O, its point takes into the ratchet T; attached to it there is anarm o, whose end stands up above the 110 bar O. t

U, is a cord attached to the sliding bar N,

y travels.

near Vits back end; it passes over a pulley V, hung in the bed, and has a weight WV, suspended at its end, which has a tendency to draw back the bar.

X, is the spring arm for the throwing out the work; it has its end forked or bent so as to embrace any stick that may be in the lathe; it is always raised by its own spring some distance above the work when not depressed byother means.

Y, is a lever hung near the center of its lergth on a fulcrum y, on the back of the be u Z, is a pattern secured to the top of the stationary bar O, upon ythis pattern the end or handle i, of the cutter lever rests and The loperation of my improvements are as follows: Before inserting the material in the lathe, the cutter head Iis'. rst moved back close to thepuppet head, and the stick or piece of material to be turned is taken by the operator, who inserts one end in the mouth piece D, and holds the other opposite to that D1, and then moves up the center head toward it, by which D, is pushed back until the end of the material comes in contact with the chucks, the lever Q, is then pulled toward the mandril head and the puppet center moved up to the work. The catch t always falls by its own weight into the rack T, and holds the puppet center secure while the turning is performed. The cutter head is moved toward the mandril by the operator who holds the handle z', and as soon as the piece is turned the whole length, the handle will strike the arm 11, and move it to the position shown in red lines in Fig. 2, raising the catch from the rack T, and leaving the bar N, free, when it will be instantly carried back by the weight W, drawing back the lever M, and withdrawing the puppet center from the work. At the same instant that the handle z', strikes the arm o, the opposite side of the cutter head comes in contact with the forward arm of the lever Y, throwing it back, and causing its backward end to bear on the spring arm X, and throw it forward and downward until it strikes the piece of work, and throws it from the lathe to the oor. In most instances the stick will drop of its own weight after the puppet center is removed, but the sprin arm X, will insure its fall, in case it shou d be held by the chuck.

This lathe is adapted for turning handles f of brooms or any handles or balustrade rails, or any articles of which it is desired to turn a large number of the same pattern, and will turn a larger number of sticks in a given inserted as quickly as the operator can receive them or take them up and insert them,

the cones D, and D1, ensuring a perfect cen- -time than any lathe in use, as they can be catch t, attached to the stationary bed, the f said catch having an arm o, attached which is struck by part of theA cutter head after the cut is linished, and released from the ratchet, substantially as herein shown.

THOMAS R. BAILEY. Witnesses: f

L. A. SPALDINQ CHARLES EVANS.

Images