US61442A - Improvement in wood-tubning lathes - Google Patents

Description

JOHN McMI-CHAEL, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR I vTO JOSEPH WRGHT, 0F SAME PLACE.

Letters Patent No. 61,442, dated January 22, 1867.

IMPROVEMENT IN WOOD-TURNING LATHES ltlgr .irlgehuli utenza in im ilgete'etters gnant inn mating gmt nf fige same.

To ALL WHoM 1T MAY concerts;

Beit known that I JOHN McMrcn-AnL, of thc city and county of Philadelphia, and State oiY Pennsylvania, have invented a new and useful Machine for Turning Umbrella '.lips, Handles, and other work and I' do hereby declare' that the following is a, full and exact description thereof, reference being had to the aocompariy'mgdrawings, and to the letters of reference marked thereon.

The nature of my invention and improvement consists, i'n the first place, of a novel mode of bringing thc 'work to the cutters; secondly, of an expeditious mode of securing the pieces to be turned, and ldisconnecting them from the mandrel; thirdly, oi' a mode of regulating thc diameter of tho pieces, with otherl novelties, all of which will be understood by thc i`ollowing description. In the accompanying drawings- Figure 1 is a side elevation of the improved machine.

Figure 2 is an end elevation.

Figure 3 is a plan of ditto.

Figure el: is a side elevation of the rocking-frame H.

Figure 5 is au end elevation of ditto.

Figure 6- is an isometrical viewof .the wedge D for regulating one of the cutter-heads.

Lilie letters in all the figuresindicate the same parts.

A is the standing frame of -the machine. B B are cutter-heads, secured on the bed-plate C by means of the screw-bolts.a,therebeing; longitudinal slotsrluim the anges cA of ythe heads for theglpngitudinaladjustment gf y the latter and cross-slots, d, in the bed-plate for their lateral adjustment, and also 'for thepurpose of placing 'them on angles for changing the sizes and proportions of the" tips. The slots b d are shown in fig. 3. Each head'B and B is divided into two parts, 1 and 2, the wedge D beinginterposed between them, for elevating the cutter mandrel E as the cutter is reduced in diameter by wearing.4 The three pieces in each head are held. together by means of the screw-bolts c, as seen in iig. l. The wedges D Dare adjusted by meansof the set- A screws F F in the uprights ff, the lattdr being bolted at their lower end to the parts 1 1 of the headsB and B',

and at the upper cndto the parts 2'2, as seen in figs. 1 and 2, there being screw-slots in the uprights to allow the elevation of said parts. The wedge is shown in detail 'in fig. 6.v The slots g y admit of the adjustment of the wedge, the confining screws e passing through them. The cutter G, on the mandrel E, is for taking the rough o the pieces to b e turned, and reducing them. to nearly their right size, and the cutter G', on the mandrel E', is.to give them their proper form and s'ize. The frame H secured to the rocking-shaft I, whosejournals, h, turn in the boxes z', of the standing frame A, is for the purpose o f Vholdingthe pieces to be turned. The said Y pieces have long countersunk holes in one end which fit the centre j of the mandrel J, to confine them thereto. The said mandrel is connected with the driving-shaft K, by means of the pulleys L L and belt M. The stand ing centre j is secured in the mandrel N, of the adjustable head O, on the shears k of the, rockingframe H. The mandrel N is made to slide in the head O, there being a knob, Z, onI the outer end of the mandrel for the operator to take hold of, to push it forward vto engage the centre j with the piece to be turned. The apr-ing m on the sliding-rod u bearing against the stud o, which connects the rod with the mandrel, thrnws the latter back when the operator releases his hold to free the centre l7" 'from vthe work. I The rocking-frame H is adjusted inits stoppages, back and forth to -the cutters G and G', by means of thc set-screwsp and p', as seen in gs. 1,2, und O is a -lc r for removing the work from the centre j. It is hung on the pivot q, and has a hole through which the centrej passes freely. The lever is operated by the longitudinal lever P, which, as hereinl after described, is actuated by Athe lever Q connected with the upright R, by means of the fulcrum pin 1'. The sa-id lever P is held at its outer end up against the lever Q by means of the spring S, the upper ond of which is connected with the ceiling, or somo other object above the machine. T'is a rocking-shaft in the head U, vfor bringing the work alternately to the cutters; it is connected to the rocking-frame H by means of the slotted cam V, and the stationary urm s, the inner end of the arm being bolted to the frame, and the outer end connected with the cam by means of the pin t, which passes through the slot u of the cam. There'is a hollow upright, W, connected at its lower end with the outer end of the rocking-shaft T, there being a spring, X, in the 1upright, which bears at its upper end under the outer end of the lever Q. Y is a sliding handle, on the upper end of the upright W, Qr-Athe-doublepuipese. of rocking the shaft T, ando preting the lever Q, the outerei'nifot whichihe l an up-':1nddow n,motion in the slots y117 iin the upright.

The operation is as .follows A piece to be turned being placed between the tivo centresj endl-:md the cutters Gl :indG'fsbeing revolved in the direction of the :ir-rows, by the belt Z,' which. connects: the Vpulleys 12;

on their` mondi-els, vwith thcjeounter-sheft, the operator, byvueans ot the sliding hndle Y, turns'the roeking-shaft T, until the com V hns brought the rocking-frame H to beur :igainstthe set-screw '12... By this4 operationftbe cutter G has takenthe rough ofithe piece und reduced it4 tonearly its -right size,Y He then` by the reverse..

motionof the cam brings thevorlr,l against the cutter G', which reduces itv to-itsqrght size :ind form"by'the: 1 tim'e the frame H is brought-to hear aginst theset-screw p', Then hc tin-ns the'rock-sbaft T senstodisengzigcl;` the work from the cutter, ondpushes the handle Y doivnn'lards, :incl eonsequentlygives the -le'ver Q a. downward' 'I motion,A which operatesthe lever P, und through its nietion the vertical lever'O, soos to tbronv the irork .i'i'elxizv the centre j; he having previously released his hold of the knob', Ato disengage the backcentrej from-thework. Then the lia-ndlc Y is allowed to ascend into its former position, the spring X-bearingt upwards with: the lever Q. The spring S also pulls the lever P upwards, and the vertical lever O is `also'b rugght back by the@ .spring w to its former position. he arrangement of this springis sh'oivn in detail izi'g. 4.' v It will be iedily'- seen that my' machine is susceptible of various modifications without departing fromtrhe main' principii-sof its construction. Forinstnnee,i nstead of h eving it to move the werkte-the cutters, the lntterunay be moved to the work. alternately, by placing the cutter-heads on n rocking-frame, or ono. bed-platewbchslmll hnvee reeiprof eating motion imparted to it, as it'slides on shears by means of u .roeknnd pinionor other equivalent device,

Having thus described my invention, what I claim therein as new, and desire to secure byLetters Patenn'is'- l. The rocking-frame ll, arranged wit-h the cuttei's G endif', unfllthc standing frame subst-nntielly'ns liei'einbefore described, und for the purposes specified.

2. Combining the cam V with-the rocking-shaft l, und rocking-freine H, for giving u reciprocating motion to the lutter', substintiully es und for the purpose above described.

3. 'lhe combination of the cam-lever O, with the ccntrej, and lever P, the latter beingl operated bythe lever'Q,` or its equivalent, substantially as und for the purpose set forth.

4. Arranging the sliding handle Y, and spring X, with the upright W, for the de uble purpose of giving u' rocking motion to the `frame H, bymenns of the cam V, und actuating the cam-lever O, through the intermediate l levers P Q, substantially as described and for the purposes .specific In testimony that the :ih vc is my invention, I have hereunto set my' hand and affixed my seni this 14th doy of November. 1866.

Y JOHN MeMICHAEL. [r..

lVitneSses STEPHEN Usrtcx. Jeux WHITE.

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