US1286299A

US1286299A - Wood-turning machine.

Info

Publication number: US1286299A
Application number: US87427014A
Authority: US
Inventors: Leonard D Hambleton
Original assignee: WALTER L PARKER
Current assignee: WALTER L PARKER
Priority date: 1914-11-27
Filing date: 1914-11-27
Publication date: 1918-12-03
Anticipated expiration: 1935-12-03

Description

L. n. HAMBL E TON. wooo TURNING MACHINE.

APPLICATION FILED NOV. 27,1914.

' 9 SHEETS-SHEET I- m WITNESSES:

rm: mum: run: :41, FUND-1mm wasnmnmu. p. c.

Patented Dec. 3, 1918.

L. n. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION HLED NOV-27.1914.

9 SHEETS-SHEET 2- WITNESSES:

Patented Dec. 3, I918.

ATTORNEY.

mums PETERS m. Fnoruuirlm nMsumGmN. n. a

Patented Dec. 3, 1918.

9 bHEETS-SHEET 3 INVENTOR.

WITNESSES:

ATTORNEY.

L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED Nov. 21. 1914.

Patented Dec. 3, 1918.

9 SHEETS-SHEET 4.

W IT NESSES: [N V EN TOR,

A TTORNEY.

L. D. HAIVIBLETON.

WOOD TURNING MACHINE. APPLRCATION FILED NOV-27. I914.

Patented B603, 1918.

9SHEETSSHEET 5 WITNESSES:

w m M u v m n r w n n a u M a N r m L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED NOV- 27.1914.

Patented Dec. 3, 1918.

9 SH EETS-SHEET 6.

IN V EN TOR.

W I TNESSE S.-

ATTORNEY.

L. D. HAMBLETON.

WOO'D TURNING MACHINE.

APPLICATION FILED Nov. 27. I914.

Patented Dec. 3, 1918.

9 SHEETS SHEET 7.

WITNESSES: IN V EN TOR.

A TTORNEY.

me wanna P215"; co. Fume-(Hum, \vasumnrum p c.

L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED NOV. 27. I914.

9 SHEETS-SHEET 8- WI'INESSES! I INVENTOR. J UWW %%%M% A TTORNE Y.

L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED N0v 21.1914.

Patented Dec. 3, 1918.

9 SHEETS-SHEET 9.

WITNESSES: W m; i W w 5% MW 7/ m WZM ATTORNEY.

w'neoniinnn. r-raMnLEromor LOWELL, massnenusnrrs, nssienon T0 i a rnzeirnnor LoWnLL. ivrnssnonnsnrrst WOOD-TURNIN G lVIACI-IIN menses.

To all whom it may ooncem:

' Be it known that I; LnoNAnnD. I-IAMB E- TON, a citizen of Canada, residing at Lowell, in the county of Middlesex and State of lvlassaehusetts,have invented certain new,

and useful Improvements in Wood-Turning Machines, of whiehthe following is a speci fication.

My invention relates to autouiatie wood turning lathes and is particularly adapted for the roughing and finishing of bobbins,

such as are used in spinning textile materials, or other articles of asiinilar character and form. i

My machine is adapted or taking the blank which usually has a longitudinal oentering hole at one or bothends and Cutting it down or roughing it to a size and shape which nearly corresponds with the finished product, and of immediately thereafter fin-t a The invention resides in the selection and combination of partsof which some are new butsonie are old. y

The stationary rotative head stock is used in connection with a tail stock which is not rotative but has a splndle capable of being advanced and retracted in direetline on the rota tii e axis of the head stock. This tail stock spindle, together with pins which pro ect from the head stock, allows blanks to be rapidly'fed by hand. a j

3 I may use on my machine round, square or other sliapect 'blanles and WhileI prefer to use round orsubstantially cylindrical blanks with an axial hole in each end Iinay use blanks'wit'h an axial holein only one end to fit overthe spindle of the tail stock. prefer to have the "advancing action of the tail stock so arranged thatitlis substantially a blow which drivesthe other end of the blank onto the pins or spursofthe head ste k.

Aseriesof parallelflcircular sawsof wry ing diameters to correspondwith the shape Specification of Letters Patent.

Application filed November 27,1914;. Seria1N0.8?4=,270. I

i Patented Dec. 3, 191%,

which it is desired to out are carried by a, shaft parallel with the main axis of the machine and are so arranged as toinove toward and from said main at exactly the right time. Around these saws is ahood open at the side next to the main axis and having a chute for carrying off the sawdust. These saws engage the blank as soon as it in posltion and rotating, on a horizontal line midway betweenits top and bottom.

As soon' as the saws have done their roughing Work, they are Withdrawn and at the same instant or before, i finishing knife is advanced to the bottom line of the blank and begins finishing the blahk with no loss of time Whatever. y

These relative positions of the roughing saws and finishing knife especially in con: neetion with the feed of the tail stock spin dle allow agreat' increaseinspeed, Which could not be obtained any other position of the cutting partswitl'iout interfetingwith the sawdust hood over the saws.

WALTER L.

Wilt

To obtain thegreatestspeed, however, it

isnecessary tOarrange for the delivery WGllaS the feeding and cutting and 1 pro ride for this by using aclearing arm opera-1 tive by power in connection with the head stock to release the finished blank from the pins on the head stock the Tniornent' it be;

comes finished. This could be used alone, with some little assistafncefroin the operator before feeding the neittblankyto discharge the finished bobbin vvhiohiinight be allowed a to drop through the machine onto the floor or into a delivery chute, but this isfnot desirable, howeverfon account ofthetlanger and impossibility of arranging "aflsatisfac v arious operating arms and canis,

tory delivery chute without interfering with finge rswhich arefltinied t nioyeupon and a grasp the fin1shedbobb1n at the nionientit i is finished and just before the clearing arm has pushed it toward the tail stock. The

result of this operation is that the blank slides throng-lithe fingers to clear the 'head stock and at the-same instantfthe tail stool:

is a retracted; then uieqanvery naemiaoff the finlshedblank out of the Way, lean} ing he operator free to mtmduee a; ne

blank. a

These deliveryfingers may be cleared from the bobbin in various ways whereby, after it is carried clear of the mechanism, it may be dropped .into a. convenient chute through which it passes tothe desired point of delivery.

On account of the great speed of my ma chine, I find it desirable to use a steadying' finger whiLh is carried by an arm in position to engage and steady the blank and to prevent chattering until the delivery fingers are ready to grasp it. Then the arm and steadying finger. are withdrawn while the finished bobbin is discharged. This kind of finger may be used with or without the delivery devices. If the finger is used with out the delivery arms, it remains in contact with the bobbin until the clearing arm has pushed it away from the headstock and the tail stock has re.eded. In such case, the friction of the steadying finger prevents the bobbin from following or being carried by the tail stock spindle.

v My machine is preferably so arranged that space is left for automatic feed devices if desired.

For such an arrangement, I prefer to use delivery arms which work from underneath and a steadying arm operative with the finishing carriage as shown in Fig. 10.

In handling work, such as bobbins, which are heavier at one end than the other, it is desirable that the blank and finished bobbin should be positively held at all times and that the finished bobbin should be so delivered that it may be picked up by other machines performing subsequent operations from a definite position which will always be the same.

The delivery mechanism might be dis pensed with and the clearing arm might be dispensed with but in such case to prevent the finished bobbin from falling in the machinery, it would be necessary, if rapid work were desired, to feed with the right arm and remove the finished bobbin with the left. This would be dangerous on account of the proximity of the rapidly revolving series of circular saws.

In the drawings, Figure 1 is a front elevation of my machine with some parts broken away to better show the construction. Fig. 2 is a side elevation as from the left of Fig. 1 with the gears and gear covers together with some other parts omitted for clearness. Fig. 3 is a view similar to Fig. 2 showing the connections and operation of the circular saws and Fig. 4 is a similar view of the carriage for the finishing knives and tools. Figs. 5, 6 and 7 are detail side elevations showing connections and operation of the steadying finger and of one form of delivery arms. Fig. 8 is a front elevation showing the details of the clearing arm and the delivery devices. Fig. 9 is a side elevation showing the connections for driving the head stock, the cam shaft, and the circular saws from a power shaft. Fig. 10 is a side elevation similar to Fig. 2, of a modified form of my machine. Fig. 11 is a plan view of the machine shown in Fig. 1. Fig. 12 is a front view thereof. Fig. 13 is a detail of the spring plunger, and Fig. 14 of the saws.

In the drawings, A represents the frame of the machine, B indicates the head stock mechanism which comprises a spindle 22 carried by bearings 26 and a pulley 21 which is belted to power shaft 200 by means of belt 201.

22 is the head stock spindle which preferably carries spur chuck 23 having a plurality of spurs or pins 24 and a steel center of usual construction. This steel center may be dispensed with however on some classes of work.

The tail stock spindle 30 carries center 31 adapted to enter the hole in one end of the bobbin or blank C and is slidable in bearings 32 at such a position that the center 31 will move along the main axis or work axis which coincides with the center of revolution of head stock B. Tail stock spindle 30 is advanced and retracted by means of a lever 33 pivoted to the frame at 35 which carries at its other end 36 a roller bearing 37 which engages the tail stock cam 38 carried by cam shaft D. A spring 39 between the arm 36 and the frame of the machine tends to advance spindle 30, and center 31 will remain in that position until the finishing knives have done their work and the bobbin has been grasped by the delivery fingers, if such are used. Lever 33 is forked at 34 and engages pins 202 on a collar 203 carried by spindle 30.

Pivoted on bearings 40 at the front of the machine are parallel ,connected saw shaft supporting arms forming part of saw frame 41. This frame 41 extends below pivot 40 at 42 and is pivotally connected with an arm 43 which carries a roller bearing 44 in engagement with the saw cam 45 carried by cam shaft D. This arm 43 is preferably hung on or pivoted to a depending arm 204 pivoted at its other end to the frame of the machine. This cam 45 is so timedthat at the instant the tail stock has advanced and engaged the blank which constitutes the work to be operated on with the spur chuck of the head stock, the series of circular saws 46 carried by saw shaft 47 which is supported by bearings 48 at the top of the arms of saw frame 41 will engage the blank and begin cutting. Cam 45 should be so timed that these saws will advance rapidly until they engage the blank after which they will move at a proper cutting speed as far as is desired for roughing the blank.

These saws 46 are of varying diameters to 35 s top and bottom of theblank'being operated =1 60 is operated toward andfrom. the Work images semester with the shape to be given the blankubefore the finishing knives take up the work,

Saw shaft 47 is driven through the medium ofpulley 49 driven by belt 205 from power shaft 200.

"Thesesaws should have relatively thin blades andshould be set so closely together that the edges of theteeth of the adjoining saws substantially touch. They should also be driv'en at a very high rate of speed in the same direction in which the blank is rotating so that the relative speed at the point of contact will be as high as possible.

I prefer to use saws thick with teeth set sothat there is substantially no gap between the saws, the saws being about 11 in diameter with teeth about apart. So arranged, with the bobbin blanks making about 5,000 revolutions per minute and the saws about 3,000,*the action of the saws is a grinding rather than a shearing action.

"'-Surrounding the series of saws 46 and covering the ends thereof isa saw hood 50 with a narrow flaring mouth 51 which, when the aws are cutting, spreads above and below the work being'operated upon. From this saw hood50,which I will call the saw dust hood, extends a chute 52 "which I will call the saw dust chute. This may be carried'to any; convenientplace where it is desired to deliver thesaw dust and moves back and fo'rtlrwith the-hood and with the saws.

{The cutting position of the saws is so arranged as tobe in a line midway between the upon. Their axis is level with thework anis. represents the finishing carriage which is movable toward and from the work axis in suitable lways6l. This finishing carriage axisby means of a finishing carriage lever 62 pivotedto ELHBXlZBHSlOH of the carriage at 63 and'pivoted to a'bracket 64 fixed to the frame of the machine. The other end 65 of lever 62 carries a roller bearing 66 in engagement with a finishing cam 67 carried by cam shaft 'D.- A spring 68 between end 65 and the frame of the machine tends to withdraw the carriage from the work axis.

This finishing carriage may carry a back knife 70, a cone knife 71,a head knife 72 as.

- bobbinwhilethe knives are at World knives for formearn 67 eaabe seeme -era mistresses or without theother finishingtoolscari en;- gage the blank at the instant the roughing saws cease cutting." great deal of time is saved by thus positioning the finishing knives With reference to theroughing saws. To prevent chattering, while'xthe finishing knivesand tools are cutting, I useanelastic steadyingfinger 80! This finger 80 is ref;

erably shaped at its outer end to substan tially fit the curve ofthe roughed bobbin barrel and is carried by aspring plungerjSll at the end of steadying arm .82 whereby it exerts an elastic steadying pressure on" the Its pressure also tends to overcome any tend: ency of the blank to follow the tail stock when the tail stock is being withdrawn.

Steadying arm 82 is pivoted tothe frame of the machine at 83 and preferably has an extension-84 carrying a counterweight 85. l he arm 86 is pivoted to extension 84: atone end and at the other which carries the roller bearing 87 which engages the steadying cam 88 on cam shaft D, is pivoted :to an arrn 89 which is pivoted to another part oftheiframe of the machine. J i

Steadying cam 88 is so shaped and timed that steadying finger will engage the roughed bobbin atthe same time with the finishing knives and will remain in engagement until the delivery fingers grasp the finished bobbin, if deliveryfingers are used; or they are not used, until the clearing arm disengages the finished bobbin frorrithe head stock chuck and the tail stockspindle has also been withdrawn.

Slidable horizontally in suitable bearings in frame A preferably underneath the head stock mechanism and thebearings26 is a clearing rod 121at oneendof, which is i carried the forked clearingarnrlQQ. This clearing. arm 122 terminates in two prongs forming a fork whichextendsup onfboth sides ofhead stockchuck 23; The distanee between the prongs ofthe clearing armforlt is less than the diameter of the headlof the finished bobbin whereby ifit is pushed for ward, it will engage such head andpush the bobbin head off from the head stockchuck and center.

b The clearing arm androd are operated by means of a lever 123 pivoted to the frame at 124: one end of which extends upward into the groove 125 on rod 121 and the other end of which carries a roller bearing 126 in engagement withend cam 127 carriedby cam shaft D. A clearer armspringf128b'etween lever 123 and the frame of the Ina chine tends to force clearer arrn l22ftoward the tail stock wereit notfo r the action of end cam. 127, I willlcalfthe clearing arm cam; j p b The delivery arms and fingers shown in Figs. 5 and 7 are positioned at the back of the machine and are arranged to come forward and downupon the work as shown. Each delivery arm 90 carries at its end parallel fingers 91 which are of spring metal fixed at one'end and having opposite concave curves adjoiningeach other at their free ends with the tips thereof flared so that when pressed down upon a bobbin or other work being operated upon, they will spread apart allowing the work to slip into the curves where it .will be elastically held until removed therefrom by a force stronger than the springs of the fingers 91. These fingers seize the blank.

I prefer to use two arms 90 each of which is pivoted at 92 to the frame of the machine and each of which has a lateral extension toward the other which are adjustably bolted together. One arm has an extension 93 which carries a counterweight 9 1.

I prefer to pivot an arm 95 at one end to extension 93 and at the other end to an arm 96 the other end of which is pivoted to the frame of the machine. At the junction of arms 95v and 96 is a roller bearing 97 which engages the delivery cam 98 carried by the cam shaft D.

This cam shaft 98 is so cut and timed that the delivery fingers .will start to approach the work or blank being operated on when thefinishing knives have been partly moved away from the work and before the clearing arm has been brought into action. They remain stationary in engagement with the work on the work axis long enough for it to be cleared from the head stock and the tail stock, when they rise rapidly to make room for the next blank.

As the delivery arms are rising and before. they reach their resting positions, they pass on each side of releasing pins 100 fixed to suitable brackets on the frame of the machine. The result of the releasing action of pins 100 is to spit or throw the finished bobbin in the opposite direction to that in which the-delivery arms are moving and this would drop it into the machinery if I did not providethe directing

gates

103, 104. These consist of rimmed plates with the rims broken away at the top and bottom each carried by a

gate rod

105 and 106 slidable in

suitable bearings

107 and 108. These are caused to advance toward each other just after the delivery arms pass by into the position as shown by the dotted lines in Fig. 8 where their rims will pass by the ends of the bobbin or work 0 whereby as the bobbin is removed fromthe delivery fingers by pins 100 it is caught byv the rims of these gates and directed downward into the delivery chute II which carries it to the point desired.

To actuate the gatesl03 and 104. I use an arm 109 pivoted near the vmiddle to a racketllQ on. the framefand at one end to rod 105 and at the other end to an arm 111 which is bent downward and is carried by rod 106.

Pivoted at the end of rod 106 is a lever 112 which is pivoted at 113 to a bracket on the frame of the machine and carries at its other end a roller bearing 1141- in engagement with a suitable slot 115 which forms a part of the gate cam 116 carried by cam shaft D. This cam 116 is so cut and timed as to close in the gates 103 and 10 1 toward each other just after the bobbin has passed and to separate them after the bobbin has been finally delivered.

I prefer to drive the various parts of my machine from the power shaft 200 which is driven by pulley 210 and belt 211 from the source of power. A pulley 212 carries belt 205 and a pulley 213 carries belt 201 for the saws and head stock respectively.

The cam shaft D is driven by gears 220, 2' 1, 222 and 223 from a pulley 224 driven by belt 225 carried by shaft 200 or by one of the pulleys 226.

i. prefer to drive all these from one power shaft and I prefer that all the operating cams should be carried by one cam shaft but it is clear that there might be two or more sources of power and two or more cam shafts if desired.

The tail stock spindle lever 33 might be connected directly with the clearing arm lever 123 to act at exactly the same time, tln-ireby dispensing with cam 127, but it is better to have the spindle and clearing arm separately adjustable as their operations are not necessarily performed at the same time. If the blank is firmly driven on to the pins of the head stock clutch, the tail stock spindle may be withdrawn without the blank following it and if no delivery means were used, the spindle might be first withdrawn and then the clearing arm could act to push off the finished blank allowing it to drop. By using the steadying finger, however, and better by using the delivery fingers, the tail stock spindle can be withdrawn and at substantially the same time, the clearing arm can act, as the friction of the fingers prevents the blank from following the spindle. Thereby quicker action is obtained.

This machine embodies substantially the following elements. Means as the tail stock spindle, which are stationary, when they receive a blank and are adapted to support the blank while it is carried forward and forced on to the rotative receiving member such as the head stock. Means for rotating the head stock and for forcibly advancing and afterward retracting the tail stock are also required. IVhen the blank is advanced and begins to rotate, roughing means, preferably parallel circular saws with means for rotating and for advancing and retracting. them, inovemputoward the ,axisuof the This 1givesquicker action. ,As soon asthe roughing means have done their work and begin, to be retracted together, with their hood andchute, finishing means, comprising knives, tippingtools,etc. arelbrought up and finish the blank. vA steadying. finger operr ates atsubstantially thelsame time with the finishing knives to prevent chatteringv and if desired tolkeep .theiblank. from-following the tail st ck spindle. Thisinay or may not be used. When finished, means are provided for withdrawingthe tail stock spindle and a clearing arm to remove the blank by power from the head stockthus clearing the blank of the cutting machinery. f llt is better to carefully remove the finished blankby grasping and withdrawing -'it by delivery mear1s,carrying it to the point desired where it may be released by suitable pins orhooks to bedescribed. I prefer to provide means for --receiving and directing the, delivered blank so that it will gently restor drop at exactly the desired point. lhis may bethe gates and ,chute before described or prefer ably the endless chain delivery means which 'Lwill now describe.

Referring to Fig. 10, the steadying finger describedis replaced by a linger pivoted at 131 to the finishing carriage G0 medially of its length It normally rests on a stop 132 and .is held down by a tension spring 133 so thatits tip 134 which is curved will bear on the blank C while it is beingoper ated on by the finishing knives.

prefer this construction of steadying finger wherean automatic feed with delivery atrthe top is to be used, and in connection therewith ll. prefer the delivery fingers located underneath as will be n'owdescribed. A bracket at the front of the machine carries thepivot 1 11 for the connecteddelivery arms 142 which carry delivery fingers 143 similar to 91. Thesearmsare operated by a connecting rod 1% hung on a pivoted suspending link 14:5 and carrying rollerbearing 146 in operative relation with the delivery arm cam. As will be seen in the drawing, these arms with their fingers come up from underneath and carry the finished blank down as shown by the dotted lines. a i a i For releasing mechanism, prefer to use

parallel sprocket chains

150 and 151 carried respectively by two pair of sprockets 152and 153 on

suitable shafts

154 and 155 driven by any suitable mechanism from the camshaft D. Each sprocket carries a plurality of hooks or pins and sprockets 152 are so placed that these hooks 160 will pass on each side of the downward path of delivery fingers 14:3 and as they are travelsprocket ,chain' 171 whielralso engages a sprocket carriedby cam shaft Dior any other suitable (lllVlIlg means may be used.

thedeliveryfingerswome uptromun derneath, 1 their free, ends may be shaped .so

as to merely receiveor'take butf'not fto seize are "finished, blank, \"As 'thelblank is th refore .not'grasped bu m rel supported when it is cleared by clearing pins 160, it is. not l.

rectinggates103 and 104;. VI claim:

1. In a woodturning machine, the combinecessary to use any equivalent forthedi;

nation of a headstock rotative on the work axis otthe machine and al ta-i-l stock adapted to receive and support a blankland ,slidahle back and forth'in,line with the work axis, with a series of railelgircuiagsaws"or dilferent sizes rota 've qon an -airis. substan tially, level with and; parallel to the: work axis and movabletoward "and from. said work axis on a horizontal-level therewith, a

finishing knife movable toward and from a line ibelowlsaid :work an iswhich coincides with the bottom of the finished blank, means for sliding the tail stock, means for. rotat :ing the circular, saws. lneans fonmoving the circular saws toward and from the work axis, and.means forlmoving.the finislii ng knife toward and irom the line anew; the work as described. i f a y 2. In a wood turning machine, the combi; nation, ot'a head stock rotative on thework axis of the machine, and a tail stock ad anted to receive and support a blank and slidable back and forth in line with the work axis, with a series of parallel circular saws of ditlerentwsizes rot-ative on an axis substan} tially level withflandlparallelto the work i 1 y axis and movable toward 1 and from said work axis on a horiaontal level therewith, a

hood which incloses lthe circular saws and has a flaring mouth adjoining the work axis and ismovable with the, circular saws,

a chute connected to and movable with. the

hood, a finishing knife onithe side of the work {1X18 opposite the circular saws and movable toward and from a, line belowsaid work axis which coincides withlthe bottom of the finished blank, meansiforgshding the tail stock, means for rotating, the circular saws, means for; movingtherirculausaws and hood toward. and fromnthe; work axis, and means for moving the finishing knife toward and from the line below the work as described. a 1 l 3. In a wood turning machine, the combi-= nation of a headstock rotative on, the work axis of the machine and having receiving pins for a blank, means for rotating the head stock, a cam shaft, and a tail stock having aspindle adapted to receive and support a blank and slidable back and forth on said work axis, with a tail stock cam carried by the cam shaft, connections between the tail stock spindle and the tail stock cam, a series of parallel circular saws rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, means for rotating said saws, a saw cam carried by the cam shaft, connections between the saw cam and the circular saws, a finishing carriage with finishing tools movable toward and from said work axis on the opposite side from the circular saws, a finishing cam carried by the cam shaft, and connections between the finishing carriage and the finishing cam, said cams being so formed that the, tail stock spindle will be advanced, that thereafter the circular saws will be advanced and retracted, that thereafter the finishing carriage will be ad vanced and retracted, and that thereafter the tail stock spindle will be retracted as described.

4. In a wood turning machine, the combination of a head stock rotative on the work axis of the machine and having receiving pins and a blank, means for rotating the head stock, a cam shaft, and a tail stock having a spindle adapted to receive and support a blank and slidable back and forth on said work axis, with a, tail stock cam carried by the cam shaft, connectionsbetween the tail stock spindle and the tail stock cam, a series of parallel circular saws rotative on an axis substantially parallel with the work aXis and movable toward and from said work axis, means for rotating said saws, a saw cam carried by the cam shaft, connections between the saw cam and the circular saws, a finishing carriage with finishing tools movable toward and from said work axis on the opposite side from the circular saws, a finishing cam carried by the cam shaft, and connec tions between the finishing carriage and the finishing cam, a steadying arm which terminates in an elastic steadying finger movable toward and from the work axis and to and from the blank, 21 steadying arm cam carried by the cam shaft, and connections between the steadying arm and the steadying arm cam, said .cams being so formed that the tail stock spindle will be advanced, that thereafter the circular saws will be advanced and retracted, that thereafter the finishing carriage will be advanced and retracted, and that at the same time the steadying arm will. be moved toward and from the work axis, and that thereafter the tail stock spindle will be retracted as described.

5. In a wood turning machine, the combi nation of a head stock rotative on the work axis of the machine and having receiving pins and a blank, means for rotating the lead stock, a cam shaft, and a tail stock having a spindle adapted to receive and support a blank and slidable back and forth on said work axis, with a tail stock cam carried by the cam shaft, connections between the tail stock and the tail stock cam, a series of parallel circular saws rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, means for rotating said saws, a saw cam carried by the cam shaft, connections between the saw cam and the circular saws, a finishing carriage with finishing tools movable toward and from said work axis on the opposite side from the circular saws, a finishing cam carried by the cam shaft, and connections between the finishing carr'age and the finishing cam, a clearing arm, a clearing arm cam carried by the cam shaft. connections between the clearing arm and the clearing arm cam, said cams being so formed that the tail stock spindl will be advanced, that thereafter the circular saws will be advanced and retracted, that thereafter the finishing carriage will be advanced and retracted, and that thereafter the tail stock spindle will be retracted and the clearing arm will be advanced, as described.

6. In a wood turning machine, the combination of a head stock rotative on the work axis of the machine and having receiving pins for a blank, means for rotating the head stock, a cam shaft, and a tail stock having a. spindle adapted to receive and support a blank and slidable back and forth on said work axis, with a tail stock cam carried by the cam shaft, connections between the tail stock spindle and the tail stock cam, a series of parallel circular saws rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, means for rotating said saws, a saw cam carried by the cam shaft, connections between the saw cam and the circular saws, a finishing carriage with finishing tools movable toward and from said work 'axis on the op posite side from the circular saws, a finishing cam carried by the cam shaft, and connections between the finishing carriage and the finishing cam, a steadying arm which terminates in an elastic steadying finger movable toward and from the work axis and to and from the blank, a steadying arm cam carried by the cam shaft, and connections between the steadying arm and the steadying arm cam, a clearing arm, a clearing arm cam carried by the cam shaft, connections between the clearing arm and the clearing arm cam. said cams being so formed that the tail stock spindle will be advanced, that thereafter the circular saws will be ad 'anced and retracted, that thereafter the finishing carriage will be advanced and retracted, and that at the same I ia-386,399

time the steadying arm Will be moved tow and and iron the work axis, and that thereafter the; tail. stock spindle will be retracted, and theicleaning arm villbe advanced, as do 5 In a wood turning machine, the combination of ahead stool; rotative on the We -l; axis ofjthe-niachine and having receiving pine; for a blank, n eans ytor rotating the headstock, aeamshait, and a tail stock havinga spindle adapted to receive and support a blank slidable back and forth on said worklanis, with a tail stock ca-inearried by the ea neshait, connections between the tail 'stoek spindle and the tail stool: cam, a series ofparallel circular saws rotative on an axis substant ally parallelwith the Work ax s and movable- ;toward and from said Work axis, means for rotatinggeaid eaWs, a saw livery finge thereatter tractedandthe clearing arm will be adlea n carried bythe cam shaft, eonnectioi'is, be

tween the saw carnfandthe circular same, a finishing" carriage with finishing tools movable toward and fron'i said work axis on the ppposite side from the circular saws, a finishingc'am carried 'hy the cam shaft, and con nections between the finishing carriage and the -,finieh}ing ea1n,- a: clearing arm, a clearing arm-camearriedby the cam shaft, connecQ .tlons hetweenthe lclearln arm and the clearing; armleam, connected elivery arms which terminate in spring delivery fingers movable towardfand from the Work axis and to and vifroni the blank,a delivery arm cam carried livery arms and the delivery arm cam, said ean sfbeing'so formed that the tail stock spindle will, be advanced, that thereafter the circular-saws will be advancedand retracted,

that thereatter the finishinglearriage will be advanced and retracted, that thereafter the delivery arn'wwill be ifnoitedso that the deengage the blank, and that the tail stock; spindle will be revanced, and that thereafter the delivery arms Willi bemoved away from the Work axis, as deseribedn,

1 8. In a Wood turning machine, thecomhination of a head axis of them-achine andhaving receiving pins for a blank, means for rotating the head of parallel circular saws rotatire on an axie H ,SllgbSiJMltlQli) parallel with the Work 3X18 on stock, a cam shaft, and a tail stock llttvll'lgfl spindleadapted" to receive and support a blank; id slidalole back and forth on said Workaxie; with a. tail stock cam carried by thecam'w'; aft, conneotionebetween the tail rstocklspindleand the tail stock cam, a series and norable toward and from said Work axis, means for rotating said serve, a canicarried by the cam shaft, connectionsv betweenrthe saw cam and thecirc ular saws, a hood ,iv hich incloses the circular seam; and has a flaring ngioiuth adjoining the work axis nationioit' ahead stock rotatine on the work Stock rotative on the Work and r is movable WithU-the circular saws, a chute connected to andv movable Withathe hood, a finishing carriage with, finishing tools morable toward and :from work axis on the opposite side item the 'circular saws, a finishing cam carried by! the cam aha ft, and connections zbetween the 1 finishin g carriage and the finishing, ca1n,a cleaning arm, a clearing arm cam carried the cam shaft, connections between the clearing 81111 tracted, that thereafter: the deliverir arms will be moved so that the delivery; fingers engage the blank, and that thereafter the tail. stock spindle Willj ee retracted and the clearing" arm Will be advanced, ,andthat thereafter the delivery arms will be moved away from the Work axis and while so being 1 moved the releasing means will; release the finished bobbin from the delivery fingers, as

, described, 1 b the cam shaft, connections betw the a 9. in a Wood turning inachinethe cornbi axie of the machine and having receiving pins" fora blank, means for rotating the head stock, a cam shaft, andta tail stock having a spindle adaptcdto receive and supportablank and slidable back and forth on said work axis, with a tail stock cam carrled by the cam shaft, conneetlons between the tail stock spindle andthe tail etoek cam,

a series of parallel circular saws, rotative on an substantially parallel 1 with the ork axis and movable toward and from said work axis, means for; rotating l-said saws, a

saw cam carried by the cam shaftyconnecitlons lbetween the saw cam and the circular saws, a hood which incloses the circular saws' and has aflaring mouth adjoining the ork axis: and is movable with the circular saws, a chute connected tonndmova-ble with the hood, a finishing carriage ith finishing ltools niorable toward and hem said ork axis onlthe opposite side fromthe circular saws, finishing cam ,carrieclhbywthe cam shaft, and connections between the finishing carriage and the finishing cam, a cleaning 'a-rm,-a clearing arm earn carried 1b) the earn ehaft, connections-between the clear ng arm and the clearing arm Scam, connected delivery arms which terinlnate each (deli vtery fingere movable toward and from "the ork ax s a d to a d th b anh, ade :1

livery arm cam carried by the cam shaft, connections between the delivery arms and the delivery arm cam, parallel endless chains, a plurality of pairs of releasing pins so carried thereby as to travel into the path of the delivery fingers, said cams being so formed that the tail stock spindle will be advanced, that thereafter the circular saws will be advanced and retracted, that thereafter the finishing carriage will be advanced and retracted, that thereafter the delivery armswill be moved 'so that the delivery fingers engage the blank, and that thereafter the tail stock spindle will be retracted and the clearing arm will be advanced, and that thereafter the delivery arms will be moved away from the work axis into operative relation with the releasing pins, as de scribed;-

10. Ina wood turning machine, the combination of a head stock rotative on the work axis'of the machine and having re ceiving pins for a blank, and a tail stock having'a spindle adapted to receive and sup port a blank and slidable back and forth on said work axis, with a series of parallel circular saws of different sizes rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, a finishing carriage with finishing tools movable toward and from the work axis, a clearing arm movable from the head stock toward the tail stock in such p0- s'ition as to engage the finished blank, means for advancing and retracting the tail stock spindle,means for advancing and retracting the clearing arm, means for moving the circular saws toward and from the work axis, and means for moving the finishing carriage toward and from the work axis as described.

11. In a wood turning machine, the combination of a head stock rotative on the work axis of the machine and having receiving pins for a blank, and a tail stock having a spindle adapted to receive and support a blank and slidable back and forth on said work axis, with. a series of parallel circular saws of difi'erent sizes rotative on an axis substantiallyparallel with the work axis and movabletoward and from said work axis, a finishing carriage with finishing tools movable toward and from the work axis, an elastic steadying finger movable toward and from the work axis at the same time with the finishing carriage, means for advancing and retracting the tail stock spin dle, means for moving the steadying finger toward and from the work axis, means for moving the circular saws toward and from the work axis, and means for moving the finishing carriage toward and from the work axis as described.

12. In a wood turning machine, the com bination of a head stock rotative on the work axis of the machine and having receiv ing pins for a blank, and a tail stock having a spindle adapted to receive and support a blank and slidable back and forth on said work axis, with a series of parallel circular saws of different sizes rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, a finishing carriage with finishing tools movable toward and from the work axis, an elastic steadying finger movable toward and from the work axis at the same time with the finishing carriage, a clearing arm movable from the head stock toward the tail stock in such position as to engage the finished blank, means for advancing and retracting the tail stock spindle, means for advancing and retracting the clearing arm, means for moving the circular saws toward and from the work axis, and means for moving the finishing carriage toward and from the work axis as described.

18. In a wood turning machine, the combination of a head stock rotative on the work. axis of the machine and having receiving pins for a blank, and a tail stock having a spindle adapted toreceive and support a blank and slidable back and forth'on said. work axis, with a series of parallel circular saws of different sizes rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, a finishing carriage with finishing tools movable toward and from the work axis,'a clearing arm movable from the head stock toward the tail stock in such position as to engage the finished blank, spring delivery fingers movable toward and from the work axis, means for advancing and retracting the tail stock spindle, means for advancing and retracting the clearing arm, means for moving the delivery fingers toward and from the work axis, means for moving the circu-' lar saws toward and from the work axis, and means for moving the finishing carriage toward and from the work axis as described.

14. In a wood turning machine, the combination of a head stock rotative on the work axis of the machine and having receiving pins for a blank, and a tail stock having a spindle adapted to receive and support a blank and slidable back and forth on said work axis, with a series of parallel circular saws rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, a finishing carriage with finishing tools movable toward and from the work axis, a clearing arm movable from the head stock toward the tail stock in such position as to engage the finished blank, spring delivery fingers movable toward and from the work axis, means for advancing and retracting the tail stock spindle, means for advancing and retracting the clearing arm, means for moving the circular saws toward and from the work axis,

means for movingthe finishing carriage tomoving the delivery fingerstoward andifrom the i work axis, and means (for releasing the finished blank from thedelivery fingers as described. a a

nation of ahead stocklrotative on the work axis of the machine, means for continnously rotating the head stoclnanda tailtstock adapted to receive and sup ort a blank and .slidable ,back and forth in line with the work axis, with a series of parallelcircular ,saWs rotativeion an axis substantially parallel with the work axis and movable towardand from said work axis, means for rotating said saws,a finishing carriage movable toward and from said work axis,\finishing tools carried thereby, means for advancing the tail stock spindle, means for thereafter moving the circular saws toward and from the work axis,,means for thereafter moving the finishing carriage toward and from the work axis, and means for w ll thereafter retracting the tail stock spindle as described.

' 16. In a woodturning machine, thecombination of a head stock rotative on the Work axis of the machine, means forrotatingthe head stock, and a tail stockadapted toreceive and support a blank and slidableback and forth in line with the-work axis, with a seriesof parallel circular saws .rotative on an axis substantially parallel With the 'Ofk axis and movable toward and from said workaxis, means for rotating said saws, a

f at

finishing carriage movable toward and from sald .work ax s, finishing tools carried thereby,a clearing arm movable from the head stock toward the tail stock, means for advancing the tail stock spindle, means for thereafter moving the circularsaws toward and from the work axis, means for thereafter moving the finishing carriage toward and from the work axis, means forthereafter retractingthe tail stockspindle, and means for then moving the clearing arm toward the tail stock as described.

s a 17. In a wood turning machine,the combination of a head stockrotative on the work axis of the machine, means for rotating the head stock, and a tail stock adapted to receive and supporta blank andslidable back andforth in lineswith the work axis, with a seriesof parallel circular saws rotative on an axis substantially parallel with the work axis and ,movablei toward and from ,sa d work ,ax s, means for rotating said I saws, .a finishing carriage movable toward and from sa d work ax1s,fin1sh1ng toolscarried thereby, an; elastic -steadying finger,

rrneansfor advancing the tail stock spindle, fmeansafor thereafter moving the circular saws-toward and from the work axis,[means for thereafter moving thefinishing, carriage and the steadying finger toward and from the work axis, and means for thereafter retracting the tail stockspindle as described.

18. In a Wood turning machine,the combination of a head stock rotative on the 1 p WQIk ax1s=of the machine, means for rotat- ,15. In a Wood turning mach ne, the combimg the headstock, and a tailstock adapted toreceive and support a blankand slidable back and forth in line with the work axis,

with a series ofparallel circular saws rotative on an axis substantiallyparallel with the work axis and movable toward andfrom said work axis, means for rotating said saws,a finishing carriage movable toward and fromsaid work axis, finishing tools car ried thereby, an elastic steadying finger, a clearing arm movable from thehead stock toward thetail stock, means for advancing 11 ger toward and from the workaxis, means for thereafter retracting the tailrstock spindie, and means for, then moving the clearing alrmttoward the tail stock as described.

19. In a Wood turning machine, the comwork axis of the 1nachine,means for rotating the head stock, and atail stock adapted 1 to receive and support a blank and slidable back and forth in line with thejwork axis, w th a series of parallel circularsaws rotathe work axis and movable toward and from said Work axis, means forrotating said saws, a finishing carriage movable toward and from said work axis, finishing tools carried thereby,a clearing arm movable from the head stock toward the tail stock, delivery fingers adapted to advance and take and to (lle, means for then movingthe clearing arm toward theta l stock, and means for then bination of a head stock rotative on the i 1 tive on an axis substantially parallel with l Withdrawing the delivery fingers as described.

r 2 0. In a wood turningmachine, the com- ";bination of a head stock rotative on the work axis of the machine, means forrotating thehead stock,and a tail stock adapted ,to receive and support a blank and slidable hack and forth in line withthe work axis,

with fitwSGI'lfiS ofparallel circularsaws irota- ,tiveuonan axis substantially parallel with :the workaxis r and movable toward and from said work axis, means for rotating said saws,

a finishing carriage movable toward and i im sai Wo exiawfin shing t ls a -r i ried thereby, a clearing arm movable from the head stock toward the tail stock, de-

' livery fingers adapted to advance and take and to withdraw the finished blank, means for advancing the tail stock spindle, means for thereafter moving the circular saws toward and from the work axis, means for thereafter moving the finishing carriage toward and from the work axis, means for thereafter advancing the delivery fingers, means for thereafter retracting the tail stock spindle, and means for then moving the clearing arm toward the tail stock, and means for then withdrawing the deliverv fingers, together with discharging means which then discharge the finished blank from the delivery fingers as described.

21. In a wood turning machine, the combination of a head stock rotative on the work axis of the machine, means for re tating the head stock, and a tail stock adapted to receive and support a blank and slideble back and forth in line with the work axis, with a series of parallel circular saws rotative on an axis substantially parallel with the work axis and movable toward and from said workaxis, means for rotating said saws, a finishing carriage movable toward and from said work axis, finishing tools carried thereby, a clearing arm movable from the head stock toward the tail stock, delivery fingers adapted to advance and take and to withdraw the finished blank, means for advancing the tail stock spindle, means for thereafter moving the circular saws toward and from the work axis, means for thereafter moving the finishing carriage toward and from the work axis, means for thereafter advancing the delivery fingers, means for thereafter retracting the tail stock spindle, means for then moving the clearing arm toward the tail stock, and means for then withdrawing the delivery fingers, together with discharging means which then discharge the finished blank from the delivery fingers, and means for receiving and directing the delivered blank as described.

22. In a wood turning machine, the combination of a head stock rotative'on the work axis of the machine, and a tail stock having a spindle adapted to receive a blank and slidable back and forth in line with the work axis, with a series of parallel circular saws of different sizes rotative on an axis substantially parallel with the work axis and movable toward and from said work axis, a finishing knife movable toward and from said work axis, means for advancing and retracting the tail stock spindle, means for moving the circular saws toward and from the work axis, and means for moving the finishing knife toward and from the work axis as described.

23. In a wood turning machine, the combination of a rotative head stock havin receiving pins, with a slidable tail stock adapted to receive and support a bobbin blank and to force it on the receiving pins, roughing means which include a plurality of closely associated circular saws of different diameters adapted to engage the blank after it engages the head stock, finishing means adapted to engage the blank after the roughing means, delivery means for engaging the finished blank after it is finished by the finishing means, means for withdrawing the tail stock, means for clearing the finished blank from the head stock, means for withdrawing the delivery means, and means for discharging the finished blank from the delivery means as described.

24. In a wood turning machine, the combination of a rotative head stock havin receiving pins, with a slidable tail stock a apt ed to receive and support a bobbin blank and to force it on the receiving pins, roughing means which include a plurality of closely associated saws of different diameters adapted to engage the blank after it engages the head stock, finishing means adapted to engage the blank after the roughing means, means for withdrawing the tail stock after the blank is finished. and means for clearing the finished blank from the head stock as described.

25. In a wood turning machine, the combination of a rotative head stock having receiving pins, with a slidable tail stock adapted to receive and support a bobbin blank and to force it on the receiving pins, roughing means which include a plurality of closely associated saws of different diameters adapted to engage the blank after it engages the head stock, finishing means adapted to engage the blank after the roughing means, meansfor withdrawing the tail stock after the blank is finished, means to prevent the blank from following the tail stock, and means for clearing the finished blank from the head stock as described.

26. In a wood turning machine, the combination of a rotative head stock having receiving pins, with a slidable tail stock adapted to receive and support a bobbin blank and to force it on the receiving pins, roughing means which include a plurality of closely associated saws of different diameters adapted to engage the blank after it engages the head stock, finishing means adapted to engage the blank after the roughing means, means for steadying the blank while engaged by the finishing means, delivery means for engaging the finished blank after it is finished by the finishing means, means for withdrawing the tail st0"l means for clearing the finished blank from the head stock, means for withdrawing the delivery means, and means for discharging the finished blank from the delivery means as described.

wetness 27. In a wood turning machine, the combination of supporting means for the blank, a plurality of circular saws, means forirotating the blank, means for rotating the saws at high speed while in contact with the blank so as to rough the blank to its required shape, means for moving the saws into and out of contact with the blank, means for trimming or finishing the blank, said last mentioned means being automatically movable into and out of contact with the blank after the roughing operation, and means for thereafter automatically delivering the finished blank.

28. In a wood turning machine, the combination of end supports for the blank, a series of circular roughing saws, means for rotating the saws at a high speed while in contact with the blank whereby to shape the same,

and supporting means for the saws including downwardly projecting arms pivoted intermediate their ends, an olf-set arm connected to the lower end of said first mentioned arms, a hanger arm pivotally supported at its upper end and having pivotal connection at its lower end with said off-set arm, movable trimming devices, and actuating means for said devices whereby to move the trimming devices into contact with the work as disengaged by the roughing saws.

29. In a wood turning machine, the combination of end supports for the blank, a drive shaft, a plurality of circular roughing saws, trimming devices, means operatively,

associated with said shaft for rotating the saws, a movable carrier for the saws, a movable carrier for the trimming devices, cams on said shaft operatively associated with said carriers whereby to alternately move into operative position relative to the work the roughing saws and trimming devices.

30. In a wood turning machine, the combination with end supports for the blank, of a plurality of circular roughing saws, means for moving the saws into and out of contact with the blank to shape the same, said means including a rock-arm support for the saws, and means for actuatlng the rock arm, a hood or housing for the saws, discharge Copies of this patent may be obtained for chute leading from said hood, and said hood and discharge chute being mounted for movement with said rock arm.

31. The process of making bobbins from blanks which consist of causing a blank to revolve with great rapidity in one direction upon a fixed axis and while so revolving to cause a large number of toothed cutters rotating in the same direction with the blank to be moved upto said blank for grinding it down, of withdrawing said cutters and immediately thereafter of bringing up to it shearing cutters for finishing. l r

a 32. In a wood turning machine, the combination of end supports for the blank with means for rotating the blank in one direction at great speed, a plurality of thin closely associated circular saws with relatively small teeth for grinding down the blanks, means for rotating the saws at great speed in the same direction with the rotation of the blank, a hood which incloses the saws and has a narrow mouth proximate the blank, means for moving the saws .an hood toward and from the blank, finishing knives movable toward and from the blank and means for advanclng the finishing knives by the saws.

33. In a wood turning machine, the combination of end supports for the blank, with means for rotating the blank at great speed, a plurality of thin closely associated circular saws with relatively small teeth for grinding down the blank, means for rotat- 1ng the saws at great speed, means for moving the saws toward and from the blank, and l finishing knives movable toward and from the side of the blank opposite the circular saws, together with means for advancing the finishing knives to the blank after it has been ground down by the saws.

In testimony whereof I hereto allix my a signature in presence of two witnesses.

LEONARD D. HAMBLETON.

Witnesses FISHER H. PnAnsoN, GARDNER W. Pnnason.

Washington, D, G. 3