US1111795A - Wood-turning machine. - Google Patents

Description

-W. S. HAWKBR; WOOD TURNING MACHINE. APPLICATION mum MAY 5,1910.

1 1 1 1,795. Patented Sept. 29, 1914.

7 SHEETSSHEBT 1.

novntoz wwiwxw YHI MORRIS PITIRS CU" PNOTOJJTNO WASHINGTON- D. C

W. S. HAWKER.

WOOD TURNING MACHINE.

APPLIOATION FILED MAY 5,1910.

1,1 1 1,795. Patented Sept. 29, 1914.

7 SHEBTSSHEET 2,

. w A. 2% l w 7; nURRIS PETERS CO. PHcYO-Llrrlo WASHING YON. 0 c.

W. S. HAWKER.

WOOD TURNING MACHINE. APPLICATION FILED MAY 5,1910.

1 .1 1 1,795. Pa ented Sept. 29, 1914.

7 SHEETS-SHEBT 8.

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THE Horms PETERS ca. PHOTO-LITHQ. WASHINGTON. D. C.

W. S. HAWKER.

YWOOD TURNING MACHINE.

APPLIOATION FILED MAY 5,1910.

1,1 1 1,795. Patented Sept1.29, 1914.

. 7 77 7 sums-sans.

g immwQ Witnesses W. S. HAWKER.

WOOD TURNING MACHINE.

APPLICATION FILED MAY 5,1910.

Patnted Sept.29,1914.

. 7 SHEETS-SHEET 5.

attouwq 7HE NORIRIS PETERS 60.. Pnoroilrhof, WASHINGTON. n. c.

W. s. HAWKFQR. WOOD TURNING MACHINE.

APPLICATION FILED MAY 5,1910.

Patented Sept. 29, 1914.

mm%m

W. S. HAWKER.

WOOD TURNING MACHINE. APPLICATION FILED MAY 5,1910

1,1 1 1,795. Patented Sept. 29, 1914.

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. wILso v s. I-IiAWKER, Fv Barron-onto.

To all whom it may concern; a

Be it I known 7 that. I, WILSON ;S. HAWKER,

a citizen of thepUnited States, residing at Dayton, in! the county of Montgomery and State of ,Ohio; have"inven ted certain new and useful Improvements in VVood-Turning Machines, of which thefollowing is a speci-,

fication;

My invention relates to wood working machinery and particularly to a Wood turn ng machine adapted to produce either straight;

round stock or round stock of Varying diameters.

- The object of the invention is to simplify the structure as well as the meansand mode.

of operation of such machines whereby they will not only be cheapened" in construction to-compensate for variations-in the rough" stock. to be operated upon and further, to automatically center the rough stock irre-,

sp ective ofitscvaried dimensions.

40. p H b p hereinafter described andpset forth in the the tension ofthe feed rollsQ ,Fig. Sis a stantially automatic, easily operated, and unlikely to getout of repairs maybe varied. p a A i A further objectis to providemeans for automatically adjusting thefeeding device A further object is to providdmeans wherebythe machinef may operate upon:

short lengths of stock and whereby such short lengths may be supported at point in proximity to the cutters. With theabove primary and sundry other incidental objects invievv as Willmore fully 1 "-;appear in the specification, the invention consists of the features of construction, .the 'partsyand'combinations thereof and their mode of operation, or] their equivalents, as

claims..." e

Figure 1 is a side elevation of the assem bled machine. V Fig. 2 is a front elevation viewed fromthe rightin Fig.3,1. .Fig. 3 is a. longitudinal vertical section through the :,machine. Figjkis a transverse sectional view atright angles to'that of Fig. 3 and viewed from the right. Fig. 5 is atop plan view ofthe assembled machine. Fig. 6 is a sectionalplan view. Fig; 7 isla detail view partly in section of'themeans for regulating sectional View of the adjustable :master cam for the valuable turningwmechanism. Flg.

is a detail viewof theadjustable support Specification of Letters Patent.

views. I I but will be more efficient n operation, "sub- Y WoonQrUnnmeMAcnmn.

for the idler gear in the drive train of the variable turning mechanism. Fig. 10 is a side-elevation of one of the swinging car ng Wedge of the feed roll spindle bushing.

Fig. 14 is a plan View of the, assembled machine equipped with a turning head for "turning straight stock. Fig. 15 is a perspective view of the interchangeable square sleeve forjthe turning head.

; Like parts are indicated by similar characters of reference throughoutthe several General clescriptz'on.The turning ma- :chine forming the subject matter hereof comprises a revoluble head carrying a plurality of adjustable cutters.

The head is supported 1n bearings upon a main frame in the form ofla casingor pedestal. The crude stock-is introduced into theimachine in the :form of square sticks; which are passed {through the revoluble head and engaged by the cutters. At each side 0f the turning head the stockfisengaged by revolving feed rolls. Thefeed jrolls'are positively driven and so mounted as toswing' to and. from v I PatentedSept.29,1914=. Applidation'fiiedMayS, 1910. Serial No. 559,631. i

each other to compensate for variations in lithe stock. By interengaging gear .teeth upon 3 the feed roll carriers the respective rolls are moved 111111113011 thereby servlng to center the stock irrespectlve of its dlameter.

YVithin the supporting casing or pedestal is containedmeans forreversingthe feed rolls whereby the stock may be driven in either directionithrough the turning head; The

cutter bits upon theturninghead are ad justable 'and means includin g a master cam are provided for adjusting the cutter bits.

while inmotion, thereby enabling the machine to produce Work of varying diame ter. As the turned work emerges from the cutter head it passes through the sanding attachment byvwhich it is givena smooth or finishe'dsurface. "In constructing the chine there is employed a ,main frame or' pedestal'l in the form of a rectangular casing p rovidedwith openings closed by doors 2 by which access may be had to theinterior thereof. $upported on the top of the pedestall isan elevated bearing 8 in which is journaled the sleeve 4 of the turning head.

Variable feed mecham'sm.-Secured to the sleeve 4 of the turning head by screw threads or by other engaging means is a drive-pub ley 5 having formed integral therewith a friction disk 6 having a convex surface.

'Mounted within the casing or pedestal 1 is a cross tree or bracket 7 in which are mounted stationary vertical shafts 8 extending upward to the top of the pedestal.

Slidingly mounted on the vertical shafts 8 is;

an adjustable head 9 carrying therein a horizontal countershaft 10 upon which is slidingly mounted a friction disk 11 spring pressed by a helical spring 12 into contact with the friction disk 6 ofthe drive pulley-5 The friction disk 6 rotating with the pulley 5, which is driven by a belt from the line shafting or other suitable source of power, drives the friction disk 11 in unison therewith. The friction disk 11 is provided with a contact strip 13 of leather or other suitable material and the relative spee'd of the friction disks 11 and 6 depends upon their point of engagement. Mounted in suit able bearings in the pedestal 1 is a vertical adjusting screw 14 engaging the sliding head 9' and carrying a bevel pinion 15 meshing with a similar pinion upon a horizontal countershaft 16 carrying at its extremity a crank'handle 17 by which-means the adjustable head 9 may be raised and lowered on the guiding shafts 8, thereby varying the point of contact between the friction disks 11 and. 6 to and from the periphery 7' of the disk 6.QWhen the adjustable head 9 is lowered whereby the point of contact be tween the friction disks will be adjacent to f carries a bevel pinion 18,meshing with a 1correspond1'ng bevel gear 19 journaled in the head 9 and engaging by a feather and groove connection a vertical revoluble shaft 20. The construction ls such that as the head 9 is raised and lowered the bevel gear 19 will move therewith and will slide upon the'vertical shaft 20 whichit will continue to rotate. At its lower extremitythe vertical shaft 20 carries a bevel pinion 21 which meshes withtwo oppositely disposed bevel gears 22 provided with elongated sleevesjor hubs 23 loosely'journaled on thetransverse shaft 24 provided with suitable bearings 25 and 26 in the mainframe orpedestal. The inner or adjacent faces of the bevel gears v "22 are provided with clutch teeth to be alternately engaged by corresponding teeth I 27 on the sliding clutch member 28 mounted 1 on the transverse shaft 24-and engaged therewith by a spline and groove connection.

.By shifting the clutch member 28 from engagement with the clutch teeth of one bevel gear 22 to engagement with those of the opposite gear 22 the direction of rotation of the transverse shaft 24 maybe re- 3 versed and by moving the clutch'member 28 'to'an intermediate position it will be disengaged with both the bevel gears 22 and the transverse shaft 24 will remain'at rest.

The shaft 24 extends through the side ofthe pedestal 1' and carries a *gear'pinion 29 meshing with an idler gearpinion 30 loosely journaled on the shaft or Stud 16 which idler gear in turn mesheswith two gear' pinions 31 mounted on the extremity of transverse shafts32 located adjacent to the opposite sides of the pedestal 1'. The transverse shafts 32 are provided'with suitable journal boxes 33 secured upon the interior of the pedestal; Each of-the transverse shafts 32 carries two bevel gears 34; whichmesh with corresponding bevel gears 35 on-the lower. extremities of vertical shafts 36 located ad-' jacent to each corner, of the pedestal and provided with bearings in inward extensions 37 formed integral with'thepedestall The integral extensions 37 are provided with a central opening snfliciently large to accom-- modate theshaft 36 and an adjustablebushing 38. The bushing 38 extends into the.

central openingof the extension 37 and conforms to the shaft 36.1Adjusting screws 39 in the sides of the pedestal l'bear upon 3 the bushing 38"and serve to adjust said bushingto compensate for wear. The 'bush-.. ing 38 is provided with a vertical conduit 40 which forms" an oil receiver ';from which suitable ducts lead to the bearing y'of the shaft 36. The relation; of the bevel gears .7

34 on thetransverse parallel shafts 32 with the corresponding pinions35 upon the vertical shafts 36 are such that all of, the v four vertical shafts- 36 will be rotated in unisonin the same directionand with the same speed; It will 'be'readily seenthat by shifting the clutch member 28 intermediate the bevel gears, '22' from" engagement with oneof said gears to engagement with the opposite gear that the direction of rotation of the vertical shafts 36 will be reversed.

In order to shift the clutch member 28 there,

iio

is provided; a ring or collar41 inclosing the clutclrmember 28Iand having opposite vextending arms 42%engagedpwlth reciprocating bars 43 located at. opposite sides of the pedestal and carried on rock arms 44 secured upon transverse shafts 45journalfed in the pedestal 1- at opposite sides thereof. Each of the rock shafts 45 projects "in op-' posite directions beyond the pedestal and each carries a. shifting lever :46. 7 There will thusbe a shifting leverloc'ated on eachside of the machine for the convenience of the" operator. It is obvious that'one lever might be dispensed with and '7 the shifting "of the' .mechanism to .reverse the l direction of the feed shafts accomplishedvfrom oneside of themachineonlly} a i Compensating feed"clem'ce .:lhe vertical shafts 36 extend above the top of the pedes tall .and have journaled thereon swinging feedroll carriers 47. The swinging-carriers 1-7 are shown in detailin Figs. 10 and 11 a and are journaled on theupper extremities :ofthe shafts 36. The lower portion of the swingingcarriers is recessed to form a gear casing 8.- TWithin the gear casing l8 and securedgupon the shaft 3618 a gearpinion 19 meshingf: with ya. corresponding-gear I pinion 50 on the grevoluble stud51'journaled v in thejswinging carrier .L'Fii'The stud 51 carri'es at its upper extremitythe feed roll 52 which is secured to and rotates therewith-.-

-The construction isIsuch-that the rotation Of the vertical shaft'f36, drives the stud 51 and feed roll 52 inunison therewith-by means of the gearsAS) and 50 and the swinging carrier mayjbe oscillated about its journal connection upon the shaft 36 without interferingfwith the rotation of the feed roll. In' order to {provide for the adjustment of the feed rolls by'the oscillation of the swinging carrier; about the shaft 36 and inorder toinsure the movement of the corresponding feed rolls 1I111111S01'l there'is provided on each of the-swinging carriers a "gear segment 53 'concentric with the pivotal a 0. the shaft 36*mo-vesthe' respective feed rolls "connection of the carrier upon-the shaft 86. The gearsegments 53 of each. pa n of sw nging CELI'IlQIS intermesh ng ywith the gearsegment of the correspondings'winging car-. rier as shownin Figs, 5, 7" and; 14. The swinging movement of the swinging car riers about-their'pivotal connection upon to and from the center line or the axis of the work when passing through the 1 machine.

" The interengagement' of the gear segments causes the swinging carriers to move equally whereby the feed rolls'are equidistant from the centerline thereby serving to center the fwork which isjengag'ed between the rolls. "The feed rolls will yieldequallyto coma 1,

pensate' 'for any variation in the diameter of the. work, Sup'ported onafisultable bracket attachedtothe pedestal 1 is a cyl- "indrical'housing '54 within which is located a lwormr engaging the teeth of one of the gearsegments 53 of one of the swinging carriers. The worm 55 may be rotated 'by ahand wheel 56- secured uponft he stem 57 thereof. In "addition to itsrevoluble between the collar 58 upon the worm 55 and a the head of the cylindrical housing 54..

movement the worm 55 is c'apab le of a re- 60 I ciprocatory movement within the cylindri cal housing54 against the tension of a hellcal spring 58 coiled about the stem 57 and The-tension of"the"spring 58 is such'that 1 will tend to keep the swinging carriers and 'feed rolls in theiriclosed position.

However;v upon the feed .rolls' engaging an enlargement in thework or stock the carriers will yield to permit the'passag'e of such large portion against the tensio-n of the spring r258 the'worm 55 reciprocating within the housing 5 1 and compressing the said spring 58. After such enlargedportion of 'the'workor stock has passed the feed rolls :the spring 58will return the swinging carriers and'feed rolls to normal position and will maintain the carriers and feed rolls in condition to impinge the stock or work. *The action of the feed rolls in thus swinging to and from the-turning head facilitates a substantially V-sh a'p'ed, groove to conform towthe square surface of the crude stock while the set of feed rolls at the oiftake side of the turning head are provided with a semicircular groove to conform to the finished work. Inasmuch as there will be 0011-) t siderable weapon the stud 51 carrying the feed rolls means' are provided for compensating for such wearacomprising a split bushing 59 uponthestud, one-half ofwhich bushing is provided with an-"annular wing 60; A-similar split bushing 61 is provided for the journal bearing of the swinging carrier upon thetupperextremity of the shaft- 86; The annular wings 6Qofthe respective split'bushings 59 and 61 extend toward each other and the swinging carrier is provided with an opening for theinsertion of a key 62 intermediate the bearingof the shaft 36 and the stud 51. The. key 623is provided with an inclined groove 63 on eachjside thereof which inclinedgrooves are adapted toengage the annular wings 60 of the respective split bushings 5 9 and 61 and forces said bushings oarrying'said annular wings into close contact with the stud 51 and shaft, 36. The key 62'might be made'of sufficient length to extend somewhat above the swingingcarrier andbe driven down in order to I tighten the respective bearings. However,

in such construction the jarrings incident to the use of the machlne might cause the key to unnecessarily tighten the bearings resulting in the injury thereof. To obviate this the constructionis suchthat the key will *passfto'a limited distance into the swingin'g carrier andbetween the; annular wings of the respective bearings. In order to compensate for wear of theobearings the key 62 is.removed and a strip of packing or paper is laid in the tapered-groove 63 and the. key is returned to place, the packing WithlIl the groove serving. to tighten the respective bearings by forcing the annular wings 60 in opposite directions. r

Supporting cleoices.-.Projecting fromthe cylindrical housing 54 within which is contained the adjusting worm is a lug 64 -having therein an undercut or gibbed slot 65 which slot is adapted to be engaged bysev eral attachments for work of different character. For handling straight rods,the crude.

stock for which is sawed substantially straight and even throughout, supporting wheels or rollers 66 may be engaged with the slotted lug 64, the journal of the wheel or roller 66 being provided with'the head adapted to engage in the gibbedgslot 65 where it is secured by a hand wheel. 67. The supporting Wheel or roller may be adjusted the gibbed slot 65 upon which thereis adapted to ride a sliding inclined block:69. The

' stationary block 68 and the sliding'block 69' the passage of an enlargement of the work groove or gibbed connection.

are preferably interengaged by a tongue and The upper surface of the sliding block 69 is provided wit-ha longitudinal groove 70 shown in Fig. 5-within which the work will ride. A link 171 connects the sliding inclined block 69 with the swinging carrier 47 Whilethe feed rolls are adapted to center the work horizontally the sliding block or support 69 will center the workvertically. When the swing ing carriers are forced outward-to permit or stock due tothe engagement of such en- "largcd portion with the feed rolls, the movement of the carriers will be transmitted through the link 71 to the sliding inclined block 69 which will be pushed down the incline of the stationary block 68 to compen-' sate in a vertical plane for such enlargement of the work or stock. Thus the work will not only be centered in a horizontal plane but also in a vertical plane and the supporting block 69 will be raised and low ered by shifting it up and downjthe incline to compensate foreach'va-riation ofthe material passing between the feed rolls. The compensating support comprises the inclined blocks 68- and 69 and'is interchange able with the revoluble supporting wheel 66. For using stock which varies greatly through irregular'or faultysawingit is -de-' upon the 'discharge'side of the machine when ;the work produced is of substantially equal diameter throughout. However, whenwork .of'variable diameter is being produced the compensating support; is preferably used upon the discharge side of the machine while. .if the stock therefor is very regularly and revoluble roller or wheel may beemployed r sirable tol'employ the compensating support comprising inclined'blocks68 and 69 upon .the intake side of the machine while the evenly sawed the roller 66 may be movable upon'the intake side. There is-also employed with the machine a sanding attachment for giving afinished surface to theiwork which is adapted to be supported upon theilugs64 being interchanged with the supporting devices before described. The turning head employed withthe machine may be either "of a type suitable for turning straight stock in which the cutters are secured in fixed positions or the head may be made of a type suitable for work of" variable diameter in which the adjustment of the-cutters is varied during the operation of the machine to (produce work: of pre-determined form..

The turning headsecuredPto or formed integral with the sleeve 4 and adapted to be driven by the pulley 5 comprises a circular member72 from the faceofwhich pro jects a plurality of lugs '73 flush with, the periphery of the circular member72. I Eccentrically pivoted uponthe circular plate" T2 are aplurality of cutter supports74'havmg extensions 75. normally resting upon the lugs 73. In each of the cutter supports 74 is an opening 'through which projects a stud 77 carrying a retaining nut by which the I cutter supports are retained in position. The cutter supports are capable of anoscillation abou'ttheir eccentricpivotal connection .78.

This turning head construction is fully de scribed in my prior Patent No. 949,765.

Gutter bite-The cutter. bits 90 are adjustably secured upon the supporting members 74 by clamping nuts 91. The cutter bits 90 comprise a'member fiat throughout the greater portio'nz'of its extent but upturned or curved at its'forward edge that is, theedge first engagingthe work. Each cutter is provided with a slot 92 through which projects the stud of the clamping nut 91 whereby the bit is adjustable longitudinally upon the supporting member 74 to compensate for wear. The cutting edge of the bit is somewhat L-shaped, beingsubstantially straight-throughout the greater; portion of-its extentand provided with a portion 93 extending somewhat beyond the main portion of the cuttingedge and bearing upon the Work. The portion 93 of the bit projects tangentiallyto the finished-Work; the four cutters supporting the work at diametrically opposite points: The portion 93 thereby forms a variable throatf within which a the workis supportedand which the. work. is

"centered; This variable throat being formed by the extensions 93 integralwith the cutter bits variesin unisonfth'erewith and having. but four points of contactwith the work,' there will be but little fricti'on or torsional strain. The under-side ofthe. portion 93 of the b1t is ground off slightlyto-provide clear- Vance. This clearance is so slightas to be hardly perceptible yet it is quite important andin practice; has been, found to be almost equivalent to the'difierence between success" and failure; By means of the extensions 93 forming arectangular orifice orthroat for a support of the workwhich is variable with the adjustment of the cutters, the workis at all .times supported at -a point adjacent to theflpoint of operation'of the cutters and regardless of thevaryingdiameter of the finished work. For operatlng on certain grades or" stock and producing certainresults itis desirable that the cutter bits be re versed. The crude stock is adapted to be passed through the turning head before "being engaged by the cutter vbits. I HOWGVGIQ it is sometimes desirable to reverse the opera tion and pass the crude stock through the forward side of the. turning head, the finished gwork passingthrough thehead in Which caSe' the cutterbits may be reversed upon their pivotalsupports thereby bringing the supporting extension 93 of the bit adj acent'to the iacegof the turning head and the curved edgeor working side.of the bit at the side removedfrom theiturning head. Such changes involve. merely-the transposingof.

j i the ,cutterbits. It is thought'thatfit will be clearance obtained-in the ordinaryl solid smaller than the bore obvious without the "necessity of separate. illustrations. f The clearance on the backs or the four opposing cutterscauses the'necessary freedom for therotation of the head and cutters about-the turned stock while at thesametimesupporting it. Thisclearancej in the rectangular orifice or supporting throat. corresponds in principle with the turning head or chuck in common use by-fsetting the cutting edges of-the cutter: inward toward the center to turn thestock a trifle of the chuck as 'is the usual custom;

Supporting meahs for" small 0; short stock-'aWhen turning work of very small diameter thecrude stock is liableto be twisted jor broken'by the torsional strain unless 1 supported to a point adj acentto the working pointofthecutter bitsf In order to provide for such support for the stoclr'lthereare provided interchangeable, mandrels; 111 shown in dejtailjin Fig. 27, having rectangularopenings"112 centrallytherein of a size approxiw mately equal to the size ofthejjcrude stock.

' tobejoperated upon. The mandrel 111jis secured by being clamped in a a support 113 mounted" on the-top ofthe pedestal. The

support 113 also forms an inclosed housing :for the driven friction disk 11.

The mandrel 111 is secured therein by ayoke 114 engaged by nuts 115.- The mandrel 111 projects through, the 'sleeve 4 of the turning head to a point. adjacent to the cutters as shown in Fig. 3. The mandrel 111 is held stationary while the turning head revolves about it. The crude, or. squared stock is passed through the mandrel 111 to the cuttersand the mandrel supports the stock and prevents it rotating with'the cutters thereby preventing the stock from twisting and breaking, due to the torsional strain of the cutters operating thereon. The interchange- .able mandrels are all of equal external dia1neter whereby they Will fit the interior of the sleeve 4: of thecutter head and the mandrel support 113 but different mandrels may have central squared openings of different sizes to accommodate different sizes of stock. It

is also desirable under somelcircumstances,

to employ. the mandrel for. supporting the finished workwhen the cutters are used in reversed positionas before mentioned in which case the mandrelbecomes'a support supplementalto the eXtensions 93 of the cut- Whilethe turning mechanism hereinbe fore described is especially adapted to turningwork of variable diameters it is obvious that-a turning head having stationary cutters thereon for turning rods of equal diameter throughoutzmay be substituted for the variableturning mechanism: Such a turn-' ging .head is shown in Fig. 14 in which the head comprises a fiat plate or base 129 upon which are, 'stationarily secured the cutter supports 130 carrying cutter bits 131 which are identical with the l cutter supports 73 and the cutter-bits v except that such parts are stationarilys'ecured' upon the base plate 129.; [The-cutter supports and cutter bits may be adjustable thereon but are not variable while the-machine isoperating butflare adjusted to a given size of rod in'zwhich adj ustment they are secured. Such a head may be used interchangeably with the variable .shape turning mechanism without interferug with the remainder of the machine.

1 Having thus. described my invention I claims I a 1. In a turning machine, intermeshing gear sectors, feed rolls eccentrically carried by the sectors whereby an oscillation ofthe sectors will cause the rolls to move to and from each other, means. formanually adjusting the sectors to adjust the feed rolls to predeterminednormal relation one with the other, and'yielding means tending to maintain thesectors in their predetermined ad-- justed positions against the tension of which the sectors may move from. such predetermined adjustedpositionsand adapted to re- .turn the sectors. to such predetermined adjusted positions after each movement there a plurality of'feed rolls, adapted to rotate at uniform rates of speed, variable-driving connections between the turning head and the rolls comprising two friction disksrotating in parallel planes with their adjacent faces in contact one with the other, a sliding head. upon which one of the friction disks is carried, driving connections carried by said sliding head adapted to maintain operative connection with the feed rolls throughout all positions of adjustment, the sliding movement of said head being adapted to cause the disks to engage one with the other at different distances from the center of rotation there-by varying the relative rate of rotation of the turning head and feed rolls.

- 8. In a turning machine, a main frame, a

turning head-and a drive pulley mounted thereon, a friction disk revoluble with the pulley, guides within said frame, a movable head slidingly mounted on said guides, a

5 driven friction disk carried by said head, a

counter shaft carried in said head, a bevel pinion'carried by said shaft and a second pinion carried by said head with which the first pinion meshes, a revoluble shaft journaled in the main frame driven by the second mentioned and on which the pinion is longitudinallymovable upon adjustment of v the sliding head, a plurality of feed rolls, driving'connections between the; revoluble shaft and feed rolls, the speed of such rolls being varied by the adjustment of the slid ing head.

4C. In a turning machine, a main frame, a turning head and a drive pulley mounted 40 thereon, a friction disk revoluble with the pulley, guides within said frame, a movable head slidingly mountedon said guides, a

driven friction disk carried by said head, means for-shifting said head and thereby varying the engaging point of the friction disks, a transverse drive shaft, two oppositely disposed gears loosely journaled' on said shaft, an intermediate driving pinion meshing with both said gears, driving con- 50 nections between the driven friction disk and said driving pinion, atshiftabl'e clutch adapted to engage either of the gears with the drive shaft, whereby the direction of rotation of the shaft may be'reversed by alter nately engaging the said gears therewith, a

plurality of revoluble feed rolls and-driving connections between the feed rolls and drive shaft. 5. In a turning machine, a ma n frame, a

" turning head anda drive pulleymountedthereon, a friction diskhrevoluble with the pulley, guides within said frame, a movable head slidingly mounted on said guides, a

driven friction disk carried by said head, 5- the point of engagement of the friction disks 'driven by said drive shaft.

'tion adapted =to positively adjust the-feed and thereby the relative speedof thel disks being varied by "the adjustmentbf' the sl ding head, a' drive shaft, reversible driving connections between the drlven fllCtlOIl disk and drive shaft and a plurality of feed rolls s 3 6. In a turning machine, a main frame, a turning head and: a drive pulley mounted thereon, a plurality of revoluble feed rolls, Y drive mechanism therefor between the drive pulley and feed rolls, including two relatively adjustable friction disks and reversible driving gears whereby the rolls may be driven in either direction at variablerates V ofspeed .80 7. In a'turning machine, a main frame, a turning head and a drive pulley mounted thereon, a plurality of-revoluble feedrolls, drive mechanism therefor between the drive pulley and feed rolls, including amovable clutch member whereby the direction of rotation of the feed rolls may be reversed, parallel rock shaftsmou'nted'in the frame,

rock arms" on said shafts, reciprocating bars actuated by the rock arms and in turn actu I ating the movable clutch member, operating levers on each of the rock shafts and at .op--

positesides of the machine whereby the-rotation of the feed rolls may be reversed from either side ofthe machine by the ioperation of either lever.

8. In a turning-machine, a plurality of feed rolls, swinging carriers in which the rolls are journaled, intermeshing gear seg ments on corresponding swinging carrierswhereby the carriershwill swing-1n unison, and an adjusting worm engaging the segment of one of the carriers and by'its rotarolls to and from each. other,

9. In a turning machine aplurality:of feed rolls,- swing ing carriers in which the rolls arejo-urnaled, intermeshing gear seg-j ments on "correspond-ing swinging carriers 1 whereby the carrlerslwlll swing 1n un1son,

a reciprocatory adj-usting wormengaging a segment of one of said carriers, a spring against the tension- I of which the worm is adapted to reciprocate, 'wherebythezrolls may automatically adjust themselves to ir "1 1 s regularities I in the workpassing between 10. In a turning machine, a -main frame,

a turning head, a' plurality of feed rolls arranged in pairs, swingingIca-rriers in which 12 0 the" rolls are: journaledfrevoluble drive shafts on which thes'winging carriers are journaled, gears carried on said shafts',*in-' termeshing gear pinions lca'frried' on the roll trunnions'andmeshin'g with the first men tioned gears, intermeshing gear segments carried the corresponding swinging carriers,meanstending to hold the rolls'in engagement with the'work but'permitting the rolls to yield for irregularities in the work passing between the rolls, and means for positively adjusting the position of the rolls unison, areciprocating support for the work,

an inclined surface on which the support rides, a link connecting the support andswinging carriers whereby when the carriers [swing outward, the reciprocating support 15 will move down the inclined surface and away from the axial line of the heaohand when the rolls approach each other the support will move up theincline and approach the axial line of the head in unison with the rolls;

In testimony whereof, I have hereunto set my hand this 26th day of April, A. D. 1910.

. H WILSON sHAW ER.

Witnesses:

Amman MoCRAY,

F. L.WAI ;KER,

3 Copies of this patent may. be obtained for five cents eachyby addressing the Commissioner of Patents,

. y i Washington, D. G. e i i i

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