US1343981A - Wood sanding or polishing machine - Google Patents

Description

. I. M. NASH.l WOOD SANDING 0R POLISHING MACHINE.

APPLICATIOIl FILII') NOV- I9, |917.

Patented June 22, 1920.

5 SHEETS- SHEET I.

I II

J. M. NASH. woon sANmNG 0H- PvUs-.LHNG mor-HNE,

APPLICATION .FILED NOV. I9, |917.

I. M. NASH.

l WOOD SANDiNGy 0R POLISHING MACHINE.

APPL'ICATIQM FILED Nov.19,1917.

1 ,343,98 1 Patented June 22, 1920.

5 SHEETS-SHEET 3.

f s s 5 i J. M. NASH.

woon SANDING 0R PoLlsHlNG MACHINE.

APPLICATION FILED NOV. 19, 1917.

, Patented June 22, 1920.

5 SHEETS-SHEET 4.

J. M. NASH. WOOD SANDNq 0R POLISHING MACHINE. APPLICATxoN FILED Nov.19,19u.

1,348,98 1. Paten/wd June 22, 1920.

5 SHEETS-SHEET 5.

(l ttoz n: 116

JOHN M. NASH, yOF VAUWATOSA, WISCONSIN.

WOOD SANDING OR POLISHING MACHINE.

specification ofreces Patent. interim-er1 June se, 1920.

Application led `Nrn/*einher 19, 1917. Serial No. 202,679.

To ZZ i12/0m t may concern I ;le it known that l, JOHNy M. Nasr-r, a citizen oi' the United "States, residing at W auivatosa, county of Milwaukee,- and `State of lilisconsin, have `invented new and useful improvements in lNood Sanding or Polishing Machines,of Which-the following is a specification. y y l My invention relates to improvementsfin Wood sanding or polishino' machines, and pertains especially to machines of the lgeneral type disclosed in my former Patent ito'll, dated June 21st, 1901i, for a machine for reducing wood or other materials. Prior to the date` of my former patent, the common practice was to present ythe stock. c., the Wooden `surface to be polished), to a rapidly moving `sanding belt, the stock being turned orjshiiitedin a manner to present all sides or vsurfaces thereof in contact with the belt at some period during the progress of the `Work. l`liemachine disclosed in myV former patent was peculiarly adapted forl finishing circular and cylindrical' surfaces, it being posf sible to revolve around articles rapidly in Contact with relatively stationary abradsurface, and in such cases, an advantage is secured owing to the fact that the stay, or relatively stationary, abrading ce may have its contour varied along ie parallel with the axisof the revolving stoclrv and can thus beinade to lit anilar grooves and bulging portions in the stoel-r with substantiallyequal pressure at present invention contemplates revolving it slowly and intermittingly and presenting it successively to a set of sandingrbelts durinsr the revolution of the turret.

One object oi my invention is to provideL means whereby the operation of each sandvolving the stock carried bythe turret, my

ing belt uponvthe stock may be commenced and yterminated along predetermined lines along the surface of thestoelr. In this manner, the u'orlr of one sanding belt may ei;- tend beyond the iield of 'operations of another belt, or if desired, the degree of abrasionmay be varied along different longitudinally extending zones in the surface of the stock, or abrasionomitted altogether along certain lines or strips of surface.

T his feature of my invention 4is peculiarly adapted for use in connection with spoke sanding machines for the reason that spolres are frequently of a generallyoval or elliptical iorm, with flattened sides converging to a comparatively sharp edge, which, if ln'escntedr toy the' abrading surfaces iny the ordinary manner, 'would bey rapidly cutv Way, thereby destroying the design by varying the contour of the spolre and rounding off the angularportions'thereol.

By my invention, l am enabled to co1n- VInence the abrading operation at one side ofthe .apex oi an angleor substantial'.7 at the apex, and slowly revolve the spolre to carry the apex away from the belt and return it toward the belt on the opposite side, thespoke having, in the mean time,fper formed nearly a complete revolution Without bringing the apex of the angle into edge contact with the sanding belt. wWhere there is more than one edge or apex, l am enabled to polish an intermediate portion of the spoke incontact With one belt, re-

`move it, turn it and presentanother inter mediate surface to the next belt, etc.

By thus .removing material ironi tho spoke at each side of the 'oncles l am enabled to utilize the sanding belts to increase the sharpness of lonL tudinally extending edges or angles uponspolres having diamond shaped, shaped, or oval designs.

A further object of .my invention is to provide eiiicient means foi-feeding spolres to a revolving turret and automatically engaging them between chucks ca 1ried by the turret.

A further objectV is to provide improved means for adjusting `thetension of the sanding belts, and positioning them in accordance with the :requirements of any given class of Work.

A still further Objectis to provide means for increasing the elli "enc/y ofthe machine by preventing the dus, and sand from interfering with its operation, and also by providing means whereby access may be readily obtained to the working parts ot the machine.

1n the drawings- Figure 1 is a front elevation of a spoke sanding machine embodying my invention.

Fig. 2 is a side elevation of the same as viewed from the right in Fig. 1 with the right hand turret removed and showing the supporting shaft in cross section.

Fig. 3 is a sectional view drawn on line 3-3 of Fig. 1.

Fig. a is an central horizontal sectional view of the parts illustrated in Fig. 3.

Fig. 5 is a front elevation on an enlarged scale, showing the feedway and associated parts.

Fig. 6 is a view'ot the same in side elevation.

Fig. 7 is a detail end view oi' one of the spoke engaging chucks.

Fig. 8 is a side view of the same, partly in longitudinal section.

Fig 9 is a detail view in longitudinal section, showing a fragment of one of the spring actuated, spoke engaging plungers and its associated bearing member.

Fig. 10 is an end view of the same.

Figs. 11 and 19; are detail views illustrating means :tor utilizing the belt tighteners to control the action oi' the sanding belt.

FiO'. 13 is a sectional view on line 13-13 of Fig. 3.

Fig. 14: is a sectional view on line 14T-1st of Fig. G.

Fig. 15 is a conventional illustration ot' the progressive movement of a spoke along the working portions oi thev belt.

Fig. 16 is a detail view in side elevation showing the head stock and spoke receiving hammock. Y

Like parts are identified by the same'reference characters throughout the several views.

The turret and spoke carry/ing spindles.

A main shalt 1, mounted in suitable trame bearings at LZ and 3, supports the head stock and tail stock members ot' the turret these members rotating with the shaft. The head stock member comprises a set oiC wheels 6 and 7 connected at intervals by chuck supporting spindles S having spoke engaging chucks 9 at their inner ends and sprocket wheels 10 at their outer ends. rFliese sprocket wheels revolve with the head stock within a relatively stationary rim 12 carried by a disk 1 'ihe chuck 9 is best illustrated in Figs. 7 and S. It is provided with a concavely tapered socket 17 in its inner face having a set of V shaped ribs or blades 18 extending along the conically tapered surfaces in planes radiating from the axis of the supporting shaft 8. The end ot the spoke received by this chuck is securely held against independent rotation by these blades 1S which bite into the wood of which the spoke is formed under pressure exerted by the spring actuated tail stock spindles as hereinafter explained.

Rotary movement is imparted to the chucks 9 from a set of relatively stationary gear teeth 20. These teeth are preferably in the form oi' projecting pins or studs carried by segmental flanges 21 connected with the stationary disk 13 underneath the rim 12 of said disk. The teeth of the pinions 1() extend betwen these pins or studs 20, whereby, when the turret is revolved, the pinions having teeth-in mesh with the teeth or pins 2O will be slowly rotated, this rotary movement, of course, being transmitted to the chuck 9 and to the spokes engaged by said chucks. The rotary motion will continue :trom one end of each segmental set or row of pins 20 to the other end thereof, the degree ot rotation being thus determined by the number or' such pins. The rotation ot any given chuck and its engaged spoke ceases when the pinion passes out of engagement with the pins on one segmental flange 21, this rotation being resumed when the pinion is brought into mesh with the pins or teeth 2O of the next segmental llange 21.

To prevent accidental rotation of a chuck when its associated pinion moves out of mesh with the pins on one of the segmental flanges 21, the hubs 23 of the pinions 10 are squared and adapted to travel along the arcuate surface ot' a flange 24 carried by a bracket 25 secured to the disk 13 as best shown in Fig. 11. One flat surface of the squared end of pinion hub Q3 will travel in substantial contact with the arcuate flange 24 or' one of the brackets 25 in each space between successive sets of actuating pins or teeth 20, and these fiat surfaces of the hub 23 are so positioned With reference to the teeth of the pinion, that the pinion will be held without movement after passing out ot' mesh with one set oi' pins and its teeth presented to the pins of the next set in proper position tofenter the spaces between them to effect exact-ly the degree of spoke rotation required.

By mounting the pins or teeth 20 upon segmental members 21, which are detach ably connected by bolts 26 with the disk 13, 1 am enabled to remove these segmental .iembers and substitute other similar members having a different number of pins in accordance with the re uirements for spokes of dilerent types. Y rackets 25, having arcuate bearing flanges 9.11 of differing lengths, may also be provided, whereby the length of the bearing'flanges 23 may be varied in inverse proportion of the length of the toothed segments.

The tail'stockwheels or holders 27 and 28, spring actuated dead or non-rotatable spin# dles 29, andthe' spindle actuating rollersBO connected with the spindle by means ot ears or screws 3l extending through slots 32 in the bearing sleeves 33 carried by the wheeler holder 27, are similar in'structure and arrangement to the corresponding parts as disclosed in my former patent, except that 1 have found that the dead spindles, such as are shown in my -former patent, tend to become clogged in the bearings 33, owing to quantities of wood liber from the spokes and sand from the belts entering these bearings throughthe slots 32, and' have discovered that, by providing longitudinal grooves in the portions ot the spindles which are received in these bearings `d3, the dust and grit will be received in the grooves and pushed out longitudinally, thereby preventing any tendency ct the spindle to become bound or iXed in position in the bearing by the products of abrasion. Y

Vfhis is an exceedingly important feature ot my present invention, since it was necessary, heretotore,eto frequently stop the machine for the purpose of cleaning these'bearings whenever the spindles became clogged to such an extent that they would notrespond to the pressure of the springs 86. 1t -will be understood that the spindles-29are retracted when the rollersy 30 are brought into vcontact with the inclined tace 39 of the bracket e0, this movement permitting a discharge ot the spoke from its engagement Yetween chuck 9 and the point bearing end ot' spindle 29, and also'permitting a subsequent delivery of another spoke between the chuck and retracted spindle 29 before roller 30 p asses out oi engagement with the bracket 4:0 and allows spring 36 to move spindle 29 into spoke gripping position.

Spoke feeding devices.

l have also provided means for 'feeding spokes to the machine. The arm el of the tail stock slide i5 carriesa slide bracket 11G having slots e7 adapted to permit the br cket to be adjusted transversely of the `machine and secured in various positionsby clamping bolts i9 and 50. Vertically mov`- able slides 52 are socketed in upwardly proj ecting portions 53 of slide L6 and the slides 52 are provided with grooves 1n which clamping screws 55 are adapted to engage, thereby permitting a vertical adjustment of' slides 32. These vertically movable slides 52 support a set of inclined bars 59 and 60, to the end of which, brackets Gl are attached in a position to serve as connecting members, whereby the bars and GO may be secured to the upper ends or" the slides 52 by a set of clamping bolts/62 and 63. The connecting members or brackets are provided with slots (Se through which the bolts 63 pass, thereby permitting ay variationof the angleof inclination ofthe bars 59 and 60. These bars andGO constitute supporting parts of an inclined feedway down which the spokes S are `successively ted into position to be receivedbetween successive sets'of live spindles ano retractedfdead spindles, each dead spindle being, of course, released from retractedposition uponcoming into alinement with the presented spoke, f

Ilhe spokes in `the feedway are longitudinallypositioned by end plates and`71. The plate 70 is adjustably connected with the inclined ybar 59 by a transversely disposed slide bar 73 adapted to be secured in various positions of adjustment by clamping set screwl 74. rlhe plate `7l is provided with supporting arms 75 which may be riveted or otherwise directly secured to the inclined bar 60.

' `With'tliis construction, the teedway may be adapted for spokes 01": differing length, the plate 70 being moved inwardly toward the plate 71 when short spokes are to be fed and moved outwardly when longer` spokes are to be delivered to the machine. Similarly the tail stock slide sl may be adjusted t 'ansversely along the bed 77, (Fig. l), by means of the hand wheel 7 8,' rshaft 79 bevel gears S0, and adjusting screw shaft 81, the latter having threaded engagement with a depending arm 82 carried by tail stock slide t.y After the feedway plate 70 has been adjusted in accordance with the length ofthe spokes to be fed to theinachine, Slidell@ may be` adjusted to so position the feedway that the lower spoke thereon may be properly presented between the chuck 9 and the dead spindle 29 when the spindles arrive in a position to receive such spoke, the dead spindle being also simultaneously released by the bracket Ll0. The dead spindle is thereupon driven by its spring into engagement with the tenon of the spoke,"thejioot ot the spoke being thus forced* into the chuck 9 carried by the opposing live spindle. 7 l

The lower spoke "on thefeedway is sup ported by a cross bar 85. In Fig. G, these yspokes are shown by dotted lines mounted on the slideway with converging sides projecting upwardly forming a comparatively sharp angle at 87. By uniformly placing the spokes upon the slideway in this position, they will be heldin `such position by the toot portions, the latter being rectangulaiyin cross section. These foot portions, in lmoving' down the slideway, pass yunderneath a guide shoe S8 which overhangs the bar 60 andis supported from the `bar by an arm 91 secured to the'under surface of the bar and with which the shoe is adjustably connected by a set scre.T 92 ex tending` through a slot 93 in a flange 94 dependingfrom the shoe 88. .The slot 93 is curved and the upper margin of the shoe is also curved upwardly, the intermediate portions of the shoe between its upper and lower margins being spaced from the bar 60 in substantial correspondence with the thickness of the foot portion of the spoke. Therefore the spokes placed in this feedway will be guided and positioned by the shoe in passing downwardly to the cross bar stop S5. The shoe also prevents the spokes from being dislodged or disengaged by the resulting shock when the spring actuated dead spindle engages the tenen of the presented spoke anc drives the spoke laterally into engagement with the chuck 9. This shock and the movement of the remaining spokes resulting from the shifting of the lower spoke into engagement with the chuck 9 is most eileotive for a disarrangement of the spokes at about the position occupied by the shoe 8S as shown in Fig. 6. yThe third, fourth, and iifth spokes above the one enga ged by the spindle are the only ones which are likely to be dislodged or disarranged by the shocks transmitted from the bottom spoke of the series. Therefore by locating the guide shoe at this point, 1 am enabled to counteract such tendency and to also ef fectively control the downward feed movements of the spokes in the slideway when the lower spoke is lifted and removed by the turret.

Spoke removing mcchfmz'sc'n.

A set of inclined knock out bars 100 are secured to the upwardly projecting portion of slide 46 at 101. Arms 102 on these bars are adapted to support them at the proper inclination. The lower ends of these bars 100 extend across the path of the spokes carried by the revolving' turret, but they cross the path of the spokes in a plane above the level at which the upwardly moving dead spindles 29 are retracted by having their rollers 30 brought into contact with the inclined face 39 of bracket 40. The weight of the spokes will normally cause it to drop by gravity into a chute 105 as soon as the dead spindle has been retracted from gripping position, but if the chuck plates 1S tend to retain the spoke, the latter will be dislodged therefrom on coming in contact with these inclined knock out plates 100.

The spokes discharged from the turret- After being engaged by the spindles and removedy from the feedway, each spoke is carried upwardly by the revolution of the turret into contact with the sanding belt 110. This belt is a narrow belt and is used for sanding or polishing theI lilet of the spoke. This belt 110 runs over end pulleys 111 and 112 respectively and also over an intermediate positioning pulley 113, whereby the working portion of the belt between this pulley 113 and pulley 111 is held in proper position for operation upon the filet of the'spoke. A tension pulley 114 is supported by lever 115 having a counterweight 116, whereby the pulley 114 is pushed upwardly against the belt 110 on the return side. VAn adjusting screw 117 is also employed to regulate the tension of the belt,

pulley 111 being supported from the main belt supporting frame -120 by longitudinally adjustable arms 121.

The spoke is rotated while in ,contact with this belt by the upper set or segmental row or teeth 20. The sanding belt is driven from any suitable source of power, such as an overhead shaft, by means of a pulley 122 ruiming over pulley 123.

After the spoke has been carried out 0f contact with the filet sanding belt 110, it is presented to a sanding belt 130 traveling over pulley 131 and idle pulleys 132 and 133. Pulley 131 is driven by belt 135 and pulley 136. The working portion of this belt is the portion traveling between pulleys 132 and 133, the spoke being presented by the turret to this belt in an exact predetermined position, and then partially or Wholly r0- tated while in contact with the belt in accordance with the requirements of the sanding operation to be performed, the degree of rotation depending, of course, upon lthe number' of pins 20 in the segmental row at the rear side of the machine. This belt is preferably provided with a rough abrading surface, whereby the surface of the spoke maybe roughly contoured in accordance with the required design. 135 is a tension pulley or roller, the pressure of which is determined by the countcrweight 136.

Pulleys132 and 133 are supported by arms 140 and 141 respectively, each of these arms being pivoted to the frame at 143 and adjustably secured thereto by clamping screws 144 operating through curved slots 145 in the supporting frame, whereby'the pulleys 132 and 133 maybe adjusted forwardly or backwardly with reference to the turret. thereby varying the length of time that the spoke will be in contact with the belt. lVhen the number of pins 20 is varied, these pulleys will also preferably be adjusted so that the spoke will only be in contact with the belt while it is being rotated.

The continued rotation of the turret carries each spoke from the eld of operation ,of the belt 130 and presents it to a finishing belt 150 which runs over the end pulleys 152 and 153,and anmintermediate pulley 151, the operating` portion of the belt, beingthat between pulxley 153 and pulleyv 15415. rl`his belt being employed for finishing purposes, Will. have a comparatively smooth surface, die., a surface coated with fine sand. Its operation Will-.be similar to that of belt 130, and its tension isregulated by a tension roller 156 supported by lever 157` havingy a counteriveight f158.

In F ig. 11, I have illustrated means whereby the tendency of a belt to shift transversely upon its supporting and actuatf ing pulleys may be corrected. The contour of the spoke is frequently such as to cause the belt to shift upon or overthe pulleys. Forexample, a tapered spoke will tend to crowd the belt toward the smaller' end of the spoke. This tendency can be counteracted by employing a belt tightener pulley of the type'shoivn in Fig. 11 wherein ya pulley 16() is mounted upon an axle 161. The portion of which Within the `pulley is inclined with reference to a portion 163 which is socketed in the supporting lever` `Aside from the sanding belts, the parts of the machine vrequiring most frequent alteration, either for repair lor adjustment, are contained Within thefrim` 12 of the head plate or disk 13. Therefore to make access to these yparts convenient, Ifmake the head stoek frame 170 longitudinally adjustable upon the bed 77, and actuate it by means of a hand'vvheel 171l through'bevel gears 172, and adjusting screivshaft 173; By moving the head stock to the' right' in Fig;` 1, the spindles and their operating'pinions 10 may be withdrawn from underneath rthe rim 12. The latter is supported: from ',thefbed by standards 175 and vclamping bolts 176 which pass thrmigh slots 177 and securethis head plate or disk 13,inr position. By removing these bolts 176` afterthe pinions have been withdrawn 'from Within the rim`v12, this disk and the rim may be lifted and removed, whereby access to the head stock from both sides will be permitted. The diskis provided with a notch or recess 180 extending from itsv center downwardly through the rim on the under side, whereby this head disk 13 may be removed vertically Without disturbing the supporting shaft 1. The removal ofthe head 'disk permits 'access `to the pinions l() and pins 20, whereby the number of ins in an iven set ma be chanvedvat j v i n pleasure.

It will be observed that the working portio-nsr of the sanding belts normally tend to extend along a line tangent to a circle which is slightly less in diameter than that along Which the spokes travel. under the pressure of thespokes thereon and this pressure increases until the spoke reaches the central Working portion ofthe belt, after which, it diminishes.

By properly arranging the pinion actuating projections 20, I am able to complete the revolution of the spoke'eitlier by presenting its edge or angle't'o the sandingbelt at a pointY Where thebelt ivill operate under light pressure, or in cases Where asharp angle or edgeis vto be formed upon the spoke,

The belts 'yield it may be revolved incontact With the sandf ing belt vin such a mannerthat, as this edge or angle relatively approaches the belt, contact ofthe spoke witlrthe belt Will cease entirelyL and the axial rotation of the spoke may then be completed to a point Where the other side of the anglevvill be presented to ther-succeeding belt. In this manner, it is possible to avoid any abrading` operation at the apex ofthe angle While providing for abrasion on each side thereof with light pressurein close proximity to such apex".

In the construction illustrated, there yare fourteen projectionsor pins 20 in the segmental member 21v associated with the upper or fillet sanding belt. The saine number of projections are associated with the rough sanding belt 130, Whereas the smooth sand- Ving belt or builing belt 150 may, with advantage, be operated over'the entire surface of the spoke, including ,the edge, and I have therefore provided seventeen pins or projections 20, this being the number required to completely rotate'the spoke.

It ivilhfof course, be V,understood that, Where the spoke isnot completely rotated by Ythe projections Q0, suchrotation Will be made complete when the'corner of the squared end of pinion hub 23 strikes the end of theadjacent arcuate flange' 24, it being necessary that the flat surface of the hub be substantially parallel ivith the opposing surface yof bolts 176,`these"bolts passing through the slots 177, in the head piece, as shown ink Fig.

3. In this manner, vthe rotation of the spokes carried by the turret may be exactly vtimed with reference to the intervals during which they are in Contact with the sanding belt.

portions of the work holders and prevent the latter from rotating while travelingfrom one set et segmental projections tothe next.

8. Inv a wood polishing machine, the combination ot a revoluble turretprovidedwith spoke holders flattened their outer ents and having actuating'pinions, a relatively stationary head provided with segmental rows oit projections adapted to engage and actuate the pinions vwhen. the turret is rotated, and ini'ermediate segmental bearing surfaces adapted to receive the -l'lattenedportions ot the work holders and prevent the latter from rotating while traveling from one set ot segmental projections to the next, said projections being removable and adapted to be increased or diminished in number in accordance with the requirements oit the work.

9.v In a wood polishing machine, the combination of a revoluble turret provided with an annular series or work engaging chucks, and a corresponding series of spring actuated, idle spindles, each adapted to engage the work between it and'one oit said chucks and each having a longitudinally7 grooved end portion adapted to slide in a turret bearing, said turret being provided with a spindle su `)porting bearing member.

l0. ln a wood polishing machine, a reci procatory workengaging, idle spindleshaving a longitudinally grooved gudgeon.

ll. In a wood polishing machine, a reciprocatory work engaging, idle spindle having a longitudinally grooved gudgeon, in combination with asupporting turret wheel having'- slotted bearing apertures to receive seid gudgeon, and a spindle actuating projection Aconnected with the gudgeon and adapted to slide in the bearing` member slot.

l2. In a wood polishing machine, a feedway comprising an inclined spoke support, adapted to hold spokes thereontransversely to the line ot feed, and with the same` side uniformly up, in combination with inclined relatively adjustable plates7 constituting guiding walls for the ends of the spokes, and

n work stop located along thelower side margin etthe spoke support-below thelower endsoi the end plates, whereby the ends of the lower spoke may be exposed in a position tor engagement by a traveling chuck when such Yspoke is in contact with said stop. y

Yi3; ln a wood polishing machine having a revoluble werk .carrying turret provided with a series of work engaging chucks, and cooperating, spring actuated, work engaging spindles, the combinationwith the turret, of an inclined eedway along which thework may be delivered between the spring actuated members and chucks, means for permitting universal. adjustment of said iteedway, clamping devices for holding the feedway in various desired positions ot adjustment,

-ting universal adjustment of said feedway,

clamping devices for holding the feedway in various desired positions of adjustment, means for holding the successive pieces of work in parallel positions on the feedway, a stop at the lower end of the feedway adapted to hold one of the pieces in position for delivery to the turret, together with an inclined knock out member loosely suspended beneath the ieedway, and means for retractmg the n spring actuated, work engaging members as the work approaches said knock out member.

l5. In a wood polishing-1nacliiinethecombination of a revoluble turret provided with an annular series of spoke engaging chucks eachhavine a conically tapered socket to receive the foot et the spoke, and a set of radial guide ribs projecting from the tapered walls oi sai d socket and adapted to `facilitate centering the foot of the spoke in the chuck.

ln a wood polishing machine, the combination of a turret provided with an annular series oit work engaging chucks each having a tapered socketr provided with edged guide ribs extending radially along diverging walls elf the socket and adal'itedto direct the work toward the center of the clnuik, an opposing, spring actuated, work engaging member carried by the turret, means for retracting` sai member at one stage of turret rotation, and means toi-.feeding work between the retracted member and the chuck, said retracted member being adapted to automatically engage the work when released rom the retractive means by the continued rotation of the turret, whereby the 'ork uriven torcibly into the chuck socket. 17. ln a wood polishing machine, the com-. binationwith a polishing belt, et a revoluble turret provided lwith annular sericsoilfv work holders adapted to carry the werk into and 'out ot contact with'said belt, a belt tightally movable tail stock,

sible feedwa y slide having` one side thereof adjustable in correspondence with the axial adjustment of the tail stock, whereby work of differing length may be accommodated.

19. In a wood polishing machine, the combination of a work holding turret provided with an axially movable tail stock, a polishing belt in operative relation to work carried by said turret, an extensible feedway slide having one side thereof adjustable in correspondence with the axial adjustment of the tail stock, whereby work of differing length may be accommodated, together with means for bodily adjusting the feed slide along the axis of the turret, and additional means for adjusting the same vertically.

20. In a wood polishing machine, the combination of a work holding turret provided with an axially movable tail stock, a polishing belt in operative relation to work carried by said turret, an extensible feedway slide having one side thereof adjustable in correspondence with the axial adjustment of the tail stock, whereby work of differing length may be accommodated, together with means for bodily adjusting the feed slide along the axis of the turret, and additional means for adjusting the same vertically and for varying its inclination.

2l. In a wood polishing machine, the

combination with a work carrying turret provided with means for automatically and successively engaging pieces of work and presenting them to polishing belts, revoluble polishing belts in operative relation to work carried by the turret, and an inclined feedway slide adapted to receive and support a series of pieces of work and having its lower end extending between the paths traversed by the work engaging portions of the turret and adapted to support the lower' piece of work in a position to be engaged and removed by the work engaging members of the turret. y 9,2. In a wood polishing machine, the combination of a revoluble turret provided with annular series of spoke holders, a polishing belt in operative relation to the turret, a relatively stationary actuating member for one series of work holders, motion transmitting devices carried by said work holders in position to be intermittingly engaged and actuated by said head in a predetermined cycle of movement, whereby the work presented to tl e polishing belt by the turret may be intermittingly rotated an d the polishing operation regulated.

23. In a wood polishing machine, the combination of a revoluble turret provided with head and tail stock members, and an axial supporting shaft, pinions operatively connected with the head stock members, a..

relatively stationary head coperating with the head stock to inclose said pinions and provided with detachable pinion actuating projections, and means for axial .adjustment of the head stock to expose said pinions and removable projections, whereby the number of said projections may be varied in accordance with the requirements of the work.

24. In a'wood polishing machine, the combination of a revoluble turret provided with head and tail stock members, and an axial supporting shaft, pinions operatively connected with the head stock members, a relatively stationary head coperating with the head stock to inclose said pinions and provided with detachable pinion actuating projections, and means for axial adjustment of the head stock to expose said pin ions and removable projections, whereby the numberof said projections may be varied in accordance with the requirements of the work, together with means for axially adjusting the tail stock members to suit the requirements for work of differing length.

25. In a wood polishing machine, the combination of a revoluble turret provided with annular series of coperating work holders, a revoluble sanding belt having a portion thereof extending across the path of the work carried by the work holders, an inclined slideway adapted to support a series of contacting spokes and provided with a stop adapted to support the lower spoke in position for engagement byl said work holders at one side of the turret, work releasing devices operative below said feedway to discharge the polished work, a chute adapted to receive the polished work from the turret, and a conveyer adapted to receive the work from the lower end of the chute.

26. In a wood polishing machine, the combination with a revoluble spoke carrying wheel, provided with rotatable spoke holders, abrading devicesA grouped about the wheel in the path of spokes carried by the holders, and a positioning member also connected with the spoke holder and adapted for cooperation with a fixed guide to prevent rotation of the spoke holder during the intervals when the spokes are out of contactwith the abrading devices.

27. In a wood polishing machine, a rotatable spoke holder, means for intermittingly rotating the spoke holder in delinite one turn movements, means for abrading spokes carried thereby during a definite portion of their one turn. movements, and means for preventing rotation of the spoke holder in the intervening intervals.

Q8. In a wood polishing machine, the com-- bination with a spoke carrier provided with a series of spoke holders, an abradmg device in the path of spokes conveyed by the carrier, means for utilizing the carrier to rotate the spokes While in contact with the abrading device, and means for positioning the spokes upon the carrier and limiting the rotation thereof to less than a complete turn when in contact With the abrading device.

29. The combination with a spoke carrier,

Y ofl a set offabrading devices each in the path of the spokes conveyed by said carrier, means for automatically ypositioning the spokes on the carrier with reference to apredetermined longitudinal line thereon vat which abrasion is to commence, means for imparting to the spokes a predetermined rotative movement While they are in contact with the abrading devices, and means for holding the spokes against additional robination with aspoke carrier, sanding devices, means for intermittingly imparting a predetermined degree of rotation to the spokes conveyed by the carrier, and means for controlling said rotative movements to uniformly start rotation from predetermined `longitudinal lines on the spokes.

In testimony whereof I affix my signature yin the presence of two Witnesses.

i 'JOHN M. NASH.

Witnesses: V

'0. C. W'EBER, A. J. MCKERIHAN.

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