US1459741A - Machine for finishing flanged articles - Google Patents

Description

June 26, 1923. HABQFM I J. M. NASH MACHINE FOR mmsame FLANGED ARTICLES Filed Feb. 17 1921 5 Sheets-Sheet 1 ATTORNEYfi mm 2%, m3.

- 1, 159%; J. M. NASH MACHINE FOR FINISHING FLANGED ARTICLES Filed Feb. 17. 1921 '5 Sheets-Sheet 2 Fig. Z

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- ATTORNEY/5' gww/w Mwm J; M. NASH MACHINE FOR FINISHING FLANGED ARTICLES 5 Sheets-Sheet 5 ATTORNEYS June 26, 1923.

. Mwm .J. M. NASH MACHINE FOR FINISHING FLANGED ARTICLES F ed Feb.. 1'7 1921 5 Sheets-Sheet 4 INVENTOR' ATTORNEY June 26, 1923. 1,459,74H

J. M. NASH MACHINE FOR FINISHING FL ANGED ARTICLES Filed Feb. 17 1921 5 Sheets-Sheet 5 INVENTOR I T? W a M M ATTORNEYS Patented June 2%, 1923.

PATENT OFFICE.

JOHN M. NASH, OF MILWAUKEE, WISCONSIN".

MACHINE FOR FINISHING FLANGED ARTICLES.

Application filed February 17, 1921. Serial No. 445,580.

To all whom it may concern.

Be it known that I, JOHN M. NAsH, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Machines for Finishing Flanged Articles, of which the following is a specification.

This invention relates to machines of the type ordinarily referred to as sanding machines altho including those designed for performing analogous operations such as buffing or polishing operations. The invention herein disclosed is particularly designed for sanding or polishing spools or similar flanged articles, cylinders, disks, etc.

A primary object of this invention is to provide a machine which is capable of performing sanding operations upon all surfaces of spools or similar articles, in some instances simultaneously upon two or more surfaces, and in other instances successive y upon different surfaces or the same surfaces in finishing operations, spools being successively advanced after each operation or series of operations in such a manner that a number of spools may be sanded simultaneously in different stages of advancement.

More specific objects of this invention are to provide a sanding machine which may be adjusted to sand the flanges of spools in a manner to produce either a substantially cylindrical periphery, or to produce a rounded surface on either or both peripheral margins of such flanges; and to provide such a machine with a wide range of adjustment so that rounded corners of any desired curvature and extent may be produced.

Further objects are to produce a sanding machine which will sand the barrel of the spool and the inner side of the flanges of such spool; which will sand the outer side of the flanges or outer surface of the spool in a novel and efficient manner, whereby interference is avoided between the oncoming spool and the sander for the outer face of the flanges; and to provide a universally adjustable sanding machine adapted for spools of differing sizes and shapes.

Further objects are to provide sander with spool rotating spindles whose operative position is controlled in a novel manner to insure preliminary acceleration for the rotation of the spool prior to the time when the spool is rigidly gripped by the spindle; to provide an oscillated sander for the barrel portion of the spools which may be moved back and forth along such barrel and may also simultaneously sand the inner faces of the flange. and to provide means for resiliently cushioning such sanding instrumentalities whereby irregularities in adjustment will be compensated for without dangerous binding; and to provide for a delicate finishing operation upon various surfaces preparatory to final delivery of the spools.

Further objects are to provide spool re ceiving spindles and associated mechanisms so arranged that the spindle is held in retracted position when there is no spool to be engaged by such spindle; to provide means for causing spindles mounted in a turret head to be retracted as the finished spool approaches the forward portion of the machine: and to provide a resilient cushioning for the tail stock spindle.

The word sanding as herein used is to be understood as including any finishing operation such as sanding, grinding, bufling or polishing.

An embodiment of the invention is shown in the accompanying drawings, in which:

Fig. l is a main front view partly in sec tion.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. is an enlarged front view of the left hand drive for the flange sander belt.

Fig. 4 is a section on line 4l-4: of Fig. 3.

Fig. 5 is a section on line 55 of Fig. 3.

Fig. 6 is a section on line 6-6 of Fig. 3.

Fig. 7 is a detail view of the vertically reciprocating mechanism for varying the ac tion of the flange sander belt.

Fig. 8 is an enlarged top sander for the spool barrel.

Fig. 9 is a side view of same.

Fig. 10 is a section on line 10-10 of Fig. 8.

Fig. 11 is a detail front view of the oscillatory connection for the sanding pads.

Fig. 12 is an end view of same.

Fig. 18 is a section on line 1313 of. Fig. 11.

detail of the Fig. 14 is a front view of the finishing brush holder and brushes which make a flexible cushion for the sand paper for the spool flanges.

Fig. 15 is a side view of same.

Fig. 16 is a top view of the tripping and centering device.

Fig. 17 is a front view of same.

Fig. 18 is an end view of same.

Fig. 19 is a side View of the outside sander and tripping device for moving it to and from the work.

Fig. 20 is an end view of same.

The machine chosen for illustration is one for sanding flanged wooden spools. In this machine, the spools are received at the front side of the machine, are carried upwardly and rearwardly, and at the same time rapidly rotated. At one portion of their orbit, the flanges of the spools are subjected to the action of sanding belts. Thereafter the body or cylindrical portion of the spool and the inner surfaces of the flanges are sanded by an oscillatory flat sanding After this sanding operation, the onter faces ofthe flanges are sanded and, as a final step, the wire edges formed at the meeting lines of the outer margins and the inner and outer faces of the flanges are removed by a very gently pressed sanding member, thereby leaving a perfectly smooth spool free from all corners, wire edges or other roughness.

General organization.

The machine comprises a body or bed 1 upon which is pern'ianently' mounted the head stock 2'. A head stock turret 8 forms a portion of the head stock and carries a series of rotating live spindles 4. At the other end of the bed 1, the tailstock 5 is adjustably mounted. A tailstock turret 6 forms a portion of the tailstock and rotates in synchronism with the head stock turret 3. A plurality of dead spindles or tailstock spindles 8 are resiliently pressed. outwardly towards the live spindles, such live and dead spindles of course being positioned in axial alignment. A convenient means for securing the adjustment of the 'tailstock is by means of a pinion 9 engaging with the rack 10 formed upon the lower surface of the bed 1, the shaft of the pinion 9 being carried in an appropriate portion of the tailstock. A hand wheel 11 is secured upon the same shaft as the pinion 9 and forms a ready means for adjusting the tailstocklongitudinally of the machine towards or away from the headstock. Suitable clamping bolts 12 are provided by which the tailstoclr may be clamped in any one of a plurality of positions of ad j ustment.

To the rear of the vertical plane which passes thru the axis of the main shaft v38 upon which the headstock turret and tailstock turret are mounted is formed a guidei nstrumentality.

way or supporting surface 14 (Fig. 2) in tegral with the main body portion 1 and forming a rearward continuation thereof. Upon this surface is adjustably mounted a left hand post 15 and a right hand post 16. Each of the posts may be provided with an adjusting pinion 17 carried by a lug 8 and operated from a squared shank 19 by means of any suitable handle. This adjusting pinion meshes with a corresponding rack- 20 formed upon the lower surface of the portion 14. Guiding and locking means for each of the posts may take the form of T- shaped slots formed in the member 14 and corresponding head bolts 21 fitting within such slots. These bolts pass upwardly thru the bottom portions of the post as indicated at 22 for the left hand post, Fig. 2, and are provided with clamping nuts whereby the posts may be clamped in any desired position of adjustment.

Flange sanding belts 23 are carried by each of these posts and are adjustably mounted thereon. The mechanisms for operating these sanding belts are each carried upon a right hand and a left hand support ing framework 2-1 provided with a plurality of slots thru which locking bolts 26 carried by the posts pass. The vertical adjustment of the sanding belt mechanism is secured thru the medium of a hand wheel 27 which, by means of miter gears 28, is adapted to rotate a threaded shaft 29 mounted against axial motion within a. bracket 30 secured upon the post and passing thru a nut 31 foianing a portion of the framework 24.

The mechanism for sanding the body and the inner surfaces of the flanges comprises a plurality of flat sanding instrumentalities resiliently (armed by a framework 32 which is mounted for longitudinal reciprocation upon the rods 33 mounted upon the portion 22 of the left hand post 15. Periodic re ciprocatory motion is communicated to this framework and correspomilingly to the sanding inst-rumentalities by means of an adjustable pitman 34, Fig. 1. pivotally secure-(l to the framework at one end and at the other end joined to a crank driven by the headstock turret driving mechanism.

The mechanism for sanding the outer surfaa es of the flanges comprises a pair of sanding instrumentalities carried upon piv otally mounted arms 35 which are allowed to be resiliently pressed inwardly at suitable intervals against the outer surfaces of the spools. The sanding of the inner sur face and of the outer surface of the flanges. after the sanding of the margins of the flanges, usually leaves wire edges at the lines of meeting of these surfaces. To remove these wire edges, a final sanding is secured by means of a sandpaper strip passed over the ends of a pair of brushes 36 which are in a position to engage the marginsof the flanges as the turrets rotate outwardly adjacent their lower portions.

After passing this last point, the dead spindles are retracted and the spools allowed to fall from the machine. at is ot course within the scope of this invention to provide means for guiding the spools outwardly from the machine, as for example, by means of a suitable guiding conduit or trough.

The details of each of the mechanisms broadly correlated by this general description are herewith given Turret heads and spool handling .szpincZZes.

The headstock turret comprises a spider member whose hub 37 is keyed to the driving shaft 38. A plurality of arms or spokes extend outwardly to the hearing or ournal members 39 lv'l'llI/l'l carry the live spindles. These bearing members 39 are formed in two main portions and have an open cen tral space therebetween. Within this central space, rollars d0, pinned to the live spindles d, are positioned and to the rear of these collars thrust washers or bearings All are located. The outer ends of the spindles are secured to driving pinions d2 by members 43 and their outwardly projecting ends are threadedly engaged by nuts 4b; which look the pinions d2 in position upon the spindles 4. The pinions 42 are drivenhfri' a central gear 45 keyed to a sleeve 46 NlllCllSllF- rounds the driving shaft 38 and is positioned within the bearing andre'eeives its power from a driving pulley ell. Thus when the pulley 4:7 is rotatei'h all of the spindles are simultaneously rotated at a higher rate independently of the relat vely slow motion of the headstock turret 3. y

The headstock turret is is driven thru the shaft 38 by means of a worm wiie'el i-S keyeiil to the outer end of such shaft. The worm wheel d8 receives its motion from a worm mounted upon the shaft 4:9. The shatt 4:9 is driven by means of miter gears 50 from the shaft 51 upon which latter shaft tight. and loose pulleys 52 are mounted.

The tailstocl; turret (S 'is splined to the driving shaft 38 which latter extends completely across the machine and is supported in suitable bearings at each end. The spline connection is relatively loose so that longitudinal adjustment of the tailstocl-t turret upon the shaft is permitted when the tai stock is moved by the manipulation of the hand wheel 11.

The dead spindles S are pressed inwardly by means of springs 53 which at one end bear upon the rear frame 6' of. the tailstock turret, and at their other ends upon collars 5-5: pinned to the dead spindles 8. The dead spindles are retracted against the action of the springs by means of a cam surface 55,

56 and 5? and co-operating rollers 58 which latter are mounted upon the dead spindles (Figs. 16 and 17) When the rollers 58 arrive at the portion 56 of the cam surface, resiliently pressed arms 59 pivotally mounted upon the forward portion of the tailstocl: turret snap upwardly against the spin dies and in front of the collars 54, thereby temporarily locking such spindlesagainst outward motion.

The spools 60 are placed within a V- shaped supporting member 61 carried by a bracket upon a rod 62 extending across the front olthe machine and keyed at i s opposite ends within brackets 64L bolted to the framework of the machine. When the spools are placed with their cylindrical portions in engagement with the V-shaped arms their contact with, and move inwardly, an i1 i'lined plate 65, thereby imparting an inward rocking motion to the lever 36 which carries such plate and which is pivotally mounted at 7 upon the frame worl: of the machine. This lever 66 is normallyoutwardly pressed by means of a pring 68 but is moved inwardly when the spool is in position upon the ll-shaped rest This lever {56 carries an adjustably mounted threaded pin 69 secured within a slot in a lug 70 formed. upon the lever 66 by me nuts 71. Vfhen a spool is positioned in the V shaped rest and the lever 6drclreitinwardly as indicated in dotted lines in Fig.1. 16, the inner end of the pin 69'will engage the outer end of the resiliently pre..-c l plVOtttlly mounted lockins: member 59 carried upon the tailstoelr and retaining the dead spindles S in retracted position. Upon the upward motion of this spindle due to the rotation of the tailstoct: turret the lockingmember 59 will be withdrawn and the spindle will enter one end of the central opening of the spool as the cam roller 58 rides downwardly upon the surface 57 of the controlling cam. l ig. 17. This initial inward motion of the dead spindles 8 snilicient to loosely support the spools between the points of the live and dead spindles, but. does not wedge the spools between the spindles and into binding I1lj:l;iifiii.61il3 with the teeth 72 of the live spindlo 'l. This loose supporting of the spools however, sufficient to allow them t: he lifted from the V-shaped rest 61, by the upwardly moving spindle and allows a small interval of time for the spools to come u i to speed that is to say, approximate the speed of the live spindle. thereby avoiding tearing of the left hand end of the spool at its point of engagement with the teeth 72 of the live spindle. After a small interval of time the cam roller 58 rides clear of the surface 57 and allows the full force of the spring to be exerted upon the dead spindle 8, thereby tightly clamping the soool between the live and dead spindle and causing the teeth 72 to engage the material of the spool.

Flange margin sanding mechanism.

The flange margin sanding mechanism is sul istantially duplicated upon each side of the machine with the exception that they are right and left hand mechanisms. It will be sufficient to describe in detail one of such mechanisms. As stated, this mechanism is carried upon a frame 24. which is adjustable vertically by means of the screw 2-9 and the associated hand wheel 27. After the desired adjustment has been securedthe frameworx is of course locked in position, as previously described, by means of the bolts 26. 7

Each set of flange mechanism is carried upon one of the left and right hand posts 15 and 16, Figs. 3 to 7, inclusive, detailing parts of this mechanism. The left hand liange sanding mechanism is driven from the pulley 73 thru the medium of the miter gears 742, the pulleys 75, 76, and the belt 77. The right hand mechanism is driven thru the medium of the gear 78 secured upon the shaft of the pulley 76, the gear 79, the pulley 80 secured thereto, the belt 81, and the pulley 82.

Referring to Figs. 3 to 7, it will be seen that the shaft 83 upon which the pulley 7 6 is secured also carries a pinion 84c and a sand belt wheel 85. The sand belt wheel is relatively large so as to give rapid motion in the direction indicated by the arrow, Fig. 3, to the sanding belt This belt is carried over a belt tightener pulley 87, and over a pair of rolls 89 and 90 mounted upon oscillating members described later. The belt tightener pulley, it will be seen from Fig. 5, is carried upon a spindle 91 which is angularly offset with respect to its attached end 92 which latter is secured by means of the set screw 93. The attached portion92 is carried in the free end of a lever 94 pivotally mounted upon the frameworlr 24 and pulled outwardly by means of a spring 95 whose tension is adjusted by the threaded bolt- 96 and nuts 97. The angular setting of the spindle 91 and consequently of the belt tightener pulley 8'? serves to take up the uneven slack in the two sides of the sanding belt when such slack occurs The rollers 89 and 90 are carried upon reciprocatory members 98 and 99 which are guided in their reciprocatory motion by means of pins 100 secured thereto and passing thru guiding bearings 101 and 102. Each spindle is carried between pins 103 which extend inwardly from forked ex tremities of the framework and are supported thereon by balls 104 giving a substantially frictionless bearing for the rapidly rotating rolls 89 and 90. The distance arms of a member 105 which is pivotally moun ed 105 to its reciprocatory member lts angular position is determined by the set screw 10? which bears against a face of the member 98; In its adjusted position, it is locked by the screw 108 which passes loosely thru the web 109 of the member 105, and threadedly engages the reciprocator member 98.

The reciprocatory motion of the members 99 and 98 is furnished by 'pitmans 110 and 111 which are pivotally secured as indicated at 112 (Fig. 7) to the respective members 98 and 99. Their upper ends are pivotally secured to a walking beam 113 which is secured upon a rock shaft 11 The rocking of this shaft, and consequently the reciprocation of the members 98 and 99, is furnished by the oscillating of an arm 115 also rigidly secured upon the shaft 114. The upper end of the arm 115 is connected by means of a pitman 116 to an adjustable crank pill 11'? carried in the outer gear 118 of a train of reduction gearswhich comprise the pinion 8 1-, gear 119 pinion 120, and before mentioned gear 118. In this manner, when the sanding belt is drivem the gear 118 rotates at a relatively slow velocity and the crank pin 117 and intermediate link mechanism impart reciprocatory motion to the members 98 and 99, thereby causing the rolls 89 and 90 to move in opposite directions alternately upwardly and downwardly. The stroke of the members 98 and 99 is controlled by the setting of the adjustable crank pin 117. Upon reference to Fig. 4, it will be seen that such pin has a squared bolt head 121 fitting within a'corresponding slot 122 formed in the gear 118. This pin is locked in position by means of the nut 123 whose pressure is transmitted downwardly thru the washer 1241, the bushing 125 against the upper face 126 of the gear 118 adjacent-the slot 122. In this manner,the bolt head 121 and the enlarged base portion 127 are locked in engagement with the gear 118 when the desired adjustment of length of stroke has been secured. The relative positions at any given time in the stroke of the two rollers 89 and 90 are determined by the angular setting of the rock arm 115 upon the shaft 1141-. This adjustment is provided by slitting the lower end of the rock arm 115 as indicated at 128 and clamping adjacent faces of the slitted portion by means of the bolt 129.

In Fig. 8, a spool is shown in the position it assumes while its flange margins are being sanded. It will be noted that the flange 130 occupies a position between the rollers 89 and 90 and that such rollers reciprocate up and down upon opposite sides of such flanges thereby causing the belt to round the outer margin of the flange as indicated in this figure. If, however, it is desired that the flange margin be cylindrical, such sanding may be secured. by placing the crank pin 117 in alignmentwith the axis of the shaft 131 so that it gives no throw to the pitman 116. Also the angular position of the portion of the belt contacting with the outer margin of the flange may be secured by the adjusting of the angle between the rock arm 115 and the walking beam or double lever 113. Also if it is desired to round one side only of the outer margin of the flange, this result may be secured by the appropriate adjustment as will now be understood from the preceding description. in fact, any desired contour may be given the outer margin of the flanges.

It is to be noted that the gear 7 9 and pulley 86 are mounted upon a shaft 132 which is carried upon the outer end of a lever 133 pivotally mounted to move about the axis of thc'shaft 83 as its center. This lever is provided with a manipulating handle 13 1 by which it may be moved to the desired position until the requisite tension of the belt 31 has been secured. \Vhen in this position, it is locked by a. belt 135 which is threaded into the t'ran'le 2-1 and passes thru an arcuate slot 136 formed. in the lever Body and timer flange face sanding mechanism.

The mechanism for sanding the cylindrical F body or barrel. ofthe spools comprises a plurality of similar elements carriedupon rods 137 mounted upon members 32 which.

comprise uprigiits secured to a connecting base portion 138. This connecting base por tion is positioned above the extended portion 22 of the left hand post 15. It carries rods 33 which are guided in bearings 139 formed in the extended portion, or foot portion 22., of the post 15, thereby pern'iitting the frame 32 to be reciprocated.

The means for reciprocating the frame members 32 comprise an adjustable pitman 34 which is formed of two reverselythreaded sections and an intermediate internally threaded sleeve 1 10 which when the adjustment is secured is locked in place by the lock nut 141. This pitman is pinned within a socket member 1 12 which is pivoted at 1 13 to the frame member 138. Its other endis pinned to a corresponding socket member 144i which is carried upona crank pin 1 15. This crank pin 1 1-5 is mounted upon a gear 146 which is in mesh with a smaller gear 147 mounted upon the shaft 19, which shaft, itwill be noted, carries the turret driving worm.

Figs. 11, 12 and .13 illustrate details of this mechanism an d it will be seen that the crank pin 1-15 has a T-shaped head 14:8 which is carried in a corresponding slot in the gear 146 or in an extended portion thereof. This crank pin is threadedly engaged by an adjusting screw 149 which is rotatively carried by the portion 150 of the gear 146 or by the hub of such gear. It is secured against axial longitudinal motion by a pin 151. When this screw 149 is rotated, the crank pin is adjusted towards or away from the axis of the shaft 152 of the gear 146, thereby varythe stroke of the frame member 32. The socket portion 144. is secured to the crank pin by means of a bushing 153, Washer 154 and locking nut 155. It will also be noted from Fig. 13 that when the nut 155 is tightened down upon the washer 153 the enlarged base portion 156 of the bushing 153 and the T-shaped head 148 clamps the corresponding portion of the member 150 between them and secures the crank pin in its adjusted position.

Figs. 8 9 and 10 show details of one of the sanding instrumentalities, and Fig. 2 shows a side view of a plurality of such members as they appear when mounted upon the rod 137 carried by the framework 32. A frame 157 has slotted lugs 158 which pivot upon the rods 137. The upper portions of these lugs are rounded to form hubs which are engaged by flanges 159 of members 160 which are clamped upon the rod 137 on opposite sides of the frame 157 The rear portion of this frame carries a roll 161 of sandpaper and also carries a housing 162 for such roll. This sand-paper is led forwardly above a raised portion 163 of the frame 157 and beneath clamping cam members 164 which latter may be operated by handles 165. The for ard portion of the member 157 car ries a wooden block 166 which has a felt pad 167 mounted upon its upper surface. The sand paper is passed outwardly over the felt pad and its outer edges are folded downwardly as indicated at 167 within recesses 166 formed upon each side of the member 157. It is found expedient to score or form a crease line on the sandpaper adjacenteach marginal edge so that the folding will occur along sharp lines. It also is found expedient to form the member 157 of two half sections which are joined at one end by means of the wooden block 166 and at the other end by means of the shaft 169 which carries the roll of sandpaper 161.

These members each have their rear ends pulled downwardly by means of a lever 170 which is fast upon the corresponding rod 137-it will be noted that the lugs 159 are loosely splined to the rod 137. The free end of the lever 170 carries one end of a spring 171, the other end being secured to a lever 172 pivoted tothe right hand frame 32 and secured in adjusted position by means of a bolt 17 3 threaded into the frame 32 and passing thru an arcuate slot formedin the lever 172.

When the itotating, spools are passed by the turret members over into cont-act with the sanding paper 161, which is positioned over the felt pads 167, the barrel portions of the spools arerotated in contact with the sandpaper while the members 157 pivot upon the rods 137 until the spool has slid past such members. Thereafter each member successively assumes the position indicated in Fig. 2 and is ready for sanding the barrel portion of the next spool. The felt pad allows resilient yielding and insures contact of the sanding paper thruout its width with the barrel portion of the spool.

As the frame'members 32 are reciprocated by the crank pin 145, and the connecting pitman, formation of ridges or grooves in the barrel portion is prevented as the sandpaper is moved sidewise back and forth across the rotating barrel portion. The portions 167 of the sandpaper which are folded downwardly upon opposite sides of the block 166' contact with the inner faces of the flanges at each end of. the stroke in a yielding manner. This yielding or resilient engagement of the side portions 167 of the sandpaper with the inner surfaces of the flanges is secured by mounting the rods 137 in such a manner that they are free to slide back and forth thru the frame members 32 but are resiliently positioned by means of springs 174 which bear upon opposite sides of one of the frame me1nhers 32 and against collars 17 pinned to the rods 137.

In this manner, if the reciprocatory motion exceeds the desired amount thru inaccurate adjustment of the mechanism, damage is prevented by the resilient yielding afiorded by the springs 174. A further feature to be noted in connection with this niechanisn'i is the resilient supporting of the sandpaper upon felt pads which insures contact thruout the extent of the sandpaper face with the barrel portion of the spool.

Outer flange face sanding mechanism.

Figs. 1, 2, 19 and illustrate the mechanism for sanding the outer face of the flanges. This mechanism comprises the levers which are carried upon pivot pins.

176 whose ends are supported in bearings 177 formed in brackets 178' bolted to the lower surface of the machine bed 1. The levers 35 are pressed towards each other by means of a spring 179 whose compression is adjusted by a screw 180 which, in turn, is lockedin adgjusted position by a lock nut 181. The upper ends'of these levers each carries a shoe 182 which is, adjustably held to the lever by means of a belt 183 engaging the lever and passing thru an elongated. slot formed; in the flange 184 of the shoe. A pair of set screws 185 carried by the upper end. of the lever bear at each end of the shoe 182 and determine its angular position, these set screws. being conveniently threadedv thru.

lugs 186 formed integrally with the lever 35. A strip of sandpaper is supplied from a roll 187 which is carried by a bracket 188 and pin 189 supported thereby. This sandpaper strip 190 passes under a cam locking memher 191 which may be manipulated by an operating handle 192 and over the upper end of the shoe 182. From this point, it extends downwardly and passes, over a roller 193 which is hung by means of a link 194 from a portion of the shoe 182. The lower or free end of the sandpa )er strip 190 is so cured to a member 195 y means-of a cam clamping, manually operated mechanism 196. This member 195 is provided with an opening 197 by means of which a weight may be attached, thereby putting the desired tension upon the depending portion of the sandpaper strip 1.90.

These sanding shoes 182- must be with drawn so as to increase the space between them to allow a spool to pass into position to be acted upon, so that such spool will neither strike the shoe nor the sandpaper strip while it is being positioned. To accomplish this, pins 198 project from the headstock turret and the tailstock turret and are arranged to strike against the arm 199 of a lever 200 which is pivotally mounted at 201 upon a bracket secured to the bed of the machine. The other end of the lever 200 is provided with a cam surface 202 which engages a roller 203 and depresses this roller each time a pin strikes the arm 199. This roller 203 is carried upon an arm 204 formed integrally with the lever 35 and is equipped with a stop screw 205. which is locked in adjusted position by a lock nut 206 and serves to limit the upward motion of the arm 204 by the contacting of the screw 205 with the under surface of the bed of the machine.

The pins 198 are so positioned upon the revolvingturrets that they will actuate the lever 200 and, thru the medium of the roller 203, the cam surface 202, and the lever 204, cause the lever 35 tov rock outwardly and withdraw the shoe 182 from the line of 1110-. tion of the flanges As soon, however, as the spool is properly positioned between the sanding shoes the pin 198 will then have just passed. the arm 199 thereby allowing the shoes to move inwardly forcing their sandpaper strips against the outer surface of the flanges of the spools.

Final sanding mechanism for flange margin-s.

After the outer marginal surfaces of the flanges have been sanded, a wire edge is formed when the inner and outer surfaces of the flanges are sanded. To remove this edge, a final relatively gentle sanding of the marginal; edges of the flanges is provided for by means of the mechanism illustrated in detaili in Figs. 14' and 1.5 and shown in its associated position in Figs. 1 and 2. This mechanism comprises a bracket 207 provided with a notch 208 adapted to fit over one of the ribs 209 of the ways formed upon the bed of the machine. An underhanging arm 210 of the bracket carries a set screw 211 adapted to engage the under surface of the outwardly projecting flange of the bed and to be locked in position by a lock nut 212. This bracket carries at its outer lower end a U-shaped rod 213 whose horizontal projecting portions 214 and 215 each carry a roll of sandpaper 216. The outer upper arm 217 of the bracket slidably holds the rod 218 in adjusted oosition. A set screw 219 passes thru this outer upper portion and engages in a longitudinal groove 220 formed in the rod 218 to thereby both lock the rod in adjusted position and prevent turning of the rod either while the adjustment is being effected or after the rod has been locked in position. The outer end of the rod 218 carries a set of brushes 221 whose base portion 222 is secured in a boXlike member 223 rigidly carried by the end of the rod. An arm 221 extends upwardly upon the outer side of the brushes and carries at its upper end a shield or guide 225 which surrounds the outer and side edges of the brushes adjacent their upper ends. The front face of the brushes is, however, free from obstruction and is designed to be presented towards the oncoming spools carried by the lower portion of the revolving turrets and in line with the flanges thereof. The sandpaper strips 226 and 22': are scored or partially slitted so as to form a plurality of closely associated longitudinally extending narrow strips. These sandpaper members 226 and 227 are superimposed and are passed beneath a manually operated cam locking member 228 carried by the member 223 and pass upwardly against the inner exposed side of the brushes and rest against such brushes -it being noted that the brushes are inclined outward- 1y to facilitate the maintaining of the sandpaper strips in proper position thereon.

hen the rapidly rotating spools. are brought forwardly by the lower portion of the revolving turrets, their flanges are pressed against the strips 226 and 227 and such strips are forced inwardly against the gently yielding bristles of the brushes 221. These bristles will cause the slitted multiple strips of sandpaper to conform substantially to the contour of the flangesand to smooth off any wire edges or resulting rough edges that are left from the former sanding operations.

Brief summary of the operation of the entire man/zinc.

pin 69 to cause the disengagement of the latch 59 with the collar 54 and allowing the spring-pressed dead spindle 8 to move inwardly as its cam roller 58 rides downward- 1y upon the .surface 57. This. action will cause the spool to be engaged between the live and dead spindles in a loose manner and will allow a slight lapse of time permitting the spool to attain approximately the speed of the live spindle before it is finally rigidly gripped between the spindles when the cam roller 58 rides off the surface 57. From this point on, the spool is positively and rigidly gripped between the spindles and is rapidly rotated while it is slowly carried by the tur rets upwardly and rearwardly, 11s it passes beneath the flange sanding belt 23 the outer marginal surfaces of the flanges are subjected to the action of the laterally traveling belt which is also alternately pressed clownwardly upon opposite sides of the flanges by the oscillating mechanism. From this point, the spool is carried rearwardly and downwardly by the revolving turrets and its barrel or cylindrical body portion contacts with the sandpaper 161 carried upon the padded members 166. These sanding members are continuously reciprocated back and forth across the cylindrical body surface while the body surface of course is in continuous rapid rotation. At the same time, the downwardly turned portions 167, Figs. 8 and 9, of the sandpaper en a e the inner faces of the flanges in a yielding manner as this entire sanding mechanism is carried upon the rod 1 137'which is resiliently positioned by the springs 174. As the spool moves downwardly, the padded member 166 with its sandpaper strip is moved. downwardly about the pivotal rod 13Tflnally allowing the spool to slide past the first member of the series and i to contact with the second member. This operation is repeated until all of these sandlng members are passed.

The spool is now carried forwardly between the sanding shoes 182 which are automatically moved apart until the spool is substantially between them. At this point, the sanding shoes 182 move inwardly, under the action of the springs 179, andforfe the sanding strips 190 into'engagement with the outer faces of the flanges, the spools, of

course being in continuous rapid rotation thruout the entire process. From this point, the spools are carried forwardly and upwardly past the sand strips 226 an lj22(, Figs. 14 and 15, and the wire edges and any undesirable rough surfaces adjacent the outer margins ofthe flanges are removed by these gently pressed sanding strips. Asthe spool continues on its upward path, the cam roller'58 eng'agesthe inclined surface and retracts the dead spindle 8 allowing the spool to drop from the machine. lt is of course.

" understood that a chute or trough orother bers, disks and similar articles, compr whereliy either a bers, disks and similar articles,

2. A machine tor sanding flanged memmeans for rotating said articles, a sand belt adapted to travel across the m thereof, and means for varying the point oi application oi? the belt upon the margins.

3. A machine for sanding flanged nienicoinpris' means for rotating said articles, a sandii g belt adapted to travel transversely a ross margins thereof, and alternately recipro cable positioning elements 'lorsaid belt, spaced to receive the work, whereby the point of application of the belt upon the- Work may be varied during the rotation of the work.

4. A machine for sanding flanged members, disks and similar articles, machine comprising means for rotating said articles, a sanding belt adapted to travel across said articles, and means for oscillating said sand ingbelt upon either side of said articles, whereby rounded corners may be produced upon said articles.

5. A machine for sanding flanged members, disks and similar articles, said machine comprising means for rotating and successively presenting said articles, a sandin belt adapted to travel transversely across said articles, and means for adjustably oscillati laid sanding belt upon opposite sides of sa articles to produce rounded corners of any desired curvature.

6. A machine for sanding flanged members, comprising means for rotating said members, a sanding belt adapted to travel. transversely across said members, and ad justable means for either retaining said belt in one position or else rocking said belt upon opposite sides of said flanges, whereby flanges may be produced which have either a cylindrical periphery or a periphery provided with rounded corners of any desired curvature.

7. In a sanding machine the combination of means for rotating flanged members, and means for simultaneously sanding the central portion of said members and the inner face of said flanges.

8. A sanding machine for sanding members having a central barrel portion and end flanges, said machine comprising means for rotating said members, and resiliently positioned means for simultaneously sandins. the

barrel portion and the inner face or the flanges of said member. 7

9. A machine for sanding flanged members having a central or barrel portion, said machine comprising a pair of spindles for rotating and presenting said members to other portions of said machine, one of said spindles being resiliently pressed against said members, and means for simultaneously sanding the barrel portions and the inner races of the flanges of said members.

10. A machine for sanding flanged members having a central or barrel portion, said machine comprising a pair of spindles for rotating and presenting said members to other portions of said machine, one oi said spindles being. resiliently pressed against said members, and reriprocatory means for simultaneously sanding the barrel portions and the inner faces of the flanges of said members.

11. A machine for sanding spools having marginal. flanges, said machine comprising means for rotating said spools, and means for successively and independently sanding the peripheries of said flanges, the body porti ons of said spools in the inner sides of said flanges and the ends of said spools.

12. A machine for sanding flanged members having a central barrel portion, said machine comprising means for successively presenting and continuously rotating said members, and resiliently pressed means hav-.

ing a cushioned sanding surface for simul taneously sanding the barrel portions and the inner flange surfaces of said members.

18. A machine for sanding cylindrical members, said machine comprising means for successively presenting and continuously rotating said members, and sanding means for sanding the end surface of said members, said sanding means arranged to move outwardly away from said end while said members are approaching and to remove inwardly against said ends when said members are substantially opposite said sanding means, whereby interference between said sanding means and said members is prevented.

14. A machine for sanding cylindrical members having end faces, said machine comprising means for successively presen ing and rotating said members, sanding means for sanding the end surfaces of said members, and means for moving said sanding members outwardly away from said end surfaces while said members are approaching said sanding means and for moving said sanding means inwardly into contact with said end surfaces when said members are substantially opposite said sanding means.

15. A machine for sanding turned members, said machine comprising means for imparting a preliminary increasingly rapid rotation to said members and for positively rospindle with the spool after tating said members, and means for sanding said members while they! are being positively rotated.

16. A machine for sanding spools, said machine comprising rotary spindles and spring-pressed cam controlled tail spindles adapted to receive between them the spools to be sanded, said cam controlled spindles permitting frictional engagement to occur between said spool and said driving spindle at the initial portion of the operation and insuring positive engagement of the rotating said spool has acquired a certain velocity, and means for sanding said spool after it has been positive ly engaged by said driving spindle.

17. Means for sanding disk-like members, said means comprising a device for rotating said members, belts disposed for movement transversely of the peripheries of said member, reciprocatory guides for said belts spaced apart to receive said members, and means for simultaneously controlling the degree of reciprocation of said guides whereby their stroke may be varied inversely or similarly to vary the point of application of said belt upon said members.

18. In a sanding machine, the combination of live spindles and dead spindles, means tending to resiliently press said dead spindles toward said live spindles, latch mechanisms for preventing the motion of said dead spindles, and means actuated by the work for operating said latch mechanisms to release said dead spindles, whereby said dead spindles will move inwardly only when work is in position to be received between said spindles.

19. In a sanding machine, the combination of a rest for receiving the work, live-spindles, resiliently pressed dead spindles, latch-mechanism retaining said dead spindles in re tracted position, and means actuated by said work when placed upon said rest to actuate said latch mechanism to release said dead spindles.

20. In a sanding machine, the combination of a sanding belt adapted to travel across the work, reciprocatory members for projecting said belt downwardly upon each side of the work, and means for adjusting the stroke of said members.

21. In a sanding machine, a sanding belt adapted to travel transversely of the work, rollers for guiding said belt, means for reciprocating said rollers upon oppositesides of the work, and means for adjusting the relative position of said rollers.

22. In a machine for sanding flanged members, the combination of a sanding belt adapted to travel transversely across the flanges, a pair of rollers arranged one upon each side of the flange, and adapted to press said belt downwardly upon opposite sides of upon said member, and a sanding sheet said flange, and means for adjusting the lateral distance between said rollers.

23.1n a machme for sanding flanged members, the combination of a sanding belt adapted to travel transversely of said flanges, rollers for guiding said belt and positioned upon opposite sides of said flanges, means for oscillating and guiding said rollers, thereby oscillating said sanding belt upon opposite sides of said flanges, one of said means being pivotally and adjustably mounted, whereby the distance between said rollers may be varied.

24. A machine for sanding flanged members having a barrel portion, said machine comprising means for supporting and rotating said members, a cushioned sanding member pivotally carried inthe path of said rotating barrel and resiliently held in normal position, whereby said barrel is sanded by the cushion sanding member, the pivotal mounting permitting the folding outwardly of the sanding member to allow the passage or the rotatmg barrel to its next position in said machine.

25. A machine for sanding spools comprising means for rotating said spools and carrying them thru said machine, a pivotally mounted member, a pad carried thereby, and a sanding sheet carried upon said pad, said pivotally mounted member being arranged in the path of said spool, whereby said barrel portion is sanded by the cushioned sanding sheet, and whereby said pivotal member may move outwardly as saidbarrel passes by.

26. A machine for sanding spools comprising means for rotating said spools and carrying them thru said machine, a pivotal member adjustably spring held in normal position against pivotal motion, a pad carried thereby, and a sanding sheet supported upon said pad, said member being in the ath of said barrel portion of said spools,

whereby the barrel portions are sanded by the cushion sanding sheet, and whereby the pressure exerted upon said spools is adjustable.

27. A sanding machine comprising means for rotating the work and carrying it thru said machine, a pivoted member mounted in the path of said work, and resiliently held against pivotal motion, a pad mounted positioned upon said pad and having edges folded downwardly upon opposite sides of said pivotally mounted member, whereby the sanding sheet may be conformed to the work for sanding portions of the work lying in different planes.

28. In a sanding machine, the combination of means for rotating and feeding the work thru said machine, a creased sanding sheet having folding portions extending at an angle to the main portion, and means for resiliently supporting said sanding sheet in the path of said work, whereby portions of the Work lying in different planes may be sanded by the same sanding instrumentality.

29. In a machine for sanding spools and other articles having surfaces to be sanded in different planes, the combination of means for rotating said articles and feeding them thru said machine, a sanding sheet having folded edges extending at an angle to the main portion thereof, means for supporting said sanding sheet in the path of said articles, and means for yieldingly oscillating said last mentioned means, whereby barrel portions and the inner faces of flanged portions may be simultaneously sanded.

30. A machine for sanding spools comprising means for rotating said spools and feeding them thru said machine, a pivotally held pad a sanding sheet folded about said pad, means for reciprocating said sheet longitudinally of said spool to cause the folded portions of said sanding sheet to engage the inner faces of the flanges of the spools, and the body portion of the sanding sheet to engage barrel portions of said spools, and resilient means for cushioning the pivotally mounted pad at each end of its stroke.

31. A machine for sanding spools comprising means for continuously rotating said spools and passing them thru said machine, a folded sanding sheet for sanding the barrel portions and the inner faces of the flanges of said spools, means for resiliently supporting said sheet, and means for oscillating said sheet longitudinally of said spool,'said last mentioned means being adjustable whereby the oscillatory stroke of said sanding sheet may be varied.

32. In a machine for sanding flanged members, the combination of means for rotating and passing said members thru said machine, a pair of shoes having sanding surfaces for sanding the outer faces of the flanges of said members, and means for moving said shoes out of the path of said flanged members while said flanged members are approaching, and allowing the sanding surfaces to be pressed into contact with said faces when said flanged members are between saidshoes. I

33. In a machine for sanding spools, the combination of a plurality of spindles for rotating and conveying said spools thru said machine, a pair of shoes having sanding sur-- faces, resilient means for pressing said shoes towards each other, and cam actuated means for moving said shoes out of the path of said spools while they are approaching, and for allowing said resilient means to press said sanding surfaces into contact with the outer faces of the flanges of said spools when said spools are positioned between said shoes.

34-. In a machine for sanding spools, the combination of a plurality of spindles for rotating and carrying said spools thru said machine, independent sanding means for sanding the marginal edges of said spools and the adjacent faces of the flanges there-- of, and a sanding instrumentality adapted to conformitself to the contour of the flanged margins and adjacent portions of the faces of the flanges for removing the wire edge resulting from the meeting of two independently and successively sanded sur faces.

35. In a macihne for sanding spools, the combination of a plurality of spindles for rotating and conveying said spools thru said machine, means for sanding the marginal edges and the faces of the flanges of said spools, slitted sanding strips, a brush upon which said sanding strips aresupported in the path of the flanges of said spools, whereby said slitted sanding strips will conform to the contour of the marginal edge of said flanges and the immediately adjacent surfaces to thereby remove any resulting wire edge formed upon said spool.

In a machine for sanding spools, the combination of a. plurality of spindles for rotating and conveying said spools thru said machine, means for successively sanding the marginal edges of the flanges and the faces adjacent thereto, and means for re moving any resulting Wire edge.

37. A machine for sanding spools, said machine including means for automatically resenting each spool successively to different a encies while maintaining it in rota tron, means for independently sanding the ends and bodies of said spools, and yieldable sanding means adapted to sand said spools at the juncture of fields of operation of previous sanding means.

38. In a machine for sanding articles having body portions and projecting port-ions, means for simultaneously sanding surfaces lying substantially at right angles to one another.

39; In a machine for sanding articles having substantially cylindrical body portions and radially projecting portions, means for sanding surfaces in said body portions and surfaces lying in different planes and on opposing sides of said radially projecting portions in a series of operations some of which are simultaneously performed and some of which are successively performed.

JOHN M. NASH.

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