US2485332A

US2485332A - Shoe machine

Info

Publication number: US2485332A
Application number: US735294A
Authority: US
Inventors: Roy N Sutton; Elmer A Thomas
Original assignee: ARROW SHOE MACHINERY CO
Current assignee: ARROW SHOE MACHINERY Co
Priority date: 1947-03-18
Filing date: 1947-03-18
Publication date: 1949-10-18
Anticipated expiration: 1966-10-18

Description

Oct. 18, 1949. R. N. suTToN ET AL SHOE MACHINE 4 Sheets-Shet '1 #llllllllhlvlllll J Filed March 1B, 194'? OCL 18, 1949. R N SUTTON ETAL 2,485,332

SHOE MACHINE 4 Sheets-sheet 2 v Filed.A March 18,- 1947 Oct. 178, 1949. R, N, SUTTQN ET AL 2,485,332

SHOE MACHINE Filed March 18, 1947 4 sheets-sheet 3 Patented Oct. 18, 1949 UNITED STATES PATENT OFFICE SHOE MACHINE Roy N. Sutton and Elmer A. Thomas, St. Louis, Mo., assignors to Arrow Shoe Machinery Co., St. Louis, Mo., a corporation of Missouri Application March 18, 1947, Serial No. 735,294

17 Claims. l i

This invention relates to shoe machines and, more particularly, to shoe-finishing apparatus for use primarily in repairing shoes.

Among the several objects of the invention may be noted the provision of an improved shoefinishing or repairing machine, including an adequate number of operating tools in a compact arrangement requiring little iioor space; the provision of a machine of this class which also requires little floor space for maneuvers of the operator; the provision of a machine of this class including a selectively operable dust-collection system; the provision of a machine of the class described wherein the shoe-finishing or repairing tools may be easily removed and replaced without a large amount of disassembling of machine parts; and the provision of a shoe machine such as described which is economical to construct and operate. Other objects will be in part apparent and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of parts which will be exemplified in the structures hereinafter described, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings, in which one of various possible embodiments of the invention is illustrated,

Fig. l is a front elevation of the machine;

Fig. 2 is a side elevation of the machine as viewed from the right of Fig. 1;

Fig. 3 is a plan view of Fig. l;

Fig. 4 is an enlarged section taken on line 4 3 of Fig. S, but illustrating in solid lines the dustcollecting hoods of the invention swung aside;

Fig. 5 is an enlarged section taken on line 5 5 of Fig. 4;

Fig. 6 is an enlarged section taken on line 6 8 ci Fig. 4;

Fig. 7 is a detail sectional view of a combination heel sander and heel breaster;

Fig. 8 is a detail section of an expansible mandrel for a bottom sander;

Fig. 9 is a transverse section taken on line 9 9 of Fig. 8;

Fig. l0 is an enlarged fragmentary perspective of an expansible element of the mandrel of Fig. 8; and,

Fig. 11 is a detail section of an expansible mandrel for a heel sander.

Similar reference characters indicate correspending parts throughout the several views of the drawings.

Conventional shoe-nishing or repairing machines embody an elongate frame of considerable length in which is journalled a long shaft extending the length of the frame and carrying a plurality of shoe-finishing or repairing tools, such as sanding wheels, brushes, buffers or burnishers, etc. Such machines not only occupy considerable floor area but also require considerable additional oor area for standing and walking room for the operator, and hence cannot be used where only limited space is available. This invention provides a novel shoe-finishing or repairing machine which, while including a sufficient number of shoe-finishing or repairing tools for the usual finishing or repairing operations, occupies much less space than conventional machines, and wherein tools are selectively movable to a given working position so that less space is required for the operator. Thus, this invention provides a shoe-finishing or repairing machine primarily advantageous in that it may be located and used in a limited space. I

Referring now to Figs. 1-6 of the drawings, the shoe-iinishing or repairing machine of this invention is shown to include an upright housing i which serves as a base for various parts of the machine and as an enclosure for a driving motor 3, a blower 5 and other parts to be described. Housing I comprises a front w'all 1, a back wall 9, side walls I I, and a table top I3. Fixed upon the table top is an elongate supporting block I5 which extends centrally from front to rear. Block I5 is in the form of an inverted box having a top I7, side walls I9 and 2|, a front Wall 23 and a back Wall 25. Block I5 supports a bearing 21 secured to its top Il with the bearing axis extending transversely. A shaft 29 is centrally journalled in this bearing with its end extending from opposite ends of the bearing. An overhung carriage or turret 3I is fixed on one end of shaft 29 and a similar carriage or turret 33 is fixed on the other end of the shaft. Thus the arrangement is such as to provide a pair of axially spaced carriages or turrets connected for conjoint rotation about a common axis.

The turrets 3| and 33 are substantially identical, each comprising a disc having a hub Xed to the shaft 29. A plurality of spindle bearing housings 35 are bolted upon the outer faces of each of the discs for the reception of rotary tool spindles with the axes of the tool spindles parallel to and equidistant from the axis of shaft 29. As illustrated, each of the turrets includes four such spindle bearing housings 35 spaced at 90 intervals around the turrets, with each housing on one turret axially aligned with a corresponding 3 housing on the other. Each bearing housing 35 is fitted with bearings 31 (Fig. 4) wherein is journalled a tool spindle. Turret 3| thus has four

spindles

39, 4|, 43 and 45 and turret 33 has four

spindles

49, 5i, 53 and 55 journalled therein. The following pairs of spindles are axially aligned: 39 and 49, 4| and 5I, 43 and 53,45 and 55.

Each of the spindles extends through an aperture to the inside of the turrets and carries at its inner end a female cone 1clutch element 51 adapted to be driven, thereby to drive the spindle. The other ends of the spindles extend axially outward from the spindle bearing housings and carry shoe-finishing tools. As illustrated,

spindles

39, 4|, 43 and 45 on turret 3| respectively carry a combination heel sander and heel breaster 59, a bottom sander 6|, a brush 63 for black shoes, and a brush 65 for tan shoes.

Spindles

49, 5 I, 53 and 55 on turret 33 respectively carry a flatsurfaced heel sander 69, a round-surfaced heel sander 1 I, and

heel burnishers

13 and 15.

A circular indexing latch block 11 is fixed for rotation with shaft 29 and turrets 3| and 33. It is located adjacent the turret 3|. This block has four latch-receiving notches 19 spaced at 90 intervals corresponding to the spacing of the tool spindles, being thus phased therewith. A rock shaft 8|, journalled in the front wall of block I5 and a bearing 83 depending from its top I1, carries a latch 85 receivable in notches 19. The arrangement is such that shaft 81| may be rocked counterclockwise, as viewed in Fig. 4, to disengage latch 85 from a notch 19, whereupon the shaft 29 and turrets 3| and 33 may be manually rotated by grasping a convenient bearing housing to any one of four indexed positions wherein two of the shoe-finishing tools (one on turret 3| and the other on turret 33) are in a working position at the front of the machine so that a shoe may be applied to either tool. Shaft 8| may then rock clockwise to re-engage latch 85 in the appropriate notch 19 to latch the turrets in position. As illustrated in Figs. l-3,

spindles

39 and 49

carrying tools

59 and 69 are in working position at the front of the machine, and latch 85 is engaged in the indexing notch 19 for these spindles to latch the turrets with these spindles in working position.

A driving clutch shaft 81 is journalled in bearings 89 which are mounted upon the top of the block I5. This shaft is driven through a belt drive 9| from motor 3 mounted beneath the table top I3 in housing I. The belt of this drive passes throughsuitable apertures in the table top I3 and the top I1 of block |5 (Fig. 6). Male cone clutch elements 90 are splined on the opposite ends of the shaft 81 extending from bearings 89 so as to be axially shiftable but non-rotatable thereon. Shaft 81 is so positioned that driving clutch elements 8| are releasably engageable with the two driven clutch elements 51 on two tool spindles to drive them in their working positions. The clutch elements 90 are biased toward engagement with clutch elements 51 by springs 93 reacting from the blocks for bearings 89. They are shiftable out of engagement with clutch elements 51 by means including shifting forks 95 on shifting fork levers 91 pivoted for rocking movement on pivots 99 carried by the side walls I9 and 2| of block I5.

The shifting fork levers 91 are adapted to be rocked to shift driving clutch elements 90 out of engagement with driven clutch elements 51 upon rocking of shaft 8| to release the latch 85 from an indexing notch 19. As illustrated, shaft 8| has fixed thereon a double crank |0I, connected by links |03 and |05 to the shifting fork levers 91, in such a manner that as shaft 8| rocks counterclockwise (Fig. 4), links |03 and |05 rock levers 91 toward each other to shift driving clutch elements 90 toward each other and out of engagement with the driven clutch elements 51.

Pedal-operated means is provided for rocking shaft 8| counterclockwise to release the latch 35 and disengage the clutches. As illustrated, a pedal |01 is pivoted at |09 outside housing I and extends outward through an aperture in the front wall of the housing. The pedal is connected by a link to the end of a crank arm I3 fixed on the shaft 8| and extending to the left through an the pedal |01 so that the pedal is normally maintained in raised position, in which position the latch is engaged in a notch 19 and the clutches for driving the two spindles in working position are engaged.

Means is provided for collecting dust resulting from use of the combination heel sander and heel breaster 59 and the bottom sander 6| on turret 3i and from use of the heel sanders 69 and 1| on turret 33. (Use of the other tools on the turret i does not necessitate dust collection.) A dust-collecting hood I1 is provided for collecting dust resulting from use of tools 59 and 5I on turret 3|. This hood is carried by an arm |I9 pivoted for lateral swinging movement upon a pivot |2| at l; the left of table top I3 so that the hood may swing outward from a dust-collecting position with respect to a tool in the working position (Fig. 1) to a retracted position clearing the tool (Fig. 4). In dust-collecting position, hood II1 engages one of closure plates |22 fixed on the bearing housings 35 for

spindles

39 and 4| so as to provide a dustcollecting enclosure around

tool

Similarly, a dust-collecting hood |31 is provided for collecting dust resulting from use of tools 59 and 1| on turret 33. This hood is carried by an arm |39 pivoted for lateral swinging movement upon a pivot |4| at the right of table top |3 so that the hood may swing outward from a dustcollecting position with respect to a tool in working position (Fig. 1) to a retracted position clearing the tool (Fig. 4). In dust-collecting position, hood |31 engages one of closure plates |42 fixed on the bearing housings 35 for spindles 49 and 5| so as to provide a dust-collecting enclosure around tool 69 or 1|. Hood |31 has an outlet |43 connected by means of a flexible conduit |45 to the suction manifold |21, conduit |45 passing through an aperture in the right side wall of housing I.

A drawer |41, which is insertable into and removable from the suction manifold through the right side wall of housing I, contains a suitable dust collector, such as a filter, for collecting dust. The collector may :be removed for cleaning or replacement simply by pulling out the drawer. The blower exhausts through a duct |49 extending through the back wallV 9 of the housing I. It is driven by a belt drive |59 from motor 3'.

The dust-collecting hoods ||1 and |31 are swingable laterally to clear all the tools so as to permit turrets 3| and 33 to be rotated to bring any desired tools to working position at the front of the machine. It is preferred to correlate swinging of the hoods with the operations of releasing the turret latching means and disengaging the clutches. To this en d, means is provided for swinging the hoods laterally outward to retracted position concurrently with depression of the pedal |01.

As illustrated, dust hood arms ||9 and |39 are provided with cranks |5| and |53, respectively. These cranks are connected by links |55 and |51 to the outer ends of rocking levers |59 and |6|, which are pivoted at |63 and |65 beneath table top |3. The inner ends of rocking levers |59 and |6| are connected by pin and slot joints to a member |61 adapted to reciprocate vertically in an aperture in the table top I3. The pedal |01 is linked to reciprocable member |61 by a linkage including a connecting rod |69 and a lost-motion connection |1|. The latter comprises a pin |13 extending from an articulated link at the upper end of rod |69 through a vertical slot |11 in the lower end of member |61. The purpose of this lost-motion connection will ap-pear.

The arrangement is such that when pedal |01 is depressed to disengage the turret latch and the clutches, connecting rod |69 is pulled down so that pin |13 pulls down member |61 to the solid-line position of Fig. 4. 'Ihis rocks the outer ends of levers |59 and |6| upward and, through links |55 and |51 and cranks |5| and |53, swings arms |9 and |39 laterally outward to retract the hoods ||1 and |31. The conduits |25 and |45 are made sufficiently ilexible to permit swinging movement of the hoods.

In the illustrated embodiment of the invention,

hood |1 is too small to accommodate the brushes 63 and 65 (which are of larger diameter than the hood |1) and hood |31 is too small to accommodate the heel burnishers 13' and 15 (which are wider than the hood |31). As previously mentioned, dust collection is not required when

tools

63, 65, 13 and 15 are used. The hoods are not made large enough to accommodate these tools as it is desirable that the hoods .be as small as possible to reduce the necessary blower capacity. It is therefore desirable to maintain the hoods swung aside in retracted position when any of

tools

63, 65, 13 and 15 are in working position, inasmuch as the hoods will not iit over them.

To provide for maintaining the hoods swung aside when these tools are in working position, a cam-controlled lever IBI, fixed on a rock shaft |83 jou-rnalled in the side wall 2| of block l5, is connected by a pin and slot joint |85 to the upper end of the reciprocable member |61. Shaft |83, outside the block I5, carries a follower lever |81 having a cam follower |89 at its free end adapted to engage a plate cam |9| xed for rotation with shaft 29 and the turrets adjacent turret 33. The cam has a lobe |93 which is of such arcuate extent and so phased as to maintain levers |81 and |8| and consequently member |61 depressed when either of paired

spindles

43, 53 or paired spindles 45, 55 are in working position. With member |61 depressed, the hoods I1 and |31 are swung aside to retracted position, as illustrated in solid lines in Fig. 4. A spring |95 is provided to bias the cam follower lever |81 toward the cam. The lost-motion connection |1| permits upward 6, movement of pedal |01 to latch the turrets and engage the clutches even though mem-ber |61 is maintained in depressed position.

The machine is also illustrated as provided with a bearing housing 20| mounted on top of the

bearings

21 and 89 for the reception of two

spindles

203 and 205, one above the other, extending transversely with respect to turret shaft 29. These spindles are adapted to :be driven by individual belt drives 201 and 209 from a motor 2|| mounted on the table top |3. The upper spindle 293 carries an edge trimming tool 2 |3 on its free end extending forward from the bearing housing. The lower spindle 205 carries atop lift cutter or trimmer tool 2 5 on its free end extending forward from the bearing housing. Suitable dust-collecting means (not shown) may be provided for tools 2 i3 and 2|5.

Operation of the above-described shoe-iinishing or repairing machine is as follows: y

As illustrated in Figs. 1-3,

spindles

39 and 49 carrying the combination heel sander and heel breaster 59 and the flat-surfaced heel sander 69, respectively, are in working position at the front of the machine. The pedal |01 is raised. Rotation of the turrets is prevented by engagement of latch 65 in the indexing notch 19 cor. responding to paired

spindles

39 and 49 and

tools

59 and 69. The driving clutch elements 90 are engaged with the driven clutch elements 51 on

spindles

99 and 49 to drive them and rotate the

tools

59 and 69 thereon. The cam follower |89 is biased by spring |95 into engagement with the low portion of the periphery of cam |9|, and member |61 consequently is raised. Hoods ||1 and |31 thus are swung inward over

tools

59 and 69 and collect dust resulting from use there Assuming that the operator should require either of paired tools 6| or 1| (bottom sander or round-surfaced heel sander) for operation upon a shoe, he will depress pedal |01, thus rocking shaft 8| counterclockwise to release the turret latch 65 from the notch 19 and to disengage the clutch elements, and pulling down member |61 to swing aside the hoods ||1 and |31 in the manner previously described and as illustrated in Fig. 4. This permits rotation of the turrets 3| and 33. He then grasps one of the spindle bearing housings 35 and rotates the turrets to bring tools 6| and 1| to the working position. The pedal may be released when the turrets have been partially rotated, since engagement of latch l65 with the periphery of latch block 11 will maintain it depressed. When tools 6| and 1| are in the working position, latch automatically snaps into the corresponding indexing notch, shaft 8| rocking clockwise due to the biasing action of springs 93, and the clutches re-engage to drive spindles 4| and 5| and tools 6| and 1|. Clockwise rotation of crank arm ||3 lifts link to return the pedal to raised position. The cam |9| is rotated `to such angular position that cam follower |89 is again biased by spring 95 into 'engagement with the low portion of the cam eriphery so that member |61 is raised to swing the hoods ||1 and |31 inward to dust-collecting position over tools 6| and 1|.

Assume now that it is desired to use either of paired tools 63 or 13 (black shoe brush or heel burnisher). The operator will depress the pedal and rotate the turrets as above described to bring these tools to the working position. The cam |9|, however, now becomes rotated to such angular position that the cam follower |89 engages the lobe of the cam to hold member |61 in depressed position. This holds aside the hoods ||1 and |31. The pedal |01, however, is lifted to its raised position, latch 85 snaps into a notch 19, and the spindle driving clutches are engaged, since `the lost-motion connection |1| permits movement of these elements independently of member |61. Thus, even though member |61 remains depressed, pin |13 of the lost-motion connection rises upward in the slot |11 thereof as the pedal lifts to raised position. The operation is the same when

tools

65 and 15 are brought to working position.

The above-described shoe-finishing or repairing machine thus includes a plurality of shoefinishing or repairing tools suflicient in number for the ordinary finishing or repairing operations in a compact apparatus which takes up comparatively little loor space. In a typical embodiment the machine occupies only about six square feet of oor area. Also, all the tools are selectively accessible to an operator standing within a limited space, Another important advantage of the machine of this invention is that the spindles have accessible ends for the tools, and the tools may be readily applied to or removed from them without disassembly of shafts from bearings, as in prior machines. Also, since less than the entire number of spindles are drivenat one time, and since dust is collected at only two tools, less power is required to drive the spindles and the blower.

Details of the combination heel sander and heel breaster 59 on spindle 39 are shown in Fig. 1. As illustrated, spindle 39 is formed with an extension 22| of reduced diameter so as to have an annular shoulder 223 spaced from its free end. A sleeve 225 is fixed upon extension 22| as by set screws 221 with its inner end engaging the shoulder. Spindle 39 and sleeve 225 constitute a cantilevered arbor extending outward from the bearing housing 35 for the spindle. Sleeve 225 is of such length as to extend beyond the free end of the extension 22|. It is formed adjacent its inner end with a flange 229 having a conical wedge 23| which converges toward the outer free end of the sleeve. A collar 233 slidable on the sleeve has a conical wedge 235 which converges away from the free end of the sleeve. Between flange 229 and collar 233 is an annular elastic ring 231 of rubber or the like, tted upon the sleeve with its central aperture countersunk 'for reception of the opposed wedges 23| and 235.

A nut 239 is threaded upon the outer end of the sleeve backing up the collar.

This arrangement is such that nut 239 may be threaded up on the sleeve to slide collar 233 toward the flange 229, thereby axially to compress the elastic ring 231 and radially to expand it to increase its diameter. Radial expansion of the ring is also facilitated by the wedging action of wedges 23| and 235 upon the ring. The ring 231 is expanded within an endless band 24| of an abrasive web, such as sandpaper, to form a heel sander 243. The band 24| is expanded to circular form and gripped in driving relation by the expanded ring 231.

The heel breaster, generally designated 245, comprises a conical mandrel 246 including a stud 241 which is threaded into the end of sleeve 225 projecting beyond the free end of spindle extension 22|. Stud 241 is formed adjacent its threaded end with a conical head 249 converging toward the threaded portion and a stem 25| extending outward from the head. On stem' 25| is fixed a conical resilient core 253 of rubber or the like,

the conical surface of which is a continuation of the conical surface of head 249. A developed blank 255 of abrasive web, such as sandpaper, or a preformed hollow conic frustum of abrasive web is fitted upon the conical surface defined by the core 253 and the head 249. The inner end portion of the web is clamped between the head 249 and the conic wall of a countersunk aperture formedin a cap 251 fixed on the outer end of the sleeve 225.

The diameter of the outer end of the heel breaster 245 is less than the diameter of the abrasive band 24| of the heel sander 243 so that the latter may be removed and replaced over the end of the tool without removing the heel breaster. To remove the band 24|, nut 239 is backed off t0 release the compression on elastic ring '231, whereupon the ring contracts radially to release the band. To replace the abrasive blank 255 of the heel breaster, the conical mandrel 246 is unthreaded from the sleeve, a new blank 255 fitted thereon, and the mandrel is threaded back into the end of the sleeve to clamp the inner end portion of the blank between head 249 and the cap 251.

Figs. 8-10 illustrate an expansible mandrel for bottom sander 6|, particularly adapted for quick replacement of abrasive bands used thereon. As shown, the bottom sander spindle 4| is formed with an extension 26| of reduced diameter so as to have an annular shoulder 263 spaced from its free end. A sleeve 265 having an outer conical wedging surface is fixed upon extension 26|' as by set screws 261 with its inner end engaging the shoulder. The conical surface of the sleeve converges away from the spindle. Fixed by a taper pin 268 within the end of the sleeve which projects beyond extension 26| is a stud 269 formed with a head providing an outwardly facing shoulder 21|. The stud is coaxial with the spindle 4|,

and its outer end, which extends out of the sleeve,

is threaded. Spindle 4|, sleeve 265 and stud 269 constitute a cantilevered arbor extending outward from the bearing housing 35 for the spindle. An annular, resilient expansion member, generally designated 213, is mounted for axial sliding movement with respect to conical sleeve 265 and is adapted to be expanded radially by wedging action when moved axially inward to expand an elastic cylindrical ring or sleeve 215 into gripping engagement with a band 211 of an abrasive web, such as sandpaper.

Expansion member 213 comprises a unitary spring ring capable of substantially uniform radial expansion and contraction for variation of its diameter. It includes an annular series of flat, wedge-shaped fingers 219 which lie in generally radial planes and extend axially with respect to conical sleeve 265. The fingers are widest at their axially outer ends 280, are provided with inwardly facing shoulders 28| adjacent said ends, and taper in width toward their axially inner ends 232. The radially outer edges 283 of the fingers lie in a cylindrical surface and engage the interior of the elastic cylindrical ring 215. The radially inner tapering edges 285 of the ngers lie in a conical surface in engagement with conical sleeve 265. Pairs of adjacent fingers are alternately connected at their axially outer ends 280 by webs 281 and at their axially inner ends 282 by webs 289, webs 281 being annularly staggered with respect to Webs '289.

A nut 29| threaded on the outer end of stud 269 backs up the expansion member 213. The expansion member is biased axially outward bv a coil spring 293 surrounding the stud and reacting from shoulder 21| of the stud against shoulders 28| of the lingers 219 so that Webs 281 of the member 213 engage the nut. The nut normally is threaded up on the stud to slide expansion member 213 suiiiciently inward to cause it to expand radially by Wedging action of conical sleeve 265, thus to expand elastic sleeve 215 ito gripping engagement with the band v211 of abrasive web. To remove the abrasive band, nut 29| is backed off. Spring 293 moves expansion mem'- ber axially outward, whereupon it contracts radially to release the band, which may then be removed over the outer end of the mandrel. A new band may then be placed on the mandrel and the nut threaded up to expand member 213 and sleeve 215 thus to grip the band.

Fig. 11 illustrates an expansible mandrel for heel sander 69 on spindle 49. This is similar to the heel sander mandrel construction of the combination heel sander and heel breaster 59. As shown, spindle 49 is formed with an extension 30| of reduced diameter so as to have an annular shoulder 303 spaced from its free end. A sleeve 305 is fixed upon extension 30| as by set screws 301 with its inner end engaging the shoulder. Spindle 49 and sleeve 305 constitute a cantilevered arbor extending outward from the bearing housing for the spindle. The sleeve is formed adjacent its inner end with a flange 309 having a conical wedge 3H which converges toward the outer end of the sleeve. A collar 3|3 slidable on the sleeve has a conical wedge 3I5 which converges away from the outer end of the sleeve. Between flange 309 and collar 3|3 is an annular elastic ring SI1 of rubber or the like, fitted upon the sleeve with its central aperture countersunk for reception of the opposed wedges 3H and 3I5. A nut 3|9 is threaded upon the outer end of the sleeve backing up the collar. The nut is threaded up on the sleeve to expand the elastic ring within an endless band 32| of an abrasive web. Operation is the same as set forth in the above description of heel sander 243.

The above-described tools are particularly useful upon the shoe-finishing or repairing machine of this invention, since they are particularly adapted for use upon the cantilevered spindles of the machine. They simplify removal and replacement of the abrasive webs, since the webs may be removed and replaced over the ends of the spindles without disassembling parts of the machine.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As many changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

We claim:

1. In apparatus of the class described, a movable carriage having a plurality of rotary shoenishing tool spindles journalled therein, said carriage being movable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein work may be applied to the tool, drive means cooperable with the selected spindle in said working position for driving it, and dust-collecting means movable between a dust-collecting position with respect to a spindle in said working position and a retracted 10 position clearing all the spindles to permit movement of the carriage.

2. In apparatus of the class described, a movable carriage having a plurality of rotary shoenisliing tool spindles journalled therein, said carriage being movable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein work may be applied to the tool, drive means cooperable With the selected spindle in said working position for driving it, dust-collecting means movable between a dust-collecting position with respect to a spindle in said working position and a retracted position clearing all the spindles to permit movement of the carriage, and means for maintaining said dust-collecting means in rectracted position when certain spindles are in said working position.

3. In apparatus of the class described, a turret, a plurality of rotary shoe-iinishing tool spindles journalled at spaced intervals around said turret, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein Work may be applied to the tool, drive means cooperable with the selected spindle in said working position for driving it, and dust-collecting means movable between a dust-collecting position with respect to a spindle in said working position and a retracted position clearing all the spindles to permit rotation of the turret.

4. In apparatus .of the class described, a turret, a plurality of rotary shoe-finishing tool spindles journalled at spaced intervals around said turret, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein work may be applied to the tool, drive means cooperable With the selected spindle in said Working position for driving it, dust-collecting means movable between a dust-collecting position with respect to a spindle in Said working position and a retracted position clearing all the spindles to permit rotation of the turret, and means for maintaining said dust-co1- lecting means in retracted position when certain spindles are in said working position.

5. In apparatus of the class described, a turret, a plurality of rotary shoe-finishing tool spindles journalled at spaced intervals around said turret, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein work may be applied to the tool, means for latching said turret in any one of its indexed positions, drive means releasably engageable with the selected spindle in said working position for driving it, dust-collecting means movable between a dustcollecting position with respect to a spindle in said working position and a retracted position clearing all the spindles, and means for concurrently releasing said latch means and drive means and Amoving said dust-collecting means to retracted position to permit rotation of the turret.

6. In apparatus of the class described, a turret, a plurality of rotary shoe-iinishing tool spindles journalled at spaced intervals around said turret, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein-work may moving said dust-collecting means/to retracted position to permit rotation of the turret, and means controlled by said turret for maintaining said dust-collecting means in retracted position when certain spindles are in said Working position.

7. In apparatus of the class described, a turret, a plurality of rotary shoe-iinishing tool spindles journalled at spaced intervals around said turret, each of said spindles having a clutch element thereon adapted to be driven, said turret being f' rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein work may be applied to the tool, means for latching said turret in any one of its indexed positions, a shiftable driving clutch element releasably engageable with the driven clutch element of the selected spindle in said working position for driving it, a dust-collecting hood movable between a dust-collecting position with respect to a spindle in said Working position and a retracted position clearing all the spindles, and means movable by an operator for concurrently releasing said latch means, shifting said driving clutch element out of engagement with a spindle clutch element and moving said hood to retracted position to permit rotation of said turret.

8. In apparatus of the class described, a turret, a plurality of rotary shoe-iinishing tool spindles journalled at spaced intervals around said turret, each of said spindles having a clutch element thereon adapted to be driven, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position wherein Work may be applied to the tool, means for latching said turret in any one of its indexed positions, a shiftable driving clutch element releasably engageable with the driven clutch element of the selected spindle in said working position for driving it, a dust-collecting hood movable between a dust-collecting position with respect to a spindle in said working position and a retracted position clearing all the spindles,

means movable by an operator for concurrently releasing said latch means, shifting said driving clutch element out of engagement with a spindle clutch element and moving said hood to retracted position to permit rotation of said turret, and cam means controlled by said turret for maintaining said hood in retracted position when certain spindles are in said working position.

9. A shoe-finishing or repairing machine comprising a rotatable shaft, a pair of axially spaced turrets fixed on said shaft, a plurality of spindles journalled at spaced intervals around each turret on axes parallel to and equidistant from the axis of said shaft, each spindle on one turret being axially aligned with a spindle on the other, each spindle extending axially outward from its respective turret and carrying a shoe-finishing tool on its axially outer end, said turrets being conjointly rotatable between a number of indexed positions corresponding to the number of spindles 412 on a turret to move a selected pair of aligned spindles and the tools thereon to a working position, and drive means located between said turrets cooperable with the selected pair of spindles in working position for driving them.

10. A shoe-iinishing or repairing machine comprising a rotatable shaft, a pair of axially spaced turrets fixed on said shaft, a, plurality of spindles journalled at spaced intervals around each turret on axes parallel to and equidistant from the axis of said shaft, each spindle on one turret being axially aligned with a spindle on the other, each spindle carrying a shoe-iinishing tool on the outside of, and a clutch element adapted to be driven to rotate the spindle on the inside of its respective turret, said turrets being conjointly rotatable between a number of indexed positions corresponding to the number of spindles on a turret to move a selected pair of aligned spindles and the tools thereon to a working position, means for latching the turrets in any one of their indexed positions, shiftable driving clutch elements releasably engageable with the driven clutch elements of the selected pair of spindles in working position for driving them, and means for concurrently releasing said latch means and shifting said driving clutch elements out of engagement with the spindle clutch elements to permit rotation of the turret.

1l. In apparatus of the class described, a base, a turret journalled for rotation on said base, spindles journalled in said turret on axes parallel to and equidistant from the turret axis, each spindle carrying a shoe-iinishing tool on one side of said turret, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position, drive means carried by the base and cooperable with the selected spindle in working position for driving it, and a dust-collecting hood pivoted on said base for swinging movement about an axis transverse to the turret axis between a dust-collecting position with respect to a tool in working position and a retracted position clearing all the tools.

12. In apparatus of the class described, a base, a turret journalled for rotation on said base, spindles journalled in said turret on axes parallel to and equidistant from the turret axis, each spindle carrying a shoe-nishing tool on one side and a clutch element adapted to be driven for rotating the spindle on the other side of the turret, said turret being rotatable between a number of indexed positions corre` sponding to the number of spindles to move a selected spindle and tool thereon to a working position, means for latching said turret in any one of its indexed positions, a shiftable driving clutch element carried by the base releasably engageable with the driven clutch element of the selected spindle in working position for driving it, a dust-collecting hood pivoted on said base for swinging movement about an axis transverse to the turret axis between a dust-collecting position with respect to a tool in working position and a, retracted position clearing all the tools, and means for concurrently releasing said latch means, shifting said driving clutch element out of engagement with a spindle clutch element and swinging said hood to retracted position.

13. In apparatus of the class described, a base, a turret journalled for rotation on said base, spindles journalled in said turret on axes parallel to and equidistant from the turret axis,

13 each spindle carrying a shoe-finishing tool on one side and a clutch element adapted to be driven for rotating the spindle on the other side of the turret, said turret being rotatable between a number of indexed positions corresponding to the number of spindles to move a selected spindle and tool thereon to a working position, means for latching said turret in any one of its indexed positions, a, shiftable driving clutch element carried by the base releasably engageable with the l driven clutch element of the selected spindle in working position for driving it, a dust-collecting hood pivoted on said base for swinging movement about an axis transverse to the turret axis between a dust-collecting position with respect to a tool in working position and a, retracted position clearing the tools, means for concurrently releasing said latch means, shifting said clutch element out of engagement with a spindle clutch element and swinging said hood to retracted position, and means responsive to the indexed position of said turret for maintaining said hood in retracted position when certain spindles and tools are in working position.

14. In apparatus of the class described, a housing enclosing a blower, a turret journalled for rotation on said housing, spindles journalled in said turret carrying shoe-finishing tools on one side thereof, said turret being rotatable to various indexed positions wherein a selected spindle is adapted to be driven, a dust-collecting hood mounted on said housing for movement between a dust-collecting position over the tool on the driven spindle and a retracted position clearing all the tools, and a, flexible conduit connecting the hood and the blower.

15. In apparatus of the class described, a base, a turret journalled for rotation on said base, spindles journalled in said turret carrying shoeiinishing tools on one side and driven clutch elements on the other, said turret being rotatable to various indexed positions wherein a selected spindle and tool are in a working position at the front of said base, means for latching the turret in any one of said indexed positions, a shiftable driving -f clutch element carried by said base releasabli7 engageable with the driven clutch element of the spindle in working position, a dust-collecting hood mounted on said base for movement between a dust-collecting position over the tool in working position and a retracted position clearing all the tools, a pedal, and linkages operable by said pedal concurrently to release said latch means, shift said driving clutch element out of engagement with a driven clutch element and move said hood to retracted position.

16. In apparatus of the class described, a base, a turret journalled for rotation on said base, spindles journalled in said turret carrying shoe-iinishing tools on one side and driven clutch elements on the other, said turret being rotatable to various indexed positions wherein a selected spindle and tool are in a working position at the front of said base, means for latching the turret in any one of said indexed positions, a shiftable driving clutch element carried by said base releasably engageable with the driven clutch element of the spindle in working position, a dust-collecting hood mounted on said base for movement between a dust-collecting position over the tool in working position and a retracted position clearing all the tools, a pedal, inlrages operable by said pedal concurrently to release said latch means, shift said driving clutch element out of engagement with a driven clutch element and move said hood to retracted position, a cam rotatable with said turret, and means controlled by said ycam for maintaining said hood in retracted position when certain spindles are in working position, there being a lost-motion connection between the pedal and the hood-operating linkage to permit latching of the turret and engagement of the clutch elements when the hood is maintained in retracted position.

17. A shoe-finishing or repairing machine comprising a rotatable shaft, a pair of axially spaced turrets fixed on said shaft, a plurality of spindles journalled at spaced intervals around each turret on axes parallel to and equidistant from the axis of said shaft, each Spindle on one turret being axially aligned with a spindle 0n the other, each spindle extending axially outward from its respective turret and carrying a shoe-finishing tool on its axially outer end, said turrets being Conjointly rotatable between a number of indexed positions corresponding to the number of spindles on a turret to move a selected pair of aligned spindles and the tools thereon to a working position, and drive means cooperable with the selected pair of spindles in working position for driving them.

ROY N. SUTTON. ELMER. A. THOMAS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PA'IIEZNTSl Number Name Date 1,011,461 Manning et al Dec. 12, 1911 1,842,551 Klos Jan. 26, 1932 1,965,707 Levoy July 10, 1934 1,971,653 Levoy et al Aug. 28, 1934 2,095,379 Coney Oct. 12, 1937 2,183,055 Vanderpool Dec. 12, 1939