US1096423A - Machine for use in the manufacture of leather articles. - Google Patents

Description

I. M. FURBBR.

MAGHINE FOR USE IN THE MANUFACTURE OF LEATHER ARTICLES.

urmommx mum 0011.21, 1911.

1,096,423. Patented May 12, 191 1 4 sinus-81112111: 1.

5; .1. 254M: y/q wz Fig /WQ Z% I. M. FURBBR.

MAOHINE FOR USE IN THE MANUFACTURE OF LEATHER ARTICLES.

APPL IOATIOK FILED 001.. 2 1, 1911 1,096,423.

Patented May 12,1914.

VM/T/VESSESZ F. M. FURBER.

MACHINE FOR USE IN THE MANUFACTURE OF LEATHER ARTICLES. APPLICATION FILED 001-. 21,1911.

1,096,423. Pat entedMay 12,1914l 4 sums- 41mm 'a.

F. M. FURBBR.

MACHINE FOR USE IN THE MANUPAOTUBE 0F LEATHER ARTICLES.

. APPLICATION rum) 001. 21, 1911.

1,096,423. Patented May 12, 1914.

4. sums-951121114.

Y 1 I235: 123 Q l/WT/VLSSZS Fig. 6. //\/V{ R /%w& gflg been builtup on the bufl'ed UNITED sTArns PATENT OFFICE.

FREDERICK M. FURBER, OF REVERE, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed October 21, 1911. Serial No. 655,867.

To, all whom it may concern:

Be it known that I, Fnnormcn M. FURBERL a citizen-of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have invented certain Ini-i provements in Machines for Use in the! Manufacture of Leather Articles, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the draw-- tings indicating like parts in the several figures. V,

This invention relates to machines for use in the manufacture of boots, shoes and other leather articles. More specifically, it relates to machines for repairing imperfections in articles manufactured of patent or enameled,

l the enamel uniformly into the surface and of leathers.

It is a fact known only too well to shoe; manufacturers that a large percentage .of shoes made from patent or enameled loath-1 ers require treatment to conceal cracks that: appear during the process of manufacture. These cracks usually occur around the toe of the shoe and they apparently are caused by the stretching of the leather at this point during the lasting operation.

The method of repairing the damaged toes or tips that is practised almost universally in shoe factories, consists in bufiing out the cracks and then applying, by hand, a liquid enamel made for this particular purpose. In practice, the workman wraps a cloth about his hand and applies a thin coating of enamel on the bufi'ed spot, polishing it as it dries. He repeats this operation until a layer of the required thickness has ace, after which he coats the entire tip with lacquer; to give it. a uniform appearance. This operation is commonly termed tip re airingi. H

turesthat will appear in t 'Jscription and will be included in theclaims. F yl glteferring to'the accompanying drawings, Figure 1 is a view in side elevation of a mach or tip fixing. The hand met-h isfo en to numerous objections, the mostserious e ing that it is both slow and expehsive.

The present invention aims 'to' 'rovide "a. machine with the aid of which imperfections of the character referred to-can be repaired more quickly'and more satisfactorily than by the methods heretofore practised.

To this end, important features of the invention consist in 'a novel construction of tool for working the enamel or other repairing'substance into thesurface of the leather, and in novel means for driving the tool, It

is evident that if the tool 'is given a contin uous motion in one direction across the work it Will rub the enamel away fromthat portion of the surface a ainst which it bears.-

hardest. I prefer, t erefore, to give the tool a work rubbing movement in a closed path, such as a circle ellipse, or a path forming a figureS, although such a move ment is not absolutely essential to the satisfactory operation of the machine. i In the construction shown, the tool is mounted on a shaft that is simultaneously rocked about its axis and reciprocated axially so that every point on the work rubbing surface of the tool is moved in substantiall an elllptical path. This arrangement a ords, among t er advantages, that of working treating a large area at any given instant.

A fu'rther important feature of this invention consists in a construction whereby the member that rubs orpolishesthe surface of the work can be moved uickly to. bring adifi'erent portion of its su ace intocontact with the work. It will be understood that in using a liquid enamel the surface of the applyin' or polishing member soon becomes so coate as to be unfit for further use. It is therefore essential to the speedy operation of a machine of this character that provision be made for moving, without loss of time, a clean surface into position to operate on the work.

In the embodiment of the invention hereinafter described in detail, this object'is attained by providing the tool with a removable cover and by so mounting the tool'that it may be given a movementat the will of the workman to bring a different part of the cover into position toioperate on the work.

The inventionalso compxrisjes1 other fgae o lowing ene embodying the resent inventionyFig. 2'is a viewfin frontel evation of the machine s'hownin Fig. 1; Fig. 3 is aside'elevation of the frame casing audits contained parts,

the cover of the casing being. removedpFiig.

the work; and Fig. 7 shows a modified con-' struction of tool.

A pedestal 2, adjustable to suit the height of the workman, supports at its upper end a casing 4 having a cover 5 bolted thereto. The casing is provided with bearings 6 and 7 for the-reception of a main drive shaft 8. In the bearing 7 a stationary sleeve 10 is supported on which two pulleys 12 and 14 are rotatably mounted. A shoulder 15 on the outer end of the sleeve 10 holds the pulleys onto the sleeve. The shaft 8 extends through the sleeve 10 and ismounted both to rotate and to reciprocate axially within its bearings. Rotary motion is imparted to the shaft 8 by means of a transverse bar 16 that is fixed rigidly to the end of the shaft and is positioned in a slot 18 formed in the outer end of the pulley 14. The other pulley 12 is idle and the driving belt may be shifted from one pulley to the other by means of a belt shifter 20 arranged to slide through the casing cover 5.

Below the shaft 8 and extending at right angles thereto is supported a tool shaft 22, this shaft being received in bearings 24 and 25 formed respectively in the casing 4 and cover 5. Mechanism is provided to transmit motion. from the drive shaft to the tool shaft, to reciprocate the tool shaft axially, to oscillate it about its axis and to give it a rotative movement when desired. The axial reciprocation of the tool shaft 22 is effected by means of a collar 26 fast on the shaft 22' and a lever 28 fulcrumed on a shaft 30 supported in bearings 32 formed in the casing 4. The lever carri s at its lower end a roll 34 positioned between the flanges of the collar 26; and it is rocked on its fulcrum by means of an eccentric bushing 36 fast on the drive shaft 8 and a short con-- to reciprocate rapidly through its bearings. Both the oscillating and rotary movements.

of the shaft 1 22 are transmitted thereto through a gear 42. This gear, as shown in Fig. 5, has a sliding connection with the hub of the collar 26 that permits the hub andthe shaft 22 to slide axially of the gear,

but compels the shaft to rotate with the gear.

A spring 44, interposed between the collar 26 and gear 42, serves to hold the gear against the bearing 24 as the shaft moves back and forth. A worm gear 46 and a pinion 48 rigidly connected together are frictionally mounted on the drive shaft 8, the worm gear meshing with the gear 42 on the tool shaft. Fixed to the shaft 8 is a collar 50 having its two parallel flanges inclined.

to the axis of rotation of the shaft. A U shaped member 52 (see Fig. 4) straddles the hub ofthe collar 50 and fits snugly between the flanges of the latter member. The part 52. which for convenience will hereinafter be termed an oscillator, has a cylindrical stem 54 that projects below the shaft.8'and is mounted to oscillate in a pivot 56, which itself is rotatably mounted in a bushing 58 extending at right angles to the shaft 8. It will be understood from an inspection of Figs. 3 and 4 and from the foregoing 'description that theoscillator 52 is free to oscillate on its stem 54, and that it can swing on the pivot 56. It should-be no-ted also that the axis of the stem 54 intersects the axis of the shaft 8, while the axis of the pivot 56 lies below and at right angles'to the shaft 8. If the shaft 8 is rotated through an angle of 180, starting from the position in which it is shown in full lines in Fig. 3, the partof the collar 50 that is uppermost in said figure will be moved down close to the pivot 56 and the collar will assume the position indicated by the broken lines in Fig. 3. It will be evident, however, that in order to have this movement take place, there must be a longitudinal movement of the shaft 8 toward the left as seen in Fig. 3 since the pivot 56 is fixed against movement longitudinally of the shaft 8. Upon a further rotation of the shaft 8 through another 180, the parts will be returned to the positions in which they .are shown in full l1nes inFig. 3 and the shaft 8 ,will be given a movement toward the right. Between these positions the oscillator 52 will rock about the axis of the stem 54 and the shaft 8 will move in one dir'ection'or the other. The worm gear 46 and pinion 48 are crowded toward the inclined collar 50 by a strong spring 60 positioned, in a counterbored space in the eccentric 36; consequently they reciprocate with the shaft 8, and the connection of the worm gear 46 with the ear 42 causes the tool shaft 22 to oscillate a out its axis. 3 v pp It will be evident that if the worm gear 46 were not restrained from rotating with the drive shaft 8 it would cause a continuous rotative movementof, the tool shaft 22. This restraint is eifected'by a stop mechanism that comprises a gear 62 fa'st on the shaft 30, the, pinion 48 meshing with the gear 62, a stop 66 also fast on the shaft 30 and a latch lever 64 arranged to engage the stop and hold the shaft 30 against rotation. The stop 66, as shown in Fig. 2 consists merely of a cam shaped device having a shoulder to engage a similar shoulder provided near the end of the latch 64. A spring 68 moves the latch 64 in a direction .to hold its locking nd in contact with the begin to rotate with the shaft 8 thus rotating the gear 42 and tool shaft 22. This rotation will continue until the latch 64 is released and allowed to engage the device 66, thus acting. through the shaft 30, gear 62, and pinion 48 to prevent further rotativc movement of the worm gear.

Lubricating material maybe supplied to the friction surfaces by means of the oil cup 70 and the tube 72 or, if desired, the casing may be filled with oil. A drain opening normally closed by the plug 74 may be provided for the purpose of drawing off the oil. A tool of novel construction is mounted on the outer end of the shaft 22. While varioiisforirls of tools may be used for the purpose of repairing tips, the particular constructions shown in the drawings have been found to. have special advantages for this work- The tool shown in Figs. 2 and 6 has the shape of a thin cylinder or wheel and consists of a support or hub 76, which may be made of wood, supported on oppo site sides by metal plates 78, which distribute the strain of the devices by which the tool is clamped to the shaft 22. The periphery of the hub 76 is grooved as indicated at 80, Fig. 6, and a rim or tire is supported on the periphery to form a yielding work rubbing surface. In the construction shown this tire consists of a layer 82 of ,soft, or

spongy rubber and a second layer 84 of the same materialhaving numerous perforations 86 formed therethrough. These perforations may be cylindrical holes punched through the layer of rubber, as shownin Fig. 6,. or they may be a series of oblong; slots so punched that they lie with their longest dimensions across the. face of'the tool as indicated in Fig. 7. It. is preferable in either case that'these perforations shall-not extend to the edge of the section 84 sineeza smooth but yielding edge is desirable order to work. the repairing. enamel .intothe space adjacent to the crease between the welt and upper of'a shoe. It is partly for this purpose that the groove is formed inthe periphery of the hub 76. This construction gives the tool that firmness at the edges of its working face that is necessary to its proper operation. close to the welt and also affords a very soft and yielding face between the edges to operate upon the other sections of the toe cap. H i

The best material for. repairing tips of which I. am at present aware is a .hjeavy liquid enamel. This materialis readily ab sorbed by any device suitable. for working it into the leather, "and since; it dries'very q'uiekly, the surface of-thc up lying. device soon becomes too hard and sti tobe fit for further use upon the shoe. For this reason I prefer to provide thetoql. with a coyer which can be readily removed and a clean one substituted therefor when; such a change is necessary. In. order to avoid the necessity of making: these changes frequently, I use for this cover a strip of sheet material preferably in the form of a belt, as best shown at 88,. 1. Various materials such as chamois skin and cloths of one kind or another may be employed for this. urpose, but I find that a strip of cotton pillow-case tubing answers. the requirements of this work admirably. since it has a polishing surface and, being woven n the form of a tube, it is without anylap orsplice that might-prove troublesome. v

The belt 88 is supported by the tool and by a roll 90 mounted to rotate freely between the members of the forked end of a plunger 92. This plunger is supported to slide at right angles to the shaft 22, and in substantially the plane of the tool, by means of a stationary bracket 94 that is bolted: to the casing 4 at 96. A spiral spring 98, surroundin the plunger 92 and interposed between tie bracket 94 and the bifurcated end of the plunger tends to move the roll 90 away from the too and therefore to stretch the belt 88 tightly. "In order to facilitate the replacement of the belt 88 I have positinned a latch in the bracket 94 in position to engage a notch 102 in the plunger 92, to hold the plunger inretracted position against the tension of the spring 98.

Any suitable form of an enamel dispens ing device may be used. The dispensing device shown compriscs a stationary metal con tainer 104 having a tight fitting cap 106 and a delivery noazle' 108-. The container is proportioned internally to receive and. support in an inverted position a bottle, indicated at 110, for the enamel so that it may drain thoroughly.v At one side of the contained 104 a small bracket 112 is secured, in which clever 114 is fu'lcrumed, the lever carryingfat its lower end a cut-off device 116 adaptcdto slide over the end of the delivery nozzle 108 andclose the opening therein, A bracket secured to the lower end of the easing 104 supportsa strong leaf spring 118 in position to bear against the level-114 and hold the cut-off 116 in its closed position. In order to 'move the cut-off, in the opposite direction, a rock-shaft 120 is mounted in bearings, provided in the casing 4, and in astationary bracket projecting therefrom, and an 'arm.v 122 fixed to said rock-shaft is curved to extend behind the lever 114 and engage it on the side opposite the spring 118. The rock shaft 120also has fixed thereto a second arm 124 (see Fig. 2) that is connected by means of a chain 126 to a foot treadle 128, A spring 130 operates on the 111111124 tohold thetreadle. .128 in a raised position. Whenthe treadle 128 is depressed, the rockshaft 120 will be moved. in a clockwise direction, as seen in Fig. 1, thus pressing the arm 122. against the lever 114 and moving the cut-ofi 116 against the tension of the spring 118 in a direction to uncover the end of the nozzle 108. The enamel may then flow through the nozzle until the treadle 128 is released whereupon the springs 130 and 118 will operate, the former to raise the treadle and the latter to move the cut-off to its closed position. 4

In using the machine the workman takes a shoe in whichthe cracks have been buifed out in the manner above described and depresses the treadle 128 to allow a drop of enamel to flow through the nozzle 108; He

holds theshoe up to the nozzle so that this drop will be deposited upon the buffed space on the shoe tip.- He then presents the shoe to the lower side of the tool in substantially the position shown in Fig. 6. The tool, as

previously described, is moved simultaneously about its axis and longitudinally of its axis so that each point of the belt 88 in contact with the tool describes substantially an elliptical path. The proportions of these two movements preferably are such that the major axis of the ellipse is about three times that of the minor axis, the minor axis being equal in length to the extent of the longitudinal reciprocation of the tool shaft. This motion works the enamel into the bufl'ed surface of the leather and polishes the enamel as it dries. It is usually necessary to repeat this operation several times before a layer of the rea uired thickness can be built' up upon the bu ed space. After a coating of the required thickness has been applied.-

the shoe is kept pressed against the tool until a highly polished surface is produced. The

shape of the tool and the motion given thereto act to treat anypart of the tip in'an entirely satisfactory manner. I

In addition to this working movement of the tool which, of course, is imparted to the entire ortion of the belt in contact with it, the too also has a rotative movement to feed the belt vforward, which movement is produced by the mechanism above described .as

controlled by the latch 64. When the part of the belt 88 that is in contact with the lower side of the tool,"where it is in position to operate on the work, has become coated and hardenedby the enamel sufiiciently to render it unfit for further use, the workman actuates the belt feeding mechanism by pressing the latch 64 and immediately releasing it'again. The result of th1s operation is to cause the tool to rotate about its axis and bring a clean part of the belt into position to operate on the shoe. In the may chine shown the parts are so proportioned that a singlerotation of the'gear 62, which takes place upon the actuation and immediate release of the latch 64, feeds the belt 88 forward about one inch.

EMMA-$3 The operation is continued in the manner just described, the belt being fed along step by step as the workman desires, until the entire belt has become coated with enamel. The workman then presses the plunger 92 toward the right, as seen in Fig. 1,. until the latch 100 catches in the notch 102. belt 88 may then. be removed easily and a new one substituted .for it, after which the latch 100 should be lifted again allowing the plunger 92 to stretch the new belt in operative osition.

It occasionally happens that it is necessary to bufi through the coat of finish on the leather in order to prepare the tip properly for the tip repairing operation. To meet this condition'I have provided at one side of" the casing 4; a reservoir 132 of stain and have connected this reservoir through a suit able valve 134 to a fountain brush 136.

When the workman finds a shoe bufled through into the grain surface ofthe leather be first applies a coat of stain to the bufl'ed spot by rubbing this spot against the brushv plurality of supports therefor, means for giving a part only of said strip of material a working movement, and means for. moving said strip to bring another portion of it into position to receive said working movement.

2. In a machine of the class described, the

combination of a tool, means for giving said tool a work rubbing movement. a cloth cover interposed between the tool and the work, and means for moving said 'cover'in'- termittently to present a fresh portion of the cover in work engaging position.

3. In a machine of the class described the combination of a tool, a support, a belt car'- ried by said tool and support-and forming a cover for the tool. mechanism for giving said tool a working movement and means for giving said belt a step by step movement at the will of the workman to bring a dif-.

ferent portion of said belt on to the working sheet material carried by said tool and support and forming a cover for the tool, means for giving said toolja work rubbing move- 1,99 BJBS ment, and means normally inoperative during said movement but arranged to be actuated at the will of the workman to give said tool a feeding movement to bring a different portion of said strip of material on to the working face of the tool.

In a machine of the class described the combination of a wheel shaped tool, a belt supported on and forming a cover for said tool, means for stretching said belt, means for giving said tool a work rubbing movement, and means for giving said tool an additional feeding movement to cause different portions of said belt to cover the working face of said tool.

6. In a machine of the class described, the

combination of a wheel shaped tool, a belt stretched over said tool, additional means for sup orting the belt, means for oscillating said tool on its axis and simultaneously reciprocating said tool axially, and means for giving the tool a rotative movement at the will of the workman.

7. In a machine of the class described, the combination of a wheel shaped work rubbing tool and means for driving said tool to cause a given point on its working face to move in a closed path in a plane substantially parallel with the axis of the tool.

8. In a machine of the class described, the combination of a wheel shaped work rubbing tool, and means for oscillating said tool on its axis and simultaneously reciprocating said tool axially.

9. In a machine of the class described, the combination of a work rubbing tool, means for giving said tool a work rubbing movement with a part only of its working face in position to operate on the work, and driven means for moving said tool to bring a different portion of its working face into position to operate on the work.

10. In a machine of the class described, the combination of a work rubbing tool, driving means for giving said tool a work rubbing movement with a part only of its working face in position to operate on the work and means whereby said driving means may be caused to move said tool step by step as desired by the workman to bring different parts of its acting surface into position to operate on the work.

11. In a machine of the class described, the combination of a wheel shaped work rubbing tool, means for giving said tool a work rubbing movement, and means for giving the tool an additional step by step movement to bring a different portion of its working face into position to operate on the work.

12. In a machine of the class described, the combination of a wheel shaped work rubbing tool, means for oscillating said tool on its axis and simultaneously reciprocating said tool axially, and means for giving the tool a rotative movement to bring a different portion of its working face into position to operate on the work,

13. In a machine of the class described, the combination of a tool, means for giving said tool a work rubbing movement in a curved )ath, a cover for said tool held be tween the tool and the work but movable relatively to the tool, and means .for moving said cover to present a fresh portion of the cover in work engaging position.

7 l4. In-a machine of the class described, the combination of a wheel shaped work rubbing tool, means for giving said tool a work rubbing movement to cause a given point on its working face to move in a closed path in a plane substantially arallcl to the axis of the tool, and means un er the control of the workman for moving said tool to bring a different portion of its working surface into position to operate on the work.

15. In amachine of the class described, the combination of a tool, a removable cover for said tool, means for giving said tool and cover a work rubbing movement and driven means for moving the cover step by step relatively to the work to bring a different portion thereof into position to operate on the work.

16. In a machine of the class described, the combination of a rotary driving memher, a device rotating with said member, but mounted for movement longitudinally of its own axis of rotation, means operated by the rotation of said device to cause it to reciprocate axially, a tool and connections between the tool and said device for trans mitting motion from said device to said tool.

17. In a machine of the class described, the combination of a rotary driving member, a device rotating with said member but mounted for movement longitudinally of its own axis of rotation, said device having parallel faces inclined to its axis,a part having parallel faces engaging the faces of said device, said part being mounted for movement about a movable axis intersecting the axis of rotation of said device, and also for movement about a stationary axis extending transversely to the axis of said device, a tool and connections for transmitting motion from said device to said tool.

18. In a machine of the class described, the combination of a tool, a shaft supporting the tool, a drive shaft mounted for rotative and reciprocating movement, means for rotating said drive shaft. means operated by the rotative movement of said drive shaft to cause it to reciprocate axially, and connections for transmitting motion from said drive shaft to said tool shaft.

19. In a machine of the class described, the combination of a tool, a shaft supporting said tool, a gear on said shaft, and means 00- l the combination of a tool, a shaft support o l a operatlng -with said gear to oscillate said 3 ing said tool, a gear on said shaft, a worm shaft on its axis.

20. In a machine of the class described, the combination of a tool, a shaft supporting said tool, a gear on said shaft, means cooperating with said gear to oscillate said shaft on its axis, and means to reciprocate saidshaft axially.

21. Ina machine of the class described, the combination of a tool. a shaft supporting said tool, a rotary driving shaft having a Worm gear connection with said tool shaft,

means operating through said connection to oscillate said tool shaft on its axis, and means operated by the rotary motion of the driving shaft to effect an axial reciprocation f of said tool shaft.

22. In a machine of the class described, the combination of a tool, a shaft supporting said tool, a drive shaft, a worm gear sup- "ported by said drive shaft and having connection with said tool shaft, and means operated by the rotative movement of said drive shaft to reciprocate said worm gear.

23. In a machine of the class described, the combination of a tool, a shaft supporting said tool, a drive shaft, a Worm gear supported by said drive shaft and having gear connection w1th said tool shaft. means 1 operated by the rotative movement of said drive shaft to reciprocate said worm gear, and means operated by the rotary movement of the drive shaft to reciprocate said tool shaft axially.

24 In a machine of the class described,

the combination of a' tool, a shaft suppo'rting said tool, a rotary drive shaft, a worm gear supported on said drive shaft but normally held against rotation therewith, a gear mounted on said tool shaft and arranged to mesh with said worm gear, means operated by the rotary movement of said drive shaft to reciprocate said worm gear, a collar on said tool shaft, and means engaging said collar and operated by the rotary motion of said drive shaft to reciprocate said tool shaft axially,

25. In a machine of the class described. the combination of a tool, a shaft supporting said tool, a gear on said shaft, means cooperating with said gear to oscillate said shaft on its axis, and means for giving said. shaft a rotative movement at the will of the workman,

:26. In a machine of the class described, the combination of a tool, a shaft supporting said tool, a drive shaft having a geared gear meshing therewith, means to reciprocate said worm gear and means controlled by the workman to rotate said worm gear.

28. In a machine of the class described, the combination of a tool, a shaft support ing said tool, a gear on said shaft, a drive shaft, a worm gear mounted on said drive shaft in mesh with said gear on the tool shaft, means operated by the rotary motion of the drive shaft to reciprocate said worm gear, a stop device normally preventing rotation of said worm gear but constructed to be operated by the workman to permit the worm gear to, rotate with the drive shaft and thereby. to rotate thetool shaft.

29. In a machine of the class described,

t the combination of a tool, a shaft supporti ing said tool, a gear on said shaft, a drive I shaft, a worm gear mounted on said drive shaft in mesh with the gear on the tool shaft, 5 means operated by the rotary motion of the drive shaft to reciprocate said worm gear, friction means intermediate the shaft and worm gear to cause the worm gear to rotate with the drive shaft, a pinion rotatable with I said worm gear, a gear meshing with said pinion, and a latch acting normally to prevent the rotation of the last named gear.

30. In a machine of the class described, the combination of a wheel shaped tool, a shaft supportingsaid tool,-a gear on said shaft, a drive shaft, a Worm gear friction- L ally mounted on the drive shaft and meshing with said gear on the tool shaft, means i operated by the rotary motion of the drive ishaft to reciprocate the drive shaft and t worm gear longitudinally of the axis of the I drive shaft, a pinion rigid with said worm 1 gear, a gear meshing with said pinion, a {spring pressed latch arranged to prevent rotation of the last-named gear, said latch tbeing constructed for operation to release i said gear, and means operated by the re- 5 tary motion of the drive shaft torecipro- 11 cate said tool shaft: axially.

31. In a machine of the class described, the combination of a wheel shaped tool. means for giving said tool awork rubbing movement, a roll supported at one side of the tool, a belt sustained by said roll and tool, aspring arranged to move the roll to tension the belt, and means under the .control of the workman for giving said tool a rotary movement to shift the portion of the belt in contact with the tool.

32. In a machine of the class described. the combination of a Wheel shaped tool, means for giving said tool a work rubbing movement, a. plunger slidably supported at oneside of said tool, a roll carried bv said plun'ger,-a belt stretched over said roll and tool. a spring acting upon said plunger to l I name to this specification in the presence of tension the belt, a latch constructed to hold i two subscribing witnesses.

the plunger in retracted position a ainst the tension of said spring. and means finder REDERIGK FURBER' the control of the Workman for giving said Witnesses: tool a rotative movement. 5 JOHN H. MCCREADY,

In testimony whereof I have signed my EMILE H. TARDIVEL

Images