US1393396A - End-lasting mechanism - Google Patents

Description

c. F. PYM.

END LASTING MECHANISM.

APPLICATION FILED IAN. 13| 1919.

Patented Oct. M, 1921.

CHARLES E. rYM, or LYNN, ivrAssACnusETrs, `.assipentole. "1ro UniTEn' SHOE MACHINERY CORPORATION, on rATEEsoN, `NEW JERSEY, n CORPORATION ,CE NEW JERSEY.

inesatte.

To all whom t may concern.' i

Be it known that I," CHAnLEs F. PYM, a` subject of theKing of England, residing at Lynn, in the county of Essex and Stateof lllassachusetts `have invented certain lmprovements in End-Lasting Mechanisms, of which the following description,` in connection with the accompanying drawings, isa speciiication, like reference j characters on the drawings indicating like parts in the several `figures.

`lhis invention relates to 'machines for working uppers over lasts, and more particularly to end` lasting mechanism vfor use in such machines. The invention is herein shown as embodied in toe lastingL mechanismparticularly designed lfor, use inbed lasting machines, but it'will be understood J that in its broaderaspects the invention is not limited to toe lasting means nor restricted in Vutilityto machines of the particular type illustrated or to `machines in which the operations are eifected` manually.

An object ofthe invention isto provide an improved construction offend lasting mechanism designed to facilitate accurate conformity of the wipers to the contourV of the shoe and to insure precision in theV closing movement of the wipers to cause them to wipe the margin of the upper inward over the shoe bottom a substantially uniform distance around the end and along the opposite sides of the shoe.` With this and otherrobjects in'view, the invention provides, as an importantffeature, novel means constructed and arranged to` permit a preliminary adjustment of the wipers to the contour of the shoe prior totheii` wiping movement inward over the shoe bottom. The construction shown as Van illustrative embodiment of the invention comprises manual means for effecting a preliminary movement of each wiper independently of the other to position its-inner edge substantially contiguous to the lateral periphery of the -.shoe, and means automatically acting to lock the wipers against retractive movement independently of their operating means to cause them` in their-subsequent closing movement over `the shoe bottom to bemoved inward equal distances at the opposite sides, the machine being furtherconstructed to cause the wipers `to be released by the locking means in the return of the Specication of Letters atent.

`liminary adjustment of END-Ensuite MECHAnIsM.

A rammen oet. ii, taai.

` Application filed` January 13, 1919. Serial No. 270,864.

p-artsto starting position. In the use ofthe construction shown, moreover, the wipers are first moved forward by their operating meanssubstantially to the end face of the shoe and are then relatively adjusted later- `ally of the shoe, thus insuring a uniform inward movement over all portions of the mar-gin of the shoe bottom around the Vend and along the opposite sides. ln machines designed to effect an upwipe around the end of the toe prior to the overwiping action, as in the illustrative construction, such prethe wipers to the contour of the vshoe insures effectiveness in the upwiping operation around the entire end portion of the shoe, in addition to the manifest advantage `in the overwiping operation, irrespectiveof any upwipe, of forcing the upper closely into the angle between the feather and the shoulder or rib of the sole or insole at all points Awithout danger of damaging. any ,portion of the shoulder or rib by `reason of an unsymmetrical relation of the wipers to the shoe. It will be evident that with such a construction of end lasting mechanism the same wipers may be used effectively in lasting a comparatively wide range of sizes and styles of shoes.

The above and other features of the invention, including certain details of construction and combination of parts, will now be'described with reference to the accompanying drawings and pointed out in the claims. y i.

In the drawings,

Figure l is a plan view olf end lasting mechanism in which the inventionis em- 'bod1ed,.port1ons of the mechanism' being broken away to illustrate the interior construction, and

Fig. 2 is 1a view in front elevation on a smaller scale illustrating the application of themechanism shown in Fig. 1 to the toe lasting portion of a bed lasting machine.

For purposes of illustration'the invention is herein shown asembodied in mechanism particularly designed for use in a bed lasting machine of the general type disclosed in `United States Letters Patent No. 1,018,477,

granted on Feb. 27, 1912 upon an applicationV of Matthias Brock, certain features of the construction illust-rated in Fig. 2 being more fully described in United States Letters Patent No. 1,284,870 granted upon application of Matthias Brock on Nov. 12, 1918. The toe lasting portion of machines of the illustrative type comprises a frame 2 having a guideway for a vertically movable stem 4 upon which the toe lastingmechanism is supported, the stem 4 being connected to a treadle (not shown) whereby the mechanism may be elevated to wipe the upper over the lateral periphery of the last around the toe toward the edge of the slice bottom. The stem 4 supports a bed plate 6 upon which is slidably mounted a supporting plate 8 adjustable lengthwise of the machine by means'of a screw 10 operated by a hand wheel 12 to position the lasting mechanism properly in accordance with the length of the shoe, the shoeon its last being mounted as usual upon a heel spindle (not shown) with its toe end supported upon a toe rest 14 mounted for adjusting movement lengthwise of the machine with the toe lasting mechanism. Mounted on the plate 8 is a support 16 adjustably movable laterally of thevmachine and carrying a plate 18 which is pivoted at 20 to swing laterally as determined by adjustment of a hand wheel 22. Upon the plate 18 are projections 24 arranged to support on a transverse pivot 26 a head 28` which is adjusted about the pivot and maintained in adjusted position by `means of a screw 30. The head 28 has a sleeve portion 32 providing a bearingl for a hub 34 (Fig. 1) of the toe wiper head 36, this-head being adjustable in its bearing by means of a screw 38 to tip the toe wipers laterally in Such manner as to adapt them tothe lateral inclination of the forepart of the last bottom. Since the various features ot the construction as thus far described may be substantially as in prior machines of the illustrative type and as fully described in the prior patents above referred to, the application of theV present invention to the prior type of machine will be readily understood without any further detailed description of these well knownparts.

The wiper head 36 in its front end portion is recessed to provide a slideway for a wiper support or carrier 40 which is secured to the front end of an operating plunger 42 for bodily movement lengthwise of the shoe, the plunger 42 being connected at its outer end to a hand lever 44 whereby the operative movements of theY wiper carrier are eifected. Mounted in a recess in the wiper carrier 40 area pair oi' gear segments 46 which are grooved in their front edges to receive wiper plates 48. The wiper plates are locked to the supporting gear segments by pin and slot connections so constructed as to permit a limited bodily positioning movement of the wiper plates around the end of the shoe in response to their engagement with the shoe. The wiper plates 48 are pivoted together at 52 for relative swinging movements, the axis of the pivot 52 being substantially coincident with the axes of swinging movement of the gear segments 46 determined by rolls 54 which are mounted on studs secured to a cover plate 56 on the wiper carrier 40 and engage in curved slots 58 in the gear segments.

For imparting operative closing movement to the gear segments 46 and their supported wiper plates, the wiper carrier 40 has mounted thereon pinions 60 the teeth of which are in engagement with the teeth on the outer edges of the gear segments, these pinions being fast with smaller pinions 62, the teeth of which are in engagement with teeth on rack bars 64 mounted-in the wiper head 36. Collars 66 secured on the ends of the rack bar 64 are arranged to engage the wiper head 36 to limit lengthwise movement of the rack bars in one direction, the bars being normally held with the collars 66 in engagement with the head, as shown in Fig. 1, by means of springs 68 connected at theirl opposite ends respectively to the rack bars and to portions or" the wiper carrier 40 in which the front ends of the rack bars are guided. It will be evident that with the rack bars 64 thus held stationary by the collars 66, as shown in Fig. 1, a forward movement of the wiper support 40 effected by swinging the lever 44 will cause the pinions 60, 62 to be turned by their connection to the relatively stationary rack bars in directions to swing the gear segments 46 and their supported wipers inwardly toward the shoe during the bodily forward movement of the support 40 and the wipers.

For the purposes of this invention each of the rack bars 64 has fast thereon a block 70 having a pin and slot connection 72 with a hand lever 74 which is pivoted at 76 on the wiper head 36. By moving one or the other of these hand levers in the direction oi" the arrow on Fig. 1 a preliminary lengthwise movement may be imparted to the connected rack bar 64 independently of the operating lever 44 and plunger 42 in a direction to turn the connected pinions 60, 62 and to swing the corresponding gear segment 46 and its supported wiper plate inwardly toward the shoe about the pivotal axis 52. In this way the operator is enabled to move one or both of the wiper plates, each independently of the other, for closing the wipers preliminarily into substantial conformity to the contour of the shoe at its opposite sides. ln order to lock the wipers in such position of adjustment, each of the blocks TO is provided with ratchet teeth 78 arranged to be engaged by a pawl 80 pivoted on the wiper head 36. Each of the pawls 80 has connected therewith a lever arm S2 which is pivotally connected in turn to a bar S4- slidingly mounted for lengthwise movement in a block 86 which is swiveled in the cover lOO llO

plate 56. A nut 88 0n the bar 84 normally serves by engagement with block 86 to position the pawl out of engagement with the ratchet teeth 78, as shown in F ig. l. This is the normal position of the parts before any operative forward movement is impartedto the wiper carrier 40. On the opposite side of the block 86 from the nut 88 aspring mounted on the rod 84 between the block and head 92 on the rod serves as yielding means whereby, upon a forward movement of the wiper support 40, lengthwise movement is imparted tothe rod 84 in a direction to swing the pawl 8O into engagement with the teeth 78 in such manner as to cause the pawl to retain `the rack bar 64 in any position to which it is moved by the operation of the lever 74.

In the operation of the machine to last the toe portion of a shoe, after the usual adjustments have been made to position the toe l'asting mechanism properly :in accordance with the length of the shoe and to position the wipers in the correct angular relation to the plane of the shoe bottom, the operator swings the `lever 44 to move the wiper support 40 toward the shoe a suiiicient distance to carry the intermediate portion of the 'wiping edges of the plates 48 substantially up to the endzface of the shoe.v lf the shoe is a welt shoe, for example, the wipers will thus be moved forward substantially into engagement-with the end face 4of the shoe below the plane of the shoe bottom preparatory to theupwiping operation. In this preliminary bodily movement of the wipers they are also closed inwardto some extent toward the opposite sides of the shoe by the swinging movement of the gear segments 46 effected by the turning of the pinions 60, 62 through their connection with therelatively stationary rack bars 64, and the pawls 80 also are swung outward into position toengage the teeth 7 8 on the blocks 70, as hereinbefore explained. The operator now` observes the relation of the wipers to the shoe7 and if more accurate conformity of the edges of the wipers to the contour of the shoe may be secured by swinging one or both of the wiper plates farther inwardly toward the shoe prior to the closing movement of the wipers inwardly over the shoe bottom, he moves one or the other or both of the levers 74 to effect the required adjustment. It will be evident that the pawls 80,

previously rendered operative in the initial i movement of the wiper support, will serve to retain the wipers in adjusted relation. Having positioned the wipers in this manner, the operator will, if the shoe is a welt shoe, move the to'e lasting head upwardly to effect the upwiping operation around thetoe. If more than one upwiping movement is required, the operator may, without affecting the position of the pawls jbottom, the operator'moves the hand lever 44 forwardly to close the wipers inwardly over the shoe bottom and effect the overwiping` operation. It will be evident that by reason of the preliminary adjustment of the `wipers t0 the contour of the shoe the' wiper plates 48 begin-to Aclose inwardly over the shoe bottom simultaneously at the end and j the opposite sides of the shoe and are consequently moved aV uniform distance inwardly from the edge around the entire toe portion of the shoe. This :insures that the margin of the upper shall be forced closely into the Vangle between the feather and the shoulder or rib of the sole or insole in the case of a welt shoe or a turn shoe without danger of injury to the shoe materials by reason of any unequal inward movement of the wiper plates.V

Having wiped the upper into lasted position inthe manner above explained and secured it in the usual way, the operator withdraws the wipers from engagement'with the shoe by reversemovement of the lever 44 to its starting position. In this backward movement of the wiper carrier 40 the wipers are swung to their open position through the action `of the rack and pinion mechanism, andthrough engagement of the swivel blocks 86 with the nuts 88 on the rods 84 the pawls 80 are returned to their inoperative position out `of engagement with the ratchet teeth 78. j The vrack bars 64 are thusv released from the adjusting mechanism and are permitted to return to their normal posivtion relatively to the wiper head through the action of the springs 68, such return move-- ment ofthe rack bars serving also t0 position the gear segments 46 and the connected wipers centrally of the wiper lsupport as indicated in Fig. l.

lVhile the invention has been described with particular reference to the operation of the machine upon a welt shoe, it will be understood that the invention in its broader aspects is not restricted to use in the manufacture of shoes of any particular type.

Having described the invention, what I claim as new and desire to secure by Letters Patent ofthe United States is:

1. In mechanism of the class described,the combination with end embracing wipers, of operating means and connections between said means and the wipers for closing them inward laterally of a shoe, said connections being constructed and arranged to permit relative lateral closing movement of the wipersV independently of said operating means to adjust them to the shoe, and addi- -tional means controlled by the operative locking each wiper as thus adjusted against retractive movement independently Vot the operating` means, and mechanism automatically operative upon reverse movement of the wipers to render said locking means inoperative.

3. In mechanism ot the class described, the combination with end embracing wipers, of' operating means and connections between said means and thewipers for closing them inward laterally of a shoe, said connections being constructed and arranged to permit relative lateral closing movement of the wipers independently of said operating means to adjust them to the shoe, means for locking` the wipers in adjusted relation, and mechanism constructed and arranged to cause the locking means to release the wipers in the return of the parts to starting position.

t. In mechanism ot the class described, the combination with end embracing wipers, of operating means constructed to move the wipers torwardly toward a shoe, connections between said means and the wipers'to cause the wipers to be closedY inward laterally of the shoe by Asaid* forward movement, means tor adjusting said connections independiently of the operating means to position the wipers relatively to the shoe, and means automatically operative to lock the wipers in adjusted relation and to release them in the return of the parts to starting position.

5. In mechanism of the class described, the, combination with end embracing wipers and means tor operating said wipers, of means for eii'ecting a preliminary movement of each of the wipers independently of the other to adjust the wipers substantially to the contour of the lateral periphery ot the shoe, and locking means mounted on a part of the machine normally stationary during the operative movement of the wipers for retaining the wipers in adjusted relation to cause them to be closed inward equal distances from the edge of the shoe bottom by the subsequent action ot the operating means.

6. In mechanism of the class described, the combination with end embracing wipers, a support for said wipers mounted for Inovement lengthwise oi' a shoe, and independent connections to the different wipers to cause them to be closed inward laterally of the shoe by said movement of the wiper support. ot means for moving said wiper operating connections each independently of the other to adjust the wipers relatively to the shoe, means tor retaining the wipers and their operating connections in adjusted relation.y and mechanism tor causing said retaining means t0 release the wiper operating =onnections and permit the wipers to resume their normal relation to each other in the subsequent return ot' the wiper support to starting position.

T. In mechanism of the class described. the combination with end embracing` wipers, a support tor said wipers mounted tor movement lengthwise ot a shoe, and independent connections to the different wipers to cause them to be closed inward laterally of the shoe by said movement ot the wiper support, oi means tor moving said wiper operating connections each independently otthe othei` to adjust the wipers relatively to the shoe,

'and locking means arranged to be rendered operative by movement ot the wiper support toward the shoe to retain Said connections in adjusted position.

8. In mechanism of the class described, the combination with end embracing wipers, and mea-ns for operating said wipers.v of manual means for effecting a preliminary movement ot the wipers independently of said operating means to adjust, them substantially to the contour of the lateral periphery of the slice, and mechanism controlled by said wiper operating means tor retaining the wipers in adjusted relation and tor subsequently releasing them in the return of the parts to starting position.

9. In mechanism of the class described, the combination with end embracing wipers and means for operating said wipers, of' manual means tor effecting a preliminary movement ot the wipers independently of said operating means to adjust them substantially to the contour of the lateral periphery ot' the shoe, 4and pawl and ratchet mechanism arranged to be controlled by said wiper operating means for retaining the wipers in adjusted relation and for subsequently releasing them in the return of the parts to starting position.

l0. In mechanism ot the class described, the combination with end embracing wipers, a support for said wipers mounted tor movement lengthwise of' a shoe, and connections to cause said wipers to be closed inward laterally ot the shoe by said movement of the support, of means for moving said Wiper operating connections each independently of the other to` adjust the wipers relatively to the shoe, and locking means connected to said wiper support and arranged to be ren-` dered operative by the movement of `the support to retain the wiper Voperating connections in adjusted relation and subsequently to release said connections.

11. Inmechanismfof the classfdescribed,

" the combination with end embracing wipers,

` connected respectively to: the

asupport for said wipersmountedfor movement lengthwise of a shoe, manual means for .imparting*operative movement to said support, and unyieldlng `connections whereby closing movementlaterally ofthe shoeis imparted-to the wipers by the movement of. the support, of manual means comprising parts normally stationary'in the" operative movement'of the wipers for effecting movement of said connections independently of the movement ofthe wiper support to adjust the wipers relatively to the shoe, and mechanism for retaining the wipers in adjusted relation to cause them to be closed, inward equal distancesirom the opposite sides of the shoe through the subsequent operative l movement of the wiper support.

12. In mechanism of the class described,`

the combination with end embracing wipers and means for operating said wipersoi mechanism comprisinglevers` mounted on a partofuthe machine normally stationary in the operative ,movementl oit' the wipers and meohanismbcompri'sing membersrmounted on a part of `the!machine'normally stationary inthe operative movement `ofthe wipers for adjusting `the fwipers independently of their operative' movement substantially to the contour of the lateral periphery of the shoe,

andlocking means-constructed and arranged to retain the wipers in adjusted relation.`

14.' `ln mechanism of the "class described,

the combination with end `embracing wipers,

a supportfor said wipers'mounted for move" ment .lengthwise of a shoe, and connections to `the respective wlpersto cause them to be closed inward. laterally of the shoe said `movement of the wiper support, oif'hand levers arranged t0 Operate `said connections eachindependently of" the other to adjust the wipers relatively to theshoeeand `means con` trolled by movementr of the? wiper support for retaining the wipersin adjustedrelation and for,` subsequently releasing' them.

`15$In mechanism of the classdescribed, thecombination with end embracing wipers,

otmechanism comprising `pinions and rack diii'erent v bars `for imparting operative closing movei ment 'tothe wipers, means for moving said raclrbars to adjust the wipers relatively to the shoe, and locking means constructed and arranged to retain the rack bars in adjusted position and` subsequently to release them` to permit the wipers to resume theirfnormal relation to each other.

16. In mechanism of the class described, the combination with end embracing wipers, of `gear segments connected to said wipers to `close them inward over a shoe, pinions engaging` said gearsegments, rack bars con-.-

nected. to saidpinions to operate them, and hand `levers connected `to the respective rack bars for adjusting the wipers each independentlyof the other. i

17. In mechanism of theclass described,`

the combination with end embracing wipers, of gear segments connected to said wipers toclose them inward over a shoe, pinions engagingsaid gear segments, `rack bars connectedto said pinions to operate them, manual means for moving said rack bars lengthwise to adjust the wipers relatively to the shoe,a`nd pawl and ratchet mechanism `for retaining the rack bars Vin adjusted position.

18. In mechanism of the class described, the combination with end embracing wipers, of a support for said` wipers mounted for movement lengthwise of a'` shoe,` ,pinions carried by said support and connected to the `wipers to close them,normally stationaryf` rack bars connected to said `pinions to render them operative in the'movement vof the wiper support toward the shoe,` manual means for `moving said rack bars lengthwise each independently of the other to adjust the wipers relatively to the shoe, and pawl and ratchet mechanism for retaining the rack bars .inadjustedposition. j 19. In mechanism-oi the class described,

the combination with end embracing wipers,`

of `a support for said wipers vmounted for movement lengthwise of a shoe, pinions carried by said support and connectedto the wipers to close them, normally stationary rack bars connected to said pinions to render them operative in the movement ofthe wiper support toward the shoe, means for moving said rack bars lengthwise each independently oi=theother to adjust the wipers relatively tothe shoe,`and mechanismfcontrolled bv movement of the wiper support for retaining the rackbars in adjusted positionand for subsequently releasing the 20. In mechanism ofthe class described, the combination with end embracing wipers, of a support `for said wipers mounted for movement lengthwise of `a shoe, pinions carried by said supports and connected to the wipers to close them, normally stationary rack bars connected to said pimons'to `renoler them operative in the movement of the wiper support toward the shoe, manual means for moving each of said rack bars lengthwise independently of the other to adjust the wipers relatively to the shoe, ratchet teeth carried by said rack bars, and pawls arranged to be controlled by the movement of the wiper support for engaging said teeth to retain the rack bars in adjusted position and for subsequently disengaging the teeth `to permit the wipers to resume their normal relation to each other;

21. In Vmechanism of the' class described, the combination with end embracing wipers,

of a support for said wipers mounted for `tol movement .lengthwise of a shoe, mechanism arranged to be operated by said movement oi:I the support ior closing the wipers inward laterally of the shoe, manual means for operating said support to move the wipers initially into engagement with the end face oi the shoe and for subsequently closing them inward over the shoe bottom, manual means arrangedto be operated while the wipers are positioned substantially contiguous to the end face' of the* shoe to close them adjustably toward the lateral periphery of the shoe, and means arranged to Vbe renderedtheir inner edges in substantially contiguous relation to the side faces of'the shoeV while said Yedges* are similarly positioned relatively to the end face of the shoe, and additional means -for lockingy the wipers against retractive movement independently of their opera-tingmeans to cause them to be moved inward vuniformlyover the end and the opposite sides of' the shoe and for subsequentlyV releasing them in the return of the parts tov starting position.k Y

QSQIn'mechanism of the class described,

the combination with toe end embracing wipers, of operating means constructed to enable-the'operator to move the wipers forwa-r li preliniinarilyto position them substantially contiguous-.tothe toe end face of Y a shoe, betweenthe bottom land the top of the shoemanual means'for swinging the'wipers inwardly while they are thus positioned and heldagainst vforward movement to carry theirinner edges into substantially contiguous'v relation to the sides ofthe shoe, and meansau'ton'iatically' operativeY to lock the wipers against retractiveV swinging movement to cause them to be moved inward a uniform distance 'from the edge of the shoe bottom at the end and the opposite sides of the shoe in the subsequent overwiping operation.

24. In mechanism of the class described, the combination with toe end embracing wipers and a shoe support, of opera-ting means constructed to move said wipers for ward preliminarily to position them contiguous to the toe end face of a shoe on said support below the plane of the shoe bottom, means for swinging the wipers while they are thus positioned to carry their inner edges into contiguous relation to the sides of the shoe, means constructed to lock the wipers against retractive swinging movement from substantially any position to which they may be moved in thus adjusting them to a shoe, and means for moving the wipers to upwipe the upper around the end ot the shoe while they are thus positioned prior to their overwiping movement. i

25. In mechanism ot the class described, the combination with shoe positioning means and toe embracing wipers relativlely arranged to permit the wipers to be closed around the toe end ot a shoe at a distance from the plane of the shoe bottom for wiping the upper over the lateral periphery of the vlast prior to wiping it inwardly over the bottom of the last, ot. operating connections for the wipers constructed to permit each wiper to be adjusted independently ot the other to the contour of the lateral periphery of the shoe, and additional mechanism for locking the different wipers against retractive movement from the positions to which they are thus adjusted.

26. In mechanism of the class described, the combination with shoe positioning means, of toe end embracing wipers mounted for advancing and relative closing movements into engagement with the lateral periphery of the shoe around the toe to permit the upper to be wiped over the lateral periphery of the last toward the plane of the shoe bottom before it is wiped inwardly over the shoe bottom, operating connections for said wipers constructed to permit the wipers to be adjusted each independently of the other to the lateral periphery ofthe shoe after they have been advanced and partially closed around the end of the shoe, and locking mechanism automatically operative in such adjustment of the wipers to hold them against retraetive movement from adjusted position.

27. In mechanism of the class described, the combination with shoe positioning means, of end embracing wipers, a wiper support mounted for movement lengthwise of the shoe, operating connections for said wipers comprising parts normally stationary during 'the movement of the wi er support and acting-in response to suc vmovement to close the wipers inward laterally oi the shoe, said normallystationary parts being movable to adjust the wipers to the of the shoe, operating connections for said wipers comprising parts normally stationary during the movement of the wiper support and acting in responsefto such movement to close the wipers inward laterally of the `1 shoe, manual means connected to said normally stationary parts to adjust the wipers to the contour of the shoe, and mechanism for holding said parts in adjusted position.

29. In mechanism of the 'class described, the combination with shoe positioning means, of end embracing wipers mounted for simultaneous forward movementlengthwise ot the shoe and closing movement laterally of the shoe, mechanism for impartingsaid movements to the Wipers constructed to permit adjustment of the wipers laterally of the shoe independently of their -forvward movement, and locking mechanism mounted on a part of the machine normally stationary during the operative movement of the wipers for holding the wipers in adjusted relation.

30. ln a machine of the class described,

the combination with shoe positioning means, of a wiper supporting head, a wiper support mountedon said head for 'movement toward and from the shoe, wipers carried by said support, connections between said wipers and the wiper head for swinging the wipers inward laterally of the shoe in the forward movement of the wiper support, said connections comprising parts manually movable for adjusting the wipers laterally of the shoe, and mechanism mounted on said wiper head for holding the wipers in adjusted position.

3l. In a machine of the class described, the combination with shoe positioning means, of a wiper supporting head, a wiper support mounted'on said head for movementV toward and from the shoe, Vwipers carried by said support, connections between said wipers and the Vwiper head for swinging the wipers inward laterally of the shoe in the forward movement of the wiper sup-4 port, said` connections comprising parts manually movable for adjusting the wipers laterally of the shoe, locking mechanism mounted on said wiper head forv holding the wipers in adjusted position, and connections between said locking mechanism and the wiper support for rendering said locking mechanism alternately operative and inoperative. Y

In testimony whereof l have signed m name to this specification.

CHARLES F. `PYM.

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