US1063271A - Toe-spreader. - Google Patents

Description

- A. A, TUE SHEADEB,

APPLIUA'MON FILED MAR. a, 1911,

239g?? j@ o Patente June 3,

`a citizen of the STATES ATENT V ALBERT A. MACLEOD, F SWAIVIPSCOTT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY. OF PATERSON, NEW JERSEY, CORPORATION OF NEW' JERSEY.

TOE-SPREADER.

MO-2,271. i

Pagen ted June 3, 1913.

Application liiled March 9, 1911. Serial. No. 613,297. l

To u?? Iliv/wm if may concern le it known that I, ALBERT A. Mac/Leon, fliiited States, residing` at Svanipscott, in the count-y of Essex and Sta e of Massachusetts, have invented certain himprovements in 'loe-Spreatleis, of

i -whichtl-t'e following description, in connec- ,h and lever at the tion with the accompanying drawings, is a specification, like reference characterp on the drawings indicating like parte in the several figures.

This invention relates to lasting machines and particularly to mechanism to be applied or incorporated in machines of the type known as bed lasting machines such as is shown, for example, in U. S. Lettprs Patent to Broek, No. 1,018,477, granted Feb. 27, 1012. In lasting the toe portieri of a shoe upper upon machines oi this type itl is customary for the operator to close the toe lasting plates in at 'a point somewhat belowjtho plane of the insole and to press them against theupper on the last while lie nieves them upward. lasting plates, or wipers, tend to smooth the upper out against the last, to draw it tight, and to gather the fullness to a point above the plane of the last bottom. Frequently a hand tool is used to press the upper out wardly upon the top faces of the wipers to increase their tensioning and smoothing effect. f v

An object of the present invention is to provide auxiliary means to be used in con netion 'with the usual-` toe lasting mech anism for more ellectually performing theV toe lasting operation and, as embodied, the invention comprises a novel spreader adapted to be attached to the toe-head of the lasting machine in position to be moved by a will of the operator against the upstanding hing and inwiping movements.

An important feature of -t-he invention The pressure and friction of the mai-gin olf4 the upper matei-iai at the toe to force the same outwardly` and downwardly against the toe 'lasting l plates or wipers during their upwardly wise of the shoe as heretofore proposed. As shown herein the spreader i rality` of parts connected front ends and there is operatively associated with the hand lever a device, in the form of anl underlying linger lever, for swinging the lateral parts outwardly about said connection. This outward movement of the side members or wings being a pivotal one spreads the upper at the sides and corners of the toe forwardly as well outwardly and thereby oifsets to some degree the rearward component of the usual advancing and closing movement oit the wipers which act, as is well known, to work the upper backwardly at the sides of the toe. The combined forward and outward direction of this expanding" movement oi' the spreader is also advantageous in its effect in laying the upper out on the wipers more free from Wrinkles than would result if the movement were directly forward only. The

vexpansibilit-y of the spreader also adapts it for use with dii'erent widths of lasts. Air other characteristic of the illustrated spreader, and one which distinguishes it :from these-called retarders7 known to me, is that its-sides or 'ways are made to extend backwardly to or even beyond the Wipers whereby it is effective in cooperation with the rear portions of the wipers in pro; ducing a stretching of the upper at the sides of the toe Where heretofore most dii'liculty has been experienced in lasting toes tightly.

In some classes of work it is desirable that the margin of the upper at the toe he and subjected to considerable tension. At the same time it is advantageous to smooth out the wrinkles of the tightly drawn npper so far as possible and to hold it under tension in its smooth condition during .the

"inward movement ofthe wipers over the last.

In .the use of the spreader as thus far deis made in a plus together at their seized scribed, it has lbeen:assumed Vthat the upper would he outspread ,and clamped down upon `Vthe `toe wipersand excellent results are ob- Another feature of the comprises means' cotip-= tained by so doing. invention,r however,

`erating with the expansihle spreader to clamp and hold the upper it against, the wiper, ture of the 'invention without gripping being to hold the up.`

an object of this fea to the toe-liead of the machine and the eX-.

pansible spreader. a j a w against which the expansible spreader may grip the upper. This jaw is prqeferably curved to substantially the shape of the toe portion of the shoe so thatspreader.

it may embrace the sides as well as the end of the toe and its innei edge has a contour correspondingsubstantially to that of the The lateral expansibility of v*he wings of the spreader enables the upper to be gripped at the sides of the 1'toe against the cooperating portions of the outer jaw. For some classes of work this gripping of the upper atthe sides of the toe may be sutticient without a likel gripping at the end of the toe because' it is at thesides of the toe that the action of the wipers is least effective in stretching and shaping the upper and also because withvsoine styles of last having high toes special difficulties are presented lin drawing the upper down to the last at the sides of the toe. l

In accordance with a further feature of this invention and one which is embodied in a preferred construction, there' is also provision for 4gripping the upper against the outer jaw at the end of the toe as well as at the sides and the force with which the upper is gripped at the end of the toe is or .may be lying finger variable independently of the force with which it is gripped at the sides of the toe. As herein shown, this isprovidedby -forming the outer' jaw rigid with the portion of the spreader which is attached tothe toe `lasting head and pivotally connecting the spreader `thereto at themiddle of the toe and above the jaws lso that downward pressure "on the hand lever will cause the inner jaw or expansible spreader to grip the upper against the inner face ofthe `outer jaw. By yaryng' thispressure on the hand lever with refereiicelto the force applied to the underlever for "expanding the spreader, the relative force with which the npp'eris gripped and held at the end and at thesides of thete can be varied. lt isto be notedy as an'adi'antage of the desribed conwhile with the left hand he advances and closes the wipers .by their usual operative lever or it may be raises and lowers them by a foottreadle'with which the machine of the patent is provided.

The amount. of downward pressure upon the hand lever of the spreader and the upward pressure uponthe underlying linger lever will be regulated by the sense of feeling and the requirements oithe work as. the operator watches the stretching and shaping of the upper.

rfhe 'foregoing and other features of the invention, includingcertain combinations of parts and important details ef construction will appear more fully from the following description of the illustrated apparatus and will then he pointed' out in the claiius.

` Figure l represents the toe lasting head of a lasting machine havingl ymechanism embodying my invention applied thereto. Fig` 2 is a sectional view of Fig. 1 taken in a plane located linst to the rear of the ends of the spreader blades. Fig. 3 is a, fragmentary longitudinal section of a modified construction embodying niy inventioin and Fig. 4 is a fragmentary horizontal section of Fig. 3

taken above the plane of the jaws in Fig. 3.

I have shown i'n Fig. l the toe lasting head of a lasting machine of the type shown in the patent above referred to with one embodiment of my invention applied thereto.

The toe rest of the lasting machine is indi-v cated at 2. 4 indicates one of the wipers, the corresponding one on the opposite side of the s'ole being hidden. These wipers are advanced and closed by the manipulation of the lever 6. In this type of machine the toe head is arranged to be raised and lowered by -rncans of a foot treadle mechanism shown in Fig. l and which is fully disclosed in the patent referred to.` A lever 10 has a handle at one end and at the other a slot 14 through lwhichrisesa post having a milled head 12.

crank lever 32. This leveris pivoted at 34 to the lever 10 and is provided at the end of its long arm with a finger piece underlying the handle of the lever l() wlierefrom this venience as the underlying linger lever. It will be clear that by manipulation of this lever 32 relatively to the lever l0 the toggle formed by the links 28 may be straightened -to move outwardlythe rear ends of the spreader plates 22 and spread the upper out over the wipers 4 and by depression of the 'handled end of 'lever 10, the upper can be gripped down upon t-he top faces of the wipers. Alternatively the 'spreader may be positioned opposite to the edge faces of the .115 lever 32 has been above designated for conwipers and by expanding the side members tlie upper may be gripped against the edge faces of the wipers which, in that case,

`serve as outer jaws coperating with the outer side face ot the spreader members for gripping the upper. It is contemplated, however, that when the spreader has only those elements thus tar described it will be used to clamp the upper down upon thevtop face of the wipers as shown in Figs. l and 2 of the drawings@ rlhe spreaderplatjes are held in. their contracted position by a helical spring 30 having its ends attached to the rear ends ot the spreader members To give rigidity to the rear ends of the spreader members relatively to the lever l0 a yoke r`l() is provided which is attached by a stud to the lower side of the lever lO'and has downwardly directed ends having sliding engagement with the rear ends of the spreader plates 22 or, it may-be, having pin and slot connections with the said rear ends. In the most general use ot this form of myinvention, after the upper has been outspread over the wipers the handle olf the lever 10 is grasped by the operator and the finger lever 3Q pressed to cause the members 22 to lie over the edge of the wiper and to spread and wipe outwardly over the upper that is onv the wipers to smooth it tree trom Wrinkles. The handle 10 is then depressed and the plates 22 clamp the upper against the wiper plates, which are then moved upward to 4tension the upper and shape it to the last and then inwardly to lay it into A lasted position. During the advancing and j -Emanipulations described or closing movement ot the wipers for laying the upper into lasted position upon the margin of the shoe bottom the spreader may or may not accompany the wipers or may acm company them to a limited extent in accordance witlrthe judgment of the operas tor. For example, it' he sees that the upper is suiiiciently stretched at the end of the toe but would be better fen additional stretching at one or both sides of the toe he Will allow the spreader tomove rearwardly with the Wipers and relatively to the post l2 While with the finger lever 32 he will compel the spreader at one or at both sides ot the toe to continue to hold the upper outwardly so that the wiper in closing is obliged to overcome .the frictional resistance or retarding effect of the spreader. The expanding-feature not only enables the operator to adjust the size of the spreader to correspond to different sizes and shapes of last toes, but enables him to first clamp the upper at the point of the toe and then by expanding the lspreader to extend the gripping or clamping action toward the ends of the wipers, this method of manipulation tending to rub or iron out any folds or incipient wrinkles in the upstanding margin of the upper. The any of them maybe repeated if necessary to shape the upper material properly to the last when it has been so shaped andthe wiper plates the jaws of a have been brought in over the edge of the insole to clamp the upper thereagainst, the operation et wiring the toe, or otherwise securing the upper, is performed.

ln Figs. Band l a more complex form ot the spreader is illustrated in which au outer jaw lT is added to cooperate with the jaws in t-he manner earlier suggested. Also, in the construction embodying` this outer jaw, the lever l0 is preferably, although not necessarily, termed in two parts which 1 have designated in Fig. asll and l5, these parts being connected at 13 by a hori'fiomal pivot. The part l5 has a downwardly extending portion which rigidly supportsI the jaw l? which extends about and is co-extensive with the spreader members rl`he hiember 15 attached to the vtoe-head in rue same manner as the end ot the lever l0 in Fig. l, but a stitl spring l!) is preterably provided bcneatlrthe part l5 to hold it lirmly against the head oi the post lil. ln the use ol" the spreader as thus equipped the upper will be outspread over the wipers and against the inner laee of the jaw 17 while the portions of the spreader located inside and abovesaid jaw 1T are turned up into the dotted line position in Fig. Said parts will thereafter be turned down and the expansible members 22 will be spread to grip the upper tree Ylrom wrinkles against the outer jaw by force determined at the sides and the end of the toe respectively by the pressure applied upwardly on the linger lever 32 and downwardly upon the hand lever l0. lf the upper is gripped by the spreader while the wipers and thereitore the spreaders are a substantial distance below the plane of the last bottom;I then the rising movement. of the wipers with the spreader will cause a very substantial stretching ot' the upper upwardly, the spreader jaws servA ing as. gripper-s which, after having been closed upon the upper,V are uplitted by the engagement ofthe wipers with them or with the jaw 17 as will be plain from Fig. 3. As l am advised, it is new by this invention to aliiplg/.to the edge ot an upper a gripper or clanijrand then to raise the wipers and cause them by their engagement with said gripper or clamp fast. to ythe upper edge to pull or stretch the upper upwardly preparatory to overwiping the upper. This feature ot the/ invention to be distinguished from the suggestion in the patent to lhiilen and Lake'No. 502,506 of an upA per which has been prepared for lasting by attaching permanently to its edge a` rib that' will prevent it :from slipping' between gripper. By expanding the inner jaw the gripping elfect is caused to take place progressively and simultaneously upon both sides of the jaws from the portion rst gripped at the toe toward the ends of the jaws. For the purpose. otfincreasing lili) sure may be applied by the inner to the outer jaw at the end of the toe before the portion 15 will be forced out of its normal horizontal position. The slot 14 permits the device to be adjusted longitudinally of the shoe to bring the gripping plane of the jaws somewhat beyond the plane of the edge of the toe of the insole so that as the' toe head is raised and the upper brought under ten` sion it Will meet with a minimum of frictional resistance by reason of its engagement With the toe portion of the last and will be held away from the edge or feather of the insole and the raising 'of the feather from the last, because of the friction of the upper against its edge, will be avoided. In the use of this form of the device the operator will Wipe up the toe portion of the upper with the lasting plates, as described, and will then bring down the inner jaw 2Q inside the upstanding margin of the u )per at the toe by movement of the lever 11 a out the pivot 13 and Will grip said margin of the upper stock as described. The toe head may now be further raised and the desired tension applied to the upper by advancing the wiper against the upper to force it in beyond the edge of the last, or the upper may be tensioned by simply raising the toehead While the upper is held betiveenrthe jaws as described and the wipers may be Wiped in When they have been raised above the upper surface of the insole to hold the 'upper in lasted position during the opertion of wiring the toe or otherwise securing the upper temporarilyin lasted position.

Having now described my invention, what I claim as new anddesire to secure by Letters Patent of the United States is 1. A toe lasting mechanism having, in

l eon'ibination, a vertically movable head, in-

ivardly moving wipers thereon, an expansible spreader, and manually actuated mechanism for positively spreading the upper out over the wipers and clamping it thereon with a degree of force controlled by the operator during the ,vertical movement of the head for stretching the upper.

2. A toe lasting machine having, in coinbination, a vertically moving head, inwardly movingwipers thereon; a spreader pivotally mounted upon the toe-head, and arranged for manual manipulation against the upstanding margin of the toe portion of the upper to clamp the same against the Wipers with a force controlled by the operator during the movement of the Wipers.

3. A last-ing machine having, in combination, a vertically moving toe-head, inwardly moving Wipers, a spreader and operating means for 'forcing the upstanding marginal portion of the upper against the Wipers atl the end of the toe, and additional means for thereafter progressively advancing the operative action of the spreader toward the ends of the Wipers at. the sides of the toe..

4. A device of the class described, 'comprising spreader plates pivoted together and shaped, when their free ends are moved outuf'ardly, to conform to the curve of the wipers, manually operated means for moving the spreader forwardly over the Wipers and down upon them, and means also manually operated for moving outwardly t`v free ends of. the plates.

5. In a .lasting machine, a vertically movable lasting head, forwardly and inwardly by which relative movement of said parte, may be effected to expand the spreader during its operation on the Work.

7. In a lasting machine, the combination with vertically movable toe embracing Wipers having forward and closing movements, of means comprising cooperating gripping members conforming to the shape of the toe for seizing the upstaiiding margin of the toe portion of the upper and holding the same against. movement in its plane'during the iniviping movement of the Wiper and a manually operated device by which said means may be given, independently of the wipers, an upper tensioning movement.

S. In a lasting machine the combination with a vertically movable head and iiiivai'dly moving toe embracing Wipers thereon, of upper grippers independent of the Wipers arranged to close upon all portions of the upstanding margin of the toe portion of the upper and be moved by the Wipers to ei'fect tensioning of the upper by the upwardly moving toe-head.

9, In a lasting machine the combination with a vertically movable toehead and inwardly moving wipers, of gripping javvs coi'nprising a rigid outer jaw and an eX- pansible inner jaw said expansible jaw being` mounted for movement relatively to the rigid jaw to clamp the upper first at the .middle of the toe` and means whereby the gripping effect may be extended longitudinally of the gripping surfaces in both directions to smooth the upper and then hold the lsame against the tensioning torce applied by movement of the wipers relatively over the last.

ll). A device ot' the class described, comprising; a rigid jaw adapted to be mounted upon the toe-head of a lasting machine, an enpausible jaw adapted to cooperate with the rigid jaw, means 'for effecting the forcing ol a portion of the expansible jaw againstthe toe portion of the rigid jaw, and

means for expanding the expansible jaw against the side portions of the rigid jaw.

ll, in upper seizing device, comprising a rigid jaw, a cooperating" jaw constructed and arranged 'for change of contour into and out ot corresl'iondenee with said rigid jaw, contour changing? means tor said cope'ating jaw, and means for operatingthe jaws.

l2. A device of the class described, having in combination, a rigid jaw contoured to conform substantially to the shape of a toe portion of a shoe sole, a cooperating jaw, and means for operating the jaws, said jaws being constructed and arranged to apply tripping pressure to an. upper placed between them, lirst at. the portion ot the toe having1 the ,Lreatcst curvature, and to eX- tend the gripping action 'in both directions from said portion.

123. in a lasting machine having a vertfically movable toe-head and forwardly and inwardly moving` wipers, the combination of a spreader having two portions pivoted together at the toe, a hand lever for forcing the portionot the spreader at. the pivot over.

and down upon the Wipers and a hand lever independent of the Wipers whereby the free.

ends ot the spreader may be expanded over the end portions of the wipers.

le. In a device` or the class described, a spreader support, comprising' a lever pro vided with a handle at one end, a slot at the other, a headed stud passing through said slot and adapted to be secured to the toehead ot a lasting machine, spreader plates pivoted to each other and to said lever upon the under side thereof, and means for separating the free ends of the spreader plates.

l5.V ln a device of the class described, a spreader support; adapted nto be mounted upon the toe-`nead ot a lasting machine for movement longitudinally of the shoe and tor lateral swinging*'movement and having a depending` projection, spreader blades pivoted to said projection, links connecting the tree ends ot the spreader blades, and means for operating the links to expand and contract the sineader.

1.6. ln e. devcem't' the class describedpa spreader support adajted to be mounted in the toe-head ot a lasti machine t'or movement longitudinally of me shoe and for lateral swinging movement and having a dependingI projection. spreader members pivoted to said projection. and a yoke secured to said support and havingv dependingr ends restingr upon the free ends ot' the spreader member, and means it'or expanding` the lspreader.

1T. In a lasting` machine, upper wiping'- n.eans to press the upper inward over the insole at the toe. upper `gripping means com prisinf@r an ulrvielding jaw located outside otI and extending above the toe portion ct' the upper, an inner jaw coperating and coextensive with the outer jaw, and means arranged for operation at the will of the operator for changing the grippiiig surface of said inner jaw into and out ot conformity with the gripping surface o' said outer jaw.

18. A' toe lasting mechanism comprising a toe rest, a toe embracing wiper` means for effecting' relative verticalmovement of the last and the wiper to stretch the upper toward the plane of the shoe bottom, and ineens constructed and ar anged to grip and hold the edge of the upper independent of the wipers and for preventing' the upper-trom slipping' between the wiper and the last duringl such relative movement. l

19. A toe lasting mechanism comprising a toe rest. a toe embracing wiper, means for effecting relative vertical movement of the last and the wiper to stretch the upper toward the plane oil tho lshoe bottom. and curved jaws constructed and arranejed to be afiixed to the edge .ot the upper tor such .vertical movement and to be engaged b'y the wipers during such movement or alternatively to be manually lifted independently of the Wipers.

20. A toe lasting" mechanisn'i having, in combination, toe embracing wipers, operating means for advancing and closingthe wipers, a spreader arranged to clamp the upper in outspread condition over the wi pers, and manual' means for expanding the spreader laterally to clamp the upper at the sides ot' the toe preparatory to the closing of the Wipers over the last bottom.

21. A toe lasting' mechanism having, in combination,- toe embracing Wipers, operating means tor advancing and closing the wipers, a spreader comprising` a band tool and having a hand lever by which it is movable forwardly to spread the upperat the end of the toe over the wipers, and another hand lever for expanding the spreader laterally to spread the side portions of the upper over the Wipers at the sides ofthe toe.

22. A ytoe lasting mechanism having, in combination, toe embracing wipers, operating means for advancing and closing the wipers, a head carrying wipers, and a iso spreader pivotally and slidiiigly connected to said head and extending rearwardly over the wipers with a handle located over the slioe bottom, said spreader having provisionv for forward movement to smooth the upper over the top face ot the wipers and being laterally expansible to spread the upper at the sides of the toc outwardly over the wipers.

23. A toe lasting mechanism having. in combination, toe embracing wipers, operating n1 laus for advancingl and closing the wipers, a spreader comprising lateral wings substantially co-extensive with the wipers and pivotally connected at. the middle ot` the toe and extending rearwardly, and manual means tor expanding said wings to spread and liold the upper from the sides ot the toe' over the wipers'independently of the operation of the wipers. l

24. A toe lasting mechanism having, in combination, toe emb acing wipers, operating means for advancing and closing the wipers, an expansiblc spreader having a hand lever by which it may be pressed down upon the upper, and an underlying Finger lever by which it my be laterally expanded to spread the upper t'roiii the sides ot the toe `,over the wipers.

25. A toe spreader for use with the toe lasting mechanism, said spreader comprising expansible side members, a hand lever by which it may be forced downwardly into clamping engagement with the upper 'and an underlying nger lever by which its side members may be moved outwardly to spread tlie upper and the sides of the toe over the wipers.

Q6. An expansible spreader for use with toe lasting mechanism comprising an outer curved jaw and inner jaw members pivotally connected together at the end of the toe, and means connected to the free ends of the jaws for expanding said inner members to cause them to grip the upper against the outer jaw.

2T. An expansible spreader for use with toe lasting mechanism comprising an outer curved jaw and inner jaw members pivotv'ally connected together at the end of the toe, means for actuating said inner members to grip the upper at the end of the toe against the outer liaw, and additional means tor expanding said inner members to grip the upper at the sides of the toe against the outer jaw.

2S. lIn a device ot the class described, an

'outer jaw curved to receive the upper ot' the toe portion of the shoe, an inner jaw comprising relatively movable members, operating means for actuating the inner jaw forwardly to grip the upper of the end ot the toe and for actuating said members 1aterally to grip the upper at the sides of the toe, said operating means having provision for varying at will the force with which the upper is gripped atfthe end and sides of the toe.

` 29. In a device of the class described, an

outer aw curved to receive the upper of the tee portion ot' the slioe, an inner jaw comprising relatively movable members, a lever l0 t'or actuating the inner jaw members forwardly to grip the upper ot' the end ot the toe against the outer jaw, and the underlying finger lever 32 for spreading the inner members to grip the upper ot the sides of the toe against the outer jaw.

30. A toe lasting mechanism having, in combination, toe embracing wipers, operatwipers, and a spreader arranged to clamp the upper independently of the Wipers in outspread condition relatively to the wipers at the end and sides of the toe.

31. A toe lasting mechanism having, in combination, toe embracing wipers, operating means tor advancing and closing the wipers, and a spreader arranged to spread the upper free from wrinkles over the wipers and comprising relatively movable mem bers to clamp the upper independently of the wipers at the end and sides of the toe and hold it during the operation ot the wipers.

32. A device of the class described having, in combination, a continuous toe shaped outer jaw, a jointed inner jaw, and means for forcing the inner jaw toward the outer jaw to spread the upper thereagainst and to hold the upper gripped between the aws.

33. A device of the class described having, in combination, a rigid jaw having a face arranged in substantial parallelism to the outer contour of the toe of a last, an eXpansible inner jaw and means to operate said inner jaw to spread the upper into contact with the tace of the rigid jaw and hold the upper in gripping engagement therewith.

84. A device of th'eclass described having, in combination, a continuous rigid outer jaw having its inner face4 arranged in substantial parallelism to the contour 'of the toe portion of a last bottom, an inner jaw composed of ltwo members jointed together and conforming, when the outer ends are separated, to the contour of the tace of the outer jaw, means for forcingthe `iointed portion of the inner jaw against the central portion et the outer jaw, and means for separal ing the free ends of the inner jaw members to expand the upper at the sides of the toe and grip it against the end portions of the outer jaw.

85. t machine of the class described havin r in combination, wipers, grippers comnig means for advancing and closing the.

prising a curved outer jaw and an inner'` sides and end of the toe of the shoe and spread it outwardly against the outer jaw, and means fox-.actuating said Wipers to further tension and overlay the upper.

36. A toe lasting mechanism, having in combination, foe embracing Wipers and 0perating means for advancing and closing the wipers, a spreader and means for applying pressure directly to the two end portions of the spreader.

37. A toe lasting mechanism, having in combination, we embracing Wipers, operating means for advancing and closing the wipers, a spreader, and means for applying prem'm'e at the two ends of the spreader simultaneously to hold the upper more securely at the end. of the toe and at the ends of the tip seam than at the corners of the toe.

38. A toe last-ingmachine, having in combination, toel embracing Wipers, operating means for advancing and closing the Wipers and al bow-shaped spreader and means for positively holding down the ends of the bow against the overlastecl upper at the ends ofthe tip seam.

In testimony whereof I have Signed my name to this specification in the presence of two subscribing Witnesses.

ALBERT A. MACLEOD.

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