US1010800A - Lasting-machine. - Google Patents

Description

Patent@ Bec. 5, 19M.

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STATES 'Rt-"rinvii OFFICE;

CHAR Es' .Fi tpm, oF-E'ssnx ONTARIO, CANADA AssIG-Non or ONE-HALF To KRENTLER '.BRoTHns' coMPANYgfoF DETROIT, MICHIGAN, A coaPoRA'rIoN or MICHIGAN.

V5" I L f ,g r v Patented Dec. 5, 1911.

Applcatonled December 3, 1910. Seri'al No. 595,423.

,''oial? whom 'it may concern:

Be itV known thatl, CHARILES F. Prat, a

-n .the Province of ()n- ,l aliada, have invented ,i n, lv.lm prti \',einent, lin, L LastLiiig/lachi nes, ot wl i the., follbiying,description, in cnnecrior lniuthiftlie1accompanying drawings, is a frcsident Ot 1f -slpecilticaiomj ,like letters,y on the drawings 1t) .representing hke'partsij In that typevof lasting machine in which thex shoe is supported with a capability of more or less movement, particularly in the wiper type ot machine, considerable ditlitcult-y` is experienced at times in properly positioning and holding the shoe.' Accordingly inv invention aims to.,pr ovide, m connection 1: with lasting mechanisnn special means for coL .;-:operatingavithsaid. lastinginechanism in sefrcit'ring the perfect'lasting. 0f the shoe without 'i any 'possil'iility of. improper shitting or movir'ig'otithey shoe during the lasting operation. il` have herein illustrated my invention fl'iart-i-ciilarly. with reference to the lasting of 25..;.the-toe lStich a. lasting machine requires #that t'hetoaot thelast `shall be grippedv f'ahoic andvvhelow and thereby held against the r-.oii.i|'ile=x thrust ot the wipers, whichis mainly in a direction from the toe to the heel, hutas the top and bottom lines ot an ordinary last verge toward each other from the instep to the toe, so that the last is wedge shaped when viewed sidcwise, 1t has --"hee`nheretoforefnccessary to grip the shoe -l( h ittliinside -up in'fthe inachlne) with an .unpcr-olai'iip lagainstthebottom of the shoe "-:iir oppositionto-a lower clamp or rest against the shoe upper '(hetween the toe and. ".t'li'eiiistt-p) Ivitha pressure sufficientlysevcre., 4U. i to -piievent' thtV ldis] ilaccirient of thoslp oeilnidei'i1 .-fthesthrzust 4ori]iressure'-ot the wipers, 'lhis,

`v -clanipi'ngfpkissul'e is such that it-frequeptly injau'eslthmshoe and also hringsfganundue *isti-ahime Ul1 :-macliiiie,` and requiresa pos veut-iss:et'fjimveu'ient and ot gripmnliich in-yv upper-tingA including also resistance to sidewise thrusts), and` second, the maintenance of a gripping engagement or pressure on the bottom ot the shoe at or about. atixed locating point adjacent the toe whereby the wiping action is facilitated.

In the preferred construction of invention as herein shown, l take advantage of the fact. that. all lasts have a slope at the Shank and an opposing hollow on top of the. shoe (between the toe and instep), and I locate a toot or engaging part in position to engage the last or shoe at and against this slope of t-lie shank. I provide also a support to rest. against the'hollow on the top of the last as mentioned, and another support or gripper to engage the bottom of the shoe at that pointy with relation tothe wipers which it is desired shall constitute a locating point for the wiper action, etc., and preferably a fourth support at the heel.

My invent-ion will be more clearly apprehended in the course of the following description, taken with reference to the accompanying detailed drawings, in which I have illustrated a preferred embodiment of the invent-ion.

'In the drawings, Figure 1 represents in side elevation the head'of a lasting machine provided with my invention;` Fig. 2 is an enlarged fragmentary detail thereof, Ipartly in side lelevation and partly' in section, for more clearly illustrating the clamping feature of the invention; Fig. 3 is a transverse sectional view taken on the line 3 3, Fig. 2; Fig. 4, is a similar sectional View taken on the line 4 vlt, Fig. 2; Fig. 5 is a. cross sectional view on the line 5-5, Fig. 2; and Fig. `twis a cross sectional view on the line 6,

Tt`Lf.- 2- f "lnasu'uich as I lhavie"hereinI chosen to ,illustrate my invention 'in connection with fthe. kind ot' lastingmachine'set'forth and diiily claimed in my Patent, No. 938,512, patented `.\vovon'iher 2,1909, it` is {innecessary; vfor me to explain allith'e movements and' constriictionalfdetails, operation and iantages of the machine. "Using the same reference numeralsjashin said patent, it is i sullicieiit to say tliattlie-})e lest:il 1 supports a table 2 in whose hearing brackets 3 are journaled a driving shaft 4 and counter shaf t The wiper plates Q4 are supported trolled by springs 39, 42 and actuatedlbyA a push rod whose roll 36 engages a peripheral cam 37, all as explained in said patent. The rocker bar 1G is pivoted at 17 and has its roll 15 traveling in a cam path 11. The wipers are given a yielding move- .ment by a sprlng 33 on a rod 28,and closing tendency is given the spreaders by `springs d6. The rest 69 is carried by a. post (33 yieldingly supported by an intermediately pivoted lever 66 and spring 72, said lever having its cam roll 67 actuated by a cam 68 on the shaft 5, alocking device being shown at 65, 89 and 91 in con-.

nection with teeth 90 on'said post 63. All these details and others not mentioned may be and preferably are the same as in my aforesaid patent.

)verhanging the bottom 100 of the shoe and last, which are indicated at 101, is a branching support which coperates with and in'opposition to a rest 69 to position and support the shoe, with the .functions and advantages already set forth as c011- stituting the chief element of my present invention. For convenience, this stop supporting member is mounted on an intermediately pivoted lever 49 whose roll 50 is actuated by edge engagement with a cam 51. Mounted for vertical movement in the front end of said lever 49 is a toothed post 54 adjusted up and down by a Worm wheel 55 pivoted in said lever 19 to be hand operated for raising and lowering the post 54. At`its lower end the post 54 is provided with an arm I102 terminating at its lower end in a grippinfy clamp 103 and at its upper end provided with locking means and adjusting means (both of said functions being preferably embodied in a single mechanisni), herein shown as comprising a worm 10-1 having a head 105 to be turned by the' bandand engaging a worm wheel or worm teeth 106 on the upper end of thc arm 102, which is transversely pivoted at 107 in the lower end of said post. mounted in said post, preferably just below the arln 102` is a rearwardly extending arm 108 having at its rear end a. gripping clamp in the form of a foot or shoe 109 preferably serrated and shaped -to fit. the .slope of the shank already alluded to. as clearly shown in Figs. 2 and f1. This shank gripping clamp is provided with means for adjusting it and lclung 1t relatively to the post 54, and preferably with means for Also suitabhr changing its position laterally, said three functions being preferably embodied in a single device, although it will be understood that-#each may be embodied in a separate scope within the scope of my invention. As herein shown, the post-engaging end of the arm 108 is straight, and is provided with transverse serrations or teeth 110 to engage similar serrations or teeth 111 in the lower slotted end'of said post, which is provided at one side with a threaded thumb screw 112, herein shown as having a conical end 113, Fig. 3, in posit-ion to engage against the under side of said arm so as to Wedge the arm upward iirmly in locked position when the thumb screw is turned inwardly and yet permitthe arm` to be rotated axially or moved longitudinally when the screw is turned outwardly to a suticient eX- tent. The gripping clamp or foot 109 is preferably adjustable angularly with reference to the arm 108, being for this purpose pivoted on said arm 114 and provided with a worm wheel or sector 115 engaged by a worm 116 supported by said arm and" provided with a milled head 117 by which it may be operated. At its upperV end, the post 54 'carries an annular sleeve 118 to which is pivoted at 119 a rearwardly and downwardly extending arm 120 shaped at its lower end to conform approximately to the heel of a last, said lower end being preferably provided with a friction pad, herein shown in the form of two blocks 121 of rubber, Fig. 5, set angular-ly to each other. The arm 120 is normally held out-- ward in approximately correct position by a spring 122 oh a rod 123 loosely held to the post 5-1 by engagement with 'a ring or eye 124, said rod 123'passing through the arm 120 and adjust-ably secured by a hand wheel 125 in threaded engagement with the threadedv outer end 126. of said rod. The sleeve 118 is one convenient means of permitting the arm 120 to be swung laterally so as to conform readily to right and left lasts and to extreme crooked-lasts, said sleeve also permitting up and down movement so as to permit the rubber pad 121 to engage the heel at the right point for different kinds of lasts, 1'. e. high heels, low heels, etc. The connection of the; rod 123 wit-h vthe post also permits these various movements. i

In use, theoperator adjusts the arm 102 up or down as required in accordance wit-h the spring of the last. The next adjust-- ment to be. explained is the adjustment whereby the clamp 108 is caused to act as a locating point for the toe lasting. I regard this as a feature notonly novel, in my invention, but of considerable practical iming machine in exactly the correct position with reference to the 'wipers 24 and other lasting mechanism so thatthe-lasting operation is performed on thelsho'e to the best to secure the proper positioning and engagement of the clamp 103 with relation to the 'toe of the last by means of the adjustment of the shank clamp 109 (supple ineuted preferably by the heel clamp). The proper position of this toe clamp is indi` cated in F ig. 0, and in order to secure the .engagement of the toe. clamp in this loeating point, I loosen the screw 112 so as to permit thc arm 108to be adjusted longitudinally, and then Isliift said arm lengthwise toward or from the clamp 103 so that the shank clamp 109 will compel the last toassume the proper position with re-` lation to the toe clamp l103 when-the last is put into the machine and the three clamps or supports 09, 103, and 109 are brought into mutually clamping engagement with the last and the shoethereon. Having adjusted thearm 108 lengthwise and thereby `secured the proper position of the toe clamp 103 with reference to the toevof the last, said arm is clamped by its clamping screw 112, being first rocked-to the right or left to such extent as may be required in accordanee with the particular form of shank which it isto engage. Not only is -it desirable to shift this shank engaging Vfoot 109 slightly to accommodate rights and lefts, but some lasts slope more than others, and accordingly my invention aims to permit the foot of the gripper to con-form to whatever .particular shape of last may be used. In Fig. 4,'1 have purposely shown a somewhat extreme shape in order to bring out more clearly this feature of my invention. Also, as the slope ot' the shank differs almost infinitely, the foot 109 will be adjusted angularly with reference to its arm 108 by turnin the worm 116 one way 'or the other until the gripping surface of the foot 109 conforms accurately to the slopeof the shank of thc particular hist. Having thus adjusted the two clamps 103,109 with reference to the bottom clamp or support 09 so as automatif;

cally to hold the shoe in proper 'position fon,

lasting` the shoe and last are put into the machine, which is started explained in my patent aforesaid).thereby causing themA to he gripped and held. firmly in the posif, tion shown in Fig.I l. The operator then swings the heel clamp up or down and .to-

the right or left-,as-t-he case may bc, into propel' engagement with the heel end of the shoe and last, and clamps the heel clamp firmly in position simply by turning up the hand wheel 125, all of the adjusting movements thusfar mentioned being accomplished instantly by the experienced operator. Thereafter, as lthe lasting proceeds,

the rearward thrustfis-,largely taken by the shank gripping 'clamp' 109, supplemented by the heel clamp, and as the last is moved ver-v tically by the automatic lasting mechanism, the heel clamp is not permitted to shift-with reference to the shoe because it necessarily moves up and down with the shoe, being carried directly by the lever 49 in accordance with which the vertical movements of the shoe take place.

As the heel clamp or gripper is .not clamped until afterthe automatic clamping of the work by the three members (39, 103,

109 has taken place, t-lie operator is at liberty to set said heel clamp up means of the hand wheel 125 movement without danger 'of disturbing the shoe. This permits the heel clamp to relieve the-shoe of considerable ofthe endwise lia-rd by .f y a quick strain to which it has been heretofore suband angular position with relation to the machine, is neverthelessheld yieldingly as to vertical movements, in connection with the yielding supporting mechanism explained more at length in my aforesaid patent. Thus, as the wipers, in their wiping movement, require, because of extra thickness of leather or for any other reason, that the shoeA should yield downwardly, the mechanism at once permits of this downward. yielding movement without in the slightest disturbing or releasing the unyielding grip of the gripping mechanism, which continuesv to maintain an unreinitting grip on the slice at the four important points. Also, as the toe clamp is brought (by the adjustments previously explained) into exactly the right relation to the toe for securing the best lasting results, the wipers are thereby permitted to engage the leather with more certainty of an even grip or pressurethan ip my patented mechanism referred to.. This tendsto insurean even uniform pull or strain on the leather all around thetoe inasmuch as the clamp 103 constitutes a locating point foithe wiping -action (asiwell as for'all other Amovements pfthecomplete lasting operation). It will be undcrstoodalso that the relative A,adjustmentftoward and",from eachother of the membrs103 and 109 accommodates thema- .chinezto diferent sizes and different styles of lasts. Also by gripping the last at the three points mentioned, to wit, the slope of the shank, the toe, and the hollow on top of the foot, there is a two-fold advantage,

lsaid clamp bein iirst a certainty of position is secured which i insures accuracy of lasting, and second, the leather of the vamp which is to be lasted is left in position to respond to the best advantagel to the action of the wipers and various operations of the lasting process.

It will be understood that the wiping action and various lasting movements may be of any usual or preferred kind, preferably as set forth in my patentaforesaid, which movements will be l.understood from said patent and for that reason are not herein set forth in detail.

Having described my invention, what I claim as new and desire to secure by Letters Patent is,

l. In a lasting machine, the combination with toe lasting mechanism, of means to hold the last, comprising a clamp mounted to present a transverse backing forengaging, and restricted to, the shank slope of the last in a direction to resist endwise thrusts thereon from the toe lasting mechanism, said clamp leaving the bottom of the last forward of said shank slope unoccupied and unengaged` and other clamping means positioned for external engagement against the outer surface 'of the shoe being lasted and arranged to oppose said transverse backing of the first mentioned clamp and cooperative With the latter to firmly hold the last.

2. Inja lasting machine, the combination with toe lasting mechanism, of means to hold a last, comprising a clamp mounted to present a transverse backing for engaging the shank slope in a direction to resist endwise thrusts of thetoe lasting mechanism, adjustable `for fitting against the shank slopes of dii'erent lasts, and other clamping means arranged to oppose said transverse backing and coperative therewith to firmly hold the last.

3. In a lasting machine, the combination with ,toe lasting mechanism, of a clamp to engage the shank slope of a last in a direction to resist endwise thrusts of the toe lasting mechanism, said clamp being adjust'- abie transversely and lengthwise of the shank slope to properly embrace the same, and to engage lasts of different sizes, and other clamping means coperative therewith to firmly hold the last in operative position. 4. In alasting machine, the combination with means for stretching and shapingthe vamp over the toeof a last, of means for engaging the shank slope of the last for adjusting the last endwise relatively to said stretching means. 4

5. In a lasting machine, the combination with means for `stretching and shaping the vampl over the toe ot the last, and a'last clamp, of means engageable against the shank slope of the last, for adjusting the last endwise with reference to said stretching means, said adjusting means being arranged to cooperate with .said last clamp .to position and rigidly hold the last.

6. In a lasting machine, the combination with means to stretch and shape a vamp over the toe of the last, and clamps for the toe and top of the foot of the last, of means for engaging the last at the shank slope to. adjust the same lengthwise with relation to said stretching means, said adjusting means being arranged to coperate with said clamps to rigidly clamp the lastin adjusted position.

7. In alasting machine, the combination with clamps to engage the toe portion and the top of the foot of a last respectively, and wipers operative on the toe portion, of a shank clamp to engage the shank slope of the last, said elain'p beingadapted to coperate with theclamps aforesaid to rigidly hold the last against endwise thrusts imparted by said wipers. l

8. The combination with'means to clamp the bottom toe portion of a last, of an adjustable abutment mounted to present a transverse backing to the bottom shank slope portion and to act in a direction angular with relation to said toe clamping means, and a third clamping member mounted to engage the top portion of the last in a positionv and direction to oppose said toe clamping means and said abutment .to firmly hold the last and resist thrusts of the lasting mechanism.v

f). The combination with means to grip the toe portion of a last, and toe lasting m :ci anism, of a backing clamp, arranged to present a transverse backing to the bottom shank slope portion, said clamp being laterally adjustable to conform to the last shape.

10., The combination with means to support the toe portion of a last, and toe lasting mechanism, of a backing clamp to engage the bottom shank portion of the last, and means permitting adjusting of said clamp in two planes at right angles to each other to conform to the last shape.

11. The combination with toe lasting mechanism, and a support for the top of the last, of a toe clamp, and a clamp for the shank slopel ofthe last, said clamps having a common mounting and adjustment.

12. The combination with toe lasting mechanism, and a support for the top of the last, of a toe clamp, and a rearward clamp for the last, said clamps having a common mounting and adjustment, and means for adjusting either clamp on said mounting separately.

i 13. In a lasting machine, the combination with means-for supporting the front portion of a. last, comprising three opposed clamps separately mounted to act in converging directions, one thereof being the shank slope clamp, and toe lasting mechanism, of means presenting an endwise backing for clamping the heel ofthe last, said means being coperative with said front support to clamp the lastand 'withstand lasting thrusts.

la. In a lasting machine, the combination with movable means' for supporting and clamping the toe portion of the last, and toe lasting mechanism, of a backing to engage the heel, said backing having a mounting arranged to participate in the movements of the last. and its toe support.

l5. The combination with movable means for supporting and clamping the toe portion of a last, and toe lasting mechanism, of a heel backing having a mounting in common with and movable with said toe clamp, and an adjustment separately therefrom.

16. The combination with a support for the top of a. last, of a toe clamp, a shank slope clamp, and a heel clamp, said clamps having a common movable mounting and independent adjustments.

17. In a lasting machine, a last top support, a toe clamp, and a clamp arranged to press transversely against thev shank slope of the last, said clamps adapted to eoperate with said top support to rigidly hold the 'last against lasting thrusts.

18. In a lasting machine, a support for the last top, an opposed toe clamp, a shank -slope clamp arranged to oer a transverse 19.' In a lasting machine, a support for the top of the last, 'a toe clamp, a shankslopeelamp, and a heel clamp, said clamps and support having movable niountings so arranged that movement-s in the lasting operation Will be imparted to all in like Inanner simultaneously.

In testimony whereof, I have signed my name to vthis specieation, in the presence of two subscribing witnesses;

' CHARLES F. PYM.

Witnesses: C. R. STICKNEY, A. M. Donn.

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