US2325784A - Cementer for platform sole and wedge heel units - Google Patents

Description

1943- w. M KENZlE 2,325,784

CEMENTER FOR PLATFORM SOLE AND WEDGE HEEL UNITS Filed Aug. 14, 1941 3 Sheets-Sheet l Aug. 3, 1943. w. L. MacKENzlE 2,325,784

CEMENTER FOR PLATFORM SOLE AND WEDGE HEEL UNITS Filed Aug. 14, 1941 s Sheets-Sheet 2 Aug. 3, 1943.

w. L. M KENZIE v 2,325,784 dEMENTER FOR PLATFORM SOLE AND WEDGE HEEL UNITS Filed Aug. 14, 1941 3 Sheets-Sheet 5 and down with that support.

Patented Aug 3, 1943 CEMENTER FORPLATFORM SOLE AND WEDGE neenem'rs l a 1 Wilbur Maegan-z Beverly, was, assigmr it United Shoe' Maohihery Corporation, Fleming ton,N; J a corporation-of Newders'ey t =17 ApplicationAugust 14, 1941-;serial lficfllilfii'i'g 1 H *e Claims; (01. 12 91 I This invention relates to coating ,inachines for. shoe parts and is herein illustrated as em; 1

bodied in a machine for applying a marginal band of cement to a combined platform sole and wedge :heel unit. e v

Some shoes are provided with anintermediate or cushion sole whichsis frequentlycalled a plate form sole. Other. shoes have been providedwith so-called wedge heels extending from the back of the shoe to approximately the ball'linei 'In other cases, these two .partshave been comined into asingle unit having the general shape of a sole butdififering inthickness from front to rear bytwoorthree inches. The for'eparts of such units are frequently of felt and hence very flex ible. Sometimes, the tread surface of suohunits is substantially flat and the attachingjace is Y steeply curved, while in others the attaching face is "more nearly flat'and the surface beneath the instep is curved sharplyv so that the unit gives the effect oia sole having a modified Louis heel. It is common practice toappiy a band of cementvaround the margin of both the top and thebottom surfaces ofmost of such. units and in many cases one surface overhangs the other sothat gaging'inust be done by reference, to the edge of the'very surface which is to be coated. Those machines which are commonly employed for applying a marginalband of cement to soles are incapable of handling work pieces. of this type because of the wide separation which is required betweenthe supporting roll and the applying member when working at the heel end; Furthermore, such machines gage the work by a device whiehis located in substantially fixedvre lation to the work-supporting roll and moves; up

vice is impractical {or the very thick units men tioned above both because of the overhang ,al-; ready noted. andbecause, if the gage is supported on'a swinging arm which carries the work sup port, then, the relation of the upper corner .of the work to the applying member varies radicalily as the relatively short arm is depressed, and ituis impossible to .applya'ma'rginal' band in the desired position upon the uppersurface of a thick portion of thelwork. p .v

The object of this invention is tozprovideyan improved coating machine in whichthe work may be fed without excessive attention upon the part of the operator and in which the correct positioning of the marginal band of ooate ing material to be applied may beeasily' efiected splte ofwide variation in the formsot the work pieces. I

Such a gaging de= The gagingproblein hashere-joeen solved; in

accordance with ajfeature of the invention; by providing a driven gage roll' o ccup yihg;a fixed relation to a depending applying ineinber which inthe illustrated machine, is a yielplable-nolzele Conveniently, this feature maybe embodied the machine forjoementing the ,b clitorns of shoes for. the attachment of soles". whichis; disclosed in Letters Patent of theiUnited; States No.

2,100,341, granted November 39,; 1937, uponan V application filed in my name; inthat machine,- the dependingnczale is earriedupon asubstan tially horizontal arm pivoted to allow heightwise movement ,of the noszle and in' crder that the gage roll maybe supported on the arm and may be driven regardless ot-its heightwise Po ition, there has been employed,aasherein illustratedja drive shaft providedwithuniversal joints so that there is no interference with the imparteddriy ing movement when thenozzle-carryingarm is lifted. v wedge heel portions of the worlgand as herein illustrated, the work is vupheld in; engagement with the depending coatingmernber by a supporting roll mounted in a carrjier arranged for up a'nd-down movement; The feeding of the work is facilitated, too, by driving this support i ing roll through'a shaft containing-universal jointsso that it may be positivelyrotated: re= gardless of its heightwise position; The varia tions in height'wise position of this supporting roll are considerable, asnoted above. Further more, the illustrated;work supp orting roll is: held upwardly with a substantially uniforrn tension which is conveniently provided, by means ofa device of the clock-spring type,-; i v v These and other featuresof the invention; will best be understoodfrom a considerationoithe following specification taken-in oonnectionwith the accompanyingdrawings, in which I ,Fig; 1 is a side elevation otthe machine'with a side cover removed; Fig. 2- is an angular View; upon a larger scale showing a shoe unit presented to the, end of, the nozzle and resting against the gage roll and on the supporting-roll; V 1 r Fig.3 is a fragmentary view partly injsection of a clock-spring tensioning device used to lift i the worksupportingroll;and

Figs. 4' and5 illustratezplatforinfsoleand heel unitsof the more extremetypes s ,;fl;he working parts ofthe machine are-mount: ed in a hollow frame Ifl supported upon apedestal '1 12 heu e a t of t e ,l t me wmp i bac atefl l a d ma rcffi -werk e are To aocommodateyarious heights of "the" to a limit determined by the engagement of a stop screw with a ledge 32.

The particular coating-applying member illustrated herein is an extruding nozzle 34 of the articulated type andmay be constructed as illus-' trated in Letters Patent *of the United States No. 2,177,666, granted October 3 1,,1939 upon an application of W. L. MacKenzie et al. This nozzle is made up of a series of applying members 36 (Fig. 2) which are upwardly yieldable against the tension of springs 38 and which have outlet passages fed with coating material through capillary'tubes 40. This nozzle-which is adjustably supported upon the arm 22'is provided with coat ing material .under pressure, such Y. as cement, from a tank 42, and the cement is delivered to the nozzle by-means of a'pump 44 actuated from a drive shaft 46 and communicating with a nozzle 34 through a flexible hose 48. A valve 50 controls the outflow from the nozzle and this valve" is operated through-a jointed rod 52"by means of a rearwardly extending lever 54 which is connected through a rod 56, a two-arm lever 58, and a slotted link 60 to a treadle rod 62. The two-arm lever 58 is upheld by means of a spring 64 which, when the treadleinot shown) is released, operatesto close the valve 50 by moving the lever 54 against a stop screw 66. At the same time that this is done,'the nozzle-carrying arm 22 is lifted by the action of coacting levers '68 and I0 and in this the spring 64' is assisted by a treadle spring (not shown) which urges the treadle rod 62 upwardly. The lever 68, pivoted on the frame, is joined at its right end to the upper end of the treadle rod and at its left end has a pin camming against the long arm of the lever I0. In the short arm of the lever I0, is an adjustable screw. 12 which bears against a ledge 14 at the under side of the arm 22. By this arrangement, the nozzle 34 is'lifted at the completion of an operation as the fiow of cement is shut off by closing the valve 56. A U-shaped space is provided between the lifted nozzle and a work-supporting roll I06 into which a piece of workmay be moved laterally until its periphery rests against a gage roll 16 the periphery of which is beside the inner side of the nozzle 34. Since small quantities of cement sometimes accumulate at the nozzle outlets, it is better to have room so that the sole unit may be raised into contact with the end of the nozzle rather than pushing it laterally past the nozzle 'end and thereby wiping off any such accumulatedcement upon the edge of the work' This gage roll 18 has a cylindrical rubber face extending below the nozzle and is mounted at the lowerend of a vertical shaft 18 journaled in the arm 22 so that the 'roll has a fixed relation to the side of the nozzle. In order to make it easier'for the operator to feed the work, the gage roll 16 is driven through countershafts 86 and 82 both of which are journaled in thetilting arm 22 and these above-mentioned shafts are interconnected by miter gears. Power may then be supplied tothe shaft 82 from a vertical shaft 84 which is journaled in the frame and is connected to the drive shaft 46 by a worm and gear 86. A connection between the vertical shaft 84 and the vertical countershaft 82 is effected by means of an extensible shaft 88 whichincludes universal joints, such as that shown at 90, so that the driving connection to the gage roll 16 is effectivethroughoutthe range of tilting movement of the nozzlecarrying arm22. l

By thus gaging the position of the applied stripe of coating material by means of a member which occupies a fixed position on the nozzlecarrying arm, it is possible to position the band .of coating material just as desired regardless of theshape of the piece of work which is presented,

j by loosening set screw 92 and moving to right or left a rod 94 upon which a nozzle carrier 96 is clamped. 3 Thus, if the combined platform sole and wedge heel has the shape of the work piece W, which is shown in Figs. 2 and 4, then, in coatingthe marginal portion of the under'surface of this piece, it will be necessary to hold the work approximately in the position shown in Fig. 2 withlthe. normally upper portion of the wedge heel extending outwardly beyond a vertical line through the gaging point G so that any attempt-to gage the work'from itsthen lower periphery would be unsuccessful- The particular style of work piece W,.shown in Figs. 2 and l,

is squared at the rear end of its tread surface F.

7 of which is curved or less sharply squared;

Another of the more unusual types of work is that shown in Fig. '5 where a work piece W has a platform sole forepart S and a wedge heel H of a modified Louis type. On the under surface of the work piece W, the marginal bandto be coated extends from the heel breast line B forward around the sole part S and back to the'breast line onthe otherside. l It will be obvious that the problem ofproviding asuitable support for these pieces ofwork is rendered more difficult by .the radical. differences in thickness of the work between the foreparts and the heel ends thereof. The foreparts are of the order of one quarter of an inch thick, whereas the heel ends are sometimes from two to three inches thick. Accordingly, there is provided a work-supporting roll I99 having corrugated disk portions I62, and this roll is mounted upon a shaft I 64 journaled in a block I06 attached to the upper side of a plate I08 which is mounted upon thevupper end of a. fiat slide IIU. This slide is'guided for vertical movement in a side recess H2 of a grooved, vertically elongated block II 4 forming a partof an outward extension I I6 of the frame Iii. The slide is retained in this grooved block I I4 by means of a cover plate I I8, and upward movement of this slide is limited byan adjustable stop nut I26 threaded on a rod on the slide and which passes through a hole at the bottom of the block I I4. Since the direction of movement of the work support I66 is thus parallel to the'line of contact between the work and the'gage roll 16, there is no tendency for such movement to change the relation of the workto the gage roll.

It is necessary or very desirable that the work-. supporting roll I 00 shall be held upwardly be-.

neath the nozzle 34 with a tension which'is ;uni.-'

form throughout its range of movement. To accompish this by means of an ordinary helical wire spring coiled about a vertical axis, it would be necessary to provide a spring so long that it would extend nearly to the floor upon which the ma-' 123 in a casing l28 rotatable upon a stud I39 carried by the frame extension H6. Around this casing is wound a cable I25 fastened at one end to the casing and at its other end to a pin [24 extending through a slot I26 in the grooved block H4 and fastened to the slide H0. The spring is then wound within the casing I28 and its inner end is attached to a stud I30 rotatable in the frame extension I I6. To this stud, there is secured a ratchet I32, as shown in Fig. -1, and, when the proper tension has been'imparted to by said armlaterally of the pivot and above the work support thereby enabling the applying memer to be moved toward and away from the work support and coacting with the work support to provide a space into which a work piece may be moved laterally, and a gage carried on said pivoted arm beside said applying member and ex,- tending below'it for contact with the periphery of said shoe part moved laterally thereagainst. 7 2. In a machine for coating shoe parts having a curved periphery and a radically varying thickthe spring, the ratchet will be held in position by e a pawl I34. A bill bolt I2! is provided to hold the stud I30 and its ratchet in the adjusted position.

Despite the changes in position of the work support, easy feeding of the work is effected by driving the roll-carrying shaft I04 through an extensible shaft I36 which is provided with universal joints, such as that at I38, and is driven treadle rod is then depressed to allow the arm 22 Y with the nozzle and gage roll to drop slightly, bringing the underside of the work against the work-supporting roll I053. The operator will then be able with ease to guide the work regardless of its shape so that the marginal portion-of the'upper surface of the work piece W is presented to the nozzle and a band of coating material is ap plied along the margin of the face F. Having in mind the shape of the piece of work as it is posi tioned in Fig. 2, and as the periphery of the work is traversed, the slide I I0 carrying the work-supporting roll I00 moves up and down without binding and under a tension imparted by the spring I22 which is uniform throughout its range of movement. At the completion of the operation upon this particular margin, the treadle l is released to the position shown in Fig. 1, thereupon shutting the valve 58' and raising the nozzlecarrying arm 22 through the levers 68 and E8 to separate it from the work-supporting roll and to facilitate'the removal of the cemented piece of work. r

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

1. In a machine for coating sole-like shoe parts,

. a frame, a depressible work support, an arm pivoted on the frame, an applying member for coating the margin of the upper surface of such a shoe part. said applying member being carried ness, an arm, an applying member thereon the lower side of which is arranged forv contact with the upper surface of a pieceof work presented thereto, a cylindrical gage roll rotatably mounted on a vertical axis on said arm in fixed relation to and with its periphery beside said applying member to facilitate the application of a band of coating material to the margin of the upper side of said shoe part, and a yieldingly mounted work support beneathsaid applying member to hold the work in engagement therewith, said support being guided for substantiallyvertical movement, the line of contact. between the Work and the periphery of the gage roll being parallel to the direction of movement of the work support. 3. In a machine for applying aband of coating material to the margin of a shoe part having a curved periphery and a radically varying thickness, a depending extruding nozzle, a driven gage roll rotatablewith its periphery adjacent to the inner side of the nozzle engaging the periphery of the work to-guide it, a work-supporting roll,

a slide carrying said roll and guided for movement vertically substantially beneath said nozzle to accommodate the variations in work thickness, a spring resisting downward movement of the slide, and means-for driving said supporting roll irrespective of its heightwise relation to the machine.

4. In a machine for applying a band of cement to the margin of a shoe part, a depending nozzle,

a pivoted arm supporting said nozzle for bodily heightwise displacement, a valve controlling the fiow of cement to the'nozzle carried by said arm, and an operator-controlled member for closin said ,valve and raising said arm.

5. In a machine for applying a band of cement to the margin of a-shoe part, a depending coating applying member to the under side of which a piece of work may be presented, a work-supporting roll positioned beneath said applying mem ber and rotatable about a substantially horizontal axis, a vertically sliding support in' which said roll is journaled, means limiting the sliding movement of said support, and a spring exerting 1 a substantially constant lifting force on said sliding support irrespective of the amount of dis placement thereof. r 6. In ama'chine for applying aband of coating material to the margin of a shoe part, a frame, a

driving both said gage roll and said supporting" roll irrespective of the vertical movements of said rolls. r WILBUR L. MACKENZIE;

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