US2177666A - Coating apparatus - Google Patents

Description

Oct. 31,1939 w, E MaKENZIE A 2,177,666

I COATING APPARATUS Filed Sept. 9, 1937 3 Sheets-Sheet 1 776 H '186' m9 180 m AME/W055 1 JMK Oct- 3 1939.. w. LE R. M KENZlE. ET AL COATING APPARATUS Filed Sept. 9, 1937 3 Sheets-Sheet 2 Patented Oct. 31,1939

UNITED STATES PATENT- voer-ice Ze -rm Machinery ofl leming- Oorporation, Borough V ton, N. 1., a corporation cl New Jersey Application September 9, 1837, Seth! No. 163,082 I his invention relates to coating. apparatus and is herein illustrated as embodied'in a machine for applying a stripe of coating material tothe marginal portions of the bottoms of shoes 5 and of the type illustrated in Letters Patent of the United States No. 2,100,341, granted November 30, 1937, on an application of W. L. Mac- Kenzie.

The application of a stripe of coating material 10 to the bottoms of shoes for theattachment of soles thereto presents substantial difliculties beplication of cement under pressure is carried out by means of a rubber nozzle, the outlet end of a which is maintained in' continuous contact with.

the work. It has been found, however, that the character of the surface to be'tr'eated is such that nozzles made of rubber and rubber substitutes are subject to continual abrasion so that their no life is not long. Furthermore, it is not practicable to immerse such nozzles in a solvent for the cement, during over-night and week-end periods, in order to keep the cement from hardening in the nomle passages, without causing deterioration 3g oftthenozzle itself.

, Accor in ly, an important object ofthe inven- I tlon'isto provide, for a coating apparatus, a metal nozzle which will be flexible enough to accommodate the irregularities of the work and 0 at the same time will deliver a continuous and A uniform stripe or stripes of coating material;

' These conditions have been met in the illustrated' construction and in accordance with a feature of the invention, by providing a plurality u of displaceable delivery members to the workengaging feet of which the coatihgmaterial is delivered. through individual tubes, the arrangesuch, that dual deiivery'membe go by't-the tubes. v

'lhis' desirable result has beenreachedin accordance withanother feature of the invention is not interfered with providing the feet of the delivery members pith-mes terminating in outlet openings .1 and yieldable tubes of capillary displacement of the indithe other ends of which are supported in communication with a supply of coating material under pressure. As illustrated, thetubes are individually yieldable and their delivery ends are slidably engaged in the passages of the feet of g the delivery members which latter, as illustrated,

have grooves extending forwardly in the feet and in which grooves the outlets of the passages open. Still another feature of the invention resides in the provision of a solvent-containing cup 10 positioned for the convenient reception of the nozzle when disconnected from its normal support. Preferably and as illustrated, this cup has a cover provided with a slot, into which the nonle may be thrust and also provided with 18 means for releasably clamping the nozzle to the cover. a

These and other features of the invention will be best understood in consideration with the following description taken in connection with a the accompanying drawings, in which 1 is a side elevation of the machine, the

supporting column being omitted;

Fig. 2 is an angular view of the solvent cup;

- Fig. 3 is a side elevation, on a much larger scale, of a part of the machine includin the nozzle and the feed roll;

' Fig. 4 is an angular detail view showing a spring-supporting plate used in the nozzle;

Fig. 51s an end view of the part of the mao chine shown mm. 3 and on a similar scale;

- Fig. 6 is an angular detail view of the tubeholder plate used in the nozzle;

Fig. '7 is an angular view of some of the de'; livery membersof the nozzle, snowing these in 35 separated positions, and I Fig. 8 is an angular view,.in a different diIection, of one of these members.

' A machineof this type, shown in the abovementioned MacKenzie patent, for applying a 0 band of cement around the margin .of the bottomof a shoe for use in the attachment of a sole thereto, comprises a frame I0, a portion of which is made hollow and provided with an integral side plate I! and a removable plate ll 45 held in spaced relation thereto by shoulderedbolts II. On the frame is mounted a cement receptacle 2| supplied from an invertedcanll and from this receptacle the cement is removed by means of a pump 24 and forced under presso sure through aflexible hose 2' and a nozzle 2., whenever a valve II is opened. The pressure in the hose-is indicated by awe-132- and the valve 3. is under the control of thefoperator through joonnectionsembodyingatreadlerodflanda horizontal turn rod 38 which is constructed to be readily disconnected from the valve handle at 38 when it is desired temporarily to remove the nozzle, as will'be later described. Work, such as a shoe 48 mounted on a last 42 and having an upper overlasted at 44 on the insole 46, may be provided with-a ridged metallic shank 48 and is held in inverted position in the hands .of the operator. As thus held, its margin ispresented progressively to the nozzle 28, being moved for- Such a machine may be-provided with a nozzle- I supporting arm 58. In this arm 58 there is clamped a rod 58 adjustable in and out with respect to the machine to position the band of cement and supporting at 'its' outer end a de-' pending carrier 88. The upper end of'this carrier is split and is'gripped in the desired position on therod 58 by means of pinch screws 82. This carrier is L-shaped and is forked at its lower end, providing two horizontally projecting arms 64 and 88 (Fig. 3) which, have supporting surfaces 88 and stop surfaces 88 to receive a nozzle body 18. This nozzle body flts snugly between the arms 84 and 88 and has lateral flanges'12 which rest on the supporting surfaces 88 (Fig. 5) and-when the nozzle is brought into assembled relation to the machine, are pressed manually into an operating position determined by the stop surfaces 8 9. As thus mounted, the nozzle body is held in position by a clamp lever 14 shaped like an in- I verted Y and mounted by'mean's of a pivot pin I8 on the carrier 88 with its forked lower ends I8 resting on the upper sides of the flanges I2 of the nozzle body-to grip them in position when urged thereagainst by means of a hand screw 88 threaded in the carrier 88 and bearing against the upper end of this lever '|4. a

.' The'application of a continuous and uniform band of cement to the bottom of a lasted shoe involves numerous difliculties, partly because of the changing contour of the bottom surface as successive portions of the margin are treated and partly becauseof the irregular surface found and-which results, forexample, from the presence of the shank piece 48'or from the wrinkles in the overlasted upper. These conditions were met successfully in applicant's earlier machine by means of a flexiblenozzle of rubber or the like. Such nozzles maintain contact very well with the surface to be treated but wear away rather ra'pidly and have to be replaced. 'Accordingly, the nozzle 28 disclosed herein is made of metal and is rendered flexible by being made up of a series I .of pivoted plate-like delivery members 8| assuming various forms 82, 84 and 88 (Fig. 7) but each, having a passage I24 (Fig. 5) terminating in an outlet or delivery opening 88 within a V-shaped. groove 98 extending forwardly along the workengaging, surface of the foot 83 of said delivery" member. It will'be noted tliat the members 82 and 88 are designed to be positioned 'atthe outer sides of the series of members and, for this reason and in order that the width of the stripe of cement may be-determined with some exactness,= these membcrshave d p d g edges 9 wh ch.

are somewhat longer than the corresponding ner edges 96, 98 so that they overcome any tendency for the cement to spread laterally. The inner 'edges 96,88 are cut away at the comers I88 to permit the cement extruded through these members to spread laterally inward and to merge with the stripes of cement supplied throughthe members 84 in which the lateral side edges I82 are each provided with notches I84 for a purpose similar to the purpose of the notches I88. The delivery of a continuous stripe or band of coating material is facilitated by the V-shaped grooves in the feet of the delivery members. These prevent the work from closing the outlets 88 and may be kept full of cementwith only a moderate pressure upon the cement. For most purposes, it is found desirable to position the sides of the grooves '98 at "an included angle of substantially ninety degrees with oneanother but with some particular cements, however, it may be found desirable to change the included angle betweenthe sides to sixty degrees.

When assembled, the nozzle delivery members 8'I, of which seven are shown here, are positioned side by side, with the lateral faces at the upper ends of the members in contact with one another and in order to facilitate assembly and disassembly of the nozzle, the members are mounted on a sleeve II8, thus making it-easier to take them out, as a group, as for cleaning. It will be'observed from Fig. 7 that the lower ends or feet of the members 84 are of full. width as at the. top but that -the intermediate portions are thinned or relieved, as at II2 (Fig. 8) to reduce, friction and any tendency to stick togetherand tafac'ilitate the introduction of solvent, as will belater described. The outer members and are relieved.only on the inner faces. .The assembled members are pivotally mounted between two flanges I I4 of the nozzle body and held there by a removable headed pin 8 passing through the sleeve 8 and held in position by a cotter pin II 8. It will be observed from Fig. 3 that the side flanges II4 of the nozzle body are cut away at I28' to reduce the friction between the outer members andthe body and to admit solvent. Downward movement of the members 8| below a predetermined level is prevented by contact of their upper ends 85 with the body I8.

Delivery of cement to the outletopenings 88 of the pivoted members is effected through a plurality of resilient, metallic, capillary tubes I22, the lower ends of which are slidably mounted in passages I24 in the feet 83, said passages terminating at exterior surfaces of the feet. in inlet openings adjacent to grooves I42 in the outlet openings 88. The lower. ends of the tubes are thereby protected against injury from contact with the shoe and at the same time the-free-' dom of movement of the members of the nozzle is not reduced as the tubes can slide in the feet;

of these members and can bend slightly as the members are tilted by upward pressure of the work. These tubes are assembled in a tubeby solder I38 filling, a previously formedv groove I almost 3 I48 in the plate. inasmuch as this groove is intersected by all the tubes- I22, a single soldering process is all that is necessary to hold the various tubes in position and there is no danger 5 of getting solder in the tubes. The introduction of the lower ends of the tubes I22 on the holder plate I26 intothe upper ends of the passages I24 opening laterally, i. e., at the under sides, of the 7 feet of the delivery members is facilitated by the m' provision of the semicircular grooves I42 in the under faces of thefeet of the members 81 in alinement with the passages I24. With the feet positioned substantiallyin alinement, it is only necessary for a user of the machine to take the tube-holder plate I26 and,.raisingit, to press with the thumb the lower ends of the tubes into the grooves I42. Springs I56 bearing against the delivery members resist the upward pressure and facilitate the seating of the tubes in these 30 grooves. Having pressed the tubes into the open grooves, the whole series of tubes may be entered in the passages I 24 of the feet by a slight lateral movement of the tube-holder plate I26.

The feet of the various members of the nozzle 25 are held resiliently in contact with the work, in spite of irregularities therein, by means of the above-mentioned 'springs I58, here shown as made of 'wire, the lower ends of which are curved upwardly and rest. in V grooves I52 (Fig. 8)- 30 formed in the upper edges of the members. .is with the tubes, these springs I58 are assembled in parallel positions. in a springcarrier plate I54 having a series of parallel grooves I55 in its lower face and a series of apertures leading up- 5 wardly into a groove I58. The upper ends of the springs are turned upwardly at substantially right angles and, passing through the apertures in this groove I58, are held in position therein by solder I60 filling the groove. It is easy, there- 4o fore, to position the spring carrier-plate I54 with the lower ends of the springs resting in the grooves of the nozzle members and then to attach it to the nozzle body Ill by means of screws I52 (Fig. 5).

45 Any tendency of the pivoted members of th nozzle to be stuck together by the cement is avoided by supplying small quantities of solvent, suited to the cement employed, to the upper side of the assembled nozzle through a tube I64 supported on a bracket I66 which is attached to the side plate I2 of the frame, solvent being supplied through this tube, drop by drop, from a receptacle I88 similar in construction to the common sight-feed lubricating cup employed in many machines. The 5 cup may be opened or closed by means of a finger "piece I10 and the delivery of fluid regulated by a thumb nut I12.

When the machine is not to be in use for a substantial period, over night, for example, it is 30 found convenient to'immerse the nozzle in ninth of solvent and, to simplify and hence encourage this step, there is provided a solvent cup I14 (Figs. 1 and 2) having a bracket I16 enabling it to be detachably secured to the frame of the machine by means'of a bolt I18 and a coacting wing nut I80. Solvent .is kept at the desired level in this cup I14 by means of .an inverted bottie I12 serving as a barometric fee'dtherefor. A cover I84 is mounted on the cup by means of a, 7 pivot pin I86 and held fllmly closed against it by awing nut I88. This cover hasa slot I88 just wideenough to receive the nozzle body I8, with the flanges 12 of the body resting on the adiacent top; surfaces of the cover. The cover is provided 7 with an upright I92 to which is pivoted a clamp I84 substantially like the clamp 14 on the machine and this may be used to grip the nozzle body to the cover when pressed into contact with the flanges 12 by a thumb screw I96. When the nozzle is not in the solvent cup, the opening provided by the slot I66 is closed by means of a pivoted flap I58. It will thus be seen that a -convenient arrangement has been provided in such a positionwith respect to the attaching point of the flexible'hose 26 that the nozzle may,

by loosening the screw 80 of the clamp 14, quickly be separated from its carrier 66 and, after separating the valve rod 86 but without detaching the gage or the valve casing I26, may be swung into position in the solvent cup. The cover I84 will be I tilted up about its pivot pin I86 to admit the nozzle delivery members to the cup, as the nozzle body is slipped into the slot I50, and will then be ,retu andffastened by the wing nut I88. The nozzle is then secured in the slot of the cover go I84 of the solvent cup by the clamp I94 and, hence, there is no danger of damage to the feet of the delivery members of the nozzle by reason of contact with the bottom of the cup and the correct position of the nozzle with respect to the .cup is assured.

In the operation of the machine, a piece 0 work is presented in inverted position, as indicated in Fig. ,3, whereupon the operator depresses a treadle connected to the treadle rod 34, thus opening the valve 30, and cement is delivered by the pump 24 to the nozzle. At the same time, the feed-wheel carrier 52 is moved outwardly to bringthe feed wheel 50 into contact with the side of the shoe and a progressive treatment of ,the marginof the'bottom of the shoe'is thus facilitated, it being understood that the operator supports the shoe at various angles necessary for the presentation of the uneven surface of the shoe to the nozzle, a uniform delivery of cement Q through the'spring-pressed delivery members of the nozzle being effected as the shoe is moved along to present the bottom margin progressively to the nozzle. During this traversing movement of the work, the nozzle will accommodate itself a to the varying surfaces of the shoe bottom by reason of the pivotal mounting of the delivery members. .At the same time, each individual delivery member is narrow enough so that its lateral edges remain substantially in firm contact with a portion of the bottom to which it is delivering cement. This enables a continuous and uniform stream of cement to be delivered through each member and these streams or threads usually merge to form a stripe of substantial width. u

Having described our invention, what we claim as new and desire to'secure by Letters Patent 0 the United States i8:

1. In a coating apparatus, a device for applying a stripe of coating material to a piece of 80 workand comprising a displaceabiy mounted rigid delivery member having a foot provided with a passage terminating at outside surfaces thereof inan inlet opening and an outlet opening, and .means for supplying coating material under pressure tosaid passage and comprising a flexible tube rigidly supported at its supply end and, directy inserted at its other end in the inlet opening ofsaid foot.

2. In a coating apparatus, a supportfa series ofseparate delivery members movably mounted upon the support independently of one another and adapted to rest in contact with the work, and

' a series of flexible-tubes secured in the support I moved from their pivotal 'vided with forwardly extending grooves in their ply, said tubes being individually connected to the delivery members.

3. In a coating apparatus, a device for applying a stripe of coating material to a piece of work v and comprising a plurality of spring-pressed deof tubes fixed at one end, the other ends of said tubes being 'slidable in said passages thereby per-" mitting displacement of said feet without interrupting the supply of coating material.

'5. In a coating apparatus, a device for. applying a stripe of coating material to a piece of work and comprising a plurality of displaceable plate; like delivery members having work-engaging feet, said members having passages extending through a portion of the length thereof and terminating in outlet openings in said feet, and means for supplying coating material, under pressure to said delivery members and comprising a plurality of tubes rigidly secured at their inlet ends and entering the passages in said feet at their outlet ends.

' 6. In a coating apparatus, a device for a'pply-. ing a stripe of coating material to a piece of work and comprising a plurality of pivotally mounted delivery members the free, ends of which are -pro-' vided with work-engaging feet having passages terminating in outlet openings, resilient means for holding saitl feet in contact with the work, and means for supplying coating material under pressure to said feet and comprising a plurality of tubes terminating in said passages.

7. In a coating apparatus, a device for. applying a stripe of coating material to apiece of work and comprising a plurality of pivotally mounted delivery members having work-enging feet prowork-contacting I surfaces, said feet havingpas: sages originating laterally thereof and terminatingin said grooves, and means for.supplying coating materialunder pressure and comprising tubes severally. connected to said passages, said tubes being feet.

yieldable to permit movement of the -8. In a coating apparatus, means for applying a stripe of coating material to a piece of work tand comprising pivotally mounted work-contact- I ing members having apertured feet, resilient means for holding said ,apertured feet in contact with the work, and means-for-slipn coating material under pressure to-the individual feet and comprising tubes connected with said feet adjacent to'their outlet ends and at points remounting. h 9. In a coating apparatus, a striping tool comprising a plurality of members pivotally mounted side by side in a group substantially in contacting relation and having apertured feet to rest on' a piece of work, resilient means for holding said work-contacting feetagainst the work, and means for supplying coating material under pressure to the apertures in said feet and comprising individual resilient tubes rigidly supported at a point spaced from the pivot of said members and Joined severally to said membersat points .adjacentto the outlet openings thereof.

10. In a coating apparatus, a plurality of individual coating-materiaI-applying members having each an outlet opening djacent to its point of contact with the work, said members being individually displaceable and spring pressed thereby to accommodate irregularities in the surface contour of the work, and means for supplying coating material to the outlets of said displaceably mounted members and comprising individual tubes leadingfrom a flxed chamber to points on said members closely adjacent to the applying ends thereof.

, 11. In a coating apparatus, a device for applying a stripe of coating material to a piece of work andlcomprlsing a plurality of displaceable delivery members positioned side by side, and individual springs for said members secured at one 12. In a coating apparatus, a device for applying a stripe of coating material to a piece of receive and position said springs, and means for holding said springs on said plate.

13. In a coating apparatus, a device for applying a stripe of coating material to a piece of work and comprising a plurality of displaceable delivery members, a plurality of springs ,associated therewith, and a spring plate having apertures receiving said springs and ,opening into a solderfilled groove.

14. In a coating apparatus, a device for applying a stripe of coating material to a piec'eof work and comprising a plurality of nozzle tubes, a plate having. a recess in which said tubes open at their inlet ends, passages in said plate for the tubes, a transverse groove intersecting the passages between the recess and the outlet ends of the tubes, and} solder in the latter groove securing the tubes.

15. In a coating apparatus, a device for applying a stripe of coating material to a piece of work and comprising a plurality of displaceable deliv- ',ery members, substantially parallel springs associated with said members, a spring plate having 1 spring-receiving positioning grooves, a groove transverse tosaidpositioning grooves, and apertures opening into said transverse groove. 16. In a coating apparatus, a-device for applying a stripe of coating material to a piece of work and comprising a plurality of nozzle tubes, a supporting plate therefor, a groove in the plate extending transversely of the tubes with both sides of the groove spaced from ends of the tubes. es for the tubes intersecting the groove, and solder inthegroove to secure the tubes.

17. In a coating apparatus, a device for applying a stripe of: coating material to a piece of work and comprising a displaceable delivery .member having a work-contacting 'foot provided with a passage terminating in an outlet in said foot, the,

other end of said passage opening laterally of said delivery member, and provided 'with an. open groove having a surface in alinement with said passage to facilitate the insertion of a supply 1 tube therein. I

18; In a coating apparatus, a'device for applying a stripe of coating material to a piece of work and comprising a plurality of pivoted delivery -members, springs tending to holdsaid delivery members in alinement againstwa stop. passages through theends of said delivery members opening laterally thereof, said members having open grooves in alinement with the passages, supply .tubes for the delivery members supported in alinement with one another, and means for supplying coating material through said tubes.

19. In a coating apparatus, a device for applying a stripe of coating material to a piece of work and comprising a nozzle body, a plurality of delivery members displaceably mounted on said body, a bushing extending transversely of said delivery members to hold them in a group, and a pin passing through said body and said bushing to mount themembers on the body.

ing a stripe of coating material to a piece of work and comprising a nozzle body, a plurality of delivery members displaceably mounted on said body, a bushing extending transversely of said 20 delivery members to hold them in a group, a pin passing through said body and said bushing to maintain the members on the body, resilient means urging said delivery members in one direction, and individual supply tubes for said members.

21. In a coating apparatus, a device for applying a stripeot coating material to a piece of work and comprising a plurality of-displaceable delivery members mounted side by side in substantially contacting relation, said delivery members having grooved, work-contacting feet, means to supply coating material to said grooves, said grooved feet being cut away at the leaving ends at :hose corners which are adjacent to another o '22. In a coating apparatus, a device for applying a stripe of'coating material to a piece of work and comprising a plurality of displa'ceable means to supply coating material to said grooves,

I said grooved feet being. cut awayat the leaving end at those corners which areadiacent to another foot, the outside members of the group edges.

24. Inacoatingapparatus. aframemember,a

'noaslememberhavingaportionrestingagainst 20. In a coating apparatus, a device for apply-- having their outer edges longer than the inner.

said frame member, -.a clamping lever fulcrumed on one of -said members and engaging the other member, and means arranged to swing said lever- 25. In a coating apparatus. a device for applying a stripe of coating material to a piece of work and comprising a nomle support provided with adjacent angularly related surfaces, a nozzle body adapted to be positioned .by engagement with said surfaces, and a pivoted, screw-operated clamp for holding said nozzle body against one surface.

26. In a coating apparatus, a device for applying a stripe of coating material to a piece of work and comprising a nozzle body, a nozzle support having forked ends which are spaced to receive and position a portion of the nomle body, said body having laterally extending flanges supported on said forked ends, and a forked clamp for pressing said flanges against said forked supp 27. In a coating apparatus, a device for applying a stripe of coating. material to apiece of work and comprising a nozzle, means for applying coating material to said nozzle and comprising a flexible hose securedat one end to the machine and at the other end to the nozzle, means for supporting said nozzle in anoperative position, a solvent cup secured to the machine and positioned to receive the nozzle when in inoperative position and without detachment of the hose connected thereto, and means for securing'said nozzleinsaid cup,

28. In a coating apparatus, a device for applying a stripe of coating material to a piece of work and comprising a nozzle, means for supplying coating material under pressure to said nozzle including a flexible hose and a'shut-ofl valve, an Op rator-controlled device for said valve separably connected thereto, a releasable clamp holding said nozzle in operative position, and a solvent cup on the machine within the reach of and comprising a detachably supported nozzle, a

solvent cup, a cover for said cup having a nozzlereceiving slot, a clamp for holding the nozzle in normal position upon the machine, and another clamp on the slotted cover of the cup.-

WHBUR LE ROY- MACKENZIE. m S. NOKES.

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