US2225065A - Nozzle for machines for coating shoe bottoms - Google Patents

Description

Dec. 17, 1940. w, MacKENZIE 2,225,065

NOZZLE FOR MACHINES FOR COATING SHOE BOTTOMS Filed June 3, 1938 4 Sheets-Sheet l Dec. 17, 1940. w. L. MacKENZlE 2,225,065

NOZZLE FOR MACHINES FOR COATING SHOE BOTTOMS Filed June 3, 1958 4 Sheets-Sheet 2 44 f 'fia Dec. 17, 1940. w, MacKE NZIE 2,225,065

NOZZLE FOR MACHINES FOR COATING SHOE BOTTOMS Filed June 3, 193B 4 Sheets-Sheet 3 3J6 366 WM 404 446 I l3.

Dec. 17, 1940. w, MaCKENZIE I 2,225,065

NOZZLE FOR MACHINES FOR COATING snos BOTTOMS Filed June 3, 1938 4 Sheets-Sheet 4 2K1: 142% in} i -411. 24%

.. a mi Patented Dec. 17, 1940 UNITED STATES PATENT, OFFICE N O ZZLE FOR- MACHINES FOR COATING SHOE BOTTOMS Wilbur L. MacKenzie, Beverly, Mass, assignor to United Shoe Machinery Corporation, Borough of Flemington, N. J., a corporation of New Jersey Application June 3, 1938, Serial No. 211,530

19 Claims.

In coating the channels of the soles of welt shoes, a substantial change in the characteristics of these channels is found along the'l ength of the channel. For example, a variation in'the width of the channel is found between the forepart portion and the shank portion, thus rendering it desirable, when the cement is to be applied by an extruding nozzle, so to arrange the machine that these difierences may be accom modated. Such a nozzle to be successful must also be arranged to apply a uniform coatingboth to the relatively flat forepart portions of the base ofthe channel and to the portions of curved'and irregular contour found at the break of the sole at the ball line and in the shank portion. One satisfactory embodiment of a nozzle suited to meet these requirements is illustrated in Letters Patent of the United States No. 2,195,416, granted Apr. 2, 1940 up my copending application and is claimed in a divisional application Ser. No. 214,262, filed June 1'7, 1938. One object of this invention is to'provide an improved formof nozzle for this purpose which will accommodate even greater divergencies in the character of the area to be coated and will apply a coating uni form both in thickness and in distribution.

In attaining this object, the nozzle, comprises two sections, one, of which is fixed and Barranged to apply a coating to the channel flap and a narrow adjacent portion of the channel base.

The other section is a yieldable arrangement,.

embodying a plurality of tiltably mounted, spring-pressed delivery members, each one of which applies a narrow band of cement and is mounted to accommodate marked changes 'in the heightwise contour of the work.

In order that thenozzle may be arranged for coating both the narrow forepart portions and the wider shank portions, there is provided, in accordance with an important feature of the invention, an operator-controlled device for controlling, in anozzle made up of a plurality of applying members, the fractional portion of those members which is being supplied with coating material. In its illustrated embodiment, this mechanism includes an operator-controlled valve arranged in one position to supply one portion.

of the applying members and, in a second position, to supply another portion.

It is the practice of sho manufacturers to vary the shape and width of the shoe channel in different lots of shoes. Changes in style will account for part of the variations while changes in size account for an additional part. The-usefulness of a nozzle for a machine of this type depends, therefore, to a considerable extent on its ability to be used for varying types of shoes. Accordingly, another feature of the invention resides in a novel arrangement, applicable where a plurality of delivery members is employed which may be divided into groups, and arranged to determinethe number of delivery members in the respective groups. As illustrated, the nozzle has aplate provided with passages for supplying Q,

coating material to a number of delivery members and in which a removable member or plug is associated with this plate for determining the division of the members into groups. 1 7

These and other features of the invention will be described in the following specification, taken inconnection with the accompanying drawings, in which' j Fig. 1 is an angular View of the head of the machine, showing the nove1 nozzle mounted thereon andjwith the forepart of a shoe presented to the nozzle;

Fig. 2 is a fragmentary view, on a larger scale,

of parts of the nozzle, showing in section the shank portion of a shoe presented to the nozzle;

Fig. 3 is a section taken heightwise of the yieldable portion of the nozzle along the line III-III of Fig. 13; V

Fig. 4 is a planview of the tube-supporting platewith a controlling plug therein; l 1

Fig. 5 is an angular View of the plug removed from the tubeplate; I

Fig. 6 is an angular view showing the inner face of one of the plates forming the fixed portion ofthe nozzle;

Fig. 7 is a view of the inner face of the associated plate of this'fixed portion ofthe nozzle;

Fig; 8 is an angular view of a fragment of the fixed-portion showing the outlet slots therein;

- Fig. 9 is-a view of the other face of the plate shown Fig. '7; 1

' Fig 10 i's-a detail'view o f the work-contacting end-of one of the delivery members in the 'yieldable portionof the nozzle; l

FigQll is a vertical section block and the valve which controls the admission of cement thereto; I Fig. 12 is aside elevation of the valve, taken from the left .of Fig. 11;

through the nozzle the horizontal;

the manner in which cement is applied to. the.

channel in the shank portion of a shoe;

In Fig. 1, the nozzle is shown as mounted on a portion of a machine of the type-illustratedinthe. above-mentioned Letters Patent No. $195,416.

This machine comprises a frame I2 having an upper arm I4 at the outer end of which is supported a casting I 5 having spaced horizontal brackets I6 between which is positioned the body (Fig. 11) or main block I8 of the nozzle.

ends 26 of which are forced against the under side of the. brackets I 6 by a screw 25, the point of this screw being turned against a portion of the block. I'S- to clamp the nozzle in position on the machine. The nozzle has a fixed section orportion 30 (Fig. 2) for coating the inner surface of the'upstanding fiap c and an inner margin of the base of the channel in the sole of a shoe S. The point of this fixed nozzle portion rests at the rootv a of the channel, the'sole of the shoe being held in a substantially horizontal plane as it is manipulated to carry successive portions of the channel past the nozzle. The nozzle also has a yieldablesection or portion 3I arranged to deliver cement to the channel'bed'b which, around the forepart of the shoe, will have a substantially uniform width and willbe approximately horizontal, while the corresponding channelbed 5" (Fig. 2) at the sides of the shank portion of the shoe will becurved and somewhat inclined to It is in order to accommodate this change'in'the heightwise contour ofthe'channel bed thatthe yieldable portion 3| isprovided'. Cementis supplied to the nozzle through a flexible-pipe 92-from a receptacle (not shown) by pressure supplied bya suitable pump (not'shown) andthe admission of cement to the nozzle is cont-rolled'by a valve 95,- thespigot 91 of whichmay be turned by an operator-controlled member, suchas a, treadle (not shown), through a jointed rod I08 having a forked portion which fitsover apin- I extending through a passage-"III and crossing the forked end H3 (Fig. 1-10 of thespigot.

The presentation of. successive portions of the channel to the nozzle may be effected manually withthe assistance of a feed roll I 22 mounted at the upper. end; of. a shaft I 24. which is received. in a sleeve] 3.4.slidable in an arm I 26 tiltably mounted on the frame I2 of the machine. Adjustment ofthe position of the roll I22 with respect. to the upper U of the shoe, so that it may be brought as closely as possible to the welt W without interfering with. the nozzle, is effected'by a hand lever I48 having a gear-and-rackconnection (not shown) to the sleeve I34.

, Inasmuch as the channel flap c is flexible and usually wrinkled and does not have the same relation to the sole of the shoe throughout its longitudinal extent, provision has been-made for lifting the fiapinto oo-operationwith the outer side This block I8 has overhanging portions 20. resting onthebrackets and is clamped inposition thereon. by afdouble-a-rmed lever 22 which is fulcrumed on the main block and has arms the rounded.

of the fixed nozzle portion 30 by a vibratory contact finger I60. The mounting of this contact finger IE0 is elfected through a supporting arm I64 pivotally mounted on the casting I5 which is attached to the head of the machine. Pivotally mounted in this supporting arm is a carrier lever I60 provided with a holder lever I30 on which the contact finger I60 is adjustably mounted. This finger has a head I80, the end surface of which contacts with the outer surface of the channel fiap.. Vibration of the contact finger is effected, through a connecting rod I90 pivoted to an upstanding arm of the carrier lever I68, by a poweroperatedjm'echanismnot herein shown. In order thatit may be easier to present work to the machine, the supporting arm I04 for the flap-contacting finger isnormally resiliently held away from the frame of the machine so that the head I80 of that finger is away from the fixed portion of' the nozzle, thus allowing the flap 0 of the channel to be brought into position between the two.. After the work has been positioned, the supporting arm 134 is drawn into operating position by mechanism (not shown) including alink 220.

The fixed portion 30 of the nozzle comprisescooperating plates. 302 and 304, shown in Figs. 6 and 7, the faces-of these plates being brought into contacting relation and the two plates being secured on the main block I8 by attaching screws 306 (Fig. 13).. Cement for this fixed portion=30 is delivered througliapassageway 3.08 inthe main blockIIB, the end of whichterminates in a conical recess 310 formed onthe back side of the inner plate 304 whi'chis provided with a hole 3i2 communicating with. a. groove 3I6. formed in the face 3.I8. (Fig. 7) which lies in contact with the face 320 (Fig. 6) of. the other plate 302 The lower portion 322' of the groove 3I3 is continued in a shallower portion 326. to the-very tip of the plate 304. The. co-operating plate 302, onv the other hand,.is provided alongthe lower end of its face 3201with'a recess 3'28, so shaped that when the two plates are brought together, an outlet opening comprising. an uprightslot 330 and'a bottom slot 332 will be formed. It will be noted also that the edgeface of the plate 302 is cut away at 334to preventv the cement from being scraped. off the channelflap as the shoe is moved-forward, i. e., away'from the observer in Figs. 11 and. 2 and in the direction-of the arrow in Fig. 15.

- Controlof the quantity ofthe cementdelivered to.the fixed portionof the nozzle is rendered independentof the quantity delivered to the yieldable portion 3| of the nozzle by providing a valve member. 340.having an enlarged portion 342 which is threaded in the-block I8 and a reduced portion 344 smaller than the passageway 30B and provided with av conical tip 34fi which may be brought closer toor farther away from the valve seat 3h) by turning this rod andthenlocking it in position by a nut 348. The intermediate portion of the rod 340. fits the bore 308 and prevents back flow to-the threaded portion 342-.

For convenience of. manufacture,- the support for. the yiel'dable portion 3|. of the nozzle is an auxiliary block 35i1whichisheldin positionon the main block I8 by screws 3.52 (Figs. 1 and 1 3). ThisJyielda-ble nozzle portion 3| is ofthe character illustrated in Letters Patent of the United States. No. 2,177,666,. granted. (Bot. 31, 1939, uponthe application of W. L. MacKenzie and E. S. Nokes for- Coating. apparatus. Itcdmprises a series of delivery. members35 t (Fig. 3) which. are tiltably. mounted: onv a pivot rod 35B withina fork'358 (Fig. 14) of this auxiliary block 350. Downward movement of these delivery members 354 is-limited by engagement of the upper ends 359 (Fig.3) thereof with a surface 360 formed at the innerfend of a groove 362 in this block 358. The outlet ends of the delivery members are yieldably held in substantially flat contact with the work by. a series of spring wires 364 having curved lower ends which rest in grooves 368 (Fig. 13) formed in the upper edge faces of the delivery members. The spring wires 364 are mounted in a removable supporting plate 368 held on the block 350 by screws 310. This mounting of the delivery members allowsthe outlet ends to move up and down as the heightwise contour of the channel bed changes, the movement being substantially parallel to the outlet slot 330.

Each individual delivery member is provided with a foot 312, the work-contacting face of which has parallel grooves 314 (Fig. 10), the sides of which are here shown as meeting at an angle of 60". Under some conditions, a different angular relation of these ribs may be found preferable. Each foot 312 has a passage 315 forming a continuation. of a tube-locating groove 318.. In these passages 316 are received the lower ends of yieldable metallic tubes 380 having passages 381, the upper ends of the tubes being supported by a plate 382 attached to the auxiliary block 350 by screws 384. The tubes are held in the plate 382 by solder in a transverse groove 385. By reason of the inclined relation of the work-contacting face 386 of each foot 312 to the axis of its passage 316, the outlet opening 388 has a heart shape and at the leaving end of the foot, a small projection 390 is found which tends to prevent, to a large extent, an excessive amount of cement from being extruded toward this leaving end of the foot, even though the work is not held in firm contact therewith. The tubesupporting plate 382 has a transverse bore 392 and small delivery outlet passages 394 connect the tubes 380 individually to this bore.

Attention has already been called to the fact that the channel bed b of the shank portion of the shoe is wider than the channel bed b of the forepart of the shoe. Accordingly, as shown by a comparison of Figs. 1 and 2, a less number of delivery members is usually required in cementing the forepart of the shoe than in cementing the shank portion. The ratio between these widths varies in different types of shoes and, in order that a manufacturer may not be forced to utilize a difierent, nozzle for each different type of shoe, provision has been made for controlling the number of delivery members in use. To this end, a plug 400 is inserted in the bore 392 and is retained in position therein by a finger nut 432 abutting the far side of the plate 382 and threaded into the plug 400 to hold it in position. At the near end of the plug, as viewed in Fig. 3, there is a head 404 (Figs. 4 and 5) notched at 436 to receive a dowel pin 401 which keeps the plug from turning in the bore. Division of the tubes into two groups, one of which is suificient for the forepart and both of which are needed for the shank portion, is effected by a partition 408 on the plug, lying between notches M0 and M2. These notches constitute passageways to connect a certain number of the delivery outlet passages 394 in the plate to supply'passages, to be described, and permit the user of the machine to render it suitable for another style of shoe merely by removing the plug 400 zle through the flexible pipe 92 is received in an upper passage 420 in the valve 95 and travels thence through a passage 422 (Figs. 11, 12 and 14) in the spigot 91 to a horizontal connection 424 and from there by outlet passages 426 and 428 to one or both of vertical supply passages 430 and 432, depending on the position of the valve spigot 91. The vertical passage 430 communicates directly with a corresponding passage in the nozzle block 18 and enters the lateral passage 308 surrounding the reduced portion 344 of the valve member 340. It moves thence by passages already described to the fixed portion 30 of the nozzle and also by a passage 434 (Figs. 3, 13 and 14) extending laterally from the passage 308 to one portion of the delivery members by a horizontal bore 436 in the auxiliary nozzle block 350 anda groove 438 in the upper surface of the tube plate 382 which terminates in a short, vertical passage 443 (Fig. 4) communicating with the passageway formed by the notch 410. The other delivery members, on the other hand, are supplied through the vertical valve'passage 432 communicating with a passage 442 in'the valve block 18. This passage 442 connects with a horizontal transverse passage 444 in the auxiliary block 350 terminating in a down passage 446 formed partly in the block 350 and partly in the plate 382 and terminating at a point opposite an inclined surface 459 on the plug 400. The inclination of this surface is such that the adjacent periphery of the plug constitutes a stop to shut off certain of the delivery outlets 394 while, at the same time, the cement overflows into the passageway formed by the notch 4 l2 and is thereby delivered to that extra number of delivery members needed for the shank portion of the shoe. It will be observed that the tube plate 382 is made up to contain the maximum number of tubes and delivery members which may be required. When a smaller number of tubes than this maximum is employed, plugs 452 (Fig. 4) may be inserted to close the outlets 394 which would normally feed these tubes. The plug 400 is so designed that the partition 438 will always be positioned between two of the outlets 394 and by supplying plugs of suitable design, any desired groups of delivery members may be employed. Y

A treadle (not shown) may be employed for turning the rod I08 connected to the spigot 91 of the valve 95. ,When no shoe is being presented, this spigot will be turned to an off position, not illustrated, where both passages 426 and 428 of the spigot are out of communication with the delivery passages 430 and 432. It may also be turned to two operating positions, in one of which, as illustrated in Figs. 12 and 14, cement will be supplied to both delivery passages. In the latter position, a stop finger 460 on the valve spigot is in contact with a pin 462 onthe casing of the valve 95. In another intermediate position, the stop finger 460 then being as shown in dash lines, cement is supplied to only the vertical passage 430. Determination of this intermediate position may be by any suitable arrangement, such shown), tensioned successively by a treadle. (not shown) or a combinationof'treadles.(not shown),

one of which comesto a stop when it hasbroughtx the spigot to the intermediate position and the other of which may be moved to carry the spigot finger 460 against the stop 462.

For the sake of bringing the delivery members 354 of the yieldable nozzle portion 3| as close as possible to the-fixed. nozzle; portion 30,. the plate 304, on its face opposite that shown.

in Fig. 7, is provided with a notch 321, shown in Figs. 1, 2 and 9. This plate is also relieved at 329' so that it will not bind in the base of the channel.

In the use of the machine, a shoe held by the operator in inverted, substantially horizontal position will be presented to the machine, the channel flap 0 being brought into engagement with the inclined side 33! of the fixed nozzle portion 30, which thereby serves as a gage, and the'channel bed b brought into engagement with the yieldable nozzle portion 3!, whereupon the rod 220 will be manipulated to bring the head I of the contact finger against the outside of l the channel flap c and the feed roll I22 caused to engage the-upper of the shoe. At the same time, the valve spigot 91 will be turned to a position such as that shown in Figs. 12 and 14 in order to render active both groups of delivery fingers of the yieldable nozzle portion 3| by supplying cement thereto. Progressive movement of the shoe in the hands of the operator to carry successive portions of the channel past the combined nozzle will be effected with the aid of the feed roll I22 while, at the same time, the work position is gaged by bringing the root a of the channel against the tip of the fixed nozzle portion 30. As the coating action progresses from the heel end toward thetoe of the shoe, the operator will change the position of the valve spigot 91 as the ball line is encountered to reduce the number of delivery members in use and hence the width of the band applied and will proceed to cement the channel around the forepart of the sole. When the ball line is again encountered on the other side of the shoe, the spigot 91 must be turned back to the position shown in Fig. 14 so that the channel bed b of the shank portion on the other side may be cemented. The operator is thus enabled to effectively apply a uniform and continuous coating to the shoe channel, both to the inner side of the channel flap and to the adjacent channel base. The utilization of a rigid metallic nozzle for coating the inner face of the channel flap, and which may be seated in the root of the channel, makes it easy for the operator to bring the shoe into the desired relation to the other elements of the machine and provides an abutment against which the flap may be intermittently pressed by the head I80 of the contact finger. At the. same time, a uniform and continuous coating will. be applied to the base of the channel, regardless of its particular contour at any point, and this is done by a metallic nozzle which. is unaffected by the coating materials employed, is. readily cleaned and the width of which is controlled by the valve 95 as the width of the channel base varies around the shoe. The effective extruding of viscous coating materials depends quite extensively on the maintenance of the outlet portion of the nozzle in firm and substantially fiat contact with the surface of the work. This degree of :firm contact with the workis readily. obtained by the series of pivotally mounted, narrow delivery members, eachoneof as a combination of alight and;heavy spring (not.

which is. spring. pressed. heightwise toward the work with itsoutlet cndsubstantially always flat against the-base of the channel.

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, coatingshoe bottoms, a nozzle comprising a fixed section for coating one portion of a piece of work andja yieldable section made up ofra series of yieldable members having delivery openings. for. coating an adjacent work portion, the surface characteristicsof which vary as-the coatingis'applied along the work.

2. In a machine for coating shoe bottoms, a nozzle comprising a supporting: body, a nozzle section fixed againstmovement on the body for applying, a,band of coating material and a nozzle section made up of a plurality of delivery members arranged side by side. for. individually applying bands on the work adjacentto the. band coated by the fixed section, the outlet ends of said members being mounted for bodily displacement.

3. In a machinefor coating channels having-a flap and a base, a nozzle comprising a fixed section having elongated outlet openings through adjacent surfaces thereof to coat the channel flap and an adjacent portion of the channel base, said nozzle also having a series of hollow yieldable delivery. members through the passage of which a coating is applied to substantially the remainder of the width of the base of the channel.

4. In a channel-cementing machine, a nozzle comprising a fixed section having an upright outlet slot for applying cement to the attaching face of thechannel flap and a yieldable section comprising a series of hollow delivery members the work-engaging ends of which are movable heightwise in a direction substantially parallel to said outlet slot and are arranged thus to accommodate changes in the contour of the bed of the channel.

5. In a channel-cementing machine, a nozzle comprising a delivery member the work-engaging foot of which is provided with parallel grooves, said member having an outlet passage intersecting said grooves at an acute angle'to their length and leaving an intermediate projection between the grooves at the leaving end'of the foot.

6. In a cementing machine, adelivery member having a work-engaging foot adapted to rest on the work, the work-engaging surface of said foot being provided with grooves extending in the direction of relative traversing movement between the work and the nozzle, said grooves being nozzle comprising a plurality of delivery members adapted to be divided into groups, and means for supplying coating material to said groups of delivery members comprising a fixed member provided with passages and a removable member associated therewith for determining interchangeable passage-controlling iii) the number of delivery members in the respective groups.

9. In a machine for coating shoe bottoms, a nozzle comprising a plurality of delivery members, a fixed member having more than one supply passage, said member having a transverse bore intersecting said passages, a series of .delivery outlets communicating with said bore and leading to the delivery members, and a plug for insertion in said bore and having separated relieved portions to connect the supply passages with predetermined delivery outlets.

10. In a machine for coating shoe bottoms, a nozzle comprising a plurality of delivery members, a fixed member having more than one supply passage, said member having a transverse bore intersecting said passage, a series of delivery outlets communicating with said bore and leading to the delivery members, and a plug for insertion in said bore and having separated relieved portions to connect the supply passages with predetermined delivery outlets, one of said relieved portions being arranged also to close part of the delivery outlets.

11. In a machine for coating shoe bottoms, a nozzle comprising a supporting member having two supply passages, a plurality of delivery members movably mounted thereon in side by side relation, said supporting member having a plurality of tubes for carrying coating material to said delivery members, outlets in the delivery members communicating with said tubes, and a removable member providing passage-forming means for connecting a certain number of said outlets to one of said supply passages and some more of the outlets to the other supply passage.

12. In a machine for coating shoe bottoms, a supporting member, a plurality of delivery members associated therewith, said supporting member having two supply passages and individual outlet passages communicating with said delivery members, and removable means having a stop for shutting some of said outlet passages and having passageways connecting the other outlet passages to one or the other of the supply passages.

13. In a machine for coating shoe bottoms, a nozzle having a series of delivery members, a supporting member therefor having a series of adjacent outlet passages communicating with said delivery members, said supporting member having a plurality of supply passages and a bore intersecting said outlet passages and said supply passages, and a plug adapted to be inserted in said bore for connecting part of the outlets to one of the supply passages, said plug having a partition separating adjacent outlet passages of the series.

14. In a machine for coating shoe bottoms, a nozzle having a plurality of applying members, means for supplying coating material thereto, and operator-controlled valve means associated with said supplying means for determining the number of the applying members to which coating material is supplied.

15. In a machine for coatin shoe bottoms, a nozzle having a plurality of applying members, and an operator-controlled two-position valve arranged in one position to supply one portion of said members and in a second position to supply another portion.

16. In a machine for coating shoe bottoms, a nozzle comprising a fixed section and a yieldable section for coating a band along the work, and operator-controlled means for varying the width of the band of cement applied by said yieldable section. I

- 17. In a machine for coating shoe bottoms, a nozzle comprising a fixed section and a section made up of a series of yieldable delivery members only part of which are normally active, and operator-controlled means to render active additional members during the progress of the work-traversing movement.

18. In a machine for coating shoe bottoms, a nozzle havin a plurality of applying members, and an operator-controlled valve arranged in one position to supply one portion of saidmembers and in another position to supply both this portion and another portion of the members.

19. In a channel-cementing machine for coating a channel flap and a channel base, a nozzle having a flap-coating section and a base-coating section, the latter being made up of a plurality of delivery members, and an operator-controlled valve arranged in one position to supply the flapcoating section and a part of the delivery members and in a second position to supply these and an additional part of the delivery members.

WILBUR L. MACKENZIE.

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