US1928693A - Cementing machine - Google Patents

Description

A. s. JOHNSON ,928,693

CEMENTING MACHINE Filed Jan. 28, 1931 3 Sheets-Shet l //v VEN TUE/ BOMM( MNM-SQ@ Uct.

A. s. JOHNSON CEMENTING MACHINE Filed Jan. 28, 1931 5 SheetseSheet 2 Wwf/WW MMS.

@CL 3, 1933. A. s JOHNSON 1,928,693

CEMENTING MACHINE Filed Jan. 28, 1951 5 Sheets-Sheet 5 CEMENTING MAC Arthur S. Johnson, Beverly, Mass., assigner to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application January 28, 1931. Serial No. 511,808

14 Claims.

This invention relates to cementing machines and is herein illustrated as embodied in a machine for applying marginal stripes of cement t shoe soles.

It is customary to apply marginal stripes of cement to the attaching faces of shoe soles which are to be secured to shoes entirely or largely by cement. For such shoes, commonly known as compo shoes, it is customary to use pyroxylin cement which is fairly heavy and dries very quickly and, if applied accidentally to a portion of the work where it is not desired, it cannotl readily be removed from the work without injury to the leather. When the soles are to be used for womens shoes, it is not unusual to nd that they are skived along the margin of the iiesh surface so as to provide a thinner edge, and the cementing operation must be carried on along this skived portion which is not always of uniform thickness and does not always bear the same angular relation to the opposed surface of the sole throughout its length. Also, for reasons mentioned above, it is important to protect the work from the accidental application of cement to portions of the work where it is not desired.

Accordingly, an important object of the invention is to provide an improved cementing machine organization which will obviate the danger c of accidentally soiling the Work and will hold the` work firmly in contact with the cement applying member irrespective of changes of thickness in the Work or in the angular relation between opposite surfaces of the work.

To this end, one of the features of the invention resides in a cementing machine having an applying member and a rotary edge gage which is positioned at one side of the applying member to limit the application of cement to a predetermined marginal portion of the work, means being provided to drive this edge gage whereby the surface thereof which is presented to the work tofhold the latter in just the desired relation to the applying member is constantly changing. In the illustrated machine, this gage is` the edge gage is journaied in a casing which is slidably mounted upon a shaft carrying the work supporting roll of the machine and a driving connection is provided between said shaft and the roll which is not disturbed by adjustment of the casing with respect to the shaft. The construction and arrangement of the gage roll is also such that its bearing is protected against the accidental admission of cement thereto.

The work is properly supported and danger of soiling it minimized, in accordance with another feature of the invention, by an improved work supporting organization including a driven work supporting roll and means for cleaning the surface of said roll as it approaches the work. 'Ihis is accomplished in the illustrated machine by means of a scraper associated with the upgoing side of said roll and arranged to deliver material removed by the scraper to a receptacle provided for this purpose. In the illustrated arrangement the scraper is yieldingly mounted at its upper end and has an inturned lower end for cooperation with the periphery of the roll at its upgoing side and designed so that the material removed by the scraper will drop away from the scraper and the roll into a receptacle provided for the purpose. This receptacle is illustrated as also arranged to catch drippings kfrom the scraper for the gage roll. Still another scraper may be provided for an end face of the work supporting roll.

In order to accommodate soles having skived margins of variable thickness, the illustrated machine, in accordance with a feature of the in-A vention, is provided with a novel form of work supporting roll mounted for tilting movement to accommodate variations in the work and to make sure that the work is held in firm contact with the lower surface of the applying roll.

These and other features of the invention will now be described in the following specification taken in connection with the accompanying drawings, in which Fig. 1 is a side elevation of the head of my improved cementing machine;

Fig. 2 is a vertical section through the bite `of the cooperating cement-applying and worksupporting rolls, showing a portion of a piece of work supported therebetween;

Fig. 3k is a partial end elevation looking from the left in Fig. 1; t

Fig. 4 is a detail view in side elevation with 105 parts broken away and'in section, showing a tiltably mounted work supporting roll;

Fig. 5 is an enlarged sectional view of the work supporting roll illustrated in Fig. 4; f

Figs. 6 and 7 are detail views showing the 11% scrapers for controlling the quantity of cement taken outof the receptacle by the applying roll;

Fig. 8 is an angular view of the gage roll and the tiltable work supporting roll; and

Figs. 9 and 10 show shoe soles which have been provided with marginal stripes of cement in different relations to the edges thereof.

'I'he machine is of the type illustrated in Letters Patent of the United States No. 1,242,925, granted October 16, 1917, on the application of J. W. Cosgrove, to which patent reference may be had for a description of parts of the machine, not herein fully shown and described. 4The ma chine comprises a frame 10 in which there is journaled a shaft 12 carrying a cement applying roll 14 to which cement is supplied from an overhead receptacle 16. In the frame there is pivoted on pins 70 a bracket 18 carrying a shaft 20 on which is mounted a work supporting roll 22. Provision is made for driving the shafts 12 and 20 from a driven pulley 24.

Adjustably secured on the bracket 18 is a casing 30 which includes a bearing 32 for the shaft 20 and which is held in adjusted position with respect to the bracket 18 by means of a thumb screw 34 passing through a slot in said'bracket. The casing 30 embodies a bearing 36 (Fig. 2) `for an upright shaft 38 to which is pinned a rotary edge gage 40 having a depending cylindrical flange 42 to protect the bearing 36 from cement. This edge gage is driven from the shaft 20 by means of miter gears 44 the lower of which is provided with a sleeve 46 having a keyway to receive a key 48 in the shaft 20. Provision is thus made for insuring the maintenance of the driving connection between the shaft 20 and the edge gage 40 regardless of the adjusted position of the gage. This edge gage is rotated in the direction indicated by the arrow in Fig. 1 to aid rather than to retard the progress of a shoe sole 50 positioned between the cement applying roll 14 and the work supporting roll 22 with its edge in engagement with the periphery of the gage 40. In order that cement which accidentally gets on to the gage 40 may not be transferred to the edge of the sole 50, a scraper 52 (Fig. 8) is mounted on the casing 30 for engagement with theperiphery of the roll and has arms 54, 56 coacting with the upper and lower marginal surfaces of the gage roll 40 to keep these clean also. There is thus provided an arrangement by means of which the progress of the work is facilitated and insurance provided against accidental daubing ai'` the edge of the sole with cement. f

In the bearing portion 32 of the casing 30 there is threaded a stop screw 58 which cooperates with a portion of the frame 10 to limit upward movement of the bracket 18 and hence of the work supporting roll 22 so as to prevent contact of said roll with the cement coated roll 14. 'I'he bracket 18 is maintained yieldingly in the desired relation by means of a spring 60 (Fig. 1) surrounding a rod 62 which is pivoted in a depending arm 64 oi the bracket. A sleeve 66 surroundingthe rod 62 is threaded in the frame to vary the tension of the spring 60, and an additional stop screw 68 is also provided which engages the depending arm 64 to limit its movement in a clockwise direction. In order that the work supporting roll 22 may be depressed to facilitate the insertion of a piece of work, there is provided a treadle connection, illustrated in Fig. 1, for turning the bracket 18 about its pivot pins 70. To this end, a bell crank 72 mounted on the frame has an upper arm forked to engage a collar 74 on the rod 72, and to its horizontal arm there is connected a treadle rod 76 the upward movement of which is limited by means of a stop screw 78 threaded in a block 80 clamped to the rod by a set screw 82.

' Facilitating adequate control of the quantity of cement delivered to the applying roll 14, the roll is mounted in a casing 84 between end plates 86, 88, as in the patented construction. Also as shownL therein, there are horizontal plates 90, 92 at the top of the casing 84 which cooperate to provide an outlet openingof adjustable size, the plate 92 serving also as a scraper for determining the exact quantity of cement removed by the roll 14. The arrangement differs from that shown in the patented construction in that the adjustable plate 92, the position of which may be determined by means of a screw 94, is arranged for cooperation with only the mid portion of the periphery of the roll. Its inner end is beveled and is provided with teeth 96 entering entering grooves 98 formed in the perphery of the applying roll. These grooves as illustrated in Figs. 6 and 7, may be formed by a plurality of pyramidal projections 100 on the surface of the roll, and the teeth 96 by entering the grooves, insure adequate control of the quantity of cement and dig out any partially hardened bits of cement. With the pyroxylin cement commonly utilized in a machine of this type there is some danger that, in applying a quantity of cement suicient to give a marginal stripe 102 (Fig. 9) of the desired thickness, there will be a possibility of spreading of the stripe laterally. Accordingly, there has been provided, in cooperation with the adjustable plate 92, iixed horizontal plates 104, 106 positioned on the casing 84 by means of dowel pins and screws and constructed as shown in Fig. 7 to remove entirely the cement from the margins of the lateral faces of the roll and from the margins of the periphery of the roll up to and including the first of the grooves 98 on each side. The roll therefore pass'es downwardly for contact with the work bearing a stripe of cement which does not cover the full width of the roll, and consequently the r.danger of unduly spreading the stripe 102 is work, this spreader having a beveled end which smooths out the cement on the roll and insures the application of a stripe of uniform thickness. The end of this spreader blade 108 is notched, thus providing lateral terminal portions which overlap the margins of the ends of the cement applying roll and counteract any tendency to force the cement upon said ends. The position of this spreader may be determined by a screw 110. It is also desired to insure against the delivery of foreign matter, such as leather dust or dirt, to the receptacle by the upgoing side of the roll 14 and accordingly there is also provided a cleaner blade 112 slidably mounted in grooves in the end plates 86, 88 and arranged for engagement with the upgoing side of the roll. The end of this cleaner blade 112 may also be notched and formed to clean com'pletely the peripheral surface of theroll 14 as well as its side margins and its position may be adjusted by means of a screw 114. The blade 112 also serves to hold back the cement in the `casing if the machine is left idle for a substantial time without shutting oi the ow of cement from the tank.

It will be recognized that it is also important to keep the periphery of the work supporting roll 22 clean. Accordingly, I have provided a casing 120 which partially surrounds that roll and is held upon the casing 30 by means of screws 122 (Fig. 8). On this casing 120 there is mounted a. downwardly directed scraper 124 (Fig. 3) the lower inturned end of which is adapted for engagement with the periphery of the work supporting roll 22 so as to remove therefrom any cement with which the roll has become accidentally coated. The contacting portion of the inturned end of the scraper 124 is a piece of felt 126 clamped on said inturned end by means of a plate 128. The scraper 124 is supported on the casing 120 by. means of screws 130 passing loosely through ears formed at the upper end of said scraper. Springs 132 surrounding the screws 130 bear against the outer face of the scraper 124 urging it toward the roll 22. The limit of inward movement is regulated by means of a stop screw 134. Any cement removed by the scraper 124 will fall away :from the roll and the scraper and may be collected in a removable receptacle 186 slidably secured to the bottom of the casing 120 by inturned edges 138 (Fig. 4) fitting in grooves 140 (Fig. 8) in that casing. This receptacle 136 is constructed and arranged also to catch drippings from the scraper 52 which cleans the edge gage roll 40 and to this end the receptacle has from an opening 144, a spout-like projection 142 (Fig. 4) just beneath the scraper 52 to conduct drippings to that receptacle.

It is desired to hold the marginal portions of the soles 50 in rm. engagement with the applying roll 14 and, as already explained, said soles may be skived at varying angles. Accordingly, I prefer to make the work supporting roll 22 slightly truste-conical in shape and yielding to accommodate slight variations in the work'. The work supporting roll may be constructed as illustrated in Fig. 2 to have a central core 150 on the roughened surface of which is molded a rubber ring 152 having a frusto-conical yielding periphery. Side clamping plates 154 held by a nut 156 support this rubber ring and retain the roll on the shaft 20. Preferably and as shown, the larger periphery of this frusto-conical roll will be slightly compressed by engagement with a sole 50. The casing 120 is illustrated as having a euplike projection 158 (Fig. 4) to accommodate the nut 156 when the supporting roll 22 takes the form shown in Fig. 2.

Still another form of work supporting roll, illustrated more in detail in Figs. 4, 5 and 8, may be employed, and in this instance the roll embodies a rigid metal casing 160, the inner side 162 of which has an aperture 164 with rounded edges and slightly larger than the shaft 20 on which the roll is mounted. This roll is made to serve 4the same purpose as the yielding rubber roll by providing forslight tilting movement thereof with respect to the shaft 20. Accordingly the roll is carried on the shaft by a circular disk 166 iitting a reduced portion 168 of the shaft and held by a clamping plate 170 against the shoulder formed by that reduced portion. The plate k170 is secured to the shaft by a screw 172 (Fig. 8) and has a rib 174 entering a slot in the end of the shaft and also a corresponding groove in a hub portion 176 on the disk 166, thus preventing turning -movement of the disk 166 on the shaft. The

driving connection between the roll casing 160 and the disk 166 is provided by screws 178 which secure the end plate 180 of the roll to the casing 160. These screws pass through square notches 182 in the edge of the disk and t loosely therein to provide for relative movement between the disk and the casing 160. 'Ihe end plate has a slight projecting portion 184 which just fits the inside of the casing 160 to locate it therein and is also provided with a boss 186 which, in cooperation with the hub 176, serves to positiony a spring 188. This spring presses at one end against the disk 166 and at the other end against the end vplate 180 and tends to hold the inner end 162 of the roll casing in engagement with the disk 166. Provision is made for slight movement radially of the shaft 20 by the depth and width of the notches 182 and the size of the aperture 164 and also for slight tilting movement with respect to said shaft against the resilience of the spring 188. If this form of work supporting roll is employed, then a scraper blade 190 may be attached by screws to the casing 30 in close proximity to the outer face of the rear side 162 of the roll to clean off any cement accidentally deposited thereon. This scraper blade 190 prevents inward tilting movement of the upper portion of the work supporting roll.

In the use of the machine it may be desired to bring the stripe of cement 102 into-` registration with the edge of the sole 50, as illustrated in Fig. 9, and in that case the rotary gage 40 will be positioned as shown-in Fig. 2. If, however, as may be the case, it is desired to carry out my novel method and to apply astripe 192 separated from the edge of the sole by a marginal band 194, then the edge gage will be moved into the position shown in Fig. 1, for example, and the stripe located as shown in Fig. 10. The resulting article which, in accordance -with the customary practice, will have the forepart slightly reduced marginally on the flesh side, and a marginal stripe 192 of adhesive cement so positioned upon the sole that the marginal band 194 is free from cement. As shown in Fig. 10, the stripe of ce ment is of such a width that the opposite edges coincide or even overlap at the shank of the sole so this area is coated substantially throughout. The center portion of the forepart will be left uncoated, thus eliminating unnecessary waste of cement and providing a more flexible shoe. This placing of the stripe of cement so that it is separated from the edge of. the sole by an uncoated margin 194 will prevent any cement from showing in the finished shoe, as by a squeezing outl of said cement when the sole is attached. The machine will be operated in the customary manner, depression of the work supporting roll 22 by means of the treadle (not shown) attached to the treadle rod 76 facilitating the introduction of the work and a marginal stripe of cement will be applied to the soles starting at a point near the heel end .at one side and extending completely around tlie forward periphery of the sole to a point near the heel end on the other side, as illustrated in Figs. 9 and 10. The operation of the machine with respect to the quantity of cement applied, etc., may be determined by adjustment of the various Scrapers and stop screws provided, as to the operation of which further description is believed to be unnecessary.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent lof the United States iszroll rotatable about a horizontal axis and having the lower portion of its periphery exposed for the presentation of the margins of soles thereto, a cy'- lindrical edge gage rotatably mounted about an upright axis and positioned at one side of the applying roll thereby to guide a sole by contact between its periphery and the edge of a sole, means for rotating said edge gage in a direction to assist the progress of soles presented thereto, and a scraper for the periphery of said edge gage positioned to coact with the edge gage as it leaves the applying roll.

2. In a cementing machine, a cement applying member, a rotatable edge gage, a frame rotatably supporting said edge' gage adjustably mounted on said machine, and means for driving said edge gage part of which is adjustable with said frame and constructed and arranged for driving engagement with said gage in any position of adjustment of the gage.

.3. In a cementing machine, a shaft, a feed roll I mounted on said shaft, a casing slidable on said shaft, means for adjustably positioning said casing, a driven rotatable edge gage roll journaled in said casing, driving means for the gage rolll within the casing slidably connected to said shaft thereby to permit adjustment of the casing and its edge gage roll without disturbing the driving connection, and a scraper for the work engaging portion of the gage roll, said scraper being movable with the casing.

4. In a cementing machine, a cement applying member, a driven feed roll opposite to said member, a driven rotatable edge gage, a bracket pivoted in said machine constructed and. arranged to support said feed roll and said edge gage and adjustable with respect to the applying roll, a driving shaft for said feed roll and said edge gage journaled in said bracket, and means adjustably connected to the bracket for varying the relation of the edge gage to the feed roll longitudinally of the driving shaft and fixing said edge gage in its 1 adjusted position.

` ceptacle to receive material scraped vfrom thev 5. In a cementing machine, a work supporting roll driven in' an upright plane, and a scraper blade yieldingly supported at its upper end, the lower end of said scraper blade cooperating with 'the peripheral surface of the work supporting roll at its upgoing side whereby-material removed by. the scraper will drop away from the scraper and roll.

6. In a cementing machine, acement applying roll driven in an upright plane, a work supporting roll positioned beneath the cement applying roll, a downwardly directed scraper the lower end of which is associated with the upgoing side of the Work supporting roll, and a removable rework supporting roll.

7. In a cementing machine, an applying meinber, a supply receptacle therefor, a cooperating work supporting roll beneath said applying member, a driven rotary edge gage positioned at one side of the applying member, a scraper for the periphery of the edge gage, a scraper for the periphery of the work supporting roll, and a receptacle separate from the supply receptacle constructed and arranged to receive cement removed by said Scrapers.

8. In a cementing machine, a driven work supporting roll, a scraper blade having an inturned lower end associated with an upgoing side of the work supporting roll, said blade being apertured a't its upper end, anda retaining member passing loosely through said aperture and provided with a spring bearing against the outer side of the scraper blade.

9. In a cementing machine, a frame, a driven work supporting roll, a bracket pivotally mounted in said frame to provide a support for said roll, a casing surrounding the lower side of said roll, a scraper attached to said lcasing associated with the upgoing side of the roll, the lower margins of said casing being provided with lateral grooves, and a receptacle slidably positioned on said casing by means of lips entering said grooves.

10. In a cementing machine, a cement applying member exposed on its under side for the progressive application of cement to pieces of work presented thereto, a driven rotary edge gage positioned at one side of said cement applying member, and a driven work supporting roll for holding the work in engagement with the cement applying member and causing it to move along in contact therewith, said roll comprising a rigid -core and a resilient annulus secured to said core 11. In acementing machine, a shaft, a worksupporting roll tiitably mounted on said Shaft for rotation therewith, and a scraper positioned in proximity to one end face of said tiltably mounted roll to prevent the accumulation of ceno ment thereon and cooperating with the roll to limit the tilting movement.

12. In a cementing machine, a shaft, a hollow work supporting roll loosely mounted on said shaft, means for iiexibly supporting and driving said roll comprising a notched disk secured to said shaft within said roll, a spring interposed between said disk and an inner face of the roll, and transverse driving memberssecured to said roll and passing throughthe notches of said disk.

13. In a cementing machine, a shaft the outer end of which is provided with a reduced portion having a transverse slot at its extreme end, a disk having notches in its periphery mounted on said shaft upon the reduced portion thereof and held on the shaft by means cooperating with the slotted end of the shaft, and a roll casing surrounding said disk in driving engagement with its notched periphery, said casing being normally re- 13e siliently held in contact with one face of said disk.-

14. In a cementing machine, a presser roll comprising a hollow casing perforated to receive loosely a supporting shaft, a disk secured in driving relation to said shaft, and a driving connection between said disk and said casing constructed and arrangedresiliently to hold the casing normally in contact with one face of the disk while permitting substantially universal tilting movement of the casing with respect to the disk.

ARTHUR S. JOHNSON.

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