US2032364A - Upper cementing machine - Google Patents

Description

' March 3, 1936. A. s. JOHNSON 2,032,364

UPPER CEMENTING MACHINE Filed Sept. 27, 1932 3 Sheets-Sheet 1 March 3, 1936. A. s. JOHNSON 2,032,364

UPPER CEMENTI NG MACHINE File d Sept. 27, v1932 3 Sheets-Sheet 2 March 3, 1936 A. s, JOHNSON UPPER CEMENTING MACHINE Filed Sept. 27, 1952 '3 Sheets-SheetG l/E/V 717/? lg-2M5. 9%

we amm 5r Patented Mar. 3, 1936 UNITED STATES PATENT OFFICE UPPER CEMENTING MACHINE Application September 27, 1932, Serial No. 635,104

23 Claims.

This invention relates to cementing machines for boots and shoes and is herein illustrated as embodied in a machine for applying cement to beveled edges of shoe upper parts particularly designed for use in shoes, herein for convenience termed moccasin-type shoes, although it may be used for the parts of true moccasins.

Shoes of the so-called moccasin-type, by reason of being provided with separate Vamps and soles, are. to be distinguished, from true moccasins having a one-piece vamp which extends down the sides and under the foot. In moccasin-type shoes, the shoe upper comprises a vamp extending around the toe and sides of the forepart of the shoe and a central top piece or tongue. The tongue and the vamp are joined along rather abruptly beveled edges which are ultimately sewed together. In order to facilitate the sewing operation and so that these edges may not gap in the finished shoe, the beveled edges of the tongue and vamp are usually, at least, cemented together. The application of cement to the beveled edge of a Shoe upper part of this type is difficult because of the narrow area to be coated, as well as by reason of the abruptness of the bevel, and is rendered even more diflicult by the fact that the angles of the bevels are not the same in different lots of shoes, and also by the fact that oftentimes the tongue and the vamp are not of the same thickness. Furthermore, presentation of the beveled edge of a piece of flexible upper leather to machines of known types which are intended to coat the margin of the flat surface of such a piece is difficult, if not impossible, to perform efficiently manually and without soiling the adjacent surfaces.

Accordingly, an object of the invention is to provide a machine for coating the beveled edges of shoe upper parts by means of which a controllable and uniform coat of cement may be applied to these parts rapidly and with a minimum of skill upon the part of the operator.

The cement will be applied to a beveled edge which slopes in toward the flesh side of the work and, while it is important that no cement shall be applied to the grain side of the work, it is not of as great importance to protect the flesh side adjacent to the beveled edge. As explained above, the presentation of the narrow beveled edges of such pieces of work to an applying member one after another when supported and guided only by hand would be diificult and it would be practically impossible to hold them steadily enough against the applying member to apply a uniform coating. In common with most machines for coating shoe upper parts, the application of cement is effected in the illustrated machine by means of a rotatable applying member, illustrated as rotatable about a horizontal axis, but, with the foregoing in view and in accordance with a feature of the invention, 5 means are provided for gripping the side faces of the upper and feeding the upper to carry its beveled edge past a rotatable applying means in coating relation thereto, with the upper in a plane inclined to the axis of the rotatable applying mem- 10 her. In the illustrated machine, the work gripping and feeding means comprises oppositely inclined frusto-conical members one of which is a Work-supporting roll and the other of which is a presser roll illustrated as rotatable about the axis 5 of the applying member.

In the coating of shoe upper parts, two types of cement are in common use. One of these, for example, is rubber which has been dissolved in naphtha. The other type of cement, known to 20 the trade as latex, is water-dispersed rubber comprising the sap of the rubber tree. These two types of cement usually cannot be handled efficiently in the same apparatus because, while the first is quite viscous and adheres readily to the 5 shoe part to be coated, upon contact between the two, the second is thin and watery and usually has to be pressed or rubbed into the leather in order to get a complete and uniform coating.

For the application of naphtha-cut rubber ce- 30 ment an applying roll having a circumferentially grooved periphery in which the cement is carried may be utilized thereby to avoid the necessity of exact contact between a beveled edge of the work and a rigid coating surface.

In accordance with another feature of the invention, work-presenting means are provided which hold the work in a plane inclined to the axis of the applying roll to carry successive portions of the beveled edge of the work into contact 40 with the cement carried in the groove of the applying roll. Preferably, and as shown, this presenting means is also arranged to feed the Work past the applying roll. In the illustrated machine, the frusto-conical presser member is a flange upon the applying roll and is tapered inwardly toward the groove therein.

In accordance with other features of the invention, improved means for controlling the quantity of cement delivered to the groove of an applying roll and improved means for cleaning the presser flange upon the applying roll are provided. In the illustrated machine also and in accordance with still other features of the inven- 1 9.11, the surface of the presser flange is made inclined surface of said applying roll.

smooth, while the surface of the work supporting roll is roughened or knurled. Thus, the applying roll and its presser flange may be rotated in a direction opposite to the direction of progress of the work to facilitate the application of a uniform coating of cement by the applying roll, while the flange performs its desired pressing function substantially without hindering the progress of the work. V

For the application of cements of the latex type, a frusto-conical applying roll is utilized and work-presenting means holding the work inclined to the axis of the applying roll is arranged to press the beveled edge of the Work against the In order that work pieces, the edges of which are beveled at different angles may be properly presented to and coated by such a roll, provision is made in accordance with a feature of the invention, for gripping superposed margins of the side faces of the work in a region spaced from the connecting beveled edge, allowing the edge portion to be deflected or distorted in one direction or the other so as to bring the beveled edge of the work into firm contact with the applying r011. As illustrated, a presser roll cooperating with a worksupporting roll to grip the work is mounted for free rotation upon the shaft of the applying roll, and the supporting roll and the applying roll are staggered or out of alinement, thereby .to leave a space for the deflected thin edge of the work. To accommodate variations in thickness of the Work, the illustrated work-supporting roll is tiltably mounted on its shaft so that its supporting surface may always assume a condition of parallelism with the coacting surface of the presser roll.

These and other features of the invention are set forth more in detail in the following specification taken in connection with the accompanying drawings, in which ,3

Fig. 1 is a front elevation of a machine for applying rubber cement of the naphtha-cut type;

Fig. 2 is a perspective view of the tongue of a moccasin upper; Fig. 3 is an angular View upon a larger scale, with parts broken away and in section, of the work-presenting and coating parts of the machine shown in Fig. 1;

Fig. 4 is a vertical section through the axes of the work-treating rolls with apiece of work shown in section in position therebetween;

Fig. 5 is a detail view of the scrapers for the applying roll and the presser flange;

Fig. 6 is a section, greatly enlarged, through the edge of a work piece coated by the applying roll shown in Fig. 4; V

Fig. 7 is a section on an enlarged scale through the seam of a moccasin type upper;

Fig. 8 is a vertical section on a larger scale through the axes of the applying roll and the Work-supporting roll of a machine for applying cement of the latex type;

Fig. 9 is a horizontal section through the axis of the pick-up roll of this machine and showing the scraper controlling the cement taken out of the receptacle thereby;

Fig; 10 is a front elevation, with parts in section, of this machine; and

Fig. 11 is an angular view of a portion of this machine showing the train of cement-carrying rolls.

The application of cement to the beveled edge l2 of a piece of work such as a tongue I4- of a moccasin type of shoe, shown in Fig. 2 with its fiesh side l5 uppermost, is to facilitate the formation of a joint such as is shown in Fig. 7, where the beveled edges of the tongue I4 and a vamp l 5 have been butted together and joined, first, by a coating of cement upon the opposed edges and, second, by a seam I8. The application of cement not only facilitates the presentation of the work to the sewing machine but also prevents any gapping of the adjacent edges along the joint 20. The work will usually be presented to an applying roll 22 with its flesh side l5 uppermost so that the beveled edge I2 is brought into contact with cement carried in a groove 24 (Fig. 4) in the periphery of the applying roll 22. It is of no consequence if some cement is applied upon the adjacent margin of the flesh side of the work so long as the whole of the beveled edge I2 is covered with cement 25, as indicated, much exaggerated, in Fig. 8. Accordingly, and in order to bring successive portions of the beveled edge easily into contact with the cement carried in the groove 24, the work is gripped between a presser member 26 tapered inwardly toward the groove of the cement roll, and formed in the illustrated construction, as a flange integral therewith, and a frusto-conical work-supporting roll 30 having a knurled surface, as indicated in Figs. 1 and 3.

The'applying roll 22 is mounted upon a shaft 32 rotated counter-clockwise as viewed from the lefthand end, so that the lower periphery of the roll moves in a direction opposite to the direction of progress of the work as effected by the'drivcn work-supporting and feed roll 30 which also is rotated in a counter-clockwise direction as viewed from the left-hand end by power supplied through a driving pulley 36 (Fig. 1). These shafts are mounted in the frame 38 of a machine of the type shown in Letters Patent of the United States No. 1,242,925, granted October 16, 1917, upon an application of John W. Cosgrove, to which reference may be had for a description of those parts not herein more fully shown or described. The lower shaft 34 is journaled in an arm 40 pivoted in the frame and urged against the work by a spring 42 to a limiting position determined by a stop screw 44. Upon this arm 40 there is carried an edge gage 45 having a supporting flange 48 (Fig. 3) and a gage flange 50, the near end of which is curved to facilitate the presentation of a piece of work. This gage 46 is grooved, as indicated at 52 I (Fig. 3) to receive a flange 54 upon the inner side of the groove 24 of the applying roll, thereby bringing the roll and the gage into such close relation that there is less opportunity for the accidental pinching of the edge of a piece of work between the applying roll and the gage. The gage is shown as mounted upon the arm 40 by means of a screw 56 passing through a slot' in the body of the gage. This, however, is only to aid assembling of the machine and only one operative position of the gage is needed or possible. It will be noted from Fig. 4 that the back edge of the frusto-conical work-supporting roll 30 is chamfered at 51 to' avoid any danger of pinching the thin edge of the work between the flange 54 of the applying roll and the work-supporting roll. The periphery of the work-supporting roll is kept clean, in case of accidental deposit of cement thereon, by means of a felt wiper 58 carried in a bracket 60 which is mounted upon the arm 40 by means of screws 62 and 64, the latter of which passes through an elongated opening, thereby allowing the felt 58 to be adjusted into close contact with the lower side of the work-supporting feed roll 30.

The control of the outflow and the quantity of cement removed from a container III by the applying roll 22 is effected by mechanism illustrated in Figs. 3, 4 and 5, the general arrangement of which is like that shown in the patented construction but which differs therefrom in that the scraper I2 for the downgoing side of the roll is provided on its under side with a rounded projection or rib I4 entering the groove 24 of the applying roll 22 to remove a portion of the cement deposited in said groove from the container 18. The flange of the applying roll constituting the work presser 26 is kept clean by means of block I6 having a beveled rib upon the under surface designed to scrape all the cement from the outgoing portiin of this tapered work presser 26, as may be seen from Figs. 4 and 5. This block is held removably in position in the machine by means of dowel pins. The scrapers 12', 15' for the upgoing side of the roll are of the same construction as those just described, though the adjustment will be different on opposite sides of the roll, as is customary in machines of this type. 'On the upgoing side of the applying roll the scraper I2 will be adjusted, as described in the above-mentioned Patent No. 1,242,925, to a position where surplus cement will be returned to the receptacle and where, at the same time, the frictional drag of the roll will offset the effect of gravity upon the cement in the receptacle and prevent dripping.

When it is desired to apply latex to the beveled edge of the work, the edge is pressed against a knurled surface 88 (Fig. 8) of a frusto-conical applying roll 82 (Figs. 8, 10 and 11) secured to a shaft 84 of a machine of the type of that shown in Letters Patent of the United States No. 1,851,162, granted March 29, 1932, on an application filed in the name of J. W. Cosgrove, deceased. Latex is delivered to the surface of this applying roll 82 from a complementary shaped transfer roll 85 which, in turn, is supplied from a pick-up roll 86 which removes the latex from a trough 88 where it is kept at a substantially constant level by a barometric feed bottle 89. Control of the quantity of latex taken out by the pick-up roll 86 is effected by means of a notched scraper plate 90 (Fig. 9) and a cooperating scraper plate 92 These plates are adjustably positioned upon a rod 94 by means of screws 96 passing through slots n the plates. The notched plate 90 coacts with the beveled periphery and the right side of the roll 86. The plate 82 coacts with the left side and with the periphery of this roll 86. The arrangement is such that all the latex will be removed from the lateral faces of the pick-up roll 86 while the quantity of latex upon the inclined periphery will be adjusted by movement of the whole scraper. organization. To this end, the rod 94 is fixed in a pivoted bracket 98 the position of which may be adjusted by turning a wing nut 99.

The presentation of a piece of work such as the tongue I4 to the applying roll 82 with its flesh side I5 uppermost is effected by the cooperation of a presser r011 I80 and a work-supporting roll I02. The presser roll I88, which is frusto-conical, tapering in the opposite direction to the applying roll 82, is pivoted upon a stud I I14 in the end of the shaft 84 so that the rolls 82 and I00 are coaxial, the roll It!) being free to rotate independently of the roll 82. The frusto-conical worksupporting roll is tiltably mounted upon a driven shaft I 86 by a universal joint I08 constructed, for example, substantially as shown in Letters Patent of the United States No. 1,393,161, granted January 3, 1933, upon an application filed in the name of John W. Cosgrove.

This shaft is mounted in a pivoted bracket H8 and the worksupporting roll is urged upwardly toward the applying roll by a spring I I2 acting upon the bracket or may be depressed to facilitate the insertion of work by means of a treadle (not shown) attached toa treadle rod II 4. A cover plate H8- is adjustably secured to the bracket I I0 and protects the mechanism of the universal joint I08 from drippings of latex. The position of the Work with respect to the applying roll may be variably controlled in accordance with the bevel of the edge of the piece of work by properly setting an edge gage I29 provided with a tapering entering groove.

It will be observed that the large end of the frusto-conical work-supporting roll I 82 is staggered or out of vertical alinement with respect to the large end of the applying roll 82 so that if the bevel of the work is sharper than would contact perfectly with the surface 8!! of the applying roll 82, there is still room for the edge of this work to be curled down between the supporting roll and the applying roll so that the whole face of the beveled edge may be brought into contact with the applying roll.

The application of coating material to the beveled edge of the work will be effected by either the applying roll 22 or the applying roll 82 as the work is fed past the applying roll by the cooperating presser and feed rolls 26, 38 or I00, I62 which grip the opposite margins of the side faces of the work, thereby to support the piece of work in a plane inclined to the axis of the applying roll with the connecting beveled edge in coating relation to the periphery of the apply ing roll. If it is desired to apply rubber cement, then the edge of the piece of work is forced into contact with the cement carried in the groove 24 of the applying roll 22 which is rotated in a direction opposite to the'direction of progress of the work, thus frictionally forcing the cement into even and uniform contact with the work. If, on the other hand, it is desired to apply a cement of the latex type, then the edge of the piece of work will be pushed against the frusto-conical face of the applying roll 82, and the work held in a plane inclined to the axis of the applying roll will be fed forward by the driven work-supporting roll I82, it being held against this roll by the cooperating presser roll I88 which rotates about the axis of the applying roll.

Having 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 cementing the beveled edges joining the side faces of flexible shoe upper parts, means for applying cement to a beveled edge comprising a rotatable member, and means for gripping the unbeveled side faces of an upper part constructed and arranged to feed the upper to carry its beveled edge past said applying means in coating relation thereto with the side faces of the upper part in a plane inclined to the axis of the rotatable applying member.

2. In a machine for cementing the beveled edges of shoe upper parts, means for applying cement to a beveled edge comprising a rotatable member, and a mechanism comprising oppositely inclined frusto-conical means for gripping and feeding the upper past said applying means in a position inclined to the axis of the rotatable applying member to present the beveled edge thereto/ 3. In a machine for cementing the beveled edges of shoe upper parts, a cement applying roll adapted to deposit cement upon a beveled edge, and means for feeding the upper comprising a frusto-conical presser member rotatable about the axis of theapplying roll and a coacting worksupporting member constructed and arranged to hold the work against said frusto-conical roll and inclined upwardly toward the applying roll.

4. In a machine for cementing the beveled edges of shoe upper parts, a cement-applying roll adapted to deposit cement upon a beveled edge, a frusto-conical presser roll rotatable about the axis of the applying roll, and a frusto-conical work-supporting roll for holding the work in an inclined plane against the surface of said presser roll.

' 5. In a machine for cementing the beveled edges of shoe upper parts, a cement-applying roll adapted to deposit cement upon a beveled edge, a frusto-conical presser roll rotatable about the axis of the applying roll, and a frusto-com'cal, positively driven, work-supporting roll for holding the work in an inclined plane against the surface of said presser roll.

6. In a machine for cementing the beveled edges of shoe upper parts, a driven cement-applying roll, a frusto-conical work-presser roll mounted on the shaft of said applying roll, and a frustoconical work-supporting roll cooperating with the presser roll thereby to present the work in a plane inclined to the axis of the applying roll.

'7. In a machine for coating the beveled edges of shoe upper parts, a cement-applying roll hav ing a circumferential groove, and means for presenting the work in a plane inclined to the axis of the applying roll with the beveled edge in contact with the cement carried in the groove.

8. In a machine for coating the beveled edges of shoe upper parts, a cement-applying roll having a circumferential groove, a work-pressing flange upon said applying roll tapered inwardly toward the groove therein, and an oppositely tapered frusto-conical work-supporting roll for holding the work in an inclined plane'and feeding it past the applying roll. 7 9. In a machine for coating the beveled edges of shoe upper parts, a cement-applying roll having a circumferential groove and'a frusto-conical flange largest at its outer end, means for controlling the quantity of cement in the groove, means for cleaning said flange, and means for supporting a piece of work in contact with the flange with its beveled edge touching the cement in the groove.

10. In a machine for coating'the beveled edges of shoe upper parts, a cement-applying roll having a circumferential groove and a frusto-conical flange largest at its'outer end, means for controlling the quantity of cement in the groove, means for cleaning said flange, and a frustoconical work-supporting roll cooperating with the flange of the applying roll and tapered in the opposite direction.

11. 'In a machine for coating the beveled edges of shoe upper parts, a cement-applying roll having a circumferential groove and driven in a direction opposite to the direction of feed of the work, and frusto-conical work-supporting means to present the work in inclined relation to the axis of said applying roll.

12. In a machine for coating the beveled edges of shoe upper parts, a grooved cement-applying roll having a frusto-conical, outwardly expand- 7 ing flange with a smooth surface, said applying roll being driven in a direction opposite to the direction of feed of the work, and a knurled, frusto-conical work-supporting roll the surface of which cooperates with the surface of said flange in supporting a piece of work with its edge inclined upwardly toward the under side of the applying roll and projecting into the groove thereof.

13. In a machine for cementing the beveled edges of shoe upper parts, a driven cement-applying roll, a frusto-conical work-presser roll freely rotatable on the shaft of said applying roll, and a frusto-conical work-supporting roll cooperating with the presser roll thereby to present the work in a plane inclined to the axis of the applying roll.

14. In a machine for cementing the beveled edges of shoe upper parts, a driven cement-applying roll, a frusto-conical workpresser roll freely rotatable on the shaft of said applying roll, and "a positively driven frusto-conical work-supporting roll cooperating with the presser roll thereby to present the work in a plane inclined to the axis of the applying roll.

15. In a machine for cementing the beveled edge joining the side faces of, a shoe upper part, an applying roll, and presenting means contacting with said side faces for gripping said upper part to hold said part in a plane inclined to the axis of said applying roll and to hold the edge of the upper part in coating relation to the periphery of the applying roll, said presenting means comprising a shaft and a member tiltably mounted on said shaft contacting with one side face of the work to assist in gripping it and holding it in said inclined plane.

16. In a machine for cementing the beveled edges of shoe upper parts, an applying roll, and means for presenting work to said applying roll in a plane inclined to the axis of said applying roll comprising cooperating frusto-conical workgripping rolls one of which is tiltably mounted thereby to compensate for various thicknesses of work. 7

1'7. In a machine for cementing the beveled edges of shoe upper parts, a frusto-conical applying roll, and means gripping opposite margins of the side faces of the work for presenting the connecting beveled edge of a piece of work to the conical surface of said applying roll in a plane inclined to the face of the applying roll thereby to bring said edges into contact with the periphery of the applying roll.

18. In a machine for cementing the beveled edges of shoe upper parts, a frusto-conical applying roll, and means for presenting the beveled edge of a piece of work to the conical surface of said applying roll in a plane inclined upwardly toward the lower face of the applying roll and comprising cooperating frusto-conical operating work-feeding means presenting the work in a plane inclined to the axis of the applying roll and gripping the work in a region spaced from its edge to allow the edge portion to be deflected, thereby to bring the beveled edge of the work into firm contact with the applying roll.

20. In a machine for cementing the beveled edges of shoe upper parts, an applying roll to which the edge of the work is presented, and cooperating presser and work-supporting rolls holding the work in a plane inclined to'the axis of the applying roll, one of said work-presenting rolls and the applying roll being staggered to leave a space for the deflection of the thin edge of the work as it is presented to the applying roll.

21. In a machine for cementing the beveled edges of shoe upper parts for moccasin-type shoes, a frusto-conical applying roll, and a frustoconical work-supporting roll tapering in the same direction as the applying roll and set out of vertical alinement with the applying roll to leave a space between the largest periphery of the Work-supporting roll and the face of the applying roll for the deflected thin edge of the work.

22. In a machine for cementing the beveled edges of shoe upper parts for mocassin-type shoes, a driven shaft, a frusto-conical applying 15 roll secured thereto, a frusto-conical, oppositely inclined, work-presser roll freely rotatable on the shaft of the applying roll, and a frusto-conical, cooperating, work-supporting roll inclined oppositely to the presser roll.

23. In a machine for cementing the beveled edges of shoe upper parts for moccasin-type shoes, a driven shaft, a frusto-conical applying roll secured thereto, a afrusto-conical, oppositely inclined, work-presser roll freely rotatable on the shaft of the applying roll, and a frusto-conical, cooperating, work-supporting roll inclined 0ppositely to the presser roll, said work-supporting roll being tiltably mounted and positively driven.

ARTHUR S. JOHNSON.

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