US2491185A

US2491185A - Apparatus for applying adhesive to two adjacent surfaces simultaneously

Info

Publication number: US2491185A
Application number: US706238A
Authority: US
Inventors: Jacob S Kamborian
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-10-28
Filing date: 1946-10-28
Publication date: 1949-12-13
Anticipated expiration: 1966-12-13

Description

1949 J. 5. KAMBORIAN 2,491,185

APPARATUS FOR APPLYING ADHESIVE TO TWO ADJACENT SURFACES SIMUUI'ANEOUSLY v 2 Sheets-Sheet 1 Filed 001:. 2a, 1946 five/2Z0 m 13, 1949 s. KAMBOR AN 2.491185- APPARATUS FOR APPLYING A HESIVE TO TWO ADJACENT SURFACES SIIULTANEOUSLY FiladOct. as, 1946 ZSheets-Shaet z P/M PSI Mm Patented Dec. 13, 1949 APPARATUS FOR APPLYING ADHESIVE TO TWO ADJACENT SURFACES SIMULTANE- OUSLY Jacob s. Kamborian, West Newton, Mass;

Application October 28, 1946, Serial No. 706,238

2 Claims. (Cl. 91-12) This invention relates to apparatus for applying fluid adhesive, and more particularly to apparatus designed to apply adhesive simultaneously to two adjacent surfaces, usually disposed in intersecting planes, in such a way as to leave the surfaces immediately bordering the junction between them free from adhesive, the present application being a continuation-in-partof the application for Letters Patent Serial No. 540,868, filed Junel7, 1944, by Jacob S. Kamborian, now Patent No. 2,467,384, issued April 19, 1949. While the present invention is of broad utility, and the apparatus herein disclosed is useful for applying adhesive simultaneously to adjacent surfaces of various articles, for instance to parts of cardboard boxes or the like, it is specifically illustrated herein, by way of example, as employed in the manufacture of shoes, in particular for applying adhesive simultaneously to the inner surface of a marginal portion or appendage of the shoe upper and to the margin of a sole member assembled with the upper upon a last. For more particular illustration, the shoe is herein shown as of the force-lasted or California type.

Herein, in referring to the manufacture of shoes and to the application of adhesive to the shoe parts, the term shoe upper is employed broadly and intended to cover the upper, proper, of a shoe of ordinary type, whether such upper comprise one or more plies of material, and also to include such an appendage to the upper, whether integral or not, as the wrapper of a California type or force-lasted shoe. Likewise when reference is made to a sole or sole member, this term is intended in a broad sense and to include such elements as the insole, proper, of a shoe of ordinary type whether welt, McKay, or cement lasted; the middle sole of either an ordinary type or a California type of shoe, and the cushion sole or sock lining of the latter type of shoe. While these particular instances of the meaning of upper and sole member have been given by way of illustration, it is not intended thereby to limit the interpretation of the terms upper and sole member to these particular embodiments.

Whenever it is attempted to apply adhesive,to the inner surface of the margin of an upper and to the margin of a sole member assembled with the upper upon a last, the adhesive, whether applied as a spray or by means of a brush, tends to enter the extreme angle between the upper and sition which they at that time occupy. When, thereafter, it is attempted to last the shoe, if of ordinary type, or to stress the wrapper of a force-- lasted shoe preparatory to laying it down on the sole member, the adhesive union of the parts strongly resists stress applied to the upper or wrapper so that it is substantially impossible to draw the upper snugly down to the wood of the last or to provide the neat fit and sharp corner desirable where the wrapper of the force-lasted shoe bends about the edge of the middle sole, even though force suflicient to tear the upper material be applied.

Moreover, the customary modes of applying the adhesive are slow andvery wasteful of the adhesive, also adding very considerably to the cost of making shoes.

One object of the present invention is to provide means for applying cement simultaneously to two adjacent surfaces, for example, two surfaces located in intersecting planes as for insole member and to flow down around the periphv stance the upper of an ordinary cement lasted shoe (assembled on a last with an insole) and the exposed surface of the insole, or as a further exforce lasted shoe and the margin of the cushion or middle sole of such a shoe, and to provide means operative so to apply the adhesive in a more expeditious, less wasteful and less expensive way than heretofore. A further object is to provide means for so applying adhesive to adjacent surfaces as to avoid prematurely attaching adjacent parts to each other. A further object is to provide cement-applying means operative to apply cement in distinct, spaced ribbons to the two surfaces and adjacent to the line of intersection of the respective planes of said surfaces, .but spaced from said line of intersection. A further object is to provide adhesive-applying apparatus 50 designed that the thickness and width of the ribbons of applied adhesive may be varied at will.

Other and further objects and advantages of the invention will be pointed out in the following more detailed description and by reference to the accompanying drawings wherein I Fig. 1 is a fragmentary perspective view showing the present invention embodied in a machine designed to apply adhesive simultaneously to the insole and wrapper of a California-type shoe;

Fig. 2 is a fragmentary side elevation, partly in vertical section, showing the work-advancing element and the adhesive applying nozzle of the present invention as they are relatively arranged ample, the inner surface of the wrapper of a preparatory to introducing the work between them;

Fig. 3 is a side elevation of one desirable form of cement-applyinl nml Fig. 4 is a rear view, partly in section, of the nozzle device of Fig. 3

Fig. 5 is a plan view of the nozzle of Fig. 3;

Fig. 6 is a bottom plan view of the nozzle of 3; lg. 7 is a section to large scale on the line 1--| of Fig. 4; I

Fig. 8 is a fragmentary rear elevation of an alternative form of cement-applying nozzle;

Figs. 9 and 10 are perspective views to larger scale than Fig. 8, illustrating interchangeable parts of the nozzle of Fig. 8; and

Fig. 11 is a fragmentary side elevation of a nozzle generally similar to that of Fig. 8. but provided with a regulating valve; and

Fig. 12 is a section, to larger scale, on the line [2-42 of Fig. 11.

Referring to the drawings the numeral l designates a hollow base or column having a top member 2 which may or may not be integral with the vertical side walls of the base, the base constituting a protective case for certain operative parts not here illustrated. On the top member 2 (Fig. 1) there is mounted the rigid frame IS, the latter being supported by the top member 2 of the base and being integral with said top member if so desired. This frame I! projects forwardly beyond the vertical front face I5 of the base I so as to space the operating mechanism forwardly away from the base and thus avoid interference between the work and the base. The forward part of the frame is provided with bearings for a motor driven vertical shaft 23 which carries a peripherally ribbed or knurled work-advancing or feed roll 25 at its lower end.

The frame I; is provided with horizontal guideways for a slide member provided with a downwardly directed bracket arm 28 (Fig. 1)

the tubular stem is but which at other times is so located as to be closed leak-tight by the inner surface of the wall of the tubular stem 29. The upper end of this rotary valve 42 is provided with a collar 45 having a lateral arm 46 to which is secured one end of a link 41 (Fig. 2) the 01390- site end of which is pivotally connected to an adjustable anchorage member 48 attached to the frame member ii. The parts are so arranged that when the applicator nozzle is operatively related to the work and to the roll 26 by rearward movement of the slide and bracket arm 28, the arm 46 is so positioned by the link 41 that the valve 42 is disposed to register its port 44 with the opening 3|, thereby permitting adhesive to flow from the pipe 34 through the opening 3! and through the valve passages 44 and 43 into the applicator nozzle. On the other hand, when the slide I 6 is moved forwardly to the position of Fig. 2, the port 44 in the valve 42 is moved out of registry with the supply opening It thus preventing delivery of adhesive to the applicator nozzle.

The applicator nozzle 3|, Fig. 3, has a hollow head portion 49 here shown as integral with the stem 29 and having the internal chamber 50 (Fig. 7), the head having the vertical exterior surface 5i, which is the work-engaging surface opposed to the roll 26, and having the substantially horizontal, exterior flat, work-engaging bottom surface 52 (Fig. 3). The surface 5| is provided with a narrow elongate, vertical delivery slot or recess 53 (Fig. 4), one marginal wall of which is preferably notched to provide spaced. fluid distributing ribs 54. The bottom wall 52 is likewise provided with an elongate recess or slot 55, (Fig. 6) one wall of which is provided with notches to define the fluid distributin ribs 56. An orifice c-r aperture 51 (Fig, 7) provides communication between the chamber 50 and the slot or recess 53 and a similar orifice or aperture 5! provides communication between the chamber 5| having a vertical bore designed to receive the tubular stem 29 of an applicator nozzle 30 whose rear (or left hand, as viewed in Fig. 2) face 5| is opposed to the roll 28, and so arranged that the work is gripped between said face and the roll when the bracket 28 is in its rear or operative position.

The tubular stem is provided in its side wall with a supply opening or passage 3| whose outer end is normally registered with a transverse bore in the wall of the bracket 28. This bore is internally screw threaded for the reception of the threaded end of a hollow fitting to which is connected the forward end of a flexible, fluid-supply conduit 34 (Fig. 1). This fluid supply conduit leads to a pressure regulating valve device 35 (Fig. 1) having a regulating handle 36 conveniently located for operation, and also preferably provided with a gauge 31 (Fig. 1) by means of which the operator may determine the pressure at which the adhesive is being delivered to the applicator nozzle. By turning the handle 35 the pressure may be regulated as desired. The fluid adhesive is supplied to the pressure regulator 35 by means of a pipe leading from the dellveryof-a force pump (not shown) located within the base I.

Referring to Fig. 2, the tubular stem 29 of the applicator nozzle houses a rotary valve 42 ha an axial bore 43 opening at its lower end in the lower part of the tubular stem 29 and havin a lateral port 44 at its upper end which may, at times, be registered with the supply opening in iii) and the slot or recess 55. The

orifices

51 and 58 are of small diameter, for example of the order of 0.01 inch-the proper diameter varying with the viscosity of cement and the effective pressure head at the nozzle.

The

slots

53 and 55 are of a length respectively corresponding to the widths of the desired ribbons of adhesive to be deposited on theinner surface of the upper and on the margin of the sole member and are preferably quite narrow relatively to their lengths, for example, in the ratio of 1-4. It will be noted that the adjacent ends of these slots do not reach to the corner where the faces 5| and 52 of the applicator head intersect, but that these adjacent ends of the slots are spaced a substantial distance from said corner.

An alternative construction of the nozzle is illustrated in Figs. 8. 9 and 10. In this arrangement the head portion 49 of the nozzle is provided with an imperforate bottom face and a rear, fiat vertical face 5i, the chamber being open at the face 5|. For cooperation with this head 49, there are provided-two or more interchangeable cover plates 59 (Figs. 9 and 10) each of these plates being provided with an aperture 59' for the reception of a bolt by means of which the cover plate may be clamped firmly against the vertical face 5! of the head 49'. Each of these interchangeable plates 59 is furnished with a shallow recess II in that face which is opposed to the vertical surface 5| of the head 48", the recess il being designed to register with the chamber 50 and being defined by a rim 6| having a flat rear face designed, leaktight, to engage the surface 5|. This rim has windows at 62 and at 63 so that when the plate is assembled with the head 49, very narrow slots (for instance of 0.001 inch width) are provided leading outwardly from the recess 60 and chamber 50, these slots constituting narrow, elongate delivery orifices, one being in the rear side of the head, which is opposed to the roll 26, and the other being at the bottom surface of the head. By providing a series of interchangeable plates 59 having

windows

62 and 63 of different dimensions, it is possible, by interchange of these plates, to provide delivery orifices or slots of different widths and/or lengths.

In the arrangement shown in Figs. 11 and 12, the applicator nozzle 30 has a hollow head portion 49 with the interior chamber 5|! and with a removable cover plate 59* held in place by a bolt 56' in general like the nozzle of Figs. 8, 9 and 10. However, in the arrangement shown in Figs. 11 and 12, the cement-delivery slot or window 63 is controlled by a manually actuable valve rotatable in a vertical bore 1| in the head 49 and having a handle 12 by means of which it may be turned. The valve is so designed that when in one position (Fig. 12) the slot or window 63* is unobstructed but when the valve is turned at right angles whereto the window is closed. By turning the valve to intermediate positions, the thickness of the ribbon of cement delivered through the slot or window may be varied as desired. Obviously, if the nozzle has a downwardly directed window or slot, this window or slot 92 of Fig. 10, this window or slot may be controlled by a valve similar to the valve 10 if desired.

Fig. 1 illustrates a shoe of the force-lasted type substantially as it appears during application of the cement by the apparatus above described. This shoe comprises the upper U, a sock lining (not shown) and the wrapper W, all united by a seam and assembled upon a last. The middle or cushion sole M is assembled with these parts, the wrapper standing upwardly as shown in Fig. 1, and being substantially perpendicular to the bottom surface of the middle sole M. I

In the operation of the machine, the operato after moving the slide with its bracket 28 forwardly, introduces the free marginal portion of the wrapper W (at any desired point in its length) between the roll 26 and nozzle 30, and then allows the slide to move rearwardly, thus gripping the work between the nozzle and roll. At the same time the valve 42 opens. The roll is turning and cement is now forced out through the vertical and horizontal delivery apertures in the applicator nozzle, these apertures extending, the one transversely of the width of the wrapper and the other substantially perpendicular to the edge of the middle sole, but parallel to the latter. The rotation of the roll 26 tends to advance the work, that is to say, move the shoe as a whole relatively to the nozzle. The result is that the cement which emerges from the applicator nozzle apertures is deposited as ribbons R and R upon the inner surface of the wrapper and upon the margin of the middle sole, respectively. Since, as above described, the nozzle apertures are spaced from the intersection of the vertical and horizontal faces of the nozzle, the ribbons of cement do not coalesce but are spaced apart, leaving an area C at the intersection of the planes of the wrapper and middle sole uncoated with cement. Thus, when thereafter the wrapper is tensioned upwardly (the cement having in the meantime set and dried) preparatory to laying it down upon the middle sole, there is no dried and set adhesive within the crevice between the wrapper and the outer edge of the middle sole such as would interfere with such upward tensioning of the wrapper. When pressure on the treadle is released, the nozzle moves forwardly to free the work and at the same time valve 42 is closed, thus avoiding waste of adhesive.

I claim:

1. In an apparatus for use in applying cement to the inner surface of the wrapper and to the margin of the middle sole of a force-lasted shoe, a nozzle having angularly related faces operative concomitantly to contact the inner surface of the wrapper and the margin of the middle sole, at least one of said faces having an elongate slot therein of a length substantially equal to the width of the desired ribbon of adhesive to be deposited, and means for varying the effective width of said slot thereby to determine the thickness of the ribbon of adhesive delivered.

2. In an apparatus for use in applying cement to the inner surface of the wrapper and to the margin of the middle sole of a force-lasted shoe, a nozzle having angularly related faces operative concomitantly to contact the inner surface of the wrapper and the margin of the middle sole, one at least of said faces having an elongate slot therein of a length substantially equal to the width of the desired ribbon of adhesive to be deposited and of a width substantially equaling the maximum thickness of the ribbon of adhesive and a rotary manually adjustable valve operative to vary the effective width of the slot, thereby to vary the thickness of the ribbon of adhesive delivered through the slot.

JACOB S. KAMBORIAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,097,572 Newhall Nov. 2, 1937 2,097,573 Newhall Nov. 2, 1937 2,100,342 MacKenzie Nov. 30, 1937 2,197,109 MacKenzie Apr. 16, 1940 2,225,065 MacKenzie Dec. 17, 1940 2,225,066 MacKenzie Dec. 17, 1940