US1928694A - Cementing machine - Google Patents

Description

0d. 3, 1933. A, JOHNSON 1,928,694

CEMENTING MACHINE Filed Jan. 27, 1931 3 Sheets-Sheet 1 8 m mam mmm Oct. 3, 1933. s, JQHNSQN 1,928,694

CEMENTING MACHINE Filed Jan. 27, 1931 3 Sheets-Sheet 2 5 KM a mmm Oct. 3, 1933- A. s. JOHNSON CEMENTING MACHINE Filed Jan. 27, 1951 3 Sheets-Sheet 3 w 7.1M I 1 A 1 a? an WW 3 4. l- J 7 6 Q i 07 n 7 W f0 Patented Oct. 3, 1933 UNITED STATES CEMENTING MACHINE Arthur S. Johnson, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey;

Application January '27,

9 Claims.

This invention, relates to cementing machines and is herein illustrated as embodied in a machine for the application of cement to the marginal portions of shoe soles.

In the manufacture of shoes in which the soles are secured to the uppers solely or primarily by means of cement, it is customaryto apply 2. marginal stripe of cement to the flesh surface of the soles prior to bringing together the soles and the uppers. The cement, which usually is of the pyroxylin type, must be applied in liberal quantities, but, in view of the difficulty of removing drippings of cement accidentally applied to exposed portions of the soles, it is essential that the flow of cement shall be adequately controlled. It is also very'desirable that the cement shall be applied in a stripe of uniform thickness. ,Fur thermore, it is preferable to apply the cement by means of an applying member positioned above the work so that the operator can see what is going on and make sure of the proper operation of the machine without inverting the Work. With this type of machine it is all the more difficult to control the cement and to avoid dripping on the work.

Accordingly, a primary object of the invention is to provide an improved cement applying machine in which the flow of cement can be adequately controlled and in which soiling of the work will be avoided.

With this in view, the illustrated machine, in accordance with an important feature of the invention, provides in a casing which surrounds a rotary applying member, cooperating control members associated with the same side of the periphery of the applying member within the casing and located one adjacent to the inlet of the casing and the other adjacent to the outlet thereof. The first of these controlling members,

regulates to a large extent the quantity of cement which is delivered to the applying member from an overhead cement pot from which cement flows by gravity into the casing. The second control memberserves both as a spreader to even up the cement on the periphery of the'applying member and as a control member to hold back within the casing such cement as is not removed from the applying member as, for example, during the intervals between the presentation of pieces of work. This second member is also provided with a portion coacting with a lateral face of the applying brush to prevent the formation of a bead at the edge thereof.

In the use of pyroxylin cement it is customary to provide the operator with a small receptacle 1931. Serial No. 511,563 f containing solvent'of any known kind in which spare applying members may be kept clean and any unremoved portions of cement prevented from hardening. Accordingly, another feature of the invention resides in the provision of a .receptacle positioned o'n-the machine beneath the applying member and provided with a cover which can be supported on this receptacle in an inclined position and arranged to catch drippings from the applying member and conduct them to the receptacle.

These and other features of the invention will bemcre fully described in the following specification taken in connection with the accompanying drawings, in which Fig. l is a front elevation of the machine;

Fig. 2 is a side elevation thereof;

, Fig. 3 is a detail in vertical section of a rotatable edge gage; I

Fig. l is an enlarged view of the front of the applying member with the casing surrounding that member broken out to show the cement controlling members contained therein;

Fig. 5 is a side elevation on a still larger scale of the applying brush with the casing in section and showing a shoe sole presented thereto;

Fig. 6 is a detail plan view of a latch controlling a valve for regulating the flow of cementfrom the cement pot, and v Fig. 7 is a perspective view of the applying brush, removed from its casing, with one of the cement controlling members.

The illustrated machine is of the type shown in Letters Patent of the United States No. 1,778,- 184, granted October 14, 1930, on the application of J. W. Cosgrove, and, like that machine, has as its applying member a driven} brush 10 mounted upon a shaft 12 which is supported in the upper half of a two- part frame 14, 15 and is arranged to be driven by an electric motor 16 in the direction indicated by an arrow in Fig; 4. The frame 14, 15 iscarried at the upper end of acolumn 18 and at the top 'of the machine there is provided an overhead removable cement pct 20 which delivers cement through a delivery passage 22 in a casting 23 constituting partof the pct 20 to a casing 24 surrounding the brush 10. A slide valve 26 operated by a hand lever 28 opens or closes this' passage 22. As in the patented machine, theframe is provided with an extension 30 having an overhanging hook 32 which cooperates with the lever 28 to prevent removal of the cement pct 20 unless the valve isclosed, The illustrated machine has,'in addition, .a stop plate 34..co'operating with a flattened extension 36 of the valve 26 to determine the maximum open position of the valve. The position of the stop plate 34 may be regulated by means of a hand screw 38. A spring latch 40 screwed to the under side of the stop plate 34 cooperates with a notch in the under side of the extension 36 to retain the valvein open position unaffected by any vibration of the machine.

If it is desired to hold the valve in closed position, a screw 42 threaded through the rear end of the lever 28 may be adjusted to the. position shown in Fig. 6 to hold the valve closed.

The illustrated brush it) differs from that shown in the patented construction in that it provided not only with the usual bristles 44 but also has wire bristles 46 passed through suitable openings in the hub 48 and designed to have an abrasive action upon the margin of the shoe sole 50 to rough up the sole and bring the cement into more intimate contact with the fibers of the leather and to allow the escape of air bubbles trapped in said fibers. It is rotated counterclockwise, as viewed in Fig. 4, so that it brushes against the surface of the sole 50 as the latter is moved from right to left.

The casing 24 resembles that of the patented construction in that it "is provided with an un-' dercut tongue 52 (Fig. 5) which is received in a dovetailed slot 54 in the frame of 'the'machine but differs therefrom in substantial particulars. In the illustrated arrangement the casing is held detachably upon the frame by means of an end plate 56 secured to the tongue 52 and to the frame of the machine by suitable machine screws. The casing 24 is in the form 'of a hollow casting closed by a removable end plate 58 and provided with an internal recessor passageway 60 (Fig. 4) in which the applying brush 10 is positioned; The casing has an inlet opening 62 communicating directly with the passage 22 and also has an outlet opening 64 through which the brush 10 projects and is exposed for the application of pieces of work to its under surface (Fig. 5). The hub '48 of the brush 10 fits closely within the casing 24, compressing a felt washer 65, so as to prevent cement from. flowing pastsaid hub. The casing is provided with a'cement controlling scraper 66 slidably mounted in the casing adjacent to the down-going side of the brush and adjustable toward and away from the brush by.

means of a screw 68. This scraper 66 is in the form'of a blade having a' tapered outer end positioned close to the periphery of the brush at a point on the down-going side thereof just below the inlet opening 62. Another cement controlling blade or spreader 70 has a beveled edge 71 which cooperates with the periphery of the brush on the down-going side thereof at a point closely adjacent to the outer opening 64. This blade is notched to provide a central portion which cooperates with the periphery of the brush and side arms 73 (Figs. 4 and 5) which cooperate with the lateral faces of the brush to prevent the formation of beads of cement at the edges of the-brush. The blade is positioned at an inclination to a radius of the brush at the point of intersection between the blade andthe periphery of the brush, so'that the ends of the .bristles pass the central portion of the blade without radical deflection thereof, and so that thecooperation of the arms '73 with the lateral faces of the'brush is gradual and not abrupt as would be the case if these arms coincided with a radius of the brush. The position of this spreader '70 may be controlled by means of a screw 72 and in practice the spreader is brought close to the brush bristles so that the cement carried by the brush is spread out into a uniform mass equal in thickness across the width of the brush. As long as the machine is in operation there is no tendency for cement to flow down past the up-going side of the brush because of the drag by the bristles of the brush and when the machine isstopped the valve 26 is closed, thereby shutting off the fiow of cement.

When the machine is in operation, the upper scraper 66 holds back most of the cement which is descending from the cement pot and, owing to the friction of the revolving brush 10, the cement is caused to roll over and over just above the end of this scraper, as illustrated in Fig. 4. The action of the spreader '70 in spreading out the film of cement and in preventing the formation of beads at the edges of the brush has already been set forth. It can be seen, if a piece of glass is substituted for the end cover 58, that in intervals between the presentation of peces' of work there is stored up between the lower spreader 70 and the upper scraper 66 a small quantity of cement, as indicated in Fig. 4. When work is presented to the brush, this cement is used up rapidly and as soon as the presentation of work ceases then it begins again to accumulate in this space. There is always a thin film of cement upon the periphery of the brush from the point at which it leaves the spreader 70 around to the point at which it aga n meets the inlet openings 62 of the casing.

Partly because of the quick drying qualites of the pyroxylin cement usually employed and partly because of the desire to apply a liberal quantity of cement, it has been found particularly difiicult to keep an ordinary fixed edge gage clean and in serviceable condition. Accordingly, the mach'ne is provided with a rotatable edge gage 74 which constantly presents a new surface to the advancing piece of work and which is kept clean by means of a cooperating scraper blade '76 which contacts with the side of the gage whch is leaving the work. Preferably the gage is in the form of a cylinder having a depending flange '78 and a.

hub (Fig. 3), the flange '78 extending below the hub so'as to protect a bearing 82 in which is' carried a shaft 84 for supporting the gage and to keep th s bearing free from cement. This cylindrical gage is secured to the shaft 84 for rotation in" the direction indicated by an arrow in Figs..

2, 4 and 5, and about an upright axis substantially at right angles to the shaft 12 on which the applying member 10 is carried. The bearing 82 forth-e upright shaft 84 is part of a hollow casing 86 adjustably supported on the frame by means of a clamp nut 88. This permits the gage to be moved toward and away from the applying member to bring the stripe of cement in exactly the desired relation to the margin of a sole 50 (Fig. 5). Within the hollow casing 86 are mitre gears 90 connecting the upright shaft 84 to a horizontal shaft 92 which is joined by a screw and-slot connection 94' (Fig. 3) to a stub shaft 96 having a tongue 98 arranged to enter a corresponding slot in the end of a shaft 100, provided in the patented machne as a jack shaft carrying 1,028,694" thus facllitating 'a'ssembly of-the: device andithe.

exclusion of cement. This gage and its mounting arenot claimed herein since they are claimed-in a copending' application Serial .No. 511,808, filed cover 110 which may, if desiredgcontairiasmall amountof solvent for the particularcement and ,which at any rate'will exclude air from' the brush and keep the same soft and in' a workable condition. To facilitate the applicationof this. cover after the gage nut 88 has been loosened and the gage moved back out .of the way, the casing .24 is provided with undercut grooves 1l2 .and 114 (Fig. 5) and the upper edges ofxthe sides of; the cover 110 are inturned (Fig. 2) and arranged-to snap into said grooves for frictional engagement with the casing when the cover is; applied to the casing.

Although the arrangement for controlling the cement on the applying'member ishighly efficient, it nevertheless is found practically impossible wholly to eliminate dripping, and I' have therefore-provided an arrangement for catching such slight dripping as may occur, therebyto avoid soiling: the floor of the room in which themachine is used. For this purpose, as wellas for others to be explained, there isprovided a receptacle 120 detachably mounted on a U-shaped A of the thicker part of the liquid such as may result from the drippings conducted to the receptawith similar lugs upon a bracket 150 in the other 70.13 brackets 140 and 150 may be brou t i level ceptacle is provided witha lug 128 arrangedto support the cover 124 in inclined position, as shown in Fig. 2, with-the cover directly beneath the applying brush 10 so as to catch drippings therefrom and constructed and arranged. to conduct these drippngs into the receptacle 120., This receptacle may be partially. filled with solvent, if desired, and utilized as a storage place for the cover 110 or for spare brushes (not shown) which may be substituted for the brush 10 on the machine. To make it more satisfactory for this purpose, there has been provided a removable rack 130 which will hold the immersed parts out cle by the cover 124. This rack is provided with an upstanding handle 132 by means of which the immersed parts may be lifted out of the liquid for use by the operator or when it is necessary to clean out the receptacle;

For the convenience of the operator, the machine preferably is also provided with a work table 134 clamped to a horizontal bar 136 which,

' in turn, is clamped to an upright bar 138 adjust ably held in a bracket 140 by means of a collar 142 and a set-screw 144. This bracket 140 reaches half way around the supporting column 18 and is provided with lateral lugs 146 which cooperate side of the column to receive clamp screws 148. The brackets 140 and 150 have dependingfeet 152 which bear against the sides of thercolumn and byproper adjustment of the screws'148 the position regardless of the exact dimensions of the column or the position of the brackets thereon. On the other side of the machine there is a similar arrangement of bars 154 and 156, this latter bar 156 being received within a clamp 158 on-the under side '01. a rack holder frame160. This. frame may beused to support .a wire rack 162 of the type illustrated and designed toreceive cemented soles 50 or to receive wooden racks or pipe racks of-the types found in shoe factories and used for a similar purpose. To this end, the

rack frame .160 has adjustable lugs 166 which cooperate with pivoted jaws 168 inclamping one side of the rack 162. r The jaws 168, pivoted on fulcrum pins .169, are. spring-pressed towardthe rack-:by coil-.springs'170 the tension of which 1 may be adjusted'by screws 1'72.

In the-use of the machine, supposing that th pct. 20 is full of cement and that the operator has provided himself with .a stack of work (not shown) on the table 134, he will remove the cover 110 to expose the brush anddeposit it in the receptacle 120, and then will adjust the edge gage 74 into the desired relation to the brush by loosening and tightening the wing nut 88. He

; then will open the valve 26 by movement of the lever 28 and, if necessary, will adjust the cement controller '66' and the spreader 70 to provide just the desired amount of cement 'on the brush'for application to the work. Soles 50 may then be passed beneath the brush from right to left, as viewed inFig. 4, their'progress being helped by the rotary gage 74 until the margins have been coated, whereupon each sole will be deposited in the rack 162to 'dry. The cement coatings are later revived as the solesare'em bodied in shoes. 1 V 1 i Havingdescribed myinventionjwhat I claim as new and desire to secure by Letters Patent of the United States is:-

1.In a cementing machine, a casing having openings at the and bottom, anapplying member rotatably mounted within said casing and projecting through the bottom opening for contact with pieces of work presented thereto, means forsu'pplying cement to the upper opening of said casing, a cement controllingmemb'er in said casing cooperating withthe periphery of the applying member on one side and adjacent to the upper opening of the casing, and another cement controlling member coacting with the periphery of the applying member on the same side of the casing and adjacent to the lower opening of the casing. V

2. In a cementing machine, a casing open at the top and bottom, a driven rotatable applying member substantially filling said casing and projecting through the bottom opening for contact with pieces of work presented thereto, means for supplying cement to the upper opening of the casing, a cement controlling scraper adjustably mounted in said casing with its edge adjacent to the downgoing side of the periphery of the applying member as said periphery passes the upper opening of the casing, and a cement controlling spreader contacting with the downgoing side of the periphery of the applying member as the lel to the axis thereof, a cement controlling scraper adjustably mounted in said casing and cooperating with the downgoing side of the brush at a point just below the upper opening in the casing, and a cement controlling spreader contacting with the downgoing periphery of the brush adjacent to theoutlet opening of the easing, said adjustable members and the casing portion, means for supplying cement to the upper posed for the presentation-of work, and a cement controlling member associated with .-the down-v going side of the brush having one-portion coopcrating withthe periphery of the brush and another portion cooperating with a lateral face of the flexible portion of the brush, said latter portion serving to prevent the formation of a bead of cement at the edge of the brush. a

5. In a cementing machine, a driven rotatably mounted applying brush having a hub and bristles extending therefrom, means for supplying cement to an upper portion of said-brush, and means for controlling the cement applied by the lower face of the brush to a piece of work comprising a blade disposed at an inclination to a radius of the brush at the point of intersection between the edge of the blade and the periphery of the brush, said blade being notched and pro-' vided with outwardly extending arms coacting with the lateral faces of the bristle portion of the brush to prevent the formation of beads-of cement'at the edges of the brush.

6; In a cementing'machine, a casing open at the top and bottom, a driven brush'having "an applying portion and rotatably mounted within said casing and projecting through the bottom opening for contact with pieces of work presented thereto, means for supplying cement to the upper opening of said casing, a cement controlling memberin said casing cooperating with the periphery of the applying member on the downgoing side thereof adjacent to the upper opening of the casing, and another cement controlling member coacting with the applying member on the downgoing side thereof at alower point in the casing having. va portiomassociated with the periphery of the brush andanother portion associated with thelateral taceof the applying portion of the brush to prefient the'formation of a bead at the edge of the brush.

7 a cementing machine, a cement applying member exposed at its lower side for the presentation of work thereto, an overhead receptacle supplying cement to. the upper side of said member, another receptacle mounted on said machine at a substantial distance'below said applying member, a cover for said latter receptacle, and means for supporting said cover in inclined open position directly beneath said applying member, said cover being constructed and arranged when the cover is in inclined open position to drain into the latter receptacle the drippings fromthe applying member.

8.In a cementing machine, a rotary cementapplying member, means for supplying cement to the upper side of said member, the lower side of said member being exposed for the presentation of the work thereto, a receptacle mounted on said machine and positioned to the rear of said applying member, said receptacle having a hinged cover positioned, when open, directly beneath said applying member, and means for supporting said cover in inclined open position to catch the drippings :from the applying member and lead them into the receptacle.

9. In a cementing machine of a type liable to dripping from an applying member to the under side of which work may be presented, a receptacle for the reception of disconnected machine parts and adapted to contain cement solvent, said receptacle being positioned below said applying member and provided with means to catch drippings from the applying member and conduct them to the receptacle, and a screen in said receptacle spaced-from the bottomthereof to support the machine parts out of contact with accumulated drippings of cement.

ARTHUR S. JOHNSON.

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