US2349245A - Machine for inking edges of shoe parts - Google Patents

Description

May 23 1944- R. R. CAMPBELL 2,349,245

MACHINE FOR INKING EDGES` OF SHOE PARTS Filed June 19, 1941 j 3 Sheets-Sheet 3 ,May 23 1944 y Rl R. CAMPBELL 2,349,245

MACHINE FOR INKING EDGES OF SHOE PARTS Filed June 19, 1941 5 Sheets-Shee'cl 2 May 23, 1944. "R. R, CAMPBELL 2,349,245

MACHINE FOR INKING EDGES OF SHOE PARTS u Filed June 19, 1941 3 Sheets-Sheet l' Flgl. E

Patented May 23, 1944 MACHINE FoaTNmNG EDGES oF snoE PART Rouel R. Campbell, Lynn, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application June 19, 1941, Serial No. 398,857

(c1. en 54) 30 Claims.

The present invention pertains to a machine for applying a coating to the edges of sheet material and is more particularly directed to applying stain to the raw edges of shoe parts.

In many styles of shoes, parts thereof are decorated by perforations, cut-outs and serrated edges. Sometimes it is desirable to stain these raw edges with a color similar to that of the shoe to impart a nished appearance thereto. In novelty shoes, it may be desirable to stain the edges to secure a contrasting color for decorative purposes. Heretofore, this has been done largely by hand, small brushes or pipe cleaners being employed for getting into the perforations, cut-outs and serrations. Because of the expensiveness of hand methods, machines have been developed for mechanically applying the stain. In such machines, the edges of the shoe part `are coated by supplying a quantity of stain to the whole of the iiesh or Wrong side of the shoe part and allowing the stain to ow about the edges while protecting the opposite, display or grain side by holding it against a clean shielding device. While coating the entire flesh or wrong side of the shoe part does not spoil the appearance of the Work, because it is hidden from view, a considerable quantity of stain is absorbed by the fibrous texture of the flesh side of the work and is wasted. Moreover, according to some, the stain adversely affects the leather, causing it to feel tinny.

It is an object of the present invention to provide an improved machine of the type heretofore employed which will rapidly and effectively coat the edges and cut-outs of parts of shoes, which will maintain the display side clean andyunblemished, and in which substantially no stain will be deposited on the flesh or wrong side of the shoe parts. Y

In the prior machines, the work was held with its grain or display side against a shielding mem.- ber, having a surface designed to protect the display side of the work fromthe ink, by a perforate member such as felt, cheesecloth, or a wire cloth of fine mesh which engaged the opposite side of the work and was interposed between the work and an ink carrier. Means was provided for pressing the members together to express the ink from the ink carrier through the perforate member over the entire opposite side of and about the edges of the work. In the present machine, a feature of the invention residesin a perforated member other than fibrous ory metallic in character for controlling the ow of ink which, Iaus illustrated, is interposed between the inkcarrer and the shielding member, means to bring the members together to enclose the work, and means thereafter to press the perforated member, while in engagement with the shielding member around the edges ofthe work, against the ink carrier.

As shown herein, and in accordance with other features of the invention, the shielding member and perforate member take the form of endless rubber or `synthetic rubber-like belts portions of which Yare arranged to engage the opposite sides of the Work, means being provided for moving the belts past an ink applying roll and pressing the perforate beltinto contact therewith. Also, as illustrated, invention resides in the employment of means for varying thevpressure between the perforate belt and the ink applying roll.

Still other features of the invention reside in the provision of cleaning devices for the surface ofthe shielding belt, which has a highly polished surface so-that ink will not adhere readily to it, or is made of an ink-repellent substance. These cleaning devices are a water bath for washing the ink from the surface of the belt and a rotating brush for drying the surface of the belt.

The machine vwill now be described in detail 4with reference to the accompanying drawings, in which Fig. 1 is a rear elevation of the entire machine;

Fig. 2 is a side elevation of the machine as seen ,from` the right end of Fig. 1;

v. Fig. 3 is a side elevation of the machine as seen from the left end of Fig. 1 Fig. `4 shows a piece of work of the type to which the stain as it be applied; Fig. 5 is a section on the line V--V of Fig. 1;

Fig. 6 is a section on the line VI-VI of Fig. 5;

Fig. '7y is an enlarged fragmentary plan View of `the multipore belt; Fig. 8 is an enlarged fragmentary section of vthe multipore belt;

Fig. 9 is an enlarged fragmentary section, showinglthe work disposed between -the multipore belt and the pressure applying` belt, moving toward the ink-carrying roll; l i Fig. 10A is an enlarged fragmentary4 section, showing the work between the multipore belt and the pressure applying belt in engagement with the ink-.carrying roll; Fig. v 1l is an enlarged section on the line Fig. 12 is an enlarged section, showing the leading edge of thework as it passes over the ink roll; and v Fig. 13 is an enlarged section, showing the trailing edge of the `work as it leaves the ink roll.

' A shoe part of the kind to which stain is to be applied is shown by way of illustration in Fig. 4 as a shoe tip W having perforations d and a serrated. edge s at the rear portion thereof, as is customary. It is desirable to treat these raw edges with a stain, hereinafter called ink, which corresponds to the color of the display side of the shoe, or is in contrast thereto in the case of novelty shoes, without getting any of.'` this ink on the display side and substantially none on the flesh or wrong side. In order to do this, it is necessary to shield the display side of the shoe part and to supply a quantity of ink to the.' wrong: side of the shoe part in such a manner that only the raw edges are exposed to the ink. This is accomplished by placing the shoe. part.` betweerrapair of members I and I2 having faces. III-.andy I6 which may be brought together about the shoe part to enclose the same (Figs- 91 to 113'). The member I2 is a shield designed to protectv the display side of the work, and the member I0 is a perforate, non-absorbent body ofrubber'l orf rubbersubst'it'ute, through the perforati'onsvv p11 off Which ink may beI passedto the edges-of` the' Work; The member Il); whilerinengagement with the member IZf and enclosing the work, is pressed'fagainst an absorbent or'bibulous-member l'whi'chis supplied withink' from a receptacle 20 (Fig: .5-)*.

The perforate member IIJ femployedhereinis manufactured in sheetf'orm bythe`Uhi-ted States Rubber Company and is disclosed in theform employed hereinA by Patent No'. I 2,032,941, granted March 3, 1936, to CLE. Linscott etal., assignors to the UnitedStates-Rubber' Company. The pores in this multiporesheet range from" .OIlUllf-to .0008 of an inch or larger@ in diameter and vfrom 000' to 10,000 or more perforationsl/per squareinch in number. Unstretched", the material appears to be imperibrate, the perforations not beingreadily visible to the naked eye and under-high magniiication would appear as-'shown in Figs. 7 and8'. Atfthe ypresenttime a multipore sheet containing about 3,400'perforatiensper square inchV seems to give the best results, but it isto' be 'understood that itis entirelyl within thevscope ofthe invention to use a multipore-sheet With` a greater or smaller number of perforations as the particular conditions-change; Y

Since the surface I6" ofthe mer'nberIZl` conta-cts the display side of the work;` itis-necessary to keep it absolutely free of ink. For'this reason, the member I2, which is rubberfis providedwith a very smooth, polished surface which tendsA to shed any ink coming in contacttherewith. The same result 'may also be had rby jusing a synthetic rubber which isresistant to ink; thatis, it has no aiiinity for the ink and consequently, if any ink does come in Contact with the surface, itiwill not cling to it. i

It is to be observed that the 'perforationslp in the perforate member II'J are separate'dironjiv one another by impervious portions and. areV noncommunicating; that is,` the' material between the perforations is not permeable and there. is therefore no vopportunity for the ink to passfrom one pore4 to another a'sthere would'be'a ow of ink from one opening to another in. a permeable member such as cheesecloth, felt, or a Wire. cloth of fine mesh. Therefore, the perforatev member ID affords a means for controlling the passage ofinkto the workbecause, unlikea bibu-lous member such as felt, cheesecloth, or a wire cloth of ne meshthroughevery portion of which the ink' Willpas's with the maximumv freedom of movement fromonepore to another v'without re- '[5 straint, the passage of ink through certain portions or areas of the perforate member may be stopped by blocking or sealing the upper ends of the perforations in these portions or areas. The pores are capillary in size and, because of the fact that the material between the pores is impervious, that is, does not allow the ow of ink from one pore to the next; are referred: to in the appended claims as being discrete capillary pores, or as pores separated or isolated from each other. As illustrated, the Work W lies on the surface I4 of the perforate member I0, thereby covering the upper ends of the perforations p, and when the member I2 is moved into contact with the Work and with the member IIl (Fig. 9), the Work is pressed so irmly against the perforate member that the upper ends of the perforations p are sealed by contact of the work with their upper ends. The sealed upper ends of the perforations trap a quantity of air when the member I@ is movedinto engagement with and is pressed against the ink-carrying member I8 (Figs. 10 and 12) Consequently, the ink expressed-by reason of the pressure exerted against the ink-carrying member rises only part way through the perforations. Some leathers are not as. dense vas others' and in some instances there may bea slight leakage of air through the leather. Consequently, a little ink may reach the top' of the perforations and come in contact with the Wrong side'of the work, but the amount of such leakage is minimized because of the short space of' time thework is under pressure and because of the seal formed between the surfaces` I (I and i551 of the members It! and I2' when they are broughttcgether to enclose the work. Other factors may cause or contribute to this sealing of the perforations; but the important thing is that no ink passes through the pores when they are covered by av layer' of material such as a piece of work. The member I2 does not seal all of the perforationsin the member It? dueto the fact that the surfaces of the members I0 and I2 do not conform perfectly to the edge of the work, as seen in-,Figs. '12 and 13. Because of this, a closed passage-P is formed entirely around the work (Fig. 9'), the' walls of the passage being formed by the edge of the Work and a portion of the surfaces of lthe members Il) and I2 adjacent to the edge of the work (Figs. l2 and 13). Since the upper ends oflthe perforations p which open into the passage P are not confined or obstructed, the ink expelled from the ink-carrying member vpasses freely through them and lls the passage P (Fig. 1,2), thereby coming into contact with the edge ofthe Work. It is to be observed that, when the members Ill and I2 are brought together, the Work W is forced into the surface I4 of the perforate member II) and, as a result, that portion of the member I!! adjacent to the edges of the Work slopes sharply upward toward the member I2. The deformation takes place almost wholly in the member I D because it'is so full of perforations that when pressure is applied it will yield Whereas the solid imperforate rubber member I2 Willnot yield appreciably because it is made of a firmer and. less readily deformable material than. that used for the member I. 'I'his tendency for the member II) to wrapv itself about the edges of the work bends the perforations p in the direction of the edges of the work (Fig. 12). When, therefore, the ink is forced through these perforations, itis squirted against the edges ofthe work with some force. When the membersv I0 and I2 are moved out of engagement with the ink-carrying member I8, the ink-carrying member, which is very absorptive and is of a resilient nature, is allowed to expand and, in doing so, it sucks back the ink in the perforations of the perforate member, thereby withdrawing the ink from the passage P and the perforations p so that no ink stands in these perforations (Fig. 13). This prevents the capillary action of the perforations from holding ink during the time when the perforate member is not in Contact with the ink-carrying member. It is important that there should be no ink in the perforations prior to pressing the member II) against the ink-carrying member because, if ink lled these perforations, there would be no opportunity for air to get into the upper ends of the perforations and thus the function of the perforate member would be partly impaired.

As illustrated in Fig. 5, the members Ill and I2 are preferably endless belts 22 and 24 so arranged that the portions I and lI2 thereof are parallel. These belts are supported for co-operation on a frame consisting of a base 26 and upright walls 28. The belt 22 is composed of the material disclosed in the above-mentioned Patent No. 2,032,941 and has a multitude of fine perforations p therein (Fig. 8). The belt is nonabsorbent and forms a support for the work. Through long usage, the perforations of the belt 22 may become clogged by small particles of solid matter in the ink and, consequently, the belt is mounted on an independent subframe 30 which rests on the base 26 of the frame to permit the belt 22 to be moved bodily from its position beneath the backing belt 24 without disassembling any of the parts of the machine. As illustrated, the belt 22 is mounted on guide rolls 32 journaled in the walls of the subframe, the latter having wheels 34 adapted to support the subframe on the base and to facilitate rolling the subframe into and out of position.

The ink-carrying member I8 and the ink receptacle 20 are also supported by the subframe 30 and, consequently, may be removed as a unit, together with the belt 22, for cleaning and refilling. Furthermore, since the subframe carrying the belt 22 and the ink receptacle 28 forms a readily replaceable unit, it is apparent that color changes may rapidly be made with little eiort r by replacing one unit for another whenever it is desirable to change from one color to another. The ink receptacle 20 is fastened between the sides of the subframe and between the runs of the belt 22 with its mouth adjacent to the upper run of the belt (Fig. The ink-carrying member I8 is an ink-carrying roll consisting of a resilient core 36, preferably of rubber, and an absolute surface 38 of felt or some other similar bibulous material in the form of a sleeve disposed around the core. The resilient core permits the surface 38 to flatten out when pressure is applied, thereby providing a broad area of contact between the belt 22 and the surface 38. The ink-carryingroll is journaled in the walls of the receptacle with its lower side dipping in the ink and its upper side in engagement with the portion Ill of the upper run of the belt 22. If the contact between the portions I0 and I2, thework, andthe inkcarrying roll is confined to a line contact, thev effectiveness of the apparatus would be largely lost because there would be a tendency for the ink forced upwardly into the passage P at the point where the pressure is applied to leak from the passage P between the surfaces of the work, and the belts at each side of the point of applied pressure where the pressure falls olf. For that rea'- son, it is desirable to have the contact between the portions I8 and I2, the work, and the inl;- carrying roll extend over a substantial area of the surface of the ink-carrying roll so that when the belts are pressed against the ink-carrying roll, the surfaces I4 and I6 will be sealeduniformlyV over an area of substantial extent.l To this end, the ink-carrying roll is arranged with its top above the normal plane of the upper run of the belt 22, that is, so that the top of the ink roll deiiects the upper run of the belt 22, causing it to pass over an arcuate section of its surface.

A doctor roll `40 is mounted adjacent to the ink-carrying roll at the upgoing side thereof to squeeze the excess ink thereform. The doctor roll 4U is journaled at its ends in bearings 42 slidably mounted in slots 44 formed in the walls of the receptacle 28, and screws 4B are provided for adjusting the position of the bearings 42 to vary the degree of the wringing action between the ink-carrying roll and the doctor roll.

Tables 48 and 50 are mounted at opposite ends of the subframe adjacent to the incoming and outgoing sides of the belts. The table 48 is xed tothe walls 28 and serves as a support for a pile of work and as a guide for sliding the pieces of work to the bite of the belts. The table 50 is fixed to the subframe and slopes downwardly from the exit side of the belts, by which the nished work is conducted to a bench or table at the back of the machine. The backing belt. 24 is mounted between the walls 28 upon guide rolls 52, 53, '54, 55 and IIB and under a roll 'Ill with the portion I2 in engagement with the portion I0 of the belt 22. The rolls 5.4 and provide means for driving the belt in the direction of the arrows (Fig. 5) and, to this end, are mounted on shafts 58 journaled in the walls 28. Gears 56 (Figs. 1` and 2) are lfastened to the ends of the shafts 58 and are driven by means of a gear 60 with which they mesh and which, in turn, is driven by a gear 62 attached to the shaft of a pulley BI connected to an outside vsource of power by a belt 68. The rolls 53 and 1I) hold that section of the belt 24 at the right side of the top of the ink-carrying rol] I8 (Fig. 5) in contact with the adjacent portion of the belt 22 and substantially in a horizontal plane, thereby providing means for feeding the work to vthe ink-carrying roll and sealing the work between the surfaces I4 and I5. As illustrated, the roll'IIl is mounted for rotation on a shaft 'I2 which is journaled at its ends in the walls 28, one end of the shaft 'I2 having a gear B3 fixed thereto which meshes with the gear 60. The guide roll52 is mounted at the left side of the top of the ink-carrying roll with its bottom side below the bottom sides of the guide rolls '53 and 10, thereby to wrap the sections of the belts 22 and 24 at the left of the guide roll 10 downwardly about the surface of the ink-carrying roll. Theamount of wrapping and pressure between the belts over the area of Contact with the ink-carrying roll may be varied by moving the guide roll 52 which, for this purpose, is mounted on a shaft 52' journaled between the 'ends of a pair of arms 14, the latter being turn'- ably mounted on the ends of the shaft 12. `The arms 14. in turn, are journaled in the walls 28, as illustrated. By tilting the arms 'I4 in their journals, the guide roll 52 may be moved about the shaft 12 as a center,v and this is accomplished by fastening lthe opposite ends of the arms to bell cranknfleversfl. The-bellrcrank levers are piv otally'rfastened at- 18 tozlinks 80 (Fig.l 3f); which, ini turn, are pivotally attached to the side walls 28 at 82. Pawls- 84 are provided for locking the bell-crank levers in the-desired position. The pawls; are pivotally mounted at one end. on. a spindlev lrjournaled at its ends between the bellcrank levers 16. The other ends of the pawls engage onefof a number of serrations 88 formed on the edges of the walls 28. In order to hold the pawls outvof engagement with the serrations duringvmovement of the bell-crank leversl 16 to increase or decrease the pressure, the pawls are joined by links 90 to rods 92 which extend upwardly along the inside of the bell-crank levers 16 and are joined at their upper ends by a hand grip 94. byy whichthe pawls may be lifted and held while the adjustment. is being made.- Springs 96 are placed about the rods 92 and serve normally to urge the pawls 84 in a counterclockwise direction, as seen in Fig; 3, to return the pawls to locking position when the hand grip 94 is released.

` While the belt 24 is driven by means of the guide rolls 54 and 55 in the directions of the arrows, the belt 22 is only driven by contact with the belt 24. This arrangement eliminates anycomplicated'driving connections which would be necessary to drive the rolls 32 and at the same time permits ready removal of the subframe and replacement thereof; As constructed, the subframeA is heldin place only bythe guide roll 52 and that portion of the belt passing around it which-.lies against the uppersurface of the'inkcarrying roll s that the'top-of the ink-carrying roll is pocketed behind the guide roll 52 and cannotv be moved outwardly without first raising the latter. To prevent the inward pressure of the guide-roll 52 from pushing the subframe too far beneath the belt 24, a pair of stop screws-98 (Fig. 3) are threaded through bosses |00 fixed to the walls of the subframe 30 with their ends abutting the edges of the walls 28.

In order to keep the backing belt 24 taut at all Ytimes irrespective of theposition of the guide roll 52., a tension roll |02 is provided. This roll bearsagainst the backing belt 24 and is provided with agrooved surface (Fig. 6). to permit any ink on the surface of the belt to pass beneath it, sncefit is not desirable to have the ink squeezed off theY belt at thispoint and thereby caused to dripvdown onto-the belt 22. The roll |02 is journaled in bearings |04 which are slidably mounted in slotsY |05, formed in the walls 28 so that they may be moved to and from the belt 24. Screws |08 .are provided for adjusting the position of the bearings |04, and consequently the roll |02, in ordertov procure the proper tension in the belt 24. Itis evident that an increase in the tension of the belt 24 also uniformly increases the pressure between the belts along that portion thereof between thetguide rolls 52r andi'lil.

Ordinarily, the ink" comes in contact with the surface of the belt 24- only where the passage P is formed about the work and through the cutouts in the work. Some additional ink may, however, be present due to the fact that the contact between the surfaces of the belts may not be absolutely perfect and the pores themselves may not be wholly closed by the pressure. When, for* example, particles of dirt or fragments of leather are carried between the surfaces of the belts, the surfaces may be held apart suiiciently to permit a small amount of ink to leak through the perforations p toA and between the surfaces of thebelts. Conscquently,this surface I6 must constantly be cleaned to remove-any ink that might otherwise find its way to the display or grainl surface of the work. This is accomplished by looping the belt 24 through a water container ||0 supported by a. pair of straps ||2 which are fastened tothe walls of the container I0 by means of screws |4 and to the walls 28 by screws ||6. The belt 24 passes about a roll ||8 submerged in the container l0, the roll ||3 being journaled in the lower ends of the straps ||2. The water serves to wash the ink from the belt 24 and, when the water becomes too dirty, the container may be emptied throughone of a pair of cocks (Fig. 3) and relled with clean water through the other. After the washing, the belt must be dried, and for this purpose a wrnger roll |22 is provided for` squeezing the water from the surface of the belt back into the container ||0. The wringer roll |22 ismounted adjacent to the guide roll 5'5 and contacts the belt where it passes over the guide roll. The wringer roll is journaled between a pair of angular members |24 which are pivotally mounted at one end tothe upper ends of the straps ||2 on studs ||3. Screws |26 are passed through the opposite ends of the members |24, the lower ends of the screws resting upon the top edges of the walls 28 and thereby providing means for increasing or decreasing. the pressure between the rolls |22 and 55 and, consequently, the wringer action between the wringer roll |22 and the belt 24. While the wringer roll |22 squeezes most of the water from the surface of the belt 24, asmall amount of moisture remains and tends to cause` the ink to spread. It is necessary, therefore',4 completely to remove this moisture, and this is accomplished by means ofv a rapidly rotating brush |28 which is mounted on a shaft 3|] adjacent to the wringer rollv |22 at the right-hand side of the machine, as seen in Fig. 5, with the tips of its bristles barely touching the surface of the belt. The shaft |30 is journaled in arms |312 (Fig. 3) which are mounted on the ends of the studs I3. In order to increase or decrease the wiping actionv of the brush |28, adjusting screws |34 are provided for changing the position of the brush with respect to the surface of the belt. The screws |34are threaded through bosses |35 xedvto the walls 2.8 with their ends abutting the arms |32. A pulley |58 (Fig. 2) is fastened to the shaft |30, the latter being rotated by a belt which is connected to an outside, source of power. The rotation of the brush not only wipes the belt but sets up currents of air which tend to evaporate the moisture on the belt. A guard |42 is placed about the brush |28, the guard being fastened to the members |24. y

` When the machine is in operation, the work is pushed along the table 48 until its leading end is gripped by the bite of the belts andI drawn inwardly between them. At this time, before the work reaches the ink-carrying roll, the belts, which are under considerable tension, enclose the work, as shown in Fig. 9, the surfaces |4 and ||5 of the belts meeting all around the work and forming a passageA P completely surrounding the work, While the pressure between the belts is not Avery* great at thispoint, it is sufficient to cause the work to seal the upper ends of the perforationsp beneath it and to form a seal b`etween the belts. As the work enclosed by the belts moves on to and between the ink-carrying vroll |8 and the rolls 'I0 and 52,v the belts are uniformly squeezed against the. ink-carrying roll, thereby depressing the surface 38k of the ink-carrying roll (Fig. 10) and expressing the ink therefrom. As the leading en'd of the work enters the bite between the ink-carrying roll and the roll 1B, the ink rises through the'perforations p (Figs. l and 12,), as indicated bythe arrows, and passes through the upper ends of the perforations which terminatey in the passage P and into contact with the edges of the Work. The air in the other perforations, the upper ends of which are closed by the work and the surface I6 of the belt 24, is trapped therein and prevents the ink from rising to the tops of these perforations. As the work is passed beyond the ink-carrying roll and the roll 52, the pressure is relieved and the felt on the ink-carrying roll is allowed to expand; whereupon a suction is set up which withdraws the ink from the passage P and the perforations d (Fig. 13). The work is finally carried out by the belt 22 to the delivery table 50. The pressure and the amount of ink are variable factors and must be adjusted by experiment for the particular kind of leather being finished, since they vary with the density andthe thickness of the leather and sometimes -with the finish.

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 coating the surfaces of the edges of a piece of work, separate means for engaging the opposite surfaces of the work, one of said means having a plurality of discrete capillary pores therein, said separatemeans being movable into intimate contact with each other and with the Work, thereby to cause those pores in one of said means which terminate op, posite the other one of said means and an imperforate portion of the work to become sealed while the remaining pores adjacent to the edge surfaces of the work are unobstructed, a bibulous member supplied with ink adjacent to l said means, and means for relatively moving said separate means and the bibulous member` to bring the means having discrete capillarypores therein firmly against the bibulous member to cause ink to iiow through said unobstructed .discrete capillary pores onto the edge 'surfacesof the work.

2. In a machine for coating the `surfaces. -Aof the edges of a piece of work, separate means for, engaging the opposite surfacesof the work, one of said means having a plurality of unconnected pores therein, said separate means being movable -into intimate engagement with each other and with the work, thereby to cause those pores in one of said means which terminate opposite the other one of said means and the imperforate portion of the work to become sealed while :the remaining pores .adjacent to the edge surfaces of the work are unobstructed, a bibulous member containing ink, and means for relatively moving said separate means and thebibulous member to press said means having pores therein against thel bibulous member to cause ink to4 flow through the said unobstructed pores onto the edge surfaces of the work. l

3 In a machine for coating the edge-'surfaces of a piece of work, separate means for engaging the opposite surfaces of the workfone lof said means being composed of Yrubber and' having 'a' plurality .of pores therein isolatedq-vfromt'each: other by impervious portions, :said separatemeans being movable into intimate engagement with each other and with the work, thereby to close the pores in one of said means which terminate opposite the other'one of said means and an imperforate portion ofthe work while the pores opposite to an edge or a perforation in the work are open, a bibulous member containing ink, and means for relatively moving said separate means and the bibulous member to press the rubber one of said means against the bibulous member to cause ink to flow through the open pores onto the edge surfaces of the Work piece. l

4. In a machine for coating the edge surfaces of a piece of work, separate means for engaging the opposite surfaces of the work, one of said means being composed of rubber and. having a plurality of pores therein isolated from each other. by impervious portions, said impervious portions being more than r15% ofthe total area of any unit of area, said separate means being movable into intimate engagement with each other and with the Work, thereby to close the pores in onev of said means which terminate'opposite the other one of said means orthe imperforate portion'of the work while the pores opposite to an edge or a perforation in the work are open, a bibulous member containing ink, and means for applying pressure to said separate means while in intimate contact in a direction to press the rubber one of said means against the bibulous member tocause ink toV now through the open pores onto the edge surfaces fof the Work.

5. In a machine for coating the edge surfaces of a. piece of work having perforations therein, separate means for engaging the opposite surfaces of the work, one of said means having a plurality of pores therein separated from one another by nonpermeable portions, saidV separate means being movable into intimate engageu ment with each other and with the Work, there by to seal the pores in said one of said means which engage an imperforate portion of the workand the other one of said means, while the pores opposite to an edge or a perforation inthe work are open, a bibulous member containing ink, and means for applying pressure to said separate means while in intimate contact in a direction to press said porous one of said means against the bibulous member to cause ink to flow through said open pores onto the edge surfaces of the work, the ink in said closed pores being prevented from rising therein by air trapped in their upper ends.

Y 6. In a machine for coating the edge surfaces of a piece of work having perforations therein, separate means for engaging theopposite sur faces of the work, said separate means' being movvable into intimate engagement with each other to cause ink to flow 'through said unobstructed pores onto the edge surfaces of the work and toV trap rair in .said closed pores thereby preventing the now 'fe'f filnk onto the imperforate portion `lof the Work-or lsaidoth'er one of Y'said means.

'7. In 'a machine for coating the-edge surfaces of a piece of. Work, y.a shielding member engaging the display surface of the-work, a .perforatecontrol member engaging the opposite .face ,of the work, said control member being made of avyielding, rubber-likematerial with-a smooth Asurface adapted to be broughtintofirm Contact with one face of the work, said control member having a plurality of spaced, pore-like perforations emerging through said. smooth surface and noncommunicating `adjacent to said surface, whereby they are sealedxby the A.piece of Work, an ink carrier for supplying. ink to the other surfaceof said perforate member, and means'- for squeezing together said members, a piece of Work interposed between themand said ink carrier, thereby to cause ink tooW throughthe unsealedgper-l forations onto the edge surfaces of the Work.

8. A machine for coating fthe edges of 4a shoe part comprising an endless backing belt -or protecting the display side of the Work, means for holding the shoe part against -said backing belt, means vfor supplying `ink to the edges of said shoe part While held in engagement With the backing belt, and means to wash the backing belt While out of contact witnthe first-namedmeans.

9. A machine -for coatingA the edges of a-shoe part comprisingmeans having a surface for supporting the Work, an endless belt a portion of which is parallel to the surface of the supporting means for engaging the opposite side ofthe work, said supporting means being a-perforate nonabsorbent member, means for moving said surfaces into and out of engagement to closesuccessive pieces 'of work, an 'ink-applying member adjacent to the 'first-'named means, means for supplying ink to said 'ink-'applying member, means for pressing said first-named means 'and said endless lbelt against said 'ink-'applying member while in engagement, 'and means for `Washing said endless lbelt while out of Tengagement with 'the rst-named lmeans to insure a Vclean portion for each pieceo'f Work.

10. A machine -for coating `the edges of "a shoe part comprising means-having a surface -for supporting one sideof 'the work, an endless belt `a portion of which -is parallel to the 'surface of the supporting means for engaging-the lloppositelside of the Work, said supporting means being-a nonabsorbent multipore mem-ber, -means Lfor .movin'g said surfaces-into andvout of engagement toenclose the Work, an ink-applying member adjacent to the rst-named means, means for 'supplying ink to said ink-applying member, means for pressing said endless belt and said first-named means against said ink-applying member While in engagement, and a bath through which the endless belt passes yto wash the ink therefrom.

11. A machine for coating the edges vof a shoe part comprising means having a surface for supporting one side of the work, an endless belt fa portion of which is parallel tothe surface of the supporting means for engaging fthe opposite 'side of the work, said supporting means lbeing anonabsorbent multipore member, means for moving said surfaces into and out of engagement to enclose successive pieces of work, a resilient inkapplying member adjacent to the rst-named means, means for supplying ink to said ink-'applying member, means for "pressing said `firstnamed means against` the ink-applying member While in vengagement with theendlessfbelt, zand;

means for washingand :drying lheyendles's belt While fout-"of Contact with said nrstnamed-imeans.

12. -A machine for coating the edgesfoffa shoe part. comprising :an fend-less. backingl :beItiorY-protecting the vdisplay Aside fof: the work, means for holding ith'essh'oe part against said Lbackingb'elt, means forvsupplying ink tof-the-'edges ofstheisho'e part While held in 'engagement' with :the .backing belt, and :means Vfor .washing and drying ltheendless `belt while Vout .of contact vwith sai'dirs'tnamed means.

13. A machinerfor .coating the edgessofl aishoe part comprising'means vhaving fa. surface fortsupporting 4one side Aof A-thework, an endless :belta portion of which isgparallel to the fsurface fof-ithe supporting 4means rfor eng-aging the oppositesides of the work, -saidsupporting means being :fa vnonabsorbent multipore member, means for moving said surfaces into tand out of `engagement Ito enclose successive vpieces "of Work,.a.r'esi1ient'ink applying member yadjacent :to the Vinst-:named means, means for supplying Iink t'o sai'd ink-apa plyin-g member, means .for pressing s saidrst.- named, means against saidv ink-applying .member While in engagementwith Vthe endlessfbelt, ymeans for washing the endless belt while. not'in contact with the rst-named means, and :a brush for drying the belt.

14. A machine for coatingftheledges '.offaishoe part comprising ymeansl having asurface--for supporting onesi-de of theLwork, anvendless belt a portion of which is .parallelifto thesur-tace of-the supporting means for engaging z'theopposite side of the Work, saidsupporting meansibeing .aznonabsorbent multipore member, meansfor mov-ing said surfacesinto and out .of engagementtoenclose successive "pieces of Work, .an ink-applying member adjacent "to lthe first-named means, means for 'supplying ink-.to sa'dink-applying member,"means for 'pressing -said rst-named means a'gainst /saidnk-"applying member While in engagement "with "the endless belt, .a r'bath through which 'the "endless beltl'passes to wash inkfthere'f'rom whil'eit isfout of -contact with the rst=na`rned means, and "a .cylindrical "brusli xotatable -in contact Withthe v'belt toV dry the same.

15. Amachineffor coatingth'e 'edges' 'of "a 'shoeA part comprising V'a support `frortne `vvo'rk '"c'onsi's't ing 'of ya 1non'absorbent 'multipore endles'sfbel'tg means having a surface parallel t0 a prtioncf the endless -b`elt for-engaging thebpposi'te side of the ywork, means for bringing the-parallelsurfaces of `said endless `belt 'and saidf'rstenamed means together to enclose the-'Work, an ink-ape ply-ing member adjacent to the endlessBreit,v

part comprising va support c"for sthe fwork Aconsist-- ing fof. anle'ndless multipor'e lb'el't adapted "to en! gage #one .surface of ithe. f-wcrk, meanshaving' `a surface parallel lto a portion df-the endless `belt for engaging 'the opposite fsurface of Athe fwornf means forlbiinging Lthe fparlallel l"surfaces -fof sld endless `belt1and said llrsty-named :means togetlier' to enclose the Work thereby v"to-'form alclosedpase" sage entirely -Jsurrounding the `worniorie wall of whichlis the fedgeiof thework,-.an I:ink absorbent member adj acentV tto that? pbrtion 'ofth'e endless multipore beltzpara'llel to tneirst-'named'meanaan fink receptacleforfsupplying-ink to said alb--A sorbent' member, zand. rmeansfrfpressing fs'aid in engagement toWard the absorbent member to bring the belt into engagement with it.

17. A machine for coating the edges of a shoe part comprising a support for the work consisting of an endless multiporebelt adapted to engage one surface of the Work, an imperforatebelt having a surface parallel to a portion of the multipore belt for engaging the opposite surface of the Work, guide rolls, one' of whichis driven, lfor bringing the parallel surfaces. of said multipore belt and said imperforate belt together to enclose the Work, an inl; receptacle,l a felt rollg adjacent to the endless multipore belt and having a lower portion which dips in said ink receptacle, and a roll in engagement vwith, the imperforate belt operable to press saidmultipore belt While in contact with the imperforate belt and a shoe part against the felt roll.

18. A machine for coating the edges of a shoe part comprising avsnpport for the work `consisting of anendle'ss multipore belt adapted to enn gage one surface of the Work, means having a surface parallel to a portion of the'endless belt for engaging the opposite surface of the Work, means for bringing the parallel surfaces of said endless belt and said nrst-named means together to enclose the Work, an ink absorbent member adjacent to that portion of the endless multipore belt which is parallel to the first-named means, an ink receptacle for supplying ink t said absorbent member, means for pressing said endless belt and said first-named means while in Contact against said ink absorbent member, and means for removing the excess ink from said absorbent member before said endless belt is pressed into engagement therewith.

19. A machine for coating the edges of a shoe part comprising a support for said Work consisting of an endless multipore belt engaging one surface of the Work, an absorbent member adjacent to said multipore belt, means for supplying ink to said absorbent member, a second endless belt having a portion thereof parallel to the endless multipore belt, means for bringing said parallel portions of said belts together to enclose the Work, and means uniformly to press together a section of the parallel portions of said belts and said absorbent body.

20. A machine for coating the edges of a shoe part comprising an endless multipore belt engaging one surface of the Work, a felt ink roll over a portion of Which passes the multipore belt, a second endless belt having a portion parallel to a portion of the multipore belt engaging the opposite side of the Work, and means for pressing together a section of the parallel portions of the `belts against the peripheral surface of the felt ink roll thereby to force the inl: through the perforations of the multipore belt.

21. A machine for coating the edges of a shoe part comprising an endless multipore belt engaging one surface of the work, a felt ink roll over a portion of which passes the multipore belt, a second endless belt having a portion parallel to a portion of the multipore belt engaging the opposite side of the work, means for holding the parallel portions of said belts in engagement, and means for pressing a section of said parallel portions into engagement With the surface of the felt ink roll.

22. A machine for coating the edges of a shoe part comprising an endless multipore belt engaging one surface of the work, a felt ink roll over a portion of which passes the multipore belt, a

second endless belt having a portion parallel to the multipore belt engaging the oppositeside of the Work, guiderolls arranged to hold the parallel portions of said belts in engagement and to move them to feed the Work, and another roll, between the guide rolls which support the secT ond endless belt, operable to press a section of said parallel portions into `engagement with` the surface of the felt roll. l

23..A machine for coating the edges of a shoe part comprising an endless multipore belt adapted to engage one surface of the Work,.a felt ink roll over a portion of which passes the multipore belt, an `endless backing belt having a portion parallel to a portion of the multipore beltand engaging the opposite side of the Work, spaced rolls, at leasttwo of which are Within the endless backing belt, for supporting the parallel portions of the belts in engagement with each other, one of said inside supporting rolls engaging the backing belt at one side of the ink roll and another engaging said backing belt at the other side'- of the ink roll, and means for moving one of said supporting rolls relative to the ink roll to Wrap the belts around the surface of the ink roll.

24. A machine for coating the edges of a shoe part comprising an endless belt arranged to engage one surface of the Work, an endless multipore belt arranged to engage the opposite surface of the Work, means for supporting said multipore belt as a unit including means for applying ink to a portion thereof, said means being removable to disengage said belts, and means to hold said supporting means in operative position.

25. A machine for coating the edges of a shoe part comprising an endless backing belt arranged to engage one surface of the Work, an endless multipore belt arranged to engage the opposite surface of the Work, means for supporting said multipore belt and applying ink to a portion thereof, means for supporting and driving the backing belt, and a grooved idle roll movable against the backing belt to take up the slack therein.

26. A machine for coating the edges of a shoe part comprising an endless multipore belt engag ing one surface of the work, a felt ink roll over a portion of which passes the multipore belt, a second endless belt having a portion parallel to a portion of the multipore belt engaging the opposite side of the Work, means for holding the parallel portions of said belts in engagement, a roll arranged to engage the parallel portions of the belts between the means for holding said parallel portions in engagement, said roll being adapted to press a section of said parallel portion into engagement with the surface of the felt ink roll, and means adapted to move said roll to vary the pressure.

27. A machine for coating the edges of a shoe part comprising an endless multipore belt engaging one surface of the work, a felt ink roll over a portion of which passes the multipore belt, a second endless belt having a portion parallel to a portion of the multipore belt engaging the opposite side of the Work, means for holding the parallel portions of said belts in engagement, one of said last-named means comprising a roll arranged to engage a section of said parallel portions and to press it into engagement with the surface of the felt ink roll, and means to move said roll to vary the pressure.

28. A machine for coating the edges of a shoe part comprising an endless multipore belt engaging one surface of the Work, a felt ink roll overa portion of which passes the multiporelbelt, asecond endless belt 'havingarportion parallelzto a .portion of the multipore lbelt engaging :the 0pposite :side of "the work, .means for 'holding the parallel portions of'said belts in engagement,.one of said last-namedmeans comprising a..roll,.le versfor supporting said rollinengagement with a section of said parallel iportions, said levers being movable to cause said .rolltoipress-said sectionagainst'the.inkcarryinglroll .29...1A machine Fior -coating rtheyedges :of .a .shoe part comprising 1an endless 'fmultip'ore `belt engaging one .surface .of the lWork, 1a.*felt .inknoll over a portion of which passes Athe .'multi'pore belt, a second endless belt having. a portion-parallel to a portion of .thefmultiporebelt.engaging the Iopposite side fof the workmeans Ifor holding the parallelportions ofisaidibe'lts inengagement, one :vof said. .last-named: means Scomprising) a .rro'll,

means for fsupporting..said roll in .enga-'gement with :a: sectionfof.. said fportionsfisaid :meansbeing movable to icause .said roll :to .press :said rsecton against the ink-"carrying froll, fand .meansltoflock said last-named meansin 'a predetermined position.

30. :A kmachine for coatingtheiedges .of ashoe part .comprising an endless mltipore :belt'engagingone 'surface vof ,the work, a, felt inkfroll .overfa portion of which passes the multipore belt, a second endless belt having a portion parallel to a portion of the multipore belt engaging-theeopposite sidefof the work, means for holding-the parallel portions of said belt in engagement, one vof said last-named means comprising 'a roll, meansi for supporting said rollin engagement -with-a sec\ tion of said 'parallel portions, -saidfmeans ybeing movable to causel said roll to press Asaid'section against the ink-carrying ro11,'1oeking means to lock said last-named means in a predetermined position, and means for holding the locking means inoperative during the'positioning lofsaid roll.

ROUEL R. CAMPBEBL.'

l PatentV No. 2,5lp9,2}45.

CERTIFICATE OF CORRECTION.

May 25, 19ML. ROUEL R. CAMPBELL.

-It is herebr certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page l, second column, line 55, for "as it" read --is to; page 5, first column, line 57, for "absolute" read -absorbent-; page 6, first column, line 57, claim .and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

signed and .sealed this 8th day @f August, A. D. 19th.

Leslie Frazer (Sea-l) Acting; Commissione;` of Patents.

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