US2291691A

US2291691A - Pasting machine

Info

Publication number: US2291691A
Application number: US376815A
Authority: US
Inventors: Caufman Solomon
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-01-31
Filing date: 1941-01-31
Publication date: 1942-08-04
Anticipated expiration: 1959-08-04

Description

Aug. 4, 1942. s. CAUFMAN PASTING MACHINE 3 She'ets-Sheet 1 Filed Jan. 31, 1941 INVENTOR.

A H s- Solombn Caufman BY 55%.

g- 4, 1942- i s. CAUFMAN 2,291,691

PASTING MACHINE Filed Jan. 31, 1941' 3 Sheets-Sheet 2 INVENTOR. m Solomon Ca ufman S. CAUFMAN PA STING MACHINE Filed Jan. 31, 1941 3 Sheets-Sheet 3 iIIIIIIIIIIIIIII/l l llllllllllllll Q INVENTOR. Solomon C o. ufm an BY Q. "At? smoothly thereon,

Patented Aug. 4, 1942 UNITED S ATE s PATENT. OFFICE PASTING MACHINE Solomon Caufman, New York, N. Y.

1, 1941 Serial No. 376,815

Application January 3 6 Claims.

This invention relates to a machine for pasting textile fabrics and the like to a table top or other suitable surface preparatory to screen printing on the surface thereof.

An object of this invention is the provision of a simple mechanism by means of which the surface to which a textile fabric is to be cemented or pasted in preparation for the printing of designs thereon may be uniformly-covered with a thin layer of cement or paste evenly spread on A still furtherobject of the invention is the Figure 5 is a top plan view of a portion of the machine showing a modified form of cleaning device for removing the paste from the table Figure 6 is a right hand elevational view of this mechanism; and

Figure '7 is an end elevational view with some parts in section and some parts broken away of a modified form of pressure member.

In the printing of textile fabrics of various kinds, and especially in the screen printing thereof,'in accordance with this invention, suitable lengths of the fabric are cemented to a table top and the desired design is applied thereto by printing, preferably by the screen printing method. The cement or paste is approvision in the same machine of either a spray 7 device for applying the cement or paste to the surface, or a feed roller for the same purpose Another object of the invention is to provide in the same machine means for spreading the paste after it is applied to the tabletop and for removing the excess thereof just before the application of the textile fabric thereto.

plied to a table top,-which is surfaced with oilcloth, andthe fabric is then placed down on the cement or paste, all 'by the same machine.

By the prior practice these operations were carried out by hand and the fabric after being stretched and smoothed is fastened in place by pins. This is a slow, tedious time consuming and diflicult operation. The invention herein disclosed provides in a simple mechanism means for applying cement or paste to the oilcloth surface of the table top in the proper quantity and properly distributed, and then applying thereover the A still further object of the invention is the provision of means for supplying clean water to the table top after the printed fabric is stripped therefrom, and for thoroughly removing the paste therefrom in preparation for the next application of fabric thereto.

, Other and more detailed objects of the inven! tion will be apparent from the following description of one embodiment thereof when taken in connection with the attached drawings.

This invention resides substantially in the combination, construction, arrangement and relative location of parts as will be described in detail below.

In the accompanying drawings,

Figure 1 is a side elevational view of one embodiment of this invention;

Figure 2 is a top plan view thereof;

Figure 3 is an end elevational view of a portion of the machine showing a modified form of mechanism for applying paste to the table top to be used particularly with light weight fabrics such as rayons,-crepes, voiles, and the like;

Figure 4 is a cross-sectional view through this modified arrangement;

tration will now be set forth in full detail.

- fabric in a stretched smooth condition followed by the pressing of the fabric into intimate contact with the moist .cement or paste, and the drying thereof, all in a simple operation. After the fabric is printed it is stripped from the table surface, which when cleaned is ready for the next application of fabric thereto.

A description of an embodiment of the invention as herein disclosed for the purposes of illus- A table or support I suitable for the purpose is provided with a pair of rails 2 lying in parallel relation to each-other and to the table sides as clearly shown in Figure 2. The area of the table top between the rails is surfaced in any suitable manner asby means of a layer of oilcloth 3, as is commonly used in this art. A carriage is longitudinally moved on these rails and consists of a pair of suitably shaped side frame members 4 cross connected by rods 5 uniting them into a self-supporting movable carriage. The carriage is provided at ltscorners with suitable flanged wheels 6 rotatably mounted thereon and positioned to engage the rails 2 to permit ready transportof the carriage longitudinally of the rails. Movement of the carriage over the rails is caused by means of a hand crank- 54 which is connected to a gear It iournaled on one side frame members 4 and meshing with another gear 52 secured to. the axle to which the wheels 6 at the adjacent end of the carriage are mounted. Thus, by turning the crank 64 the carriage and all parts mounted thereon may be caused it move back and forth on the rails.

On the upper part of the carriage is journaled a shaft -'I on which a roll 8 of the fabric vto be trcatedmaybe mounted so that the fabric may be readily unreeled from the roll. The fabric extends from the lower surface of the roll as shown in Figure 1, to and around a drum or roller 9 v mounted upon a shaft I Journaled in bearings at one end of the carriage as shown. Mounted on the shaft It is a double ended lever ll having one arm bifurcated, which together with the tightening bolt l2 acts as a clamp to vary the resistance to rotation of the roller 9. arm of lever ll engages a stop It on the carriage. With this arrangement it will be seen that the resistance to rotation of the roller 9 can be varied extends from the roll 8 to a freely rotatable expansion roll I journaled on the carriage, and

"after passing therearound extends down to the "suri'acfe' of the table I. The surface ofthe expansion roll II, in accordance with well known practice in this art, is provided with a suitable design of a nature which tends to expand and stretch the goods axially thereof while it engages therewith. In the case of-heavy fabricsa stationary expanding device may be employed having a suitably configurated surface to cause the transverse stretching of the goods as it. moves thereover. This is likewise in accordance with knowledge in this art. I

A heated pressure drum I is Journaled on the carriage as shown by means of a shaft 11, which is rotatably mounted in journal blocks l8 slidably' mounted for vertical movement in the carriage The other of the blade 36 is covered with a rubber facing ll. 1 cam 33 secured to the shaft 22 cooperates wit! the cam operator 34 connected to the hand level 35 pivotally mounted on the bracket 30. B3 clockwise rotation of the hand lever 36 the doctoi blade 36 may be raised out of engagement with the table top. As is illustrated in the drawings the doctor blade supporting clamps are preferably. made relatively massive so that the weight thereof, will act to force the doctor blades into contact with the: table surfa'c'e under the necessary pressure. If desired these clamps may be constructed to receive weights, not shown, or suitable springs, not shown, may be supplied to accomplish the same object with more flexibili y. Mounted on the carriage atsome suitable point, as for example at the end as indicated in it into two compartments. For the Figure .1, is a container 38 having a removable cover I! and a transverse partition 40 dividing sake of description it will be assumed that the left hand by tightening or loosening the bolt I 2. The fabric compartment, Figure 1, is to contain clean water and the right hand compartment the paste or cement. The right hand compartment is provided with a discharge connection 4| having a valve 42 therein, which connection extends to the frame.- A spring I9 is interposed between the journal block is and the frame, and ascrew 20 engages the top'of the journal block so that the vertical position of the drum I! may be adjusted. The bearing construction for this drum at the other side of the carriage is the same as that shown in Figure l-and Just described. The surroller I5 is in reality a closed drum that may be heated in any one of a number of suitable ways well known'in this and related arts. The means for heatingthe roller isv not disclosed since it is unnecessary to an understanding of the invention. The drum may be heated by steam, hot

a with a replaceable felt facing 29. Mounted on the shaft 23 is a cam 24 which engages with a cam operator 25 connected to a pivotally mounted hand lever 26. By operating the hand lever 26 in a clockwise direction the doctor blade 2! may be moved to disengage its felt covered edge from the table top.

A similar bracket 30 is mounted on each side of the frame of the carriage and Journaled therein on a shaft 32 is another doctor cla'mp 3| in which the doctor blade 38 is secured by means of the set screws 31. The lower edge of the doctor intake port of a suitable pump. This pump has a drive pulley which is connected by a belt 48 to'the pulley M ore. suitable driving motor 41, illustrated as an electric motor. The output part of the pump is connected by a pipe 48 to a spray head 49, which is in the form-of a long tube extending-across the machine and mounted on the side frames as shown in the figures. The lower wall of the spray head 49 is provided with suitable openings either in the form of a long narrow slit, or a plurality of small holes so that when the fluid cement or paste is supplied thereto under pressure it will spray it onto the oilcloth surface 3 of the table throughout the'width thereof in suitable quantities. When the carriage is caused to traverse the table,

. say from left to right, and with the spray in face It of the drum I5 is preferablycovered with Y or made of a suitable metal such as copper. The

operation, the entire oilcloth surface is covered with a layer of, cement or paste in suitable quantities. During these operations the valve 42 is opened. To complete the structural description it will be noted that the left hand-compartment is connected by a pipe 50 to the intake of the pump 43 and'ris provided with a valve 5| which would be closed during the pasting operation. During the cleaning operation to be described later, valve 5| is opened, and valve is closed, so that fresh water may be sprayed onto the oilcloth surface.

In the printing of light weight fabrics such as rayons, crepes, voiles, and the like, it is preferable not to use the spraying apparatus for pasting the oilcloth surface. For the preparation of these fabrics for printing a different mechanism is provided for applying the paste. This is shown as comprising a smooth roller 55 Journaled in the carriage so that the surface thereof will engage the oilcloth surface and be caused to revolve when the carriageis moved along the rails. The roller 55 engages a similar roller 51 which is rotatably mounted and which in turn engages a similar roller 58. The roller 58 is supported so er 59. The thin layer of paste which passes by the scraper istransferred to the roller 51 and by it to the surface of the roller .55. The roller 55 applies this pasting material in a thin layer over the entire width of the oilcloth surface. It will be noted that for the sake of ease in operation the bracket 56 and all the parts connected thereto, including the

rollers

55, 51 and 58 and the container 59, may be mounted on the carriage in any number of obvious ways in order to'raise the roller '55 out of contact with the oilcloth surface 3 when this part .of the mechanism is not being used. Such raising mechanism is not disclosed since many ways of accomplishing this will be apparent to a skilled mechanic.

The operation of the machine will be more or less apparent from the above description, but a brief repetition thereof seems desirable. It will be assumed that the oilcloth surface 3 is clean.

In order to paste a particular fabric thereon the end thereof is passed from the supply reel 8 around the tension roller 9, the expansion roller It, and from there down to the oilcloth surface. The carriage is caused to move from left to right with the spray head 49 in operation a suflicient distance so that the heated pressure roller I is adjacent the beginning of the pasted area. In.

moving the carriage to this point the covered doctor 35' being in its lower position will operate to insure a uniform distribution of the paste over the oilcloth surface and the felted doctor 21 following the action of the rubber covered doctor 38 will act to remove any excess paste. The result is that at the point of application of the end of the fabric strip to the table top there is a thin uniformly distributed layer of paste in just the right quantity. The terminal end of the fabric is placed inengagement with the pasted surface in proper position, and the carriage is then again moved to the right by means of the crank 54, so that the heated pressure roller 15,

passes over the adjacent end of the fabric and from then on rolls the fabric under pressure and the proper tension into intimate contact with the pasted surface. The roller being heated, the paste is quickly dried. The pressure of the roller l5 on the surface can be adjusted by means of the screws 20 so that at the tail end of the travel of the carriage to the right the working surface of the table will have pasted thereto in a smooth layer fabric about to be printed. The paste will have been dried by the heated pressure roller, and the fabric surface will be smooth andtaut, that is it will be in the proper condition for further treatment such as screenprinting.

The action of the tension roller .9 is such as to keep the fabric which is delivered therefrom tothe table surface under the desired tension. This tension may be adjusted by varying the gripping action of the lever l I on the end of the shaft It. At the end of the travel of the carriage the fabric is cut off and the carriage moved out of the way. After the fabric is printed it is stripped from the oilcloth surface in the usual manner. The carriage then moves back to the beginning of its travel at the left, the paste supply of course having been cut off by stopping the pump and closing valve 42. The doctor blades are removed and in place thereof a rubber covered doctor blade is mounted in the holder 22 and a sponge covered rubber blade is mounted in the holder 3|. When these doctor blades contact with the table top and the valve 5| opens the carriage may be removed to the right, and with pump 43 running clean water will be sprayed on the previously pasmd surface. The sponge of the leading doctor will serve to wipe the surface and absorb much of the water with the dissolved paste. The trailing rubber covered doctor will squeegee the surface, removing any remaining moisture. The table is then ready for repasting for reuse as before.

In the treatment of lighter weight materials where it is desirable to use less cement orpaste. the drum paste applier is used. In this case the spray head 45 is not used. The drum paster is moveddown so that the roller 55 contacts the oilcloth surfacev with a suitable cement or paste in the container 55 when the carriage is moved from left to right. The drum pasting equipment.

as previously described, will apply a thin 'uniform layer of paste to the oilcloth surface. The

doctor blades 21 and can be used, if desired,

to further insure spreading of the paste or cement and the removal of excess thereof. However. they may be raised out of contact with the table surface, and not used in this case. The lighter fabric is mounted on the shaft 1 and supplied as previously described. The heated pressure roller I5 is, of course, used to roll the "fabric onto the pasted surface and dry the paste as before.

A modified form of pasting arrangement equivalent to that including the roll 55 andassociated equipment is illustrated in Figures 3 and 4. In other words, the mechanism of Figures 3 and 4 may be employed when for any reason it is not desirable to use the spray paster. these figures, removable brackets 55 are mounted on the frames 4. 'Journaled in these brackets is a roll 55 having a. smooth surface or finely engraved so as to apply the paste uniformly to the oilcloth surface 3. A tank 59' for the paste of suitable form and co-extensive axially with the roll 55' is also mounted on the brackets 55. The bottom of this tank is bent and is of proper shape so as to fit snugly against the periphery of the drum 55. This arrangement is particularly useful where the pastes are not too thin and are of a consistency so that there is little tendency for it to leak out of the container. A pivotally mounted doctor blade or scraper 50 is held in engagement with the roll 55' by means of a spring 6| so as to scrape off the excess paste before it reaches the oilcloth surface 3. As will be apparent, the roll 55' rotates in a counterclockwise direction so that its pasted surface is first scraped before it contacts the surface 3. A suitable recepi tacle 52 is provided to collect the excess paste or.

cement scraped from the roll 55'. In cases where mechanism of this type is preferred, it may be easily substituted in the machine of Figure 1 by removing the brackets 56 and associated parts. The mechanism of Figures 3 and 4 is preferably used when pasting heavier fabrics to the table top, in which case the multiple roller type of poster; is not necessary.

Figure 5 illustrates a wiping or cleaning roller which likewise may be substituted in the machine for the roll pasting mechanism after the oilcloth surface 'has been pasted a number of times, and therefore needs a thorough cleaning. This roll or drum is illustrated at 55 and is shown provided with a plurality of spirally shaped wiping blades 66 composed of strips of suitable material such as sponge, rubber and the like. One of the detachable supporting brackets for the roll 55 is provided as shown with an expansion arm 69 on which is freely mounted the rotatable idler gear 68. This meshes with a similar gear 51 secured As shown in 1 drum}! are caused to revolve against the direc-' tion of movement of the carriage and at a sumto the sm'face'to ciently relatively rapid rate so that the wiper blades 86 scrub and clean the oilcloth surface 3. Thus this device aided by the doctor blades as previously described, will serve to thoroughly clean ine oilcloth surface. -By this time, of course, thespray head ll sprays clean water onto the oilcloth surface. a r

In passing it may be noted that in the handling of some goods the paste is of such consistency that it is not necessary to spray it. In this case the motor driven pump may be dispensed with, or the pump may be by-pas'sed so that the paste may be allowed to flow by gravity to the spreader or spray head ll, which in this case might be modified so that its apertures will permit the right amount gravity. V v

In place of the heated pressure roller I! there may be mounted on the carriage 4 a heated ironing member I! of sufficient weight for pressing the fabriconto the pasted table top I. The iron 'is preferably provided with a pointed nose I5- quite similar to other well known forms of pressingirons. The iron is heated in any suitable manner, as for example as illustrated by means of electrical heating coils enclosed therein and provided with the current supply leads L. There is not shown, but it will be apparent to those skilled in the art, that different types of construction may be employed for adapting'the iron for mounting in the carriage 4, including, as illustrated in the case of the roller 15, means for varying the pressure of the iron on the fabric as it presses the fabric onto the pasted table top. Transversely of the machine the iron will, of

of paste to flow therethrough by ing the paste on andremoving the excess thereof from the surface to be pasted.

2. In a machine for applying a web to a pasted surface. the combination including'a movable carriage, a heated pressure roller mounted on said carriage, means for'supplyinga vweb under tension to the pre sure roller, spray means mounted on the carriage forsupp ing a paste which the web is to .be pflsted in advance of the heated pressure roller in thedirection of movement of the carriage, and means for spreading the paste on and removing the excess thereof from the surface to be pasted.

3. In a machine for applying a web to apasted surface, the .combinationfincludlng a movable carriage, a heated pressure roller mounted on. said carriage, means for supplying a web under tension to the pressure roller, roller, means mounted on the carriage for supp ng a paste to the surface to which the web is to be pasted in advance of the heated pressure roller in the direction of movement of the carriage, and means for spreading the pasteon'and removing the excess thereof from the surface to be pasted;

4. In a mechanism of the typedescribed, the combination including a surface to which a fabric web is to be pasted, a carriage longitudinally movable with respect to said surface, a heated pressure roller mounted on said carriage so as to engage said surface, means for supplying a web under tension between the surface and said pressure roller, means for applying a uniform layer of paste to the surface in advance of said pressure roller in the direction of movement of the carriage, and a pair of positionable doctor blades mounted on the carriage having means for moving the doctor blades into and out of engagement with said surface.

course, extend a suihcient distance so as to be at least as wide as the fabric to be pasted down.

From the above description it willbe apparent tothose skilled in the art that the single embodiment of the invention herein disclosed for the purpose of illustrating the principles of this invention may be varied in many obvious ways without departing from the novel scope of the subject matter herein disclosed. I do not, therefore. desire to be limited to the disclosure as given for purposes of illustration, but rather to the scope of the claims granted me.

What is claimed is: 1. In a machine for applying a web to a pasted 7 surface, the combination including a movable 5. In a machine of the type described the combination including a surface to which a .fabric'is to be pasted, a carriage mounted formovement longitudinally of said surface, a pressureroller mounted on said carriage so as to engage said surface, means mounted on said carriage for s pplying a web under tension to said surface between it and said pressure roller, means mounted on said carriage in advance of said the combination including a supporting means v to provide a surface to be pasted, a carriage supported for guided movement longitudinally of said support, a heated pressure roller mounted on said carriage so as to engage said surface with pressure, means for supplying a web under tension between the pressure roller and said surface, means for applying past to the entire surface of said supporting means in advance of said pressure roller and means for removing the excess thereof from the surface to be pasted.

SOLOMON CAUFMAN.