US2191225A - Paste applying apparatus - Google Patents

Description

Feb. 20, 1940. A. A. BEACH PASTE APPLYING APPARATUS Filed April 30, 1938 ATTORNEYS Patented Feb. 20, 1940 UNlTED STATES PATENT orrics PASTE APPLYING APPARATUS Almeron Allan Beach, Hobart, N. Y. Application April 30,1938, Serial No. 205,143

2 Claims.

This invention relates to paste applying machines, especially those designed for use by wall paper hangers in applying paste to wall paper. Although numerous attempts have been made i to design paste applying machines suitable for use by wall paper hangers, none of them has gone into general use. The reason for this, apparently, is that none of the prior art machines has saved much time in the preparation of the paper for hanging and furthermore none has been adaptable to meet the varying conditions presented by different kinds and weights of wall paper. The present invention aims, therefore, to provide a paste applying machine, especially adapted for use in applying paste to wall paper, which is so designed and constructed that the paper can readily be placed in position in the machine for the application of the paste to successive strips thereof of any desired length drawn directly from the roll and which, furthermore, is so designed and constructed that it will quickly apply, evenly and uniformly, paste of the amount and thickness required for the particular grade and weight of paper being hung.

An important feature of the invention is the arrangement of the parts which direct the paper over the paste applying roll and through the paste evening and gauging mechanism so that when a new roll of paper is to be placed in position in the paste applying machine it is unnecessary to thread the paper through any part of the apparatus, thereby providing a considerable saving of time in the preparation of the apparatus for use.

Another important feature of the invention is the provision of mechanism for insuring uniform distribution and at the same time determining the thickness of the layer or ridges of paste to be left upon the paper, which can readily be adjusted to vary the layer or ridge thickness to meet the conditions presented by the character and weight of the particular paper that is to be hun Another important feature of the invention is the provision of a ridge-forming or grooving device, which eifects a preliminary treatment of the paste after it has been applied by the paste applying roll to cause it to be formed in ridges, in combination with a scraper or doctor which can be brought into such different relations to the path of travel of the paper, as it leaves the ridgeforming device, that the height of the ridges can be varied by (cutting off more or less of the tops thereof, thus varying the. ultimate thickness of the layer or ridges of paste left upon the paper as it is pulled from the machine.

Other objects and important features of the invention will appear from the following description and claims, when considered in connection with the accompanying drawing, in which Figure Us a plan view of the machine, with a portion of the cover and of the guide rolls carried by the cover broken away to show more clearlythe parts beneath;

Figure 2 is an end elevation of the machine, with parts broken away showing the machine as it is prepared for carrying from one job to another;

Figure 3 is a side elevation of the machine,

with parts broken away to show theinterior construction and with the cover and the attached guiding rolls in open positionto illustrate the method of placing the paper from a new roll in position to be pulled through the machine by the paper hanger; f j t Figure 4 is a section on the line 4-4 of Figure 1;

Figure 5 is a front elevation, with parts broken away, of the paste-grooving or ridge-forming device and the associated scraper or doctor;

Figure 6 is a section on the line 66 of Figure 5 showing the method of adjusting the ridgeforming device and the associated scraper or doctor to produce the desired thickness of paste on the paper, the adjustment shown in Figure 6 being for a comparatively thin layer of paste;

Figure 7 is a section similar to Figure 6 showing the parts adjusted to provide a thicker coating of paste, the wing nut and the slot providing for the adjustment being superimposed in dotted lines upon this figure and also upon Figure 6 to illustrate the manner in which the adjusting means provides for the different adjusted positions and Figure 8 is a detail view showing the lock for holding the coverwith its attached guide rolls in closed or paper-guiding position.

In the illustrative embodiment of the invent-j tion, a sheet metal casing or container 2 ofa length suflicient to handle the ordinary widths of wall paper has a bottom provided with a well portion 4, preferably of a curvature concentric with the curvature of the paste-applying roll 6, and also provided with two inclined portions 8 and I0 sloping toward the well portion 4, the ends I2 and I4 of the casing preferably extending below the bottom of the casing to provide for level support of the casing when placed on a lower sides of the guide rolls B l and 36.

in Figure 2, a handle 22 being provided for carrying the casing in this position.

It will be noted that the integral cover part 20 extends into proximity to the roll 6. To avoid any exposed sharp edges, the edge of the integral cover part 20 adjacent to the roll 6 is preferably incurved as shown at 24.

A movable cover 26 is provided at one end 38 with hinge members 28 turning on a hinge pin 30 held in stationary hinge members 32 attached to the end l2 of the casing :2. The cover 26 is shaped to clear the roll 6, being curved in this part so that it is substantially concentric with the roll 6. Near its front the covertop is spaced 'sufiici'ently from the top edge of the casing 2 to provide for guide rolls 34 and 36 which have trunnions at their ends extending through the end walls 38 and Ml of the cover, as shown particularly in Figure 4. e

The rear edge of the top portion of the cover is curved upwardly at ti to provide a rounded hearing for the wall paper it coming from the roll 46. The rounded bearing d2 holdsthe wall paper down as it enters the space between the roll 8 and the cover '26 so that the paper will travel a considerable distance in contact with the roll it, the paper being held down on the other side of the roll by the guide roll 3d.

The'guide rolls 3t and 36 are spaced sui'nciently to permit the projection therebetween of the paste-distributing and gauging means, comprising the ridge-forming or pasterooving device it and its associated doctor or scraper 55) carried by the casing 2. The ridge-forming part of the paste-distributing and gauging means, as herein shown, comprises a strip of metal bent into U shape in cross section to form a bar extending across the casing 2 with the curved part of the U extending slightly above a plane tangent to the Slots 52 are cut through the curved bottom of the U of the'ridge-forming or grooving bar so that the paper-engaging side thereof presents a series of alternating slots and rounded teeth 54 which act after the manner of a comb to form alternating ridges and grooves in the paste 55 on the under side of the wall paper as the paper is drawn over the grooving or ridge-forming bar 48 after it has traveled over the paste-applying roll 6, thereby simulating to some extent the effect produced when paste is applied by abrush in the usual manner. The open or hollow construction of the comb bar id prevents clogging with paste and contributes to more uniform distribution of the paste. I

1 The slots 52 in the toothed bar 28 are preferably sufiic ently deep so that the bar 43 simply forms ridges in the paste regardless of its thickness. In order, however, to insure a uniform thickness of the paste on the underside of the paper and also to reduce thickness if too much paste has been applied by the roll, a doctor or scraper t provided, which has its upper edge spaced somewhat from the toothed bar it so as to provide for the convenient discharge back into the casing 2 and well t of any excess paste removed thereby.

Both the ridge forming bar 48 and the doctor 5t are connected at their ends to supports 58 and 60 mounted on trunnicns 62 and 64 extending axis of the trunnions 62 and 54 to bring the ridge former and doctor into different relations to the paper passing thereover or, in other words,- shown in Figures 6 and 7, so to tilt them with respect to the path of travel of the paper, as it passes between the guide rolls 3d and 36, that the doctor or scraper 5% will be spaced more or less from the under side of the paper in order to leavea greater or less thickness of paste upon the paper. The ridge former and associated doctor may be secured in their different adjusted relations to the paper passing thereover by a wing nut it screwed upon the end of the stud 66.

The roll of paper 56 may conveniently be supported upon the casing, in position for unwinding, by brackets F5 2 and 14 attached to the upper side of the integral cover portion 20, these brackets being provided with slots in which a rod it may rest after it has been threaded through the center of the paper roll.

he paste roll 6, for convenience in removal,

has one of its trunnicns F8 extended into a socket bearing 85) andits other trunnion 82 resting in an open bearing 8% and confined against movement up out of the bearing by the overhanging edge of a leaf spring 89 that can be pushed back against the side M of the casing when it is desiredto remove the roll ii for cleaning either the roll orthe casing itself.

From the foregoing description the operation of the device will readily be understood. When a new roll of paper is to be placedin position for applying paste to successive strips unwound therefrom, the rod 7E, which has a handpiece ll for convenient manipulation thereof, is threaded through the roll' 46 and is then placed in the slotsin the brackets 12 and "M. The cover Zacarrying the guide rolls 34 and 35, is swung into the position shown in Figure 3, a support 88 for the cover in this position being provided adjacent to the stationary hinge member A portion of the'paper is then unwound from the roll 46, drawn over the top of the roll 6 and over the top of the toothed bar or ridge former '48 and the doctor 59 and a sulncient distance beyond the front edge of the casing .2 to allow it to be gripped by the'paper hanger, and then the cover 26 is brought down into its closed position whichcausesthe rounded part 42 of the cover to press down on the paper behind the roll and causes the guide rolls t t and 35 to engage the paper on each side of the ridge former 48 and doctor 59 and bring the paper down into engagement with these two members.

The paper being now in position to have the paste! applied thereto, the paper hanger simply grips the portion thereof projecting beyond the front'edge of the casing in Figure 4 and draws through the machine the desired length to be applied and then cuts it off, this movement 'effooting a rotation of the roll 6 which app-lies paste to the under side of the paper, which paste is then groovedand ridged by the ridge former 48 and is then engaged by the doctor 50 to reduce it to the desired thickness and amount for the particular grade of paper being hung.

When the apparatus isto becarried from one job to another it is desirable, in order that the apparatus may be set down upon the flat side, to provide for the swinging of the brackets 12 and 14 into the position shown for the bracket 12 in Figure 2 of the drawing. To facilitate this,

these brackets are provided with open slots I02 adapted to receive the threaded studs I04 on which the winged clamping nuts I06 are screwed to clamp the brackets in their paper roll supporting position. In order to hold the brackets frictionally in the position shown in Figure 2 the other stud or rivet [08 on which the bracket turns into its inoperative position is provided with a friction washer H0 of any suitable friction material.

Among the practical advantages of this machine, it will be noted that it oflers very little resistance to the pull of the paper through the machine and therefore it can be used with all grades of paper, including even the thin'and cheap grades. Moreover, the thickness and uniformity of the coating of paste is in no Way affected by the speed at which the paper is pulled through the machine.

What is'claimed as new is:

1 A wall paper paste applying machine comprising a paste receptacle, a paste applying roll a mounted on said receptacle, arranged to dip into the paste therein andover which the paper travels to receive the paste, means upon'the two a predetermined arc of contact with said roll, means at one side of said roll for efiecting a predetermineddistribution of the paste coating on said paper and its reduction to a predetermined thickness, meansfor directing the wall paper into operative relation to said distributing provided at that side with a fixed cover portion to provide a paste-receiving compartment when the receptacle is turned through 90 for carrying from one job to another, means for confining the paper to a predetermined arc of contact with said roll and a movable cover for that part of the receptacle in which the roll is located,

said cover being hinged at one end of said re ceptacle and said confining means being mounted on said cover to swing therewith bodily into and out of confining relation to the paper.

ALMERON ALLAN BEACH.

sides of said roll for confining the paper to position of the receptacle and over which the paper travels to receive the paste, said receptacle extending to one side of saidroll and being- 0 x

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