US2014817A - Wall paper automatic paster and trimmer - Google Patents

Description

Sept, W, W35. T. J. SHIPMAN ZJEEM-fiil? WALL PAPER AUTOMATIC FASTER AND TRIMMER Filed Sept. 25, 1933 2 Sheets-Sheet 2 (Ittorneg .ZSnnentor Patented Sept. 17, 1935 UNHTED' STATES WALL PAPER AUTOMATIC FASTER AND TRIMMER Thomas J. Shipman, Kansas City, Mo., assignor of one-fourth to Benjamin E. Province, Kansas City, Mo.

Application September 25,1933, Serial No. 690,849

10 Claims. (Cl. 16436) This invention relates to machines for applying paste to wall papers of that class in which paste is applied to the paper as it is drawn from the roll, and my object is to produce a simple and efficient machine which not only applies the paste as the paper is drawn from the roll, but trims the paper at the side margins.

With the object in view of providing a machine capable of efficiently performing the dual function mentioned regardless of the diameter of the roll, and adjustable to accommodate Wall papers of different widths, the invention consists in certain novel and useful features of construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawings, in Which:-

Figure 1 is a side view of an appliance for trimming and coating wall paper with paste as the paper is unrolled.

Figure 2 is a fragmentary plan view of the appliance as depicted by Figure 1.

Figure 3 is a plan view with the top thrown back to permit of insertion of a paper roll and to initially dispose the web therefrom in operative relation to the various rolls and cutting knives of the appliance except certain rolls movable to and from operative position with the top.

Figure 4 is an enlarged vertical section on the line IV-IV of Figure 3, but with the top in operative position.

Figure 5 is an enlarged fragmentary section taken longitudinally of the combined guide and paper trimming roll.

Figure 6 is a section on the line VIVI of Figure 5.

Figure 7 is a detail top plan view of the adjustable knife-carrying header disclosed by Figure 6.

Figure 8 is an enlarged horizontal section of one of the cams for applying force to the clamping rods to secure the knives.

Figure 9 is a broken top plan View of one of the knife holders.

Figure 10 is an enlarged sectional perspective of a part of the device to disclose one of a set of parts for holding the scraper bars yieldingly elevated.

Figure 11 is a view to disclose a construction providing for automatic replenishment of paste to the paste trough.

In the said drawings, where like reference characters identify corresponding parts in all of the figures, l indicates the conventional paper hangers table and 2 a frame arranged and suitably supported against one end of the table, the top of the frame being substantially flush with the top of the table. The frame comprises side walls 3, a back wall 4, and a front wall 5, the latter being of lesser height than the other walls, to provide an opening 6. The said wall 5 forms in 5 conjunction with the side walls, a narrow bottom I and a wall 8 rising from the bottom, apaste trough supplied by pouring paste therein or through the medium of a float-controlled supply equipment, as hereinafter described. 10

Disposed within the trough and suitably journaled in the side walls, is a r0119, and externally of the frame the shaft of the roll carries a pulley It connected by a belt II, to a pulley I2 on a shaft member I3 of a guide and paper trimming 15, roll, said shaft being journaled in a bearing I4 secured externally to the adjacent side wall.

Alined with the rotary shaft member 53 and projecting toward the latter from the other side Wall of the frame, is a shaft member I5, which is 20 shown, as non-rotatable, but is slidably supported for convenience of assembly of associated and adiacent parts.

A pair of tubular headers I6 and H are secured respectively to the frame wall through which shaft member I3 extends, and to the non-rotatable shaft member I5, the header II being adjustable on shaft member I5, toward and from the other header. In the preferred construction, the paper guide and trimming roll is telescopic for the accommodation of wall papers of different widths, and as shown, comprises two sections I8 and I 9, the former having a slightly reduced portion 20 fitting more or less within section I9 under telescopic adjustment. Section I8 is secured at one end upon shaft member I 3 to turn the latter when the wall paper is pulled out, as hereinafter explained, the movement of the paper also turning section I9. The outer end of section I9 contains a ball-bearing, the inner race 2| of which fits tightly on a short tubular non-rotatable shaft 22 on shaft member I5. A collar 23 is secured to shaft 22 and abuts the inner side of ball race 2|, to effect telescopic extension of the roll by a pull applied on shaft 22.

The pair of non-rotatable headers I6 and H are disposed at opposite ends of the guide and trimming roll, the former, as hereinbefore stated, being secured to the frame wall through which shaft member I3 extends and abutting the outer end of roll section IS. The other header I'l, abuts the outer end of section I9, and is fitted on the tubular shaft 22, and secured upon the shaft member I5 by a set screw 24, which, when loosened, permits of adjustment of the header I! on said shaft member I5 to accommodate paper of the particular width to be used.

The roll 25 of wall paper is fitted loosely on a rod 26 underlying the said guide and trimming roll and resting in a pair of upwardly-facing hooks 2'! at the rear upper corners of a pair of segmental arms 28 of an angular rocker shaft 29 journaled at its ends in the side walls of the frame, one of the arms 28 being adjustable longitudinally of said shaft to accommodate the Width of the wall paper, the web of which extends rear- Wardly and upwardly around the said guide and trimming roll and then forwardly and under a guide and depressing roll, hereinafter identified.

The rocker shaft 29 is equipped at one end externally of the frame, with a handle or lever 33 to permit it to be turned against the resistance of a spring 3| which encircles the shaft and is secured at one end to the latter and at the other end to the frame by engagement with one of a series of holes 32 in the frame, this arrangement making provision for varying the force with which the spring presses the paper roll against the paper guide and trimming roll.

The paper guide and depressing roll 33, heretofore mentioned, is interposed between the paper guide and trimming and paste-applying rolls, and the web of paper is caused thereby to descend to a lower plane than the top of the paste-applying roll. The roll 33 for convenience is journaled in a pair of arms 34 depending normally within the frame from a hinged top 35 of the frame, the raising of the top removing the said roll to facilitate access to the paper web and to permit the latter to rise from the paste roll under the upward pressure of a tension rock-frame, consisting of a'bar 35 and a pair of rock-arms 31 within and pivoted to the side walls of the frame. The pivots or trunnions of the rock frame carry stop arms 38 for engagement with one or another of a seriesof fixed stops or studs 39, and coil springs 39a fit around the pivots (see Figure 10) and are secured at corresponding ends to the pivots and hooked at their other ends over the arms 31 and normally hold the bar 36 elevated against the underside of the paper web forward of the topmost point of the paste-applying roll, the chief function of the bar being to remove or scrape excess paste from the paper which the latter may receive on its wall side in passing over the pasteapplying roll.

The web, coated with paste, runs from the underlying bar to the underside of a guide roll 40 journaled in bearings M secured to the underside of the hinged top, said roll, when the top is in closed or operative position, occupying a position within the recess 6 of the frame. The web leads up around said roll and then directly rearward, paste side up, upon the hinged top and the table, the top having cross grooves Ma. as guides for effecting straight cuts for the strips of paper ready for applying to wall or ceiling.

It is of common occurrence to find rolls of wall paper with blank or unpatterned side marginal portions of unequal width, or with such portions of greater width than desirable. It is desirable that whatever the width of such portions, they should be uniform, and to make provision for trimming one or both margins concurrently with the drawing of paper from the roll, each header for the guide and trimming roll is equipped with a cutting knife 42. I have found that fragments of ordinary safety razor blades are efficient in action, and can be applied to the headers quickly, and that it is desirable that the blades slope for- Wardly and upwardly and project divergently forward relative to said guide and trimming roll.

To secure the trimming knives in place positioned as explained, each header is equipped with a knife-holding device, and means for clamping the same upon its knife. In the preferred construction each header has above its own axial bore, a straight bore 43 which extends diagonally from the inner end or face of the respective header to the peripheral face of the latter. A pin 44 fits such bore 43 and its inner end is flush with the said inner end of the header. Its outer end is flush with the peripheral face of the header and from said outer end the pin is bifurcated as at 44a, to considerable depth to provide a pair of jaws for receiving the respective knife so that the inner side of the latter shall parallel the adjacent side margin of the paper, the blade being inward of said margin to cut a strip therefrom of the predetermined width.

To hold the clamping pin firmly place, a clamping screw 45 extends through the pin and into the header, and to hold the knife firmly be tween the jaws of the bifurcated pin, aplunger pin 36 fitted in a bore 46a of the header, extends at right-angles to the pin and bears on one jaw of the latter near its outer end and fits at its other end in an eccentric groove of a rock-shaft A? fitted in the header radially thereof, the rockshaft having a handle 48 by which it is turned to advance the plunger pin against the clamp pin jaw for securing the knife firmly, or to turn the rock-shaft to permit the clamped jaw to react and effect retrograde movement of the plunger pin and remove the pressure from the blade when it is desired to replace the same by a sharper one.

To overlie the marginal edges of the wall paper and cause the strips severed therefrom to feed downward below the frame,.as waste, each header is provided with an arcuate guide 49 outward of the plane of the lines of cut to be made, the guides being spaced from the peripheral portions of the headers except at the outer ends thereof, at which ends the headers have peripheral lugs 49a to which the guides are secured. The guides tend to hold the paper down for dependable operation thereon of the knives and to direct the strips out from opposite ends of the web, toward the floor and thus avoid any chance of the strips bunching against roll 33 and interfering with the proper travel of the web, and, in this connection, attention is called to the fact that by inclining the forwardly-projecting knives outwardly they overhang the strips as the cuts are made and by cooperation with the guides 49 in holding said strips close to the header, the knives cut the paper cleanly and smoothly, the rearward convergence of the knives relative to the paper where the latter leaves the guide and trimming roll, giving them a draw out action and thereby avoiding any chance of tearing the paper. It has been found in practice, that with thin cheap paper, the use of knives disposed angularly with respect to the line of travel of the paper web where the latter moves forward from the guide and trimming roll, is imperative to dependably guard against tearing action. With paper of good quality the use of knives set as explained is desirable, but not invariably necessary,

On different rolls of the same pattern the mar- P ginal or unprinted portions may vary in width. To meet his condition it is desirable, where one knife is fixed, to shift the carrier endwise nearer to the side wall in proximity to the fixed knife if that unprinted margin of the paper is wider than the corresponding ma'rgin 'df the :preceding roll or in -the reverse direction if the unprinted marg'irrof the *new roll is narrower than that of the preceding roll. In other words, th'e'roll :of

paper is positioned to accommodate the fixed knife, and the adjustable header H is shifted to "with theend of the web from the roll upon the top of the frame, the operator grasps and pulls the web'to 'dispose -it to the required length upon the table, the web "receiving paste from the paste "roller and the knives trimming the web to the required width, the marginalstrips curling-downward between theheaders andiroll-33 to the floor beneath the frame and bearingno coating of paste because they do notcome in contact "with the paste roll. The web is cut as-explained, upon the top-of'the frame and the'severed portion may "then be folded and either applied to'the ceiling or wall, the cutting, folding and applying of the sections being in the-conventional manner.

"When the'paste supply is kept'up by pouring it into the trough by hand, an operator may occasionally let the supply-get solow than an unpasted length of web might be pulled out, and be either wastedor require coating by hand. Provision is therefore made, when desired for the use of equipment for replenishment of paste to maintain it at' the desired level in the trough.

To accomplish this, there may be a tank having a pipe 52 leading to the trough and equipped with a valve 5t operable by a float-controlled lever 54 within the trough. The fiow from the tank is preferably under pressure of air supplied to the tank above the paste level by a valvecontrolled tube 55 from a compressed air tank 56, both tanks being conveniently stationed on the floor below the appliance or otherwise stationed.

The operation of the appliance having been explained, it will be understood that to accommodate paper of greater or lesser width than the space between the two header ribs, the roll between headers must be of appropriate length. As shown, it can be lengthened or shortened, and one of the arms of the rocker shaft correspondingly adjusted on said shaft.

To vary the length of the said roll, the screw 24 is loosened. The related header is then slid on shaft l5, and if the header is fastened tothe sleeve shaft 22, the latter moves with the header and hence carries the roll member 9 with it. If the sleeve shaft is not rigidly secured to the header and it is desired to employ a wider paper than the roll is set for, the sleeve shaft, after the header is moved, can be grasped to pull the roll telescopically to greater length. The header is then refitted upon the sleeve shaftand the appliance is ready for operation with a roll of paper of appropriate width.

From the above description and the drawings, it will be apparent that I have produced an appliance having the features of advantage set forth as objectives in the statement of the objects of the invention, and that it is susceptible of modificar tion without departure from the principle of construction and mode of operation involved.

I claim:-

1. In an appliance of the character described, a revoluble roll, non-rotatable cylindrical headers at opposite ends of the roll, guides adjacent the headers to overlap and hold the side edges of a paper web adjacent the peripheral faces of the headers, and a knife adjacent the inner end -lap the marginsof the webas the latter passes 1 over the guide roll, and a stationary knife pro- -jection from thehea'der in the path of-travel'of of "a header "and bearing a fixed relation thereto, for trimming the web marginally near the adjacent -'end -of the 'web and parallel with the side 'margin thereof, said knife extending convergingly forwardwith respect/to the web and diagonally F 5 outward to intersect the web at "the lineof cut *and to overlie the marginal stripas the cut -oc curs.

2. In an appliance of the'character described, asupport for a rollofp'aper, a revolubleroll par- 10 alleling the paper roll and forming a guide for the web as drawn from the paper roll,-non-rotatable cylindrical headers atoppositeends'of said guide r011, guides adjacent the headers to overthe web for trimming a marginal strip from-the "latter, the knife extending angularly to overlie the marginalstrip adjacent the line of severance of the latter from the web.

'3; A'rotatable paper web guide roll, stationary cylindrical headers'atopp'ositeends of the guide roll andaxi'ally a'lined therewith and of substantia'lly the same diameteras the guide roll, means "on the headers for overlapping the 'marginal 'edges of the web of paper where it is in engagement with the-peripheral portions of the guide roll and headers to hold the marginal portions of the paper 'in close proximity to the headers, and stationary forwardly. diverging cutters projecting from the periphery of the headers and intercepting the path of travel of the web when the latter is caused to travel, to sever therefrom the portions lying outward of the vertical planes of the cutting edges of the knives.

4. In an appliance of the character described, a support for a roll of paper to be drawn off as a web, a guide roll over and upon which the web travels forwardly from the paper roll, cylindrical headers at opposite ends of the roll to be engaged by the side marginal portions of the web, and a pair of knives projecting divergently forward from the headers at the side thereof where the Web passes forwardly from the guide roll, the knives intersecting the web to sever therefrom the marginal portions lying outwardly of the planes of cut.

5. In an appliance of the character described,

a support for a roll of paper to be drawn off as a web, a guide roll over and upon which the web travels forwardly from the paper roll, cylindrical headers at opposite ends of the roll to be engaged by the side marginal portions of the web, and a pair of forwardly-diverging bifurcated holders secured to the headers, and thin knives clamped in the bifurcations of the holders and projecting forwardly from the peripheral portions of the headers.

6. In an appliance of the character described, a support for a roll of paper to be drawn off as a web, a guide roll over and upon which the web travels forwardly from the paper roll, cylindrical headers at opposite ends of the roll to be engaged by the side marginal portions of the web, a pair of forwardly-diverging bifurcated holders secured to the headers, thin knives clamped in the bifurcations of the holders and projecting forwardly from the peripheral portions of the headers, slide rods mounted in the headers, and cams for causing said rods to clamp the bifurcated portions of the holders upon the knives.

'7. In an appliance of the character described, a cylindrical header having a bore extending diagonally from the inner end to the peripheral 75 surface of the header, a holder fitted in the bore and bifurcated outward of the inner end of the header, means extending into the header at the inner end thereof and through the holder to secure the latter in place, a knife fitting in the bi furcation of the holder, a rod fitted slidably in the header and at one end engaging the holder at its bifurcated end, a cam rotatable in the header and engaging the other end of the rod, and means for turning the cam in one direction to cause the rod to clamp the holder upon the knife or in the reverse direction to effect unclamping of the holder relative to the knife.

8. In an appliance of the character described, a frame, a rotatable shaft extending through one side of the frame, a cylindrical header secured to and within the frame around the said shaft, a non-rotatable shaft alined with the first shaft and longitudinally adjustable in the opposite side of the frame, a tubular roll member journaled at one end on said header, a cylindrical header secured on said adjustable shaft, a tubular shaft on the adjustable shaft and projecting into the header on said last-named shaft and provided with an external collar spaced from the inner end of said last-named header, a roll member having a telescopic relation to the first-named roller member and abutting the last-named header, and a ball-bearing between said last-named roll member and the tubular shaft provided with the collar and located between the latter and the header on the adjustable shaft.

9. In apparatus of the character described, a guide roll for a travelling web of flexible material, a header at one end of and alined with the guide roll and forming a support for the adjacent side marginal portion of the web, a cut- 5 ter in fixed relation at one end to the header at a point in proximity to the face of the web which contacts with the roll and header, the cutter projecting outward from the header and intersecting the path of travel of the web as the same 10 travels away from the roll and header, and a web-guide projecting inwardly relative to the outer end of the header toward the outer side of the cutter and terminating adjacent the opposite face of the web from the header to restrain 15 the web from appreciable movement away from the header as the former is subjected to outward pressure upon encountering the cutter.

10. In. apparatus of the character described, a guide roll for a travelling web of flexible ma- 2O terial, a header at one end and alined with the guide roll and forming a support for the adjacent side marginal portion of the web, and a cutter in fixed relation at one end to the header at a point in proximity to the face of the web which 25 contacts with the roll and header, the cutter sloping outwardly relative to the line of cut to cause its free end to overlie the inner margin of the strip as the same is cut from the web by the cutter. 30

THOMAS J. SHIPMAN.

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