US1704797A - Rotary paper-gumming machine - Google Patents

Description

March 12, 1929.

J. G. HUYE 1,704,797

ROTARY PAPER GUMMING MACHINE Filed June 24, 1926 3 Sheets-Sheet l March 12, 1929. HUYE 1,704,797

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Patented Mar.12, 1929.

UNITED STATES JOSEPH G. HUYE, OF NEW ORLEANS, LOUISIANA.

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Application filed 'J'une 24, 1926. Serial No. 118,248.

This invention relates to a machine for gumming or coating paper with adhesive, and I has particularly in view arts, such as covering of candy, millinery etc. boxes, where the paper as thus gummed or coated, is to be taken from the machine still damp, though seasoned, and applied directly to the articles on which it is to be used.

' The primary objects of this invention are: to provide -.a rotary gumming or adhesive coating machine; to provide sure'means for stripping the coated paper from the rotary gumming or coating means; to provide means for distributing the adhesive, such as paste or glue, evenly over the paster roll or means and so avoiding the creation of striations inthe. coating; and to provide a plurality of different size presser feet which may be combined in a great variety-of arrangements with the carrying means to provide the desired size composlte presser foot for use in gumming a particular size sheet of paper.

In the accompanying drawings, in which I have shown only the preferred form of my invention merely b way of illustration of the practice thereo as by law required, but with no intentionof being limited or restricted to said embodiment, it being recognized that the invention is capable of embodiment in a variety of forms:

Figure '1 represents atop plan view'of a machine embodying my invention;

Figure 2, a side elevation thereof;

Figure 3, a sectional view on the line 33 of Fig. 1; and I Figure 4:, a fragmentary detail view of the pastor and the superposed resser shaft, Presser-feet carrying discs, an the presser foot as built up to its extreme possible width, also indicating in dotted lines the outer carrying discs as moved toward the similar central carrier disc i to support the side portions of an extra wide presser foot section carried by said central carrier 4.

Referring now in detail to the drawings, the main machine frame, that part carrying all the shaft bearings, excepting those of .the spreader brush and the front conveyer roll, will preferably be of one integral cast piece, though this is not vital, and comprises two roughly triangular shape ends A connected as usual by integral bars orbeams C. The shafts 1', 3 and 5 respectively of the paste or glue supplying roll 2, the vpasterroll 6 and the carriers i are all mounted in suitable bearings in said ends A with their axes all parallel to eachother, the axes of said shafts 1 and 3 being relatively immov .able, all of the axes of said shafts being preferably arranged, as illustrated, in the same vertrcal plane, though this is not essential; and the shaft 5 being mounted in suitable manner, not shown, to be slidable in a vertical direction in slots or guideways, not shown, in said ends A and being forced-toward the shaft 3 by suitable compression springs, not shown, in the usual well known manner,-said shaft 5 being capable of being moved away from the shaft 3 sufliciently so that in case the operator misses a blank sheet to be gummed, or such sheet for any reason is not gripped by the rotary gumming elements, the presser foot carried by the carriers 4 on shaft 5 ma bemoved away from .the paster-roll 6 a su cient distance so as to be out of the path of travel thereof, say a sixty-fourth of an inch, and so will not be coated with adhesive.

A worker or squeegee roll 10 fixed on shaft 11 extends through enlarged or elongated open ngs in the ends A and is mounted in brackets 13 pivotally adjustable about bolts 14 respectively, and may be locked in adjusted position by bolts 15 turning into the respective ends A through slots 16 in said brackets, which may be provided with set screws 17 respectivel A drive wheel or fielt wheel E is keyed to the shaft 3 outside of said frame and is driven by a belt, not shown, driven by-a motor, not

. shown, or in any usual and suitable manner.

The, shaft 11 ofthe squeegee roll 10 has secured to its end portion adjacent to the gear 18 a gear 21 normally in mesh with said gear 18 to be driven thereby, so that the squeegee roll 10 and paste or glue supplying roll 2 will rotate in opposite directions. The squeegee roll 10 may be adjusted toward or from thepaste supplying roll 2 as the occasion therefor arises by means of operating the bolts 14 and 15 suitably and swinging the brackets 13 about the bolts 14; as required, as usual.

The glue or paste pot I is of usual construction, as illustrated in Figures 2 and 3, having the central portion of its upper end edges cut out so as to fit about the shaft 1.

To feed the blanks to the best advantage feed bar 32 extending across said work table J. So that the range of movement of the feed bar or kicker 32 and the time thereof may be fairly closely adjusted by means of the above construction in accordance with present known practice.

A carrier tray, preferably a cardboard sheet 7 secured to a wood strip 8 is adapted to be secured in centered position to the bar 32 and clamped against the same and exactly parallel thereto by any suitable clamps or equivalent means 9 of any known construction. Further, said tray is provided with a side guide wooden strip or piece 12 extending from, and at right angles to, strip 8 intermediate the ends of the latter. The operator lays the sheet to be gummed successively one at a time on said cardboard sheet 7 with the rear edge of each sheet in contact for its full length with wooden strip 8 and with its side edge in engagement with the strip 12 for the full length of the latter.

Of course the cardboard sheet 7 will be, as shown in Fig. 3, of appreciably less length than the sheet of paper a to be gummed, in

' order that the end of the latter may be shoved between, and gripped between, the presser foot 38 and the paster-roll 6 as the said sheet of paper a is carried forward to extreme forward position as above set forth.

The paster-roll 6 is provided with annular grooves preferably spaced at about two inch intervals for the full length of said roll 6 and preferably having sharp inner corners, andthe inner lateral portions of the stripper and conveyer rubber bands or belts 35 will be rounded off or cut away in order that the bands may readily seat themselves in their respective grooves and will have free running non-clinging engagement therewith.

The size and shape in crosssection of said stripper and conveyor bands is such that when fully seated in their respective grooves their outer faces will be flush with the face of said paster roll 6 to present a coiitinuous unbroken composite paster roll face so as to apply an unbroken coating of adhesive co-extensive with the presser-foot- 38 employed. 1

These stripper and conveyer bands 35 extend about the paster roll 6 and an idler 36 provided with similarly shaped and spaced annular grooves and carried in the beams 22, the length of said bands 35 being such that they are kept taut, or sufliciently so, to be positively driven, likean other driven'belt, by their engagement wit 1 the paster roll 6 and, being so close together, they will serve to strip the gummed paper from the paster-roll 6 as the bands-35 leave the same.

The arms 22, and consequently the length of the bands 35, illustrated in Fig. 2 as broken away and so of no definite or proportionate length, may 'be of any length desired to suit the number of operatives employed in removing the coated or gummed sheets in accordance with the speed of operation of the machine, or may be of such length in relation to the speed of operation of the machine that by the time the gummed paper reaches the roll 36 the moisture of the coating will have permeated or thoroughly dampened the paper or seasoned it so as to be in condition for immediate application to a box or other article, so that the length of the conveyer may vary from a foot or so up to forty or fifty feet or more as desired to meet the greatly varying conditions that may exist.

The grooved or slotted carrying discs or rolls 4 are adj ustably slidably keyed to their shaft 3, and each of them is provided with a central deep peripheral groove or slot adapted to receive the tails or stubs 37 of the presser members constituting singly or with others the presser foot 38, such a composite foot being illustrated in Fig. 1, and a differently arranged composite presser foot 38 being illustrated in Fig. 4, merely to demonstrate the adaptability of themachine to' various sizes of sheets to be coated, all of the individual presser members or elements 38 being all cut from the same stock and on the same are, their inner faces in each instance fitting snugly at all points against the opposed portion of the periphery of the disc 4 on which they are mounted, and the thickness of the feet 38 is such that, as illustrated in Figures 3 and 4, when mounted in the discs or carriers 4 and rotated therewith they will contact with paper sheets fed between them and the paster roll 6 and press said paper sheets against said roll 6 to coat the faces of the respective sheets a presented to the paster-roll 6 with paste or adhesive for the full area of the particular presser foot 38 employed, whether it be a single foot or a composite presser foot 38, as shown in either Figure 3 or 4.

Experience in coating paper with adhesive has demoust rated the fact that apparently too much glue or adhesive is picked up, or picked up unevenly, with the result that striations are formed, and also very definite ridges of paste or glue are formed about the edges of the coated area, so that in the further use of the paper the excess adhesive making up such ridges is liable to be forced out with damaging results to other material which may be pressed against the same.

The present invention has sought to cure this defect by providing means for wiping the Ill) excess adhesive from the plaster-roll 6 and to leave but a very thin uniform film thereon 4 as'the face thereof-passes a given point in its i the surface of'the paster-roll. 6 at the point of engagement thereof with the wiping means, and to this end I have provided in this embodiment a rotary wiping brush 40 mounted on a shaft 41 mounted in brackets 42 clamped by bolts 43 to the frame as illustrated in Fig. 3. and driven by belt 44 passing over pulleys on shafts 3 and 41 so that the adjacent portion of the brush or wiper 40 will be rotating downwardly in opposition to the upward rotary movement of the adjacent portion of the paster-roll 6.

The shaft 5 is slotted for its full length as at 45, as illustrated in Figures 1 and 3, and the carrier discs 4 are each provided with a binding locking screw 46 which normally seats in said slot to act as a key to prevent independent rotation between the shaft 5 and said carrier discs 4, and also binds in said slot in order that after said carriers have been adjusted to desired positions. they may be locked against movement endwise of said shaft by tightening up their respective binding locking screws 46.

The size of the presser foot 38 employed will vary. If a small sheet is to be gummed, say three inches long by two inches wide, a single presser foot element 38 of correspond .ing size will be mounted in the central car rier 4. If, however, a sheet say nine inches long by six inches wide is to be gummed, a composite presser foot 38 cmprising a plurality of presser elements all six inches wide and varying in peripheral length, say one one inch, one two inch, and two .three inch, may be employed, all mounted in the central carrier 4, as illustrated in Fig. 1.

If, however, a very wide sheet is to be wide long composite presser foot 38, as illustrated in Figure 4; or, where a. wide sheet is to be gunimed, but of such width that it may be accomplished by using the widest elements in a single peripheral series, the outer carrier discs 4 may be moved over to the dotted line position indicated in Fig. 4 so as to support the sides of said presser elements.

The presser foot 38, whether of a single element or built up will preferably be about one sixteenth of an inch shorter and narrower than the sheet to be gummed and will be, of course, centered therewith, so as to leaye a margin of about one thirty-second of an inch ungummed to avoid risk of squeezing paste upon the presser foot. Of course the margin mentioned is given merely as preferred and by way of illustration.

- The presserfoot 38 may be built up so as to be equal in width to the length of the paster-roll 6, and may be of such length in a peripheral direction as tobe almost a continuous circle, but cannot be quite continuous, a gap or break bein necessary in order that the timing of the feed may be regulated properly so as to maintain the exact registry required.

Each presser foot carrying element 4 is provided in one side, as illustrated in Fig. 3, with a plurality of laterally extending screwthreaded bores 47 to receive binding-screws 48 respectively to clamp against the ribs or tails 37 of the presser foot elements 38 to hold said elements correctly positioned in the respective elements 4', the plurality of bores permitting the use of a number of such elements 38 on each carrier element 4 and the location of the presser foot 38, whether a single presser element or a built up composite foot 38, at any point about the periphery of the elements 4 so that the timing mechanism will not need to be extensively adjusted at any time, though of course it will require to be adjusted some to obtain correct registry practically whenever a different length of sheet is to be gummed. I

From the above it is obvious that if the operator fails to correctly place a sheet or for any other reason a sheet fails to be gripped between the paster-roll 6 and presser foot 38, the presser foot 38. will come into direct contact with the paster-roll 6 and will be coated with paste therefrom. To enable the operator to avoid this, I apply bracket arms 49 to each end of shaft 5 and pivotally connect the lower ends thereof to a U-shape frame 51 having its free ends pivotally mounted by bolts 52 on the ends A of the frame considerably in front of the shaft 5 and below the same and having its bar extending across just beneath the rear end of the Work table J so that the operator, in the conditions mentioned, may'simply squeeze his hand together about the rear edge of the table J and frame 51, moving the bar of the latter toward table J and so raising the shaft 5 sufiiciently, say about one'sixty-fourth of an inch, away from shaft 3 so that presser foot 38 will not come into contact with paster roll 6.-

The ribs or tails 37 of each presser foot element 38 may be formed with grooves 52 in which the screws 48 engage.

The presser foot elements 38 and the pasterand will vary in length, in a peripheral direction, in each width size from say three to I twelve inches,increasing inlength by eighth inches up to four inches, and thereafter by inch increases. Of course the exact number of presser elements, Widths, lengths, variations in sizes etc. will be largely regulated by the needs of the field in which the particular machine is primarily to be used and by the preferences of the purchaser or operator.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

In combinatiompaste supplying means, a rotary paster-roll receiving paste from said means, a rotary resser-foot, means for feed ing blank sheets at regular intervals to be gripped between said paster-roll and said resser-foot, said paster-roll being formed with a plurality of annular grooves spaced at regular close intervals in an axial direction, and a plurality of endless bands respectively seating in and traveling about said pasterroll for stripping the gummed sheets therefrom as said roll rotates, said endless bands fitting in such grooves in such manner that their outer faces of the portions so fitting in said grobves before said bands begin to leave said roll will lie flush with the face of said roll to constitute in effect a continuation

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