US2557723A

US2557723A - Sheet assembly method

Info

Publication number: US2557723A
Application number: US684315A
Authority: US
Inventors: Carl W Brenn
Original assignee: AUTOGRAPHIC REGISTER CO
Current assignee: AUTOGRAPHIC REGISTER Co
Priority date: 1946-07-17
Filing date: 1946-07-17
Publication date: 1951-06-19
Anticipated expiration: 1968-06-19

Description

June 19, 1951 'c. w. BRENN SHEET ASSEMBLY METHOD 2 Sheets-Sheet 1 Filed July 17, 1946 INVENTOR. Car-Z W Brawn BY W M ML W ATTORAIE'YS' June 19, 1951 c, w NN SHEET ASSEMBLY METHOD 2 Sheets-Sheet 2 Filed July 17, 1946 INVENTOR. I Carl W 5]"67172 BY @g Adah-M4 M A TTORNEKS' Patented June 19, 1951 SHEET ASSEMBLY METHOD Carl W. Brenn, Montclair, N. J., assignor to Autographic Register Company,

Hoboken, N. J., a

corporation of New Jersey Application July 17, 1946, Serial No. 684,315

8 Claims.

This invention relates to improvements in the manufacture of sheet assemblies made up of a plurality of sheets secured together in overlapping shingled relation.

Such assemblies or books are useful when it is desired to provide for simultaneous inscription of correlated or similar legends as a heading on the exposed surface portions of a plurality of sheets while the sheets are joined in an assembly, said sheets being readily separated from each other .for inscription with other data on the remaining surface of the sheets.

It has been proposed heretofore to make such assemblies from a plurality of continuous webs or strips by supporting and guiding the strips in spaced relation such that the strips can be brought together in transversely overlapping relation, i. e. with a marginal portion of each web exposed toward one surface of the assembly, progressively applying spots of adhesive at form width intervals along the webs as they are advanced so that when the webs are brought together, the spots of adhesive will be aligned transversely of the assembly, bringing the Webs together in the desired relation, and shearing the resulting assembly transversely at form width intervals adjacent the transversely aligned spots of adhesive, to form a series of shingled forms. In carrying out the procedure heretofore proposed, relatively complicated and expensive apparatus is required to insure guiding the individual strips into the desired overlapping relation, and to apply the spots of adhesive at such intervals that the spots on the various strips will be transversely aligned when the strips are collated. Such apparatus is further complicated by the necessity of correlating operation of the adhesiveapplying mechanism with the operation of the shearing mechanism, so that the spots of adhesive will be located in the desired portion of the severed forms.

It is an object of this invention to provide a method for manufacturing shingled record sheet assemblies of the aforesaid type, wherein the adhesive can be applied to the strips at any time prior to collation thereof, thereby avoiding the difficulty encountered when attempting to apply adhesive in the collating machine. It is also 'an object to provide for simultaneously advancing the strips and for aligning the strips in the desired overlapping relation, while at the same time insuring transverse alignment of the adhesive previously applied to the strips.

A further object is to produce assemblies of the af r said ype wh rein the omponent sheets shingled relation on a collating firmly held against displacement during inscription of the exposed margins thereof. I

In a preferred embodiment of my invention, a plurality of continuous strips of stationery are provided having feeding and aligning pin-engaging apertures formed therein at sheet-width intervals, preferably in transverse rows, so that when the strips are brought together with their lateral margins in overlapping shingled relation, corresponding to the relation desired in the finished assemblies, apertures of the respective strips will be brought into mutual registration. Moreover, the strips are provided at sheet-width intervals, preferably adjacent the aforesaid apertures, with spots of an adhesive in inactive condition, said spots being formed on a strip surface in contact with an adjacent strip but preferably not on any surface which is exposed in the overlapped assembly, and said spots of adhesive being brought into alignment transversely of the assembled strips when the apertures therein are brought into mutual registration. The several strips prepared in the aforesaid manner are withdrawn, for example, from a series of spools, and superposed in the desired transversely overlapping table. A set of apertures in each of the respective strips is brought into registration by engagement thereof with a transverse set of aligning pins movable with the strips as they advance across the table.

These pins progressively engage and disengage successive sets of apertures during the stripfeeding operation, and positively align the strips longitudinally and transversely in the desired relation. The pins can also constitute the means for advancing the strips. In such collated and aligned position the adhesive on the strips is activated and the superposed strips are pressed together to bond them together at sheet-width intervals. The resulting assembly is advanced toward a severing device preferably a shearing knife, at which the shingled strips held together by the adhesive are severed into assemblies or books. The shearing knife is preferably arranged so that it severs the assembled strips through the transversely disposed spots of adhesive, so that a portion of the adhesive between each pair of strips remains on each side of the line of 'severance. In this way, the sheets composing the resulting assemblies are secured to adjacent sheets by spots of adhesive at both lateral margins of the resulting sheet assembly, thus holding the sheets against casual displacement during feeding or inscription of the assembly, e. g. in a business machine.

Coordination of operation of the aligning and pin-feeding mechanism with operation of the adhesive-activating means, and with operation of the shearing mechanism can be readily arranged. If desired, the strips can be preformed from one or more relatively wider Webs of stationery, .such webs being printed with any desired form matter and adhesive applied thereto at sheet-width intervals transversely of the entire web, whereupon the latter is slit lengthwise into strips of desired width. Similarly, perforations can be formed in such webs, before th y are slit, at the required sheet-width transverse spacing required for registration thereof in the assembly of the resulting strips in the,

desired shingled relation.

Preferably the adhesive employed is thermoplastic, and the strips are secured together merely by applying heat and pressure thereto, at the adhesive-bearing portions thereof, after they have been brought together and aligned on the collating table by engagement ofthe apertures therein with the feeding and aligning pins.

My invention will be more fully understood in the light of the following description of a preferred embodiment thereof, taken in connection with the accompanying drawings, wherein:

Figure 1 is a perspective view of a shingled form or book prepared in accordance with my invention.

Fig. 2 is a rear elevation of a section of continuous strip stationery employed in making a shingled form of the type shown in Fig. '1.

Fig. 3 is a perspective view of an apparatus for making the shingled forms.

Fig. 4 is a diagrammatic view of the manner in which strips are collated in the apparatus shown in Fig. 3.

Referring to the drawings, a shingled assembly l made in accordance with my invention, comprises a plurality of sheets I I which may be provided with preprinted form matter l2 on a surface thereof, said sheets being arranged in shingled relation with their upper edges l3 offset one from the other so as to expose a marginal portion ll of each of the underlying sheets, the lateral edges I5 of the sheets being aligned at the lateral edges of the assembly. The sheets II are held together by areas of adhesive I6 extending a short distance inward from the lateral edges of the assembly. Adjacent one of its lateral margins, the assembly lfl is provided with a series of apertures 11, which can be spaced, if desired, for

engagement of feeding or positioning devices on a business machine.

According to my invention, the assembly lOis made from a plurality of continuous strips 18, illustrated in Fig. 2, having therein at sheet-width intervals, transverse rows of apertures 19, and likewise transverse series ofadhesive-coated areas 20, the areas of adhesive being preferably located adjacent the transverse rows of apertures 19. The adhesive-coated areas preferably extend a .short distance longitudinally of the strips across the line along which said strips are to .be severed so as to yield a shingled assembly as shown in .Fig. 1, so that the component strips will be fastened together by the adhesive at both sides of the assembly. For this purpose the adhesivecoated areas are advantageously formed by short stripes extending longitudinally of the strips IS.

The strips l8 can be be formed by longitudinally slitting a relatively wide web of stationery,

intervals and having the l preprinted with the form matter IZ for several strips, and having the transverse rows of apertures l9 and adhesive-coated areas 20 formed therein before cutting the web into longitudinal strips. The adhesive employed in forming the spots 20 is normally inactive, so that the strips can be formed into spools to serve as a source of supply iii-collating the strips in shingled or overlapping relation.

Since adhesive is required only on surfaces of the overlapped strips which are in contact with adjacent strip surfaces in order to bond the superposed strips together, and since the adhesive, if deposited on exposed surfaces of the overlapped strips, often proves objectionable in that it may cause the strips to stick to surrounding objects during the assembling and bonding operation, the exposed surfaces of the assembly of strips have no adhesive thereon. For example, strips l8 as illustrated are provided with adhesive spots 20 only on their rear surface, while the lowermost strip l8a which is assembled therewith, and which is otherwise similar to strips I8, has no adhesive thereon. However, if desired, the intermediate strips may have adhesive spots on both surfaces, and the topmost and lowermost strips may be devoid of adhesive or can have such spots on their rear and front surfaces, respectively, without having adhesive on any part of the exposed surfaces of the strips when assembled in overlapping relation.

In manufacturing the assemblies II), the strips l8 are drawn from a source of supply such as a series of spools 2i, transversely spaced so as to position the strips approximately in the desired shingled overlapping relation. The lowermost strip 58a, while similar to the other strips IS in other respects, is, as stated above, made without adhesive on its rear surface. Strips l8 and [8a are threaded over a plurality of guide bars 22 and then brought together under a roller 23 on the upper surface of a collating table 24.

The strips are advanced across the collating table, and aligned transversely in the desired overlapping relation, as well as longitudinally to bring successive sheet-widths of the severed strips into registration, by bringing apertures of successive sets in the strips into mutual registration. For this purpose, a pin-feeding and aligning device is provided on the collating table 24 beyond the roller 23, comprising a carriage 25 having thereon a row of pins 26 extending transversely across the table, said carriage being movable at right angles to the plane of the table to move the pins between strip-engaging and stripreleasing position, and also movable longitudinally of the table during the strip-feeding operation. Strips l8 and [8a are drawn forward under the roller 23 across the table 24 until a transverse series of apertures [8 in each of the strips is positioned to engage pins 26 of the pin-feeding and aligning device, the strips being arranged in the desired shingled overlapping relation. The pinfeeding device is moved to strip-engaging position, and apertures of one set in each of the respective strips are impaled upon the pins 26, engagement of the apertures with the pins aligning the strips transversely in the desired shingled relation, and aligning the successive sets of apertures as well as the spots of the adhesive on the several strips longitudinally of the strips.

Operation of the strip-feeding device involves reciprocating movement of the carriage 25 lengthwise of the table in an aperture 21, the carriage being raised and lowered at thebe inning and end of its stroke in strip-feeding direction, to move the pins to strip-engaging and then to strip-releasing position. Thus, pins 26 are projected into a strip-engaging position at the beginning of the forward stroke and after the carriage 25 has moved forward a distance equal to a sheet-width (i. e. the distance between a pair of transverse series of pin-engaging apertures in the strips I B or Illa), the carriage and pins are retracted to strip-releasing position. The pins projecting through apertures l9 during the forward stroke move the collated strips forward across the table, a distance equal to a sheet-width, while maintaining the strips in the desired overlapping position, and in the desired transverse and longitudinal alignment. When the carriage 25 reaches the end of its forward stroke, it is lowered to disengage the pins 26 from the strips [8 and 18a, on the table, and is then moved rearwardly to its initial position for engagement with the next transverse series of apertures I9 in the strips [3 and HM. The carriage 25 is thereupon raised so that the pins 26 engage the next transverse series of apertures l9 and the strip-advancing and aligning operation is repeated.

Means is provided in accordance with the in vention for securing the strips together, said means comprising in the embodiment illustrated in the drawings, a presser device 28 adapted to engage the assembled strips along the transversely aligned spots of adhesive at successive sheet-width intervals as the strips are advanced. The presserdevice 28 is advantageously located beyond the pins 26 and carriage 25, so as to engage the strips IB and 18a after they have been positively aligned longitudinally and transversely by engagement with pins 26. When a thermoplastic adhesive is used, the presser device 28 comprises a pair of heating elements 29 and as between which the collated strips pass, and adapted to be clamped against the strips so as to heat the adhesive, thereby activating it to form a bond between the contiguous surfaces of the strips.

The presser device 28 can be reciprocated longitudinally of the strips, in unison with strip- ,feeding carriage 25, the distance between the row of pins 28 and presser device 28 being about equal to a sheet-width or multiple thereof, so

that the presser device will coincide during strip advancement with a row of spots of adhesive adjacent a transverse series of pin-feeding apertures I 9. In this case the members 29 and 3!! compress the strips during the forward move- -ment thereof, and release the strips during the return stroke of the presser device 28.

Preferably, however, the presser 28 remains stationary, and is spaced from the initial stripengaging position of pins 26 by a distance substantially equal to a sheet-width or multiple thereof. With this arrangement, presser members 29 and 39 engage the strip only during rearward movement of the carriage 25 and pins 26, the strips being stationary during this operation, and release the strip during strip-advancing operation of the carriage and pins.

After the strips are secured together in the desired shingled relation, they are severed into assemblies or books at sheet-width intervals. For this purpose, a severing device 3| is provided at the delivery end of the table 24, comprising a knife 32 for cutting the strips transversely to the direction of strip feed and movable in a pair of vertical guides 33 at opposite sides of the table. The shearing device 3! is located relative to the strip-feeding stroke of pins 26, such that the strips come to rest at the end of each sheet-width feeding operation of said pins with a transverse row of spots of adhesive in alignment with the knife 32. The knife descends while the strips are at rest, severing an assembly or book from the strips, the severed assemblies being collected, for example, in a stack 34. The line of severance preferably traverses the spots of adhesive so that part of the adhesive holding the sheets together remains at both margins of the severed assemblies. In this way, the sheets in each assembly are secured together at both lateral edges, and are held against casual displacement during inscription, feeding or handling of the assembly. Preferably, the line of severance is adjacent a transverse row of feed-pin-engaging apertures l9 so that the row of apertures is adjacent a lateral margin of each of the assembled forms after severance thereof. Thus, the series of apertures in the form can be conveniently used for positioning or feeding the assembly in a business machine. i

The adhesive employed as stated above is preferably a thermoplastic composition which can be applied to the strips in the form of a solution in a volatile solvent or vehicle, so that upon evaporation of the vehicle the adhesive is left on the strips in inactive form. However, other kinds of normally inactive adhesives can be employed; for example, an adhesive which is adapted to adhere only to a complementary adhesive,- coated surface upon contact therewith, of the type employed on self-sealing envelopes. When such an adhesive is used, the complementary compositions are applied to both surfaces of each of the interposed strips and to one surfaceof each of the outer strips, the spots being located so as to register with complementary spots on contiguous strips, when all of the strips are brought together in the desired shingled relation, and with their pin engaging apertures I9 in transverse alignment. The adhesive used can also be a kind activated by application of a solvent or swelling agent, the latter being applied to the strips before they pass under roller 23' at the receiving end of the collating table 24. Shingled assemblies produced in accordance with this invention have their component strips or sheets accurately positioned in the desired shingled relation, and held together at opposite sides of the assembly so as to avoid casual displacement thereof during its use. The herein described method for making such assemblies can be readily and conveniently carried out with.- out the use of expensive or complicated guiding and feeding devices, of which operation must-be correlated with an adhesive-applying mechanism, required in methods heretofore proposed. Instead, the device employed according to my invention involves a single strip-feeding and aligning mechanism which aligns the strips in the desired manner, transversely and longitudinally, during each feeding operation; and in conjunction therewith, a simple presser or heating device to secure the sheets together. Variations and modifications may be made within the scope of this invention and portions of the improvements may be used without others.

I claim: 1. The herein described method of making sheet assemblies, having a plurality of sheets secured together in overlapping shingled relaition, which comprises collating a plurality of continuous strips with their lateral margins in overlapping shingled relation, said strips each having a plurality of advancing and aligning apertures at sheet-width intervals therein, the apertures in respective strips being spaced trans verse'ly of the strips so as to register with simiiar apertures in the other strips when collated in the aforesaid manner; engaging a plurality of apertures in each strip and progressively advancing said strips, and simultaneously aligning them in longitudinal and transverse directions by bringing apertures of successive sets into registration; securing said strips together at sheetwidth intervals as so collated and aligned; and severing the resulting secured strips at sheetwidth intervals transversely of the strips to form sheet assemblies.

2. The herein described method of making sheet assemblies, having a plurality of sheets secured together in overlapping shingled relation, which comprises collating a plurality of continuous strips with their lateral margins in overlapping shingled relation, said strips each having a plurality of advancing and aligning apertures therein at sheet-width intervals, the apertures in the respective strips being spaced transversely of the strips so as to register with similar apertures in the other strips when the latter are 001- lated in the aforesaid manner, said strips having areas of inactive adhesive on their strip-contacting surfaces at sheet-width intervals; progressively engaging a plurality of apertures in each strip and advancing said strips, and simultaneously aligning them in longitudinal and transverse directions by bringing apertures of successive sets into registration; activating said adhesive and pressing the strips together to secure the strips together; and severing the resulting secured strips at sheet-width intervals transversely of the strips to form sheet assemblies.

3. The herein described method of making sheet assemblies, having a, plurality of sheets secured together in overlapping shingled relation, which comprises collating a plurality of continuous strips with their lateral margins in overlapping shingled relation, said strips each having a plurality of advancing and aligning apertures therein at sheet-width intervals, the apertures in the respective strips being spaced transversely of I the strips so as to register with similar apertures in the other strips when the latter are collated in the aforesaid manner, said strips having areas of thermoplastic adhesive on their strip-contacting surfaces at sheet-width intervals; engaging a plurality of apertures in each strip and progressively advancing said strips, and simultaneously aligning them in longitudinal and transverse di reactions by bringing apertures of successive sets into registration; heating the strips, and press* ing them together at the adhesive-bearing portions thereof to secure the strips together; and severing the resulting secured strips at sheetwidth intervals transversely of the strips to form sheet assemblies.

4:. The herein described method of making sheet assemblies, having a plurality of sheets secured together in overlapping shingled relation, which comprises collating a plurality of continuous strips with their lateral margins in overlapping shingled relation, said strips each having a plurality of feeding and aligning pin-engaging apertures therein at sheet-width intervals, the apertures in the respective strips being spaced transversely of the strips so as to register with similar apertures in the other strips when the latter are collated in the aforesaid manner; progressively advancing said strips and simultaneously aligning them in longitudinal and transverse directions by engagement of a plurality of transversely spaced apertures in each strip with a set of transversely spaced feeding and aligning pins movable in strip-feeding direction; securing said strips together as so collated and aligned; and severing the resulting assembly at sheetwidth intervals transversely of the strips to form sheet assemblies.

5. The herein described method of making sheet assemblies, having a plurality of sheets secured together in overlapping shingled relation, which comprises collating a plurality of continuous strips with their lateral margins in overlapping shingled relation, said strips each having a plurality of pin-engaging apertures therein at sheet-width intervals, the apertures in the respective strips being spaced transversely of the strips so as to register with similar apertures in the other strips when the latter are collated in the aforesaid manner, said strips having areas of inactive adhesive on their strip-contacting surfaces at sheet-width intervals adjacent said apertures; progressively advancing said strips and simultaneously aligning them in longitudinal and transverse direction by progressive engagement of a plurality of apertures in each strip with a set of transversely spaced feeding pins movable in strip-feeding direction; securing said strips together by activating said adhesive and pressing the strips together after engagement with said feeding pins; and severing the resulting secured strips at sheet-width intervals transversely of the strips to form sheet assemblies.

6. The herein described method of making sheet assemblies having a plurality of sheets secured together in overlapping shingled relation, which comprises collating a plurality of continuous strips with their lateral margins in overlapping shingled relation, said strips each having a plurality of advancing and aligning apertures therein at sheet width intervals, the apertures in the respective strips being spaced transversely of the strips so as to register with similar apertures in the other strips when the latter are collated in the aforesaid manner, and the strips overlying the lowermost strip having areas of inactive adhesive solely on the strip-containing portions of their rear surfaces, at sheet-width intervals; engaging a plurality of apertures in each strip and progressively advancing said strips, and simultaneously aligning them in longitudinal and transverse directions by bringing apertures of successive sets into registration; ac tivating said adhesive and pressing the aligned strips together to secure the strips together; and severing the resulting secured strips at sheetwidth intervals transversely of the strips to form sheet assemblies.

7. The method of making sheet assemblies having a plurality of sheets secured together in overlapping shingled relation which comprises the steps of forming a plurality of continuous strips, each with transverse rows of pin-receiving apertures at sheet-width intervals; applying spots of adhesive to the strips in predetermined relation to the said apertures; collating a plurality of said continuous strips in superposed relation with their lateral margins in overlapping shingled relation; inserting transversely spaced pins in the transversely extending apertures of each strip to align the strips; adhering the aligned strips in assembled relation; advancing the pins to feed the strips; and actuating a severing means in predetermined relation with the advancing of the strips to sever the same at sheet-width intervals.

8. The method of making sheet assemblies having a plurality of sheets secured together in overlapping shingled relation which comprises the steps of forming a plurality of continuous strips, each with transverse rows of pin-receiving apertures at sheet-width intervals; applying spots of thermoplastic adhesive to the strips in predetermined relation to the said apertures; collating a plurality of said continuous strips in superposed relation with their lateral margins in overlapping shingled relation; inserting transversely spaced pins in the transversely extending apertures of each strip to align the strips; applying heat and pressure to the aligned strips in assembled relation to cause the adhesive to secure the strips together; advancing the pins to feed the strips; and severing the assembled strips at sheetwidth intervals.

CARL W. BRENN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Certificate of Correction Patent No. 2,557,723 June 19, 1951 CARL W. BRENN It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 7, lines 32 and 33, strike out progressively and insert the same before advancing in line 34; column 8, llne 51, for strip-containing read strip-contacting and that the said Letters Patent should be read as corrected above, so that the same may conform to the record of the case in the Patent Oifice. Signed and sealed this 18th day of September, A. D. 1951.

THOMAS F. MURPHY,

Assistant C'ommz'ssz'oner of Patents.