US1347242A - Interfolding-machine - Google Patents

Description

G. H. BARTLETT. INTERFOLDENG MAC-PUNK.

- APPLICATION mm MAY s. 2919. 1,347,242. Patented ly 2 19 3 SHEETSSHEET I.

INVENTOR G. H. BARTLETT.

FNTERFOLDING MACKINL APPLICATION FILED an 5. m0.

Puma July 20, 1920.

3 ammu er t- INVENTOR Qeoryfiflkz'fielf ATTORNEY5 G. H. BARTLETT. INTERFOLDING MACHINE. APPLICATION FILED M-AYS, 1919.

1,347,242. Patented July 20, 1920.

3 SHEETSSHEET a. 1& s M

50 E96 4'? M 7 A 11 v I j l v '33 Z INVENTO'R orgeflfiarl efi- ATTORNEYS UNITED STATES GEORGE H. BARTLETT, OF SAN FRANCISCO, CALIFORNIA.

INTERFOLDlQN'G-MACI-IINE.

Application filed May 5, 1919.

To all whom it may concern: 7

Be it known that I, GE RGE H. BARTLETT, a citizen of the United States, residing at the city, and county of San Francisco and State of California, have invented new and useful Improvements in Interfoldingllachines, of which the following is a specification.

This invention relates to an interfolding machine, and particularly pertains to a machineby which interfolded towels may be formed.

Due to the fact that interfolded paper towels have become quite generally used and that the machinery now employed in perfo; rating and folding these towels is very eX pensive and cumbersome,it is the principal object of the present invention to provide a device by which rolls of towel blank may be fed through a. machine and perforated at equal intervals therealong as fed and thereafter folded in interleaved relation to each other to be usedv indispensingreceptacles.

. The present inventioncontemplates the use of' a rigid main frame, within which are journaled a plurality of spindles, geared together sothat they will rotate in synchronism. and carrying suitable perforating and folding members between which the paper blank may be fed and be perforated and in terfolded. r

The invention is illustrated by way of example in the accompanying drawing, in which Figure 1 is a view in plan illustrating the completely assembled machine and clearly showing the arrangement of the perforating and folding element.

Fig. 2 is a view in perspective, disclosing a fragmentary portion of two towel blanks as they are perforated and in the position. in which. they will be folded.

Fig. 3 1s a view in side elevation, showing the papertowels as interleaved.v V

Fig. 4 is an enlarged view, showing the cooperative relation of the perforating rolls tothe folding element and: the means for in suring a positive drive of the towel blanks therethrough.

Fig. 5 is an enlarged view in central section through the folding rolls, showing the mannerin which they are formed to receive the towel-conveying members and. the manner in which they cotiperatively rotate.

Fig. Gis aview in section and elevation,

showing theperforating roll and the blades carried thereby.

Specification 01 Letters Patent.

'port the rollers 15 and Patented July 20, 1920.

Serial No. 294,751.

F ig'. 7 is a fragmentary view in section, disclosing the manner of operation of the perforating blade.

Fig. 8 is a view in perspective, disclosing one of the perforating blades.

Referring more particularly to the drawings, 10 and 11 disclose parallel and vertical frame members, which are rigidly connected by means of horizontal frame members 12 and 13. The member 18 is secured between the vertical members 10 and-11 at a point near the floor, while the member 12 is secured in a similar position, in superimposed relation to the part 13, and carries a number of reinforcing and bearing brackets, upon which the various rotating elements of the mechanism are supported. The rear vertical frame member 11 is provided with an eX- tension bracket 1% which carries a pair of feed rollers 15 and 1 6. These feed rollers are positioned with their rotating axes in horizontal alinement and so disposed as to sup- 16 in a slightly spaced relation to each other. These rollers thus form an opening or throat through which paper blanks may be fed from a pair of magazine rolls 1? and 18.

The threat formed between the feed rolls 15 and 16 is substantially midway the height of the machine andlies in the operating plane thereof. Disposed at equal distances above and. below the operating plane are perforating wheels 19 and 20. These wheels are mounted upon spindles 21 and 22 which are suitably journaled in the vertical frame member 11. Directly above the perforating roller 19 is a secondary perforating roller 24, while directly below the perforating roller 20 is a similar roller 25. These rollers cooperate with the complementary perforating rollers to form a series of perforations through the two parts of a paper blank and to extend substantially the full width of the paper, it being desirable in the present manufacture of paper toweling to leave a certain width of the toweling unperforated, so that the towel blanks will be one continuous piece as itis fed through the machine.

Mounted upon spindles 26 and 27, carried in journals upon the vertical frame member 10, and disposed in equal position upon opposite sides of the horizontal operating plane of'the machine, are folding rollers and 29. These rollers are formed with a plurality of blades extending longitudinally of their cylindrical faces. These blades or teeth, as indicated at 30 on the two rolls, intermesh with each other to fold the two paper blanks in interleaved relation, as will presently'be described. 3

The folding rollers 28 and 29 are adapted to be simultaneously driven by a suitable driving member and to rotate in unison with each other, due to the fact that their gears 31 and 32 are in constantly meshing position. These gears are operated synchronously with gears and 3a which are secured upon the spindles of the perforating rollers 19, 20, 2a and 25. By this means it is intended that all of the rollers, both perforating and folding, shall operate in synchronism, as the toweling is fed therethrough.

The toweling might be fed by conveyer elements 35 and 36. The elements 36 are led around the perforating rollers 19 and 20, while the elements 35 are led around the perforating rollers 2 1 and 25. As more particularly shown in Figs. 5 and 6, it will be seen that the perforating and folding rollers are both fitted with circumferential grooves into which the various roller elements 36 and may feed. These elements are preferably in the form of coils or steel tapes and lead around the perforating rollers and the folding rollers. I

Referring particularly to Fig. 1 of the drawing, it will be seen that the conveyer members are led around the grooves 1n the folding rollers and then passed toward the passage formed in part by spring fingers of the machine to thereafter pass over vidler pulleys 37 which are carried upon upper and lower brackets 38 formed as'a part of the vertical frame member 11. From these pulleys the conveyers 35 are led around the pulleys 15 and 16 which form the throat of the machine, after which the cables pass around the perforating rolls 19 and 20 and then return to the folding rolls. The conveyer elements 36 pass around the perforating rolls 19 and then around idler pulleys 39 which are carried in suitable bearings upon the frame portion 12.

' 'In order that a predetermined tension may be exerted upon the conveyer members at alltimes, various pulleys 40 are disposed at convenient points upon the horizontal frame members and may be adjusted by means of a setgage 11, acting in a slot 12. By operation of these pulleys the tension may be changed as desired and will thus insure that the paper blanks will be securely gripped as they pass between the various rolls of the machine.

Formed as a part of the vertical standard.

10 is a horizontally extending supporting structure e4; This structure is formed with a horizontal passage 4:5, along which the folded and interleaved paper may pass from the folding rolls 28 and 29. This floor is also, partially covered by means of yieldable veying members 35 and the ends of the spring fingers45 and 4E6. It is, of course, necessary that the spring fingers 45 and 46 extend in alternate grooves as considered in relation to the conveyer belts 35. These fingers will thus strip the paper from the rolls and obstruct its movement in such a manner asto stack the paper and to hold it in its folded position. sible for the paper blankto be folded after having'been creased and thus will present them to an operator or to a suitable carriage by which they may be removed and packed in a condition for use in dispensing containers.

By reference to Figs. 7 and 8, it will be noted that the machine is provided with removable perforating blades 47 which have serrated faces 48 and are otherwise formed with intermediate grooves 49; these grooves being designed to accommodate the conveying cables 35 and 36. In Fig.7 it will be seen that the complementary blades of the perforating rolls l9 and 2 1 and'20 and 25 act in an overlapping manner to perforate the paper blank, as indicated by the member 50, thus forming a continuous line of perforations across the width of the toweling as interrupted by the space permitted by the grooves 419.

In the operation of the present invention, blank rolls of paper toweling are placed upon the magazine cylinders 17 and 18 and thereafter led between the rollers 15 and 16 to pass to the perforating rolls 19 and 20.- T he path of travel of the paper is indicated in Fig. 41 where it will be seen that the paper blanks from the roll 18 will pass around the outer periphery of the roller 20 and between the conveyer belts 35. and 36. By this means the conveyer belt 35 will hold the paper against the perforating rolls of the roll 20 and will combine with the belt 36 to form a channel-way within which the paper will be held as it is carried in the direction of the folding roll. At the same time the paper blanks from the roll 17 will be led upwardly and around the perforating roll 19, thereafter to pass between the conveying belts 35 and 36 to the upper folding roll;

\Vhile the blanks are passing between the perforating rolls the blade a7 carried by these rolls will come into overlapping relation, as indicated in Fig. 7, and willact to This makes it'posi The yieldable fingers perforate the blank throughout its width. Due to the fact that the perforating rolls are in synchronism, blades will always hear the same relation to each other and the towel blanks will be perforated at equal predetermined intervals throughout their length. As the paper blanks pass from the perforating roll and to the folding roll they will be drawn between the folding rolls, and, as indicated in Fig. 4, will be folded between the various teeth of the rolls 28 and 29 during the course of their rotation. The position of the folding rolls, in relation to the perforating rolls, is such that the paper blanks will be folded along their perforations and midway therebetween and that the separate blanks, represented by the upper and lower rolls l7 and 18, will be perforated so that the perforations will be in folded relation to each other when the two blanks are interfolded.

By referring to Fig. 2, it will be seen that the perforations of the blanks of the rolls 17, as indicated at A, will be at the lower crease of their folds, while the perforation of the blank from the roll 18, as indicated at B, will be in the upper crease of the fold, thus alternately disposing the perforations in relation to each other upon the separate blanks and making it possible for one piece of towel to be drawn from the dispensing machine and automatically exposing the end of the next succeeding piece, although not completely withdrawing it from the container.

It will be evident that this machine may be used for clipping paper and interleaving paper of various widths without in the least modifying the spirit of the present invention and that the device here shown will eliminate the use of objectionable and unreliable machines using a reciprocal movement and insuring that a continuous operation of perforating and interfolding will be produced by rotary element.

While I have here shown the preferred form of my invention as nowknown to me, it will be understood that various changes in the combination, construction and ar rangement of parts may be made by those skilled in the art without departing from the spirit of the invention as claimed.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In an interfolding machine, a pair of toothed folding rollers mating with each other, conveyer means for carrying flexible blanks to said rollers, and yieldable members adapted to separate the blank from the rollers and to stack the paper folded thereby.

2. In an interfolding machine, a pair of rotary folding rolls, two pairs of perforating rolls, conveyer elements for each folding roll engaged about the latter and about one perforating roll of each pair of the latter and other conveyer elements engaged about the same perforating roll of each pair of the latter and cooperating with the first named conveyer elements.

3. In an interfolding machine, a pair of rotary folding rolls, two pairs of perforating rolls, conveyer elements for each folding roll engaged about the latter and about one perforating roll of each pair of the latter and other conveyer elements engaged about the same perforating roll of each pair of the latter and cooperating with the first named conveyer elements, said other conveyer elements being disposed between the inner flights of the first named conveyer elements and having inner terminals disposed adjacent the folding rolls.

i. In an interfolding machine, a pair of rotary folding rolls, an endless conveyer member connected to each of the rolls, a pair of perforating rolls associated with each conveyer member and having the rolls arranged respectively on opposite sides of a flight of the member and a pair of endless conveyers trained respectively around one of each of the rolls of the perforating rolls and cooperating with the respective first named conveyer members.

5. In an interfolding-machine, a pair of rotary folding rolls, two pairs of perforating rolls, and two pairs of endless conveyers, the two conveyers of each pair cooperating with each other and with the folding and perforating rolls.

6. In an interfolding machine,a pair of folding rolls, a pair of perforating rolls for each folding roll and a pair of endless conveyers for each folding roll and the pair of perforating rolls thereof.

7. In an interfolding machine, a pair of folding rolls, a pair of inner spaced perforating rolls substantially alined therewith, an outer perforating roll cooperating -with each inner perforating roll, and two pairs of endless conveyers cooperating with the respective folding rolls and with the perforating rolls and with each other.

8. In an interfolding machine, a pair of folding rolls, a pair of inner spaced perforating rolls substantially alined therewith,

. an outer perforating roll cooperating with each inner perforating roll, an endless conveyer for each folding roll encircling the adj acent outer perforating roll, an endless conveyer encircling each inner perforating roll and cooperating with the adjacent first named conveyer, the inner ends of the second conveyers terminating adjacent the folding rolls, and the first named conveyers having parts spaced and substantially alined with the folding rolls.

9. In an interfolding machine, a pair of folding rolls, two pairs of perforating rolls spaced from the folding rolls, an outer endless eonveyer engaged around each folding my hand in the presence of two subscribingroll and coiiperatingwvith the rolls of the Witnesses. v r 1 adjacent perforating rolls, and an inner V I GEORGEH BARTLETT endless conveyer coijperating with the first V 5 named conveyer and with the respective Witnesses:

other perforating rolls. JOHN H. Hnmzme, In testimony whereof I have hereunto set NV. WV. HEALEY.

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