US2619034A

US2619034A - Interleaving machine

Info

Publication number: US2619034A
Application number: US770410A
Authority: US
Inventors: Richard W Bailey
Original assignee: MILO M HARDING
Current assignee: MILO M HARDING
Priority date: 1947-08-25
Filing date: 1947-08-25
Publication date: 1952-11-25
Anticipated expiration: 1969-11-25

Description

NOV. 25, 1952 w, BAlLEY 2,619,034

INTERLEAVING MACHINE Filed Aug. 25, 1947 3 Sheetg-Sheet 1 IN VEN TOR.

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Nov. 2 1952 0 2, BAILEY E CHIN TERI EAVING MA I s Shae NOV. 25, 1952 w, BAlLEY 2,619,034

' INTERLEAVING MACHINE Filed Aug. 25. 1947 3 Sheets-Sheet 3 ZIIIIIIIII/IIIIIIIIIIIII/I IIIIIVIIIIIIIIIIIIIIIIIIIIIIIIIIIII/IIIIII/b WllH m n ii'r- ||l|Iihi=- IN VEN TOR.

ai/i011 QTIQQNEV Patented Nov. 25, 1952 UNITED STATES PATENT OFFICE IN TERLEAVIN G MACHINE Richard W. Bailey, Los Angeles, Calif., assignor to Milo M. Harding, Los Angeles, Calif.

Application Augusti25, 1947, Serial No. 770,410

Claims. (01. 101-3419) This invention relates to a machine for placing sheets of suitable absorbent material between successive, freshly printed pages or leaves as they are delivered by a mimeograph, printing press, or the like, to prevent smearing or blurring, or any transfer of the printed matter to the back of the succeeding page.

It is an object of this invention to provide an improved machine for this purpose.

Such machines are commonly connected for operation by the mimeograph or other duplicatin-g machine in conjunction with which they are intended to operate. It is another object of this invention to provide interleaving apparatus having improved means for feeding the slip sheets in accordance with the delivery of the printed leaves by the mimeograph.

Mimeographs and the like frequently have optionally operable means to control the feeding of the paper which is to receive the printing. It is another object of this invention to provide an interleaving machine wherein the operation of such control means to prevent feeding of paper to the duplicating machine also causes cessation of delivery of the slip sheets.

It is still another object of this invention to provide an interleaving machine wherein the delivery of the slip sheets may be stopped, optionally without interfering with the operation pf the associated mimeograph or duplicator.

In United States Patent No. 1,972,070, issued to E. Jacobson et al. on August 28, 1934, for interleaving Machine, feed mechanism is disclosed and claimed for releasing slip sheets one at a time, to drop by gravity in accordance with the-delivery of printed sheets by a duplicating machine. It is a still further object of this invention to provide improved means for operating feed mechanism of this type.

This invention possesses many other advantages and has other objects which may be made more easily apparent from a consideration of one embodiment of the invention. For this purpose there is. shown a form in the drawings accompanying and forming part of the present specification. This form will now be described in detail, illustrating the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense since the scope of the invention is best defined by the appended claims.

In the drawings:

Figure 1 is a side elevation showing interleaving apparatus embodying the features of the inven tion, connected ,for use with a conventional d upl-i-' eating machine;

Figure. 2,. but showing a diiierentoperating; ppsi -L tion of. the parts;

Figure 7 is a view similar toFigure 6, but show ing. still another operating position of the parts; Figure 8- is a. fragmentary cross. section, taken substantially as indicated by line 8..8 of Figure. 5.; Figure 9 is an elevation of the cam member for operating the mechanism to release theesl-ip sheets; and

Figure 10. is a .developmentot portion oisaid. element, in accordance with line. llflfllloi.

Figure 9..

Referring to Figures 1 to 4 of the drawings, the slip sheet machine is indicated generally by h -numeral l nd is shown in Figure I. as are. ranged for use. with a convention l mimeoeraphor other duplicating machine 2. The machine I comprises a base .3 providing. a flat horizontal $1.11? ac fo the r p io of. th p d pa es from the duplicator 2.

A plurality f i ere or s i sheets 4 Qt suitable absorbent material, such for example as light cardboard, are supported above the table 3 for release successively to drop on each printed page after it has been delivered by the duplicator 2. I

The group of sheets 4 are maintainedassuch, or in What is known in the art as a book 5, by means of a wire loop 6 on which the sheets are freely slidable. The handling of the sheets is greatly facilitated in this way.

-The means for supporting the sheets 5 above the base 3 is substantially the same as that shown in the previously mentioned United States Patent- No. 1,972,070, and comprises a column I'll with awidened base portion. Its-a, secured on the base 3. The column 10- extends upwardly from the;

base 3 past one edge of the book 5; and. has an arm H overhanging the book 51 from which .de; p n s the supporting member 12.. .As clearly: Shownin Fi s. 2, 3.3 and 4,. he member 12 extends through the aligned apertures 4-a provided in the sheets 4 and is provided with a pair of oppositely projectable fingers l4 and 15 near its lower end, which support the sheets 4.

The fingers I4 and are pivoted on opposite sides of the lower end of a lever l8 which in turn is pivotally supported on a pin [1 for oscillating movement in a slot l2-a formed in the member I2. The fingers l4 and I5 have respectively, portions l4-aand l5-a which are adapted to project from theniember l2 and are provided at their outer ends with bent-over lugs I l-b and -12 to provide increased bearing areas for engaging the sheets 4. It is preferred to have the sheets 4 supported at an inclination as shown in Figure l, the lugs l4-b and 15-!) being correspondingly inclined, as shown in Figure 4.

The fingers l4 and i5 also have respectively, short inner extensions l4-c and 15-0 engageable by the aligned pins l8 and I9 which are separated to permit passage of the lever [6 between them.

The arrangement is such that when the lower end of lever I6 is at the limit of its movement to the left, pin 18 by engagement with the inner end l4-c of the finger l4 maintains the outer end l4-a projected and in sheet supporting position. as shown in Figure 2, the other finger I5 being in retracted position by having swung downwardly about its pivot.

Similarly, when the lower end of the lever I6 is at the limit of its movement to the right, finger I5 is projected into supporting position and finger I4 is retracted. One of the fingers l4 or I5 is always partly projected before the other is fully retracted. In this way, the entire group of sheets 4 is prevented from slipping off the member I2 and by providing alternate sheets 4 with oppositely directed slotted extensions, 44), from the apertures 4-11, only the lowermost sheet will drop in response to retraction of one finger and projection'of the other. Thus in Figure 2 the slot 4-bin the bottom sheet 4 will pass the finger I5 as it is projected, allowing the sheet to drop as finger 14 is retracted, but the sheet 4 next above will be supported on the finger 15 since the slot 4- b therein extends oppositely from the aperture 4-'a.

The fingers l4 and I5 are adapted to swing upwardly about their pivotal mounting into the slot |2a, to clear the apertures 4-a. Thus the sheets 4 may be mounted on the member l2 by moving them upwardly so that the member [2 enters the apertures 4-a. The sheets as they are moved upwardly swing the fingers l4 and I5 to allow free passage of the sheets, the fingers returning to holding position by their weight after the sheets have cleared the fingers.

As ameans of oscillating the lever IS, an operating member 22 is pivotally mounted within the arm I!) which is of channel-shaped cross section. as by a pin 23 intermediate the ends of the member 22. The upper end of member 22 is connected to the upper end of the lever Is by a pivoted link 24. The lower end of member 22 is slotted, providing a pair of opposed convex surfaces 22-a and 22-!) between which is accommodated the outer portion of a circular plate cam 25 (see Figure 2).

As clearly shown in Figures 9 and 10, the outer portion 26 of the cam 25 has angularly spaced axially offset cam surfaces 26-12. and 26-h. Thus whenthe cam 25 is axially restrained and rotated, the successive engagement of these portions 26-00 and 26-12 with the surfaces 22-11 and 4 22-b causes the member 22 to oscillate, in turn oscillating the lever l6, and causing the fingers l4 and 15 to be alternately projected and retracted. Since, as previously explained, the retraction of either finger 14 or l5 releases a sheet 4, the fingers are arranged to be operated in accordance withthe delivery of the printed pages by the duplicator 2. For this purpose, the cam 25 is arranged to be advanced in a step by step manner by angular increments corresponding to the angular spacing between the cam surfaces 26-a and 26-h, each time that a page is delivered.

As shown in Figure 2, the cam member 25 is secured on the hub 21 of a ratchet wheel 28, the hub 21 being rotatably supported on a headed pin 29 suitably secured in the column ID. A light compression spring 38 confined between the ratchet wheel 28 and the wall of the column serves to frictionally restrain the

assembly

25, 21, 28 against rotation, except when positively urged by means of a pawl member 3| cooperating with the ratchet 28, as will be explained shortly.

Referring to Figure 1, the mimeograph 2 is of that type wherein the pages which are to receive the printed matter are fed by means of a paper feed (not shown) operated by a reciprocating bar 35 connected to one arm 36 of a bell crank pivoted at 3'! on the mimeograph frame. A connecting rod 38 is connected to the other bell crank arm 39 and is operated by an eccentric 48 on the shaft 4! of the printing drum 42. The arrangement is such that each time the drum 42 rotates a printed page is delivered to the table surface on frame 3.

To advance the cam 25 so that a slip sheet 4 is dropped on the delivered page, the pawl member 3| is connected to the bell crank arm 36. To avoid the necessity of drilling this arm a clamp 43 is provided to which one end of the member 3| is pivoted at 44 and which may be secured about the arm 36 in adjusted position. As shown in Figure 5, the number of teeth on the ratchet wheel 28 corresponds with the number of cam surfaces 28-a, 25-21, on the cam member 25. The pawl member 3| carries a pin 3l-a adjacent the ratchet wheel 28, and is urged upwardly about its pivotal support 44 by a tension spring 45, so that the pin 3l-a will engage the ratchet wheel.

In Figs. 1 and 5, the pawl member 3| is shown at the end of its advancing movement. The arrangement is such that operation of the paper feed mechanism moves member 3! to the left (Figure 5) so that pin iii-a can engage the next tooth on the wheel 28 and is urged into engagement therewith by the spring 45. Thus the ratchet wheel 28 is rotated by pushing move ment of the member 3|.

In connection with some types of duplicators, it may be necessary to operate the ratchet wheel 28 by a pulling movement of the member 31, to obtain proper synchronization between delivery of the printed pages and release of the slip sheets. This merely requires that the ratchet wheel 28 be reversed.

The mimeograph 2 also has a paper control cooperating with the paper feed and which serves optionally to prevent operation of the paper feed Without stopping the mimeograph. This paper control is operated by an arm 52 extending rearwardly from a bell crank 41 pivoted at 48 on the mimeograph frame, and having an arm 49 carrying a roller 58 urged to engage a cam 5| on the mimeograph drum shaft 4| by a tensio spring 53 connected to the arm 52. 7 r

Th be -l crank. also has a dQ tW-ardly' extending arm 54 connected, by an offset rod 55 with an arm 56 of a small bell crank 51 pivotally mounted. on a bracket 58 accommodated in the widened base portion [-11 of the column ID. The other arm 59 of the bell crank 51 carries a roller 60 adapted to engage the upper surface of the pawl member 3|.

As shown in Figure l, the relation between the eccentric 40 and the cam 51 is such that during the advancing movement of the pawl member 3|, the bell cranks.- 41 and 51 are in their upper positions, pin 3l-a. being urged into engagement with theratchet28 by the spring '45.. On the. return movement, the. bell cranks d! and '5'? are in. their lower positions, .and roller 50 acting on the member 31 maintains the. pin Si-a clear of the ratchet 28.

As a means of optionally maintaining the paper control in position preventing operation of the paper feed, a conventional spring pressed latch indicated at 62, is provided in the mimeograph frame for maintaining the arm 52 in its upper position with the bell crank 41 free of the cam 51. Since in this position the roller 60 by engaging the pawl member 3l, prevents engagement of the pin 3I-a with the ratchet 28, the slip sheeting mechanism is also prevented from operating.

Means also are provided for optionally preventing operation of the slip sheeting mechanism independently of the operation of the mimeograph 2. Thus an arm 63 is rotatably supported within the column base Ill-a by a short shaft 64 extending through the side wall of the base. Arm 63 carries a roller 65 at its free end adapted upon appropriate movement to engage the pawl member 3| and maintain the pin 3l-a free of the ratchet wheel 28 (see Figure '7) The outer end of the shaft 64 has a knob 56 secured thereon for moving arm 63 to a position preventing operation of the ratchet wheel 23 or to release the member 3|, permitting operation of the ratchet wheel 28. As shown in Figure 8, the knob 66 may carry a spring pressed ball 61 adapted to engage a suitable depression (not shown) formed in the column wall to maintain the arm 63 in the operation preventing position of Figure '7.

I claim:

1. In slip sheeting apparatus adapted for cooperation with a duplicating machine to place sheets between successive printed pages delivered by the machine, said machine including optionally operable means for preventing the feed of pages to be printed, said apparatus comprising means supporting a group of slip sheets and operable to release successive sheets: means for operating said supporting means to release said sheets, including a rotatable cam having angularly spaced cam surfaces, means including a pawl and ratchet mechanism for advancing said cam by angular increments substantially equal to the spacing of said surfaces in accordance with the delivery of said pages, a pivotally mounted arm adapted to engage said pawl and maintain it free of the ratchet, and means forming an operating connection between said arm and said optionally operable means, whereby operation of said means to prevent feed of pages to be printed operates said arm to pawl engaging position to prevent operation of said supporting means to release of said sheets.

2. In slip sheeting apparatus adapted for cooperation with a duplicating machine to place of pages to be printed, said apparatus. comprisin means sup orting a group of slip. sheets and operable to release successivev sheets: means. .for operating said supporting means to release. said sheets, including av rotatable cam having angue larly spaced cam surfaces, means. including a pawl and ratchet mechanism for advancing said" cam by angular increments substantially equal'to the spacing of said surfaces in accordance with the delivery of said pages, a pair of pivotally mounted arms adapted for independent movement to engage said pawl and maintain it free of the ratchet, one of said arms being optionallyoperable to pawl engaging position, and meansforming an operating connection between the other arm and said optionally operable means, whereby operation of said means to prevent feed of pages to be printed operates said arm to pawl engaging position, either of said arms when in pawl engaging position, preventing operation of said supporting means to release said sheets.

3. In slip sheeting apparatus adapted for cooperation with a duplicating machine to place sheets between successive printed pages delivered by the machine, said machine including optionally operable means for preventing the feed of pages to be printed, said apparatus comprising means supporting a group of slip sheets, including a pivotally mounted vertical member, and operable to release successive sheets in response to movement of said member: means for operating said member to cause said supporting means to release said sheets, including a rotatable cam having angularly spaced cam surfaces, a ratchet in driving relation with said cam, a pivotally mounted pawl member operated by said machine in accordance with the feed of said pages for advancing said cam by angular increments substantially equal to the spacing of said surface, resiliently urged about its pivot to engage said ratchet, and means operated in response to operation of said optionally operable means to prevent feed of said pages, engaging said pawl and preventing movement thereof into engagement with said ratchet.

4. In a slip sheeting apparatus for use with a duplicating machine to place sheets between printed pages delivered by the machine, said machine including optionally operable control means for preventing the feed of pages to be printed: a vertical lever rockably mounted intermediate its ends for movement between a pair of limiting positions; means mounted on the lower end of said lever for supporting a group of slip sheets having apertures through which said lever extends, and operable upon movement of said lever to either of said limiting positions to release successive sheets; a second rockably mounted vertical lever spaced from the first mentioned lever and connected in operating relation therewith by a link; a rotatable cam having angularly spaced cam surfaces successively engaging said second lever; pawl and ratchet mechanism for advancing said cam; and means including an element movable in response to operation of said control means preventing feeding of the pages, preventing engagement of said pawl and ratchet.

5. In a slip sheeting apparatus for use with a duplicating machine to place sheets between printed pages delivered by the machine, said machine including optionally operable control means 7 for preventing the feed of pages to-be printedi a vertical lever rockably mounted intermediate its ends for movement'between a pair of limiting portions; means mounted on the lower 'end of said lever for supporting a group of slip sheets having apertures through which said lever extends, and operable upon movement of said lever to either of said limiting positions to release successive sheets; a second rockably mounted vertical lever spaced from the first mentioned lever and connected in operating relation therewith by a link; a rotatable cam having angularly spaced ca'm'surfaces successively engaging said second lever; pawl and ratchet mechanism for advancing said cam; means including an element movable in response to operation of said control means preventing feeding of the pages, preventing engagement of said pawl and ratchet; and op- 8: tionally operable means for preventing engagement of said pawl and ratchet independently of said element.

RICHARD W. BAILEY.

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

UNITED STATES PATENTS Brasseur May 5, 1942