US1788662A - Duplicating with the aid of stencils - Google Patents

Description

jan.13,1931. G. E. CRV'EED 1,788 ;662

DUPLICATING WITH THE AID 0F STENCILS Filed Dec. 18. 1929 4$hets-Sheet 1 Jan. 13, 193i.

G. E. cRg D DUPLICATING WITH THE A ID OF STENCILS Filed Dec. 18, 1929 4 Sheets-Sheet 2 a; (M r Jan. 13, 1931. s. E. CREED DUPLICATING WITH THE AID OF STENCILS Filed Dec. 18, 1929 4 Sheets-Sheet 3 Jan. 13, 1931,. G. E. CREED 1,783,662

DUPLIGATING WITH THE AID 0F STENCILS. I

Filed Dec 18. 1929 4 Sheets5heet 4 6 Gag;

Patented Jan. 13, 1931 f UNITED STATES PATENT OFFICE enongn nannsr 01mm), or Lennon, ENGLAND, ASSIGNOR r 1). eEs'rE rNnn LIMITED,

' 01* LONDON, ENGLAND DUPLI ECATING WITHTHE 0F STENCILS Application filed December 18, 1329, Serial No. 415,107, and in Great Britain December 20, 1928.

This invention relates to duplicating with the aid of stencils. A i

As is well known stencil sheets, which are treated for the production ofstencils for use 5 in duplicating manuscript or typewritten matter, drawings andthe like, consist of a sheet'of stencilizable material provided with or secured to a strip of relatively strong paper orthe like which is commonly described as a stencilheading. To the heading is also secured a' backing sheet which after the'sheet 'has been stencili'zed or converted into a stencil, is separated from the heading. it Hitherto it has been the usual practice to provide in the stencil heading a plurality of holes or slots, which may be of L-shape, adapted to engage pins provided on the stencil fastening means which is part of thedua0 plicating machine.

Similarlyporous sheets adapted to be arranged. between the stencil andythe inking means of the duplicating machine have been provided with headings of this character.

It has, moreover, been proposed to form a stencil heading with tabs or projections having holes or slots formed therein, the sides of the tabs ,or projections being designed to facilitate the appropriate location of the stencil heading relatively to the stencil fas tening means which is part of the duplicating machine and to assist in the engagement of the holes in the stencil heading with pins or studs provided, on, the fastening means:

In the following description the expression"stencil heading will be employed generally as denoting the heading of astencil or stencil sheet and the heading of a porous "sheet or other device adapted to be mounted 4 on the duplicating machine with one of its faces in contact with'one or other of the faces ofthe stencil. v l

One object of'the present invention is to provide an improved stencil heading adapt 4 'ed'to facilitate the securing of stencils, stem-.-

cil sheets,-p-orous sheets and'the like in posi- I I I 1 are directed towards the stencil sheet or the 7 tion on a duplicating inachine.-

i A: further object of the invention is to pro"- ride stencils, stencil sheets, porous sheets, or 4 to the like having improved heading whereby they may be secured in position on a dupli eating machine. I

According to the invention the stencil heading is furnished with one or more tongues or, flaps or equivalent elements the 5 free ends of which, when directed towards the stencil, stencil sheet or the like, by their displacement away from the body. of the stencil heading are adapted to cooperate with stencil fastening means on the duplig eating machine and thereby secure or assist n securing stencils, stencil sheets, or the like. 1n position thereon.

Thus, for example, the tongues or flaps or equivalent elements may be arranged to, be 05 displaced relativelyto the remaining port1on of the stencil heading in such manner thatthe fore edge or fore edges thereof will plane parallel with'the plane ofthe body of the stencil heading are adapted to co-operate wlth the. stencil fastening means on the duphcating machine ,to secure or assist in se-.

curing the stencils, stencil sheets or the like 0 'withlwhich the stencil heading is associated in position thereon.

Thus, the tongues or flaps 'orequivalent elements may be provided on thestencil heading in such manner that when they are moved abouttheir point of connection with the re: 7 maining portlon of the stencil heading into a POSltlOIl 111 which they are inclined at an angle therewith, the fore edge or fore edges of 7 i the tongues or flaps wilhbe adapted to bear against-an abutment member forming part of the fastening means of the duplicating machine; For example, in accordance with the invention, the stencil heading is provided with tongues, flaps or'iequivalent elements which on the'jsten'ci'l fastening means on the dupli i cating machine they will be displaced about their point of connection with the body of the stencil headinginto a position in which they will co-operate with the said fastening means and thereby secure the stencil, stencil sheet or the like in position thereon. y The stencil heading in accordance with the invention may conveniently be provided with tongues, flaps or equivalent elements adapted.

by members associated with the stencil fasten: ing means on the duplicating machine extending from one face of the heading to beyond the opposite face thereof to be moved about their points of connection into an inclined position with respect to the adjacent portion like is formed or provided with indentations 5 adapted to guide the stencil heading into position and to facilitate in co-operation with the stencil fastening means of the duplicating machine in centering or aligning the stencil sheet or the like on the machine, when the stencil heading is moved in one direction as, for instance, in the initial operation of engaging it with the stencil fastening means while as above indicated the tonguesrfiaps or equivalent elements may be so formed as to assist in centering on aligning the stencil sheet or-the like when the stencil heading is moved in the reverse direction.

The indentations may be in staggered relation with the tongues or flaps or may be otherwise arranged and conveniently they and the tongues or flaps are V-shaped;

or more portions'of the material of the stencil- To facilitate the insertion of .a stencil sheet, provided with such indentations, in a typewriter for the purpose of stencilizing, the steneil heading maybe provided with a detachable portion, the free edgeot which is straight and-which when removed from the remaining portion of the stencil heading its removal provided leaves the edge left by with indentations.

Normally in accordance with the invention the tongues or flaps are formed in the stencil I heading by providing therein one or more suitably shaped incislons so as toprov1de one ieadingadapted to be displaced relatively to the remainder or main portion thereof.

The invention will be described further in r detail and by way of example with reference or assist in securingv to the accompanying drawings, in which Flgure 1 1s a fragmentary view 1n elevation of a stenc l sheet showing the stencil heading,

and v Figure 2 is a similar view of a porous sheet having a heading or stencil fastening means fied construction incorporating a silk carrier provided on each of its two opposite ends with rigid members as illustrated in front and side elevations, respectively, in Figures 5 and 6;

Figure 7 is a sectional view on a larger scale of one construction of the said means, and I Figure '8 is a front-elevation of a generally known type of duplicating machine provided with stencil fastening means as illustrated in F i ures 3 to 6 or in Figure 7,

' lfi igure 9 being a v corresponding and elevation thereof, while Figures 10 and 11 are, respectively, fragmentary views in elevation of an alternative form of stencil heading-provided on a stencil sheet and a backing sheet, respectively.

Referring to Figure 1, 1 represents a portion of the backing sheet of the stencil sheet,

. 2 a stencil sheet attached thereto, 3 the'stencil heading which forms a continuation of the backing sheet which will normally be a sheet of relatively stiff paper doubled over adjacent to one end to provide a reinforced and strengthened portion forming the stencil heading, 4 are tongues or flaps formed in the stencil heading by providing therein V- shaped incisions 5, the top edge of the stencil heading being cut back to form recesses 6 in the vicinity of the incisions to prevent this portion of the heading being distorted in consequence of the displacement of the tongues when the stencil sheet is placed on the stencil-duplicating machine. In addition, deep or recesses 7 are-provided in the. stencil heading, as illustrated in Figure 1, these recesses being provided in the construction illustrated to. enable the stencil sheet to beclnounted on a poroussheet as illustrated in Figure 2.

In Figure 2, 8 illustrates the backing sheet for the porous sheet '9, which may be a sheet of yoshino paper, the backing sheet being provided merelyforthc purpose of facilitating the handling of a material of the flimsy character of yoshino paper or other suitable highly orous material. 1

The acking sheet which is engaged with the porous sheet at one end constitutes the heading 10 adapted to be secured to the stcn-' cil fastening means of the duplicating-machine. and this heading is furnished with loo the duplicating machine in association with 1 ill I35. orporous sheet withthe fastening means.

I rhea-sea tongues 11 by. formin in the material of the the stencil heading for the purpose explained I V :in connection with Figure 1 and other deep-- or recesses'll' are .provided in the stencil heading. These deeper recesses, as will be seen, are arranged so that, when a structure as illustrated in Figure 1' is su erimpbsed on igure 2 with" a structureas illustrated vin the edges of the sheets in alignment, they I .w-ill not. bein register with the-deep recesses v 7 in the stencil sheet but with the tongues therein, while the deep recesses? in the head:- ing of the stencil sheet will'be in register with the tongues .11 on the heading of the porous sheet, the urpose of this arrangement being to enable t he'tongu'es on the two 'sheetsto be displaced independently of one another in a manner'hereinafter to be described. a

' Referring to Figures 3, 4 and 7 ,which illusv trate the stencil fasteningineans normally secured to 01" forming part of theduplicating I machine, 15 is the lower member-thereofwhich will be located adjacent to .the "inking means of'the duplicating machine and which I extends the whole width thereof'and 1 6 is an .upper member hinged to the lower member by the pin 17 and associated witha" spring .18

adapted to constrain the free edges of the two members to approach one another, a tongue 19 being rovided for moving theupper men bGFT-elMHVely to the lower memberin opposition-to the-spring when engaging a stencil Theu per member lfirisby, a pressing op- -.eration unned withrecesses 20, the forwardlimits 21 of-tliese recesses forming abutme-nts for the tongues on the stencil headingand the 401 heading of the porous sheet.

In the constructionillustrated in Figure 7.

' 'one of several possible alternative constructions of heading falling within the scope of I the invention. i i

on the lower member 15 of the stencil fastoning means are provided a plurality of tongues 22-certainof which are arranged to displace the tongues on the stencil heading or the tongues in the. heading of the porous sheet in the manner shown in this figure thereby causing the forward edge of the elevations 22 in Figure .7 but instead of being formed on the lower member of the stencil fastening, means they are formed in the ri 'd member24 which is secured'to one end 0 "the'silk'l carrier 25,'see Figures 5 and-6, co? the. other endof which is secured in the rigid member26. The member124 is provided also with project-i0ns27 on itsunderface adapted" toengage in corresponding holes 28' in the [lower member of the stencil fastening means.

In. the stencilifastening means arecess 291$:

1 tions to a le'n inking cylinders and adaptedto pressthe p per on which the mattercut in the stencil placement. In Figure 11, 54;-i11dicates the backing of member of the-stencil fastenihgmean pin is provided to prevent-thematic place the eton'guesioriit oil sheetan'dp'n th sheet;

Asshownjin teningm'eans'lis 1g e ea d protector, which mzltfnmgisg-connected to a member. i These s 38 of-the slides-533 being arranged to be engaged by loops 39- in-the ends of the springs d' u' eadown iniithe' hen-igsorengag'ed;

,"the; stencil fa's;

construe; I flex ble and -ink-proof sheet materialrtll; ommonlyiknown'as the rovided in therear edge? Of'th rigid-meme Y heading v-shapedinclsions 12. Adjacent to or 24 and a pin 30 is protided ith lower;

these incisions recesses 13 are provided ini 'with slides33 engaged by pins 34onthe rigid I p des re located-adjacent to the holes; 3'5zdesig'nedto engage pins36= on thewflexible steel'bands tl'lprovided. in the construction of; duplicatin -m'achine illus .tratedin Figures- 8fand-9, t eiupturned ends 40 secured to the rigid member 26 provided r in one end of'the silk' carrier. In; this way the silk carrier,with the. rigid member '24 engaged by the stencil iasteningmea-ns will be drawn tightly over-the, inking rollers and the protector 31 will also be drawn taut.

- In Figures 8 and .9, 41 are the side members of the duplicating mac ine, t2-and 43 the the stencil. 1 1

- The stencil headin maybe varied in form is to be formed against the pressure :roller and construction wit in relatively wide li1nits without exceedin -the scope of the pres ent invention and figures 10 and 11 show In Figure 10', 48 indicates thebacking sheet of a stencil sheet, 49 the-mainportion of the heading which is formed with recesses the dotted lines 52 constituting tongues or f flaps adapted to be displaced in a manner sinr' ilaruto the tongues 7 inthe construction illus trated in Figure 1 by theelevations '22 or 23 on the 'stencil fastening means. (see Figures 4 and-7), the slots 53 being provided toenable the said elevations .to effect suchfdiss the porous sheet, '55. the extremities of V-sh'apled elements forming part of-theheading w ich when bent over alon the dotted.

lines 56 will constitute tongues a apted to'be displacedby elevations on the stencil fasten ing means'enteringthe holes 57.

l. he; invention is particularly, concerned with stencil sheets for use with the fastening means as described in the specification of the v catlngmachlne, comprising a body copending application for Letters Patent No.415,106. ,y

Having now described my invention, what I claim as new and desire to secure by Letters Patentisz v 1. A stencil heading whereby stencilsheets, porous sheets,. and the like may be engaged with the stencil fastening means of a dupli ortion and tongues connected with said he y portion adapted when directed towards the stencil sheet by their displacement from the plane of the body portion to co-operate with the stencil fastening means of aduplicating machine in securing the stencil sheet in position thereon.

2. A stencil heading wherebystencil sheets, porous sheets, and the like may be engaged with the stencil fastening means of a duplieating machine, comprising a body portion with the stencil fastening means of a and tongue elements hingedly connected with the body-portion adapted when directedtowards the stencil sheet b their displacement from-the plane of the y portion to cm operate with the stencilfastening means of a duplicating machine in securing the stencil sheet in position thereon.

3. A stencil heading whereby stencil sheets,

porous. sheets and thelike may beengaged P- catmg machine, sa d stencil. fastening means including, an abutment member, comprising a body portion and tongues connected with said body portion adapted when directed towards the stencil sheet byfthir displacement away from the plane of the-body portion to bear against the abutment member of the stencil fastening means.

- (1. A stencil heading whereby stencil sheets,

- porous sheets and the like may 'beengaged with the ncil fastening means of a duplicating machine, said stencil fastening means including an abutment member, comprising a. body ortion of a width corresponding with the wi th of the stencil sheet and ton e elements hingedly connected with the b y portion adaptedby their displacement from the f plane of the same to engage against the abutment member of the stencil fasteninglmeans.

5. A -stencil,headingwh'ereby stencil sheets, porous sheets and the like may be engaged with the stencil fastening means of a duplii eating machine, comprising a. body portion and tongue elements in hinged connection with said body portion having their fore edges directed away from the hinged connection and towards the bod of the stencilsheet.

6-. A stencil heading w ,ereby stencil sheets, porous sheets and the like may be engaged with the stencil fastening means of a dupli catingmachine, comprising a body portion,

I tongue elements in hinged connection with 'sai body portion having their fore edges directed away from the hinged connection and towards the body of the stencil and incisions in the body of theheading adjacent to the tongue elements adapted to facilitate displacement of the tongue elements from the plane of the body portion.

7. A stencil heading whereby stencil sheets, porous sheets, and the like may be en aged with the stencil fastening means. of a duplicating machine, comprising a body portion and incisions therein leaving tongue elements adapted to be displaced'relatively to the body portion' 8. A stencil heading whereby stencil sheets, porous sheets, and the like may be engaged with-the stencil fastening means of a uplicating machine, comprising a body portion, incisions therein forming open-ended s leaving tongues movable relative to the b0 y ortion.

9. stencil head whereby stencil sheets, porous sheets, an the like maybe engaged with the stencil fastening means of a duplicating machine, comprising a strip of sheet material ada ted to extend substantially across the in 'ng means of a rotary duplicating machine and parallel with the axis of rotation of the said inkin and bifurcated incisions in said strip 10. A stencil sheet, a heading formed of tough sheet material secured 'to one edge thereof and incisions in the heading leavin tongueelements, the \free extremities 0 which are directed towards the stencil sheet; 11. A stencil sheet, a heading formed of tough sheet material secured to one ed means,

thereof and bifurcated incisions in thehea ing leavi ton .tremities 2% whic material than'the be of the. stencil s eet connected therewith adjacent to one end of the stencil heading and bifurcated incisions in the stencil heading, the free edges of which are directed towards the stencil sheet.

14. A combined stencil sheet comprising a sheet of stencilizable material, a backmg sheet of relatively flexibl'e'but tough. material arranged on one side of the stencil at relatively tou 1...

ice

sheet, a connection between the sheet of.

stenciliaable' material-and the backing sheet adjacent to one end' thereof and bifurcated incisions inithe material of'the backing sheet leaving tongues, the fore edges of which are directed towards the main. portion of thestencil sheet 15. A combined stencil sheet comprising a sheet. of f stencilizable material, a backing sheet of relatively flexible but tough material arranged on one side, of the stencil sheet, 7a,?

connection between the sheet of stencilizable material and the backing sheet adjacent to 8 one end thereof and V-shaped incisions in the material of the backing sheet leaving tongues, the fore edges of which are directe towards the main portion of the stencil sheet. v 10 16. A combined stencil sheet comprising a sheet of stencilizable material, a backmg sheet of relatively flexible but tough material arranged on one side of the stencil sheet, a connection between the sheet of stencilizable material and the backing sheet adjacent to one end thereof and V-shaped incisions and V-shaped recesses in the free edge of the stencil heading, the a ices of the V-shaped recesses and incisions eing' at right angles with the line of connectlon between the stencilizable material and thesbackin sheet.

17. A stencil sheet, a heading 0 tough sheet material secured adjacent to one edge thereof and tongues on the said heading adapted by displacement vto efie'c-t engagement of the stencil sheet with the stencil fas tening means of a du licating machine.

18. A stencil heading comprising tongue elements normally in the plane of the heading adapted to be inclined relatively to the heading to engage the stencil fastening means of a duplicating machine 19. A stencil sheet comprising a heading, and tongue elements normally m the plane of'the headin adapted to'be inclined relatively to theeading to engage the stencil fastening means of a do licating machine.

In testimony whereo I have signed my v name to this specification.

40 GEORGE ERNEST CREED.

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