US1769597A - Impression-transferring device - Google Patents

Description

1 Jul 1, 1930.

S. A. NEIDICH IEMPRESSION TRANSFERRING DEVICE Filed May 5, 1927 FIG 1 Patented July .1, 1930 UNITED STATES eATEN T- oFF1cE.

sArmE A. 'NEIDICH, or EDGEWATER PARK, new annsnY, I Ass mnon 'IO Harmon rnocnss COMPANY, or eunnrneron, NEW JERSEY, A eonrona'rron or DELAWARE f B I -TRA sFERRING nnvrcn Application filed May 5, 1927 Serial no. 189,050.

My invention may be employed with particular advantagein conjunction with typewriting machines of the plane platen'type; for -instance,such manifolding machines as are manufactured by Elliott-Fisher Company. In such machines, several carbon paper webs are wound in a single roll, from which they are withdrawn transversely to several webs of paper upon which original and transferred impressions are to be made; the carbon paper webs being extended between the other webs. In such machines, thecarbon paper normally remains stationary, while;

the, other webs are s'hifted,step by step, the

' length desired for successive sheets of writing; the manifold written sheets,both original and copies, beingwithdrawn, together, from between the carbon webs, and torn off their webs, thus leaving successive blank por- 2 tions of the latter extending between the carbon web s. .The carbon webs may remain sta-.

tionary until the used portion thereof is worn out; whereupon, the carbon webs may be intermittently progressed'to, present un- -g5 used portions thereof overthe platen; and

bet-ween the other webs.

It has been found in practice that the stresses from the type impacts upon such transfer webs rupture the latter and render them worthless, before the transfer coating thereof has been used to the greatest possible extent. In other words; the life of such transfer webs would be very much longer if the paper element thereofwere as durable as the carbon coating thereon.

. Therefore, it is the obect and effect of my invention. to lengthen the normallife of transfer webs, and particularly of the manifold type aforesaid, byinterposing, parallel with the transfer web, what I shall hereinafter term a shield web; having the function and effect of minimizing the stresses imposed upon thetransfer Websby the, type'impacts; so as to render the transfer webs abnormally durable, and at least as durable as the transfer coating thereon, and thus lessen the cost of transfer webs for a given number of'typewritten impressions thereon.

In the form of my invention hereinafter described; the shield web is a primarily plane,

coag'ulated, gelatinous, amorphous, film ,of artificialcellulose, such as may be produced by coagulating or precipitating viscose,- (liquid .cellulose sulpho-carbonate or thiocarbonate) or other suitable cellulose solu tion; for instance, nitro-cellulose; or cellulose dissolved in ammoniacal copper oxide; or in zinc chloride; or acetic anhydride, etc.

My invention includes the various novell features of construction, arrangement and m prgcedure hereinafter more definitely speci-; V

e Y v x In said drawings: Fig. I is a diagrammatic plan view of manifold transfer webs arranged transversely to and in coordinate relation with, webs. of paper which .areto be written upon, being typical of the arrangement of such webs in a plane platentypewriting machine of the character abovecontemplated.

Fig. II is an elevation of said webs as see from the lower edge of Fig. I. 5 v a I Fig. III is a View similar ,to Fig. II,'but showing a modified form of my invention. r In said figures; '1 indicatesra commercial manifold vroll of carbon paper which, for the Elliott-Fisher machine, is wound involutely upon a core 2 having rectangular sockets 3 in the opposite ends thereoffor engagement with a square shaft or shafts at by which, a the roll may be turned Said roll is conveniently disposed at theright hand side of the machine,.and a similar core 6, fitted upon the square shaft 7, is arranged at the left hand side of the machine, so that the worn carbon webs may be intermittently wound thereon in a tape-up roll 9 and bethus withdraw from the supply roll 1 on the core 2. As indicated in Fig. II said manifold, transfer webroll 1 includessixwebs 8; which 5 i may befordinary carbon paper, to wit, webs of tissue paper coated, upon their inner faces, which are presented downward in Fig.II, with what is known as carbon dope, i. e., a mixture of powdered carbon'and a waxy maa terial, for instance, carnauba wax, mixed with vaseline. The shield web 10, of the same dimensions' as the transfer webs 8, is wound therewith on said core 2, so as to be presented at the outer surfaceof the roll 1; thus being 1 1110 j v a m bystep, as above-contemplated.

presenteddirectly beneath the'to p 'web 12 t which is to receive the ribbon imprint in the 1 series of seven; webs 12 to 18 inclusive, of

whichthewebs 13 to18 inclusive are to receive transfer impressions, and; all of which [areprimarilywound in the manifold roll 20 supportedupontheshaft2l and arranged c to beintermittently shifted in the direction, 7 I of the: arrow marked thereonin Fig.1; said 7 *web'sll2to 18 inclusive beingwithdrawn, step As above noted; said shield webllO'ispreferab ly a thin film of artificial cellulose and,

V if of the grade of artificial cellulose known r morethanlOO5 of an inch thick; which'thi'cknessisknown commercially as Ne. 300. Such a shield, web is not ion-1y more durable than commercially as cellophanefneed' not be any fc'arbonpaper web, but far moredurable than any paper web'ofany {kind thin enough to be capable -?of: transmitting a type impresr S1011}, V .7

In the fe'rm--*of my invention shown in i l Figsq'land 11; the shield web being "coextensive with thegtransfer web's 8, is shifted with the latter to the take-up r0119 at intervals determined by the depletion of the'transfer material from the transfer webs 8. Such such movement ofithe transferwebs, of course simultaneously removes theipbrtion of the depletion occurs while the shield web 10 remains intact andicapab le "of further use; but

shield web :10C01H0lding with the worn and discarded portiongof the transfer webs 8; so that the shield; web 1O lisfnotthufs useda's economically fasisit might be. (Therefore, I

have shown, in-FigIJI-ILHa shield web -22,

which is a plane sheet stretched between opposite supports -123; which may be parallel spring clips by which said shield web is reinovably :held stationary beneath the web 25 uponwhich the ribbon copyimprint is to be made, and over-thetopiof the transfer web 26 which extendsfabove the web 27 upon which the transferiimprint is to be made. In such arrangement; thewshield webi22may be used until it v isflworn out, regard1es s :ofthe du-' rability of the transfer web 26 which is used in cooperative relation therewith.

Of course, in an rordlnary typewritin'g ma .chine, a shield web may be interposed bei V tween 'the sheet which. isto bear the ribbon imprint and the first carbon jpaper sheet which i'scto' transfer such imprint; form any othensituati-on where such shield web may. serveto prolong the iifeof atransfer' web. 7 However, said artificial cellulose web is far more costlythanfany paperybeing $1.25 per pound in "fiOQ -pounid lots and, therefore, in any embodiment ofimy invention it is desirable to havetheshield web. independent of the web or webs which it is to'protect; so as to minimize the quantity oftheshield materialuused with respect to the quantityof the transfer webs used therewith.

Therefore, I do not desire tolimit myself to the precise details of construction and arrangementherein set forth, as it is obvious that'various modifications may be made there- 'in without departing from the essential feai Qf myinvention, as defined in the appended claims. i

I claim: 7 v 1. The combination with a transfer web, h v g a manger material arranged. to be detached therefrom by impact on said web;

,of-a flexibleshield lweb immediately adjacent to said transfer web and formed of an amor- -;phous fabric moredurable than said web, or

any paper thin enough to be capable of transmitting a legible T type impression, and arranged to resist destructive wear upon said transfer web; the transfer web 'beingindependentof the shield web, and movable'relato said transfer web and formedof an amor- 7 phone fabric more durable'than said web, or

7 any paper thin enough to be capable of trans mitting a legible-type impression, and arranged to resist destructive wear upon said transfer web; including means arranged to' hold the shield web stationary, while moving the webs :of carbon paper relatively thereto. e

. The combination with a transfer web,

havinga coating of material arranged to be detached therefrom by impact on said web; of a flexible shield web immediatelyadjacent .to :said transfer web and formed of an amorphous fabric more durable than said web, or anypaperthin enough to be capable of traiismitting a legible type impression, and arranged to resist destructive wear upon said trans-fer web; including :means arranged to hold the shield web stationary, whilemov-l ing the webs of carbon paper relatively thereto, including opposite stationary sup ports between which said shield web "is stretched; axial cores, .at respectively opposite ends'of said carbon webs, and meansarranged to rotate said cores to unwind said carbon websfrom one core and wind them upon theother; t

4; The combination witha transfer web, having a coating of material arranged .to be detached'therefrom by impact .onsaid web; 1 of a flexible shield web immediately adjacent to saidtransfer web and formed of an amorphous fabric more durable than said web,

or any paper thin enough to be capable of transmitting a legible type impression, and arranged to resist destructive wear upon said transfer web; including opposite stationary supports and spring means connected therewith adapted to hold said shield web stretched between said supports'in stationary position.

5. The combination with a transfer web,

having a coating of material arranged to be detached therefrom by impact on said web; of a flexible shield Web immediately adjacent to said transfer web and formed of an amorphous fabric more durable than said web, or

any paper thin enough to be capable of transmitting a legible type impression, and arranged to resist destructive wear upon said transfer web; including a stationary support and means arranged to detachably hold said shield web stationary on said support, during the relative movement of the carbon paper. In testimony whereof, I have hereunto v signed my name atBurlington, New Jersey this 26th day of April, 1927.

SAMUEL A. NEIDICH.

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