US887143A - Type-writer attachment. - Google Patents

Description

PATENTED MAY 12, 1908.

J. O. STEVENSON.

TYPE WRITER ATTACHMENT.

APPLICATION FILED JULY 9. 1907.

2 SHEETS-SHEET 1.

W1 rlwas's s m5 QS ZQVQZSOIZ j/Vi ENTOR 14 TTOR/VE Y5 i No, 887,143. PATENTED MAY 12, 1908.

L0. STEVENSON.

TYPE WRITER ATTACHMENT.

APPLICATION FILED JULYB, 1907.

% && F By ///I/ r/ A TTORNE VS 2 SHEETS-SHEET 2. Q

' Oklahoma, in the county of Oklahoma, Oklafor a paper web which will be arranged exterior to the carbon band.

cause of a multiplicity of papers, since with is made to travel with the platen about the latter and over said spool.

also carry at each end extensible supports initial carrying reel for a long web of paper JAMES O. STEVENSON, OF

' STATES OKLAHOMA, OKLAHOMA.

TYPE-WRITER ATTACBZMENT.

Specification of Letters Patent.

Patented. May 12, 1908.

Application filed July 9, 1907. Serial No. 582,840.

To all whom it may concern:

Be it known that I, JAMES O. STEVENSON, a citizen of the United States, residing at homa, have invented a new and useful Type- VVriter Attachment, of which the following is a specification.

This invention has reference to improvements in typewriter attachments, and its object is to provide means whereby multiple copies of typewritten matter may be produced upon along web of paper through the intermediary of an endless carbon band or ribbon, so that copies of many papers may be made without danger of losing the same bethe present invention copies of a great many papers may be made seriatim upon 'a single web whiclrmay be preserved for future reference. V

The present invention is for an attachment to take the place of separate carbon sheets and separate second sheets, thus economizing in the time usually taken to arrange sheets for each page written. The attachment also assures a copy of all matter passing through the machine, since the copies are made upon a continuous roll of paper so that there is no possibility of losing any part of the copy ofthe original matter.

The present invention is applicable to various types of machines and comprises essentially two standards, one at each end of the platen-carrying frame or carriage, together with a spool for the support of'one end of an endless band of carbon paper or ribbon which The standards for two. reels, one of'which constitutes the and the other of which constitutes. the replaten and the 'carbon web. When desired,.

the standards may carry another pair of reels The attachment is so arranged that it will not interfere in any way with the ordinary use of the typewriter for making original copies, and when one carbon copy is desired the carbon paper or band will be coated on but one side and the inner band of p'aperwill be employed, thus giving one straight carbon copy upon the paper Web. When, however,

two copies are desired, the outer web of paper fromthe following detailed description, taken,

in connection with the accompanying draw-. ings forming part of this specification, in which*,

' Figure 1 is a vertical section, through the typewriter platen, showing. the attachment 1n operative relation thereto; Fig. 2 is a front elevation; Figs. 3, 4 and 5 are detail views; and Fig. 6 is a cross section on the line 66 of Fig. 4.

Referring to the drawings, there is shown a platen 1 mounted in the usual manner upon a carriage 2, of which only the side-bars are shown but which may be taken as indicative of any style of typewriter carriage.

Fast upon the side bars 2 are brackets 3 which may, if desired, remain upon the car.- riage when the other portions of the structure are removed. 'Each bracket 3 terminates in a central, radially-upward projecting car 4, to which is fixed astandard or post'5 by means of a pivot pin 6 proj ecting, from the lower end of the standard 5 through the ear l and receiving a wing nut 7 or any other type of thumb-nut,

. The upper ends ofthe standards 5 receive pintles 8 formed on the ends of a rod 9, which rod carri s flange collars-10. The pintles 8 may be each provided with a circumferential groove 11 within its bearing in the standard 5, and a set-screw 12-extending through the upper end of the bearing and engaging in said groove willserve to hold the standards 5 from ture does not interfere in any manner with the rotation of the rod 9.

spreading, and at the same time this 'struc- Passing over the rod 9 between the flange.

collars 10 .is a web 13, which Webalso eX- tends around the platen 1.' This'web may be made of any suitable material capable of carrying the substances used for producing the so-called carbon copies upon pa er, and,

if desired, this web may be made 0 the carbon paper of the market and maybe applied by being assed around the laten and rod 9 between t e collars 10, and t e two ends may be united in any suitable manner, as, for instance, by pasting, so as'to form a continuone web. y

Upon the inner face of each standard 5 are two dovetail cross slots 1'415, one quite close tothe lower end of thestandard and the other near the upper end thereof. The' dovetail slot 14 receives the dovetailsection 16 of a bar composed of two members 1718. The member 17 is provided with a longitudinal slot' 19 receiving a tongue 20 on the other member. onal or other suitable shape, sov that one member can not turn with relation to the other, butis still free to telescope therein. Between the end of the tongue 20 and the base of the recess or slot 19 there is housed a spring 21 the tendency of which is to force t e member 18 away from the member; 17,-

but in order that this movement may be so limited as to not entirely separate the two 4 members of the bar the member 17 may be ical studs 24 at the corresponding ends of the bars will constitute journal bearings for the spindle 25 and those at the other ends of the bars'will constitute journal bearin s forthe spindle 26, thebearings being of tie needle or point type,- oifering but slight friction to the rotative movement of the spindle.

The reel spindle 25 will constitute the carrier for the unused web 27 of paper, which web is carried down alongside. the carbon paper betweenthe latter and the platen and thence upward until its end is secured to the reel spindle 26. N ow,'when the carbon web is in place it does not fit tightly upon the platen 1 before the paper roll has been attached, but as soon as the paper rollwith its supportin bars 1718 is in place, the tendency of t e springs 21 being to force-the spindles 25 and 26 away from each other, t e carbon paper will be put under sufficient tension to bring the paper web 27 into good frictional contact with the carbon paper and with the platen 1.

When a sheet of paper is placed in the typewriting machine in position to be acted 'upon by thetfipe in the usual manner the paper feed Wi cause the rotation of the platen and at the same time the paper' web 27 and the carbon paper 13 will be caused to a travel with said p aten. The frictional en-.

, ga ement of the platen with the paper web Wil cause the unwinding of the latter from the roll carried by the reel spindle 25 and coincidently the frictional contact of the traveling band 13 of carbon paper will act upon I The tongue maybe of heXagthen the reels Web 27 of the original imprints made by the of copiesupon the typewriting machine; that is, for each sue- I cess'lve page of original typewritten matter there W1 1 be acorresponding copy upon the web, and these copies will follow one another 1n regular order.

When the pa er web upon the reel, 25 is exhausted and al wound up upon the reel 26, 25 and 26 may be removed from the typewriter and a charged reel put in the place of the reel 25, which latter, being empty, may replace theremoved reel 26.

Now, in order to facilitate the removal of the reels and the placingof other reels in posi tion, theends of the two members 1 718 :carrymg the studs 24 are made separate fromthe main portion of said members and are united thereto by hinges 28, while a sliding plate 29 carried by the hinged portion of each member and capable of being moved into and out of operative relation to the body portions of the members 1718 is provided for locking these hinged portions in place or for so unlocking them that they'may be turned on their hinges. For this purpose there is provided a threaded pin 30 extending through the'hinged portion and through the sliding plate 29, and a thumb-nut 31 serves to clamp or loosen the sliding plate 29 in its operative or inoperative position. It is only necessary that one of the bars 17-18 be hinged and the other one may be solid or unbroken except thatit should be telescoping.

As the paper is unrolled from the reel @25 the paper'web thereon becomes, of course, of

constantly decreasing diameter, while the paperweb on the reel 26 is constantly increasing in diameter. This would cause a shifting of the carbon web laterally were it not for the fact that each bar 1718 is capable of inov-.

ing longitudinally in the dovetail slot 14, and, therefore, this portion of the device is self-adjusting to the varyin diameters of the paper web roll upon the ree s 25 and 26.

Fitted to the slots 15 are other bars 32, one

-of which may have hinged sections like the bars 1718 already described,-and-both of the bars 32 may be telescoping. The bars 32 carry reels 33 and 34 similar to the'reels 25 and 26 and when in place the paper web 37 carried upon the reel 33 is passed around the platen outside of'the carbon web13 until it is wound upon the reel 34. carbon web should be coated on both sides, while the paper web 37 is made of a specially In this case the.

.mitted light.

thin paper, since the impressions received from-the carbon web 13 are in reverse, and, consequently, can be best read by trans- The feeding of the paper web 37 is accomplished by its frictional contact with the carbon web 1-3. The bars 3'2 may be made quite similar to the bars 17 18 but.

they have interposed between them a spring 38'which is put under stress by beingeX- tended so as to tend to draw the reels 33+34 toward each other.

Since it issometimes desirable to tear off from the web 37 the second carbon copy in order that it may accompany the original,

there is provided a bar 39 extending across the front of the platen a short distance above the same, and this bar may he supported by side arms-40 fast to the standards by the same bolts 6 which secure said standards to" the brackets 3, or-other means maybe provided for this purpose. The-bar 39 may lave its upper edge 41 properly shaped to' (form a tearing edge: The original copy and.

the web 37 are'carried up between the bar 39 and the carbon copy, and when tlie'original letter is finished they. may be drawn together until the original letter has passed the edge 41, when the portion of the web 37 containing the carbon copy may be easily torn from the main body of the web instead of passing to the reel 34. This will mean that the roll of paper upon the reel 33 decreases in diameter without a corresponding increase in di ameter of the-roll o'fpaper upon the reel 34 Now, in order that the carbon web 13 may not become loose because of the fact that the reel 34 carries no paper, the spring 38 comes into action and will draw tlie'two'reels to-' gather, thus taking up any slack that inightj otherwise occur in the carbon web 13. When the paper web 37 is allowed to wind uponthe reel 34 the/two parts of the bars 32inay be secured together to operat'e as thoughthe bar' were solid by means of a clamp '"screw 42 which may be so arranged as .to bind the, two

members of the bar-32' in fixed relation one to the other, thereby putting-the spring 38 out of action. When the carbon 'copies'formed on the web 37 are not to be torn off the bars 32 may be made solid, in which case the telescoping action of the bars'-17-'18' will be sufficient to maintain the carbon web 13 in a taut condition. The web 37 is only used when it is desired to make more than one carhon copy of the'original writing, and where only one carbon copy is desired a carbon web coated on one-side only is all that is necessary. v

p ()n typewriting machines where the vpaper is easily detached .the carbon web may be made endless, but on other machines 'it is necessary to join the ends after having been placed in position, and this may be done by a narrow layer of a suitable mucilaginons sub.-

stance.

It will'be-observed that the standards 5,are supported at theirulower ends upon the pins or studs 6 and are held iii place-by the clamp nuts 7. It is therefore possible to swing the standards 5 about'the studs 6 as an axis,

removed from the typewriter carriage.

endless transferv band also embracingsaid platen, and telesco ingspringeactuated supports mounted in the standards and adaptedto receive paper web supporting and-winding reels on the two ends of the supports.

l 2. A typewriter attachment comprising end standards adapted to' be secured to a typewriter carriage at' the two ends of the platen, a rotatable bar joining the upperends of, the standards, and a pair of. telescoping springsactuated longitudirially-slidable bars iorsu'pport's mounted one in eachstandard and. each having journal bearings for paperweb reels. a

l 3.- A typewriter attachment comprising end standards adapted to be secured 'to a "typewriter carriageat the two ends of the platen,. a-'rotatable barjoining the upper ends of the standards, and a pair of-telescoping spring-actuated longitudinally-slida'ble bars or supports mounted one in each standard and each having journal hearings for paper webreelajone-of said bars or supports having its ends hinged to the main body thereof'a-nd provided with lugsfor holding said ends'rigid with-thebars.

,4. A typewriter. attachment comprising end standards adapted to be attached to a typewriter carriage at the ends of-the platen, arotatable rod connectingv the free ends of said-standards and adapted to support an endless web of impression material also passing around the platen, telescoping springactuated laterally-movable bars carried, by said standards and adapted to receive the supporting reelsi of a paper web interior to the web. of impression material, and other bars carriediby the standards and adapted to receive and support the reels of a paper web exterior to the web of impression material.

5 A typewriter attachment comprising.

end standards arranged to be secured to a typewriter carriage at the ends of the platen,

- a rotatable b'ar connecting the free ends of the standards and carrying flange collars, said bar and platen being adaptedto receive anendless web of impression transfer material, telescoping fspring-actuated 10n, ;itudinallypression web,and other longitudinally-slid slidable bars mnimted in ach standard, one In te stimony thaf'Iclaini the foregoing as of said bars having hinged --ends and lockmy own, I have heretoza ffixed my signature 10-.

members therefor, the send bars. cofip'erating in the presence of twqwitnesses. to support paper-web reels within the im- J O STEVENSON- 111g bars 'mbunted in the standards and 00 Witnesse'si I v actingjo support paper-web reels-exterior to A. W. MCKEANE,

-the in'lpresslon web.

STEPHEN BRowNE;

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