US1243942A - Paper-supply attachment for type-writers. - Google Patents

Description

L. JENSEN.

PAPER SUPPLY ATTACHMENT FOR TYPE WRITERS. APPLICATION FILED JAN-31.1916.

1,243,942. Patented Oct. 23,1917.

4 SHEETS-SHEET I.

L. JENSEN.

PAPER SUPPLY ATTACHMENT FOR TYPEwmTERs. APPLICATION .FILED JAN. 31. 1916.

1,243,942.. Patented 00$. 23,1917.

4 SHEETS-SHEET 2.

Z Julian/Z317 L.JENSEN. PAPER SUPPLY ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED JAN. 3|. I916.

Patented Oct, 23,1917.-

4 SHEETS-SHEET 3.

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L. JENSEN. PAPER S UPPL'Y ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED JAN- 31, T916- 1 ,Q%3,9 Patented Oct; 23, 1917.

4 SHEETS-"SHEETv 4.

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LOUIS JENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR T0 UNITED AUTOGRAPI-IIG REGISTER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIQN OF ILLINOIS.

PAPER-S'UYPLY ATTACHMENT FOB TYPE-WRITERS.

Specification of Letters Patent.

Patented 0st. 23, 191 '1.

Application filed January 31, 1916. Serial No. 75,273.

To all whom it may concern:

Be it known that I, LoUIs JENSEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new' and useful'Improvements in Paper-Supply Attachments for Type-Writers, of which the following is a full, clear, and exact description.

My invention relates to improvements in attachments used in connection with typewriting machines for supplying a continuous web of paper to the platen carried by the reciprocable carriage, and particularly to the attachments for which Letters Patent of the United States were ranted to E. J. Barker, May 25,1915, 0; 1,140,493, and which maintains a hanging slack portion of the continuous web.

In the attachments covered by said patent the motion of the platen was transmitted to the supply-rollers for maintaining the slack of paper fed thereto by mechanism that was carried by and added considerable weight to the carriage of the typewriter and was directly and permanently connected to transmission devices which included parts that had to be pulled along by and reciprocated synchronously with said carriage.

The principal object of my present invention is to materially reduce the comparatively great weight heretofore placed upon and carried by the carriage, and to absolutely remove the resistance to its movement by the above mentioned synchronously movable parts. It is a further object of my invention to provide means for adjusting the relative movements of the platen and said supply-rollers. These and other objects I accomplish by the means hereinafter fully described, and as particularly pointed out in the claims.

In the drawings: I

Figure 1 is aplan view of a typewriting machine and its support to which my improvements are applied.

Fig. 2 is a rear elevation thereof with the lower portion of said support broken away.

Fig. 3 is a side elevation of said typewrit-- ing machine and a portion of its support with the ink ribbon-reels and mechanism for actuating the same ehmmated.

Fig. 4 is a perspective view of the carriage shifting lever and mechanism actuated thereby for rotating the platen and transmitting motion to the supply-rollers, detached from the machine.

Fig. 5 is a transverse section of the platen removed from the machine, and taken on dotted line 5-5, Fig. 1.

Fig.6 is a horizontal section of a portion of said machine, taken on dotted line 6, 6, Fig. 8, looking in the direction indicated by the arrows.

Fig. 7 is a vertical longitudinal section of a portion of said machine taken on dotted line 7-7, Fig. 2, and showing the supplya roller mechanism in side elevation.

Fig; 8 is a detail View showing mechanism for adjusting the throw of the devices for rotating the supply-rollers.

Fig. 9 is a detail view of a fragment of said improved machine.

Referring to the drawings, A represents the stationary supporting-frame of a typewriting machine of any suitable design, and B represents the transversely reciprocable carriage in the side-frames of which a platen C is. journaled. The journal X of this platen at its right hand end extends through its bearings and has a ratchet c securely mounted thereon, and immediately next this ratchet c,- it has an arm a pivotally mounted thereon which projects upward and forward slightly." This arm is provided with a downward extension 6 below its pivot, and the lower end edge of this extension terminates below the peripher of ratchet c, and is, referably, made to escribe a curve struck rom the center of its pivot, or from a center slightly oflset therefrom, substantially as shown in Fig. 5 of the drawings.

Immediately next this arm a a bell-crank v and fastened to the stud upon which the pawl is pivoted and the other end of which forward movement extends to and bears upward against a pin 9. The bel -crank constitutes the, medium through which reciprocable motion is im parted to the pawl, and the throw of this reciprocal movement is such that the point of the pawl as it approaches the limit of its curved edge of extension I) and engage the teeth of pawl e, and by adjusting the rotatable movement of arm a said pawl will, during its forward movement, pass beyond the edge of the extension and. engage the teeth of ratchet c and impart a greater or less degree of circular movement thereto and thus turn the platen to obtain the space between the lines of the typewritten matter desiredo The bell-crank has its rear uppermost angle to the end of a rocking-bar E, which is securely mounted at a suitable point between its ends upon the rear end of a superposed horizontal rockshatt ll, the axis of which is substantially at right angles to the axis of the platen. This rock-shaft, which is present in mosttypewriting machines, and is. usually used at the end of the right hand reciprocal throw of the carriage to impart the necessary movement of the platen to advance the paper, and at the same time move the carriage back to the right hand throw of its reciprocation, is journaled insuitable bearing G, Which latter may be of any desired construction and permanently secured to the side-frame of the carriage in some man-- ner or other. The forward end of this rockshaft extends beyond its bearings a suitable distance and is usually bent downward. to form a hand-grasp for the operator, an is usually termed the spacing-lever.

The end of rocking-bar 1E opposite link D is connected, through the medium of a link H to the adjacent forward extension 10 of one of the parallel end members 12 of a horizontal pressure-bar 13, which latter extends parallel to the platen at the rear of the carriage, and from end to end of the same, and has its parallel end members 12 extend forward and suitably secured to the ends of a rock-shaft let journaled in the ends of the side-frames of the carriage. When rock-shaft F is rocked, rocking-bar E thereon pushes extension 10 of the adjacent end member 12 upward through the medium of link H, and the pressure-bar'ld moves downward and engages an anti-triction roller 17 journaled on a stud projecting forward from the end of one branch of the rocking-beam l5.

Rocking-beam 15 is arranged in the direction of length of the pressure-bar, and it is fulcrumed mediate its ends to the upper end of a stationary standard 16 that is secured to and arises from the rear of supportingframe A of the machine, The branch of will ride beyond the a link D connecting naaaeea this rocking-beam carrying the anti-friction roller 17 is kept normally pressing upward toward the pressure-bar 13 by means of a spring 18 that has one end permanently secured to standard 16 and its opposite end bearing upward against theunderside or said branch of the rocking-beam. The end of the rocking-beam opposite roller 16 is connected by means of a depending connecting-rod 19 to the pivotal pin 21 of a pawl 20, and this pivotal pm 21 projects laterally from an arm 22, the opposite end of which isloosely mounted on the extended and oil a journal 23 of a feed-roller2d, which latter has bearings in the ends of hangers 25 secured to and extending rearwardly from. the ends of a rock-shaft 26 that is journaled in suitable bearings in the overhang 2*? projecting rearwardly from the upper ends of parallel upright- members 28, 28, of the rackframe, in the rearwardly and downwardly projecting brackets 29 of which the paperrolls 30 are journaled from which the paper 1s supplied to the platen.

Shaft 26 extends parallel to the axis of feed-roller 24:, and when pawl 20 is given an upward movement by connectin rod 19 the outer pointed end of saidpawl engages a ratchet 31, which latter is securely mounted upon the adjacent extended end of the jour nal of roller 2%, and moves said roller Roller 24 has-its central portion slightly increased in diameter and knurled, and this knurled portion engages a superposed feedroller 32, whose ends are j ournaled in brackets 33 that are secured to or made integral with the rear portion of overhang of uprights 28 of the rack-frame.

lldtl There are usually several rolls of paper 30 ournaled in the rack-frame, and the Webs thereof. are run upward to and between feedrollers 2d and 32, and in order to facilitate the separation of the lower roller 24 from the upper roller 52, when it is desired to thread the webs of paper from rolls 30 between them, T have provided a rock-shaft 34 which is parallel to rock-shaft 26 and'is,

journaled in the overhangs 27 of the rack. One extended end of shaft 34- has a crank 35 secured thereto, and the opposite extended end of this shaft 34: is provided with a symmetrical pear-shaped cam 36, substantially as shown in Fig. 3 of the drawings. This cam engages the under upwardly inclined edge of a forward extension 3'7 of the 25 and roller 24 being normally naaaeaa shaft 26 and having one end securely fastened to this shaft and its opposite end movably retained against shaft 34.

The end of the journal of roller 23 oppo site ratchet 31 extends through its bearings naled in a hanger 42 depending from the underside of the top 43 of the table upon which the stationary frame of the typewriting machine is mounted. These portions 40 and 4:1 and their associated parts afi'ord a means whereby the paper may be manually caused to be unwound from their rolls to produce the required slack between them and the platen.

In order to regulate the throw of connecting-rod 19 and the movement of supplyroller 24 actuated thereby, T-have provided means that engage the underside of the branch of rocking-beam 15 opposite that in. which the antid riction wheel 17 is journaled, and limit the downward movement thereof. These means comprise a segmental gage-plate t4, the lower end of which is ivoted to the standard 16 at a suitable point below the fulcrum of the rocking-beam, substantially as shown in Fig. 8 of the drawings. The curvature of the upper end edge 45 of this plate is struck from a center whose radius is the same as the center of length thereof is from the pivotal pins of the gageplate, but is eccentric to said pivotal axis, so that when the gage-plate is pushed forward the upper eccentric edge thereof will push against the under edge of said branch of the rocking-beam and limit the downward movement thereof. At each end of this upper edge 45 there are upwardly projecting studs 46, 46, that limit the reciprocations of the gage-plate, and about midway its length the rear edge thereof is provided with a segmental slot 47 which is struck from its pivotal axis, and a screw 49, tapped laterally through the standard, passes through this slot and has a thumb-nut 4:8 screwed onto its'end, which is manipulated to clamp the gage-plate and retain it in any position to which it may be adjusted. For convenience in manipulating this gage-plate, I have provided it with a lug 50 pro ecting rearwardly from its rear edge, but this may be dispensed with, if desired.

What I claim as new is: p

1. The combination in a typewriting machine with the reciprocable carriage, a platen journaled therein, means for rotating said laten, a roller having stationary bearings independent of the carriage upon which a roll of paper is mounted, mechanism movable with said carria e and actuated by said means, and devices for rotating said roller that are supported independently of said carriage and are depressed'by said mechanism when said platen is rotated.

52. The combination in a typewriting ma chine with the reciprocable carriage, a platen journaled therein, means for rotating said platen, mechanism movable with said carriage and actuated by said means whereby a web of paper is fed from a roll to said platen, and devices for rotating said roll which are supported independently of and normally disconnected from said carriage and depressed by said mechanism when said platen is rotated.

3. The combination in atypewriting machine with the reciprocable carriage, a platen journaled therein, means for rotating said platen, and a pressure-bar actuated by said means, whereby a web may befed from a roll of paper journaled independently of said carriage to said platen, and devices for rotating said roll which are supported independently of said carriage but normally disconnected therefrom and are actuated by said pressure-bar when said platen is rotated.

4:. The combination in a typewriting machine with the reciprocable carriage, a platen journaled therein, means for rotating said platen, and mechanism movable with said carriage and actuated by said means, whereby a web of a roll of paper may be fed to said platen, and adjustable devices for rotating said roll which are supported independently of and normally disconnected from said carriage and depressed by said mechanism when said platen is rotated.

5. The combination in mechanism of the lrind specified with a reciprocable carriage, a platen journaled therein, means for rotating said platen, and a pressure-bar actuated by said means, whereby a web of a roll of paper journaled independently of said carriage may be fed to said platen, a rockingbeam one end of which is actuated by said pressure-bar when said platen is rotated, and

mechanism actuated by said rocking-beam for rotating said roll when the platen is ro-. tated.

6.. The combination in mechanism of the kind specified with a reciprocable carriage, a platen journaled therein, a pressure-bar extending horizontally back of and parallel to said carriage, and mechanism for simultaneously rotating said platen and depressing said bar, whereby a web of a roll of paper 'journaled independently of said can riage may be fed to said platen, and devices depressed by said bar and adapted to rotate said roll simultaneously with said platen.

7. The combination in mechanism of the kind specified with;a reciprocable carriage, a platen journaled therein, a pressure-bar extending horizontally back of and parallel to said carriage, and mechanism for simultaneously rotating said platen and depressing said bar, of means whereby a web of, a roll of paper journaled independently of said carriage may be fed to said platen, and a rocking-beam depressed by said bar, and means actuated by and adapted to rotate said roll simultaneously with said platen.

8. The combination in mechanism of the kind specified with a reciprocable carriage, a platen journaled therein, a pressure-bar extending horizontally back of and parallel to said carriage, and adjustable mechanism for simultaneously rotating said platen and depressing said bar, of means whereby a web of a roll of paper j ournaled independently of said carriage may be fed to said platen, and devices depressed b said bar and adapted to rotate said roll simultaneously with said platen.

9. The combination in mechanism of the kind specified with a reciprocable carriage, a platen journaledtherein, a pressure-bar extending horizontally back of and parallel to said carriage, and adjustable mechanism for simultaneously rotating said platen and de ressing said bar, of means whereby a we of a roll of paper journaled independently of said carriage may be fed to said platen, and adjustable devices depressed by said bar and adapted to rotate said roll simultaneously with said platen.

10. The combination in mechanism of the kind specified with a reciprocable carriage, a platen journaled therein, a pressure-bar extending horizontally back of and parallel to said carriage, and mechanism including a ratchet secured on the journal of said platen, an adjustable arm loosely mounted on said journal alongside said ratchet, and a pawl engaging the lower eccentrically curved edge of an extension of said arm as it advances to engage said ratchet for simultaneously rotating said platen and depressing said bar, and devices depressed by said bar and adapted to simultaneously feed a sheet of paper to said platen.

11. The combination in a machine of the kind specified with a reciprocable carriage, a platen journaled therein, means for rotating said platen, and a pressure-bar which is depressed when said platen is rotated, of a rocking-beam one branch of which is adapted to be engaged by said pressure bar, adjustable means "for limiting the rocking movement of said beam, a pair of feedrollers between which a web of paper passes in transit to the platen, and devices actuated by said rocking-beam for rotating said rollers.

12. The combination in a machine of the kind specified with a reciprocable carriage,

a platen journaled therein, means for rotating said platen, and a pressure-bar which is depressedwhen said platen is rotated, oi a rocking-beam one. branch or" which is naespaa adapted to be engaged by said pressure-bar, a pair of feed-rollers between which a web of paper passes in transit to the platen, and

devices actuated by said rocking-beam for rotating said rollers.

13. The combination in a machine of the kind specified with a reciprocable carriage, a platen journaled therein, means for rotating said platen, and a pressure-bar which is depressed when said platen is rotated, of a rockin beam which is adapted to be engaged by said pressure-bar when said platen is rotated, a pair of feed-rollers jonrnaled independently of said carriage one of which is adapted to be moved out of engagement with the other, means whereby a web of a roll of paper journaled independently of said platen mayextend between said rollers and from thence to said platen, and devices for imparting motion from said rockingbeam to said rollers.

14:. The combination in a machine of the kind specified. with a reciprocable carriage, a platen journaled therein, means for rotating said platen, and a pressurebar which is depressed when said platen is rotated, of a rocking-beam which is adapted to be engaged by said pressure-bar when said platen is rotated, a pair of feed-rollers journaled independently of saidcarriage, a ratchet on the journal of one of said rollers, a pawl engaging the same, a connecting-rod for transmitting the motion of said rockingbeam to said pawl, means whereby a web of a roll of paper journaled independently of said platen may extend between said rollers.

and from thence to said platen.

15. The combination in a machine ofthe 1 kind specified with a reciprocable carriage, a platen journaled therein, means for rotating said platen, and a pressure-bar which is depressed when said platen is rotated, of a rocking-beam which is adapted to be engaged by said pressure-bar when said platen is rotated, a pair offeed-rollers jonrnaled independently of said carriage, simulta neously movable hangers in which the lower roller has bearings, a ratchet on the journal of said last-mentioned roller, an arm loosely mounted thereon, a pawl pivoted to said arm and engaging said ratchet, a connecting-rod connecting said rocking-beamand pawl, means whereby a web of a roll of paper journaled independently of said carriage may extend between said rollers and,

from thence to said platen.

16. The combination in a machine of the kind specified with a reciprocable carriage, a platen j ournaled therein, means for rotating said platen, and a pressure-bar which is depressed when said platen is rotated, of a rocking-beam which is adapted to be engaged by said pressure-bar when said platen is rotated, adjustable means for limiting the rocking movement of said beam, a pair of feed-rollers journaled independently of said carriage, simultaneously movable hangers in which the lower roller has bearings, a ratchet on the journal of said last-mentioned roller,

. an arm loosely mounted thereon, a pawl pivoted to said arm and engaging said ratchet, a connecting-bar connecting said rocking-beam and pawl, means whereby a web of a roll of paper journaled independently of said carriage may extend between 10 said rollers and from thence to said platen.

In witness whereof I have hereunto set my hand this 20 day of January, 1916.

LOUIS J NSEN. Witnesses: I

. W. R. BARKER, H. P. BARKER.

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