US267967A - Polarized ink-writer - Google Patents

Description

' Patented Nov. 21, 1882.

INVENTOR Fly.

ATTORNEY UNITED STATES FPATENT OFFIQE.

FRANK vANDERSON, oEPE KsKtLL, NEW YORK, ASSIGNOR TOTHE AMERICAN RAPID TELEGRAPH COMPANY, OF ooNNEoHoUT.

POLARIZED lNK-WRITER.

SPECIFICATION forming part of Letters Patent No. 267,967, dated November 21, 1882.

Application filed December 10, 1881. (N6 model.)

. To all whom it may concern:

Be it known that I, FRANK ANDEEsoN, of

Peekskill, in the county of Westchester and mark, the other or opposite'impulse' serving.

only to withdraw the pen or stop it from marking, so that tomake, say, three dots or marks six impulses over the line would be required. Instruments have also been devised containing double pens, one of which is brought into contact with the paper by a positive and the other by a negative current, both pens, howlever,when not acted upon by the current, being drawn bacli from the paper either by gravity or a spring. In this case either one of the pens may be applied repeatedly, or they may be made to alternate with each other, but neither is appliedto the paper, except during the continuance of the impulse.

The object of my invention is to cause a marker record for each impulse, both positive and negative, thereby doubling the capacity for telegraphic characters, and to form a continuous record in which the marks in the two lines necessarily alternate with each other. The utilization of both currents in the production of arecord has already been accomplished in the chemical recorder, as shown in the patent of Foote and Randall, No. 172,409, of J anuary 18, 1876. In my invention this end is attained, in the case of a polarized ink-writer with the same system of transmission, by providing two pens or' inkwheels mounted in independent bearings, and so connected to the polarized armature of the magnet that the vibration of said armature will cause first one and then the other of the pens or wheels to be pressed against the moving strip which re ceives the record, each pen remaining upon the strip until the other is moved into contact intervals, alternate in polarity.

by an impulse of opposite polarity. By this instrument and method the length of the mark .made by the pen or wheel depends not upon the continuation of the impulse, but upon the space between the impulses.

While this ink-writer may-be used with the ordinary form of relay, in which the armature is moved one way by a spring or equivalent device, or with other forms of magnets, it is designed more especially to be used in connec tion with a system of transmission in which all impulses, whether they occur at great or small This is now accomplished by the chemical method; but by my invention 1 accomplish the same results without the use of the chemically-prepared paper, which needs to be kept damp in order to secure'any result.

The accompanying drawings and description ,hereinafter given show a device embodying my invention, in which- Figure 1 is a perspective view of the instrument with the paper strip and devices for moving the same removed. Fig. 2 is a plan of part of the same. Fig. 3 is an elevation of same, showing paper, Sac. Fig. 4: is a top view of magnet and armature. Fig. 5 is a side elevation of the same, with ink-wheels or pens. Fig. 6 represents a modification of the device for moving the wheels or pens. Fig. 7 shows the record upon'a fillet.

The polarized ink-writer-a well-known device-is made by attaching a pen or ink-wheel to the armature of a polarized relay, so that the action of the latter pushes the pen or wheel alternately against and away from a. moving strip of paper.

In carrying out my invention, instead of one wheel or pen I 'use two, marked E E. (Shown in Figs. 2, 3, and 5 as placed side by side on independent arms or levers f f.) These levers are pivoted at the-points e c, and are made as light as possible. Fixed to these levers, and extending downward from the fulcrum or pivots e, are arms 0 c, which form, with levers f f, 5

bell-crank levers, and engage at their lower ends with notches 0 c in the cross-piece d, which is attached to the armature A, so that longitudinal movement of the cross-piece will rock the levers on pivots e c and raise or lower IOO the wheels or pens E E. This movement of the cross-piece is caused by its connection with the armature, which has sufficient space therefor between the extension-pieces b b of the 7 cores 1) b, which pieces are practically a divided end of the permanent magnet, when the cores are not under the influence of the current.

A modification of the devices for operating the wheels is shown in Fig. 6, in which a repre-' sen ts a rea r prolongation of the armature, forming an arm (made as light as possible) which carries one of the wheels E. The other-(marked in this figure E) is carried on a short arm, n, which is pivoted on a fixed standard by the side of the arm n. A pin, 00, connects the two arms 12 and n, and the vibration of the armature moves the wheels or pens simultaneously in opposite directions.

In the drawings the armature is represented as midway between the poles b b, and theinkwheels as even in height with each other. It is apparent that as the armature nears one of the poles one of the pens or wheels is depressed while the other is raised.

F represents the paper on which the record is made. It is caused to move over the roller G, which isnear enough to the pens to allow one of them to touch it when the armature is against either pole. Motion (by crank or clockwork) is communicated to the paper by the rotation of roller H, between which and the pressure-roller h the paper passes. The same mechanism that moves the paper can be made to revolve the ink-wheels, if desired, so as to keep a distribution of ink constantly. The wheels are partially immersed in a vessel, I, filled with ink.

A fountain pen or pens can be used instead of ink-wheels; or an ink-ribbon in form of a continuous band or otherwise may be substituted for the ink, in which case either sharpedged wheels or a pointed style would sufficiently mark the paper.

In the transmitted impulses which are alternate in polarity the last impulse will leave the for dashes one or two impulses are omitted in the transmitting.

It is evident that there can be no blank spaces left on the recorded strip, because one or the other of the pens will always be against the paper, and of course will mark it, so it is necessary to have a mark for the space between letters and words. By making this mark or dash longer than any dash composing a letter it may be easily recognized.

Fig. 7 shows the appearance of the record of character representing the letters S N, &c.

The mechanism for causing the alternating movement of the ink-wheels may be greatly varied without departing from the spirit of my invention. I

I am aware that instruments containing a double style or marking device have been used, as in the case of Steinheil, Wheatstones earlier devices, the English patents of 18 7, No. 3,608, and of 1869, No. 2,603; but in none of these devices were the movements of the pens necessarily of an alternating character, neither was the record of a continuous nature, as it necessarily is in my device; but the styles were so arranged that neither touched the paper when there was no current, but either could be made to touch repeatedly while the other remained statio'narya condition of things that is not possible or desirable in my, device, as I aim to produce acontinuous record, which may shift from one side to the other, but never leaves a blank space when properly operated.

Having thus described my invention, what I claim is- The combination of the levers ff, carrying wheels or pens, spring-arms c 0, bar (1, and polarized armature, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK ANDERSON.

Witnesses:

RUFUS ANDERSON GQLERIDGE A. HART.

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