Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1550048 A
Publication typeGrant
Publication dateAug 18, 1925
Filing dateJun 17, 1922
Priority dateJun 17, 1922
Publication numberUS 1550048 A, US 1550048A, US-A-1550048, US1550048 A, US1550048A
InventorsSamuel Ruben
Original AssigneeSamuel Ruben
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for recording electrical signals
US 1550048 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aug. 18. 1925. 1,550,048

s RUBEN APPARATUS FOR RECORDING ELECTRICAL SIGNALS Filed June 17, 1922 11 c |||||l llllllllll r INVENTQR ATTORNEY tus Patented A... '18, 1925.


sweat nunnnpor new roan, n. Y.


Application file c1 June 17, 1922. Serial No. 569,093.

To all whom it may concern:

graphic signals into permanent, visible impresslons upon a fluid absorbing surface.

Its object is to provide a simple and eflicient means of translating received electrical impulse signals into permanently recorded readable symbols.

The apparatusconsists broadly, of a device similarto a pen, equipped with two opposing electrodes, such as a penpoint and another metal point located adjacent to the point of the pen with suitable conductive leads to terminals 'to-be connected in an electrical circuit, and means of discharging from one of the electrodes a fluid, through which, under the control of received electrical impulse signals, current is discharged between the electrodes, the fluid being electrochemically responsive by color change, in its path upon the surface upon which it is impressed.

Its operation is based upon the known fact that in certain solutions, such as potassiuln-iodide, when subjected to an electrical discharge, an electrochemical reaction occurs, changing them from practically colorless substances to those having prononnced colors. This reaction has been utilized inv recording telegraph signals, the most common practice being to saturate the paper in the form of a strip, in a solution of potassium-iodide and pass it between two electrodes, between which the electrical impulse signalsare discharged. At those intervals in the strip passing during the discharges, permanent dark colored sectionsof the chemically changed solution are recorded, corresponding to such discharges. This apparais not readily'portable and the strips mustibe constantly saturated to. be useful.

In accordance with this invention, the apparatus comprises a fluid carrier, similar to a pen, carrying a solution of potassiumio'dide, or the like, the n point acting as an electrode, the o posing electrodebeing conveniently locate so that current discharging between the two electrodes, passes through the fluid delivered from its source, at the impression surface. Suitable means are provided for connecting the electrodes to a radio or telegraph line receiving circuit.

As the apparatus passes across a paper or otherimpression surface, or if it is placed in a fixed position and a similar surface passed in contact with it, the fluid therefrom is impressed upon the surface, and the current discharging between the electrodes, in response to incoming signal impulses, changes the fluid from a practically colorless material at the positive electrode, to a dark line on the surface. If the current flows in the form-of pulsations, as in telegraph signals, as the electrode passes across the surface, the pulsations are indicated by the short and long line equivalents of the telegraph dots and dashes. Both electrodes must be in contact with the fluid, preferably in its path on the surface. But if it isdesired to decrease the surface friction, one of the electrodes can be raised slightly above the surface, so long as'it remains in contact with the fluid. By this method of recording, the recording medium is supplied in a moist condition as required.

In order to afford a full understanding of the principles of the invention, one. embodiment of the apparatus in an especially desirable practical form, is illustrated in the accompanying drawings, andis hereinafter described indetail for the sake of a concrete illustrative example; but it is to beunderstood that the invention is not limited to theparticular arrangement or specific type. 0 apparatus.

Referring to the drawings, Fig. 1 shows one form ofthe apparatus with the wires and terminals for connecting the electrodes in -a receiving circuit.

Fig. 2 is a diagram showing the same form of apparatus as a part of a radio receiv ng circult.

Referring to Fig. 1, at 1 is a pen point as an electrode .connected by wire 5 to one of the terminals 7, and at 2 is placed the opposing electrode, connected by wire 6to the other terminal at. 7 for connection in a receiving circuit. '1 At 3 is-one end of a fountain. pen, in which the pen point is inserted,

and having a hole through it affording a from the'fluid reservoir, along the v passage pen point. .sented by 4.

- I Referri he wall of the pen repreng to Fig. 2, 5 "and ,6 mpresentpthe lead wires from the fountain pen recorder, connected with the terminals of a radio receiving circuit, and with a vacuum tube amplifier 10, and the input terminals of a transformer -8, connected in a commonly ,known form of receiving circuit in which by a moist line of such a solution as'po- I tassium-iodide,

traced by the pen drawn across the surface. An electrochemical re action will thenoocur in the line so traced, changing it from an almost colorless one to a dark brown line which will continue so ;long as the pen is propelled and the fluid flowing and the current discharging be tween the electrodes. If'the current discharge is interrupted, the dark line is interrupted, the colorless line displacing, or rather, succeeding it.

When the grid in tube 10 is charged negatively by battery 13, it will electrostatically oppose the electron current through the vacuous space between the-electron emission element and the plate in tube 10. The potential is so adjusted that normally no current, or an amount insufficient to effect the chemical reaction, will flow through the tube, that then, as the pen is passed across the paper surface, only the colorless line ap pears.

If now a positive potential is applied to the grid circuit, as from the transformer 8,

trode in said circuit, and

and therefore through the circuit, so'

it will neutralize the n ative effect in the grid, and a current will ow in the tube and pen circuit, permitting a recurrence of the electrochemical reaction in the potassiumiodide.

As the primary is connected in an electrical circuit, such as a radio receiving circuit, electrical impulses discharged through the primary will be transferred to the secondary, and when in a positive direction, will cause a flow of current through the circuit when the pen is passed across the surface, affording a path thereon for the discharge, causing an electrochemical reaction in the path of the moist potassium-iodide. Dots and dashes of the signal code will thus ocour in the fluid line, directly in response to such signal impulses, yielding a permanent record of incoming messages. To record signals at higher speeds, it is necessary merely to pass the pen over the impression surface at higher speed.

VVha-t I claim is,

In combination with a self-feeding pen adapted to contain an electro-chemically responsive color-changing liquid and having an electrically conducting pen point adapted to discharge said liquid upon a contacting surface and to be connected as an electrode in an electrical circuit, another electrically conducting element attached to said pen and adapted to be connected as an opposing elecadapted to'be, simultaneously with said other electrode, in electrical contact with said liquid discharged from said pen uponsaid contacting surface.

Signed at New York, in the county of New York and State of New York this 15th day of June A. D. 1922.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2421735 *Dec 22, 1941Jun 3, 1947Prest Clarence OMethod of electrolytically reproducing prints or designs
US2433382 *Sep 11, 1944Dec 30, 1947Bell Telephone Labor IncRecorder system with electromagnetically attracted electric stylus
US2667402 *Jul 27, 1951Jan 26, 1954Electro Physical Lab IncMarking device
US3375528 *May 7, 1965Mar 26, 1968Xerox CorpRecording pen having a plurality of closely spaced wires
US3952314 *Nov 25, 1974Apr 20, 1976Xerox CorporationElectrolytic pen
US4165513 *Jul 15, 1977Aug 21, 1979Flory Harold ESignal-operated marking device
US5478382 *Jul 5, 1994Dec 26, 1995Binney & Smith Inc.Color changing compositions for use on non-porous surfaces
US5489331 *Jul 5, 1994Feb 6, 1996Binney & Smith Inc.Color changing compositions using acids
US5492558 *Oct 3, 1994Feb 20, 1996Binney & Smith Inc.Color changing compositions for highlighters
US5498282 *Oct 3, 1994Mar 12, 1996Binney & Smith Inc.Color changing pan paint compositions
US5503665 *Oct 4, 1994Apr 2, 1996Binney & Smith Inc.Latent image compositions
US7760191Jun 24, 2005Jul 20, 2010The Invention Science Fund 1, IncHandwriting regions keyed to a data receptor
US7791593Jun 24, 2005Sep 7, 2010The Invention Science Fund I, LlcMachine-differentiatable identifiers having a commonly accepted meaning
US7809215Nov 20, 2006Oct 5, 2010The Invention Science Fund I, LlcContextual information encoded in a formed expression
US7813597Nov 20, 2006Oct 12, 2010The Invention Science Fund I, LlcInformation encoded in an expression
US7826687Nov 20, 2006Nov 2, 2010The Invention Science Fund I, LlcIncluding contextual information with a formed expression
US7873243Nov 20, 2006Jan 18, 2011The Invention Science Fund I, LlcDecoding digital information included in a hand-formed expression
US8102383Jan 24, 2012The Invention Science Fund I, LlcPerforming an action with respect to a hand-formed expression
US8229252Apr 25, 2005Jul 24, 2012The Invention Science Fund I, LlcElectronic association of a user expression and a context of the expression
US8232979May 25, 2005Jul 31, 2012The Invention Science Fund I, LlcPerforming an action with respect to hand-formed expression
US8244074Oct 11, 2006Aug 14, 2012The Invention Science Fund I, LlcElectronic acquisition of a hand formed expression and a context of the expression
US8290313Oct 11, 2006Oct 16, 2012The Invention Science Fund I, LlcElectronic acquisition of a hand formed expression and a context of the expression
US8300943Mar 1, 2010Oct 30, 2012The Invention Science Fund I, LlcForms for completion with an electronic writing device
US8340476Mar 18, 2005Dec 25, 2012The Invention Science Fund I, LlcElectronic acquisition of a hand formed expression and a context of the expression
US8599174 *Nov 20, 2006Dec 3, 2013The Invention Science Fund I, LlcVerifying a written expression
US8640959Mar 31, 2005Feb 4, 2014The Invention Science Fund I, LlcAcquisition of a user expression and a context of the expression
US8749480Jun 24, 2005Jun 10, 2014The Invention Science Fund I, LlcArticle having a writing portion and preformed identifiers
US8787706Mar 31, 2005Jul 22, 2014The Invention Science Fund I, LlcAcquisition of a user expression and an environment of the expression
US8823636Nov 20, 2006Sep 2, 2014The Invention Science Fund I, LlcIncluding environmental information in a manual expression
US8897605Jan 17, 2011Nov 25, 2014The Invention Science Fund I, LlcDecoding digital information included in a hand-formed expression
US8928632Jul 20, 2010Jan 6, 2015The Invention Science Fund I, LlcHandwriting regions keyed to a data receptor
CN1881469BApr 14, 2006Jun 29, 2011奥沃尼克斯股份有限公司Method and system for reading phase change memories without triggering reset cell threshode devices
EP0020288A1 *May 22, 1980Dec 10, 1980BIOTRONIK Mess- und Therapiegeräte GmbH & Co Ingenieurbüro BerlinJelly electrode adapted to collect bio-electric signals
U.S. Classification178/62, 346/140.1, 346/143, 401/292, 401/195, 401/221, 401/194, 401/2, 347/166
International ClassificationB43K8/22, H04L15/30, H04L15/00, B43K29/00, B43K8/00
Cooperative ClassificationH04L15/30, B43K29/00, B43K8/22
European ClassificationB43K8/22, H04L15/30, B43K29/00