US1314619A

US1314619A - tiffany

Info

Publication number: US1314619A
Authority: US
Publication date: 1919-09-02
Anticipated expiration: 1936-09-02

Description

G. S. TIFFANY.

TELAUTOGRAPHIC APPARATUS.

APPLICATION FILED SEPT.10. 1915. RENEWED JAN. 20. 1919.

Patented Sept. 2, 1919.

2 SHEETS-SHEET 1.

G. S. TIFFANY.

TELAUTOGRAPHIC APPARATUS.

APPLICATION FILED SEPT. 10. I915- RENEWED JAN. 20. 1919.

1,314,61 9. Patented Sept. 2, 1919.

2 SHEETS-SHEET 2- UNITED STATES AEN FFICE.

GEORGE S. TIFFANY, OF SUMMIT, NEW JERSEY, ASSIGNOR T0 TELAUTOGRAPH CORPORATION, OF RICHMOND, VIRGINIA, .A'CORPORATION OF VIRGINIA.

TELAUTOGRAPHIC APPARATUS.

Specification of Letters Patent.

Application filed September 10, 1915, Serial No. 49,884. Renewed January 20, 1919. Serial No. 272,191.

To. all whom it may concern:

Be it known that I, Gnonon S. TIFFANY, a citizen of the United States, residing at Summit, county of Union, and State of New Jersey, have invented certain new and useful Improvements in Telautographic Apparatus, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements 1n telautographs of the variable currentstrength type, such as shown and described in various Letters Patent issued to me and various applications for Letters Patent filed by me.

The present invention has for its object the provision of record-making means for use in the receiving instrument in place of the inkcarrying pen and ink-Well therefor heretofore used in telautographs.

In the accompanying drawings- Figure 1 is a diagrammatic View illustrating. as far as is necessary for the purposes of the present case, a telautographic system comprising a transmitting instrument and a receiving instrument provided with a record making means embodying the present invention.

Fig. 2 is a side elevation, on an enlarged scaie, of part of the record-making means an Fig. 3 is a detail of a portion thereof on a still larger scale.

Referring to said drawings1, 2, represent the usual rheostats of a telautographic transmitting instrument, and 3 an ordinary form of electric generator, the negative pole of which is grounded at 4. 5 represents the usual tracer mounted, so as to be freely movable, in the converging ends of a pair of pen arms 6, 7 the opposite ends of which are pivotally connected with bell crank levers 8, 9, respectively, pivotally mounted at 10. 11, respectively, and provided with contact rollers 12, 13, hearing against rhcostats 1, 2, respectively. 14 indicates, as a whole, a master switch mechanism comprising stationary contacts 15. 16, 17, 18 and

movable contacts

19, 20, 21, 22. When contacts 18. 22, are in engagement, rheostats 1, 2, are

28, and wires 29, 30, to ground at l. \Vith the rheostats 1, 2, thus connected with generator 3, and with contact 17 engaged with contact 21, and contact 16 engaged with contact 20. it will be understood, of course, that, as the tracer 5 is moved laterally, as in ordinary writing, currents varying in strength, according to the positions of the roller contacts 12, 13 along rheostats 1, 2, will be shunted into the main line circuits to the receiving instrument. In such case, the right main line circuit consists of arm 9, wire 31, contacts 17, 21, wire 32, coil 33 and wires 31. 35, to ground at 36, while the left line -circuit consists of arm 8, wire 37, contacts 16, 20, wire 38, relay 39, wire 40, coil 41 and wires 42, 43, 35, to ground at 36. The coils 33, 41, are mounted, so as to move rectilinearly, on the core 44 of a field magnet-t5 which. when the left main line circuit just referred to, is closed, is excited by a battery 16. which is then in circuit with magnet 45 through wire 47, magnet 45, Wires 48. 49. i'novable contact 50, stationary contact 51, and

wires

52, 43, 35, back to the battery 16. The opening and closing of this local circuit is controlled by the left main line circuit through the relay 39 which, when energized, on the closing of the left main line circuit, attracts its armature 53 which then moves the movable contact 50 into engagement with t e statimnry contact 51. thus closing the local circait lrom battery 46/ The local circuit remains closed as long as the left main line circuit is closed. lVhen the latter is opened relay magnet 39 is deiinergized and releases its armature 53, whereupon contact 50 moves out of engagement with contact 51, thus opening this local circuit. Magnet 45 then discharges by wires 48. 5-1, 62, through a condenser 56.

The receiving tracer is mounted in the end of one of a pair of pivotally connected pen arms 61, 32 the opposite ends of which are pivotally connected with the free ends of a pair of levers 63, 64, respectively, the 0pposite ends of which are pivotally mounted, in the receiver frame. as is well understood. The pivotally mounted ends of levers 63, (H, have fixed to them sheaves 65, 66, respectively, over which run chains connected thereto, and to U-shaped brackets 67, 68. respectively. fixed to the movable coils 41,

'33, respectively, as is also well understood.

Springs (not shown) tend to move the direction.

levers 63, 64 in one direction, while the coils 41, 33, tend to move them in the opposlte As indicated, the apparatus as thus far described is well known, so that further description of it is unnecessary except to point move along rheostats 1, 2, and currents of varying strength will be shunted from generator 3, into the main-line circuit to the receiving station, where they pass through the coils 33, 41, to ground at 36. The magnetic field for these coils being excited from battery 46, by the closing of the local circuit therefrom through magnet 45 (effected by the energization of relay 39 in the left'line as before described) these coils will be moved on the magnet core 44, more or less according to the strength, from time to time, of the currents traversing the right and left main lines, the movements of each in one direc' tion being resisted by its corresponding spring1 (not shown), the tendency of which is to old the coils in .and return them to normal position. As the coils are thus moved, in one direction by the main line currents and in the other direction by the springs, they will through levers 63, 64, and arms 61, 62, move the receivin tracer 60 laterally, over the writing sur ace, in the same direction and to' the same extent as the transmitting tracer is moved, thus reproducing the characters traced by the latter. When a writing operation is ended, and contacts 20, 21 disengaged from contacts 16, 17, thus breaking the main line circuits, the local circult, at the receiver, from battery 46, through magnet 45, will be broken by the deenergiz'ation of relay 39 and consequent disengagement of contact from contact 51, and the coils 41, 33, and tracer levers '63, 64, and arms 61, 62, with receiving tracer. 60, will be returned by the springs (not shown) to unison or normal position.

In telautographic systems as heretofore constructed, however, the receiving tracer has consisted of a pen suitably supplied with ink. This has necessitated other movements of the tracer than the lateral movements just described, namely, movements to and from the writing platen 69 to dot an i, cross a t, space between words, make corrections, etc, as in ordinary handwriting, as without such to and fro movements the tracer would in dotting an i, etc., leave behind it a trail of ink in approaching and leaving the i, etc, which would disfigure and probably destroy the writing. This would be true also if the tracer were a lead pencil or the like. In addition to this, where a pen is used, it has been found necessary to provide an ink-well and to periodically dip the pen therein for a fresh supply of in the ink-well being usually located at the unison point of the receiving pen. The to and 'fro movements of the receiving pen for all of these purposes has been controlled and effected from the transmitting station by similar to and fro movements of the transmitting tracer. The tracer, as thus moved, closed and'opened what is known as a pen lifting circuit to the receiving station and this latter circuit, through suitable electrical connections at the receiving station, effected the movements of the transmitting pento and from its writing surface and (if the transmitting tracer was at unison) into and out of the ink-well for'inking. These to and fro movements of the receiving tracer are rendered unnecessary by the improvements of the present invention, according to which the record made by the transmitting tracer is a stencil produced by a electrical sparking system, which will now be described, controlled in its operation by the transmitting tracer. This system comprises a battery 70, a transformer, such as an induction coil 71, the secondary winding 72 of which is electrically connected with the receiving tracer and the receiving writing platen 69. The primary winding 73 connects with the opposite poles of battery 7 0 and, intermediate, with a high resistance electromagnet 75 and a low resistance electromagnet 74. The closing and opening of this primary circuit is controlled by. the armature 76 of a relay 77. To provide for the making of the secondary circuit, including tracer 60 and platen 69, for the purpose of sparking and consequent stenciling of the paper trip 78, tracer 60 (which is of glass and cemented in a metal collar 60" at the end of pen arm 62) contains a platinum wire 79, which, with the lower end of tracer 60, bears upon the paper strip 7 8, beneath which is the platen 69, which is of metal and connected by wire 80 with one end of the secondary winding 72.

Platinum wire 79 is connected by wire 81 with pen arm 62, which is of metal tubing, the corresponding pen lever 64 consisting of bamboo cemented in a metal socket 82 fixed to an oscillating metal standard 83. Secured to standard 83 is a collar 84 of insulating material and around this a metal collar 85, to which is secured one'end of a wire or other conductor 86 extending along lever 64 and connected at its other end with pen-arm 62. A spring contact 87, bearing against collar 85, is connected by wire 88 of induction coil 71. ,7 The primary circuit of induction coil 71 with the other end of secondary winding 72 is as follows: positive pole of battery 70, wire 90, winding of low resistance electromagnet 74,

wires

91, 92, 93, winding of high resistance electromagnet 7 5,

wires

91, 95, 90, primary winding 73 of induction coil 71, wire 97, front contact 98, armature 76 of relay 77 and wire 99 to the negative pole of battery 70. The closing and opening of this primary circuit is, as before indicated, controlled by the energization and detinergization of relay magnet 77, and attraction and release by it of its armature 76, and this is in turn controlled by the transmitting tracer 5 through electrical connections'which will now be described, 100 indicates a platen contact which when the writing platen at the transmitter is depressed by the transmitting tracer 5, engages a stationary contact 101 and closes a circuit from generator 3, consisting of wire 23, contacts 18, 22, wires 24, 102, contacts 100, 101, wire 103, contacts 15, 19'of master switch 14, and wires 103, 104, through relay magnet 77 to ground at 105. This circuit remains closed as long as the writing platen and platen contact 100 aredepressed, and it is opened innnediately these are relieved from the pressure of the transmitting tracer, as the latter is raised from the writing platen. While this circuit remains closed relay 77 is energized, holding its armature 76 against front contact 98 and thus closing the circuit just described through the primary winding 73 of induction coil 71. When it is broken armature 76 is released and rests against its back step 106, thus breaking this primary circuit. It will thus be seen that while transmitting tracer 5 is raised away from its writing platen, this primary circuit will be open and therefore no record will be made in the receiving instrument. The two main line circuits being closed, however, the receiving tracer will still continue to move laterally as the transmitting tracer is so moved, so-that when the transmitting tracer is again lowered to'the writing platen the receiving tracer will be in identically the same position with relation to its writing surface. While the transmitting tracer depresses its writingplaten and is moved thereon laterally in writing, the circuit through primary winding 73 will be closed and a record made by the receiving tracer 60 on its paper strip 78, in the following manner. The current flowing in this primary circuit willeXcite both magnets 7&1, 75, and cause each to at tract an armature 107 attached to a flat spring 108 mounted in a post 109. Magnet 7 5. however, has a great many more turns of wirethan magnet 74,- and will therefore exert a greater pull upon armature 107, thus bending spring 108 until its upper end engages a contact 110 when magnet will be short circuited from contact 110 through spring 108, post 109, and wire 111; thus reducing the resistance of the circuit of battery 70. The current will now be greatly increased in strength and will strongly magnetize the core of induction coil 71 and also magnet 71 which will then pull armature 107 and spring 108 away from contact 110, thus again introducing magnet 75 into the circuit. Mae'net 75 will then again attract armature 101 and move spring 108 into engagement with contact 110, thus again shortcircuiting magnet 75. Armature 107 and spring 108 ar thus maintained in a state of vibration, with the result that vibrating current will traverse the primary winding 73 of induction coil 71. These currents will in turn induce currents of high electromotive force in the secondary winding 72 and cause the recording paper 78 to break down and a spark to pass between platinum wire 79 and platen 09 at each impulse due to the separation of spring 108 and contact 110. As these impulses continue while the writing platen and platen contact are depressed by the transmitting tracer 5 and said tracer is moved over the writing platen, it follows that, as the receiving tracer 60 reproduces such movcmcnts of the transmitting tracer, the characters traced by the latter will be reproduced by perforations which form a stencil in the receiving paper strip 0 78. To make the record so stenciled instantly visible, the paper strip 78 may, if desired, be coated with finely powdered graphite, the action of the spark in such case being to clear away the graphite, or the 100 paper may be coated or impregnated with a mixture of finely ground sulfur and lead carbonate (as described in my application filed September 10, 1915, Serial No. 49,885)

in which case the action of the spark, due to its heating effect, will be to cause the sulfur to combine with the lead carbonate and form lead sulfid which is black. To eliminate sparking at the contacts 108, 110, and

to cause the; induction coil to de-magnetize quickly, a condenser 112 is bridged across the terminals of magnet 75 by

wires

113 and 114. 1

By making a record at the receiver in the form of a stencil, reproductions of the origi- 115 nal record may be made quickly and cheaply in the well known ways of producing copies from a stencil sheet. 1

What is claimed is:

1. In a telautograph system, the combination, with a transmitting tracer, a receiving tracer, and means operated by movements of the transmitting tracer in one plane for moving the receiving tracer in a corresponding manner of a circuit controlled by move- 12 5 merits of the transmitting tracer, and means actuated by current in said circuit and arranged to produce sparks at the receiving tracer.

2. In a telau-tograph system, the combina- 139 tion, with a receiving platen, a receiving tracer arranged to move over said platen, and means for producinga How of current between the receiving tracer and the platen, of a transmitting tracer arranged to control the movements of the receiving tracer over its platen, and a circuit controlled by lifting and depressing the transmitting tracer an arranged to control the flow of current between the receiving platen and its tracer.

3. In a telantograph system, the combination, with a transmitting tracer movable in all directions in the writing plane, and movable toward and from said writing plane, of a receiving tracer movable in all directions in its writing plane, means controlled by the movement of the transmitting tracer in the writing plane for correspondingly moving the receiving tracer, a receiving platen over which the receiving tracer can move, and means controlled by the movements of the transmitting tracer toward and from its writing plane and arranged to supply a cuI'- rent between the receiving tracer and its platen.

4. In a telautograph system, the combination, with a transmitting tracer movable in all directions in the writing plane, and movable toward and from said writing plane, of a receiving tracer movable in all direct-ions in' its writing plane, a receiving platen over which the receiving tracer can move, a circuit having terminals connected to the receiving tracer and the receiving platen, a relay arranged to cause the energization 0 said circuit, and a line circuit closed by the movement of the transmitting tracer toward its writing plane and arranged to actuate the relay.

tion, with a transmitting tracer movable 1n 1 movement of the 5. In a telautograph system, the combinaand closed by the movements of the transmitting tracer transverse lane.

' 6. In a telautograph system, the combination, with a transmitting tracer and a ceiving platen, of a receiving tracer of into its writing sulating material having a point of conduce tive material, a pen arm for the receiving tracer of condu'ctive material to which the is electrlcally connected, a pen tracer point lever for the receiving "tracer of non-conducting material, a circuit connected to the pen arm of the receiving tracer and to the receiving platen, circuits controlled by the transmitting tracer in its writing plane for correspondingly moving the receiving tracer, a line circuit opened and closed by movements of the transmitting tracer transverse to its writing plane, and

means in said line circuit for energizing sald circuit connected to the pen arm.

In testimony whereof I have hereunto setmyhand in the presence of a subscribing witness.

GEORGE S. TIFFAlFY.

HITE.