US655203A

US655203A - Telegraphic transmitter and receiver.

Info

Publication number: US655203A
Application number: US71967399A
Authority: US
Inventors: Albert C Crehore; George O Squier
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-06-07
Filing date: 1899-06-07
Publication date: 1900-08-07
Anticipated expiration: 1917-08-07

Description

No. 655,203. Patented Aug. 7, I900. A. C. CREHORE & G. 0. SOUIER. TELEGBAPHIC TRANSMITTER AND RECEIVER.

(Application filed Jfine 7, 1899.) (No Model.) 3 Sheets-Sheet I.

, 67" 77, F6 660/95 0 a ua.

' m: cams PETERS co., wormumo" wnsnmaron, nv c.

No. 655,203. Patented Aug. 7, I900. A. c. CREHORE & a. 0. SOUIER. TELEGRAPHIC TRANSMITTER AND RECEIVER.

(Application filed June 7, 1699.) (No Model.) 3 SheetsSheet 3.

Witnesses;

Attarng m: uonms PETERS 0, Pnaroumouwacmnmom o, c.

NITPED STATES PATENT OFFICE;

ALBERT o. cannons, or HANOVER, NEW HAMPSHIRE, AND GEORGE o. soUIEn, or rorrrnnss MONROE, VIRGINIA.

TELEGRAPHIC TRANSMITTER AND Receives;

dPECIFIGATION forming of Letters Patent No. 655,203, ate-d August 7', 1906. Application filed. time '7, 139 Serial No. 719,673. (No man.)

To an inherit it may concern: Be it known that we, ALBERT C. CREHORE, a resident of Hanover, in the county of Grafton and State of New Hampshire, and GEORGE handled.

O. SQUIER, a resident of Fortress Monroe, in the county of Elizabeth City and State of-Virginia, citizens of the United States; have invented certain new and useful Improvements in Telegraphic Transmitters and Receivers, of which the following is a specification.

This invention relates to telegraphic transmitters and receivers, but will be described with special reference to receivers and to that class thereof known as chemical receivers.

In transmitters using perforated tapes and ih chemical receivers the message has usually been perforated longitudinally of the tapes, and it has usually been received longitudinally thereof. In both instruments these tapes are inconvenient for handling and give considerable trouble, particularly with long messages.

One object of the present invention is to so organize an instrument or apparatus that it may be used as a transmitter or as a receiver and which will be adapted to transmit messages from sheets wherein they have been perforated in lines transversely of the sheet and also to receive messages in linestransversely of a sheet. The messages willthen be in letter form and will be much more easily Another object of the invention is to construct a receiver that will be especially adapted to'takemessages sent by the alternatingc'urrent transmitters constructed by us. The receiver is not, however, limited to use with said transmitters, since itis readily adaptable for use in the place of any chemical receiver.

Withthese objects in view the invention consists in the construction and combination of parts and mechanisms hereinafter described, and set forth in the claims.

In the accompanying drawings, which form a part of this specification, Figure 1 is a plan of the receiver. Fig. 2 is a front elevation thereof, and Fig. 3 is a side elevation with parts shown insection. Fig. 4 represents a part of a sheet bearing characters. as formed in our instrument when used as a receiver. Fig. 5 is a similar representation of asheet perforated with the same characters and adapted for use in the same instrument when used as a transmitter.

The drawings simply represent the elemental parts of the preferred form of the apparatus, no attempt being made to illustrate details and refinements of construction.

In the present receiver the styluses are made to travel across the paper or message sheet, and said sheet is madeto travel under them. Said paper may be in the form of sheets or in a continuouswelo', as shown. The message-sheet may be made to travel stepby step, being stationary, while the styluses are making a trip across it and moving a linespace between the trips of the styluses, in which case the styluses would move straight across the sheet, or the sheet may have a continuous movement, in which case the styluses may be made to move obliquely across the machine, their speed with relation to that of the sheet being so timed'that'the paper will have advanced a line-space between successive styluses and the line of characters will be straight across the sheet. This latter construction is the one preferred, and therefore the one illustrated.

The frame of the receiver is indicated at 5 and may be of any suitable form and construction. In it is journaled a roller 6, which is in a sense a platen, and may be so termed. This roller may be formed in any suitable way. Its surface may serve as a conductor or not, as preferred. If metal, it should be of tin or nickel or plated therewith. It is here shown formed of a metal tube mounted on and suitably insulated from the heads in which the journals of the roller are secured, Fig. 3. When the platen is a conductor,the apparatus may be usedon either an alternating-current circuit or on a direct-current circuit. When said platen is used as a conductor, it may be placed in circuit by any suitable means, such as a brush 7, as indicated in dotted lines in Fig. 3. The chemicallyprepared or. sensitized paper is preferably made up in a roll and mounted in one end of the frame, as indicated at 8. From this roll said paper is led over the cylinder 6 and around suitable guide-rolls, one being indicated herein, as at 9, and out through feeding-rolls, indicated at and 11, the paper being indicated by the line 12.

In the form of instrument here shown-to wit, one adapted to receive messages from an alternating current transmitter-two styluses or points 13 14: are associated together, as seen in Figs. land 2,'to which the terminals of the line are led. These s'tyl'uses may be made to travel across the apparatus in various ways. They are preferably mount- 7 ed upon a cross-piece, as 15, and insulated from one another. This cross-piece is .se.-- cured to conducting-tapes 16 17 so constructed that current may be applied tothern while in motion. These tapes are in the formof: endless bands and mounted upon rollersordrums journaled in suitable brackets or bear-- ings at either side of the apparatus. Said drums are indicated at 18 19. One way in which these drums may be constructed is best illustrated in Fig. 3, wherein metallic rings, as 20 21, are suitably insulated from one another, so that each may receive one of the conducting-tapes. These rings have flanges or projections extending to the face of the pulley, so that contacts or brushes, as indicated at 22 23, may bear thereon and convey -t'h-ecurrent through said

rings

20 and 21 to 1 the metallic bands 'and the styluses carried thereby. Several pairs of styluses 13 14 may be mounted upon the same bands 4, such pairs being indicated in thedrawin gs. These 5 pairs are placed equal distances apart, and these intervals are preferably such that one pair shall engage the message-sheet just be- 'forethe preceding pair leaves it, whereby it will be impossible for the apparatus'to omit J any character. The current flows from one stylus to the other through the message-sheet, and as the alternations occur a mark is made at one needleand then at the other, the cessation of current'or the periods of zero current between alternations or semicycles-producing no mark upon the sheet.

The styluses are preferably led onto and off from the paper by means of disks or sheets of insulation, such as are indicated at'24. 25. Thesed'isks insure .a steady and perfect engagement of thestyluses with the paper as they come upon the latter and likewise a smooth andsteady movementin leaving the paper, even when traveling at a high speed. Said disks also serve to determine-the margin of the sheet Ionwh'ich the messages are received. .In providing forthe presence of two sets of brushes upon the paper just before the precedingset leaves the same the repetition of a portion of a character or signal will frequently be produced. This repetition,however, is readily discernible; but for the purpose of making it absolutely clear where such repetition terminates longitudinal lines emaylbe formed upon the sensitizedpaper to "indicate the actual limits of the lines of characters. These lines may be made bymark- Ling devices as the paper is passing through the apparatus. Said marking devices may consistof inking-pins, but are preferably steel needles in an electric circuit,which,with its battery, is indicated at 33. The needles are indicated at 26 and 27 as mounted upon the frame of the machineand bearing upon the paper as it passes over the platen 6. These marginal lines are represented in Fig. Lat 28., and 'in said "figure the character g is shown as repeated. This figure also illus trates the appearance of the characters upon sensitized paper. The brackets 29 for the drums l8 and 19 may be of any suitable form and mounted or formed upon the frame of the apparatus in any sui-vtab'le'way."

Any suitable means may be employed for transmitting motiontothe styluses"13 and 145. In the drawings we haveshown for this pur pose a pulley, as 30, mountedupon the shaft carrying the drum 1-9.. To the driving-pulley 30 power may be transmitted in any suitable way, as by belt or chain from arsuitable motive power.

The movement of the paper through the ap paratus may be caused in any suitable way; but preferably it isproduced by gearing-connected to that which propels the styluses. The drawings illustrate this movemen-tas accomplished by means of a wormBl, mounted upon the shaft with the drivingpulley 30, which worm meshes with a worm-wheel 82, mounted upon the shaft of thefeeding-roll 1-0;

As, will be noted in Fig. 1, the brackets 29 are so mounted that the s-tyluses 13 and 14 travel obliquely across the apparatus and that their point of leaving the paper is a linespace from the point with which they engage the paper. 2

The movement of 'thepaper is soregulated with relation to the .speedof and obliquity of movement of the stylus that the lines or characters are parallel and extend across the-sheet at right angles to its lateral edges.

In using this apparatus for receiving messages overa diroot-currentcircuitthe marks will all appear at one stylus, the current passing from one stylus through the paper to the other, or by the omission of one stylus it may pass from the remaining stylus through the roller 6. In each characterrepresented on the message-sheet in Fig. 4: the upper dots or dashes-are made by, say, thepositive semicycles transmitted, while the lower ones are made by 'the negative semicycles trans mitted, the intervals between the dotsrepresenting the periods of zero'current and the spaces between the characters or words representing the semicycles that have been suppressed by the transmitter plus theperiodof zero currentat the end of one character and the beginning of the next. a 4

Obviously the apparatus described is not limited to the receipt ofany particularstyle of characteror signal, but maybe used-with any of theexi-sting-codes.

To use thisinstrumentas a transmitter the messages are prepared as indicated in Fig. 5,

' over the portions of the sheet between the perforations. To render a transmitting-sheetv operative with the alternating current, the brushes must move in synchronism with the alternations of the current, and said brushes or the parts carrying them must be, made adjustable with respect to the perforations in the message-sheet, so that the makes and breaks in the resultant current flowing over the line will occur at the zero-points between the pulses or alternations of the current.

The formation, construction, and combination of the various parts and devices of the apparatus described may be changed and varied without departing from the invention.

The invention claimed is 1. In a telegraphic instrument, the combination with means for moving a message sheet, of styluses mounted to move obliquely across thepath of the sheet the movement of the sheet and the styluses being so timed that each succeeding stylus will strike the paper one line-space behind the preceding stylus, and that the lines made by the styluses will be perpendicular to the edge of the sheet.

2. In a telegraphic instrument, the combination with means for moving a messageshe'et, of a stylus or styluses moving across the sheet, and means for protecting the margin of the sheet from the action of the styluses.

3. In a telegraphic instrument, the combination with means for moving a messagesheet, of a conducting-band mounted on pulleys at the sides of the instrument, one or more styluses carried by said band, and means for conveying current to saidband and styluses.

4. In a telegraphic instrument, the combination with a message-sheet, of an insulated conducting-surface extending transversely under it, and pairs of styluses connected in the circuit of the instrument and movable across the sheet over said conducting-surface through which the path of the current from one stylus to the other is completed.

5. In a telegraphic instrument, the combination with means for moving a messagesheet, of a pair of conducting-bands insulated from each other, styluses carried by each band, pulleys provided with conducting-surfaces over which the bands pass, and electric brushes or contacts bearing upon projections or extensions of said surfaces for conveying current to the styluses.

6. In a telegraphic instrument, the combi nation with a prepared message-sheet and mechanism for feeding it, of a continuous conducting band carrying conducting styluses in straight lines transversely across the sheet.

7. In a telegraphic instrument, the combination with means for uniformly moving a message-sheet, of a continuous conducting band or bands carrying conducting-styluses adapted to move uniformly across the sheet in straight lines at right angles to the edge of the sheet.

8. In a telegraphic instrument, the combination with a prepared message-sheet, of con-' ducting-styluses carried upon a metallic belt or belts which are caused to revolve in a plane perpendicular to the sheet so as to move the styluses in straight lines transversely across the moving sheet and means for conveying current to said belt or belts. V

9. In a telegraphic instrument, the combination with a prepared messagesheet and means for uniformly moving it, of two conducting-bands each insulated from the other, one being connected to the return and the other to the line, carrying styluses adapted to move in straight lines transversely across the sheet.

10. In a telegraphic instrument, the combination with a chemically-prepared messagesheet, means for uniformly moving the sheet, of a pair of steel bands insulated from each other, the one connected to the line and the other to the return, and means for moving the bands in a plane perpendicular to the sheet so that the styluses carried by the bands move uniformly in straight lines across the sheet. a

11. In a telegraphic instrument, the combination with a prepared message-sheet and means for moving the same, of conductingbands carrying four sets of conducting-styluses equally distributed around the band and adapted to be carried in straight lines transversely across the moving sheet and means for conveying current to said bands. Signed at New York, in the county of New York and State of New York, this 15th day of May, A. D. 1899.

ALBERT O. CREHORE. GEORGE O. SQUIER. Witnesses:

DELBERT H. DECKER, WM. H. CAPEL.

IIO