US821931A - Electrical transmitting and receiving apparatus. - Google Patents

Description

No. $21,931. 'PATENTED MAY 29, 1906.

J. P. L. numsvv. ELECTRICAL TRANSMITTIRG AND RECEIVING APPARATUS.

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No. 821,931. v

J. P. L. DUNLBVY. ELEGTRIGAL TRANSMITTING AND RECEIVING APPARATUS.

APPLIOATIOH FILED AUG. 21. 1905.

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JOHN PATRICK LEO DONLEVY, OF LONDON, ENGLAND. ELECTRICAL TRANSMITTING AND REOEIVING APPARATUS- Specificstion of Letters Patent.

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To all whom it nmy concern.-

Be it known that I, Joux Pii'rmcic Leo DoNLEvY, a subject of the King of Great Britain, residing at London, England, have invented new and useful Im mvcmcnts in Electrical Transmitting and {eceiviug App aratus, of which the following is e specificatum. This invention relates to electric-oi trimsmitting and receiving instruments, the objectsoi such invention being to providemeens whereby, first, the Norse or such like codes may be dispensed with when such npp'aretus is employed for conveying ordinary messages; second, 3 message may be transmittedor read by persons possessing no technical knowledge; third, any convenient number of letters, words, or signs-may be caused to appear upon the dial or the receiver simultaneously or independently, and such letters, words, or signs may be cs. able of renmining visible during any requir period of time;

I will now describe my invention with reference to the accompanying drawings, in which like letters denote like parts.

Figure I is a front elevation of o transmitting and receiving apparatus constructed in accordance with my mventi Fig. 2 is a plan of the keyboard of the trensmittin i a peratus. Fig. 3 is a transverse section 0 to combined apparatus, and Fig. 4 is a vertical apparatus.

It will be DIIdGISirOOi that one complete. instrument consists of a kcylmarci for transmitting messages and a receiver, which may be attached thereto or separate therefrom according to requirements, one such compete instrument beiu required at each stationwith which it is r esircd to be in communication, the he boards of each instrument being connected ircetly or indirectly l e continutetor to the receiver portion of t ie other ulstrumcnts, a battery or other source of current being in circuit therewith.

The keybnnnl is composed of a casin (1, within which the key-stems b are pivots The keys, preferably ten in number are as need and arranged to suit the nature 0- slt-ion taken by the finger-tips. By tis spect-ive keys while 0 rating, thus rendering it possible for a blind person to transact; messages or for those who see to keep the r eyes fixed upon the copy. Each key-stem 2S shutter l, such-shutter bein curried key inthe keibonrd assigned tluwtc, is so provided with s. circuit-closing device, confi ting of a spring-mounted wet-screw c. and

completed through the binding-screws c. are for returning the keys to their normal position. The keys are pivoted at g and are provided with suitable stops and pads in the ordinary manner. 7

The sight-reading receiving device is con: rained within a cnsmg It, so constructed as to stand upon the keyboard-casin e or apart from same, if desired. The sci: device consists of a type-drum i, upon the surface of which letters, words, or signs are arranged in rows and rings, the casing It, as shown in the iilustrnlion, bcingpiemeziwith sight-abides; i: at such intervals that u ictter, word, or sign in every alternate ring may be brought opposite to a. sight'hoio. Should I elect to em ploy five sight-holes, the drum will have ten rings forming live rows of lctt-ers,words, or 7 signs. Thus an axial movement of the drum to and fro equal to the pitch of the said rings will cause alternate rings to take it their 0- sit-ion opposite the sight-holes. Eiitch sig ihole is furnished with a suitably-balanced upon the pivoted arm at, such arm oing in continuution of unattached to the armature n of the: magnet 0. Each magnet o is in circuit with its respective circuit-elesmfi device and key 8 in the distant keyboard. has by de u'essing the keys respectively in circuit wit l the shutters such shutter war he opened simui- 'teneously or successively. Each shutter upon being opened exposes to view the letter, word, or sign immediately oppnsml to the sight-hole common to such shutter. Axial movement is given to the typednun i by means of the pivoted arm 1), which urm terminates in the forked pin-provided eml g. The pins upon the end %enguige a groove r formed upon it portion 0 the rum 5.. The pivoted arm 1) is uttiu'hl d to or integral with the urmuturc t, the weight of such armature being generally sullicient. to retain the tvpel drum 1 at its normal lateral position, in which yosition it is slwwn in the drawings The electromagnet 11, which is m circuit with the situated as to a capable of one-rating the crmeture t. "Thus by do Teasing this said key the nmgnet it attracts e armature t, there.- by operating the pivoted arm 1:, with the resuit that the drum 5 is laterally traversed to such an extent that the intermedie to letters, words, or si ether-eon are brought lino bath. the sig t-holes. As soon as the 6111*!!! oat-o situated in parallel.

is broken by therelease of the key the map:- not uno longer attracts the armature t,\i'l|ieh falls to its normal position, at the same time returning the drum i also to its norl'nal |msition.

Oscillating or rotary motion of the drum i, which is irrespective and independent of the traversing movement above indioated, is eil'eoted by the following derive: The drum 1' is shown in the drawingsal its normal position. The sector-rank e is in mesh with the pinion 1-, which iinion is fixed upon the drum-spin die 8. T e sector-rack is so pivoted that upon oscillathig or rocking motion being imparted thereto the drum is oscillated or rotated in either direction. The sector-rack is continued below the .pivotand terminates in the transverse plate. .r. Four pivoted and suspended llllllilt-lllta" situated two on each side of the transverse plate .r, are provided each with an (XllEHSluD-Plflt't l (llt'll extension-piece being provided with a set-serew z.'

The set-screws z are set to en age the plate 2'. The armatnres sn'ingelear \r 10" their respective magnets are inoperative. but when attracted by their magnets they eause the transverse plate ato rook, lllerebv causing the sectorraok 'v to IUt'k also. These four lllltgi'l'lflts are in eireuit eaeh with its speeilic key" within the keyboard. in eircuit with magnet 3 is elosed the armature 1 is attracted thereby, throwing its ex tension-pieoe over, and thereby rotating the drum in one direction, and if the e ircuit of magnet 4 be closed the armature 2 will rotate the drum in an opposite dirtwetion.

The armature I and manna-ts Ii arein dupli- So. also, a re the armatures 2 and magnets 4. The set-screw s ol' the armature 1 being: so set that the drum shall be caused to revolve to the extent of one line of letters, words, or signs, and the setscrew .2 of the duplicate armature. 1 being so set that the drum shall be caused to revolve to the extent of two lines of letters, words, or signs. the arrnatures 2 are arranged to operate the. drum similarly in an opposite-direction. Springs 5 return the sector-rack e to its normal osition when the armature-s 1 and 2 cease to e operative.

I'clann- I 1. Electrical transmitting and receiving Thus if the key signs, of si ht-holes ('ontlolled by shutters,

and means or eili-o-ting the movementsof the said drums and shutters from the keyboard of the transmit tensubletantiallyns deseril'ied.

1 An electrical transmitting and receiving apparatus comprising a keyboard having springkeys and electrical contact devices in eonneetion therewith, a casing, having sightholes therein shutters for said holes, typedrmns in said casing and means for rotating and traversing: the drums and operating the shutters lronrthe keylmard.

3. An electrical transmitting and receiving nppa rains emu nisinga detaehable keyboard having s rrilig= 'e vs, oontaet devices carried by said keys. a casing having sight-holes therein. shutters for said holes. a pivoted 'nrm for earh shutter, an armature eormeeted to said arm, magnets controlling the armatures, a t v a -r-drum in saidcaisingr. an arm connerted to said drum for giving the drum a. longitlu inal movement, a magnet and armature for operating said arms, a pinion on the drum, :1 seetor-raek engaging with the pinion and arumtures and ma nets for rocking said see-- tor---aek, all of sait magnets being controlled from the keyboard.

An electrical transmitting and receiving apparatus comprising a sight-reading de viee (mntainecl wit-Inn a casing and (OIlSiSli-lll}! of a series of drmnsupun which letters, si ms, or \Vottls are interrmttentiv displayed t. trough sight-holes iiereed in [he casing aforesaid,

moans for im epentlently traversing andmtsting sue'h drum to any desired position, a slantter [or eaeh sight-hole and indopendent means for operating sue-h shutters individually or collertively, substantially as and for the parposes herein desoribml.

In testimony whereof I have signed my naxne to this specification in the present-o of two subscribing witnesses.

JUIIX PJTR'ICK blli) DUNN-WY.

'i messes CHARLES Ssr'runs BERTHOE, Fauna L. Ranns.

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