460
rusM ® 5
interruptions, however, caused by the interposition ofthe varnish-writing on the transmitting cylinder, breakthe electric circuit in those points, and cause a cessationof marking whilst the style is passing over each letter.As the style traverses several times over each line ofwriting, the successions of interruptions, by correspondingwith the forms of the letters, produce an exact copy ofwhatever is written or drawn on the tin-foil message; thewriting appearing of a pale colour on a ground of closely-drawn blue lines.
The regulation of the separate instruments, so that theymay rotate exactly together, is effected by an electro-magnet or electro-magnets brought into action by localvoltaic batteries. When a single wire only is used,contact with the local voltaic batteries of the electro-magnets is made and broken by pendulums, each instru-ment having a pendulum in connexion with it; by whichmeans the electro-magnets act at regular and quickly-succeeding intervals. Levers, attached to the armaturesof the magnets press against eccentric wheels fixed uponone of the arbors of each instrument, and retard themotion of the mechanism so long as they bear againstthem. The instruments are thus regulated at every beatof the pendulums by having their speed retarded. Thedegree of retardation depends on the amount of weightapplied to impel the cylinders; care being taken that theungoverned speed should be always somewhat greaterthan it is required to be, to allow for the regulatingaction. When there are two wires employed, the re-gulation of the instruments may be effected withoutpendulums by bringing the regulating magnet of oneinstrument into action by a make-and-break contact-wheel fixed on to a corresponding arbor of the otherinstrument. To assist in adjusting two distant instru-ments, a “ guide line” is employed, which consistsmerely of a strip of paper placed perpendicularly to thelines of writing on the transmitting instrument. Whenthe corresponding instruments are set in motion, theinterruptions of the electric current by the guide lineindicate exactly, on the paper of the receiving instrument,how much faster or slower the transmitting instrumentis moving; and by adding or taking off weights at thereceiving instrument, its average speed may be adjustedto that of the transmitting one, so that the marks or gapsin each successive line drawn on the paper may fallunder each other. When the instruments are regulatedby pendulums, the guide-line serves to show whetherthey are beating together; and thus affords the means ofadjusting them with great accuracy. The following cutshows the telegraph:—
i i 1 iwmim
ttikewelt's Copying Electric Telegraph,
a, the cylinder of one of the instruments; b, the w® gstyle, connected by the wire g, with one pole oi •voltaic battery; o, the ivory arm to which the metal sty ^is attached, and which insulates the style from the sere :c, the screw on which the style traverses as the cylwrevolves; d , cog wheels to turn the screw; e , a fanregulate the speed of the instrument; /, the impel!’ »weight; h, the wire connected with the distant instment. . .
The copying electric telegraph is not yet in operatic’but its practicability has been successfully tested by 1 ^transmission of messages to and from different stations ,the Electric Telegraph Company, with the experimeninstruments exhibited.
This figure represents the character of the printingeffected by this telegraph.
TfiMti
434 Bain, Alexander, Beevor Lodge, Hammersmith"Inventor. . s
Patent electric clocks, suitable for halls of mansi° rjoffices, steeples, &c., kept in action by a small galvabattery, or the electricity of the earth. an
Time-ball to be discharged by electricity sent byordinary regulator clock. jje
Pair of electro-chemical telegraphs, stated to be WP 3of transmitting and recording communications at the rof 1000 letters, or even 1000 words, per minute. ^
Patent electro-chemical copying telegraph, said t°capable of copying any figure, such as profiles, autograp ’stenography, &c. f
Patent electric telegraph, for printing all the lettersthe alphabet in the Roman character.
[The copying telegraph referred to, depends f° r jprinciple upon the decomposition of certain chetn’ csubstances placed on paper, by means of the ele ccurrent transmitted through the wires.—K. EJ
435 French, William Henry, Cardiff, Wales"
Inventor. #
Hydraulic printing telegraph, enabling one P e ' , ltsimultaneously to print telegraphic communicationdifferent distant stations or towns. 311 d
“ Hydro-fluid” distributor, or water, telegraph,_6 aS ’j t ],fire-engine controller, for forming a communication ngany particular station or town; or any number of sta ^or towns connected with the hydraulic telegraph, anthe control of gas, water, and vapour service pipes.
Electric printing telegraph, similar to the forme ,altered and improved. _ wi reS
Electric telegraph turn-plates, for changing the,and circuits from main to branch lines and vice *®’ s ^ uS ic,Portfolios, for. filing newspapers, periodicals,manuscripts, letters, bills, receipts, &c.
436 Dering, G. E., Lockley’s Welwyn , Herts
Inventor and Patentee. . w
Electric telegraph apparatus, illustrative of a vanimprovements.
of
437 Meinig, Charles Ludovic Augustus,
103 Leadenhall Street —Agent. nyu 1 #
Portable galvanic battery of 120 elements, o^t 1 ' aJ idF12 cubic inches. Clockwork for’ ma ? tc jy,
the space ofbreaking contact,of 24 elements.
Portable intemiptor for this chain.T. L. Pulvermacher.
- - _ . i, a ttcry’
Patent portable galvanic chan
Invented by ^