Richmond enquirer. [volume] (Richmond, Va.) 1815-1867, 1845-07-25
From The Baltimore .imcrican.]

DESCRIPTION OF A PRINTING MAGNETIC TIE.
LEGRAPn.
Take two brass heels whose periphery is %
inches and surface inch. Divide the circumfe-
renee into % equal parts, and make ION The exile
rior surace) &c circular perorations three fourlhs
Of an inch deep BY half an inch widc-pace 2G
soft iron type, (having the letters of the alphabel
on them, in The 2G holes in alphabetical order
The type, 10 play freely in their recesses, but Sc
cured in such way as 10 prevent their falling
out These type will project above the surface
of each wheel one-fourth OF an inch when at
racted by the Electro-Magne On The remain
ing surface OF each wheel, opposite the pertora-
tions, are TO be inscribed the aphabet-each letter
10 be written opposite the type having the same
letter on il. The two wheels thus prepared ale 10
be attached 10 motive machine consisting OF
eog-wheels, pinions, drums, cords and weights,
similar TO cock-work.
The lower halfofcach type wheel is immersed
in and passes through cistern or trough filled
with solution Of the salts OF iron. One OF these
wheels, with its motive power apparatus and
trough is placed al each end Of the telegraph CON-
munication The centre OF each wheelbeing placed
exactly under The magnet, and one fourth Of an
inch from H. 10 permit the paper ribbon 10 pass
between the wheel and magnet.
The sizing Of The paper is 10 be intimately
mixed with a solution of gall-nuis or tannin.
The operators, BY previous understanding,
bring the letter A 10 the apex of each wheel i'm
medialely under the magnet. Both wheels are
put in motion al The same install of time, and
the operator conveying intelligence, completes
the current al the instant the letter is under the
magnet that be desires TO transfer to the under
sides Of the paper ribbon as it slowly passes un
der the magnet and above the wheel The in
slant the current is complete, the iron bar be-
comes powerful magnet, and causes the iron
type under it TO ascend and strike the paper with
force equal 10 the intensity OF The Electrical ac
iion A loUch, or the slightest contact of the type
with The paper is sufficient 10 transfer an indeli-
BILE impress Of the letter 10 the paper, as the i'm
preston does not depend on pressure or force,
but On chemical action, that part Of the prepared
paper becoming black that was touched with
type wet with a solution OF salts Of iron.
In this way letters are formed on the prepared
ribbon these letters form words, which are sepa.
rated from each other by The wheels making a re-
voniun between The end oil one word and The be-
ginning ofanoher
The mode OF operation is as follows: The two
wheels are brought with letter a in the apex
They are thus permitted 10 revolve; az the letters
forming the words 10 be printed pass under The
magnet, The current is completed, which causes
the iron type 10 ascend and strike the paper to
which it transfers its letter.
The operator watches the wheels before him
and pcriecs the current the instant the letter 10 he
transferred is under the magnet.
The same letter is at the same instant Of time
under the magnets at the opposite end Of the Tele-
graph.
The Two type wheels al both ends revolving
equal distances in equal times, bring the same
letters under the influence of The magnet at the
same instant uflime. Therefore, the wheel al the
operators end OF The Telegraph j. a true index OF
the position of The wheel al The opposite end
None Of the type touch the paper except the cur
rent is complete, and then The paper is alone
touched by the type under The nagne'. Should
il be desirable 10 use figures in addition 10 The
alphabel, il is only necessary 10 make The type
wheels 3G inches In circumference, and make 10
additional pcroraions, into which 10 figures are
placed, These can be acted upon as they pass IN
der The magnet
To The complete success Of this Printing 1ele-
graph il il indispensable thai the type-whees re-
vulye through equal spaces at equal times.
This is necessary 10 bring The same letter ON
both wheels Immediately under the magnet al the
same instant Of time.
shall eShibita working machine to the public
within few weeks, and then present il 10 Con-
gress, and the Patent Office.
JAMES OcoNNoR.
Baltimore, July g 1885,