The Hillsborough recorder. [volume] (Hillsborough, N.C.) 1820-1879, 1845-03-06

h
q iElFfesia' '-li.is mrtlnd 81 - daring
bos.ks aD3 pginls n nulbe eKsmplrd Ir..s
the eumsn0n lots bnl alrA i Ihs elbsn.e
simt.lieily sd nnfaamplrd ~ lidily az he
process in.msidplyirg rhgfssings. dr.s-
ms and books. that Il nanAi inetiialiy 8.
soc lonE. sslal'lished IN Eenesal es,maIler.
We have ltssd. ytsfs $50. q similar Plo-
positions. bui III &c il1ey hare aersrb rn
maiarsd in isolation II 81 dilEeulliss,
= IN he present ease, II he honor ara
profs be 70 lilrs~ BIZ whose labor ard II.
ernuiiy reproduction i rendered nor On.
Il przciicable. buf lrpmplanhy simple
beyond al lie haPpiesl IDEAS 81 slereo
lype. The drawing and prints which ac.
cnmpsny ilris naiirr. with he leiler-press.
form together m example 81 Ills method
of printing. The letef-press uas kFststt
in Il pc. BY me ordinsfy printer &c lbs
Arl-union. lessingsraee or the draNnor
engraved Illustrations. which hare been
SCI into iheir respective places on q pronf
ef the leilerpress. the Whole was cast on
10 zinc plate and 81 printed OF: and il
may be here observed. lhai there is no IL
mil 10 The thousands Of copies lha. may
be drawn. nor The slightest dimlnulion ef
excellence in successive impressions. The
invention i equally sueccssful in spplira-
iinn-to the ealliest prin;;ng-we have
seen several transfers from books cen.
i Iury old.
The principal merit claimed Nv The pro-
prieiors of this patent are. in the frat
plaer. their method of repeating in low re.
lief something ike photographic printing
su.lacel The trarery of engraved wood
bloek or copper plate from cut or engrar-
ing frnm such block or Plate, in such man.
ner rs Immediately 10 yield impressions
which are not in any way to be distinguish.
ed from those drawn ron the original III.
. laiedto various degrees of strength. which
sciupon those paris ofthe plates remain.
!. ing unprotected BY the ink, and 30 leare
the printing surface very slightly in re-
lief. Another chief merit Df the mren.
, ton i The successful provision againsllhe
spreading Of the ink under any depres-
sure; wherebyihe finest lines and shsr.
, rest edges are repeated with precision.
4 Another extraordinary result ofthe inyen-
! lion isihe restoration Of The ancient or in
|. jured engraving or elching-lhat is. fan
) engraving has been injured--not, be il uh-
!, derstcod, as regards The paper, bu, faded
through rareiessnsss. oi defseed by acri-
4 dent-sueh engraving ran be perfectly re-
e stirred by having every line and touch re-
!. frrshed with new ink. 50 as to give The
!, work Nth all lis details IS Il fresh from
!. The wood or copper.
i To describe briefly the preparation of
j; plate or c. Under. lei rs suppose ness'
. paper about 10 Re reprinted BY this means.
j The sheet Is first moi>ierred with diluted
acid and placed between sheets u tlolting
paper. in order iha; The snperEuous nlois-
lure may be absorbed. The ink neu,ra-
i Lies the acid. which is pressed out from
: the blank space only. and elches them
IS away. In all cases where the lel,er-press
!. is,of recent ,la.e, or mol perhaps older Than
u half year, few minutes suffice for his
IS purpose. The paper is then carefully
l. placed upon the late with which lhe lei
J. ter-pTsss 20 he transferred 10 in immediate
e, contact, and the whole passed under a
. press, On removal from which. and On
carefully disenyaging the paper, The lei.
tiers are found TO reterse on the plate,
which i then rubbed with preparalie n
Of gum, sf er whwh the letters receive III
addition Of ink. which Is Immediately in
e crporated with lhai BY which they are
y already formed. These operations are
y effected in few minutes. The surface
Of the plate round The letters is bitten in
'e a very slight degree by the acid, and on
n application oi ink il is rejected by the zine.
> and received nnly by the letters, which are
!" charged with ink by tie common roller,
" used in manipulating. Each letter came
u from the press as If il had been imprinted
w by type met.l: and The copies are lac
y SMILES which cannot be distinguished
o. from The original sheet. F s-"*
y Thus fm il may be necessary to de-
scribe the process. that il may be under
st0od b. those of our readers Who are not
:. consersant with photographic manipulation
:. -thnse who are, will recognise SINE 81
!" mi'ariry in the method of preparing The
~ stone and The zinc, as far as regards tho
- gum. &c. The practicahlliy OF tranler-
!. ring let,er-press. especially prepared or
~ quite recent, 10 stone or zinc. has long been
- known. A main advantage, however, an"
Il most importan, one. possessed BY INC
=, zine over the stone, as mere matfr'a'
H. TO work from, IL ts portability. and beng
i easily formed into cylinder: for, al
- though we have only spoken ola plate Of
l.. zinc in relation with The results we have
~ Witnessed, il is To be U derstood thai IN
. the extensive operations cylinders viii d
=, employed. ~#@' %
w. II is not our purpose 10 enter more
m minnlcly into The scientific raiionaI'a I"
m, this patent, but il l. our business to COT
slider ia nrns npciiva utiiitips IL cann0