MIS- CELLAN EoUs.

From the Philadelphia Inquirer
ANASTATIC PRINTING.
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ruling may be stopped at any desired distance
from the edge of the paper, the edge Of the
paper itself performing the part OF cam, Ope-
raling TO raise the pens from the paper al any de-
sired point The thickness OF q sheet Of paper is
very slight thing 70 depend upon for operating ma
ehlGery, but there is no doubt of the successful
j operation of the invention, the model furnished
the office, though imperfect, demonstrated the fact
A very elaborate machine for writing has also been
patented, evidently the fruit of deep study; and in
view OF the eompexity Of results produced by this
contriyance, the construction is exceedingly simple
as well It's operation The object Of the inven-
ton is TO furnish 10 those who are unable 10 write
the means Of writing, by sitting before a of keys
the mere touching Of which Immediately causes the
corresponding letter 10 be written upon sheet Of
paper,


Also, a variety Of new and improved inkstands
and machines for casting type. Also an improve
ment IN forming types by the eleetro-ype process.
Abiding to the anastatic printing, he says that
engraved bank note may be copied with perfect r.
dehty by this process. The extraordinary art Of
anastaIic printing has been patented in this eoun-
Try 10 foreigners and, as far as aseertaIned, has
been ppctsed with in the city Of London.
The patent granted for the process hereafter
gwen, and not Of course for the result principle.
The credit Of the discovery, and Of the first sue
eessful production Of copies from an engraving or
other printed work, belongs one Of our country
men, Mr. Joseph Dixon, now ofMystic, Connect
cut and, according TO the most credable testimony,
his results are far more perfect than any hitherto
attained by others.


The process is substantially as given in the fol-
i lowing description, via: 1--WE lay the written or
printed side on clean piece Of blottng paper, and
wet the upper side equally by Of a soft brush,
with mixture Of one part Of nitric acid Of 1862
| specific gravity, and eight parts OF water by weight
So soon as the water has completely soaked through
the original We lay IL between sheets Of blottng
paper, and remove the excess Of dilute acid by gem
| lie AZ fka -.
the original we lay its written surface on the clean
ed metallic surface place double blottng paper
IT, and pass il under considerable rolling pressure,
which causes the acid to attack the metal where
protected by the writing drawing, or printing, &c,
the original, and produce what we call negative etch-
ing. Printed books Of ten years generally require
about tWenty-four hours and those of thirty to for
y years, some days; but after that age, material
difference appears TO have taken place in the chemi-
cal condition Of the printing ink. When we con.
slider that the originals have been sufficiently acted
! ON by the acid, we remove the cover and add water
so as To reduce the strength Of the acid contained in
each sheet TO such degree that It shall not act
strongly or dlsagreeably on the tongue when brought
into contact. We now lay the original between
sheets Of clean blottng paper and subject them to
slight pressure 10 remove superhuous moisture; we
then lay II on the polished metallic surface as be.
fore described, and subject il to much greater roll


ing pressure than recent originals. fsayDg of time
Is an object, and when the originals have been very
much lndurated and dried, as in engravings, &c;
we proceed by washing over the back Of the origi-
nal TO be transferred, with solution Of causc pot
ash impure rain water distilled water, Of about
LOLA specific gravity, which we prefer to carbonate
Of potash, that substance would evolve gas in the
next process and when the original is fully soaked
we prepare saturated solution of tartaric acid in
water, IN shallow fiat basin, or sheet of glass
with wax border to form tank Sides we then place
the original, which has been soaked in caustic pot
ash IN this solution with the face TO be transferred
uppermost, and reaction takes place between the
tararic acid and potash in the paper, forming crys
tails of cream of tartar, which appear the whole
surface, and are sparlngy soluble in water, leaving
i only those parts which are protected with printing
ink uncovered with crystals. We next roll a hard
llthographc inking-roler, charged with small por
ton OF ink, over It's wet surface several times, aud
In several directions, until the black lines become
vived by new coat Of ink, leaving the blank part
of the paper covered with crystals almost untouch-
ed. We next remove the superfuous ink by sec
ond application of hard roller, unchanged with
ink, and dissolve the crystals Of cream of tartar by
mmersing the paper for some hours in dilute nitric
acid, twenty parts water by one part acid OF 1862
specific gravity by weight after which it is partial
y dried in blotting paper placed the metallic
face, 'and subjected to slight pressure as before
| "We remove the originals from the plate after
pressure, and wash the plate over in all directions
with very thick gum-water, by means of a sponge
and next rub up or fill in the plate with linen
|
c printing ink and gum water, wherever it has
been protected from the action of the acids, which
operation of charging the plate constantly follows
the continuous washing with gum, it is usual for


photographic printers TO charge their stones; and If
the transfer has not been quite complete or is from
old work, this process should be repeated at inter-
walls of one hour or more"


| Abiding 20 musical instruments, the commission
er says that 'snce the grant ofa patent in lS44 for
what was denominated the Eolan attachment, or
the combination of the piano forte and accordeon,
genius has been upon the stretch to improve upon
this combination; and the piano forte and aecordeon
in their separate uses, have been variously modified
| and improved. Two patents have been granted for
modes Of tuning the ACCORDION reeds. The tuning
of the reed is delicate operation and is effected by
filing off an exceeding small portion at a time until
1t vbrates to the proper pitch. BY the methods
adopted, the tuning is effected by merely increasing
or diminishing the length Of the spring by means of
sliding rests. In one of the inventions, the claim is
made to tuning reeds by means OF movable clamps,
which grpe the reeds and embrace part of the
plate to which the reeds attached, and admit of
sliding moving to increase or decrease the vbra-
ting part of the reed, and thus regulate the tone"
| The claim in the other is, to t'confnng the thin
metallic reeds in sliding plate, and securing the
reed and sliding plate in case, that the pitch of
the reed may be raised or lowered by the turning of
a screw attached to the sliding plate"


A patent has also been granted for attaching
swell to the piano, for the purpose of giving the
crescendo and diminuendo tones, and also, in the
language of the inventor, to furnish the explosive
tones. The sounding part of the instrument is
closed in tight case provided with shutters which,
by the action of a pedal, are opened gradually to
produce the swell, and suddenly to produce the ex.
| posve tones


In the early part of the year patent was granted
| for mode OF producing harmonic tones upon the
piano, by connecting with pedal an apparatus
which made slight pressure upon the middle Of the
strings, imitation of the delicate touch Of the fin
ger which produces these exquisite tones upon the
violin and other strnged instruments, thus produc
| ing the harmonic octaves. Pressure upon other no.
da points of the strings would Of course produce 9TH
| er harmonic tones.


| A patent has also been granted for a mode of
striking the octaves upon the piano without the
cessity OF stretching the fingers after the usual mode
The improvement is to produce, by striking upon
one key, the effect that usually results from striking
il and the eighth any particular key beyond it, in
order that those persons who find It difficult to reach
an octave upon the series Of keys, may easily pro-
duce the same result bv striking one SINGLE kew