mh | Tn mmm ag 
~ 4s fit for use. 
270 | New Patents lately enrolled. 
The pens orstyles used are 
made of agate, gr ound and polished toa 
smooth round point. ‘They are to be set 
in metal sockets, or sockets of any other 
substance. To write sixgly in this mode, 
a leaf of prepared paper is laid upon a 
smoai tablet of metal, or any other 
smooth substance, and over that is spread 
a leaf of duplicate paper: upon these Mr. 
W. writes with the style, the pressure used 
causing a transfer of the carbon to be 
made upon the under side of the dupli- 
cate paper, which being transparent, in- 
stantly appears through, a as if written upon 
the paper. To write double, a leat of 
writing paper is laid upon the tablet, then 
a leat of carbonated paper upon that, and 
upon both these a leat of duplicate pa- 
per; upon the papers so disposed, the 
writing 1s made with the style. The effect 
produced is a double transfer of thie car- 
bon from the carkonated paper; that on 
the lower surface to the letter paper be- 
neath, and that from the upper surtace, to 
the under surface of the duplicate paper 
aboveit. Duplicates may also be formed, 
by substituting any thin paper, for the due 
plicate paper, “and writing on it with any 
hard substance, which will leave a trace 
behind it, or by using such papers as ad- 
mit of a ready absorption of the colouring 
matter beneath. 
‘Yo make a further increase of writings 
from an original, a set of types. and a type 
tablet are used; and for shortening the 
hand-writing the types can be reduced to 
one figure, namely, a point; but more 
figures may be used. These convey the 
idea of any letter by the position in which 
they are placed. The types consist of 
small tubes of metal, and on that end 
which is to give the form of the letters 
may be either a round point or any other 
simple mark or marks. The type tablet 
consists of a ptece of flat metal, perfo- 
rated with holes, or sockets, to fit the 
types; on the top of the type tablet are 
engraved, squares corresponding with 
those upon the character-paper, on which 
it is intended to write or print. To pre- 
vent the accidental shifting of the types 
in their sockets, they. are rubbed with a 
little bees’-wax, softened with some oily 
substances. To prevent the types pass- 
ing through the sockets of the type tablet 
in the act of writing, there is a plate of 
metal of equal size of the type tablet fixed 
at the bottom of it, so that it will admit of 
the types being pressed to any given dis- 
tance through the sockets of the type ta- 
blet where they: are stopped. In order to 
fix the types previously to taking of im- 
pressions, melted lead, or any other sub- 
(Oct. 4, 
stance, may be run into the tops of those 
sockets which are vacated by ythe depression 
of the types that have been used for the 
coneostiare of any work, In this state it 
is called a stereo-typed tablet, and may be 
used the same in any other type in the 
common mvude of printing, aud with a 
common press. Leaves of thin charac- 
ter-paper and carbonated paper may be 
laid alternately upon each other, and up- 
on this the stereo-typed tablet is pressed 
in any manner found most convenient; 
thus a mailtiplicity of acouewae are 
formed at once. 
This invention, the patentee observes, 
combines the advantages of making se- 
veral fac-similes of writings or drawings: at 
the same time, by a single pen or style, 
which requires no repair, and with ink 
which is proof against those chemical 
agents which destroy common ink. The 
machinery is adapted for all clunates, is 
simple and portable, weighing only three 
ounces, 
SS = 
MR, RICHARD LOREN12’S (HAMMERSMITH,) 
Jar certain Inventions of different In- 
strumenis, one of which produces instan= 
tunvous Light, and the other insianta- 
neous Fire, 
To the specification describing “ie in- 
vention are annexed many drawinys, which 
are essential to the correct understanding 
of the nature of the apparatus; the most 
that can be done in our repository, is to 
give the principle, with an account of the 
materials made use of. Hydrogen easy 
and electricity, are bath included in the . 
invention; and the machinery consists in 
a vessel to produce the gas by means of 
zinc, and a diluted mineral acid, an elec- 
trophor us to furnish the spark when want- 
ed; tubes, cocks, &c to convey the gas, 
and certain contrivances to put the whole 
in motion. Having described the struc 
ture of the different parts, the patentee 
says, “ in this plate, after the electro- 
phore hath been excited, the instrument 
is reacy for use; and whenever the_cack 
is opened, a stream of hydrogen gas 
rushes ferth, se strikes the wick of the 
candle} but nearly at the same Instant 
the electric spark sets fire to the gas, and 
converts it into a jet of fame which lights . 
the candle; and the same effect may be 
repeatedly, and for many weeks, produced 
hy one charge and excitement of the said 
instrument.” If this last fact be accurate, 
we acknowlede the electrophorus is much 
superior to any that we have seen. In 
speaking of the instrument for producing 
fire, Mr. L. describes the head of a staff, 
- haying — 
