1807.] 
a mould for casting letters or types, 
either singly or more than one at. the 
same time, or Other articles for printers’ 
use, unto one of the said apertures, which 
at that instant, by means of a lock or 
valve, or ay other well-known similar 
contrivance, is opened, in consequence 
of which the metal suddenly flows into 
the mould, and 
matrix or iat, ices, with a force which is 
greater or less, according to the height of 
the level surface of the type metal, in the 
vessel first before-mentioned, or GR UHOE: 
ing to the magnitude of such addiconal 
pressure as may be applied. And though 
the said aperture or apertures may be 
made on avy side of the vessel, yet I 
give the preference to a surface or face, 
which shall be nearly horizontal, so that 
the fluid metal shall spout upwards into 
the mould, and I prefer, as the most sim- 
ple aid easy method, that each aperture 
shall be kept closed ‘by a plate of metal 
lying upon the said horizontal surface, 
and weil fitted thereto: and that | make 
and fashion the lower part of my mould 
flat and true, in order that the same may 
be applied in like manner, and slided 
along upon the horizontal surface, to 
receive its charge of metal ; after which, 
the mould being avain drawn back, the 
plate of metal, by means of a weight or 
spring, or other weil-known agent suit- 
able to the purpose, is made to follow the 
mould and close the aperture, by resum- 
Ing its first situation; and, in order that 
the said motions and effects may be per- 
formed and produced without any par- 
ticular skill or atteution in the workman, 
{ make and apply guides, sliders, stops, 
— 
List of New Publications. 
applies itself to the - 
179 
* pins, for confining, directing, and li- 
ita the said motions, as will be suth- 
ciently obvious and intelligible to artists 
employed i in works of this nature. And 
moreover, in order that the: fluid metal 
may rse with sutlicient force into the 
mould, [ make my vessel of sucha figure” 
that the quantity of type-metal ine 
tended to be contained therein at any 
one time shall have its upper surface 
sufliciently high above the level of the 
aperture or apertures, before-mentioned ; 
aud | form my vessel of the figure of a 
box. or closed receptacle, having a pipe 
or tube rising out of the same, so that 
the pressure attorded by the statical age 
tion of the metal in the said pipe or tube, 
shall produce the desired ettect at the 
aperture or place of casting; or other- 
wise, I produce or increase the said pres- 
sure, by the statical action of water, or 
any other fluid which may be used by 
the well-known means, to compress a 
body of air against the surface of the 
type metal, fur the purposes aforesaid: 
and the. said machines, consistmg of 
vessels so’ fitted up together with the 
moulds and other parts respectively, as 
before described, may be used by one or 
more workmen to cast different letters 
vud, sorts at the same time, from the 
same mass of metal; but in tase different 
metallic mixtures should be required to 
be used, or in case local circumstances 
should render it needful that the work- 
men should be considerably distant from 
each other, recourse must be had toa 
number of distinct and separate machines 
of my said miveution, 
——-—---—— 
ay 
LIST OF NEW PUBLICATIONS IN AUGUST. 
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ee COMPLELE LIST PUBLISHED, 
and consequently the only one 
that can be useful to the Public for Purposes of wenérad Reference, it is requested, 
that Authors and Publishers will continue to communicate Notices of their Works 
(Post paid), and they will always be faithfully i wuserted, 
FREE of EXPENCE. 
a 
BIOGRAPHY. - 
"HE Lives of British Stacesmen; by John 
Macdiarmid, Esq, with Plates. Ato. 
21. Ys. bound. 
Memoirs of the Life of the Great Condé, 
written by his Serene Highness Louis Joseph 
De Bourbon, Prince De Condé, with notes. 
Translated by Fanny Holcroit. 8vo, Qs, 
‘bound, 
DRAMA. 
The Fortress, @ Mglg Drama 3 by RE E. 
Rook, Esq. 23. 
_ John Simpson. 
EDUCATION. 
Ouzstiones Greece, or Questions adapted 
for the Kton Greek Graminar; by the Rev. 
1s. Gd. 
An Introduction to the Study of English 
Grammar; by Roger Kitson. Ys. beund. 
An pene for Justice i in the Cause of Ten 
Thousand Poor Children, and for the Honour 
of the Holy, Scriptures ; being a Reply to the 
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deacon, of Sarum. ‘Third edition, with ad- 
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