56 
fully flopping it up until an accurate part- 
ing is made of that fide of the fhare which 
is defigned to be hardened ; then pour on 
it lead, platter of Paris, &c. that will take 
an exact impreflion. With this cai, ano- 
ther is taken in fand or loam of the exaét 
fhape, in iron or other metal, which is the 
part uicd to form one. fide of the fhare, 
and that gives the hardnels and temper to 
it. The other fide of the fhave is formed 
in a flafk of wood or metal, with fand or 
loam in the common way. Thefe two parts 
are faftened together by fcrews, &e. fo as 
to ferve the purpofe of confining the mould 
_ together, while the metal is pouring in. 
The focket of the fhare is formed by an 
iron or metal plug, the fhape of the fock- 
et, being inferted into'the mould, by which — 
means the focket is fure to be {mdoth, and 
exact in fize and fhape. 
Scarifiers and hoes may be caft in a fi- 
milar manner; but if both fides be re- 
quired to be hard, and the inner part foft, 
then both fides of the mould muft be made 
of iron or other metal. 
Two actions have lately been brought 
on patent caufes. The FirsT was tried 
in the Common Pleas before Lord Al- 
vanley. The aétion was brought by Mr. 
Smith, a fadler, againft Mr. Dickenfon, 
of Bond-ftreet, to recover damages for 
the injury he had fufained by the defend- 
ant having availed himielf of a communi- 
cation which the plaintiff had made to 
him, of an inventicn for which the plain- 
tiff was about to take out a patent. 
It appeared on the trial that fome years 
fince, the plaintiff had obtained a patent 
for an apparatus to give elafticity to the 
girths of faddles, and that the defendant 
in November, 1801,* obtained a patent 
fora fimilar apparatus. ‘The plaintiff at 
this period had another inventior,.very 
* See Monthly Magazine, Vol. 13, p. 383. 
Lift of New Publications. 
(Feb. ty 
fuperior to any thing before. knowns 
which he explained to Dickenfon, upon 
his firft entering into an engagement to 
take no advantage of it. Neverthelets, 
in a fhort time, he took a patent for this 
very invention. After a full inveftiga- 
tion, the jury retired, and returred a 
verdict for the plaintiff 300l. damages, 
and 40s. cofts; and likewife an aflignment 
of the defendant's patent, at his own ex- 
pence, to the plaintiff. The jury alfo 
left feveral queitions to the determination 
of the court, which we fhall probabiy 
notice hereafter. 
The sECOND was brought by Hud- 
dart* v. Grimfhaw, for an infringement 
of his patent. It was proved on the 
trial, that the defendant had, by the con- 
fent of Captain Huddart, feen his mode of 
rope-making, and had requefted the li- 
berty of adopting the fame invention at 
his ropery in Sunderland; which, how- 
every was pofitively refufed. From this. 
time, it was alfo proved, that the defend- 
ant carried on his bufinefs in a private 
manner, fhutting up his manufactery; and. 
permitting none to enter it, excepting. 
perfons in whom he could confide ; and, 
as it was alleged, pradlifing part of the 
plaintiff’s invention. 
This aétion was tried in the Court of 
King’s Bench; and, after a long invefti, 
gation, Lord Ellenborough recapitulated 
the evidence, ftatir-z the principal points 
of the lawwelative to the cafe ; he ob- 
ferved that there was certainly prima, 
facie evidence that the defendant had 
made ufe of part of plaintiff’s invention ; 
but he left it to the jury to confider whe- 
ther or not it was an infringement of the 
plaintiff’s patent. The jury returned a 
verdict for the plaintiff. 
* See an account of the Specification in’ 
the former page. _ ; 
LIST OF NEW PUBLICATIONS IN JANUARY. 
= As the List of New, Publications, contained in the Monthly Magazine, is the 
ONLY COMPLETE LIST’ PUBLISHED, and confequently the only one 
that can be ufeful to the Public for purpofes of general reference ; it is requested 
that Authors and Publifbers will continue to communicate Notices of toeir Wor's, 
| (polt paid), and they will always be faithfully inferted FREE of EXPENCE. 
/ 
BIOGRAPHY. 
Sketches of the Lives and Charaéters of 
eminent ‘Englifh Civilians; with an Enume- 
ration of the whole Seties of Academic Gra- 
duates adniitted into the College of Advocates 
for nearly three Centuries paft, 4s. fewed, 
The profit on this publication will be given 
to tome of the poor inhabitants of Caftle Bay-, 
nard ward. oe 
Memoirs of the Life of Dr. Darwin, from. 
his Settlement at Litchfield, to his Removal 
to Derby; with Anecdotes of his~Friends, 
and 
