1804.] New Patents 
Obferwations—In all thofe cafes in 
which finokey chimnies are occafioned by 
the current of wind beating down them, 
it fhould feem that this method would be 
highly advantageous, fo long asthe valves, 
in that expofed fituation, can be kept 
in order, free from ruft, and from being 
clogged by the conftant afcent of fmoke 
and foot ; but upon the free aftion of the 
hinge, and upon its continuing in that 
perfect ftate, muft depend the merit of 
the invention. Smokey chimnies are fo 
detrimental to domeftic comfort, that we 
welcome every attempt made to remedy 
the evil, and we fincerely hope that ex. 
perience may prove Mr. Pether’s inven- 
tion more perfect and efficacious than we 
fhould be apt to infer as the refult of mere 
reafoning. 
= pS 
MR. JOHN BROWN’S (POOLE) for IM- 
PROVEMENTS in the WHEELS of CAR- 
RIAGES. 
It would be impoffible to do juftice to 
this invention without the affiftance of 
figures; we therefore merely announce 
that it is applicable to windlaffes, cap- 
ftans, and to the hawfe-holes of thips, as 
well as tocarriages; and that the paten- 
tee mentions, among others, the follow- 
ing as advantages which will be gained 
by the adoption of his plan: 1. In the 
_wheels of carriages, the friction between 
the box and axle-tree is removed, and the 
fame number of horfes will be enabled to 
draw a‘much heavier weight. 2. Cap- 
ftans, windlaffes, and hawfe-holes, fitted 
up according to his method, will lighten 
the labour of heaving an anchor, and thus, 
in critical feafons, fave anchor, cables, 
and even the fhip’s crew. 
a 
MR. MICHAEL LOGAN’s (ROTHER- 
HITHE) for a CONSERVATIVE LOCK, 
for PRESERVING the WHOLE QUAN- 
TITY of WATER, which, at prefent is 
EXPENDED in the PASSAGE of VES- 
SELS through LOCKS; and for. RAlts- 
ING great bodies, or quantities of WA- 
TER 10 aay ASSIGNED ALTITUDE, 
Ge. Ge. 
In this fpecification are firft enume- 
rated feveral mechanical and bydroftati- 
cal principles, upon which the invention 
depends; afterwards we are informed, 
lately enrolled. 339 
that a grand refervoir is to be built, equal 
in capacity to contain the whole quantity 
of water wanted for the lock. This re- 
fervoir is tobe conftructed parallel to the 
line of the canal, and under the bed of 
the upper level. The floor of the refer- 
voir, where the canal does not exceed 
five feet depth of water, may be laid in 
the fame place with that of the lower 
level, allowing for ftrength in the con- 
ftrugtion of the covering by which the 
water of the upper level is fupported. 
Under the platform of the upper gates is 
conftruéted the fubterraneous paffage of 
communication between the lock and the 
refervoir, through which paflage the flux 
and reflux of the whole body of water 
wanted for the ulé of the navigation at 
each lock are alternately contmued and 
preferved in the operation of the locks, 
Parallel to each fide of the lock are con- 
ftrusted the galleries which contain jointly 
the whole quantity of water which is the 
effective power in the operations of the 
lock. At the extremity of each gallery 
is funk and eftablifhed the fhaft or pit 
which receives and delivers, alternately, 
the whole quantity of water from and to 
the gallery, upon the flux and reflux of 
the lock, or in the afcending or delcend- 
ing of any veffel in her paflage through it. ' 
We have next a plan of confiruction, 
illuftrated with drawings; then a deferip- 
tion of operative principles applied in 
forming the lock; and, lafily, a detail of 
the dimenfions and fections of it. 
ae 
MR JOSEPH WILKES’s (MEASHAM, DER- 
BY) fora METHOD Gf MAKING PASTE. 
Boila quantity of mealy potatoes, and 
mafh them without peeling; then take as 
many and one third more of raw potatoes, 
and obtain the ftarch or flour from them, 
by grating them into a veffel of water, 
and referving only the finer particles. 
The mafhed potatoes are to be diluted, 
beat up, and pafled through a fieve. 
They are then to be put into a.doiler, 
and, when nearly boiling, the ftarcn pro- 
duced from the grated potatoes js to be 
added, and the whole boiled together 
about twenty minutes, during which it 
mutt be kept carefully ftirred ; itis then 
patent paite, and is to be put intoa wide 
veffel to cool. 
ee ee ee ce a a renee mace 
Exrara in our laft Number.—p. 192, col. 2, 1,42, for flure, read fiure.—-l. 43, for fool, vead poor. 
r 
NEW 
