1303.] 
Obfervation.— We earneftly hope, and 
confidently expeétysthat effectual means 
may be devifed and generally adopted, to 
cleanfe chimnies without the aid of chil- 
dren; but we think that no machine will 
completely anfwer the end, that is not 
capable of being worked from the infide 
of the room, without the neceflity of any 
fixtures, or being obliged to have accefs 
tothe outfide of the houfe. In the pre- 
fent cafe, the expence of the roller at the 
top, ofthe bar at the bottom, and above all 
of the chain for every chimney, will, we 
fear, be found too formidable an obftacle 
to the general adoption of the plan fet 
forth in Mr. Davis’s {pecification. 
MR. SAMUELDAY’S,(CHARTER HOUSE, 
HINTON, SOMERSETSHIRE,) for an 
ENGINE, or TIME PIECE, which he 
denominates the WATCHMAN’S NOC- 
TUARY @ud LABOURER’sS REGULA- 
TOR. 
The objeét intended to be anfwered by 
this machine, is to keep watchmen, labour- 
ers, &c.conttant to their duty, or to afcer- 
tain how often and at what pericds they: 
betray the confidence repofed in them.— 
Thus, if a watchman be required rotra- 
verie the full extent of his rounds every 
half hour, Mr. Day recommends that one 
of his machines fhould be placed at each 
boundary of his walk, which will thew 
the fuperintendant in the morning whe- 
ther he has been negligent of his duty in 
any one period, 
The noétuary confifts in part of clock - 
work, and in fome refpe&s refembles an 
eight-day clock.. The face of it is divid- 
ed into hours and aliquot-parts of hours ; 
but inftead of hands, the circle on which 
the numbers are marked is moveable, and 
with cells anfwering to each period of 
time, revolves once in twelve hours. The 
teft then of regular and well-fuftained vi- 
gilance is given by the watchman’s drop- 
ping a token, a piece of metal for in- 
ftance, as he pafits, every half-hour, 
quarter, oreven half-quarter, if more ex- 
actnefs be required, into the cell which 
each particular period of time prefents to 
receive the fame ; and each cell, like the 
time that it reprefents, is irrecoverable 
when paft. No fraud on the watchman’s 
part can counteract the regular and fuc- 
ceflive motion of the wheel to which thefe 
cells are attached, and which, like the 
hand of a clock, completes its revolution 
once in twelve hours. He has no com- 
mand over it, and each cell having a token 
an it, willbe a witnefs of his diligence 
aad fidelity in going his rounds, aniwer- 
New Patents lately enrolled. 
567 
ing the next morning to the exact periods 
in which he was there, while the empty 
ones will expofe his negligence, and the 
particular periods when that occurred.— 
The mechanician will, from this brief ac- 
count, eafily comprehend the ftruéture of 
the machine, and fee to how many pur- 
pofes it may be applied, particularly in 
manufaétories where, at prefent, it is the 
employment of an overfeer to watch the 
exact period when each man comes to his 
work. 
By the ufe of the Noctuary, the calls of 
the watchman, which were inftituted for 
the purpo(e of his giving notice of being 
on his duty, and which are convenient 
warnings to the nightly thief of timely 
attack or retreat, wiil be fuperfeded ; and 
a confiderable expence of animal extriion 
will be faved to the individual, which 
might be converted into that of going his 
rounds twice where he now only goes 
once. And if inftead of an open, the 
watchman were to carry a dark lanthorn, 
the robber would have no fecurity in cal- 
culating the fit moment of his depreda- 
tion, and might be’ detected in the outfet 
of his attack; as the flighteft found 
would alarm the watchman walking in fi- 
lence, and not drowning diftant noife by 
that of bis own voice. 
Objervations.—This invention appears 
to us to deferve public attention, as well 
calculated to anfwer the ends propofed by 
the patentee. It is, however, generally 
believed, that many robberies are annually 
committed by the connivance of the 
watchmen, which the Noégtuary could not 
prevent. As a remedy for this we re- 
commend, thar, inftead of the fame watch- 
man to be appointed always to the fame 
poit, it be left tothe diflcretion of the con-- 
fiable of the night, or whoever fuperin- 
tends the watch, to appoint on each even- 
ing the men under his care to any parti- 
cularround, fo that noone fhall, previoufly 
to the hour in which his bufinefs com- 
mences, know the ftation over which he 
is to be placed. 
ae 
MR. JOSEPH BRINDLEY’sS, (ROCHES- 
TER,) for certain METHODS of more 
effectually SECURING BEAMS of sHIPs 
to their SIDES. 
After defcribing very fully, by means 
of drawings, the nature of his invention, 
Mr. Brindley undertakes to prove that 
it will be of high national advantage, 
1. In refpect to the fuperior ftrensth 
which it will give to the veffel ; 2. In the 
faving of expence; and, 3. In refpeét to 
expedition. 
4 D2 With 
