222 
ried application of a {pring or fprings, 
to be adapted andapplied with bandages, 
and by inftruments, in fuch manner, that 
the fpring hall be conftantly a¢ting, to 
correét the difeafe, and have its powers 
varied and modified, as circumftances 
fhall require, fo as to diminifh the de- 
formities gradually, till they are com- 
pletely removed. 
This principle, the patentee has illuf- 
trated in the {pecification, by its appli- 
cation to a variety of cafes of diftortion : 
Fiyfi—In cafes which arife from the 
Improper form of the bones, as that of 
curvature in the bones of thelegs. |The 
application of the fpring is equally fim- 
ple, and apparently ufeful, whether the 
bend be inward, outward, or forward. 
Secondly —Te exemplifes the applica- 
tion of the {prings in cafes, in which 
deformity erifes from an improper com- 
bination of the bones, as m that occa- 
fioned by the knee bending imward, 
while the bones of the leg and thigh are 
‘individually ftraight and perfect. 
Thirdly —He explains his methed of 
curing thofe diftortions which arife from 
defeéts in mufcular action, whatever may 
be the caufe of thofe defeéts; as in the 
“eafe which is occafioned by the contrac- 
tion of the gaftrocnimii mufcles and ten. 
‘do achilles, or by-want of power in thofe 
‘mufcles whofe office it is to counteract 
them. 
Fourthly-In the incurvation of the 
fpine. ms 
The yatrous ingenious modes of ap- 
plying the Iprings, bandages, &c. are 
clearly elucidated, by means of fourteen 
drawings, without which, we find it im- 
poffible to follow the patentee, and be, 
at the fame time, intelligible to our 
readers. 
Mr. Trusrep’s TIME REPEATER. 
On the 4th of November, Letters 
Patent were granted to Mr. CHanLEs 
-Erustep, of Overfley, in W arwick- 
fhire, for an improved repeater, to be 
applied to common watches and clocks. 
The following defcription of Mr. 
Trufted’s invention, being the fubftance 
of the {pecification, wil, doubzlefs, be in- 
tclligible to our mechanical readers : 
For the repeating of the hour, the ap- 
paratus confilts of a barrel, four pillars, 
and two plates, a fliding-rack with a 
fimple ftud fixed in it, a pinion, hammer, 
and bell—There are twelve pins, fixed 
endways, in a wheel at the end of the 
barrel, to take the hammer flip, and alfo 
twelve pins, placed in two rows diagonally, 
New Patents. —Sheldvake’ s...Trufted’s. 
” [March, 
on the barrel, which the ftud on the rack 
governs, by the turn of the pinion on the 
rack ; this is performed by the f{quare of 
the fufee of the watch, and as the ftud of 
the rack runs from one end to the other 
of the barrel, itadmits of its advancing, 
progrefsively, on the firft row of the dia- 
gonal pins, till it reaches one o'clock, and 
then it takes the fecond row in the fame 
manner. There is alfo a brais {pring, 
that aéts againft the end of the barrel har- 
bour, and by caufing a friétion, keeps it 
fteady. The performance is effeéted by a 
jagged wheel, fixed on the barrel ha:wour, 
which turns backwards, until one or the 
diagonal pins touches the ftud, and then 
turns it forward, as far as it will go; and 
alfo by the pins fixed m the end wheel 
of the barrel, which take the heel of the 
hammer and give the hour required. The 
motion is {topped by another pin, fixed in 
the barrel, which {trikes againft a pir 
fixed in one of the plates, to prevent its - 
‘going farther than it fhould. ‘ 
To perform the quarters, there muf 
be a ccmpound ftud, and alfo another 
fmall barrel, fimilar. to a harbour, with 
twelve pins, in aftraight row, to anfwer 
in diftance exaétly with the diagonal pins 
on the hour-barrel. The compound ftud 
confifts of three parts, the middle part is 
folid, and fixed to the rack ; the two other 
parts are put cne on each fide, and works 
upon a joint-pin in two flits, the ufe of 
which is to diftinguith the different quar- 
ters y for being raifed by a f{pring, on the 
under fide of the ftud, and a ftep fet upon 
it, when taken by the quarter pin, it 
preffes down that fide, and ftops on the 
itep, which prevents it from giving one 
firoke on the quarter bell, until it arrives 
at the firft quarter, and when it recovers 
in that part, it falls upon another ftep 
which ts fixed upon the immovable part 
of the ftud, and by its being permitted 
to pafs farther, it recovers one blow on 
the hammer flip of the quarter bell. The 
other two quarters are effeéted in a fimi- 
lar manner, The motion of this part is 
performed by a long pin, that is fixed 
fideways in the quarter barrel, and is 
taken upon a pin, fixed on the wheel 
above defcribed on the end of the hour 
barrel. When the barrel is turned back- 
ward, for ftriking, the two pins loofe 
their contract, and by a {piral fpring, that 
is fixed on the end of the harbour of the 
quarter-barrel, on the outfide of the plate, 
it is brought back that the pins fall on 
the fteps before mentioned ; and when the 
hour-barrel is turned forward, and has 
fignified the Hour, the pin on the wheek 
k acts 
