DiI 
DiAt, rae 
TALy ze Tine-Dia 
Bird, in Bea the Se ekle of Latham, and 
Saulari is Gracula of Gmelin, which fe. 
AL-Plate, is ae face of an iaftrament which fhews the 
! y means of a moving hand 
f a gnomon that falls upon it ; 
ock. diate, watch-dials, and fun-dials. 
ee peas 
ock makers have alfo given the name of dials to a 
particular ion time eee ; viz iuch as are generally 
ufed in kitchens, fhops, They are a day clan 
movements, which do an firike, but only fhew the hours an 
minutes. 
The dial-plates of clocks and watches are almoft univer- 
i 
fally divided into twelve hours, which are denoted by Roman 
numerals, and each of thofe hours is fubdivided into five mi- 
nutes,. fo as to divide the whole circumference into lixt 
equal parts or minutes. Inttead of Roman numerals, th 
hours of fome cl cks and watches are ener indicated by the 
) n nu rabic fig ometimes they 
ig ures; an 
are even really indicated by the let ters of fome particular 
word, or name. We have fometimes, t ona eldom, feen 
the dial-plate of a clock divided into 2 or twice 123 
and in them the died hand of courfe goes oun once only in 
24. hours. In certain ae time-pieces, the hours on 
the dial plate are difpoled i 1a {piral manner; fo that four or 
fix of them fill up the uk circumference, and the reft are 
marked under thofe, and nearer to the centre (as in Dr. 
Frankiin’s clock, and others); the hour hand then going 
round the whole circumfrrence in lefs time than 12 hours. 
See the next article. 
Diau-Plate of a Clock or Watch, called alfo the face, 
is that fixed plate which contains the divided circles of 
hours, minutes, and feconds, pointed to by the ref{fpeGive 
hands, and which is pinned to the frame by the dial-pillars. 
This plate, i in the ancient machines, was made of brafs, en- 
graved into various devices, and filvered, fometimes onl 
pertially ; but the modern makers prefer enamel to filvering, 
and that either real or imitative, according to the price in- 
tended to be charged for the workmanfhip. The maker’s 
name 7 alfo bare! pat on fome gonfpicuous ea of the dial- 
the ne “of the wee 
The divided circles Gate hee or fome o ae are 
introduced, and perforations to fhew the divifions of other 
{maller plates, aecles within or behind the principal plate, 
are frequently fupera 
Drat- Work of a Clocks or Watch, properly fpeaking, is that 
work which relates to the dial-plate, hands, dial-pillars, and 
{mall revolving plates, that are {ometimes calculated to per- 
form their revolutions in certain given periods of time 
we 
or wheel-work, contained bevwee re dial-plate and the 
frame, the term dial-work may be faid to include alfo the 
motion-work, oa which oe the figure, dimenfions, and 
3 
ae} 
fal 
al 
ie) 
1 
fenfibly into minute as it was found that any modified 
petiod of time ae bao by wheet-work, bor- 
rowing its motio going-part of the machine, 
without mately eae its rate of going, particularly, 
AL. 
when the motions produced are flow. Hence = the 
practice of reprefenting planetary oe and of intro- 
ducing various devices, either for i 
enhance the 
rfluous, and frequently renders the rate of their going 
uniteady. ight be confidcred as unneceflary now, that 
ocks atches are in every perfon’s poffleflion, to give 
ae the a 
ra bridge that has got e 
bdcenaes the interior cannon wheel of the fone in con- 
fequence of its connection with a fimilar wheel on the arbor 
of the wheel that ufually carries the feconds’ hand out of the 
centre. The dials fhewn in Plate XXIII. already defcribed, 
as contrived by Dr. Franklin and Mr. Fergufon, have no 
motion-work, but fimply the hands, or revolving f lates at- 
tached to tne arbors of the going part of the tlock, which 
we mention here with a refererice to the word CLock, left _ 
the reader fhould ccnfult our prefent article for them in 
vain. We have alfo defcribed the dial-work of Enderlin’s 
equation clock, as feenin Plate XXIV., in fig. 2, of which is 
feen a dial with the hours, minutes, and feconds out of the 
centre, together with other appendages, with the account of 
which the curious reader will be inte:elted in the article al- 
ready referred We have, however, referved for our 
prefent article three or four different {pecimens of dial-work, 
that have not been before def{cribed, and that, we traf, Will. 
therefore be acceptable to the ublic. 
Plate XXXI. of Horology prefents: two. figures, the firtt 
of which exhibits the motion-work under.the dial of a clock, 
parts. In a 
teeth that revolves, as in common, in twelve heat a by means 
a its connedlion with of fix leaves 5 
5 
ct 
a 
in scouted with a tooth d, projecting from 
and pufhes it one-feventh part round by , 
{mall fpring, 7; the age bar ares deicends by its weight, 
its tooth being clear o wheel ¢, till its jointed, 
oo) J; falls on the as Ciceecdiae point of the oo 
© 
