The sun. [volume] (New York [N.Y.]) 1833-1916, 1897-12-12

The outer ring of the dial Of this curious
clock is stationary. and is divided, into twenty.
four hour spaces, beginning with IL o'clock
noon at the top and having.12 O'Clock midnight
at the bottom Of the circle. The lower half
Of this rim, from 9 o'clock to 9 o'clock on eithoR
hand, is painted black to indicate night. With
in this circle is another circle of metal, gradu-
ated into $50 degrees. and bearing upon itn
face the names Of the principal cities of. the
world opposite their proper meridians. With
in this and forming tho centre of tho clock
dial Is q disk upon which Is depicted O map Of
the world, the poles forming the central part
of the disk and the land and sea divisions OF
the northern and southern hemispheres being
drawn one over the other upon the surface OF
the disk and made to show separately either by
means OF shading lines running In different
directions for the lands of each hemisphere.
or by means Of a different color for each.
This disk and the ring outsidesit revolve to-
one the clock has. is placed opposite the merid-
ian of the place where the clock Is to be used.
Gates the local time, and the time of the day or
night at any other point will be found indicated
By by. the e,a figures e $ s On the I'll nine fSs dial man then op%g9 ps Ma to
golis's drawing shows his clock the hand is set
for Chicago time and It is noon there, New
t aonA shows II vnsh that SRpH It IS 8 ) +. NJ n. at tt LONDON mSRs Eng RGsl:
land; . p. NJ. at Gonstantinople, II p N. at
| OllDt Low "A. hl. ~ SstllOD. Z Il. Li. ~ hDbu-
ney, 7:45 A. NJ. AT the Sandwich Islands, and
nearly 10 A. NJ. at San Francisco.
At the lower part Of the clock casing is a dial
which shows the two days of the week which
always exist at once somewhere on the face OF
the globe: and another such dial, which Is at
tached to tho moving circle and disk opposite
London at meridian $50. where the statutory
day changes, also shows what two days th0
date includes. The dials each shift when they
come opposite one another at IL midnight. AZ
the clock is shown in the accompanying draw
the first day OF the month; at Bombay 1t Is II
p. NJ. on Sunday. while at Sydney it Is 4 A. NJ.
on Monday, the I'd. From meridian 30 to me-
ridian $50 1t is Monday, while all over the rest
of the earth 1t Is still Sunday.
To show how a traveller gains or loses a day
in going around the earth, two figures Of men
on bicycles are attached, each to the end of an
arm. which brings them into sight through an
opening between the disk and the ring outside
1t. Both arms 20 around in the same direction
as the disk, but one travels one.twenty-fourth
than the disk, so that in effect one Is moving
about the earth in a westward direction and
one eastward. If these two start together au
noon from Chicago. for instance, one going east
ward and the other westward, In twenty-fouR
hours il will be found that the ono going west
ward will have moved fifteen degrees and is 90
IL o'clock, having lost an hour, while the other
IL at ! o'clock and has gained an hour. In
twen,y-fourd days, at this rate, the one will have
lost a whole day and the other gained a day.
In watching the movements of the dial map
each day begins ut u line upon the earth,
spreads gradually for twenty.four hours until
IL has covered the whole Garth, and then fades
away during IA similar time.