IMPROVEMENTS IN TIME GLOBES
Year: 1877

page_text: LETTERS PATENT to Benjamin Joseph Barnard Mills, of the Firm of Harris
and Mills, of 23, Southampton Buildings, in the County of Middlesex,
Patent Agent, for the Invention of "IMPROVEMENTS IN TIME GLOBES." A
communication from abroad by Louis Paul Juvet, of Glen's Falls, in the County
of Warren, and State of New York, United States of America.
Sealed the 8th June 1877, and dated the 3rd April 1877.
PROVISIONAL SPECIFICATION left by the said Benjamin Joseph Barnard Mills
at the Office of the Commissioners of Patents on the 3rd April 1877.
BENJAMIN JOSEPH BARNARD MILLS, of the Firm of Harris and Mills, of 23,
"IMPROVE-
Southampton Buildings, in the County of Middlesex, Patent Agent.
MENTS IN TIME GLOBES." A Communication from abroad by Louis Paul Juvet, of
Glen's Falls, in the County of Warren, and State of New York, United States of
America.
The subject of the Invention is a hollow globe containing a chronometer move-
ment, and turning on a two-part axis, one part being swivelled to the other for the
purpose of winding the enclosed chronometer movement from the outside. The
other part of the axis is preferably fixed by screwing or otherwise to the meridian
ring, and serves to hold the frame of the chronometer movement stationary within
the globe.
The chronometer movement imparts rotation to the globe from west to east
through the medium of a sleeve turning on the fixed axis so as to indicate the time
at any hour of the day or night at any longitude by reference to an equatorial
dial, which is marked with figures from 1 to 12 twice, extending from right to left,
and representing the 24 hours of the day and night. The chronometer movement
also communicates through suitable gearing a movement in the reverse direction to
hour and minute hands to show the mean time at any point where the apparatus
may be used by means of an annular clock dial fixed to the meridian ring near the
pole

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Benjamin Joseph Barnard Mills in the Great Seal Patent Office
on the 2nd October 1877.
BENJAMIN JOSEPH BARNARD MILLS, of the Firm of Harris and Mills, of 23,
Southampton Buildings, in the County of Middlesex, Patent Agent. "IMPROVE-
MENTS IN TIME GLOBES." A communication from abroad by Louis Paul Juvet, of
Glen's Falls, in the County of Warren, and State of New York, United States of
of America.
The subject of the Invention is a hollow globe containing a chronometer move-
ment, and turning on a two-part axis, one part being swivelled to the other for the
purpose of winding the enclosed chronometer movement from the outside. The
other part of the axis is preferably fixed by screwing or otherwise to the meridian
ring, and serves to hold the frame of the chronometer movement stationary within
the globe.
The chronometer movement imparts rotation to the globe from west to east
through the medium of a sleeve turning on the fixed axis, so as to indicate the
time at any hour of the day or night at any longitude by reference to an equatorial
dial, which is marked with figures from 1 to 12 twice, extending from right to left,
and representing the 24 hours of the day and night. The chronometer movement
also communicates through suitable gearing a movement in the reverse direction to
hour and minute hands to show the mean time at any point where the apparatus
may be used by means of an annular clock dial fixed to the moridian ring near the
pole.
And in order that the said Invention may be more clearly understood and readily
carried into effect, I will proceed, aided by the accompanying Drawing, more fully
In the accompanying Drawing Figure 1 is a side elevation of the improved globe,
partly broken away to expose the interior mechanism; Figure 2 is a horizontal
section on the line 2, 2, Figure 3; Figure 3 is an elevation of the operating mechanism
viewed in a line at right angles to that shown in Figure 1.
Figure 4 is a plan of the globe viewed from the pole.
A represents a hollow globe made in two hemispherical sections, divided at the
equator, and properly fitted and secured; B is an equatorial dial; C is a meridian
ring supporting the axis of the globe; F, F, represent the axis of the globe on
which it revolves; said axis is made in two parts swivelled together, the portion F
being swivelled to the portion F¹, and provided with a thumb-piece C for winding
up the chronometer mechanism within the globe. Between the plates p, p¹, and in
their centre is the barrel wheel H, containing the main spring, which imparts
motion to a series of wheels and pinions, the motion being regulated by an escape-
ment of any preferred construction. The portion F¹ of the axis constitutes the barrel
wheel arbor by which it is wound up. The ratchet wheel n is secured to the arbor
below the plate p². The fixed portion F of the arbor is secured by screws t or other-
wise to the meridian ring C, to render the movement of the chronometer stationary
within the globe. The movement rotates the globe from west to east through the
medium of the sleeve s. The equatorial dial B is marked with figures extending
from right to left, from 1 to 12 twice, to represent the 24 hours of the day and
night. The dial D is preferably marked with a single series of figures, from 1 to 12,
extending around the circle, as in an ordinary clock dial, and arranged in the
customary manner from left to right. This dial being located near the north pole
the hands b, d, are arranged to receive a motion in reverse direction from that of
the globe, so that both the motions of the hands and of the globe may be proper.
The mechanism which is adopted to impart this reverse motion to the hands consists

page_text: of a triple wheel w, w¹, w³, the three wheels being of different sizes and connected
to one sleeve which is driven by hard friction from the arbor / in customary manner.
The small wheel w drives the wheel e on the sleeve 8, by which the globe A is carried
from right to left. The second wheel w drives the wheel on the hour hand sleeve f
by means of an intermediate wheel g, so as to impart the required motion to the
hour hand in the opposite direction at double the velocity of the globe. The third
wheel w operates through an intermediate pinion h and wheel i on the wheel k of
the minute hand sleeve, so as to drive this in the same direction as the hour hand,
but at twelve times the velocity required in customary manner.
The required reverse movement of the hands and globe might be obtained by
other means than these I have described, but I prefer to employ three wheels
w, w¹, w, made fast on the same sleeve, so that when the instrument is to be set to
time the motion of the minute hand back or forward has the required effect on the
hour hand and on the globe, thus keeping all in their proper relations.
The plates p, p, which carry the chronometer movement, and between which the
spring barrel H is mounted, might be fixed to the globe, and the sleeve s attached
to the dial D, thus causing the required rotary motion to be imparted to the globe,
but it is preferred to have the plates and frame of the movement fixed to the
stationary part F of the axis, and to rotate the globe by means of a sleeve 8, as
already described.
Having thus described the nature of the said Invention, and the mode in which
the same is carried into effect, I would have it understood that what I claim is,-
First. The combination of a globe, a dial, and a chronometer movement within
the globe, arranged to operate in manner substantially as herein set forth.
Secondly. The combination of a globe, a chronometer movement, and two dials,
substantially as herein described.
Thirdly. A globo and chronometer movement mounted on an axis made in two
parts, one of which is employed for winding the enclosed chronometer movement
from the outside, as described.
Fourthly. A globe revolved to correspond with the diurnal rotation of the earth
by means of mechanism within it, communicating also through intermodiato
gearing with one or more hands, and imparting rotation thereto so as to indicato
the time on a dial
Fifthly. A time globo provided with an equatorial dial B for indicating the time
at various longitudes, and a polar dial D for indicating the time at a selected placo
by means of hands b, d, having the notions proper to the hands of a time piece.
Sixthly. The globe A revolved on its axis from west to east by the wheels w, e,
in combination with gearing w¹, w², g, h, i, k, and hands b, d, to indicate the time on
a dial D, substantially as set forth.
In witness whereof, I, the said Benjamin Joseph Barnard Mills, have hereunto
set my hand and seal, this Second day of October, in the year of our Lord
One thousand eight hundred and seventy-seven.