IMPROVEMENTS IN INDICATORS FOR SHOWING WHAT IS THE CORRESPONDING TIME OF DAY AT VARIOUS PRINCIPAL PLACES
Year: 1883

page_text: LETTERS PATENT to Samuel Goodacre of Liverpool in the County of
Lancaster for an Invention of "IMPROVEMENTS IN INDICATORS FOR SHOWING
WHAT IS THE CORRESPONDING TIME OF DAY AT VARIOUS PRINCIPAL PLACES "
PROVISIONAL SPECIFICATION left by the said Samuel Goodacre at the
Office of the Commissioners of Patents on the 29th June 1883.
SAMUEL GOODACRE of Liverpool in the county of Lancaster IMPROVEMENTS IN
INDICATORS FOR SHOWING WHAT IS THE CORRESPONDING TIME OF DAY AT
VARIOUS PRINCIPAL PLACES
This invention has for its object an apparatus, which, given the time in any one
of many principal places, shall show the true time at that moment in all the
others. It will be found very useful to merchants, captains, and others in
despatching foreign telegrams.
It consists of a large disc with one central watch dial, and numerous smaller
dials all round it, the hands of which are connected to its hands with gearing.
Each dial is for a different place or meridian,-if places be on the same meridian,
they can be accommodated by one dial. The central dial being set to the time of
day at the home station, the operator at a glance can see the time of day at any
place having a dial, and consequently approximately the time at neighbouring
places not mentioned.
The hands are preferably set by a stem winding arrangement, and if desirable,
there can be two stems, one to set the hour, the other the minute hands; but I
prefer one only. Sometimes indeed, for cheap specimens, I may only use an hour
hand on cach dial, but in any case-whether there be a train of gearing to each
dial, or two independent trains, one for minutes the other for hours-making the
article in quantity, the extra gearing will not make the article very costly.

page_text: In practice I prefer to work the central dial wheel by a mitre gear on the stem,
and all the other dials by intermediate wheels from that wheel; or if there be two
concentric rings of dials, I work the outer ones by intermediate wheels from the
intermediate dials, each dial being originally set for the difference in time between
the place it represents, and the place represented by the central dial.
These articles can be made ainmall like watches to carry about, or large and fixed
against the wall or on a mantelpiece
Besides merely the names of the places, the approximate times taken to forward
a telegram can also be engraved on each dial, and the names of the telegraph
companies by which a telegram could be sent, or other useful matter.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Samuel Goodacro in the Great Seal Patent Office on the
27th December 1883.
SAMUEL GOODACRE, of Liverpool in the county of Lancaster, "IMPROVEMENTS
IN INDICATORS FOR SHOWING WHAT IS THE CORRESPONDING TIME OF DAY AT
VARIOUS PRINCIPAL PLACES."
"
This invention has for its object an apparatus, which given the time in any ono
of many principal places, shall show the true time at that moment in all the others.
It will be found very useful to merchants, captains, and others in despatching
foreign telegrams.
It consists of a large disc with one central watch dial and numerous smaller
dials all round it, the hands of which are connected to its hands with gearing.
Each dial is for different place or meridian,-if places be on the same meridian
they can be accommodated by one dial. The central dial being set to the time of
day at the home station, the operator at a glance can see the time of day at any
place having a dial, and consequently approximately the time at neighbouring
places not mentioned.
The hands can be set by a stem winding arrangement, and if desirable, there can
be two stems, one to set the hour, the other the minute hands; but I prefer for
nearly all purposes a key or button on the central dial and only one hand on each
dial the hour hand. There can however be two hands and a train of gearing to
cach dial, or two independent trains one for minutes the other for hours, one
worked by a knob at the back the other by a knob at the front-or one worked
by a stem passing through the knob of the other.
However, for small pocket apparatus shaped like a watch and stem winding, I
prefer to work the central dial or other wheel by a mitre gear on the stem, and all

page_text: the other dials by intermedinte wheels from that wheel; or if there be two con-
centric rings or dials, I work the outer ones by intermediate wheels from the
intermediate dials, each dial being originally set for the difference in time between
the place it represents and the place represented by the central dial.
These articles can be made sinall like watches to carry about, or large and fixed
against the wall or on a mantel-piece.
Besides merely the names of the places the approximate times taken to forward
n telegram can also be engraved on each dial, and the names of the telegraph
companies by which a telegram could be sent, or other useful matter.
The drawings show a simple arrangement in which a series of dials are shown
with numbers thereon. No names of places are marked but only numbers and on
a separate sheet usually hung up adjoining the dial is a list of the principal places
in the globe with the number of the dial they are nearest to, or if the placo be
about equidistant in relative time between two dials then those two dials can be
mentioned. Such a list corresponding to the dials shown but omitting "equi-
distant" places is given in the following table-the central dial being to Greenwich
time.
Having now described my invention and the best form I have yet worked out
for carrying it into effect I claim as my invention-The Indicators for showing
what is the corresponding time of day at various principal places-consisting of a
series of dials grouped together, each having a hand or hands worked from a
common centre, or centres of motion by means of one or two knobs, keys, handles,
or their equivalent so as to travel synchronously with each other-but set at

page_text: different angles so as to show, when the right time for one place is depicted on its
own dial, what is the right time for all the other places for which the apparatus is
designed, on their respective dials substantially as described.
In witness whereof I the said Samuel Goodacre have hereunto set my hand
and seal this twenty fourth day of December in the year of our Lord one thousand
eight hundred and eighty three.
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GOOD LODA
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