IMPROVEMENTS IN THE CONSTRUCTION AND ABRANORMES OF CHROME RADOMEREDO AND THERMOMETERS
Year: 1866

page_text: LETTERS PATENT to William Weichert, of Cardiff, Chronometer Manu-
facturer, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION AND
ABRANORMES OF CHROME RADOMEREDO AND THERMOMETERS"
PROVISIONAL SPECIFICATION left by the said William Weichert at the
Office of the Commissioners of Patents, with his Petition, on the 22nd
September 1866.
I, WILLIAM WEICHERT, of Cardiff, Chronometer Manufacturer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE CONSTRUC-
TION AND ARRANGEMENT OF CHRONOMETERS, BAROMETERS, AND THERMOMETERS," to
be as follows:-
This Invention relates to certain improvements in the construction and
arrangement of chronometers, barometers, and thermometers, and consists,
firstly, in causing the beating and indication of tenths of seconds; and, secondly,
in the combination with thermometers of a barometer and thermometer,
forming one instrument.
The face of the chronometer is furnished with an outer circular indicator
beyond the periphery of the ordinary "seconds" division; this outer series is
divided into six hundred parts, giving ten divisions to each second.

page_text: The wheelwork is also increased by extra pinions gearing into each other
in order to effect ten beats for each second; this is easily accomplished by
regulating the number of teeth relatively to each pinion, as is well known to
those in the trade.
In the face of the chronometer below the centre a space is cut, in which a
barometer dial is inserted, having the requisite indicators, and actuated by
mercury, as is well understood. The divisions on the scale may be made to
any degree required; and the face of the barometer also contains a small
thermometer divided into the scales of Reaumur, Centigrade, and Fahrenheit.
Now by these improved arrangements observations at sea may be taken with
great accuracy, the time indicated by the chronometer being reduced to the
tenth of a second, and moreover the indications of the thermometer and
barometer are also shewn, as it were, in one dial, thus forming a combination
of all three instruments in one.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Weichert in the Great Seal Patent Office on the
22nd March 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WEICHERT, of Cardiff, Chronometer Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of September, in the year of our
Lord One thousand eight hundred and sixty-six, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
raid William Weichert, Her special licence that I, the said William Weichert,
my executors, administrators, and assigns, or such others as I, the said William
Weichert, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
THE CONSTRUCTION AND ARRANGEMENT OF CHRONOMETERS, BAROMETERS, AND THER-
MOMETERS," upon the condition (amongst others) that I, the said William
Weichert, my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great

page_text: Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
.
NOW KNOW YE, that I, the said William Weichert, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, viz. :-
My Invention relates to certain improvements in the construction and
arrangement of chronometers, barometers, and thermometers, and consists,
firstly, in causing the indication of marks of tenths of seconds, and in the
beating of half seconds and seconds; and, secondly, in the combination with
chronometers of a barometer and thermometer, forming one instrument.
The face of the chronometer is furnished with an outer circular indicator
beyond the periphery of the ordinary "seconds divisions;" this outer series
is divided into six hundred parts, giving ten divisions to each second.
The. wheel work is also increased by extra pinions gearing into each other
in order to mark tenths and beat half seconds and seconds; this is easily accom-
plished by regulating the number of teeth relatively to each pinion, as is well
known to those in the trade.
In the face of the chronometer below the centre a space is cut, in which a
barometer dial is inserted, having the requisite indicators, and actuated by
mercury, as is well understood. The divisions on the scale may be made to
any degree required; and the face of the barometer also contains a small
thermometer, divided into the scales of Reaumur, Centigrade, and Fahrenheit.
Now by these improved arrangements observations at sea may be taken with
great accuracy, the time indicated by the chronometer being reduced to the
tenth of a second, and moreover the indications of the thermometer and
barometer are also shewn, as it were, on one dial, thus forming a combination
of all three instruments in one.
In order that my said Invention may be more completely understood I
refer to the accompanying Sheet of Drawings, in which Fig. 1 represents a
plan view of the combined instruments, and Fig. 2 a plan view of the internal
arrangement of wheels and pinions.
The divisions of the hours, minutes, and seconds are shewn partly marked
in accordance with the requirements of the Invention; the barometer and
thermometer are also shewn.
In Fig. 2 the plan view of the wheelwork is shewn. A is the hour wheel;
B, the minute wheel; C, the up-and-down wheel; D, the pinion over the
fuzee; E, F, G, three extra wheels; H, the extra cock. The seconds are
carried from the third wheel. By these arrangements the teeth of the train

page_text: of wheels being proportionately varied a quick train will be produced, and it
will distinctly shew tenths of seconds. The chronometer combining the three
instruments may also be made to beat half seconds, if preferred.
Having now described the nature of my said Invention, and the manner in
which the same is to be performed, I would remark in conclusion that I do not
limit myself to the precise details and configuration of parts I have expressed
and shewn, nor to the exact method of arrangement of the barometer and
thermometer in combination with the chronometer, as the same may obviously
be varied or modified without in any way departing from the principles on
which my Invention is based; but what I claim and desire to be secured
to me by the herein in part recited Letters Patent is, the combination with
a chronometer of a barometer and thermometer, forming one instrument,
substantially as herein specified and shewn.
In witness whereof, I, the said William Weichert, have hereunto set
my hand and seal, this Twentieth day of March, in the year of our
Lord One thousand eight hundred and sixty-seven.
Witness,
JOHN HAMBLY,
20, Bute Terrace,
Cardiff.
WILLIAM WEICHERT. (L.s.)