IMPROVEMENTS IN OR CONNECTED WITH CLINICAL AND OTHER THERMOMETERS
Year: 1873

page_text: LETTERS PATENT to James Arnold, of the Firm of Arnold and Sons,
of West Smithfield, in the City of London, Surgical Instrument
Makers, for the Invention of “IMPROVEMENTS IN OR CONNECTED WITH
CLINICAL AND OTHER THERMOMETERS.”
Sealed the 15th August 1873, and dated the 4th March 1878.
PROVISIONAL SPECIFICATION left by the said James Arnold at the
Office of the Commissioners of Patents, with his Petition, on the.
4th March 1878.
I, JAMES ARNOLD, of the Firm of Arnold and Sons, of West Smithfield,
5 in the Oity of London, Surgical Instrument Makers, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN OR CONNECTED WITH
CLINICAL AND OTHER THERMOMETERS," to be as follows :—
Heretofore thermometers which are carried in the pocket, such as
clinical thermometers, have been carried in a case, and when required for
use are taken out of the case, the case is laid aside and the thermometer
is used; now the object of my Invention is to utilize the case as a handle
for the thermometer, and at the same time to render the thermometer
itself more suitable and convenient for use and application than hereto-
fore, while at the same time I am enabled to materially reduce the

page_text: length of the thermometer, thereby rendering it more portable and
convenient to carry than those of ordinary construction.
The Invention consists in attaching the thermometer itself to one
end of the cap or cover of the case in which the thermometer is to be
carried; the cap with thermometer when inserted in the case screws or
fits tightly into the case or is otherwise secured thereto, while the opposite
or outer end of the cap is made of a corresponding size with the inner,
and in such manner that by unscrewing or withdrawing the cap from the
case which carries the thermometer, then reversing the same and placing
it in the end of the case, the latter, viz, the case, form sa handle for the
thermometer; the thermometer is thus so much increased in length by
the length of the case, and thus I am able to carry very small
thermometers, but which are capable of being lengthened to the
ordinary size by their insertion in the case itself as aforesaid.
The cap of the case may be made round, square, octagonal, or of other
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Arnold in the Great Seal Patent Office on
the 4th September 1873.!
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES 2
ARNOLD, of the Firm of Arnold and Sons, of West Smithfield, in the
City of London, Surgical Instrument Makers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of March, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty- 2
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said James Arnold, Her special licence that
I, the said James Arnold, my executors, administrators, and assigns, or
such others as I, the said James Arnold, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to 8
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, tho Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN OR CONNECTED WITH

page_text: CLINICAL AND OTHER THERMOMETERS," upon the condition (amongst others).
that I, the said James Arnold, 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.
j∙Invention, and in what manner the same was to be performed, and':
cause the same to be filed in the Great 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 James Arnold, 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, reference being had to the accompanying..
Drawings, and to the letters of reference marked thereon, that is to.
say:-
Heretofore thermometers which are carried in the pocket, such as
clinical thermometers, have been carried enclosed in a case, and when
required for use are taken out of the case, which is then laid aside while
the thermometer is used; now the object of my Invention is to utilize
the case as a handle for the thermometer, and at the same time to render
the thermometer itself more suitable and convenient for use and
application than heretofore. I am at the same time enabled to materially
reduce the length of the thermometer, thereby rendering it more portable
and convenient to carry than those of ordinary construction.
"
Figures 1, 2, and 3, of the accompanying Drawings illustrate ono.
✓ mode of carrying my Invention into effect; Figure 1 shewing, the
thermometer inserted in its case ready for use, and Figures 2 and 3
being separate views of the case B and of the thermometer A. Figure 4
shews the thermometer A inserted in its case B when out of use, in
which form it is convenient for carrying in the pocket or instrument
case. The case B and the thermometer A are by preference in either
..case joined to each other by bayonet joint as shewn..
.
Figs. 5 and 6 shew a case and thermometer of similar construction,
but I here employ a male screw thread on the end of the thermometer,
and a corresponding female screw thread in the end of the case for the
purpose of attaching one to the other. By making the case B with a
long slot, as shewn at Fig. 7, the thermometer may be pushed back
into the case when done with, and thus carried without fear of breakage,