IMPROVEMENTS IN DIALS FOR GAS REGULATORS AND IN DIALS IN GENERAL, ALSO IN BESILS OR RINGS FOR DIAL FACES:
Year: 1870

page_text: LETTERS PATENT to John Carnaby, of 252, High. Holborn, in the
County of Middlesex, Gas Apparatus Manufacturer, for the Invention
of "IMPROVEMENTS IN DIALS FOR GAS REGULATORS AND IN DIALS IN GENERAL,
ALSO IN BESILS OR RINGS FOR DIAL FACES:'
وز
Sealed the 5th July 1870, and dated the 7th January 1870:
PROVISIONAL SPECIFICATION left by the said John Carnaby at the
Office of the Commissioners of Patents, with his Petition, on the
7th January, 1870.
Է
I, JOHN CARNABY, of 252, High Holborn, in the County of Middlesex;
Gas Apparatus Manufacturer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN DIALS FOR GAS REGULATORS AND IN DIALS IN
GENERAL, ALSO IN BESILS OR RINGS FOR DIAL FACES," to be as follows:-
1
It has heretofore been the practice to produce dial faces for gas
regulators and other similar apparatus from a plate of copper or other
metal coated with enamel, which was printed with the necessary figures,
symbols, or marks, and afterwards annealed to prevent the enamel.
shipping off.

page_text: Now the object of the first part of my Invention is to produce dials
for gas regulators and dials for general use of a cheaper material than
those above referred to by making the dials of paper, with an enamel
'face, upon which are printed the figures, letters, or other devices. The
paper after it is printed is secured upon a plate or disc of metal or other
material in any suitable manner, and may be afterwards varnished to
preserve it from atmospheric influences.
therein and
.In fitting glasses in the rings of dial faces it is customary to turn the
grooves of the rings to a size corresponding to the diameter of the glass,
and then to expand the ring under heat so that the glass can be inserted
into the groove easily. The ring is then removed and allowed to cool
down; in doing so it contracts and slightly nips the glass all round its
edge with sufficient power to prevent it becoming loose. I make the
inside of my rings perfectly smooth, and place the glass
secure it in place by putty, cement, or any composition.
made in two pieces, into one of which I place the glass.
this ring is screw threaded to screw over the other ring upon the front of
the case so that the glass is held. therein with sufficient pressure to hold
it tight. I place a little putty or cement on the edge of the glass before
putting it in the ring. The outer ring may be secured in any manner
by pins or otherwise instead of being screw threaded.
The ring is
The inside of
•
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Carnaby in the Great Scal Patent Office on
the 7th July 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
CARNABY, of 252, High Holborn, in the County of Middlesex, Gas
Apparatus Manufacturer, send greeting
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of January, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Carnarby, Her special licence that
I, the said John Carnaby, my executors, administrators, and assigns,
or such others as I, the said John Carnaby, my executors, adminis-
trators, and assigns, should at any time agree with, and no others,

page_text: 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, tlie Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN DIALS FOR.
GAS REGULATORS AND. IN DIALS IN. GENERAL, ALSO IN BESILS OR RINGS FOR DIAL..
FACES," upon the condition (amongst others) that I, the said John:
Carnaby, 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 Seal Patent Office within. six calendar months next and-
immediately after the date of the said Letters Patent.
T
NOW KNOW YE, that I, the said John Carnaby, 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:-
It has heretofore been the practice to produce dial faces for gas
regulators and other similar apparatus 'from a plate of copper or other
metal coated with enamel, which was printed with the necessary figures,.
symbols, or marks, and afterwards annealed to prevent the enamel.
chipping off
.
Now the object of the first part of my Invention is to produce dials
for gas regulators and dials for general use of a cheaper material than
those above referred to by making the dials of paper, with an enamel
face, upon which are printed the figures, letters, or other devices. The
paper after it is printed is secured upon a plate or disc of metal or other
material in any suitable manner, and may be afterwards varnished..to.
preserve it from atmospheric influences..
☐
In fitting glasses in the rings of dial faces it is customary to turn the.
grooves of the rings to a size corresponding to the diameter of the glass,.
and then to expand the ring under heat so that the glass can be
inserted into the groove easily. The ring is then removed and allowed
to cool down; in doing so it contracts and slightly nips the glass all.
round its edge with sufficient power to prevent it becoming loose. I
make the inside of my rings perfectly smooth and place the glass therein,
and secure it in place by putty, cement, or any composition. The ring.
is made in two pieces, into one of which I place the glass. The inside,
of this ring is screw threaded to screw.over the other ring upon the front

page_text: ་་
of the case so that the glass is held therein with sufficient pressure to.
hold it tight. I place a little putty or cement on the edge of the glass
before putting it in the ring. The outer ring may be secured in any?
manner by pins or otherwise instead of being screw 'threaded. The rings
or besils I make in two parts so that the lower part may be fixed on the
case for which it is wanted by means of screws or cement, such as gold
size and red lead, or any other suitable cement. The other part of the
ring or besil is made to fit round the part fixed to the case in a similar
manner to that in which the lids of circular boxes are screwed or
jammed on to the box, or I turn corresponding threads on the lower.
and upper part of the ring or besil so that the upper part may be screwed
to the lower; but I previously form a shoulder in the upper part of
the besil to sustain the glass, which I place in the inside of the ring and
fasten it with putty or any other suitable cement; or I cast the lower.
part of the ring on the case. I make the ground of the dials of papier
mache, pasteboard, enamelled paper, on which I print the dial by means
of a copper-plate or steel engraving, a wood cut, or a lithographic.
'drawing. I also use a dial cast upon and forming part of the face of the.
regulator. I also use photography. or the electrotype process for making.
the cases of
dials. The rings and dials are intended to be used on
Carnaby's gas. regulator, but they may be used for other purposes where.
graduated dials are required; and I use dials made flat so that the ring
or besil only slightly protrudes. When the gas regulators are to be
fixed in dark places I prefer making them with transparent illuminated.
Fig. 1 is a section of a besil constructed in accordance with my.
Invention, having a ground glass & inserted therein, and formed of two,
rings b and c. The ring c. is attached to, or forms part of the case of a
gas regulator or other apparatus, and the ring 6, is provided with a screw
thread by which it is screwed to the ring.c, which is provided with a
corresponding screw thread; d. is the shoulder against which the glass is
placed, and e is the dial. Fig. 2 is a section of a besil constructed as:
above, but having a cut glass inserted, the shoulder d preventing the
besil
rough or uneven edges. from showing. Fig. 3 is a section of a
where the ring 6 is fixed to and forms part of the gas regulator case,
•
and the glass a is secured in its place by a ring c, which may be fastened.
to 6 by screws,, pins, or c may be made to screw into b..

page_text: In the above forms I could use other methods of fixing, for example,
I might fix the rings with screws or pins, or even with cement.
Having now described the nature of my Invention, and in what
manner the same is to be carried out in practice, I hereby declare that
I claim the within described Invention of " Improvements in Dials for
Gas Regulators and in Dials in general, also in Besils or Rings for
Dial Faces," it being understood that I do not limit myself to the precise
form of details described and illustrated, nor do I claim the parts per se
and apart from the purpose of my Invention.
In witness whereof, I, the said John Carnaby, have hereunto set
my band and seal, this Fourth day of July, in the year of our
Lord One thousand eight hundred and seventy.
Witness,
F. WRIGHT,
•
ALEXANDER P. WRIGHT,
Engineer,
55, Millbank Street, Westminster,
London, S.W..
JOHN CARNABY. (L.S.)