Year: 1895

page_text: Date of Application, 11th Jan., 1895
Complete Specification Left, 20th Sept., 1895-Accepted, 26th Oct., 1895
I, LUIGI FEDELE COMITTI, of 69 Mount Pleasant, Gray's Inn Road, in the
County of London, Scientific Instrument Maker, do hereby declare the nature of
this invention to be as follows:-
The invention has for its object improvements in barometers and relates to
a novel manufacture of face whereby the same with the scale or divisions,
information and ornaments thereon, are produced in a cheap, effective and durable
manner.
In carrying my invention into effect I form the face of the instrument of
pottery, porcelain or other similar material; and I produce the required scale or
divisions, information and ornaments thereon either in intaglio or in relief, or
partly in each; the ground, the scale or divisions, information and ornaments, may
be of the same or of different colors, or parts may be bright and others dull, and
various other effects may be obtained.
Dated this 11th dow of Januar 100%
HARRIS & MILLS.
23 Southampton Buildings, London, W.C., Agents.
I, LUIGI FEDELE COMITTI, of 69 Mount Pleasant, Gray's Inn Road, in the
County of London, Scientific Instrument Maker, do hereby declare the nature of
this invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The invention has for its object improvements in barometers and relates to
a novel manufacture of face whereby the same with the scale or divisions,
information and ornaments thereon are produced in a cheap, effective and durable
manner.
In carrying my invention into effect I form the face of the instrument of
pottery, porcelain or other similar material, and I produce the required scale or
divisions, information and ornaments thereon either in intaglio or in relief, or
partly in each; the ground, the scale or divisions, information and ornaments, may
be of the same or of different colors, or parts may be bright and others dull, and
various other effects may be obtained.
My invention is illustrated in the accompanying sheet of drawings, in which :-
Fig. 1 is a front elevation and Fig. 2 a vertical cross section of one form of face
constructed according to my invention.
In this instance I have shown all the parts in relief on the face but of varying
heights or sizes.
As will be seen at Fig. 1 I construct the ground or body a of the face with a
central hole 6 for the passage of the axis of the hand or pointer in the usual
manner.

page_text: The division scale c is formed in a ring at a suitable distance around the centre b
and is composed of two sets of blocks superposed in a manner as to indicate
the inches and subdivisions respectively of the usual barometrical heights, each of
the blocks c', forming the inner part of the ring c, indicating one tenth of an inch,
and each of the smaller blocks c², forming the outer part of said ring c, indicating
one twentieth of an inch.
The numerals giving the barometic heights are placed each on a little tablet d
close to the inner circle of the ring c. I prefer to have the tablets d only slightly
raised above the ground or body with the numerals in relief thereon and the
combined height of the two only just about level with the ring c, so as to avoid
interfering with the hand or pointer of the instrument when moving over the
divisions of the scale.
The usual information or forecast of the weather is arranged in this form of
face around and at a slight distance from the outer periphery of the ring c and in
close vicinity as far as possible to the numerals indicating the barometric heights
with which they are usually associated. Each indicating word may be composed
of ornamental letters protruding from slightly raised tablets e so as to be plainly
visible at a certain distance. The letters as well as the numerals may be made in
any desired character or style and be colored, gilded, shaded, or otherwise
ornamented in any suitable manner.
In order to increase the effective appearance of the face I form around the
central hole b a rose f of any suitable design. The parts composing the rose f
can be rendered more artistic by shading them off and coloring, gilding or other-
wise ornamenting them in any desired manner, and they are preferably thicker at
the centre and gradually fall away towards the periphery. For the same purpose
I have adopted two small ornamental parts g and h.
The face can be secured to the instrument by means of two or more screws, holes
for which are provided near the periphery of the face at i i.
I would here remark that I prefer to make my improved barometer face in a
single piece by the aid of suitable moulds, but if desired some of the parts may be
made separately from the ground or body and attached thereto in any suitable
manner and ornamented or not as may be desired.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A barometer face constructed of pottery, porcelain or other similar material
having the scale or divisions, information and ornaments either in intaglio or in
relief thereon, or partly in each, and colored or otherwise ornamented, substantially
as herein described and illustrated.
Dated this 20th day of Sentember 1805
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.