Year: 1887

page_text: Date of Application, 11th May, 1887
Complete Left, 9th Feb., 1888
Complete Accepted, 16th Mar., 1888
A communication from abroad by AUGUSTE EDOUARD LEBRET, of 11, Rue de Sevres,
Paris, France, Watchmaker.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, in the County of Lancaster, and
323, High Holborn, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of this invention to be as follows:-
The object of this invention is to provide barometers, and other instruments, in
which the finger indicating the pressures is replaced by a movable disc or dial, used in
combination with a screen having an indent or opening to allow the reading of the
pressures, and ascertain the probable weather, which corresponds with these barometric
indications.
In carrying out the invention, the movable dial is provided on its outer edge with
divisions corresponding with the different indications, and has at the same time a series
of pictorial or other screens, painted or transferred, the subjects of which correspond
with the probable weather. Finally, in order to complete the harmony of the apparatus,
the screen itself has a picture representing a landscape, a town, a monument, or
any scene of which the movable disc forms the sky, which varies in shades according
to the weather predicted.
To make the invention more easily understood, an example of such an instrument is
represented in the drawing hereto annexed.
In the drawing-
Figure 1 shows a front view of the improved barometer.
Figure 2 shows a front view of the movable dial having the barometric indications.
Figure 3 is a section on the line 1-2, Figure 1.
In these figures the same reference letters indicate the same parts.
As it will be seen the instrument is principally characterised by the application of
the dial a mounted on the pivot 6 in the same way as pointers or fingers are generally
employed. This movable dial may be made of any thin metal or other light substance,
mica, horn, etcetera, it carries the barometric divisions and paintings, drawings or
indications corresponding with the various probable conditions of the weather.

page_text: The movable dial a moves behind a fixed disc c, one part of which is cut out or made
transparent, so that the barometric indications may be seen, as represented in Figure 1.
As has been said, this fixed disc may be ornamented in any desirable way by
paintings, photographs, chromos, lithographs etcetera, produced on the disc itself, or
transferred.
It is evident that this invention is applicable to all kinds of barometers or similar
apparatus, psychomêters, hygrometers, etcetera, and that the fixed disc may be made
with any number of openings or transparencies placed in any position, and allowing
anyone to ascertain easily, the barometric indications, one of theso openings having a
pointer d in order to make the point of indication. The dial a is mounted on the
pivot or axis in any suitable way, and it may be made to work either to the right or
to the left.
In the event of the invention being applied to a hygrometer, or other apparatus,
in which the variations are so great that the rotation of the dial is more than
360 degrees, which would make it appear for example, that the highest indications
were the lowest, instead of making the greatest tension of the tube spring or other
mechanism indicate the highest indication-then a check, stop, or other appliance may
be affixed to the shaft or other part of the apparatus, which will limit the rotation, and
prevent erroneous indications being given.

page_text: Improvements in Barometers, Hygrometers, and the like.
A communication from abroad by AUGUSTE EDOUARD LEBRET, of 11, Rue de Sevres,
Paris, France, Watchmaker.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool in the County of Lancaster, and
323 High Holborn in the County of Middlesex, Civil Engineer 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 object of this invention is partly to provide barometers and other instruments,
in which the finger indicating the pressures is replaced by a movable disc or dial used
in combination with a screen having an indent or opening to allow the reading of the
pressures, and ascertain the probable weather whichi corresponds with these barometric
indications.
In carrying out the invention the movable dial is provided on its outer edge with
divisions corresponding with the different indications, and has at the same time a
series of pictorial or other screens painted or transferred, the subjects of which
correspond with tho probable weather. Finally, in order to complete the harmony of
the apparatus the screen itself has a picture representing a landscape, a town, a
monument, or any scene of which the movable disc forms the sky, which varies in
shades according to the weather predicted.
To make the invention more easily understood, an example of such an instrument
is represented in the drawing annexed to the provisional specification, in which,'
Figure 1, shows a front view of the improved barometer.
Figure 2, shows a front view of the movable dial, having the barometric indications.
Figure 3, is a section on the line 1, 2, Figure 2.
In these Figures the same reference letters indicate the same parts.
As it will be seen the instrument is principally characterized by the application of
the dial a mounted on the pivot b in the same way as pointers or fingers are generally
employed. This movable dial may be made of any thin metal or other light substance,
mica, horn, etcetera, it carries the barometric divisions and paintings, drawings, or
indications corresponding with the various probable conditions of the weather.
The movable dial a moves behind a fixed disc c one part of which is cut out or made
transparent, so that the barometric indications may be seen, as represented in Figure 1.
As has been said, this fixed disc may be ornamented in any desirable way by
paintings, photographs, chromos, lithographs, etcetera, produced on the disc itself, or
transferred.
It is evident that this invention is applicable to all kinds of barometers, or similar
apparatus, psychrometers, hygrometers, etcetera, and that the fixed disc may be made
with any number of openings or transparencies placed in any position, and allowing

page_text: anyone to ascertain easily the barometric indications, one of these openings having a
pointer d in order to make the point of indication. The dial a is mounted upon the
pivot or axis in any suitable way, and it may be made to work either to the right or
to the left.
By combining the barometer with a hygrometer the indications of the one can
correct the errors of the other, and the indications are rendered more precise by taking
simultaneously into account, the effects due to atmospheric pressure and to the
hygrometric state of the surrounding air. The movable disc barometer described
above can be combined with a hygrometer of any kind but having also a movable dial or
disc on which a compound may be applied susceptible of changing its color; or if
desired the dial constructed of any suitable material, preferably mica, may be marked
with the hygrometric indications, whilst the barometer disc which has a larger diameter
and is preferably also of mica, will give by means of figures or other signs the
barometric indications.
On the accompanying drawings, Figures 4 and 5 illustrate a barometer and
hygrometer combined, which are, however, only shewn as specimens.
Ön these, a is the disc or annular dial for giving the barometric indications, but
this could be replaced if preferred by a barometric index or pointer. bis the disc
actuated by the hygrometric arrangement (Figure 5). Any hygrometric substance
may be used in the model from which the drawing is made, a blade of horn e is used
connected with the axis of a toothed sector d which gears with a pinion e, keyed on
the arbor carrying the disk b. A spiral spring f tends constantly to bring this disc
back to its original position; if preferred, however, two stops may be provided, one
on each side of the disc, so as to limit the extreme movement produced by dry or wet
weather. The blade cor any other hygrometric substance is held at a fixed point
preferably by means of a safety spring susceptible of yielding when there is an excess
of expansion, so as to avoid any rupture or deformation.
The hygrometer is mounted on the barometer case by providing the latter with
holes or perforations which admit of the free access of air. The indications aro read
through the opening in the disc exactly as set forth in the first part of this specification.
The hygrometer and the barometer may be of any suitable construction and can be
mounted separately or combined as hereinbefore described.
The two discs, each actuated by independent mechanisms, indicate exactly the
present state of the weather, and that which may be expected, as the indications
supplied by one of the pictures or discs can serve to correct and complete the indi-
cations of the other.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is :-
1st. The construction and arrangement of an apparatus for indicating the weather,
which consists in the combination of a barometer and hygrometer, arranged so as
to correct mutually the indications' supplied by either instrument, substantially as
described.
2nd. In a barometer or hygrometer the combination of two discs, the mechanisms
for actuating which are independent or separate, the object of said combination being
to indicate the exact weather by mutually correcting the indications of both instru-
ments, substantially as described.
WM. P. THOMPSON & Co.,
Agents for the Applicant..