Improvements in and relating to Watch Glasses.
Year: 1890

page_text: Date of Application, 19th June, 1890
Complete Specification Left, 19th Mar., 1891-Accepted, 2nd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to Watch Glasses.
I, ROBERT ALEXANDER SLOAN, of Castle Chambers, Castle Street, Liverpool,
in the County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to utilise the glasses of watches for the purpose
of recording short memoranda thereon, the fact of the watch being constantly
referred to in order to see the time ensuring that the memoranda so recorded will
be brought before the attention of the wearer. In this way a very effective
remembrancer is provided...
A portion of the central area of the face of the improved watch glass has a
sufficiently rough surface to permit memoranda etc. to be written thereon with a
blacklead or other pencil, the said surface being such that the memoranda shall be
readily erasable with the aid of moisture.
The portion of the face of the glass prepared for receiving the memoranda
is kept clear of the divisions and numerals of the dial and exposes the seconds
hand (if any) and the ends of the hour and minute hands, so that, even if
opaque, it does not materially interfere with the ordinary use of the watch;
it is however preferably translucent so as to allow the whole of the hands to be
discerned.
The rough surface is obtained preferably by depolishing the face of the watch
glasses by grinding, etching, sand-blasting or by any other suitable process. It may
however be obtained by affixing to the glass a film of suitable material, preferably
translucent, and upon which blacklead marks may be readily made aud erased by
the aid of moisture, such for example as celluloid.
In some cases the whole of the face of the glass may be prepared for receiving
memoranda; in such cases the depolishing is only effected to such a degree as is
necessary for the intended purpose, so as not to impair the transparency of the glass
further than necessary.
Dated thin 19th der of June 1900
SLOAN & LLOYD BARNES,
Castle Chambers, Castle Street, Liverpool, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Watch Glasses.
1, RORERT ALEXANDER SLOAN, of Castle Chambers, Castle Street, Liverpool,
in the County of Lancaster, 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 to utilise the glasses of watches for the purpose
of recording short memoranda thereon, the fact of the watch being constantly
referred to in order to see the time ensuring that the memoranda so recorded will
be brought before the attention of the wearer. In this way a very effective
remembrancer is provided.
In the accompanying drawings which serve to illustrate this invention :-
Fig. 1. shows my improved watch glass suitable for a watch having a small
seconds hand;
Fig. 1. shows my improved glass suitable for a watch without a seconds hand or
having a centre seconds hand.

page_text: Figs. III, and IV. show the glasses of Figs. I. and II. respectively, in position in
the bezel of the watch.
A portion 1 of the central area of the face of the improved watch glass 2 has a
sufficiently rough surface to permit memoranda etc. to be written thereon with a
blacklead or other pencil, the said surface being such that the memoranda shall be
readily erasable with the aid of moisture.
The portion of the face of the glass 2 prepared for receiving the memoronda is
kept clear of the divisions and numerals of the dial and exposes the seconds hand
(if any) and the end of the hour and minute hands, so that, even if opaque,
it does not materially interfere with the ordinary use of the watch;
however preferably translucent so as to allow the whole of the hands to be
discerned.
it is
It may
The rough surface is obtained preferably by depolishing the face of the watch
glasses by grinding, etching, sand-blasting or by any other suitable process.
however be obtained by affixing to the glass a film of suitable material, preferably
translucent, and upon which blacklead marks may be readily made and erased by
the aid of moisture, such for example as celluloid.
In some cases the whole of the face of the glass may be prepared for receiving
memoranda; in such cases the depolishing is only effected to such a degree as is
necessary for the intended purpose, so as not to impair the transparency of the glass
further than necessary.
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
(1) The improved watch glass a portion of the central area of which has a rough
surface substantially as and for the purpose described and illustrated.
(2) The improved watch glass a portion of the central area of which is
roughened by depolishing substantially as and for the purpose described and
illustrated.
ليمي
1
1 1001
SLOAN & LLOYD BARNES,
Castle Chambers, 26, Castle Street, Liverpool, Agents for the Applicant.