Improvements in Field, Marine, Opera, and other Glasses.
Year: 1889

page_text: Date of Application, 11th Jan., 1889
Complete Specification Left, 19th Sept., 1889-Accepted, 19th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Field, Marine, Opera, and other Glasses.
CHARLES WALSHAW HOBSON of Nos. 1 3 & 5 Lexington Street Golden Square
London in the County of Middlesex Military Outfitter do hereby declare the nature of
my invention to. be as follows:-
;
This Invention has for its object improvements in Field Marine Opera and other
glasses whereby a considerable reduction is made in the size of the object glass but at
the same time preserving a similar amount of power to the circular glasses now.
in use.
My Improvements in Field Marine Opera and other glasses consist in constructing
the object lense or glass of an oblong, square or oval shape which allows of the glasses
being packed in a much smaller and flatter compass than heretofore, a great reduction
in the weight is also secured they can be cleaned more easily and are not so liable to
get out of order.
The object lense or glass may be fitted into a frame having a rim either true or
slightly tapered so as to be pressed into the frame-work of the glasses, the framework
being of a similar shape, or they may be made to slide into grooves formed on the
frame or hinged or any desired method may be employed with equally good results.
The reduction in weight and portability of glasses constructed according to my
invention is a great consideration to Military and Naval men as they can be placed in
a case or pouch which would lie perfectly flat at the side of the user.
Thus the jumping as now occurs with the circular glasses in slung cases is entirely
obviated.
'
COMPLETE SPECIFICATION.
Improvements in Field, Marine, Opera, and other Glasses.
CHARLES WALSHAW HOBSON of Nos. 1, 3 and 5 Lexington Street Golden Square
London in the County of Middlesex Military Outfitter 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:-
This Invention has for its object improvements in Field Marine Opera and other
Glasses whereby a considerable reduction is made in the size of the object glass but at
the same time presenting a similar amount of power to the circular glasses now in
use. My improvements in Field Marine Opera and other glasses consist in con-
structing the object lense or glass of an oblong square or oval shape which allows of
the glasses being packed in a much smaller and flatter compass than heretofore a great
reduction in the weight is also secured they can be cleaned more easily and are not so
liable to get out of order. The object lense or glass may be fitted into a frame having
a rim either true or slightly tapered so as to be pressed into the framework of a
similar shape or they may be made to slide into grooves formed on the frame or
hinged or any desired method may be employed with equally good results. The
reduction in weight and portability of glasses constructed according to my invention
is a great consideration to Military and Naval men as they can be placed in a case or
pouch which would be perfectly flat at the side of the user. Thus the jumping as now
occurs with the Circular glasses in sling cases is entirely obviated.
In order that my Invention may be properly understood and easily carried into

page_text: effect I will now proceed to describe the same reference being had to the accompanying
Drawings and to the letters of reference marked thereon in which
Figs. 1 and 2 are front and side elevations respectively of a Field Marine or Opera
Glass constructed according to my Invention and
Fig. 3 is a plan of the object lense thereof.
The object lense marked A is constructed of an oblong shape (as shown more
particularly by Fig. 3) which allows of the glasses being packed in a flat and much
smaller compass than hitherto the said Lense marked A is secured to the Case C of the
glass by means of the hinges marked B as shewn in Figs. 1 and 3 so as to allow of
their being more easily cleansed and at the same time there is no probability of their
being lost or getting out of order as is the case where they are being continually
unscrewed for this purpose.
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 construction of Field Marine Opera and other Glasses having the object
lense formed of an oblong square or oval shape substantially as herein described and
shewn in the accompanying drawings.
2. The construction of Field Marine Opera and other glasses having the object
lense secured to the frame of the glasses by means of hinges or their equivalents
substantially as herein described and shewn in the accompanying sheet of Drawings.
Dated this 14th day of September 1889.
CHARLES W. HOBSON.