An Improved Method of Cutting Glass for Spectacles, Optical Apparatus, and other purposes.
Year: 1893

page_text: Date of Application, 25th Apr., 1893
Complete Specification Left. 24th Jan., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
An Improved Method of Cutting Glass for Spectacles, Optical
Apparatus, and other purposes.
I, JOHN ENNIS BOYD of 15 Abercorn Terrace, Harolds Cross Co. Dublin,
Engineer do hereby declare the nature of this invention to be as follows, viz.:
A method of cutting into circular oval or other shape spectacle glasses
whether convex or concave, eye glasses, glasses for optical apparatus of all kinds
and cutting into any given shape glass of any kind for any purpose. I do this by
placing upon the piece or pieces of glass to be cut an ordinary suction plate of the
kind used for window fittings, railway reading lamps &c. and of the shape required,
which is made to adhere to the glass by the pressure of the atmosphere; and by
means of rollers, balls or other revolving arrangement, working upon or in a roller
path on the upper side of the suction plate, or by toothed wheels, cams or discs, an
adjustable diamond fitted to a graduated bar or plate and removable at will, may
be moved over the face of the glass so as to cut it to the desired shape.
COMPLETE SPECIFICATION.
An Improved Method of Cutting Glass for Spectacles, Optical
Apparatus, and other purposes.
I, JOHN ENNIS BOYD of 15 Abercorn Terrace Harold's Cross Co. Dublin,
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:-
A method of cutting into circular oval or other shape spectacle glasses whether
convex or concave, eye glasses, glasses for optical apparatus of all kinds and
cutting into any size or shape glass of any kind for any purpose. I place, by means
of apparatus shewn on drawing herewith, upon the piece or pieces of glass to be
cut an ordinary suction plate of the kind used for window fittings, railway reading
lamps &c. and of the shape required which is made to adhere to the glass by the
pressure of the atmosphere; and by means of rollers balls or other revolving
arrangement working upon or in a roller path on the upper side of the suction
plate or by toothed wheels, cams or discs an adjustable diamond fitted to a
graduated bar or plate and removable at will may be moved over the face of the
glass so as to cut it to the desired shape.
The body of the apparatus which consists of the roller path and suction rubber is
made of different shapes viz. circular for cutting round glasses, oval for oval glasses
and other shapes for glasses of other shapes and is removable from below, the
handle being unscrewed from above; the diamond with the arm which carries it
being also detachable so that when round glasses are required the diamond and arm
are attached to the circular body and when oval or other glasses are required
the circular body is removed as above described and the oval or other shaped body
substituted for it, the diamond and arm being attached. The arm (N.) is moved
by the hand in circular, oval or other direction as may be required. The rollers D
are attached to revolving arm by means of bolts and nuts passing through same,
marked K.