Improvements in Machines for Cutting, Grinding, and Polishing Glass.
Year: 1886

page_text: Date of Application, 10th Nov., 1886.
Complete Left, 30th July, 1887.
Complete Accepted, 23rd Sept., 1887
DESEO
PROVISIONAL SPECIFICATION.
Improvements in Machines for Cutting, Grinding, and
Polishing Glass.
I, ADOLPH OESTREICHER of Nürnberg, in the Empire of Germany, Merchant, do
hereby declare the nature of this invention to be as follows :-
This invention relates to improvements in machines for cutting, grinding and
polishing glass, and consists in the employment of two horizontally rotating discs,
fixed above each other respectively on two vertical shafts mounted in suitable bearings,
the upper disc or lower face thereof acting as a grinding or polishing surface..
The glass to be operated upon is fixed on a table capable of adjustment to any
desired degree of inclination, on a frame or carriage and is brought into contact. with
the grinding or polishing surface by means of a rack and gearing, or otherwise.
The lower disc, viz., upper face thereof is constantly supplied with grinding or
polishing material from a suitably fixed reservoir, and delivers the same directly to
the grinding or polishing surface of the upper disc by reason of the centrifugal action
imparted thereto by the rotation of the lower disc.
Dated this 27th day of October 1886

page_text: I, ADOLPH OESTREICHER, of Nürnberg in the Empire of Germany Merchant, 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:
My invention relates to improvements in machines for cutting grinding and
polishing glass, and the object of my improvements is to provide such machines
with horizontal planes, the means by which these horizontal planes work from above
on the planes to be ground or polished while these pieces are placed at any desirable
angle to the horizontal plane; and furthermore, to provide à continuous supply of
polishing material.
And in order that my invention may be better understood I have caused to be
appended hereunto one sheet of drawings, marked with letters of reference indicating
like parts in the various figures.
Fig. 1 is a general view.
Fig. 2. is partly side view, and vertical section. Fig. 3 is a plan.
The frame C moves on the rails g by means of the wheels situated in the
grooves l.
The frame D, the top of which is at a, is connected with the frame C by the
hinges a', and can be placed to the frame C at any angle desired, by means of
the toothed shafts z fastened to D by the small hinges s.
These toothed shafts are put in motion by the cogged wheels t, which have their
common axle on the rod p, embedded in c. The cylinder H serves to guide the
upright shaft G which is put in rotation through the driving wheel K, and bears at
its lower end the grinding disc F.
Through the supporting screw m which has its nut in the bracket L, the grinding-
disc F is placed in position.
Of the same, or similar construction are, the cylinder P, the shaft O, the driving
wheel Q, and the supply disc N; this supply disc N, is placed in position by means
of the support m, which has its nut in the bracket L'.
The manner of operating this machine is as follows:-A plane of glass E is
fastened to the frame D, and brought by the movable contrivance s, z, t, into any
angle necessary to obtain the facet required. The grinding disc F is then placed in
position on the edge of the glass plane E, and put in rotation.
After using a disc of iron, one of stone is substituted, for the purpose of smoothing,
which is again replaced by one of willow for the purpose of polishing.

page_text: The arrangement of the second supply disc N together with that of funnel R (into
which a jet of water may be conducted whenever necessary,) is such as to form a
feeder for N; sand, water powdered pumice-stone or the like, are brought from the
funnel to the surface of N, and in this way the bases of the grinding discs are furnished
with these materials.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is :-
1st. The arrangement of the frame C together with the frame D, which serves to
receive the plane of glass E, in such a manner, that the frame D, can be placed at any
angle to C, desired, and the angle thus obtained is ground as a facet on E by means
of the disc F as set forth.
2nd. The arrangement of a second revolving disc N situated at the side of and
directly under disc F, in such a manner as to serve alone, or in connection with
funnel R, for the purpose of admitting continuously any grinding mixture to the base
of disc F, as set forth.