Improvements in Apparatus for Holding Plates or Sheets of Glass while being Ground or Polished.
Year: 1896

page_text: Date of Application, 29th Apr., 1896-Accepted, 30th May, 1896
COMPLETE SPECIFICATION.
Improvements in Apparatus for Holding Plates or Sheets of Glass
while being Ground or Polished.
WILLIAM OLIVER BAILEY Excelsior Glass Works Wenlock Road City Road
London N. Glass Manufacturer 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 is for the purpose of fixing plates or sheets of glass to the table
or other apparatus while being ground and polished, and consists as follows. Any
number of suckers such as is represented in Fig. 1 of the accompanying drawings
are fitted to a glass grinding and polishing table.
a. a is a section of a glass polishing and grinding table.
b. b. is the sucker made of india-rubber and moulded (as represented in Fig. 2)
to fit the metallic fastening d, d, which is formed as shown in section (Fig. 1) with
a cup shaped top, and a screwed extension el e¹ by which it may be adjustable
either higher or lower by means of the milled head F. F. The spindle g. 9 passes
through this latter piece and connects the adjustable nut J. with the two washers, h
and p. which hold the rubber sucker. The washer p is screwed up air-tight, the
india rubber sucker being made thicker in substance in the centre for this purpose
as shown in (Fig. 2). In order to set the sucker in operation the plate or sheet of
glass S. S. is placed upon the suckers and pressure applied, when the ring d is
pressed down depressing the spring d (which may be one or a series of spiral
springs) thus bringing the under face of the glass in contact with the rubber
covering of the table a¹ when the eccentric cam n is turned upon the spindle m.
The spring k expands and pushes down the spindle g. g. which draws down and
expands the rubber sucker b. b. by means of the washer L. when a
formed in the cavity R. so that the plate or sheet of glass S. S. is held tight upon
the face of the rubber suckers and the rubber surface of the table.
I also prefer
to make the rubber suckers with an inside arris C¹ so that when the eccentric cam
is turned again to release the plate of glass the washer h. is pressed up against the
inside edge of the arris on the rubber protecting the cavity R. from sand and dirt
while the plates or sheets of glass are being changed. L. L are bearings for the
spindle m and are fixed to the underside of the table, any number of suckers may
thus be operated at the same time, and several rows may also be connected up by
substituting a sprocket wheel & chain or cog wheels for the hand wheel o. o.
vacuum is
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that
what I claim is.
First. In a machine or table for grinding or polishing plates or sheets of glass.
The application of one or more suckers constructed and operated as herein shown
or described for the purpose of holding or fixing plates or sheets of glass while
being operated upon.
Second. In a machine for polishing & grinding glass a table covered with rubber
as berein described.
WILLIAM OLIVER BAILEY.