mprovements in and connected with the Grinding of the Mouths of Glass Bottles.
Year: 1895

page_text: Date of Application, 5th Feb., 1895
Complete Specification Left, 5th Nov., 1895-Accepted, 7th Dec., 1895
PROVISIONAL SPECIFICATION.
'mprovements in and connected with the Grinding of the Mouths of
Glass Bottles.
I, WILLIAM BAGLEY, of the Firm of Bagley & Co., of Knottingley Glass
Bottle Works, Knottingley, in the County of York, Glass Bottle Manufacturers,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the grinding of the tops of the mouths of glass
bottles.
Hitherto this operation has been effected by holding and pressing the bottles by
hand against a revolving table, and as a result the bottles are frequently unevenly
ground.
According to my invention the grinding of the bottles is effected in a much more
speedy manner than hitherto and with mechanical accuracy.
For this purpose I combine with the ordinary revolving grinding table an
arrangement whereby the bottles to be ground are held in position and revolved
until the mouths are ground to the required extent when the bottles automatically
cease to revolve and are ready to be removed and replaced by others.
For holding the bottles in position on the grinding table and for pressing them
thereon, employ a number of holders of a shape such that the bottles can be
easily placed and revolve therein. These holders are fixed over the table and
so adjusted that when the bottles are placed therein the rough ends of the mouths
project through the bottoms of the holders and rest on the table. Each holder is
provided with a weight for pressing the bottle against the grinding table, sufficiently
to cause the bottle to be revolved by the turning of the table. The underside of
the weight is provided with an elastic cushion which rests on the bottom of
the bottle.
By this arrangement if bottles are placed in the holders and the table revolved
the bottles will also be rotated in the holders in consequence of the projecting ends
of the bottles being pressed by the weights onto the table. The ends of the
mouths will thus be ground, the bottles moving down in the holders as the grinding
proceeds until the shoulder of a bottle comes against a shoulder in its holder and a
the same time the weight comes against and is retained by a seat or ledge in the
holder so that pressure being thus removed from the bottle it will no longer
be rotated by the grinding table and is ready to be removed and replaced.
It will thus be seen that as the bottles are held vertical to the table by the
holders the mouths must be ground square, and that any number of bottles can be
accurately ground to the same dimensions.
Dated this 5th day of February 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in and connected with the Grinding of the Mouths of
Glass Bottles.
I, WILLIAM BAGLEY, of the Firm of Bagley & Co., of Knottingley Glass
Bottle Works, Knottingley, in the County of York, Glass Bottle Manufacturers,
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 relates to the grinding of the tops of the mouths of glass
bottles.
Hitherto this operation has been effected by holding and pressing the bottles by
hand against a revolving grinding disc, and as a result the bottles are frequently
unevenly ground.
According to my invention the grinding of the bottles is effected in a much more
speedy manner than hitherto and with mechanical accuracy.
For this purpose 1 combine with the ordinary revolving grinding disc an
arrangement whereby the bottles to be ground are held in position and revolved
until the mouths are ground to the required extent when the bottles automatically
cease to revolve and are ready to be removed and replaced by others.
For holding the bottles in position on the grinding disc and for pressing them
thereon, I employ a number of holders of a shape such that the bottles can be
easily placed and revolve therein. These holders are fixed over the disc and
so adjusted that when the bottles are placed therein the rough ends of the mouths
project through the bottoms of the bolders and rest on the disc. Each holder is
provided with a weight for pressing the bottle against the grinding disc, sufficiently
to cause the bottle to be revolved by the turning of the disc. The underside of
the weight is provided with an elastic cushion which rests on the bottom of
the bottle.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
:—
Figure 1 is a sectional elevation shewing my improved holder:
Figures 2 and 3 are elevations respectively of the holder proper and of the
weight, and,
Figure 4 is a plan view shewing a number of bolders arranged on a supporting
table in conjunction with a single grinding dise.
a indicates a bottle holder constructed according to my invention, and the
weight which I use in conjunction therewith, c is the plate or table upon which
my holder is mounted, and d is the grinding disc which rotates beneath the
said table c.
As will be seen by reference to Figures 1 and 2, the holder proper is in the form
of a socket adapted to fit the particular bottles to be ground, the said socket,
as shewn, being provided with a flange e by means of which it is bolted to the
table and with recesses, for enabling the bottles to be introduced into and
removed from the said holder: the weight b has its lower part adapted to fit within
the upper part of the socket a so as to bear upon the bottle therein as indicated in
Figure 1, wherein g indicates the bottle, the lower part of the said weight being
recessed to fit around the base of the bottle also as shewn in the said figure.
Upon the weight is a collar placed in such a position that when the said collar
is resting upon the top of the socket the distance between the surface of the said
weight which bears against the bottle and the grinding disc will correspond with
the desired length of the finished bottle. It will of course be understood that when
the bottle is first introduced into the socket and the weight placed upon it, the said

page_text: :
collar does not rest upon the said socket, the weight serving to press the bottle
into contact with the grinding disc when, however, the weight comes to rest upon
the socket it will be understood that no further grinding of the bottle will
take place.
Whilst the bottles are being ground they will also rotate in the holders whereby
an even grinding will take place in case the grinding disc is slightly worn.
In practice I prefer to arrange a series of holders, on a supporting table in
conjunction with the grinding disc, as shewn in Figure 4, all of which can be
attended by a single operator whose only duty is to introduce the unground bottles
and remove them when ground.
I find it advantageous to arrange in the recess in the bottom of the weight 6 a
piece of leather or other elastic material which will thus prevent the metal of the-
said weight from coming into actual contact with the base of the bottles.
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 improvements in grinding the mouths of glass bottles consisting in
inserting the said bottles into holders adapted to receive the same and allowing the
mouths to be ground to project through the bottoms of the said holders in contact
with the grinding disc, substantially as described.
2. Apparatus for use in grinding the mouths of glass bottles comprising a socket
adapted to receive the bottles to be ground and supported above a grinding disc,
and a weight designed to press the bottles into contact with the grinding disc and
to drop with the said bottles as the grinding proceeds until a collar on the said
weight comes into contact with a suitable stop, substantially as described.
3. The improved apparatus for use in grinding the mouths of glass bottles
constructed, arranged and operating substantially as hereinbefore described and
illustrated in the accompanying drawings.
Dated the 5th day of November 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.