IMPROVEMENTS IN STOPPERING DEVICES FOR BOTTLES, AND IN THE CON- STRUCTION OF BOTTLES THEREFOR, AND IN MEANS OR APPARATUS EMPLOYED IN THE MANUFACTURE OF SUCH BOTTLES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by Carl Theodor Burchardt at the Office
of the Commissioners of Patents on the 10th December 1878. A communication
from Nicolai Fritzner, Manufacturer, of Berlin, Prussia, Germany.
CARL THEODOR BURCHARDT, of the Firm of Carl J. Burchardt, of 69, Mauer Strasse,
Berlin, in the Kingdom of Prussia and Empire of Germany, Engineer and Patent
Agent.
"IMPROVEMENTS IN STOPPERING DEVICES FOR BOTTLES, AND IN THE CON-
STRUCTION OF BOTTLES THEREFOR, AND IN MEANS OR APPARATUS EMPLOYED IN
THE MANUFACTURE OF SUCH BOTTLES." A communication by Nicolai Fritzner,
Manufacturer, of Berlin, Prussia, Germany.
The present Invention relates especially to that class of stopper device for bottles
for which Letters Patent were granted to Nicolai Fritzner, dated April 11, 1876,
No. 1534, but is also applicable to other similarly constructed stoppers, and consists
in pivotting the wire lever, frame, or staple, which locks the stopper carrying yoke,
in an improved manner either in suitable indentations or recesses formed according
to this Invention in the bottle neck, or, in case common shaped bottles are used, in
eyes of the neck ring by which the stoppering appliance is fastened to the bottle.
The Invention further consists in the employment of pottery ware in lieu of metal
for the construction of the cap piece which holds down the elastic stopper proper,
and in order to facilitate the manufacture of such porcelain or earthen ware cap it is
furnished with a round hole for the yoke wire and on its underside with a knob
shaped projection on which is slipped an elastic washer of india rubber, leather, or
other suitable material. By using such flat washers with a central hole fitting the
neck of the knob the cost of moulding peculiarly shaped india rubber stoppers is
avoided. The porcelain cap is also less expensive than a metal one and the absence
of a neck ring assists to reduce the cost price of this improved stoppering device.
At the same time the employment of porcelain for the cap keeps the latter clean
and healthy, while the fastening to the bottle of the whole stoppering device by
springing the hooks of the lever frame into the pivot recesses is done in a moment.
On common shaped bottles the porcelain cap may be advantageously used in com-
bination with the neck ring or clip of sheet metal formerly used by springing the

page_text: hooks of the swinging lever frame into the holes in which they formerly worked
but to which they were secured by rivetting, while these hooks are according to the
present Invention made straight and smooth pointed. Even when using metal caps
the swinging lever frame may be altered in such a way that it may be sprung into
the last mentioned holes of the neck ring, so as to have at least the advantage of
easily changing the stoppering device or removing it for the purpose of cleaning and
rinsing out the bottle itself. In order to give to the bottle necks the improved shape
and the pivot indentations or recesses, a forming tool, constructed as follows, is em-
ployed in its manufacture:-To an iron bed are screwed two pointed spurs, the
front one being of a square cross section with broken corners, the back one being
of a round cross section. The vertical section of both is alike and conforms to the
inner shape of the mouth of the bottle. The bed is mounted on an iron handle to
the other end of which two springs are rivetted which terminate in bifurcated solid
prongs. The front branches of the prongs penetrate the bed through slots cut in
the bed, forming by their protruding parts the bearings for two revolving shaping
rollers, which are secured by nuts and washers to the bearings. The springs have a
tendency to move apart as far as the slots in the bed will allow, and the rollers are
so shaped as to match exactly the required outside form of the neck of the bottle
when they are brought together as close as the slots will allow. The back branches
of the prongs which are in line with the back spur bear in suitable places two set
screws, the ends of which are rounded and smooth and without threads, corres-
ponding to the form of the pivot indentations or recesses. The screws are to be
adjusted so as to penetrate or enter into the glass of the bottle neck to the right
depth when the prongs are brought together as close as the slots in the bed will
allow. After the bottle is blown and while still hot or heheated the mouth is shifted
to the front spur, the rollers being apart and the bottle itself being revolved round
its long axis. By pressing together with one hand the two springs the rollers will
be caused to bear on the upper outside part of the revolving bottle until their
advance towards each other is stopped by the slots in the bed when the right
shape of the upper part of the bottle is finished. The pressure on the rollers is now
released, the bottle taken off from the front spur and put on the back spur.
renewed compression of the springs presses the set screws into the glass of the bottle,
which is held steady during this operation, and the pivot indentations will appear
on the right place and in the right shape. The bottle is taken off by again releasing
the pressure on the springs and cooled in the common way, when it is ready to
receive the improved stoppering device.
A