IMPROVEMENTS IN CORKSCREWS
Year: 1882

page_text: LETTERS PATENT to Walter James Holroyde of the City of Manchester
in the County of Lancaster Mechanical Engineer for an invention of
IMPROVEMENTS IN CORKSCREWS
PROVISIONAL SPECIFICATION left by the said Walter James Holroyde at
the Office of the Commissioners of Patents on the 23rd March 1882.
WALTER JAMES HOLROYDE of the City of Manchester in the County of
Lancaster Mechanical Engineer IMPROVEMENTS IN CORKSCREWS
This Invention has for its object Improvements in the construction of corkscrews
whereby the drawn cork may be removed from the screw without untwisting it
thus securing a saving of time where a large number of corks have to be drawn
from bottles or other vessels and in all cases avoiding the necessity for removing
the cork from the screw by hand
In carrying out this invention I mount or fix upon the spindle of the corkscrew
a cone of metal or other suitable material having its axis coincident with the axis of
the screw and its point or apex in close proximity to the upper end of the spiral.
This cone may have a plain surface or it may have formed or cut upon it a coarse
screw thread having the same direction of twist as the spiral of the corkscrew The
cork when withdrawn in the usual manner is allowed to remain on the corkscrew,
then upon the screw being inserted into another cork the first cork is driven upon the
cone, being thus expanded and finally split or broken the pieces thereupon falling
away from the instrument and allowing the operation to be repeated on any number
of successive corks

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Walter James Holroyde in the Great Seal Patent Office on the
22nd September 1882.
WALTER JAMES HOLROYDE of the City of Manchester in the County of
Lancaster Mechanical Engineer "IMPROVEMENTS IN CORKSCREWS "
This Invention has for its object Improvements in the construction of Corkscrews
whereby the drawn cork may be removed from the screw without untwisting it
thus securing a saving of time where a large number of corks have to be drawn from
bottles or other vessels and in all cases avoiding the necessity for removing the cork
from the screw by hand.
In carrying out this Invention I mount or fix upon the spindle of the corkscrew
a cone of metal or other suitable material having its axis coincident with the axis of
the screw and its point or apex in close proximity to the upper end of the spiral.
This cone may have a plane surface or it may have cut or otherwise formed upon
it a coarse screw thread having the same direction of twist as the spiral of the
Corkscrew
The cork when withdrawn in the usual manner is allowed to remain on the
corkscrew then upon the screw being inserted into another cork the first cork is
driven upon the cone being thus expanded and finally split or broken into pieces
which thereupon fall away from the instrument allowing the operation to be
repeated on any number of successive corks.
In practise I prefer to form the cone with a plane surface and to fix it upon the
spindle by welding or it may be made in one piece with the spindle in forging or
casting the Corkscrew.
Having thus described and ascertained the nature of my said Invention and the
manner in which the same may be performed, I desire it to be understood that I
do not limit myself to precise details as the same may be varied without departing
from the nature of my Invention but I claim for the purpose hereinbefore set forth
the use of a cone upon the Spindle of a Corkscrew substantially as described.
In witness whereof I have hereunto set my hand and seal this twenty first
day of September in the year of our Lord one thousand eight hundred and
eighty two.
WALTER J HOLROYDE (L.S.)