Year: 1888

page_text: Date of Application, 14th Jan., 1888.
Complete Specification Left, 15th Oct., 1888
Complete Specification Accepted, 16th Nov., 1888
1, WALDEMAR KRÖGER ANDERSEN of Osterbro, Copenhagen in the Kingdom of
Denmark, Manufacturer do hereby declare the nature of this invention to be as
follows:
The object of this invention is a valve in which the closing is produced by the com-
pression of an elastic body and the outward thrusting thereof against the rim of the
opening or openings to be closed. For this purpose a spindle is arranged in the casing
having a central cylindrical or prismatic space and above and below the same, screw
threads of contrary direction.
On each of these two contrary screw threads is situated a nut secured against
turning and having a projecting collar extending nearly to the inner wall of the casing.
On the said nuts and projecting beyond the surfaces thereof towards the centre of the
valve, and supported by the flanges on said nuts are cylinders or prisms of rubber or
like elastic material.
When the valve is closed the free space between the two collars on the nuts
respectively opposite to the opening to be closed is filled out by the said elastic
cylinders or prisms which are compressed longitudinally by the collars approaching
each other on the turning of the spindle and pressed at the same time outwardly
against the rims of the opening to be closed. When opening, the elastic cylinders
are moved from each other so as to leave free the passage of the valve.
D
1: 144h day of January 1888
HERBERT & Co.,
Agents to Applicant.

page_text: 1 WALDEMAR KRÖGER ANDERSEN of Österbro, Copenhagen in the Kingdom of
Denmark, 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 relates to valves or stop cocks and consists in certain improvements
therein so as to combine the advantage of secure closing as in a screw down valve
with that of a free and unimpeded flow when open as in a sliding stop cock.
Reference being made to the accompanying drawings. Fig. 1 is a vertical section,
and Fig. 2 a horizontal section of the improved valve or stop cock. The invention
mainly consists in providing to close the opening, by two elastic blocks which are
moved across the opening towards each other from opposite sides so as to meet
and by continued pressure be expanded laterally to securely close said opening. In
the drawings a is the body or chamber of a stop cock adapted to be connected at bb
with pipes. The chamber of the stop cock is so shaped as to provide space for the
blocks cc when the cock is open and enable said blocks to be moved together across
the openings b b so as to close the same as before described. The chamber a is
enclosed by the covers d d one of which is provided with a stuffing box for passage
of the spindle e and the other carries a socket for the foot of said spindle. The
spindle e carries the right and left handed screw threads fg on which engage
respectively the female screw threaded blocks c c flanged outward on the further faces
and carrying the collars 9 g of rubber or suitable elastic material. The spindle e is
provided with a hand wheel h or suitable device for revolving the same. It will be
seen that by revolving the spindle to close the valve the two elastic collars g g are
moved together and on meeting will expand laterally to abut securely against the rims
of the opening bb. The blocks c c are prevented from revolving with the spindle by
suitable lugs thereon engaging in grooves j in the walls of the chamber a.
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 combination of a valve chamber having lateral openings bb with two elastic
blocks adapted to be moved perpendicularly to the axial line of said opening to meet
before said openings and to be expanded laterally to close the same.
e
2. The combination of the two blocks ce having elastic collars g g with the spindle
having right and left handed screw threaded portions ƒ and g traversing said blocks
for the purpose set forth.