Improvements in High Pressure Cocks or Valves.
Year: 1891

page_text: Date of Application. 13th Apr., 1891
Complete Specification Left, 4th Jan., 1892—Accepted, 20th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in High Pressure Cocks or Valves.
I, ROBERT SAMUEL LLOYD of the firm of Hayward Tyler & Company of
90 and 92 Whitecross Street in the City of London, Engineers, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to afford room for touter spindles and larger
stuffing boxes than heretofore possible in the ordinary high pressure cocks and
valves. For this purpose the lower part of the head top work or cover is formed
with female screw thread and screws on to a male screw thread formed on the body
of the cock. By this means increased interior space is obtained in the head or
cover so that the screw spindle and its stuffing box and gland nut may be increased
in size, which is of especial value for water works conduits and prevents breakages
of the screw spindles. The valve seatings are preferably made metal to metal and
coned flat or raised as desired.
Data: 121 lan of tol 1901
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in High Pressure Cocks or Valves.
I, ROBERT SAMUEL LLOYD of the firm of Hayward Tyler and Company
of 90 and 92 Whitecross Street in the City of London Engineers 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 :-
The object of this invention is to afford room for stouter spindles and better
packing arrangements than heretofore possible in the ordinary high pressure cocks
or valves, and that without increasing the inner and outer dimensions of the neck
part of the casting.
And in order to explain the invention fully I have in Fig. 1 shewn a vertical
section through an ordinary high pressure cock and in Fig. 2 a vertical section
through my improved construction, the subject of my invention.
In Fig. 1 the valve spindle A is screwed through the head cover or cap B and
passes out through a stuffing box, the lower part of the cap being screwed into the
neck (of the body of the casting with intervening packing ring D.
In my improved construction Fig. 2 the neck C is of the same inner and outer
diameter as in Fig. 1 but the valve spindle A is much stouter than it is, or possibly
could be, in Fig. I because the lower part of the head or cap B is screwed down on
to a male screw thread formed on the outside of the neck C, the cap B being for
this purpose formed with corresponding female screw thread. By this means I
thus obtain increased available space in the interior of the head or cap B, so that
the screw spindle A can be made thicker and stronger as already stated with stuffing
box and hexagon part B' to suit, while the joint ring D is kept well in place and
makes a better joint. The valve proper E may be of the form shewn or of any
other suitable form, for instance metal to metal and coned, flat or raised as
desired.
The increase in the strength of the spindle A and of the joint at D are of especial
value in connection with water works conduits.

page_text: 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
In high pressure cocks or valves providing the outside of the neck C with male
screw thread in combination with a cap B provided with corresponding female
screw thread and with recess for holding the packing D in place whereby the
diameter of the screw spindle A can be increased with stuffing box to suit without
increase in the diameter of the neck, as described with reference to Fig. 2.
Dated this 4th day of January 1892.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.