Year: 1886

page_text: Date of Application, 8th May, 1886.
Complete Left, 2nd Mar., 1887.
Complete Accepted, 5th Apr., 1887.
We, JOHN ADDY HOPKINSON and JOSEPH HOPKINSON, both of the firm of
J. Hopkinson & Co., of Huddersfield, in the County of York, Engineers do hereby
declare the nature of this invention to be as follows:-
Our invention relates to an improved stop-cock of that class in which the plug is
made tight in the barrel or socket by the aid of jute, hemp, asbestos or otherfibrous,
soft, or Hexible packing.
In the specification of former Letters Patent dated November 21st A.D. 1885
No. 14299, we have described a stop-cock with plug of peculiar construction
arranged in an inverted position in a barrel or socket provided with fibrous packing
inserted in grooves or channels therein. As stated in our specification, we sought by
our said invention to provide against the defects and difficulties which, previous to the
date of our said patent, had been found to attend the use of fibrous, soft, or flexible
packing in stop-cocks.
The peculiarly constructed plug as described in our said former specification has at
one end a flange, collar or head formed solidly thereon, and at the other end a metal
ring or gland: Over the said gland we place a washer and screw-nut, and outside of
the latter we form, on the stem, a square for the reception of the handle. The flange
or head is fitted in a cavity or recess which is closed by a screw cover.
The packing
in the grooves is all enclosed between the two ends of the plug, that is to say, between
the head of the plug and the metal ring or gland, so that by tightening the said nut
upon the stem of the plug compression will be exerted upon the packing at every part
of the same.
According to our present invention we adapt the improvements described in our
said former specification to a stop-cock with its plug in the usual position, that is to
say, not inverted. The barrel or socket is grooved or channelled as described in the
said former specification, and has at its ends annular cavities or recesses in which the
grooves terminate so that the asbestos or other packing placed in the said grooves and
recesses can all be subjected to the same endwise pressure as above described. The
plug has a flange, head, or collar formed solidly thereon, and outside of this flange or

page_text: head it is provided with a handle of any suitable form. The said flange or collar is
fitted in the recess over the asbestos or other packing. The other end of the said plug,
that is to say, the end opposite to that on which the handle is formed or fixed, is
provided with a loose ring or gland which is fitted in the recess over the packing
therein. Outside of this gland we place the adjusting or tightening nut; between
this nut and the surface of the gland we place a metal washer which is so fitted on the
stem as to turn with the same. In some instances we place between the said metal
washer and gland a washer formed of asbestos to diminish the friction in turning the
plug in the barrel or socket.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.

page_text: We, JOHN ADDY HOPKINSON, and JOSEPH НOPKINSON, both of the firm of
J. Hopkinson & Co., of Huddersfield, in the County of York, 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:-
Our invention relates to an improved stop-cock of that class in which the plug is
made tight in the barrel or socket by the aid of jute, hemp, asbestos or other fibrous,
soft or flexible packing.
In the Specification of former Letters Patent granted to us and dated November 21st
A.D. 1885 No. 14,299, we have described a stop-cock with a plug of peculiar con-
struction arranged in an inverted position in a barrel or socket provided with fibrous
packing inserted in grooves or channels therein. As stated in our said Specification,
we sought, by our invention therein described, to provide against the defects and
difficulties which, previous to the date of our said Patent, had been found to attend the
use of fibrous, soft or flexible packing in stop-cocks.
The peculiarly constructed plug as described in our said former Specification has at
one end a flange, collar or head formed solidly thereon, and at the other end a metal
ring or gland. Over the said gland we place a washer and screw-nut, and outside of
the latter we form on the stem a square for the reception of the handle, which is,
therefore, not at that end of the plug to which the handle is applied in ordinary cocks,
so that the plug is inverted relatively to the position of the handle. The flange or
head is fitted in a cavity or recess which is closed by a screw-cover. The packing in
the grooves is all enclosed between the two ends of the plug, that is to say, between
the head and the metal ring or gland, so that, by tightening the said nut upon the
stem of the plug, compression will be exerted upon the packing at every part of the
same.
According to our present invention, we adapt the improvements described in our
said former Specification to a stop-cock which has its plug in the usual position, that
is to say, not inverted relatively to the handle. The barrel or socket is grooved or
channelled as described in the said former Specification and has at its ends annular
cavities or recesses in which the grooves terminate, so that the asbestos or other
packing placed in the said grooves and recesses can all be subjected to the same
endwise pressure as described in our said Specification. The plug has a flange, head
or collar formed solidly thereon and outside of this flange or head it is provided with
a handle of any suitable shape, which may be formed solidly on the plug or attached
thereto in any convenient manner. The said flange or collar is fitted in the recess
over the asbestos or other packing. The other end of the said plug, that is to say, the
end not provided with the handle is provided with a loose ring or gland which is fitted
in the recess over the packing therein. Outside of this gland we place the adjusting
or tightening nut between this nut and the surface of the gland we place a metal

page_text: washer, which is so fitted on the stem as to turn with the same. In some instances,
we place between the said metal washer and gland a washer formed of asbestos to
diminish the friction in turning the plug in the barrel or socket. In other instances,
we use a combined washer and gland, that is to say, the washer is formed integrally
with the gland.
In the accompanying drawings.
Figure 1 is a plan of part of a water-gauge provided with stop-cocks constructed in
accordance with our present invention.
Figure 2 is a vertical central section on the line a, a, Figure 1, some of the parts
being shown in side elevation.
Figure 3 is an underside view of the said water-gange, partly in horizontal section
on the line, e¹, Figure 2, and
Figure 4 is a side elevation, partly in vertical central section, of a straightway stop-
cock constructed according to our present invention.
Like letters indicate corresponding parts throughout the drawings.
a is the barrel or socket; bis the plug, which is formed with the flange, head or
collar and is provided with the combined washer and gland 62 and with the nut 68;
is the handle, which, in the cock shown in Figures 1, 2 and 3, is formed solidly on
the plug. The plug shown in Figure 4 is made with a square for the reception of a
handle. c, c are the grooves and c', c¹ the annular cavities or spaces in which the
asbestos or other packing is placed.
It will be seen that, by our present improvements, we are enabled to dispense with
the screw-cap described in our said former specification, and thus simplify the
construction of the cock.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed we wish it understood that we
claim
The improved stop-cock having its barrel or socket grooved and provided with
packing as set forth in our above named former specification, and having its plug
constructed and arranged therein as herein described.
JOHN ADDY HOPKINSON.
JOSEPH HOPKINSON.
Haseltine, Lake & Co.,
15, Southampton Buildings, London,
Agents for the Applicants.