Improvements in Cock Plugs and Handles:
Year: 1890

page_text: Jate of Application, 12th Mar., 1890..
Complete Specification Left, 12th Dec., 1890-Accepted, 17th Jan., 1391
PROVISIONAL SPECIFICATION..
Improvements in Cock Plugs and Handles:
I, GEORGE CADE, of No. 6 Suffolk Villas, Putney Road, Enfield Wash, Engineur,
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in cock plugs and handles for all purposes,
but more especially for marino and other boilers, and has for its object to obviate
the leaking of the cock when it becomes worn, owing to unequal wear of the working
parts.
.
According to my invention, the plug is provided at its top with a handle shaped at
one end like a fork, between which, and squared on the top of the plug, is a ratchet
wheel, into which a pawl drops, which also works between the fork, and is pressed
upon by a spring. The fork is kept on the plug by a nut and washer in the ordinary
manner. It will thus be seen that the plug can be turned in one direction only,
consequently it maintains its circular form, instead of being, as in plugs of the
ordinary manufacture, gradually worn into an oval form, by being simply turned
backwards and forwards, thereby causing leakage. By my invention the plug is
prevented from sticking.
I may, if I desiro so to do, joint a rod to the outer extremity of the handle, in order
to more easily open or close the cock, should it be in a high position.
My improved plug and handle can be applied to all cocks of this class as at present
manufactured and used.
A
COMPLETE SPECIFICATION.
Improvements in Cook Plugs and Handles.
1, GEORGE CADE of No. 6 Suffolk Villas, Putney Road, Enfield Wash, Engineer,
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 improvements in cock plugs for all purposes, and handles
for operating the same, but more especially for marine, and other boilers, and has for
its object to obviate the leakage of the cock when it becomes worn owing to unequal
wear of the working parts.
According to my invention, the plug is provided at its top with a handle shaped at
one end like a fork, between which, and squared on the top of the plug, is a ratchet
wheel into which a pawl drops, which works between the fork, and is pressed upon
by a spring. The form is kept on the plug by a nut and washer in the ordinary
manner. It will thus be seen that the plug can be turned in one direction only,
consequently it maintains its' circular form, instead of being as in plugs of the
ordinary manufacture gradually worn into an oval form, by being simply turned
backwards and forwards, thereby causing leakage. By my invention the plug is also
prevented from sticking.
I may, if I desire so to do, joint a rod to the outer extremity of the handle, in order
to more effectually open or close the cock should it be in a high, or distant position:
And in order that my invention may be fully understood, I refer to the accom-
panying drawings, in which Figs. 1 and 2 represent the forked handle A, pawl B, and
spring C. Figs. 3 and 4 represent respectively the ratchet wheel D, and nut and
washer E. Fig. 5 represents my improved forked handle partly in section applied to
a cock plug. In this view the outer extremity of the forked handle takes a different
en

page_text: shape. In Figs. 1 and 2 the handle is shewn with a jointed arm and loop A' for the
purpose of more easily opening or closing the cock should it be placed in a high or
distant position, as hereinbefore stated.
When it is desired to open or close the cock the handle is turned or raised
(according as the cock is in a horizontal or vertical position) till the pawl B, drops
into the wheel D, when the handle is again returned to its former position. On each
successivo opening or closing of the cock the plug is turned in one direction
only, consequently it and its seating are subjected to an equal amount of wear
all round.
.
Fig. 6 shews partly in section, a modified arrangement of the plug and handle, in
which F represents a disc, (in the centre of which is a square hole) resting on the
top of the plug. On the top of this disc are four inclined clutch teeth f. which
correspond to four similar teeth f' on the underside of another disc G, on the top of
which is a square H, to which a handle or spanner may be adapted, for the purpose
of opening or closing the cock. Only two of the teeth of each disc appear in the
section. It will be seen that the square H³, on the plug only extends as far as the top
of the teeth on the disc F. In the top of the square H' a hole is drilled and tapped
to receive the bolt I, which passes through a hole drilled down the squaro H, on the
top of the disc G. The bolt I does not screw down close to the top of the square H,
but is a distance away from the top a little more than equal to the height of the clutch
teeth, in order that the disc G may rise on the disc F, till it nearly touches the under-
side of the bolt. I, when the clutch teeth on the disc G fall over those on the disc F.
If the handle be turned in an opposite direction the cock. will be opened or closed, as
the case may be. By adapting-a-spiral spring J between the bolt I and the handle,
the plug can be used in any position. It will be seen that the top. disc G can rise
oly when the handle is turned in one particular direction. By this arrangement, the
ratchet and pawl hereinbefore described, are dispensed with, as the top disc & falls
over the clutch teeth by its own weight, and is prevented from rising by reason of
the respective backs of the teeth butting against one another, thereby allowing the
cock to be opened or closed.
My improved plug and handle can be applied to all cocks of this class, as at present
manufactured and used.
I wish it to be understood that I do not bind myself to the precise arrangements
hereinbefore mentioned as it is obvious that I may inodify the saine without departing
from the nature of my irvention.
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, with the plug, of the forked handle A, pawl B, spring C, and
ratchet wheel D, substantially as described, and for the purposes set forth.
2. The combination with the plug of the handle A, discs F and G, with teeth f
and, bolt 1 and spring J substantially as shewn and for the purposes set forth.
3. The general construction and arrangement of the several parts, constituting my
improved plug and handle, substantially as described and shewn, by way of example,
in the ang drawinge