Improvements in Cocks or Taps.
Year: 1892

page_text: Date of Application, 18th June, 1892
Complete Specification Left, 18th Mar., 1893-Accepted, 22nd Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Cocks or Taps.
JOHN THOMAS HAILWOOD 186 Ramsey Street Rochdale Lancashire Engineer
do hereby declare the nature of this invention to be as follows
My invention relates to that class of stop cocks, or taps which are formed with a
hollow inverted plug, and the first form of my invention consists of a stud or spindle
inserted into the cavity of the said plug and bearing upon the base of the cavity.
The said stud or spindle has an enlarged head, and is set up or adjusted by means
of a screw with or without lock-nut working in the cap of the shell. Packing of
asbestos or other suitable material is inserted between the adjusting screw and the
head of the spindle. By this means the plug is adjusted and kept in position, and
the usual nut and washer of the small end of the plug are abolished, thus allowing
larger squares or hexagons. I prefer to form a small hole through the centre
of the plug and close the same with a small screw for the purpose of oiling
the tap.
In another form of my invention the spindle is dispensed with, and a hat shaped
stud having perforated sides is inserted between the adjusting stud and the large
end of the plug; packing being used as in the other case.
In a third form of my invention the spindle described in the first form is
continued partially through the plug, and the adjusting screw, tapped into the
centre hole of the plug and provided with a lock nut, bears upon the end of the
said spindle. The adjusting screw at the head end of the spindle is in this case not
required, and the spindle may abut directly upon the inside of the cap, or it may be
formed with, or rigidly attached to the cap.
Dated this 16th day of June 1892.
EDGAR CONISTON MILLS,
Agent to the Applicant.
COMPLETE SPECIFICATION.
Improvements in Cocks or Taps.
I JOHN THOMAS HAILWOOD of Viaduct Works, Ramsey Street, Rochdale, in
the County of Lancaster, 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:-
My invention relates to that class of stop-cocks, or taps which are formed with a
hollow inverted plug, and the first form of my invention consists of a stud or
spindle inserted into the cavity of the said plug and bearing upon the base of the
cavity. The said stud or spindle has an enlarged head, and is set up or adjusted
by means of a screw with or without lock-nut working in the cap of the shell.
Packing of asbestos or other suitable material is inserted between the adjusting
screw and the head of the spindle.
In order that the same may be better understood I refer to the accompanying
drawings.
Fig. 1 is a longitudinal section of a stop-cock constructed in accordance with the
first form of my invention.
Fig. 2. is a cross section of the same.
Fig. 3. is a longitudinal section illustrating the second form of my invention.
Fig. 4. is a longitudinal section illustrating the third form of my invention.
Fig. 5. is an external elevation of a tap constructed in accordance with the first
or second forms-of my invention.--

page_text: In all figures the same reference letters denote the same parts.
A is the body or outer case of the stop-cock or tap. B is the hollow tapered
plug whose smaller end projects beyond the body and has the square, hexagon or
other part b formed upon it to receive the usual key or wrench. C is the cap closing
the hole whereby the plug B is introduced or withdrawn.
My invention consists in the apparatus for "setting up" and adjusting the plug
to its seat as hereinafter described whereby the part b. which receives the key or
wrench is left free and can be made stronger than is possible with the usual method
of adjusting the plugs of such taps.
In the first form of my invention I use the adjusting screw D and spindle E. The
former fits and works accurately within the tapped hole in the
cap C.
The spindle E is formed with an enlargement or head e fitting the accurately
bored recess c in the cap C. Between the head e and the flat end of the screw Ď
I insert a layer of asbestos or other suitable packing F. The other end of the
spindle E abuts against the inner end of the hollow of the plug B, being kept in
place by being turned to fit a recess formed therein. I form the small hole 611
closed by the plug G in order to lubricate the spindle and hollow plug. A lock nut
may be provided upon the screw D to fix it in position.
The steam or other fluid follows the lines as shewn by dotted arrows and the
position of the plug and the pressure by which it is retained upon the seat are
accurately regulated by the screw D.
In the second form of my invention-Fig. 3-the hat-shaped piece H takes the
place and performs the function of the spindle E. It is perforated around the sides
as shewn at h in order to allow the fluid to pass and it abuts by its edge upon the
outer rim or edge of the plug B.
In the third form of my invention-Fig. 4-the adjusting screw D is abolished.
The spindle E is formed without an enlargement and it fits loosely or is secured
into the centre of the cap C. It is continued beyond the hollow of the plug B
passing into a centre hole bored in the plug for the purpose. A screw I tapped
into the continuation of this hole and provided with a lock-nut K abuts against
the inner end of the spindle E as shewn and thus the plug B is drawn to position
and adjusted by the screw I which can be locked in position by the nut K.
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. In hollow plug stop-cocks or taps the screw for adjusting the plug operating
upon and in combination with an internal pressing spindle within the hollow of the
plug whereby the full size of the projecting small end of the plug is available for
the wrench substantially as hereinbefore described and illustrated in the accom-
panying drawings
2. The hat-shaped pressing piece with perforated sides operating upon the larger
end of the plug in combination with an adjusting screw substantially as hereinbefore
described and illustrated in the accompanying drawings.
.3. The prolonged internal stationary spindle within the hollow of the plug
having a rigid abutment at the end resting upon the cap and in combination with
an adjusting screw carried by and tapped into the smaller end of the plug
substantially as herein before described and illustrated in the accompanying
drawings.
4. The lubricating holes and plugs in combination with the adjusting screw and
spindle and hollow plug substantially as herein before described and illustrated in
the accompanying drawings.
Dated this 17th of Mal 1002
EDGAR CONISTON MILLS,
Agent to the Applicant.