A Kitchen Boiler Safety Test Cock.
Year: 1895

page_text: Date of Application, 7th Oct., 1895
Complete Specification Left, 8th Jan., 1896--Accepted, 22nd Feb., 1896
ALFRED MALCOLM of 499 Ashton New Road Clayton Manchester Plumber
and Sanitary Engineer do hereby declare the nature of this invention to be as
follows
-
A full way plug or gland cock, of any size as requied (to be fixed on the return
pipe from boiler, in a convenient position immediately it leaves the chimney
breast), with a side nozzle of small size, constructed in such manner, that when the
handle of cock is moved quarter turn, it will at once prove, by the flow "or other-
of water through nozzle, whether there is a free circulation of water through
the boiler or not
Wise
"
The handle is constructed in such manuct that it can be taken off if neccessary,
and it cannot be put on in a wrong direction.
This cock is applicable to any system having a flow and return pipe from boiler,
and any householder or other person can satisfy themselves, before lighting the fire
"that all is perfectly safe," without having to trust to an automatic valve, or
the fear of a leakage through testing the “so called” safety valves.
Dated this 6th day of October 1895.
ALFRED MALCOLM.
A Kitchen Boiler Safety Test Cock.
ALFRED MALCOLM 499 Ashton New Road Clayton Manchester England
Plumber and Samtary 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:-
A full way "gland or plug" cock made of any suitable material, with a small
outlet or nozzle (B) in a convienent position, formed in such manner, that when
the plug of cock (C) is turned a quarter turn, by means of a handle (A) of special
construction, the through passage is closed, and a passage opened from inlet end of
cock, to the aforesaid outlet or nozzle (B).
It is also provided with screwed or tinned unions (D) and a backplate (E) to
facilitate fixing.
"
The cock is intended for the purposes of (a) ascertaining "whether or not,
there is a free circulation of water (in any system of hot water heating and supply)
between the supply cistein and the boiler, (at any time) (b) or when required in
special cases, for emptying the system of water by the following process-
The cock should preferably" be fixed upon the return pipe from boiler,
ummediately the said pipe, passes through the wall of chimney, in a convienent
position, and as near the boiler as possible, and in the direction of the flow of water
as indicated by airow's on drawing.
The top of the plug (C) is formed in the shape of a heart (C), and the
handle (A) is made to fit the heart shaped plug top (C') loosely, so that it can be
taken off.

page_text: When the handle (A) is in the position as shewn in "plan" and "cross section,"
there is a full way for the circulation of the water though it, but when the
handle (A) is turned "quarter turn," between the stops (X) (X) and as shewn by
dotted line in horizontal section, the through-way is closed, and a communication is
made between the boiler and the outlet nozzle (B) when the water could only
travel in one direction v.-from boiler to outlet uozzle (B).
By this means, by tuming the handle (A) as indicated, it would prove
conclusively "whether or not" there is a free circulation of water between the
cistein and the boiler.
Having now particularly described and ascertamed the nature of iny sand inven-
tion, and in what manner the same is to be performed, I declare that what 1
CLAIM
An apparatus whereby a person can immediately, without fear of leakage, and
without having to rely upon the proper working of automatic safety valves,
ascertain "either before or after lighting the fire," whether there is a free
circulation of water through the boiler, and thus avoid any fear or danger of a
boiler explosion.
And in cases of neccessity it can also be used for emptying the system of water.
Also, by the arrangement of the handle (B) it can be taken off, to prevent it
being tampered with, and cannot be put on again in any but the night direction.
Dated this 8th day of February 1896.
ALFRED MALCOLM.