An Improved Steam Vent for Low Pressure Boilers, Coppers, and the like.
Year: 1889

page_text: Date of Application, 27th May, 1889
Complete Specification Left, 3rd Aug., 1889-Accepted, 7th Sept., 1889
PROVISIONAL SPECIFICATION.
An Improved Steam Vent for Low Pressure Boilers, Coppers, and
the like.
I, CALEB LE FEVRE, junior, of Harrold, in the county of Bedford, Butcher do
hereby declare the nature of this invention to be as follows:-
My invention relates to an improved method of conveying the waste steam from
boilers in which the pressure does not exceed that of the atmosphere, coppers and
furnaces, and other water heating apparatus of a like nature, in which a moveable
lid or cover is employed.
In carrying my invention into effect, I attach to the moveable lid or cover of a
boiler, copper, or like apparatus, a pipe, arranged to move freely within a second
pipe of larger diameter passing upward through the roof, or otherwise opening to
the external air, thus forming a telescopic joint, which allows the lid above referred
to, to be raised when required, and provides for the free emission of the steam when
said lid is closed, so that the apartment or building is free from vapor or fumes.
I may provide a bayonet joint, or a slot and pin, for the purpose of retaining the
lid when raised.
FREDK. WALKER & HYDE,
4, Little Moorfields, London, E.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Steam Vent for Low Pressure Boilers, Coppers, and
the like.
I CALEB LE FEVRE, junior of Harrold, in the County of Bedford Butcher 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 an improved method of conveying the waste steam from
Boilers, Coppers, Furnaces and other water heating apparatus of a like nature, in
which the pressure does not exceed that of the atmosphere, and in which a moveable
lid or cover is employed.
In order that my invention and the method of operation may be fully. understood
I have appended the accompanying Sheet of drawings. Similar letters of reference
indicate corresponding parts throughout the drawings.
Both figures represent the apparatus according to my invention fitted ready
for use.
Fig. 1 is an arrangement by which the steam is conveyed in a vertical direction
through the roof or canopy of the shed or other building in which the copper, boiler
or furnace is located. Fig. 2 is an arrangement of the apparatus whereby the steam
may be conveyed horizontally into the flue of the copper, or boiler, or through the
outer wall of the shed or building aforesaid.
In carrying my invention into effect I attach to the moveable lid or cover A of a
boiler, copper or like apparatus B, a pipe C arranged to move freely within a second
pipe D of larger diameter as shewn in Fig. 2, or as an alternative arrangement upon
a pipe of smaller diameter as shewn in Fig. 1, in either case the steam generated in
the boiler, copper or furnace B passes through a suitable hole in the lid A and
through the roof or other opening to the external air by means of the telescopic
joint C D, thus preventing the presence of steam or vapour in the shed or other
building aforesaid; at the outlet of the pipe DI provide a suitable covering E to

page_text: prevent downdraught, the steam escaping through perforations at F. I may in certain
cases dispense with the lid of the boiler, or copper, and arrange the flange of the
tube C shewn at G of sufficient diameter to answer the same purpose. When it is
desirable to get at the contents of the boiler, or copper, this may be easily effected in
the case illustrated at Fig. 2 by pushing the lid A by means of the handle H in a
horizontal direction thus telescoping the tubes C and D'or in the case as shewn at
Fig. 1 by simply raising the lid A by the handle the weight of which, and the
tube C is counterbalanced by means of suitable weights I and I' attached to cords,
wires or chains K K¹ passing over pulleys LL' fixed to the beam or other convenient
part of the roof of the beforementioned shed, and connected by hooks or other suitable
means to the top of the tube C.
In order to prevent leakage at the junction of the pipes or tubes C and D, 1 provide
a slot or slots in the tube D, shewn by dotted lines M Figure 1, as I find in practice
that any vapor that would otherwise escape at said junction is drawn through the
slot or slots into the tube D by the upward draught. or current of heated air or
vapor therein. In some cases I may provide a bayonet joint or joints upon the tubes
or pipes and D or equivalent means for retaining them in position when raised;
may also, where desirable interpose a valve or damper N to regulate, or check
the escape of steam or vapor at will.
and
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 a vent for boilers, coppers, furnaces and the like, the application and employment
of a telescopic pipe or tube; substantially as and for the purposes herein specified, with
reference to the drawings.
1L: a.
FREDK. WALKER & HYDE,
4, Little Moorfields, London, E.C., Agents for the Applicant.