Means and Apparatus for Utilizing the Exhaust from Steam Engines for Heating, Drying, and other Purposes.
Year: 1891

page_text: Date of Application, 21st Jan., 1891
Complete Specification Left, 18th Aug., 1891-Accepted, 19th Sept., 1891
PROVISIONAL SPECIFICATION.
Means and Apparatus for Utilizing the Exhaust from Steam Engines
for Heating, Drying, and other Purposes.
I, RICHARD MAKIN of 12 Kenyon Road, Wigan in the County of Lancaster,
Manager, do hereby declare the nature of my said invention to be as follows:-
This invention refers to improvements in or relating to compound and condensing
steam engines for heating, drying, and other purposes, and consists in providing
means for heating mills, weaving sheds, and other buildings, drying stoves, and for
boiling size, and other purposes with steam from either cylinder of compound steam
engines, or the exhaust pipe connecting the cylinders, or from the cylinders of
condensing steam engines. This effect by means of valves attached to the drain
tap pipes or other convenient parts; and operate the said valves so as to emit a puff
of steam each stroke of the engine or otherwise. The mechanism for operating the
valves can be of any suitable description according to the class of engine, and
operated from the most convenient part. When the valves are applied to cylinders
the operating mechanism is so constructed or arranged as to allow of the valves
being opened during the admittance of steam and closed when exhausting. In
applying the valves to the pipes connecting high and low pressure cylinders in
compound engines they are opened and closed at the most convenient part of the
stroke so as not to interfere with the economical working of the engine. Back.
pressure valves are provided where necessary. Steam that is emitted through the
valves is conveyed through pipes and connected to the usual pipes employed for
heating and other purposes described above.
Dated the 19th January 1891
EDMUND CHADWICK,
A cent
COMPLETE SPECIFICATION.
Means and Apparatus for Utilizing the Exhaust from Steam Engines
for Heating, Drying, and other Purposes.
I, RICHARD MAKIN of 12 Kenyon Road, Wigan in the County of Lancaster,
Manager, do hereby declare the nature of my said 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 refers to improvements in or relating to compound and condensing
steam engines for heating, drying, and other purposes, and consists in providing
means for heating mills, weaving sheds, and other buildings, drying stoves,
and. for boiling size, and other purposes with steam from either cylinder of
compound steam engines, or the exhaust pipe connecting the cylinders, or from
the cylinders of condensing steam engines. This I effect by means of valves
attached to the drain tap pipes or other convenient parts; and operate the said
valves so as to emit a puff of steam each stroke of the engine or otherwise. The
mechanism for operating the valves can be of any suitable description according to
the class of engine, and operated from the most convenient part. When the valves
are applied to cylinders the operating mechanism is so constructed or arranged as
to allow of the valves being opened during the admittance of steam and closed
when exhausting. In applying the valves to the pipes connecting high and low
pressure cylinders in compound engines they are opened and closed at the most
convenient part of the stroke so as not to interfere with the economical working of
the engine. Back-pressure valves are provided where necessary. Steam that is

page_text: emitted through the valves is conveyed through pipes and connected to the usual
pipes employed for heating and other purposes described above.
Fig. 1 is a part side elevation of so much of a steam engine as is necessary to
illustrate my invention.
Fig. 2 is an end view, and Fig. 3 is a plan of compound engines showing a
modification of my invention for heating mills, weaving sheds, drying stoves, boiling
size, and other purposes.
A is a high-pressure cylinder; B a low-pressure cylinder; C the piston rod;
D the crosshead; E the crosshead centre; F the drain pipes; G the drain taps;
H the exhaust pipe for conveying steam from high-pressure cylinder A to low-
pressure cylinder B; I, I, are slashing frames; J, J drying cylinders; K, K size-
boxes, and L is intended to represent a weaving shed, mill, or other building to be
heated.
To the drain pipes F at each end of the steam cylinders A or B I attach the
valves M fitted with the levers N, to the end, or otherwise, of which are pivoted
the arms O carrying the pivoted bowls P. The latter are operated by the inclined
blocks Q, as they are slid backwards and forwards by the rod R, levers S, and
links T from the crosshead centre E according to the movements of the engine.
The levers S are fixed on the shaft or centre A¹ mounted in the bearings or
pedestals B'. The blocks Q can be of any suitable length according to the time it
is desired to emit exhaust steam from each end of the cylinders A or B. The
blocks are connected by means of the bar U, which may be adjustable or
otherwise. The sliding blocks Q are mounted in the slide bar V secured to the
foundation of the engine or otherwise according to the class or make of engine or
engines. As the blocks Q slide to and fro the inclinės thereon operate on the
bowls P, and lift the levers N of the valves M when the exhaust steam is being
emitted from the steam cylinder. The pivoted arms O are fitted with the pro-
jections W which operate and lift the levers N when the blocks Q are making.
a forward stroke, i.e., when travelling with the incline on the leading side.
Immediately each forward stroke is completed the arms and bowls P ride or
slide on the upper surface of the blocks Q, thus allowing the levers N to drop and
close the valves M by means of the weights X mounted thereon. As the bowls P
are liberated by the backward stroke of the blocks Q the arms O will automatically
adjust themselves to the position shown in Fig. 1 ready for the next forward stroke.
When a puff or other quantity of exhaust steam is emitted through the valves M
from the cylinder A or B it passes through the pipe Z, from whence it can be
conveyed to the usual pipes employed for heating mills, weaving sheds, and other
buildings, drying stoves, drying cylinders, boiling size, and other purposes. The
sliding blocks Q can be operated by any other suitable mechanism to that shown
in the drawings according to the class or make of engine, and can be actuated from
any other part, such as, direct from the crank or other shaft and valve spindle or
spindles, by means of eccentric, levers, and rods, or their equivalents.
If
In applying this invention to compound engines the before mentioned operating
nechanism can be dispensed with, in which case the pipe Z is coupled direct to the
valve-box of the low-pressure cylinder B as shown in Fig. 3. The pipe Z in this
case is fitted with the screw stop valve Y to regulate the outlet from same.
desired the pipe Z and stop valve Y can be coupled to the exhaust pipe H
connecting the cylinders A and B, as shown in dotted lines in Fig. 3. The pipes Z
can be carried in any convenient manner to slashing frames I, for the purpose of
charging the drying cylinders J and the size-boxes K as shown. The pipes K can
be fitted with the reducing valves P1 to reduce the pressure in the drying cylinders .J,
size-boxes K, and shed or other building L as desired or requisite according to
varying circumstances. When the pressure of exhaust steam is sufficiently low for
the purposes required the reducing valves P' can be dispensed with.
An important advantage of this invention is that through utilizing exhaust steam
at a low-pressure little or no amount of power is lost, resulting in most cases in an
improved vacuum in the condensing cylinder and a considerable saving in fuel,

page_text: 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 method of utilizing exhaust steam from steam engines for heating mills,
weaving sheds, and other buildings, drying stoves, drying cylinders, boiling size,
and other purposes, substantially as herein described.
2. For carrying out the method described in the preceding claim, the respective
constructions, combinations, and arrangements of apparatus, substantially as
described and illustrated in the annexed drawings, or by other equivalent means
according to the class or make of engine or engines.
Dated August 19th 1891
EDMUND CHADWICK,
Agent.