Improvements applicable to Steam Hoists for Ashes or other Materials, to Starting and Reversing Engines, to Steering Engines and to the like.
Year: 1899

page_text: Date of Application, 19th Aug., 1899
Complete Specification Left, 18th May, 1900-Accepted, 7th July, 1900
Improvements applicable to Steam Hoists for Ashes or other
Materials, to Starting and Reversing Engines, to Steering Engines
and to the like.
We, JAMES JACK GALLOWAY and THOMAS LINDSAY GALLOWAY, both of 43,
Mair Street, in the County of Glasgow, North Britain, Engineers, do hereby
declare the nature of this invention to be as follows, that is to say:-
Our said invention relates to machines of the kind in which a steam cylinder
has combined with it an hydraulic cylinder to regulate the speed of action by
the rate at which the water can pass from one end of the hydraulic cylinder to
the other through a restricted passage or passages.
In such a machine as hitherto made the water in the hydraulic cylinder is apt
to diminish through leakage or evaporation, and on the other hand there is apt to
be considerable condensation of steam in and connected with the steam cylinder,
especially when the machine is used intermittently. By our invention we
utilise the condensed steam to maintain a proper quantity of water in the
hydraulic cylinder.
In carrying out our invention in the case of an ashes hoist, for example, we
arrange the cylinders vertically the steam cylinder being uppermost and there
being an enclosed space between them. The two pistons are connected by a
rack-toothed bar, which gears with a pinion on a shaft extending through the side
of the middle chamber. The cylinders are open towards each other and any water
condensed in the steam cylinder flows directly down to the hydraulic cylinder.
An overflow outlet may be provided for excess of water, or on the other hand
water condensed from live steam or from the drainage of other engines may be
introduced to make up any deficiency. The hoisting barrel is worked by the
pinion shaft either directly or through gearing, and steam is admitted to and
exhausted from the steam cylinder by means of any suitable known arrange-
ment of valve apparatus.
In starting and reversing engines the cylinders may in some cases be placed
vertically; our improvements may however also be adapted for cylinders placed
in a horizontal or inclined position for starting or steering or other analogous
operations. When, as in such cases, the steam piston has to be double-acting
both ends of the cylinder being closed, drainage taps for water of condensation
are provided in connection with each end and are put in communication with
the respective ends of the hydraulic cylinder.
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page_text: Improvements applicable to Steam Hoists for Ashes or other
Materials, to Starting and Reversing Engines, to Steering Engines
and to the like.
We, JAMES JACK GALLOWAY and THOMAS LINDSAY GALLOWAY, both of 43,
Mair Street, in the County of Glasgow, North Britain, Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say:
Our said invention relates to machines of the kind in which a steam cylinder
has combined with it an hydraulic cylinder to regulate the speed of action by
the rate at which the water can pass from one end of the hydraulic cylinder to
the other through a restricted passage or passages.
In such a machine as hitherto made the water in the hydraulic cylinder is apt
to diminish through leakage or evaporation; and on the other hand there is
apt to be considerable condensation of steam in and connected with the steam
cylinder, especially when the machine is used intermittently. By our invention
we utilise the condensed steam to maintain a proper quantity of water in the
hydraulic cylinder.
In carrying out the invention in the case of an ashes hoist for example the
steam and hydraulic cylinders are arranged vertically the steam cylinder being
uppermost, and the steam which acts on the top side of the piston only is
adimitted to and exhausted from the cylinder by means of any suitable well
known arrangement of valve apparatus. The cylinders are open towards each
other and there is an enclosed chamber or space between them so that any water
condensed in the steam cylinder flows directly down to the hydraulic cylinder.
An overflow outlet is provided on the middle chamber for excess of water; or on
the other hand water condensed from live steam or from the drainage of other
engines may be introduced to make up any deficiency in the hydraulic cylinder.
The two pistons are connected by a rack-toothed bar which gears with a pinion
on a shaft extending through the side of the middle chamber, the pinion shaft
gearing with a shaft having on it the hoisting pulley or drum, or in some cases
the second motion shaft may be dispensed with, and the hoisting pulley fixed
on the pinion shaft.
In starting, steering and reversing engines where the cylinders may be placed
in a vertical horizontal or inclined position, and where the steam piston is
double acting both ends of the cylinder being closed, drainage traps for water
of condensation are provided in connection with each end of the cylinder, and
are put in communication with the hydraulic cylinder by suitable pipe connections.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append a sheet of explanatory drawings
to be hereinafter referred to in describing the improvements.
Figure 1, of the drawings is a vertical section, and Figure 2, is a side elevation
of the improvements according to one modification. Figure 3, is a vertical section
of the improvements according to another modification. In these drawings the
same reference letters and numerals are used to mark the same or like parts
wherever they are repeated.
In carrying out the invention in the case of ashes hoists, for example as shown
in Figures 1, and 2, the cylinders, A, and B, are arranged vertically, the steam
cylinder A, which is uppermost being jointed to an enclosed middle chamber, C,
formed between the cylinders: The two pistons A 1, B 1, are connected by a rack-

page_text: toothed bar or piston rod, B2, which gears with a pinion, D, on a shaft, D1,
extending through the side of the middle chamber, C. The cylinders, A, B, are
open towards each other so that any water condensed in the steam cylinder, A.
flows directly down to the hydraulic cylinder, B. An overflow outlet, E, fitted
with a discharge pipe, E 1, provided on the middle chamber, C, for draining off
excess of water, while on the other hand water condensed from live steam or
from the drainage of other engines may be introduced by an inlet (not shown)
to make up any deficiency in the water cylinder, B. The hoisting drum or
pulley, G, is worked by the pinion shaft, D1, preferably through intermediate
gearing, a spurwheel, D2, on the pinion shaft, 11, gearing with a pinion, D3,
on the hoisting pulley shaft, G 1. An indicator, H, is provided for indicating the
position of the bucket or other article being hoisted, the indicator being driven
by means of a worm, H1, on the hoisting shaft G 1, gearing with a worm
wheel, H2, on the indicator shaft, H 3. The apparatus is like-
wise provided with a friction brake, F, of ordinary construction.
The steam piston A, is single acting receiving steam on the top
side only, and the bucket or other article is hoisted during the down
stroke of the pistons, the pistons being thereafter returned to their top positions
by means of a counterpoise. Steam and exhaust passages, J, K, are formed in
the steam cylinder, A, and any suitable well known arrangement of valve appara-
tus is provided in connection therewith for regulating the steam admission and
exhaust. A pipe, L, is provided which communicates with both ends of the
hydraulic cylinder, B, through upper and lower openings, L1, L2, and the speed
of action of the hoist is regulated by the rate at which the water can pass from
one end of the cylinder to the other through the pipe. An adjusting valve, L3,
is fitted across the pipe, L, for varying the size of the water passage, and
an alteration can be made in the rate at which the water passes out of either
end of the cylinder by adjusting the valve to suit. Or instead of or in addition
to the connecting pipe, L, a hole or passage (not shown) may be formed through
the piston, B1, to permit the water to pass from one side of the piston to the
other. The steam exhaust outlet, K, is placed some distance from the top end
of the cylinder, A, so as to cause a sufficient quantity of steam to be left in the
cylinder to effectively cushion the piston, A 1, on its upward stroke. The lower
water outlet, L2, is similarly placed with respect to the bottom of the cylinder, B,
so as to cause a sufficient quantity of water to be left in the cylinder to effectively
cushion the piston, B 1, as it approaches the end of the cylinder.
In the modification shown in Figure 3, in the case of starting, steering, or
reversing engines, where the cylinders may be placed in a vertical, horizontal,
or inclined position, and where the steam piston is double acting, both ends
of the cylinder being closed, the main exhaust pipe of the steam cylinder (the pipe
and cylinder not being shown) is formed with a trap bend for receiving water
of condensation from the steam cylinder; and a pipe, L4, is connected to the
drainage trap and to the water pipe, L, communicating with both ends of the
water cylinder, B, the piston, B1, of which is connected to the piston of the
steam cylinder by a plain piston rod, B3. The pipe, L, has upper and lower
branch connections, L5, L6, fitted with adjusting valves, L7, LS, for regulating the
action of the water in the hydraulic cylinder, and the spindles, M1, M2, of The
valves are fitted with levers, M3, M4, which are connected to a rod, N, conncted
to the steam starting valve handle (not shown) so that the adjusting valves can
be opened and closed simultaneously with the steam valve of the engine. If
preferred, however, the adjusting valves may be worked by a separate handle.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. In steam hoists for ashes or other materials, a steam, and an hydraulic or
water cylinder arranged vertically with the steam cylinder uppermost, the
cylinders being fixed end to end and open towards each other, with an enclosed

page_text: middle chamber between them, the water cylinder being provided with a valved
connection or passage communicating with both ends of the cylinder and provided
likewise with an overflow outlet, and with or without an inlet for extra water
of condensation, the pistons of the cylinders being connected by a rack-toothed
bar gearing with a pinion on the hoisting drum or pulley shaft or on a shaft
connected by gearing with the hoisting shaft, the parts being constructed
arranged and operating substantially as and for the purposes herein before des-
cribed with reference to Figures 1, and 2, of the accompanying drawings.
2. In starting reversing and steering engines and the like in which both ends
of the steam cylinder are closed, a drainage trap formed on the main exhaust
pipe, or arranged so as to be in communication with the ends of the cylinder, the
trap being connected to a pipe having branch valved connections
communicating with both ends of an hydraulic or water cylinder substantially
as and for the purposes hereinbefore described with reference to Figure 3, of the
accompanying drawings.
Dated this Seventeenth day of May 1900.
EDMUND HUNT,
Applicants' Agent.