Apparatus for Controlling Gas or other Motive Power when Applied to Work Organ Bellows.
Year: 1889

page_text: Date of Application, 4th July, 1889
Complete Specification Left, 5th Apr., 1890-Accepted, 24th May. 1890
PROVISIONAL SPECIFICATION.
Apparatus for Controlling Gas or other Motive Power when
Applied to Work Organ Bellows.
JOHN MELVIN of Saint Rollox Iron Works, Glasgow, in the County of Lanarkshire,
Engineer do hereby declare the nature of this invention to be as follows:-
This Invention has for its object, the automatic controlling of the intermittent
power required to work organ bellows and feeders, while at the same time, the gas
or other engines employed to work same remain running at a constant speed or
nearly so.
The parts of an organ to which the improved apparatus is applied are the feeders
and bellows, the former receiving the power and discharging the wind they produce
into the latter which acts as a reservoir. While wind is being taken away, from the
bellows, the feeders are then required to work so as to keep up the supply. Also
when the bellows are full and no wind being drawn, the feeders are then required
to stop.
One modification of my improved apparatus consists of an intermediate shaft
through which the power is communicated from engine to feeders. This shaft is
placed over engine, and has a large belt pulley fixed to it opposite a smaller one on
engine shaft. A slack belt passes round these pulleys and the slackness or tightness
of said belt is controlled by means of a weighted lever to which is fixed a small
pulley for bearing against the belt. The lever is connected by rods, levers or other
suitable means to bellows, so that while bellows rise the belt gradually slackens, or
when they fall, the belt gradually tightens.
Intermediate shaft has a belt pulley fixed to it for driving feeders when a
rotary motion is required, or shaft may have cranks for a recriprocating
motion.
Another modification consists in employing friction wheels to drive intermediate
shaft in place of a belt. The said wheels are brought into or out of contact with each
other by means of a weighted lever at one end of intermediate shaft. This lever
swings at one end on a fixed centre and is provided with an eccentric bearing to
receive end of intermediate shaft. The lever is connected to, and moves along with
bellows in a similar way as already described for the former modification.
Dated this Fourth day of Inly 1889
JOHN MELVIN.
COMPLETE SPECIFICATION.
Apparatus for Controlling Gas or other Motive Power when
Applied to Work Organ Bellows.
JOHN MELVIN of Saint Rollox Iron Works, Glasgow, in the County of Lanarkshire,
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:
so.
This invention has for its object, the automatic controlling of the intermittent
power required to work organ bellows and feeders while at the same time the gas or
other engines employed to work same remain running at a constant speed or nearly
In order that my invention may be properly understood & readily carried into
effect I have appended hereunto 2 sheets of drawings, shewing two modifications by
which my invention may be carried into practice. Of these drawings Fig. 1 is an
elevation & Fig. 2 plan shewing one modification of my invention. A is the bellows
reservoir and underneath are shewn the bellows feeders B B worked by the rotating
Prins 21

page_text: crank shaft D and connected to it by the rods C C. On one end of crank shaft D
is fixed the large belt pulley E over which runs a slack belt F to engine pulley G.
His a small flanged bearing pulley running loose on a stud fixed on the weighted
crank lever I. This lever I swings on a fixed stud M and is connected to the bellows
reservoir A by a rod J fixed at one end to the lever I and at the other end to
a lever K rocking on a fixed stud 0.
A weight L is fixed on the end of rocking lever K heavier than that on the crank
lever I. A rope N reaching from the weighted end of crank lever I to floor and
having a hook to slip into an eye screwed to the floor is provided so that the
engine may be started more easily without having to drive the bellows crank
shaft D by keeping down the weighted end of cranked lever 1 and consequently
not allowing the bearing pulley H to tighten belt F. When engine is running and
wind required for organ the hook is unfastened from the floor and this allows
the weight L above reservoir A to fall and the weighted crank lever I to rise
thereby bringing the bearing pulley H into contact with the belt F and gradually
tightening it until it drives round the large belt pulley E and the bellows crank
shaft D and causes the bellows feeders B to discharge wind into the reservoir A
which rises and lifts the weight L on end of lever K thus allowing the weighted
crank lever I to fall and relieving the strain of bearing pulley H on belt F slackening
it and thereby stopping the bellows crank shaft and feeders when reservoir
is full.
Another modification of my invention is shewn in elevation Fig. 3 and plan
Fig. 4. As in Figs. 1 and 2 the arrangement of bellows reservoir, feeders and crank
shaft with large pulley are similar but the method of controlling the power from
engine is applied as follows.
is a driving belt which runs over large belt pulley on feeder crank shaft to belt
pulley A¹ on one end of intermediate shaft B¹. Intermediate shaft B¹ carries on end
opposite belt pulley A¹ a friction pulley D¹ which is placed opposite to another friction
pulley D on engine shaft.
One end of intermediate shaft B revolves in a bracket C¹ and other end in an
eccentric bearing E¹ which is fixed to the weighted lever F¹ swinging on a stud G¹
fixed on a bracket (2. A rocking lever is provided with weight and rod connecting
weighted lever F' also rope and hook to floor similar to arrangement shewn on
Figs. 1 & 2. The controlling of the bellows in the foregoing arrangement consists in
the friction pulley D' being brought to bear or recede from the friction pulley D'
when the bellows fall or rise, by the action of the eccentric bearing E' fixed on the
weighted lever F¹ which is connected to the bellows reservoir with rod and rocking
lever as in Figs. 1 & 2.
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-
1st. The general arrangement and combination of parts constituting my apparatus
for controlling gas or other motive power to work organ bellows substantially as
hereinbefore described with reference to the drawings annexed.
2nd. In apparatus for the purpose set forth the arrangement and combination of
same for the purpose of gaining an intermittent power from a constant power either
by means of a slack belt running from the driving pulley to the driven pulley and
made to tighten or slacken by a small bearing pulley on the belt or by means of 2 friction
pulleys one of which preferably the driven one is made to bear or recede from the
driving pulley, operating substantially as described with reference to the appended
drawings.
JOHN MELVIN.