Improved Means applicable for use in Indicating, Registering, Communicating, and Economizing Motive Power, and in Preventing Shocks to Machinery.
Year: 1891

page_text: Date of Application, 28th May, 1891
Complete Specification Left, 28th Mar., 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improved Means applicable for use in Indicating, Registering,
Communicating, and Economizing Motive Power, and in
Preventing Shocks to Machinery.
We, JOSEPH ARMYTAGE WADE, Timber Merchant, of Hornsea, in the East
Riding of the County of York, and Jonx CHERRY, Mechanical Engineer, of
Hornsea aforesaid, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improved means applicable for use, first, in ascertaining
and indicating the power of, or the amount of work being performed by, a motor
engine actuated by steam, water or other fluid under pressure, by the explosion of gas
or vapour, by electricity or by any other source of power; secondly, in ascertaining
the power communicated to a machine or system of machinery through a rotating
shaft thirdly, in assisting to overcome "dead" centres; fourthly, in economizing
motive power by providing, means for absorbing and subsequently utilizing any
excessive power suddenly given out by the motor; and, lastly, in preventing or
lessening shocks in engines or machinery, thereby reducing wear and tear.
We prefer to carry out our invention in the following manner :- We make the
boss of the fly-wheel, gear-wheel or driving rigger in halves; both halves being
keyed or otherwise secured to the shaft. This wheel (hereinafter called the
"fly-wheel ") is loosely mounted on the boss, so as to be capable of rotating
thereon independently for part of a revolution. The inner face of each half of the
boss is formed with a cavity or cavities, in which spiral springs are arranged;
eight springs, four in each half of the boss, being a convenient number. These
springs are separated by chocks arranged at equal distances apart. Half the
chocks are bolted to the fly-wheel; the others being bolted to the boss. These
chocks serve to separate, and act as abutments for, the spiral springs. One of
the chocks bolted to the fly-wheel is provided with a pin which projects through, and
works in, a slot in the outer portion of the boss. A casing is attached to the said
outer portion. The casing contains a pivoted toothed sector and a pivoted dial;
the sector engaging with a pinion secured to the centre of the dial. The pin is
connected to an arm extending from the sector. The outer part of the casing is
made with an aperture through which one of the numbers on the dial can be seen;
the aperture, if at the end of a shaft, being concentric with the fly-wheel, or, if the
shaft be a through shaft, as near the circumference of the shaft as possible.
The operation of the parts is as follows:-When, owing to excessive power being
given out by the motor, the shaft rotates momentarily faster than the fly-wheel,
half the chocks approach the other half, and part of the spiral springs are
compressed beyond their normal state of compression; the other springs expanding.
When, owing to decreased power being derived from the motor, the fly-wheel
rotates momentarily faster than the shaft, the reverse action of the chocks and
consequently of the springs takes place. In either case, each of the springs
gradually acquires its norinal amount of compression as the parts resume their
original relative positions; the effect of the springs so acting in combination
tending to turn the fly-wheel or the shaft in one direction or the other, thus acting
with or against the motor, as the case may be, and regulating its action, as
hereinafter more particularly referred to. The independent movement of the
fly-wheel in respect to the boss, or vice versú, is indicated by the extent to which
the dial has been turned by the pin and sector. By noting the position of the dial
in regard to the aperture, the amount of work which is being performed by the
engine at any given time can be readily ascertained. When certain of the springs

page_text: are compressed to a degree beyond the normal extent, the power so absorbed by
the springs serves, on being given out again, to help the engine to force the crank
or cranks over the "dead"centres. Further, the absorption of power by certain
of the springs and the subsequent giving back of that power tends to prevent
excessive or suddenly-diminished speed; thus indirectly regulating the working of
the engine. Concussion arising from shocks on the breakage of the engine or
machinery would, to a great extent, be absorbed by the springs damage to the
unbroken part of the plant being thus avoided or greatly reduced.
They may be
The number of
Less or more than eight springs may, if preferred, be employed.
arranged round the boss in a single instead of in a double row.
chocks carried by the fly-wheel and boss may likewise be increased or decreased.
When it is not required to ascertain and indicate the power, the dial and its casing
may be dispensed with. The boss, instead of being made in halves, may be in one
piece and have a suitable cover. The springs, instead of being carried by that part
of the boss keyed to the shaft, may be carried by that part of the boss to which the
spokes are united.
: Dated this 28th day of May 1891.
G. G. M. HARDINGHAM.
191, Fleet Street, London, E.C., Agent for the Applicants.
:
COMPLETE SPECIFICATION.
Improved Means applicable for use in Indicating, Registering,
Communicating, and Economizing Motive Power, and in
Preventing Shocks to Machinery.
We, JOSEPH ARMYTAGE WADE, Timber Merchant, of Hornsea, in the East
Riding of the County of York, and JoHN CHERRY, Mechanical Engineer, of
Hornsea aforesaid, 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 :-
This invention relates to improved means applicable for use, first, in ascertaining
and indicating or registering the amount of work being performed by, or the
power of, a motor engine actuated by steam, water or other fluid under pressure,
by the explosion of gas or vapour, by electricity or by any other source of power;
secondly, in ascertaining the power communicated to a machine or system of
machinery through a rotating shaft; thirdly, in assisting to overcome "dead
centres; fourthly, in economizing motive power by providing means for absorbing
and subsequently utilizing any excessive power suddenly given out. by the motor
and, lastly, in preventing or lessening shocks in engines or machinery, thereby
reducing wear and tear.
In the accompanying drawings,
"
j
Fig. 1 is a side elevation of a fly-wheel or driving rigger fitted with our
invention.
Fig. 2 is a similar view with the indicating device omitted and part of the boss
broken away to expose the spiral springs.
Fig. 3 is a section on the line 3, 3 in Fig. 1; Fig. 4 being a section on the
line 4, 4 in Fig. 1.
Fig. 5 is a view of the indicating device with the cover removed.
Fig. 6 illustrates a modified form of indicating device.
The boss A A of the fly-wheel B, gear-wheel or driving rigger is preferably
made in halves; both halves A and A being keyed or otherwise secured to the
shaft C. This wheel (hereinafter called the "fly-wheel") is loosely mounted on
the boss A A¹, so as to be capable of rotating thereon independently for part of
'a revolution. The inner face of the half A of the boss A A is formed with a
cavity a* or cavities, in which spiral springs D1 D2 D3 D* are arranged. The

page_text: inner face of the 'half 'A' is similarly formed and furnished with similar springs.
These springs are separated' by chocks E' E' E3 E arranged at equal distances
apart. The chocks E and E³ are connected to the fly-wheel B by the bolts b
and the other chocks E and E being fixed to the boss A A¹ by the bolts a
and a¹.
These chocks serve to separate, and act as abutments for, the spiral
springs. The chock E' is provided with a pin e which projects through, and
works in, a slot el in the outer half (A) of the boss. A casing F is attached to
the said outer half. The casing contains a toothed sector pivoted on the
'pin f¹ and a dial pivoted on the pin f³; the sector engaging with a pinion fa
secured to the centre of the dial 2. The pin e passes through a slot in the arm fx
of the sector. The outer part of the casing is made with an aperture f, through
which one of the numbers on the dial can be seen; the aperture,, if at the end of a
shaft, being concentric with the fly-wheel, as shewn. If the shaft be a through
shaft, the aperture is as near the circumference of the shaft as possible.
The operation of the parts is as follows:-Supposing, for example, that the
shaft C is rotating in the direction indicated by the arrow y, and that, owing to
excessive power being given out by the motor, the shaft C is rotating momentarily
faster than the fly-wheel B, the chocks E E approach the chocks E' E':
the springs D D₁ being compressed, beyond their normal state of compression,
and the springs D₁ D³ expanding. When, owing to decreased power being derived
from the motor, the fly-wheel B rotates momentarily faster than the shaft C, the
reverse action of the chocks and consequently of the springs takes place; the
springs D D being compressed beyond their normal state of compression, and
the springs D D expanding. In any case, each of the springs, after a differential
movement between the wheel and the boss has taken place, gradually acquires its
normal amount of compression as the parts resume their original relative positions ;
the effect of the springs so acting in combination tending to turn the fly-wheel
or the shaft in one direction or the other, thus acting with or against the motor, as
the case may be, and regulating its action, as hereinafter more particularly referred
to. The independent movement of the fly-wheel in respect to the boss, or vice
vers, is indicated by the extent to which the dial has been turned by the pin e
and sector ffx. By noting the position of the dial in regard to the aperture fo,
the amount of work which is being performed by the engine at any given time
can be readily. ascertained. When certain of the springs are compressed to a
degree beyond the normal extent. the power so absorbed by the springs serves, on
being given out again, to help the engine to force the crank or cranks over the
"dead
centres. Further, the absorption of power by certain of the springs and
the subsequent giving back of that power tends to prevent excessive or suddenly-
diminished speed; thus indirectly regulating the working of the engine. Concussion
arising from shocks on the breakage of the engine or machinery would, to a great
extent, be absorbed by the springs; damage to the unbroken part of the plant being
thus avoided or greatly reduced.
In Fig. 6, a pin a³ and slides are substituted for the dial and the means
employed for working the same. The pin a³ is attached. to the half A of the
boss A A¹; the slides sliding in the hub of the fly-wheel B. When there is
a differential movement between the fly-wheel and the shaft, the pin a³ moves the
slide or which is held by friction in the extreme position to which it is
moved, thus registering the power transmitted. The scale shows the extent
to which either slide or both slides has or have been displaced. After the power
registered bas been noted, the slide or slides may be pushed back into its or their
normal position.
When
Less or more than eight springs may, if preferred, be employed. They may be
arranged round the boss in a single instead of in a double row. The number of chocks
carried by the fly-wheel and boss may likewise be increased or decreased.
it is not required to ascertain and indicate the power, the dial and its casing may
be dispensed with. The boss, instead of being made in halves, may be in one piece
and have a suitable cover. The springs, instead of being carried by that part of

page_text: the boss keyed to the shaft, may be carried by that part of the boss to which the
spokes are united.
Having now particularly described and ascertained the nature of this invention
and in what manner tlic same is to be performed, we claim :-
1. For indicating, registering, communicating and economizing motive power,
and preventing shocks to machinery, the improved means arranged and operating
substantially as described with reference to the accompanying drawings.
2. The combination, with a fly-wheel, gear-wheel or driving rigger B connected
to chocks E E³ and mounted rotatively on a boss A A¹ furnished with chocks E2 E*,
of the spiral springs arranged between the chocks, substantially as and for the
purposes set forth.
3. The combination, with a fly-wheel, gear-wheel or driving rigger B connected
to chocks E E³ and mounted rotatively on a boss A A¹ furnished with chocks E' E',
of the spiral springs arranged between the chocks, and a device for indicating or
registering the differential movement between the wheel and the boss, substantially
as and for the purposes set forth.
4. The combination, with a fly-wheel, gear-wheel or driving rigger B connected
to chocks E' E' and mounted rotatively on a boss A A₁ furnished with
chocks E E, of the spiral springs arranged between the chocks, the pin e, the
sector ff, the dial f, the pinion f, and the aperture f³, substantially as and
for the purposes set forth.
5. The combination, with a fly-wheel, gear-wheel or driving rigger B connected
to chocks El E³ and mounted rotatively on a boss A. A' furnished with chocks E' E',
of the spiral springs arranged between the chocks, the pin a³, the slides b³, and
the scale, substantially as and for the purpose set forth.
6. The combination, with a fly-wheel, gear-wheel or driving rigger B connected
by bolts to chocks E¹ E3, which work in a boss A A¹, of the boss A A¹
furnished with chocks E' E' secured in position by bolts a a', and the spiral
springs arranged between the chocks, substantially as and for the purposes set
forth.
Dated this 9th day of March 1892.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.