IMPROVEMENTS SPRING MOTORS
Year: 1880

page_text: IN
LETTERS PATENT to Edwin Ambrose Brydges, of the Firm of Brydges and Co.,
Patent Agents and Engineers, of No. 73, Königgrätzer Strasse, in the City
of Berlin and German Empire, for an Invention of "IMPROVEMENTS
SPRING MOTORS." A communication by Josef Schreiber and Franz Heinrich
Moldenhauer, both of the City of Vienna, in the Austrian Empire.
PROVISIONAL SPECIFICATION left by the said Edwin Ambrose Brydges at
the Office of the Commissioners of Patents on the 5th August 1880.
EDWIN AMBROSE BRYDGES, of the Firm of Brydges and Co., Patent Agents
and Engineers, of No. 73, Königgrätzer Strasse, in the City of Berlin and German
Empire. "IMPROVEMENTS IN SPRING MOTORS." [A communication by Josef
Schreiber and Franz Heinrich Moldenhauer, both of the City of Vienna, in the
Austrian Empire.]
The Invention relates to improvements in spring motors, whereby the superfluous
power of the wound up spring is applied for partially rewinding the spring, and to
attain an equable distribution of the power applied.
The spring is wound up by the superfluous power of the coiled spring until the
amount of power of the spring employed for driving an apparatus or machine and
the power required for winding up the spring are equal.
It is obvious that the duration of the operation of the spring is considerably
increased.
The regaining of power at the same time that power is being applied is attained
in the following manner :-
The spring for driving the motor is contained in a drum in the usual manner,
which is mounted loosely on a shaft or spindle; a second wheel of unequal diameter
with the drum wheel is keyed or otherwise attached to the shaft.
These wheels gear into two wheels keyed or attached to a common shaft, so that a
certain portion of the power given out by the spring is employed to wind the spring
up again. The spring is wound up by a crank attached direct to the axle or shaft
of the spring, or standing in connection with the same by means of intermediate
wheels or by a lever.

page_text: To avoid friction in the mechanism for winding up the spring the last wheel of
the gearing is so provided with a ratchet wheel and pawls that the said ratchet
arrangement revolves in the same direction with the wheel without coming into
operation, but will not permit of a retrograde movement of the said last wheel; this
wheel, which gears into the drum wheel, is provided with this ratchet arrangement,
so that the said wheel comes into operation during the action of the motor, but
remains stationary during the winding up of the spring, as the spring drum is held
stationary during this said winding or coiling up of the spring.
Or the axle or spindle to which the spring is attached can be held stationary, and
the spring wound up by revolving the spring box, case, or cylinder.
In this latter case the spur wheel, which gears into the wheel keyed to the
spring axle or shaft, must be provided with the brake or ratchet arrangement.
For changing the velocity of the motor two friction wheels are so arranged. that
the one wheel revolves in a horizontal and the other in a vertital direction.
The vertical wheel can be moved backwards and forwards on its horizontal
shaft.
Or a pair of conical or step drums can be employed for varying the speed of the
said motor.
For regulating the speed of the motor in case the machine which it drives is
suddenly stopped, a brake regulator is employed.
The brake regulator consists of two brake blocks adjusted by a spring to the
normal velocity, and which are pressed, on the speed increasing, firmly against the
walls of the case, so that the velocity is decreased.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edwin Ambrose Brydges in the Great Seal Patent Office on the 2nd
February 1881.
EDWIN AMBROSE BRYDGES, of the Firm of Brydges and Company, Patent Agents
and Engineers, of No. 73, Königgrätzer Strasse, in the City of Berlin and German
Empire. "IMPROVEMENTS IN SPRING MOTORS." A communication from abroad
by Josef Schreiber and Franz Heinrich Moldenhauer, both of the City of Vienna,
in the Austrian Empire.
The Invention relates to improvements in spring motors, whereby the superfluous
power of the wound up spring is applied for partially rewinding the spring in order
to attain an equable distribution of the power applied.
The spring is rewound by the superfluous power of the coiled spring until the
amount of power of the spring employed for driving an apparatus, machine, &c., and
the power required for winding up the spring are equal.
It will be obvious that the duration of the operation of the spring will thus be
considerably increased.
The regaining of power at the same time that power is being applied is attained
in the following manner :-
The spring for driving the motor is contained in a drum in the usual manner, one
end of the spring being connected to a shaft or spindle, and the other end to the
wall of the drum.
The drum is mounted loosely on the shaft or spindle, to which one end of the
spring is attached, and carries a toothed wheel.
A second wheel of unequal diameter with the drum wheel is keyed or otherwise
attached to the shaft.
These wheels gear into two wheels keyed or attached to a common shaft, so that
a certain portion of the power given out by the spring is employed to wind the
R R
DE
RB
spring up again. (PQ) Pis the power of the spring; Q is the acting power
F B
of the said spring reduced to B
The spring may be wound up by a crank handle attached direct to the axle or
shaft of the spring, or connected therewith by intermediate wheels; or a lever and
rack, as will be more particularly referred to hereafter, may be used.
To avoid friction in the mechanism for winding up the spring one of the gear
wheels is provided with a ratchet and pawl arrangement, the said ratchet and pawl
arrangement rotating in the same direction with the wheel without coming into
operation, but preventing a retrograde movement of the said wheel; this wheel,
which gears into the drum wheel, comes into operation during the action of the
motor, but remains stationary during the winding up of the spring, as the spring
drum is held stationary during the winding or coiling up of the spring.
Or the axle or spindle to which the spring is attached can be held stationary,
and the spring wound up by rotating the spring drum.
In this latter case a spur wheel, which gears into the wheel keyed to the spring
axle or shaft, must be provided with the ratchet arrangement.
For changing the velocity of the motor two friction wheels are so arranged that
the one wheel revolves in a horizontal, the other in a vertical direction.
The vertical wheel can be moved backwards and forwards on its horizontal
shaft.
Or a pair of conical or step drums can be employed for varying the speed of the
said motor.
For regulating the speed of the motor in case the machine which it drives is
suddenly stopped, a brake regulator is employed.
In the accompanying Drawing Fig. 1 is a front elevation of a motor constructed
according to this Invention; Fig. 2 is a plan or top view of the motor with the
table top and the friction wheels removed; Fig. 3 is a side view with the side wall

page_text: to the table removed; Fig. 3a is a section on the line e, s, in Figures 1 and 2;
Figures 4 shew a front and side view of the spring drum and the wheels in con-
nection with the same; Fig. 5 is a section of the wheel with ratchet arrangement;
Fig. 6 represents the arrangement for moving the friction wheel; Fig. 7 is a side
view and section of the brake regulator.
A (Figures 1 to 4) is the spring drum, to which one end of the spring is attached;
B is the toothed wheel attached to the said spring drum; A¹ is the shaft or axle on
which the spring drum A and the wheels B and D are mounted, and to which the
other end of the spring is attached; F is a wheel which gears into the wheel D, and
is keyed to the shaft F¹.
The wheels E and E' are keyed to the opposite end of the shaft F1, the wheel E
gears into the wheel B, and the wheel E¹ into the wheel E³ on the shaft G!.
A pinion G is keyed or otherwise attached to the said shaft G', and is moved
through the rack e, f, or its equivalent, by means of the lever G².
The pinion H, which is attached to the same shaft as the wheel I, gears into the
wheel D; the pinion K. gears into the wheel I, and drives the conical wheels L, M,
the friction wheels N, O, and the step drum P.
A pair of pawls S, S¹, gear into the wheels E¹ and B to act as brakes on the
machine when not in use for driving a sewing machine or other suitable apparatus,
and to prevent the same from making a retrograde revolution in winding up the
spring.
Instead of the pawls other suitable brake arrangement can be employed.
The ratchet movement, Fig. 5, is formed as follows:-In the interior of the
toothed wheel E one or more pawls with springs are arranged, which gear into
ratchet teeth on a sleeve b, which form the hub of the wheel, and is attached to the
shaft F' of the said wheel.
i
To be able to vary the velocity of the machine driven by the motor the wheel O.
is attached to a sleeve c, in a slot of which a pin moves, which causes the
revolution of the wheel P, Fig. 1.
The sleeve can be moved backwards and forwards by means of the lever tand
the fork m, or by means of a foot lever.
The brake regulator, Fig. 7, is constructed and acts as follows:-Two brake
blocks d, d, adjusted by a spring to the normal velocity, are pressed (on the speed
increasing) firmly against the inner periphery of the circular case v until the velocity
is decreased.
Having now described the nature of the said Invention of "Improvements in
Spring Motors," as communicated to me by my foreign correspondents, and explained
the manner of carrying the same into effect, I wish it to be understood that under
the above in part recited Letters Patent I claim,
First. Applying the superfluous power of a wound up spring to partially rewind
up the same, substantially in the manner and for the purpose herein shewn and
described.
Second. The construction of a spring motor for driving sewing and other small
machines, substantially as herein described and shown in the Drawings.
Third. The construction and arrangement of the ratchet wheel and pawls,
substantially as described and shewn with reference to Fig. 5 of the Drawings.
Fourth. The construction of the regulating mechanism, substantially as described
and shown with reference to Fig. 7 of the Drawings.
In witness whereof, I, the said Edwin Ambrose Brydges, have hereunto set
my hand and seal, the 24th day of January, in the year of our Lord. One
thousand eight hundred and eighty one.
EDWIN A. BRYDGES. (L.S.)