Improvements in Electric Bells and Motors.
Year: 1890

page_text: Date of Application, 25th Aug., 1890
Complete Specification Left, 24th Oct., 1890-Accepted, 10th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Electric Bells and Motors.
JOSEPH TOWNLEY 877 Old Kent Road London S.E. in the County of Surrey
Engineer do hereby declare the nature of this invention to be as follows:-
A contrivance attached to the ordinary form of electric bells or motors in which the
magnetism is retained in the armature until it reaches a certain point also for com-
pleting a circuit and breaking the same automatically by means of a wheel having
projections on its periphery.
In its application to electric bells the arrangement of this invention is as
follows.
An ordinary electric bell mounted with the usual electro-magnet and armature as
per annexed drawing. By touching the push P. the circuit is completed, and a current
flows along the line through the terminal T to the contact pin A through the bell
crank B round the cores of the electro-magnet through T¹ thence to point from which
it started. The usual magnetic field is produced the armature is attracted in which
the induced magnetism is retained until the adjusting screw C comes into collision
with the bell crank B which moves on its centre thus breaking the circuit. In the
same movement of the armature a second adjusting screw C¹ comes into collision with
the wheel D having projections on its periphery by which it is turned a portion of a
revolution at each stroke of the armature. This wheel D is attached to a spindle having
a portion of its periphery insulated E which during the revolution of the wheel allows
a spring F attached to pin A to again complete the circuit the current taking another
direction through the terminal T2 along the line to the battery B' thus allowing the
same movement to be repeated entirely independent of that portion of the circuit from
which contact was first made the wheel continuing the revolution until such time the
spring F comes again into contact with the insulated portion of the spindle E by
which the circuit is finally broken automatically and the armature becomes at rest.
In its application to notors a lever is placed between the armature and the crank of
the motor one end of the lever being attached to a pivot on the armature the other
end attached to the crank of the motor the circuit being made as already stated the
armature is attracted taking with it the lever which turns the crank of the motor half
a revolution when the circuit is broken by the adjusting serew C moving the bell
crank B and the armature returning to its original position turning the crank of the
motor the other half of the revolution when again the same movement is repeated as
already described.
JOSEPH TOWNLEY.
COMPLETE SPECIFICATION.
Improvements in Electric Bells and Motors,
JOSEPH TOWNLEY 877 Old Kent Road London S.E. in the County of Surrey
Engineer 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:-
A contrivance attached to the ordinary form of electric bells and motors in which
the magnetism is retained in the armature until it reaches a certain point necessary to
do work also for completing a circuit and breaking the same automatically by means of
a wheel having projections on its periphery.
In its application to electric bells the arrangement of this invention is as
follows.

page_text: An ordinary electric bell mounted with the usual electro-magnet and armature as
per drawings accompanying Complete and Provisional Specifications. By touching
the push P the circuit is completed and a current flows along the line through the
terminal T to the contact pin A, through the bell crank B, round the cores of the
electro-magnet through T¹ thence to point from which it started. The usual magnetic
field is produced the armature is attracted in which the induced magnetism is retained
until the adjusting screw C comes into collision with the bell crank B which moves on
its centre thus, breaking the circuit at the contact pin A. The armature returning to
its original position allows the hell crank B to return automatically to its normal
position by means of gravitation. In the same movement of the armature a second
adjusting screw C₁ comes into collision with the wheel D having projections on its
periphery by which it is turned a portion of a revolution at each stroke of the
armature. This wheel D is attached to a spindle having a portion of its periphery
insulated E which during the revolution of the wheel allows a spring F which is
attached to pin A to again complete the circuit the current taking another direction
through the terminal T2 along the line to the battery B₁ thus allowing the same move-
ment to be repeated entirely independent of that portion of the circuit from which
contact was first made the wheel continuing the revolution until such time the
spring F comes again into contact with the insulated portion of the spindle E by
which the circuit is finally broken automatically and the armature becomes at rest.
The said arrangement is also embodied as per drawing Fig. 4 where the pivotted
adjustable lever Cactuates simultaneously both the wheel D and the bell crank B
during the stroke of the armature. On the wheel D is fixed a pin G with which at
the end of a revolution moves a similar bell crank H (to the one B) these bell cranks
having one extremity turned down so as to cause a sliding contact or rubbing surface
so as to ensure always a bright surface on the face of the pins I and A made to receive
them. The pivotted lever J is introduced to prevent the wheel D returning after
having been moved by the pivotted adjustable lever C on the armature. The current
taking a course similar to the one already described ultimately brings the armature to
a state of rest.
In its application to motors a lever is placed between the armature and the crank of
a motor one end of the lever being attached to a pivot on the armature the other end
attached to the crank of the motor the circuit being made as already described the
armature is attracted taking with it the lever which turns the crank of the motor half
a revolution when the circuit is broken by the adjusting screw C moving the bell
crank B, and the armature returning to its original position turning the crank of the motor
the other half of the revolution when again the same movement is repeated as already
stated. This arrangement may be multiplied according to the power requisite to drive
motor or it may be arranged in pairs as shewn on drawing Fig. 5. By touching the push P,
the circuit is completed and a current flows along the line through the terminal T to
the contact pin A through the bell crank 12 round the cores of the electro-
magnet No. 1, through the terminal T thence to point from which it started. The
usual magnetic field is produced the armature is attracted in which the induced
magnetism is retained until the adjusting screw C comes into collision with the bell
crank B2 which moves on its centre thus breaking the circuit at contact pin A. During
the stroke of the armature towards the electro-magnet No. 1 the wheels M and L are
turned half a revolution by means of the connecting levers N and O, which are
attached to the armature at one end and also to the pins fixed on the wheels M and L
at the other end. These wheels M and N are geared into the wheel P¹ and by them
is turned a portion of a revolution at each stroke of the armature. In this arrange-
ment as shewn Fig. 5, it is necessary that the current should flow through the electro-
magnets No. 1 and No. 2 at different intervals so that the armature is attracted first
by one and then by the other so as to give a continuous rotary motion to the wheel P¹.
This is attained by having the connecting link K attached to both the bell cranks B
and B³ both these bell cranks being actuated by the adjusting screw C attached to the
armature, so that in the stroke of the armature towards the electro-magnets No. 1 the
circuit is broken at pin A by the adjusting screw C coming into collision with the bell

page_text: crank B2 which working on its centre moves connecting link K and brings the bell
crank B³ to make contact on pin A¹ thus completing the circuit for the electro-
magnet No. 2 which attracts the armature in the opposite direction to that of the
electro-magnet No. 1 thus giving the rotary motion to the wheel P¹in a manner similar
to that already described.
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) A new kind of electric bell as hereinbefore described with bell cranks having
sliding contacts or rubbing surfaces in combination with a wheel so adapted to make
and break a circuit automatically.
(2) The combination of parts (similar) for driving a motor.
(3) The manufacture and use of the automatic electric bell and motor as herein-
before described and illustrated in the accompanying drawings.
Dated this 22nd day of October 1890.
JOSEPH TOWNLEY.