Improvements in and connected with Electric Bells, Gongs, and the like.
Year: 1896

page_text: Date of Application, 2nd July, 1896
Complete Specification Left, 1st Apr., 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in and connected with Electric Bells, Gongs, and
the like.
We, MAX BYNG, Electrical Engineer, and FRANCIS GEORGE BELL, both of
No. 71 Queen Victoria Street in the City and County of London do hereby
declare the nature of this invention to be as follows:-
Our invention relates to certain improvements in, and connected with electric
bells gongs and the like, and has for its object the production of a better and more
sonorous impact than can be produced by the ordinary vibratory action of an
electro magnet with an automatic make and break contact as heretofore made and
in common use.
In carrying our invention into effect we employ any suitable electric motor upon
the armature spindle of which is mounted a hammer or striker with a jointed head.
This may be single or double, and be so adjusted that when the motor is set in motion,
the action of centrifugal force causes the jointed head or heads to strike the bell
or gong, and to trip after impact so as not to check the vibration of the gong or
the like. The motor and gong or the like may be mounted in any, suitable
manner, and may be operated by a push, switch or any other contrivance for
making or breaking an electrical contact. We arrange the armature and commutator
of the motor so as to act as a continuous striking device or as a single stroke,
employing a counterweight -to bring the hammer into the normal position after
each stroke.
. We do not confine ourselves to the employment of any particular type of motor
or contact device, the essential feature of our said invention being in the rotary or
semi-rotary movement of a hammer or hammers or striker or strikers with a
jointed head or heads, so as to strike an electric bell, gong or the like either
continuously by means of a succession of strokes, or by a single stroke upon the
completion of the electric circuit.
Dated this 26th day of June 1896.
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicants.
Improvements in and connected with Electric Bells, Gongs, and,
the like.
We, MAX BYNG, Electrical Engineer, and FRANCIS GEORGE BELL,
Electrician both of No. 71 Queen Victoria Street, in the City and County of
London, 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 :-
Our invention relates to certain improvements in, and connected with electric

page_text: bell gongs, and the like, and has for its object the production of a better and more
sonorous impact than can be produced by the ordinary vibratory action of an
electro-magnet with an automatic.make. and break contact as heretofore made and
in common use.
In order that our invention may be clearly understood we have appended the
accompanying sheet of drawings in which
Figure 1 is an elevation of a bell to which the improved striking appliance is
adapted and Figure 2 is an elevation of a modification thereof.
Figure 3 is a plan view of a cross arm applicable to Figure 2, drawn to a larger
scale.
Similar letters of reference indicate corresponding parts throughout the several
views.
In carrying our invention into effect we employ any suitable electric motor,
preferably encased to preserve it from deterioration by exposure. Said motor is
shown by M, Figure 1, and its armature spindle is disposed horizontally relatively
to the suspension of the bell A. Upon said spindle S is mounted a rod R carrying
at one end a counterweight W, and at the other end a jointed head H, pivotted
at p, and forming a haminer or striker. When the electric motor is set in motion,
the action of centrifugal force causes the jointed head H to strike the bell A and,
trip after impact as shown by the dotted outline, so as not to check the vibration
of said bell. We may substitute a second pivotted head similar to H, for the
counterweight W, and in either case a continuous stroke is produced. The
armature and commutator are arranged so as to be self-starting from the normal
position of rest, and the circuit may be established by means of a switch, push, or:
any similar device.
As an alternative, or modification of the apparatus as hereinbefore described, we
may place the spindle of the motor to operate vertically, as shown by the part
sectional elevation Figure 2. The motor M is attached to the body of the bell A:
by the bracket or frame B, and the axial line of the spindle S is eccentric to that
of said bell. The spindle S carries a cross bar T from the ends of which depend
two hammers or strikers H H' by chains or other linked suspensions c c. When
the motor M is caused to rotate, the strikers H H¹ assume the position shown by
the dotted outline, striking the bell A twice during each revolution.
}
We may use a crossbar as shown by T Figure 3, which has two angular recesses
upon its face, into which fit two tripping plates P P₁ pivotted to T by the set
screws pp, the shanks of which fit freely in the longitudinal slots ss so that P P¹
are capable of free movement outwards against the tension of a spiral spring t.
Two strikers or hammers H H' are formed upon or fixed to the tripping plates P P¹,
and the cross bar T is fitted to the spindle S of an electric motor so that it may
revolve in a vertical or horizontal position in the proximity of a bell or gong.
When rotated, the action of centrifugal force causes P and P to slide outwards,
increasing the striking radius of H H, against the tension of the spring t.
each impact the tripping plates P P₁ trip as shown by the dotted outline, the
spring t restoring them to their original position after impact.
Upon
Having now particularly described and ascertained the nature of our said. inven-
tion and in what manner the same is to be performed, we declare that what we
claim is;"
י,
First. In an electrically operated bell or gong, the construction and use of a
striker. or hammer, pivotted to a rod attached to the spindle of a rotary electric
motor arranged horizontally, with a counterbalance, as herein described with
especial reference to Figure 1 of the appended drawings.
Second. In an electrically operated bell or gong, the construction and use of a
cross bar attached to the spindle of an electric motor arranged vertically, and
eccentrically with suspended hammers or strikers, as herein described with especial
reference to Figure 2 of the appended drawings.
Third. In an electrically operated bell or gong, the construction and use of a

page_text: cross bar with slotted trip plates, carrying hammers or strikers, controlled by a
spring attached to both, in combination with a rotary electric motor substantially
as herein described and shown by Figure 3 of the appended drawings.
Dated this 31st day of March 1897.
FREDK. WALKER,
73 St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicants.