Year: 1887

page_text: Date of Application, 28th Nov., 188?
Complete Specification Left, 28th Aug., 1888
Complete Specification Accepted, 12th Oct., 1888
I, FREDERICK THOMAS SCHMIDT, of Hustlergate, Bradford in the County of York,
Electrical Engineer, do hereby declare the nature of this invention to be
follows:-
:-
as
The object of this invention is to operate the striking hammer of mechanical gongs
by means of electricity, and in such a manner that, the hammer is only operated so as
to give one stroke for each time the electric circuit is closed, whether it be closed for
a short period or for any length of time, the result to be the same, that is only one
stroke of the hammer, and before another stroke can be made the circuit must be
broken and then the contact closed as before.
I accomplish my object in the following manner: The apparatus is so arranged as
to be applicable to mechanical striking gongs now in use, which are put in motion
whenever liberated, by a coiled spring or weights applied similar to those of an
ordinary time clock.
1 secure to the frame of the mechanical portion of the gong in any convenient
position, a pair of electro magnets, and attach thereto one end of a movable and
independant armature, to the other end of which is secured by preference a flat
spring, having a piece of metal at its outer end, somewhat similar to the head of
a small hammer; so that whenever the electrical circuit is closed, the magnets
attracting the independent armature cause the hammer at the end of the spring to
strike a bar with such force that, it releases the striking mechanism for a sufficient
length of time to enable the gong hammer to make a single stroke; when it is again
at rest, by reason of the before mentioned spring not being of sufficient strength,
to overcome the action of another spring, that holds an armature back from a
notch in a bar in connection with the bar struck by the small hammer.
On breaking the circuit the small hammer and independent armature leave the
electro magnets and strike another blow on closing the circuit.
Dated this 96th day of November 1887

page_text: I FREDERICK THOMAS SCHMIDT, of Hustlergate, Bradford, in the County of York,
Electrical 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 :—
The object of this invention is to liberate the striking hammer of mechanical
gongs by means of electricity, and in such a manner that, the hammer is only
operated so as to give one stroke, or if so arranged, two or three strokes in rapid
succession each time the electric circuit is closed; whether it be closed for a short
period, or for any length of time the result to be the same; that is, only one
stroke, or two or three in rapid succession; and before it is again operated, the
circuit must be broken and a contact made as before.
The invention consists in mounting to the frame of the apparatus a pair of
electro magnets, and in combination therewith is an armature hinged at one end,
and to the opposite end is secured a flat spring having a hammer attached thereto,
which, on the magnets attracting the armature, strikes a bar with such force that,
the striking mechanism is released for the gong hammer to make a single stroke,
or two or three in rapid succession according to the arrangement of the apparatus.
In explaining my invention more in detail, reference is made to the accompanying
drawings, in which Fig. 1 represents an elevation of a mechanical striking gong with
my improvement attached thereto. Fig. 2 an end view, Fig. 3. a detail of the arm
for operating the gong hammer, and Fig. 4. a view of the gong and hammer.
The mechanism for operating the gong hammer may be actuated by a coiled spring
or weights applied somewhat similar to those of an ordinary time clock; the drawing
shows an apparatus fitted with a coiled spring in barrel A, on the shaft of which is a
spur wheel B geared to the pinion on fly shaft F, by intermediate gearing C, and C¹,
to which no claim is made as forming part of this invention.
To the frame D of the mechanism, I secure a pair of electro magnets E having the
usual connecting wires attached thereto; and to the magnet frame E¹, is hinged an
armature G and G¹, to the other or loose end of which is secured a flat spring G³,
having a piece of metal H at its outer end.
Another armature J is hinged to the frame D, and has a spiral spring $ or other
spring attached to, or in connection therewith, for the purpose hereinafter described;
the said armature being prepared with an arm J extending for a short distance
beyond the normal position of the piece of metal or hammer H on spring G³, at end of
armature G.
On the intermediate shaft K is fixed a cam L, which may have one or more
projections thereon as required, the number combined with the number of pins T on
the face of the wheel C¹ regulating the strokes it is desired the gong hammer Q should
make, each time the apparatus is put in motion.

page_text: The apparatus is in its normal position as shown by Fig. 1, and on closing the
electrical circuit, the magnets E attract the armature G, thereby causing the
hammer H at end of spring G³, to strike the arm J¹ on armature J with such
force that, the said armature is moved from the position shown such a distance
that, the notch in lever M is allowed to fall on end of armature J, by which
means, the catch arm N on fly shaft F is liberated; thereby allowing the mechanism
to revolve, and the pin or pins T projecting from the face of wheel C¹, to operate
the lever R and gong hammer Q, (both of which are secured on shaft R) thereby
causing the said hammer each time the lever R¹ is raised by a pin T, to strike
the gong the number of strokes being proportionate to the number of pins T on
the face of the wheel C¹, and the projections on cam L.
The spring G is of light section, and of such strength that when the armature G is
attracted, the strength of spring and force of the blow is sufficient to overcome the
tension of the spiral spring S, so as to move the armature J the distance for
allowing the lever M to drop as before described: but when the hammer H is at rest,
the tension of the spring S is such, that when the lever M is again raised, the
armature J is drawn back against the stop pin P as shown by Fig. 1; the light
spring G allowing the armature J to be moved even when the electro current has not
been broken.
When the lever is raised by the cam L, it is held in the position shown by the
catch arm N coming in contact with the raised part M¹ of the lever M, thereby
stopping the rotation of the mechanism, until the armature G is again attracted, and
J displaced as before described.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,
1. A mechanical striking gong combined with a pair of electro magnets E and
armatures G and J for operating the lever M, substantially in the manner and for the
purpose herein set forth.
2. A coiled spring or a weight equivalent in combination with the magnets E,
substantially in the manner shown and described and for the purpose set forth.
3. The cam L in combination with the lever M, rotating catch arm N, magnets E,
armatures G, and J, and gong hammer Q for the purpose set forth.
Dated this 97th day of August 1888.