Improvements in Alarm Bells, applicable for Cycles and for other purposes.
Year: 1892

page_text: Date of Application, 19th Nov., 1892
Complete Specification Left, 19th Aug., 1893—Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Alarm Bells, applicable for Cycles and for other
purposes.
I, GUSTAVE WILHELM MÖHRSTÄDT of 42 Howard Street Birmingham
Mechanical Engineer and Manufacturer do hereby declare the nature of this
invention to be as follows:-
:—
This invention relates to cycle and other bells and alarms on which 2, 3, 4, or
more domes can be used to reproduce different sounds according to the domes
applied. In making this bell, I make a suitable frame to carry the several domes
required and the necessary mechanisms for working the clappers which produce
the sounds or notes. The mechanism is enclosed within the domes. The frame is
so constructed that it can he fastened to a cycle or other article by means of a
claw, or clip, fixed by a pivot to the frame, and actuated by a screw. To facilitate
the fastening, or unfastening, as the case may be, to the cycle or any round or
otherwise configured article it is merely necessary to loosen the screw a little and
swing the claw or slip round.
The bell is actuated by a lever fastened to the central spindle or pivot. On this
spindle or pivot are fastened two toothed wheels which work the clappers by means
of a reciprocating escapement, so that by turning the central spindle either way,
the toothed wheels will move the escapement which in its turn moves the clappers,
and so strike the domes. In order to bring the clappers back again to their original
positions, two or more peculiarly constructed spiral springs are used, which are made
in such a manner that both ends of each of the springs actuate in the same way and
so obviate the necessity of having two springs instead of one.
They are held in the frame by studs or pins slotted through the centre.
To produce a continual ringing of the bell two or more spiral springs are so
placed on the central, or main spindle or pivot, on which the toothed wheels and
lever are fixed, that by pushing the lever one way, the spiral springs will bring it
back again to its starting point.
To prevent the clip, or claw from injuring the part whereon it is fastened, and to
ensure a better hold, I provide a lining inside the clip, such lining to be made of
leather or any other suitable material.
Dated this 18th day of November 1892.
GUSTAVE WILHELM MÖHRSTÄDT.
COMPLETE SPECIFICATION.
Improvements in Alarm Bells, applicable for Cycles and for other
purposes.
I, GUSTAVE WILHELM MÖHRSTÄDT Mechanical Engineer and Manufacturer of
42 Howard Street Birmingham 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 bells and alarmns suitable for cycles and for other
purposes on which 2, 3, 4, or more domes can be used to produce different sounds
according to the domes applied.
The object of my invention is to make a bell or alarm which will produce 3 or
more different sounds by the adoption of smaller domes within the outer domes
together with simple mechanism neccesary to produce the sounds.

page_text: In order that my invention may be better understood, I will now proceed to
describe the same and how the same is to be performed.
In the accompanying drawings,
Fig. 1. is an elevation of the bell shewing the lever by which the bell is sounded
and the clip by which it is fastened to a cycle or other article.
Fig. 2. is a section of a four domed bell shewing the frame with the double
mechanism for four domes and clip with pivot or screwpin and nut.
Fig. 3 is a section shewing the pinion or toothed wheel on the central pin with
escapement springs, domes & frame.
Fig. 4. is a detail of the escapement with the clappers attached to it.
Fig. 5 is an end view of the escapement with pin.
Fig. 6 shews a modification of the frame with similar mechanical attachments in
which case the domes are attached to the frame in a manner similar to that shewn
in Fig. 2.
Refering to Fig. 1. a represents the outer dome, 6 the lever by which the bell is
sounded and which when moved actuates the mechanism of the bell, e represents
the central pin or pivot on which the lever b is fixed by means of the screw d,
d1 represents the nut by which the domes are fastened to the frame of the bell,
e shews part of frame is the screwpin or pivot fixed in the frame, indicates the
nut which actuates the clip f, i represents part of a cycle or any other support to
fasten the bell or any other article by means of the clip.
F.2. is a section of the bell shewing clip f. and frame e.
outer domes a 2, a 3 the inner or smaller domes, e, e, e, represent the frame,
a a 1. represent. the
f. indicates the clip, f1. a projection on the end part of clip which is made to rest
in a groove f2. in the frame to facilitate and ensure a better hold, g. indicates the
screwpin or pivot fixed in the frame e as shewn h represents the nut by which the
clip is actuated and by which means the frame of a bell, alarm, or other article
may be securely fastened to a cycle or other support. c indicates the central pin
or pivot which support the pinion or toothed wheels j, n n indicate the spiral springs
by which the lever b and the general mechanism of the bell are returned to their
starting point, m m representing the escapements with o, o 1, 02, 03 the clappers
for the inner and outer domes. r, r, represent the springs which actuate the escape-
ments and clappers. is the pin on which the spring is held.
Fig. 3. shews a section of a four domed bell taken the reverse way to the
section shown in Fig. 2, e represents the frame a & a³ the domes, ; indicates the
pinion or toothed wheel fastened by the screw h, to the central pin or pivot c, this
toothed wheel j, works the escapement m, m² m² with the clappers o³ & o³,
n represents the spiral spring which returns the mechanism of the bell to its starting
point, are the springs which actuate the clappers to sound the domes.
Fig. 4 shews a plan of the escapement m m¹ m² with the clappers o* & o* attached,
and the pin or pivot p.
The escapement is composed of three seperate parts which work on the pin or
pivot p. m, and m², are the outer parts formed to receive the clappers of o³, and
are so constructed that thy will work or come into contact (indicated by x) with the
flanges or turned up parts of the central piece m¹ when set in motion by the pinion j.,
this central piece m' having a pointed end or tongue is engaged by the pinion or -
toothed wheel j, as shewn in Fig. 2, 3 & 6, and in consequence of having two of its
sides bend at right angles and in opposide direction it will work one clapper by its
forward movement and one clapper by its reciprocating movement, the clappers
being brought back into position by means of the springs r, r.
Fig. 5, is a end view of the escapement showing the two outer pieces in & m²,
the central piece m' with the sides turned at right angles and in opposide direction,
and kept in position by the pin or pivot p.
5
Fig. 6 shews a modification of the frame having similar mechanical attachments
to those shown in Fig. 2. with the exception that the springs r, r, which actuate 5
the clappers are placed in a vertical position instead of a horizontal position as

page_text: shewn in Fig. 2. and the ends of each spring r, engage a pair of clappers on each
side of the bell. In this figure similar letters of reference refer to similar parts.
I do not confine myself to the exact shape of the frame or to the precise position
of the springs, escapements, clappers lever, or any other part, as the above described
mechanism may be readily adopted to be used in a different form and therefore I
illustrate another construction of a similar bell in Fig. 7, 8, 9, 10, & 11.
Refering to the illustration of the Fig. 7, 8, 9, 10, & 11, the similar letters
refer to the similar parts.
In this different construction of bell I employ only one wheel or pinion j. having
two or more teeth, on either side and secured to the frame e, by means of a screw
or central pin c, this wheel or pinion has a slot ³, to receive the end of lever b,
which lever works on a pin or pivot in a curved or other shaped arm or bracket e¹
fastened to the frame e.. By moving this lever the wheel or pinion j, with its
teeth, will opperate the escapement m, and cause the clappers o' & o³ to strike
the domes, the escapement with the clappers attached being actuated by the
spring r, the lever b and pinion or toothed wheel j, being brought bak into
position by the spring n.
Fig. 7. and 8. show front and side view of the frame with the mechanical parts
attached.
Fig. 9. is a section through the wheel or pinion and frame shewing the escape-
ment and spring.
Fig. 10, is a part end view of the escapements and spring.
Fig. 11. is a section shewing the teeth on the wheel or pinion.
The following explanation in conjunction with the fore going description will
serve to explaine the operation in any various form the frame and mechanism of my
invention may take.
Hand or other precsure being brought on the lever will rotate the pinion or
toothed wheel or wheels (as the case may be) which in their turn will operate
the reciprocating escapement and thereby work the clappers and so sound the
different domes; by the retracting of the spiral springs the lever and pinion or
toothed wheels are brought bak to the starting point and the clappers strike the
domes again during the retrogating action or movement.
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 bell for a cycle or other purpose having 2, 3, or more domes to produce a
chime of different sounds according to the number of domes applied and operated
from one lever in connection with the toothed wheels and reciprocating escapement
such as hereinbefore described and illustrated in the accompanying drawings.
2. In a bell as described the combination of the mechanism of a reciprocating
escapement or movement such as substantially described and set forth.
3. The construction of a bellframe for carrieng the several domes in combination
with a clip for fastening a frame to a cycle or other support, such as described and
substantially set forth.
4. A clip for fastening a bell or other article to a cycle or other support such as
described and substantially set forth.
Dated this 17th day of August 1893.
GUSTAVE WILHELM MÖHRSTÄDT.