IMPROVEMENTS IN BELLS KNOWN AS REPEATING BELLS, AND USED FOR DENOTING WARNING CALL OR ALARM
Year: 1884

page_text: I BENJAMIN ROCK JACKSON, of Spencer Street, Birmingham, in the County
of Warwick, Brass and Bell-Founder, do hereby declare the nature of my said
Invention for "IMPROVEMENTS IN BELLS KNOWN AS REPEATING BELLS, AND USED
FOR DENOTING WARNING CALL OR ALARM" and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My invention consists of improvements upon a Provisional Patent granted to me
No 5321 and dated March 22nd 1884 and refers chiefly to that class of bells known
as call or table bells, but also applicable to Bicycle Tricycle and other similar
purposes, and consists in the construction or arrangement of mechanism so that by
one operation a series of blows are given upon the interior of the bell or gong in
repetition the sounds produced thereby being multitudinous.
I will describe my invention thus, which consists essentially (as a call or table
bell) of a base or foot of the usual kind, from the centre of which is a tubular
pillar (for supporting the bell or gong) provided with an aperture projecting from
which is a pin (to be herein afterwards described) in conection with a rod known
as a push down rod, working upon a helical spring and both secreted in the above
named tubular pillar; upon the said pillar is arranged a toothed or cogged segment
of a wheel working freely in either direction, this said wheel has a slot into which
the pin above named engages this segment of a wheel is geared to a pinion of the
ordinary kind supported by a bracket which is affixed to the upper portion of the
tubular pillar and in which it works, from one end of this is a crank which
engages in the stem of the hammer which is looped especially, and suspended at or
about the same elevation as the bracket before named and working upon a pin or
pivot.
The before going being the nature of my Invention I will proceed to describe in
detail how the same may be carried out in practical effect and for that purpose I
have hereunto attached a sheet of drawings illustrative thereof marked with figures
and letters of reference corresponding with those in the following explanation, the
same letters of reference being used to denote like or corresponding parts throughout
the various views of the drawings.
Fig. 1 is a view in elevation part sectional as one side.
Fig. 2 a view in elevation as front,

page_text: A is the bell or gong B the tubular pillar for supporting the same being screwed
at B¹ for connecting to the base or foot as a call or table bell, the bell or gong being
held in position by the screw nut C,-D is the push down rod with stud or
knob E, for actuating the same with greater facility F, is the helical spring, G is
the projecting pin H is the toothed or cogged segment of a wheel with the slot I,
and in which is the pin G,-J is the bracket carrying the pinion K, and into which
is geared the toothed or cogged segment H-L is the crank connected to the said
pinion and engaging in the loop M, of the stem N, which carries the hammer O,
The means of imparting motion to the mechanism is thus-
When pressure is applied to E-D compresses the helical spring F, and allows G,
the pin to traverse the. slot I giving movement to the toothed segment H, and
pinion K, the crank L, in the loop M, throwing out the hammer O, in great rapidity
against the interior of the bell or gong A, both in the outward and return movement
the latter being effected by the power of the helical spring F.
In some cases I may employ two hammers as illustrated in figure 3 one being in
juxtaposition to the other.
In the application of this invention to Bicycles, Tricycles, and other like purposes
where it is intended to denote warning or alarm, I dispense with the foot as before
described and employ a base plate in lieu thereof with lugs specially provided as
hitherto constructed.
I do not confine myself strictly to the arrangement set forth as various modifi-
cations may be made without differing from the principle of my Invention.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is:-
The construction and arrangement of the toothed or cogged segment of a wheel
H with slot I, and pin G, for actuating the same, the pinion K, with crank L, in
connection with the loop M, of the stem which carries the hammer or hammers O
working substantially as and for the purposes above described or set forth.
Dated 21st October 1884.