Year: 1888

page_text: I, CHARLES MARTIN O'LEARY of 80 K Street North West in the City of
Washington and District of Columbia, in the United States of America Printer
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
5 statement:-
This invention has relation to Bells to be operated by the ordinary revolutions of an
axle or shaft and its object to enable alarms to be automatically struck at regular
intervals of time or distance. Being especially well adapted to alarm bells for bicycles
or tricycles, I have described and represented the invention as applied to the lamp
commonly carried upon such machines, but the bell mechanism can be fitted to any
suitable frame-work or casing suspended upon the axle or shaft that is to serve as a
motor.
In the accompanying drawings, wherein like letters represent like parts throughout
the series, Fig. 1 is a side elevation of a bicycle lamp, showing such parts of the
mechanism used by me as are necessarily placed outside the lamp casing. Fig. 2 is a
front elevation of the same object showing a different view of such exterior parts of
the bell mechanism. Fig. 3 is a plan view of the box formed in the top of the
lamp for the reception of the axle of the bicycle, the upper part of said box being
provided with hinge and catch (as shown in Fig. 1) so as to work like a lid and
being thrown open in this plan view to show the groove formed on the interior
of the hinged part, for the reception of the flange Q when the box is closed
around the axle. Fig. 4 is a side elevation of the bell mechanism within the
lamp-case, part of the large toothed wheel being broken away to show parts behind
it. Fig. 5 is a top plan of said mechanism within the case taken on the line W W
in Fig. 2; and Figs. 6 and 7 are interior side elevations of said mechanism taken
on the line of Fig. 5, Fig. 6 being the view indicated by the lower arrow in
said Fig. 5, and the upper arrow indicating the view No. 7.
A is the axle of a bicycle (or it may be taken to represent any revolving shaft)
and upon it is a cog B, which gears with a toothed wheel C, turning upon a
shaft D, projecting from an arm of a bracket E. Pivoted to this bracket arm is a
lever G which at one end carries a strike H, and this strike by means of a spiral
spring I (connected at its upper end to a vertical standard formed upon the bracket,
D

page_text: and at the lower end to the lever G) is brought into concussion with the concave side
of the bell M.
Upon the inner face of the wheel C are pins c c, which engage (when the wheel
is revolved) with the deerfoot K, pivoted to the lever G. These pins vary in
length and instead of two there may be as many as the wheel can carry, leaving
space enough between any two of the pins to clear the deerfoot. By means of
a thumb-nut N the wheel C is pressed inward along its shaft D and against a flat
spring F till as many of the pins c c as are desired are brought into position to
engage the deerfoot. If it be desired to sound the bell at the longest practicable
interval only the wheel C is so adjusted by means of the thumb-nut that only the
longest pin on the wheel engages the deerfoot, and if the bell is to sound as often as
possible the toothed wheel is carried inward on its shaft till the shortest pin engages
the deerfoot as the wheel revolves. Recesses n n are cut in the wrist of the thumb-nut
to receive a catch O pivoted to the exterior part of the lamp-casing, these recesses
equalling in number the pins in the wheel C and one additional to enable the catch to
hold the thumb-nut fast when the pins are wholly out of contact with the deerfoot,
and the bell therefore silent.
When a bicyclist dismounts and wheels his bicycle backward to a place of rest the
deerfoot being pivoted and having a bevelled face yields to the pressure of the pins on
the toothed wheel, and the bell is not struck. A small wire spring L restores the
deerfoot to position after each yielding to a backward moving pin. A slot p is
cut in the frame or case P to enable the bell mechanism to be seated in or removed
from the frame or case, also to enable the mechanism to be pressed down to engage
the toothed wheel with or disengage it from the cog on the axle. Whenever the
mechanism is so pressed down a spring S restores and keeps it in its place. A flange Q
is formed or placed upon the axle to prevent side motion of the lamp upon the axle,
and when the box is closed around the axle this flange is accomodated and held in the
groove R of the upper and hinged part of said box.
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 :-
1. The combination of an axle or revolving shaft having a cog B, and flange Q
with a toothed wheel C having pins cc, the shaft D, the bracket E, the bell strike H,
the spring I, the deerfoot K, the spring L, the bell M, the thumb-nut N, having
recesses nn, the catch O, and the groove R, arranged in the manner shown and
described for the purpose of adjustably and automatically sounding the bell by the
revolution of said axle or shaft.
2. The combination of an axle or revolving shaft having a cog B, and flange Q,
with a toothed wheel C having pins cc, the shaft D, the bracket E, the lever G, the
bell strike H, the spring I, the deerfoot K, the spring L, the bell M, another groove R,
arranged in the manner shown and described for the purpose of automatically sounding.
the bell by the revolution of said axle or shaft.
Dated this 5th love of Man 1000