CERTAIN IMPROVEMENTS IN BELLS KNOWN AS CALL OR ALARM BELLS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I BENJAMIN ROCK JACKSON of Sponcer Street Birmingham in the County of
Warwick, Brass and bell founder do hereby declare the nature of my Invention for
CERTAIN IMPROVEMENTS IN BELLS KNOWN AS CALL OR ALARM BELLS, to bo as
follows:-
My Invention refers chiefly to that class of bells known as call or table bells but
also applicable to Bicycle Tricycle and other similar purposes.
I will describe my Invention as applied to the ordinary call or table bell-The
baso or foot is the same as hitherto but from the centre is a tubular pillar for
supporting the gong or bell, provided with an aperture for partially receiving a
pinion wheel supported by a bracket; the axis upon which the said pinion moves'
is provided at the one end with a circular rigid plate (moving only with the pinion)
and upon the surface a projecting pin near its edge; above this is suspended the
hammer the stem of which is constructed as a loop and the projecting pin engages
therein, to the interior of the tubular pillar is arranged a push down rod projecting
out from the bell or gong the highest part having the usual stud for pressure the
lowest part is constructed as a rack and geared into the pinion; upon each pressure
of the said rod the plate makes one revolution and the pin travelling the loop of
the stem of the hammer register three blows upon the bell or gong both in going
and returning the latter being effected by means of an helical spring fixed in the
tube underneath the push down rod, the number of blows can be incredsed or
diminished by the regulation of the rack.
For Bicycles and Tricycles the base or foot is dispensed with being secured to
the vehicle in a well known manner.

page_text: •
I BENJAMIN ROCK JACKSON, Brass and Bell founder, of Spencer Street,
Birmingham in the County of Warwick, do hereby declare the naturo of my
Invention for "CERTAIN IMPROVEMENTS IN BELLS, KNOWN AS CALL OR ALARM
BELLS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention refers chiefly to that class of bells known as call or table bells but
also applicable to Bicycle Tricycle and other similar purposes.
I will describe my invention as applied to the ordinary call or table bell-Tho
base or foot is the same as hitherto but from the centre is a tubular pillar for
supporting the gong or bell, provided with an aporture for partially receiving a
pinion wheel supported by a bracket; the axis upon which the said pinion moves
is provided at the one end with a circular rigid plate (moving only with the pinion)
and upon the surface a projecting pin near its edge; above this is suspended the
hammer the stem of which is constructed as a loop and the projecting pin engages
therein, to the interior of the tubular pillar is arranged a push down rod projecting
out from the bell or gong the highest part having the usual stud for pressure, the
lowest part is constructed as a rack and geared into the pinion; upon each pressure
of the said rod the plate makes one revolution and the pin travelling the loop of
the stem of the hammer registers three blows upon the bell or gong both in going
and returning the latter being effected by means of an helical spring fixed in the
tubo underneath the push down rod; the number of blows can be increased or
diminished by the regulation of the rack,
In Bicycles and Tricycles the base or foot is dispensed with being secured to the
vehicle in a well known manner.
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 illustrativo thereof marked with
figures and letters of reference corresponding with those in the following
explanation, the sauno letters of reforonce being used to denote like or corresponding
parts throughout the various views of the drawings.
Fig 1 is a side view in section.
Fig 2 a front view in section.
Fig 3 a view in its entirety.
"A" is the bell or gong, "B" the tubular pillar its lowest part being connectod
to a base or foot of the ordinary kind (except when applied to bicycles, tricycles
and similar purposes then the base or foot is dispensed with and a cross bar
provided with lugs and scrows for connecting to any convenient part of the
machine) the highest part supporting the bell or gong
r A," is screwed down to its
position by the screw nut "C"-"D," is the aperture, "E," the pinion wheel
working therein, "F," is the bracket or support for same, "G," is the circular
plate, "H," a projecting pin, "I," is the haminer suspended and working freely
upon the pin "J" K," is the stem which is looped and the pin "H" engages in
the said loop for the purpose herein after described, "L," is the push down rod,
"M," is the stud or knob for pressing and actuating the same, "N," is the rack
into which is geared the pinion "E," O," is the helical spring.
"
When pressure is applied to "M,” « 'O," yields, and the rack "N" actuates the
pinion "E" causing the plate "G" to revolve and the pin H to traverse the

page_text: loop "K" and registering blows upon the bell or gong, the number being
controlled according to the construction of the rack "N" and pinion "E."
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 general construction, combination and arrangement of parts together forming
my improvements in Call or Alarm Bells substantially as and for the purposes
above described and shewn on the drawings.