Improvement in Bell Pulls
Year: 1888

page_text: Date of Application, 16th Aug., 1888
Complete Specification Left, 11th Apr., 1889
Complete Specification Accepted, 18th May, 1839
PROVISIONAL SPECIFICATION.
Improvement in Bell Pulls,
I, DENIS O'HALLORAN of No. 11 Townshend Road, Saint Johns Wood in the
County of Middlesex, Police Constable do hereby declare the nature of this invention
to be as follows :--
In consequence of numerous larcenies of bell knobs, brass plates etc. from gate
piers in surburban and other districts, I have invented a bell pull which has for its
object the prevention of bell knobs or handle being unscrewed or wrenched off the
spindle or shank, and name-plates connected therewith being detached from gate piers
or pillars by mischievous or dishonest persons. According to my Invention the bell
pull shank or spindle is a round steel rod, to one end of which is attached by brazing
or otherwise the knob or handle, and is fitted to slide through a corresponding hole in
the boss or guide usually inserted in the wood blocks in gate piers or pillars, and
being free to revolve when fitted up, renders it impossible to be unscrewed or wrenched
off as is the case with the present square shank.
I have also designed a boss or guide to fit existing plates or cups for the benefit of
those who may wish to attach my Invention to the handles and plates at present in
use without purchasing new material. In order to carry out the above action the
spindle passes through the pillar from the front and is inserted into a wooden box or
case firmly secured at the rear of the pillar in the space now occupied by the bell
crank the inner side of the box or case having an oblong slot lined with brass to
protect the wood through which the spindle passes into a spiral spring, protected
against the slot by a washer, herein called a buffer which noves vertically over
the slot as the handle is pulled out or drops back.
"
"
The spindle is then inserted into a brass tube with screw thread, called a "drum "
the end being pierced to receive a tweezer shaped pin with washer inside to prevent
friction, the other half being connected with the crank by a lever spring hook, either
Japped or rivetted on when both parts of "drum" are tightly screwed up and cannot
be unfastened without special appliances. My Invention has also the advantage of

page_text: preventing the violent ringing of bells by tradespeople and others so distressing to
delicate or nervous persons, the length of the pull being limited at will to the confine-
ment of the spiral spring between the "drum" and "buffer" which spring never
fails to bring the knob or handle tightly back into its place in the cup or socket,
thereby dispensing with check springs generally used to keep wire tight, but so
destructive in stretching it and often rendering it useless. This cannot happen to the
wire attached to my improvement for it remains at perfect rest, having no strain after
the handle is dropped.

page_text: COMPLETE SPECIFICATION.
Improvement in Bell Pulls.
1, DENIS O'HALLORAN, "Police Constable," of 56 Londoun Road St. Johns Wood,
late of 11 Townsend Road, St. Johns Wood, in the County of London, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement :-
In consequence of numerous larcenies of bell knobs, brass plates etc., from gate
piers in surburban and other districts, I have invented a bell pull which has for its
object the prevention of bell pull knobs or handles being unscrewed or wrenched off
the spindle, rod or shank, and name plates connected therewith, being detached from
gate piers or pillars by mischievous or dishonest persons.
According to my invention the hell pull shank rod or spindle, is constructed of
round steel rod, to one end of which is attached by brazing or otherwise the knob or
handle, and is fitted to slide through a corresponding hole in the boss or guide usually
inserted in the wood blocks in gate piers or pillars, and being free to revolve when
fitted up renders it impossible to be unscrewed or wrenched off, as is the case with the
present square shank.
I have also designed a boss or guide to fit existing plates or sunk pulls, for the
benefit of those who may wish to attach my Invention to the knobs or handles and
sunk or flush plates at present in use without purchasing new material.
And in order that my Invention may be thoroughly understood, I now proceed to
describe the accompanying drawings thereof, reference being had to letters and figures
marked thereon.
Figure 1 represents a longitudinal section of the apparatus fixed in a portion of an
ordinary gate pier. In order to carry out the above action the spindle E passes
through the pillar A from the front or sunk full plate Cand is inserted into a wooden
box or metal case D firmly secured at the rear of the pillar in the space now occupied
by the bell crank, the inner side of the box or case D having an oblong slot through
which the spindle E passes into a spiral spring K protected against the slot by a
washer F herein called a "buffer" which moves vertically over the slot as the handle
is pulled out or drops back.
"drum with a male
The spindle E is then inserted into a cap J or herein called a
thread, the end being pierced to receive a stop pin or set pin Q with washer P inside
to prevent friction, the other portion I being connected with the crank N by a rivet O,
the "drum" being screwed up tightly into the female thread of the cap 1, and cannot
be unfastened without special appliances.
The pull B being brazed to the spindle.
The crank N is connected to the plate G by the arms L, and wire R to connect the
bell or gong in the usual manner, this said plate G is secured to a wood backing H
to support the box D).
Figure 2 is an enlarged section describing the mode of connection.

page_text: My Invention has also the advantage of preventing if desirable the violent ringing
of bells by tradespeople and others so distress ng to delicate or nervous person's; the
length of the pull being limited at will to the confinement of the spiral spring K
between the "drum" J and "buffer" F which spring never fails to bring the knob B
or handle tightly back into its place in the sunk plate or socket, thereby dispensing
with check springs generally used to keep wire tight, but so destructive in stretching
it and often rendering it useless.
This cannot happen to the wire attached to my Invention for it remains at perfect
rest having no strain after the handle is dropped.
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 :
First The combination of the bell pull brazed to the rod and connected to the
crank by the drum J, with spring K, and buffer F fitted in a box D, substantially as
herein described and according to the accompanying drawings.
Secondly: The combination of the bell pull with the rod E free to revolve when
fitted to the apparatus J and I, rendering it impossible to he unscrewed or wrenched
off substantially as herein described and according to the accompanying drawings.
Dated this 11th day of April 1880
DENIS O'HALLORAN,
Applicant.