Year: 1896

page_text: Date of Application, 12th May, 1896
Complete Specification Left. 22nd June, 1896-Accepted, 12th May, 1897
JOHN PEARSON Drysalter 18 Nelson Square Blackfriars S.E. WILLIAM
GOODING Electrical Instrument Maker 37 Nelson Square Blackfriars S.E. do
hereby declare the nature of this invention to be as follows:-
First. Comprises an ordinary electric trembling bell worked with two dry
batteries which is fitted under vehicle in a box.
Second. Is a contact consisting of two springs insulated, lever and pillar, fixed
on axle of vehicle.
Third. A piece of iron inch by inch two inches long screwed on the box of
wheel to strike the above lever when the vehicle is moved.
Fourth. Switch comprising brass plug and two pieces of brass inch by inch
with hole for the above plug in centre.
ד
1906
JOHN PEARSON.
WILLIAM GOODING..
Electrical
We JOHN PEARSON Drysalter of 18 Nelson Square Blackfriars Road S.E.
and WILLIAM GOODING Electrical Instrument Maker of 37 Nelson Square,
Blackfriars S.E. 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 an electrical thief alarm for vehicles, and our invention
consists in the improved apparatus hereinafter described and illustrated by means
of which apparatus an electric bell of ordinary construction and arranged at any
suitable part of a vehicle will be automatically sounded if the said vehicle be set
in motion in the absence of the driver or other authorized persons, and the bell
will continue to ring even though the vehicle be stopped, until the electric
contact is broken by the driver or other authorized person having knowledge of
the apparatus.
In order that our invention may be readily understood reference is made to the
accompanying sheet of drawings wherein like letters of reference indicate corre-
sponding parts throughout the several figures and in which :-
Fig. 1. shows our improved apparatus in plan view, the parts being for convenience
shown arranged closely together and fixed to a board.
Fig. 2. shows our improved locking apparatus in side elevation and partly in
section.
Figs. 3 and 4 show in plan view and side elevation respectively a lever D which

page_text: is adapted to be operated when the vehicle is set in motion so as in turn to allow
contact between two spring contact pieces.
Fig. 5 shows the two spring contact pieces separated and-
Fig. 6 shows the hub of the vehicle provided with a stud adapted to operate the
lever D.
In carrying out our invention we employ preferably two dry batteries A and an
electric bell B all of any usual construction. These are situated at any suitable
part of a vehicle and are adapted-by the means hereinafter described-to be
actuated or put in electrical communication or contact so that the bell B will be
rung if the vehicle be moved to a sufficient extent. For this purpose we provide
two coils C shown in side elevation in Fig. 2 and in plan in Fig. 1, which coils are
connected in the usual manner with the batteries A. At opposite sides of said
coils C we provide two metal angle pieces a a' one of which-a-carries a lever b
which lever is also connected at about its centre to the armature e and which lever
is covered at its free end with insulating material d the whole being normally kept
in the raised position as shown by means of a spring e. The angle piece a-which
is at its top end shown in section-is formed with a slot f in which the free end of
the lever is capable of vertical movement and one side of said angle piece is
provided with a spring-actuated catch g and the other side with a contact-piece /
the arrangement of the parts being such that if an electric current be passed
through the coils C the armature c will be-by the magnetism set up-drawn down
a sufficient distance so that the free end of the lever b comes in contact with the
contact piece h and also so that the catch g will engage with the end of the
lever and thereby keep the parts in electrical contact until separated as herein-
after described.
For the purpose of automatically actuating the lever & in the manner described
we provide a lever D situated say on one of the stationary axles of the vehicle one
end of said lever projecting a suitable distance over the box or hub F of one of its
wheels, said hub being provided with a suitable pin or the like G which raises or
lifts said end of the lever D if the wheel he sufficiently revolved as will be under-
stood by reference to Fig. 6. The opposite end of said lever D is covered with
insulating material said end being wedge shaped as shown in plan view in Fig. 3
the arrangement being such that normally said insulated end keeps two opposite
spring contact-pieces H apart but if the lever be oscillated the wedge or tapering
end of said lever will be brought to about the position shown in dotted lines
Fig. 4 and thereby permit the top ends of the spring contact-pieces to come
together into contact. Said lever D is preferably provided with a spring S
which will return it to its normal position after having been oscillated as
described.
The arrangement and action of the apparatus thus far described is as follows:
When the vehicle is drawn along and the hub F revolved to a sufficient extent
the two spring contact-pieces H are brought into contact as described and their
connection with the battery A and the coils is such that excepting for a
"break" hereinafter described a current would now pass through the said coils C
and draw down the armature c on the lever b which lever makes contact as
described and connection would he made with the coils of the bell which latter is
at once set ringing.
As it is however only necessary to "set" the apparatus during the temporary
absence of the driver or other person having charge of the vehicle we provide a
"break" K between the coils C and the spring contact pieces H said break
consisting of two plates kk, insulated from each other and having a preferably
tapering seating adapted to receive a plug N as shown in side elevation in Fig. 2.
Said plug is normally kept in a convenient place but out of contact with said
plates kk so that normally when the vehicle is being drawn along, the bell B will
not be set ringing as there is now no connection between the contact pieces H and
the said coils C, but when the driver is about to leave the vehicle unattended he
inserts the plug N into the seating between the plates k k' and thereby electrically

page_text: connects the said two plates so that the moment the spring contact-pieces H
are allowed to come into contact as described the bell will be sounded and will
continue to ring until the plug N is withdrawn and the catch g pulled back.
We connect the different parts constituting our invention by means of wires
in any ordinary manner and do not confine ourselves to any particular arrange-.
ment of said parts and all said parts may be covered or contained in suitable
boxes.
Having now particularly described and ascertained the nature of our said.
invention we declare that what we claim is :
1. An electrically actuated alarm for vehicles constructed and operating
substantially as and for the purposes described and illustrated.
2. In an electrically actuated alarm for vehicles a lever D having one end
covered with insulating material and adapted to be oscillated when the vehicle is
set in motion so as to permit contact between two spring contact pieces H for the
purpose and substantially as described and illustrated.
Dated 12th day of November 1896
JOHN PEARSON,
WILLIAM GOODING,
By their Agents, Horn, Son & Co.,
151 Strand (next to Somerset House), London.