An Electric Bell Indicator.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
An Electric Bell Indicator.
HENRY SANDERS 272 Summer Lane Birmingham Watch Maker and Machinist
do hereby declare the nature of this invention to be as follows:-
An instrument to indicate by which contact or place, an electric bell has been
rang from, there are six or any quantity of levers springs or contacts, which
contact with the rack or quadrant, fixed to rack is also a plate which has no
metallic connection with the rack, but is carried with the rack, the contacts are
set at divided distances, & by the moving of the rack the contacts are slided
one by one, from rack on to a plate takeing the current from the rack to plate,
which has a connection with bell, the rack has a connection with the coils, which
is made like a bell movement, but much different, haveing no means of breakeing
its own current, when the push in any place or room connected to springs or
contacts is pressed, the current runs through the contacts, to rack to coils, the
current runing through the coils draws the click of coils away from rack
allowing the rack to move takeing the numbers or the hand with it, when the
rack has liberated the contact which the current has run through the click of
coils holds the rack in that position, thus indicating the place or room from
which the bell has been rang from, the rack has as many numbers or names as
contacts, thus when a contact has moved from rack to plate the current is taken
from coils, allowing the click of coils to jump into rack & hold it, when just
left the contact thus leaving the numbers or names opposite hole in dial, & that
contact on plate ringing bell, by means of an arm attached to rack which has
also claim to
a cord to it, the rack can be pulled into its former position.
make the instrument to work with a straight rack, to work horizontal or
perpendicular thus when the rack has been drawn along till the contact has
left the rack the numbers are left opposite hole in dial, giving the same result
as before, the straight rack can be drawn along by the hand, & by this means
away with the coils.
do
1
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1001
An Electric Bell Indicator.
HENRY SANDERS 272 Summer Lane Birmingham Watch Maker and Machinist
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:-
An electric bell indicator which will indicate six or any quantity of numbers
or names by means of one movement, or two movements. The movement which
consists of a metallic quadrant or rack which has as many teeth as it is made
to indicate. When the machine is made to indicate a large quantity of numbers
or names the teeth are continued round the rack according to the number
required. When a small quantity is used as shown in the drawings the rack

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or quadrant is heavier one side than the other and when liberated will turn
partly round, of its own weight, and when a large quantity of numbers or
names are used, is made circular and is caused to move round by means of a
weight or spring. A tube is fixed in the rack, and through the tube a screw is
put and screwed into the back board of the machine, the rack turns on this
screw. There are two coils or electro magnets which has a click or armature
that works into the rack, there are six contacts shown in the drawings that
contact with the rack or quadrant, or can be made to contact with the tube of
the rack. The contacts are connected to the different rooms by means of wires,
and one contact to contact with the tube of the rack, and connected with the coils
or electro magnets. Another contact contacts with a plate or curb, which is
connected to the rack, or can be fixed to the back board of the machine, but
fixed to the rack is best. This plate or curb has no metallic connection with
the rack, but is fixed by means of paper, cotton, or anything non metallic, and
holding the two together without any metallic connection. The contact that
contacts with this curb has a connection with the bell.
Haveing now explained the nature of the said invention I will now give reference
to the drawings, the same letters are used for the same part in each drawing there
are nine letters, and six numbers used for reference. The drawings show the
movement on the back board of the indicator, and show the rack in a position when
the bell has been rang from contact ((B) No 3).
Fig. 1. gives a front view of the machine.
Fig. 2. shows the rack reversed showing how the contacts contact with the
rack (A) and the plate (C) and the tube (H).
Fig. 3. showes the movement with a straight rack and without the electro
magnets, and not haveing the magnets dont require any teeth in the rack.
There are six springs or contacts (B) which contact with the rack (A). Fixed
to the rack (A) is a metallic plate or curb (C) which has no metallic connection
with the rack (A) but is carried with the rack. The rack (A) has as many
teeth as contacts (B). The coils (D) has a click or armature (G) that works
into the teeth of the rack (A). The contacts (B) are set at devided distances
corresponding with the teeth of the rack (A). The contact (E) connected to
the coils (D) contacts with the tube (H) the contact (F) contacts with the
plate (C) forming circuit through bell. When the push in any of the places
or rooms connected to indicator is pressed, the current runs through the
contact (B) to the rack (A) then to the contact (E) to the coils (D) draws
the click (G) out of the rack allowing the rack (A) to move round untill the
contact (B) has slided from rack (A) to plate (C) takeing the current from the
coils (D) and allowing the click (G) to jump into the tooth of the rack corre-
sponding with the number of the contact (B) and the contact (B) which the
current has run through contacting with the plate (C) and the current runing
through contact (F) to the bell. The tube (H) which is in the centre of the
rack carries a band that points to the numbers or names on the dial, showing
from which room the bell has been rang from. Attached to the rack (A) is a
cord or chain (I) which runs round the tube of the same, and carries a knob
that hangs outside the indicator so that the rack (A) can be pulled into its
former position, and then all the contacts (B) are contacting with the rack (A).
The rack (A) stands out from the back board three eights of an inch, so as to
allow the contacts (B) to work freely underneath. The indicator that is worked
with a straight rack and without coils or electro magnets, is drawn along by the
hand, and has as many numbers as contacts (B) and one contact (F) to contact
with the bell, the contacts (B) are set at devided distances along the rack (A)
and when the bell is rang the rack (A) is drawn along untill the contact (B)
which the current has run through has left the rack the current is then broken,
and the number on the rack (A) is left opposite the hand on the board, showing
⚫the number of the last contact that left the rack.

page_text: Haveing now particulary described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
. 1. The different ways the rack can be made, and the different ways it is made to
perform as aforsaid.
2. The setting of the contacts (B) at devided distances, so that by the action of
the rack the contacts are liberated one by one.
3. The action of the rack to be accomplished by means of a weight or spring as
aforsaid in part recital.
Date this 3rd day of November 1894
HENRY SANDERS.