Improvements in or relating to Electric Time Alarms or Call-boards and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Electric Time Alarms or Call-boards
and the like.
I, ALBERT EDWARD DREW, of 80, Saint George's Road, Bolton, in the County
of Lancaster, Post-Office Clerk, do hereby declare the nature of my said invention
to be as follows:-
This invention relates to improvements in or relating to electric alarms or call-
boards and the like, such as described and set forth in my Specification No. 2581
of 1897, and consists in mounting on a switch-board or other suitable or convenient
place switches which correspond with the rooms or places in which it is desired
to operate alarms. The said switches are provided with contact points which are
electrically connected with and correspond to contact points on or in a clock;
the said contact-points in the clock being arranged to operate in connection with
the hand or hands or other suitable or convenient part of the clock. The contact
points on the said switches may consist of mounts, indents, plug-holes, or other
equivalents, and contact may be effected by means of arms, levers, plugs, or other
equivalents. The alarm in each bed-room is connected to the arm or plug of its
respective switch. Any number of alarms may be operated at the same time,
the corresponding contact-points on each switch being connected to each other.
The contact-points between each switch and the clock may be of any desired
number. A portion, or all, of the contact points on or in the clock may he con-
nected to contact points on a separate "switch-board'
or plug-board." Contact
on the said separate "switch-board" or 'plug-board" is effected by means of
plugs or switches or their equivalents which are connected to their corresponding
contact points on the switches of the respective rooms.
Dated the 20th dow of Avant 1808
6
"
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EDMUND CHADWICK,
Agent.
Improvements in or relating to Electric Time Alarms or Call-boards
and the like.
I, ALBERT EDWARD DREW, of 80, Saint George's Road, Bolton, in the County
of Lancaster, Post-Office Clerk, do hereby declare the nature of my said 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 refers to improvements in or relating to electric time alarms or call-
boards and the like such as described and set forth in my Specification No. 2581
.ת
017

page_text: of 1897, and consists in mounting on a switch-board or other suitable or convenient
place switches which correspond with the rooms or places in which it is desired
to operate alarms. The said switches are provided with contact points which are
electrically connected with and correspond to contact points on or in a clock;
the said contact-points in the clock being arranged to operate in connection with
the hand or hands or other suitable or convenient part of the clock. The contact-
points on the said switches may consist of mounts, indents, plug-holes, or other
equivalents, and contact may be effected by means of arms, levers, plugs, or other
equivalents. The alarm in each bed room is connected to the arm or plug of its
respective switch. Any number of alarms may be operated at the same time,
the corresponding contact points on each switch being connected to each other.
The contact points between each switch and the clock may be of any desired
number. A portion, or all, of the contact points on or in the clock may be con-
nected to contact-points on a separate "switch-board" or "plug-board." Contact
on the separate "switch-board" or plug-board is effected by means of
plugs or switches or their equivalents which are connected to their corresponding
contact points on the switches of the respective rooms.
46
وو
DESCRIPTION OF DRAWINGS.
Fig. 1 is a front elevation of a clock and "switch-board" with electric con-
nections and bells arranged for six rooms-Fig. 2 a back elevation of switch-
board"Fig. 3 an enlarged front elevation of one of the switches mounted on
switch-board "Fig. 4 a sectional end elevation of "switch-board "in Fig. 3-
Fig. 5 an enlarged front elevation of one of the plugs mounted on switch-board,"
and Fig. 6 a sectional end elevation of one plug on "switch-board" in Fig. 5.
In all the figures the same letters and numerals are employed to indicate corre-
sponding parts.
66
A is the clock; 13 time or call and "switch-board;" C electric bells; D boxes
containing coils for actuating the electric bells; E battery; F plugs; G contact
points connected by wires to electrically connect with and correspond to contact
points H from 6 to 9 o'clock on clock face A.
"
"
In order that my invention may be clearly understood I will now proceed to
describe the same beginning with the time or call and switch-board B. The
front side of the time or call and "switch-board" B-which is composed of ebonite
or other suitable material or substance-is provided with the sockets I secured to
the latter by the nuts J, with which are connected the contact points H on the
clock face A from 9-15 to 5-45 by the wires K. The sockets I may be arranged
on the time or call and switch-board" B as shown in Fig. 1-or otherwise as
desired wherein they range from 9-15 increasing by 15 minutes each round
the clock face to 5-45. Although I have thus defined the divisions of time I
would have it clearly understood that I do not confine myself to this as the same
may be varied or modified and extended or decreased as desired. The switches
may be enlarged so as to contain every division or other part of the clock face.
The number of switches connected to the bed-rooms may be increased or decreased
as desired. On the time or call and "switch-board" B are mounted in circular
order the contact points G ranging from 6 o'clock to 9 o'clock with an interval
of 15 minutes between each with the addition of contact points numbered 1, 2,
and 3, which are connected to the plugs F also numbered 1, 2 and 3 on the bottom
end of the time or call and "switch-board" B. In the centre of the circle on
which the contact points G are mounted is disposed on the time or call and
switch-board" B the centre (a) provided with the finger Z and the operating
wheel or disc Y, which are secured in position to be rotated in either direction
by the nut X. The contact points G with the exception of number 1, 2 and 3 on
the time or call and "switch-board" B are connected by wires to the contact
points H ranging from 6 to 9 o'clock on the clock face A as shown in Fig. 1.
Batteries E are coupled to the coil boxes D. by the wires (b) and the clock to the
batteries E by the wire (c). The back or inner end of each socket I mounted on
66

page_text: the time or call and
switch board" B is connected to the contact points H 9-15
to 5 45 on the clock face A by the wires K represented by the times on the time
or call and "switch-board" B. The plugs are composed of the split end L to
ensure of the same maintaining their position when placed in the sockets I. The
plug F is provided with the ebonite or other outside projection or handle secured
by the screwed stem P attached to the plug F.
The switch-board" B is manipulated as follows:-
Suppose it is desired to operate the alarm C in room No. 1 at 7 o'clock the
operating wheel or disc Y is turned or rotated so as to place the finger Z over the
contact point G timed 7 o'clock. On the hour finger or its equivalent arriving
at 7 o'clock on the dial of the clock A contact is made by means of contact point H
and the circuit is complete. If is desired to ring the alarms in any or all of
the other rooms at 7 o'clock it will be effected by placing the operating wheel or
disc Y connected with such rooms to the contact point G timed 7 o'clock. Any
of the times from 6 to 9 o'clock are obtained in the aforesaid manner. Again,
suppose instead it is desired to operate the alarm C in room 1 at 5 o'clock the
operating wheel or disc Y with the finger Z will be turned so as to make contact
with the contact point G numbered 1 (or if No. 1 is engaged or occupied then
No. 2 or No. 3 as the case may be) which is connected to plug F numbered 1.
Plug F is then inserted in socket which is timed 5 o'clock and the circuit is thus
completed on the arrival of the hour hand at this time. Any of the times
from 9-15 to 5-45 are obtained in the aforesaid manner. The corresponding
contact points G on all the switches are connected together as shown in Fig. 2,
consequently when it is desired to duplicate the number of rooms to be rung at
one and the same time it is only necessary to set all the operating wheels or discs Y
to the same number on each. Although only 6 o'clock and 6-15 are shown
connected to avoid confusion, the whole of the respective points are connected
throughout the switches. For the purpose of disconnecting the circuit a switch
may be placed in each bed-room.
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 arrangement, construction, and combination of parts_composing
my improvements in or relating to electric time alarms or call-boards and the
like for automatically operating the bells or alarms C in one or more rooms at
one and the same time or at varying times, consisting of the switch-board B,
plugs F, and switches Y, the latter being connected to the various rooms; the
contact points on the clock face A connected to the sockets I and contact
points G, the whole being connected, arranged, applied, and operating substan-
tially as described and as illustrated in the annexed drawings.
Dated the 16th day of May 1899
EDMUND CHADWICK,
Agent.