Electric Time-Switch. Page: 4 of 7
[4], 3 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATESPATENT OFFICE.
JAMES M. CHAPPEL, OF DALLAS, TEXAS.
ELECTRIC TIME-SWITCH.No.825,111.
To all who1m it imc y concern:
Be it known that I, JAMES M. CHAPPEL, a
citizen of the United States, residing at Dal-
las, in the county of Dallas and State of
5 Texas, have invented certain new and useful
Improvements in Electric Time-Switches, of
which the following is a specification.
This invention relates to electric time-
switches.
10 The object of the invention is to provide
novel means whereby an electric switch may
automatically be operated to complete and
to break an electric circuit whereby the times
of such operations may accurately be prede-
15 termined.
Further, the object of the invention is to
provide.a device for automatically operating
an electric switch to complete and to break
an electric circuit of such construction that
20 the movable parts of the switch shall be op-
erated positively and shall be securely locked
in the positions to which they are moved,
thereby preventing accidental displacement
of the.parts.
25 The invention consists in the construction
and arrangement of the parts substantially as
hereinafter described and claimed.
In the accompanying drawings one form of
embodiment of my idea is shown.
30 In the drawings, Figure 1 is a side elevation
of the invention, showing by full lines the po-
sitions of the parts when set ready for the
automatic closing and subsequent opening of
the switch and by dotted lines the positions
35 of the parts after the switch is closed. Fig.
2 is a view of the side opposite to that shown
in Fig. 1, the parts being shown in the posi-
tions assumed after the switch is opened.
Fig. 3 is a side elevation of a part of the
40 frame and the mechanism of a clock having
attached thereto means for locking and re-
leasing the switch-operating devices. Fig. 4
is a face view of the parts shown in Fig. 3.
Fig. 5 is a detail view of a portion of the lock-
45 ing and releasing mechanism by which the
spring for opening the switch is governed.
Fig. 6 is a detail view of a part of the means
for securing and releasing the spring by
which the switch is closed. Fig. 7 is a detail
50 view of the means for attaching the spring
by which the switch is opened to the bail for
limiting the movement of this spring. Fig.
8 is a perspective view of the device, showing
the positions assumed by the parts after the
55 switch has been opened; and Fig. 9 is a de-Patented July 3, 1906.
tail view particularly showing the positions
of the parts when the switch is closed.
In illustrating my invention, I have shown
it applied to a simple form of switch consist-
ing of two pivoted arms insulated from each 6o
other and corresponding spring-fingers re-
ceiving the respective arms to complete a
circuit, the arms to be removed from the fin-
gers to break the circuit.
In the drawings, 1 represents the bed-plate 65
of the switch, on which are pivoted the con-
ducting-arms 2 2. Also attached to the bed-
plate are the socket-fingers 3 3, the arms and
socket-fingers being adapted for connection
in the usual way with the wires of a lighting 70
system or the like. The pivoted arms 2 2
are connected by a bar 4 of insulating mate-
rial, and to this bar is attached a post 5, hav-
ing joined to it by a pivotal connection the
mechanism by which the switch is opened 75
and closed. In order to limit the downward
movement of the arms 2 2 in closing the
switch, I provide the bar 4 with a projection
6, of wood fiber or other suitable material.
The projection is of a length to come into con- 8o
tact with the bed-plate when the arms have
assumed positions to make perfect contact
with the sockets, preventing further move-
ment which might tend to injure the parts.
The means for opening and closing the 85
switch is connected to the post 5 by a link 7,
one end of which is pivoted to the post. The
link is slotted for nearly its entire length, and
the slot receives a pin extending through an
eye near the end of a leaf-spring 8. The link 90
is formed with an opening 9 for the reception
of a pin for connecting it to the spring 8 when
the device is to be used only for automatic-
ally breaking a circuit. The spring 8 is se-
cured at one end to the casing 10 of a clock 95
by the mechanism of which the movements
of the switch-operating mechanism are timed
and governed.
Mounted on a frame 11 is a standard 12,
which standard is located adjacent to the Too
switch. The standardhas in it a slot 13, the
pivoted bail 14 attached to the spring 8. The
bail is free to move up and down in the slot
13, and the upward movement of the bail,
and consequently that of the spring 8, is lim- 105
ited by the play allowed the bail in the slot.
The bail is attached to the spring 8 near the
end thereof by adjusting-screws 15, passing
through a plate 16, having an opening for the
reception of the spring. The length of move- i11oSpecification of Letters Patent.
Application filed July 24, 1905. Serial No. 271,015.
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Chappel, James. M. Electric Time-Switch., patent, July 3, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512155/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.