Improvements in Switches for Controlling Electric Circuits, especially Electric-light Circuits.
Year: 1890

page_text: Date of Application, 1st Mar., 1890
Complete Specification Left, 29th Nov., 1890-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Switches for Controlling Electric Circuits,
especially Electric-light Circuits.
GEORGE EDWIN FLETCHER, Chester House, Chatham Street, Edgeley,
Stockport, Electrical Engineer, do hereby declare the nature of this invention to
be as follows:-
Improvements in switches for controlling electric circuits especially electric light
circuits, by means of which the circuit or circuits may be made or broken at will by
means of a cord or its equivalent, the switch being out of reach, the pulling of the
cord or its equivalent either making or breaking the circuit by rotating the switch
which is caused to rotate by means of suitable clutch and clutching gear, but not
ratchet gear.
11
GEO. EDWIN FLETCHER.
COMPLETE SPECIFICATION.
Improvements in Switches for Controlling Electric Circuits,
especially Electric-light Circuits.
I, GEORGE EDWIN FLETCHER, of 93, Chatham Street, Edgeley, Stockport,
in the County of Chester, Electrical Engineer, 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 :-
Fig. 1. represents a plan: Fig. 2 a sectional elevation: Fig. 3 a plan with
rotating portion removed, so as to shew the contact pieces and contact spring:
and Fig. 4 a back view of the rotating portion together with the actuating levers.
In the figures, a. is the insulating portions or pieces on the base, 1: b, the contact
pieces in connection with the terminal block, d: and c, the contact pieces in con-
nection with the terminal block, ef is a terminal block from which the fuse passes
to block, dg, is the rotating contact spring which passes alternately from off two
opposite contact pieces, b and c on to two opposite insulating pieces, a: and vice
versa: h is a rotating drum and spring carrying contact spring, g: also lever i:
and lever by means of the screw k: on which lever j: rocks; ¹, is the bush in
which, h, rotates the clutch spring, s, which passes round the drum, h is attached
to levers i, and j: at the points and z. n, is a pillar carrying spring s', which
holds lever i: in its normal position, o is a stop for lever i: in the upward position;
and p in the downward position; lever j: is held in its normal position by the
clutch spring s.
:
It will now be seen that when the lever j: is pulled, the clutch spring, s, grips
the drum, and so long as the lever is continued to be pulled, and until it reaches
the stop p, the drum, h, will rotate-and with it the contact spring, g; inasmuch
as the lever : and the drum, h, rotate round the same centre. Upon the lever j:
being released, it returns to its normal position, shewn in Fig. 1. through the action
of spring s. The drum, /, remains in that position in which it was placed when
lever i was arrested by stop p: owing to the friction between the contact spring, g,
and the insulating pieces a: or the contact pieces, b and c.
It will now be obvious that by the pulling of a cord, or other suitable material,
attached to the lever j: an electrical circuit can be completed, or broken, at will.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare, that what I
claim is
1. A switch for controlling electrical circuits, substantially as herein set forth.
2. The rotating of a switch controlling electrical circuits, by means of a band, or
suitable clutch, or friction gear.
Dated this 27th day of November 1890.
GEO. EDWIN FLETCHER.