Year: 1887

page_text: Date of Application, 1st June, 1887.
Complete Left, 27th July, 1887.
Complete Accepted, 23rd Sept., 1887.
ARTHUR BERNARD GILL 6 Wisteria Road Lewisham S.E. Electrical Engineer, do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to construct a switch for making & breaking an
electric circuit, which shall have a powerful pressure imparted to the points of
contact.
.
The pressure imparted to the contact pieces may be applied in various ways, but I
prefer the following.
The switch may be so constructed that the lever (which in some cases carries the
current) when turned, enters a frame which carries the spring & contact piece, or
pieces, or other arrangement, which when properly shaped, it raises against the
pressure of a spring or springs, thus the lever or contact piece is firmly gripped &
good contact ensured.
-
The switch may also be arranged so that the circuit need not be broken when
moving the contact lever from one contact piece to the next as for instance when
controlling a circuit of accumulators or other Electrical apparatus.
And also that the spark produced on breaking contact may be discharged without
burning the contact surfaces.

page_text: ARTHUR BERNARD GILL 6 Wisteria Road Lewisham S.E. 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:
The object of my invention is to construct a switch for making and breaking an
electric circuit which shall have a powerful pressure imparted to the points of
contact.
The pressure imparted to the contact pieces may be applied in various ways but I
prefer the following as shown in the accompanying drawings in which Fig. 1 is a
plan. Fig. sectional elevation and Fig. 3 section of contact piece.
The switch is constructed so that the lever a (which in some cases carries the
current) when turned enters a frame b which carries the spring c and contact piece or
pieces d or other arrangement, which when properly shaped, it raises as shown in
Fig. 2 against the pressure of the spring or springs c and thus the lever a or contact
piece d is firmly gripped and good contact ensured.
The switch may also be arranged as shown in Fig. 4 which shows plan Fig. 5
sectional elevation Fig. 6 section of contact piece so that the circuit need not be
broken when moving the contact lever a from one contact piece to the next. For
instance this arrangement is applicable when charging or discharging a circuit of
accumulators or other electrical apparatus, the contact lever a passes before it leaves
one contact piece d d' over a button e and the circuit is maintained by coil of wire f
of suitable resistance till it is moved onto the next contact piece. Also that the spark
produced on breaking contact may be discharged without burning the contact
surfaces. One way of effecting this is by attaching to the contact lever a small
spring which leaves the portion d' of the contact piece last when operated.
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
"An improved electric switch" substantially as hereinbefore set forth and described
and as illustrated by the accompanying drawings.