Improved Handles for Electrical Switches.
Year: 1890

page_text: Date of Application, 24th May, 1890
Complete Specification Left, 20th Feb., 1891-Accepted, 28th Mar., 1891
PROVISIONAL SPECIFICATION.
Improved Handles for Electrical Switches.
GUSTAV BINSWANGER, Electrical Engineer, of 71, Queen Victoria Street,
London, and GUSTAV FRANKE, Engineer, of 45, Chapel Street, Salford, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to an improved construction of handles for electrical switches
whereby a simple, cheap, & efficient method of attaching same to the switches is
obtained and at the same time allowing the circuit to be quickly opened or closed.
For this purpose the handle which may be of any of the well known forms and of
any suitable material is formed with an axial cylindrical hole in it which may
extend either partially or quite through.
At right angles to this recess or hole, another hole is formed which may extend
partially or wholly across, and of such a shape that it allows the handle to turn
through the required angle to operate the switch when the hereinafter mentioned
pin is inserted. The sides of this hole may be parallel or when preferred it is
obvious that the hole may be wider at outside of the handle, and narrower at the
centre. To the part of the switch, to which this handle is to be applied a stud is
attached of such a size and shape as to fit easily the axial recess or hole in the
handle, the said stud having a hole across it whose centre coincides with the centre
of the cross hole of handle. The handle being on the stud a pin or cross bar is
passed into its cross hole and into the hole in the stud being secured to the latter.
Whilst the handle is free to turn partially on its axis the amount of turning being
limited by the width of the hole, the handle is prevented from coming away from
the switch stud. When desired a ferrule or a short tube may be fixed to the handle
covering the hole in which the cross bar works, to strengthen the handle and to
improve its appearance.
Dad his outh day of Mon 1800
G. BINSWANGER.
GUSTAV FRANKE.
COMPLETE SPECIFICATION.
Improved Handles for Electrical Switches.
GUSTAV BINSWANGER, of 71, Queen Victoria Street, London, E.C., Electrical
Engineer, and GUSTAV FRANKE, of 45, Chapel Street, Salford, 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:-
Our invention relates to an improved construction of handles for electrical
switches whereby a simple, cheap and efficient method of attaching same to the
switches is obtained and at the same time allowing the current to be quickly opened
and closed.
For this purpose the handle which may be of any of the well known forms and
of any suitable material is formed (as shown in Fig. 1, in elevation, in Fig. 2, in
plan) with an axial cylindrical hole in it which may extend either partially or
quite through as seen at a.
At right angles to the recess or hole, another hole b is formed which may extend
partially or wholly across and of such a shape that it allows the handle to turn
through the required angle to operate the switch when the hereinafter mentioned
pin is inserted.

page_text: The sides of this hole may be parallel as clearly seen in Fig. 2 at ; or when
preferred it is obvious that the hole may be wide at the outside of the handle and
narrower at the centre as indicated by Fig. 3 at b.
t
is
To the part of the switch to which this handle is to be applied, a stud
attached of such a size and shape as to fit easily the axial hole or recess a in the
handle, the said stud having a hole across it whose centre coincides with the centre
of the cross-hole b: Figures 1 and 2.
The handle being placed on the stud, a pin or cross-bar c is passed into the
cross-hole band into the hole on the stud e, being secured to the latter.
Figure 4 shows a modification (in elevation) in which the handle can readily be
detached and
Fig. is plan of the same; the hole in which the pin c works being only
partially through, in fact forms simply a recess.
A slot d cut from the lower part of the handle into the recess allows the pin c
on the stud e to pass either in or out of the handle when the handle is placed upon
or taken off the stud e.
Figure 6 shows the form of handle adapted for the larger sizes of switches:
Fig. 7 being plan of part of same.
The details of the working parts are the same in Figs. 1, 2, 3, but in order to
give a neat appearance to the lower part of the handle a cap or ferrule of metal or
other suitable material is fitted tightly over it as shown at ; if a cap is used it has
a hole made in its centre to allow the stud e to pass casily through.
Having described our improved handle for electrical switches what we
claim is :-
:—
The combination in a handle for actuating electrical switches, of an axial hole or
recess, and a cross-hole or slot, and a pin working in the said hole or slot attached
to a stud in connection with the switch it is designed to operate substantially as
described, and with reference to the herein mentioned drawings.
Dated this Twentieth day of February 1891.
G. BINSWANGER.
GUSTAV FRANKE.