Year: 1899

page_text: Date of Application, 3rd Feb., 1899
Complete Specification Left, 3rd Nov., 1899-Accepted, 30th Dec.. 1899
We, HENRY CHARLES GOVER and JAN MEINES HUISMAN, both of Mansfield,
13, Leigham Vale, Streatham, in the County of Surrey, Gentlemen, do hereby
declare the nature of this invention to be as follows:-
-
Our invention consists in providing a new construction of switch by which
the several parts are more completely isolated than in those at present in use and
which is adapted to the high voltage currents which are now coming into
general use.
The invention will be best described by reference to the accompanying draw-
ings. Figs. 1 and 2 represent in elevation the base which is usually made of
slate or porcelain in one piece, but is under our invention divided into two
parts so that the terminals are perfectly insulated from the wall on which the
switch is to be secured. Fig. 3 shows in elevation the upper and lower portions
of the base in position relatively to each other and Fig. 3" is a similar view,
but taken at right angles to Fig. 3 and shewing the holes for the terminal
pieces within the base. Figs. 4 and 4" are respectively elevation and plan of
the terminal pieces used in our invention. Fig. 5 is a plan of Fig. 3, with the
terminals in position, and Figs. 6 to 10 inclusive are views of details of the
invention. Fig. 11 is a vertical section of the switch with attachments
complete.
Fig. 1 represents the lower portion of base, in which two holes A, B, are
formed for the screws by which it and the other portion Y of the base shewn
at Fig. 2 and which has corresponding holes, are screwed to the wall. A centre
hole is provided through which the screw from the head piece is passed and
is fastened by a nut at C, the base piece, Fig. 2, being made to fit into Fig. 1.
When the two portions of the base are to be put together the meeting faces
may be coated with putty or cement to keep the two pieces firmly together
so as to be free from rocking. The base pieces should be made of marble,
slate, porcelain or any insulating material. The piece, Fig. 2, has formed on
it a cylindrical wall E, around which the connecting rod hereinafter described,
and its attachments, revolve, and through which the screw passes for fastening
the several portions of the switch together. The piece Y has also two conical
holes F, F, shewn at Fig. 3, into which are placed two brass terminals G, G',
perfectly insulated from the wall, which terminals are shewn separately at
Figs. 4 and 4", made of tubular metal slightly splayed to fit the conical holes
by which they are held in position, the splay not being quite circular but
flattened at the contact part, as shewn at Fig. 4, and through which terminals
the wires V pass and are held by set-screws H in the usual manner and as
shewn at Fig. 5, the set-screw being at right angles to the diametric line
passing through the terminals. The two pieces X, Y, Figs. 1 and 2, are of such
relative proportions that when put together, the piece Y projects a little above
the other piece X, into which it is fitted, as shewn at Figs. 3 and 4, so as to
form an edge over which the dome is fitted to enclose the switch.
Fig. is an elevation, and Fig. 6 a plan of the brass conducting piece I
provided with spring ends for the purpose of making good contacts with the
terminals G. G¹.

page_text: I is a circular hole therein, which fits over the cylindrical wall E on which
12 and show the metal of the conducting piece, bent up at right
angles, to which the springs are attached.
it turns.
Fig. is an elevation and Fig. 8 a plan of a cylindrical reel T moving
freely round the cylindrical wall E above the conducting piece and with slots
fitting on said conducting piece so that the cylindrical reel and the conducting
piece or rod always move together.
On the top of the cylindrical reel is fixed a metal piece J, shewn in plan
at Fig. 9, so shaped that the tumbler lever S, Figs. 10 and 10", which latter
view is a horizontal section of the actuating arm of the tumbler lever, moves
it in such a manner as to cause the cylindrical reel to move a quarter circle
round, bringing the conducting rod from the position of a closed to an open
circuit and vice versa.
The tumbler lever S is so shaped as to engage the lever piece first at its
outer edge at K and as the tumbler part K is moved forward it revolves the
piece and when at its full distance locks the conducting bar. When the
tumbler is moved backwards it unlocks the conducting rod I and moves it away
from the terminals, which rod by means of a circular spring U laid round the
cylindrical wall E under the conducting bar I is brought round to an
"off"
position, resting against stop pieces not shown in the drawings on the inner
base plate.
The tumbler lever piece S is formed so that the part I is fixed at a distance
from the centre so as to effect a proper movement with the lever piece J. The
tumbler piece is supported by a central piece M, shewn at Fig. 11, on to which
the switch dome R screws, and is made of a piece of stamped or cast metal
similar to an umbrella ferrule only preferably with parallel sides like a car-
tridge case. At the bottom of this piece is a square hole through which passes
a square bolt which, passing through the cylindrical wall of the upper base
piece and through the corresponding hole in the bottom base piece is fastened
by a nut at C thereby holding all the pieces of the switch together.
In the stamped ferrule, Fig. 11, is a hole N through which the tumbler
lever is passed, the tumbler ball being pivoted at O on the screw piece on to
which the switch dome is screwed.
In fitting the switch together, first the terminal brass pieces are fitted into
the holes F, F, in Fig. 2-the top base picce, Fig. 2, is then put into the
bottom basc piece, Fig. 1, so that the screw holes correspond, the two parts
being cemented together. The circular spring U to move the conducting rod
back to an "off" position, is next fitted one end fixed by a bent piece into
a receiving hole U, Figs. 2, 5 and 11. and the other end of the spring bent up
into a receiving hole I in the metal conducting rod I then the cylindrical
reel is put on so as to engage the conducting rod I. After that the lever
piece is attached to the cylindrical reel. Next the piece M with the tumbler
piece in place, and the binding bolt are brought to position over the bolt,
passed through the holes in Figs. 1 and 2, and screwed at the bottom. The
switch is then complete and ready for the dome. The piece M rests upon
the top of the cylindrical wall as shown on Fig. 2, and allows the cylindrical
reel to move freely beneath it, the piece M, Fig. 11, slightly projecting over
the cylindrical reel so as to keep it in its place.
11.
1 1
P
11 1
1000
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agent for the Applicants.

page_text: We, HENRY CHARLES GOVER and JAN MEINES HUISMAN, both of Mansfield,
13, Leigham Vale, Streatham, in the County of Surrey, Gentlemen, 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 consists in providing a new construction of switch by which
the several parts are more completely isolated than in those at present in use and
which is adapted to the high voltage currents which are now coming into
general use.
The invention is illustrated by the accompanying drawings, Figs. 1 and 2
represent in elevation the base which is usually made of slate or porcelain in
one piece but is under our invention divided into two parts so that the terminals
are perfectly insulated from the wall on which the switch is to be secured.
Fig. 3 shows in elevation the upper and lower portions of the base in position
relatively to each other and Fig. 3" is a similar view but taken at right angles
to Fig. 4, and showing the holes for the terminal pieces within the base.
Figs. 4 and 4" are respectively elevation and plan of the terminal pieces used
in our invention. Fig. 5 is a plan of Fig. 3, with one of the terminals in
position, and Figs. 6 to 10 inclusive are views of details of the invention.
Fig. 11 is a vertical section of the switch with attachments complete. Figure 12
is a section showing a modified form of the base.
Fig. 1 represents the lower portion X of the base, in which two holes A, B,
are formed for the screws by which it can be secured to a wall or other support
and the other portion Y of the base shown at Fig. 2 has corresponding
holes A, B, to permit of a screw driver being inserted for the purpose of
securing the switch to or removing it from a wall after the switch dome has
been removed. A centre hole C is provided on each of the parts X, Y, through
which the screw C₁ from the head piece is passed and is fastened by a nut
at C, Fig. 11, the base piece, Fig. 2, being made to fit into Fig. 1. When
the two portions of the base are to be put together the meeting faces may
be coated with putty or cement to keep the two pieces firmly together, or an
intervening piece of rubber, paper or fabric may be inserted to prevent rocking.
The base pieces should be made of marble, slate, porcelain, or any insulating
material. The piece Y, Fig. 2, has formed on it a cylindrical wall E, around
which the connecting rod hereinafter described, and its attachments, revolve,
and through which the screw passes for fastening the several portions of the
switch together. The piece Y and the piece X are provided with holes F, F,
respectively, of conical or other shape into the former of which, as shown
at Fig. 3, are placed two brass terminals C3, perfectly insulated from the wall,
which terminals are as shown separately at Figs. 4 and 4 made square in
cross section as shown at Fig. 4 to fit the holes F¹ in the piece Y, or these
terminals may be of tubular metal slightly splaved to fit conical holes in the
piece Y, the splay not being quite circular but slightly flattened at the contact
part. Through these terminals the wires pass and are held by set-screws H
in the usual manner and as shown at Fig. 5, the set-screw being at right angles
to the diametric line passing through the terminals. The two pieces X. Y,
Figs. 1 and 2, are of such relative proportions that when put together, the
piece projects a little above the other piece Y, when fitted together, as
shown at Figs. 3 and 3ª, the dome when screwed on, bearing upon the pro-
jecting edge and enclosing all the other parts of the switch.

page_text: Fig. 5 is an elevation, and Fig. 6" a plan of the brass conducting piece I
provided with spring ends I¹ for the purpose of making good contact with the
terminals C. This conducting piece I is bent in semi-circular shape as shown
at Fig. 6 in order that it may be inserted in a similarly shaped recess J¹ in
a circular contact carrier J shown at Figs. 7, 8 and 9 made of insulating
material which carrier surrounds the cylindrical wall E and rests upon the
piece Y as shown at Fig. 11. Or the conducting piece may consist of arms
provided with spring ends for the purpose of making contact with the terminals,
the arms having centrally a circular hole therein, which fits over the cylin-
drical wall E on which it turns. Parts of these arms are bent up at right angles
to which the springs are attached, and these bent up parts enter slots in a
cylindrical reel also adapted to surround the wall E so that the cylindrical
reel and the conducting piece always move together.
Around the cylindrical wall a coiled spring 12 is placed one end of said
spring entering a recess J2 on the under side of the insulating carrier J, shown
at Figs. 7, 8 and 9 which piece is further provided with a notch J3 with which
a crank or arm S¹ on the usual tumbler lever S, Fig. 10, engages to turn the
The
carrier and by means of the contact piece make or break contact.
other end of the spring enters a hole in the underside of the tumbler carrying
bracket or ferrule M on which the dome R is screwed, the spring 12 when the
contact springs have been relieved from the terminals, causing the cylindrical
oscillating carrier to turn a quarter circle round, bringing the conducting spring
piece from the position of a closed to a completely open circuit and vice versa.
The tumbler lever S is so shaped as to engage the oscillating contact carrier
first at its outer edge at K and as the cranked part S¹ of the tumbler S is moved
forward it revolves the carrier J and when at its full distance locks the con-
ducting bar.
In the bracket or ferrule M, Fig. 11, is a hole M through which the tumbler
lever S is passed, the tumbler ball being pivoted at 0 on the screw piece on
to which the switch dome R is screwed, an enamelled iron liner being first
placed within the dome R.
In putting together the several parts of the switch, the terminals Care
first placed in the holes F of the piece Y. The oscillating contact carrier J
into which the contact spring piece I has been previously inserted has the
coiled spring I therefor placed within its central orifice, the lower end of
the spring being inserted in the hole J2 and the contact carrier and its appur-
tenances placed around the cylindrical wall E of the piece Y. The tumbler
carrying bracket or ferrule M which has the square bolt C secured to it is then
brought so that the bolt C¹ passes through the square holes C2 in the piece Y
and base X and so that the crank arm S₁ of the tumbler S engages the notch J³
of the oscillating contact carrier J, the nut C being thereafter screwed on to
the bolt C, which retains the several parts of the switch in relation to each
other, the nut bearing on the bottom of the base, as shown at Figure 11, or in
a recess X2 as shown at Figure 12, in order that by filling up the recess X'
with an insulating compound, the bolt may be entirely covered, and so pre-
vented from all posible contact with moisture. The base X can now be attached
to the wall or support to which it is desired to secure it by passing screw
nails through the holes A¹, B', in the piece Y until the heads of the nails
engage the countersunk portions of the holes A, B, in the base X. The wires
are then brought in through the holes F in the base X and into the terminals C³
where they are clamped by means of the screws H. The dome is then screwed
over the tumbler carrying bracket or ferrule M.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is;-
-
1. An electric switch suitable for currents of high voltage, the several parts

page_text: of which are constructed, combined and arranged to operate, substantially as
described.
2. An electric switch suitable for currents of high voltage consisting of a
base made in two parts (X, Y) in order that the terminals (C3) may be thereby
retained without the use of fixing screws, combined with an oscillating contact
carrier (J) centred on a cylindrical wall (E) and adapted to be turned through
a portion of a circle, in order to make or break contact, by the action upon it
of the cranked arm (ST) of a tumbler (S), and to be retracted by means of a coiled
spring (12) engaging the contact carrier and the tumbler carrying bracket or
ferrule (M) and operating, when the contact springs (I) have been released
from the terminals (C3) to turn said springs some distance from the terminals (C³).
and a central screw or bolt (C) attached to the tumbler carrying bracket (X)
serving to retain, in relation to each other, the several parts of the switch.
3. In an electric switch such as described, a base made in two parts (X, Y).
the part (Y) having holes for the reception of the terminals, and the part (X)
recessed for the reception of the part (Y), these parts when put together serving
to retain the terminals in position without the use of fixing screws.
Dated this 2nd day of November 1899
.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agent for the Applicants.