IMPROVEMENTS IN ELECTRIC LAMP HOLDERS AND SWITCHES THEREFOR OR FOR OTHER PURPOSES
Year: 1882

page_text: LETTERS PATENT to Joseph Samuel Beeman, of Earls Court Road in the
County of Middlesex for an invention of IMPROVEMENTS IN ELECTRIC
LAMP HOLDERS AND SWITCHES THEREFOR OR FOR OTHER PURPOSES
PROVISIONAL SPECIFICATION left by, the said Joseph Samuel Beeman at
the Office of the Commissioners of Patents on the 14th July 1882.
JOSEPH SAMUEL BEEMAN, of Earls Court Road in the County of Middlesex,
"IMPROVEMENTS IN ELECTRIC LAMP HOLDERS AND SWITCHES THEREFOR OR FOR
OTHER PURPOSES."
The improvements consist in making the holders telescopic and making contact
by means of a spring, or springs, wheels, or contact pieces fitted in or on the
inner tube or casing holding conducting wires, such springs or pieces being allowed
to impinge or touch the inside of the outer case which may be made to slide if
desired and is put in electrical contact with the electric current-thus making a
sliding electrolier and one that can be turned about its axis-the inner casing of
the outer tube being in the reverse electrical state to a centre rod passing into the
inner tube or case which carries the contact springs or equivalents, or these may be
placed on the outer tube-and when I use a ball and socket joint I can make
electric connection therein or thereby in combination with the above improve-
ments As regards switches the invention consists in a double break contact so
shaped that the switch must be worked in one direction and be either full in
action or fully off-in one case by making the movable parts in the shape of a
double cam and in another the movable parts furnished with springs to work into
or on double shoulders or hollows.
Also in making switches for cutting a portion of a circuit with contact springs
acting direct on contact movable surface.

page_text: SPECIFIĊATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Samuel Beeman in the Great Seal Patent Office on the
18th January 1883.
JOSEPH SAMUEL BEEMAN, of Earls Court Road, in the County of Middlesex,
IMPROVEMENTS IN ELECTRIC LAMP HOLDERS AND SWITCHES THEREFOR OR FOR
OTHER PURPOSES
The improvements embrace making the holders telescopic and making contact
by means of a spring, or springs, wheels, or contact pieces fitted in or on the inner
tube or casing holding conducting wires, such springs or pieces being allowed to
impinge on the inside of the outer case, (which may be made to slide if desired)
and is put in electrical contact with the current thus making a sliding electrolier
and one that can be turned about its axis; the inner casing of the outer tube
being in the reverse electrical state to a centre rod passing into the inner tube or
case which carries the contact springs or equivalents, or these may be placed on
the outer tube and when I use a ball and socket joint I can make electric
connection therein or thereby in combination with the above improvements. As
regards switches the invention embraces a double break contact so shaped that the
switch must be worked in one direction only and be either fully in action or fully
off, in one case by making the movable parts in the shape of a double cam, and in
another the movable parts furnished with springs to work into or on double
shoulders or hollows. Also the invention embraces making switches for cutting
out a portion of a circuit, with contact springs acting direct on contact movable
surfaces.
The annexed drawings will serve to illustrate convenient modes of performing.
the invention, like letters representing like parts.
In the drawings Figure 1 is a longitudinal section of electrolier a being the
external casing with a metallic interior, 6 centre metal rod or equivalent, these
being for conducting the current to and from the lamp through the conductors e
and f; c and d are contact springs impinging on a and b; e and f are conductors
connected with c and 'd, the remaining portion of the electrolier being of any non-
conducting material. Figure 2 shows a modification in which 6 is a metal tube,
o and d being annular springs-Fig. 5 is a cross section at these springs.
Fig 6 shows a modification in which the metal tubes a, b are separated by a
non-conducting material also a ball and socket joint-g is a conductor communi-
cating with h forming the socket of the ball-i metal ring forming part of ball and
connected with conductor a by k-another part of the non-conducting ball is a
metallic stud connected with conductor b, said stud being electrically connected
with the other conductor m by a movable stud n kept in contact with stud Z
by a spiral or other spring o-Figs 7 and 8 are modifications of Fig 1 with
sliding spring contact pieces, shaped as brushes, cup and ball or rollers. Fig 9
is cross section and plan of Fig 8. Instead of the springs and their conductors
being movable, they may be stationary and the centre rod or equivalent and the
outer case and metal lining be made movable-Sometimes I use a knuckle joint
in any of the forms shown in Figs 10, 11, 12, 13 and 14 the principle
employed being a sprung or extended annular ring-Figs 15, 16 and 17 show
various methods of connecting two portions of a pipe or casing so that any
arranged part of one may impinge or make contact on any arranged part of the
other by means of the studs p and q fitting into the hollows r and 8 formed to
receive them and held in position by means of the screw collar t. With reference

page_text: to switches to be used with the above electroliers or separately Figs 3, 4, 18, 19,
20, 21, 22, 23, 24 are various forms in sectional plan and sectional elevation.
Fig 18 showing the double breaks v v¹ xx¹, the springs y y being movable--
by means of the key rotation of the springs and their support is secured in one
direction, and contact is made once in every half revolution. Figs 19 and 20
show the same principle but the springs y and y¹ are fixed and the double breaks
x²-a
are movable by the key. Fig 21 shows four fixed contact springs instead
of two designed to cut a certain number only of lamps out of circuit. Fig 22
shows another form of movable cam for effecting the same purpose in combination
with the fixed springs in Fig. 21. Figure 25 is a movable four spring switch
which can be operated right or left. Figure 24 shows the same arrangement but
the springs are placed under, or they may be above, the movable centre portion
and these two last figures, if fitted with a ratchet and pawl, will prevent the
centre piece from being moved in any direction but one. Figs 3 and 4 show
plan and section of a double contact switch apparatus for cutting a certain
circuit out of the main circuit and which cannot be replaced without special
attention.
CLAIMS.
1. A telescopic electrolier substantially as illustrated and described:
2. An electrolier made telescopic combined with a ball and socket or a knuckle
joint substantially as illustrated and described.
3. An electrolier made telescopic and rotary substantially as illustrated and
described.
4. The ball and socket and knuckle joints for electroliers substantially as
illustrated and described.
5. The double break contact switch acting in one direction-four spring switches
acting in one direction together with the irreplaceable switch as shown in
Figs 3 and 4 substantially as illustrated and described.
In witness whereof I the said Joseph Samuel Beeman have hereunto set
my hand and seal this 10th day of January A.D. 1883.
JS BEEMAN (10)