A New or Improved Holder for the Globes or Shades of Electrical, Gas, and other Lamps.
Year: 1892

page_text: Date of Application, 4th May, 1892
Complete Specification Left, 10th Jan., 1893-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
A New or Improved Holder for the Globes or Shades of Electrical,
Gas, and other Lamps.
I RICHARD GEORGE EVERED Director of Evered and Company Limited of
Barnet Works Birmingham in the County of Warwick Manufacturers do hereby
declare the nature of this invention to be as follows:-.
My invention has reference to lamp globe or shade holders in which three or
other number of radial arms capable of moving outwards and inwards that is from
and to the centre, are employed to effect the holding and liberation of the globe or
shade; and consists of mechanism of the kind hereinafter described for effecting
the motions of the said arms.
ta.
A circular disc having a central opening has three or other number of radial
slots made in it. In each of these slots an arm slides, the outer ends of the said
arms being so shaped that when the said arms are at their greatest distance from
the centre of the disc they engage under a neck or contraction in the globe or shade
and hold it in position. When the said arnis are withdrawn, that is, are moved
towards the centre of the disc, the globe or shade is liberated.
The motions of the arms are effected in the following manner. A ring con-
centric with and working around the central opening in the disc has a series of
links jointed to it equal in number to the arms of the holder. The outer ends of
these links are jointed to the slides carrying the arms hereinbefore referred to and
when the ring is turned in one direction the slides are by means of the said links
drawn inwards, that is, towards the centre and when the ring is turned in the
opposite direction the slides are by means of the said links forced outwards.
The latter position of the arms, which is their normal position is maintained,
when they are not pressed inwards by the hand, by a coiled or other spring. A
radial arm fixed to the said ring projects through a slot in the case of the holder
and terminates in a knob or thumb plate by which the said ring can be moved in
the direction proper to withdraw the arms.
When it is wished to attach the globe or shade the knob or thumb plate is
pressed from its normal position and the sliding arms are withdrawn. The globe
or shade is put in position and the pressure being removed from the said thumb
plate the arms are made by the action of the spring to move outwards and
engaging in the neck of the globe or shade fix the globe or shade in position.
Dated this 4th day of May 1892.
W. T. WHITEMAN,
Agent for the Applicant.
COMPLETE SPECIFICATION.
A New or Improved Holder for the Globes or Shades of Electrical,
Gas, and other Lamps.
I, RICHARD GEORGE EVERED, Director of Evered and Company Limited, of
Barnet Works, Birmingham, in the County of Warwick, Manufacturers do hereby
declare the nature of my invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
•
,'
My invention has reference to lamp globe or shade holders in which three or
other number of radial arms capable of moving outwards and inwards, that is, from
and to the centre are employed to effect the holding and liberation of the globe or

page_text: shade and consists of mechanism of the kind hereinafter described for effecting
the motions of the said arms.
A circular disc having a central opening has three or other number of radial
slots made in it. In each of these slots an arm slides, the outer ends of the said
arms being so shaped that when the said arms are at their greatest distance from
the centre of the disc they engage under a neck or contraction in the globe or shade
and hold it in position. When the said arms are withdrawn, that is, are moved
towards the centre of the disc, the globe or shade is liberated.
The motions of the arms are effected in the following manner.
A ring concentric with and working around the central opening in the disc has a
series of links jointed to it equal in number to the arms of the holder. The outer
ends of these links are jointed to the slides carrying the arms hereinbefore referred
to and when the ring is turned in one direction the slides are by means of the said
links drawn inwards, that is, towards the centre and when the ring is turned in the
opposite direction the slides are by means of the said links forced outwards.
The latter position of the arms, which is their normal position, is maintained,
when they are not pressed inwards by the hand, by a coiled or other spring. A
radial arm fixed to the said ring projects through a slot in the case of the holder
and terminates in a knob or thumb plate by which the said ring can be moved in
the direction proper to withdraw the arms.
When it is wished to attach the globe or shade the knob or thumb plate is
pressed from its normal position and the sliding arms are withdrawn. The globe
or shade is put in position and the pressure being removed from the said thumb
plate the arms are made by the action of the spring to move outwards and engaging
in the neck of the globe or shade fix the globe or shade in position. Or the links
may be arranged to force the sliding arms inwards or towards the centre of the
disc for bolding or gripping the globe or shade.
I will now proceed to describe with reference to the accompanying drawing the
manner in which my invention is to be performed.
Figure 1 represents in clevation and Figure 2 in vertical section a holder, con-
structed according to my invention, for supporting the depending globe or shade
of an electrical lamp, the holding arms of the said holder moving or being pressed
inwards or towards the centre of the holder for engaging them with the neck or
contraction at the top of the globe or shade;
Figure 3 represents in elevation, the disc in which the arms of the holder work,
together with the concentric ring for working the said arms, the cap or cover of
the bolder being omitted and
Figure 4 represents the same in section, the holding arms being omitted;
Figures 5 and 6 represent plans of upperside of the parts of the holding
mechanism, the cap or cover being represented in horizontal section, and
Figure 7 represents a portion of the holder disc separately.
In Figures 1, 2, 3 and 5 the shade holding sliding arms are represented
in their normal positions, that is in their fully pressed in or closed positions and in
Figure 6 the said arms are represented in their fully opened or withdrawn positions
ready for placing the globe or shade in the holder.
The globe
or shade is indicated in dotted lines in Figure 2 held in position by
the closing of the radial sliding arms (indicated in dotted lines) upon its neck or
contracted top.
The same letters of reference indicate the same parts in the several figures of
the drawing.
a is the disc of the holder to which the cap or cover bis screwed at its margin
(see Figure 2) the shade holder being connected to the electrolier by the screwed
central part c of the cap or cover; d, d, d are three equi-distant radial slots in the
disc a in each of which slots d an arm e slides the outer end of each arm being
hook shaped as represented for engaging with the neck or contraction at the top of
the globe or shade. A portion of each radial sliding, arm e is partly pierced out
and turned up and engaged with the slot for guiding the said arm in its motion

page_text: The outer
in the slot (see Figure 3). The ring a containing the radial slots d, d, d is provided
with a central collar a around which a flat ring f works, the said ring having a
radial arm ƒ extending beyond the outside of the shade holder and working in a
slot in the cap or cover (see Figures 5 and 6). The ring has jointed to it a series
of links g, g, g equal in number to the hook shaped sliding arms e, e, e.
ends of these links are jointed at to the sliding arms e, e, e and by means of a
coiled spring i, fixed at one end to the radial arm of the ring f and at the other
end to the fixed slotted disc a, the return motion of the moving parts is effected.
To facilitate the turning of the ring f by the radial arm f a fixed projecting
knob k is situated near the said radial arm. In opening the holder the thumb is
placed against the fixed knob k and the radial arm f2 is drawn towards it by the
finger pressing the said arm as indicated by the arrow Figure 5.
When the ring is turned in one direction by pulling the said radial arm f' in
the direction indicated by the arrow Figure 5, the hooked sliding arms e, e, e are
by means of the links g, g, g forced outwards for separating them, the said arms
simultaneously sliding in the radial slots d, d, d in the disc a and elongating the
coiled spring i as represented in Figure 6; and by releasing the radial arm f the
said spring i by its contraction turns the ring f in the opposite direction and
the sliding arms e, e, e, by the action of the links 9, 9, 9 are driven inwards and
made to take the positions represented in Figures 1, 2, 3 and 5. A globe or shade
having been placed in the holder when its sliding arms e, e, e are in their fully
opened position Figure 6, the closing of the said arms by the action of the ring f
links 9, 9, 9 and spring i causes them to be forced or drawn inwards into the position
indicated in Figure 2 and their hooked ends engaged under or with the neck or
contraction at the top of the globe or shade and hold it in position.
Figure 8 represents in vertical section a globe or shade for an electrical lamp
constructed according to my invention in which the hooked sliding arms are forced
outwards to hold and support the depending globe or shade, instead of being
pressed inwards as in the globe or shade holder described, and
Figure 9 represents in plan the upper side of the same, with the cap or cover
in horizontal section. The parts of the holding mechanism are represented in
their normal positions in Figure 9.
In this arrangement the positions of the links 9, 9, 9 with respect to the
ring are reversed as represented in Figure 9, so that when the said ring fis
turned by the radial arm f in the direction of the arrow, the sliding holding
arms e, e, e simultaneously approach the centre of the shade holder and the
depending globe or shade may be placed within the holder. On releasing the
radial arm, the elongated spring i gives the back partial rotation to the ring f
and causes the links g, 9, 9 to force outwards the sliding arms e, e, e for engaging
with and supporting the globe or shade as represented in Figure 8. The sliding
hooked arms are in this holder made somewhat longer than in the holder first
described.
In applying my invention to shade holders for gas lamps and for lamps other
than electrical lamps, the holding mechanism is used in an inverted position, that
is, the sliding hooked arms are situated on the upper side of the shade holder
instead of on the underside as represented in the drawing and the cap or cover b is
omitted.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that I claim
as my invention :-
The new or improved holder for the globes or shades of electrical, gas and other
lamps herein before described and illustrated in the accompanying drawing; that
is to say a holder in which the motions of the radially sliding arms, by which the
globe or shade is held and liberated, are effected by a ring having a partial rotation
given to it by a radial arm projecting from it, the said ring working around a
central collar and having jointed to it a series of links which are also jointed to the

page_text: radially sliding arms of the holder; the said sliding arms being pressed into their
holding position by a spring acting upon the said ring, whether the radially sliding.
arms of the holder effect the holding of the globe or shade by being forced inwards,
or towards the centre of the holder, or outwards or from the centre of the holder,
the several parts being combined and acting substantially as described and
illustrated.
Dated the Sixth day of January 1893.