Improvements in Attachments or Fittings for Electric Light Sliding Pendants, Electroliers, and Stand and other Extension Lamps.
Year: 1891

page_text: Date of Application, 12th Feb., 1891
Complete Specification Left, 20th Oct., 1891-Accepted, 21st Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in Attachments or Fittings for Electric Light Sliding
Pendants, Electroliers, and Stand and other Extension Lamps.
We, WILLIAM REUBEN LANE General Manager of Winfields Limited of
Cambridge Street Works in the City of Birmingham, and JOHN COTTRELL of
82 Princess Road Edgbaston near Birmingham, aforesaid, Brassworker do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in the overhead fittings, or attachments,
of electric light, and sliding pendants, electroliers, and like lamps, and which
invention, is also applicable to electric light stand or extension lamps, having
flexible conducting wires, for tables and floors.
the dispensing with exposed or outside
The primary object of our invention,
wires, although insulated in the usual manner.
The raising and lowering of the slide, consequent upon the lamp's position
requiring to be changed, is performed by conducting the cable over and around a
spring drum or pulley, with an inner portion between pulley and ceiling rose,
running slack, when extension of the slide takes place, and coiling around the axis
of the drum, or around the smaller drum, its equivalent, when raised.
The leading wires are connected to the cable, and the said cable may be secured
to the sliding part of the pendant or the like, by a clamping device, so that on the
raising and lowering of the lamp, the cable is drawn down within the hollow of
the pendant or the like, and when liberated, is again drawn up over the pulley, by
the action of the spring, which became wound up, or tension imparted to it, by the
downward movement.
In carrying out our invention in connection with a sliding pendant, or a sliding
electrolier, we take an ordinary hollow outside down-pipe, surmounted by an
inverted bell-shaped chamber, wherein a drum or pulley, turni ig upon a horizontally
directed axis, works, and around which drum or pulley and axis, the cable is wound,
and let slack, respectively, as aforesaid.
This pulley, which has flanged edges, is boxed within its middle, wherein a
volute or coiled spring is enclosed, and with its in ter end attached to the fixed
chamber or framing, through the intervention of a sleeve, and with the other and
outer end to the pulley.
A flange or rim of the chamber, is connected to a vulcanite or other non-con-
ducting ceiling plate, wherethrough the cable inwardly passes into the chamber,
from thence around the pulley axis, and through the pulley to its circumference.
The cable which lies and fits between the ceiling plate and pulley, runs slack and
coils as aforesaid, consequent upon the rotation of the pulley in one or other
direction.
Disposed and sliding within the down pipe, is a hollow rod or tube, down which,
or wherethrough, the cable passes and is secured by the segments of a wooden cone,
drawn together by the same lying within a coned recess of a neck of the body part
of the pendant, having screwed within it, a terminal, of the sliding part, or hollow
rod, which is channelled longitudinally, and wherein a pin of he other part, takes,
and prevents the said slide from rotating, and the consequent non-twisting of the
cable, or the leads running from the cable.
A stuffing box around the slide at the lower termination of the fixed down pipe.
The packing within the said stuffing-box, creates resistance to the movement of
the parts, and acts as a counterpoise in preventing the return and too-free move-
nent of the slide, or in other words, it balances the pulling of the spring against
he tendancy to pull the slide into its raised position.

page_text: The cable, or the wire or wires directed to the electric lighting appliance, is, or
are, by our invention, hidden from view, protected from external injury, and danger
by them prevented.
Instead of the cable passing around the drum, and the outside part between
ceiling plate and drum running slack on extension, the leads may do the same, and
the cable in this case, may terminate at the ceiling plate.
The leads, or leading wires may pass up the sliding part, and the cable up the
fixed part, terminating in the fixed chamber or enclosure, wherein the drum works.
The application of our invention to upright and extension lamps, for tables and
floors, differs in no essential respect to its application to a pendant, as hereinbefore
described, other than that the cable lying beyond the foot or base, may be loose, to
allow the lamp's position to be changed.
Dated this 11th day of February 1891.
WILLIAM REUBEN LANE.
JOHN COTTRELL.
By Henry Skerrett,
Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Attachments or Fittings for Electric Light Sliding
Pendants, Electroliers, and Stand and other Extension Lamps.
We, WILLIAM REUBEN LANE General Manager of Winfields Limited of
Cambridge Street Works, in the City of Birmingham and JOHN COTTRELL of
82 Princess Road Edgbaston, near Birmingham aforesaid, Brassworker, 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:
This invention relates to improvements in the fittings or attachments of sliding
or extension electroliers, electric light pendants, brackets and pillar lamps for
tables and floors having extension means.
According to our invention, a part of the cable from which the leads run, is con-
ducted or wound around a pulley or drum, and also around a sleeve rotating with
the drum. The lowering of the electrolier or pendant, pays out the cable from the
drums, and winds a slack part disposed between the side of the pulley and ceiling
plate, upon the sleeve. The rising of the electrolier or pendant, coils the cable
again around the pulley, and runs that part from the sleeve, slack.
Thus, the leading wires run from the cable, which is secured to the sliding part
of the electrolier or pendant by a clamping device, so that on the lowering of the
moveable part of the said electrolier or pendant, the cable is payed out from the
drum, and drawn down the middle of an inner and hollow rod of the fixed part of
the said electrolier or pendant.
Again on the liberation of the moveable parts, the cable is again drawn up, and
coiled over and around the pulley by the action of the spring, which has been wound
up by the previous downward movement.
By our invention, there are no exposed wires to be unsightly or get injured.
In carrying out our invention in connection with a sliding electrolier, we take an
ordinary hollow outside down-pipe, surmounted by a chamber, wherein a combined
drum or pulley and sleeve, work upon a horizontal axis, directed across the said
chamber.
Around the pulley a part of the cable is wound, while an adjacent portion passes
slack around the sleeve.
This pulley, which has flanged edges, is hollow within its middle, wherein a volute
or coiled spring is enclosed.
The chamber of the pulley part, is connected to a vulcanite or other non-
conducting ceiling plate,

page_text: The cable, which is directed through the ceiling plate, first runs slack over the
sleeve, then passes through the side (made fast) of the pulley, and then over its
periphery. Disposed and sliding within the down-pipe, is a hollow rod or tube,
down which, or wherethrough, the cable downwardly passes, and is then secured, by
a clamping device, to the moveable body part of the electrolier.
Rotation of the sliding parts is prevented, by a pin or lug on the inside of the
outer tube, taking into a longitudinal channel on the inner one. A stuffing box
may surround the slide, at the lower termination of the fixed down pipe.
The packing within the said stuffing box, creates resistance to the movement of
the parts, and acts as a drag in preventing the return and too-free movement of the
slide, or in other words, it balances the pulling of the spring, against the tendancy
to pull the slide into its raised position.
The cable, or the wire or wires directed to the electric lighting. appliance, is or
are, by our invention, hidden from view, protected from external injury, and danger
by them prevented.
Instead of the cable passing around the drum, and the outside part between
ceiling plate and drum, running slack on extension, the leads may do the same, and
the cable may in this case terminate at the ceiling plate.
The leads or leading wires may pass up the sliding part, and the cable up the
fixed part, terminating in the fixed chamber or enclosure, wherein the drum of two
diameters, or a combined drum and sleeve works.
The application of our invention to upright and extension lamps for tables and
floors, differs in no essential respect from its application to a pendant, as herein-
before described.
Figure 1 of the accompanying drawings, represents in elevation, a sliding
electrolier, provided with overhead fittings or attachments, constructed and arranged
according to our invention.
The said attachments consist essentially of a spring drum of two diameters,
turning upon a fixed spindle, directed through and carried by a box ceiling-rose,
directed at the upper terminal part of an inner and depending tube, upon which
an outer tube slides, hence a pendant on the cable from which the leads proceed
being directed up the said inner tube, and around the periphery or peripheries of
the pulley, and from thence through the ceiling plate to the electric source of
supply.
Figure 2: represents upon an enlarged scale to that of Figure 1, the upper and
middle portions of the said electrolier or electric light pendant.
This said view exhibits the spring pulley, and the cable surrounding the larger
periphery, and how the same passes through the sides of it, from the smaller one,
to which latter, the said cable passes through the ceiling plate, and further the said
sectional view shows how the lower part of the cable is held.
Figure 3 represents a section of the said ceiling rose, at right angles to that of
Figure 2; while Figure 4, is a transverse section on the dotted lines A, B, Figure 2,
showing the split clamping gland, for holding the cable in a fixed position, relative
to the lower part of the electrolier.
a is the body part of the electrolier, a* the arms, and a³ an outside and sliding
tube or hollow rod, connected to the upper part of the said body, and having
counterpoised weights b, suspender from chains e, directed from, and connected to,
the upper part of the said tube or hollow rod, and with the said chains passing
over pulleys d, carried by outstanding brackets &, hung from or connected to the
upper part of a fixed and depending tube or inner hollow rod e', which is surmounted
by an inverted bell shaped chamber or ceiling rose e, wherein a drum or pulley f,
turning upon a fixed horizontal axis 9, works.
Connected with the said pulley, see Figure 3, is a sleeve or hollow axle f',
turning with the said pulley, and around which pulley and sleeve, the cable h
passes, with the fore part h³, of it, directed through the insulating ceiling plate e³,
and from thence to the source of electric supply.
The other end of the cable, is directed down the middle of the inner tube or

page_text: hollow rod e', and is fixedly connected to the upper part of the body part of the
electrolier, by a split gland i, having coned sides, which are arranged to grip and
hold the cable, on the screwing home of the outside tube a*, to the said body part.
The pulley, is recessed or boxed, and wherein a volute or coiled spring j, is
located, and with the outer end 1, connected to the inside of the said boxed part,
and the inside end 1, connected to the axis,
9.
The pulley f, and its hollow axle f³, move together, while the cable h, passes
through the side of the pulley f, and is there rigidly connected at h', in
manner that, on the rotation of the said pulley and its sleeve, which is an
equivalent to a second pulley, of a less diameter than that off, the middle
parth, of the said cable, or that part lying between the pulley or drum, and
ceiling plate, lies loose around the sleeve, and is in length, equal in amount to
that quantity which would coil itself around the said sleeve, on the fully uncoiling
of the other part of the cable lying around the pulley, on the pulling down of the
body of the electrolier, and its outer sliding tube connected with it.
Thus, the part h, of the cable, when the body of the electrolier is up, as in
Figures 1 and 2, is disposed slack or loopwise around the said sleeve, with the
pulley f, wound with cable in length equal to the slide of the electrolier, or in
other words, by the raising of the electrolier body and its sliding tube, the upper
part of the cable lying within the inner tube, is drawn up, and coiled around the
pulley, by the action of the spring j, rotating it, while at the same time, the cable
lying and coiled around the sleeve, is uncoiled, and lies loose, as represented in
Figure 3.
By pulling down the electrolier, or the body part with its sliding tube, the cable
from the pulley, is paid out, drawn down the inner and fixed tubing e, and the
coiled spring, compressed, and that portion of the cable marked ', which
previously lay loose, is now coiled around the sleeve.
Rotation of the parts is prevented, by a rib or snug k, on the inside of the
terminal cup of the outer tube, engaging with a longitudinal channel 1, in the inner
and fixed one.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
==
First: In sliding electroliere, and other sliding electric light fittings, rigidly
connecting a part, or an inner part of the cable, or the leads of a cable, to the
main coiling pulley, or to one side of the said pulley, of the one part, and to the
ceiling plate rose or other like fixture of the other part, and also leaving the said
cable part so disposed, loose or slack, substantially as, and for the purpose, as
described and set forth.
Secondly-The combination with a cable coiling pulley of two diameters, or a
combined main coiling pulley and sleeve, of a slack length of cable, encircling the
smaller pulley or sleeve, and made fast at two points,. whereby the paying out of
vable from the main pulley, on the distension of the sliding part of the electrolier
or fitting, coils the said slack part around the smaller pulley or sleeve, while by
the recoiling of the cable again around the main pulley, the part confined between
two fixed parts is run slack, substantially as described and set forth.
Thirdly: The improvements in the fittings of electroliers or other electric light
apparatus, substantially as described and set forth.
Dated this 10th day of October 1891.
WILLIAM REUBEN LANE.
JOHN COTTRELL.
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicants.