IMPROVEMENTS IN THE METHOD AND MEANS OF SUSPENDING CHANDELIERS FOR GAS OR OTHER LIGHTS AND ADJUSTING THEM TO THE REQUIRED HEIGHT
Year: 1874

page_text: LETTERS PATENT to William Frederick Lotz, of 19, Carter Lane,
Saint Paul's, London, Lamp Manufacturer, for the Invention of
"IMPROVEMENTS IN THE METHOD AND MEANS OF SUSPENDING CHANDELIERS
FOR GAS OR OTHER LIGHTS AND ADJUSTING THEM TO THE REQUIRED HEIGHT."
-A communication from abroad by Bradley and Hubbard, of
Barclay Street, New York, United States of America, Lamp
Manufacturers.
PROVISIONAL SPECIFICATION left by the said William Frederick Lotz
at the Office of the Commissioners of Patents, with his Petition,
on the 29th August 1874.
I, WILLIAM FREDERICK LOTz, of 19, Carter Lane, Saint Paul's,
London, Lamp Manufacturer, do hereby declare the nature of the said
SUSPENDING
Invention for "IMPROVEMENTS IN THE METHOD AND MEANS OF
CHANDELIERS FOR GAS OR OTHER LIGHTS AND ADJUSTING THEM TO THE REQUIRED
HEIGHT," to be as follows:-
This Invention for improvements in the method and means of
suspending chandeliers for gas or other lights and adjusting them to the

page_text: required height, consists, in the first part of the Invention, in an elevator
and spring combined and arranged with a lever brake and the head or
upper part of a slide tube when said tube is applied to a rod and sup-
ported by springs; also in a check or lever brake, a spring, and an
elevator arranged and combined together, and with the said rod a slide
tube and springs.
In the second part of the Invention there is employed with the rod
and tube to slide thereon an additional tube and a friction and holding
apparatus to slide on the first-named tube, and to support the lamp or
burner; also a coupling screw tube, a male screw, and suspension rod,
arranged and combined together.
On the stationary guide or gas tube hanging from the ceiling a tube
is fitted to slide up over it, the lower end supports the burner carrier or
chandelier, a cross head attached is connected to the hanging rod or tube
by helical springs. Fixed to the upper part of the tube is a tubular and
furcated head, between the prongs of which a lever brake is arranged,
also pivoted to the prongs; the rod extends through the lever brake.
A helical spring is fixed to the brake, and a branch extending from the
head serves to draw down the lever brake so as to cause it to grip or
bind upon the rod. To the lever brake is applied an elevator rod, and
on pressing it upwards the force of the lever brake spring is overcome
and the grip on the rod relieved, the tube may then slide up and down;
to prevent the lever brake going too high a check is arranged.
Instead of the tube to which the lamp or burner is affixed sliding on
a solid rod it may have a tube to slide lengthwise with it, and upon a
such a rod the lever brake apparatus embraces the tube. The tube near
its upper end is furnished with a rosette and a tubular neck and clamp
screw screwed laterally into the neck, and against the supporting rod on
which the neck and tube slide longitudinally the rod at its upper end is
provided with a disk or head, from which projects a male screw and a 3
coupling or tube with a female screw. This enables the pendant to be
adapted to rooms of different heights, and it may be either screwed into
the ceiling or upon the end of a gas conduit, and the male screw may
enter into the pipe.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Frederick Lotz in the Great Seal Patent
Office on the 24th February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
FREDERICK LOTz, of 19, Carter Lanc, Saint Paul's, London, Lamp
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of August, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-eighth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said William Frederick Lotz, Her
special license, that I, the said William Frederick Lotz, my exccutors,
administrators, and assigns, or such others as I, the said William
Frederick Lotz, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise; and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an In-
vention for "IMPROVEMENTS IN THE METHOD AND MEANS OF SUSPENDING
CHANDELIERS FOR GAS OR OTHER LIGHTS AND ADJUSTING THEM TO THE REQUIRED
HEIGHT," (a communication to me from abroad by Bradley and Hubbard,
of Barclay Street, New York, United States of America, Lamp Manu-
facturers,) upon the condition (amongst others) that I, the said William
Frederick Lotz, my exccutors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Frederick Lotz, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, reference being had to the
Drawings hereunto annexed, that is to say :-
Figure 1 is a front elevation of the improved extension mechanism;
Figure 2, a side view; Figure 3, a vertical section.

page_text: Figure 4, a front elevation of the improved extension mechanism
shewing a different mode of construction; Figure 5, a vertical central
section of the same.
The first part of the Invention may be said to consist as follows, viz.,
in an elevator and spring combined and arranged with a lever brake and
the head or upper part of a slide tube when said tube is applied to a
rod and supported by springs, all substantially as and for the purpose
and to operate as herein-after explained. Also in a check or lever brake,
a spring, and an elevator, arranged and combined together, and with the
said rod a slide tube and springs, all being as and for the purpose and to
operate as herein-after explained.
In the second part of the Invention there is employed with the rod
and tube to slide thercon an additional tube and a friction and holding
apparatus to slide on the first-named tube and to support the lamp or
burner; also a coupling screw tube, a male screw, and suspension rod,
arranged and combined together, and to operate as hercin-after explained.
In the Drawings A denotes the stationary guide rod extending down
from the hanger B; C is the tube which receives and slides upon the
said rod A, and at its lower end supports the burner carrier or chandelier;
tho said tube is provided with a cross head or bar D, which at or near
its ends is connected with the hanger by counterbalancing helical
springs E, E. Fixed to the upper part of the tube C is a tubular and
furcated head F, between whose prongs a, a, a lever brake G is arranged,
it being also pivotted to the said prongs. The rod A extends through
the lever brake in manner as represented. A helical spring H fixed to
the brake and a head F¹ extending from the head F serves to draw
downward the lever brake so as to cause it to grip or bind upon the rod ;
there is applied to the lever brake an elevator or stiff rod I which is
extended down from it and loosely through a guide arm K projecting
from the cross bar D, there being a knob c on the lower end of the said
elevator. By applying the hand to the knob and pressing it upwards
the force of the lever brako spring may be overcome and such brake be
moved so as to relieve from its grip the rod A in order to permit the
tube C to be slid either upward or downward upon the slide rod. In
order to prevent the lever brake while being clevated from going too
high so as to operate to stop or hinder the movement of the tube C there
is fixed to the head F a check L, which is a rod going through a slot e

page_text: in the lever brake, and provided with a head f, all being as and arranged
as shown. In said mechanism the brake spring is not connected with a
pull" or cord, but is fastened to the head F and is in constant tension, .
the brake being relieved of such only by upward pressure exerted on
and by the elevator.
In Figures 4 and 5 of said Drawings, instead of the tube C to
which the lamp or burner is to be affixed or suspended being made to
slide on a solid rod it has a tube C' to slide lengthwise with it, and upon
such a rod the lever brake G of the lever brake apparatus shown at G¹
being to embrace the said tube C¹. The tube C¹ near its upper end is
furnished with a rosette J, and tubular neck M, and a clamp screw N,
the latter being screwed latterly into the neck and against the sup-
porting rod A upon which the neck and tube slide longitudinally, the
clamp scrow serving to fix the neck to the rod. The said rod A at its
upper end is provided with a disk or head O, from which there is pro-
jected, as shown, a male screw P and a coupling or tube Q provided
with a female screw g; the tube is concentric with the screw P, all
being as shown.
The addition of the tube C¹ and its clamp screw N to the rod A and
the tube C provided with the brake mechanism enables the pendant
to be adapted to rooms of different heights. Furthermore, with the
screw P and screw coupling Q the pendant may be either screwed into
a ceiling or upon the end of a gas conduit or tube projecting therefrom,
the disk or head O serving to enable a person to readily revolve by one
or both hands the rod, and the screw and coupling, in order to effect
either the attachment of the pendant to a ceiling or gas pipe, or the
removal of such pendant from such ceiling or gas pipe as circumstances
may require.
From the above it will be seen with respect to the co-operative action of
the screw P and the coupling Q that when the part O is used to sustain
the pendant the coupling Q acts as a shoulder against the ceiling; also
that when the coupling Q is used on a gas conduit the screw P will
extend up into the said conduit, and not only allow the coupling to be
screwed to it but serve to steady the connection..
Upon the lower end of the short rod a projecting down from the slide
tube C a screw his cut to receive the lamp or chandelier, or a nut R
provided with one or two hooks or hooked arms i, i. Upon either one

page_text: "
of such arms a “German study lamp may be hung, and the apparatus
or pendant thus be utilized for the purposes of supporting such a lamp.
:
The brake mechanism G³, herein-before mentioned, as applied to the
tubes C and C' consists of the lever brake G with its elevator or operative..
rod I and spring H connected with it and the head F¹, and also provided
with a check L, all being as represented.
Having now described and particularly set forth the nature of the
said Invention, and the manner of carrying the same into effect, I would
have it understood that what I claim is,―
The elevator I and spring H combined and arranged with the lever 1
brake G and head F or upper part of the slide tubo C, said tube being
applied to the rod A and supported by springs E, substantially as
represented.
Also the check L, lever brake G, spring H, and the elevator. I,
arranged and combined together and with the rod A, the slide tube C, 1
and springs E, substantially as represented.
Also the lamp pendant or chandelier extension, substantially as
described, composed of the rod A, the tube C', head M, clanip screw N,
the tube C, and the clamp lever G, spring H, head F¹, elevator I, and
the check L, substantially as represented.
Also the coupling screw tube Q and the male screw P arranged
together and combined with the suspension rod A of the lamp pendant,
all substantially as and to operate as explained.
In witness whereof, I, the said William Frederick Lotz, have here-
unto set my hand and seal, this Fifth day of February, in the 2
year of our Lord One thousand eight hundred and seventy-
five.
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