AN IMPROVED MOVABLE PARALLELOGRAMIC SUPPORT WITH STOPPING SPRING CATCH, FOR TAPER-STANDS, CONSOLS, AND OTHER SIMILAR PURPOSES, AS FOR INSTANCE GAS APPLICATIONS
Year: 1882

page_text: LETTERS PATENT to Alexandre Zwierzchowski, of Boulevard Saint Denis,
N° 1, at Paris, Civil Engineer for an Invention of AN IMPROVED MOVABLE
PARALLELOGRAMIC SUPPORT WITH STOPPING SPRING CATCH, FOR TAPER-STANDS,
CONSOLS, AND OTHER SIMILAR PURPOSES, AS FOR INSTANCE GAS APPLICATIONS
PROVISIONAL SPECIFICATION left by the said Alexandre Zwierzchowski
at the Office of the Commissioners of Patents on the 22nd November 1882.
ALEXANDRE ZWIERZCHOWSKI, of Boulevard Saint Denis, N° 1, at Paris, Civil
Engineer, AN IMPROVED MOVABLE PARALLELOGRAMIC SUPPORT, WITH STOPPING
SPRING CATCH, FOR TAPER-STANDS, CONSOLS, AND OTHER SIMILAR PURPOSES, AS
FOR INSTANCE, GAS APPLICATIONS,
This improved moveable support, bracket or branch, with toothed sector, or rack,
consists of a parallelogram, jointed at one end to a pivoting axis, and at the other,
to a guide or slide on the said support, bracket or branch. A spring click arrange-
ment engages in the teeth of the rack or sector, and fixes the support or bracket in
any desired position.
The parallelogram consists of two rods, jointed, at one end, to the axis or pivot,
and connected, at the other, to two bars or links, one of which forms part of the
guide or slide of the support. These rods move between two toothed sectors
formed in a piece with the pivot or axis.
A rod, and spring, provided with a stud or pin, forms the spring click arrange-
ment, which slides between two pieces, similar to the bars or links above mentioned,
The play of the support or bracket is regulated by means of a push piece.
The axis or pivot is mounted on a plate and is fixed at any convenient angle by
a set screw. Another screw serves to fix the support or bracket in the guide
or slide.
This bracket or branch can be arranged to support a piece of furniture, or
a table, shelf console, mirror, chandelier, or sconce, or it can be arranged as a gas
bracket or branch, for the purpose of keeping the said objects in any desired
position.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alexandre Zwierzchowski in the Great Seal Patent Office on-the-
17th May 1883.
ALEXANDRE ZWIERZCHOWSKI, of Boulevard Saint Denis, N° 1, at Paris, Civil
Engineer, AN IMPROVED MOVABLE PARALLELOGRAMIC SUPPORT, WITH STOPPING
SPRING CATCH, FOR TAPER STANDS, CONSOLS, AND OTHER SIMILAR PURPOSES, AS
FOR INSTANCE, GAS APPLICATIONS
My improved system or arrangement of moveable parallelogramic support,
bracket or branch with toothed rack or sector consists of a parallelogram jointed
'at one end to a pivoting axis, and at the other to a guide or slide in the support,
bracket or branch. A spring-click arrangement engages in the teeth of the rack.or
sector and fixes the support, bracket or branch in any desired position.
My Invention will be readily understood on reference to the accompanying
drawings, in which
Fig. 1 is an elevation, and fig. 2 a plan of my improved system or arrangement
of support, bracket or branch.
The parallelogram is composed of two rods a, a, jointed to the axis or pivot b,
at one end, and at the other end these rods a, a, are connected by the two bars,
links or pieces c, c, one of which forms part of the guide or slide d, of the support
or branch f.
The rods a, a, of the parallelogram pivot between two toothed sectors g, g, formed
in a piece with the pivot or axis b.
h, is a rod provided with a coiled spring and which terminating in a stud or pin i,
forms the spring click arrangement herein-before referred to, which slides between
the two pieces c¹,.c', similar to those marked c, c.
The play or position of the support, bracket or branch is regulated by means of
the push piece or knob k.
The pivot or axis b, is mounted on a plate l, and is fixed to any convenient place
by means of the set screw m. The screw n, serves to fix the support, bracket or
branch f, in the guide or slide d.
Now, if the parallelogram be turned the piece c will preserve its perpendicular
direction and consequently the support fits horizontal position.
On the pushpiece or knob k, being acted upon the stud or pin i, is released, and
the system is then allowed to descend until the push piece or knob is let go which
causes the stud or pin to engage in one of the teeth of the sector or rack. To raise
the system it is not necessary to act on the push piece or knob, as the stud or
pin slides over the teeth of the rack or sector.
This system or arrangement of support bracket or branch may be constructed
in all sizes, and be made to support a piece of furniture, a shelf or console, or a
candlestick, looking-glass, chandelier &c, &c, or it can be arranged as a gas bracket,
and in fact can be applied to everything relating to a support or bracket capable of
being lengthened or shortened, raised or lowered, it being optional to use one or
more sectors or racks at the base or end.
Having now described the nature of my Invention and in what manner the same
may be performed, I declare that I claim,
The improved parallelogramic support, bracket or branch having its parts

page_text: arranged, combined and operating substantially as herein described and shewn
in the drawings, and for the purposes set forth.
In witness whereof I the said Alexandre Zwierzchowski have hereunto set
my hand and seal this Sixteenth day of May in the year 1883.
Witness.
ALBERT CAHEN
Civil Engineer
ALEXANDRE ZWIERZCHOWSKI. (L.S.)
of Boulevard Saint Denis 1
at Paris