Improvements in Adjustable Shade Supports for Electric and the like Fittings.
Year: 1898

page_text: Improvements in Adjustable Shade Supports for Electric and the like
Fittings.
I, WILSON HENRY STURGE, of 17, Frederick Road, Edgbaston, in the City of
Birmingham, Electrical Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to means for adjustably supporting shades, reflectors,
or the like, and primarily intended for electric light fittings, but which may be
also used in similar fittings for lights capable of being tilted to some desirable
angle.
According to this my invention, and as applied to an electric lamp suspended
from a flexible wire (cord), I make a bowlike frame having at its crown a swivel
bearing, which works in or upon a suitable shoulder on the lower part of the
usual cord grip. This swivel permits a movement in the horizontal plane. The
two lower ends of this frame are prepared to form pivot joints for a second cross
frame whose outer ends are shaped accordingly and connected thereto by suitable
pins or screws upon which are preferably also carried frictional springs or
washers, so that when tightening up such screws the desired friction between
such joints may be sufficient to prevent any unintentional gravitating movement
of the cross frame &c. This cross frame is preferably also somewhat bow shaped
for purposes hereinafter named, but may not be so shaped. At the crown of this
frame a circular ring is formed through which the lamp holder is passed. This
portion of the holder is screw threaded to receive a screw nut. The shade or
reflector is secured between the circular ring of the frame and the screw nut.
to which may be added any desirable washers &c. Hence by means of the said
nut the shade and the ring are secured firmly against a shoulder upon the lamp
holder. The height of the bow of this cross frame is such that about an equal
portion of the combined weight of the holder, frame, and the shade, lies above
and below the centre line of pivot movement, consequently it depends little cr
none upon the frictional contact at such pivot joints, and is therefore readily
and lightly moved to any desired angle in a vertical plane, while the upper, bow
frame permits any horizontal movement, thus altogether affording an universal
adjustment of position to the shade &c.
The pivot joints, one upon each side appears to be preferable, but if desired
the lower frame may be carried from the one side only of the upper frame.
Dated this 28th dow of Anil 1000

page_text: Improvements in Adjustable Shade Supports for Electric and the like
Fittings.
I, WILSON HENRY STURGE, of 17, Frederick Road, Edgbaston, in the City of
Birmingham, Electrical Engineer, 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 means for adjustably supporting shades, reflectors,
or the like, and primarily intended for electric light fittings, but which may be
also used in similar fittings for lights capable of being tilted to some desirable
tangle.
In order to more clearly explain this my invention, I have appended hereunto
an illustrative drawing, upon which are figures and numbers of reference, similar
numbers referring throughout the several views to the same thing or part.
Fig. 1, is a part sectional front view of one form of this my invention.
Fig. 2, is a side view of the invention as shown in Fig. 1, but turned at an
angle.
Fig. 3, is a front view of a modified form of this my invention.
Fig. 4, is a side view of the modified form shown in Fig. 3, but again turned
at an angle.
According to this my invention, and as applied to an electric lamp suspended
from a flexible wire (cord) as shown in Figs. 1 and 2, I make a bowlike frame 8,
having at its crown a swivel bearing 9, which works in or upon a suitable
shoulder 10, on the lower part of the usual cord grip 11. This swivel permits a
movement in the horizontal plane. The two lower ends 12, 12, of this frame
are prepared to form pivot joints for a second cross tilting frame 13, whose outer
ends are shaped accordingly and connected thereto by suitable pins 14, upon
which are carried frictional springs 15, so that when tightening up such pins 14
by rivetting, the desired friction between such joints is sufficient to prevent any
unintentional gravitating movement of the tilting frame 13. This frame 13, is
preferably also somewhat bow shaped for purposes hereinafter named, but may
not be so shaped. At the crown of this frame a circular ring 16, is formed
through which the lamp holder 17, is passed. This portion of the holder is screw-
threaded to receive a screw nut 18. The shade or reflector 19, is secured between
the circular ring 16, of the frame 13, and the nut 18, to which may be added any
desirable washers &c. Hence by means of the said nut 18, the shade 19, and
the ring 16, are secured firmly against a shoulder 20, upon the lamp holder. The
frame 13, is therefore readily and lightly moved to any desired angle in a vertical
plane, while the upper bow frame permits any horizontal movement, thus alto-
gether affording an universal adjustment of position to the shade &c.
In Figs. 3 and 4, I have shown a modified form of this my invention in which
the lamp is carried upward instead of downward, and in which the fixed frame 8",
is now carried upon the lamp holder 17, while the movable frame 13%, is secured
with the shade 19, the pin 21, being screwthreaded to receive the screw nuts 22,
23, and ornamental washers 24, 25, between which the shade is held.
The two frames 13ª, and 8ª, are pivoted at 12, 12, as before described with the
same frictional spring device, and capable also of the same adjustable positions.
The pivot joints, one upon each side appears to be preferable, but if desired
the lower frame may be carried from the one side only of the upper frame, with
its friction spring as before explained.

page_text: Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. Supporting the shade 19, by means of the tilting frame 13, adjustably
pivoted to frame 8, by the frictional spring device 15, the said frame 13, being
adjustably carried from the cord grip 11, by swivel ring 9, substantially as set
forth and shown in Figs. 1 and 2.
2. The modified arrangement of supporting the shade 19, upon and by the tilt-
ing frame 13, from the lamp fitting 17, by means of the spring frictional
joints 12, 12, with frame 8", substantially as set forth and shown in Figs. 3 and 4.
Dated this 28th day of January 1899.
CHARLES T. POWELL,
Applicant's Agent, 158, Edmund Street, Birmingham.