Improvements in Adjustable Lamp Shades.
Year: 1892

page_text: Date of Application, 19th Apr., 1892-Accepted, 21st May, 1892
COMPLETE SPECIFICATION.
Improvements in Adjustable Lamp Shades.
We, HENRY SCHLOERB, Draughtsman, and MARIA BARBARA SCHLOERB,
Gentlewoman, both of 850 Garfield Avenue, Greenville, in the County of Hudson
and State of New Jersey, United States of America, 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 :-
Our invention relates to improvements in lamp shades so arranged that the shade
may be placed at will at different angles, so as to give varying areas of shade and
light and to concentrate or deflect the light in different directions, as may be
desired. It is designed for use not only in connection with lamps, but also for gas
and electric lights.
Figure 1 represents a side elevation of a hand lamp, to which is attached the
shade with its supporting arm, hinges or pivots, and spring clasp.
Fig. 2 is a plan view of the same, omitting the lamp.
Fig. 3 is a detail side view of Fig. 2.
Figs. 4 and 5 represent, respectively, in side view and top view the shade
provided with an extension arm and a counter-balancing weight in accordance with
our invention.
Similar letters indicate like parts throughout the drawings.
A represents a lamp; B, an elliptical spring clasp made of two pieces of thin
metal clamping together over or around a central body and arranged together so as
to be separated at one end of each piece, which ends are curved or formed each
into a small circle, and the two pieces are joined at or near the other ends to an
intermediate centre pin b, passing through the inner end of the bar C, and the
adjustment made for the position is obtained by a pin c, passing through the flat
ends of the clasp B and through a segmental slot e, which is near and part of one
end of the supporting bar ().
C represents the supporting bar or arm of the shade and is adjustable to any
position that may be desired by the eccentric lever clamp d, working against one
of the flat ends of the clasp B, adjacent to the slot or link e, the pin b in the end of
the bar C being the centre from which the segmental curve of the slot c is obtained.
The edges of the said slot e have a milled serrated corrugated or roughend surface,
upon which the closed ends of the clasp B are impinged by the clamp d at the
pin c, which plays in slot e in the eccentric clamp d, thereby securing or locking
the arm C firmly in any desired position in which it may be adjusted within the
limits of the slot e. The bar C is grasped between two projecting lugs E E by a
similar pin e and by a lever clamp e, which is pivoted on the projecting end of the
pin c. Attached to lugs E E is a strip of metal, firmly affixed to said lugs EE
and to shade D by fasteners g, bearing against the outer face of the shade and
having their ends passing through the shade and through the inner strip and
clinched against the latter. The shade D, being thus connected with the arm C by
a revolving centre at pin c', may be adjusted in any desired position within the
radius of a perpendicular circle by means of the eccentric clamp e, which, acting on
the said pin and against the lug E, locks and firmly holds the shade in the desired
position. One of the lugs E may be omitted, if desired, and the pin c¹ may be
constructed with a shoulder, and such combinations will answer the same purpose.
Eccentric cams or screws may also be substituted, if desired, in the place of
eccentric lever clamps d and e where the same are shown, as in Figs. 4 and 5.
The sliding bar C³, Fig. 4, may be added for the purpose of extending or
contracting the length of the arm supporting the shade, if desired, as shown in
Figs. 4 and 5.

page_text: .
The shade D may be composed of bristol or card board or other suitable opaque
material, and may, if desired, have a reflecting inner surface, so as to more
strongly reflect the light, and may be of any desired shape and either plane or
curved.
Fig. 4 is a view of the bar C, to which is attached an extended bar C¹, sliding in
ways N N on the bar C, k representing screws which may be used in place of
eccentric clamps for the purpose of clamping the bar C and the shade D in the
position desired. In this figure K represents the Y-shaped arms of a bar L, hooked
into the circled ends of the clasp B to support a counter weight M, which counter
weight may be of lead or other metal. A plan view of Fig. 4 is shown in Fig. 5.
Fig. 5 represents means for counterbalancing the shade when adjusted to a hanging
or swinging lamp or light, in which is shown the extension bars C C', and the other
parts, as in Fig. 4, the counterweight bars KL, and the counterweight M, attached
as aforesaid and adjustable, so as to balance the shade D.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination, with light producing devices, of a shade, a strip f, secured
to the inner side thereof, and having two parallel lugs E, a bar C, having one end
pivotally clamped between said lugs and the opposite end carrying a pin b and a
segmental slot between the two ends, with a spring clasp consisting of two metal
plates, each having a curved end and a flat end, and the pivot pin b between said
ends, the flat ends being united together and to the bar C, through the segmental
slot of the latter, substantially as described.
2. The combination of a shade, a strip f, secured to the inner side thereof, and a
fastener bearing against the outer face of the shade and having its ends passing
therethrough and through the strip f, with lugs E, projecting from the inner face
of the strip f, and a bar C, having one end pivotally clamped between said lugs and
the opposite end pivotally clamped between the arms of a spring clasp, substantially
-as described.
3. The combination of a lamp shade, its support, and lamp clasp with a bar
having Y-shaped ends hooked into the curved ends of the metal clasp, and a
weight adjustably retained upon said bar to counterbalance the shade, substantially
.as described.
4. The combination, with a lamp shade D, of the supporting bar C and C¹,
constructed as described and shown, and the elliptical spring or clasp B, connected
by pins, being revolving centres, governed and fixed as to position by clamping
devices and counterweighed by the bar K L and weight M, substantially as set
forth, all for the purposes specified.
Dated this 10th dox of Anvil 1909
F. W. BARKER,
Applicants' Agent.