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Патент USA US2406480

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Aug. 27, 1946.
Filed July 15, 1944'
Patented Aug. 27, 1946
2,406,480 .
Walter A. Trat'sch, Chicago, Ill.
Application July 15, 1944, Serial No."545,080 '
This invention relates to certain novel im-‘
provements in reading lamps. More speci?cally
the invention relates to a reading lamp which
(Cl. 240-4) 7
a smaller‘ diameter ‘than 'the' section ‘IT SO as to
?t therein for reasons and in the manner herein- .
after set forth. The section I8 is secured in any
suitable manner to the socket l4 and at its outer
of the bed and has for its principal object the 5 end provides a Wall IS. The section |“|, like the
provision of an improved construction of this > section I8, is semicircular in cross section and, at
character which will be highly efficient in use and
one end, section I‘! provides a collar 20 adapted
may be attached in a suitable manner to the head
economical in manufacture.
to rotate freely upon the socket l4. The opposite
One of the objects of this invention is to pro
end portion of the section I8 provides a wall 2|,
vide a reading lamp especially adapted for at 10 and this wall 2| by means of a pin 22 is rotatably
tachment to a bedstead at the head thereof and
connected to the end wall l9.
constructed in such manner as to permit the user
Carried by the collar 20 is a segmental con
to increase or decrease the ?eld of light to the
ductor ring 22, Fig. 3, and this conductor 22 has
comfort and convenience of the user.
contact with a head 23 of a conductor 24. Fig. 2,
A still further object of the invention is the pro 15 in turn having connection With the cup 25 of the
vision of means for permitting the above adjust
socket l4 into which the bulb I5 is threadably
ment without requiring the bed light to be de
tached from its ?xed position upon the bedstead
Secured to the section H on opposite ends
and without extinguishing the light.
thereof as at 26, are the ends 21 of a cord 28. This
A still further object of the invention is the 20 cord 28 has one branch 29 thereof payed through
provision of means for accomplishing the above
an opening 30 formed in a guide block 3| secured
adjustment, which is simple in nature and re
as at 32 to the cover section | 8. The other branch
quires very little effort on the part of the user to
33 of this cord is payed through an opening 34
bring about the desired result.
formed in the block 3|. Any means may be em
25 ployed for attaching the bed light to the bedstead
Other objects will appear hereinafter.
The invention consists in the novel combination
and arrangement of parts to be hereinafter de
In use, when the sections I‘! and I8 are in op
scribed and claimed.
posed relation with respect to each other, they
The invention will be best understood by refer
provide a complete enclosure for the electricbulb
ence to the accompanying drawing showing the
l5. In this position of the sections I1 and Hi, the
preferred form of construction, and in which:
conductor ring 22' will be rotated from engage
Fig. 1 is a fragmentary perspective View of 'a
ment with the conductor 24 so as to disconnect
bedstead showing my improved invention asso
the electric bulb from'the source of electric en—
ciated therewith;
Fig. 2 is a side elevational'view of the inven
ergy 35.‘ The user, to energize the electric bulb
and to permit the emission of the light rays from
the enclosure, will hold the cord 28 between his
or her ?ngers and, by pulling upon the left-hand
Fig. 3 is a sectional detail view taken substan
tially on line 3—3 of Fig. 2;
branch 29 thereof (Fig. 4) , the section |8wil1 be
Fig. 4 is a sectional detail view taken substan
caused to revolve within the section I‘! and in so
tially on line 4-4 of Fig. 2; and
revolving, the slit or opening 36 will be enlarged
Fig. 5 is a sectional detail view taken substan
to increase the light area. Should the reader
tially on line 5—5 of Fig. 2.
desire to reduce the light area, he does so byv
The drawing illustrates the preferred form of
applying pulling force to the right-hand cord
construction by which the several objects of my
invention are accomplished. In this connection
branch 33 to rotate the section IS in an opposite
a plug is indicated at l0. and this plug is prefer
direction thus to diminish or reduce the Width
ably arranged in, a strap I I having a resilient ex
of the slit 36.
tension |2 whereby the latter may be releasably
By this arrangement, the reader, with the mini
clamped upon a bed ?xture |3 such, for example,
degree of effort and without removing the
as a bedstead at the head thereof. Connected to 50
reading lamp from its attached position, may ade
this plug in. the usual manner is a socket I4, and
just the area of the ?eld of light. In pulling upon
threaded into this socket M is an electric bulb l5.
either of the cord sections, 29 and 33,~the force
Carried by the socket I 4 is an enclosure l6 for the
bulb l5. This enclosure |6 comprises two inter
of the pull is exerted upon the block 3|, which
?tting sections I1 and I8, the section l8 being of 55 blQCk 3! transmits the force to the section l1,
.tion 18.
sections for the emission of light from the light
‘causing the same to ‘rotate relative to the sec
source, said means comprising a cord having op
posite end portions connected to one of said sec-P
tions and a member having spaced perforations
- through which the cord is passed in opposite
2. A reading lamp comprising a socket, a light
bulb‘ mounted in said socket, an enclosure for said
'While I have illustrated and described the pre
ferred form of construction for carrying my in
vention into e?ect, this is capable of variation '
and modi?cation‘ without departing from the
spirit of the invention. 1, therefore, do’ not wish
to~vbe limited to the precise details of construc
light bulb comprising two telescopically arranged
tion set forth, but desire to avail myseli of such 10 sections each formed substantially semicircular
variations and modi?cations as come within the
‘ scope of the appended claims.
in cross section and rotatable relative‘ to each
other, means for rotating said sections relative
Having thus described my invention, ,what _I_' ' . tov each other to- provide a slit between said sec
claim as new‘ and desire to protect by Letters - ‘ tions for the emission of light from said bulb, said
15 .meanscomprising a cord having opposite end por
Patent is:
; ,
jtions connected to one of said sections and a
v 1. A’ reading lamp comprisinga source of light,,
means providing an enclosure‘ for the source of
light comprising two telescopically arranged sec-‘ ‘ V
tions, and means for rotating one of said sections
relative to the other to provide a slit between said
having i spaced
through -
which the cord is passed in opposite directions.
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