IMPROVEMENTS IN SUSPENDING GASALIERS, CHANDELIERS, AND OTHER LAMPS
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by Christian Dietrich Ernst Kramme at
the Office of the Commissioners of Patents on the 15th June 1876.
CHRISTIAN DIETRICH ERNST KRAMME, of Berlin, Prussia, in the Empire of
Germany. "IMPROVEMENTS IN SUSPENDING GASALIERS, CHANDELIERS, AND OTHER
LAMPS."
This Invention relates to improvements in suspending either gasaliers, chandeliers,
petroleum, legroin, parafin oil, or other lamps, and has for its object the dispensing
with the use of the counterbalance weights hitherto generally employed and the
machinery and apparatus necessary therefor.
For this purpose I proceed as follows:-To the ordinary metal socket or base
piece, which is fixed in the ceiling, I attach a tube of any suitable dimensions.
This tube may screw into such socket piece in the ordinary manner, or be attached
thereto in any other suitable and convenient way. Such tube is furnished in its
interior with a rack and pinion bar of a corresponding length to the tube itself,
made of steel and firmly screwed or welded to the tube. Within such first tube
is a second or movable tube or pipe of any suitable dimensions, to the lower end of
which is attached the lustre, gasalier, or lamp. This movable tube or pipe is
tightened by means of a suitable stuffing box conveniently placed towards its lower
extremity, and on the exterior thereof towards the top is fixed in any suitable
nanner a clutch which catches into the rack and pinion before described. In
order to ensure this. clutch so catching into the bar the internal movable tube or
pipe is also provided on its exterior towards the top with a spiral spring, which
by means of a hook enters behind the rack and pinion bar and forces the clutch
to gear into and firmly hold the bar.
To raise or lower the gasalier, chandelier, or. lamp, it is only necessary to slightly
lift the lustre, gasalier, or lamp, which is attached, as already explained, to the
lower end of the internal movable pipe or tube, thereby dislodging the tooth of the
clutch from the rack and pinion bar, then while turning it a little towards the right
bring it to the desired level, after which permit the gasalier or lamp to drop, when
the spiral spring expanding forces the clutch to gear into the rack and pinion bar
and thus firmly and easily suspends the lamp or gasalier in the desired position.
To prevent all risk of the spiral spring breaking when the internal movable pipe
is being turned round, a small metal projection is either formed thereon or fastened
thereto near the top, which coming in contact with the rack and pinion bar before
described thus effectually prevents the internal movable pipe revolving to far,
[Price 2d.]

page_text: while conveniently placed on the exterior of such pipe are two other small
projections or pieces which serve as guides to retain such internal movable pipe
in a proper position within the external or outer tube first described.
By the use of my improved method of suspending gasaliers and lamps the
awkward and complex arrangement of counterbalance weights, and the in-
convenience and annoyance consequent upon their derangement, is entirely dis-
pensed with, at the same time that increased facility of raising or lowering lamps
or gasaliers combined with greater clegance of appearance is obtained.