IMPROVED APPARATUS FOR HANGING ELECTRIC AND OTHER LAMPS AND OTHER ARTICLES AND FOR REMOVING THEM FROM THEIR PLACE OF SUSPENSION
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Alexander Melville Clark at the
Office of the Commissioners of Patents on the 30th August 1882. Com-
municated to him from abroad by Henry Grosvenor Fiske of Springfield in the
County of Hampden and State of Massachusetts, United States of America.
ALEXANDER MELVILLE CLARK of the firm of A. M and W. Clark of 53, Chancery
Lane in the County of Middlesex, Patent Agents IMPROVED APPARATUS FOR
HANGING ELECTRIC AND OTHER LAMPS AND OTHER ARTICLES AND FOR REMOVING
THEM FROM THEIR PLACE OF SUSPENSION." [Communicated to him from abroad
by Henry Grosvenor Fiske of Springfield in the County of Hampden and State
of Massachusetts, United States of America]
The object of this Invention is to provide means of easily and rapidly removing
electric lamps from their place when suspended for the purpose of removing
carbons repairing and replacing the lamp in suspended position. The Invention is
also applicable to other suspended lamps and articles. And it consists mainly in
removable tackle or devices to be applied temporarily above the lamp and adapted
to lower and raise the lamp, and it consists further in certain details of construction
whereby the said tackle or devices are adapted to engage with the lamp and
remove it from its permanent support and replace it thereon.
In the case of an electric lamp the frame is constructed much as usual of side
rods united by top and bottom cross bars to the former of which the carbon
regulating mechanism is attached. This lamp frame is hung from a fixed support
by elongated eyes at the upper ends of its side rods hooking onto hooks at the
lower ends of two corresponding side rods pendent rigidly from a plate fixed to
the ceiling or other overhead support.
The tackle for lowering and raising the lamp consists of cords rove through
pulleys carried by a cross bar the cross bar or the pulleys themselves being for the
purpose of lowering and raising the lamp, hung on to hooks fixed above the lamp
between the pendent rods of the permanent support to which position the cross
bar or the pulleys is or are elevated by means of a long arm or pole whereon the
same is or are temporarily placed for the purpose. The cords are provided at one
end with rings and the elongated eyes on the lamp frame by which it is suspended

page_text: from the hooks of the permanent support are formed with downwardly projecting
lateral prongs with which the rings of the tackle cords are made to engage for the
purpose of removing the lamp from its permanent support, lowering it and raising
it again. The other ends of the two cords are united and they may be passed
through a double clamp having eccentric jaws one for each cord by which the
cords can be easily united at any desired point of their length according to the
distance the lamp is to be lowered. Or instead of a clamp they may be simply
knotted together to limit the descent of the lamp.
If the pulleys are hung directly on the hooks, they are attached to rings and
are elevated to position by a long arm or pole having a curved wire cross-head on
which the pulleys are hung by their rings and whence they are transferred to the
hooks, the crosshead having hooked ends by which the rings of the cords are
pulled down and engaged on the prongs of the lamp frame. If the pulleys are
hung up together with the cross har the latter is made removable from the long
arm or rod to which it is attached in the following way. A two prong fork is
fixed on the end of the rod, one prong being long and flat and the other short and
bent outwardly at the end to form a hook for pulling down the rings of the tackle
cords and engaging them with the lamp frame. Between the prongs of the fork
there is a tapered pintle which enters an aperture in the crossbar the latter being
embraced by the prongs at either side and so held steady on the end of the pole
or long arm from which however it readily detaches itself when it is hung on the
hooks above the lamp
The crossbar in this case may be adapted to serve as a winder for the cords
when not in use