Improvements in Petroleum and other Lamps.
Year: 1887

page_text: Date of Application, 22nd Feb., 1887.
Specification Accepted, 22nd Mar., 1887.
Improvements in Petroleum and other Lamps.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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:-
"
"
My invention has relation to that class of lamp known as central draught lamps, in
which a circular wick is employed, and in which there is usually provided a device
known as a doflector or "spreader" the purpose of which is to deflect a current
of hot air ascending from the middle of the tube over the wick and to spread
the flame.
My improvements have for their object the novel construction of a lamp having a
detachable plate forming the top of the lamp and supporting the burner secured
thereto and having a wick raising mechanism which comprises a vertical rod passing
through the detachable top and a clamping band embracing the wick as hereinafter
described.
In the accompanying drawing the figure is a vertical central section of a lamp
having the detachable fount cover and wick raising mechanism.
A represents the fount of the lamp and B a burner thereon, said burner being of
the Argand type. The bowl A has a central draught tube A' which passes upwardly
or extends into the burner when the latter is in position on said bowl. D represents
the annular wick, which is encircled by a band E. Said band E has a projection or
lug F, to which is rigidly secured a vertical rod G which passes through and has
liberty of vertical movement in a tube or boss h on the under side of the top H of the
lamp fount. By moving the rod G the wick D may be raised and lowered.
The top H is in a separate piece from the fount A and the outer tube of the burner B
is firmly secured to said top.
The top H may be fitted to the bowl or reservoir A by any suitable form of joint,
but I prefer to use a screw joint, for the reason that it is one which is readily
produced, and can be made tight and is easily opened without the exertion of much

page_text: force. If desired the detachable top may be secured by a joint directly to the upper
edge of the lamp fount, but I prefer to employ, as a medium of connection and as
serving the purpose hereinafter mentioned, a throat, which throat is fitted in and
soldered or otherwise firmly secured to the upper edge of said fount. The lower
section of said throat is threaded as shown at i, to engage, with the threaded flange /
of the detachable top H, the portion of the throat above the joint being flared so as to
form a wall, which will surround the opening in the top of the lamp and prevent
any oil which may pass through or sweat down from the burner from running over the
outside of the fount or reservoir.
To fill the lamp the top is unscrewed or detached and sufficiently raised to permit
the observation of the interior of the bowl or reservoir, so that danger of overflow in
filling may be readily averted. The wicking of the lamp is also accomplished by
unscrewing and detaching the top. The wick is then passed down through the burner,
its lower end entering the band, after which the wick and band are slipped down over
the draught tube and the top screwed on the fount. The top being detachable as
described and lifted off the bowl, the wicking is readily effected, as the lower end of
the wick, the band which encircles it and the upper end of the draught tube are all
visible and accessible. These advantages are due to the detachability of the top of
the fount.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, as communicated to me by my foreign
correspondent, I declare that what I claim is :-
In a lamp having a central draught tube, the combination with the side wall and
bottom of the fount, of a detachable plato forming the top of said fount, a burner
secured to said detachable top, and wick-raising mechanism comprising a vortical rod
which passes through said top and a clamping band to which said band is fastened,
said top being of greater diameter than the largest diameter of said burner and said
wick raising mechanism being movable with the detachable top and wholly apart from
the burner, substantially as shown and described.
Dated this 22nd day of February 1887.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.