Improvements in or applicable to Oil Lamps.
Year: 1893

page_text: Date of Application, 9th June, 1893
Complete Specification Left, 8th Mar., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Oil Lamps.
We, VERE GEORGE WEBB of 64 New Kent Road, in the County of London,
Physician, and CLEMENT BEDWELL, of 5 St. Germain's Road, Forest Hill, in
the County of Kent, Commercial Clerk do hereby declare the nature of this
invention to be as follows:-
This invention relates to improved means for automatically extinguishing oil
lamps in case of their being accidentally overturned, and for automatically setting
the extinguishing arrangement in the position necessary for lighting the lamp. In
carrying out our invention, we use any suitable form of extinguisher to be put in
action by a lever. One end of this lever engages with, or is connected to, the
extinguisher, the other end is fixed to a crank passing through the gallery of the
burner. Beneath the lamp is fixed a second lever, one end of which is connected
by rods or links or their equivalent to the crank. To this second lever we apply
either a spring, elastic band, or weight, or a combination of them, which will on
the lamp being overturned set the mechanism in motion, and at once cause the
extinguisher to put out the flame.
When the lamp is in its normal position, its weight controls the spring or weight,
and the extinguisher is automatically kept clear of the wick or flame.
We provide suitable means for preventing the extinguisher putting out the flame
when the lamp is raised for carrying; but if dropped whilst being moved the
automatic mechanism will be freed and the light extinguished.
When required the extinguisher may be worked by hand without lifting the
lamp.
Din ach do of Tuna 1802
VERE G. WEBB.
. CLEMENT BEDWELL.
COMPLETE SPECIFICATION.
Improvements in or applicable to Oil Lamps.
We VERE GEORGE WEBB of 64 New Kent Road in the County of London
Physician, and CLEMENT BEDWELL of 5 St. Germain's Road Forest Hill in the
County of Surrey Commercial Clerk, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
This invention relates to improved means for automatically extinguishing oil
lamps in case of their being accidentally overturned, and for automatically setting
the extinguishing apparatus in the position necessary for lighting the lamp.
It
In carrying out our invention we use any suitable form of extinguisher, and we
will now specify how to carry out the invention with the ordinary sliding
extinguisher with shutter as used in duplex and single burners with flat wicks.
Fig. 1 shows the elevation of a duplex lamp fitted with our invention.
represents the body of the lamp supported on four, or any convenient number
of metal tubes attached to the base. One of these tubes A passes through body
and base of lamp.

page_text: Fig. 2, shows section of tube A and of base of lamp.
Fig. 3, shows a section of lamp burner (on a larger scale) with extinguishers
closed.
Fig. 4, shows a crank lever CHK with piston rod B hinged to it.
Fig. 5, shows an extinguisher shutter L with extended flap M.
Fig. 6, shows plan of burner with extinguishers open.
We use sliding extinguishers of the usual form, but omit springs; and use
shutters with extended flaps as shown at M Figs. 3, 5, and 6.
We are aware that this extension of flap is not novel, and therefore do not
claim it except in combination with our method of operating.
Through the gallery of the burner we pass a crank lever CH K with arms; one
arm C hinged to piston B lies outside the burner, and one or more arms K, K,
alongside the wick tubes. We have illustrated two such arms one on the outer
side of each wick tube. Figs. 1. 3. 4. 6.
The extinguishers connected by a metal crossbar, N. Fig. 6, are slipped over
the wick tubes, and having no springs fall into position for lighting by their own
weight, the extended flaps being bent at such an angle, that when the shutters are
open the ends of the flaps rest upon the lever arms K K.
The dome is fitted on as usual. The burner is so adjusted to the body of the
lamp that the piston B passes into the open upper end of the tube A, a perforated
tube cap D being fitted to retain it in position. Inside tube A a rod E is fitted,
freely moveable and longer than the tube. Near the base of the lamp a slot G is
cut in tube A, and through it projects a small knob or catch F the use of which is
hereafter described.
Beneath the base of the lamp a metal rod, P, is attached to furnish a fulcrum,
and a lever, O, straight or bent, with a slot near the middle is hinged to it, as
illustrated O, P. One end of this lever is hinged to the rod E, the other end is
free.
This lever may be operated by any known form of spring, or by an elastic
band, or by a weight, or by a combination of them.
We have illustrated in Fig. 2, a coiled spring R attached to the under surface of
the top of the lamp base, and to the lever O between its hinged end and the
fulcrum. The lever O is so fitted that when the lamp is placed on a table or other
support the free end of the lever is pushed up, and the spring is thus controlled by
the weight of the lamp: Directly the lamp is tilted the hinged end of the lever
is raised and the rod E is pushed up, thus pushing up the piston B, which operates
the crank CH, and raises the lever arms K, K; they raise the extinguishers by
the extended flaps and in doing so close the shutters. We have provided the knob
or catch F, passing through the slot G, to enable the lamp to be carried about
alight, the grip of the hand on F preventing the rod E rising.
It is obvious that other forms of spring may be used to raise the rod E, placed
either above the base of the lamp or beneath it.
Fig. 7 shows another form of crank lever, in which the arms K, K, are raised
by depressing the arm C by a rod or cord.
Fig. 8 shows a cheap form of lamp for hanging on a wall. A rectangular piece of
sheet metal forms the back, and base, O; the end of base is hinged to the oil
receiver as shown at T, a spring of any suitable form is placed between the
bottom of the receiver and O'to force them apart; (and O are connected by a
rod or wire, B. E. The body of the lamp is made sufficiently heavy to compress
the spring when hanging or standing on a support.
Fig. 9 shows one method of using a weight instead of a spring to operate the
mechanism; where W is a weight attached to a cord which passes through a
ring X as illustrated. Another method is to hang a weight from the lever O near
its free end.
In hanging lamps we control the spring or weight, by connecting the free end of
the lever to the point of suspension of the lamp by a cord or its equivalent.

page_text: Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. Constructing automatic safety lamps for mineral oils as herein described and
illustrated.
2. The use of a crank lever with one or more arms, in oil lamp burners to work
extinguishers of any suitable form.
3. The use of a crank lever to raise and close sliding extinguishers with shutters,.
by the action of the arm or arms of such lever on the extended flaps of the
shutters as herein described.
1
100
VERE G. WEBB.
CLEMENT BEDWELL.