Year: 1887

page_text: Date of Application, 23rd Dec., 1887
Complete Left, 16th Apr., 1888
Complete Accepted, 18th May, 1888
I, GEORGE EDWARD DEHANY, of 31 Claud Road, Townsend Lane, West Derby,
Liverpool, in the County of Lancaster, Contractor, do hereby declare the nature of
this invention to be as follows:-
This invention has reference to a simple and inexpensive device applied to a paraffin
lamp for the purpose of extinguishing the flame in an automatic manner should the
lamp be upset or thrown.
For this purpose I provide a ferrule or tube that encircles and is able to slide freely
lengthwise of the projecting upper portion of the wick tube.
Such ferrules or tubes can be made of various sizes and forms to suit different
burners; they may be rounded off at their upper parts so as to shorten and spread
the flame after the manner of a gas flame produced with an ordinary burner.
The upper edge of the ferrule may be about level or even with the upper end of the
wick tube, or burner, so that should the lamp be overturned or thrown the ferrule will
slide, or drop over the wick tube or burner and encircle the exposed wick, and
extinguish the flame (if any). I so form my ferrules that they cannot pass through
the slits in the burner cones or domes and so be lost, and that assuming a ferrule to
have moved from any cause so as to project as above set forth beyond the wick tube
it will return to its normal position when the lamp is again set upright.
Ferrules according to my invention may be applied in some lamps arranged for
duplicate wicks or circular or curved wicks instead of the ordinary flat wick mostly
in use in common household lamps where the greatest amount of danger arises from
carelessness.
It is to be understood that the shape of the ferrule, and the material of which it is
made will depend upon the classes of lamps to which they are applied.
W. LLOYD WISE,
Per F. J. Brougham.

page_text: I GEORGE EDWARD DEHANY, of 31 Claud Road, Townsend Lane, West Derby,
Liverpool, in the County of Lancaster, Contractor, do hereby declare the nature of
this invention, to be as follows:-
This invention has reference to a simple and inexpensive device applied to a paraffin
lamp for the purpose of extinguishing the flame in an automatic manner should the
lamp be upset or thrown.
For this purpose I provide a ferrule or tube that encircles and is able to slide freely
lengthwise of the projecting upper portion of the wick tube.
Such ferrules or tubes can be made of various sizes and forms to suit different
burners; they may be rounded off at their upper parts so as to shorten and spread the
flame after the manner of a gas flame produced with an ordinary burner.
The upper edge of the ferrule may be about level or even with the upper end of
the wick tube or burner, so that should the lamp be overturned or thrown the ferrule
will slide, or drop over the wick tube, or burner and encircle the exposed wick, and
extinguish the flame (if any).
I so form my ferrules that they cannot pass through the slits in the burner cones
or domes and so be lost, and that assuming a ferrule to have moved from any cause
so as to project as above set forth beyond the wick tube it will return to its normal
position when the lamp is again set upright.
Ferrules according to my invention may be applied in lamps arranged for duplicate
wicks as well as in the ordinary flat wicks mostly in use in common household lamps
where the greatest amount of danger arises from carelessness.
It is to be understood that the shape of the ferrule, and the material of which it is
made will depend upon the classes of lamps to which they are applied.
Referring to the accompanying sheet of illustrative drawings Fig. 1. represents in
vertical section a burner having a single flat wick of the kind mostly in use with
ordinary paraffin lamps and provided with an extinguishing ferrule according to this
invention. Fig. 2. is a similar section taken at right angles to Fig. 1. Fig. 3. is a
plan or top view with the cone or dome removed shewing the ferrule encircling the
wick tube. Figs. 4. 5. and 6. are similar views to Figs. 1. 2 and 3. shewing the
extinguishing ferrule applied to a different construction of lamp burner. Fig. 7. is a
vertical section shewing two extinguishing ferrules applied to a duplex burner.
Fig. 8. is a vertical section. at right angles to that in Fig. 7. taken on-line 10. 11. of
Fig. 9 which represents a plan or top view, the cone or dome having been removed.
for sake of clearness.
A ferrule or extinguisher tube A is made of such a size to slip freely over and
encircle the wick tube, B. as represented in Figs. 1. to 9. of the drawings. The shape
of the ferrule A. will depend on the shape of the wick tube B. and also that of the
dome C.

page_text: The upper edge of the ferrule may be rounded off as shewn by dotted lines in
Figs. 1. and 4. or be flat as represented in Fig. 8. according to the available space
below the dome, C.
The upper edges may be about level or even with the top of wick tube B. or pre-
ferably a little below, and the edges may be slightly rounded off so as not to obstruct
the free passage of air to the flame.
The sides of the ferrule A are made taper in thickness in order that there may be
sufficient weight to ensure the ferrule sliding lengthwise over the exposed lighted wick
and flame should the lamp be upset.
The length of the ferrule must be such that it cannot drop through the slit in the
dome, C. or off the end of the wick tube B. when overturned.
The ends of the ferrules are so shaped that when they come in contact with the
sides of the dome upon the lamp falling over, they will cause the ferrule to lie
partially across the projecting wick as represented by the dotted lines in Figs. 1.
and 2. thereby more quickly extinguishing the flaine. This sideways movement is
however not absolutely necessary for extinguishing the flame.
There are some classes of burners for narrow flat wicks in which the domes and
wick tubes are very short; in these cases the extinguishing ferrule is made flat on its
upper edge as shewn in Fig. 8. which represents one of the ferrules encircling one
of the wick tubes of a duplex burner.
In applying my invention to a duplex burner a separate ferrule is slipped over
each wick tube, the sides thereof that come between the two wick tubes require to
be made a little thinner so that they may slide independently of each other.
The ferrules may be made of cast iron, common brass, or lead if required, so long
as the hole in the inside is made smooth and large enough to slide freely over the
wick tube; a recess may be left on one or both sides to allow for the turning over
and jointing of some of the common wick tubes.
It will be understood that in the event of a paraffin lamp provided with an
extinguishing ferrule according to this invention falling over, the loosely fitting
ferrule will by gravity slide over the exposed wick and flame and will extinguish the
same automatically and that by again placing the lamp in a vertical position the
ferrule will return to its normal position, thus no mechanism whatever is required
for effectually and automatically extinguishing the lamp. Ferrules according to this
invention are only applicable to lamps which will permit the sliding motion.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that I make no
general claim to a sliding ferrule or extinguisher suitable for all classes of flat wick
burners for paraffin lamps but what I claim is :-
1. An automatic extinguishing tube or ferrule sliding by gravity on, the burner
tube beneath the dome and prevented from leaving the said tube by the dome
substantially as described and shewn and for the purpose specified.
Dated this 27th day of March 1888.
GEORGE EDWARD DEHANY.