Improvements in Safety Devices for Lamps for Burning Paraffin or similar Oils or Liquids.
Year: 1894

page_text: Date of Application, 27th Oct., 1894-Accepted, 8th Dec., 1894
COMPLETE SPECIFICATION.
Improvements in Safety Devices for Lamps for Burning Paraffin or
similar Oils or Liquids.
We DAVID GRIFFITH Lewis 20 Bailey Street Brynmawr Breconshire Grocer's
Assistant and JOHN DAVIS 24 Bandey Street Brynmawr Miner do hereby declare
the nature of this invention and in what manner the same is to be particularly
described and ascertained in and by the following statement:-
Our invention relates to improvements in safety devices for lamps for burning
paraffin or similar oils, and has for its object to provide means for enabling the
highly inflammable gases generated in the oil-reservoirs of such lamps, to be safely
carried away so as to obviate any risk of explosion through such gases becoming
ignited or through similar well known causes.
And in order that this our said invention may be more readily understood, we
have appended hereto, a sheet of illustrative drawings, wherein :-
Fig. 1. is an elevation of an ordinary oil-burning lamp, with our safety means
applied thereto, one of the latter being shewn partly in section,
Fig. 2. being a sectional view of the safety device, shewn separate, while Fig. 3
an elevational view of the safety device.
Referring to the drawing, a represents a lamp of ordinary construction for
burning paraffin oil or the like, formed integral with or fixed into the oil-
reservoir a' of which lamp are a suitable number of vents 6 communicating with
the interior of such oil-reservoir.
These vents 6 preferably take the form of short upwardly curved tubes or
nipples, closed at their upper ends by screw or other caps b¹ having a number of
perforations b formed in the tops and sides thereof.
These said caps b' are capable of ready removal for the purpose of filling the
oil-reservoir a', or for similar purposes, though if desirable one only of the vents b
may be provided with a removable cap 6', while the other vents may be fashioned
with closed upper ends which of course would be suitably perforated.
We preferably extend the vents b a suitable distance within the interior of the
oil-reservoir a', in an upwardly curved direction, as shewn by b' (Fig. 1.) a portion
of the oil-reservoir a' being removed for convenience in shewing same.
By this means the danger of spilling the paraffin oil or the like contained in the
oil-reservoir, if the lamp, be upset, is greatly obviated.
In this portion of Fig. 1. we have also shewn the vent b as being fixed by means
of rivets c to a flange formed around the opening in the oil-reservoir a' into which
such vent 6 is inserted, though the said vent may be fixed in the oil-reservoir in
any suitable manner, or may be formed integral with same as shewn by the other
vent illustrated in elevation in the same figure.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The safety devices for lamps, consisting in vents having the form of upwardly
curved tubes or nipples communicating with the interior of the oil-reservoir of a
lamp and closed at the outer ends by perforated caps, the inner ends of said nipples
projecting somewhat into the oil-reservoir or being flush with same and formed

page_text: integral with or suitably fixed thereto, substantially as and for the purpose
described, and as illustrated by the accompanying drawings.
Dated this 27th day of October 1894.
HUGHES & YOUNG,
23, Coleman Street, London, E.C., Agents.