Improvements relating to Safety Lanterns or Lamps.
Year: 1889

page_text: Date of Application, 16th May, 1889
Complete Specification Left. 17th Feb., 1890-Accepted, 22nd Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements relating to Safety Lanterns or Lamps.
1, WILHELM AUGUST FRIEDRICH BUTENSCHÖN, of 11 Graskeller Hautburg, in the
Empire of Germany, Merchant do hereby declare the nature of this invention to be
as follows:-`
This invention relates to portable lanterns especially adapted for that class of oil
lamps, which are by the aid of a weight or weighted lever automatically extinguished
when being lifted from their support or turned sideways by accident.
The said invention consists in the employment of a yielding support for the said
weight or weighted lever in the lantern in such a manner, that when suspending
the lantern or placing the same upon a plain horizontal surface the lamp will not
be extinguished whilo on the contrary it will be extinguished without fail, in case
the lantern is turned aside, or accidentally falls, or when the lamp is taken off
the lantern.
For this reason the weight or weighted lever of the lamp is supported by a disc
or table carried by a cross piece to which is connected a pair of rods extending
The said handle is
through the whole lantern and forming the handle of the same.
guided by the casing of the lantern, within the foot of which, springs, bearing against
the bottom of the lantern and the said cross piece, tend to press the said disc or table
from the weighted lever thereby allowing the weight or weighted lever of the lamp
to follow the action of the said disc or table if not otherwise prevented.
The tension of said springs is however so adjusted, that while the lantern is
suspended by its handle or when placed on a flat surface the said springs are actuated
by the weight of the lantern, so that the cross piece will be pressed in level with the
lower edge of the lantern. In this position the disc or table supporting the weight
or weighted lever of the lamp is elevated and the extinguisher thereby receded from
the wick of the lamp so that the latter cannot be extinguished.
Dated this 16th day of May 1889.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Safety Lanterns or Lamps.
I, WILHELM AUGUST FRIEDRICH BUTENSCHÖN of 11 Graskeller, Hamburg, Germany,
Merchant, do hereby declare the nature of this invention and in what manner the
samo is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to portable lanterns especially adapted for that class of oil-
lamps, which are by the aid of a weight or weighted lever automatically extinguished
when being lifted from their support or turned sideways by accident.
The said invention consists in the employment of a yielding support for the said
weight or weighted lever in the lantern in such a manner that, when suspending
the lantern or placing the same upon a plain horizontal surface the lamp will not
be extinguished, while on the contrary it will be extinguished without fail in case
the lantern is turned aside or accidentally falls or when the lamp is taken off the
lantern.
Referring to the accompanying drawings
Figure 1 is a central vertical section of my improved safety lantern with an oil
lamp provided with an extinguishing device of known construction and of the class
hafiza mentioned.

page_text: Figure 2 is a similar view but showing the lantern turned sideways to show the
effect of the mechanism.
Figure 3 is a vertical cross section of my improved safety lantern taken in a plane
at right angles to Figure 1, the oil lamp being partly in section-to better illustrate the
position of the actuating parts.
The weight or weighted lever a, b of the lamp is supported by a disc or table i
carried by a cross piece to which is connected a pair of rods ll extending through
the whole lantern and forming the handle m of the same. The said handle is guided
by the casing of the lantern, within the foot of which springs n, n' bearing against the
bottom p of the lantern and the said cross piece k tend to press the said disc or table i
from the weighted lever ab thereby allowing the weight or weighted lever of the
lamp to follow the action of the said disc or table i if not otherwise prevented.
The tension of said springs n n¹ is however so adjusted, that while the lantern
is suspended by its handle m or, when placed on a flat surface (see Figures 1 and 3)
the said springs n n¹ are actuated by the weight of the lantern, so that the cross
piece will be pressed in level with the lower edge of the lantern. In this position
the disc or table i supporting the weight or weighted lever ab of the lamp is elevated
and the extinguisher d, e, f, within the burner-cap t thereby receded under the action
of the rod c from the mouth of the wick tube h of the lamp so that the flame cannot
be extinguished.
b
Although I have only described and illustrated such lamps in which the lever a,
or rod c is operated by a weight, I wish it clearly understood that my improved
lantern may be used also in combination with any such lamps in which the lever or
rod is weighted by a spring or springs.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
First. In combination with a lantern for self extinguishing oil lamps a yielding
disc or table i actuated by the handle m through the medium of the rods and the
combining cross-piece k substantially as and for the purpose, set forth.
Second. In combination with a lantern having a yielding disc or table carried by
a cross-piece to which is connected the handle of the lantern by means of rods l,
the springs n n acting on said table or rods substantially as and for the purpose
set forth.
Dated this 17th day of February 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.