Improvements in or relating to Magnesium Flash Lights.
Year: 1891

page_text: Date of Application, 30th Apr., 1891-Accepted, 16th Jan., 1892
COMPLETE SPECIFICATION.
Improvements in or relating to Magnesium Flash Lights.
I, REGINALD HADDAN of the firm of Herbert & Co. Patent Agents of
18 Buckingham Street, Strand W.C., in the County of London Civil Engineer, do
hereby declare the nature of this invention, a communication to me from abroad
by. Friedrich Hermann Felix Engel of Graskeller 21, Hamburg in the Empire of
Germany Civil Engineer 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 lamps and apparatus connected therewith whereby a
flash-light may be produced by blowing powdered magnesium into or through the
flame of the lamp. The object of the improvements is to provide a simple apparatus
or means by which the necessary quantity of magnesium powder may be transferred
from a reservoir thereof to the apparatus by which it is to be blown into or through
the flame so that the lamp may be safely and quickly recharged for another flash
light.
The invention and the manner of carrying the same into practice are illustrated
in the accompanying drawings, in which
Fig. 1 is a longitudinal section through the blowing tube and the reservoir of
the improved flash light lamp,
Fig. 2 is a plan view thereof and Figs. 3 and 4 are cross sections showing
respectively Fig. 3 the reservoir in its lower position and the lamp charged, and
Fig. 4 the reservoir in its upper position in the act of charging the lamp.
R is the blowing tube being provided with the nozzle or nozzles m for attach-
ment of a rubber tube or tubes and ball or other suitable air blowing device and
having the cavities ii i to receive the charge of magnesium powder, these cavities
being in communication by the ways with the interior of the tube R so that the
air issuing from the tube through these ways x x blows the magnesium powder onto
the flame of the lamp.
The novelty consists in fitting the magnesium powder reservoir P so that it may
be turned upon the said tube R, either by direct movement of the hand or through
a toothed wheels and sector v. The reservoir P usually occupies the lower
position shown in Fig. 3, but when turned into its upper position as in Fig. 4 the
powder therein falls upon the upper surface of the tube R and fills the cavities i ii.
When the reservoir is again turned downwards the cavities ii i are left exactly
filled and the superfluous powder is wiped from the tube R by the lateral strips of
packing u fixed along the sides of the reservoir and moving closely on the surface
of the tube R, so that an exact charge is thus left in the cavities i ii ready to be
blown into the flame of the lamp when a current of air is sent at the desired
moment into the tube R.
The construction of the lamp forms no part of this invention, in the construction
shown a a a are three constantly burning flames for lighting gas issuing from the
gas pipe B when the gas is turned on, the gas flame being directed over the
cavities iii so that the magnesium may be blown upward through the gas
flame.
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 what I
claim is ;-
In magnesium flash light apparatus.
1
viting for receiving

page_text: said cavities for filling the same by gravity and thereafter to be moved from over
said cavities whereby the latter are left charged.
2) The combination with a blowing tube having recessed cavities for receiving
a charge of powder to be blown, of a movable reservoir adapted to be revolved
on the said tube so that it may be moved into an upward position for filling
the said cavities and thereafter moved below the tube substantially as set forth
whereby the cavities are left charged.
Dated this 30th day of Anvil 1801
HERBERT & Co.,
Agents to Applicant.