An Improved Disinfecting Process by Means of Methylaldehyde, or Polymeric Methylaldehydes and Method of employing same.
Year: 1897

page_text: An Improved Disinfecting Process by Means of Methylaldehyde, or
Polymeric Methylaldehydes, and Method of employing same.
We, GEORG KRELL, of Husten, in the Province of Westphalia, German Empire,
Manager, and MAX ELB, of 21, Luttichaustrasse, Dresden, in the Kingdom of
Saxony, German Empire, Manager, do hereby declare the nature of this inven-
tion to be as follows:-
Our invention relates to an improved disinfecting process by means of the
volatile products generated by the reduction to gas, of, "oxide of methyl," the
principal feature of our improvements being the employment of the polymeric
products in powder, or in the form of compressed lumps, and bringing same in
direct contact with a glowing mass, already in reaction, as for instance carbon
or carbonaceous matter impregnated with nitrates, in which the condition must
be fulfilled, that the temperature of the heat source shall not reach the tem-
perature limit, at which the methylaldehyde gases combine with the oxygen of
the air, i.e. burn or ignite to a flame.
Our improved process can be carried out in such manner, that the mass or
substances containing methylaldehyde, as for instance tablets of the trioxy-
methylene are placed, in immediate contact with the glowing mass and the mass
then brought to reaction. This can be effected by imparting to the glowing mass
any convenient shape suitable for the reception of the tablets, said tablets being
subsequently placed in the correspondingly shaped form of the glowing mass.
It is desirable to give the walls or edges of the glowing mass body, a suitable
height, so that the said walls or edges reach or extend over the top of the tablets
in order to retain and economise heat and also the amount of the glowing mass
consumed.
process
is
1
In general an economy of the glowing mass and hereby an increased
efficiency of the
or
attained by surrounding encompassing
the methylaldehyde body with the glowing mass. Such result would be
brought about for instance by giving the glowing mass the form or shape of a
candle or the like, the wick or core of which would consist of compressed para-
formaldehyde, and the body proper of the candle or the like being formed from
the glowing mass subsequently to be ignited.
Furthermore the distribution of the same into the air can be accelerated by
employing as a heat source any mass, which developes gases to a greater extent
and to give an instance, in the case of saltpetrous carbon and the like, this result
can be obtained by a further addition of carbon, or, by an addition of substances
which directly emit or give off gases during their decomposition.
The methylaldehyde volatilised in this manner spreads very quickly in the air,
and. as indicated in the preamble of the specification, the simultaneous formation

page_text: of gas acts advantageously in effecting the more rapid distribution of the methyl-
aldehyde in the air to be disinfected.
Dated this 30th day of November 1897.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicants.
An Improved Disinfecting Process by Means of Methylaldehyde, or
Polymeric Methylaldehydes, and Method of employing same,
We, GEORG KRELL, of Husten, in the Province of Westphalia, German Empire,
Manager, and MAX ELB, of 21, Luttichaustrasse, of Dresden, in the Kingdom of
Saxony, German Empire, Manager, 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:―
Our invention relates to an improved disinfecting process by means of the
volatile products generated by the reduction to gas, of "methylaldehyde," the
principal feature of our improvements being the employment of the polymeric
products in powder, or in the form of compressed lumps, and bringing same in
direct contact with a glimmering mass, already in reaction, as for instance carbon
or carbonaceous matter impregnated with nitrates, in which the condition must
be fulfilled, that the temperature of the heat source shall not reach the temperature
limit, at which the methylaldehyde gases combine with the oxygen of the air,
i.e. burn or ignite to a flame.
Our improved process can be carried out in such manner, that the mass or
substances containing methylaldehyde, as for instance tablets of the trioxy-
methylene are placed in immediate contact with the glimmering mass and the
mass then brought to reaction. This can be effected by imparting to the glimmer-
ing mass any convenient shape suitable for the reception of the tablets, said
tablets being subsequently placed in the correspondingly shaped mould of the
glimmering mass.
It is desirable to give the walls or edges of the glimmering mass body, a suitable
height, so that the said walls or edges reach or extend over the top of the tablets
in order to retain and economise heat and also to effect an economy of the amount
of the glimmering mass consumed.
In general this economy of the glimmering mass and hereby an increased
efficiency of the process is attained by entirely surrounding or encompassing the
methylaldehyde body with the glimmering mass. Such result would be brought
about for instance by giving the glimmering mass the form or shape of a candle
or the like, the wick or core of which would consist of compressed paraform-
aldehyde, and the body proper of the candle or the like, being formed from the
glimmering mass subsequently to be ignited.
Furthermore the distribution of the same into the air can be accelerated by
employing as a heat source any mass, which developes gases to a greater extent
and to give an instance, in the case of carbon impregnated with nitrates and the
like, this result can be obtained by a further addition of carbon, or, by an
addition of substances which directly give off gases during their decomposition.
The methylaldehyde volatilised in this manner spreads very quickly in the air,
and, as indicated in the preamble of the specification, the simultaneous formation
of gas acts advantageously in effecting the more rapid distribution of the methyl-
aldehyde in the air to be disinfected.

page_text: 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 :-
:-
The process of disinfecting, consisting in subjecting the methaldehyde or
polymeric methaldehydes to the heat of a glimmering mass of a low temperature
volatilizing thereby the aldehyde without igniting the same, whereby the gases
emanating from the glimmering mass simultaneously effect the distribution of
the aldehyde-vapours, substantially as described.
Dated this 26th of August 1898.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicants.