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Патент USA US2121034

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June '21, 1938..’
, M. HAUSMANN
2,121,034
APPARATUS FOR GENERATING OXYGEN, ESPECIALLY FOR BREATHING PURPOSES
Filed Oct.‘ 8, 1956
2 sheds-Shea; 1
11219.2
Max Hauumann
In van for
By His‘ Afforneys '
June 21, 1938.
‘M. HAUSMANN
2,121,034
APPARATujs FOR GENERATING OXYGEN, ESPECIALLY FOR BREATHING PURPOSES
'
‘
'
Filed Oct. s, 1956
2 sheets-sheet 2
Maw Hausmann'
In ven for
By His Afforneys
'
2,121,034
Patented June 21, 1938
PATENT‘ OFFICE
‘ UNITED: STATES
2,121,034
APPARATUS FOR- GENERAT‘ING OXYGEN,
ESPECIALLY FOR BREATHING PURPOSES
Max Hausmann, Berlin-Zehlendorf-Mitte, Ger
many, assignor to I. G. Farbenindustrie Ak
tiengesellschaft, Frankfort-on-the-Main, Ger
many
Application October 8, .1936, Serial No. 104,585
In Germany November 27, 1935
4 Claims.
(Cl. 23-281)
This invention relates to apparatus for gener
ating oxygen, especially for breathing purposes.
Extended use is made for‘arti?cial respiration
in cases of gas poisoning of so-called oxygen res
5. cue apparatus,in which the oxygen is adminis
tered from pressure ?asks which are ?tted with
reducing valves. This method of supplying oxy
gen is very costly, and is also inconvenient in
practice for the reason that the pressure ?asks
are heavy and require constant regulation.
In contradistinction thereto the present inven
tion relates to an oxygen rescue apparatus in
which oxygen is supplied by per se known com
. positions generating oxygen by the thermal de
15. composition‘ of chemical substances, more par
ticularly chlorates and perchlorates. Said sub
stances can either be accommodated in the form
of a moulded body in a generator '?ask designed
for repeated use, or’ be ?tted in a closed con
20 tainerwhich is discarded after a single use only,
the oxygen’ generating body being held therein
?rm and secure against shook by means of _ a
heat insulating and ?ltering sheathingenclosing
it on all sides in the manner of a cartridge. De
vices of this kind are described, for example, in
British speci?cation No. 451,170.
When the oxygen-liberating substance and its
container: is simply placed in the case therefor
there is always the inherent danger that me
301chanical in?uences‘ (a shock or the like) may
bring about unintentional ignition of the oxygen‘
liberating substance. There is also the possi
bility of the case being closed up after the rescue
work without removing the still highly heated and
35; in‘ many cases not completely consumed oxygen
liberating substance therefrom. The accumula
tion of heat ensuing from such procedure, may
lead to damage to the whole apparatus and par
ticularly to the respiratory bag. The need thus
an, arises of designing an apparatus that is com
pletely proof against such contingencies and the
consequent disadvantages.
The present invention aims at protecting oxy-'
gen rescue apparatus of the foregoing kind
45.- against improper handling by ?tting the con
tainer for the oxygen-generating substance, to
gether with the ignition cap connected» thereto
in a housing or box in such a way that uninten
tional i. e. premature ignition is made'impossible,
50. and that after the ignition device has been oper
ated the apparatus is prevented from closing by a
locking device until the oxygen-generating sub
stance or the container holding same is removed.
This can be effected for example, by disposing
55;» the container receiving vor-containing the oxygen
generating substance, in the housing case in such
a manner that in its inoperative position it lies
flat on the ?oor of the box with its ignition'cap
immediately adjacent the wall of‘ the housing'and
thus protected from being unintentionally actu Cl.
ated, from which for the purpose of operation it
is raised by means of a lever into an inclined
positionv in which said ignition cap is freely‘ ac
cessible. In order moreover to prevent the box
from being closed when novlonger required, with
out previous removal therefrom of‘ the consumed
mass, or the container containing same, a look
ing device is provided which is brought into the
engaging position either on actuating the igni
tion device or on lifting the container into the 15
inclined position, and which inzthis position pre
vents the box from being closed, and which can
only be released after the oxygen-generating sub
stance or its container is removed, thus enabling
the case to be closed. The frame holding the N) 0
container may itself be adapted toserve- as the
locking device, being held locked in the raised
position until the consumed mass or the container
is removed from the box.
'
In order more clearly to understand the inven
tion, reference is made to the accompanying
drawings, which illustrate diagrammatically and
by way of example, one embodiment of apparatus
in ‘accordance therewith and in which:
Figs. 1 and’ 2 are elevations of the apparatus
in the open and closed positions;
I
Fig. 3 is a plan of said apparatus;
Fig. 4 is a detail on a larger scale.
In these drawings it has been assumed that the
oxygen-liberating substance is snugly disposed in
a ‘container in the manner of a cartridge for
use on one occasion only, and‘ that two such
cartridges are provided which act on a common
oxygen feed pipe. This arrangement enables
oxygen to be supplied either from one container ,
only or from both containers simultaneously, and
thus to adapt the quantity of oxygen to the mini
mum and maximum requirements of the patient.
Atthe same time said arrangement enables an
exhausted container to be replaced by a fresh one 4 5
when necessary, without completely interrupting
the supply of oxygen.
'
Referring particularly to Figs. 1-3, ‘a base
plate 0 is pivoted on the hinge m, in a protective
housing or box (1 provided with a suitable lid ‘(not 50
shown), said plate being provided at both ends
with rests for receiving the cylindrical containers
at supplying the oxygen. At the top end of each
container there is provided‘ an ignition knob‘ by
which lies‘close to the-wall» of the housing-when‘
2
2,121,084
the plate is in the lowered position, while its lower
ends are provided with pipes f and g for leading
away the evolved oxygenv to a main pipe k with
connection piece Zby way of the connection cocks
h and 2' respectively.
e is a notch catch ?tted
lowered into a position substantially flush and
in parallel with the bottom of said housing or
box, and, upon opening of said lid, to be raised
into an inclined- position, a cartridge detachably
secured to said base-plate containing an oxygen~
generatingsubstance and provided with an igni
tion device, said cartridge being so disposed on
between the two containers and provided with
a spring, said catch locking the base-plate in
the raised position when said plate is raised into said base-plate that said ignition device is ac
the working position with‘the aid of the handle ‘ cessible for operation only when said base-plate
10 ‘it.
Connection pipes f and g are made of metal,
in order to avoid their being damaged by the’
heat, and in accordance with the invention they
serve at the same time as levers to open or close
the valves h and 2‘ respectively. Springs f1 and
15 91 respectively cause an automatic closing of the
valves 71, and i when the screw coupling is dis
connected.
When the apparatus is put into use the lid of
the box is ?rst opened and the base plate to
20 gether with the containers lying thereon is raised
by means of the handle n until the catch 6‘ springs
into locking position (see Fig. 1). The ignition
caps, hitherto protected from being actuated by
is in inclined position, and means, operating on 10
said ignition device being actuated, for prevent
ing the closing of said lid upon said housing or
box as long as said cartridge is in position on said
base-plate.
2. Apparatus for generating oxygen, compris
15
ing a housing or box provided with a lid, a base
plate pivotally secured near one of its ends to
said housing or box so as to be adapted to be
lowered into a position substantially ?ush and
in parallel with the bottom of said housing or
box, and, upon opening of said lid to be raised
into an inclined position, a cartridge detachably
secured to said base-plate containing an oxygen
the wall of the box, are thus exposed. After ac
tuating the ignition device a uniform current of
oxygen is evolved, the dissipation of the heat
generating substance and provided with an ig
nition device, said cartridge being disposed on 25
thus developed being facilitated by the inclined
base-plate being lowered, said ignition device is
position of the container 0..
The oxygen passes
through the pipes 1‘ and/or 9 and through the
valves h and 2' respectively into the main pipe
is, and is conducted through the connection I to
the place of consumption.
Referring to Figs. 3 and 4, p is a catch-plate
pivotally secured to the mounting plate provided
with a counter spring and having noses 101, p2, 213,
said catch-plate being held in the cooked posi
tion by means of a spring bolt, provided with a
nose p7 engaging the nose p; as long as the ig
nition pin, which on being actuated, acts on the
spring bolt by means of a bell-crank lever, is
said base-plate in such a manner that, on the
adjacent to and protected from being actuated
by, one of the walls of said housing or container,
while being freely accessible on the base-plate
when in an inclined position, and means, operat
ing on said ignition device being actuated, for
preventing the closing of said lid upon said hensing or box as long as said cartridge is in posi
tion on said base-plate.
35
3. Apparatus for generating oxygencomprising
a housing provided with a cover, a base plate
pivotally mounted near one of its ends in said
housing whereby said base plate may be raised
from an inoperative position within and substan
not operated. If this locking be released by the
operation of the ignition cap I), the catch-plate
an inclined or operative position, a cartridge con
will ?rst turn under the action of the spring
taining oxygen-generating ‘material detachably
tension only until the nose pa snaps into a notch
secured to said base plate, an ignition device on
said cartridge at the end farthest from the base
45 catch p4 which in turn is provided with a nose
29s and a spring 295. This causes the nose in to
tiallyv ?ush with the bottomrof said housing to
plate pivot, said cartridge being so arranged on 45
protrude over the wall d of the box and thus
said base plate that said ignition device is ac
prevents the base plate being lowered to the floor
cessible for operation only when the base plate
is in operative position, means for locking said
base plate in operative position comprising a
three-nosed catch plate pivotally mounted on
said base plate, a spring attached to said base
of the box once the ignition device has been
operated. The arrangement is such that the
spring tension applied to the catch plate 11 is
prevented from rotating it any further by the
nose p2 resting against the wall of the container
a’ as long as the latter remains in the box. Not
until the container is removed can the spring
rotate the catch-plate any further, i. e. to such
an extent that the nose p3 presses back the nose
p5 and therefore also the notch catch m. In
this position a cam mounted on the springlps
60 secures the notch-catch, so that the catch-plate
p can now be returned to its original position
until the nose m is in position behind the nose
of the spring bolt p7. The simultaneous move
ment of the nose p1 exerts tension on the spring
65 ZJ‘s, so that the cam mounted on said spring re
leases the notch catch in, the latter returning to
its original position. In the meantime however,
the nose 101 has returned to its original position,
thus enabling the base-plate to be lowered and
70 therefore the case to be closed.
I claim:
1. Apparatus for generating oxygen, compris
ing a housing or box provided with a lid, a base
plate pivotally secured near one of its ends to
75. said housing or box so as to be adapted to be
40
plate and said catch plate tending to'force the
latter into and beyond locking position,'means
for holding said catch plate in a neutral or
cocked position, means actuated by the opera 55
tion of said igniting device for operating said
holding means to cause the same to release the
catch plate thereby allowing the‘ catch plate to
take a locking position'with one of its noses in
engagement with the housing and another of its
noses in engagement with the cartridge.
4. Apparatus for generating oxygen comprising
60
a housing provided with a cover, a base plate
pivotally mounted near one of its ends in said
65
housing whereby said base plate may be raised
from an inoperative position within and sub
stantially flush with the bottom of said housing
to an inclined or operative position, a catch for
holding said base plate in operative position, a
cartridge containing oxygen generating material
detachably secured to said base plate, an ignition
device on said cartridge at the end farthest from
said base plate pivot, said cartridge being so arranged on said base plate that said ignition 75“
2,121,034
device is accessible for operation only when the
base plate is in operative position, means for
locking said base plate in operative position
when the ignition device is actuated said lock
ing means comprising a three-nosed catch plate
pivotally mounted on said base plate, a spring
3
ing said notched member forward toward said
catch plate, a notch of said notched member
being so positioned as to receive‘ and hold the
?rst mentioned nose against backward move
ment when the catch plate is in looking posi
tion, a spring arm‘ provided with a cam mounted
attached to said base plate and said catch plate
on said base plate adjacent said notched member,
ignition device and said catch plate‘ for engaging
member in retracted position, removal of said 10
cartridge from said base plate freeing the afore
said third nose thereby permitting said catch
tending to force the latter into and beyond lock- v a second notch in said notched member arranged
ing position, a spring bolt arranged between said - to engage with said cam to hold said notched
one of the noses of said catch plate to thereby
hold the latter in a cooked position, means ac
tuated by the operation of said ignition device for
operating said spring bolt to cause the same to
15 release said nose thereby allowing said vcatch
plate to turn to locking position with a second
nose of said catch plate in engagement with said
housing and the third nose of said catch plate in
engagement with said cartridge, a notched mem
ber pivotally mounted on said bed plate adjacent
said catch plate provided with a spring foriorc
plate to turn so that said ?rst mentioned nose
forces the notched member into retracted po
sition, resetting of the catch plate to cocked posi
tion by turning the same against the spring ten
15
sion effecting a simultaneous release of the
notched member from retracted position by the
aforesaid second nose acting upon the end of said
20
spring arm.
MAX HAUSMAN'N.
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