An Improved Apparatus for use in Producing Local Anaesthesia.
Year: 1897

page_text: Date of Application, 7th Dec., 1897
716
4000
PROVISIONAL SPECIFICATION.
An Improved Apparatus for use in Producing Local Anaesthesia.
I, EMILE GUILMETH, of 8, Rue du Centre, Neuilly s/Seine, in the Republic of
France, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My invention has for its object an apparatus for use in producing local
anaesthesia and is characterised by the combination of arrangements forming
adjutages of various forms serving to produce obturation and atomization with a
receptacle containing an anesthetic liquid which receptacle is itself lodged in a
second chamber capable of enclosing an intermediate body enabling the necessary
propulsion to be given to the anaesthetic product, which propulsion results from
the temperature communicated to this product by the intermediate body.
an
"
My apparatus may be employed for effecting local anesthesia with any known
anaesthetics whatever may be their boiling point, the intermediate body alone
being varied according to the said boiling point, but as the apparatus has been
especially designed for effecting local anesthesia by means of chloride of ethyl, I
have, in order to simplify the description, given the name ethyleur" (ethyl
ejector) to the one, of the two parts, which forms the obturating and pulverising
it constitutes
anaesthetic
adjutage because
apparatus enabling the
principles of chloride of ethyl to be synthesised and increased, and the name
"ethyleuse" (ethyl container) to the receptacle containing the anaesthetic liquid
said receptacle forming a tight box with double walls forming a receptacle con-
taining pure chloride of ethyl. These two distinct parts may be connected one
with another when necessary. The part called the 'ethyleur" may for that
matter assume various forms and be successively combined with a series of "ethy-
leuse boxes which are replaced when empty.
"
In order to allow of the invention being better understood I will now refer to
the accompanying drawings in which:-
Figure 1 is a longitudinal sectional elevation of a complete apparatus, ethyleur
and ethyleuse, on an enlarged scale. The reservoir or ethyleuse being broken on
account of the dimensions of the drawing and the lower arc of a circle showing the
transverse section of the internal recipient.
Figures 2, 3 and 4 are longitudinal sectional elevations of three modifications
of the obturating and atomizing apparatus or ethyleur."
Figures 5 and 6 are views in longitudinal sectional elevation, and elevation
respectively of a regulating apparatus intended to regulate the discharge of the
chloride of ethyl.
Figure 7 a sectional elevation of a box serving to produce the obturation of the
discharge passage.
Figure 8 a view in longitudinal section of a device serving to allow of the
transfer of liquid from one receptacle to another.
Figures 9 to 13 are views in elevation and sectional elevation of various patterns
of ethylating apparatuses arranged on the same principle.

page_text: Figure 1 is a modified form of the reservoir or
"
ethyleuse" which may be
employed when the apparatus has to be held in an inclined position.
The same reference letters and numbers represent the same parts in the various
figures.
The part of the apparatus which forms the tight reservoir containing chloride
of ethyl is formed of a vessel with double walls having an elongated straight
parallelopedic form, and this is the outer casing, the recipient proper, which may
have to resist some pressure, is cylindrical. The external reservoir 1 is intended
to receive oil, water, or other suitable liquid capable of imparting a minimum
degree of heat of 30 degrees Centigrade. This reservoir communicates with the
outside by means of a pipe at the bottom which may be closed by a screw cap or
stopper 2. The internal reservoir 3 intended to receive the chloride of ethyl must
be able to resist a certain pressure and is therefore cylindrical, it also communi-
cates with the outside by means of a pipe 4 screwed internally in order to receive
a screw stopper 5 forming a tight joint with the pipe 4 and bored internally with
a passage 6, this stopper 5 bears on a shoulder or seat 7 arranged in the pipe 4
as shown in the drawing. This pipe 4 has a solid metal washer 8 cemented or
soldered on the shoulder 7, said washer being intended to form a tight wall for
stoppering the vessel containing the chloride of ethyl. The screw stopper 5 is
also threaded internally and a block 9 is engaged in this thread to which block a
rotary movement may be imparted by means of arms 10 which are inserted therein.
This piece 9 which is bored internally with a small central passage 14 serving for
the escape of the gas is provided at its lower part with a pointed or punch arrange-
ment 15 which serves for perforating the plate 8 and which is also traversed by
the central passage 14. An hexagonal piece 11 is screwed on its upper end and
has the action of a nut by acting on which with a key the desired tightening may
be effected. On this hexagonal piece is screwed another piece 12 having the form
of a hollow rod having on its exterior a screw thread engaging with a piece 13
which forms the outer casing of the apparatus mounted with a tight joint on the
part 12. The interior of the piece 12 is divided into two parts by a perforated
partition 16 the part above this partition forming a chamber 17 in which is
placed a small spring 18 intended to exert a pressure on a stopper 19 which under
the action of this pressure bears on an indiarubber washer 20 held by a support 21
formed by an enlargement of the internal chamber 17. This washer 20 has a
central opening and is held by a screw stopper 22 which has a prolongation 23.
The stopper and its prolongation have both a central opening 24 corresponding
to the opening in the indiarubber washer and forming a guide for the narrow
cr thin part 25 of a screwed rod 26 which passes through a joint formed by a
double nut 27, 28, between which is a washer 29 which is compressed by means
of the nut 28 in order to obtain a tight joint. The compression of this washer
is obtained by turning by means of key a hexagon 30, which is then set by
means of screws 31 engaging in a series of recesses 32 formed in the upper sur-
face of the nut 27. The screwed rod 26, 25 terminates at its upper end in a squared
part 33 cn which a key 34 is placed which may be operated by means of arms 35
and 36, the latter of which is removable and has a threaded part 37 to pass through
the squared part 33 of the rod and secure the key on the said squared end.
The part 13 forming the external casing has a branch or side projection 38
having a double screw thread 39, 40. The screw thread 39 serves for engaging
with or receiving a protective cap 41, whilst the screw thread 40 is intended to
receive an adjutage or nozzle 42 having a very small opening 43 by which the
vapourised chloride of ethyl escapes.
In order that the rod 26 may not be inadvertently turned whereby the chloride
of ethyl would be allowed to escape to the outside, I arrange on the squared part 33
of the rod a second opening 45 similar to the opening 44 and lower than it into
which the thin prolongation 37 of the rod 36 may be inserted. This opening
forms a safety means of locking the key 34 on the nut 28.
When the operator
has in fact finished using the apparatus he pushes up the rod 33 to produce a

page_text: closing and then unscrews the rod 36 and places it in the position 45 which
corresponds to the locking hereinbefore described, the result of which is that the
apparatus can no longer be opened inadvertently.
The working is as follows: All being in position and the plate 8 which forms
the closing piece of the "ethyleuse" (ethyl container) having been perforated by
the punch 15 which has been pushed down by a rotary movement given to the
part 9 I communicate to the rod 25, 26, 33 a downward or descending motion by
means of the key 34. By this motion the stopper 19 pressed against the india-
rubber washer 20 by the spring 18, is moved from said washer, the result of which
is that the ethyl vapour rising by the passage 14 flows round the stopper 19, which
moves freely in the chamber 17 and from thence, owing to the vacuum existing
around the rod 25, passes into the chamber 46 and from thence escapes to the
outside by means of the passage 47. When it is desired to arrest the discharge of
the vapour, it is sufficient to push up the rod 25, 26, 23, and then the spring 18
and especially the pressure of the vapour will internally act on the stopper 19
and press it again strongly on the washer 20.
The apparatus shown in Figure 2 is of the same kind but much simpler. I
will not again describe the similar parts hearing the same reference numerals.
The compound rod 25, 26, 33, is here replaced by a single rod 48 operated in
the manner hereinbefore described and having simply a conical point 49 forming
the necessary joint by being pressed on a seat of similar form.
In the apparatus shown in Figure 3 the closing is obtained by means of an
arrangement of double points 52, 53 connected with one another by means of
a rod 25-26 the closing being produced by raising the rod 25, 26, 33 that is to
say in this form of construction the pressure of the liquid assists the closing.
The other parts remain the same.
In the apparatus shown in Figure 4 the jet issues at the top instead of laterally.
The closing is produced by means of a spindle 50 opening or closing a passage 14
at will. The apparatus is in this case carried by an enlarged part 51 on which
the parts 39, 40, 41, 42, 43 are mounted, the said parts resembling those herein-
before described.
Each of these apparatuses may as I have particularly specified be arranged in-
discriminately on an "
ethyleuse," or ethyl containing box which is replaced
when empty. These boxes intended for a special purpose for which alone they are
to be employed may (in order to afford further guarantees) be checked by a mark
or stamp applied by the inventor or owner himself.
"
Figures 5 and 6 show as stated views in longitudinal sectional elevation and
elevation respectively of an apparatus which I call a regulator" for enabling
the discharge of chloride of ethyl to be regulated.
This apparatus comprises two parts A and B, the latter B serving to establish
communication between the internal passage of the apparatus and the receptacle
("ethyleuse") containing the chloride of ethyl, the former A constituting a
pointed valve which closes sharply, provided with a little key or closing device not
shown in the drawing which is placed on the squared part a in order to turn
same. The part B which replaces the punch 15 of Figure 1, serves for perforating
or driving in the closing diaphragm producing the obturation of the ethyl con-
tainer, by the action of screwing the double screw thread into the tube of the
ethyl container ("ethylense"). This regulator may simply assume the form
shown in Figure 5, that is to say comprise solely a box A in which is the valve
or, as shown in Figure 6 it may also have a cross bar T forming a handle allowing
more power to be exerted for producing a better tightening of the regulator on
the ethyl container ("ethyleuse").
The regulator hereinbefore described is completed by a third part C (Figure 5)
forming a support for the apparatus when the operator holds it in his hand in
order to make use of it. This support comprises a screw thread d in which the
screwed part D of the part previously described engages, and a passage c com-
municating with a nozzle E on which latter any suitable instrument may be

page_text: attached, and finally a pointed valve A similar to the tap A hereinbefore indi-
cated and which I will now more completely describe.
These taps A and A comprise as is shown in the drawings a first chamber 61
screw threaded internally into which a threaded enlargement 62 of the rod 63
of the valve point may be screwed. The ohamber 61 is succeeded by another
chamber 64 in which the packing 65 for producing a tight joint is placed. This
packing 65 is composed of asbestos fibre or other suitable material held between
washers 66 and 67 the whole being compressed by means of a screw stopper 68
which serves to compress the packing. The rod 63 of the punch or point has at
its end a squared part 63' on which a disc or handle 69 for operating the rod is
mounted and held by means of a nut 70.
The obturator box shown in Figure 7 comprises a threaded rod 71 forming
the punch. This rod revolves in a packing placed in a chamber 12 at the
bottom of which there is a washer 73 of lead or soft metal on which the packing
proper 74 formed of asbestos fibres is rammed and compressed by means of a
nut 75. The rod 71 is revolved by means of a handle or button 76.
The double point arrangement shown in Figure 8 comprises a box 77 having
a part 78 which is threaded externally in order to penetrate one of the receptacles,
and the said box 77 is also threaded internally in order to receive the double
punch. The box 77 is closed by means, of a screw stopper 79 forming internally
the seat of one of these points. The double punch movable in the box 77 is
formed of a hollow mass 80 threaded externally to allow of its being screwed in
the box 77 and terminating at one end in a point 81 which may bear into a
tube or passage 82, and at the other end by a truncated conical part 83 which may
bear into the passage of the screw stopper 79. The piece 80, 81, 83, which is
hollow may receive a movement of rotation by means of arms 84 and terminates
by a screwed part 85 penetrating into the other receptacle which is to be placed
in communication with the first one. When the point 81 is pressed on its seat 82
it produces a tight joint, when it is open there is communication from one vessel
to the other by the passage in the piece 80, 81, 83, and the escapes which might
take place by the screw thread are stopped by the part 83 which forms a perfect
stopper. In order to prevent the penetration of dust a cap 86 may be placed over
the stopper 79.
Figure 9 is a front elevation of a rectilinear apparatus capable of being screwed
sharply and strongly into the tube of the chloride of ethyl container so as to per-
forate the diaphragm producing the obturation. The apparatus comprises a block
closing key, an atomizer or sprayer and a cap or hood.
Figure 10 is a sectional elevation of en axial apparatus with pulveriser
and cap arranged conformably with the indications of Figure 5. In order that
the closing may be complete, the block must be strongly screwed which is
obtained by turning the fastening key with the finger thus causing a rotary move-
ment of the reservoir placed in the upper part.
Figure 11 represents a lever apparatus with block, atomizer and cap. In order
that the joint may be quite tight the threaded shank operating the punch must be
harply screwed round.
Figure 12 is a rectilinear apparatus with closing key, stopper, block,
atomizing needle, and protection and reserve tube supporting the sprayer and cap.
The apparatus may be manipulated with one hand like the preceding ones but
with more precision.
Figure 13 is a rectilinear apparatus with regulator, block, atomizing needle,
protection and reserve tube supporting the sprayer and the cap. The advantages
of this pattern are lightness and great precision whilst being able to be mini-
1. with one hand.

page_text: An Improved Apparatus for use in Producing Local Anesthesia.
I, EMILE GUILMETI, of 8, Rue du Centre, Neuilly s/ Seine, in the Republic of
France, Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention has for its object an apparatus for use in producing local
anaesthesia and is characterised by the combination of arrangements forming
nozzles or ajutages of various forms serving to produce a tight closing and atomiza-
tion or spraying with a receptacle containing an anesthetic liquid which receptacle
is itself lodged in a second chamber capable of enclosing an intermediate body
enabling the necessary propulsion to be given to the anaesthetic product, said pro-
pulsion resulting from the temperature communicated to this product by the
intermediate body, which forms a liquid jacket, and which is varied according to
the anesthetic liquid employed. For instance in the case of chloride of ethyl, a
liquid jacket of oil, water, or other liquid capable of giving a minimum tempera-
ture of 30° Centigrade is employed as intermediate body.
My apparatus may be employed for effecting local anaesthesia with any known
anaesthetics whatever may be their boiling point, the intermediate body alone
being varied according to the said boiling point, but as the apparatus has been
especially designed for effecting local anesthesia by means of chloride of ethyl, I
have, in order to simplify the description, given the name "ethyleur" (ethyl
ejector) to the one, of the two parts, which forms the tight-closing and spraying
nozzle or ajutage because it constitutes an apparatus enabling the anaesthetic
principles of chloride of ethyl to be synthesised and increased; and the name
ethyleuse" (ethyl container) to the receptacle containing the anaesthetic liquid
said receptacle forming a tight box with double walls forming a receptacle con-
taining pure chloride of ethyl. These two distinct parts may be connected one
with another when necessary. The part called the "ethyleur" may for that
matter assume various forms and be successively combined with a series of "ethy-
leuse" boxes which are replaced when empty.
In order to allow of the invention being better understood I will now refer to
the drawings accompanying the Provisional Specification, in which:-
Figure 1 is a langitudinal sectional elevation of a complete apparatus, ethyleur
and ethyleuse, on an enlarged scale. The reservoir or ethyleuse being broken on
account of the dimensions of the drawing and the lower arc of a circle showing the
transverse section of the internal recipient.
Figures 2, 3 and 4 are longitudinal sectional elevations of three modifications
of the tight closing and atomizing or spraying device or "ethyleur."
Figures 5 and are views in longitudinal sectional elevation, and elevation
respectively of a regulating apparatus intended to regulate the discharge of the
chloride of ethyl.
Figure 7 a sectional elevation of a box serving to produce the tight closing of
the discharge passage.
Figure 8 a view in longitudinal section of a device serving to allow of the
transfer of liquid from one receptacle to another.
Figures 9 to 13 are views in elevation and sectional elevation of various
patterns of ethylating apparatuses arranged on the same principle.
Figure 14 is a modified form of the reservoir or
employed when the apparatus has to be held in an inclined position.
66
ethyleuse" which may be
The same reference letters and numbers represent the same parts in the various
figures.

page_text: The part of the apparatus which forms the tight reservoir containing chloride
of ethyl is formed of a vessel with double walls having the form of an elongated
parallelopipedon, and this is the outer casing; the recipient proper, which may
have to resist some pressure, is cylindrical. The external reservoir 1 is intended
to receive oil, water, or other suitable liquid capable of imparting a minimum
degree of heat of 30 degrees Centigrade. This reservoir ccmmunicates with the
outside by means of a pipe at the bottom which may be closed by a screw cap or
stopper 2. The internal reservoir 3 intended to receive the chloride of ethyl must
be able to resist a certain pressure and is therefore cylindrical, it also communi-
cates with the cutside by means of a pipe 4 screwed internally in order to receive
a screw stopper 5 forming a tight joint with the pipe 4 and bored internally with
a passage 6, this stopper 5 bears on a shoulder or seat 7 arranged in the pipe 4
as shown in the drawing. This pipe 4 has a solid metal washer 8 cemented or
soldered on the shoulder 7, said washer being intended to form a tight wall for
stoppering the vessel containing the chloride of ethyl. The screw stopper 5 is
also threaded internally and a block 9 is engaged in this thread to which block a
rotary movement may be imparted by means of arms 10 which are inserted therein.
This piece 9 which is bored internally with a small central passage 14 serving for
the escape of the gas is provided at its lower part with a pointed or punch arrange-
ment 15 which serves for perforating the plate 8 and which is also traversed by
the central passage 14. An hexagonal piece 11 is screwed on its upper end and
has the action of a nut by acting on which with a key the desired tightening may
be effected. On this hexagonal piece is screwed another piece 12 having the form
of a hollow rod having on its exterior a screw thread engaging with a piece 13
which forms the outer casing of the apparatus mounted with a tight joint on the
part 12.
The interior of the piece 12 is divided into two parts by a perforated
partition 16 the part above this partition forming a chamber 17 in which is
placed a small spring 18 intended to exert a pressure on a stopper 19 which under
the action of this pressure bears on an indiarubber washer 20 held by a support 21
formed by an enlargement of the internal chamber 17. This washer 20 has a
central opening and is held by a screw stopper 22 which has a prolongation 23.
The stopper and its prolongation have both a central opening 24 corresponding
to the opening in the indiarubber washer and forming a guide for the narrow
cr thin part 25 of a screwed rod 26 which passes through a joint formed by a
double nut 27, 28, between which is a washer 29 which is compressed by means
of the nut 28 in order to obtain a tight joint. The compression of this washer
is obtained by turning by means of a key a hexagon 80, which is then set by
means of screws 31 engaging in a series of recesi 32 formed in the upper sur-
face of the nut 27. The screwed red 26, 25 terminats at its upper end in a squared
part 33 cn which a key 34 is placed which may be operated by means of aims 85
and 36, the latter of which is removable and has a threaded part 37 to pass through
the squared part 33 of the rod and secure the key on the said squared end.
The part 13 forming the external casing has a branch or side projection 38
having a double screw thread 39, 40. The screw thread 39 serves for engaging
with or receiving a protective cap 41, whilst the screw thread 40 is intended to
receive an ajutage or nozzle 42 having a very small opening 43 by which the
vapourised chloride of ethyl escapes.
In order that the rod 26 may not be inadvertently turned whereby the chloride
of ethyl would be allowed to escape to the outside, I arrange on the squared part 33
of the rod a second opening 45 similar to the opening 44 and lower than it into
which the thin prolongation 37 of the rod 36 may be inserted. This opening
forms a safety means of locking the key 31 on the nut 28. When the op. recor
has in test finished using the apparatus he pushes up the rod 33 to prdner a
clo ing and then unscrews the rod 36 and plait in the position 5 which
corresponds to the locking herein fose described, the result of which is that the
apparatus can no longer be opened inadvertently.
The working is as follows:-All being in position and the plate 8 which forms
the closing piece of the "ethyleuse" (ethyl container) having been perforated by

page_text: the punch 15 which has been pushed down by a rotary movement given to the
part 9, I communicate to the rod 25, 26, 33 a downward or descending motion by
means of the key 34. By this motion the stopper 19 pressed against the india-
rubber washer 20 by the spring 18, is moved from said washer, the result of which
is that the ethyl vapour rising by the passage 14 flows round the stopper 19, which
moves freely in the chamber 17 and from thence, owing to the space existing
around the rod 25, passes into the chamber 46 and from thence escapes to the
outside by means of the passage 47. When it is desired to arrest the discharge of
the vapour, it is sufficient to push up the rod 25, 26, 33 and then the spring 18
and especially the pressure of the vapour will internally act on the stopper 19
and press it again strongly on the washer 20.
"
It will thus be seen that the "ethyleuse" is tightly closed by the plate 8 until
the "ethyleur" is attached, whereupon the plate 8 is perforated as described and
the tight closing of the ethyleuse is then effected by the "ethyleur." Upon
the ethyl vapour being allowed to escape as described the spraying or atomization
is produced by the cooling action of the sudden expansion of the vapour as it
emerges into the open air which causes a portion of the vapour to be liquefied into
drops.
The apparatus shown in Figure 2 is of the same kind but much simpler. I
will not again describe the similar parts bearing the same reference numerals.
The compound rod 25, 26, 33 is here replaced by a single rod 48 operated in
the manner herein before described and having simply a conical point 49 forming
the necessary joint by being pressed on a seat of similar form.
In the apparatus shown in Figure 3 the closing is obtained by means of an
arrangement of two conical valves 52, 53 connected with one another by means of
a rod 25-26 the closing being produced by raising the rod 25, 26, 33 that is to
say in this form of construction the pressure of the liquid assists the closing.
The other parts remain the same.
In the apparatus shown in Figure 4 the jet issues at the top instead of laterally.
The closing is produced by means of a spindle 50 opening or closing a passage 14
at will. The apparatus is in this case carried by an enlarged part 51 on which
the parts 39, 40, 42, 43 are mounted, the said parts resembling those herein-
before described.
"
Each of these apparatuses may as I have particularly specified be arranged in-
discriminately on an ethyleuse," or ethyl containing box which is replaced
when empty. These boxes intended for a special purpose for which alone they are
to be employed may (in order to afford further guarantees) be checked by a mark
or stamp applied by the inventer or owner himself.
66
Figures 5 and 6 show as stated views in longitudinal sectional elevation and
elevation respectively of an apparatus which I call a regulator for enabling
the discharge of chloride of ethyl to be regulated.
This apparatus comprises two parts A and B, the latter B serving to establish
communication between the internal passage of the apparatus and the receptacle
("ethyleuse") containing the chloride of ethyl, the former A. constituting a
pointed valve which closes sharply, provided with a little key or closing device not
shown in the drawing which is placed on the squared part in order to turn
same. The part B which replaces the punch 15 of Figure 1 serves for perforating
or driving in the closing diaphragm producing the tight closing of the ethyl con-
tainer, by the action of screwing the double screw thread into the tube of the
ethyl container ("ethyleuse"). This regulator may simply assume the form
shown in Figure 5, that is to say, comprise solely a box A in which is the valve
or, as shown in Figure 6 it may also have a cross bar T forming a handle allowing
more power to be exerted for producing a better tightening of the regulator on
the ethyl container (ethyleuse").
The regulator herein before described is completed by a third part C (Figure 5)
forming a support for the apparatus when the operator holds it in his hand in
order to make use of it. This support comprises a screw thread d in which the

page_text: screwed part D of the part previously described engages, and a passage c com-
uunicating with a nozzle E on which latter any suitable instrument may be
attached, and finally a pointed valve A¹ similar to the tap A hereinbefore indi-
cated and which I will now more completely describe.
These taps A and A¹ comprise as is shown in the drawings a first chamber 61
screw threaded internally into which a threaded enlargement 62 of the rod 63
of the valve point may be screwed. The chamber 61 is succeeded by another
chamber 64 in which the packing 65 for producing a tight joint is placed. This
parking 65 is composed of asbestos fibre or other suitable material held between
washers 66 and 67 the whole being compressed by means of a screw stopper 68
which serves to compress the packing. The rod 63 of the valve or point has at
its end a squared part 631 on which a disc or handle 69 for operating the rod is
mounted and held by means of a nut 70.
The tight closing box shown in Figure 7 comprises a threaded rod 71 forming
the pointed valve. This rod revolves in a packing placed in a chamber 72 at the
bottom of which there is a washer 73 of lead or soft metal on which the packing
proper 74 formed of asbestos fibres is rammed and compressed by means of a
nut 75. The rod 71 is revolved by means of a handle or button 76.
The double conical valve arrangement shown in Figure 8 comprises a box 77 having
a part 78 which is threaded externally in order to penetrate one of the receptacles,
and the said box 77 is also threaded internally in order to receive the double valve.
The box 77 is closed by means of a screw stopper 79 forming internally a seat for
one of these conical valve faces 83. The double valve movable in the box 77 is
formed of a hollow mass 80 threaded externally to allow of its being screwed in
the box 77 and terminating at one end in a cone or point 81 which may bear into a
tube or passage 82, and at the other end by a truncated conical part 83 which may
bear into the passage of the screw stopper 79. The piece 80, 81, 83 which is
hollow may receive a movement of rotation by means of arms 84 and is terminated
by a screwed part 85 penetrating into the other receptacle which is to be placed
in communication with the first one. When the point 81 is pressed on its seat 82
it produces a tight joint, when it is open there is communication from one vessel
to the other by the passage in the piece 80, 81, 83 and the escapes which might
take place by the screw thread are stopped by the part 83 which forms a perfect
stopper. In order to prevent the penetration of dust a cap 86 may be placed over
the stopper 79.
Figure 9 is a front elevation of a rectilinear apparatus capable of being screwed
sharply and strongly into the tube of the chloride of ethyl container so as to per-
forate the diaphragm producing the tight closing. The apparatus comprises a
block closing key, an atomizer or sprayer and a cap or hood.
Figure 10 is a sectional elevation of an axial apparatus with atomizer or sprayer
and cap arranged conformably with the indications of Figure 5. In order that
the closing may be complete, the block must be strongly screwed which is
obtained by turning the fastening key with the finger thus causing a rotary move-
ment of the reservoir placed in the upper part.
Figure 11 represents a lever apparatus with block, atomiser or sprayer and
cap cr hood.
In order that the joint may be quite tight the threaded shank
operating the punch must be sharply screwed round.
Figure 12 is a rectilinear apparatus with closing key, stopper, block,
atomiser or sprayer, and protection and reserve tube supporting the sprayer and
The apparatus may be manipulated with one hand like the preceding ones
but with more precision.
cup.
Figure 13 is à recilinear apparatus with regulator, bleck, atomiser or sprayer,
and protection and reserve tube supporting the sprayer and the cap or hood. The
advartans of this pattern are lightness and great precision whilst being able to
be manipulated with one hand.
Figure 14 is an apparatus adapted to be employed in an inclined or even re-
versed position to those of the apparatuses shown in Figures 1, 2, 3, 4, 9, 10, 11, 12.

page_text: and 13. The apparatus in Figure 14 is shown in the position of use, as are the
apparatuses shown in Figures 9 to 13, whilst those in Figures 1 to 4 are reversed
in the drawings. In order that the apparatus may be able to work in this
position the discharge tube T of the liquid dips down to the end of the container
to prevent the gas escaping. I is an escape pipe with a stop valve for the escape
of gas when refilling the reservoir. A similar apparatus for use with other pro-
ducts has for that matter been described in my Patent No. 14681 of the year 1893.
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:-
An apparatus for use in producing local anesthesia, characterised by the com-
bination of arrangements forming ajutages or nozzles of various forms adapted to
produce a tight closing and atomization or spraying in conjunction with a double
walled reservoir containing the anaesthetic liquid, said reservoir having a liquid
jacket formed by the insertion between the double walls of intermediate bodies
such as oil water or other liquid having a minimum temperature suited to the
anaesthetic substance employed, and which allows the said substance to be given
the necessary propulsion resulting from the temperature which is communicated
to it by these intermediate bodies; substantially as hereinbefore described and
shown as an example in the accompanying drawings.
Dated this 2nd day of September 1898
W. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.