-GESELLSCHAFT FÜR FEINMECHANIK vormals JETTER & SCHEERER
Year: 1897

page_text: A communication by THE ACTIEN-GESELLSCHAFT FÜR FEINMECHANIK vormals
JETTER & SCHEERER, of Tuttlingen, Wurtemberg, in the Empire of Germany,
Surgical Instrument Makers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster, 118 New Street, Birmingham, in the County of War-
wick, and 322, High Holborn, in the County of Middlesex, Civil Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improvement in chloroform masks, which allows of
the mask being conveniently folded flat in a case, but immediately automatically
Further
to assume a suitable form for use as soon as it is taken out of the case.
the mask may be fitted in the simplest manner with a discharge channel.
Hitherto chloroform masks have all been made in the form of baskets with fixed
or folding loops and are never separately available.
The accompanying drawing shows the improved mask or rather its spring frame
and the discharge channel,
Figure 1 being a side elevation of the mask;
Figure 2 a plan view of the same;
Figure 3 a plan view of the channel, and
Figure 4 an elevation of the channel.
The frame A consists of a spiral, made from one piece of spring wire in the form
of an elliptical spiral enlarging towards its base and shaped at the bottom to form
a handle a. This spiral may be compressed flat to the thickness of the wire, but
will immediately return to its normal position when released. Over this frame is
drawn a cap or cover of fabric or the like.
Where the discharge channel B, Figures 3 and 4 is employed, the Tower spring
part of the wire frame A is sprung into the horse-shoe shaped channel and is
thereby retained on the inner edge of the channel, which at the top is somewhat
flanged or bent over. When a channel is employed, a special cover for the spring
frame is not necessary, but a suitabie fabric, cloth, gauze or the like may be drawn
over the frame and fixed by clamping between the frame and the discharge
channel.
The spring wire frame A may be very cheaply made, and the price of such a
simple and practical mask is very moderate, and this is also specially the case
with the discharge channel.
The main advantage consists, however, in the easy capability of separating

page_text: channel and frame, and also in the fact that the latter can be folded flat and con-
veniently preserved in a case.
Dated this 15th day of January 1897.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.
A communication by THE ACTIEN-GESELLSCHAFT FÜR FEINMECHANIK vormals
JETTER & SCHEERER, of Tuttlingen, Wurtemberg, in the Empire of Germany,
Surgical Instrument Makers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster, 118 New Street, Birmingham in the County of War-
wick and 322, High Holborn, in the County of Middlesex, Civil Engineer, 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:
This invention relates to an improvement in chloroform masks, which allows of
the mask being conveniently folded flat in a case, but immediately automatically
assuming a suitable form for use as soon as it is taken out of the case. Further
the mask may be fitted in the simplest manner with a discharge channel.
Hitherto chloroform masks have all been made in the form of baskets with fixed
or folding loops and are never separately available.
The drawing accompanying the Provisional Specification shows the improved
mask or rather its spring frame and the discharge channel.
Figure 1 being a side elevation of the mask;
Figure 2 a plan view of the same;
Figure 3 a plan view of the channel, and
Figure 4 an elevation of the channel.
The frame A consists of a spiral, made from one piece of spring wire in the form
of an elliptical spiral enlarging towards its base and shaped at the bottom to form
a handle a. This spiral may be compressed flat to the thickness of the wire, but
will immediately return to its normal position when released. Over this frame is
drawn a cap or cover of fabric or the like.
Where the discharge channel B, Figures 3 and 4 is employed, the lower spring
part of the wire frame A is sprung into the horse-shoe shaped channel and is
thereby retained on the inner edge of the channel, which at the top is somewhat
flanged or bent over. When a channel is employed, a special cover for the spring
frame is not necessary, but a suitable fabric, cloth, gauze or the like may be drawn
over the frame and fixed by clamping between the frame and the discharge
channel.
The spring wire frame A may be very cheaply made, and the price of such a
simple and practical mask is very moderate, and this is also specially the case
with the discharge channel.
The main advantage consists, however, in the easy capability of separating
channel and frame, and also in the fact that the latter can be folded flat and con-
veniently preserved in a case.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. A chloroform mask characterised by a spring wire frame which is covered by
a cap or cover, and made in the form of a preferably elliptical spiral enlarging
towards its base and shaped at the bottom to form a handle, said mask being
adapted to be folded flat under pressure but to again immediately assume its
raised cap shape on the pressure being removed, substantially as hereinbefore
described and shown.
2. In a chloroform mask, such as described, the arrangement of a horse-shoe
shaped channel into which the lower ring of the spring frame is sprung and
retained by the projecting inner edge of the channel securely on said channel
but in such a way as to be readily releasable, substantially as described.
WM. P. THOMPSON & Co.,
Agents.
WM. P. THOMPSON & Co.,
Agents.