Rubber Manufacturers.
Year: 1888

page_text: Date of Application, 19th Sept.; 1888
Complete Specification Left, 26th Oct., 1888
Complete Specification Accepted, 30th Nov., 188
A communication to me from abroad by LA SOCIÉTÉ J. AND J. SCHOENFELD FRÈRES,
of 68, Faubourg St. Martin, Paris, France, India Rubber Manufacturers.
I, JOHN CLAYTON MEWBURN, of 169 Fleet Street in the City of London, Fellow of
the Institute of Patent Agents, do hereby declare the nature of this invention to be
as follows:
or seam.
This invention has reference to the manufacture of india rubber teats without joint
Hitherto the process of making them has consisted in repeatedly dipping a
glass or other mould having the shape of a teat into a solution of india rubber. The
precess is long inasmuch as the india-rubber solution takes a certain time to dry and
from 15 to 20 successive layers or coats of the liquid caoutchouc are necessary in
order to obtain the thickness of a teat of medium strength. These operations not
only occupy much time but also cause a great loss in the solvent employed such
as benzine.
The object of the present invention is to considerably shorten the work. As a
matter of fact, the first layers of liquid caoutchouc are the most difficult to put
on, the solution having a certain difficulty in adhering to the mould. I replace
these first layers by a teat consisting of a sheet of thin non vulcanized caoutchouc.
The solution adheres quickly to this sheet and 8 to 10 dippings at most are
necessary to obtain a thickness of rubber which 2 dippings under the old process
would not produce whilst a very important economy in time, material and labor is
effected. The teat, after the operations before described, is finished and vulcanized
in the usual way.
TL 10th day of Santamber 1888

page_text: A communication from abroad by LA SOCIÉTÉ J. AND J. SCHOENFELD FRÈRES, of
68, Faubourg St. Martin, Paris, France, India Rubber Manufacturers.
I JOHN CLAYTON MEWBURN of 169 Fleet Street in the City of London, Fellow
of the Institute of Patent Agents 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 has reference to the manufacture of india rubber teats without
joint or seam. Hitherto the process of making them has been to repeatedly dip
a glass or other mould of a shape corresponding with that of the teat to be
produced into a solution of india rubber. The process is long inasmuch as the
india rubber solution takes a certain time to dry and from 15 to 20 successive
layers or coats of the liquid caoutchouc are necessary in order to obtain the thickness
of a teat of medium strength. These operations not only occupy much time, but
also cause a great loss in the solvent employed such as benzine.
The object of the present invention is to considerably shorten the work. As a
matter of fact the first coats or layers of liquid caoutchouc are the most difficult to
put on, the solution having a certain difficulty in adhering to the mould, I replace
these first coats by a sheet of thin non-vulcanized caoutchouc. The solution
adheres quickly to this sheet and 8 to 10 dippings at most are necessary to obtain
a thickness of rubber which twenty dippings under the old process would not
produce whilst a very important economy in time, material, and labor is effected.
The teat after the operations before described is finished and vulcanized in the
usual way.
The form of the teats will vary according to the purpose for which they are
intended, whether for feeding bottles, breast exhausters, or such instruments as
clyster pipes and catheters.
The mode of manufacture is illustrated in Figures 1 and 2, which represent a
mould a, over which a sheet of thin non-vulcanized caoutchouc 6 has been stretched
and joined. In the section Figure 2 the sheet or foundation is shown as sensibly
increased in thickness by the addition of successive coats c obtained by dippings in
the caoutchouc solution. Figures 3 to 8 represent finished seamless teats of various
forms made according to this invention. Those shown in Figures 3 and 4 are adapted for
feeding bottles; that shown in Figures 5 and 6 for a clyster pipe, or cannula, and
that shown in Figures 7 and 8 for a catheter.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me and in what manner the same is to be performed
I declare that what I claim is :-
The mode or process hereinbefore described of manufacturing seamless india
rubber teats.
Dated thin ofth
COL1000