Improvements in Apparatus for Diffusing or Distributing Medicated and other Powders.
Year: 1890

page_text: Date of Application, 7th Nov., 1890
Complete Specification Left, 9th Dec., 1890-Accepted, 27th Dec., 1890
TRUVISIONAL SPECIFICATION.
Improvements in Apparatus for Diffusing or Distributing Medicated
and other Powders.
We JETHRO Foor and ROBERT JETHRO FOOT both of 32 Cantlower Road
St. Pancras in the County of London Engineers do hereby declare the nature of this
invention to be as follows:-
Our invention relates to that class of apparatus comprising a compressible ball
having a nozzle which is used for diffusing or distributing medicated and other
powders.
The nozzles of such apparatus are generally provided with a disc or diaphragm of
gauze or perforated material.
The object of our invention is to provide improved means for securing such discs
or diaphragm whereby we are enabled to produce nozzles more cheaply than
heretofore.
According to our invention the inner end of the nozzle is hollowed out or recessed
and the disc or diaphragm is held therein by means of a spring ring which clamps
the material of which the diaphragm is composed between itself and the walls of the
recess thereby holding it firmly.
Dated the 7th day of November 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Diffusing or Distributing Medicated
and other Powders.
We, JETHRO FOOT, and ROBERT JETHRO FOOT, both of 32, Cantlower Road,
St. Pancras, in the County of London, Engineers, 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 :-
Our invention relates to the well known class of apparatus which is used for
diffusing or distributing medicated and other powders and which comprises a
compressible ball having a nozzle.
The nozzle of such apparatus is generally provided with a disc or diaphragm of
gauze or perforated material.
The object of our invention is to provide improved means for securing such discs
or diaphragms whereby we are enabled to produce nozzles more cheaply than
heretofore.
According to our invention the inner end of the nozzle is hollowed out or recessed
and the disc or diaphragm is held therein by means of a cut ring which, when sprung
into the recess, clamps the material of which the diaphragm is composed between
itself and the walls of the recess, thereby holding it firmly.
To enable our invention to be fully understood we will describe the same with
reference to the accompanying drawing, in which :-
Figure is an elevation partly in section of our improved powder diffuser, which
we propose to call "The Electrobole."
Figure 2 is a section on the line x x of Figure 1 looking in the direction of the
arrow:
Figure 3 is a view of the cut spring ring we employ for fixing the perforated disc
or diaphragm.
Poins Edl

page_text: a is the compressible ball which, as usual, is made of india-rubber, b is the nozzle
of suitable material such as wood or vulcanite which is formed with a groove c so
that when it is introduced into the usual hole in the said ball, the india-rubber will
spring into the said groove c so as to hold the nozzle in position. This method of
fixing allows of the nozzle being easily removed for the purpose of charging the ball.
d is the recess at the lower or inner end of the nozzle, e is the disc or diaphragm
of muslin, gauze or other suitable reticulated or perforated material, and ƒ the cut
ring sprung into the recess d to retain the said disc or diaphragm therein.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we wish it understood
that we are aware of Patents No. 1305 of 1858 Nos. 5430, 7583 and 16256 of 1887
and No. 17220 of 1889, and declare that what we claim is :-
The manufacture and use of the improved apparatus for diffusing or distributing
medicated and other powders, hereinbefore described and illustrated in the accom-
panying drawing.
11
9th day of December 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.