An Improved Powder Insufflator.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
An Improved Powder Insufflator.
CLARENCE FENTON SLATER 2 Baker Street Portman Square London W.
trading as Slater Bros. Pharmaceutical Accessories Manufacturers do hereby
declare the nature of this invention to be as follows:-
-
In delivering powders with insufflators at present on the market, owing to the
bellows or air generating apparatus being attached to the instrument, the action of
compressing the former, diverts, to an extent the end of the delivery tube, conse-
quently the powder is often diffused over a portion of the surface other than the
affected part; further, the ejection of the powder by compressing the bellows is not
so instantaneous as by my new method.
In order to overcome the difficulties above mentioned I first employ a metal or
other cap which I fix or screw onto the neck of a bottle shaped, preferably, like the
handle of a pistol. I next fit through a hole in said cap, a tube for conducting the
powder to the point of delivery. At a convenient position from said delivery tube
1 fix to the inside of said cap an air conducting tube which extends into the bottle.
Through the side of said cap I fit into, and at a convenient angle to, said wind
conducting tube a second wind conducting tube, the exterior end of which is shaped
to engage with the soft rubber tube of a rubber bellows. In the former of these
two wind conducting tube I insert another small tube which accurately fits its
calibre and is for the purpose of forming a valve to the second wind conducting
tube, this said tube carries a small rod which passes through a perforation in said
cap & this rod I mount on the outside with a small spring & retaining nut.
I next
employ a double rubber bellows, with any of the ordinary valves used, which I fit
on to the exterior end of the tube shaped to receive it. By this means the secondary
bellows can be filled with compressed air from the air generating bellows & released
upon pressing the retaining nut on the rod of the valve causing an instantaneous
ejection of the powder contained in the bottle.
Dated this 5th day of September 1895
CLARENCE FENTON SLATER 2 Baker Street Portman Square London W.
Pharmaceutical Appliances 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 is illustrated in the accompanying drawings, in which.-
Fig. 1 is a sectional view of my powder insufflator.
Fig. 2 is an enlarged section indicating the construction of the air valve.
In delivering powders with insufflators at present on the market, owing to the
bellows, or air generating apparatus being attached to the instrument, the action of
compressing the former diverts, to an extent the end of the delivery tube couse-
quently the powder is often diffused over a portion of the surface other than the

page_text: affected part; further the ejection of the powder, by compressing the bellows is not
so instantaneous as by my new method, it is also necessary, with the usual instruments
to employ both hands to bring about a delivery of powder.
In order to overcome the difficulties indicated above I first employ a metal or
other cap A which I make to fit or screw on to the neck of a bottle B shaped,
preferably, similar to the handle of a pistol.
I next fit through a perferation in said cap a tube C, for conducting the powder
to the point of delivery.
At a convenient position from said delivery tube, & parallel to it, I fix inside said
cap an air-conducting tube D, which engages with a Hixible tube extending into
the bottle.
Through the side of said cap A 1 fit into, and at a convenient angle to said wind
conducting tube D a second wind conducting tube E, the exterior end of which is
shaped to engage with the soft rubber tube of a double bellows, or air-generating
apparatus referred to here-in-after.
In the tube D I insert another small tube, which may be either of even calibre
or coned, as indicated in Fig. 2 at F and perforated at a point f
I next employ a small rod G which passes through a perforation in the cap A
and carries a small plug H (Fig. 2) which I make to acurately fit the small tube F
(Fig. 2) and over the free end of the rod G 1 fit a small spring K which I secure
by a retaining button L. Inext employ a double rubber bellows (or other air
generating apparatus) with the usual valves which I fit onto the free end of the
tube E.
By this means the secondry bellows can be filled with compressed-air from the
air generating bellows & released upon pressing the retaining button L, causing
an instantaneous ejection of the powder contained in the bottle.
Having now particularly described and ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is.
1. In powder insufflators, the employment of a double bellows or other air storing
apparatus.
2. The employment of a double bellows or air storing apparatus & the construc-
tion of the instrument as above described.
3. The general arrangement or construction of powder insufflators, substantially
as here-in-before described & illustrated by the drawings.
Dated this 5th day of June 1896.
C. F. SLATER,