IMPROVEMENTS IN BOXES FOR CONTAINING AND EXPELLING POWDERS
Year: 1884

page_text: I PARKIN SLADE LANGLEY of Liddell Street Hull in the County of York
Drysalter do hereby declare the nature of my said invention for IMPROVEMENTS
IN BOXES FOR CONTAINING AND EXPELLING POWDERS, to bo as follows:—
My invention relates to the construction of boxes for containing and for expelling
insect powders and others powders, the object being to make such boxes of a
convenient and compact form, and economical to manufacture.
I make the said boxes of any suitable material, but preferably of cardboard and
suitable tough paper, in the following manner.
I prefer to make the box of a cylindrical form closed at one end and provided
with a lid for the other end, the body of the box being made of a tough quality of
thin paper.
A spring, preferably of a double volute shape (but a (simple spiral or helical
spring will answer the purpose) is placed inside the box, so as to act against the
two ends and retain the box at its full extent.
When the box is filled with the powder the lid is put on, and permanently
secured by glue, paste, or other means.
A hole is made in the end of the box and when not in use is plugged up, so that
the powder cannot be scattered, or fall out.
To use the box, the plug is withdrawn and the box compressed, by pressure on
each end which forces out the powder in a puff or jet, when the pressure is with-
drawn the action of the spring expands the box to its full extent, when the
compression may be repeated, resembling the action of a pair of circular bellows.
The shape of the box may be varied to some extent, that is instead of being
cylindrical it may be made square, octagon or other similar shapes in cross section.
The flexible body being made of thin paper, or similar yielding substance, can
be compressed, or doubled up, and expanded a sufficient number of times without
damage.
The end of the box may be made of wood, tin or stronger substances than card-
board if desired.
AAL

page_text: Fig. 5, 1B &
Fig. 4, is a section of Fig. 2.
I prefer to make the box of a cylindrical shape, the contral part C, being
preferably of a tough quility of paper. The bottom is permanently closed by the
cardboard lid or end A, the top opening being afterwards closed by a similar lid B.
In the interior of the body of the box a spring D is placed so that it will retain 2
the box open to its greatest capacity and full extent, when it is at rest or
thereabouts.
The spring may be a plain spiral or coil as shown, or it may be a double volute
or other shape as found most convenient.
A small hole at E is made in the bottom rim of the box communicating with the i
interior, through which the powder is ejected.
When the box is charged with powder the lid B, is put in position and secured
by an adhesive label or otherwise, the hole E, being closed by means of a small
plug F.
When the box is to be used, the plug is withdrawn and the box compressed
by the operator; this action forces powder out of the hole E in a small puff or
jet; when the pressure of the fingers is withdrawn, the box expands by the re
-action of the spring, and may be again compressed with a similar result, as often
as required.
I do not bind myself to the shape as shown, of the box, as it may be either
round, square, octagon or other like shape in cross section; nor to the material of
which the boxes may be made, as these may be varied to suit the demand, but
I find that a tough and flexible paper is very suitable for the purpose,

page_text: 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
(1.) The manufacture of compressible and re expanding boxes, for expelling
powders, substantially as hereinbefore described and illustrated.
(2.) The manufacture of tubular shaped boxes, provided with an internal coiled
spring, and compressible in the direction of. its vertical axis, for the purpose specified,
and substantially as herein described and illustrated.