IMPROVEMENTS IN THE CONSTRUCTION OF SPRING BOXES FOR POWDERS
Year: 1885

page_text: I, CHARLES MAPLES of Jericho Street Sheffield in the County of York Drysalter
do hereby declare the nature of my said invention for IMPROVEMENTS IN THE
CONSTRUCTION OF SPRING BOXES FOR POWDERS to be as follows:-
My invention refers to improvements in the construction of compressible spring
boxes or receptacles for containing and (when required) expelling powders, such as
insect powders, disinfecting powders and others.
It consists in making the body of the box or receptacle, of the spring itself, the
object being to reduce the cost of manufacture, and at the same time to increase
its durability.
I make the spring from a strip of thin steel or other suitable material of the
required width and length, for example, say one inch wide and four inches long,
and I punch a hole of about one eighth of an inch diameter in the centre of the
said strip, I then bend the strip across the hole to the shape of the letter V, and
harden and temper it, or I may make and form the spring from steel of sufficient
elasticity as not to require hardening.
The spring so made is then covered with paper, calico, or other suitable material
of sufficient toughness to stand being compressed and extended, when the spring is
operated like the action of bellows.
The receptacle may be filled with the powder either during the process of
covering, or afterwards, in the latter case, I should prepare a large hole in one
side of the strip, through which the powder could be poured, and which could be
closed by an adhesive label or otherwise.
1 120 il 100%
ROBT F. DRURY,
Agent for the Applicant.

page_text: I CHARLES MAPLES of Jericho Street Sheffield in the County of York Drysalter
do hereby declare the nature of my invention for IMPROVEMENTS IN THE CON-
STRUCTION OF SPRING BOXES FOR POWDERS and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, that is to say :-
My invention relates to improvements in the construction of compressible spring
boxes or receptacles for containing and expelling powders, such as insect powders,
disinfecting powders and other powders; and in order that the invention may be
clearly understood and defined I annex a sheet of drawings illustrating the
invention.
Fig. 1, is the flat steel with holes.
Fig. 2, the same bent to form a Spring.
Fig. 3, the Complete Compressible box.
: This invention consists in making the body of the box or receptacle act as the
spring to expand the box after it has been compressed by the fingers of the
operator, I thus simplify the construction, and thereby reduce the cost of
manufacture.
I make the spring from a strip of thin material, preferably steel, shown in Fig. 1,
and punch a small hole in the centre (A) through which the powder is afterwards
expelled, and a larger hole B through which the box is filled.
I do not bind myself to any size or strength of material as this varies to suit
the size of the box.
The strip so prepared is then bent as shown in Fig. 2, across the small hole A
and if necessary it may be hardened and tempered, but with suitable steel this is
not necessary, as sufficient elasticity may be obtained without hardening.
The spring body is then covered with paper, Calico or other suitable material of
a toughness sufficient to stand compressing and expanding when it is being used,
the action being that of a pair of bellows, and after being filled through the hole B,
the said hole may be covered and closed by an adhesive label or by similar means.
When required for use a hole is made through the paper into the small hole A
and the opposite end is compressed by the fingers.
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
The manufacture of spring boxes for expelling Powders, substantially as herein-
before described and illustrated.