Improvements in Box Files.
Year: 1888

page_text: Date of Application, 21st Nov., 1888
Complete Specification Left, 20th Aug., 1889-Accepted, 2nd Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Box Files.
ARTHUR ERNEST WALKER Manufacturer 79 Milton Street London E.C. do hereby
declare the nature of this invention to be as follows:-
A Spring Box File of which the spring is automatic in its action and works against
a cam by which the spring locks itself and remains thrown up.
It can be released by pressing the arms of spring together when it falls back into
its position pressing the papers.
This is made in two forms A-in which the spring is enclosed in two circular
discs made right & left hand to affix to the box.
B-The coil spring is contained in a box & the cams are affixed to the two ends
thereof.
COMPLETE SPECIFICATION.
Improvements in Box Files.
ARTHUR ERNEST WALKER Manufacturer 18 Chiswell Street London E.C. 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 is a spring box File of which the spring is automatic in its action,
and works against a cam by which the spring locks itself and remains thrown up.
It can be released by pressing the arms of the spring together when it falls back into
its position pressing the papers.
This is made in two forms as shown in drawings A-in which the spring is
enclosed in two circular discs made right and left hand to affix to the box.
B The coil spring is contained in a tubular box and the cams are affixed to the
two ends thereof.
I now proceed to describe the mode of working my said invention.
TT is a box file shown with two spring actions severally to the sides of which are
affixed two hollow discular bosses A and A¹ inside of which the spring, coiled laterally,
works one end butting against a raised point in the boss and so forming a fulcrum,
and the other arm d. f. G. protruding through the bosses and forming a gripper or
clip pressing upon the papers below.
Upon the sides of the bosses are affixed two cams C and C¹ working right and
left the largest part K L of the cam being furthest from the point of contact with the
spring. When the spring is raised beyond the top of the cam it lodges itself and
will remain uplifted so that the papers can be replaced or removed until set at
liberty by bringing the side wires slightly together with the fingers when it regains
its normal position.
Fig. B shows the spring in an elongated form in which the cams are produced
either slotted out of the tubular sack M or being affixed to the outside of it as at N
-but in both the spring works in the same way as above described-when at rest it
is down on the papers as shown at f-when raised against the cam Q. R. it lodges
itself into the recess, lodging itself on the top of cam as indicated by the dotted
lines.

page_text: Having now particularly described the nature of my said invention and in what
manner the same is to be performed I declare that what I claim is the following
novel features:
1 An automatic self-locking spring clip brought into action by means of a cam
and a lateral coil spring.
2 An automatic lock clip spring brought into action with elongated or longitudinal
coil and a cam made in tubular form as heretofore described.
Dated this 25th day of September 1889.
ARTHUR ERNEST WALKER.