and such Articles.
Year: 1886

page_text: and such Articles.
す
I THOMAS PETER JOHNSTON, The Manse, Carnbee, Pittenweem, Fifeshire,
Scotland, Engineer & Electrician, do hereby declare the nature of my invention
for IMPROVEMENTS IN PLANS, GUIDES, MAPS, CALENDARS, TIMETABLES AND SUCH
ARTICLES to be as follows:-
The Plan, Guide, Map, Calendar, Time table or such similar article, being coiled
in a case of metal or other material, when drawn out, is returned to its place and
recoiled by means of a spring of metal or india rubber. The case may be made in
any portable form, or may be attached to or form part of such articles as pencil
cases, walking-sticks umbrellas &c.
COMPLETE SPECIFICATION.
Improvements in Plans, Guides, Maps, Calendars, Time-tables,
and such Articles.
I, THOMAS PETER JOHNSTON, Manse of Carnbee, Pittenweem, Fife, Scotland,
Engineer & Electrician, do hereby declare the nature of my invention for
IMPROVEMENTS IN PLANS GUIDES, MAPS, CALENDARS, TIME-TABLES &C, and in
what manner the saine is to be performed, to be particularly described and
ascertained in and by the following statement:—
The purpose of this invention is to make such articles as Plans, Guides, Maps,
Calendars, Time-tables &c, more portable and convenient for use, by the expedient
of coiling them in a case by means of a spring of metal or india rubber.
The manner in which I propose to do this is as follows.
An outer case is prepared, preferably of thin metal. Within this case is placed
the Plan, Guide &c. done upon cloth, paper or other suitable material, attached to
LDE

page_text: a hollow spindle and coiled round the same. The case has a slot in its length,
through which the Plan, Guide &c is drawn out.
Through the length of the hollow spindle are passed cords of india-rubber, which
are suspended from the ends of the outer case.
Between these cords, and through the centre of the hollow spindle, a pin passes
diametrically, causing the spindle as it revolves to twist the rubber cords. Initial
tension and torsion are given to these cords.
When the Plan, Guide &c is drawn out the torsion of the india-rubber is
increased, and, when it. is released, the action of the india-rubber draws it within
the case and re-coils it.
The accompanying Drawings will illustrate this construction. Figure 1 shows.
the Plan, Guide &c. in longitudinal section. Figure 2 is a cross section. Figure 3
is an elevation with the Plan, Guide &c. partly drawn out. Figure 4 shows the
application to a pencil-case.
A is the outer case from the ends of which the india-rubber cords B, B are
suspended. C is the hollow spindle through which passes the pin D, E is the
Plan or Guide and F. F. are caps covering the ends of the case.
•
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 use of a portable case, with coiling spring, in connection with Plans,
Guides, Maps, Calendars, Time-tables and other similar articles.
2. The use of india-rubber as a spring in this combination.
3. The arrangement and construction of apparatus substantially as herein
described.
4. The employment of such articles to form part of pencil cases walking-
sticks &c.
D