Improvements in and relating to Combined Foot-rules and Set- squares.
Year: 1897

page_text: Date of Application, 30th Dec., 1897-Accepted, 9th July, 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Combined Foot-rules and Set-
squares.
I, HENRY STANhope Philippe, of Monghyr, in the Presidency of Bengal,
British India, but at present residing at 26, Ripon Street, Calcutta, in the said
Presidency, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The object of my invention is to provide a small and portable foot-rule which
shall besides all the usual measuring. scales contain a number of articles useful
to engineers and the like.
Referring to the accompanying drawings in which similar letters of reference
indicate like parts throughout,
Figure 1 shows my rule open with the set-square in position, and
Figure 2 the reverse side of same closed.
This rule is of the usual form and folds up in the usual manner. It has, how-
ever, an additional piece A (hereinafter called the base) which is constructed to
fold up with the rule and is hinged onto the inner end of one of the arms B of the
rule. On the inner end of the other arm C is a pin D and at certain distances
along the base A are notches E arranged to fit onto the pin D. These notches
are so arranged that when the pin fits into the furthest notch, the two arms of
the rule will be at right angles while the other notches are so arranged at intervals
so as to measure 5 degrees or any number of degrees at a time. Thus by the use
of the base A. the arms of the rule may be made into a set-square or accurately
adjusted at any angle between 90° and 0° at the pleasure of the operator. When
closed the greater portion of this base fits into a space provided on the inner side
of the arm B while the remainder is folded back and lies along the outside of the
closed rule. If desired this base A could be made longer and have notches made
thereon for measuring angles more than a right angle.
As a further improvement I insert in the two arms of the rule, at places where
they will not materially interfere with the use of the rule as a measure, a
thermometer F, spirit-level G, compass and sundial H, and a slide. J.. The slide
consists of two pieces of metal having respectively 30 and 50 equal divisions,
which may be used as representing any assumed proportions, as for instance the
scale having 30 divisions can be taken as equal to one inch. The foot rule is
provided with a groove or other suitable means into which the slide can be inserted
and retained until required for use when the respective divisions can be pulled
out either together or separately. The arrangement and positions of the ther-
mometer, spirit-level etcetera are immaterial and I claim to vary same as I may
find convenient or necessary.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. In a foot-rule, the base A having notches thereon to admit of the arms of
the rule being adjusted to any angle, substantially as described and illustrated.
2. A foot-rule having inserted therein a thermometer, spirit-level, compass,
sundial and slide, or one or any of them, substantially as described and illustrated.
3. The arrangement and combination of the various parts substantially as
described and illustrated.
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WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.