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990,603
882 in the main group a', which, by a simple
mental process, added to 9800 gives 10,(8$2,
the required number.
The terms vertical, horizontal, right and
5 left used above are to be understood as being
merely relative, and that the arrangement
might be altered so as to read from left to
right or vp and down as might be required
by different individuals, without departing
1o from the spirit of the invention, and I do
not desire to be limited to the exact form or
arrangement of the device hereinbefore set
forth.
I claim
15 A lumber calculating chart as described
having dimension indicia at its top denoting
the sectional area of pieces of lumber the
board feet in which are to be computed, and
said. chart embodying a plurality of blocks
20 or groups of figures, each group of figures
being associal el with a numeral indicative
of the. linear feet of boards for which said
group affords a con 'jp)ltatioli, and including
a series of base nnmeraLs denoting the num-
ber of board feet in one or more pieces of 25
lumber of the size prescribed by the dimen-
sion indicia, and each group embodying a
vertical column of key numerals represent-
in the numbers of pieces of lumber in tens,
a horizontal column of numerals represent- 30
ing numbers of pieces of lumber in units,
and other numerals in each group constitut-
ing multiples of the tens and unit numerals
aforesaid and the numerals indicating the
linear feet and associated with each group 35
of figures, the two last mentioned sets of
numerals being located at one side of the
key numerals, and a final set of numerals
arranged on the opposite side of the key
numerals *and representing multiples of 40
hundreds of the base numeral.
In testimony whereof I affix my signature
in presence of t wo witnesses.
JAMES F. STALCUP.
Witnesses:
F. 13. Dwxin,
T. J. McDONALD,
0i