Improvements in and relating to Computing Scales.
Year: 1898

page_text: Date of Application, 2nd July, 1898-Accepted, 15th Oct., 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Computing Scales.
I, MAX LEVI, of 60, Frankfurter-Allee, Berlin, in the Empire of Germany,
Veneer Dealer, 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:—
The tool or device forming the subject of this invention, serves for determining
the square superficial areas of boards, floors or other surfaces, this determination
being effected without the necessity of any calculation-by merely displacing
a special slide, which is adjusted according to the width of the board or the like,
to be measured.
This measuring tool or device is represented in the accompanying drawing,
in which:-
Figure 1 is a perspective view thereof, while Figure
figures unfolded or unwound from this tool or device.
represents a scale of
Figures 3 and 4 represent in side elevation and horizontal section another con-
structional form of the measuring tool, devised in this case as a tape-measure.
Figure 5 is a perspective view of the slide.
As will be seen from Figure 1, the rule a is of a square cross-section and has
a group of figures provided upon each of its four surfaces I, II, III, IV, which
group, continuing from one surface to the other, is formed of mathematically
calculated figures. This table or index resulting from the four surfaces of the
rule, is represented in Figure 2 of the drawing, each individual surface being
indicated by more solid lines.
According to the division or scale, represented, each surface possesses eight rows
of figures. In the first row of figures of the first surface I, the numbers 0, 20;
0, 22; 0, 24; 0, 26; 0, 28 and so forth, are provided; in the second row of figures
of this surface I, the numbers 0, 21; 0, 23; 0, 25; 0, 27; 0, 29; 0, 32; 0, 34;
and so forth; and in the penultimate row of figures of the last surface IV, the
numbers 0, 50; 0, 55; 0, 60; 0, 65; 0, 70; 0. 75; 0, 80; are provided, as shown
in Figure 2. The last row of this surface is provided with the ordinary metric
scale. The figures commence at a distance of 10 centimetres from the end of the
rule, which at this said end is furnished with a plate b. This plate projects at
all points beyond the rule, thereby forming a stop edge. The opposite extremity,
of this rule is constructed in form of a handle c.
The whole rule is one metre in length and is mounted with a slide d, surrounding
the same like a ring. This slide, as shown in Figure 5 is provided with numbers
2, 00; 2, 10; 2, 20; 2, 30; 2, 40; 2, 50; 2, 60; 2, 70; and so forth, which, in
groups of always eight, are distributed in continuation upon the four surfaces of
the slide, d, in such a manner, that the first number 2, 00 upon the slide corre-
sponds to the uppermost row of figures upon the first surface I, of the rule; the
second, 2, 10, to the second row of figures on the first surface I, of the rule.
When using the tool or device, first of all the length of the object to be measured,
for instance, of a board, is fixed by means of the metric scale of the tool which

page_text: length may be supposed to be 2, 20 metres. Thereupon the measuring tool is laid
across the board to be measured, so that the stop-edge of the tool lies against the
one longitudinal edge, then the slide d is moved toward the other longi-
tudinal edge of the board, this position of the slide being indicated in Figure 2
by the linear, and now the number, lying adjacent to the length-indicating-
metric-number 2, 20 upon the slide d is read, this number being 0, 42. This latter
number 0, 42 indicates the square superficial area of the measured board, which
was in width equal to 0, 19 metres. This width thus need not be first ascertained
by special measuring and be multiplied by the longitudinal measure, as was
previously necessary.
Instead of being provided with a rule-shaped measuring body, the measuring
tool may also be furnished with a band or tape-shaped measuring body, as repre-
sented in Figures 3 and 4. The tape-measure then may be adapted to auto-
matically roll up in a casing, analogous to the ordinary tape-measure. The slide d
is rigidly fixed to the casing, while the stop-edge is firmly secured on the extremity
of the movable band. "Preferably both sides of the band or tape are utilized, so
that upon each side 16 rows of figures are provided; the tape a being accordingly
kept narrower.
+
The method of handling, this tape-measure is exactly the same as that of
handling the rule.
1. *.**
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:
A measuring tool or device for ascertaining the areas of boards, floors, or other
objects, presenting this characteristic feature, that a slide d containing the longi-
tudinal measures, is so adjusted to the. width of the boards or the like to be mea-
sured, that the stop-edge 6 of the tool a and the slide, d each embrace one edge
of the board or the like, in which operation the slide d adjusts itself opposite one
of the figures of the rows arranged upon the sides of the tape or rule shaped
tool, of which figures the one adjacent to the longitudinal number of the slide d
indicates the area of the measured board.
Dated this 2nd day of July 1898.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I: Mech. E.,
Chartered Patent Agent,.
70, Chancery Lane, London, W.C:, Associate Agent.