An Improved Gauge for Gauging Electrical and other Wires, Drills, Boring-bits, and other similar Articles.
Year: 1895

page_text: Date of Application; 16th Sept., 1895-Accepted, 19th Oct., 1895
COMPLETE SPECIFICATION..
An Improved Gauge for Gauging Electrical and other Wires, Drills,
Boring-bits, and other similar Articles..
ALBERT ERNEST WOODHOUSE of Mokopeka in the Provincial District. of
Hawke's Bay in the Colony of New Zealand Electrical Engineer, 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:-
My invention consists of a simple and inexpensive gauge made as herein-after
described for gauging wire of all kinds (but more especially electrical wire) drills
boring-bits and other similar articles.
The said gauge consists of a strip of sheet steel brass or other suitable material
(or of two or more of such strips jointed together, as herein-after described) in each
of which is cut a straight sided longitudinal, "V"-shaped slot or opening the
converging sides of which form a very acute angle. At suitable distances-along
the said slot and on each face of the gauge lines are scored to indicate the gauges
of different wires from the largest to the smallest and opposite each of these lines
is marked the number of the gauge which it indicates. In the case of a gauge
for gauging electrical wires the faces of the gauge have inscribed upon them in
addition to the lines and numbers above referred to such electrical data or tables
as may be useful to the electrician. Thus one face of the gauge may, have
inscribed opposite the gauge-lines "Safe Ampères" and the reverse face may be
inscribed with the number of feet per "Ohm" and the sectional area of the wires
which are tangent to the sides of the said slot opposite the respective gauge lines.
My improved gauge may be also made in two or more parts jointed together by
means of a rivet or other suitable means so as to be capable of being folded one
over the other like the parts of a pocket-rule. In this case one of the said parts
has a straight sided "V"-shaped slot or opening cut in it of such width as to gauge
wires or other articles of from large to medium diameter and the "V"-shaped slot
or opening in the other part is of such width as to gauge wires or other articles
of from medium to the smallest diameter.
Having thus described the nature of my invention I will proceed to describe the
manner in which the same is to be performed reference being had to the
accompanying drawing and to the letters and figures marked thereon.
Figures 1 and 2 represent respectively the front and back faces of a gauge made
according to my invention for gauging electrical and other wires.
Figure 3 is an edge-view of the said gauge.
Figure 4 represents a gauge made in two parts jointed together the said parts
being unfolded ready for use.
Figure 5 represents the said gauge with the said parts folded one upon the
other, and
Figure 6 is a section of the said gauge the said section being taken upon the
line Figure 5.
The same letters and figures of reference indicate the same parts in all the
figures.
A (Figure 1) is the strip of metal aforesaid and B is the "V"-shaped slot
therein. The dotted circle C indicates a wire in position for gauging the horizontal
lines at the part where the circumference of the wire is tangent to the sides of
the slot indicating the gauge of the wire and other particulars affecting it. Thus
017

page_text: the wire C being tangent to the parts marked by the gauge lines 3 is Nó. 3 wire its
sectional area being 0526 and the "Safe Ampères " 55 and the "feet per Ohm " 6498.
A A Figures 4, 5 and 6 are the two halves of the folding gauge herein-before
referred to. BB are the V-shaped slots therein and D is the rivet by means of
which the said halves are jointed together. It will be obvious that more than two
strips of metal with V-shaped slots may be jointed together as described and that a
hinge similar to a door-hinge may be substituted for the rivet described. The
inscriptions on the faces of the parts A' A³ may be the same as the inscriptions on
the faces of the gauge Figure 1.
I do not limit myself to any particular inscription or data to be used on my
improved gauge as such inscription or data may be varied according to the purpose
for which and the country in which the said gauge is to be used.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I wish it to be understood
that I make no claim to slotted gauges the slots of which are curved or of irregular:
form on one side or on both sides nor to gauges consisting of two or more plates or
pieces of metal or other material so connected that gauge slots or spaces are
produced between opposed edges or faces of the several plates or pieces but I
declare that what I claim is :-
Firstly. The improved gauge herein-before described and illustrated in Figures 1, 2
and 3 of the accompanying drawing that is to say a strip of sheet metal or other
suitable material having a straight-sided longitudinal "V"-shaped slot and lines
and figures indicating the gauges of different sizes of wire or other article and
where such gauge is intended for electrical or other special purposes such inscriptions
marks figures or data as may be desirable.
Secondly. The modification herein-before described and illustrated in Figures 4, 5
and 6 of the accompanying drawing that is to say a gauge made in two or more
parts jointed together each of which has a straight-sided longitudinal “V”-shaped
slot and marks and figures indicating the gauges of different sizes of wire or other
particle and such other inscriptions marks figures or data as may be desirable.
Dated this 3rd day of August 1895.
ALBERT E. WOODHOUSE.