FR2610716A1 - Forestry slide gauge with compensation in circumference and diameter, setting device and claw, made of light alloy - Google Patents

Abstract

The invention relates to the development of a graduated rule allowing measurement: - on one face, of the circumference to within one centimetre and per class of ten centimetres on the basis of a diameter measurement of any tree or other object; - and, on the other face, the diameter, to within a half-centimetre, and per class at five centimetre intervals, starting from a diameter measurement of any tree or other object. This tool can also be used as a setting device for measuring lengths from the ground, and as a claw for marking the lengths or the trees measured. This apparatus is particularly well suited to volume measurement of trees of any species whether standing or felled.

Description

 Caliper of caliper, graver and compensator in circumference and in diameter, in light alloy.

This tool allows you to measure standing trees, felled logs or any other object, differently depending on the face used Face "sliding handle on the left" -:
While measuring a diameter, allows the reading of a circumference to the nearest centimeter, and, in a compensated manner, from ten centimeters to ten centimeters.

r'ace'1òigne'coulissant à droite ":
By reading the diameter to the nearest half centimeter and in a compensated manner from five centimeters to five centimeters.

 In addition, this forest calliper presents, on the back, two retractable points one meter apart, which make it possible to measure lengths on the ground of logs, and thus serve as a point meter.

 It also has a double claw at its end to mark standing trees or the different cuts of a wooden log.

 This device therefore makes it possible to cuber, without using other tools, pieces of wood or other and to use the tariffs or the cubic rates either with a measurement in circumference or with a measurement in diameter.

 This material can be made of light alloy in a light color in order to allow the various graduations to appear as legibly as possible. However, the handles that hold the device will be made of plastic to facilitate use in cold weather.

Existing tools did not allow
reading a compensated circumference of ten centimeters by ten centimeters while measuring the diameter, which is necessary to use certain forest cubic tables,
. nor the length measurement on the ground.

I1 therefore replaces
the dekameter to measure the length of the logs which required two operators,
the traditional compass for measuring diameters and shows the measurement on the same side to the nearest half-centimeter and the compensated measurement from five centimeters to five centimeters,
the centimeter of "seamstress" to measure the circumference of standing trees as well as the needle and hemp thread for measuring the circumferences of logs, operations which are very facilitated by the fact of measuring a diameter while reading a circumference, to the nearest centimeter and compensated ten centimeters to ten centimeters; this avoids having to go around a tree with the arms, a difficult operation when it is large, or when it is about tree trunks placed on the ground, or even tightly pressed against each other. other.

The attached figures illustrate the invention
Figure 1 shows the entire tool with the graduated ruler (1) of one hundred centimeters, diameter side (the opposite side serving for the circumference), the numbers of which face the operator, the fixed part of the device (2) and the sliding part (3), both of a length of fifty-five centimeters, the two points of three centimeters (4) one meter apart and retractable in the direction indicated by the arrow, the double claw (5) to mark trees.

 Figure 2 shows the profile of the rule at full scale, the interior being empty for maximum lightening.

 Figure 3 shows the "centimeter" side (sliding handle on the left hand) with the graduation precise to the nearest centimeter (1), it being understood that 1cm each graduation represents - that is, approximately, 0.318 cm, and the compensated graduation of ten centimeters in ten centimeters (2) materialized by clear and black ranges going for the range of ten for example, from five to fifteen centimeters.

 Finally, Figure 4 shows the "diameter" side (sliding handle on the right hand) with the graduation precise to the nearest half-centimeter (1) and the compensated graduation from five centimeters to five centimeters (2) materialized by clear and black areas ranging for the range of ten, for example from 7.5 cm to 12.5 cm.

 This device is particularly suitable for cubing standing trees or felled trees of all species.

Claims (1)

 1) The instrument comprises in combination - a double ruler graduated differently depending on the face a) on the face with sliding handle in the left hand: double graduation to the nearest centimeter and in 10 cm ranges for the measurement of tree circumferences on foot, or felled, or any other object b) on the face with sliding handle in the right hand: double graduation to the nearest 1/2 centimeter and in increments of 5 centimeters for the measurement of diameters of trees on standing, or felled , or any other object - 2 retractable points 1 meter apart, located on the back of the ruler and allowing length measurements on the ground; - a double claw located at the end of the ruler and allowing marking by clawing lengths on the ground or determining, by clawing, cuts on trunks.