AT222380B - Tree pliers - Google Patents
Tree pliersInfo
- Publication number
- AT222380B AT222380B AT145561A AT145561A AT222380B AT 222380 B AT222380 B AT 222380B AT 145561 A AT145561 A AT 145561A AT 145561 A AT145561 A AT 145561A AT 222380 B AT222380 B AT 222380B
- Authority
- AT
- Austria
- Prior art keywords
- tree
- pliers
- measuring
- photocell
- teeth
- Prior art date
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
<Desc/Clms Page number 1>
Baumme sszange
Gegenstand des Stammpatentes ist eine Baummesszange zur Messung und Registrierung des Durchmessers von Baumstämmen sowie gegebenenfalls zur Berechnung des Stammvolumens, bei der die Messschiene pro Masseinheit je eine Kerbe oder einen Zahn aufweist, welche bei der Verschiebung des beweglichen Schenkels der Zange einen in diesem angeordneten elektrischen Kontakt betätigen, über welchen eine dem Ausmass der Verschiebung dieses Schenkels proportionale Anzahl von elektrischen Impulsen einem von der Messzange getrennt angeordneten Registrier- bzw. Auswertegerät zugeführt werden.
Die im Ausführungsbeispiel des Stammpatentes vorgeschlagenen mechanischen Kontakte neigen bei grösserer Impulshäufigkeit zu Prellerscheinungen, wodurch sich Fehler in der Anzahl der Impulse ergeben können. Durch Verwendung einer Lichtquelle, deren Lichtstrahl durch die an der Messschiene angebrach- ten Zähne unterbrochen wird, können an einem dahinterliegenden lichtempfindlichen Element Spannungsoder Widerstandsschwankungen erhalten werden, welche der Anzahl der durch die Zähne hervorgerufenen Unterbrechungen entsprechen. Ein nachgeschalteter Verstärker führt die Schwankungen einem Relais zu, welches auch grosse Impulszahlen pro Sekunde übertragen kann. Dadurch werden Prellungserscheinungen vermieden und die dem Stammdurchmesser entsprechenden Impulse einwandfrei auf die nachgeschaltete Zählkette übertragen.
Zur eindeutigen Richtung der Impulse ist im beweglichen Schenkel ein Umschaltkontakt angeordnet, welcher durch Zusammenwirken mit den Zähnen bzw. Kerben der Messschiene, je nach der Bewegungsrichtung des Schenkels, die elektrischen Impulse positiv oder negativ weiterleitet.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Tree pliers
The subject of the master patent is tree measuring pliers for measuring and registering the diameter of tree trunks and, if necessary, for calculating the trunk volume, in which the measuring bar has a notch or a tooth per unit of measurement, which, when the movable leg of the pliers is moved, has an electrical contact arranged in this actuate, via which a number of electrical pulses proportional to the extent of the displacement of this leg are fed to a recording or evaluation device arranged separately from the measuring clamp.
The mechanical contacts proposed in the embodiment of the parent patent tend to bounce when the pulse frequency is greater, which can result in errors in the number of pulses. By using a light source whose light beam is interrupted by the teeth attached to the measuring rail, voltage or resistance fluctuations can be obtained on a light-sensitive element located behind, which correspond to the number of interruptions caused by the teeth. A downstream amplifier feeds the fluctuations to a relay, which can also transmit large numbers of pulses per second. This prevents bruises and the impulses corresponding to the trunk diameter are properly transmitted to the downstream counting chain.
For a clear direction of the impulses, a changeover contact is arranged in the movable leg, which by interacting with the teeth or notches of the measuring bar, depending on the direction of movement of the leg, forwards the electrical impulses positively or negatively.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT145561A AT222380B (en) | 1961-02-22 | 1961-02-22 | Tree pliers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT217723D | |||
AT145561A AT222380B (en) | 1961-02-22 | 1961-02-22 | Tree pliers |
Publications (1)
Publication Number | Publication Date |
---|---|
AT222380B true AT222380B (en) | 1962-07-25 |
Family
ID=25595896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT145561A AT222380B (en) | 1961-02-22 | 1961-02-22 | Tree pliers |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT222380B (en) |
-
1961
- 1961-02-22 AT AT145561A patent/AT222380B/en active
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