DE146819C - - Google Patents
Info
- Publication number
- DE146819C DE146819C DENDAT146819D DE146819DA DE146819C DE 146819 C DE146819 C DE 146819C DE NDAT146819 D DENDAT146819 D DE NDAT146819D DE 146819D A DE146819D A DE 146819DA DE 146819 C DE146819 C DE 146819C
- Authority
- DE
- Germany
- Prior art keywords
- scale
- discs
- slots
- disk
- read
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005259 measurement Methods 0.000 description 2
- 208000010201 Exanthema Diseases 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
- G01P3/40—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Der Apparat beruht auf dem Prinzip der stroboskopischen Scheiben. Um mit demselben genaue Messungen vornehmen zu können, werden die durch den ungleichform igen Gang der einen Scheibe hervorgerufenen oszillierenden Bewegungen der Luftschlitze bei vorliegender Erfindung auf einer Skala abgelesen, und die beiden rotierenden Scheiben am Umfang mit einer großen Anzahl sehr schmaler Luftschlitze versehen.The device is based on the principle of stroboscopic discs. To with the same Accurate measurements can be made by the non-uniformity igen course of the oscillating movements of the louvers caused by a disc in the present invention read on a scale, and the two rotating Provided discs on the circumference with a large number of very narrow air slots.
Der den Gegenstand vorliegender Erfindung bildende Apparat besteht somit aus einer Scheibe A mit einer großen Anzahl in bekannter Weise angebrachter schmaler Schlitze oder sonstiger passender Ausschnitte am Umfang, welche an der Kraftmaschine angebracht wird, also mit ungleichförmiger Geschwindigkeit rotiert, und einer zweiten, mit > ebensovielen Schlitzen versehenen Scheibe B, welche unmittelbar vor A mit gleichförmiger Geschwindigkeit, aber entgegengesetzter Drehrichtung rotiert. Die Achsen beider Scheiben fallen in eine Gerade.The apparatus forming the subject of the present invention thus consists of a disk A with a large number of narrow slots or other suitable cutouts made in a known manner on the circumference, which is attached to the prime mover, i.e. rotates at a non-uniform speed, and a second, with> as many Slotted disc B, which rotates immediately in front of A at the same speed, but in the opposite direction of rotation. The axes of both disks fall into a straight line.
Zwischen der Scheibe A und der Kraftmaschine wird in der Höhe der Schlitze eine ruhende Scheibe mit Skala angebracht. Zur bequemen Ablesung wird dieselbe transparent gemacht und von hinten beleuchtet. Der Beschauer sieht parallel der Achse durch die Schlitze auf die. Skala. A stationary disk with a scale is attached between disk A and the prime mover at the level of the slots. It is made transparent and backlit for easy reading. The viewer sees through the slits parallel to the axis. Scale.
Sobald beide Scheiben dieselbe mittlere Geschwindigkeit besitzen, erscheint auf der Skala ein heller Streifen in dunklem Feld, der entsprechend der Winkelabweichungen auf der Skala hin und her pendelt. Bei Änderung der Tourenzahl einer Scheibe wandert der Streifen auf der Skala hin und her. Es läßt sich mit dem Apparat somit auch bequem die bekannte Variation der Tourenzahl nachweisen, welche bei Kraftmaschinen auftreten, die mit einem Ungleichförmigkeitsgrad behaftet sind.As soon as both discs have the same average speed, appears on the Scale a light stripe in a dark field, which corresponds to the angular deviations oscillates back and forth on the scale. When changing the number of revolutions of a disc the stripe moves back and forth on the scale. It can thus be used with the apparatus also conveniently prove the known variation of the number of revolutions, which in power machines occur, which are afflicted with a degree of nonuniformity.
Die. Scheiben können bei passender Form der Schlitze auch in gleichem Sinn rotieren. Statt beide Scheiben mit Schlitzen zu versehen, kann die eine am Umfang mit einer Skala versehen werden. Die dritte ruhende Scheibe fällt dann weg, und die Ausschläge werden mit einem Diopter abgelesen.The. Disks can also rotate in the same direction if the slots are of the right shape. Instead of providing both discs with slots, one can have a Be provided with a scale. The third dormant disk then falls away, and the rashes are read with a diopter.
Die an einer schnellaufenden Dampfdynamo, mit 360 Touren, vorgenommenen Versuche ergaben aber, daß sich für genaue Messungen eigentlich nur der oben beschriebene Apparat mit ruhender Skala eignet.Those made on a high-speed steam dynamo with 360 tours Tests have shown, however, that only the one described above is actually suitable for precise measurements Apparatus with a stationary scale is suitable.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE146819C true DE146819C (en) |
Family
ID=414056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT146819D Active DE146819C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE146819C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE959686C (en) * | 1955-12-22 | 1957-03-07 | Fortuna Werke Spezialmaschinen | Method and device for measuring the elastic phase shift of two or more synchronously running, parallel shafts, motors or the like as a function of the changing load on the connection |
US3276240A (en) * | 1963-07-23 | 1966-10-04 | F W Stewart Corp | Speed comparator |
US3654480A (en) * | 1969-10-17 | 1972-04-04 | Nat Res Dev | Tachogenerators which determine the speed and acceleration of a rotating shaft by using two counter rotating shutters |
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0
- DE DENDAT146819D patent/DE146819C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE959686C (en) * | 1955-12-22 | 1957-03-07 | Fortuna Werke Spezialmaschinen | Method and device for measuring the elastic phase shift of two or more synchronously running, parallel shafts, motors or the like as a function of the changing load on the connection |
US3276240A (en) * | 1963-07-23 | 1966-10-04 | F W Stewart Corp | Speed comparator |
US3654480A (en) * | 1969-10-17 | 1972-04-04 | Nat Res Dev | Tachogenerators which determine the speed and acceleration of a rotating shaft by using two counter rotating shutters |
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