DE210708C - - Google Patents
Info
- Publication number
- DE210708C DE210708C DENDAT210708D DE210708DA DE210708C DE 210708 C DE210708 C DE 210708C DE NDAT210708 D DENDAT210708 D DE NDAT210708D DE 210708D A DE210708D A DE 210708DA DE 210708 C DE210708 C DE 210708C
- Authority
- DE
- Germany
- Prior art keywords
- gas
- steam
- revolutions
- machines
- vibrations
- 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
- 230000000737 periodic Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000035939 shock Effects 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
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/02—Devices characterised by the use of mechanical means
- G01P3/14—Devices characterised by the use of mechanical means by exciting one or more mechanical resonance systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Nachdem es bekannt geworden ist, die Frequenz von Luftimpulsen durch akustische Resonanzwirkung zu bestimmen, ist man später dazu übergegangen, periodische Luftströme zur Erregung sichtbarer Schwingungen elastischer Resonanzkörper zu verwenden, und zwar können dabei, wie bekannt, die Luftwellen entweder künstlich erzeugt oder auch Luftströme verwendet ,werden, die, wie z. B.After it became known, the frequency of air pulses through acoustic To determine the effect of resonance, one later switched to periodic air currents to use elastic resonance bodies to excite visible vibrations, and as is well known, the air waves can either be generated artificially or also Air currents are used, which, such as. B.
to in der Nähe eines Speichenrades, von selbst entstehen.to arise by itself near a spoked wheel.
Derartige zufällig auftretende Luftströme werden indessen im allgemeinen kaum die nötige Intensität zu einer kräftigen Erregung der Resonanz körper haben.Such accidental air currents, however, are generally hardly the have the necessary intensity to vigorously excite the resonance bodies.
Nun ist aber in neuerer Zeit die Anzahl der Kraftimpulse z. B. bei den vielzylindrigen Automobilmotoren so gesteigert worden, daß diese Impulse hinsichtlich ihrer Frequenz bereits unmittelbar geeignet erscheinen, um einen Frequenzmesser anzuregen. Erfahrungsgemäß sind nämlich Resonanzkörper nur von einer gewissen Schwingungszahl aufwärts praktisch verwendbar, weil sie andernfalls durch jede zufällige kleine Erschütterung in beträchtliche Schwingungen geraten.But recently the number of force pulses z. B. in the multi-cylinder Automobile engines have been so increased that these pulses in terms of their frequency already appear immediately suitable to stimulate a frequency meter. According to experience namely, resonance bodies are only practical with a certain number of vibrations upwards usable because otherwise they will be sizeable by any random small shock Vibrations.
Gegenstand der vorliegenden Erfindung ist dementsprechend: Benutzung der Druckänderungen des gasförmigen Mediums im Arbeitszylinder oder auch in den Druck-, Saug- oder Auspuffleitungen der Kraftmaschine, deren Umdrehungszahl bestimmt werden soll, zur Betätigung eines Frequenzmessers, wobei die Benutzung auch eine indirekte sein kann, derart, daß die Druckänderungen vermittels trennender Membranen o. dgl. eine besondere zum Frequenzmesser führende Luftsäule in Schwingung setzen.The object of the present invention is accordingly: Use of the pressure changes of the gaseous medium in the working cylinder or in the pressure, suction or exhaust lines of the engine, whose The number of revolutions is to be determined for actuating a frequency meter, the Use can also be indirect, in such a way that the pressure changes mediate separating membranes or the like. A special air column leading to the frequency meter in Set vibration.
Auf der beiliegenden Zeichnung ist eine besondere Ausführungsform dargestellt. Wenn der Raum hinter der Membran m ζ. Β mit dem Zylinder einer arbeitenden Maschine verbunden wird, so füllt und entleert er sich in schnellem Wechsel, und die Membran schwingt taktmäßig mit. Diese Schwingungen werden durch einen Hebel h auf den bekannten Frahmschen Kamm/ übertragen.A particular embodiment is shown in the accompanying drawing. If the space behind the membrane m ζ. Β is connected to the cylinder of a working machine, it fills and empties in rapid succession, and the membrane oscillates with it in rhythm. These vibrations are transmitted to the well-known Frahm's comb / by a lever h.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE210708C true DE210708C (en) |
Family
ID=472570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT210708D Active DE210708C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE210708C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2616681A (en) * | 1948-07-15 | 1952-11-04 | Sperry Corp | Angular velocity responsive apparatus |
US2875998A (en) * | 1956-07-02 | 1959-03-03 | Roland E Gunther | Vehicular speed indicators |
US2879467A (en) * | 1959-03-24 | Stern | ||
US2914908A (en) * | 1953-11-09 | 1959-12-01 | Siemens Ag | Shaft revolving apparatus, particularly for turbine generators |
US3059480A (en) * | 1960-06-16 | 1962-10-23 | Henry W Carpenter | Tachometer |
-
0
- DE DENDAT210708D patent/DE210708C/de active Active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879467A (en) * | 1959-03-24 | Stern | ||
US2616681A (en) * | 1948-07-15 | 1952-11-04 | Sperry Corp | Angular velocity responsive apparatus |
US2914908A (en) * | 1953-11-09 | 1959-12-01 | Siemens Ag | Shaft revolving apparatus, particularly for turbine generators |
US2875998A (en) * | 1956-07-02 | 1959-03-03 | Roland E Gunther | Vehicular speed indicators |
US3059480A (en) * | 1960-06-16 | 1962-10-23 | Henry W Carpenter | Tachometer |
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