US647791A - Speed-indicator. - Google Patents
Speed-indicator. Download PDFInfo
- Publication number
- US647791A US647791A US71002299A US1899710022A US647791A US 647791 A US647791 A US 647791A US 71002299 A US71002299 A US 71002299A US 1899710022 A US1899710022 A US 1899710022A US 647791 A US647791 A US 647791A
- Authority
- US
- United States
- Prior art keywords
- speed
- magnet
- arbor
- armature
- indicator
- 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.)
- Expired - Lifetime
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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
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
- G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
Definitions
- the object of my invention is to provide an instrument for accurately determining the speed of moving bodies; and the same consists .in the novel features of construction and in the combination and arrangement of parts hereinafter fully described and claimed, and illustrated by the accompanying drawings, in which- Figure l is a vertical sectional view.
- Fig. 2 is a plan view.
- Figs. 3, 4, and 5 are detail views of portions of the instrument.
- the magnet consists of the upper member A, having the radial arms l, and the lower member B, having radial arms 2, uptu rned at 3 in line with and spaced from arms 2 to form annular space C.
- the magnet parts are stamped from suitable metal and the lower member B bent to proper form, the alternate arms having opposite polarity.
- the magnet is secured to the upper end of shaft D, rota table in bushing E, which is vertically adjustable in the lo ⁇ wer section F of the case.
- G is the bushing lockmut, and H the shaft-collar.
- Q is a pointer or hand carried by the arbor and working over dial R, secured to upper- 'most ring-plate K.
- the arbor and armature geared to or operatively connected with the u moving part whose speed is to be determined, so as to be rotated thereby at predetermined serai No. 710,022. (No man relative speed.
- the currents generated by the magnet when thus rotated have an impelling iniiuence on the armature, causing the same to turn with arbor M against the pull of spring S, and the pointer moving therewith over the dial indicates the speed per hour or other unit ofV the moving part.
- a speed-indicator comprising a rotary magnet, a vertical arbor having bearings above and concentric with the magnet, an arm projecting laterally from the arbor, a cirL cular armature supported at one side by said arm, a spring for resisting the rotation of the armature in the direction of movement of the magnet, a pointer carried by the arbor, and a scale over which the pointer moves, substantially as shown and described.
- a speed-indicator comprising a case, a rotatable magnet in the lower part thereof, ring-plates K secured in the case and carrying opposite inwardly projecting bearingarms L, arbor M mounted in the bearings, annular armature P sustainedby the arbor, a spring for resisting rotation of the arbor, a pointer, and a dial, substantially as shown and described.
- Aspeed-indicator comprising a shaft; a magnet secured to and rotatable with the shaft, said magnet consisting of the upper member A having radial arms l, and lower member B having radial arms 2, arms 2 having angular extremities 8 alining with but spaced froinfarms l; a circular armature rolIn vtestimony whereof I have hereunto set tatably mounted coneentroally with the said myhand in presence of two subscribing witmagnet and proj eating into the space between' nesses.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
, Patented Apr. I7, |900. .LV c. Annan. SPEED INDICATOR.
v Applicimn med mr. 22, 1899.) l
'(IIo Model.)
Flo. 4
mom/Ey.
m5 Nonms PETERS oo., mmaufwo.. WASHINGTON. v c.
' 'mf-mn STATES PATENT canes.
JAMES o. ARMOR, or PITTsBURG, rENNsYLvANiA.
sPEoIrIoirroN forming part or Letters Patent No. 647,791, dated alpini 17, 1900.
Applicant mea Maier 22,' 1899.
T0 all whom it may concern:
Be it known that I, J AMES C. ARMOR, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Speedlndicators, of which the following is a specification.
The object of my invention is to provide an instrument for accurately determining the speed of moving bodies; and the same consists .in the novel features of construction and in the combination and arrangement of parts hereinafter fully described and claimed, and illustrated by the accompanying drawings, in which- Figure l is a vertical sectional view. Fig. 2 is a plan view. Figs. 3, 4, and 5 are detail views of portions of the instrument.
The magnet consists of the upper member A, having the radial arms l, and the lower member B, having radial arms 2, uptu rned at 3 in line with and spaced from arms 2 to form annular space C. The magnet parts are stamped from suitable metal and the lower member B bent to proper form, the alternate arms having opposite polarity. The magnet is secured to the upper end of shaft D, rota table in bushing E, which is vertically adjustable in the lo`wer section F of the case. G is the bushing lockmut, and H the shaft-collar.
Confined between jointed parts F and J of the case are the ring-plates K, carrying the oppositely-extending and inwardly-projecting arms L, which constitute bearings for arbor M, the upper arm carrying adjustable bearing-screw N. Secured to the arbor is arm O, carrying circular armature P, which depends in magnet-space C and is rotatable concentrically therewith.
Q is a pointer or hand carried by the arbor and working over dial R, secured to upper- 'most ring-plate K. The arbor and armature geared to or operatively connected with the u moving part whose speed is to be determined, so as to be rotated thereby at predetermined serai No. 710,022. (No man relative speed. The currents generated by the magnet when thus rotated have an impelling iniiuence on the armature, causing the same to turn with arbor M against the pull of spring S, and the pointer moving therewith over the dial indicates the speed per hour or other unit ofV the moving part. By means of bushing E the vertical relation of the magnet and armature maybe varied as circumstances may require, the greater the dependence of the armature in space C the greater being the impelling force. The instrument-case may be supported and held fixed in any suitable manner. (Not shown.)
By Vmeans of this instrument the speed of moving bodies of many and varied forms may be accurately determined, it being only necessary to so gear shaft D that it will have proper speed relative to the moving body or in lieu thereof to conform the dial to such ,movement Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-
1. A speed-indicator comprising a rotary magnet, a vertical arbor having bearings above and concentric with the magnet, an arm projecting laterally from the arbor, a cirL cular armature supported at one side by said arm, a spring for resisting the rotation of the armature in the direction of movement of the magnet, a pointer carried by the arbor, and a scale over which the pointer moves, substantially as shown and described.
2. A speed-indicator comprising a case, a rotatable magnet in the lower part thereof, ring-plates K secured in the case and carrying opposite inwardly projecting bearingarms L, arbor M mounted in the bearings, annular armature P sustainedby the arbor, a spring for resisting rotation of the arbor, a pointer, and a dial, substantially as shown and described.
Aspeed-indicator comprising a shaft; a magnet secured to and rotatable with the shaft, said magnet consisting of the upper member A having radial arms l, and lower member B having radial arms 2, arms 2 having angular extremities 8 alining with but spaced froinfarms l; a circular armature rolIn vtestimony whereof I have hereunto set tatably mounted coneentroally with the said myhand in presence of two subscribing witmagnet and proj eating into the space between' nesses.
dial; substantially as shown and described. C. C. LEAN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71002299A US647791A (en) | 1899-03-22 | 1899-03-22 | Speed-indicator. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71002299A US647791A (en) | 1899-03-22 | 1899-03-22 | Speed-indicator. |
Publications (1)
Publication Number | Publication Date |
---|---|
US647791A true US647791A (en) | 1900-04-17 |
Family
ID=2716364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US71002299A Expired - Lifetime US647791A (en) | 1899-03-22 | 1899-03-22 | Speed-indicator. |
Country Status (1)
Country | Link |
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US (1) | US647791A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE745146C (en) * | 1935-12-18 | 1944-02-28 | Vdo Tachometer A G | Eddy current tachometer |
US2731025A (en) * | 1954-08-31 | 1956-01-17 | Foxboro Co | Magnetic drag speed measurement device |
US3419027A (en) * | 1964-02-20 | 1968-12-31 | Daimler Benz Ag | Speed responsive pressure control device |
US4186609A (en) * | 1977-03-04 | 1980-02-05 | Max Baermann | Eddy-current device for measuring rotational speed |
EP3703209A1 (en) | 2019-03-01 | 2020-09-02 | Fundación Circe - Centro de Investigacion de Recursos y Consumos Energéticos | Protection method of an electrical distribution and/or transmission network against short-circuits |
-
1899
- 1899-03-22 US US71002299A patent/US647791A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE745146C (en) * | 1935-12-18 | 1944-02-28 | Vdo Tachometer A G | Eddy current tachometer |
US2731025A (en) * | 1954-08-31 | 1956-01-17 | Foxboro Co | Magnetic drag speed measurement device |
US3419027A (en) * | 1964-02-20 | 1968-12-31 | Daimler Benz Ag | Speed responsive pressure control device |
US4186609A (en) * | 1977-03-04 | 1980-02-05 | Max Baermann | Eddy-current device for measuring rotational speed |
EP3703209A1 (en) | 2019-03-01 | 2020-09-02 | Fundación Circe - Centro de Investigacion de Recursos y Consumos Energéticos | Protection method of an electrical distribution and/or transmission network against short-circuits |
WO2020178006A1 (en) | 2019-03-01 | 2020-09-10 | Fundacion Circe Centro De Investigacion De Recursos Y Consumos Energeticos | Protection method of an electrical distribution and/or transmission network against short-circuits |
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