GB112623A - Improvements in Differential Pressure Measuring and Integrating Instruments for Ships' Logs. - Google Patents
Improvements in Differential Pressure Measuring and Integrating Instruments for Ships' Logs.Info
- Publication number
- GB112623A GB112623A GB456/18A GB45618A GB112623A GB 112623 A GB112623 A GB 112623A GB 456/18 A GB456/18 A GB 456/18A GB 45618 A GB45618 A GB 45618A GB 112623 A GB112623 A GB 112623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- armature
- arm
- speed
- circuit
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
- G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
- G01P5/17—Coupling arrangements to the indicating device
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Measurement Of Distances Traversed On The Ground (AREA)
Abstract
112,623. Ahnstrom, E. G., and Tenow, O. A. A. Jan. 2, 1917, [Convention date]. Integrating. - In pressuresdifference logs or speed indicators for ships in which the integral of the speed is transmitted as an indication of the distance travelled to a distant instrument, the speedindicator controls the time interval between successive actuations of a switch controlling the operating-circuit of the distance-indicator. The pressure gauge of the speed-indicator comprises chambers 3, 4, Fig. 2, connected to a Pitot-tube or the like and separated by a diaphragm 2, and packing 6 surrounding a pin 5. The movements of the pin are transmitted through multiplying gear 7, 11 to a pointer 14 moving over a speed dial. The support 13 of the pointer is provided with a part 16 curved empirically to produce a deflection of an arm 20, Fig. 3, loose on a shaft 18, dependent on the speed. This arm is held in engagement with the curved member 16 by a spring 22 and counter-balance 21, and carries a contact 19 adapted to close against a contact 26 on an arm 25 carried by an armature 23 of an electro-magnet 24. When the electro-magnet 24 is de-energized, the armature 23 and the arm 25 move upwards under the influence of a spring 230 until the contact 26 meets the contact 19, thereby closing a relay circuit 35, 38 and the circuit of the' electro-magnet, Figs. 3 and 7. The armature 23 is thus attracted and the circuit of the relay coil 35 is immediately broken. A second coil 36, however, still maintains the switch 38 closed, until a contact 27 on the arm 25 meets a fixed contact 28, when it is short-circuited, thus breaking the circuit of the electro-magnet 24. During the time the electro-magnet is energized, a switch 33 controlling the circuit of a distant indicator 34 is maintained closed, and the indicator is advanced. The return upward movement of the armature 23 is controlled by clockwork or other braking device to ensure a uniform speed, the armature being put in gear with the clockwork through a ball clutch 30 and disk 29, Fig. 5. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the armature 23 is replaced by an electric motor rotating at a uniform speed and driving two worm wheels alternately, the contact arm 25 then moving uniformly in each direction This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE112623X | 1917-01-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB112623A true GB112623A (en) | 1919-01-08 |
Family
ID=32294433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB456/18A Expired GB112623A (en) | 1917-01-02 | 1918-01-08 | Improvements in Differential Pressure Measuring and Integrating Instruments for Ships' Logs. |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE307554C (en) |
FR (1) | FR488493A (en) |
GB (1) | GB112623A (en) |
NL (1) | NL10021C (en) |
-
0
- DE DENDAT307554D patent/DE307554C/de active Active
- NL NL10021D patent/NL10021C/xx active
-
1918
- 1918-01-08 GB GB456/18A patent/GB112623A/en not_active Expired
- 1918-01-19 FR FR488493A patent/FR488493A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL10021C (en) | |
FR488493A (en) | 1918-10-15 |
DE307554C (en) |
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