GB853661A - Improvements in or relating to measurement of distance - Google Patents
Improvements in or relating to measurement of distanceInfo
- Publication number
- GB853661A GB853661A GB323956A GB323956A GB853661A GB 853661 A GB853661 A GB 853661A GB 323956 A GB323956 A GB 323956A GB 323956 A GB323956 A GB 323956A GB 853661 A GB853661 A GB 853661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- workpiece
- electrode
- standard
- profile
- meter
- 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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
853,661. Electric tests. BRISTOL SIDDELEY ENGINES Ltd. April 30, 1957 [Feb. 1, 1956], No. 3239/56. Class 37 The profile of a workpiece is compared with a standard by striking an arc between an electrode and the workpiece, causing the electrode to follow the desired profile and measuring some characteristic of the arc to indicate difference between the standard profile and the workpiece. As shown, Fig. 1, the standard and workpiece to be compared are each mounted, between one of a pair of headstocks 22, 23 and tailstocks 25, 26. A counter-balanced cross arm carries a probe 11 and the electrode 12, the probe resting on the profile of the standard and the electrode being spaced a small distance from the workpiece. The two headstocks are coupled and are rotated together by handle 34. Variations in the arc current representing differences between the profiles are indicated on meter 17. Circuit (Fig. 3). The spark is produced between the electrode 12 and workpiece 13, in the secondary winding of an E.H.T. transformer T1. The secondary is in series with a rectifier MR1 shunted by capacitors C1, C2, limiting resistor R1 and variable top resistor R2. A series of D.C. pulses passes through R2. Part of the voltage across the resistor is tapped off, amplified at V2, V3, and indicated on meter 16. Condensers Cl C2 maintain the gap ionized during the non-conducting half cycles. The constant reading on meter 16, produced by the capacity coupling of winding S1 with the transformer core is backed off by an anti-phase voltage derived from secondary winding S1<SP>1</SP>.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB323956A GB853661A (en) | 1956-02-01 | 1956-02-01 | Improvements in or relating to measurement of distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB323956A GB853661A (en) | 1956-02-01 | 1956-02-01 | Improvements in or relating to measurement of distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB853661A true GB853661A (en) | 1960-11-09 |
Family
ID=9754574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB323956A Expired GB853661A (en) | 1956-02-01 | 1956-02-01 | Improvements in or relating to measurement of distance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB853661A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173908A (en) * | 1985-04-17 | 1986-10-22 | Daimler Benz Ag | A device for the contactless determination of distance by means of a spark discharge |
| US4825037A (en) * | 1987-03-18 | 1989-04-25 | Daimler-Benz Aktiengesellschaft | Apparatus for contactless determination of a deviation from the desired interval by a pulsed spark discharge |
| FR2939189A1 (en) * | 2008-12-01 | 2010-06-04 | Renault Sas | Combustion flame and inner wall contacting distance determining method for internal combustion engine, involves determining distance between flame and wall by specific relationship comprising parameters such as limit voltage and current |
-
1956
- 1956-02-01 GB GB323956A patent/GB853661A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173908A (en) * | 1985-04-17 | 1986-10-22 | Daimler Benz Ag | A device for the contactless determination of distance by means of a spark discharge |
| FR2580798A1 (en) * | 1985-04-17 | 1986-10-24 | Daimler Benz Ag | APPARATUS FOR NON-CONTACT DETERMINING DISTANCE USING ARC DISCHARGE |
| US4825037A (en) * | 1987-03-18 | 1989-04-25 | Daimler-Benz Aktiengesellschaft | Apparatus for contactless determination of a deviation from the desired interval by a pulsed spark discharge |
| FR2939189A1 (en) * | 2008-12-01 | 2010-06-04 | Renault Sas | Combustion flame and inner wall contacting distance determining method for internal combustion engine, involves determining distance between flame and wall by specific relationship comprising parameters such as limit voltage and current |
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