GB588296A - An improved comparator for measuring diameters - Google Patents
An improved comparator for measuring diametersInfo
- Publication number
- GB588296A GB588296A GB841944A GB841944A GB588296A GB 588296 A GB588296 A GB 588296A GB 841944 A GB841944 A GB 841944A GB 841944 A GB841944 A GB 841944A GB 588296 A GB588296 A GB 588296A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stylus
- arm
- movement
- carriage
- work
- 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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
588,296. Linear-dimension gauges. COVENTRY GAUGE & TOOL CO., Ltd., and HARLEY, S. J. May 4, 1944, No. 8419. [Class 106 (ii)] A machine for measuring diameters comprises a work-table adapted to be accurately rotated through 180 degrees, a carriage slidable in a plane parallel with the work-table and carrying a stylus, means for measuring the movement of the stylus and means for diametrically aligning the work-piece with respect to the line of movement of the stylus. The work-table 2 is adjustable vertically by a hand wheel 24, Fig. 3, secured to a threaded spindle 23 co-operating with a nut 22 secured to an axially slidable sleeve 12 carrying the table. Graduations are provided on a guide bar 26 and also on the hand wheel 24. The whole table and support plate assembly 14 are adjustable at right angles to the movement of a carriage 4, Figs. 1 and 3, by a hand wheel 36 operating through a screw 35 on a traversing bar 31, which supports the plate assembly and slides in a groove 33. The work-table is rotatable through 180 degrees, this movement being limited by a stop plate 16, adjustable by a screw 20. The table is formed with a diametral slot so that the stylus may lie in the plane of the table. The stylus 3, which is interchangeable, is supported in an arm 47, incorporating a spirit-level 66, which is resiliently connected to a cradle 49 by horizontal spring plates 48. Relative movement can be prevented by trapping a rearwardly extending arm 58 on the stylus arm 47 between anvils 55, 56, one of which 56 is adjustable by a hand wheel 57. In an alternative arrangement, the locking means co-operates with a lug extending laterally from the stylus arm. In both cases the locking means can be swung into an inoperative position, allowing upward movement of the arm 47, a ratchet 60 being used to hold the arm when lifted. The cradle 49 is resiliently supported in the sliding carriage 4 by vertical spring plates 50, thus allowing fore-and-aft movement which, however, is checked by a fiducial indicator 74, Fig. 9, engaging an anvil 52 on the cradle. A lug 78, mounted eccentrically on a rotatable spindle 77, can be engaged with a spring 76 attached to the cradle to bias the latter towards the fiducial indicator when measuring external diameters. The slidably-mounted carriage 4 comprises a micrometer screw 41, Fig. 1, either of the rotatable or non-rotatable type, held in engagement with a stationary adjustable anvil 42 by a weight 45. Gauge blocks may be inserted between: the anvil 42 and the micrometer screw 41. To dampen the movements of the stylus, an arm 70 attached to the member 47 carries a paddle 68 which is immersed in a container of liquid 71. In another embodiment, a microscope 86, Fig. 13, is used in conjunction with a glass scale 85 fixed to the sliding carriage 4 which is moved by a rack-and-pinion arrangement. A spindle 82 can be thrust against a spring 84 to engage an eccentrically-mounted pulley 80 with the cable 83 supporting the weight 45. Then, by rotating the spindle 82 certain amounts, the weight can be arranged to pull the carriage in either direction according to whether internal or external diameters are being measured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB841944A GB588296A (en) | 1944-05-04 | 1944-05-04 | An improved comparator for measuring diameters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB841944A GB588296A (en) | 1944-05-04 | 1944-05-04 | An improved comparator for measuring diameters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB588296A true GB588296A (en) | 1947-05-20 |
Family
ID=9852157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB841944A Expired GB588296A (en) | 1944-05-04 | 1944-05-04 | An improved comparator for measuring diameters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB588296A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102278929A (en) * | 2011-06-30 | 2011-12-14 | 深圳市帕玛精品制造有限公司 | Watch earhole measuring instrument |
CN110230970A (en) * | 2019-07-20 | 2019-09-13 | 成都飞机工业(集团)有限责任公司 | A kind of variable-diameter check device |
CN111397465A (en) * | 2019-12-27 | 2020-07-10 | 国网浙江省电力有限公司金华供电公司 | Wire model specification caliber |
CN112361919A (en) * | 2020-11-23 | 2021-02-12 | 莫东强 | Automobile exhaust pipe muffler detection device |
-
1944
- 1944-05-04 GB GB841944A patent/GB588296A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102278929A (en) * | 2011-06-30 | 2011-12-14 | 深圳市帕玛精品制造有限公司 | Watch earhole measuring instrument |
CN102278929B (en) * | 2011-06-30 | 2013-01-02 | 深圳市帕玛精品制造有限公司 | Watch earhole measuring instrument |
CN110230970A (en) * | 2019-07-20 | 2019-09-13 | 成都飞机工业(集团)有限责任公司 | A kind of variable-diameter check device |
CN111397465A (en) * | 2019-12-27 | 2020-07-10 | 国网浙江省电力有限公司金华供电公司 | Wire model specification caliber |
CN111397465B (en) * | 2019-12-27 | 2022-04-26 | 国网浙江省电力有限公司金华供电公司 | Wire model specification caliber |
CN112361919A (en) * | 2020-11-23 | 2021-02-12 | 莫东强 | Automobile exhaust pipe muffler detection device |
CN112361919B (en) * | 2020-11-23 | 2022-04-22 | 哈尔滨艾瑞排放控制技术股份有限公司 | Automobile exhaust pipe muffler detection device |
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