GB178757A - Improvements in and relating to reversible tapping chucks - Google Patents
Improvements in and relating to reversible tapping chucksInfo
- Publication number
- GB178757A GB178757A GB1689321A GB1689321A GB178757A GB 178757 A GB178757 A GB 178757A GB 1689321 A GB1689321 A GB 1689321A GB 1689321 A GB1689321 A GB 1689321A GB 178757 A GB178757 A GB 178757A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- gear
- relating
- boss
- clutch
- 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
- 238000010079 rubber tapping Methods 0.000 title abstract 3
- 230000002441 reversible effect Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
- B23G1/46—Equipment or accessories specially designed for machines or devices for thread cutting for holding the threading tools
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/004—Halogenides of cyanogen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
178,757. John, W. N. June 20, 1921. Attachments for tapping.-Reversible tapping chucks consist of a split casing 10, secured by a screw cap 12 and ring 17. An extension 13 on the cap receives the boss 14 of an internal gear 15, a shank 16 being screwed into the-boss. Shafts 23, mounted in the casing, carry pinions 25 engaging the gear 15, and pinions 22 engaging a gear 21 loosely mounted on a shaft 20, which has axial freedom of movement and carries a clutch 26. The upward or downward pressure of a tool secured to shaft 20 engages the clutch with either of the gears 15 or 21. An arm 27 prevents rotation of the casing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1689321A GB178757A (en) | 1921-06-20 | 1921-06-20 | Improvements in and relating to reversible tapping chucks |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1689321A GB178757A (en) | 1921-06-20 | 1921-06-20 | Improvements in and relating to reversible tapping chucks |
US291355A US2781481A (en) | 1952-06-02 | 1952-06-02 | Semiconductors and methods of making same |
US294741A US2894862A (en) | 1952-06-02 | 1952-06-20 | Method of fabricating p-n type junction devices |
DE19681767004 DE1767004A1 (en) | 1952-06-02 | 1968-03-20 | Process for the production of cyanogen chloride in addition to cyanuric chloride and tetrameric cyanogen chloride |
Publications (1)
Publication Number | Publication Date |
---|---|
GB178757A true GB178757A (en) | 1922-04-27 |
Family
ID=27430703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1689321A Expired GB178757A (en) | 1921-06-20 | 1921-06-20 | Improvements in and relating to reversible tapping chucks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB178757A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103624341A (en) * | 2012-08-26 | 2014-03-12 | 朱国成 | Motorized tapping fixture |
-
1921
- 1921-06-20 GB GB1689321A patent/GB178757A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103624341A (en) * | 2012-08-26 | 2014-03-12 | 朱国成 | Motorized tapping fixture |
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