GB649741A - Vacuum work holder - Google Patents
Vacuum work holderInfo
- Publication number
- GB649741A GB649741A GB1852748A GB1852748A GB649741A GB 649741 A GB649741 A GB 649741A GB 1852748 A GB1852748 A GB 1852748A GB 1852748 A GB1852748 A GB 1852748A GB 649741 A GB649741 A GB 649741A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gasket
- groove
- channels
- vacuum work
- calhoun
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/005—Vacuum work holders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
649,741. Vacuum work-holders. CALHOUN, O. H., and CALHOUN. A. H. July 9. 1948. No. 18527. [Class 60] [Also in Group XXVI] A vacuum work-holder, particularly for holding aluminium sheet while being machined to form thin tapered skins to be incorporated as integral parts of the wings and fuselage of airplanes, has a marginal groove 14 containing a gasket 15; a number of very small channels 18, communicating with each other and with the gasket. groove, are formed in the upper surface 12 lying within the groove 14 and also in the upper surface 12' outside the groove whereby the underside of the gasket flap communicates with atmosphere. The channels 18 may be formed by a rotary fly cutter, and the lands may be flattened by sanding, grinding or milling. Exhaust ports 25 are provided near the gasket groove 14 with which they communicate by channels 29 of greater depth than the channels 18 so that air leaking past the gasket 15 is exhausted and prevented from passing under thework and tending to loosen it. Specification 646,862 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1852748A GB649741A (en) | 1948-07-09 | 1948-07-09 | Vacuum work holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1852748A GB649741A (en) | 1948-07-09 | 1948-07-09 | Vacuum work holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB649741A true GB649741A (en) | 1951-01-31 |
Family
ID=10113957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1852748A Expired GB649741A (en) | 1948-07-09 | 1948-07-09 | Vacuum work holder |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB649741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068667A1 (en) * | 2010-11-22 | 2012-05-31 | Biocad Medical Inc. | Method and device for producing a dental component |
-
1948
- 1948-07-09 GB GB1852748A patent/GB649741A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068667A1 (en) * | 2010-11-22 | 2012-05-31 | Biocad Medical Inc. | Method and device for producing a dental component |
| US9615902B2 (en) | 2010-11-22 | 2017-04-11 | Biocad Medical Inc. | Method and device for producing a dental component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB649741A (en) | Vacuum work holder | |
| US2446295A (en) | Vacuum work holder | |
| GB604494A (en) | Improvements in, or relating to, cutting machines | |
| GB626780A (en) | Improvements relating to aerofoils and aerofoil blading | |
| GB1341674A (en) | Tool heads for use in machining timber | |
| AU144585B2 (en) | Improvements in or relating to tool driving attachments for lathes and other machine tools | |
| AU3276250A (en) | Improvements in or relating to tool driving attachments for lathes and other machine tools | |
| GB616204A (en) | Process for turning with a diamond tool | |
| GB626893A (en) | Improvements in or relating to diamond wheel dressing tools | |
| AU149188B2 (en) | improvements in or relating to facing sheet for machine sanding with coated abrasives | |
| GB683340A (en) | Improvements in cutting tools for machine tools | |
| AU3791050A (en) | improvements in or relating to facing sheet for machine sanding with coated abrasives | |
| GB636799A (en) | Improvements in or relating to tool holders for lathes and like machine tools | |
| GB662130A (en) | Improvements in and relating to woodworking cutter heads | |
| CA460120A (en) | Tool for boring and countersinking wood | |
| AU129030B2 (en) | Improvements in grinding attachments for machine tools | |
| AU3305950A (en) | Improvements in or relating to machines suitable for applying coating material to workpieces | |
| AU131945B2 (en) | Improvements relating to valves for air compressors and pneumatically operated tools | |
| AU78046A (en) | Improvements in grinding attachments for machine tools | |
| AU961947A (en) | Improvements relating to valves for air compressors and pneumatically operated tools | |
| AU123897B2 (en) | Improvements in or relating to material and tools for grinding and like processes | |
| AU139244B2 (en) | Improvements in and relating to manifolding attachments for typewriting and like machines | |
| AU134097B2 (en) | Improvements in or relating to grinding or abrading machines for use in refacing valves | |
| AU156024B2 (en) | Improvements in and relating to machine attachments for tools | |
| GB809288A (en) | Improvements in or relating to devices for grinding substantially flat workpieces, for example the slideways of machine tools |