GB580516A - Improvements in bedding stones - Google Patents
Improvements in bedding stonesInfo
- Publication number
- GB580516A GB580516A GB2038444A GB2038444A GB580516A GB 580516 A GB580516 A GB 580516A GB 2038444 A GB2038444 A GB 2038444A GB 2038444 A GB2038444 A GB 2038444A GB 580516 A GB580516 A GB 580516A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- solvent
- binder
- thermosetting
- finely
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/14—Maintenance of current collectors, e.g. reshaping of brushes, cleaning of commutators
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
A stone, from which a mild and finely-divided scouring-powder such as flint, pumice, quartz sand, or calcined kyanite is readily released at the contact surfaces between the commutator and brushes of electric machines to bed the parts without any substantial abrasion of the metal either during or after detachment, is formed by bonding the powder with a relatively small amount, e.g., five per cent., of a thermosetting synthetic resin or with a thermoplastic material which will not soften or melt during use. The powder is mixed with a solution of the binder, the solvent is completely or partially removed, the mass is finely pulverized, pressed to shape, and heated to about 200 DEG C. to remove any residual solvent and, if necessary, to harden the binder. Phenol-formaldehyde resin, with methylated spirit as solvent, and cellulose acetate without plasticizers, are specified as thermosetting and thermoplastic binders respectively.ALSO:A stone from which a mild and finely-divided scouring powder such as flint, pumice, quartz sand, or calcined kyanite is readily released at the contact-surfaces between the commutator and brushes of electric machines to bed the parts without any substantial abrasion of the metal either during or after detachment, is formed by bonding the powder with a relatively small amount, e.g., 5 per cent., of a thermosetting synthetic resin or with a thermoplastic material which will not soften or melt during use. The powder is mixed with a solution of the binder, the solvent is completely or partially removed, the mass is finely pulverized, pressed to shape, and heated to about 200 DEG C. to remove any residual solvent and, if necessary, to harden the binder. Phenol-formaldehyde resin, with methylated spirit as solvent, and cellulose acetate without plasticizers, are specified as thermosetting and thermoplastic binders respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2038444A GB580516A (en) | 1944-10-20 | 1944-10-20 | Improvements in bedding stones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2038444A GB580516A (en) | 1944-10-20 | 1944-10-20 | Improvements in bedding stones |
Publications (1)
Publication Number | Publication Date |
---|---|
GB580516A true GB580516A (en) | 1946-09-10 |
Family
ID=10145065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2038444A Expired GB580516A (en) | 1944-10-20 | 1944-10-20 | Improvements in bedding stones |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB580516A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2126600A (en) * | 1982-09-01 | 1984-03-28 | Unilever Plc | Scouring cleaning compositions |
-
1944
- 1944-10-20 GB GB2038444A patent/GB580516A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2126600A (en) * | 1982-09-01 | 1984-03-28 | Unilever Plc | Scouring cleaning compositions |
EP0104679A2 (en) * | 1982-09-01 | 1984-04-04 | Unilever N.V. | Abrasive agglomerates for use in scouring cleaning compositions |
EP0104679A3 (en) * | 1982-09-01 | 1986-01-02 | Unilever Nv | Abrasive agglomerates for use in scouring cleaning compositions |
TR22424A (en) * | 1982-09-01 | 1987-05-18 | Unilever Nv | CLEANING AGLOMERAS FOR USE IN CLEANING CLEANING COMPOUNDS |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES375385A1 (en) | Fused zirconia-spinel abrasives and articles made therewith | |
GB580516A (en) | Improvements in bedding stones | |
GB889229A (en) | Magnetic abrasive wheels, method of making them and machine tools for using them | |
US2070734A (en) | Process of manufacturing grinding tools | |
GB1071364A (en) | Abrasive article | |
GB976248A (en) | An abrasive article of manufacture | |
ES204507A3 (en) | A procedure for the manufacture of abrasive wheels for cutting marble, granite, artificial stone and other materials (Machine-translation by Google Translate, not legally binding) | |
US1006375A (en) | Method of polishing. | |
USD77945S (en) | Design for a toy circus wagon | |
USD154339S (en) | Design fob a juvenile vehicle | |
USD149301S (en) | Design fob a space heater casing | |
USD166544S (en) | Diamond tool for dressing grinding wheels | |
SU408764A1 (en) | ||
USD162997S (en) | Food grinder | |
GB819709A (en) | Improvements in or relating to cleaning, polishing or scouring preparations | |
SU88848A1 (en) | Method of polishing glass, crystals and metals | |
USD83161S (en) | hollett | |
SU123864A1 (en) | A method of making an abrasive tool on an organic bond | |
USD114344S (en) | Design for a hair brush or the like | |
USD143808S (en) | Design for a bottle carrier | |
GB206883A (en) | Improvements in or relating to abrading, grinding, sharpening and similar wheels, discs, "stones" and the like | |
GB406921A (en) | Improvements in or relating to grinding or abrading tools for extremely hard alloys | |
USD55817S (en) | Louis beisfeld | |
GB191412769A (en) | Improvements in Apparatus for the Treatment of Kauri and other like Gums. | |
GB536508A (en) | Abrasive wheel |