GB823835A - Improvements relating to insulating cones for commutator v-rings - Google Patents
Improvements relating to insulating cones for commutator v-ringsInfo
- Publication number
- GB823835A GB823835A GB4422/58A GB442258A GB823835A GB 823835 A GB823835 A GB 823835A GB 4422/58 A GB4422/58 A GB 4422/58A GB 442258 A GB442258 A GB 442258A GB 823835 A GB823835 A GB 823835A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ribbon
- mandrel
- insulating
- rings
- commutators
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/006—Structural associations of commutators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
Abstract
823,835. Moulding insulating cones for commutators. FIBRE DIAMOND. Feb. 11, 1958 [Feb. 11, 1957 ; Nov. 29, 1957], No. 4422/58. Class 87(2). [Also in Groups VIII and XXXV] An insulating cone for the V-rings of commutators is made of a plurality of spirally arranged turns 1, 2; 3 of insulating material which are of generally V-shaped section and are adhesively secured together. The insulating material may be a bias textile ribbon of asbestos or glass fibre base previously impregnated with a synthetic resin, an oxidisable oil or mineral glue. The ends of the ribbon may be cut on the bias before use. In one device for forming the cone, Fig. 5, the ribbon is fed between the outer periphery of a rotating mandrel 6 and a knurled roller (not shown) which bears against it: so that it is forced into the V-shaped space 14 between a profile 7 on the mandrel 6 and a profile 9 in a stationary cap 8, the cap 8 being provided with a tangential slot (not shown) for the introduction of the ribbon. In a modified method, Fig. 10, the ribbon is wound on a mandrel 6 under the knurled roller 10, as before, but it is first formed into a simple cylinder which is then forced into the required shape after heating by hot-air jets 22 by means of a composite die 16, 17 and then cooled by cold air passing through ducts 23 in the mandrel 6. In a modification, a triple die is used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR823835X | 1957-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB823835A true GB823835A (en) | 1959-11-18 |
Family
ID=9281554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4422/58A Expired GB823835A (en) | 1957-02-11 | 1958-02-11 | Improvements relating to insulating cones for commutator v-rings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB823835A (en) |
-
1958
- 1958-02-11 GB GB4422/58A patent/GB823835A/en not_active Expired
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