GB440222A - Improvements in or relating to secret combination electric switches, particularly for motor vehicles - Google Patents
Improvements in or relating to secret combination electric switches, particularly for motor vehiclesInfo
- Publication number
- GB440222A GB440222A GB3334934A GB3334934A GB440222A GB 440222 A GB440222 A GB 440222A GB 3334934 A GB3334934 A GB 3334934A GB 3334934 A GB3334934 A GB 3334934A GB 440222 A GB440222 A GB 440222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- conductors
- secret
- circuit
- combination
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
- H01H27/10—Switch operated by setting members according to a single predetermined combination out of several possible settings
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
440,222. Secret contact-combination switches. MILNE, J. M., 53, Calderwood Road, Rutherglen, Glasgow. March 21, 1935, No. 33349. [Class 38 (v)] A secret combination switch comprises a spindle 4 on which are loosely rotatable three insulating discs 5, each disc comprising a central raised knurled part 5<a>, a part 5b, on which is adjustably mounted a ring 8 carrying symbols, and two side extensions 5<c> which are grooved as at 6 and carry a circle of conductors 7. On each disc, only one conductor 7 passes right through the disc to connect the two grooves 6, the rest being interrupted. Mounted on the base are four metal brackets 11 which carry spring-urged contact arms 12 which engage the conductors 7. The outer brackets 11 each have one contact arm 12 and inner ones each have two. Thus when the discs are turned so that all the contact arms 12 engage the through conductors 7, a circuit is completed between the two outer brackets 11 to which the external circuit is connected. In a modification, only one conductor on each disc is interrupted, so that the circuit is broken when the combination is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3334934A GB440222A (en) | 1935-03-21 | 1935-03-21 | Improvements in or relating to secret combination electric switches, particularly for motor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3334934A GB440222A (en) | 1935-03-21 | 1935-03-21 | Improvements in or relating to secret combination electric switches, particularly for motor vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB440222A true GB440222A (en) | 1935-12-23 |
Family
ID=10351793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3334934A Expired GB440222A (en) | 1935-03-21 | 1935-03-21 | Improvements in or relating to secret combination electric switches, particularly for motor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB440222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3089923A (en) * | 1959-06-15 | 1963-05-14 | Endevco Corp | Sectional digital switch |
-
1935
- 1935-03-21 GB GB3334934A patent/GB440222A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3089923A (en) * | 1959-06-15 | 1963-05-14 | Endevco Corp | Sectional digital switch |
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