GB257364A - Improvements in or relating to friction vernier adjustment devices for the rotative elements of wireless apparatus and the like - Google Patents
Improvements in or relating to friction vernier adjustment devices for the rotative elements of wireless apparatus and the likeInfo
- Publication number
- GB257364A GB257364A GB1523825A GB1523825A GB257364A GB 257364 A GB257364 A GB 257364A GB 1523825 A GB1523825 A GB 1523825A GB 1523825 A GB1523825 A GB 1523825A GB 257364 A GB257364 A GB 257364A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- pin
- spring
- friction
- socket
- 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
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
- H03J1/14—Special arrangements for fine and coarse tuning
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
257,364. Williams, T. E. June 12, 1925. Wireless tuning - a.pparatus, adjustment devices for. - A friction vernier adjustment device for wireless apparatus &c. comprises a pivotally mounted arm carrying towards one end a rotatable roller or disc and spring means for moving the arm about its pivot to bias the friction member into contact. In one form, Fig. 1, a plate arm 1 has its ends bent to form sockets 2, 3, the socket 2 being pivotally mounted on a pin 4, and the socket 3 carrying a friction roller 13 rotatable by the vernier knob 12. A spring 8 in the socket 2 is secured at 9 to the pin 4 and also bears in a slot 10 in the bent arm 1. In another form, Fig. 3, the arm 1 is of moulded composition and the pin 4 is carried on an arm 16 secured to the bush of the instrument's main spindle. In this form the spring 8 bears at one end on a groove 10 in the moulded arm. In other modifications, the arm 1 may be forked and positioned on the pin 4 by a spring clip which may form an indicator. The vernier knob may be provided with holes to be engaged by an anti-capacity handle. The spring 8 may be mounted around the pin 4 between the arm 1 and panel 7, or around a depending portion of the arm 1, and it may comprise the means for keeping the arm on the pin. The arm 1 mav be mounted in a bushed hole in the panel with the spring located under the panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1523825A GB257364A (en) | 1925-06-12 | 1925-06-12 | Improvements in or relating to friction vernier adjustment devices for the rotative elements of wireless apparatus and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1523825A GB257364A (en) | 1925-06-12 | 1925-06-12 | Improvements in or relating to friction vernier adjustment devices for the rotative elements of wireless apparatus and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB257364A true GB257364A (en) | 1926-09-02 |
Family
ID=10055493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1523825A Expired GB257364A (en) | 1925-06-12 | 1925-06-12 | Improvements in or relating to friction vernier adjustment devices for the rotative elements of wireless apparatus and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB257364A (en) |
-
1925
- 1925-06-12 GB GB1523825A patent/GB257364A/en not_active Expired
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