GB545992A - Ratchet operated step-by-step mechanism - Google Patents
Ratchet operated step-by-step mechanismInfo
- Publication number
- GB545992A GB545992A GB10817/40A GB1081740A GB545992A GB 545992 A GB545992 A GB 545992A GB 10817/40 A GB10817/40 A GB 10817/40A GB 1081740 A GB1081740 A GB 1081740A GB 545992 A GB545992 A GB 545992A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- wheel
- ratchet
- star
- push
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H31/00—Other gearings with freewheeling members or other intermittently driving members
- F16H31/003—Step-by-step mechanisms for rotary motion
- F16H31/005—Step-by-step mechanisms for rotary motion with pawls driven by a reciprocating or oscillating transmission member
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/26—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand
- H03J5/30—Tuning circuits or elements supported on a revolving member with contacts arranged in lines parallel to the axis
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
545,992. Ratchet gearing. PHILCO RADIO & TELEVISION CORPORATION. June 24, 1940, No. 10817. Convention date, July 25, 1939. [Class 80 (iii)] [Also in Groups XL and XXXVII] Two shafts are connected together and with a push-button device by ratchet devices so as to rotate simultaneously one step at a time every time the push-button is operated; one shaft is intended to control switches for tuning a radio receiver and the other shaft to control an indicator. The push-button member 31 extends from a slidable member 26 controlled by a. spring 32. A resilient finger 35 is attached by a rivet 36 to the slidable member 26 and acts as a pawl in relation to bent out lugs 24 acting as ratchet teeth on a star-wheel 23 keyed to a shaft 22. The star-wheel 23 co-operates with a flange 45 at one end of a sliding bar 21 controlled by a spring 42, so that the bar is reciprocated at every step of the star-wheel. The other end of the sliding bar 21 has a fork 47, 48 cooperating with a ratchet wheel 19 on the shaft 16, so that each reciprocation of the bar causes a step rotation of the shaft. The shaft 16 carries switch sections for tuning radio receivers in known manner. The shaft 22 carries a tuning indicator, which may be as described in Specification 542,806, [Group XXXVIII]. The arrangement and use of this mechanism in a radio receiver is described in Specification 545,993, [Group XL].
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US545992XA | 1939-07-25 | 1939-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB545992A true GB545992A (en) | 1942-06-23 |
Family
ID=21992207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10817/40A Expired GB545992A (en) | 1939-07-25 | 1940-06-24 | Ratchet operated step-by-step mechanism |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB545992A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1225934B (en) * | 1962-08-09 | 1966-09-29 | Steeper Hugh Ltd | Ratchet mechanism |
DE1775706B1 (en) * | 1968-09-12 | 1972-06-08 | Holzer & Co Kg W | PROGRAM-CONTROLLED STEP CONTROL UNIT |
-
1940
- 1940-06-24 GB GB10817/40A patent/GB545992A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1225934B (en) * | 1962-08-09 | 1966-09-29 | Steeper Hugh Ltd | Ratchet mechanism |
DE1775706B1 (en) * | 1968-09-12 | 1972-06-08 | Holzer & Co Kg W | PROGRAM-CONTROLLED STEP CONTROL UNIT |
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