GB545992A - Ratchet operated step-by-step mechanism - Google Patents

Ratchet operated step-by-step mechanism

Info

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
Application number
GB10817/40A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Publication of GB545992A publication Critical patent/GB545992A/en
Expired legal-status Critical Current

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].
GB10817/40A 1939-07-25 1940-06-24 Ratchet operated step-by-step mechanism Expired GB545992A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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