FR797755A - Helical groove contact roller - Google Patents

Helical groove contact roller

Info

Publication number
FR797755A
FR797755A FR797755DA FR797755A FR 797755 A FR797755 A FR 797755A FR 797755D A FR797755D A FR 797755DA FR 797755 A FR797755 A FR 797755A
Authority
FR
France
Prior art keywords
contact roller
helical groove
groove contact
helical
roller
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
Other languages
French (fr)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR797755A publication Critical patent/FR797755A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/24—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a non-rotatable moving part
FR797755D 1934-03-20 1935-01-31 Helical groove contact roller Expired FR797755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US716465A US2111117A (en) 1934-03-20 1934-03-20 Perforated record controlled machine

Publications (1)

Publication Number Publication Date
FR797755A true FR797755A (en) 1936-05-04

Family

ID=24878089

Family Applications (1)

Application Number Title Priority Date Filing Date
FR797755D Expired FR797755A (en) 1934-03-20 1935-01-31 Helical groove contact roller

Country Status (4)

Country Link
US (1) US2111117A (en)
DE (1) DE616690C (en)
FR (1) FR797755A (en)
GB (1) GB453861A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014092A (en) * 1957-04-30 1961-12-19 Teletype Corp High speed reversible tape reader
NL244983A (en) * 1958-11-03
US3316519A (en) * 1963-11-12 1967-04-25 Boeing Co Water cooled and lubricated electrical slip rings
US3321591A (en) * 1965-04-05 1967-05-23 Fma Inc Punched card reader

Also Published As

Publication number Publication date
US2111117A (en) 1938-03-15
DE616690C (en) 1935-08-02
GB453861A (en) 1936-09-21

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