US2540336A - Electric snap switch - Google Patents

Electric snap switch Download PDF

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Publication number
US2540336A
US2540336A US6131A US613148A US2540336A US 2540336 A US2540336 A US 2540336A US 6131 A US6131 A US 6131A US 613148 A US613148 A US 613148A US 2540336 A US2540336 A US 2540336A
Authority
US
United States
Prior art keywords
switch
snap switch
contact
rod
spring tongue
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 - Lifetime
Application number
US6131A
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English (en)
Inventor
Kaser Albert
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Application granted granted Critical
Publication of US2540336A publication Critical patent/US2540336A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs

Definitions

  • the present invention relates to an improved electric switch of the type having a contact member which moves through a relatively short path of travel in actuation of the switch.
  • the invention consists in the novel parts, constructions, arrangements, combinations, and improvements herein shown and described.
  • the present invention has for its object the provision of an electric switch of the type having a movable contact member which has a relatively short travel in which the contact tilts without the employment of a magnet and the movable, system for the contact has but two bearing points. Another object is the provision of such an improved 2 down and is provided the connection of a conductor. At the other end of the bar or strip 4 there is mounted an angle piece 8 longitudinally adjustable with respect thereto by means of screws 1.
  • Angle-shaped notches 9 and ID in the lug 5 and angle piece 8 respectively form bearing points for the movable system of the switch.
  • This movable system itself consists of a leaf shaped tilting element lli2 of resilient, spring material, which comprises a portion ll stiffened by means of bent up flanges it along longitudinal edges thereof, and'a spring tongue II.
  • This spring tongue is formed as a cut out part of and surrounded by the stiffened portion 1 I. By means of one end of the stiffened part I l and the free end of the spring tongue II, the tilting element is inserted between the bearing points 9- by proviously stressing the spring tongue.
  • FIG. 1 is a side elevation, certain parts being shown in section, of an illustrative embodiment of installation for use in houses.
  • the contact member ll lies onposite a fixed contact II, which is mounted by means of an insulating bush l8 in the bar or strip I and to which a second-conductor can be connected by means of a nut l9.
  • the rod 2 is formed at its upper end into an eye which surrounds the rod or strip 4 and the stifiened part of the leaf-shaped tilting element ll--l2 and by means of an adjustable insulating pin 2
  • 2 up to the dead point thereof has the result that when the rod 2 by reason of the rising of the temperature in the boilermoves upwards, by the decrease in the pressure exerted by the insulating pin 29, the force of the spring tongue allows the tilting element to spring suddently back again, whereby the contact member II is dragged away from the part ll. 1
  • the switch according to the invention is of the greatest possible simplicity, since it has the minimum number of bearing points, which are theoretically necessary for switches having a tilting action, and since the movable system of the switch consists of a single piece, whereby the manufacture and assembly are simplified as compared with the known switches of this kind.
  • the tilting element in operative combination with the insulating pin 2
  • the switch is assumed to be a single pole on-and-oi! switch. It can obviously also be made with a plurality of poles.
  • the switch can also be made 3 as a change-over switch, in which case the abutsite to afnbntrolling pin likewise connected to the rod 3;; Inithis case the tilting element would thustiltover the dead point at each switching motion.
  • the invention is in no way confined to an immersion thermostat, since the invention can be employed universally on electric switches, wheife it is desired to keep the travel of the movable contact small. It can also be employed in combination with a switch that remains in the closedposition after the being switched on and has-to be opened by hand.
  • the fundamental arfangement of the parts; of the switch proper can. tljen be the same as in the example of construction, only instead of the abutment II a lever or the like must be provided, which, when actuated by hand, permits the return of the til ing element over the dead point.
  • An electric switch comprising, in combination, a longitudinally extending strip element made of resilient material stiflened along the length thereof, a movable contact carried adjacent one end of said element, said element being formed with an integral, spring tongue portion having a free end toward said contact and intermediate the ends of said element, and a pair of fixed, opposed bearing points loosely engaging said free end of said tongue portion and the end of said element opposite said contact said element being in a condition of stress between said points.
  • An electric switch comprising, in combination, a longitudinally extending resilient strip element having stiffened longitudinal edges extending substantially the entire length of said element, a movable contact carried adjacent one end of said element, said element being formed with an integral, cut-out spring tongue portion having a free end toward said contact and intermediate the ends of said element, and a pair of fixed, opposed bearing points loosely engaging said free end of said tongue portion and the end of said element opposite said contact said element being in a condition of stress between said points.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Push-Button Switches (AREA)
US6131A 1939-04-19 1948-02-04 Electric snap switch Expired - Lifetime US2540336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH551851X 1939-04-19

Publications (1)

Publication Number Publication Date
US2540336A true US2540336A (en) 1951-02-06

Family

ID=4519687

Family Applications (1)

Application Number Title Priority Date Filing Date
US6131A Expired - Lifetime US2540336A (en) 1939-04-19 1948-02-04 Electric snap switch

Country Status (6)

Country Link
US (1) US2540336A (xx)
BE (1) BE438170A (xx)
DE (1) DE756796C (xx)
FR (1) FR862910A (xx)
GB (1) GB551851A (xx)
NL (1) NL53613C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896041A (en) * 1957-05-17 1959-07-21 Dormeyer Corp Switch

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL53613C (xx) * 1939-04-19
BE472705A (xx) * 1946-07-23
DE969041C (de) * 1953-12-25 1958-04-24 Stotz Kontakt Gmbh Elektrischer Regel-Schnappschalter
DE1128511B (de) * 1954-05-29 1962-04-26 Bosch Gmbh Robert Elektrische Schaltvorrichtung, insbesondere fuer Kuehlmaschinen
DE1137496B (de) * 1959-04-09 1962-10-04 Erich Kieback Dr Ing Thermostat mit Fuehlstab
US4400679A (en) * 1981-09-21 1983-08-23 Therm-O-Disc, Incorporated Snap acting switch for thermostats
DE3150210C2 (de) * 1981-12-18 1983-11-03 Sds-Elektro Gmbh, 8024 Deisenhofen Elektrischer Schnappschalter
DE3705261A1 (de) * 1987-02-19 1988-09-01 Ego Elektro Blanc & Fischer Temperaturbegrenzer
DE3705260A1 (de) * 1987-02-19 1988-09-01 Ego Elektro Blanc & Fischer Temperaturbegrenzer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1215665A (en) * 1915-04-05 1917-02-13 Heinrich Landis Spring arrangement especially for contact devices.
US1622721A (en) * 1925-12-07 1927-03-29 Arley U Hook Electric thermostatic switch
US1694569A (en) * 1925-09-14 1928-12-11 Arthur E Walsh Switch
US2113495A (en) * 1936-03-12 1938-04-05 Richmond Thomas Guthrig Thermostatic switch
US2198428A (en) * 1936-11-05 1940-04-23 Salford Electrical Instr Ltd Snap action mechanism
GB551851A (en) * 1939-04-19 1943-03-12 Landis & Gyr Ag Improvements in or relating to snap-action electric switches
US2343060A (en) * 1941-09-25 1944-02-29 Gen Motors Corp Switch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695103A (en) * 1927-05-16 1928-12-11 Arley U Hook Thermoelectric switch
US1960020A (en) * 1933-03-29 1934-05-22 Burgess Lab Inc C F Snap switch
US2079282A (en) * 1935-11-04 1937-05-04 Trumbull Electric Mfg Co Electric switch
GB486116A (en) * 1935-12-04 1938-05-30 Burgess Lab Inc C F Improvements in or relating to snap action electric switches

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1215665A (en) * 1915-04-05 1917-02-13 Heinrich Landis Spring arrangement especially for contact devices.
US1694569A (en) * 1925-09-14 1928-12-11 Arthur E Walsh Switch
US1622721A (en) * 1925-12-07 1927-03-29 Arley U Hook Electric thermostatic switch
US2113495A (en) * 1936-03-12 1938-04-05 Richmond Thomas Guthrig Thermostatic switch
US2198428A (en) * 1936-11-05 1940-04-23 Salford Electrical Instr Ltd Snap action mechanism
GB551851A (en) * 1939-04-19 1943-03-12 Landis & Gyr Ag Improvements in or relating to snap-action electric switches
US2343060A (en) * 1941-09-25 1944-02-29 Gen Motors Corp Switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896041A (en) * 1957-05-17 1959-07-21 Dormeyer Corp Switch

Also Published As

Publication number Publication date
BE438170A (xx)
FR862910A (fr) 1941-03-19
NL53613C (xx)
DE756796C (de) 1952-04-21
GB551851A (en) 1943-03-12

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