US2155244A - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
US2155244A
US2155244A US49931A US4993135A US2155244A US 2155244 A US2155244 A US 2155244A US 49931 A US49931 A US 49931A US 4993135 A US4993135 A US 4993135A US 2155244 A US2155244 A US 2155244A
Authority
US
United States
Prior art keywords
circuit closer
handle
terminals
circuit
switch
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
US49931A
Inventor
Robert F Sambleson
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority to DEA76417D priority Critical patent/DE664792C/en
Priority to US47299A priority patent/US2101115A/en
Priority to US47801A priority patent/US2101093A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to US49930A priority patent/US2142152A/en
Priority to US49927A priority patent/US2142153A/en
Priority to US49943A priority patent/US2047931A/en
Priority to US49931A priority patent/US2155244A/en
Priority to US49928A priority patent/US2073529A/en
Priority to US49929A priority patent/US2142151A/en
Priority to US63527A priority patent/US2153000A/en
Priority to US70063A priority patent/US2142154A/en
Priority to DEA80870D priority patent/DE674913C/en
Priority to DEA80869D priority patent/DE670428C/en
Priority to FR830093D priority patent/FR830093A/en
Priority to GB29459/36A priority patent/GB471087A/en
Priority to GB29773/36A priority patent/GB462527A/en
Priority to GB31312/36A priority patent/GB467068A/en
Priority to GB31314/36A priority patent/GB466258A/en
Priority to GB31313/36A priority patent/GB466257A/en
Priority to DEA81982D priority patent/DE682879C/en
Priority to US185175A priority patent/US2142156A/en
Application granted granted Critical
Publication of US2155244A publication Critical patent/US2155244A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/08—Continuous flange rings; Arrangement of recesses enabling the flange rings to be slipped over the rim body
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
    • H01H29/24—Switches having at least one liquid contact operated by tilting contact-liquid container wherein contact is made and broken between liquid and liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/477—Fusion bond, e.g., weld, etc.

Definitions

  • the present invention relates to electric switches of the type having liquid contact circuitclosers for controlling the flow of current.
  • the object of my invention is to provide an improved construction and arrangement in a switch of this type, and for a consideration of what I believe to be novel and my invention attention is directed to the accompanying description and the claims appended thereto.
  • Fig. l is a sectional side elevation of, a switch embodying my invention
  • Fig. 2 is a sectional view taken on line 22 of Fig. 1
  • Fig. 3 is a diagrammatic view showing the construction and operation of the liquid contact circuit closer.
  • a liquid contact circuit closer having a pair of cup-shaped metal terminals I which are separated by an insulating diaphragm 2 of refractory material, such as a ceramic material.
  • the edges of the terminals are sealed by a head 3 of glass which also seals the junctions between the diaphragm and the terminals.
  • a suitable quantity of mercury 4 which forms the conduction medium between the terminals.
  • the space enclosed by the terminals is evacuated and filled with hydrogen at a pressure of one or more atmospheres which increases the current interrupting capacity of the circuit closer. As shown by the full lines in Fig.
  • the diaphragm 2 is provided with an opening 5 which is submerged in the mercury when the circuit closer is in the current conductmg position.
  • the opening 5 is above the mercury, and the circuit between the terminals is therefore broken or interrupted by the insulating diaphragm '2. Due to the construction of the circuit closer, the interruption of the circuit between the'terminals takes place in the mercury as the circuit closer is turned so that the opening 5 in the diaphragm approaches the dotted line position.
  • the above described construction is 11- lustrative of a type of liquid contact circuit closer which is suitable for use in a switch embodyingmy invention.
  • a handle 6 of moldedthermoplastic material having forked ends I which envelope more than half the periphery of-the circuit closer.
  • One of the forked ends I is provided with projections 8 on opposite sides which fit 5 within recesses e in the terminals of the circuit by the resilience of the forked ends.
  • the grip- 5 ping of the handle is increased by the shrinking of the material of the handle upon cooling so that after the handle has cooled, the circuit closer is tightly ri ed. by the handle.
  • the handle is shaped to conform with the outer 10 surface of the circuit closer and is provided with a groove Illwhich fits over the bead 3 and prevents sidewise displacement of the handle relative tothe circuit closer.
  • the circuit closer is mounted within a housing 15 I l of molded insulating material having side walls l2 in which are molded tubular inserts l3. 0n the inner ends of these inserts are fixed contacts it having a plurality of flexible contact arms i5. In the outer end of the inserts are threaded 2o binding screws I6 which clamp the line conductors to the inserts.
  • the circuit closer is assembled in the housing by sliding between the contacts H. In this position the flexible contact fingers i5 frictionally engage the outer surface of the ter- 25 minals i and conduct electricity to the'terminals. Since a plurality of spring contact fingers l5 are provided, the contact fingers align themselves with the surfaces of the terminals and provide good electrical contact. It is also appar- 80 ent that this construction permits rotation of the liquid contact switch about its axis. The wiping action between the terminals and the contacts tends to prevent increased contact resistance.
  • the projections l8 provide sup- 40 ports for the circuitcloser and are also adapted to engage a notch 2
  • the circuit closer is held within the housing II and against the projections I8 by two curved spring strips 22 which engage the curved surfaces 23 of the handle on either side of the handle. As shown in Fig. 2, the edges of the spring strips 22' engage the sides of the handle 6 and assist in centering the handle in the housing.
  • the spring strips 22 are riveted to a support or mounting strap 24 which is secured to the top of the housing II by screws 25 threaded into inserts 26
  • the mounting strap is adapted to be secured to an outlet bqx to mount the switch therein.
  • the handle is secured to the liquid contact circuit closer and the contacts I! are secured to the inner end of the inserts l3 in the side walls of the housing.
  • the ends IQ of the spring strip II are then placed in the slots!!! in the bottom wall of the housing, and the circuit closer is inserted in the housing so that the bottom of the glass bead 3 engages the projections ll! of the spring strip l1 and the terminals I engage the contacts l4.
  • the mounting strap 24 is then secured to the top of the housing by the screws 25, thereby holding the circuit closer in place.
  • the switch is mounted in an outlet box by means of the mounting strap 24. Due to the location of the opening 5 in the diaphragm 2, the right-hand end of the mounting strap 24 should be at the top of the outlet box. When so mounted, vertical movement of the handle 6 causes the circuit closer to be rotated about its axis.
  • the opening 5 in the diaphragm 2 is submerged in the mercury, and an electric circuit is completed through the mercury between the terminals I.
  • the handle is in the lowered position, as shown in dotted lines in Fig. 3, the opening 5 is raised out of the mercury, and the circuit between the terminals I is broken.
  • the handle is resiliently held in either the raised or the lowered positions by the engagement of one of the projections l8 with the notch 2
  • a cylindrical liquid contact circuit closer and a molded handle having forked'ends of thermoplastic material partially enveloping the periphery of the circuit closer, said forked ends being resilient and the surfaces thereof engaging the circuit closer being normally, spaced apart a'less distance than the engaged surfaces on the circuit closer whereby the forked ends are forced apart by the circuit closer and the circuit closer is gripped therebetween and the handle is held thereon by the resilience of said forked ends.
  • a cylindrical liquid contact circuit closer In an electric switch, a cylindrical liquid contact circuit closer, and a molded handle having vforked ends of thermoplastic material partially enveloping the periphery of the circuit 3.
  • a cylindrical liquid contact circuit closer having cup-shaped terminals joined by a bead of sealing material, and a molded handle of thermoplastic material having a groove into which said bead fits and having forked ends partially enveloping the periphery of the terminals and in gripping relation thereto, said handle being held thereon by the resilience of said forked ends, and said circuit closer and one of the forked ends of the handle having interfltting projections and depressions.

Description

April 1939- 1 I R. F. SAMBLESONI 2,155,244
I ELECTRIC SWITCH Filed Nov. 15, 19:55
' Ihvenfior: I
' Robert E Sambleson,
. *His ttorney.
Patented Apr. 18, 1939 UNITED sTATEs ELECTRIC SWITCH Robert F. Sambleson, Bridgeport, Conn, assignor to General Electric Company, a corporation of New'York Application November 15, 1935, Serial No. 49,931
, 4 Claims.
The present invention relates to electric switches of the type having liquid contact circuitclosers for controlling the flow of current.
The object of my invention is to provide an improved construction and arrangement in a switch of this type, and for a consideration of what I believe to be novel and my invention attention is directed to the accompanying description and the claims appended thereto.
'10 In the accompanying drawing, Fig. l is a sectional side elevation of, a switch embodying my invention; Fig. 2 is a sectional view taken on line 22 of Fig. 1; and Fig. 3 is a diagrammatic view showing the construction and operation of the liquid contact circuit closer.
Referring to the drawing, I have illustrated my invention using a. liquid contact circuit closer having a pair of cup-shaped metal terminals I which are separated by an insulating diaphragm 2 of refractory material, such as a ceramic material. The edges of the terminals are sealed by a head 3 of glass which also seals the junctions between the diaphragm and the terminals. Within the space enclosed by the terminals is a suitable quantity of mercury 4 which forms the conduction medium between the terminals. In the manufacture of the circuit closer, the space enclosed by the terminals is evacuated and filled with hydrogen at a pressure of one or more atmospheres which increases the current interrupting capacity of the circuit closer. As shown by the full lines in Fig. 3, the diaphragm 2 is provided with an opening 5 which is submerged in the mercury when the circuit closer is in the current conductmg position. When the circuit closer is in the current interrupting position, shown in dotted lines in Fig. 3, the opening 5 is above the mercury, and the circuit between the terminals is therefore broken or interrupted by the insulating diaphragm '2. Due to the construction of the circuit closer, the interruption of the circuit between the'terminals takes place in the mercury as the circuit closer is turned so that the opening 5 in the diaphragm approaches the dotted line position. The above described construction is 11- lustrative of a type of liquid contact circuit closer which is suitable for use in a switch embodyingmy invention.
For operating the liquid contact circuit closer, 50 I have provided a handle 6 of moldedthermoplastic material having forked ends I which envelope more than half the periphery of-the circuit closer. One of the forked ends I is provided with projections 8 on opposite sides which fit 5 within recesses e in the terminals of the circuit by the resilience of the forked ends. The grip- 5 ping of the handle is increased by the shrinking of the material of the handle upon cooling so that after the handle has cooled, the circuit closer is tightly ri ed. by the handle. As shown in Fig. 2, the handle is shaped to conform with the outer 10 surface of the circuit closer and is provided with a groove Illwhich fits over the bead 3 and prevents sidewise displacement of the handle relative tothe circuit closer.
The circuit closer is mounted within a housing 15 I l of molded insulating material having side walls l2 in which are molded tubular inserts l3. 0n the inner ends of these inserts are fixed contacts it having a plurality of flexible contact arms i5. In the outer end of the inserts are threaded 2o binding screws I6 which clamp the line conductors to the inserts. The circuit closer is assembled in the housing by sliding between the contacts H. In this position the flexible contact fingers i5 frictionally engage the outer surface of the ter- 25 minals i and conduct electricity to the'terminals. Since a plurality of spring contact fingers l5 are provided, the contact fingers align themselves with the surfaces of the terminals and provide good electrical contact. It is also appar- 80 ent that this construction permits rotation of the liquid contact switch about its axis. The wiping action between the terminals and the contacts tends to prevent increased contact resistance.
At the bottom of the housing is a spring strip 35 the housing. The projections l8 provide sup- 40 ports for the circuitcloser and are also adapted to engage a notch 2| formed in the periphery of the glass bead 3, and thereby to hold the circuit closer resiliently in a fixed position. The circuit closer is held within the housing II and against the projections I8 by two curved spring strips 22 which engage the curved surfaces 23 of the handle on either side of the handle. As shown in Fig. 2, the edges of the spring strips 22' engage the sides of the handle 6 and assist in centering the handle in the housing. The spring strips 22 are riveted to a support or mounting strap 24 which is secured to the top of the housing II by screws 25 threaded into inserts 26 The mounting strap is adapted to be secured to an outlet bqx to mount the switch therein.
In the assembly of the switch, the handle is secured to the liquid contact circuit closer and the contacts I! are secured to the inner end of the inserts l3 in the side walls of the housing. The ends IQ of the spring strip II are then placed in the slots!!! in the bottom wall of the housing, and the circuit closer is inserted in the housing so that the bottom of the glass bead 3 engages the projections ll! of the spring strip l1 and the terminals I engage the contacts l4. The mounting strap 24 is then secured to the top of the housing by the screws 25, thereby holding the circuit closer in place.
In the use of the switch, the switch is mounted in an outlet box by means of the mounting strap 24. Due to the location of the opening 5 in the diaphragm 2, the right-hand end of the mounting strap 24 should be at the top of the outlet box. When so mounted, vertical movement of the handle 6 causes the circuit closer to be rotated about its axis. When the handle is in the raised position, shown in full lines on Fig. 3, the opening 5 in the diaphragm 2 is submerged in the mercury, and an electric circuit is completed through the mercury between the terminals I. When the handle is in the lowered position, as shown in dotted lines in Fig. 3, the opening 5 is raised out of the mercury, and the circuit between the terminals I is broken. The handle is resiliently held in either the raised or the lowered positions by the engagement of one of the projections l8 with the notch 2| in the bead 3. It is apparent that by changing the location of the opening 5 in the diaphragm 2, or by changing the positions of the notches 9 and 21 the switch can be adapted for mounting in other than vertical positions.
What I claim as new and desire to secure'by Letters Patent of the United States is:
1. In an electric switch, a cylindrical liquid contact circuit closer, and a molded handle having forked'ends of thermoplastic material partially enveloping the periphery of the circuit closer, said forked ends being resilient and the surfaces thereof engaging the circuit closer being normally, spaced apart a'less distance than the engaged surfaces on the circuit closer whereby the forked ends are forced apart by the circuit closer and the circuit closer is gripped therebetween and the handle is held thereon by the resilience of said forked ends.
2. In an electric switch, a cylindrical liquid contact circuit closer, and a molded handle having vforked ends of thermoplastic material partially enveloping the periphery of the circuit 3. In an electric switch, a cylindrical liquid contact circuit closer having cup-shaped terminals joined by a bead of sealing material, and a molded handle of thermoplastic material having a groove into which said bead fits and having forked ends partially enveloping the periphery of the terminals and in gripping relation thereto, said handle being held thereon by the resilience of said forked ends, and said circuit closer and one of the forked ends of the handle having interfltting projections and depressions.
4. In an electric switch, 'a cylindrical liquid contact circuit closer having cup-shaped terminals joined by a bead of sealing material, and a molded handle of thermoplastic material having a groove into which said bead fits and having forked ends partially enveloping the periphery of the terminals, said forked ends being resilient and the surfaces thereof engaging the circuit closer being normally spaced apart a less distance than the engaged surfaces on the circuit closer whereby the forked ends are forced apart by the circuit closer and the circuit closer is gripped therebetween and the handle is held thereon by the resilience of said forked end's.
ROBERT F. SALBLESON.
US49931A 1935-10-29 1935-11-15 Electric switch Expired - Lifetime US2155244A (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
DEA76417D DE664792C (en) 1935-10-29 1935-07-05 Liquid switch capsule
US47299A US2101115A (en) 1935-10-29 1935-10-29 Electric switch of the fluid flow type
US47801A US2101093A (en) 1935-10-29 1935-11-01 Barrier for mercury switches
US49930A US2142152A (en) 1935-10-29 1935-11-15 Electric switch
US49927A US2142153A (en) 1935-10-29 1935-11-15 Electric switch
US49943A US2047931A (en) 1935-10-29 1935-11-15 Electric switch
US49931A US2155244A (en) 1935-10-29 1935-11-15 Electric switch
US49928A US2073529A (en) 1935-10-29 1935-11-15 Electric switch
US49929A US2142151A (en) 1935-10-29 1935-11-15 Electric switch
US63527A US2153000A (en) 1935-10-29 1936-02-12 Ceramic body
US70063A US2142154A (en) 1935-10-29 1936-03-21 Electric switch
DEA80870D DE674913C (en) 1935-10-29 1936-10-27 Fluid switch capsule, which consists of two metal shells that serve as electrodes and are separated from one another by an insulating partition
DEA80869D DE670428C (en) 1935-10-29 1936-10-27 Liquid switch capsule
FR830093D FR830093A (en) 1935-10-29 1936-10-28 Improvements to mercury switches
GB29459/36A GB471087A (en) 1935-10-29 1936-10-29 Improvements in and relating to fluid flow electric switches
GB29773/36A GB462527A (en) 1935-10-29 1936-11-02 Improvements in and relating to mercury and like conducting liquid switches
GB31312/36A GB467068A (en) 1935-10-29 1936-11-16 Improvements in and relating to mercury and like conducting-liquid electric switches
GB31314/36A GB466258A (en) 1935-10-29 1936-11-16 Improvements in and relating to mercury and like conducting-liquid electric switches
GB31313/36A GB466257A (en) 1935-10-29 1936-11-16 Improvements in and relating to mercury and like conducting-liquid electric switches
DEA81982D DE682879C (en) 1935-10-29 1937-02-13 Ceramic partition for a liquid switch capsule
US185175A US2142156A (en) 1935-10-29 1938-01-15 Electric switch

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US47299A US2101115A (en) 1935-10-29 1935-10-29 Electric switch of the fluid flow type
US47801A US2101093A (en) 1935-10-29 1935-11-01 Barrier for mercury switches
US49928A US2073529A (en) 1935-10-29 1935-11-15 Electric switch
US49943A US2047931A (en) 1935-10-29 1935-11-15 Electric switch
US49930A US2142152A (en) 1935-10-29 1935-11-15 Electric switch
US49929A US2142151A (en) 1935-10-29 1935-11-15 Electric switch
US49931A US2155244A (en) 1935-10-29 1935-11-15 Electric switch
US49927A US2142153A (en) 1935-10-29 1935-11-15 Electric switch
US63527A US2153000A (en) 1935-10-29 1936-02-12 Ceramic body
US70063A US2142154A (en) 1935-10-29 1936-03-21 Electric switch

Publications (1)

Publication Number Publication Date
US2155244A true US2155244A (en) 1939-04-18

Family

ID=41402567

Family Applications (11)

Application Number Title Priority Date Filing Date
US47299A Expired - Lifetime US2101115A (en) 1935-10-29 1935-10-29 Electric switch of the fluid flow type
US47801A Expired - Lifetime US2101093A (en) 1935-10-29 1935-11-01 Barrier for mercury switches
US49931A Expired - Lifetime US2155244A (en) 1935-10-29 1935-11-15 Electric switch
US49930A Expired - Lifetime US2142152A (en) 1935-10-29 1935-11-15 Electric switch
US49927A Expired - Lifetime US2142153A (en) 1935-10-29 1935-11-15 Electric switch
US49943A Expired - Lifetime US2047931A (en) 1935-10-29 1935-11-15 Electric switch
US49929A Expired - Lifetime US2142151A (en) 1935-10-29 1935-11-15 Electric switch
US49928A Expired - Lifetime US2073529A (en) 1935-10-29 1935-11-15 Electric switch
US63527A Expired - Lifetime US2153000A (en) 1935-10-29 1936-02-12 Ceramic body
US70063A Expired - Lifetime US2142154A (en) 1935-10-29 1936-03-21 Electric switch
US185175A Expired - Lifetime US2142156A (en) 1935-10-29 1938-01-15 Electric switch

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US47299A Expired - Lifetime US2101115A (en) 1935-10-29 1935-10-29 Electric switch of the fluid flow type
US47801A Expired - Lifetime US2101093A (en) 1935-10-29 1935-11-01 Barrier for mercury switches

Family Applications After (8)

Application Number Title Priority Date Filing Date
US49930A Expired - Lifetime US2142152A (en) 1935-10-29 1935-11-15 Electric switch
US49927A Expired - Lifetime US2142153A (en) 1935-10-29 1935-11-15 Electric switch
US49943A Expired - Lifetime US2047931A (en) 1935-10-29 1935-11-15 Electric switch
US49929A Expired - Lifetime US2142151A (en) 1935-10-29 1935-11-15 Electric switch
US49928A Expired - Lifetime US2073529A (en) 1935-10-29 1935-11-15 Electric switch
US63527A Expired - Lifetime US2153000A (en) 1935-10-29 1936-02-12 Ceramic body
US70063A Expired - Lifetime US2142154A (en) 1935-10-29 1936-03-21 Electric switch
US185175A Expired - Lifetime US2142156A (en) 1935-10-29 1938-01-15 Electric switch

Country Status (4)

Country Link
US (11) US2101115A (en)
DE (4) DE664792C (en)
FR (1) FR830093A (en)
GB (5) GB471087A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415965A (en) * 1967-04-17 1968-12-10 Gen Electric Mercury button switch
US3946186A (en) * 1973-12-26 1976-03-23 The Grigoleit Company Rocker actuating mechanism

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434065A (en) * 1945-12-29 1948-01-06 Joseph F Courtney Illuminated safety switch
US2580302A (en) * 1948-01-02 1951-12-25 Vincent W Jones Fluid type switch
US2575318A (en) * 1948-01-08 1951-11-13 Minncapolis Honeyweel Regulato Mercury switch
US2578494A (en) * 1949-05-27 1951-12-11 Wiggins Harry Shaw Electric switch
US2647177A (en) * 1950-02-25 1953-07-28 Knapp Monarch Co Double break switch
US2670421A (en) * 1952-03-29 1954-02-23 Gen Electric Roll type mercury switch
US2749413A (en) * 1952-10-06 1956-06-05 Lee T Bordner Electric switch
DE1195418B (en) * 1954-05-04 1965-06-24 Henschel Werke Ag Liquid contacts, especially for large currents and sliding speeds
US2784279A (en) * 1954-08-30 1957-03-05 Gen Electric Mercury switch
US2872551A (en) * 1956-12-27 1959-02-03 Westinghouse Electric Corp Electric wiring device
US2891133A (en) * 1957-08-27 1959-06-16 Gen Electric Electric heater control assembly
DE1141358B (en) * 1958-06-02 1962-12-20 Gen Elek C Company Mercury rotary capsule switch with a partition made of insulating material in a metal housing
US2936347A (en) * 1958-10-24 1960-05-10 Cutler Hammer Inc Electric switch
US3088003A (en) * 1960-05-24 1963-04-30 Sherman S Fishman Electro-mechanical switch
CA781578A (en) * 1963-01-30 1968-03-26 L. Hamilton William Mercury button switch with horizontal handle
DE1259994B (en) * 1964-11-26 1968-02-01 Oskar Von Mossin Contact device for transmitting electrical currents between conductors which can be rotated relative to one another
US3313903A (en) * 1965-06-10 1967-04-11 Hubbell Inc Harvey Liquid contact switch for controlling plural circuits
US4144431A (en) * 1977-05-19 1979-03-13 Elenbaas George H Means of securing mecury displacement switches to a mounting bracket
US20080118878A1 (en) * 2006-11-17 2008-05-22 Banner Engineering & Sales, Inc. Combustible fuel igniting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415965A (en) * 1967-04-17 1968-12-10 Gen Electric Mercury button switch
US3946186A (en) * 1973-12-26 1976-03-23 The Grigoleit Company Rocker actuating mechanism

Also Published As

Publication number Publication date
DE670428C (en) 1939-01-18
US2047931A (en) 1936-07-14
US2101115A (en) 1937-12-07
US2142152A (en) 1939-01-03
FR830093A (en) 1938-07-20
US2153000A (en) 1939-04-04
GB466258A (en) 1937-05-25
US2142154A (en) 1939-01-03
US2142151A (en) 1939-01-03
DE664792C (en) 1938-09-12
GB466257A (en) 1937-05-25
GB467068A (en) 1937-06-10
US2101093A (en) 1937-12-07
US2073529A (en) 1937-03-09
US2142156A (en) 1939-01-03
GB471087A (en) 1937-08-27
DE674913C (en) 1939-04-25
GB462527A (en) 1937-03-10
US2142153A (en) 1939-01-03
DE682879C (en) 1939-10-23

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