US1761434A - Electric switch - Google Patents
Electric switch Download PDFInfo
- Publication number
- US1761434A US1761434A US241641A US24164127A US1761434A US 1761434 A US1761434 A US 1761434A US 241641 A US241641 A US 241641A US 24164127 A US24164127 A US 24164127A US 1761434 A US1761434 A US 1761434A
- Authority
- US
- United States
- Prior art keywords
- contact
- plunger
- spring
- handle
- fulcrum
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
- H01H15/02—Details
- H01H15/06—Movable parts; Contacts mounted thereon
- H01H15/16—Driving mechanisms
- H01H15/18—Driving mechanisms acting with snap action
Definitions
- My invention relates to electricswitches and in accordance with' one feature thereof, a contact member is7s'pring pressed into nor- -mally'permanent engagement with a circuit terminal to constitute an electrical continuation of such-terminal, this contact member being movable into and out of engagement with a complemental contact or terminal.
- a fulcrum is provided for such contact member andmeans are employed for relatively shifting the fulcrum and the place 4 of contacting engagement of the contact member whereby the circuit opening and closing. movements'of the contact member may be .rapidly effected.
- Fig. 1 is a vertical sectional View illustrating a'form of the invention, showingthe switch in a circuit opening adjustment
- Fig. 2 is a sectional view on line 2-2 of Fig. 1
- Fig. 3 is a plan view showing a mounting panel in section
- Fig. 4 is aview similar to Fig. 3 but showing thecasing in section and parts broken away
- Fig. 5 is a sectional view on line 5- 5 of Fig. 1
- Fig. 6 is a view, partially in section and partially in elevation, showing the switch in a circuit closing adjustment.
- the switch structure illustrated includes a casing 1 which is fixed upon the inner end of an exteriorly threaded bushing 2 which is held in place by means of nuts 3 and 4 screwed thereon and between which the dash board 3 or other mounting is clamped.
- the casing 1 is of inverted cup shape, the lower end of the casing beingclosed by a disc 6 of insulation.
- the circuit wires 7 and 8 are suitably connected with circuit terminals.
- the circuit terminal with which the wire7 is connected includes a metallic post 9-pass ing through the disc 6 and having flanges 10 and 11 uponitsends and between which the disc is tightly received, a binding screw 12 for clampingthe wire in place, and'the metallic leaf extension 13.
- Said leaf extension has a cup shapedportion 13' constituting a socket which receives the outer end of the metallic contact plunger 14 whose outer end,
- the spring barrel is desirably mounted in a carrier 21 of insulatiom-this carrier being enlarged at its upper end to receive the lower and rounded edge of a rectangular fulcrum plate 22 whose top edge engages the top of the casing 1 which holds this platefrom rotation.
- the fulcrum is shifted by the stem 23 of' a.
- fulcrum "and handle stem are desirably assembled by providing the stem with a peripheral "annular groove 25that receives the fulcrum plate, the fulcrum plate, itself, being formed with a slot 26 which receives the handle stem said plunger contact may readily be bodlly turned.
- the plunger conin the zone of the groove 25.
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Description
June 3, 1930. H. A. DOUGLAS 1,761,434
ELECTRIC SWITCH Filed Dec. 21, 1927 Patented June 3, 1930 UNITED, STATES PATENT OFFICE -H.ARRY A. DOUGLAS, OF BRONSQN, MICHIGAN ELECTRIC swrrcn application filed December 21, 1927. Serial No.%1,641.
. My invention relates to electricswitches and in accordance with' one feature thereof, a contact member is7s'pring pressed into nor- -mally'permanent engagement with a circuit terminal to constitute an electrical continuation of such-terminal, this contact member being movable into and out of engagement with a complemental contact or terminal.
In accordance with another feature of the invention, a fulcrum is provided for such contact member andmeans are employed for relatively shifting the fulcrum and the place 4 of contacting engagement of the contact member whereby the circuit opening and closing. movements'of the contact member may be .rapidly effected.
The invention will be more fully explained in 'connection with the accompanying drawing in which Fig. 1 is a vertical sectional View illustrating a'form of the invention, showingthe switch in a circuit opening adjustment; Fig. 2 is a sectional view on line 2-2 of Fig. 1; Fig. 3 is a plan view showing a mounting panel in section; Fig. 4 is aview similar to Fig. 3 but showing thecasing in section and parts broken away; Fig. 5 is a sectional view on line 5- 5 of Fig. 1; and Fig. 6 is a view, partially in section and partially in elevation, showing the switch in a circuit closing adjustment.
The switch structure illustrated includes a casing 1 which is fixed upon the inner end of an exteriorly threaded bushing 2 which is held in place by means of nuts 3 and 4 screwed thereon and between which the dash board 3 or other mounting is clamped. The casing 1 is of inverted cup shape, the lower end of the casing beingclosed by a disc 6 of insulation. The circuit wires 7 and 8 are suitably connected with circuit terminals.
The circuit terminal with which the wire7 is connected includes a metallic post 9-pass ing through the disc 6 and having flanges 10 and 11 uponitsends and between which the disc is tightly received, a binding screw 12 for clampingthe wire in place, and'the metallic leaf extension 13. Said leaf extension has a cup shapedportion 13' constituting a socket which receives the outer end of the metallic contact plunger 14 whose outer end,
is rounded to conform to the shape of said socket whereb tact is pressed into engagement with the socket b means of the metallic coiled springspring barrel 16 whenthe wires 7 and 8 are to be connected, means being-provided for oscillating the spring barrel into and out of engagement with said flange 18. The spring barrel is desirably mounted in a carrier 21 of insulatiom-this carrier being enlarged at its upper end to receive the lower and rounded edge of a rectangular fulcrum plate 22 whose top edge engages the top of the casing 1 which holds this platefrom rotation.
The fulcrum is shifted by the stem 23 of' a.
Changes may be made without departing from the invention.
Having thus described my invention, I claim:
1. In an electric switch, the combinatlon with. two circuit terminals; of a contact member which is inclusive of a compressible spring, a plunger contact pressed upon by the spring and having rocking engagement with oneof said circuit terminals, and a carrier for said lunger contact and spring; and a reciproca le handle having a fulcrum formation engaged by said carrier and upon which the carrier may turn in response to reciprocation of the handle, the handle being shiftable to bring the fulcrum formation thereon upon one side or the other of the place of engagement of the plunger contact and the clrcuit terminal uponwhich the plunger contact may rock, the aforesaidspring maintaining said carrier in engagement with said fulcrum formation in all positions of the handle, whereby the contact member has the final portions of its alternative movements quickly completed, the other circuit terminal being positioned to be en aged by said contact member when this memlier is in one of its alternative positions.
2. 'In an electric switch, the combination with a current conducting contact in the form of a spring barrel; of a plunger projecting from said spring barrel; 2. spring within the spring barrel and pressing outwardly upon the plunger; a, member upon which said plunger is pressed by the spring and upon which the lunger is turned, together with the spring arrel, by the spring; a contact complemental to the spring barrel contact and enga ed thereb when the latter contact is turned y the spring; and a switch handle operable upon the spring barrel and plunger to cause the same to turn and servin to separate the spring barrel contact from t e other.
3. The structure of claim 2 wherein the plunger and the member upon which the plunger turn's are current conducting contacts.
In witness. whereof, I 'hereuntosubscribe my name. HARRY A. DOUGLAS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US241641A US1761434A (en) | 1927-12-21 | 1927-12-21 | Electric switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US241641A US1761434A (en) | 1927-12-21 | 1927-12-21 | Electric switch |
Publications (1)
Publication Number | Publication Date |
---|---|
US1761434A true US1761434A (en) | 1930-06-03 |
Family
ID=22911552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US241641A Expired - Lifetime US1761434A (en) | 1927-12-21 | 1927-12-21 | Electric switch |
Country Status (1)
Country | Link |
---|---|
US (1) | US1761434A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2727956A (en) * | 1953-03-02 | 1955-12-20 | Pass & Seymour Inc | Sliding handle snap switch |
US2805298A (en) * | 1954-10-04 | 1957-09-03 | Controls Co Of America | Slide type switches |
CN102194596A (en) * | 2010-03-17 | 2011-09-21 | 罗伯特·博世有限公司 | Electric slide switch |
-
1927
- 1927-12-21 US US241641A patent/US1761434A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2727956A (en) * | 1953-03-02 | 1955-12-20 | Pass & Seymour Inc | Sliding handle snap switch |
US2805298A (en) * | 1954-10-04 | 1957-09-03 | Controls Co Of America | Slide type switches |
CN102194596A (en) * | 2010-03-17 | 2011-09-21 | 罗伯特·博世有限公司 | Electric slide switch |
US20110226596A1 (en) * | 2010-03-17 | 2011-09-22 | Guenter Lohr | Electric slide switch |
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