US1957666A - Double throw switch - Google Patents

Double throw switch Download PDF

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Publication number
US1957666A
US1957666A US535427A US53542731A US1957666A US 1957666 A US1957666 A US 1957666A US 535427 A US535427 A US 535427A US 53542731 A US53542731 A US 53542731A US 1957666 A US1957666 A US 1957666A
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Prior art keywords
switch
contact
double throw
throw switch
levers
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Expired - Lifetime
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US535427A
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Quante Wilhelm
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
    • H01H21/60—Change-over switches with stable intermediate position

Definitions

  • the invention relates particularly to throw over switches adapted to control a plurality of lines.
  • Throw over switches are known which are arranged side by side on a common axle. Such switches are likewise known in which the individual levers can be independently operated. Further it is known to construct the switching levers as knife contacts.
  • the invention consists in that these independently operatable switching levers are arranged side by side on a common axle and are provided with three pairs of contact knives arranged in cross-shape and engage in contact springs.
  • one pair of contact knives In order to prevent all interruption of the current ow when changing over from the main line to the branch line, one pair of contact knives, according to the invention, always remains in contact with the coordinate terminal connected to the main line irrespective of the position of the lever.
  • Fig. 1 shows the switch in top plan view.
  • Fig. 2 is a section on line 2-2 of Fig. 1.
  • Fig. 3 is a section on line 3 3 of Fig. 1.
  • the casing consists of a base a pressed from insulating material, further of a supporting plate b also pressed from insulating material, and of a cover c of insulating material. Pairs of springs d', d2 and d3 are fixed on the supporting plate b. These pairs of springs are connected to the terminals e', e2 and e3.
  • the main circuits are connected to the terminals e3, whereas lines leading to the substations are connected to the terminals e and those to the central station to the terminals e2.
  • An axle f journaled in the side walls of the base a, extends transversely through the casing.
  • the switch levers h pressed into the bearing part g are mounted side by side on this axle.
  • each of the cross-shaped contact knives are also pressed into this bearing part g.
  • the knives i, k and Z are produced by the crossshape.
  • the knife l is wide, so that it remains in contact with the contact spring d3, irrespective of the position of the lever.
  • the contact 1c engages the spring d2. Consequently, the oicial line is switched to the central station. If the lever is thrown upwards, the knife 1c disengages from the spring d2 and the knife i engages the spring d', so that the official line is switched to the branch station. If the switch lever is in the medium position, both the contact knife 1c and the contact knife i are disengaged from both contact springs, so that both the central station and also the branch station are switched out.
  • the xing of the switch levers h is eiected by screws o', o2 and o3.
  • a bar n is fixed as desired which, in the example shown interconnects all the cylinders so that, when one switch lever is moved, all the switch levers are actuated. If it is desired to actuate the two extreme cylinders or switch levers together and to leave the middle lever inoperative, the bar 1L is set oil over the middle screw o2 so that only the two extreme cylinders are rigidly connected with the screws o and o3.
  • a marking table m is arranged, which is divided into two sections, on which the position of the lever is indicated.
  • a throw over switch for a plurality of lines to be switched separately comprising in combination a common axle, independently actuated pairs of contact knives arranged in cross shape on said alxle, angular switch levers connected at one end to said pairs of contact knives, the free arms of said levers constructed in bow shape, spring clips engaging the other end of said pairs of contact knives, and an insulating board carrying said clips.

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  • Knives (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Description

May 8 1934- w. QUANTE 1,957,666
DOUBLE THROW SWITCH Filed May 6. 1931 kw 5W@ i ,www
Patented May s, 1934 UNITED STATES PATENT OFFICE DOUBLE THROW SWITCH Wilhelm Quante, Wuppertal-Elberfeld, Germany Application May 6, 1931, Serial No. 535,427 In Germany May 9, 1930 1 Claim.
The invention relates particularly to throw over switches adapted to control a plurality of lines. Throw over switches are known which are arranged side by side on a common axle. Such switches are likewise known in which the individual levers can be independently operated. Further it is known to construct the switching levers as knife contacts. The invention consists in that these independently operatable switching levers are arranged side by side on a common axle and are provided with three pairs of contact knives arranged in cross-shape and engage in contact springs. By the combination of these features it is possible to arrange all terminals as close as possible in order to enable the switch to be used for various purposes, for example as separate throw over switch, as multiple throw over switch, as collector switch, as testing switch, as line selector and the like without long connecting wires. Moreover by this arrangement the terminals are clearly visible and easily accessible.
In order to prevent all interruption of the current ow when changing over from the main line to the branch line, one pair of contact knives, according to the invention, always remains in contact with the coordinate terminal connected to the main line irrespective of the position of the lever.
An embodiment of the invention is illustrated by way of example in the accompanying drawing in which:
Fig. 1 shows the switch in top plan view.
Fig. 2 is a section on line 2-2 of Fig. 1.
Fig. 3 is a section on line 3 3 of Fig. 1.
The casing consists of a base a pressed from insulating material, further of a supporting plate b also pressed from insulating material, and of a cover c of insulating material. Pairs of springs d', d2 and d3 are fixed on the supporting plate b. These pairs of springs are connected to the terminals e', e2 and e3. The main circuits are connected to the terminals e3, whereas lines leading to the substations are connected to the terminals e and those to the central station to the terminals e2. An axle f, journaled in the side walls of the base a, extends transversely through the casing. The switch levers h pressed into the bearing part g are mounted side by side on this axle. One pair of each of the cross-shaped contact knives are also pressed into this bearing part g. The knives i, k and Z are produced by the crossshape. The knife l is wide, so that it remains in contact with the contact spring d3, irrespective of the position of the lever. The contact 1c engages the spring d2. Consequently, the oicial line is switched to the central station. If the lever is thrown upwards, the knife 1c disengages from the spring d2 and the knife i engages the spring d', so that the official line is switched to the branch station. If the switch lever is in the medium position, both the contact knife 1c and the contact knife i are disengaged from both contact springs, so that both the central station and also the branch station are switched out. The xing of the switch levers h is eiected by screws o', o2 and o3. Between screw and switch lever a bar n is fixed as desired which, in the example shown interconnects all the cylinders so that, when one switch lever is moved, all the switch levers are actuated. If it is desired to actuate the two extreme cylinders or switch levers together and to leave the middle lever inoperative, the bar 1L is set oil over the middle screw o2 so that only the two extreme cylinders are rigidly connected with the screws o and o3.
On the cover c a marking table m is arranged, which is divided into two sections, on which the position of the lever is indicated.
I claim:
A throw over switch for a plurality of lines to be switched separately, comprising in combination a common axle, independently actuated pairs of contact knives arranged in cross shape on said alxle, angular switch levers connected at one end to said pairs of contact knives, the free arms of said levers constructed in bow shape, spring clips engaging the other end of said pairs of contact knives, and an insulating board carrying said clips.
WILHELM QUANTE.
US535427A 1930-05-09 1931-05-06 Double throw switch Expired - Lifetime US1957666A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1957666X 1930-05-09

Publications (1)

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US1957666A true US1957666A (en) 1934-05-08

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US535427A Expired - Lifetime US1957666A (en) 1930-05-09 1931-05-06 Double throw switch

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US (1) US1957666A (en)
GB (1) GB369444A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3985701A4 (en) * 2019-06-15 2023-08-02 Jesús Gualdron Florez Disconnecting switchgear for electrical safety procedure and compliance with the five golden rules of electrical safety via a single switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3985701A4 (en) * 2019-06-15 2023-08-02 Jesús Gualdron Florez Disconnecting switchgear for electrical safety procedure and compliance with the five golden rules of electrical safety via a single switch

Also Published As

Publication number Publication date
GB369444A (en) 1932-03-24

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