US1662970A - Safety device for electric lines - Google Patents

Safety device for electric lines Download PDF

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Publication number
US1662970A
US1662970A US36746A US3674625A US1662970A US 1662970 A US1662970 A US 1662970A US 36746 A US36746 A US 36746A US 3674625 A US3674625 A US 3674625A US 1662970 A US1662970 A US 1662970A
Authority
US
United States
Prior art keywords
contact
safety device
casing
contact member
electric lines
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
US36746A
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English (en)
Inventor
Grosse Carl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1662970A publication Critical patent/US1662970A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/78—Preparation by contact processes characterised by the catalyst used
    • C01B17/79—Preparation by contact processes characterised by the catalyst used containing vanadium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
    • H01H73/42—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by rotatable knob or wheel

Definitions

  • Electric automatic safety devices are generally known, but hitherto in domestic 1nstallations fuses have almost exclusively been used for protecting electric lines.
  • Fig. 1 is the vertica section through the safety device according to the 1nvent1on.
  • Figs. 2 and 3 are cross sections along line A-B, seen in the direction of the arrows 2, 3.
  • Figs. 4 and 5 are cross sections on line A-B seen in the direction of the arrows 4, 5.
  • a is the casin of the safety device which is generally ma e of lnsulating material and which extends 1nto a socket which is screwed-in;
  • b is a cover with a c lindrical projecting part which is rotatab y arranged in the casing.
  • the 26 latter is extended to form a contact strip at which is arranged on the circumference of the c lindrical adjoining or rojectmg part.
  • a contact strip d is arranged which may be formed b a piece of wire leadin down to the meta part of the socket an conductively connected with it.
  • This contact strip may be covered towards the. interior -by an insulating strip i.
  • a c linder 0 formed of insulatin material an rotatable about a pin and aving a recess or cavity for receiving a tension spring f.
  • This rin f is fixed with the one end to the cylin er 0 and with the other end to a point in the casing a, for instance, by a plate 4, which is secured in the casing a against rm tation.
  • a contact disc 6 In the front side of the linder a there is fixed a contact disc 6 with a lug a. The contact disc 6 is in constant contact with the contact disc 6.
  • the lug e is extended into a contact strip d which is arranged on the circumferential face of the cylin er a.
  • This contact stri d can come in touch with the longitudin contact strip .a' in certain positions of the cylinder a, the
  • a pawl or catch 7 is rotatably mounted on a pin 0, said pawl r being influenced or actuated by a spring t and adapted to engage a recess u in the cylinder e.
  • p is a fixing pin for the spring t.
  • g is an iron core wlthin an electromagnetic coil h.
  • the latter is connected on the one side to the contact strip d and on the other side by a conductor m to a contact screw is in the socket.
  • the cylinder e is provided with a semicircular groove 1 which is enga ed by the pin a of the cover I).
  • the cover b is at first turned around 180 and during this rotary movement the pin a engaging the cove Z of the cylinder e, entrains the cylinder until the pawl or catch 1' comes into engagement under the action of the spring t, with the recess u thereby locking the cylinder 0 in such sition, in which the contact strips d an d are in contact with each other.
  • the contacts d and d are interrupted so that during the adjusting of the cy inder e the circuit remains tem rarily interrupted.
  • the electric current flows in this case as follows: k, m, h, d, d, e, e, b, b, d, d to the metal parts of the socket.
  • Fig. '1 shows the operative position of the cover and the part c, the part e being always disconnectedby excessive current without it being possible to revent this externally.
  • An automatic safety device for electric lines comprising in combination a casing of insulating material, a socket on the sai casing, a rotatable contact member in the said casing, a second rotatable contact member in the casing, a spring capable of acting on the second contact member and of turning the same when free to move, a semi-circular groove in the second contact member, a pin on the first contact member for engaging in the said groove for coupling the two contact members, contact arcs on the surfaces facing each other of the two contact members, each are forming a lateral contact on the contact member, on which it is mounted, a solenoid located in the casing, securing means for the second contact member, capable of being acted on by the said solenoid, a spring capable of acting on the securing means for securing the second contact member, a connecting lead from the solenoid to a contact member at the bottom of the safety device, a contact strip connocted to the solenoid and extending laterally from the
  • An automatic safety device for electric lines comprising in combination a casing surfacesfacingeach other of the two contact members, each are forming a lateral contact on the contact member, on which it is mounted, a solenoid located in-the casing, a detent arrangement capable of engaging in the .second contact member, a spring capable of acting on the. detent arrangement, a connectin lead from the solenoid to a contact mem er atthe bottom of' the safety device, a contact stri connected to the solenoid and extending laterally from the sec ond contactmember, a contact strip in the casing extendin from the first contact member to the soce t of the safety device and means for turnin the first contact member. 3.
  • An automatic safety lines comprising in com ination a casing of insulating material, a socket on the said casing, a rotatable contact member in the said casing, a second rotatable contact member device for electric in the casing, a spring capable of acting on the second contact member and of turning the same when free to move, a semicircular groove in the second contact member, a pin on the first contact member for engaging in the said groove for coupling thetwo contact members, contact arcs on the surfaces facing each other of the two contact members, each are forming a lateral contact 011115118 contactmember, on which it is mounted, a solenoid located in the casing, a fixed iron core in the casin a pivoted detent capable of engaging in t e second contact member, when the latter is in a certain position, a spring capable of acting on the said detent, a connecting.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Breakers (AREA)
US36746A 1924-08-18 1925-06-12 Safety device for electric lines Expired - Lifetime US1662970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1662970X 1924-08-18

Publications (1)

Publication Number Publication Date
US1662970A true US1662970A (en) 1928-03-20

Family

ID=7738619

Family Applications (1)

Application Number Title Priority Date Filing Date
US36746A Expired - Lifetime US1662970A (en) 1924-08-18 1925-06-12 Safety device for electric lines

Country Status (4)

Country Link
US (1) US1662970A (enrdf_load_stackoverflow)
FR (1) FR598928A (enrdf_load_stackoverflow)
GB (1) GB238515A (enrdf_load_stackoverflow)
NL (1) NL17036C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647186A (en) * 1949-11-15 1953-07-28 Fed Electric Prod Co Circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647186A (en) * 1949-11-15 1953-07-28 Fed Electric Prod Co Circuit breaker

Also Published As

Publication number Publication date
GB238515A (enrdf_load_stackoverflow) 1925-11-19
NL17036C (enrdf_load_stackoverflow)
FR598928A (fr) 1925-12-29

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