US1856789A - Electrical time switch - Google Patents

Electrical time switch Download PDF

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Publication number
US1856789A
US1856789A US408374A US40837429A US1856789A US 1856789 A US1856789 A US 1856789A US 408374 A US408374 A US 408374A US 40837429 A US40837429 A US 40837429A US 1856789 A US1856789 A US 1856789A
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US
United States
Prior art keywords
time switch
switch
current
electrical time
pin
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
US408374A
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English (en)
Inventor
Schuler Hermann
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.)
Rheinische Metallwaaren and Maschinenfabrik AG
Original Assignee
Rheinische Metallwaaren and Maschinenfabrik 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 Rheinische Metallwaaren and Maschinenfabrik AG filed Critical Rheinische Metallwaaren and Maschinenfabrik AG
Application granted granted Critical
Publication of US1856789A publication Critical patent/US1856789A/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
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/32—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to electrolytic processes; with timing of actuation of contacts due to chemical processes

Definitions

  • the present invention relates to ⁇ a 4time switch.
  • the object of the invention is to provide a time switch which, by the use of a be adjusted accurately and by a regulating device having many steps, resulting in minimum deviations from the time of switching for which the switch is adjusted, which deviations do not exceed the permissible limits.
  • gas is produced by a controlled gasifying of liquid eected by electrolysis and gas pressure is used as a driving means for bringing a switch member into a position eecting the release of the desired secondary action, for instance the closure or interruption of the external circuit.
  • the electrolysis is, according to the invention, effected in a closed space of constant volume until the increased gas pressure at a, certain height causes removal or destruction of the thin-walled cover plate of a channel or conduit leadingto the movable switch member.
  • the released gas pressure then causes a sudden movement of the switch .member into the operative position in which it, by making Contact, instantaneously eects the release of the desired secondary action.
  • Theproduction of an always equal amount of the, as required for any desired time of switc ing is effected by the use of the electrolysis in an absolutely exact correspndence with the control of the working current supplied to the time switch.
  • FIG. l one construction according to the invention is shown in Figure l.
  • the illustrated device is particularly adapted for application in connection with a time switch mechanism for an explosive charge which may be used for blasting purposes in mines and for artillery mines as well as projectiles.
  • Figure 2 is a diagram showing the electrical connections of the device illustrated in Figure l.
  • the time switch together with the appertaining source of electric current is, for invmaterial.
  • the foil 02 is fixed in position by means of a cover o, screwed upon the metallic protective sleeve or shell o1.
  • a small central bore c3 is provided in the cover c, and in an upper cylindrical enlargement of this bore a contact pin c., is arranged which is axially movable against the pressure of a spring 05 and is insulated from the metal cover 04.
  • the upper end of the contact pin c6 extends into a entral bore d, of the insulating body (l holding the time releasingdevice in the casing.
  • the insulating body d carries a contact spring e.
  • the glass vessel c is filled with an electrolyte, for instance, with a weak acidulous liquid.
  • Two electrodes f are fused through the bottom of the glass vessel c.
  • the source g of the electric current consists of a galvanic element of well known construction having the electrodes G2 and G3 and a separate glass vessel g1 which contains the acid.
  • the production of current is started onlyafter .the destruction of the glass vessel g1 and the flooding/of the element g with the acid leaving the destroyed vessel g1.
  • a projecting pin h is arranged rotatably and longitudinally movable in the housing a. This pin h, when driven inward manually, will break the glass container g1.
  • the annular resistance z' seated in a stationary in- Q sert b, in the casing, in connection wit-h the to the electrodes f in the gas generator chamber c and serves to regulate the strength of the current supplied tothe gas generator, and thus to determine the time of ignition.
  • the controlling resistance i is adjusted to produce the current strength desired at any time, whereby the adjusted value of the resistance may be indicated and i of ignition, the current is supplied to the.;
  • the element g in a well known manner, is inserted in a circuit closed by a second line le, g2, g3, e, k across an ignition means arranged at a certain distance from the time switch mechanism and this provided to open said sealed vessel and allow it to discharge its contents into the galvanic cell to cause the same to produce electricity, when it is desired to operate the device.
  • ignition means is thereby ignited and'causes ducing gas electrolytically; conducting means :5.
  • circuit closing means constituting a movable'closure of the cell, and being movable by virtue of the gas pressure produced in said cell, when said pressure exceeds a definite value, said circuit closing means being adapted to control any desired circuit.
  • a source of current means for controlling the strength of the current delivered from said source of current; a cell for producing gas electrolytically; conductin means completing a circuit which inclu es the source, the cell and the control means in series; a diaphragm closing the cell,'where ⁇ by said diaphragm will be disrupted when the gas pressure in the cell exceeds a certain value; and a circuit closing member arranged to be actuated by the gases thus released, said circuit closing member being adapted to control any desired circuit.

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  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
US408374A 1928-11-29 1929-11-19 Electrical time switch Expired - Lifetime US1856789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE143824X 1928-11-29

Publications (1)

Publication Number Publication Date
US1856789A true US1856789A (en) 1932-05-03

Family

ID=5669896

Family Applications (1)

Application Number Title Priority Date Filing Date
US408374A Expired - Lifetime US1856789A (en) 1928-11-29 1929-11-19 Electrical time switch

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US (1) US1856789A (en))
BE (1) BE365573A (en))
CH (1) CH143824A (en))
FR (1) FR685145A (en))

Also Published As

Publication number Publication date
BE365573A (en))
FR685145A (fr) 1930-07-04
CH143824A (de) 1930-11-30

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