US2318738A - Holding means for instruments - Google Patents

Holding means for instruments Download PDF

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Publication number
US2318738A
US2318738A US431399A US43139942A US2318738A US 2318738 A US2318738 A US 2318738A US 431399 A US431399 A US 431399A US 43139942 A US43139942 A US 43139942A US 2318738 A US2318738 A US 2318738A
Authority
US
United States
Prior art keywords
relay
rocker
armature
holding means
screws
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
US431399A
Other languages
English (en)
Inventor
Herman G Blosser
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.)
Hitachi Rail STS USA Inc
Original Assignee
Union Switch and Signal Inc
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 BE477674D priority Critical patent/BE477674A/xx
Priority claimed from US304811A external-priority patent/US2285890A/en
Priority to GB14999/40A priority patent/GB560079A/en
Application filed by Union Switch and Signal Inc filed Critical Union Switch and Signal Inc
Priority to US431399A priority patent/US2318738A/en
Priority to US432281A priority patent/US2323113A/en
Application granted granted Critical
Publication of US2318738A publication Critical patent/US2318738A/en
Priority to FR951344D priority patent/FR951344A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
    • B61L23/12—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only partly operated by train
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/30—Electromagnetic relays specially adapted for actuation by AC
    • H01H51/32—Frequency relays; Mechanically-tuned relays

Definitions

  • My invention relates to holding means for instruments, and particularly to holding means hereby the movable member of an instrument such as an electrical relay may be effectively locked againstmovement during shipment or handling of the relay to prevent damage which might otherwise result from such handling or shipment.
  • my present invention relates to holding means for locking against movement the movable parts of electrical relays which are suitable for use in railway signaling systems employing for the control of signaling devices direct current which is periodically interrupted or coded at diierent frequencies.
  • One well known form ol.' relay of the type described employs. an oscillating armature suspended by a iiat metallic spring from a rocker whichin turn, is suspended from the relay top plate by flat flexible strips, and in accordance with my invention the pendulum is provided with a screw threaded hole which receives one end o1' a locking screw. The other end of this screw projects through a clearance hole provided in the relay case and is gripped by a special clampto the relay case.
  • Fig. 1 is a View, partly in side elevation and partly in section, showing one form of relay having applied thereto embodying my invention.
  • Fig. 2 is a view similar to Fig. 1 taken at right angles to Fig. 1.
  • Fig. 3 is a detail view looking at the relay from the side opposite to that shown in Fig. 1.
  • the relay here shown is similar in all respects to the relay described in detail in my parent application, and only so much of the relay structure will be described in detail herein as is necessary for a full undere Patent No. 2,285,890 on June standing of the holding means embodying my present invention.
  • the relay comprises a suitable case consisting of a top plate I of insulating material secured to the upper end of a nonmagnetic frame 2, a base plate 3 secured to the lower end of the frame 2, and a transparent glass cylinder 4 clamped between the top plate I and base plate 3.
  • a contact carrying rocker I5 Suspended from the top plate I for swinging movement between two extreme positions by means of two iiexible strips I6 and I1 (see Fig. 3) is a contact carrying rocker I5 provided with a. plurality of iiexible contact lingers I8 and I9, each of which cooperates with a fixed contact ringer IIIa or I9a to close a contact I8-I8a or I9-I9a according as the rocker is swung to one or the other of its extreme positions.
  • the two outer lingers I8 and I9 are connected by means of the strips I 6 and II with terminal posts 23 mounted on the top plate I, while the remaining pairs of fingers are electrically connected by means of iiexlble connectors 24 with other terpositions of the flexible fingers when the fingers -are out of engagement with the associated fixed contact members are determined by stops 25 which are clamped against the outer faces of the fingers by means of associated studs 20, and which are so adjusted by bending them that the lingers will break the contacts in the desired positions in response to swinging movement of the contact carrying rocker I5.
  • the xed contact members I8a and I'9a are adjustably secured to angle brackets 26 adjustably mounted on terminal posts 21 secured to the top plate I.
  • the relay also comprises a suitable motor device for moving the rocker I5 between its two extreme positions to alternately operate the contacts I8-I8a and III-Illa.
  • this motor device comprises an electromagnet C having pole pieces 30a and 30h secured to the plate portions 2a and 2b in parallel spaced relation, and connected together at one end by a core 30 surrounded by a winding 33.
  • the free ends of the pole pieces cooperate with an armature 34 which is attached to the lower end of a metallic ilat spring 35, the upper end of which is secured to the center of the rocker I5 within a vertical groove 36 by means of a bolt 31, as best seen in Fig. 3.
  • the armature 34 together with the spring 35 serve as a pendulum to bias the rocker I5 to its central position in which it is shown in the drawings, and in which the contacts I 8-I8a and I8-I9a are all open, and the parts are so proportioned that when the armature occupies the position to which it is biased by gravity, it will be disposed outside of the eld set up between the pole pieces 30a and 3th.
  • the length of the armature is such that it is free to swing between the pole pieces and it will be seen, therefore, that energization of the winding 33 will tend to pull the armature between the pole pieces, and hence will swing the rocker 5 in a clockwise direction, as viewed in Fig. 2.
  • the rocker is also provided with other contacts which are not shown, but which are described in detail in applicants parent application referred to hereinbefore. that if they are connected in series with the winding 33 in a control circuit for the relay, the electromagnet will become alternately energized and deenergized in a manner to cause 'the rocker I5 to oscillate at a period which depends upon the thickness, stiiness and length of the spring 35 in combination with the mass of the pendulum-armature.
  • the pendulum-armature 34 possesses considerable mass, and unless some means are provided to prevent it from swinging during handling of the relay, damage is likely to result to the strips i6 and l1 which support the rocker l5, to the contacts, or to other vparts of the relay.
  • I prevent the armature from swinging Vby means of two screws 46 and 41, the upper ends of which vare screwed into tapped holes in the armature V34 to positions in which Ashoulders formed on the screws engage the bottom of the armature.
  • the lower ends of the screws 46 and 41 extend downwardly through clearance holes 48 in the bottom plate 3 and into holes 49 formed between split portions of a bracket 50.
  • the bracket 50 is secured to the underside of the bottom plate 3, and the lower Vends of the screws are clamped .between the splitV portions of the bracket by means of clamping screws 5
  • which draw the split portions together and cause them to securely 4grip the lower ends of the screws 46 and ⁇ '41.
  • the clamping screws 5l are rst loosened and the screws 46 and 41 are then removed, after which suitable plugs are inserted in the holes in the clamping plate 5l) and clamped in place by means of the clamping screws 5
  • One advantage of holding means embodying my invention is that it provides a simple and effective method for protecting the relay parts during shipment.
  • an instrument having a xed part and a movable part provided with a screw threaded hole, a screw screwedvinto 'said hole and extending through a clearance :hole in said xed part, a bracket secured to said fixed part and provided with a split portion which receives said screw, vand means for causing said split portion to grip said screw.
  • a relay comprising a rocker mounted for swinging movement'betwe'en two positions, a pendulum-armature secured to said rocker by means of a flat spring and cooperating with electromagnetic means for causing swinging movement of said rockerbetween its two positions, contacts operated by the movement of said rocker, and 'a casing enclosing all of said parts, of mea-ns for preventing movementof said pendulum-armature during shipment comprising a screw extending through a, clearance hole in said casing and screwed into a threaded lhole 'provided in said pendulum-armature; a bracket secured to said casing and provided with a split portion which receives the outer lend of :said screw, and means for causing said split portion to grip said screw in a manner to prevent movement of said screw in all directions.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnets (AREA)
  • Braking Arrangements (AREA)
US431399A 1939-11-16 1942-02-18 Holding means for instruments Expired - Lifetime US2318738A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE477674D BE477674A (en(2012)) 1939-11-16
GB14999/40A GB560079A (en) 1939-11-16 1940-10-08 Improvements relating to electric relays
US431399A US2318738A (en) 1939-11-16 1942-02-18 Holding means for instruments
US432281A US2323113A (en) 1939-11-16 1942-02-25 Electrical relay
FR951344D FR951344A (fr) 1939-11-16 1947-08-06 Perfectionnements aux relais électriques destinés en particulier aux dispositifs de signalisation pour chemins de fer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US304811A US2285890A (en) 1939-11-16 1939-11-16 Stationary contact
US431399A US2318738A (en) 1939-11-16 1942-02-18 Holding means for instruments

Publications (1)

Publication Number Publication Date
US2318738A true US2318738A (en) 1943-05-11

Family

ID=26974245

Family Applications (1)

Application Number Title Priority Date Filing Date
US431399A Expired - Lifetime US2318738A (en) 1939-11-16 1942-02-18 Holding means for instruments

Country Status (4)

Country Link
US (1) US2318738A (en(2012))
BE (1) BE477674A (en(2012))
FR (1) FR951344A (en(2012))
GB (1) GB560079A (en(2012))

Also Published As

Publication number Publication date
GB560079A (en) 1944-03-20
BE477674A (en(2012))
FR951344A (fr) 1949-10-21

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