GB1081715A - Adjustable boom angle warning device - Google Patents

Adjustable boom angle warning device

Info

Publication number
GB1081715A
GB1081715A GB39384/64A GB3938464A GB1081715A GB 1081715 A GB1081715 A GB 1081715A GB 39384/64 A GB39384/64 A GB 39384/64A GB 3938464 A GB3938464 A GB 3938464A GB 1081715 A GB1081715 A GB 1081715A
Authority
GB
United Kingdom
Prior art keywords
boom
jib
cab
contacts
switches
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
Application number
GB39384/64A
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.)
MARK VISCEGLIA Inc
Original Assignee
MARK VISCEGLIA 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
Application filed by MARK VISCEGLIA Inc filed Critical MARK VISCEGLIA Inc
Publication of GB1081715A publication Critical patent/GB1081715A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S37/00—Excavating
    • Y10S37/906—Visual aids and indicators for excavating tool

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

1,081,715. Jib angle indicators for cranes. MARK VISCEGLIA Inc. Sept. 28, 1964 [Sept. 30, 1963], No. 39384/64. Heading B8B. Two mercury switches 35, Fig. 6, are pivotally mounted on the boom of a crane and are preset by rotating them about spindles 38 so that the contacts of one of them are closed when the jib is lowered to a predetermined angle with respect to the horizontal and the contacts of the other are closed when the jib is raised to a predetermined angle with respect to the vertical. This operates a warning light and buzzer in the operator's cab. A test switch in the cab enables the operation of the warning devices to be checked. The spindles 38 have knobs 48, Fig. 2, mounted on them and the latter have pointers which move over 90 degrees scales to indicate the angles of the boom at which the warning devices are set to operate. The switches Fig. 18, have semicircular contacts 94, 96 so that rotation of the switches about their longitudinal axes does not render them inoperative. The device may be adapted in a simple manner for mounting on either the right-hand or lefthand side of the boom depending on which side of the boom the operator's cab is located.
GB39384/64A 1963-09-30 1964-09-28 Adjustable boom angle warning device Expired GB1081715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US312516A US3228019A (en) 1963-09-30 1963-09-30 Adjustable boom angle warning device

Publications (1)

Publication Number Publication Date
GB1081715A true GB1081715A (en) 1967-08-31

Family

ID=23211811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39384/64A Expired GB1081715A (en) 1963-09-30 1964-09-28 Adjustable boom angle warning device

Country Status (2)

Country Link
US (1) US3228019A (en)
GB (1) GB1081715A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544960A (en) * 1968-04-25 1970-12-01 Hayes Track Appliance Co Railway safety apparatus
US4163127A (en) * 1978-01-11 1979-07-31 J. H. Electric Co., Inc. Position sensitive safety switch
US4236864A (en) * 1978-11-09 1980-12-02 Raymond Couture Safety control system for the boom of a crane
US4273243A (en) * 1979-04-18 1981-06-16 Locher Frank S Lift centering device
US4445011A (en) * 1981-10-13 1984-04-24 Hansen Ronald E Freestanding multidirectional electrical control device
US7852247B2 (en) 2006-12-05 2010-12-14 Texas Instruments Incorporated Mixed-signal filter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1142134A (en) * 1912-08-26 1915-06-08 Asahel H Barrows Aeroplane appliance.
US1907402A (en) * 1930-07-14 1933-05-02 Fedor John Paul Turn bank indicator and inclinometer
GB454928A (en) * 1935-04-04 1936-10-05 Wylie Safe Load Indicators Ltd An improved safe load indicator for cranes and the like
US2346066A (en) * 1942-10-12 1944-04-04 Joshua C Conrad Overload and radius indicator for cranes
US2418576A (en) * 1944-06-24 1947-04-08 Myrtle L Conrad Signal system for cranes
US2782276A (en) * 1954-03-15 1957-02-19 George J Woods Ignition cut-off device
US2772411A (en) * 1954-10-25 1956-11-27 Fishfader S Boom angle indicator for cranes
US2789362A (en) * 1955-12-22 1957-04-23 Arthur M Maroth Electrical clinometer
US3011261A (en) * 1958-01-31 1961-12-05 George T Riley Boom spot indicator
US3030477A (en) * 1960-11-04 1962-04-17 Hensley Jack Isaac Position sensitive liquid conductor switch

Also Published As

Publication number Publication date
US3228019A (en) 1966-01-04

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