GB1081715A – Adjustable boom angle warning device
– Google Patents
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
1963-09-30
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.)
1963-09-30
Filing date
1964-09-28
Publication date
1967-08-31
1964-09-28
Application filed by MARK VISCEGLIA Inc
filed
Critical
MARK VISCEGLIA Inc
1967-08-31
Publication of GB1081715A
publication
Critical
patent/GB1081715A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
1963
1963-09-30
US
US312516A
patent/US3228019A/en
not_active
Expired – Lifetime
1964
1964-09-28
GB
GB39384/64A
patent/GB1081715A/en
not_active
Expired
Also Published As
Publication number
Publication date
US3228019A
(en)
1966-01-04
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