US2413701A - Crane - Google Patents

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Publication number
US2413701A
US2413701A US462078A US46207842A US2413701A US 2413701 A US2413701 A US 2413701A US 462078 A US462078 A US 462078A US 46207842 A US46207842 A US 46207842A US 2413701 A US2413701 A US 2413701A
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United States
Prior art keywords
jib
mast
crane
head
cable
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Expired - Lifetime
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US462078A
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English (en)
Inventor
Faure Andre
Faure Antoine
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Individual
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Individual
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Publication of US2413701A publication Critical patent/US2413701A/en
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    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • 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

Definitions

  • This invention relates to cranes and more particularly tocranes having a span adjustablebetween wide .limits and'is concerned more specilically throughnon exclusively with those cranes wherein the span may. be ⁇ varied lby shifting the lifting point of themed.
  • a primary object of .the invention is to provideia novel lor. improved adjustable span. crane avoiding the aforesaid; 'disadvantages' and incorporating. safety meanswhereby the r.islr...ofac cidents'zdue to vbreakage or: collapseofthecrane may. beobviated orzminimizedwhere an attempt to lift A ⁇ a Vloadzexceedinga prescribed. limit consistentwith'span is Ainadvertently made.
  • Another object of the invention is to provide an improved crane 4as aforesaid wherein the safetymeans .involve the Lutilisation of those unbalanced.V conditions- 1 which may arise between jibiand ⁇ couni'ferjilcldue to an.undu1y large load for; stoppingthe .lifting action eitheri: by ⁇ de'- clut'ching the prime mover from the hoisting gear or by.causing saidrgear to come to an inoperative position;y
  • a further object :of the'invention is tov .provide an. improved: crane as aforesaid.
  • the jib and counterjib insteadpf being unitedrigidlyto a stationary point on the-mast headare .connected to a lever pivoted tosaid head, .the rocking motion-ef said .lever -due to-.a tilting stress onthe jib being transmitted by tripping .meansso vas to'instantaneously-bring about the required declutching action.
  • a still ⁇ furtherobjeci'f offthe --invention is to provide vlan improved.
  • craneA as aforesaid particularly-utilisable for handling ymaterials used.
  • ⁇ controllers 'having-means such vas operating handles ,movable -alongbars extending..thr,oughout the height of said mast.
  • Still a .further object of the invention is to providean vimproved crane as aforesaid wherein the..several-.operations such angularly adjusting1the jlb,A raising .and lowering the load, and varying theispanfare, ensured by a common prime morerlocated inthe; lower region of the crane mast and: through clutches and ⁇ gears operable from -said adjustable handles.
  • a still furtherpobi-ect of the,- invention is to provide :an ⁇ improved crane as aforesaid wherein.v variation Yof the load-carrying span is controlled1through a drum arrangement whose axis is coincident with the pivotal center .of the mast head.v n
  • the invention comprises :the -novel construction, combination andarrangement of parts that willnow be descrihedwin Vdetail with reference to the accompanying diagrammatic drawings illustrating a convenient embodiment of the same and forming a part-of the present disclosure.
  • FIG. 1 is .a fragmentary detail. view showing the ⁇ mastjieademechanism of a crane according to .therinventiom wherein variations of the loadcarryingnspan is obtained. by means of a carriage traversable along a horizontal jib.
  • Fig. :1A isan enlarged detail of the revoluble mast head and pivotedleverassembly Aof Fig. 1.
  • Figure-.2 is an isometric view showing the crane mast and operating'and controller meansassociated, therewith.
  • Figure/3 isa .view showing on a much-smaller scalethecrane in itsentirety manyv parts being omittedy forthe sake of clearness.
  • the crane jib 2 which has a latticestructure is hinged at 2 to the mast head 3 .revolubly supported Vbetween rollers 5v.
  • the counterl'ib- 6 also -oflattice structure. is tted witha c ounterweighjl .l and is also rhinged-at 6' tofthe mast ⁇ head 3.
  • The: other 4el1.d.:of-the lever. l0 is forked and operatively connected-toA an Vupstanding hollow tripping shaft I2.
  • the jib'z supports a traversable carriage-I3 operated Yby'a cable: I4 (hereafter: referred to as 3 the second cable) passing over jockey pulleys I5, I5.
  • This cable is driven by a transmission (hereafter referred to as the secondary transmission) which includes a drum I6 actuated through a bevel gear I1 by an elongated sleeve I8 loosely surrounding the shaft I2 and actuated in turn through a straight gear I9 by an upstanding shaft 20.
  • This shaft extends throughout the height of the lattice crane mast 2
  • the drum I6 which drives the cable I4 for traversing the carriage I3 may be formed with a groove for holding said cable.
  • the cable I4 may be so wound as to form several convolutions on the drum I6.
  • the hoisting cable 25 (hereafter referred to as the first cable) is secured at one of its ends at 25 (Fig. l) to the outer end of the jib 2 and carries a hook 21 forming a load grapple. Said cable passes at the top end of the mast head over an overhead pulley 28 and then extends downwardly through the hollow shaft I2 and mast 2 I.
  • the lower end of the cable 25 is secured to a winch 29 or a similar actuator which may comprise, as shown, fast and loose pulleys 30* forming a clutch and operated by a rigging 3I operated by an upwardly directed controller bar 32 extending along the mast 2I and provided with an operating handle 32 clamped to said bar by an Vadjustable bush 32".
  • said head 3 is rigidly girdled by a toothed ring 34 meshing with a pinion 35 actuated by an upstanding shaft 35 extending down to a declutchable reverser 31 similar to the reverser 22.
  • Said reverser 31 forms part of a transmission (hereafter referred to as the primary transmission) and is operated through a suitable rigging 38-and controller bar 39 from an operating handle 39 clamped to said bar by an adjustable bush 39".
  • the controller bars 24, 32 are linked at their upper ends through a tumbler 42 to a fork 43 embracing a portion of the central shaft I2 deiined between a pair of anges thereon and thus operatively connected to said shaft so as to respond to its axial displacements, the latter causing the tumbler 42 to rock about its axis and to impart a translatory motion to the controller bars 24, 32.
  • the operating handles 24', 32', 39' can be moved along their respective carrier bars 24, 32, 39 owing to the provision of the adjustable bushes and may be clamped thereto at any suitable position so as to suit practical requirements responsive to the particular work to be effected by the crane in each instance,
  • this crane is assumed to be of the travelling type and comprises a base carriage 44 having wheels 45 for rolling on rails such as 46.
  • FIG. 3 shows diagrammatically a building in the course of erection, assuming three fioors to havev already been laid and the crane operator to stand on the uppermost floor whence he can readily supervise the work and control the Operation of the crane by means of the operating handles 24', 29', 32" which are assumed to have been preset on their respective bars 24, 29, 32 to a corresponding level.
  • the safety device incorporated with the crane lassembly operates as follows:
  • the crane span may be varied by a traverse motion of the carriage I3, a heavier load might be lifted at y than at y' and the motion of the carriage I3 from y to 'y' might prove to be dangerous since the maximum load must gradually dwindle down during that motion.
  • the safety means operate in the same wayin response to a ⁇ downward tilt of the jib2 a corresponding pull on the tie rod 8, a rocking of the lever IIJ, a lowering of the shaft I2 and an operation of the bar 24, thereby declutching the drive at 22 and bringing the carriage I3 to a standstill priorto its reaching a critical position during its outward stroke along the jib 2.
  • a crane comprising a mast surmounted by a revoluble head including a toothed ring, a jib and a shorter counterweighted counterjib both oppositely ⁇ hinged to said head, a lever pivoted to thehead ⁇ top and connected by ties to the outer ends of the jib and counterjib, a carriage traversable along the jib and supporting a flexible member carrying a load grapple, a prime mover at the lower end of the mast, a primary transmission including a declutchable reverser between the prime mover and mast head toothed ring, a
  • said member operated Aby the. prime mover, .controllers including handles adjustable heightwise along'V the crane mast and :respectively connected to said declutchablegear, actuator and reverser, and tripping means interconnecting saidlever and thosecontrollers serving the jib carriagev operating lgear and grappleA actuatorto iautomat-v ically'bring the last-named controllers into de# clutching position responsive to unbalance betweenl jib 'f andcounterjib. ⁇
  • a crane comprising a mast surmounted by a revoluble head, a jib and a counterjib mutually balanced and oppositely hinged to the head, a lever pivoted to said head and tied to the outer ends of the jib and counterjib, a carriage traversable along the jib and supporting a cable carrying a load grapple, a motor at the base of the mast, a rotary element coaxial with the mast axis and a declutchable gear between the motor and jib carriage, a pulley guiding the cable on the mast head, a declutchable Winch for said cable operated by the motor, controllers including handles adjustable heightwise along the crane mast and linked respectively to said declutchable gear and Winch, and tripping means interconnecting said lever and controllers to automatically bring these controllers into declutching position responsive to unbalance between jib and counterjib.
  • a crane comprising a mast surmounted by a revoluble head, a jib and counterjib mutually u balanced and oppositely hinged to the head, a lever pivoted to said head and tied to the outer ends of the jib and counterjib, a carriage traversable along the jib and supporting a first cable carrying a load grapple, a motor at the base of the mast, a transmission including a second cable passing over a drum coaxial with the mast axis for driving the jib carriage from the motor, said transmission including a declutchable reversing gear, a pulley guiding the iirst cable on the mast head, a declutchable winch for said iirst cable operated by the motor, controller bars extending vertically along the crane mast, said bars being respectively linked to said declutchable gear and winch, a handle adjustable along each of said vertical bars and tripping means interconnecting said pivotable lever and bars to automatically bring these bars into de
  • a crane comprisingza mastv surmounted-,by a revoluble head ⁇ having a peripheralv gear ringpa jib anda counterjib .mutually balanced and oppositely hinged tothe head, a lever pivoted'to said head and tied totheV outer endsof thetjib and counterjib, ya carriage traversable along. the jib and supportinga first cable icarryinga .load grapple, afmotor at -the base of the mast, a prie mary-'transmission including. a declutchable 'freverser between the motor and masthead ring, ⁇ a secondary transmission including a second cable passingover'a drum.
  • said.. tripping means including a shaft coincident with the masi-axis and having projections engaged by a fork on the pivotable lever and another fork on a tumbler linked to said two bars.
  • a crane comprising a mast, a mast head revoluble on rollers at the top of the mast and having a peripheral gear ring, a jib and a counterjib mutually aligned and balanced and hinged to opposite points of the mast head, a cranked lever pivoted to the top of said head and tied to the outer ends of the jib and counterjib, a carriage traversable lengthwise of the jib and supporting a rst cable carrying a load grapple, an electric motor in the lower region of the mast, a pri-mary transmission including a declutchable reverser and an upstanding shaft carrying a pinion interconnecting the motor and mast head gear ring, a secondary transmission including a second endless cable guided over jockey pulleys on the jib and over a drum on the mast head, said drum being coaxial withv the mast and operated through a bevel gear having a sleeve extension carrying a straight gear operatively connected to the motor by a shaft and
  • a crane comprising a mast surmounted by a head, a jib and a counter jib mutually balanced and oppositely hinged to said head, a lever pivoted 7 to said head and tied to the outer ends of the jib and counter jib, a carriage traversable along the jib and supporting a iiexible member carrying a load grapple, a prime mover adjacent the b'a'se f the mast, a transmission including a declutchable gear between the prime mover and jib carriage, intermediate means guiding the flexi-bleV member on the mast head, a declutchable actuator for said member operated by the prime mover, tripping means operated by said pivoted lever, a link and lever connection extending heightwise along the mast between said tripping means and declutchable gear, and a second link and lever connection extending heightwise along the mast between said tripping means and declutchable actuator whereby the unbalancing of said jib relative to
  • a crane according to claim 7 further comprising manual control means adjustable heightwise along said connections.
  • a crane comprising, a mast, a jib and a counter jib oppositely hinged to the mast, hoisting means carried by said jib, driving means for said hoisting means, means including an interof the free ends of the jibs in opposite vertical directions, and means controlled by thelmovement of said tie means for automatically disconnecting said driving means from the hoisting means.
  • a crane comprising, a mast, a jib and a counter jib oppositely hinged to the mast, means including a tension cable interconnecting the free end portions of said jibs for mutually balancing the latter, whereby upward pivotal movement of one jib will permit downward pivotal movement of the other jib, hoisting means carried by said jib, driving means for said hoisting means, and means controlled by the movement of said tension cable for automatically disconnecting said driving means from the hoisting means.
  • a crane comprising, a mast, a jib and a counter jib oppositely hinged to the mast, means including a tension cable for mutually balancing said .libs whereby upward pivotal movement of one jib Iwill permit downward pivotal movement of the other jib, hoisting means carried by said jib, means for operating said hoisting means, and means responsive to a predetermined movement of said cable by said jib for rendering ineective said hoist operating means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)
US462078A 1941-09-24 1942-10-15 Crane Expired - Lifetime US2413701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR851124X 1941-09-24

Publications (1)

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US2413701A true US2413701A (en) 1947-01-07

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US462078A Expired - Lifetime US2413701A (en) 1941-09-24 1942-10-15 Crane

Country Status (6)

Country Link
US (1) US2413701A (fr)
BE (1) BE449603A (fr)
CH (1) CH237841A (fr)
DE (1) DE851124C (fr)
FR (1) FR974561A (fr)
GB (1) GB602204A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676388A (en) * 1948-04-20 1954-04-27 Faure Andre Method for erecting tower cranes
US2858945A (en) * 1953-09-22 1958-11-04 M Tichauer S A R L Soc Pivoting and hoisting arrangement for the distributing assembly of a tower crane
US3642148A (en) * 1969-05-29 1972-02-15 Richier Sa Device for achieving permanent equilibration in tower cranes
US3750895A (en) * 1970-01-22 1973-08-07 Richier Sa Yard jib crane
US3851767A (en) * 1970-02-13 1974-12-03 Richier Sa Tower cranes
US3994401A (en) * 1974-12-06 1976-11-30 Hans Tax Crane equipped with dual trolleys
WO2001096180A2 (fr) * 2000-06-13 2001-12-20 Jaros Vladimir Simulateur volant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976872C (de) * 1953-12-08 1964-07-02 Hans Liebherr Kippsicherung fuer leichte Turmdrehkrane
FR2077779B1 (fr) * 1970-02-13 1974-09-20 Richier Sa
DE3136102C2 (de) * 1981-09-11 1985-11-21 Mauer-Blitz Bau-Service GmbH, 4670 Lünen Kleinkran zum lagenweisen Vermauern von insbesondere großformatigen Mauersteinen
NL193829C (nl) * 1986-12-24 2000-12-04 Hek Bouwmachinemij En Machf B Hefinrichting voorzien van althans een mast en een langs deze mast op en neer beweegbaar platform.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE471906C (de) * 1929-05-08 Jul Wolff & Co G M B H Sicherheitsvorrichtung
DE708813C (de) * 1938-09-20 1941-07-30 Demag Akt Ges Kippsicherung fuer einen Schwimmkran

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676388A (en) * 1948-04-20 1954-04-27 Faure Andre Method for erecting tower cranes
US2858945A (en) * 1953-09-22 1958-11-04 M Tichauer S A R L Soc Pivoting and hoisting arrangement for the distributing assembly of a tower crane
US3642148A (en) * 1969-05-29 1972-02-15 Richier Sa Device for achieving permanent equilibration in tower cranes
US3750895A (en) * 1970-01-22 1973-08-07 Richier Sa Yard jib crane
US3851767A (en) * 1970-02-13 1974-12-03 Richier Sa Tower cranes
US3994401A (en) * 1974-12-06 1976-11-30 Hans Tax Crane equipped with dual trolleys
WO2001096180A2 (fr) * 2000-06-13 2001-12-20 Jaros Vladimir Simulateur volant
WO2001096180A3 (fr) * 2000-06-13 2002-04-04 Vladimir Jaros Simulateur volant
US20040029081A1 (en) * 2000-06-13 2004-02-12 Vladimir Jaros Airbone simulator

Also Published As

Publication number Publication date
BE449603A (fr)
FR974561A (fr) 1951-02-23
GB602204A (en) 1948-05-21
DE851124C (de) 1952-10-02
CH237841A (fr) 1945-05-31

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