US3361268A - Tower crane - Google Patents

Tower crane Download PDF

Info

Publication number
US3361268A
US3361268A US548264A US54826466A US3361268A US 3361268 A US3361268 A US 3361268A US 548264 A US548264 A US 548264A US 54826466 A US54826466 A US 54826466A US 3361268 A US3361268 A US 3361268A
Authority
US
United States
Prior art keywords
mast
weight
counter
chassis
crane
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
US548264A
Other languages
English (en)
Inventor
Pingon Pierre Joseph
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.)
Individual
Original Assignee
Individual
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 claimed from FR16181A external-priority patent/FR1455107A/fr
Priority claimed from FR55166A external-priority patent/FR89824E/fr
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3361268A publication Critical patent/US3361268A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B66C23/18—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
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/344—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes adapted for transport purposes
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib

Definitions

  • a quickly erectable tower crane comprises a lower chassis, a swivel ring fixed on the chassis and surmounted by a mast which may be of simple construction or made up of a plurality of telescopic parts and carries a jib at its upper end.
  • a movable counterweight is pivotally connected to a point adjacent the lower part of the mast, elements being provided between this counterweight and the mast so that these two parts of the crane may be shifted relative to each other. This relative motion permits both a control of the mast erection when the counterweight rests upon the ground and a control of the counterweight erection so that it becomes operative for balancing the jib while the crane works.
  • This invention relates to a rapidly erectable work-site tower crane.
  • Rapidly erectable work-site tower cranes are generally constituted by a chassis upon which there is articulated a mast in two telescopic parts, which is intended to support the jib. For transportation this mast is brought down to the horizontal position. It then remains connected to the chassis by its articulation, the said chassis remaining in its normal position. The assembly is transported by means of wheels placed beneath the chassis and towards the end of the mast.
  • the purpose of the invention is to remedy the draw backs of the known arrangements, and to permit the realization of a rapidly erectable tower crane which can be transported, with its ballast, in the form of a short and compact road-travel assembly.
  • the invention is carried into effect in a transportable tower crane comprising a lower chassis, a swivel ring fixed on this chassis and surmounted by a mast which may be of simple construction or formed from a plurality of telescopic parts and carries a jib at its top, and a counter-weight directly or indirectly articulatedly connected to a point disposed towards the lower part of the mast, elements being provided between this counterweight and the mast so that these two parts of the crane may be displaced in relation to one another.
  • the style of the articulation between the counter-weight and the mast is so designed that when the counter-weight has been lowered so as to rest on the ground or on a support surface, the mast can be moved by pivoting about the axis of articulation and can be brought down on to the counter-weight for transportation.
  • a carrier train is placed beneath the forward part of the mast constituted by the chassis. This forward part can for example bear upon a tractor, in which case an articulation having a vertical axis can be provided at this point.
  • Another carrier train is also disposed towards the rear of the mast when it is in the horizontal position, preferably at the rear third of the length of the mast.
  • the mast in the horizontal position, in fact serves as a carrier girder, beneath which the counter-weight can be fixed.
  • the elements which efiect the relative movement be tween the counter-weight and the mast can be constituted by one or more jacks, or by a block and tackle or similar device, occupying an appropriate position.
  • a tackle-block a cable can be provided wound on a special erecting drum, driven by a suitable winch or combined with the hoisting winch of the crane, this winch being fixed preferably beneath the mast in the transportation position.
  • This same block and tackle can if desired be extended to the interior of the mast in order to effect its telescopic movement during erecting.
  • the point of articulation between the counter-weight and the mast may be selected in any manner, for example axially of the mast.
  • this articulation point is preferably brought towards the side of the mast which is directed upwards during transportation, permitting the mast of its own accord to descend again into the horizontal position under its own weight during the dismantling of the crane.
  • the lower chassis of the crane can be formed in a conventional way by a base and four arms articulated thereto, carrying bearing elements or translational movement elements (such as wheels or caterpillar tracks), while these arms can be folded to within the track width of the assembly for transportation.
  • the chassis In the case of small or medium-size cranes, the chassis is connected to the mast in such manner that during transportation it occupies a position perpendicular to its working position, the support arms of this chassis being folded upwards.
  • the lower chassis is then constituted by a base upon which arms are articulated, and by a ball ring upon which a rotating chass s is mounted, and the latter serves as an articulation element for the mast, so that in the transport position the base retains its horizontal position, the arms being folded in the longitudinal direction of the assembly.
  • the rotating chassis is then prolonged towards the rear, supporting the counter-weight, and towards the front in order to serve as a saddle for coupling to the tractor.
  • a tackle-block provided between the rotating chassis and the mast renders it possible to raise the latter for erection. If desired, this tackle may be prolonged into the mast so as to serve for the telescopic movement thereof.
  • the counter-weight In the transport position the counter-weight can be fixed on the mast by means of pegs and the mast then serves as carrier girder for the assembly. It will in particular be noted that in this case it will be advantageous to use a cast-iron counter-weight, the bulk of which is noticeably less than that of a current counter-weight.
  • the counter-weight in the case of very small machines which can be transported wholly on a vehicle, is articulated to the mast at a sufiiciently high point so that the counter-Weight may be deposited on the platform of a vehicle, for example, a lorry, and in the dismantling of the crane this counter-weight serves as support about which the mast is swivelled for the loading of the crane onto the as o;
  • FIGURE 1 is a partial elevational view of an embodiment of the tower crane according to the invention
  • FIGURE 2 shows this tower crane in the transport position
  • FIGURE 3 is a profile view of a tower crane according to a variant, in the transport position
  • FIGURE 4 is a partial front view, showing the lower chassis of this crane in the transport position
  • FIGURE 5 is an elevational view of the crane in the position for use
  • FIGURE 6 is a plan view of the lower chassis in the position for use
  • FIGURE 7 shows, in elevation, another embodiment corresponding to a crane which is transportable on a vehicle.
  • the crane comprises a chassis 1, which is equipped in a manner known per se with articulated arms 2, on the ends of which there are provided support elements 3 resting on the ground during working, as indicated in FIGURE 1.
  • the central part of the chassis 1 is surmounted by a ball-type or roller-type swivel ring 4, which carries the mast 5 of the crane.
  • this mast is of simple construction, but it could equally be constituted by a plurality of telescopic elements.
  • the jib 6 of the crane is articulated at 7 to the upper end of the mast 5, in the usual manner.
  • the counter-weight of the crane comprises a frame 8 into which the actual ballast 9 is fitted and which is articulated at 10 to the lower part of the mast 5, in the vicinity of the swivel ring 4.
  • a jack 11 is interposed between a point 12 of the mast 5 immediately close to the ring 4 and another point 13 provided on the frame 8 of the counter-weight.
  • a connecting rod 14 intended to retain the counter-weight 8, 9 can be provided between the counter-weight and the mast 5. The action of the counter-weight is transmitted to the jib by cables 15.
  • a carrier train formed by wheels 16, is here provided in a fixed position towards the upper part of the mast 5 when the latter is in the vertical position.
  • this carrier train could be removable.
  • a tackleblock assembly is provided between the mast and the counter-weight, the purpose of which assembly will be mentioned hereinafter.
  • the mast 5 of the crane serves in fact as a carrier girder and that for transportation this crane constitutes a short and compact assembly, including the counter-weight, which is suspended beneath the mast.
  • a jack is placed at the front beneath the chassis ll and the tractor I9 is separated from the crane, then the latter is lowered until the front part of the counter-weight 8, 9 rests on the ground. The jack is then removed and the peg 18 is disengaged.
  • the jack 11 is then operated. When this jack shortens, the rear part of the counter-weight 8, 9 first comes into contact with the ground. Then the assembly formed by the mast and the chassis bears on the counter-weight 8, 9, which rests wholly on the ground, and pivots about the point 10 in order finally to arrive at the vertical position.
  • the support arms 2 are then unfolded and locked. The position obtained may be seen from FIGURE 1, the counter-Weight 8, then being in the position indicated in dot-and-dash lines in FIGURE 1.
  • the jack 11 is then operated afresh, in the opposite direction to the previous.
  • the assembly of mast and chassis has sufficient stability to cause the raising of the counter-weight 8, 9.
  • the relative movement of the counter-weight and the mast is utilized either to cause the telescopic movement of the elements of a mast in a plurality of parts, or to raise the jib with the aid of the tackle-block assembly it? provided between the mast and the counter-weight.
  • the counter-weight 8, 9 by its mass assists the jack 11 to pull upon the tackle-block assembly 17. It is seen that the erecting of the crane is extremely simple and rapid.
  • FIGURE 1 The working position of the assembly is represented in FIGURE 1. Converse operations permit of returning the assembly into the transport position.
  • the counter-weight can be constituted by easily transportable blocks which can be assembled rapidly on the frame 8 shifted by the jack.
  • a passage is provided between the wheels 16 of the carrier train fixed on the mast, so that the machine can be moved while the ballast is left on the ground, and similarly can be brought to the lifting position, passing over the ballast, in reverse.
  • the counter-weight 8, 9 can be replaced my a Caterpiller track assembly or another all-terrain movement assembly, ballasted in a suitable way.
  • the crane has been brought by road to the site, in the transport position as shown in FIGURE 2, it is set on the Caterpillar-tracked assembly.
  • the pneumatic-tired carrier trains are then removed and the machine can shift on the site from one point to the other, after folding.
  • the crane comprises a lower chassis 1 associated with articulated arms 2 which, as may be seen especially from FIGURE 4, are raised vertically for transport so as to be situated within the road-travel track width.
  • the mast 5 of the crane serving during transportation as carrier girder beneath which the counter-weight or baliast 9 is placed, is connected to the chassis I through the swivel ring 4.
  • This mast forming a carrier girder, rests towards the rear third of its length upon a rear carrier train 16, while the forward part of the assembly rests upon a tractor 19, as described with reference to the previous embodiment.
  • the jib 6 of the crane is here again articulated at 7 to the mast.
  • the articulation point 21 of the counter-weight 9 on the mast is brought to the upper side of the mast when the mast is in the transport position, and the counter-weight 9 is connected by a cable or tackle-block assembly 22 to the drum of a winch 23 placed beneath the mast in the horizontal position and passing over a return pulley 24 provided at the foot of the mast.
  • this crane is similar to that described above.
  • the winch 23 is operated so as to wind up the cable 22, causing the mast 5 to pivot about the articulation point 21 into a vertical position.
  • the articulated arms 2 of the lower chassis are then extended to occupy the position represented in FIGURES 5 and 6.
  • the operation of the winch then permits of raising the jib and the counter-weight, and of telescopically extending the elements of the mast 5 if the latter is in a plurality of parts.
  • the offset articulation point 21 permits the mast 5 to serve as drive element for turning to the horizontal position, and the cable 22 and winch 23 then serve simply to brake this movement.
  • the crane is of small dimensions and has a total weight permitting it to be transported on a vehicle such as a truck 41.
  • This crane is similar to that represented in FIGURES 1 and 2.
  • the point 42 of articulation of the counter-weight 9 on the mast 5 is placed sufliciently high to enable the counter-weight to be placed on the platform of the truck 41 as shown.
  • This articulation point is preferably placed at the center of gravity of the assembly formed by the mast 5, the jib 6 and the lower chassis 1.
  • the crane represented in FIGURE 7 comprises an erecting winch 43, which is fixed on the mast 5 beneath the articulation point 42 and so as to be situated beneath the mast when the latter has been turned to the horizontal position.
  • FIGURE 7 there is indicated in solid lines the transport position, into which the mast 5 is turned down upon the counter-weight 9, which itself rests on the platform of the truck 41. In this position, the mast is fixed on the counter-weight through a connecting rod 44. On arrival at the working site the mast 5 is pivoted into the vertical position and the arms 2 are unfolded from the chassis 1. The height of the articulation point 42 is so calculated that in this position only the rear wheels 45 of the chassis 1 rest on the track intended to receive the crane, the front wheels 46 remaining slightly above this track. At this moment the erecting winch is operated, which extends the mast 5 and at the end of that travel raises the jib 6, which is held by a tie rod fixed to the counter-weight.
  • a transportable tower crane comprising a lower chassis, a swivel ring fixed on said chassis, a mast having a top portion and a lower portion, surmounting said swivel ring, and a jib provided at said top portion of said mast; a counter-weight articulatedly connected to a point on said lower portion of said mast for vertical swinging movement relative to said chassis and mast and jib, and actuating means provided between said counter-weight and said mast for moving the same with respect to each other and with respect to said chassis.
  • a transportable tower crane comprising a lower chassis, a swivel ring fixed on said chassis, a mast having a top portion and a lower portion surmounting said swivel ring, said mast being movable between a vertical working position and a horizontal transport position, and a jib hingedly connected to the top portion of said mast; a counter-weight articulatedly connected to a point on said lower portion of said mast for vertical swinging movement relative to said chassis and mast and jib, and actuating means provided between said counterweight and said mast for moving the same with respect to each other and with respect to said chassis said counterweight being, in said transport position of said mast, secured beneath said mast.
  • a transportable tower crane according to claim 2 comprising a front carrier train and a rear carrier train detachably located beneath said chassis and beneath said mast in the horizontal transport position, respectively.
  • a transportable tower crane comprising a cable forming a tackle-block assembly and a winch secured on a side surface of said mast for relatively moving said mast with respect to said counterweight.
  • a transportable tower crane comprising a lower chassis, a swivel ring fixed on said chassis, a mast having side surfaces, a top portion and a lower portion surmounting said swivel ring, and a jib provided at said top portion of said mast; a counter-weight articulatedly connected to a point on said lower portion of said mast for vertical swinging movement relative to said chassis and mast and jib, the mast being movable between a vertical working position and a horizontal transport position, said articulation point being located near the side surface of said mast which is directed upwards when said mast occupies a horizontal position, a cable forming tackle-block assembly and a winch secured on the side surface of said mast which is directed downwardly when said mast occupies said horizontal position for relatively moving said mast with respect to said counterweight, and means for swinging said counter-weight vertically relative to said chassis.
  • a transportable tower crane comprising a lower chassis, a swivel ring fixed on said chassis, a mast having a top portion and a lower portion surmounting said swivel ring, said chassis, swivel ring and mast being rigidly connected so that said mast constantly occupies a position perpendicular to said chassis, and a jib provided at said top portion of said mast; a counter-weight articulatedly connected to a point on said lower portion of said mast for vertical swinging movement relative to said chassis and mast and jib, and actuating means provided between said counter-weight and said mast for moving the same with respect to each other and with respect to said chassis.
  • a transportable tower crane having sufiiciently small dimensions and weight to permit its transportation on a vehicle, comprising a lower chassis, a swivel ring fixed on said lower chassis, a mast having a top portion and a lower portion surmounting said swivel ring, and a jib hingedly connected to said top portion of said mast; a counter-weight articulatedly connected to a point on said lower portion of said mast for vertical swinging movement relative to said chassis and mast and jib, actuating means provided between said counter-weight and said mast for moving said mast with respect to said counter-weight between a vertical working position and a horizontal transport position, said articulation point provided on said mast being located at a level which is higher than a vehicle platform that serves for trans porting the crane but substantially below the top of the mast in such a manner that on operation of the actuating 5 97

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
US548264A 1965-05-07 1966-05-06 Tower crane Expired - Lifetime US3361268A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR16181A FR1455107A (fr) 1965-05-07 1965-05-07 Grue à tour transportable à montage rapide
FR55166A FR89824E (fr) 1966-03-28 1966-03-28 Grue à tour transportable à montage rapide

Publications (1)

Publication Number Publication Date
US3361268A true US3361268A (en) 1968-01-02

Family

ID=26163683

Family Applications (1)

Application Number Title Priority Date Filing Date
US548264A Expired - Lifetime US3361268A (en) 1965-05-07 1966-05-06 Tower crane

Country Status (7)

Country Link
US (1) US3361268A (pt)
BE (1) BE680166A (pt)
DE (1) DE1278708B (pt)
DK (1) DK123520B (pt)
ES (1) ES326429A1 (pt)
GB (1) GB1103173A (pt)
SE (1) SE326540B (pt)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640401A (en) * 1970-01-14 1972-02-08 Pierre Joseph Pingon Transportable tower crane for rapid erection
US20100102017A1 (en) * 2007-02-16 2010-04-29 Itrec B.V. Hoisting crane and vessel with such a crane
US20130119007A1 (en) * 2010-06-23 2013-05-16 Patrick Kramer Vehicle for transporting ballast weights
DE102014225336A1 (de) * 2014-12-09 2016-06-09 Wobben Properties Gmbh Turmdrehkran zum Errichten einer Windenergieanlage, sowie Verfahren zum Errichten des Turmdrehkrans
US20170183203A1 (en) * 2015-12-23 2017-06-29 Manitowoc Crane Group France Automatic unfolding and folding tower crane comprising a mast and a jib shifted with respect to the mast

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150754A (en) * 1977-05-23 1979-04-24 Ami Industries, Inc. Utility crane
DE3303524A1 (de) * 1983-02-03 1984-08-09 Wilhelm 5020 Frechen König Turmdrehkran
FR2903095B1 (fr) * 2006-06-29 2008-08-22 Potain Soc Par Actions Simplif Dispositif de lest mobile pour grue a tour transportable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310001A (pt) * 1963-03-04
US3083837A (en) * 1961-01-31 1963-04-02 Thew Shovel Co Crane
FR1325817A (fr) * 1962-03-23 1963-05-03 Potain & Cie Ets F Perfectionnements aux dispositifs de relevage pour grues
US3190457A (en) * 1962-06-25 1965-06-22 Linden Knut Elis Mobile crane with pivotable boom mounted for alternate use as a tower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310001A (pt) * 1963-03-04
US3083837A (en) * 1961-01-31 1963-04-02 Thew Shovel Co Crane
FR1325817A (fr) * 1962-03-23 1963-05-03 Potain & Cie Ets F Perfectionnements aux dispositifs de relevage pour grues
US3190457A (en) * 1962-06-25 1965-06-22 Linden Knut Elis Mobile crane with pivotable boom mounted for alternate use as a tower

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640401A (en) * 1970-01-14 1972-02-08 Pierre Joseph Pingon Transportable tower crane for rapid erection
US20100102017A1 (en) * 2007-02-16 2010-04-29 Itrec B.V. Hoisting crane and vessel with such a crane
US8459477B2 (en) * 2007-02-16 2013-06-11 Itrec B.V. Hoisting crane and vessel with such a crane
US20130119007A1 (en) * 2010-06-23 2013-05-16 Patrick Kramer Vehicle for transporting ballast weights
US9061625B2 (en) * 2010-06-23 2015-06-23 Patrick Kramer Vehicle for transporting ballast weights
WO2016091413A1 (de) * 2014-12-09 2016-06-16 Wobben Properties Gmbh Turmdrehkran zum errichten einer windenergieanlage, sowie verfahren zum errichten des turmdrehkrans
DE102014225336A1 (de) * 2014-12-09 2016-06-09 Wobben Properties Gmbh Turmdrehkran zum Errichten einer Windenergieanlage, sowie Verfahren zum Errichten des Turmdrehkrans
CN107001012A (zh) * 2014-12-09 2017-08-01 乌本产权有限公司 用于建立风能设备的塔式旋臂起重机以及用于建立塔式旋臂起重机的方法
US20170334685A1 (en) * 2014-12-09 2017-11-23 Wobben Properties Gmbh Tower crane for erecting a wind turbine, and method for erecting said tower crane
CN107001012B (zh) * 2014-12-09 2019-07-19 乌本产权有限公司 用于建立风能设备的塔式旋臂起重机以及用于建立塔式旋臂起重机的方法
US10781081B2 (en) * 2014-12-09 2020-09-22 Wobben Properties Gmbh Tower crane for erecting a wind turbine, and method for erecting said tower crane
US20170183203A1 (en) * 2015-12-23 2017-06-29 Manitowoc Crane Group France Automatic unfolding and folding tower crane comprising a mast and a jib shifted with respect to the mast
US10577228B2 (en) * 2015-12-23 2020-03-03 Manitowoc Crane Group France Automatic unfolding and folding tower crane comprising a mast and a jib shifted with respect to the mast

Also Published As

Publication number Publication date
ES326429A1 (es) 1967-03-01
DE1278708B (de) 1968-09-26
DK123520B (da) 1972-07-03
GB1103173A (en) 1968-02-14
SE326540B (pt) 1970-07-27
BE680166A (pt) 1966-10-03

Similar Documents

Publication Publication Date Title
US3939988A (en) Tower crane
US4394911A (en) Heavy duty crane
US4660731A (en) Telescopic crane for heavy loads
US3938670A (en) Tower crane
US3053398A (en) Rotary tower crane
US2130487A (en) Crane construction
US2772004A (en) Portable gantry crane
US4381060A (en) Ring supported mobile tower crane
US3602375A (en) Piggyback load handling crane
US3361268A (en) Tower crane
US3045837A (en) Rotary tower crane
US2774484A (en) Gantry
US4483448A (en) Heavy duty crane
US3237781A (en) Outrigger counterbalance for cranes
US3202299A (en) Mobile guy derrick and counter balancing crane
US3934729A (en) Tower crane
EP0099636B1 (en) Access equipment
US3246769A (en) Crane
US2680525A (en) Portable crane
GB2122165A (en) Supplementary equipment for use with a self-propelled crane with a telescopic jib
JP2002507530A (ja) リングリフトクレーン
US2394217A (en) Portable crane
US3249235A (en) Variable base alpha-frame hoist
US3454173A (en) Container side loading system and means therefor
US4168930A (en) Rear-loading side-dumping slag pot carrier