Abstract: Apparatus for sifting heavy supporting structures relative to stationary load carrying structures comprises a plurality of parallel jack rods secured to the load carrying structure. A plurality of climbing jacks adapted to operatively engage the jack rods are secured to the heavy supporting structure. The arrangement is such that the heavy supporting structure is shifted relative to the load carrying structure when the climbing jacks are operated and advance along the jack rods while the load carrying structure remains stationary. The reactive forces caused by the operation of the climbing jacks is transferred to the load carrying structure by the jack rods. A method for shifting heavy supporting structures is also disclosed.

Abstract: An elongated elevated box girder and roadway structure is constructed in a number of individual elongated sections with the support structure and formwork being reused, in turn, for each section. Each section is constructed in a number of stages. Initially, a support structure is built up from grade or is mounted on permanent upright members of the structure being formed, such as piers or abutments. Formwork for the bottom slab and the upright outside webs of the box girders are placed upon the support structure. Concrete is poured into the formwork for the bottom slab and webs and, after being allowed to set for a given period, and posttensioned, if necessary, the formwork is stripped and the support structure is removed. The support structure and formwork are then moved and set up for the next section to be constructed. The roadway slab includes the top slab of the box girder and cantilever sections extending laterally outwardly from each side of the top slab.

Abstract: This invention relates to an arrangement for projecting cantilever sections of multi-sectional bridge supporting structures of steel or prestressed concrete forming the superstructure of the bridge which is supported on bridge piles. The arrangement includes at least one traveling auxiliary beam movably carried on and arranged above the superstructure for spanning between superstructure sections. Two concreting scaffolds each comprising a supporting part having crossbeams and rollers are arranged above the superstructure and carry a platform which is arranged below the superstructure for carrying casings to extend the projecting superstructure sections. A transport device is movably carried on the auxiliary beam and supports the concreting scaffolds for transport between superstructure sections and from the end of a completed section to a bridge pile for beginning construction of a new section.

Abstract: An apparatus is described which is particularly suitable for applying insulation in the form of plastic foam or the like to a surface of a container to be insulated. The apparatus deposits a strip of foam in a generally helical manner while following the contour of the container or structure.

Abstract: A slip form or mule for continuously laying concrete along one or more adjacent lanes on the sloping side of a contoured drainage ditch. The slip form is affixed to or movably mounted from a construction machine that travels along the top berm of the ditch. A tool frame support slideably contains a form having an open top and bottom with longitudinally adjustable and segmented side walls and is suspended from cooperating derrick and pivotal frame supports along the side of the machine for registry with and travel spaced above the sloping side of the ditch. A flexible finishing pan follows the form means in the plane of its bottom edges and includes adjustable supports suspending or compressing the pan in relation to the concrete slab being laid.

Abstract: An apparatus for the sequential production of concrete sections of a superstructure spanning a plurality of piers comprises a main girder positioned above a respective one of the piers and advanceable from pier to pier. A concrete form is carried by the girder for producing portions of each superstructure section, the concrete forms being movable along the girder. The main girder is supported on previously completed portions of the superstructure and can be advanced thereon by means of an auxiliary support in the center of the girder, two main supports positionable rearwardly of the auxiliary support and a third main support positionable forwardly of the auxiliary support. The main supports are in thrust and stress force bearing connection with the main girder and the main supports are movable along the girder in the longitudinal direction. The main supports may be retracted and lowered for vertically moving the main girder together with the concrete form carried thereby and any concrete therein.

Abstract: Climbing formwork for use in the erection of reinforced concrete structures in which the raising of the formwork from storey to storey is carried out by the use of movable vertically extending members the height of which when fully extended is in excess of the height of two storeys of a building to be erected, the members being maintained in their correct vertical positions by supporting tubes set into the concrete of the structure. The members carry between them beams or the like for supporting the outer forms and preferably some or all of the inner forms used for pouring the structure and are raised to a height equivalent to that of one storey of the structure after the completion of the pouring of the concrete of a storey. The vertically extending members are preferably in the form of double acting hydraulic cylinders having a piston extendable under hydraulic pressure, the extension of the piston being utilized for raising the forms.

Abstract: This disclosure relates to an apparatus for erecting structures from flowable and settable material and includes a lifting unit having an open ended shell supported by a carrier pivotally attached to a medial portion of an arm disposed generally radially to the structure which is to be formed, a first pair of relatively telescopically movable inner and outer members connected to an outboard end of the arm in generally tangential relationship to the structure, first means for moving the inner and outer members telescopically relative to each other, and second means for moving the inner and outer members along the arm in a synchronous manner to that of the relative telescopic motion.

Abstract: The embodiment of the invention disclosed herein is directed to a curber and sidewalk-forming apparatus for contouring concrete along a predetermined run. The apparatus includes a hopper having at least one wall thereof sloping downwardly toward an opening formed in the bottom of the hopper which coincides with an opening formed in a slide plate surface at the bottom of the machine. Flowable concrete passes from the hopper through the opening in the slide plate and is directed rearwardly of the apparatus while the apparatus is transported in a predetermined direction along its run. A vibrating apparatus is secured to one of the walls of the hopper to insure proper flow of the concrete along the interior surface of the hopper so that the concrete continuously flows beneath the apparatus for forming curbs, gutters and sidewalks. A motor generator set is secured to the slide plate and produces electricity to operate electrical motors of the vibrator and winch secured thereto.

Abstract: The invention pertains to apparatus for forming elongated concrete structures, such as walls and the like, by slip forming. In particular, the invention is directed to the concept of slip forming walls of asymmetrical transverse cross section as required in the forming of highway barrier walls. The concrete slip form includes opposite sidewalls and open front and rear ends. At least one of the sidewalls is vertically adjustable wherein the sidewall configuration being formed thereby may have a height variance with respect to the opposite sidewall being formed. The form includes fixed wall portions associating with the adjustable wall portion and power means permit adjustment of the vertical adjustable wall. It is also within the scope of the invention to provide a form wherein both sidewalls are vertically adjustable, and the form includes means for introducing steel reinforcement into the formed wall, and periodically permitting accessory equipment to be embedded into the wall.

Abstract: There is disclosed apparatus for the sectional cantilever construction of bridge girder systems of reinforced or prestressed concrete having a superstructure comprising a closed box cross-section and superimposed laterally overhanging bridge decking, said apparatus comprising travel devices for abutting against an already finished part of the bridge superstructure at whose position fixed support members, e.g.

Abstract: The upright annular concrete wall of a silo, swimming pool, or like structure of large diameter is poured in a slip form suspended from three columns for best stability of the slip form arrangement. A work platform is mounted on beams which radially connect the form with a coaxial, inner, annular frame. Carriers are interposed between the columns and the frame in such a manner that six approximately equally distributed circumferential portions of the frame are connected to the columns, so that the unsupported spans of the frame between connections to the carriers are only one half of what they would be if the frame were directly attached to the columns.

Abstract: Apparatus for slip-forming a pipe or drainage trench including a leading cutter which is attached to the front of a prime mover for digging a trench. A following cutter is also attached to the front of the prime mover, but behind the leading cutter to thereby level off the surface of the ground along the top of the trench. A rigid concrete shaping apparatus including a portion overlying the trench also includes a rigid tubular portion which is disposed within the trench. A roll of flexible plastic material is connected to the apparatus and this plastic material is sealingly connected at one end thereof to a source of air pressure which causes the plastic to inflate to a tubular shape. This plastic is thereby maintained in an inflated condition and extends along the length of the trench to a point inside of the tubular portion of the concrete shaping apparatus, at which point the plastic is pinched by rollers to thereby maintain the pressure within the inflated portion of the flexible tube.

Abstract: A slip form or screed for forming elongated concrete formations, such as a highway barrier wall wherein a concrete receiving hopper is located forwardly of the slip form, and the front wall of the hopper is provided with a hinged gate pivotal between open and closed positions. The gate structure permits stationary objects to enter the hopper and slip form as to become a part of the formed concrete formation, and the gate structure includes concrete retaining means to confine the concrete when the gate is opened, and control the flow of concrete forwardly through the opening when stationary objects are received within the form.

Abstract: A curbing machine utilizing slip form casting of cement or concrete is disclosed which will continuously cast curbing or pavements and simultaneously with the casting operation provide the necessary expansion joints in the cast curbing. The curbing machine includes a conventional tractor with an additional speed reduction gear box. A unitary open bottom hopper and slip mold is removably and adjustably carried between the wheels of the tractor by hydraulic cylinders permitting both vertical and tilting adjustment of the mold to adjust the mold to the contour of the ground. Means are provided within the hopper and immediately in front of the slip mold to form the expansion joint in the cast curbing. In an alternate embodiment, the slip mold is mounted outboard of the tractor with hydraulic cylinders provided to raise, lower and tilt the slip mold.

Abstract: The invention relates to a device for raising a sliding shuttering designed to be used for the continuous production of silos, water towers, etc.The device consists of two cases, coaxial with a slide bar, separated from one another by a jack also coaxial of which each of the two parts in respectively integral with one of the cases, each case comprising locking jaws in its interior which, alternating from one case to the other, engage with a slide bar, the locked case serving as a support point for the case in movement and reciprocally, the pressure of the compressed high-pressure fluid of the jack for raising the case joined to the frame, supporting the shuttering, which device is characterised in that the means for raising the other case is provided by a low pressure fluid which acts when the high-pressure fluid is decompressed, which enables an efficient device to be obtained and avoid even a slight backward movement of the shuttering.