Abstract: A molding machine is disclosed which can be used in the manufacture of concrete building elements. A method for the molding of concrete modular units using the disclosed concrete molding machine is also provided. The molding machine is constructed of vertical walls joined to form a single outer frame which is moveable up and down by means of expandable joints such as pneumatic or hydraulic cylinders which allow positioning and vibration of the outer frame. To said outer frame are attached horizontally expandable joints which support at least two mold sides which can be placed in abutment by the action of the expandable joints so as to form the continuous sides of a mold. The bottom side of the sequentially assembled mold is provided by a metal plate to which the aforesaid sides are lowered or attached.

Abstract: A mold having a desired print head shape includes a cover in which a plurality of rods or ductile fibers are attached, the cover being positioned with the rods extending into the mold and to the side opposite the cover. A hardenable synthetic material is introduced through a hole in the cover and after hardening of the material to form the print head, the rods are withdrawn from the mold to leave bores or apertures in the print head which serve as passageways for the droplets of ink.

Abstract: A form pan section comprising a top wall and opposed side walls depending from a respective opposed side of the top wall. A support flange is provided along a free edge of each of the side walls. The support flange has a load supporting bearing section. Means is provided in each of the support flanges to secure the flange to supporting framework. Connection means is provided inwardly of the top wall and side walls to interconnect the pan section to another pan section. A form pan is constructed of at least two end pan sections having the above-described characteristics.

Abstract: Bushing and sleeve assembly are attached in an alignment fixture and placed in the stay ring-discharge ring. An internal pilot bearing is placed in the headcover to accommodate an aligning bar which is lowered through the headcover and pilot. The lower end of the aligning bar is engaged with the aligning fixture and the pilot can then be engaged with the headcover to automatically align the bushing and sleeve assembly with the two headcover bushings at the upper bearing pilot and the internal intermediate pilot.

Abstract: An apparatus, and method, for producing finger and thumb holes in one bowling ball which are identic to those existing in another bowling ball; the essential purpose being to duplicate--in a new bowling ball, for example--the exact size, shape, direction, and span of the finger and thumb holes in an existing, properly hand-fitting, bowling ball.

Abstract: A method for producing precast manhole bases utilizing an apparatus consisting of a mold jacket defining vertical walls and a mold form disposed within the jacket. The form includes a central portion spaced inwardly from the jacket and channel forming members extending over the central portion with inserts attached to the channel forming members and extending into contact with the jacket walls. When concrete is poured over the mold form and allowed to solidify, the bottom wall of the base forms over the central portion with the channel forming members defining the channels in the bottom wall of the base. The channel forming members consist of a first member attachable in a fixed position on the central portion, this first channel forming member being shaped for defining an effluent channel and a central basin in the mold base. One or more additional channel forming members extend radially from the basin, and these include locking means for fixing the members in any desired position relative to the basin.

Abstract: This invention relates to a device for forming a pre-set void in a floor, wall or other structural member, to thereby define an essentially integral spatial void or closure therein, which maintains the UL fire rating of the floor or other structural member in which it is positioned, and which may be readily removed, when desired, to define the void, without use of special tools or procedures. The device is useful for defining modular or other openings to receive, for example, insert devices, through which cables, such as power and telephone lines, may be passed from a source, for connection with fixtures, phones and other devices. The device is adapted to be secured to forms, for example so that a material such as cement or other floor, wall or other structural forming materials may be positioned or poured thereon and therearound; the device in such cases may form a preset-sealed part of the structural member, readily available for opening when desired.

Abstract: An improved method for fabricating a ceramic sparger plate for use in the degassing of molten metal is disclosed in which a castable ceramic is poured into a mold which contains an array of vertically disposed strands which are removed subsequent to the ceramic curing and prior to firing of the ceramic thus leaving the desired pattern of holes through which the fluxing gas is introduced into the molten metal.

Abstract: A sleeve assembly for forming a lined opening in molded structures made from concrete or the like, the sleeve providing the lining and being held in place during formation of the structure by a pair of conical sleeve lock elements having extended tapering surfaces for supporting sleeves of a variety of sizes, the sleeve lock elements preferably being held in place upon forming panels for the structure by means of a central stabilizing rod penetrating through the sleeve lock elements and the panels. An additional embodiment of the sleeve assembly is adapted to be secured to a generally horizontal panel upon which a molded structure such as a floor is formed.

Abstract: Disclosed is a device for forming apertures in cement or similar hardenable, plastic materials. The device, intended for use where holes of several inches in length are desired, comprises a body portion having affixed therein a threaded nut or coil. The body portion may be, for example, cylindrical in shape and be a solid elastomeric material having an aperture which extends axially through the body portion and communicates with a nut. The nut should be located adjacent the topmost portion of the body portion. A threaded rod may be inserted in the body aperture and screwed into the nut. A U-shaped bracket is provided which is placed on the hardened cement with the legs of the U-shape disposed on either side of body member. The joining member (which completes the U-shape) is spaced above and from the body portion by the legs. The joining member has a slot for receiving the bolt. The device is removed by threading a nut on the bolt down upon the joining member of the bracket.

Abstract: A reusable lightweight foundation window form is provided for use in poured concrete walls providing adjustment of the form to various thicknesses, convenient installation and removal, and a means for inserting different styles of doors, windows, and the like. Adjustment is accomplished by the use of tubular spacers of various lengths disposed between corner braces of the opening form.

Abstract: Hole forming devices have to be engaged between forms prior to pouring concrete. They are adapted to expand when in position to engage the inner faces of the forms thus holding them in position. The jack is a telescopic rod or tube having a heavy expansion spring surrounding same and normally urging the two portions of the hole forming device outwardly, but being held in the compressed or "set" position by means of a pin engaging through the two portions of the telescopic rod or tube. In one embodiment, when the pin is pulled, the sharpened ends of the rod or tube move away from one another, pierce the end caps of the forming device and engage the faces of the forms and at the same time move the end portions of the forming device outwardly into contact with the inner faces of the forms. In another embodiment, the ends of the rod or tube move outwardly and engage end pieces which in turn move outwardly and urge cylindrical saw-tooth end caps into contact with the inner faces of the walls of the form.

Abstract: Sewer form consisting of two telescoping sheet metal tubes whose outer ends are provided with conical portions adapted to engage pipe openings in a manhole, the form permitting the formation of an invert of concrete.

Abstract: An article expanded at the center portion and having the maximum diameter at said portion, for example a ball-shaped flexible tube joint, is produced by using a mold consisting of a main mold having the same inner surface as the outer shape of said article, a cover mold provided with an elastic core having the same outer shape as the inner shape of the above described article and provided with a hollow cavity in the inside of the core, and a bottom mold provided with a projection, which detachably fits in the hollow cavity in the core, the main mold being put between the cover mold and the bottom mold, and a cavity having the same shape as the article to be molded being formed by the cover mold, the elastic core, the main mold and the bottom mold, and by pouring a liquid elastomer into the thus formed cavity and hardening said liquid elastomer.

Abstract: Molding apparatus for molding articles without a seam or parting line even though the articles may have severe backdraft portions. The apparatus includes a flexible mold of relatively thick and self-supporting wall construction which is deformable by the application of fluid pressure differential to thereby release the finished article from the mold. One modification of the mold also has a thick radially extending flange which forms a seal with a vacuum pot when the mold is simply set in the pot. One modification is directed to a male and female type mold in which the outer female mold is expanded to be withdrawn from the article and the inner mold portion collapses inwardly so as to be withdrawn from the article.

Abstract: Knock-out inserts are injected molded of plastic with outwardly directed outside walls and inside panels. Opposite inside panels are each provided with a pair of spaced locking means so that the body of one insert may be coupled to mating locking means on an adjacent insert after removal of the associated outside walls.

Abstract: In abstract, a preferred embodiment of this invention is a multi-purpose form system for use in culverts, manholes and other locations. A basic semi-cylindrical form is provided for use in combination with other types of forms to give a complete system for accomplishing the results intended.

Abstract: A plug assembly, for temporary use with a concrete product insert having a coil defining an interior threaded surface, holds the insert in position adjacent a mold wall and prevents the interior of the coil from being filled with concrete. The plug assembly includes a plug having a hollow cylindrical elastomeric body defining a cavity which is open at one end of the body and a stem in the cavity attached to the body internally and extending out of the cavity a distance sufficient to provide for use of the stem as a handle. The outer surface of the cylindrical, elastomeric body is proportioned and threaded for firm matching engagement with the threaded coil interior surface upon predetermined radial compression and axial expansion of the body from its substantially unstressed condition. A support means has a first portion for insertion into the cavity in the elastomeric body and a second portion for attachment to a mold wall.

Abstract: An aperture forming device is provided for making openings such as tubular holes in concrete or the like during pouring thereof. The device utilizes a tube holder secured to a concrete form; a disposable tube attached to the holder and a cap member at the other or free end of the tube. Concrete is poured around the tube on the form and, after the concrete has set, the form, tube holder and tube may be pulled out of the concrete leaving the tubular aperture. A plurality of the devices can be combined in a pattern to form openings of various shapes.

Abstract: A molding apparatus is described having a body portion with a mold cavity therein and a core means within said cavity having a core follower thereon which is designed to move along the core during the molding operation. Utilization of the core follower permits rapid and accurate formation of multiple lumen tubes, particularly those having arcuate shapes.

Abstract: A method and an arrangement for connecting and aligning adjacent casting forms for the construction of multi-story buildings in which upper ends of vertical panels of adjacent forms are releasably connected by an intermediate body, spaced from each other according to the thickness of a vertical concrete wall to be cast therebetween. The intermediate body projects with an end portion upwardly beyond horizontal panels of the forms for a distance greater than a ceiling to be cast on these horizontal panels. A pair of parallel structural channels are releasably connected spaced from each other the same distance as the vertical panels to the projecting portion of the intermediate body so that after casting the vertical walls and the ceiling for one story and hardening of the concrete, the intermediate body and the casting forms may be removed and the latter re-erected for the next story properly aligned on the channels which have been left in place on the cast ceiling.

Abstract: A core holding structure for molds and method of making same. A hollow bushing is locked within a mold so positioned with respect to a cavity in the mold that a rod-like core may be mounted on the bushing to provide a bore for hollow members such as spouts used in the continuous casting of metals. The bushing effects proper spacing of the core from the walls of the mold so that the wall thickness of the finished article is controlled. The mold may be made from a single member or it may be made from a multiple piece mold. Special knock out plate members are used in connection with the one-piece molds to extend the life thereof.

Abstract: A sleeving assembly or form for forming voids in masonry comprises concentric tubular telescoping members. The members are formed from distinct density resinous materials which permit the inner member or core to be readily separated from the outer core.

Abstract: An apparatus for molding articles free of seams and parting lines including a one-piece flexible mold which is deformable and which includes a rigid core member, and a vacuum pot which is used to cause the mold to expand radially outwardly to allow the molded article to be released. The core member may comprise a rigid central mandrel which is rigidly embedded in the bottom wall of the mold and which is hollow and includes ports such that a pressurized catalytic gas may be injected into the mold material to cause a bonding agent to set.

Abstract: This is a device for forming vents or bores in concrete floors. A cylindrical base portion is secured to the surface upon which the concrete is to be poured and a rigid foam cylindrical portion is pushed downwardly into the base whereupon an upper cylindrical guard portion may be pushed over the upper end of the cylindrical core. Both the base and the guard portion are provided with inwardly projecting lugs which hold the cylindrical core into the base and hold the guard portion of the upper end of the cylindrical core. An ignitor cord harness extends around the cylindrical core which, when ignited, melts this core. The concrete floor is poured with the guard portion projecting above the floor level and after the concrete has set, the ignitor harness can be ignited thus melting and charring the core thus leaving a smooth cylindrical bore through the concrete floor.

Abstract: A concrete forming system includes a plurality of forms each comprising a planar upper wall having curved shoulders extending along each edge thereof and side walls comprising upper outwardly tapered portions which facilitate withdrawal of the forms following a concrete forming operation and lower portions extending perpendicularly to the upper wall. The lower portion of each side wall has longitudinally spaced sets of holes formed therethrough with each set comprising a plurality of vertically spaced holes. The forms have open ends, with one end of the form having an outwardly extending lip for receiving the opposite end of an adjacent form to position the exterior surfaces of the form in alignment across the joint therebetween. End caps are provided for receiving the upper walls and the side walls of the forms to close the otherwise open end.

Abstract: This is a device for forming vents or bores in concrete walls or floors. Basically, it consists of a sleeve containing a semi-rigid thermoplastic material or the like and means incorporated therein which, when ignited, either melt or burn out the core. These are inserted within the forms or on the floor surface prior to the pouring of concrete or the like and may remain in place in the finished wall or floor until they are required. The core includes a pair of semi-rigid thermoplastic sections urged outwardly from one another by a spring so that they engage the wall forms. The preferred embodiment includes ratchetted wall form engaging strips secured between each end cap and a detachable tool for urging the strips outwardly thus forcing or jacking the end caps into engagement with the wall forms when the spring is not strong enough for this purpose.

Abstract: The present invention encompasses a form pan for use in a form structure, the pan comprising a unitary shell having a top wall, opposed elongated side walls and end walls. A peripheral flange is formed about a free end of the side and end walls and defines a load supporting section and a connection section to permit interlocking with an adjacent pan and support of a load on the pans. The pans are of sufficient length to act as self supporting long beams to span spaced apart support beams which are normally held above a support surface by adjustable support posts.

Abstract: A process and portable apparatus for forming individual or multiple reinforced concrete, hollow core units of a modular building structure in interconnected side by side and/or high rise relationship which apparatus may be sufficiently collapsed to allow for easy removal from the formed and cured hollow core unit to again be used to form additional subsequent, interconnected, hollow core units of the building structure.

Abstract: Method and apparatus for forming steps in manhole structures. Manhole assembly is comprised of pre-cast concrete sections. Each such section is formed in an appropriate mold typically comprised of inner and outer mold shells. The inner shell is provided with pairs of openings arranged in a predetermined fashion. Plastic core members are snap fittingly inserted into the openings and are provided with resilient pairs of flanges which cooperate with the marginal edges of each opening to retain the core in proper position and alignment. The concrete is placed in the mold. One set and cured, the section is removed from the mold. The plastic core members are snapped free from their locked position with the mold inner shell and remain as an integral part of the cured section. U-shaped stepped sections are force fittingly inserted into the cores which serve to retain each step member in position.

Abstract: This disclosure deals with a pipe sleeve used to form a hole when pouring a concrete slab or the like. The pipe sleeve includes a tubular elongated side wall having an end wall closing one end thereof and a radially outwardly extending flange at the other end thereof. Longitudinally extending ribs are formed on the outside surface of the side wall, and a plurality of grooves are formed in the inner surface of the side wall. The side wall is tapered, and due to this taper, the pipe sleeves may be compactly stacked for storage or for shipping purposes. The sleeve may be used either in its original length or, if desired, in a shorter length by cutting the side wall to a desired length and then telescoping the two cut sections together. When stacked for shipping or storage, the ribs are located in the grooves but when two cut sections are telescoped, the ribs are out of the grooves and tightly bind the two sections together.

Abstract: Apparatus for forming concrete buildings that have numerous identical portions, which minimizes the set-up time for a group of forms, by permitting the forms to be individually released from set concrete while constantly maintaining the positions of the forms on a subform. The apparatus includes several forms with flanges that rest on a subform, several bolts for each form that project through flanges of the forms and through holes in the subform, and a spring for each bolt to urge its lower end downwardly with respect to the subform. After concrete is poured on the forms and partially sets, the subform is lowered a few inches even though the forms may remain stuck in the concrete, and then each form is individually freed from the concrete. As each form is freed, the bolts guide it down to its original position on the subform. The subform and forms then can be moved as a unit to a new location in the building where another identical concrete portion is to be formed.