Abstract: A method for the in situ repair of heat exchanger tubes in major heat exchanger equipment is disclosed in which supercooled sleeves are inserted into cracked heat exchanger tubes and are expansion-fitted firmly against the inner walls of the cracked tubes. In order to prevent premature expansion of the relatively long, small diameter sleeves during insertion, the tubes may be filled with a heat sink material which is removed following insertion. The insertion is also preferably accomplished very rapidly by means of a power-actuated ram which maintains the sleeve at its low temperature until the very last moment before insertion. Various guide means and plug means for the sleeve are described. The technology is also indicated as being applicable to the temporary sealing of defective tubes by using a removable plug in the form of a closed-end sleeve into whose interior a cryogenic agent can be selectively introduced during insertion and removal.

Abstract: The disclosed method involves making a brake shoe from symmetrical halves by placing a formed lining segment in position on laterally spaced brake shoe half sections with forces applied thereto to engage serrations in the shoe web half sections, forcing the shoe half sections together to form a full shoe while concurrently moving the serrations across the lining segment to form mating serrations on the lining segment and thereby provide serrated mating engagement of the serrated shoe rim with the lining segment. Lining segment retaining means formed on the shoe web half sections engage and hold the lining segment on the assembled shoe, the shoe rim half sections being secured together by fastening means which may be rivets or spot welds, by way of example.

Abstract: A method of fixing an annular piston onto a piston shaft includes providing an annular piston with a central bore having a diameter slighty less than the shaft diameter, heating the annular piston to expand the bore diameter and then placing the heated piston onto the shaft so that the piston, upon cooling, is permanently shrink-fit onto the shaft. In an end-of-car cushioning unit for a railway car, the prior shaft is cut adjacent the piston and the piston is rebored to a diameter slightly less than the diameter of the end portion of the piston onto which it is to be shrink-fitted.

Abstract: A tubular sleeve 12 is applied over an elongate body 10 which has a diameter greater than the inner diameter of the sleeve. An end portion 12a of the sleeve is engaged over an end portion of the body 10 to form a partial fluid-tight seal therewith. The opposite end portion of the sleeve is temporarily closed and fluid under pressure is introduced to the interior of the sleeve to inflate it sufficiently to enable it to be floated along the elongate body. Then the sleeve is displaced along the body. The fluid may be air introduced to the sleeve interior through a valve 14 which also temporarily closes the sleeve end.

Abstract: An open ended cylindrical sleeve is provided including a washer secured over one axial end of the sleeve in any convenient manner such as by welding and the washer is of an outside diameter greater than the outside diameter of the sleeve and of an inside diameter less than the inside diameter of the sleeve.

Abstract: A process and apparatus for fabricating an optical fiber cable assembly without significantly increasing the light attenuation in the optical fiber or fibers is described. An optical fiber assembly formed in accordance with the present invention comprises at least one optical fiber encapsulated within a metal or metal alloy tube. The tube is preferably formed using a draw forming technique of pulling a metal or metal alloy tape through at least one forming die. To compensate for the compressional strain induced in the fiber or fibers by tube springback upon relaxation of the pull force and to minimize increased light attenuation in the fiber or fiber, a back tension is imparted to each optical fiber during cable assembly. In a preferred embodiment, the back tension is imparted to each fiber by an accumulator about which the optical fiber is wound.

Abstract: An apparatus for maintaining electronic component pin alignment includes a support member having an adjacent lead shear, a stationary nest, a printed circuit board and a component feeder. A component in the component feeder includes a chip having a plurality of leads. The leads have a first end connected to the chip and a second free end. A movable lead guide engages the first end of the leads. A robot is mounted adjacent the support member for picking up the component from the component feeder, inserting the component into the stationary nest moving the component relative to the stationary nest for moving the lead guide from the first end of the leads toward the second free end of the leads, moving the component from the stationary nest to the shear for shearing the second free end of the leads, and moving the component from the shear to the printed circuit board and urging the leads into corresponding holes formed in the printed circuit board.

Abstract: Prior to packaging, semiconductor lasers are purged by being subjected first to high temperature and high current simultaneously so as to suppress stimulated emission and stress the shunt paths which allow leakage current to flow around the active region. A prudent, but nonessential, second step is to lower the temperature and/or current so that the lasers emit stimulated emission (preferably strongly, near the peak output power), thereby stressing the active region. Lasers subjected to such a purge exhibit stabilized degradation rates in short times (of the order of a few hours) and provide a robust population which meets the performance criteria of long lifetime systems.

Abstract: A process for making high performance NPN bipolar transistors functioning in a current switch logic circuit. A bipolar transistor is formed within an isolated region of a monocrystalline silicon body. The transistor includes an N+ subcollector, and N+ collector reach-through which connects the subcollector to a major surface of the silicon body, a P base region above the subcollector and adjacent to the reach-through an N+ emitter region within the base region and extending from the major surface. The base region includes an intrinsic base region located below the emitter region and an extrinsic region extending from the major surface and adjacent to the emitter region. The extrinsic base completely surrounds the emitter region. A mask is formed above the major surface having openings only above major portions of the extrinsic base regions.

Abstract: A process is described for fabricating self-aligned buried doped regions in semiconductor devices and integrated circuits which avoids any need for delineation of the buried doped regions in the active portions of the device. Avoiding delineation improves the quality of the epitaxial layer used to cover the buried doped regions thereby improving overall performance and yield. Multiple mask layers are used in connection with a single mask pattern to achieve self-alignment. One mask layer consists of a material with a modifiable etch rate, e.g. polysilicon. A portion of the single crystal substrate is rendered non-single crystal and used as an alignment key which is propagated through the epitaxial layer grown over the undelineated buried doped regions. The dimensions and separations of the self-aligned buried doped regions can be precisely controlled.

Abstract: In manufacturing a DC motor body (1) including a motor magnet (2), conventionally, a magnetized magnet (2) is fitted to one by one to the cylindrical molding core (11) and a motor body is injection-molded within a cavity formed between a motor body forming mold (10) and a cylindrical molding core (11) to which the magnet is attached. Therefore, the magnet should previously be molded and stocked before molding the motor body, thus not being applicable to mass-production processes. To overcome the above problems, the motor magnet (2) and the motor body (1) are molded in sequence in accordance with two separate molding steps by the use of the same molding core. This method can eliminate troublesome magnetic fitting work, the need of magnet stock and enhance the dimensional precision of motor magnet, thus being applicable to mass-production process while increasing the energy transduction efficiency of the DC motor.

Abstract: A fully automated residential-type circuit breaker assembly is made possible by the provision of retaining slots and guide channels formed within the breaker case. The breaker case then serves as an assembly fixture for specially designed armatures and magnets used within the trip section of the breaker as well as for a special designed bi-metallic trip element. A high calibration yield is accomplished by means of a low friction latch assembly.

Abstract: Apparatus and method for induction heating "over-the-partition" intercell connections in a lead/acid storage battery by melting both lead risers so as to form a connection over the top of the insulating partition. A mold is suspended on top of the partition and an induction coil is supported on the mold so as to surround the top portion of the intercell lead risers. High frequency alternating electrical current is applied to the coil so as to melt the top portion of the lead risers so that upon fusion thereof in the mold and cooling, the tops of the risers are interconnected. The interconnection bridges the top of the risers and rests on top of the partition. The invention lends itself to mass production in a very short time as compared to present methods. Excellent fusion quality is reliably obtained as compared to present methods.

Abstract: An automatic assembly machine having multiple assembling heads in which a multiplicity of parts are assembled on a principal part at different positions, characterized by comprising a movable table carrying the principal part, and a plurality of assembling heads, fixedly disposed above the table along the area of movement thereof, for feeding and assembling different parts, said table being driven under the control of a numerical control device for operating on the coordinates of a position corresponding to a selected one of said assembling heads and on the coordinates of positions on the principal part at which the parts are to be assembled.

Abstract: Apparatus for force fitting components into a workpiece comprises a gantry supporting two insertion heads above an indexable support for the workpiece, a workpiece pick-up station on each side of the workpiece, and rods by which the insertion heads are suspended from the gantry and which are rotatable to translate the insertion heads between positions over the pick-up stations and positions over the workpiece and to operate tooling of the insertion heads to pick-up components from the pick-up station and to force fit them into the workpiece. The apparatus is programmed so that when one of the insertion heads is located over a pick-up station the other is located over the workpiece.

Abstract: This machine essentially comprises: a contact-pin feeding head which drives contact-pins through holes in the adaptor having a pair of frames made fast with each other, but mutually movable, each of which carry one of two parallel superimposed perforated plates. The relative mobility of the two frames, and accordingly of the two adaptor plates, enables alignment, as the case may be during the step of inserting each contact-pin, of two homologous holes along the vertical line through the contact-pin feeding head. The various steps are controlled by a processor which has the configurations of the holes formed in the two plates, respectively, stored therein.

Abstract: A method and apparatus for feeding sliders to a slider pocket are disclosed. Sliders taken from the pocket are assembled on the fastening element sections of an uncut fastener chain which is moved and stopped intermittently to allow the assembly of the sliders, wherein sliders longitudinally aligned and delivered by a slider chute are fed into a slider holder one at a time. The slider holder carrying a slider received from the chute is transferred to a slider assembling station from a direction at right angles to the direction of fastener chain transfer, and the slider is loaded at the slider assembling station into the slider pocket which is provided at the upper end of a slider pocket block raised from the direction at right angles to both the fastener chain transfer direction and slider transfer direction, and the slider holder is returned to the exit of the slider chute. These steps are repeated in synchronism with the stopping of movement of the uncut fastener chain.

Abstract: Method of making electrical contacts by providing a continuous clad strip having a strip of contact material bonded to a base metal contact blade strip, removing contact material at spaced intervals from the strip, and severing the base metal strip in the intervals to form individual contacts in which the contact element is spaced inwardly from the margins of the contact blade.

Abstract: A razor blade assembly comprising a blade disposed between skin engaging elements adapted in operation to engage a surface being shaved ahead and behind, respectively, of the cutting edge, the blade being movable relative to the elements in response to forces encountered during a shaving operation, the blade assembly having pivot mountings thereon for pivotal attachment to a razor handle, whereby the blade assembly, as a whole, may be pivotally movable on the handle in response to forces encountered during the shaving operation, one of the skin engaging elements being provided with a water leachable shaving aid.

Abstract: A haircutting device utilizing a vacuum nozzle provided with an inclined intake end utilized as a guide for placement of the scissors and as a cutting guide for determining the length of hair left on the head of the person receiving a haircut with this length being adjustable by an adjustably supported ball type supporting structure movably engaged with the scalp of the person receiving the haircut. The vacuum nozzle is provided with a contour to facilitate the nozzle fitting against the rear surface of the hand with a strap arrangement being provided to secure the nozzle to the hand. In one form of the invention, the vacuum nozzle is associated with a self-contained vacuum motor and fan unit and collecting bag that is either battery powered or powered through a suitable power cord extending to a conventional electrical outlet.

Abstract: A folding fillet knife comprises a molded two-piece plastic or metal handle, a metal blade pivotally connected to the handle and pivotable between open and closed positions, and a latching member slidably mounted on the handle. The latching member is spring biased into a latching position wherein it engages the base end of the blade and either releasably secures the blade in closed position or positively locks the blade in open position. The latching member is slidably movable to an unlatching position either automatically (as the blade opens) to enable the blade to be pivoted from closed to open position, or manually to allow the blade to be pivoted from open to closed position.

Abstract: A powered trimmer is provided which cuts in the manner of a scissors rather than a saw. A plurality of cutting assemblies is arranged along the length of a generally horizontal support bar. Each cutting assembly includes a vertical shaft mounted with respect to the support bar and passing through the center of each of a pair of pulleys mounted for independent rotation about the shaft. A blade is affixed to each pulley. Drive means including an arrangement of endless belts and offset pulleys are provided to counter-rotate the upper and lower pulleys in each pair, and thus their corresponding blades, for the desired scissors-like cutting effect.

Abstract: A measuring device that performs a measurement of the amount of distance between a preselected reference point and a remote object. The device is made so that the measurement made is stored therein until the device can be retrieved from the remote location and brought to a location where it can be conveniently read. A first rotatably mounted, fixed position gear member is engaged by a first rack gear member which rack gear member is reciprocated by manipulation of a handle member. The first rotatably mounted gear member is fixedly secured to and disposed concentric with a second fixed position rotatably mounted gear member, and the second gear member engages a second rack gear member that is fixedly secured to a ruler member that is slideably mounted within a housing. Thus, manipulation of the handle member effects extension of the ruler from the housing or retraction thereinto.

Abstract: A robot or other manipulator has an end effector useful for gripping a part and performing an assembly operation to a second part, the assembly requiring, for example, an insertion and a rotation motion. A sensor is mounted between the manipulator and the end effector and comprises a pair of telescoping sections mounted for relative axial and rotational movement with springs for normally inhibiting any movement beyond a range caused by normal assembly forces. An excessive force caused by the failure of the parts to join normally results in a relative axial or rotational movement which is sensed by one or more cam operated switches. The switches are arranged to yield a plurality of signals which contain coded information on the specific type of overload movement. The information can be used by a robot or manipulator controller to stop the assembly operation and then to make the appropriate movements to solve the problem or to simply indicate to an operator the type of malfunction.

Abstract: A gauging head for checking linear dimensions of mechanical parts comprising a substantially cylindrical casing, a stem partially arranged for sliding movement within the casing, a feeler coupled to an end of the stem external with respect to the casing for touching the part, a transducer for providing a measurement signal and a cable for connecting the transducer to an external electric unit. An additional element can be removably and adjustably coupled to the casing for limiting the pre-stroke of the stem and another additional element can be removably coupled to the casing for defining the direction of exit of the cable from the gauging head.

Abstract: A connector for mounting a vehicle measuring system to a vehicle fixture hole includes spaced arms with projecting end lugs which evenly and symmetrically open and grip the material defining the hole so that the connector is centered with respect to the hole. Rotation of a thumb wheel operates a wedge arrangement to evenly spread the arms and securely tighten the connector to the material defining the hole. A bushing on the connector is connectible to the vechicle measuring system and is longitudinally adjustable to set a precise distance from the measuring system to the fixture hole.

Abstract: To determine the deviation of two juxtaposed cylindrical rollers from parallelism of their axes, the angle included between a reference direction (e.g. vertical) and a line tangent to the roller surfaces is measured and the process is repeated at another location axially spaced from the first one. The method is particularly applicable to calendering rollers in paper-making machinery or the like.

Abstract: An arrangement for mounting measuring devices of axle measurement equipment with a fastening plate that is adapted to be installed at the vehicle wheel aligned parallel to a flat reference surface of the vehicle axle by means of abutment pins extending through the wheel disk by way of through-openings. An incorrect alignment of the plane of the fastening plate which causes an incorrect adjustment of camber, toe-in or caster, is avoided with a completely satisfactory abutment of all abutment pins at the reference surface.

Abstract: A tool guide for directing hand tools over a workpiece at an angle perpendicular to one edge of the workpiece is disclosed. The guide has two perpendicular legs equipped with flanges for aligning the guide and directing a hand tool along the guide. Measuring units are provided along surfaces of the guide to allow it to be used alternately as a carpenter's square and to facilitate carpentry operations without premeasuring. The flanges are shorter than the legs to provide cutouts for clamp removal and a cross brace enables the guide to be optionally stabilized without clamps.

Abstract: Apparatus for ultraviolet light curing by photopolymerization of ultraviolet curable ink printings on the external surfaces of tubular articles, such as plastic, glass or metal bottles, jars or other containers. The tubular articles are placed in an upright position on a rotating disc in a housing which carries them through an ultraviolet radiation field emitted by an appropriate ultraviolet source, and reflected by specially shaped reflectors to provide intense ultraviolet radiation in the entire housing and thereby eliminating the need to stop and spin the articles in front of the ultraviolet source to achieve complete curing around the entire article. An elongated guide is mounted to extend partially across the upper surface of the table, and as the table rotates it serves to move the articles against the guide which causes them to rotate about their respective vertical axes so that the entire peripheral surface of each tubular article is exposed to the ultraviolet radiation.

Abstract: Dehydration tower (22) for previous agitated organic material carried by a heated air stream, the tower containing a selectively rotatable series of baffles (42, 43, 44, 45) for varying the path length of the material, and thus the residence time, in the tower, as the material passes up the tower on one side of the vertical series of baffles (49) and then down the other side of the series.

Abstract: A running sole for a shoe comprising a sole body 1, having a generally longitudinally extending first recess 5 extending from the one edge of the sole and at least one laterally extending second recess 6, 7, extending from the side edges of the sole in the heel region, said at least one second recess intersecting the first recess, a first supporting body 10 of springably compressible and/or flexible supporting material exchangeably inserted in said first recess and having at least one opening 11 inside thereof aligned with the second recess 6, 7, and at least one second similar supporting body 16, 17 inserted in said second recess(s) 6, 7 and engaging in said opening or openings to lock said supporting bodies in position.

Abstract: A pistol comprises a substantially U-shaped magazine catch, which is slidably mounted in a track that extends transversely to the longitudinal direction of the magazine. One leg of the magazine catch constitutes a pushpiece. The other leg of the magazine catch constitutes a locking member, which extends into a lateral slot of the magazine. A compression spring is provided, which extends along the track and holds the magazine catch in engagement with the magazine. To facilitate the alteration of the pistol from a condition for use by a right-handed person to a condition for use by a left-handed person, the track is provided in the detachable trigger guard and is open toward that surface of the trigger guard which adjoins the grip. The crosspiece of the magazine catch has a recess, which receives an abutment member, which is held in the track by stop noses against a movement along the track.

Abstract: An audible and visual signal for an indicator for fishing in which the signal includes a resilient wire and a releasable line catch which holds the resilient wire. The indicator is to be mounted on a fishing rod in either of two positions: in one position the line catch is co-planar with respect to the rod and in the other position, the line catch is offset therefrom.

Abstract: An articulated fishing lure is comprised of at least a front and a tail section which are connected with minimum longitudinal separation between sections for oscillation of the tail section relative to the front section to simulate the action of an injured minnow. The front of the tail section is hollowed and the point of articulation of the tail section to a drawbar fixed to the rear of the front section and extending rearwardly therefrom in an axial direction is between the front edge and centroid of the tail section. The rear end of the front section is hollowed to permit freedom of oscillation of the tail section relative to the front section while maintaining minimum longitudinal separation between sections.

Abstract: A fishing lure comprises a flexible lure body having a preformed cavity therein. The cavity has a leading end and a trailing end, and the lure body has an insert opening through the exterior thereof into the cavity. An insert mounted in the cavity is selectively removable therefrom through the insert opening. The insert has a leading end disposed adjacent the leading end of the cavity and a trailing end disposed adjacent the trailing end of the cavity. The insert is either preformed with or forcibly malleable to assume a configuration differing from that assumed by the cavity in a relaxed condition without said insert therein. The insertion of the insert into the cavity will thus cause deflection of the lure body in a direction from the leading end to the trailing end and alter the external configuration of the lure body.

Abstract: A device for winding leaders, wherein the device will securely and protectively wind leaders of any length, regardless of whether the ends of the leaders terminate in hooks, swivels or loops. Separate leader winding recesses are provided which encircle the device. For leaders having leader lines with some elasticity, the leader is wound on the device under tension. Alternatively, for leaders having any type of leader line, whether elastic or non-elastic, the wound leaders are passed under tension over an elastic member extending about the periphery of the device, thereby deflecting the elastic member. The tension of the wound elastic leader line or the deflected elastic member maintains tension separately on each wound leader to keep it from tangling and to keep its ends securely anchored. Various anchor points for the hook, loop or swivel on the end of each leader, and different winding paths for each leader are provided to assist in winding leaders of any given length and any given type.

Abstract: A safeguard system is provided to prevent unauthorized entry through an open window of a casement in which said window is vertically positionable. The system involves a barrier apparatus comprised of two framed gridwork panels in horizontally spaced coplanar juxtaposition. The spacing between the frames is adjusted by a coupling pin which insertively engages matching apertures in an extension arm and a horizontal border of a frame. A locking device is provided to prevent vertical movement of the window away from engagement with the barrier device.

Abstract: A device for suspending and guiding an oblique-displacement sliding door, especially for railroad cars, comprises a rolling element which is attached to the door by means of a connecting member (4) and comprises two rollers (Gs, Gi) mounted within a tubular guide track (6). The rolling surfaces (6a, 6b, 6c, 6d) of the guide track (6) are located in oppositely-facing relation on each side of the connecting member (4) and at an oblique angle with respect to this latter. The profiles of the two rolling surfaces and of the two rollers are adapted to each other so as to prevent translational displacement of the rolling element (2) in a plane transverse to the guide track (6).

Abstract: A door assembly is provided and generally includes a door frame having a door hingedly mounted on one of the jambs of the frame. The door includes stiles and rails with double glazing panels mounted between the stiles and rails with an insulating air space between the glazing panels. First and second weatherstripping members cooperate with the door and jambs of the door frame to provide substantially air-tight and water-tight seals, respectively, when the door is closed within the frame. The first and second weatherstripping members are spaced apart so as to define a weatherstripping air space therebetween. The door includes passages for providing communication between the insulating air space and the weatherstripping air space so as to minimize condensation between the glazing panels.

Abstract: A magnetic door edge guard for the trailing edge of a swinging metal closure such as an automobile door comprises an elongate non-metallic body of generally U-shaped cross section which contains a plurality of permanently magnetized elements for attaching the edge guard magnetically to the trailing edge of the swinging metal closure. In one embodiment the permanently magnetized elements comprise wires extending lengthwise of the non-metallic body. In another embodiment the permanently magnetized elements comprise metal fragments distributed throughout the extent of the non-metallic body.

Abstract: A method and an apparatus are described for superfinishing convex or concave jacket faces of rotationally symmetrical workpieces, in particular of roller bearing rollers, in which the workpiece is received and rotated between two rotatable rollers, at least one of which is driven, while a honing stone is lowered perpendicularly to the longitudinal axis of the workpiece against the jacket face and thereby executes an oscillation parallel to the longitudinal axis of the workpiece. Along at least a portion of its stroke movement, the honing stone is imparted a further oscillation, synchronous with the first, along a curved path located in the jacket face of the workpiece.

Abstract: An improved drain shield for eave gutters is provided in the form of screen sections adapted to be assembled in end-to-end relation along an eave gutter, such sections being of a width to overlie the gutter and first course of shingles and to extend under the second course of shingles for mounting purposes, such screen sections being formed of woven wire screening suitably having aligned square openings measuring approximately 1/4-inch on the side, each screen section being deformed intermediate its front and rear edges and at a location to align with approximately the middle one third of the first course of shingles to dispose one line of said square openings perpendicular to the plane of the screen section, the portion of the screen section overlying the gutter thereby being raised approximately 1/4-inch above the mounting portion, the perpendicularly disposed line of openings providing means for diverting water into the gutter while causing leaves and other debris to be carried over and discharged beyond t

Abstract: In this ridge or hip covering, flexible sealing strips (9) are arranged between the covering caps (7) fastened to the ridge or hip board (6) of the roof structure and the roofing tiles (3).In order that the sealing strips (9) can universally be used with the most different roofing tiles and roof pitches, they comprise a flexible supporting strip (10) which is provided on one or both longitudinal edges (11) with a comblike edge part (12) of elastically deformable material, the teeth (12a) of which are connected with an edge strip (13) of flexible material which bridges the tooth spaces allowing the teeth to spread, whereby the outer longitudinal edge (14) of the edge strip adapts to the contour of the upper side of the roofing tiles (3) lying below it.If with the sealing strips (9) both a sealing against rain and driving snow and a ventilation of the roof space is to be made possible, an air-permeable bonded fabric, in particular of polyester or polyamide fibres, can be used for the edge strip (13).

Abstract: By providing a fully equipped, prefabricated, self-contained building, completely constructed with all exterior and interior walls and roof, but having no floor, floor members or floor-supporting members, a unique, prefabricated, preconstructed, self-contained building is achieved, ready for installation on a floor forming foundation to complete the building construction. In the preferred embodiment, the prefabricated, preconstructed building incorporates an interlocking tenon and mortise construction at each interconnecting corner of intersecting wall members.

Abstract: A building structure includes outer walls, a roof including a lower border that overhangs at least one of the outer walls, and a frame for supporting the outer walls and roof. The frame includes a frame member forming part of an upper portion of the one outer wall. The frame member has a top edge adjacent the roof and a bottom edge. A wall panel is secured to the frame adjacent the bottom edge of the frame member, such that the panel forms the lower portion of the one outer wall. The structure also includes at least one spacer member supported on the top edge of the frame member. The spacer member has a side surface that forms the upper portion of the frame and a top surface at an acute angle with respect to the side surface that supports a roof member to provide the lower border of the roof. The building structure also includes a shelf member positioned between the top edge of the frame member and the bottom surface of the at least one spacer member.

Abstract: A framework for use in constructing a building that is capable of rapid assembly and disassembly is disclosed. The framework includes a plurality of spaced column members joined at their upper ends by beam members, the joinder being effected by means of aligned pin receiving means on the column and beam secured with a pin. Means are provided within the framework to receive, without the need for fasteners, wall panel members and roof panel members.

Abstract: A plurality of different types of building blocks are fabricated to include a respective coding for each different type, which coding in the preferred embodiment is a color pigmentation. Associated with the building blocks is a pattern marked with indicia which define, by full-scale markings, locations of the lowermost building elements of the predesigned, pre-engineered structure to be constructed by the present invention. Associated with the coded building materials and pattern is a coded diagram depicting the completed predesigned, pre-engineered structure by means of coded objects, coded in correspondence with the coded building materials, showing the numbers and location of each type of building material within the structure. The manufacturing of a kit of these elements and the method of erecting the structure from such a kit are also disclosed.

Abstract: A construction panel is comprised of an originally planar, deformable sheet shaped to provide a number of pairs of fins outstanding from the sheet at substantially right angles. Each pair of fins is also disposed to merge at substantially right angles with one of a number of preferably circular cylinders each having its axis spaced from the plane of the sheet and from the axes of adjacent cylinders so that two comparable construction panels can be arranged with their cylinders interspersed preferably with each cylinder tangent to a sheet plane and to adjacent cylinders.

Abstract: Poke-thru has floor fitting serviced by a thru floor unit in a bore in the floor and carries power and/or communications conductors. The thru floor unit comprises a pair of mounting screws which extend down through the floor fitting base with the heads engaging the base. The mounting screws carry a flexible finger type retaining clip to grip the side of the bore. Above the retaining clip, on the mounting screws, are top separator means which maintain the clip and base a fixed distance apart. Intumescent material and a top spacer are loosely disposed in the space between the clip and the base. Below the retaining clip, on the mounting screws, is a bottom spacer. Below the bottom spacer are top and bottom retainers held a fixed distance apart by separator means. Intumescent material is loosely disposed in the space between the top and bottom retainers. The bottom retainer has nuts in which the screws are threaded.