Abstract: A positioning mark of a soft magnetic film is provided at the center of a master disk, and a beam from a light source irradiates the position of the mark. When a optical reception sensor using a CCD recognizes the mark, the recognizability of the positioning mark can be improved by using a wavelength selective filter or a laser as the light source. Additionally, the recognizability of the positioning mark can be improved by forming the positioning mark using a material other than a soft magnetic material.

Abstract: A time counting device, a cache memory and a copy control circuit are added to a conventional disk drive so that recorded information is copied periodically and automatically. Alternatively, a cache memory, a copy control circuit, a reference control circuit, a first time counting device and a second time counting device are added to the conventional disk drive so that information which remains recorded for a predetermined period of time after its last recording date is automatically copied. According to another embodiment, a reference signal is recorded in advance and a reproduced output is periodically measured. If the reproduced output is lower than a reference value, recorded information is automatically copied. According to yet another embodiment, the temperature in the disk drive is measured by a thermometer 18, and if the temperature is higher than a reference value, information is automatically copied at shorter intervals than when the temperature is less than the reference value.

Abstract: A roof mountable pipe flashing unit allows penetration of the roof surface by a single pipe while effectively weather-proofing the site of penetration. A selectively separable sealing element enables a weathertight seal to be formed with pipes whose diameters fall within a selected range.

Abstract: Mechanically fastened appended tabs invisibly secure common edge-abutting wallboard panels to common wood or metal framing members. The fastener appendants are spaced apart tabs extending from the back of and exposed beyond the vertical edges of the wallboard panels so as to be conveniently screw fastened. When screw fastened to common wall framing members, the appended tabs secure the wallboard panels slightly off the framing member front surface to permit offset appendant tabs of abutting wallboard panels to slide between the fastened wallboard panels and the framing members and be engaged by the fastened wallboard panels in a tongue and groove relationship.

Abstract: A structural connection between adjacent ends of vertically superimposed precast columns in a structural framework of precast beams and columns. As in precast columns of the prior art sections of tubing are cast in the columns and extend longitudinally of them. However, the tubing at one end of the columns, rather than terminating at or just beyond the column end face, projects outwardly of the column a substantial distance, preferably through an opening formed through a beam at a beam-column intersection where the column joint is formed, and one end of a spindle is received in this portion of tubing and also in a second portion of tubing projecting only a slight distance from the opposite end of the adjacent column. A washer or washers may be loosely attached to or merely slipped over the spindle to engage the opposed ends of the tubing and transfer loads from an upper to a lower column. This construction provides shorter length spindles and a direct transfer of loads from upper to lower columns.

Abstract: A repair kit for holes in walls including a thin flexible support plate dimensioned to bridge a hole to be repaired, a cooperating reaction member also arranged to bridge the hole, and means for holding the plate and reaction member against opposed wall surface adjacent the hole.

Abstract: The station, including access stairs and elevator systems are supported by a single vertical girder to reduce the space requirement for the station in a crowded inner city. Various components of the station may be prefabricated and then joined together at the site to standardize and reduce construction costs, and to reduce construction interference at the station site.

Abstract: A "Wall Member" which comprises an elongated substantially rectangular extruded mono-shell defining an inner core, extruded in indefinite length, after which it is cut to the required dimension. The shell is made of low heat expandable material and contains an insulating material therein. The shell is formed with two vertical faces one of which having a permanent building exterior finish and the other having a permanent building interior finish. This interior vertical face is also provided within its main core, with an adjacent integral conduit therein for horizontal electrical leads. The shell is additionally formed with two horizontal upper and lower faces which are adapted for engagement over one another, such as by tongue and groove. These "Wall Members" are also adapted for connecting their ends which are provided with upper and lower hard surface fins to a structural vertical member such as a Post, window or door frames or another "Wall Member".

Abstract: The assembly comprises a spun metal lower pole terminal portion having a plurality of apertures formed toward its lower edge. The terminal portion is placed over a concrete slab or other appropriate base having a plurality of spaced upstanding bolts protruding therefrom. The apertures are large enough to enable the installer to insert a special clamp through each aperture. The clamp has a bifurcated end portion which straddles one of the bolts whereas its other end portion protrudes somewhat through the aperture and has a portion in a vertical plane which acts to prevent lateral movement of the lower terminal portion. The installer then screws nuts over the bifurcated portion and the increased downward pressure is transmitted to a number of protuberances formed on the lower surface of the clamp which act to crush any small pebbles or solid aggregate appearing on the upper horizontal surface of the concrete slab.

Abstract: A parquet floor element is disclosed which comprises a facing layer defined by edges forming a closed contour, a backing panel of indented peripheral shape, and means for fixing the facing layer to the backing panel, the latter being associated with the facing layer in such a manner that the said teeth partly project relative to the edges of the facing layer, the intervals between the teeth in part receding relative to the said edges with a regular sequence, along the whole of the contour of the facing layer, of teeth projecting relative to the said edges and intervals between the teeth receding relative to the said edges.

Abstract: Siding boards, shingles, shakes, or the like are applied to the wall of a building by use of a tool having an arm which extends upwardly adjacent the wall structure and is temporarily secured thereto, with the siding or the like then being placed at the outer side of the tool arm, and being supported at a predetermined level by a projection extending outwardly from a lower portion of the arm, so that the siding can then be nailed to the wall structure and the tool can ultimately be withdrawn from its position of reception between the siding and wall structure for use in similarly positioning and securing a next successive layer of siding, shingles, etc. to the structure. Preferably, two such tools are employed at horizontally spaced locations for supporting the siding or the like therebetween.

Abstract: In metal buildings, a plurality of purlins project down into the building and, in effect, serve as heat exchange fins, which conduct heat into the building in warm climates, and heat out of the building in cold climates. In order to counteract this phenomenon, each purlin is covered with a separate blanket of insulating material, which is held in place with a flexible sleeve that is laminated to the blanket. Two additional flexible sliding sleeves are used to complete installation at each end of the purlin.

Abstract: A bundle of three or more rows of end-joined cans (preferably in multiples of two rows) arranged around an axis of the group, clamped into a unit by flexible ties, such as: loops of adhesive strapping tape: apertured strips or tapes of thin metal, cloth or plastic, with tape ends fastened together by adhesive on the tape, or bolts, rivets or the like thru tape-end or network apertures, or snap fasteners with a stud on one end of each cloth or plastic tape loop and a crown on the other: loops of cord with bands; or the like. This bundle may be used on the tubular framework of a wall, ceiling or roof of a stationary building, mobile home, trailer or vehicle, the framework preferably stuccoed on one side and stuccoed, plastered or otherwise wall-finished on the other.

Abstract: A vehicle sun-shade of the louvre type formed from plastic wherein sagging due to high temperature imparted to the plastic is reduced by the use of a spacer rod passing through bushes in which it is frictionally engaged, the bushes being in the louvres and between their ends.

Abstract: Metal roofing shingles including triangular shaped gable and eave starting shingles and square or rectangular shaped shingles covering the main body of the roof, the shingles being laid in courses whereby their edges run at an angle from the gable ends and eave edges upwards towards the ridge of the roof and under a ridge cap. Each of the shingles is secured to the underlying roof structure by a roofing nail passing through the uppermost corner of the shingle. The lowermost edges of the shingles are interlocked over and under the uppermost edges of adjacent shingles and have their lowermost corners overlapping the uppermost roofing nail secured corner of adjacent shingles. The edges of the triangular shaped shingles adjacent to the gable ends and eave edges of the roof are folded under and inwards in locking engagement with folded protruding edges of gable and eave starter lengths of formed sheet material which have been secured to the gable end and eave edges of the underlying roof structure.

Abstract: A method and apparatus for applying insulation material to the sidewalls and endwalls of a building structure. The apparatus is disposed parallel and adjacent to the top of the wall. A roll of insulating material is mounted on the apparatus and fed downward along the side of the building wall and parallel thereto. The end of the insulating material is attached to the bottom of the wall and the insulating material is tightened and held in place by a tension means which is part of the apparatus. The insulating material is then attached to the top of the wall and cut free from the remaining insulating material on the roll. The apparatus is then moved along the top of the wall to a position where the insulating material can be fed downward adjacent to the attached insulating material. The method is then repeated.

Abstract: In "flying forms" having a plurality of trusses -- usually two -- with a plurality of beams placed across the trusses and a deck placed on the beams, an extension leg for the truss is provided so that the working height of the truss may be nearly twice its flying height. The extension leg replaces a truss upright, and mounts using the same bolting arrangement therefor. The leg comprises inner and outer legs, where the outer leg is secured to the top and bottom chords of the truss, and the inner leg is telescopically engaged within the outer leg. The shape of the inner leg is such as to accommodate the bolts which secure the outer leg to the truss chords. Holes are formed in the inner and outer legs with predetermined spacings, and pairs of pins are used to lock the inner leg in any desired position with respect to the outer leg at substantially the desired height.

Abstract: A truss joist includes an upper chord, a lower chord and a series of links. The series of links connects the upper and lower chord and terminates in an end link which is attached to the lower chord and extends upwardly toward the terminal portion of the upper chord. An end bracket which partially surrounds the terminal portion of the upper chord includes a U-shaped channel which contacts the side and bottom surfaces of the upper chord. The U-shaped channel further comprises a pair of downwardly projecting legs for connectively receiving the flattened end portion of the end link. One embodiment of the end bracket lies directly upon the upper surface of a support member. Another embodiment is flush-mounted against the inner surface of the support member and has a horizontal flange which extends over the upper surface of the support member. Additional embodiments of the end bracket include adjustable bracket elements mounted below the U-shaped channel and on either side of the downwardly projecting legs.

Abstract: A swimming pool construction has an outer shell defined by a plurality of metal sections which are secured to each other and have substantially vertical walls defining the swimming area of the pool. Each metal section includes a coping support extending outwardly of the swimming area in a horizontal direction from the upper end of each vertical wall, and a coping is secured to the coping support about the outer periphery of the swimming area. Transversely spaced sockets for receiving one end of transversely spaced handrails of a swimming pool ladder are secured to the outer end of the coping support prior to the formation of a concrete deck or walk around the outer periphery of the swimming pool. Structural supports are secured to the outer shell of the swimming pool to provide support for the concrete deck or wall. The structural supports extend outwardly of the metal sections of the pool and support horizontally disposed, top angle members which are disposed outwardly of the coping.

Abstract: A building construction modular system utilizing interlocking building blocks made of aggregate material and having opposite side faces vertically and horizontally offset from the main body portion of the block. A structure, such as a wall, is erected by laying superimposed horizontal courses of vertically interlocked blocks, the blocks of a course being interlockingly supported by the blocks of the subjacent course. Each block element is provided with a vertically disposed passage or aperture and with a vertically directed recess at each lateral end of the block where it interlocks with an adjoining block element and the integrally formed transverse walls joining the side faces of each block are appropriately apertured such that, after the wall has been erected, cement is poured into the block structure from the tops of the blocks on the upper course, so as to flow vertically and horizontally through the passages and apertures within the blocks.