Abstract: There is disclosed a ventilator for use with windows, doors, or other building hardware. The ventilator includes an inner plate having air vents and an outer plate spaced apart from the inner plate in the transverse direction of the ventilator and providing an opening displaced from the air vents. Provided between the inner and outer plates are a filter and a partition extending from the inner plate toward the outer plate until it abuts against the filter. The partition is adapted to direct a flow of air from the opening to the air vents at least twice through the filter. The ventilator is prefabricated as a unit and is easily installed within the windows, doors and the like.

Abstract: A tool for interengaging a pair of element rows in a concealed type slide fastener has a pair of blocks movable toward and away from each other and normally urged apart, and a pair of slider body halves mounted on the blocks, respectively, the slider halves being matable to provide a slider body when the blocks are moved toward each other. An element guide is formed centrally on the bottom surface of a pivotable member operatively connected to the blocks. The pivotable member is movable pivotally into a position in which the element guide and the slider body halves are put together to jointly provide a slider when the blocks are moved toward each other. A motion converting means is provided for converting motion of the blocks into pivotal motion of the pivotable member.

Abstract: A slide fastener having at its top end a slider escape mechanism which comprises a cooperative pair of yieldable top stops, and an extra length of fastener elements carried on one of the stringer tapes, such that the slider can be forced past the yieldable top stops to ride onto the extra fastener elements in an emergency and hence to release the other stringer tape. To permit ready withdrawal of the said other stringer tape from the slider, a reinforcing sheet of thermoplastic material or the like is heat-sealed or otherwise attached to its upper end portion, from which at least the bead of the tape is removed. The fastener can be forced open from its top end without pulling the slider down along the rows of interlocking fastener elements.

Abstract: An emergency opening slider to be mounted, in addition to the usual fastener slider, in any selected position on interlocked rows of fastener elements to permit the fastener to be forced open from the selected position in an emergency. The slider body has a guide channel therethrough which consists of contracted terminal portions at both ends and an expanded midportion, with the latter portion divided into a pair of branch channels where the rows of fastener elements are incapable of interlocking engagement. The slider body includes a portion or portions which, upon application of operating force as through a pull string connected thereto, are displaceable to permit disengagement of the fastener elements.

Abstract: A sash or a door has a vertically adjustable top rail by which the vertical size of the door or window is adjusted to suit the opening in a window frame or door frame, there being an adjusting device by which the top rail is selectably positioned. The adjusting device includes a supporting member for being secured to a vertical surface beneath the top rail, a wing projecting horizontally therefrom and disposed at one side of the supporting member, and an adjusting screw carried by the horizontal wing and engageable with the top rail from below.

Abstract: For suspending a sliding door from a pair of parallel spaced overhead tracks, there is provided a dual-roller support comprising first and second separate sections each comprising a roller and its mount. Only the first section is directly affixed to the top edge of the door. Thus, for installation of the door, the roller of the first section is first manipulated into rolling engagement with one of the overhead tracks thereby temporarily suspending the door therefrom. The second section is then bolted to the first section, with the roller of the second section in rolling engagement with the other overhead track.

Abstract: A reinforcement is provided for reinforcing a longitudinal edge of a stringer tape for a slide fastener, which reinforcement consists of an elongate core member and a tubular member holding the former centrally in place. The tubular member is a warp-knitted fabric formed by a Raschel or tricot double-needle knitting machine, the fabric having sinker loops interconnected with corresponding needle loops and urging the latter into fastening engagement with the core member.

Abstract: A ventilator, constructed to serve as a horizontal rail in a building component, includes a pair of spaced apertured plates, the aperture of one being an air inlet vertically spaced below that of the other which is an air outlet, and filter and baffle means disposed in the path between said apertures, and so arranged that an air current flows through the filter at least twice.

Abstract: A replaceable front cover is attached to an upholstered seat, as of a passenger car, by means of a slide fastener. The fastener comprises a pair of completely separable stringers, one of which is secured to the front cover and the other to the seat.

Abstract: A slide fastener stringer tape comprising a major region made of a knitted fabric with an open, net-like texture, and a relatively narrow scoop-carrying region made of a warp-knitted fabric. The major tape region is longitudinally subdivided into several subregions of progressively finer mesh size from the one lying along one of its longitudinal edges to the one lying along the other longitudinal edge. The scoop-carrying region is arranged next to and along the finest mesh subregion of the major tape region, for supporting thereon a row of scoops of any desired type.

Abstract: A slide fastener stringer tape of a warp-knitted structure is disclosed which is adapted for mounting thereon a row of interlocking fastener elements. The warp-knitted stringer tape has the interwale groove at the tape edge along and through which a line of element-sewing stitches passes. The interwale groove is defined between the outermost wale and an adjoining wale and is provided therein solely with tricot sinker loops which connect these wales together in each course. This arrangement is such that the sewing needle can be directed to and through any optional position of the interwale groove without having regard to the position of the courses.

Abstract: In a two-way closable slide fastener having a pair of sliders arranged reversely to each other on interlocking rows of fastener elements, one of the sliders has a tongue projecting forwardly therefrom, whereas the other slider has a socket for receiving the tongue. Built into the socketed slider is a key-operated lock mechanism including a bolt which can be shot into and withdrawn from the socket by manipulation of the key. When the tongue is inserted into the socket upon closure of the fastener, the bolt selectively engages and disengages the tongue for locking and unlocking the sliders.

Abstract: A slide fastener of the concealed or masked type comprises a pair of opposed support tapes each having a longitudinal edge portion folded on itself and rows of interlocking fastener elements secured to the folded edge portions of the respective support tapes. The tape is made of a warp-knit fabric having on one surface a multiplicity of alternate wales and interwale grooves. A particular wale disposed close to the path of a sewing needle is formed with fewer knit threads than the remaining portions of the tape to reduce the loop density thereat and hence renders this wale portion flexible to permit the tape to yield itself to the sewing pressure.

Abstract: A paneled door construction comprises a pair of first and second stiles, top and bottom rails connecting the stiles together, a muntin extending vertically between the top and bottom rails, and a pair of block assemblies disposed between the first stile and the muntin, and between the second stile and the muntin, respectively. The block assemblies each include a pair of inner stiles spaced apart horizontally from each other and extending vertically between the top and bottom rails, and alternate blocks and block-parting members sandwiched between the inner stiles. The blocks and block-parting members are attached by screws to the inner stiles by bringing the former into contact with the inner stiles, and then threading said screws into the blocks and the block-parting members through the inner stiles.

Abstract: A roller is rotatably supported by a roller holder which in turn is supported by a mounting frame so as to be adjustably displaceable downwardly relative to the latter when pressed by an adjusting screw. The adjusting screw includes a flange fixedly mounted thereon just below its slotted head, and the mounting frame has stop means engageable with the flange on the adjusting screw to restrain the latter from movement in its loosening direction.

Abstract: A warp-knitted fabric having a plurality of seams disposed at predetermined intervals in a transverse direction of the fabric and extending longitudinally of the fabric. Water-soluble fibers or threads soluble at a first temperature join alternate ones of the seams and water-soluble fibers or threads soluble at a second temperature higher than the first temperature join the remaining seams. The water-soluble fibers or threads may be of polyvinyl alcohol.

Abstract: A jointing device for securing a horizontal frame member to a vertical frame member comprises a strip having its longitudinal ends extending beyond the vertical width of the horizontal frame member and including a central portion extending substantially over said vertical width. There are provided first holes formed through the central portion of the strip and second holes formed adjacent the longitudinal ends of the strip. The strip is first screwed to a longitudinal edge of the horizontal frame member through the first holes and then screwed to an inner wall of the vertical frame member through the second holes, thereby coupling the frame members together.

Abstract: A window sash balancer is provided for use with slide-out sash windows, double-hung sash windows or the like. The balancer includes a housing, a shaft rotatably supported in the housing and having one end projecting beyond the housing, and a spring disposed within the housing and having one end secured to the housing and the other end to the shaft. The spring normally biases the shaft in one direction of rotation. The shaft has at its projecting end a drum of a frustoconical shape around which there is wound a wire member. A cord is provided in and along a spiral groove defined by adjacent turns of the wound wire member and has one end secured to the drum, the other end being adapted to be connected to a window sash.

Abstract: A post of uniform cross sectional shape for installation uprightly on the outside of a balustraded window or the like for use as one of the supports of the balustrade. The post includes a pair of opposite side walls each having an undercut groove formed lengthwise thereon. A pair of brackets of identical construction are provided separately, each comprising a mounting plate at one end and a pair of clamping jaws at the other end for engaging the post therebetween. The mounting plates of the brackets can be screwed to the window frame, and the post engaged between the clamping jaws of each bracket is connected thereto by a bolt inserted into and through a hole in each jaw and secured by a nut received in one of the undercut grooves of the post.

Abstract: A coupling element for a slide fastener comprises a head portion of substantially uniform thickness, and a coupling projection projecting from one surface of the head portion. A pair of tape edge clamping legs extend from the head portion in spaced-apart relation to each other. The legs have inner flat surfaces which face each other and are adapted to grip a tape edge in surrounding relationship therewith, and a pair of outer convex surfaces which face away from each other and with which a slider is slidably engageable when the latter is manipulated to open and close the slide fastener. Each of the legs is transversely tapered from the outer surface toward the inner surface to provide trapezoidal transverse cross-sectional shape thereof. A method of making the coupling element is also provided.