Abstract: A device for binocular viewing of residual light in the visible and the near infrared spectrum, comprising an optical input system, at least one singular image intensifier of the non-inverting type, a collimator, two ocular paths parallel with the axis of the device, and an optical output system associated with each ocular path, which is arranged so that a single image inversion is performed in each ocular path.

Abstract: A guide including one or more members formed from planar material, such as paper, is removably attached to a slide fastener. Article edge portions bordering an opening in an article are removably attached to the guide. The guide retains the edge portions of the article in position relative to the slide fastener during sewing of the edge portions to the slide fastener.

Abstract: Flat out fanning beams of penetrating radiation in the plane of a slice of an object are bounded on one side by an axis of rotation through the object and extend on the other side past the object exterior. These beams are produced at corresponding angles of the rotation and impinge upon a continuous detector surface which is scanned at each angle to generate half profile signals which may then be processed to produce parallized profile signals.

Abstract: Sliders for slide fasteners are disclosed including (1) one or more locking projections extending into outer lateral regions of a main slider channel portion, (2) an inclined divider post, (3) lateral tabs for enabling assembly of pull-less slider, and/or (4) an asymmetric locking projection on a divider post.

Abstract: Molded coupling elements are formed without draft in the locking portions, such as the locking protrusions, and are formed with double draft in passive portions, such as the neck area, to provide increased locking strength and operational clearance for slide fastener flexibility.

Abstract: Successive portions of a continuous polymer filament are plasticized such as by localized heating with ultrasonic or thermal energy, and the plasticized (plastified) portions are molded in one or more cavities to form articles such as slide fastener elements. Additionally there is disclosed the attachment of a thermoplastic slide fastener coupling element to the edge of a tape by surrounding the leg portions with walls of cavities in a pair of ultrasonic members and applying ultrasonic energy through energy directing projections located centrally within the cavities to the pair of legs to fuse the legs to the edge of the tape.

Abstract: A portable negative pressure respirator shell comprising a plurality, typically two, of rigid shell sections co-operable to provide an open ended shell for a patient's torso. Variable resilience flexible sealing lips are disposed along the top and bottom edges of the shell sections to aid in providing an airtight engagement with the body surface of the patient on the application of a negative pressure to said chamber, which engagement may be relieved by a suitable greater pressure in said chamber. The sealing lips are advantageously of reducing thickness and directed inwardly. Also disclosed are a power unit and reciprocatory valve for use with the respirator.

Abstract: Apparatus for applying liquid to a moving strip includes a conveyor, a reservoir for the liquid, an array of multiple nozzles arranged above and transversely of the conveyor, and multiple remote controllable valves actuable by a programmable electronic control to cause respective streams of liquid received from said reservoir to issue from the nozzles onto the strip in accordance with a predetermined pattern. A multiplicity of fluid distributors are provided between the valves and the nozzles so that one or more repeats of the pattern occur across the strip. The lengths of the fluid lines connecting the nozzles of each group to its distributor are substantially equal. Novel fluid distributor construction are also disclosed.

Abstract: A slide fastener installation is disclosed in which the trains of coupling elements are adhesively mounted on the article into which the slide fastener is to be installed without the use of mounting tapes. In making this installation, the interlocked trains of elements are mounted on the fabric before a slit is made in the fabric to provide an opening to be closed by the slide fastener.

Abstract: The leg portions of a continuous molded coupling element are bonded together to reinforce the attachment of connecting threads embedded in the leg portions, and a longitudinal cord is laid in grooves formed in heels of the leg portions to improve the stability of the coupling elements.

Abstract: An apparatus for simultaneously feeding a slide fastener chain and folding back article members attached to an outer edge portion of one or both tapes of the slide fastener chain includes a pawl arrangement slidably mounted in a first elongated member for engaging and advancing fastening elements of the slide fastener chain retained in a channel formed between the first elongated member and a second elongated member. A guide is attached to one of the first and second elongated members for folding the article members back as the slide fastener chain is advanced.

Abstract: A woven slide fastener stringer includes spaced coupling elements molded on spaced parallel connecting threads with reinforcing projections extending from respective leg portions of the coupling elements along upper connecting threads. The reinforcing projections have lower surfaces which are inclined relative to the connecting threads to produce substantially stronger reinforcing projections.

Abstract: Dyeable and dyed polymer-coatings on metal articles such as sliders, buttons, buckles, clasps, nuts, bolts, hooks, etc. include a substantial quantity of active proton acceptor groups relative to the number of polymer molecules in order to provide adequate dye pick-up.

Abstract: A fastening element for detachably connecting two plate-like components is disclosed as including a headpiece having a projection that can be passed through an elliptical hole in the first component and locked therein by rotating the element in one direction, and a square shaft opposite the headpiece that can be locked within a square hole in the second component by rotating the element in the opposite direction.

Abstract: Gapping of slide fastener tapes is performed by cutting longitudinal connecting and supporting members carrying fastening elements on both sides of each element to be removed along perpendicular cutting lines. The fastening elements are then removed by pulling the fastening elements and the severed ends of the connecting and supporting members from between loops of weft threads which secure the connecting and supporting members in the inner edges of the tapes.

Abstract: A slide fastener installation is disclosed for use in a sleeping bag, jacket or other article. The slide fastener installation is formed from one continuous slide fastener stringer and one end of the installation is formed by that stringer being looped back on itself. A separating end stop is formed at the other end of the installation and includes a separating end device formed by removing the head portion from a series of coupling elements.

Abstract: Separating slide fastener tapes are installed on opposite article portions by first sewing one of the article portions to one half of a single slide fastener stringer tape section, and then sewing the other article portion to the other half of the single slide fastener tape section which has a retainer at one end and a pin member at the other end. The single slide fastener stringer tape section is severed between the sewn article portions and the article portions are finished to secure the severed ends of the single slide fastener tape section. A slider may be installed on the retainer half of the slide fastener stringer tape section at any time during the manufacture of the slide fastener stringer tape section or the attachment of the article portions prior to the finishing of the article portions.

Abstract: A chuck for holding and driving fasteners such as screws or nails comprises a spring-loaded bearing sleeve with fastener-clamping balls and a spring-loaded clamping sleeve tapered to constrict the balls around the shank of a fastener inserted into the chuck, the clamping sleeve having a space to receive the balls during insertion of the fastener and for releasing the fastener, after completion of the driving operation.

Abstract: A positioning member is moved transverse to a slide fastener chain after advancement of the slide fastener chain to a gapping and stop applying station to position fastening elements of the slide fastener chain in a channel extending in the station. The slide fastener chain is clamped and gapped, and a bottom stop is applied to the chain.

Abstract: N-phosphonomethyl glycine is prepared starting from glycine, formaldehyde and a tertiary base in alcoholic solution. After completion of the reaction, a dialkyl phosphite is added. The reaction product is hydrolyzed, and acidification yields the desired product in good purity.