Abstract: A web alignment apparatus for use with multi-level web material such as carpeting, tufted fabrics and the like having a backing web and a pile on the backing web inwardly of the side edge of the backing web. The web alignment apparatus senses the pile edge and operates to maintain the pile edge in a preselected course relative to an apparatus that operates on the web. The sensor includes a web engaging member movable in a first path generally paralling the plane of the web to sense lateral deviations of the pile edge from the desired course of travel and the web engaging member is also movable in a second path transverse to the plane of the web to sense if the web engaging member rides onto the pile material, and the sensor is arranged to produce a signal when moved in either the first or second paths to operate the web alignment apparatus accordingly to shift the web relative to the apparatus operating thereon in a direction to bring the pile edge to the desired course of travel.

Abstract: A thread swaging screw of polygonal cross-section having a number of turns on a straight shank portion and at least one sizing turn between the shank portion and the tapered work entering end portion of the screw. The sizing turn inwardly of the pitch radii has the same cross-section and flank angle as the turns on the shank portion and the sizing turn in a region outwardly of the pitch radii has a flank angle slightly less than the flank angle o f the turns in the shank portion and crest radii at the lobes which are greater than the crest radii at the lobes of the shank turn to compensate for the contraction of the dedendum portion of the internal threads swaged in the workpiece.

Abstract: The machine dispenses a ready-made milk shake. A freezing chamber has a dispensing valve having porting and a valve element so arranged that flow of the semi-frozen comestible and the flavoring material occurs simultaneously. A beater mixes the two during dispensing. A conduit for the flavoring material has a unique coupling to the valve block and a quick-release coupling intermediate its ends. Upon release of the latter, a manually operable sampling valve may be connected to the conduit to selectively draw a sample of the flavoring. A pump is provided for sucking in a liquid comestible and gas in a preselected proportion and delivering them to the bottom of the freezing chamber. A vent is located in the valve block to vent air from the freezing chamber upon start-up of the machine. The vent has an inlet located at a level so that the liquid and gas volumes in the chamber are about equal to the respective proportions pumped.

Abstract: A lock for locking by-passing type slidable closure panels in a closed position with adjacent ends of the panels in spaced overlapping relation. The lock includes a lock housing mounted on one of the panels and having a lock plug mounted for axial sliding and rotary movement about an axis perpendicular to the panels, and an elongated keeper on the other of the panels. The lock plug has a rotary latch member on its forward end engageable with the keeper when the plug is extended and rotated to a preselected position to hold the plug in its extended position, and the plug also has latch means at its forward end engageable with the keeper to lock the plug and keeper against relative movement in one direction crosswise of the plug axis. The lock housing and keeper are advantageously adhesively secured to the inner and outer panels respectively so that the lock and keeper can be mounted without requiring drilling of the panels and the lock and keeper remain in position on the panels when unlocked.