Abstract: Apparatus and method to raise the edge fibers of a cut pile carpet tile to ensure that they are cut by the rotating shear which is cutting the rest of the fibers in the tile. The tiles are overfed into the shear so that they abut one another causing the edge fiber, on the edge transverse to the direction of travel of the tiles, to be pushed upwardly. At a position adjacent the shearing member air under pressure is supplied against the traveling edge of the carpet tile to project the edge fibers into the upstanding position.

Abstract: Novel adducts of magnesium and zinc .beta.-diketonates with the bidentate ether 1,2-dimethoxyethane are disclosed which exhibit high vapor pressures upon moderate heating, and improved resistance to thermal decomposition at vaporization temperatures.

Abstract: A reciprocating web cutting knife which employs a fixed rotary knife blade which is indexed upon each full reciprocation of the knife carriage. A ratchet and pawl arrangement cooperates with a ratchet wheel mounted on the knife to index the knife.

Abstract: A bonded fabric producing machine in which the yarn is implanted in zig-zag fashion into coated substrates by a pair of folding blades which folds the yarn between the substrates fed between vertical guides. The machine is adapted to allow ready adjustment of the position of the folding blades when the distance between the vertical guides is adjusted.

Abstract: A device for scrubbing carpet having a brush which rotates about a point which is eccentrically driven in a small circle. The bristled area of the brush has a number of protruding areas around its periphery. When the scrubber is used with powdered cleaning composition, the bristles in these protruding areas press the powder down into the pile of the carpet and so tend to minimize redistribution of the powder by the brush as it rotates. A press bar may be located at the front of the machine to press powder down into the pile of the carpet. Means may also be included for dispensing powder in front of the press bar.

Abstract: Method and apparatus to produce a bonded loop pile carpet. The carpet machine is of the rotary type which uses cooperating blade members to form the yarn loops for bonding to a backing sheet. One of the blade members is reciprocably mounted in the machine and moves in a downward curved angular path to contact the yarn.

Abstract: System and method to ensure that the pressure in a hydraulic pressure system is at a pre-determined level and is maintained for a pre-determined length of time.