Abstract: A fabric tenter device having a pivotally mounted roof which may carry a nozzle box is provided with a counterbalance assembly enabling the roof and box to be pivotally shifted from the tenter covering to an open position by manual lifting forces. The counterbalance assembly is comprised of a lever divided into two arms, the lever being pivotally mounted on a fulcrum fixed to the tenter housing. The lever includes a weight arm underlying the roof and a power arm to the opposite side of the fulcrum. A chain having one end fixed to the power arm has its other end attached to a spring mechanism carried by the weight arm, the chain being arranged over a guide roller or rollers in such manner that the spring is tensioned to its maximum extent when the roof is in the tenter covering position.

Abstract: A method of producing an elongate article comprises the step of providing, by winding a filament, a plurality of superposed layers to form a hollow cylinder having open ends. At least one of the layers is formed of a circumferential winding and at least one of the layers is formed of a cross winding. The cross winding has fibers having a negative coefficient of thermal expansion and is oriented at a predetermined inclined angle to the cylinder axis. The method further comprises the step of securing to the open ends of the hollow cylinder end pieces comprised of a material having a high surface hardness and dimensional stability. The inclined angle has such a magnitude that temperature-caused changes in the axial length of the hollow cylinder compensate for temperature-caused changes in the axial length of the end pieces.

Abstract: A separating pot for glandless electrical or magnetic drive assemblies includes a pot jacket having a generally tubular body with two ends and a flange portion at one of the two ends, the pot jacket being composed of fiber reinforced plastic with the fiber being wound in alternating layers of circumferential windings and helical windings, and with the flange portion being composed of additional circumferential windings; a bottom member disposed within and closing off the other of the two ends of the pot jacket, the end of the pot jacket being an open end, the bottom member having a generally cup-shaped portion which includes a rim portion surrounding an interior bottom face, the rim portion facing the open end of the pot jacket and extending in an axial direction away from the interior bottom face, the bottom member being in a press fit with the pot jacket and being glued to the pot jacket, the rim portion having a generally conically-shaped interior surface which is enlarged in a direction away from the inte

Abstract: A tester for use in testing coordinate measuring devices includes a hub having a generally tubular body portion, an outer ring, and a plurality of spokes connected to the hub and to the outer ring, each of the spokes having a generally tubular body portion and extending radially from the hub. A plurality of holders are connected to respective ones of the plurality of spokes, and elements respectively supported by the holders are provided which are adapted for use in testing the coordinates of a measuring device. The generally tubular body portion of the hub and the generally tubular body portion of each of the spokes is composed of a bonded fiber material in which layers of circumferential windings alternate with layers of helical windings, and wherein the helical windings are wound of a fiber which has a negative coefficient of thermal expansion.

Abstract: A mixing head for two reactive components has a mixing chamber provided with a control plunger enabling recirculation and opening at right angles into a quieting passage which is provided with a control plunger adapted to selectively obstruct the outlet of the mixing chamber into the quieting passage. According to the invention an adjustable abutment is provided for the latter plunger to enable the obstruction to be completely removed during one phase of each cycle of the actuation of the apparatus. This abutment can be an annular piston under the control of fluid pressure.

Abstract: A mixing head for two reactive components forms a mixture in a mixing chamber when a control plunger is retracted, the mixture passing into a channel at right angles to the mixing chamber. A second plunger in the channel is partially retracted so that its free end is positioned in line with the opening to form a partial obstruction around which the mixture is formed. Then the second plunger is retracted to allow clearing of residues, and advanced to drive residues from the channel.