摘要:
A gripper assembly having a plurality of tube gripping apparatus is provided for transferring full and empty bobbins between the bobbin bank of a textile fly frame and a supply creel. The gripper assembly is mounted on a traveling service unit and includes a drive device for commonly driving the tube gripping apparatus to synchronously grip and release tubes to be transferred. Each tube gripping apparatus includes an axially movable tube engaging member having gripping portions for compressively gripping a tube, a gripping portion drive member pivotally supported in a housing, and a pivot movement converting device for converting pivoting of the gripping portion drive member into axial movement of the tube engaging member. The gripping portion drive member is operatively connected to a common drive shaft of the gripper assembly for driving pivoting thereof. The pivot movement converting device includes a pair of diametrically opposed rollers rotatably supported on the gripping portion drive member and a cooperating cam surface formed on one end of the tube engaging member. A plurality of springs bias the rollers and the cam surface into continuous engagement with one another. Each tube gripping apparatus additionally includes a tube top engaging component and a tube insertion component for insertion into the tube to stabilize the tube during a tube transfer operation.
摘要:
A pressure regulating valve for venting the crankcase of an internal combustion engine in which the pressure regulating valve is combined with a motor oil filler tube and with an oil dip stick. This combination is distinguished by the fact that it is especially compact, and centrally connects all of the components relating to oil supply and monitoring in an internal combustion engine. This combination is further characterized in that only one connecting opening is needed on the engine block for adding oil, for returning oil from the pressure regulating valve to the oil pan, and for accommodating the oil dip stick.
摘要:
Substantially water-insoluble silicic acid esters corresponding to the following general formula ##STR1## are used to foam inhibitors in foaming systems. In the above formula, X and Y represent the group --OR or a methyl group, R represents a polypropylene glycol ether group and, optionally, a polyethylene glycol ether group which may be substituted by alkoxyl, amino-alkyl, acyl, acylamino, dialkoxyl and oxyaminoalkyl groups containing from 4 to 24 carbon atoms. The total number of glycol ether groups amounts to between 1 and 100, the number of polypropylene glycol ether groups preferably being at least equal to or larger than the number of ethylene glycol ether groups.