Abstract:
New 4,6-disalicyloyl-hydrazino-s-triazines are stabilizers for polyolefines. They are prepared by reacting 4,6-dihydrazino-s-triazines with salicylol chloride.
Abstract:
The present invention relates to novel mixtures based on sulfur-crosslinked triglyceride, a process for their preparation, and their use as fertilizers, in particular for promoting the growth of plants which require sulfur.
Abstract:
A particle beam apparatus has a cooled anti-contaminator (18) and/or a cooled specimen holder (17). A thermal conductor (19) is provided for providing a connection between the anti-contaminator (18) and/or the specimen holder (17), on the one hand, and the cooler (21) of a cryogen vessel (20) on the other hand. The thermal conductor (19) includes a carbon fiber bundle. With the carbon fiber bundle (19), a high thermal conductivity is ensured between the cooler (21) and the surfaces (17, 18) to be cooled. At the same time, thermal expansions are avoided which lead to a displacement of the anti-contaminator (18) and/or the specimen holder (17).
Abstract:
Glow plug with a metallic hollow body 1 in which a ceramic heating rod 2 is arranged such that it projects axially on one side of hollow body 1. The heating rod 2 is formed of a ceramic conductor 6 which is embedded in a ceramic insulator 7 and is connected to the power supply terminals, i.e., to ground via the metal of hollow body 1 and via a plug terminal 3. The contacts of the ceramic conductor 6 with the power supply terminals are formed by contact surfaces 8, 9 on the ceramic conductor 6, via which the conductor is in contact, on the one hand, with metallic hollow body 1, and with plug terminal 3, on the other hand. The contacts are preferably pressure loaded by generating a prestress between the components in contact. Preferably, metallic contact parts, for example, contact rings 10, 11, are provided at the contact points between the contact surfaces 8, 9 and the metallic hollow body 1 and plug terminal 3.
Abstract:
The invention is directed to a protective arrangement for a longitudinally extendible machine component such as the measuring arm of a machine such as a coordinate measuring apparatus. The protective arrangement includes a bellows which at least partially surrounds the machine component and has a plurality of structural parts at least one of which is deflectable relative to the longitudinal axis of the machine component in response to a contact of the bellows with an object or person. Each of the structural parts has a cutout formed therein and the parts are disposed in the bellows so as to cause the cutouts to be mutually aligned in the undeflected condition of the bellows. A light barrier directs a light beam through the cutouts which becomes at least partially shaded in response to a deflection of the one structural part. The light barrier generates a signal in response to the shading and this signal is supplied to a protective circuit in the control unit of the machine which can, for example, initiate an emergency stoppage of the machine component thereby preventing damage.
Abstract:
The hydrodynamic control coupling has primary and secondary vane wheels (2,4 respectively) inclined to the coupling axis (20) and a working space (5) which is provided with an inlet (6) and an outlet (7) for the working medium, the working medium capable of being diverted from the working space into a receiving chamber (10) via tangential bores (7) running in the direction of the flow, a valve (8) being provided which determines the rate at which the working space fills. In accordance with the invention, the receiving chamber for the working medium is located radially inwardly of the working space and is defined by walls of the primary and secondary vane wheels. Such an arrangement of the coupling enables it to be constructed with smaller dimensions and to be simply controlled.
Abstract:
An arrangement for the self-wiping of contacts in multidigit interrogatory counters where the data are read through code wheels to contact wheels and to mechanical sliding contacts which sense the contact wheels. The improvement includes the arranging of the rotatably-mounted contact wheels to be mounted, independently from the frictional effect caused by the counting procedure during rotation on a movable shaft. Eccentrics control the movement of the movable shaft which make it possible to move the contact wheels in an oscillating manner against contact springs. This is accomplished in the overlap region for sensing the individual numbers.
Abstract:
An elastic lateral support with supporting wheel for children's bicycles comprising a single resilient part releasably attachable at one end to the frame of the bicycle and containing a supporting wheel at the other end, said lateral support in the mounted state at a tilting moment of 15 Nm exhibiting an elastic deflection of at least 20 mm, preferably at least 40 mm. The lateral support is attached to the frame of the bicycle with releasable clamping support composed of a inside clamping holder and an outside clamping holder bolted together at one end by the wheel nut and on the other end by a clamp bolt.
Abstract:
A coupling having two coupling members with engaging faces; each face has a plurality of annular, concentric ribs of trapezoidal cross-section and grooves correspondingly shaped to receive the ribs on the other face; less than the entire contact area of each face is ribbed; a spigot on one in a recess coupling member is received for initially positioning the coupling members; devices for clamping the coupling members together.
Abstract:
4-Siloxy derivatives of sterically hindered piperidines are effective light-stabilizers for plastics. These compounds have at least five alkyl groups in the ring positions 2, 3, 5 and 6 and four alkyl groups in ring positions 2 and 6, preferably methyl and ethyl groups. The ring nitrogen may be unsubstituted or substituted with a monovalent organic residue. The new compounds can be synthesized by O-silylation of 4-hydroxy-polyalkylpiperidines, preferably by reaction with chlorosilanes.