A transmission for a tractor comprising a main change-speed mechanism (6), an auxiliary change-speed mechanism (8), and a gear type backward-forward drive switching mechanism (7) for transmitting power from an engine to a propelling system, such as front and rear drive wheels. The main change-speed mechanism (6), the gear type backward-forward drive switching mechanism (7), and the auxilary change...

The invention comprises (a) an improved cross wound yarn package on which the final few turns of yarn are wound as a compact pile wound bunch on the cylindrical cross wound package surface; (b) apparatus for winding such a package, comprising a fixed pile winding guide (4 in FIG. 3) as well as a traverse guide (1 in FIG. 3) and means effective to move the yarn from one to the other (5 in FIG. 3); ...

Phenalkoxyalky- and phenoxyalkyl-substituted oxiranecarboxylic acids of the formula (I) wherein R1 denotes a hydrogen atom (-H), a halogen atom, a lower alkyl group, a lower alkoxy group, a nitro group or a trifluoromethyl group, R2 has one of the meanings of R1, R3 denotes a hydrogen atom (-H) or a lower alkyl group, Y denotes -O-(CH2)m-, m denotes O or an integer from 1 to 4, and n de...

A sheet diverter in the path of a stream of cut sheets to be diverted in predetermined sequence in different directions in which a pair of rotary diverters having cam surfaces thereon divert and guide the sheets in the predetermined sequence relative to a pair of guiding surfaces.

Long-term lubrication of highly loaded lubricating areas or surfaces, such as in very high speed medical and/or dental equipment, is obtained by applying a synthetic film, for example composed of poly(fluoroacrylic acid methyl ester) onto the sliding/moving surfaces, along with a polar oil having high lubricity. Anti-microbial agents can be added to the synthetic film. A pre-coat of molybdenum sul...

An acoustic method and apparatus for investigating an earth formation penetrated by a borehole are described. Acoustic transducers are mounted on a tool to accurately determine the distance between a segment of the tool and the wall of the borehole. The acoustic transducers are positioned in such manner that the stand-off distance between individual resistivity measuring electrodes in an array, wh...

The invention relates to an information input for a navigation device for highway vehicles in connection with which map markings which represent optically readable information and can be read by a reading device and fed to a data processing unit of the navigation device can be associated with a map, in particular a road map. A mark 6 can be associated with a starting or target point on the map and...

An apparatus and method for providing an accurately regulated flow of liquid medium to a device mounted in or on a rotor of a centrifuge, comprises a scoop on the rotor having a mouth opening forwards in the direction of rotation, with a duct connecting the mouth to the device; the liquid medium being projected as a jet into the path of the rotating scoop so that the mouth chops out a mid-portion ...

A transmission mechanism for vehicles comprising main clutch means having a primary clutch and a secondary clutch, primary and secondary propeller shafts for primary and secondary transmissions adapted to be intermittently rotated by the operation of said main clutch means, a first transmission system adapted to transmit the transmission power of said primary propeller shaft, a second transmission...

Stable crosslinked polyurethane aqueous emulsions are prepared by (1) forming in an inert solvent a branched prepolymer derived from (a) an amine containing alcohol having two or three -OH groups, (b) a hydrophobic polymeric diol or triol, (c) a mixture of an aliphatic and an aromatic polyisocyanate and (d) optionally a urethane-forming catalyst; (2) admixing the reaction product ...

Tyre building apparatus in which a former (20, 35) is mounted on a first rotatable turret (10, 12), and a component carrier (30, 51) of tubular form is mounted on a second rotatable turret adjacent the first turret. The former and the component carrier are arranged to be relatively movable at a turret station to enable the former to be surrounded by the component carrier so as to permit transfer o...

Refractory lining for e.g. casting boxes comprising a refractory matrix and precipitated silica, the silica being precipitated in situ to form a structure, imparting to the material a volume weight of from about 0.8 to about 1.2 g/cm3, the material being substantially free from carbon, hydrogen and available oxygen; process for the manufacture of such refractory lining.

A hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising mixtures of alkali and alkanolamine salts of alkylarylsulfonic acids and alpha olefinsulfonic acids, and alkali and alkanolamine salts of fatty acids, and a nonionic component selected from polyethylene glycol derivatives and diethanolamine adducts of...

A down-hole signal generator for a mud-pulse telemetry system comprises an annular impeller surrounding a casing and arranged to be driven by the mud passing along the drill string. The impeller serves to drive a torque control arrangement, and preferably also an electrical generator, within the casing. The torque control arrangement is switchable between two states by a signalling actuator in res...

A process for producing cellular concrete articles in the so-called pre-foam fashion, comprises molding a mixture (D) of a cement compound slurry (A) comprising calcium silicate and a rapid-hardening cement compound slurry (B) comprising calcium aluminate and an aqueous foamed liquid (C), and subjecting the molded article to hydrothermal curing, both the slurries (A) and (B) containing specified c...

Vesiculated polymer beads containing a pigment have in the past been produced employing a process using a polyamine base but this has introduced yellowing of the beads and avoidance of its use is desirable. Accordingly a process has been developed which produces vesiculated polymer beads which have a reduced tendency to be yellow. The new process involves forming an oil phase of the polyester resi...

A process for producing a highly expanded polypropylene foam which is uniform in viscosity during extrusion foaming, improved in melt strength and free from unevenness of surface by using a polypropylene resin having a specified melt tension.