Abstract: A bore gauge incorporates one or more electromagnetic transducers housed in a shroud which in use is inserted into the bore to be gauged. Each transducer comprises a coil and a core movable within the coil. In one embodiment the coil and the core of a single transducer are mounted on opposite limbs of a flexible fork-like structure, the two limbs carrying gauging contacts for engagement with the walls of the bore. In other embodiments, incorporating a plurality of transducers, coils are rigidly mounted within the shroud and cores are mounted on flexible limbs set in slots in the surface of the shroud.

Abstract: A knock-down rack for stacked articles, such as cigarette packages is disclosed. The rack is easily packed in knock-down condition for shipping purposes and easily assembled at its place of use by use primarily of only a screw driver. The rack includes right angle retainer members having leg ends received in edge slots of upper and lower panels and then trapped therein by strips secured over the slots.

Abstract: A brake of the multi-plate disc type is mounted at the end of an axle of a vehicle to brake it through the intermediary of a reduction gear mechanism, and the brake is operated by an hydraulic control system which extends to the brake from a portion inboard of bearings for a hub on which a wheel is mounted. A removable external cover is itself disposed outwardly of the brake to provide direct access to it when it is removed and to ensure the completeness and liquid-tightness of a closed cooling circuit for cooling the brake.

Abstract: An hydraulic booster has a boost piston which works in a bore and is subjected to boost pressure in a boost chamber to actuate a master cylinder assembly, and a control valve assembly controls pressurization of the boost chamber in response to an input load applied to a pedal-operated input member. The input member works in a bore in the boost piston and in operation, a reaction load from the master cylinder is fed back through the booster to the input member through a reducer mechanism to provide a reaction at the pedal which is not affected by the boost pressure, and the reducer mechanism is received within a recess in the boost piston, which is defined between two relatively movable parts of the boost piston.

Abstract: In a machine for removing meat from a crab body by vibrating a core box having openings over each of which a crab body is supported, the invention provides a supplemental support substantially bisecting each opening to permit half bodies to be supported.

Abstract: Disclosed is a novel 1,4-thiazine derivatives represented by the following general formula I and a pharmaceutically acceptable acid addition salt thereof: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 respectively represent a hydrogen atom or a lower alkyl group. Also disclosed are processes for preparation of a novel thiazine derivative represented by the general formula I, which comprise reacting a compound of the general formula III with a compound of the general formula A-X' in a compound containing a pyridinyl group as a solvent to obtain a compound of the general formula II: ##STR2## wherein R.sub.1, R.sub.2 and R.sub.

Abstract: An improvement of a plow or a harrow of the type in which a plurality of saucer-like disks carried by a rotary shaft inclined at an angle with respect to the direction of travel of a tractor are forced to rotate, thereby plowing uncultivated farm land. The plurality of disks or disk gang is supported by a parallel linkage system and the angle of the disk gang with respect to the direction of travel of the tractor can be freely selected so that, in accordance with the skill of an operator and soil condition which will be encountered, either the horizontal travel or the inclined travel may be selected.

Abstract: A spring leaf of composite fibre reinforced synthetic resin material has an attachment member secured at an end thereof by means of a clamping band which fits about the end of the spring leaf and an extension portion of the attachment member to clamp them together. In one form the attachment member is an eye-end with opposed flanges which lie on the spring leaf and each of which is clamped to the leaf by a clamping band secured by a pin. In an assembly having two superimposed spring leaves one clamping band has a depending portion in which the end of the lower leaf is slidingly located. In another form the attachment member is an eye with a tang having an enlarged end which is received into a complementary recess in the end of the spring leaf and retained therein by the clamping band.

Abstract: A lid for a pilfer evident container has an inverted U-section rim in which nests an inverted U-section lip of a container, the lid rim having at least one opening in the outer limb, the outer limb of the container lip and lid rim being continuous around the lid, with the former having an outwardly projecting portion which is received by the lid opening to prevent removal of the lid after application to the container, the lid being removable by rupturing the connection between that part of the lid outer limb in the path of which, in the direction of lid removal, lies the outwardly projecting portion of the container rim.

Abstract: A power valve for a vehicle braking system includes a main pressure chamber (4) defined between the body (1) and spool (2) and connected to the outlet (5), the spool being displaceable under an input effort to close communication between the chamber (4) and a reservoir port (8) and open communication of the chamber (4) with an inlet (7), and an auxiliary chamber (10) to which fluid pressure may be supplied through a port (11) to exert a force on the spool for reducing the pressure supplied to the outlet (5) for a given input effort applied to the spool (2).

Abstract: In a master cylinder assembly separate master cylinders are connected by a common transfer passage through which the pressure spaces of the master cylinders in advance of pistons are in communication when the master cylinders are operated simultaneously, and communication between the pressure spaces is cut off by a transfer valve mechanism when one of the master cylinders is operated on its own. Each piston is guided to slide in its respective bore only by the sliding engagement with the bore of a guide portion of the piston and the guide portion is disposed on the outermost side of a transfer port with which the transfer passage is in communication when the piston is in a retracted position.

Abstract: An apparatus and operating system to be used by a paraplegic or other crippled person has a patient-supporting walker of stable construction, braces extending entirely along the user's legs, a body-supported pneumatic system for alternately moving the legs in a pre-determined manner, and user-operated control means for operating the system.

Abstract: A method of hermetically sealing a predetermined quantity of alcohol into a chamber provided at the bottom of a stackable disposable container of plastics material by securing a lid or cover having the thickness of foil to a ledge defined at the transition of the chamber with the remainder of the container. The method involves filling the container in such manner that the ledge is not wetted by the alcohol and than securing, by a combination of the effect of heat and pressure acting on the material of the cover and that of the ledge, the lid or cover to the ledge. Conveniently, a peripheral skirt is provided around the periphery of the lid or cover which is not adhered to the container.

Abstract: A fifth wheel coupler having a jaw which is positively driven by a mechanism in response to the movement of a king pin in a coupling direction. The jaw and the mechanism are yieldably connected so as to permit the mechanism to be operated by the oncoming king pin to the full extent of the movement of both, after the jaw has been prevented from further movement due to engagement with an obstruction on the king pin.

Abstract: In an hydraulic booster a load applied to a master cylinder assembly through the booster is fed back to a pedal-operated input piston through a reducer mechanism. This provides, when a booster chamber for operating a boost piston is pressurized by boost pressure, a reaction of "feel" at the pedal which is unaffected by the magnitude of the boost pressure.

Abstract: A pair of normal sized anchoring spuds for use in water of moderate depth are mounted for reciprocal movement in a single, reciprocal spud support member which may be lowered into water of abnormal depth, with the spuds cooperating with the support member as if they were operating in water of moderate depth.

Abstract: An improved upper member for the two-part ball race of a bicycle headset is provided which is light in weight and has a ball engaging surface which follows closely the contours of the balls.

Abstract: A control valve assembly incorporates a piston and a flow control valve which are both biassed in the same direction against pressure in an hydraulic accumulator by first and second respective springs. Accumulator pressure in a control chamber also acts to urge the flow control valve in the same direction as it is biassed by the second spring and pressure from a pump acts to bias the flow control valve in the opposite direction. A pilot dump valve controlling communication between the chamber and an outlet connection is normally biassed into a closed position by a third spring. The dump valve is adapted to open at a cut-out pressure to dump pressure from the chamber, and the cut-out pressure is determined by the area of the seating of the dump valve over which the pressure in the chamber acts, and the force in the third spring. A cut-in pressure at which the dump valve closes is determined by the area of the piston and the force in the first spring.