A hydraulically operated injection moulding machine for the moulding of synthetic resin materials including hydraulic pumping means for supplying power to the machine and comprising a variable speed electric motor driving the hydraulic pumping means, the electric motor being arranged and adapted to be operated at speeds and torques each varied directly in accordance with the hydraulic requirements of the machine during an injection moulding cycle. In a preferred embodiment the speeds and torques...

A tracking arrangement for a conveyorized transport system of the type in which coded workpiece carriers are routed by a switching mechanism from a main rail to an entry end of a subsidiary loop and then returned to the switching mechanism via a discharge end of the subsidiary loop, the entry end of the subsidiary loop being located downstream of the discharge end relative to the general direction of carrier movement on the carrier rail. The tracking arrangement comprises a sensor which reads th...

A process for producing oxymethylene copolymers and terpolymers is disclosed which involves the non-linear addition of gaseous formaldehyde to a cyclic ether having at least two adjacent carbon atoms (1) and, in the case of a terpolymer, to a mixture of at least one (1) and one monoethylenically unsaturated aliphatic diol formal having at least four carbon atoms in its main chain (2), or to a mixture of (1) with a (2), in the presence of a polymerization initiator at a rate controlled so as to c...

The invention relates to a method of obtaining a simulated deep acid etch sign. The steps include creating a custom image on the sign through computer programming and hand applied manipulation. A coating of ink is applied and then cured with ultra violet light, post cured and then providing a conventional mirroring process.

A test device having a body including an electric bulb rated at 9 or 12 volts, illumination of the bulb being visible from outside the body; and at least two pairs of terminal stubs projecting from the body at regions spaced from each other, the members of each pair of terminal stubs being connected respectively to the terminals of the bulbs, the terminal stubs of one pair being spaced apart from each other by a first spacing of between 9 and 13 mm and the terminal stubs of the other or another ...

Sequential operation of an automatic machine is controlled by an assembly of binary switches which are selectively operated by a selector member. Plunger operated microswitches may be used in conjunction with a selector member comprising a stiff apertured plate so that when the plate is pressed against an assembly of switches, it depresses the plungers except the ones located against the apertures and thus makes the selection. Lever-operated microswitches may alternatively be used in conjunction...

A test assembly for testing circuitry on one of a plurality of different but generically related printed circuit cards each having a common type of edge connector comprises an edge connector socket adapted to receive said common edge connector, power supply means for providing suitable voltage levels for said circuitry, a plurality of wander leads for connecting selected terminals of said socket to a plurality of manually operable switches whereby pre-chosen voltage levels may be applied to sele...

An electrical control console for controlling operating sequences in an automated machine, the console including a rack of printed circuit cards wherein each card controls one or more operating sequences in a process performed by said machine. The invention is particularly suitable for controlling a sequence of operations performed by an injection moulding machine wherein failure to perform correctly any sequence may be checked out by removing and testing the appropriate printed circuit card.

A game of skill comprising a portable miniature bowling alley mountable on any stable surface, as a tabletop. The alley has a combined pin spotter and backstop pivotable between upright and horizontal positions and preferably used with a hand-held pin loading means to spot some or all of the pins. A ball and pin separator permits toppled pins to fall into a pin tray while directing the balls back via gravity flow to the players. A ball delivery chute enables the player to aim and deliver the bal...

The invention relates to a harvester for lowbush berries such as wild blueberries. A truss section is mounted to the three-point hitch of a tractor adapted to run in reverse, the truss section pulling a pair of laterally and longitudinally offset picking heads contained within the periphery of the truss section. The picking heads are floatingly connected to the truss section so that they are free to follow the contours of the ground. Each picking head mounts a rotating, tine-carrying reel therei...