A guiding device for an automatic bag-filling machine. After the bag has been filled, a finger is disposed in prolongation of front guiding rails. Tube sections are disposed in prolongation of rear guiding rails, with a result that the mouth of the bag is gripped and guided so as to engage between the guiding rails as a conveyor moves the bag along. Creases in the upper portion of the bag are removed on the shifting of the bag along the conveyor.

An illumination system for an operating theater having a pinpointing spotlamp and several individual satellite spotlamps all of which are pivotable independently of each other in two mutually-perpendicular directions. The pinpointing spotlamp is adjustable to select a desired area to be illuminated, and each satellite spotlamp is provided with a photoelectric servomechanism which operates in response to light from the area illuminated by the pinpointing spotlamp to adjust the associated satellit...

A water softener has a salt container with an inlet duct which can be connected to a source of water to be softened, through a valve unit, and at least two outlet ducts each one of which is connected to the inlet duct of one of the softener containers through a one-way valve.

A unit cylinder head for an internal combustion engine, and preferably, a V-diesel engine, is provided with at least one vertical channel on each lateral side face thereof. The channel mates with a corresponding channel provided on an adjacent cylinder head to define a receiving joint for a clamping screw which, thus, straddles two adjacent heads. The intake and exhaust valve seats of the head have the vertical plane joining the axes thereof inclined with respect to the vertical plane along the ...

An isolating valve or damper for the gas-tight closure of a flue or duct, comprising a frame or housing fitted in the flue or duct and a closure member operable between an open position and a closed position in which the member closes the flue or duct, wherein the closure member is a lightweight low inertia body, preferably a cone or a sphere, and wherein the closure member may be moved between its open and closed positions by means of a rapid-acting operator.

A method for manufacturing corrugated plastic tube by subjecting an internally unsupported corrugated plastic tube, at a temperature between 30.degree. and 70.degree.C, to the simultaneous action of at least two punching members in one or in two corrugations.

A device for manufacturing a plastic tube with transverse or helical grooves consisting of an extruder, two movable halves of die with an inner ribbed profile and being capable of forming a hollow mould, said halves of die each provided with circular elongations for heating the region between the opening of the extruder and the beginning of the mould, an inflatable member in the tube for conforming the tube to the profile of the mould. The inflatable member comprises a movable cylinder having tw...

An apparatus and method for automatically replacing damaged conveyor grates which can be remotely controlled. The apparatus is disposed slightly above the empty, return side of the conveyor at the cool end, and performs its function in this maintenance area. The apparatus employs a plurality of working heads which remove the damaged grate and replace it with a new grate without interrupting conveyor motion. The working heads are suspended above the conveyor in the maintenance area by a plurality...

A stopper plug apparatus for bottom pour ladles, fabricated from heat resistant ceramic and comprising a four-part stopper rod plug assembly which is joined together with refractory cement.

A plunger valve having a straight through passage closed by a cylindrical, elastic plunger. The plunger is movable at right angles to the through passage. It is connected to a screw-threaded stem by a retaining pin which is positioned in a longitudinal open bore of the plunger. In closed position of the valve, the retaining pin contacts the opposite wall of the through passage to limit the elastic deformation of the plunger. In open position of the valve, the retaining pin is slightly retracted ...