A sprinkler head comprising a stationary sprinkler body structure defining an inlet adapted to be connected with a source of water under pressure and a water-tight chamber communicating with the inlet, a movable tubular water distributing structure providing an inlet and a spaced discharge nozzle in flow communication relation therewith, a ball and socket connection for (1) mounting the water distributing structure on the sprinkler body structure with the inlet thereof within the chamber and the...

An extruder head for supplying tubular parisons to a blow molding machine has a cylindrical outer housing, an inner housing extending into the rear end portion of the outer housing, a core which defines with the outer housing an annular extrusion orifice and an annular compartment which supplies plasticized synthetic thermoplastic material to the orifice, and a holder which secures the core to the inner housing so that plasticized material can flow from an axially extending channel of the inner ...

An improved sprinkler head provided with a water pressure indicator to permit a visual check to see whether or not it is supplied with water under pressure. The indicator includes a colored indicating element protruding under water pressure.

A coupling head suitable to be supported on a transporting means for coupling an object to be evacuated to a vacuum line. The coupling has a ball valve and a poppet valve for connecting and disconnecting the vacuum and gas pressure to the object. Leaks in the object can be detected by a sensing device actuated by a bellows on the coupling head.

A milling head having a shaft for attachment to a machine tool, and at least one cutting insert or bit, characterized in that the cutting insert is supported in a tiltable or swivelable holder having a swivel axis extending perpendicularly to the axis of rotation of the milling head. Stopping means is situated between the milling head and the holder, against which the holder rests in its working position. A cam plate is held in a stationary position such that the cam plate cooperates with the ho...

The specification discloses an improvement in a cleaning head for a hot water extraction system of the type which comprises walls defining a vacuum chamber one side of which is open to the exterior and means for spraying a jet of atomized hot water against the plane of the open side of the vacuum chamber. The improvement comprises means for varying the area of impact of the jet of atomized hot water on that plane. In the preferred embodiment disclosed herein, the spray means is mounted on one of...

A multi-action head gate is disclosed which, by actuation of a single element, selectively opens a passageway or closes it about the neck of an animal for secure engagement therewith. The engagement apparatus consists primarily of a vertically movable ear block and a pair of opposing pivotable jaw locks, all three of which simultaneously move to engage or release the animal.

A cylinder head including a tubular port liner made of a heat resistant metal, with an annular space interposed between the liner and the wall of a cavity in the cylinder head, whereby the heat to be transmitted from exhaust gases to the cylinder head is insulated by the annular space defined between the port liner and the wall of a cavity in the cylinder head. This tubular port liner is secured or embedded into the cylinder head itself at its one end on the side of a combustion chamber accordin...

A printing head for dot matrix printers, including novel electromagnet structures for driving individual printing wires. In each electromagnet, a pair of coils generally radial to the printing wire axis drive an armature coaxial with the printing wire and to which it is attached. The head is specifically designed for simple and reliable construction at low cost, operation at moderate speeds (60-100 cps) for extended periods with a long, powerful stroke, and includes high-reliability mounting ele...

A spray head apparatus having a liquid deflecting back plate which utilizes the Coanda effect to achieve a widely dispersed spray pattern is disclosed. The back plate is vertically movable and is positioned above and biased toward the upwardly facing open end of a vertical flow pipe so that the back plate rises as the pressure of a liquid inside the flow pipe increases.