In a magnetic head having a tape contact face, a non-ferromagnetic unitary housing has a cavity for receiving a coil and has a slot for receiving at least one C-core of the magnetic circuit. The slot extends in a side face of the housing and debouches at one end into the cavity and at the other end into the tape contact face.

A drilling apparatus, especially for boring holes in the earth, having a drill as an integral unit including a first portion for starting the hole, a second portion for reaming the hole, and a third portion for maintaining the hole cylindrical. The drill is selectively fastened to a conventional auger. Extension plates may be attached to the third portion for drilling holes of different diameters. As an alternate embodiment, the first portion of the drill may include an auger, the drill and the ...

A sprinkler is provided with a plurality of sprinkling apertures having peripheral portions therein formed substantially perpendicularly to a floor surface over which the water is to be directed, thereby permitting more than a predetermined quantity of water to be sprinkled without specific directivity over the entire range of a predetermined area both under high and low hydraulic pressures.

Head for a robot or manipulator comprising a control casing and at least two shafts perpendicular to each other, with corresponding external members rotatably driven from separate control servo motors, one shaft being rigid with one of said members which supports the other shaft, said servo motors are fixedly mounted in said casing so as to drive at least two coaxial shafts, while the driving of at least one of said perpendicular shafts from one of said coaxial shafts takes place through a bevel...

A press-head comprising a plurality of punches and stripping members, wherein at least one of the punches may be directly connected to the head of the press for the machining operation, while the other punches and the stripping members abut via an elastic means on said head so that, on either side of the active punch in the process of machining, when the head is descending, at least one punch is used as stripping member selectively with a stripping member or a punch used as stripping member.

A head for measuring light diffusely reflected from a surface, the head having an optical projection system for projecting light onto a surface to be measured, and another optical system for collecting the light diffusely reflected from that surface and imaging it on a photodiode. The collecting optics comprise a spherical annular mirror coaxially aligned with an annular transparent planar member which has an annular plane mirror mounted underneath it, the projected light passing through the ape...

A tamping head with a pair of vibratory and reciprocatory tamping tools mounted on a vertically adjustable carrier for immersion in the ballast in the cribs, with the ties positioned between the tools. Each tamping tool is constituted by a lever pivotal in a vertical plane about a transverse pivot, and stops are mounted on the carrier for setting at least three different reciprocating strokes for the tamping tools, with a remote-controlled multi-step drive for setting the stops.

Amorphous metal alloys are employed in a magnetic head as core materials in the present invention. Such alloys are generally composed of M and Y, wherein M is at least one of Fe, Ni and Co and Y is at least one of P, B, C and Si. The amorphous metal alloys used are marked by a combination of the desirable properties of conventional permalloy with those of conventional ferrites.

A magnetic head for use with a tape recorder or the like comprises a core having a gap and which has a non-magnetic material of a similar mechanical property as the core material bonded to the periphery or part thereof, thereby preventing a foul-up of the head surface with dusts and avoiding damage to the magnetic tape; the foul-up or the damage occurs when the periphery of the core is filled with a layer of synthetic resin adhesive.

A tapping head with chasers of different pitches is described. The head comprises a block in the form of a hollow cylinder with a plurality of radial grooves in which chasers of different pitches are movable. The tapping head constitutes the main component of a tool usable both in manual and in machine threading with which it is possible to work a plurality of diameters involving at least two different pitches and reducing the preparation time to a minimum.