A tracer head for effecting three dimensional tracing of a model surface in a highly efficient and precise manner is described herein. The tracer head has a base frame, a tracer shaft, a stylus mounted at one end of the tracer shaft for tracing said model surface, a plurality of supports for the tracer shaft provided at at least two locations on the base frame, each support including a member which has a moderate resiliency in the thrust direction of the tracer shaft as well as either a strong r...

A multi-tapered piston mounted in a push-pull arrangement for actuating a plurality of multi-finished hones.

A shower head has a body portion rotatably mounted on a fitting adapted for connection with a pressurized source of water. The body portion is structured to provide three separate flow channels that project different types of streams including an oblique stream causing rotation of the body portion and a generally helically projected pattern that provides a massaging action on the bather, the body portion being equipped with relatively movable members that provide a valving action for selecting t...

A mop head has generally U-shaped loops extending to both sides of the center band and the loops are extensively twisted along their lengths. Additional bands may be provided on both sides of the center band. The center band is secured to portions of the loops that are untwisted.

A razor head having a cap portion mounted thereon and adapted to pivot upon one end of the razor head, the cap being held and released by a hook latch means disposed in the razor head. The exposure of the blade is varied by a rotatable adjusting spindle connected to a blade guard.

An extruder head having a housing, extruder core and core holder in which the limiting surfaces of the exit channel are formed on the extruder core and on the core holder respectively. The construction of the head can be extremely compact and enables extrusions of predetermined wall thickness to be obtained, of which the following is a specification.

A boring head has a boring head body having a shank on the upper part thereof, and bit mounting means is slidably fitted into a transverse channel formed on the underside of the body. A bit is secured to the bit mounting means. In one embodiment a bolt is loosely fitted into a transverse hole formed through the mounting means, one end thereof being loosely fitted through a hole formed on one side of the concave channel of the body. The other end of the bolt is screwed into a threaded hole formed...

A gage head mechanism for selecting bearing shims during assembly of a differential drive for insertion behind the differential bearings at opposite sides of the differential case so as to assure a proper and acceptable amount of backlash between the ring gear and the drive pinion. The gage head mechanism is adapted to provide a proper and acceptable backlash between the drive pinion and the ring gear under conditions in which the differential case is supported in the differential carrier with t...

An annular wrench head in the form of a socket or a box end wrench which has a plurality of arcuately cross-sectioned ribs extending into the central opening of the head and spaced from one another so as to contact the midway point of certain of the faces of the fastener head. The spaces between the ribs are in alignment with the edges of the fastener head.

A sprayhead for a pressurized aerosol dispenser includes an elongated expansion and mixing chamber upstream of the spray-forming nozzle orifice. Controlled expansion of the dispensed product and propellant mixture within the chamber enhances vaporization of the propellant, promotes uniform mixing of the vaporized propellant with the product prior to passage through the spray nozzle, and produces increased flow rates for a given nozzle orifice diameter.