Abstract: A tool is provided for the cleaving or separation of optical fibers so as to provide a flat perpendicular end face for the fiber. In the cleaving process, fiber is inserted into a slot and extends between an opposing scribe and anvil positioned at the end of the slot. In order to cleave the fiber, the fiber is first moved in a direction towards the scribe which, when it touches the fiber, produces a mark or surface imperfection on the outer surface of the fiber or its cladding. After scribing, the fiber is moved in an opposite direction over the anvil at which point the fiber is broken at the scribe mark.

Abstract: A safety attachment for use with cutting apparatus having a cutting member adapted to reciprocate particularly with respect to a fixed frame structure including a support bar mounted for movement with the cutting apparatus and the cutting apparatus having successive cutting positions so that the support bar has successive work positions, at least one bell crank having one end pivotally coupled to the support bar, having its fulcrum provided with a connecting link for fixedly positioning the fulcrum in spaced relation from a reference point on the cutting apparatus, and having the other end of the bell crank free and containing an aperture therein, a working rod threaded at one end and threadedly engaging a coupling link and an intermediate portion proximate the other end of the working rod adjustably engaging in slidable relation with a support rod having a pivot coupled to said aperture, and rabbet holder means being supported in a transverse slot in a working area and having a linking coupling between the r

Abstract: An attachment for a miter gauge of the type having an arm slidably movable in the slot of a work table so that a wooden workpiece is moved into engagement with a table saw blade depending upon the angle of the arm with respect to the miter gauge body. The attachment is mounted on the miter gauge in such a manner that two workpieces one with a taper cut and the other with a miter cut can be successively cut and then joined along their bias edges to form a ninety degree joint, without readjusting the miter gauge.

Abstract: A motorized saw for cross-cutting and mitering elongated workpieces mounted for sliding movement on a pair of spaced parallel guide rods supported by spaced trunnions attached to the ends of a support arm. The support arm is rotatably mounted intermediate its ends on a frame and has a worktable fixed thereon which includes a cutting channel that defines the pathway of travel of the saw. A pair of aligned fence members have their adjacent ends disposed in close proximity with the cutting channel and by means of a link rod operatively connected to each fence member and support arm, the fence members automatically adjust themselves to the cutting channel on selective movement of the support arm to a position for effecting a desired angle cut by the saw.

Abstract: An underwater cutting or penetrating device includes a source of liquid nogen for cooling a workpiece to a cryogenic temperature before impact by an explosively driven member. Attachment by magnet or clamp, and provision for confining the coolant by flexible gasket or boot are described.

Abstract: A starting arrangement for a reciprocating piston pneumatic hammer provides a passageway in the piston which couples a pneumatic piston subchamber to an exit port to exhaust pressurized pneumatic fluid from the subchamber to prevent the piston from centering.

Abstract: In a pneumatically powered rotating grinding machine there is provided a safety unit (13) comprising a speed governor and an overspeed release mechanism the purpose of which is to ensure a predetermined maximum speed. For safety reasons, the motor speed must never exceed a certain critical speed level which is determined by the mechanical strength of the working tool attached to the machine. When choosing a working tool to be attached to the machine the maximum speed mark of the machine is decisive. By having a portion of the safety unit exposed through an aperture (57) in the tool housing (10) and having the maximum speed mark (52) of the safety unit (13) located at the exposed portion, the maximum speed mark of the machine will always be the same as that of the safety unit (13). The suggested overspeed safety device avoids the risk involved in the event that a machine carrying a certain maximum speed mark might be erroneously fitted with a safety unit (13) intended for a higher maximum speed.

Abstract: Apparatus 30, FIG. 2 for severing an article 12 from a carrier strip 10 and for positioning the severed article is disclosed. The apparatus includes a die 33 having an aperture 32 exiting therethrough from an entrance end 35 to an exit end 36. A ramped shaped wall 37 is located on one surface of the aperture to taper the aperature as it extends from the entrance end to the exit end such that the exit end has a rectangular block "C" shaped opening. A punch 31 in axial alignment with the aperture for entering into and extending through the aperture, has a cavity 43 on one surface to accept ramped shaped wall 37 as punch 31 extends into aperture 32 and to form a block "C" shaped surface on the bottom face 42 of punch 31. When an article 12 is placed between punch 31 and aperture 32 and punch 31 is moved into the aperture, article 12 is severed from carrier strip 10 and is pushed by face 42 into the aperture.