Abstract: An assembly combining a catalytic converter with a spiral muffler, particularly for small internal combustion engines. In series are an expansion chamber, a venturi for air injection, a catalytic converter, and a phase-spreading spiral muffler. The expansion chamber promotes proper operation of the venturi, as well as reducing engine exhaust back pressure and providing some noise reduction. The muffler has a spirally coiled exhaust channel dead-ended at its inner extremity, with an outer extremity serving as a muffled exhaust outlet. A distribution chamber is adjacent the spiral exhaust channel, sharing a common wall therewith, and a plurality of streamlined slotted openings spaced along the exhaust channel at different distances from the muffled exhaust outlet introduce gas from the distribution chamber into the spiral channel.

Abstract: A credit card imprinter having a number of rotatable type faces to imprint the amount of purchase on a credit card receipt. The type wheels are coaxially arranged and rotatably supported adjacent and in contact with the receipt to be imprinted. The imprinter is provided with a mechanism for positioning the type wheels which includes a member which translates along the type wheels to successively set same to the desired position, thereby allowing all of the type wheels to be positioned with a single mechanism. A roller is then used to imprint the type on the receipt and the type wheels are reset to the starting position by a reset mechanism.

Abstract: Relates to gauging mechanism for machine tools such as high production grinding machines and the like, and more particularly to a quadrilateral arrangement of arms for guiding movement of a gauge in opposite directions along two angularly related paths of travel and at different rates of speed. A power source for accomplishing such movements of the gauge is a single prime mover which reciprocatingly drives a carriage along a fixed track. In the illustrated embodiment of the invention, the single prime mover is a rotary electric motor which operates through coupling means to drive the carriage along the track with a simple harmonic motion timed to apply the desired fast and slow rates of speed to the gauge in accordance with the positions of the gauge in its paths of travel.

Abstract: Relates to an adjustable mounting bracket for instruments such as the conventional dial and air probe indicators and the like. The base portion of the instrument supporting bracket is formed from a one-piece flat strip metal stock cold worked into channel or C-shaped formation in cross section. The free ends of the opposing side wall sections of the channel formation are similarly inclined toward one another to form a dovetailed guideway or track upon which the instrument mounting bracket is slidably movable in opposite directions. The juncture of the side sections to the bottom transverse section are thinned to form a resiliently resisting hinge enabling one or both of the side sections to be resistingly inclined toward one another to narrow the dovetailed track and thus clamp and hold the complementary dovetailed extension forming part of the underside of the instrument supporting bracket.

Abstract: Relates to devices for separating and supporting strip stock out of engagement with opposing pairs of relatively movable progressive die members and during the separation of the latter and also for guiding the strip stock for intermittent advancement during such periods of separation. More specifically, the invention pertains to the assembly of parts making up such strip stock support and guiding devices and particularly one in which the parts of such a device are all enclosed within a single circular bore in one of the progressive die members including a provision for both releasably coupling the stock lifter member to a support within the bore enclosed to the die shoe and for guiding the lifter member for non-deviating rectilinear motion as the pairs of progressive die members open and close with respect to one another.

Abstract: A small diameter bore gauge or the like includes a probe having sensor means at one end and a plurality of longitudinally extending resiliently hinged fingers at the other end. A plunger extends along the probe and is connected to the sensor. Wedge cam means connected to the other end of the plunger has beveled planar surfaces cooperating with the fingers to swing them radially about their hinged connection with the probe into or out of contact with the bore wall to be gauged. Each finger has an outwardly facing work contacting surface and an inwardly facing narrow wedge cam contacting portion radially opposite the work contacting surface. A longitudinal groove divides either the wedge cam or the narrow wedge cam contacting surface to provide laterally spaced bearing areas.