Rope or line block characterized by an intermediate connector disposed between ends of sheave side plates or cheeks and a shackle which, by choice of its position, relative to the cheeks, permits the connector to rotate about an axis perpendicular to the pulley axis or be secured against such rotation in alternative angular positions such as 90.degree. apart, to thereby orient the shackle carried by same in alternative positions. Two shackles of alternative form may be provided, one of which per...

This specification discloses a precast concrete structural member which is in the form of a generally elongated upright beam, preferably of a sufficient height to extend from the foot to the top of a wall, and formed in the shape of a generally elongated U-shape, with a relatively deep narrow channel extending downwardly from the top of such member to a point somewhat above the base. In this way, the member will define inner and outer surfaces of the wall, with the inner and outer portions being...

A terminal block, particularly for use in confined spaces such as telephone units, having a plurality of rectangular recesses arranged in rows and columns, the rows extending in the direction of the longitudinal axes of the recesses. An upwardly projecting rib extends between each pair of adjacent rows, each rib having a cross-section which assists in entering a connector into a terminal in a recess. Terminals are held in position by portions extending through holes in the base of the block and ...

A building block having dovetail tongue and groove configuration for interlocking with adjacent blocks by sliding in a longitudinal direction. The dovetail tongue protrudes outwardly from one side of the block and has two widened longitudinal end portions have a cross-sectional shape defining an inverted triangular wedge which end portions are interconnected by an intermediate portion rectangular in cross section which intermediate portion extends one-third the length of the tongue. The opposite...

Sound-absorbing blocks of box-like shape are combined to form a unit. The unit consists of two kinds of blocks, one being shorter and having a lower density than the other. In use, every unit is fixed to a wall or ceiling so that a discontinuous side of each unit faces away from the surface of the wall or ceiling and a smooth side thereof is fixed to the latter. Every unit consists of four or five sound-absorbing blocks which latter are made of a fiber material. One of the features of this inven...

Mating terminal blocks for mounting on the sides of sliding drawers and associated fixed walls to facilitate easy sliding connection or disconnection of the circuits in the sliding drawer. The contacts in the terminal blocks are staggered to facilitate mating engagement even though slight misalignments may exist and are of an especially compact configuration. They include grooves for easy mounting within simply shaped apertures.

A loading block for ammunition cases has a plurality of variously sized chambers on both sides thereof for holding ammunition cases during filling. Each chamber has a shelf therein enabling it to accommodate at least two different case sizes.

The invention is characterized by a terminal block formed in part from insulating material. The terminal block is designed to be attached to a housing surrounding electronic equipment which is affected by radio frequency signals. The terminal block is provided with connector pins which extend through the bores of tubular rf filters. These filters are designed to block the entry of rf signals to the interior of the housing and to short out the rf signals to a ground plane which is also a part of ...

A block splitter having a work supporting surface, with block splitting blades arranged in operative relationship thereon. The blades include a plurality of relatively movable, spaced cutting blades disposed in aligned relationship in a spliiting plane, with at least one of the cutting blades being mounted along the work supporting surface in anchored relationship thereto. The remaining blades have forced-applying means coupled thereto for the application of a splitting force through the web of ...

A two-stroke internal combustion engine has cylinders in two planes offset from each other at 90.degree., a bore to contain a crankshaft is provided adjacent the inner ends of the cylinders and at right angles thereto, and a bore is provided within the included angle parallel to the crankshaft bore constituting a valve cylinder which has ports for supplying air or fuel and air to the cylinders. This is a continuation-in-part of application Ser. No. 808,798, filed Mar. 20, 1969, now abandoned.