An end block adapted for use on a kiln car includes a refractory body having a transverse projection at a front end and a transverse recess at a rear end. The recess is dimensioned to receive therewithin a projection on the front end of another block with a loose fit therebetween. A sealing layer of resilient refractory material may be disposed within the recess for contact with the front end projection of another block.

A transparency block is disclosed which is attractive in appearance and provides a maximum of image area for any given dimension of block. An important feature of the invention is the use of locking fingers of unique construction for holding transparencies firmly in the block, and without the need for tape or mechanical mounting. Another feature is the provision of a built-in circline fluorescent lamp for providing maximum illumination of the transparency at a minimum of energy expenditure or co...

An end block adapted for use on a kiln car includes a refractory body having a transverse projection at a front end and a transverse recess at a rear end. The recess is dimensioned to receive therewithin a projection on the front end of another block with a loose fit therebetween. A sealing layer of resilient refractory material may be disposed within the recess for contact with the front end projection of another block.

A novel snatch block particularly suitable for marine use and for movement on a boat deck mounted track, comprising a track slide portion and an upper sheave assembly. The sheave assembly comprises a pair of normally spaced-apart side cheeks; a sheave pin extending between said cheeks; and a sheave rotatably mounted on said sheave pin. Structure is provided for holding the sheave pin at one end to one of the side cheeks, and releasably engaging the sheave pin at the opposite end with the other o...

A contact block for an electrical switch includes an insulating housing for a pair of spaced stationary contacts. A movable contact support carrier or stroker carries a bridging member including contacts for engagement with the stationary contacts. Biasing means positioned between the stroker and the housing normally biases the carrier in the direction of a projection carried by the stroker, the stroker being actuated by a linear or rotary operator. Both normally open and normally closec contact...

The invention relates to an automatic-connection terminal block for connecting two conductor wires together, said terminal block including an insulating box and a cover which co-operates therewith. The terminal block is characterized in that the insulating box (1) includes two longitudinal channels (3) spaced apart from each other. The ends thereof, have openings (30) which lead to the periphery of the terminal block and said conductor wires are inserted through said openings. The channels each ...

A connector block for interconnecting two pluralities of wires fanned along the two opposite edges thereof is provided. The connector block has an elongate layered structure of three elements, a flat center element for supporting two staggered rows of flat, slotted electrical connectors, one on each surface thereof, and two insulating cover elements substantially coextensive, and compatible, with the center element, one on each side thereof and secured thereto for positively retaining the connec...

A block, in particular a shuttering block or standard block, has two longitudinal walls which form an outer wall and an inner wall. These are connected to one another by at least one transverse wall, which extends over at least part of the height of the block. The outer wall is produced from an insulating material and is connected to the inner wall via positively locking connecting devices. In this arrangement, the at least one transverse wall is integral with the outer wall.

A longitudinal sound block with eight sides or ten sides for use in concrete wall systems and reinforced wall systems. The sound block is used for sound barriers, privacy walls, and retaining walls. The front end of the sound block is a bullet-like nose. A rear end of the sound block receives the front end in a plane configuration or angled configuration.

A construction block to be used with other similar blocks in order to construct panels of a building which is formed of a pair of substantially planar panels located in juxtaposition and spaced apart forming a space between the panel. Within the space between the panel, there is to be poured a quantity of uncured wet aggregate and cement mixture which is then to harden into a solid mass. Each of the panels is to be constructed of expanded polystyrene beads. The panels are secured together throug...