Abstract: A portable, self-contained, light-weight, compact and explosion-proof device, that is readily dismantable and transportable by automobile or aircraft, for inspecting the ignition surfaces of a solid propellant rocket motor can be introduced into the motor from the aft end thereof with or without the nozzle in place and is characterized in that a light source, reflecting means and viewing means are so arranged therein as to allow an operator to observe from outside the motor the condition of the entire ignition surface from either the aft end or the head end of the motor.

Abstract: An ice cream tub cutter in which a tub of ice cream is clamped to a turntable between two posts. Adjustable in height sleeves are mounted on these posts, and a knife is mounted on one of them to make an initial cut, this being through the cover of the tub of ice cream and is accomplished by rotation of the turntable with the knife in engagement with the cover. A wire extends between the sleeves at the same elevation as the knife cut, and an adjustably tensioned spring applies tension to the wire to effect cutting the ice cream as the tub of ice cream is rotated a second time.

Abstract: 1. A slot former assembly for use in fabricating the solid propellant in a motor case for a solid propellant rocket motor comprising an outer hollow core, an inner tubular core and a flexible slot former comprising a skeleton frame consisting of stiffening rods that are retained in spaced relation to each other by means of a cord woven thereon in a basket weave and provided with a covering of flexible material operatively connected to said hollow core, whereby when said assembly is positioned in said motor case and the solid propellant is cast therein about said assembly, a slotted cavity configuration will be provided in the solid propellant in said motor case.