Abstract: A space dividing system which comprises a rectangular panel having a metallic frame which includes stiles and rails arranged to form a window. The stiles and rails each have a channel which faces the window and first and second spaced internal pockets which straddle the channel. Projectile resistant material is disposed in the first and second pockets of each stile, and a rigid rectangular layer of projectile resistant material is centered in the frame window with its outer edges extending into the channels and overlapping the first and second pockets. In a preferred embodiment, layers of acoustical insulation are respectively disposed against opposite sides of the rigid layer of projectile resistant material; and, the panel is supported by an arrangement which includes both a hollow metallic post filled with projectile resistant material, and a connecting joint structure which both blocks and deflects projectiles entering the joint.

Abstract: An apparatus for dispensing essentially dry powder onto a surface to be cleaned such as a carpet. The apparatus comprises a hopper for holding essentially dry powder, a cylindrical applicator, rotatably carried by the hopper and mounted such that one portion of the applicator is in contact with the carpet to be cleaned and the other portion is in communication with the inside of the hopper. A transport cover encloses the applicator when the apparatus is not in use. A hopper cover and sealing means maintains the moisture content of material inside the hopper.

Abstract: A high speed vertical axis floor treating machine for polishing, brushing or scrubbing a floor includes a frame, a drive motor on the frame for rotating a floor treating element, a control handle pivoted to the frame, and a pair of ground engaging wheels mounted on an axle. The frame is resiliently supported on the axle to permit edging of the floor treating element. An adjustment rod engaging the axle raises and lowers the frame on the axle. The drive motor is mounted rearwardly of the axle to counterbalance the weight of the floor treating element about the axle.