Abstract: An electric plane with no or minimal sole plate. In a first embodiment the motor and drum are mounted in parallel in a housing with a guard that moves up and down to reveal varying amounts of cutting drum. In a second embodiment a cutting drum is mounted coaxially with a motor.

Abstract: An annular blower which has an internal baffle. The blower is used to attenuate glass fibers centrifuged from a spinner in a rotary fiberizer process. The internal baffle directs and uniforms gas flow in the blower and decreases turbulent flow conditions in the gas flowing from the periphery of the blower.

Abstract: A downwardly moving cylindrical veil of mineral fibers is distributed to form a mineral fiber product by impinging on the interior of the veil jets of gas from an internal blower positioned within the veil to increase the angular velocity of the veil, thereby causing the veil tobreak up into an incoherent flow of mineral fibers.

Abstract: Apparatus for rotating a spinner for centrifuging mineral fibers for molten mineral material comprises a quill upon which the spinner is mounted, a pin for engaging the quill and applying torque thereto, a pin carrier for holding the pin and applying rotational force thereto, a pin carrier housing for urging the pin carrier, and thus the pin, upwardly with respect to the quill, and a spindle, separate from the pin carrier housing, for rotating the pin carrier.

Abstract: The lower portions of the guard rings of a row of rotary fiberizing units are surrounded by an elongate rectangular noise suppressor having front and rear panels extending lengthwise of the row and transverse end panels connecting the front and rear panels. The panels have impervious sheet steel at their outer surfaces, but are provided with screens of expanded steel at their inner surfaces and are filled with a sound deadening material. Between each pair of adjacent fiberizing units a panel-like expanded steel basket full of sound deadening material is suspended immediately below the guard rings and connected to the front and rear panels. The front panel is segmented into removable doors enabling the fiberizer units to be moved out of the noise suppressor for inspection or repair.