Abstract: A cartridge tape drive assembly for use with a cartridge tape, includes a housing having an opening to receive the cartridge tape, and a slidable tape drive and mounting assembly for adjusting the position of the cartridge tape inwardly while in the tape drive and outwardly for removal of the cartridge tape. The housing includes a support tray having elongated apertures for joining the tape drive to the support tray and allowing the tape drive to move inwardly and outwardly relative to the support tray. The slidable tape drive and mounting assembly includes a connector for joining the tape drive along the elongated apertures, and a latch device for adjusting the position of the tape drive along the elongated apertures. The cartridge is in operative engagement in the tape drive, i.e., in operative engagement with a magnetic head in the tape drive, during the inward and outward movement.

Abstract: An oil supply passage is provided for connecting an oil chamber with a valve chamber, an oil feed passage for connecting a valve chamber with a crank chamber, and an oil return passage for connecting the crank chamber with the oil chamber. The oil return passage is connected with the crank chamber via a plurality of return vents formed on an inner surface of the crank chamber at approximately equal intervals. Providing a bypass passage, one end of the bypass passage opens adjacent to a ceiling of the valve chamber. Another end of the bypass passage opens into a portion facing the restrictor formed adjacent to an outlet of the oil feed passage. Accordingly, the crank chamber and the valve chamber are lubricated by pressure fluctuations of the crank chamber according to the reciprocation of a piston. Thus, it is possible to lubricate the engine even when the engine is tilted in any direction.

Abstract: Disclosed is a lubricating system for lubricating moving parts in a crank case of a four-stroke-cycle engine. The lubricating system comprises an oil tank for holding oil, an oil passage connected to the oil tank and an engine crank chamber, an oil supply means for supplying fine particles of oil held in the oil tank to the moving parts in the crank chamber via the oil passage, and an oil removing means for removing the fine particles of oil applied to the moving parts in the crank chamber, from the crank chamber without forming oil accumulation. To supply the fine particles of oil to the moving parts in the crank chamber, the oil of a liquid form is thrown to impinge against the moving parts in the crank chamber or is mixed with a gas entering the crank chamber.