Abstract: A low speed adaptor for use in a sewing machine driven by a main motor, particularly to one which employs a main transmission belt and an auxiliary transmission belt to change the speed of the sewing machine from high to low. This main transmission belt passes over the belt pulley of the main motor, then over the transmission belt pulley of the adaptor, and then over the belt pulley of the sewing machine; while, the auxiliary transmission belt passes over the belt pulley of the auxiliary motor and over the belt pulley of the adaptor body. The adaptor comprises an electromagnetic clutch and brake device capable of selectively switching the drive of the sewing machine from the main motor operating at high speed to the auxiliary motor operating at low speed.

Abstract: An apparatus for mixing gas with liquid comprising:(a) an inner cylindrical member comprising an elongated tube having upper and lower ends and a plurality or turbines, which are free to rotate about their longitudinal axis, mounted within the tube, the turbines being spaced apart from one another and so constructed that adjacent turbines have different rotational direction or velocity;(b) optionally, an outer cylindrical member comprising an elongated tube having upper and lower ends and a plurality of openings in the lower half of the tube wall;(c) a base member to which the lower ends of the outer and inner cylindrical members are attached so that the lower ends are sealed, the outer and inner cylindrical members being arranged in a concentric manner; and(d) a gas inlet pipe for introducing gas bubbles into the apparatus.

Abstract: A continuous injection syringe for veterinary use comprising a cylinder, a glass tube disposed within the cylinder, one end of the cylinder and tube being attached to a cylinder head having a centrally disposed orifice, the orifice being blocked and unblocked by a movable stuffing leaf, a needle base fitted over the cylinder head for the insertion of the blunt end of a hypodermic needle, a screw cap fitting over the other ends of the cylinder and glass tube, a spiral pipe being disposed through a central opening in the screw cap, a piston rod disposed within the spiral pipe, the end of the piston rod which is located within the cylinder and tube being provided with two valves and the other end being attached to a press handle, the piston rod and press handle having a hollow conduit through which liquid medicine flows, and a coil spring disposed outside the cylinder and tube, the spring urging the piston head away from the end to which the needle is attached.

Abstract: This invention relates to a writing implement comprising an outer casing, a coil spring disposed within the casing, an inner tube inserted through the coil spring and having a plurality of presharpened leads stored therewithin, and a capping member inserted over the open end of the inner tube. The front (writing) end of the inner tube is split into two clamping halves. The front end of the coil spring is formed into a hooked portion which slides along the slot formed between the clamping halves to allow the expelling and feeding of presharpened lead pieces into the clamping halves.