Abstract: A circulating type ball spline bearing is characterized by: U-shaped channels formed axially on the inner periphery of the outer sleeve and each having a pair of concave raceways substantially of the same curvature as the ball bearings on and along opposite side walls thereof; non-load carrying ball grooves formed axially on the inner periphery of the outer sleeve at a predetermined distance from the U-shaped channels such that the balls in the non-load carrying grooves have a small contact angle close to the torque direction; U-shaped turn grooves formed on the inner periphery of the outer sleeve continuously to the concave raceways and non-load carrying ball grooves for turning the direction of circulating balls; U-shaped turn grooves formed in each one of the end lids fixedly fitted on the opposite ends of the outer sleeve for reversing the direction of load carrying or non-load carrying balls; and a number of slits formed in the retainer in projected wall portions in engagement with the U-shaped channels

Abstract: A device for adjusting the position of a drive element for automatically opening and closing a sliding door which is automatically opened upon stepping on of a mat switch by a customer who intends to enter a store and is automatically closed upon releasing of the mat switch by the customer who entered the store. The drive element of the automatically opening and closing sliding door is adjusted by merely once manually opening and closing sliding door. The drive elements such as limit switches are slidably mounted, not on the sliding door but on an endless wire such as an endless belt. Thus, adjusting the drive element so that the sliding door may stop just upon completely opening or closing of the door when mounting such an automatic sliding door can be rapidly and readily accomplished.

Abstract: An arrangement is described for controlling a winch used in mining machinery, wherein the direction of operating a winch and speed thereof are controlled by changing the position of a control element of a fluid pump for supplying a fluid into a fluid pressure recirculating circuit, by a device incorporating the fluid pressure recirculating circuit and a control circuit. The arrangement is characterized by feeding ON/OFF signals for giving instructions of a position to a control element, by a bi-polar pulse generator. Pulse from the bi-polar pulse generator are fed to a reversible BCD counter by pressing push buttons, and comparing a voltage generated via a D/A converting circuit from the reversible BCD counter with a voltage generated from a potentiometer coupled to the control element according to the position of the control element to be selected, thereby controlling the instruction of the position of the control element; and setting a speed of the winch by pressing the push buttons.

Abstract: A hinge arrangement for a record player to properly distribute the load over a glass cover and avoid imposing an unduly large load around the mounting holes. There is provided a cover retainer with a pair of hinge plates having side plate portions which define a receiving space for a pair of anchoring lugs and a hinge pin, on one of said hinge plates. The side portions on the other hinge plate are received by and fixed in said defined space and retained at the center point by the anchoring lugs so as to prevent the other hinge plate from rotating back away from the one hinge plate. Attaching screws are provided on one of said hinge plates for fixing the cover inserted in the cover retainer.

Abstract: A waterwheel system for aerating water in sewage treatment tanks and fishponds, etc., an aerator waterwheel system in which a plurality of honeycombed tubes are arranged, and securely held in place, encircling a rotary shaft, between discs mounted on both ends of the said rotary shaft and parallel thereto, thereby forming a waterwheel; this waterwheel is disposed near the water surface of the water tank so that the honeycombed tubes situated at the bottom are immersed in water; the aeration of water is made by turning the aforementioned waterwheel by use of a driving means at such a rotary speed that heavy splashing will not be produced from the aforementioned waterwheel; this way of aeration of water is so effective that this system is economical, and is finding wide uses such a sewage treatment, supply of oxygen and cooling of hot and warm water.

Abstract: A device for preventing the rotation of the bobbin case member of a horizontally fully rotatable shuttle comprises a retaining member adapted to contact one portion of the inner shuttle member for retaining the bobbin case member against rotation. One of the contact faces of the bobbin case member and the retaining member is partly formed with a recess. The retaining member is reciprocally movable along the contact face of the bobbin case member to prevent the rotation of the shuttle member and permit release of an upper thread free of resistance.

Abstract: A linear motion ball bearing arrangement having an outer sleeve which has load carrying ball grooves in its inner periphery and fitted in a tunnel-like axial cavity of a casing. The non-load carrying ball grooves are formed by a simple milling and shaping operation so as to provide a linear motion ball bearing unit at a reduced cost.

Abstract: A disposable urination bag having a liquid impermeable exterior having a slit which is above the tangent line of two rolls of absorbant material, thus forming a cavity to accept the male genital organ.

Abstract: A document hold-down cover for a copy machine comprises a lifting means, a hinge means, a deck plate of said copy machine, a hold-down-cover, the lifting means is arranged between said deck plate and said hold-down cover, said hinge means is attached between said lifting means and said hold-down cover. According to the invention, when copying thick material which is put on the contacting glass for copying the closed-hold-down cover comes into parallel with the material on the glass since the lifting means is lifted by leverage. When the material is taken off the glass cover, the lifting means comes down or returns back to the first position by gravity. The hold-down cover can be opened and closed in both the first position and the lifting position.

Abstract: .alpha., .beta.-unsaturated-ketones are synthesized by reacting with an aldehyde and an alkali metal salt of acetoacetic acid in the presence of an aliphatic secondary amine in the mixture of heterogeneous solvents producing an oil layer and a water layer.

Abstract: An electronic typewriter comprising: a keyboard having a plurality of keys and generating an encoded signal in response to the depression of each key; a printing unit having a print wheel with a plurality of type elements disposed around the periphery thereof, a step motor for rotating the print wheel, a print hammer for impacting the type element brought to a printing position, an ink ribbon, and a ribbon drive mechanism for bringing the ink ribbon to the printing position; and an electronic control circuit for coupling the keyboard to the printing unit. The electronic control circuit controls the rotation of the step motor according to the encoded signal received from the keyboard so as to bring a type element selected by the encoded signal to the printing position within a short time for executing quicker printing, and further controls the action of both the print hammer and the ribbon drive mechanism in response to the rotation of the step motor.

Abstract: There is disclosed a slide roller bearing including a race body, circulating rollers, spacers and upper and lower casing covers. The precision-machined track body defines on its circumference an endless circulating track which is provided with at least a pair of longitudinal channels and a center bank on the load-carrying side thereof and which is formed by a flat surface on the non-load-carrying side thereof. The spacers which retain the rollers in aligned state along the circulating track are each formed by a center supported body and a pair of spacing strips integrally formed at opposite lateral sides of the center body. The center body is provided with front and rear projections with upright sliding faces perpendicular to the axis of the rollers. The spacing strips are smaller than the rollers in length and have a thickness smaller than the diameter of the rollers.

Abstract: This invention provides a hydraulic elevator installation in which a variable hydraulic pump supplies pressure fluid to a hydraulic actuator connected to an elevator cage. The hydraulic pump functions to operate as a hydraulic motor with the pressure fluid discharged from the hydraulic actuator when the elevator is descending. The hydraulic pump is driven by an induction motor. The induction motor begins to function as an induction generator, recovering potential energy on the high speed rotation of the hydraulic motor while it is generating electricity. When the hydraulic pump has started its function as the hydraulic motor.

Abstract: A linear ball bearing arrangement has an elongated track table over which is disposed a linear ball bearing main body, of which the front and rear end surfaces have side caps. Also, four concave axial track grooves are formed axially in the main body in parallel. Corresponding axial track grooves are defined in the track table. Non-loaded bearing ball paths are disposed adjacent to the four axial grooves. The combination of the four concave track grooves in the main body and the corresponding track grooves in the track table form the loaded ball paths while the end side caps connect the loaded ball paths to the non-loaded ball paths. The loaded ball paths and the non-loaded ball paths are symmetrically disposed around the center axis of the track table and the main body.

Abstract: A weighing balance to provide an average weight to an object which tends to move while being weighed such as a laboratory animal. The object to be weighed is placed on a receiving pan which provides an electrical analog output signal corresponding to the weight of the object. This signal after passing through an amplifier is converted to a digital electrical signal fed to a data input control means. A level detector setting means allows an output from said control means only when the weight on the balance reaches a predetermined level. The output from the control means is fed to a memory having a plurality of registers which store this information. Coupled on one side to this memory is a comparator which is also coupled on a second side to said control means. Also coupled to said comparator means is an allowable range means, sampling time means, and average calculating means. The average calculating means feeds an output to a printer.

Abstract: An automatic tone arm returning device in a record player which comprises: pulse generator means for producing pulses whose cycle is proportional to the speed of the tone arm movement during record playing means for detecting the completion of record playing by measuring either the pulse width, the number of pulses produced in a unit of time, or the time interval between the pulses; and a Schmitt trigger circuit inserted between said two means and activated while the pulse is within a predetermined range of level; whereby the tone arm can be prevented from being return erroneously by the eccentric recorded grooves on record when the record is still being played.

Abstract: A fungicidal composition containing as the active component a mixture of (I) a compound having the formula of ##STR1## wherein R.sub.1 is methylene or C.sub.2-4 alkylene, andR.sub.2 is C.sub.1-4 alkyl,and(II) a compound having the formula of ##STR2## wherein R.sub.3 is C.sub.1-2 alkyl.