Abstract: 4-Hydroxy-4'-isopropoxydiphenylsulfone useful as color developer for heat-sensitive color-developable recording material.

Abstract: A free stop retainer which comprises a retainer body formed with an engaging portion and an article retaining portion, a post formed with at least one groove formed longitudinally, the engaging portion elevationally slidably engaged in a longitudinal rail hole formed at the side wall of the post in such a manner that the article retaining portion is projected from the rail hole outwardly, the retainer body formed with a tapered surface opposed to the side wall of the post in such a manner that the space to the side wall becomes the maximum width at the lower end thereof and the minimum width at the upper end thereof. A lever is rotatably formed with a stopper at one end thereof and the stopper is guided on the tapered surface. The lever is elastically urged by a spring in the direction that the stopper urges the side wall of the post.

Abstract: A method of fabricating an image fiber base material having a number of longitudinally drawn and aligned state optical fiber strands comprising the steps of assembling optical fiber strands of more than two different diameters. This eliminates the drawbacks of the conventional image fiber by arranging the cores at random and can reduce a moire produced when connecting to a TV camera, and does not produce dislocations or pinholes of core arrangement in the image fiber since a number of cores of the image fiber are arranged at random and are covered with an integrated cladding.

Abstract: Hot-dip zinc alloy coated steel products coated with a Zn-Al-Si-Mg alloy having a composition of between 3.5 and 5.0 wt % aluminum, between 0.02 and 0.5 wt % silicon, between 0.01 and less than 0.05 wt % magnesium, and remainder zinc with unavoidable impurities.

Abstract: The present invention relates to a novel process for producing 3-chloro-1-formyl-4-phenylpyrroles having the general formula [I] as a useful fungicidal agent in agriculture and horticulture which is manufactured from the starting material of 3-phenyl-2,2,4-trichlorobutanal having the general formula [IV] as set forth in the following reaction formulae:By means of obtaining a pyrroline derivative having the general formula [III] as the intermediate compound, its production operation is greatly simplified and its yield rate is raised in comparison with the conventional processes. ##STR1## where X denotes the same or different kinds of substituent(s) being chosen from the group consisting of halo, nitro, and trifluoromethyl and n denotes zero or an integer of 1 or 2.

Abstract: The present invention relates to an original holding plate hinging mechanism for a copying machine, a printing machine or the like. When a thick solid original, such as a book, needs to be covered with an original holding plate, the pivotal point of the original holding plate is raised so that the original holding plate is placed practically horizontally on the thick solid original when closed. The original holding plate hinging mechanism comprises a supporting member attached rotatably to a member of the copying machine, an original holding plate joined at the rear end thereof to the free end of the supporting member so as to turn relatively to the supporting member, and a resilient means interlocked with both a member of the copying machine and the supporting member to control the torque for turning the supporting member.

Abstract: A photo-curable resin composition which comprises mixing urethane-acrylate resin [I], which is obtained by reacting components A and B, i.e.,Component-A: Polyisocyanates containing polybutadiene withComponent-B: Acrylate or methacrylate having a hydroxyl group in the molecule thereof anda photopolymerization initiator [II].The cured composition is suitable as an additive plating resist in the manufacture of electronic circuitry.

Abstract: A cyclohexane derivative having the formula ##STR1## wherein X is 2-(ethylthio)propyl or 2-(4-chlorophenylthio)ethyl.

Abstract: An ether compound is advantageously produced by an ether exchange reaction of a different ether compound and a hydroxy group containing compound in the presence of a heteropoly acid or an acidic salt thereof as the catalyst. The catalyst is novel and is extremely effective to the present process and brings about less by-products compared to other processes or other catalysts.

Abstract: A fingertip exerciser comprising two balls each having a bore extending centrally therethrough and a connector inserted through the bores of the balls and rotatably connecting the balls together. The faculty of the fingertips can be developed by rotating the two balls with the fingertips.

Abstract: 4-Hydroxy-4'-isopropoxydiphenylsulfone useful as color developer for heat-sensitive color-developable recording material.

Abstract: A double panel sliding door arrangement where the two panels will lie in one plane when shut, said arrangement comprises upper and lower rails disposed on upper and lower wall portions of a door mounting frame to laterally move and guide right and left door panels by means of rollers provided at the upper and lower ends of the right and left sliding panels. The rails each have at the right and left sides thereof an oblique portion bent backwards, a rail switching portion and a guide portion in such a manner that one panel can be shifted beforehand, and to switch the rail. The sliding panels can be fully closed without a gap between the panels with only one rail without the necessity of chamfering the inner ends of the panels.

Abstract: A seal device for a gate valve is disclosed, in which annular members facing the front and rear surfaces of a gate valve member having a through hole are coupled to a valve cage by inner and outer bellows, each of the annular members has an annular recess formed on the side facing the gate valve member and closed by an annular mirror surface finished thin plate secured by welding to an opening thereof, the individual bellows are elongated by fluid under pressure supplied into annular spaces defined by the inner and outer bellows, and the annular mirror surface finished thin plates are strongly urged against the gate valve member by the pressure of the fluid forced from the annular spaces into the annular recesses. Edge portions of the annular mirror surface finished thin plates are to be very firmly mounted to the annular members, and the mechanical strength of the thin plates is to be increased.

Abstract: A method of fabricating a polycrystalline silicon wafer, which method includes the steps of radially outwardly flowing molten liquid of silicon base material on the wafer forming surface of a turntable mechanism by means of centrifugal force, thereby forming a thin molten liquid layer in a prescribed atmosphere, and cooling and solidifying the same. An apparatus for fabricating the wafer is used to carry out the method with a recover tray arranged at the wafer forming surface for receiving the excessive silicon liquid scattered, and a wafer tray placed on the recovery tray. The wafer forming surface is cooled with coolant flowing in the wafer forming mechanism. Thus, large crystalline grains can be grown on the wafer in free states with the atmosphere from the inner surfaces of the casting mold.

Abstract: The stroke apparatus contemplated herein comprises a plurality of annular races each having an inner annular surface of an arcuately bulging cross-section and rotatably accommodated in a support. These annular races are rotatably journaled in a housing in an alternately offset or staggering fashion. A rotary shaft extends through these annular races, and one of the race supports has a pivotal shaft placed at the center of, or at a shifted position from, the corresponding other races and the upper and lower race supports have their pivotal shafts placed in positions shifted to the opposite sides of the rotary shaft. The bulging cross-sections of each of the annular races is forced in contact with the rotary shaft. A guide stem is provided in parallel with the rotary shaft and engaging said housing for sliding movement therealong.

Abstract: A method of fabricating an optical glass base material by injecting and depositing fine glass particles produced by chemically reacting glass stock which comprises means for growing the fine glass particles in a depositing direction to form porous rod-shaped base material, support means for supporting the porous rod-shaped base material after growing, and heat treatment means for sintering at least the outer periphery of the rod-shaped base material in a semisintering state before supporting the rod-shaped base material by said support means to harden the same. Thus, since the rod-shaped base material is held in the stable state through the support means, the mechanical strength of the base material is strengthened strength by the semisintering hardening through the heat treating means before being supported by the support means, the base material is not deformed nor damaged in the supported state, and a large base material may be fabricated.

Abstract: An apparatus for measuring the melting and boiling points of gas has a heat insulating tank, an inner tank within the insulating tank, a sample cell within the inner tank with a sample gas temperature measuring system. A piping system is provided having a heating route and a cooling route. The heating route has a heating flow rate control valve and a heating heat exchanged heated by a heating source connected in series with the control valve. The cooling route has a cooling flow rate control valve and a cooling heat exchanger connected in series with the cooling flow rate contorl valve. The heating and cooling routes are in parallel. The heating source for heating the heat exchanger has a Joule-Thomson expansion valve while the cooling part for cooling the cooling heat exchanger is coupled to a compressor for compressing and supplying a refrigerant such as Freon.

Abstract: An apparatus for continuously freezing liver pieces which comprises a freezing box having an inlet and an outlet, a conveyor movable from the inlet to the outlet of the freezing box and having a mesh belt, a number of nozzles provided laterally through the box at the upside of the mesh belt of the conveyor for blowing gaseous helium, a supplying guide portion formed at the head of the inlet at the upside of the mesh belt for supplying and placing the liver pieces, a rotatable roller journaled at the striking-off and exhausting portion disposed inside the striking-off and exhausting portion at the head of the outlet at the upside of the mesh belt in an outside contacting state laterally of the mesh belt, the roller having a number of striking-off projections projected from the surface thereof for striking-off the frozen liver pieces on the mesh belt by the insertion of the projections into the mesh belt.

Abstract: Feed additives for ruminants comprises tablets or granules of a mixture of biologically active ingredient(s), chitosan and protective material(s) which are one or more substance(s) selected from the group consisting of saturated or unsaturated aliphatic mono-carboxylic acids having 14 to 22 carbon atoms, hardened vegetable oils and hardened animal oils.By containing chitosan, said feed additives easily pass through the rumen and are easily digested by digestive organs from abomasum, consequently said biologically active ingredient(s) are efficiently absorbed by oral feeding to ruminants.

Abstract: The invention relates to a device in a universal head for rocking a camera attached to a tripod. The device includes a table attached to the upper end of the tripod and provided with a central boss protruding upright therefrom, and a rotary sleeve mounted on the table for rotation in the horizontal directions and in such a manner as to be rocked to the left and right. As the rotary sleeve is rotated to the left and right, the position of contact point between the cam portion and the cam receiving member is changed to rock the camera to the left and right together with the tilt bed.