Abstract: This process relates to the preparation of stable aqueous latices from solvent dispersions of elastomers and other high polymer compositions. The process in common with that of earlier applications is characterized, inter alia, by the establishment of a flow of gas comprising steam as a continuous phase into which an emulsion of a cement of the polymer is dispersed as an aerosol of latex droplets in a solvent-vapor continuum, followed by coalescence of the latex droplets and separation of the resulting coalesced liquid phase from the resulting solvent-vapor phase.In the present disclosure, special provisions are made for generating from recovered water saturated with solvent (and possibly contaminated with carry-over of macromolecular material and/or emulsifier and/or latex droplets) the gas comprising steam employed in forming the initial continuous phase.

Abstract: A working platform lifting apparatus for an aerial ladder truck, wherein the working platform movable up and down along the ladder is arranged so that it does not interfere with the extension and contraction of the ladder, that when it is stopped at any desired position it is automatically braked, that when it reaches its uppermost position it is automatically stopped and that in an emergency it can be lowered manually. Other merits and details of the construction will be made clear.

Abstract: A working range indicating device for an aerial ladder truck is arranged so that the variable length and vertical angle of the ladder are mechanically detected and the detected values are indicated on a working range indicating board disposed at the operating stand by means of a single mechanically operable pointer. Merits and details of the construction will be made clear.

Abstract: Ore pellets are delivered by a conveyor to the chain grate of a continuously operating baking plant, said pellets being supplied to the conveyor from a pellet former at a fluctuating rate independent of the speed of the conveyor. To afford as nearly constant a flow of the pellets to the baking plant as possible, the quantity of pellets about to be delivered by the conveyor at the delivery station is measured, more particularly by measuring the speed of the conveyor and weighing the conveyor load near said delivery station, and is represented by a first signal which is passed through a high-permeable filter and a proportional control means, to provide a second signal which is combined with a signal representative of a belt speed calculated for an average load, and applied to adjust the belt speed in the direction to maintain said flow as nearly constant as possible.

Abstract: In an air filter unit, after dust collected by the filter bag is shaken off and exhausted and before normal operation is effected, the air inside the filter chamber but outside the filter bag is fed into the filter bag or a separate dust collector, thereby preventing dust particles from being discharged into the atmosphere along with the clear filtered air during the initial stage of normal operation. Other advantages and details in the construction will be made clear.

Abstract: A safety device is provided for association with an aerial ladder truck assembly to automatically detect a weight overload on the ladder unit of the assembly at any given angle. The safety means are characterized by providing ladder angle detecting means in the form of a disk provided with a plurality of contacts and a pointer operatively associated with the ladder which engages a given contact at a given angle position of the ladder, and a load indicating means which actuate a pointer mounted on a disk provided with a plurality of contacts, each of which indicates a load value with the angle indicating contacts and the load indicating contacts of each disk being electrically connected to one another and an alarm device to give an alarm when there is a weight overload on the ladder unit at the angle it is positioned.

Abstract: There is provided a ladder working limit based ladder stopping device for a vehicle equipped with a vertically and horizontally swingable and extensible ladder (or a fire engine truck), wherein a working limit of the ladder is preset on the basis of an extended length of the ladder corresponding to a particular vertical angle assumed by the ladder, so that when the combined situation of the vertical angle and extended length of the ladder reaches said preset condition, the operating mechanism for the ladder is automatically returned to its neutral position while actuating a warning device and turning on a marker lamp, the operating mechanism being then operated toward the safety side, whereupon the marker lamp is turned off to indicate that the ladder is now safe.

Abstract: In a buoyant smoke marker for marine use, the provision of a radio transmitter. The marker can be located from much greater distances than can conventional smoke markers.

Abstract: A connector for joining together a pair of optical strands each of which includes a plurality of dielectric optical waveguides. The connector comprises a block through which extends a polygonal cross-section guideway into which the strands are pushed. In the completed joint, each waveguide of a strand is located in a respective corner of the polygonal cross-section of the guideway and is optically coupled with a waveguide of the other strand. Preferably, the guideway tapers outwardly towards the end faces of the block.

Abstract: A device for use with a high-altitude working vehicle provided with a vertically and horizontally revolvable and extensible ladder and an operator-carrying lifter movable up and down along the ladder, the device being characterized in that it allows the exension and contraction of the ladder only when the lifter is at a predetermined position, thereby securing safety of the operator riding in the lifter. Other advantages and details of the construction will be made clear.

Abstract: A new process is provided for forming polymer material having a number average molecular weight in the range of 500 to 10,000, and which contains hydroxyl groups, by forming a combination of two intraphase polymerization systems by combining suitable proportions of selected monomer material with from 0-95 parts by weight of selected drying oil substance, aqueous hydrogen peroxide, and selected liquid organic mutual solvent-diluent therefor, and heating the combination at sufficient temperatures between 100.degree.C. and 200.degree.C. for sufficient time to form polymer material having said number average molecular weight and containing groups derived from the solution of the hydrogen peroxide in said liquid organic mutual solvent-diluent.

Abstract: A method is provided for attaching a water shut-off control valve to a predetermined position on a water distribution pipe, such as, for example, an installed service pipe, without stopping the passage of water therethrough wherein a T-pipe is attached to the damaged water distribution pipe, a first valve assembly is then mounted on the T-pipe assembly, a hole boring assembly is mounted on the free end of the first valve assembly in watertight relation therewith, and a hole then bored into the water distribution pipe and the hole is closed by the first valve member after which the boring assembly is withdrawn. A second valve assembly having an external housing is mounted to the free end of the first valve assembly by means of the external housing and the valve seat of the second valve housing then inserted through the opening and the water distribution pipe locked in place to shut off the flow of water through either distribution pipe and the external housing is thereafter removed.

Abstract: A weighing method and apparatus is provided wherein an excessive amount or number of objects to be weighed over the predetermined or target weight is distributed among a plurality of weighing machines and weighed with combinations of actually measured values being obtained from the plurality of weighing machines and calculated, and the combination of weights which is equal to or most approximates that of the target or predetermined weight is selected.

Abstract: This disclosure relates to the non-linear correction of electrical signals in waveform transmission and recording systems such as television systems, visual telephone systems, facsimile transmission systems and sound recording systems.

Abstract: Improvements in method for isotope concentration by dual temperature exchange between feed and auxiliary fluids in a multistage system, in a preferred embodiment of which the first flulid is a vaporizable liquid and the auxiliary fluid a gas, comprising steps for improving the heating and/or cooling and/or humidifying and/or dehumidifying operations.

Abstract: Heat-insulating ceramic pieces are made, suitable for assembly to form the internal linings of gas turbine engine ducts, by producing and shaping an adherent mass of short fibre ceramic filaments and silica sol. After the shaped pieces have been dried, the surface of each is coated with fresh silica sol and the coated surfaces subjected to high intensity heating by means of an impinging flame which forms a very hard erosionresistant skin on each piece.