Abstract: Printing apparatus utilizing flexible metal sleeves comprises means for mounting the sleeves in cylindrical configuration in a device which maintains their cylindrical configuration by means of fluid which is applied to and maintained within the sleeves under pressure during their use. The sleeves are of the type which is made by electrodepositing metal in a form that is very thin, readily collapsible and imperforate.Several structures for supporting the sleeves are disclosed. The sleeves are provided on their exteriors with coatings of flexible, microcrystalline, wholly inorganic photoconductive material such as sputtered ultrapure cadmium sulfide.A method of mounting the sleeve is disclosed.

Abstract: An electromagnet having a ferromagnetic core comprising at least one substantially C-shaped yoke terminating in pole pieces (1,2) with opposed pole faces (7) separated by an air gap in which a magnetic field suitable for an NMR imaging process is, in use, produced, the core comprising stacked laminae (6) of electrical sheet steel, which are bent around the C about axes perpendicular to the plane of the C, and at least some of which are spaced apart at the pole pieces to accommodate between the spaced laminae field modifying elements (5,8) which are arranged to improve the homogeneity and/or confinement of the magnetic field in the air gap.

Abstract: A molded flexible fluid conduit and a make/before break pinch valve including a slidably movable pressure member spring biased normally against said conduit in closed condition of the valve, said conduit including a pair of elongate longitudinal unitary purchase formations capable of cooperating with slots carried by the valve whereby the conduit forcibly is pulled or stretched in diametrically opposed directions upon actuation of the valve subsequent to periods of closure so as to force the conduit open to permit flow.

Abstract: A process and apparatus for filtering a polymer which passes through a heated, high pressure filtering chamber across which a filter members passes and in which sealing plugs made of the substance being filtered are formed within entry and exit zones thereof. A plug removal zone is provided between the entry port for said filter and the outflow aperture of the filtering chamber. The zone is provided with a valve to permit removal of sealing plug material when in a heat-softened state. A cooled, substantially rigid plug of polymer is formed initially. Thereafter, the plug is heated at one end to soften it and to permit displacement of a part of it through the valve by fresh, hot polymer. In alternative embodiments, the plug removal zone is not needed and the plug is permitted to pass into the passage but is then diverted before meeting the main flow of substance being filtered.

Abstract: A plant for de-icing especially surfaces of aeroplanes, comprising the use of at least two sources (10, 12) of liquid media that are different from each other and capable of being sprayed separately or as a mixture, comprising a number of positive liquid pumps (16, 22) corresponding to the number of media, which pumps all have the same capacity or a predetermined interrelated capacity ratio and terminate in a common spray pipe (24). The connection of the liquid pumps to the sources includes at least one of the sources to at least one of the liquid pumps. In a hydraulic system comprising hydraulic motors (56, 52) for driving the liquid pumps (16, 22) at least two of motors are connected to a common hydraulic pressure pump (32) controlled by way of pressure compensation (33) to work with at least two pressure stages subject to a ratio corresponding to that of the capacity of at least one liquid pump to the total capacity of both liquid pumps.

Abstract: An improvement in the art of bowstring roof truss construction comprising an altered web pattern in which the diagonal and vertical webs, normally converging at points alternately within the geometric confines of the top chord and the bottom chord, intersect or converge rather at points intermediate between top and bottom chord on massive vertical webs. This system facilitates more head room and walk-through space where a floor is framed into the bottom chord of the truss. This system comprises (1) an arched top chord with intersecting vertical and diagonal webs, (2) displaced intersection points of the diagonal webs onto the massive vertical webs, (3) a suspension assembly to hang the bottom chord using direct bearing and (4) a separate assembly to transmit the longitudinal truss-action forces from the vertical webs to the bottom chord.

Abstract: An improved method of manufacturing thin film transistors. A gate metal is patterned to form a gate electrode and a drain, gate and source contact pad for the transistor. To reduce shorts and capacitance between the gate and the source or the drain, a dielectric is patterned to form a central portion over a planar portion of the gate region and to cover any exposed gate edges.

Abstract: The present invention relates to a ladder anchor for stabilizing a ladder while in use.The ladder anchor comprises a hollow member having at least a wedge-shaped front portion provided with a closable orifice for filling the member with ballast or discharging ballast therefrom, the member having a ground engaging surface and a top surface,the top surface having therein at least one recess for receiving one or each of the longitudinal struts of a ladder and providing a foot receiving surface between the recess or recesses and the base of the member.Preferably, the member can be filled with water as the ballast.

Abstract: A hinge bolt set is disclosed for improving security of hinged doors and the like, comprising a circular metal rod (1) adapted to be located in an edge face of a door (D) adajcent to but spaced from a hinge (H) and a synthetic resinous keep (7) adapted to be located in a opposing face of a door jamb (J), the keep having a tapered cavity (9) therein to receive a projecting end of the rod (1), which cavity terminates in an arcuate surface 13 to receive the bolt (1). The rod may be held in place by a knurled portion (3) and the keep with screws (17).

Abstract: There is described a photomechanical method for forming pressure sensitive transfer reproductions of color images, either single color or multicolor, upon a substrate involving the forming of a base coat protective layer on a substrate, applying one color ink layer on the base layer and a white ink overlayer on the one color ink layer. The surface of the white ink overlayer is powdered and a layer of photoresist composition is applied. The photoresist covered layered substrate is exposed to a light source through an image carrying photographic negative film to harden the photoresist at the imaged areas thereby forming a mask. Nonhardened photoresist composition areas along with their underlaying layers are removed using stepwise solvent development steps. The steps are repeated where different ink colors are to be applied to form a multicolored image.

Abstract: The invention relates to a gear grinding machine for straight toothed or oblique toothed spur gears, in which a main slide (2) reciprocable on the machine column and an auxiliary slide (7) reciprocable on the main slide are provided for producing the rocking motion. The direction of movement of the auxiliary slide (7) is at an angle to the direction of movement of the main slide (2). The auxiliary slide (7) is linked to a slider movable in a guide slot (9). In order to employ the machine also for form grinding, the guide slot (9) is adapted to be turned parallel to the direction of movement (II) of the slide (7) and is locked in this position. Thus, a gear grinding machine is created which is suitable both for generation grinding and form grinding.

Abstract: A ladle for transporting and pouring molten metal includes a pair of nested shells which are separated by a heat-insulating layer of refractory material. Heat exchange or venting conduit means communicate between the refractory layer and ambient atmosphere to dissipate heat conducted to the refractory layer from the molten metal through the walls of the shells whereby to prolong the useful life of the shells.

Abstract: A contact of a connector made of an elongated resilient material and having an inner end fixed to a connector housing and a midway to be in contact with a mating contact of another connector. According to the invention, the contact comprises a substantially straight portion extending from a contacting portion of the midway with the mating contact to the fixed inner end, and an outer portion being bent in zigzag extending from the contacting portion to the distal end abutting against a surface of the connector housing, thereby obtaining a sufficient contacting resilient pressure to realize stable and reliable connecting condition with the mating contact and simultaneously achieving small-sized connectors and high speed signal transmission.

Abstract: An electronic, attention attracting calendar including a base having a front surface exhibiting conventional calendar information indicia, means associated with the front surface for lighting selected areas thereon, circuit means for selectively activating and de-activating the lighting means to light at least one of the selected areas, and control and memory means for programming the circuit means.

Abstract: A fluid flow control device of the type wherein piezoelectric spring-like benders operably are associated with impacting members, each capable of deforming a membrane to control flow past a valve seat upon change in the electrical condition of the benders. Each bender and impacting member is isolated from the fluid by the membrane. The benders may be mounted individually arranged side-by-side for multiple use or can be grouped in a comb-like configuration. A mounting is provided for the benders which permits the force exercised on the impacting member by the free end of the bender to be adjusted and maintains the electrical isolation of the benders one from the others. The mounting as installed provides a stationary or an adjustable fulcrum point and a clamping member cooperating with the fulcrum for fixing the adjustment.

Abstract: A device for indicating a definite direction, comprising a screen located in front and a screen located behind, which comprise opaque lines (3) separated by transparent interstices (4), whereby a moire pattern arises when the device is viewed. The screens (8,9) have different division. The opaque lines (3) have the same width in both screens (8,9).According to the invention the device is characterized in that one of the screens (9) is provided with only one opaque line less than the other of the screens (8), that in said one screen the width of a transparent interstice plus the width of an opaque line (3) is greater than or about equal to 1.5 times the width of the opaque line, but smaller than 1.9 times said width, preferably 1.5 times to 1.8 times the width of the opaque line. The two screens, further, are positioned symmetrically in relation to each other so that a central opaque line of one of the screens symmetrically overlaps a central transparent interstice of the other screen.

Abstract: Improved vessel closures and method of forming the closures. The vessels each include an elongate filling/dispensing tube which has an open end which is sealed by the closures of the invention which can be disposable or reusable. The disposable closures can be formed by heat sealing the open end of the tubes or folding the open end of the tubes back upon the tube and shrinking material around the tube and open end. The reusable closures can be formed by plug-type, heat sealed ends which are shaped to be reinserted into the tubes and rings which can be placed over a folded over end and the tube. The vessels can include an adhesive pad to affix the vessel to a convenient surface.