Abstract: A multi-part composition is provided which is suitable for use as an adhesive, a potting compound, a coating or a sealant. It consists of a polymerizable acrylate formulation and an activating formulation, the latter usually comprising an amine-aldehyde condensation product diluted with a liquid vinyl ether; liquid epoxides may also be included as diluents in the activating formulation.

Abstract: A radiant electric heater is manufactured by a method which involves providing a base of microporous thermal and electrical insulation material having at least one groove formed in a surface thereof, and providing an elongate electrically conductive strip to serve as a heating element. The elongate electrically conductive strip is located edgewise into the groove and surface pressure is applied to the base of microporous insulation material in a region adjacent to the strip to deform the base and to urge microporous material of the base into contact with the strip so as to secure the strip in the groove.

Abstract: Apparatus for dispensing liquid from an inverted bottle having a neck through which the liquid is discharged, is provided with a mount 32 having a feed tube 34 to project into the neck of the bottle. The feed tube forms part of a reservoir 152 which incorporates a drainage channel 153 to sealably receive the neck of the bottle with closure of drain valve 144. Water travels from the feed tube 34 to a cold reservoir 160 comprising a flexible bag 163 received within a fixed rigid outer 162. Cooled water leaves the bag 163 to a discharge valve 168. The feed tube 34 may also supply a hot water reservoir (FIG. 3 ) which is also replaceable. To maintain strict hygiene, the manifold 152 and both reservoirs are completely replaced at intervals together with the interconnecting pipework.

Abstract: An insulation system comprises a J-shaped piece and an L-shaped piece, each piece having an end portion of circular cross section. One of the end portions is enlarged relative to the other, thus enabling telescopic interengagement of the end portions and rotatable assembly of the insulation pieces.

Abstract: In a turret mill of the kind in which a doughnut 20 moves with the tool head along a threaded vertical rod 1, a tube 4 is slidably mounted on the rod 1 between end plates 5 and 6 which support a turret 7. The turret 7 can be rotated to bring a series of axially adjustable stop elements 9 into position for contact with the doughnut 20, allowing downward movement of the tool head to be stopped in various quickly selectable positions. Such contact with a stop 9 causes the lower plate 6 to act on a head 3 secured to rod 1, which in turn operates a cutout 17 via a lever 16 to stop vertical feed of the tool head. Upward movement of the doughnut 20 engages the upper plate 5, which acts on the rod 1 via a plunger 25 and lever 26, causing the rod to move downwards. This again operates the cutout 17 to stop the tool head.

Abstract: A visual indication is provided in a heater of an electric cooking appliance which incorporates a user-operable multi-position switch for switching the heater from one power output to another. The heater incorporates at least one heating element which is capable of emitting a significant amount of visible radiation, the at least one heating element being de-energized and subsequently re-energized as the heater is switched from one power output to another. Such a heater is of particular value where the heating element is capable of emitting fewer distinct levels of visible radiation than the number of distinct heat settings of the heater selectable from the multi-position switch. The heating element may be de-energized and subsequently re-energized only between adjacent heat settings in which there is no substantial change in the level of visible radiation.

Abstract: The method, apparatus and system utilize the saddle on which the stationary head of an automatic screw machine is normally mounted, for supporting a cylindrical boring bar. Rotation and advancement of the bar on the saddle surface enables reboring of the cylindrical opening through the rotary head-mounting section of the machine, which rebored opening will be precisely coaxial with the surface of the saddle.

Abstract: A method for visibly marking an area contaminated with transformer oil or other organic liquid uses a marking composition that consists of a colorant held within a solid carrier material, the colorant being such as to effect a visibly perceptible change upon contact with the organic liquid. The carrier material may be an absorbent that permits delivery of the colorant through capillary action, or the colorant may be encapsulated by a cell-forming matrix material that interacts with the contaminating liquid to effect release.

Abstract: An array of superconducting bolometers, assembled with a superposed interference layer of graduated thickness, provides a microelectronic detector assembly that discriminates radiation impinging thereon, as a function of wavelength, and that can be used for transform spectroscopy, color-imaging, and the like. The interference coating will preferably be of step-like form, with each plateau of the structure being of the same spatial extent as the bolometer with which it is associated.

Abstract: The structure of the invention serves to support mirrors defining a reflective channel, which can dynamically be reciprocally widened and narrowed, as in a two-beam interferometer. It is effectively divided, by pivot points on an intermedial axis, into two opposite portions of equal mass, thus affording to the structure immunization against translational forces transmitted through those points. The opposite portions also have their centers of gravity remotely located, so as to generate a counteracting torque in response to moments of rotational inertia transmitted through the pivot points. In the structure, integrally formed planar pieces are assembled to provide contiguous elongate elements and an interposed connecting web element, a plurality of which web elements produce a flexure joint.

Abstract: A tree stand consists of mounting structure and a platform member, the platform member being rotatable about the mounting structure to permit facile reorientation without need for dismounting by the occupant. The platform member may itself provide the necessary seating and standing areas, or those parts may be provided as a separate assembly.

Abstract: A letter blank has leading and trailing edges (1 and 2) and side edges (3 and 4). The blank includes a central oblong rectangular letter section (108) and a marginal edge section (205), the latter being joined by perforations (216) and carrying adhesive areas (218, 219 and 220). The letter section (108) can be folded into four portions (212, 213, 214 and 215) by folding along crease lines (9, 10 and 11), forming its own envelope which can be secured by means of the adhesive areas. In the folded configuration the shorter portions (213 and 214) are fully enclosed between the longer portions(212 and 215).

Abstract: A band saw machine utilizes a column assembly in which the column is integrally formed from steel plate. The blade-carrying pulleys are mounted on one side of the column, which is mounted to pivot about a selected axis. A double-acting saw employs two confronting column assemblies.

Abstract: At least one edge of a substantially planar panel of microporous thermal insulation material is shaped by first restraining the planar faces of the panel so as to resist deformation of the faces of the panel adjacent to the edge of the panel to be shaped. A forming member is then urged against the edge of the panel so as to shape the edge, the forming member being profiled such as to cause the edge of the panel to be recessed. The forming member is then removed from the edge of the panel so as to permit the panel to adopt a relatively square edge, and the planar faces of the panel are released.

Abstract: The apparatus is intended for dispensing liquid from an inverted container having a neck through which the liquid is discharged, and includes a housing 31 provided with a mounting arrangement 32 for receiving and supporting the inverted container. A feed tube 34 is arranged to project into the neck of said liquid container to conduct liquid to a reservoir, and cover flaps 62 and 63 are biassed together by tension springs 69 and 70 to cover the feed tube 34 upon removal of the liquid container. The feed tube may alternatively be covered by a resilient diaphragm.

Abstract: A machine for ironing golf greens employs two large-diameter rollers on opposite sides. Both rollers are hydrostatically driven, and they pivot in opposite directions for steering of the machine; one of them also oscillates.

Abstract: A polyphase brushless DC motor has an integral automatic feedback arrangement affording excellent accuracy and a high degree of magnetic balance. The stator pole elements of the motor are identical and equidistantly spaced, and each is wound with two coils. One coil on each pole element comprises sensor circuitry; the other comprises power circuitry. As a result, all pole elements of the stator are utilized both to produce rotor drive torque and also to generate electrical signals that provide highly accurate rotor-position information.

Abstract: A device for controlling or limiting temperature in an electric cooking appliance includes a switch and a temperature sensor operatively coupled to the switch. The temperature sensor takes the form of a rod arranged substantially coaxially within a tube. The rod is made of a material having a first coefficient of thermal expansion and the tube is made of at least two tube portions, one of the tube portions being made from a material having a second coefficient of thermal expansion lower than the first coefficient of thermal expansion and another of the tube portions being made from a ceramic material having a third coefficient of thermal expansion intermediate the first and second coefficients of thermal expansion. The temperature controlling or limiting device may be incorporated into a radiant electric heater incorporating at least first and second heating elements defining separate heating areas for the cooking appliance.

Abstract: Thermal insulation for the piping of a sink or the like comprises an elongate tubular piece that is fabricated from a resiliently yieldable material and that has integrally formed, resiliently yieldable internal rib formations projecting into the passageway through which the piping extends. The rib formations enable more universal application to pipes of various sizes, while also affording better insulating and cushioning properties. Angle valve piping insulation includes a hinged cover component that is normally at least substantially closed, and that is readily displaceable to permit access into the internal body passage.

Abstract: A close wound coil is formed by a sequence of steps including supplying a wire to be formed into a coil onto a rotating mandrel by means of a guide wheel and urging the wire against the mandrel by means of a pressure wheel so as to form a coil. The formed coil is allowed to free itself from engagement with the mandrel from a point immediately following that at which the wire is urged against the mandrel by the pressure wheel to the end of the mandrel so that the formed coil, although carried by the mandrel, is unrestrained relative to the mandrel.