Abstract: An access door construction for a gas-fired water heater. The lower end of the outer jacket of the water heater is formed with an access opening and a door or panel bears against the outer surface of the jacket and encloses the opening. Tabs are formed on opposite side edges of the panel and engage the inner surface of the jacket adjacent the opening. In it unassembled condition, the panel is flat and when assembled with the cylindrical jacket, the resiliency of the panel will urge the tabs into tight engagement with the inner surface of the jacket. The panel is formed with a vertical channel having a generally semi-cylindrical cross section. By manually squeezing the sides of the channel together, the distance between the tabs will be decreased to thereby enable the panel to be removed and installed with the jacket.

Abstract: A packet communication system comprises a communication medium with two or more stations, each capable of transmitting and receiving packets of information. The system also has channel access means for providing sequential communication between stations; measuring means at each station for measuring the rate of flow of traffic on the communication medium; and control means, responsive to this measurement, for controlling the rate at which packets are admitted to the medium.

Abstract: A press tool comprising a bottom plate onto which there are mounted a die with radial grooves and a profiled ejector inserted into the die and circularly oriented in it so that the grooves of the die and the ejector coincide, and over them, by means of guiding columns and guiding sleeves, there are mounted a top plate with a rigid insert attached to its bottom side, a rest and a punch-holder with radial grooves, in which there are fastened prismatic punches and a central core, and underneath the punch-holder there is provided a punch-guide, fastened to the guiding columns by means of guiding sleeves.

Abstract: A stacker with a connecting conveyor for connecting the stacker with a conveying unit includes a roller rocker which is movably attached to the connecting conveyor and can be placed on the conveying unit or on a traveling vehicle. The roller rocker is placed on the conveying unit or the traveling vehicle in such a way that the connection permits three degrees of freedom.

Abstract: A fermentation unit comprising a scoop wheel equipped with scoops on the periphery thereof, and which moves between bunker silos. The bunker silos are equipped with aeration ducts at the base thereof. Flexible scrapers located around the periphery of the scoop wheel scrape the aeration ducts. Unstacking barbs are also located on the periphery of the scoop wheel. Means are provided to adapt the unit to the type of materials to be treated.

Abstract: A security device for movable objects such as a bicycle includes a lock box that is attached to the movable object, a locking chain that physically secures the lock box and movable object to an immovable object such as a bike rack, and an electric alarm circuit. The alarm circuit is armed by a lock switch that closes the lock box and is set off by severing of the cable, which is an integral part of the alarm circuit. Alternatively, the cable and lock box include an optical conduction path which is sensitive to tampering and difficult to bypass.

Abstract: A parallel drive for escalators or moving sidewalks is located within the region of reversal and inside the rotating step or pallet belt, the drive including with electric motor, gearing, step or pallet drive apparatus and handrail drive apparatus. The apparati are driven by the drive shafts of a drive unit comprising electric motor and planetary gearing arranged with their axes parallel to the axes of driven shafts of the step or pallet drive and the handrail drive.

Abstract: An improved anode mounting construction for a water heater. The inner surface of a steel water heater tank is coated with a corrosion resistent material, such as glass, and the tank is provided with an opening which receives an anode rod. The outer end of the anode is secured to a metal cap and the cap is carried by a steel spud which is welded to the outer surface of the tank bordering the opening. The internal diameter of the spud is greater than the diameter of the opening in the tank and a resislent sealing member or gasket is employed to seal the gap between the anode and the annular edge of the tank ordering the opening. The sealing member seals and protects the annular edge against corrosion, as well as protecting the spud, thereby eliminating accelerated consumption of the outer end of the anode adjacent the tank.

Abstract: The present invention concerns a rising sun magnetron comprising an anode ring having a series of radially inwardly-projecting teeth-like elements of a relatively high thermal coefficient of expansion. Each element (27) has a vane (21) of material of relatively low thermal coefficient of expansion secured on either side thereof so as to define alternate long and short cavities and an associated length of material (26) also of low coefficient of thermal expansion lying between the adjacent pair of vanes (21) and acting as a fulcrum for the associated vanes when the element (27) expands due to temperature rises.

Abstract: A beverage maker and serving unit system comprising a beverage maker and a portable beverage server. The beverage maker supports a brewing funnel over a platform on which the server sets when positioned to receive a stream of fresh brewed coffee or tea from the brewing funnel. When the system is designed for making iced tea the beverage maker will have a separate outlet for discharging diluting water into an opening in the server when the server is positioned all the way back on the platform. For support, the server has a set of front legs, a set of rear legs, and a set of intermediate legs all of which rest on the platform when the server is being filled. The server also has a lifting bail which cannot be fully raised until the server is filled and moved forward on the platform to where the intermediate legs engage upstanding detents on the front of the platform. When the server is setting back on the platform and being filled, the front legs engage the detents.

Abstract: A belt-type bucket elevator in which each bucket is connected to the belt by two movable fastenings arranged one behind the other in conveying direction. Each bucket is divided into front and rear bucket portions along a dividing plane extending between the fastening joints perpendicularly or approximately perpendicularly to the plane of the belt. The two bucket portions are connected to each other by connecting joints mounted coaxially on the side walls of the two bucket portions.

Abstract: The invention relates to a flow barrier in the annealing section of a glass tempering apparatus, said annealing section being provided with glass sheet supporting rollers (7) and cooling air blow boxes (1, 3) are disposed above and below a glass sheet, in addition to which there are, above the glass sheets, "false rolls" (8) in the form of a downward open trough, extending crosswise to the traveling direction of said glass sheets. The purpose of "false rolls" (8) is to increase a pressure applied to the top surface of a glass sheet in order to reduce the risk of a glass sheet becoming afloat. A flow along the trough, which increases towards the ends of the trough, results in a non-uniform tempering. The flow is cut off by fitting the trough with partitions (9) spaced from each other.

Abstract: An apparatus for vacuum peeling includes a frame to which is fixed a tank with a feeding bin. A vapor spiral is mounted in the tank and beneath the tank is mounted a receiver connected by pipelines to a vacuum pump and a vacuum chamber. Over the tank, a conveyor with endless chain is mounted to the frame and on the chain are mounted disks. The lower branch of the conveyor chain is wrapped by a perforated tube that is mounted in the tank. To this perforated tube, along its length, is fixed an operational tube comprising at least four of the disks in length. Beneath the operational tube, on the side of the feeding, is placed a strainer connected with a reservoir that is connected through a pump back to the tank. In the rear end of the operational tube is fixed the vacuum chamber. Over the strainer in the lower part of the operational tube are made openings while below the manifold of the vacuum chamber are perforated second openings.

Abstract: Beverage brewing funnel combination for supporting scrunchable disposable filters in either their non-scrunched full or normal capacity condition or in a scrunched reduced-capacity condition. The combination is formed by a funnel and a removable skeleton-like insert. The interior bottom surface of the funnel is inclined or dished toward a drain aperture and has a plurality of upstanding ribs which maintain a wet disposable filter out of adhering contact with the bottom surface when the funnel is used without the removable insert to support a disposable filter in its non-scrunched condition. When the insert is nested within the funnel it supports the disposable filters in their scrunched condition and preferably out of contact with the bottom surface of the funnel as well as the sidewall surface thereof.

Abstract: A new, lightweight reflective surgical drape which is effective in reducing the rate of heat loss in human patients during a variety of surgical procedures is disclosed. The drape comprises a core layer of non-conductive aluminum and a first and second adjacent layer of a thermoplastic material. A non-woven layer of absorbent material is attached to either the first or second adjacent layer of thermoplastic material.In a preferred embodiment, the drape of the present invention comprises a first layer of non-conductive aluminum and a second layer of a thermoplastic material. A third layer of non-woven absorbent material is attached to the first layer of non-conductive aluminum.

Abstract: A system for the formation of a bore hole, particularly for use in enhancing the recovery of oil from an oil bearing underground formation using an assembly including a driving fluid chamber, sealed from a driving fluid chamber, and a drill string terminating in a hydraulic drillhead which passes drilling fluid into the formation. Pressurized fluid from the drilling fluid chamber is applied against the drillhead to pull the drill string into the formation, while pressurized fluid from the drilling fluid chamber pushes the drill string forward from the rear. In a preferred embodiment, the forward end of the guide tube includes a whipstock through which the piston body turns from a vertical to a horizontal direction into the formation to provide a radial for the injection of steam.

Abstract: A mobile crusher installation having a supporting framework which receives at least one crusher and can be lifted and relocated, corresponding to the advance or the removal of material, by a transport mechanism, preferably walking legs or extendable track-laying or wheel carriages, and having at least one loading device associated with at least one crusher, which loading device has a receiving hopper for the loose material brought up by freely movable loading machines such as wheel loading machines or excavators, and a conveyor which feeds the loose material to a transfer hopper of the crusher, possibly with the interpositioning of a screening system. In order to increase the availability of the mobile crusher installation while at the same time retaining the optimum loading capacity of the loading machines, the loading device is mounted on the supporting framework swingable around a vertical axis.

Abstract: An ophthalmic aspirator-irrigator system for use during cataract surgery is disclosed. The system frees both hands of the surgeon for the surgical tasks and leaves the automatic operation of the system to a single control input operated by a foot pedal. The pedal controls both the aspiration and ejection functions as well as their respective speeds. The ophthalmic aspirator-irrigator system essentially comprises a hand-held device, a control box operable by the foot pedal and a power cord connecting the device with the box. A source of fluid is connected via a tube to the device to effect the irrigation function. The control box includes a power source and a circuit coupled to the source and via the cord to the device. Preferably, the circuit includes a bridge output network controlled by a linear motion slide type potentiometer controlled by the foot pedal.

Abstract: An arrangement for operating a diesel-hydraulic drive on a construction machine in limit-load control with a microprocessor controller in which the installed hydraulic power is greater than the rated output of the diesel engine. Upon thermal and/or diesel-engine overload the hydraulic power which can be taken off is reducible; in the case of non-output loading, after a selectably predetermined time the diesel engine can be switched to idling speed of rotation and hydraulic displacement pumps can be operated with minimum delivery oil quantity; and the adjustable hydraulic displacement pumps can be adjusted in accordance with selectably predeterminable output curves.

Abstract: An instrument support pedestal having a post pneumatically urged upwardly to counterbalance an instrument on the post, with the post slidably mounted in an elongated extrusion having vessels connected to the post pneumatics to form a large accumulator and another vessel serving as a high pressure reservoir so that the pneumatic force on the post can be varied.