Abstract: A holder for dispensing stretch film from a roll comprises a cylindrical body and an arbor rotatably supported on the body. A flexible grip having internal ribs covers the body and the arbor, so that one can, by applying finger pressure to the grip, brake rotation of the arbor and thus control film tension.

Abstract: Both the wet strength and the folding endurance of bleached kraft paper product are improved by subjecting the paper to steps of densification and high temperature treatment during its production.

Abstract: Disclosed herein is a power tongs, including a rotary head and a circular plate loosely mounted on the head, with a flexible member secured at one end to the plate. The flexible member is wrapped around the pipe to be torqued and the free end of the member is tensioned around the pipe by means of a lever that is pivotally supported on the plate, the lever having an outwardly extending arm that is engaged by a pin extending upward from the rotary head as the tongs are operated. The flexible member distributes radial loads over the surface of the pipe to prevent crushing of the pipe and damage to its surface.

Abstract: Both the wet strength and the folding endurance of SCMP and sulfite paperboard are improved by subjecting the board to steps of densification and high temperature treatment during its production.

Abstract: An apparatus for correlating wallets with processing envelopes in photographic laboratories comprising:a dispenser (9) in which wallets (11) corresponding to the different customers are contained separately,means (5,7,8) for determining in accordance with the customer code read from the processing envelope (4), the extraction of a wallet (11) corresponding to that customer from the dispenser (9),means (13,14,15,16,17) for forming with the wallets (11) being extracted from said dispenser (9) a sequence corresponding to the sequence of processing envelopes (4) of that batch, andmeans for extracting one by one in the finishing station (21) the wallets (11) into which to insert the photographic material (28,29) corresponding to the processing envelopes (4) associated with said wallets (4).

Abstract: A maneuvering apparatus for lines such as cables or flexible conduits passing over a direction changing means and having thereon at least one rigid outer accessory with a diameter greater than that of the conduit or cable. The maneuvering apparatus is mounted adjacent the direction changing means, has a retainer and support for the accessory mounted on the conduit, and is moveable with respect to the direction changing means, so that the retainer follows a trajectory outside the direction changing means, from a first position in which the cable accessory is picked up by the retainer upstream from the direction changing means, to a second position in which the accessory is located downstream from the direction changing means and freed from the retainer.

Abstract: A power tong is disclosed having a pipe gripping device including plural jaws activated by independent expansible chamber linear motors. An air-driven hydraulic pump, whose output pressure is limited by an adjustable relief valve, supplies fluid to the jaw motors. The jaw force can thus be closely controlled, independent of tongs torque.

Abstract: A clamp for duplicating machines for lock keys comprising a pair of jaws (1,1',2,2') which are mounted on a threaded pin (4) rigid with a clamp support carriage (3), means for approaching said two jaws (1,1', 2,2') when clamping the key, and elastic means (8,6) interposed between said two jaws (1,1', 2,2') to keep them spaced apart. The clamp comprises, in a position misaligned with the line of action of the applied clamping force and at the opposite side with repect to the gripping faces of the jaws (1,1', 2,2'), a projecting portion causing, during the clamping stage, a moment opposite to the reaction moment caused by the clamped key.

Abstract: A single use, disposable kit receives, and retains, toiletries and a diaper for the care of a baby in a sanitary, tamper-proof fashion. The kit is executed in a thin plastic film that is folded over upon itself so that the toiletries and diaper are enveloped within the interior of the kit and are protected against degradation.

Abstract: A process for the selective extraction of arsenic from acid solutions containing other metals comprising treating the solutions with polyhydroxybenzene derivatives in organic diluent; mono- and di- alkyl derivatives containing at least four alkyl carbon atoms of pyrocatechol and pyrogallic acid are particularly contemplated for use in the removal of arsenic from strongly acid copper-containing electrolyte solutions.

Abstract: The articulation system relates to articulated tramway carriages comprising at least two bodies, the opposing ends of which are connected together in an articulated manner in order to maintain substantial continuity of the walking surface, and are supported by wheels at or adjacent to the articulation zone. In the articulation system, the end of each body is supported on its own axle provided with independent wheels, the opposing bodies and the relative axles being connected together by means of a drawbar, slidable connections and/or connecting rods to jointly form a bogie with a non-rigid frame. The axle is of double swanneck shape with uprights for connecting disc brakes on the outside of the wheels.

Abstract: The method for rendering wines sparkling is characterized by forming a dreg collection chamber inside the stopper, keeping said chamber in communication with the bottle interior during the dreg removal stage when the bottle is inverted or inclined, in order to enable the dregs to enter the stopper and, on termination of this stage or in any case before placing the bottle the right way up, interrupting communication between the dreg collection chamber and the bottle interior by acting from the outside, and so retaining said dregs in said chamber.To implement this method, the invention provides for the use of a plastic stopper characterized by comprising a first element which can be securely fitted to the bottle neck and contains an internal cavity, and a second element which is mobile relative to said first element in order, as a result of its movement, to open and close the dreg collection chamber provided in the interior of said second element and/or of said first element.

Abstract: A dental retention pin preferably made of metal is provided with a closed, cylindrical coating of bond assisting material, and an additional layer of a plastics filling material in order to obtain a physical-chemical or a purely chemical bond between the retention pin and the filling structure for obtaining a substantially increased retention power compared with known metal pins, which merely result in a mechanical or mechanical-physical joint to the filling structure. The retention force will be increased by shrinking the bond assisting layer or the outermost plastics layer onto said bond assisting layer around the pin so that the layer spans itself around the pin in a ring-like manner. Furthermore, examples for the structure of a retention pin are described, which improve the handling and insertion of such retention pins by the dentist considerably.

Abstract: A control system for power tongs comprises two tongs torque limiters, one of which limits tongs torque to a very low (hand-tight) level; the other limits torque at full make-up to, for example, 2000 ft.-lbs. The hand-tight torque limiter is manually or automatically disabled after the hand-tight level is reached. The system enables the operator to verify that the threads are properly engaged before applying full torque to the connection. The tongs have a very high reduction ratio, so that torque rises very slowly and can be more accurately controlled. The high torque limiter includes a normally closed shunt valve in series with an adjustable choke, the latter of which enables one to maintain a substantial, adjustable, residual torque on the pipe even after the shunt valve opens.

Abstract: The method for constructing microlens ends for optical fibres, particularly for biomedical and/or surgical use, is characterised by propagating in the optical fibre a radiation of the type used during the application of the fibre itself, and to which said fibre is transparent, and converting the wavelength of the radiation, outside to the fibre and in proximity to its output end, which has been previously cut along a plane orthogonal to its axis, into a band of wavelengths which can be absorbed by the fibre, for a time sufficient to cause localized fusion of the end.

Abstract: Estrogens characterized by an aromatic ring of the formula ##STR1## are halogenated by electrophilic substitution of a halo atom at the 1-position of the aromatic ring after protection of the sensitive 3-hydroxyl substituent and amination at the 4-position. Preferred starting materials include estrones or derivatives thereof. The estrones are preferably reduced after masking and amination to form the corresponding estradiols, which are then halogenated, deaminated and deprotected to provide the novel 1-haloestradiols.

Abstract: A carrying case for a cellular telephone unit which would facilitate the portability of the telephone. The carrying case is relatively compact in nature and the interior of the case is provided with a cover and a plurality of specially designed brackets to conceal and/or anchor the cellular telephone unit consisting primarily of a transceiver, a battery and battery charging circuit, and a handset.

Abstract: In a situation where animals, such as beavers, attempt to flood lands by blocking culverts or constructing dams across waterways, a device is used to maintain a constant flow of water through the dam or culvert. An elongated pipe or culvert with a downwardly directed opening distant from the culvert or dam is used. On the end of the pipe closest to the culvert is a gate which prevents animals and debris from passing through but allows for the smaller elongated pipe to communicate with the culvert. The beaver instinctively attempts to dam the gate area rather than dam the underwater opening of the elongated pipe, and thus is unsuccessful in stopping the flow of water.

Abstract: An implant for coxofemoral prosthesis comprises a slightly conical approximately straight tail that is to be engaged in the medullary cavity of the femur and a body carrying the lug or neck of a ball-and-socket joint, the body being connected to the tail by an upper part or head formed by at least one inclined projection intended to be applied against the surface of the femur cut after its resection at the level of the large trochanter. The implant is characterized in that the projection predominates over the anterior and posterior faces of the tail, and is greatly inclined from the side of the internal cortical wall to constitute a sliding shoe, allowing automatic placing of the implant on the inside the medullary canal.

Abstract: The reticular structure comprises a plurality of substantially rectilinear axis beams (1) having at least one lower bar (2) and at least one upper bar (2') having different length. Each of these beams (1) is articulated to the adjacent beams at the ends of the bar (2) having larger length and the link between the bars (2') having smaller length is obtained for interposition of an intermediate element (9) having a length to be prearranged according to the outline of the structure to be realized.