baber/WOPTO huggingface dataset:
Patent GB-853975-A (GB)
Title: Improvements in or relating to the preparation of purified single elements or compounds
Inventor: HULME KENNETH FRASER
IPC: C30B13/00
Filed: 1957-12-31
Abstract: <PICT:0853975/III/1> Indium antimonide is purified by maintaining a molten mass of material in an evaporation chamber for a period to drive off volatile impurities which are collected on a cool part of the chamber, introducing an inert gas into the chamber to inhibit further evaporation and zone refining the mass in the presence of the inert gas.  The Figure shows an apparatus for preparing purified indium antimonide by the above method.  Indium and antimony are placed in a crucible 1 in proportions such that there is an excess of antimony over the stoichiometric ratio.  The crucible is positioned within a quartz tube 2, connected by a valve 6 to a vacuum pump, and is heated by strip heaters 10. Volatile impurities (e.g. zinc and cadmium) and some antimony are driven off and condensed on the top surface 12 of the tube 2 which is cooled by air from a multiple jet pipe 13.  After five hours heating the vacuum pump is disconnected, hydrogen is admitted to the tube 2 via the valve 5 and the trolley 7 carrying the heaters 10 is moved to and fro to zone refine the indium antimonide.
Patent GB-1339595-A (GB)
Title: Circuit arrangements for demodulating phase-modulated data signals
IPC: H04L27/227
Filed: 1971-08-31
Abstract: 1339595 Demodulating differential phase modulated signals SIEMENS AG 31 Aug 1971 [31 Aug 1970] 40503/71 Heading H4P A circuit for demodulating a differential phase modulated carrier wave comprises a reference oscillator RO for providing out of phase reference signals, a pulse generator TG for providing a scanning pulse during each phase modulated portion of the carrier wave, a first store K1, K2 which, at the occurrence of a zero transition in the carrier wave during the time of a scanning pulse, stores the existing states of the out of phase reference signals, a second store K3, K4 to which prior to the next scanning pulse the value in the first store is transferred, a decoder D.C. which forms the difference in the values present in the stores and a parallel to series converter K5, K6 the output of which supplies the coded modulating data. The carrier wave, portions of which are phase shifted by amounts each of which represents one of four dibits, is fed to a terminal E and a limiter BV. A divider FT reduces the frequency of the oscillator RO and provides the four out of phase reference signals on leads e-h at the frequency  of the carrier wave. The pulse generator TG supplies a pulse on lead l shortly before a scanning pulse so that the reference signal states in the store K1, K2 are transferred to the store K3, K4, the store K1, K2 then being vacant to receive the reference signal states existing when the next phase modulated portion of the carrier wave is analysed during the next scanning pulse. The decoder forms the difference in the two stored values and after conversion by the circuit K5, K6 the dibits used as the modulating data are fed to a terminal A.
Patent GB-1285506-A (GB)
Title: Improvements in or relating to apparatus for loading bobbins into receptacles
IPC: B65H67/06
Filed: 1970-08-24
Abstract: 1285506 Packaging bobbins MAREMONT CORP. 24 Aug 1970 [9 Oct 1969] 40631/70 Heading B8C In apparatus for bottom loading bobbins B<SP>1</SP> into a receptacle 20 mounted on a movable platform 18 and comprising an elevating device 22<SP>1</SP> for raising a bobbin through an opening 24<SP>1</SP> in the platform 18, the operation of the elevating device 22<SP>1</SP> is automatically terminated in the event of abnormal feed of the bobbins. The elevating device 22<SP>1</SP> is driven by an electric motor 26 via a clutch 28<SP>1</SP>, the bobbins being fed to the device 221 on an endless belt 32<SP>1</SP> driven by an electric motor 34 via a clutch 35<SP>1</SP>. One edge of the platform 18 is connected to a fixed frame 12 for pivoting and vertical translation. When the platform is moved upwardly by bobbins jamming on the elevating device 22<SP>1</SP> it activates a switch 60<SP>1</SP> to de-energize the motors 26, 34 and disengages the clutches 28<SP>1</SP>, 35<SP>1</SP>. Photo-electric detectors 62<SP>1</SP>, 64<SP>1</SP> adjacent the belt 32<SP>1</SP> are operative to disengage the clutches 28<SP>1</SP>, 35<SP>1</SP> in the event of blockage on the belt 32<SP>1</SP>. Further bobbins are fed on a second belt 32 to a second lifting device 22 which lifts them into a second container, the belt 32 and the elevating device 22 being driven by the motors 34, 36 via clutches 35, 28, and the operation of these being controlled by a photo-electric detector 62, 64 and a switch 60 as described above.
Patent GB-974331-A (GB)
Title: Improvements in or relating to pipe coupling members
Inventor: JOHNSON DEREK BRIEN
IPC: F16L43/00
Filed: 1959-11-30
Abstract: 974,331. Junction pieces; pipe joints. BUNN & JOHNSON Ltd. Feb. 28, 1960 [Nov. 30, 1959], No. 40671/59. Heading F2G. A pipe coupling member comprises a pipe 1 of malleable cast iron curved so that the axes of the ends thereof make an angle with each other, an integral socket 2 formed at one end of the pipe having an internally flared mouth 5 adapted to accommodate a deformable sealing ring and a portion 7 of the other end of the pipe being formed of greater wall thickness than but of the same internal diameter as the remainder of the pipe. An annular rib 4 is formed within the socket to define a short cylindrical passage 3 coaxial with and contiguous to the flared mouth of the socket and has a diameter slightly greater than that of the exterior portion 7, the diameter of the internal surface of the remainder of the socket being greater than that of the passage 3; a screw-thread 6 is formed on the exterior of the socket for engagement by a coupling nut.
Patent GB-960483-A (GB)
Title: Improvements in or relating to scaffolding
IPC: E04G1/28
Filed: 1962-10-02
Abstract: 960,483. Scaffolding. H. C. WINSKELL. Oct. 2, 1962, No. 40671/61. Heading E1S. Scaffold planks 8 are supported at each end on a right-angled triangular frame 5 which rests against a wall and is held in position by a pole 6 pivoted at the right-angled corner of the frame and passing through a slot 9 in the side forming the hypotenuse, a safety rail 14 being supported on poles 12 passing through holes in the frames and resting on the poles 6. The pole 6 is in sections or telescopically adjustable. The planks 8 are held in position by channels 13 on the frames.
Patent GB-991871-A (GB)
Title: Improvements in or relating to conveying apparatus
Inventor: CRUMP JOHN PATRICK
IPC: B66F9/14
Filed: 1962-10-29
Abstract: 991,871. Endless conveyers on masked lift trucks. PETMAR INDUSTRIES Ltd. Oct. 21, 1963 [Oct. 29, 1962], No. 40753/62. Headings B8A and B8H. A fork lift truck 1 comprises an upright guide mast 2, a carriage 8 vertically movable thereon and supporting a transverse conveyer incorporating an endless chain 14 with at least one pusher 16 and a plurality of rollers 12. The mast 2 comprises an upper frame 3 telescopically movable relative to a. lower frame 4 by a hydraulic ram 5, and is adjustably held in the vertical position by a pair of links 7, Fig. 2 (not shown). The carriage 8 is vertically slidable on the upper frame 3. A chain 9 attached to the carriage passes over a sprocket 10 at the top of the mast 2 and has its end attached to the lower frame 4. A framework 11 transversely mounted on the carriage 8 incorporates the conveyer which comprises two rows of rollers 12 between which runs the endless pusher chain 14 having its upper and lower runs supported in channel members and driven around sprockets 15 by a variable-speed hydraulic motor 19. A load 20 on a pallet 21 is moved on to and off the rollers 12 by engagement of the pusher lug 16 with the pallet 21. The controls for the motor 19 and ram 5 are placed readily to hand of the driver of the truck 1. The conveyer chain 14 and the upper frame 3 may be operated electrically. The conveyer frame 11 may be tiltable or movable endwise.
Patent GB-1446472-A (GB)
Title: Smoke filter
IPC: A24D3/04
Filed: 1973-08-30
Abstract: 1446472 Smoke filters A A FAHIR 30 Aug 1973 [4 Sept 1972] 40975/73 Heading A2C A smoke filter adapted for use with a smoking article comprises means defining a smoke passageway which includes at least one filter plug and a cell for conditioning the smoke in a combination providing at least two different degrees of filtration, the cell having at least one smoke passage the cross-section of which may be varied and regulated at the control of the user to provide adjustment of the degree of filtration. As shown in Figs. 1 and 2 filter plugs 5, 6 are separated by cell 7 the deformable walls of which can be used to regulate the cross section and degree of filtration e.g. by twisting. Filter plugs 5, 6 may be constituted in known manner by a ring 13 of plastic or cardboard and filled with a fibrous material 14 e.g. cellulose acetate. The walls of cell 7 may be made from suitable metal coated paper and an air hole may permit observation of the filtration process. Fig. 6 illustrates how wires 18 defining reinforcing ribs may permit coloured regenerated cellulose sheaths to remain separate and distinct from the extension wrapper.
Patent GB-1172340-A (GB)
Title: Pressure Vessel
IPC: B01J3/00
Filed: 1968-08-28
Abstract: 1,172,340. Pressure vessel doors. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 28 Aug., 1968 [30 Aug., 1967], No. 41064/68. Heading F2P. A pressure vessel 1 includes a cover 2 arranged to open outwards, a ring gasket 3, a safety closing means 5-10 adapted to hold the cover 3 over an opening in the pressure vessel, and an expandable intermediate element 16, Fig. 3, provided between the ring gasket 3 and the cover or an element 4, 11-13, Fig. 1, provided between the ring gasket 3 and the pressure vessel 1 which intermediate element 16 or 4, 11-13 is connected at one end in a leakproof manner to the cover 3 or to the pressure vessel respectively and at the other end being adapted to seal against the ring gasket under pressure within the vessel, the area of the largest cross-section through the intermediate element perpendicular to the centre line thereof being greater than the cross-sectional area enclosed within the inner periphery of the ring gasket. As shown in Figs. 1 and 3 the cover 2 is forced downwards by a block 7 and a lever 5 pivoted at 6 to a fixed structural part and urged downwards at its other end by a screw 8 and tie rod 9 the desired tightening force being adjusted by the screw 8. The intermediate member, Fig. 1, comprises a metal ring 4 provided with a groove to receive the gasket 3, a flat collar 11, a bellows 12, and a flange 13, which has a leakproof connection with the pressure vessel, the intermediate member 16, Fig. 3, comprising a bellows 16 which is sealed to the closure at its upper end and has a lower reinforcing ring which seats upon the ring gasket 3. In a modification, Fig. 2, not shown, the bellows (14), which consists of a single expandable section, is attached directly to the ring (4) at its upper end. In a further modification, the safety closure arrangement is applied to a branch pipe fitted to a pipe-line containing medium under pressure.
Patent GB-1134268-A (GB)
Title: Polyurethane elastomer compositions and process for producing the same
IPC: C08G18/10
Filed: 1966-09-15
Abstract: 1,134,268. Stabilizing polyurethane elastomers. KURASHIKI RAYON K.K. 15 Sept., 1966 [15 Sept., 1965], No. 41201/66. Heading C3R. Polyurethane elastomers derived from a hydroxyl-terminated polyester glycol of M.W. more than 500, a diisocyanate and a low M.W. diol as chain extender are stabilized against yellowing by blending therewith 0À01 to 10% by weight based on the weight of the elastomer of at least one of the following compounds: wherein m is an integer of 1 to 5 and n is an integer of 6 to 30. Numerous polyesters, diisocyanates, diols and stabilizers are listed. Examples describe the stabilization of polyurethanes derived from (1) a polyethylene propylene adipate, 4,4<SP>1</SP>-diphenylmethane diisocyanate and ethylene glycol and (2) a polypropylene adipate, 4,4<SP>1</SP>-diphenylmethane diisocyanate and ethylene glycol with #-(laurylthio)- ethyl alcohol and a mixture of distearylthio dipropionate and dioctylthio dipropionate respectively.
Patent GB-1076523-A (GB)
Title: Hydraulic torque
IPC: F16H43/00
Filed: 1964-10-09
Abstract: 1,076,523. Rotary motors and pumps. BETEILIGUNGS-UND PATENTVERWALTUNGS G. m. b. H. Oct. 9, 1964 [Oct. 11, 1963], No.41334/64. Heading F1F. A machine for converting reciprocating motion into rotary motion (or vice versa) comprises pistons reciprocable in cylinders (23), (24), Fig. 1 (not shown) of an 1. C. engine connected to plungers (25), (26), reciprocable in cylinders (27), (28) which are connected to a rotary axiallysliding vane motor comprising a hub (3), Fig. 2 (not shown) splined to an output shaft (1) and connected to end discs (4), (5) having sinusoidal inner profiles (7), (8) co-operable with vanes (10) axially-slidable in grooves in a stationary housing (9). The vanes 10, Fig. 4, are formed with recesses 33, 36, 34, 35 co-operable in overlapping relationship with recesses 39, 42, 40, 41 respectively in the housing 9 connected by passages 43, 46, 44, 45 with working chambers 18, 17, 15, 16 of the motor. With chambers 15, 18 the pressure chambers and chambers 16, 17 being exhausted, the vane 10 tends to tilt in its groove under the action of forces P o , which forces if unbalanced produce considerable reaction forces A o . The pressure in chambers 15, 18 however being transmitted through passages 44, 43 to recesses 40, 39 produces forces E o , the moment of which substantially balances the moment of the forces Po in all positions of the vane to eliminate tilting of the vanes and reduce wear and friction forces. Instead of passages 43, 44, 45, 46 in the housing, cross-over passages may be provided in the vanes.
Patent GB-934100-A (GB)
Title: Cleaning process
IPC: C23G1/00
Filed: 1959-12-07
Abstract: Surfaces are cleaned by suspending them above a cleaning solution having a temperature in the range 20-100 DEG  C., contact with the liquid phase being avoided, and blowing finely-dispersed air through the solution from the bottom, whereby a foam phase is formed which flows round the said surfaces and cleans them.  Acid, alkaline or neutral solution may be used, and may contain either soaps or anionic wetting agents such as alkyl sulphonates, alkyl-benzene sulphonates, or fatty acid sulphonates, or may contain non-ionic wetting agents such as the reaction products of fatty acids, amides or alcohols with ethylene oxide or propylene oxide.  Cationic wetting agents may also be employed, and compounds such as sodium metasilicate, water-glass, caustic soda, orthophosphates, other phosphates and soda may also be present.
Patent GB-1522878-A (GB)
Title: Block copolymers
Inventor: RADICI PIERINO
IPC: C08G63/664
Filed: 1976-10-06
Abstract: 1522878 Lactone/oxymethylene block copolymers SOC ITALIANA RESINE SIR SpA 6 Oct 1976 [30 Oct 1975] 41559/76 Headings C3P and C3R Block copolymers of the structure A-B have A representing a polylactone block which comprises recurring units derived from one or more lactone monomers of the formula wherein PM is a C2-C13 polymethylene chain optionally substituted by one or more (cyclo)- aliphatic or aromatic hydrocarbyl radicals, and B representing a polyoxymethylene block, blocks A and B being present in proportions of at least 0À1% and at least 2% by weight, respectively. The block copolymers are suitably prepared by polymerizing formaldehyde in the presence of a purified polymer A and in the absence of a chain transfer agent, whereby the product is substantially free of formaldehyde homopolymer. Specification 1,522,879 is referred to.
Patent GB-1358765-A (GB)
Title: Fluid flow control device in particular for an oil valve
IPC: F23N5/20
Filed: 1971-09-07
Abstract: 1358765 Controls for burners CONTROLS CO OF AMERICA 7 Sept 1971 [15 Sept 1970] 41561/71 Heading F4T [Also in Division F2] A fuel valve 5 is controlled by a first thermal actuator 11 to prevent the valve rising above a low flow position, a second similar actuator 12 to allow the valve to rise towards a high flow position, and a thermostatic actuator 14 to adjust the valve between the two positions in accordance with ambient temperature. Each of the actuators 11, 12 consists of a rod of high thermal expansion metal heated by an electric heater, the rod 11 being connected by a simple lever 17 to a spring-loaded stop 21 to limit upward movement of the valve 5 and the rod 12 by a compound lever system 26 to an arm 26b to determine the maximum flow position. The actuator 14 is connected by capillary tubing 15a to a liquid-filled sensing bulb 15 and operates the valve through a lever 36, a spring-mounted probe 37 and a further lever 6. The lever 36 is also arranged to operate a switch S1 through a pair of levers 55 and 56. When the control is switched on, resistors R1 and R2 energize the rods 11 and 12 and an igniter I lights the burner which is provided with a bi-metallic flame sensor switch SB. Fuel flow is thus maintained at a low value until the switch SB opens to deenergize the rod 11 and allow the valve 5 to rise to a position determined by the thermostat. The rod 12 determining the maximum opening of the valve remains energized through a switch S2 which is closed when the rod 12 expands. Once the desired temperature has been reached, the thermostat opens the switch S1 and the control is closed down until both the flame sensor and thermostat switches SB and S1 are again closed. The control can also be closed down by turning a knob 46, for setting the thermostat to zero. To prevent an electrical supply failure from closing the valve, a manual lever 30 is used to latch the lever 26 in a raised position, the latch being released automatically when the supply is resumed.
Patent GB-1510808-A (GB)
Title: Caisson
IPC: E02D23/02
Filed: 1975-10-10
Abstract: 1510808 Caissons OFFSHORE CONCRETE BV 10 Oct 1975 [11 Oct 1974] 41672/75 Heading E1H To facilitate manufacture, a caisson body 3 is built separately from a skirt structure 5, 6 and subsequently the two are connected together before being sunk onto a water bed with the skirt penetrating into the ground. To connect the two parts together, either the skirt structure 5, 6 is suspended below the caisson body 3 and then raised into contact with it, or it has a buoyancy tank which is initially flooded to position it below the caisson body 3 and then emptied. The skirt structure 5, 6 may be connected to the caisson body 3 as shown in Fig. 4 by means of a hose 11 filled with settable grouting. The skirt structure may be built up from identical sub elements (Fig. 5 not shown) a frame a wall and grating for supporting the bottom of the caisson body.
Patent GB-1269086-A (GB)
Title: Blanking and black-level control-arrangement for video signals
IPC: H04N5/18
Filed: 1969-08-25
Abstract: 1,269,086. Television. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 25 Aug., 1969 [27 Aug., 1968], No. 42148/69. Heading H4F. A system for producing a noise-free blacklevel signal during the blanking interval of a video signal from a source 10 such as a camera tube comprises a black-level current source 15, an amplifier 13, a capacitor 14, and a doublepole change-over switch 12 which is in the position shown during the line scan interval. During the blanking interval switch 12 changes over under control of a driver 16 and the camera current i 1  which contains noise and spurious impulses superimposed on the blacklevel is applied to amplifier 13. The capacitor 14 removes the noise and spurious components and an adjustable black-level control current i 3  is added to produce a current i 4  which is directed to the output 11. During the scan interval the camera current i 1  is directed to the output 11 and the current i 4  is applied as the input current i 2  to the amplifier 13. The gain of the amplifier 13 may be adjusted to provide a desired proportion of the camera black-level current in the black-level output signal. A transistorized circuit, Fig. 2 (not shown), is described in which switch 12 comprises four transistors (25 to 28), capacitor 14 is divided into two parts (45, 46) arranged before two sections (30, 31) into which amplifier 13 is divided, and a preamplifier is inserted between the camera tube and the switch 12.
Patent GB-1211368-A (GB)
Title: System for producing a repetitive current waveform
IPC: H04N3/223
Filed: 1967-10-05
Abstract: 1,211,368. Current-waveform generators; cathode-ray tube circuits. HEWLETT-PACKARD CO. 5 Oct., 1967 [5 Oct., 1966], No. 42259/67. Headings H3T and H4T. A circuit of the resonant return or similar type for generating a current waveform in an inductive load has a waveform corrector circuit connected to the other end of the load from the driver switch, the corrector being controlled by the difference between a reference signal and a signal representing the waveform being generated. Fig. 5 shows a resonant return type of line time-base generator in which 20 is the driver, 22 is the efficiency diode, L, R is the deflection coil and in which a waveform correcting amplifier 40 is connected in series with the coil and the supply -E. A voltage proportional to the rate of change of current is induced in winding 36 and any departure of this from a constant or shaped reference voltage derived from a resistor 38 is used to control the correction amplifier. A diode 44 isolates winding 36 from earth during the fly-back. Fig. 7 shows a more detailed circuit in which 10 is the deflection coil, 20 and 22 the driver and efficiency diode, 8 is the supply and reference voltage source, 36 is the feedback winding and 40 the waveform connecting amplifier. The voltage supply and reference voltage source is in the form of an emitter follower and reservoir capacitor 12, the voltage being variable to vary the sweep amplitude, by means of a potentiometer 130. The impedance at the output of the emitter follower is inductive at low frequencies but becomes capacitive well below the repetition frequency and this impedance, together with that of the reservoir capacitance, resonates with the deflection coils during the scan to provide a short section sine wave component across the reservoir capacitor whereby the deflection current is shaped to correct for flat-faced tubes. The correction amplifier has class B output transistors 76, 78 which do not conduct during the quiescent state but driver transistors 72, 74 which in this state do provide output current, but-off bias is provided by diode 110 during the first part of the flyback but during the remainder the input transistor is driven to saturation. Auto-transformer coupling to its deflection coils may alternatively be provided (Fig. 15, not shown). Diode 44 produces a step in the voltage across the deflection coil at the middle of the fly-back to increase the current swing and thus compensate for resistance loss. Centring is effected by current passed from the -6V supply through a variable centring resistor 62 and a high impedance choke 114 to a small resistor 116. Diodes 63, 64 normally carry current and compensate for temperature changes in transistor 69 and diode 44. In Fig. 15 (not shown) a complementary transistor stage provides the centring current.