baber/WOPTO huggingface dataset:
Patent GB-1398170-A (GB)
Title: Communication switching systems
IPC: H04M19/02
Filed: 1972-08-31
Abstract: 1398170 Automatic exchange systems WESTERN ELECTRIC CO Inc 31 Aug 1972 [1 Sept 1971] 40378/72 Heading H4K In a ringing arrangement, the A.C. ringing current is interrupted for a short predetermined period in each cycle during which period the subscriber's line is tested for the off-hook condition. The arrangement is described as applied to a system in which the ringing current is applied directly to the subscriber line circuit and not via the switching network, this being necessitated by the use of solid state cross-points in the switching network. As shown in Fig. 1, a ringing current generator 140 supplies a 2 second ringing signal of frequency 20 Hz and amplitude 86 V. to contacts 123, 124 of the subscriber line circuit constituted by relays 120 and 130, the 2 second ringing periods being separated by 4 second periods of silence. Fig. 2a shows the form of the current supplied during the ringing period, there being t1-t2 t1 1 -t2 1 , &c., during consecutive cycles, in which the ringing is interrupted. During the periods in each cycle of the ringing current and during the 4 second periods between ringing periods a relay 120 in the line circuit is operated by the exchange central control 150 over a line 125 to disconnect the ringing generator 140 from the subscriber line R103, T104 and to connect thereacross an off-hook detection relay 130. The relay 130 is used both as the off-hook detection device and as a ring trip device and merely completes a line 135 which enables a known line finder arrangement to determine that a particular subscriber has gone off-hook, the central control 150 determining whether it is due to new call of is in response to the line being called. Relay 120 may be replaced by two relays and instead of the generator 140 being disconnected from the subscriber's line during the periods in the ringing, the relay 130 may be connected across the line in addition to the generator 140, the generator 140 only being disconnected when an off-hook has been, detected. Ringing current generator 140.-To produce the ringing waveform A the signal output from sine wave generator 141 is modified by the arrangement of diode 142 and PNPN transistor (thyristor) 143. On negative half cycles the diode 142 is conductive and passes the complete negative waveform. During positive half cycles however thyristor 143 only conducts once its trigger electrode has reached a threshold, thereby producing the periods t1-t2 &c. A phase shift circuit comprising resistors 144, 146, 147 and capacitor 145 controls the length of the periods. To enable the operation of relay 120 by central control to be synchronized with the periods in the ringing current a timing signal is derived from sine wave generator 141 by a network including varistor 149 capacitor 148<SP>1</SP> and resistor 149<SP>1</SP>.
Patent GB-1086468-A (GB)
Title: Process for decomposing of fluoroacetone-hydrogen halide complexes
IPC: C07C45/85
Filed: 1965-09-23
Abstract: Fluoroacetones are made by dehydrohalogenating hydrogen halide-fluoroacetone complexes by contacting the complex with sulphur trioxide at temperatures above 0 DEG  C.  The complexes may be those obtained as byproducts in the preparation of fluoroacetones from hexachloro-acetone and hydrogen fluoride and include alcohols and ethers, e.g. hexafluoro-2 - chloro - iso - propanol, heptafluoroisopropanol, 1-chloro-hexafluoroisopropanol and 2-(1 - chlorohexafluoro - isopropoxy) - 1 - chloropentafluoroisopropanol. The dehydrohalogenation can be effected in the vapour or liquid phase. The resulting ketones are separated from the byproduct halosulphonic acids by distillation. Examples relate to the preparation of hexafluoroacetone, monochloropentafluoroacetone and dichlorotetrafluoroacetone from the complexes specified above.
Patent GB-1427637-A (GB)
Title: Internal combustion engine having an exhaust reactor and a protective device for the reactor
IPC: F01N13/02
Filed: 1973-08-29
Abstract: 1427637 Cutting out IC engine cylinders ROBERT BOSCH GmbH 29 Aug 1973 [30 Aug 1972 18 April 1973 10 Aug 1973] 40662/73 Heading F1B An I.C. engine includes a protective device for thermal and/or catalytic reactors 21, 22 in its exhaust system 20, the device comprising at least one sensor 26-29 to respond directly or indirectly to operating conditions in a cylinder or group of cylinders and means 25 responsive to the sensors to shut-off fuel or fuel/air mixture to a cylinder or group of cylinders when combustion conditions would otherwise cause an inadmissible temperature to be reached in the exhaust system. When either of sensors 23, 24 senses a reactor temperature higher than a predetermined value, the control device 25 produces a signal to open one of the switches 16-19 to cut off fuel supplied to whichever intake pipe 3-6 corresponds with the cylinder or outlet pipe 30-33 at which the lowest temperature is detected by sensors 26-29. Normally open, which, when closed, short circuit the winding of one of the injection valves 7-10 may replace the normally closed switches 16-19. Semi-conductor switches may be used instead of mechanical ones. The temperature sensors 26-29 may be located in the cylinder head or pressure sensors may be provided for each cylinder to determine whether combustion has taken place. Alternatively, the ignition current can be detected. Instead of controlling fuel supply to injection valves 7-10, control flaps may be located in intake pipes 3-6, that flap being closed by the device 25 which is in the pipe leading to the malfunctioning cylinder. A valve admits air when the flap is closed to avoid high cylinder vacuum causing loss of power. For an engine with multiple carburetters, the fuel supply to the float chamber or the mixture supply to a cylinder or group of cylinders may be interrupted. When the engine is driven by the vehicle to which it is fitted, the fuel is shut-off only after a time delay determined by operation of a bi-metal relay. Fuel supply is resumed when the engine speed falls below a pre-set value. A deactuation temperature sensor 40 prevents the device 25 from operating below a predetermined minimum temperature to allow normal starting of the engine. The sensor or sensors 40 may be in, on or in the vicinity of the engine or in its exhaust system or in more than one of these places. Alternatively one or more of sensors 23, 24, 26- 29 or sensors in the engine oil, cooling water or cooling air may be used. A delay switching device 44 may be provided which is actuated simultaneously with starter motor 43 and, for a predetermined time, prevents the device 25 from interrupting fuel supply. The fuel supply shut-off may operate only for a fixed time and then fuel supply is resumed until further misfiring occurs. This may be effected by monostable trigger stages 50-53, which cause switches 16-19 to be opened until the trigger stage returns to its stable state.
Patent GB-1480113-A (GB)
Title: Devices for the protection and presentation of documents and the like
IPC: B42F7/02
Filed: 1974-09-18
Abstract: 1480113 Document and like mounts FODINAX SA 18 Sept 1974 [20 Sept 1973 9 Oct 1973 40720/74 Headings A4H A4U and A4X A device for the presentation and/or protection of documents and the like, including masks, sculptures or models, comprises sheets 1 and 2 at least one of which is resilient, the sheet 1 providing a base for the document or the like and the sheet 2 having folded border parts 3, the distance #' between the folds being less than the corresponding dimension 1 of sheet 1 whereby the sheets remain releasably inter engaged by frictional engagement between the corresponding border parts of the sheets. The sheets are preferably made of plastics material but other materials referred to are glass, metal, wood, laminated panel, cardboard, reinforced paper, rubber and cork, and the sheet 1 has folded border parts 4 corresponding to the parts 3 of the sheet 2. The lower edges of the sheets 1 and 2 may also have folded border parts, and projections (14) and (16) on the border parts of one of the sheets may be provided for engagement in depressions or apertures in the other, Figs. 4 and 5 (not shown). The sheets may be transparent,or coloured to protect the document or the like from light, and they may be supported on a horizontal or oblique support or suspended by being hooked to a wall or rods. A suspension cord may be passed through holes in the device, or apertured members (5) provided on the device, Figs. 2 and 3 (not shown), or a suspension cord may extend under an upper folded border part or this may have holes for the cord which may also pass through aligned holes in a bottom folded border part. In another embodiment, Fig. 6, 7 and 8 (not shown), only one of the sheets has folded border parts which are directed inwardly. In a further embodiment, Figs. 9 and 10 (not shown), folded border parts on one sheet engages slots in the other sheet. A bottom folded border part may support the device on a desk, Fig. 11 (not shown), or it may be supported by a spring-loaded back leg, Fig. 12 (not shown).
Patent GB-1470429-A (GB)
Title: Press for shaping drawn metal hollow bodies
IPC: B21D24/16
Filed: 1974-09-18
Abstract: 1470429 Cupping KM-ENG AG 18 Sept 1974 [19 Sept 1973] 40754/74 Heading B3Q A press for shaping a drawn hollow body 1 having a flared edge 1a relative to an ironing die 7 and draw punch 21 comprises at least two centering cheeks 23a, 23b as shown, which are slidable towards and away from the tool axis 3, embrace a hollow body 1 being thrust into the die 7 by the punch 21 over at least a portion of its height and are caused by a mechanical connection between them and the punch 21 to withdraw from the hollow body by the radial dimension of the flare at the latest shortly before the flared edge reaches them. The cheeks 23a, 23b are biased towards the axis 3 by springs 37. Cams 27 carried by rods 28 extend through holes 26 in the cheeks, bevelled faces 27a on the cams engaging complementary faces 25 on the cheeks. The rods are connected to a bar 33. A lower portion 13 of a main ejector 12 has a piston plate 14 at its lower end to which compressed air is continuously supplied. An auxiliary ejector 17 including magnet 17b is loaded by a spring 18<SP>1</SP>. In operation, a feed gripper (2), Fig. 1a, not shown, is withdrawn when the punch 21 has entered the body 1 and the cheeks engage the body to centre it before it engages the drawing edge of the die 7. Downward movement of the punch forces the ejector 17 and then the ejector 12 downwards against the pressure exerted on the piston plate 14 until the lower portion 11 of the ejector 12 engages the cross-bar 33 and forces down the rods 28. The arrangement is such that the cheeks are cammed outwardly shortly before the flange 1a reaches them. The cheeks run in ball bearings (32), Fig. 1b (not shown),
Patent GB-1488131-A (GB)
Title: Method and device for the continuous automatic analysis of the"filterability point"of liquid substances particularly diesel oil
IPC: G01N25/04
Filed: 1974-09-19
Abstract: 1488131 Determining crystallisation temperature; measuring filterability ANTAR PETROLES DE L'ATLANTIQUE 19 Sept 1974 [19 Sept 1973] 40864/74 Headings G1D and G1S An apparatus for the continuous automatic determination of the filterability point of a liquid comprises:- (a) a liquid flow-path having an inlet and an outlet, (b) means to pass liquid through the flow-path at a constant flow-rate. (c) cooling means sufficient to reduce the temperature of said flow-path so that the pressure difference across said inlet and outlet reaches a first value corresponding to a first characteristic temperature, (d) means to measure the liquid pressure difference between said inlet and outlet, (e) liquid heating means in said circuit, to modify the temperature of the liquid as provided by said temperature cooling means, (f) means to switch on said liquid heating means when the pressure difference reaches said first value, (g) means to switch off said liquid heating means when the pressure difference reaches a second value which corresponds to a second characteristic temperature, and (h) means for continuously recording the temperature of the liquid in the flow-path; said first characteristic temperature corresponding to the filterability point and said second characteristic temperature being above said filterability point. A suitable apparatus is shown in Fig. 3 and comprises a housing 18 containing a cooling bath 14, cooling coil 15 and chamber 13. Liquid to be analyzed is pumped by 12 through chamber 13, which chamber contains filter 20. A thermosensitive element 21 registers the temperature of the liquid. A heating element 23 is connected to a differential pressure responsive means which itself is connected to the delivery side of the pump and outlet of chamber. An alternative form of apparatus is shown in Fig. 7 in which liquid to be analyzed flows through a metallic capillary tube 130, which tube is connected to electrical supply means and thus functions as a heating element. Temperature recording device 122 and differential pressure responsive means 125 are provided.
Patent GB-1424057-A (GB)
Title: Permselective membrane assembly
IPC: C08G18/36
Filed: 1973-08-30
Abstract: 1424057 Reverse osmosis DOW CHEMICAL CO 30 Aug 1973 [31 Aug 1972] 40961/73 Heading B1X A permselective membrane assembly comprises a multiplicity of continuously hollow fibre segments the ends of which segments terminate in the face of at least one resinous tube sheet comprising the non-catalysed reaction product of an isocyanate terminated prepolymer with castor oil or a derivative thereof having a higher functionality. The assemblies are suitable for reverse osmosis.
Patent GB-1507244-A (GB)
Title: Wheel chairs
IPC: A61G5/04
Filed: 1976-10-04
Abstract: 1507244 Toothed gearing VESSA Ltd 4 Oct 1976 41039/76 Addition to 1414091 Heading F2Q [Also in Division B7] A wheel drive unit, particularly for a wheel chair, includes a mounting plate 1 carrying an electric motor having an output shaft 3 and gears 4, 5 for driving the hub 7 wherein gear 5 is movable to disengage from gear and disconnect the drive by a fork 15 and manual lever 11. The hub carries a key 6 over which gear 5 slides, this gear being normally biased by spring 8, to effect drive connection and disconnection. The lever 11 is pivoted at 10 in a slot 9 in the plate 1; fork 15 is pivoted at 16 and is normally biased by spring 17, a shallow groove 18 being provided for engagement with the lever end 13.
Patent GB-1512608-A (GB)
Title: Metal-air cells
IPC: H01M2/02
Filed: 1976-10-05
Abstract: 1512608 Metal air cells UNICAN ELECTROCHEMICAL PRODUCTS Ltd 5 Oct 1976 [6 Oct 1975] 41211/76 Heading H1B A metal-air (e.g. 2n-air) cell comprises a cathode outer can 12 and an anode inner can 14, preferably of amalgamated copper clad stainless steel and containing a zinc anode paste 16 which is maintained within the anode can by separator assembly 18 on the opposite side of which is a flexible catalyst electrode 24. A resilient, pressure sensitive, alkali resistant elastomer is applied on the outer wall of the inner (anode) can at 44, and a seal 22 of polymeric material moulded between the coated outer wall of the inner can and the inner wall of the outer can. The polymeric material of the seal may be polypropylene or polyethylene. Typical elastomers are tacky acrylic resins or lower alkyl elastomers particularly self-curing butyl elastomers comprising recurring carbon chains of lengths ranging from C3 to C6, preferably straight chain members, the elastomers being modified by phenolic resin.
Patent GB-1192053-A (GB)
Title: Improvements in and relating to tape recorders
Inventor: AYUKAWA YUKITADA
IPC: G11B15/22
Filed: 1967-09-08
Abstract: 1,192,053. Tape recorders. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 8 Sept., 1967 [8 Sept., 1966; 12 Sept., 1966], No. 41234/67. Heading G5R. The controls of a tape recorder are powerassisted by the drive motor. The force required to operate the push-buttons is merely that necessary to set control selection means and a clutch through which the motor then supplies the force necessary to move the various parts into their selected operative positions. As shown, Fig. 13, the power is applied to the controls by means of a mutilated gear-wheel 280 which is driven between two positions corresponding to toothless portions 288, 290 by a pinion 258 driven by the motor. The small movement of the gear-wheel 280 necessary to bring the next toothed portion into engagement with the pinion 258 is initiated by the rotation of one of two clutch members 532, 546 into the path of a rotating claw-wheel 256.
Patent GB-1163802-A (GB)
Title: Improvements in or relating to Fluid Operated Presses
IPC: B30B1/32
Filed: 1966-09-15
Abstract: 1,163,802. Hydraulic presses. AUGUST LAPPLE G.m.b.H. & CO. 15 Sept., 1966 [22 Sept., 1965], No. 41271/66. Heading B5F. [Also in Division B3] A fluid-operated press, particularly for assembling together mating component parts of a workpiece, comprises a ram 2 slidable in uprights 3 and connected at its ends to doubleacting piston/cylinder assemblies 5, 6. The press ram is of rectangular shape and is slidable at its corners in four uprights such as 3, 4 connected to a base 13 and an upper frame 17. Tie rods 18 extend within the uprights. At each end of the ram 2 is an elongated support 19 connected by a split ring 16 to a hollow piston 5 working in a cylinder 6 secured by another split ring 14 to the frame 17. The hollow piston 5 passes over a fixed piston 8 secured at 12 to the base 13. The downstroke of the ram 2 is effected by pressure fluid supplied into the cylinders 6 through ducts 7. The upstroke is effected by pressure fluid supplied through ducts 9 in the fixed piston 8. Screw stops 30 interconnected by a chair 31 driven by a motor 32, limit the downstroke of the ram and the latter may be held in a raised position by a pawl 25 actuated by air motors 24 and engaging teeth 27a in racks 21 attached to the ram 2. The press bed 1 is movable laterally by rollers 38 running on rails 39 which may be lowered by hydraulic cylinder units 40 to bring the bed into contact with the base 13 where it is clamped in its operative position by clamps 41 operated by pneumatic cylinders 45. Pressure cushions 48 are provided in the ram and air chambers with dashpots may be provided in the bed.
Patent GB-1176560-A (GB)
Title: Continuous Cleaning Apparatus
IPC: B24C3/08
Filed: 1967-09-12
Abstract: 1,176,560. Blasting. PANGBORN CORP. 12 Sept., 1967 [8 Nov., 1966], No. 41496/67. Heading B3D. A continuous cleaning apparatus comprises: (i) an elongated barrel having an open feed end and an open discharge end to permit the axial flow of parts therethrough, (ii) feed means for delivering parts to said feed end one at a time, (iii) discharge means for receiving parts from said discharge end one at a time, (iv) cleaning means positioned along said barrel for cleaning the parts flowing therethrough, (v) rotation means connected to rotate said barrel to cause the parts therein to rotate as they are cleaned, and (vi) pick-up means on said feed end for removing parts from said feed means and disposing the parts in said barrel. Workpieces 14 are fed by a supply conveyer 12 to a feed conveyer 16 and are then inserted in an elongated rotating barrel 18 through which they are fed axially. The barrel is slotted or skeletal so that the workpieces are cleaned by abrasive blasting machines 20. The cleaned workpieces are discharged on to a receiving conveyer 22 and thence by conveyers 24. Feed conveyer 16 comprises a pair of bands or link chains 26 having projections 28 for maintaining proper spacing between the workpieces. Barrel 18 includes elongated bars 30 arranged for proper positioning of the workpiece in the barrel. A pair of elongated pick-up arms 32 are secured to some of the bars and fit between chains 26. One bar 30a terminates short of arm 32 so as not to interfere with the workpiece sliding into the barrel. Barrel 18 has a ring gear 34 driven by a gear train 36 also connected to drive gear 38 for conveyer 16 to ensure synchronization. The workpiece is moved axially into the barrel by a periodically actuated piston cylinder assembly 40, thereby moving the workpieces in the barrel towards the discharge end. The barrel has a number of workpiece positioning members arranged so as to receive the specialized shapes of various manifolds, automobile heads &c. For example, a workpiece 14b is positioned by bars 45, 46, 47 with bars 48 inactive while a differently shaped workpiece 14c is positioned by bars 46, 47, 48 with bars 45 inactive. The number of bars may be reduced by having some or all of them adjustable. To re-orientate the barrel relative to the conveyer, a clutch 50 disengages the drive 36 and a clutch 52 engages a gear 54 with a manual or automatic drive.
Patent GB-1236845-A (GB)
Title: Polycarbonates
IPC: C08G64/20
Filed: 1969-08-22
Abstract: 1,236,845. Continuous production of polycarbonates. IDEMITSU KOSAN CO. Ltd. 22 Aug., 1969 [28 Aug., 1968], No. 41924/69. Heading C3R. Polycarbonate oligomers are continuously produced by introducing an aqueous caustic alkali solution of an organic dihydroxy compound and an organic solvent for the oligomer into a tubular reactor, and feeding phosgene to the reactor in co-current flow with the mixed stream of alkali solution and organic solvent, so that part of the solvent is evaporated and atomizes the mixed stream of caustic alkali solution and organic solvent. The phosgene is preferably fed to the reactor at more than one inlet. The aqueous solution and the organic solvent are preferably fed to the reactor at a temperature a little below the boiling point of the organic solvent. The dihydroxy compound may be a 4,4<SP>1</SP>-dihydroxydiphenyl alkane or halogen derivative thereof. The vaporized solvent may be condensed by cooling the outside of the reactor, causing the mixture to be converted from the atomized state to a twoliquid mixed stream. The rates at which the aqueous solution and the organic solvent are fed to the reactor are preferably such that the aqueous effluent liquid is weakly alkaline. High molecular weight polycarbonates may be obtained by polymerizing the oligomers.
Patent GB-927879-A (GB)
Title: Improvements in and relating to load handling or earth working tractors
IPC: B62D49/06
Filed: 1960-12-06
Abstract: 927,879. Shovelling machines. LANDSVERK A.B. Dec. 6, 1960 [Dec. 17, 1959], No. 41942/60. Class 68 (1). [Also in Groups XXX and XXXI] A tractor comprises a front section 1 and a separable rear section 2, which may be separated and joined by an intermediate section 3, Fig. 1. The front section contains the driving cab and steering-wheel. The rear section includes the vehicle engine 7, change-speed gear 8 and a differential gear 17 from which drives may. be taken to differential gears incorporated in the front and rear axles. The separating faces of the sections have flanges 19, as shown in detail for the intermediate section in Fig. 6, provided with holes 20 in which connecting bolts may be located. The steering-wheel is connected through links and gears to steer the rear wheels or to both sets of wheels. The intermediate section comprises a frame 19, 21 upon which is revolvably mounted a turret member 24 which may be rotated by an hydraulic driving motor 21a having a pinion meshing with a gear member 24 of the turret. The turret 24 may support an excavating device comprising a boom 41, and a bucket arm 42 operated by a cylinder 44, and a bucket 43 actuated by a cylinder 45. An earthworking attachment 49 comprising a bucket 49, mounting arms 48, 47, bucket cylinders 50 and lifting cylinder 46 may be attached to the front section. The intermediate section may also be provided with a flanged collar 36 co-operating with a flange 47 on the turret to form a seal.