baber/WOPTO huggingface dataset:
Patent GB-1283872-A (GB)
Title: Roller leveler with removable roll units
IPC: B21D1/02
Filed: 1970-10-27
Abstract: 1283872 Straightening SUTTON ENG CO 27 Oct 1970 [27 Oct 1969] 50944/70 Heading B3E A roller leveller comprises a frame having ends 1 and 2 connected by members 3 and 4, vertically spaced pairs of roll units 6, 7 and 8, 9, a plurality of wedge units 63-65 for deflecting the roll unit 7, and means mounting the roll unit 7 for movement parallel to the longitudinal axes of the members 3 and 4. Work rolls 40 of roll unit 7 are journalled in bearing blocks 39 attached to retainers 43 and thrust rolls 48 are mounted on the bearing blocks 39 so as to engage the ends of intermediate rolls 47. The retainers 43 have tongues 44 engaging gibs 45 mounted on the frame ends 1 and 2 and are attached to a carrying plate 72. Back up rolls 50 are journalled in supports 51 which are also mounted on the carrying plate 72 and have tongues 55 which engage grooves 54 of rocker blocks 53. The rocker blocks are urged to their lowest position by lugs 56 engaging slots 57 in the sides of the blocks, the lugs being urged downwardly by springs 60. Each rocker block has a convex wedge block 63 having a wedge slot 64 which co-operates with a wedge 65 such that on movement of the wedge inwardly or outwardly, by rotation of screw 66, the supports 51 are raised or lowered. Thus the roll unit 7 can be clamped in position by attaching the carrying plate 72 to a base-plate by bolts 78 and tightening gibs 45 on to the tongues 44. Similarly, the roll unit 7 can be replaced, without disturbing the wedge units, by releasing bolts 78 and gibs 45 and moving the unit parallel to the longitudinal axis of members 3 and 4 on to a support. Similar release arrangements are described for replacing roll units 6, 8 and 9.
Patent GB-1491223-A (GB)
Title: Lens testing apparatus
IPC: G01M11/02
Filed: 1974-11-26
Abstract: 1491223 Lens testing POLAROID CORP 26 Nov 1974 [28 Dec 1973] 51219/74 Heading G1A A lens is tested by photo-electrically measuring the contrast transfer efficiency simultaneously along a plurality of different optical paths through the lens. The inspection apparatus of Fig. 4 forms part of an overall system which includes conveyers feeding the lens to be tested thereto and apparatus for sorting out those which do not reach the required standard, Fig. 3 (not shown). Light from lamp 44 is conveyed either direct or via mirrors in a total of thirteen paths to the lens 12t to be tested. Each beam passes via a respective condenser-diffuser 80 and window 62, through a respective chopper wheel 36, which passes evenly-spaced slits at a predetermined spatial frequency through the beam. The images focused by lenses 34a at the lens 12t has a spatial frequency of 7¢ lines per mm. A plate 42 is mounted in the nominal focus plane of lens 12t and carries two concentric rings of slits, of alternately radially aligned and tangentially aligned slits. The slits are individually mounted so as to be adjustable in position in a direction perpendicular to the plane of the plate 42 to conform to the field shape for a perfect lens. The image of the slits (72) in chopper wheels 36 are focused on to slits (100) of plate 42. The light is then detected via condenser 38 on photomultiplier 40. During testing of each lens, one element thereof is rotated by a gripping (focusing) mechanism so that a predetermined depth of field of the lens is examined. The photo-multiplier processing circuit includes a feedback control loop 150 operating on the photo-multiplier supply voltage and utilizing its D.C. output to compensate for thermal drift and lamp ageing. The amplified output is applied to thirteen channels corresponding to the different optical paths and identification being performed by virtue of the fact that the choppers 36 are rotated at different respective speeds. Filtering at 184 at the required frequency and detection at 186, isolates the D.C. level, representing the contrast transfer efficiency, in each channel. Comparators 188 and 190 are set at 40% and 60% efficiency respectively. The focusing mechanism operation is monitored by shaft encoder 152 and counter 200 indicates the proportion of the depth of field of the lens which was greater than 40%. This has to exceed a certain value for all channels, as detected by processor 198 and besides this each channel has to have reached the 60% level at some time, as detected at gate 202. Additionally to contrast transfer efficiency spectral transmission balance, focusing torque, scattering and focal power may be monitored, to add into the overall acceptability criteria.
Patent GB-1416176-A (GB)
Title: Demand pacemakers
IPC: A61N1/37
Filed: 1972-11-07
Abstract: 1416176 Cardiac pacemakers MEDTRONIC INC 7 Nov 1972 [11 Nov 1971] 51369/72 Heading A5R A demand pacemaker has means for inhibiting a stimulation pulse in response to a natural heartbeat, means for progressively decreasing the energy of successive stimulation pulses which occur following or in response to a stimulated heartbeat and means for increasing the energy of a stimulating pulse in response to failure of a preceding pulse to stimulate the heart provided that the preceding pulse has energy less than the maximum stimulation pulse energy. A pulse generator 15 including a timing device emits periodic pulses and is reset by a signal from an amplifier 11 which senses natural or induced heart pulses so that the generator 15 only emits signals when the heart is not beating naturally or stimulated or the sensing mechanism is inoperative. The amplifier 11 is connected to the heart by an electrode 12 and a common electrode 26 of large area to prevent polarisation effects, the common electrode also being used with a second electrode 25 for stimulating the heart. An emission of a pulse by the generator 15, a transistor 20 powered by a battery connected by a positive lead 22 through an output voltage capacitor 29 and a negative lead 32 through a second transistor 31 produces a stimulation pulse. A second pulse generating circuit, comprising transistors 36, 42 together with a timing capacitor 48 and a reset transistor 50, provides in response to a signal from the generator 15, when a heartbeat has not been stimulated and sensed, a signal to the transistor 31 which thus produces an 'escape' pulse which charges the output capacitor 29 so that the next stimulation pulse is of increased amplitude. In the event that a heartbeat is stimulated, the generator 15 is inoperative, the second generating circuit will not operate and the energy of the next stimulating pulse provided by the capacitor 29 will be reduced. In an alternative circuit the collectors of the transistor 31 Figure 2 not shown, and the output transisitor 20 are connected by a lead (81) and a diode (80) so that when the heart misses a beat and the generator 15 emits a signal, a maximum energy pulse is applied to it within 100 millisecs at the same time as the capacitor 29 is recharged for increasing the energy of the stimulating pulses above the threshold value.
Patent GB-1088299-A (GB)
Title: Liquid-gas contacting apparatus and method
IPC: B01D19/02
Filed: 1965-12-03
Abstract: 1,088,299. Liquid-gas contactors; film evaporators. COMBUSTION ENGINEERING Inc. Dec. 3, 1965 [June 18, 1965], No. 51493/65. Headings B1B and B1F. In a liquid-gas contacting apparatus the liquid is introduced through a pipe 64 into the hollow central core 42 of a rotor 22 whence it passes out through apertures 62 and is then faced by centrifugal forces in film form through the passageway formed between the coils of a sheet 68 which is spirally wound around the core (see Fig. 3), the gas passing in the axial direction through the rotor. The sides of the sheet 68 are turned inwardly to form liquid retaining lips 80. When the liquid reaches the outer end of the spiral it can only flow axially out through either end of the rotor, and is thrown into the outer portion of troughs 81 whence it is removed by stationary scoops 90. Such a scoop is shown in detail in Fig. 6. From the scoops the treated liquid is transferred via lines 104 and 106 to the discharge line 108. The rotor is enclosed within casing 112 into which the gas, e.g. air, is admitted through opening 118. The air then flows through an opening 124 filled with dampers 132 to a motor driven fan 128 which causes the air to flow through a core 138 and axially through the rotor so contacting the liquid. Both the liquid and gas may be heated prior to the contacting. The gas is heated by introducing steam through nozzles 150 controlled by a valve 148 which is itself controlled by a device 152 sensing the temperature of the liquid product. The incoming liquid may be heated at 158 by steam from line 146 under the control of a temperature measuring device 164 and regulator 166. Flooding or malfunctioning of the drive means of the rotor may be prevented by a speed sensing device controlling the feed in of liquid (Fig. 7). The contacting apparatus may be an oxidizer which forms part of a pulping system in which the liquid is black liquor which is oxidized prior to evaporation and recovery (Fig. 1). The apparatus may also be employed for evaporating liquids.
Patent GB-1511798-A (GB)
Title: Recovery of platinum from spent catalyst material
IPC: C01G55/00
Filed: 1976-12-13
Abstract: 1511798 Recovery of Pt VYSOKA SKOLA CHEMICKO-TECHNOLOGICKA 13 Dec 1976 [29 Dec 1975] 51840/76 Heading C7D Platinum is recovered from spent catalysts by subjecting the catalyst to fluorination by elementary fluorine or a mixture of F and HF at 100-600‹C and converting the PtF arising to metallic Pt. When the fluorination is carried out at 100- 300‹C, the PtF formed is non-volatile and may be dissolved in a mineral acid at 90-100‹C, e.g. HCl, and the Pt recovered in metallic form from the hydrolized material. When the fluorination is carried out at 300- 600‹C the PtF formed is volatile, and is condensed at -40‹C or absorbed in water at room temperature or in a solid fluoride such as sodium fluoride at 100-400‹C, prior to hydrolizing with a mineral acid as before.
Patent GB-1139472-A (GB)
Title: Improvements in gas turbine engines
IPC: F02C7/05
Filed: 1966-11-21
Abstract: 1,139,472. Gas turbine plant; axial flow compressors. GENERAL ELECTRIC CO. Nov. 21, 1966 [Feb. 1, 1966], No.51958/66. Headings F1C and F1G. [Also in Division B1] A gas turbine engine has at the inlet to the compressor a separator for removing extraneous matter from the airflow comprising an elastic diaphragm 42 inflatable into an extended position, shown, in which it deflects the matter away from the compressor inlet guide vanes 61 into an annular slot 35 leading to a collection chamber (55), Fig. 1 (not shown), from which it is drawn off to atmosphere by an extraction pump (57). In the deflated condition, Fig. 2 (not shown), diaphragm 42 is substantially contiguous with its cylindrical support 40 and a second elastic diaphragm 80 is inflated to close off slot 35 and form a smooth flow path with walls 30 and 31. Inflation and deflation of the individual diaphragms may be controlled independently or by a single system. Some extraneous matter is also collected in cavity 43 within support 40 from which it may be drawn off through pipe 60 by an extraction pump. Electric heating elements may be embedded in the diaphragms for de-icing.
Patent GB-1498155-A (GB)
Title: Food processing device
IPC: A21C15/00
Filed: 1975-12-19
Abstract: 1498155 Filling food shells; bakery apparatus M EZAKI 19 Dec 1975 52107/75 Headings A2A and A2B A device for filling tubular food shells comprises a conveyor having cradles 24 thereon for holding said food shells 25. The conveyor is operated in a stepwise fashion and at each step keep plate 84 and adjustable stops 75 are moved into contact with the shells to hold them in place. Nozzles 65 are moved into contact with the food shells and a measured amount of filling ejected into the tubular shell. The shells are moved on the conveyor opposite nozzles 81 which are then moved into contact with the shells and an air jet injected so as to spread the filling over the inner surface of the food shell in the manner shown in Fig. 7.
Patent GB-1172138-A (GB)
Title: Bubbler Assembly for Oxygenator
IPC: A61M1/32
Filed: 1967-11-20
Abstract: 1,172,138. Aerating liquids. BENTLEY LABORATORIES. 20 Nov., 1967 [12 Dec., 1966], No. 52649/67. Heading B1C. [Also in Division A5] The bubbler assembly of a blood oxygenator device, wherein films of blood in bubble form are produced by directing oxygen into a stream of venous blood (thereby transferring oxygen to, and releasing CO 2  from, the blood), comprises (a) a hollow elongated housing adapted to be positioned in use to provide an internal chamber for confining the flow of blood bubbles in a predetermined path, (b) inlet means for venous blood at one end of the housing communicating with the internal chamber, (c) outlet means at the other end of the housing for the passage of blood bubbles outwardly of the bubbler assembly and (d) oxygen inlet means disposed adjacent to the blood inlet means, the oxygen inlet means including wall members defining an oxygen inlet chamber adapted for connection to a source of oxygen under pressure, one portion of these wall members being so positioned relatively to the blood inlet means that blood entering the blood inlet means will flow over this portion, which is provided with a plurality of minute apertures to direct jetting streams of oxygen therethrough from the oxygen inlet chamber into the venous blood flowing over the apertures to form blood bubbles which flow through the internal chamber to the outlet means. In Fig. 4, bubbler assembly 28 comprises oxygen inlet 64 (leading into annular oxygen inlet chamber 86) and blood inlet 63, the oxygen passing through the plurality of minute apertures in cone-shaped wall member 90 to form the blood bubbles which pass up the passageway 72, along passageway 73, down passageway 74, through opening 97, up passageway 75 and out through outlet means 67. Subsequently the stream of blood bubbles is converted to a stream of oxygenated blood and the temperature of the bubble-free blood is adjusted in a heat exchanger (see Division A5).
Patent GB-1507859-A (GB)
Title: Signal distribution device for a cable television network
IPC: H04N7/16
Filed: 1975-12-24
Abstract: 1507859 Wired television systems OAK HOLLAND BV 24 Dec 1975 [24 Dec 1974] 52836/75 Heading H4R In a radio and television distribution system wherein a programme line 1 carries the programmes as a high frequency multiplex each subscribers drop line 2 is connected to the programme line 1 via a high frequency switch 5 which is operated via a code receiver 3 and logic 4 from a central distribution point. Such an arrangement is used to deny a subscriber access to all the programmes on the line. In addition means may be provided for denying access, on a selective basis, to up to four programmes by the use of four oscillators 9, the outputs of which can be selectively coupled to subscribers drop lines under the control of the code receiver 3 to jam reception of a particular programme by a particular subscriber. A switch comprising diodes, capacitors and resistors for use as the switch 5 is illustrated in Figure 3a not shown. In a second embodiment the switches coupling in the jamming signals are arranged in series in the drop line (Figure 5, not shown), each switch comprising a T filter including a varicap controlled by an A.C. power source in the cross branch of the filter (Figure 6, not shown).
Patent GB-1411405-A (GB)
Title: Detergent compositions
IPC: C23G3/00
Filed: 1972-11-20
Abstract: 1411405 Detergents containing polyelectrolytes MARATHON OIL CO 20 Nov 1972 [12 Jan 1972] 53443/72 Heading C5D A detergent composition comprises a surfactant and an isocyanurate-based polyelectrolyte having a structure formed of the units wherein R is a divalent hydrocarbon or substituted hydrocarbon radical, e.g. as illustrated in the formulµ of Figs. 2 and 3 (not shown) ; X is H, a metal or a quaternary NH 4  radical; A is isocyanate (-NCO), urethane (-NHCO 2 R<SP>1</SP>), urea (-NHCONHR<SP>1</SP>), amino (-NH 2 , -NHR<SP>1</SP> or -N(R<SP>1</SP>) 2 ), wherein R<SP>1</SP> is a monovalent- or substituted monovalent-hydrocarbon radical; M is zero or 1 to 400; N is 1 to 10,000; provided that there are no N-to-N direct bonds, no A-to-A direct bonds, no N-to-A direct bonds and no R-to-R direct bonds. The detergent composition may contain (A) 2 to 20% wt. of the isocyanurate-based electrolyte, (B) 2 to 70% wt. of a surfactant, (C) 0 to 70% wt. of a phosphate builder, (D) 0-40% wt. of a silicate builder, (E) 0-15% wt. of an anti-redeposition agent, (F) 0-40% of inorganic builder other than (C) and (D), and (G) 0 to 40% wt. of sodium citrate, sodium tartrate, sodium gluconate or a mixture thereof. Preferably phosphates including polyphosphates are absent. The compositions are particularly useful for laundering and dishwashing. The polyelectrolytes have sequestrant and soil anti-redeposition properties.
Patent GB-1221004-A (GB)
Title: Method and apparatus for processing information
IPC: G01T1/17
Filed: 1968-11-13
Abstract: 1,221,004. Cathode-ray distributer tubes. KERNFORSCHUNG m.b.H. GES. FUER. 13 Nov., 1968 [21 Nov., 1967], No. 53881/68. Heading HID. [Also in Division G1] Analogue signals from proportional counting tubes 1 or spark chambers operating in the proportional region, are read in turn by a cathode-ray distribution tube, the tubes 1 acting as electrostatic storage means and being connected through a common load resistance 2 to a negative H.T. source 3. The cathode-ray tube may comprise a number of pins 5 sealed through a glass face plate 6 and coated internally at 7 with secondary emissive material. Each dynode so formed is covered by a protective electrode 8 from which it is insulated, all the electrodes 8 being connected together. A grid 9 is arranged 0À1 mm. in front of the electrode 7 and 8, and together with these electrodes and an anode 10 forms an assembly which is connected by means of glass solder to the envelope 11 of the tube. The grid 9 prevents formation of an electron cloud in front of the dynodes, and the protective electrode 8 prevents secondary electrons from passing to adjacent dynodes. It is preferable to step the electron beam from one dynode to the next to prevent the interferences generated when the beam is scanned continuously.
Patent GB-1111807-A (GB)
Title: Process for wet spinning elastic polyurethane fibers
IPC: D01D5/06
Filed: 1965-12-20
Abstract: 1,111,807. Wet spinning elastomeric polyurethane filaments. MONSANTO CO. 20 Dec., 1965 [21 Dec., 1964], No. 83912/66. Heading B5B. Elastomeric polyurethane filaments are produced by wet spinning a solution of a segmented polyurethane polymer in an organic solvent into a coagulating bath consisting of water and the organic solvent, drawing the filaments upwards along a vertical path from the spinneret face through the coagulating bath a distance of 0À5 to 3À0, preferably 1À5 to 2À0 inches at a rate of withdrawal which will result in the filaments remaining in the bath for 0À025 to 0À2 second, preferably 0À075 to 0À1 second, so that the filaments emerge from the bath in a direction which is normal to the surface of the coagulating bath and forwarding the filaments for further processing after their emergence from the coagulating bath. The solvent may be dimethylformamide or dimethylacetamide, dimethylsulphoxide or hexamethphosphoramide. The aqueous coagulating bath is preferably maintained at about 60 to 90 C. and the percentage of organic solvent in the bath may be about 1 to 40%. In an example, the polymer solution is formed by first forming a solution of a " prepolymer " by reacting a polycaprolactone with 4,4<SP>1</SP> methylenediphenyl diisocyanate in dimethylformamide solvent and the solution is added to a solution of ethylene diamine in dimethylformamide to give a spinning dope containing 15% solids. In all the examples the filaments formed are washed, dried and taken up after their emergence from the bath.
Patent GB-1136540-A (GB)
Title: Method of manufacturing magnetic thin film data stores and stores manufactured thereby
Inventor: AXFORD JOHN GILBERT
IPC: G11C11/14
Filed: 1967-11-28
Abstract: 1,136,540. Magnetic storage apparatus. INTERNATIONAL BUSINESS MACHINES CORP. 28 Nov., 1967, No. 54005/67. Heading H3B.  A magnetic thin film data store  is formed by depositing a layer of anisotropic magnetic material and a layer of conductive material, in turn, on to a conductive substrate 1 provided with an insulating coating 2, parts of the deposited conductive and magnetic layers being then removed by etching so as to leave strips 3, 15 of magnetic material surmounted by conductive strips 5, 14, the strips 5 serving as bit drive and sense conductors and strips 14 as noise compensating conductors. The magnetic strips are formed with a transverse easy direction of magnetization, alternate strips 15 being substantially narrower so as to be self demagnetizing. Information is stored at discrete locations in the wider strips 3 which are each provided with a magnetic keeper layer 6. The arrangement is covered by an insulating layer 7 before strip word conductors 8 and an overall magnetic keeper layer 9 are added. The assembled matrix is connected to word drivers 10 and to bit drivers 13 and differential sense amplifiers 11 as shown in Fig. 1, the compensating strip conductors 14 overlying the self-demagnetizing strips 15 providing capacitive noise output signals which neutralize within the differential amplifiers the capacitive noise in the bit drive and sense strips 5.
Patent GB-1308819-A (GB)
Title: Iron trochoid housing of a rotary piston machine
IPC: C23C8/38
Filed: 1970-11-17
Abstract: 1308819 Nitrlding ELEKTROPHYSIKALISCHE ANSTALT BERNHARD BERGHAUS 17 Nov 1970 [12 Dec 1969] 54624/70 Headings C7U The trochoid housing of a rotary piston machine is nitrided over part of its surface by means of a glow discharge in an atmosphere containing nitrogen, the remainder of the surface being coated to inhibit the glow discharge, for at least 5 hours, at a pressure of 0À1 - 5 mmMg and using an operating voltage of at least 500V., the thickness of the iron nitride being kept below 10Á-
Patent GB-1339157-A (GB)
Title: Electroless plating
IPC: C23C18/20
Filed: 1971-11-25
Abstract: 1339157 Coating with metals TORAY INDUSTRIES Inc 25 Nov 1971 [25 Nov 1970 24 Dec 1970] 54711/71 Heading C7F Prior to electroless plating with a magnetic material, a substrate is coated with Pd by cathode sputtering. The substrate may be inorganic or organic, and may be given a prior coating of a good conductivity material in the case of inorganic substrates, or a coating of Cu, Co, Cr, Al, Zn, Mn, Ag or Sn for organic substrates. Various examples are given for the production of materials for recording tapes and discs. The substrates, in the examples, are subsequently coated with Co by reduction of CoCl 2  by sodium hypophosphite. Various plastics substrates are refered to, and they are moved continuously during the sputtering process. During sputtering, a small amount of gas is included in the chamber, for example A, Xe, Ne, Kr, N 2 , O 2 , H 2  or air.