baber/WOPTO huggingface dataset:
Patent GB-1448594-A (GB)
Title: Manufacture of magnetic discs
IPC: G11B5/73
Filed: 1973-11-09
Abstract: 1448594 Magnetic coated recording disc BASF AG 9 Nov 1973 [10 Nov 1972] 52065/73 Addition to 1448593 Heading B2E A magnetic recording disc is produced by coating a non-magnetic metal base disc with a dispersion of magnetic pigment and finely divided non-magnetic pigment having a Moh's hardness of at least 6 in a solution in an organic solvent of a binder and converting the resulting coating into a solid hard magnetic coating by drying and curing, the non- magnetic metal base disc prior to application of the magnetic coating being provided with a hard and polishable non-magnetic intermediate layer of a pulverulent mixture of inorganic non- magnetic pigments having a Mohs hardness of at least 7, the mixture containing at least 3% by weight based on the pigment mixture of corundum powder having a particle size of 1-20 microns dispersed in a curable binder. Examples of non-magnetic inorganic pigments having a Mohs hardness of at least 7 which can be used together with corundum powder are quartz, alpha-iron oxide, silicon carbide, chromium oxide, or diamond and preferably cerium dioxide. Preferably a mixture of non- magnetic powders consists of 5-12% corundum and 95-88% cerium dioxide or a cerium powder containing at least 45% of cerium dioxide. The curable binder may be an epoxy resin which can be cured by polyamines, polyaminoamides, phenolic resins, urea-formaldehyde precondensates, melamineformaldehyde precondensates. A particularly suitable binder is a mixture of an epoxy resin prepared from bisphenol A and epichlorohydrin and a precondensate of phenol or alkylphenol and formaldehyde which contains at least 2 methylol groups etherified with a 1-4C-alcohol. The cured intermediate layer may be ground and polished prior to application of the magnetic layer. Suitable non-magnetic pigments for the magnetic layer are silicon carbide, boron carbide, aluminium oxide or silicon dioxide. Preferably corundum powder and/or cerium dioxide are used as the non-magnetic pigments in the magnetic coating. The disc may be an aluminium disc.
Patent GB-1299853-A (GB)
Title: Ignition systems
Inventor: BRANSDEN ERNEST JAMES
IPC: F02P3/04
Filed: 1968-11-04
Abstract: 1299853 Ignition systems E J BRANSDEN 30 Oct 1969 [4 Nov 1968] 52132/68 Heading F1B An ignition system for an internal-combustion engine includes a pulse generator 1 arranged to be driven by the distributer shaft 4 or other shaft driven by the engine to produce pulses which are fed to control a transistorized switching circuit 2, which in turn controls the energization of the ignition coil, the switching circuit being arranged such that the ignition coil is switched off for a period which is of relatively short duration and which is of constant duration irrespective of the speed of the distributer or shaft and thus of the speed of the engine. In a modification (not shown) the pulse generator incorporates the conventional contact breaker points, the magnetic pulse generator 3-6 shown in Fig. 1 being omitted.
Patent GB-1069216-A (GB)
Title: Pricing apparatus for subscription television
Inventor: COURT PATRICK RICHARD JAMES
IPC: H04N7/16
Filed: 1964-12-23
Abstract: 1,069,216. Subscription television systems. BRITISH TELEMETER HOME VIEWING Ltd. Dec. 23, 1964, No. 52374/64. Heading G4V. In a subscription television system, the price charged for a programme is indicated at the receiver by means responsive to the frequency of a single transmitted signal. In the Figure, a motor 34, when energized, drives an endless band 40, so that projection 40a and 40b thereon, alternately engage a finger 46 on slider 48. A further finger 56 engages a spring-biased pawl 58 on slider 66, so that the motor traverses both slides from right to left. At the position where abutment 76 closes switch 80, projection 40a or 40b disengages from finger 46 whereupon spring 70 returns both sliders to the extreme right. This cycle is repeated, until a price indicating signal is applied to detector 28 from a subcarrier. The detector contains a tone generator the frequency of which is swept through the relevant range, e.g. a sonic or ultrasonic range, by the shaft of gear 52 meshing with rack 50. When the local tone frequency matches the fiequency of the " price " signal, the detector output energizes solenoid 88 to apply brake 90 and stop the motor. A finger 72 indicates the price on scale 74. The insertion of coinage closes switch 93 a proportionate number of times, to operate stepping pawl 95 on rack 96 and advance slider 66. Pawl 58 is thus freed from finger 56, and engages non-return rack 62. When the inserted coinage corresponds to the price demanded, finger 72 reaches the " paid " position PD, and switch 80 is closed to enable the programme to be received. When the price signal ceases, solenoid 88 is de-energized, and slider 48 is moved to the left, finger 56 releasing pawl 58 from rack 62, and the two sliders are again swept from right to left by motor 34 until the next programme price signal is received. In an alternative, slider 48 is reciprocable manually, and the coincidence of the local tone and received tone frequency is shown by lighting a lamp, and energization of a non-return pawl which retains slider 66 at the correct indicated price, while permitting its advancement by the coin mechanism.
Patent GB-1176854-A (GB)
Title: Substituted-3,4-Dihydroquinazolines and method fo preparation
IPC: C07D491/04
Filed: 1967-11-20
Abstract: 1,176,854. 2-Amino-3,4-dihydroquinazolines. CHAS. PFIZER & CO., Inc. 20 Nov., 1967 [11 Oct., 1967], No. 52759/67. Heading C2C. The invention comprises compounds of formulµ and their acid addition salts, wherein X and Y are H, OH, halogen, CF 3 , C 1-4  alkyl or C 1-4  alkoxy, or X-Y is benzo, methylenedioxy or ethylenedioxy; R 1  and R 2  are H, C 1-6  alkyl, aryl, aralkyl, alkenyl or dialkylaminoalkyl, or R 1 -R 2  is C 3-7  cycloalkyl; R 3  is H, C 1-4  alkyl, aryl or aralkyl, and R 4  is morpholino, or 4- alkyl, 4-alkenyl or 4-(optionally substituted) phenylpiperazino. These compounds are prepared by (a) (where R 3  = H) reducing the corresponding 4-chloroquinazoline with H 2 /Pd-C, or (b) reducing the corresponding 4(3H)-quinazolinethione with Raney Ni/MeOH. Therapeutic compositions comprise the above compounds which may be administered orally or parenterally for reducing the blood pressure of hypertensive subjects, in combination with pharmaceutically-acceptable carriers. Alternatively, these compounds may be administered above.
Patent GB-1485780-A (GB)
Title: Vehicle wheel rims
IPC: B60B21/02
Filed: 1974-12-06
Abstract: 1485780 Vehicle wheel rims KRONPRINZ AG 6 Dec 1974 [14 Dec 1973] 52766/74 Heading B7C The bead seats 2 of a one-piece drop-centre vehicle wheel rim merge at their axially inner edges in to the well 3 of the rim except at three or more circumferentially spaced locations in each of which each seat 2 merges into a radially outwardly directed projection 4 for preventing displacement of a tyre bead on the seat into the well. The radially outer surface 5 of each projection 4 may slope towards the well at an angle α of at least 5 degrees, and part of the axially outer surface of each projection may slope axially and radially outwardly at an angle # as shown.
Patent GB-1123367-A (GB)
Title: Production of carboxylic acids or carboxylic esters
Inventor: KUTEPOW NIKOLAUS VON
IPC: C07C51/14
Filed: 1965-12-17
Abstract: A process for the production of carboxylic acids or carboxylic esters comprises reacting a mono-unsaturated or poly-unsaturated compound with (a) carbon monoxide and (b) water or an alcohol or a phenol at elevated temperature in the presence of palladium metal or a palladium chalcogenide together with an acid and an organic phosphine and/or nitrile.  Preferably the process is carried out at a temperature from 30 DEG  to 180 DEG  C. and at a pressure of 25 to 1000 atmospheres and an organic phosphine is used containing at least one aromatic radicals, e.g. a triaryl phosphine or tricycloalkyl phosphine having 18 to 30 carbon atoms or trialkyl phosphine having three to 30 carbon atoms.  The nitrile used preferably has 2 to 20 carbon atoms and one to two nitrile groups.  In an example an autoclave is charged with cyclododecatriene (1,5,9), ethano containing hydrochloric acid, triphenyl phosphine and palladium on carbon as catalyst, and after flushing with nitrogen and forcing in carbon monoxide at 300 atmospheres gauge the autoclave is heated. Eventually cyclododecadiene - (5,9) - carboxylic - (1) - ethyl ester is obtained.  Many other examples are given.
Patent GB-1118138-A (GB)
Title: Flexible barges
IPC: B63B35/28
Filed: 1965-12-17
Abstract: 1,118,138. Flexible barges. A. THORSTEINSSON. 9 March, 1967 [17 Dec., 1965], No. 53725/65. Heading B7A. A flexible barge for the transport and/or storage of solids, such as fish, suspended in sea water comprises a longitudinally extending collapsible container formed of flexible material and having valves 9 in its bottom portion for the passage of sea water, the upper portion being inflatable with air and having a loading entrance 2 with a neck extending into the container to a level below that of the sea water in the container thereby preventing the escape of air from said upper portion. The valves 9 are automatically maintained closed unless opened by air pressure from a source separate from the barge. The container is provided with a discharge port 5 and inflatable floats 13, and also with transverse partition 3 and a longitudinal network partition 7 which extend down to a level 4-4 so as to leave a non-compartmented bottom portion.
Patent GB-1326102-A (GB)
Title: Rubber latex glove and method for forming  same
IPC: A61B19/04
Filed: 1970-11-12
Abstract: 1326102 Gloves AFFILIATED HOSPITAL PRODUCTS Inc 12 Nov 1970 [14 Nov 1969] 53994/70 Heading A3V [Also in Division B5] In an elastic glove 11 formed from rubber latex, the finger, thumb and palm areas 23, 25 and 27 respectively are roughened to provide gripping surfaces, and the interior handengaging surface 11a is also roughened. The glove is made by first forming a film of rubber latex on a form 21 having a textured surface, spraying the film, while in an uncured state, with an aqueous latex solution to provide the exterior roughened effect, and thereafter curing the glove whilst still on the form. The wrist zone 21b may be smooth and non-textured.
Patent GB-1253851-A (GB)
Title: Slide projector
IPC: G02B27/18
Filed: 1968-11-14
Abstract: 1,253,851. Slide projectors. MINNESOTA MINING & MFG. CO. Nov.14, 1968 [Nov.15, 1967], No.54142/68. Heading G2A. A projector in which slides are mounted in a pack 17 on track, the slides being inter-connected in spaced relation by complementary ridges on their mounts, has slide-changing apparatus by which single slides are withdrawn from and reinserted in the pack in inter-connected relation, there being a stablizer 20 by which the pack is held steady during movement of a single slide. Each slide frame has a notch in its lower edge which is engaged by a square boss 48 on a laterally slidable block 45. Rod 43 connects block 45 to a face cam wheel 32 rotating on pin 36 of an arm 33 pivoting on axle 82 of a drive pinion 34 meshing with wheel 32. Fixed peg 39 on support plate 38 enters an eccentric cam groove in wheel 32 whereby as the wheel is rotated it swings on arm 33 and shifts block 45. As the slide approaches the projection position a lobe of wheel 32 shifts slider 67 to open shutter 68 in front of lamp 24. As the slide is returned to pack 17 the sloped front edge of block 48 raises a plunger 77 which lifts cover (21), Fig.3 (not shown), of the stabilizer (20) against spring (74). Lateral grooves on cover (21) engage the slide to be projected and those adjacent and prevent longitudinal motion of pack 17 by permitting lateral movement of the single slide. As cover (21) is lifted, the cam lobe finally trips lever 65 pivoted at 78 whereby indexing lever 53 is displaced. A ratchet lever 50 is pivoted on lever 53 and has two arms selectively engageable with an elongated gear 19 to impart forward a reverse rotation of that gear. The teeth of gear 19 engage the undersides of the slides in pack 17 and index the pack by one slide width for each displacement of lever 53. A solenoid-operated plunger 61 displaces the reverse drive arm of lever 53 into position. Motor 35 is momentarily activated to drive pinion 34 for each slide change. Rack and pinion focusing of lens barrel 14 is provided, and Fresnel screen condensers are placed on each side of the projection gate.
Patent GB-544498-A (GB)
Abstract: 544,498. Magnetic tests and measurements. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 15, 1940, No. 16518. Convention date, Nov. 16, 1939. [Class 37] A gauge for measuring the thickness of magnetic material comprises a magnetic circuit in which a uni-directional flux is produced which is sufficient to saturate the magnetic material whose thickness is to be measured but not to saturate the magnetic circuit, changes in the magnitude of the uni-directional flux in the magnetic circuit caused by variations in thickness of the magnetic material being measured The gauge head 12, Fig. 2, is constructed of cold drawn steel and comprises a continuous cylindrical pole piece 13 closed at the lower end by a yoke 14. A central laminated core 15 engages the yoke 14 and is of material such as silicon steel of which the incremental permeability varies with variations in flux density. The core 15 is provided with a slot 16 through which pass windings 20, 21. A winding 19 excited with direct current causes a uni-directional flux to pass through the cylindrical pole piece 13 and the plate 11 of which the thickness is to be measured, returning through the central core 15. A voltage regulating transformer 22, Fig. 3, has a primary winding 23 and two secondary windings 24, 25. The primary winding 23 is connected to an A.C. source 27, the core being saturated so that the voltage induced in the secondary windings 24, 25 is independent of voltage fluctuations in the source 27. The primary winding 20 of the core 15 is connected to the secondary winding 24 through a potentiometer resistance 28. The secondary winding 21 is connected through a rectifier 31 to a D.C. instrument 32. The secondary winding 25 is connected through a rectifier 33 to the instrument 32 in opposition to the output voltage of the rectifier 31, a potentiometer resistance 34 providing zero adjustment. Changes in permeability of the core 15 as a result of variations in flux density with variations in thickness cause corresponding potential variations in the secondary winding 21, which are measured on the instrument 32. This may be calibrated in terms of thickness or of deviations from standard. In a modification the D.C. winding 19 is omitted and the cylindrical portion 13 is a permanent magnet. A modification is shown in Fig. 5 for measuring the thickness of tubes having a high ratio of wall thickness to diameter. Pole pieces 41, 42 are joined by a laminated yoke 43 having a central aperture through which pass primary and secondary windings, of which one 52 is shown. The uni-directional flux is produced by D.C. windings 45, 46. The pole pieces 41, 42 are shaped to conform with the surface of the tube 44 whose thickness is to be measured.
Patent GB-1358900-A (GB)
Title: Fluid-tight connecting module
IPC: H01R13/52
Filed: 1971-11-23
Abstract: 1358900 Terminal blocks; two-part couplings AIR-LB SA 23 Nov 1971 [24 Nov 1970] 54470/71 Heading H2E A fluid-tight connecting module comprises a socket-carrying body 2 covered by a lid 7 and fitting into a casing 14. Leads 13 pass through holes in a resilient sealing packing 10 which is compressed between the lid 7 and the body 2. In assembly, the lid 7 is first snapped onto the body 2, tongues 7a engaging with slots 5. The body 2 is then snapped into the casing 14, studs 15 engaging with recesses 15a, and the upper edges of the casing retaining tongues 7a in position, as shown, to prevent disengagement of the lid 7 from the body 2. Finally the casing 14 is snapped onto a rail 6, bosses 14a engaging with ribs 6a. Upward force on the lid, in the direction of arrow 16, serves to remove the entire assembly of body, lid and casing from the rail, rather than to dismantle the assembly. The socket cavities are separated by fluid-tight partitions which fit slots in the packing 10. The lid has grooves to receive labels 8. Plugs 12 attached to the leads 13 mate with sockets 1, which are interconnected as required by shunts 4 embedded in filling material 3. Clips 9 bear on the sockets 1 when the plugs 12 are inserted, and have portions 20 to lock the plugs 12 in.
Patent GB-1423889-A (GB)
Title: Catalytic reforming
IPC: C10G35/09
Filed: 1973-11-26
Abstract: 1423889 Reforming naphtha CHEVRON RESEARCH CO 26 Nov 1973 [14 Dec 1972] 54815/73 Heading C5E Naphtha feedstock containing 0À01 to 10 p.p.m. by weight sulphur is contacted with a catalyst comprising platinum and rhenium, on an inorganic refractory support at 800-1200‹ F. and from atmospheric pressure to 1000 p.s.i.g. and a hydrogen-rich gas is separated from the effluent, treated to reduce its hydrogen sulphide content to below 1 p.p.m. sulphur, and recycled to the reforming reaction. The hydrogen sulphide can be removed from the hydrogen - rich gas by contacting with a bed of metal oxide, e.g. of nickel oxide + molybdenum oxide, or of copper oxide + chromium oxide, which can be used as such or on an inert support. In examples a catalyst, containing 0À3% Pt, 0À3% Re, and 0À6-1À2% Cl on alumina, is used to reform a distillate which has been hydrofined to remove sulphur and nitrogen.
Patent GB-1199150-A (GB)
Title: Integrator Circuit
Inventor: BAKER BERNARD STUART
IPC: G06G7/186
Filed: 1966-12-08
Abstract: 1,199,150. Integrator circuits. COURTAULDS Ltd. 8 Dec., 1967 [8 Dec., 1966], No. 55024/66. Heading G4G. [Also in Division H3] An integrator for generating a voltage signal charging at a constant rate for a period immediately succeeding a period of constant value, without a transitional voltage step (Fig. 2, not shown) comprises amplifier A 1  with negative feedback over resistor R 1  and capacitor C 1  to first input 2, with output 1 connected to input 3 of amplifier A 2  whose input 6 receives a preset voltage from potentiometer RV 1  and whose output 4 is connected over resistance R 2  and relay contacts L 1  to capacitor C 2  and second input 5 of A 1 . First input 2 of A 1  is connected over resistance R 4  and relay contacts M 1 , N 1  to earth; and over resistor R 3  and relay contacts L 2  to earth; all relay contacts shown de-energized at which output voltage Eg remains constant and held equal to E 2 , due to the charge on C 2  and feedback over the closed loop comprising A 1 , A 2 . On relay operation to open L 1 , L 2 , the loop is broken but Eg remains constant due to charge on C 2  and the earth connection of input 2 of A 1 . Subsequently, relay operation changes over N 1  and the output E 0  varies linearly until on relay operation to open M 1 , Eg is held at the assumed value, or until all relays are de-energized to return the contacts, when it reverts to E 2 . The output is applicable to control the lateral movement of a clamp in the tensile testing of yarn Specification 1,199,149.
Patent GB-1326771-A (GB)
Title: Cooling equipment for tubular plastic film
IPC: B29C48/10
Filed: 1970-11-19
Abstract: 1326771 Cooling tubular films WINDMOLLER & HOLSCHER 19 Nov 1970 [4 Dec 1969 24 Feb 1970] 55036/70 Headings B5A and B5B Apparatus for cooling tubular plastics film 6 extruded from a blow-head 5 comprises an external air cooling ring 10, mounted between the blow-head and a position where the film has solidified, for directing cooling air through outlet 11 on to the outside of the tubular film, a supply conduit 14 and withdrawal conduit 19 extending axially through the blow-head for passage of internal cooling air, and an annular nozzle 16, 17 at the outlet of the supply pipe 14, the outlet 18 of nozzle 16, 17 being directed on to the interior surface of the film in such a way that the interior and exterior streams of cooling air impinge on the surfaces of the extruded film at substantially the same level, and the size of the outlets of the external ring and internal annular nozzle and the pressures of the air supplied thereto are such that the pressures of internal and exterior cooling air streams are substantially equal. The outlet 11 of the external ring 10 and/or the outlet 18 of the annular nozzle 16, 17 may be slightly inclined towards the die-head orifice. In a preferred embodiment (Fig. 2, not shown) the supply conduit is formed by an annular passage 23 and the withdrawal conduit is a pipe 26 extending therethrough, the annular passage 23 being lined with heat insulating layers 21. The external diameter of a guide ring 24 for the internal cooling air is substantially equal to the diameter of the blow-head orifice.
Patent GB-1270569-A (GB)
Title: Shelves and brackets
IPC: A47B96/02
Filed: 1969-11-11
Abstract: 1,270,569. Shelf brackets. STREATER INDUSTRIES Inc. Nov. 11, 1969 [Nov. 25, l968], No. 55217/69. Heading A4B. A shelf bracket 10 has rear edge hooks 11-13 for selectively engaging slots 31 in an upright support 30 and is provided along its top edge with tabs 14-19 selectively engaged in a set A, B or C of slots 44-48 provided in an inturned flange 43 at the end of a shelf 40, each tab 14-19 comprising in continuation a first, horizontal section 20, an upwardly extending middle section 22, and a second, horizontal section 21 extending away from the body of the bracket. (For Figures see next page)
Patent GB-1401340-A (GB)
Title: Photographic camera
IPC: G03B17/26
Filed: 1972-11-30
Abstract: 1401340 Camera disabling means EASTMAN KODAK CO 30 Nov 1972 [11 Dec 1971] 55356/72 Heading G2A In a camera adapted to house a cartridge containing roll film having one metering perforation per frame, means for preventing double metered film advance and double exposure are disabled in the absence of a cartridge. Fig.1 shows the camera ready for shutter release. On manual depression of an end portion 50 of a shutter release lever 44 with clockwise rotation of lever 44 and a holding arm 64, a ratchet pawl 76 is raised to teeth 78 to lock a film advance slide 22; a high energy lever 84 is released to rotate anti-clockwise to actuate the shutter and withdraw a metering pawl 98 from a ratchet wheel 100 (by contact with a tab 102 of metering lever 96) freeing a film winding gear wheel 20; and a film sensing pawl 104 is raised (by contact of the end 110 of shutter release lever 44 with a tab 108 of pawl 104) from a perforation 16 in a film 14 to allow anti-clockwise rotation of a retainer 118 so maintaining metering lever 96 raised (by tab 122 resting on abutment 128). On release of end portion 50, sensing pawl 104 is lowered to the surface of film 14; and a latch portion 124 latches on holding arm 64 to prevent further operation of end portion 50. On manually pressing in slide 22, high energy lever 84 is rotated in the clockwise direction (by contact with a push member 94 of slide 22) until latched by holding arm 64; holding arm 64 rotates anti-clockwise to free ratchet pawl 76 from teeth 78 and allow slide 22 to return to the right; sensing pawl 104 drops into perforation 107 (after multiple action of slide 22); and sensing pawl 104 and retainer 118 rotate clockwise, allowing lowering of metering pawl to ratchet wheel 100 (preventing further operation of slide 22). In the absence of a film cartridge sensing lever 54 rotates clockwise to raise metering pawl 104 (by contact of an abutment 116 of lever 54 with a tab 114 of pawl 104) and allow anti-clockwise rotation of retainer 118, shutter release lever 44 then being free to be rotated clockwise. A tab 130 on cartridge sensing lever 54 keeps metering lever 96 from ratchet 100.