baber/WOPTO huggingface dataset:
Patent GB-1297739-A (GB)
IPC: A61J3/07
Filed: 1971-04-19
Abstract: 1297739 Dip-moulding capsules PARKE DAVIS & CO 19 April 1971 [23 March 1970] 24922/71 Heading B5A [Also in Division G3] Capsule dip-moulding apparatus comprises a tank of aqueous gel solution 11 kept in circulation by being continuously supplied from below with further solution from a reservoir tank 12, the viscosity of the solution being corrected if excessive change takes place by measuring such change and utilizing this measurement to alter the mean liquid level, and hence evaporative exposure, by altering the mean position of a pair probes 20, 21, which sense the level in the reservoir tank and maintain it between upper and lower limits by effecting the introduction of fresh solution from a supply tank 16. Control of solution supply is effected by a relay 32 having an upper winding 33 energized from supply 31 so that flux is established in the closed iron path. The valve 18 is normally open so that solution is fed from the supply tank to the reservoir tank. When the solution level reaches the upper probe 21 it completes a circuit for the second relay winding 34, the current induced in this serving to buck the flux through the limb of the core on which it is wound to divert it through the armature 35, closing the contacts 37 and 38 thus holding on the armature and closing the valve 18 to stop further supply of solution. When the level drops below the lower probe 20, the circuit of the winding 34 is broken and the armature is released. To control viscosity, solution is drawn off through line 42 through a viscometer 40 and returned via 43. The viscometer provides a continuous reading to a controller recorder 45, which gives a written record, and is set to make plus or minus adjustments, if the viscosity departs from a narrow predetermined range, by means of signals to a motor 25 which raises or lowers the probe supporting means 22 through a link 23, 24 which translates angular movement to linear movement. A timer 48 transmits the controller signals to the motor in small increments of time, instead of continuously, to slow down the response of the system to viscosity changes. The resorvoil tank 12 is contained in a water jacket 13 to maintain uniform temperature. The Specification states that floatable means to operate the valve 18 and maintain liquid level could be used in place of the pair of probes, but no details are given.
Patent GB-1297972-A (GB)
IPC: C08J7/043
Filed: 1969-11-20
Abstract: 1297972 Coating by vapour deposition CARL-ZEISS-STIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 20 Nov 1969 [20 Nov 1968] 56741/69 Heading C7F An article of e.g. plastics or glass is coated by exposing it simultaneously to the vapour of a polymerizable organic compound e.g. methyl methacrylate or styrene at a partial pressure of 10<SP>-4</SP> to 10<SP>-2</SP> mm. Hg and to the vapour of an inorganic compound. The compounds may be vaporised by electron bombardment of sputtering. The inorganic compound may be glasses, MgF 2 , ThF 4 , SiO 2  or silicates and a metal may be added to the inorganic compound. A vaporized catalyst may be present, e.g. benzoin. The organic compound vapour may be introduced into the chamber through a throttle valve. The polymerisation can be assisted during or after vapourisation by oxygen formed by a glow discharge or ultra-violet radiation.
Patent GB-1305214-A (GB)
IPC: G01N33/04
Filed: 1970-10-28
Abstract: 1305214 Photo-electric testing LATVIISKY NAUCHNO-ISSLEDOVATELSKY INSTITUT ZHIVOTNOVODSTVA I VETERNARII 28 Oct 1970 51114/70 Heading G1A The fat content of milk is measured in an arrangement, Fig.1, where it flows down a channel 9 formed between a pair of optical filters 10 in the path of radiation from a source 1 directed by a mirror 2 on to an infra-red detector 6 and wherein the cross-section of the channel 9 may be varied by moving longitudinally by screwthread the sleeve 5b defining part of the radiation path. The detector is housed in a temperature controlled chamber 7 and the channel 5 is coated with a compound to absorb internally incident infra-red rays. Suitable wavelengths passed by the filters are exemplified.
Patent GB-1306317-A (GB)
IPC: A47D13/04
Filed: 1970-10-05
Abstract: 1306317 Releasable fastenings for exercising apparatus CINDICO Ltd 23 Sept 1971 [5 Oct 1970] 44322/71 Divided out of 1303099 Heading A6M [Also in Division E2] A separable coupling comprises a hook 5 having its free end parallel to its shank and being provided with a cylindrical portion 6 to facilitate attachment to a bar 10. The hook is engagable with a bar 4 supported between side plates 2, 3 of a member adapted for connection with a resilient suspender, the space between the bar 4 and the body 1 of the member being such as to allow passage of the free end of the hook 5 but to prevent disengagement of the hook when in the "in use" position shown in Fig. 5. The coupling is adapted for use with the baby exercising device described in Specification 1303099, the resilient suspender being in the form of two elastic rings. Each side member 2, 3 is engaged with a respective ring by passing the ring down channel 8, round the curved bottom of the side member, and back up channel 9, (see broken lines in Fig. 5). The coupling may be moulded in plastics material.
Patent GB-1312296-A (GB)
Title: Air land or water craft
IPC: B60V1/22
Filed: 1970-05-14
Abstract: 1312296 Air, land or water craft AKADEMIE DER WISSENSCHAFTEN DER DDR 14 May 1970 23357/70 Headings B7A B7G and B7V  An air, sea or land vehicle has a body 1 of drop-shape aerofoil in longitudinal cross-section, Fig. 1, and is provided with undulating wave generators 2 beyond the trailing end of the body and rotatable undulating wave generators 4 before the leading end and rotatable about a transverse axis. Two trailing wave generators each include drive means 5 rotating four blades and also include static wave levellers 3. Two leading wave generators 4 each have similar drive means 6 and rotating blades 4 with the body 1 acting as a wave leveller. Rudders 11 on fins 10 and elevators 8 on stabilizers 7 control the craft in flight. By varying the angle of attack of the blades, lift variation and hovering manoeuvres are performed. In another embodiment (Fig. 3, not shown) there are nacelles (12) on each side of the body having portholes and front rudders are provided. The body may be made buoyant by the provision of gas compartments.
Patent GB-1313634-A (GB)
Title: Sleeved metal articles
IPC: B23P11/02
Filed: 1972-01-21
Abstract: 1313634 Jointing; making piston-rods H & H BISHOP Ltd 21 Jan 1972 2961/72 Headings B3A and B3V A close-fitting sleeve is assembled on a core by turning annular grooves in the outside of the core and the inside of the sleeve, inserting sealing rings in the grooves, fitting the sleeve over the core so that the rings pass each other, and directing lubricant through a radial passage to the interface of the core and sleeve between the rings to facilitate sliding of the sleeve the rest of the way on the core. The method may be applied to reconditioned or composite pistonrods and to pulleys and gears on shafts. The core 1 of a piston-rod is formed with a shoulder (2), Fig. 1 (not shown), which may be provided by turning down a worn piston-rod. Axial and radial passages 5, 4 are provided through which lubricant is supplied under pressure after the core has been pressed into the sleeve far enough for the rings 9, 13 to pass each other. The lubricant acts on the rings to drive the sleeve the rest of the way until the lubricant escapes through a vent hole (17), Fig. 3 (not shown), in the sleeve. A strengthening collar 18 is then cut away and the outside of the sleeve ground to size. The lubricant supply may be to either end of the core or to the sleeve, which may have a reinforcing collar at the supply point, Fig. 7 (not shown). The sleeve may be secured by welding or by a nut on the core.
Patent GB-1317039-A (GB)
Title: Push chair adapted for use also as a vehicle seat
IPC: B60N2/28
Filed: 1970-12-22
Abstract: 1317039 Push chairs G E RAYNOR 22 Dec 1970 60966/70 Heading B7B A push-chair has retractable handles 36 which are hooked-shaped to fit round the back 50 of a vehicle passenger seat 51. The push chair has a body 20 preferably of unitary construction of plastics or metal including a bottom 21, front wall 22, side walls 23, and a rear wall 24. A hollow protuberance 29 houses a wheel 31. The handles 36 retract into tubular members 35. Conical members 41 Fig. 8, fitted on the ends of the handles have meshing teeth 42 to provide synchronous rotation of the handles 36. The handles are maintained in adjusted position by a detent (55) Fig. 9 (not shown), engaging a block (72) connected to an operating rod (62). In a modification, Figs. 10 and 11 (not shown), a pair of inclined wheels (85) are provided with a frame (82) mounted on a pivot (80). In a further modification, wheels (92) Fig. 12, (not shown), are spaced apart on an axle (90).
Patent GB-1317565-A (GB)
Title: Rotary drive systems
IPC: G11B15/20
Filed: 1969-09-25
Abstract: 1317565 Feeding record tapes EMI Ltd 14 Sept 1970 [25 Sept 1969] 47157/69 Heading G5R [Also in Division H2] A transport system for a magnetic tape recorder comprises a capstan 1 coupled to a stepping motor 2 which operates stepwise in the record mode and synchronously in the playback mode. During the record mode, each of a pair of square waves, which are relatively displaced in phase by 90 degrees, is fed to a respective one of the field coils from a generator 5. A second input circuit for the motor comprises a waveform generator 7 producing two stepped sine waves relatively displaced in phase by 90 degrees, each of the sine waves being fed to a respective field coil in the playback mode. The generator 7 comprises a clock pulse generator 9 connected to a counter 11 which has outputs connected to summing circuits 13, 15, providing the respective stepped sine waves. The clock frequency determines the tape speed. A push button 10 is depressed to stop the tape during playback, the counter remaining in the state obtaining at the last pulse from the clock generator whereby the motor stops quickly. In the arrangement of Fig. 6, the motor is supplied only from the generator 7 to operate synchronously during both the recording and playback operations. The control circuits 31, connected to receive pulses read off the tape by a magnetic head 30, are adapted to recognize a start pulse preceding an information word recorded on the tape, to count the number of information pulses following the start pulse, and to stop the waveform generator when the number of pulses counted equals the number of bits contained in the information word, the circuits 31 controlling the button 10 to disconnect members 9, 11. If it is required to stop the tape during recording, the button 10 is operated to disconnect members 9, 11 and so leave the sine wave "frozen" in the state corresponding to such operation. Reconnection of members 9, 11, after operation of button 10 by circuits 31 during playback, can be effected by operation of the button or the logic level.
Patent GB-1318781-A (GB)
Title: Polymeric quaternary ammonium compounds
IPC: C08F8/00
Filed: 1970-03-17
Abstract: 1318781 Rendering textiles antistatic IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [17 March 1970] 12699/70 Heading DIP [Also in Division C3]  Textile materials such as fibres, filaments and woven fabrics made of synthetic polymeric materials are rendered antistatic by treating with polymeric quaternary ammonium compounds comprising a polymer, or copolymer with up to 80 mole per cent of a non-nitrogenous unsaturated compound, of a t. aminoalkyl acrylate or methacrylate, at least 90 per cent of the t. amino groups of which are quaternised and at least 1 per cent of the quaternised groups having the formula: -N<SP>+</SP>R 1 R 2 R 3 X<SP>-</SP> any remainder having the formula -N<SP>+</SP>R 2 R 3 R 4 X<SP>-</SP> where R 1  is -CH 2  CH(OH)CH 2 hal or HOCH 2 CHCH 2 hal and R 2 , R 3  and R 4  are C 1-3  alkyl or R 2  and R 3  form with the nitrogen atom a heterocyclic system containing not more than 6 carbon atoms, and X is an inorganic anion. The synthetic polymeric material may be polyhexamethylene adipamide, polycaprolactam, polyethylene terephthalate or an acrylonitrile polymer, and the articles may be impregnated, dipped, brushed or sprayed with an aqueous solution of the compound and heated to at least 120‹C, or to at least 60‹C in the presence of an acidfixing substance, e.g. sodium carbonate, bicarbonate, hydroxide or borate. Examples describe making polyamide woven fabrics antistatic by impregnating with aqueous solutions of dimethylaminoethyl methacrylate/styrene copolymers quaternised with methyl chloride and epichlorohydrin in the presence of hydrogen chloride, the solution optionally containing (3) sodium bicarbonate, and heating.
Patent GB-1321073-A (GB)
Title: Acoustic attenuators
IPC: F01N13/00
Filed: 1970-06-18
Abstract: 1321073 Gas turbine engines; acoustic attenuators DEFENCE SECRETARY OF STATE FOR 11 June 1971 [18 June 1970] 29531/70 Heading F1J [Also in Division F2] A gas turbine engine acoustic attenuator comprises an acoustic panel which includes at least a porous facing layer through which a variable flow of air is passed, the impedance of the acoustic panel being varied by varying the supply of air through the porous layer. One such acoustic panel comprises an impervious backing layer 30, a number of channels 32 defined by dividers 34, and a porous facing layer 36. In order to vary the impedance of the panel air is pumped along the channels 32 and through the apertures 38 in the facing layer, the mass flow of air depending upon the particular engine conditions for which the panel is being tuned. The panel may alternatively be of the honeycomb type providing there is communication between adjacent cells.
Patent GB-1330325-A (GB)
Title: Colour electrophotography
IPC: G03G13/01
Filed: 1970-12-09
Abstract: 1330325 Mosaic photo-conductive material ILFORD Ltd 12 Jan 1972 [9 Dec 1970] 58511/70 Heading G2H In the reproduction of a coloured original by exposing a charged mosaic photo-conductive material to light through a negative of the original, developing the non-light struck areas with white particle-repellant or pan-sensitized toner and developing the light struck areas by recharging, uniformly exposing to one complementary colour and developing with toner of that complementary colour, the recharging, exposing and developing steps being repeated for the other complementary colours, the complementary colour toners except optionally the last are of the type which prevents superimposed deposition. Examples of suitable toners are given.
Patent GB-1335740-A (GB)
Title: Sulphurization of triisobutylene
IPC: C10M169/00
Filed: 1971-11-27
Abstract: 1335740 Sulphurized tri-isobutylene TEXACO DEVELOPMENT CORP 27 Nov 1971 55149/71 Heading C2C [Also in Division C5] A process for preparing a sulphurized triisobutylene extreme pressure additive for lube oils, which has a reduced corrosivity to copper, comprises reacting tri-isobutylene with sulphur at 360-500‹ F. and a pressure between 0 and 100 p.s.i.g. but rising above 15 p.s.i.g. during at least part of the reaction period utilizing a mole ratio of tri-isobutylene to sulphur of 1 : 5 to 1 : 2À5, while blowing a gas inert to the reaction through the reaction mixture for at least part of the reaction period, and throughout the reaction period when the pressure exceeds 15 p.s.i.g., and continuing the reaction until the amount of free sulphur is less than 0À3 wt. per cent and recovering the sulphurized tri-isobutylene from the reaction mixture. The product contains principally 4-neopentyl-5- tertiary butyl-1, 2-dithiole-3-thione together with minor amounts of organic sulphides, e.g. polysulphides and residual mercaptans.
Patent GB-1342479-A (GB)
Title: Hologram records
IPC: H04N5/84
Filed: 1970-12-03
Abstract: 1342479 Flexible hologram record HOLOTRON CORP 3 Dec 1970 [11 Dec 1969 (2)] 38640/73 Divided out of 1342476 Heading G2J A film carries holographic information in a series of frames, each frame touching those on either side and each frame carrying complete index information, or a distinct piece of colour information such that both luminence and colour information is present. The luminence and colour frames may be in side-by-side relationship arranged in two rows.
Patent GB-1344571-A (GB)
Title: Reflex photographic cameras
IPC: G03B7/099
Filed: 1972-02-03
Abstract: 1344571 Reflex camera with exposure measuring device PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 3 Feb 1972 5202/72 Addition to 1281816 Heading G2A A reflex camera has a photo-electric measuring device in which the light losses are minimised comprising a light guide 4 having one surface integral and parallel with a partially reflective reflex mirror 2 whereby incident light is transmitted through the mirror and reflected out of the light path on to photo-cell 8. The light guide has a first reflecting surface 5 on to which a light flux refracted through the mirror is directed and reflected on to second surface 6 lying at 45 degrees to the axis of the first surface 5. The light flux reflected from the second surface is subsequently total internally reflected towards exit surface 7, the guide being conically formed in this region so as to focus the flux on adjacent photo-cell 8. A further light guide 9 may be placed in front of the photo-cell. At least two further reflecting surfaces may be provided parallel to the first reflecting surface to assist light transmission through the guide Figs.2 and 3 (not shown).
Patent GB-1345412-A (GB)
Title: Electrical alarm systems
IPC: G08B19/00
Filed: 1972-01-31
Abstract: 1345412 Alarm systems N W LEWIS 31 Jan 1972 [4 Feb 1971] 3870/71 Heading G4N An alarm system comprise a loop including a rectifier 4 and sensing contacts 3, 5, a first relay 14, normally energized so as to respond to open circuiting of the loop and further relay 11, normally de-energized so as to respond to short circuiting of the rectifier 4. As described, sensing switches 3, 5 may be operated by opening a window or drawer, or by pressure on a carpet and may be magnetically-operated reed units. Alternatively, the switches may be heat- or light-responsive. With switch 6 in the "Normal" position shown, relay 11 is energized from transformer 7 via rectifiers 4 and 9, but becomes released by the opening of series contacts 3. Relay 14 is energized via rectifier 12 if any of the shunt contacts 5 is closed. The release of relay 11 or energization of relay 14 energizes relay 23 to operate alarm 27. The alarm 27  continues until reset by switch 6, which may be operated by a key or combination. A 30 sec. delay may be included to allow authorized resetting of a burglar alarm. Modifications.-Rectifiers 9 and 28 may be omitted if polarized relays are used. Relays 11 and 14 may be replaced by thyristors operating in conjunction with integrated logic circuits. The loop may contain chokes or capacitors, the impedance of which changes in response to the proximity of an intruder. Multiple loop systems.-In Fig. 2 (not shown), a pair of loops similar to that shown in Fig. 1 are connected in series with a single rectifier. Each loop has a three-position control switch providing "alert", "dormant" and "reset" facilities.
Patent GB-1345873-A (GB)
Title: Stator assemblies for dynamo-electric machines
IPC: H02K3/18
Filed: 1970-07-18
Abstract: 1345873 Coils for dynamo electric machines LUCAS ELECTRICAL CO Ltd 1 July 1971 [18 July 1970] 34958/70 Heading H2A A stator assembly comprises a yoke having a plurality of polepieces on each of which is mounted a winding 11 comprising a plurality of convolutions of metal foil strip 12, adjacent convolutions of the strip being separated by a layer of insulating material, the insulating material projecting from the face of the winding adjacent the yoke so as to insulate the winding from the yoke The winding disclosed comprises aluminium foil interleaved with melamine strip 13. When the winding is mounted on the polepiece, the ends 13a of the melamine strip bend over to form a layer of insulation between the winding and the yoke. The melamine strip preferably also projects beyond the opposite side of the aluminium strip so as to insulate the winding turns from a connecting piece 15 electrically connected to the inner end of the aluminium foil.
Patent GB-1352287-A (GB)
Title: Fluorination catalyst
IPC: C07C17/20
Filed: 1971-04-19
Abstract: 1352287 Catalyst composition STAUFFER CHEMICAL CO 19 April 1971 [26 March 1970] 35385/72 Divided out of 1346905 Heading B1E A catalyst composition consists of a bismuth III salt which is the nitrate, chloride, fluoride, sulphate or phosphate impregnated on activated alumina, the composition containing at least 5% wt. bismuth. In the Example alumina of specified and sorptive capacity is impregnated with bismuth nitrate. The composition which is used in fluorination is pretreated with the hydrogen fluoride-containing reactant stream.
Patent GB-1353411-A (GB)
Title: Ground fault protective system having grounded neutral protection
IPC: H02H3/33
Filed: 1971-07-23
Abstract: 1353411 Protective arrangements RUCKER CO 23 July 1971 34636/71 Heading H2K An arrangement for preventing a differential earth fault protective device 10, 11 being rendered inoperable when the earthed neutral N of a protected system L1, L2, N develops a remote earth fault, comprises means 12 for generating a voltage at a frequency higher than the frequency of the protected system and means 24 for inducing that voltage on the,neutral conductor N so as to cause, in the event of the remote earth fault, current of the higher frequency to flow in the neutral conductor resulting in the detection of an unbalanced condition by the device 10, 11. This device comprises a differential transformer 10 which through a unit 11 trips a circuit-breaker 18, 19. The higher frequency may be produced by a pulse generator comprising a diac 21, a capacitor 23 and a charging resistor energized by a bridge rectifier 26 ... 29. The diac is connected to a primary winding 31 of a transformer having the neutral conductor N as a single turn secondary winding, though in a further arrangement, Fig. 2 (not shown), the transformer core may be linked by all the supply conductors so that response can be obtained should a line conductor be shorted to an unprotected conductor. Reference is also made to the use of other types of pulse generator, e.g. using a silicon controlled rectifier, a four layer diode, a unilateral or bilateral switch, or a transistor multivibrator.
Patent GB-1354479-A (GB)
Title: Method of and apparatus for processing a sheet having a surface  provided with a light sensitive coating
IPC: G03D7/00
Filed: 1970-05-04
Abstract: 1354479 Photographic development J B YOUNG 4 May 1971 [4 May 1970] 21292/70 Heading G2X In the ammonia development of a print from a flimsy transparent sheet 17, coated with Diazo, flexible walled bottle 10 is squeezed to force the contained ammonia solution through nozzles 25 to form a film of ammonia solution on the inside surface of the rear wall of chamber 20 from which ammonia gas disassociates to treat sheet 17. The solution is returned to bottle 10 via one way valve 11 for reuse.