baber/WOPTO huggingface dataset:
Patent GB-1486201-A (GB)
Title: Tobacco dryer controller
IPC: A24B3/04
Filed: 1974-09-13
Abstract: 1486201 Automatic control INDUSTRIAL NUCLEONICS CORP 13 Sept 1974 [15 Oct 1973] 40097/74 Heading G3N A tobacco dryer system is controlled by deriving control signals for controlling the heat transfer surfaces of the dryer and the flow-rate of a drying gas through the tobacco. As shown, moist tobacco 11 is fed via a belt weigher 12 to a rotary drum dryer 13, through which flows a countercurrent of drying air from a heat source 22, and the walls of which are heated by steam flow from a source 18. The dried tobacco passes on conveyer 14 to a cooler 15 and subsequently, on a conveyer 16, transferred to a storage bin 17. Transducers 33, 34, 36, sense the weight W1, temperature T1 and moisture M1 of the tobacco being fed to the dryer and the derived signals together with a set point exit temperature signal T2S, and a set point signal OMR, representing moisture of the tobacco leaving the dryer, are fed to a process control computer 31. The computer initially calculates 1) the dryer duty, as a function of W1, M1 and OMR, 2) the heat energy change induced by the dryer as a function of W1, T1, T2S and the specific heat of tobacco CPT, which is derived from a look-up table relating moisture to CPT; and 3) bone dry weight from M and W1. The computer responds to these calculations to derive set point signals for air-flow rate and dryer temperature to optimize dryer performance. Alternatively, the set points can be derived from model equations for the dryer. It is stated that computer 31 can be digital or analogue. The dryer temperature and air-flow set points are modified in dependence on measured values from transducers 37 and 35 respectively. The exit temperature signal T2 from transducer 35 is compared in node 61 with set point T2S and the error modified by a factor K2, relating air-flow to temperature, in a multiplier 62, and added to the computer flow-rate set point in a summator 63. The modified flow-rate set point is used in a P.I.D. control loop 53, 52, 48, 38 for a valve 25, in the conduit 26 from the dryer. The inlet pressure of the air-flow from the source 22 is controlled by a P.I.D. controller 46 responsive to the comparison of a signal from a pressure transducer 44 and a set point P2S.  A moisture signal from the transducer 37 is compared with a moisture set point M3S and modified by a factor K I which is added to the computed dryer temperature set point in a summator 66. The modified set point is used as a reference for a P.I.D. controller 47, 49, 39, 50 for the steam flow from the source 18.
Patent GB-1443702-A (GB)
Title: Alarm systems
IPC: G01S15/52
Filed: 1972-08-30
Abstract: 1443702 Intruder alarms GRANLEY PRODUCTS (LONDON) Ltd 23 Aug 1973 [30 Aug 1972 (2)] 40236/72 and 40237/72 Heading G4N [Also in Division H4] False operations of an ultrasonic Doppler intruder alarm system are minimized by arranging for the alarm to be actuated only if signals corresponding to Doppler cycles persist above a threshold amplitude for a given time. In the Fig. 1 embodiment a unit 11 integrates the Doppler signal and removes any integration component arising from turbulence or high frequency noise. If the integrator output exceeds a threshold value, level detector 16 turns on and the integrator is then reset, via delay 18, unless the Doppler signals are persistently above the threshold. When detector 16 turns on, a timer 23 is started. Oscillator M is operative while detector 16 is on, and its cycles are counted at 19. After a given time period (e.g. 2 minutes) set by timer 23 counter 19 is reset. If, within that period, the count reaches a preset value the alarm, 22, is actuated and the timer 23 is reset. In the Fig. 2 embodiment, timer 45 is started when the Doppler signal amplitude exceeds a threshold set at 36. The number of Doppler cycles exceeding this threshold and occurring within the timed period (2 minutes) is then effectively "counted" by a monostable/integrator combination 37, 38. The integrator is reset at the end of the period. The alarm is actuated if the integrator output reaches a level set at 39, and the timer 43 is then reset.
Patent GB-1469350-A (GB)
Title: Carboxy-phenol-alkylphosphinic acids their esters and process for their preparation
IPC: C07F9/46
Filed: 1974-09-16
Abstract: 1469350 Carboxyphenyl alkyl phosphinic acids and their esters HOECHST AG 16 Sept 1974 [17 Sept 1973] 40287/74 Heading C2P The invention comprises phosphinic compounds of the formula wherein R 1  is C 1 -C 4  alkyl, R 2  and R 3  are the same or different and are H, C 1 -C 12  alkyl, cyclohexyl, or a group of the formula where n is an integer from 1 to 3 and R is H or C 1 -C 4  alkyl. The compounds may be obtained by reacting a compound wherein Hal is halogen, e.g. Cl or Br, and R 4  is C 1 -C 12  alkyl or cyclohexyl, with a phosphonous diester: R 1 -P(OR 5 ) 2  wherein R 5  is C 1 -C 12  alkyl or cyclohexyl, preferably at 100-250 C. and distilling off the halide R 5 Hal formed and optionally converting the product to the corresponding acid or semi-ester, e.g. by hydrolysis with aqueous acid or alkali, by ester splitting with gaseous HCl, or by reaction with phosgene, optionally in the presence of a catalyst comprising a compound containing nitrogen and/or phosphorus, and subsequent hydrolysis of the phosphinic acid chloride formed to form the phosphinic acid. The products may also be esterified or transesterified by treatment with glycols: HO(CH 2 ) n CHR.OH where n and R are as defined above. The anhydrides of the acids may also be prepared. The products can be used as corrosion inhibitors, complexing agents and as comonomers in the production of plastics materials, e.g. terephthalic acid polyesters to which they impart flame-retardant properties and improved dyeability.
Patent GB-1520433-A (GB)
Title: Control of a heating plant having a hot-water boiler
IPC: F24H9/20
Filed: 1975-10-02
Abstract: 1520433 Water heating systems INGENIORFIRMAET CONSTANTIN BRUN AS 2 Oct 1975 [2 Oct 1974] 40363/75 Headings F4A and F4U In a water heating system in which a gas or oil fired boiler 1 delivers water to heat radiators 13 and/or indirectly heat water in a domestic supply tank 10, a boiler water thermostat 5 operates a switch in the electrical supply line to the burner to maintain the boiler water in a selected temperature range (e.g. 60-66 C.); a further switch being connected in series with the boiler thermostat switch 5 with the closure of the further switch energizing a relay 18 to close a relay switch in parallel with the further switch and the relay switch remaining closed at least until the boiler water maximum temperature is reached. In the arrangement shown there are four further switches: an adjustable time switch 16, a switch 17 responsive to a thermostat in the tank 10 to maintain domestic hot water temperature, e.g. 45-50 C., a manual push-button switch 19, and the switch of a minimum thermostat 20. The burner 3 is oil-fired and an oil pump 7 is connected in parallel with switch 5 and burner 3. A switch 21 can isolate the time switch 16 when hot water is required in an "off" period of the switch and a switch 22 isolates both the time switch and the tank thermostat 17. When switch 22 is open the thermostat 22 located in the room most likely to be cooled operates to maintain a minimum heating, e.g. 5-10 C.
Patent GB-1127037-A (GB)
Title: Application for liquid or viscous substances to strip material
Inventor: SIEGERT MANFRED
IPC: H01R12/82
Filed: 1966-09-09
Abstract: 1,127,037. Processing film strips. PENTACON DRESDEN KAMERA-UND KINOWERKE VEB. Sept.9, 1966, No.40388/66. Heading G2A. [Also in Division D1] A film strip 1 is carried round a guide roller 3 and has processing solution applied to it by a roller 5 which dips into a bath 4 of the solution. (The roller 5 may be a disc, so that the solution is applied to a narrow band only of the film, e.g. a sound track. ) Roller 5 is carried by an arm 7 on a pivot 6, and biased by a spring 10 so as to bear against the film strip. Arm 7 has an extension arm 7a which carries a roller 9 eccentrically mounted on arm 7a by pivot 8. In the normal operative position of Fig.1, roller 5 is drawn into contact with film strip 1, while roller 9 lies out of contact with the film. If two lengths of film are connected by a clip 11, which has a greater thickness than the film, the clip, as it passes roller 9, will engage it and rotate it. This causes arm 7, 7a to be pushed against the spring tension, and so roller 5 is drawn away from the film 1. Thus when clip 11 passes the application station, it does not come into contact with roller 5, and so cannot damage it Fig.2, (not shown). After the clip has passed on, roller 9 rotates further, and roller 5 is drawn back into the Fig.1 position again. In the modification of Fig. 3 (not shown), roller 9 has teeth 12 which engage in the perforations of the film strip. In the further modifications of Figs.4-6 (not shown), the roller 9 has a pin or lever which engages with the clip 11.
Patent GB-1025299-A (GB)
Title: Screen separator with vibration drive for grain cleaning
Inventor: PFEIFER EBERHARD
IPC: B02B1/02
Filed: 1964-10-05
Abstract: 1,025,299. Screening apparatus. MUHLENBAU DRESDEN VEB. Oct. 5,1964, No. 40431/64. Heading B2H. All the vibratory screening apparatus for cleaning grain and comprising a number of superposed screens 3, 3<SP>1</SP>, 3<SP>11</SP> adjustable in one direction of inclination and equipped with return plates 6, 6<SP>1</SP>, 6<SP>11</SP>, an inlet 8 for grain to be cleaned and an outlet 7 for cleaned grain, the latter is provided on the grain inlet side of the screening mechanism and the return plate 6<SP>11</SP> below the lowest screen 3<SP>11</SP> extends into the cleaned grain outlet 7. The screen guide frames 4, 4<SP>1</SP>, 4<SP>11</SP> are pivotably mounted on hollow shafts 5, 5<SP>1</SP>, 5<SP>11</SP> and have their inclination adjusted separately or sumultaneously by means of locking devices. The inlet 8 and the outlet 7 are subjected to suction via a dust separator 9 leaving suction connection socket 10 and a dust trap 11 fitted with an air sluice 12. In operation, the coarse impurities not passing through the screens 3, 3<SP>1</SP> are conveyed via channels 14,14<SP>1</SP> to a coarse outlet 15, whereas the finer impurities pass through the screen 3<SP>11</SP> and via the collecting floor 16 into an outlet 17. The cleaned grain is conveyed via the plate 6<SP>11</SP> to the outlet 7. Dust particles in the grain are removed through the separator 9.
Patent GB-906247-A (GB)
Title: Improvements in or relating to units of furniture, especially garden furniture
IPC: A47B85/02
Filed: 1960-11-25
Abstract: 906,247. Combined tables and seats. MAZUR, S. Nov. 25, 1960, No. 40587/60. Class 52 (3). A unit of furniture comprises a combined table top and seat, the table top 1 being mounted on legs 4, 5 by means of screw-threaded bolts 12A so that it may be pivoted between a horizontal position in which the unit forms a table and seat and a substantially vertical one, in which latter case the table top forms a back rest for the seat 2. Means for locking the top in position consist of two arms 13 and 14 hinged respectively to the table top and seat, which are interconnected by a bolt 14A fixed to the arm 14 and passing through a slot 15 in arm 13 so that the arms are relatively slidable and may be secured in position by means of a wing-nut 16 on the bolt 14A. A further embodiment, Fig. 3 (not shown), is described in which the top 1 is mounted upon upward extensions of the rear pair of the legs 3. In this case the locking means consist of two pins each of which passes through a hole in a bracket fixed to the table top into a coincident hole in the table top supports. In either embodiment the table top may be adjusted to and locked in an intermediate position to provide an inclined desk top.
Patent GB-1503260-A (GB)
Title: Manufacture of electrophotoconductive imaging elements
IPC: G03G5/00
Filed: 1976-09-30
Abstract: 1503260 Ion implantation INTERNATIONAL BUSINESS MACHINES CORP 30 Sept 1976 [20 Dec 1975] 40687/76 Heading C7F [Also in Divisions G2 and H1] In the manufacture of an electro-photographic imaging element a raster pattern is produced on the photo-conductive surface of the element by ion implantation of a material which increases the dark discharge speed of the photo-conductive material. The photo-conductive material is amorphous Se, and the ions are of Te or, preferably, As. The pattern is preferably formed on a drum 46 which is rotated and vertically moved such that the ion beam 38 from generator (1), Fig. 1, (not shown), focused by disc electrode 35-37, traces a helical pattern over the drum surface. A spot raster pattern may be produced by use of a rotating shutter.
Patent GB-890804-A (GB)
Title: Improvements in or relating to circuit arrangements for deriving control-voltages corresponding to the peak value of synchronising pulses
IPC: H04N5/53
Filed: 1958-12-17
Abstract: 890,804. Automatic gain control. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 17, 1958 [Dec. 20, 1957], No. 40732/58. Class 40(5). In a television A.G.C. circuit of the "gated" type in which video signals, poled so that the synch. pulses are negative-going are applied from the cathode load resistor 3 of a video amplifier 2 to a gated A.G.C. valve 4, breakthrough of the gating pulses to the cathode circuit of the valve 2 is prevented. Gating pulses are derived from the line flyback and are applied via condenser 5 to the anode of the "gated" valve 4, from which a negativegoing A.G.C. voltage is derived via smoothing network 7, 8, 9. The grid of valve 4 is grounded, video signals being applied to its cathode via resistor R and shunt condenser C which are so dimensioned as to attenuate any transmission of gating pulses to the cathode of valve 2 via the incidental anode to cathode impedance Z of the valve 4. A similar network may be employed (Fig. 2, not shown) where the valve 4 is in groundedcathode connection and video signals are applied to its grid from the anode circuit of the video amplifier 2.
Patent GB-976348-A (GB)
Title: Bearing mounting in a dynamoelectric machine
Inventor: WIGHTMAN LAWRENCE WILLIAM
IPC: H02K5/167
Filed: 1961-11-15
Abstract: 976,348. Bearings. GENERAL ELECTRIC CO. Nov. 15, 1961, No. 40859/61. Heading F2A. [Also in Division H2] The sintered bronze sleeve bearing 23 of a dynamo-electric machine is rigidly supported between end-shield 22 and secondary cup - shaped member 29 when they are stuck together by adhesive 34, and lubricated by lubricant retained in pad 40 housed in cavity 39. One end 25 of the bearing is retained in shield 22 by passing over or staking and the other end 48 fitted tightly into conical portion 36 of the member 29 before the latter is stuck to shield 22 using an adhesive which may be an epoxy resin having a polyamide hardener or curing agent. Two similar cup-shaped end-shield assemblies are used and may be welded together to form the frame of the machine, Fig. 1 (not shown).
Patent GB-912139-A (GB)
Title: A change-over device for variably operable exposure value setting means of photographic cameras
IPC: G03B7/08
Filed: 1959-12-02
Abstract: 912,139. Photographic cameras. AGFA A.G. Dec. 2, 1959 [Dec. 19, 1958; Feb. 18, 1959], No. 41011/59. Class 98 (1). [Also in Group XL (b)] A camera has a device for changing from manual to automatic exposure control comprising a shaft bearing cams which execute the necessary coupling and decoupling. For automatic setting the pointer 68, Fig. 2, is set to "A" on a scale 69 and the rod 46 depressed. An arm 49 frees a pin 37 to allow a spring 40 to rotate the ring 9 and the shutter speed and diaphragm setting rings 4, 5 therewith through couplings 34, 29 and 30, 31. Rotation continues until an arm 39 connected to ling 9 is arrested by light measuring means (not shown) in a position determined by the measured value. Actuation of the camera release rod 61 is prevented by an arm 59 until the same is moved by arm 49 striking a surface 53 near the end of its travel when exposure factor setting is complete. For manual setting pointer 68 is set to " B " in which position a cam 70 releases the slide 51 which is urged by a spring 58 so that arm 59 frees the release and arm 52 prevents actuation of the rod 46. Cams 71 and 72 release levers 73, 74 to engage pins 79, 80 with rachets 32, 33. Rings 4, 5 may then be rotated against springs 35, 25 by finger pieces 17, 18 and are retained in the set positions by pins 79, 80. For flashlight photographs, pointer 68 is set in the position " X " when cam 71 disengages pin 79 from ratchet 32 and a cam 81 rotates ring 4 through a lever 82 to set an appropriate flashlight speed. Pin 80 is engaged with ratchet 33 and the aperture is set manually. Cover plates, Figs. 4-7 (not shown), fixed to or actuated by the shaft 66 prevent access to the flashlight connector except when pointer 68 is in the position " X." Alternatively the connector may be moved from its access hole in the "A" and " B " positions.  Modifications.-In Fig. 3 a setting ring 87 is used to rotate the diaphragm setting rings 5, pin 94 in this case engaging a ratchet on ring 87, and the shutter is always set for " bulb " exposures during manual operation.
Patent GB-897958-A (GB)
Title: Improvements relating to mobile platforms tower wagons and the like
Inventor: PARKER LESLIE RAYMOND
IPC: E06C7/16
Filed: 1959-12-03
Abstract: 897,958. Staging for workmen. ANDERSTON CLYDE (MIDLANDS) Ltd. Nov. 24, 1960 [Dec. 3, 1959], No. 41096/59. Class 20(2) A mobile staging for workmen comprises a frame supporting a platform 21 and moved by means of a wheeled axle 5 driven by a handle 13 at the top of the staging and a shaft 11 and steered by wheels 6 on stub axles 15 connected by an Ackerman linkage 17 and operated by a steering handle 19 at the top of the staging. The driven axle may have brakes. The height of the platform is adjusted by means of hooks 20a each engaging one of a series of slots 1a in each upright 1 of the frame. A step 22 for mounting the staging is normally held clear of the ground by a spring. A tray 27 is provided for tools &c. In a modification, Figs. 6-9 (not shown) the staging comprises a frame constructed similarly to that of Fig. 1 and adjustable telescopically in a second frame mounted on wheels, the control for driving and steering also being telescopic.
Patent GB-1048861-A (GB)
Title: Improvements in or relating to a process for the manufacture of discs or sheets of silica glass
IPC: C03B23/207
Filed: 1963-10-21
Abstract: In the manufacture of discs or sheets of silica glass, particularly of large dimensions, a plurality of transparent silica rods or tubes are formed into a cluster and the ends melted to form two sheets of transparent fused silica which are connected by a cluster of partly fused rods or tubes.  For astronomical mirrors of a desired radius of curvature, the cluster is arranged with the rod ends formed to the desired shape.  For very large sheets or discs of the order of one to several yards in diameter, a number of smaller units, for example square sectioned or hexagonal sectioned prismatic units, may be welded together at the joins between the units.  To hold the rods together during welding of a face, they are placed on a refractory support such as graphite or silica sand and enclosed in a ring of refractory material. The support may be rotated and the face of the rods melted by causing the heat source to describe a spiral outwards from the centre.  The face is then annealed and the opposite face welded similarly.
Patent GB-1183964-A (GB)
Title: Swell Compensator for a Drag Suction Dredger
IPC: E02F9/06
Filed: 1967-09-13
Abstract: 1,183,964. Swell compensators for suction-pipe dredgers. MINERAAL TECHNOLOGISCH INSTITUUT. Sept.13, 1967 [Nov.28, 1966], No.41774/67. Heading G3R. A swell compensator for the suction-pipe of a drag suction dredger, of the type in which the rope between the winch and the pipe passes over a vertically-movable pulley subject to a constant force through a piston, cylinder and compressed air arrangement, is provided with a control system for automatically operating the winch when the pulley is displaced a predetermined amount beyond its normal operating position, such operation returning the pulley to this position. The pulley (K Fig. 1 not shown) carries a plate 1 movable vertically therewith and positioned to actuate switches 2--5 either by physical contact or by magnetic effect if the switches are of the reed type and the plate varies the strength of a magnetic field. Switches 2--5 connect an integrating circuit comprising D.C. amplifier 18, resistor 16 and capacitor 17 to positive and negative D.C. supplies 6, 7 through resistors 8--11, which are chosen so that the outer switches pass higher currents than the inner ones. When the pulley and plate 1 oscillate about the normal median position the output voltage from amplifier 18 oscillates about zero, but should the plate 1 be displaced from this position (due to a change in the depth of the sea bed) a resultant voltage will build up at a rate dependent on the number of switches closed in the displacement direction and on the duration of closure, Fig. 3 (not shown). Each time this resultant voltage exceeds a threshold value, a pulse is produced by one or other of trigger circuits 23, 24, the pulse or a series of pulses being fed to a delay circuit 33 or 34 which produces a continuous correction signal commencing with the leading edge of the (first) pulse and ending a predetermined time after the trailing edge of the (last) pulse, Fig. 4 (not shown), this extension of the correction signal ensuring that the plate is completely returned to the median position. The correction signal controls the winch-driving motor or cable-winding motors through NOR-gates 36 or 37 and amplifiers 38 or 39, the gates 36, 37 being inter-connected to prevent simultaneous operation of the winch winding and unwinding circuits. A further protection circuit 35 prevents winch operation when the apparatus is first switched on.
Patent GB-1507398-A (GB)
Title: Method and apparatus for the pneumatic conveying of milk powder
IPC: B65G53/52
Filed: 1976-10-07
Abstract: 1507398 Suction conveying in batches A ZIMMERMANN [trading as AZO-MASCHINENFABRIK ADOLF ZIMMERMANN] 7 Oct 1976 41796/76 Heading B8A Particulate material, such as milk powder, sensitive to mechanical stress, as conveyed in batches by suction along a line containing a ventilating valve operated at intervals to form the batches.
Patent GB-1479383-A (GB)
Title: Process for the preparation of 8-hydroxy-quinoline
IPC: C07D215/26
Filed: 1975-10-13
Abstract: 1479383 8-Hydroxyquinoline PRODUITS CHIMIQUES UGINE KUHLMANN 13 Oct 1975 [14 Oct 1974] 41864/75 Heading C2C A process for the preparation of 8-hydroxyquinoline comprises adding o-nitrophenol dissolved in acrolein or a derivative thereof to a mineral acid solution or mineral acid/organic acid solution of o-aminophenol at a temperature from 100‹ to 110‹ C. A suitable acrolein derivative is allylidene acetate and the acid solvent is suitably hydrochloric acid alone or in admixture with acetic acid.
Patent GB-875548-A (GB)
Title: Improvement to fuel oils
IPC: C10L1/26
Filed: 1959-12-10
Abstract: Fuel oil, e.g. gas oil, domestic fuel oils, light and heavy fuel oils, contains as an antismoke additive a minor proportion, usually 0.005-5%, preferably 0.05%-1%, by weight of the fuel oil of a compound obtained by reacting ethylene oxide with a compound of formula <FORM:0875548/III/1> wherein R1 and R11 are alkyl radicals containing 2-20, preferably 8-14, carbon atoms in the alkyl chain.  A preferred compound is the one obtained by reacting dilaurylphosphoric acid with 6 molecular proportions of ethylene oxide.