baber/WOPTO huggingface dataset:
Patent GB-1251103-A (GB)
IPC: C08F10/00
Filed: 1969-02-12
Abstract: 1,251,103. Polyethylene. EASTMAN KODAK GO. 12 Feb., 1969 [12 Feb., 1968], No. 7583/69. Heading C3P. A process for preparing polyethylene of density between 0.923 and 0.929 g:/ml. involves polymerizing ethylene feedstock comprising ethylene containing 0À15-0À40 weight per cent nheptane and 0À15-0À40 volume per cent of impurities viz. methane, ethane, propane, propylene and/or carbon dioxide, at a pressure of at least 1100 atmospheres in a reactor equipped with stirring means, the reactor being separated into top, middle and bottom reaction zones, by introducing the feedstock at a temperature of 20 to 90‹ C. into the upper portion of the top reaction zone and polymerizing at a temperature of 150-170‹ C. using di-isopropyl peroxydicarbonate as a catalyst to form a reaction mixture, passing the reaction mixture to the middle reaction zone and polymerizing at a temperature of 165-180‹ C., and passing the reaction mixture of the middle reaction zone to the bottom reaction zone and polymerizing at a temperature of 200-280‹ C. using ditertiary butyl peroxide, tertiary butyl peroxyisobutyrate or tertiary butyl peroxycrotonate as catalyst. The selection of the bottom reaction zone catalyst determines the density of the polyethylene formed. 'Within the specified reaction ranges, the molecular weight or melt index of the polymer produced can be controlled by varying the ethylene feedstock pressure to the top reaction zone e.g. between 1100 and 1475 atmospheres. Examples disclose the physical properties of the polymers and films made therefrom.
Patent GB-1252510-A (GB)
IPC: G01N30/12
Filed: 1969-12-02
Abstract: 1,252,510. Measuring torque photoelectrically. SUD-AVIATION SOC. NATIONALE DECONSTRUCTIONS AERONAUTIQUES. Dec. 2, 1969 [Dec.9, 1968; Nov. 21, 1969], No. 58787/69. Headings G1A and G1W. A torque measuring arrangement comprises a disc with apertures attached to one shaft which is rigidly attached to a second coaxial shaft, the second shaft being provided with a radial projection which extends across the aperture so that a light beam extending from a fixed source to a fixed opto-electronic detector is separated into two portions. As the shafts rotate the two signals obtained are compared to measure the relative offset between the shafts and thus the transmitted torque. As shown in Fig. 1, a tubular shaft 1 connects driving and driven shafts M, R respectively and is provided with a disc 4 rigidly attached to shaft 1 and provided with apertures 5. A second shaft 7 is secured to one end to shaft 1 by cone coupling 8 and is supported coaxially within shaft 1 by bearing 9. A disc 6 is rigidly attached to shaft 7 and is provided around its periphery with a plurality of radial teeth 12 which are arranged to correspond with apertures 5. The disc 4 is cranked so that the apertures and teeth are in the same plane. A flat radial light beam is provided from a fixed source so that each aperture X, Y is scanned as the shafts rotate and photo-transistor 28 is energized accordingly. As the torque changes the size of apertures X, Y will change so that the duration of signals x, y will be proportional to their widths. For any given scan that speed can be considered constant and thus the torque is proportional to the difference between signals x, y. The circuit shown in Fig. 5 produces a signal at 59 which is a measure of the transmitted torque. Signals from photo-transistor 28 are amplified at 29 and passed to a remote amplifier 34 whose output is partly fed back through pulse clipping Zener diodes 101, 102 and integrator 75 to base 103 of photo-transistor 28 so that the pulses leaving amplifier 34 are correctly shaped and spaced. The pulses leaving amplifier 34 pass through gates 35, 40 to trigger circuits 21, 22 (monostable and bi-stable respectively) which reset the system after the passage of each pair of pulses. The pulse are separated by gate circuit 23 so that line m is positive for signal y and line n is positive for signal x and these signals are integrated by capacitors 47, 49 in unit 27. Further processing by amplifiers 51, 52 which together with voltage divides 53, 54, 55, 56 provides a differential amplifier giving the sum and difference of the integrated signals. The difference value is displayed on an indicator calibrated as torque. To compensate for temperature variation a temperature probe including a thermistor may be inserted in the feedback circuit of the amplifier and the probe disposed near shaft 1.
Patent GB-1253026-A (GB)
IPC: G03D5/06
Filed: 1967-09-08
Abstract: 1,253,026. Photographic processing. HOWSON ALGRAPHY Ltd. Dec. 4, 1968 [Sept. 8, 1967], No.41062/67. Heading G2A. A method of, and apparatus for, processing exposed photographic material 11 using a monobath solution 2 are such that solution is applied to a surface of the material and the so applied solution is agitated whilst in contact with the surfaces by brushes 4. As shown, the solution is applied to a plate 11 by an applicator roller 3 which dips in the solution as the plate moves through the apparatus. Excess solution is removed by squeezee rollers 7, 8. Three other embodiments Figs.2 to 4 (not shown) are described for processing flexible sheets. In the embodiment of Fig. 2, (not shown) the processed sheet (23) is fed round half of a large roller (31) while smaller rollers (32-35) squeeze out excess solution. In the embodiment of Fig.3 (not shown), a cylindrical brush (43) dips into a tank (41) containing solution (42) while the sheet is fed over the upper portion of the brush periphery, hence the brush acts as an applicator as well as an agitator. In the embodiment of Fig. 4 (not shown) the brush (63) also acts as agitator and applicator, and the sheet to be processed travels round three-quarters of the brush periphery, thereby also passing through the processing solution (62). The brushes may be of bristle or replaced by rollers of foamed plastics or cellulose materials. The tank of solution may be heated by a thermostatically controlled infrared heater, or it may be refrigerated. For complete, rapid drying of the developed material, a conveyor exposed to heat may be provided to transport material from the output end of the processing tank.
Patent GB-1257096-A (GB)
IPC: B01D53/50
Filed: 1969-07-28
Abstract: 1,257,096. SO 2  removal and regeneration; H 2 S; COS. WESTVACO CORP. 28 July,. 1969 [13 Aug., 1968 (2)], No. 37854/69. Heading C1A. A carbonaceous adsorbent containing an adsorbate of SO 3  and H 2 SO 4  is regenerated in a process comprising treatment with an "oxidereducing gas" at a temperature sufficient to. reduce the adsorbate to SO 2  and/or elemental sulphur, and then removing the adsorbent. The "oxide-reducing gas" may be H 2 S or COS. The adsorbate is formed by passing a hot O 2 - containing gas stream (which also contains sulphur oxides) over the carbonaceous adsorbent at a temperature sufficient to adsorb the sulphur oxides; the SO 2  being oxidized to SO 3 , the carbon acting as catalyst; if any water is present the adsorbed SO 3  becomes H 2 SO 4 . Any sulphur on the adsorbent after the regeneration step may be removed by reaction with a "sulphurreducing gas" (e.g. H 2 , CO, or reformed natural gas). Preferred temperature ranges are: 250- 570‹ F. for the oxide-reduction; 200-260‹ F. for the adsorption of sulphur oxides; and 800- 1300‹ F. for the sulphur-reduction step. Preferably the adsorption step is carried out in a fluidized bed system; and the product (H 2 S or COS) from the sulphur-reduction step may be used in the oxide-reduction step.
Patent GB-1264552-A (GB)
IPC: C09D167/07
Filed: 1969-05-14
Abstract: 1,264,552. Coating. FORD MOTOR CO. Ltd. 14 May, 1969 [1 July, 1968], No. 24514/ 69. Heading B2E. [Also in Division C3] A substrate is coated by applying to it a film of a paint binder comprising a solution in one or more vinyl or vinylidene monomers of a binder resin which is a polymer containing side-chains of the formula:  (in which Y is a hydrogen atom or methyl group) and which is the reaction product of an acryloyl or methacryloyl halide with a hydrolysed polyvinyl acetate or a hydrolysed copolymer of vinyl acetate with an ethylenically unsaturated monomer; and curing the paint binder by the action of an electron beam. In the Examples zinc phosphate coated steel, glass, wood, paper and aluminium substrates are coated.
Patent GB-1266130-A (GB)
IPC: H05B41/282
Filed: 1970-09-29
Abstract: 1,266,130. Inverting; supply systems for gas discharge lamps. KIRK ELECTRIC A.S. 29 Sept., 1970, No. 46343/70. Headings H2F and H2H. A D.C.-A.C. converter comprises a pair of alternately conductive thyristors or transistors 5, 6 arranged to switch the primaries of two separate transformers 3, 4 across a D.C. supply 1, the secondaries of transformers 3, 4 being connected in series across the load e.g. a discharge lamp 2. A D.C. blocking capacitor 8 may be provided to overcome circuit asymmetry. When one switching device 5, 6 is switched off, the resulting voltage induced in the transformer 3, 4 provides the striking voltage for the tube 3. The invention is applicable for use in a marine buoy.
Patent GB-1266908-A (GB)
IPC: H03F3/343
Filed: 1969-03-27
Abstract: 1,266,908. Transistor amplifying circuits. WESTERN ELECTRIC CO. Inc. 27 March, 1969 [27 March, 1968], No. 15997/69. Heading H3T.  In a class-B transistor amplifier (Fig. 1) the collectors of complementary driver transistors Q1, Q2 are connected to each other, through a  diode D1, and to the bases of power transistors Q3, Q4; and an A.C.-D.C. feedback loop extends from the series connection between Q3, Q4 to the bases of Q1, Q2. This arrangement reduces cross-over distortion, since when the input signal is near zero, the voltage gains of Q1, Q2 are raised by the high input impedances of Q3, Q4. The base-emitter diodes of Q3, Q4 are biased just below their non-linear region. Diode D1 is biased just above its non-linear region, so that a constant voltage is dropped across it. Q3, Q4 may be replaced by highpower NPN transistors Q5, Q6 (Fig. 3, not  shown) each connected in a Darlington pair configuration to one of a complementary pair (Q3, Q4). An extra A.C. feedback loop is provided. In a further arrangement (Fig. 5) complementary transistors Q9, Q10 are included in the Darlington circuits, and the feedback loop extends through a resistive network R10 ... R14 in a preamplifier which also comprises transistors Q7, Q8.
Patent GB-1288701-A (GB)
IPC: C08K5/47
Filed: 1971-04-19
Abstract: 1288701 Bis(benzothiazylsulphene)amides RHONE-POULENC SA 19 April 1971 [30 Jan 1970] 20588/71 Heading C2C A bis(benzothiazylsulphene)amide of general formula in which R represents a hydrocarbon radical is prepared by reacting a compound of general formula with an organic acid anhydride having a structural formula which includes at least one ring, at 35-120‹ C. optionally in the presence of an inert solvent. The compounds may be used as accelerators for the vulcanization of rubber mixtures.
Patent GB-1288928-A (GB)
IPC: B60P1/54
Filed: 1969-11-20
Abstract: 1288928 Portable jib-cranes FRUEHAUF CORP 20 Nov 1969 [16 Jan 1969] 56775/69 Headings B8B and B8E A portable jib crane for attachment to a standardized freight container 10 comprises an elongated jib support 50 arranged vertically in use being supported from a top corner casting 30 by means of pins 70 mounted on a Z-shaped plate 62, 60, 64. The support 50 includes an angle iron member 90 welded to the plate portion 64 and depending therefrom with an anchor plate 100 having a locking member 110 shaped to co-operate with a corner post 34 to secure the bottom of the support 50. A jib 52 is slewably mounted on the plate portion 64 and a hoist 170 is hooked at 172 on to a load support pin 154. Articles, such as drums 180, may thus be transferred by the crane into and out of the container 10.
Patent GB-1290223-A (GB)
IPC: C07D285/135
Filed: 1970-02-26
Abstract: 1290223 Thiadiazolylureas and -thioureas MOBIL OIL CORP 26 Feb 1970 [21 April 1969] 9340/70 Addition to 1195672 Heading C2C The invention comprises compounds of formula wherein R is C 2-12  alkenylthio, C 2-12  alkynylthio, benzylthio (possibly substituted), 2-phenylethylthio, epoxyalkylthio C 1-12  haloalkylthio, C 2-12  haloalkenylthio, cyanoalkylthio, oxocyclohexylthio, carbalkoxyalkylthio, thiocyanatoethylthio, C 3-12  cycloalkylthio (possibly substituted),phenylalkenylthio,arylthio (possibly substituted), acylalkylthio, heteroarylthio, aminoalkylthio, di-(C 1-12  alkyl) aminoalkylthio or aziridinylalkylthio; R 1  is H, C 1-4  alkyl, or C 3-8  cycloalkyl and R 2  is H, aryl or haloaryl, or (up to C 4 ) alkyl, haloalkyl, alkoxy, alkenyl or alkynyl, or R 1 R 2 N form a 3-6 membered ring ; R 3  is H or C 1-6  alkyl and X is O or S. These compounds may be prepared by reacting a compound of the above formula, but containing R 3 NH instead of the R 1 R 2 NC( :X)NR 3  group, with R 1 NCO, CS 2  + R 1 R 2 NH, or R 1 R 2 NCOCl. 5-Allylthio-2-amino- 1,3,4-thiadiazole is prepared from 2-amino-5- mercapto-1,3,4-thiadiazole and allyl bromide. Herbicidal compositions in conventional form comprise compounds of the above formula as active ingredients.
Patent GB-1295839-A (GB)
IPC: H02M7/525
Filed: 1969-02-28
Abstract: 1295839 Inverting WESTINGHOUSE BRAKE & SIGNAL CO Ltd 17 Feb 1970 [28 Feb 1969] 10718/69 Heading H2F In an inverter, triggering pulses for at least two alternately conducting controlled rectifiers 4...8 are derived at a time before the zero of the output voltage by a circuit dependent on the output voltage and on its differential so as to ensure adequate extinction interval. As shown in Fig. 7 an inverter comprising a bridge of thyristors 4... 8 feeds an induction heater winding connected across output terminals B, D. The thyristors are triggered in pairs shortly before the output voltage passes through zero. Resistor 15 and capacitor 14 respectively provide currents dependent on the output voltage and on its differential. Transistor 34 provides pulses corresponding to half cycles of one polarity of the combined current through 14 and 15; these pulses are steered by transistors 37, 38, 41, 44 to appropriate pulse generators 31, 32 feeding the respective pairs of thyristors 4... 8. In Fig. 6 (not shown) a pair of circuits 14, 15 are supplied from a centre tapped secondary winding of a transformer connected across the output terminals B, D, each circuit feeding a respective transistor 34, diode 33 combination. In Fig. 5 (not shown) a common pair of components 14, 15 supplies pulse generators of opposite conductivity type. In Fig. 10 (not shown) resistor 15 is bridged by a pair of Zener diodes and resistors connected across a conventional diode bridge so that the firing angle is dependent on output voltage. In Fig. 8a, components 14, 15 are replaced by an RL combination bridged by a zero passage detector 49. The resistor R may be connected in series with a baretter or the inductor may be made saturable so as to make the conduction angle a function of output voltage. In Fig. 13 (not shown) a current transformer is included on the D.C. side of the inverter so that the conduction angle is also a function of current.
Patent GB-1296609-A (GB)
IPC: B65G17/00
Filed: 1970-12-21
Abstract: 1296609 Workpiece transferring GIDDINGS & LEWIS Inc 21 Dec 1970 [22 Dec 1969] 60580/70 Heading B3B [Also in Division B8] Work holding fixtures 51 freely supported on rollers 35 of endless conveyor chains 17 are momentarily stopped at automatic assembly stations 11, 12 but at stations 14, 15 where a manual operation is performed, the fixtures are positively driven by belts 53, 54 which engage the rollers 35. By adjusting the speed of the belts 53, 54, the speed of rotation of the rollers 35 and hence the speed of the work fixtures at the stations 14, 15 may be adjusted. The chains 17 are adjustably tensioned and are guided by surfaces 40, 41 which engage rollers 34, 32. The belts 53, 54 have toothed driving members. The work fixtures are guided by vertical surfaces 26 and are transferred between the runs of the chains 17 by elevators 13. In a modification, Figs. 8, 9, work fixtures 51 travel in a single horizontal plane and chains 108, 109 have U-shaped yokes 110 for supporting rollers 102, 104 and 105. In Figs. 11, 12 (not shown) these rollers are supported by yokes (117).
Patent GB-1296707-A (GB)
IPC: G08C19/34
Filed: 1969-07-28
Abstract: 1296707 Road vehicle electrical systems JOSEPH LUCAS (INDUSTRIES) Ltd 17 April 1970 [28 July 1969] 37709/69 Heading H2H  An electrical system for a road vehicle comprises a plurality of loads which are individually controlled by a plurality of switches, together with at least one instrument for indicating at least one parameter of the vehicle. A plurality of loads 23a...23e. of a road vehicle' are supplied by the vehicle battery 11 under the control of a plurality of switches 12a ... 12o which are connected in series to the battery positive terminal. The switches are of the type which are spring urged to the positions shown in the Figure. The system also comprises a plurality of feed lines 15-20 which may be connected to the battery 11 in pairs by the operation of a respective-switch 12, operation of a switch 12 also controlling the conduction of a transistor 19. Thus, a load 23 is connected to the battery 11 when a switch 12 is operated by way of the respective pair of feed lines and latching relay 21 together with its contacts 22. Two operations of a switch 12 are necessary to energize and de-energize the respective relay. The system furthermore includes a plurality of instruments 26-29 having resistors 26a-29a connected in series therewith by means of the feed lines 15-20. The resistors are adjustable in accordance with the parameter being indicated by the instruments. The instruments are fed by the battery from the positive terminal by way of a voltage regulator having a contact 24 and an operating winding 24a.
Patent GB-1307336-A (GB)
Title: Herbicides
IPC: C07D217/02
Filed: 1970-07-20
Abstract: 1307336 1,4 - Quinone derivatives SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 16 July 1971 [20 July 1970] 35057/70 Heading C2C Novel 1,4-quinone derivatives of the general formula wherein X is an amino group di-N-substituted by an alkyl or cycloalkyl group and by an acyl group; Y is an amino group mono-N-substituted by an alkyl, acyl-substituted alkyl oralkenyl group: and A, together with the two carbon atoms of the quinone ring to which it is linked, is an optionally alkyl-substituted pyridine ring, are prepared by reacting a compound of the above formula wherein Y is a halogen atom with ammonia or the appropriate primary amine. The novel compounds may form the active ingredient in a novel herbicidal composition comprising a carrier and/or a surface -active agent together with, as active ingredient, at least one compound of the above formula wherein X and Y each represent a halogen atom or an amino group optionally mono- or di-N-substituted by alkyl, acyl-substituted alkyl, acyl, cycloalkyl or by alkenyl groups; and A, together with the two carbon atoms of the quinone ring to which it is linked, represents an optionally alkyl-substituted pyridine ring.
Patent GB-1319044-A (GB)
Title: Pneumatic turbine propulsion unit for vessels
IPC: B63H11/08
Filed: 1972-02-25
Abstract: 1319044 Turbine and pump assembly D. HODGSON 25 Feb 1972 8733/72 Heading FIT The invention relates to an air turbine driven propulsion unit for marine vessels and comprises an outer casing open at both ends and within which a rotor member is rotatably mounted in bearings. The rotor has blades mounted at its periphery and air nozzles are provided whereby air under pressure may be directed on to the blades to drive the rotor, some of the blades being arranged to rotate the rotor in one direction and the other blades to rotate the rotor in the opposite direction. Impeller blades are mounted internally within the rotor which is hollow and open at both ends whereby water is drawn in through one end of the casing and discharged through the other end thereby to propel the vessel either ahead or astern. Coils are provided adjacent the air turbine blades and hot air may be supplied to the coils to prevent freezing also to improve the turbine efficiency.
Patent GB-1319060-A (GB)
Title: Furnaces for heating glass
IPC: C03B5/027
Filed: 1969-12-20
Abstract: 1319060 Homogenizing glass in furnaces ELEMELT Ltd 18 Dec 1970 [20 Dec 1969] 62170/69 Heading C1M [Also in Divisions H2 and H5] In a furnace for heating molten glass particularly for preventing stagnation or inequality of dwell time of the kind comprising a furnace chamber having a bottom wall and an upstanding peripheral wall, upstanding rod-like electrodes are arranged in rows 14-17 defining the lateral boundaries of a plurality of adjacent heating zones in which A.C. passes through the glass between adjacent rows of electrodes, the three-phase supply being supplied via input terminals t 1 , t 2 , t 3 , a transformer arrangement T 1 , T 2 , T 3  and output terminals t 5 , t 6 , t 7 , Fig. 1, to convert the three-phase to two-phase, or via input terminals t 1 , t 2 , t 3 , and N, a transformer arrangement T 4 , T 5 , T 6 , and output terminals t 8 , t 9 , t 10 , t 11 , Fig. 7, to convert from star to delta, the supply source having a neutral pole connected to input terminal N in this embodiment. Embodiments with 3, 5 or 6 rows of electrodes are described, Figs. 4, 5, 6 (not shown). Each heating zone between the electrode rows may have a collector channel 47, 48, 49, leading to an outlet 18, Fig. 7, or a single channel 19 is supplied via transverse channels in the electrode rows, Fig. 1. The furnace has some features of Specification 1,177,070.
Patent GB-1319317-A (GB)
Title: Drive-stroke adjusting apparatus
IPC: B21D43/08
Filed: 1970-06-29
Abstract: 1319317 Feeding strip stock U S INDUSTRIES Inc 29 June 1970 31322/70 Headings B3Q and B3W Fine adjustment of the stroke length of means for feeding strip to a punching, shearing or forming press is achieved by means of a differential gear assembly for rotating an eccentric, connected to a rack for driving the strip feed means, relative to the shaft of a T-bolt mounted in a throw block operatively connected to the crank-shaft of the press. As shown, Fig. 3, a T-bolt 17 is adjustably mounted, by means of adjusting screw 18, in throw plate 10 connected to press crank-shaft 14. An eccentric 32 integral with a hub 33 is rotatable in a housing 28 welded in an opening 27 in a rack 20. The shaft 23 of pinion 22 is drivingly connected to a pair of feed rolls (not shown). Rotatably mounted on the hub 33 is a worm-wheel 77 for driving a differential gear carrier 83, 84. The differential gear assembly comprises parallel shafts 91, (91a) (Figs. 4 and 5, not shown), on which are rotatably mounted gear sleeves 88 (88(a)). A gear 100 on sleeve 88 meshes with a gear 96 fixed to the hub 33 and with a gear 100a on gear sleeves 88a. Gear 100a also meshes with gear 96 on the shaft 19 of the T-bolt 17. During press operation, the gears 95, 96, 100 and 100a continuously rotate to maintain the eccentric 32 in selected angular disposition on the shaft 19. To vary the length of the feed stroke, while the press is running or at rest, the worm-wheel 77 is rotated by a wormgear 69 via shafts 102, 104, 112, 114, (115) and a hand wheel (116), Fig. 6 (not shown). This rotates the gear 96 and hub 33 relative to gear 96 and shaft 19 so as to rotate the eccentric 32 relative to the shaft 19 and thus vary the stroke of the rack 20. An indicator finger (127) on shaft (115) co-operating with a scale, Figs. 6 and 7 (not shown), shows the position and thus the amount of adjustment needed, if any, of the rack relative to the throw block 11. Arrows on the plate (129) carrying the scale indicate the direction of rotation of the hand wheel for lengthening or shortening the feed stroke. Coarse stroke adjustment is provided for by the adjusting screw 18.