baber/WOPTO huggingface dataset:
Patent GB-1051105-A (GB)
IPC: G03B21/20
Abstract: 1,051,105. Control systems for space discharge tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 17, 1965 [Sept. 22, 1964], No. 39758/65. Heading H2H. [Also in Division G2] A film projector comprises, as a light source, a high pressure gas- or vapour-filled discharge lamp fed pulsatorily to obtain light flashes, which is provided with two pulse circuits each comprising a pulse capacitor and a controlled pulse rectifier, the pulse circuits each producing substantially identical pulses having a relative phase difference of 180 degrees, each pulse circuit being connected to one phase of a twophase rectifying circuit connected to a supply transformer. The rectifying circuit preferably contains a controlled gate rectifier for each pulse circuit to reduce flicker. Circuit diagrams are given.
Patent GB-1051333-A (GB)
IPC: C08L21/00
Abstract: 1,051,333. Natural rubber-polybutadiene blends. METZELER A.G. July 15, 1963 [July 20, 1962], No. 27908/63. Headings C3P and C3Q. A composition comprising natural rubber. cis-1: 4-polybutadiene and mercaptobenzimidazole as metal inhibitor and ageing resistor is vulcanised in the presence of a nitrogen-containing substance and a compound that yields sulphur and/or less than 1.5 parts of sulphur per 100 parts of rubber to which system mercaptobenzthiazole, benzthiazyl disulphide or tetramethyl thiuram disulphide are added as accelerators. The nitrogen-containing substance is preferably p: p<SP>1</SP>-dibenzoyl-quinone dioxime and the sulphur-yielding substance is preferably 4: 4<SP>1</SP>-dithiodimorpholine.
Patent GB-1052456-A (GB)
IPC: B60H1/24
Abstract: 1,052,456. Vehicle bodies. FORD MOTOR CO. Ltd. Sept. 3, 1964 [Nov. 2, 1963], No. 43343/63. Heading B7B. [Also in Division F4] Air vents 12, Fig. 3, in the rear pillars 13 communicate with low pressure regions of the vehicle exterior by grilles 21. Each vent comprises a passage 15 leading downwardly from the interior opening 16 and the grille 21 and a rearwardly directed scoop 20 shields the vent from passenger view. A flap 22 prevents backdraught through the vent.
Patent GB-1053394-A (GB)
IPC: B60V3/04
Abstract: 1,053,394. Endless track vehicles; air cushion vehicles. SOC. BERTIN & CIE. June 3, 1964 [June 6, 1963], No. 22972/64. Headings B7H and B7K. An endless track vehicle has a gas cushion system which distributes over single endless track 2 part of the weight of the vehicle and of the wheels 1 which have inflatable envelopes such that their flexibility is approximately equal to that of the air cushion system in association with the track. In Fig. 1 the air cushion system comprises gas generators 4 each supplying the inflatable envelope of a wheel through hollow member 7a and a peripheral blowing nozzle 3 directed inwardly of the air cushion. Alternatively the gas cushion system comprises a chamber with a flexible skirt (Fig. 3, not shown) or plenum chambers 3e supplied by injectors connected to gas generator 4c (Fig. 4, not shown). The track is propelled through the engagement of sprockets 1c of the wheels with corresponding depressions in the thickened edges 2c (Fig. 3) or thickened centre of the track or through ridges 1e (Fig. 4) engaging portion 2e of the track.
Patent GB-1225588-A (GB)
IPC: H01J29/07
Filed: 1969-04-24
Abstract: 1,225,588. Glass to metal seals. NIPPON ELECTRIC CO. Ltd. 24 April, 1969 [7 May, 1968], No. 21113/69. Heading C1M. Apparatus for planting metallic pins 18 in the glass flange 17 of a television tube face plate 16, for supporting the shadow mask thereon, and wherein the pins are heatable by infrared radiation and the glass is permeable thereto, comprises supporting means 13 for the face plate 16 driving means 12 within the plate 16 for driving the pins 18 towards the flange 17 and infra-red heating means 11 outside the flange 17 for heating the pins 18 while driven towards the flange 17. Preferably the heating means 11 consists of a source 21 such as a fused quartz halogen lamp with a tungsten filament 22 at the focus F1 of a spheroidal reflector 23 with truncated end 24 adjacent the flange 17 and so positioned that the second focus F2 is just inside the flange 17 on the path of the pin 18. The cup-shaped pin 18 is then heated thereby so that the rim (19) is at its hottest just before reaching the glass and which is melted thereby as the rim is pressed into the glass. The face plate 16 is accurately positioned by supporting means 13 comprising vertical supports 41 and horizontal supports 42 adjacent each corner. The driving means 12 comprises horizontally and radially disposed driving rods 31 with chucks (not shown) for holding the pins 18, the rods being operated by cam follower pins 34 engaging a cam groove formed in a rotatable disc 32. The number of driving rods may be raised and the angle to the flange need not be a right-angle as shown. In a further embodiment, each pin 34 has a separate groove in an oscillating disc.
Patent GB-1226761-A (GB)
IPC: G01R13/34
Filed: 1967-04-17
Abstract: 1,226,761. Cathode-ray tube circuits; transistor amplifier, gating and sawtooth generating circuits. AIM ASSOCIATES CAMBRIDGE Ltd. 10 April, 1968 [17 April, 1967], No. 17546/67. Headings H3T and H4T. In an arrangement for sampling a continuous repetitive waveform at different phase related positions over a plurality of cycles to produce a replica having a lower repetition frequency, the samples are fed to a store and each sample after the first is utilized to modify the previous sample in accordance with the difference between successive samples. As shown in Fig. 1 the continuous repetitive waveform is fed via terminal 1 to a sampling gate 2 in which it is sampled at instants determined by a time base 3 controlled by the input waveform. The time base (described with reference to the block circuit digram of Fig. 2) includes a "fast" sawtooth generator 27, triggered by each cycle of the input waveform and a "slow" sawtooth or staircase generator 29 having a repetition frequency equal to a fraction of that of the input waveform together with a comparator 28 fed with the outputs of both generators and producing a sampling pulse via a "fast" switch 29a and a sampling pulse generator 30 for each Nth cycle of the input waveform which progresses in time, either forwardly or backwardly, over a plurality of cycles of the input waveform. The time base, additionally, produces pulses via distributer 31 which are employed for other synchronizing and switching purposes. In operation the samples are supplied via differential amplifiers 6 and 8, the latter being rendered operative only during the sampling instants by pulses from a generator 9 controlled by the time base 3, and stored in a capacitor Cm. Thus the voltage stored in the latter is equal to the voltage of a sample modified by an "error" voltage equal to the difference between the stored sample and the subsequent sample this "error" voltage being produced by the unbalanced action of the sampling gate 2. The voltage across Cm is then supplied via a non- inverting amplifier 10 and a virtual earth amplifier 11 to an output terminal 15 from which bright-up pulses may be derived for the beam of an oscilloscope the vertical deflection of which is produced by the output of amplifier 10 which is available at terminal 16. The output of amplifier 10 is also fed back via a virtual earth amplifier 13 to a bias network 20 which has outputs connected to the gate 2 and to both inputs of differential amplifier 6 this arrangement operating to ensure that the loop gain for the feed-back signal is much less than unity whilst the gain for an error signal is approximately equal to unity. Details of portions of the time base circuit 3, of the amplifiers and of a sawtooth wave generator are described with reference to Figs. 3 to 7.
Patent GB-1228169-A (GB)
IPC: F16H61/42
Filed: 1967-09-01
Abstract: 1,228,169. Hydrostatic transmission control. JOSEPH LUCAS (INDUSTRIES) Ltd. 28 Aug., 1968 [1 Sept., 1967], No. 40092/67. Headings F2C and F2D. In a hydrostatic transmission for a tractor wherein a swash-plate pump 11 is connected by supply and return ducts 16, 18 to a swash-plate motor 14 and the stroke of the pump is varied from zero to maximum in either forward or reverse under the control of a lever 38, a normally closed by-pass valve 34 is opened to interconnect the ducts 16, 18 when the lever 38 is moved from the zero stroke position shown to a neutral position 38a. The high pressure in the duct 16 (or 18) acts through a shuttle valve 33 on the right hand end of the by-pass valve 34 against the bias of a spring and liquid pressure supplied through a restricted bore in the valve 34. If during operation the pressure in the duct 16 (or 18) exceeds a predetermined value a high pressure relief valve 35 opens to vent the left end of the valve 34 which moves left to interconnect the ducts 16, 18. When the lever 38 is moved to the position 38a it opens a valve 41 to vent the left end of the by-pass valve 34 which moves left to interconnect the ducts 16, 18. Further movement of the lever 38 to the position 38b acts through a cable 45 to open a valve 46 and vent the chamber above a piston 44 whereupon a pin 43 is spring pressed into engagement with teeth 42 on the rotor of the motor 14 which is thus positively braked. The lever 38 and a pedal 39 act through a linkage 37, similar to that described in Specification 1,014,501, and cam plate 31 on control valves 25, 26 of follow-up servo's 20, 23 controlling the strokes of the pump and motor. The control initially increases the pump stroke from zero to a maximum in either forward or reverse and thereafter reduces the motor displacement from a maximum to a predetermined minimum. An input driven make-up pump 27 supplied liquid through a cooler 28, filter 29 and non- return valves 32 to the low pressure duct and also supplies liquid to the servo control through a variable throttle valve 30 which varies the speed of response of the servo system. In Fig. 2 (not shown) the valve 41 is replaced by a valve which is opened either by movement of the lever 38 to the position 38a or by movement of the pedal 39 to its extreme position.
Patent GB-1229176-A (GB)
IPC: F16L33/213
Filed: 1970-03-12
Abstract: 1,229,176. Pipe couplings; pipes. GENERAL MOTORS CORP. 12 March, 1970 [24 March, 1969], No. 11953/70. Headings F2G and F2P. In a hose coupling 10 comprising a spigot 6, a cylindrical sleeve 7 and nut 9, a nylon hose end 5 is inserted in a clearance between the spigot and cylindrical sleeve, and the spigot is expanded to retain the hose end. The spigot 6 is expanded by a tapered mandrel passed through the spigot bore, the cylindrical sleeve 7 and spigot being held by a die. The spigot 6 has a curved tapered surface 17 for abutting a connecting-piece 11, the two parts 6, 11 being drawn together by the nut 9, which also draws the cylindrical sleeve 7 to the spigot 6. The cylindrical sleeve 7 has a number of rectangular cross-section recesses 25, and the spigot has sawtooth profile projections 22 to grip the hose end 5. The cylindrical sleeve 7 also has two notches at its end 19 for hose inspection purposes. The coupling parts are of copper alloy or stainless steel. The hose end has an outer layer of nylon with additives for heat resistance, a polyester braid, and an inner layer of nylon with additives for heat and light resistance.
Patent GB-1229273-A (GB)
IPC: G01N35/00
Filed: 1968-10-28
Abstract: 1,229,273. Automatic analysis. SCIENTIFIC INDUSTRIES Inc. 28 Oct., 1968 [12 Aug., 1968], No. 50948/68. Heading B1X. Apparatus for dispensing liquid samples comprises sample receptacles 12, 12a which may be mounted on rotatable ring 18, strip of material 60 having sample receiving locations 68 spaced along it, means for advancing strip 60 lengthwise to position each location 68 at a sampling station, shifting means 90 for shifting the strip in a direction transverse to its direction of travel to a position where sample can be discharged, optionally by means of air blown through tube 104, on to a location 68 from the receptacle 12a at the sampling position, the shifting means then retracting the strip. Timing and coordinating device 40 controls rotation of ring 18 by motor 34, movement of strip 60, shifting means 90 and air blower 100, and receives signals from photocell devices 44-48, 46-50, to detect an oncoming sample receptacle 12a and provide for slowing then stopping motor 34, and from photocell devices 78-82, 86-88 to detect sample receiving locations 68 and hence provide for slowing and stopping strip 60 with a location 68 at the sampling station. In the automatic analysis apparatus of Fig. 3 (not shown) samples discharged from receptacles (12a) on to absorbent pads (68) on tape (60) are forced through porous tape (112) on to analysis tape (118), which may carry reagent, as the three tapes are pressed together by rollers (126) and drum (128). The tapes are then separated and the analysis tape (118) is treated in zone (132), for example by washing, heating and drying then passes to optical reading device (134).
Patent GB-1231818-A (GB)
IPC: E04H9/14
Filed: 1968-07-30
Abstract: 1,231,818. Tents. DEHN & SOHNE. 30 July, 1968 [12 Aug., 1967; 7 Feb., 1968], No. 36403/68. Heading E1A. A tent is provided with a frame 1 and/or a fabric 3 which forms a Foraday cage electrically conducted to a floor portion in contact with the ground. The frame 1 may be made of aluminium or steel tubes connected together by sockets or sleeves whilst the fabric may contain metal threads or covered by such threads, metal foil or a coating sprayed or brushed thereon. The cover is suspended from the frame by releasable loops 5 of plastics or rubber and an inflatable seat 9 of rubber or plastics is disposed within the tent. For numerous other minor details and modified forms of tents the Specification and remaining drawings (not shown) should be referred to.
Patent GB-1231822-A (GB)
IPC: C08G65/18
Filed: 1968-07-08
Abstract: 1,231,822. Light-sensitive oxetane polymers. FARBWERKE HOECHST A.G. 8 July, 1968 [6 July, 1967], No. 32433/68. Heading C3R. Polyethers which can be cross-linked by light are prepared by polymerizing oxetanes of the formula in which R 1  represents the radical where x is 1 or 2, a benzoyl-benzoyloxy radical, he radical or the radical wherein m is 0 or 1, n is 0 to 4, R 3  is a carbocyclic or heterocyclic aromatic group or when m and n are both zero may be H or CH 3 , R 4  is H, alkyl, alkoxy or halogen, R 5  is Cl or phenyl and R 2  has the same meaning as R 1  or is H, alkyl, alkoxy, aryloxy or halogen. They may be polymerized alone or together with a lightinsensitive oxirane, oxetane or oxolane, and a cationic catalyst is used. Examples of comonomers are propylene and styrene oxides, tetrahydrofuran, 1,4-epoxycyclohexane and 3,3- bis(chloro-, iodo-, cyano- and acetoxy-methyl) oxetanes. Suitable catalysts are BF 3 -etherate, phosphorus pentafluoride and trialkyl-oxonium salts. Epichlorhydrin may be added as initiator. The polymers have molecular weights of about 1500 to 6000. Before cross-linking, the polymers are soluble in a variety of solvents from which films and coatings can be obtained  which are rendered insoluble by light.
Patent GB-1234584-A (GB)
IPC: B22D18/06
Filed: 1968-09-18
Abstract: 1,234,584. Casting processes. MARTIN METALS CO. 18 Sept., 1968 [22 Nov., 1967], No. 44352/68. Heading B3F. [Also in Division C7] Nickel-based chromium containing alloys are poured into a mould at 200‹ F. above their freezing point (liquidus temperature). The mould is preheated such that, just prior to pouring, its temperature at different locations is in the range 100‹ to 350‹ F. between maximum and minimum temperatures and both the maximum and minimum temperatures lying between 400‹ and 1200‹ F. below the alloy freezing point. Casting is preferably effected into a shell mould in a vacuum and the vacuum is maintained until the alloy is frozen.
Patent GB-1238093-A (GB)
IPC: C07F7/18
Filed: 1969-04-11
Abstract: 1,238,093. Gas analysis. MIDLAND SILICONES Ltd. April 13, 1970 [April 11, 1969], No.18780/69. Heading G1B. [Also in Division C3] Organisation compounds, which form a transient deep blue colour when added to methanol containing oxygen and thus can be used for the detection of oxygen, have the general formula where Ar represents the phenylene or diphenylene radical, R an alkyl, alkenyl, alkoxy or aryl radical and R<SP>I</SP> a hydrogen atom, alkyl radical or a R 3 SiCH 2  group.
Patent GB-1250110-A (GB)
IPC: F16B23/00
Filed: 1969-07-10
Abstract: 1,250,110. Spanners. H. HART. 24 June, 1970 [10 July, 1969], No. 34790/69. Heading B3N. [Also in Division F2] A threaded fastening means which prevents unauthorized removal of e.g. a vehicle wheel, comprises a body portion 1 having an internally threaded axial bore and a smooth frusto-conical outer surface 2, and a co-operating cap portion including a cylindrical body 4 with a frustoconical recess 5 in one end thereof. The threaded body 1 is provided with a plurality of axial bores 9 with which pins 8 in the cap co-operate. The body 1 may have an inwardly tapered projection 3 and the cap may have a conventional hexagonal nut-head 6 above a chamfered step 7. The pins 8 may be soldered, welded or held by adhesive in the cap which may together with the threaded body be metal plated, e.g. with chromium. By varying the position of the pins a " key " effect may be produced in different fasteners. In use, the pins on the cap are inserted in the corresponding bores in the nut or bolt head and the whole is  tightened using a spanner on the hexagonal head of the cap, after tightening the cap is removed.
Patent GB-1250239-A (GB)
IPC: A23G3/04
Filed: 1969-03-20
Abstract: 1,250,239. Toffee manufacture. CALLARD & BOWSER Ltd. 17 March, 1970 [20 March, 1969], No. 14695/69. Heading A2B. A method of toffee manufacture comprises the steps of feeding a mixture of toffee ingredients to a closed feeder unit from which water evaporation is prevented, raising the temperature of the mixture during its passage through the closed feeder unit to a temperature at which all the ingredients of the mixture are dissolved, continuously feeding the mixture from the closed feeder unit to an open feeder unit from which water may be evaporated and further increasing the temperature of the mixture during its passage through the open unit to evaporate water and cook the ingredients whilst agitating the mixture during its passage through the open unit. The mixture is agitated by utilising a stirrerscraper which is mounted so as to rotate about a central axis but which has instead of a central axial shaft, two or more spindles arranged parallel to the axis of rotation but spaced from it thus ensuring that the mixture which is in contact with the sides of the open . feeder unit is continuously changed, cooked toffee being obtained from the open feeder unit at a rate equal to the rate of feed of ingredients to the closed feeder unit A suitable stirrer-scraper 17 positioned in an open feeder unit 15, is shown in Fig. 2. The stirrer scraper comprises three spindles 19 carrying inner and outer helical blades 20 and 21. The blades are discontinuous and are arranged in sections and the blades are arranged in such a manner in these sections that there is no forward or backward motion imparted, during rotation of the stirrer-scraper, to the toffee mixture. A weir 25 is provided to control the residence time of the toffee mixture in the trough. A further trough 27, similar to trough 15, may be provided, in which additional flavours may be incorporated in the toffee mixture.
Patent GB-1257579-A (GB)
IPC: C07D317/22
Filed: 1970-04-03
Abstract: 1,257,579. Phenoxyacetaldehyde ethylene acetals. SUMITOMO CHEMICAL CO. Ltd. 3 April, 1970 [7 April, 1969], No. 16022/70. Heading C2C. The invention comprises compounds (1) where m is an integer of 1-5 and n is zero or 1, 2 or 3 and m + n represents an integer from 1 to 5, and their preparation by reacting an alkali phenate with a 2-halomethyl-1,3-dioxolan or by reacting a phenoxyacetaldehyde with ethylene glycol. The compounds are stated to have herbicidal properties and may be used in compositions.
Patent GB-1259106-A (GB)
IPC: G06K15/22
Filed: 1968-02-29
Abstract: 1,259,106. Positioning systems. NATIONAL RESEARCH DEVELOPMENT CORP. 28 Feb., 1969 [29 Feb., 1968], No. 9955/68. Heading G4H. Each digit of an applied digital signal is compared with a position of a movable object 10 (Fig. 1) the outputs of the comparators being sequentially connected to a servomotor 57 driving the member so that the member is positioned under the control of the input signal digits in order of decreasing significance. In the embodiment described tappings of resistive networks 16, 29, 40 in the comparators are each connected under the control of one of the digital input signals to further resistive networks 17, 33, 44 the output tappings from each of which are selected in accordance with the next least significant digital input signal. The input signals to the resistive networks 16, 29, and 40 are derived from sensing heads 12, 28, 35 sensing tracks 11a 11b, 11c, lid moving with the member 10. In the embodiment of Fig. 1 the grating tracks are decimally weighted but weightings of 100 to 1 or, to position a member angularly, 60 to 1 may be used. The selected tapping of network 17 is first connected via stepping switch 54 to both the servomotor 57 (via direction control 56) and a zero detector 59. At zero stepping switch 54 is moved to connect the output of network 33 to the motor, this process being repeated for each decade until a balance has been obtained between the output of a further resistive network 53, selected under the control of the least significant digit and the position of the member, the speed of the motor being reduced at each stage under the control of a stepping switch 62 moved in synchronism with the switch 54. The digital input control may be manual, or the tappings may be selected by relays controlled by punched tape or, if the input is derived from a computer or magnetic tape, the tappings may be selected electronically by metal oxide silicon transistors. To determine the position of the member 10, the motor may alternatively be connected to the sliders of the resistive networks to drive them until zero output signals are derived from each network. A display may be driven in synchronism with the sliders so that at balance the position of the member is indicated digitally.