baber/WOPTO huggingface dataset:
Patent GB-1251734-A (GB)
IPC: B60K20/00
Filed: 1969-10-14
Abstract: 1,251,734. Controlling vehicles. LINDE A.G. 14 Oct., 1969 [14 Oct., 1968], No. 50287/69. Heading B7H. [Also in Division H1] Control apparatus for the electric motor of an electric vehicle comprises two pedals 8, 10 interconnected by coupling 11 such that the depression of one pedal from the neutral position, which operates a retractive switch 21 or 24, results in the raising of the other pedal. The switches 21, 24 are operated by means of rollers 20, 23 engaged in recesses 18, 22 of respective sleeves 5 and 6 to which the levers 7 and 9 are connected. These switches determine the direction of rotation of the motor, whilst voltage control 17, operated by rollers 15 engaging levers 13, 14, controls the voltage applied to the motor. The switches could also be operated by the coupling 11. The pedals may be returned to the neutral position by a further pedal 25 having lateral projections engaging the higher of the two pedal levers. This further pedal may also operate a mechanical brake. A braking circuit may be completed at the neutral position of the pedals. Further, a friction drive may be associated with one or more of the pedals to operate a switch on the return of a depressed pedal to its neutral position so as to provide electrical braking by reversing the flow of motor current. This braking may be proportional to the rate of return to the neutral position, and may cease at the neutral position or a predetermined time later.
Patent GB-1257378-A (GB)
IPC: G04G9/04
Filed: 1969-06-06
Abstract: 1,257,378. Time switches. W. GIERSIEPEN. 6 June, 1969, No. 28822/69. Heading H1N. [Also in Division G3] A rotary switch 16 for controlling the sequential illumination of lamps in a line-indicating apparatus (see Division G3) comprises a rotary member 20 carrying a bridging contact 24 for successively connecting spaced cut-outs 22 to a ring contact 23. The member 20 is driven by the minute shaft 19 of a clock 17 via a clutch 18 which is engaged by pressing a plate 28, which via springs 27 moves the switch 16 along guides 26, means (not shown) being provided for holding the plate 28 in the clutch engaging position. The rotary member 20 may be returned to its starting position by pressing an actuator 29 carrying a pin 30 which engages a cam 31 on the member 20 to rotate it. Contacts 34 through which current is supplied to the contacts 22, 23 are engaged when the plate 28 is pressed to engage the clutch 18.
Patent GB-1264994-A (GB)
IPC: G11B5/706
Filed: 1969-02-18
Abstract: 1,264,994. Magnetic materials. MINNESOTA MINING & MFG. CO. 18 Feb., 1969 [19 Feb., 1968], No. 8802/69. Heading H1H. [Also in Division C1] Iron oxide modified with cobalt oxide is made by forming a suspension or slurry of acicular water - insoluble particles of gamma - Fe 2 O 3 , FeOOH or dehydrated FeOOH either with cobalt hydroxide or cobalt carbonate, or in a solution of a cobalt salt from which a cobalt compound is precipitated on the iron oxide particles; decanting, washing, filtering and drying the particles as necessary; heating the mixture of iron oxide and cobalt compound in an inert atmosphere to a temperature sufficient to decompose the cobalt compound and thereby modify the iron oxide particles with cobalt oxide in an amount corresponding to 0À25-22À4 wt. per cent of cobalt based on the iron oxide. An additional heating step in a reducing atmosphere may be carried out to provide 3-20% by wt. of FeO. When the suspension contains FeOOH or dehydrated FeOOH, additional steps of reducing the cobalt-modified particles to Fe 3 O 4  and then oxidizing to gamma Fe 2 O 3 . The modified particles have, when combined with half their weight of non-magnetizable binder, a coercivity (He) of more than 350 Oersteds in the direction of orientation after physical orientation, and a value of the product of He and the square of the ratio of loss of saturated remanence perpendicular to particle orientation to loss of saturated remanence parallel to particle orientation of at least 2205 after 30 minutes at 150 C. Recording media, e.g. tapes, are made by mixing the magnetic particles with sufficient non-magnetic binder, e.g. polyesterurethane to give He more than 350 Oe. and a remanent magnetization Br exceeding 650 gauss in the direction of particle orientation; coating on to a non-magnetic backing, aligning in a magnetic field and hardening. Such media have a saturated remanence retention greater than 80% after 30 minutes at 150 C. Examples describe the preparation of modified particles by (1) precipitating cobalt hydroxide on acicular gamma-Fe 2 O 3 ; (2) adding cobalt hydroxide particles to an aqueous slurry of gamma-Fe 2 O 3 ; precipitating cobalt carbonate on to gamma-Fe 2 O 3  and precipitating cobalt hydroxide on to acicular FeOOH.
Patent GB-1266168-A (GB)
IPC: C14C3/08
Filed: 1969-08-29
Abstract: 1,266,168. Tanning processes. RICHARD HODGSON & SONS Ltd. Aug.21, 1970 [Aug.29, 1969], No. 43042/69. Heading C6C. A process for the production of a tanning agent comprises condensing an extract of a vegetable tanning material and an aldehyde in the presence of a nitrogenous base and/or a salt thereof, and if necessary in the presence of a sulphiting agent and/or other agent for introducing solubilizing, anionic groups. The extract of a tanning material is preferably of the condensed or hydrolyzable type, specific examples using mimosa or myrabolam extract, and chestnut extract. The aldehyde is preferably an aliphatic aldehyde, particularly formaldehyde or a formaldehyde-yielding compound. The base is preferably ammonia or an organic amine, preferred salts and amines being ammonium chloride, ammonium sulphate or ammonium nitrate, and ethylene diamine, diethylene triamine or piperidine, respectively. In a first example, a myrabolam extract is condensed with formaldehyde in the presence of ammonia and sodium metabisulphite, the molar ratios of these four constituents being 1:10: 6:0À025. In a second example, a mimosa extract is condensed with formaldehyde in the presence of ammonia and sodium bisulphite, the molar ratios being 1:1À2: 1:0À125. In a third example, a chestnut extract is condensed with formaldehyde in the presence of ammonia, the molar ratios of these three constituents being 1: 4:2À3.
Patent GB-1288263-A (GB)
IPC: G01F23/288
Filed: 1969-02-25
Abstract: 1288263 Radiation liquid level gauge V DO TACHOMETER WERKE ADOLF SCHINDLING GmbH 26 Jan 1970 [25 Feb 1969] 10133/69 Heading G1A An apparatus for determining the level of a liquid in a tank comprises an elongate probe consisting of a neutron detector a plurality of sources extending along the length of the probe, the probe in use detecting the intensity of the thermal neutrons reaching the detector from the neutron sources. The sources may be concentric with the detector tube or within it, and may or may not be uniformly distributed. The probe may be curved along its length. The use of a number of probes at a number of points across a shallow tank in for example an aircraft is referred to.
Patent GB-1290354-A (GB)
IPC: B02C13/284
Filed: 1969-12-15
Abstract: 1290354 Hammer mills GENERAL TIRE & RUBBER CO 15 Dec 1969 [3 Jan 1969] 61061/69 Heading B2A To prevent clogging and accumulations of wet materials a hammer mill comprises a housing having a feed opening 72, Fig. 2, and an opposite back wall 12, a rotor 76 having hammers 80, breaker bars 30.. 36 some at least of which are in front of the back wall and at least some of which viz 32 A..D are rotatable, means for rotating the bars, i.e. an arrangement of sprockets and chains driven by an electric motor 42 via torque limiters, e.g. clutches, and a vibrator arrangement 62 associated with the back wall. As described, a floating wall is spaced from and resiliently mounted to the back wall an the vibrator 62 is connected to the floating wall. The feed opening includes the usual chains 74. The vibrator may be electromagnetic, have variable frequency control and operate typically at 60 HZ, or may be mechanically or pneumatically activated. The bars are rotated at speeds between 10 and 50 rpm and adjacent bars may be rotated in opposite directions and at different speeds. In a further embodiment, triangular lobes, e.g. 135A, B Fig. 6, are welded or otherwise joined to the bars. Square or oval lobes can also be used. Alternatively, stationary knives 235, Fig. 7, can be used to scrape the bars.
Patent GB-1295327-A (GB)
IPC: A61C5/66
Filed: 1970-11-09
Abstract: 1295327 Mining dental amalgam &c V MARCKARDT 9 Nov 1970 [7 Nov 1969] 53218/70 Heading A5R [Also in Divisions B1 and F1] A container containing components forming dental preparations which are mixed immediately prior to use comprises a secondary chamber 6 containing one component of the preparation, and one or more primary chambers 5 with rupturable diaphragms 9 and pistons 4 for discharging one or more other components into the secondary chamber. Piston 4 is actuated by an auxiliary piston 3 which first breaks an outer diaphragm 8. When the contents of chamber 5 have been completely discharged a clip 15 engages a groove in piston 3 so that the chamber 5 may be removed with the piston to provide access to the mixture in the secondary chamber. Mixing of the contents is carried out in a vibratory shaker. In another embodiment safety stop is provided to prevent inadvertent discharge of the contents of the primary chambers.
Patent GB-1296443-A (GB)
IPC: B66F9/14
Filed: 1970-04-07
Abstract: 1296443 Masted lift trucks; storage systems; roller conveyers ALLMANNA SVENSKA ELEKTRISKAAB 7 April 1970 [8 April 1969] 16374/70 Headings B8A B8E and B8H Apparatus for transferring loads to and from selected storage racks comprises a lifting carriage 2 which is provided with a laterally extensible load support consisting of an inner part 15 secured to the lifting carriage 2, an intermediate part 18 movable on bearings 42, and an outer part 21 movable on bearings 24. The outer part 21 is provided with a loadengaging member 26 and a rack-engaging member 27 which are movable vertically relative to the part 21 by means of pivoted links actuated by rams, Figs. 5, 6 (not shown). In operation, to transfer to a rack 41 a pallet 40 supported on rollers 25 on the inner part 15, the parts 18, 21 are extended laterally from within the part 15 and the rams are actuated to raise the load-engaging member 26 with rollers 34 to the level of the part 15 and to lower the member 27 on to the rack 41. The rollers 25, 34 are then driven to move the pallet laterally and the member 26 is lowered to deposit the pallet on the rack.
Patent GB-1303351-A (GB)
IPC: H01L23/485
Filed: 1970-02-19
Abstract: 1303351 Semi-conductor diode assemblies MULLARD Ltd 2 April 1970 [19 Feb 1970] 8016/70 Heading H1K A microwave varactor diode assembly of low cut-off frequency and high reverse break down voltages comprises (Fig. 1) envelope A containing a stack B of two series connected diode units C; the envelope comprising an annular ceramic insulator inserted between metal pin 2 and flanged metal end cap 3 bounded to the ceramic. Each diode unit comprises (Fig. 2) three p-n silicon varactor diodes; a wafer 10 bearing n-type epitaxial silicon layer 11 on n-type silicon substrate 12, whose remote surface bears a deposited gold layer 13 as common anode for diode elements (Fig. 4) wherein three spaced h-type regions 14 of layer 11 form p-n junctions 15 with layer 11, below insulating silicon layer 16, and are connected through circular openings by projecting gold cathodes 17. The cathodes and anodes are bounded to gold plated molybdenum plates 20 interconnecting the units into a stack; the cathode plate of which is connected to pin 2 over a gold germanium disc and the anode plate of which is connected to cap 3 over gold wire 5 and flange 4. In manufacture (Figs. 5-8, not shown) an n-type silicon slice with epitaxial silicon layer is oxidized in steam to form an oxide layer in which three circular openings are etched through photolitho masks to expose the epitaxial layer, into which boron is thermally diffused from the trioxide through the openings to form the p-type regions of required characteristics. The borosilicate glass formed during diffusion is etched off, and titanium and gold are vacuum evaporated on to the surface, and a photoresist is deposited therein to allow gold to be electroplated on at the openings to form projecting cathode electrodes, after which the photoresist is dissolved and the unplated titaniumgold layer is etched off. The underside of the slice is mechanically lapped, gold is vacuum evaporated on the exposed surface, and the unit is alloyed to a gold plated molybdenum plate. Two such units form the stack B, with a further plate alloyed to the cathode electrodes by thermo-compression. Plural units of three diodes may be formed on one silicon slice later subdivided. Polarities may be reversed.
Patent GB-1305476-A (GB)
IPC: B60T11/10
Filed: 1970-11-20
Abstract: 1305476 Tractor/trailer brake systems F W PETTIT Ltd 27 Aug 1971 [20 Nov 1970] 55170/70 Addition to 1177082 Heading F2F The parent Specification, especially Fig. 4 thereof, describes an hydraulic brake control arrangement for the brakes of a trailer unit in which fluid from pump 6 is controlled by valve 20 operated by pedal 4 and a manually operated valve 27, 28 diverts fluid to other hydraulic devices on the vehicle and a switch 30 gives an alarm at 32 on failure of pressure. The trailer is connected by flexible coupling 11a, 11b to drive piston 9 which transmits force to a master cylinder 16, 17 feeding the brakes 5. According to the present invention, there is further provided an hydraulic accumulator 61 fed from main pressure line 63 through non-return valve 62, and a manually controlled valve 65 enables this accumulator to be switched on to the trailer cylinder 8 to provide several (diminishing) braking actions. An alarm switch 66 is also connected to the alarm circuit 32, and the fail-safe cylinder, loaded by spring-biased lever 37, is also energized from the accumulator while this is pressurized and still connected. If desired, (Fig. 2, not shown), each brake 5 may be fed from a separate cylinder, both cylinders being operated through a common linkage by the fail-safe system. In a further modification (Fig. 3, not shown) the trailer cylinder 8 has an additional free piston to the left of the piston 9, and normally braking pressure is fed between these pistons to drive the piston 9 to the right. When the manually operated valve 65 is operated, pressure from reservoir 61 is fed to the end of the free piston so that this pushes on the piston 9 to apply the brake as before. Moreover, the trailer brakes may each have a separate cylinder, each with such a free piston in it. In a further modification (Fig. 5, not shown), the operation of the manual valve 65 serves to direct pressure to the fail-safe cylinder 53 and to discharge it to brake the trailer under the action of the fail-safe spring 54.
Patent GB-1308832-A (GB)
Title: Pyridazine derivatives
IPC: C07D401/04
Filed: 1970-07-27
Abstract: 1308832 Pyridazines IMPERIAL CHEMICAL INDUSTRIES Ltd 28 June 1971 [27 July 1970 1 March 1971] 36201/70 and 5664/71 Heading C2C Compounds of the general formula (R<SP>1,2</SP> = C 1-4  alkyl or C 1-3  alkoxy substituted C 2-3  alkyl, or NR<SP>1</SP>R<SP>2</SP> = 5-7 membered ring optionally containing an O atom or being C 1-4  alkoxy substituted; R<SP>3,4</SP> = C 1-6  alkyl (not both methyl) or C 1-6  alkoxy substituted C 2-6  alkyl) and their acid addition salts are prepared by (a) reacting a compound of the formula (X = halogen or R<SP>3</SP>O; Y = halogen) with R<SP>4</SP>OM (M = alkali metal), (b) reacting a compound of the formula with R<SP>1</SP>R<SP>2</SP>NH or (c) reacting a compound of the formula with (R<SP>4</SP>) 3 O.BF 4 , optionally followed in each case by salt formation. The preparation of pyridazine starting materials for each of the above processes and of 3,6 - dihydroxy - 4 - morpholinopyridazine is described. The above compounds are general anaesthetics and sedatives, and may be administered in the form of pharmaceutical or veterinary preparations containing them in association with a carrier.
Patent GB-1308950-A (GB)
Title: Jointing of pipes and cables
IPC: H02G3/06
Filed: 1970-06-19
Abstract: 1308950 Pipe couplings PIRELLI -GENERAL CABLE WORKS Ltd 26 May 1971 [19 June 1970] 29868/70 Heading F2G [Also in Divisions B3 and H2]  In a method of jointing or terminating a fluid (e.g. oil) filled cable sheath 16, e.g. of corrugated A1 tube, a tubular portion 20 of a metal component 22 is inserted with an interference fit into an end portion of the sheath 16, the extreme end 28 of the latter engaging an annular lip 30, which projects axially from a radial flange portion 32 of component 22, so defining a circumferential space 42 from which filling fluid and generated gases are removed by the application of a vacuum source to one or more ducts 34 in flange portion 32 while sheath end 28 and lip 30 are sealingly joined together, as by welding or plumb-wiping. A clearance between tubular portion 20 and cable core 14 permits the flow of fluid, which is, however, partially arrested by a rubber glove 46. For a cable joint, component 22 is sealingly connected to a similar component on a second cable end by means of a tubular joint sleeve 48, which is secured at 50 to flanges 32, as by welding or bolting. For a cable termination; a sleeve or end bell is connected between flange 32 and the termination. The invention is also applicable to the jointing and terminating of fluid carrying metal pipes.
Patent GB-1315651-A (GB)
Title: Hydrographic-survey equipment
IPC: E21B43/01
Filed: 1969-02-14
Abstract: 1315651 Magnetic surveying SMITHS INDUSTRIES Ltd 14 May 1970 [14 Feb 1969] 8076/69 Heading G1N [Also in Division H4] Hydrographic survey equipment comprises a submersible structure on which are mounted a sonar transducer arrangement having a narrow beam transmitting-receiving characteristic, and a magnetometer arranged to give a signal indicative of the magnitude of the resultant of the earth's magnetic field and any local magnetic disturbance to it. The equipment is intended for surveying a sea-bed area where a pipe-line is buried and in use is suspended below a ship, with the sonar beam downwardly directed. The sonar is a conventional pulse-echo type with a chart recorder for echo signals. The transducer arrangement comprises three coplanar elongated transducers arranged in a T formation.
Patent GB-1322158-A (GB)
Title: Method of and apparatus for controlling the dyeing of textile  materials
IPC: D06B23/28
Filed: 1971-09-13
Abstract: 1322158 Dyeing apparatus PIERING TEXTILWERKE AG 13 Sept 1971 42573/71 Heading D1L In a dyeing process (shown diagrammatically in Fig. 1) in which a multicomponent dye treats textiles in a vat 1, the temperature of the dye liquor is maintained constant at a temperature at which one component is absorbed in the textile material, in response to the change in light absorbancy of the dye liquor due to this dye component absorption, and is increased when the absorption of light remains constant, to the temperature at which the next dye component is absorbed. The light absorbency of the dye is measured by a light sourse and photocell at 2 which send a current to a controller 4 consisting of an ammeter and an oscillator coupled thereto which hold a temperature control 5 (having a steam inlet 6 and a cool air line 7) at a constant temperature whilst dye is absorbed, but allow its temperature (and so that of the dye in vat 1) to increase when this no longer happens. When the light absorbancy reaches a low enough (and the photocell current a high enough) value the dye is automatically cooled, the dyeing process having been completed. The ammeter comprises a pointer which moves in accordance with the photocell output, and a further pointer which is moved by a motor to correspond in position to the first (both moving over the same scale) via the oscillator and capacitor elements carried by each pointer, so that when the motor is operating (and so the pointers moving) a circuit maintains a constant dyeing temperature, which is increased when the motor stops. A timing delay may be provided between motor stoppage and temperature increasing.
Patent GB-1330859-A (GB)
Title: Safety catch
IPC: A44B9/18
Filed: 1970-11-03
Abstract: 1330859 Safety pin catches LEACH & GARNER CO 3 Nov 1970 52249/70 Heading A3H A safety-catch for use with a pin-like stem 12 has a housing member 16 with a curved channel 20, a keeper member 25 rotatably mounted in member 16 preferably by means of trunnions in side plates 17 and 18 in member 16 the keeper member 25 having a slot 40 which like channel 20 is located outside and curved about axis 26 of keeper member 25 such that when pin stem 12 enters entrance 44 (Fig. 3) and is pressed down, the keeper member rotates and the pin stem 12 is held fastened in a position 32 "over-centre". Keeper member 25 preferably has a handle 45 for manual use and is also held down (as in Fig. 5) by clothing when fastened. The member 16 is preferably made in one piece with side plates 17 and 18 which fold up around keeper member 25.
Patent GB-1339723-A (GB)
Title: Transfer device for toy vehciles
IPC: A63H21/02
Filed: 1970-01-22
Abstract: 1339723 Toy vehicle transporters METTOY CO Ltd 19 April 1971 [22 Jan 1970] 3180/70 Heading A6S A carriage 13, mounted for transporting free running toy vehicles across a gap between the ends of first and second track lengths 16, 17, has vehicle entrance and exit ends and a door 19 at the exit and door operating means so arranged that upon arrival of the carriage at the second track end the door is automatically opened to allow the vehicle to run from the carriage onto the track. As shown ramps 24 at the second track end 17 directly engage lateral extensions 21 on the door and automatically open the door. The carriage 13 may run on rails beneath it or, as shown, be in the form of a cable car having an end stop 18 arranged to be below the track 16 level when the carriage is adjacent the track. The cable 12 slopes up from the first track 16 to the second track 17 so that the momentum of a vehicle entering the carriage carries it to the track 17, the carriage then returning under gravity. The carriage floor slopes down to the exit door 19 to permit the automatic discharge of vehicles. Guides 15, 22, 23 align the carriage 13 with the track ends. The cable 12 may alternatively slope downwards from the first track 16, a releasable catch being provided at the upper end.
Patent GB-1342763-A (GB)
Title: Diffusion testing and apapratus therefor
IPC: G01N33/48
Filed: 1971-04-16
Abstract: 1342763 Micro-biological testing R SAXHOLM 16 April 1971 9685/71 Addition to 1235686 Heading C6F [Also in Division G1] The results of a plurality of chemical or biological tests carried out at respective locations on or in a diffusion substrate are measured by manually setting an iris or slot to correspond with the reaction zone diameter, the setting of the iris or slot being measured electrically, and producing an electric signal to identify which of the tests is being measured. As shown in Fig. 2, a diffusion substrate carrying a plurality of test zones 3 deposited in accordance with a predetermined pattern is supported in a Petri dish 1, illuminated from below by lamps 7. A corresponding plurality of iris diaphragms 13 manually adjustable by knobs 14 is pivotable about a post 11 into and out of register with the test zones. Index marks 8, 9 and a stop 12 ensure correct registration. Potentiometers (14') Fig. 4 (not shown) convert the iris settings to respective electric signals. In Fig. 5, a single sliding gauge 18 is used for each test in turn, the dish being linked to a rotatable shaft 19 so that a switch 22 selects an appropriate channel to indicate which test zone is being measured. In Fig. 6 (not shown) a modified caliper gauge (25) and a dish angular position encoder (24) are provided.