baber/WOPTO huggingface dataset:
Patent GB-1250406-A (GB)
IPC: H01F19/00
Filed: 1969-10-31
Abstract: 1,250,406. Controlled non-linear inductors. NATIONAL AERONAUTICS & SPACE ADMINISTRATION. 31 Oct., 1969 [4 Nov., 1968], No. 53575/69. Heading H3B. [Also in Divisions H1 and H2]  A two-part magnetic core 100 for use in an inverter circuit employs two similar saturable cores 10, 20, which may be of oriented 50% nickel iron, with split primary windings W 11 , W 12  and secondary windings W 21 , W 22  linking both cores 10, 20 to prevent either of the cores being run into full saturation. The magnetic condition of the cores is biased by a direct current i 2 , from a battery E C , passing through bias windings W r2 , W r1  in series opposition. Sensing windings W d1 , W d2  are similarly connected, allowing a signal voltage to develop across ballast resistor R d  if either of the cores starts to saturate. The signal voltage is fed to a threshold logic circuit, such as a Schmitt trigger, and a sequencing and driving circuit, such as a bistable multivibrator, to open switch S 1  or S 2  in the relevant half of the primary winding, preventing the core from being driven into full saturation. The switches S1 and S 2  are driven alternately through AND circuits to produce inverter operation and the circuit maybe used for D.C. to D.C. conversion by rectifying the transformer output.
Patent GB-1257975-A (GB)
IPC: F16K31/122
Filed: 1969-07-28
Abstract: 1,257,975. Valves. ALFONS HAAR, [trading as ALFONS HAAR/MASCHINENBAU]. 28 July, 1969 [8 Aug., 1968], No. 37756/69. Heading F2V. [Also in Division G3] A gate valve has each of two closure members 6, 14 moved transversely of the flow passage by a respective one of two hydraulic pistoncylinders 21, 22 which are interconnected by a pipe 10 and are connected to a pressure source at 23. Springs 11 bias the pistons 37 radially inwards to close the passageway while fluid pressure acting in annular spaces 39 moves the pistons in the opposite direction to open the passageway. Each piston is connected to the respective closure member by a mushroom head 40 received in a T-slot 42. Due to the piston-cylinder 21 being connected to the pressure source via piston-cylinder 22 there will be a delay in the closing of member 6 relative to member 14. The flow passage may be formed as a Venturi and flow measurements therein may be used to automatically shut the valve when a flow rate is exceeded.
Patent GB-1259464-A (GB)
IPC: G01D3/02
Filed: 1968-10-03
Abstract: 1,259,464. Measuring curves electrically. UNIVERSITY OF LEEDS and J. B. DAWSON. Dec.31, 1969 [Oct.3, 1968], No.46951/68. Heading G1N. The peaks of a curve representing e. g. the concentration of components in a mixture, are followed manually by a cursor 15, Fig. 1 coupled to the slides of a potentiometer 16, Fig. 2 to obtain corresponding voltage signals which are fed through a friction generator circuit 20 to give signals representing corresponding percentage concentrations. The curve is on a chart 12 which is located on the top of a casing 10 provided with illuminated slits 5 to enable the chart to be lined up with respect to the rod 14 on which the cursor moves, and the chart is drawn along axially as by a feedroller. (For Figures see next page)
Patent GB-1289501-A (GB)
IPC: B06B1/06
Filed: 1969-01-02
Abstract: 1289501 Spray producers SIMMS GROUP RESEARCH & DEVELOPMENT Ltd 19 Dec 1969 [2 Jan 1969] 251/69 Heading B2F [Also in Division G5] A piezoelectric oscillator 1 comprises lengths of metal bar between which are inserted piezoelectric crystals 2, 4. The crystals are excited by phased generators at a frequency corresponding to their spacing to produce ultrasonic vibrations with the crystals at nodes. There may be more than two crystals. The oscillator may be associated with a horn transformer to produce increased amplitude oscillations at its tip. The oscillator may be used in an ultrasonic atomiser, and its length may encompass many nodes.
Patent GB-1290969-A (GB)
IPC: C12C7/14
Filed: 1970-12-22
Abstract: 1290969 Filter G SOLDAN 22 Dec 1970 [23 Dec 1969] 60846/70 Heading B1D [Also in Division C6] A brewing mash -clarification apparatus 1 includes a fixed filter 4 of at least 1000 (preferably 5000) openings per square centimetre, an annular manifold 5 for removal of first wort, an annular filter element 10 to hold the draft and a hinged, rotatable or slidable lid 12, cock 8 and conduit 9 for the discharge of aqueous draft at the end of the process. The so-called final wort may be secured by admitting water into the mash through a line 13 and withdrawing the resulting wort by line 14. The apparatus includes a contoured impeller 17 and heater 19.
Patent GB-1295803-A (GB)
IPC: F16K27/10
Filed: 1971-04-28
Abstract: 1295803 Welding by fusion GROVE VALVE & REGULATOR CO 28 April 1971 11901/71 Heading B3R [Also in Division F2] A ported end closure 44 for a valve housing 12 is clamped against an internal abutment 66 by welding a locking ring 98 to the housing. As the weld 102 cools, it contracts, thereby increasing the clamping pressure against the abutment. During the welding operation cooling fluid is passed through the valve in order to protect components susceptible to damage by heat. A hub 17 is also welded at 30 to the valve housing.
Patent GB-1309908-A (GB)
Title: Brake device
IPC: F16D49/16
Filed: 1969-07-21
Abstract: 1309908 Torque-responsive brakes; external shoe-drum brakes M W THRING 21 July 1970 [21 July 1969] 36565/69 Heading F2E A prime mover such as an electric motor 16 has a rotatable shaft 15, 32, 33 the shaft portion 33 being loaded to transmit torque to a stator housing 17 on energization of the motor to cause the housing 17 to partially rotate and thereby actuate a mechanical linkage consisting of rods 23, 24, 25 (or alternatively a Bowden cable) and a cam 26 to cause disengagement of friction members 31 from shaft portion 32. The housing 17 is supported by means 50 and its rotation is limited in both directions by abutment faces 20, 21 on a stop member 22. The friction members 31 are fitted on extension arms 29 of caliper elements 27 and with the motor in its non-operative state are held in contact with shaft portion 32 by a tension coil spring 29. The arrangement is applicable to a wheel-chair or a lorry as a fail-safe arrangement whereby the brake is held on unless the motor is operating. The electric motor may have a rotor external of the stator and the prime mover could be an internal combustion engine.
Patent GB-1311317-A (GB)
Title: Bituminous polypoxide compositions
Inventor: CHRISTIANSEN P
IPC: C08L95/00
Filed: 1970-12-10
Abstract: 1311317 Bituminous polyepoxide composition DOW CHEMICAL CO 10 Dec 1970 58657/70 Heading C3B A composition comprises (in per cent by wt. of the total composition): (I) 10-50% of a urethane modified epoxy resin (i.e. a reaction product of an epoxy resin and a polyurethane prepolymer); (II) 5-40% of a soft bitumen having a per value (ASTM D5-65) of 250-450; and (III) 10-30% of a hardener which is a mixture of an aromatic polyamine and a phenolic compound. I may be prepared by reacting a diglycidyl ether of bisphenol A or of polyepichlorohydrin with a prepolymer form glycerol/propylene oxide condensate (M.W. 2000- 3000), toluene diisocyanate and tetraethylene glycol. The composition may also contain an unmodified epoxy resin, a reactive flexibilizer which is an aliphatic triglycidyl ether, an amine accelerator, e.g. N,N-aminoethylpiperazine, an organic solvent, a reactive compatibilizer which is an epoxidized unsaturated fatty acid ester and a filler, e.g. calcined bauxite or basalt. The compositions cure in 2-12 hours at ambient temperatures. Uses.-Road surfacing.
Patent GB-1317015-A (GB)
Title: Apparatus for separating impurities from liquids
IPC: B01D29/05
Filed: 1970-07-11
Abstract: 1317015 Backflushing filters I F A GETRIE BEWERKE BRANDENBURG VEB 11 July 1970 33767/70 Heading BID Filter discs 3 supported by perforated discs flushed by a flushing fluid by reversing units 10 2 clamped between cover members 1 are backwhen pressure gauges 78, or a single differential pressure gauge (not shown) indicate an undesirable pressure drop across the filter. A transmitter 9 controls the flow reversing units 10. The filter is used in electrolytic processes.
Patent GB-1319680-A (GB)
Title: Ball bearings
IPC: F16C19/16
Filed: 1970-11-11
Abstract: 1319680 Bearings RUBBER PLASTICS Ltd 10 Nov 1971 [11 Nov 1970] 53636/70 Heading F2A The races of an angular contact ball-bearing assembly are made of an elastically deformable plastics material, and one race 1 has a shoulder 3 adjacent to its track over which the balls ride with elastic deformation of the races during assembly to give a snap-together construction. The mounting surfaces and/or the end faces of the races may be splined, 5, or otherwise relieved. The races may be shaped to form a labyrinth seal. A second row of balls may be provided to accommodate high axial loads in one direction, or axial loads in both directions, in which latter case a two-piece inner race is provided (Fig. 6, not shown). The balls may be accommodated in a cage, or in moulded pockets in one of the races. Opposed annular faces may be provided on the races such that they contact each other under shock loadings. The plastics material may be a polyamide, a polyacetal, a polyester, a polyurethane, a polyethylene, or a polypropylene, and may be filled with fibres or a lubricant.
Patent GB-1321831-A (GB)
Title: Positional transducers
IPC: G01D5/241
Filed: 1969-06-20
Abstract: 1321831 Positional transducers NATIONAL RESEARCH DEVELOPMENT CORP 11 June 1970 [20 June 1969] 31380/69 Heading G1N A transducer for obtaining the x, y co-ordinates of the position of a movable member comprises a matrix of square reference electrodes 2 Fig.2a on one face of an insulating base plate (not shown) and a square sensor electrode 3 on the other face of the base plate. The reference electrodes are individually fed with a voltage that progresses in the two co-ordinate directions, supplied alternately at a fixed frequency, whereby the voltages picked up on the sensor electrode are alternately indicative of the x and y displacement. After a coarse measurement the reference voltage may be applied only to the reference electrodes in the immediate vicinity of the sensor electrode to increase sensitivity. The matrix may be mounted on a flat or cylindrical base plate.
Patent GB-1322186-A (GB)
Title: Extendable strut assemblies
IPC: B64G99/00
Filed: 1970-11-16
Abstract: 1322186 Boom for artificial satellite BRITISH AIRCRAFT CORP Ltd 5 Oct 1971 [16 Nov 1970] 54389/70 Heading B7W [Also in Divisions E2 and F2] An extendable strut assembly comprises a rigid strut member 5 pivotally connected to another rigid strut member 10 for movement between a folded position, Fig. 1, and a generally coaxial extended position, Fig. 5 (not shown), with a spring biasing the struts towards the extended position, there being means for locking the members in the extended position. The connected ends of the members are formed as lugs 8, 9 pivotable on a shaft 11, one having a pair of upstanding keys (13), (14), Fig. 2 (not shown), and the other a complementary pair of keyways (16), (17), Fig. 3 (not shown). To deploy the assembly, elastic retaining cord 30 is released, and coil springs 20, 21 urge the member 10 to rotate and urge the lugs together. Following engagement of the keys in the keyways, spring-loaded plungers 26, Fig. 4, held in holes 29 in the shaft 11 are released to lock the lugs together. The keys and the surface surrounding the keyways may be covered with layers 18, 19 of an anti-friction material such as PTFE. To allow a greater angle of rotation, two keys (36), (37), Fig. 7 (not shown), of different sizes may be provided together with two matching keyways (39), (40). Strut member 5 may be pivotally mounted on a spacecraft 4, and the member 10 may carry at its other end an experimental device 31, solar cells or aerial; alternatively the assembly may comprise more than two strut members.
Patent GB-1327858-A (GB)
Title: Balloon catheters
IPC: A61F2/958
Filed: 1971-07-22
Abstract: 1327858 Balloon catheters EUROMEDICAL INDUSTRIES Ltd 17 July 1972 [22 July 1971] 34394/71 Heading A5R A balloon catheter in which the balloon has a plurality of reinforcement lines or zones which are all parallel to or extend in planes radial to the axis of the catheter main tube is made by, either forming the balloon separately on a longitudinally inlobed mandrel by dipping in liquid latex and then applying the balloon to a catheter tube and balloon distension tube to further latex dipping; or, by applying a ribbed tubular former of over the catheter main tube and dipping the assembly in liquid latex.
Patent GB-1331262-A (GB)
Title: Entry guides for rolling mills
IPC: B21B39/16
Filed: 1971-04-23
Abstract: 1331262 Rolling mills DAVY & UNITED ENG CO Ltd 23 April 1971 [21 April 1970] 18958/70 Heading B3M An entry guide for the first stand of a tandem strip mill is provided with upper and lower horizontal rollers 24 and 25 which cause a strip to undulate as it passes between them, thereby creating a back tension on the strip. The upper rollers 24 are supported by parallel links 46 and 48 for adjustment towards and away from the lower rollers. A pivot shaft with eccentric portions 40 allows the upper rollers to be canted relative to the lower ones. Vertical rollers 21 guide the edges of a strip and are laterally adjustable. The entry guide as a whole is vertically adjustable relative to a shaft 60 fixed to the mill housing, and is also pivotable about the shaft by rams 62. The vertical adjustment is made by an hydraulic motor 96 acting on screw jacks 97. The rollers 24 and 25 are arranged to be removable from the mill stand by passing them through a window in the mill housing, in the same manner as the work rolls 10 and 12 are removed from the stand. After the work rolls have been removed, one set 25A of the lower rollers is drawn into the mill stand and on to a carriage 70 (Fig. 3, in plan). Latches 77 on the carriage co-operate with a support for the rollers (Fig. 4) to draw the support into position. The rollers together with the carriage are then movable longitudinally of rails 75 in the stand to a position outside the stand. The other set 25B of lower rollers, and also the upper rollers 24, are removed in a similar way, the upper rollers being supported on a pedestal during removal. The latches are movable laterally of the carriage by means of chains 83 on which they are mounted. The chains 83 are moved around their supporting sprockets by a further chain 89, the rod 90 of a ram 91 being coupled to the latter chain.
Patent GB-1333217-A (GB)
Title: Shoe insole materials and the manufacutre thereof
IPC: D04H1/4334
Filed: 1969-10-31
Abstract: 1333217 Bonded fibre fabrics; testing fabrics BRITISH UNITED SHOE MACHINERY CO Ltd 30 Oct 1970 [31 Oct 1969] 53348/69 Headings D1R and D1S A shoe insole sheet material comprises a layer including a non-woven fibre batt which has been impregnated with a binder material, the layer having been extended before bonding in a first direction but not in a second direction at right angles to the first direction in such a manner that the layer did not after extension regain its unextended configuration, the insole material having a flexural rigidity when bent about an axis parallel to said second direction at least 50% greater than the flexural rigidity when the material is bent about an axis parallel to said first direction. A garnetted crosslaid mat of viscose rayon (Example 1) or 33 1/3 % by weight nylon and 66 2/3 % rayon (mainly viscose, but with up to 20% rayon as acetate rayon) (Example 2), the denier and length being specified, is needled and, optionally combined with two identical mats by needling. The single or composite mat was evenly stretched by 10% in the direction in which it had been fed through the needle loom, dried at 100‹C, immersed in a toluene, acetone or methyl ethyl ketone solution of polyurethane formed by reacting polypropylene glycol with toluene diisocyanate, and containing dibutyl tin dilaurate or catalyst, calendered to remove excess impregnant, dried at 100‹C and cured in a press. One platen was heated to 130‹C, the other was unheated, and the mat was turned over several times. The binder comprised 40 parts by weight based on 100 parts for the fibres. Alternatively the needled mat was impregnated with a dispersion of a carboxylated high nitrile content rubber and polyvinyl chloride/ polyacrylate copolymer, calendered and simultaneously stretched 25%, dried and cured by passing under tension round steam heated drying drums. A stretched mat may be needled to a non- stretched mat, or a mat may be combed on one side, before impregnation. Parallel threads may be incorporated into the mat. Both materials retained most of the stretch (which caused an alignment of fibres) and so had a flexural rigidity about the second direction between 1.5 and 4 times that about the first direction, i.e. the direction of stretch. Densities, thicknesses and weights/unit area are quoted. Shoe insoles are cut from the material. Flexural rigidity was measured by cutting 4" x 1" rectangles, with the long side lying along the longitudinal direction or along the transverse direction, placing the piece across two parallel knife edges and placing on the fabric piece a bridge member having two parallel knife edges. An additional load was placed on the bridge to produce a lowering of the bridge member of 0.04 to 0.06 inch after 45 seconds and the flexural rigidity calculated from a specified formula:
Patent GB-1333333-A (GB)
Title: Pipe supprt fittings
IPC: F16L3/10
Filed: 1971-04-22
Abstract: 1333333 Pipe brackets A P V Co Ltd 1 March 1972 [22 April 1971] 10851/71 Heading A4B [Also in Division E2] A pipe support fitting comprises a generally- U-shaped resilient saddle element 1 adapted to embrace a pipe to be supported, an element for closing the mouth of the saddle element and means for clamping the closing element on to the saddle element, the saddle element preferably having undulations 2 to form bearing members lightly holding the pipe in position by the inherent resilience of the material. In the construction shown the saddle element 1 has its ends turned over to form locating channels 5 with which hooks 6 at the ends of the closing element engage; the clamping means is a screw 8 which passes through a threaded bore in a nut 7 welded to the closing element, the tip of the screw engaging the pipe when it is in position in the saddle element to clamp the pipe and the closing element to the saddle element. The saddle element has a base 3 provided with screw holes by which it may be attached to a support, or a wall or the like.
Patent GB-1333692-A (GB)
Title: Apparatus for stacking flexible material
IPC: B65H35/04
Filed: 1972-01-13
Abstract: 1333692 Delivering sheets; folding apparatus VELUWSE MACHINE INDUSTRIE NV 13 Jan 1972 1646/72 Heading B8R A sheet stacking apparatus which may also be used for zig-zag folding of a web comprises an endless conveyer belt 2, which extends around rollers 5 and 6 mounted on a reciprocable carriage 10. The carriage is movable by a piston and cylinder arrangement 8, 9 to a position where it extends over a vertically movable support surface 13. Rollers 4 and 5 are rotatable in only one direction such that the belt is stationary relative to the carriage on movement of the carriage over the surface and moves over the carriage rollers to deposit a sheet on return of the carriage. A fixed cutting blade 11 cooperates with a blade 12 mounted on the carriage so that sheets are severed from a web 3 on every reciprocation of the carriage. When used as a zig-zag folder a clamp means 19 clamps the belt relative to a fixed frame of the apparatus on the outward movement of the carriage and releases it on the inward movement. Thus web 3 is rolled off the carriage in both directions of movement thereof.
Patent GB-1344461-A (GB)
Title: Temperature indication device
IPC: G01K11/06
Filed: 1970-06-30
Abstract: 1344461 Temperature indicators LEYTONS (FOODS) Ltd 29 June 1971 [30 June 1970] 31651/70 Heading G1D A temperature indication device, e.g. for frozen foods, comprises a plunger 20 of magnetic material urged by a compressor spring  22 toward one end of a tube, the tube having an annular transparent window 16 defined between coloured rings 17 bounding an opaque material 14, e.g. paper or paint, positioned between two transparent plastics tubes 10, 12, the tube 12 containing a medium such as water or a water/ethylene glycol mixture which is normally in a frozen state and prevents movement of the plunger from a retracted position shown in Fig. 2; but when the device is subjected to a temperature above the melting point of the medium for a sufficient length of time melts to allow the plunger, which may be brightly coloured, to move to the end of the tube where it is visible through window 16. By making the plunger of magnetic material, e.g. soft iron, it may be reset into the retracted position magnetically, as for example by the apparatus of Fig. 3 (not shown).
Patent GB-1345138-A (GB)
Title: Shoemaking
IPC: A43D11/03
Filed: 1969-12-27
Abstract: 1345138 Injection moulding footwear BRITISH UNITED SHOE MACHINERY CO Ltd 19 April 1971 [27 Dec 1969] 62994/69 Heading B5A [Also in Division A3] In the injection-moulding of a shoe bottom unit, a foot-form 40 carrying the lasted upper A and a heel filler block 20 is placed in moulding assembly 50 which comprises sole member 51, two side members 52, 56, two welt plates 53, 57 (one secured to each side member) and two heel clamps 54, 58 each having a lower lip continuous with the corresponding welt plate and an upper lip 55, 59. The heel clamps 54, 58 define a cavity C between the upper u and the lining L into which the moulding fluid, e.g. PVC flows via channels through heel filler block 20.
Patent GB-1350289-A (GB)
Title: Portable winch
IPC: B66D1/00
Filed: 1971-05-17
Abstract: 1350289 Anchoring hauling winches A G BLOCK 3 Aug 1972 [17 May 1971] 15379/71 Heading B8B A portable winch comprises a winch drum 17 mounted at the apex of a collapsible triangular frame including front and rear legs 10, 11 hinged together at their upper ends and a tie bar 14 extending between the lower ends of the legs and detachably connected to one of them, the lower end of the front leg digging into the ground to anchor the winch during hauling. The hauling line 34 extends from the drum 17 which may be manual or power driven, to a load hook 32, either directly, or through a pulley block 31 associated with the hook, with the end of the line anchored to a hinged member 29 on the frame, or through the pulley block 31, through a further pulley block 28 on the member 29 and back to the block 31 for anchorage thereat. The lower end of the rear leg 11 is provided with a U- shaped bracket 13 whereby that end may be either locked on a vehicle towing ball with the aid of a pin in apertures 40, or tied to a post in the ground, or simply stood on by the operator, a handle 19 being provided on the leg 11 for steadying the apparatus during use. The tie bar 14 comprises a tube 24 telescopically received on a reduced portion 26 of a tube 22 and locked together with a pin 27, the tubes being pin connected to the legs 10, 11. The tie 14 may be shortened, depending on the terrain of use, by swinging the tube 24 to the outside of the frame and coupling the tube 22 directly to the leg 11. In the embodiment of Fig. 6 (not shown) the swivel frame is mounted on a vertical post whereby the switch can be used for lifting.