baber/WOPTO huggingface dataset:
Patent GB-1231500-A (GB)
IPC: H03F1/52
Filed: 1968-08-28
Abstract: 1,231,500. Transistor amplifiers. STANDARD TELEPHONES & CABLES Ltd 28 Aug., 1968, No. 41144/68. Heading H3T. Overload protection in an amplifier has a capacitor C1 which changes to a voltage corresponding to the peak voltage across a resistor R1 carrying amplified current, and when the capacitor's voltage reaches a predetermined value a switch VT1, VT2 operates to reduce current in a stage VT3 of the amplifier. The transistor VT3 is the input stage and is connected through intermediate stages (not shown) to the output transistor VT4 whose collector resistor is R1. VT3 receives its current from the supply 1 through transistor VT2 which with VT1 forms a Schmitt trigger operable by a sufficiently negative voltage at 5, upon overload of the output, to cut off the supply to VT3. In a second embodiment (Fig. 2, not shown), the input transistor VT3 is in parallel with the transistor VT1 of the switching circuit, and is shorted out when a sufficiently positive voltage on the capacitor C1 is reached (indicating overload of the output). The capacitor (C1) is here connected through the diode (D1) to the emitter of one transistor (VT6) of a series pair (VT5, VT6) constituting the output stage. In both embodiments the diode D1 ensures a larger discharge than charge period and with adjustment of a resistor R2, a high off-on ratio can be achieved, whereby the transistors of the amplifier are subject to excess current only for very short periods, with long periods in which the junctions may cool down.
Patent GB-1232632-A (GB)
IPC: D06N3/00
Filed: 1968-05-02
Abstract: 1,232,632. Microporous polyvinyl chloride films. ZENTRALE FORSCHUNGSUND ENTWICKLUNGSSTELLE FUR DIE KUNSTLEDERINDUSTRIE. 2 May, 1968, No. 20938/68. Heading B5B. [Also in Divisions B1-B2 and C3]  A microporous polyvinyl chloride film or substrate coated with such a film is obtained by forming a paste of polyvinyl chloride with a plasticizer, mixing with the paste a watersoluble liquid which is incompatible with and is a non-solvent for the polyvinyl chloride, applying the mixture to a substrate and heating the coated substrate after which the coated substrate, or the polyvinyl chloride film separated from the substrate, is edulcorated in water at an elevated temperature to remove the liquid. The paste may contain an emulsifier for the polyvinyl chloride and the liquid substance may be a monoglycol or polyglycol such as ethylene glycol, butylene glycol, octane diol, glycerine or hexane triol. The substrate may be a fabric or a release paper.
Patent GB-1232695-A (GB)
IPC: B61F5/32
Filed: 1968-07-08
Abstract: 1,232,695. Rail vehicle suspensions. BRITISH RAILWAYS BOARD. 16 June, 1969 [8 July, 1968], No. 32475/68. Heading B7L. In the suspension system of Specification 1,212,513 the stiffness of relative longitudinal movement between the vehicle body 1 and the wheel set 2 is increased by mounting at least some of the pins 12 in torsionally elastic bushes.
Patent GB-1238458-A (GB)
IPC: A24C5/30
Filed: 1967-12-15
Abstract: 1,238,458. Continuous rod cut-off. MOLINS MACHINE CO. Ltd., E. G. PRESTON and P. A. MAW. 13 Dec., 1968 [15 Dec., 1967], No. 57037/67. Heading A2C. [Also in Division B3] A continuous cigarette rod CR is fed by a pair of elements 11, 12 which are driven by gearing 14, 16, 17 and formed with radial slots 11B, 12B to permit the passage of a knife 19 mounted on a rotating drum and sharpened by grinding wheels 30, 39 (Division B3).
Patent GB-1250451-A (GB)
IPC: B67D1/10
Filed: 1967-07-15
Abstract: 1,250,451. Dispensing measured quantities of liquids. BASS CHARRINGTON Ltd. 14 Oct., 1968 [15 July, 1967], No. 32651/67. Heading B8N. Apparatus for dispensing measured quantities of liquid comprises a small bore tube having an internal diameter in the range 1/16 to 1 inch, a free piston member movable along the tube between predetermined limit positions, limit means which serves to prevent movement of the piston member beyond the limit positions, and valve means for connecting one end of the tube alternately to a liquid inlet and an outlet and for allowing, in use, fluid to be supplied to the other end of the tube when the one end is connected to the outlet. In the embodiment of Fig. 1, the piston member 12 is a capsule of P.T.F.E. containing air or gas, and valves 14, 16 connect inlet 18 to one of the ends of the tube 10 and simultaneously connect the other end to a delivery conduit 20. The valves are actuated directly by manual operation of a tap or indirectly by means of a switch which controls an electric solenoid or solenoids. A detent device is associated with the valves so that once a dispensing operation has commenced the apparatus cannot be stopped or reversed until a full measure has been dispensed. The detent device may be combined with a counting device to indicate the number of measures dispensed. Members 22 constitute the limit means. In the embodiment of Fig. 2 the limit means includes switches 48, 50 actuated by piston member 12 which contains a small amount of ferrous metal. Initially valves 54, 56 are open and valves 58, 52 are closed. Manual opening of tap valve 62 allows liquid to flow via valve 54 and displace the piston member. A measure of liquid is thus discharged via valves 56 and 62. When switch 48 is actuated the valves 52, 54, 56, 58 are reversed and valve 62 is automatically closed. A further measure will be dispensed when the valve 62 is again manually opened. Switches 48, 50 have "hold-in" devices associated therewith such that, once activated, they are not deactivated until a full measure has been dispensed. In a further embodiment (Fig. 3, not shown) similar in operation to that of Fig. 2 two small bore tubes are connected together. Each tube contains a piston member and the space between those members is filled with air.
Patent GB-1250898-A (GB)
IPC: C22C38/54
Filed: 1968-06-20
Abstract: 1,250,898. Steel alloys. FIRTH BROWN Ltd, H. W. KIRKBY AND A. HOGG. June 12, 1969 [June 20, 1968], No. 29473/68. Heading C7A. An alloy steel for high temperature applications, particularly for compressor and turbine discs in gas turbine engines, has a composition in the following range in per cent by weight C 0.1 - 0.2 Si 0.1 - 0.8 Mn 0.5 - 1.0  Cr 9.0 - 11.0 Ni 1.5 - 3.5 Mo 1.5 - 3.0 V 0.2 - 0.5 Nb 0.1 - 0.4 Co 2.0 - 3.5  Cu 0.1 - 2.0  B 0.005 - 0.02 N 0.01 to less than 0.05 Fe and impurities the balance.
Patent GB-1250911-A (GB)
IPC: C07F9/58
Filed: 1968-08-09
Abstract: 1,250,911. Phosphorus acid esters. PEPRO SOC. POUR LE DEVELOPPEMENT ET LA VENTE DE SPECIALITIES CHIMIQUE. 6 Nov., 1969 [9 Aug., 1968], No. 38130/68. Heading C2P. Compounds of the general formula where R is C 1-3  alkyl or alkoxy, phenyl, or mono- or di-alkylamino, R<SP>1</SP> is C 1-3  alkyl, and X is oxygen or sulphur, are prepared by reacting a halide of formula (R)(R<SP>1</SP>O)P(X)Hal with 5- hydroxy - 2 - methyl - pyridine or an alkali metal salt thereof in an inert organic solvent, generally between 20 and 100 C. The compounds have insecticidal, ascoricidal, nematocidal and fungicidal properties when used with an inert diluent in granules, powders and solutions.
Patent GB-1252389-A (GB)
IPC: F16D65/78
Filed: 1970-06-05
Abstract: 1,252,389. Cooling disc brakes. CENTRE DE RECHERCHES DE PONT-A-MOUSSON. 5 June, 1970 [6 Aug., 1969], No. 27162/70. Heading F2E. In a brake having a rotor of the type comprising two discs 2, 3 defining a radial ventilation air passage 8, one of the discs 2 being secured by a drum 5 to the wheel to be braked, there is a ventilation limiting device comprising a circular arrangement of pivoted plates 6 each pivoted by a hinge to the drum 5 and capable of being applied against the inner edge 12 of the second disc 3 under the effect of centrifugal force, the plates being combined with return means for returning the plates to a withdrawn opening position. The return means and the mass of the plates are such that the plates are automatically applied against the disc 3 as soon as a given limit speed of rotation of the rotor is attained. As shown, the plates, of trapezoidal shape, have hooks 10 which engage a toroidal return spring 11; the plates may overlap to reduce or eliminate the air inlet gaps 9 in the position for closing the passage 8. Instead of the toroidal spring 11, a plurality of interconnected springs are used. In a modification, the hooks 10 of the plates 6 are connected by links to a collar slidable on an axle controlled by the lever of a centrifugal governor or a pneumatic or hydraulic device.
Patent GB-1264423-A (GB)
IPC: C23C18/16
Filed: 1969-02-17
Abstract: 1,264,423. Fabrics. ASAHI KASEI KOGYO K.K. 17 Feb., 1969 [17 Feb., 1968], No. 8482/ 69. Heading D1K. [Also in Division C7] Synthetic fibres which have been molecularly oriented by e.g. stretching are coated to a thickness of 100 to 10,000Š with e.g. Ni, Cu, Ag, Sn, Co, Cr, Zn, Au, Pd, Pt or P by electroless plating. The fibres may be of polyamide, polyester, polyvinyl, polyacrylonitrile, polyvinylidene chloride, polyolefin, polurethane, acrylic or A B S resin. The fibres may be initially etched in any one of chromic anhydride, sulphuric, nitric or hydrochloric acids, potassium bichromate, hydroquinone, pyrocatechol or acetone. The fibres are catalyzed with salts of Ag, Pd or Au, and a reducing agent, e.g. stannous chloride, hypophosphorous acid, hydrazine chloride or hydraquinone may be applied before or after the noble metal salt.
Patent GB-1288960-A (GB)
IPC: A61F5/02
Filed: 1969-10-30
Abstract: 1288960 Spinal supports M TIGGES 30 Oct 1969 [2 Nov 1968 23 Dec 1968] 53282/69 Heading A5R A spinal correction belt comprises a wide elastic belt 10 including a plurality of members 48, 50, 52, 54 spaced apart vertically above one another on the inside of the belt, and having a generally arcuate shape so that they bear at their ends 64 only on the muscles laterally adjacent to the spine. The members are mounted by means of rivets or pins 56 which pass through apertures (58, 89) Fig. 12 (not shown) in a spring strip 44 extending up the back of the belt adjacent to the spine, the apertures (58) being elongated such. that members 48, 50, 54 may slide vertically on the strip, all of the members being rotatable. A rubber band (46), Fig. 4 (not shown) is disposed between the members and spring strip 44. The belt 10 has a back part 24 with spring strips 29, or other stiffening bars sewn into it at its junctions with side parts 26, which are connected at their other ends with a belly plate 12 which is in two halves 36 connected by hook clasps 38. The front ends of the side parts are pivotally attached at 40 near their lower edges to the belly plate, and lacing 42 connects the remainder of the end edges. The outside of the back part 24 has tightening lacings 32 behind the spring strip 44. An elastic reinforcing band 30 is provided around the outside bottom edge of the belt. The members 48, 50, 53, 54 may be interconnectible by interlocking pins, Fig. 9 (not shown).
Patent GB-1290998-A (GB)
IPC: G06F13/42
Filed: 1971-04-19
Abstract: 1290998 Selecting remote terminals for data transfer BURROUGHS CORP 19 April 1971 [26 March 1970] 24046/71 Heading G4A An on-line data processing system includes a central processor, a control unit, a number of remote terminal units, and a remote unit selecting device, the arrangement being such that the control unit generates, in response to a signal from the central processor, a signal the duration of which is indicative of one of the remote units, and the selecting device on receipt of the signal energizes the appropriate remote unit so that a transfer of data may occur between the selected remote unit and the central processor. The Specification describes a system having a number of input/output units connected via an I/O control unit 20 to one channel B and a number of remote terminal computers connected to a second channel A, one of the two channels being selected and connected to the central processor over a single transmission channel 14. The system may be used in banking. The control unit includes a counter 54 having two outputs which are energized at different counts and a gating circuit which is described in detail, and which is effective to select one of the counter outputs so that a flip-flop 74 is set when the counter, which is driven by an oscillator, is started, and reset when the count corresponding to the selected output is reached. The output of the flip-flop thus consists of a pulse having one of two possible durations which correspond to the two channels. The flip-flop output is modulated, 77, transmitted to the remote sites over a transmission channel 14, demodulated, and used to select one of the two channels A and B. The selection is made by a timing circuit, which is described in detail and which includes two timing devices one of which generates a first signal is the selection signal persists for longer than a predetermined first period of time and the other a second signal if the selection signal persists for longer than a second and longer predetermined period of time. A selecting device is responsive to the first signal to select one of the channels and the second signal to select the other. Selection of a particular unit connected to the selected channel is not described. The modulation techniques employed may be as described in Specification 1,233,829.
Patent GB-1295324-A (GB)
IPC: B01F15/04
Filed: 1970-10-23
Abstract: 1295324 Injectors ELF UNION 23 Oct 1970 [5 Nov 1969] 50544/70 Heading F1E [Also in Division B1] In an injector mixing apparatus, a first liquid A under pressure traverses a chamber 5, passage 7, check valve 10 and passage 19 and is injected into passage 21 through calibrated orifices 20. A second liquid A+B at variable pressure is supplied to chamber 17 and passage 21 where it produces a back pressure on the liquid A. The thus formed mixture mixes at inlet 24 of nozzle 25 with the third liquid B which enters chamber 26 at a low or zero stable pressure. As described, A is water and B a fuel oil, the mixture being pumped by pump P to a conduit supplying a burner (40) Fig.3 (not shown), and A+B is the discharge b of a pressure-limiting device R the flow rate of which is complementary to the consumption rate of the burner, the arrangement ensuring constancy in the proportions of fuel and water in the burner supply. In a modification Fig.2(not shown), the outlet of the variable pressure chamber 17 is defined by an axial needle (30) which co-operates with an axial passage in a slidable member (31) urged towards the needle by a spring, variations in the inflow rate of A+B being balanced by axial movement of the slidable member. The operative members are carried in a tubular member (32) which enables the apparatus to be assembled and mounted without disturbing its adjustment.
Patent GB-1297355-A (GB)
IPC: F16K35/16
Filed: 1971-08-06
Abstract: 1297355 Valves C H HAFELE 6 Aug 1971 [6 Aug 1970] 37269/71 Heading F2V In a rapid-closure valve an armature 5 is connected to a double-acting actuating piston 2 and is disposed within the cylinder 6 so as to co-operate with a magnet 7 having a centre polepiece and an outer pole ring to hold the valve open. A wall 11 forming the end of the cylinder 6 separates the armature and magnet and is formed by a central magnetic disc 12 secured to the centre polepiece, an inner non- magnetic ring 13 and an outer magnetic ring 14. The disc 12 and rings 13, 14 are welded together and the wall 11 is welded to a ring 16 which is welded to the end of cylinder 6. Ring 13 is thinner than disc 12 and ring 14. A winding may surround the central pole of the magnet to increase or decrease the magnetic field. Concentric expansion grooves are formed in the faces of ring 13.
Patent GB-1307015-A (GB)
Title: Progressing cavity helical pump or motor
IPC: F04C2/107
Filed: 1970-03-16
Abstract: 1307015 Shaft couplings C H ALLEN 16 March 1970 12495/70 Heading F2U [Also in Division F1] The coupling between a drive-shaft 19 and the rotor 12 of a rotary pump (see Division F1) comprises a link 22, bifurcated at one end 24 and connected to the shaft 19 and rotor 12 by means of a pair of parallel pivot pins 23, 25, thus permitting eccentric movement of the axis O-O of the rotor 12 at twice the rotational velocity of the rotor itself.
Patent GB-1308325-A (GB)
Title: Inclinometer devices
IPC: G01C9/34
Filed: 1970-02-05
Abstract: 1308325 Vibration dampers B & A ENG CO Ltd 19 April 1971 [5 Feb 1970] 5675/70 Heading F2S [Also in Division G1] In an inclinometer (see Division G1) rotation of a spindle 6 due to deviation of its axis from vertical is damped by frictional engagement of parts 15<SP>1</SP>, 17<SP>1</SP> connected respectively to the spindle 6 and a casing 1, 4 in which the spindle is rotatably supported. As shown, an internally threaded tubular member 16<SP>1</SP> screwed on to the casing 1 is axially adjusted to provide abutting engagement of its end 17<SP>1</SP> with a rubber insert 23 on a flange 15<SP>1</SP> fixed to the spindle 6, the amount by which the tubular member 16<SP>1</SP> is adjusted determining the amount of damping of the spindle 6. In an alternative arrangement (Fig. 1, not shown) a spring (18) urges a flange (17) on a member (16) slidably attached to the casing 1 into frictional engagement with a flange (15) fixed to the spindle. Locking screws (21, 22) may be provided to prevent rotation of the spindle 6 and relative movement of other parts during transit of the inclinometer.
Patent GB-1311662-A (GB)
Title: Hydration and moulding of hydraulic bindings materials
IPC: C04B40/06
Filed: 1969-02-24
Abstract: 1311662 Cements IMPERIAL CHEMICAL INDUSTRIES Ltd 12 May 1970 [24 Feb 1969] 9690/69 Headings C1A and C1H An hydraulic binder is reduced to or below the M.P. of an aqueous setting agent and maintained at such temperature whilst adding the setting agent in particulate form, the temperature then being raised to thaw the agent. Specified binders are hemihydrate, anhydrite plus alum, plaster, stucco and cement, whilst the setting agent is ice which can contain a dye which indicates when mixing is complete. The method allows exact hydration, e.g. 18À5% ice added to hemihydrate to give the dihydrate. Optionals are clay, perlite, steel wire, Al.St, graphite, metal powders, silicones, glass fibre, asbestos, nylon and fibrillated polypropylene.
Patent GB-1314199-A (GB)
Title: Primary radar
IPC: G01S1/02
Filed: 1970-12-29
Abstract: 1314199 Pulse radar; aerials A C COSSOR Ltd 23 Dec 1971 [29 Dec 1970] 61650/70 Headings H4A and H4D A radar aerial system comprises rotating aerial means having two ports 5, 6, a ferrite or other circulator 4, and a single rotating H.F. connection 8. The port 5 is directly coupled to a port 1 of the circulator 4, the port 6 is coupled through a P.I.N. diode or other switch 7 to a port 2 of said circulator, and one side of the rotating connection 8 is coupled to a port 3 of said circulator. In operation, a system trigger 12 initiates a pulse from a transmitter 10 which is coupled through a TR cell 9 to the rotating connection 8 and thence via ports 3 and 1 of the circulator 4 to the aerial means port 5, which provides a standard directional pattern in elevation. The switch 7 being closed, early echo signals from short ranges are received via aerial means port 6, which provides an upwardly tilted directional pattern inelevation, consequently avoiding returns from clutter, and are coupled through the rotating connection 8 and the TR cell 9 to a receiver 11. After a short time, which is determined by a fixed or adjustable delay element 13 connected between the trigger 12 and the control terminal of the switch 7, said switch opens. The port 6 is then disconnected, and echo signals from longer ranges received via aerial means port 5, are coupled through the circulator, the rotating connection and the TR cell to the receiver 11.
Patent GB-1314370-A (GB)
Title: Method and apparatus for orienting a plurality of randomly  oriented dished articles
IPC: B65G47/256
Filed: 1970-08-28
Abstract: 1314370 Orienting closure caps BUCKEYE MOLDING CO 28 Aug 1970 41429/70 Heading B8S Closure caps from a hopper 11, Fig. 1, are unscrambled in a rotary drum 10 and are fed edgewise through a manifold 20 to a channel 25 through which they are blown to an orienting device 30. The latter comprises contra-rotating rolls 31, 32, Fig. 3, which nip the caps and carry them round with their flanges in contact with the rolls so that they all end up on a belt 39 flange downwards. From the belt 39 the caps 12 are fed by air jets 43, 43a, Fig. 5, down a,shoot on to cans 51. In a second embodiment, Fig. 12, belts 80, 86 hold the caps against the rolls 31, 32. Both belts may pass round a single spindle 81<SP>1</SP>, Fig. 14 (not shown). In a further embodiment, Fig. 13, the rolls are replaced by belts 28, 28<SP>1</SP>.
Patent GB-1324301-A (GB)
Title: Apparatus for handling flexible supply lines
IPC: E21F17/04
Filed: 1971-02-23
Abstract: 1324301 Supporting flexible pipes COAL INDUSTRY (PATENTS) Ltd 4 Feb 1972 [23 Feb 1971] 5226/71 Heading F2P Apparatus for handling flexible supply lines 62, which may be electric cables, water hoses, hydraulic fluid lines or combinations thereof, connected to a mining coal plough 6, for example, includes an open channel member 16 forming a trough 18, a number of displaceable resilient members 22 extending across the open mouth of the trough 18 to confine the supply lines within the trough, and a bracket 32 attached to the coal plough so as to traverse along the channel member, a portion 36 of the bracket extending into the trough 18 to displace the member or members 22 and to lay the supply lines in the trough. As shown in Fig. 1, the coal plough forms part of a mining installation including a guide 4 along which the plough is driven by a chain, sprockets 8 and motors 10. A conveyer 2 is driven by motors 14. A side wall 20, Fig. 2, of the channel member 16 is mounted on a wall of the conveyer 2 and a plurality of such members 16 are mounted endto-end to form a continuous trough 18. The base 38 of the trough includes apertures 44 to permit the exit of material falling into the trough. The flexible members 22 comprise loops formed of lengths of flexible hose secured to the other side wall 24 of the trough 18. As shown in Fig. 6, the bracket 32 comprises a flat plate portion 34 apertured for mounting on a plate 26 extending across the conveyer 2 and fixed to the coal plough 6. The ends of the supply lines 62 may be directed to deliver dust-inhibiting fluid near cutting heads 64, Fig. 1, and extend across the bracket 32, through a slot 46, Fig. 6, and passage 56 in the depending portion 36 to emerge from an opening 58 for reception in the trough 18. The depending portion 36 of the bracket includes a cover 54 having edges (60) (Fig. 7, not shown) which deflect the flexible members 22 as the plough and bracket traverse the guide 4 and trough 18. An arcuate base portion (59) of the cover 54 depresses loops formed in the supply lines 62 (Figs. 9, 10, not shown) to allow further laying of the lines. Modifications to the apparatus include a trough comprising a side plate 20 and a plurality of L-shaped wire members (124) (Figs. 17, 18, not shown) mounted thereon. The bracket may have a depending portion with horizontal and vertical deflectors (120, 122) (Figs. 11, 12, 14, not shown). The resilient loop members 22 are replaced by a sheet or sheets of resilient flexible material.
Patent GB-1330449-A (GB)
Title: Crates
IPC: B65D77/06
Filed: 1972-07-14
Abstract: 1330449 Crates BOWATER PACKAGING Ltd 14 July 1972 33092/72 Heading B8P A crate, which may be of semi-rigid plastics, has a hand hold in one or both end walls, the hole accommodating a spout on a plastics bag- The hand hole has a first portion 13 through which a cap 11 on the spout and a flange 9 can pass; a recond portion 15 corresponding to the outer dimensions of a neck 3 on the spout; and a waisted portion 17 between portions 13 and 15. When the spout is located in the portion 15 it is securely held by the flange 9 and by a larger flange 7 on the inside of the crate and to which the bag may be heat sealed. To pass the waisted portion 17 the spout is slightly deformed. The crate may be strengthened by ribs on the base and walls and may be internally partitioned.