baber/WOPTO huggingface dataset:
Patent GB-1119264-A (GB)
Title: Improvements in or relating to processes and apparatus for forging disclike workpieces
IPC: B21J13/12
Filed: 1965-11-10
Abstract: 1,119,264. Forging. GESELLSCHAFT FUR FERTIGUNGSTECHNIK UND MASCHINENBAU G.m.b.H. 10 Nov., 1965 [20 Jan., 1965], No. 47807/65. Heading B3H. A disc workpiece is forged between two pairs of swaging hammers of which one pair 2, Fig. 4, act on the ends of the workpiece 5a whilst the other pair 1, Fig. 1, act on the periphery of the workpiece which is rotated during forging. The rotation is effected by friction rollers 9 on shafts 8 driven through gearing (11) and universal joint (12), Fig. 6 (not shown). The rollers 9 are biased to grip the workpiece by spring (13), Fig. 5 (not shown), or by hydraulic or pneumatic means. A holder-up 19 biased by spring 18 or by hydraulic or pneumatic pressure acts opposite the rollers 9. The end hammers 2 have jaws with relieved portions to clear the rollers. Hammers 1 carry spring- loaded dies 1a. The hammers 1, 2 may strike simultaneously or alternately and their stroke positions are controlled to compensate for the decrease in length and increase in diameter of the workpiece to the final size 5.
Patent GB-1268290-A (GB)
Title: Improvements in and relating to ignition devices for internal combustion engines
Inventor: OISHI KAZUO
IPC: F02P3/08
Filed: 1970-10-10
Abstract: 1,268,290. Ignition systems. NIPPONDENSO K.K. Oct. 10, 1970, No.48245/70. Heading F1B. An ignition system for an internal-combustion engine comprises a capacitor 13 arranged to be charged by a D. C. converter 12 and to be discharged at the instant of ignition by way of a switching element 19 and by way of the primary winding 17a of an ignition coil 17, the secondary winding 17b of which is adapted to be connected to at least one sparking plug 18. The capacitor has a discharging circuit which includes a second capacitor 15 which is connected in series with the primary winding of the ignition coil and the switching element. A saturation choke 16 is arranged to by-pass the second capacitor and the primary winding so that the electrical energy of the second capacitor is discharged by way of the primary winding in the opposite direction to the direction of discharge of the first capacitor 13. In a modification, the transformer 17 has a two part primary winding instead of employing a switch 20a the system may be controlled by a magnetic pulse generator.
Patent GB-1246313-A (GB)
Title: Improvements in and relating to photographic films
IPC: B41M5/36
Filed: 1968-10-14
Abstract: 1,246,313. Heat-shrinkable polystyrene film. RICOH K.K. 14 Oct., 1968 [30 Oct., 1967; 28 Nov., 1967], No. 48538/68. Heading B5B. [Also in Division G2]  Shrinkable polystyrene film is made by (a) winding melt extruded and stretched film on a reel and subjecting it to 80-90‹ C. for 2-3 days; (b) immersing melt extruded and stretched film in water at 80-90‹ C. for 2-3 hours, or (c) dissolving prestretched film in a solvent and recasting the solution. Films (a) and (b) have LD and MD heat-shrinkages less than 8%; in one example the LD value is 7% and the MD value is 1%. All films wrinkle on exposure to heat (see Division G2).
Patent GB-1319135-A (GB)
Title: Damping device for absorbing shocks or impacts
IPC: F16F9/19
Filed: 1970-10-13
Abstract: 1319135 Hydraulic dampers FESTO-MASCHINENFABRIK GOTTLIEB STOLL 13 Oct 1970 [15 Oct 1969] 48548/70 Heading F2S The inward stroke of a piston 3 in a cylinder 2 is progressively damped. The cylinder 2 has a large diameter cylindrical portion 12, a tapering portion 13, and a smaller diameter cylindrical portion. Liquid flows from the front of the piston 3 to the back through the diminishing gap between the piston and cylinder, as well as through a passage 9 outside the cylinder. The extent and degree of the tapering portion may be made adjustable by employing a two-part cylinder (18, 19, Fig. 2, not shown). The throttling afforded by the passage 9 is adjustable. The impact receiving head 27 is faced with resilient material. In Fig. 3 (not shown), a return spring (32) for the piston is arranged between the head (34) and the cylinder, instead of in front of the piston.
Patent GB-1273284-A (GB)
Title: Improvements in or relating to injection lasers
Inventor: THOMPSON GEORGE HORACE BROOKE
IPC: H01L33/24
Filed: 1970-10-13
Abstract: 1,273,284. Semi-conductor lasers. STANDARD TELEPHONES & CABLES Ltd. 13 Oct., 1970, No. 48610/70. Headings H1C and H1K. In a heterostructure injection laser, either the heterojunction or the p-n junction is non- planar so as to restrict the injection current to a limited p-n junction region. The heterojunction is formed between n-type GaAlAs and GaAs, and the p-n junction is formed by selective change of conductivity to p-type by diffusion of zinc. In Fig. 1 an injection laser is formed by etching a channel in a piece of GaAlAs growing sufficient GaAs to fill the channel and so provide a filament 10, polishing to remove the GaAs not in the channel, and growing a further layer of GaAlAs into which is diffused zinc to the appropriate depth to form a planar p-n junction intersecting the GaAs. Alternative single heterostructure lasers are shown in Figs. 2a and 2b. In Fig. 2a the heterojunction between GaAs and GaAlAs layers is planar, and an intersecting non-planar p-n junction is formed by notching the GaAlAs layer at 2D before diffusing with zinc. The heterojunction shown in Fig. 2b is made non- planar by providing a central ridge in the GaAs layer before the layer of GaAlAs is grown. This layer has its upper surface polished to remove a central ridge formed by the growth process, and zinc is then diffused into the planar polished surface to form a planar p-n junction intersecting the non-planar heterojunction. The arrangements shown in Figs. 2a and 2b may be modified to provide double heterostructure lasers, Figs. 3a and 3b, which show a non-planar p-n junction and non-planar heterojunctions respectively. In Fig. 3c a GaAlAs-GaAs-GaAlAs planar heterojunction structure is grown which has a step formed in the upper surface before the diffusion of zinc. Consequentially a non- planar p-n junction is formed which extends through both heterojunctions. Other constructions are described, Figs. 3d and 3e, in which the zinc doping extends wholly across one heterojunction and partially across the other. In each of the arrangements the p-n junction has a narrow strip portion located in a region bounded by a heterojunction and having a low band gap so that injection current is concentrated in this region.
Patent GB-1065729-A (GB)
Title: Improvements in machine tools
IPC: B23Q1/70
Filed: 1963-12-10
Abstract: 1,065,729. Machine tool details. G. H. PORATH. Dec. 10, 1963 [Dec. 11, 1962], No. 48620/63. Headings B3B and B3C. A machine tool spindle journalled in a housing for rotation and axial reciprocation, comprises two axially spaced sets of circumferentially spaced orifices open in the bearing surface for the supply of pressurized bearing fluid. The spindle (13) is rotated by gearing (15), (17), and each of the orifices (21) is supplied with liquid by a metering unit (22). Each of the units extends into a radial bore (23) in housing (11), and comprises a capillary tube (31), silver soldered to a screw (29), the liquid being supplied through passages (32), (26), the latter being sealed by a plug (22). A pressure gauge (35) is connected to each orifice (21), and the liquid is drained into a reservoir (40) through passages (45), (46) and (48).
Patent GB-1199817-A (GB)
Title: A Pressure Actuated Relief Valve
Inventor: CORBIN ROBERT CLAIR
IPC: F16K17/16
Filed: 1968-10-15
Abstract: 1,199,817. Valves. KEROTEST MFG. CORP. 15 Oct., 1968, No. 48875/68. Heading F2V. A pressure relief valve comprises a closure member 68 loaded on to a seat 52 by an adjustably mounted spring 78, but held in the open position by a latch 108 secured by a frangible disc 36 disposed in the valve outlet 34, and subjected to the pressure in a container to which the valve is fitted acting via an inlet 22 and chamber 24. Excess pressure in the inlet 22 breaks the disc 36 to release the member 68 and relieve at a lower pressure governed by the spring setting. The latch 108 is formed by a ball 106 seating in a groove 104 of smaller diameter in a hanger 84 held in position by a rod 110 having a head 112 abutting the disc. The valve is assembled by placing the ball 106 in a bore 80 in the member 68, then lifting the member off the seat 52 by a jack fixed to the threaded portion 26, the jack having a rod that extends into a hexagonal receiver 74, rotating the rod to align the rod 110 with a bore 82 in the member 68, and fitting the disc in position by a nut 40.
Patent GB-994389-A (GB)
Title: Process and apparatus for filming glass sheets of irregular outline
IPC: C03C17/00
Filed: 1962-12-31
Abstract: <PICT:0994389/C1/1> <PICT:0994389/C1/2> <PICT:0994389/C1/3> A transparent metal oxide film is produced on a surface of a glass or like vitreous sheet of irregular outline by heating the surface, uniformly spraying the surface with a solution of a film-forming metal compound, and spraying a preselected portion only with a burst of a solution of a film-forming metal compound to increase the film thickness of that portion. A glass sheet 11, having a trapezoid outline with its longitudinal edges 12, 13 parallel and its transverse edges 14, 15 non-parallel and having its longitudinal edges 12, 13 coated with a silver frit slurry to form after firing a pair of electrodes 16, 17, is suspended by conventional means from a carriage 29 running on a monorail 27. The sheet 11 is first heated in an electric furnace 20 and then passes on towards a spraying mechanism 21 where it is evenly sprayed with a 30% solution of tin tetrachloride in isopropyl alcohol by three spray guns 31, 32, 33. The spray guns 31, 32, 33 which are mounted on brackets 34 to a rod 35 are operated by compressed air and actuated by a photo-electric cell circuit that detects the arrival of the leading edge of the glass sheet 11. Auxiliary compressed air-operated spray guns 44, 45 mounted on brackets 48 to rods 46, 47 are momentarily activated when an arm 54 slides over electrical contact switches 55, 56 respectively. This provides a burst of tin tetrachloride solution spray on each of two areas 50, 51 so producing a thickened film on these areas. The thickened film has a lower electrical resistance than the rest of the film and prevents overheating of these areas when current is applied to the electrodes 16, 17 of the finished sheet 11.
Patent GB-1032859-A (GB)
Title: Cooling device
IPC: A23G9/12
Filed: 1963-12-13
Abstract: 1,032,859. Cooling vessels for drinking glasses; jugs &c. A. M. STONER. Dec. 13, 1963 [Dec. 17, 1962; Oct. 25, 1963], No. 49410/63. Heading A4A. [Also in Division F4] A device for cooling the contents of a removable glass or pitcher comprises a double-walled aluminium container 10 which has a liquid refrigerant 15 between its walls and is suspended within an insulating container 13 by its rim 11. The container 10 is placed upside-down in a refrigerator to solidify the refrigerant 15 which is prevented from slipping downwardly between the walls of the container by a shoulder 33 formed in the outer wall thereof as the refrigerant begins to melt upon introduction of a glass 14 containing liquid to be cooled. Spaced projections are provided on the outer wall of container 10 at and below the shoulder 33 to prevent the containers from sticking together when stacked for storage in a refrigerator. The refrigerant may be a glycerine-water solution and occupies about 80% of the space between the walls. In the embodiment of Fig. 8 (not shown) the double walled container 111 is formed of polyethylene, the inner wall 130 being thinner and consequently more flexible than the outer wall 117 which is smoothly tapering. The outer insulated container comprises a stainless steel vessel 120 to the upper edge of which is secured a plastics ring 121 having a shoulder 114 for supporting the lip of container 111. The vessel 120 is lined with foamed plastics material 128. The vessel to be cooled comprises a pitcher 110 having a lid 150, stirrer 152 and spout 133. In each embodiment the walls of the double walled container taper at an angle of between 5 degrees and 15 degrees with respect to their axes.
Patent GB-1139212-A (GB)
Title: Improvements in screw-type extruding machines
Inventor: HOBHOUSE HENRY
IPC: B29C48/38
Filed: 1964-12-04
Abstract: 1,139,212. Extrusion moulding machines. H. HOBHOUSE. 28 Feb., 1966 [4 Dec., 1964], No. 49561/64. Heading B5A. In an extrusion moulding machine for extruding thermoplastic materials such as rubber, plastics, pharmaceutical preparations or foodstuffs, screw 4 is driven by an hydraulic motor 3 supplied with fluid from a pump 2 via a flow control valve 5, the exhaust fluid from motor 3 passing to a motor 9 via a control valve 7. Motor 9 drives a feed-screw 10 within hopper 17 and the exhaust fluid therefrom passes to a reservoir 1 via a control valve 12. A further control valve 13 connected to fluid delivered to motor 3 by means of conduit 14, controls the exhaust fluid from motor 9 by communicating with valve 12 and also communicates both with a recirculation port in hopper 17 and the extrusion barrel by means of a by-pass 16. Initially control valve 13 is inoperative and by-pass 16 is closed, the exhaust from motor 3 flowing freely along conduits 6, 8 and 11 to reservoir 1. As material is fed to screw 4 resistance to its movement increases and pressure in conduit 15 is likewise increased until at a predetermined value valve 13 and by-pass 16 are opened. With valve 13 open, valve 12 is controlled in such a way, and hence the exhaust fluid from motor 9, that as pressure in conduit 15 increases the speed of motor 9 decreases and vice versa. Further, regulation depending on the condition of the material is provided by a thermocouple 19 which controls displacement of pump 2 and hence speed of rotation of motor 3 by a link including a signal amplifier 20 and an actuator 21. A valve 18 may relate delivery by motor 9 and screw 10 to output of screw 4 and also maintain a positive pressure of delivered material in hopper 17. In a second embodiment, Fig. 2 (not shown), feed to screw 4 is controlled by the condition of the extruded material, e.g. shear strength, tensile strength or viscosity. By-pass 16 and thermocouple 19 are dispensed with, and a take-off device (23) feeds the extrudate to a sensing device (24) which may be linked by a conduit (25) to provide a biasing action on valve (5) or alternatively control pump (2) via a signal amplifier and actuator. In particular, device (24) may comprise a rotary chopper to determine the shear strength of, for example, animal foodstuffs. The use of the machine for injection moulding is also mentioned when during mould filling, by-pass 16, Fig. 1, is interrupted, output from pump 2 is adjusted to a maximum and control valve 5 is by-passed. Either valve 13 is adjusted to determine the maximum pressure required for injection or, alternatively, line 14 is interrupted by a valve 22. The speed of screw 4 may be boosted by incorporating a fluid pressure accumulator.
Patent GB-1170423-A (GB)
Title: A process of Moving Storage Tanks
Inventor: PINDER MICHAEL ANTONY
IPC: B60V3/02
Filed: 1966-11-04
Abstract: 1,170,423. Moving storage tanks on air cushions. ESSO RESEARCH & ENG. CO. 14 Sept., 1967 [4 Nov., 1966], No. 49587/66. Heading B7K. To facilitate movement of a storage tank to or from a site the tank 1 has a flexible skirt, of interconnected elements 3 forming convolutions that are clamped to the tank by a pre-tensioned inflatable hose 5 passed through loops 4 attached to each skirt element. A further clamping device 9, 10 retained in position by clamps 20 hooked under the rim of the tank is attached at 8 to each web portion of the convoluted skirt. Some elements 11 are specially adapted to provide access to tank panels 17 and certain other elements 12 are adapted for connection to a flexible hose connected to air compressors (not shown) movable with the tank.
Patent GB-1114287-A (GB)
Title: Improved textile fiber drafting apron
IPC: D01H5/86
Filed: 1965-11-23
Abstract: A textile fibre drafting apron having inner and outer surface layers of rubber has an additive included in the composition of the inner layer to obtain such frictional properties that the apron will grip on the surface of a driving roll but will slide without vibration over a nose bar.  The additive comprises an alkali metal salt containing 10-16 carbon atoms and consisting of one or more aliphatic sulphates and is present in the reange of from 1 to 6 parts by weight per 100 parts of rubber.  Preferably the rubber of the inner layer comprises butadiene-acrylonitrile, bone glue, plasticizer, sulphur curing agent, fillers and other additives.
Patent GB-1079546-A (GB)
Title: Improvements in static electrical inverters
IPC: H02M7/51
Filed: 1964-12-08
Abstract: 1,079,546. Inverting. ALLMANNA SVENKSA ELEKTRISKA A.B. Dec. 8, 1964 [Dec. 9, 1963], No. 49848/64. Heading H2F. An inverter in a H.V.D.C. power transmission system has a firing angle determined by the voltage on the A.C. side (measured at 8) the current in the D.C. line (measured at 7) and the desired commutation margin. The commutation margin must be sufficient to prevent commutation failure if the firing point is delayed either by transients or by increase of frequency on the A.C. side, but the margin should be small to reduce the reactive power requirements and firing should be delayed if the A.C. frequency decreases, since it is shown that a 1 c/s change (at 50 c/s) may vary the commutation margin by 8 degrees. The invention provides resonant circuits 11, 12 tuned to the nominal A.C. frequency and arranged so that a voltage is developed in transformer 13 and rectified at 14 if the frequency varies or transients occur. The rectifier voltage appears across resistor 19 in series with the controlling voltages from units 7 and 8 and the control circuit of transistor 5. To prevent power dissipation in resistor 19 under steady state conditions, a Zener diode 20 is connected in series with it, so that current flows only when disturbances above a certain magnitude are present. Frequency sensitive relay 21 reverses the connections to resistor 19 so as to retard the firing point if the A.C. frequency falls.
Patent GB-1522370-A (GB)
Title: Method of manufacturing preforms for gramophone records
IPC: G11B3/70
Filed: 1975-12-04
Abstract: 1522370 Gramophone records J F ROELOFFZEN 30 Nov 1976 [4 Dec 1975] 49914/75 Heading G5R A blank from which gramophone records are pressed comprises a core of flax fibres bound by a synthetic material and coated with a layer of P.V.C. A number of layers of randomly arranged flax fibres are compressed and after impregnation with a dispersion of synthetic material are heated and further compressed to form the record core which can be formed in strips 1 m. wide. A P.V.C. powder is then applied to both sides of the base and formed into top and bottom coating layers by heating and compressing. The strip is then cut into strips 32 cms. wide which are heated and profiled to form the inner and outer record rims and centre hole. The profiled strips are stored until required for conversion into records when they are preheated, pressed, cooled, labelled and then punched to obtain the records.
Patent GB-1167939-A (GB)
Title: A Thread Rolling Machine.
IPC: B21H3/04
Filed: 1967-11-02
Abstract: 1,167,939. Rolling threads. J. M. PLAGEMANN, [trading as PEE-WEE MASCHINEN-UND APPPARATEBAU WERNER PLAGEMANN]. 2 Nov., 1967 [2 Nov., 1966], No. 49941/67. Heading B3M. [Also in Division F2] A thread rolling machine has a cageless roller bearing, an inner race of which is secured to a spindle and an outer race of which has rollers retained therein so as to form a unit which may be removed from the inner race. In an embodiment, a front bearing 2a, Figs. 1 and 1a, supports a spindle 1 having rolling-tools 4 mounted thereon. When the rolling-tools are changed, the unit comprising the outer race 14 and the rollers 16 is removed as shown in Fig. 1a, the rollers being held radially by means of a spring- ring 18 which is forced outwardly. Grooves 17, Fig. 2, are formed in the rollers so as to receive the ring 18 therein and the outer race is provided with radially-inwardly directed flanges 15. In other embodiments, a slot is provided in the inner or outer race to receive a ring which axially locates the rollers, and the rollers are provided at each end with an extension of smaller diameter, the rollers being retained by "L"-shaped or "T"-shaped rings which cooperate with said extensions.
Patent GB-1463607-A (GB)
Title: Thermographic copying process and apparatus
IPC: G03B27/30
Filed: 1974-11-19
Abstract: 1463607 Thermographic copiers XEROX CORP 19 Nov 1974 [27 Dec 1973] 49976/74 Heading G2A In a method of making a copy of an original 64 by a thermographic process, a heat-sensitive member 48 having a delayed tack adhesive coating, upon which a heat image is formed by exposure to a heat source 36, is passed first to a developing station 38, 40 and then back by reversing its direction of motion to the heating station where the image is either transfixed to a copy sheet (66) see Figs. (not shown) or fused to the member 48. A manually rotated shaft 58 bearing a cam 60 acts to raise a plate 50 against springs 56 to press the parts 48, 64, (66) against a transparent sheet 34.
Patent GB-1096463-A (GB)
Title: Improvements relating to vehicle mirrors
Inventor: NEALE DAVID WARWICK
IPC: B60R1/06
Filed: 1964-12-10
Abstract: 1,096,463. Vehicle mirrors. RAYDYOT Ltd. Oct. 22, 1965 [Dec. 10, 1964], No. 50282/64. Heading B7J. A vehicle mirror comprises a generally paraboloidal or conical casing 10 of spun or drawn metal secured to a die-cast foot 11 for attachment to the vehicle wing (not shown) and provided with a mirror head comprising a metal disc 20, a silvered glass disc 19 and a foamed plastics block 21 held together by a beading 22, the mirror head being disposed in a plastics cup 12, and a ball-joint being provided between the head and the cup base 16 and comprising a part spherical recess at the centre of the cup base 16, engaged by a cup washer 24 engaging a part spherical ball joint part of the metal disc 20, engaged by a second cup washer 25 which is engageable by a nut 26 on a rod 23 when a screw nut 28 is screwed on to the rod 23 so as to clamp the mirror head in a chosen position. The rod 23 is flattened at 27 to key into the base of the cup 12 and prevent rotation of the rod. A metal spacing tube 18 engages a spigot part 17 of the cup 12. The cup 12 has a U- section rim 13 which embraces the rim of the casing 10 and which has a projection between the limbs of the U engaging a notch 14, Fig. 2 (not shown), to locate the cup angularly. The cup 12 is ribbed at 15. Spring washers (32) may be threaded over the rod.