baber/WOPTO huggingface dataset:
Patent GB-1148426-A (GB)
Title: Electron beam apparatus including filament current control means
IPC: H01J29/52
Filed: 1967-12-15
Abstract: 1,148,426. Automatic current control of electron beam apparatus. INTERNATIONAL BUSINESS MACHINES CORP. Dec. 15, 1967 [Jan.13, 1967], No.57022/67. Heading G3R. Electron beam apparatus is operated at a desired point on the beam current/filament current characteristic by superimposing on the normal filament working current a cyclic variation of constant amplitude which is small relative to the normal working current, detecting the consequent change in beam current, comparing this change with a reference representative of the change corresponding to operation at the desired point and using the error signal to vary the filament working current to maintain the change at the reference value. As shown the filament 14 of the apparatus 11 is fed from a D. C. supply 31 through parallel-connected transistors 33, 34 which respectively contribute the cyclical and steady components of the filament current, the former component being produced by an oscillator 44 controlling the base of transistor 33. The cyclical beam current change produced by the varying filament current, Fig. 2 (not shown) is detected by a resistor 48 connected between the filament 14 and the high voltage supply 53, the A. C. signal so obtained being amplified, rectified and smoothed in members 59, 60 to produce a D. C. voltage which is applied to a summing amplifier 61 for comparison with a reference voltage obtained from members 66, 67. The error signal is fed through an operating amplifier 69 to the base of transistor 34 to control the steady component of the filament current in accordance with the beam current change. The above-described control system ensures that the most efficient operation of the filament is obtained irrespective of changes in the characteristic due to filament ageing or replacement. To prevent the control system from locking on to the lower (undesired) one (77) of its two stable operating points, Fig. 3 (not shown), the amplifier 61 is provided with a third signal from a terminal 81 through a switch 79 whose state is dependent on the current carried by the transistor 34 (via terminals 82, 84). For values of this current below a predetermined magnitude the switch 79 is closed to apply the third signal to the amplifier 61, but upon reaching this magnitude the switch 79 opens to remove the signal and so allow the system to lock on to the desired operating point (76).
Patent GB-1160920-A (GB)
Title: Improvements in Electrical Converters comprising Thyristors
IPC: H02M1/088
Filed: 1966-12-23
Abstract: 1,160,920. Converting. ALLM€NNA SVENSKA ELEKTRISKA A.B. 23 Dec., 1966 [30 Dec., 1965], No. 57637/66. Heading H2F. A converter comprising a rectifier bridge in which each branch comprises n series-connected thyristors, each shunted by a series R.C. network, is characterized in that the capacitors C 1  are of the order of magnitude n/x - 1 times the leakage capacitance measured at the rectifying branch in question where n is the number of series connected thyristors in the branch, and x is the ratio between the allowable voltages across a thyristor during and before ignition. The resistors R 1  are so chosen that the time constant of each network is less than the time interval between the instant of ignition of the associated thyristor and that of adjacent thyristors in the sequence. The time displacement in the ignition instants may be determined by appropriately selecting the thyristors or by including delay elements in the ignition circuit. An inductor may be included in series with each rectifier and two chains may be connected in parallel, Fig. 5 (not shown).
Patent GB-1200067-A (GB)
Title: Improvements relating to fastenings for hinged gates, especially applicable to hand trucks
IPC: A47F5/13
Filed: 1967-12-20
Abstract: 1,200,067. Hand trucks. H. C. SLINGSBY Ltd., and G. SLINGSBY. 18 Dec., 1968 [20 Dec., 1967], No. 57766/67. Heading B7B. [Also in Divisions E1-2] A light hand truck having open work sides with tubular main members, push handles at each end and wheels, at least some of which are of castor type, has the top half of one side formed as a gate which is held in its closed position by a device (see Division E2) comprising a cylindrical member 3 slidable and rotatable on the gate post 2 and having a lug 8 which abuts the gate 1 when a notch 5 on the member engages over a projection 6 on the gatepost 2. A second notch 5 is provided which co-operates with the projection 6 (Fig. 4, not shown) when the lug has been swung away from the gate to allow it to open. A lug 9 fixed to the gate 1 abuts the gatepost 2 to prevent the gate swinging in beyond the gatepost. The gate may be hinged vertically instead of horizontally as shown.
Patent GB-1345947-A (GB)
Title: Sulphonamide derivative and preparation thereof
IPC: C07D279/30
Filed: 1971-12-14
Abstract: 1345947 Phenothiazine derivative ONO PHARMACEUTICAL CO Ltd 14 Dec 1971 [26 Dec 1970] 58109/71 Heading C2C 10 - Carbamoylphenothiazine - 3 - sulphonamide (an anticonvulsant) is prepared by reacting phenothiazine-3-sulphonamide with phosgene and reacting the product with ammonia. The preparation of the starting material and 2 - formamido - 2<SP>1 </SP>- nitro - 4<SP>1</SP> - sulphamoyldiphenyl sulphide is described.
Patent GB-1272949-A (GB)
Title: Improvements in the processing of rubber
IPC: B29C37/00
Filed: 1969-12-03
Abstract: 1,272,949. Reducing the surface tackiness of rubber, DUNLOP HOLDINGS Ltd. 3 Dec., 1969 [4 Dec., 1968], No. 58956/69. Heading C3E. The surfaces of uncured or semicured masses of rubber are treated with a powder comprising a chlorinated hydrocarbon so as to reduce the adhesion between the surfaces. Suitable materials are chlorinated paraffin wax and chlorinated rubber.
Patent GB-1278578-A (GB)
Title: Vehicle windscreen wiping mechanisms
Inventor: THOMAS DAVID
IPC: B60S1/34
Filed: 1968-12-13
Abstract: 1278578 Windscreen wipers JOSEPH LUCAS (INDUSTRIES) Ltd 27 Oct 1969 [13 Dec 1968] 59423/68 Heading A4F A mechanism for controlling the operating cycle of a wiper blade which is mounted rotatably on a wiper arm comprises an oscillatory driven member 13, a wiper arm 18 mounted on the member, a wiper blade carrier 21 fixed to a spindle 20 pivotally mounted on the arm 18, spindle 20 and driven member 13 being parallel, a pinion 22 fixed to the spindle 20, a fixed pinion 17 and a further pinion 24 pivotally mounted on the arm 18 with its pivot axis parallel to the axes of spindle 20 and member 13 and in mesh with both the other pinions, so that as the arm 18 oscillates, the blade holder moves angularly relative to the arm.  As described, member 13 is driven by a reversible electric motor through a rack 10 and pinion 12 mechanism. Pinion 12 moves through 90 degrees in alternate directions and the blade carrier moves through 180 degrees about the axis of spindle 20.
Patent GB-1217281-A (GB)
Title: Magnetic cascade development apparatus
IPC: G03G15/09
Filed: 1968-12-19
Abstract: 1,217,281. Cascade developing apparatus. RANK XEROX Ltd. Dec.19, 1968 [Dec.26, 1967], No.60361/68. Heading G2H. In a cascade apparatus for developer containing a magnetic carrier, the developer is collected at the lower end of the development zone on a moving belt to which the developer is attracted by a magnetic field. The magnetic field may be produced by a magnetic roller 22 over which the belt 18 passes. The developer is then transported to the upper region of the development zone by the belt to which the developer adheres through the provision of a magnetic plate 24 comprising a plurality of magnets Fig. 3 (not shown). An upper roller 20 may also be magnetic. The developer is removed from the belt by a blade 26 to fall on to the photoconductive surface 28. A plurality of such development stations may be employed, for example in colour reproduction Fig.4  (not shown) using an endless xerographic belt (38).
Patent GB-1418872-A (GB)
Title: Sprayers
IPC: F04B11/00
Filed: 1971-12-31
Abstract: 1418872 Reciprocating pumps DORMAN SPRAYER CO Ltd 1 Jan 1973 [31 Dec 1971] 61064/71 Heading F 1 A A manually-operated sprayer comprises a double-acting bucket piston 3 reciprocable in a cylinder 1 by an operator holding hand grips 19, 20, the piston having a check valve-controlled through-passage 9 connected by a tube 8 to a lance comprising coaxial tubes 14, 15 defining an air chamber 12 open to tube 8 and closed adjacent a nozzle 11 connected to tube 8 via tube 15, air chamber 12 functioning to maintain a continuous spray from nozzle 11 during reversal of stroke of the piston. Tube 15 is removably located within tube 14 by a bush 16 located by removable nozzle 11. The lance assembly may be fixed to the pump or removably attached by flange 18. The pump inlet 2 has a ball-valve 6.
Patent GB-1198219-A (GB)
Title: Preparation of Pentachlorophenol
IPC: C07C37/62
Filed: 1968-12-23
Abstract: 1,198,219. Pentachlorophenol. MONSANTO CO. 23 Dec., 1968 [28 Dec., 1967], No. 61079/68. Heading C2C. Pentachlorophenol is made by treating phenol or a lower chlorophenol with elementary chlorine in the presence of metallic aluminium (or aluminium chloride) and metallic copper. Examples are given. The colour of the product may be improved by a brief treatment with steam or by addition of a small proportion of an alkanol of 1-10 carbon atoms.
Patent GB-1286217-A (GB)
Title: Improvements relating to steering columns for vehicles
IPC: B62D1/18
Filed: 1970-12-31
Abstract: 1286217 Steering columns DAIMLER BENZ AG 31 Dec 1970 [21 Jan 1970] 62019/70 Heading B7H An adjustable length steering column comprises a tube 3 and sleeve 6 in which a rod 4 carrying a further sleeve 9 is slidably inserted, external splines 8 on the sleeve 9 engage via rollers 11 grooves in the sleeve 6, to allow relative axial movement whilst preventing relative rotation of the tube 3 and rod 4, the rollers serving to reduce the frictional forces opposing the axial movement. Sleeve 9 is slidably mounted on rod 4 but is fixed against relative rotation by spline and grooves (10) (Fig. 2, not shown) and is urged against a resilient stop 15 on rod 4 by a spring 14. On extending the column initially sleeves 6 and 9 undergo relative movement until a stop 17 abuts an end portion 12 of sleeve 9 whereupon sleeves 6 and 9 moved together, against the action of spring 14, relative to rod 4.
Patent GB-646391-A (GB)
Abstract: 646,391. Measures of capacity. ENGESTROM, M. F. B. Nov. 24, 1947, No. 31148. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 27, 1948] [Class 106 (v)] A measure for solids and liquids includes an elongated base member 2 having at least a closed upper end 3, a sleeve 7 adapted to slide upon said elongated member 2 to form an adjustable measure in that portion 8 standing proud of the top of the said base 2, a plurality of labels 5 for indicating different substances and a plurality of corresponding scales 6 marked in quantities by weight o f the respective substances arranged around the measure so that the measure may be adjusted for the required quantity of any one of the substances indicated on the labels 5 by moving the sleeve 7 axially upon the base 2. The scales and labels are preferably removably mounted on the base member 2, but the labels may, if the base and the sleeve 7 are of polygonal cross-section, be arranged on the sleeve. The sleeve 7 may be of transparent material and the scale lines may be formed as notchlike recesses in the surface of the base member 2.
Patent GB-664170-A (GB)
IPC: F16B15/08
Abstract: 664,170. Making staples. CURZON, G. H. June 24, 1949 [Jan. 27, 1949], No. 2288/49. Classes 83 (ii) and 83 (iv). [Also in Group XXV] Shear-blades.-Staples are formed from sheet stock by making a series of discontinuous cuts a<SP>1 </SP>and then pressing the distorted sections b back into the plane of the sheet which is then cut to form a strip of staples with sharpened edges b<SP>1 </SP>connected by one or more ribs c left unsevered. Finally the strip is bent into channel form. For heavier staples the original sheet may be grooved on each side as by rolling, to facilitate making the cuts a<SP>1</SP>. The cuts may be made by passing the sheet through disc cutters with shallow notches d<SP>2</SP>, Fig. 11, that leave the connecting rib portions. alternating with deeper notches d<SP>3</SP> that leave wider unsevered portions that are subsequently removed to divide the sheet into a number of staple strips.
Patent GB-664374-A (GB)
IPC: B41F1/60
Abstract: 664,374. Friction clutches; machinery guards. RIDINGTON, W. E. Nov. 1, 1949, No. 25683/48. Classes 80 (ii) and 80 (iv). A clutch for platen printing-presses, to be interposed between a driving flywheel and a driven part, e.g. 4 of the machine, comprises friction shoes 11 pivoted at one end 12 on a freely-mounted sleeve 3 fast to the driven wheel 4, and moved radially outwards into engagement with a driving drum 2 fast on a flywheel-shaft 1, by axial movement of a coned sleeve 6 which tilts levers 17, pivoted at 16 to the sleeve 3, and swinging in the same plane as that of the shoes 11 to act on the latter at points intermediate their ends through struts 18 adjustably screwed into the levers 17, which latter bear on the actuating coned-sleeve 6 through balls 21. The sleeve 6 has a cylindrical part adjacent its coned end for returning the levers 17 in the engaged position. Springs 15 disengage the shoes. The drum 2 may be formed as a pulley driven by belt from the motor. The driven sleeve 3 carries the drum 5 of a brake the band of which is applied after clutch disengagement by a projection 28, Fig. 3, on a manually-rocked shaft 24 operating the clutchcone 6 through a fork 25. To provide for automatic clutch release in response to obstruction of the machine-guard (not shown), the latter operates a trip, Fig. 4, by connection to an arm 40 of a spindle 39 having a flat which is turned by the guard-movement into registry with a pair of balls 38 permitting them to release a shoulder 35 on a plunger 30, whereupon loading springs 34 thrust the plunger outwardly and an adjustable tappet 31 on its end strikes an arm 29 on the clutch-control shaft 24, thus disengaging the clutch and applying the brake to stop the machine, which remains in this condition until the guard obstruction is removed and the plunger 30 is re-set by manually re-engaging the clutch.
Patent GB-670917-A (GB)
Abstract: 670,917. Contacts. GENERAL MOTORS CORPORATION. March 30, 1950. [April 2, 1949] No. 7950/50. Class 38 (v). [Also in Group XXII] The contact lever of an ignition interrupter is made from a sheet metal blank, Fig. 5, by folding this about its axis of symmetry, Fig. 7, and then bending the two leaves 26 outwardly across the holes 25 to form flanges 28 situated in a plane perpendicular to the leaves. A hole 31, Fig. 8, consisting of two half-holes 25 is thus formed and a slotted rivet 46 is then inserted into the hole, so that its legs straddle the leaves 26. It is then spot welded to the leaves. The flanges extend to the end of the lever where they form ears 30 adapted to receive a tungsten contact disc 40. The assembly is next copper plated and together with the contact disc is heated in a hydrogen atmosphere to bond the contact and the rivet to the lever by the plating copper. A fibre bushing 42 is next pushed into the flanges 24 and secured by turning the edges in. Finally, a rubbing block 44 and a leaf spring 45 with holes fitting over, the rivet 46 are assembled and held by peening over the edge of the rivet. The rubbing block rests on the pad formed by the flanges 28 which have turned up edges 29.
Patent GB-2027341-A (GB)
Title: Makeup foundations containing fumed silica
IPC: A61K8/25
Filed: 1978-08-08
Abstract: A cosmetic composition comprises an aqueous make-up foundation, e.g. an oil-in-water emulsion or water-in-oil emulsion, containing 0.03 to 10% by weight of hydrophobic fumed silica and 0.03 to 0.5% by weight of hydrophilic fumed silica. A dry pigment system for incorporation into such compositions contains 5 to 90% by weight of talc and 5 to 49% by weight of pigments (e.g. titanium dioxide, zinc oxide, ferric oxide or chromic oxide) in addition to the hydrophilic fumed silica and hydrophobic fumed silica.
Patent GB-2005155-A (GB)
Title: Improved optical recording medium
IPC: G11B7/24062
Filed: 1978-08-15
Abstract: A medium to record light with a spatial modulation pattern comprises a plastic substrate layer, a thin, smooth, glossy, hard inert coating layer free of macroscopic and microscopic imperfections overlying the substrate layer, a light reflecting layer thereover and a top light absorbtive layer. Accordingly a coating of acrylic latex, epoxy paint without pigment, dichromated gelatin, or various synthetic varnishes, underlies the reflecting layer and is found to improve the effective quality of the substrate surface. Various organic dyes may comprise the light absorptive layer. A thermal barrier layer of silica may be applied between the surface- improving layer and the reflective layer.
Patent GB-2004641-A (GB)
Title: Improvements in or relating to a flue arrangement
IPC: F23J13/00
Filed: 1978-09-29
Abstract: A starter box (1) on which a gas fire (10) is to be mounted to direct fumes to a flue (7) has walls comprising two spaced sheets of galvanised metal so that the outer surface of the starter box does not get unduly hot. <IMAGE>
Patent GB-2009867-A (GB)
Title: Seals
IPC: B60T17/22
Filed: 1978-11-29
Abstract: In a method of placing an elastomeric annular piston seal (19) beyond an irregularity (22) in the wall of a bore (14) without damaging the seal, the seal (19) is partially accommodated in a groove (28) on the operable diameter portion (26) of the piston (15) so that when the piston (15) is inserted into a stepped bore (11) the seal (19) moves freely past and is placed beyond an aperture (22). When the seal (19) is beyond the irregularity in the form of the aperture (22) it is moved out of the groove (28) and into its operable position by relative movement of the piston (15) past an abutment (37) which engages the seal (19) and moves it out of the groove (28) and into its operative position as shown. <IMAGE>
Patent GB-2015350-A (GB)
Title: Feeding bottle teat
IPC: A61J11/00
Filed: 1979-02-13
Abstract: A baby's feeding bottle teat has the delivery opening in the form of a slit 3 in a non-convex (e.g. planar or concave) surface at the end of the teat. This allows a delivery rate which, in the minimum flow position, is practically independent of the baby's sucking effort but which in the full flow position is subject to a clearly defined increase for increasing suction effort. Markings, 5a, 5b, 5c are provided on the teat to allow regulation of the flow rate by judgement of the orientation of the slit 3 with respect to the lips. <IMAGE>
Patent GB-2042471-A (GB)
Title: Sampling non-homogenous liquids
IPC: G01N1/20
Filed: 1979-03-23
Abstract: In order to estimate the water content of oil in a pipeline (7), 20 samples are fed in succession to a tank (1) and allowed to settle when the tank is sufficiently full. Most of the water collects in a neck (12) and is drawn off with the mixed oil into a sample bomb (13) for analysis. The remaining contents of the tank are agitated to disperse the water therein as uniformly as possible by circulation by means of a mixing pump (14) and then another sample is taken in the second sample bomb (16) for analysis. The overall water content can then be estimated from the formula <IMAGE> where W is the water content by volume, w1 and w2 are the water contents by volume of the two samples respectively, v1 is the volume of the first sample and V is the volume of liquid collected in the tank. The apparatus includes a second tank (2) which is filled while the contents of the tank (1) settle and are analysed, and a source of flushing oil (18) to clean the system after analysis. <IMAGE>
Patent GB-2018358-A (GB)
Title: Exhaust-gas turbocharged internal combustion engine
IPC: F02B37/00
Filed: 1979-04-05
Abstract: Condensed water from the charge air cooler (8) is ducted to a storage tank (12) and then fed by a feed pipe (14) into the exhaust pipe (5) of the engine at a location upstream of the supercharger turbine (6). The condensed water is thus prevented from entering the engine but is vaporised in the exhaust gas thereby lowering the temperature and increasing the mass flow which avoids corrosion of the turbine and makes it more efficient. The condensed water flows by virtue of the difference in pressure between a constriction in the exhaust pipe (5) and the charge air line (7) or is delivered by a pump. <IMAGE>
Patent GB-2034436-A (GB)
Title: Elastomeric stack spring with viscous or friction damping
IPC: E04B1/36
Filed: 1979-05-30
Abstract: A resilient mounting having high internal damping comprises a stack of parallel metal sheets having elastomer 53, 69 vulcanized between them and, within the elastomer, at least one chamber filled with energy absorbing material, for example, a viscous fluid, pitch, tar, sand, or visco-elastic elastomer 54. The chamber may include flow guides, or interdigitated plates. The plates may extend in a direction perpendicular to those shown. <IMAGE>
Patent GB-2064870-A (GB)
Title: A combined magnetic switch and catch
IPC: E05C19/16
Filed: 1979-11-21
Abstract: A magnetic catch is combined with a switch and the catch portion comprises a permanent magnet (1), a fixed ferromagnetic plate (2) and a freely detachable ferromagnetic plate (6) which may be held attracted to a surface of the permanent magnet (1). A switch is installed at the outer surface of the fixed ferromagnetic plate (2) and has a fixed contact plate (8) and a movable contact plate (9). The plate (9) is provided with an insulating pin (11) which abuts against a projection (5) of the detachable ferromagnetic plate (6), whereby the on/off action of the switch corresponds to the separation and engagement of the detachable ferromagnetic plate (6) from and with the permanent magnet (1). <IMAGE>
Patent GB-2044076-A (GB)
Title: Stackable cups
IPC: B65D1/26
Filed: 1980-01-18
Abstract: A stackable thin-walled cup is designed to absorb telescoping loads with less risk of jamming and is for use in beverage dispensing machines with an ingredient retained in the base 11 of the cup 1 which has an inward projecting annulus 6 with upper and lower surfaces 8 and 7 arranged to cooperate with surfaces 4 and 5 of an outwardly projecting annulus at the base of a second stacked cup. Surfaces 4 and 7 form a seal to prevent loss of ingredient and the two surfaces are held in contact by a force due to abutment between surfaces 9 and 10 of respective cups. By suitable difference in linear dimension between surface 7 and abutment 10 and surface 4 and abutment 9 a force is produced by tension derived from the cup walls to hold the surfaces 4 and 7 together. Telescopic shock loads produce compression on the abutments 9 and 10 and momentarily separate surfaces 4 and 7 which re-engage on removal of the load. <IMAGE>
Patent GB-2069627-A (GB)
Title: Turntable support bearings
IPC: F16C33/20
Filed: 1980-02-14
Abstract: A turntable is supported by the engagement between a pair of surfaces which slide with respect to each other as the deck of the turntable rotates. One of the surfaces is fibrous and the other is a material, e.g. P.T.FR, which has a relatively low coefficient of friction. Preferably, one of the surfaces is fixed to the deck 6 and the other is the upper surface of an intermediate component 8 which can rotate relative to the deck and relative to a base 4 of the turntable. The lower surface of the intermediate component can slide on the upper surface of the base as the turntable rotates, one of these latter surfaces being fibrous and the other being of a material having a relatively low coefficient of friction. <IMAGE>
Patent GB-2043300-A (GB)
Title: Engraving apparatus and method
IPC: G05B19/40
Filed: 1980-02-14
Abstract: A workpiece is engraved by a tool caused to move stepwise in directions transverse to a workpiece. Signals controlling the tool are derived from a computer or an intelligent computer peripheral such as a keyboard/video unit including an interactive programme. Preferably the signals are pulses driving stepping motors. <IMAGE>