baber/WOPTO huggingface dataset:
Patent GB-819906-A (GB)
Title: Improvements relating to conveyors
IPC: B65G15/60
Filed: 1956-03-02
Abstract: 819,906. Endless belt conveyers. THOMPSON (WOLVERHAMPTON) Ltd., J., and THOMAS, J. R. Feb. 28, 1957 [March 2, 1956], No. 6538/56. Class 78 (1.). In a belt conveyer for use in quenching furnace ash wherein the belt 12 is caused to pass through a trough containing quenching liquid and to assume a troughed form with its edges contacting the trough walls 24, one or more inlet ports 20 are provided in the base 11 of the trough and are connected with a supply of liquid at a higher pressure than that in the trough, so that liquid flows from the supply into the space below the belt 12 and assists in maintaining a clearance space between the belt and the trough bottom 11. The liquid, e.g. water, is supplied to a number of ports 20 by a tank 21 through pipes 22 and 23,'water being returned to the tank 21 by a pump 33 whose inlet is connected to a strainer unit 36 positioned in a recess 28 in one of the side walls 24 communicating with the space above the belt 12. The inlets 20 are arranged near the middle of the length of the working portion of the belt 12 and rubber or polyvinyl chloride strips 30 and 32 are provided along both trough walls to seal the belt edges, as described in Specification 819,905, to cause the liquid entering the trough from the ports 20 to pass along the trough under the belt towards the ends of the trough, so that pressure is exerted upwardly on the belt over the whole of its working length, gradually diminishing towards the ends of the trough. Raised ribs 18 of convex section are provided in the base of the trough to reduce friction if the belt should contact the trough bottom. Specification 326,392, [Class 78 (i)], also is referred to.
Patent GB-452568-A (GB)
Title: Improvements relating to the propulsion of scooters
Inventor: SABAEFF CLEMENT ANTOINE ALFRED GEORGE
IPC: B62M1/24
Filed: 1936-03-04
Abstract: 452,568. Scooter driving-mechanism. SABAEFF, C. A. A. G., 1471, McGill College Avenue, Montreal, Canada. March 4, 1936, No. 6550. [Class 136 (ii)] A scooter of the type propelled by the rider's weight applied to two alternatelyacting pedals is driven in the following manner. A transverse shaft 13, Figs. 1 and 5, is mounted on the front part of the scooter frame 1, and is connected, as by a sprocket 12 and chain 11, to a sprocket 10 on the rear wheel 9. The shaft 13 is mounted by ball bearings 14 in a bush 15 secured to the frame 1, and is driven from alternately-acting pedals 29 (pivoted at the rear on shafts 31) by straps or belts 27 engaging pulleys 23, which drive inner members 21 on the shaft 13 through wedging-ball freewheel clutches 22. Spiral springs 32 within the pulleys 23 act thereon to return the pedals to the upper position. The sprocket 12 and chain 11 are enclosed in a cover 17. In a modification, the pedals drive the shaft 13 through rack-and-pinion mechanism.
Patent GB-542958-A (GB)
Title: Improvements in rotatable hose couplings for sucking or blowing devices, for example, vacuum cleaners
IPC: A47L9/24
Filed: 1940-04-11
Abstract: 542,958. Pipe couplings. VAN DER HEEM N.V. April 11, 1940, No. 6551. Convention date, Oct. 26, 1939. [Class 99 (i)] For coupling a hose pipe 2 to the socket 4 of a vacuum cleaner the device comprises two tubular members having concentric parts 1, 3 and eccentric parts la, 3a relative rotation of which causes the engagement of a flange 7 on the inner tube behind the end or in a groove of the socket 4. A locking device comprises a ball 9 engaging recesses in the flange 7 under the action of a spring 10 which also urges a sealing ring 12 against a shoulder 13.
Patent GB-1397371-A (GB)
Title: Data recovery systems
IPC: G11B20/10
Filed: 1973-02-09
Abstract: 1397371 Decoding recorded data HONEYWELL INFORMATION SYSTEMS Inc 9 Feb 1973 [29 Feb 1972] 6588/73 Heading G4C [Also in Division H3] Apparatus for recovering data recorded serially in cells on for example a magnetic disc includes a variable frequency ramp generator the shape of the ramp varying as a function of the frequency at which data is read, sampling of the data occurring between first and second predetermined values of the ramp. As described shaped pulses representing data recorded in double frequency code are fed to a sample and hold circuit (32, Fig. 3, not shown) in the ramp generator, the output of the circuit being connected to a loop filter (36) which controls the magnitude of the current applied to a PNP transistor (50) and variable resistor (52) to charge a ramp generating capacitor (54). A voltage limiting circuit comprising a PNP transistor (56) connected via diodes (58) and resistors (60, 62) to a negative voltage source (64) and an NPN transistor (70) is such that, when the capacitor (54) is charged from a minimum value to a peak value, transistor (56) is non-conductive (owing to the back biasing of its emitter to base junction) so that the ramp output on a lead (72) is increased until it is equal to the fixed base voltage of transistor (56). Transistor (56) then conducts rendering transistor (70) conductive so that the capacitor discharges first to both transistors (56, 70) and then to transistor (56) until at a predetermined minimal voltage determined by the drop across the diode (58) and resistors (60, 62) transistor (56) becomes non-conductive. The ramp voltage is applied to high and low threshold detectors 74, 76 (Fig. 2). The output of AND gate 80 receiving the output and inverted output of the detectors 76, 74 respectively to derive a sampling window at the centre of a cell is nanded with the inverted shaped pulses to derive the recorded data in inverted form. Threshold detector.-When the ramp voltage applied to the base of a transistor (96, Fig. 4 not shown) is below the fixed threshold level established at the base of an NPN transistor (116), a transistor (96) is non-conductive, and a transistor (120) conducting due to the high collector voltage of transistor (96) so that a high voltage is derived at the output junction (122). When the threshold voltage is reached and exceeded transistor (96) conducts and transistor (120) is driven to a lower level of conduction to reduce the voltage at the output junction (122).
Patent GB-854558-A (GB)
Title: Improvements in or relating to electric pulse generators
Inventor: BREWSTER ARTHUR EDWARD
IPC: H03K3/45
Filed: 1959-02-26
Abstract: 854,558. Circuits employing bi-stable magnetic elements. STANDARD TELEPHONES & CABLES Ltd. Feb. 26, 1959, No. 6658/59. Class 40 (9). A sinusoidal triggering wave, curve A, Fig. 3, is applied from a source 10, Fig. 1, to input windings 4, 5 and 6 on magnetic cores 1, 2 and 3 having substantially rectangular hysteresis characteristics, the cores each having a different number of input winding turns or a different flux path length so that they are triggered from one remanent state to the other in turn and induce successive pulses in their respective output windings 7, 8 and 9. A load 13 is common to the output windings, and the successive triggering of the cores by the sinusoidal wave establishes pulse trains of alternate polarity, curve B, Fig. 3, in the load. The core differences are graded so that the pulses in the trains are equally spaced, as shown. The cores 1 and 3 may also be biased in opposite respects by windings 15, 16 and a D.C. source 17, in which case the pulses generated in one half cycle of the alternating wave are brought closer together, curve C, Fig. 3, and the pulses of opposite polarity in the succeeding half wave are spaced further apart. In a modification the core 2 is omitted and the output winding 9 is connected in the opposite sense to winding 7. By suitably adjusting the bias, it can be arranged that the output pulses from the two cores are in coincidence and therefore neutralize each other in one half cycle, curve D, Fig. 3, while two spaced pulses of opposite polarity are generated in the succeeding half cycle. The duration of each output pulse is stated to be determined by the thickness of the core material.
Patent GB-806128-A (GB)
Title: Method and apparatus for making and filling coffee bags also applicable to packing other granular materials
Inventor: WEISMAN MAURICE
IPC: B65B51/30
Filed: 1956-03-03
Abstract: 806,128. Cutting apparatus. MODERN COFFEES Inc. March 3, 1956, No. 6768/56. Class 31 (1). [Also in Groups XVII and XVIII] A machine for making and filling bags (see Group XVII), has means for sealing together webs transversely to close the top and bottom bag ends, the sealing means including knives and grooves which co-operate to sever or partially sever one bag from another. The knives 111 are mounted on opposed sealing surfaces 106, 107 and enter grooves 113 in co-operating surfaces 108, 109. The surfaces are carried on recessed portions of heated rollers 104, 105. The base of each groove has an insert 152, Fig. 14, of stainless steel slightly softer than the knife so that the knives will tend to " lap " the inserts to produce more efficient cutting. Notches 126 may be provided in one of the knives to enable bags to remain joined by narrow webs.
Patent GB-930629-A (GB)
Title: Process for the manufacture of spontaneously crimping composite filaments
IPC: D01F8/12
Filed: 1962-02-21
Abstract: <PICT:0930629/IV(a)/1> Filaments, composed of two different mutually adherent fibre-forming polymers, viz. a polyamide and a different polyamide or a polyester, side-by-side along the length of the filaments, are crimped, e.g. to produce a three-dimensional deformation upon which a double spiral effect may be superimposed, by stretching (up to 550%) at a temperature below, but at most 60 DEG C. below, the melting point of the lower melting constituent, followed by release of tension.  The crimped filaments may be heat-set, as by subjection to (superheated) steam, under minimum tension.  The filaments may be produced by simultaneously melt spinning the two constituents through the same spinning orifices. In the operation of the device shown, molten polymers P1 and P2 are injected by means of one titre pump for each (not shown) into chambers 2 and 3 and, through orifices 4 and 5, enter chambers 6 and 7 and each contacts one side of a partition 8 which tapers to an edge 9 along which the melts meet and flow together, without mixing, through spinneret orifices 10.  The constituents may be modified by addition of lustring, stabilizing and/or plasticizing agents and/or pigments. The line of contact between constituents may be straight or bent, along or spaced from the filament axis. Heating of filaments during stretching may be effected by heated surfaces (as may be provided by rollers) stretching pins or heated tubes.  Specifications 805,033 and 874,808, and U.S.A. Specifications 2,439,814 and 2,439,815 are referred to.
Patent GB-224789-A (GB)
Title: Improvements in or relating to apparatus for bending bars, rods or the like
IPC: B21D11/12
Filed: 1924-03-17
Abstract: 224,789. Indented Bar & Concrete Engineering Co., Ltd., and Sellen, W. J. March 17, 1924. Bars.-In an apparatus for forming a double bend in bars for use in reinforced concrete as described in Specification 221,292, [Class 20 (iv), Floors &c.], of the type consisting of a rotary bending-member pivoted on a stationary member, having bar guiding means, the bar is engaged by the bending-member at two places between the points of the bar engaged by the guiding means and on the stationary member, adjustable means being provided to vary the extents or angularities of the bends. The bar 12 is placed between a pair of studs or removable rollers 3 carried bv studs which may be placed in one of a number of holes 5 on the base plate 1 or plates attached thereto, and passes between a pair of studs 10 or rollers on studs screwed into any of the tapped holes 11 in a member 6, which is pivoted on a counter-sunk screw 7 on the base plate and is rotated by a handle 9 to bend the bar as shown. In a modification, Fig. 5, the member 6 is substantially circular and is provided with a lug 13 engaging a stop 14 placed in one of the holes 15 to limit the rotation of the member. In another form, Fig. 6, the rollers 3 and 10 and the stop 20 are carried by slides 16, 21, adjustable in guides in the parts 1 and 6 and secured in position by nuts. The studs or rollers 10 may be replaced by or used together with slots in the face of the member 6, and the member instead of being pivoted in the manner shown may be provided with projections engaging slots in the base plate. The member 6 may be in the form of a worm wheel driven by a worm rotated by a handle.
Patent GB-673417-A (GB)
Title: Improvements in or relating to inflatable life-saving floats, dinghies and like equipment
IPC: B63C9/02
Filed: 1950-03-20
Abstract: 673,417. Inflatable rafts. R.F.D. CO., Ltd., and BICKNELL, R. Oct. 10, 1950 [March 20, 1950], No. 6870/50. Class 113 (ii). [Also in Group XIII] An inflatable life raft is formed with an inflatable canopy 4 which carries a salt water distillery plant operated by solar heat. A sponge 9, wet by salt water from the bellows 17 is enclosed by a dome 7a which forms a condensing surface but is permeable to the rays of the sun. Condensate is collected by a lower wall 7b coated with wet sponge. Surplus salt water is collected bv a catchment surface 11 and drained off.
Patent GB-1501120-A (GB)
Title: Opto-electronic circuit
IPC: H04B10/43
Filed: 1975-02-18
Abstract: 1501120 Photo-electric circuits BOFORS AB 18 Feb 1975 [18 Feb 1974] 6890/75 Heading G1A A device, for controlling the sensitivity of an optical receiver wherein an amplifier 68, 69 responds to photo-detector 62 signals, comprises means 65a for switching the amplifier sensitivity between a high value when the received radiation is below a predetermined level, and a low value when the received radiation is above the predetermined level. Electrical signals from a photo-conductive detector 62 responsive to modulated light signals are transmitted by a capacitor 64 to an amplifier, e.g. a transistor 68 which provides an output voltage UT across an output load 69, 66a ... 66c. A resistor 67 stabilizes the gain by negative parallel feedback. If the photo-detector 62 receives strong background illumination, e.g. sunlight, a direct component voltage drop across a bias resistor 63 feeding the detector causes a diode 65a to be biased into conduction, so switching in a further parallel-feedback chain 61a, 66a ... ... to reduce the effective gain. Further gain reductions at higher background levels may be provided by diodes 65b, 65c, ..., and resistors 61b ..., connected to respective points of lower potential in the output load chain 66a, 66b, 66c .... In a modification, Fig. 5, (not shown) a photovoltaic cell (52) generates an e.m.f. which is applied to a resistor (53) in series between the cell (52) and the amplifier (58) input, the feedback arrangements being similar to those of the first embodiment.
Patent GB-663813-A (GB)
Title: A new or improved device for use in testing brakes of vehicles
Filed: 1947-03-05
Abstract: 663,813. Dynamometers. SWITH, H. C. March 5, 1947, No. 6911/46. Class 106 (ii). [Also in Group XXXIV] A device for depressing the foot-pedal when testing or adjusting vehicle brakes comprises tubular members 10 and 11 fitted with nuts 12 having threads of opposite hand engaged by corresponding threads of a turn-buckle 13, 14, the member 10 being pivoted to a flanged plate 15 adapted to engage the pedal 16, and the member 11 being fixed to the rod 18 of a piston 19 working in a cylinder 20 which is connected to a pressure gauge 21 and pivoted to a plate 22 adapted to engage the driver's seat 23 or other fixed part of the vehicle. The gauge 21 is graduated to give readings corresponding to the maximum and normal pressures exerted by the average person under normal driving conditions or may indicate the actual pressures applied to the pedal. A return-spring may be provided between the piston 19 and the end of the cylinder 20. Specification 663,812 is referred to.
Patent GB-344657-A (GB)
Title: Improvements in and relating to work holding devices for boring or turning or similar machines
IPC: B23B5/34
Filed: 1930-03-03
Abstract: 344,657. Chucks; lathe drivers. CHIPPERFIELD, W., 16, Ashburnham Gardens, Harrow, Middlesex. March 3, 1930, No. 6915. [Class 83 (iii).] Chucks, particularly for holding railway-wheel tyres in boring, turning, &c. operations, comprise dogs slidable on a base member to centre the work, and clamping devices operated immediately after the centring devices to grip the work, both being fluid-pressure operated. A chuck preferably comprises three pairs of clamping members as in Fig. 5 symmetrically disposed. Members 34 engage at their inner ends inclined dovetail grooves in a fluid-pressure operated piston to draw the dogs 35, through an adjustable screwed member 59, into contact with the work for the centring operation. The source of fluid-pressure is simultaneously connected through a telescoping joint 62 to cylinders 63, the pressure acting slightly later due to the small diameter of the pipe 67, to clamp the work. A piston 49 operates a wedge member 74 to raise a pivoted and longitudinally slidable lever 81 and, through a lever 38, to force a bit 37 on to the work. The final movement of the piston 49 causes a member 87a, which is pivoted at 85a to a link 84a in turn pivoted to the link 38, to be forced upwards to grip the member 34. To release the work, the fluid-pressure is reversed by a two-way cock to return the pistons, first unclamping and then positively withdrawing the dogs against a spring 81<1> by means of a circular recess and projection 75, the spring serving normally to draw the member 81 into the operative position. Specification 343,302 is referred to.
Patent GB-853269-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: BARDEN STANLEY EDGAR
IPC: G21C3/00
Filed: 1957-03-01
Abstract: 853,269. Nuclear reactors. A.E.I.-J. THOMSON NUCLEAR ENERGY CO. Ltd. June 2, 1958 [March 1, 1957], No. 6948/57. Drawings to Specification. Class 39(4). In a nuclear reactor the ratio of fissile atoms to fertile atoms varies periodically from one zone to another. In a heterogeneous reactor fuel channels are grouped in rows, blocks or rings so that fuel elements in adjacent groups are of different degrees of enrichment or of different materials (e.g. uranium or plutonium alternating with thorium). In a homogeneous reactor two fuel mixtures may be used in alternate zones (e.g. thorium in heavy water alternating with U<SP>233</SP> in heavy water) ; one group of zones could be pipes carrying one fuel, the other the spaces between the pipes, or two sets of pipes could be used. Provision could be made for isolating and replacing pipes and for processing and extracting heat from the fuel.
Patent GB-594568-A (GB)
Title: Gear mechanism
IPC: F16H57/037
Filed: 1945-03-20
Abstract: 594,568. Differential cages. TIMKENDETROIT AXLE CO. March 20, 1945, No. 6955. Convention date, Feb. 23, 1944. [Class 80(ii)] A differential cage member has an annular central web with a hollow boss extending from one side, a plurality of apertured bosses extending from the other side and integral gear teeth round its periphery. Two differential cage members 72, 74 recessed at their centres to receive side gears 116, 118 and having integral gear teeth 156, 158, are secured together by bolts 114 passing through mating bosses 94. The spider 104, carrying spherically located bevel gears 128, is located in apertures formed by mating semi-cylindrical recesses 102 in bosses 94. The cage members 72, 74 are journalled in bearings 140, 148 held in the main casing 8 by ring nuts 146, 154. A countershaft 28 journalled in bearings 30, 32 secured to the main casing by coverplates 46, 48, carries gears 40, 42 meshing with the crowned toothed spiral gears 156, 158. A spring detent 71 positions dog clutch 56, operated by servo mechanism 10, which transmits the drive from the shaft to the desired gear. The countershaft also carries hypoid bevel gear 26 meshing with pinion 16 integral with shaft 14. Bearings 23, 24 in the nose casing 10, which is studded to the main casing, carry shaft 14 which is splined to receive a universal joint member 20 on its front end.
Patent GB-764732-A (GB)
Title: Improvements in lubricating arrangements for textile spinning rings
IPC: D01H7/62
Filed: 1955-03-09
Abstract: 764,732. Textile spinning rings, lubricating. MANUFACTURE ALSACIENNE DE BROCHES. March 9, 1955 [March 15, 1954], No. 6970/55. Class 120 (2). A lubricating arrangement for textile spinning rings of the type having holes opening on to the traveller engaging faces and fitted with wicks in lubricant conducting relationship with a lubricant receiving well is characterized in that it comprises a supply wick arranged in an annular groove of the ring and having at least one end thereof dipping into the lubricant well, the holes opening also into said annular groove and containing distributing wicks which extend throughout said holes and have a portion thereof in mutual engagement with the supply wick in said annular groove. In the arrangement shown a spinning ring 1 has an upper bearing face 1a and an inner bearing face 1b against which the traveller bears as it revolves on the ring. The ring 1 is formed with a lubricant receiving well 2 into which a supply wick 3 dips. The wick 3 then encircles the ring 1 in an annular groove 4 and extends to a number of substantially radial holes against the two holes 5 and 6 which open into the bottom of the groove 4 and into the bore of the ring 1. Between each pair of holes 5 and 6 is provided a substantially vertical hole 11 which opens on to the upper bearing face la. Within the holes 11 are arranged distributing wicks 12. In a second embodiment the holes 11 are arranged midway between the consecutive pairs of holes 5 and 6 The supply wick need not directly lubricate the bearing face but may completely surround the ring and contact separate distributing wicks which carry lubricant to the bearing faces. In a third embodiment the invention is applied to a ring having a cylindrical inner bearing face and holes are provided between the groove 4 and the lower portion of the bearing face and also the upper portion of the bearing face. The wicks may have a tubular structure and contain a reinforcing wire.
Patent GB-349648-A (GB)
Title: Improvements in and relating to jambs for doors and exits
IPC: E06B7/28
Filed: 1930-03-04
Abstract: 349,648. Door jambs. WALKER, G., 14, Watford Avenue, Platt Lane, Rusholme, Manchester. March 4, 1930, No. 7044. [Class 20 (iii).] A door jamb is provided with one or more vertical rollers 1 or 6 rotatably carried in upper and lower bearings 2, 3. Reference has been directed by the Comptroller to Specifications 13258/87, 6020/98, and 23438/01, [all in Class 20, Buildings &c.].
Patent GB-451365-A (GB)
Title: Improvements in stands or supports for displaying photographs, pictures, cards and the like
IPC: A47G1/14
Filed: 1935-03-07
Abstract: 451,365. Card stands ; picture frames, &c. EDMONDS, Ltd., G., and COLLINS, W. H., Soho Hill Works, Soho Hill, Hockley Brook, Birmingham. March 7, 1935, No. 7106. [Class 52 (v)] [See also Group XV] A stand or holder for photographs, pictures, cards, or the like comprises an upright U-shaped frame 3, provided with inclined channel members 4 in which the edges of the photograph or of the mount therefor are held, and pivoted at its lower ends at 6 to a forwardly extending substantially U-shaped base frame 5. The front end of the base frame 5 is turned upwards at 5<a> to form a rest for the lower end of the photograph or its mount. The rear ends of the base frame 5 extend behind the upright frame 3 and are bent outwards and upwards at 7 to form stops preventing backward folding of the frame 3.