baber/WOPTO huggingface dataset:
Patent GB-231437-A (GB)
Title: Improvements in loop antennae for radio reception
IPC: H01Q7/00
Filed: 1925-02-13
Abstract: 231,437. British Thomson-Houston Co., Ltd., (Assignees of Langley, R. H.). March 29, 1924, [Convention date]. Aerials.-A receiving loop aerial comprises a plurality of spaced turns of wire of different horizontal dimensions so arranged that the vertical portions of the turns form part of a cylinder. A frame comprising segments 1, 2, cross-bars 3, and rods 4, 5 is supported in bearings 7, and may be rotated by a knob 12 on the panel of the set through gearing 10, 11. The wires are preferably parallel to each other, and the ends secured to the cross-bar 3 and connections taken to slip rings 8 which co-operate with brushes 9. The windings are preferably distributed over from 90‹ to 240‹ of the circumference of the cylinder.
Patent GB-574777-A (GB)
Title: New or improved machines for harvesting root crops
IPC: A01D17/10
Filed: 1944-04-15
Abstract: 574,777. Root crop harvesters. McCAFFREY, H. April 15, 1944, No. 4166/43. [Class 6 (iii)] A machine for harvesting potatoes or other root crops comprises digging means 1, and elevating means 10 adapted to receive the dug crop and to transfer it to a screening or sieving device 20, 21 the machine being jointed or articulated on vertical pivots 9, 14 between the digging and elevating means and between the elevating and screening means. The machine shown comprises a front unit A carrying the spade 1 and fitted with wheels 6 which are adjustable in height. The elevator 10 is mounted on a second unit B and is driven by a bevel wheel 15 mounted on the pivot 14 which connects the unit with the unit C carrying the sieving device 20, 21. The unit C is fitted with two main ground wheels 16 one of which carries an internally toothed ring 17 serving to drive, through shafts and gear wheels, the bevel wheel 15 for the elevator and also two cams 26, 27 adapted to impart motions to the sieving devices. The latter are mounted on the upper ends of flat upstanding springs 22, 23 and are interconnected by link 24. The screens are lifted slowly together and allowed to fall suddenly by the-cams 26 and are vibrated by cam 27. The mesh of the screws is such that the larger potatoes are delivered off the rear end of the upper screen 20, and intermediate potatoes from the lower screen 21, small potatoes, stones and earth falling through the latter on to the ground. The potatoes falling off the rear ends of the screens are delivered to a further elevator 30, also driven by the ring 17, and thence pass through a hopper 35 into sacks on a truck 37. The elevator and truck are in the form of separate units D, E, each connected to the unit in front of it by a vertical pivot. In a modification the unit E is dispensed with and the elevator 30 extends further to the rear so as to overhang the front edge of a wagon or trailer.
Patent GB-893613-A (GB)
Title: Feeding appliance for poultry
Inventor: GREENWOOD RICHARD
IPC: A01K39/014
Filed: 1960-02-05
Abstract: 893,613. Poultry feeding appliances. UTTLEY INGHAM & CO. Ltd. Feb. 1, 1961 [Feb. 5, 1960], No. 4257/60. Class 5(2). A poultry feeding appliance comprises a hopper 8 suspended above a trough which is subdivided by a tubular member 6 into two compartments and comprises a conical portion 2 for insertion into the outlet of the hopper 8, the trough being located below the latter by adjustable, flexible members such as chains 9. Thus the poultry pecking food from the device cause slight relative movement between the hopper and the trough, this movement aiding the flow of food into the trough. Arms 12 mounted at the lower end of the hopper and moved by the feeding poultry serve to agitate the food within the hopper and thus also help to prevent blockages in the supply. The outer compartment of the trough receives the food cast out of the inner compartment by the feeding poultry, and thereby prevents wastage.
Patent GB-438589-A (GB)
Title: Improvements in or relating to the manufacture of crepe threads and crepe fabrics
IPC: D01F2/26
Filed: 1934-02-13
Abstract: 438,589. Yarns &c. BRITISH CELANESE, Ltd., and DREYFUS, H., 22, Hanover Square, London.-(Celanese Corporation of America, (partly) ; 180, Madison Avenue, New York, U.S.A.) Feb. 13, 1934, Nos. 4302/34, 4897/35 (divided out of 438,590), and 16243 /34. [Class 120 (iii)] Highly twisted crepe threads of filaments of organic derivatives of cellulose are twisted and steamed during the insertion of at least the last part of the crepe twist, in the absence of moisture in the case of cellulose ester or ether filaments, or in the presence of moisture in the case of filaments of cellulose ester or ether other than cellulose acetate. The threads may have been prepared by esterification of cellulose filaments without loss of filamentary form ; or they may be cellulose ester filaments which have been saponified superficially or partially throughout, either uniformly along their length or intermittently, or they may have been prepared from filaments of cellulose acetate which have been stretched whilst in a softened state, as described in Specifications 277,089, 323,790, [both in Class 120 (iii)], 370,430, 371,461; 438,584, and 438,585, [both in Group IV]. The threads may comprise filaments of different cellulose esters or ethers and filaments of other materials. The twist may be inserted in one or more stages, and is of the order of at least 70 turns per inch for a thread of 165 denier, and at least 85 turns per inch for thread of 115 denier, which gives a smooth cylindrical thread whose apparent sp. gr. is more than 75 per cent of the actual sp. gr. of the filaments. The threads may consist of continuous filaments or staple fibres, e.g. as prepared according to Specifications 424,683, 424,752, 424,830, and 424,879. Twisting may be effected by drawing off over the end of a rotating package, e.g. by means of the device described in Specification 304,806, [Class 120 (iii)], and passing the thread into a steaming chamber, which may consist of a steam pipe of the requisite diameter with inlet and outlet eyes arranged diametrically, of porcelain, stainless steel or the like. The threads may be moistened before steaming. A suitable steaming is obtained by passing the threads at 2-10 metres per minute through 3in. of steam. The threads may be stretched by 10-20 per cent during the twisting. Fabrics containing the crÛpe threads are subjected to a hot aqueous treatment to develop the crÛpe effect. Specifications 348,589 ; 437,019, [Group IV], and 438,590 also are referred to.
Patent GB-704827-A (GB)
Title: A new or improved chain drive control system between detachable parts
IPC: F16H7/06
Filed: 1952-02-19
Abstract: 704,827. Controlling aircraft. SAUNDERS-ROE, Ltd., and PEARSE, P. L. July 31, 1952 [Feb. 19, 1952], No. 4376/52. Class 4 [Also in Group XXIV] A drive connection between the separable fuselage and wings of an aircraft, which components each have a chain and sprocket circuit is provided so that when the two components are assembled the drive is engaged and when the components are separated the drive is disengaged. As shown the fuselage 11 of an aircraft has a control chain 20 passing over spaced sprockets 21, 22. The wing 10 has a chain 24 for operating the aileron or flap which passes over a sprocket 25. Secured to the sprocket 25 is another sprocket 27 which when the wing is assembled on to the fuselage engages and establishes a driving connection with the run 23 of the chain 20 between the sprockets 21, 22. The chain 20 may be slack when the parts are separated but tensioned by the sprocket 27 when the parts are assembled. The sprockets 25, 27 may be of different sizes so as to provide a change in the drive ratio. The invention may also be applied to an aircraft having folding wings. The Provisional Specification states that toothed gearing may be used instead of, or combined with, the chain gearing.
Patent GB-384481-A (GB)
Title: Improvements in or relating to windows
IPC: E06B3/50
Filed: 1932-02-15
Abstract: 384,481. Fanlight and sliding window regulators. MUNKERT, E., 1, Landolinstrasse, Esslingen, Wurtemberg, Germany. Feb. 15, 1932, No. 4473. Convention date, Feb. 14, 1931. [Class 20 (iii).] A fanlight and sliding sash are operatively connected to the same balance weights o by the cable n and levers e, h, so that they may be opened or closed by the actuating cord r. The fanlight is carried by levers c, l, of which the levers c are keyed to a shaft d rotatable by arms e to which the cords r, n are connected. The lever e is also connected by toothed gearing f, g to a lever h carrying a pulley k over which the cable n is passed. The cable n passes over the pulley p to the bottom rail of the sliding sash.
Patent GB-1522903-A (GB)
Title: Optically coupled apparatus
IPC: H04B10/00
Filed: 1976-02-04
Abstract: 1522903 Transistor amplifiers WESTERN ELECTRIC CO Inc 4 Feb 1976 [10 Feb 1975] 04475/76 Heading H3T Two optically coupled circuits, e.g. for a bilateral communication system, each comprises an amplifier, e.g. 62, having a light-emissive device 78 coupled to its output, and light detectors 64, 80 disposed to receive said light, one 80 being coupled in an output circuit and the other 64 providing negative feedback to the amplifier 62, whereby non-linearity between an input signal to the amplifier and the corresponding signal from the output circuit is reduced, the apparatus further including an input/output terminal 56 coupled to an input of amplifier 62 via summing impedance R50, the output 66 of the other circuit being coupled to an input of 62 via a cancelling impedance Z2', for cancelling signals from 66 at amplifier 62. The output amplifiers are 84, 68, the input amplifier corresponding to 62 for the opposite direction being 92. An input signal from a first telephone set (not illustrated) connected at T, R is fed via input terminal 56 to the output of 68 and to an input 60 of 62, in parallel, the impedance Z1<SP>1</SP> being a terminating impedance for the input line. The output terminal 66 of amplifier 68 is a virtual earth, and hence the input signal cannot reach the other input 70 of amplifier 62. After passing through the optical coupling 78, 80 and amplifier 84 the signal emerges at a second telephone set connected to Tl, Rl. An impedance Z3' (corresponding to Z2<SP>1</SP>) acts as a hybrid cancellation impedance to ensure that the signal components reaching the differential inputs of amplifier 92 are equal, so that no reflected signal is produced. Networks Zol', Zo2' are gain control feedback impedances switchable by S1, S2 respectively to provide alternative values of gain in amplifiers 68, 84. R64, C16 and R65, C17 serve for determining the gain and shaping the frequency response of amplifiers 62, 92. Capacitors C28 and C29 compensate for the stray capacitances CS1, CS2 in parallel with the optical couplings, so as to prevent common mode signals from propagating through the system. Resistors R53, R79 in Zol', Zo2' respectively may be varied in value to compensate for mispositioning of the light sources with respect to the light detectors. The light sources may be gallium phosphide LED's and the detectors silicon diodes operating in the reverse biased mode. The system may be used as an optical transmission system by optical fibre couplings. The input and power circuitry 57 comprises a polarity guard (102), Fig. 5 (not shown), consisting of a diode bridge, and a high impedance constant current sink which provides the supply voltages � Vx and Vx ref. A Zener diode (Dzl) protects two transistors (Q3, Q4) against excessive supply voltage. The input and power circuitry 59 comprises a chopper (S3) driven by an oscillator to produce A.C. from a D.C. supply, Fig. 6 (not shown), to provide the supply voltages �Vy and Vy ref, the circuit including three thermistors (Th1-3).
Patent GB-273358-A (GB)
Title: Improvements relating to the manufacture of goods from indiarubber and the like
IPC: H01M50/112
Filed: 1926-02-17
Abstract: 273,358. Fraser, A. Feb. 17, 1926. Cells.-A battery box having integral outer and partition walls b, d moulded of ebonite &c. under the influence of pressure and heat is provided with integral alternative series of recesses f and projections g on its oppositely disposed inner faces adjacent the sides of the plates, the recesses f in one series being disposed opposite to the projections g on the opposite series. The projections g do not extend to the full height of the box so as to form supports for the coverplates h provided with handles h<1> and terminal holes h<2>. Ribs i, preferably of soft rubber, are formed on the bottom of the compartments to support the plates which are held in position by series of projections and recesses i formed on the side walls. The ribs i are arranged adjacent to recesses f so as to allow circulation of the electrolyte. The box is moulded in a " knockdown " mould, Fig. 4, as described in Specification 274,792, [Class 87 (ii), Moulding plastic &c. substances], comprising top and bottom plates c, c<1> through which pressure is applied and side plates a, a<1> having bevelled edges fitting into corresponding recesses in the plates c, c<1> so that the pressure applied to the plates c, c<1> causes the plates a, a<1> to move inwardly.
Patent GB-1358698-A (GB)
Title: Game
IPC: A63F9/20
Filed: 1971-02-12
Abstract: 1358698 Dominoes SEVEN TOWNS Ltd 9 Feb 1972 [12 Feb 1971] 4608/71 Heading A6H Dominoes 11a-11f are provided with male 15a-15f and female 14a-14f mating members. Each domino is divided into two parts, one part e.g. 13a having a first set of representations thereon (e.g. animals and the other part e.g. 12a having a second set of representations thereon e.g. pips). Some of the representations of one set are associated with some of those of the other set by number and the male and female mating members are arranged so that two dominoes will only mate together when two numerically associated representations of each set are correctly matched. The mating members preferably interlock.
Patent GB-395980-A (GB)
Title: Improvements in high-tension dynamo-electric machines
IPC: H02K3/28
Filed: 1933-02-15
Abstract: 395,980. Windings for dynamo-electric machines. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and YOUNGMARK, F. A., Siemens Works, Stafford. Feb. 15, 1933, No. 4635. [Class 35.] Coils.-In a machine having a high and a low potential winding, each having coils of the type in which one side occupies a lower position in its slot than the other, one winding occupies in this manner the top and bottom parts of the slots and the other the parts of the slots between the first mentioned winding. In the form shown, single-turn coils are used of which a4, a<6> are coil sides of the high potential winding, a<28>, a<30> are coil sides of the low potential winding, whilst a<12> and a14, also a<20> and a<22> are coil sides of two other windings at intermediate potentials. The free ends of conductors a4, a<6>, a<12> and a<14> are preferably brought out at the end of the core opposite to those of the other conductors. In a modified form, there are two windings which are series-connected and winding diagrams are given, in one of which the high and low potential windings have the same slot pitch. In a second diagram, one has a slot pitch of six and the other, the lower potential winding, five. In this form the coils of both windings are shown with three turns but this number may be varied.
Patent GB-176628-A (GB)
Title: Improvements relating to hopper dredgers and barges
IPC: B63B35/30
Filed: 1921-02-10
Abstract: 176,628. Lobnitz & Co., Ltd., (Pincione, T.). Feb. 10, 1921. Barges; dredgers; keels and keelsons.- In a hopper dredger or barge in which the hopper B has a discharge door D on each side of the keelson F, the sides of the hopper converge towards the top for the purpose of facilitating precipitation and settlement of the solid matter in the spoil. The keelson F is hollow and triangular in section, and the sides b<1> of the hopper B first diverge upwardly from the bottom and then converge towards the top. If desired, the hopper walls may be curved instead of straight.
Patent GB-645077-A (GB)
Title: Television apparatus for transmitting motion picture film
IPC: H04N3/38
Filed: 1948-02-18
Abstract: 645,077. Television. FARNSWORTH RESEARCH CORPORATION. Feb. 18, 1948, No. 4715. Convention date, April 15, 1946. [Class 40 (iii)] [Also in Group XX] Undesired motions of images of a continuously moving kinema film which are maintained substantially stationary for pre-determined intervals of time on the photosensitive member of a picture signal generating tube are compensated by suitably controlling the deflection of the tube scanning beam. In the arrangement shown in Fig. 1, images of successive picture frames of a (24 frame-sec.) continuously moving film 13 which are projected on to the photosensitive member 11 of a picture signal generating tube 10 are maintained substantially stationary thereon by means comprising a selector shutter 18, Fig. 2, provided with two spiral apertures 45, 46 and rotated at 720 rev. per minute, and two discs 16, 17 each carrying 24 lens elements 43, 44 respectively which, when superimposed, form compound lenses, the discs being rotated in opposite directions, synchronously with shutter 18 and film-driving means 22 under the control of signals from the synchronizing signal generator 35 at 60 revs. per minute so that each compound lens is exposed for 1/24 sec. during which time the motion of a picture frame across the member 11 is substantially but not completely neutralized. Compensation for this lack of complete neutralization, which is due to the.fact that, for a finite (2A, Fig. 3) angular movement of discs 16, 17, whilst the horizontal components of motion of the image formed bv each lens cancel each other the vertical components are additive, is effected by modifying the deflecting waveform applied to the vertical deflecting coils 40 of the tube 10 by the addition of a correcting waveform of suitable shape. The exact shape of this waveform is determined experimentally by observing the actual image displacement on the member 11 as the film drive mechanism and the shutter and lens discs are slowly operated and the required waveform is produced by adding together, with suitable amplitudes and phases, a sine wave, a saw-tooth wave and a parabolic wave generated respectively in units 50, 51 and 60. Details of these waveforms and their combination to produce a desired resultant waveform are described with reference to Figs. 4 and 5 (not shown).
Patent GB-452119-A (GB)
Title: Improvements in cushion spring assemblies
IPC: A47C27/07
Filed: 1935-02-15
Abstract: 452,119. Spring upholstery. BURGESS, A. F., 10, New Court, Lincoln's Inn, London.- (Burton-Dixie Corporation ; 2024, South Racine Avenue, Chicago, U.S.A.) Feb. 15, 1935, No. 4930. [Class 52 (iv)] A spring assembly has a stiff helical border wire 13, the effective length of which can be altered after attachment, for the purpose of shaping the cushion, by squeezing together certain of the adjacent convolutions 16.
Patent GB-161042-A (GB)
Title: Improvements in game apparatus
IPC: A63F9/14
Filed: 1920-02-18
Abstract: 161,042. Dunhill, A. Feb. 18, 1920. Race games, mechanical.-Relates to racegame apparatus of the type in which model horses &c. are drawn forward by means of cords attached to a rotating spindle and consists in providing each of the players with a device for controlling the winding of the cord upon the spindle. As shown, the winding-spindle d, Fig. 1, is contained within a casing having a hinged front c and a hinged top b the latter being capable of folding back so as to project beyond the bottom of the casing and rest against the edge of the table. The players are provided with guide-rods m, Fig. 2, which are pivotally mounted within recesses formed in the back a<1> of the casing, each of the rods carrying a loop for guiding the cord. In a modification, each of the players may be provided with a separate casing containing a spindle and rod &c.
Patent GB-124278-A (GB)
Title: Improvements in or relating to Doors, and Dampers in connection with Furnaces.
Inventor: LISTER GEORGE
IPC: F23M7/00
Filed: 1918-03-20
Abstract: 124,278. Lister, G. March 20, 1918. Doors.-Vacuum-chambered furnace doors are constructed with strengthening flanges, ribs or corrugations. Figs. 1 and 2 shows a. construction suitable for a coke-oven door consisting of a vacuum chamber 4 flanged to enclose protecting fire-bricks 26 and partitioned internally by vertical webs 6 with openings 10. A vacuum-retaining valve and a spring relief-valve are provided in connexion with the union 11 for attachment to the exhausting-apparatus, and a pressure gauge 15 is also fitted. Fig. 8 shows in section a door with a corrugated outer wall to the vacuum chamber and internal strengthening-webs on the inner wall, which is protected by fire-bricks. A hand hole may be formed through the whole structure and fitted with a small cover.
Patent GB-130286-A (GB)
Title: Improvements in Fire-lighting Devices.
Inventor: KNIGHT JOSEPH
IPC: F24B15/00
Filed: 1919-02-28
Abstract: 130,286. Knight, J. Feb. 28, 1919. Lighting fires; supports for articles to be heated; fuel-economizers.-A fire-lighter consists of a hollow body 1, of metal or firebrick, with a base plate 3, which is prefera'bly slotted to form bars, and rests on the grate bottom. The flames from a Bunsen gas burner 12 pass through slots or perforations 2 in the walls. An integral or detachable ring 15 may be provided for supporting a kettle or other utensil, having perforations 19 for the passage of the flame. When detachable, it may be provided with a handle. After the fire is lit, the device forms a duct for the entry of air. In another form, the body is made open at the rear side, which then lies against the back of the fire-grate.
Patent GB-581130-A (GB)
Title: Improvements in crystal contacts of which one element is silicon
IPC: H01L21/00
Filed: 1942-04-15
Abstract: The crystal contact of a crystal detector is formed of substantially pure silicon to which is added about one atomic per cent. of chromium.  Traces of aluminium and beryllium may also be added.  The mixture of powdered elements is heated in a crucible of pure beryllia in an atmosphere of air at a pressure of not more than .001 mm. of mercury.  Pieces of the fused mixture are then made into crystal detector elements in the manner described in Specification 577,181.
Patent GB-256872-A (GB)
Title: Improvements in ophthalmic mountings
IPC: G02C1/08
Filed: 1926-02-22
Abstract: 256,872. Stanley, A. H., (Bausch & Lomb Optical Co.). Feb. 22, 1926. Spectacles, of the kind in which the rims are provided with end pieces secured by screws and in which the temple pieces are hinged, have one of the end pieces 6 provided with a recess 4 extending part way into the end piece 6 and adapted to receive the other end piece, which is secured in place by a screw 20. The wall of the recess 35 and the end portion 71 is shaped to interlock with the correspondingly shaped end piece to prevent relative twisting. The construction is particularly applicable to temple pieces having double ears 11, and may be used with temples having single ears.