baber/WOPTO huggingface dataset:
Patent GB-235443-A (GB)
Title: Improvements in apparatus for breaking up concrete road foundations and like structures
IPC: B25D3/00
Filed: 1924-10-10
Abstract: 235,443. Bond, E., and Cover, H. T. Oct. 10, 1924. Vertically driven rock-breakers.-Apparatus for attaching a steel wedge or other tool to a piledriving hammer for breaking up road or other foundations, excavating rock and similar purposes comprises supports D secured to the steam, pneumatic or other hammer A. Secured to the supports D are transverse plates E which serve to guide the hammer on the guides C. A U- shaped plate F attached to the plates E supports a block H. having a bushed vertical hole to guide and support the wedge or tool G. A pin L passes through the tool and through slots in the plates E and F above the block H. Plates M, of inverted T-shape, detachably secured to the plate F and covering the slots therein, prevent the pin from falling out. In use. the hammer is lowered till the point of the tool G rests on the object to be, broken up and its upper end is pressed against the anvil block B of the hammer. The lowering rope N is then released and the hammer started, driving the tool into the object.
Patent GB-1499867-A (GB)
Title: Piano
IPC: G10H3/08
Filed: 1975-06-04
Abstract: 1499867 Electrophonic musical instruments C E MUSSULMAN 4 June 1975 [7 June 1974] 24037/75 Heading G5J An electric piano comprises a set 38, 42 of single strings and means (not shown) for striking the strings ; a floating bridge 40 which mechanically engages all the strings and is supported by them; a plurality of pick-ups 14 sensing the strings and circuitry coupled to the pickups and arranged to provide an audible output characteristic of piano tones. The strings are mounted on a relatively light metal frame 46 and are anchored to the upper part of the frame 48 by tension adjusters (Figs. 8, 9, not shown); the other ends of the bass strings are anchored to cross-strut 52 and the treble strings to strut 50. The floating bridge which is of laminated wood and particle board construction has a pair of obliquely set pins 62 for each string; the bridge is supported solely by the strings being trapped between the respective pairs of pins 62. The effective length of the strings is between the bridge and the upper frame and the pickups are placed one sixth of the length up from the bridge for the lowest bass string varying steadily up to one half way up the highest treble string. The pick-up coils are all connected in series between the amplifier input (Fig. 13, not shown) and ground with a capacitor (À01ÁF for 100 # coils) between each junction point and ground to suppress harmonics. The coils are wound and aligned for hum cancelling. The pick-ups are mounted on brackets 92, 100, 102, which can be bodily moved by screws relative to the strings and have permanent magnet cores independently movable within the coil towards or away from the respective string.
Patent GB-702745-A (GB)
Title: Improvements relating to universal joints
IPC: F16D3/38
Filed: 1950-10-03
Abstract: 702,745. Universal joints. EDWARDS, E. J. A. Aug. 30, 1951 [Oct. 3, 1950], No. 24093/50. Class 80 (2) Perpendiculars 9 to the normals N or resultant R of the normals N<SP>1</SP>, N<SP>14</SP>, of ball-bearings, or equivalent conical roller or coned plain bearings of a Hooke's joint all intersect at the point of intersection O of the rotational and pivotal axes of the joint. The inner bearing members 8 are screw-adjustable in shaft forks 4, 6, the outer being carried in an intermediate block 7 or sphere enclosed therebetween.
Patent GB-1372805-A (GB)
Title: Method for forming a cathode-ray tube screen
IPC: H01J9/227
Filed: 1972-05-23
Abstract: 1372805 Luminescent screens RCA CORPORATION 23 May 1972 [14 Jan 1972] 24106/72 Heading H1D In the manufacture of a colour television screen by exposure of a photo-resist through a shadow mask provided with elongate apertures aligned along their lengths, light passes from the source along at least two separated paths so that the exposed areas merge to form a multi-line screen. Fig. 3, illustrates the use of a line source 50 to expose the screen 22 through the slits 38 in the mask (of which only two are shown) to produce areas 68, 70 and 76 of maximum exposure, and areas 72 and 74 of minimum exposure. If a shorter light source is used, the area exposed through the lower slit by the lower end of the source may adjoin the area exposed through the upper slit by the upper end of the source (Fig. 4, not shown).
Patent GB-1455011-A (GB)
Title: Electrostatic imaging device and process using same
IPC: H04N1/29
Filed: 1973-05-21
Abstract: 1455011 Image converter tubes AGFAGEVAERT 8 May 1974 [21 May 1973] 24169/73 Heading H1D A device in which a charged particle emission pattern is produced in an envelope containing ionizable gas-by, for example, the incidence of an X-ray, gamma ray, fast electron, neutron, ultra-violet, visible, or infra-red image on a photocathode 1-and is recorded as an electrostatic charge pattern on a conductivelybacked insulating target 3 which is removable from the envelope, includes a structure 2 formed of a plurality of microchannels directed normal to the photocathode surface, having one face adjacent or contacting that surface, and of substantially non-secondary-electron emissive material to prevent the occurrence of self-sustaining discharge, whereby image resolution is improved by the reduction, by the structure 2, of the sideways spread of electrons. The microchannel plate 2 may be formed of corrugated sheets of glass or resin the interior of the channels of which may, except at a photocathode-contacting end, be coated with conductive material, or of metal, in which case photocathode contacting ends may be coated with insulator, or oxidized. The channels are of diameter 10-200 microns, and if the plate is separated from the photocathode the spacing is not more than 1À5 mm. In a modified arrangement (Fig. 4, not shown) the channel plate itself constitutes the photocathode, being formed of lamella or films the wall material of which is photoemissive, e.g. containing lead, uranium, or bismuth in the case of an X-ray sensitive device. The gas filling may be at a pressure above or below atmospheric, and may be a mixture of argon with monobromotrifluoromethane. The envelope is sealed by compressible strips 11 of PTFE.
Patent GB-647035-A (GB)
Title: Improvements in or connected with braking mechanism for perambulators or baby carriages
IPC: B62B9/08
Filed: 1948-09-15
Abstract: 647,035. Perambulator brakes. TAN SAD, Ltd., and SHOTT, P. Sept. 15, 1948, No. 24175. [Class 103 (i)] [Also in Group XXXII] A perambulator brake of the type wherein a pair of wheels are operatively displaced against fixed brake stops 13 not only to apply the brake but also to give stability, is characterized in that a manually-operable lever 7 is pivotally connected by linkage 9, 10 to a rigid part of the framework, such as the fixed axle 6, and the forward end of the lever 7 is pivotally connected to the wheel axle 5, which is in turn connected to the chassis by means of cranks 12 so that by operation of the lever 7 the axle 5 may be arcuately traversed so as to bring the wheels into contact with the stops 13, as indicated with chain-dotted outline.
Patent GB-704034-A (GB)
Title: Improvements in forced recirculation furnaces
Inventor: RUSHTON FRANK
IPC: C21D1/767
Filed: 1951-10-17
Abstract: 704,034. Heat-treatment furnaces. BRAYSHAW FURNACES & TOOLS, Ltd. Oct. 15, 1952 [Oct. 17, 1951], No. 24178/51. Class 51 (2) A forced recirculation furnace has deflecting blades 5 mounted in the delivery passage 2 from a circulating fan to vary the volume of gases passing to each part of the work chamber without affecting the total volume circulated, the deflector blades being pivotally mounted at 10 with their free edges facing the stream of gases so as to split up the said stream. The gases enter the work chamber through ports 4. The positions of the deflector blades are adjustable from outside the furnace.
Patent GB-1107606-A (GB)
Title: Improvements in or relating to methods of and apparatus for bending a sheet of material
IPC: B27G5/00
Filed: 1965-06-08
Abstract: 1,107,606. Bending wood. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 8 June, 1965 [11 June, 1964], No. 24198/65. Heading B5L. A method of manufacturing an article, such as part of a cabinet for radio or television apparatus, comprises providing a sheet of, for example, wood with at least one groove, the side faces 3 of which initially form a V-shape and then preferably extend parallel 4 with each other, clamping the sheet immovably to a first support on one side of the groove and to a second support on the other side of the groove, and pivoting the supports about a pivot line 9 located outside the sheet on the ungrooved side thereof. When the wood sheet is bent so that the surfaces 3 abut, the portion 7 forms a small radius on the outer surface of the plate. The position of the pivot line 9 below the surface 8 of the support causes compressive streams only in the sheet particularly in the part 2. In apparatus for carrying out the method, a base support 11, Fig. 2, is connected by vertically adjustable pivots 14 to a pair of support plates 13. The base support and each support plate has a pressure plate 17 movable by a pneumatic cylinder 16 to clamp a workpiece to the support and plates, the workpiece being formed with two grooves as referred to above, each groove being located above a pivot 14. The support plates 13 may be connected by cables 18 to a winch which, when operated, causes the plates to move about the pivots 14 to bend the workpiece into a U-shape. The workpiece; such as short-fibred timber, e.g. teak or makore, may be rendered more flexible by wetting or heating. A layer of nylon may be disposed between the workpiece and supports 11, 13 to prevent penetration of the wood between the plates. The surface of the workpiece may be lacquered before bending.
Patent GB-766189-A (GB)
Title: Magnetic element memory matrix
IPC: G11C11/06
Filed: 1954-08-20
Abstract: 766,189. Electric digital-data-storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 20, 1954 [Aug. 25, 1953], No. 24275/54. Class 106 (1). [Also in Group XXXIX] In a storage matrix of magnetic elements, each of which reverses its state on application of an energization of between 1 and 2 units, 2 units of energization are applied to all the elements of a selected word line and 1 unit of energization is applied additively or subtractively to all of the elements corresponding to a given word bit so as to switch or not the corresponding word-bit element of the selected word line as desired. Thus, a 3: 1 ratio of energization and a high speed of operation are obtained. In a threedimensional matrix, a word line, e.g. 20, 24, is selected for writing by passing current through an appropriate X tube 34 and an appropriate Y writing tube 35 sufficient to apply 2 units of energization to the cores by means of coils 30, 36. Further coils 32, 38 are connected in respective Z plane word-bit circuits, each of which is energized to produce either an additive or subtractive unit of energization in the elements, the word-bit elements in the selected word line being switched or not accordingly. For reading purposes, at least 2 units of energization are applied negatively to all of the cores 20, 24 of a selected word line by means of coils .31, 42, the circuit being completed through a X tube 34 and a Y reading tube 41. During this operation, output pulses are produced in further coils 43 in cases where the elements had been switched from their initial states. Diodes 37 prevent sneak paths. In order further to increase the speed of operation, a transistor 56, Fig. 4, may be associated with each element, an additional coil 52 being connected to the base of the transistor and the word-bit coil 53 being connected to the collector 55. On receipt of negative pulses on coils 51 and 53, the potential of the base is lowered and the collector passes more current, still further lowering the potential of the base through the coils 53, 52, and so producing a re-generative action.
Patent GB-1133005-A (GB)
Title: Improvements in exterior driving mirrors for vehicles
IPC: B60R1/08
Filed: 1966-08-01
Abstract: 1,133,005. Vehicle exterior driving mirrors. J. B. DAVEY. 27 Oct., 1967 [1 Aug., 1966], No. 24325/66. Heading B7J. [Also in Division A4] A vehicle exterior driving mirror comprises a plane reflecting surface 3 and a convex reflecting surface 4, such that the tangent plane to the convex surface 4 which is parallel to the plane surface 3 touches the convex surface 4 at a point 5 laterally offset from the centre lines 6, 7. The mirror may comprise a frame 1 retaining the plane and convex mirrors or may comprise a convex mirror with a flat backing which may be glued to any plane mirror.
Patent GB-788660-A (GB)
Title: Improvements in or relating to flowmeters
Inventor: GOODY ERNEST HENRY
IPC: G01F15/06
Filed: 1954-08-20
Abstract: 788,660. Measuring fluid flow electrically. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 22, 1955 [Aug. 20, 1954], No. 24358/54. Class 40 (1). A fluid flow meter comprises an element which moves under the influence of the flow so as to generate electrical pulses at a rate dependent on the rate of flow, which are transmitted to an indicator. Means is provided between the pulse generator and indicator to vary the proportion of the pulses reacting the indicator either automatically in accordance with the density of the fluid or via a manual control set in accordance with the fluid density. In the embodiment a rotary member, e.g. a helical vane, is placed in the flow and generates pulses which are fed via a means for cutting out a proportion of the pulses and an amplifier 8 to an indicator 9, which summates the pulses. The amplifier may also feed a flow rate meter responding to pulse frequency. The means for cutting out a proportion of the pulses comprises a conducting cylinder 6, the surface of which is partly covered by an insulating layer 5a, the breadth of which varies continuously along the length of the cylinder. The cylinder is continuously rotated by motor 7, and its continuous conductive surface is constantly engaged by contact 10, whilst contact 11 engages this surface for a fraction of each rotation determined by its position relative to the cylinder, which is varied either manually, as shown, or by means, e.g. a float or a thermometer responsive either to transient density changes or to different densities of different fluids. The meter 9 thus gives a reading of the, mass flow. The cylinder may be replaced by a disc with an insulating coating over part of its area, the contacts then being made to the axis and to a point variably spaced therefrom. In either case the fraction of pulses passing to the indicator depends on the position of the second contact. Alternatively, a relay means the break period of which is variable, may be used instead of the cylinder or disc.
Patent GB-1506275-A (GB)
Title: Control system for variable pitch fan propulsor
IPC: F02C9/58
Filed: 1975-06-06
Abstract: 1506275 Controlling gas turbine ducted fan engines UNITED TECHNOLOGIES CORP 6 June 1975 [7 June 1974] 24382/75 Headings F1C, F1G and F1J [Also in Division G3] A gas turbine ducted fan aircraft engine includes means 10 for controlling engine fuel flow in response to the error between actual rotational speed NF and a desired value derived from at least the power lever position and the flight Mach No. MN and for automatically co-ordinating the fan blade angle # to the fuel flow. The control means 10 is also responsive to compressor inlet temperature T2 and transmits signals via lines 12, 14, 16 respectively to the fan exhaust nozzle actuator 18, fan pitch change mechanism 34 and fuel metering device 26. The latter prevents excess gas generator temperature, torque, speed or pressure. Means 10 is of digital electronic type including circuitry Figs. 2, 3 (not shown) having a proportional plus integral fan speed governor (54) and an anticipatory circuit (58) operable within predetermined limits of power lever 42 and Mach No. to enable rapid changes of fuel flow during transient conditions. The anticipatory circuit (Fig. 3) effects time integration of a derivative and proportional speed error signal and of a derivative power lever signal. To avoid loss of large magnitude short duration derivative signals, the latter are converted into smaller amplitude longer duration signals by providing a rate limited first order lag and then computing the derivative thereof. A function generator (74) Fig. 2 (not shown) and a selector switch (76), which passes only the higher of two values, ensure that nozzle 20 is controlled without bringing fan 24 into the surge range. Interlocks (44, 46, 48) are included in the speed, blade angle and nozzle area circuitry to ensure smooth and rapid transition of the fan blades 36 from a forward thrust angle, through the feathered position and into reverse thrust without overloading the fan shaft or increasing forward thrust.
Patent GB-263913-A (GB)
Title: A new or improved stop motion for winding and analogous machines
IPC: B65H54/02
Filed: 1925-10-01
Abstract: 263,913. Stubbs, Ltd., J., and Stubbs, J. H. Oct. 1, 1925. Stop-motions. - In a machine for winding artificial silk the stop-motion comprises a drop wire 7, Fig. 1, provided with a counterweight 9 pivoted at 13 in a frame 10, the yarn x passing over a roller 8 at the lower end of the wire 7. On breakage of the yarn, the wire 7 overbalances under gravity and the member 9 falls into the path of a wiper 15 on the stopmotion shaft 14. On stoppage of the shaft 14 the clutch member 21, Fig. 2, is forced to the left against the spring 24 thereby turning a lever 26 about its pivot 27 and moving a detent 32 from beneath the support 33 of the spur wheel 34. The wheel 34 thereupon rolls on the wheel 35 out of mesh with its driving wheel, the swift 6 and the counting medhanism being thus stopped simultaneously.
Patent GB-689925-A (GB)
Title: Improvements in variable speed gears
IPC: F16H3/72
Filed: 1950-10-06
Abstract: 689,925. Hydromechanical variable speed gears. PILKINGTON, H. F. Oct. 4, 1951 [Oct. 6, 1950], No. 24433/50. Class 80 (ii). [Also in Group XXIX] The annulus 5 of an epicyclic gear is secured to the input shaft 1 and to the driving member 4.of a fluid coupling, the driven member 6 of which is connected to the carrier 9 of planet wheels 10, the sun wheel 11 being connected to the output shaft 2. The driven member 6, is slidable on, but is keyed to, a sleeve 7 surrounding the shaft 2 whereby the torque transmitted may be adjusted (see Group XXIX).
Patent GB-686864-A (GB)
Title: Improvements in or relating to rotary multi-colour offset printing machines
IPC: B41F31/00
Filed: 1950-10-06
Abstract: 686,864. Printing-machines. RAS, M. Oct. 6, 1950 [Oct. 10, 1949], No. 24454/50. Class 100(ii). Rotary machines; inking apparatus.-In a rotary multi-colour offset printing machine comprising a number of printing units arranged side by side in the direction of the run of the paper web and at substantially the same level, each of the units comprising an impression cylinder and, in co-operation therewith, two plate cylinders in association with their respective transfer cylinders, inkers and dampers, the inkers and dampers are arranged below the level of the plate cylinder axes. The web 2, Fig. 1, passes from a roll 1 through units 3, 4, 5 to a folder 6. Each unit comprises an impression cylinder 9, Figs. 1 and 2, plate cylinders 7, transfer cylinders 8, inkers 10 and dampers 11, the latter taking the form of nozzles spraying water on to cylinders 11'. The cylinders and inkers are driven from an input gear box disposed centrally of the unit, the inkers being driven through gear trains accommodated in oil bath recesses in the wall of the unit.
Patent GB-297082-A (GB)
Title: Improvements in or relating to lubricating mechanism for internal combustion engines
IPC: F01M9/12
Filed: 1928-08-25
Abstract: 297,082. Clark, J. B. Sept. 14, 1927, [Convention date]. Lubricant conveyed by fluid.-A lubricating device for an internalcombustion engine comprises a pipe 10 connected to the intake manifold B and, through a control valve 15, to a tube 24 depending into a lubricant receptacle D which may be the can in which lubricant is ordinarily sold, a wick 32 being arranged in the tube to extend below the lower end thereof and the tube being formed with an aperture 34 located below the upper end of the wick and slightly below the top of the receptacle. When the receptacle is full, a relatively large quantity of lubricant is drawn from the receptacle through the hole 34 and the wick into the manifold B, but, when the level of lubricant falls below the hole, air is drawn therethrough and carries with it a small quantity of lubricant from the wick. The tube 24 is secured to a cap 25 adapted to be screwed on to the neck d of the receptacle D. the comparatively loose connection between the cap and neck permitting the entry of air into the receptacle. A projection on the cap 25 screws into an enlargement 22 at the lower end oi the casing 12 of the valve 15. The receptacle is held in position by a bracket 28 secured to the dashboard 27 and having an arm 29 held between the members 22, 25 and a toe 30 adapted to engage the bottom seam of the receptacle. The operating arm 20 of the valve 15 is connected by a wire 36 passing through a guide tube 38 to the rod c' operating the thrcttle valve c, the connection being such that the valve 15 is closed when the throttle is nearly closed, reaches its maximum opening when the throttle is partly open, and is again closed when the throttle is wide open.
Patent GB-187424-A (GB)
Title: Improvements in and relating to rat and other vermin poisons
IPC: A01N25/00
Filed: 1921-09-15
Abstract: 187,424. Hutchings, H. E. P., (trading as Hutchings Co.). Sept. 15, 1921. Vermin-destroying compositions.-A bait for rat or mouse extermination comprises a biscuit made of flour, oatmeal, cheese, fish, meat, &c. mixed with sodium fluoride, barium carbonate, squill or oxalic acid. A depression stamped in the biscuit contains phosphorous compound, or other poison, which is protected by a, coating of paraffin wax.
Patent GB-534153-A (GB)
Title: Improvements in or relating to tuned circuit arrangements of the concentric resonantline type
IPC: H03B5/18
Filed: 1939-08-25
Abstract: 534,153. Coil-less resonators ; valve generating and amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 25, 1939, No. 24538. Convention date, Aug. 25, 1938. [Classes 40 (iii) and 40 (v)] A coil-less resonator of the coaxial cylinder type is furnished with a number of condenser plates, preferably arranged symmetrically on opposite sides of a potential node, for assooiating the resonator with one or more valves. The plates may be cylinders or discs. The invention is shown in connection with two oscillator valves connected in parallel, Fig. 4 (not shown), a pushpull oscillator and a push-pull neutralized power amplifier, Fig. 5 (not shown) and as a step-down or step-up inter-valve coupling in an amplifier, Figs. 7 and 8 (not shown). In another arrangement, Fig. 6, the condenser plates which are of large diameter and are accommodated in an enlargement of the outer cylinder associate the resonator with an oscillator 43, 44, amplifier 45, 46 and valves 48, 49 acting with a modulator 17 when a switch 50 is in its right-hand position, to give frequency modulation. Amplitude modulation is provided when the switch is in its other position. Fig. 9 shows the mechanical arrangement of a resonator with the condenser plates 8, 9 and associated valves 53, 54. The plates may be adjustably mounted.