baber/WOPTO huggingface dataset:
Patent GB-828945-A (GB)
Title: Automatic nail gun
IPC: B25C1/00
Filed: 1957-05-02
Abstract: 828.945. Nailing apparatus. LAUCHER, R. G. May 2, 1957 [May 3, 1956], No. 14057/57. Class 89(3)  A nail gun comprises a hammer rod 19, Fig. 1 movable from a cocked position in a work direction under influence of fluid pressure, support means 36 for carrying a nail 29. in an elevated position with respect to the work surface 43 and in driving alignment with respect to the hammer rod, and shearable means for resisting movement of the hammer rod in its work direction until the fluid pressure directed against the hammer rod is sufficient to cause the hammer rod to shear the shearable means and permit conversion of potential energy of the fluid pressure to kinetic energy of the hammer rod and nail. As described, the shearable means is a ribbon 30, Fig. 8, comprising a series of nail head washer members 32 separated by index grooves 31, each washer member carrying a nail 29. The gun is actuated by depressing a trigger 49 which admits fluid pressure from a supply passage 68 in the handle 14, into a chamber 57a, through a port 76 and into a chamber 15. The pressure in the chamber 57a forces down a hollow piston 54 which through a lever 79 moves a rail indexing rod 27 against a compression spring 48 whereby a pawl 44 carried by the rod 27 rides over the head of the next nail to engage an index groove 31, Fig. 8 in the ribbon 30. The pressure in the chamber 15 acts upon a piston 17 carried by the hammer rod 19 causing the lower end of the rod to engage the head of the nail 29 aligned therewith and this pressure continues to build up until it is sufficient to shear a washer 32 from the ribbon 30 so that the rod 19 and nail 29 carrying the washer 32 move downwardly to drive the nail into the work surface 43. A knife 42 carried by the rod 19 cuts off the end of the ribbon from which a washer 32 was cut on the previous nail driving operation. When the trigger 49 is subsequently released, it moves upwardly under the influence of fluid pressure and exposes cross ports 71, Fig. 6 in the hollow piston 54. The ports 71 comprise suction orifices through which fluid in the chambers 57a and 15 is withdrawn due to the flow of fluid pressure from the passage 68, through ports 70, along a passage 59, nozzle 60 and passage 58 to the atmosphere via the lower part of the housing 13. Low pressure is thereby developed in the chambers 15 and 57a so that the pistons 17 and 54 return to their uppermost positions as shown in Fig. 1 in preparation for the next nailing operation. Upward movement of the piston 54 allows the index rod 27 to move to the left to the position shown in Fig. 1, assisted by the spring 48, so that the ribbon is indexed by the pawl 44 to move the next nail into axial alignment with the rod 19. The nail ribbon 30 is slidably carried by a U-sectioned nail cartridge 33.
Patent GB-944870-A (GB)
Title: Improvements in semiconductive devices
IPC: G05F3/16
Filed: 1960-04-21
Abstract: 944,870. Voltage stabilizers. SHOCKLEY TRANSISTOR CORPORATION. April 21, 1960 [May 8, 1959], No. 14071/60. Heading G3X. [Also in Division H1] A voltage regulator comprises a transistor device constructed and arranged to operate in a circuit so that the negative resistance effect due to avalanche at the collector junction balances the positive resistance through the device to provide zero dynamic impedance across the contacts of the device. Fig. 1 shows a PNP device having a constant voltage portion in its voltage-current characteristic as shown in Fig. 3, due to the interaction of avalanche multiplication at the collector junction and the alpha of the emitter-base region. The device is of the type in which alpha increases with increase of emitter current and this may be achieved either by connecting a resistor across the emitter-base junction (as shown in Fig. 1) or by using material such as silicon which can provide an increasing carrier lifetime in the base zone with increasing emitter current; the use of gold as an activator for this purpose is mentioned. The way in which the negative resistance effect at the collector junction may be made equal to the positive resistance of the other portions of the device, to give zero dynamic impedance is described, reference being made to the effects of base width, impurity concentration, diffusion lengths, temperature coefficients of diffusion lengths and other parameters, changes in alpha etc. Figure 7 shows PNP structure having a guard ring arrangement; the base zone consists mainly of weak nmaterial with a region of normal N material at the centre adjacent the collector junction and a ring of N+ material around the emitter junction which reduces surface sensitivity. The two regions of differing impurity content at the collector junction provide flexibility in design to achieve temperature and resistance compensation since different avalanche multiplication factors apply at the two regions. In one example a layer of P 2 O 5  was deposited on an N-type silicon wafer and heated to 1300C.for 1 hour in oxygen to produce a PNP arrangement. A PNPN device is also described.
Patent GB-1545823-A (GB)
Title: Rack for vehicles
IPC: B60R9/05
Filed: 1976-04-07
Abstract: The roof-rack has one or more tubes (3) which extend transversely to the direction of travel of the vehicle and at least one of which is provided with an air-permeable cover (6) essentially over its entire length. The inside circumference of the cover (6) is larger than the outside circumference of the tube (3). Thus at least one air pocket (8) is produced between the cover (6) and the outside surface of the tube (3) during travel by the stream of air caused by the slipstream. During travel, the stream of air flows against the reticulate cover (6) and penetrates it, so that it passes over the outside surface of the tube (3) at at least one point. The cover muffles the noises produced by the tube during travel. <IMAGE>
Patent GB-553709-A (GB)
Title: An improved method of and apparatus for spherical grinding
IPC: B24B11/00
Filed: 1941-11-03
Abstract: 553,709. Grinding spherical-ended bar gauges. THOMPSON, B. I. Nov. 3, 1941, No. 14166. [Class 60] Spherical bar gauges are formed by rotating a bar 20 about a transverse axis at the middle of its length so that its ends engage a grinding surface 21 which is concave in a plane at rightangles to the direction of movement of the work at the point of contact and curved about a centre at the middle of the length of the bar. The bar is supported by clamps 19 on a rotating carrier 15 and its ends engage the concave surface 21 of a grinding wheel 11. The carrier 15 and a diamond 25 for trueing the wheel 11 are mounted on a table which is movable longitudinally parallel with the axis of the grinding wheel to bring the bar 20 or the diamond tool holder 23 in alignment with the wheel 11. By means of a slip gauge and vertical gauge plate 27 the cutter 25 is set on a radius equal to half the length of the gauge 20 and is then moved from side to side to true the surface of the wheel 11. Adjustable stops 28 are provided to engage a projection 29 to facilitate setting of the slide table.
Patent GB-560768-A (GB)
Title: Improvements in or relating to controls for ships' engines
IPC: B63H21/22
Filed: 1942-10-08
Abstract: 560,768. Propelling ships. PAINE, H. SCOTT-. Oct. 8, 1942, No. 14166. Convention date, Dec. 11, 1941. [Class 114] To enable the pilot of a motor boat to control the power plant from the bridge an operating handle 10, Fig. 3, is moved over a control box 11 which is marked with sectors indicating "ahead," " neutral " and "astern," and from the "ahead" position the control handle can be moved on to a graduated surface which enables the throttle of the engine to be opened to varying degree in order to control the speed of the engine. The handle 10 also controls the position of the throttle when in the " astern " position. The handle 10 is on a shaft which drives by belt gearing a cam shaft 23 arranged in a cam box 30, and the cam 23 is connected by a flexible shaft 41 to the pointer 42 of a telegraph device which reproduces in the engine room the position of the handle 10. The throttle of the carburettor 54 is controlled by a cam 25 against which is pressed by means of a spring 32 a cam follower 28 the movement of which opens the throttle to a maximum which is determined by a nut 34 adapted to limit the inward movement of the follower. The cam shaft 23 is fitted with cams C<1>, C<2>, C<3> which operate electrical signalling devices L<1>, L<2>, L<3> which may be in the engine room, with a cam 56 which controls the timing of the ignition, a cam 60 which changes the gears in a box 63, and with a cam 76 which actuates a valve 72 to connect the carburettor- 54-to one of two pipes 70, 71 supplied with fuel oils of different grade.
Patent GB-1049651-A (GB)
Title: Improvements in or relating to flooring materials and methods for the manufacture thereof
Inventor: MOSS DENNIS ARTHUR
IPC: D06N3/00
Filed: 1963-04-09
Abstract: Flooring materials are made by coating a film-casting substrate with one or more layers of a vinyl resin paste followed by curing, and providing a continuous polymerized vinyl resin wear layer on the material so formed, the film-casting substrate being removable at any stage in the method after curing.  The wear layer may be applied by coating with a vinyl resin paste followed by curing or by laminating using a pre-formed transparent calendered vinyl resin lamina.  The film-casting substrate may be made of paper, e.g. Kraft paper coated with silicone resins or polyvinyl compounds e.g. polyvinyl alcohol. The vinyl resin paste preferably consists of polyvinyl chloride together with a plasticizer and optionally stabilizers, fillers, pigments, viscosity depressants, and/or solvents.  Decorative patterns may be provided on the flooring material (a) by printing the pattern on the bottom (or top) layer after curing and adding a transparent wear layer (b) or, where the transparent wear layer is in the form of a lamina, by printing the pattern on the side of the lamina which is placed face downwards.  Plain, coloured, or mottled floor materials may be prepared having either a smooth surface or an embossed pattern thereon.  The flooring materials generally have a thickness of at least 0.04 inches.  The coatings may be applied by a doctor knife with over-roll or over-blanket spreading. Alternatively, roller coaters, hot melt coaters, and extrusion coaters may be used.
Patent GB-1134001-A (GB)
Title: Improvements in or relating to steam turbine installations
Inventor: FRANKEL ADOLF
IPC: F01D25/28
Filed: 1965-04-02
Abstract: 1,134,001. Steam turbine plant. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 4, 1966 [April 2, 1965], No. 14184/65. Heading F1T. Bearing pedestals for the H. P. cylinder 1 and first and second I. P. cylinders 3, 5 of a steam turbine installation are mounted on a steel subframe together with a hydraulic system for operating emergency stop and governor valves to form a unit which is transported to the site of the installation. The hydraulic system comprises an oil storage tank 71 pressurized by nitrogen supplied from a bottle 73 and supplying oil via pumps 77, non-return valves 83 and filters 92 to a main 93 connected to a bank of accumulators 97 pressurized by nitrogen from a bottle 99. The main 93 supplies oil via overspeed trip valves 129, 127 to a feed main 135 from which the oil is distributed to combined steam isolating and emergency stop valves 45, steam interceptor valves 53 and 67 and governor valves 47, 57 and 63. Suffix P denotes a pilot valve in each case. The oil is returned to the tank 71 via chain lines D. Relief valves 84 vent oil to the tank 71 if the pump discharge pressure is excessive. Excess oil is returned to the tank 71 via water-cooled heat exchangers 87 by means of relief valves 85 operated by oil pressure applied via a line 95. The tank 71 has an electric heater 137 and a relief valve 139 for discharging excess oil to a reservoir tank.
Patent GB-938283-A (GB)
Title: Improved compressed air distributor
IPC: B60T15/04
Filed: 1961-04-20
Abstract: 938,283. Fluid-pressure valves. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. April 20, 1961 [April 20, 1960], No. 14259/61. Class 103 (1). A compressed air distributer comprises one or more distributer sections B 1 , B 2 , each comprising an operating piston and cylinder assembly, the brake actuating means being connected through the cylinder space and a check valve to the exhaust or a source of pressurized fluid, and a piston 8 and cylinder 7 operated by pressurized fluid from an emergency auxiliary device (not shown). The piston 8 operates, after an initial displacement, on that part of a control lever 4 which normally operates the distributer section or sections. The piston 8 may be actuated by compressed air or oil. A chamber 1 feeds, through valves 12, 14, chambers 16, 18, respectively which in turn feed the brake cylinder actuating chambers 28, 30 through valves 24, 26. Pistons 36, 38 each possess an exhaust port and are operated by springs 40, 42 in association with a balancing element 3 and the manually actuated lever 4. Embodiments which include three distributer sections are also described (Figs. 2 and 3, not shown), in which the balancing elements differ in construction.
Patent GB-1116298-A (GB)
Title: Improvements in cutter heads for hair-cutting machines
IPC: B26B19/06
Filed: 1967-03-29
Abstract: 1,116,298. Hair clippers. EISEMANN G.m.b.H., and A. POPP, [trading as ALFRED POPP METALLWARENFABRIK]. 29 March, 1967 [30 March, 1966], No. 14262/67. Heading B4B. In a cutter head for a hair clipper, of the kind provided with a fixed lower cutter 1 and a reciprocating upper cutter 2 which is guided at a fixed distance from the lower cutter by means of a guide rod 5 mounted at its ends in two support members 6 secured to the lower cutter, each of the members 6 is provided with a rodlocating recess 7 and the members 6 are joined together by a bridge 9 which is secured to the lower cutter by a screwed connection. Each recess 7 is limited by a wall 8 of the member 6. The bridge 9 is provided with a projection 26 having a bevelled edge 27 abutting against the rod 5. The screwed connection comprises a bolt 14 secured against rotation in the lower cutter and extending through a slot 11 in the upper cutter, through a hole 13 in the bridge 9 and through a hole 19 in a sealing cover 18, the end of the bolt having a lock nut 15 screwed thereon with a spring 16 interposed between the nut and the bridge. Alternatively, the bridge may be resilient in which case the screwed connection comprises a screwthreaded bolt which has a head inserted in the lower cutter and constructed as an adjusting element, the bolt engaging in a tapped bore in the bridge. The members 6 each have a pin 24 engaging a hole 25 in the lower cutter. The members 6 with the bridge 9 and its projection 26 constitute a single component which is preferably moulded from glass-fibre reinforced nylon. The cover 18 is secured to the members 6 by means of pins 20 engaging holes 21, the pins being replaced or supplemented by a locating strip 22 which can snap into notches 23 formed in the members 6.
Patent GB-789221-A (GB)
Title: Improvements in or relating to springs
IPC: F16F1/10
Filed: 1954-05-14
Abstract: 789,221. Springs. ABBEY, A. (Lermont, B.). May 14, 1954, No. 14269/54. Drawings to Specification. Class 108(3) [Also in Group XXII] The invention relates to a resilient metal strip which, when free of external forces, coils up closely upon itself. This effect is obtained by forming each increment of length, to a radius of curvature which is at least equal to, and not greater by more than the thickness of the strip than, the radius of the increment upon which it coils itself in the adjacent layer. The spring may have a core which may be of circular or elliptical cross section. The stiffness of the spring may vary from positive to negative. The strip may be of stainless or high carbon steel and may be of arcuate shape in cross-section. The set in the spring is formed by drawing it over a roller (see Group XXII).
Patent GB-612153-A (GB)
Title: Improvements in or relating to rotary tippler apparatus
IPC: B65G67/00
Filed: 1946-06-13
Abstract: 612,153. Rotary tipplers. MITCHELL, F. G. June 13, 1946, No. 14372. [Class 78 (iv)] In a rotary tippler of the type comprising a cradle that has rails 34 for carrying a vehicle and is mounted to move angularly on a plurality of anti-friction members 28, 30 mounted at each end of a supporting structure 10, the cradle having at least two arcuate or annular rockers 20, 22 mounted on the anti-friction members to permit the cradle to turn about a fixed axis of rotation 19 during the tipping operation, two of the anti-friction members 28, 30 at each end of the supporting structure 10 are situated near the top of the cradle. The supporting structure comprises two pairs of vertical posts 16, 18, one pair at each end of the structure, on which the anti-friction members 28, 30 are mounted respectively. Four rollers are mounted at each end in spaced relationship, two rollers being near the top and two below the axle of the cradle. To prevent the vehicle from leaving the rails 34 when the cradle is inverted, horizontal lateral clamping arms 42, 44 are provided on the supporting structure to engage longitudinals 38, 40 of the vehicle. The rockers 20, 22 are rigidly connected by longitudinal members 26 and each rocker subtends an angle of about 270 degrees to provide a gap 24 in the cradle through which material in the vehicle can pass when the vehicle is inverted. Arcuate toothed racks 64, 66 are provided on the rockers 20, 22 to mesh with pinions 60, 62 carried on two shafts 56, 58 driven in unison through reduction gearing 52 from a motor 50.
Patent GB-580936-A (GB)
Title: Improvements relating to centrifugal dust separating and collecting apparatus
IPC: B04C5/28
Filed: 1944-07-28
Abstract: 580,936. Dust separators. BUELL COMBUSTION CO., Ltd., and TYLER, G. B. July 28, 1944, No. 14474. [Class 23] A number of dust-separating units 1 are arranged horizontally or substantially horizontally, the gas entering each from a manifold 21 and being whirled by guide vanes 10. Peripheral dust ports in a part 12 lead to a manifold 13, the gas passing through these ports re-entering 1 through a hole 15a. Cleaned gas is led through a tube 2 in each unit to a collecting manifold 22. Each unit 1 may be supported within a tube 3, which is welded to a wall 4, a sealing ring 8 being provided. Bolts 5 and plates 7 hold the units in position. Two sets of units may be arranged as shown in Fig. 7, plates 9, 9a separating the manifolds 21, 22. The separating plate or plates may be arranged horizontally. Where high temperatures or corrosive gas conditions have to be dealt with, refractory brickwork or cast metals may be used A suction fan for the gases may be used.
Patent GB-1377135-A (GB)
Title: Magnetic devices
IPC: G11C19/08
Filed: 1972-03-29
Abstract: 1377135 Magnetic storage devices WESTERN ELECTRIC CO Inc 29 March 1972 [31 March 1971] 14624/72 Heading H3B In a single wall magnetic domain device, the magnetic material layer in which the domains are propagated has a magnetic property which is non-uniform through the layer thickness, the arrangement enabling a domain to be confined to certain zones through the thickness of the material, or sublayers, according to the intensity of the bias field. As shown in Fig. 2 the magnetic material layer is formed on a substrate 20 and consists of sublayers 21, 22, 23 characterized by different magnetic moments. Magnetically soft T and bar-shaped elements 12 on the magnetic material layer define a domain propagation path, the propagation being effected by a rotating magnetic field in the plane of the layer. If the magnetic moment of the intermediate sublayer 22 is higher than that of the outer sublayers 21, 23, a sufficiently high bias field applied orthogonally to the layer contracts a domain DO initially extending through all three sublayers so that it is confined to sublayer 22 only. Alternatively with the magnetic moments of the outer sublayers higher than that of the intermediate sublayer, Fig. 4, a sufficiently high bias field divides a domain into two small domains each restricted to a respective outer sublayer. In a further arrangement, Fig. 6, two sublayers 21, 22 of different magnetic moment are provided, the contracted domain DO being confined to the sublayer 21 of higher magnetic moment. As an alternative to graded magnetic moment the wall energy may be graded. The substrate may be polished Gd Ga garnet which is dipped consecutively into liquids of Europium erbium gallium garnet (EuEr 2 Ga 0À5 Fe 4À5 O 12 ), Europium erbium aluminium garnet (EuEr 2 - Ga 0À5 Fe 4À5 O 12 ), Europium erbium aluminium garnet (Eu 1À5 Er 1À5 Al 0À4 Fe 4À6 O 12 ) and again Europium erbium gallium garnet, to form the sublayers. To avoid abrupt charges of magnetic property at the interface between the sublayers, a graded transition may be produced during manufacture by temperature control.
Patent GB-762470-A (GB)
Title: Improvements relating to bayonet type electrical plug connectors
Inventor: YATES ARTHUR
IPC: H01R13/502
Filed: 1953-05-26
Abstract: 762,470. Two-part couplings. BRITISH THOMSON-HOUSTON CO., Ltd. April 1, 1954 [May 26, 1953], No. 14627/53. Class 38 (1). A bayonet plug is longitudinally divided into two separable parts 4, 5, each part carrying a contact to which is connected one end of a conductor 2 connecting a number of lamps 1 in series. The parts are located by a mortice and tenon and held together by a screw for insertion in a socket. Fig. 7 shows a modification wherein the parts are held together by a T-shaped tongue 9 on part 4b which tongue can be drawn through a slot 10 in part 6b to separate the parts when they are located at 90 degrees to each other.
Patent GB-281738-A (GB)
Title: Improvements relating to wheels for road vehicles
IPC: B60B9/20
Filed: 1926-06-10
Abstract: 281,738. Corney, N. S. June 10, 1926. No Patent granted (Sealing fee not paid). Spring wheels comprise a hub a surrounded by a pneumatic tyre b connected to the road tyre c by radially sliding spokes d which are supported by spaced rings e', e<2>. The spokes d have heads d<1>, which bear on the tyre b, and at the outer ends engage in the cavities of cup-shaped shoes h in the road tyre c. Side-covers k'. k<2> are bolted to the rings e<1>, e<2> and to the hub a. In a modified construction, two rings of spokes bear on a single pneumatic tyre around the hub, but each ring of spokes has a separate road tyre. Short balance arms are interposed between the corresponding spokes of each ring.