baber/WOPTO huggingface dataset:
Patent GB-1322738-A (GB)
Title: 5-3-perfluoroalkyl-1,2,4-oxadiazolyl-olefins and polymers thereof
IPC: C08L39/04
Filed: 1970-06-15
Abstract: 1322738 Coating CIBA-GEIGY AG 15 June 1970 [16 June 1969] Heading B2E [Also in Divisions C2 and C3]  Oil- and water-proof coatings are obtained from homopolymers and copolymers of compounds of formula wherein m is 1 to 18, R 1  is -CH=CH 2  or -C(CH 3 )=CH 2  and R is the ethylenically unsaturated hydrocarbon radical derived from fumaric, maleic, citraconic, mesaconic or itaconic acid. Lists of comonomers are given, those exemplified being n-octyl-methacrylate, 2-ethyl-hexyl methacrylate, methyl, ethyl, isobutyl, 2-methoxyethyl and 2,2,2-trifluoroethyl vinyl ethers and styrene. The coating composition may contain polymers of other ethylenically unsaturated compounds. Lists of such other polymers are given, those exemplified being poly-n-octyl methacrylate and ethylenepropylene and butadiene-styrene copolymers. Substrates specified are fibres, e.g. cotton, wool, fibreglass, silk, regenerated cellulose, cellulose ethers and esters, polyamides, polyesters, polyacrylonitrile, polyacrylates and blends thereof, or leather, paper, wood, masonry, metal, plastics, glass and painted surfaces. Coatings are applied by conventional methods, e.g. dipping, spraying, brushing, padding and roll coating.
Patent GB-909718-A (GB)
Title: Improvements in and relating to ultrasonic testing
Inventor: TAYLOR HAROLD WILLIAM
IPC: G01N29/04
Filed: 1959-08-24
Abstract: 909,718. Ink-ribbon mechanisms. KELVIN & HUGHES Ltd. Aug. 19, 1960 [Aug. 24, 1959], No. 28920/59. Class 100 (4). [Also in Group XL (c)] In pulse-echo ultrasonic testing apparatus (see Group XL (c)) the echo signal from a flaw in test piece 11 causes a stylus 4 to vibrate and mark the test piece via a ribbon 10 coated with a hard wax containing a dense pigment or aniline- or glycerine-based ink. Guide rollers 12, 13 hold the ribbon close to the test piece and the ribbon is wound from one drum to the other in dependence on the extent of its use by rack 19, pawl and ratchet mechanism 18 and pinion 16. The ribbon is tensioned by spring-loaded rollers 20, 21. The ultrasonic transducer and marking device are mounted on a carriage and moved over the test piece with the transducer leading; flexible rod 26 prevents tearing of the ribbon when it is temporarily held between stylus head 24 and the test piece surface. In another embodiment a continuous ribbon is used, a series of spring-loaded rollers are provided to store a length of ribbon, and one guide roller is belt driven from wheels running over the test piece, Fig. 3 (not shown). Different strata of the test piece may be examined by a plurality of gates each feeding a marking mechanism with a differently coloured ribbon.
Patent GB-257785-A (GB)
Title: Improvements in or relating to pianofortes
IPC: G10C3/02
Filed: 1925-11-17
Abstract: 257,785. Collen, R. H., and Broadwood & Sons, Ltd., J. Nov. 17, 1925. Pianoforte cases.-A central section B of the top door forming a reading desk is pivoted to the side sections which are connected at their lower parts by a rail C against which the central section bears when vertical and at their upper parts by distance pieces to a rail E against which the central section bears when inclined as a desk. The pivots b are arranged above the centre of the desk. The fall G is hinged in two parts to fold clear of the desk.
Patent GB-1135871-A (GB)
Title: Liquefaction of natural gas
IPC: F25J1/02
Filed: 1966-06-28
Abstract: 1,135,871. Natural gas liquefaction process. AIR PRODUCTS & CHEMICALS Inc. 28 June, 1966 [29 June, 1965], No. 28964/66. Heading F4P. Natural hydrocarbon gas having been freed of hexane and most of the pentane content in separators 12, 20, 34, 36 is fed at 600 p.s.i.a. through lines 50, 51 to the base of a vertical coil 52 where the residual gas is cooled to its liquefaction temperature in indirect heat exchange with successive sprays 82, 84, 86, 88 of at least four liquid refrigerants at decreasing temperatures; said liquid refrigerants being obtained by separation from a mixture thereof in a four-stage column 92 followed by expansion in valves 102, 107, 113, 119 resulting in a temperature fall prior to delivery from the spray heads 82, 84, 86, 88. The multi-component refrigerant mixture of Cl to C 6  saturated hydrocarbons and nitrogen is supplied by a compressor 94 at about 515 p.s.i.a. to the first stage 99 of column 92. Liquid C 2- C 6  hydrocarbons are expanded at 102 and issue from spray 82 whilst gaseous hydrocarbons and nitrogen are cooled in a coil 74 beneath spray 82 and fed to the second stage 104 from which liquid C 2 -C 4  hydrocarbons are withdrawn expanded at 107 and issue from spray 84 whilst gaseous hydrocarbons and nitrogen are cooled in a coil 76 beneath spray 84 and fed to the third stage 110. Liquid C 1 -C 3  hydrocarbons are withdrawn from stage 110 and expanded at 113 and issue from spray 86 whilst residual gas is cooled in a coil 78 beneath spray 86 and fed to the fourth stage 116 which in turn supplies liquid refrigerant to spray 88 whilst the residual gaseous methane and nitrogen is liquefied in a coil 80 beneath spray 88, expanded at 122 into a spray 90 which further cools the liquefied natural gas leaving the head of coil 52 and having itself been expanded at 54 to about 200 p.s.i.a. The product is further expanded at 58 to atmospheric pressure and fed into a storage tank 59. After being vaporized the four liquid refrigerants are recombined withdrawn through a line 124 at 41 p.s.i.a. and recycled back to compressor 94 together with make-up refrigerant mixture which together with the original charge is obtained by passing condensate from the separators 20, 34, 36 into a conventional fractionating plant 23 having flow valve controlled withdrawal lines 138, 140, 142, 144, 146 connected to a common line 126 to which is added nitrogen from an air separation plant 128.
Patent GB-915960-A (GB)
Title: Improvements in or relating to radar systems
Inventor: RUST NOEL MEYER
IPC: G01S7/36
Filed: 1949-11-11
Abstract: 915,960. Radar. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Aug. 15, 1950 [Nov. 11, 1949], No. 28999/49. Class 40 (7). In a F.M. radar system the transmitted frequency is cyclically modulated parabolically and the heat-frequency between the transmitted and reflected waves varies linearly with time over the period of the cycle; the sweeping oscillator frequency is varied, during each cycle, successively in accordance with a series of linear functions having gradients which correspond with those of the beat frequency functions developed at different target ranges; the beat frequency and the output of the sweeping oscillator are mixed and passed through a low-pass filter to the display C.R.T. As shown, the curves of the transmitted and reflected frequencies F0, F1 are parabolas separated by the echo time E1 The line E1, in the lower Figure, represents the frequency difference between F0 and F1 during the interval T-E1 where T is the period of the cycle. Where E1 is small relative to the time T the beat frequency during the interval 0 to E1 is ignored. The gradient of E1 is proportional to the range and the compound frequency spectrum due to several targets is analysed by a sweeping oscillator of which the frequency is successively given a series of linear variations having gradients corresponding to successive ranges.
Patent GB-408031-A (GB)
Title: Improvements in or relating to oil burning plants
IPC: F23C5/02
Filed: 1932-10-17
Abstract: 408,031. Liquid-fuel furnace fronts; mounting burners ; electric switches. SQUIRE, T. R., 53, Victoria Avenue, Whitley Bay, Northumberland. Oct. 17, 1932, No. 29016. [Class 51 (i).] In a combined furnace door and burner air casing for oil-burning plants, the furnace door 9, the burner air casing 8 and the blower casing 3 are rigidly or integrally connected and arranged to pivot about the axis of the blower casing. Disposed in front and to the side of the furnace opening is a base 1 carrying a vertically disposed motor 2 for driving the blower 3 and a fuel pump 5 which is secured on the top of the blower casing for rotation therewith and driven through an extension shaft 4. An air conduit 7 extends tangentially from the blower casing 3 and carries the burner air casing and furnace door. The burner 12 is arranged coaxially with the air casing 8 and is connected to the fuel pump by a rigid pipe 13. The furnace opening is provided with a Venturi ring 10<a> and a flamestat 15. A latch 11 on the furnace door comprises an arm pivoted at 18<a> in a bracket 18 and is arranged to operate a switch so that the circuit of the motor is closed only when the furnace door is closed. As the door closes, the chamfered end 11<a> of the latch pushes upwards a pivoted pawl 20 carrying at the free end a roller 24 which in turn pushes up a spring contact arm 25 into engagement with a second contact arm 27.
Patent GB-484152-A (GB)
Title: Improvements in motor vehicles with central longitudinal chassis members
IPC: B60K5/02
Filed: 1936-10-27
Abstract: 484,152. Motor vehicles. ZAVODY TATRA AKCIOVA SPOLECNOST PRO STAVBU AUTOMOBILU A ZELEZNICNICH VOZU. Oct. 27, 1936, No. 29210. Convention date, Dec. 24, 1935. [Classes 79 (iii) and 79 (iv)] In a motor vehicle in which the engine 1 and gear box 3 form part of a central longitudinal chassis frame member, an intermediate ring shaped section 2 is provided, connected to the vehicle body 6 and carrying the front wheels suspension, so that the gear box, as well as the engine, may be detached leaving the front and rear axles positioned by the attachment to the body. The several parts are assembled by means of flanges, the. transmission members passing through the gear box and tube 4 being suitably constructed to allow removal after slight separation of the adjacent sections. The stub axle supports 10 for the steering wheels are carried by a transverse spring 5 and pivoted links 7 attached to the section 2, and may be stayed by rods 8 ball jointed to the gear box.
Patent GB-1465697-A (GB)
Title: Razor blades
IPC: B26B21/56
Filed: 1973-06-20
Abstract: 1465697 Razor blades WILKINSON SWORD Ltd 24 May 1974 [20 June 1973] 29275/73 Heading B4B A razor blade comprises a cutting edge, the cross-sectional shape of which being such that the widths between the facets 11, 12, or 13 measured in micrometres at certain distances 0 to 40 back from the tip of the cutting edge lie within a specified range, the included angle beween the tip facets lying within the range of 12 to 17 degrees of arc over the range of distances 40 to 100 micrometres back from the tip. The tip facets carry one or more coatings of metals, alloys or refractory materials. A final coating of a polymer e.g. P.T.F.E. may then be applied
Patent GB-352829-A (GB)
Title: Improvements in and relating to the manufacture of moulded articles of rubber
IPC: C08J3/24
Filed: 1930-09-30
Abstract: Rubber articles are moulded under heat and pressure, and then vulcanized after removal from the moulds in a heated liquid under a pressure higher than that of saturated steam at the vulcanizing temperature.  The liquid may be heated by the admission of steam thereto, and the pressure produced by compressed gas on the surface of the liquid, e.g. in an autoclave.  Consolidation and uniform heating of the article is improved by the employment of a liquid having a density only slightly less than that of the article, and by keeping the liquid in motion.  According to an example, rubber belting is moulded in a press for 10 mins. at 143 DEG  C.  This is immersed in a solution of calcium chloride, s.g. 1,35 in an autoclave, and heated by the introduction of steam to 143 DEG  C. for 50 mins., the pressure being raised to 9 kg. per sq. cm. by the admission of compressed air to the upper part of the vessel. Specification 341,143 is referred to.
Patent GB-887107-A (GB)
Title: Automatic machine for stamping and forming sheet-metal parts from strip material fed thereto
IPC: B21D43/11
Filed: 1958-09-12
Abstract: 887,107. Metal-strip feeds. BERNING- HAUS, R., and BERNINGHAUS, K. Sept. 12, 1958 [Sept. 14, 1957], No. 29347/58. Class 83 (4). A strip feed for a high-speed stamping machine comprises a stationary gripper and a reciprocating gripper moved in the direction of feed in dependence on the movement of the stamping device, both grippers being opened and closed by oscillating cams on a shaft extending parallel to the direction of feed and driven by the ram, the cams acting on the movable parts of the grippers through fixedly mounted levers. A reciprocating gripper 4 and a stationary gripper 3 are mounted in the machine frame 28. The upper jaw of each gripper is spring-biased while the lower one is movable by a handle 25 to facilitate entry of the strip material to be fed. The movable gripper 4 is mounted on a slide plate 15, and a roller 20 bearing on a rail 21 is attached to the upper jaw 6. The gripper jaws are closed by a pivoted lever 33 acting through the rail 21 in the case of the gripper 4 and through an element, not shown, in the case of the stationary gripper 3, the lever being operated by a camshaft 27 driven by a toothed rack attached to the press ram. The gripper 4 is reciprocated by a connecting rod 42 to which is attached a spring-mounted member 43 slidable on a pivoted rod 39 connected to the slide plate 15. Idle rolls 50, 51 co-operate with rolls 47, 48, 49 which are driven through a one-way clutch by a rack, attached either to the housing 14 of the gripper 4 or to the slide plate 15, the rolls acting to straighten the strip material and to assist the feed.
Patent GB-298578-A (GB)
IPC: B21D49/00
Filed: 1928-10-11
Abstract: 298,578. Betz, P. Oct. 11, 1927, [Convention date]. Metal tubes; paper tubes.-Electrical insulating tubes of paper with a sheet metal cover extending to within a short distance of the ends, are made by feeding paper tubing 8 cut into lengths and metal strip 6 through a cutting device, and then through pairs of rollers 4, 3, 2, 1 which fold the strip round the tubing in the usual way. The tube 8 is gripped resiliently between a spring-pressed lever 29 and the top plate 25 of a slidable block 12 which clamps the strip 6 between the plate 25 and a piston 23 actuated by a manually operated lever 36 and held in clamping position by the trigger arrangement shown in Fig. 5. The slide 12 moving forwards from the position 12, causes the forward ends of the tube 8 and strip 6 to engage rollers 10 which draw the tube and strip up to the covering rollers. At the end of its travel the slide 12 first engages a stop 20 which allows a rod 18 to fall and bring a feeler 15 into contact with the tube 8, and then a second stop 22 which releases the trigger mechanism shown in Fig 5, and frees the slide from the tube and strips. The further forward movement of the tube and strip causes the feeler to fall off the end of the tube and so close electrical contacts 17 which energize a magnet 13 to operate a knife located beneath the tube 8 and cuts the metal strip. A second opening 32 in the lever 29 is provided in order that a second tube may be got ready while the previous one is being prepared.
Patent GB-986207-A (GB)
Title: Improvements in and relating to corrosion
IPC: F01P11/20
Filed: 1962-07-31
Abstract: An anti-freeze composition comprises a water-miscible alcohol containing as an anti-corrosive agent a combination of an oil inhibitor comprising at least one sulphated oil, a borate of at least one alkali or alkaline earth metal, a nitrite of at least one alkali or alkaline earth metal, and at least one compound having the general formula <FORM:0986207/C4-C5/1> wherein X is a nitrogen atom, a methylidyne radical, an aminomethylidyne radical, a benzylidyne radical, or a guanidinomethylidyne radical, and R is hydrogen atom, an alkyl radical or, when X is nitrogen, an alkali metal; such compounds include benzotriazole, sodium benzotriazole, methyl benzotriazole, benzimidazole, guanidino benzimidazole, and 2-phenyl benzimidazole. The alcohol may be ethylene glycol and the oil inhibitor may be a mixture of mineral oil, sulphated cottonseed oil, tallow methyl ester and coconut oil.
Patent GB-1104653-A (GB)
Title: Improvements in or relating to electrical testing apparatus
IPC: G01R19/145
Filed: 1965-07-12
Abstract: 1,104,653. Test circuits. NEWALL ENGINEERING CO. Ltd. J.H. Phillips and K. Barraclough. June 30, 1966 [July 12, 1965], No. 29495/65. Heading G1U. [Also in Division H3] A test circuit, Fig. 1, comprises two triode indicator lamps 17, 18 connected as a long-tailed pair to a common cathode resistance 22. With no input applied to terminal 28, transistors 35, 37 are conducting and the potential at the collector of transistor 37 holds both lamps cut-off. Application of earth potential at terminal 28 switches off both transistors and the change in potential across the long tailed pair resistor 22 allows lamp 23 to switch on, lamp 24 being held off by the bias on its grid. Application to terminal 28 of a negative potential of greater magnitude than the bias on lamp 24 still switches off the transistors, but in this case lamp 24 lights. The circuit may be modified for positive inputs at terminal 28, and the elements may be mounted in a test probe, Fig. 2 (not shown) used in testing a mimic diagram.
Patent GB-1149535-A (GB)
Title: Improvements in or relating to variable capacity diodes
IPC: H01L29/00
Filed: 1966-06-30
Abstract: 1,149,535. Semi-conductor devices. FUJITSU Ltd. 30 June, 1966 [30 June, 1965], No. 29527/66. Heading H1K. A voltage variable capacitance diode is produced by alloy-diffusing a pellet containing antimony, gallium and tin together with lead or a mixture of lead and indium as a carrier, into an N-type germanium wafer, the distribution of the antimony diffused into the solid germanium from the melt being determined by the proportion of tin. In a first embodiment a pellet of lead containing 40% tin, 1% gallium and 0À5% antimony is produced by melting the constituents in a quartz crucible in an argon or nitrogen atmosphere and then cooling, rolling, and stamping. The pellet may be made spherical by heating in hydrogen. The pellet is placed on a 7 ohm-cm. N-type germanium wafer in a graphite or stainless steel jig and the assembly is heated to a temperature of 650 C. in a hydrogen atmosphere. This temperature is maintained for 30 minutes during which the germanium first dissolves in the molten alloy until the equilibrium composition is reached after which antimony diffuses out of the melt into the solid germanium to form an N-type layer the impurity concentration profile of which is determined by the amount of tin present in the alloy. On cooling the alloy recrystallizes to form a P-type region and produces a " hyperabrupt " junction with the diffused N-type layer. A lead is attached to the diode which is then subjected to known etching and surface treatments. In a second embodiment the alloy pellet contains 10% tin and is alloy-diffused at 680 C. for 70 minutes into a 5 ohm-cm. germanium wafer.
Patent GB-520156-A (GB)
Title: Improvements in sound recording
IPC: G11B7/00
Filed: 1938-10-13
Abstract: 520,156. Optical sound-recording apparatus. KODAK, Ltd. Oct. 13, 1938, No. 29666. Convention date, Oct. 13, 1937. [Class 40 (ii)] A method of recording variable area class B push-pull sound records comprises receiving an electrical signal corresponding to the sound, half-wave rectifying in positive direction a portion of the signal, operating a ribbon lightvalve in accordance with said half-wave, half-wave rectifying in the negative direction another portion of the signal and operating in accordance with this latter half-wave a ribbon light-valve having its ribbon or ribbons parallel and adjacent to the ribbon or ribbons of the first light-valve, the movement of the ribbons of both light-valves being recorded on a lightsensitive surface whose movement is in a direction substantially at right angles to that of the ribbons. In the arrangement shown in Fig. 1, the signal currents from a microphone 10 are transmitted by a transformer 13 to two rectifiers 14, 15 and the separate half-waves are passed separately to two double-ribbon light-valves 16, 17. The vibrations of the ribbons thus produced are recorded on a film 22 in the form of two half-wave phase-displaced tracks, as shown. In a modification, two single-ribbon light-valves are used having the two ribbon in a single strong magnetic field. The two half-wave tracks of the push-pull record producer in this case are joined by a line of uniform width. This line may be masked still further to reduce noise already considerably reduced by the push-pull recording. Specifications 441,293 and 479,083 are referred to. The Specification as open to inspection under Sect. 91 describes also the use of a mirror galvanometer to produce the tracks and similar methods for recording variable-density records. This subject-matter does not appear in the Specification as accepted.
Patent GB-760886-A (GB)
Title: Control mechanism for the movable electrode of a spot welding machine
Inventor: DELZANNO GIUSEPPE
IPC: B23K11/31
Filed: 1954-10-14
Abstract: 760,886. Welding by pressure. FIAT SOC. PER AZIONI. Oct. 14, 1954, No. 29689/54. Class 83 (4). In an electric spot-welding machine the movable electrode 31 is moved towards the stationary electrode 34 by a pressure liquid, the movement being opposed to an increasing extent by pneumatic means which return the electrode when the action of the pressure liquid ceases. The electrode 31 is fitted to the tapered end 5a of a holder 9 which is secured within and insulated from a piston 1 in a cylinder 4. The holder 9 slides within a sleeve 19 forming one end wall of the cylinder 4 and clamped thereto. The current supply cable is connected to the holder 9 by a nipple 15 and cooling water flows from the cable through a tube 16 in the holder into the electrode and returns through a bore 5b in the holder over the outer wall of the tube 16 to a fitting 17. Pressure water is supplied by a fitting 8 to move the electrodes together the piston 1 further compressing compressed-air supplied from a nipple 25. The air returns the piston when the water supply ceases. In a modification for use with an electrode eccentric with the holder the end of the holder adjacent the electrode is guided non-rotatively in a bronze bush held in the sleeve 19.
Patent GB-1024934-A (GB)
Title: Improvements in balers for hay and like harvested crops
IPC: A01F15/10
Filed: 1963-07-26
Abstract: 1,024,934. Baling press. SPERRY RAND CORPORATION. July 26, 1963 [April 3, 1963], No. 29717/63. Addition to 984,043. Heading B5F. In a side-feed baling machine of the type described in the parent Specification, the pin 51, about which the resilient driving link 42 is pivoted, is longitudinally adjustable within a slot 50 in the ram extension 48. The pin 51 carries a bracket 58 through which passes a screw-threaded rod 60, mounted in fixed bracket 61, so that upon rotation of the rod the position of the pin within the slot may be adjusted, the pin being locked in the required position by a locking nut 62. With reference to Fig. 4, it can be seen that any adjustment of the pin along the ram extension when the ram 15 is in its extreme forward position (shown in phantom lines) will produce only a negligible rotation of the bell-crank 38, 36 and a consequent negligible adjustment of the extreme retracted position of the feed carriage. Said adjustment will, however, produce a considerable rotation of the bell-crank when the ram is in its extreme rearward position (shown in full lines) and thus a considerable adjustment in the extreme forward position of the carriage as shown by lines 70, 74. The depth of penetration of the carriage into the bale chamber 11 may thus be adjusted whilst the length of the only stroke over platform 20 remains substantially constant.