baber/WOPTO huggingface dataset:
Patent GB-848759-A (GB)
Title: A stabilizing system for rotocraft
Inventor: SCHON RICHARD
IPC: B64C27/54
Filed: 1957-02-20
Abstract: 848,759. Controlling helicopters. VYZKUMNY A ZKUSEBNI LETECKY USTAV. Feb. 20, 1957, No. 5747/57. Class 4. [Also in Group XXIX] The cyclic pitch control of a helicopter is effected by a swash plate tiltable by hydraulic pillars located between the swash plate and a cam member controlled by a pilot, fluid spaces in the pillars being connected to a hydraulic cylinder, the piston of which is controlled by a fluid pressure regulator under the control of a gyroscope. The Figure shows blades 9 mounted on a hub 10 on a shaft 12, and controlled in pitch by links 7 attached to a swash plate 2. Hydraulic pillars 3 extend between the swash plate 2 and a cam plate 1 in the form of a truncated pyramid slidable on a base 11 by a pilot's control lever 13. Each pillar comprises a cylinder attached to a fixed bracket 6, and containing a larger diameter piston 4 abutting the cam plate 1, and a smaller diameter piston 5 connected to the swash plate 2. There are four such actuators, the interiors of each opposite pair being connected to the two ends of one of two cylinders 15 (one shown) containing a piston 18 linked by rod 19 to the piston 20 of a jack 21 controlled by a valve spool 26 operable by a gyro 27. A ported cylinder 25 cooperating with valve spool 26, and the jack piston 20 are both linked to a floating lever 31, providing a follow-up cut-off action when the jack piston has been displaced the correct amount for the setting of valve 26. The fulcrum of lever 31 is adjustable for trimming by a lever 34 which may be mounted on lever 13. Any deviation of the aircraft about the axis of gyro 27 displaces valve 26 and thus piston 20. Piston 18 is thus displaced, and fluid flows into one pillar 3 and out of the other, tilting the swash plate about an axis parallel to that of gyro 27 to correct the deviation. By moving lever 13, the pilot raises one piston 4 and piston 5 and lowers the others through cam plate 1, thus effecting voluntary cylic pitch control. Similar apparatus, including a gyro mounted about an axis perpendicular to that of the gyro shown, is provided for tilting the swash plate about a second axis, automatically or voluntarily. Valves 28 are provided in the bores leading from valve 26 to cylinder 20, and are adjustable by a lever 29, so that the pilot can close the valves, the automatic action then being disabled, or can fully open the valves, the apparatus acting then as an automatic pilot, or can choose an intermediate position, when the apparatus acts as an attitude deviation damping device.
Patent GB-852992-A (GB)
Title: Improvements in or relating to the jointing of conveyor, power transmission or the like belts
IPC: F16G3/04
Filed: 1958-02-22
Abstract: 852,992. Belt fastenings. MUSTABAR MINING EQUIPMENT CO. Ltd., LEBB, B,. and TEBBS, E. Feb. 12, 1959 [Feb. 22, 1958], No. 5828/58. Class 80 (1). In a wire hook type fastener the hooks are arranged in groups 10, 12 across the width of the belt the lengths of the legs of one group of fasteners being different to the lengths of the adjacent group. Additionally the wire thickness of one group may be of different gauge to the others.
Patent GB-585787-A (GB)
Title: Improvements in or relating to optical measuring instruments
IPC: G05D3/12
Filed: 1941-05-05
Abstract: 585,787. Optical pointers. SIGMA INSTRUMENT CO., Ltd., LOXHAM, J., and EMSLEY, H. H. May 5, 1941, No. 5845. [Class 97 (i)] [Also in Group XIX] Magnified indications of measurement displacements are produced by two mirrors arranged so that a beam of light falling on one is reflected to the other and thence bach to the first and so on, the inclination of the mirrors being chosen to produce a desired number of reflections, by displacing one of the mirrors about an axis chosen so that the number of reflections remains unaltered, the displacements being proportional to gauging movements. Fig. 1 shows the mirrors in horizontal section arranged at an angle alpha such that an incident beam 3 after successive reflections is returned as at 5. By rotating the mirror 2 about a horizontal axis the angle in the vertical plane between the incident and emergent beams is varied, thus permitting measurements. The movable mirror 2, Fig. 5, is carried by a block 23 supported by a horizontal spring blade 22 on a bracket 19 fixed to the casing, and by a second blade 21 fixed diametrically across a ring 17 urged vertically by a spring (not shown) and having a pin 18 engaging the head 16 of an anvil 14 vertically slidable in a guide 15. An anvil 13 fixed to the base 10 serves as a reference. A lamp housing 26 projects an image of a graticule on to a screen 30 via the mirrors 1, 2 and a mirror 29, a pointer carried by a band 33 over pulleys 34, 35 being movable over the image. In operation, a suitable distance piece is placed between the anvils 13, 14, if necessary after vertical adjustment of the body 12 on a pillar 11, vertical movement of the anvil 14 causing the springs 22, 23 to become distorted and to tilt the mirror 2 about a horizontal axis, thus moving the image of the graticule on the screen. The pointer is set against the scale image, the piece to be tested is placed between the anvils and the difference of reading of the scale gives a measure of the difference between'the pieces.
Patent GB-1243409-A (GB)
Title: A reinforced mould and method and apparatus for reinforcing said mould
Inventor: STRANDELL PER-OLOF
IPC: B22C9/06
Filed: 1969-02-04
Abstract: 1,243,409. Reinforced moulds. P-O. STRANDELL. 4 Feb., 1969 [7 Feb., 1968], No. 5890/69. Heading B5A. [Also in Division B3] A mould 10 has a mould cavity 12 in at least one end surface 11 thereof and a pretensioned reinforcement surrounding the body along at least a part of its length comprising at least one winding of strip material, the whole of the bottom face of each turn of a winding being in abutment with the upper face of the preceding turn. The winding may extend over the whole length 18 of the body with a second winding 19 superimposed over a part of the length which is subjected to greatest stress. Alternatively a winding 22 extends over the part of greatest stress and an insert 20 of the same thickness as the winding is placed beneath the winding 22 and the whole covered by a further winding 21. A bore 13 is provided for an ejector pin (not shown). A method and machine for making the mould are also described (see Division B3).
Patent GB-402724-A (GB)
Title: Covering for the working surfaces of pointing, peeling or brushing machines
IPC: B02B3/10
Filed: 1932-02-27
Abstract: 402,724. Hulling, husking, and decorticating. BUNSE, F., Hesperinghausen, near Niedermarsberg, Westphalia, Germany. Feb. 27, 1932, No. 5930. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 1, 1932]. [Class 58.] The abrading surface of a machine for pointing, peeling, or brushing grain, is formed of bristles for example of piassaba, steel wire or similar materials, these bristles being compressed so that their points form a hard and yet yieldable surface. The bristles 5 are pressed together near their ends by the adjustable clamping bars 6, 7. Disc or cylindrical brushes may be similarly arranged.
Patent GB-548671-A (GB)
Title: Improvements in and relating to elevating apparatus
IPC: B64F1/22
Filed: 1941-05-08
Abstract: 548,671. Portable fluid-pressure hoists. BROMILOW & EDWARDS, Ltd., and SWIFT, H. W. May 8, 1941, No. 5977. [Class 78 (iii)] Hoisting apparatus for use with aircraft and for other purposes comprises a gang of wheeled trolleys 1 each provided with a vertical ram cylinder 2, a self-contained hydraulic system on each trolley and unitary control means, which may be remote from the trolley, adapted to operate the systems to raise and lower the rams either together or independently of each other. When used for lifting aircraft three trolleys may be used as shown in Fig. 4, all being controlled from a remote point, as by means of control buttons 36, 39 mounted on a body harness 35 and connected to a general control unit 40 on one of the trolleys. In the construction shown in Figs. 1 and 2 the trolley is mounted on three castor wheels 9 and its ram cylinder is provided with three stays 7. The ram or piston is preferably telescopic and is formed with a ball-head 20 to engage a suitable socket on the underside of one of the aeroplane wings. A trolley for lifting the tail of the aircraft has its ram provided with a pivoted fork member instead of a ball to engage the tail. Each trolley has a petrol engine or electric motor 14 driving a pump 18 connected to a tank 19 and the ram cylinder 2. Hand-operated screwjacks 27, 28 are provided on each trolley to take the weight off the castor wheels and prevent accidental moving of the trolley. The portable switchboard 35 has independent switches 36, 37, 38 for each of the three hoists and a master switch 39 for simultaneously controlling all three motors. It may also have means for controlling the lowering valves of the hoists. in the case of the trolley having a petrol-engine or other source of power a common hydraulic system may be used connected by fluid-pressure pipe lines to the cylinders of the other trolleys in the gang.
Patent GB-287162-A (GB)
Title: Improvements in method of and machine for welding
IPC: B23K11/00
Filed: 1928-02-27
Abstract: 287,162. Budd Manufacturing Co., E. G., (Assignees of Meadowcroft, J. lV.). March 18, 1927, [Convention date]. Welding.-The two adjacent sheets of three or more overlapped sheets are spot welded by connecting one of the sheets to be welded to one side of the welding circuit independently of the other sheets and completing the circuit through a localized pressure contact with the other sheet to be welded. In welding the inturned flange 42 of the outer panel of an automobile door to the overlap flange of a door rail 40 without leaving a mark on the outer side of the panel, one electrode consists of a copper plate 21 which is secured by clamps 31, 32 to the door rail and is connected by a plate 22 and swivel sleeve 23 to the lead 24 from one of the terminals of the secondary of a transformer 6 having a recording voltage of 18. The other electrode 18, which is connected by a lead 15 to the other terminal of the transformer is secured by bars 16, 17 to a plunger 10 reciprocated in a cylinder 9 on the arm 3 by a weighted hand lever provided with a switch 14 for controlling the primary circuit. The electrode 21 is suspended by a clamp and counterweighted cable attached to the lead 24 and is swung round for welding purposes so that the parts to be welded rest on a support 38 which is carried by a pivoted yoke 37 on the end of a rod 36 slidable and angularly adjustable in a hollow member 34 to which it may be secured by a set-screw 35. The support 38 is made of copper so as to conduct heat away from the lower surface of the panel and may also be water cooled, as are also the electrodes 18, 21. The electrode 21 may be clamped to a lock panel welded to the rear edge of the door rail.
Patent GB-1083444-A (GB)
Title: Apparatus for use in assembling small mechanisms
IPC: G04D1/00
Filed: 1966-02-11
Abstract: 1,083,444. Conveyers. SOCIETE ANONYME DE LA FABRIQUE D'HORLOGERIE LE COULTRE ET CIE. Feb. 11, 1966 [June 30, 1965], No. 6245/66. Heading B8A. [Also in Division B4] The step-by-step conveyer described in Specification 1,083,442 is modified by being formed with at least one longer compartment 5 which is divided into sub-compartments 7, 8 and 9.
Patent GB-525664-A (GB)
Title: Improvements in or relating to fuel injection apparatus for internal combustion engines
IPC: F02D1/00
Filed: 1939-02-25
Abstract: 525,664. Fuel-injection apparatus. BOSCH GES., R. Feb. 25, 1939, No. 6256. Convention date, March 30, 1938. [Class 102 (i)] [Also in Group XXIX] A feed pump 2 supplies a fuel injection pump 1 through the pipe 6. The pump pistons 24 have control edges 33, 27 controlling the closing and opening of the byepass port 20a which together with the suction port 20 leads to a space 19 which is connected to a cylinder 10. The cylinder 10 has a spring-loaded piston 11 connected to a coupling 42 which varies the phase relationship between the pump 1 and its driving shaft 43. The fuel supplied to the cylinder 10 leaks past the piston 11 through a passage 16 of variable cross section in the cylinder or sleeve in the cylinder. Upon alteration of the quantity delivered by the pump 1, the edge 33 causes an adjustment of the time of injection as determined by the coupling 42. The Specification as open to inspection under Sect. 91 states also that the passage 16 may be of uniform section and the piston loaded by several springs. This subject-matter does not appear in the Specification as accepted.
Patent GB-1160341-A (GB)
Title: Sealed switches or contact units.
Inventor: BONGARD JAMES ANTHONY
IPC: H01H51/28
Filed: 1967-02-09
Abstract: 1,160,341. Magnetic contact devices. BROOKHIRST IGRANIC Ltd. 9 Feb., 1967 [17 Feb., 1966], No. 6301/67. Heading H1N. A sealed magnetic contact unit has a magnetic member 16 extending from a sealed-in terminal 12 to co-operate with an armature 26 mounted by a rivet 24 on a contact spring 20 secured to the other terminal 14. The single point mounting of the armature gives a " semifloating " support. The end of the silver magnesium-nickel alloy spring 20 co-operates with a silver alloy contact 18 on the member 16. The spring 20 is prestressed to urge its end against an indented stop 10B in the envelope 10. Hard metal inserts 16A, 26A in the member 16 and armature 20 engage to form a primary contact conductor. The inserts may be tungsten carbide, zirconium nitride, titanium boride, molybdenum silicide or other carbides, nitrides, borides and silicates of transition metals of the fourth, fifth and sixth groups of the periodic table. A second terminal at the fixed contact end may carry a contact spring which is normally engaged by the free end of the movable contact spring (Figs. 7 and 8, not shown).
Patent GB-1038092-A (GB)
Title: Improvements in or relating to formable fibrous web material
Inventor: BALL FRANK JERVEY
IPC: B29B13/00
Filed: 1963-02-15
Abstract: 1,038,092. Laminates. WEST VIRGINIA PULP & PAPER CO. Feb. 15, 1963, No. 6320/63. Heading B5N. Fibrous sheet-materials impregnated and/or laminated with a solution of an A-stage resole and alkali lignin in ratios of 10: 1 to 1: 6 are cured at 200-350‹ F., the temperature is reduced below 200‹ F. to terminate curing and the product, which is postformable above 200‹ F., is subjected to mechanical deformation while heated above that temperature. Fibrous materials include paper, cotton and other cellulose fibres, synthetic and other organic fibres, mineral fibres such as glass, rock wool and slag wool, and woven and unwoven fabrics thereof. Resoles include condensation products of formaldehyde, chloral, benzaldehyde and other aldehydes with phenol, cresol, xylenol, p-tert.- butyl phenol, p-phenyl phenol, bisphenol and resorcinol.
Patent GB-152567-A (GB)
Title: Apparatus for shaping blanks for drawing into lens front tubing
IPC: C03B19/00
Filed: 1920-03-02
Abstract: 152,567. Haddan, A. J. H., (Corning Glass Works). March 2, 1920. Forming thermometers. - The blanks from which lens fronted thermometers are drawn are shaped in a mould having pivoted sides 10 the inclination of which can be varied by a screw 11. The gap G between the mould faces 10 avoids damage to the lens front by contact with the mould and allows the operator to ascertain that the bore B is in focus with the lens.
Patent GB-525717-A (GB)
Title: Improvements in and relating to calculating devices for use in the tensile testing of materials
IPC: G01N3/06
Filed: 1939-02-27
Abstract: 525,717. Calculating-apparatus. RESEARCH ASSOCIATION OF BRITISH RUBBER, MANUFACTURERS. HART. H. R., PORRITT, H. M., HENDERSON, C., [Representatives of PORRITT, B. D.], and NEWTON, R. G. Feb. 27, 1939, No. 6398. [Class 106 (i)] A slide rule for use in conjunction with machines for testing the tensile stresses in materials, especially rubber, comprises two relatively movable members upon which are marked logarithmic scales relating to the quantities load, stresses, and cross-sectional area of the test pieces together with one or more reference marks. The load scales and stress scales are placed on different members as are also the cross-section scale and the reference marks. In the embodiment shown in Fig. 1, for use in testing vulcanized rubber in machines with ring or dumb-bell shaped specimens the load scales B, and C as well as the dumb-bell thickness scale are marked on the slide while the stress scales A, and D for small and large pendulum weights as well as the reference marks Y and Z and the ring reference mark R are arranged on the stock of the rule. The relative positions of the scales is determined from an arbitrary reference line X. A supplementary thickness scale G, Fig. 2, is arranged on the reverse side of the slide and co-operates with a reference mark on a window W. This side is also provided with scales E and F for use in tests on ring specimens.
Patent GB-820659-A (GB)
Title: Improvements relating to the sulphonation of phenols
Inventor: DAVIDSON BRIAN KAY
IPC: C07C303/06
Filed: 1957-02-26
Abstract: Phenol sulphonic acids or sulphones are prepared by treating liquid or low-melting solid phenols with the stoichiometric quantity of liquid sulphur trioxide.  Liquid or solid, mono- or di-hydric, substituted or unsubstituted phenols may be treated, the solid phenols melting up to 115 DEG  C.  Mixtures of phenols having a mixed m.p. up to 115 DEG  C. may also be used. Mono-sulphonic acids are prepared using 1 mol. liquid SO3 and keeping the temperature above the m.p. of the phenol; di-and tri-sulphonic acids are prepared using 2 or 3 mols. liquid SO3 and allowing the temperature to rise during the addition and maintaining the raised temperature for a further period, and sulphones are prepared by adding 1/2 mol. liquid SO3 at 40-50 DEG  C., or slightly above the m.p. in the case of solid phenols and then heating at 160-80 DEG  C., or the b.p. of the phenol if this is lower, for 2-6 hours.  In the examples, phenol mono-, di- and tri-sulphonic acid, sulphonic acids of o-cresol, guaiacol, o-chlorophenol, resorcinol and cresylic acid and sulphones of 1,3-xylen-2-ol, phenol and o-cresol are prepared.
Patent GB-966881-A (GB)
Title: Improvements in or relating to electric lamps
IPC: H01K1/66
Filed: 1961-02-22
Abstract: 966,881. Lamp caps and holders. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 22, 1961 [Feb. 25, 1960], No. 6492/61. Heading H2E. A lamp bulb is provided with an Edison-screw cap by forming the neck 2 with a screw-thread 5, to receive a similarly threaded metal envelope 10, one of the current supply wires 8 connected to 10 being extended in the form of a safety fuse through the space between the end 3 of the lamp neck and the insulating base 13 of the cap, an insulating ring 15 filling up the said space and clamping the wire 8 on to the end 3 of the lamp neck. Due to the large support area provided by the lamp neck the maximum thickness of the metal envelope 10 may be 0.17 mm. (0.0067 inch). The ring 15 may consist of cement, silicon resin or a sponge plastic material.
Patent GB-694848-A (GB)
Title: Improvements in light sensitive silver halide emulsions for use in half tone photographic processes
IPC: G03F5/00
Filed: 1952-03-13
Abstract: 694,848. Half-tone photography. KODAK, Ltd. March 13, 1952 [March 21, 1951], No. 6495/52. Drawings to Specification. Class 98 (ii). A pre-screened silver halide emulsion layer for production of half-tone images on camera exposure or by printing from a continuous tone record has a half-tone pattern of Albert reversal dot areas; and in the present invention is produced by giving a heavy exposure to an emulsion layer through a line or contact screen and then treating the layer with a bleach bath which is a non-solvent for silver halide, such as dilute nitric acid. Preferably the exposure is such as to produce optimum Albert reversal at the centres of the areas so exposed and threshold Albert reversal at the corners and thereby an emulsion layer, after bleach treatment, with ultimate latent graded dots of maximum sensitivity at the centres and minimum sensitivity at the corners. Flow diagrams and graphs (not shown) demonstrate the Albert effect and its application to the invention. Starting with an emulsion of maximum gamma greater than 4 the emulsion of the invention should have dot centres of maximum gamma also greater than 4 and corners of maximum gamma greater than 2, with sensitivity at the corners less than one-fifth of that at the centres. As example a standard high contrast graphic art film is exposed through a magenta contact half-tone screen (133 lines per inch) to an R2 photoflood lamp at two feet per two minutes and then immersed in a weak solution of potassium bromide with either potassium ferricyanide or copper sulphate for one minute, washed and dried. The film is then ready for use. Reference is made for Albert reversal to " The Theory of the Photographic Process " by C. E. K. Mees, 1949, at pages 294-297.
Patent GB-1496427-A (GB)
Title: Beta-ketoisocyanates and the isomeric 1,3-oxazines
IPC: C07D265/06
Filed: 1975-02-17
Abstract: 1496427 #-Ketoisocyanates and isomeric 1,3- oxazines thereof BAYER AG 17 Feb 1975 [23 Feb 1974 16 Nov 1974] 6541/75 Heading C2C Compounds of the formula  or an isomeric 1,3-oxazine corresponding to the tautomeric formulµ wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are the same or different and each represents hydrogen, an optionally substituted alkyl or cycloalkyl radical with up to 6 carbon atoms or an optionally substituted aryl radical, and R<SP>4</SP> represents an optionally substituted alkyl or cycloalkyl radical with up to 6 carbon atoms, or an optionally substituted aryl radical, and in which R<SP>1</SP> and R<SP>2</SP> and/or R<SP>3</SP> and R<SP>4</SP>, and/or R<SP>1</SP> or R<SP>2</SP> and R<SP>4</SP>, together with the carbon atoms substituted by them, may also form a carbocyclic ring, provided that R 3  and R 4  do not complete a benzene ring, may be obtained by reacting phosgene with a #-ketoamine of the formula In one embodiment the #-ketoamines, or salts thereof may be reacted with phosgene in an inert solvent at 100-200‹ C. and the 1,3-oxazines obtained may be converted to the isomeric #- ketoisocyanates by pyrolysis, preferably under a reduced pressure at 120-300‹ C. In another embodiment, the #-ketoamines may be reacted with phosgene in the presence of a base at -30‹ to +35‹ C., and the #-ketoisocyanate product may be cyclized in the presence of catalytic quantities of acid, preferably at elevated temperature in a solvent to form the 1,3- oxazine; the reaction may also be carried out in a two-phase system of water and an inert water-immiscible solvent with the pH of the aqueous phase being adjusted to 7 on completion of the reaction. The products possess plant-growth regulant properties.
Patent GB-436207-A (GB)
Title: Electro-acoustic keyboard stringed instruments
IPC: G10H3/18
Filed: 1934-03-01
Abstract: 436,207. Electrical musical instruments. FORSTER, F. A. G., 12, Jahnstrasse, L÷bau, Saxony, Germany. March 1, 1934, No. 6558. [Class 88 (ii)] In an electroacoustic grand or other piano, wherein hammerproduced string- vibrations are rendered audible by electrical pickups, amplifiers and loudspeakers, electrical apparatus, such as stop-switches 20, volume-control, coils 19 and amplifier 21, is contained in a screened chamber 13, accessibly arranged between the front wall 12 and the tuning-key bar 7 of the string-frame. Stop-keys 22 may be under the folding lid 10 of the keyboard, as shown, or above it, in which latter case the lid folds under the chamber 13, which is shallower than that shown.