baber/WOPTO huggingface dataset:
Patent GB-971852-A (GB)
Title: Hybrid strapdown inertial navigation system
IPC: G01C21/16
Filed: 1963-04-18
Abstract: 971,852. Navigation systems. GENERAL PRECISION Inc. April 18, 1963 [May 15, 1962], No. 15346/63. Heading G1C. An inertial navigation system comprises a platform 11 having a heading axis, a crossheading axis and a Z-axis mutually perpendicular to each other, means stabilizing the platform only about the heading and crossheading axes, first and second accelerometers 51, 59 mounted on the platform to produce output signals representing the accelerations of the platform along the heading axis, and the crossheading axis respectively, an angular rate gyro 67 also mounted on the platform to produce an output signal representing the rate of angular rotation of the platform about the Z axis, and a computer 21 connected to perform mathematical operations on the output signals to provide navigational information. The platform 11 is pivotally mounted on a gimbal 16 by means of an axle 18 which is aligned with the crossheading axis. The gimbal 16 is pivotally mounted on an axle 20 with respect to the frame 17 of a vehicle in which the system is mounted. The axle 20 is aligned with the heading axis. A heading axis gyro 15 and a crossheading axis gyro 13 are also mounted on the platform 11 to maintain the alignment of the Z -axis. If the platform starts to pivot about the heading axis, the gyro 15 generates a signal which is amplified by an-amplifier 26 and fed to a torquer 24 which restores the platform to its original position. Similarly movement of the platform about the crossheading axis is controlled by the gyro 13 by way of an amplifier 28 and torquer 22. The output signals from the accelerometers 51, 59 and the angular rate gyro 67 are fed to the computer 21 which provides the desired navigational data i.e. the latitude and longitude of the vehicle. The Z axis is maintained aligned by Schuler tuning, the computer feeding back signals to the gyros 13, 15 causing them to pivot to maintain the Z axis aligned with the vertical. This feed back may be dispensed with where information is only required over relatively small areas of the earth's surface. Suitable forms of computer for use with the invention are described in block diagram form in the Specification allowance being made for the rate of rotation of the earth.
Patent GB-315693-A (GB)
Title: An arrangement of laminated iron shells for current-carrying coils for induction furnaces
IPC: H05B6/36
Filed: 1929-05-16
Abstract: 315,693. Allmõnna Svenska Elektriska Aktiebolaget. July 16, 1928, [Convention date]. Induction furnaces.-The straight portions of the substantially rectangular coil 1, the magnetic circuit of which is only partially closed through iron, are embraced by an iron shell 2 having crosswise laminations, and packets of sheet iron 4 having longitudinal laminations are arranged adjacent the rounded ends of the coil. In Figs. 4 and 6 the longitudinal laminations form a shell 5 embracing the ends of the coil and in contact with the 'shell 2 in a plane parallel to the plane of the coil. In a modification thereof, Fig. 7, parts of the shell 5 are arranged in slots in the shell 2 in contact with the underside of the coil.
Patent GB-1038842-A (GB)
Title: A method for producing shaped articles
IPC: C08G69/10
Filed: 1964-04-14
Abstract: DL - Alanine - N - carboxylic acid anhydride (4 - methyl - 1,3 - oxazolo - 2,5 - dione) is made by passing phosgene through a solution of DL-alanine in tetrahydrofuran at 48 DEG  C. while stirring and preventing contact with moisture. After removal of excess phosgene by passing in dry air, and distilling off the tetrahydrofuran, the crude product is recrystallized from ether containing 10% v/v dichloroethane.  1,1,2,2-Tetrachloroethane is purified by treatment with concentrated sulphuric acid, followed by washing with dilute alkali, drying with anhydrous potassium carbonate and fractionation under reduced pressure in presence of toluene.  The product is stabilized by the addition of toluene and a molecular sieve and is stored in a brown bottle.  The product may subsequently be further purified by shaking with silver nitrate solution.
Patent GB-778884-A (GB)
Title: Improvements in and relating to valves
IPC: F04B53/10
Filed: 1955-05-27
Abstract: 778,884. Springs and vibration dampers. ANCIENS ETABLISSEMENTS BRISSONNEAU ET LOTZ. May 27, 1955 [May 31, 1954; May 11, 1955], No. 15421/55. Class 108(3). [Also in Group XXIX] The member A of a fluid actuated valve (see Group XXIX) is fixed to a stem 7 on which an element B is slidable whilst between the latter and the abutment 11, formed by outer end of the housing, is a spring D, and between the member A and element B is a layer 13 of plastic material, such as polytetrafluorethylene, and a spring 14 ; a further spring and element may be located around the stem. The arrangement is such that during valve opening and closing the member A only experiences a few damped oscillations. In a modification, the element B<SP>1</SP>, Fig. 5, which is capable of elastic deformation and may comprise a number of separate discs, coacts with two resilient devices C<SP>1</SP> and D<SP>1</SP> of plastic material, such as polytetrafluorethylene or a silicon elastomer, the lower device C<SP>1</SP> having an upper concave face whilst the lower face of the upper device D<SP>1</SP> is of complementary configuration. The device C<SP>1</SP> serves to rapidly damp the valve oscillation and the compression wave in the closure member A<SP>1</SP> upon its impact with the seat 6a. The device D<SP>1</SP> may be replaced by a spring. In another modification, the closure member A<SP>2</SP>, Fig. 8, is of annular form and the upper resilient device comprises a corrugated spring D<SP>2</SP> whilst the lower device C2 consists of an annular plastic envelope 19 against the top and bottom internal surfaces of which bears a corrugated spring 20, plates 21 and 22 being interposed therebetween ; the spring 20 incorporates orifices 23 to permit of the chambers formed on either side of the spring to communicate therethrough, which chambers are filled with a gas or compressible liquid, such as air or silicon, or an incompressible liquid. The size of the orifices is selected according to the degree of damping iequired. The spring 20 may be replaced by helical springs. In a further modification, the element B<SP>3</SP>, Fig. 9, is also formed with arcuate slots 25 therein. The upper and lower resilient devices D<SP>3</SP> and C3 consist of spring discs 26 and 27, respectively, with lugs 28 and 29, which are obtained by a slitting and pressing operation, that contact the element B<SP>3</SP> and function as secondary springs. The device C<SP>3</SP> may be encased in a plastic envelope whilst each device incorporates apertures 31 and 37. The springs may consist of helical windings or corrugated discs encased in plastic or comprise a core of strip plastic with a layer of steel or other metal on each side. In each of the foregoing embodiments the element may be wholly or partly encased in plastic and the upper device or spring and element may be dispensed with.
Patent GB-701788-A (GB)
Title: Improvements in loom harness
Inventor: KAUFMANN JOHN J
IPC: D03C9/06
Filed: 1950-06-20
Abstract: 701,788. Heald frames. STEEL HEDDLE MANUFACTURING CO. June 20, 1950, No. 15425/50. Class 142(2) The inner and outer edges of the top and bottom rails 10 of a heald frame are reinforced by strips 15 of aluminium or magnesium alloy. A groove extending from end to end of each strip engages a complementary projection on the rail. The strip is secured to the rail by screws or by an adhesive. The strip is also provided with a groove 19 which centres a drill when drilling holes for the screws and for lifting and lowering hooks and for the hooks carrying the heald support rods..
Patent GB-890630-A (GB)
Title: Improvements in or relating to clutch releasing means in or for tractors
Inventor: THOMPSON JOHN
IPC: A01B67/00
Filed: 1957-05-16
Abstract: 890,630. Controlling clutches. GRAY, E. T. Y. May 13, 1958 [May 16, 1957], No. 15523/57. Class 80 (2). [Also in Group XXXI] When a ground-engaging implement drawn by a tractor strikes an obstacle, the top link 19A of the three-point hitch system between the implement and the tractor pulls a Bowden cable 18 to pivot a catch 17 so that it releases a pin 16 on a bell-crank lever 8 carried on the tractor gear-box 1, a compressed spring 14 abutting a stop 11 and surrounding a sliding rod 10 fast with a U-shaped connector 9 pivoted to the bell-crank lever acting to turn the latter and its supporting shaft 3A anticlockwise, thereby forcing a telescopic strut 5 downwards to depress the usual pedal 7 and disengage the tractor clutch. Under normal driving conditions, the telescopic strut 5 allows the clutch pedal 7 to be depressed without release of the catch 17. A resetting lever, Fig. 2 (not shown), fast with the shaft 3A and the bell-crank lever 8, is turned to re-engage the catch 17. As a modification, the compressed spring 14 may be replaced by an arrangement using a tensioned spring.
Patent GB-1470088-A (GB)
Title: Soil working implements
IPC: A01B33/02
Filed: 1974-04-08
Abstract: 1470088 Soil working implements C VAN DER LELY NV 8 April 1974 [12 April 1973] 15546/74 Heading A1B A polygonal soil working rotor 18 of solid or tubular form is provided behind a bladed soil working rotor 6 which works soil at a lesser depth than the polygonal rotor 18. The rotor 18 comprises a central polygonal support 20 on which may be received plates 19 and spacers 21. The rotor 18 is journalled in arms 12, 13 which are pivoted at 10, 11 to the side plates 3 of the implement so that the rotor 18 can occupy one of three working positions of different depths or a transparent position. The rotors 6, 18 are rotated in the same direction by means of chains 51, 42, 46 driven via a shaft 36 from a gearbox 35 connected to a tractor .power-take-off. The rotor 6 comprises a central support 7 to which are rigidly secured circular plates 8 carrying blades 9 angularly staggered from plate to plate so as to extend in three helical rows along the support 7. A ground roller 33 is disposed close to the periphery of the rotor 6, for flattening plants. Tines 31 on a hood 25 deposit clods, stones and roots in the hole made by the rotor 6. Adjustable coulters 57 cut grooves defining the working strip of the implement.
Patent GB-612292-A (GB)
Title: Improvements in apparatus for dispensing measured quantities of liquids
IPC: G01F11/06
Filed: 1946-05-23
Abstract: 612,292. Liquid - dispensing apparatus. SANDER, J. S., and ROOK, W. May 23, 1946, No. 15657. Addition to 516,855. [Class 102 (i)] A modification of the liquid-dispensing apparatus according to the parent Specification, in which the pump cylinder 10 is provided at its lower end with a detachable cover 11 having the suction pipe 12 rigidly secured thereto. The inlet valve 13 is seated upon the cylinder cover 11 and the fence 20 surmounting the valve is made integral with an annular disc 16, a packing ring 17 being mounted upon the rabbeted edge of the disc. The cover 11 is held to the bottom of the cylinder by a yoke 22, one end of which rests upon a collar or abutment 25 secured to the guide tube 26 whilst the other end has a slotted engagement with a screw-threaded member 28 fitted with a milled nut 30. The overflow port 39 is arranged adjacent the guide tube 26, a shield 40 being slidably supported between the tube and the exterior of the cylinder so that it can be adjusted to cover the port 39 and prevent outward splashing.
Patent GB-508335-A (GB)
Title: An improved manufacture of lubricating oil
Filed: 1938-05-25
Abstract: 508,335. Lubricants. ARNOLD, C. (Standard Oil' Development Co.) May 25, 1938, No. 15663. [Class 91] , A lubricant for extreme pressures or for cutting tools is made by reacting a high boiling organic compound containing an aliphatic chain with an inorganic substance selected from the following, sulphides, hydrosulphides or polysulphides of hydrogen, ammonia, alkali metals or alkaline earth metals. Preferably, an aliphatic hydrocarbon is reacted with a polysulphide to give an organic polysulphide. Alsoa chlorinated petroleum fraction may have all or part of its chlorine replaced by sulphur by treatment with one of the class of sulphides above mentioned. In the example, hard paraffin wax is chlorinated to contain about 25 per cent of chlorine by bubbling in chlorine gas. To 100 parts of the chlorinated product are added 72 parts of sodium polysulphide. The reaction mass is then taken up in 1000 parts of 98 per cent isopropyl alcohol. The mixture is refluxed for about 1¢ hours. The mass is then cooled and the alcohol distilled off. An oil of 1700 secs. Saybolt at 100‹ F. remains.
Patent GB-816697-A (GB)
Title: Method of transforming substituted amides of l-isolysergic and l-lysergic acids into equal derivatives of d-isolysergic and d-lysergic acids
Filed: 1957-05-17
Abstract: l(+) - Propanol- and (+) - butanol - amides-(2) of l-isolysergic and l-lysergic acids are transformed into the corresponding derivatives of d-isolysergic and d-lysergic acids by heating for 1 to 10 hours at 110-160 DEG  C. until the equilibrium state of diasteroisomers is reached, then separating the derivatives of either d-isolysergic or d-lysergic acid and repeatedly working up the remainder in the same way to an economic degree of exhaustion of the mixture of stereoisomers.  In an example the (+)-butanolamide-(2) of l-isolysergic acid is heated for 4 hours at 135-140 DEG  C. in the presence of benzylamine under an atmosphere of nitrogen.  The residue on treatment with dibenzoyl-d-tartaric acid gives the acid dibenzoyl-d-tartrate of (+)-butanolamide-(2) of d-isolysergic acid (methyl ergobasinine). The acid dibenzoyl-d-tartrate of (+)-butanolamide-(2) of l-isolytergic acid and a molecular compound of (+)-butanolamides-(2) of d- and l-lysergic acid are also isolated. Similar products are obtained using the (+)-butanolamide-(2) of l-lysergic acid in a medium of dl-2-aminobutanol-(1).  In further examples, the acid dibenzoyl-d-tartrate of methyl ergobasinine, prepared from its l-isomer by the process of the invention, is converted into the free base which in turn may be epimerized to methyl ergobasine, and ergobasinine is similarly obtained from l(+)-propanolamide-(2) of l-isolysergic acid.
Patent GB-442710-A (GB)
Title: Improvements in electric cable connectors and enclosure casings therefor
IPC: H02G3/16
Filed: 1935-05-30
Abstract: 442,710. Wire couplings; junction boxes. HOPE, V., Upton Hall, Macclesfield. May 30, 1935, No. 15699. [Class 38 (i)] A connector for use with a looped-in neutral cable and the neutral wires of an installation, comprises a triple cable socket a<1>, a<2>, a<3> formed by bending sheet metal 2, one end 4 of the sheet being located adjacent to the sockets. Clamping screws 6 are tapped into the double metal, and are arranged in the sockets a<1>, a<3> to grip two ends of a looped-in feeder at one side of the connector, and in all the sockets at the other side for the reception of three installation wires. A casing to house the connector comprises a base B with a boss 16 that enters a hole in the connector to locate it and shield it from contact with the fixing screw that passes through the boss 16 and through the cover 10 which is thus secured. Where two or more connectors are to be arranged in parallel in the same system an extension 4<1> on one of them lies between the parts 1, 4 of the other and may fit against either the part 1 or the part 4 as shown. Alternatively, a plain strip lying between the parts 1, 4 of both connectors may be used. The invention may be used with the systems described in Specifications 335,550, [Class 38 (i)], and 365,591.
Patent GB-1097408-A (GB)
Title: Diverter switch for transformers
IPC: H01H9/00
Filed: 1966-04-12
Abstract: 1,097,408. Mechanical switches. E. SCHEUBECK. April 12, 1966 [April 15, 1965], No. 15841/66. Heading H2B. An on-load tap changer diverter switch comprising main current-interrupting and auxiliary resistor-connecting contacts 3 co-operating with fixed contacts 2 is provided with a readily removable parallel main current-carrying contact assembly comprising rollers 16 and fixed contacts 25 such that the switch may be readily assembled with or without these contacts according to the proposed loading. The lower supporting spider 5 is provided with a threaded bore 14 for receiving a hub 19 to journel a shaft 15 engageable with the main shaft 11 by a dog coupling 17, 18. Shaft 15 carries a plate 24 connected by bolts 23 to a plate 22 rotatably mounted in a groove (20, Fig. 3, not shown) around hub 19. Contact rollers 16 are carried on cranked levers 21 secured to the plate 22 for respective cooperation with the spider 5 as star point and with the fixed contacts 25 electrically connected to main fixed contacts 2.
Patent GB-378568-A (GB)
Title: An improvement in fasteners for ladies' handbags
IPC: A45C13/06
Filed: 1931-05-30
Abstract: 378,568. Hand bags; sliding-clasp fasteners. WEBB, W. G., 25, Station Road, Shirehampton, Bristol. May 30, 1931, No. 15845. [Class 44.] To facilitate operation of a sliding clasp fastener on a frameless handbag the free end A of the stringers is connected by an extension piece with the sides or bottom of the bag. This extension may be in one piece secured by stitching, or as shown, may be in two pieces E<1>, E<2> stitched respectively to the stringers A and bottom of the bag and connected by a pressbutton fastener H.
Patent GB-165784-A (GB)
Title: Improvements in the process of treating wood
IPC: B27K5/00
Filed: 1921-06-09
Abstract: 165,784. Ammon, H. F. July 1, 1920, [Convention date]. Endless - band conveyers, articles carried by.-Wood is treated until it is brown throughout with hot air at 420-480‹ C. In the form of thin boards it is placed in hoppers a whence it is taken by a feed device operated by gear wheels b to a conveyer e passing through an oven f heated by means of external flues n. At the end of the travel, the boards fall into a discharging hopper h. The object of the process is to render woods more easily workable and is of special utility in preparing red cedar wood for pencil manufacture.
Patent GB-312280-A (GB)
Title: Manufacture of acetylated cellulose fibres
IPC: D06P1/651
Filed: 1929-05-23
Abstract: 312,280. Heberlein & Co. Akt.-Ges. May 23, 1928, [Convention date]. Right to Patent relinquished. Yarns and threads, treating with liquids. - Partly acetylated cellulose fibres which are immune to dyeing with substantive dyes are prepared by treating the fibre with a known acetylating mixture of glacial acetic acid, acetic anhydride and a catalyst, containing in addition formaldehyde, trioxymethylene or other polymer or derivative of formaldehyde or a compound which would furnish formaldehyde under the conditions of the reaction. The formaldehyde retards the weakening or dissolution of the threads, for example cotton, by the acetylating mixture without hindering acetylation. An example describes the treatment of cotton yarn with a mixture of glacial acetic acid, acetic anhydride, zinc chloride and paraformaldehyde. Specifications 7773/15, [Class 2 (ii), Cellulose &c.], and 280,493, are referred to.
Patent GB-1419319-A (GB)
Title: Electronic signal detection circuit sampling device
IPC: H04N9/45
Filed: 1973-04-04
Abstract: 1419319 Phase detectors RCA CORPORATION 4 April 1973 [10 April 1972] 16023/73 Heading H3A The output of a multiplier 31 is sampled and stored at C51 during only a portion of the cycle of an operating waveform. During the colour burst portion of a chroma signal waveform fed to the multiplier 31, which acts as a phase detector, the detector output across R42 is sampled by T49 and stored on C51. During the rest of the waveform (the colour subcarrier period) the chroma input is suppressed and the detector output sampled by T57 and stored at C59 to provide a reference voltage representing quiescent circuit conditions (thus allowing for noise, supply voltage variations, &c.). The difference between the two stored voltages controls a phase shifter 23 which pulls an oscillator circuit 21 feeding the detector 31 into lock with the received signal 1. In the detector 31, T33, T34 receive the pushpull burst signal from 32, and are disabled by T43, T44 during the rest of the signal by a keying signal B. T37 and T39 receive the oscillator signal to be multiplied with the burst signal, and T38, T40 receive bias voltage. Thus load R42 receives burst detection signal from T37 and quiescent current during the rest of the waveform from T40. The sampling circuits 46, 47 are similar, the burst sampling circuit comprising an emitter-coupled pair 52, 53 of which T53 is turned on by a keying signal A during the burst period (A=B), so that T49 can conduct. Then C51 can be charged by T49 from the R42 voltage, or discharged by T53, such that its voltage follows any changes in the R42 voltage. When T53 is off, during the non-burst part of the waveform, T52 conducts and holds T49 off, so that C51 has neither charge nor discharge paths.
Patent GB-164750-A (GB)
Title: Improvements in and relating to building upon building sites
IPC: E04H1/00
Filed: 1921-06-10
Abstract: 164,750. Hellingman, C. June, 16, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Foundations.-The sites for buildings, gardens, streets &c. instead of being filled in with sand &c., have erected on them cell-like constructions, which may protrude above the ground level, and be ventilated and lighted by glass gratings, and may be used as storage places, the buildings &c. being finally erected over these cell-like constructions.
Patent GB-584400-A (GB)
Title: Improvements in or relating to balers
IPC: A01F15/08
Filed: 1944-08-23
Abstract: 584,400. Sheafing &c. apparatus. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. (International Harvester Co.). Aug. 23, 1944, No. 16081. [Class 6 (iii)] [Also in Group XVII] A baler for crop material has a longitudinal hollow body wherein there is a baler chamber including a reciprocatory plunger, the driving means for the plunger being supported within the body and comprising a first longitudinal drive shaft, a second longitudinal shaft geared thereto, a transverse shaft and crank structure, geared to the second shaft and a connecting-rod between the transverse shaft and crank structure and the plunger. As described, the baler is drawn by a tractor and is adapted to pick up crop material, such as hay, by means of a pick-up device 21 which deposits .the hay on a cross conveyer, the latter feeding a packer 18 which feeds the hay through a side opening in a baler chamber 17. The hay is compressed by a plunger 16, and then tied by means of a binder device which includes a needle 25 and twine holder 26. The baler body 10 is an enclosed structure generally rectangular in cross section, disposed longitudinally, with a hitch-frame 14 and a drive shaft 30 at the front end arranged for connection to the tractor. The plunger 16 is operated by a crank which is driven through reduction gearing from the shaft 30 comprising spur gears 41, 42 and bevel gears 51,52. The shaft 30 is hollowed out to receive the splined end of a shaft 33 to which is secured the gear 41 and a balanced flywheel 36. The gears 42 and 51 are secured to a shaft 43, and the gear 52 is splined to a transverse shaft 53 which is welded to a fabricated hollow crank arm 59. A similar crank arm 62 welded to a sleeve 63 which is welded to a stub shaft 64 coaxial with the shaft 53 is, like the crank arm 59, welded to a transverse sleeve 61 to which one end of a hollow fabricated connecting-rod 69 is pivotally connected by a bearing 68, the other end of the rod 69 being pivotally connected to the plunger 16. The packer 18 is driven through a crank 19, universal joint 80, shaft 79, a further universal joint. and a shaft 73 which has secured thereto a bevel gear 72 mating with a bevel gear 71 secured on an extension of the shaft 53. The gearing is enclosed, as shown, to exclude dirt. All the driving mechanism with the exception of the drive 71, 72 is enclosed within the baler body 10.