baber/WOPTO huggingface dataset:
Patent GB-585069-A (GB)
Title: Improvements in lever linkage for the transmission of power
IPC: G05G9/08
Filed: 1944-11-08
Abstract: 585,069. Linkwork. BATEMAN, J. R. Nov. 8, 1944, No. 21994. [Class 80 (iii)] [Also in Group XXII] A mechanism for operating, for example, the movable electrode platen d<2> of a welding machine, is so constructed that towards the end of the operative stroke the pressure applied to the platen is greater than that during the first part of the stroke. The lever k, k<1> is attached to the pedal e by a link f and spring g and has pivoted to it at n a second lever m, m<1> with depending arms o at its other end which are pivoted to the fixed standard b at p. Pivoted on the second lever at r is a rocking lever q the upper end of which contacts a locking pin s slidably mounted in an apertured boss s<1> on the lever m, m' and linked by shackle t and spring u to a boss v formed for the pivot n. The lever q carries at its lower end a thrust bolt w, encircled by a spring x, the cam head y of the bolt co-operating with a fixed plate z carried by standard b. The end of the lever k, k' carries a boss 2 having an aperture 3 to receive the pin s. When the pedal e is depressed the lever k, k<1> which carries a thrust rod c to operate the platen, first pivots about the point n until it comes into contact with the lever m, m<1>. The two levers then move together about the pivot p of the arms o and the lever q is moved against spring u as in Fig. 4 to move the pin s, into the bore of the boss 2 on lever k, k' to lock the levers k, k<1> and m, m<1> together during the latter part of the stroke. A weight (not shown) returns the lever k, k' and pedal e to their original positions. In a modification the pin s is urged into the boss 2 by a solenoid 4, Fig. 5, which is actuated when the lever k, k' operates a contact switch 5 on the second lever m, m' the solenoid being de-energized, after the welding current has been cut off, by a timing device such as described in Specification 550,615, [Group XXXV]. In a further modification, an electromagnet actuated by a contact switch is energized to hold the two levers together without need of a locking pin.
Patent GB-1380016-A (GB)
Title: Mannich bases a process for their preparation and their use in  the production of polyurethanes
IPC: C07C239/00
Filed: 1973-05-09
Abstract: 1380016 Mannich bases BAYER AG 9 May 1973 [13 May 1972 9 June 1972 23 June 1972] 22022/73 Heading C2C [Also in Division C3] New Mannich bases, useful in polyurethane manufacture (see Division C3), have the formula wherein A is a group of formula or B is a hydrogen atom, a C 1-6  alkyl group or a group of formula  and R 1  and R 2  are C 1-12  alkyl groups or a -(CH 2 ) x -OH group, x is 2-8, y is 1-7 and z is 1-6. The Mannich bases are prepared by reacting (1) an amine of formula R 1 .R 2 .NH, (2) formaldehyde and (3) a compound of formula Q-CO-NH-T in which Q is either the group A or a group which on reaction with the imine will produce the group A and T is either the group B or a group which on reaction with the amine will produce the group B. Thus the group Q may be a vinyl group as in acrylamide which will react to form the group
Patent GB-1510723-A (GB)
Title: Control circuit for gas turbine engine
IPC: F02C9/28
Filed: 1975-05-22
Abstract: 1510723 Automatic control of speed NISSAN MOTOR CO Ltd 22 May 1975 [13 June 1974] 22108/75 Heading G3R A control system for the fuel supply of a gas turbine engine having a flow control valve controlled in response to the difference between the measured speed of the turbine and a desired speed includes an arrangement for substituting the desired speed signal by a reference signal which is dependent on the engine temperature when an excessive difference is detected between the desired speed and actual speed. In the system shown under steady state conditions the speed measured by sensor 22 is compared in comparator 26 with a desired speed Vs set by generator 20 to provide an output Vd which is used to control the valve 16. The desired speed valve Vs and the sensor output Ve are applied together with a temperature dependent reference signal Va to a computing circuit 64 which produced an output if a demanded speed change would give excessive temperatures. The signal Va is derived from a comparison in comparator 48 of the output of temperature sensor 60 and a signal derived from the measured speed in accordance with the engine characteristic stored in function generator 56, Fig.4 (not shown). The computing circuit output causes switch 34 to operate and apply the signal Va as a speed reference and also to open switch 52 so that integrator 66 becomes effective to integrate the signal Va before it is compared with the actual speed signal Ve in comparator 26. The input and output voltages of circuit 66 can be made approximately equal when switch 52 is closed by suitable choice of components.
Patent GB-1471029-A (GB)
Title: Pressure control valves
IPC: B60T17/18
Filed: 1974-05-17
Abstract: 1471029 Proportioning valves GIRLING Ltd 8 May 1975 [17 May 1974] 22120/74 Heading F2F A proportioning valve for providing full rear wheel braking on failure of a separate front wheel braking circuit comprises a control member 7 with a valve element 8, between inlet and outlet parts 2, 3 for a rear brake circuit, urged to the open position by a spring 9 and having an extension 13, which passes through a seal 14 into a vented chamber 15 and engages a member 16 responsive to the pressure of parts 17, 18 for the front circuit to displace the member 7 and close the valve 8/12. A first modification of the valve (Fig. 2, not shown), includes a member (70) responsive to a difference in the two inlet port pressures to actuate a warning device and in a second modification (Fig. 3, not shown), the annular valve elements 8, 12 are replaced by an axial valve member (22) co-operating with an axial bore in the member 7.
Patent GB-336955-A (GB)
Title: Improvements in grips for tractor wheels
IPC: B60B15/00
Filed: 1929-07-18
Abstract: 336,955. McGregor, A. M. July 18, 1929. Tyres, non-elastic.- A gripping shoe for use on tractor wheels is shaped so that in entering the soil the grip tends to slide in a forward direction and, on rotation of the wheel, to compress the soil rearwardly of the grip and be withdrawn without substantial displacement or enclosure of the soil. In the construction shown, the grip is of triangular form, with two transversely-plain faces 16, 17, either of which may be clamped to the wheel rim by means of the bolt holes 18, said faces being connected by a curved web 5.
Patent GB-583639-A (GB)
Title: Improvements relating to ceramic dielectric materials and to methods of making the same
IPC: C04B35/465
Filed: 1944-11-10
Abstract: A ceramic composition having one or more of the characteristics of high dielectric constant, low power factor and a temperature co-efficient which increases or decreases regularly with rise of temperature, comprises a fired mixture of an alkaline earth metal titanate and an alkaline earth metal stannate.  Examples are given of compositions of CaTio3, SrTiO3 or BaTiO3 with BaSnO3, SrSnO3 or CaSnO3 and also complex compositions of BaTiO3 BaSnO3, SrSnO3 and of BaTiO3, SrTiO3, BaSnO3, SrSnO3.  In all cases the ingredients are sintered and ground to pass a 325 mesh/inch screen, dried and mixed. Approximately 10 per cent. water based on the weight of the dry powder is added and the damp powder passed through a 20 mesh/inch screen and then pressed into discs in a die under 5-10 tons/sq. inch pressure and air dried for 24 hours.
Patent GB-1022681-A (GB)
Title: Improvements in or relating to devitrified glass-ceramics and their production
Inventor: MCMILLAN PETER WILLIAM
IPC: C03C10/00
Filed: 1961-06-20
Abstract: Glass-ceramic articles are formed from a glass having as major constituents, at least 90% by weight, SiO2 45 to 82; Al2O3 10 to 36; Li2 0 to 25; MgO 0 to 32 with optional minor constituents consisting of Na2O and/or K2O 0 to 5; ZnO 0 to 10; CaO 0 to 5; B2O3 0 to 10 with, as nucleating agent, an oxide of tungsten and/or an oxide of molybdenum or a metallic phosphate together with an oxide from the oxides of tungsten and/or molybdenum and/or vanadium and/or titanium, the glass article being heat-treated by raising its temperature progressively in a single stage to a temperature at which devitrification takes place so as to form a predominantly micro-crystalline glass-ceramic material. Specific examples are given.
Patent GB-666537-A (GB)
Title: Mounting of the stator blades of a gaseous fluid turbine
Inventor: RAINBOW HORACE SINCLAIR
IPC: F01D9/04
Filed: 1949-08-27
Abstract: 666,537. Turbines. ARMSTRONG SIDDELEY MOTORS, Ltd. June 22, 1950. [Aug. 27, 1949] No. 22327/49. Class 110(iii). Turbine stator blades are so mounted that their radially inner ends are free for radial outward withdrawal but are located in other directions, while the outer ends are secured to rhomboidal-shaped platforms 25 which are clamped between an inner liner 26, which has holes to receive the blades, and a stator member 27 of channel section. An annular chamber is formed between the stator member 27 and the external ring 44 from which cooling air flows through the interior of the hollow blades to the annular chamber 17 formed between the ring 13 which locates the radially inner ends of the blades, and the co-axial ring 16, the air discharging through holes 18 on to the roots of the first row of rotor blades 20. The rotor shroud ring 39 is bolted to the rearward flange of the stator member 27 and has toothed connection at 46 with the ring 44 which supports the exhaust cone 43. The shroud ring is counter-bored to receive the inner liner 26. An abutment ring 50 is interposed between the external ring 44 and the wall of the combustion system 32, the ring having a tang 51 which abuts against the rearward flange 29 of the stator member 27, the rearward flange having a slot therein to accommodate the tang 51 during dismantling. Specification 666,536 is referred to.
Patent GB-943494-A (GB)
Title: Improvements in or relating to power operated collet clutches
Inventor: DENNY DOUGLAS FRANK
IPC: B23B31/20
Filed: 1960-06-27
Abstract: 943,494. Chucks. F. BURNERD & CO. Ltd. June 26, 1961 [June 27, 1960], No. 22395/60. Heading B3B. In a chuck or the like a stationary piston 9 and a cylinder 8 are provided to cause relative axial movement of rotating members of the chuck. The cylinder 8 is connected by a split ring 10 to a sleeve 6 having wedging surfaces 14, 14a so that axial movement of the cylinder causes balls 12 to move a collet-actuating member 2 to close the collet. Operation may be by double-acting hydraulic or pneumatic means or have a spring return.
Patent GB-744424-A (GB)
Title: Improvements in the desizing of glass fibres and fabrics
Inventor: BROWN BRINDLEY JACK
IPC: C03C25/002
Filed: 1953-08-15
Abstract: The size or emulsion used in the preparation of glass or other mineral fibre yarns or fabrics is removed by first treating the material in an aqueous soap or detergent solution and then subjecting the material to a short heat-treatment at 200 DEG  to 290 DEG C.  The heat-treatment may be effected by passing the material continuously through an oven.  The detergent solution may be an aqueous solution containing a sulphated fatty alcohol or a nonionic detergent, a high boiling solvent and sodium carbonate. Between the treatments the material may be washed several times in boiling water, and dried.
Patent GB-1462506-A (GB)
Title: Soldering material and a method of producing it
IPC: B23K35/28
Filed: 1974-05-21
Abstract: 1462506 Soldering material VEREINIGTE ALUMINIUM-WERKE AG 21 May 1974 [23 May 1973] 22736/74 Heading C7A A soldering material used in the fluxless soldering of aluminium alloys under a protective gas atmosphere contains with the remainder being aluminium and unavoidable impurities i.e. Mn, Fe, Ti, Cu and Zn. Prior to processing the cast bars of solder, a homogening treatment of 6-24 hours at 420-560C is used.
Patent GB-1387293-A (GB)
Title: Device and method for sealing heat-exchanger tubes
IPC: F28F11/02
Filed: 1972-05-15
Abstract: 1387293 Welding by explosion pressure SIEMENS AG 15 May 1972 [18 May 1971] 22758/72 Heading B3R [Also in Division F2] An explosively welded metallic closure plug for a heat exchanger tube comprises a cylindrical member 2 closed at one end and externally tapered at the open end 22. A cardboard or plastics sleeve 3 is located within the plug and is closed at the outer end 33. The end 33 is enlarged to retain the plug temporarily when it is inserted in a tube to be closed, and fins 34 may be provided for this purpose. An explosive charge 5 is held in the sleeve 3 within the tapered portion 22 of the plug 2, and a detonator 4 is situated in the end of the sleeve 3. Detonating wires 41 pass along a groove 35 within the sleeve. In use the plug is inserted within the end of a heat exchanger tube (preferably at the point supported by the tube sheet), and is temporarily held therein by the end of the sleeve 3. When the charge 5 is detonated the shock front causes the tapered portion 22 to progressively expand towards the open end of the plug. A thin layer of molten metal is formed as the surface 22 contacts the tube interior to weld the plug to the tube. The plug 2 is preferably of the same material as the tube to be closed but may be of different material providing that the coefficients of expansion of the materials are similar. The angle of taper of surface 22 is preferably between 2 and 6 degrees but is dependent on the detonation velocity of the charge 5, the amount of explosive used and the dimensions of the plug 2.
Patent GB-182715-A (GB)
Title: Improvements relating to motor tractors
IPC: B62D11/08
Filed: 1921-08-27
Abstract: 182,715. Kroyer, J. M. Aug. 27, 1921. De-clutching for steering, and differential braking for steering. - Comprises driving and steering mechanism for tractors in which preferably all four wheels are driven, the wheels on each side being controlled through a clutch and a brake operated by a steering hand-wheel and a cam-shaft. A driving-shaft 26 carries two clutch members 18, through which countershafts 23 are driven. From each of these countershafts the corresponding front road wheel is driven through a chain 25, the rear wheels on each side being driven by a chain from the front wheel. The clutches 18 are disengaged by means of levers 14 connected together by a rod 11 having a roller 9 which works in a cam-groove on a shaft 5 rotated by the steering hand-wheel. The rod 11 carries an extension 30 at each end having sliding wedges or cams which engage ears 35 on brakebands 37 to act on the clutch members. When the shaft 5 is rotated in either direction one of the clutches is wholly or partially disengaged, and the tractor turns to that side. Further rotation of the shaft 5 causes the application of the brake on the side on which the clutch has been released, and the tractor makes a sharper turn.
Patent GB-1433507-A (GB)
Title: Pharmaceutically active 2-substituted adenosine-3,5-cyclic  monophosphates
IPC: C07H19/213
Filed: 1973-05-15
Abstract: 1433507 Pharmaceutically active cyclic nucleotides TAKEDA YAKUHIN KOGYO KK 15 May 1973 [15 May 1972] 23035/73 Heading C2P [Also in Division A5] Novel nucleotides of Formula I and pharmaceutically acceptable salts thereof, where R is C 1-6  alkyl, C 2-6  alkenyl, C 3-6  cycloalkyl, aryl, aralkyl, di-(C 1-6  alkyl) amino, heterocyclic, halogen or R<SP>1</SP>A- where R<SP>1</SP> is C 1-6  alkyl, C 2-6  alkenyl, C 3-6  cycloalkyl, aryl or aralkyl and A is S, O or NH and R (except when halogen) and R<SP>1</SP> may have one or more substituents selected from C 1-6  alkyl and alkoxy, C 2-6  alkenyl and alkenyloxy and C 3-6  cycloalkyl and cycloalkoxy, may be prepared by cyclizing the corresponding 5<SP>1</SP>-monoester (or an ester thereof which may be de-esterified by a base) and optionally forming a salt. The 5<SP>1</SP>-monoesters required as starting materials may be prepared by reacting the corresponding 2-substituted nucleoside with pyrophosphoryl chloride and optionally forming a salt. 2-n-Butylaminoadenosine-5<SP>1</SP>-monophosphate ammonium salt is prepared by reacting 2 - chloroadenosine - 5<SP>1</SP> - monophosphate ammonium salt with n-butylamine. The nitrophenyl esters of 2-methyl- and 2-chloroadenosine - 5<SP>1</SP> - monophosphate tributylammonium salt are obtained by esterification with nitrophenol. The compounds of Formula I may be used as the active ingredients in conventional pharmaceutical compositions, optionally together with inositol.
Patent GB-666817-A (GB)
Title: Improvements relating to dry gas meters
IPC: G01F3/22
Filed: 1949-09-07
Abstract: 666,817. Gas meters. THORP & CO., Ltd., T., and THORP, R. F. Sept. 12, 1950 [Sept. 7, 1949, Oct. 3, 1949], Nos. 23157/49 and 25347/49. Class 54. A gas meter comprises a plurality of similar gas measuring units c and means for coupling all the units to a single index mechanism o, each of the units having two diaphragms and being arranged in a separate compartment with transfer valves and flag rods, gas inlet and outlet connections. In the preferred embodiment, four units c are housed in a casing a to which gas is admitted by a pipe b, and each unit has its outlet connected to the tapering faces of a manifold d leading to the outlet pipe e. Each unit has a gear box f connected to a crank g. The four cranks are coupled by a frame h formed by light metal strips riveted together and connected to a crank i which is connected to the index mechanism o through a worm reduction gear and a double dog clutch drive n. The units may be coupled to operate in sequence so that variations in delivery pressure are minimised. The units are separately removable and the casing may have a removable cover to facilitate inspection and repair. The index mechanism may be driven from one of the cranks g. Alternatively, the gear boxes may be independently coupled to the index mechanism through differential gear trains or they may be connected together and to the index mechanism by shafts. When shafts are used the units may be arranged in line.
Patent GB-306386-A (GB)
Title: Improvements in and relating to testing and training device for aviators
IPC: G09B9/12
Filed: 1928-08-11
Abstract: 306,386. Ocker, W. C. Feb. 18, 1928, [Convention date]. Testing and developing physiological functions. -Apparatus for observing the physiological reactions of prospective aviators and training them in the use of instruments and controls, consists in a whirling chair fitted with a bank and turn indicator. The bank and turn indicator and preferably also a compass, an altimeter, an inclinometer, and an air-speed indicator, may be mounted in a hood so as to exclude vision of other objects. The chair 10, Fig. 1, is mounted for free rotation on a ball 14 frictionally mounted in a cup on the pedestal 15 so as to be angularly adjustable to determine the plane of rotation of the chair. The chair may be fixed in position when required by pedal-operated looking means 17, 18. The chair is provided with an adjustable head-rest 19, with a spring-controlled rudder-bar 24 carrying a stylus 28 moving over a sheet of paper on a platen 23, and with a counter-balanced pivotally mounted U-frame 31 rotated with the chair and adapted to be clamped in adjusted position and carrying a universally adjustable hood 34<1> enclosing the instruments. Within the hood, and illuminated by a small electric light 36, Fig. 2, are arranged a bank and turn indicator 39, a magnetic compass 40, and an inclinometer 41. Air under pressure, to operate the bank and turn indicator, is supplied from a hand pump 38, Fig. 1. The foot rudder is employed to register the reactions of a subject to turning effects, and the instruments serve to correct erroneous impressions caused by change in the direction of movement. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of mechanism controlled by a hand-wheel for locking the ball 14 in angularly-adjusted position. This subject-matter does not appear in the Specification as accepted.
Patent GB-949591-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B9/04
Filed: 1961-06-27
Abstract: 949,591. Diaphragm pistons. G. M. J. C. BUSSERY. June 27, 1961 [July 21, 1960], No. 23218/61. Heading F2T. [Also in Division F1] In a reciprocating pump a close-fitting sheath 14 of elastic material is fitted over the plunger 12 and the free edge of the sheath is clamped between sections 2, 3 of the pump body. The sheath 14 acts as a return spring for the plunger.
Patent GB-852395-A (GB)
Title: Universal joint
Inventor: QUINN ALOYSIUS JOSEPH
IPC: F16D3/40
Filed: 1958-07-19
Abstract: 852,395. Universal joints. BROOKS EQUIPMENT CORPORATION. July 19, 1958, No. 23250/58. Class 80 (2). In a Hooke's joint pins 7, pivotally connecting shaft forks J, J<SP>a</SP> with a centre-block 1, are retained for free pivotal movement in the block and forks by forming one, 7. as a through pin with a bevelled centre groove 8 engaged by the bevelled inner ends of two separate parts 9, 10 of the other pin, themselves retained in the fork J<SP>a</SP> by snap rings 11a carried in recesses in the block and sprung into grooves in the pin parts 9, 10. Oil cups 14 and channels are provided in each pin part 9, 10. U.S.A. Specification 2,648,207 is referred to.
Patent GB-598275-A (GB)
Title: A process for the pattern glazing of paper
IPC: D21G1/00
Filed: 1945-09-10
Abstract: 598,275. Glazing paper. EMPIRE PAPER MILLS, Ltd., WILTSHIRE, W. A., and SMITH, W. Sept. 10, 1945, No. 23307. [Class 96] A pattern glaze effect is produced on paper by passing it between a pair of rolls, one of which applies pattern-carrying means, e.g. a plate embossed to not more than 0.003 ins. in height to compress the paper in desired areas, the paper then passing between super-calendering rolls to flatten any embossment and to enhance the pattern glaze thus produced. Alternatively, the effect may be produced by a continuous patterned sheet fed through with the paper. A pattern-carrier with portions of different hardness may be used instead of one with raised portions. The pressure is at 160 to 500 lbs. per linear inch, and the temperature 100‹ to 150‹ F.
Patent GB-186243-A (GB)
Title: Improvements in or connected with centrifugal pumps
IPC: F04D29/16
Filed: 1921-09-02
Abstract: 186,243. Hargrove, J. Sept. 2, 1921. Wear, preventing and adjusting for.-Rings b, c are attached to the casing and impeller of a pump respectively so that the surfaces b<1>, c<1>. which just clear each other, are in a plane at right-angles to the shaft. The rings b have tongues b<4> fitting into grooves in the casing and the rings c are of L-section; grub screws may be used with each ring if desired. The rings can be tested in position when the upper part a<2> of the casing is removed. The impeller is held against end movement by rings e of gun-metal or the like, which are made in halves, a limb e<1> on each half engaging an annular recess in the shaft. The halves are held together by an encircling ring of phosphor-bronze
Patent GB-1466043-A (GB)
Title: Method of preparing 5-nitrofurfural diacetate
IPC: C07D307/71
Filed: 1975-05-29
Abstract: 1466043 5-nitrofurfural diacetate INST ORGANICHESK SINTEZA AKAD NAUK LATVIISKOI SSR 29 May 1975 23394/75 Heading C2C 5-nitrofurfural diacetate is prepared by nitrating furfural or furfural diacetate with HNO 3 /H 2 SO 4  in acetic anhydride, treating the resultant compound with water and neutralizing the solution with alkali; the nitration step being carried out by gradual and simultaneous addition of furfural or furfural diacetate and HNO 3 / H 2 SO 4  to acetic anhydride.