baber/WOPTO huggingface dataset:
Patent GB-596174-A (GB)
Title: Improvements in or relating to driving systems, for example, ship propulsion systems, of the type including opposed-piston engines
IPC: F02B75/18
Filed: 1945-07-23
Abstract: 596,174. Propelling ships. GENERAL ELECTRIC CO., Ltd. (Smith, D. M.). July 23, 1945, No. 18857. [Class 114] [Also in Groups XXVII and XXXV] In a ship propulsion system, including an opposed-piston engine, the pistons reciprocating in a cylinder 4 are connected to two crankshafts 5, 6, each driving an electric. machine 11, 12, producing alternating current and connected electrically so as to synchronize the crankshafts. A two-stroke diesel engine is shown in which each crank-shaft drives a ship's propeller. The electric machines 11, 12 may be arranged to act as alternators at cruising speeds and as motors with paralleled windings to assist the engine at high speeds, when they receive current from alternators driven by a similar supplementary engine. Clutches may allow electric propulsion to continue if the main engine is stopped. Alternatively, the electric machines 11, 12 may be for direct current, the armature windings then being tapped to provide alternating current to synchronize the crankshafts. The crank-shafts may also be connected by a transverse shaft or other linkage incorporating a spring coupling, and arranged to carry no load, except that it may drive an excitor for the direct-current windings of the alternators 11, 12, a blower and other auxiliary machinery. Further, it may include a shearing device or an electric relay which cuts off the fuel if too much power is transferred between the shafts 5, 6, and the relay may indicate small transfers of power and thus loss of efficiency at either end of the engine. Specification 598,083 is referred to.
Patent GB-1012535-A (GB)
Title: Process for the production of a network of synthetic filaments
IPC: D04H3/14
Filed: 1964-05-06
Abstract: A process for the production, from a tow of stretched acrylonitrile polymer filaments, of a filamentary structure in which the filaments are cross-linked so that they may be laterally extended for example to a width of 4 or 5 yds. to form a net, comprises subjecting the tow, in which the acrylonitrile content is at least 70% and in which the filaments are in the form of an aqueous gel containing, for each 100 parts of polymer (reckoned as dry) 100-300 parts of water and at least 0,5 parts of an organic solvent for the polymer, to a temperature of at least 65 DEG C.  The tow may be stretched in the spinning zone-i.e. in the coagulating bath or dry spinning cell-and also after having been washed.  The tow is preferably opened-by a turbulent gasbefore being introduced on a perforated travelling belt to a chamber through which hot air is circulated.  The filamentary structure produced may be heat-relaxed or stabilized stretched, crimped-for p  example in a stuffer box-, or dyed.  The acrylontrile polymer may be a homopolymer, copolymer or a graft copolymer, and may include up to 30% of one or more ethylenic monomers copolymerisable therewith, for example vinyl, vinyl sulphonic and acrylic compounds.  The solvent may be N-formylated amines, dimethyl-sulphoxide, g -butyrolactone or dimethylacetamide.
Patent GB-633777-A (GB)
Title: Improvements in slow combustion stoves
IPC: F24B13/00
Filed: 1947-07-16
Abstract: 633,777. Closed stoves. HAARDENFABRIEK J., JAARSMA, N. V., and THOMEE, A. L. July 16, 1947, No. 18971. Convention date, March 26, 1946. [Class 126] A closed slow combustion stove in which the front, flue plate and smoke box are connected by gas-tight uncemented joints formed by inter-engaging grooves and tongues or flanges and are held together by long tiebolts. The front part 1 of the stove is provided with a groove 11 into which an edge 12 of the base of the stove fits. An edge 14 of the front part 1 of the stove fits into a groove 13 on the flue plate 6. Similarly edges 16 of the rear casting 9 of the stove fit into grooves 15 on the flue plate 6. The front part 1, flue plate 6 and rear casting 9 are detachably secured by studs 17 which draw together shrouds 5 on the front part 1 and projections 18 on the rear casting 9. Each groove may contain resilient material such as asbestos cord against which the complementary rim or flange presses when the studs 17 are secured by nuts 19. In another stove embodying the invention provision is made for heating an air stream between the flue plate and the rear casting.
Patent GB-1376860-A (GB)
Title: Motor car bumper
IPC: B60R19/20
Filed: 1973-04-19
Abstract: 1376860 Vehicle bumpers G E HORNSBY 19 April 1973 18981/73 Heading B7J A vehicle bumper comprises a rear bar 14 carried by the vehicle, a channel section front bar 17 supported on bar 14 by bolts 18 pivoted at 19 to bar 17 and engaged by nuts 21 on the rear side of bar 14, and elongate air bags 22, 24 located between the bars and having inflation valves 23, 25 extending through holes 16 in bar 14. In the embodiment of Fig. 5 a pair of secondary bars 41, 43 are located between the two main bars 33, 35 and mounted on pins 36 pivoted to bar 35 and having heads 39 to the rear of bar 33. Bearings 40, 42, 44 rigid with bars 33, 41, 43 engage the pins. Compression springs 45, 46 are located between bar 33 and bearings 42 and between bar 41 and bearings 44 respectively. Four air bags 47 with inflation valves 48 are located between bars 35 and 43.
Patent GB-1457600-A (GB)
Title: Forging and upsetting
IPC: B21J9/08
Filed: 1974-05-01
Abstract: 1457600 Forging ROWEN-ARC Ltd and WELDING LIAISON Ltd 30 July 1975 [1 May 1974] 19010/74 Heading B3H A method of performing a hot forging or upsetting operation on a metallic workpiece 12 in the form of a single element comprises generating the necessary heat by friction resulting from relative movement between the workpiece and another body abutting the workpiece, e.g. a face plate 15, the workpiece being subsequently separated from the body before or after the forging or upsetting operation. The workpiece 12 is held in the chuck (7) of a known friction welding machine, Figs. 1, 2 (not shown), and its free end is located in a die cavity 14. The die is formed in two parts a block 16 and the face plate 15 and as heat is generated by the friction occurring as the workpiece is rotated, the material of the workpiece end fills the cavity 14. Alternatively the workpiece may be heated by friction and forged or upset in different apparatus. The workpiece is a rod or tube and it is of brass or other copper alloy, but it may also be of steel, aluminium or aluminium alloy. The die is of a refractory material or of a metal that will not fuse with the workpiece.
Patent GB-293458-A (GB)
Title: Improvements in laminated springs
IPC: F16F1/18
Filed: 1928-07-02
Abstract: 293,458. Aktiebolaget Svenska Spiralfabriken. July 7, 1927, [Convention date]. Laminated springs.- In springs in which the leaves are provided with longitudinal projections or ridges on both sides to prevent lateral displacement, each leaf is formed with two projections 5 on one side and two similar projections 6 on the other side, but disposed inwardly, so as to fit between the projections 5 on the adjacent leaf. The width of each projection is approximately one sixth of the width of the leaves. Modifications are described in which the projections are of different widths.
Patent GB-927120-A (GB)
Title: Improvements in or relating to a double constant velocity universal joint
IPC: F16D3/2245
Filed: 1961-05-29
Abstract: 927,120. Universal joints; securing race elements on shafts. DANA CORPORATION. May 29, 1961 [May 31, 1960], No. 19393/61. Class 80 (2). A universal joint assembly comprises two constant velocity ratio joints 12, 14 each having substantially axially grooved inner and outer races 32, 34 connected by torque transmitting balls 28 retained in position by cages 26, the outer races being formed at the ends of a onepiece tube 10 and separated by a web portion 50 thereof. The centres of curvature 38, 40 of the outer and inner ball grooves in the plane of each joint lie on opposite sides of the centre of curvature 36 of frusto-spherical surfaces on the cage 26 and the races, which slide over each other. A shaft 20 is splined for axial movement in the inner race 32 of the joint 12. A shaft 20<SP>1</SP> has splined engagement with the inner race 16<SP>1</SP> of the joint 14, and is prevented from moving axially away from a shoulder 48 on the shaft by a washer 44 and a snap ring 46. Covers 55 are fitted at each end of the tube 10.
Patent GB-596530-A (GB)
Title: Improvements in and relating to reflectors for attachment to mudguards of cycles, vehicles and for other purposes
IPC: B62J6/20
Filed: 1945-07-30
Abstract: 596,530. Reflectors. WASDELL, Ltd., and SHUM, C. July 30, 1945, No. 19386. [Class 3 (ii)] A reflector 3 is attached to a cycle mudguard &c. 1 by mounting it in a holding shell 5 formed with opposed projections 8 in its perimeter. The projections 8 either snap through the hole 2 in the guard 1, or alternatively pass to the rear through gaps in the hole rim, or, according to the Provisional Specification, through the larger axis of a non-circular hole, so that the shell may be secured by a slight rotation.
Patent GB-436406-A (GB)
Title: Improvements in refrigerating apparatus
IPC: F25B1/06
Filed: 1934-06-30
Abstract: 436,406. Refrigerating. STEWART, F. C., 150, Helen Street, Govan, Glasgow. June 30, 1934, No. 19392. [Class 29] Vacuum systems.-In a machine having an evaporator 1 divided into compartments by transverse baffles and exhausted by one or more steam-ejectors 2 in each compartment all operating in parallel, the fall of level of the water or other refrigerant in a compartment consequent upon the shutting-off of the ejector of that compartment to diminish the total cooling effect is utilized to cut off the supply of refrigerant to that compartment. The cooled water is withdrawn through branch pipes 10 and a main 11 by pumps 4 and returned through a pipe 9 with a branch spray pipe 8 for each compartment, and the flow through each branch is controlled by a float valve 7. Valves 15 in the steam supply to the ejectors may be controlled by thermostats 17 in the cold main. The ejectors discharge into a common condenser 3 and auxiliary condenser 18 served by ejectors 19, 20.
Patent GB-1034279-A (GB)
Title: Improvements in or relating to polyester resins
IPC: C08K5/00
Filed: 1964-05-11
Abstract: Compounds having the formula <FORM:1034279/C2/1> where X is chlorine or bromine are prepared by reacting chlorine or bromine with the corresponding alkenyl ester of the formula M(OCH2CH = CH2)3 where M is antimony or boron. The halogenation is preferably carried out in an inert halogenated solvent at a temperature from - 30 DEG  to + 25 DEG  C.  The alkenyl ester may be prepared by reacting the corresponding alcohol with (a) the metal halide SbCl3, preferably in the presence of ammonia or an amine, or (b) with the oxyacid of the metal, e.g. H3BO3.  Alternatively the antimony or boron compounds may be prepared by halogenating the allyl alcohol to the corresponding dibromo or dichloropropanol and then reacting the dihaloalcohol with the metal halide, e.g. SbCl3, or with the oxyacid, e.g. H3BO3.  In the examples:-(1) tris - (2,3 - dibromopropyl)-antimonite is prepared by reacting triallyl antimonite in methylene chloride with bromine; (2) tris - (2,3 - dibromopropyl) borate is prepared by reacting triallyl borate in methylene chloride with bromine.ALSO:Fire-resistant polyester resins are formed by curing compositions comprising (A) 30 to 83% by weight of the reaction product of (1) 2.0 to 2.5 molar parts of at least one aliphatic polyhydroxy compound, (2) 0.4 to 2.0 molar parts of a dibasic carboxylic acid or anhydride containing a polymerizable double bond, and (3) 0 to 1.6 molar parts of a non-polymerizable dibasic carboxylic acid or anhydride; (B) 15 to 68% by weight of a monovinyl aromatic solvent for (A); and (C) 2 to 30% by weight of a fire-retardant additive having the formula (RO)nM or (R1O)3Sb, where M is boron, silicon, titanium, tin, lead, arsenic or bismuth, R is a vicinal dihaloalkyl group where the halogen is chlorine or bromine and n is 3 or 4, and R1 is a vicinal dibromoalkyl group.  In the examples (A) is formed from fumaric acid, phthalic anhydride and propylene glycol, (B) is styrene and (C) is one of the following: tris(2,3 -dibromopropyl)antimonite; tris(2,3 - dibromopropyl)borate; tetrakis(2,3 - dibromopropyl)-silicate and tetrakis(2,3 - dichloropropyl)-silicate. These silicate compounds, having the general formula Si(OCH2CHXCH2X)4, where X is chlorine or bromine, may be prepared by reacting Si(OCH2CH=CH2)4 with chlorine or bromine, preferably in an inert halogenated solvent at a temperature from - 30 DEG  to + 25 DEG  C. Alternatively they may be prepared by chlorinating or brominating allyl alcohol and reactin the product with SiCl4.  In the examples tetrakis(2,3 - dibromopropyl)silicate and tetrakis(2,3 - dichloropropyl)silicate are formed by brominating and chlorinating tetrallyl silicate respectively, the tetrallyl silicate being formed from allyl alcohol and silicon tetrachloride.
Patent GB-596630-A (GB)
Title: Improvements relating to electromagnetic relays
IPC: H01H51/22
Filed: 1945-07-31
Abstract: 596,630. Electromagnetic relays. SIEMENS BROS. & CO., Ltd., BRYAN, E. A., and JACKSON, W. B. July 31, 1945, No. 19615. [Class 38(v)] In an electromagnetic relay, an armature 29, 30 carrying contacts 15, has each end thereof situated in the gap between a pair of pole-pieces 11 12, the armature being pivotally mountec at 16 in a U-shaped non - magnetic frame 17 clamped between the pole-pieces there by determining the distance therebetween. Clamped between pole-shoes 9, 10 are permanent magnets (not shown) for polarising the pole-pieces. The armature is influenced either by a single coil 20 subject to current in either direction or by two coils separately energised to produce opposite magnetic effects on the armature, which is mounted on a pin bridging and engaging the insides of the limbs of the frame 17. On energisation of coil 20, the armature takes up one of its diagonal positions and one pair of contacts 15, 21 is closed. Reverse energisation, or energisation, of the other winding causes the other pair to be closed. The armature may be arranged so that it has a normal central position, as shown, or so that it remains in one of its diagonal positions until attracted to the other. One of the permanent magnets between the pole shoes may be replaced by a non-magnetic spacer and both may be replaced by an electromagnet having one or two windings.
Patent GB-1135538-A (GB)
Title: Bolt tightening tool
Inventor: ABLE EDWARD THORNE
IPC: B25B21/00
Filed: 1967-04-28
Abstract: 1,135,538. Wrenches, screwdrivers. B. K. SWEENEY MFG. CO. 28 April, 1967, No. 19646/67. Heading B4W. [Also in Divisions B3 and F2] A nut runner - screwdriver, comprises a socket 18 adapted to be connected to a manually, or power - operated impact wrench 58 Fig. 9, for rotation of a nutengaging socket 25 carried by a stud 17, and also for rotation, at a slower speed, of a screwdriver 43, so that a nut 53 can be screwed on to a bolt 50 which is engaged by the screwdriver. Stud 17 is screwed to a housing 15 at 16, and the latter is integral with socket 18 Fig. 4. A hollow rotor 21 is rotatably mounted in housing 15 and carries an over-running ratchet clutch unit 39, which drives a socket 36 carrying the screwdriver 43 in the same direction as that of stud 17. The rear end of rotor 21 is internally toothed and co-operates with two planet gears 27 carried by shafts 30, which also carry planet gears 28 for co-operation with the internal teeth of a knurled collar 33. Shafts 30 are mounted in socket 18, and in a slip ring 31 which is rotatably mounted in rotor 21, and is secured to socket 18 by pins (56), Fig. 6 (not shown). Screwdriver 43 is replaceably and non-rotatably secured in socket 36 by a pin 46 which engages a flat portion 45 formed on the screwdriver, and a ball 60 retains the screwdriver in the socket. In operation, the screwdriver is inserted in the slot 52 of the bolt Fig. 9, and a spring 42 is compressed until socket 25 is placed over the nut 53. Collar 33 is gripped, and socket 18 along with housing 15, stud 17, and socket 25, are rotated. Gear sets 29 orbit around the tool axis, and gears 27 rotate rotor 21, which drives socket 36 in the same direction as stud 17, but at a slower rate, through clutching unit 39, so that the rotation of the bolt 50 lags behind that of nut 53, and the latter is tightened. If a power-operated impact wrench is used, the impacts intermittently rotate the nut more than twice as fast as the bolt, and this causes over running of clutch unit 39 at each impact, so as to prevent damage to the gear trains.
Patent GB-135321-A (GB)
Title: Improvements in or relating to Apparatus or Appliances for Raising Submerged Ships or Vessels, or other Articles or Objects.
Inventor: GORDON RUSSELL
IPC: B63C7/10
Filed: 1918-11-29
Abstract: 135,321. Gordon, R. Nov. 29, 1918. Sunken ships &c., raising. - A flexible cylindrical air-container 1 is provided with air-inlet pipes 2, which may be armoured, extending to the surface and also at its lowermost part with one or more open sleeves 9, 10, 11, those not required for any particular operation being closed with plugs 12. The bag is strengthened by bands 13, overlying which are metallic straps 15 filled with rings 15<x> or the like for connexion with the object to be raised. The bag is attached to the sunken vessel or placed in the hold in a collapsed state, and is then inflated by air through the pipe 2. As the vessel rises, the internal pressure is maintained equal to the external pressure, excess air escaping by the sleeve 9.
Patent GB-126581-A (GB)
Title: Improvements in or relating to Gradient Posts for Railways and the like.
Inventor: MUIRHEAD WILLIAM
IPC: B61L5/12
Filed: 1918-11-29
Abstract: 126,581. Muirhead, W. Nov. 29, 1918. Signals for line. - Any change of gradient may be indicated by different arrangements of a V-shaped arm e on the upper end of a post a which has, on one side, a convex shoulder, and on the other side a concave shoulder c with horizontal shoulders d. The arm is fixed to the post by a bolt peg or dowel through a hole in the post and through either of the holes f, h in the arm.
Patent GB-431741-A (GB)
Title: Improvements in or relating to the adjustment of tool rests in lathes, grinding, milling and like machine tools
IPC: B23Q5/22
Filed: 1934-07-05
Abstract: 431,741. Grinding. AKTIEBOLAGET M. HOLMQUIST, 10, Strandgatan, Halmstad, Sweden. July 5, 1934, No. 19786. Convention date, July 26, 1933. [Class 60] [See also Group XXII] A dividing plate for adjusting the slide of a grinding-machine through worm gearing is provided with a rotatable stop which is removable from its bearing and at the end which projects from said bearing is provided with a number of plane stop surfaces arranged at different distances from its axis. The crank arm 1 fastened to the end of a worm-spindle 2 and the dividing plate 3 are of ordinary construction. The dividing plate carries a lug 6 through which passes an adjusting screw 7, the end of which bears on the periphery of the stop-pin 10 ; the latter is provided with a number of flats, which vary in their distances from the axis of the pin, and has a latch 13 so that it may be indexed around to bring the flats at the end in a proper position for engagement by the screw 7 ; the latter gives the final adjustment required. The pin 10 may be withdrawn or removed when the crank 1 is to be given a number of complete rotations. The device may be used to adjust the slide on which a grinding disc in a centreless grinding- machine is mounted.
Patent GB-1511265-A (GB)
Title: Apparatus for sensing the relative position of two object
IPC: G05B19/18
Filed: 1975-05-12
Abstract: 1511265 Optical position sensing NATIONAL AERONAUTICS & SPACE ADMINISTRATION 12 May 1975 [31 May 1974] 19849/75 Heading H4D The Specification describes apparatus for optically sensing the position of an article having mounted thereon a reflective target at a predetermined position, by a sensor mounted on a movable arm which is moved to a position above the article whereby the arm may be lowered and mechanically grasp, or make suitable connection with a cooperating portion of the article. The apparatus includes a photo electric sensor comprising a silicon quadrant detector 14 and three associated light emitteing diodes LED 1 ,  2 ,  3 , Fig. 7. The article 10 has mounted thereon reflective target 15 comprising a cube corner reflector 30, Fig. 4, and disposed on opposite sides thereof planar mirrors 31 and 32. In operation, the arm is moved under control of the operator, aided by, for example television, to a position as close as possible to one wherein the co-ordinate axes X, Y of the detector 14 are parallel to the co-ordinate axes X m , Y m  of the target 15 on handle 11 and the respective Z and Z m  axes are approximately aligned. The final accurate predetermined mutual positioning of the two coordinated systems obtains as a result of the action of servo motors (not shown) which are respectively arranged to move the apparatus in directions a x , α y , # x , # y , # and R (Fig. 1), in the appropriate sense until these respective deviation signals are nulled, and movement ceases when alignment is achieved. The actuator 12 may then be moved automatically, or controlled by the operator through a predetermined distance in the Z-direction whereupon fingers 13 are operated to correctly grasp handle 11. Diodes LED 1 , LED 2 , LED 3  are switched on successively, controlled by three phase clock signals # 1 , # 2 , # 3  from the pulse generator (Fig. 8). The quadrant detector output signals are fed to subtractors 51, 52 from which are respectively obtained signals V xn  = A - B and V yn  = C - D where n = 1, 2, 3 corresponding to the clock phase. Sample and hold circuits 58, 59, 60, 66, 67, 68 select the values signals V xn , V yn  during the appropriate phase and from which the deviation signals are obtained according to the relationships: In another embodiment, telescopic sections 83, 85 and track 81 which produce translational movement may be replaced by angularly displaceable means when the displacements are small (see Fig. 9, not shown).
Patent GB-1314684-A (GB)
Title: Arc welding supply having dual control system
IPC: B23K9/10
Filed: 1970-04-24
Abstract: 1314684 Welding by fusion CHEMETRON CORP 24 April 1970 [25 April 1969] 19919/70 Heading B3R [Also in Divisions G3 and H2] In an arc welding power supply which may feed either of two wire-fed welding torches 6, 7, each torch has a switch which connects corresponding adjustable elements to a control circuit and thus selects a desired arc voltage and arc current-voltage characteristic. Fig. 2 shows an arrangement in which the torch 6 carries a switch 96 which may be closed to actuate a relay 94 and hence further relays 25, 98 provided that the other torch 7 is not in operation and that relay contacts 97-1 are therefore closed. Relay contacts 98-1 operate in a similar interlock circuit with the torch 7, and the relay 25 selects a corresponding one of each pair of potentiometers .39, 42; 22, 24; 62, 67a which respectively control the arc currentvoltage characteristic, the inductance of a saturable reactor 20 in the arc circuit, and the arc voltage.
Patent GB-1502327-A (GB)
Title: Organolithium polymerization initiators and their preparation
IPC: C08F297/04
Filed: 1975-05-13
Abstract: 1502327 Organodilithium oligomers DENKI KAGAKU KOGYO KK 13 May 1975 [15 May 1974] 19991/75 Heading C2J [Also in Division C3] A polymerization initiator of the formula is obtained by oligomerizing α-methyl styrene in a solvent, in the presence of lithium metal, to form Li-A-Li, co-oligomerizing the residual #-methyl styrene and a conjugated diene added gradually, to form Li-B-A-B-Li, and finally adding further conjugated diene and oligomerizing to form Li-C-B-A-B-C-Li. In examples the diene is butadiene or isoprene, and the solvent is tetrahydrofuran, triethylamine or tetrahydrofuran/benzene.