baber/WOPTO huggingface dataset:
Patent GB-412773-A (GB)
Title: Improvements relating to grid controlled valve apparatus
IPC: H02M7/15
Filed: 1933-07-07
Abstract: 412,773. Converting. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Võsteras, Sweden. July 7, 1933, No. 19319. Convention date, July 9, 1932. [Class 38 (ii).] Relates to a rectifier arrangement employing a grid controlled discharge device and consists in introducing the control voltages between the grids, the voltage of each grid being determined with reference to the voltage of the grid of the previously burning anode. Since the grid associated with a conducting anode assumes practically the cathode voltage, the voltages of the other grids can be determined with reference to the voltage of this grid. The product of the number of phases and the frequency in the grid circuit is equal to the product of the number of phases and frequency in the main circuit. In the form shown in Fig. 1 the grids are interconnected through resistances 26 and secondary windings 31 of a grid transformer 7, the control voltage having a frequency three times the supply frequency. The moment of ignition may be varied by adjusting the phase of the control voltage. In a modification, the grid transformer has a single secondary winding, adjacent grids being connected to opposite ends of this winding. In a further modification for an arrangement using an interphase transformer to give double- 3-phase operation, the grids are arranged in two groups and supplied from two secondary windings of a 3-phase transformer, the frequency being the same as that of the main supply. In a further modification for a 6-phase arrangement having a 3-phase interphase transformer, the separate phase windings of a 3-phase transformer are connected between the grids of oppositely phased anodes. In a further modification for a double-3-phase arrangement, each anode has two grids, each of which is connected to the grid of another anode of the same 3-phase system over the secondary winding of a single phase transformer. Specifications 209,426, [Class 38 (ii)], and 378,062 are referred to.
Patent GB-1262115-A (GB)
Title: Improvements in or relating to protective devices for electrical circuits
IPC: H03K17/082
Filed: 1969-04-16
Abstract: 1,262,115. Protective arrangements. ROBERT BOSCH G.m.b.H. 16 April, 1969 [19 April 1968], No. 19367/69. Heading H2H. An excess current protection circuit for a controllable semi-conductor element has the emitter-collector path thereof connected in series with a load and the base-emitter path made responsive to the load current. A transistor 5 has its emitter-collector path connected in series with a load 4 and a resistor 6 across a D.C. supply 3. The base of the transistor is connected to the emitter by a resistor 11 and a constant potential is provided by a series of diodes 9... 10 and connected between the base of the transistor and the resistor 6.. Closure of a switch 7 biases the base of the transistor 5 so that it is made conductive causing current to flow in the load 4 and the resistor 6. Should the load current tend to become excessive, as by a short circuit, the volt drop across the resistor 6 increases thereby decreasing the base bias of the transistor thereby decreasing the current flowing in the transistor and hence the load 4. The invention is applicable to motor vehicles the switch 7 then being the starting switch and the load 4 a. fuel injection device. In a modification a further diode is included in the circuit to prevent damage to the transistor by negative voltage peaks.
Patent GB-1481594-A (GB)
Title: Quaternary compounds and their use in nickel-brightener-leveler compositions
IPC: C25D3/18
Filed: 1976-05-11
Abstract: 1481594 Quaternary compounds DART INDUSTRIES Inc 11 May 1976 [23 June 1975] 19414/76 Heading C2C [Also in Division C7] Novel quaternary compounds of the formula wherein R 1  and R 2  represent hydrogen, halogen, hydroxy, carboxy, carboxy ester, sulphoxy, alkyl, amino or amido; R 3 , R 4  and R 5  represent hydrogen or alkyl; X is halogen ; represents a pyridine, quinoline or isoquinoline ring; and n is 0, 1 or 2, are prepared by reacting a monohalogenated aliphatic acid of the formula with an acetylenic diol of the formula in a molar ratio of 2 : 1 to produce an acetylenic diester of the formula and reacting this diester with a heterocyclic tertiary base of the formula or a salt thereof in a molar ratio of 1 : 2, in the presence of a solvent or water at an elevated temperature. The novel compounds are useful as nickel-brightener-levelers for use in electroplating baths.
Patent GB-771167-A (GB)
Title: Improvements in or relating to titanes
IPC: C07F7/08
Filed: 1955-07-05
Abstract: The invention comprises siloxy titanes of the general formula (R3SiO)4Ti, wherein R is a monovalent hydrocarbon or halogenated hydrocarbon radical.  They may be prepared by reacting acyloxy silanes of the formula R3SiOOCHR1 with titanium esters of the formula Ti(OR11)4, wherein R1 and R11 are monovalent hydrocarbon radicals. Mixed titanes are prepared when two or more different acyloxy silanes are used.  Examples of R, R1 and R11 are methyl, ethyl, octadecyl, cyclohexyl, cyclohexenyl, vinyl, allyl, octadecenyl, phenyl, tolyl, xenyl and benzyl; and R may also be halogenated, e.g., chloromethyl, bromophenyl, trifluorotolyl, trifluorovinyl, chlorohexafluorocyclopentenyl and heptachloroxenyl.  The examples describe the preparation of (1) tetrakis-(trimethyl-siloxy)-titane; (2) the compound [(CH3)2CH2=CH.SiO]4Ti; (3) the compound [(C6H5)(CH3)2SiO]4Ti; and (4) the compound [(C18H37)(C2F3)CH3SiO]4Ti. Th compounds are useful as water-repellents and as curing catalysts for polysiloxanes.
Patent GB-625242-A (GB)
Title: Improved machine for marking articles for identification purposes in laundries, dry cleaning and like establishments
IPC: D06F93/00
Filed: 1947-07-21
Abstract: 625,242. Typewriting machines. JACKSON, M. ST. C. July 21, 1947, No. 19435. [Class 100 (iv)] Typewheel machines for marking laundry &c.- In a marking device for use in laundries &c. comprising a pivotally mounted arm a carrying a drum b in which are disposed side-by-side a series of type wheels e, each having a handle g projecting through a slot in a plate h surrounding the drum, the plate having division markings appropriate to the type wheels, each wheel has. internal recesses or depressions which correspond to the position of the lettering on the wheels and which are engaged by spring catches k to hold the wheels in adjusted position. The arm is operated by a treadle or power through a linkage d against the tension of a spring c and as the head is lowered into the printing position where the type wheels approach the garment supporting pad w, an inking pad v mounted on a weighted arm x, pivoted to the drum at y is moved out of position by a roller 4 on the adjustable pillar 3. At each upward stroke the inking pad engages the type wheels by reason of the weight z, a spring 2 preventing the pad striking the type with a heavy impact. The type wheels e are in the form of rings and with spacing discs, surround a fixed cylinder m carrying a pair of guiding pins o for diametrically sliding the catches k which project through slots n in the cylinder to engage the recesses j. When the desired lettering has been moved into place the wheels e, spacing discs and end rings s are clamped together by a handle t screwed on the end of a spindle u.
Patent GB-1301099-A (GB)
Title: Valved piping
Inventor: PADDINGTON ARTHUR LOFTUS
IPC: F16K1/226
Filed: 1969-04-16
Abstract: 1301099 Valves BRITISH ROPES Ltd 7 April 1970 [16 April 1969] 19450/69 Heading F2V A valve for connection into a pipe-line comprises a housing having two tubular parts 1, 2 secured end to end in abutting relationship so as to provide a flow passage 3, 4. A sealing ring 10 in axial compression between the parts is exposed to the interior of the passage and provides a seat for a butterfly valve member 11. An operating spindle 12 of the valve member passes through holes in the ring and is accommodated between the housing parts before they are secured together. As disclosed, the butterfly member 11 is secured by pins (17), Fig. 3 (not shown), to the spindle and is assembled with bearings (19) located in complementary half bores (21) in the housing parts. The bearings may alternatively be half shells. The housing parts may as shown be welded into a pipe-line or a two-part wafer type housing, Fig. 4 (not shown), may be adapted for bolting between adjacent pipe flanges. The sealing ring may have annular ribs and/or recesses (22-25), Figs. 5a to 5g (not shown). Butterfly valve may be replaced by louvred flaps.
Patent GB-333345-A (GB)
Title: Improvements in packing rings for stuffing boxes and the like
IPC: F16J15/28
Filed: 1929-06-25
Abstract: 333,345. Cockle, W. June 25, 1929. Packing, metallic; non - metallic; compound metallic and non - metallic. - A stuffing-box packing is made by collapsing a tube 1 to concertina form, the tube being previously coated with graphite 3. The tube may be of fibrous material, or of wire, or of asbestos-covered wire, or of asbestos covered with wire, and may be woven, knitted, braided, or plaited. Alternatively, the tube may be of felt. The tube may be split and may be provided with an inner metal ring 5, which may be perforated and may be split.
Patent GB-149521-A (GB)
Title: Improvements in and relating to self-propelled chain-track vehicles
IPC: B62D55/10
Filed: 1919-08-07
Abstract: 149,521. Caterpillar Tractors, Ltd., (Holt Manufacturing Co.). Aug. 7, 1919. Endless-track vehicles.-The chain wheels are fitted with pads or cushions engaged by the rail heads to reduce noise and vibration. The wheels are formed in two parts 19, 26, the heads of which are bolted together. The rims are spaced apart and are of angle formation to take pads 24 of rubber, fibre, &c., which are engaged by the rail heads 17. The pads on the driving apparatus may be interrupted, sections being provided only between the teeth.
Patent GB-657500-A (GB)
Title: Improvements in or relating to marine torpedoes
Inventor: ROCARD YVES ANDRE
IPC: F42B19/10
Filed: 1948-07-20
Abstract: 657,500. Subaqueous audible signalling apparatus. SOC. ALSACIENNE DE CONSTRUCTIONS MECANIQUES. July 20, 1948, No. 19479. Convention date, July 28, 1947. [Class 118 (ii)] In a system involving the use of sound receivers attached to a body moving through a fluid, the sound receivers are housed in streamlined containers and supported by arms away from the body, the arms and the containers being of small cross-sectional dimensions compared to that of the body. Wave disturbances set up due to the motion of the body through the fluid have amplitudes which are greater for bodies having large cross-sectional dimensions, and accordingly the invention reduces the amplitude of the locally-generated, parasitic noise at the receivers. The Figure illustrates a torpedo 1 upon which microphones, mounted in housings 3a, 3b and connected to an acoustically-operated automatic pilot, are supported by telescopic arms 2a, 2b. The Specification as open to inspection under Sect. 91 states that the telescopic arms carry the microphones forward to their operating positions after the firing of the torpedo. This Specification also describes, Fig. 2 (Cancelled), an acoustic direction-finder comprising a plurality of microphones 1 supported from a parent body by arms 2. This subject-matter does not appear in the Specification as accepted.
Patent GB-1191241-A (GB)
Title: Process for the manufacture of a Titanium Dioxide Concentrate
IPC: C22B34/12
Filed: 1968-04-24
Abstract: 1,191,241. TiO 2  Concentrates. TITAN G.m.b.H. 24 April, 1968 [28 April, 1967], No. 19510/68. Headings C1A and C1N. A TiO 2  concentrate is obtained by mixing ilmenite with an excess of at least 36% HCl, boiling the mixture to drive off about one-third of the HCl and to precipitate the Ti which initially dissolved with the Fe, separating the solid TiO 2  and gangue, and recycling the filtrate after saturating it with HCl gas and removing Fe as FeCl 2 . The initial mixture may be heated to boiling over 15-30 mins, then boiled for 2-3 hrs. The separated solid may be washed with 10% HCl, then chlorinated in fluidized bed to give TiCl 4 . The filtrate may be reduced with F2 at 60-70‹ C., cooled to 20‹ C. and saturated with HCl at 20-26‹ C. to crystallize out FeCl 2 .4H 2 O, which is dried and thermally decomposed. The HCl gas so produced is used initially to saturate the filtrate, the final concentration from 30% being effected with the HCl driven off in boiling the initial mixture. The acid is preferably of 36-38% strength.
Patent GB-1505036-A (GB)
Title: Raster distortion correction circuit
IPC: H04N3/233
Filed: 1976-05-12
Abstract: 1505036 Electron beam deflecting systems SONY CORP 12 May 1976 [22 May 1975] 19557/76 Heading H1D [Also in Division H4] To compensate for the earth's field an annular core, wound with opposing windings 5a in series over opposite circumferential halves, and with a second similar pair of windings 5b wound in opposite hand over the first, is placed immediately on the cathode side of the deflection coils (Fig. 2, not shown) on the neck of a colour or other C.R.T. with rectangular raster. Waveforms from the scanning system to one or other of terminal pairs 6a-9 or 6b-9, together with modified supply to the horizontal deflection coils, are supplied by circuits (see Division H4).
Patent GB-1440167-A (GB)
Title: Means for 'rogramming integrated read-only memories
IPC: G11C17/14
Filed: 1974-05-03
Abstract: 1440167 Read-only memories COMPAGNIE HONEYWELL BULL 3 May 1974 [4 May 1973] 19629/74 Heading G4A A programmable read-only memory is produced in integrated circuit form from a semiconductor substrate and comprises parallel resistive semi-conductor bands forming row word lines M 3 , M 4  (Fig. 4) connected to parallel conductors forming column bit lines B 5 -B 8  by destructable memory elements F 5 -F 8 , D 5 -D 8  and semi-conductor structures T 1 -T 8 , shunt paths F 1 , F 2  being provided to channel current away from the word lines. Programming is effected by controlling the conductive states of the semi-conductor structures by applying a potential different between the row and column lines at the intersections of which it is required to destroy the memory element, the shunt paths which are parallel to the column lines channelling the programming current to earth. The memory elements may be fusible members or diodes. Switches 30 selectively connect the row and column lines to potentials of +V and earth. As described the bands are formed by growing doped material (46, Fig. 5, not shown) on a silicon substrate (42). The column conductors comprise aluminium wires insulated from the silicon by a layer of silica (48). The shunt channels may be similarly formed. The semi-conductor structures which act as thyristors each comprise an area (52) of P type material, the space between two areas (52, 58), which is of N type material, the area (58) which is of P type material and an area (56) of N type material. The space which also forms part of a word line acts as the control gate.
Patent GB-399629-A (GB)
Title: Improvements in or relating to variable speed gearing
IPC: F16H33/02
Filed: 1932-07-14
Abstract: 399,629. Flywheels ; variable-speed gearing. TREVAN, S. N., 32, Cecil Road. Cheam, Surrey. July 14. 1932, No. 19922, [Class 80 (ii).] A variable-speed gear device acting automatically comprises at least one planetary flywheel F on a spindle a parallel to aligned driving and driven shafts d<1>, d<2> to both of which the flywheel is drivingly connected. In the form shown, a balanced frame f supporting the spindle a is loose and gears p, p<1> of different diameters rigid with the flywheel F mesh with gears s, s<1> fast on the shafts d<1>, d<2> respectively. In another form, the pair p<1>, s<1> is omitted and the frame f is secured to the shaft d<2>. In both these forms the central gears may be replaced by internally-toothed rings meshing with the planet gears outside the latter. A form is derived from the arrangement shown by employing a plurality of smaller flywheel units and adding two loose flywheels connected by internally-toothed rings to the two planet gears. The frame f may have a continuous flywheel rim. The device is adapted for transmitting a torque which fluctuates at its source and is specially applicable for driving vehicles.
Patent GB-243079-A (GB)
Title: Improvements in or relating to shock absorbers, particularly those for use on aircraft
IPC: B64C25/64
Filed: 1924-08-23
Abstract: 243,079. Lobelle, M. Aug. 23, 1924. Buffers and arrangements of springs; non- metallic springs; vibration-dampers. - A shockabsorber, particularly for use on the landing carriages of aircraft, comprises a number of rubber balls b of approximately the same diameter as their cylindrical container a, the balls being compressed by the piston-like end of the plunger e. A helical spring h gives the rubber balls a small initial compression and takes the recoil, while an annular rubber buffer q serves as an emergency stop. The balls act as a vibrationdamper owing to the increasing frictional resistance as the balls exposed against the wall of the container during compression. Streamline fairing r, c may be provided. Each ball may comprise a wound core of tensional rubber strip enclosed in a vulcanized rubber or balata cover.
Patent GB-1093071-A (GB)
Title: Polyester compositions
Inventor: EVERARD HERBERT RONALD
IPC: C08L67/06
Filed: 1964-05-13
Abstract: A composition comprises an unsaturated polyester resin and lead sulphite or zinc sulphite. The resin consists of a solution in an ethylenically unsaturated monomer of a polyester derived from a glycol and a mixture of an a ,b -unsaturated dicarboxylic acid or anhydride and a saturated dicarboxylic acid or anhydride. The resin may contain chlorine compounds, e.g. chlorinated waxes or polyvinyl chloride, or tetrachlorophthalic anhydride may be used as the saturated anhydride, or chlorendic acid in place of the saturated acid.  The viscosity of the composition may be reduced by addition of an organic liquid, e.g. a sulphite, tritolyl phosphate or diallyl benzene phosphonate.  In the examples, the polyesters are derived from (A) diethylene glycol, ethylene glycol, fumaric acid and chlorendic acid, (B) as (A), plus adipic acid, (C) and (D) propylene glycol, phthalic anhydride and maleic anhydride, and (E) as (C) and (D), plus pentaerythritol.  The resin is dissolved in styrene, hydroquinone being used as inhibitor.  Resin (A) is further mixed with methyl ethyl ketone peroxide, a cobalt-containing accelerator, ZnSO3 or PbSO3 and, optionally, resin (B) ethylene sulphite and SiO2. Resin (C) is blended with ZnSO3 or PbSO3, chlorinated wax, antimony oxide, dimethyl phthalate, an organic thixotropic agent and a colbalt-containing accelerator.  Resin (D) is blended with ZnSO3. These blends are used in the production of laminates from glass mat (see Division B5).  In Example 8, doughmoulding compositions comprising resin (D), resin (E), zinc stearate, benzoyl peroxide, a phenolic inhibitor, glass fibres and (i) ZnSO3, (ii) ZnSO3 and CaCO3, or (iii) PbSO3 and CaSO3 as fillers are prepared and may be used to form insulators.ALSO:An article made from glass fibre and an unsaturated polyester resin is coated with a composition comprising zinc sulphite or lead sulphite and a solution in an ethylenically unsaturated monomer of a polyester derived from a glycol, an alpha-beta unsaturated dicarboxylic acid or anhydride and a saturated dicarboxylic acid.  The polyester may be prepared using tetrachlorophthalic anhydride as the saturated anhydride or chlorendic acid in place of the saturated acid, or alternatively the polyester is blended with a chlorinated wax or polyvinyl chloride. Other ingredients of the composition include organic diluents and inorganic fillers (see Division C3).  The coating may be applied to a mould, gelled and partially cured prior to applying the glass fibre reinforced polyester resin to the cured coating.  In this way laminates may be built up (see Division B5).
Patent GB-817850-A (GB)
Title: Gun forearm
IPC: F41C23/16
Filed: 1957-06-25
Abstract: 817,850. Laminates. SULLIVAN, G. C. June 25, 1957 [May 20, 1957], No. 20011/57. Class 140. [Also in Group XXI] A forearm for a gun comprises a tubular member 13 of laminated construction having a core or central layer 10 of low density cellular material, e.g. a foam plastic such as isocyanate, an outer skin 15 of moulded fibre glass and an inner layer 14 of metal foil. Air vents 11 are provided in the forearm. The metal foil 14 reflects heat into the cooling chamber 16 and the layer 10 has good thermal insulating properties. The forearm is moulded with corrugations 17.
Patent GB-327354-A (GB)
Title: Improvements in or relating to machines for making rivets, bolts and the like
IPC: B21G3/00
Filed: 1929-06-29
Abstract: 327,354. Pillans, R. N. A. June 29, 1929. Bolts and rivets. - A blank for a rivet or bolt is cut from the bar 74 by the shear 42, and held in contact with the shear by the spring clamp 65 till it is dropped in the blank receiving slot 20. The pin 1, operated by the cam discs 7, then pushes the blank endwise between the open dies 13, which are afterwards closed to grip the shank by the cam 39. The reciprocating snap 12 then forges the head, the blank end-supported during this operation by the pin 1, which is then bearing on the sector 9 held between the discs 7. The pin is then withdrawn, a second blank falls into the slot 20, and the return of the pin 1 then pushes the headed rivet from between the dies 13, which are again open, the snap 12 also having been withdrawn. An arm 53, positioned by the handwheel 61, controls the length of bar cut off, and is swung upwardlv by the shear 42, on its forward stroke, returning to its position on the rearward stroke by the action of the spring 57.
Patent GB-640277-A (GB)
Title: Error compensating system for radio direction finders
IPC: G01S3/10
Filed: 1947-07-25
Abstract: 640,277. Radio direction - finding. STANDARD TELEPHONES & CABLES, Ltd. July 25, 1947, No. 20089. Convention date, Aug. 1, 1945. [Class 40 (vii)] An adjustable apparatus for correcting quadrantal error in a fixed crossed-loop radio direction finder 1, 2 comprises two variable inductance-elements 5, 13, one of which is shunted across a number of turns of one loop 2 and is of sufficient impedance to correct the error, and the other of which is connected in series with the turns of loop 2 and is of sufficient impedance to compensate for the relative change in phase between loops 1 and 2 caused by the shunt element; the two elements being coupled together for simultaneous adjustment so that as the impedance of one increases that of the other decreases, and vice versa. The impedances are made adjustable in steps bv pairs of contacts 10, 11 and 17, 18 which are connected by bridging pieces 12 and 19 respectively. The apparatus is disposed within the base support of the shields for the loops, Fig. 2 (not shown), the pairs of contacts being mounted in two diametrically opposed semicircles on an insulating plate in which is pivoted a spindle carrying a support for the bridging pieces. Beneath the plate are located the inductance elements. In an alternative construction, Figs. 3 and 4 (not shown), one series of contacts 11 are dispensed with, the lead 8 being connected directly with bridging piece 12. In addition, contacts 18 may be eliminated by a similar direct connection with bridging piece 19. The embodiment shown, with nine tappings into each inductanceelement, provides a correction for every 5 degrees of bearing in each quadrant. More or fewer tappings may provide correction at intervals greater or less than 5 degrees.