baber/WOPTO huggingface dataset:
Patent GB-1011857-A (GB)
Title: Improvements in or relating to electric power modulators
IPC: H01F29/14
Filed: 1962-05-22
Abstract: 1,011,857. Transformers. BASIC PRODUCTS CORPORATION. May 22, 1962 [June 1, 1961], No. 19655/62. Heading H1T. A high reactance transformer has the output of its secondary winding 18 varied by means of D.C. control windings 19, 20 at least one shunt air gap 15 or 16 being provided. The primary and secondary may each be wound on each of the side legs and the upper portions of the side legs may be bifurcated, the D.C. windings being arranged thereon. Fig. 2 shows part of an arrangement giving a constant output voltage 32 with a varying line voltage 24, the variable voltage secondary winding 28 overcoming the voltage of primary extension winding 27 and being reducible to a negligible value when full control current flows through the D.C. windings 29, 30.
Patent GB-1463496-A (GB)
Title: Screw-threaded fasteners
IPC: F16B23/00
Filed: 1973-04-25
Abstract: 1463496 Screws D CHART 23 April 1974 [25 April 1973] 19658/73 Heading F2H A screw (Figs. 1B, 6C) is provided with an annular castellated portion 2 and a central cylindrical core 3 which extends within and beyond the castellated portion 2 to prevent turning of the screw by a screwdriver applied diametrically across the castellations. The screw can only be turned by a specially-shaped mating tool. Any number of castellations may be used, and one or more may be wider and/or higher than the rest. As shown in Fig. 6C, the screw may have an annular shroud 6 encircling the castellated portion 2 and which may be fast with, or rotatable relative to, the portion 2. The screw may be made of metal or plastics and can be made from two welded or press-fitted parts as in Figs. 3 and 4 (not shown).
Patent GB-1306198-A (GB)
IPC: H02H7/22
Filed: 1971-06-09
Abstract: 1306198 Measuring current and temperature in a power cable INDUSTRIE PIRELLIE SpA 9 June 1971 [11 June 1970] 19660/71 Heading G1N [Also in Division H2] Apparatus for detecting the ratio of the conductor current in an electric power cable 12 relative to the maximum conductor current which is permissible without a maximum conductor temperature for said cable being exceeded comprises a plurality of thermistors or thermocouples T 1-n  on the cable outer surface, a selector 22 providing a signal S 1  representative of the higher or highest temperature, an electronic logic circuit 16 which translates S 1  into a signal S 2  representative of the maximum permissible conductor current for the cable 12 at the prevailing temperature and crossed-coil comparator 20 which compares S 2  with signal S 3  from a current transformer 18 sensing instantaneous conductor current and forms the ratio of S 2  and S 3 . The comparator is arranged to actuate an alarm 26 when the ratio is of a predetermined magnitude. A recorder 28 has a pair of ammeters of which the pointers drive writing devices and which are energized by the ratio signal from the comparator and by the signal S 3  respectively. Alternatively the translating means 16 may be a potentiometer having non-linear resistance and a servo-control mechanism.
Patent GB-185291-A (GB)
Title: Improvements in louvre ventilators
IPC: E06B7/084
Filed: 1921-07-22
Abstract: 185,291. Wills, C. M. July 22, 1921. Valves.-A louver ventilator applicable to the transom of a door, window &c., and arranged to prevent vision through it, comprises a series of pivoted louver members each consisting of an upright member 17, members 18, 18<1> at right-angles to it, and members 19, 19<1> at an angle to the last, so arranged that in the closed position shown in dotted lines in Fig. 1 the flat faces of adjacent members 19, 19<1> abut upon each other. In the open position the members 18, 18' lie in a plane parallel to the frame 10, 11, 12, 13 in which the louvers are held. The louvers are simultaneously operated by a longitudinally sliding plate 41 covered by a dust plate 22 and having notches 24 engaging arms 20 formed on the lower ends of the louvers and pivoted at 16 to the lower frame member. The plate 41 is moved by a pivoted link 26 eccentrically attached to a plate at the upper end of a rod 29. which is rotated by a handle 32.
Patent GB-1332778-A (GB)
Title: Sewing machine for making welted pockets
IPC: D05B3/10
Filed: 1972-04-28
Abstract: 1332778 Sewing machine NECCHI SpA 28 April 1972 [22 June 1971] 19829/72 Heading D1G A sewing machine for making welted pockets comprises a work plate (25, Fig. 2 not shown) slidable along a predetermined path in the bed 11, a work clamp 28 mounted on the work plate for fastening a piece of main fabric thereto, a centre blade 31 and two side pressers 30, 30' for folding a fabric patch and clamping the latter on to the main fabric and linkages for moving the side pressers transversely to the blade, the linkages each including a lever arm 51 adjustable in effective length to select the side presser stroke. As shown the lever arms 51 have arcuate slots 50 each engaged by bull ended rods 47 connected to one arm (45, Fig. 2 not shown) of a bell crank lever 43 the other arm 44 of which carries a rod 38 engaging a groove (37) in a block 35 connected by members 33, 32 to a respective presser member. The centre of each slot is chosen to coincide with ball joints 46 when the side pressers are in their inner position which thus remains unvaried when the connections at 72 are moved along the slot 50 to vary the side presser stroke. The arrangement of the folding device is disclosed in Specification 1277517; the present application describes a pneumatically operated system (Fig. 3 not shown) which controls cylinder 61 operating linkage 60-51 actuating the side pressers and cylinder 75 which operates linkings 76-82 raising and lowering the centre blade 31. (For Figure see next page)
Patent GB-151786-A (GB)
Title: An improved differential speed reducing gear
IPC: F16H1/32
Filed: 1919-08-13
Abstract: 151,786. Archer, C. F. Aug. 13, 1919. Epicyclic toothed gearing comprises double planetary gears F, G mounted loosely upon oppositely-directed eccentrics D, E upon a driving-shaft C, the arrangement being balanced to dispense with the balance-weights described in Specification 26198/10. The gears F, G mesh with internal gears L on a fixed member A, and with internal gears K on elements H, I, which are driven at greatly reduced speed. The elements H, I may be separate, or geared together, or they may be formed in one piece situated between the epicyclic trains.
Patent GB-1387944-A (GB)
Title: Textured yarn and method for its manufacture
IPC: D02G1/00
Filed: 1972-04-28
Abstract: 1387944 Knit-deknit crimped yarns ATELIERS ROANNAIS DE CONSTRUCTIONS TEXTILES 28 April 1972 [29 April 1971] 19895/72 Headings D1F D1S and D1W A method of producing a textured yarn comprises knitting an undrawn or partially drawn thermoplastic continuous filament yarn into a tubular knitted fabric, drawing the fabric without breaking the filaments, subjecting the drawn knitted fabric to a further mechanical deformation which is eventually set and deknitting the fabric. The knitted fabric may be drawn longitudinally e.g. between rolls 16, 17 and 18, 19 or transversely e.g. by means of a tenter. The knitted fabric may be subjected to an additional heat treatment preferably during the drawing stage e.g.  by means of a steam heated rail 20; or may be heated after drawing to effect an overstretch or relaxation on the fabric. The fabric is preferably subjected to progressive tension between a fabric roll 10, rolls 13, 14 and rolls 16, 17. Prior to or simultaneously with the drawing of the fabric, the yarn may be dyed, e.g. a dye liquor 21 may be placed in the nip of rolls 13, 14. The continuous filaments are suitably polyamide, polyester, polyolefin or polyacrylonitrile filaments. In one example, a fabric is knitted from two feeds of different  yarns, the two yarns being deknitted together and forming a composite yarn of low twist. The yarn of the invention is characterised in that the filaments have at least one crimp of serrated type with marked cusps, the molecular structure in the cusps being different from that of the portions of yarn connecting two adjacent cusps, and a secondary crimp superimposed on the serrated type crimp by subjecting the knitted drawn fabric to a passage through a gear-crimping mechanism.
Patent GB-818450-A (GB)
Title: Microwave diplexer
IPC: H01P1/213
Filed: 1955-07-08
Abstract: 818,450. Phase-shifting networks. SPERRY RAND CORPORATION. July 8, 1955 [July 9, 1954], No. 19904/55. Drawings to Specification. Class 40 (8). In a waveguide diplexing arrangement, two signals of different frequencies are applied together at a single input and appear separately at two outputs. Alternatively, two signals of different frequencies may be fed into the arrangement at separate inputs so as to leave at a single output. The arrangement consists of two hollow, rectangular section waveguides which are connected together at two positions along their length by hybrid directional couplers. A non-reflective frequency-sensitive phase shift element, connected between the couplers in one waveguide, produces a lag of 180 degrees for signals of one frequency and zero lag for the other. In the second waveguide an adjustable piston is fitted for equalizing the path lengths in the two waveguides between the couplers. The phase shifter comprises a hybrid directional coupler having two conjugate pairs of arms and a pair of similar cavity resonators connected to one conjugate pair of arms. The resonant frequency of the cavities is selected midway between the diplexed frequencies and the cavities may be tunable to permit changing of the diplexing frequencies. An alternative form of phase shifter consists of a waveguide filter section having a varying phase shift as a function of frequency, such as an m-derived bandpass filter. Specification 817,569 is referred to.
Patent GB-566681-A (GB)
Title: Improvements in and relating to high tension switches of oil break type
IPC: H01H33/75
Filed: 1943-11-29
Abstract: 566,681. Oil-break switches ; electrically-released switches. ELECTRIC TRANSMISSION, Ltd., and DANNENBERG, K. Nov. 29, 1943, No. 19925. [Class 38 (v)] In a low oil-content switch in which the arc is quenched by pressure produced in a restricted space in an oil container to which the movable contact-rod has access through an orifice which it substantially blocks, the orifice 10 is located in a partition 6 separating the arcing-space 4 from an oil-collecting space 5 into which the oil and gas is forced when the orifice is uncovered, and the contact-speed is such as to ensure arc-extinction prior to such uncovering. A further barrier 7 may separate space 5 from an upper space vented to atmosphere. The normal oil-level for the switch-closed position is shown at x. In the switch-open position, the tip of contact 13 is visible through an armoured glass sheath 14. The contact speed should not exceed 6, and is preferably 4, feet /sec. In Fig. 2, all phases constructed according to Fig. 1, except for sheaths 14, are retained closed against spring-action 16 by latches 29 engaging dogs 30 on the rods 13, each latch 29 being connected to a common cross-bar 31 bearing against the right-hand edge of a rod 26 for each phase. The rods 26 are individually movable downwards and outwards by means of levers 28, 24, the latter being actuated by striker pins 23 of fuses 22, such as described in Specification 481,299 or 541,562, [both in Group XXXVI].
Patent GB-293702-A (GB)
Title: Improvements in processes for extracting benzene hydrocarbons from gases produced by carbonisation
IPC: C10K1/18
Filed: 1928-07-09
Abstract: 293,702. Still, C. July 8, 1927, [Convention date]. Materials for purifying.- Benzene hydrocarbons are extracted from coal gas by washing with oil containing naphthalene in such proportion that practically no naphthalene is absorbed from the gas. The wash oil is distilled for the recovery of the light hydrocarbons, and any naphthalene carried over is separated by fractionation and returned to the wash oil.
Patent GB-1100733-A (GB)
Title: Method and apparatus for wrapping slab-shaped articles
IPC: B65B11/10
Filed: 1966-05-05
Abstract: 1,100,733. Wrapping articles. " SAPAL " SOC. ANON. DES PLIEUSES AUTOMATIQUES. 5 May, 1966 [7 July, 1965], No. 19943/66. Heading B8C. An article such as a chocolate tablet 1 is enclosed in a strip of foil 4 around three sides as it is advanced across a support table 10, whereupon the free ends of the strip are mated to form a flap, which is folded against a side of the article to extend in a direction opposite to the article movement direction. As described, the tablet 1 is moved forward by a pusher 7 into the path of the foil 4, pre-folded at rightangles, on to a fixed support 11, whereupon the upper projecting end of the foil is folded downwards by a pusher 17. Simultaneously, the lower projecting end of the foil is pulled downwards by a suction cup (18), after which the free ends of the foil are bonded together between a heated hammer 13 and a heating element 12 fixed on the support 11. The tablet is then moved forward by the pusher 17 to cause the flap so formed to be laid flat on to the underside of the tablet. In an alternative embodiment, part of the free ends of the foil 4 are compressed together by two movable hammers (13, 20) (Fig. 9, not shown) whilst the extreme ends of the flap are held horizontal by a roller (23), which is then rotated to fold up the extreme ends on to the compressed part of the flap.
Patent GB-498864-A (GB)
Title: A process for the preparation of alumina
IPC: C01F7/0693
Filed: 1937-07-20
Abstract: In a process for the production of alumina wherein aluminous ore is treated with caustic soda, the residual red mud is mixed with limestone and coal dust and treated in an electric furnace. A slag comprising calcium and sodium aluminates is formed and floats on a bath of cast iron.  The slag is treated with soda and is transformed to sodium aluminate which is returned to the normal process for the production of alumina.  Pyrites ashes may be mixed with the red mud to increase the yield of iron which may contain about 7 per cent silicon, a small percentage of titanium and less than 1 per cent of sulphur.  The Specification as open to inspection under Sect. 91 is not limited to treatment in an electric furnace.ALSO:Cast iron containing about 7 per cent of silicon, a small percentage of titanium and less than 1 per cent of sulphur is obtained in a process for the production of alumina, wherein aluminous ore is treated with caustic soda, the residual red mud is mixed with limestone and coal dust and treated in an electric furnace.  A slag comprising calcium and sodium aluminates is formed floating on a bath of the cast iron. Pyrites ashes may be mixed with the red mud to increase the yield of iron.  The Specification as open to inspection under Sect. 91 is not limited to treatment in an electric furnace.  This subject-matter does not appear in the Specification as accepted.
Patent GB-936759-A (GB)
Title: Improvements in and relating to brakes
IPC: C10M169/00
Filed: 1961-06-05
Abstract: A hydraulic brake fluid component comprises at least 90% by weight of a poly(oxyethylene oxy-1,2,propylene) glycol mono methyl or ethyl ether of 175 to 325 average molecular weight and a boiling point of at least 205 DEG C. in which there is present an average of 3 to 5 oxyalkylene groups per molecule and in which the oxyethylene and oxy-1,2,propylene are each present in a proportion of 35-65% by weight, together with either a C2-3 alkylene glycol or a C4-6 dialkylene glycol or their various mixtures.  Optional additives (0,2 to 2%) specified are amines, e.g. mono- and di-butyl and amyl amines, phenyl alpha naphthylamine, dioctylamine and their salts with boric or dilinoleic acid; borax, potassium tetraborate, diphenylol propane, polymerized trimethyldihydroxy quinoline, alkyl phenols, polyalkylpolyphenols, and styrenated phenols.  Specification 616,256 is referred to.
Patent GB-828645-A (GB)
Title: Improvements in friction-driven screw presses
IPC: B30B1/18
Filed: 1957-06-26
Abstract: 828,645. Screw presses. ETABLISSEMENTS GRIMAR. June 26, 1957 [Nov. 9, 1956], No. 20138/57. Class 87(2). The flywheel 1 of a friction-driven screw press, in which the flywheel moves axially with the screw spindle 4 and the cross-head 18, is driven alternately in either direction by two vertical drums 22, 23 which are fixed in the axial direction, and have an axial length in that direction at least equal to the travel of the flywheel. The spindles 26, 27 of the drums are carried by double-armed levers pivoted at 30, 31 and connected at their other ends through rods 34, 35 to a doubleacting piston 36 which is constrained in a neutral position in its cylinder 37 by opposed springs 40, 41. The drums are freely rotatable on their spindles and are belt-driven from motors 49, 51. The screw spindle 4 is guided in its travel by an upward extension 12 which passes through a bore 13 and the spindle has keyed. to it, above the cross-head 18, a brake pulley 16. The cross-head carries a spindle 55, Fig. 5, on which are pivoted two jaws 53, 54 enclosing the brake pulley 16 and normally closed thereon by a spring 62 acting on a piston 58 in a cylinder 56. The operation of two switch buttons 88, 89, or a pedal switch 90, Fig. 6, causes electrically controlled valves to admit pressure fluid to the cylinder 56 and, through a port 43, to the left of the piston 36 in the cylinder 37, whereby the brake is released and the rotating drum 22, is pressed against the flywheel 1. The cross-head 18 is therefore driven downwards on its pressing stroke. At the bottom of the stroke a cam 75, attached to the cross-head, actuates a limit switch 73 which causes a reversal of fluid pressure from the left to the right of the piston 36, the drive of the flywheel being thus transferred to the drum 23, causing the cross-head to rise. At the top of the stroke a limit switch 71 is operated, causing the release of fluid pressure from the cylinders 37, 56 and so resulting in the return of the piston 36 to its neutral position and the re-application of the brake jaws 53, 54, the spindle and flywheel thus becoming immobilized. The positions of the limit switches 71, 73 are adjustable on a bar 68. The force of the blow delivered by the press may be controlled by altering the position of a circuit breaker 79 on a bar 76. If the circuit breaker 79 is raised a cam 82 on the crosshead opens it during the dow-nstroke and results in earlier release of the fluid pressure from the cylinder 37 and therefore earlier release of the drum 22 from contact with the flywheel, thus lessening the force of the blow. The cam and circuit breakers carry pointers which indicate their positions on a scale 81.
Patent GB-1329507-A (GB)
Title: Tank cleaning machine
IPC: B05B3/04
Filed: 1971-04-19
Abstract: 1329507 Tank cleaning machine SYBRON CORP and CLOUD CO 19 April 1971 [18 May 1970] 20207/71 Heading A4F A tank cleaning apparatus comprises a stationary housing 12, first and second rotating housings 14, 16 rotatable about mutually perpendicular axes, the second carrying offset nozzles and rotating in response to rotation of the first about the stationary housing, the first rotating housing being driven from an impeller (57) Fig. 2 (not shown) in a passage of the stationary housing via a train 92 of aligned and joined spur and pinion gear assemblies 101-105 on two shafts 93, 94 so that a ring gear 114 on the first rotating housing rotates more slowly than the impeller. The second rotatable housing, mounted on the first rotatable housing is driven by rotation of the first rotatable housing by a pair of bevel gears (23, 47) Fig.2 (not shown) mounted respectively on the stationary housing 11 and the second rotatable housing 16. A friction clutch (51) permits the rotation of the second rotatable housing when no fluid is being passed and allows bevel gear (47) to rotate independently of the housing if rotation of the second housing is prevented whilst fluid is being passed. Reference has been directed by the Comptroller to Specification 1096713.
Patent GB-699986-A (GB)
Title: Improvements relating to telephone systems
Inventor: GRINSTED WILLIAM HERBERT
IPC: H04M1/76
Filed: 1951-08-29
Abstract: 699,986. Exchange systems. SIEMENS BROS. & CO., Ltd. Aug. 29, 1952 [Aug. 29, 1951], No. 20339/51. Class 40 (iv). A feeding bridge circuit, used for feeding transmitter-energizing direct current to subscribers' lines, includes means, individual to the circuit, for generating the unidirectional E.M.F. which produces the flow of transmitterenergizing direct current to a subscriber's line connected to the circuit, and also includes means for automatically adjusting this E.M.F. in dependence upon the magnitude of the line resistance of a subscriber's line so connected. As shown, an outgoing repeater circuit in an automatic exchange has incoming terminals LT, to which a calling line is connected through one or more selectors, and outgoing terminals JT which are connected to an associated junction. An alternating current supply of 700 cycles per second is connected to terminals ST and feeds, through a full-wave rectifier SR and a line relay A, direct current to the calling line. The magnitude of the line resistance affects the potential difference between the output terminals of the rectifier SR and this is used to control the current supply by means of saturable chokes CHA, CHB. The degree of control exercised by the chokes may be adjusted by means of a variable resistance RA.
Patent GB-222274-A (GB)
Title: A vacuum tube discharging rays
IPC: A61N5/00
Filed: 1923-08-13
Abstract: 222,274. Winkelmann, L. Aug. 13, 1923. R÷ntgen-ray and vacuum tubes.-Apparatus for the treatment of diseases of the blood and circulatory systems consists of a discharge tube containing a radio-active substance in contact with the electrode or electrodes. Fig. 1 shows one form of the apparatus, comprising a cylindrical tube a, electrodes b, c, and a filling f of radio-active material in granular form. Fig. 2 shows a form of the apparatus suitable for local application, consisting of a vacuum bulb g<4>, an electrode g", a filling of granular radio-active material g<8>, a handle g<2>, a vacuum g<3> in the handle, and wire gauze g<5> forming a partition between the bulb g<4> and the space g<3>.
Patent GB-148792-A (GB)
Title: Improvements in or relating to viscosity pumps
IPC: F04D5/00
Filed: 1920-07-10
Abstract: 148,792. Weise S÷hne, Lawaczeck, F., and Noeggerath, J. E. Aug. 29, 1916, [Convention date]. Worm pumps.-A viscosity pump has a worm c working in a hollow cylinder and the grooves c' for the passage of the fluid have a width which is at least seven times the depth. The groove may have sections b<1>, b<2> of different depths as shown in Fig. 2, the width of each section being at least seven times its depth. In other modifications the grooves have a triangular section, or a curved section as shown in Fig. 5. Where the depth of grooves varies, the lesser depth is arranged on the side of higher pressure.
Patent GB-791138-A (GB)
Title: Improvements in or relating to means for use in the construction of tile drainage or like liquid flow systems
IPC: E02B13/02
Filed: 1955-07-16
Abstract: 791,138. Drainage. DOWLING, T. F., VERNON, D., JONES, D., and EDWARDS, C. May 31, 1956 [July 16, 1955], No. 20651/55. Class 33. A block forming an outlet from a drain system into an open ditch comprises a platform 13 with an arcuate recess 14 for receiving the last tiles of the drain and a headpiece 10 with hole 15 aligned with the tiles. The block is received in a crutch in the upper part of an apron 17 bedded into the bottom and sloping side of the ditch, lugs 16 on the block headpiece bearing against the apron to position it correctly and water from the drain runs down a concave channel 20 in the face of the apron. A filler block 21 may be used to close the top of the crutch-shaped opening in the apron. All the elements are preferably made in reinforced concrete. A flap valve or a grating may be fitted in the opening 15 to prevent ingress of vermin.