baber/WOPTO huggingface dataset:
Patent GB-716087-A (GB)
Title: Improvements in and relating to insulation for electrical conductors
IPC: H01B3/44
Filed: 1952-10-14
Abstract: A synthetic resin insulating composition comprises 45 to 65 per cent. of polymerized vinyl halide resin, such as polyvinyl chloride or a vinyl chloride-vinyl acetate copolymer, 18 to 22 per cent. of octyl decyl phthalate, 8 to 12 per cent. of chlorinated paraffin wax, up to 20 per cent. of inert filler such as clay or whiting and 5 to 7 per cent. of a stabilizer such as tribasic lead sulphate, basic lead silicate sulphate or dibasic lead phosphate.
Patent GB-1308962-A (GB)
Title: Optical spatial frequency filter
IPC: G02B27/28
Filed: 1970-05-28
Abstract: 1308962 Optical spatial frequency filter R C A CORPORATION 28 May 1970 [3 June 1969] 25767/70 Heading G2J [Also in Division H4] An optical image transmission system, Fig.1 (not shown), includes in its optical path a spatial frequency filter 19, Fig.2, comprising birefringent elements 22 and 23 of different thickness with a quarter-wave plate 25 between them, so that a plurality of mutually displaced images of a transmitted image are reproduced. The resolution and hence the spatial frequency are thus cut; the system may be used for reducing the resolution of the chrominance signal in a colour television system. There may be further birefringent elements 24, with a quarter-wave plate between each pair of elements, all the components being cemented to-  gether to form an intergral structure. Preferably element 23 is twice, and element 24 four times, the thickness of element 22.
Patent GB-253776-A (GB)
Title: Improved instrument for use in obstetrics
IPC: A61M29/02
Filed: 1925-10-15
Abstract: 253,776. Ellis, G. B., (Burger Ysatfabrik, J.). Oct. 15, 1925. Obstetric and uterine appliances; pessaries.-A laminaria pencil is made of curved formation, preferably such as to conform to the shape of the genital canal, and is tapered at its leading end to facilitate introduction into the cervix. The Figure shows a curved pencil a sealed in a curved glass containing tube b and provided with a cord d to facilitate its removal. A piece of cotton wool e or the like prevents the pencil from moving in the tube.
Patent GB-389487-A (GB)
Title: Improvements in or relating to a method for the production of upholstery, mattressesand the like articles of resilient nature
Filed: 1931-09-15
Abstract: 389,487. Compound sheet materials. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, ANODE RUBBER CO., Ltd., 10, Lefebvre Street, St. Peter's Port, Guernsey, and GORHAM, W. G., Fort Dunlop, Birmingham. Sept. 15, 1931, No. 25821. [Class 140.] A compound material for use in upholstering consists of a block of sponge rubber directly secured to non-felted layers of resilient fibrous material such as rubbered hair. The fibrous material can be sprinkled on a rubber froth in a mould prior to its setting, the fibres then being sprayed with an aqueous dispersion of rubber and the whole mass subsequently vulcanized. Alternatively a block of sponge rubber can be treated on .one face with rubber solution and a block of rubbered fibrous material applied thereto, or loose fibres can be applied and sprayed in situ as in the first example. Specifications 219,635, 290,313, 332,525, and 332,526, [all in Class 70, Indiarubber &c.], are referred to.
Patent GB-329919-A (GB)
Title: Improvements in luminous monogrammic publicity devices
IPC: G09G3/00
Filed: 1929-08-24
Abstract: 329,919. Duchard, H. M. May 6, 1929, [Convention date]. Monogrammic signs. - In flashing signs of the type in which the lamps, arranged to form a uniform field, are selectivelv illuminated under the control of a driven perforated strip so as to present the appearance of moving letters and displace words along the field, friction is reduced by the provision of an endless metal band 8 moving with the strip. The consequent reduction in stress allows the use of a smaller strip. The metal band may form one pole of the feed circuit. being connected thereto through the pulley and external brushes, or as shown a fixed upper plate 11 having guiding flanges 11a may be added. In the compact form shown, the lamps are arranged on the front of the cabinet housing the selecting mechanism and the perforated strip 4, which is of insulating material, is made endless and is passed round suitably disposed rollers 17. The lamps are each connected to individual spring contactors 2, embedded in a fixed plate 1 of ebonite or other insulating material, and adapted to press through the perforations in the strip to contact with the endless metal band 8 and complete circuit through the plate 11. One of the pulleys 9 is driven through reduction gearing 20 by a motor 7, the strip 4 and band 8 being pressed together onto the pulley by a spring- pressed pulley 15. The surfaces 8, 11 may be lubricated or provided with rollers. In a modification, the strip 4 is not endless, and the device is separate from the field of lamps.
Patent GB-1301130-A (GB)
Title: Electrical rat exterminators
Inventor: RUSSELL LESLIE EDWIN
IPC: A01M23/38
Filed: 1970-05-29
Abstract: 1301130 Electrocuting rats L E RUSSELL 4 May 1971 [29 May 1970] 25882/70 Heading AIM  A rat exterminator comprises a housing 10, Figs. 3 and 4, having two conductive metal platforms 21 spaced apart in the same horizontal plane and carried by insulating supports, means connecting the platforms to an electrical mains supply and a side entrance 17 to the housing. An extension 19 of the housing has a front entrance 20 and the housing has a hinged lockable lid. Two similar housings and extensions may be combined with the extensions at opposite ends.
Patent GB-387745-A (GB)
Title: Improvements in or relating to composite toilet articles
IPC: A45D24/24
Filed: 1931-09-16
Abstract: 387,745. Containers for powders &c. REYNOLDS, F. B., 67, Hatton Garden, London. Sept. 16, 1931, No. 25941. [Classes 18 and 66.] A carrier for a comb is provided with compartments for the accommodation of toilet requisites, which may be in solid, liquid or powder form. As shown in Fig. 6, the carrier comprises a hollow member 3 divided by parti. tions 6 into compartments 9, 10, 11 and provided with arms 2 embracing the back of the comb either permanently or detachably. The carrier is preferably formed of metal, and may bedecorated by enamel. The compartment 9 contains a lip stick 15 slidably mounted in a holder 12 resiliently engaging in the compartment, the compartment 10 contains a liquid 20 such as perfume and is fitted with a sprinkler 21 or a discharge valve, and the compartment 11 contains face powder and is fitted with an openended receptacle 16 the outlet of which is controlled by a spring-loaded ball valve 17. In a modification, the carrier is provided with two compartments only, one containing a lip stick and the other face powder.
Patent GB-874656-A (GB)
Title: Improvements in or relating to cross polarized dual feeds
IPC: H01Q19/13
Filed: 1957-08-16
Abstract: 874,656. Aerials. ANDREW CORPORATION. Aug. 16, 1957 [Oct. 10, 1956], No. 25954/57. Class 40(7) [Also in Group XL(b) ] A feed element for an aerial, e.g. a parabolic aerial, comprises outer, intermediate, and inner conductors extending into a cavity having a surface of revolution and an open end which faces the directive element, the cavity and the conductors being coaxial. The feed element will receive and/or transmit cross-polarized signals on the same or different frequencies simultaneously. In one embodiment a cavity member 14, Figs. 1 and 2, has isolating fins 21, 22 mounted on the outer conductor 13 of a feed line which consists of  three conductors, 11, 12, 13. The member 17 is transparent to the waves radiated or received by the aerial and is placed at the focal point of the reflector or lens. Tuned pairs of slots 24, 25 and 27, 28 are provided in the outer conductor, one pair being in the front part 18 and one in the rear part 20 of cavity 14. The intermediate 12 and inner 11 conductors of the feed line are shaped as shown, connections 29 and 26 connecting the respective conductors to the outer conductor 13. The cavity parts 18 and 20 may be tuned to the same or different frequencies and the radiations emitted will be cross polarized due to the positioning of the tuned slots. The slots may be loaded by dipoles for impedance matching. In a second embodiment the feed element has no isolating fins. In Figs. 8 and 10 the outer conductor 13 has a pair of slots 38, 39, and the intermediate conductor 12 a pair of slots 43, 44. Loading dipole elements 34, 36 are provided on the intermediate conductor and mounted in insulators 35, 37, and dipole elements 40, 41 are mounted direct on the outer conductor 13. In a further embodiment, Fig. 12, the outer conductor has slots 51, 52 loaded with dipole elements 45 (only one shown), and a further pair of slots 47 (only one shown) with associated dipole elements 49, 50. The slots 51, 52 extend to the end of the outer conductor. In the last two forms of feed element each conductor is connected to its adjacent conductor.
Patent GB-629235-A (GB)
Title: Improvements in or relating to the construction of parts of combustion power engines, especially motor engine pistons, exposed to high temperatures
IPC: F02F3/10
Filed: 1945-10-05
Abstract: 629,235. Pistons; cylinders. PETERSEN, O. Oct. 5, 1945, No. 26040. Convention date, Dec. 15, 1943. [Class 122(i)] [Also in Group XXVII] The parts of an internal combustion engine such as the top of the piston which are exposed directly to the combustion flame are coated with hard chromium plating, preferably to a thickness of from 0.025-0.15 mm., hard chromium plating being deposition of the plating directly on to the base metal, without the interposition of nickel or copper, and providing a hard porous surface incapable of taking a polish.
Patent GB-584359-A (GB)
Title: Improvements in and relating to multi-flame gas burners
IPC: F23D14/20
Filed: 1944-12-29
Abstract: 584,359. Perforated tube burners. FRIEDMAN, L. Dec. 29, 1944, No. 26075. [Class 75 (i)] A multiflame non-aerated gas burner comprises superposed sets of burner tubes, each set being disposed in a single plane and at an angle to the tubes of another set. In Fig. 1 the main gas distributing pipe 11 supplies an upper set of parallel burner tubes 12 through distributing pipes 13 and a lower set of burner tubes 14 arranged at right angles to the tubes 12. The burner tubes and distributing pipes may be connected by pressure balancing tubes. Fig. 5 shows a set of circular burner tubes 19 arranged above a set of radial tubes 18, all connected to a distributing pipe 11. Fig. 7 shows superposed sets of burner tubes 23, 24, 25, each set being at right angles to one side of a tubular frame 20, 21, 22 forming the gas distributing pipe. The burner tubes may be flattened where they cross to diminish the distance between the flame levels.
Patent GB-729832-A (GB)
Title: Roller bearings
Inventor: SHERWEN THEO
IPC: F16C19/36
Filed: 1952-10-17
Abstract: 729,832. Roller bearings. LISTER & CO., Ltd., R. A. Oct. 19, 1953 [Oct. 17, 1952], No. 26147/52. Class 12 (1). A bearing, for imparting relative rotational freedom to machine parts 1, 2 about a substantially vertical axis, comprises a pair of sheet metal annular races having oppositely facing inclined concave faces 4, 6 and a number of rollers 8 with curved bearing surfaces maintained in spaced relationship and inclined between the discs on stub axles. The spacing means may comprise a ring 10, Fig. 2, of stiff wire to which the stub axles 9 are secured by soldering, welding or brazing. Alternatively, the stub axles 9 are formed as inwardly bent extensions of arcuate lengths of wire 10 secured together as shown in Fig. 3. The rollers have the general shape of spinning tops and may be made of nylon or other suitable plastic material. The invention is particularly applicable to a churn cooler.
Patent GB-1285308-A (GB)
Title: Tape player having an automatic tracking control circuit
IPC: G11B15/467
Filed: 1971-04-19
Abstract: 1285308 Automatic speed circuit AMPEX CORP 19 April 1971 [6 April 1970] 26288/71 Heading G3R In an oblique scan video tape player the speed of the capstan 12 is varied according to a periodically varying electric signal thus applying to the signal taken from the rotating heads 11 an amplitude modulation which is detected and compared with the electric signal to provide an error signal to correct the speed and phase of the capstan so that the rotating heads are exactly centred on the oblique tracks 18. The capstan motor 22 is controlled by a servo 23 which as usual controls the speed and phase of capstan 12 in accordance with the outputs of a tachometer 37 coupled to the rotating head and an auxiliary head 33 reading a synchronizing signal on the tape. The output of a signal source 21 is also supplied to the servo to vary periodically the speed of the capstan; its frequency is below the audio spectrum so as not to affect the sound signal from a second auxiliary head 42 reading the sound track on the tape. The video signal which is derived from the rotating heads by a switching circuit 25 and which comprises a frequency modulated carrier is applied to a limiter 26 to remove the amplitude modulation before proceeding to the video circuits (not shown) and to an amplitude detector 27 the output of which is fed to a band pass filter 28 tuned to reject all but the frequency of the signal source 21. When the heads are centred the frequency of the modulation is twice the frequency of source 21, Fig.2B; when the heads are displaced to the edge of the tracks 18 the modulation frequency is equal to that of source 21, Figs. 2C and 2D. Thus the level of the fundamental frequency passing through filter 28 represents the phase error; its phase in relation to the source 21 represents the sign of the error. The error signal thus derived is applied to modify the phase of the signal from the tachogenerator 37 to servo 23, Fig. 5 (not shown) or that of the signal from the synchronizing head 33. If the signal from head 33 should be lost the above arrangement still permits the tape to be replaced in correct synchronism. Two circuits for comparator 31 are described, Figs. 4, 6 (not shown).
Patent GB-694127-A (GB)
Title: Improvements in ventilating fans
Inventor: DUNCAN ANGUS WELLESLEY
IPC: F04D29/52
Filed: 1950-10-27
Abstract: 694,127. Ventilating-fans. MINING ENGINEERING CO, Ltd. Oct. 4, 1951 foct. 27, 1950], No. 26305/50.. Class 137 [Also in Group XXVI] The delivery from a fan 1 of the type normally used for forcing air through a duct of varying length, for use e.g. in a mine, is controlled according to the length of duct used by adjusting the air flow which is available at the intake side of the fan. The fan 1, having a propellor 3 on a shaft 4, is mounted centrally in a casing 2, an extension 5 of the casing accommodating a pair of adjustable vanes 6, 7 mounted in the air-intake opening. The vane 6 is secured by pins 12 to a spindle 8, the other vane 7 being mounted on sleeve members 13 rotatable on the spindle 8. The latter and the lower sleeve member 13 extend through the casing 2 and are connected to levers 14, 15 which are pivotally connected by links 16, 17 to a bridle 18. The bridle 18 is connected to a screwed rod 19 passing through an adjusting nut 20 located between abutment faces 21, 22. on the casing 2. The vanes 6, 7 are cut away at 9, 10 so that on being fully opened they do not foul the cowling 11 of the propellor 3. The cut away parts 9, 10 also determine the minimum air flow required to cool the fan motor when the vanes are fully closed, Fig. 3.
Patent GB-362929-A (GB)
Title: Improvements in or relating to rakes
IPC: A01D7/04
Filed: 1930-09-03
Abstract: 362,929. Rakes. KUMER, E. SAHLI- and SAHLI, (nee KUMMER), I., Kronau, Zurich, Switzerland. Sept. 3, 1930, No. 26342. [Classes 6 (ii) and 6 (iii).] In rakes of the kind in which the head or tine-bar comprises a metal tube which is pressed towards the abutting end of the handle by means of a clamping device and screw-threaded connecting members arranged on the handle, the clamping device for the tine-bar 4, which is of polygonal cross section, comprises two plates 11, 13 each independent of the other and gripping the tine-bar above and below, the front plate 11 being pressed towards the bar by means of screw-threaded connecting members 2 and the rear plate 13 being inserted between the tine-bar and the abutting end of the handle. The surfaces of the plate 13 are inclined, so that by inserting it as shown or in an inverted position, the rake is adapted for use by an operator of normal or of small stature. The tines 7 have shoulders 8 and screw-threaded portions 9 whereby they are attached to the tine-bar.
Patent GB-241030-A (GB)
Title: Improvements in or relating to railway and other carriage door locks
IPC: E05B63/20
Filed: 1924-11-05
Abstract: 241,030. Hoadley, T., and Ramsay, N. F. Nov. 5, 1924. Latches, sliding, of the kind held at halfcock until released by a slam-bolt on closing the door, have a rocking lever intermediate the latch and slam-bolt, a light spring keeping the slam-bolt out of contact with the striking-plate when the door is closed to minimize wear. The latch-bolt a, manually operable by the toothed cam c, has a leg a<1> engaged by the end f<3> of the lever f, which is pivoted at g and pressed upwards by the spring h. The end k<1> of the slam-bolt k engages the recess f<2> of the rocking lever when in the position shown. If the door is slammed, the bolt k engages the striking-plate and is forced inwards, tilting the rocking lever out of engagement with the latch a which is then shot by its springs b. A light spring m holds the bolt k out of contact with the striking-plate and the leg a<1> engages over the top of the tilted lever f to prevent its return until the latch a is manually withdrawn.
Patent GB-860737-A (GB)
Title: Method for manufacturing highly polishable sheets of alumimium alloy
IPC: B32B15/01
Filed: 1959-07-31
Abstract: A polishable duplex sheet is made by covering one or both faces of a slab of an alloy consisting of 0.3-0.7% each of Mg and Si and the balance commercial Al with a sheet of an alloy consisting of 0.3-0.7% each of Mg and Si and the balance Al of over 99.85% purity, hot rolling the covered slab, cold rolling to the final thickness and then age-hardening the product.  In an example, both the sheets and the slab contained 0.4% Mg and 0.6% Si and the product was heat treated by solution quenching from 520 DEG C. and ageing at room temperature or at elevated temperature, e.g. 140 DEG C. or 160 DEG C., with or without intermediate ageing at room temperature.
Patent GB-665418-A (GB)
Title: Improvements in the manufacture of insulated electric conductors
IPC: H01B7/16
Filed: 1949-10-14
Abstract: 665,418. Making electric conductors. BRITISH INSULATED CALLENDER'S CABLES, Ltd., KEEFE, E. J., and LORCH, H. R. Oct. 13, 1950 [Oct. 14, 1949], No. 26389/49. Classes 83 (ii) and 83 (iv). [Also in Group XXXVI] Drawing; soldering.-An electric conductor of the type comprising one or more wires enclosed in a tubular metal envelope and embedded in a body of compacted insulating powder is manufactured by a continuous process in which an envelope of substantially uniform thickness is formed around the wires and insulating powder by bending a thin strip of ductile metal transversely to produce two or more complete turns while the wires move continuously forward, accurately shaping the envelope by passing it through a die, securing the overlapping edges by soldering, and drawing the envelope through a reducing die to compress the powder. The. powder, which is preferably talc, may be extruded around the wires in the form of a paste which is dried prior to the formation of the envelope, or it may be fed in the dry state into the space between the wires and the envelope during the formation of the latter. In the former method the paste 1 (Fig. 1), is extruded on to the wire 2 from a press 3, the covered wire then passing through an oven 8 in which the covering 7 is dried. The covered wire then passes through ,a die 9, 10, the two parts of which form an annular conical space into which a metal strip 11 is fed. This strip. is preferably of solder-coated copper, and is folded in the die, emerging at 13 having the shape shown in Fig. 2 E-E. The sheathed wire then passes through a soldering die 15 which is heated to cause the solder to flow and impart a smooth finish to the metal sheath (Fig. 2 F-F). In the second method the press 3 and oven 8 are omitted, the dry insulating powder being fed to the inner cone of the folding die within which is a coaxial hollow feed screw through which the conductor passes. The sheathed wire then passes through a soldering die as before. In both processes the covered wire is finally passed through a reducing die to compress the powder within the envelope.
Patent GB-137266-A (GB)
Title: Improvements in and relating to means for threading loom shuttles
IPC: D03J3/04
Filed: 1919-10-28
Abstract: 137,266. Pickles, T. Oct. 28, 1919. Shuttles provided with means to facilitate threading in the manner described in Specification 2184/11, wherein a freely movable and continuous flexible member d in loop form passes through eyes in the side of the shuttle, are provided with a barrier device within the shuttle for delaying contact and preventing entanglement of the weft with the looped member. The barrier device consists of a rod h above the member d and below the weft e<1>, a partition or staple having an eye through which the member passes. or other equivalent device.
Patent GB-771871-A (GB)
Title: Improvements in table courts for bouncing ball games
Inventor: SISTRUNK HENRY LAMAR
IPC: A63B69/38
Filed: 1955-09-15
Abstract: 771,871. Table games. FORSYTH, G. H. Sept. 15, 1955, No. 26507/55. Class 132(2). A bouncing board for balls projected by players comprises a table height base 14, 15 and a rear wall 12 divided by a horizontal line 16 into two parts 17, 18, the lower part 17 making an angle of substantially 90 degrees with a line A --- A joining the line 16 with the front 19 of the base, and the upper part 18 making an angle of more than 90 degrees with the line A - - - A. To indicate which part 17 or 18 the ball hits, a strip 21 of material having a different sound effect but having the same resilience as the rest of the board is disposed just above line 16. The board has side wings 13 and the rear wall 12 may comprise two rearwardly-converging halves.