baber/WOPTO huggingface dataset:
Patent GB-670979-A (GB)
Title: Improvements in or relating to sparking plugs
IPC: H01T13/46
Filed: 1949-03-21
Abstract: 670,979. Sparking plugs O'CARROLL, T. J.. March 21, 1949, No. 7575/49. Class 7(iv) In a sparking plug comprising an electricallyinsulated - central electrode A having an exposed end in which the spark passes axially of the plug between said end and a radiallyextending earthed electrode J, an intermediate electrode K is located in the spark gap and insulated from the other electrodes so as to split the spark produced into two consecutive sparks. Part of the electrode K is embedded in the insulation D and is of arcuate cross-section formed concentric with the electrode A whilst the tip L has a profile as shown in Fig. 3. The electrode J is formed integral with or attached to the casing E and may comprise two or more tongues. The insulation is made from a transparent material or a synthetic resin of the thermosetting type.
Patent GB-870330-A (GB)
Title: Linear polyester films having surfaces suitable for writing thereon
IPC: C08J7/043
Filed: 1960-03-03
Abstract: A coating composition comprises a polymeric terephthalic acid mixed ester and an inert pulverulent filling of a grain size below 30m . The filling may be glass powder, finely divided silicon dioxide (e.g. in the form of kieselguhr or quartz), aluminium oxide (e.g. in the form of emery), titanium dioxide, silicon carbide, talc, chalk or potassium phosphate.  The polymeric terephthalic acid mixed esters are copolyesters obtained by esterification and condensation of mixtures of acids containing terephthalic acid and at least one further dicarboxylic acid e.g. isophthalic, orthophthalic, adipic or sebacic acid, with dihydric alcohols containing up to 10 carbon atoms in the molecule e.g. ethylene glycol, tri-, tetra-, penta-, hexa-, hepta-, and deca-methylene glycol, and propylene glycol.  Solvents for the mixed esters are methylene chloride, chloroform, 1, 1, 2-trichlorethane or mixtures thereof.
Patent GB-1090646-A (GB)
Title: Improvements in detergent solutions
Inventor: FURST IMRE
IPC: C11D3/48
Filed: 1965-02-23
Abstract: Detergent solutions comprise (a) an anionic or cationic surfactant; (b) an organopolysiloxane, and (c) a bactericidal substance (not being a cationic surfactant) capable of destroying gram-positive and gram-negative bacteria. A suitable surfactant is triethanolamine dodecyl benzene sulphonate; a suitable component (b) is phenyl methyl silicone; and suitable bactericides are hexamethylene bis [N1-(N-p-chloro-phenylamidino) guanidine acetate], and the material available under the Registered Trade Mark "Coalite DHE2."  In the example, industrial methylated spirit is also present.
Patent GB-364931-A (GB)
Title: Improvements in or relating to brassieres and similar garments
IPC: A41C3/00
Filed: 1931-03-13
Abstract: 364,931. BrassiÞres. FORMA CO., Ltd. and WHITE, J. F., 158, Oxford Street, London. March 13, 1931, No. 7734. [Class 141.] A brassiÞre has independent triangular breast supports A each comprising two layers, an inner layer 20 and an cuter layer 10, the layers being nearly alike in shape and stitched together along coincident edges 21, 22 and along a length 23a of the edge 24. To the apex 12 of each triangular part is attached a shoulder strap 11, which passes through an adjusting slide 19 to an angular portion 26 of the upper layer. Each slide 19 is carried by a strap 17 connected to a coupling device 18, which is itself connected to a corner 25 on the lower layer of the breast support. Buttons 8, 8<1> and corresponding buttonholes 9, 91 connect an outer and inner layer to the corresponding inner and outer layer respectively on the other side of the garment. By adjusting the straps at the members 19, 18, the garment may be fitted to the figure. In a modification, the corners 26 are connected directly to adjust. ing straps and the shoulder straps so that, by altering a single adjusting strap in its slide, the garment is fitted to the figure.
Patent GB-160136-A (GB)
Title: Casing of substantially rectangular shape, particularly adapted for electrical apparatus
IPC: G01R11/04
Filed: 1921-03-11
Abstract: 160,136. Landis & Gyr Akt.-Ges. March 13, 1920, [Convention date]. Hollow-ware.-Rectangular casings for electrical apparatus &c. stamped from sheet metal are formed with rounded corners, Fig. 2, to avoid tearing during the process but with one or more of the angles between the bottom 6 and the sides 7 sharp to facilitate fitting terminal box 2, and increase the available space by allowing a coil 3, for instance, to be placed near the side 7. Reference has been directed by the Comptroller to Specifications 20000/89, 21045/93, and 7647/15, [Class 36, Electricity, Conducting &c.].
Patent GB-1124714-A (GB)
Title: Improvements relating to bucket elevators
IPC: B65G23/44
Filed: 1967-02-20
Abstract: 1,124,714. Endless conveyers. POLYSIUS G.m.b.H. 20 Feb., 1967 [20 April, 1966], No. 7907/67. Heading B8A. The shaft 2 of the return pulleys 3 of an endless bucket-carrying chain elevator is movable in casing slots 8 by the action of weights 9 in order to tension the chains 4. To prevent leakage of conveyed material, each slot 8 is sealed by inner and outer sliding plates 14, 12. The plate 12 is rigid with a gland member 11a of the shaft 2. The plate 14 is axially slidable on the member 11a under pressure of a spring 16.
Patent GB-1212964-A (GB)
Title: Sulphur-curable compositions comprising amorphous olefine copolymers and diene rubbers
IPC: C08L21/00
Filed: 1969-02-14
Abstract: 1,212,964. Substituted norbornenes. SUMITOMO CHEMICAL CO. Ltd. 14 Feb., 1969 [20 Feb., 1968], No. 8036/69. Heading C5E. [Also in Division C3] 5 - Oligoisoprenyl- and -oligobutadienyl - 2- norbornene are prepared by reacting 5-chloro-2- norbornene with sodium oligoisoprene and sodium oligobutadiene.
Patent GB-1262875-A (GB)
Title: Angle modulation system
IPC: H03D3/14
Filed: 1969-02-14
Abstract: 1,262,875. Demodulators; transistor amplifiers. R.C.A. CORPORATION. 14 Feb., 1969 [15 Feb., 1968], No. 8109/69. Headings H3A and H3T. A frequency demodulator comprises capacitors 206, 216, connected in series an inductor 204 shunting capacitor 206, and having an input applied to it, and output circuits 302, 304 coupled across both capacitors and across the capacitor 216 respectively. The first output e 1  has a zero at w e , the second, e 2  has a zero at w h , and the two outputs are combined in circuit 300 to produce a linear amplitude frequency response between these two limiting frequencies. The demodulated output is derived from point 322.  The input to the parallel tuned circuit 202 may be applied to a tap on the inductor, Fig. 4 (not shown), and the coupling between stages of the detector 200 may include low pass filters, Fig. 5 (not shown). The demodulator is preceded by a limiting amplifier 100 having three sections 18, 20, 22 and a stabilizing circuit 74, 76, 78, 80.
Patent GB-174874-A (GB)
Title: Improvements relating to tooth brushes
IPC: A46B5/00
Filed: 1921-05-27
Abstract: 174,874. MacMurray, J. E. May 27, 1921. Handles combined with other appliances; hinged folding handles.-In a folding toothbrush the handle comprises two parts 4, 5 jointed endwise, a sleeve 11 being slidably mounted on one of the parts and adapted to slide over the joint and hold the brush in extended position. The parts 4, 5 may be directly hinged together, as shown, or united by means of a link.
Patent GB-512803-A (GB)
Title: Improvements in or relating to double-walled electric lamps
IPC: H01K1/58
Filed: 1938-03-16
Abstract: 512,803. Electric incandescent lamps. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES ETABLISSEMENTS CLAUDE-PAZ & SILVA. March 16. 1938, No. 8166. Convention date, Jan. 28. [Class 39 (ii)] In a double-walled lamp the outer bulb E is partly filled with a liquid within which the inner bulb i is immersed, the properties of the liquid being such that, during the operation of the lamp. it boils and emits vapours. which condense on the inner wall of the part of the outer bulb above the level of the liquid. Saturated hydrocarbons or mixtures of such hydrocarbons, such as the oil 'known under the Registered Trade Mark "Vaseline," may be used for the cooling liquid. Alternatively, in order to absorb the infra red rays. a weak solution of copper sulphate in water may be used. A coloured liquid may be used to obtain coloured light. Luminescent liquids may also be used. In a modification for use as a projection lamp the bulbs are so shaped that the liquid between them forms an element of an optical projection system. A ring of porous material may be disposed at the upper end of the immersed bulb to ensure regular boiling in the upper part of the liquid, and the upper part of the outer bulb may be made of metal and provided with cooling-fins which may either be enclosed in the projector or extend to the outside thereof. A fuse f<1> may be provided in one leading-in wire as a guard against excessive heating, and a fuse f<2> in the other wire as an excess current fuse. The inner bulb may contain a filling of xenon and nitrogen, and the space above the liquid in the outer bulb may be filled with nitrogen at a pressure of 1 c.m. of mercury.
Patent GB-1504965-A (GB)
Title: Gramophone record jacket
IPC: B65D85/57
Filed: 1975-02-27
Abstract: 1504965 Record sleeve F H RICE and G ROSS 27 Feb 1975 8242/75 Heading B8K A gramophone record jacket comprises a first pocket portion having an open side which is capable of slidably receiving therein the open side of a second pocket portion in overlapping relationship. The first pocket portion has a front panel 18, a rear panel 17, and an inwardly turned flap 22 on the rear panel and extending along its open side, and the second pocket portion has a front panel 11, a rear panel 12, and an outwardly turned flap 16 on the open side of the panel 12. The panels 11, 18 are completely planar and have a free edge along the open side of their respective pocket. The flaps 16, 22 are arranged to engage one another when the pocket portions are slid apart and the free edges of the panels 11, 18 are then spaced to allow access to the interior of the second pocket. As described, the jacket is formed from two cardboard blanks, Fig. 1, by folding and adhering front panels 11, 18 to rear panels 12, 17 by flaps 13, 14 and 19, 20, respectively. The two pockets so formed are telescoped together with the flaps 22, 16 folded inwardly and outwardly respectively so as to interengage when the two pockets are drawn apart, Fig. 6, to allow a record 24 to be removed from the jacket.
Patent GB-512500-A (GB)
Title: Improvements in directional lighting fittings
IPC: F21V7/04
Filed: 1938-03-17
Abstract: 512,500. Streets &c. lamps. GENERAL ELECTRIC CO., Ltd., and SMYTH, J. B. S. March 17, 1938, No. 8278. [Class 75 (ii)] In a street lamp or like directional lighting fitting having a reflector consisting of two silvered-glass paraboloidal wings arranged one on each side of the source O and so directing the light that the intensity is a maximum in a direction between the horizontal and a line 30 degrees below the horizontal, part of the reflector is rendered matt by sand-blasting, the area of this matt surface being such that the rates of the maximum intensity in the preferred direction to the mean intensity between two cones with vertical axes through the source and with their sides inclined at 30 degrees and 45 degrees respectively to the vertical does not exceed 4. In Fig. 1, which shows an end view of one of the wings, with XYX and PQR representing respectively the contours of the outer and inner edges. and XX'X, AA, BB, CC, DD the lines in which a set of equidistant vertical planes, shown in Fig. 2, intersect the wing, the . sand-Masted portion amounting to about one quarter of the total reflecting surface, is shown shaded. As indicated by the dotted line in Fig. 2, the point Y projects further from the source O than the points X, X.
Patent GB-357120-A (GB)
Title: Methods for producing silk-like lustre on vegetable fibrous material by coating
IPC: D06M15/05
Filed: 1930-03-14
Abstract: Vegetable textile materials in the form of fabric or yarn acquire a silk-like lustre, without material loss of softness, by coating or impregnating with solutions in volatile solvents of cellulose ethers or of cellulose xanthic acid esters or of N-substituted thiourethanes of cellulose, and then subjecting the coated or impregnated materials to a treatment adapted to cause the materials to shrink.  Pyridine, or aqueous pyridine, are suitable solvents for use in the preparation of the solutions of the cellulose ether &c., and to such solutions may be added one or other of the substances that can be obtained according to the process of Specification 25246/11, [Class 2 (ii), Cellulose &c.], for example, 2-oxytrimethylene-1:3-sulphide, or other softening agents or plasticizers.  In examples, cotton sateen is coated with solutions of cellulose ethyl either in benzene-alcohol or aqueous pyridine, or of cellulose benzyl ether in pyridine, or of the cellulose xanthic acid methyl or ethyl esters of Specification 252,654, [Class 2 (ii), Cellulose &c.], in aqueous pyridine, or of diethyl-, penta-methylene-, phenyl-, methylphenyl-, m-diphenylene, phenylmethyl-, or benzylthio-urethane of cellulose, for example, as prepared according to Specifications 231,801 or 248,246, [both in Class 2 (ii), Cellulose &c.], in aqueous pyridine; to the solutions there may be added as softening agents, o-tricresyl-phosphate, glycerine, dichlorether mono- or dithioglycerine or mono- or di-ethylene glycol, 2-oxymethylene-1:3-sulphide, or another sulphide or a mercaptan of a di- or polyvalent alcohol; and the material is shrunk by treatment with caustic soda solutions of strengths varying from 15-50 per cent, or with a concentrated solution of sodium sulphide.  In the solutions of the cellulose compounds, a gas, for example, air, hydrogen or nitrogen, may be emulsified or dissolved under pressure.  The materials treated, may be cotton, flax, linen, hemp, ramie fibre and jute.  Specifications 248,994, [Class 2 (ii), Cellulose &c.], and 357,190 also are referred to.
Patent GB-1192303-A (GB)
Title: Apparatus and Method of Inductively Heating Elongate Workpieces
IPC: C21D1/10
Filed: 1968-02-20
Abstract: 1,192,303. Induction heating apparatus. AEG-ELOTHERM G.m.b.H. 20 Feb., 1968 [20 May, 1967; 16 Aug., 1967], No. 8306/68. Heading H5H. In apparatus for heating an elongated workpiece 1, e.g. with cam surfaces 2, by an inductor 3 extending the entire length of the workpiece, the workpiece 1 is held resiliently between compression spring-biased centres 5, 5<SP>1</SP>, which are reciprocably displaceable simultaneously in the direction of the longitudinal axis of the workpiece. The centres 5, 5<SP>1</SP> are withdrawn simultaneously from workpiece 1 by an axial thrust in the direction of arrow 15, Fig. 1, on a rack 12, connected via a rod 11 and a rod 10 to centre 5<SP>1</SP>, a pinion 14 engaging the rack 12 and a rack 9 connected via a rod 8 to centre 5. Alternatively, centre 5 has a rack which co-operates with two pinions 20, Fig. 2, on a common axle and a further rack 16. A thrust in the direction of arrow 19 on rack 16 causes centres 5, 5<SP>1</SP>, to withdraw simultaneously from the workpiece 1, but centre 5 withdraws three times as fast as centre 5<SP>1</SP> thereby maintaining a ring 2 stationary beneath a recess in the inductor 3. The ratio of the diameters of the two pinions 15 is proportional to the ratio of the lengths of the workpiece on each side of the ring 2, viz. 1:3.
Patent GB-825060-A (GB)
Title: Improvements in or relating to photographic camera shutters
IPC: G03B9/44
Filed: 1956-03-16
Abstract: 825,060. Photographic cameras. AMANO TOKUSHU KIKAI KABUSHIKI KAISHA. March 16, 1956 [July 5, 1955], No. 8387/56. Class 98(1) In a camera, a light shield 7 co-operates with a cover plate 9 and a shutter plate 19 which are swung to their upper limit positions against return springs 15 and 20 respectively, and member 13 is retained while plate 19 falls back to make the exposure and is followed by the member 13 to end it. The rim of a light shield 7 is inclined at about 45 degrees to the optical axis of the camera objective and the cover plate 9 may be provided with a mirror 8 forming part of the view-finder of a reflex camera. A coiled shutter spring 32 driving master-member 29 is wound through a band 33 on drum 31 connected to the film winding handle on the camera body and the projection 28 of the mastermember is retained by lever 25. When lever 25 releases projection 28, plate 19 is raised by the engagement between projection 28 and projecting part 23 of arm 18 and plate 9 is also carried to the upper limit position by the engagement of lugs 21 and 22. Plate 9 is retained in the limit position by engagement of catch 40 with tooth 43 of spring latching plate 41. Continued rotation of master-member 29 frees part 23 and plate 19 returns under the action of spring 20. During this return travel striker 39 on part 23 strikes abutment 44 on a shutter speed control slide 45 and spring plate 41 is displaced to disengage catch 40 and tooth 43 and plate 9 is thus returned to cover the open end of the light shield 7 under the action of spring 15. Speed control slide 45 is movable in slot 42 by arm 47 and the "bulb"  operation of the shutter may be effected when the slide is located at the lower end of the slot beyond the travel of the striker 39. In this case the shutter remains open until arm 27 is allowed to return under the action of spring 26, the release button 24 resuming its projected position. Arm 27 engages abutment 46 on plate 41 and displaces the plate to disengage catch 40 and tooth 43. When the shutter is to operate at speeds controlled by an escapement, plate 41 is locked in the inoperative position by the engagement of flange 49 with plate 50. On completion of the shutter and film winding operation ear 38 fast with pawl 54 enters notch 36 in ring 37 to retain the shutter spring in its wound condition. Pawl 54 is thus interposed in the path of projection 21 and, when this is released to operate the shutter, it is retained by the pawl and can only be released on starting the film-winding operation in which case ear 38 rides up the inclined side of notch 36. Double exposure is thus prevented. On completion of the film winding operation and retention of ring 37 by ear 38, the band 33 is rewound on drum 31 by rotating the film winding handle in reverse after a gear shift has disconnected the film drive and connected the winding handle directly to drum 31 (Fig. 9, not shown). The drum 31 is allowed to rotate freely in the anti-clockwise direction by no-back spring 66.
Patent GB-240733-A (GB)
Title: Improvements in coal cutting machines of the chain type
IPC: E21C25/28
Filed: 1925-03-30
Abstract: 240,733. Hurd, F. W. March 30, 1925. Coal-cutting machine.-A machine of the chain type has the chain jib formed of a main member A provided with a turntable A<2> and carrying entirely the sprocket wheel C<4> with its bearings, and a secondary member B sliding within or upon the main member, a. chain channel being formed around the members and the chain being tensioned by means such as pins B<1> adjustably threaded by a cross-web A<4> of one member and carrying springs B<3> acting between a shoulder B<4> and a cross-web B<2> on the other member; a shoulder B<6> limits inward movement of the secondary member. The jib may be widened centrally. Spring-pressed plungers D support the outer end of the secondary member. The turntable has a crown wheel A<3> for hand or power slueing and supports the driving sprocket C<4> on brushes C, C', C<2>, the sprocket having a hollow boss receiving a squared or splined driving-shaft or having a clutch connection with the shaft. The chain channel has, except at the outer end of the jib, rubbing strips E' with inner and outer lateral projections E<2>, E<3>; plain rubbing strips H are provided at the outer end of the jib and at the bottom of the channel at the centre part of the jib. The single links G<3> of the cutter chain carry part-cylindrical cutter blocks G<2> having shoulders bearing on the projections E<2>, E<3>, while the double intermediate links G bear below the projections E<3> and have inturned flanges G<1> Fig. 6, which meet and close the spaces between them to exclude cuttings from the channel E. Retaining flanges K, attached below the cutting side of the jib, substantially close the space below the jib to hold cuttings within reach of the cutter chain which removes them.
Patent GB-181809-A (GB)
Title: Improvements in paper making machines
IPC: D21F1/02
Filed: 1921-03-17
Abstract: 181,809. Carpmael, M. P., (Bagley & Sewall Co.). March 17, 1921. Fourdrinier paper-machines.-In apparatus for carrying out the method of making paper described in Specification 181,140, a pool 10 is maintained by a head of pulp in the flow box 7 in which the quantity of water is adjusted to the thickness of the paper to be made. A resistance surface over which the pulp flows may comprise an apron 11, Fig. 2, extending forwardly to a greater distance centrally than at the sides as shown. The resistance surface may consist of a board arranged forward of the breast roll 1, and beneath the wire, or the slice 9 may be arranged in the rear of the centre of the breast roll, and the surface of the breast roll used for the purpose. Where a large quantity of water is used, the wire cloth may be arranged to run uphill from the breast roll to give the water more opportunity to drain from the stock.
Patent GB-579764-A (GB)
Title: Improvements in or relating to electromagnetic energy transmission apparatus
IPC: H01P1/06
Filed: 1943-05-26
Abstract: 579,764. Wave guides; directive wireless systems. SPERRY GYROSCOPE CO., Inc. May 26, 1943, No. 8449. Convention date, May 27, 1942. [Class 40 (v)] Relatively-turnable waveguides are interconnected by a section of concentric line of which the inner conductor is continuous and the outer conductor divided to permit relative rotation; and wave traps are provided to reduce escape of energy at the joint. The guide 3 is secured to an outer section 6 of concentric line which embraces an inner section 5 to which the other guide 2 is secured, the sections 5, 15 being relatively turnable on the bearing 19. The section 5 has an enlarged extension 32 which embraces a further section 7 of the concentric line and rests thereon at the bearing 30. The inner conductor 4 of the line extending continuously through the sections, has bulbous enlargements 10, 11 where it crosses the guides, and is supported at each end by adjustable tuning plugs 21, 26. To prevent escape of energy through the gap between the outer conductor sections 15 and 5, the former is fitted with an internal sleeve 40<1> which is reduced in its external diameter at its upper part, thus leaving a wide quarter-wave annular gap 16 communicating with a narrow quarter-wave annular gap 16<1>. A similar wave-trap is, arranged to prevent leakage between the line sections 7, 32. The tuning plug 26 is adjustable by a knob 38 and rods 39, and the plug 21 by a nut 22 screwed on the section 6 and engaging radial pins 24 on the plug. The ends of the guides 2, 3 are closed by adjustable tuning plugs 37, 20. Verticallypolarized waves fed along the guide 2 are picked up by the member 10 and cause an axial current therein which sets up a verticallypolarized wave in the guide 3 by radiation from the member 11. The guide 3 may be turned about the axis 4 so as to radiate the wave energy through the open end of that guide in any desired direction. The guide 3 may be twisted at 41 to change the direction of polarization, and may be provided with a reflector 36 for assisting directivity. The system will operate to transfer energy in the opposite direction for receiving.