baber/WOPTO huggingface dataset:
Patent GB-1243391-A (GB)
Title: Improvements in or relating to limiter-discriminator and gate circuits
Inventor: BILOTTI ALBERTO
IPC: H03D3/18
Filed: 1968-07-30
Abstract: 1,243,391. Frequency discriminators; limiters. SPRAGUE ELECTRIC CO. 30 July 1968 [31 July, 1967], No. 36269/68. Headings H3A and H3T. A frequency discriminator comprises: a limiter 10 producing a reference signal on line 80; an LC circuit 12 producing, from the reference signal, a signal at 24 which is in quadrature with the reference signal at the carrier frequency; differential gates 94, 95 controlled by the quadrature signal; a differential gate 96 controlled by the reference signal; and an integrator 93 coupled to the gates 94, 95 to produce an output proportional to the phase difference between the two signals. The phase difference between the two signals determines the proportion of the switching cycle for which current is fed from constant current source 92 to load 119. Push-pull output may be provided, Fig. 5 (not shown). The limiter 10 comprises three stages 32, 34, 36, intercoupled by emitter followers 33, 35 with a negative feedback path via resistor 40. Bias potentials are derived from diode chain 11.
Patent GB-625856-A (GB)
Title: Improvements in or relating to constructions of hollow building blocks
IPC: E04B5/44
Filed: 1946-12-09
Abstract: 625,856. Floors; walls; building blocks. NAAMLOOZE VENNOOTSCHAP METSELSTEEN, VOORHEEN A. GELDENS. Dec. 9, 1946, No. 36315. Convention date, May 29, 1943. [Classes 20(iv) and 87(i)] A construction of hollow building blocks such as a floor or a wall is formed of hollow building blocks 1 and smaller blocks 2, the mortar joints between rows of blocks being reinforced with rods 3 having hooked ends which are accommodated in the enlarged joints adjacent the smaller blocks 2.
Patent GB-1346404-A (GB)
Title: Mixtures of 5-silaimidazolidones-2- which contain isocyanate groups and urethanes
IPC: C07F7/18
Filed: 1972-08-04
Abstract: 1346404 Urethane containing compositions BAYERAG 4 Aug 1972 [4 Aug 1971] 36571/72 Heading C2C [Also in Division C3] A mixture of (a) at least one 5-sila-imidazolidone- (2) containing isocyanate groups having the formula wherein R 1  and R 2  independently denote unsubstituted, halo-substituted or cyano-substituted C 1-5  alkyl or alkoxy groups, or jointly denote a C 1-3  bis-oxyalkylene group, R 3  denotes hydrogen, a saturated or unsaturated C 1-15  aliphatic or cycloaliphatic hydrocarbon radical or a C 6-10  aryl radical, and R 4  denotes a divalent C 1-15  aliphatic, cycloaliphatic, araliphatic or aromatic radical which may contain hetero atoms or ester groups, and (b) at least one urethane of the formula R 5 -OCONH-R 6 -(NCO) m , wherein m is 0 or 1, R 5  denotes C 1-5  alkyl, R 6  denotes the radical R 4  when m is 1, but when m is zero R 6  denotes a radical of the formula the proportion of urethane groups to silicon atoms in the mixture being at most one, are prepared by reacting an aminomethyl alkoxysilane of the formula R 1 R 2 -Si(OR 5 )-CH 2 -NHR 3  with a diisocyanate of the formula at a temperature of - 20 to + 150 C. in proportions such that the reaction mixture contains at least one mole of diisocyanate per gm. equivalent of primary or secondary amino groups. The reaction mixture is preferably subsequently subjected to continuous flow, or thin layer distillation. If desired the ring closing reaction may be completed in a falling film evaporator. Uses.-As bonding interlayers between siliceous or metallic substrates and synthetic resin or elastomer coatings.
Patent GB-1273736-A (GB)
Title: Chemical polishing compositions
Inventor: LYDE DEREK MARTIN
IPC: C23F3/06
Filed: 1968-08-01
Abstract: 1,273,736. Cleaning composition. ALBRIGHT & WILSON Ltd. July 30, 1969 [Aug. 1, 1968], No. 36798/68. Heading C7E. A composition for cleaning Cu and Cu alloys has the weight per centage composition:- Arsenic acid 7-35, preferably 18-28 HNO 3  2À5-42À5, preferably 5-10 H 3  PO 4  8-65À5, preferably 30-50 H 2 O 3-25, preferably 5-15 Acetic acid 0-56, preferably 20-30 and a weight ratio of H 3  PO 4 : Arsenic acid plus acetic acid of 0À6 to 1À2:1, preferably 0À65 to 0À90:1, and is used as an immersion bath at 50- 80‹ C. to clean brasses containing 0À5 to 3À5% of Pb.
Patent GB-1459813-A (GB)
Title: Method of forming vitreous coatings on synthetic polymer lenses
IPC: G02B1/10
Filed: 1975-09-08
Abstract: 1459813 Vapour coating synthetic polymer lenses AMERICAN OPTICAL CORP 8 Sept 1975 [30 Sept 1974] 36832/75 Heading C7F A nitreous coating is formed on a synthetic polymer lens other than diallyl glycal carbonate polymer by first vacuum depositing a coating of SiO or SiO + SiO 2  by vacuum evaporating SiO in an oxygen atmosphere and then evaporating and vacuum depositing a layer of glass. When the polymer is a diallyl glycal carbonate polymer the surface is pre-treated with an alkali to hydroxylate the surface prior to vacuum deposition of the coatings. The SiO is evaporated at a pressure < 1 x 10<SP>-4</SP> Torr to form a layer at least one molecule thick and the glass is deposited at a pressure < 5 x 10<SP>-4</SP> Torr to from a layer 1-6 micrometers thick using electron beam heating, the substrate being pre-heated to 40-100‹C. The glass may be fused or amorphous SiO 2 , VYCOR (Trade Mark) or Pyrex (Trade Mark) and preferably comprises B 2 O 3 , SiO 2  and up to 5% Na 2 O. The polymers may be the allyl resins and thermoplastics such as polycarbonates.
Patent GB-1530936-A (GB)
Title: Wear indicator for brake lining
IPC: F16D66/02
Filed: 1976-09-06
Abstract: 1530936 Brake-lining wear-indicators R KENNEL 6 Sept 1976 [12 Sept 1975] 36832/76 Heading F2E A spring formed from strip material and secured to a shoe of an internal shoe drum brake is under stress and a free end of the spring is in a non-indicating position until the brake lining, also secured to the shoe, has worn down to a pre-determined minimum thickness, whereupon the stress in the spring is at least partially relieved and the free end moves to an indicating position in which it engages the brake drum to produce an audible signal. In Fig. 1, when the head 15 of rivet 20 is worn away, spring 13, 18, pulls the rivet out of stud 21, and free end 18 of the spring engages the drum (not shown). Where the stud is resilient and shouldered (Fig. 6, not shown) it may be inserted from the underside of back plate 11, and swaging of the stud from above is unnecessary. In Fig. 14 a tongue 47 of a flat spring 40 is held by a rivet 48 which is not intended to be worn away. Instead, the free end 41 of the spring is retained in a cavity 42 in the lining 10, until lining-wear down to the cavity occurs, whereupon the spring assumes the dotted line configuration, with its free end 41 engaging the cylindrical surface of the drum, (not shown).
Patent GB-394597-A (GB)
Title: Improvements in or relating to television and like systems
IPC: H04N5/12
Filed: 1932-12-30
Abstract: 394,597. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Ballard, R. C. ; 606, West Maple Avenue, Merchantville, New Jersey, U.S.A.) Dec. 30, 1932, No. 36906. Convention date, Jan. 6. [Classes 40 (iii) and 40 (v).] - The frequency deflecting a cathode ray 16 in one direction is maintained at a definite multiple or submultiple of the frequency deflecting the ray in the co-ordinate direction. A valve 32 generates oscillations at 4320 cycles, which are applied to the grid of a valve 34. When the potential on the grid is sufficient to cause anode current, a sharp impulse occurs in the anode circuit owing to positivereaction between an anode coil 38 and a grid coil 36. During the impulse a negative charge accumulates on a grid condenser 40 and prevents further operation of the valve until the charge has leaked away sufficiently through a resistance 42 in time for the next cycle of the oscillator 32. The anode circuit is coupled by a coil 58 to a valve 57 with a grid leak and condenser so designed that the valve responds only to every sixth impulse. Further frequency division occurs in valves 64, 68, resulting in impulses at 24 cycles. The impulses at 4320 cycles and 24 cycles are applied through potentiometers 82, 70 respectively to amplifying-valves 84, 76 which control, through a common potentiometer 78, generators 12, 18 of saw-tooth oscillations. Potentiometer 82 is so adjusted that the impulses at 4320 cycles drive the generator 12, but are of insufficient amplitude to drive the generator 18.
Patent GB-311313-A (GB)
Title: Improvements in electric insulators
IPC: H01B17/42
Filed: 1928-12-14
Abstract: 311,313. Brown, Boveri, et Cie Akt.- Ges., May 9, 1928, [Convention date]. Insulators. - Screens b, c, d of a porcelain insulator are protected against rain &c. by a covering metal screen k, as shown. The screen k is connected to the metal cap or sleeve which is provided for connection to other insulators or the mast.
Patent GB-880374-A (GB)
Title: Improvements in or relating to devices for producing polarized illumination
IPC: F21S8/10
Filed: 1956-12-04
Abstract: 880,374. Anti-dazzle light polarizers; lamps. SMITH, R. A. (Marks, A. M.). Feb. 13, 1958 [Dec. 4, 1956], No. 36988/56. Classes 39(2) and 75(4) [Also in Group XX] A device such as a car headlamp, for producing plane polarized illumination comprises a lamp source 171 of randomly oriented light with a parabolic reflector 172 on one side and a multilayered light transparent member 180, 181, on the other side wholly within the beams reflected from the mirror 172 and comprising a series of panels 175 and 176; 178 and 179 forming prism defining surfaces angularly disposed in the said beams to transmit and polarize one portion 184, 185 of the light beams and reflect another portion of the light beams, these latter being reflected again by plane reflectors 182, 183 into the general direction 192, 193 of the transmitted light 184, 185. The beam splitting assembly 180,181 comprises transparent sheets of glass or plastic having on each side a one-quarter wave layer of titanium dioxide, selenium or silicon, the sheets being inclined from 15 to 34 degrees to the beam axis. Half-wave mica retardation plates 187, 188 are inserted in the path of the reflected or transmitted beams to bring the planes of polarization of the two beams into parallelism. In an alternative embodiment the reflected parallel beam from the parabolic mirror 172 strikes spaced parallel coated transparent sheets inclined, e.g. at 15 degrees to the beam axis. Each transparent sheet face may have two layers of titanium oxide with an interlayer of magnesium fluoride. Positive or negative cylindrical lenses may be disposed between the reflector 172 and the polarizer 180, 181 for compressing the beam emanating from the reflector. The plates 187, 188 are covered by a glass 189 or beam spreading prism and the light emitting elements and the polarizer are enclosed in a sealed envelope 174.
Patent GB-1114871-A (GB)
Title: Vehicle body extension unit
IPC: B60R5/04
Filed: 1963-09-20
Abstract: 1,114,871. Extendible vehicles. M. C. R. SYDNEY-SMITH. 18 Dec., 1964 [20 Sept., 1963; 25 June, 1964], Nos. 37003/63 and 26220/64. Heading B7B. An extension for a van comprises a baseboard hinged to a backboard, the baseboard being supported by bolts engaging the opened door of the van. A canvas cover secured around the door opening and to the upper edge of the baseboard completes the extension.
Patent GB-1124464-A (GB)
Title: Pressure dispensing device for fluid material
IPC: B05B11/04
Filed: 1965-08-31
Abstract: 1,124,464. Syringes. AEROSOL INVENTIONS & DEVELOPMENT S.A. Aug. 31, 1965 [Aug. 31, 1964], No.37161/65. Heading F1R. [Also in Division B8] A bellows type fluid container has a spring- loaded outlet valve opened by depressing it in the direction of the container axis, counter pressure on the container rejecting the contents when the valve opens. Counter pressure may be applied by a spring or directly to the container.
Patent GB-953193-A (GB)
Title: Transverse inclination meter
IPC: G01C9/12
Filed: 1960-10-28
Abstract: 953,193. Clinometers. F.PLASSER, [trading as FRANZ PLASSER BAHNBAUMASCHINEN]. Oct.28, 1960 [Nov.13, 1959], No.37217/60. Heading G1F. In a device for measuring the transverse inclination of railway tracks and the like, in which a pendulum 15 moves adjacent a scale 13<SP>1</SP>, a frame 13 supporting the pendulum and scale is pivoted at 5 to a chassis, running on the rails 12, and also has feelers 11 which bear on the top surfaces of the rails 12. The device is particularly for use on a long chassis, such as that of a lifting, pinning and levelling machine or a track-packing machine where inaccuracy may occur due to the chassis taking up a skew position. As shown the two side members 1 of a track-packing machine, which includes vertically adjustable tool carriers 2, are connected by a transverse bearer 3 forming the support 4 for the pivot 5. A cylinder 6,which is pivoted at 5,forms the lower part of the frame 13, and receives a piston 7 connected by rod 8 and member 9 to a two-armed support 10 carrying the feelers 11 which are in the form of rollers. On admitting pressure medium through pipe 6<SP>1</SP> to cylinder 6,the rollers 11 are pressed firmly against the rails 12. Movement of the pendulum is damped by pistons 19 movable in cylinders 20 and provided with relief passages 19<SP>1</SP>. To move the chassis to another location, pressure medium is admitted through pipe 6" to cylinder 6 so as to raise rollers 11, and support 10 is then rotated in a horizontal plane until it is parallel to the rails 12.
Patent GB-1241063-A (GB)
Title: Directional drilling apparatus for oil wells
IPC: E21B7/08
Filed: 1968-08-05
Abstract: 1,241,063. Boring earth. SMITH INDUSTRIES INTERNATIONAL Inc. 5 Aug., 1968 [7 June, 1968], No. 37233/68. Heading E1F. Drilling apparatus comprises a non-rotating drill string 8, a down hole motor 20, a rotating bit 28, an orienting device 32 below the motor and having means, e.g. ribs 34, projecting laterally to bear against the hole formation and bias the drill bit in a lateral direction opposite to that of the ribs in order to either deflect the drill bit or counterbalance a tendency for the drill bit to be deflected, and a second orienting device 16 above device 32. Ribs 34 may be fixed or hydraulically movable. The orienting device 16 may have hydraulically movable shoes 18, or ribs (44) on a sleeve splined to the drill string to permit angular adjustment of the sleeve with respect to the string on dismantling of the string. Orienting device 32 instead of being threaded to the motor housing as shown may be similarly splined.
Patent GB-890505-A (GB)
Title: Motor vehicle rear-view mirrors
Inventor: DAY JOHN ANTHONY
IPC: B60R1/04
Filed: 1957-11-30
Abstract: 890,505. Vehicle rear view mirrors. DESMO Ltd. Oct. 22, 1958 [Nov. 30, 1957], No. 37407/57. Class 103(2). A vehicle rear view mirror comprises, a mounting bracket 12, Figs. 1 and 2, an arm 10 connected at one end to the bracket, a mirror (not shown) connected at 19 by a universal joint to the other end of the arm, and interengageable parts 15, 16 on the bracket and arm for locating the arm rigidly with respect to the bracket in a plurality of predetermined positions, all of the parts 15, 16 being concealed within a recess so as not to be visible when the arm is set in any of its angular positions. The arm 10 is secured to the bracket between two lugs 11 thereon, by a pin 13 having at one end a head 14a and at the other, a nut 14. A tooth 16 on the arm .is engageable with one of a series of notches 15 in the curved base, forming the recess, of the bracket. The other end of the arm is widened into a triangular portion 17 and merges into a slightly barrelled rod 18 having at one end a ball 19 engaged by a socket of a clip holding the mirror proper and at the other end a rubber cap 20, which may be pressed against the vehicle windscreen to steady the mounting.
Patent GB-922674-A (GB)
Title: Improvements in and relating to the impregnation of wood-fibre board
IPC: D21J1/08
Filed: 1961-10-19
Abstract: Wood-fibre boards, especially hardboard, are impregnated with at least 40  of their volume of an aqueous solution containing at least 65% by weight of a mixture of carbamide, an inorganic phosphate capable of esterifying the cellulose, and phosphoric acid, the molar ratio of the carbamide to the total phosphorus compound content being at least 4:1, and subsequently heat-treated to esterify the cellulose.  A suitable inorganic phosphate is ammonium dihydrogen phosphate, and the molar ratio of carbamide to total phosphorus compounds is preferably at least 6:1, but not more than about 10:1. The impregnation step may be effected by vacuum or pressure. Heat-treatment may be effected at 100 DEG -140 DEG C. for 1-3 hours, and should be such that on leaching the treated boards with water at least 95% of the chemicals impregnated are retained.  Treatment enhances the fire-resistance of the materials without adversely affecting their strength.ALSO:Wood-fibre boards, especially hardboard, are fireproofed by impregnation with at least 40% of their volume of an aqueous solution containing at least 65% by weight of a mixture of carbamide, an inorganic phosphate capable of esterifying the cellulose, and phosphoric acid, the molar ratio of the carbamide to the total phosphorus compound content being at least 4:1, and subsequently heat-treated to esterify the cellulose.  A suitable inorganic phosphate is ammonium dihydrogen phosphate, and the molar ratio of carbamide to total phosphorus compounds is preferably at least 6:1, but not more than about 10:1.  The impregnation step may be effected by vacuum or pressure. Heattreatment may be effected at 100 DEG -140 DEG C. for 1-3 hours, and should be such that on leaching the treated boards with water at least 95% of the chemicals impregnated are retained.
Patent GB-896631-A (GB)
Title: Apparatus for feeding and sorting cards and the like bearing coded information
Inventor: THOMPSON STANLEY HOWARD ADCOCK
Filed: 1958-11-22
Abstract: 896,631. Card-sorting apparatus. PARNALL & SONS Ltd. Nov. 23, 1959 [Nov. 22, 1958], No. 37662/58. Class 106 (1). [Also in Group XXX] A device F, Fig. 1, feeds cards carrying data one at a time to a a transport device G comprising rollers 6, Fig. 2, whose axes are inclined to the direction of travel of the cards so as to align each card against a fence 8, the cards are sensed by reading head H which is responsive to the data carried by each card to operate a combination of solenoids to direct the card to one of compartments 28. The apparatus following head H may be as described in Specification 875,173. The cards are kept flat during transit to the head H by balls 13, Fig. 2, which are captive between sheet 12 and each roller 6 which is driven by band 15 from a clutch K, Fig. 1. The reading head, Fig. 4 (not shown), includes spring fingers which keep the cards flat during sensing, punched holes being detected by photo-transistors which control the solenoids. A pulse derived during the sensing operation disengages clutch K, and as a card enters its selected compartment after being sensed by head H, it cuts off light to a photo-cell 30 which is arranged to reenergize clutch K and feed the next card to head H.
Patent GB-375333-A (GB)
Title: Improvements in joints between members having different coefficients of expansion
IPC: F16L25/00
Filed: 1930-12-13
Abstract: 375,333. Valve seats. STAGEL, K., 2, Giradigasse, and DAVID, A., 55, Alserstrasse, both in Vienna. Dec. 13, 1930, No. 37679. [Class 135.] In a compound or double-ended joint between tapered members having different coefficients of expansion, in which the members of each pair of tapered contacting surfaces slide relatively to and on one another when the members expand or contract under the action of heat, the taper of each pair of contacting surfaces is such that the generatrices of all the tapered contacting surfaces meet in a common point. A removable valve seat 12 is secured between coned surfaces meeting in a point O, as shown in the Figure. Specification 24522/98, [Class 99, Pipes &c.], is referred to.
Patent GB-1376558-A (GB)
Title: Quinoline-thionophosphonic acid esters a process for their preparation and their use as insecticides and acaricides
IPC: A01N57/16
Filed: 1973-08-09
Abstract: 1376558 Thionophosphonic acid esters BAYER AG 9 Aug 1973 [10 Aug 1972] 37713/73 Heading C2P Novel compounds of the general formula in which R is C 1 -C 4  alkyl, R<SP>1</SP>- is C 1 -C 4  alkyl or phenyl and R<SP>11</SP> is H or methyl are obtained by reacting a compound of the formula in the form of an alkali metal, alkaline earth metal or ammonium salt thereof or in the presence of an acid binding agent with a halide of the formula (RO)(R<SP>1</SP>)P(S)Hal where Hal is halogen. The reaction is preferably carried out in an inert solvent or diluent and is generally effected at from 20 to 80 C. The products have insecticidal and acaricidal activity and may be used as active ingredients in conventional pesticidal compositions.
Patent GB-1294165-A (GB)
Title: Screw threaded container closures
Inventor: TULL ROBERT JAMES
IPC: B65D50/06
Filed: 1970-08-05
Abstract: 1294165 Screw threaded containers closures P C COX (MASTIC APPLIANCES) L+d 4 Aug 1971 [5 Aug 1970 37826/70 Heading B8T Outlet portion 2 of container 1 has a first threaded length 4, an unthreaded length 6 and a second threaded length 7, one having a right handed thread, the other a left handed thread so that on application of a cap 3 having superimposed intersecting left and right handed female threads, the cap is rotated counterclockwise, pressed down a short distance and then rotated clockwise as viewed from above the cap. Again, the cap may carry two spaced sets of male threads of opposite hand while the interior surface of outlet 2 is formed with interesting left and right handed female threads.
Patent GB-357029-A (GB)
Title: Improved boxes or receptacles for displaying shirts and other goods
IPC: B65D5/42
Filed: 1930-12-16
Abstract: 357,029. Boxes for shirts &c. TORRES, H. D., 51, George Street, Manchester. Dec. 16, 1930, No. 37873. [Class 18.] A box for holding and displaying shirts, pyjamas, &c. consists of a shell B and a drawer A with a transparent panel of paper, viscose, glass, cellulose, &c. d, through which the goods can be viewed, this end being hinged so as to fold downwards. A tab a3 is provided for pulling out the drawer and side flaps a<1> serve for excluding dust. A hole a<2> is provided to prevent formation of a partial vacuum as the drawer is pulled out. The boxes are adapted to be arranged one above the other.
Patent GB-1180397-A (GB)
Title: Improvements relating to Luggage Handles
Inventor: CONSTABLE ERIC FREDERICK
IPC: A45C13/26
Filed: 1966-08-24
Abstract: 1,180,397. Suitcase handles. C. W. CHENEY & SON Ltd. 3 July, 1967 [24 Aug., 1966], No. 37906/66. Heading A4G. A rigid, U-shaped, end-hinged, moulded, one-piece plastics handle has the grip portion 10 provided with a rib 15 entering a groove in a yielding, e.g. rubber, portion 17. Portion 17 may snap on rib 15 if it is dovetailed, or be glued on if the rib is rectangular.
Patent GB-960050-A (GB)
Title: Photographic stripping film
IPC: G03C1/805
Filed: 1962-10-08
Abstract: 960,050. Photographic stripping film. GENERAL ANILINE & FILM CORPORATION. Oct. 8, 1962 [Nov. 2, 1961], No. 38002/62. Heading G2C. A photographic stripping film comprises a temporary support joined to a permanent support by a stripping layer comprising polyethylene or a styrene/maleic anhydride copolymer, the permanent support carrying a silver halide emulsion layer. The temporary support may be cellulose triacetate and the permanent support cellulose nitrate. The stripping layer may contain sodium carbonate, sodium or potassium bicarbonate, or sodium or potassium sulphite. In Example IV, a polyethylene stripping layer contains also morpholine and oleic acid.