baber/WOPTO huggingface dataset:
Patent GB-673982-A (GB)
Title: Improvements in or relating to low-frequency amplifying circuits
IPC: H03G9/08
Filed: 1949-08-04
Abstract: 673,982. Thermionic valve amplifiers. PHILIPS ELECTRICAL, Ltd. Aug. 4, 1949 [Aug. 7, 1948], No. 20320/49. Class 40 (vi). The input circuit of a thermionic valve amplifier comprises a gain control with the input to the valve taken from the moving contact of a potentiometer, a high negative feed-back applied to the low potential end of the gain control, a smaller source of positive feed-back connected to the top of the potentiometer through an impedance smaller than the full resistance of the gain control, and a negative feed-back voltage, less than the first negative feed-back, and of the same order as the positive feed-back, applied to an intermediate fixed contact through an impedance smaller than the resistance of that portion of the gain control between the third fixed contact and the lower end. As shown, the secondary 10 of the output transformer (shown twice on the Figure) is provided with an earthed tap c and a high negative feed-back is taken from the tap e and fed to the bottom of the gain control potentiometer 4. Positive feed-back from the tap d is fed to the top of gain control 4 through impedances 20, 14 and a smaller negative feed-back from tap b is fed to a fixed contact 12 on the gain control through impedances 16, 40, which are smaller than the resistance between contact 12 and the bottom of the gain control. The feed-backs from taps d and b may be equal, or the negative feed-back from tap b may be slightly larger than the positive feed-back from tap d. The Figure shows an arrangement including the circuit of Specification 644,174, so that the low and high tones are amplified less than the intermediate tones at high settings of the gain control, while the reverse is true for low volume output. This is achieved by condensers 13, 15 which form intermediate tone filters with resistances 14, 16, respectively, connecting the positive and negative feed-backs from taps d and b to the intermediate fixed contact 12. An additional tone control comprises potentiometer 25, with its moving contact 27 connected through a small condenser 28 to the source of negative feed-back a, and negative feed-back of the low tones to the bottom of potentiometer 25 through a filter 21, 22. This tone control may be replaced by the tone control circuit of Specification 681,359. Specification 533,255 also is referred to.
Patent GB-1302484-A (GB)
IPC: C07C5/25
Filed: 1971-04-19
Abstract: 1302484 5-Ethylidene-2-norbornenes MONTECATINI EDISON SpA 19 April 1971 [26 Jan 1970] 20351/71 Heading C5E [Also in Division B1] 5-Ethylidene-2-norbornenes are prepared by isomerizing 5-vinyl-2-norbornenes with a catalyst mixture of (1) a titanium alcoholate of the formula Ti(OR<SP>1</SP>) 4 X y-y , wherein R<SP>1</SP> = C 1 -C 8  hydrocarbyl, X = Cl, Br or I and y is an integer of 1-4, or a cyclopentadienyl titanium trihalide or di(cyclopentadienyl)titanium dihalide; and (2) a Group Ia, IIa, IIIa or lanthanide metal optionally with a Group IIIa metal trihalide. The norbornene nucleus may contain a C 1 -C 4  alkyl substituent. The cyclopentadienyl group in the catalyst may contain a C 1 -C 4  alkyl substituent. The isomerization may be carried out at 15-200 C. in an inert aromatic or saturated aliphatic hydrocarbon diluent, e.g. mesitylene. Catalyst components used in the examples are (1) dicyclopentadienyl titanium dichloride, Ti(OBu) 4  and tetra-(2-ethyl-hexyl)titanate; (2) sodium dispersed in mineral oil, optionally containing AlCl 3 .
Patent GB-956639-A (GB)
Title: Flame-proofing of polymeric materials
IPC: C08F2/44
Filed: 1962-05-28
Abstract: A composition comprises a major proportion of a polymer derived from at least one ethylenically unsaturated monomer, e.g. styrene, substituted styrenes, lower-alkyl (e.g. methyl) acrylates or methacrylates, and a minor proportion, e.g. 8-33%, of the dimethyl ester of b , b , b -trichloro-a - hydroxyethyl phosphonic acid.  The composition may be produced by polymerising the monomer in the presence of the ester and of a free-radical polymerisation initiator. The ester may be formed in situ from equimolecular proportions of dimethyl phosphite and chloral. The composition may be formed into articles. Specification 731,506 is referred to.
Patent GB-1437812-A (GB)
Title: Coating
IPC: B29C48/07
Filed: 1973-04-30
Abstract: 1437812 Extruding striped material EASTMAN KODAK CO 30 April 1973 [1 May 1972] 20452/73 Heading B5A [Also in Divisions B2 and G1] A method of coating a substrate with at least one coating layer comprises extruding on to the substrate at least one layer in the form of a single laminar flow, the layer or one of the layers in the laminar flow including a stripe or stripes of a different material from the rest of the layer the stripe(s) extending through the thickness of the layer and longitudinally thereof. In Fig. 3, a laminar flow of three layers is produced when pumps 31, 37, 38 force coating materials into chambers 32, 35, 36 then through slit nozzles 33, 40, 42 on to inclines 34, 41, 42. A stripe is introduced into the top coating from a receptacle 51 through a tube 52. The coatings adhere to a support 44 rotating on a drum 43. Fig. 4 shows similar apparatus where the laminar flow forms a falling curtain before contacting the substrate. In a further embodiment, Fig. 5 (not shown), an extrusion nozzle in contact with a substrate rotating on a drum has several inlets, one of which introducing the strip, and the coating material and stripe are simultaneously extruded. The substrate may be a continuous web, plate, sheet or discrete sheet and may be transparent; preferably a photographic film of cellulose nitrate, cellulose acetate, polyester, paper, glass or cloth. There may be more than one stripe and the substrate may be slit in the direction of the stripe(s). In examples (1) three clear gelatin layers are coated on to a cellulose acetate support, the top layer including a stripe of an aqueous gelatin solution containing dispersed Fe 3 O 4  (magnetite) and a blue dye; (2) a two layer coating has an upper layer comprising a gelatin solution with a stripe of iron oxide dispersed in polyvinyl alcohol, and the lower layer is a gelatin solution containing Carey Lea (colloidal) silver; (3) a polyester support is coated with a layer including a stripe of iron oxide as in Example 1, the layer comprising panchromatically sensitized silver bromoiodide, saponin and gelatin; (4) a single layer of unsensitized silver halide emulsion contains a stripe of the same but panchromatically sensitized; (5) a polyester support has a single coating of yellow dyed gelatin with stripe containing gelatin in which is dispersed a copolymer of butyl acrylate and styrene and a scintillator consisting of 2,5- diphenyloxazole and 2,2<SP>1</SP> - phenylenebis - (5- phenyloxazole); (6) a stripe of γ-ferric oxide in plasticized cellulose nitrate is included in a single layer of cellulose nitrate, (7) a single stripe of gelatin, a non-ionic surfactant, and Ag 2 CrO 4  was included in a layer of a composition of polyvinyl alcohol, copper sulphate, neocuproine, and a non-ionic surfactant. The dried layer is used to detect chloride and uric acid by spot tests.
Patent GB-614956-A (GB)
Title: An improved device for use in removing bottle closures
IPC: B67B7/44
Filed: 1946-07-09
Abstract: 614,956. Wrenches. MASON, J. A. July 9, 1946, No. 20486. Convention date, July 10, 1945. [Class 61 (iii)] [Also in Group XVII] A device for removing bottle stoppers comprises two flat metal jaws A, B, pivoted together at C, each jaw having a serrated concave portion D oppositely disposed for gripping the stopper, and means to hold the jaws in a folded or collapsed position, whereby the jaws overlie one upon the other. Each jaw may have a flanged edge, and the securing means may comprise a spring-leaf clip E pivoted at one end to one of the jaws and having its other end E<SP>1</SP> hook-shaped for clipping over the flange of the other jaw. In a modification, the securing means may be provided by forming a cut-out on the inner edge of one jaw and joggling the so-formed lip to receive and retain the inner edge of the other jaw. The device may also be provided with a corkscrew, a shoe horn, and upon one jaw may be formed a knife-blade and a screwdriver edge, and upon the other a can opener.
Patent GB-377418-A (GB)
Title: Improvements in or relating to watering apparatus for tennis courts, gardens, or thelike
IPC: A01G25/09
Filed: 1931-07-17
Abstract: 377,418. Lawn sprinklers. BONNET, V., 48, Rue Etienne Desforges, Chatillonsous-Bagneux, Seine, France. July 17, 1931, No. 20517. Convention date, Aug. 7, 1930. [Class 69 (iii).] A travelling sprinkler comprises a winch rotated by a rotary sprinkler, around which is wound a cable one end of which is fixed to the ground so that winding of the winch causes displacement of the apparatus: On a frame 1, Figs. 1 and 2, carried by rollers 2 is mounted a reaction sprinkler fed from a hose 4. On the frame is mounted a winch 8 around which is wound a cable 9 provided with a hook 10. A tappet 17 on the sprinkler head engages a rod 14 pivoted at 11, and carrying a pawl 19 engaging a ratchet wheel integral with the winch. The stroke of the pawl is varied by adjusting the position of a stop 23 on a bar 25. A hold-on pawl 21 prevents return of the ratchet. The water inlet hose may be wound on a drum, Fig. 3, comprising a number of bars 29 one of which, 29a, is radially adjustable in a slot 33 to loosen the hose when wound and thus prevent jamming.
Patent GB-1018952-A (GB)
Title: Herbicidal compositions
Inventor: PFEIFFER RUDOLF KOLOMAN
IPC: C07C59/64
Filed: 1962-05-29
Abstract: A herbicidal composition comprises an admixture of 2-methoxy-3, 5, 6-trichlorobenzoic acid and/or a salt thereof and 2-methoxy-3, 6-dichlorobenzoic acid and/or a salt thereof together with a selective phenoxyaliphatic acid hormone weed killer and/or a salt thereof, the ratio of the amount of 2-methoxy-3, 5, 6-trichlorobenzoic and/or salt thereof to 2-methoxy-3, 6-dichlorobenzoic acid and/or a salt thereof lying in the range 1:1 to 4:1 calculated as free acid.  Specified salts are alkali metal, amine and alkanolamine salts.
Patent GB-149527-A (GB)
Title: Improvements in portable wood-working machinery
IPC: B27C9/04
Filed: 1919-08-21
Abstract: 149,527. Bergmann, D. Aug. 21, 1919. No Patent granted (Sealing fee not paid). Drilling-machines.-A machine comprising a plurality of tools for different woodworking operations is constructed on wheels and provided with an adjustable table and adjustable, gauges. The machine shown has a main frame 1 with shaft 2 driven from an electric motor 4. On the shaft 2 is the lower wheel of a band saw 7. A frame 13 is pivoted on the shaft 2 and can be adjusted as required at the other end. The frame 13 is provided with a spindle 14, driven by a belt from a shaft 2 and carrying a saw 15 at one end and a. milling tool or drill at the other. A table 20, vertically adjustable by means of rack and pinion gear, is provided at the side to support the work.
Patent GB-447459-A (GB)
Title: Improvements in or relating to aircraft wings
IPC: B64C3/00
Filed: 1935-07-19
Abstract: 447,459. Aircraft wings. DORNIER METALLBAUTEN GES., and DORNIER, C., Friedrichshafen, Germany. July 19, 1935, No. 20635. Convention date, Aug. 30, 1934. [Class 4] An aircraft sustaining wing comprises composite, hollow front and rear spars directly connected by bending and torsion-resisting, obliquely-disposed, trussed, lattice-work frames 21, the upper and lower surfaces of which conform to the profile of the wing. As shown, the spars are formed of channel members 13, 14 and 16, 17 and the nose of the wing is formed by connecting to the front spar a hollow member 15 adapted to resist bending and torsion stresses, the rear spar being connected by a similar hollow member 18 to a rigid rear part 19 of the wing and to an aileron 20. The spars and the frames 21 enclose triangular spaces adapted to be covered by rigid triangular plates 22 which abut on the frame edges and are fixed thereto by rivets &c. When the frames 21 are too narrow to provide for two adjacent rows of rivets &c., the abutting edges of two adjacent plates 22 may be waved or similarly formed in order that the rivets &c. may be in the same straight line. The member 18 may be formed to provide a slot in front of the aileron 20 or to conform to the shape of the forward end of the aileron.
Patent GB-874314-A (GB)
Title: Improvements in or relating to combine harvesters
IPC: A01D75/28
Filed: 1959-04-24
Abstract: 874,314. Combine harvesters. INTERNATIONAL HARVESTER CO. April 24, 1959 [April 28, 1958], No. 20859/60. Divided out of 874,313. Class 6(3). In the combine-harvester described in Specification 874,313 the grain-cleaning means comprises a rotatable drum 41 having internal helical tracks 43 to feed the grain towards a discharge end, the tracks having dams 44 at intervals along them to cause the grain to be carried around and to fall back across the central area of the drum through which an air-current is forced by a fan 45 in the opposite direction to the feed of the grain. The grain is fed into the drum by a chain-elevator 72 with pusher-plates 73 and an auger 75 working in a tube 76 with an orifice 77 at one end. A shaft 97 passes axially through the drum and carries the fan 45 and inclined plates 96 which are aligned with the dams 44 and deflect the falling grain towards the discharge end of the drum. The cleaned grain is delivered by a shoot 78 to an auger 79.
Patent GB-1410268-A (GB)
Title: Rotary positive-displacement machine
IPC: F01C1/352
Filed: 1973-05-01
Abstract: 1410268 Rotary positive-displacement machines L J Keller 1 May 1973 20682/73 Heading F1F In a machine of the sliding-rocking vane type e.g. an air compressor or motor, the vanes 91 pivot relative to one another and rotate on a pin 89 extending between rotor plates 65, 67 carrying rollers 69 that engage sealingly with concave lateral faces 105 of the vanes. Inlet apertures 35-38 and discharge openings 111 are formed in fixed plates 25, 27, 39, 41 and sleeve 93. The radially outer edges of the vanes either directly engage with the sleeve 93 or are furnished with shoes or sealing elements, Figs. 7 and 8 (not shown).
Patent GB-239046-A (GB)
Title: Vessel for preserving victuals by boiling
IPC: B65D45/28
Filed: 1924-09-03
Abstract: 239,046. Kretzmann, R. Sept. 3, 1924. Supports for articles to be heated; hot-plates. -A support for vessels for preserving food comprises a flanged plate 9 adapted to be placed directly over a gas flame, or in an inverted position in the hot-plate opening of a kitchen range..
Patent GB-495369-A (GB)
Title: Improvements relating to the installation of air filters in aircraft
IPC: B64D33/02
Filed: 1937-05-07
Abstract: 495,369. Propelling aircraft. VOKES, C. G. May 7, 1937, No. 20795. Divided out of 495,320. [Class 4] [Also in Groups XXVII and XXVIII] Air entering a scoop 4 having an opening 5 facing the direction of movement of an aircraft is delivered through a filter element 6 in the fuselage to a pipe 7 leading to the carburetter air intake or to an enclosed space in which the engine is housed. Rain &c. entering the scoop and any matter dislodged from the filter element, which is preferably pleated, are discharged through an opening 8 situated below the filter. In Figs. 3 and 4, the filters 22 are arranged in zigzag formation in the cowling ring of a radial-cylinder engine. Air entering through forwardly directed openings 30 passes from spaces 28 through the filters 22 into spaces 29 and thence into a chamber 21 having an outlet 23 leading to the air intake. Rain &c. striking inclined V- shaped members 26, which separate adjacent filter elements, is led into an annular chamber 32 and discharged through an outlet 33. Specifications 367,009, [Group XXVIII], and 401,291 are referred to.
Patent GB-685454-A (GB)
Title: Walking aid
Inventor: ROBB WILLIAM CRIBBES
IPC: A61H3/00
Filed: 1949-08-11
Abstract: 685,454. Walking aids. ENNA, Ltd. Aug.. 10, 1950. [Aug. 11, 1949] No. 20866/49. Class 132 (i). A walking aid comprises a trestle-like structure formed by two members, hinged together, each having two feet, stay means connected to both members intermediate their ends to limit their opening and closing and handles attached to one member and extending over the other between which a person may stand to obtain support therefrom. One member comprises front legs 2, top bar 3 and cross strut 4 and carries brackets 5 to which are pivoted legs 7 connected by cross bar 8 which form the other member. The feet of legs 2, 7, which have rubber footings 9, are joined by two spring- retracted link systems comprising links 11, 12 joined by pivot 14. Each link 11 has arcuate slots in which a pin member 16 on the adjacent link 12 moves thus limiting the relative movement of the link system and hence the front and rear members, and a spring 17 tending to draw the legs together is arranged between the overlapping ends of links 11, 12. Handles 19 are adjustably mounted in brackets 18 on the top bar 3 of the front member. In use, the handles 19 are lifted causing the apparatus to tilt about the front feet raising the rear feet off the ground so that they are retracted ; and then pressure is put on to the handles 19 causing the rear feet to take the weight and pivoting the front feet away from the rear feet. The link system is detachable from one or both legs so that by loosening and rotating the handles and folding the legs against one another the walking aid may be folded flat.
Patent GB-614154-A (GB)
Title: Improvements in or relating to the polymerisation of styrene and the like compounds
IPC: C08F2/00
Filed: 1946-07-12
Abstract: Styrene, nuclear substituted derivatives thereof or mixtures thereof, with or without a minor proportion of another vinyl compound, is polymerized in the liquid phase by heating between 90 DEG  and 180 DEG  C. in the presence of an alkyl or a -aryl substituted alkyl ester of an organic per-acid as polymerization catalyst. Specified styrene derivatives are methyl, dimethyl and chloro-styrenes and vinyl xylene.  Preferably another catalyst is also present and heating is carried out both within and outside the range 90 DEG -180 DEG  C.  Polymerization may be carried out in bulk or in aqueous dispersion and if desired, under super-atmospheric pressure. Specified esters are tert. butyl perbenzoate, (dimethylphenyl) methyl perbenzoate, (methyl diphenyl) methyl perbenzoate, tert. butyl peracetate, tert, butyl peranisoate and (dimethylphenyl) methyl peracetate.  Organic solvents, plasticisers and dyestuffs may be present during polymerization.
Patent GB-1159780-A (GB)
Title: Improvements in and relating to Newspaper Dispensers.
Inventor: VETTERLI ADOLF
IPC: G07F11/52
Filed: 1968-05-03
Abstract: 1,159,780. Dispensing articles. A. YETTERLI. 3 May, 1968 [5 May, 1967; 19 Sept., 1967], No. 21007/68. Heading A4T. A newspaper dispenser comprises a casing 3 mounting by struts 15, 16 a cylindrical hub 22 with spaces 28 for papers 30 formed by radial partitions 24, the spaces being open on a casing door side for loading and open outwardly for delivering the paper through opening 35 in a trough 33 to a shoot 41. The hub is rotated past ratchet 49 by irreversible gears 53, 55, 57 and a manual crank. The number of papers at 47 is indicated through a window by pointer 67. When all papers are dispensed a drum pin 79 moves spring rod 77 to release a flap 75 which closes a money slot and shows an "empty" sign at 70. As an alternative, the hub may be motor driven and the hub rotating shaft 103 prevented from rotating by cam 101 engaging roller 99. Coin insertion unlocks gear 89 whereby the cam lifts crank 95 and rack 91. The partitions may be provided with protuberances to prevent sticking of papers.
Patent GB-1459383-A (GB)
Title: Flame-retardant polypropylene composition
IPC: C08K3/22
Filed: 1975-05-16
Abstract: 1459383 Flame-retardant polypropylene compositions CHEMIE LINZ AG 16 May 1975 [20 May 1974] 21040/75 Heading C3P Flame-retardant compositions comprise (1) polypropylene as the major constituent, (2) 2 to 7 weight per cent of 1,3,5-tris(2,3-dibromopropyl) - 2,4,6 - trioxohexahydro - s - triazine and (3) 0À5 to 2 weight per cent antimony trioxide. The compositions may contain conventional fillers, pigments, stabilizers and blowing agents.
Patent GB-382628-A (GB)
Title: Improvements in travelling grates
IPC: F23H11/00
Filed: 1931-07-23
Abstract: 382,628. Travelling grates. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, and WOODFIELD, F. W., 27, Madrid Road, Barnes, both in London. July 23, 1931, No. 21063. [Class 51 (i).] In a travelling grate for furnaces the grate bars are carried by transverse carrier bars mounted to rock about pivots, and are so shaped as to be permitted both a transverse rocking movement and a slight longitudinal movement relative to the carrier bars. Between opposite links B of the driving chains are pivotally mounted transverse carrier bars C formed with oval orifices D to receive pivots E formed on the lower surfaces of the grate bars F which are thus loosely supported by adjacent carrier bars with freedom for transverse rocking and slight longitudinal movement. Lugs G limit the longitudinal movement, and the grate bars are arranged to break joint. Any grate bar Fl may be removed at the front of the grate by moving one of the transverse carrier bars C into the position C<1> to clear the pivot E. Lateral projections I are formed on the bars H at the side of the grate to provide an air seal with the side frame K of the furnace. Rocking movement of the carrier bars C is limited by the surfaces of the links B. Alternate carrier bars are retained by cotters L the pivots of the intermediate bars merely projecting into openings in the links B.
Patent GB-257618-A (GB)
Title: Manufacture of vat-dyestuffs
IPC: C09B3/06
Filed: 1926-08-26
Abstract: 257,618. I. G., Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Br³ning). Aug. 26, 1925, [Convention date]. Benzanthrone dyes; Bz1-benzanthronylethers. -Bz1-Benzanthronylethers, or substitution products thereof not substituted in the 2-position, are converted into vat dyestuffs by treatment with alkaline condensing agents; the hydrocarbon residue of the ether group may be aliphatic or aromatic, for example, methyl, phenyl, or cresyl, and may also contain substituents. The ethers may be obtained by action of Bz1-halogen-benzanthrones, such as Bz1-brom-benzanthrone, on alkali metal salts of alcohols or phenols such as methyl alcohol, phenol, or cresol. According to examples the following ethers are subjected to fusion with caustic potash and alcohol :-benzanthronyl-Bz1- methyl- or phenyl-ether, brombenzanthronyl-Bz1- phenylether obtained from dibrombenzanthrone (Specification 20837/06, [Class 2, Acids and salts, Organic]), 6-amino-benzanthronyl-Bz1-phenylether (obtained by nitrating the Bz1-phenylether in glacial acetic acid and reducing the nitro compound with sodium sulphide), benzanthronyl-Bz1- phenylether in the form of the crude melt obtained by heating Bz1-brombenzanthrone (made by brominating benzanthrone in water) with phenol, potassium acetate and cuprous bromide. The resulting dyestuffs are purified by precipitation from concentrated sulphuric acid and dye cotton from the vat in violet to bluish-grey shades. The Specification as open to inspection under Sect. 91 (3) (a) refers specifically to the use of Bz1-benzanthronylethers in which the ether group is anthraquinonyl or benzanthronyl. This subjectmatter does not appear in the Specification as accepted.