baber/WOPTO huggingface dataset:
Patent GB-453886-A (GB)
Title: Valve amplifier for wide frequency bands such as are required in television
IPC: H04B1/16
Filed: 1934-12-20
Abstract: 453,886. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. Dec. 20, 1934, No. 36494. Convention date, Dec. 20, 1933. [Class 40 (v)] In an amplifier for television and like wideband signals modulated on a carrier wave, low inter-stage coupling impedances are employed, and reaction is provided by a connection from the plate impedance (aperiodic or semi-aperiodic) of one valve to the grid of an earlier valve. As shown in Fig. 1, the second valve of a resistance-capacity-coupled pair has a resistance 4 in its plate circuit, a slider on which is connected through a condenser 6 to the grid of the first valve. The amplifier may constitute the intermediatefrequency stage of a superheterodyne receiver. The resistance 4 may be replaced by a coil 7 damped by a resistance 9 and tuned by its own capacity or by a condenser 8 to a desired frequency band, which should coincide with the optimum frequency of the amplifier without reaction. A further two-stage amplifier may be provided having a different optimum frequency; and the reaction may step over four valves. In Fig. 2, reaction is taken from a resistance 4 in the output circuit of an intermediate-frequency amplifier 24 to the oscillator grid 25 of a frequency-changing valve V by which the oscillation generated in the circuit 19, 20 is mixed with the incoming oscillation applied from the aerial 12 to the grid 17. As explained in Specification 450,247, owing to the valve V being already in oscillation at ultra-high frequency, there is less tendency for the reaction coupling 4, 6 to produce self-oscillation at the intermediate frequency. Alternatively, this advantage may be gained by conveying the reaction voltage to the grid of a valve oscillating at an auxiliary frequency. The Specification as open to inspection under Sect. 91 states that the reaction may take place over an odd number of valves if transformer couplings such as those described in Specification 446,346 are employed. It also states that the reaction system may be used for television signals not modulated on a carrier wave. This subject-matter does not appear in the Specification as accepted.
Patent GB-1201855-A (GB)
Title: Improvements in or relating to tubular heat exchangers
Inventor: HAWKINS RONALD JAMES
IPC: F28F9/013
Filed: 1968-07-31
Abstract: 1,201,855. Heat exchanger tube supports. BABCOCK & WILCOX Ltd. 31 July, 1969 [31 July, 1968], No. 36565/68. Heading F4S. In a heat exchanger in which a tube bank consists of a plurality of concentric helices 7a, 7b, 7c, spacer means between the helices comprises radially extending rows, e.g. A, B, C, D, Fig. 2, of spacer bars, e.g. 13, 14, 15. The bars in each row are spaced from each other by distancepieces, e.g. 9b, 9c, which are spaced longitudinally along the spacer bars and are relatively staggered in adjacent spaces between the bars, as shown in Fig. 3. Each distance piece is welded at one end to a spacer bar and bridges the gap between that bar and the next, being in abutment either with that next bar, as shown in Fig. 3, or alternatively (Fig. 4) with the tube passing through said next bar.
Patent GB-522849-A (GB)
Title: Improvements in processes for reducing the temperatures in mines and devices for accomplishing the same
IPC: E21F3/00
Filed: 1938-12-19
Abstract: 522,849. Ventilating mines. UNIVERSITY PATENTS, Inc. Dec. 19, 1938, No. 36969. Convention date, Aug. 23. [Class 137] Air for ventilating and cooling a mine is compressed in a blower, 1, cooled in a cooling system 2 and delivered through a conduit 3 to an air engine 5 which drives a dynamo 6, the current from which is led by cables 8 to the main electric supply 10. The compressed air due to its expansion in driving the engine 5 is cooled and delivered to the mine working 7, the used air escaping through a shaft 9. Thus the mine is cooled and the energy of the compressed air recovered. Specification 421,624 and U.S.A. Specification 2,069,269 are referred to.
Patent GB-363123-A (GB)
Title: Glove structure
IPC: A41D19/02
Filed: 1930-12-08
Abstract: 363,123. Gloves. JOHANSON, C. H.. 605, East 40th Street, Los Angeles, U.S.A, Dec. 8, 1930, No. 37013. [Class 141.] To eliminate the thumb-hole and thumb-seam, a glove is formed by stitching together two handshaped blanks, which may be separate, or formed by folding the blank shown in Fig. 6 about its centre line 26-26. In some cases the thumb-pieces 5, Fig. 6, are separate and stitched to the blanks. Fourchettes are formed from a single length of material 9, Fig. 4, which may extend to the base of the wrist, as shown, or from the tip of the forefinger to the tip of the little finger.
Patent GB-950344-A (GB)
Title: Improvements in or relating to packing containers
Inventor: FOSTER HAROLD
IPC: B65D21/02
Filed: 1961-10-17
Abstract: 950,344. Stackable and nestable containers. BIBBY & BARON Ltd. Nov. 15, 1962 [Oct. 17, 1961], No. 37139/61. Heading B8P. A fibre-glass packing container closed by a lid 2 tapers slightly from top to bottom to facilitate nesting and has a hinged flap 7 in one of its sides whereby the container can be filled or emptied. Five legs 3 are provided on the base to assist transportation by fork-lift truck and also to ensure that when the containers are nested within each other, the inner one projects above the outer one for easy removal. The lid 2 has raised socket portions 4 corresponding in position to the five legs 3 and is clipped on to the container by a rim 5 on the lid co-operating with a rim 6 on the container. In an alternative embodiment, the container has only four legs, the legs being reinforced by ribs extending therebetween, the lid being socketed to correspond. The container has a reinforcing strip of mild steel round the upper rim. A pair of latches secure the hinged flap 7.
Patent GB-1009261-A (GB)
Title: Improvements in and relating to fluid pressure master cylinders
Inventor: CHOUINGS LESLIE CYRIL
IPC: B60T11/16
Filed: 1961-10-17
Abstract: 1,009,261. Hydraulic brakes; pistons. AUTOMOTIVE PRODUCTS CO. Ltd. Oct. 12, 1962 [Oct. 17, 1961], No. 37211/61. Headings F2F and F2T. In order to shorten the length of the cylinder 1 of a master cylinder for hydraulic braking systems a piston extension 10 projects outwardly of the cylinder bore when the piston 4 is in its fully retracted position, the extension having a smooth periphery and passing through a bearing formed by a bush 11 and sealing means 12 being provided between the bush and the rear of the piston to prevent leakage of fluid around the extension periphery. The piston extension 10 is surrounded by a sleeve 16 supported by the cylinder and the sleeve incorporates a stop 19 for limiting the movement of the piston to the retracted position. The sealing means 12 is provided with a double lip loaded by a compression spring 13. A modified master cylinder of the tandem type is disclosed in the Specification (Fig. 4, not shown).
Patent GB-624651-A (GB)
Title: Improvements in or relating to an arrangement for a telephone substation set
IPC: H04M1/08
Filed: 1946-12-18
Abstract: 624,651. Couplings. KELLOGG SWITCHBOARD & SUPPLY CO. Dec. 18, 1946, No. 37252. Convention date, July 13, 1945. [Class 38 (i)] [Also in Group XXXIX] In a telephone substation set (see Group XXXIX) the wiring comprises screw and pinsocket terminals interconnected by preformed strip conductors. A screw terminal comprises a strip, shaped as shown in Figs. 3A and 3B, and retained within a rectangular opening in the insulator 9 by the engagement of barbs 54 and the longitudinal edges of the flat strip portion 30 with opposite surfaces of the insulator. A pin-socket terminal, Figs. 8, 9, has the form of a split tube and comprises a tab 51 located within a positioning recess in the upper surface of the insulator 9 and a portion 52 which is flattened after insertion to engage the lower surface and prevent withdrawal. The preformed strip conductors 47, Fig. 7, may be punch formed from a single sheet and left connected together until placed in position over the terminals.
Patent GB-1045470-A (GB)
Title: Improved material stitching and cutting device
Inventor: BENNISON MICHAEL NEWSTEAD
IPC: D05B73/12
Filed: 1964-09-14
Abstract: 1,045,470. Sewing machines. W. J. CLARKSON Ltd. July 22, 1965 [Sept.14, 1964], No. 37411/64. Addition to 978,872. Heading D1G. Apparatus for simultaneously sewing and cutting a workpiece comprises upper and lower plates, a guide track in the lower plate, a fixed guide element entering the guide track and being formed with a needle-passing hole and a knife-passing slot, and a presser foot mounted above said element and adapted to allow passage of a needle and a knife through said hole and slot respectively. Fabric layers 7, 8 are clamped between an upper plate 2 and a lower plate 3, the plates being hinged together. A plate 13 enters an aperture in the upper plate for fulling the upper layer 7. A guide slot 5 in the lower plate is engaged with a guide element 16 rigid with the thrust plate 19. Element 16, which has a needle-passing hole 20 and a knife passing slot 21 with a bevelled edge 22 so-operating with a knife 26, is substantially semi-circular, the curved edge engaging the outer edge of slot 5. The flat edge of element 16 engaging the miner edge of slot 5 has a forward coupled clearance face 33, Fig 5 (not shown), the needle hole 20 being positioned closely adjacent the junction of said face and said flat edge. The presser foot 23 has a nylon pad 37 engaging the edge of plate 2 adjacent slot 5. The lower face of plate 3 has an insert 35 adjacent slot 5 for engagement by the feed dog 36. The outer edge of plate 3 is engaged by a knurled roller 29 carried by a spring-biased plunger 30.
Patent GB-1161227-A (GB)
Title: Incremental Resistance Module.
IPC: H01R29/00
Filed: 1966-08-22
Abstract: 1,161,227. Resistors. CLAROSTAT MFG. CO. Inc. 22 Aug., 1966 [9 Sept., 1965], No. 37483/66. Heading H1S. A variable impedance unit comprises at least one box 11 carrying three or more resistors 75-79 input and output terminals 49, 50 being connected to conducting side plates 41, 42 between which are disposed conducting inserts 53-56 between which the resistors are connected in series, either of the side plates 41, 42 being connectible to any one of the inserts 53-56 by insertion of a conducting plug contact 82 in the gap between them. The number of resistors in series between the terminals is controlled by the positioning of the plug 81, 82. The conducting inserts 53-56 and the side plates 41, 42 are carried on an insulating plate 37 having apertures a-f which register with apertures a-f, in the front of the box 11, through which the conducting plug contact 82 is inserted. A number of boxes 11 with their resistor sets in decade steps may be slidingly secured together with channels 20, 21 on one box holding projecting tongues on an adjacent box.
Patent GB-992831-A (GB)
Title: Improvements in means for changing the casting ladles of continuous casting plant
IPC: B22D11/10
Filed: 1963-09-25
Abstract: 992,831. Foundry plant; continuous casting machines. SCHLOEMANN A.G. Sept. 25, 1963 [Oct. 20, 1962], No. 37692/63. Heading B3F. Ladles 4, 6 are carried on arms 5, 7 rotatable about a vertical axis 13 so that a continuous casting mould 2 may be continuously supplied. Chill moulds 9 are located within the range of the ladles so that the ladles may be discharged thereinto in an emergency.
Patent GB-935313-A (GB)
Title: Improvements relating to the production of nitriles
IPC: C07C255/24
Filed: 1961-10-20
Abstract: One or more of malononitrile, dichloromalononitrile, dibromomalononitrile, N,N-dichloro-b -aminopropionitrile, N,N-dibromo-b -aminopropionitrile are prepared by reacting bromine or chlorine with b -aminopropionitrile in the presence of an acceptor for the hydrogen halide which is also formed.  The preferred temperatures are -20 to 30 DEG C. for the N,N-dihalo-b -aminopropionitriles; 70-150 DEG C., e.g. 70-120 DEG C. for the dihalomalononitriles; 200-350 DEG C., e.g. 200-250 DEG C. for malononitriles.  The reactant may be mixed at -20 to 30 DEG C. before heating to the higher temperatures.  Alternatively a N,N-dihalo-b -aminopropionitrile may be heated with chlorine or bromine to produce a dihalomalononitrile.  Acceptors for the hydrogen halides include powdered limestone, magnesium carbonate, soda ash, sodium bicarbonate, barium carbonate, pyridine, tributylamine, tricyclohexylamine, basic ion exchange resins. The reactions may be carried out in a solvent, e.g. hexane, cyclohexane, benzene, toluene, chloroform, carbon tetrachloride. Specification 934,634 and U.S.A. Specifications 2,788,356, 2,794,824 and 2,889,335 are referred to.
Patent GB-1014250-A (GB)
Title: Improvements in ducted fan powerplants
IPC: F02K1/56
Filed: 1964-09-16
Abstract: 1,014,250. Thrust deflectors. GENERAL ELECTRIC CO. Sept. 16, 1964 [Sept. 18, 1963], No. 37813/64. Heading B7G. A ducted fan 14 for aircraft propulsion is mounted on a centre-body 12 in a nacelle 10 having a rectangular section containing a thrust deflector formed by a cascade of louvres, and ending in a variable nozzle 11. The cascade is in two portions 19, 20, pivoted respectively at 21, 22, which have cut-outs 29, 30 (Fig. 3) shaped to fit the centre-body 12. The cascade deflects the flow through an opening 18 in the bottom of the nacelle, normally closed by doors 32, 33 and the resultant thrust direction can be varied by positioning the cascade portions between the fully operative and fully retracted positions, and by pivoting the louvres, e.g. to give a reverse thrust component. The louvres may be pivoted in the retracted position so that they form a smooth continuous surface. Adjustable louvres may also be provided in the opening 18. The fan is driven by tip turbine blades 15, and the nacelle is pylon mounted on the aircraft wings or fuselage.
Patent GB-1358670-A (GB)
Title: Connector for sparking plugs of internal combustion engines
IPC: H01T13/20
Filed: 1972-08-14
Abstract: 1358670 Sparking-plug connectors KABELUND METALLWERKE GUTEHOFFNUNG SHUTTE AG 14 Aug 1972 [25 Aug 1971] 37831/72 Heading H2E A spark-plug connector comprises a contact 6, connected to the cable 1 via a resistor 5; a body 2 of heat-reistant thermosetting resin, having four fingers 12 with ribs 8 which grip the cable 1; an outer casing 3 of similar material ; a sealing body 4 of elastomeric material; and, optionally a metal interference screen 7. In assembly, first the body 2 is fitted over the prepared cable ends, then the body 3 is slid along the cable 1 until hooks 9 on the fingers 12 snap over a shoulder, and finally elastomeric material is introduced to form the body 4. The body 4 fills up all the spaces inside the connector to prevent creepage currents, secures the resistor 5, prevents kinking of the cable 1, narrows the aperture 10 to provide a firm fit over the sparkplug, and seals both ends of the connector against moisture.
Patent GB-1098175-A (GB)
Title: Improvements in or relating to press anvils
Inventor: BEARD JACK HERBERT
IPC: B21J13/06
Filed: 1963-09-26
Abstract: 1,098,175. Press manipulators. DAVY & UNITED ENGINEERING CO. Ltd. Sept. 9, 1964 [Sept. 26, 1963], No. 37857/63. Heading B3H. Manipulating apparatus for moving a press anvil 12 comprises a pair of double-acting hydraulic piston and cylinder assemblies 15, 15A arranged on opposite sides of the press centre 14 and means 18, 18A for coupling these assemblies to the anvil. The latter is connected by inter-engaging abutments such as 24, 25 with slidable floor plates 26, 26A having recesses 27, 27A adapted to receive spring or counterweight biased coupling pins 18, 18A carried by cross-heads 17, 17A coupled to the respective pistons 16, 16A. During a transfer movement of the anvil one coupling pin 18 is withdrawn by engagement of its roller 21 with a fixed wedge 32 whilst the opposite pin 18A is engaged. Pressure oil is supplied by pump 36 through solenoid-actuated valves 40, 44, 45 controlled by limit switches 35, 35A actuated by strikers 34, 34A on the respective cross-heads. Interengaging abutments 28, 30 are also provided between the cross-heads and the floor plates 26, 26A. The coupling pins 18, 18A may be of flat or circular form and may alternatively be operated in both directions by a cam track.
Patent GB-989201-A (GB)
Title: Ethylenically unsaturated hydroxy esters
IPC: C08F20/40
Filed: 1962-10-08
Abstract: The invention comprises ethylenically unsaturated hydroxy esters of formula <FORM:0989201/C2/1> where R and R1 are ethylenically unsaturated aliphatic, cycloaliphatic, aromatic and chlorinated aromatic radicals, n is 0 or an integer from 1-10, and A is a methylene or carbonyl group, specifically 3-acyloxy-2-hydroxypropyl and 3 - methacryloxy - 2 - hydroxypropyl methacrylate, 3 - methacryloxy - 2 - hydroxypropyl crotonate, 3 - acryloxy - 2 - hydroxypropyl acrylate, 3 - acryloxy - 2 - hydroxypropyl - 1 - allyl and 1 - crotonyl - 2 - hydroxypropyl allyl ethers and 3-acryloxy-2-hydroxypropyl cinnamate. The compounds are prepared by reacting an ethylenically unsaturated monobasic carboxylic acid and an epoxy compound <FORM:0989201/C2/2> with a t-amine catalyst and an inhibitor for vinyl polymerization at a temperature of up to 200 DEG C.  An inert solvent e.g. xylene and toluene may be present and the reaction may take place in two heating stages of up to 100 DEG  C., and from 80 DEG  C. to 200 DEG  C., or alternatively the epoxy compound may be added dropwise to the heated acid, inhibitor and catalyst.  The unsaturated acids may be acrylic, methacrylic, crotonic and cinnamic acids, and epoxy compounds with a terminal epoxy group are listed. The products may be homo- or co-polymerized with initiators such as benzoyl peroxide, and comonomers mentioned are styrene, vinyl toluene, acrylates and methacrylates.ALSO:Ethylenically unsaturated hydroxy esters of formula <FORM:0989201/C3/1> where R and R1 are ethylenically unsaturated aliphatic, cycloaliphatic, aromatic and chlorinated aromatic radicals, n is 0 or an integer from 1-10, and A is a methylene or carbonyl group, are polymerized or copolymerized, e.g. with styrene, vinyl toluene, acrylates or methacrylates, by heating with a peroxy polymerization catalyst.  Specific compounds claimed are 3-acryloxy-2-hydroxypropyl and 3-methacryloxy -2-hydroxypropyl methacrylates, 3-methacryloxy -2-hydroxypropyl crotonate, 3-acryloxy -2-hydroxypropyl acrylate, 3-acryloxy-2-hydroxypropyl - 1-allyl ether, 1 - crotonyl-2-hydroxypropyl allyl ether, and 3-acryloxy-2-hydroxypropyl cinnamate (see Division C2), and examples describe the homopolymerization of 3-acryloxy-2-hydroxypropyl cinnamate and 3-methacryloxy-2-hydroxypropyl, and the copolymerization with styrene of 3-acryloxy-2-hydroxypropyl cinnamate, and 3-methacryloxy-2-hydroxypropyl crotonate.
Patent GB-1116753-A (GB)
Title: Vortex compressor
IPC: F04D23/00
Filed: 1966-08-24
Abstract: 1,116,753. Circumferential-flow compressors and vacuum pumps; silencing gaseous flow. ROTRON MANUFACTURING CO. Inc. Aug. 24, 1966 [Dec. 29, 1965], No. 37993/66. Headings F1B and F1C. A circumferential-flow (vortex) gas pump is controlled by an adjustable bleed valve connected between the exterior of the pump casing and either the discharge chamber (in the case of a compressor) or the inlet chamber (in the case of a vacuum pump) or both. The compressor shown in Fig. 1 comprises a toroidal pumping chamber formed partly by an annular unbladed stator channel 22 and partly by an impeller 26 carrying blades 25. The channel communicates through an inlet opening (not shown) and a discharge opening 33 with an annular chamber 18 which may be bounded by sound damping material 37 and perforated retaining plates 38. The chamber 18 is divided by a pair of radial partitions into inlet and discharge halves, the inlet half being provided with an inlet branch (not shown) while the discharge half is provided with a discharge branch 35 and a bleed duct 58 leading to atmosphere. A bleed valve 57, provided with a screwdriver slot 75 for adjusting its position, allows the flow through the bleed duct 58 to be adjusted to reduce the discharge pressure to the desired value. An alternative bleed duct similar to the bleed duct 58 is provided in the inlet half of the chamber 18 but is sealed by a plug when not used. When the machine is used as a vacuum pump, the bleed valve 57 is mounted to control the flow through this alternative bleed duct. Automatically controlled bleed valves, operated by a motor or other mechanical connections, may be provided.
Patent GB-365273-A (GB)
Title: Process for the manufacture of folding boxes by means of a shaping block which is forced into a shaping mould
IPC: B31B50/00
Filed: 1930-12-17
Abstract: 365,273. Making boxes. UNIVERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MœLLER & CO., 48, Zwickauerstrasse, Dresden, Germany. Dec. 17, 1930, No. 38073. Convention date, Sept. 24. [Class 18.] In a machine for making folding boxes in which a shaping block enters a shaping mould, the block and the mould move towards each other, seize together the blank which is independently supported between them, and move apart when the folding operation is completed. A paper blank, after removal from a magazine 1 by a suction head 2, is seized by a roller 9 and a half roller 8, fed through conveyer rollers 17, 22 to a table 25 where it rests against a stop over an aperture 27. The shaping block 28 and the shaping mould 29 or an extension rod 36 connected thereto are connected to discs 34, 35 and 39, 40 respectively in such manner that they receive parallel crank motions, the one being 180‹ out of phase with respect to the other due to the two sets of discs rotating in opposite directions. The initial folding movement is therefore slow, but it accelerates as the folding progresses. The block passes right through the mould, pushing the blank past shaping surfaces 30 and out of the lower end of the mould where it is held and prevented from returning with the block by a spring-controlled removal member on the lower end of the mould, the hooked ends of this member riding in grooves in the block on the return movement. Removal of the box from the end of the mould is effected by two arms 50 which are drawn together by a spring and rotate on a shaft 54 over cam surfaces on a stationary disc, the arms closing on the box and seizing it just as they reach the lower end of the mould and opening to deposit the box against a stop 61 on a conveyer band 60. The suction head 2 is operated through levers one of which carries a pin 6 riding on a cam surface on a shaft 15, this. shaft also driving the various parts of the machine as shown. The upper one of the rollers 22 may form an adhesive roller and be fed from an adhesive container 24. The discs 34, 35, 39, 40 may be elliptical in shape.
Patent GB-1404755-A (GB)
Title: Fibre reinforced cementitious products
IPC: C04B28/02
Filed: 1971-08-16
Abstract: 1404755 Cementitious compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 1 Aug 1972 [16 Aug 1971] 38286/71 Heading C1H A reinforced product comprises 0À5 to 20 parts of fibres of a synthetic polymer; 1 to 20 parts of a non-fibrous synthetic polymer and 100 parts of an hydraulic cement, e.g. a hemihydrate, fibres specified are polyamides, polyesters and polyolefines; the non-fibrous being p.v. acetate, styrene-butadiene, neoprene polystyrene and polymethyl methacrylate thermoplasts, and urea-HCHO, epoxy and unsaturated polyester resins as thermosets. Nylon fibres 1 cm. long of 3 denier are used, and may be individually and randomely or not orientated, combined as a thread, or as woven fabrics or mats.