baber/WOPTO huggingface dataset:
Patent GB-1447339-A (GB)
Title: Crotonamides
IPC: A01N37/36
Filed: 1975-04-21
Abstract: 1447339 Crotonamide ROUSSEL UCLAF 21 April 1975 [22 April 1974] 16311/75 Heading C2C The invention comprises compounds of the formula in which R 1  represents an adamantyl, bornyl or 5<SP>1</SP>,6<SP>1</SP> - dihydroendo - 5<SP>1</SP> - dicyclopentadienyl group; or a saturated or unsaturated cycloalkyl group having from 3 to 8 carbon atoms, optionally substituted with an alkyl group having from 1 to 6 carbon atoms, a hydroxyl group, an alkoxycarbonyl group in which the alkyl group has from 1 to 6 carbon atoms or an atom of chlorine; and R 2  represents an alkyl group having from 1 to 3 carbon atoms. The compounds may be prepared by reacting together compounds of the formulµ in the presence of an acid agent. The amides used as starting materials may be prepared by reacting diketene with the appropriate amine.
Patent GB-458028-A (GB)
Title: Improvements in the manufacture and production of water-soluble condensation products having tanning action
IPC: C14C3/20
Filed: 1935-06-05
Abstract: Tanning-agents are prepared by condensing with formaldehyde and aromatic sulphonic acids, products obtained from insoluble substances having at least one phenolic hydroxy group and formaldehyde-bisulphite or formaldehyde and sulphurous acid salts. The tanning agents also have plumping action and may be used, after acidification with, for example, formic or sulphuric acid, for tanning reptile skins, unhaired hides or upper leathers. In modifications of the process of manufacture, (a) aromatic carboxylic acids are used instead of aromatic sulphonic acids; (b) hydroxy compounds of the benzene or naphthalene series are used with the aromatic sulphonic acids; (c) the products are further treated with urea and formaldehyde.  In examples: (1) the product obtained by reacting together formaldehyde, calcined sodium sulphite and 4 : 4<1>-dihydroxydiphenylsulphone is condensed with formaldehyde and cresolsulphonic acid, b  : b -di(4-hydroxyphenyl)propanesulphonic acid, a formaldehyde-cresolsulphonic acid condensation product, a formaldehyde-naphthalene sulphonic acid condensation product, a formaldehydecresolsulphonic acid condensation product together with cresol, b  : b -di(4-hydroxyphenyl)-propane, or together with cresol and dihydroxydiphenylsulphone and b  : b  - di(4 - hydroxyphenyl)propanedisulphonic acid together with b  : b -di(4-hydroxyphenyl)propane; (2) the product obtained by reacting together formaldehyde, calcined sodium sulphite and 4 : 4<1>-dihydroxy - 3 : 3<1> - dimethyldiphenylsulphone is condensed with formaldehyde and o-hydroxybenzoic acid; (3) the product obtained by reacting together formaldehyde, sodium sulphite and 4 : 4<1> - dihydroxy - 2 : 2<1> - dimethyldiphenylsulphone is condensed with formaldehyde and phthalic acid; (4) a product obtained by reacting together formaldehyde-bisulphite and humic acid is condensed with a formaldehyde-naphthalenesulphonic acid condensation product or a formaldehyde cresol sulphonic acid condensation product together with cresol or naphthol.  Insoluble condensation products containing a phenolic hydroxy group obtained from phenol and formaldehyde, b  : b -di(4-hydroxyphenyl)propane and humous coal may be reacted with formaldehydebisulphite and used as starting material.  Condensation products of phenol, cresols and xylenols with aldehydes and ketones, dihydroxydiarylmethanes and dihydroxy diarylsulphides are also examples of insoluble phenolic compounds which may be used.  The following aromatic sulphonic acids are mentioned: naphthalene mono and polysulphonic acids, chlorcresolsulphonic acids, sulphanilic acid, naphthylaminosulphonic acids and chlornaphthalenesulphonic acids. 4-Chlor-2-hydroxybenzoic acid, terephthalic acid, naphthalic acid and 2 : 2<1>-dihydroxydiphenyl methane-4 : 4<1>-dicarboxylic acid are specified carboxylic acids. According to the Provisional Specification any aldehyde or ketone of low molecular weight may replace the formaldehyde.
Patent GB-1392329-A (GB)
Title: Shuttleless mechanical loom
IPC: D03D41/00
Filed: 1972-04-10
Abstract: 1392329 Shuttleless looms SOC ANON FONDERIES ET ATELIERS MICHEL VAN DE WIELE 10 April 1972 [9 April 1971] 16422/72 Heading D1E A superposed shed double plush loom wherein weft gripper needles 1 enter the superposed sheds from opposite sides and take the wefts 20 with them as they retract has, at the respective weft gripping side a cam operated lever 13 to open the jaws 2, 4 of the gripper 1, a solenoid operated clamp 22 which clamps the weft extending to a suction tube 33, a weft retractor 29 and a circular cutter 34. The clamp 22 opens to allow picking to take place and beat-up causes the weft to be cut by the cutter 34 and the severed end extending to the supply to be drawn into the suction tube 34. The retractor 29 then operates to partially withdraw the weft end from the tube ready for the next pick. At the other side of the loom a pivoted lever 5 opens the jaws 2, 4 to release the weft.
Patent GB-1278161-A (GB)
Title: Method and apparatus for producing hollow articles
IPC: B29C43/12
Filed: 1970-04-07
Abstract: 1278161 Moulding hollow articles ELECTROSTATIC EQUIPMENT CORP 7 April 1970 [7 April 1969] 16518/70 Heading B5A A method of moulding hollow articles on an inflatable bladder in which electrically charged particles are caused to attach to the bladder and fuse into a coherent article from which the bladder is later detached. A chamber 30 contains an inflatable form 116, to which material is supplied from a hopper 20 through a conduit 21. The particulate material passes through the bottom of chamber 30 into an air chamber 42 where it is blown through valves 48 and guns 44 back into chamber 30 and over the form. The form 116 is supported on a tube 54 having an air hose 60 connected to a pressure source. The tube is rotatably supported on a block 52 which moves on track 50, a rack 58 andpinion 56 being provided to rotate the form as the block moves. A voltage source 64 has one pole connected to guns 64 and the other to a contact assembly 62 which in turn is connected to the form 116. In this way, particles passing through the gun become charged and are attracted to the form 116 to provide a layer of material thereon. The coating chamber forms part of a continuous system in which the forms are positioned on a continuous conveyer and move through a pre-heating oven to the coating chamber then through an oven and a cooling chamber to a device where the moulded articles are separated from the moulds. The material may be in the form of a fluidized bed of charged particles through which the form is passed to be coated. Materials which may be used are vinylidenes and vinyls (e.g. polystyrene and polyvinylchloride), olefines (e.g. polyethylene, polypropylene) cellulosics and polyamides such as nylon.
Patent GB-773348-A (GB)
Title: Improvements in or relating to automatic ventilating air filters
IPC: B01D39/14
Filed: 1955-06-09
Abstract: 773,348. Agglutinated fibrous materials. AMERICAN AIR FILTER CO., Inc. June 9, 1955 [Aug. 4, 1954], No. 16588/55. Drawings to Specification. Class 140. [Also in Groups XVI and XXVIII] A web of resilient resin impregnated fibre glass capable of being compressed to about one twentieth of its normal thickness of between one and three inches when serving to filter gases (see Group XXVIII) is made by feeding glass fibres from a furnace reciprocated axially and externally of a rotating drum and simultaneously spraying with a thermosetting resin adhesive. The cylindrical mat so formed is removed from the drum by slitting axially and is then stretched so as to increase its length about 30 times whilst its width is decreased to about 70 per cent. Finally the long web is heated to set the resin.
Patent GB-1219593-A (GB)
Title: Improvements in or relating to the manufacture of ice cream sandwiches
IPC: A23G9/28
Filed: 1968-04-06
Abstract: 1,219,593. Ice cream sandwiches. J. P. HINDLEY (Eskimo Pie Corp.). 6 April, 1968, No. 16671/68. Heading A2B.  Ice cream sandwiches are made by depositing edible wafers at spaced intervals on a conveyer which passes under an extrusion nozzle and then through a freezing chamber, a frozen dessert mix being continuously extruded from the nozzle in a plastic although shape retaining condition, the extruded material being periodically severed, for example by means of a heated wire cutter, such that the severed material falls on to the wafer, and the severed material and wafer then pass through the freezing chamber to completely harden the sandwich. A further wafer, or other material, may be deposited prior to passing through the freezing chamber, whereby a multi-layer sandwich may be obtained. Fig. 1 shows a suitable apparatus for carrying out the invention, conveyer belt 21 having successively deposited upon it a wafer, W, from magazine 33, ice cream, I, from nozzle 23, which is severed by heated wire elements 56, and a further wafer from magazine 33<SP>1</SP>, prior to entering freezing chamber 20. Additional nozzles and magazines may be supported from free supports 32 to form various multi layer sandwiches. The deposition of the wafers and severing of the ice cream is controlled by means of switches 54 activated by cams on shaft 26 driven by the chain 24 of the conveyer belt.
Patent GB-887413-A (GB)
Title: Carbocyclic cyanoketones
IPC: C07C255/29
Filed: 1958-05-23
Abstract: The invention comprises carbocyclic b -cyanoketones of formula <FORM:0887413/IV (b)/1> in which in at least one of the pairs of groups R1 and R2, R1 and R3, R2 and R4, and R3 and R4, the R groups are joined to complete a 5- or 6-membered carbocyclic ring and when R1, R2 and R3 do not form part of such a ring they are alkyl, aryl, aralkyl or alkaryl groups, and when R4 does not form part of a ring it is hydrogen, methyl or ethyl.  The compounds preferably contain not more than 24 carbon atoms.  They are prepared by the hydrocyanation of a ,b -unsaturated ketones of formula <FORM:0887413/IV (b)/2> or of tautomeric b ,g -unsaturated ketones as in Specification 887,412.  The products are stated to be useful as plasticisers for nitrocellulose and in mosquito and rodent repellants. Specification 730,209 also is referred to.ALSO:Mosquito and rodent repellant compositions comprise a carbocyclic b -cyanoketone of formula <FORM:0887413/VI/1> in which in at least one of the pairs of groups R1 and R2, R1 and R3, R2 and R4, and R3 and R4, the R groups are joined to complete a 5- or 6-membered carbocyclic ring and when R1, R2 and R3 do not form part of such a ring they are alkyl, aryl, aralkyl or alkaryl groups, and when R4 does not form part of a ring it is hydrogen, methyl or ethyl, together with an inert carrier.  Specification 730,209 also is referred to.
Patent GB-1423399-A (GB)
Title: Electronic analogue operational circuit
IPC: G06G7/186
Filed: 1973-04-06
Abstract: 1423399 Electric analogue calculating HITACHI Ltd 6 April 1973 [7 April 1972 13 Dec 1972] 16720/73 Heading G4G An electric analogue operational amplifier circuit, e.g. an integrator, has a feedback circuit which includes a polarized capacitor 6 and a source of biasing voltage which is added to the output of the amplifier in the feedback circuit, e.g. in a second amplifier circuit 25, to maintain the required polarity for the capacitor even though the output voltage changes polarity. In Fig. 2 the biasing voltage is supplied by a regulator circuit based on a Zener diode 21. The resistors Ra, Rb which determine the proportion of the amplifier output fed back can be replaced by a variable resistance, Fig. 4 (not shown). A limiter circuit 40 provides protection against overvoltages. By adding a variable resistor feedback loop a first order lag circuit can be provided, Fig. 5 (not shown). Figs. 6 to 9 (not shown) illustrate modifications in which additional components provide lead/ lag and proportional plus integral circuits.
Patent GB-1471065-A (GB)
Title: Single-lens reflex camera
IPC: G03B7/10
Filed: 1974-04-17
Abstract: 1471065 Cameras FRANKE & HEIDECKE GmbH [trading as ROLLEI-WERKE FRANKE & HEIDECKE] 17 April 1974 [5 May 1973 16 Feb 1974] 16726/74 Heading G2A An SLR camera has a photo-electric element 2 positioned to receive light passing through the diaphragm 19, means 20 for comparing a voltage representing the illumination of the element 2 with a voltage representing exposure time and film speed set in on a resistor 21 and means for generating pulses which alter the diaphragm until the voltages balance. As shown, the voltages are fed to respective inputs of an operational amplifier 20. If the voltage due to the photo-electric element 2 is the larger, the output of amp. 20 is positive, and a feedback capacitor 22 charges and triggers a transistor 26 to turn on a transistor 30 to energize the diaphragm drive 1. A pulse generator 25 periodically turns on a transistor 24 to short capacitor 22 so that transistors 26, 30 and the drive 1 are pulsed. As the diaphragm is altered, the difference between the voltages fed to amp. 20 decreases, and the pulses fed to drive 1 thus become shorter until when the voltages are equal the pulses cease and the diaphragm is correctly set. If the voltages fed to amp. 20 produce a negative output, transistors 27 and 31 feed pulses of the opposite polarity to the drive 1 to operate it in the opposite sense. Preferably an RC circuit 35, 37 integrates the output of amp. 20 and feeds it back to reduce the voltage difference and prevent overshooting of the diaphragm. In Fig. 2, (not shown) pulses of alternate polarities are fed to the drive 1, whether the diaphragm opens or closes being determined by which polarity has the greater width. When the input voltages balance pulses of alternate polarity and equal width are fed to the drive 1.
Patent GB-1387997-A (GB)
Title: Container stands
IPC: B65D90/14
Filed: 1971-05-25
Abstract: 1387997 Container traffic; container lifting stand R M LEE 7 Aug 1972 [25 May 1971] 16769/71 Heading B8Q  A container lifting stand comprises spaced inwardly facing channel guides 2 and a container supporting member 10 guided thereby, along the longitudinal axis of the guides, the upper cross slide 11 of which engages the container or a projection therefrom. A central connecting member 13 of the supporting member has holes 14 which can be engaged by a pin 24 of a displacement means 18 and by a peg 15 to hold the member 10 in raised positions. The slide 11 of each stand at each corner of the container is raised to contact a part of the container and is held there by the pin 15 after which the means 18 is operated by the handle 26 to raise each slide 11 the distance between two holes 14 after which the pin 15 is engaged in the next hole. When the container is raised sufficiently a vehicle can be driven from beneath it. Subsequently, the container can be lowered similarly on to another vehicle. Other displacement means such as screw jacks or piston and cylinder units or cam means may be used. As shown, the stand has a base plate 4 and is mobile being wheeled on a wheel 7 but for heavy containers the stand may be set in concrete.
Patent GB-1480901-A (GB)
Title: Filling machines
IPC: B65B3/32
Filed: 1974-07-04
Abstract: 1480901 Filling machine; metering fluids D S BUICK 4 July 1974 [7 April 1973] 16811/73 Headings B8T and B8N In a revolving-table filling machine comprising a central container 1 surrounded by a circle of cylinders 2 filling semiviscous products into open mouthed containers 27 on a turntable 28, a cam track member 5 engages flat slipper surfaces 16 mounted by means of movable sleeves 12 on each stub shaft 10 of the reciprocating pistons 3 thus controlling the movement of the pistons in the cylinders 2. The whole assembly rotates about the axis 8. Each cylinder 2 is fitted with valve means 4 and the piston stub shafts 10 project radially outwards from the central container 1. Internally screwthreaded sleeves 12 engage the externally screw-threaded stub shafts and a locking screw 13 is engaged in an axial screw-threaded hole in each stub shaft 10 to lock the sleeve 12 in a particular axial position on the stub shaft. The sleeve 12 supports an inner member 14 having the form of an equatorial zone of a sphere and an outer member 15 engaging the spherical surface of the inner member 14 and being formed with the flat slipper surfaces 16 which contact the surfaces 17 of the cam track member 5. The cam track member 5 is formed in two halves, each half having a semi-circular shape and the halves being coupled by means of guide bars slidable in sockets and feathers bridging the two halves, each feather being fixed in a recess in one half and slidable in an aligned recess in the other half so that the two halves can be moved towards or away from one another. One half of the cam track member is pivoted at 6 whilst the other half is adjustably fixed to the fixed column 21 by a wing nut 26 on a screw-threaded pin 24 pivoted at 25 so that the indication of the cam track member 5 can be varied. The stroke at the pistons 3 is controlled both individually by adjusting the axial position of the sleeve member 12 and hence the position of the slipper surfaces 16 on the track surfaces 17 and as a whole by adjusting the inclination of the cam track member 5.
Patent GB-831537-A (GB)
Title: Improvements in or relating to the manufacture of electrical capacitors
Inventor: ROBINSON FREDERICK CHETHAM
IPC: H01G4/20
Filed: 1956-05-31
Abstract: 831,537. Capacitors. HUNT (CAPACITORS) Ltd., A. H. June 20, 1957 [May 31, 1956], No. 16910/56. Drawings to Specification. Class 37. In a capacitor wound from flexible dielectric strip, a thin web of fibre glass is coated and/or impregnated with a solid-setting dielectric and is metallized to provide the electrodes. The dielectric may be polytetrafluorethylene or a silicone resin. Specification 680,472 is referred to.
Patent GB-210020-A (GB)
Title: Improvements connected with incandescent gas burners
IPC: F23D14/62
Filed: 1923-06-29
Abstract: 210,020. Fisk, J. W. June 29, 1923. Incandescent gas burners.-An incandescent gas burner comprises a superheating chamber 5 in which is arranged a diaphragm 6, provided with corrugations 9 and cut away portions 11 on opposite sides.
Patent GB-511318-A (GB)
Title: Improvements in audible alarm devices
IPC: G10K7/00
Filed: 1938-06-07
Abstract: 511,318. Electric alarm devices. GENERAL ELECTRIC CO., Ltd., and MOORE, H. A. June 7, 1938, No. 16936. [Class 13] An audible alarm device is provided with a cap adapted to co-operate with the lamp socket in a streetlight fitting and is constructed so that it can be operated by the supply to which the socket is connected . As shown, a motor horn 1, electrically modified to operate on 200-260 volts, is provided with a metal extension 2 terminating in a screw cap 3 adapted to fit into the lamp socket of a street-light fitting. The alarm may be brought into operation by a relay controlled by a special signal imposed on . the supply network or pilot wires may be provided to connect the fitting to the normal lighting supply circuit. Specification 396,436, [Group XL], is referred to.
Patent GB-767531-A (GB)
Title: Improvements in or relating to polarised radio mirrors
Inventor: WELLS EDWARD MARSHALL
IPC: H01Q25/00
Filed: 1954-06-09
Abstract: 767,531. Radio reflectors. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 18, 1955 [June 9, 1954], No. 16998/54. Class 40(7) The invention is concerned with radio mirrors of the kind comprising a plurality of wires, strips, slats or baffles. Such mirrors can be used in transmit-and-receive aerial systems to reflect waves' of one polarization and pass waves of another. It has been found that, where mirrors having a plurality of parallel wires or the like are used in conjunction with lenses, trouble arises due to the phase aberration and other errors which occur. These are in part due to energy passing through the lens at a considerable distance from its axis having its polarization components at an angle to the corresponding components of the axially directed energy. Consequently they are differently affected by the parallel wire mirror. According to the invention a wire or like mirror 5 intended for use in conjunction with a lens 6 is constructed with the wires diverging from a point Z external to the effective part of the mirror and defined by the intersection of the plane containing the mirror, the plane (EFGH) through the focus of the lens and parallel to the lens, and the plane (BCKJ) passing through the focus and a representative linear polarization vector (at the lens) of the polarization which the mirror is intended to-reflect. The aerial system shown is for a radar system with a transmitting horn 1 radiating a vertically polarized wave. The energy is reflected by mirror 5 through lens 6 and circular polarizer 7 and radiated as a circularly polarized wave. Reflected signals returned are converted into a horizontally polarized wave which passes through the mirror 5 to receiving horn 3. By the use of a mirror 5 constructed in accordance with the invention phase aberration and the like are largely avoided. The invention is not limited to the reflection of waves of vertical polarization and Fig. 3 (not shown) depicts schematically a mirror for reflecting waves of a given arbitrary direction of polarization.
Patent GB-321662-A (GB)
Title: A new or improved building block or unit
IPC: E04C2/32
Filed: 1928-06-12
Abstract: 321,662. Bourdelles, L. June 12, 1928. Metal building-blocks.-A prismatic building- block consists of a series of hollow triangular prisms b packed side by side in line and having longitudinal strips 2 applied and fastened to both the open ends of the block in order to close or substantially close the same and to form a unitary block. The block may be formed from a metal plate 1 which is folded in zig-zag fashion to constitute a series of prisms b, or it may be of reinforced concrete. The strips 2 are in the form of metal sheets when the block is of metal, and of reinforced concrete when the block is of such material. Apertures may be provided at - intervals in the longitudinal strips. It is stated to be known to connect a series of hollow triangular prisms in line to form a unitary building-block by means of welding or fasteners or by cross-strips applied to the front faces of the prisms.
Patent GB-278102-A (GB)
Title: The manufacture of new vat dyes and intermediates for vat dyes
IPC: C09B3/44
Filed: 1926-07-07
Abstract: 278,102. British Dyestuffs Corporation, Ltd., Shepherdson, A., and Hailwood, A. J. July 7, 1926. Pyranthrone derivatives. - Pyrantbrone is treated with oxidizing agents in sulphuric acid solution or suspension. The, product dyes cotton from the vat in brown shades which are not fast, becoming greener in presence of alkali and redder in presence, of acid; after alkylation, however, if desired after separation from unchanged pyranthrone or treatment with reducing agents, the product dyes cotton in fast red to brown shades. According to examples, pyranthrone is oxidized with manganese dioxide in sulphuric acid at 60‹ C. and the product boiled with sodium bisulphite and then methylated with dimethylsulphate. in nitrobenzene; the product dyes cotton in brown shades : if the reduced body is extracted with nitrobenzene to remove pyranthrone prior to methylation, the final product dyes cotton in red shades. Specification 193,431 is referred to.