baber/WOPTO huggingface dataset:
Patent GB-1186436-A (GB)
Title: Process for the manufacture of Poly-beta-Amides
IPC: C08G69/22
Filed: 1967-02-22
Abstract: 1,186,436. Polymerization of #-lactams. FARBWERKE HOECHST A.G. 22 Feb., 1967 [2 March, 1966], No. 8373/67. Heading C3R. Azetidinone - 2; 4 - methylazetidinone - 2; 4 - ethylazetidinone - 2; 4 - vinyl - azetidinone-2; or cis- or trans-3,4-dimethylazetidinone-2 or mixtures thereof are anionically polymerized in a two-phase system by first dissolving the #- lactam in a halogenated aromatic compound (e.g. chloro-, bromo-, o-dichloro-benzene or 2-, 3-, or 4-chlorotoluene) the ratio of solvent to #-lactam lies between 10:1 and 1:1. This soln. is then diluted with a " heavy gasoline " in such a proportion that the solution is near the point at which it separates into its components; polymerization is then carried out in the range - 20‹ to + 50‹ C. in the presence of a catalyst (e.g. potassium pyrrolidone) and preferably a co-catalyst (e.g. oxalyl-pyrrolidone). " Heavy gasoline " is defined as a non-aromatic gasoline fraction having a boiling point in the range 100-240‹ C. Reference has been directed by the Comptroller to Specification 1,092,195.
Patent GB-381847-A (GB)
Title: Improvements in or relating to thermionic amplifier and rectifier systems
IPC: H03G3/26
Filed: 1932-03-21
Abstract: 381,847. Valve. amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House; Strand, London. -(Assignees of Farnham, P. O. ; Boonton, New Jersey, U.S.A.) March 21, 1932, No. 8402. Convention date, March 21, 1931. [Class 40 (v).] Automatic gain control is ensured by means of rectified voltages derived from a " double diode" rectifier, which may be a standard triode valve 10, Fig. 1, in which the cathode 12 and grid 13 act as one pair of rectifying- electrodes (for the modulation frequencies) whilst the cathode 12 and anode 14 act as a second pair of rectifying-electrodes (for the carrier wave). To simplify the construction of the output circuit the normal connections are reversed, the high-potential end of the input circuit 6, 7 being connected to the common cathode 12. The input circuit is completed for radio frequencies through a condenser 15 to the grid, and for audio-frequencies through a condenser 16 to the plate. Audio-frequency voltages are built up across a resistance 18, in the grid-cathode circuit, whilst a resistance 20 carries the rectified carrier-wave or D.C. component from the plate. A resistance 17 in the anode-cathode circuit applies bias voltages to the plate 14 and grid 13 of the " double diode," whilst the D.C. voltage across the resistance 20 is fed back through a lead 24 and filter-circuit 25 to the grid of the previous valve 4 for automatic gain regulation. The audio-frequency output is passed on to the next amplifier stage through a condenser 22 and resistance 23. The arrangement ensures constant sensitivity, even for relatively feeble signals, by preventing the development of any rectified carrier-voltage until the signal input has reached a definite value. As the signal input increases, gain control becomes automatically effective. The curve C, Fig. 4, illustrates the action of a known gaincontrol system, whilst curve D shows the more uniform curve secured by the present arrangement. Further, by adjusting the bias E1, Fig. 1, to suppress all audio output below a certain level (indicated by the shaded area in Fig. 4) " valve " and circuit " noise " due to the high-amplification factor of the system is prevented from masking weak signals, the response then being shown by the curve F. Possible ripple voltage on the grid of the first L.F. stage is reduced by connecting the cathode, of that amplifier to a point on the resistance 17.
Patent GB-1092421-A (GB)
Title: Improvements relating to anticoagulant materials
Inventor: HELLMANN KURT
IPC: C07K14/81
Filed: 1964-02-28
Abstract: Anti-coagulant material is prepared from the blood-sucking insect Rhodnius prolixus stal. by centrifuging a suspension in a saline medium of the homogenised insect, to remove tissue debris, treating the supernatant with a protein precipitant, extracting the resulting precipitate with a saline medium, and recovering the saline extract containing the required material.  The preferred starting material is the excised gut of the insect; the protein precipitant may be acetone, methyl ethyl ketone, or other organic liquids, or inorganic salts may be used.  The saline extract may be concentrated, if required to dryness, in a vacuum dessicator at room temperature.  A further purification by heating the extract to 80 DEG C. for ten minutes, to precipitate unwanted protein, may be performed before drying.  The product has anti-thrombin activity similar to heparin, and a molecular weight of 100,000 to 200,000.
Patent GB-861445-A (GB)
Title: Improvements in plastic bearings
IPC: F16C33/20
Filed: 1957-03-14
Abstract: 861,445. Bearings. BURKE, P. Jan. 3, 1958 [March 14, 1957], No. 8496/57. Class 12 (1). A bearing bush 1, Fig. 2, is moulded from thermo-plastic material, with or without the addition of powdered metal, and has tapered end portions 2 of internal diameter slightly less than that of the shaft 6 so that they will grip the shaft lightly and retain lubricant. A central lubricant reservoir 3 is provided. In a modification, separate mouldings 2, Fig. 4, which may be of pure plastic, are moulded on to the ends of a cylindrical bush 1 which may be composed of a mixture of powdered metal and plastic. In a further modification, a cylindrical bush 1, Fig. 3, has ends 4 of reduced internal diameter. The bearing bush may have one or more integral radial projections which engage corresponding recesses in the support. Alternatively, projections on the support may engage recesses in the bush. The bearing may take the form of a thrust washer of disc shape having one or more resilient annular lips which enclose the bearing surface.
Patent GB-1077055-A (GB)
Title: Improvements in or relating to combine harvesters
IPC: A01D41/14
Filed: 1965-02-26
Abstract: In a combine-harvester with a front-mounted cutting table, the table is in two parts each separately pivoted to the central elevator-housing, on the corresponding side, about a horizontal hinge-axis lying above and behind the cutting-table part.  The two parts of the transverse auger move with the cutting-table parts and are coupled to one another by dogs.  The cutting-table parts swing into vertical positions for transport in which positions they lie within the front-wheel track of the harvester.  The reel, which extends the full width of the cutting-table during normal operation, is composed of telescopic bars enabling it to be collapsed into a transport position in which it is raised above the folded cutting-table.  Elongated crop-dividers on the ends of the cutting-table can be folded, for transport, to lie parallel to p  the cutter-bars.  The cutter-bars are driven from the auger-parts and the latter are driven from one end by a connection to the central elevator.
Patent GB-127098-A (GB)
Title: Improvements in and relating to Keyless Locks.
Inventor: STROUD ARCHIE JOHN
IPC: E05B37/12
Filed: 1918-05-22
Abstract: 127,098. Stroud, A. J., and Sartwell, C. H. May 22, 1918. Locks, permutation; latches, sliding. - Each locking-disk 29 is provided with a spring-pressed ball 32 adapted to co-operate with a series of recesses 33 in the casing plate, to enable the disk to be set by the sound of the clicks, one of the recesses 33 having a straight wall to provide a starting point. A plurality of sockets 30 are provided in the disk for the ball, so that the combination may be changed. The outer knobs 41 for the disks normally revolve loosely on the spindles 28 and, for setting the disks, have first to be pressed inwards against the action of springs 43 to bring screws 42 in the knob shanks into engagement with square parts 38 of the spindles. The bolt is urged forward by springs and is retracted by a follower on the central knob spindle.
Patent GB-834960-A (GB)
Title: Excess torque limiting device
IPC: B64C13/30
Filed: 1958-03-17
Abstract: 834,960. Resilient couplings. BENDIX AVIATION CORPORATION. March 17, 1958 [April 5, 1957], No. 8529/58. Class 80 (2). In a resilient coupling wherein a pair of rotatable elements have inter-contacting surfaces urged together by a spring, and co-operating surfaces defining an angular clearance for the reception of fingers on the driving and driven members, excess torque in either direction will tend to separate the intercontacting surfaces against the spring. A housing 4 having a cover 5 is mounted on bearings 2, 3 on an arbor 1 and carries an anchor pin 10 holding one end of a flat spiral spring 6, the other end of which is secured in a slot in the arbor 1. The housing 4 has two lugs 16 secured to its end wall, which lugs are abutted, under predetermined tension of the spring 6, by stop surfaces 19 formed on a driving ring 17 splined to the arbor 1. The driving ring 17 also has two lugs 20 which in conjunction with the lugs 16 provide diametrically opposed spaces 21 into which project fingers 34 and 37 connected to the driving tube 31 and the driven pulley 36 respectively. The driving tube 31 may be connected to a disconnecting mechanism 32 for an automatic pilot servo such as described in Specification 645,481, and the driven pulley 36 may be an aircraft control cable pulley. When torque is applied through the tube 31 up to the preload valve for which the spring is set solid drive takes place. Excess torque either from the drive unit or from the cable pulley produces relative rotation of the fingers 34, 37 to separate the stops 16, 19 against the spring loading.
Patent GB-213922-A (GB)
Title: Improvements in paper bags for use as tea-infusers
IPC: B65D85/808
Filed: 1924-04-04
Abstract: 213,922. Anderson, H. C. April 4, 1923, [Convention date]. Paper bags.-A tea infuser is made in the form of a paper bag folded from a single sheet of paper, the side and end walls of the bag being perforated. The end walls may be outwardly inclined as at 9, and converge inwardly and upwardly as at 10, Fig. 3, or 9<1>, Fig. 8, the mouth of the bag being secured by means such as a staple 12. Side wings 6, which may have folds 7, may be folded against the sides 5 of the bag and secured by the staple 12, which may also secure a string 13 to the bag.
Patent GB-492389-A (GB)
Title: An improvement in or relating to brick-making machines
IPC: B28B5/12
Filed: 1937-03-24
Abstract: 492,389. Brick-moulding machines. FAWCETT, Ltd., T. C., FAWCETT, D. L., and BOTTOMLEY, A. E. March 24, 1937, No. 8592. [Class 87 (ii)] The reciprocating plunger b of a brickmaking machine is connected at one end to the centre of a link e the ends whereof are connected to arms f, g, which are pivoted about fixed axes f<1>, g<1>, so that the plunger is guided in a straight line and fixed guides are dispensed with. The link e is also connected to toggle or other mechanism h, h<1> for reciprocating the plunger. The machine includes an intermittently-rotated mould cylinder a, hopper d and feed-box c. A ram portion b<1> may be detachably connected to the plunger. A pair of links e each connected to a separate pair of arms may be employed.
Patent GB-694437-A (GB)
Title: Improvements in and relating to universal couplings
IPC: F16D3/28
Filed: 1950-04-05
Abstract: 694,437. Universal joints. HOLLAND, J. R., April 2, 1951 [April 5, 1950], No, 8592/50. Class 80 (ii). The four arms 11 of the spider S of a Hooke's joint are mounted in resilient bushes 1 in cup-, shaped housings 2 secured to the forked ends of the coupled shafts, a bearing ball 12 being located between the end of each arm and the base of a cup. Preferably each bush 1, of rubber, is bonded to metal sleeves 16 frictionally fitted on an arm 11 or in a cup 2. The balls 12 engage a spherical recess in the cups and an arcuate V-sectioned groove in the ends of the arms 11.
Patent GB-1358963-A (GB)
Title: 3-methylene cephalosporins
IPC: C07D501/14
Filed: 1972-02-24
Abstract: 1358963 3-Methylene cephalosporins ELI LILLY & CO 24 Feb 1972 [25 Feb 1971] 8683/72 Heading C2A The invention comprises compounds of the Formula I wherein R 10  is hydrogen, C 1 -C 4  alkyl, 4-nitrobenzyl, 4-methoxybenzyl, 2,2,2-trichloroethyl, trimethylsilyl, or a pharmaceutically acceptable cation. A process for preparing compounds of Formula II comprises reducing a 3-substituted methyl-#<SP>3</SP>- cephem-compound of the Formula VI in an inert solvent in the presence of hydrogen and a metal hydrogenation catalyst at a temperature between 5 and 65 C. or in the presence of at least a catalytic amount of dimethylformamide or dimethylacetamide at a temperature between 0 C. and 60 C. with a chemical reducing agent selected from the group consisting of (a) aluminium amalgam, (b) zinc in the presence of an acid, (c) zinc amalgam in the presence of an acid, (d) zinc-copper couple in the presence of an acid, (e) chromium II cations in the presence of an acid, wherein the acid is a carboxylic acid having a pKa<SP>1</SP> of at least 4À0 or a dilute mineral acid having a concentration of between 0À5 and 5À0%; wherein in the foregoing formulae R 1  is hydrogen, C 1 -C 4  alkyl, a carboxylic acid protecting group, or a pharmaceutically acceptable cation; R is hydrogen, C 1 -C 8  alkanoyl, C 6 -C 10  cycloalkanoyl, C 2 -C 8  hydroxyalkanoyl, C 2 -C 8  alkanoyl substituted by C 5 -C 9  cycloalkyl, C 3 - C 8  alkanoyl substituted by carboxy and amino or protected amino, benzoyl, substituted benzoyl, or an acyl group represented by the Formula VI wherein P is α-thienyl, #-thienyl, α-furyl, #- furyl, benzothienyl, benzofuryl, phenyl or substituted phenyl, Z is oxygen or sulphur, n is 0 or 1, m is an integer from 0 to 3, a is hydrogen or C 1 -C 3  alkyl, b is hydrogen, C 1 -C 3  alkyl, hydroxy, amino or protected amino, with the limitation that when n is 1, P is phenyl or substituted phenyl and b is hydrogen or C 1 -C 3  alkyl, R 2  is C 2 -C 4  alkanoyl, C 2 -C 4  haloalkanoyl, benzoyl, substituted benzoyl, C 1 -C 4  alkyl, C 1  to C 12  alkoxythionocarbonyl, C 1  to C 12  alkylthionocarbonyl, an amidino group of the Formula VII wherein R 4 , R 5 , R 6  and R 7  are the same or different and represent hydrogen, C 1  to C 6  alkyl, C 3  to C 7  cycloalkyl, aryl, aralkyl, substituted aryl or substituted aralkyl, a thiocarbamoyl group of the Formula VIII wherein R 8  and R 9  when taken separately are the same or different and are hydrogen, C 1  to C 6  alkyl, phenyl or substituted phenyl or R 8  and R 9  when taken together form a 4 or 5 membered alkylene, aza-alkylene, or oxaalkylene bridge, a monocyclic heteroaryl group, a bicyclic heteroaryl group or a group of the formula -SO 3 -M<SP>+</SP> wherein M<SP>+</SP> is an alkali or an alkaline earth metal cation; such that when R 2  is an amidino or substituted amidino group, R 1  is hydrogen or when R 2  is -SO 3 -M<SP>+</SP>, R 1  is M<SP>+</SP>.
Patent GB-966048-A (GB)
Title: A power supply system
IPC: C23F13/04
Filed: 1962-03-06
Abstract: 966, 048. Control of cathodic protection current. ENGELHARD INDUSTRIES Inc. March 6, 1962 [March 7, 1961], No. 8696/62. Heading G3R. In a cathodic protection arrangement the potential of a silver-silver chloride half cell 6 is compared with a reference voltage from a potentiometer 14 at the input to a second-harmonic -magnetic amplifier MA1 controlling a saturable reactor 24 through a magnetic amplifier MA2. The reactor 24 varies the current to an anode 26 from a power supply 12 through a transformer and a rectifier 28 so as to maintain the half-cell potential constant. The potentiometer 14 is energized from a battery 10 which can be replaced by an arrangement incorporating a Zener diode. The power supply 12 can be single or three-phase. A reactor 22 prevents induced current from flowing through the half cell and a diode 21 shunts reverse differential current indicative of overprotection. Specification 873,846 and U.S.A. Specification 2,934,484 are referred to.
Patent GB-744840-A (GB)
Title: Improvements in or relating to hand knitting apparatus
IPC: D04B39/00
Filed: 1953-03-30
Abstract: 744,840. Knitting-apparatus. FIBRA AKT.- GES. March 30, 1953 [April 8, 1952], No. 8733/53. Class 74 (2). The loop transfer pin bar of a hand knitting appliance is constructed to enable the pins to be individually selected, thereby enabling only selected loops on the normally stationary web holding pin bar of the appliance to be removed from their pins and transferred to other pins to facilitate the production of patterned fabric. The bar may be made in two parts 1a, 2a secured together by screws, one part being recessed to receive the pins 9, pins not required for operation being removed. Alternatively, inoperative pins may be enclosed at a lower level within the bar, Fig. 3. In a further arrangement the needles are pivoted within the bar and are swung into or out of their operative positions, the two halves of the bar in this case being hinged together.
Patent GB-453878-A (GB)
Title: Improvements in or relating to flicker-producing devices for use in connection with electric fires of the imitation coal-fire type
IPC: F24C7/00
Filed: 1935-03-21
Abstract: 453,878. Imitation fires. GILBERT, N. W., 513, Warwick Road, Solihull, Warwickshire. March 21, 1935, No. 8776. [Class 126] A flicker device comprises an irregularly perforated disc b arranged between the lamp -in holder d-and the fuel above it, the discs serving as the rotor of an electric motor and being mounted in dual bearings a<2>, a<3> in a frame a which also carries the static parts of the motor. These latter comprise a pair of U-members having tubular portions e<1> held in contact by an assembly bolt e<3> or otherwise and spaced apart ends e<2> forming the polepieces between which the unperforated edge of the rotor runs.
Patent GB-1221732-A (GB)
Title: A method of producing dimensionally stable portland cements containing magnesia
Inventor: SCHMITT-HENCO CARL-HEINRICH
IPC: C04B7/02
Filed: 1969-02-18
Abstract: 1,221,732. Portland cements. DYCKERHOFF ZEMENTWERKE A.G. 18 Feb., 1969 [9 March, 19681, No. 8803/69. Heading C1H. A dimensionally stable Portland cement is made by clinkering raw materials containing 3-5À5 wt. per cent MgO and incorporating SO 3  in chemically bound form into the fired material. An amount of SO 3  at least equal to 0.67 times the MgO content exceeding 2% of the raw materials is incorporated by either adding calcium sulphate to the raw materials to be fired and/or by using a fuel rich in sulphur for the firing.
Patent GB-1534794-A (GB)
Title: Method of manufacturing aqueous gel suspension explosives
IPC: C06B47/14
Filed: 1976-03-05
Abstract: 1534794 Explosive compositions GULF OIL CORP 5 March 1976 [10 March 1975] 08820/76 Heading C1D An explosive composition is made by forming an aqueous solution containing hexamethylene tetramine, nitric acid, ammonium perchlorate, sodium nitrate, and ammonium nitrate, and mixing this solution with particulate ammonium nitrate and a thickening agent, for example guar gum and a cross-linking agent. The composition may be free from suspended solid fuel or may include a sensitizing agent, for example pigment grade aluminium powder, to form a cap-sensitive explosive.
Patent GB-685507-A (GB)
Title: Fluid storage apparatus
IPC: F17B1/013
Filed: 1951-04-16
Abstract: 685,507. Gas holders ; hydraulic accumulators. WIGGINS, J. H. April 16, 1951 [April 28, 1950], No. 8827/51. Classes 54 and 69 (ii). A fluid-storage apparatus, such as a gas holder, comprises a piston D arranged to move vertically in a stationary casing A and maintained horizontal during its movement by a guide member I in telescopic relation with fixed guide members G and H. Guys or stays 1 support the lower end of the member H. The piston is provided with a back-stop member F and a flexible sealing element E. A number of radially projecting plates and prongs (not shown) is fitted to one of the guides G or I to break ice which may form between them.
Patent GB-1519695-A (GB)
Title: Electronic devices
IPC: C03C23/00
Filed: 1976-03-05
Abstract: 1519695 Densifying glass INTERNATIONAL BUSINESS MACHINES CORP 5 March 1976 [11 June 1975] 08844/76 Heading C1M [Also in Division H1] The dielectric breakdown strength of a vitreous insulating layer less than 105000  thick of an electronic device is increased by irradiating the layer, during or after its formation, with ions of H, He, Ne, Ar, Kr or Xe at a dosage and energy so as to increase the density of the layer by at least 1% without the ions penetrating completely the layer, and then annealing the layer. The vitreous layer may be fused SiO 2  on a substrate of, e.g., silicon. The device 30-1 comprising the vitreous layer may be mounted on plate 30-2 in mounts 30-3. Ions from source 12 are passed through accelerator 14, then through a momentum analyzing magnet 16 and beam scanner plates 18-1, 18-2, 20-1, 20-2, and directed on to the vitreous layer (e.g. at a dosage of 10<SP>13</SP>-10<SP>17</SP> ions/cm<SP>2</SP>.). The annealing, which may be concurrent with the irradiation may be at 200-800 C.
Patent GB-989940-A (GB)
Title: Cylinder head for an internal combustion engine
IPC: F02F1/04
Filed: 1964-03-03
Abstract: 989,940. I.C. engine cylinder heads. F. A. E. PORSCHE. March 3, 1964 [March 20, 1963], No. 8882/64. Heading FIB. A cylinder head 4, e.g. of light metal, is secured by bolts 5 which transmit their pressure to sleeves 7 having collars 9, which sleeves are cast in to the cylinder head. The sleeves are, prior to casting, covered with a layer of protective material, e.g. graphite, except the region of the collar 9 so that a metallic bond between the sleeve and head is only obtained at the collar 9, a small gap 12 remaining between the remainder of the sleeve and the head whereby expansion of the head does not influence the sleeves. The nuts 16 of the bolts secure in position on the sleeves a bridge member 15 which supports a bearing 18 for the valve rocker arms 23, 24.
Patent GB-577257-A (GB)
Title: Improvements relating to holders for the shipment of lengths of cloth or the like
IPC: B65H75/02
Filed: 1944-05-10
Abstract: 577,257. Holders for lengths of cloth &c. SKERRETT, H. N. (Hellyar, E. G.). May 10, 1944. No. 8884. [Class 42 (ii)] In a holder for the shipment of lengths of velvet cloth &c. of the kind comprising a pair of end members having a plurality of hooks mounted thereon and spaced apart by a bar &c. the cloth being secured at its edges to the hooks so that its different layers are held in spaced relationship to prevent damage, the hooks are mounted in slots in the end members so that they may be fully protected therein. In the modification of Fig. 4, pins 10 crossing a slot 7 in an end member 5, engage in slots 11 in the hook plate 8. In the modification of Fig. 5, pins 12, crossing the slot 7, engage the hooks 9 of the plate 8 in the fully retracted position, the hooks 9 being prevented from passing the pins 12, by a pin 13 engaging the lower edge 14 of the plate. In a further modification, the hooks of a plate are prevented from passing the pins 12 by a staple which bridges the back of the slot 7. In a still further modification, the pin 13 is replaced by a headed nail driven lengthwise along the slot 7 below the edge 14 of the plate 8, such nail being removable when it is desired to replace the hook plate 8 by another. Specification 575,826 is referred to.
Patent GB-546046-A (GB)
Title: Self locking socket and similar type set screws
IPC: F16B39/30
Filed: 1941-07-16
Abstract: 546,046. Locking screws. ATKINSON, J. July 16, 1941, No. 8967. [Class 89 (i)] Socketed grub &c. screws are locked by providing the screw with one or more slots A and then deforming the part B in an axial direction. The slots may be along the root or may be at another angle or normal to the axis of the screw. According to the Provisional Specification the slots may extend to the top of the screw.