baber/WOPTO huggingface dataset:
Patent GB-1278307-A (GB)
Title: Production of polyamide moldings
IPC: B29C31/04
Filed: 1969-11-03
Abstract: 1278307 Injection moulding polyamides BADISCHE ANILIN & SODA FABRIK AG 3 Nov 1969 [4 Nov 1968] 53744/69 Heading B5A A process for the production of a moulding by activated anionic polymerization of lactams having at least six ring carbon atoms comprises mixing at least two lactam melts containing catalyst and activator separately and heated to polymerization temperature in an antichamber whose temperature is from 80‹ to 200‹ C., allowing the resultant mixture to polymerize therein until it is at least dimensionally stable enough not to flow under its own weight, forcing the polymer into a mould through a nozzle-like means at a pressure from 100 to 5000 atmospheres gauge and removing the finished moulding from the mould. The shrinkage is small and pressure need not be maintained while the polymer is in the mould as polymerization is substantially completed before the polymer enters the mould. The temperature of the antechamber is preferably between 125‹ and 180‹ C. The mixture remains in the antechamber for 5 to 90 seconds until it has attained a viscosity between 10<SP>2</SP> and 10<SP>6</SP> centipoises and a modulus of elasticity of at least 0À1 km/mm.<SP>2</SP> and is forced through the nozzle-like means, which is at a temperature at least 25‹ C. above that of the antechamber, in not more than 10 seconds at a rate between 0À1 and 5 kg./sec. The moulding is preferably removed from the mould at a temperature of not less than 125‹ C. In the embodiment shown in Fig. 2, caprolactam containing catalyst and caprolactam containing activator are stored at 75‹ C. in separate reservoirs 1a, 1b respectively. The required quantity of each mixture is passed through heaters 2a, 2b and mixed in antechamber 4 which is closed at its base by piston 5. A cover is placed after the assembly of antechamber 4 and moulds 6 and the assembly is placed between the platens of a press. After a predetermined period of time, the press platens are forced together, forcing piston 5 into antechamber 4 and the polymer through nozzles 8 into mould cavities 6. In an alternative embodiment (Fig. 3) the caprolactam melts are mixed in an antechamber 4 which comprises the barrel of an injection piston, the nozzle 8 being closed by a thin polyamide film arranged between sections 8 and 8a of the nozzle. After injection, excess material solidifies about gripping means 5a on the piston and can be easily removed.
Patent GB-1451860-A (GB)
Title: Friable compositions
IPC: C08L91/00
Filed: 1974-12-12
Abstract: 1451860 Extrusion aids for thermoplastics polymers CONTINENTAL OIL CO 12 Dec 1974 [17 Dec 1973 (2) 1 May 1974 (2)] 53814/74 Heading C3P [Also in Division C5] Compositions which are friable at ambient temperatures are prepared by mixing a paraffinic hydrocarbon wax and (a) a calcium salt of a fatty acid or (b) calcium hydroxide and a fatty acid, while heating to a temperature of at least 150 C. and thereafter cooling to recover a solid, glass-like, friable composition, the paraffinic hydrocarbon wax having a drop melting point (ASTM D 127-63) of at least 110 F., an oil content (ASTM D 721-65 T) of not greater than 50% by weight and a needle penetration value at 77 F. (ASTM D 1321-65) in the range of 1 mm. to 20 mm., and the fatty acid being a C 16 -C 24  aliphatic hydrocarbon monocarboxylic acid or a mixture of two or more such acids. In the examples the compositions are prepared by mixing molten paraffinic hydrocarbon wax, calcium stearate, calcium palmitate, calcium tallate, stearic acid, calcium hydroxide, tall oil fatty acid, palmitic acid, oleic acid and hydrogenated tallow fatty acid. The compositions may be used as extrusion aids for thermoplastic polymers, e.g. polyvinyl chloride.
Patent GB-1066770-A (GB)
Title: Improvements in or relating to anologue-digital converters
IPC: H03M1/00
Filed: 1965-12-20
Abstract: 1,066,770. Selective signalling. SIEMENS A.G. Dec. 20, 1965 [Dec. 21, 1964], No. 53856/65. Heading G4H. In a non-linear voltage digitizer an exponentially decaying reference voltage, produced by a capacitor or inductor, is compared both with an unknown input voltage and with a known reference voltage and clock pulses are counted from the first instant at which the exponentially decaying reference voltage equals either the input voltage or the reference until the instant at which it equals the other. A sign indicator in the counter is set in accordance with the first equality that occurs. The unknown input voltage may be attenuated selectively, either automatically or manually, in order to effect range changing.
Patent GB-1485796-A (GB)
Title: Electronic brightness control for room lighting
IPC: H05B39/08
Filed: 1974-12-13
Abstract: 1485796 Touch responsive switching systems ITT INDUSTRIES Inc 13 Dec 1974 [14 Dec 1973 54040/74 Heading G1N [Also in Division H2]  An electronic lamp brightness control arrangement comprises a semi-conductor switching device in a main current path which is periodically switched on and off via a phase control circuit whose angle of current flow can be varied by means of a control element which has a plurality of finger touch contact panels at least one or each of which serves as an on-off switch, and are associated with control or glow lamps or pilot lights. In the dimmer circuit of Fig. 3 an A.C. voltage stabilizer consists of two opposed Zener diodes Z1, Z2, and a bidirectional constant current source controlled by the touch contact panels 1 charges the phase control capacitor Cc and controls the setting of the phase angle. The bi-directional current source includes transistors T1, T2 and one of the potentiometers R1, R2, R3 as well as a rectified GB producing a necessary supply voltage on Cb for a digital circuit E. It is via the base electrodes of the transistors Tr that the respective potentiometer R is switched on or off by a panel 1 to vary the charging or discharging current of the phase control capacitor Cc.
Patent GB-1278309-A (GB)
Title: Method and apparatus for making an imprint on a recording medium
IPC: B41J2/32
Filed: 1969-11-04
Abstract: 1278309 Selective printing HYPERTECH CORP 4 Nov 1969 [14 Nov 1968] 54052/69 Heading B6F A pulsed laser light or a light beam generated by a xenon light source is impinged on a conventional typewriter ribbonl 6 with sufficient energy to transfer pigment towards and on to the recording medium 20.
Patent GB-1397813-A (GB)
Title: Honeycomb materials
IPC: B31D3/02
Filed: 1972-08-23
Abstract: 1397813 Lapping material DUFAYLITE DEVELOPMENTS Ltd 21 Aug 1973 [23 Aug 1972 21 Aug 1973] 54100/73 and 54122/73 Divided out of 1397812 Heading B8C Structural honeycomb material 5 (as shown at the top of Fig. 3) is fed forwardly in a continuous unexpanded state into a storage channel where it can expand so that the quantity of material in the channel is variable. In the embodiment of Fig. 1 the material is push fed between parallel bars 6 and a platen 7 to between two sets of parallel bars 9 spring biased together. At the end of this feedway the material enters the storage channel formed by vertical wires 12, 13 carried by winding drums 14, 15. The weight of the material in the channel compresses the material at the bottom of the channel. As the material emerges from the channel it is lapped into a stillage 4 reciprocated by a ram 3, shutters 7, 8 permitting the material to pass out alternatively from either side of the channel. The wires 12, 13 are wound on to the drums 14, 15 as the height of the material in the stillage increases. In Fig. 3 each side of the channel comprises steel tapes 31, 32 carried by a winding drum, a fence 34-39 of variable height and mounted beneath a transverse bar 33 and a similar fence above the bar, and shutters 18<SP>1</SP> having rollers 24 and mounted between transverse member 20, 21 engaging vertical guides 26, 27. The shutter on the two sides are clamped together by rollers 29 and ram 3 is stopped to interrupt the lapping when a photoresponsive device 30 on the bar 33 detects the material is expanded. Alternatively the material may be fed from the channel to a laminating station, the honeycomb producing apparatus may be stopped if the channel contains too much material, or the channel may permit the material to hang freely in loops.
Patent GB-1237060-A (GB)
Title: Improvements in or relating to the production of 2,4,6-heptanetrione and 2,6-dimethyl-4-pyranone
IPC: C07C51/00
Filed: 1968-05-15
Abstract: 1,237,060. Producing 2,4,6-heptanetrione and 2,6-dimethyl-4-pyranone. UNION CARBIDE CORP. 15 May, 1968 [22 May, 1967], No. 54379/70. Divided out of 1,224,642. Heading C2C. 2,4,6 - Heptanetrione and 2,6 - dimethyl - 4- pyranone are produced by reacting diketone and water in the presence of an imidazole of formula where R 1  is an alkyl, alkoxyalkyl, hydroxyalkyl, haloalkyl free of α-halogen, acyloxyalkyl, alkynyl, alkenyl or aralkyl radical containing 1 to 20 carbon atoms, R 2 , R 3  and R 4  are H or a radical R 1 . The catalyst is preferably used in an amount of 0À03 to 5À0% by weight of diketene and a solvent is preferably employed. The preferred temperature range is 0‹ to 50‹ C. The pyranone is formed as a minor product.
Patent GB-1152934-A (GB)
Title: Process for the Production of a Vaccine Against Foot and Mouth Disease
IPC: A61K39/135
Filed: 1967-11-29
Abstract: 1,152,934. Foot and mouth disease vaccine. INSTITUT FRANCAIS DE LA FIBVRE APHTEUSE. 29 Nov., 1967 [22 June, 1967], No. 54403/67. Heading A5B. A vaccine against foot and mouth disease is produced by cultivating the virus of foot and mouth disease on glossal epithelia of bovines in a first culture medium, separating the first culture medium, adding fresh culture medium to the bovine glossal epithelia, continning the cultivation in the second culture medium, separating the second culture medium, repeating, if desired, the addition of fresh culture medium and cultivation of the virus therein one or more times, and finally inactivating the cultivated virus in the separated culture medium to produce the Vaccine. The first cultivation may take place for 15 to 20 hours and the second for 3 to 12 hours; The vaccine may comprise the separated mixed culture media from the cultivations or a liquid obtained by grinding the separated bovine glossal epithelia and extracting the ground bovine glossal epithelia with a buffer liquid added to the separated culture medium of one or more cultivations. Inactivation may be effected by adsorption of the virus on aluminium hydroxide or by the combined action of formaldehyde and heat.
Patent GB-1441597-A (GB)
Title: Method of making matrices for the manufacture of lattice or grid metal layer structures by electrolytic deposition
IPC: C25D1/08
Filed: 1973-11-23
Abstract: 1441597 Electro-forming matrices FRITZ BUSER A G MASCHINENFABRIK 23 Nov 1973 [28 Nov 1972] 54540/73 Heading C7B A matrix for manufacturing lattice or grid or mesh metal network having openings of predetermined shape and size by electro-deposition of metal e.g. Ni and its removal, e.g. a filter or patterned sieve for screen printing, is made by making depressions e.g. embossing grooves 6, 18 in the surface of a base body 5 and filling with conductive material 10, 15, 19 to form conductive portions of shape, size and surface distribution corresponding to the solid portions of the network, the surface extending between the conductive material being covered with a layer of insulating material 13, 17 e.g. lacquer or resin to form non-conductive portions corresponding to the interstitial openings between the solid portions. The base body may be a metal cylinder having a surface of Cu brass or soft steel made smooth by grinding or electropolishing. A metal layer 8 e.g. of hard chrome may be electro-deposited on to the entire surface of the body after the depressions 6 have been formed therein Fig. 5, metal removed from those portions 9 without depressions e.g. by grinding, then base body material removed by etching, the entire surface may be covered with the insulating material 13 and sufficient covering removed e.g. by grinding to expose chrome strips 10 and provide a smooth surface, Fig. 9, ready for Ni electro-deposition of the network and its removal. Alternatively the base body with depressions 6 may be selectively covered on portions 9 with an insulating material e.g. lacquer 14 by gravure printing, then metal 15 e.g. Ni or Cr electro-deposited to fill the depressions Fig. 11. In a third embodiment Fig. 16, metal 19 e.g. Ni or Cr is electro-deposited to fill V-grooves 18 impressed in a polished body 5 previously covered with insulating material 17, which is removed and replaced by an insulating layer to form a smooth surface.
Patent GB-1176332-A (GB)
Title: Method and apparatus for delivering measured quantities of a liquid in a prescribed direction
IPC: F04B13/00
Filed: 1966-12-08
Abstract: 1,176,332. Reciprocating pumps. MAGYAR TUDOMANYOS AKADEMIA AUTOMATIZALASI KUTATO INTEZET. Dec. 8, 1966 [Dec. 8, 1965], No.55115/66. Heading F1A. At least three pistons 1, 6 &c., are reciprocated in sequence in cylinders 2, 7 &c., connected in series by pipes 3, 4, 5 &c., the pistons in their lower position closing the connections and thereby acting as non-return valves to give unidirectional but reversible flow through the series, the direction being dependent on the sequence of operation.
Patent GB-1291089-A (GB)
Title: Pressure proportioning valve for hydraulic brake systems
IPC: B60T8/26
Filed: 1969-11-12
Abstract: 1291089 Dual hydraulic braking systems; valves KELSEY-HAYES CO 12 Nov 1969 [10 Dec 1968] 55461/69 Headings F2F and F2V In a dual hydraulic braking system having front and rear wheel cylinders 28, 34 separately pressurized by a master cylinder 20, a pressure proportioning valve 10 in the line between the master cylinder 20 and the rear wheel cylinders 34 regulating the pressure to the rear cylinders minimizes the reduction in fluid pressure to the latter when the front brakes fail. Hydraulic fluid passes to the front brake cylinders 28 by way of conduit 26 which has a branch 24 leading to a port 16 of the valve 10, pressure acting through this port on the cylindrical extension 78 of a piston 54 having a flange 62 acted upon by fluid pressure from the master cylinder by way of conduit 18 and port 14, a stepped portion 76 of the piston controlling with a valve seat 68 the flow of fluid to the rear brakes via port 30. At a predetermined pressure in conduit 24 piston 54 moves leftwardly to engage seat 68 thereby reducing the pressure to the rear cylinders. If the pressure to the front brake cylinders fails the seat 68 and portion 76 disengage to pass hydraulic fluid to the rear wheel cylinders. In a further embodiment, Fig. 2 (not shown), in which the delivery of pressure to the front brakes is delayed the valve has a further port (100) connected to the front brakes which communicate with the master cylinder through this port and a port (94) controlled by valve piston (112) having an elastomeric valve head, the piston moving leftwardly under fluid pressure to connect the master cylinder and front brakes only when the pressure exceeds a predetermined value.
Patent GB-1144339-A (GB)
Title: Feeding apparatus for use with a drawbench
Inventor: GARRINGTON ARTHUR MARTIN
IPC: B21C1/32
Filed: 1966-12-13
Abstract: 1,144,339. Drawing. SAMUEL PLATT Ltd. 6 Dec., 1967 [13 Dec., 1966], No. 55691/66. Heading B3P. Apparatus for feeding rods or tubes to drawing dies comprises a series of work-holders 10- 15 divided into two sets 10, 12, 14 and 11, 13, 15 which can be raised and lowered by vertically movable arms between an upper position in which they are loaded and a lower position in which they move the workpiece end through the die. The holders have removable plugs 16 to receive tubes which can be removed so that rods can be loaded into the holders. The holders are pivotally mounted on a carriage which is reciprocated pneumatically. In operation with workpieces loaded on to the raised set of holders and workpieces removed from the lowered set the carriage is retracted. The upper set is lowered by pivoting pneumatically operated arms 19 (20-22), Fig. 4 (not shown). The holder ends are slidable in a carriage 25 which is moved pneumatically transversely to position the unloaded holders over the arms and to align the loaded holders with the dies. The unloaded holders are raised by the arms and the carriage advanced.
Patent GB-1145129-A (GB)
Title: An improved rail hole swaging machine
Inventor: PAYNE WILLIAM WOOLLEY
IPC: E01B31/06
Filed: 1966-12-13
Abstract: 1,145,129. Forging; reworking worn rails. W. E. & F. DOBSON Ltd. 30 Nov., 1967 [13 Dec., 1966], No. 55824/66. Headings B3H and B3Y. A portable machine for reworking holes 15 in laid railway rails 14 comprises a rigid structure formed by an hydraulic jack 5, control valve 4 and hand-operated pump 1, means 11 for releasably fastening the structure to the rail, and a swaging tool 8 secured to the ram 5b of the hydraulic jack. The jack is double-acting and controlled by a 3-way selector valve 4 and tank release valve 3. Pump 1 is actuated by a handle 2. U-shaped frames 11 are pivoted to the pump frame 9 by releasable bolts 10 and have abutments 11f, 11g for the rail 14. A spring-loaded plunger 12 engages within the end of the hole 15 opposite the swaging tool. In another embodiment, Figs. 2, 3 (not shown), this plunger is omitted. In operation the tool 8 is forced through the hole 15 to increase the hardness of the surrounding metal and reduce the tendency to crack. Means may be provided for adjusting the machine vertically to suit different heights of holes and the machine may be mounted on a skid or wheels for movement along the rail.
Patent GB-1318924-A (GB)
Title: Headlamp adjusting device
IPC: B60Q1/068
Filed: 1970-11-26
Abstract: 1318924 Adjustable headlamps ROBERT BOSCH GmbH 26 Nov 1970 [26 Nov 1969] 56350/70 Heading F4R Apparatus for adjusting a headlamp for a motor vehicle comprises a switch device and a headlamp moving device connected via a cable and conduit arrangement. The switch device, Fig. 1, comprises a wheel 3 with smooth gear teeth on which side pegs 6 mounted on lever arms 4, 5 forced into contact with the wheel by spring 9 and so arranged that when the wheel 3 is rotated by operation of the switch the lever arms 4, 5 oscillate and transmit these oscillations to the cable in the conduit. A ratchet wheel 10 ensures rotation of wheel 3 in one direction only. Attached to the headlamp reflector 27 via a rubber link 25 is a lever 24 which is moved to and fro by a peg on a ratchet wheel 21, the ratchet wheel being turned by a dog at the end of a slide 15 operated by the cable in response to the movements of the switch. Thus each step of the switch causes a step of the ratchet wheel 21 and a step adjustment of the headlamp. As ratchet wheel 21 turns the headlamp passes through a series of positions and after one revolution of the wheel is in its original starting position again.
Patent GB-1219170-A (GB)
Title: Replaceable ripper tip assembly
IPC: A01B15/02
Filed: 1968-11-28
Abstract: 1,219,170. Ripper teeth. CATERPILLAR TRACTOR CO. 28 Nov., 1968 [19 Jan., 1968], No. 56538/68. Headings E1F and E1G. A ripper tooth assembly comprises a shank 12 having a forwardly and downwardly extending end 13, a socketed ripper tooth 14 for mounting over the shank end, a locking member 19 encircling the shank and secured thereto by a pin 21 and interlocking with the tooth 14 through the interengagement of a projection 33 on the member with a recess 34 in the tooth, and a shank guard 27. Preferably the interengaging surfaces of the projection 33 and recess 34 are of saw tooth configuration and the locking member encircles the leading end of the guard.
Patent GB-1111209-A (GB)
Title: Semiconductive transducers and method of fabricating the same
IPC: H01L21/306
Filed: 1966-12-16
Abstract: 1,111,209. Microphones. TOKYO SHIBAURA ELECTRIC CO. Ltd. 16 Dec., 1966 [21 Dec., 1965; 9 April, 1966; 31 May, 1966], No. 56544/66. Heading H4J. [Also in Divisions G1 and H1] In a pressure transducer comprising a junction transistor the emitter region of which extends over or is formed within a mesa the stress applying member is in contact with the mesa over its entire area. A typical device, Fig. 5, is made by first forming a circular or square mesa on a P-type silicon wafer by etching through an oxide mask prepared by conventional surface oxidizing, photo-resist and etching techniques. After removal of the mask phosphorus and boron are successively diffused into limited areas defined by oxide masking to form base zone 7 and emitter 4 respectively. Finally, emitter and base electrodes 15, 13 are applied in apertures in a passivating oxide layer and collector 14 attached to the back face of the wafer. Stress is applied, e.g. by a microphone diaphragm, to the 10Á diameter mesa by a 100Á diameter column 11 of tungsten, sapphire or iron which, if of conducting material, may also constitute the emitter electrode. In an alternative method of manufacture the base zone is formed before the mesa. To avoid the difficulty in making contact to the base electrode within the narrow gap between it and member 11 a double mesa structure may alternatively be used (Fig. 6, not shown). In this case the stress applying member also constitutes the electrode to the emitter zone which extends down on to the central part of the lower mesa. The base electrode is disposed on the part of the base zone extending over the main wafer surface and the wire connected to it is sealed in resin filling the gap between the wafer and the member.
Patent GB-1379802-A (GB)
Title: Variable magnification duplicator
IPC: G03G15/041
Filed: 1972-12-07
Abstract: 1379802 Slit-scanning duplicator KONISHIROKU PHOTO INDUSTRY CO Ltd 7 Dec 1972 [7 Dec 1971] 56564/72 Heading G2A A moving slit-scanning assembly for a duplicator comprises a first plane mirror 3 for receiving light from an original I and pivotable between two mutually perpendicular positions, a second plane mirror 5 of fixed orientation for directing light is photo-sensitive copy material 2, a reflective device 6 movable towards and away from mirrors 3 and 5 (for the purpose of magnification and reduction), and a pair of mutually perpendicular plane mirrors 8/9 of fixed orientation. The  assembly has two arrangements, one for same size duplication and the other for magnified or reduced duplication. In the first (as shown), light from original 1 is reflected by mirror 3 in its first position to the reflective device (in its same size duplication position) and from thence via mirror 5 to copy material 2. In the second Fig. 2 (not shown) light from an original is reflected by mirror 3 in its second position to mirrors 8/9 and thence via reflective device 6 (in a magnification or reduction position) and mirror 5 to copy material 2. A solenoid may be provided for pivoting mirror 3 and a motor may be provided for adjustment of the position of reflective device 6 Fig. 3 (not shown). The base-plate of the assembly together with reflective device 6 and mirror 5 are moved a distance equal to the length of the copy to be produced, whereas to maintain the length of the light path constant two alternative arrangements may be employed. In the first, mirror 3 is moved a distance equal to the length of the original and mirrors 8/9 are moved a distance equal to the average of the lengths of the original and copy (Fig. 2); the assembly base-plate may carry a motor to effect the required additional movements (Fig. 3). In the second, no additional motor is provided for movement of mirrors 3 and 8/9; instead, original 1 is moved a distance backwards equal to the difference between the lengths of the original and copy Fig. 4 (not shown).
Patent GB-1448998-A (GB)
Title: Looms
IPC: B65H59/38
Filed: 1973-12-11
Abstract: 1448998 Let-off motions JURGENS MASCHINENBAU GmbH & CO KG 11 Dec 1973 [12 Dec 1972] 57336/73 Headings D1E and D1M A let-off motion comprises a dandy roller 16, between beams 13, 14, the dandy roller 16 being loaded by hydraulic pistons 18 to maintain a constant tension on the warp 7 and the position of the dandy roller controlling the supply of fluid to a hydraulic motor 22 operating the let-off.