baber/WOPTO huggingface dataset:
Patent GB-1433760-A (GB)
Title: Inrush current limiting circuit for ac-dc converter
IPC: H02M7/155
Filed: 1973-10-29
Abstract: 1433760 Rectifying PIONEER MAGNETICS Inc 29 Oct 1973 [19 Jan 1973] 50212/73 Heading H2F In a rectifying system having a reservoir capacitor C4, a switching circuit including at least one controlled rectifier SCR2, SCR3 is initially triggered at a point in each half cycle so that that the initial charging current of the reservoir capacitor C4 is minimized, the triggering point in each half cycle being gradually advanced as the charge increases. As shown in Fig. 6, the A.C. input is rectified by a bridge of two diodes CR8, CR9 and two thyristors SCR2, SCR3. An auxiliary diode bridge CR2 ... CR11 provides half cycles for a control circuit. To initiate charging the reservoir capacitors C4, C5, C2 is charged during each half cycle until it reaches a voltage depending on the instantaneous value of the half cycles fed to the base of Q2, when that transistor is turned on, turning on Q3, which turns off Q5 or Q6 which thus allows one of the pilot thyristors SCR4 or SCR5 to be turned on, triggering the appropriate one of the main thyristors SCR2, SCR3. The charging time of C2 is varied over a period of about 30 cycles by the charging of Cl through resistor R4 and diode CR6. Q1 is arranged to discharge Cl in the event of disconnection of the A.C. supply so that the current limiting circuit is reset. The circuit is made complicated by the need to prevent spurious operation due to ringing of a radio frequency filter (not shown) connected on the A.C. side. Simpler embodiments are also described.
Patent GB-1529709-A (GB)
Title: Mould
IPC: B29C39/38
Filed: 1975-10-21
Abstract: 1529709 Mould for polymer rods WARNERLAMBERT CO 21 Oct 1975 [21 Nov 1974] 50300/77 Divided out of 1529708 Heading C3R [Also in Division B5] Polymer rods are cast in a mould comprising an oxygen absorbent cylindrical tube, an oxygen-non absorbent spiral coil of a polyester film inert to said polymer lining the interior surface of said tube and a closure for each end of said tube. The polymer produced in the mould may be a graft polymer disclosed in Specification 1,529,708 or a polycarbonate such as poly-(diethylene glycol bis-allyl carbonate). The tube may be made of polytetrafluoroethylene and the polyester film is, e.g. a polyethylene terephthalate film.
Patent GB-1492762-A (GB)
Title: Supporting flexible members in earth moving vehicles
IPC: E02F3/65
Filed: 1974-11-20
Abstract: 1492762 Supports for flexible members in vehicles CATERPILLAR TRACTOR CO 20 Nov 1974 [29 Nov 1973] 50319/74 Headings F2P and F2K [Also in Division E1] Flexible hoses 26, 27, 28 extending between two relatively movable components 18, 20 of an earth working machine, Fig. 1 (not shown) are constrained to move in one plane only by a support comprising arms 30, 32 articulated at 34 and pivotally mounted at 36 to the component 20. The hoses are held in a clamp 44 which is pivotally connected at 40 to arm 30 and comprises a saddle shaped support 42, a two-piece rubber bundling block 42, and clamps 46. The pivotal axes 36, 34, 40 are all parallel.
Patent GB-1371770-A (GB)
Title: Process for the production of polyglycolether compounds and  their use
IPC: C11D1/722
Filed: 1971-10-29
Abstract: 1371770 Washing and scouring textiles SANDOZ Ltd 29 Oct 1971 [30 Oct 1970 23 July 1971 3 Sept 1971] 50360/71 Headings D1B and DIP [Also in Division C3] Textile materials are scoured or washed, particularly prior to, during or after dyeing or printing, with aqueous solutions of polyglycol ethers of the formula: wherein R denotes C 8-24  alkoxy or aralkoxy, x is an integer from 5 to 11, y is an integer from 5 to 18 and z is an integer from 8 to 20. Examples illustrate dyeing with disperse dyes or removal of oil using or in conjunction with the novel polyglycol ethers as applied to polyester/cotton, polyamide/cellulose triacetate, polyester, cotton or wool fabrics and textured polyester fibres or yarns.
Patent GB-993005-A (GB)
Title: New steroid compound
IPC: C07J71/00
Filed: 1963-12-20
Abstract: The invention comprises 3,20-dioxo-9a -fluoro-11b  - hydroxy - 16a ,17a  - isopropylidenedioxy-21 -hydroxysulphonyloxy-pregna-1,4-diene, its salts with alkali metals, ammonia and organic bases, and a process for the production thereof which comprises converting 3,20-dioxo-9a -fluoro - 11b ,21 - dihydroxy - 16a ,17a  - isopropylidenedioxy - pregna - pregna - 1,4 - diene into its acid sulphuric acid ester by known methods for converting a primary alcohol into its sulphuric acid ester.  Pharmaceutical compositions having glucocorticoid and anti-inflammatory activities and containing the above compounds can be administered orally locally or parenterally in aqueous solution.  Specification 889,765 is referred to.
Patent GB-1532548-A (GB)
Title: Knife sharpener
IPC: B24D15/08
Filed: 1976-12-03
Abstract: The intention is to prevent, by means of the knife-sharpening unit, the knife blade from being able to pivot relative to the sharpening device. For this purpose, a carrier (4) is articulated to the main body of the sharpening unit. A sharpening device (5) is articulated, in front of the carrier pivot pin (13), to a front portion of the carrier (4) and rests freely against the upper side (22) of the carrier (4). A reaction member (6) is articulated on the main body such that it extends over at least part of the upper side (22) of the carrier (4). The reaction member (6) has a front (49) and a rear (51) reaction portion which are arranged respectively in front of and behind the carrier pivot pin (13). These reaction portions (49, 51) are located in each case opposite the upper side (22) of the carrier, and the pivot pin (44) of the reaction member (6) runs approximately parallel to the carrier pivot pin (13) and is arranged behind the rear reaction portion (51). Prestressing means (54) prestress the carrier (4) and the reaction member (6) about their pivot points (13 and 44, respectively) in order to counteract separation between the front part of the carrier (4) and the front reaction portion (49). The knife-sharpening unit can be used, in particular, in the form of a knife sheath. <IMAGE>
Patent GB-1153738-A (GB)
Title: Improvements in Bags having Attached Handles, and processes for the manufacture thereof
IPC: B65D33/10
Filed: 1966-11-14
Abstract: 1,153,738. Carrier bags. ATELIERS DE CONSTRUCTIONS MCANIQUES C. & A. HOLWEG S.a.r.l. 14 Nov., 1966 [21 Oct., 1966], No. 50836/66. Heading A4G. A process for manufacturing bags e.g. of paper, with two flat handles by a combination of bag-making and handle-making machines operating continuously, comprises providing transverse perforation lines in an open, unwinding strip of bag material 1, Fig. 4; forming handles on drums, laterally displaceable for bag width, from paper strip folded to form end strands 12, Fig. 3; directing the strands at 14 into the direction of advance of the bag material and depositing and glueing the handles 10 on the material by rollers conforming to the speed of the travelling bag material; blowing air on the end strands to ensure correct and flat positioning of the strands; the provision of a mandrel 6 forming the bag material into a tube and having a guide 9 facilitating the contact of handles and material and a slot 7 facilitating passage of the handles, and rollers tensioning and separating the tube at the perforations into bag lengths.
Patent GB-1223268-A (GB)
Title: Improvements in kennels for felines or canines and other like animals
IPC: A01K1/03
Filed: 1968-10-26
Abstract: 1,223,268. Kennels. J. E. CHAPPLE. 22 Jan., 1970 [26 Oct., 1968], No. 50895/68. Heading A1M. A housing for cats, dogs or like animal comprises a series of radially disposed pens extending from a central service area having facilities for feeding, cooking, washing, refrigerating and storing animal foods. Each pen includes a raised bed 5 above a heater 11, a roof vent 6 leading to the housing extractor fan, a window 7, an inward opening door 8, a flap exit 9 leading to a run 3 the exit door 12 of which can be automatically unlocked by fire alarm and detection means.
Patent GB-1095349-A (GB)
IPC: B28B13/04
Filed: 1965-12-01
Abstract: 1,095,349. Moulding concrete. H. NEESE. Dec. 1, 1965 [Dec. 2, 1964], No. 50898/65. Heading B5A. Lightweight concrete blocks are moulded and subsequently cut into sections using apparatus comprising a mould having side walls and a base comprising spaced bars between which are freely located slats forming a pallet. The loaded mould is lowered on to transport means including transverse rollers which engage the pallet slats and moves them with the moulded block thereon to a cutting device.
Patent GB-1182903-A (GB)
Title: Rack and Pinion Steering Gear.
Inventor: BRITTEN PETER GEORGE JEFFRIES
IPC: B62D3/12
Filed: 1968-10-26
Abstract: 1,182,903. Toothed gearing. FORD MOTOR CO. Ltd. 26 Oct., 1968. No. 50900/68. Heading F2Q. A rack and pinion steering gear comprises Belleville spring washers 18, 19 which cushion axial movement of a pinion 13 during shock loading. The springs 18, 19 are interposed between the pinion 13 and bearings 15, 16 which support the pinion shaft 14 in a housing 11. The springs are prestressed and locate the pinion axially.
Patent GB-1526979-A (GB)
Title: Drive assisting hydraulic devices in articulated vehicle trailers or semi-trailers
IPC: B60K17/10
Filed: 1975-12-11
Abstract: 1526979 Clutch control M MOREAU 11 Dec 1975 [12 Dec 1974] 50904/75 Heading F2L [Also in Division B7] An hydraulic motor 1, for providing driving assistance to the wheels of a trailer or semitrailer, is coupled and uncoupled by a clutch 4, the clutch engaging when the wheel speed falls below a given value or pressure in a motor line exceeds a given value and being disengaged if the speed exceeds a further value or the pressure drops below another value. A wheel speed sensor 15 and distributer 14 may be provided to control the clutch. In another embodiment (Fig. 2, not shown) a calibrated value senses the motor pressure to control the clutch. The clutch may be controlled hydraulically, pneumatically, mechanically or electromagnetically.
Patent GB-1169226-A (GB)
Title: Improvements in or relating to Towers or Beams
IPC: B66C23/28
Filed: 1966-11-15
Abstract: 1,169,226. Tower cranes. RICHIER. 15 Nov., 1966 [15 Nov., 1965], No. 51069/66. Heading B8B. [Also in Division F2] A tower or beam of lattice construction includes two sections connected together end-toend by bolts 22, Fig. 3, the sections having recesses 18, 18a through which extend dowels 20 for resisting relative lateral movement of the sections. In a second embodiment, Fig. 5, dowels are formed by bushes 25 through which pass bolts 28. The described construction is that of a tower of a crane.
Patent GB-1466608-A (GB)
Title: Conductivity measuring circuit
IPC: G01R27/22
Filed: 1974-11-27
Abstract: 1466608 Apparatus for monitoring the conductivity of a solution H A TEASS 27 Nov 1974 [27 Dec 1973] 51393/74 Heading G1N Apparatus for monitoring the conductivity of a solution comprises a conductivity cell 44 which provides an output signal voltage, means for indicating said voltage and adding it to a reference voltage, and means for generating a signal including a silicon controlled rectifier 110 responsive to the resultant sum of said voltages to generate an output signal when it exceeds a predetermined value. As shown, the conductivity cell is connected to a regulated A.C. voltage on conductor 40 via input connection 48. The voltage across thermistor 50, which will vary according to the conductivity of the solution between probes 52, is measured using a full wave bridge rectifier 62 and meter 78. A negative, D.C. reference voltage is presented to resistor 96 by means of diode 86 and potentiometer 92. The voltage adding circuit comprises diode 100, resistor 102 and capacitor 104. A thermistor 106 and resistor 108 may be provided as part of a temperature compensating network for the silicon controlled rectifier. The alarm section includes the silicon controlled rectifier, relay coil 118, relay contacts 126, 128 and moveable relay arm 130. In operation, when the voltage presented to gate 112 is negative, the silicon controlled rectifier is inoperative. Conduction is initiated only when a positive signal greater than the negative reference voltage is presented to the gate. Under normal operating conditions, the silicon controlled rectifier is arranged to be in the conductive state so as to provide a "fail-safe" mode of operation.
Patent GB-1370473-A (GB)
Title: Precast concrete duct-girder suitable for use in industrial halls  and manufacturing procedure
IPC: E04C3/26
Filed: 1971-11-05
Abstract: 1370473 Ventilating buildings INSTITUTUL DE PROIECTARI AL INDUSTRIEI USOARE 5 Nov 1971 [14 Dec 1970] 51603/71 Heading F4V [Also in Division E1] An energized concrete girder has post tensioned steel reinforcement, e.g. in bores 10 and is adapted to act as ducting for ventilating air. The girder comprises U-section caisson panels 1 provided in their bases with slots 2, and/or round, square or rectangular openings 4 which allow for discharge of air and in which fans may be mounted. In addition further openings 11 are provided on a face formed by the adjacent channel sides of the opposed panels which openings may be formed by a rectangular or circular frame in which an adjustable ventilation grille may be fitted. Apertures 3 may also be provided in the panels 1 in which secondary beams are supported. The caisson panels have projecting reinforcement 8 extending from the edge of their side walls which is overlapped with that of an opposite panel. The joints a between opposite panels 1 and b between adjacent pairs of panels are then concreted and the reinforcement tensioned.
Patent GB-517217-A (GB)
Abstract: 517,217. Sterilizing-apparatus. GENERAL ELECTRIC CO., Ltd., HUMPHREYS, O. W., and SMITH, R: June 20, 1938, No. 18256. [Class 81 (i)] A steam sterilizing-apparatus comprises a chest 1 for articles to be sterilized, a boiler 9 having a pipe connection 5 to the centrally depressed base of the chest, fitted with a valve 6 to allow steam to pass to the chest from' the boiler and condensed water to be returned thereto. A pipe 14 controlled by a valve 11 supplies steam to steaming points, e.g., 12a, and a pipe 21 having a tap 22 is provided for the supply of hot water. The valve 6 is controlled by a spindle 7 and handle 8. A slotted lever 23 is secured on the spindle 7 and is connected by a pin 24 working in the slot -to a lever 25 actuating the valve 11 the arrangement being such that the valve 6 may be opened while the valve 11 is closed, the valve 6 closed while the valve 11 is opened or both valves may be closed to cause pressure to build up in the boiler. Water will be forced up the pipe 21 by rise of pressure and may be drawn off at the tap 22. A ball valve controlled cistern 18 is provided for supplying water to the boiler.
Patent GB-1130515-A (GB)
Title: Device comprising a cylinder and a piston-like body reciprocable therein
IPC: F04B39/04
Filed: 1965-12-07
Abstract: 1,130,515. Balancing reciprocating compressors or engines. PHILIPS' GLOEILAMPFABRIKEN, N.V. Dec. 7, 1965 [Dec. 10, 1964], No. 51833/65. Headings F1M and F1N In a reciprocating compressor or engine, comprising two pistons 2, 5 separated by a body of liquid 4 and reciprocable in a cylinder 1 to vary the volume of a working space 3, the piston 2 is sealed to the cylinder by a rolling diaphragm 8 arranged to be continuously subjected to a constant pressure difference thereacross which is unaffected by the inertia forces of the piston 2 and liquid 4. The constant pressure differential is produced by a tension spring 34 connected at one end to the piston 5 and at the other end to a compensating weight 33 carried by a lever 30 connected by pivots 31, 32 to the pistons 2, 5. The mass of the weight 33 and the position of the pivots 31, 32 is chosen so that the inertia forces of the piston 2 and the liquid 4 which tend to vary the pressure difference on the diaphragm are balanced. To maintain the amount of liquid between the pistons constant, liquid continuously supplied to the space by a pump 9 is allowed to drain to the inlet of the pump at a rate determined by the co-action between the skirt of the piston 2 and holes 11 in the piston 5. The rolling diaphragm may be reversed in which case the tension spring 34 is replaced by a compression spring. The compensation weight may be connected to the pistons 2, 5 through a cable-pulley system, Fig. 5 and 6 (not shown) instead of by a lever.
Patent GB-1405950-A (GB)
Title: Process for preparing non-woven webs
IPC: D01F6/04
Filed: 1972-11-09
Abstract: 1405950 Forming non-woven fabrics MITSUI PETROCHEMICAL INDUSTRIES Ltd 9 Nov 1972 51894/72 Heading D1R A non-woven fabric of randomly orientated continuous filaments is made by melt-spinning a polyolefin containing 0.01 to 5%, by weight of one or more compounds of formula: where S is sulphur, P is phosphorous, Y<SP>1</SP>, Y<SP>2</SP> and Y<SP>3</SP> are each oxygen or sulphur, n is 0 or 1 and either R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are each an alkyl group of at least 6 carbon atoms or one of R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> is hydrogen and the remainder are alkyl groups of at least 6 carbon atoms, drawing the filaments thus obtained by jetting air against the filaments and collecting them upon a travelling conveyor. The polyolefin may be high density polyethylene, polypropylene, ethylene-propylene copolymer, polybutene-1 and poly-4-methylpentene-1. Preferably R', R<SP>2</SP>, R<SP>3</SP> are alkyl groups with 8 to 20 carbon atoms. When the mixture of polyolefin and phosphorous compound is heated to 200- 350‹C for 4-15 minutes, preferably in the melt spinner some chain degradation occurs particularily to the longer chains thus producing a narrower molecular weight distribution. The tensile strength of the filaments is increased and breakage during drawing is reduced. The extruded mixture may contain 0.2% of 2, 6-di-tert-butyl-p-cresol or 0.1% of tetrakis (3, 5-di tert. butyl-4-hydroxy-α, #-dihydrocinnamateoxymethyl) methane.
Patent GB-1306569-A (GB)
Title: Seal
IPC: B65D85/62
Filed: 1971-11-11
Abstract: 1306569 Seals: STRAPEX AG 11 Nov 1971 [10 Dec 1970] 52341/71 Heading B6P Seal blanks are provided with recesses 4 and 7 and projections 5 and 6 which enable them to be stacked.
Patent GB-1472097-A (GB)
Title: Surgical compression-distraction instrument
IPC: A61B17/62
Filed: 1974-12-11
Abstract: 1472097 Fracture appliance RIZH NI INST TRAVMATOLOGII I ORTOPEDII 11 Dec 1974 53515/74 Heading A5R An appliance for applying compression or distraction to a fracture comprises rings 1 with needles 3 attached thereto by clamps and passing through the bone fragments of the fracture, helical springs (4) interconnecting the rings 1 and providing compression or distraction, and resilient rods 9 providing rigidity for the appliance. The springs (4) may each be in two segments, one left handed, the other right handed, and connected by a nut 8 which when turned shortens or lengthens the spring. After positioning the appliance in use an extra splitring, Fig. 4 (not shown), may be added without removing the appliance, said split-ring having seats on its outer surface to accommodate the springs and/or rods and brackets, Fig. 7 (not shown) to affix them thereto. Additional needles may also be affixed by clamps, Fig. 6 (not shown). To change the tension in the springs nuts 5 each have a set screw which engages the rod 9 with its end and the spring (4) with its side so that, by loosening, it may slide along the rod carrying the spring with it and be retightened then with the spring in a different tension, Fig. 3 (not shown).
Patent GB-1496150-A (GB)
Title: Yarn tensioning devices
IPC: B65H59/10
Filed: 1974-12-12
Abstract: 1496150 Yarn tensioner HACABO - TEXTILMASCHINEN GmbH & CO KG 12 Dec 1974 53865/74 Headings DID and D1J A yarn tensioning device comprises two freely rotatably mounted parallel rollers, at least one of the rollers having an outer periphery of elastomeric material, and means for urging the rollers into surface contact to elastically deform the elastomeric material to effect a desired yarn-tensioning, resistance to roller rotation. As shown, Fig. 1 yarn F passes between rubber - covered rollers 2, 3 the roller 3 being mounted on arm 7 pivotable at 8 by micrometer screw 12, 13. Guides 17 one of ceramic material. Roller 2 may be of metal. The yarn may be completely looped around an extension of one roller 20, Fig. 5. The extension may be of different diameter to the roller 20. The rollers may be supported on different rails 40, 41 Fig. 8, one roller being mounted on pivotal arm 48. Rail 40 may be slidable parallel to rail 40 by a micrometer screw and in a creel Fig. 10, the slidable ribs 40 may be slid together by a rod and gear system. One or both rollers may support a dust-removing and cooling fan 62, Fig. 8.
Patent GB-1454217-A (GB)
Title: Vacuum brazing of  super-alloy articles
IPC: B23K1/20
Filed: 1974-12-16
Abstract: 1454217 Brazing WALL COLMONOY CORP 16 Dec 1974 [14 Dec 1973] 54293/74 Heading B3R [Also in Divisions C7] In braze repairing or brazing an article or a superalloy containing 2-10% Al and/or 2- 10% Ti, the surfaces of the article are cleaned, a brazing filler metal is applied to the article, the article is placed in an enclosure containing a material having an affinity for oxygen at least equal to that of the Al and/or Ti in the article and the article is heated in a vacuum while in the enclosure. The superalloy is a Ni, Co or Cr based alloy and the articles which may be treated are gas turbine blades, combustion chamber liners, nozzles, ducts, &c. especially to repair eroded surfaces, cavities, thermal fatique cracks &c. and parts of nuclear reactors. In an embodiment a cracked jet engine part is solvent or vapour degreased and then cleaned in a hot salt bath containing 9- 15% sodium nitrate, 5-15% sodium chloride, 8-20% potassium hydroxide and 50-78% sodium hydroxide. The part is rinsed in water, pickled in dilute acid solution, water rinsed again and dried. Brazing metal, e.g. an alloy containing 19% Cr, 10.2% Si, rest Ni, in powder form mixed with a fugitive binder to form a paste is applied to the part and the part is placed on pedestals 44 of alumina in a box 34 in a furnace 10. The box which is carried on a table 30 comprises a bottom 38 and a loose, non-gas tight, lid 36 of stainless steel with an intermediate layer of alumina and an inner lining of material having a greater affinity for oxygen than Al and/or Ti, e.g. zirconium or an alloy thereof. Titanium may be employed in addition to zirconium. A hard vacuum is initially provided in the electrically heated furnace, the furnace is then filled with argon or helium and then again evacuated and a temperature of above 1800‹ F. is produced in the furnace to melt the brazing metal and held to cause diffusion thereof. In an example thermal fatigue fractured turbine vane is repaired, the vane being formed from an alloy containing 0À15% C; 15À5% Cr; 9À7% Co; 8À4% Mo; 3À6% Ti; 4À2% Al; balance Ni, and the heating for brazing and diffusion is to a temperature of 2150‹ F. held for 30 minutes.
Patent GB-1200182-A (GB)
Title: Apparatus for assembling battery plate packs
Inventor: HARRIS JOHN DEREK
IPC: H01M10/14
Filed: 1966-12-15
Abstract: 1,200,182. Endless conveyers. JOSEPH LUCAS (INDUSTRIES) Ltd. 30 Nov., 1967 [15 Dec., 1966], No.56175/66. Heading B8A. [Also in Division H1] Apparatus for assembling battery plate packs comprises a conveyer having a laterally inclined surface, a wall upstanding from the lower edge of the surface and means on the conveyer for transferring battery plates and separators alternately from a plurality of fixed stations on to the surface so that they are arranged thereon in a pack with one edge contacting the wall. As shown a number of carriers on the chain drive 11 (Fig. 2, not shown) each have an inclined surface 14, wall 15 and finger 16. The stations 17 each have a channel which allows passage of the finger 16 which extracts a plate (or separator) 18 through slot 21. After each carrier 13 has passed the last station 17 it passes an unloading station 22 (Fig. 3, not shown) where the pack is removed from carrier 13.