baber/WOPTO huggingface dataset:
Patent GB-1354400-A (GB)
Title: Method of coating the inner surfaces of pipes with plastics
IPC: B29C41/22
Filed: 1971-10-25
Abstract: 1354400 Coating pipes METALLGESELLSCHAFT AG 25 Oct 1971 [24 Oct 1970 3 Dec 1970 4 Sept 1971(2)] 49520/71 Headings B2E and B2L The internal surface of a pipe 1 is coated with powdered plastics material by passing a current of air charged with the powder through the pipe whilst heating the pipe by means of an induction coil 2 and subsequently passing a current of air free from powder through the pipe. Relative movement between the induction coil is caused either by movement of the coil or movement of the pipe. As shown in Fig. 2 powder from a metering device 8 is blown by a fan 9 through a flexible tube 30 to the inside of pipe 1 and thence through a cooler 18 back to the device 8. The pipe, mounted on a carriage 32 is moved relative to an induction heating coil 2. When sufficient powder has passed through the pipe 1, this being determined by movement limit switches 16, 17 valves 12-15 are operated so that powder is by-passed around the tube 19 and the fan 11 blows clean air through the tube 30 and thence through the pipe 1. Any excess powder remaining in the system is collected by means of a cyclone 10. The induction coil is operated during the smoothing operation whilst the powder free air is circulated. Additional external cooling sprays 33, 34 can be provided to cool the pipe 1 adjacent the heating coil 2. Fig. 4 shows a further embodiment in which the pipe 1 to be coated is mounted in a fixed position and a valve 12 is used to allow either powder laden air from pipe 6 or powder free air from pipe 7 to pass through the pipe 1. In this embodiment the outside of the pipe is also coated by immersion in a fluidised bed of powder 24 which, with the induction heating coil 2, moves relative to the pipe 1. Other embodiments are described which show different arrangements of valves and pipe systems. Any suitable plastics material may be used for the coating operation. The pipe to be coated is of mild steel and may be coated with polyundecamide powder, polyethylene powder, polyamides, polyolefins, polyvinyl comounds phenolic resins, polyesters, polyepoxides or butadiene-styrene polymers.
Patent GB-1079939-A (GB)
Title: Well pump
Inventor: JUCH ARIE HERBERT
IPC: F04B47/00
Filed: 1964-12-07
Abstract: 1,079,939. Reciprocating pumps. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Dec.7, 1964, No.49749/64. Heading F1A. A well pump for liquids mixed with gases comprises two bucket pistons 1, 2 connected by hollow member 3 and reciprocated by a pump rod 15 which is encircled by delivery valve 13, the stroke volume of the suction chamber 10 being larger than that of the compression chamber 9. The bucket valve 7 is optional. Chamber 10 is formed by the well tubing 21, and chamber 9 by a cylinder liner 19. Alternatively, both chambers may be formed by cylinder liners of different diameters. In Fig. 3 (not shown), the suction chamber comprises spaces (44) and (33), liquid entering and leaving space (33) via ports (32) in connecting member (28). Either chamber (30) or all three chambers may be formed by the well tubing. In Fig. 8 (not shown), three suction chambers (81), (88) and (101) have separate, valve-controlled inlets and deliver to a common compression chamber (97). In other embodiments, either chamber (88) or chamber (101) does not function as a suction chamber. Cylinder and valve mountings 20 and 14 incorporate resilient fingers, Figs. 9 and 10 (not shown) for removably securing them in the well tubing. Valve 13 may be spring-loaded, Fig. 11 (not shown), or may be replaced by a valve having a separate seating ring, Fig. 12 (not shown).
Patent GB-1065245-A (GB)
Title: Fuel injection apparatus for internal combustion engines
IPC: F02M47/02
Filed: 1963-12-18
Abstract: 1,065,245. Fuel injection systems. J.L. GRATZMULLER. Dec.18, 1963 [Dec. 20, 1962], No.49903/63. Heading F1B. Fuel is supplied to an accumulator space 4, the outlet passage 12 of which leading to the injector is controlled by a valve 28 held closed by fuel pressure supplied to chamber 30, release of the fuel pressure permitting valve 28 to rise and the fuel to be injected. The chamber 4 has a spring-loaded accumulator piston 6, fuel under pressure being delivered through non-return valves 58, 26, to the spaces 4, 30 prior to injection and the pressure in chamber 30 being released for injection by a differential pressure operated valve 60B when pump piston 52 moves down. The stroke of piston 6 may be limited by an adjustable stop. In Fig. 3 (not shown) the amount of fuel stored in chamber 4a on each stroke is limited by a valve (70'), carried by the accumulator piston (6'), which is lifted by an adjustable stop (68) to limit the piston travel. In Fig. 4 (not shown) which is a practical embodiment of Fig.3, the valve piston (28"), non-return valve (26") and accumulator piston (6") are arranged coaxially. Fuel supplied through passage (100) acts on piston (28") to hold the injection valve (14") closed and passes through valve (26") to the accumulator space (4") and lifts piston (6") by an amount governed by adjustable stop (72b) co-operating with a relief valve (70") in the piston. When the fuel pressure in passage (100) is released, the valve (14") opens and the piston (6") descends to force the fuel in space (4") through passage (88) to the injection orifices until the piston (6") contacts the valve stem (86) and closes the injection valve (14").
Patent GB-1324793-A (GB)
Title: Logic gates
IPC: H03K19/0944
Filed: 1970-10-21
Abstract: 1324793 Transistor gate circuits TELETYPE CORP 21 Oct 1970 [27 Oct 1969] 49929/70 Heading H3T The input - V to a chain of switching circuits 10, 11 is connected to the output X 1  only when a predetermined combination of control signals A, A, B, B exists. The Fig. 1 circuit is a NAND gate, in which only if A and B are 0 to turn off F.E.T's 13, 16, and A, B are consequently 1 to turn on F.E.T's 12, 14, is the output connected to - V through F.E.T's 12, 14. Any other combination of A, A, B, B earths the output through F.E.T. 13 or 16. In a modification (Fig. 3, not shown) the - V input is replaced by an inverter (37) receiving a further bit signal D, and the earth connections are replaced by connections to one of the bit control signals (now called E, E, F, F). The output (X2) is then connected to D only when E, F are both 1. Otherwise, X2 is connected to whichever of E, F is 0 to give an output of 0.
Patent GB-1366873-A (GB)
Title: Tie arrangement for tying a wall or cladding
IPC: E06B1/60
Filed: 1971-10-21
Abstract: 1366873 Connecting means for cladding, wall ties CONDER INTERNATIONAL Ltd 21 Oct 1971 [21 Oct 1970] 50084/70 Heading E1B Means for supporting cladding or interconnecting two skins of a cavity wall comprises a channel member 4 for securing vertically to one skin and a tie or bracket having a bifurcated portion 2 for supporting or connecting to the other skin and a connecting portion 3 of angle section formed with slots 5 which engage around inturned flanges 6 of the channel. Further slots 7 resist penetration of water along the tie. The base of the channel is formed with keyhole slots for securing it to a wall.
Patent GB-1533564-A (GB)
Title: Device for locking turbomachinery blades
IPC: F04D29/34
Filed: 1975-12-11
Abstract: 1533564 Rotor blade fixing GENERAL ELECTRIC CO 11 Dec 1975 [10 Feb 1975] 50836/75 Heading FIT Locking of the root of a rotor blade in an axial groove in the periphery of a fan or turbine rotor disc, is effected by a pair of retainer pins 28, 30 having enlarged ends providing abutment surfaces 44, 45 for the disc and root and inserted together or in sequence into the gap between the root and the bottom of the groove, a spacer member 32 of inverted T-shape cross-section being inserted so that the leg 50 of the T-shape separates the members 28, 30 circumferentially while a resilient spring member 80 positioned in a recess 70 in the base urges the members radially-outwardly against the root. A nut and bolt 36, 34 retains the members 28, 30 and 32 against relative axial movement.
Patent GB-1074820-A (GB)
Title: Brewing apparatus for beverage-making
IPC: A47J31/40
Filed: 1963-12-24
Abstract: 1,074,820. Beverage-making machines. WURTTEMBERGISCHE METALLWARENFABRIK. Dec. 24, 1963 [Dec. 27, 1962], No. 51000/63. Addition to 1,041,251. Heading A4D. In the scavenging step of the brewing cycle of the machine of the parent Specification, the rim of an inverted brew container is surrounded by two semi-circular splash-preventing screens 14, 15, thus enabling the spray water to be directed on to the sealing gasket around the rim without splashing the surrounding parts. When the container is upright, its bottom is at a higher level than that assumed in the inverted position by its rim. The upright container can accordingly ride freely over the screens 14 and 15. The screens are mounted on pistons 18, 19 and, on admitting fluid to cylinder 16 through ducts 27, 28, the pistons are moved towards one another to compress return spring 20. Clamping engagement of the container in the brewing position is effected by wedge action of rollers 34 on co-operating inclined guide rails on upper 4 and lower clamping covers. The container is mounted with vertical play on the piston rod of the main control ram, to avoid undue stress at this point when being clamped between the covers.
Patent GB-1413052-A (GB)
Title: Fluoroaliphatic radical-containing carbodiimides
IPC: D06M101/16
Filed: 1973-03-05
Abstract: 1413052 Fluorine containing carbodiimides MINNESOTA MINING & MFG CO 5 March 1973 [6 March 1972] 51468/74 Divided out of 1413051 Heading C3R [Also in Divisions D1 and C2] A fluoroaliphatic radical-containing carbodiimide which is free from isocyanate-reactive hydrogen atoms, has the formula in which n is 0 or an integer from 1 to 20, A is a divalent organic linking group and B is a monovalent organic terminal group, at least one of A and B including fluoroaliphatic radicals with terminal CF 3  groups of from 3 to 20 fully fluorinated carbon atoms. A may be alkylene (2-10 C) aralkylene (up to 10 C), e.g. or tolylene, or polyoxyalkylene (up to 5 units) and may contain pendant fluoroaliphatic, e.g. perfluoro octylsulphonamido radicals, B may be an aliphatic, aralkyl or aryl group and may be fluorinated. In examples, N,N-dihydroxyethyl perfluoro octylsulphonamide, N - ethyl, N- hydroxyethyl perfluorooctyl sulphonamide, or N-methyl, N-hydroxyethyl perfluoro octyl sulphonamide is condensed with tolylene diisocyanate or di-(isocyanato methylene) benzene in various molecular proportions in methyl isobutyl ketone using a 3-methyl-1- phenyl - 3 - phospholine - 1 - oxide catalyst. The reaction mixture may further contain ethylene glycol, resorcinol or The resulting carbodiimide may be emulsified in water with a mixture of polyoxyethylene sorbitan monooleate and a quaternary ammonium group containing perfluorooctyl sulphonamide derivative.
Patent GB-1353529-A (GB)
Title: Semiconductor rectifier assemblies
IPC: H01L/
Filed: 1971-11-09
Abstract: 1353529 Semi-conductor rectifiers GENERAL ELECTRIC CO 9 Nov 1971 [9 Nov 1970] 51942/71 Heading H1K A semi-conductor rectifier wafer containing one or more PN junctions is contained in a casing 2A (Fig. 2) one flat terminal surface of which is clamped to an electrode 6 consisting of two plates 8, 9 which together with fins 12 extending between them define cooling ducts, the clamping pressure being communicated through plates 8, 9, the fins 12 and the rectifier itself. In the illustrated embodiment two pairs of rectifiers 2A, 2B and 2C, 2D (not shown) are clamped between two such electrodes 6, 7 of which the fins are formed integral with one or both of the plates from an aluminium extrusion. The plates are clamped together by two bolts 18 located between rectifiers 2A and 2B, and 2C and 2D respectively, clamping pressure being communicated via Belleville washers or via leaf springs 20, 21 mounted on each bolt and bearing at slots 26 on conical pressure spreading members located on the axes of the rectifiers. Insulation is provided between bolt 18 and electrode 7 by sleeve 32A and cup 32. The assembly shown may be series connected with another via flanges 29, 30 on the electrodes and an insulating enclosure attached by bolts engaging holes 31. In an alternative arrangement the parts of the assemblies to the right of plate 8 and a similar set of parts are mounted back to back on a longer bolt to which the centre electrode is electrically connected. Alternatively, if the rectifiers are of the thyristor type, the two end electrodes may be commoned as one terminal and the centre electrode used as the other terminal of an A.C. switching element. For lower current loading dummies may be substituted for one or more of the rectifiers. Parts 9 and 11 are flexible enough to adapt to any non- planarity of the rectifier terminal surfaces and the fins closely spaced to ensure turbulent flow of the coolant.
Patent GB-1120233-A (GB)
Title: A method of joining rope parts together utilizing a rope clamp blank
IPC: F16G11/02
Filed: 1965-12-07
Abstract: 1,120,233. Joining rope parts. O. SAHM. 7 Dec., 1965 [9 Dec., 1964], No. 51945/65. Heading D1T. A method of joining rope parts comprises the steps of inserting the rope parts to be joined into a tubular rope clip blank, Fig. 3, having in cross-section a pair of straight parallel sided side walls 5 joined at each end by generally semi-circular end walls 4, inserting the blank between a set of dies, Fig. 2, each having one part cylindrical and one part-conical portion, the length c of the blank being less than the length a of said part-cylindrical portions of the dies by an amount such that when the dies are closed on the blank the blank is formed into a cylindrical-conical shape, Fig. 4 (not shown), in situ upon the rope parts to be joined, and closing the dies.
Patent GB-1446939-A (GB)
Title: Cutting equipment
IPC: B22D11/126
Filed: 1973-11-08
Abstract: 1446939 Shearing CREUSOT-LOIRE ENTERPRISES 8 Nov 1973 [8 Dec 1972] 51953/73 Heading B3W For shearing billets &c. produced by a multiline continuous casting plant, shears A, B, C &c., each comprising a pair of blades supported by a frame 1 and relatively movable for cutting by rotation of a crank- or eccentricshaft 2, have their shafts axially aligned and coupled to a common drive means 28, and means are provided for angularly adjusting each frame individually relative to its shaft. As shown, Fig. 1, a fixed blade 12 cooperates with a blade 11 mounted on a fluid cylinder 8, the piston 7 of which is connected to a slide 4 reciprocable by shaft 2. The blade 11 cuts progressively through the thickness of a billet 20 as follows. The chamber 10 of cylinder 8 is pressurised which raises the cylinder 8 and blade 11 into engagement with the billet. Rotation of the crankshaft raises the piston 7 which causes the pressure to rise in the chamber 10 and close a non return valve 17. The piston and cylinder then move upwardly as a unit and the blade penetrates the billet. Driving the return portion of the shaft rotation, the valve 17 opens and a fresh supply of fluid from source 16 maintains the cylinder 8 in its raised position, i.e. with the blade 11 having penetrated the billet by a distance equal to the throw of the eccentric 3. The next-rotation causes the blade 11 to penetrate further into the billet by the same distance and this is continued until the billet is sheared. Counterpressure is exerted by a fluid cylinder 22. Each shaft is supported in a pair of plates 26 and the shafts of adjacent shears are coupled at 25, Fig. 2. Each shear frame is pivoted on itsshaft at 27 and its angular disposition is variable by a ram 31. In operation, the ram is actuated to tilt the frame slightly towards the feed side in readiness for a cut. As soon as the blades have penetrated the billet the ram is released and allows slight pivoting of the frame about the shaft during the shearing operation. The operation of the three shears shown in Fig. 2 may be staggered by disposing their eccentrics 3 at positions 120 degrees apart about their shafts. The progressive cutting action may be acheived by using racks or rachets instead of the fluid cylinder device 7, 8.
Patent GB-1417979-A (GB)
Title: Containers
IPC: B65D43/04
Filed: 1972-11-10
Abstract: 1417979 Lever lids METAL BOX Ltd 23 Aug 1973 [10 Nov 1972] 52042/72 Heading B8D A can comprises a can body 1 provided with cylindrical neck 2 joined by surrounding channel to the can body and terminating in a mouth-defining curl 3, and lid having a skirt depending from a crown 4, and including an inner annular wall 5 having an interference fit along the length of the neck, and an outer annular wall 6 spaced from and joined to the inner wall at its end remote from the crown by a curved rim portion 7. As shown, the mouthdefining curl 3 is inwardly-directed and the inner skirt wall terminates in a partial, outturned curl 8 spaced from the outer wall to permit flexing of the inner wall. In a modification, Fig. 2 (not shown), the mouth-defining curl 10 is outwardly directed and inset so that its maximum diameter is the same as that of the neck. In another modification, Fig. 3 (not shown), the upper end of the outer wall 6 terminates in an inturned partial curl 8. In another aspect of the invention, Fig. 4 (not shown), the skirt comprises a single wall 5, which terminates in an outwardly curled bead 7. Removal may be effected by levering up of the rim portion 7 using the neck/body seam as a fulcrum.
Patent GB-1070893-A (GB)
Title: Isoprene sodium treatment process
IPC: C07C7/148
Filed: 1965-12-08
Abstract: Isoprene is treated to remove polymerization inhibitors therefrom by contact with a dispersion of sodium metal in an organic medium to cause reaction of sodium with said inhibitors, and then removing isoprene from the mixture by flashing in an inert atmosphere (e.g. N2, CO2) at a temperature substantially above the boiling point of isoprene but low enough to avoid polymerization thereof, e.g. 70-110 DEG  C. After reaction with the sodium and before flashing, the mixture may be added to a high boiling diluent (e.g. mineral oil, paraffin wax, or petrolatum) in which the residue remains after flashing.
Patent GB-1351368-A (GB)
Title: Process for the manufacture of aqueous styrene-acrylic acid ester copolymer dispersions
IPC: C08F222/14
Filed: 1971-11-10
Abstract: 1351368 Substantially monomer free styrene copolymer dispersions WACKER-CHEMIE GmbH 10 Nov 1971 [9 Dec 1970] 52173/71 Heading C3P Substantially monomer free dispersions of copolymers of 20-70% by wt. styrene and 80-30% by wt. of copolymerizable monomers of which 40-100% comprises at least one aliphatic C 1-18  alcohol ester of acrylic acid and 0-60% comprises at least one aliphatic C 1-18  alcohol diester of an α,#-unsaturated dicarboxylic acid, are made by a process in which the monomers are radically polymerized at 0-100‹ C. in the presence of at least one emulsifier and/or protective colloid and wherein, after the residual monomer has dropped to less than 3% by weight (based on total monomer), an amount of 0À2- 10% by wt. (based on the polymer) of a vinyl ester of a C 1-3  carboxylic acid is added to the dispersion which has been made to have a pH of 3-7, and the mixture is after polymerized at 50-100‹ C. Vinyl acetate is the preferred vinyl ester, but vinyl formate and propionate may also be used. The initial dispersion polymerization is of the well known type and lists of known emulsifiers, protective colloids and initiators are given. In the stage when the vinyl ester is added, it may be necessary to add further initiator, but this is not always so. The polymer may also contain up to 5% by wt. (based on total monomers) of a water soluble α,#-unsaturated monomer such as acrylic or methacrylic acids or their salts, acrylamide, methacrylamide and their N-methylol derivatives, vinylsulphonic acid, and fumaric, maleic or itaconic acid or their semi esters or amides. The polymers are odourless and suitable for use in paints, as binders, coating materials and many other applications. In the examples, butyl acrylate, 2- ethylhexyl acrylate, propyl acrylate and diethylhexyl fumarate are copolymerized with styrene, and two or more of vinylsulphonate, acrylic acid and acrylamide, except in Example 11. All examples utilize vinyl acetate, except example 7 which uses vinyl propionate.
Patent GB-1131417-A (GB)
Title: Dicode decoding
IPC: H04L25/48
Filed: 1965-12-09
Abstract: 1,131,417. Transistor pulse circuits; facsimile transmission circuits. XEROX CORP. 9 Dec., 1965 [17 Dec., 1964], No. 52190/65. Headings H3T and H4F. A pulse train of the type shown in Fig. 2A or 2B and representing the transitions of the facsimile or other binary signal of Fig. 1, are restored to the original form (Fig. 3) by integration and the integrated signal is fed back to the integrator in such a sense as to tend to oppose a change and with an amplitude depending upon the amplitude of the input train in its output. By this means progressive integration of short-noise pulses may be avoided since the integrator tends to return to its previous value between these pulses. In Fig. 5 positive pulses at the input control the current through transistor Q1 so that the pulse is integrated in capacitor 12. Likewise negative pulses are integrated by the action of Q2. The capacitor voltage is accordingly as shown in Fig. 3, passing through zero at the peak of the input pulses. This voltage is amplified by Q3 and Q4 and applied to a threshold circuit Q5 whereby a square waveform similar to Fig. 1 is provided from the emitter follower Q6. This waveform is amplified by Q7 and Q8 and fed back through R5 to the integrating capacitor so that after a short interference pulse the capacitor voltage tends to return to its level before the pulse and not to cumulatively integrate these pulses. The input signal at 9 is also applied through an amplifier Q9, Q10 to a voltage tripling rectifier circuit to provide a voltage representing the amplitude of the signal. This is amplified by Q11 and Q12, reduced in level by Q13, R6 and R7 and applied to a phase splitter Q15, Q16 to provide the integrator supply voltage +V, - V. By providing an amplitude dependent supply, errors in the integrating may be corrected and the capacitor voltage excursion limited at a desired level. The output from the phase splitter is also applied to the emitter and collector of Q7 so that the feedback voltage supplied through R5 to the integrating capacitor is the same as the integrator supply voltage and the capacitor voltage tends to return to the same voltage as is produced by the signal. Q14 also supplies a negative bias for the emitter of Q6. The threshold circuit may be replaced by a Schmidt trigger.
Patent GB-1145189-A (GB)
Title: Lubricant additives
Inventor: BRANCH SIDNEY JOHN
Filed: 1966-11-22
Abstract: 1,145,189. Lubricants. BP CHEMICALS (U.K.) Ltd. 9 Nov., 1967 [22 Nov., 1966], No. 52215/66. Heading C5F. A lubricant comprises a base oil, at least one substituted 2-hydroxyphenylamine of formula where X is phenyl; naphthyl ; biphenyl ; phenyl substituted with alkyl, alkoxy or halogen; or a radical of formula where Y is arylene and R<SP>1</SP> and R<SP>2</SP> are alkyl, aralkyl, alkenyl or aralkenyl; and an organic compound containing a sulphide or polysulphide linkage. Sulphides specified are 4,4<SP>1</SP>-thiobis-(2- methyl - 6 - tert - butyl phenol), lauryl dithiopropionate, and compounds prepared by the sulphurization of terpenes and chlorinated oils. The base oil may be mineral or synthetic, e.g. dioctyl sebacate, trimethylol propane tricaprylate pentaerythritol esters and the keto esters described in Specification 1,036,692. The composition may also contain calcium petroleum sulphonate, overbased calcium phenates and a polyisobutylene succinimide.