baber/WOPTO huggingface dataset:
Patent GB-1060798-A (GB)
Title: Compressor lubrication arrangement
IPC: F25B31/00
Filed: 1964-11-20
Abstract: 1,060,798. Compressors. LENNOX INDUSTRIES Inc. Nov. 20, 1964 [April 20, 1964], No.47441/64. Heading F1N. A vertically arranged crank-shaft (34), Figs. 3 and 4 (not shown), in a positive displacement type of compressor has three spaced apart ducts (100), (97), (99) each extending from the axial face which is the base of the crank-shaft and communicating with the longitudinal exterior surface of the crank-shaft. The crank-shaft (34) is journalled within lower bearing (86) mounted in the head (87) which has a central opening (90) coaxially beneath eye (102). The connecting rods of the pistons of the compressor are fixed to the eccentric portion (35) of the crank-shaft. The three ducts (100), (97), (99) form the basis of three separate pump means within the crank-shaft (34). Pump (92) comprises the offset lubricant passage or duct (100) which communicates adjacent its lower end with radial bore (101) intersecting the eye (102) of the pump means and at its upper end with transverse, radially disposed bores (103) and (105), thus lubricating upper bearings (94) and (96). The pumps (97) and (99) each comprise a vertically disposed offset passage in the bottom portion of shaft (34) and each communicates at its lower end with the eye (102) and at its upper end with respective passages (113) and (114) to lubricate the connecting rod bearing surfaces. Pump (97), which is vented from upper port (113) by a longitudinally extending groove (120) in the exterior surface of the crank-shaft, functions as a low pressure pump. Pump (99), which is not vented, functions as a high pressure pump. The ends of bores (101), (112) and (116) provide lubricant at lower bearing (86).
Patent GB-1120321-A (GB)
Title: Improvements in or relating to hydraulic displacement devices such as pumps or motors
Inventor: ANDREWS THOMAS DESMOND HUDSON
IPC: F01B1/06
Filed: 1964-11-23
Abstract: 1,120,321. Eccentric-rods. DOWTY TECHNICAL DEVELOPMENTS Ltd. 11 Nov., 1965 [23 Nov., 1964], No. 47493/64. Heading F2K. [Also in Division F1] In an hydraulic pump or motor comprising at least one pair of cylinders extending in different directions from a shaft and having pistons associated with a single eccentric bearing member on the shaft, each piston is secured to a connecting rod 58 having a hollow cylindrical bearing rotatably carried on the bearing member each cylindrical bearing having a first part 67 adjacent the connecting rod 58 which is wider than a second part 68 opposite the connecting rod, the arrangement being such that the first part 67 is adjacent the second part 68 of another hollow cylindrical bearing and the second part 68 is adjacent the first part 67 of the other cylindrical bearing. A lubricating pump on the shaft supplies the shaft bearings and the bearing grooves 69, 71 which are fed from passage 26 during the pressure stroke.
Patent GB-1404287-A (GB)
Title: Determination of properties of metals
IPC: G01N3/08
Filed: 1973-10-11
Abstract: 1404287 Tension testing metals CENTRE DE RECHERCHES METALLURGIQUESCENTRUM VOOR RESEARCH IN DE METALLURGIE and COCKERILL-OUGREEPROVIDENCE ET ESPERANCE-LONGDOZ EN ABREGE COCKERILL SA 11 Oct 1973 [11 Oct 1972] 47594/73 Heading G1S A horizontal tension testing machine, Fig.1, which may be automatically operated by a computer via a remote control desk or manually operated if desired, comprises hydraulically operated locking jaws 4, 5 which may be moved apart at the same time and speed by an hydraulic piston device 1 connected by pivoted links 6 and 9 to spindles 2, 3. The longitudinal and lateral dimensions of the test piece are measured by twin systems which may be raised into contact with the test piece. In Fig.2 carriages 21, 22 carrying longitudinal marking pins 23, 24 are displaced along the tract on axis T-T on tracks 25, 26, and carriages 27, 28 bearing transverse marking pins 29, 30 are displaceable on tracks 31, 32, the centres of the two systems coinciding at 33. A stress detector which transmits a signal proportional to the stress is inserted in the hydraulic power circuit. In operation the test piece is first measured for length and width and then placed between the jaws. These initial dimensions are then typed into the computer which on automatic operation then takes control, verifies the presence of the test piece tightens the clamps and applies the stress. When an initial tension is reached the twin measuring systems are raised and the tension increased and stresses and strains measured to determine proof stress, yield stress and so on. When the tension reaches a definite value above the yield stress at 0.2% elongation the computer shifts the machine into a higher speed of traction. Tests are made at various percentages of elongation to measure other factors and moduli and at the same time the computer seeks the tensile strength and the elongation at fracture. The calculation results are then printed out and the tests stopped.
Patent GB-1041069-A (GB)
Title: Method of drilling a hole in a permeable underground formation and drilling fluid suitable for carrying out the said method
Inventor: JONGBLOED LODEWIJK JOHANNES SC
IPC: C09K8/24
Filed: 1963-12-04
Abstract: 1,041,069. Boring earth &c. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Dec. 4, 1963, No. 47994/63. Heading E1F. A method of drilling a bore hole in a permeable underground formation using a rotary bit comprises contacting the bottom of the borehole with drilling fluid at a pressure higher than the pressure in the formation pore space, the composition of the drilling fluid being such that it has little plastering effect on the wall of the borehole but deposits particles in the pore space to substantially obstruct the passage therethrough. The particles, which may be solids, such as bitumen or polymers, or droplets preferably consisting of hydrocarbons, form 0À5-15% by weight of the fluid. The particles may be suspended in water which may be weighted with sodium chloride or sodium nitrate and contain an emulsifyer such as a quarternary ammonium compound or lignin derivative. Reference has been directed by Comptroller to Specification 934,165.
Patent GB-1196099-A (GB)
Title: An Electrical Connector
Inventor: GABRIEL GERHARD
IPC: H01R13/74
Filed: 1968-10-16
Abstract: 1,196,099. Two-part couplings. WILHELM HARTING WERK FUR ELEKTROTECHNIK UND MECHANIK. 16 Oct., 1968 [31 Oct., 1967], No. 49131/68. Heading H2E. An electrical connector, designed to be fitted in an opening in a support panel 4 or the like, comprises two mating halves A, B, each formed in one piece from a resilient insulating material by injection moulding. The halves are held together by complementary hooks 16, 17, and the connector is held in the panel 4 by the engagement of the panel edges with grooves 12 in resilient curved members 11, which are formed integrally with one half B of the connector casing. The hooks 16 on the half B are relatively short and rigid, whereas those 17 on the other half A are longer and more resilient, and form part of a two-arm lever, the other arm being a grooved handle 20 for easy release of the hooks by inward pressure, as illustrated. Each set of contact pins is surrounded by a thin-walled protective collar (22, Fig. 1, not shown) which fits over the socket mountings of the other connector half (Fig. 5, not shown). Interfitting ribs (25) and grooves (26) ensure correct polarity. In alternative embodiments (Figs. 7, 9, 10, 11, not shown) several sets of three contacts are mounted in each connector half. The contact elements (K) are mounted in chambers (30a, 30b, Figs. 3, 6, not shown) in the connector halves, are provided with soldered or crimped connections, and are releasable from the chambers by means of a tool. The elements (for example pins 1 and sleeves 2) have symmetrical stops (31a, 31b) and, facing them, symmetrical resilient locking tongues (32a, 32b).
Patent GB-1397452-A (GB)
Title: Threshold logic gate circuits employing field-effect transistors
IPC: H03K19/0948
Filed: 1972-10-25
Abstract: 1397452 F.E.T. logic circuits RCA CORPORATION 25 Oct 1972 [28 Oct 1971] 49175/72 Heading H3T A threshold logic gate consists of at least two pairs of complementary series F.E.T.'s P1, N1, P2, N2 connected across a supply + V, - V, the junctions between the F.E.T.'s of each pair being connected to a common output 16, and the commoned gates of each pair being connected to respective inputs X1, X2, X3. If, say, X1, X2 are 1 (+V) and X3 is 0 (- V) then N1, N2, P3 are on. The parallel resistance of N1, N2 being less than the resistance of P3, the minority output 16 is negative (0). An inverter P4, N4 produces an output 1 at 18, representing a majority logic output. It is explained that the voltage drop across P3 being greater than that across either of N1, N2, causes the resistance of P3 to be greater than either of N1, N2 even when considered singly, thus improving the discrimination of a negative output as "0" and positive as "1". The input signals may be weighted either by reducing the channel impedances of a pair of F.E.T.'s in inverse proportion to the desired weighting (Fig. 2, not shown), or by connecting sets of pairs in parallel (Fig. 3, not shown).
Patent GB-1469113-A (GB)
Title: Electroslag refining
IPC: C22B9/10
Filed: 1973-10-23
Abstract: 1469113 Electroslag refining; continuous casting; composite casting; introducing metal into moulds BRITISH STEEL CORP 23 Oct 1974 [23 Oct 1973] 49296/73 Heading B3F [Also in Division F4] Molten metal, e.g. from an electrically-heated furnace or holding vessel 1, is conveyed up an electromagnetic launder 2 at a rate varied to control the rate of entry into a mould 3, to pass in small quantities through molten slag 8 for refining before solidifying, e.g. to form a continuous casting (which may be hollow if a stationary or moving mandrel is used) to be withdrawn by rollers 11, or to form a cast surface on a steel work-roll, Fig. 6 (not shown); there is some contact with the slag in the mould before the metal enters the mould. The bulk of metal in the launder 2 remains stationary and with controlled increases of voltage small quantities are conveyed into the bath of slag 8. The time interval between pulses determines the amount of refining which occurs in the inlet channel 7 through the mould wall. Metal on the surface of the stream 13 in the launder 2 passes down into the vessel I while metal beneath ascends. An electrode 12 in the slag 8 and connected to an A.C. or D.C. supply may be water cooled and of copper or graphite to maintain the slag temperature or it may be consumable and of the metal for casting. The metal may pass up into a chamber 15, Fig. 3, through an opening 16 for stirring with slag (electromagnetically and/or by nitrogen or argon passed through ports in the chamber walls) before passing into the mould 3. Electrodes 12 may depend into the chamber 15 to heat the contents and those of the mould. A zirconium boride/silicon carbide metering throat may be fitted into the mould inlet 7 to determine the flow rate. The chamber 15 may be annular and surround a mould 3 which has a number of inlets 7. The metal is held in the chamber 15 for a few seconds before the level is raised to determine the flow rate into the mould. The slag in the chamber 15 may be of different composition or electrical conductivity.
Patent GB-1133549-A (GB)
Title: Non-heat-shrinkable transparent polyamide film and its production
IPC: B29C55/02
Filed: 1967-10-31
Abstract: 1,133,549. Non-heatshrinkable transparent polyamide film. W. R. GRACE & CO. 31 Oct., 1967 [1 Nov., 1966]. No. 49505/67. Heading B5B. Non-heatshrinkable transparent polyamide film is produced from a synthetic, linear, transparent substantially amorphous polyamide derived from terephthalic and/or isophthalic acid and an alkyl-substituted hexamethylene diamine wherein the main hydrocarbon chain carries at least three side chain carbon atoms in the form of one or more alkyl groups by heating the polyamide to a temperature above its melting point but below that at which it will no longer form a coherent film, forming the heated polyamide into a film, and stretching the film at a temperature within the same range to form a film not more than 5 mils thick, e.g. 0À5 to 2 mils thick. The film may be stretched at a temperature above 220‹ C. and up to about 275‹ C. The polymer may be formed into a relatively thick film by such conventional methods as melt extrusion or calendering and the film thus formed may be stretched by hot bubble extrusion or by tentering. The hot polyamide film may be stretched uniaxially or biaxially. The polyamide used in the examples has been formed from terephthalic acid and a mixture of 2,2,4- and 2,4,4-trimethylhexamethylenediamine and melts over the range 190‹ to 220‹ C. In an example, the polyamide is formed into a tubular film by melt extrusion through the annular orifice of a die, the melt temperature of the polyamide in the extruder just before reaching the die being 274‹ C. The tubular film is inflated with air at 0À5 inch water gauge as soon as it leaves the die face and the stretched film taken up on a roller. The thickness of the resulting film is 1-2 mils.
Patent GB-1042960-A (GB)
Title: Improvements in apparatus for dispensing liquids
IPC: B67D1/14
Filed: 1963-12-16
Abstract: 1,042,960. Valves. CORNELIUS CO. Dec. 16, 1963 [May 20, 1963], No. 49604/63. Heading F2V. A valve mechanism for use in a liquid dispensing apparatus has a housing 11 traversed by a main passage 17 leading to a main outlet 18 and a main valve seat surrounding this passage and communicable with a supply of liquid, a manually movable main valve body 20 slidably disposed in the main passage and arranged to engage the main valve seat, a subsidiary passage 29 formed within the main valve body communicating with the supply of liquid and leading to a subsidiary outlet 57, and a subsidiary valve body 44 slidably disposed in the subsidiary passage and engageable with a subsidiary valve seat. The main valve 20 is actuated by a hand lever 15 against a spring load 56 while the subsidiary valve 44 is actuated by a press button 53 against a spring load 43 to permit subsidiary flow through passages containing changes in direction and cross-sectional area to induce frothing in the dispensed liquid.
Patent GB-1490455-A (GB)
Title: Sieves
IPC: B07B1/12
Filed: 1975-12-03
Abstract: 1490455 Bar screen KRAUSS-MAFFEI AG 3 Dec 1975 [19 Dec 1974] 49660/75 Heading B1D A screen comprises parallel bars 5 or 21 held demountably together by claw-like engagement with end members (6) or 23, the end members being wholly located below the upper surface of the screen and being shielded by lateral projections 10 or 25 which space the bars apart. Projections are provided at the ends of the bars on one or both sides. The upper faces of the bars may be chamferred at one or both ends 12 and may present convex or inverted-V cross-sections. The upper face may be formed by a section which is hardened or sintered to make it more wearresistant than the basic bar (Fig. 7 not shown) and worn bars may be reground. Fig. 1 (not shown) illustrates a centrifugal strainer drum lined with two axially abutting annular screens. the end members being formed as rings.
Patent GB-1192846-A (GB)
Title: Shock Absorber
IPC: F16F9/49
Filed: 1968-10-21
Abstract: 1,192,846. Springs. MONROE AUTO EQUIPMENT CO. 21 Oct., 1968 [2 Nov., 1967], No. 49793/68. Heading F2S.  A shock absorber has an auxiliary cylinder and an auxiliary piston. The auxiliary cylinder is located at the piston-rod end of the shock absorber's main cylinder; the auxiliary piston is slidably mounted on the piston-rod of the main piston and is provided with at least one axial slot through which the passage of fluid is prevented when the main piston forces the auxiliary piston into the auxiliary cylinder; and a projecting ring on the piston-rod is provided to engage the auxiliary piston. In an embodiment a shock absorber has telescoping tubes 5 and 6, the former having an end cap 7 with an attaching member 8 attached thereto and the latter being closed by a cap 12 connected to an attaching member 13. The cap 7 supports a piston-rod 9 which has a twoway valved piston 23 slidable in a cylinder 11. The latter forms an annular reservoir 10 with the tube 6; is connected to an auxiliary cylinder 72 which is also connected to a piston-rod guide 16; has a helical baffle 62 therein for eliminating turbulent flow; and is secured to a head 44 of a double-acting valve 43. The auxiliary cylinder 72 receives an auxiliary piston 65 when the latter is raised by the upward movement of the piston 23, the auxiliary piston 65 being slidably mounted on the pistonrod 9. Cushioning of the piston 23 is therefore effected by means of fluid flowing between the adjacent walls of the auxiliary cylinder 72 and the auxiliary piston 65. When the piston 9 moves downwardly the auxiliary piston 65 remains in the auxiliary cylinder 72 until a ring 67, which is mounted in an annular slot 68 in the piston-rod 9, engages a slot 70 formed in the auxiliary piston 65. Before the ring 67 engages the slot 70, however, a washer 32, which is positioned between the pistons 23, 65, is forced from engagement with the piston 65 by means of a shoulder 34 of the piston-rod 9 and fluid is allowed to pass, through passages 69 in the auxiliary-piston 65, to the auxiliary cylinder 72, thus releasing the auxiliary piston 65 therefrom. In embodiments, cushioning is effected when the auxiliary piston forces fluid from the auxiliary cylinder into ball valves located in passages formed in the piston-rod guide 16; when fluid passes through additional apertures formed in the auxiliary piston 65; and when fluid passes through triangular slots in the peripheral wall of the auxiliary piston 65.
Patent GB-1389960-A (GB)
Title: Oscillating anvil disintegrator
IPC: C13B5/04
Filed: 1973-10-26
Abstract: 1389960 Impact pulverizers; comminuting UNICE MACHINE CO 26 Oct 1973 [27 Oct 1972] 50054/73 Heading B2A An impact pulverizer comprises a rotor 2 in a casing 1 which includes blades 5 rigidly mounted and each comprising a stem portion and fixed beaters 8, a chute 12 on one side of the rotor and beneath the chute a serrated or undefused curved anvil or gate 13 which is yieldingly and adjustably biassed towards the rotor. The blades have sharpened leading edges 7. Material fed via a conveyor 6 is shredded thrown upwards of the chute 12 and comminuted by the beaters 8 as it descends. Tramp material deflects the anvil 13. Discharge is aided by a belt conveyor 20. As described the beaters 8 project laterally of the blades 5. The blades are secured, e.g. rivetted, in blade holders 4 which may e.g. have two blades each. Blade holders are disposed axially along the shaft 3. The anvil may comprise anvil bars spaced and parallel to the rotor axis. The conveyor 6 can operate in the direction of arrow 24 with mill casing 1 closed at 26. The shredding function is then disabled.
Patent GB-1270661-A (GB)
Title: Fire-fighting foams
Inventor: FIELDING HAROLD CROSBIE
IPC: A62D1/02
Filed: 1968-04-29
Abstract: 1,270,661. Fluorinated fire-fighting foams. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 April, 1969 [29 April, 1968; 7 May, 1968; 27 Sept., 1968; 25 Oct., 1968 (2)], Nos. 20214/ 68, 21613/68, 46013/68, 50786/68 and 50787/ 68. Heading A5A. A fire-fighting foam is produced by foaming an aqueous composition comprising a surfactant derived from a branched oligomer of tetrafluoroethylene (C 2 F 4 ) n  where n #4. The composition may include a lesser amount of a foam-improver, e.g. a protein or cellulose derivative, polyalkylene oxide or a synthetic non-fluoro surfactant. Alternatively the composition may contain a non-oligomer-based fluorinated foaming agent, or the fluoro-oligomer may act as a foam-improver to a greater amount of another conventional foaming agent, e.g. a protein or cellulose derivative, soap, or a synthetic sulphate or sulphonate. Some examples of the fluoro-oligomer surfactant are (i) C 9 HF 16 SO 3 H (or Na or K); (ii) C 9 HF 16 SO 2 NR<SP>1</SP>R<SP>2</SP>; (iii) C 6 F 13 CH 2 COOH (or Na or K); (iv) C 6 F 13 CH 2 COQ where Q is a hydrophilic group containing N<SP>+</SP> or (CH 2 CH 2  O) 1-20;  (v) C 2n F 4n-1 OC 6 H 4 -COR or -SO 2 R wherein n is 4, 5 or 6, and R is a hydrophilic group, e.g. the group O<SP>-</SP>M<SP>+</SP>, or a group containing N<SP>+</SP>; (vi) C 2n F 4n-1 OC 6 H 4 CH 2 N<SP>+</SP>(XYZ) Br- (or I-) where X, Y, Z are each ethyl or methyl; (vii) C 2n F 4n-1 R wherein n is 4, 5 or 6, and R is derived from a diamine or a glycol. The foams herein may also be used in conjunction with dry powder extinguishants, e.g. NaHCO 3 , KHCO 3 , KCI, K 2 SO 4 , ammonium phosphate, or the compositions of Specification 1,168,092.
Patent GB-1145680-A (GB)
Title: A roller bearing cage
IPC: F16C33/56
Filed: 1967-11-09
Abstract: 1,145,680. Bearings. DURKOPPWERKE G.m.b.H. 9 Nov., 1967 [7 Jan., 1967], No. 50969/67. Heading F2A. A roller bearing cage of synthetic plastics material has a guide-ring 1 with a number of separating bridge-pieces 2 axially extending therefrom, some of the bridge-pieces having a tongue-like projection 3 which forms a wedgeshaped recess 4 between said projection 3 and the respective bridge-piece 2. The projections 3 may increase in width in the direction of their free ends and may be provided on each bridgepiece 2. A roller bearing may be provided with one or more cages, in the latter case the cages are centred respectively by means of projections and recesses (not shown) which are formed alternately in the bridge-pieces 2.
Patent GB-1531466-A (GB)
Title: Control arrangement for controlling two slip-ring-rotor asynchronous motors
IPC: H02P5/747
Filed: 1975-12-16
Abstract: 1531466 Control of AC motors SIEMENS AG 16 Dec 1975 [20 Dec 1974] 51506/75 Heading H2J Two slip-ring-rotor three-phase asynchronous motors 1, 2, which may drive a common load (e.g. a pump or blower) through a shaft 5 or separate loads (e.g. the wheels of a vehicle) through respective shafts, are controlled by switches 3, 4 connecting the stator windings to an A.C. supply RST, rectifiers 7, 9 directly connected to the rotor windings, rectifiers 12, 13 connected thereto via the contacts of a switch 20, and thyristor inverters 10, 11 which complete a ring circuit with the rectifiers and have their A.C. sides connected to the supply RST via a transformer 18 and switch 19. The whole arrangement forms a reversible, subsynchronous, converter cascade whose operation, when used as a fan drive with a quadratic torque characteristic, is as follows:- (1) Over a starting range I of speed only one motor (e.g. motor 1) is connected to the supply switches 3, 19 being closed and switches 4, 20 open. Motor 2 idles and the rectified rotor voltage of motor 1 is distributed between inverters 10, 11. (2) Over a lower speed range II of normal operation switches 3, 4 and 19 are closed and switch 20 is open. Rectifiers 7, 9 add the rectified rotor voltages, which are distributed between inverters 10, 11, and the motors carry equal torques and rotor currents. (3) Over an upper speed range III of normal operation, switches 3, 4, 19 and 20 are closed and the motors operate with the parallel system 23, 24 shown in Fig. 2, including the hybrid rectifiers 7a, 7b, 7c, 13a, 13b, 13c and 7d, 7e, 7f, 13d, 13e, 13f. These rectifiers and the rectifiers 9, 12 respectively divide the rotor currents of motors 1, 2 which again carry equal torques and currents. Characteristics of D.C. volts at one of the inverters, load torque and overall permitted drive torque at the motor shafts are discussed for the three-speed ranges from zero to synchronous speed, Fig. 3 (not shown).
Patent GB-1449240-A (GB)
Title: Phase synchronization circuitry
IPC: H03L7/095
Filed: 1973-11-06
Abstract: 1449240 Phase detection FUJITSO Ltd 6 Nov 1973 [6 Nov 1972] 51541/73 Heading H3A A circuit for detecting phase synchronism between two signal comprises a phase comparator whose output is applied to a threshold circuit which exhibits hysterisis. The arrangement is used to indicate synchronism in an a.f.c. system.