baber/WOPTO huggingface dataset:
Patent GB-1420639-A (GB)
Title: Method and apparatus for forming loops in metal strip
IPC: B65H20/30
Filed: 1973-11-16
Abstract: 1420639 Corrugating NIPPON STEEL CORP 16 Nov 1973 [17 Nov 1972] 53287/73 Heading B3E Apparatus for forming loops of metal strip on a stock yard floor comprises a loop thrower 11 at the floor inlet and a plurality of pushers 33, 34, 35 for forming corrugations along the length of a loop. In Fig. 6, a first loop has been formed on the floor and the thrower 11 has formed a curve 31 initiating the formation of a second loop in the advancing strip. The pushers 33-35 have operated on the strip to make a clearance for the second loop to form, and to form corrugations 36, 37, 38, in the first loop so that it stands stably on the floor. As each loop is fully formed the pushers operate again to produce a clearance and corrugate the new loop. Fig. 9 shows a pusher comprising an arm 45 extensible by rack 51 and pinion 52 over idler 50. The pushing element 46 is movable between operative and inoperative positions by cylinder 48, and its operative face is shaped as shown, and preferably extends below the strip level so that a portion of strip which has fallen flat as at 54, is restored to upright position as at 55 by the pusher. In another embodiment, Fig. 11 (not shown), the pusher element 46 is vertically movable on arm 45. In a further embodiment, Fig. 13 (not shown), the arm is hung over the floor and retracts rather than extends to push the strip.
Patent GB-1524410-A (GB)
Title: Process for the stability of etherified acetal homopolymers
IPC: C08G2/36
Filed: 1976-12-23
Abstract: 1524410 Stabilization of polyacetals by heat treatment SOC ITALIANA RESINE SIR SpA 23 Dec 1976 [23 Dec 1975] 53737/76 Heading C3P The degradation of unstable chains in etherified homopolyacetals derived from formaldehyde, acetaldehyde, chloral, trioxan or tetraoxan, of molecular weight at least 10,000, is achieved by heating the polymer in the molten state at 130-240‹ C. A polar liquid such as water and/or organic hydroxy compound may be present mixed with the melt. The liquid may also contain a base. Suitable liquids are water, methanol, ethanol, n-propanol, isopropanol, t-butanol and benzyl alcohol. Suitable bases are alkali or alkaline earth metal hydroxides, salts of a strong base and a weak acid, ammonia, amines, amino-alcohols and amidines.
Patent GB-1212433-A (GB)
Title: A method of and apparatus for viewing incandescent bodies
Inventor: CLARKE REGINALD WILLIAM GEORGE
IPC: H04N5/33
Filed: 1968-11-13
Abstract: 1,212,433. Viewing with ultra-violet radiation. MULLARD Ltd. 13 Nov., 1968, No. 53873/68. Heading H4F. The Specification describes apparatus for forming an image of, or investigating the size of, an incandescent object 8 within a furnace 7 by means of illuminating said object with ultra. violet from a source 1, the ultra violet being directed on to said object by focusing lenses 4 and 5, via semi-silvered mirrors 3 and window 6 and the ultra-violet light reflected by the object being reflected by mirror 3 on to an image converter or television camera 9, via an ultra-violet filter 10. The converter or camera may be replaced by a bank of photo-cells and the optics 2, 3, 4, 5 and 6 are preferably silica. An ultraviolet filter may be placed between mirror 3 and lens 4.
Patent GB-1114740-A (GB)
Title: Improvements in or relating to stationery assemblies
IPC: B41L1/22
Filed: 1966-12-02
Abstract: 1,114,740. Manifolding stationery. LAMSON PARAGON Ltd. 2 Dec., 1966 [3 Dec., 1965], No.54092/66. Heading B6A. A stationery assembly comprises record sheets 1-6 interleaved by carbon sheets 7-11 of the same size as the record sheets, has the record sheets extending beyond the carbon sheets at the top and secured together by adhesive to form a stub 12, the carbon sheets extending beyond the record sheets at the bottom at 14. The carbon sheets are attached to the assembly as by punching or crimping a line of pin holes 15 across the assembly just below the stub 12. The record sheets can be perforated at 16 below the line of holes 15, so that they can be separated from the stub 12 when the carbon sheets have been removed. The carbon sheets are removed by gripping the stub 12 and the free ends 14 of the carbon sheets, and pulling in opposite directions.
Patent GB-1192428-A (GB)
Title: Process for the production of Chromium-Alloy Steels having a Low Carbon Content
IPC: C21C5/00
Filed: 1967-11-28
Abstract: 1,192,428. Producing Cr steels with low carbon contents. VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE A.G. Nov. 28, 1967 [Nov. 29, 1966], No. 54164/67. Heading C7D. Producing chromium alloy steels with a low carbon content, by refining liquid pig iron (e.g. steelmaking iron) in a top blown oxygen converter, with additions of scrap or alloy carriers containing non- oxidizeable alloying elements (e. g. Ni), to achieve a carbon content of at most 0À05% with an oxygen content of up to 0À06%, teeming the product into a ladle where it is vacuum decarburized while in rimming condition and then mixing the vacuum treated metal with liquid low carbon ferro chromium. During the oxygen blowing the P content is preferably reduced to no more than 0À015% and the S content to no more than 0À02%. Residual oxygen after the vacuum treatment may be removed by the addition of deoxidation agents and mixing of the final product may be enhanced by a short vacuum (e. g. vacuum suction) treatment.
Patent GB-1298415-A (GB)
Title: Improvements in or relating to hydraulic valves
Inventor: GIACOMINI ALBERTO
IPC: F16K11/00
Filed: 1970-11-13
Abstract: 1298415 Valves A GIACOMINI 13 Nov 1970 54198/70 Heading F2V A four-way radiator valve comprises an inlet 9 for hot water and an outlet 11 to the radiator pipe 4, an inlet chamber 21 receiving the circulated water from the radiator R, and a discharge outlet 24. A valve member 19a, 19b actuated by a handle 13 controls selectively the flow of water to the radiator and by-pass to the discharge outlet 24. A supplementary valve 22 controls the flow of water from the chamber 21 to the outlet 24.
Patent GB-1199769-A (GB)
Title: Processes for the Preparation of Equilenin and Homologues Thereof, and the Novel Intermediates Prepared Thereby
IPC: C07C45/71
Filed: 1967-11-29
Abstract: 1,199,769. 1,3,5(10),6,8 - Estrapentaenes. ROUSSEL-UCLAF. 29 Nov., 1967 [29 Nov., 1966], No. 54232/67. Headings C2C and C2U. Novel compounds of formula (wherein R and R<SP>1</SP> are each alkyl), which may be optically active or racemic, are prepared by cyclizing corresponding acids of formula The latter compounds are prepared from the corresponding racemic 1-alkyl-1-allyl-2-(6-alkoxy - 2 - naphthyl) - cyclopentan - 5 - one by oxidation to obtain a racemic product of Formula VI which may then be conventionally resolved into its enantiomers. In the example one such racemic acid is purified via its methyl ester, which latter is characterized as its 2,4- dinitrophenylhydrazone. Equilenin 3-alkyl ethers and the 13-alkyl homologues thereof, which may be optically active or racemic, are prepared by hydrogenolysis of compounds of Formula VII, and on dealkylation yield equilenin and the 13-alkyl homologues thereof.
Patent GB-1087900-A (GB)
Title: A process and apparatus for the heat treatment of yarn
IPC: D02J1/22
Filed: 1965-12-22
Abstract: 1,087,900. Heat-treating yarns. ALLIED CHEMICAL CORPORATION. Dec. 22, 1965 [Dec. 23, 1964], No. 54411/65. Heading B5B. Apparatus for heat-treating at controlled length a molecularly oriented, thermoplastic, heatshrinkable yarn 1, comprises a draw roll 5, a heater 10 having a substantially triangular cross - section, two of its sides respectively, 8 and 9, comprising a primary and a secondary outwardly arched heating surface, the third side being nearest the draw roll, a separator roll 7, an idler roll 6, and means 2 for feeding yarn to surface 8 and withdrawing it from draw roll 5 after it has been passed as a plurality of wraps about the heater and draw roll, the heating surfaces and one end portion of the draw roll being given matte low-friction surfaces, the arrangement being such that the common tangents between the guide roll and separator roll, and between the draw roll and separator roll, respectively intersect surfaces 9 and 8 to define arcs on these surfaces between 5 and 25 degrees, no edge of a heating surface being capable of deflecting a yarn wrap through more than 10 degrees, the idler roll and separator roll being each arranged to contact a yarn wrap through at least 10 degrees, and means for withdrawing the yarn under a tension of 0À05-0À25 gpd. at a speed of at least 1500 fpm. In operation, at least one full wrap of yarn contacts the draw roll on a polished surface thereof, and at least the last full wrap contacts it on its matte surface; the coefficient of friction between the yarn and the rolls 7 and 6 being not more than 0À1, and the frictional drag of the yarn over the heated surfaces not exceeding 0À1 gpd. Specified yarns are polyamides, linear polyesters and poly defines.
Patent GB-1283127-A (GB)
Title: Improvements relating to heat exchangers
IPC: F28D7/06
Filed: 1970-11-18
Abstract: 1283127 Air heaters DAIMLER-BENZ AG 18 Nov 1970 [21 Nov 1969] 54879/70 Heading F4S In an air heater comprising a bank 11 of U- tubes 22 connected to a cylindrical header 13 which is subdivided by a partition 17 into inlet and outlet spaces 18 and 20, a housing 12 Surrounding the tubes and header is fixed solely to the ends of the header, thereby permitting relative movement, due to thermal expansion, of the members constituting the air heater to take place without undue stress build up. Hot waste gases from a turbine enter the housing through inlet 27 and leave through outlet 28; air to be heated is passed through the tubes 22. A chamber 16 in which the direction of air flow is reversed is defined by part of the housing and a perforated plate 15 displaceably supported in a rail 14. U-section strips 30 seal the gap 29 between the housing and the header 13. Similar strips 34 are arranged in the chamber 16. A cylindrical elastic member 36 is interposed between the housing 12 and the inlet 19 of the header. A cover 37 closes the housing at the outlet 21 of the header. Screws 40 are used to secure the housing and cover to header flanges 38, 39. In an alternative embodiment (Fig. 4, not shown) two opposite banks (41, 42) of U tubes are connected to the single header (44). Instead of tubes, the passages through which the air to be heated flows may be formed by suitably curved and interconnected sheet-metal plates.
Patent GB-1260054-A (GB)
Title: Actuating moving-armature electromagnets
IPC: H01F7/18
Filed: 1969-11-10
Abstract: 1,260,054. Change-speed control. VOITH GETRIEBE K.G. 10 Nov., 1969 [8 Nov., 1968], No. 55005/69. Heading F2D. [Also in Division H3] In a circuit for energizing a moving armature electromagnet from a D.C. supply via a protective resistor which is initially short circuited, the short circuit being removed after a delay by " switch means," the said " switch means " includes a capacitor, a resistor in series therewith, and the base/emitter of a transistor, all in parallel with the winding of the electromagnet, the transistor controlling or effecting the short circuiting of the protective resistor. In Fig. 1 (not shown) energization of either of two electromagnets (1, 2) also initiates charging of a capacitor (C1 or C2) via a resistor (RC1) and the base-emitter of a transistor which thereby conducts to energize a relay (R1) having a contact which bridges a resistor (RV1) in series with the electromagnets. The relay drops out, reinserting the resistor, when the charging current drops below the threshold level of the transistor and this is arranged to occur after the electromagnet has pulled in. As shown, electromagnets 3 ... 6, which operate hydraulic valves in a vehicle gear-box, are supplied via a common resistor RV2; gear change is effected by change over switches 16, 17 and when one of these opens the circuit of an electromagnet the resulting increase in voltage on bus-bar S2 (due to a lower drop across RV2) charges capacitor C3 via R2 and T2, turning on transistors T2, T3 and hence T4 which bridges RV2 for the required time. C3 is discharged via a diode 23. In the case of electromagnets 3 and 4 an overlap is provided, 3 being held in by current through a resistor Ru (equal to RV2) after 16 has opened and RV2 bridged, until RV2 is re-inserted. In this case also this is further delayed by connecting a second capacitor Cu across C3. A further electromagnet 7 (for reverse) may be energized concurrently with any of the others and this has its own capacitor C4 which is charged when switch 18 is closed in the manner of Fig. 1.
Patent GB-1159669-A (GB)
Title: Circuit Arrangement to Supervise Telecommunication, Particularly Telephone Lines
IPC: H04M3/22
Filed: 1966-12-09
Abstract: 1,159,669. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 9 Dec., 1966 [16 Dec., 1965], No. 55218/66. Addition to 1,130,017. Heading H4K. The loop current detector in the line circuit claimed in Specification 1,130,017 is shunted by a capacitor to attenuate the asymmetrical alternating longitudinal voltages appearing on the line. The capacitor C1 used to shunt the detector AE may be the blocking capacitor C 1 of the line transformer OLU. The capacitor CA, shunting resistor R1 in one arm of the detector bridge circuit, together with capacitor C1, comprises a divider so that only a fraction of the alternating voltage on the line appears across the detector AE. If the capacitors are equal only half the voltage so appears. If C1 is larger than CA the fraction becomes smaller but the response time of the detector becomes proportionately slower. The detector may be a transistor, diode, or differential amplifier.
Patent GB-1489933-A (GB)
Title: Method of preparing polyimides
IPC: C08G73/10
Filed: 1974-12-21
Abstract: 1489933 Polyimides INST ELEMENTOORGANICHE SOEDINE AKAD NAUK SSSR 21 Dec 1974 55345/74 Heading C3R A process of preparing a polyimide comprises heating together at 100‹ to 220‹ C., in a polar organic solvent which is immiscible with water, equimolar amounts of a primary diamine and a dianhydride of a tetracarboxylic acid in the presence of an additional carboxylic acid having at least one COOH group which is not adjacent to another in an amount providing 0À25 to 10 COOH groups per unit of polyamide formed. The additional acid is stated to have a catalytic effect resulting in the one-step production of high M.W. polyimides of at least 99% cyclization at higher rates or lower temperatures which permit use of a wider range of solvents. In specific examples the following are used:- diamines 9,9-bis-(4<SP>1</SP>-aminophenyl)fluorene; 3,3- bis - (4<SP>1 </SP>- aminophenyl) phthalide; and 4,4<SP>1</SP>- diamino diphenyl ether; anhydrides of pyromellitic and 3,3<SP>1</SP>,4,4<SP>1</SP>-diphenyl-ether or-propane or benzophenone and 1,4,5,8-naphthalene tetracarboxylic acids; additional acids benzoic; ochloro-, m-fluoro-, p-ethyl- and 3,5-dinitrobenzoic, acetic, propionic, picolinic, stearic, adipic, iso-phthalic and trimellitic; solvents nitrobenzene, tetrachloro-ethane, benzonitrile and o-dichlorobenzene.
Patent GB-1384550-A (GB)
Title: Test probe apparatus for use in testing electrically conductive paths
IPC: G01R1/073
Filed: 1971-12-01
Abstract: 1384550 Test probes INTERNATIONAL COMPUTERS Ltd 28 Nov 1972 [1 Dec 1971] 55735/71 Heading H2E An apparatus for use in the electrical testing of conductive tracks, particularly of multi-layer printed circuit boards, has a fixed test head 19, from which project spring-loaded contact pins 23, each coupled by a conductor 26 to a connector 21. A carriage 11 on rails 13 brings the circuit under test, carried by base member 28, into location under the test head 19, and ram 14 of a pneumatic actuator 16 then forces the base member up to bring circuit elements 12 into contact with pins 23, guided by dowels 29 entering holes 27. A control box 15 sets the operating sequence, subject to interlock conditions, which may ensure that a programme of electrical tests has been completed before the base member is released, and it may control another pneumatic actuator for the traverse of carriage 11. Actuators may alternatively be of hydraulic or other kinds.
Patent GB-1462900-A (GB)
Title: Frame of a window having horizontally sliding wings
IPC: E06B1/70
Filed: 1974-12-30
Abstract: 1462900 Water drains YOSHIDA KOGYO KK 30 Dec 1974 [28 Dec 1973] 55985/74 Heading E1J A window sill 23 has two rails 21, 22 which bear horizontally sliding wings, the rails have grooves which are open towards each other, the water drain assembly 10 is shaped like a bottomless box and is divided into two parts 11 by a partition 12. Each side wall 14 has a water inlet 13 and the front 16 has outlets 15. The back 19 has two ears 18 and a leaf spring 20; the outlets 15 have a raised rim 17. The rim 17 and the ears 18 and spring 20 are slidably received in the grooves 24 and 26. In the normal position the rim 17 projects into the aperture 25 but for cleaning or mounting of the wings the assembly 10 may be slid along the grooves, so that the outlets 15 are out of register with the aperture 25.
Patent GB-1356720-A (GB)
Title: Carding machines
IPC: D01G15/46
Filed: 1972-12-06
Abstract: 1356720 Doffing comb systems K OTA 6 Dec 1972 56362/72 Heading D1N Lap 18 is stripped from a doffing cylinder 1 by combs 7, 8, 9, 10. Each comb is carried by a rotary member 3, 4, 5, 6 mounted in respective recesses in an elongate member 2. The members 3, 4, 5, 6 rotate oppositely to but at the same speed as member 2 which may be achieved by the first mentioned rotary members each having a gearwheel e.g. 16, 17 which orbits a fixed sun wheel 15 with the same number of teeth. Intermediate gearwheels e.g. 14, 15 mesh with the sun wheel and each rotary member gearwheel.
Patent GB-1417973-A (GB)
Title: Separation apparatus
IPC: B01D61/18
Filed: 1971-12-06
Abstract: 1417973 Ultrafiltration apparatus DE DANSKE SUKKERFABRIKKER AS 28 Nov 1972 [6 Dec 1971] 56637/71 Heading B1X An apparatus for separating a solution into a solute fraction (i.e. a concentrate) and a solvent fraction (i.e. a permeate), comprising a pressure vessel having inlet means for a solution to be treated and outlet means for a solute fraction of said solution, at least one semipermeable membrane provided within the vessel and secured to a membrane support, means for withdrawing a solvent fraction of the solution from the side of the membrane contacting the membrane support, and a hollow rotatable shaft mounted for rotation within the vessel and carrying the membrane support which consists of one or more circular discs extending substantially perpendicularly to the shaft, the interior of each disc communicating with the interior of the shaft. In the embodiment shown, three perforated hollow discs 8 are mounted on a hollow shaft 4 which rotates in a housing 1 divided into compartments, one for each disc, by walls 6. A semipermeable membrane encloses each disc and is attached to the shaft 4. Liquid to be treated enters at 2, a concentrate leaves at 3 and a solvent fraction passes through the membrane to the interior of the discs and leaves the apparatus via the hollow shaft. The shaft and discs are rotated by means not shown.
Patent GB-573744-A (GB)
Abstract: 573,744. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., and ARMSTRONG, L. J. HEATON-. Nov. 24, 1943, No. 19669. [Class 40 (v)] A radio receiver for use in a navigational system employing complementary (dot-dash modulated) signals, comprises a non-linear amplifier arranged to compress the amplitude ratio of the dot and dash signals to an optimum value, of about 95: 100, before applying them to a course-indicating device for aural or visual observation. The compression may be produced by an amplifier with a non-linear characteristic as shown in Fig. 3 which indicates two sets of input signals 11 and 12 with corresponding output signals O1 and 02, the larger amplitude signals having the dot-dash ratio compressed. A desired non-linear characteristic 12, Fig. 5, may be produced by the combination of the characteristics 10 and 11 of two valves 3 and 4 connected as shown in Fig. 4. The non- linear amplifier may be preceded by a signal channel with an A.V.C. system so arranged that the maximum signal fed to the non-linear amplifier is constant, or with a slow-acting A.V.C. system such that small amplitude input signals are fed to the non-linear amplifier in such magnitude that little compression occurs, while stronger signals, corresponding to shorter ranges, are sufficiently amplified to be applied to the more curved part of the non-linear characteristic with correspondingly increased. compression.
Patent GB-1220719-A (GB)
Title: Improvements relating to housings for adjustable resistors
Inventor: GABELL CHARLES ALEXANDER
IPC: H01C10/40
Filed: 1968-12-03
Abstract: 1,220,719. Voltage variable resistors. ITW Ltd. 2 Dec., 1969 [3 Dec., 1968], No. 57401/68. Headings H1K and H1S. The moving contact of a variable resistor is formed by one end 40 (Fig. 2) of a coil spring 37 (Fig. 1) compression or expansion of spring 37 being effected by movement of insulating nut 36 due to rotation of lead screw 32. The resistor element 22 may be carried in the lid 12 of the one-piece polypropylene housing 12, 13 and may be of voltage dependent material such as silicone ceramic. The resistor may provide the focus voltage of the C.R.T. of a T.V. set and the housing may be fixed to a panel by snap fasteners (44, Fig. 3, not shown).
Patent GB-1025394-A (GB)
Title: Improvements in apparatus for counting components by weight
Inventor: CHILTON JOHN MOORHOUSE
IPC: G01G19/64
Filed: 1961-10-20
Abstract: 1025394 Electric selective signalling systems W & T AVERY Ltd 18 Oct 1962 [20 Oct 1961] 37631/61 Headings G4D D7X D6Y D6C1 and D6C2  In a system for estimating the number of articles in a batch of articles by comparing the weight of the batch with the weight of a sample article, a first counter 5, 6 counts clockpulses and is reset each time its count equals the sample weight (via a comparator 3, 7 and an amplifier 9), a second counter 14, 15 counts the number of times that the first counter is reset to zero, a third counter 10, 11, 12, 13 which counts every pulse counted by the first counter, and a comparator 4, 8 which stops the counting processes when the count in the third counter equals (to within the tolerance range of the system) the batch weight. The counter 14, 15 then records the number of multiples of the sample weight which were necessary to equal the batch weight, which number will be an estimate of the number of articles in the batch.