baber/WOPTO huggingface dataset:
Patent GB-1152423-A (GB)
Title: Improvements in or relating to Tape Speed Compensation Systems
Inventor: SKINGLE COLIN WILLIAM
IPC: H04N5/78
Filed: 1966-07-08
Abstract: 1,152,423. Tape speed compensation; local circuits. MINISTER OF TECHNOLOGY. 28 June, 1967 [8 July, 1966], No. 30742/66. Heading G5R. Variation in tape speed on playback of F.M. signals recorded in a channel on magnetic tape is compensated by generating in integrator means a ramp voltage for a time proportional to the period of reference signals read out from a compensation channel on the tape, the voltage being used to control the height or duration of pulses derived from the signal playback head. A plurality of signal channels on one tape may be compensated by a single compensation channel. The signals may be pulse-frequency modulated or sinusoidal. As shown, reference signals picked up by compensation head 1 are amplified and limited 2 to generate square-wave pulses of unity mark/space ratio at a. The frequency is halved in trigger 3, and the output b gates a at switch 4 so that alternate positive pulses are passed to flip-flop 7 and gates a constant voltage Ecm at switch 5. The output c of switch 5 is integrated in 6 (e.g. Miller circuit) to generate a ramp voltage e which is sampled and held in unit 9 whose timing is controlled by flip-flop 7, the integrator 6 being subsequently reset by flipflop 8. The sampled voltage Vcm is gated at 10 by the processed output from the signal head 15 so as to produce pulses of height Vcm at the signal playback frequency, Vcm being inversely proportional to the difference between the recording and playback speeds. The switch 10 output is combined in difference amplifier 11 with the voltage Ecm scaled by a factor G at 14, e.g. potentiometer, and the output h filtered 12 to give the compensated output O. Mathematical expressions are derived demonstrating that the output at O is independent of speed variation. Alternatively, the switch 10 may be omitted and Vcm applied directly to flip-flop 17 to vary the duration of the played-back signal pulses, the output from flip-flop 17 being applied to the difference amplifier.
Patent GB-470681-A (GB)
Title: Improvements in or relating to centrifugal governors
IPC: H01H35/10
Filed: 1936-11-11
Abstract: 470,681. Centrifugal switches. SIEMENS & HALSKE AKT.-GES. Nov. 11, 1936, No. 30779. Convention date, Nov. 11, 1935. [Class 38 (v)] [Also in Group XXVI] A centrifugal governor comprises a weight 5 which actuates a contact 6 for controlling the speed varying means. The weight 5 is loaded by a spring 8 adjusted so that at the desired speed the load exerted by the spring is equal to the centrifugal force of the weight in all positions of the weight. A pin 16 is arranged on the bell-crank 3 and projects through the disc 1 and engages a notch in a plate 21 loaded by a spring 22 and pivoted on a plate 18. The plate 18 is pivoted at 17 on the disc 1 and a weight 24 is also pivoted on the disc 1. At certain low speeds the plate 18 is free to move but when the weight 24 overcomes the spring 27 a surface on its arm 26 grips the plate 18. In this manner the abutment 19 for the pin 16 is adjusted so that despite wear of the contacts 6, 7, the clearance between them when they are opened is always maintained constant. An inertia weight 13 is arranged on the pin 4 and a pin 14 on the bell-crank 3 projects with clearance into the hole 15 in the weight 13. Specification 292,210, [Class 57], is referred to.
Patent GB-954735-A (GB)
Title: Propylamine derivatives
Filed: 1962-08-10
Abstract: The invention comprises compounds of formula: <FORM:0954735/C2/1> where R is an alkyl group, R1 is a hydrogen atom or a hydroxy-, alkoxy- or dialkylamino-group, R2 is a hydrogen atom or a hydroxy- or alkoxy-group, and A is a direct link, or ethylene group, or, when R is an ethyl group, a methylene group, acid addition salts thereof, and their preparation by (1) reaction of g , g -diphenylpropylamine with a ketone of formula: <FORM:0954735/C2/2> with simultaneous or subsequent reduction of the product, (2) reaction of b , b -diphenyl-propionaldehyde with an amine of formula: <FORM:0954735/C2/3> with simulataneous or subsequent reduction of the product, or (3) reaction of a compound of formula: <FORM:0954735/C2/4> where X is a halogen atom and R3 a hydrogen atom or a benzyl group, in the presence of an acid-binding agent, with diphenylmethane or diphenylacetonitrile, followed by removal of any benzyl and/or nitrile group by catalytic hydrogenalysis.  The above compounds have a coronary dilatant effect (see Division A5).ALSO:Compounds of formula <FORM:0954735/A5-A6/1> (see Division C2) where R is an alkyl group, R1 is a hydrogen atom, or a hydroxy, alkoxy or dialkylamino-group, R2 is a hydrogen atom or a hydroxy or alkoxy group, and A is a direct link, an ethylene group, or, when R is a methyl group, a methylene group, and acid addition salts thereof, have a coronary dilatant effect and may be used alone, in combination with other vaso-dilatants, narcotics, sedatives or hypotensives, e.g. reserpines, or in combination with a pharmaceutically acceptable carrier, e.g. in the form of tablets, dragees, capsules, powders, solutions or suspensions.  Typical salts are those with maleic, lactic, gluconic, citric, ascorbic and tartaric acids.
Patent GB-1080674-A (GB)
Title: Improvements in or relating to wallpaper removing devices
IPC: B44C7/02
Filed: 1965-07-20
Abstract: 1,080,674. Scrapers. SKARSTEN MANUFACTURING CO. Ltd., and A. R. SKARSTEN. July 18, 1966 [July 20, 1965], No. 30867/65. Heading B4B. A wallpaper removing device comprises a steel strip 11 one end portion 12 of which is bent and provided with teeth 14 to score a wallpaper surface and the other end portion 15 of which is provided with a stripping blade 16 chamfered on its upper edge. The strip is secured to a handle 10 by means of a screw 19 which has screw-threaded engagement with a boss 20, the strip being located in the direction of the handle by means of two holes in the strip which are engageable with a stud projecting from a metal plate 23, the arrangement being such that by rotating the boss 20 to slacken the screw 19, the strip can be rotated from the position shown to a position in which the teeth 14 are in the operative position. The teeth 14 are set at a pitch of three sixteenths of an inch.
Patent GB-1459542-A (GB)
Title: Bath panel
IPC: B01D1/30
Filed: 1974-07-12
Abstract: 1459542 Bath panels; towel rails OMEGA PLASTICS Ltd 22 May 1975 [12 July 1974] 31013/74 Headings A4N and A4U A moulded thermoplastics bath panel comprises a side wall I, an end-wall 9 and a towel rail 6  located in a recessed central portion 5 of the wall 1, the rail 6 being easily accessible to a person using the bath. Each wall is provided with longitudinally extending ribs adjacent its base, the ribs being spaced apart by approximately one inch so that the panel may be parted along the joins between ribs for adjustment. The panel is preferably of polystyrene and the rail may be a plastics rod or a rod or tube of anodized aluminium or chromium plated steel. The panel has flanges 2 which are rounded off at the corners 3, 4.
Patent GB-1240142-A (GB)
Title: A method of manufacturing tube billets
IPC: B21B19/14
Filed: 1968-06-28
Abstract: 1,240,142. Making tube billets; rolling; continuous casting. MANNESMANN A.G. 28 June, 1968 [28 June, 1967; 30 March, 1968; 5 April, 1968], No. 31036/68. Headings B3A, B3F and B3M. A tube billet for the production of seamless tubes is made by continuously casting a hollow ingot having an outer to inner diametral ratio between 5 :1 and 2:1 with a wall thickness of at least 150 mm. and an inner diameter of at least 80 mm., subdividing the continuous casting to produce ingots such that the resultant billet length will correspond to the input length of the tube production process and, after descaling, converting the cast structure of the ingot to a rolled structure by rolling without ovalization. The casting is cooled such that the segregation zone is spaced from the inner and outer walls of the casting by at least  of the wall thickness and is furthest from the wall at which the greatest rolling deformation will take place. The descaling may be by means of steam or pressurized water on the inner surface of the ingot or carried out during the rolling of the ingot. The rolling is preferably carried out in a three, or more, roll skew rolling mill.
Patent GB-1351503-A (GB)
Title: Preparation of omega-amino-alkane phosphonic and phosphinic acid derivatives
IPC: C07F9/30
Filed: 1971-07-02
Abstract: 1351503 #-Amino-alkane phosphonic (or phosphinic) acid derivatives BAYER AG 2 July 1971 [2 July 1970] 31040/71 Heading C2P #-Amino-alkane phosphonic acid derivatives or #-amino-alkane phosphinic acid derivatives are obtained by converting an #-cyano-alkane phosphonic or phosphinic acid derivative into a salt and hydrogenating the salt with the aid of a hydrogen carrier. Specified carriers are Raney nickel, cobalt or iron: or platinum metals in the presence of hydrogen at elevated pressure. Preferred derivatives have the formula where Y is H or a C 1 -C 5  alkyl, Z is a C 1 -C 5  aliphatic radical or a cycloaliphatic, araliphatic or aromatic hydrocarbon radical, the hydrocarbon radical being optionally linked to the phosphorus atom via oxygen, Me is metal or ammonium or substituted ammonium, X = 0 or 1. The derivatives may be converted into surface active substances by reacting with a C 8 -C 22  fatty acid chloride. Specific iso-cyano alkane phosphorous acid esters are obtained by reacting an appropriate phosphorous acid diester (Examples 1, 4 and 5 or methane phosphorous acid monomethyl ester (Ex. 3) with acrylonitrile (Exs. 1, 3 and 4) or α methacrylonitrile (Ex. 5). The diethyl ester of cyanomethane phosphoric acid is obtained by reacting triethyl phosphite with ClCH 2 CN at 150‹ C. Flame resistant substances may be obtained by reacting the amine-phosphorus compounds with epichlorohydrin.
Patent GB-535866-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J31/40
Filed: 1939-11-29
Abstract: 535,866. Cathode-ray tubes ; photo cells. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 29, 1939, No. 31101. Convention date, Nov. 30, 1938. [Class 39 (i)] In a cathode ray tube for generating television signals the mosaic screen consists of a wire mesh 12 coated with enamel 14 on one side only leaving square openings 13 ; photo sensitive discrete elements 15 are formed on this enamel. On the uninsulated side of the mesh a coating 17 is applied giving good secondary emission. The screen is scanned by a beam with high velocity electrons. An optical image focused on the elements 15 produces a charge image corresponding to the optical one. An anode 16 is placed on the side of the screen remote from the gun 5. The high velocity electrons generate secondaries on the coating 17, which are drawn through the openings 13 by the anode 16 under control of the charge image on the mosaic. The diameter of the scanning spot is equal to the width of the elementary line into which the picture is divided. The mosaic screen may be formed on a perforated metal sheet of nickel acid etched ; after cleaning the enamel may be projected thereon from below so that only one side is coated. The enamel may be applied in several thin coats, the foundation being fired after each coat. Quartz, cryolite or calcium fluoride may be deposited on the mesh 12 by evaporation. In a modification the electron gun and associated focusing and scanning means may be replaced by a photo-electric cathode scanned by a light-beam to generate scanning electrons for the mosaic, which electrons pass through the perforations. The Specification as open to inspection under Sect. 91 states that low velocity electrons may be projected from the gun, these passing through the perforations under control of the mosaic. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 510,696.
Patent GB-1022547-A (GB)
Title: Electromechanical door operator
IPC: E05F15/12
Filed: 1963-08-07
Abstract: 1,022,547. Door operating mechanisms. STANLEY WORKS. Aug. 7, 1963 [Aug. 8, 1962], No. 31121/63. Heading E2M. [Also in Division F2] A door actuator is provided with an overload release clutch 54 Figs. 2 having a rotatable inner hub 52 coupled to a shaft 22 for opening and closing the door and a rotatable ring member 56 positioned concentrically around the hub 52 and driven by a reversible electric motor via reduction gearing 50, 47, crank 46 and drive link 58. Two curved drive segments 60, 62 are pivotally mounted at 64, 66 on the ring 56 for movement towards and away from the hub 52, the segments being provided with a pair of dogs 70 normally engaging in diametrically opposed recesses 72 in the hub 52. The free ends of the drive segments 60, 62 are joined by a pair of toggle links 80, 82 which together with an adjustable compression spring 104, urge the segments inwardly to maintain the dogs 70 in the recesses 72. As the dogs 70 have their inclined faces 107 facing in opposite angular directions, the clutch 54 is bi-directional and torque is primarily transmitted through clutch segment 60 and its dog 70 to the hub 52 when the clutch is moving in a clockwise or door-opening direction and through clutch segment 62 and its dog 70 in the door-closing direction. When the torque transmitted, e.g. in a clockwise direction, exceeds a preselected amount determined by adjustment of the spring 104, the dog 70 of the clutch segment 60 begins to slide outwardly on wall 108 of the recess 72 against the action of the spring 104 acting through the toggle links 80, 82. At the same time the dog 70 of segment 62 will be cammed outwardly by the recess wall 76 of its mating recess until finally the clutch is disengaged. A pedestrian-responsive signal for energizing the electric motor 16, Fig. 1 (not shown) comprises a switch-type contact carpet or a photo-electric sensing system or a manually operated switch. Cam washers and a coil spring located between bearings for the door drive shaft 22 are arranged to increase the load on the motor to damp the movement of the door as it approaches its fully closed and open positions. Further damping is provided by an electric citcuit which places a resistor in parallel with the motor field. In addition a time delay circuit permits the door to "dwell" at the fully open position. The complete door actuating mechanism is mounted as a unit in a header above the doorway and the drive shaft 22 is coupled directly to the pivot shaft of the door. In an alternative arrangement, the actuator is mounted externally of the header and the door is driven through linkage 180, 182, Fig. 5 (not shown) connected respectively to the drive shaft 22 and to a safety arm pivoted at one end to the door normally retained for movement with the door by a latch.
Patent GB-736067-A (GB)
Title: Improvements in or relating to fitted screen frames
IPC: B07B1/48
Filed: 1953-11-10
Abstract: 736,067. Sifting apparatus. BUHLER, GEB. Nov. 10, 1953 [Nov. 18, 1952], No. 31129/53. Class 117. A screen frame 1 is provided with a groove to accommodate an elastic cord 3 for securing the screen fabric 2, and an elastic element 5 for resilient mounting of the frame in the sifter housing 4. Alternatively the element 5 may be a round rubber cord, Figs. 2, 3 (not shown), or the cords 3, 5 may be replaced by one element.
Patent GB-1279028-A (GB)
Title: Process for producing the antibiotic siccanin
IPC: C07G11/00
Filed: 1970-06-26
Abstract: 1279028 Producing the antibiotic siccanin SANKYO CO Ltd 26 June 1970 [3 July 1969] 31187/70 Heading C2A The antibiotic siccanin is produced by aerobically cultivating Helminthosporium siccans in a nutrient medium wherein the pH falls during cultivation to a value below the optimum pH for the growth of the micro-organism. The optimum pH for growth is 5À0 to 6À0, this being the preferred starting pH in the process; the final pH is preferably 2À5 to 3À0. The fall in pH may be effected by incremental addition of an acid (e.g. HCl, H 2 SO 4  or HNO 3 ) throughout the cultivation; or by including in the medium a nutrient source, such as an ammonium salt of one of the said acids, which liberates an acid upon its assimilation by the micro-organism. The siccanin is isolated by collecting the mycelium and extracting it with a hydrophilic solvent, e.g. acetone. Reducing the pH during cultivation is said to cause the siccanin to be retained in the mycelium rather than migrate into the culture broth. Two comparative examples are given wherein the micro-organism is grown in a conventional manner and the pH does not fall during cultivation.
Patent GB-603702-A (GB)
Title: Improvements connected with the mounting of objectives in photographic or cinematographic apparatus
IPC: G02B7/02
Filed: 1945-11-20
Abstract: 603,702. Interchangeable lens mountings. BROIDO, J. J., and WEISSBRODT, J. Nov. 20, 1945, No. 31247. Convention date, Dec. 6, 1944. [Classes 97 (i) and 98 (i)] A lens mount is held in position in a camera wall by two jaws on a spring-loaded bolt moving in a plane perpendicular to the optical axis of the lens, the jaws engaging two slots at diametrically opposite points on the rear portion of the mount, and having a wedging action to tighten the mount against the camera wall. As shown, the rear portion 2 of the mount fits into a wall of the camera body. The bolt 9, pivoted at 10 and urged by a spring 12, carries jaws 11 on each side of a semi-circular portion cut away to allow the passage of light emerging from the lens. The jaws 11 engage slots formed between the body of the mount and the projections 5, which projections have inclined faces on which the jaws 11 bear. The jaws 11 locate the mount in a definite orientation, which location may be assisted by supplementary means such as a mortise in the mount engaging a tenon in the wall. The orientation of the lens with respect to the mount may be adjusted and fixed by use of a ring 6 screwed on to the mount of the lens itself and held in the front part 1 of the interchangeable mount by three grub screws 8 engaging in the annular groove 7. The bolt may be modified to slide in guides or a bridge on the front wall under spring action.
Patent GB-985693-A (GB)
Title: Continuous strip of detachable sterile plastics containers
Inventor: BAXTER THOMAS RUSSELL
IPC: B31B27/00
Filed: 1963-08-08
Abstract: 985,693. Making bags. CONTINENTAL CAN CO. Inc. Aug. 8, 1963, No. 31307/63. Heading B5D. [Also in Division B8] Connected sterile containers are produced in the form of a flattened tube of heat sealable plastics material having transverse seals adjacent to each of which is a line of indentations providing easy severance of one container from the next, the material being sealed by the indenting means to maintain sterility. Plastics material is supplied to an extrusion head 20 from which it is fed through slots 23 in the form of a hot tube. Hot sterilizing air or gas is supplied into the tube as it is formed preventing it from collapsing before it is cooled by the chamber 24 as well as sterilizing its interior. The gas is preferably pumped through a filter 28 before passing over a heating coil 29. When the tube is cooled and set it is flattened and creased by rollers 26, 32 and passed between rollers 33 with elements 34 which seal the tube transversely. The tube is then passed through rolls 35 with projections 36 which produce the indentations 14. Specification 659,338 is referred to.
Patent GB-470494-A (GB)
Title: Improvements in and relating to hair washes
IPC: C11D1/00
Filed: 1935-11-12
Abstract: A shampooing preparation comprises a mixture of a fatty acid ester of a hydroxy-sulphonic acid or an acidyl derivative of an amino-sulphonic acid with a sulphuric acid ester of a fat or oil or of a fatty acid thereof.  The mixtures are used in aqueous solutions which are stated not to gelatinize.  Substances such as glycerin, alcohol, saponin, or camomile extract may also be added. According to examples preparations may consist of (1) oleic ester of isethionic acid, turkey red oil, glycerin and water, or (2) oleic acid derivative of taurine, sulphuric acid ester of hydroxystearic acid, glycerin, saponin, sugar and water.
Patent GB-1498243-A (GB)
Title: Screw presses
IPC: B30B9/12
Filed: 1975-07-26
Abstract: 1498243 Screw press SIMON-ROSEDOWNS Ltd 16 July 1976 [26 July 1975] 31350/75 Heading BID A twin-screw press for drying rye grass or lucerne has its helical flights overlapping and decreasing in pitch towards the discharge end (left), and the flights carry protuberances on their sides facing the discharge end which assist pressing by breaking up cell walls. The screws rotate in opposite directions within a cage, which may be of perforate sheet 14 reinforced by an external frame 15 or may comprise spaced axial bars. As shown the protuberences are formed by cutting notches 20 in the flights and bending the trailing edges (relative to screw rotation) towards the discharge end. Alternatively small parts may be welded to the flights or bolts screwed into tapped holes therein so that their heads protrude. Protuberences may be larger and more closely spaced nearer the inlet end of the press and may be provided along twothirds of the length of the screws.
Patent GB-690886-A (GB)
Title: Vehicle wind-screen wipers
IPC: B60S1/34
Filed: 1950-12-27
Abstract: 690,886. Securing wiper arms on shafts. LUCAS, Ltd., J. Dec. 21, 1951 [Dec. 27, 1950], No. 31363/50. Class 80 (ii). An angularly adjustable connection between the oscillatory arm b of a windscreen wiper and its actuating spindle g comprises the combination with a. hollow boss a, carrying the arm, of a knurled clamping piece c, secured by a screw h, carried by the boss, and adapted to interlock a, peripherally knurled part f formed on or secured to the spindle g.
Patent GB-1350352-A (GB)
Title: Differential amplifiers
IPC: H03F1/30
Filed: 1972-07-05
Abstract: 1350352 Transistor amplifying circuits NATIONAL SEMICONDUCTOR CORP 5 July 1972 [8 July 1971] 31397/72 Heading H3T A differential amplifier uses two transistors each having two emitters; the first emitters of the two transistors are connected together, while the second emitters are connected to either end of a potentiometer, the slider of which is connected to the first emitters. Inputs from terminals 22, 24, Fig. 1, are applied to the bases of transistors T 1 , T 2 , respectively, collector load resistors R 1 , R 2  respectively, providing an output at terminals 26, 28. The first emitters e 1 a, e 2 a are connected together and via a current source 12 to a potential V-; they are also connected to the slider of a potentiometer 16, the ends of which are connected to the emitters e 1 b, e 2 b. The potentiometer 16 serves to balance the arrangement. In a second embodiment, transistors T 1 , T 2 , Fig. 3, are driven by signals at terminals 44, 46 respectively, and have as common emitter impedance a current source 30. The collector load resistors R 1 , R 2  respectively are connected in series with diodes comprising transistors T 3 , T 4  each of which has its base connected to its collector. The emitters e 3 a, e 4 a, are connected together, to a source of potential V<SP>+</SP> to which is also connected the slider of potentiometer-38, the ends of which are connected to the emitters e 3 b, e 4 b. In a further embodiment (Fig. 4, not shown) the resistors R 1 , R 2  of Fig. 2 are omitted, the base of transistor T 4  is connected to the collector of transistor T 3  instead of its own collector, and the output is taken from the collector of transistor T 2  only.