baber/WOPTO huggingface dataset:
Patent GB-1055781-A (GB)
Abstract: 1,055,781. Pulse modulation circuits; gating circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. April 7, 1964 [April 8, 1963], No. 13921/63. Headings H3T and H4L. In a circuit for reducing the effect of spurious carrier and sideband frequencies in a P.A.M. modulator or demodulator in a time division multiplex system, a storage capacitor is arranged to form a clamp to retain the signal thereon substantially unaltered between sampling periods. Fig. 1 shows the receiving end of a P.A.M. system in which, between gating pulses A, when transistor VT 1 is non-conducting, transistors VT2 and VT3 also are non-conducting. Application of gating pulse A causes transistor VT1 to conduct and the leading edge of the signal pulse via capacitor C1 causes transistor VT3 to conduct for a short period and discharge capacitor C2. As the potential across R1 builds up transistor VT2 conducts and capacitor C2 is charged to a potential corresponding to the amplitude of the signal pulse. The potential across the capacitor C2 is supplied via high input impedance amplifier VT4, VT5 to the output terminal So. In a modification, Fig. 2 (not shown), transistor VT3 is gated by a separately generated pulse and capacitor C1 is omitted. In a further modification, Fig. 5 (not shown), to enable transistor VT1 to be replaced by one of the NPN type, the output from resistor R1 is coupled to transistor VT2 via a pulse transformer. In an arrangement for inclusion in the samping circuit at the input of the system, Fig. 3 (not shown), a current normally flows in the base-emitter circuit of transistor VT1 which is modulated by the audio signal supplied via transformer T. The resultant collector current charges capacitor C1 to a corresponding potential which is sampled in conventional manner by means not shown. Immediately after a sample has been taken C1 is discharged via transistor VT2 rendered conducting by pulse A. In a modification of Fig. 3, Fig. 4 (not shown), transistor VT2 is dispensed with and it is arranged that the whole of the charge on capacitor C1 is transferred to a storage capacitor C2 at the receiving end during a sampling period, which holds the charge between sampling periods until it is discharged by a transistor VT3. Other forms of storage device such as an inductor may be used.
Patent GB-1084169-A (GB)
IPC: B23K3/03
Abstract: 1,084,169. Soldering. WESTINGHOUSE ELECTRIC CORPORATION. March 24, 1965 [April 9, 1964], No. 12485/65. Heading B3R. The electrodes 10 of an electrical resistance soldering apparatus are made of a material having a specific electrical resistivity of less than 20 times that of copper, such as a 2% thoriated tungsten, and have blade-shaped tips 11 having thin workpiece-contactor edge surfaces for making a high resistance contact with, for example, a soldering post 15. The tip 11 of the electrode 10 is tapered in its thickness and the width of the blade is at least twice the average thickness. The ratio of the average cross-sectional area of the blade to the length of the blade is less than 1À25 mm. The ends of the tip 11 may have angled edges so that the two electrodes together form a V- shaped notch which straddles the soldering post 15, or the ends may have concave or V- notch, or edge pointed shapes. The electrodes may be mounted in a holder 16 in bores 19, 20 having convergent axes so that the tips 11 may be brought together, the electrodes also being rotatably adjustable so that the tips form an angled trough into which a solder wire may be fed. Fig. 8 (not shown) shows a hand grip apparatus, containing a solder wire spool, which includes a thumb-actuated device for feeding the solder through a tube on to the tips 11.
Patent GB-1227610-A (GB)
IPC: D07B7/14
Filed: 1968-11-13
Abstract: 1,227,610. Strap tensioners. PAUL HELLERMANN G.m.b.H. 13 Nov., 1968 [14 Nov., 1967], No. 53752/68. Heading F2G. In an appliance for binding cable assemblies (not shown) with a strap 3, which is fed from a reel 1 secured on a rotatable shaft 2 to which frictional braking is applied to create a degree of initial tension, which may be increased to a desired value by manually rotating the shaft, and including a device (not shown) for clamping overlapped ends of the strap while tension is being maintained at the desired value, the tension is prevented from exceeding a predetermined value by an arrangement consisting of a guiding abutment 6 over which the strap passes and which is adjustably mounted on a lever arm 7 of a two-armed lever the other arm 10 of which acts on a slide block 11 against the action of a spring 16 whereby, upon increasing the strap tension by manually rotating the shaft 2, the spring force is overcome by the component of the tension force acting on the lever with the result that a pawl 14, carried by the slide block, engages a ratchet-wheel 15 on the shaft 2 to prevent further rotation thereof when the predetermined tension is reached.
Patent GB-1227684-A (GB)
IPC: A01K63/06
Filed: 1969-03-03
Abstract: 1,227,684. Aquarium. STERNCO INDUSTRIES Inc. 3 March, 1969 [28 Oct., 1968], No. 11110/69. Heading A1A. [Also in Divisions H3 to H5] An aquarium water heater comprises an electric heating element 18 and a permanent magnet float operated magnetic reed contact unit 30 in series therewith housed in a perforated casing 13, 16 which permits water to contact the element 18 and physically protects the element 18 and contact unit 30. The element 18 is enclosed in a heat conducting tube 19 in one compartment at the lower part 13 of the casing and a series connected bimetallic switch 24, 25, 49, 50 and the float operated switch 30, 32 are mounted in an adjacent compartment of the lower part of the casing. The bimetallic switch regulates the water temperature provided the float switch is closed. The float switch comprises a sealed magnetic reed contact unit 30 actuated by a permanent magnet 34 carried in an axially movable tube 33 filled with buoyant foam 33a. The temperature setting of the thermostat is effected by an adjusting knob 41 at the top of the casing, rotation of the knob 41 causing the tip of a shaft 28 to bear on the cranked portion of contact arm 25 of bimetallic switch. Contact arm 24 forms the bimetal. An indicator lamp 53 in parallel with the heater circuit shows when both switches are closed. A bracket (not shown) enables the heater to be clamped to rims of various thickness. The heater may be mounted in the aquarium or in an attached filter tank.
Patent GB-1228486-A (GB)
IPC: A61M5/315
Filed: 1968-06-19
Abstract: 1,228,486. Injection syringe. B. T. KING (Glaswerke Schmiedefeld Veb.). 19 June, 1968, No. 29298/68. Heading A5R. An injection syringe for medical purposes comprises a cylinder and plunger mounted axially therein, with a sealing means provided on the plunger, wherein there is an annular recess in the side wall of the plunger which recess has a trapezoidal cross-section and has side walls inclined outwardly towards the side of the plunger, at least one resilient sealing ring being located under compression in the recess to abut against the inside surface of the cylinder. A suitable syringe is shown in Fig. 1, wherein a plunger 2 is provided with a recess 4 in which are positioned sealing rings 5 abutting against the inside surface of the cylinder 1.
Patent GB-1229033-A (GB)
IPC: H01Q21/20
Filed: 1968-07-18
Abstract: 1,229,033. Aerials. INTERNATIONAL STANDARD ELECTRIC CORP. 18 July, 1968 [21 July, 1967; 8 Aug., 1967], No. 34321/68. Heading H4A. An aerial array comprises three or more similar aerials of the frequency-independent type arranged with cylindrical and regular polygon symmetry with respect to an axis, or with spherical and regular polyhedron symmetry with respect to a point, the centre of the array, where their axes intersect, the radiations of the individual aerials being directed towards said centre, and means being provided for feeding each aerial independently of the others. An embodiment is shown in plan view in Fig. 3 which consists of three similar, vertically polarized log-periodic dipole aerials arranged symmetrically at angles # = 120 degrees with respect to the axis 0, their virtual apices being coincident with a point on the said axis. The aerials are driven at the terminals of their shortest dipoles, D MIN , and provide a substantially omnidirectional radiation diagram, Fig. 5 (not shown), when supplied with currents which are equal in amplitude and phase. If the phase of one current is reversed, the array becomes directive, Fig. 6 (not shown). The aerials may be supplied through an electronic steering arrangement, Fig. 12, in which a "joy-stick" control lever 10 simultaneously varies inductor-capacitor combinations (L 1 , C 1 ) (L 2 , C 2 ) (L 3 , C 3 ) connected to the respective aerials. Inductive reactances (X), Fig. 8 (not shown), may be inserted in the halves of the longer dipoles of the aerials to suppress resonances due to the fields of the other dipoles at high operating frequencies. Such inductors reduce the physical dimensions of the associated dipoles, and capacitive end loading may also be used, Fig. 9 (not shown). If circularly polarized radiation is required, each aerial may comprise a pair of log periodic dipole structures with the dipoles in the pairs disposed perpendicularly to each other and driven in phase quadrature. In other embodiments arrays comprise more than three aerials, and said aerials may be arranged in three dimensions about a centre. Thus, six aerials may be arranged respectively along the +x, -x, +y, -y, +z, -z axes of a rectangular co-ordinate system, all aerials pointing to the origin, Fig. 11 (not shown). An array may be constituted of frequency-independent type aerials other than log-periodic, e.g. of conical or equiangular spiral aerials, Fig. 10 (not shown).
Patent GB-1229277-A (GB)
IPC: D06F55/00
Filed: 1968-11-30
Abstract: 1,229,277. Clamps. H. E. HAZLEHURST. 28 Oct., 1969 [30 Nov., 1968], No. 56943/68. Heading E2B. The pivoted jaws 10, 11 of a spring-loaded clamp are held in selected gripping positions by a stirrup 24 which is pivoted at 28 on one jaw and has notches or serrations 33, 34, 35 engaging a pin 30 on the other.
Patent GB-1231927-A (GB)
IPC: H04L17/26
Filed: 1969-08-11
Abstract: 1,231,927. Selective printing. SIEMENS A.G. 11 Aug., 1969 [12 Aug., 1968], No. 40090/69. Heading B6F. Type-selection; letter spacing.-In a teleprinter in which the type is selected by the combined rotation and axial sliding of a type cylinder 6, Fig. 1, or type discs arranged side by side (15, Fig. 2), the letter spacing feed movement is superimposed upon the axial typeselecting movement by a mechanism which comprises a worm gear drive arranged in a cage 7, (23) upon a keyed or squared shaft 2, (4). The worm gear 8, (24), which is secured against axial displacement with respect to the cage 7, (23), is letter-spaced by a cable 5 attached to the cage. The worm gear 8, (24) is surrounded by a worm nut 9, (25) which with rotation of the worm gear by the shaft 2, (4), pivots a lever 11, (27) pivoted to the cage via an intermediate lever 10, (26). Thus the letter-spacing and axial type-setting movements are superimposed in the movement of the lever 11, (27), the free end of which is connected to type cylinder 6, Fig. 1, or the type-discs (15, Fig. 2). Type selectors of the embodiment described with reference to (Fig. 2) forms the subject matter of Specification 1,231,928.
Patent GB-1232234-A (GB)
IPC: F22B37/14
Filed: 1968-05-08
Abstract: 1,232,234. Vapour generators; tube walls. BABCOCK & WILCOX Ltd. 8 May, 1968, No. 21832/68. Headings F4A and F4B. A tube wall comprises a group of vertical tubes 1, forming one pass for the fluid, extending from header 2 to header 2<SP>1</SP> and a second group of tubes 3, forming a second pass for the fluid, extending from header (4), Fig. 2 (not shown), to header 4<SP>1</SP>, the tubes all being secured together and the number of the tubes 3 being less than those of the tubes 1. The tubes 1, 3, are of the same diameter and the fluid from header 21 flows through downcomers (5), Fig. 2, to header (4) and then through the tubes 3, the saturated steam from header 4<SP>1</SP> being conveyed to a superheater. The numbers of tubes 1, 3 are in the ratio 2 : 1. In Fig. 3 inclined tubes 7 have short vertical sections 7<SP>1</SP> connected to elbows 8 from which the fluid is delivered to a lower header (9), Fig. 4 (not shown), connected by pipes (10) to the tubes 11 of the first pass leading to upper header 9<SP>1</SP>. Downcomers (17) lead to header (13) connected by pipes (14) to the tubes 17 of the second pass, the numbers of the tubes 11, 17, being in the ratio 3 : 2. Elbows 611, Fig. 5, at the lower ends of tubes 11 and 17 carry webs 15 welded to the adjacent inclined tubes 7.
Patent GB-1232716-A (GB)
IPC: D02G1/16
Filed: 1969-07-07
Abstract: 1,232,716. Intertwining yarn. GLANZSTOFF A.G. 7 July, 1969 [24 July, l968], No. 34126/69. Heading D1F. A method of producing an intertwined yarn of predetermined opening length, i.e. distance between points of intertwining, comprises passing a yarn through a jet of medium directed substantially perpendicularly to the yarn and thereafter flowing freely away, and subjecting the yarn to fluctuations in tension. The frequency of the fluctuations is given by n=w/l where n= the number of cycles of fluctuations in tension per minute, w= the rate of travel of the yarn in metres per minute and /= the required average opening length in metres. In a preferred embodiment, the yarn 4 .is passed to the nozzle 9, supplying the jet of medium, via two guides 5 and 6. The fluctuations in tension are produced by means of a pin 8 mounted on a rotating disc 7. Alternative means for producing the fluctuations in the yarn tension comprise an electromagnetic yarn brake, or a vibrator of adjustable frequency. The initial pressure of the air used as the jet medium is 2.5 to 5 atmospheres, preferably 3.2 to 4.2 atmospheres. The yarn tension fluctuates between a lower value of 0.02 to 0.18 lbs./ denier and an upper value of 0.4 to 0.8 lbs/ denier. The lower value of yarn tension is preferably in the range 0.04 to 0.15 Ibs./denier and the upper value is preferably in the range 0.45 to 0.63 Ibs./denier. The average frequency of the fluctuations in yarn tension is from 2000 to 10,000 per minute, preferably 5000 to 8500 per minute. Air or steam may be used as the jet medium.
Patent GB-1234486-A (GB)
IPC: D06L3/12
Filed: 1969-07-17
Abstract: 1,234,486. Brightening textiles. FARBENFABRIKEN BAYER A.G. 17 July, 1969 [20 July, 1968], No. 36071/69. Heading D1P. [Also in Division C2] Textile materials, especially cotton and synthetic polyamides, treated with compounds I (including salts thereof) wherein m and n are 1, 2 or 3, are optically brightened. In particular, cotton textiles are suitable for simultaneous treatment with I and a high-quality finishing agent in an acidic bath.
Patent GB-1237938-A (GB)
IPC: B60G15/07
Filed: 1968-09-19
Abstract: 1,237.938. Vehicle suspension. NISSAN JIDOSHA K.K. 19 Sept., 1968 [28 Oct., 1967 (3)], No. 44660/68. Heading B7D. In a strut-type suspension comprising an hydraulic vibration damper 3 of the cylinder and piston type connected between the vehicle frame 6 and a wheel 1 a coil spring 10 is eccentrically disposed around the damper, and bears directly against the frame 6 at its upper end, and is supported at its lower end by a seat 11 rotatably mounted on a bracket 13 fixed to the lower end of the damper 3, the seat 11 having an arcuate aperture (111) through which the damper extends. The arcuate aperture allows relative rotation of the seat and the damper. The seat is rotatably mounted on the bracket 13 either by a pin 12 or a ball joint (5). The centre line of the spring may be curved in the rest condition (Fig. 36) and the upper end of the damper may be enclosed in a rubber bellows the upper end of which has inner and outer concentric rings 17 and 60, Fig. 7a, connected by radial elastic ribs 50, which bend when the cylinder of the damper rotates relative to the piston rod.
Patent GB-1252710-A (GB)
IPC: E01C19/20
Filed: 1970-09-22
Abstract: 1,252,710. Spreading granular material. ATKINSON'S OF CLITHEROE Ltd. 22 Sept., 1970, No. 45048/70. Addition to 993,463. Heading AID. Apparatus for spreading granular material as described in Parent Specification is modified in that the gear system comprises a hydraulic pump 46 adapted: to be driven from the vehicle propeller shaft 18 and; to drive a hydraulic motor 48, adapted in turn to drive the endless floor through reduction gearbox 39.
Patent GB-1252887-A (GB)
IPC: A47B87/02
Filed: 1967-12-29
Abstract: 1,252,887. Stackable trays. W. E. WILLSON Ltd. 6 March, 1969 [29 Dec., 1967], No. 59044/67. Heading B8P. [Also in Division A4] Stackable wire trays have on opposite side walls upper projections 22, 23 and lower apertures 19, 20, 21, so that the trays can be stacked with their bases horizontal (Fig. 2) by engaging projections 22, 23 of one tray in the apertures 20, 21 of the tray above, and also stacked with their bases sloping (Fig. 3) by engaging projections 22, 23 in the apertures 19, 20 of the tray above, so that the front of the upper tray does not overhang the front of the lower tray.
Patent GB-1257145-A (GB)
IPC: B65B53/06
Filed: 1970-07-27
Abstract: 1,257,145. Shrink covering. STERLING MACHINERY PTY. Ltd. 27 July, 1970 [6 Aug., 1969], No. 36208/70. Heading B8C. A method of shrink covering an article or stack of articles 13 comprises covering the article with a loose inverted, heat-shrinkable bag 23, at least partially evacuating the bag to form folds or pleats, and heating the bag to shrink it and weld together the layers of material constituting the folds. As shown, the stack of articles 13 is transported on a pallet 12 by a pair of endless conveyers 11 on to a perforated metal box 16. A suction fan 21 housed in a chamber 20 withdraws air from the bag through an exhaust port 19 in the box 16 thereby producing folds which are manually manipulated to coincide with the upper corners of the stack. A vertically movable hot gas duct 24 surrounds the stack so that hot gas produced by a burner 38 may be directed by duct nozzles 25 on to the bag 23 to produce shrinkage and welding of the fold layers. The duct and burner are carried on rollers 30 and are moved up and down on a vertical frame 28 by an electric motor 31 connected via a worm gear-box 32 to a cross-shaft 33 provided with sprockets 34 engaged with lifting chains 33 provided with counter-weights 37. A centrifugal blower 40 delivering heated gas into the duct 24 may draw make-up air into a plenum chamber 39 through an inlet 41 provided with a flow-rate damper 42. Adjustable, perforated duct plates 43 may be provided to control the gas flow to the nozzles 25. The latter may be partly blanked off with plugs or dampers so that an un-shrunk vertical band for preserving printed matter is left in the bag. A heat shrinkable sheet may be placed between the stack and pallet and welded to the bag 23. The vertical intermittent movement and length of travel of the duct and burner may be automatically controlled. An adjustable dwell is provided at predetermined points, a long dwell being provided at the top and bottom. The bag may be shrunk using radiant heaters, e.g. electric.
Patent GB-1264774-A (GB)
IPC: B31B3/44
Filed: 1970-08-19
Abstract: 1,264,774. Sulphamic acid fluorides. FARBENFABRIKEN BAYER A.G. 19 Aug., 1970 [26 Aug., 1969], No. 39906/70. Heading C2C. Sulphamic acid fluorides are prepared by reacting R<SP>1</SP>-N(R<SP>2</SP>)-SO 2 Cl, where R<SP>1</SP> is an aliphatic or cycloaliphatic radical optionally substituted by halogen, phenyl, nitrile or carboxylic ester and R<SP>3</SP> is H or as R<SP>1</SP>, or R<SP>1</SP> and R<SP>2</SP> and the nitrogen atom form a five- or sixmembered ring, with anhydrous hydrogen fluoride at 0-160 C. The invention further comprises compounds of the formula The new compounds are used as pesticides.
Patent GB-1265750-A (GB)
IPC: C02F1/10
Filed: 1969-05-30
Abstract: 1,265,750. Evaporators, flash type; desalination of water; recovery of salt. HYDRO CHEMICAL & MINERAL CORP. 30 May, 1969 [6 June, 1968; 2 May, 1969], No. 27453/69. Heading B1B. [Also in Division Cl]  Pure water and salts are separated from sea water (or other saline water) by mixing preheated sea water in mixer X-1 with hot immiscible liquid, such as a hydrocarbon oil, of lower vapour pressure, passing the mixture through conduit EP-1 to a series of evaporators E, disposed at increasing elevation, wherein flash evaporation of water and precipitation of salts (CaSO 4  and CaCO 3 ) take place, condensing the water-vapour in contact with cool oil in a series of condensers C, and passing the mixture from the last evaporator into separator S1-1 where residual saline water (i.e. brine), hydrocarbon oil, and salts are separated. The salts are removed through outlet 300-1, the oil passes to separator S3-1, and the brine is withdrawn through outlet 216-1 for flash evaporation and concentration in two further multi-stage units wherein more CaSO 4  and then. NaCI, MgSO 4  and KCl.MgCl 2 .6H 2 O are separated. Oil from separator S3-1 is passed through conduit CP-1 to a series of condensers C which are disposed at decreasing elevation. The mixture of pure water and oil leaving the lowermost condenser is raised by pump P2-1 to separator S2-1. The majority of the separated oil is passed through heater F1-1 and then fed to mixer X-1. The pure water (and some of the oil) is passed through heater F2-1 and then fed through conduit ep-1 to a series of flash evaporators e, disposed at increasing elevation, wherein flash vaporization occurs. The vapours are condensed in condensers c by contact with sea water supplied through conduit cp-1. The mixture of pure water and oil leaving the uppermost evaporator e flows to separator S3-1 from which product water is removed through outlet 218-1. The preheated sea water from the lowermost condenser c is supplied to mixer X-1. A halogenated biphenyl may be used as immiscible liquid.
Patent GB-1266347-A (GB)
IPC: C04B7/45
Filed: 1968-04-30
Abstract: 1,266,347. Furnaces for treating fluidizable materials. F.L. SMIDTH & CO. A.S. 24 March, 1969 [30 April, 1968], No. 20399/68. Heading F4B. Raw cement meal or nodules, after passing through cyclone or shaft suspension preheater 12, is introduced via line 26 and screw feeder 9 into fluidizing and combustion air duet 5 to be carried into fluidized bed reactor 1 to be calcined. The cement clinker produced is withdrawn through downpipe 11 and is carried by a regulatable branch stream of the fluidizing air from fan 6 through line 28 to a suspension air cooler 32 to be cooled by air from fan 37. After discharge from cooler 32 a fine fraction is separated, ready for use, the coarse fraction after crushing in crusher 45, being recycled by elevator 47 and conveyer 23, with fresh material from pipe 22, back into the preheater 12. Gaseous or pulverized fuel from line 3 is burnt in reactor 1 by the fluidizing air streams from fan 6, the combustion products passing up line 10 into the preheater 12. The warm air from cooler 32 is introduced into either the preheater 12 or the reactor 1 through lines 39 or 40 respectively. Cooled gases from preheater 12 pass through cyclone 14 and electrostatic precipitator 17 to the atmosphere. Lines 15 and 19 feed separated particles from the cyclone 14 and precipitator 17 back to the preheater 12 and reactor 1 respectively. Oversize clinker lumps from reactor 1 may be discharged past shut-off dampers 50 and 51. In a modification (Fig. 2, not shown) the preheater is mounted coaxially above the reactor, material from the bottom of the preheater passing to the top of the reactor in countercurrent to an ascending exhaust gas stream through a common duct between them.