baber/WOPTO huggingface dataset:
Patent GB-1504081-A (GB)
Title: Hair cutting and trimming device
IPC: B26B21/12
Filed: 1976-02-02
Abstract: 1504081 Hair trimmer J D KALLIKOUNIS 2 Feb 1976 [11 Feb 1975] 03988/76 Heading B4B A hair trimming device comprises a bodyportion 3 having a concave surface 4, a comb 31 having a number of tines 33 and selectably adjustable relative to the body portion and a cutting blade 51 secured to the body portion. The body portion, which may be of plastics material, is formed with lugs 14, 16 on which is secured a member 17 for supporting the blade 51, the latter being secured to the member by a resilient plate 61. The tines 33 of the comb are secured in a bar 32; the tines and bar may be of metal or plastics material. The bar is provided with resilient tab portions 41, 42 having serrated flanges 46 and adapted to engage with teeth 27 formed on the body portion; by depressing the tabs, the comb may be adjusted in the body portion. The tines may be formed notches (71), Fig. 11 (not shown), which serve to grip the hair. In a modification, the blade may be reciprocated by an electric motor (77), Fig. 18 (not shown).
Patent GB-249642-A (GB)
Title: An improved means for washing vehicles
IPC: B60S1/66
Filed: 1925-02-13
Abstract: 249,642. Hall, W. Feb. 13, 1925. Water-supply fittings for vehicles.-Means for distributing liquid over the surface of a road vehicle are permanently disposed around the body of the vehicle. As shown, perforated tubing 1, provided with one or more nozzles 2 to receive a hose, is affixed around the outline of the vehicle. One or more taps may be provided to cut off the supply of liquid from any desired part of the tubing.
Patent GB-1000229-A (GB)
Title: Radio signal receivers
IPC: C07D231/56
Filed: 1963-01-31
Abstract: 1,000,229. Stereophonic radio signal receivers. RADIO CORPORATION OF AMERICA. Jan. 31, 1963 [Feb. 16, 1962], No. 4109/63. Heading H4L. In a compatible stereophonic receiver, for use with the standard U.S. stereophonic transmission system, de-emphasis of the subcarrier sideband signals is effected before demodulation. The receiver comprises an antenna 6 feeding signals through R.F. amplifier 5 and IF amplifier 7 to FM detector 8. The output signals from detector 8 are (L+R), a 19 kc/s. pilot signal and subcarrier sidebands representative of (L - R) with a centre frequency of 38 kc/s. These signals are fed over an amplifier 23 to an amplifier tube 18. The anode circuit of tube 18 is tuned to the pilot signal and is transformer coupled to a full wave rectification frequency doubling circuit 39. The output of circuit 39 (at the sub-carrier frequency of 38 kc/s.) is applied to a tube 48 in a modified Colpitts oscillator circuit 47. During monophonic reception tube 48 is biased to cut-off but when the pilot signal is present (i.e. during stereophonic transmission which is indicated by a neon lamp 33), the change in bias of tube 48 enables it to oscillate at 38 kc/s. (in synchronism with the pilot signal) thereby to re-insert the sub-carrier. A switching voltage at 38 kc/s. from oscillator 47 is coupled by windings 51 and 58 to a balanced synchronous peak detector circuit 57 operative to derive (L - R) from the sub-carrier sidebands. Winding 58 is connected to diodes 59 and 60 so that they conduct during the same part of the input cycle and the time constants of the resistor-capacitor networks 61-62 and 64-65 are chosen so that the conduction angle of the diodes is small. The subcarrier sidebands are applied at the centre tap of winding 58- having been selected from the cathode of amplifier tube 18 by a combined filter and deemphasis network 66. This network comprises a series resistor 67, shunt inductor 68 and a trap circuit with inductor 69 and capacitor 70 which are series resonant at 67 kc/s. The inductor 68 resonates at 38 kc/s. and attenuates signals on either side of this frequency. The overall characteristics of the network are such that high frequencies of the resultant demodulated signals are attenuated at approximately a rate of 75 Á sec. to provide the necessary high frequency de-emphasis. Demodulated (L - R) signals are developed across the output capacitor 63 of circuit 57 and applied to the tube 74 connected as a phase splitter so that a pair of series connected resistors 79 and 80 are coupled to receive opposite phases of L - R). The (L+R) signal is applied to the junction of resistors 79 and 80 via series resistors 85 and 86 and shunt capacitors 87 and 88 which serve to select the (L + R) signal from the cathode of tube 18 and provide deemphasis. The resultant L and R signals appear at output terminals 16 and 17 respectively. Specification 1,000,228 is referred to.
Patent GB-290370-A (GB)
Title: Improvements in or relating to machines for operating on the soles of boots or shoes
IPC: A43D43/02
Filed: 1927-02-15
Abstract: 290,370. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). Feb. 15, 1927. Channelling; trimming.-Relates to machines of the kind described in Specification 13301/10 for rounding or rounding and channelling soles, and more particularly to the means for securing different variations of sole edge extension around the fore parts of shoes of different styles. The connections between the fore part guide and the rounding knife comprise members which move in unison and are relatively adjustable, e.g. an adjustable cam. The machine comprises a rounding knife 10, channelling knife 16, crease guide 12 and a normally retracted fore part guide 20 brought into action when desired by a treadle rod 24, all as described in Specification 4426/98. When the fore part guide is. in operation, its position is determined by a roll 42 on an arm 44 adjustable transversely so that the roll may engage any one of adjacent cams intermittently rotated by a friction clutch in opposite directions for right and left shoes, all as described in Specification 13301/10. The wooden cams described in this prior Specification, which are subject to rapid wear, are retained, but used only for unusual styles, -usual styles being provided for by an adjustable cam of light-weight metal, such as an aluminium alloy. The cam assembly is secured on an arbor 28, which can be removed by withdrawal of a centre 29 for quick replacement. The metal cam comprises a body 25 having an adjustable portion 50 pivoted to the body at 52, the free end of the pivoted portion engaging an eccentric slot 56 in a member 48 rotatable about the arbor and retained in adjusted position by a spring plunger 60 engaging one of a series of holes 62 in the bodv 25. Adjacent holes 62 vary the position of the fore part guide 1/64 inches, the setting being indicated by a scale on the edge of the member 48. The wooden cams are each carried by a collar 54, each collar carrying a key 85 engaging the member 25 or the collar on its right, the outermost collar being provided with a main key 88 so that the whole assembly rotates with the arbor 28.
Patent GB-699467-A (GB)
Title: Interference filter arrangement
IPC: G02B5/28
Filed: 1951-02-21
Abstract: 699,467. Colour filters. ZEISS-STIFTUNG, C.,[trading as JENAER GLASWERK SCHOTT & GEN]. Feb. 21, 1951 [Feb. 23, 1950], No. 4233/51. Class 97 (i). A filter arrangement for use at oblique incidence consists of two interference filters, each comprising superposed non-metallic layers of alternately high and low refractive index, separated by a bi-refringent layer having the direction of its bi-refringent action inclined at an acute angle to the plane of incidence of the light and which produces, for the angle of incidence chosen, a rotation of the plane of polarization of light passing through it. By such a system differences in the spectral composition of the reflected and transmitted beams due to differences in reflections of the components of the incident beam polarized in and perpendicular to the plane of incidence, may be avoided. Fig. 2 shows such a filter comprising a bi-refringent layer d of, e.g. gypsum, mica or stretched cellulose having on each side an interference filter comprising layers b of zinc sulphide separated by layers c of lithium fluoride, the whole being enclosed between prisms a and a<SP>1</SP>. A beam incident on one face of the prism a passes to the first filter system. Of the beam transmitted by this system the plane of polarization of the component polarized parallel to the plane of incidence is rotated through 90 degrees by the layer d so as to be polarized perpendicular to the plane of incidence when falling on the second filter. This component is reflected by the second filter, is again rotated through 90 degrees by the layer d to form the other component of the incident beam reflected by the first filter. The resulting reflected beam is therefore unpolarized, as is the transmitted beam.
Patent GB-1487437-A (GB)
Title: Noise shielding apparatuses
IPC: E01F8/00
Filed: 1975-01-31
Abstract: 1487437 Noise screen GAVELS ARKITEKTKONTOR AB 31 Jan 1975 [31 Jan 1974] 4279/75 Heading E1G A noise screen comprises a continuous surface fence 4 mounted on posts 1, the posts having a triangular elevation with the plane of the elevation normal to that of the fence. The screen is mounted alongside a road with the posts on the side of the screen adjacent the road. The posts are free-standing and closely spaced. An earth embankment 5 may be provided.
Patent GB-1287513-A (GB)
Title: Manufacture of polyamide moulded articles by the activated anionic polymerisation of lactams
IPC: B29C39/00
Filed: 1970-01-29
Abstract: 1287513 Moulding polyamide articles; coated moulds BADISCHE ANILIN- & SODAFABRIK AG 29 Jan 1970 [29 Jan 1969 28 Feb 1969] 4281/70 Heading B5A Polyamide articles are produced by the activated anionic polymerization of lactams in a mould made of a particulate moulding material treated with a binder wherein the surfaces of the mould which contact the polyamide are provided with a pore-free coating of a cured cross-linked composition. The coating is preferably one or more of acrylic resins, epoxy resins, silicone resins, etherified amino resins and may comprise up to 20 wt. per cent of alkyd resins based on ricinoleic acid, coconut acids or synthetic fatty acids. The mould is made by coating a former 2 resting on base-plate 1 with a layer 0À3-30 mm. thick of the cross-linkable resin 3 which is preferably in solution in an organic solvent. This layer is backed with a mixture of 85-99À7 wt. per cent of a blend of from 0 to 90 parts by volume of a non-heat resistant material having a large volume of cavities e.g. a foamed polymer and 100 to 10 parts by volume of inorganic solid or cavity containing materials e.g. sand. Between 15 and 0À3% of a curable binder is also incorporated in the inorganic material. The binder and resin layer are then cured and the mould is removed from the former. The mould may incorporate heating means, temperature measuring devices, metal powder grid or other fillers, or glass or other fibre reinforcement; many examples being given.
Patent GB-1496862-A (GB)
Title: System for monitoring an input signal to detect the occurrance of a peak level below a pre-set reference level
IPC: G01R19/04
Filed: 1976-02-04
Abstract: 1496862 Monitoring peak levels; detecting peak occurrences BURROUGHS CORP 4 Feb 1976 04301/76 Heading G1U [Also in Division H3]  In a system for detecting when any peak in an input signal consisting of a succession of peaks lies below a pre-set reference level, a short pulse is produced upon the occurrence of each peak by a peak level detector 4, Fig. 1, and used to set a latch 8 to a state determined by the result of comparing 6 the instantaneous signal voltage 2 with a pre-set reference level 8. Thus the latch 8 produces a constant 'zero' output while peaks above the pre-set level are received and produces a 'one' output whenever a peak lying below the pre-set level is received. The first 'one' output to be produced by the latch 8 resets a bi-stable 14, which was initially set 'on' at the beginning of the succession of peaks. The system also includes a monostable circuit 10 having a release time a little larger than the expected time between successive pulses to detect missing pulses. Peak occurrence detector A capacitor 48, Fig. 2, charges to the level of each peak as it occurs, and then discharges, via a resistor 46, until the next peak exceeds the level to which the capacitor has discharged. When this occurs - and it will occur just before the occurrence of the next peak - a transistor T1 is turned on producing a short negative pulse at its collector. Since this pulse occurs just before a peak, it is delayed 18 before being applied to the latch 8.
Patent GB-750838-A (GB)
Title: Improvements in or relating to eddy-current speed or rate indicators
IPC: G01P3/495
Filed: 1954-02-15
Abstract: 750,838. Speedometers. SOC. PER AZIONI FRATELLI BORLETTI. Feb. 15, 1954 [Oct. 17, 1953], No. 4440/54. Class 106(3). In an eddy-current speedometer the magnet is adjustable towards and away from the drag member to allow for calibration. In one example, Fig. 1, the magnet 5 is supported on a pivot 4 mounted in a sleeve 3 in a bore 1 of the body 2. The sleeve 3 has a circular groove 15 which receives an eccentric extension 14 of a member 13 rotation of which therefore effects axial movement of the sleeve 3 to determine the air gap between the magnet 5 and the drag disc 7. An adjustable screw fixes the sleeve 3 in the selected position. In another example, not shown, the sleeve 3 has a helical groove engaged by the inner end of a screw adjustable in the body 2. In a third example, not shown, a pin screwed to the sleeve extends through an inclined slot in the body 2.
Patent GB-915340-A (GB)
Title: Building components, fabrics and moulded articles of polyethylene-coated sand
Inventor: DOHM SVEND AAGE
IPC: C08K7/14
Filed: 1960-02-08
Abstract: A powdered moulding composition comprising sand coated with polyethylene is obtained by mixing sand with polyethylene in an amount not exceeding 16% by weight of the whole, followed by heating to form a dough which separates into coated particles on cooling. The polyethylene may be initially in the form of a solid, latex or solution.  Optional ingredients are glass fibre, asbestos and pigments such as red iron oxide.  The compositions may be formed into flower pots or into building components such as blocks, tiles, sheets or pipes, which may be impregnated with cement or reinforced with wires or rods.  Laminates may be obtained wherein outer layers according to the invention are bonded to inner layers of thermal or sound insulating material. Further the outer layers may be coated or impregnated with bitumen, paint or aluminium foil.  Examples I and II illustrate the manufacture of tiles which are coated with polyvinyl acetate sealer and coloured melamine lacquers.  Example IV illustrates the production of sheet or tiles by moulding a layer of polyethylene coated sand on to a sheet of polyester or polyester polyethylene laminate or woven fabric.  Example V describes a building block having a honeycomb pattern on one side and made up of two sheets of moulded polyethylene coated sand and an intermediate layer of vermiculite/cement.ALSO:A powdered moulding composition comprising sand coated with polyethylene is obtained by mixing sand with polyethylene in an amount not exceeding 16% by weight of the whole, followed by heating to form a dough which separates into coated particles on cooling.  The polyethylene may be initially in the form of a solid, latex or solution.  Optional ingredients are glass fibre, asbestos and pigments such as red iron oxide.  The compositions may be formed into flower pots or into building components such as blocks, tiles, sheets or pipes, which may be impregnated with cement or reinforced with wires or rods.  Laminates may be obtained wherein outer layers according to the invention are bonded to inner layers of thermal or sound insulating material. Further the outer layers may be coated or impregnated with bitumen, paint or aluminium foil.  Examples I and II illustrate the manufacture of tiles which are coated with polyvinyl acetate sealer and coloured melamine lacquers.  Example IV illustrates the production of sheet or tiles by moulding a layer of polyethylene coated sand on to a sheet of polyester or polyester polyethylene laminate or woven fabric.  Example V describes a building block having a honeycomb pattern on one side and made up of two sheets of moulded polyethylene coated sand and an intermediate layer of vermiculite/cement.
Patent GB-671152-A (GB)
Title: Internal combustion engine with a cooling and a scavenging or supercharging blower
IPC: F01P5/02
Filed: 1950-02-21
Abstract: 671,152. Pumps. KLOCKNER-HUMBOLDT-DEUTZ AKT.-GES. Feb. 21, 1950 [April 2, 1949], No. 4475/50. Class 7(ii) A supercharging or, as shown, scavenging air blower 2 is mounted at one end of a twostroke Diesel Vee-engine in front of or between the cylinder rows and is connected as by a sleeve coupling 20 to the rotor shaft 16 of a cooling air blower 15 similarly positioned at the remote end of the engine and driven off the crankshaft 3 by transmission gearing 4, multiplying gearing 10 between the shaft 16 and the blower rotor 11 being mounted in a blower housing 13 detachably secured to the engine frame 12 at a mounting position 16. The suction branch 17 of the blower 2 is independently, secured to the frame 12 at a mounting, position 18 which provides a sufficiently large aperture in the frame for the insertion of the housing 13. A friction clutch 21 is provided between the gearing 4 and the shaft 16. The cooling blower 1 draws air axially through a filter 8 into a chamber 9 connected to both cylinder rows, and the blower 2 supplies airto a chamber 19 connected to the scavenging channels.
Patent GB-466970-A (GB)
Title: Method of removing foreign substances from titanium dioxide
IPC: C01G23/047
Filed: 1936-02-14
Abstract: In the production of titanium dioxide substantially free from iron by hydrolysis of a titanium sulphate solution, the latter is slowly added to a solution containing a protective colloid and a salt of a metal which does not form an insoluble sulphate and has a higher atomic weight or valence than iron, the last named solution being maintained at a temperature of about 90 DEG  C.  A zinc or aluminium salt may be used.  Specification 456,544 is referred to.  The Specification as open to inspection under Sect. 91 comprises also the following subject-matter: salts of tin, antimony, titanium, thorium, germanium, and zirconium may be used in the process, or colloidal oxides of these metals.  The preparation of stannic hydroxide by adding a stannic salt to a hot solution of dextrin, and its peptization with hydrochloric or oxalic acid for use in the process is described.  In another method of conducting the process, a slurry of impure titanium dioxide is treated under heat and agitation with the salt in an amount of 1--10 per cent of the TiO2 present.  This subject-matter does not appear in the Specification as accepted.
Patent GB-764660-A (GB)
Title: Improvements in restrictor valves
IPC: F16K31/365
Filed: 1955-02-15
Abstract: 764,660. Fluid-pressure servomotor-control systems; valves. FOXBORO CO. Feb. 15, 1955 [Feb. 18, 1954], No. 4502/55. Addition to 740,238. Class 135. A valve according to the parent Specification is mounted in a casing 861 with the needle 385 coaxially disposed with respect to a bellows 378, and elastic fluid from a source 392 is applied directly through a passage 394 to the space on one side of the bellows (e.g. the inside) and, by way of a port 395, the tapered passage past the needle, and an opening 396, to the space on the other side of the bellows (e.g. the outside). The assembly may be incorporated in a fluid-pressure control system where, as a combined restrictor and capacity, it forms part of the means to give a derivative effect.
Patent GB-979415-A (GB)
Title: Voltage regulators
Inventor: MARSH GEORGE SYDNEY
IPC: H02J7/16
Filed: 1960-02-09
Abstract: 979,415. Automatic voltage control. C. A. V. Ltd. Feb. 7,1961 [Feb. 9, 1960], No. 4503/60. Heading G3R. In a voltage control arrangement for a generator having a field winding connected through a transistor, a voltage sensitive device co-operates with the first transistor and a second transistor, there being a feed back circuit between the transition, so that when the voltage sensitive device conducts at a predetermined voltage the first and second transistors oscillate between a first state in which the second transistor is conductive and the first transistor non-conductive and a second state which is the reverse of the first state. As shown, the output voltage of an alternator 1 is applied through a three-phase rectifier 6 across a voltage divider comprising resistor 17, 19, 20. At a predetermined live voltage a Zener diode 18 conducts to bias a transistor 13 conductive so that a current flows through a resistor 11 to bias a transistor 9, in series with a field winding 10 of the alternator, to cut-off. The reduction in the excitation of the alternator causes the output voltage to fall, and the transistor 9 is cyclically switched so as to maintain the alternator output voltage constant. Current limitation is effected by biasing the transistor 13 through a Lener diode 27 responsive to the rectified output from a current transformer 23. The alternator 1 supplies a battery load 5 through a three-phase rectifier 2 and the rectifier 6 can be dispersed with by connecting terminals 7, 8 to terminals 3, 4.