baber/WOPTO huggingface dataset:
Patent GB-1459231-A (GB)
Title: Semiconductor devices
IPC: H01L29/47
Filed: 1973-06-26
Abstract: 1459231 Schottky barriers MULLARD Ltd 28 March 1974 [26 June 1973] 30179/73 Heading H1K In a semiconductor device in which a Schottky barrier is formed between a semiconductor body and a metal electrode provided thereon, a shallow surface layer having a higher doping concentration than the bulk of the body is formed in the body over at least part of the body region overlain by the electrode. The layer dopant is not derived from the electrode, and the depth of the layer is such that, in the zero bias condition, the layer is substantially depleted of charge carriers, with the result that the reverse I/V characteristic of the device is determined by the doping level of the body bulk independently of the layer. The effective height of the Schottky barrier is lowered when the layer is of the same conductivity type as the body bulk, and is raised when the conductivity types are mutually opposite. As shown, a shallow N<SP>+</SP> layer 14 is formed in an N-type epitaxial Si layer 10 at the region thereof at which a Schottky electrode 15 of Ni is subsequently formed by evaporation and etching. Layer 14 is produced by implantation, through a window in a SiO 2  layer 12, of Sb ions, and is at most 150 thick. Alternatively, a layer of Sb (16, Fig. 3, not shown) is deposited over the masked epitaxial layer 10 and bombarded with Krypton ions to effect recoil Sb implantation in layer 14. In either case, the ion bombardment is preceded by a cleansing etch in HF and an alcohol wash, and followed by an annealing step (which in the alternative embodiment causes the remainder of the Sb layer to volatilize), and further cleaning and washing. Fig. 5 (not shown) depicts an Sb-implanted layer 14 in a P-type epitaxial layer; and Fig. 9 (not shown) further illustrates the layer 14 as being formed around the periphery only of the Schottky barrier region. A1 Schottky barriers to P-type Si, in which In ions are implanted to form the shallow surface layer, and the use of GaAs instead of Si, are mentioned.
Patent GB-1061110-A (GB)
Title: Compressor drive for tractor
Inventor: GREEN GEOFFREY ALAN
IPC: B60K25/00
Filed: 1965-07-16
Abstract: 1,061,110. Tractor power take-off arrangements. R. PRATT Ltd. Jan. 25, 1966 [July 16, 1965], No. 30298/65. Heading B7H. A compressor 29 is supported by a cradle 30/32 mounted at the rear of a tractor and is driven through a shaft 28, with universal joints at each end, and a shaft 12, 23 which extends through the rear axle casing 11 and replaces the normal drive-shaft connecting the gear-box or automatic transmission and rear axle and/or power take-off drive. In the embodiment a power-take-off is driven from shaft 12 through gear pair 15, 16.
Patent GB-1385147-A (GB)
Title: Nickel-tantalum base alloy
IPC: C22C49/08
Filed: 1973-06-26
Abstract: 1385147 Ni-Ta Base Alloy EUROPEAN ATOMIC ENERGY COMMUNITY 26 June 1973 [28 June 1972] 30315/73 Heading C7A Alloy of composition:- with not more than 1% impurities at least part of the Ta and Ni being in the form of fibres and lamellae consisting mainly of the intermediate compound Ni3Ta dispersed in the composition. The fibres or lamellae may have the same orientation and may contain small quantities of copper, chromium and manganese. The alloy may be produced by infiltrating prefabricated fibres of Ni 3 Ta with molten nickel, cold pressing the fibres with nickel powder and sintering, co-extruding the fibres with nickel or by cooling the molten alloy so as to produce directional solidification
Patent GB-617655-A (GB)
Title: Fishing reels
IPC: A01K89/015
Filed: 1946-10-11
Abstract: 617,655. Fishing. NORBURY, E. Oct. 11, 1946, No. 30355. [Class 48] [Also in Group XXXIV] A fishing reel comprises a spool 9 fast with a spindle 13 rotatable in the reel frame 10 and having a groove 30 at its free end engaged by either or both of two leaf springs 28, 29 fixed in a casing 34 frictionally pivoted on the outside of the frame at 35. Pivotal movement of the casing in one direction increases the pressure of the spring 29 in the groove and movement in the other direction causes a spring pawl 24, carried by the casing, to engage with a ratchet wheel 25 which is fast on the spindle. The leaf springs are controlled by pins 32, 33 respectively fixed, to the frame and the casing. The spindle and ratchet wheel are connected by a pin 27 on the former engaging one of a number of slots 26 in the latter.
Patent GB-943459-A (GB)
Title: A dust-arrester installation having parallel filter pockets arranged in the chambers thereof
IPC: B01D46/04
Filed: 1962-08-08
Abstract: 943,459. Air filters. H. LUHR. Aug. 8, 1962, No. 30376/62. Heading BIT. Each of a plurality of inward flow flat rectangular air filter units in parallel comprises a frame 4, Fig. 2, over which is stretched sheet filter medium 5 so as to cover all but one narrow vertical side 3 of the frame 4 which has a filtered air exhaust slot 2a in register with a slot 2 in a vertical supporting wall 1 and the edge of the filter material adjacent the outlet 2a is beaded at 5a and is clamped against the wall by a U-section vertical rail located between adjacent units and having vertical slots 9 -bearing on cam surfaces 8, Fig. 1, of hooks 7 secured to the wall 1.
Patent GB-965682-A (GB)
Title: Amplifying arrangements employing resonant transmission lines
Inventor: TEACHER VICTOR
IPC: H03H7/42
Filed: 1960-09-05
Abstract: 965,682. Valve frequency-selective amplifying circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug. 15, 1961 [Sept. 5, 1960], No. 30499/60. Heading H3W. In a variably tuned amplifier, comprising a grounded-grid stage 3 operating into a transmission line 1, 2, the far end of which is connected to a tuning capacitor 4, an output is taken from two points Y, Z on one side of the line spaced on either side of a point X which is a voltage node at the mid-frequency of the tuning range. The points Y, Z are so chosen that the voltage between them does not substantially vary over the tuning range, and they are connected to a load 7 by means of a " balun " 8. This may, as shown, comprise a bifilar wound choke, or alternatively a length of balanced line located within a quarter-wavelength trough which is earthed. Variation of bandwidth over the tuning range may be prevented by means of a resistor 9 connected across the line at the point X. Specifications 909,019 and 965,683 are referred to.
Patent GB-873927-A (GB)
Title: Method of combating nematodes
Filed: 1959-09-07
Abstract: A nematocidal composition comprises a mixture of 10 to 60% by weight of one or more 1 : 4-dichlorobutenes and 10 to 90% by weight of one or more chlorinated hydrocarbons containing 3 or 4 carbon atoms. Specified chlorinated hydrocarbons include 2,3-dichloropropene, 1,2-dichloropropane, 1,2-dichloropropene-(1), 1,1,2,3,3 - pentachloropropane, 1,2 - dichlorobutane, 2,3 - dichlorobutane, 2,4 - dichlorobutene-(2), 3,4-dichlorobutene-(1), 1,2,3-trichlorobutane or 2,2,3-trichlorobutane, or the crude chlorinated mixture from the chlorination of butadiene.
Patent GB-383050-A (GB)
Title: Improvements in or relating to joints for connecting together overlapped portions ofmetallic strapping
IPC: B65D63/04
Filed: 1931-11-04
Abstract: 383,050. Bale-tie fastenings. ABBOTT, G. J., 7, Princes Street, Westminster. Nov. 4, 1931, No. 30541. [Class 94 (i).] The overlapping ends A, B of bale ties are secured by striking up curled tongues A<1>, B<1> from the edges, opposite each other, or in staggered formation. The tongues may be rectangular, or may be wider at the free end than at the base.
Patent GB-1056346-A (GB)
Title: Catalyst reactivation in process for improving lubricating oil and waxes
IPC: B01J23/28
Filed: 1963-08-01
Abstract: A process for improving colour charateristics of unfinished mineral hydrocarbon lubricating oil fractions or petroleum hydrocarbon wax fraction comprises contacting the charge stock in the presence of hydrogen in a reactor with a molybdenum oxide on alumina catalyst having an average pore diameter of 110 <\>rA to 600 <\>rA, wherein hydrogen sulphide or a hydrogen sulphide-producing material, for example carbon disulphide or methyl sulphite is introduced into the reactor when the catalyst loses its activity. Preferred operating conditions are 200-10,000 SCFH2/BbL; 100-3000 p.s.i.g.; LHSV 0.1-15; 250-700 DEG  F.
Patent GB-1028840-A (GB)
Title: Improvements in or relating to the purification of a plasma
Inventor: VERON DIDIER
IPC: H05H1/02
Filed: 1964-08-04
Abstract: 1,028,840. Molecular beams. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 4, 1964 [July 19, 1963], No. 30601/64. Heading G6P. A beam formed of a mixture of charged particles and electrically neutral molecules is passed through a magnetic field structure which effects separation of the neutral molecules from the charged particles. The beam is contained in a stainless steel tube having a longitudinal " S "-shaped axis. Coaxial solenoids produce a magnetic field along the tube axis. The charged particles follow the internal path of the tube by reason of the action of the field on the moving charges. The neutral particles proceed undeflected along a linear path and are collected at a branch tube at the first bend.
Patent GB-324355-A (GB)
Title: Improvements in electric switches for electrically driven household machines
IPC: H01H3/50
Filed: 1928-10-23
Abstract: 324,355. Electrolux, Ltd., (Inventia Patent-Verwertungs-Ges.). Oct. 23, 1928. Floors, cleaning.-A switch e mounted in the handle of an electrically-driven floor-treating machine is retained closed against the action of a spring n by a no-volt coil o. The switch is operated manually by a bar m.
Patent GB-391832-A (GB)
Title: Improvements in rotary fluid meters
IPC: G01F3/28
Filed: 1931-11-05
Abstract: 391,832. Rotary meters. BARON, H., 231, Strand, London.-(Siemens & Halske Akt.-Ges. ; Siemensstadt, Berlin.) Nov. 5, 1931, No. 30697. [Class 110 (ii).] A rotary meter which is fed by fluid through an inlet a has a distributing chamber k with an inlet area h and a discharge area g such that in tuning through an angle subtended by the lines l, n, which intersect through the lip i, the areas h, g are approximately the same so that the quantity of fluid contained in the chamber k is approximately constant while the meter turns through the same angle. The fluid contained in the area h, Fig. 1, is transferred to the area g, Fig. 2, before discharge takes place over the lip of area g to the outlet e. The meter may be used for gas or steam, but for gases the meter operates in the inverted position.
Patent GB-1188003-A (GB)
Title: Improvements in or relating to Aerosol Dispensers.
Inventor: GATLAND LAWRENCE OSWALD
IPC: A61M15/00
Filed: 1967-07-04
Abstract: 1,188,003. Dispensing liquids under gaseous pressure. STERWIN A. G. July 3, 1968 [July 4, 1967], No.30706/67. Heading F1R. An actuator assembly for an aerosol dispensing container, e.g. for inhalant, comprises a squeezable housing 11a, 11b receiving the container 1, and an actuator head 8 having a nozzle 6 engaging the container valve stem 3, and having cams 10a, 10b engaged by followers 14a, 14b in the housing, so that squeezing of the housing produces downward movement of head 8 to open the container valve. In the embodiment shown, the housing comprises hinged segments 11a, 11b with overlapping portions 13a, 13b for concealing the container. A protective cap 16 has projections 17 to prevent accidental squeezing of the housing. Air inlet apertures 9 are provided in head 8. In Figs. 5 and 6, (not shown) the housing is made in one piece, e.g. of polypropylene, with two relatively thick segment portions joined at the sides and base by thin membranes which readily fold up when the housing is squeezed. The container valve may be of the type producing a metered quantity. The housing may be translucent or opaque.
Patent GB-1177010-A (GB)
Title: A Frequency Synthesiser having at least One Preset Frequency
IPC: H03L7/20
Filed: 1967-07-04
Abstract: 1,177,010. Automatic phase control systems. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 4 July, 1967 [26 July, 1966], No. 30759/67. Heading H3A. A variable frequency oscillator 30 is stabilized at a selected harmonic of a stable generator 10 by means of an auxiliary oscillator 58. Initially, the oscillator 30 is controlled by a sweep generator 61 until its frequency is near that of oscillator 58 when an output from mixer 51 passes to a logic circuit L which changes over the switch unit K so that oscillator 30 is controlled by the output of a phase discriminator 40 supplied with inputs from a mixer 20 and direct from harmonic generator 10. If the frequency is to be changed, the crystal 59 of oscillator 58 is removed, and a detector in the logic unit L detects the absence of oscillations and restores the switch unit K to its second position. In practice the switch unit K is a bistable circuit (56, Fig. 2, not shown) controlling the bias across a diode which short-circuits the output of the phase discriminator. When the diode is reverse-biased, the output of the discriminator is fed to a varactor diode in the oscillator 30 and also reduces the power supply to a multivibrator (61) forming the sweep generator so that it does not oscillate. The logic circuit L may comprise an AND gate (54) fed from mixer 51 and also from a monostable (53) triggered by the output of a band-pass filter (52) supplied from the main mixer 20.
Patent GB-377523-A (GB)
Title: Improvements in or relating to wood screws, more particularly screws for railway sleepers
IPC: D02G3/08
Filed: 1931-11-06
Abstract: 377,523. Wood-screws. MUHLIG, L., 2, U1. Inwalidzka, Bielsko, Polish Silesia. Nov. 6, 1931, No. 30824. Convention date, Nov. 6, 1930. Drawings to Specification. [Class 89 (ii).] The base of the cross section of a wood-screw thread gradually increases in width from the point of the screw toward the head, the pitch and angle of thread remaining constant. The screw is for use particularly on railway sleepers and of constant diameter throughout its length.
Patent GB-426925-A (GB)
Title: Improvements in means for securing trousers in position without braces or belt
IPC: A41F9/02
Filed: 1934-10-27
Abstract: 426,925. Trousers. McELVEEN, J., 105, Grafton Street, Dublin. Oct. 27, 1934. No. 30848. [Class 141] Trousers are provided at the waist with a band 3, attached to the waistband at the back at 7, and each end of which, after passing outward and inward through slits 9, 10, is adjustably connected, by means such as buttons and buttonholes, to the waistband between the hips and the front opening. The band 3, which may be of the same material as the trousers, may be additionally connected to the waistband at 8, and each end may be passed outward through a third slot in the waistband to fasten adjustably to a button on the outside of the trousers. Specifications 330,771, [Class 141], 409,559, and 418,339 are referred to.
Patent GB-247345-A (GB)
Title: Improvements in or relating to apparatus for heating liquids by electricity
IPC: F24H1/10
Filed: 1924-12-23
Abstract: 247,345. Torriani, A. Dec. 23, 1924. Heating by electricity.-An electric heater for liquids employs resistances 2 disposed in a mass 1 which when cold just contacts with and when warm presses against the internal surface of a metallic envelope 6 immersed in the liquid to be heated, the material of the envelope having a lower coefficient of expansion than the material of the mass 1. The envelope 6 is secured to the liquid containing vessel 7.
Patent GB-1225027-A (GB)
Title: Improvements in or relating to method and apparatus for the high-speed carbonisation of solid fuels of small particle size, such as coal
IPC: C10B49/22
Filed: 1968-06-28
Abstract: 1,225,027. Making semi-coke. INSTITUT NATIONAL DE L'INDUSTRIE CHARBONNIERE. 28 June, 1968 [12 July, 1967], No. 30906/68. Heading C5E. Particulate coal is carbonized in two stages: (a) in a fluidized bed 3 at a temperature in the range 500 to 600 C., and (b) by entraining the coal in an inert gas in a vertical stack 7 at a temperature in the range 700 to 900 C. The first stage is heated by recycling semi-coke at 14, 4, and the second stage by a burner 8 supplied with air for combusting the distillation gases and tars from the first stage which enter a chamber 6 through an orifice 10. Carbonized coal enters the chamber 6 at 9, and is carried up the stack 7 by hot combustion gases to a separation chamber 13. Semi-coke product leaves at 15. The orifice 10 may be replaced by an external line which contains a purifier, the gases being introduced at 11 to the chamber 6. Steam or inert gas is the fluidizing gas.
Patent GB-629770-A (GB)
Title: Improvements in or relating to sealing rings for turbines
IPC: F01D11/00
Filed: 1947-11-21
Abstract: 629,770. Elastic-fluid turbines. NAPIER & SON, Ltd., D., and BARLOW, B. W. Nov. 21, 1947, No. 30935. [Class 110 (iii)] Flanges B<4> on turbine rotor discs B, B' co-act with the inwardly and outwardly directed lips of stationary rings F<1>, F<2> to form a leakage preventing device. The rings F<1>, F<2> which are bolted together at F<5> are supported by tangentially arranged links G. These are pivoted to the rings and to brackets E<1> formed on bridge pieces E each secured to the inner ends of two or more stator blades C. Alternatively the rings could be secured to the stator blades and selected blades supported from the stator by the arrangement of links.
Patent GB-786126-A (GB)
Title: Improvements in and relating to electric transformers provided with cylinder-windings
IPC: H01F27/28
Filed: 1955-10-28
Abstract: 786,126. Transformers. SMIT & CO.'S TRANSFORMATORENFABRIK N.V., W. Oct. 28, 1955 [Nov. 29, 1954], No. 30954/55. Drawings to Specification. Class 38 (2). An electric transformer comprises two separate concentric windings at least one of which consists of a number of branches or conductors connected in parallel, the layers of the winding having equal numbers of turns ; conductors of equal thickness and arranged in groups with the same pattern of conductor spacings such that the circulating currents which are generated in the winding as a result of the different spacings are substantially reduced. The Specification sets out certain mathematical formulµ which have to be complied with according to the number of groups in the winding and the number of parallel branch conductors contained by the winding.
Patent GB-465360-A (GB)
Title: Improvements relating to the supports of slidable seats of vehicles
IPC: B60N2/08
Filed: 1935-11-08
Abstract: 465,360. Sliding seats. CHAPMAN, A. W. Nov. 8, 1935, No. 30978. [Class 52 (ii)] In sliding-seat mechanism of the kind in which tubular runners 1 slide in guides 5 of U-shaped cross-section having the.open sides directed towards or away from the centre of the seat, the runners are so constructed that sliding movement in one or both directions is not limited by the guides, and the runners can be engaged with or disengaged from the guides without moving the latter. As shown, the horizontal parts of the runners are spaced outwardly from the bottom ends of the front end parts 2 of the runners, thus the runners may be disengaged by a backward movement. The rear end parts 3A may also be similarly offset. Locking means engaging notches in the guide 5 may be provided. Alternative forms of frame are shown in Figs. 5 and 7.
Patent GB-947730-A (GB)
Title: Improvements in or relating to means for holding an internally splined workpiece
Inventor: CULL WILLIAM
IPC: B23B31/02
Filed: 1961-08-29
Abstract: 947,730. Machine tool details. BIRFIELD ENGINEERING Ltd. Aug. 28, 1962 [Aug. 9, 1961], No. 31015/61. Heading B3B. A holding fixture for an internally-splined workpiece 14 comprises a splined mandrel 8 on which the workpiece is mounted and located at the front of a workhead 1, a gripping member 10 mounted in and projecting from the mandrel with a head 13 so formed that in a free angular position of the member, the head clears the splined bore of the workpiece and allows the latter to be fitted on the mandrel, and in a gripping angular position has gripping surfaces, formed by the inner ends of splines on the gripping member 10 which are aligned with corresponding spline ways of the mandrel and means for turning the gripping member from the free position after the workpiece has been fitted, to the gripping angular position and moving it inwardly into the mandrel so that the splines engage the workpiece and clamp it firmly against the surface 7. The workhead comprises a tubular section forming an indexing sleeve 1 rotatably mounted in antifriction bearings in the body of an associated machine (not shown). The sleeve 1 has bolted thereto the cylinder 5 of a piston and cylinder assembly which acts to turn the gripping member 10 into a gripping, angular position and to draw it into the mandrel 8. The mandrel 8 is keyed to the workhead 6 and clamped by a retaining nut 25. The stem 15 of the gripping member 10 is screwed and locked into the tubular member 17 of a cam member 16 which has a rear flange 18 in the periphery of which is cut a cam groove 19. The cam member is spring-urged into forward position. The piston acts on the cam member through a ring of balls 28 which engage inclined surfaces 29, 30 on the piston and on a compression member 27 fixed axially of the fixture so that the balls move not only in an axial direction but also radially to produce inward movement of the gripping member. A cam follower 39 pivoted to the rear face of the piston 4 has a ball end which engages the cam groove 19. During the first half of the relative movement of the cam member 16 and the piston 4 the ball end of the cam follower engages an inclined portion of the cam groove and turns the cam member and hence the gripping head 10 to the gripping position in which the splines are engaged with the splines on the mandrel. During further rearward movement the cam follower engages a non-inclined part of the groove and causes movement of the gripping head axially of the fixture. Safety means are provided which are operative if the gripping head is not free to turn.
Patent GB-365171-A (GB)
Title: Improvements in and connected with electric switch or coupling devices
IPC: B60R25/04
Filed: 1930-10-17
Abstract: 365,171. Two-part couplings. WALL, W. W., Crockerton, Moredon, Swindon, Wiltshire. Oct. 17, 1930, No. 31060. [Class 38 (i).] A device for preventing unauthorized use of electric circuits for example those associated with a motor-car engine, in which a key with sets of contacts interconnected on two opposite faces removably bridges other contacts joined in the various circuits, is distinguished by having the key of laminations of insulating material, the inner of which have lateral channels accommodating the interconnecting conductor through devious routes. In the examples a socket a is provided with spring-pressed ball contacts 1<P>, 3<P>, 4<P>, 2<P> and 1<m> .. 4<m> on the opposite faces and these are appropriately bridged on insertion of a key with cross-connected contacts z, v, p, m, z<2>, q, u. The key is made of three layers b<1>, b<2>, b<3>. The key may complete a low-tension circuit on being pressed fully home to act as ignition switch and may be provided with means to retain it in a partially withdrawn condition.