baber/WOPTO huggingface dataset:
Patent GB-1031779-A (GB)
Title: Switching circuits using semiconductor diodes
Inventor: HUTSON JEARLD LELDON
IPC: H01M8/12
Filed: 1962-11-30
Abstract: 1,031,779. Semi-conductor switching circuits. HUNT ELECTRONICS CO. Nov. 30, 1962 [Dec. 19, 1961], No. 45534/62. Heading H3T. [Also in Division H2] The flow of unidirectional or A.C. current through a load from an A.C. supply is controlled by a semi-conductor breakdown diode connected in series with the load and means are provided to ensure triggering of the diode by an input pulse. Fig. 3 shows a circuit for controlling the phase angle of current flow to a load 13 from an A.C. supply 11, 12. During the half-cycle when the A.C. supply has the polarity indicated current flows into capacitor C 2  until the diode Q2 breaks down whereupon a positive pulse is applied to the auto transformer L11. The transformer rings and the first part of the negative-going portion of the ring (when the junction capacitance is high due to low voltage across it) is of such a steepness that the diode Q 1  breaks down, allowing current to flow to the load. A capacitance C 1  provides a temporary supply for the diode to ensure complete breakdown and also serves to tune the transformer to a lower frequency and thus reduce highfrequency noise. Firing may alternatively occur when the negative-going portion of the ring exceeds the breakdown voltage of the diode or a two winding transformer may be used to reverse the phase so that breakdown occurs on the initial part of the ring. Resistor R 1 may be varied to adjust the point in the cycle of the supply current at which conduction of Q1 commences. Conduction ceases at the end of the cycle but is restarted by a similar action during the negative cycle if the breakdown diodes are of the symmetrical type or are connected in anti-parallel with a second similar diode. Q2 may be replaced by a switch, a neon tube or a thyratron. Alternatively it may be replaced by a saturable reactor which conducts a pulse of current when saturation occurs and which is controlled by a variable D.C. bias which thus varies the conduction period of Q 1  (Fig. 4, not shown). In a further embodiment the pulse from the reactor is used to charge a second capacitor which is previously charged to a fixed value determined by a Zener diode, the capacitor voltage being used to break-down a further diode QL arranged as shown in Fig. 3 (Fig. 5, not shown). The position of Q 2  and C 2  may be interchanged and the pulse applied to the upper end of L 11  (Fig. 10, not shown). In a further embodiment (Fig. 9, not shown) the pulse generating circuit R 1 , C 2 , Q 2 , L 11  (now designated R 1 , C 2 , Q 4 , L 11 ) is connected through a capacitor in parallel (instead of in series) with Q 1  (now designated Q 13 ) and a choke L 21  is provided in series with the load to prevent the pulse flowing through the load.
Patent GB-1507869-A (GB)
Title: Lipstick testers
IPC: G09F5/00
Filed: 1976-10-19
Abstract: 1507869 Lipstick holders WELLS-HINTON PLASTICS Ltd 19 Oct 1976 [1 Nov 1975] 45576/75 Heading B8P [Also in Division G5] A lipstick holder has an indicating device 3 projecting from the opposite end to that from which the lipstick is dispensed, the device 3 being snap-fitted in the respective end. Four flexible legs 5 of the device 3 project through slots 6 in the end 4 of a base member 1, and the device 3 is shaped to simulate the lipstick in shape and colour.
Patent GB-1157693-A (GB)
Title: Improvements in or relating to Conveyor Systems
Inventor: KLEIN ROBERT JUNIOR
IPC: A43D117/00
Filed: 1966-10-12
Abstract: 1,157,693. Conveyer systems. R. KLEIN. 12 Oct., 1966 [12 Oct., 1965; 22 June, 1966], No. 45637/66. Heading B7L. [Also in Division B8] A conveyer system including at least one station wherein, article carriers 5 driven by engagement with an endless drive chain 3 (first drive means) are disengaged therefrom by a cam rail 26 and driven intermittently at a reduced speed by a reciprocating conveyer (second drive means) driven from said first drive means. The drive chain 3 rotates a gearwheel 9 having a first connecting rod 14 eccentrically mounted thereon and imparting a reciprocating motion to a plate 15 rotatable about a shaft. The plate 15 mounts a spring 18 biased pawl 17 for engagement with a ratchetwheel 19 to produce a step-wise rotation thereof. The ratchet-wheel 19 is fixed to the shaft which thus imparts the step-wise rotation to a further plate (15a) (Fig. 2, not shown) eccentrically fixed thereto and driving a second connecting rod 20 in step-wise reciprocating motion. The connecting rod 20 is connected to a feed bar 21, in turn connected to a feed rail 22 with pawls 23 biased by springs 24 for engagement with catches 28 affixed to the carriers 5 to drive the same intermittently at a reduced speed. The first and second connecting rods 14, 20 are attached in slots to the gear-wheel 9 and the further plate 15a respectively, whereby the amount of eccentricity and thus the advancing speed can be varied. In an alternative embodiment (Figs. 4-6, not shown), the ratchet-wheel 19 is replaced by a roller coupling (31) and a locking arrangement (34) to eliminate backward movement of the coupling. A friction coupling (33) is interposed between the roller coupling (31) and the further plate to disengage the second drive means should the advancing force exceed a predetermined amount, e.g. due to blockages or in the stacking of the carriers.
Patent GB-1149380-A (GB)
Title: Vehicle with boom
IPC: B66C13/18
Filed: 1967-10-06
Abstract: 1,149,380. Gripping and hauling attachment for tractors. ESCO CORP. 6 Oct., 1967 [10 Oct., 1966; 21 Feb., 1967], No. 45683/67. Heading B8H. A vehicle for lifting and transporting logs and the like comprises a wheeled chassis 12, a doublesection boom 17 mounted thereon for movement about horizontal and vertical axes, a grapple 84, to engage said logs, mounted on the outer extremity of the boom and a line 114 extending from a winch 110 and around a roller 120 on the underside of the first section of the boom 18 to further engage the logs. The boom is pivotally mounted on a swing frame 26 for movement about the horizontal axis by an hydraulic ram 50 and the swing frame in turn is mounted on the chassis within a support 28 for movement about the vertical axis by a pair of opposed hydraulic rams 104 driving a rack and pinion 106. The line 114 is guided from the winch 110 through apertures 39, 41 in the swing frame 26 by a pair of vertical rollers 128 and a further roller 126. The grapple is a conventional hydraulically-operated two-arm device pivotally mounted to the boom for movement about vertical and horizontal axes.
Patent GB-1046967-A (GB)
Title: Improvements in or relating to ignition devices for gas burners
Inventor: ROBERTSHAW GRAHAM WILLIAM
IPC: F23Q3/00
Filed: 1963-11-20
Abstract: 1,046,967. Combined spark ignition and flame safeguard systems for burners. NORTH WESTERN GAS BOARD. Nov. 17, 1964 [Nov. 20, 1963], No.45722/63. Heading F4F. A combined spark ignition and flame safeguard system for a town gas, or town gas-air burner comprises a spark electrode 13, Figs. 1, 2 (not shown), and a burner plate 11 forming a spark gap in the flame zone, a flame detector 24 responsive to the electrical conductivity of the spark gap, and a switch 21 which engages either a contact 22 to connect the spark gap with a transformer secondary 20 for ignition of the flame, or a contact 23 to connect the spark gap with the flame detector 24 for sensing of the flame. While the conductivity of the spark gap remains high, the supply of gas is maintained; when low, a shut-off valve in the gas supply is activated. The transformer primary 27 is supplied with A.C. or interrupted D.C. via a switch 26. The switch 21 may be located elsewhere in the circuit of Fig. 3. The spark electrode 13 is enclosed in an insulating sleeve 14 spring-urged into sealing engagement with the burner plate 11, and electrical connection is made to the electrode 13 at 17 or 18. The transformer 28 may be disposed, Fig. 4 (not shown) within the burner body 10, or, Fig. 5 (not shown), within a housing 29 attached to the side of the burner body. In another embodiment. Fig. 1 (not shown), the sleeve 14 is otherwise sealed against the plate 11, and is supported from the body 10 by spacing members.
Patent GB-1166884-A (GB)
Title: Drilling Device
IPC: B23B47/08
Filed: 1967-10-06
Abstract: 1,166,884. Percussive drills. PAN AMERICAN PETROLEUM CORP. 6 Oct., 1967 [24 Oct., 1966], No. 45945/67. Heading B4C. [Also in Division E1] A percussion motor mounted in the pipe string of an earth or rock drill has an anvil 26 fixed to the drill bit and a hammer 14 reciprocated by fluid pressure in the pipe bore 40. The hammer and anvil have opposed valve seats 24, 25 between which reciprocates a valve 20 fixed to a piston 19 in a tube 17. The top of the piston is exposed to a relatively low pressure, for example as shown by connection 18 to the well bore annulus, or (Fig. 11, not shown) by a bore in the piston-rod 21 to the space 27. The space below the piston is exposed to the pressure in the bore 40. In the position shown, the hammer is rising because of the pressure differential between the lower face 30, exposed to pipe pressure and the annular upper face exposed to well annulus pressure through ports 12. When a valve element 32 on the hammer engages the tube 17 the pressure differential across the valve 20 reduces, because of the by-pass 28A, and the pressure differential on the piston 19 raises the valve 20 to seat on the hammer. The pressure on the face 30 is also reduced and the hammer is propelled downwardly. When the hammer strikes the anvil the valve 20 is unseated by inertia and returns to the valve seat 25 on the anvil, and the cycle is repeated. The valve seat 24 may be an insert (Fig. 3, not shown) with limited axial freedom of movement to provide a dashpot effect. The anvil is splined to the pipe string 11 so that rotation of the string is transferred to the bit. The axial freedom of the anvil is such that before the bit strikes bottom the piston 19 is below the ports 36, and there is no reciprocation. In another embodiment (Figs. 8 and 9, not shown) the valve 20 is unseated from the anvil on the upstroke of the hammer by abutments on the hammer and piston-rod. The top of the anvil and the bottom of the hammer have drainage grooves to prevent cushioning of the impact.
Patent GB-1122878-A (GB)
Title: Electro-magnetic deflection circuit
IPC: G09G1/04
Filed: 1966-10-14
Abstract: 1,122,878. Cathode-ray tube circuits. INTERNATIONAL BUSINESS MACHINES CORP. 14 Oct., 1966 [28 Oct., 1965], No. 45981/66. Heading H4T. In an arrangement for deflecting the beam of a cathode-ray tube by supplying binary weighted currents I 1 , I 2 , I N  to the ends A, B of the push-pull deflection coils X, X via switches S controlled by the bipolar binary coded output of a register 11, variation of the D.C. voltage level at points A and B produced by variations in the voltage drop across the coils when different deflection currents flow is compensated by varying the potential at the other ends A<SP>1</SP>, B<SP>1</SP> by an amount which is proportional to the actual current. This is effected by deriving compensating voltages via binary weighted resistors R 1 , #R 1  ... R N , R N  connected to corresponding stages of register 11 and supplying such voltages via buffer stages 22, 22<SP>1</SP> to the base of transistors 17, 17<SP>1</SP> arranged in a " Darlington configuration " with transistors 16, 16<SP>1</SP> connected to the ends A<SP>1</SP>, B<SP>1</SP> of the coils. To prevent the amplifiers 22, 22<SP>1</SP> from turning " off " and then " on " when the register changes from a condition of all " zeros " or all " ones " to some intermediate value resistors 25, 25<SP>1</SP> are provided to maintain a quiescent current. A similar arrangement is employed for the Y component of deflection.
Patent GB-1536616-A (GB)
Title: Puzzle apparatus
IPC: A63F9/08
Filed: 1977-11-07
Abstract: 1536616 Puzzle C E HIGH 7 Nov 1977 [8 Nov 1976] 46219/77 Heading A6H A puzzle comprises a square base having, at each side, several pivoted strips which can be folded over the base to interleave and form a pattern.
Patent GB-1141040-A (GB)
Title: Improvements in or relating to sliding door gear
Inventor: BUNCE ANTHONY
IPC: E05D15/06
Filed: 1965-11-02
Abstract: 1,141,040. Bearings. BECKETT, LAYCOTT & WATKINSON Ltd. 28 Oct., 1966 [2 Nov., 1965], No. 46462/65. Heading F2A. A slide gear for a sliding door, for example, comprises an arm 17, one end of which is secured to the door and the other end of which carries a pair of opposed balls 18 which run along two surfaces of a track. The balls 18 are each partially housed in a cup-shaped recess 20 in the arm 17 and are spaced from the wall of the recess by a number of balls 21 of smaller diameter. The track 16 may be of V-, L- or T-section for example and the opposed balls 18 may face inwardly. The balls 21 are retained by a washer 22 which may be held between the arm 17 and the track 16 or may be attached to the arms by rivets or screws.
Patent GB-1325367-A (GB)
Title: Cross-linking polymerization of ethylenically unsaturated  monomers
IPC: C08F283/01
Filed: 1970-09-30
Abstract: 1325367 Crosslinking polymerization with acetylenic comonomers UBE INDUSTRIES Ltd 30 Sept 1970 [30 Sept 1969 19 Nov 1969] 46553/70 Heading C3P Crosslinked polymers are prepared by polymerizing either (i) at least one ethylenically unsaturated monomer selected from acrylic acid, methacrylic acid, halo-acrylic acids, alkyl acrylates and methacrylates, haloalkyl acrylates and methacrylates, cycloalkyl acrylates, aryl acrylates and α- and/or #-substituted derivatives of the aforementioned compounds and/or at least one ethylenically unsaturated monomer selected from acrylonitrile, methacrylonitrile, styrene, m- and p-methylstyrene, p-methoxystyrene, o-, in- and p-bromostyrene, p-iodostyrene, p-cyanostyrene, vinylidene chloride, vinyl chloride, vinyl acetate, vinyl carbazole, 2- vinylpyridine and butadiene, or (ii) a mixture of an unsaturated polyester of a polycarboxylic acid and an ethylenically unsaturated crosslinking monomer, the polymerization being carried out in the presence of (a) ultra-violet or high-energy ionizing radiation or a free radical initiator and (b) from 10<SP>-2</SP> to 5À0 molar per cent, with respect to the total quantity of ethylenically unsaturated monomer(s) (including any ethylenically unsaturated polyester) of acetylene or a derivative thereof in which only one of the hydrogen atoms is replaced by an organic radical. The unsaturated polyester in (ii) may have ethylenic and/or acetylenic unsaturation; the comonomer is suitably a monomer as defined in (i). Suitable acetylenic cross-linking agents include acetylene, optionally substituted (C 1 - C 9 -alkyl)-acetylenes, and phenyl acetylene. The high energy ionizing radiation may be γ-rays, X-rays, α-rays, #-rays or accelerated electron beams. Examples of free radical initiators are benzoyl peroxide, di-t-butyl peroxide, acetoxime, azobisisobutyronitrile, diisopropylperoxycarbonate and bis - (4 - t - butylcyclohexyl)- peroxycarbonate. Polymerization may be effected in the presence of preformed polymers, fluorine-containing halogenated hydrocarbons, glass, glass cloth, glass wool, rock wool, clay or wood chips. In the examples polymerization is effected in the absence of a diluent. The polymers produced are useful for making articles such as films, coatings and moulded products.
Patent GB-984412-A (GB)
Title: Improvements in or relating to coated fabrics for convertible automobile tops
IPC: D06N3/06
Filed: 1963-11-26
Abstract: 984,412. Coated fabrics. INTERCHEMICAL CORPORATION. Nov. 26, 1963, No. 46597/63. Heading B2E. A coated fabric, useful for convertible automobile tops, comprises a sheet of woven textile fabric 12, a first layer 10 comprising weatherresistant plasticized polyvinyl chloride coated on one surface of the textile and a second layer 14 comprising cured polymethyl methacrylate having a molecular weight on the order of 76,000-77,000 on the first layer. The fabric may be impregnated with a water repellant. The second layer may include a pigment and a flattening agent. The coated fabric may be produced by coating one surface of the sheet of woven textile fabric with the first layer, applying heat to cure the layer, applying a second layer over the first layer and then drying the second layer. A water-repellant may be applied to the uncoated surface of the woven textile fabric sheet subsequent to the drying of the second layer. A coated laminated fabric, useful for convertible automobile tops, comprises two sheets 22, 26 of woven textile fabric laminated together by means of a cured elastomeric adhesive coating 24, a first layer 20 of a weather-resistant pigmented plasticized polyvinyl chloride coated on the upper sheet of woven textile fabric and a second layer 14 comprising pigment and cured polymethyl methacrylate having a molecular weight on the order of 76,000-77,000 on the first layer. The textile fabric may be of cotton, rayon, or synthetic fibres such as nylon, cellulose acetate and polyester, or mixtures thereof, and may be of a smooth strong weave, e.g. sheetings, drills, twills, and sateens. The term "polyvinyl chloride" includes the homopolymer and any copolymer of vinyl chloride with, for example, vinyl acetate and maleic anhydride. The waterrepellant may be a wax emulsion, emulsions of water-insoluble metallic soaps, and chlorosilanes which convert on the fabric to alkyl polysiloxanes.
Patent GB-1134880-A (GB)
Title: Hydraulic cutting stream interrupter
Inventor: CHARLES PAUL ANTHONY STUART
IPC: B23D15/14
Filed: 1966-10-19
Abstract: 1,134,880. Shearing. ROLLS-ROYCE Ltd. 9 Aug., 1967 [19 Oct., 1966], No. 46711/66. Heading B3W. An hydraulic cutting stream interrupter, for cutting material by impinging high pressure fluid jets on to the material comprises a rotary valve member 13 mounted in a body 10 which has at least one passage from a high pressure fluid chamber 11 adapted to pass fluid to the port or ports in the member 13. The port or ports 20 in the valve member are arranged so that the fluid pressure rotates the member. The ports are arranged so that only one is aligned with a passage in the body at any one time. The member 13 is mounted on frustoconical portions 15, 16 of the body. In one embodiment fluid passages (25), (30) are provided hydrostatic bearing surfaces. The jets of high pressure fluid are emitted from passages 20 and are preferably aligned so that the fluid is directed to a common focus.
Patent GB-1338963-A (GB)
Title: Ruthenium complexes of organic phosphines and their use as isomeri sation catalysts
IPC: B01J31/18
Filed: 1971-10-07
Abstract: 1338963 Isomerizing olefins SUN OIL CO 7 Oct 1971 [14 Oct 1970] 46713/71 Heading C5E [Also in Division C2] An olefin is isomerized by contacting it under an inert atmosphere with a catalyst complex of Formula I  where X is halogen, R 1 , R 2  and R 3  are C 1-6  alkyl or cycloalkyl or aryl groups, m is 2 or 3, n is 0 or 1 and m+n = 3. The catalyst complex may be prepared in situ by reacting, in the presence of the olefin starting material, a complex of Formula II with carbon monoxide or an organic compound which upon reaction with the metal complex provides a carbonyl group, for example a formate ester, epoxide, aldehyde or alcohol. The amount of catalyst complex present may be from 10<SP>-2</SP> to 10<SP>-4</SP> moles per litre of olefin. Examples describe the isomerizations of 4- vinylcyclohexene to ethylidene cyclohexene; allylbenzene to propenylbenzene; and 1-hexene to a hexene mixture.
Patent GB-1428908-A (GB)
Title: North seeking gyro pendulum
IPC: G01C19/38
Filed: 1974-10-29
Abstract: 1428908 Automatic control of attitude BODENSEEWERK GERATETECHNIK GmbH 29 Oct 1974 [8 Dec 1973] 46859/74 Heading G3R [ Also in Division G1] A north-seeking gyro pendulum comprises a .gyro unit within a main casing 12 suspended by a tape 10 and having a north seeking gyro directing torque acting thereon, pick-off means for producing a signal indicative of the azimuth deflection of the gyro unit from a tape centre position, and a torque motor 30 to which the signal is applied via an amplifier 24. The gyro unit 12 comprises a pair of gyros having mutually inclined spin axes 34, 36, the gyros having, in use, equal angular momenta and being pivoted about vertical axes 42, 44, the gyros being coupled together to carry out equal and opposite rotational movements and being resiliently restrained to a rest position, the period of the azimuth oscillations of the gyro unit being equal to the period thereof about the angle bisector of the axes 34, 36. The gyros are interconnected, in the embodiment shown, by a linkage 48 comprising lever arms 50, 52 fixed, respectively to the pivot points of gyro casings 38, 40, a link 54 being pivotally connected to the free ends thereof. One end of arm 52 is coupled to an intermediate point between the ends of tensioned spring means 58 fixed to the main casing 12. A mathematical treatment shows that with suitable choice of the values of various parameters the two periods of oscillation may be equalized and "rectifier effect" problems eliminated i.e. problems resulting from the different moments of inertia of a gyro unit about the gyro spin axis and an axis at right angles to the spin axis and the tape axis.
Patent GB-1209024-A (GB)
Title: Improvements in or relating to oil mist or smoke detection
Inventor: KERSHAW FRANK
IPC: G01N21/53
Filed: 1966-10-21
Abstract: 1,209,024. Photo-electric smoke or oil mist detectors. ASSOCIATED BRITISH COMBUSTION Ltd. Jan.9, 1968 [Oct. 21, 1966], No.47247/66. Heading G1A. In a photo-electric oil mist or smoke detector the flow of oil mist or smoke bearing sample is periodically interrupted and the detector cleared of sample so that the detector can be zeroized. A tube 1 having a lamp 13 and photo-cell 14 at opposite ends receives an oil mist or smoke sample from an inlet 3 which is periodically blocked by solenoid operated plunger 5 which simultaneously opens a second inlet 4 to admit clean air to flush the tube. A cam 8 periodically energizes the solenoid and completes a circuit to a motor coupled to a potentiometer 10. If a recorder indicating the detector output is at this moment not at zero one or the other of contacts 12 is closed by a cam 11 to operate the motor and drive the recorder back to zero. Instead of a potentiometer 10, a shutter in the light path, and a reference light path of one is used, may be driven by motor 9 to zeroize the detector.
Patent GB-1170499-A (GB)
Title: Washing Device for Blanket Cylinders of Rotary Printing Machines
Inventor: MAURER ROLF
IPC: B41F35/06
Filed: 1967-10-18
Abstract: 1,170,499. Printing-apparatus. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. 18 Oct., 1967 [10 Nov., 1966], No. 47514/67. Heading B6C. Apparatus for washing the surface of an offset cylinder 1 to prevent set-off comprises a cleaning roller 9 having a hard, grooved, surface and adapted to co-operate with a fountain roller 8 partially immersed in cleaning liquid in a fountain 7 and with the cylinder 1 which is rotated in the opposite direction to the roller 9 and at a higher or lower peripheral speed . The roller 9 may be grooved longitudinally, Fig. 2 (not shown), or helically, Fig. 3 (not shown), the grooves being inclined to provide stripping edges. The roller 9 may be of glass, or a ceramic or plastics material, and the roller 8 consists of a porous slightly compressible material. The fountain is provided with an inspection window 11 and with projections 13 on its internal bottom surface. The contact pressure between the rollers 8 and 9 may be adjusted to vary the ink transfer. The roller 9 may be moved into contact with the cylinder 1 by a pneumatic piston operated by an electromagnetic valve which is itself operated, in the case of web printing, when the reel changing operation is initiated. Cams on the cylinder 1 trip the roller 9 in the region of recesses in the surface of the cylinder. In the case of successive printing units the cleaning devices are operated in sequence by timing relays.