baber/WOPTO huggingface dataset:
Patent GB-1394450-A (GB)
Title: Power unit for vehicles including an air-cooled internal  combustion engine and an hydrodynamic brake
IPC: F01P9/00
Filed: 1972-12-04
Abstract: 1394450 Cooling I C engine lubricant KLOCKNER-HUMBOLDT-DEUTZ A G 4 Dec 1972 [4 Dec 1971] 55883/72 Heading F1B [Also in Divisions F2 and F4] The fluid of a hydrodynamic brake 14, coupled via or in conjunction with a variable speed transmission unit 13 to an air-cooled compression ignition engine, and the engine lubricating oil are cooled in a common heat exchanger 12. The same oil may be used for the brake fluid and the engine oil and the heat exchanger may then be provided by the engine sump. A double-walled air cooled sump may have the brake fluid cooled by flow through the cavitv between the sump walls. In the embodiment shown oil from the sump 11 is pumped via the exchanger 12 and a fine mesh filter 15 to the brake 14 and via the exchanger to the fluid coupling 7 controlling the exchanger air cooling fan 6, the engine pistons 2 and the crankshaft bearings 5. A thermostatic valve 31 and magnetic valves 33, 34 control oil flow to the coupling 7 and the pistons 2. The brake (38), Fig.2 (not shown), may be combined as a unit with a fluid transmission (37), e.g. a torque converter, and the exchanger (41) may have three sets of passages (42, 43, 44), Figs.3 to 5 (not shown), with the air passages (42) arranged cross-flow to the oil passages (43, 44) in counter-flow. The oil passes through one set of passages to the transmission (37) and brake (38) and from the brake through the other oil passages to the engine.
Patent GB-1237879-A (GB)
Title: Improvements relating to textile machines
Inventor: MACKIE JOHN KAY PRINGLE
IPC: D01G15/48
Filed: 1967-12-08
Abstract: 1,237,879. Stripping knives. JAMES MACKIE & SONS Ltd. 22 Nov., 1968 [8 Dec, 1967], No. 55990/67. Heading D1N. A stripping knife assembly, for use with a doffing roller, has knives 7 mounted on arms 8 projecting from a hollow shaft 1 which is free to turn at its left-hand end on a mounting 2 and has its right-hand end connected through a coupling 3 to a mechanical drive 4. The shaft 1 tends to execute a simple harmonic motion under the torsional control of a bar 12 rigidly connected to the mounting 2 at 14 and the shaft 1 at 13. The coupling 3 comprises two concentric halves. The inner half 25 is formed integrally with the input shaft 23 and is centred in relation to the outer half 26. Springs 31 urge plungers 30 outwardly into engagement with recesses 35 in part 26. When each plunger 30 is in the centre of its recess 35, relative angular movement between parts 25 and 26 produces very little compression of the spring 31 so that very little torque is transmitted. However as the angular displacement between 25 and 26 exceeds this small value the torque increases rapidly with displacement. During starting the driving part 25 of the coupling will move through its full stroke. Due to the resistance of torsion bar 12 the part 26 initially moves through only a small angle and the coupling will slip. At the end of each stroke sufficient power is transmitted to impart a small degree of angular movement to driven part 26 and this builds up stroke by stroke until the maximum relative angular displacement between parts 25 and 26 decreases to such an extent that a state of resonance is obtained.
Patent GB-1327629-A (GB)
Title: Magnetic materials
IPC: C21D8/12
Filed: 1970-11-25
Abstract: 1327629 Magnetic materials for switches WESTERN ELECTRIC CO Inc 25 Nov 1970 [26 Nov 1969] 56021/70 Heading C7A [Also in Division H1] A magnetic material with a substantially rectangular hysterisis loop for use in a bistable switch consists of in wt. per cent:- the remainder being Fe with or without impurities. Up to 7¢ wt. per cent of any of the elements Mo, V, Nb, Ti, Ta and W may be added as partial substitutes for Cr. Up to 1 wt. per cent in total of Mn, Ca, Ce, Be and Mg may be added. Si and S may also be present but in amounts less than 0À2 wt. per cent and 0À01 wt. per cent respectively. The material is produced by a process which terminates in a cold reduction of at least 50% followed by heat treatment between 500 and 650‹C. for between 2 minutes and 10 hours, 2-5 minutes at 650‹C. and 5 to 10 hours at 500‹C., the carbon being added separately.
Patent GB-1282610-A (GB)
Title: Locking means for longitudinally split barges
IPC: B63B35/30
Filed: 1969-11-21
Abstract: 1282610 Hopper barge INGENIOR F SELMER AS 21 Nov 1969 [25 Nov 1968] 57183/69 Heading B7A [Also in Division E2] In a dumping barge which has two half hull portions 1, 2 pivotable about a longitudinal axis through hinges 3, the half hull portions are locked together by an elongate hook 8 pivotably mounted at 9 on portion 1 and which cooperates with an eccentric comprising cam 11 rotatable about shaft 10. The rotary movement of the eccentric is effected by lever 13 secured to the eccentric and connected to piston rod 14 of a pressure cylinder 15, adjustment of the pressure cylinder ensuring that the engagement position of the cam with the hook in the locking position is located above the line of connection between the centres of rotation of the cam and the hook. The downward pivoting of the hook is restricted by stopper 24 so that when the hull portions are pivoted toward each other the nose 22 of the hook slides up guide surface 23 to slide on and grip the cam. In the embodiment shown the adjustment of the pressure cylinder is effected by rotation of a second eccentric 16 by manually operated arm 17 which can be locked in various positions by nut 19.
Patent GB-1276140-A (GB)
Title: Improvements relating to hydraulic filters
Inventor: HARCOURT RONALD ALAN GARCIA
IPC: B01D29/41
Filed: 1969-11-25
Abstract: 1276140 Filter element FAIREY HYDRAULICS Ltd 19 April 1971 [25 Nov 1969] 57638/ 69 Heading B1D A filter element comprises two annular sintered bronze discs, whose outer edges are turned in and welded together at 14 and whose flat inner faces are spaced apart by a wire mesh disc 12. In use a number of such discs are clamped together with interposed sealing rings by a bolt extending through their aligned apertures 17, and the resulting assembly operates under inward flow in a housing (not shown). The elements are capable of withstanding the full pressure in a hydraulic circuit (10,000 p.s.i.).
Patent GB-1114670-A (GB)
Title: Additives for polyester compositions
Inventor: RUDOLPH HANS
IPC: C09D167/00
Filed: 1966-12-29
Abstract: A polyester moulding or coating composition comprises at least one saturated fatty acid cyclohexylamide, the acid radical of which has at least 10 carbon atoms.  The cyclohexylamide may be added to the polyester composition in molten form and improves the flow behaviour of the composition.  Suitable cyclohexylamides are those derived from capric, lauric, myristic, palmitic, stearic, 12-hydroxy-stearic and behenic acids.  In examples a polyester derived from phthalic anhydride, maleic anhydride, ethylene glycol and 1,3-butylene glycol, dissolved in styrene and containing hydroquinone is used.  Stearic acid cyclohexylamide and lauric acid cyclohexylamide are added. Dimethylaniline (solution in dimethyl phthalate), benzoyl peroxide, cobalt naphthenate (solution in toluene) and methyl ethyl ketone hydroperoxide are also added in various examples.
Patent GB-1369670-A (GB)
Title: Communication systems
IPC: H04Q3/54
Filed: 1971-12-17
Abstract: 1369670 Automatic exchange equipment WESTERN ELECTRIC CO Inc 17 Dec 1971 [21 Dec 1970] 58606/71 Heading H4K A telephone system has a line hunting arrangement for terminating calls whereby an incoming call is routed to each subscriber of a group in turn until one is found that is idle. The system shown consists of the line circuit LC11 appropriate to instrument TS11 which is connectible through a six-wire crossbar switch network SN to trunks, intercom trunks and registers, Fig. 1 (not shown), and is controlled by a common control CC. A plurality of telephone instruments TS11-TS48 with their line circuits LC11-LC48 form a group of PBX extensions to which line hunting is applied. When an incoming call appears on the trunk circuit the ENAB gates of all line circuits in the group are enabled and the ADDR gate corresponding to the address of the call is operated so that a mark appears on LCS. If line circuit LC11 is idle this mark appears on lead NRC or RSC and the call connection is completed in the switching network SN. If line circuit LC11 is busy, line LB11 carries the mark and this informs common control of the busy status so that line hunting can occur. Points BLT11 and B4B are connected to the succeeding and preceding line circuits respectively and thus point B4B will be marked. A line hunting signal from common control is applied on lead HTE and gate HUNT operated to operate gate STAT which produces a mark on LCS. If the line circuit is idle this mark appears on NRC or RSC and thus common control is instructed to make the respective connection. If all the line circuits are busy the control will send a busy tone to the caller.
Patent GB-1305860-A (GB)
IPC: C07C/
Filed: 1971-12-17
Abstract: 1305860 Purification of doxycycline ALFA FARMACEUTICI SpA 17 Dec 1971 [31 March 1971] 58807/71 Heading C2A A process for purifying the 6-α-epimer of doxycycline of Formula I comprises precipitating 6-α-doxycycline 5-sul phosalicylate by means of sulphosalicylic acid from a solution of impure doxycycline (or a salt thereof) in an aqueous organic solvent containing from 20 to 70% by volume of water and from 80 to 30% by volume of N,N-dimethylformamide, N,N,-dimethylacetamide, dimethylsulphoxide or acetone. Such an aqueous organic solvent may preferably contain from 40 to 60% by volume of water. In a preferred process, 15 to 25 parts by volume of the aqueous organic solvent are used for each part by weight of 6α- doxycycline. The 6α-doxycycline 5-sulphosalicylate may be precipitated by adding to a solution containing doxycycline 5À5 to 6À5 moles of 5-sulphosalicylic acid per mole of 6α-doxycycline. The 5-sulphosalicylate salt produced may be converted into the free base of doxycycline or into another salt thereof. The process may be used for purifying doxycycline which has been produced by catalytic hydrogenation of methacycline.
Patent GB-1156070-A (GB)
Title: Gas-Controlled Jig.
IPC: B03B5/24
Filed: 1967-12-28
Abstract: 1,156,070. Jig washers. BETEILIGUNGSUND PATENTVERWALTUNGS G.m.b.H. 28 Dec., 1967 [4 Oct., 1967], No. 58855/67. Addition to 1,032,837. Heading B2H. In a gas-operated jig of the type described in the parent specification, instead of stepwise adjustment of the change in volume of the hollow body (3-5), and hence of the length of the jigging stroke, by the alternative utilization of two lower limit switches (12, 13) which limit the contraction in length of the hollow body, infinitely variable adjustment of the length of the jigging stroke is provided by interposing an adjustable delay member between a single lower limit switch and the means for varying the internal pressure in the. hollow body. The lower limit switch is arranged, through the delay device to effect simultaneous opening and closing of the inlet and outlet valves (14, 15) respectively. To ensure re-starting of the jig after stopping, the movable exciting element (7) of the jig switch is of .such length that it provides excitation even in its end position corresponding to maximum delay. Alternatively, the switch may be connected to an emitter of an electrical starting impulse.
Patent GB-1375996-A (GB)
Title: Processes for up-grading alumina
IPC: C01F7/46
Filed: 1971-12-21
Abstract: 1375996 Up-grading alumina KENNECOTT COPPER CORP 21 Dec 1971 [11 Jan 1971] 59458/71 Heading C1A Alumina contaminated with sulphate impurities is upgraded by contacting at a temperature below the boiling point of the resulting reaction mixture with an aqueous solution containing a reagent which acts as a base to dissolve the sulphate impurities and to form soluble sulphate salts and to convert soluble aluminium values in the impure alumina into insoluble compounds, said reagent being present in sufficient quantity to maintain the pH of the reaction mixture within the range of 5 to 10 and separating the purified insoluble alumina and other aluminium compounds from the reaction mixture (e.g. by filtration or centrifuging). The impure alumina may be produced by calcining alunites which may be either naturally occurring or produced by hydrolysis of an acidic solution containing dissolved aluminium values, at a temperature in the range 700 to 850‹ C. The reagent employed may be sodium hydroxide, sodium carbonate, ammonium hydroxide, ammonium carbonate, potassium hydroxide, potassium carbonate, lithium hydroxide, lithium carbonate or a citrate and the resulting upgraded alumina may be used as feed material in the Bayer Process.
Patent GB-1369022-A (GB)
Title: Rotary electric machines
IPC: H02K3/18
Filed: 1971-12-22
Abstract: 1369022 Dynamo-electric machines; electric couplings NIPPONDENSO CO Ltd 22 Dec 1971 [27 Dec 1970] 59747/71 Headings H2A and H2E A rotary electric machine, suitable for use as a starter motor for vehicle engines, comprises a cylindrical yoke 21, Fig. 3, insulated at least on its inner surface and carrying a plurality of poles 23 each having a pole shoe insulated on its surface facing the yoke, and a plurality of field coils 22 wound on the poles, the gaps between the turns of the coils, between the coils and the yoke and between the coils and the pole shoes being filled with insulation. Thermoplastic or thermosetting resins may be used as the insulation. The coils are formed by winding continuously and directly on the pole bodies a wire assembly comprising a plurality of randomly bundled electrically insulated wires. An additional winding 33, Fig. 9 (not shown), referred to as a brake winding, is also wound round the poles and embedded in the same insulation as the field coils. In use of the machine, the additional winding is connected in parallel with the armature. A portion of the wire assembly may be brought out between two poles for connection to a terminal, so eliminating the need for lead wires. The wires are connected to the terminal using a connector 37, Fig. 13, comprising a sleeve 35 with an inner coating of low melting-point metal such as tin, lead, solder or zinc. On placing the connector over a looped portion of the wire assembly (Fig. 11) and passing a current through it, the insulation on the wires melts and the coating 36 fuses to connect the sleeve 35 to the wires.
Patent GB-1400810-A (GB)
Title: Electron gun assembly with unitary lens system
IPC: H01J29/48
Filed: 1972-12-29
Abstract: 1400810 Electron guns HITACHI Ltd 29 Dec 1972 [30 Dec 1971] 60124/72 Heading H1D The gun of a cathode ray tube having a fluorescent screen includes a lens system formed of at least two aligned lenses, the cross-over point a, Fig. 2, of the beam emitted from the cathode being formed by a prefocusing lens system at the focal point of the first lens L 1 , to collimate the beam parallel to the axis between the two lenses, whereby the effect of a large aperture lens is produced while avoiding the aberration which would be associated therewith. As shown, electrodes G 3 , G 4  constitute a bipotential lens, and electrodes G 4 , G 5 , and G 6  a unipotential lens, the length of G 4  being chosen greater than its diameter, and that of G 3  substantially equal to the focal length of the first lens L 1 . In further embodiments, the lens system is formed by two unipotential lenses (Fig. 3, not shown) or by two bipotential lenses (Fig. 4, not shown).
Patent GB-1244268-A (GB)
Title: Fuel oil additives
IPC: C10L1/16
Filed: 1969-12-10
Abstract: 1,244,268. Olefin copolymer oil additives. E.I. DU PONT DE NEMOURS & CO. 10 Dec., 1969 [19 Dec., 1968], No. 60264/69. Heading C3P. [Also in Divisions C4-C5] An additive for improving the low temperature flowability of middle distillate fuel oils comprises a hydrocarbon solution of 15 to 75 weight per cent of a soluble, linear copolymer of 58 to 68 weight per cent of ethylene, 32 to 42 weight per cent of propylene and optionally up to 10 weight per cent of 1,4 - hexa - diene, said copolymer having an inherent viscosity of 0À1 to 0À45 as a 0À1 weight per cent solution in tetrachloroethylene at 30‹ C., a molecular weight distribution of less than 8, a pendent index of 10 to 17 and an average pendent size not greater than 2 carbon atoms. Specified solvents are hexane, benzene, toluene, cyclohexane, kerosene and fuel oil to which it is to be added. Examples describe the preparation of suitable ethylene/propylene hexadiene copolymers by polymerization in hexane in the presence of vanadium tris(acetylacetonate) and diisobutyl aluminium chloride.
Patent GB-1331730-A (GB)
Title: Process for preparing compounds containing a thiogroup
IPC: C07D257/04
Filed: 1971-12-29
Abstract: 1331730 Thio group-containing compounds FUJI PHOTO FILM CO Ltd 29 Dec 1971 [29 Dec 1970] 60474/71 Heading C2C A process for the preparation of a thio groupcontaining compound comprises reacting a sulphenamide with a compound having a reactive methyl or methylene group. This latter compound is defined as one having at least one electronegative group which is attached adjacent to either a -CH 2 - or -CH 3  group in the molecule. Suitable electronegative groups are those of the formula -COR<SP>4</SP>, -CONHR<SP>4</SP>, -CONR<SP>4</SP>R<SP>5</SP>, -SO 2 R<SP>4</SP>, -SO 3 H, -SO 2 OR<SP>4</SP>, -SO 2 NR<SP>4</SP>R<SP>5</SP>, -CN or -(NR<SP>4</SP>R<SP>5</SP>R<SP>6</SP>)<SP>+</SP> wherein R<SP>4</SP>, R<SP>5</SP> and R<SP>6</SP> each represent a (C 1 -C 18 ) substituted or unsubstituted, saturated or olefinically unsaturated aliphatic radical, a substituted or unsubstituted aryl radical or a 5- or 6-membered heterocyclic radical, or two of R<SP>4</SP>, R<SP>5</SP> and R<SP>6</SP> together form a saturated 5- or 6-membered nitrogen-containing ring. The reaction is preferably carried out at a temperature of from 5‹ to 80‹ C. in the presence of a basic substance. Several novel compounds which may be prepared by the method of the invention are described.
Patent GB-1363249-A (GB)
Title: Twisting filaments together
IPC: H01B13/02
Filed: 1971-12-29
Abstract: 1363249 Stranding apparatus TELEFONAKTIEBOLAGET L M ERICSSON 29 Dec 1971 [30 Dec 1970] 60544/71 Heading D1T In a flyer type stranding machine an insulated electric conductor 6 is fed to a stranding nipple 5 from a supply drum 4, the drum 4 being suspended within a flyer 3 by means 8 having a centre of gravity displaced from the rotational axis of the flyer 3. The flyer 3 receives an insulated electric conductor 2 from a drum 1 and feeds this conductor 2 to the nipple 5. The rotational axis of the drum 4 and the flyer 3 are normal to each other but the rotational axis of the means 8 and flyer 3 is inclined at an angle less than 45‹ to the vertical, preferably by more than 4‹ but less than 10‹. This inclination prevents the suspension means 8 from rotating. A plurality of the stranding machines can be driven at different drive ratios from a common drive and feed a further stranding and/or injection moulding machine for forming a multicomponent electric conductor. Fig. 4 (not shown) shows a circular plate with stranding nipples around its periphery. This plate rotates alternately clockwise and anticlockwise to twist strands together with alternating directions of lay.
Patent GB-1339299-A (GB)
Title: Castor wheels
IPC: B60B33/00
Filed: 1971-12-30
Abstract: 1339299 Castors HAPPE & CO 30 Dec 1971 [30 Dec 1970] 60650/71 Heading A4U [Also in Division B7] A castor wheel comprises a wheel body surrounded by a ring 3 of rubber or like material, and a ring 4 of hard material surrounding and compressing the ring 3, the ring 4 being removable by severing it at the point 5 to convert the wheel from one usable on a carpeted floor surface to one usable on concrete or parquet floors. The ring 4, preferably of polyamide and having an insert strip of metal to protect the ring 3 from a severing tool, is forced over the ring 3, which in unstressed state has the same external diameter as the ring 4, and body and rim parts 1, 1', 2, 2' are forced into the ring 3 and snapengaged with each other, so that the ring 3 is urged outwardly and the ring 4 stressed. The ring 4 may be made of wood or paper.
Patent GB-701283-A (GB)
Abstract: 701,283. Miners' lamps. OLDHAM & SON, Ltd., and MORTON, H. Oct. 3, 1952 [Nov. 6, 1951], No. 26000/51. Class 75 (2) In a miner's cap lamp comprising a lamp chamber 1 closed at its forward end by a lens 2 clamped by a bezel 3 screwed to the outside of the chamber, a reflector 10 is supported within the chamber for movement along the axis of the chamber but is restrained against angular movement and the reflector is moved to focus the lamp 5 by means of a ring 17 which is angularly movable about the chamber axis but is rendered tamperproof by the bezel. The forward end of the reflector has three equi-spaced lateral lugs 16 normal to the axis of the reflector and located in internal helical threads in the ring 17. The threads may have three starts or a single start and in the latter case the lugs are disposed helically. The ring 17 has a rim 19 which may be embedded in a rubber gasket 20 and which is clamped between the forward end of the chamber and the lens 2 by the bezel 3. A portion 14 of the reflector is bent outwardly and has a slot 15 which passes around a pin 9 to prevent angular movement of the reflector. The lamp 5 is mounted as described in Specification 548,223 on a resiliently supported socket 4, the lens normally pressing against the lamp to maintain contact between the central contact of the lamp and a supply terminal 6. A small emergency bulb 7, is supported also as described in Specification 548,223, the pin 9 engaging the auxiliary bulb and allowing the lamp to tilt and break its contacts should the lamp itself break. Apertures are provided in the reflector through which the lamps project. The bezel is sealed against removal as described in Specification 548,223.
Patent GB-2027563-A (GB)
Title: Improvements in or relating to amplitude modulation transmission systems
IPC: H03C1/04
Filed: 1978-08-08
Abstract: In an amplitude modulation transmission system a carrier signal is fed to a high power semiconductor amplifier and the amplitude modulation is produced by modulating the power supply, which drives the amplifier. It is found that this form of modulation can produce undesirable phase distortions which stem from the variation in the internal capacitance of the semiconductor device when the power supply potential is modulated. The present invention avoids the problem by detecting any phase modulation at the output of the amplifier of the transmission system and phase modulating the carrier signal before it is applied to the amplifier so as to compensate for it. <IMAGE>
Patent GB-2006529-A (GB)
Title: Switching device for a temperature or pressure switch
IPC: H01H1/18
Filed: 1978-09-28
Abstract: The cooperating contacts 9, 11 of a temperature or pressure responsive switching device having a snap switch 5 are cleaned prior to disengagement by sliding relative to each other. The snap switch 5 includes a pivotally mounted actuating lever 19, a contact spring 12 carrying a contact rivet 11 and a curved tongue 13. The curved tongue 13 is adapted to be lowered by the actuating lever 19 relative to the contact spring 12 into a first stable position, and to be raised into a second position, the contact rivet 11 being pressed against a fixed contact 9, 10 at least in one position. In order to clean the fixed contact 9, 10, on actuation of the snap switch 5 the contact rivet 11 pressed on the fixed contact 9 is displaced by the lever 19 parallel to the contact face before leaving the fixed contact 9 to commence a switching movement. <IMAGE>