baber/WOPTO huggingface dataset:
Patent GB-764685-A (GB)
Title: Process for recovering spent rolling oil
IPC: C11B13/00
Filed: 1953-09-04
Abstract: Fatty oil is recovered from the effluent cooling liquid, containing a fatty rolling oil and water, that has been used in the cold rolling of steel strip, by separating the sludge (which contains the oil emulsified with water and contaminated with impurities, including metallic iron), adding mineral acid to the sludge maintaining the mixture at an elevated temperature until the emulsion is broken and a water-and oil-insoluble precipitate is formed and then separating the oil.  The mineral acid reacts with the metallic iron forming nascent hydrogen, which reduces the oil-soluble or colloidal ferric-compounds, present as impurities, to oil-insoluble ferrous compounds.  The fatty oil may be palm oil, other natural fatty oil, animal fat or an artificially compounded fatty oil mixture such as a blend of palm oil and wool fat, while the mineral acid may be sulphuric acid, hydrochloric acid or a mixture of sulphuric and hydrochloric acids.  The sludge deteriorates rapidly after separation from the effluent cooling water, so that the oil must be recovered promptly from the sludge.  However, deterioration of the sludge can be inhibited by mixing 1-2 per cent by weight of mineral acid with it, or by extracting it with a fat solvent (e.g. a petroleum fraction of boiling range 100 -130 DEG C.) to remove the metallic iron.  The sludge may then be stored before carrying out the recovery process according to the invention, but if the iron has been removed it must be restored when the recovery process is carried out, or the inhibited sludge must be blended with fresh sludge.  The recovered oil may be treated with fullers earth, active carbon or silica-gel to improve its colour and odour. Apparatus for carrying out the process of the invention is described.
Patent GB-976527-A (GB)
Title: Improvements relating to the manufacture of insulated wire
IPC: H01J9/08
Filed: 1963-06-20
Abstract: 976,527. Cathode heaters. SYLVANIA ELECTRIC PRODUCTS Inc. June 20, 1963 [June 20, 1962], No. 24617/63. Drawings to Specification. Heading H5H. A heating element for an indirectly-heated cathode comprises a core of refractory wire, e.g. tungsten, molybdenum or alloys thereof, a layer of insulating material, e.g. aluminium oxide, and a barrier film of noble metal, such as gold, platinum or rhenium, between the wire and the insulating layer. The film of noble metal preferably amounts to from 0.2% to 4% by weight of the wire. In the process of forming the heating element, the barrier film may be vapour-deposited, electroplated, or otherwise affixed to the refractory wire, which is then coated by a spray, immersion, cataphoretic, drag or other depositing process with a volatile binder suspension containing the insulating material. Subsequently the wire is heated to volatize the binder constituents, harden the insulating layer, and adhere the layer to the barrier film. During the fabrication of the actual cathode assembly, the element is heated to a temperature sufficient to vaporize the noble metal which disperses into the insulating layer and deposits on the inner surface of the cathode sleeve, thereby rendering the insulating layer relatively inert and lowering the field emission characteristics of the said inner surface.
Patent GB-245535-A (GB)
Title: An improved moulding device for the production of rotary sharpening apparatus
IPC: B24D18/00
Filed: 1924-10-17
Abstract: 245,535. Watt, J. A. D. Oct. 17. 1924. Moulding rotary hones &c.-A device for moulding hones having raised lands or tables of felt, leather, rubber, metal, &c. comprises a mould or container, means for positioning the lands and the spindle therein, and means for admitting plastic material thereto. Figs. 2 and 5 show one form of apparatus in which the mould 18 rests upon a shoulder 16<a> of a tubular member 16 carrying helical prongs 17 between which the lands 26b are positioned. The mould is closed by a cover 19 recessed at 19<a> to engage the prongs 17 and furnished with a boss 19b adapted to centre the spindle 21. Plastic material 27 is introduced through an aperture 20 in the cover and, during moulding, the lands may be pressed against the mould 18 by a helical spring. The moulded article is ejected by a plunger 23 operated by arms 24. Fig. 8 shows a modification in which the mould 30 is rifled and engages a rifled member 28, the lands being positioned between the riflings of the container. The mould is positioned for the moulding operation by a pin 32 engaging a recess 28<b> in the member 28, and is closed by a cover 33 having a boss 33a accommodating a member 34 for centering the spindle. The moulded article is ejected by withdrawing the pin 32 and depressing the mould. The described apparatus may be used to form hones composed of two or more plastic substances, e.g. a core of plastic material covered by a layer of plastic material impregnated with abrasive, either by casting the outer layer around a pre-formed core or by casting the outer layer around a sleeve inserted within the mould and, when set, withdrawing the sleeve and introducing the core material.
Patent GB-1381567-A (GB)
Title: Engine output measuring device
IPC: G01L3/24
Filed: 1973-05-23
Abstract: 1381567 Measuring engine output electrically NISSAN MOTOR CO Ltd 23 May 1973  [26 May 1972] 24684/73 Heading G1N The output or torque of an I.C. engine is determined by providing a signal representing a proportional constant K of the engine from analogue signals representing the engine speed n and the intake manifold vacuum p, and multiplying this signal by a signal representing the weight of intake air Wa to provide an input signal dependent upon engine output or torque. As shown, the signal representing the constant K is computed by a function generator 3, Figs. 4-6 (not shown), responsive to the engine speed signal to provide one component K' of the constant K a function generator 4, Figs. 7-9 (not shown), responsive to the intake vacuum signal to provide the other component K" and a summing device 5. The intake air signal is computed from signals representing engine speed, intake air vacuum, and intake mixture temperature. The graphs of Figs. 1 and 2 (not shown), show how K varies with engine speed and intake vacuum.
Patent GB-1215333-A (GB)
Title: Improvements relating to inverter starting circuit
IPC: H02M7/53846
Filed: 1968-05-23
Abstract: 1,215,333. Starting inverters. ROTRON Inc. 23 May, 1968 [31 May, 1967], No. 24728/68. Heading H3T.  In an inverter oscillator of the type having at least two switching devices, for example transistors, 10, 12, Fig. 1, connected to a transformer winding 14 a starting circuit comprises a further switching device, for example a transistor 30, whose main current path is between one end 18 of the D.C. source 20 and the base of the transistor 10, and whose base circuit is arranged to make transistor 30 temporarily conduct upon initial connection of the source 20 whereby transistor 10 is made to conduit. The initial connection produces a D.C. circuit from terminal 21 of the source through a portion of the winding 14 to the emitter circuit of the starting transistor 30, the voltage drop across a resistor 26 in this circuit causing transistor 10 to conduct. During the first half cycle of oscillation thus initiated, a capacity 13 in the base circuit of transistor 30 charges to eventually render the transistor substantially non-conducting. During the next half cycle when transistor 10 is off and transistor 12 conducts, a feedback winding portion 40 applies a positive voltage through a diode 42 and Zener diode 44 to charge capacitor 38 and to thus cut off transistor 30, which is held cut off during the half cycles between the appearances of the said positive voltage by the time constant of the resistor 36 and capacitor 38. Thus the starter circuit consumes current only during starting. More effective initial turn-on of transistor 30 is produced by inclusion of a breakdown diode 32. In a modification (Fig. 2, not shown) the oscillator transistors (10, 12) are operated in common collector mode instead of common emitter mode, and their base feedback windings (22, 24) are not connected to the winding (14). The starter circuit operates in basically the same manner as before. In a bridge type oscillator (Fig. 3, not shown) in which pairs of transistors (50, 52 and 54, 56) alternately conduct through the transformer winding (14), and secondary feedback windings (58, 60, 62, 64) are connected in the emitterbase circuits of each transistor the starting circuit (30, 36, 38) in the base circuit of transistor (50) initially makes transistor (50) conduct, the current path of the latter being completed through the winding (14), the base winding (60) of transistor (52), a resistor (68), diode (70), resistor (72), and the starting transistor (30). The voltage drop across the resistor (68) causes transistor (52) to conduct, and hence the pair (50, 52) is rendered conductive to give the first half-cycle. Upon switchover to the second pair (54, 56) to produce the second half cycle, the positive voltage from a winding (40) cuts off the starting transistor (30) as before.
Patent GB-338532-A (GB)
Title: Improvements in or relating to engines, motors, pumps, or the like
IPC: F01B17/00
Filed: 1929-08-14
Abstract: 338,532. Gilbert, W. V., and Crisp, C. Aug. 14, 1929. Revolving-cylinder pumps.-An engine or pump comprises cylinders 1 revolving about a shaft 2, piston 3 reciprocating within the cylinders and revolving therewith, and abutments 10 revolving about a second shaft 11, the pistons bearing on these abutments during the working strokes by means of rollers 8; the pistons and abutments move apart during the synchronous rotation of the two shafts. The outward movement of the pistons is limited by bars 4 on the cylinders or by slots 20, Fig. 2, in the cylinders engaging gudgeons 19 on the pistons. The abutments may have plain surfaces 10 as shown in Fig. 1 or the movement of each piston during its in and out stroke may be constrained between two surfaces 10, 10<a>, Fig. 2; these surfaces may be formed on a plate 10<b> adjustable on the carrier 9 for variation of the piston stroke. Instead of the abutment member consisting of a single plate as described it may be in the form of cylinder piston elements similar to those described, the pistons in the two elements carrying bowls which cause the movement of both sets of pistons.
Patent GB-1520866-A (GB)
Title: Paper machine roll presses
IPC: D21F3/04
Filed: 1977-06-14
Abstract: 1520866 Paper-making roll presses ESCHER WYSS Ltd 14 June 1977 [14 June 1976] 24830/77 Heading D2A A paper machine roll press comprises a suction roll 4 which with a felt 6 serves to transfer a web A from a wire 1; a take-off roll 7 which transfers the web from the roll 4; and a further press roll 14 with a felt 15 this being a hydrostatic flexure adjusting roll having a fixed beam 16 and a rotatable shell 17, the shell preferably having a recessed surface. Another press roll 24 of the flexure adjustable type may be applied to the take-off roll 7.
Patent GB-173735-A (GB)
Title: Process for purifying saccharine juices or liquids
IPC: C13B20/12
Filed: 1921-09-20
Abstract: 173,735. Soc. Ricard, Allenet, et Cie. Jan. 6, 1921, [Convention date]. Food for animals.-Saccharine liquids, such as beet juice, milk serum, and apple juice are purified by adding a soluble alginate and precipitating alginic acid with an acid or calcium alginate with lime. The precipitate carries down the impurities and is separated by filtration and used as a food for animals.
Patent GB-584174-A (GB)
Title: Improved heat exchanger
IPC: F28F19/01
Filed: 1944-12-13
Abstract: A porous mass of sintered metal powder for use in a heat-exchanger which also serves as a filter for one of the liquids, is formed by filling a frame through which the tubes of the heat-exchanger extend, with a mixture of powdered metals, and placing the whole of it in a sintering furnace.  The metals employed may be copper and tin in the ratio of 9 to 1, copper and nickel, copper and zinc, or iron containing a little copper and phosphorus.
Patent GB-321487-A (GB)
Title: Improvements in or relating to sanitary napkins
IPC: A61F13/15
Filed: 1928-08-30
Abstract: 321,487. Johnson & Johnson (Gt. Britain), Ltd., (Johnson & Johnson). Aug. 30, 1928. Catamenial appliances.-A sanitary napkin or the like consists of an absorptive pad or filling having a separating element or elements of semiwaterproof or perforated material extending to the edges of the pad to defer seepage action and to promote diffusion throughout the entire area of the pad. As shown in Fig. 3, three separators 9 are used and diffusion throughout the bottom layer is ensured by the waterproof backing 7. In Fig. 5, one separator is used, and the backing 11 is extended over the edges 12 of the pad and has pervious wings 13 which are folded over the top. Lightly waxed crepe cellulose paper is suitable for the separators, and the absorbent material may be crepe cellulose paper, cotton, wood or cellulose pulp, or mixtures thereof. The napkin is wrapped in the usual gauze wrapper.
Patent GB-675454-A (GB)
Title: Improvements in or relating to time-multiplex pulse modulation signalling systems
IPC: H04J3/16
Filed: 1950-10-13
Abstract: 675,454. Multiplex pulse code signalling. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 13, 1950 [Oct. 17, 1949], No. 25028/50. Class 40 (v). In a time division pulse multiplex communication system, in which the time interval between the pulse of one channel and that of the previous channel characterizes the signal to be transmitted in the former, the mean time interval for each channel is increased when that channel is made busy. At the receiver a warning device is thereby operated. A sine wave generator 30, Fig. 2, at the transmitter controls a pulse generator 29 operating at channel group recurrence frequency. These pulses trigger a flip-flop synchronizing pulse generator 19, the pulses from which are of greater duration than the channel pulses. The trailing edge of the synchronizing pulse triggers the first channel pulse generator and modulator 20, of the series 20 ... 27, each of which triggers the next. Each of these channel circuits such as 21 comprises a flip-flop valve pair 31, 31<SP>1</SP> producing a pulse, the duration of which is modulated by valve 48, fed from microphone 44 and having an anode resistance 321 which is common to valve 31<SP>1</SP>. The duration-modulated pulse at the anode of valve 31 is fed to the next modulator 22, which is triggered by its trailing edge, and is also differentiated and clipped in circuit 51, 52, 53, the resulting trailing edge pulse being amplified in valve 54 to provide the transmitted pulse fed to the common output conductor 65. The synchronizing and channel pulses are passed to the radio transmitter 66, 67, 68. When a channel is idle, the microphone switch 74 is open and part of the cathode resistance 47 of the modulating valve 48 is short-circuited. The pulses produced by circuit 21 are thus of minimum length. When the channel is brought into operation, the microphone switch 74, in addition to connecting the microphone 44 to valve 48, also completes the circuit of relay 69 to remove the short-circuit on part of the resistance 47. The mean duration of the pulses generated in circuit 21 is thereby increased. Alternatively, the relay may connect a condenser in parallel with the time-constant condenser 33 of the flip-flop circuit, or a resistance in series with resistance 34. At the receiver, the channel pulses at the output of the radio circuit 85, 86, Fig. 3, are passed to the channel demodulators 88 ... 95, the first of which, 88, is triggered by the synchronizing pulses derived from the separator circuit 98. The demodulator flip-flop, 97, 97<SP>1</SP>, is restored by the next channel pulse and at the same time triggers the next demodulator, producing duration modulated pulses which are fed to the reproducer 103. A low-pass filter 109, 110 feeds a threshold relay 104 which responds to the increased signal output when the channel is brought into operation to energize the signal lamp 107.
Patent GB-1493602-A (GB)
Title: Semiconductor devices
IPC: H01L29/864
Filed: 1975-08-27
Abstract: 1493602 Semiconductor devices DEFENCE SECRETARY OF STATE FOR 27 Aug 1975 [5 June 1974] 25044/74 Heading H1K A "distributed diode", e.g. for use in an IMPATT travelling wave amplifier or an electron beam scanned device, in which an electromagnetic wave propagates along the longitudinal axis of the diode parallel to the junction, comprises a planar junction 27 between layers 24, 29 supported by a substrate 28 having anisotropic resistivity by virtue of discrete reduced resistivity inclusions 30 extending through the thickness of the substrate. In the device shown the substrate 28 is of N-type Si with N<SP>+</SP>-type P-diffused regions 30 formed therein prior to deposition of N-type layer 29 and B-diffusion to form P<SP>+</SP>-type layer 24. Au electrodes 20, 22 complete the diode. The inclusions 30 may, in plan view, comprise bars extending across the width of the substrate 28, chevrons, or spaced circular cross-section columns. The substrate 28 may alternatively be P-type.
Patent GB-921423-A (GB)
Title: Improvements in and relating to synthetic resin coating and like compositions and constituents thereof
IPC: C08G18/38
Filed: 1959-07-21
Abstract: Reactive compositions contain (1) urethanes of the general formula <FORM:0921423/IV(a)/1> wherein the aromatic nucleus may be further substituted by a lower alkyl substituent and R1 and R2 are aliphatic and/or aromatic radicals which may be further substituted by nonreactive substituents or R1 or R2 is an alkyl radical containing one or more further urethane groups and (2) either (a) N-aminoalkyl-imidazolines containing at least two active amine hydrogen atoms, the alkyl residues of which may contain or be interrupted by further amino groups, obtained by reaction at elevated temperatures of aliphatic polyamines with saturated and/or unsaturated and/or polymerized unsaturated fatty acids or dicarboxylic acids, any of which acids may be substituted by amino groups or (b) N-aminoalkylamides containing at least two active amine hydrogen atoms obtained by reaction at moderately elevated temperatures of aliphatic polyamines with saturated and/or unsaturated and/or polymerized unsaturated fatty acids or dicarboxylic acids, any of which acids may be substituted by amino groups.  The two components are usually combined as solutions in organic solvents.  In the examples the components utilized are urethanes the reaction product of 1 mol. of trimethylol propane and 3 mols. of 2:4- or 2:6-toluylene diisocyanate (or a mixture of these isomers) followed by reaction with 3 mols. of phenol; a similar product prepared from isothymol instead of the phenol; the reaction product of 1 mol. of 2:4- or 2:6-toluylene diisocyanate and 2 mol. of phenol; the bisurethane obtained from 2:4- or 2:6-toluylene diisocyanate and ethanol N-aminoalkylimidazolines the bis-imidizoline obtained at 310 DEG C. from triethylene tetramine and di- and trimerized tall oil fatty acid N-aminoalkylamides the reaction product at 130 DEG -160 DEG C. of diethylene triamine and di- and tri-merized tall oil fatty acid; the reaction product of diethylene triamine and 9-amino-stearic acid; the reaction acid; the reaction product of diethylene triamine and a -nonyl sebacic acid or a -octylnonane dicarboxylic acid; the reaction product of diethylene triamine and di- and tri-merized linseed oil fatty acid.  Specified solvents are methyl isobutyl ketone, methyl ethyl ketone, ethylene glycol monoethyl or monomethyl ether, xylene, toluene, chlorobenzene, methylene chloride, cyclohexanone, ethyl or amyl acetate, ethanol and isopropanol-usually in the form of mixtures in the final composition as each component is dissolved in a different solvent.  An epoxy resin such as a bis-phenol A-epichlorohydrin reaction product may be incorporated into the composition.  The compositions may be pigmented, e.g. with titanium dioxide.  Uses: Coating compositions, adhesives and cast-moulded products.
Patent GB-900866-A (GB)
Title: Improvements in respiration machines
Inventor: MANLEY ROGER EDWARD WENTWORTH
IPC: A61M16/00
Filed: 1960-07-19
Abstract: 900,866. Respiratory apparatus. BLEASE ANAESTHETIC EQUIPMENT Ltd. July 19, 1960, No. 25167/60. Class 81 (2). An artificial respiration or anµsthetic machine comprises two bellows 2, 4 communicating through a tube 6, means 20, 26 operated by each bellows successively to alternately close and open a valve 10 in the tube, an inhalation valve 32 between the second bellows 4 and the patient and an exhalation valve 34, the inhalation and exhalation valves being controlled by pressures in the tube. With the valve 10 closed, respiratory gas supplied continuously under pressure inflates the first bellows 2 so that a frame 12 on the free end of the bellows engages an adjustable movable contact 20 which opens the valve 10. Gas then flows through a variable restriction 72 and the tube to inflate the second bellows 4. In the inhalation valve 32, an outlet tube 30 from the second bellows is controlled by a plate 38 in a sealing diaphragm which is operated by a spring-urged diaphragm 42, the space between the diaphragms being connected to the tube 6 so that, as the second bellows is being inflated, the fall in pressure in the tube and space allows the plate to seat against the outlet tube, thus closing the inhalation valve. The exhalation valve 34 includes a diaphragm 58 which is urged by a spring 66 away from an exhalation tube 56 but towards the exhalation tube by pressures prevailing in the tube 6. As the second bellows is inflated the fall in pressure in the tube 6 permits the exhalation diaphragm 58 to be held away from the exhalation tube for exhalation. Exhaled gases pass to a breathing bag 64 and through a one-way valve 62 to atmosphere. Near maximum inflation of the second bellows an adjustable stop 24 on the free end of the bellows engages a movable contact 26 which closes the valve 10. Pressure in the first bellows and the tube 6 and inhalation and exhalation valves rises when the valve 10 is closed so that the exhalation valve closes and the inhalation valve opens shortly afterwards. The first bellows is biased by a spring 14 to a pressure of 90- 100 cms. water, the second bellows by a jockey weight 18 to a pressure of 10-30 cms. water, the inhalation valve to an opening pressure of 65-75 cms. of water and the exhalation valve to a closing pressure of 45-50 cms. water. A two-way cock 8 in the tube 6 enables the second bellows and the inhalation valve to be by-passed for manual operation.
Patent GB-1509115-A (GB)
Title: Vehicle cab with compartment for air cooling and heating equipment
IPC: B62D33/06
Filed: 1976-06-17
Abstract: 1509115 Axial-flow fans CATERPILLAR TRACTOR CO 17 June 1976 [16 Oct 1975] 25214/76 Heading F1C [Also in Division F4]  A vehicle cab comprises an operator compartment and a separate compartment 36 containing air heating and cooling equipment for cooling or heating air to be supplied to the operator compartment, a pivotally mounted door 24 for providing access to said equipment, and a fan 38 which forms part of said equipment mounted on the door 24 for movement out of the compartment 36 as the door 24 is opened, so that the fan 38 and the remainder of the equipment are more readily accessible when the door 24 is open. In the form shown, the door 24 carries two axial-flow fans 38, 40 associated with lowered openings 42, 44. Each fan is detachably mounted on the door 24 by a pair of clamping members connected together by bolts 56' or 58 and each carrying two legs 60, 62 bolted to door 24. The door 24 is detachably pivotally mounted and the fans 38, 40 include detachable electrical connections, so that the door and fan assembly can be removed from the cab.