baber/WOPTO huggingface dataset:
Patent GB-1365212-A (GB)
Title: Signal apparatus
IPC: H03D1/22
Filed: 1972-04-20
Abstract: 1365212 Stereophonic radio receivers MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 April 1972 [21 April 1971] 18387/72 Heading H4L  In a stereophonic radio receiver two signals in phase quadrature and of the same frequency as the pilot signal are generated and used as demodulating signals to produce discrete L and R signals.  First embodiment. Fig. 1.-A frequencydiscriminated signal E m  is produced by the conventional receiver 2 and supplied to a pilot signal responsive means 10 providing a 19 KHz output E2 in phase with the pilot signal. A phase shifter 11 provides a signal E<SP>1</SP>2 in quadrature with the signal E2. The signal E m  is applied via amplifier 3 to a multiplier 4, which may be a balanced demodulator, together with the demodulating signal E2 and the output is supplied via low pass filter 5 having a cut-off frequency of 34 KHz, to similar multiplier 6. Multiplier 6 receives the demodulating signal E<SP>1</SP>2 and the output is fed via a low pass filter 7, having a cut-off frequency of 15 KHz, to a matrix circuit 9. With appropriate filtering at 5 and 7 the resultant output E6 is shown by mathematical analysis to be equal to the signal L-R. The composite signal E m , containing signal L + R, is fed via amplifier 8 to the matrix circuit 9 and the resulting signals L 0 , R 0  are supplied via de-emphasis and amplifier circuits to the loud-speakers 14, 17 respectively. The arrangement may be constructed as an integrated circuit. Second embodiment, Fig. 2.-A frequencydiscriminated signal is supplied from receiver 2 as before and supplied to a phase detector 22, which via a low pass filter 23 and D.C. amplifier 24 controls a 76 KHz oscillator 25. The output of oscillator 25 is frequency divided at 26 to produce 38 KHz and further frequency dividers 27, 28 produce the two demodulating signals of 19 KHz, being respectively in phase and in quadrature with the received pilot signal. A phase control circuit 29, in the form of an AND gate, receives the outputs of the dividers 26, 27, 28 and provides a control signal to maintain the correct phase relationships. The output of divider 28 is supplied to the phase-detector 22 to complete the phase locked loop for the oscillator 25. The discriminator output is amplified at 3 and supplied to a multiplier 4 together with the first demodulating signal, the resultant signal being supplied to a further multiplier 6 together with the second demodulating signal, as in Fig. 1, to produce the signal L-R. This signal is supplied via a gate 32 to a matrix circuit 9 where it is combined with the L + R signal supplied via amplifier 8 to produce the L and R signals as before. An output of the multiplier 4 is fed via a low pass filter 30 and D.C. amplifier 31 to operate the gate 32 and an indicator 33 when a stereo signal of suitable strength is received. With switch 32 open the arrangement operates in the mono mode.
Patent GB-540723-A (GB)
Title: Improvements in clamping devices for the shuttering used in concrete construction
IPC: E04G17/07
Filed: 1939-06-23
Abstract: 540,723. Moulding concrete walls in situ. ADRIA SOC. ANON. June 23, 1939, No. 18391. Convention date, April 21. [Class 20 (ii)] A spacing device for shutters for use in casting concrete wall in situ, comprises a flat bar 1 perforated with staggered rows 2 of apertures at its ends, and sliding plates 4 with slotted extensions or brackets to form abutments for fixing wedges 5, the bar being surrounded by a precast concrete sleeve 12 disposed between the shutters. Ranges of adjustment are given by passing the wedges either through or outside these extensions. The Specification as open to inspection under Sect. 91 comprises also removable metal fittings 13 fitted at the ends of the sleeve, so that after the wall is set, these may be removed and the spaces filled with concrete. This subject-matter does not appear in the Specification as accepted.
Patent GB-1300419-A (GB)
Title: New morphinone derivatives and their preparation
Inventor: BUCKETT WILLIAM ROGER
IPC: C07D489/00
Filed: 1969-05-16
Abstract: 1300419 Esters of 14-hydroxydihydronormorphinone derivatives ORGANON LABORATORIES Ltd 6 May 1970 [16 May 1969 17 April 1970] 25025/69 Heading C2C Novel 3 - alkoxy - N - substituted - 14 - acyloxy - dihydronormorphinones of the formula in which R is allyl, dimethylallyl, cyclopropylmethyl or cyclobutylmethyl, R 1  is a C 1-8  aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic carboxylic acyl group, and R 2  is a C 1-6  alkyl, or their acid addition salts, may be obtained by reacting the corresponding 14- hydroxy-dihydronormorphinone with a carboxylic acid R 1 OH or a functional derivative thereof, and optionally converting the product to an acid addition salt. Pharmaceutical compositions having analgetic, tranquillizing, cough suppressing and anticonvulsant properties comprise compounds of Formula I together with a pharmaceutical carrier in forms suitable for oral or parenteral administration.
Patent GB-1351820-A (GB)
Title: Manufacture of magnetic assemblies
IPC: G11B5/133
Filed: 1971-06-01
Abstract: 1351820 Magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 1 June 1971 [2 June 1970 (3)] 18467/71 Heading G5R A magnetic head is constructed by bonding a glass layer 14 to one of two core members 10, 11, placing the core members in contact with the layer 14 defining an air gap, and then bonding the assembly together with further glass 16 of lower softening temperature. The layer 14 may be formed by fusing a powder deposited from a suspension of fine glass particles in a liquid either by sedimentation or centrifuging; electrophoretic deposition may also be employed.
Patent GB-623192-A (GB)
Title: Improvements in or relating to gramophone pick-ups
IPC: G11B3/52
Filed: 1946-06-20
Abstract: 623,192. Gramophone pick-ups. BRIERLEY, J. H. June 20, 1946, No. 18506. [Class 40 (ii)] [Also in Group XXXIX] In a gramophone pick-up a plate 11, which carries the electromechanical reproduction assembly is secured within the pickup head 12 by means of rubber elements 13, each of which is bonded at one end to a metal screw 13a and at the other end to a metal boss 13b secured respectively to the pick-up head and to the plate 11.
Patent GB-146450-A (GB)
Title: Improvements in circular knitting machines
IPC: D04B9/00
Filed: 1920-07-03
Abstract: 146,450. Hemphill Co., (Assignees of Bosworth, G. P.). June 29, 1915, [Convention date]. Circular machines. - The stitchforming and fashioning cams of a wellknown type of latch-needle machine are modified for use in connexion with spring beard needles, chiefly in that the knitting wave, instead of beginning before the centre-line of the set of knitting-cams is reached, begins at a point f<1> which is well beyond the central position of the feeder m, so that the beards stand above the run of yarn before descending to the pressing position o. At h<1> the new loops are measured off over the tops of advanced web-holders and at d<1> the needles are drawn down to their stitch-forming limit, the web-holders having retired to release the measured loops. The knitting-cams comprise, in addition to the ordinary retracting cams c, stitch cams or points d and restoring cams k, a pair of swinging guard cams f, g which may be combined with or be separate from the narrowing picks and which replace the usual upper central V-shaped cam for guarding the upper corners of the cams c. Swinging arms 15 carrying, the members f, g are drawn normally downward by springs 16 into the position shown to the left of Fig. 9, resting on the top of the pick block. The needles, in passing in the direction of the arrow x, lift up the member g, and are deflected by the member f to the pressing position o. After continuing in an horizontal direction a short distance, they are passed down to the loopmeasuring position h', at which level they are retained bv the horizontal surface h until the stitch point d is reached. On reversal of the needlecylinder, the first needle of the heel and toe set to be lifted to inoperative position strikes the shoulder f<2> of the member f, or of a separate narrowing pick, and is thereby raised, while the remaining needles follow on below the member f as in usual narrowing practice, and are deflected by the member g. The stitch ring 13 is grooved vertically at 13<1> to support the needles against lateral displacement, the upper parts of the grooves being formed in the faces of the walls which lie between and guide the web-holders, while the lower parts extend across the solid portion of the stitch ring. The arrangement of pressing and associated mechanism described in Specification 146,451 is adopted.
Patent GB-191762-A (GB)
Title: Improvements in means for treating liquids with chemical reagents
IPC: C02F1/68
Filed: 1921-07-08
Abstract: 191,762. Paterson, W. July 8, 1921. Mixing solids and fluids with fluids in flow.-Relates to apparatus for treating liquids with chemical solutions or powdered reagents of the kind in which the main flow is measured by being passed through a Venturi tube or over a weir &c., and in which such measuring means is utilized to proportion the reagent to the main flow of the liquid, and consists in providing apparatus of the above kind, in which the main flow measuring means controls the proportioning of the reagent without, however, having any direct connection with the r eagent adding device. As shown, water to be treated with a solution of aluminium sulphate or powdered chalk, is passed through the Venturi tube a, which, through the medium of floats and pivoted levers, actuates a valve b which controls the flow of a minor body of water into a reciprocating or oscillating meter c. The meter actuates a four-way valve f which controls the admission of pressure water into a cylinder d having a plunger e which actuates a feed-screw e<1> which discharges a definite quantity of powdered reagent at each stroke of the plunger. When a chemical solution is used, the plunger operates a pump e<2> which communicates with a tank containing the solution and discharges a definite volume of the solution at each stroke of the plunger. The rate of addition of the reagent may be varied by means of a divider or the like which deflects a portion of the minor flow of water from the meter. The meter may control electric or other means for effecting the addition of the reagent.
Patent GB-613622-A (GB)
Title: Method for production of wet-strength paper
IPC: D21H17/49
Filed: 1946-06-20
Abstract: A water-soluble partial condensation product of 2 to 3 mols. of form-, acet-, butyr-, furfur-or benzaldehyde with 1 mol. of a carbamide such as urea, thiourea, monoalkyl-, monoaryl-or monoacyl-substituted urea, and up to 1/4 mol. of guanidine, as a powder or solution, is added to pulp at pH = 6 to 6.8, or is applied after the pulp has been formed into paper.  Drying the felted web at usual temperatures makes the resin infusible.  An example specifies heating 2 mols. of urea and 4.4 of formaldehyde at pH = 7.0 and at 80 DEG  C. for 15 mins. whilst stirring, adding 0.14 mol. of guanidine carbonate and adjusting the pH value to 5.5 by formic acid and heating to refluxing temperature for 7 hours.
Patent GB-704447-A (GB)
Title: Improvements in or relating to ventilating devices
IPC: F24F1/01
Filed: 1952-07-23
Abstract: 704,447. Ventilators. INTERNATIONAL ANEMOSTAT HOLDING CO., Ltd. July 23, 1952 [July 23, 1951], No. 18698/52. Class 137 A ventilator for a room, or other enclosed space, of the type which utilizes a stream of fresh air to induce room air into the ventilator and mixes it with the fresh air for delivery to the room, comprises a casing A having a fresh air supply chamber 15 with outlet nozzles 16, a conduit 17 with its inlet end in alignment with the nozzles 16 and its outlet end communicating with an air diffuser B, and a room inlet C. Fresh air is delivered from a supply pipe into the chamber 15, formed between an end wall 11 and a partition wall 19, and is discharged in jets from the nozzles 16 into the restricted throat 24 of the C-shaped conduit 17 which is formed between a plate 21 on a rear wall 13 of the casing and a partition wall 20. The fresh air being accelerated through the throat 24 induces air from the room to enter the inlet C and pass into a cylinder 18 to mix with fresh air being delivered from nozzles 16. A perforated plate 32 ensures an equal supply of air to each nozzle 16, the supply being regulated by a pivoted flap 33. In a modification, Fig. 4, the fresh air chamber comprises a cylinder member 15 having a longitudinal slot 35, the air outlet being in the form of a pair of flanges 36 which extend on opposite sides of the slot and are adjustably spaced from each other by means of bolts 37. In an alternative construction, Fig. 6, two rows of nozzles 16 are provided and the fresh air enters by way of louvred openings 18. Where the apertures of the nozzles are not adjustable the air distribution to the individual nozzles is controlled by means of a perforated diagonal plate, the size of the openings in the plate being varied along its length. Alternatively a non- perforated plate may be used, the spaces between it and the adjacent walls of the chamber 15 progressively decreasing towards the closed end of the chamber. An alternative method of controlling the delivery of air to the nozzles consists in providing a series of transversely spaced discs in the chamber 15 the diameters of the discs being progressively increased as they approach the closed end of the chamber.
Patent GB-153082-A (GB)
Title: Improvements in apparatus for moulding slag or other material whilst in a molten condition
IPC: B28B1/54
Filed: 1919-07-29
Abstract: 153,082. Williams, S. July 29,1919. Endless-chain machines; moulding slag; pressure-producing mechanism.-In apparatus for moulding slag or other material whilst in a molten condition, an endless chain conveyer a' carrying plates A, provided with projecting surfaces shaped according to the panels or recesses to be produced in the moulded slag &c., travels in conjunction with a series of moulds C mounted on another endless chain conveyer c<1>, the plates A closing the moulds C and impressing the contents of the moulds until they have solidified to the required consistency. The rollers a<2> of endless convever c<1> are guided by bars a", a<12>. The bottoms of the moulds may be provided with recessing or panelling plates C<1> so that the top and bottom of the moulded article may be panelled or recessed.
Patent GB-1418180-A (GB)
Title: Xerograhic charging apparatus
IPC: G03G15/02
Filed: 1973-04-18
Abstract: 1418180 Corona charging apparatus RANK XEROX Ltd 13 April 1973 18769/73 Heading H1X [Also in Division G2] A corona charging apparatus comprises a corona wire and a grounded, conductive shield which partially surrounds the wire and either is movable relative to the wire or includes a part which is so movable. Mounts for shields and parts of shields are described.
Patent GB-1430273-A (GB)
Title: Arrangement for diversity reception
IPC: H04B7/08
Filed: 1973-04-18
Abstract: 1430273 Diversity reception TAVKOZLESI KUTATO INTEZET 18 April 1973 18832/73 Heading H4C Diversity reception apparatus is designed so that it can be used in a number of different diversity systems, e.g. space and/or frequency diversity and pre- or post-detection switching systems. As shown in Fig. 4, the I.F. signals comprising a base band signal, e.g. a video signal, a pilot signal and noise information from two diversity receivers are supplied via amplifiers 14, 15 to a changeover switch 23 and also to demodulators 16, 17 respectively. The outputs of the demodulators are supplied to a unit 18 which supplies the pilot signal and noise spectrum of the two channels to monitoring circuits 19, 20 respectively, and the video signals to outputs A, B, respectively, which are connected via removable links to a changeover switch 22. The pilot and noise level information from circuits 19, 20, and a signal # showing whether the useful signal is a TV signal or not are supplied to an evaluating and switching control circuit 21 which supplies control signals to the switches 22, 23, respectively. In the event of a TV signal, if the signal/noise ratio is such that changeover is to be effected, it is delayed until the next picture signal to avoid tearing or other interference with the picture. Alternatively, the demodulated baseband signal k, l may be supplied via removable links D1 to the unit 18. In another arrangement, the baseband signals k(u) and l(v) are supplied via links D2 to the switch 22 which is controlled by the I.F. signals supplied via amplifiers 14, 15 as before. A dual power supply 24 is provided with automatic changeover to the standby supply if a power failure occurs. Circuits 25 provide monitoring and remote control of the system.
Patent GB-820789-A (GB)
Title: Process for the production of peptides
IPC: C07K1/10
Filed: 1956-06-19
Abstract: The invention comprises (1) the preparation of peptides by reacting an N-trityl-amino acid with an ester of an amino acid in the presence of dicyclohexyl-carbodiimide, in solution around 0 DEG  C., destroying the excess of diimide with acetic acid, removing the precipitated dicyclohexyl-urea, hydrolysing the ester group of the resulting peptide and finally removing the N-trityl group by heating with aqueous acid; and (2) certain of the tritylated products, viz. N - trityl - methionyl - glycine, N - trityl - tryptophyl-glycine and N:N1-ditrityl-histidyl-glycine and esters thereof, and also N:N1-ditritylhistidyl-leucine. The preferred solvents for the reaction are methylene chloride and chloroform.  Examples show the preparation of the following: (1) DL-methionyl-glycine via N-trityl-DL-methionyl-glycine and its ethyl ester; (2) DL-tryptophyl-glycine via N-trityl-DL-trytophyl-glycine and its ethyl ester; (3) L-histidyl-glycine (see Specification 820,790) via N:N1-ditrityl-L-histidyl-glycine and its ethyl ester; (4) L-histidyl-L-leucine via N:N1-ditrityl-L-histidyl-L-leucine and its methyl ester.  Ethyl glycinate is obtained from its hydrochloride by treatment with diethylamine in chloroform.  Methyl L-leucinate is obtained similarly.
Patent GB-1079293-A (GB)
Title: A fuel system for gas turbine engines
Inventor: DAVIES DAVID OMRI
IPC: F02C7/22
Filed: 1964-05-07
Abstract: 1,079,293. Gas turbine engine fuel systems ROLLS ROYCE Ltd. March 26, 1965 [May 7, 1964], No. 18987/64. Heading FIG. A gas turbine engine fuel system comprises a fixed displacement main pump 16 fed from a tank 10 by a backing pump 12 (which may be a gear pump or a centrifugal pump) and delivering to a main burner or burners 32. A fixed displacement pilot pump 18 delivering to a.pilot burner 26 is connected in series with the pump 16. Preferably, pumps 16, 18 are gear pumps. Excess fuel is spilled back to the inlet side of pump 16 by means of a fuel control unit 30 having a spill valve 33. The valve 33 is controlled by the pressure drop across the unit 30 (this pressure drop being applied via conduit 37 to the closed end of the valve) and also by centrifugal governor weights 35 rotated by the engine. When the engine is to be started, a valve 38 can be closed by turning a cam 52 so that the output of the main pump 16 is directed via a non-return valve 56 to the pilot burner 26. Since there is then no pressure drop across the unit 30, the valve 33 returns to the closed position to avoid spill-back of fuel. If, however, the delivery pressure of the main pump 16 becomes excessive, it opens valve 38 against the action of a spring 46 to allow fuel to flow to the main burners 32. This flow produces a pressure drop across the control unit 30 to cause the spill valve 33 to reopen. If the engine overspeeds, emergency governor weights 72 open a further spill valve 68. This valve may instead be connected between the conduits 24 and 36 downstream of the control unit 30. If the pressure upstream of the pilot burner 26 becomes excessive, a non-return valve 60 opens to divert flow from conduit 24 to conduit 36. The valve 38 may be disposed upstream of the connection to conduit 58 (or even upstream of the control unit) whereby fuel diverted through the non-return valve 60 can pass to the main burners 32 even when the valve 38 is closed. Interconnected shut-off cocks 74 are provided. Instead of being connected in series with the main pump 16, the pilot pump 18 may have its inlet connected directly to the outlet of the backing pump 12, and the fuel spill conduit may be connected to the inlets of both the pumps 16 and 18.
Patent GB-120817-A (GB)
Title: Improvements in Means for Starting or Reversing Internal Combustion Engines.
Inventor: BLACKSTONE GEORGE MILLS
IPC: F01L13/00
Filed: 1917-12-22
Abstract: 120,817. Blackstone, G. M., Carter, F., and Carter, E. Dec. 22, 1917. Starting; reversing.-In a starting or reversing valve-gear, a series of levers is actuated from a second cam-actuated series through distancepieces, which can be moved into or out of engagement with the levers. In the form shown, the valve levers j<1> are actuated from the cam-actuated levers a<1> through two sets of distance-pieces i<1>, i<3> carried by a rock-shaft i. The distancepieces i<1>, i<3> serve respectivelv to actuate the valves for starting and working. The cam shaft c<2> carries separate forward and reverse cams, and the levers a<1> are carried by a shaft a longitudinally movable for bringing the levers into engagement with the forward and reverse cams; the ends a<7> of the levers a' are broad enough to engage the dis. tance-pieces in either position of the shaft a. A cam i<9> on the rock-shaft i holds the exhaust valve open when the shaft is in neutral position with the distance-pieces out of action. A handle for actuating the shaft i is connected to a lever which opens a valve supplying compressed air for starting when the shaft i is in starting position.
Patent GB-925157-A (GB)
Title: Circuit arrangement for effecting automatic frequency readjustment in television receivers
IPC: H04N5/50
Filed: 1961-05-26
Abstract: 925,157. Radio receiving circuits; automatic frequency control systems; frequency discriminators. STANDARD TELEPHONES & CABLES Ltd. May 26, 1961 [June 29, 1960], No. 19121/61. Class 40 (5). In a television receiver of the vestigial sideband type provided with automatic frequency control, the video carrier being normally automatically adjusted to fall half way down the sloping side of the I.F. passband characteristic, this carrier is automatically shifted to lie higher up the response curve when the signal to noise ratio becomes poor so as to obtain the optimum performance possible in these circumstances. Across the secondary of the frequency discriminator there is connected via blocking capacitors 2, 3, Fig. 1, a voltage variable reactance comprising a point contact diode 1, the reactance of which is varied by a voltage derived from a source 6 over resistors 4, 5. A television receiver comprises preliminary stages 2, Fig. 2, I.F. stages 3 and video detector and video frequency stages 4 feeding picture tube 11. The local oscillator 8 is automatically controlled in frequency by discriminator 7, and automatic gain control is applied to stages 2, 3 from an automatic gain control voltage generator 5. According to the invention, the automatic gain control voltage for stage 2 is also applied via resistor 9 and delay diode 10 to a buffer stage 6, the output of which controls the frequency to which the discriminator 7, which may be as in Fig. 1, is tuned. Delay may be produced by the control voltage from source 5 changing sign (Fig. 3, not shown), or if the control voltage is always of the same sign a delay bias may be applied to the diode 10. Alternatively, diode 10 may be omitted and delay produced by suitable biasing of the buffer stage 6.