baber/WOPTO huggingface dataset:
Patent GB-879629-A (GB)
Title: Improvements in or relating to stable 6-demethyl-tetracycline antibiotic compositions
IPC: A61K31/65
Filed: 1959-11-30
Abstract: A tetracycline antibiotic is solubilised in aqueous solution according to the parent Specification, but is characterised in that the tetracycline antibiotic is a 6-demethyl tetracycline or a soluble salt thereof.  Specified are 6-demethyl tetracycline, 6-demethyl-6-deoxytetracycline and 7-chloro-6-demethyltetracycline. In accordance with the said parent Specification, the 6-demethyl tetracycline is solubilised by addition of a soluble non-toxic source of alkaline earth ions and a pyridine derivative having the formula:- <FORM:0879629/IV (b)/1> wherein R is hydrogen or a N-alkylcarbamyl, N-alkanolcarbamyl, hydrazinocarbonyl, hydroxyl, hydroxyalkyl, alkoxycarbonyl or carboxyl radical or a salt of a carboxyl group with a non-toxic metal; R1 is a hydrogen or methyl group and R11 and R111 are each hydrogen or a hydroxymethyl group.ALSO:A tetracycline antibiotic composition of enhanced solubility and stability according to the parent Specification is characterized in that the tetracycline antibiotic is a 6-demethyl tetracycline or a soluble salt thereof. Specified are 6-demethyl tetracycline, 6-demethyl-6-deoxytetracycline and 7-chloro-6-demethyl tetracycline.  In accordance with the said parent Specification the 6-demethyl tetracycline is mixed with a soluble non-toxic source of alkaline earth ions and a pyridine derivative having the formula <FORM:0879629/VI/1> wherein R is hydrogen or a N-alkylcarbamyl, N - alkanolcarbamyl, hydrazinocarbonyl, hydroxyl, hydroxyalkyl alkoxy carbonyl or carboxyl radical or a salt of a carboxyl group with a non-toxic metal; R1 is hydrogen or a methyl group and R11 and R111 are each hydrogen or a hydroxy methyl group.  In an example, an aqueous solution of pH 3.3 to 4 is prepared by dissolving 7 - chloro - 6 - demethyltetracycline hydrochloride, magnesium gluconate, nicotinamide, citric acid an xylocaine base in water.
Patent GB-950480-A (GB)
Title: Upright refrigerated cabinet having a front opening without doors
IPC: A47F3/04
Filed: 1960-11-25
Abstract: 950,480. Refrigerators. L. F. BARROERO. Nov. 25, 1960, No. 40662/60. Heading F4H. A refrigerated cabinet 10 having an open front 17 includes a plurality of hollow shelves 30 having perforated upper and lower surfaces 37 and 38 respectively, each shelf being divided by a partition 39 into upper and lower air compartments which communicate respectively with a manifold 23 (Fig. 3) connected to the suction side of blower means and a manifold 20 (Fig. 2) connected to the discharge side of said blower means. The latter comprises a lower blower 29 and an upper blower 27 mounted in a storage space 26 at the rear of the manifolds 20, 23, refrigeration coils 28 being located immediately adjacent the discharge of blower 27. Refrigerated air is supplied to the cabinet through perforations 19 in the lower surfaces of an upper header 18 and through the perforations in the lower surfaces 38 of the trays air, and is withdrawn through the perforations in the upper walls 37 of the trays and through perforations 47 in the surface of a lower half-shelf 45. The partitions 39 are formed as slidable trays and have forwardly directed lips 41 which are spaced from the front edges of the surfaces 37. The latter may be grooved along each or alternate rows of perforations so that air circulation may take place when the shelves are occupied.
Patent GB-921129-A (GB)
Title: Electromagnetic valves for controlling pressure in a pneumatic line
Inventor: MAY CLIFFORD FRANK
IPC: F16K31/06
Filed: 1960-11-28
Abstract: 921,129. Valves. JOSEPH LUCAS (INDUSTRIES) Ltd. Nov. 15, 1961 [Nov. 28, 1960], No. 40767/60. Class 135. An electromagnetic valve for controlling pressure in a pneumatic line comprises a body 3, 4, 7 defining a stepped bore the smaller portion 5 defining an outlet, a plunger slidable with clearance in the larger bore portion, the plunger having at least one groove 12 in its end face facing a shoulder between the portions of the bore, an annular resilient washer 12 between the plunger and the shoulder, and an electromagnetic coil 10 adapted to urge the plunger towards the shoulder, and the arrangement being such that air can flow around the plunger through the bore to the outlet at a rate dependent upon the current flowing in the coil. In operation, when the coil is de-energized air flows through the clearance space between the plunger and body and through the outlet 5. When the coil is energized the plunger end is drawn against the resilient washer thereby permitting restricted flow through the groove 12 only. Upon in. creasing the electric current the washer is compressed into the groove thereby further restricting the flow.
Patent GB-1283966-A (GB)
Title: Self-oscillating voltage converter
IPC: H03J3/18
Filed: 1969-08-19
Abstract: 1283966 Converting PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Aug 1969 [22 Aug 1968] 41372/69 Heading H2F [Also in Division H3] A voltage converter including a single-ended push-pull pair of complementary transistors 1, 2 is characterized in that the emitter collector path of the transistor 2 is shunted by a series connection of a piezo-electric device 4 and a capacitance 5, 6 which is large compared with the series capacitance of the device 4, and in that the signal across at least part of the capacitance is fedback to the bases of the transistors via a resistance 7. The transistors may be emitter coupled, as shown, so that the converter is insensitive to variations in their current gains, or alternatively, Fig. 2 (not shown), they may be collector coupled with the phase inverter 17 omitted. The output voltage is rectified by voltage multiplier 11, 12, 13, 11<SP>1</SP>, 12<SP>1</SP>, 13<SP>1</SP> and may be applied as a control to varactor diodes for tuning a signal receiver, the resonant frequency of the device 4 being above the receiver range. The converter may be formed as an intergrated circuit.
Patent GB-1097776-A (GB)
Title: Improvements relating to digital to analogue converters
Inventor: VOLES ROGER
IPC: H03M1/00
Filed: 1963-10-19
Abstract: 1,097,776. Digital-to-analogue converter. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 19, 1964 [Oct. 19, 1963], No. 41385/63. Heading G4H. A digital-to-analogue converter comprises two such converters the inputs to which are changed to correspond to the overall digital input alternately, an overall analogue output being substantially entirely derived from the output of the converter whose input is not being changed, at any given time. In Fig. 1, a train of equal-valued pulses at 1 is split so alternate pulses go to counters A and B respectively on lines 3, 4. The counters count two in response to each pulse, and start counting at 0 and - 1 respectively. The counter stages control analogue gates to pass sinusoidal voltages on lines 14, 15 from a transformer 11 through binary weighted resistors 17 to an output amplifier 19. The input pulses on line 3 are lengthened by trigger 5 and passed through a band-pass filter 7 and inverting amplifier 9 to transformer 11 to provide the sinusoidal voltages, varying between zero and a positive value, on lines 14, 15, the troughs of each sinusoid coinciding in time with the pulses applied to the corresponding counter. Fig. 5 (not shown), shows a modified arrangement for producing the voltages on lines 14, 15, for the case of a digital input with irregular p.r.f., using a low-pass filter, inverter and analogue adders. Fig. 7 (not shown), shows a modification in which a parallel binary-coded overall digital input is applied to two registers, in one case via delays, and the register outputs are used in the same way that the counter outputs are used in Fig. 1. Clock pulses reset the registers at different times and also, by means of a trigger, low-pass filter and inverter, produce positive and negative mesa-shaped pulses which are fed to the equivalent of lines 14, 15 of Fig. 1. It is also mentioned that the inputs to the registers may alternatively be serial.
Patent GB-1386685-A (GB)
Title: Wrapping or labelling articles
IPC: B65B11/08
Filed: 1972-09-08
Abstract: 1386685 Wrapping hollow articles; labelling METAL BOX CO Ltd 7 Sept 1973 [8 Sept 1972] 41679/72 Headings B8C and B8F [Also in Divisions F1 and F2] A method of wrapping a non-circular, non- rigid, hollow article, e.g. a generally-rectangular bottle 10 with a pouring spout 12, comprises the steps of partially-evacuating the article so as to deform it in such a way that the perimeter of the cross-section is reduced, slipping an openended tubular wrapper 14 over the article so as to surround it, and releasing the vacuum thus allowing the article to return to its normal shape in which it tightly engages with the wrapper. The wrapper sleeve 14 may be in the form of a label, and is formed of a plastics film, which may be shrinkable, such as PVC or, non- shrinkable, such as polyethylene, and which is preferably formed of cast polypropylene. A machine for carrying out the method comprises a cabinet 16 with two openings 18 each providing access to a pair of horizontally-reciprocal gripping jaws 19, 19 the latter having recesses 21 so that, when the jaws 19, 19 of a pair are closed together they grip the spout 12 and the handles 15 of a bottle 10 with the latter projecting outwardly of the cabinet 16. A nozzle 24 is located behind each pair of jaws 19, 19 to sealingly engage the spout 12 of a bottle clamped between these jaws for evacuating the bottle. The machine has a tray 22 for holding a stack of flat wrappers 14 and a take-out conveyer 23. Each pair of jaws 19, 19 is actuated by a double-acting pneumatic piston-and-cylinder unit 26 which is biased into its extended position by an internal spring. The nozzles 24 and actuators 26 are connected through respective electro-pneumatic valves 27, 29 to common vacuum pump P, and compressed air sources 30 respectively. When a bottle 10 is placed between a pair of jaws 19, 19 a respective one of two electric switches 31 is closed by the bottle handle 15 to open the valves 27, 29 of the nozzle 24 and the actuator 26 associated with said jaws 19, 19, the corresponding valves 27, 29 associated with the other pair of jaws 19, 19 being closed. In addition a switch 31, behind each opening, and when closed, operates a respective timer T to admit a short blast of air to the nozzle 24. Vacuum applied through the nozzle 12 connected to a spout 12 reduces the peripheral size of the bottle 10 so that an operator can slip a sleeve 14 around the bottle and then place a second bottle between the vacant open jaws 19 in the other opening 18. This causes the vacuum to be released from the first bottle and a short blast of air to be blown into it, to reinflate and eject it on to the conveyer 23 as the first pair of jaws open. The process is then repeated. A cap 13 may be fitted to the spout 12. A length of wrapping material may be drawn from a roll wrapped around a bottle and then cut and sealed to form a sleeve in situ.
Patent GB-1076524-A (GB)
Title: Improvements in or relating to welding electrodes
IPC: B23K35/368
Filed: 1964-10-12
Abstract: A high tensile steel has the following composition:-  0.1 - 0.2% C 0.6 - 1% Mn 0.05 - 0.35% Si 0.7 - 1% Ni 0.4 - 0.8% Cr 0.4 - 0.6% Mo 0.03 - 0.1% V 0.15 - 0.5% Cu 0.002 - 0.006% B 0.04% max. P 0.05% max. S balance Fe.
Patent GB-1057947-A (GB)
Title: Process for the recording, using an electron beam, and retrieval of information
IPC: G03G5/02
Filed: 1963-10-23
Abstract: A polymerizable recording medium, if desired carried on a natural or synthetic polymer support, is polymerized with an electron beam, said medium comprising, generally together with a polymeric binding agent, at least one non-gaseous ethylenically unsaturated polymerizable compound having a b.p. above 100 DEG  C. In examples, the polymerizable compounds used are triethylene glycol diacrylate, pentaerythritol tri- and tetra-acrylates and a mixture thereof, glycerol triacrylate, trimethylolpropane trimethacrylate and diallyl succinate; other compounds are also disclosed, viz. glycerol di- and tri-methacrylate, glycerol diacrylate, diallyl maleate, butane-1,2,4-triol tri-methacrylate, tri-methylolpropane tri-methacrylate, tetramethylene glycol dimethacrylate, polyethylene glycol diacrylate, triallyl cyanurate and dipentaerythritol tetraacrylate.  The preferrd binder is cellulose acetate/hydrogen succinate but several other polymeric compounds are also exemplified. Polymerization initiators may also be present, e.g. b -methylanthraquinone and benzoin methyl ether, and also inhibitors, e.g. p-methoxyphenol.
Patent GB-873277-A (GB)
Title: Method for scrambling communication signals
IPC: H04L9/18
Filed: 1959-12-10
Abstract: 873,277. Secret transmission. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING A.G. Dec. 10, 1959 [Dec. 10, 1958], No. 42007/59. Class 40 (4). [Also in Group XL (c)] In an electrical communication system an additional signal for mixing with the communication signal is produced at the transmitter and receiver from pulse generators controlled by identical control pulse signals, the pulse generators operating in identical manner to produce pulses whose parameters are influenced by the properties of a plurality of the previously occurring control pulses. The control signal may be of the random type obtained from a noise source. The mixing may be of the additive or multiplicative type. In the former case the pulse signals may be converted into a smooth waveform by means of a digital/ analogue converter. The latter type may be more especially applicable when the communication signals are of the pulse type. In this case, moreover, the output of the mixer may be taken as the control signal, Fig. 2 (not shown), i.e. the transmitted (and received) signal serves as the control signal so eliminating the necessity for a separate control channel. The generators may combine one or more delay lines with a plurality of logic circuits to give the required mixing signal. Fig. 9 illustrates five types of logic circuits which may be used, the tables A . . . E illustrating the outputs obtained for different pulse inputs on the two leads a 1 , a 2 . The symbol M indicates that the output signal in the previous pulse position is repeated. Fig. 14 illustrates one of many combinations of delay lines and logic circuits described. The control signal U is applied to two delay lines VE 1 , VE 2  in cascade. These may be of the stepping register type comprising magnetic cores or bi-stable circuits. Outputs from tappings of VE 1  are applied via a manually settable commutator switch PS 1  whose outputs are fed to combinations of logic circuits KA 1  having four outputs dependent upon the input signals applied. Devices SE 1 , SE 2  each contain storage devices connected so that coincidences on various combinations of input leads may be effective to change the states of some of them. These changes are arranged to cause pulses of various polarities to be emitted to logic circuits KA5 . . . 7. The outputs of the latter are applied to the delay circuit VE 2  in such a way as to modify the outputs of some of its tappings, e.g. by inverting the polarity or interfering with the stepping process along the delay line. The outputs of VE 2  are treated similarly to those of VE 1  to produce outputs V 1 , V 2 , V 3 . These may then be combined in a suitable manner to produce the mixing signal.
Patent GB-1128762-A (GB)
Title: A heat developable diazotype material for reproducing documents by the diazo type process
IPC: G03C1/61
Filed: 1965-10-05
Abstract: 1,128,762. Heat developable diazotype materials. ETABS. BAUCHET & CIE SOC. ANON. Oct. 5, 1965 [Oct. 5, 1964], No.42205/65. Heading G2C. A heat developable diazotype material comprises a support coated with a layer containing a diazonium compound, an acid stabilizer and a coupler unless this is generated on heating from the overcoated layer, and an overcoated developer layer containing a heat-sensitive organic base in a polymeric binder, the base being a thiazole, pyrrole, pyrazole, pyrimidine, piperazine, indole, imidazole, triazole, morpholine, piperdine, amidine, formarmidine, polymethylene, tetramine, aminopoly, quinoline, guanidine, pyridine, aminopyridine, hydroamide, amidoxine, or aminohydrazone, 2-(acetoacetyl-4-amino-pyridine and 2-acetobenzoyl) are specified bases which generate couplers and bases on heating. The developer layer or an overcoated layer may also contain the salt of the base more volatile than the organic base e. g. ammonium and amine salts, which volatile base is expelled on heating and acts as the developer. Silica or a plasticizer may also be added to the developer layer. In the examples, a two-component diazotype material is overcoated with a layer containing a polymeric binder, N- acetyl-guanidine, nicotinamide or hydrofuramide and optionally ammonium sulphanate or sulphocyanate. Alternatively a one-component diazotype material is overcoated with a layer containing a polymeric binder and 2 (aceto-acetylamino) pyridine which generates both a coepher and a base on heating.
Patent GB-1179867-A (GB)
Title: Dissolution of Potassium Chloride Ores
IPC: C01D3/08
Filed: 1967-09-15
Abstract: 1,179,867. Solution mining. CANADIAN PATENTS & DEVELOPMENT Ltd. 15 Sept., 1967 [29 Sept., 1966], No. 42223/67. Heading E1F. [Also in Division C1] In a process of dissolving potassium ions from a mixture of an ore in situ by using an aqueous leach solution containing at least 90% by weight of the saturation amount of sodium chloride, recrystallizing sodium chloride is prevented from adhering to a dissolving face by adding, to the aqueous leach solution, manganous ions in a proportion of at least 100 ppm by weight of the water. The manganous ions are preferably derived from manganous chloride. In an Example, potassium chloride is leached from sylvinite ores containing 60% and 23% KCl, using saturated and 94% saturated NaCl solutions containing 100-1000 ppm of Mn<SP>++</SP>.
Patent GB-1045729-A (GB)
Title: Improvements relating to the machining of small bore metal tubing
Inventor: WATSON PETER MICHAEL FREDERICK
IPC: B23Q3/08
Filed: 1964-10-16
Abstract: 1,045,729. Grinding. GILLETTE INDUSTRIES Ltd. Sept. 27, 1965 [Oct. 16, 1964], No. 42352/64. Heading B3D. An end of a small bore metal tube is ground to a desired configuration while the bore of the tube is filled with a core of ice, whereby the formation of burrs is prevented or reduced to within acceptable limits. In the manufacture of surgical needles, water under pressure is forced into a length of stainless steel tubing to fill the bore completely, the water being retained by capillary action. The water may be distilled water or may contain additives such as those used in the coolant used in subsequent grinding. The tube is then immersed in solid carbon dioxide at a temperature of -75 C. for a minute or longer; liquid air or nitrogen may be used. One end of the tube is then given the desired point configuration by a grinding wheel. Coolant is supplied to the working zone either at room temperature or refrigerated, e.g. at - 5 C. The pointed tube is then subjected to further grinding to form a bevelled facet on one or both sides of the point; the bore of the tube may be filled with ice during this bevel grinding.
Patent GB-1072616-A (GB)
Title: Device for automatic adjustment of the headlights of a vehicle
IPC: F16L55/00
Filed: 1965-10-07
Abstract: 1,072,616. Controlling vehicle headlamps. PROJECTEURS CIBIE. Oct. 7, 1965 [Oct. 7, 1964; April 3, 1965; July 1, 1965], No. 42687/65. Heading F4R. [Also in Division F1] The inclination of the headlamps of a vehicle is automatically corrected in accordance with changes in the load by means comprising a pair of pivoted systems at the front and rear of the vehicle respectively which respond to the displacement of the suspended parts relatively to the non-suspended and thereby displace levers from a median position, the levers acting through hydraulic transmission devices to tilt the headlamps. In one form, cranked levers 4a, 4b caused by supports 3a, 3b on the chassis have arms 5a, 5b coupled to the axes of the wheels 2a, 2b and arms 6a, 6b, the ends of which rest between pairs of discs 9a, 9b so that inclination of the levers displaces member 14a, 14b to move pistons in cylinders 26a, 26b, coupled by fluid pipes 27a, 27b to cylinders 28a, 28b. A piston in each cylinder 28a, 28b is thereby displaced and tilts a bar 30 to alter the inclination of the headlamp 24 through a lever system 21, 22, 23, if the movement of the levers 4a, 4b is unequal. Dashpots 16a, 16b are provided to damp out minor displacements. The lever system may be replaced by hydraulic control means. In a modification, the levers associated with the front and rear wheels each move an element between two liquid filled chambers coupled together and to cylinders associated with the headlamps so that unequal movement of the levers causes inclination of the headlamps.
Patent GB-1525829-A (GB)
Title: Pipette devices
IPC: B01L3/02
Filed: 1976-10-15
Abstract: 1525829 Pipette EPPENDORF GERATEBAU NETHELER & HINZ GmbH 15 Oct 1976 [5 Nov 1975] 42960/76 Heading B1X A pipette device includes a casing 2, an actuating member 10 projecting from an upper end of the casing and adapted to be depressed into the casing against biasing spring 12, the actuating member being connected to a piston-cylinder assembly within the casing, the piston adapted to displace an air volume and being connected to an aperture of a connector portion for mounting slip-on pipette tip members open at their upper and lower ends, whereby an excess lift movement of the actuating member serves to actuate an ejector device, and the piston, piston rod or actuating member includes at least one stop defining an abutment means 24, 25 which includes releasable detent means 18 adapted to be released by a temporarily increased actuating pressure on the actuating member. The connector portion may be in the form of a cone-shaped adapter. In one embodiment, the releasable detent means comprise a separable magnetic assembly of a pair of magnetic members, one being secured to the casing and the other at the abutment means. The device enables pipetting apertures and ejection of the tip to be operated by one hand in a single position.
Patent GB-1404053-A (GB)
Title: Apparatuses for automatically producing mould parts
IPC: B22C11/10
Filed: 1972-09-15
Abstract: 1404053 Foundry moulding machines DANSK INDUSTRI SYNDIKAT AS 15 Sept 1972 [23 Sept 1971] 43016/72 Heading B3F In a machine for producing "flaskless" foundry moulds, which machine includes a pressing chamber 1 containing a movable presser plate 5 and counterpressure plate 4, the top wall 3 of the pressing chamber 1 is provided with at least two apertures 9, 10 by which sand can be forced by air pressure into the pressing chamber 1 from a bin 12. A rotatable funnel 11  with a cover flange 15 is used alternately to block off one aperture (10) and allow sand to flow through the other (9). Alternatively, the bottom of the bin (12) can be provided with a hinged valve plate (18) which can be used to block off either aperture from sand flow (not shown). The double aperture arrangement allows mould parts of two thicknesses to be made in the machine by ensuring that sand is supplied centrally to the pressure chamber 1 when either thin moulds (using aperture 9) or thick moulds (using aperture 10) are made.