baber/WOPTO huggingface dataset:
Patent GB-1279643-A (GB)
Title: Optical system for imaging near-axis points without meridional coma
Inventor: HOFMANN CHRISTIAN
IPC: G02B3/08
Filed: 1969-09-17
Abstract: 1279643 Fresnel lenses CARL ZEISS JENA VEB 17 Sept 1969 45802/69 Heading G2J An optical system which images rear-axis points without meridional coma and has Fresnel echelons at least on one optical face at any desired place thereof has a meridional curve which satisfies the condition and wherein the normal of the active flanks of the Fresnel faces and the optical axis of the system enclose an angle # m  which results from where #<SP>1</SP> 1x  is the poraxial image scale of the system, A 1 <SP>(0</SP> 2  <SP>M</SP>   <SP>-</SP>   <SP>1)</SP> and B 1 <SP>(M</SP> 2  <SP>X)</SP>are the matrices, n<SP>1</SP>m is the refractive index on the image side of the face m carrying the Fresnel faces, n<SP>1</SP> M-1  is the refractive index on the object side of the Fresnel face, Q<SP>1</SP> M  is the angle enclosed by the optical axis and an imaging ray on the image side of the Fresnel face, and Q<SP>1</SP> m-1  is the angle enclosed by the optical axis and an imaging ray on the object side of the Fresnel face. The refractive powers of the parts of the system on either side of the Fresnel face are distributed in such that departues from the condition are a minimum. The system may be a single lens of which one face has a series of Fresnel echelons. The Fresnel face may be plane or concave. Alternatively the system may comprise a compound lens of two components. For microscopy the system comprises two facing plane surfaces each carrying Fresnel echelons. Optical data are given.
Patent GB-1311956-A (GB)
Title: Method of potentiating the activity of phosphonomycin antibiotics
IPC: A61K35/74
Filed: 1970-09-28
Abstract: 1311956 Potentiated phosphonomycins MERCK & CO Inc 28 Sept 1970 [2 Oct 1969 11 Sept 1970] 46063/70 Heading A5B The antibacterial activity of phosphonomycin antibiotics in non-human animals is potentiated by bringing bacteria into contact with an inducer selected from phosphatides, sugar phosphates and salts thereof, and polyhydric alcohols, whereby an existing phosphonomycin transport pathway in the bacteria is enhanced or a new such pathway is created, and subsequently or simultaneously bringing the bacteria into contact with a phosphonomycin antibiotic. The invention includes compositions comprising a phosphonomycin antibiotic and an inducer as indicated above.
Patent GB-1450693-A (GB)
Title: Beta-3-oxo-7alpha-acylthio-17beta-hydroxy-4-androsten-or estren- 17alpha-yl- propionic acidderivatives
IPC: C07J21/00
Filed: 1973-10-04
Abstract: 1450693 Steroid spirolactones and antecedents HOECHST AG 4 Oct 1973 [5 Oct 1972] 46391/73 Heading C2U The invention comprises compounds of formula  (wherein R 1  is H or Me; and R 2  and R 3  are each C 1-5  alkyl); their preparation from the corresponding 7-unsubstituted-4,6-dienes by reaction with R 2 COSH in a mixture of water and a water-miscible organic solvent; and their oxidation under acid conditions into spirolactones of formula The #<SP>4,6</SP> starting materials are prepared as described in Specifications 1,444,272 and 1,450,425.
Patent GB-1407236-A (GB)
Title: Cutting force sensor
IPC: G01N3/58
Filed: 1972-10-10
Abstract: 1407236 Mining machines COAL INDUSTRY (PATENTS) LTD 5 Oct 1973 [10 Oct 1972] 46570/72 Heading E1F [Also in Division G1] The force exerted by the cutting head of a mineral mining machine is measured by a sensor mounted on the head and transmitted by radio to a receiver. As shown (Fig 1), the rotary cutter head 25 of a longwall face coal mining machine carries a holder 2 in which is fitted a tool 1. The tool shank 5, which engages in a slot 6, has a recess 9 in which is assembled a load cell 8 with a spherical button 10 between the load cell 8 and the wall of the slot 6. During the cutting operation the tool 1 pivots about a projection 12 and the cutting force is measured by the output from the load cell, which frequency modulates the signal from a radio transmitter housed in a box 16. The received signal may be recorded or used to steer the cutting head to avoid hard rock.
Patent GB-1111926-A (GB)
Title: Production of ammonium zirconyl carbonate
IPC: C01G25/00
Filed: 1966-10-18
Abstract: Ammonium zirconyl carbonate which may contain the corresponding hafnium compound is prepared by reacting barium zirconate with ammonia and carbon dioxide in an aqueous slurry the pH of which is maintained at 8.0-10.5, the ammonia being introduced either in uncombined form or in the form of an ammonium salt, and the carbon dioxide being introduced either in uncombined form or in the form of ammonium carbonate or bicarbonate.  The reaction may be carried out at 15-50 DEG  C. Preferred ratios of reactants are: <FORM:1111926/C1/1> It is preferred that at least 90% of the barium zirconate have a particle size less than 74m  and not more than 50% have a particle size more than 44m .  Barium carbonate precipitated in the process may be subsequently calcined with zirconium dioxide to re-form barium zirconate.  Barium hafnate present as an impurity in the barium zirconate is correspondingly converted to ammonium hafnyl carbonate.
Patent GB-1178880-A (GB)
Title: Process for the preparation of Chrysanthemic Acid and Cyclopropane Compounds related thereto
IPC: C07D315/00
Filed: 1967-10-12
Abstract: 1,178,880. Cyclopropane derivatives. RHONEPOULENC S.A. 12 Oct., 1967 [12 Oct., 1966; 24 Feb., 1967], No. 46674/67. Heading C2C. The invention relates to cyclopropane derivatives of the formula in which R is an alkyl group of 1-5 C atoms. Compounds claimed per se are 1-Diethoxycarbonyl - 2,2 - dimethyl - 3 - isobutenyl - cyclopropane; 1 - Ethoxycarbonyl - 2,2 - dimethyl- 3 - isobutenyl - cyclopropane carboxylic acid; 1 - Cyano - 1 - ethoxy - carbonyl - 2,2 - dimethyl- 3 - isobutenyl - cyclopropane; I - Cyano - 2,2- dimethyl-3-isobutenyl-cyclopropane. The invention also relates to a process for the preparation of chrysanthemic acid and its nitrile and esters with alkanols of 1-5 C atoms which comprises decarboxylating a cyclopropane derivative of Formula IX by heating in the presence of copper powder in quinoline to give, as a mixture of cis and trans isomers, a chrysanthemic ester or nitrile, which is then hydrolysed to chrysanthemic acid, optionally after converting any cis compounds to trans compounds. The cyclopropane derivatives are prepared by (a) oxidizing 1-phenylthio-3-methyl-but-2-ene to the corresponding sulphone; (b) treating this sulphone with an alkylmagnesium halide to convert it into the magnesium derivative of the formula in which R<SP>1</SP> represents phenyl; (c) adding to the magnesium, derivative thus obtained a malonic or cyanacetic acid of the formula and hydrolysing the product of this condensation to produce the compoundof the formula VIII and the isomeric compound of formula which is separated; (d) partially hydrolysing the cyclopropane compound with an alcoholic solution of an alkali metal hydroxide in the cold; and (e) isolating the cyclopropane derivative.
Patent GB-1119606-A (GB)
Title: Transistorized deflection system with protective means
IPC: H04N3/18
Filed: 1966-10-19
Abstract: 1,119,606. Transistor sawtooth circuits. PHILCO-FORD CORP. 19 Oct., 1966 [19 Oct., 1965], No. 46678/66. Heading H3T. In a deflection circuit, particularly for horizontal deflection in a television receiver, the output transistor is protected against excessive flyback pulses by a threshold conductive device (such as diode 33) connected to an auxiliary winding on the output transformer. As described, diode 33 becomes conductive when the flyback pulses at winding 32 become more negative than the voltage of supply 20. This may be due to a decrease in frequency. In Fig. 1 (not shown) diode 33 is connected between a specified topping on winding 12 and ground.
Patent GB-1214646-A (GB)
Title: Improvements in or relating to standby power supply systems
Inventor: WEINBERG ALAN HENRY
IPC: H03L7/085
Filed: 1967-10-13
Abstract: 1,214,646. Converting; stand-by power supplies. PLESSEY CO. Ltd. 4 Oct., 1968 [13 Oct., 1967], No. 46728/67. Headings H2F and H2H. [Also in Division H3] In an emergency stand-by power supply system, Fig. 6, an inverter 26 is locked in phase quadrature with the mains input whereby it supplies no power to load 31 under normal conditions and takes over with no break in the event of a power failure. Thyristors 32 prevent power being fed back to the mains input. The inverter may have its frequency controlled by a unijunction transistor relaxation oscillator, Fig. 3 (not shown), the feedback signal adjusting the " aiming " potential of a CR circuit. In the phase locking system, Fig. 2, the inverter 4 is phase controlled by comparing its output with a reference signal to produce an error signal dependent on the phase difference, and combining the error signal with a control signal to produce a phase correction signal which controls the generator such that it is phase locked to the reference signal at a phase angle determined by the control signal. The reference signal and generator output signal are clipped and differentiated by units 4, 5 to produce pulses which switch bi-stable circuit 7. The resulting output, comprising pulses having a duration dependent on the phase difference, is then integrated at 8 to produce the error signal. The error signal and control signal are then fed to longtailed pair 9 to provide the required correction signal. The comparator and longtailed pair may be formed as transistor circuits, Fig. 4 (not shown).
Patent GB-1080423-A (GB)
Title: Method and apparatus for winding yarn
Inventor: JOHNSON BRYAN KINGSLEY
IPC: B65H54/74
Filed: 1964-04-04
Abstract: The extent of "ridging" or "ribbon winding" is diminished during the winding of a cheese package by abruptly changing - preferably increasing - the traversal speed at the points at which "ridging" occurs.  The yarn is traversed by a guide driven by an electric motor through a variable pitch pulley arrangement having an appropriately profiled cam.  The package is mounted on a spindle driven by an electric motor the speed of which is controlled by a yarn tension sensing device.
Patent GB-1032397-A (GB)
Title: Improvements in and relating to automatic voltage compensation in electric welding machines
IPC: B23K11/24
Filed: 1962-12-14
Abstract: 1,032,397. Resistance welders. WELDING RESEARCH Inc. Dec. 14, 1962 [Jan. 24, 1962], No. 47231/62. Heading H2H. In a circuit particularly for welding, wherein the supply voltage is sensed and the setting of controlled thyratrons is altered to keep the welding current constant, a phase shifting network includes a plurality of monostable flipflops each having a constant delay, which fire a plurality of thyratrons at regular intervals, viz. 60 degrees for a 3-phase system, from a single output signal. A fraction of the supply voltage appears across a potentiometer 16 which feeds a resonant circuit 18, 20, 21 adjustably phased by inductor 18 supplying a sine wave to a grid 34 which is D.C. biased by diode clamp 26. The firing point of tube 31 is determined by a voltage divider 44 which adjusts the cathode bias. Tube 31 is capacitor coupled to grid 79 also having a diode clamp 80. When tube 31 extinguishes tube 76 fires discharging a capacitor 86 through a winding 83 of a transformer 84 producing a voltage pulse operating monostable flip-flops 97-99 each having differing delay characteristics controlled by a potentiometer, e.g. 114. The capacitor 86 is recharged through a peaking transformer 30 and rectifier 89. Normally the right-hand side of each double triode is conductive but a pulse will render it non-conductive until the capacitor, e.g. 136, is recharged through potentiometer 114 and resistor 137, when the conduction energizes a pulse transformer 111, 112 to fire one thyratron. Monostable flip-flops 98, 99 energize transformers 117, 123 respectively 60 degrees and 120 degrees later, the latter energizing two further flip-flops 102, 103 each with further delays of 120 degrees and 60 degrees respectively. The transformer 117 has two secondary windings reversibly connected to separate thyratrons so that one thyratron is fired when the transformer is energized and the other is fired when the transformer is de-energized.
Patent GB-473514-A (GB)
Abstract: 473,514. Copying by scanning. BUBNOFF, B. Jan. 4, 1936, No. 31925. Divided out of 459,749. Drawings to Specification. [Class 40 (iii)] In a system for reproducing monochromatic or polychromatic pictures by scanning photoelectrically separated colour partial pictures and operating colouring appliances as described in Specification 459,749, each colouring appliance is influenced simultaneously by the photo cells of the different partial pictures. One of the cells is illuminated by the partial picture corresponding to the colour to be applied and the other cells by the partial pictures corresponding to the other colours in order to produce a correcting effect. An additional colour, e.g. black, which has no counterpart in the partial pictures may also be applied to the reproduced picture. In this arrangement, the cells and colouring appliances are arranged in such a manner that the additional colour is applied only when the colour intensities of the different partial pictures are equal and the basic cell of a colour group is influenced by the correcting cells only when the intensities are unequal. Specification 472,870 also is referred to.
Patent GB-1087976-A (GB)
Title: Vehicle headlamp adjusting means
IPC: B60Q1/10
Filed: 1964-11-21
Abstract: 1,087,976. Mounting vehicle lamps. G. P. S. YSSEL. Nov.21, 1964, No. 47462/64. Heading F4R. A wheeled vehicle having a resiliently suspended body and pivotally mounted headlamps is provided with means operated by one or more of the suspension members for automatically tilting the headlamps to compensate for pitching movements of the body due to variations in loading or to rapid acceleration or deceleration. The means may be electrical, mechanical, hydraulic or pneumatic, or a combination of these types. In a first embodiment, Fig. 1, resilient expandible and contractible bulbous elements 4 are disposed between the rear suspension springs 2 and the body 3 and are connected by non-expandable conduits 5, 10 to similar elements 8 mounted in contact with the front control arms 7 of the vehicle. A branch conduit 11 is connected to a further element 12 in engagement with a crank arm 19 mounted on a rotatable shaft 18 controlling the tilting of the headlamps 14 which are spring-biased to a normal position. The arrangement is such that lowering of the rear of the vehicle body relative to the back axle 1 compresses the elements 4 whereas lowering of the front of the body allows the elements 8 to expand, the resultant displaced fluid causing the element 12 to expand or contract and tilt the headlamps accordingly so that their beams remain level. Sideways tilting of the body causes equal and opposite variations in the volumes of the elements 4, 8 and consequently does not affect the element 12. A restricted passage 13 in the conduit 11 damps the action of the element 12 and prevents movement of the headlamps in response to jolts and vibrations. In a modification the elements 4 and 8 may be controlled by crank arms on the corresponding anti-roll bars of the vehicle. To prevent the headlamps from tilting in response to changes in the ambient temperature the element 12 may be mounted on one end of a pivoted lever 30 (Figs. 6-9, not shown) the other end of which is controlled by a fluid-filled bulbous element (31), a weight (33), a spring (34), a temperatureresponsive metallic element (37) or a temperature-responsive concertina-like element (38). The element 12 may alternatively be carried by a bi-metallic strip or the crank arm 19 may be replaced by a bi-metallic strip. The bulbous elements may be replaced by piston and cylinder assemblies. In a further embodiment (Figure 13, not shown) the crank arms on the front and rear anti-roll bars are connected to Bowden cables the differential movement of which is employed to tilt the headlamps. In Fig. 14, not shown, the Bowden cables are replaced by a system of springs and push-rods.
Patent GB-1514168-A (GB)
Title: Belt weighing machines
IPC: G01G23/01
Filed: 1974-11-04
Abstract: 1514168 Testing belt weighing machines BRITISH STEEL CORP 31 Oct 1975 [4 Nov 1974] 47527/74 Heading G1W A method of testing the accuracy of a weighing section of a conveyer belt in which it passes over idler rollers, comprises applying a test weight over the static belt to identify the length over which weight is sensed and in the event that weight is sensed on the entry side of the entry isolation roller A or on the exit side of the exit isolation roller A<SP>1</SP>, moving away from the relevant isolation roller either the adjacent non-weighed roller B, B<SP>1</SP> or, where there are at least four weighed rollers, the next but one, D, D<SP>1</SP> of the latter. The steps are repeated until weight is no longer sensed on the entry or exit side. A strip 11 having weight locating battens 12 can be laid transversely across the belt to receive weights during testing. Additionally, a static test load may be applied to the weighing apparatus itself, with the belt running unloaded to test the accuracy of the weighing mechanism and then the load may be run through on the moving belt. The error between the latter reading and true weight is used as a percentage to adjust the theoretical weighlength by moving the isolation idler rollers A, A<SP>1</SP>
Patent GB-1367952-A (GB)
Title: Method for manufacturing shopping bags and device for the working thereof
IPC: B31B19/86
Filed: 1971-10-19
Abstract: 1367952 Making carrier bags PRINTEX 19 Oct 1971 [20 Oct 1970] 48510/71 Heading A4G Carrier bags are made by feeding formed bag bodies to a welding position 7, spreading the opposed sides at the opening, inserting a pair of handles 1, allowing the sides to come together, and welding the handles simultaneously to the inside of the top edge of the bag. As shown in Fig.1, the bag may have a single bottom seam and side gussets. The handles may be fed in pairs from magazine 36 via reciprocating slide 33 to the welding position 7, and the handles may be temporarily joined or separate. Alternatively Fig. 4 (not shown), there may be two magazines and slides each feeding one handle of a pair. The sides of the bag may be spread during movement towards the sealing position by suction devices 20. The handles may be inserted during movement or after movement has stopped. The device may be run in synchronism with a bag-body-forming machine, or may accept bag bodies from a stock. The bags with handles are removed by peg 39 on conveyer 16 on to slower-moving conveyer 42.
Patent GB-1088395-A (GB)
Title: Improvements in or relating to sulphonyl urea derivatives
Inventor: JUCKER ERNST
IPC: C07D451/02
Filed: 1964-11-30
Abstract: Novel sulphonyl ureas of the formula <FORM:1088395/C2/1> wherein R1 is H, CH3, C2H5, CH3CO or a halogen atom and n is 2 or 3, and their salts are made by reacting an N-amino-nortropane or N-amino-granatanine with a corresponding benzenesulphonyl-isocyanate, -carbamic ester or -urea and, if desired, converting the product into its salt.  9-Amino-9-azabicyclo[3,3,1]nonane is made by condensing glutaric dialdehyde and ammonium chloride in the presence of sodium acetate to give 9-azabicyclo[3,3,1]nonane-3-one (identified as the picrate), reducing the keto group with hydrazine to give 9-azabicyclo-[3,3,1]nonane(granatanine), treating with sodium nitrite in sulphuric acid to give the 9-nitroso compound and reducing with lithium aluminium hydride.  Pharmaceutical preparations for the treatment of diabetes comprise the above compounds of the invention and a physiologically acceptable carrier, suitably in a form adapted to oral administration such as tablets, dragees, capsules or syrups.
Patent GB-1457195-A (GB)
Title: Closure
IPC: B65D41/34
Filed: 1974-11-13
Abstract: 1457195 Tamper-indicating closure LE BOUCHAGE MECANIQUE 13 Nov 1974 [16 Nov 1973 2 Aug 1974] 49106/74 Heading B8T A tamper-indicating closure comprises a cap portion, a skirt divided into an upper part 3 and a lower part 4 by a line of weakness formed by incisions 1 separated by bridges 2, and at least one portion 7 interrupting the line of weakness and connected to the upper and lower parts by a plurality of spaced bridges, at least one bridge, e.g. 8 and 9, connecting the portion to each part. The portions 7 are preferably circular, rectangular or semi-circular, and are symmetrically disposed about the line of weakness or entirely in one or other part of the skirt. The upper part 3 may be screw-threaded and the portions may bear at least part of some design or inscription such that, after unscrewing the upper part from the receptacle, the deformation or detachment of the portions 7 is clearly visible.
Patent GB-1442872-A (GB)
Title: Food beating apparatus
IPC: A47J43/08
Filed: 1974-11-15
Abstract: 1442872 Treating eggs POPEIL BROS Inc 15 Nov 1974 [11 Jan 1974] 49502/74 Heading A4D [Also in Divisions B1-2] A double egg separator adapted for superimposition on the container of a food beating apparatus (see Division B1-2) has a pair of yolk cups 118 flanking an egg cracker 120, draining surfaces 114 and slots 116 through which the egg whites drain into the container.
Patent GB-1334184-A (GB)
Title: Centralised warning systems for vehicles
IPC: G07C5/08
Filed: 1971-10-25
Abstract: 1334184 Selective signalling NIPPONDENSO CO Ltd and TOYOTA JIDOSHA KOGYO KK 25 Oct 1971 [27 Oct 1970] 49503/71 Heading G4H A centralized warning system for vehicles comprises a plurality of abnormality sensors feeding circuitry whereby the abnormalities detected are stratified into at least two classes predetermined according to the degree of danger in driving the vehicle, a warning device indicating the highest degree of danger implicit in the detected abnormalities, an indicating device also being driven to display the location of the detected abnormality of highest priority, using comparison of current and desired display contents. The warning device may be three coloured lamps meaning respectively " O.K. ", " warning ", " danger ". The latter two may flash, or be replaced by respective pitches of a buzzer. The indicating device is controlled as follows. A clock-driven counter gates pulses representing detected abnormalities in priority order on to a single lead to gate the current count into latches which retain the highest priority abnormality in coded form for comparison with the position of a drum or tape to display the abnormality of highest priority. Alternatively, all detected abnormalities may be displayed alternately.
Patent GB-1391317-A (GB)
Title: Mining and excavating machines
IPC: E21D9/12
Filed: 1972-10-27
Abstract: 1391317 Mining machine DOBSON PARK INDUSTRIES Ltd 22 June 1973 [27 Oct 1972] 49618/72 Heading E1F A mining or excavating machine comprises a carriage 10, an extensible boom 11, having an articulate mounting on the carriage, for carrying a mineral working tool 12 and a conveyor attached to the carriage and having a portion 13 in front of the carriage to collect material worked by the tool and a portion 14 extending rearwardly alongside the carriage to convey the material away. The conveyor portion 13 carries a ramp 19, with a serrated forward edge 20, which may be advanced into the material by rams 16 connecting the portion 13 to the carriage, and may be vibrated. The rear portion 15 of the conveyor is elevatable and slewable. The boom 11 is articulated to a turntable on the carriage.