baber/WOPTO huggingface dataset:
Patent GB-1515117-A (GB)
Title: Electric kettles
IPC: H01H35/18
Filed: 1974-12-17
Abstract: 1515117 Float-operated switches RUSSELL HOBBS Ltd 13 Jan 1976 [17 Dec 1974] 54426/74 Heading H1N An electric kettle comprises a float 21 on one end of a rotatably mounted member 19 which extends through a wall of the kettle, the other end co-operating with a switch contact to disengage the switch contacts when the liquid surface falls below a predetermined level. In the embodiment shown, a projection 25 on a push-rod 17 engages the end of switch arm 15, which is normally biased into the disengaged position, to close the contacts 14, 16 and latch arm 15 behind the face 26 on arm 18 of member 19, latching occurring only when there is sufficient liquid in the kettle. The contacts can be opened by pulling rod 17, when the inclined surface 27, which engages surface 28 on arm 18 when the latch is engaged, forces arm 18 downwards to open the latch. Arm 18 may comprise a steam-operated bimetallic element to open the latch when the kettle boils, or a separate bimetallic element can be used. Member 19 may carry an insulating member which prevents closure of the switch when the liquid surface is too low. In an alternative embodiment (Figs. 3a, 3b, not shown) one of the switch contacts is moved by a cam on one end of the rotatably mounted member, the other contact being movable by a manually operable rocking dolly which is moved into the "off" position by a bimetallic element when the kettle boils.
Patent GB-1486259-A (GB)
Title: Safety device of a carding machine
IPC: D01H5/62
Filed: 1974-12-17
Abstract: 1486259 Carding machine with crushing rollers TOYODA JIDOSHOKKI SEISAKUSHO KK 17 Dec 1974 54548/74 Heading D1N A carding machine is provided with a pair of crushing rollers 1, 2 each of which has a scraping plate 3, 4 pressed against its surface, means being provided to set the scrapers either in contact with the rollers or spaced from them and in the non contacting situation a switch 24 is actuated to prevent the carding machine drive motor M from operating. The scrapers are fixed to plate springs 3b, 4b which connect pivotally with an arm 11 and their position is determined by a swing lever 20. Swing lever 20 is moved by an eccentric cam 16 rotatable by a hand wheel 14. A stop lever 17 limits the extent of movement of the cam 16. In an alternative embodiment the plate springs 3b, 4b are replaced by levers to which the scraper blades are resiliently pivoted with the aid of compression springs. The switch 24 (S @  in Fig. 4) is in series with the main switch S 1  and its off position contacts can be wired to an alarm A which operates if the main switch is closed while the scrapers are retracted.
Patent GB-1378761-A (GB)
Title: Manufacture of forming rolls
IPC: B21H5/00
Filed: 1971-11-24
Abstract: 1378761 Making gear-forming rolls; rolling metals FORMFLO Ltd 24 Nov 1972 [24 Nov 1971] 54644/71 Headings B3A and B3M A roll for roll forming of gears is made by rolling a finished reference gear against a relatively soft blank to impart to the blank the shape required for the forming roll, and using the shaped blank to prepare the forming roll. The blank may be cold or heated and may be rough shaped before the roll forming. The forming roll may be the blank itself, hardened by heat treatment, or may be a machined copy of the shaped blank, for which purpose the profile of a number of teeth of the shaped blank may be used to provide an average profile form and this may be modified by grinding to a theoretically correct profile. The teeth are preferably of involute form and the gears may be helical or spur. Two blanks are rolled simultaneously, Fig. 2 (not shown).
Patent GB-1163424-A (GB)
Title: Reel
Inventor: O'KEEFE JOHN THOMAS
IPC: B21C47/30
Filed: 1965-12-29
Abstract: 1,163,424. Winding webs. UNITED ENG. & FOUNDRY CO. 15 Dec., 1966 [29 Dec., 1965], No. 55127/65. Heading B8R. [Also in Division F2] An expandable winding drum comprises radially movable segments 10, 11 and bars 16 formed with wedge surfaces 17 which cooperate with wedge bars 19 carried by an arbor 12 so that when the bars 16 are moved axially by a spider 22 on a rod 23 they are moved out to expand the segments 10, 11 against the bias of springs 20. When the drum is expanded the bars 16 and segments 10, 11 form a continuous cylindrical surface. The end of the strip to be wound is held between a radially movable jaw 35 and part of segment 11. An undercut slot 38 in the jaw is engaged by projections 39 of plungers 29 which pass through bores in the segments and have undercut cam slots which co-operates with a T-sectioned cam surface 27 on a bar 26 which is axially movable with the spider 22 to move the jaw 35 radially in and out. A spring 33 urges the jaw away from the plunger 29. The bar 26 slides in an undercut slot in the arbor and thus radial separation of the jaws 35 from the arbor 12 is prevented. T-sectioned ribs 14 on the segments engage undercut slots 13 in the arbor to limit their radial movement.
Patent GB-1328980-A (GB)
Title: Photographing apparatus
IPC: H05B41/32
Filed: 1970-11-20
Abstract: 1328980 Photographic apparatus CANON K K 20 Nov 1970 [20 Nov 1969, 3; 25 Dec 1969] 55199/70 Heading G2A Photographic apparatus comprises a camera in combination with an electronic flash unit having a charge storage capacitor 41, the voltage across which is used via a control circuit 6, 7, 8, 9, 10 to control the time taken for the voltage across a timing capacitor 12 to reach a predetermined value and thus control the exposure time of the camera shutter. The circuit is designed to be used to automatically control exposure times under normal ambient illumination. When switches 16, 28 are set to contact A, thus switching photoconductor 11 in series with timing capacitor 12, and indicator lamp 26 in the collector circuit of transistor 29. When switches 16, 28 are set for flash photography, the voltage across terminals c, d is a function of the terminal voltage across the storage capacitor 41, a neon discharge lamp 45 ensuring that the voltage across terminals c, d remains zero unless the voltage across capacitor 41 is sufficient to permit illumination of the flash tube, whereupon the output voltage gradually increases Fig.1(a) (not shown) or the voltage increases stepwise as described in Specification 1313397 Fig. 1(b) (not shown). In further embodiments described: the timing capacitor 12 is given an initial pro-charge dependent upon the voltage across the charge storage capacitor prior to an exposure operation, Figs. 2-6 (not shown); the initial pre-charge is obtained from an inverted output from the electronic flash unit Figs.7-10 (not shown); the output from the electronic flash unit which may or may not be inverted provides an adjustment of the operating point of the electronic timing circuit Figs. 11-14 (not shown).
Patent GB-1497265-A (GB)
Title: Pregnan-21-oic acid derivatives and the use and manufacture of pregnan-21-oic acid derivatives
IPC: A61P17/00
Filed: 1974-12-23
Abstract: 1497265 Pregnan-21-oic acid derivatives SCHERING AG 23 Dec 1974 [21 Dec 1973 27 Aug 1974 16 Sept 1974] 55527/74 Heading C2U [Also in Division A5] Steroids of the formula  wherein X is H, F or CH 3 ; Y is H, F or Cl; Z is methylene, carbonyl or #-hydroxy- or #- acyloxymethylene, or, when Y is Cl, may also be #-fluoro- or -chloro-methylene, or, when Y is F, may also be #-fluoromethylene; V is methylene, ethylidene (the 16-methyl group having α- or #-configuration) or vinylidene; R 1  is H or acyl; R 2  is H, the cation of a base, or an esterifying group derived from an alcohol; and #<SP>1</SP> is optional are prepared (1) by oxidation of corresponding 2l-ols or their hydrates or hemiacetals with MnO 2  or O 2  in an alcohol containing CN- and buffered to pH 4-7 to give an ester corresponding to the alcohol used; or (2) by oxidation of corresponding 20-ols using MnO 2  or PbO 2  in an inert solvent; or (3) for the 9-Cl compounds, by addition of HOCl, Cl 2  or F and Cl to a corresponding #<SP>9(11)</SP>- steroid; or (4) for the 9-halo compounds, by reaction of the corresponding 9#,11#-epoxides with HF or HCl. Resulting 11#-ols may be oxidized to 11-ones and a #<SP>1</SP>-double bond may be inserted into 1,2-saturated products. The steroids are novel, except for 17α-hydroxy-3,20- dioxo-#<SP>4</SP>-pregnan-21-oic acid and its methyl ester.  Steroids of the formula are prepared by oxidation of the corresponding 21-hydroxy-steroids, using copper (II) acetate and atmospheric oxygen in a C 1-4  alkanol at room temperature for 20-120 minutes. Steroids of the formula are prepared by oxidation of the corresponding 21-hydroxy-20-oxo-steroids using copper (II) acetate in an alcohol at room temperature for several days. The steroids of the first general formula above are anti-inflammatory agents and may be made up into pharmaceutical compositions (see Heading A5B).
Patent GB-1406307-A (GB)
Title: Production of benzylpyrimidines
IPC: C07D239/48
Filed: 1972-12-01
Abstract: 1406307 Antibacterial medicines PLANTEX LTD 1 Dec 1972 [1 Dec 1971 20 Dec 1971] 55597/72 Heading A5B [Also in Division C2] Pharmaceutical compositions in conventional forms for oral administration and having antibacterial activity comprise a compound of formula I wherein R 1  and R 2  are each H, halogen, C 1-5  alkyl or C 1-5  alkoxy and R 3  and R 4  are each C 1-5  alkoxy and a carrier or diluent and optionally a sulphonamide e.g. a sulphamethoxazole or a sulphaquinoxaline.
Patent GB-1337963-A (GB)
Title: Credit card verifier
IPC: G06Q20/40
Filed: 1970-11-26
Abstract: 1337963 Selective signalling K M GOLDBERG 26 Nov 1970 [26 Nov 1969] 56301/70 Heading G4H [Also in Division H1] A credit card verifier unit comprises a plurality of selector means, one for each digit of a multidigit credit card code, and a plurality of individual signal generating means each for generating a signal representing a different value of a digit in the code, each selector means being manually movable in one direction to positions representing the values and movable in a second direction to operate the signal generating means associated with the value to which the selector is set. Of eleven slide-buttons, each having ten possible positions, one is set to indicate the identity of the credit card issuing company and the other ten in accordance with the credit card number. A roller is moved across to depress the slide-buttons in turn so that the first slide-button produces one of ten tones and the other ten each depress one (according to the setting of the slidebutton) often bars shared between the ten slidebuttons to generate one of ten tones for each of these ten slide-buttons. The tones are transmitted over a telephone line, microwave link, or cable to a central processor which can send back a respective tone to energize a yes or no lamp. A ready and a repeat lamp can also be energized under the control of the central processor, the former in response to a tone or tones sent to the central processor in response to an access button initially. The repeat lamp is also energized by a timer if the central processor does not energize the yes, no or repeat lamp within ten seconds of energization of the ready lamp. The signals sent to the lamps also control retractable stops for the roller. The positions of the slide-buttons are indicated on numeral drums. An imprinter for imprinting from the credit card on to an invoice may be provided having a roller linked to the slide-buttons roller. Alternatively, each of the ten slide-buttons, when depressed by the roller, may close contacts to actuate the tone generators.
Patent GB-1241227-A (GB)
Title: Device for the switching on and off of components in a works gas chromatograph
IPC: G01N30/86
Filed: 1968-11-27
Abstract: 1,241,227. Gas chromatography. VEBA CHEMIE A.G. Nov.27, 1968 [Nov. 29, 1967], No.58368/68. Heading G1N. [Also in Division B1] When a gas component arrives at the detector 1 of a gas chromatograph 2 the output from the amplifier 3 charges a capacitor 5 and the voltage drop across a series diode 4 is negligible. Thus, relay 6 in parallel with the diode is not energized, and its contacts 7 are closed to allow the detector output signal to reach a recorder 8. When the peak of the elute curve is passed the capacitor charging current ceases, and a potential difference appears across the diode, which energizes the relay and contacts 7 open to stop the recording. The diode may be replaced by a resistor associated with a polarized relay, or by a centre zero meter with switch contacts on either side of the zero, or the recorder may be switched on by a timing signal and switched off as above when the maximum signal has passed.
Patent GB-566655-A (GB)
Abstract: 566,655. Gyroscopic apparatus. JACK & HEINTZ, Inc. Jan. 5, 1943, No. 200. Convention date, Jan. 5, 1942. [Class 97 (iii)] [Also in Group XXXIV] A shock-absorbing device for a gimbal ring, suitable for use in the directional gyroscope of an automatic pilot, comprises a cage 33 or 45 containing a spring-actuated block 36 or 50 which presses upon a ball 32 or 43 interposed between the block and the trunnion 14 or 15 of the gimbal ring 10, and a screw 41 or screwthread 45<1> for adjusting the position of the cage and simultaneously varying the pressure of the block to render the bearing rigid under normal operation, but to permit it to yield and absorb the shock if an abnormal end thrust occurs. The gimbal ring 10, in the form of a housing for the rotor 1, is made of magnesium and the trunnions 14, 15 and parts 22, 26 of the bearing assembly are made of steel. In order to compensate for the effect of variations of temperature and to maintain constant bearing clearances at the trunnions, the adjusting screw 41 is made of aluminium.
Patent GB-1460149-A (GB)
Title: Moulding reinforced concrete articles
IPC: B28B23/06
Filed: 1973-12-07
Abstract: 1460149 Moulding prestressed concrete in a procession of moulds DOW-MAC CONCRETE Ltd 6 Dec 1974 [7 Dec 1973] 56811/73 Heading B5A Reinforcing wires are tensioned by devices 13 (Fig. 2) above a moulding bed 10. Moulds 1 for sleepers or beams are successively raised by a table to surround the wires at the right hand end of the bed 10, and coupled together and moved by a winch to the left until the bed is filled with moulds. A hopper fills all the moulds 1 with concrete, and vibration is applied from a table in the bed 10 (which comprises a pit), or by attached mould vibrators. Steam is passed through the bed pit 10 by pipes while the moulds are covered (20) (see Fig. 5, not reproduced), the reinforcing wires are detensioned, and severed between each mould by a disc cutter 21. A table 22 lowers the moulds successively from the left hand end of the bed, the wire ends are ground away, and the moulds 1 inverted, emptied and cleaned. Each mould 1 comprises a ganged series 2 (Fig. 3) having end walls each comprising a pair of fixed 3 and removable 4 slotted plates that locate the reinforcing wires.
Patent GB-1436394-A (GB)
Title: Simplex arq system
IPC: H04L1/18
Filed: 1973-12-07
Abstract: 1436394 Data transmission OKI ELECTRIC INDUSTRY CO Ltd 7 Dec 1973 [12 Dec 1972] 56845/73 Heading H4P In a two way simplex "automatic repetition" error correcting system a separate control signal sent from a slave station indicates if a block of characters has been transmitted correctly or incorrectly, the number of characters in a block being varied from one integral number to another dependent on transmission quality as determined by a set number of characters correctly received. In the embodiment change is made from mode 1=3 bits/ character to mode 2=15 bits/character. The higher number may be an integral multiple, and particularly an odd multiple of the lower number, e.g. 15 : 3 this being stated to simplify design relative to an even multiple. In embodiment, a two way simplex short wave radio link is employed. At the master transmitter start/stop bits are removed and remaining 5 unit code is converted into 7 unit constant ratio having a fixed 1/0 ratio for all combinations i.e. 4 marks/3 spaces. On correct reception, after reconversion to 5 unit code S/S bits are restored and data is passed to a device, e.g. a printer, and alternate CS1, CS2 signals are transmitted back; on incorrect reception, a second CS1 or CS2 signal, as appropriate, is transmitted back to the master station. Selection may be manual, or automatic through OR 154 which enables AND 151 thus setting flip-flop 158 which causes an α signal to be transmitted to the slave, which responds with a CS3 which sets flip-flop 159 causing a # signal to be transmitted which sets the receiver to the alternative block number; also receipt of a CS1 signal triggers flip-flop 160 to the other position causing master block number to be changed to 15. A counter 161 indicates number of characters received correctly without a break; when it reaches a set value flip-flop 157 is reset causing change to 15 character blocks.
Patent GB-1327105-A (GB)
Title: Bag with cross-bottom folding
IPC: B65D30/18
Filed: 1970-12-02
Abstract: 1327105 Bags WINDMOLLER & HOLSCHER 2 Dec 1970 [7 Jan 1970] 57296/70 Heading B8K A bag is made from an open ended tube of paper or plastics film, the tube having a coating of adhesive extending without interruption around the outside of the base of the tube, which is folded to form side folds 16 and 17, and end folds 19 stuck by the adhesive to the outside of the side folds. Each end fold may have a rectangular flap 18. The side folds may abut or overlap each other. The adhesive may be a heatactivated or a self adhering adhesive. In the latter case the inside surface of an overlapping side fold and of the rectangular flaps 18 may be surface activated by a corona discharge. A cover sheet may be stuck over most of the side and end folds.
Patent GB-1411602-A (GB)
Title: Method and system for processing seismic data
IPC: G06F3/05
Filed: 1972-12-13
Abstract: 1411602 Seismic signal processing TEXAS INSTRUMENTS Inc 13 Dec 1972 [30 Dec 1971] 57468/72 Heading H4D An interactive device, comprising a stylus movable by an operator over a graph of seismic velocity versus seismic energy travel time, is used for data input into a computer controlling the display of computed velocity functions, whereby the effect which changes in the input data have on the computed functions can be readily observed. In one embodiment the graphical input data for a given region along a seismic survey line results in the Fig. 2 display, on a first storage tube screen, of an RMS velocity function with "breakpoints" 50, 52 ... 70 linked by vectors, of an interval velocity function 72 ... 74, and of numerical values of RMS and interval velocity and associated times. By using further graphs for other regions (i.e. other depth points along the survey line) for input to the computer there are built up, on second, third and fourth storage tube screens, displays of RMS velocity in travel-time versus depth-point co-ordinates (Fig. 3, not shown), of interval velocity in traveltime versus depth-point co-ordinates (Fig. 4, not shown) and of interpolated RMS velocity contours in travel-time versus depth-point coordinates (Fig. 5, not shown). If the interactive device is used to substitute graph breakpoints in region 76 for those in regions 62, 64 of Fig. '2 as computer input data, the Fig. 2 display is updated at 76 and 78 and the other displays are modified concurrently by the computer. This assists the selection of breakpoints to determine velocity profiles which give best continuity over the survey line or which best fit available velocity data for the surveyed region. The breakpoint substitution may be an incremental semi-automatic process initiated by the operator. Permanent records of the displays may be printed out if the operator so chooses. A detailed flow chart of the complete system operation is given (Figs. 6 to 10, not shown).
Patent GB-1340021-A (GB)
Title: Capacitor charge and discharge circuits
IPC: H03K4/50
Filed: 1970-12-03
Abstract: 1340021 Line time base oscillator; AFC systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 Dec 1970 [6 Dec 1969] 57508/70 [6 Dec 1969] Headings H3T and H3A In a time base circuit incorporating semiconductor switches 10, 11, 15, 19 and 22 for the periodical charging and discharging of a capacitor 1, stabilization of the discharge period against variations in temperature and supply voltage is achieved by providing a plurality of semi-conductor devices 3-19 so that the charge voltage produced across the capacitor 1 is equal to the discharge voltage for capacitor 1 present across a leakage resistor 2. During a scan or discharge period, transistors 11, 15 are bottomed and transistors 10, 19 and 22 are switched off and with capacitor 1 discharging via a transistor 3, a given value of the collector voltage of 3 is arrived at which the threshold levels of conduction of transistors 11, 15 are reached at which transistors 11, 15 are switched off and transistors 10, 19 and 22 are turned on. During the flyback or charge period, capacitor 1 charges up from the supply source via switch transistors 19, 10 and 22. The charge period is completed at the instant a reduction in the base voltage of transistor 3 tending to cut it off increases its collector voltage to such a value as to turn transistors 11, 15 on and transistors 10, 19 and 22 off. The whole circuit except resistor 2 and capacitor 1 may be formed as an integrated circuit using transistors having same base emitter voltage characteristics. The required scan waveform 31 may be derived from the basic time base circuit via elements 24-30. A stabilized supply for the time base circuit may be derived from the generated waveform 31 and applied to the circuit via an arrangement involving inverter transistors 39, 40. When the arrangement is switched on, an unregulated voltage V 1  is applied via transistor 39 and as the time base is activated, a higher stabilized voltage V 2  is applied via transistor 40. Synchronization of the time base to incoming synchronizing pulses is achieved via a phase discriminator 32 and a long-tailed pair 35-38 by controlling the conduction of diode connected transistors 5-7 and hence the discharge voltage available at the emitter of 7. The discharge period is thus increased or decreased for frequency and phase control.
Patent GB-1402530-A (GB)
Title: Detecting damage to glass
IPC: G08B13/04
Filed: 1971-12-10
Abstract: 1402530 Intruder alarms MICROWAVE & ELECTRONIC SYSTEMS Ltd 8 Dec 1972 [10 Dec 1971] 57598/71 Heading G4N Apparatus for detecting damage to sheet material, e.g. glass, capable of propagating wave energy at ultrasonic frequencies comprises: a transducer 11 attached to a sheet of material 14 to provide electrical signals corresponding to vibrations propagated in the sheet; a filter 32 responsive to the electrical signals and stopping frequencies less than 100 kHz; and means responsive to the filtered signal to provide an output. Signals from a number of piezoelectric transducers at locations 10a...10c are combined at 22 and, after passing through high-pass filter 32, are applied to two amplifiers 33, 53. Frequencies corresponding to the cutting of glass are detected at 34 and shaped into rectangular pulses by Schmitt trigger 36. The output of the trigger 36 is fed to an integrator 38, e.g. a diode transistor pump which, after a predetermined number of pulses have been received, produces an output of sufficient level to operate threshold circuit 42 and energize alarm relay 44. Higher level signals produced by breaking of the glass are fed through the channel comprising amplifier 53, detector 54 and Schmitt trigger 56, the amplitude of the output from trigger 56 being large enough for the integrator 38 output to operate threshold 42 immediately instead of after a delay. The link between the transducers and the unit 22 may be radio or cable. If cables are used, further circuitry 50, 51 may be provided to initiate an alarm in the event of tampering with the cables. In a modification, Fig. 3 (not shown), the trigger 36 is omitted, and the same channel is used for the cutting and shattering signals since the signals at the integrator input are then amplitude dependent.