baber/WOPTO huggingface dataset:
Patent GB-1340012-A (GB)
Title: Overload protection for presses
IPC: B21D55/00
Filed: 1971-04-19
Abstract: 1340012 Overload protection for press MASCHINENFABRIK WEINGARTEN AG 19 April 1971 [4 Feb 1970 12 Feb 1970] 20892/71 Heading B5F A multiple tool press in which a ram carrying a plurality of tools is displaced by a plurality of driving members (e.g. a connecting rod at each end) is provided with overload protection for each tool and also for each driving member, the overload protection being arranged to stop the press when an individual tool is overloaded or an individual driving member is overloaded. The overloading of a driving member may be detected either by summating the resultant pressure of the associated tools or by associating a detecting device with each individual driving member. The former method is used in Fig. 1, in which a ram is connected to each tool via a piston 1 and cylinder 2 between which is fluid pressurized to a predetermined level by means of a fluid line 12 fed from a reservoir 6 through non-return valves 5 and 10. In the event of overloading of an individual tool the excess pressure causes the piston to lift to operate a limit switch, the pressure being relieved through valve 13. Overloading of a driving member is prevented by extending the pressure lines 12, 12a and 12b of the tools associated with that driving member and terminating them in a common cylinder 17 enclosing piston 18. The total pressure of these three lines is transferred to the base of the piston 18 via plungers 16, 16a and 16b and is balanced by a pre-set pneumatic pressure from air supply 23. If this balancing pressure is exceeded the piston 17 lifts to operate a limit switch 21 and the plungers 16-16b lift to relieve fluid pressure through a connecting chamber to return line 22. In an alternative arrangement (Fig. 2, not shown), the summating piston and cylinder device 17, 18 is replaced by individual strain gauges on each connecting rod, the signals therefrom being amplified to operate an overload trip. The Specification states that the individual fluid-pressure overload devices could be replaced by any other pressure responsive devices, e.g. strain gauges, the outputs therefrom being fed to a summating device. Alternatively mechanical overload devices could be used.
Patent GB-1312477-A (GB)
Title: Hydraulic cylinder apparatus
IPC: B30B15/04
Filed: 1970-05-01
Abstract: 1312477 Hydraulic presses VERSON ALLSTEEL PRESS CO 1 May 1970 [11 June 1969] 21066/70 Heading B5F An hydraulic press comprises a cylinder body having a large diameter open ended portion 22 connected to a small diameter portion 23 which is closed at one end, a piston body comprising a large diameter piston 25, a small diameter piston extension 26, and an intermediate diameter ram extension 27, and means are provided at both ends of the piston body for guiding longitudinal movement thereof. The ram extension 27 forms the movable platen of the press, the platen 16 being stationary. As shown, the guide means for the ram extension 27 comprises a plurality of circumferentially spaced rollers 46 adjustably mounted on brackets 34. The guide means for the piston extension 26 comprises a bushing 58 but it may comprise rollers similar to those for the extension 27. A key (55) engaging a keyway (56), Fig. 5 (not shown) in the ram extension 27 prevents rotation of the piston body.
Patent GB-1271524-A (GB)
Title: A method for finding the condition characteristics of rail tracks, and the assesment of rail tracks, and the evaluation of the characteristics
IPC: B61K9/08
Filed: 1969-04-25
Abstract: 1,271,524. Deriving safe speeds from track condition. F. PLASSER. 25 April, 1969 [25 April, 1968], No. 21167/69. Heading B7N. A method of operating traffic over a railway track at safe speeds comprises the steps of plotting on a graph a curve relating track errors and maximum safe speed whose equation is:- wherein y is the maximum permitted error in mm. for the value x between 0 and 1; f max is maximum permitted track error in mm. for the value x = 0; a is the maximum permitted tolerance in mm. for new or relaid tracks; x = V/Vp, where V is maximum safe speed in km./h. as a function of error y and Vp is the maximum possible speed in km./h. measuring the track errors and deriving from the graph the corresponding values of safe speed and then operating traffic over the track up to said derived safe speed. The Specification describes how the derived values of safe speed are used to define safe speed track stretches and also how a condition index may be obtained by multiplying the length of a track stretch by its maximum safe speed and dividing this by the length multiplied by a theoretical maximum speed.
Patent GB-315575-A (GB)
Title: Improvements in golf balls
IPC: A63B37/00
Filed: 1928-07-21
Abstract: 315,575. Dunlop Rubber Co., Ltd., and Stuart, T. July 21, 1928. Balls.-The surface of a golf ball has recesses therein which are other than circular in plan, and which have disposed within them one or more convexities of pyramidal shape. In the example shown in Fig. 1. the recesses 1 are square, the pyramids being either pointed as shown or truncated. The corners of the recesses 1 (as viewed in plan) and the apex and the edges of each pyramid 2 may be rounded off. The sides 3 of the pyramids may rise directly from the feet 4 of the sides of the recesses as shown in Fig. 2, or there may be a space 5 between the sides of the recesses and of the pyramids 11, as shown in Fig. 3. The sides of the pyramids and of the recesses may be curved or straight, and the peaks of the pyramids may be coterminous with the normal surface of the ball. The pyramids may have auxiliary markings and each recess may contain more than one pyramid. The recesses may be applied over the whole ball or only in belts.
Patent GB-777583-A (GB)
Title: Colour photographic process
IPC: G03C5/26
Filed: 1954-07-21
Abstract: 777,583. Colour photographic process. BESWICK, G. E., GANGUIN, K. O., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 13, 1955 [July 21, 1954], No. 21231/54. Class 98(2) An exposed multilayer or multi-particle differentially sensitized gelatino-silver halide material containing colour formers is treated with an alkaline solution of formaldehyde and an inorganic sulphite after colour development, treatment which arrests development and hardens the gelatin, thus differentiating from acid solutions of formaldehyde which are not effective as gelatin hardening agents; and having the further advantage that in the presence of the sulphite the formaldehyde does not react with developer amine to form an insoluble aldehyde-anil. The invention is further described with reference to Specifications 698,046 and 723,171 which use a yellow styryl dye-colour former for masking purposes in the magenta layer, and the latter of which uses colour formers in the cyan layer which are phenols and 1 - naphthols unsubstituted in the 4 position to the OH group, whereby unused colour former and an amine as of the developer react with formaldehyde to produce the leuco form of reddish dyestuff and which latter is oxidized to dyestuff in the bleaching bath to constitute a masking image in such cyan layer. The solution for the purpose comprises formaldehyde, sodium sulphite, sodium bicarbonate, sodium carbonate and potassium bromide. Substances such a hypo can be added is desired.
Patent GB-729011-A (GB)
Title: Improvements in or relating to control systems for electric motors
IPC: B60L9/26
Filed: 1953-07-31
Abstract: 729,011. Transformers. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 31, 1953 [Aug. 9, 1952], No. 21246/53. Class 38 (2). [Also in Group XXXVII] An electric motor control system comprises a tapped single phase transformer, the tap switches connected thereto being operated by means of a motor controller which causes the tap switches to be operated in pairs to energize an autotransformer thereby to cause a progressively increasing voltage to be applied to the motor, movement of the controller after the highest voltage tap has been reached causing a shunt to be put across the motor field and at the same time connecting a lower voltage tap to the autotransformer, which is energizing the motor, so as to avoid undue current surges in the motor windings. The higher voltage tap may be subsequently re-connected to the motor circuit. A single phase transformer 23 is energized from an A.C. source 22, the secondary winding 24 of the transformer being tapped identically on either side of a centre tap X which is connected to one of the terminals of a series-type commutator motor A. Each tap T1 . . . T13 or T1<SP>1</SP> . . .T13 is connected to the contacts of two electromagnetic tap switches, e.g. tap T1 is connected to switches C1 and C2 and so on. Movement of the motor controller MC causes the energization in pairs of a series of quick-acting auxiliary relays X1 . . . X14 which cause the slower-acting tap switches C1 ... C14 to be energized thereby increasing the voltage alternately on the terminals 25, 26 of a centre-tapped autotransformer PC which centre tap supplies, through rectifiers 67, 67<SP>1</SP> the other terminal of the motor A. When the highest tap T13 is connected to both terminals 25, 26 of the autotransformer PC further movement of the controller MC causes a shunt circuit 34 to be placed across the motor field 29 and at the same time reduces the voltage applied to the autotransformer to that of the tap T11. Further movement of the motor controller MC restores the connection of tap T13 to the autotransformer. During the transition period when the field is being shunted a power interruption is avoided by the circuits 51, 52 comprising a number of interlock contacts on the relays concerned in the voltage-reducing operation so as to allow the two tap switches C12, C13 to be operated during the same period of time.
Patent GB-479289-A (GB)
Title: Improvements in plug and socket electric connectors
IPC: H01R13/18
Filed: 1936-07-31
Abstract: 479,289. Two-part couplings. STOKES, H. July 31, 1936, No. 21256. [Class 38 (i)] A split socket 1 is fitted with a ferrule 5 to limit the spread of the socket and press resiliently upon it. The ferrule has a resilient split portion 6 that enters a groove 7 on the socket, the part 8 being reduced in diameter so that the ferrule can be equal in external diameter to the socket body. Specifications 369,210, 402,474, 414,115, and 426,903 are referred to.
Patent GB-222114-A (GB)
Title: Improvements in or relating to dental spittoons
Filed: 1924-09-09
Abstract: 222,114. Pieper, A. F. Sept. 20, 1923, [Convention date]. Drawings to Specification. Combinations of interdependent valves; lift valves.-The Specification as open to inspection under Sect. 91 (3) (a) comprises the subjectmatter of Specification 237,631. This subjectmatter does not appear in the Specification as accepted.
Patent GB-721207-A (GB)
Title: Manufacture of alkoxy-aldehydes
Inventor: BEWLEY THOMAS
Filed: 1951-09-11
Abstract: b -Methoxy or b -ethoxy propionaldehyde are made by bringing a stream of acrolein into contact with methanol or ethanol at -15 DEG -+30 DEG C. in the presence of a small amount of an alkaline condensation agent, maintaining an excess of alcohol over acrolein in the reaction mixture so that the molar ratio of alcohol is more than 3 mols to 1 mol. of aldehyde, bringing the pH of the reacted mixture to below 7.5, separating the alkoxy-propionaldehyde together with the unreacted alcohol from the salts in the reaction mixture by rapid distillation such that the mixture to be distilled remains in contact with the heated surfaces of the evaporator for less than 20 minutes and subjecting the salt-free distillate to fractional distillation. The proportion of acrolein to alcohol used is preferably such that not more than 2 per cent of free aldehyde is present in the reaction mixture. Where the pH is adjusted to 6.5-7.5 the contact time with the heated surfaces should be less than 20 minutes, preferably less than 10 minutes, at lower pH adjustments, however, the contact time should be less than 30 seconds and preferably less than 4 seconds for low pH's.  Flash distillation or climbing or falling film evaporators may be used.  Distillation equipment should be free of copper and mild steel.  Changes of pH during distillation may be avoided by using acids such as phosphoric and organic acids for neutralisation since they yield buffered solutions.  When neutralisation is effected with strong mineral acids pH's of 6.5-7.5 should be attained, with phosphoric acid a pH of 4.0 may be tolerated and with acids such as acetic, formic or oxalic acids, pH's of 2.5 may be used.  In examples acrolein is reacted with methanol in the presence of potassium hydroxide, the product neutralized with (1) phosphoric, and (2) acetic acids and recovered via distillation through a climbing film evaporator.  It is stated that ethanol may be used instead of methanol in the above examples.
Patent GB-262050-A (GB)
Title: Improvements in or relating to sheet metal folders
IPC: B21B47/02
Filed: 1926-08-30
Abstract: 262,050. Krupp Grusonwerk Akt.- Ges., F. Nov. 26, 1925, [Convention date]. Angular bending. - The folding flaps 10, 11 and the wedge shaped pressure ledge 6 of a device for folding metal sheets are operated by rods 7 4 and cranks 3, 2 on one common shaft 1, the cranks being so arranged that the ledge holds the sheet as soon as the folding flaps begin to move until the folding of the sheet is almost complete. The connecting rods 7, 4 may be of telescopic construction with interposed springs, and the folding flaps 10, 11 connected to the rod 7 by crossed links 8, 9.
Patent GB-1434633-A (GB)
Title: Flowmeter circuits
IPC: G01P5/00
Filed: 1973-05-04
Abstract: 1434633 Ultrasonic measurement of fluid flow DANFOSS AS 4 May 1973 [5 May 1972] 21358/73 Heading H4D  A fluid flow meter comprises first and second transducers, one up and one down stream, sound being transmitted up stream and then down stream, a voltage controlled oscillator (V.C.O.) a divider for providing a delayed reference pulse derived from the V.C.O., a circuit for measuring the time difference between a received pulse and the reference pulse, means for altering the frequency of the V.C.O. to bring the reference and received pulses into time coincidence, and means for counting pulses from the V.C.O. during a set interval during both upstream and downstream transmission periods when the reference and received pulses are in time coincidence, the difference in up and down stream counts being obtained to indicate flow rate. A V.C.O. 10 feeds a divider 21, a device 12 co-ordinating the energization of the divider and a pulse generator 13 feeding a transmitter pulse amplifier 24. Switches K1, K2 are energized so that transducers 14, 18 reverse their transmitting receiving roles in alternate periods. The divider has a set division ratio and thus provides a delay dependent on the V.C.O. frequency. The received pulse is passed to amplifier 33 and detector 35. A differentiator 39 and comparator or threshold device 40 can be coupled via a switch to either gate 42 or directly to circuit 20. Circuit 34, a cross-over detector, provides pulses to a gate 42 at the frequency of the oscillatory components of the received pulse. Gate 42 is enabled by the output from device 40 and enables a well defined pulse representing the time of arrival of the received pulse to be obtained. If the fluid contains a relatively high density of sound scatterers the signal from device 40 is connected directly to circuit 20. In this case the received signal would contain a lot of noise and render operation of circuit 34 unreliable. An a.g.c. controls receiver amplifier 33 and transmitter amplifier 24 (via a.g.c. 81). An alarm 82 provides a signal if amplifier 24 is driven to maximum gain. A further alarm 25 provides a signal if the system does not track the received pulse, i.e. if no attempt is made to bring the received and reference pulses into time coincidence. Circuit 20 determines the time relationship of the received and reference pulses and causes a circuit 46 to direct a constant charge pulse to the inverting or non-inverting input of an amplifier 47 depending upon the late or early nature of the received pulse. Amplifier 47 feeds an integrator 48 which controls V.C.O. 10. The V.C.O. frequency is increased if the received pulse is early and decreased if it is late. The received and reference pulses are therefore brought into coincidence. In this condition, circuit 11 provides counts over a set period in each up or down stream transmission period. The counts are subtracted to give an indication of flow rate. Detailed circuits of the various system components are given.
Patent GB-841273-A (GB)
Title: Improvements in or relating to the production of animal feed
IPC: A23K10/16
Filed: 1958-07-04
Abstract: An animal feed comprises beet leaves or beet leaf silage and the mycelium of Aspergillus niger obtained from a citric acid fermentation culture.  The mycelium incorporated is preferably dried and sterilized; 20-200 mg. of dried mycelium per animal per day may be fed.  Salt mixtures containing trace elements, exemplified by a calcium carbonate, calcium phosphate, sodium chloride, magnesium sulphate, and iron, copper, manganese and cobalt salt formulation, may be incorporated.
Patent GB-1500549-A (GB)
Title: Battery charging circuit
IPC: H02J7/00
Filed: 1975-05-20
Abstract: 1500549 Battery charging circuits GATES RUBBER CO 20 May 1975 [10 June 1974] 21506/75 Heading H2H A battery charging circuit comprises a source 10 of direct charging current, a transistor Q1, a resistor network R4-R6 connectable across the battery for producing a voltage proportional to the battery voltage, a transistor Q3 for comparing the proportional voltage with the voltage across a non-linear reference element D9 to produce a control signal representative of the difference between the voltages and a transistor Q2 responsive to the control signal to cause conduction or non-conduction of the transistor Q1. If a discharged battery 16 is connected to the charging circuit, the transistor Q3 is non- conductive so that the transistor Q2 conducts and the transistor Q1 is therefore conductive. A high charging current is supplied to the battery and in view of the conduction of the transistor Q2 a relatively high current flows through the reference element in the form of a diode D9. When the battery voltage reaches a first predetermined value, the state of the transistors is changed and the battery is supplied with a trickle charge via a resistor R2. In view of the conduction of the transistor Q3 and the non-conduction of the transistors Q1, Q2 a reduced current flows through the diode D9 via a resistor R3. The charging circuit does not therefore restore the charging current to its high level until the battery voltage has fallen to a second predetermined value which is less than the first predetermined value. The circuit is temperature compensated to enable the battery to be charged to a higher voltage if the ambient temperature is low and vice-versa. Diodes D5, D6 limit the current through the transistor Q1 and may be replaced by a light emitting diode.
Patent GB-1133255-A (GB)
Title: Making foundry cores and moulds
Inventor: GODDING RONALD GEORGE
IPC: B22C5/12
Filed: 1966-05-14
Abstract: 1,133,255. Making moulds and cores. BRITISH CAST IRON RESEARCH ASSOCIATION. 5 May, 1967 [14 May, 1966], No. 21507/66. Heading B3F. In a method of making cold setting sandbased foundry cores or moulds, two separate measured charges of sand are provided, one containing a resin, the other containing a catalyst, the two charges being blown simultaneously into a common mixing chamber and the resulting mixture being almost immediately blown into a mould or core box. The two charges are deposited from their respective hoppers 1 into measuring chambers 2 which are telescopically adjustable to permit charges of different volume to be used, the supply from the hoppers being cut off by valve 5. Valves 6 at the bottom of the mixing chambers are opened to allow the charges to enter a blowing chamber 7. With the valve 6 closed, air is admitted from the reservoir 8 to blow the charges into a common mixing chamber 10 which is provided with baffles 11 and 12 to promote thorough mixing of the charges. The resulting sand mixture is immediately blown. to a core blowing head for blowing into the core or mould box 17.
Patent GB-1520965-A (GB)
Title: Opto-electronic sensors
IPC: H01L29/10
Filed: 1976-05-25
Abstract: 1520965 Opto-electronic devices SIEMENS AG 25 May 1976 [20 June 1975] 21555/76 Heading H1K An opto-electronic sensor comprises a layer 1 of doped semi-conductor material having at least one electric contact 11, and light-transmitting and electrically insulating layers 2, 3 on opposite faces thereof, the layer 2 being provided with at least one row of electrodes 21-26 and the layer 3 which is covering the entire face of the semiconductor layer, being provided with a light-transmitting electrode 4 electrically connected to the semi-conductor layer 1 via a diode. Preferably, the semiconductor layer is less than 10 Ám thick. A PN junction diode is formed by providing a region 5 of a conductivity type opposite to that of the semi-conductor layer 1, the region 5 being connected to the electrode 4 by means of an ohmic contact 41. During image recording charge carriers produced by light irradiated from the direction of either the electrode 4 or the row of the electrodes 21-26, are trapped in potential wells formed below one or more electrodes 21- 26. Also a depletion zone extending from the electrode 4 and preferably spaced from the potential well is formed by applying a suitable voltage for the electrode 4, Fig. 2 (not shown). Stored information is read-out by applying timing pulses to the row of electrodes 21-26. Other operating conditions for information read-out are described.
Patent GB-588819-A (GB)
Title: Improvements in buoyant electric cables
IPC: H01B7/12
Filed: 1943-12-23
Abstract: 588,819. Supporting electric cables. OKONITE-CALLENDER CABLE CO., Inc. Dec. 23, 1943, No. 21568. Convention date, Feb. 6. [Class 36] The sealed cells forming the core of a buoyant electric cable are made of a plastic, such as a cellulose nitrate and are separated' by resilient spacers. The cells are braced by internal end discs or by surrounding sleeves of plywood. As shown, the plastic cylinders 2 have plastic heads 4, sealed by a cement or a solvent, and plywood reinforcing discs 6. The spacers 8 may be of inflated or cellular rubber with a skin 10, a flexible sheath 14 of rubber being bonded to the spacers to form a series of dams. The cells may be further strengthened by an internal pressure up to 100 lbs. per sq. inch. The cable is completed by a stranded conductor 12 and a sheath 16, such as rubber. Specifications 585,786 and 588,436 are referred to.
Patent GB-571965-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K16/00
Filed: 1943-12-24
Abstract: 571,965. Cores for dynamo-electric machines. HOOVER, Ltd., WHITE, A. W., and GILSON, R. J, Dec. 24, 1943, No. 21581. [Class 35] [Also in Group XXII] A dynamo-electric machine has at least two yokes separated by a non-magnetic spacer cast in position in such manner that it overlaps the adjacent ends of the yokes. In the form shown, the yokes A, B with flanges A<1>, B<1> are placed on a split core E in a mould D providing a cavity D<1> for the aluminium forming the spacer. The adjacent ends of the yokes may be drilled, knurled or similarly formed to interlock with the spacer. The spacer may be die cast if desired.