baber/WOPTO huggingface dataset:
Patent GB-519747-A (GB)
Title: Improvements in or relating to electron discharge apparatus
IPC: H01J43/30
Filed: 1938-09-30
Abstract: 519,747. Circuits for electron multipliers. KOLSTER-BRANDES, Ltd., and BEATTY, W. A. Sept. 30, 1938, No. 28484. Drawings to Specification. [Class 40 (v)] In a high frequency system in which the phase shift introduced is required to have a required prescribed relation to another variable characteristic of the circuit, an electron multiplier or other electron discharge device with a controllable electron transit time/frequency characteristic is used for phase shifting and its characteristic and the variable characteristic to which the phase shift is to be related are mechanically or electrically linked for simultaneous operation. The phase shift in one circuit may be given a prescribed relation to the phase shift in another circuit by providing an electron multiplier in each with common control means. The variation in the characteristic may be effected as described in Specification 495,839 and regeneration at some and degeneration at other frequencies may take place. The invention may be applied to an oscillator as described in Specification 454,902 in which the grid oscillates in phase with the anode and the tuning adjustment be ganged with the anodesupply potentiometer. Alternatively, the invention is applicable to a multiple-unit steerable antenna system in which electron multipliers are used as the phase shifters.
Patent GB-485652-A (GB)
Title: Improvements in and relating to telephone systems and the like
IPC: H04Q1/446
Filed: 1936-10-20
Abstract: 485,652. Exchange systems. TELEPHONE MANUFACTURING CO., Ltd., and PADDLE, L. H. Oct. 20, 1936, No. 28506. [Class 40 (iv)] [Also in Group XL] In an alternating current signal receiver for use in telephone and like systems and which discriminates against current of signal frequency present in the speech or other band transmitted over the system, the receiving relay has two windings controlled respectively by a circuit tuned to the signalling frequency and by a circuit over which the whole of the transmitted band is fed. In the particular arrangement described, the winding controlled by the second of the above circuits is also differentially controlled by a further circuit tuned to the signal frequency. The receiver comprises a valve V1, which may be a pentode, having two transformers T1, T2, in its anode circuit, the primary of T1 being tuned to the signalling frequency whereas T2 is responsive to a broad band including the signalling frequency. The output of secondary S1a of T1 is rectified and applied directly to a winding of relay SR whereas the outputs of S1b and S2 are rectified and used to control the bias of valve V2 in opposite senses, the output from S1b tending to increase anode current. On arrival of signalling frequency containing not more than 10 per cent harmonics in addition, the left hand winding of SR is energized and the effects of the rectified outputs of S1b and S2 neutralize and leave normal anode current over the right-hand winding of SR which pulls up. If more than the above proportion of extraneous frequencies is present, the rectified output of S2 preponderates and produces a net negative change of bias, SR remaining inoperative. The relay may be differentially wound if the polarities of rectifiers M2, M3 are the reverse of those shown. To avoid difficulties due to different time constants of the circuits of rectifiers M2, M3, condensers C2, C3 may be replaced by a single condenser. The normal bias of valve V2 may be zero, the effect of positive increase of grid bias being reduced by grid current so that increase of negative bias has a greater effect.
Patent GB-1001713-A (GB)
Title: Naphthalene compounds
Inventor: HARTLEY SIDNEY
IPC: C08K5/3492
Filed: 1962-07-25
Abstract: The invention comprises the compounds of formula <FORM:1001713/C2/1> where R is alkyl, R1 is hydrogen or alkyl, or R and R1 are together CH2CH2, and A is N or CH, and where the naphthalene nucleus may contain other alkyl groups or halogen atoms; and their preparation by reacting cyanuric chloride or 2,4,6-trichloropyrimidine with a 1-alkylnaphthalene or acenaphthene in the presence of a Friedel-Crafts catalyst, e.g. in an inert solvent at 0-100 DEG  C. The compounds of the invention are whitening agents (see Division D1).  Specification 985,484 is referred to.ALSO:Polymeric materials are whitened by incorporating into them a compound of formula <FORM:1001713/D1-D2/1> where R is alkyl, R1 is hydrogen or alkyl, or R and R1 are together CH2CH2, and A is N or CH1 and where the naphthalene nucleus may contain other alkyl groups or halogen atoms (see Division C2); e.g. by heating materials made of the polymer with an aqueous dispersion of the whitening agent. Surface-active materials and other whitening agents, such as substituted 4, 41-ditriazinylaminostilbene-2, 21-disulphonic acids, or disperse dyestuffs may also be present.  Specified polymeric materials are polyamides such as polyhexamethylene adipamide, polyesters such as polyethylene terephthalate, polyurethane, polyacrylonitrile and hydrolysed polyacrylonitriles, polymethyl methacrylate, polystyrene, polyethylene, polypropylene, secondary cellulose acetate, cellulose triacetate, regenerated cellulose such as viscose, cotton, paper, silk and wool.  Specification 985,484 is referred to.
Patent GB-688183-A (GB)
Title: Improvements in or relating to a method of extracting copper
IPC: C01G3/00
Filed: 1951-12-06
Abstract: Copper is extracted from ores, concentrates &c. containing copper sulphide, and may be also copper oxide or carbonate or metallic copper, by subjecting the material to active agitation in finely divided form in suspension in an aqueous solution containing ammonia and ammonium carbonate in the presence of oxygen-bearing gas, e.g. air or oxygen or mixtures thereof, introduced as small bubbles. These should be less than 1/16 inch diameter, and the volume thereof of any moment should be greater than 27 per cent of the volume of the mixture.  The air &c. may be introduced through a wall of porous material.  A mechanical stirrer may be employed.  The ore &c. particles should be finer than 200 mesh per linear inch.  The leaching solution contains reactants in proportions corresponding to 3-6 per cent CO2, and 1 1/2 -3 parts total NH3 by weight per part CO2.  Ammonia may be added continuously or intermittently during the aeration, if desired, along with the air &c.
Patent GB-629067-A (GB)
Title: Improvements in film spools for photographic cameras
IPC: G03B17/30
Filed: 1947-10-27
Abstract: 629,067. Photographic film spools. CASCELLOID, Ltd., SENIOR, H., and WARD, W. T. Oct. 27, 1947, No. 28631. [Class 98 (i)] A photographic film spool having a cylindrical body and end flanges is characterized in that the body is solid and has two slots which pass through the body and are tapered in width from one side of the body to the other and also in height so as to grip the film end or backing paper. Preferably the slots have their medial planes parallel and point in opposite directions. The spool, which may have either a bearing recess at one end and a key slot at the other or the two ends each formed with a slot for a different winding key, may be formed with its side flanges integral with the body as by injection moulding of a thermoplastic polymer of vinyl or styrol groups, e.g. black polystyrene.
Patent GB-613095-A (GB)
Title: Improvements in or relating to stapling machines
IPC: B25C5/16
Filed: 1945-09-29
Abstract: 613,095. Hand stapling-machines. QUICK, T., and QUICK, S. Sept. 29, 1945, No. 28651/46. Divided out of 613,031. [Class 89 (iii)] The Specification describes the stapling-machine described in Specification 613,031 and claims the unitary assembly displaceable from the magazine 11, of the staple bar 13, pusher 17, rod 21 and spring 26. It describes also a modification in which the bar 13 is pivoted to the magazine by a screw 63 and the magazine has a central opening 62 to allow the bar to be loaded with staples at a mid-point. The abutment member 33 is omitted. In another modification, the block 20 is a loose fit on the rod 21 so that the pusher can be moved downwardly to engage a shoulder on the magazine to lock it in retracted position. In another modification, the pusher is separate from the block 20 and is held to it by a sleeve nut screwing on to the pin 18. Specification 613,100 also is referred to.
Patent GB-873774-A (GB)
Title: Titanium alloys
Inventor: MEAD HARRY WILFRID
IPC: C22C14/00
Filed: 1958-09-08
Abstract: Alpha and alpha-beta titanium alloys which can be heated in the beta-phase field without loss of ductility have the following percentage composition by weight: B 0.005-0.5; Mo up to 15 or Cu up to 2.5 or Zr up to 10 or V up to 20 or Al up to 10 or Mn up to 12 or Al up to 10 in combination with Mn up to 12; Ti and impurities, the remainder.  According to the Provisional Specification the alloy may also include Sn up to 11 and Si up to 0.25.
Patent GB-714033-A (GB)
Title: Improvements in or relating to machines for polishing optical surfaces
IPC: B24B13/02
Filed: 1952-11-14
Abstract: 714,033. Polishing optical surfaces. ANGENIEUX, P. Nov. 14, 1952 [Nov. 17, 1951], No. 28745/52. Class 60 A machine for polishing curved optical surfaces comprises a concave spherical element 1, and a convex spherical element 2, each of which is rotatably mounted about its axis of symmetry which passes through the centre of curvature 19 common to both elements, an arm 10 mounted to oscillate about a shaft 9 and to carry the element 2, means to oscillate the arm, and means utilizing such oscillatory motion for rotating the element 2. When convex surfaces are to be polished the element 1 forms the tool and the element 2 the work holder. With concave surfaces the functions of the elements are reversed. The arm 10 is oscillated about the axis of the shaft 9 by a crank disc 12 and a link 11 adjustably connected by a trunnion 21 to a bracket member 10 to enable the amplitude of oscillation to be varied. The shaft 9 is connected by toothed or friction wheels 16, 17 with the element 2 and may be held against rotation so that this element will receive an alternating rotary motion about its axis of symmetry in consequence of its oscillation about the axis of the shaft 9, or it may be rotated so that the element 2 will receive either an alternating or unidirectional variablespeed drive according to its angular velocity. A nut 20 enables the position of the element 2 to be adjusted in relation to the axis of oscillation. The polishing tool may be loaded by a weight 18 or by a spring. The machine may be inclined to the vertical.
Patent GB-935442-A (GB)
Title: Improvements relating to hockey sticks
Inventor: SAMS RONALD GEORGE
IPC: A63B59/12
Filed: 1961-08-11
Abstract: 935,442. Hockey sticks. SAMS BROS. Ltd. July 24, 1962 [Aug. 11, 1961], No. 29043/61. Class 132 (2). A hockey stick comprises a spliced junction 1 between the handle 3 and head 2, and is bound in the region of the junction with fibre glass tape 4. The tape may be self-adhesive, or may be fixed in place by a separate adhesive. The cross-section of the stick varies from being circular at the upper end of the handle, to being shaped as shown in Fig. 5 at its lower end, 5 being the striking face of the stick.
Patent GB-380633-A (GB)
Title: Improvements in or relating to skein or crank winding machine
IPC: B65H54/58
Filed: 1931-10-19
Abstract: 380,633. Skein &c. winding machines. BERNSTEIN, E., 13, Paul-Gerhardstrasse, Dresden, Germany. Oct. 19, 1931, No. 29046. [Class 120 (ii).] In a skein or hank-winding machine, thread or yarn is wound continuously in the same direction by a crank member over two winding members into a closed skein or hank until, after the desired thickness of skein has been wound, two new winding members come into the range of action of the crank member ; the wound skein is then bound or tied up, its connection with the succeeding skein is severed and it is drawn from the winding members by grippers. Thread 56 from a bobbin 58 passes to a crank arm 8 continuously rotated by a shaft 13 driven from a main shaft 23. The arm 8 carries a thread nozzle constrained to move in a substantially elliptical path by a link 11 and eccentric arm 10, the link 11 being adjustable to vary the eccentricity of the path to correspond to the distance between lower and upper winding members 5 the upper of which is adjustable towards or away from the lower one according to the length of the skein to be wound. The winding members are mounted concentrically about a shaft 4 driven by a shaft 16 intermittently rotated through a Maltese cross gear 27 mounted on it. Pins 32 on a disc 30, slidable on a shaft 29 geared to the shaft 13 engage the gear 27 when the disc is displaced therealong by a lever 35 pivoted to a control shaft 25, the control shaft being rocked by a spring actuated arm 33 when an extension 44 of the lever 35 is released by a retaining pawl 45. This pawl is resiliently connected to a second pawl 49 which is rocked by a pin 54 on a control disc 53, the speed of rotation of this disc thus determining the periods of rotation of the shaft 4 and hence the amount wound upon the winding members. The disc 53 is driven from the shaft 23 by change speed gearing. The disc 30 is released from engagement with the Maltese cross gear 27 by a cam 38 on the shaft 23 engaging an arm 36 secured to the shaft 25. The displaced wound skein is tied by a device 60, severed from the next skein by cutters 61 and removed from the machine by grippers 62 as the shaft 4 is successivelv rotated.
Patent GB-707429-A (GB)
Title: Fluid pressure regulator and valve structure thereof
IPC: G05D16/06
Filed: 1951-12-13
Abstract: 707,429. Valves. MEYER, F. Dec. 13, 1951, No. 29176/51. Class 135 A fluid pressure regulator includes supply and balancing chambers 24, 46, respectively, in communication via conduit 47, interconnected diaphragms, one 26 forming a wall of the supply chamber and the other 29 separating the balancing chamber and a delivery chamber 34, and a passage 62, 63 connecting the balancing and delivery chambers controlled by a valve 61 actuated by the diaphragm 29. Air enters the supply chamber via chamber 18, filter 13 and passage 25 and passes to the balancing chamber so that the valve 61 carried by the diaphragm 29 and abutting a stem 51 carried by the equal area diaphragm 26 is balanced with respect to supply pressure. When the delivery pressure in chamber 34 decreases, the spring 73 shifts the diaphragm 29 to move the valve 61 away from a seat on the end of a screwed stem 70 which adjusts the spring 73. The throat of a venturi in the outlet from the delivery chamber is connected to a passage containing a spring-loaded ball relief valve so that when the delivery decreases below a predetermined minimum, due to diminishing demand, any excess pressure is bled via the relief valve and chamber 32 to atmospheric outlets 33. Specification 658,902 is referred to.
Patent GB-189109-A (GB)
Title: Improvements in or relating to differential gearing
IPC: B60K17/08
Filed: 1922-07-17
Abstract: 189,109. Lavaud, D. S. de. Nov. 12,1921, [Convention date]. Differential gearing comprises a sleeve 59 internal to and driven by ratchet rings 23 and in turn driving two axle parts 24, 24<1> separately through ratehet clutches 58<1>, 58<11>. The rings 23 may be driven from a swash ring 10 of variable inclination as described in Specification 189,087.
Patent GB-868100-A (GB)
Title: Blading for axial flow turbines
IPC: F01D5/14
Filed: 1958-09-12
Abstract: 868,100. Turbine blades. BROWN, BOVERI & CIE A.G. Sept. 12, 1958 [Sept. 12, 1957], No. 29286/58. Drawings to Specification. Class 110(3). The blading of an axial flow turbine is characterized by the feature that over the blade length from the inner end to the outer end the fluid outlet angle of the guide blades decreases and that of the moving blades increases. With this blading, which is twisted in the opposite direction to that of blading designed in accordance with the free vortex theory, the degree of reaction decreases as a reference section through the stage moves radially outwards. Thus at both the radially inward tips of the guide blades and the radially outward tip of the rotor blades the heat drop is small and the tip losses thereby reduced.
Patent GB-674319-A (GB)
Title: Method for starting multicellular pressure electrolyzers
IPC: C25B15/00
Filed: 1950-11-30
Abstract: 674,319. Electrolytic production of gases. LONZA ELEKTRIZITATSWERKE UND CHEMISCHE FABRIKEN AKT.-GES. Nov. 30, 1950 [Sept. 8, 1950], No. 29367/50. Class 41. In the electrolytic production of gases, for example oxygen or chlorine, in multicellular pressure electrolysers with cells provided with diaphragms and interconnected by passages for gas and electrolyte, the gas spaces at the commencement of electrolysis are filled with an inert gas, for example nitrogen, at not less than atmospheric pressure and the current is switched on at such pressure. The inert gas may be introduced at the full working pressure and the current switched on directly at the full working intensity.
Patent GB-722974-A (GB)
Title: Improvements in or relating to selectors of the telecommunications type
IPC: H01H63/22
Filed: 1952-11-20
Abstract: 722,974. Electric selectors. SIEMENS & HALSKE AKT.-GES. Nov. 20, 1952 [Nov. 20, 1951; Nov. 20, 1951], No. 29393/52. Class 40 (4). In a rotary selector driven from a step-bystep motor through toothed-wheel gearing, the rotary part of the selector is stopped in a position corresponding to a predetermined contact by a pawl engaging with a ratchet-wheel, the over-drive forces being taken up by a coupling in the drive to the selector. A motor drives a selector shaft 11, Fig. 1, through pinion 1, gear 2, pin 5, spring 7, bent driving-pin 6, shaft 4, pinion 3 and gear 10. When the selector reaches the desired contact, test relay 12 energizes momentarily to cut off the motor and release pawl 15 which arrests gear 10, the angular momentum of the motor and associated gearing being arrested by spring 7. Energization of magnet 18 re-engages pawl 15 behind the turnedover end 14 of armature 13. Modification. The motor 21, Fig. 2, drives a gear 29 through gears 24, 26, 27, pins 30, 32 and spring 34. Momentary operation of test relay 49 releases spring pawl 46 to engage and stop gear 29 while contacts 45 change over to de-energise the motor. The over-run of gear 27 causes pin 36 to rock wiper 39 clockwise into engagement with the selected contact 43 and leaf-spring 41 into engagement with slip-ring 42 serving as a current lead-in to the wiper. The wiper-carrier 37 closes contacts 40. Temporary energization of magnet 50 restores the apparatus. Second modification. Motor 55 drives gear 58 through gear 56, pins 59, 61 and spring 64. Operation of test relay 76 allows pawl 74 to arrest gear 58 while pawl 77 half-engages gear 56 and is carried along until the end of spring 78 drops off dog 79 when pawl 77 halts gear 56. In its motion, pawl 77 rocks lever 81 clockwise against spring pressure to close contacts 88, so de-energizing the motor. The additional angular movement a of gear 56 with respect to gear 58 rocks wiper carrier 65 clockwise to cause the wiper to engage the selected contact. Operation of magnet 87 restores the apparatus.
Patent GB-974516-A (GB)
Title: Improvements in and relating to apparatus for detecting the presence of magnetic objects
Inventor: TURNER BASIL AMORY
IPC: B61L1/16
Filed: 1961-08-15
Abstract: 974,516. Locating magnetic bodies. COSMOCORD Ltd. Aug. 15, 1962 [Aug. 15, 1961], No. 29397/61. Heading G1N. A head for detecting the presence of an object of magnetic material, comprises a magnetic structure which includes two magnetic loops 16, 10, and 17, 11, Fig.1 each including a source of magnetic flux and an air gap, and a third magnetic loop including both the said sources 10, 11, and a semi-conductor element 14 in a gap between polepieces 12, 13, the arrangement being such that a change of reluctance in one of the gaps in one of the said two loops causes a change in the flux passing through the element 14. The element may be magneto-resistive or be a Hall plate, and screening may be provided on all faces except that adjacent the two gaps. A bridge circuit for a magneto-resistive element is described with reference to Fig. 2 (not shown).
Patent GB-504627-A (GB)
Title: Improvements in and relating to kettles for melting and mixing chocolate and like purposes
IPC: B01F7/00
Filed: 1937-10-27
Abstract: 504,627. Mixing chocolate &c. CLAYTON, E., and TERRY & SONS, Ltd., J. Oct. 27, 1937, No. 29407. [Class 86] In apparatus for melting and mixing chocolate of the kind comprising a jacketed vessel having a central shaft with a radially-arranged frame fitted with a stirrer, the stirrer is in the form of an inclined vane or disc 19 carried on a shaft 18 mounted in the radial frame 14 and rotated by the engagement of a gear 20 with a stationary gear 21. Superposed shafts 18 with vanes may be fitted, one of the shafts being at right-angles to the other.
Patent GB-481453-A (GB)
Title: Improvements in the construction of electrically propelled vehicles
IPC: B61F3/04
Filed: 1936-10-29
Abstract: 481,453. Railway - vehicle underframes. ENGLISH ELECTRIC CO., Ltd., and SMITH, S. A. Oct. 29, 1936, No. 29447. [Class 103 (vi)] The underframe of an electrically propelled railway vehicle is strengthened by means of a number of downwardly projecting posts 4, which, with other members 5 tying them together, from the frame structure of a box or boxes for the electrical control gear. As shown, the posts 4 on each side of the vehicle are arranged in two longitudinal rows depending respectively from a sole-bar 3a and from a floor longitudinal 3, and are tied by longitudinal truss rods 4 having inclined ends 5a united to the main portion of the underframe. The box framework may be completed by transverse members 6 between the rows of posts 4 and by supports 8 carrying the gear 7, while bottom, side and end plates may be fitted to form an enclosed structure.
Patent GB-1465967-A (GB)
Title: Oil filled capacitor
IPC: H01G4/22
Filed: 1974-07-03
Abstract: 1465967 Dielectric fluids NISSIN ELECTRIC CO Ltd 3 July 1974 [19 July 1973 8 May 1974] 29505/74 Heading C5F [Also in Division H1] An insulating liquid composition for impregnating a capacitor wherein the dielectric includes plastics film comprises one or more orthophosphoric esters having three or four benzene rings per molecule and 10 to 60% by volume of one or more aromatic hydrocarbons. Esters specified are trixylenyl phosphate, tricresyl phosphate, cresyldiphenyl phosphate and diphenylorthoxenyl phosphate. The hydrocarbon may be alkylnaphthalene, a diarylalkene or alkylbenzene. The capacitor may be wound from aluminium foil strips and polypropylene strips and optionally paper. Among the stated advantages are that the liquid is ecologically acceptable and substantially non- combustible.
Patent GB-536144-A (GB)
Title: An electromagnetic switch actuated by electric impulses
IPC: H01H29/20
Filed: 1939-11-09
Abstract: 536,144. Electromagnet switches. DAWSON, W. J., and METROPOLITAN ELECTRIC SUPPLY CO., Ltd Nov. 9, 1939, No. 29722. [Class 38 (v)] Current impulses applied to an electromagnet 11 from a remote control device operated by deliberate variation of supply voltage for a determined time cause its armature 13 to reciprocate and actuate, by means of a pawl lever 15 and ratchet wheel 16, a cam 22 controlling a mercury switch 26 which may control lighting circuits. The pawl lever has a tooth 19 engaging pins on the wheel 16 and a second tooth 19a which prevents too much rotation. A spring 21 also prevents reverse rotation. In the form shown the cam has four positions and causes the mercury switch to assume three different position, viz., an "'off position, the position shown in which mercury connects contacts 27, 30, and a position in which mercury connects 27 not only to 30 but also to 31. The remote control device may be a relay 32 constructed as in Specification 536,761, and comprises a solenoid 32, an armature 35 fixed to a hollow element 34 having a restricted orifice through which mercury can enter to complete a circuit when the element 34 is pulled down into a bath of mercury.