baber/WOPTO huggingface dataset:
Patent GB-518485-A (GB)
Title: Improvements in or relating to display appliances or fittings
IPC: A47F3/12
Filed: 1938-08-27
Abstract: 518,485. Brackets. SILVER, A. M. Aug. 27, 1938, No. 22301. [Class 52 (v)] A display fitting comprises a block 6 adapted to be detachably secured in a jaw or socket 3 of a bracket or like holder 1, the block 6 being provided with one or more lateral extensions 7 having apertures 7a to receive the ends of display rods or bars 8 and the bracket being adapted to be secured to the edge of a plate x or the like. In a modification the bracket and the block may be integral as shown in Fig. 10. The extensions 7 may be secured to the block 6 by means of bars 11, Fig. 14, which may be stepped, curved or straight. Fig. 17 shows the bracket 1 fitted with supports 14 for a shelf 15.
Patent GB-846627-A (GB)
Title: Navigation aiding radio systems
IPC: G01S1/02
Filed: 1958-07-11
Abstract: 846,627. Radio navigation. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. July 11, 1958 [July 16, 1957], No. 22374/58. Drawings to Specification. Class 40(7). In a blind landing navigation system the pilot of the aircraft is presented with a television picture of a model of the airport which corresponds to the view of the airport that the pilot would obtain in good visibility. A television camera situated at the ground is moved above the model of the airport in accordance with the movements of the aircraft by means of servo-mechanisms which are controlled by signals derived at least in part from ground based radar equipment. Video signals are transmitted to the aircraft receiver in known manner. A second model airport may have a model aircraft moved above it, in like manner to the camera, so that the position of the plane relative to the airport may be observed readily. The invention may be extended for use with several aircraft.
Patent GB-715699-A (GB)
Title: Compositions for lubrication
Filed: 1951-09-25
Abstract: A lubricating composition, especially suitable for engine lubrication, comprises a major proportion of a blend of polyalkylene glycol polymeric material of lubricating oil viscosity with hydrocarbon lubricating oil, in which blend the proportions of the hydrocarbon oil and the polymeric material are in the ratio 0.25-4 : 1 by volume, and a minor proportion of an alkylated monohydric phenol having at least 5 aliphatic carbon atoms in the molecule the phenol being liquid at a temperature not higher than 15 DEG F. above the miscibility temperature of the blend. The hydrocarbon oil may be mineral lubricating oil or a synthetic lubricating oil obtained by the polymerization of olefins or by the Fischer-Tropsch process, or a mixture of such oils.  The polyalkylene glycol polymeric material may be a polyoxyalkylene diol or a derivative thereof in which one or both of the terminal hydroxyl groups are etherified or esterified, or one is etherified and the other esterified.  In the examples, lubricating compositions are described which consist of a blend of mineral lubricating oil and a polyalkylene glycol polymer material prepared from 1, 2-propylene oxide and 2-ethylhexonol, together with one of the following phenols:-p-iso-amylphenol, octyl phenol (prepared by the alkylation of phenol with 1-octene), o, p-d sec.-butyl phenol, p-nonyl, phenol dodecyl phenol (prepared by the alkylation of phenol with 1-dodecene), hexadecyl phenol (prepared by the alkylation of phenol with 1-hexadecene and C20-, C22- and C23-alkyl phenols prepared by the alkylation of phenol with polypropene).  In further examples, lubricating compositions are described which consist of the hexadecyl phenol mentioned above, together with a blend of mineral lubricating oil and one of the following polyalkylene glycol polymer materials:- a polymeric material prepared from methanol and 1, 2-propylene oxide and subsequently esterified with acetic acid, an octanol-initiated copolymer of ethylene oxide and 1, 2- propylene oxide which copolymer has been subsequently esterified with acetic anhydride, a water-initiated polypropene oxide polymer and a 2-butanol-initiated copolymer of ethylene oxide and isobutylene oxide which copolymer has been subsequently esterified with acetic anhydride.  Specifications 601,419, 640,945, [Group IV (a)], and 642,037 are referred to.
Patent GB-831710-A (GB)
Title: Improvements in or relating to electric motor control arrangements
Inventor: SONDERMEYER RICHARD
IPC: G05D3/12
Filed: 1958-07-14
Abstract: 831,710. Electric correspondence control systems. FERNSEH G.m.b.H. July 14, 1958, No. 22484/58. Class 40 (1). [Also in Group XXXV] In an automatically balanced A.C. resistance bridge, the out-of-balance current is fed to the servomotor through a limiting circuit which operates an eddy current brake, and causes the power supply to the motor to be periodically interrupted when the signal falls to a predetermined value. As shown (Fig. 1), operation of selected switches 2a<1>- 2l<1> determines the ratio of the arms in branch 2 of a bridge fed with A.C. at 3, 4, any voltage difference across diagonal 5, 6 passing through amplifier 7 and selector circuit 8 which energizes relay 40 or 41 in accordance with the phase-sense of the unbalance signal to determine the direction of rotation of motor 11, which adjusts the slides of potentiometer 1, forming the other branch of the bridge, until balance is regained. The error signal is also fed to a threshold stage 12 which, when the signal falls below a predetermined value, energizes an eddy-current brake 13, and also reduces the speed of motor 11 by introducing a resistor 14 into the motor energizing circuit. To further reduce hunting the selector circuit 8 intermittently interrupts the supply to motor 11 when the error signal is low, by mixing the error voltage at terminals 5, 6 with a double frequency voltage from transformer 24 (Fig. 3), the combined signal being fed to valve 32, producing across the anode load resistor 34 a signal in phase or out of phase with the supply voltage when the error voltage at 5, 6 is large, but producing signals in each half-cycle when the error voltage is small. The voltage across resistor 34 is fed to a double valve 39 with A.C. in antiphase on the anodes, fed through the windings of relays 40, 41. Hence with large signals either relay 40 or 41 is energized, but with small signals both relays are energized, causing interruption of the supply to motor 11, and reducing the possibility of hunting about balance position. The apparatus may be used to position a selected lantern slide mounted on a rotary member in the optical path of a projector.
Patent GB-196882-A (GB)
Title: Improvements in the driving of the auxiliary pumps of steam-power installations
IPC: F04D13/04
Filed: 1922-08-18
Abstract: 196,882. Akt.-Ges. Brown, Boveri, et Cie. April 26, 1922, [Convention date]. Addition to 132,227. Drawings to Specification. Driving-gear.-In the arrangement for driving a group of auxiliary pumps of steam-power installations as described in the parent Specification, the gearing is of the. single-helical toothed type.
Patent GB-900502-A (GB)
Title: Improvements in and relating to electrical connections in plant for the melting and casting of metals
IPC: H01R39/64
Filed: 1960-06-28
Abstract: 900,502. Supplying current to rotating conductors. BALZERS A.G. FœR HOCHVAKUUMTECHNIK UND DœNNE SCHICHTEN. June 28, 1960 [June 29, 1959], No. 22662/60. Addition to 831,887. Class 38 (1). A rotary connection for supplying current from stationary bars 18, 19 to rotating, concentric conductors 4, 5 leading to a highfrequency evacuated induction furnace according to the parent Specification, comprises a pair of stationary ball or roller races 10, 11 connected to the bars 18, 19 by flexible conductors 20, 21 and adapted to be urged together by springs 16 so as to press balls 12, 13 or rollers of good conducting material into engagement with co-operating races formed on rotating conducting members 7, 8 attached to the conductors 4, 5. The members 7, 8 are separated by an insulating disc 9.
Patent GB-197247-A (GB)
Title: Improvements in or relating to tennis racquets and the like
IPC: A63B49/08
Filed: 1922-08-21
Abstract: 197,247. Icke, S. C., and Daniel, C. A. Aug. 21, 1922. Rackets.-A tennis racket or the like is con. structed of a metal frame formed with ribs 6, the ends of the frame being accommodated within a metal tube 4 formed with channels 5. The tube is reinforced by a collar 7, which accommodates the ends of the wooden parts 12 of the handle. The wedge-piece 8 is adjusted by a screwed shank which passes through a plate 11, the ends of which engage with slots in the handle. The metal parts of the racket may be made of duralumin or aluminium.
Patent GB-333042-A (GB)
Title: Improvements in magnetic separators
IPC: B03C1/14
Filed: 1929-07-24
Abstract: 333,042. Jones, O. C. July 24, 1929. Magnetic separators.-A compound magnet a formed of a number of electromagnets of horseshoe shape arranged so as to leave a slot b is secured inside, and to, a drum c adapted to be rotated on a spindle by a belt c<1> passing over a drum d, provided with a turning handle d<1>. The belt c<1> is attached to the drum c at j<1>. On the frame carrying the drum c are provided two stops e e<1> between which an arm f attached to the drum c or its spindle, moves, allowing the drum c to be moved by the operation of the handle d<1> through half a revolution. The arm f is provided with an extension h which, when the drum is rotated, engages the handle of a switch g controlling the supply of current to the electromagnets and then de-energises them. The magnetic particles will then be discharged into a receptacle v. When the drum c is rotated again the extension h will operate the switch g again, and energise the magnets, and come to rest when the arm f engages the stop e. A shield i attached to the belt c<1> and drum c diverts the material into a receptacle v<2> during the period, when the drum c is being rocked. In a modification two drums are operated so that one is in operation when the magnets of the other are de-energised and vice-versa.
Patent GB-694577-A (GB)
Title: Alternating current phase-sensitive control circuit
IPC: G05D1/00
Filed: 1950-09-15
Abstract: 694,577. Automatic control systems for aircraft. BENDIX AVIATION CORPORATION. Sept. 15, 1950 [Sept. 23, 1949], No. 22760/50. Class 38 (iv). [Also in Group XXXVI] To eliminate a spurious component of an error signal in an electrical servo-control system, such as an automatic aircraft control, the spurious component being 90 degrees out of phase with the main error signal, the error signal from sources 16, 17, 18 is fed to a selective wave detector 12 by a transformer 10, the detector 12 comprising a source of A.C. voltage in phase with the main error signal so that the A.C. voltage coacts with the main error signal to produce a variable rectified voltage at the output of the detector 12, and the out-of-phase voltage is eliminated. The detector 12 also comprises transformer 26, resistor 30, and diodes 34, 36 so connected that current can only flow in a clockwise direction. A tapping 28 on resistor 30 is positioned so that in the absence of any error signal there is no voltage between tapping 28 and the centre point 22 of the secondary of transformer 26. The secondary of transformer 10 is connected to the centre point 22 so that in the presence of error signals, on each alternate half-cycle one each of the secondary of transformer 26 is at a voltage corresponding to the additive effect of the A.C. voltage source and the error signal and the other end at a voltage corresponding to the difference. Owing to the symmetry of the circuit the spurious 90 degrees out-of-phase component is balanced out over a period of time and a series of D.C. voltage pulses are applied to a smoothing circuit 32 and a D.C. voltage representative of the true error signal is developed across load resistors 50, 51. This voltage is fed to a modulator 14 comprising two triode valves 152, 153, the grids of which are fed from an A.C. source through a transformer 66, the arrangement being such that in the absence of the error voltage both valves draw equal amounts of current and there is no resulting voltage across the primary of an output transformer 8. The error voltage, however, is also applied to the grids of the valves so as to upset the balance and cause unequal periods of conductivity, and an A.C. output voltage proportional to the unbalance is developed across the transformer 58. The output of the modulator is limited by the action of cathode resistor 154.
Patent GB-420324-A (GB)
Title: Improvements in or relating to the production of articles of rubber or the like
IPC: B29C37/00
Filed: 1933-08-15
Abstract: In the production of rubber and like articles with patterned surfaces by dipping, spreading, spraying or moulding from solutions with the aid of a patterned core of porcelain or like material, which is formed initially by moulding it in a master mould provided with a patterned interior, the necessity for engraving or cutting a separate master mould for each surface pattern on articles that are otherwise identical, is obviated by providing separate patterned sheets adapted to be selected and fixed at will in a common master mould.  For example the master mould may be made of wood and have any one of a number of patterned vulcanized rubber sheets secured thereto by rubber solution, latex adhesives or the like.  The insert may also be made of metal, leather, linoleum or the like.  The rubber sheet may be patterned by vulcanizing it in contact with an engraved metal plate or by coating embossed paper or the like with rubber by dipping, spreading, spraying, or other methods.  The invention is stated to be adapted for the manufacture of beach shoes, bathing-caps, tobacco-pouches, hand-bags, and various garments.
Patent GB-151465-A (GB)
Title: Improvements in and relating to electromagnetic switches
IPC: H01H50/24
Filed: 1919-09-17
Abstract: 151,465. British Thomson-Houston Co., (General Electric Co.). Sept. 17, 1919. Electro-magnetic switches for alternating currents. In order to minimize chattering while the switch is held closed, the armature 11, Fig. 1, is loosely mounted on the pivoted switch arm 5 by means of a pin 15 attached to the arm and passing through a slightly larger hole formed in the armature, the hole being reduced at the middle point of its length. A second pin 14 passing through a hole which is larger than the pin throughout its length completes the attachment. The armature is laminated, as shown in Fig. 3, and the switch arm is pivoted at 6 and carries a resiliently mounted contact member 9 co-operating with a stationary contact S.
Patent GB-188429-A (GB)
Title: Improvements in dental engines
IPC: A61C1/02
Filed: 1921-08-29
Abstract: 188,429. Heck, G. D. Aug. 29, 1921. Dental engines.-A dental engine, of the kind in which a swing- able tool-carrying arm is held in horizontal position when in use and may be released and dropped into vertical position when not in use, is provided with a spring-actuated detent which serves to hold the arm in the horizontal position, and is extended along the arm in order that it may be released and the arm dropped by one hand of the operator. In the form shown in Figs. 1 and 2, a supporting head 1 pivotally mounted at the top of a hollow standard 4 is formed with a bearing lug 2 which is embraced by and pivotallv connected to ears 10, 11 depending from a collar 9 on the toolcarrying arm 5. The arm is held in horizontal position by a detent 22 engaging a notch 23 in the lug 2 and formed with a portion 20 extending through a slot 17 in a wall 13 connecting the ears 10, 11. The detent is held in engagement with the notch by a spring 24, but may be released by pressure on the part 20 bv the thumb of the operator when the arm 5 is grasped to lower it into the vertical position. The head 28 of a screw which secures a plate 26 in position to hold the detent in place co-operates with a shoulder 29 on the lug 2 to limit upward movement of the arm 5. The pivot pin securing the ears 10, 11 to the lug 2 is formed in two parts screwed together, as shown in Fig. 3, and extended at 30, 31 to form supports for the driving belt 6 when the arm 5 is lowered to the vertical position when out of use. Fig. 5 shows a modification in which a detent 36 is mounted to rock on a pin 37 between ears 38 depending from a collar 39, and is controlled by a spring 45 mounted in a recess in the collar.
Patent GB-601200-A (GB)
Title: Improvements in or relating to incandescent cathode for use in gas or vapour filled discharged tubes
IPC: H01J61/067
Filed: 1946-08-01
Abstract: 601,200. Thermionic valves. PHILIPS LAMPS, Ltd. Aug. 1, 1946, No. 22917. Convention date, March 27, 1940. [Class 39 (i)] An incandescent cathode for gas- or vapour-filled discharge tubes comprises a number of identical wire elements connected in parallel and interconnected at intermediate equipotential points so as to form an openwork structure having apertures not less than 5 mms. wide, through which the discharge can penetrate into the interior of the structure. The connections may be made with sintered iron or nickel or similar metal, or by binding with thin refractory wire. The individual filaments may be worked into a braided body, preferably symmetrical. In one form, zig-zag filaments 1, Fig. 1b, are formed into a hollow star-shaped prism and alternate bends 2, 3 are connected to corresponding bends of adjacent filaments. The end connections 4 are ring-shaped. For smaller currents, zig-zag filaments 1, Fig. 3b, are arranged in star fashion in radial planes about a common axis and inner bends are all connected at points 6. Zig-zag filaments may be replaced by filaments formed by compressing a helix in a direction perpendicular to its axis, so that the successive loops of approximately trochoid form lie in a single plane. The filaments may be tungsten wire wound with nickel wire and a further coating of nickel may provide the base for an emissive coating. Dimensions and working currents of an example are given. The filling may be mercury at a pressure exceeding 1 mm. The subject-matter is identical with that of Specification 549,992. Specification 427,609 and U.S.A. Specification, 1,890,339 also are referred to.
Patent GB-588266-A (GB)
Title: An improved method of and means for the corner mounting of cards and the like
IPC: B42F5/06
Filed: 1944-11-18
Abstract: 588,266. Corner mounts for cards &c. TACON BROS., Ltd., and KERSHAW, J. Nov. 18, 1944, No. 22960. [Classes 11 and 146 (i)] [Also in Group XVIII] For mounting record cards, e.g., P.A.Y.E. cards in registers, or card-like or carded goods in albums, the base sheet a' is formed with pairs of slits d, the slits of each pair joining to form a corner, and a straight strip of material f is engaged with the slits to form a corner mount, the ends of the strip being secured to the back of the base sheet. In one form, two sheets a<1> a<2> are secured at one edge to a binding- strip C for insertion in a loose leaf binder and a pair of cards b', b<2> are mounted on each sheet. The slits of each pair of slits d meet and the central pairs -are combined to form T-shaped slits e. Each strip f which may be of buckram, stiff paper, manilla, or cellulose tissue is threaded through the slits to form a corner pocket on the front face of the base sheet a' or a<2> and, as shown, the ends f', f<2> are bent inwardly from the sheet edges and secured to the back of the base-sheet. One or both ends, however, may be secured without bending inwardly. In a modification, the adjacent pockets on the two sheets a', a<2> or the pockets at two diagonally-opposite corners may be formed from a single strip f.
Patent GB-222861-A (GB)
Title: Improvements in or relating to rotors for asynchronous motors
IPC: H02K17/18
Filed: 1924-09-29
Abstract: 222,861. Siemens - Schuckertwerke Ges. Oct. 1, 1923, [Convention date]. Alternating - current induction machines; conductors. - To reduce the rotor dispersion flux and increase the power factor of an induction motor of the type having a high-resistance starting winding b, Fig. 2, and a lowresistance running winding c, the bars of the running winding are provided with portions extending towards the circumference and wholly or partly filling the slits d between the inner and outer slots. In a modification, Fig. 4, the slits extend to the circumference of the rotor.
Patent GB-685631-A (GB)
Title: Improvements in or relating to the spinning of viscose
IPC: D01F2/08
Filed: 1949-09-07
Abstract: Viscose, having a g -value above 60 and a viscosity of at least 400 poises, is extruded into a coagulating bath of acid concentration 10-15 grams per litre at 15-30 DEG  C., and the filamentary product which is obtained is thereafter fixed by treatment with a hot aqueous liquid.  The g -value is the number of CSS groups per 100 C6H10O5 units in the cellulose xanthate.  The viscose used may be obtained from an unripened alkali cellulose and it may have a cellulose content of 6-10 per cent by weight.  Alternatively, viscose of a cellulose content of 10-15 per cent by weight and made from ripened alkali cellulose may be used.  The high g -value may be achieved by xanthogenation with a large excess of carbon disulphide, i.e. at least 50 per cent by weight of the a -cellulose content.  The viscose may have a viscosity of 600 poises or more and a g -value of 70-80. The spinning nozzle is preferably immersed in the coagulating bath and the extruded filaments may pass through a straight tube immersed in the bath.  The spinning speed may be 50-100 metres per minute. The coagulated but still plastic filaments may be stretched by 100-200 per cent.  Fixing may be effected by hot dilute acids or saline solutions or hot water. The fixing may be effected while the filaments are under or free from tension or after the filaments have been cut to form staple fibre.  In an example, sheets of cellulose pulp having a degree of polymerization greater than 800 are steeped in caustic soda lye and pressed.  The alkali cellulose is shredded but not ripened and then xanthated.  The cellulose xanthate is dissolved in dilute caustic soda at 0-5 DEG  C. to form a viscose containing 9.5 per cent of cellulose and 5 per cent of caustic soda. The viscose has a viscosity of 900 poises and a salt point of 15-16. Its g -value is 70.  The solution is spun into sulphuric acid solution of a strength of 10 grams per litre.  The coagulated filaments are stretched and set in dilute sulphuric acid solution at 75-80 DEG  C. The process may be applied to the production of rayon, staple fibre, artificial hair, braid, and like filamentary products. Filaments having a tenacity higher than 5 grams per denier when dry and of about 4 grams per denier when wet, with elongation higher than y per cent, may be obtained.  Specification 655,516 and French Specification 890,575 are referred to.