baber/WOPTO huggingface dataset:
Patent GB-987405-A (GB)
Title: Improvements in or relating to electric circuits with groups of relays actuated by current impulses
Inventor: SCHLATTER ERWIN
IPC: H01H47/00
Filed: 1961-05-10
Abstract: 987,405. Relay circuits. EL-RE-MA S.A. PER LO SPRUTTAMENTO DI BREVETTI. May 10, 1961, No. 17018/61. Headings H3P and H3T. A pulse operated relay is held, between pulses, by a holding circuit including a static switch device which interrupts the holding current when the pulses are present.Two relays of a group of relays have respective operating windings A, B and respective holding windings MA, MB, the latter windings, being connected in a circuit containing a contact SMA, SMB and a D.C. supply Ba. The operating windings are connected to pulse sources IgI, IgIII so that if a contact a or b is closed the next pulse will operate the relay and it will be held operated by the holding circuit. The succeeding pulses will each produce a sufficient voltage across R2 to block rectifier Dv and so reduce the holding current-momentarily to zero. The relay is released by interrupting the control winding pulses and opening contact SMA or SMB. The arrangement is such that the contacts may be opened or closed at times when they are not connected to a source of current. The holding winding may be connected in the output circuit of a transistor the current through which is controlled by the voltage across resistor R1 or R2 or across a diode replacing the resistor (Fig. 4, not shown). When the voltage in the holding circuit is large, series connected transistors may be used (Fig. 5, not shown).
Patent GB-328836-A (GB)
Title: Improvements relating to fire extinguishing sprinkler installations
IPC: A62C35/60
Filed: 1929-06-04
Abstract: 328,836. Roberts, A., and Mather & Platt, Ltd. June 4, 1929. Starting p r i m e movers.-The starting motor a for ar internal - combustior engine is perman ently coupled thereto and is provided with a shunt winding m in .addition to the usual series winding k. By this arrangement the shunt winding assists the motor to develop a maximum torque for starting the engine, whilst as the latter comes up to its normal speed, the shunt winding generates a back electro-motive force sufficient to balance the applied electro-motive force of the starting battery b. The latter is kept charged by an auxiliary-engine-driven dynamo so arranged that it is started up by connecting it to the main battery, the dynamo acting as a motor until the engine is started, and thereafter acting as a charging dynamo.
Patent GB-1341594-A (GB)
Title: Process for the production of impact-resistant two-segment  copolymers that are transparent or have good light transmittance
IPC: C08F212/04
Filed: 1971-05-26
Abstract: 1341594 Transparent block copolymers CHEMISCHE WERKE HULS AG 26 May 1971 [29 May 1970] 17160/71 Heading C3P Two-block copolymers having good transparency and impact-resistance are obtained by a one-step polymerization of a mixture of an alkenylaromatic hydrocarbon and a conjugated diene, the monomers being present in a ratio between 78 : 22 and 90 : 10 by weight. The polymerization is carried out in a hydrocarbon solvent in the absence of polar impurities using as catalyst 0À1 to 0À8 millimoles of an organomonolithium initiator per mole of monomers. The ratio of the monomers incorporated in the polymer is 80 : 20 to 88 : 12 by weight. The solvent should contain not more than 10 ppm of water, and traces of polar impurities are preferably removed by addition of a small amount of n-butyl lithium, the excess being removed by back-titration with methanol after addition of a little styrene to act as an indicator. Copolymerization of styrene and butadiene catalysed by n-butyl lithium is described.
Patent GB-1064473-A (GB)
Title: Improvements in and relating to compositions suitable for anti-freeze applications
Inventor: STUBBS HUBERT WILLIAM DYSON
IPC: C09K5/20
Filed: 1963-05-01
Abstract: A composition comprises a mixture of isobutanol and ethylene glycol in which the ratio of isobutanol to ethylene glycol by volume is not more than 1:1.  A corrosion inhibitor such as (1) sodium borate, (2) sodium benzoate, sodium nitrite and sodium borate, or (3) sodium benzoate and sodium nitrite may be added.
Patent GB-297867-A (GB)
Title: Improvements relating to the attachment of metal veneers and articles of manufacturecomprising such veneers
IPC: E04C2/292
Filed: 1927-06-29
Abstract: 297,867. Mead, A. A., and Mead, McLean & Co., Ltd. June 29, 1927. Compound slabs.- Thin metal veneers are attached to relatively thick slabs, tiles, or the like, which may be employed for heat or sound insulating, by means of an intermediate layer of material impregnated with glue or cement, against which the metal is closely pressed. The veneers may be thin iron sheets which may be enamelled on one or both sides, the base material may be asbestos, and the intermediate layer may be absorbent paper or tissue, When only one side of the metal is enamelled, the product resembles an enamelled tile. The edges of the insulating material may be formed with grooves or other interlocking devices.
Patent GB-873395-A (GB)
Title: Wooden construction or structure
IPC: E04C2/40
Filed: 1959-05-21
Abstract: 873,395. Fencing. PEDERSEN, E. H. May 21, 1959 [May 22, 1958], No. 17374/59. Class 45. A woven wooden fence in which the warp comprises boards 1 which vary in width from a constant minimum to a constant or varying maximum. The boards are symmetrical about their longitudinal axes and are interlaced by narrow boards 2. The ends of the boards are interlaced with a wire 3 running in a groove.
Patent GB-827409-A (GB)
Title: Production of polypropylene filaments
Inventor: ROBERTS JOHN FRANCIS LLOYD
IPC: D01F6/04
Filed: 1957-06-03
Abstract: Polypropylene of which a major proportion is isotactic is melted, preferably while being compressed, and the molten polymer is extruded into filaments which are solidified in a controlled temperature zone at least 25 DEG  C. below their melting point and wound up at a speed sufficient to impart to them a birefringence of at least 20 X 10-3 and at most 50 X 10-3.  The filaments may be subjected to a separate drawing step at a draw ratio of less than 3 : 1 to impart a birefringence of at least 30 X 10-3 and at most 50 X 10-3, the separate drawing step being carried out at speeds of the order of 100 metres per minute.  Preferably, however, filaments having a birefringence of at least 30 X 10-3 and at most 50 X 10-3 are made by cooling the filaments in a controlled temperature zone between 20 DEG and at least 30 DEG  C. below the melting point of the polypropylene and winding the filaments at a speed of at least 900 metres per minute.  The controlled temperature zone may comprise a fluid, e.g. water or air, heated to the specified temperature.  The distance between the wind-up device and the solidification zone is dependent on the nature of the cooling fluid and the rate of wind-up and may be, e.g., at least 125 cms. for at least 900 metres per minute when the fluid is air and at least 25 cms. for at least 500 metres per minute when the fluid is water. Specification 818,100 is referred to.
Patent GB-134288-A (GB)
Title: Improvements in or relating to Ploughs, Cultivators or the like, or Tractors therefor.
Inventor: SMILES JOHN EDWARD
IPC: A01B3/50
Filed: 1918-10-28
Abstract: 134,288. Smiles, J. E. Oct. 28, 1918. Cultivators; ploughs; motor implements; adjusting parts of implements; frames and handles. - A single-track motor-driven implement or tractor comprises a wheel, or tandem wheels, a frame suspended below the wheel axis or axes, an internal-combustion engine on the front of the frame, guiding-handles at the rear, and means for attachment or connexion of a plough, cultivator, &c. In the form shown in Fig. 1. the broad wheel 2 is mounted in bearings 4 on the rectangular frame 1, and is provided with blades 2<a>, or gripping- bars or spikes, so that it may itself act as a cultivator. It is driven from the engine 5 through a worm and friction-clutch gear-box and chain gearing 5<c>, 6. The controls for the clutch and carburettor are mounted on the guiding-handles 8. The engine 5, fuel tank 5<a>, and carburettor 5<b> are mounted in front of the wheel, and the radiator 7 behind it, for balancing purposes. The cultivating-tools may be mounted on adjustable or folding bars. Removable or adjustable side rollers, wheels, or skids 9 may be provided to prevent overturning. Arrangements may be made for the attendant to ride on the machine.
Patent GB-545821-A (GB)
Title: Improvements in the preservation of wrapped food by freezing and the products so produced
IPC: A23L3/36
Filed: 1940-12-13
Abstract: 545,821. Non-fibrous wrapping materials ; preserving food. SYLVANIA INDUSTRIAL CORPORATION. Dec. 13, 1940, No. 17662. Convention date, Dec. 29, 1939. Drawings to Specification. [Class 2 (ii)] [Also in Groups VI and XVII] In a process for preserving food by freezing, the food is encased in a flexible wrapper formed of a non-fibrous hydrophilic colloid containing a softener comprising glycerol and diethylene glycol. The softener maintains the wrapper flexible at sub-atmospheric temperatures, and it does not crystallize at the low temperatures employed in the frozen food industry. The proportion of glycerol to diethylene glycol may be varied over a wide range. The softener may be applied to the wrapper as a solution in water or other diluent. The wrapping material may be in the form of a film-sheet, tube, bag, seamless casing, or carton-lining. It may be treated with the softener by dipping or spraying. The hydrophilic colloid may be gelatin, casein, cellulose hydrate, an alkali-soluble cellulose ether, a hydrophilic cellulose ester, or a waterswelling resin, e.g. a polyacrylic acid or ester resin, low-viscosity urea-formaldehyde resin, or alkyd resin. The film-like material may be provided with a moisture- or water-proof coating on one or both sides. The freezing may be effected by brine freezing processes or air blasting methods. Foodstuffs which may be treated include fruits, berries, vegetables, meat, fowls, and fish.
Patent GB-944985-A (GB)
Title: Improvements in thermostatically controlled gas valves
Inventor: SHERLOCK JOHN EDWARD
IPC: G05D23/12
Filed: 1960-05-19
Abstract: 944,985. Valves. BRITISH THERMOSTAT CO. Ltd. May 15, 1961 [May 19, 1960], No. 17707/60. Heading F2V. A thermostatic gas valve comprises concentric knobs 1, 2 for independently adjusting manual valve 8 via sleeve 3, pin 5 and slot 6 in lever 7, and thermal valve seat member 19 via pin 13 and screw 12, the knobs being separated by a ring 11 fixed to the casing 14. Specifications 773,593 and 834,943 are referred to.
Patent GB-182470-A (GB)
Title: Improvements in and relating to power driven vehicles
IPC: B62D61/02
Filed: 1922-06-27
Abstract: 182,470. Atlantic Akt.-Ges. f³r Automobilbau, (Assignees of Henkel, H.). June 29, 1921, [Convention date]. Driving auxiliary parts. - In twowheeled motor-vehicles provided with auxiliary lateral supporting wheels, the latter are raised and lowered by powerdriven means forming part of the change-speed gearing of the vehicle. The auxiliarv wheels are carried by or connected to a hollow shaft g having a sliding member h which can be clutched either to the gear-box or to one of the gear-wheels i of the change-speed gear. The member h is controlled by springs k and a lever f. When the sliding gear-wheels c are moved to vary the speed, a flange e fixed thereto operates the lever f and clutches the shaft g to the gear-wheel i. The flange e and lever fare so proportioned that after the shaft g has rotated through (say) 180‹ the member h is freed from the gear-wheel, by the lever f slipping past the flange e, and is again locked to the gear-box or other fixed part.
Patent GB-334298-A (GB)
Title: Improvements in vacuum electric tube devices
IPC: H01J19/42
Filed: 1929-06-10
Abstract: 334,298. Robinson, E. Y., and Associated Electrical Industries, Ltd. June 10, 1929. Vacuum tubes.-Two pairs of wires 10, 7, Fig. 1, respectively supporting the grid and anode and connected to wires secured within the pinch 2 are engaged at their upper ends by a bridge 16 of insulating material such as mica which is pro. vided with four holes to receive them, and a glass bead 11 has secured within it three wires of which the outer pair 12 are welded to the free ends of either the anode or grid-supporting wires, the central wire 13 being connected by a thin wire 14, Fig. 2, to the upper end or bight of the V-shaped filament (not shown). The wire 13 extends through the bead 11 and is connected at its lower end to a wire 3 secured within the pinch 2 and bent outwardly therefrom. The grid is of flattened tubular section, with its supporting wires 10 located in its major axis, and the anode may consist of two plates 15 welded to the outerwires 7. The mica bridge 16 is held in position by means of small V-shaped wires 17 welded upon the anode-supporting wires 7.
Patent GB-1313451-A (GB)
Title: High-voltage generator
IPC: H02N1/12
Filed: 1971-05-28
Abstract: 1313451 Electrostatic generators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 May 1971 [2 June 1970] 17777/71 Heading H2A In a belt driven electrostatic generator, vibrations of the machine are detected by a transducer 9 and used to control the charging system 27 to render the output more constant. The electric signals are fed to a pre-amplifier and impedance converter 12, feeding two channels 14, 15 processing the fundamental and second harmonic respectively of the rotational frequency of the belt 2. The signals pass through band pass filters 16, 17, phase shifters 18, 19 and amplifiers 20, 21 to synchronize oscillators 22, 23. The outputs, together with a D.C. component are mixed in network 28, thereby controlling D.C. amplifier 27 connected to the charge electrode 7.
Patent GB-989524-A (GB)
Title: Adhesive layer for adhering a cellulose ester layer to a hydrophilic colloid layer
IPC: B32B27/00
Filed: 1963-05-06
Abstract: A hydrophilic colloid layer such as gelatin or polyvinyl alcohol is coated with a mixture of cellulose nitrate, a styrene polymer containing carbonyl groups and a partially saponified polyvinyl acetate, and then a layer of a cellulose ester is applied.
Patent GB-313320-A (GB)
Title: Valve spring compressor
IPC: B25B27/26
Filed: 1928-06-20
Abstract: 313,320. Scrivener, P. H. J. June 20, 1928. Cramps. - A valve spring compressor consists of a strip of metal bent. to V-shape and forked at the ends and a cam lever a adjustably pivoted to brackets on one limb and bearing on the other limb. The spring is enclosed between the limbs and compressed by depressing the lever, the action of the cam retaining the spring in compression.
Patent GB-385327-A (GB)
Title: Improved impregnation of wood
IPC: B27K3/08
Filed: 1931-06-19
Abstract: 385,327. Preserving wood. POLYSU, C., 11, Strasse Calonfirescu, Bucharest. June 19, 1931, No. 17814. Convention date, Aug. 29, 1930. [Class 140.] Wood is impregnated with a liquid whilst the liquid is subjected to alternating pressures of short duration, each pressure variation covering the whole range of pressure employed and the wood being completely immersed in the liquid throughout each pressure variation. In an example, railway cross-ties of beechwood are immersed in a mixture of creosote and an oil obtained as a residue in petroleum distillation and subjected to four complete alternations of pressure from normal to ten atmospheres, the duration of each period of pressure being 25 minutes and the alternations succeeding each other by 50 minutes. The treatment cylinder is emptied of liquid and refilled after each alternation. In a modification, the cylinder is kept filled with the liquid and the pressure is varied from normal to eight atmospheres, the pressure treatment lasting eight minutes and the alternations succeeding one another by 10 minutes. The treatment may also be applied to railway switch-ties, or poles for telephone, telegraph or electric conduits, &c. Reference has been directed by the Comptroller to Specifications 17002/09 and 317,427, [both in Class 140, Waterproof &c. fabrics].
Patent GB-145668-A (GB)
Title: Improvements in or relating to suction sweepers
IPC: A47L9/04
Filed: 1920-06-30
Abstract: 145,668. Hoover Suction Sweeper Co., (Assignees of Hoover, H. E.). June 10, 1918, [Convention date]. Carpet - sweepers. - The suction hood of a vacuum-cleaner is provided with openings in the end walls, large enough to permit the passage of the brush and normally closed by plates on which the brush is eccentrically mounted and which are placed and locked in adjustable position. Fig. 1 shows a nozzle casing having an opening in its end wall closed by a flanged cap or plate D' having a lug D<3>, Fig. 2, with a hole adapted to register with one of a series of holes D<5> in the wall, the cap being locked by a stud. The brush-shaft passes through the caps at each end, and is shouldered at the part C<2>, and screwed at the ends to engage nuts D<6> by which the caps are tightened on the casing. The shoulders C<2> prevent the caps jamming against the brush bearings. The ends of the shaft are flattened to engage holes D', Fig. 2, in the caps whereby they may be rotated simultaneously. Flanges D<8> on the caps co-act with flanges C<4> on the brush body to form a thread-guard; air is drawn in through holes D<9> in the cap.
Patent GB-400563-A (GB)
Title: Improved pattern-grading machine
IPC: A43D8/10
Filed: 1933-06-26
Abstract: 400,563. Pantographic apparatus. AKTIEBOLAGET LINHAM, 46, Fridhemsgatan, Stockholm.- (Assignees of Dieden, T.; Karlslund, near Orebro, Sweden.) June 26,1933, No. 18149. Convention date, June 30, 1932. [Class 97 (iii).] In a pattern-grading machine, particularly for marking or cutting out boot and shoe patterns, a table carrying the model pattern or the material to form the graded pattern is rectilinearly moved by pantographic mechanism connecting it to a rectilinearly movable guide or beam along which move two carriages connected by pantographic mechanism and carrying respectively a feeler and a scriber and/or punch. In the form shown a beam 3 with a transverse arm 3a is adapted to run on rollers 4 on tracks 1, 2 carried by the bedplate 20. A carriage 5 carrying a reciprocating punch 29 and scriber 31 and a carriage 6 carrying the feeler 42 run along the beam 3 and are connected together by pantographic linkage 15, 10. The link 15 is pivoted at 16 to the carriage 5 and at 14 to a slide 12 which may be clamped by screw 13 in a position corresponding to the enlargement or reduction desired on a graduated arcuate part 10a of the link 10. The latter is pivoted at 11 to the carriage 6 and has an end portion sliding in a diametrical bore in a pivot pin 9 rotatably mounted on a curved extension 8 of the beam 3. The model pattern 46 is supported on a circular plate 43 which may be rotated on the table 26 and secured in desired position by the engagement of a spring stop 45 with notches 44 in the plate 43. The table 26 moves by means of rollers 28 along tracks 27 fixed to the bedplate 20 and is connected to the beam 3 by pantographic linkage 24, 18. The pivot 17 corresponding to the pivot 9 and the pivot 19 corresponding to the pivot 11 are mounted on the arm 3a of the beam 3 and the bedplate 20 respectively. The scriber 31 marks cardboard or the like mounted on the fixed table 32 and the material cut by the punch 29 is clamped by screws 40 between a plate 39 and carriage 37 which may be adjusted along the fixed track 36. In a modification the table 26 mav be fixed and the table 32 movable and connected by links to the beam 3. The punch 29 and scriber 31 may be removable.
Patent GB-333987-A (GB)
Title: Improvements in printing mechanism
IPC: B41L47/42
Filed: 1929-06-13
Abstract: 333,987. Triggs, W. W., (Selectograph Co.). June 13, 1929. Platen machines; addressing and like machines; stencil-printing apparatus. - A printing-machine comprises a movable platen supported in any position of its stroke by a member which is reciprocated through a yielding connection adapted to permit a variable movement of the platen. As shown applied to an addressing-machine comprising stencils or other formes advanced along a guideway 6 into printing position above a pile of envelopes 16 resting on a vertically movable platen 3, the top envelope being removed by hand after each impression, the platen 3 is supported by a wedge-shaped member 4, which is reciprocated horizontally by means of an oscillating arm 37 acting through a spring 33, so that, whatever the height of the pile 16, the platen 3 exerts a uniform upward pressure, further movement of the arm 37 merely compressing the spring. The platen 3, horizontal' movement of which is prevented by a pivoted rod 19, has an inclined lower surface provided with ribs engaging guides in the member 4, which slides on a horizontal rail 12 provided with a stop 12<1> to limit the movement of that member. The arm 37 is oscillated about a pivot 39 by a reciprocating bar 38 guided by means of a pin engaging a slot 48 and provided with a shoulder 49, which, when the bar moves to the left, engages a roller 43 on a pawl 41 pivoted on the arm 37, and moves this arm to the left to actuate the member 4. The pawl 41 subsequently swings out of the path of the shoulder 49, and the arm 37 is returned to its original position bv a spring 28 connected to the member 4, the roller 43 meanwhile riding on the top surface of the bar 38 and finally dropping over its end 50. On the return stroke of the bar 38, a cam surface on the part 50 engages the roller 43 and forces it downwardly so that it rides on the lower surface of the bar and subsequently returns to normal position in the path of the shoulder 49.
Patent GB-1345305-A (GB)
Title: Supercharged two stroke internal combustion engine
IPC: F02B29/04
Filed: 1972-04-19
Abstract: 1345305 Charging two-stroke I. C. engines GOTAVERKEN A B 19 April 1972 [23 April 1971] 18181/72 Heading F1B A two-stroke I. C. engine is supplied with combustion air from compressors 15, 16 in series with an interposed cooler 17 which permits air to enter compressor 16 at substantially the same temperature as that of the ambient air, turbines 13, 14 driving the compressors 15, 16 being in series. Exhaust gas passes from the engine via a receiver 12 to the turbine 13 and thence to the turbine 14 without any interposed receiver, the compressor-turbine units having substantially the same power consumption.
Patent GB-278116-A (GB)
Title: Improvements in threads, cords and fabries
IPC: D06P3/42
Filed: 1926-07-21
Abstract: 278,116. British Celanese, Ltd., Palmer, C. W., and Fulton, S. M. July 21, 1926. Yarns and threads.-New effect threads, cords, and knitted, woven and other fabrics are obtained by combining normal lustrous cellulose acetate yarns with cellulose acetate yarns which have been wholly or partly delustred in known manner. The two threads may be doubled to form a cord suitable for knitting or weaving, or the two separate threads may be combined in the knitting or weaving process. Different effects may also be obtained by taking advantage of the different dyeing properties of the two materials. Thus by dyeing with an insoluble or difficultly soluble colour such as S.R.A. Orange II, as by the methods described in Specifications 219,349, 224,925, 242,393, 242,711, 269,960, 273,819 and 273,820, [all in Class 15 (ii), Dyeing, Processes &c. for], a differential lustre effect in substantially one shade is obtained. With a dyestuff such as Capri blue, the difference in lustre is enhanced owing to the fact that the lustrous parts are dyed a deeper shade than the delustred parts. A violet grey shade on the lustrous portion and heliotrope on the delustred portion may be obtained by combining the two methods above referred to and using S.R.A. heliotrope instead of S.R.A. Orange II.