baber/WOPTO huggingface dataset:
Patent GB-834498-A (GB)
Title: Improvements in or relating to circuit arrangements for signalling between a movable object and a fixed position by means of a controlling magnetic field
IPC: B61L13/04
Filed: 1957-11-11
Abstract: 834,498. Controlled non-linear inductors. SIEMENS & HALSKE A.G. Nov. 11, 1957 [Nov. 10, 1956], No. 35123/57. Class 40 (9). A pair of indentical open-cored chokes have power windings 4, 5, Fig. 3, connected with rectifiers 6, 7 to an A.C. supply 8 in autoself-excited parallel relationship, and are associated with a relatively movable permanent magnet which aids the flux of one choke and opposes the flux of the other when adjacent thereto, the disturbance of the flux balance causing one core to saturate more readily than the other so that a direct current component is produced in the alternating current path. The sense of the flux unbalance and the consequential polarity of the D.C. component depends on whether the permanent magnet is adjacent the polepieces 1 or 2, Fig. 1, of the choke cores, and the arrangement is utilized to selectively control the operation of a polarized relay 10 which is shunted by a condenser 9. It is stated that the arrangement may be used to indicate the position of skips relative to the sills in a mine winding shaft. In a modified circuit, Fig. 5, several chokes 4, 5, 14, 15, 24, 25, may be connected in series. Alternatively, each pair of chokes may be associated with its own A.C. supply 8, 18, 28 and condenser 9, 19, 29, Fig. 7, in a parallel circuit arrangement. This circuit includes filtering elements 49 and 50, and a D.C. injection circuit comprising an A.C. source 53, rectifier 51 and resistor 52 which neutralizes any out-ofbalance D.C. component produced by the chokes when the permanent magnet control is ineffective.
Patent GB-357856-A (GB)
Title: Improvements in or relating to piston-controlled ports in the cylinders of two-stroke internal combustion engines
IPC: F02B75/02
Filed: 1930-11-21
Abstract: 357,856. Cylinders. SULZER FR’RES SOC. ANON., Winterthur, Switzerland. Nov. 21, 1930, No. 35138. Convention date, Dec. 18, 1929. [Class 7 (ii).] In a two-stroke engine cylinder some or all of the ports 9, 10 in the upper of two rows of terminal airinlet ports are tangential to the bore, while those, 5, 7, in the lower row are radial. The ports 9 may be radial and may extend, like the ports 10, above the exhaust ports 6, or all the ports 9, 10 may be of the same height.
Patent GB-642896-A (GB)
Title: Improvements in or relating to spinning and twisting frames
IPC: D01H1/06
Filed: 1946-11-28
Abstract: 642,896. Spinning and twisting machines. ICKRINGILL & CO., Ltd., I., and ICKRINGILL, A. D. Nov. 28, 1946, No. 35339. [Class 120(ii)] Textile yarns are spun or twisted by leading yarn in an axial direction to upper guide means of a rotary cap flyer, then through the guide means and over the outer periphery of the flyer to lower guide means which may be selected to allow adjustment of the length of yarn in frictional contact with the flyer, before passing to a lagging bobbin from the lower guide means. Yarn 13 is passed through the hollow spindle of a mounting 9 to upper guide eyes in a cap 1, or through a hole in the wall of the hollow spindle and across a groove in the shoulder of the cap, thence over the periphery of the cap to one of several guide eyes arranged round the lower rim of the cap and with slits leading to the rim for threading. From the lower guide eye, the yarn passes to a bobbin 16 on a spindle 17, which may be hinged, or mounted on a hinged rail, so that it may be tilted for doffing. If an automatic doffing arrangement be used which involves turning the spindle 17 into a pendant position, the bobbin 16 is held by a spring clip 24. To facilitate piecening the cap may be held stationary by the insertion of a key through an opening 22 in a rail 10 to engage a pin 23 projecting from the cap and the bobbin may be supported on an extended spindle by a spring, or other retaining element, which permits quick release to allow the bobbin to fall clear of the cap for piecening. A conical yarn guide 25 with grooves 26 may be provided within the top of the cap to render threading easier.
Patent GB-945905-A (GB)
Title: Improvements in or relating to the production of centrifugal castings
Inventor: BEECH AUSTIN SYDNEY
IPC: B22D27/11
Filed: 1961-10-02
Abstract: 945,905. Centrifugal casting-machines. FOUNDRY EQUIPMENT Ltd. Oct. 2, 1962 [Oct. 2, 1961], No. 35539/61. Heading B3F. A centrifugal casting process comprises the use of a mould of hard-rammed sand with its cavity or cavities located wholly outside the axis of rotation and an axial pouring opening, the mould being poured while at rest or in slow rotation and thereafter spun at a peripheral speed of at least 800 feet/min. In one embodiment, filling of the mould cavities 50 after pouring is ensured by the application of pressure by a lever-operated plunger 58, the pressure being maintained during centrifuging and solidification by pinning the lever 56 to posts 59.
Patent GB-1152435-A (GB)
Title: Improvements relating to electrical signal processing systems
Inventor: PERCIVAL WILLIAM SPENCER
IPC: H04B1/64
Filed: 1965-06-01
Abstract: 1,152,435. Compandors. ELECTRIC & MUSICAL INDUSTRIES Ltd. 24 May, 1966 [1 June, 1965; 19 Aug., 1965], Nos. 23207/65 and 35548/65. Heading H4R. A compandor system, particularly for use in the production of a tape master for a disc recording, has frequency conscious inverse networks in the compressor and the expander, each network including a reactance and a variable resistance device which in one network is controlled to vary as the envelope of a function of the voltage across the resistive device while in the other network the resistance is controlled to vary as the inverse of the envelope of the same function of the voltage across the device. One network has the input applied as a voltage across the network and the output taken as the current through the network while the other network has an input current passed through the network and the output taken as the voltage across the network, the input to one network being the output signal of the other. Fig. 1 shows a block diagram of the system in which the compressor comprises a filter comprising resistor 2 and capacitor 3 the current through which is applied, via the virtual earth input amplifier 4, to the network including the resistive impedance 5 and capacitor 6, the voltage across the network being the signal applied to, e.g. a magnetic recorder. The resistive impedance 5 is controlled in accordance with the reciprocal of the envelope of a function of the voltage appearing across the impedance and may therefore comprise the divider of Specification 1,074,941 while the control signal generator may take the form of the rectifier and elongator of Specification 1,044,003. After reproduction from the tape the voltage is applied across a resistive impedance 9 and capacitor 10, forming the expander, and the current through the network is fed, via the virtual earth input amplifier 13, to a filter network 14, 15, and output terminal 16. The resistive impedance 9 is controlled in accordance with the envelope of a function of the voltage across the impedance 9 and comprises a multiplier 9 fed with the output of a control signal generator which is a rectifier and elongator of the same form as is used in the compressor. The capacitors 6 and/or 10 may be replaced by an inductor connected in parallel with the resistive impedance, Figs. 5 and 6 (not shown). The control signal channel may be frequency conscious, Figs. 7a and 7b (not shown). The variable resistive devices may include Zener diodes or field effect transistors.
Patent GB-856560-A (GB)
Title: Improvements in or relating to electrically operated sliding closures for vehicles
IPC: B60J7/057
Filed: 1957-11-14
Abstract: 856,560. Vehicle roofs. GOLDE & CO. G.m.b.H., H. T. Nov. 14, 1957 [May 14, 1957], No. 35551/57. Class 108(1). A vehicle 1 having a roof aperture is provided with a rigid or flexible cover 2 actuated by a pair of worm cables 10 connected to the forward end of the cover at 13, 14, the cables being moved by a worm wheel 5 driven by an electric motor 3 which may be housed under the roof or in the boot. When a flexible cover is used intermediate hoop sticks 6, 7 may be provided. When a rigid cover is used the ends of the cables may be pivotally connected to plates pivoted under the cover so that by movement of the plates from the horizontal position to the vertical position the rear end of the cover is raised to be flush with the fixed part of the roof.
Patent GB-1433416-A (GB)
Title: Hydrocarbon separation process
IPC: C07C7/13
Filed: 1973-07-26
Abstract: 1433416 Separating hydrocarbons by adsorption BRITISH PETROLEUM CO Ltd 18 July 1974 [26 July 1973] 35614/73 Heading C5E [Also in Division B1] A mixture of n-paraffins boiling in the gasoline range with non-straight chain hydrocarbons is passed through a bed of 5  molecular sieve to produce an effluent of reduced nparaffin content and n-paraffins are desorbed from the bed in a desorption stage by reducing the pressure in the bed by means of an ejector (i.e. a jet pump) using recycled n-paraffin product as motive fluid. The desorption stage can be preceded by a purge stage in which pressure in the bed is reduced by direct contact condensation of purge effluent vapour using recycled purge effluent as quench liquid. The adsorption, purge and desorption stages are carried out at 300-450 C. and final pressures of 3-200 p.s.i.a., 0À1-25 p.s.i.a. and 0À05-2 p.s.i.a. respectively. The feed can be obtained in an isomerization process to which the separated n-paraffins can be recycled for conversion to isoparaffins. In examples the n-paraffin motive fluid is fed to the inlet of the ejector at 360 C. and either 165 or 169 p.s.i.a., the effluent from the ejector containing the desorbed n-paraffins is cooled to 49 C. and 15 p.s.i.a. and a portion of the condensate formed is reheated to 360 C. and recycled to the ejector.
Patent GB-1321504-A (GB)
Title: Warp knitting machine
IPC: D04B23/12
Filed: 1971-07-29
Abstract: 1321504 Knitting-machines J P STEVENS & CO Inc 29 July 1971 [4 Aug 1970] 35757/71 Heading D1C In a warp knitting machine in which wefts are laid between two endless chains 1L, ER- which convey them to the knitting line - by a diagonal endless chain 5 carrying yarn packages, the yarns are tensioned only when taken and gripped by the conveying chains. The yarns are thereby placed across the chains in tension, but strain on the yarn and linting is avoided: The yarns are tensioned by tension devices, e.g. cymbal discs 20, on an endless chain 8 moving parallel to and synchronously with the diagonal chain 5. The discs 1 may be forced apart over the major part of the run, by a cam operated rod 15 engaging between them. Alternatively the discs may be operated by solenoids.
Patent GB-1410993-A (GB)
Title: Greenhouses or like structures
IPC: A01G9/16
Filed: 1972-08-01
Abstract: 1410993 Stud and socket fastenings ALTON GLASSHOUSES Ltd 30 July 1973 [1 Aug 1972] 35784/72 Heading E2B A greenhouse or like structure constructed from a structural assembly comprises a plurality of rigid members 1, 9 connected together by removable studs 13, each member having elongate openings 3a, 12 in register and longitudinally aligned with the marginal parts of each member defining the openings overlying one another. Each stud comprises a head 14 adapted for manual rotation and having an abutment face 17 engaging with the outer face of the marginal part of the member 9, a shank 16 extending from the head and through the aligned openings, and at least one lug 18 extending laterally from the free end of the shank engaging with that adjacent outer face of the marginal part of the member 1 which extends transversely to the longitudinal axis of the aligned openings. The lug has an inclined cam face 19 in such latter engagement and the assembly is such that in the locked position the members are held tightly together between the abutment and the cam face, but when the stud is rotated so that the axis of the lug is aligned with the longitudinal axis of the aligned openings the stud may be removed to disconnect the members. The stud may be made from plastics material and be provided with a square or hexagonal formation 15 or a screw-driver slot or other recess.
Patent GB-358141-A (GB)
Abstract: 358,141. Money - delivering apparatus ; tills. CRISP, W. J., White Hart Hotel, and SANSOM, G. H., 42, Baker Street, both in Reading. July 9, 1930, No. 20829. [Class 116.] In a cash register the total value of coins received is indicated by automatic coin-counting mechanism associated with each of a number of coin-receiving means for coins of different values, and the total value of coins given in change is indicated by coin-counting mechanism actuated by dispensing devices associated with each coin-receiving means. The coins received are inserted into shoots 42, one shoot being provided for each denomination of coin. As the coins pass down the shoots they depress spring plungers 51 and rotate indicator dials 56 viewable through windows 43. The dials are connected serially by transfer-gearing, with the exception of the half-crown dial which transfers independently to the pound dial. The shoots terminate in storing tubes 21, communicating with a money-delivering apparatus of the kind described in Specification 358,135. The coins in the tubes are visible through slits 85. In the event of the tubes becoming too full, incoming coins are diverted into a compartmented drawer 87 by pushing in oblique plates 86. Conversely, additional coins may be inserted into the tubes through slots 88. Notes are stored in drawers 46, 47 each having an indicator 48 set by a knob 49,
Patent GB-522449-A (GB)
Title: Improvements in or relating to cable traction systems
IPC: B62B13/08
Filed: 1938-12-08
Abstract: 522,449. Rope railways. PEROT, G. Dec. 8, 1938, No. 35863. Convention date, Dec. 11, 1937. Addition to 499,612. [Class 104 (ii)] [Also in Groups XXXI, XXXII, and XXXIV] In the invention of the parent Specification, wherein a sledge-like vehicle hauls itself up a slope &c., along a plurality of stationary cables laid on the ground, the end rollers, on the vehicle for guiding the cables through the winding mechanism, are slidably mounted between springs and are connected to a steering control lever or wheel so that they may be shifted transversely according to the lie of the vehicle in relation to the cables. Modified forms of sprags or ground-engaging means are also described. In the form shown in Fig. 1, the guide rollers 71 are mounted between springs 76,77 in transverse channel members 72 and are connected by cords 81, 82 to a steering handwheel 93. In another form, Fig. 6 (not shown), the'cables pass between interengaging horizontal grooved rollers slidably mounted on crossbars of a forward projection of the vehicle frame. In the modification shown in Fig. 3, the guide rollers 79 are mounted on a hoop-shaped bar 91 slidably mounted near its ends 88 in bearing members pivotally carried by the crossbar 89 so that the bar 91 can rise and fall while it rests on the ground ; the device being steered in opposition to centralizing springs 91<SP>1</SP>, by means of cords 81, 82. In the arrangement shown in Figs. 12 and 13, the skis, upon which the vehicle runs, are each provided with a keel tube 106, which may be formed in sections, one or more intermediate sections 107 being pivoted and subject to the action of a spring so that when free it tends to dig into the ground to brake the descent of the vehicle down a slope, being normally however, secured by a wedge pin 104 connected by a cord 105 to the brake control means described in the parent Specification. The end section 111 of the keel tube may be pivoted either at its end or centrally as shown in Fig. 13, and diverted for steering purposes by worm or other gearing operated from the driver's position. Skis without the keel tube may be provided with flat, spade-like sprags on their undersurfaces, normally secured out of action by a pin as in the arrangement shown in Fig. 12.
Patent GB-863725-A (GB)
Title: Counting filaments
IPC: G06M1/08
Filed: 1958-11-07
Abstract: 863,725. Filament counting apparatus. HALENAR, S. L., and KAEPERNIK, W. A. Nov. 7, 1958 [Nov. 7, 1957], No. 35892/58. Class 40(3) [Also in Group XIX] In apparatus for counting filaments, e.g. surgical sutures, the filaments are propelled singly past a photo-electric counting station by an air blast and arrangements are included to prevent further feed when a predetermined number of filaments have been counted. The apparatus, Fig. 3, includes a base 15 and shoe 16 which define a gap through which the filaments are laterally fed and the size of the gap, as measured by the gauge member 70a and indicated by the meter 70, is preset to the particular size of filament to be counted by the control 72. Compressed air supplied via solenoid valve 47 provides an air blast from an orifice 45 and a solenoid 64 operates a pair of fingers, (Fig. 8, not shown) which rise above the surface of the base 15 to prevent the passage of the filaments from left to right through the gap.. Adjustable members 49 and 53 define a second gap 56 through which light is projected from a source 57 to a photo-electric detector 58. In operation, a bundle of filaments placed across the base 15 is subjected to slight pressure which feeds them singly through the gap whereupon the air jet propels one filament at a time through the light beam indicated by the arrow, Fig. 6, thereafter each filament passes through the slot formed by the guard member 78 and the block 53. On an associated panel (Fig. 1, not shown) the number of filaments counted is indicated, in addition the panel includes means whereby the number required can be preset and when that number has been counted the air solenoid 47 is switched off and the solenoid 64 is operated to raise the fingers above the base surface to prevent further passage of filaments through the gap.
Patent GB-508383-A (GB)
Title: Improvements in or relating to the manufacture of glycollic acid
IPC: C07C51/12
Filed: 1937-12-29
Abstract: 508,383. Glycollic acid. DU PONT DE NEMOURS & CO., E. I. Dec. 29, 1937, No. 36031. Convention date, Dec. 31, 1936. [Class 2 (iii)] Glycollic acid is produced by reacting formaldehyde or a polymer thereof 'with carbon monoxide in the presence of water, preferably in the presence of an acid catalyst such as sulphuric, hydrochloric, phosphoric, formic- or glycollic acid or their acid salts or acid esters, or boron fluoride. The process may be effected at 5-1500 atmospheres and 50-350‹ C. The glycollic acid may be separated by distillation, preferably under reduced pressure, or by crystallization after separation of the catalyst and removal of excess water under reduced pressure. The process may be effected in an autoclave or continuously in counter-current, and the apparatus may be of glass or silica or lined with glass, porcelain, silver, chromium or stainless steel. In the examples sulphuric, hydrochloric, phosphoric, formic, and glycollic acids and boron fluoride are used as the catalysts, with various proportions of water and various temperatures and pressures.
Patent GB-412216-A (GB)
Title: Improvements in pickers for looms
IPC: D03D49/36
Filed: 1932-12-21
Abstract: 412,216. Loom pickers. BAIRSTOW, H., 42, Devonshire Street, and SMITH, R., 8, East Avenue, both in Keighley, Yorkshire. Dec. 21, 1932, No. 36164. [Class 142 (iii).] A picker of aluminium or aluminium alloy, is formed with a recess d and a part f around the hole 2<a> for the picking- spindle. A slot h is provided in the part f for the reception of a felt pad h<1> containing lubricant. A rectangular recess a is provided for the reception of strips b of raw hide for engagement with the shuttle tip, an aperture being provided through which an instrument may be passed for removing the layers of hide when worn. According to the Provisional Specification a folded piece of raw hide may be secured to a flat shuttle engaging portion formed on the picker. Reference has been directed by the Comptroller to Specifications 4871/85, [Class 142], and 606/10, [Class 142 (iii)].
Patent GB-180366-A (GB)
Title: Improvements relating to baking and like ovens
IPC: A21B1/14
Filed: 1920-12-24
Abstract: 180,366. Beanes, W. H. Dec. 24, 1920. Liquid and gaseous fuel furnaces. - In a Perkins tube oven fired by oil or gas, damage, more especially to the tubes, is prevented by automatically limiting the period during which the burners are in action and by other safeguards described below. In the case of oil firing a predetermined quantity of oil is used, in the case of gas firing, a meter with time cut-off. Fig. 1 illustrates the former method, the oil container i being arranged below the burners and oil being forced therefrom by the same supply of air which effects atomization so that if this supply fails the oil supply is cut off. As shown in dotted lines, the oil container may be above the burners and a gravity feed be employed, the inlet and outlet valves of the container being interlocked to ensure the supply of a measured quantity. The burners are mounted on pivots n embodying valves, so that in the event of an explosion acting to blow the burners outwards, the fuel is cut off. The tube ends are protected from the direct heat of the flame by a curved shield or spreader as described in Specification 178,055.
Patent GB-1394589-A (GB)
Title: Fuel injection pumps for internal combustion engines
IPC: F02M63/02
Filed: 1972-08-03
Abstract: 1394589 Fuel injection pumps ROBERT BOSCH GmbH 3 Aug 1972 [4 Aug 1971] 36217/72 Heading F1A [Also in Division G3] In a rotary distributer type fuel injection pump in which the delivery is controlled electronically, a speed responsive governor 38 (see Division G3) connects the working chamber 28 to a relief passage 39 if a fault in the electronic control causes the engine to reach a predetermined maximum speed. The delivery is controlled by a rotatable throttle member 10 disposed in a bore 17 which intersects the fuel inlet passage 22, 24. The throttle 10 is turned by a magnet 1, the angular movement of which is determined by e.g. engine speed and temperature dependent electric signals supplied through pins 48 and contact springs 45 to coils 2. The magnet 1 drives the throttle 10 through a shaft 4 having a crank-pin 12 which slides in a slot 13 in the throttle member 10.
Patent GB-1512457-A (GB)
Title: Production of floor toppings by flowing inorganic binder suspensions over porous open-cell underlays
IPC: C04B28/14
Filed: 1975-09-03
Abstract: 1512457 A method of making a floor BAYER AG 3 Sept 1975 [3 Sept 1974] 36249/75 Heading E1G A method of making a floor comprises adding water to a synthetic or natural anhydrite binder, optionally together with an auxiliary substance, applying the resulting free-flowing mixture to a water absorbing layer comprising a rigid porous open-cell material based on anhydrite, gypsum, Portland cement, lime or a mixture thereof and produced by casting a free-flowing foamed mixture which hardens with the cell structure intact, and allowing the resulting composite to harden. The water absorbing layer may be a filmforming or water repellent substance to slow the absorption of water. Specification 1466928 is referred to