baber/WOPTO huggingface dataset:
Patent GB-1172735-A (GB)
Title: Ratio Controller.
Inventor: STANTON BENJIMAN DEWITT
IPC: G05D11/13
Filed: 1967-02-27
Abstract: 1,172,735. Correspondence control circuits. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Feb.27, 1967 [Feb.28, 1966], No.9143/67. Heading G1N. [Also in Division G3] Apparatus for measuring and controlling the flow-rate of a liquid (e.g. for blending two petrols being fed to a tank truck) comprises two comparator circuits for comparing the measured flowrate with a reference signal (e.g. the measured flow-rate of a second liquid), one comparator circuit delivering its output via an operational amplifier 30 having a large feedback capacitor C6 to a differential amplifier 20 which also receives the output of the other comparator circuit and has a small feedback capacitor C3. The large capacitor C6 provides a long memory for accurate blending and smooth control response while the small capacitor C3 provides a short time constant memory for fast response control that rapidly approaches the desired blend ratio. As shown in Fig. 2, each comparator circuit comprises two switches which are switched backwards and forwards at respective frequencies proportional to the flow-rates of two liquids being blended. An adjustable calibration voltage is applied to contacts 26 and 14 and an adjustable ratio defining voltage is applied to contacts 25 and 13 whereby the control signal delivered at the output of amplifier 20 represents the difference between the actual and desired flow-rate ratio and is used to control the flow-rate of one of the liquids to maintain the ratio at the desired value. In an alternative arrangement, one of the switching circuits of the right hand comparator circuit is replaced by fixed, adjustable, reference voltage. This arrangement is said to be useful when a number of streams to be blended are controlled with respect to a fixed, adjustable, reference, each stream being controlled by a respective similar circuit, receiving the same reference voltage from a bank of resistors, Fig.3 (not shown).
Patent GB-494900-A (GB)
Title: Improvements in and relating to electric control for electric motors, steam engines and other prime movers
IPC: B66C13/54
Filed: 1937-03-31
Abstract: 494,900. Winding-engines. BRITISH THOMSON-HOUSTON CO., Ltd., LIDDIARD, H. W. C., and PETCH, JUN., T. H. March 31, 1937, No. 9188. [Class 78 (v)] [Also in Group XXXVII] Reversing and speed control of an electric motor, steam engine or other drive 10 for hoists, lifts, and haulage engines, is effected by means of a control lever 21 which also varies a resistance 15 in series with a relay coil 13 fed from a generator 11 driven by the motor 10. The generator has a self or separately excited field winding 12, and if the speed of the motor is greater than that corresponding to the position of the control lever the coil 13 is sufficiently energized to effect operation of contacts 14. Thus the contacts are operated to introduce braking or operate a suitable signal if deceleration does not occur when the control lever is actuated to reduce the speed. Specification 493,354, [Group XXXVII], is referred to.
Patent GB-124958-A (GB)
Title: Improvements in Machine Drills.
Inventor: COX CHARLES EUGENE
IPC: B23Q3/157
Filed: 1918-06-04
Abstract: 124,958. Cox, C. E. June 4, 1918. Drilling-machines.-Relates to multi-spindle machines for boring, reamering, &c., of the type shown in Fig. 2, in which the tools are carried in chucks or sockets 33 in a circular carrier 18 which can be rotated to bring the desired tool into alinement with the driving-spindle 36, and consists in automatic means for engaging the spindle with the chuck and for disengaging it therefrom. Fig. 3 shows one means for engaging the spindle 36 with the chuck 33. Each has formed on it a half clutch 37, 38 which are engaged by lowering the spindle. When the spindle is lowered further it depresses the drill and chuck so that the spring latches 39 are thrown into engagement with the groove 36<a> in the spindle. As the chuck rises, the springs 41 disengage the latches and hold them in the position shown in which they rest on the carrier 18 and support the chuck. Fig. 7 shows a modification in which the latches 39<a>, when swung inwards, move inwards the spring- pressed pins 41 and cause them to engage the headed pin 36f in the end of the spindle. When the chuck is raised the pins press the latches outwards into the position shown in which they support the chuck as described above.
Patent GB-512019-A (GB)
Title: Improvements in and relating to electric cooking apparatus
IPC: A47J37/01
Filed: 1939-03-23
Abstract: 512,019. Electric heating and cooking apparatus. VITAGRILL, Ltd. March 23,1939, No. 9229. Convention date, Nov. 25, 1938. [Class 39 (iii)] In electric cooking apparatus a closed metal cover 1 resting on a plate 16 consists of a lower part 2, which is frusto-conical, and an upper part 3 which is cylindrical. In the part 3 is placed a heater comprising a resistance element 5 mounted in a circular body 7 of porous material which is adapted to absorb the vapours ascending from the food. The plate 16 is provided with the grid 17 and is placed in the dish 33 which acts as a heat-insulating jacket. The cover may be placed in a raised position by means of a cam so that air can circulate around the food being cooked when so desired. The cover may be rested upon the insulating feet 15, in which position the apparatus acts as a hot-plate, the article to be heated being placed on the top of the chamber 2. The speed of cooking may be varied by adjusting the height of theheating element.
Patent GB-557597-A (GB)
Title: Improvements in or relating to electrically heated ovens
IPC: H05B3/00
Filed: 1942-07-04
Abstract: 557,597. Electrically heated ovens. DALGLEISH, J. W., HIGGINBOTTOM, F., and PYE, Ltd. July 4, 1942. No. 9272. [Class 39 (iii)] [Also in Groups XIII and XXXVII] An'oven for treating wire 22, which is thermostatically controlled by its own expansion comprises a nickel tube 1 soldered to copper end pieces 2, 7, the former of which is secured to the frame 5 and the latter bears against a quartz or "Invar" (Registered Trade Mark) sleeve 8. The other end of the sleeve 8 bears against a spring-pressed pivoted lever 10 which is cranked and carries a contact 14 engaging an adjustable contact 15 to control the current supplied to a transformer 20 which supplies current to the nickel tube 1. The tube 1 may be replaced by flat strip conductors on the inner surface of the quartz tube, the differential expansion of the conductors and the tube controlling the contacts. The conductors may be in series.
Patent GB-168348-A (GB)
Title: Chimney sweeping brush head
IPC: F23J3/02
Filed: 1920-03-31
Abstract: 168,348. Price, J., and Price, T. March 31, 1920. Bristles &c., fixing. - A chimney-sweeping brush comprises two wooden blocks 1, 2 recessed on their meeting faces at 8, and between which a washer 4 is placed to assist in holding the ring of bass clamped between the faces on tightening end screw 5. Specifications 21458/05 and 24520/07 are referred to.
Patent GB-143360-A (GB)
Title: Improvements in wheels for vehicles
IPC: B60B3/04
Filed: 1919-04-11
Abstract: 143,360. Riley, Ltd., and Rush, H. April 11, 1919. Disk wheels ; hubs.-A wheel of the single-disk type is secured to, or formed in one with, the hub cap. In one construction, Fig. 1, the disk 1 is riveted to the hub cap 7, and is shaped at the periphery to form one part of the rim 2. A strengthening-piece 3 is welded or riveted to the disk, and the other part 4 of the rim is secured bv bolts 5. In another construction, the disk 1 and hub cap are formed integral, and the periphery of the disk is flanged and welded or otherwise secured to the rim 10. Reinforcing-disks 11 of decreasing diameter are added to give additional strength to the wheel.
Patent GB-1483058-A (GB)
Title: Vinyl ester copolymer latices and their preparation
IPC: C09D131/02
Filed: 1974-03-01
Abstract: 1483058 Vinyl ester copolymers SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 27 Feb 1975 [1 March 1974] 9328/74 Heading C3P Polymer latices are produced by (1) emulsion copolymerizing in aqueous medium (a) a vinyl ester of a saturated aliphatic mono-carboxylic acid whose carboxyl group is attached to a tertiary or quaternary carbon atom, with (b) one or more other ethylenically unsaturated monomers at least one of which is a glycidyl ester of a C 3-4  alpha-beta ethylenically unsaturated carboxylic acid in an amount of 0À5-5À0 wt. per cent based on total (a)+(b) monomers; and (2) reacting the copolymer formed with ammonia in an amount sufficient to convert at least 50% of the glycidyl groups into hydroxyaminopropyl groups. Numerous monomers are listed which may be present in addition to the essential ones. In an example, the copolymer reacted with ammonia is formed from the vinyl ester of mixed C 10  saturated monocarboxylic acids, vinyl acetate, acrylic acid and glycidyl methacrylate. Use.-In latex paints.
Patent GB-494649-A (GB)
Title: Fuel injection arrangements for multi-cylinder diesel engines
IPC: F02M59/00
Filed: 1938-03-26
Abstract: 494,649. Regulating. CESKOSLOVENSKA ZBROJOVKA AKCIOVA SPOLECNOST BRNO. March 26, 1938, No. 9349. Convention date, March 26, 1937. [Class 7 (vi)] [Also in Group XXVIII] In a radial-cylinder Diesel engine having a master connecting-rod 3 and auxiliary rods 6 to auxiliary cylinders, the master cylinder is supplied with less fuel at high loads than the auxiliary cylinders, in order to prevent overheating. As shown, each cylinder has an injection pump 8 driven by a cam 12. The releasing edges a of the injection plungers g for supplying the auxiliary cylinders are steeper than the edge a of the plunger 10 supplying the master cylinder, so that as the load increases, the master cylinder receives relatively less fuel.
Patent GB-104811-A (GB)
Title: Improvements in Apparatus for Automatically Regulating the Feed of Fuel in Liquid Fuel Engines.
Inventor: FIELDING SAMUEL JOHN
IPC: F02D1/02
Filed: 1916-07-04
Abstract: 104,811. Fielding, S. J., Wass, J. R., and Salmon, E. H. July 4, 1916. Lever-actuated pumps; regulating delivery by by-passes.-A liquid-fuel injection pump in which the moment of injection and the cut-off are adjusted independently comprises a cam-actuated plunger A working in a barrel B containing a governor-controlled sleeve C. The actuating-lever H, which determines the position of the plunger in its barrel, is adjustably mounted upon a pin J. The pump is fed through a pipe E' from a tank F, and during the periods of the forcing strokes when the pump is not discharging through the outlet pipe W, the fuel is returned to the supply tank through the passages D, P in the plunger and the passage M in the barrel. Cut-off occurs when the passage E coincides with the passage M, this point being varied by the sleeve C. The sleeve may be moved axially by a pin-and-slot device or by a screw.
Patent GB-857268-A (GB)
Title: Improvements relating to bricks and brick structures
IPC: B28B11/04
Filed: 1958-03-24
Abstract: 857,268. Moulding plastic beads on bricks. B.T.R. INDUSTRIES Ltd., and WILSON. A. J. March 23, 1959 [March 24, 1958], No. 9413/58. Class 87(2). [Also in Group X] To provide a bead 10 of plastic or elastic material, e.g. polyvinyl chloride, on a brick, an adhesive is applied to the portions of the brick to receive the bead &c., the brick is inserted with its face 15 downwards in a mould 16 and liquified plastic composition is poured into the _mould and set or allowed to set. A liquified plastic composition may first be applied and set around the edges of the face 15 to make a seal with the bottom of the mould 16.
Patent GB-547475-A (GB)
Title: Improvements relating to electric switches with rubbing contacts
IPC: H01H1/20
Filed: 1941-07-25
Abstract: 547,475. Switch contacts; push-button switches. CHANCE BROS. & CO., Ltd., and HALLET, L.,B. H. July 25, 1941, No. 9463. [Class 38 (v)] A contact-bridging bar c with parallel flat sides g and rounded ends which bear on the contacts, is mounted in a push-bar d in a slot which has abutments i, j such that, on pushing the bar abutment i bears on and rotates the bridge-bar c so that on reaching the contacts, the rounded ends rub to ensure electrical connection. Spring-pressed steel balls o bear on the bar to support it resiliently in the holder d. One or two pairs of contacts may be used, and in a modification, the holder is stationary and the contacts move. The bridge-bar may be carried on a pivoted arm instead of a sliding holder.
Patent GB-1007076-A (GB)
Title: Improvements in door and like catches
IPC: E05C19/02
Filed: 1964-03-06
Abstract: 1,007,076. Latch fastenings. G. E. W. LEWIN. March 6, 1964, No. 9498/64. Heading E2A. A catch comprises a housing 1, a cog wheel bolt mounted for rotary and transverse movement in the housing and projecting from the housing for engaging a striking plate 23, and a compression spring 13 in the housing acting through an intermediate member 11 to oppose rotary and inward transverse movement of-the bolt, the force of the spring being exerted upon a detent cog wheel 9 which is rigidly secured to and is smaller than the bolt. As shown the bolt comprises two similar cog wheels 7, 8 each having the same number of teeth as the wheel 9 and the member 11 engages the wheel 9 through a roller 16. The spring 13 abuts one end of the casing and engages a stud-like portion 12 of the member 11. The member 11 has two prongs that it partially encircles the detent wheel 9 and the roller 16 is positioned between the prongs; it is guided by two discs 17, one at each side of the wheel 9. In a modification the two wheels of the bolt, instead of having gaps between the teeth aligned with the gaps between the teeth of the detent wheel, have their gaps aligned with each other but staggered as compared with the gaps of the detent wheel. The gaps between the teeth are also very shallow.
Patent GB-917120-A (GB)
Title: Improvements in or relating to straight bar knitting machines
IPC: D04B11/04
Filed: 1959-03-19
Abstract: 917,120. Knitting-machines. SCHELLER, J.,and SCHELLER H.,[tradingas SCHELLER TEXTILMASCHINENFABRIK, GEB.]. March 19, 1959 [Dec. 29, 1958], No. 9505/59. Class 74 (2). Above the presser edge formed on the lower portion 2 of the sinker head of a rib machine, there is provided an auxiliary presser 3a which, except where its edge is gapped, in the region of each second or nth frame needle, presses the beards of frame needles 4 sufficiently early to ensure that the thread kinks which have been sunk around them shall be pressed off and taken by machine needles 5, to be knitted into rib stitches. The auxiliary presser may be exchangeably secured, as by screws. Gaps may be left in the row of machine needles at a spacing which is twice or n times the distance between the frame needles. The machine needles are each provided with a loop spreader having a surface 5a in the plane containing the machine needle stems. An edge 5b of the surface extends at an acute angle to the stem axis, an edge 5c extends at a larger acute angle; and a projection 5d extends upwardly at right angles to the surface.
Patent GB-1303535-A (GB)
IPC: B01J19/18
Filed: 1970-02-27
Abstract: 1303535 1-Butene polymerization reactor CHEMISCHE WERKE HULS AG 27 Feb 1970 [1 March 1969] 9507/70 Heading C3P [Also in Division B1] 1-Butene is continuously suspension polymerized at 30‹ C., 2 at. g. using as catalysts diethylaluminium monochloride and titanium tetrachloride in a diluent which is a mixture of C 4  hydrocarbons, for example, a cracked gas cut containing at least 50% 1-butene, in an agitated reactor having a cylindrical wall, dished ends and a curved annular fillet between the wall and each dished end, minimum dimensions for the reactor being specified (see Divisions B1-B2).
Patent GB-159230-A (GB)
Title: Improvements relating to carburetters for internal combustion engines
IPC: F02M7/06
Filed: 1919-04-15
Abstract: 159,230. Fagard, J. April 15, 1919. Addition to 105,309. Spray carburettors. - In carburettors having a fuel well 4 open to the atmosphere, and communicating through a restricted orifice 6, with the fuel passage between the float chamber and the main jet 1, an auxiliary jet 13 being supplied for slow running from the well through an upstanding tube, the top of the tube extends beyond the normal fuel level, the tube being filled by a hole 10 in the side of the tube.. The auxiliary jet goes out of action as the suction on the main jet is increased. A starting-jet 15 dips into the well, the bottom of this jet being above the hole in the tube.
Patent GB-236312-A (GB)
Title: Improvements in furnaces or kilns for the production of cement
IPC: F27D13/00
Filed: 1924-04-15
Abstract: 236,312. Grote, L. April 15, 1924. Drying and calcining furnaces.-In a furnace for the manufacture of cement the slurry or mixture is dried in shallow pans on a conveyer N, situated wholly within a long drying-chamber J, by direct contact with waste gases from the calcining chamber A to which the dried material is supplied through a hopper F and an opening E in the roof. The calcining-chamber is heated by liquid or pulverulent fuel burners G at its upper end and the gases therefrom are led through a chamber in the double roof C and flues L to side chambers K, in communication with the drying- chamber through openings M on a level with the upper lap of the conveyer. The gases may be delivered downwards on to the conveyer from a roof chamber, which may be provided as an alternative or in addition to the side chambers K. Air may be blown into the drying chamber by a fan R. The calcining- chamber is preferably of such a depth that the material cools down during its descent to the bottom discharge openings.
Patent GB-858641-A (GB)
Title: Improvements in electrical measuring apparatus
Inventor: MEDLOCK REGINALD STUART
IPC: G01L11/00
Filed: 1956-03-27
Abstract: 858,641. Pressure difference indicators. KENT Ltd., G. March 26, 1957 [March 27, 1956], No. 9571/56. Class 40 (1). An electromagnetic pump is arranged to create a pressure difference which exactly balances the pressure difference between two fluid supply lines so that the current through the pump is a measure of the pressure differences between the supply lines. Two chambers 7 are subdivided by diaphragms 8 to form chambers A, B, C and D. Supply lines 6 are connected to the chambers A and D, and chambers B and C are connected together via an electromagnetic pump P. Ferrous attachments 9 are made to the diaphragm to co-operate with a differential transformer T, the primary 11 of which is excited by a supply 12 and the secondaries of which are applied to an amplifier 12. The output of the amplifier is rectified in 13 and finally fed to the pump P. When a pressure difference occurs in the supply lines the diaphragms move and a resultant signal is fed to the amplifier which in turn causes a current to be fed to the pump so that a pressure difference opposing the initial pressure difference is set up across the pump. The rest position is obtained when the opposing pressure differences just balance. Indication of the pressure difference is given by measuring the potential drop across resistor 14. Chambers B and C are made larger than A and D so that if overloading occurs the fluid is completely expelled from chamber D (or A) and the reinforced centre of the diaphragm seals off the inlet. The other diaphragm is then supported against the excess pressure in A (or D) by the incompressible fluid in connected chambers B and C. Several pumps in series may be used to build up sufficient back pressure and the differential transformer may be replaced by means such as a high-frequency capacity probe, a photo-cell and light beam arrangement, electrical contact arrangement, a magnetic modulator, a variable inductive device or by means to measure change in resistance of the conducting fluid contained in the chambers. If the magnetic field of the pump is A.C. excited the current through the liquid may also be A.C. and in such cases rectifier 13 is not needed. In both D.C. and A.C. arrangements a linear low is obtained if a pump with independently excited magnetic field is used and a square low is obtained if the current through the liquid is used also to excite the magnetic field.
Patent GB-610131-A (GB)
Title: Improvements in or relating to apparatus for playing gramophone records
IPC: G11B25/04
Filed: 1946-03-28
Abstract: 610,131. Gramophones. BARRACLOUGH, G. D. March 28, 1946, No. 9573. [Class 40 (ii)] The interior of a radiogramophone cabinet 1 is illuminated by a lamp 7 and a tell-tale indication is given outside by an L-shaped bar 8 of translucent material. One end of the bar is situated adjacent the lamp and the other end projects outside the cabinet.
Patent GB-141506-A (GB)
Title: Improvements in or connected with carburetters for internal combustion engines
IPC: F02M1/00
Filed: 1919-04-15
Abstract: 141,506. Watling, A. April 15, 1919. Vaporizers, external.-A carburettor of the type described in Specifications 20899/04 and 28276/04 is combined with a vaporizer comprising a spiral web B attached to, or formed with, the exhaust pipe A and enclosed by a casing C held in place by end plates D. The spiral chamber so formed has an inlet E from the carburettor F and an outlet G to the engine. The inner wall of the exhaust pipe may be corrugated or provided with heat-conducting projections.
Patent GB-472907-A (GB)
Title: Improvements in and relating to the tempering of sheets or articles of glass
IPC: C03B27/004
Filed: 1936-04-01
Abstract: 472,907. Tempering glass. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY, & CIREY. April 1, 1936, No. 9640. Convention date, April 10, 1935. [Class 56] A method of cooling glass sheets or other articles during the operation of tempering consists in absorbing heat from the surface of the glass by the contact therewith of brushes formed of fine wires. The cooling-action of the brushes may be supplemented by jets of fluid, such as air. The brushes 5, Fig. 3, may be supported in vertical frames 7 attached to carriers 8 which can be moved to and from one another on rails 9. The sheet of glass 12 is supported in a frame 13 which can travel along a rail 14 and is provided with clips 16 of thin metal to grip the glass. When a sheet is required to be tempered unequally over its surface, the brushes may be wired less densely in different areas, or they may be in the form of mats 17, Fig. 6, in which the wires are grouped in areas surrounding unwired square spaces. With the latter construction, jets of air may be used to cool the areas of glass enclosed by the wires of the brushes, and air jets may be directed also between the wires of the brushes. When tempering glass tiles which vary in thickness, such as those of triangular cross section, they are enclosed in a box which is lined on its inner surface with the brushes, and the wire may be packed more closely over the thinner parts of the tiles. The brushes may be mounted on rotatable discs, or on endless bands, by which they are moved continuously over the surface of the glass, or the glass may be moved between two sets of cylindrical brushes which are arranged parallel with one another and rotate on fixed axes. In each case, the inoperative portions of the brushes are cooled by moving them in contact with the surface of water containers, or by circulating water through the stocks to which the wires are secured.