baber/WOPTO huggingface dataset:
Patent GB-873296-A (GB)
Title: Improvements in or relating to the preparation of lactones
Inventor: CANNON DOUGLAS GEORGE
IPC: C07D307/33
Filed: 1957-02-08
Abstract: Crystalline glucosaccharolactone containing an enhanced proportion of 1:4-glucosaccharolactone is obtained by cooling a concentrated aqueous solution containing a mixture of glucosaccharic acid and the 1:4- and 3:6-glucosaccharolactones to a temperature below 25 DEG C. and seeding the solution with crystallized 1:4-glucosaccharolactone. The starting solution is preferably evaporated to increase the concentration prior to refrigeration.  After removal of a first crop of crystals, the mother liquor is re-cycled for incorporation with a fresh batch of aqueous starting solution.  Specification 870,051 is referred to.
Patent GB-1417982-A (GB)
Title: Gain control circuits
IPC: H03G1/00
Filed: 1972-01-31
Abstract: 1417982 Automatic gain control BRITISH AIRCRAFT CORP Ltd 9 April 1973 [31 Jan 1972] 4496/72 Heading H4R In a gain control system using a FET as the gain controlling element in a potentiometer in the signal path the FET is included in a closed loop feedback circuit which is incorporated in the gain control loop. As shown the a.g.c. control voltage at 1, is applied to the gate of the FET through a virtual earth amplifier, the output electrode of the FET is connected to the amplifier input to provide feedback and the FET source drain current is supplied from a constant current source I 1 , so that the resistance presented by the source drain path of the FET to the signal path is proportional to the a.g.c. control voltage. As shown the a.g.c. voltage is derived via a shaping network from the output of the video amplifier to provide the appropriate control law. The virtual earth amplifier may be an emitter coupled pair Tl, T2, Fig. 3 (not shown).
Patent GB-124056-A (GB)
Title: Improved Metallic Non-skidding and Protecting Device for Pneumatic Tyres.
Inventor: GREEN JAMES HENRY
IPC: B60C27/20
Filed: 1918-03-15
Abstract: 124,056. Green, J. H. March 15, 1918. Tread bands, projections, and surfaces.-A tread band for pneumatic tyres consists of plates each having a hook d (or hooks) at one end to engage a slot b (or slots) at the other end of the adjacent link, the slotted end having a reduced portion a<2> to permit lateral assemblage of the links when arranged as shown in Fig. 3, the dimensions of the hooks and bars c being such as to prevent separation by relative outward movement in use. The plates may be formed with one or more longitudinal ribs f to engage recesses in the tyre, and with tread ribs a<3>, a<4>.
Patent GB-1022145-A (GB)
Title: Apparatus for pneumatically gauging the calibre of a hole in a workpiece
IPC: G01B13/10
Filed: 1963-02-05
Abstract: 1,022,145. Measuring electrically. THOMAS MERCER Ltd and D. J. WEATHERBY. Feb. 5, 1963, No.4654/63. Heading G1N. The size of a hole is measured by a pneumatic plug gauge whose back pressure is sensed electrically. As shown (Fig. 2), the apparatus comprises a constant pressure source feeding air through conduits 23, 20, 19 to an orifice 18 in an air plug gauge 17. The back pressure, indicative of the extent of obturation presented to orifice 18 by a bore 16A, displaces a brass or copper diaphragm 21 clamped round its periphery, and the movement of the diaphragm, which is indicative of the size of the bore, is sensed by an electronic probe 27 connected into a bridge circuit (not shown).
Patent GB-348544-A (GB)
Title: Telegraphic transmitter incorporating a mechanical relay
IPC: H04L15/18
Filed: 1930-02-12
Abstract: 348,544. Telegraph transmitters. CREED & CO., Ltd., CREED, F. G., and SALMON, R. D., Telegraph Works, Croydon. Feb. 12, 1930, No. 4738. [Class 40 (iii).] A telegraph transmitter has two peckers, 4, 5, alternately co-operating with two corresponding rows of perforations in a tape, the peckers being each adapted to actuate a corresponding independent detent 10, 11 controlling the clutch 19 of a mechanical relay at opposite points of its revolution, for actuating the transmitting contacts 17, 18. The peckers 4, 5 actuate the detents 10, 11 through bell levers 12, 13 and are alternately pressed against the tape and withdrawn by cams 2, 3 on the rotating shaft 1. The clutch 19 is preferably that described in Specification 344,929, [Group XXXVII].
Patent GB-124262-A (GB)
Title: Improvements in or relating to the Manufacture of Agglomerates of various Materials and their Utilization.
Inventor: ROUSE THOMAS
IPC: C22B1/16
Filed: 1918-03-18
Abstract: 124,262. Rouse, T. March 18, 1918. Arc-lamp electrodes.-In making electrodes containing " ferro-boro-silicate," described in Specification 21563/10, [Class 82 (i), Metals, Extracting &c.], the dry mixture is treated with steam to make it plastic. After moulding, the mixture may be heated for three or more hours at 600-800‹ C. From 4 to 7 per cent of agglomerant may be used. Electrodes may be made from anthracite or graphite, or from equal parts of anthracite or petroleum, coke and graphite, or from anthracite or graphite alone, 4¢-5 per cent of ferro-boro-silicate being used. The electrodes may contain metalliferous material, or may be wholly of such material which may consist of forge or hammer scale, steel sawings, filings, or turnings, metal grindings recovered from swarf, nickel, copper, brass, or aluminium turnings, &c., or zinc waste.
Patent GB-234191-A (GB)
Title: Improvements in and relating to armatures for asynchronous motors
IPC: H02K17/16
Filed: 1924-02-26
Abstract: 234,191. Shenfer, C., and English Electric Co., Ltd. Feb. 26, 1924. Alternating-current induction machines; conductors.-The secondary element of an asynchronous machine comprises a solid body of iron or steel on each end of which is mounted in good surface conductivity therewith a disc or ring of appreciably greater conductivity than the body portion, for example, copper or bronze, the cylindrical surface of the body portion being continuous or slit longitudinally to permit longitudinal conductivity for the working currents and increased reluctance to stray flux. The conductivity of the paths is reduced by inserting metal strips in the slots and connecting them to the end members which may be welded or brazed to the body portion, or the surfaces may be machined and coated with copper or tin. In two arrangements, Fig. 1, the end rings may be screw-threaded as at 2, or shrunk on to the solid body as at 3, deep narrow slits 6 being provided. In another arrangement, Fig. 4, discs 4 are tightly bolted to the solid body, the, deep slits extending from disc to disc. Specification 10933/89 is referred to.
Patent GB-817512-A (GB)
Title: Improvements relating to dynamo-electric machines
Inventor: MORGAN JOHN WILLIAM HAROLD
IPC: H02K3/24
Filed: 1955-02-18
Abstract: 817,512. Cooling dynamo-electric machines. ENGLISH ELECTRIC CO. Ltd. Feb. 10, 1956 [Feb. 18, 1955], No. 4912/55. Class 35. In a totally-enclosed machine, gaseous coolant is circulated in closed circuits including a cooler on the output side of the fan and a second cooler for the coolant after it has traversed the machine from end to end by stator and rotor ducts. Gas leaving the gear-driven blower 38 passes in parallel over two units of the first cooling stage (not shown) in the right-hand half of the machine and part of it reaches the space 46 from which part of it flows axially through ducts 28 in the stator core and conductor slots to the space 57 where it is joined by other gas streams and passes in parallel to the two circumferentially spaced units 15 (one shown) of the second cooler stage before returning to the blower via holes 60 in the core-supporting rings 61 and pipes 59. Another part of the gas from space 46 leaks under the baffle 37 and flows along the " air gap " to space 57, the remainder of the gas from space 46 passing into the interior of the rotor end winding shroud 31 at the right-hand end of the machine where there is a further split up, some traversing ducts in the slot portions of the conductors until it escapes into the " air gap " by passages 56, and some flowing around the end winding overhangs to reach outlets 34 at the right-hand end of the rotor periphery. The path taken by the gas within the shroud 31 is similar to that shown in Fig. 3 for the left-hand end of the rotor, a partition 52 being provided between the inlets 50, 51 for the end windings and slot portions respectively, members 54 being ducted spacers, the gas in the slot portions of the rotor conductors passing into the " air gap " near the rotor centre. The part of the gas leaving the first stage cooler units which does not pass to the right-hand end of the machine (space 46) traverses pipes 47 leading to space 48 and passes to the rotor inlets 49 at the left-hand end of the rotor then taking the paths shown in Fig. 3 and joining up with the " air gap " gas and that in space 57 to flow to the second-stage coolers. The stator conductors may be in two stacks 17a, 17b separated by insulated tubes for coolant and the slot wedges 23 can be extended to provide axial ducts 26 between the faces of the teeth and additional wedges 25. The wedges 23 can have axial ducts 76 leading at the centre of the rotor to the air gap by radial passages 77 and in that case it may join up with gas reaching the centre of the rotor from the slot portions of the rotor conductors and flow towards both ends of the rotor along the air gap, the gas flowing towards the righteventually getting back to the left-hand end of the machine as described with reference to Fig. 4 (not shown). The layout of the machine could be modified to enable the blower and the gearing linking it to the main shaft to be at the left-hand end of the machine.
Patent GB-1380806-A (GB)
Title: Heater control arrangements for cooker ovens
IPC: H05B1/02
Filed: 1972-02-02
Abstract: 1380806 Control systems for electric ovens TI DOMESTIC APPLIANCES Ltd 2 Feb 1973 [2 Feb 1972] 4944/72 Heading H2H A control arrangement for a cooking oven similar to that disclosed in Specification 1,311,476 is modified by the emission from the control device 2a of the " untimed ON " position, manually controlled cooking operation being effected by moving the device 2a to indicate an automatically timed cooking operation of a duration longer than that of the desired manually controlled operation and returning the device 2a manually to the OFF position at the end of the manually controlled operation.
Patent GB-1124620-A (GB)
Title: Inertial air cleaner
IPC: B01D45/16
Filed: 1967-02-01
Abstract: 1,124,620. Separating dust from air. FARRCO. 1 Feb., 1967 [10 Feb., 1966], No. 4990/67. Heading BIT. Air entering a shell 1 by inlet 2 is diverted outwards by a diverging core 29 and a series of nested annular baffles 11, whereby dust is concentrated in a small part of the stream which leaves the shell by annular slit 26 and outlet 28 while the main stream leaves by outlet 3. Baffles 11 are welded to axial ribs 17 which engage their slots 16 (Figs. 3, 6, not shown), ribs 17 having bases 18 which are welded to shell 1 where exposed by holes 19. The crosssections of core 29 and shell 1 vary axially so that the air velocity between core 29 and baffles 11 is constant and the velocity between baffles 11 and shell 1 decreases downstream.
Patent GB-306043-A (GB)
Title: Improvements in and relating to apparatus for and process of removing soot from gases
IPC: B01D47/06
Filed: 1929-02-14
Abstract: 306,043. British Thomson-Houston Co., Ltd., (Assignees of Dantsizen, C.). Feb. 14, 1928, [Convention date]. Washers.-Soot is removed from combustion products by contact with a cyclic current of water, which accumulates into a quiescent pool, where the soot is separated by flotation and removed, and the water is used again. Oil from a pipe 18 may be atomized by an air jet 20 intothe gas in a pipe 1. The gas rises in a chimney 2 down the walls of which flows a stream of conducting water from tangential nozzles 10,. which form one electrode for a high-potential direct current, a central rod 3 forming the other,. preferably the negative, electrode. Soot deposited on the conducting water is washed intoa tank 11 on which it floats and whence it is removed by a screw, conveyer 27. The water is withdrawn at the bottom adjacent a baffle plateextending nearly to the bottom of the tank and is re-circulated through the pipe 10<a>, about 1 per cent of water being replaced by fresh water at each cycle. Specification 306,425 is referred to.
Patent GB-291425-A (GB)
Title: Device for fastening electric bonding conductors to the rail base
IPC: B60M5/00
Filed: 1928-02-17
Abstract: 291,425. B÷mig, R. June 3, 1927, [Convention date]. Couplings; r a i l bonds.-A device for connecting a rail bond or conductor to the rail comprises a ribbed clamp a bent at each end engage with the rail foot b<1> and clamp thereto on one side a stranded or solid conductor or bond d and an intermediate jaw c, when a wedge e is driven home at the other side. The jaw c has a curved face c<1> to fit the conductor d and a recessed surface c<2> to fit the rail foot. The wedge is shaped at the back e<2> to fit the clamp a and is fluted or toothed at the front e<1>. The Specification as open to inspection under Sect. 91 (3) (a) described a double-ribbed clamp and stated that the invention was applicable to the connection of a feeder to the rail. This subject-matter does not appear in the Specification as accepted.
Patent GB-136399-A (GB)
Title: Improvements in Winding Machines for Cloth Paper and the like.
Inventor: DURRANT GEORGE
IPC: B65H19/22
Filed: 1919-03-01
Abstract: 136,399. Durrant, G. March 1 1919. Winding - machines. - Relates to machines for winding cloth, paper, &c., of the kind having two driving or winding rollers rotating in the same direction at a little distance apart from each other, the material being wound on a batch-roller to a predetermined diameter by one winding-roller, and then transferred for completion to the second winding- roller, a second batch-roller being meanwhile placed in contact with the first winding-roller to have the cut end of the material going to the first batch-roller transferred to it to form a second batch. The means for transferring a partly-wound batch from one winding-roller to the other consists of arms pivoted to the machine frame and carrying slotted batch-supporting arms, means being provided for holding the batch-roller elevated during transference, and link-and-lever mechanism for operating the main arms to transfer the batch to the second winding-roller against inclined guides and to return the parts to normal position for the next batch to be wound. As shown, the batchroller u is driven by the winding-roller d and is supported in slotted links y pivoted to main arms v, which are pivoted at w to the machine frame. As the diameter on the batch-roller u increases, the arms y rise and are held in the raised position by ratchet mechanism. When the batch attains a predetermined diameter, links 7 pivoted to the arms v are moved to the right by a hand-lever to transfer the batch to the roller e against inclined guides 12. The arms v are then returned to normal position, a second batch-roller being placed in the arms y, a knife 13 is raised, and a knife 24 lowered to sever the material. The cut end of the material is then engaged by normally slack tapes 30 passing around a fixed pulley 31 and a roller or pulleys 38 mounted in arms 37 pivoted to rocking levers 35. Upon allowing the levers 35 to rise under spring action, the rollers 38 and arms 37 are moved into the position shown in dotted lines, thereby tightening the tapes and,carrying the cut end of the material into contact with the new batch-roller. The tapes are again lowered and the knives moved into their original positions.
Patent GB-662953-A (GB)
Title: Improvements in, or relating to, electrically tripped switches
IPC: H01H73/56
Filed: 1949-02-26
Abstract: 662,953. Automatic circuit - breakers. YARWOOD, H. I., and YARWOOD, A. T. Feb. 27, 1950. [Feb. 26, 1949; May 20, 1949] Nos. 5281/49 and 13465/49. Class 38 (v). In a switch having thermal overload tripping units and an electromagnetic under-voltage tripping unit, the moving contact carrier is pivoted by arms having hooked ends engaging pivot pins, so that it may be dismantled easily. The moulded contact carrier 6 has metal arms 7 with hooked ends 8 engaging pivot pins 9 and carries moving contacts 22, which when the switch is closed by the depression of a push button 46, resiliently engage fixed contacts 23. The switch is held closed against a spring 31, by the engagement of an arm 11 carried by the contact carrier 6 with a shoulder 14 on a pivoted trip lever 15. The switch may be tripped manually by the depression of a push-button indicated at 47, which by means of a blade spring member 48 moves the lever 15 to release the arm 11. Under overload conditions, the thermal trip units 18 move a U-shaped trip bar 17 which engages an extension 19 of the lever 15 to move the trip lever 15 to release the contact carrier. The trip bar 17 is provided with a rod-like extension 45, the end of which is located beneath the movable core 41 of the under-voltage trip solenoid 3. In the event of failure of the supply, the core 41 drops under gravity and moves the extension 45 so that the trip bar 17 moves the lever 15 to trip the switch. The solenoid 3 has a fixed core 40 and the movement of the movable core 41 is limited by nuts 44 on the end of a rod 43 secured to the core 41 and extending through the core 40. The cores 40, 41 may have radial slots to reduce eddy current losses. To enable the overload setting of the switch to be adjusted, the arm 11 is slotted and is secured to the carrier 6 by a screw 13 passing through the slot. During assembly the V-spring 31 may be engaged with the carrier 6 by depressing the carrier 6 beyond its normal "closed" position so that the end 35 enters a recess 38 in the moulding. A somewhat similar spring biasses the trip lever 15 towards the arm 11. The moving contacts 22 are arranged in pockets 20 formed in the carrier 6 and their outward movement under the bias of coil springs 29 is limited by an insulating strip 30 extending across the open ends of the pockets. The contacts 22 have projections (not shown) slidably engaging channels 21 in the sides of the pockets.
Patent GB-1176793-A (GB)
Title: A Method of Applying a Bonded Skin or Covering to a Surface.
Inventor: MCNAE GORDON SPENCER
IPC: B32B38/16
Filed: 1966-02-22
Abstract: 1,176,793. Coated surfaces. G. S. McNAE 17 May, 1967 [22 Feb., 1966], No. 5391/66. Heading B2K. A method of applying a bonded skin or covering to the surface of an article, comprises cleaning and drying the surface if necessary, applying to the surface at least one coat of a liquid resinous priming composition to form an undercoat, applying a piece of fabric to the undercoated surface, applying a liquid resinous bonding composition to the exposed face of the applied piece of fabric, applying a piece of pliable adhesive sheet material to the exposed surface of the applied bonding composition, applying pressure to the exposed face of a piece of pliable adhesive sheet material so as to bring it into close contact with the bonding composition, retaining the said piece of sheet material in place until the bonding composition has become set and then peeling off the said piece of sheet material. The priming operation may be carried out at 80‹F. The fabric may be a glass fibre fabric or woven or knitted textile fabric made from natural or artificial threads, or a mixture of both, or it may be of paper. A suitable undercoat and bonding agent contains an epoxy resin. The adhesive sheet may be embossed to a pattern.
Patent GB-566072-A (GB)
Title: Improvements in or relating to liquid traps
IPC: G01N1/40
Filed: 1943-04-05
Abstract: 566,072. Separating liquids from gases. POOLE, R. April 5, 1943, No. 5396. [Class 1 (i)] A liquid trap for use in the sampling line of a gas analysis apparatus comprises a tube A plugged at C having apertures A<2>, C2 below and above the plug respectively, a baffle D surrounding the tube between the apertures and having a downwardly extending flange, and a transparent outer tube F secured between caps G mounted on the tube A. The lower end of tube A is connecteed to the sampling line and the upper end to the analysis apparatus. An annular filter E may surround the tube around the inlet apertures C2.
Patent GB-511779-A (GB)
Title: Improvements in and relating to spindles rotating at high speeds
IPC: A47J43/044
Filed: 1938-02-21
Abstract: 511,779. High-speed mixers. ENGLISH ELECTRIC CO., Ltd., and DONALDSON, C. S. Feb. 21, 1938, No. 5430. [Classes 23 and 86] [Also in Group XXIV] The spindle 8 of the motor 2 which rotates at high speed is coupled to the driven spindle 6 in such a way that the latter is free to yield to a transverse force, and to swivel to a limited extent about a point within the bearing. In the form shown in Fig. 1 a tubular mounting 1 is secured to the motor casing and its lower part has shoulders 1b to support the flange of a spherical seating cup 4. The driven spindle 6 in this case carries a milk stirrer 10 and runs in a journal bearing 5 with an outer spherical surface resting in the cup 4. The spindles 6, 8, are joined by a flexible, preferably rubber, coupling 9 embracing shouldered bushes 9a on the spindles. The bearing 5 is held in place by a spring 7, or by a plate secured to the shoulder 1b. In the modification shown in Fig. 3, the rubber sleeve 9 forms the coupling and support for the stirrer spindle 6. The end faces of the spindles 6, 8, are bored for the reception of the ball 12 which forms the swivel bearing. In another modification the tubular mounting 1 is replaced by a cover rotating with the spindle 8, and the ball 12 may rest in a recess in a cap on the spindle 6 instead in the end of the spindle. To prevent risk of lubricant running down the spindle 6, the bearing 5 may include some self-lubricating material or may be made of porous oil retaining material.
Patent GB-286221-A (GB)
Title: Asynchronous motor corrected by means of a frequency changer
IPC: H02K17/38
Filed: 1928-02-21
Abstract: 286,221. Maschinenfabrik Oerlikon. Feb. 28, 1927, [Convention date]. Alternating-current induction machines. -An asynchronous motor 3, for example, one driving a rolling- mill, is corrected for power factor by means of a frequency changer 4 excited by means of a transformer 2 connected on its primary side in series with the asynchronous machine 3 and having a compensating-winding 6, The speed-torque characteristic of the motor is thereby made to resemble that of an asynchronous motor having a substantial additional ohmic resistance in its rotor circuit. The frequency changer is on the shaft, of the machine 3, or is geared thereto. Variable resistances may be used in parallel with the secondary winding of the transformer for varying the correction and the speed characteristic. The Specification as open to inspection under Sect. 91 (3) (a) relates to asynchronous machines in general as distinguished from asynchronous motors. This subject-matter does not appear in the Specification as accepted.
Patent GB-197091-A (GB)
Title: Improvements in or relating to brakes for road vehicles
IPC: F16D65/46
Filed: 1922-02-24
Abstract: 197,091. Stewart, J. Feb. 24, 1922. Compensating for wear.-In a brake comprising a pair of shoes expanded by a cam, the adjustable pivot connection at the ends remote from the cam consists of a pair of pins 6, 7 screwed into the ends of the shoes 1, 2. The pins have cup-shaped ends 8, 9 embracing a ball 10, the ends being formed with crown teeth meshing with a gear 11 on the end of an adjusting rod 12. The arrangement may be applied to twin brakes which may be adjusted simultaneously or independently. The adjustments are effected without removing the brake drum.