baber/WOPTO huggingface dataset:
Patent GB-215372-A (GB)
Title: Improvements in circuit arrangements employing vacuum tubes
IPC: H02M7/44
Filed: 1924-05-01
Abstract: 215,372. British Thomson-Houston Co., Ltd., (Assignees of Prince, D. C.). May 4, 1923, [Convention date. Addition to 206,837. Thermionic generators. - The arrangement for generating polyphase alternating or oscillatory current described in the parent Specification is provided with modified means for securing a lead of the grid potential relatively to the potential of the corresponding plate secondary winding; and for automatically varying the angle of this lead in accordance with the load supplied. The valve circuits are the same as those shown in Fig. 3 of the parent Specification, the primary coils 4, 5, 6 of a three-phase transformer being connected in the plate circuits of three valves, and the secondary coils 18, 19, 20 of a second transformer being connected in the corresponding grid circuits. The secondary coils 9, 10, 11 of the plate transformer are connected by means of tappings 32 to series inductances 29, 30, 31 in the output leads 12, 13, 14 and the primary coils 15, 16, 17 are connected to other tappings 33 on the same inductances, as shown in Fig. 2. By this means an adjustable phase difference is obtained between the grid potentials and the potential of the corresponding plate circuit secondary, and the amount of this phase difference varies automatically with the load. Alternatively as shown in Fig. 3, the leads from the grid transformer primary 15, 16, 17 may each include a pair of coils coupled to two of the coils 29, 30, 31, and may be taken to tappings on the secondary coils 9, 10, 11 of the plate transformer. In a further modification, shown in Fig. 4, separate primary coils 43, 44, 45 are provided for the grid transformer, and each coil is connected in series with an inductance 46, 47, 48 between one of the output leads 12, 13, 14 and a tapping 26, 27, 28 on one of the adjacent coils 9, 10, 11.
Patent GB-1019746-A (GB)
Title: Continuous-casting mold
IPC: B22D11/05
Filed: 1964-03-13
Abstract: 1,019,746. Continuous casting-machines. UNITED STATES STEEL CORPORATION. March 13, 1964 [April 12, 1963], No. 10803/64. Heading B3F. In a water-cooled continuous mould 10 each side wall comprises an inner plate 18 of e.g. copper supported by a backing structure 13 on staybolts 19 distributed over the outer face of each backing structure and so arranged, Fig. 5 (not shown), as to permit movement of said inner plate relative to the backing structure, and each end wall 30 is disposed between the inner plates 18 of the side walls and determines their spacing. Spring- loaded bolts 31 yieldingly force the side walls towards each other, and bushings 32 through which these bolts pass are connected to the flanges 15 of the end wall backing structures 13 through horizontal slots which allow the end walls to be tilted slightly to afford a slight downward taper and also variation in the spacing between the end walls. The end wall structures are slidably mounted on pins 36. Thermal-expansion stresses in the plates 18 are further reduced by horizontal slots 18b, Fig. 1 (not shown).
Patent GB-532582-A (GB)
Title: Arrangements for indicating the geographical position of a faulty submarine cable repeater
IPC: H04B17/40
Filed: 1939-07-21
Abstract: 532,582. Repeaters. STANDARD TELEPHONES & CABLES, Ltd., JACOBSEN, B. B., ROCHE, A. H., and TERRY, V. J. July 21, 1939, No. 10806/40. Divided out of 532,523. [Class 40 (iv)] In a submarine repeater the occurrence of a fault causes or enables electric currents or sonnd waves to be transmitted through the surrounding water to enable the location of the faulty repeater to be ascertained. As shown the fault causes the operation of relay L, e.g. as described in Specification 532,523, and this connects up the primary of a transformer the secondary of which is connected to spaced insulated electrodes E on the casing of the main cable or of a spur cable. Alternatively the circuit may be merely prepared by relay L and completed at the will of the distant attendant. Two or more pairs of electrodes differently spaced and fed with different, e.g. harmonically related, frequencies may be used to give a coarse and fine indication. Alternatively power may be connected to a generator of audible or supersonic sound waves attached to the main cable or to a spur cable or to the repeater itself.
Patent GB-836006-A (GB)
Title: Manufacture of improved polyethylene
IPC: C08F6/02
Filed: 1956-04-09
Abstract: Polyethylene produced by a low pressure process using a Ziegler catalyst is purified by treatment with an alkaline material advantageously in aqueous or alcohol solution and preferably in conjunction with a wetting or emulsifying agent.  The polyethylene may subsequently be separated and then washed with acetone or with water preferably containing an emulsifying agent.  The treatment may be applied to the polymer itself or to the suspension obtained by the polymerization process.  Alkaline materials specified are sodium and potassium hydroxides, ammonia and diethanolamine.  Improved films and mouldings are obtained. Specifications 799,392, 799,823, 801,031, 801,554, 804,072, 804,304 and 813,221 are referred to.
Patent GB-272654-A (GB)
Title: Improvements in and relating to boxes or containers for powder puffs or articles requiring dust proof packing
IPC: A45D33/00
Filed: 1926-04-24
Abstract: 272,654. Mousley, F. April 24, 1926. Tubular boxes; contents, viewing; fittings, internal.-A box or container, for packing powder-puffs &c. in a dust-proof manner, comprises two parts each with a transparent end protected by a lid, the two parts being seated together after the puff &c. has been inserted therein. As shown the box is formed of two tubular bands a covered at the ends b with transparent material and joined to. gether at the other ends by an exterior band d; the band d may be inserted within the bands a or may be dispensed with, one band a being then fitted into the other. A lid e fits over each transparent end b.
Patent GB-376749-A (GB)
Title: Improvements in or relating to presses
IPC: B30B1/32
Filed: 1931-04-13
Abstract: 376,749. Mechanical presses. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, RICHARDSON, H. T., 101, Glendower Avenue, and JACKSON, S. D., 40, Glendower Avenue, Coventry. April 13, 1931, No. 10860. [Class 87 (ii).] Presses for moulding synthetic resins or other substances, of the kind fitted with multiple platens in alignment to treat a number of articles simultaneously, are provided with means damping the movement of the intermediate platens. In the illustrated form three platens 2, 4, 5 are used, of which 2 is fixed and 4 is moved by a hydraulic ram, the latter being advanced until the article thereon contacts with the platen 5, after which both platens move together until both articles are compressed by the fixed platen 2. The movement of platen 5 is controlled by a dashpot, to the cylinder 8 of which it is connected by members 9, 10. The members 10 are prolonged below the platen 5 to pass through slots in the platen 4 so that on the return stroke the platen 4 engages the nuts 14 and starts the retracting movement of the platen 5 positively. The fixed piston of the dashpot comprises two perforated plates which can be adjusted angularly so that the perforations are more or less in register to vary the resistance to the passage of the oil or the like.
Patent GB-1206792-A (GB)
Title: Device for cleaning electric razor components
IPC: A47L5/14
Filed: 1967-09-26
Abstract: 1,206,792. Spray producers. SPERRY RAND CORP. 26 Sept., 1967 [22 Nov., 1966], No. 10910/70. Divided out of 1206791. Heading B2F. [Also in Division F1] A hand-held container 1, Fig. 2, for use in cleaning electric razor head components by jets of gas, contains under superatmospheric pressure a volatile liquid fungicide admixture with a volatile carrier liquid, and has a finger operable valve 7 with an inlet in the gas space above the surface of the liquid mixture 3 and an outlet connected to a narrow tube 16 projecting laterally from the container and discharging a concentrated jet of gas when the valve is opened. The valve 7 is of known kind and opened by depressing a button 14 against the action of a spring 11 (Fig. 3, not shown) to displace a port in the hollow valve stem from an annular rubber sealing member. The tube 16 is force fitted into or integral with the push button 14. A removable cap 17 protects the parts 14, 16 when the container is not in use. In an alternative embodiment the valve 31, Fig. 4 is actuated by depressing a push button 56 formed together with the gas discharge tube 32 as integral parts of a plastics cover 57 mounted over the sheet metal top 43 of the container 37. When the valve 31 is open the gas entering the valve from 'the space above the liquid mixture 36 aspirates a quantity of the mixture through a tube 33 thereby ensuring that the discharged gas has a desired proportion of less volatile constituent.
Patent GB-372517-A (GB)
Title: Improvements in the construction and mounting of trolley wheels, incorporating internal ball or roller bearings
IPC: F16C35/067
Filed: 1931-12-14
Abstract: 372,517. Ball and roller bearings. COOPER, A., 72, William Street, Sheffield. Dec. 14, 1931, No. 10945. [Class 12 (i).] A trolley wheel is mounted on a shaft S by a ball or roller bearing B the outer race ring of which is clamped by end plates C which are secured to the pulley W by screws T passing through the wheel. The shaft S is in two parts which screw together and clamp the inner race ring of the bearing therebetween. Rings F, H, of pressphan or the like insulate the wheel from the bearing.
Patent GB-777642-A (GB)
Title: Motor driven lawn mower
IPC: A01D34/47
Filed: 1955-04-18
Abstract: 777,642. Lawn-mowers. SUNBEAM CORPORATION. April 18, 1955 [Oct. 22, 1954], No. 11149/55. Class 6(2). [Also in Group XXIV] In a motor lawnmower wherein the engine is provided with both a cam-shaft and a crankshaft, the cutter is driven from one of these shafts and the ground wheels from the other. The machine is mounted on two rubber-tyred, ground-wheels 26 driven frictionally by knurled rollers 148 on a shaft 146 which is driven by a belt-drive 151 from an extension 100 of the engine crankshaft. The drive includes a variable diameter belt-pulley 152 (see Group XXIV). The drive is interruptable, at will, by raising of the handles 127, 128 about pivots 137 thereby slackening the belt 151 and moving the rollers away from the tyres 30. The main frame of the mower consists of an open rectangle 21 carrying pivots 41 for the cutter reel 36 which is driven by a chain 45 from a shaft 108 connected, through an overload-release clutch 107, to the cam-shaft 102 of the engine 96. The frame 21 carries pivots for brackets 70 carrying the rear roller 74, the brackets and roller being adjustable by thumbscrews 78 mounted on the brackets and bearing against abutments on the frame. The frame also carries pivots 51 for a spring-loaded ledger-blade 49, Fig. 7, which is supported by bolts 58 passing through the frame and attached to brackets 52 on the blade, the spring-loading being provided by stacks of spring-washers 60. The centre of the ledger blade 49 is supported by a spring-bracket 65 secured to a cross-shaft 25 forming part of the frame 21. The handle comprises a bifurcated upper part 128a, 128b, carrying grips 130 and a throttle-control lever 165, and a lower U-shaped part 127 carrying brackets 140 for the shaft 146, the two parts being adjustably secured together by plates 131. The limbs of the part 127 are pivoted at 137 to lugs 22b on the main frame and also carry arms 135 which are connected to the frame 21 by U-shaped springs 162 which work over-centre to retain the handle either in the " drive " or " no-drive " position.
Patent GB-752679-A (GB)
Title: Improved pile
Inventor: COURT RONALD EDWARD
IPC: E02D5/32
Filed: 1954-04-15
Abstract: 752,679. Driving piles. MOUCHEL & PARTNERS, Ltd., L. G. March 16, 1955 [April 15, 1954), No. 11182/54. Class 68(2) A pile of the kind having an internal, or external, passage terminating in an outlet near the toe so that during the driving operations water may be forced into the ground surrounding the toe to facilitate its penetration, e.g. into a sandy stratum, is characterized in that at least one further external, or internal, passage having a detachable bottom seal, is provided so that when the pile enters the sandy stratum the bottom seal can be removed to provide an additional passage to facilitate the escape of water and water-borne material. The pile comprises a reinforced concrete structure 1 having a toe 2 with a fixed metal sheath 3 which is fixed to an internal pipe 4 terminating in outlet holes 5 and providing for the introduction of water down the pile. Metal channels 6 are fixed by clamps 21, Fig. 5, to the outside of the pile, to one side of its centre line, to provide passageways 7. The latter are closed at their lower ends by metal plates 19 each of which is connected by a hooked bolt 20 to a bolt 16 which is built into the pile and passes through slots 18 in the channels 6. The bolt 16 also holds in position cover plates 15. Lifting lugs 10 are secured above outlet openings 13 at the upper ends of the channels 6, stop plates 12 being bolted to the pile at 8 to ensure that the channels travel downward with the pile. Abutments 14 are welded to the channels to facilitate the arrest of their downward movement. In operation the pile 1, channels 6, cover and sealing plates 15, 19, and stop plates 12 are assembled and held in position by bolts 8, 16, and 20, and driving is commenced until the pile reaches the stratum at which. it is desired to bring the escape channels into operation whereupon the clamps 21, the bolt 8, and stop plates 12 are removed and timbers 23, Fig. 6, are placed under the arrester abutments 14. Driving is then continued when the passageways 7 become unsealed and free to operate. When the pile driving is completed the channels 6 can be recovered by using the lifting lugs 10.
Patent GB-501315-A (GB)
Title: Improvements in and relating to exhaust mufflers
IPC: F01N1/12
Filed: 1938-04-12
Abstract: 501,315. Exhaust-silencers. BARRON, R. April 12, 1938, No. 11215. [Class 7 (³)] An exhaust-silencer comprises an enlargement 1x of the exhaust pipe 1 having exit openings 3 at its further end leading into a surrounding casing 4 giving an increased area of flow for the gases, which return through the annular space between the tubes 1x and 4, and find oxit to the atmosphere through a series of tubes 9. Vaned discs 12, 13 alternately inclined in opposite directions are provided in the tube 1x, and similar discs 23, 24 within the surrounding annular space. Also spiral strips 11 are provided in the exit tubes 9. These tubes are of different lengths.
Patent GB-1443398-A (GB)
Title: Rotary seal for a casting ladle
IPC: B22D41/26
Filed: 1974-03-13
Abstract: 1443398 Valves BROHLTAL-DEUMAG AG FUR FEURERFESTE ERZEUGNISSE 13 March 1974 [13 March 1973] 11280/74 Heading F2V [Also in Division F4] A casting ladle, having a discharge orifice at its bottom 10, 11, is provided with a rotary seal comprising a sealing plate D which is eccentrically mounted in a rotary part 5 so that, on rotation of the part 5, an opening through the plate D can be brought into and out of alignment with an opening in the ladle bottom. The rotary part 5 is mounted by means of a flange 12 at its circumference which runs on rollers 4 projecting inwardly from a holder ring 2. The ring 2 is resiliently urged towards a base plate 1 at the ladle bottom by springs 7 or by hydraulic pressure devices. Two arms 6 on the rot - ary part 5 can be connected to hydraulic actuation devices (not shown). So that the rotary part 5 can be dismounted from the ladle, the flange 12 is circumferentially divided into segments with gaps (18) therebetween, Figs. 2 and 3 (not shown), whereby the rotary part can be turned beyond its opening and closing movement to a position in which the rollers 4 can pass through the gaps. The running surfaces of the segments may slope circumferentially upwardly (as illustrated in Fig. 3, not shown) to ensure that, when the rotary member 5 is rotated to close the ladle orifice, the sealing plate D is urged upwardly against the ladle bottom.
Patent GB-108529-A (GB)
Title: Improvements relating to Dynamo Electric Machines.
Inventor: SCHROEDER GIULIO
IPC: H02K1/18
Filed: 1916-08-10
Abstract: 108.529. Schroeder, G. Aug. 10, 1916. Cores, yokes, and carcase structures.-The stator core-laminae 2 are attached to the frame 1 either by means of projections formed integrally with the laminae, Fig. 2, or by means of keys 13, Fig. 4, said projections or keys being secured in comparatively wide slots 3 in the frame by easily fusible metal, cement, concrete, or the like 11. The slots 3 may be lined with sheet metal bent or pressed into shape and secured in the frame by fusible metal, cement, &c. One or both parts of the keys 13 may be rectangular. The core may be assembled in the frame 1 for the casting operation by the use of a mandrel 5, end plates 6, and bolts 7, the mandrel being centred by means of brackets 9 which are registered to machined facings 10 on the frame 1. A gap 12, Fig. 2, between the core and the frame obviates the necessity of machining the inside periphery of the frame. The invention may be applied to rotors, the cores being fixed to the spider &c. in the above described manner.
Patent GB-182593-A (GB)
Title: An improved pantographic apparatus for tracing profiles
IPC: B43L13/10
Filed: 1921-04-19
Abstract: 182,593. Julius, G. A. April 19, 1921. Pantographic apparatus.-A device for tracing the profiles of rails &c. in order to determine wear or deformation comprises a parallel-motion linkage carried by a frame 10 adapted to be clamped to the rail &c., the frame bearing a card 11 and the linkage carrying a scriber and a pencil adapted to be moved over the profile and the card respectively. The frame has a swing back 13 for the insertion of the'card, the back being held in position by springs 14 mounted on pivots 15. The card is marked with lines which are brought into register with the edges 28 of the frame opening, and also preferably bears a diagram 67 representing the unworn section of the rail &c. The clamping-means comprise an extension 17 of the frame terminating in a heel piece 18 adapted to be set against the web 19 and to check itself against the underside of the rail at 20. The member 18 carries on an eccentric pin 21 a loose arm 22 in which can slide an arm 25 terminating in a claw 26 adapted to bear in the groove 27 in the rail. The clamp is tightened by turning the arm 23 secured to the pin 21. The linkage comprises an L-shaped arm 30 pivoted at 32, 34 to equal and parallel arms 31, 33 which are pivoted at 35, 36 to the frame. Pivoted at 34, 34<x> to the part 37 of the arm 30 are equal and parallel arms 39, 38 to which is pivoted an arm 40. Pivoted to the arm 40 are two equal bell-cranks 41, 43 which are fixed to their pivots 45, 46 to which are also secured the pencil-carrying arm 60 and the arm 48 carrying the scriber 53. The bellcranks are connected together by pivoted links 50, 51. Fig. 6 shows a modification in which the bellcranks are omitted, the pencil 70 being carried by the arm 71. The scriber consists of a T- headed member 74 at the end of an arm 75 which is connected at its upper end to the arm 71 by the pin-and-slot connection 78, 80 to permit of the necessary lost motion due to the width of the head 74. Fig. 6 also shows serrations 49 formed on the outer end of the clamping-arm 25 for use with the heads of plain rails.
Patent GB-565266-A (GB)
Title: Improvements in apparatus for producing electrical energy of stabilised frequency
IPC: H03B21/00
Filed: 1943-07-14
Abstract: 565,266. Frequency changing. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 14, 1943, No. 11454. Convention date, July 14, 1942. [Class 38 (ii)] A.C. from a standard frequency source 1 excites through phase-splitting means twophase windings 51, 55, 53, 57 which produce a rotating magnetic field in which a conductor, such as a rotor winding 5, is rotated at a relatively low speed by a motor 11 through a variable speed gear 13 and reversing gear 15, 17, 19. Thus, A.C. of controllable frequency slightly above or below the standard frequency may be supplied through a transformer 23 to load terminals 49, a balanced thermionic modulator with automatic volume control being interposed to ensure constant amplitude of output.
Patent GB-331605-A (GB)
Title: Improvements in fitting pumps into deep well piping
IPC: F04B47/00
Filed: 1929-04-15
Abstract: 331,605. Yerkes, J. A., and Lemmon, R. H. April 15, 1929. Drawings to Specification. Mountings.-The subject-matter is identical with that of Specification 331,604.
Patent GB-120532-A (GB)
Title: Improvements in or connected with the Mounting of the Spindle of Grinding Machines, Machine Tools, and other Machinery.
Inventor: ALMFELT KARL JOHAN
IPC: B23Q1/26
Filed: 1918-07-16
Abstract: 120,532. Almfelt, K. J. July 16, 1918. Ball bearings.-The spindle of a grinding-machine, machine tool, &c., is mounted in a sleeve 13 with ball bearings at each end, and one or both sets of bearings comprise two rows of balls, the outer races of which are pressed apart to take up wear by a split ring 18 contracted by a wedge 21 on an adjustable end cap 20. The inner and outer surfaces of the ring may be conical or spherical; if spherical, the bearing is self-alining. One set of bearings is movable axially to allow for expansion, either by a bush 16 loose on the spindle, or by a ring moving axially in the sleeve 13. The end caps are locked in the adjusted positions bv spring pins 40 projecting inwardly or outwardly into recesses. In a modification, the wedge 21 is separate from the cap 20 and embraces the conical exterior of the ring 18, which has a projecting bearing against a shoulder on the sleeve 13. In another form, the ring 18 is cylindrical externally and is surrounded by a split conical ring contracted by the wedge 21.
Patent GB-724594-A (GB)
Title: Improvements in or relating to holders for rotary tools
IPC: B23B31/38
Filed: 1953-04-28
Abstract: 724,594. Tapping &c. attachments. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 28, 1953 [May 1, 1952], No. 11709/53. Class 83 (3). A holder for rotary tools comprises a casing 1, an input shaft 3 for connection to a machine tool, an output shaft 8 movable axially relatively to the casing between two extreme positions in which a movable coupling element 10, supported by an axuiliary shaft 6 coupled to the output shaft, co-operates with either of two driving-wheels 4, 24 driven in opposite directions by the input shaft, the coupling being disengaged in a mid-position. The holder further comprises a spring 44 which holds the auxiliary and output shafts in a relative mid-position, and a coupling between the shafts such that, when the output shaft is overloaded, the auxiliary shaft is turned relatively to the output shaft and is displaced axially, thus disengaging the coupling element 10 from the driving wheel with which it co-operates, and locking means 61 preventing the return of the auxiliary shaft to its mid-position, the locking means co-operating with a rim 68 on the casing which disengages the locking means when the output shaft is displaced from one of its extreme positions to the other. When the tap or drill held by the shaft 8 lags behind the motion of the input shaft 6, rollers 40, 41 carried by a pin 37 on the shaft 6 ride along helical slots in the shaft 8 thus withdrawing the latch 10 from the wheel 4. The axial movement of the shaft 6 is halted by the engagement of the latch 61 with a recess therein. With the tool held in the work, the casing 1 may then be raised until the latch engages the gear 24 to reverse the direction of rotation of the tool. Jamming of the tool on the reverse movement results in the latch 10 again being moved to its neutral position but, for this movement, the helical slots are of greater pitch and a higher release force is necessary. Chucks.-The tool is gripped by jaws 70 secured together by elastic means 71 and closed by a screwed cap 72. The shank of the tool is positioned and gripped by blocks 75 on a screwed member 76.