baber/WOPTO huggingface dataset:
Patent GB-1357448-A (GB)
Title: Metering piston pumps
IPC: F04B9/04
Filed: 1971-06-11
Abstract: 1357448 Reciprocating pumps ISMATEC SA 11 June 1971 [13 June 1970] 27608/71 Heading F1A A pump providing a continuous and pulsationfree delivery, e.g. for chemical process and analysis, comprises at least two pump heads with pistons 33, 34 in a block 32 detachably mounted on a drive assembly 30, the delivery strokes of the pistons partially overlapping, and the pump assembly being inter-changeable with another of different displacement, flow to and from the pump heads being controlled by slide valves 48, 49. Drive cams 41, 42 act through rollers 39, 40 on the pistons. The pistons may be of glass and cylinders of P.T. F.E., or vice versa. Slide valves 48, 49 are reciprocated by cams 71, 72 and sealingly engaged by spring- loaded bodies 50, 52. In Fig.3 (not shown), oblique valve passages 63-66 are replaced by horizontal passages.
Patent GB-812576-A (GB)
Title: Improvements in or relating to glass composition
Inventor: DUNCAN JAMES EARLE
IPC: C03C3/089
Filed: 1956-09-10
Abstract: 812,576. Glass. PITTSBURGH PLATE GLASS CO. Sept. 10, 1956, No. 27628/56. Class 56. Optical glasses having refractive indices 1À54-1À62 and densities 2À6-2À75 gms/cm<SP>3</SP> are made from the following constituents (weights per cent.) :-
Patent GB-903083-A (GB)
Title: Electric control apparatus for detecting the stationary state of a movable member
Inventor: ASBURY ALLAN
IPC: H02H7/093
Filed: 1957-09-02
Abstract: 903,083. Control of D.C. motors. ENGLISH ELECTRIC CO. Ltd. Sept. 2, 1958 [Sept. 2, 1957], No. 27654/57. Class 38 (3). The stalled condition of an electric motor is indicated by means of a relay which is responsive to the sum of D.C. signals respectively, proportional to the speed and to the rate of change of speed of the motor, the relay operating when the sum reaches a value below a predetermined level. As shown, the motor 18 is supplied from generator 19 and a resistor 20 provides a signal indicating the armature current to a control winding 23a of magnetic amplifier 23. The voltage drop across the armature and resistor 20 is applied to control winding 23b which is opposed by the winding 23a so that adjustment of resistor 21 compensates for IR-drop and the two windings together exercise a control effect proportional to the motor speed. A control signal proportional to the rate of change of speed is applied to control winding 23c through a resistorcapacitor circuit 26, 27 or other reactive circuit. A compensating winding 23d ensures that operation occurs over an appropriate range of the magnetic characteristic of the amplifier core. When the sum of the signals applied to the windings 23b, 23c approaches zero, the potential drop across the output winding 23e of the amplifier increases whereby a relay 30 operates a trip circuit for braking the motor or reducing its energization. In another arrangement, the amplifier has a minimum output under normal conditions and is heavily loaded only when the motor is stalled. The output winding 23e is then connected in series with the relay-coil 30a rather than in parallel. In a further modification, the generator supplies a number of motors, the signal proportional to rate of change of speed being derived from a winding Inductively coupled to the generator fieldwinding. A single amplifier provides stalled motor protection, the motor carrying the most current being selected as the one which determines relay operation. For this purpose, a rectifier network is connected to resistors each in series with the several armatures, the potential-drop across the resistor carrying the greatest current causing a current to circulate in its associated rectifiers and through a part of the winding 23a, and being effective to bias the other rectifiers from operating in response to the individual potential drops derived from the resistors in the armature circuits of the other motors, Fig. 4 (not shown). The response of the trip relay to reduce the energization of the motor may be rendered conditional upon the operation of an additional relay which prevents a reduction of power if the motor current is below a predetermined value. Specification 903,082 is referred to.
Patent GB-968017-A (GB)
Title: Valve for breathing apparatus
IPC: F16K11/044
Filed: 1963-07-12
Abstract: 968,017. Valves. H. HESSE. July 12, 1963 [July 14, 1962], No. 27658/63. Heading F2V. A gas valve for a breathing-apparatus is provided with a valve element 17, Fig. 3, adapted to be moved by gas pressure in such a way between two seats 11b, 14 that at a predetermined gas pressure it will leave its normal position on the seat 11b, moving to the position 17b, and at a predetermined higher gas pressure will move to the position 17c, closing the seat 14, and is characterized in that a magnet or magnets hold the valve element in its normal position and in the position 17b. The closure member 17 consists of a floating paramagnetic disc eccentric to an inlet port 21 and loaded by an asymmetrical field from a magnet having limbs 19, 20 of unequal length and/or thickness. Alternatively, the ends of the limbs may be deformed or a single, eccentrically-disposed magnet may be used. The port 21 may be connected through a breathing bag, a rate of flowmeter and a pressure gauge to a medical gas cylinder and the port 10 to a breathing mask. With the gas cylinder adjusted for normal flow pressure the closure member occupies the position 17b and the patient receives a mixture of gas from the cylinder and air from a port 7. When the patient breathes out the closure member temporarily closes the seat 11b while compression of the breathing bag moves the closure member to the position 17c so that the patient receives the medical gas alone until the surge of pressure caused by compression of the bag has ceased. Fig. 4 shows an alternative construction for use in a poisoned atmosphere, a check valve 133 being provided and the closure member 117 being concentric to the inlet port 111. The magnet 123 has an air gap to provide an asymmetric field.
Patent GB-408271-A (GB)
Title: Improvements in or relating to permeability tuning for radio apparatus
IPC: H03J3/28
Filed: 1932-10-05
Abstract: 408,271. Inductances; adjusting wireless apparatus. WYBORN, E. J., 5, Glencarse, Chalkwell Avenue, Westcliff-on-Sea, MARTIN, A. W., 1, Thames Close, Leigh-on- Sea, and COLE, Ltd., E. K., Priory Crescent, Southend-on-Sea. Oct. 5, 1932, No. 27675. [Class 37.] A ganged permeability tuning inductance for a superheterodyne radio receiver has a core of modified shape, preferably tapered, for the local oscillator stage in relation to the core or cores for the preselector stage. Cores for different wavelength ranges may comprise units 3 co-operating with medium and long wave coils 7<a>, 7<b>. The coils may be mounted coaxially or concentrically on single or double formers. The ganged cores are carried on a spindle and are adjusted by a screwthread engagement with the operating-knob, the spindle being formed with a toothed rack engaging the indicator. Specifications 373,244, and 392,158, [Group XL], are referred to.
Patent GB-780432-A (GB)
Title: Improvements in means for indicating the apparent consumption in alternating currentcircuits
Inventor: ANGOLD HERBERT EDWARD
IPC: G01R11/48
Filed: 1954-09-24
Abstract: 780,432. Indicating-apparatus. UNITED GAS INDUSTRIES, Ltd. Sept. 22, 1955 [Sept. 24, 1954], No. 27677/54. Class 106 (4). [Also in Group XXXVI] The apparatus is a modification of that described in Specification 224,512, [Class 106 (iv)], for indicating apparent consumption of alternating current by mixing the drives from a watt hour meter and wattless consumption meter in several differential gear mechanisms in different proportions for several ranges of phase angle and driving an output shaft through slipping clutches thereon by the planet carrier which happens to be the fastest for the time being, whereby the shaft is driven at almost constant speed for a given power factor. The modification comprises the transfer of the slipping clutches 18 from the output shaft to the shafts 14, 15, 25, 28, 29 to drive respectively equal gear-wheels 16, 17, 24, 26, 27, the fastest driving the whole train. The shafts 14, 15 are driven by the watt hour and wattless meters respectively and the shafts 25, 28, 29 by the planet carriers as before while the shaft 51, driven from the gear train, drives the apparent consumption indicator.
Patent GB-323491-A (GB)
Title: Improvements in or relating to switch-gear for controlling electric house-lighting plant and similar electrical installations
IPC: H02J7/34
Filed: 1928-09-27
Abstract: 323,491. Dickson, G. T. S., and Crabtree, J. A. Sept. 27, 1928. Systems for supplying consuming devices; starting prime movers. - House lighting and similar plant employing a dynamo and battery has switchgear operated by a single handle and adapted to establish three different circuit condition, viz. : a " normal " condition, the load being connected to the battery and the dynamo idle, a " battery-charging " condition with the dynamo in circuit with the whole battery and the load in parallel with part of the battery cells and an " emergency " condition with the dynamo supplying the load direct. The switching means also permits the battery to be used to start the engine with the dynamo as motor. The invention comprises an electromagnetic locking device by which the dynamo voltage or the charging current maintains in engagement contacts connecting the whole battery to the dynamo and part of the battery to the load. A shaft S fast to a handle S<1> carries metal blades P<3>, P<5> electrically connected together and a blade P<4>; these blades co-operate respectively with fixed contacts C, D, contact E, and contacts A, B. A shaft T carries contact blades P<1>, P<2> co-operating respectively with fixed contacts J, K and contacts F, G, H. The shafts are biassed by springs to the " normal" position shown and are interconnected by a lost-motion coupling such that they may both be turned to the " starting " position with contact P<1> connecting contacts J, K, contact P<2> connecting contacts F, G, contact P<3> connecting contacts 0, D and contact P<4> connecting contacts A, B. In this position the automatic lock becomes operative to maintain the contacts P<1>, P<2>, in the position described whilst the contacts P<3>, P<4>, P<5> are moved upon release of the handle S<1> to their normal position in which only P<3> connects contacts C, D. The lock consists of a pawl D' which is retained in engagement with a shoulder T<4> on the shaft T by a magnet D<5> in series with the dynamo field as shown in Fig. 6, or in series with the battery at X in Fig.6. The " charging " position thus established is maintained so long as the dynamo is running or charging current is flowing. The shaft T is unlocked by stopping the dynamo or by the action of the automatic cut-out G<3> which may short-circuit the coil D<5>. When the shaft T is unlocked it returns to normal and the " emergency " connections may be set up by a reverse movement of the handle S<1> whereupon both shafts move to cause contact P<2> to connect contacts F, H and contact P' to connect contacts C, E. The connections L, M are omitted when the prime mover is handstarted, the series field then being used only in the " emergency " condition.
Patent GB-173326-A (GB)
Title: Improvements in folding bags or boxes
IPC: B65D5/36
Filed: 1920-09-29
Abstract: 173,326. Filmer, R. H. Sept. 29, 1920. Folding boxes; boxes wade from special blanks. -A collapsable box &c. of the kind in which the ends fold inwards or outwards on the centre line and the bottom folds downwards on the centre line, is provided with internal flaps a', Figs. 1 and 3, arranged to interlock with the ends of the box and thus hold the box positively in its distended condition. The edges of the blank from which the box is formed are provided with narrow flaps b<2> so arranged that, when the blank is doubled over about its centre crease a<2> and stitched at the sides, a flap b<2> projects inside the box at each end. These flaps are formed with slits b<3> or indentations b<4> adapted to be engaged by slits or indentations a<4> in the internal flaps a<1>. The slits or indentations in the end flaps b<2> may be replaced by slits &c. in the body of the end walls. The top of the box may be closed in the manner shown in Fig. 5, or by omitting the creases h, Fig. 1, the upper edges of the box may be caused to assume a curved form. Specification 13684/11 is referred to.
Patent GB-458202-A (GB)
Title: Improved method of and means for producing artificial fogs
IPC: F41H9/06
Filed: 1935-10-08
Abstract: 458,202. Spraying-apparatus. WESSTROM, N., 6, Tysta Gatan, and LUNDIN, G., 8, Karlsviksgatan, both in Stockholm. Oct. 8, 1935, No. 27713. Convention date, Oct. 10, 1934. [Class 69 (iii)] [See also Group I] Artificial fog for hiding vessels, buildings, &c. is produced by spraying into the air oleum (fuming vitriol) or other liquid capable of producing a durable fog by chemical reaction, the spraying being performed by means of apparatus in which the liquid is conveyed from a container to a pump which forces it, out of contact with air or gases, to a pulverizing nozzle. A pipe 2 and conduit 5 connect the barrel or other vented container 1 to the suction side of a pressure pump 7, the pressure side of which is connected to a long upwardly-directed pipe 9 provided with one or more interchangeable spray nozzles 10. A pipe connecting the suction and pressure sides of the pump is fitted with a safety valve. The pump 7 is driven from a source of power such as an electromotor 8, the rotary velocity of which is adjustable within wide limits so as to vary the pressure according to the desired extent of the fog. In a modification the liquid may flow by gravity into the pump. The apparatus may be mounted on motor vehicles, tram-cars, &c. and driven by gearing.
Patent GB-154430-A (GB)
Title: Improvements in buckles or clips
IPC: A41F11/12
Filed: 1919-11-10
Abstract: 154,430. Walker, Ltd., T., and Wood, H. H. Nov. 10, 1919. Clips, lever. - In a buckle or clip for braces, suspenders, and the like, of the lever type, in which one end of the webbing 9 is attached to the backplate 5 of the clip by prongs 6 struck up out of said plate, integral ears 8 are provided at the sides of the back-plate, which are adapted to be bent over the edges of the webbing in order further to secure the same. The prongs 6 are formed with inturned ends 7, which, when the former are forced down on to the webbing, bite into the material, the prongs forcing the material into the slots in the plate 5 formed by the striking of theprongs.
Patent GB-1042929-A (GB)
Title: Nuclear, reactor, particularly for experimenting with fast neutrons
IPC: G21C1/02
Filed: 1963-07-12
Abstract: 1,042,929. Nuclear reactors. GESELLSCHAFT FUR KERNFORSCHUNG. July 12, 1963 [July 13, 1962], No. 27824/63. Heading G6C. A nuclear reactor comprises an annular thermal core 1, an annular inner graphite reflector 2, and a fast reactor core 4 inside the inner reflector. A semi-permeable layer 3, for example of natural uranium, may be arranged between the core 4 and the reflector 2. The thermal core 1 may be surrounded by a graphite reflector (not shown) and may be moderated by water maintained at a temperature of 60-90 C., preferably 85 C., by circulation at a rate of about 20 times per hour. The reactor cores are preferably arranged so that where S4 and S1 are the fission rates (number of fissions per second per unit volume) of the fast and thermal cores respectively and W4 and W1 are the heat contents per unit volume up to the melting points of the fast and thermal cores respectively. The two cores are each subvertical on their own, and during a power excursion the inherent shut-off properties of the thermal core come into action before temperatures in the fast core get too high. The reactor is suitable for experiments with fast neutrons.
Patent GB-177555-A (GB)
Title: Improvements in and applicable to twist lace machines
IPC: D04C5/04
Filed: 1920-10-01
Abstract: 177,555. Coombes, W., and Pare, F. W. Oct. 1, 1920. Lace machines. -Relates to means for introducing weft threads between the warp and bobbin threads in twist lace machines, at any desired phase of motion. One or more wefts 2 are carried by each pivoted weft-carrier 1, which is normally retained in vertical position by a spring 3 but can be deflected to an horizontal position during its traverse to pass under the carriages 4. The carriers 1 are pivoted to brackets 5 which are mounted on horizontal rods 6, 7 and are traversed thereon by pull-wires 7<a>. The carriers 1 in their traverse pass below angle-bars 10 which deflect them to the horizontal position, the carriers being inclined previous to meeting the bars by spring catches 13 pivoted at 12a to swinging arms 11 carried by the facing-bar 16. A carrier 1 after leaving the bar 10 rotates upwardly under the pull of the spring 3 and strikes a buffer 15 while a projecting pin 17 engages the catch 13. The weft is thus lifted up high enough to be engaged by the ordinary points. On the return movement the arm 11 is drawn downwards and so deflects the carrier 1 which engages the bar 10 without shock and is simultaneously disengaged from the catch 13. The portions of the wefts 2 laid at the beginning of each traverse may be retained below the carriages 4 by means of members 19 which slide in the combs 20 and are engaged by the action of catch bars 21 on nibs 22. The members 19 are not engaged by the catch bar on the opposite side and slide by gravity or under the influence of springs when free from the catch bar into a position bridging the space between the comb bars, the movement being limited by stops 24. In a modified form, two nibs are provided and the retaining-member is actuated and travels along with the carriages. A cranked wire 27 prevents the weft from being drawn towards the combs by friction with the retaining-member 19. In a modified form the weft-carrier 29 consists of two plates 29<a>, 29b riveted together and is not pivoted. The lower end of the plate 29a projects through a slit in a tube 30 and is fixed to a corepiece 33 which is drawn along the tube by the pull of a wire 35. The plate 29b is offset at the upper end to clear the tube 30 and the lower end projects into a second split tube. The wefts 2, after being laid, are lifted up by two rods 43 which are reciprocated vertically by an eccentric &c. The upper end of each rod is forked at 43<a> the two branches being connected by a crosspiece 43b which engages the bight of weft.
Patent GB-1471756-A (GB)
Title: Rotary transformer
IPC: H01F38/18
Filed: 1974-06-24
Abstract: 1471756 Transformers TOKYO SHIBAURA ELECTRIC CO Ltd 24 June 1974 27856/74 Heading HIT A rotary transformer comprises; a rotor 12 of insulated laminations 11 assembled in blocks 13 which are secured to shaft 10 by support plates 17 engaging an annular groove in the laminations at each end of the rotor and having apertures through which the shaft passes, an adhesive insulating tape layer 18 and coil 21 disposed in a peripheral channel formed from recesses in the laminations, and a stator core 25 carrying coil 32. The stator core is similarly formed of laminations and is secured to housing 29. The rotor coil 21 is secured by insulating band 22 and spacers 23. Laminations of three different breadths 11a, 11b, 11c are grouped to form pairs of blocks 13a, 13b, 13c respectively, see Fig. 3, using a bonding agent between laminations and the blocks are assembled on the shaft 10 with wedges 20 leaving air spaces 15, 16. The wedges 30 are shorter than the rotor core. A cooling fan 34 is situated at one end of the rotary shaft and a ball-bearing 35 at the other end.  In an alternative embodiment (Figs. 4 and 5, not shown) rotor and stator cores are formed from a plurality of U-shaped insulated laminations (36) all of the same size bonded together around the rotary shaft 10. Support plates 17 are secured to the rotor 12 and shaft 10 by use of a bonding agent or by welding. Alternative embodiments of support plate and rotor are described (Figs. 6 and 7, not shown) and to simplify assembly the rotor core 12 may be welded concentrically to an iron sleeve (36, Fig. 8, not shown) and the support plates (17) welded to the ends of the iron sleeve and to the core, the sleeve complete with core and support plates then being fitted to the shaft (10).
Patent GB-533172-A (GB)
Title: Improvements in photographic cameras
IPC: G03B27/465
Filed: 1939-10-13
Abstract: 533,172. Photographic roll-film cameras. WESTMINSTER PHOTOGRAPHIC EXCHANGE, Ltd., and HARVEY, R. W. Oct. 13, 1939, No. 27861. [Class 98 (i)] An operating device for photographic cameras comprises a floating lever connected at two spaced points to means for operating the shutter and for releasing film-feeding means, the lever being held against a pair of stops by a spring and connected to an operating link which causes it to pivot about one stop to operate the shutter, until arrested by a third stop, about which third stop it then turns to release the film-feeding means. In the form shown, a floating lever 8 pivoted at 7 on a spring-urged lever 4 is connected at one end to a shutter-operating link 22 and at the other to a slide 18 having an upstanding finger 19 which engages a pin on an arm 2 controlling the film feeding means. The lever 8 is operated by a pivoted member 12 having an eye at one end releasably engaging a pin on a bell-crank lever 14 connected to a lever 15 operated by a press-button ; alternatively a Bowden wire may be connected to the member 12. The lever 8, which is normally held against stops 10, 11, first pivots about the stop 10, the lower end moving the shutteroperating link until it contacts with a stop 23 ; the upper end of the lever then moves the slide 18 which operates the arm 2 to release the film feed mechanism. To obtain a continuous feed of film by the spring driving means a rod 25 is operated by a press-button 26 to displace the crank-arm 2 beyond the position to which it is moved by the finger 19.
Patent GB-1515532-A (GB)
Title: Earth boring tool with inserts
IPC: E21B10/56
Filed: 1975-07-02
Abstract: 1515532 Boring earth &c. HUGHES TOOL CO 2 July 1975 [3 July 1974] 27903/75 Heading E1F [Also in Division B3] In an earth boring tool e.g. a rotary percussion drill bit or a roller bit (Fig. 3), a sintered tungsten carbide insert 17 (or 36 in Fig. 3) has a surface 25 interferingly secured to the wall of a retaining hole, the surface having been finished by abrading the insert with abrasive particles having a hardness greater than 9.0 on the Mohr scale. Preferably the inserts are initially ground prior to slurry tumbling in a mixture of 100 to 325 mesh boron carbide particles and water, but other abrasive particles might be used e.g. beryllium carbide, titanium carbide, silicon carbide, aluminium boride, cast tungsten carbide, ditungsten carbide, boron carbide, boron or diamond. The inserts then have an asperity less than that formed by grinding with a diamond wheel but greater than that of the matt finish obtained by abrading with alumina, and the surface produced on the insert is such that in any lineal increment of at least 0.010 inch, there are at least 3 asperities which from peak to trough are at least 0.001 inch long and at least 0.00005 inch deep when measured with a stylus point of radius 0.0005 inch.
Patent GB-713938-A (GB)
Title: Overhead camshaft drive for internal combustion engines
IPC: F01L1/10
Filed: 1952-11-06
Abstract: 713,938. Balancing engines. NSU WERKE AKT.-GES. Nov. 6, 1952 [Nov. 29, 1951], No. 27955/52. Class 122(3) [Also in Group XXVII] The crank gear for an overhead camshaft 1 of an internal combustion engine (see Group XXVII) is balanced by providing a balance weight 10 on the camshaft and removing a corresponding mass from one of the wheels of the driving gearing 8 for the crank gear.