baber/WOPTO huggingface dataset:
Patent GB-1044322-A (GB)
Title: Improvements in and relating to electrical circuits
IPC: H02M7/537
Filed: 1963-06-28
Abstract: 1,044,322. Transistor switching circuits. UNITED AIRCRAFT CORPORATION. June 28, 1963 [Oct. 26, 1962], No. 25801/63. Heading H3T. [Also in Division H2] In a driven transistor inverter whereof the power output stage comprises two push-pullconnected transistors which are rendered alternately conducting with periods between the periods of conduction in which both transistors are non-conducting, the output currents from said transistors being supplied to the primary winding of a transformer, a further transistor is rendered conducting during said periods in which the first-mentioned transistors are both non-conducting and is so connected to the transformer that back e.m.f.'s generated in the transformer when both first-mentioned transistors are switched off are clamped by the third transistor, so that the collector voltages of the first mentioned transistors do not rise above that of the supply. The push-pull switching waveforms, shown at the left-hand side of Fig. 2 and derived from a controlling oscillator by means of a bi-stable circuit followed by widthmodulating means which controls the output voltage amplitude of the inverter, Fig. 1 (not shown), renders transistors 22 and 24 alternately conducting the periods of conduction being spaced by intervals in which neither conducts, and the base voltage of transistor 34 rising during these intervals to switch transistor 34 on. Waveforms as shown are consequently derived from transformers 33, 42 and 38 and are applied respectively to power-output-stage transistors 50, 52 and 66, Fig. 3, so as to render the first two of these alternately conducting with intervening periods in which transistor 66 conducts. Back e.m.f.'s generated when both transistors 50, 52 are non-conducting and tending to cause the collector voltages of these transistors to rise are consequently by-passed through diodes 62, 64 so that the collector voltages are clamped to the supply voltage 54. This reduces peaks in the output voltage from transformer 58 so reducing the need for filtering in the output. The third transistor and diodes 62, 64 may be connected across the secondary winding of transformer 58 or alternative circuits comprising two transistors connected in series opposition across a transformer winding with a diode in series with each transistor may be used.
Patent GB-296766-A (GB)
Title: Improvements in pulsators for use in connection with milking machines
IPC: A01J5/10
Filed: 1928-09-07
Abstract: 296,766. Hansen, A. S. Sept. 7, 1927, [Convention date]. Cow-milkers.-In pulsators for use in connection with milking-machines wherein two slide pistons inter-control each other and are caused to move solely by differences in air pressure, the piston 11 causing the change of air pressure within the teat-cup groups connected to nipples 15a, 15b respectively is mounted within the second piston 7, and the ends of a cylinder 1 containing this second piston are connected by valve-controlled channels 23<a>, 23b to the teat cups or spaces within which the changes in pressure are to be obtained. In the position of the parts as shown a space 7a in the -end of the piston 7 is connected by a passage 22a and a bore 21<a> to vacuum in a groove 6, and in consequence the piston 11 will move over to the left to connect up similarly the space 7b to vacuum; the reciprocation of the inner piston is thus effected. As regards the outer piston, as shown the channel 14 in communication with the nipple 15a is open to a chamber 12a in the piston 11 and this chamber is connected by a passage 16 to vacuum in the groove 6; through the channel 23a the pressure is also reduced in the space 1a in the end of the cylinder 1. When, however, the piston 11 has moved to the left the chamber 12b is put into communication with vacuum through the passage 16, and the pressure is reduced in the space 1b and in the teat cups connected to the nipple 15b; at the same time the nipple 15a and spaces 1a, 12a are connected to the atmosphere through a bore 17a, groove 19 and slot 18. The outer piston is in this way caused to move over to the right. The apparatus may be placed directly on the milk container and suspended therewith below the udder of the cow. The pistons may be fitted with cup leathers or the like which can be replaced when worn. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a manner of fitting such cup leathers wherein the leathers, secured by screws and washers, are fixed to the end faces of the plugs 10 which are formed to extend from the ends of the piston 7 and are provided with peripheral slots for the reception of spring rings pressing outwards the bent edges of the cup leathers. This subject-matter does not appear in the Specification as accepted.
Patent GB-361975-A (GB)
Title: Improvements in or relating to trays, salvers or waiters
IPC: A47G19/04
Filed: 1930-08-29
Abstract: 361,975. Trays &c. HANCOCK, CORFIELD, & WALLER, Ltd. and WALLER, W. H., Imperial Works, Mitcham, Surrey. Aug. 29, 1930, No. 25842. [Class 128.] In a tray &c. formed with an upstanding rim and provided with a receptacle for money or change, the rim b is formed with an outwardly projecting flat top flange c and the receptacle g is adapted for accommodation in a housing formed by making transverse cuts d at the angle of the rim b and the flange c and pressing out the intervening metal e, the hinge part f being held in position by a hinge pin h which bears against the underside of the flange c. The receptacle g is formed with a depending flange g<1> which may be continuous or formed with openings which furnish legs. The ends of the hinge pin h are held by the beading c<1> of the flange c. The tray may be round, oval, rectangular, &c.
Patent GB-367869-A (GB)
Title: Improvements relating to measuring and like apparatus for electric high potential circuits
IPC: G01R1/30
Filed: 1930-08-29
Abstract: 367,869. Cut-out u t-o u t arrangements. BRITISH THOMSON HOUSTON CO., Ltd., Crown House, Aldwych, London, and MATHEWS, P., 7, Bilton Rise, Rugby. Aug. 29, 1930, No. 25883. [Class 38 (v).] In arrangements wherein relays are provided with compensating connections so that they are energized through high voltage transformers by currents proportional in phase and magnitude, a potential transformer d is connected with a portion b of the high voltage windings a of a star-delta power transformer, or to the whole or a portion of any other existing winding of the power transformer except the low voltage winding f, the whole or part winding having the smallest available leakage reactance with relation to the whole or remainder of the windings a. The secondary voltages of transformer d are combined with the voltages of the usual compensating reactors e. Specifications 224,873, [Class 37, Electricity, Measuring &c.], 311,796 and 333,516, [both in Class 38 (v), Electric switches &c.], are referred to.
Patent GB-259135-A (GB)
Abstract: 259,135. Dittmeyer, P. April 26, 1926. Travelling-band strainers.-Joint is made be-- tween an endless band strainer l, Fig. 2, and the walls of the tank in which it is situated by means of bars k, fixed between the strainer and guide roller c, and moving in a groove i formed between an L-iron h and a U-iron g along which the rollers travel. Stiffening bars m at the sides and similar bars at the centre of the band are perforated so that they may oppose as little resistance as possible to the passage of the water through the band. Fig. 3 shows the strainer arranged in serpentine form, straining taking place from the inside of the loops outward.
Patent GB-204888-A (GB)
Title: Flap support for clubs in golf bags
IPC: A63B55/00
Filed: 1922-09-26
Abstract: 204,888. Gibson, W. Sept. 26, 1922. Bags for golf clubs.-In a golf bag of the kind having a flap across the mouth provided with holes for separating the clubs, the flap is held in position by being attached to the shoulder strap of the bag. As shown in Fig. 1, the flap 6 has two slots 9 through which the shoulder strap 5 is thtreaded additional security being given by tying with a leather cord. In a modification, Fig. 4, the flap is attached to the shoulder strap by a leather lacing 12.
Patent GB-1261586-A (GB)
Title: Conveyor system
IPC: G03G15/08
Filed: 1969-05-21
Abstract: 1,261,586. Endless conveyers; screw conveyers. XEROX CORP. 21 May, 1969 [24 May, 1968 (2)], No. 26015/69. Heading B8A.  In a copying machine the particulate toner material is continuously circulated by lower and upper screw conveyers 226, 247 respectively adapted to receive the material after cascading downwards over an upwardly moving, charged, photoconductive belt 12 and to feed the material to the cascade, and an endless bucket conveyer 236 extending between and transferring the material from the lower screw conveyer 226 to the upper conveyer 247. The material from the cascade is directed, along with a sample used for comparison purposes which by-passes the belt 2, through a slot 224 into the input end of the screw conveyer 226. A hopper 300, the outlet of which is controlled by a metering gate 304, also feeds material to the input of,the screw conveyer 226 to replenish that used in the copying machine. The conveyer 226 moves the material horizontally and has its outlet end located within the lower portion of the bucket conveyer 236. The conveyer 236 comprises an endless belt with a series of integral pockets 235 on the inner surface thereof. The pockets are creased on their end walls to allow a partial collapse thereof on passage around end sprockets 253, 255 and are inwardly spaced from the edge of the belt for the formation of toothed surfaces 237 for co-operation with the drive and idler sprockets. The endless conveyer at its upper end passes around the upper screw conveyer and discharges the material through an opening 246 into the screw conveyer, which moves the material horizontally and discharges the same through a slot 273 to form the cascade. The amount of material in the cascade is controlled by variation of the gap between a pair of tapered members 287, 221.
Patent GB-1599560-A (GB)
Title: Detergency booster
IPC: C11D1/72
Filed: 1978-05-31
Abstract: DETERGENCY BOOSTER Detergency boosters comprise certain nonionic surfactants. When used at particular concentrations in conjunction with commercial laundry detergents in laundering liquors of about 70.degree.C, and higher, followed by rinsing at about 66.degree.C, or lower, the boosters herein provide improved fabric cleaning benefits. The nonionic surfactant detergency boosters herein are the ethoxylated primary aliphatic alcohols characterized by an average aliphatic chain length in the range C12-C13 and an average degree of ethoxylation of about 3.
Patent GB-412074-A (GB)
Title: Alloy
IPC: C22C21/00
Filed: 1933-09-22
Abstract: An alloy for electric light reflectors or screens consists of aluminium silver and magnesium, the proportion of aluminium being p not less than twice the silver, and the silver being greater than the magnesium.  An example consists of 60 per cent of aluminium, 25 per cent of silver and 15 per cent of magnesium.  Specification 405,125, [Group XI], is referred to.
Patent GB-438160-A (GB)
Title: Distributor for liquids and particularly those liable to congeal
IPC: G01F15/10
Filed: 1934-09-12
Abstract: 438,160. Dispensing oil &c. MULLER, J., 123, Avenue de LutÞce, La Garenne, Colombes, Seine, France. Sept. 12, 1934, No. 26232. Convention date, Sept. 12, 1933. [Class 116] [See also Group X] Apparatus for heating and distributing oil and other liquids liable to congeal, comprises a heated chamber 2 into which the oil or like containers 1 are placed and a heating chamber 7 located within the chamber 2. Further, connections are provided whereby the liquid is caused to pass through the heating chamber and thence to a storage tank 6 whence it is distributed through pipes 12 by a pump 11. In the construction shown, the container is connected by a pipe 5 to the tank 6 which contains a filter and an air separator. The liquid passes through the filter before entering the heating chamber. The latter comprises flues 8 with heat-radiating fins 9 and is heated by burners 13 fitted with pilot burners of the kind described in Specification 426,121, [Group XI].
Patent GB-1298056-A (GB)
Title: A milling machine for milling grooves in the walls of a building more particularly of a brick building
IPC: B28D1/18
Filed: 1971-04-19
Abstract: 1298056 Grooving masonry OTTO BAIER KG 19 April 1971 [3 April 1970] 26255/71 Heading B5E A machine for milling a groove in a wall 9 of a building comprises a rotatable cutter head 4 and a body 5, 6 having a drain channel 10 for milled material, the channel leading to a receptacle 15 for the material. The cutter head 4 is mounted on a threaded shaft 3 driven by a gear-box 2 and motor 1. The body is in two parts, part 5 being secured to the gear-box and part 6 being connected to part 5. The gear-box 2 and part 5 are chamfered so that the cutter head is at an angle to the wall 9 and a small gap exists between the cutter head and the parts 5, 6. The channel 10 in the parts 5, 6 widens from its entry adjacent to the cutter head to its exit and a projection 11 extends into the channel for stripping material from the cutter head. A basket 14 is secured to the exit of the channel and an impermeable bag 15 or vacuum source is secured by a split ring 21 to the parts 5, 6. A frame 16 is adjustably mounted on the parts 5, 6 and carries a forward roller 19 and a pair of rearward rollers 20, adjustment of the frame determining the depth of cut of the cutter head. A seal 17 in the frame engages the wall during cutting and a stripper 18 is carried by the frame for entering the groove cut by the cutter head. In another embodiment, the basket and bag are replaced by a rotatable container.
Patent GB-772189-A (GB)
Title: Improvements in or relating to a method for the production of artificial filaments, threads, fibres and the like
Inventor: CAMPBELL RAY
IPC: D01F4/00
Filed: 1954-09-10
Abstract: A bundle of artificial filaments or like products, obtained by the spinning of solutions of protein in aqueous media into acidified saline coagulating baths, is treated with a concentrated aqueous solution of at least one nonhardening salt at a pH up to 7 at least until a sample of the bundle, on washing and drying, gives discrete filaments; the bundle is then washed until free from salt and heated to such a temperature and for such a time that the filaments are dried and retain their fibrous form on drying after immersion for 90 minutes in an aqueous solution containing 0.1 per cent of sulphuric acid and 0.25 per cent of sodium sulphate at 97 DEG  C.  The resulting bundle may be wetted with water, stretched, e.g. 200 per cent in air, dried in the stretched condition until the filaments no longer tend to shrink, and then heated, e.g. at 160 DEG  C., until their strength is improved. Non-hardening salts which may be used include the alkali-metal salts of hydrochloric, sulphuric and phosphoric acids and sulphates of magnesium and ammonium.  Among the salts which are excluded are the known hardening salts, e.g. aluminium, chromium, zirconium and titanium salts.  The temperature of the salt solution may be 25-90 DEG  C. and the contact time may be 18 hours at 25 DEG  C., 30 minutes at 50 DEG  C., 20 minutes at 70 DEG  C., or 10 minutes at 90 DEG  C.  The filaments may be pretreated by immersion in a cold solution of a non-hardening salt, e.g. sodium sulphate, at pH 8 to 9.  The heating of the bundle may be carried out in two stages, e.g. the filaments may first be dried by heating at temperatures up to 100 DEG  C. and the dried filaments then heated at 140-220 DEG  C., and particularly at 160 DEG  C., for 2 hours.  In an example a bundle of coagulated protein filaments, formed by spinning a matured alkaline aqueous solution of peanut globulin into an acidified saline coagulating bath and stretched 400 per cent in a bath of the same composition, is passed through an aqueous bath containing 22 per cent of sodium sulphate and 2.5 per cent of sodium chloride at a pH of 8 to 9 at 25 DEG  C. so that the liquor adhering to the bundle emerging from the bath has a pH of 3 to 6.  The filaments are then heated in an aqueous bath of 22 per cent sodium sulphate at pH 4 for 10 minutes at 70 DEG  C., washed free from salts, dried at 40 DEG  C, and heated at 160 DEG  C, for 2 hours.
Patent GB-977433-A (GB)
Title: Adjustable-taper mould for continuous casting
IPC: B22D11/041
Filed: 1962-07-09
Abstract: 977,433. Continuous casting - machines. UNITED STATES STEEL CORPORATION. July 9, 1962 [July 14, 1961], No. 26313/62. Heading B3F. A continuous casting mould whose taper may be varied, comprises independently adjustable water-cooled walls 13, 14, 15, 16 which are supported at their lower ends on ball-andsockets 24, each wall having flatwise engagement with the inner surface of an adjacent wall. The walls are secured together by bolts 33 passing through elongated holes 33a so that the walls may be moved by adjusting nuts on studs 35. Separate control valves enable the coolant flow in different areas of the mould wall to be controlled.
Patent GB-500812-A (GB)
Title: Improvements in or relating to the production of fancy yarns
IPC: D01H5/36
Filed: 1937-09-29
Abstract: 500,812. Producing fancy yarns. MIDDLEMOST, H. E. Sept. 29, 1937, No. 26318. [Classes 120 (i) and 120 (iii)] In the production of fancy yarns by a method of the kind wherein flakes of material are deposited on a carded web before it is divided by the condenser tapes, a carded and condensed sliver of the flake material is fed intermittently on to the doffer, or on to an auxiliary doffer, the rotation of which acts to lay the slivers on its surface and, in conjunction with a stationary transverse blade, serves to tear off the portions of sliver from the stock. The flake slivers a b, Figs. 1 and 2, are fed from bobbins a<1>, b<1>, mounted on delivery rollers c, d and pass between guide pegs g on to the surface of an intermittently rotated card-clothed feed roller h by which they are carried down towards the surface of the doffer i<1> behind a bar or blade j. The flake slivers are laid in the correct circumferential lines on the doffer i<1> by a short endless presser apron k. When the feed ceases, continued rotation of the doffer and leather apron k act in conjunction with the blade j to tear off the fed portions from the stock which is held back by the feed roller h. The leather k is cleared by a card clothed roller m driven at a slightly higher surface speed. The guide pegs g and feed roller h are mounted in a frame r and the shaft n<1> of a toothed wheel n, which is mounted on the feed roller h, is attached thereto. The wheel n meshes with a lantern wheel o connected by gearing p with the shaft of the doffer i<1>. A pin s<1> projecting from a boss s fast on the shaft p<1> engages in the groove t<1> of a cam t driven by gearing u from the clearing roller m. As the cam t rotates the frame r is moved transversely between the feed periods and left stationary during the time the slivers are fed, the slivers thus being presented alternately over the tapes or rings of the doffer. To avoid reducing the thickness of the web and to place the flakes on the surface of the preformed web the ordinary doffer strips the web from the swift which is then transferred to an auxiliary doffer on which the flakes are deposited.
Patent GB-224532-A (GB)
Title: Improvements in or relating to apparatus for heating water
IPC: F24C13/00
Filed: 1924-11-05
Abstract: 224,532. Basin, J. Nov. 5, 1923, [Convention date]. Cooking-ranges; boilers, arrangement of; grates.-Particularly for use in kitchen ranges or with other ovens a boiler 1 enclosing the movable fire-grate 2, is connected by upper and lower tubes 3, 7 with collectors 4; 6, which have tubes 5, 8 extending between them and encircling the oven. Flow and return pipes for external circulation of hot water are connected to the upper and lower collectors respectively. A damper 11 controls the passage of hot gases which may pass round the oven among the tubes 5, 8.
Patent GB-294402-A (GB)
Title: Carburetting device for internal combustion engines
IPC: F02M1/00
Filed: 1927-10-07
Abstract: 294,402. Robinson, J. W. Oct. 7, 1927. Spray carburettors. -Separate converging nozzles 12 are provided for light and heavy fuels which may be delivered separately or simultaneously into a Venturi portion 11 of a mixing chamber 10 which is surrounded by an exhaust jacket 21 completely enclosed by a chamber 17 through which the air is admitted. The admission is controlled by a throttle 20 and a weighted valve 19 and the air, which is not so intensely heated as the mixture, passes to the Venturi by way of ports 16 and dished chamber 15. Exhaust enters the jacket 21 at 22 and leaves at 23. The mixing chamber has a throttle valve 14. Fuel is supplied to the nozzles from a float chamber 36 by way of passages controlled by valves 28, and also by valves such as 26 connected to a bellcrank lever 31 loaded by a de-centering spring 32 so that the lever, unless prevented by a stop in order to obtain a mixture of the fuels, snaps over to one side or the other to bring one or other fuel into use.
Patent GB-638679-A (GB)
Title: Improvements in or relating to fluid pressure operated jacking systems
Inventor: TREGANOWAN BERNARD ERIC
IPC: B64C25/22
Filed: 1947-10-01
Abstract: 638,679. Pneumatic single stroke apparatus. ELECTRO-HYDRAULICS, Ltd. Oct. 1, 1947, No. 26537. [Class 8(ii)] A fluid operated jacking system for actuating two moving parts e.g. aircraft wing flaps comprises a jack having two opposed pistons 13, 14 each controlling one flap and actuated in the retracted, i.e., flaps up position by continuously applied pressure of a pre-determined value and for other positions by a pressure of greater value which exerts a total force sufficient to overcome the total force exerted by the limited continuously applied pressure. In operation the pistons 13, 14 are extended by pneumatic pressure from a reservoir 1 acting through a reducing valve 3, a line 6, a union 8 of a shuttle valve 9, and a line 10 to a union 11 of the jack cylinder 12. Air on the other sides of the pistons 13, 14 is exhausted through unions 30, 31 and valves 21, 22 to an exhaust outlet 34 of a selector valve 5. Retraction is effected by maximum reservoir pressure acting through a line 4, Fig. 1, a union 35, valves 19, 20 and unions 17, 18; a piston 24 of the shuttle valve 9 being seated at 26 by air pressure at a union 28 thus cutting off the limited pressure supply to the union 11 and permitting the exhausting of the cylinder space between the pistons 13, 14 to atmosphere through the line 10 and a union 29. The piston 13 may be retracted and piston 14 extended and vice versa by suitable setting of the selector valve 5.
Patent GB-216778-A (GB)
Title: Sewing machine looper mechanism
IPC: D05B57/02
Filed: 1923-10-24
Abstract: 216,778. Fairweather, W., (Singer Manufacturing Cn.). Oct. 24, 1923. Chain-stitching.-In a looper mechanism of the type described in Specification 7903/14, a looper clamp 42 is mounted for lateral adjustment on a looper carrier 34, Fig. 3, which is in turn mounted for angular adjustment on a pin 30 on the looper carrier support 27. The support 27 is slidingly connected to the arm 25 of the split sleeve 22 of the inclined crank 16, Fig. 1, and carries a web 31 adjustably engaged by screws 32 in lugs 33 on the carrier 34. A tube 36 screwed on to the pin 30 is slidingly journaled in a bushing in the frame to control the looper movements. The crank shaft 11, Fig. 1, is detachably fixed to the under-shaft 9 and is journaled at its other end in a bearing 19 detachably mounted on the frame so that the shaft 11 may be removed without affecting the shaft 9. All the pins and shafts are made hollow to facilitate lubrication, the ends being closed by screw-caps or plates. An oil reservoir communicates with the journal of the tube 36, from which the oil passes by passages 50, 52 - - 54, Fig. 3, to the crank-journal. A second reservoir 55, Fig. 1, in the bearing 19, communicates with the bearing of the shaft 11, whence the oil passes by passages 57 - - 59 to the crank-journal.