baber/WOPTO huggingface dataset:
Patent GB-711171-A (GB)
Title: Improvements relating to the control of the mixing of liquids
Inventor: WATERS JOHN RICHARD
IPC: G05D21/02
Filed: 1952-01-02
Abstract: In an automatic control system for maintaining the pH value of a blend of alkaline water and acid water as in the parent Specification, the resultant blend is controlled at a value nearer to neutral without reducing the sensitivity of the system by not only making one sample acid as before, but by making the other sample even more alkaline.  This is effected by adding a pre-determined amount of the alkaline water.  Then the two samples have electrical resistances which are equal (or differ by a predetermined amount) when the blend is at or near neutral.ALSO:In an automatic control system for maintaining the pH value of a blend of alkaline water and acid water as in the parent Specification, the resultant blend is controlled at a value nearer to neutral without reducing the sensitivity of the system by not only making one sample acid as before, but by making the other sample even more alkaline.  This is effected by adding a predetermined amount of the alkaline water.  Then the two samples have electrical resistances which are equal (or a predetermined distance apart) when the blend is at or near neutral.
Patent GB-706060-A (GB)
Title: Improvements relating to jet propulsion engines and gas turbine and electric ignition systems therefor
IPC: F02P15/00
Filed: 1952-01-02
Abstract: 706,060. Jet propulsion plant; gas turbine plant. SMITSVONK N. V. Jan. 2, 1952 [Jan. 4, 1951], No. 174/52. Class 110 (3). [Also in Group XXVII] In a jet propulsion or gas turbine plant having a number of combustion chambers which are ignited by two or more surface discharge plugs successively connected for a short time to a condenser by a distributer, the distributer is driven by a device controlled by the current impulse for the generation of an ignition spark. As shown, a battery 1 feeds a magnetic interrupter 3, 4, 5 and the primary winding 6 of a transformer through a switch 2. The interrupter converts the direct current from the battery 1 into a pu!sating direct current, the alternating component of which is stepped up by the transformer 6, 7 to a comparatively high voltage. The secondary winding 7 is connected through rectifiers 8, 9, 10 to condensers 11, 12. The condenser 11 is connected to the rotating arm 13 of a distributer, the fixed contacts 14 of which are connected by the coil 15 of a relay to one electrode of a surface discharge plug 16. The other electrode of the plug 16 together with the condensers 11, 12, transformer windings 6, 7 and one pole of the battery 1 are connected to a neutral wire 17. The end of the rotating arm 13 is spaced some distance from the fixed contacts 14. When the switch 2 is closed the condensers 11, 12 are charged until the voltage of the condenser 11 becomes so high that the spark gap 13, 14 breaks down. The condenser 11 then discharges via the distributer, the relay coil 15 and the corresponding plug 16. A spark is generated which atomizes the fuel in the vicinity of the plug. The relay 15 then closes the switches 18, 19. The switch 18 connects the condenser 12 to the spark plug which generates a spark which ignites the fuel previously atomized. The switch 19 energizes the electromagnet 20 so that the ratchet wheel 23 and attached rotating arm 13 are advanced one step. During stepping up, the condensers 11, 12 are charged again and the process repeated at the next plug 16. In a modification the relay coils 15 are replaced by a single relay and a spark gap arranged between the condenser 11 and the rotating arm 13. In another modification, having a single relay coil between the condenser 11 and rotating arm 13, only the switch for energizing the electromagnet 20 is operated by the relay coil, the condenser 12 is then arranged to discharge through the plug 16 by a second distributer mechanically coupled to the first. The relays may be replaced by gas discharge tubes with control electrodes. Reference has been directed by the Comptroller to Specification 671,794, [Group XXVII].
Patent GB-1240951-A (GB)
Title: Improvements in domestic or other tables
Inventor: GRANT SAMUEL
IPC: A47B7/02
Filed: 1969-01-02
Abstract: 1,240,951. Tables. S. GRANT (FURNITURE) Ltd, 17 Dec., 1969 [2 Jan., 1969], No. 304/69. Heading A4H. A table C has side fillets 5a so as to slideably receive at least one subsidiary table B when the hinged legs 3a of the latter are folded flat against its top. Legs 3a of table B and the legs of table C may be replaced by side panels. The legs 3a may be retained folded by turn buttons (8, Fig. 2) or springy battens. Top D of table C is glass or plastics. (For Figure see next page.)
Patent GB-965056-A (GB)
Title: Microbiological nitrogen fixation
IPC: C12N1/26
Filed: 1963-01-03
Abstract: A fertilizer is produced by growing a micro-organism in an aqueous nutrient medium in the presence of nitrogen, oxygen, and a hydrocarbon. The micro-organism may be Bacterium nitrimethanicum, Pseudomonas nitrimethanica or Pseudomonas nitrimethanica var. citreus.  The hydrocarbon may be methane, propane, n-butane, n-hexane, n-heptane, kerosene, or ethyl benzene.  The nutrient medium may contain sodium, potassium, manganese, and iron cations; and carbonate, chloride, sulphate, phosphate, and molybdate anions.  The temperature may be 75-115 DEG  F.  The pH may be 6-8.  The hydrocarbon, nitrogen and oxygen may be in the form of a hydrocarbon/air mixture containing 15-50% of hydrocarbon.  The micro-organism may be grown in a sparger (Fig. 1, not shown) or in the soil.  The proportion of hydrocarbon to soil may be 0.01-0.1%. A liquid hydrocarbon may be sprayed on the soil.  A gaseous hydrocarbon may be fed into the soil through perforated plastic pipes.
Patent GB-1126772-A (GB)
Title: Improvements in or relating to machine tools
IPC: B30B15/00
Filed: 1966-01-05
Abstract: 1,126,772. Power presses. MINSTER MACHINE CO. 5 Jan., 1966 [17,June, 1965], No. 472/66. Heading B3H. [Also in Division B5] A press comprises a slide housing 12 which is reciprocated by a connecting-rod 20 through a screwed connection 22 and ball 24 which connection is adjustable in length to vary the shut height x of the press. A motor drive which adjusts the length of the connection comprises an air motor 58 which rotates the connection 22 through a chain drive 54; a worm 46 and a gear 42 having internal teeth meshing with crowned teeth 38 surrounding the ball 24 to screw the connection 22 in or out of the connecting- rod 20. The motor is switched on by a lever 64 and reversed by a button 65. The position of the housing 12 is indicated to an accuracy of 0À001 inch by an indicator 70 driven from the shaft 48 through a gear train 52, 55, 68. The connection-rod 20 is driven by a crank from a flywheel 18.
Patent GB-1448061-A (GB)
Title: Circular weaving-knitting machine
IPC: D04B9/16
Filed: 1974-01-04
Abstract: 1448061 Knitting machines UNIROYAL INC 4 Jan 1974 [5 Jan 1973] 00513/74 Headings D1C and D1K A circular machine includes two sets of warp yarn supplies, and two sets of weft yarn supplies each movable along a closed path so that wefts are inserted alternately by weft inserting members in a shed formed by the warp yarns. The machine comprises a stationary cylinder 16 and dial 15. The cam cylinder 17 is mounted on a ring 25 by supports 21 and driven from shaft 1 via gears 6 and a chain 4. The dial cam disc 12 is supported from a flange 11 similarly driven. Sets of upper and lower weft bobbins 30, 31 are mounted on rings 7, 8 also rotated by the shaft 1. The weft yarns are fed through insertion tubes 32, 33 so that they are presented alternately in the knitting zone. A first set of warps are stored in members 40' supported by holders 44, 44' bearing rotatable vanes 51 which allow the tubes to pass. A second set of warps are supplied from bobbins 42' through holes 46 in the ring support 18. The machine operates as follows: As the rings 7, 8 rotate weft yarn is laid in the knitting zone, and knitted by the needles. Warp 41 from holder 40 is supplied between the wefts. As the tubes 32, 33 rotate they force warp yarns 43 downwards and upwards respectively. The wefts are thus placed alternately in the sheds formed between warp 40 and the upwardly and downwardly deflected warps 43.
Patent GB-545714-A (GB)
Title: Improved electric signal injecting systems
IPC: H03C1/16
Filed: 1941-01-15
Abstract: 545,714. Combined telephony and telegraphy. REDIFFUSION, Ltd., and BRAND, P. M. Jan. 15, 1941, No. 568. [Class 40 (iv)] [Also in Group XL] An electric signalling system comprises a circuit pertaining to telephonic signals and an electronic audio-frequency oscillator associated with a valve having two control electrodes, connected respectively to the circuit and the oscillator and arranged for alternative.' operation. The Figure shows a triode-hexode valve the triode forming the oscillator and a microphone 2 being connected through an amplifier 3 to the control grid of the hexode which serves as an amplifier and feeds a radio transmitter 9. Ganged switches 11, 17 which may be relay contacts for remote control are provided so that either telephonic or telegraphic transmission may be used. Gain control may be provided by resistance 22. Specification 440,981 is referred to.
Patent GB-323644-A (GB)
Title: Alighting gear for aeroplanes
IPC: B64C25/00
Filed: 1929-01-08
Abstract: 323,644. Reid, W. T. Jan. 8, 1929. Shock-absorbers, applications of; land wheels. An aeroplane undercarriage comprises two rigid wheel-carrying stays, each hingedly attached to the fuselage 35 and extending downwardly and outwardly as shown in Fig. 1 and each being formed below its pivot with an extension towards the centre of the aircraft, the two extensions being connected by a resilient member adapted to yield under compression as the extensions move apart when the undercarriage takes the weight of the aeroplane. The stays 15 are of triangulated formation comprising two main rods 17 and 18 converging to a hub 19, and an axle 20 extending through the hub and continuing in a tie rod 21 having a forked end 22 forming journal bearings 23 and 24 for pivots 25 and 26 projecting from either side of a block 27. Struts 28 and 29 extend from the bearing 23 and 24 to the upper ends of the rods 17 and 18 to complete the triangulated frame. The blocks 27 are slidablv mounted on two rods 36 having a fixed block 38 at each end and a central stop collar 37; a pack of rubber washers is loosely mounted between each of the sliding blocks 27 and the corresponding fixed block 28.
Patent GB-552219-A (GB)
Title: Improvements in apparatus for adapting cameras for photographic copying
IPC: G03B27/32
Filed: 1942-01-19
Abstract: 552,219. Photographic copying apparatus. THIRKETTLE, A. R., and LEWIS, Ltd., R. G. Jan. 19 1942, No. 737. [Class 98 (i)] Apparatus for adapting cameras for copying, of the kind comprising a base-plate with an opening to receive the detachable camera lens and its holder, on which is slidable the second plate carrying a focusing screen and formed with an opening to receive the lens holder socket on the camera, and is provided with an axially slidable focusing sleeve, to which the lens is attached. As shown, a base-plate 5 carries a focusing- sleeve 3 slidably mounted in an aperture in a boss 4. The sleeve 3 is formed similarly to the socket on the camera which receives the lensholder, so that the latter may be secured to it, the form shown being provided with a locking- screw 1. A plate 6 is slidably mounted on the base-plate 5 by means of bevelled edges 2 engaging complemental undercut grooves on the baseplate, and carries a focusing-screen 7 and the camera body (not shown), the latter being secured by its lens-holder socket over an opening 8 in the plate. The collar 9 of the focusing-sleeve 3 has apertured bosses 10 slidable on hollow studs 17 in which are springs 18, which tend to retract the focusing-sleeve and maintain the collar 9 against the forked end 11 of a lever 12 which is pivoted at 13a. Focusing is performed by means of an adjusting-screw 20 carried by the lever 12 and engaging the base-plate, so that it adjusts the lever 12 to hold the focusing-sleeve 3 in the desired position against the action of the springs 18. After focusing, the end 14 of the lever is depressed, moving the sleeve 3 outwardly and withdrawing a pin 13 carried by it from an aperture 15 in the plate 6, which can then be moved to bring the camera into position. Release of the lever 12 allows the pin 13 to lock the plate in this position, the screw 20 ensuring the return of the sleeve 3 to the position of correct focus.
Patent GB-1244031-A (GB)
Title: Improvements relating to security fences
Inventor: BRADLEY LIONEL HOWARD
IPC: G08B13/12
Filed: 1968-01-05
Abstract: 1,244,031. Intruder alarms. BRITISH RAILWAYS BOARD. 2 April, 1969 [5 Jan., 1968], No. 778/68. Heading G4N. An intruder alarm comprises an electrified fence of insulated wire, an alarm being operated when current flow is interrupted. The wire may be solid or stranded, single or multicore, screened, and braided with metal or textile. The fence is formed by knitting a single wire or a plurality of wires in a close mesh, the wire being firmly secured at cross-over points in the mesh.
Patent GB-562320-A (GB)
Title: Improvements in and connected with the manufacture of sand cores
IPC: B22C13/12
Filed: 1943-01-15
Abstract: 562,320. Moulding cores &c. PARKES, JUN., Ltd., J., and DAINTY, R. Jan. 15, 1943, Nos. 786 and 17307. [Class 87 (ii)] [Also in Group XXII] Apparatus for making sand cores or the like comprises a fixed block 10 having a number of parallel bores 11 corresponding in section to the cores required, a frame 16 adapted to be moved to and from the block substantially parallel to the bores, plungers 18, corresponding in number and spacing to said bores, yieldingly mounted on the frame so as to enter the bores at one end and compress sand therein, and movable means for closing the bores at the other end. The frame 16 may be carried by a lever 14 moved down by a treadle 24 and returned by a spring 26. The Tower ends of the bores 11 may be closed by pegs 27 on a plate 28 adapted to rest on nuts 129 on rods 29 and to be moved up these rods by a lever 30 to eject the cores. The lower faces of the heads 19 of the plungers 18 may be grooved to ensure cohesion between successive layers of sand. In a modification, the frame is mounted on carriages 47, Fig. 2, adapted to be moved vertically on rods 44 by a treadle 55 to which it is connected by links 54, 58, the common pivot of which is guided by a roller 59 and cam 60 so that the movement of the plungers 18 to the block requires only a small movement of the treadle. In this modification, the lower ends of the bores 11 are closed by pegs 61 carried by a plate 62, rods 63, adjustable nut 69, screw 66, lever 68, and catch 72 and, after ramming, the catch is released and the pegs lowered as shown. The plungers 18 are then locked by moving a perforated plate laterally, and the frame 6 is moved down to eject the cores onto a plate inserted between the block 10 and pegs 61 to receive them. If cores the full length of the bores 11 are required, these are closed at the bottom, during ramming, by a plate sliding in guides. The plate is then withdrawn and inserted at a lower level in other guides to receive the ejected cores. In a modification, the bores &c. may be arranged horizontally. In another modification, the block 10 may be divided on planes each passing through a number of the bores 11 so that the parts, which are clamped together during ramming, can be separated for removal of the cores. The plungers may be urged down by springs 20 or by pneumatic cylinders and pistons.
Patent GB-1419040-A (GB)
Title: Stabilized osymethylene polymers
IPC: C08L77/00
Filed: 1974-01-08
Abstract: 1419040 Oxymethylene polymer composition HOECHST AG 8 Jan 1974 [12 Jan 1973] 00801/74 Addition to 1321184 Heading C3P An oxymethylene polymer composition is stabilized by (a) 0À05 to 4% of a compound of formula where R 1  is an alkyl radical, R 2  is hydrogen or R 1 , A is a bito hexavalent aliphatic hydrocarbon radical, m is 0 to 6, and n corresponds to the valence of A, (b) 0À01 to 3% of an Mg, Ca, Sr or Ba salt of an aliphatic mono-, di- or tricarboxylic acid having 2 to 9 carbon atoms, or of an araliphatic or aromatic carboxylic acid having from 7 to 9 carbon atoms, and optionally (c) 0À01 to 1% of a compound of formula where R is hydrogen, cyano, hydrocarbyl or hydroxyhydrocarbyl. Other stabilizers may also be included such as amides, polyamides, poly N-vinyl lactams, ureas instead of (c), or light stabilizers, fillers, pigments, dyestuffs or reinforcements. Examples refer to the stabilization of an acetylated formaldehyde homopolymer or a copolymer of trioxan (98%) and ethylene oxide (2%) with (a) tetrakis[beta-(3,5-di-tbutyl - 4 - hydroxyphenyl) - propionyloxymethyl]methane or 1,6 - bis - [beta - (3,5 - dit - butyl - 4 - hydroxyphenyl) - propionyloxy]- hexane, (b) calcium lactate or the magnesium salts of acetic, propionic, caproic, pelargonic, lactic, malic, hydroxy-pivalic, malonic, adipic, salicylic, cinnamic and mandelic acids, and (c) in one case with cyanoguanidine also, and the production of valve discs and plates from the compositions by injection moulding described.
Patent GB-166508-A (GB)
Title: Improvements in furnaces
IPC: B23K1/008
Filed: 1921-01-07
Abstract: 166,508. General Motors Research Corporation, (Assignees of Lee, C. L.). July 14, 1920, [Convention date]. Gaseous-fuel furnaces. - In a furnace for attaching cooling fins to internal - combustion engine cylinders. such as by the process described in Specification 165,764, [Class 7 (ii), Internal-combustion engines, Arrangement &c. of], the external surface of the cylinder to which cooling fins are brazed by heat applied internally is protected from the deleterious action of combustion products and air. and movement is imparted to the cylinder to counteract the tendency of gravity to remove the brazing material from the desired position. A rotary casing 20, lined with insulating material 21, is provided with an end plate 23 through which the burner pipe 33 projects. The cylinder 60 is centred and supported at one end by a sleeve 25, which is secured to the plate 23 and is recessed to form a gas-tight connection with the cylinder 60, and at the other end by a plate 61, to which the cylinder is attached by bolts 62 passing through the valve ports. The plate 61 is slidable within the casing and is introduced through the end thereof, which is fitted with a door 26, the door being provided with a spring-pressed plunger 63 which retains the cylinder in position and permits expansion, securing-screws 27, and a peephole 29 in line with a hole 64 in the plate 61. The burner preferably comprises a carburettor 36, which supplies vapour through a jet 37 to a chamber 31, air being supplied through perforations from an annular air-chamber 30 and pipe 39. Air from an orifice 38 adjacent to the jet 37 also impinges on the issuing vapour and distributes it throughout the chamber 31 in which it is mixed with further air and ignited by a sparking-plug 32. The extension pipe 33 projects into the cylinder 60 and combustion products escape to the stack 35 through an annular space between the pipes 33 and 34. Vents 24<1> are provided in the plate 23 to allow the escape of combustion products and air which leak into the casing. The fins may not be non-ferrous and are folded or crimped and placed around the cylinder 60 with a sheet of brazing metal interposed, the whole being bound together with wires. Suitable fluxes are added. The casing is provided with discs 22 which rest on rollers 11 which are revolved by a motor 12 through gearing. Specifications 106,662, [Class 75 (i), Burners &c.], 106,812, and 107,571 are referred to.
Patent GB-571972-A (GB)
Title: Improvements in and relating to shuttles for looms
IPC: D03J5/08
Filed: 1944-01-17
Abstract: 571,972. Loom shuttles. PILKING- TON, J., and PILKINGTONS, Ltd. Jan. 17, 1944, No. 859. Drawings to Specification. [Class 142 (iii)] A pivot pin for the tongue of a loom shuttle comprises a cylindrical shell or casing of plain or laminated wood, vulcanized fibre or other suitable hard non-metallic material and a steel core fitting closely within the bore of the shell or casing.
Patent GB-1428451-A (GB)
Title: Castors
IPC: B60B33/00
Filed: 1973-01-06
Abstract: 1428451 Castors BRITISH CASTORS Ltd 1 April 1974 [6 Jan 1973] 898/73 Heading A4U [Also in Division B7] A castor comprises wheels (13), 14 rotatably mounted on a body 10 and displaceable vertically relative to the body, and resilient means such as springs 22 biasing the wheels downwardly. The body 10 has a socket 11 in which is rotatably mounted a spindle 12 for attaching the castor to an article of furniture. The spindle may be retained in the socket 11 by a small projection formed in the socket 11 engaging a groove in the spindle. The wheels are inter-connected by interfitting spigots 17, 18 and the spigots may be fixed together or may be inter-connected by co-operating projection and recess means which permit relative rotation. The wheels are rotatably mounted on a carrier 19 which is slidably disposed in an opening 21 in the body 10 and which may be formed of two initially separate parts inserted into the opening 21 from opposite sides of the body and then secured together. Resilient buffers may be provided to limit vertical movement of the carrier 19. The springs 22 may be replaced by cylindrical blocks of rubber or other elastomeric material or by a leaf-spring. The carrier 19 may be replaced by a lever pivotally mounted on the body and biased downwardly by resilient means which may be a coiled spring, a leaf-spring, a block of elastomeric material or a torsion spring. A damper may be provided for damping movement of the carrier relative to the body and may be of the friction type or a fluid filled damper. In a modification, Fig. 4 (not shown), the spigots of the wheels are retained in assembled relation by a headed member received within a bore in the inner spigot and retained by a rib on the member engaging a recess in the bore and by co-operating splines on the member and in the bore. In a second modification, Fig. 5 (not shown), the wheels have spigots which are inter-connected directly but which are engaged over spigots projecting from the sides of the carrier. In a third modification, Fig. 6 (not shown), the carrier has a central bore having disposed in it an axle on opposite ends of which are rotatably mounted the wheels, and bearing sleeves are interposed between the bores of the wheels and the axle and are rotatable on the axle and are retained in the bores of the wheels by co-operating ribs and grooves. In another embodiment, Figs. 7 and 8 (not shown), the springs 22 are replaced by a single central spring. The carrier is inserted into the opening in the body from below, the opening extending to the bottom of the body and the carrier being retained by a member releasably closing the opening. The spring may be replaced by two springs in this embodiment, Fig. 10 (not shown). The carrier may be biased by two or more resilient elements arranged to provide a progressive rate of springing.