baber/WOPTO huggingface dataset:
Patent GB-123959-A (GB)
Title: Trimming Mechanisms for Sewing Machines.
Inventor: FAIRWEATHER WALLACE
IPC: D05B37/04
Filed: 1918-02-07
Abstract: 123,959. Fairweather, W., (Singer Manufacturing Co.). Feb. 7, 1918. Sewing - machines; trimming or cutting; presser - bars; presserfeet. - In sewing-ma. chines such as described in Specification 123,794, the trimming-knives and the sole-piece of the presser-foot have slight relative movement to meet the conditions arising out of irregularities in the thickness of the work, cross-seams, and the like. The presser-foot shank 43, Fig. 4, is hinged to the shank 39 which is provided with a rigid extension 46, in a recess of which the. ledger blade 47 of the trimming mechanism is secured by screws. The part of the presser-foot under the blade 47 is recessed at 43<1> to allow the blade to be set close to the surface of the work. The movable blade 49 is supported on the ledger blade and is clamped in the end of an arm 51 secured to the lower end of an actuating shaft 26 which is rocked by a. link 56 connecting an upstanding lug on the needle lever with an arm 55 clamped on the shaft. A spring 59 surrounding the shaft holds the movable blade in working engagement with the ledger blade. The presser bar 22 carries at its upper end a sleeve 23 in which is secured a pin 24 with a guide.sleeve 25 embracing the cutter shaft. The other end of the pin carries two rollers, one of which, 27, is engaged by a blade spring 29 and the other 28 is acted on by the cam surface of a lifting lever 33.
Patent GB-445664-A (GB)
Title: Improved attachment device for use in connection with tubes or rods
IPC: G09F7/18
Filed: 1935-07-17
Abstract: 445,664. Screw clamps. WHITBYS, Ltd., 28, Eagle Street, High Holborn, London, and SHIPWAY, S. P., 31, Beechwood Avenue, Ruislip, Middlesex. July 17, 1935, No. 20399. [Class 44] [See also Group XIV] An attachment to grip tubes 10 of various shapes and sizes comprises two arms 1, 2 hinged at 3, and having tapped holes in the overlapping ends 4, 5, to receive the screwed end of a rod 6. A screw 7 in the arm 2 is positioned as shown. The arm 1 contains a recess with ends 8, 9, which bear on the tube being gripped.
Patent GB-201402-A (GB)
Title: Improvements in variable speed gears for motor bicycles and similar self propelled vehicles
IPC: F16H15/20
Filed: 1922-07-27
Abstract: 201,402. Rothwell, S. R. July 27, 1922. Variable-speed friction gearing comprises driving and driven conical drums 6, 7 connected by a wheel 13 movable upon a shaft 14 supported at its ends in a double lever or frame 16. The frame 16 is supported at one side of the gear case 1 by pivots 17 and is pressed upwards by a spring 18 to keep the roller 13 in frictional engagement. The spring 18 can be compressed to disconnect the drive by a lever 21.
Patent GB-294117-A (GB)
Title: Improved manufacture of fertilizers containing nitrogen and phosphoric acid
IPC: C05B11/06
Filed: 1928-07-16
Abstract: 294,117. Elektricitõts-Werk Lonza. July 14, 1927, [Convention date]. Manures.-A mixture of calcium nitrate and phosphate for use as a manure, which does not readily become damp, is prepared by reacting upon crude phosphate with nitric acid of such concentration (65-75 per cent strength) that the product contains less water than the normal content of water of crystallization, preferably less than is necessary for the formation of the tetrahydrate of calcium nitrate. Alternatively crude phosphate may be treated with nitric acid of 60 per cent strength and the product dehydrated by treatment with dry air at a temperature below 40‹ C. The subsequent formation of oxides of nitrogen is prevented by adding to the product a small proportion of urea.
Patent GB-516886-A (GB)
Title: Improvements in and connected with cocks or valves
IPC: F16K27/06
Filed: 1938-07-12
Abstract: 516,886. Valves. BROWN, F. V., and AIRCRAFTINGS, Ltd. July 12, 1938, No. 20617. [Class 135] A valve-unit adapted to be readily removed from a housing without disturbing the connections thereof comprises a ported body or casing formed with external grooves receiving a basket - like packing for sealing the ports from one another. The unit shown in the Figure comprises a conical plug a engaging a seating c in a body b mounted in a housing d formed with four sockets d‹. The body is secured by bolts passing through lugs n, or by a cap nut or the like. The plug is formed with a through hole l, and the seating and body are formed with ports m leading to the sockets d'. The body is formed externally with two circumferential grooves and four longitudinal grooves for receiving a basket-like packing consisting of rings k, k' and four connecting- pieces k<2>. The valve may, as described in Specification 481,128, be provided with a camdevice for easing the plug when the handle h is turned. When the valve-body has only two ports, the basket-like packing consists of two rings and two connecting-pieces.
Patent GB-762665-A (GB)
Title: Improvements relating to servo mechanisms
Inventor: CORBETT JAMES PATRICK
IPC: G05D3/12
Filed: 1953-07-24
Abstract: 762,665. Electric positional control systems. ENGLISH ELECTRIC CO., Ltd. July 23, 1954 [July 24, 1953], No. 20622/53. Class 40 (1). [Also in Group XXXVII] A three - phase induction motor is used for driving the output shaft in a closed loop positional control system and controlled through a magnetic amplifier. As shown, a threephase induction motor 24 drivesan output shaft 10 through gearing 10b in positional correspondence with an input shaft 11. Lack of correspondence between the two shaft positions is detected by magslips 12, 15 driven by the respective shafts. The rotor 12c of receiver magslip 12 is fed from the phase leads 14a, 14b and the error signal developed in the rotor 15c of magslip 15 is converted in a polarized rectifier 16, Fig. 2 (not shown), into a D.C. of corresponding magnitude and polarity. This D.C. is fed to a magnetic pre-amplifier 17 having push-pull output windings 17a, 17b connected via rectifier bridges 18, 19, respectively, across the phase leads 14a, 14b. The D.C. outputs of these bridges 18, 19 which thus vary differentially in accordance with the magnitude and sense of the error signal, are fed respectively through the series connecting control windings 20a-21a-23a-22a and 20b-21b-23b-22b of magnetic amplifiers 20-24, which each have an additional D.C. winding (not shown), arranged to oppose the windings 20a, 23a and assist 21a, 22a. The winding pairs 20a, 21a ... &c. of each amplifier are connected in opposition. The output coils 20c-21c-23c- 22c of these amplifiers are connected bridge fashion across the phase supply leads 14a, 14b and the phase windings 24a, 24b of the motor 24 are connected across the output of this bridge. The third phase winding of the motor is directly connected by a switch 29 to the third supply phase 14c. The magnitude and sense of the energization of the motor phase 24a, 24b thus varies in accordance with that of the error signal so that the motor runs in the follow-up sense. A postion of the bridge output feeding the motor is also fed back negatively to the pre-amplifier input via a polarized rectifier 25, similar to 16, and a transformer 28, to inject a voltage varying according to the rate of change of the input voltage to the motor windings. Further negative feed-back, proportional to the motor speed and derived from an induction generator 26 driven by the motor, is fed back via a further polarized rectifier 27, similar to 16, to the pre-amplifier 17. To reduce the current taken by the motor 24 when stationary, the switch 29 is thrown to its other position when the motor phase winding 24c is series connected with the output of a further magnetic amplifier 30 having a D.C. control winding 30b energized according to the differential of the pre-amplifier outputs. Thus when motor 24 is at rest the winding 30a acts as a high impedance to restrict the current in the motor phase 24c. The magslips and preamplifier 17 may operate on a higher frequency than the motor 27.
Patent GB-1420942-A (GB)
Title: Stacking apparatus for lead-acid battery electrode grids
IPC: B22D25/04
Filed: 1972-05-03
Abstract: 1420942 Shearing ELECTRIC POWER STORAGE Ltd 30 April 1973 [3 May 1972] 20631/72 Heading B3W [Also in Division B8] A machine for stacking lead-acid battery electrode grids 30 each of which has a pair of laterally projecting lugs near its upper edge and which slide down a sloping slide on to a transfer plate 11 which is pivotable about a horizontal axis into a vertical plane to carry each grid in turn to a stack with its lugs resting on a pair of rails between which it hangs down, is characterized in that the transfer plate has centring means comprising a pair of members 23 movably mounted on the plate one on each side of the grid and each carrying a cam follower 32 cooperating with a cam track 36 converging towards the centre so that as the crank 17 is rotated clockwise prior to moving the transfer plate to the vertical position the members 23 will be moved towards one another to centre the grid. The apparatus may be part of a grid casting, trimming and stacking machine such as disclosed in Specification 1,278,046.
Patent GB-483689-A (GB)
Title: Improvements in or relating to pickers for looms
IPC: D03D49/36
Filed: 1937-07-26
Abstract: 483,689. Loom pickers. SENGSTSCHMID, J. July 26, 1937, No. 20663. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 26, 1938.] [Class 142 (iii)] The guide bush 7 of a picker extends almost the whole width of the picker 3 but is half cut away as shown at 9 between the two limbs of the picker. The hole for the picker spindle may be eccentric or concentric with the bush.
Patent GB-438283-A (GB)
Title: Improvements in or relating to ear protectors
IPC: A61F11/08
Filed: 1934-07-14
Abstract: 438,283. Moulds for ear protectors. DAVIS, SIR R. H., 187, Westminster Bridge Road, and LUXTON, W. R., 3, Highcroft Road, Crouch Hill, both in London. July 14, 1934, No. 20693. [Class 87 (ii)] [See also Group VI] A mould for casting conical wax bases of ear protectors comprises separable halves 1, 2 of plaster of Paris, metal, wood, or other material, hinged along a bottom edge and formed with cavities 3.
Patent GB-807049-A (GB)
Title: Fluff-blower for circular knitting machines and circular spring needle machines
IPC: D04B35/32
Filed: 1956-07-04
Abstract: 807,049. Compressors. TERROT, H. and KUNEMUND, F. [trading as TERROT SÍHNE MASCHINEN-FABRIK, C.] July 4, 1956 [Aug. 3, 1955 ; April 19, 1956], No. 20769/56. Class 8(1). [Also in Group VIII] Reciprocation of nearly_out-of-phase pistons 7a, 7b, Fig. 2 in bores 2a, 2b in the marginal portion 2c of a rotating plate 2 supporting the needle disc 3, Fig. 1, of a a circular knitting machine (see Group VIII) is effected by abutment of piston rollers 7d against a stationary cam ring 4a. As shown piston 7a delivers air  through a duct 9a, a sleeve 15a, Fig. 5 of an automatic three-way valve 10 carried by the plate 2, past a ball valve 19 and up a vertical bore 14, Fig. 6 leading to a nozzle 3b in the needle disc 3, whereas piston 7b draws air past an inlet valve 18b in a bore 12b of the valve 10, through a sleeve 15b and a duct 9b leading to the bore.
Patent GB-876100-A (GB)
Title: Improvements in ratchet wrenches
Inventor: BAGGOTT ALLAN
IPC: B25B13/46
Filed: 1959-06-17
Abstract: 876,100. Wrenches. MELDRUM Ltd., THOMAS. June 17, 1960 [June 17, 1959], No. 20816/59. Class 61. A ratchet wrench comprises a lever arm 10 provided with an integral circular eye 11 carrying a concentric ring of ratchet teeth 12 engaged by a spring urged pawl 20 seating in a notch formed in a circular pawl-carrying member 16 having a central polygonal opening 18 for engaging a workpiece to be turned. The member 16 is removably and rotatably held in the eye 11 by a pair of centrally orificed discs one on each side of the eye and seating in annular recesses in the ends thereof. The discs are secured to one another by pins 17 passing through the pawl carrying member. The spring 22 urges the pawl into driving engagement with the ratchet teeth on rotation of the eye in one direction and allows idling engagement of the pawl with the teeth on rotation of the eye in the reverse direction. Two diametrically opposed pawls and accommodating notches may be provided. The outer end of the lever is bulbous in shape. The mouth of pocket 19 which accommodates the pawl is wider than the base to allow the pawl to rock on its rounded base.
Patent GB-1395214-A (GB)
Title: Thiazolinyl and thiazinyl derivatives of benzimidazoles
IPC: C07D417/04
Filed: 1972-05-04
Abstract: 1395214 Thiazolinyl and thiazinyl derivatives of benzimidazole E R SQUIBB & SONS Inc 4 May 1972 [4 May 1971] 20877/72 Heading C2C Novel compounds of the Formula I wherein R is H, C 1-7  alkyl or alkoxy, aralkyl, aryl substituted aryl, aryloxy, acyl, C 1-7  alkylthio, arylthio, CF 3 , NO 2 , halogen, CN, -SCN, NH 2 , amido, substituted amino, (in which R<SP>3</SP> is H, C 1-7  alkyl, aryl, aralkyl or alkylaryl), dialkylaminoalkyl, carboxyl, alkoxy- or aryl oxycarbonyl (i.e. R<SP>3</SP>OCO), carbamate ester (i.e. -NHCOOR<SP>4</SP> in which R<SP>4</SP> is alkyl, aralkyl, aryl or substituted aryl), carbamoyl or thiocarbamoyl (i.e. in which Q is 0 or 5 and R<SP>5</SP> is alkyl, aryl or cycloalkyl); R 1  is H, C 1-7  alkyl, aralkyl, cycloalkyl, aryl, or substituted aryl, halogen, a heterocyclic radical containing 1-3 heteroatoms or an alkanoic acid (-R<SP>6</SP>COOH in which R<SP>6</SP> is C 1-6  alkylene; R<SP>2</SP> is H, C 1-7  alkyl, aralkyl, aryl, or substituted aryl and the structure is a 5- or 6-membered ring in which the curved line is C 2  or C 3  alkylene; and n is 1 or 2 and acid addition salts thereof in which the cycloalkyl groups contain 3 to 8 carbon atoms, may be prepared by reacting an appropriate 1-unsubstituted benzimidazole with strong base followed by a haloalkyl isothiocyanate of the Formula IV wherein X is halo and the curved line is as defined above to form the thiazoline or dihydrothiazine ring. The intermediate 1-unsubstituted benzimidazoles may be prepared by known methods. The 2 - haloethylisothiocyanates and 3 - halopropylisothiocyanates may be prepared by reacting the appropriate 2-haloethylamine or 3-halopropylamine with thiophosgene. Pharmaceutical compositions of the compounds I show anthelmintic and antiinflammatory activity when administered orally, and in the case of the former activity as a drench, with the usual excipients.
Patent GB-1473346-A (GB)
Title: Hydraulic distributor slide valve
IPC: F16K11/07
Filed: 1974-05-10
Abstract: 1473346 Valves BENNES MARREL 10 May 1974 [11 May 1973] 20895/74 Heading F2V A spool valve has lands 2 provided with fluid passageways 7 opening at their ends 12 into the cylindrical surface of a land and at their central portion into a recess 13. The latter is of constant trapezoidal cross-section as shown in Fig. 6. The passageways prevent fluid pressure forces in the direction of movement of the spool.
Patent GB-1437457-A (GB)
Title: Endless loop tape cassette
IPC: G11B23/06
Filed: 1973-05-18
Abstract: 1437457 Tape cassettes WESTINGHOUSE ELECTRIC CORP 18 May 1973 [18 May 1972] 20904/73 Heading B8M A cassette 10 contains an endless loop of magnetic tape 45 which passes over, but is not wound around, a hub 46 having driving ribs 47, together with means for keeping the tape taut, which may take the form of a spring-loaded roller 50, Fig. 1, or of springs 80, Fig. 4B, or resilient material between the centre and the rim 76 of the hub 46 and/or of a second hub 48. As shown, Fig. 1, the hub 46 is connected to a braking motor 62, and the cassette 10 has holes 32, 34 to receive a pinch roller 36 which cooperates with an external capstan 24 to drive the tape 45, the capstan 24 being urged against the tape by a solenoid 30. The tape may carry a recorded message for normal playback or a test signal for high-speed playback.
Patent GB-239198-A (GB)
Title: Improvements in and relating to heel clamps for skates
IPC: A63C1/04
Filed: 1925-08-20
Abstract: 239,198. Dornseif, H. Aug. 29, 1924, [Convention date]. Skates.-Cutting members d which bite into the material of the heel are inserted from the inside of the clamps b which are drawn together by a screw. Rivets f secure the cutters in place in slot-like portions of apertures c.
Patent GB-1021569-A (GB)
Title: Flash evaporators
IPC: B01D3/06
Filed: 1964-05-20
Abstract: 1,021,569. Flash evaporators; distillation of sea water. BALDWIN-LIMA HAMILTON CORPORATION. May 20, 1964 [May 20, 1963], No. 20921/64. Heading B1B. Liquids such as sea water are submitted to flash evaporation in an elongated vessel 12 throughout the length of which extends a slotshaped chamber 24 defined by parallel sidewalls 26, 28 but open at the bottom for the entry of liquid and open at the top for the discharge of liquid/vapour mixture, there being on each side of the chamber 24 a partition 38, 40 which extends laterially to the housing of the vessel and slopes down longitudinally from end-wall 20 to end-wall 22. Partitions 38 and 40 divide each of the spaces between chamber 24 and the housing into upper and lower compartments. The apparatus shown in Fig. 1 is part of a three-stage evaporator, stage 14 being interposed between stages 16 and 18. Hot brine flows from stage 16 through holes 50<SP>1</SP> and 52<SP>1</SP> in end-wall 20 into the lower compartments 42, 46 of stage 14. The brine flows under the bottom edges of side-walls 26, 28 into chamber 24 where flash vaporization of some of the water occurs because the pressure in stage 14 is lower than that in stage 16. The steam/brine mixture rises up chamber 24 and impinges on deflectors 54, 56 which causes the brine to fall freely so that the steam separates from it. The brine collects in the upper compartments 44, 48. Entrained droplets of brine are removed from the steam as it rises through mesh-separators 58, 60. The steam condenses on the outer surface of finnedtubes 64 which are cooled by the passage through them of sea water which is to be distilled. The condensate collects in pan 68, and flows out of the apparatus through pipe 70 as product, i.e. distilled water. The brine which collects in compartments 44, 48 flows through an increasing area to the openings 50 and 52 leading to the next stage 18. The liquidlevel in compartments 44 and 48 is above the upper edges 51, 53 of the openings in the endwall 22, so that the space above the brine in stage 14 is isolated from stage 18. A thirtystage process for the distillation of sea water is described, wherein the sea water is first mixed with the concentrated brine discharged from stage 1. The mixture so formed has a temperature of 100 ‹F. and is passed successively through the condenser tubes of stages 1 to 30, during which the temperature of the water rises to 200 ‹F. In stage 30 an addition of 10 ‹F. is made to the temperature of the water, e.g. by a steam heater ; and the water is then submitted to successive flash vaporization in stages 30 to 1. A three-stage apparatus is also described wherein each stage has six parallel riser-chambers 24 and each chamber is associated on both sides with a sloping partition. Each chamber may be provided with a butterfly valve near the upper end. The distillate is collected in a tank disposed in the housing below the riser-chambers. A plurality if such three-stage units may be connected side by side.
Patent GB-722297-A (GB)
Title: Improvements in or relating to polymerization products
IPC: C08L33/20
Filed: 1952-08-21
Abstract: Films and fibres made from homogeneous mixtures of an acrylonitrile polymer and a copolymer containing a plurality of different types of structural units derived from ethylenically unsaturated monomers, at least one of which contains a basic tertiary-amino group linked to the ethylenic structural unit through an amide linkage (see Group IV (a)), are, dyed with acetate, basic, acid, and vat dyestuffs.ALSO:Compositions comprise a homogeneous mixture of an acrylonitrile polymer and a copolymer containing a plurality of different types of structural units derived from ethylenically unsaturated monomers at least one of which contains a basic tertiary-amino group linked to the ethylenic structural unit through an amide linkage, such as N-(2-pyridyl) acrylamide and methacrylamide, p-dimethylamino acrylamide and methacrylamide, N-pyridyl itaconic and maleic acid monoamides and diamides and the methyl and ethyl esters of the monoamides, N-(2,6-dimethyl-4-pyrimidyl) acrylamide, and N-(2,6 - dimethyl - 4 - pyrimidyl) monoamide of itaconic acid monomethyl ester, and the corresponding derivatives of guanazole and guanazole derivatives. Specified copolymers of the ethylenic tertiary-amino amides are those with one or more of styrene, alpha-methyl styrene, vinyl naphthalenes, methyl acrylate, methyl methacrylate, acrylonitrile, methacrylonitrile, acrylamide, methyacrylamide, beta - cyano - acrylamide, methyl beta - cyano - acrylamide, dimethyl and diethyl fumarates, maleates, and itaconates, fumaraonitrile, itacondiamide, vinyl and vinylidene fluorides and chlorides, tetrafluoroethylene, trifluorochloroethylene, and vinyl acetate.  Polymers of acrylonitrile specified are polyacrylonitrile and copolymers with the copolymerizable monomers referred to above.  The polymers may be mixed on blending rolls or by solution in a mutual solvent such as dimethyl formamide, dimethyl acetamide, dimethyl cyanamide, dimethyl cyanoacetamide, dimethyl methoxyacetamide, dimethyl methyl urethane, butyrolactone, ethylene carbonate, ethylene carbamate, methylene dinitrile, methylene dithiocyanate, formyl caprolactam, formyl morpholine, tetramethylene sulphone, and nitromethane.  The solutions of the polymer mixtures may be formed into films and fibres which may be oriented by stretching and dyed with acetate, basic, acid or vat dyestuffs.  The polymers may be prepared in emulsion, suspension, mass, or solution in the presence of catalysts such as hydrogen, benzoyl, naphthyl, and phthalyl peroxides, cyclohexyl hydroperoxide, tertiary-butyl hydroperoxide, tertiary-butyl perbenzoate, ammonium persulphate, and azo catalysts; exemplified is the use of an aqueous polymerization medium of pH 3 containing a mixture of ammonium persulphate and sodium bisulphite as a catalyst.
Patent GB-1431145-A (GB)
Title: Inoculants for iron-based an nickel-based alloys
IPC: C21C1/10
Filed: 1974-05-13
Abstract: 1431145 Inoculants for Fe or Ni base alloys INST PROBLEM LITYA AKAD NAUK UKRAINSK SSR 13 May 1974 21098/74 Headings C7A and C7D An inoculant for iron-or nickel-based alloys consists of 3-25% by volume of one or more of the nitrides, carbides, carbonitrides, borides and oxides of Ti, Zr, Ta, Hf and Th produced in the matrix and dispersed therein as particles not more than 5 Ám in size, the matrix being Fe-or Ni-based and consisting of 0-10% total of one or more rare earth metals, 0-50% total of one or more of Mn, Mo and Si, and the balance being Fe or Ni. The inoculant may be made by heating a melt of the matrix alloy above the formation temperature of the high melting point compounds adding the elements to form the compounds in substantially stoichiometric proportions and cooling the melt at 10<SP>2</SP> to 10<SP>7</SP> C/sec. Examples show inoculating Ni-base alloys or Cu-Ni steels.
Patent GB-243290-A (GB)
Title: Improvements in or relating to screw oil pumps
IPC: F16N13/20
Filed: 1925-08-25
Abstract: 243,290. Birmingham Small Arms Co., Ltd., and Hulse, F. W. Aug. 25, 1925. Worm pumps; leakagepreventing devices.-An oil pump, particularly for use with internal-combustion engines, has a rotary worm 2 working in a liner 14 mounted in the casing 6 which is preferably formed integral with the valve timing case cover plate 12. A collar 3 is formed on the rotary member 2 and an annular groove 4 forms a chamber in communication with the inlet 5. The end 7 of the shaft is reduced to form an oil pocket 8 in communication with the outlet 9. A spring-pressed ball or plunger 11 in the recess 10 holds the collar 3 against the screwed sleeve 15 thereby forming a seal. While the pump is operating the axial thrust produced helps to maintain the seal.