baber/WOPTO huggingface dataset:
Patent GB-642952-A (GB)
Title: Improvements in or relating to a clutch
IPC: F16D43/12
Filed: 1947-08-06
Abstract: 642,952. Friction clutches. DANA CORPORATION. Aug. 6, 1947, No. 21375. Convention date, May 3, 1944. [Class 80(ii)] In a plate clutch of the single intermediate driven disc type, having centrifugal weights 19 acting through spring means on a collar 15 operating the normal throwout levers 10, the weights 19 have cross-head portions slidably pivoted in lugs 31 on the back plate 11 and carrying rollers 38, 39 bearing respectively on the plate 11 and on a ring 14 between which and the collar 15 are arranged a plurality of springs 13. As shown, the lugs 31 slidably locate radial lugs 33 on the ring 14 and are slotted to receive rollers 35 on the pivot pins of the weights 19, which are notched to clear the lugs 33. The ring 14 slides on spring-retaining pins 43 on the collar 15, which is slidable by a throw-out collar 17 for manual clutch disengagement. The weights 19 abut the plate 11 in their outward movement before the line of centres of the rollers 38, 39 becomes parallel to the clutch axis, so the the springs 13, which are pre-loaded, always act to restrain the weights. The levers 10 act on the presser plate 9 through bolts 26 adjustable to take up clutch wear.
Patent GB-1435194-A (GB)
Title: Aqueous copolymer dispersions
IPC: C08L71/02
Filed: 1973-05-04
Abstract: 1435194 Curable aqueous dispersions of acidic copolymers DESOTO Inc 4 May 1973 [1 June 1972] 21376/73 Heading C3P A curable aqueous dispersion of copolymer particles which is stable in the absence of emulsifying agent is prepared by polymerizing a mixture of monoethylenic monomers including 1-30 wt. per cent of a monoethlyenic carboxylic acid, in the presence of 0À5 to 50 wt. per cent based on the monomers used, of a tri- or tetrahydric alcohol having a molecular weight up to 6000, in aqueous dispersion in the absence of an emulsifier, and in the presence of an initiator, with agitation. The tri- or tetra-hydric alcohol remains in the organic (monomer) phase during polymerization and is thus contained in the polymer particles obtained. In a preferred product, the polymer particles have a size of 0À5 to 5 microns. Exemplary tri- or tetrahydric alcohols are glycerine, 1,2,6-hexane triol and pentaerythritol; polyether derivatives of the above or trimethylol propane with ethylene oxide or propylene oxide; trihydric alcohols produced by reaction of ethylene oxide or propylene oxide with phosphoric acid and similar products wherein all or part of the epoxide is replaced with a glycol such as ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol-425, -1025 and -2025, hexylene glycol, 2-methyl-2-ethyl-1,3- propane diol, 2-ethyl-1,3-hexane diol, 1,5- pentane diol, thiodiglycol, and ester diol of the formula
Patent GB-1313976-A (GB)
Title: Liquid piston rotary gas pumps assembly
IPC: F01C7/00
Filed: 1971-04-19
Abstract: 1313976 Rotary shaft seals SIEMEN & HINSCH mbH 19 April 1971 [31 Jan 1970] 21406/71 Heading F2B In an assembly comprising a liquid piston rotary gas pump 1 driven by a flanged motor 2, the pump casing 10 being secured to the motor flange and the hub 14 of the rotor 13 being supported by the motor stub shaft 20, the hub 14 extends through the pump casing wall facing the motor and is mounted on the shaft 20 by key and groove means 22 providing free axial movement and the shaft is sealed by an end face seal 3 which is located on the motor side of said wall and extends between the wall and a shoulder 21 on the shaft 20. The seal 3 in the upper part of Fig. 1 has a rotary part urged against the wall by a spring 23 abutting the shoulder 21 and, in the lower part of Fig. 1, one end of the seal is press-fitted on the wall and the other end sealingly engages the shoulder 21. In a modification, Fig. 2 (not shown), the rotary member of the seal is a ring (30) keyed to the shaft (20) and abutting the shoulder (21). In a further modification, Fig. 3 (not shown), the seal contact faces are urged into engagement by a flexible diaphragm (24).
Patent GB-573876-A (GB)
Title: Improvements in or relating to composite articles of furniture
IPC: A47C17/86
Filed: 1943-12-21
Abstract: 573,876. Ottoman-washbasins &c. ROBINSON, H. R. Dec. 21, 1943, No. 21412. [Classes 52 (ii) and 52 (iii)] The box portion of an ottoman 1 is divided into two or more compartments, one to receive drawers 3 and another to hold a wash basin unit. The drawers may pull out from the end or the front. An intermediate compartment or drawer may be located between the drawer section and the wash basin section. The wash basin unit 6 is accessible by tipping up the seat portion 1<x>, the basin unit then being pulled up to the requisite height and held there by stops 9, on the unit, engaging notched bars 8. To lower, the notched bars are pulled away from the stops by a foot lever 12. A mirror 14 behind a shelf 15 can be raised up to position on hinged supports 16. The end door 17 may carry a towel rail 18 &c. The end rest 2 is adjustable.
Patent GB-387342-A (GB)
Title: Improvements in or relating to electric couplings
IPC: H01R13/11
Filed: 1931-07-28
Abstract: 387,342. Plug-and-socket couplings. BARBER, W. E., Royal Aircraft Establishment, South Farnborough, Hampshire. July 28, 1931, No. 21461. [Class 38 (i).] The socket of a plug- and-socket coupling comprises a tubular member 1 of triangular cross section and a connecting tag 2. In Fig. 6, the edges of the side portions are curved to facilitate insertion of the plug and the tag 8, of tubular form also, is provided with a portion 10 bent outwards to secure it in position. A multiple socket member of this form may be constructed from a single sheet of metal.
Patent GB-456079-A (GB)
Title: Shoe with fixed orthopaedic foot support
IPC: A43B7/22
Filed: 1935-07-29
Abstract: 456,079. Foot supporting insoles. FREI, E., 83, Bahnhofstrasse, Zurich, Switzerland. July 29, 1935, No. 21508. [Class 17 (ii)] A foot support of flexible non-metallic material fixed beneath the sock 9 of a shoe comprises two limb-like parts 1, 2, one for each side of the shoe, thinned at their inner edges, which may overlap, to provide a lengthwise depression, and a third part extending to the heel and cut away at 5 to accommodate the heel bone. Both or one of the limbs may be in one piece with the heel part, Figs. 2 and 12 respectively. The support is of varying thickness corresponding to the undulations of the foot sole, and additional pieces, for example a metatarsal support 7, may be secured to it. It may be curved as desired and provided with a cut away portion 3 and depression 4 for the balls of the big and little toe respectively.
Patent GB-300674-A (GB)
Title: Improvements in or relating to pipe joints or couplings
IPC: F16L17/02
Filed: 1927-08-16
Abstract: 300,674. Stiennon, S. J. Aug. 16, 1927. Sleeve joints with packing expanded by fluid pressure. - Fluid-tightness between the adjacent ends of two pipes f, l, Figs. 1 and 2, having attached flanges d is secured by packing rings c which are located in peripheral grooves k in the flanges d and are expanded against an external sleeve e by the internal fluid pressure acting through small orifices b formed in the ends of the pipes and the flanges as shown. The sleeve c is retained in position by loose flanges g and bolts m. In a modification, Fig. 2, the retaining flanges and bolts are replaced bv a two-part sleeve D; while the orifices b are led to the space between the pipe ends.
Patent GB-1187812-A (GB)
Title: Improvements in Apparatus for the Hydrostatic Transmission of Mechanical Torque.
IPC: F16H39/40
Filed: 1967-05-09
Abstract: 1,187,812. Hydrostatic transmission. SOC. ANON. ANDRE CITROEN. 9 May, 1967 [23 May, 1966], No. 21581/67. Heading F2C. [Also in Division F1] In a hydrostatic transmission for a vehicle wherein a variable displacement swash-plate pump 2 having a rotary cylinder block 4 supplies pressure liquid to two or more motors 36, 37, a driving gear 15 fast with the cylinder block 4 is driven from an input shaft (1) through a reduction gear (12), 15. The gear 15 may be integral with the cylinder block 4. The input shaft (1) may, Fig. 1 (not shown), be parallel to the pump axis and drive the cylinder block through straight or helically toothed gears (12), 15, or the input shaft may be perpendicular to the pump axis and drive the cylinder block through bevel gears. The rotary cylinder block 4 of the pump bears against the spherical surface of a fixed distributer plate 21 and carries pistons 6 which bear on the spherical surface of a non-rotary swash-plate 7. The inclination of the swashplate 7 is varied by supplying pressure fluid to a servo 61. A spring 32 acts through a sleeve 20 to bias the cylinder block 4 into engagement with the distributer plate 21. During normal running the spring pressure 32 is augmented by supplying pump output pressure to the interior of the sleeve 20 and during overrun the return pressure augments the spring pressure. The motors 36, 37 have radial pistons 40, 41 carried by output cylinder blocks 36, 37 and engaging eccentric rings 42, 43 freely rotatably mounted in housings 48, 49 which are pivoted about an axis 53 to vary the eccentricity of the rings 42, 43 and thus the displacement of the motors. Alternate pistons 40 (or 41) of each motor are oppositely inclined to a radial plane. Pressure fluid is supplied to the motors 36, 37 through a common distributer 28.
Patent GB-570775-A (GB)
Title: Improvements in apparatus for heating or stoving fabrics
IPC: F26B13/10
Filed: 1943-12-24
Abstract: 570,775. Drying fabrics. HUNT & MOSCROP, Ltd., and SHARPE, J. Dec. 24, 1943, No. 21594. [Class 34 (i)] In apparatus for drying an impregnated or coated fabric length in which the fabric B is suspended in long loops b from poles C which are traversed slowly through a casing A or between sets of upper and lower rollers, heated air is circulated through the casing by one or more fans El, E<2> located at each side thereof. The fan, or fans, El is disposed within a duct A<1> and delivers air through a bank of heating tubes D<1> to a space a4 above the poles c or upper set of rollers and, similarly, the opposite fan, or fans, E2 delivers air through the duct A2 and heating tubes D<2> to a space d5 below the loops b or lower set of rollers, both air streams 3, 4 meeting and intermingling at a middle zone located between the suction sides of the fans. An exhaust outlet for saturated air may be provided in the top of the casing, such air being replaced by air drawn in through the inlet and outlet passages for the fabric. The tubes D<1>, D<2> are preferably finned or gilled and heated by steam, &c., under thermostatic control, and additional air heating tubes may be located above the poles C and below the fabric loops b. Cleaning apertures e<1>, e<2> normally closed by doors e3, e4 respectively, are provided at the end of the casing.
Patent GB-730446-A (GB)
Title: Improvements in the working up of iron sulphide ores
IPC: C22B1/02
Filed: 1953-08-05
Abstract: Iron sulphide ore is preheated to a temperature above 400 DEG  C., preferably 400-550 DEG  C., and contacted with a circuit gas which has been preheated to a temperature of 500 DEG  to 800 DEG  C. and which contains at least 90 per cent of sulphur dioxide and 2-8 per cent of oxygen.  The ore is thereby converted into a mixture of iron oxide Fe3O4 and leachable metal sulphates, e.g. zinc, cobalt or cadmium sulphate, together with sulphur which passes off into the circuit gas.  The circuit gas withdrawn from the reaction zone, which is then substantially oxygen-free, is cooled, liquid sulphur allowed to separate therefrom, and the gas then returned to the reaction zone, after heating the gas to 500-800 DEG  C. and replenishing its oxygen content.  The heat content of the withdrawn gas may be used to heat the ingoing gas by indirect heat exchange, and also for the generation of steam.  The ore may be cooled by a countercurrent of cold gas containing more than 33 per cent of oxygen and less than 66 per cent of sulphur dioxide which is then added to the circuit gas. The ore is preferably finely ground and then granulated or pelleted to a size of 2-20 mm.  The ore is preferably granulated by spraying with an aqueous solution of magnesium chloride, magnesium sulphate, aluminium sulphate, sodium chloride, potassium chloride, sodium sulphate, potassium sulphate or double salts thereof.  Specification 425,364 is referred to.
Patent GB-688103-A (GB)
Title: Sifting device
IPC: B07B1/40
Filed: 1951-09-17
Abstract: 688,103. Sifting apparatus. KRUPP STAHLBAU RHEINHAUSEN, F. Sept. 17, 1951 [Oct. 7, 1950], No. 21756/51. Class 117 [Also in Group XXXII] A reciprocating sifter box 4 is controlled in its movement by transverse bars 6 extending sideways from the box 4 and lying between rubber buffers 7, 8 mounted on a support 5 attached to the platform 1. The bars 6 have a limited and adjustable freedom of movement between the buffers, the contact surfaces of which are convex towards the bars. The platform 1 is itself mounted on springs 2 on the base, and the sifter box 4 is carried from the platform by inclined links 3. A driving-crank 9 carried on the platform oscillates the sifter by links 10, 11, the latter being mounted between springs 12 seated on a casing attached to the sifter box. Specification 413,689 is referred to.
Patent GB-418129-A (GB)
Title: Improvements in floats for fishing nets and the like
IPC: A01K75/04
Filed: 1934-07-26
Abstract: 418,129. Trawling. WEBSTER, W. H., 30, Devonshire Avenue, Grimsby. July 26, 1934, No. 21822. [Class 48.] The lug edges 2<1> of a net-float are tangential to the ends of a diameter.
Patent GB-821642-A (GB)
Title: Improvements in and relating to machines for packaging articles such as cigarettes
Inventor: HORGAN GEORGE DANIEL
IPC: B65B19/24
Filed: 1956-07-16
Abstract: 821,642. Packaging machines. INDUSTRIAL MACHINERY CO. Ltd. June 11, 1957 [July 16, 1956], No. 21878/56. Class 94(1). A single mechanism actuated by an operator raises a wrapper carried by a platform 6, Fig. 1, to position the wrapper in U-formation about a hollow mandrel 3, folds the upstanding ends of the wrapper and forms tucks at the ends of the wrapper. In the construction illustrated the platform is guided by a rod 11 connected through a spring 14 to a collar 15 raised through a linkage 17, 22, 23 to a pedal 24. After the platform 6, which has side portions 7 for turning up the sides of the wrapper, engages the mandrel 3, the spring 14 is compressed and the sleeve 15 continues to move so that cams 35 on it engage rollers 32 on arms 28, 29 which are thus turned about their shafts 30 on the platform 6 so that folding blades 25, 26 which they carry, pass through slots 36 to fold each edge of the wrapper over in turn. As this action is completed the arms 29 abut adjustable screws 44 on further spring biased arms 38 to turn them about their pivots 39 on the platform 6 so that members 37 on them make two end tucks in the wrapper. The operator then folds down the upper and lower ears of the packet. A batch of cigarettes is fed into the hollow mandrel 3, each batch pushing out the previous batch together with its formed wrapper, by tines 54 Fig. 1, moved longitudinally by a handle 59 Fig. 2, and pushing the cigarettes from a collecting station 53, where they are separated by guide plates 50, through a flared opening 5 into the mandrel 3. The cigarettes are fed to the space 53 by a pair of sheets 60, Fig. 2, formed with guides 62 and fed from a hopper 46, the walls 63, 64 of which are agitated about their pivots 66, 72 at each delivery of a package of cigarettes, by a cam 69 connected through a link 70 to the pedal 24.
Patent GB-248805-A (GB)
Title: Improvements in or relating to the control and protection of electrical apparatus
IPC: H02H7/00
Filed: 1924-09-17
Abstract: 248,805. Tinsley, H., and Cox, J. H. Sept. 17, 1924. Cut-out arrangements. - In an earthing protective system for portable electrical apparatus such as coal-cutters, having a gate-end switch B which is closed and maintained closed by a low-voltage winding b supplied from the mains through a transformer H, the supply circuit including the earthing pilot wire D of the cable and the plug and sockets c, c', d, d<1> at each end of the cable, the main switch at the gate end is remotely controlled through the low-tension pilot-wire system by the control switch E on or near the motor. The earthing protective arrangements are similar to those described in Specification 209,831. In order to open the supply circuit when excess current flows in the pilot wire system, a trip coil d<2> in the pilot-wire, circuit is adapted to operate a switch J in the supply to the transformer H. A lamp e indicates the complete condition of the pilot-wire circuit.
Patent GB-1125834-A (GB)
Title: Improvements in or relating to worm drive clips
Inventor: JOHNSON ALAN
IPC: F16L33/08
Filed: 1966-05-18
Abstract: 1,125,834. Band clips. CLARRED ENG. CO. Ltd. 23 June, 1967 [18 May, 1966], No. 2198566. Heading E2B. A worm-drive band clip includes a housing formed with indentations or inturned leaf portions 15, which engage a peripheral groove 16 formed in the screw to axially locate the latter in the housing, and a washer 14, freely mounted on the screw between the screw head and the housing prevents the screw being drawn into the housing upon excessive screw tightening. The washer 14 is substantially semi-circular, Fig. 2 (not shown), and is formed with lugs 14a, which abut pant of the housing to prevent rotation of the washer. The groove 16 and the indentations may be located adjacent the head of the screw.
Patent GB-849385-A (GB)
Title: Improvements in or relating to resistive circuit elements
Inventor: SHARPE GERALD
IPC: H03F15/00
Filed: 1958-07-09
Abstract: 849,385. Semi-conductor circuits. BRITISH TELECOMMUNICATION RESEARCH Ltd. April 14, 1959 [July 9, 1958], No. 22058/58. Class 40(6). A resistive circuit element comprises a Hall amplifier with one of the output terminals connected to one of the input terminals As shown in Fig. 6, terminal T 4  is connected directly to terminal T2, and the effective resistance measured between terminals T 1  and T 3  is negative. The network may be used as an oscillator by connecting a capacitor c between T1 and T3, such that it cancels out the input inductance L11 at the required frequency of oscillation. The Hall amplifier comprises a pot-cote 11 (Fig. 2) containing a winding 10 which constitutes the input circuit and a slice of intrinsic In Sb 12 arranged in the air gap of the cote. The output terminals T3 and T4 (Fig. 3) are connected to the long edges and a pair of terminals 13, 14 through which the bias current I B  flows are connected to the ends, the value of the resistive element being controlled by this bias current.
Patent GB-921022-A (GB)
Title: Voltage to time-interval converter
IPC: G01R19/255
Filed: 1959-06-26
Abstract: 921,022. Analogue to digital converters. HEWLETT-PACKARD CO. June 26, 1959 [July 9, 1958], No. 22074/59. Class 40 (1). An analogue D.C. voltage at input 31 is converted into a corresponding time interval by measuring the time to charge a capacitor 39 from a constant current source 41 to the value of the voltage. During this time clock pulses from an oscillator 11 are gated at 13 to a counter 19 to indicate the voltage in digital form. Charging of the capacitor is initiated by a timer 45 opening a gate 43 at the same time as it opens the gate 13. The voltage across the capacitor is compared with the input 31 in a differential D.C. amplifier 21 which delivers a stop pulse to the gate 13 when the two voltages are equal. To nullify drift effects in the amplifier, the timer automatically operates switches 29, 51 simultaneously, so that between measurements the amplifier input terminal 23 is earthed and a negative feed-back loop to the other input 25 is closed to discharge the capacitor 39 via a limiter 49 and bring the amplifier output potential to earth. The switches are moved back to the measuring position shown a few milli-seconds before the gates 13, 43 are operated by the timer to give transients in the amplifier circuitry time to die out.
Patent GB-773117-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/19
Filed: 1955-08-02
Abstract: 773,117. Suction cleaner filter bags. VAN DER HEEM, N.V. Aug. 2, 1955 [Aug. 5, 1954], No; 22115/55. Class 8(2) Means, e.g. a movable plate 16 for indicating the amount of dust in a vacuum cleaner filter bag 1 is controlled by a crankshaft 15 sliding in a slot in the plate 16 and actuated by one arm 11 of a bellcrank lever the other arm 7 of which is located beneath the bottom 6 of. the bag opposite the open end and is responsive to distention of the bag. Said distention rocks the lever about its pivot 5 against the action of a spring 10 whereupon a hook 12 at the upper end of lever arm 11 releases the crankshaft which is biased upwardly by a spring (not shown) and raises the plate into a viewing aperture. On opening a pivotal cover 4 a cam 18 engages an abutment 17 of plate 16 to reset the latter; the crankshaft being re-engaged by the hook 12 which on removing the bag from the cleaner casing 3 is urged to the forward position.
Patent GB-798697-A (GB)
Title: Cursor for facilitating the calculation of response in linear control systems
Inventor: ROSENBROCK HOWARD HARRY
IPC: G05B23/02
Filed: 1955-08-02
Abstract: 798,697. Calculating apparatus. CONSTRUCTORS JOHN BROWN, Ltd., [formerly COSTAIN-JOHN BROWN, Ltd.]. Nov. 2, 1956 [Aug. 2, 1955], No. 22117/55. Class 106 (1). A transparent member, bearing a series of parallel linear scales 2 graduated as described below and a perpendicular logarithmic scale 3, facilitates the construction of a transient response curve, Fig. 3, for a linear control system, to correspond to the frequency response curve, Fig. 1, of the system. In the a 1  lattersin # is plotted against log #, where a 0  where a 0  and a 1  are the amplitudes of input and output sine waves respectively, # is the phase difference, and # is the angular speed. The transient response to a unit change of input is a function of time f(t) represented by the following equation, in which f(#) is a constant: Now the scales 2 are each graduated so that the lengths of the unit divisions are inversely proportional to cos ##.(log #) where #.(log w) corresponds to the spacing of the scales from one another and # corresponds to the position of a given scale along the # axis. Thus, when the member bearing the scales is placed over the frequency response curve with its zero line 1 aligned with the # axis and laterally positioned with a chosen value of t on the scale 3 registering with the abscissa # = 1, the ordinates of the frequency curve as read on the scales 2 may be summed to give an approximate value for the above integral, within the effective range of the frequency response curve. The operation is repeated for other values of t to enable the transient response curve of Fig. 3 to be drawn. The portions of the scales 2 representing positive and negative values respectively may be differently coloured. As an alternative, the scales 2 may have divisions inversely proportional to sin # #.(log w) for use in a similar manner with a frequency response curve a 1  showing the relationship between - cos # and a 0  log w. By using both " cosine " and " sine " members, a frequency response curve may be constructed from a transient response curve.