baber/WOPTO huggingface dataset:
Patent GB-1375304-A (GB)
IPC: B65D33/16
Filed: 1972-07-13
Abstract: 1375304 Bag closure clips F G PAXTON 13 July 1972 32768/72 Addition to 1312037 Heading E2B A flat plastics clip for closing the necks of net bags has an access slot 15 defined by a pair of inwardly turned jaws, the space within these jaws being divided by a pair of oppositely facing transverse tongues A, B into upper and lower portions, each of which holds part of the bag neck. In the form shown in Fig. 3 the tongues A and B are pointed and there is a third tongue C producing a cruciform-shape space. This space may be of different configurations (see Figs. 2 and 4, not shown). In the form shown in Fig. 5, the third tongue is absent and the transverse tongues A', B' are barbed to better retain the bag.
Patent GB-1522303-A (GB)
Title: Method and machine for coating carpeting
IPC: D06N7/00
Filed: 1974-07-25
Abstract: 1522303 Backing pile fabrics SIDLAW INDUSTRIES Ltd 23 July 1975 [25 July 1974] 32811/74 Divided out of 1336707 Heading Dl [Also in Division B5] In a method of coating carpeting with a plastics material comprising spreading a predetermined thickness of thermoplastic material e.g. polyvinyl chloride over an area of heat-resistant carrier sheet, laying the carpeting to be coated onto said layer, thermally treating the material and the carpeting thereon to bond the material to the carpeting and removing the coated carpeting from the carrier sheet, the thermoplastic material comprises a primary layer substantially equal in thickness to the predtermined thickness extending over the area and a secondary layer which is applied to the carrier sheet in patches of predetermined dimensions substantially less than the area and prior to the application of the primary layer, the thickness of the patches being less than the thickness of the primary layer and the secondary layer being substantially immiscible with the primary layer when the primary layer is applied. An apparatus comprises a heat-resistant carrier sheet 14, doctor means 2 for spreading the primary layer, means for laying the carpeting, a hot plate 4 for bonding the carpeting to the layer, a doctor blade 6 for stripping the coated carpeting from the sheet, and, upstream of doctor means 4, a printing roller 13 in association with lick roller 12 mounted to gather the material for the patches from reservoir 10.
Patent GB-1004694-A (GB)
Title: Improvements in or relating to percussion drilling apparatus
IPC: E21B4/14
Filed: 1961-09-13
Abstract: 1,004,694. Boring earth, &c. MISSION MANUFACTURING CO. Sept. 13, 1961 [Sept. 19, 1960; Dec. 5, 1960], No. 32915/61. Heading E1F. [Also in Division B4] Percussion drilling apparatus comprises an anvil 11 (Fig. 3) at one end of a body 9, an inlet 27 (Fig. 2A) for pressure fluid at the other end of the body, a tubular member 13 extending from the inlet to a discharge duct 21 in the anvil, separate passages 22, 25 in the member communicating with the inlet and the discharge duct respectively, an inlet port 28 in the member communicating with the passage 22, a hammer piston 12 having a recess 45 forming valving means directing fluid from the port 28 to the opposite ends of the body, and a discharge port 29 in the member communicating with the discharge duct. The invention is adapted for "down-the-hole" drilling, the tool being mounted at the end of a rotatable string of drill pipe through which pressurized fluid (air) is supplied to the inlet 27 of the tool. Before the bit contacts the hole bottom the anvil which is rotatable with the tool body 9 drops so that its shoulder 65 is supported on body shoulder 66 to expose port 19a of the member 13. Fluid escaping from the port 28 in the member 13 passes through the recess 45, recesses 33, 34 in the member 13, and port 19a to discharge through the duct 21 and the bit, the hammer not reciprocating. When the bit rests on the bottom of the hole the anvil is positioned as shown in full lines (Fig. 3), the port 19a is closed, and fluid from port 28 is supplied below the hammer until it rises a distance when the shoulder 56 engages tube shoulder 36 to cut off air supply from port 28 to below the hammer, an exhaust port 14 in the body not being obstructed by the hammer. The fluid below the hammer expands and the hammer travels a distance B when an exhaust port 29 in the member 13 is opened, the hammer moving a further short distance under its inertia. After the port 14 is closed by the hammer, a hammer shoulder 55 passes a tube shoulder 37 so that fluid from the port 28 passes through recesses 45, 31, 32 to above the hammer, the supply of air continuing whilst the hammer travels a distance C when the port 28 is closed by the shoulder 56. The change above the hammer is compressed as the hammer moves a distance D and the hammer is returned under this compression until the port 28 is uncovered to supply more fluid during the part C of the hammer's travel. During the travel E the fluid at the top of the hammer expands until the shoulder 57 clears the port 14 and the space above the hammer is exhaust. Fluid is then supplied below the hammer to repeat the cycle. A port 26, or a separate duct, provides for a continuous by-pass of fluid for removing debris. In a modification the tubular member comprises a tubular structure with an outer sleeve-and the space above the hammer is connectable to a pressure chamber according to Specification 1,004,696.
Patent GB-288673-A (GB)
Title: Improvements in and relating to dyes and dyeing
IPC: C09B9/00
Filed: 1926-12-31
Abstract: 288,673. Harris, J. E. G., Wylam, B., Thomas, J., and Scottish Dyes, Ltd. Dec. 31, 1926. Leuco compounds of vat dyes, derivatives of.- Soluble products are obtained by treating vat dyes with pyrosulphuryl chloride in the presence of a metal and tertiary organic base; the products may be precipitated by water or extracted by alkalis; they are employed for dyeing and printing by impregnating textiles with solutions thereof and developing by hydrolysis and oxidation. According to examples, dimethoxydibenzanthrone is treated with pyrosulphuryl chloride, copper, and pyridine, with or without ethyl bromide, and the product extracted with sodium carbonate solution. Specifications 247,787 and 251,491 are referred to.
Patent GB-194389-A (GB)
Title: Improved means for use in machining two oppositely tapering surfaces of a work-pieceand in screw-threading such surfaces
IPC: B23G1/32
Filed: 1921-12-09
Abstract: 194,389. Richards Thread Milling Machine Co. (1918), Ltd., Burt, L. N., and Freeborn, J. E. Dec. 9, 1921. Lathes; milling-lathes ; gear-cutting. - Relates to lathes and consists in turning or boring and screwthreading, by means of a hob, two oppositely-tapered surfaces. The work is carried in a spindle being rotated by worm gear, the worm b of which is given a reciprocating movement by cams b<2>, b<3> on pinions, driven from the spindle a<2>, to minimize the production of facets on the thread. The hob-spindle e<2> is supported in a sleeve h<1> which carries the boring or turning tool h, and is capable of being held in two positions 180‹ apart to operate on the two tapered surfaces. The spindle and sleeve are carried by a cross-slide f movable or. a saddle f' which is traversed by rack-and-pinion gear driven from the machine-shaft a. The hob-spindle e<2> is driven by worm gear e, e from the shaft a. The cross slide is operated by a screw k<1>, Fig. 5, rotated by a hand-wheel o or by power gear provided with automatic disengaging means actuated when the tool has cut to the desired depth. The pinion l is driven from the machine-shaft a and carries a half-clutch which can engage with a second halfclutch on a spindle having a transverse pin n at its other end. When the pin n lies in a transverse slot n<1> in the hand-wheel movements of the latter are transmitted to the operating screw k<1> by the pin n and key k<2> and the cross slide is moved to the desired position. When the power feed is required, the spindle k is pulled outwards, by the knob k<3>, to engage the clutch and the spindle and screw are thus rotated by power through an angle determined by turning the graduated hand-wheel through the said angle and locking it by the set-screw o<1>. When the pin n has rotated into alinement with the slot n<1>, the spring shown disengages the clutch. Reversing means are provided for the withdrawal of the saddle and spindle e<2>.
Patent GB-912783-A (GB)
Title: Separation by crystallization
IPC: C07C7/14
Filed: 1961-09-15
Abstract: <PICT:0912783/III/1> A mixture of methylvinylpyridine and methylpyridine is cooled in chiller 2 so that the vinyl compound is partially frozen and is separated in centrifuge or decantation tank 4.  The process is repeated at a higher temperature on the melted partially separated vinyl pyridine and the resulting slurry is fractionally crystallized in apparatus 12 which is described in U.S.A. Re-issue 23,810 or Specification 807,100.  The mother liquor may then be fed back to the first freezing step.  The process is also applicable to the separation of para-xylene from xylenes and ethyl benzene.ALSO:A mixture of methylvinylpyridine and methylethylpyridine is cooled so as to concentrate the vinyl compound in the solid phase. The separated solid is melted and the process repeated. The resulting slurry is fractionally crystallised as in Specification 807,100 or U.S.A.  Reissue 23,810.  The mother liquor from this fractional crystallisation may be recycled to the first cooling stage of the process.  The crystallisation process is also applicable to the separation of para-xylene from xylenes and ethyl benzene.
Patent GB-1463230-A (GB)
Title: Composition for permanent magnets of the family -rare earths-transition metals- and process for producing such magnets
IPC: C22C19/07
Filed: 1975-08-08
Abstract: 1463230 Magnetic alloys AIMANTS UGIMAG SA 8 Aug 1975 [27 Aug 1974] 33150/75 Heading C7A A permanent magnet alloy produced by powder metallurgical techniques contains. and is produced by melting the Co and Ni in an alumina crucible, cooling and diffusing the Sm in the solid state. The alloy is commuted to powder, pressed in an orientating magnetic field into pellets with about 65% theoritical density. The pellets are coated with a protective powder of Sm 2 Co 17  and placed in a sintering tube which is evacuated during the heating period from ambient to 900C. After a short time at 900C, an inert gas, He, is admitted, and the pellets sintered at 1130C for one hour. After air cooling, the pellets are re-coated with Sm 2 Co 17  powder and annealed in an inert gas for about 10 hours at 800-1000C (preferably 900C) followed by tempering.
Patent GB-442315-A (GB)
Title: Improvements in or relating to the precipitation of gold or other metals from metallurgical cyanide solutions
IPC: C22B11/08
Filed: 1934-11-17
Abstract: In precipitating metals from cyanide solutions by means of a metallic precipitant such as zinc dust, the precipitation is effected with a substantially neutral solution free from dissolved oxygen and containing a salt which serves both as a solvent for the precipitant and also to maintain the solution at a substantially constant hydrogen ion concentration.  The salt may be a bisulphite such as sodium or calcium bisulphite.
Patent GB-1371874-A (GB)
Title: Silver halide photographic element
IPC: G03C1/89
Filed: 1972-07-14
Abstract: 1371874 Silver halide materials KONISHIROKU PHOTO INDUSTRY CO Ltd 14 July 1972 [15 July 1971] 33196/72 Heading G2C A photographic element comprises a support carrying on one side a silver halide emulsion layer and an additional outermost layer, this outermost layer and/or an outermost layer on the other side of the support consisting of or including as an antistatic agent a poly (ethylene oxide) adduct of a phenol-formaldehyde condensate. The condensate is preferably of formula in which R 1  and R 2  each represent H, halogen, nitro, carboxy, alkocarboxy, alkoxycarbonyl, optionally substituted alkyl, or alkoxy and m is 1 to 100. The anti-static agent may be in a protective, overcoat, anti-halation or anti-curling layer.
Patent GB-826992-A (GB)
Title: Improvements in and relating to magnetic networks
IPC: H03F9/04
Filed: 1956-10-31
Abstract: 826,992. Magnetic amplifiers. GENERAL ELECTRIC CO. Oct. 31, 1956 [Oct. 31, 1955], No. 33248/56. Class 40 (9). [Also in Group XXXV] In a magnetic amplifier for use in a voltage control system, cores 5, 7, each provided with a power winding 6, 8, are shunted by a capacitor 4 and connected in series with a linear inductor 3 to an A.C. supply V, the degree of energization of a control winding 11 determining the time position in each half-cycle of the supply at which one of the cores saturates so that the condenser discharges into a parallelconnected load 15. In one arrangement, Fig. 4, the power windings are associated with rectifiers 9, 10 and are connected in auto-self-excited parallel relationship. The circuit of Fig. 4 illustrates a voltage control system in which the amplifier is energized from winding section 28 of an auto-transformer 26 and its output is combined with the voltage across transformer winding section 27. After rectification and smoothing at 29, 30, the combined output is applied to a load 15 and also to a preamplifier 40, in a feedback loop, this amplifier being controlled by comparison of the load voltage in the winding 32 with a reference voltage Vr applied to a winding 38. The amplifier 40 operates in the same manner as the main amplifier and comprises a transformer 39 fed from the A.C. supply which has a centretapped secondary winding connected to both amplifier power windings 33, 34 by way of an output-developing condenser 37 and rectifiers 35, 36. In a modified circuit, Fig. 5, the preamplifier 40 is energized from a voltage stabilizer comprising a saturable transformer 43 the primary winding of which is connected to a condenser 42 and a linear inductor 41, as described in Specification 824,326, [Group XXXV]. A further arrangement is described, Fig. 6, in which the pre-amplifier 40 is energized from the combined output to the load instead of from a secondary winding on the voltage stabilizer 43. The main amplifier in this circuit is biased by application of the reference potential Vr to a winding 45, while a shunt resistor 46 across the main windings is provided to equalize the magnetizing currents of the amplifier and voltage stabilizer 43. An alternative form of main amplifier is shown in Fig. 7 in which the output voltage developed across the power windings is applied over a transformer 50 having a centre-tapped primary winding. In both the latter embodiments a single condenser 4 and a linear inductor 3 are connected directly across the supply voltage. Amplifier arrangements are also described in which a condenser 4, Fig. 2, is connected across the primary winding of a transformer supplying the amplifier power windings 6, 8 through a centre-tapped secondary, and in which the power windings, Fig. 3, are connected in series with a full-wave rectifier to a D.C. feed-back winding 21.
Patent GB-380657-A (GB)
Title: Improvements in or relating to electric power swtiches
IPC: H01H33/70
Filed: 1931-12-02
Abstract: 380,657. High tension switches. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Dec. 2, 1931, No. 33452. Convention date. Dec. 9, 1930. Addition to 379,804. [Class 38 (v).] In an " expansion " switch wherein the pressure developed by the arc in the expansion chamber 10 is conserved until it is adequate to lift the cover 12 of the chamber and thereby open a large peripheral passage to permit of rapid expansion as in the parent Specification, the cover has a large mass or is loaded with a large mass so that its return, on the reduction of pressure, is retarded and an adequate opening is ensured during at least one zero current passage. As shown, the cover 12 of the inner expansion chamber is of massive construction and is held down by springs 15. The mass of the cover and the strength of the springs are so chosen that, considered as a mechanical oscillating system, its oscillation period is approximately half that of a complete cycle of the A.C. system on which the switch is used. The Specification as open to inspection under Sect. 91 (3) (a) describes also a modification in which the cover is loose and in rising lifts (after lost-motion) the main cover 17 which is held down by springs. In this modification the mass of both covers comes into effect to prevent the premature re-closing of the expansion chamber before the arc is extinguished. This subject-matter does not appear in the Specification as accepted.
Patent GB-447662-A (GB)
Title: Improvements in or relating to capacity surfaces for electrostatic devices for the recording and reproduction of sound
IPC: H04R19/00
Filed: 1935-12-03
Abstract: 447,662. Microphones. MASSOLLE, J., and MASSOLLE GES., J., 405, Waldallee, Gross-Glienicke, Post Kaldow, Germany. Dec. 3, 1935, No. 33481. Convention date, Dec. 3, 1934. [Class 40 (iv)] In an electrostatic sound reproducing or recording device of the kind in which the movable diaphragm cooperates with a fixed grooved electrode B, the air damping is reduced by making the elemental capacity surfaces of the electrode of a width less than 1 mm., even as small as 0À1 mm., and by placing the intervening air gaps in communication with a larger air space. Conveniently, as shown in Fig. 2a, the electrode comprises a plate 1 having on one side a series of narrow shallow grooves 2 and at right-angles thereto on the other side a series of wider and deeper grooves 3, and a solid base plate 4 which bounds the air space and to which the plate 1 is united, e.g. by soldering. If desired, the base plate 4 may also be provided with grooves 5, as in the construction shown in Fig. 4, in which the narrow shallow grooves are produced by winding thin wire 6 over ribs 7 separated by deeper and wider grooves
Patent GB-370056-A (GB)
Title: Improvements in or relating to aircraft wings
IPC: B64C3/00
Filed: 1930-11-07
Abstract: 370,056. Aircraft wing structures. DORNIER-METALLBAUTEN GES. and DORNIER, C., Friedrichshafen-on-Bodensee, Germany. Nov. 7, 1930, No. 33565. Convention date, Dec. 17, 1929. [Class 4.] An aircraft wing comprises a stressed covering c which is attached to rigid profile members extending in the direction of flight and carried by latticework spars a.The profile members may be T-shaped as shown at d, Fig. 2, channel section as at e, or as a lattice beam i<1>. In the arrangement shown at f the covering is secured. by a superposed channel member g. In a further modification lattice-beam profile members are employed and the covering lies on their upper sides. Reference has been directed by the Comptroller to Specifications 157,953, 190,254, and 274,092, [all in Class 4, Aeronautics].
Patent GB-1159783-A (GB)
Title: Carpet and Floor-Scrubbing Machine.
IPC: A47L11/14
Filed: 1966-07-26
Abstract: 1,159,783. Carpet and floor cleaning machines. ADVANCE MACHINE CO. 26 July, 1966 [22 Oct., 1965], No. 33661/66. Heading A4F. In a carpet or floor scrubbing machine comprising a housing carrying a transverse rotary brush B driven by a motor M, lever mechanism connected to the handle arms 180, 182 (Fig. 1, not shown) of the machine is operable to cause an arm 80 to pivot members 118 and 120 (Fig. 3, not shown), rigidly secured thereto and carrying front ground engaging wheels 132 and 132<SP>1</SP> (Fig. 3, not shown), whereby moving said wheels relative to said housing and to rear ground engaging wheels 60 (Fig. 2, not shown) and 70. When the handle arms (180, 182) are moved to a substantially vertical position the brush B is raised as shown in Fig. 9, a lower handle portion 178 having by means of a linkage 166, 160, 158 (Fig. 7, not shown) rotated a sleeve 144 and thereby through a pin and slot connection rotated a shaft 136. A cam wheel 150 carried by the shaft 136 has been actuated thereby to pivot a cam bar 90 mounted on the arm 80 to rotate a shaft 74 having secured thereto the members 118 and (120) carrying the front wheels 132 and (132<SP>1</SP>). Means are provided for locking the handle arms in adjusted position, and also for adjusting the front wheels by adjustment of the cam wheel 150 to position the brush B in accordance with the type of carpet to be cleaned. The machine may also include foam generating means as described in Specification 1,159,784.
Patent GB-1097623-A (GB)
Title: Improvements in fluid-operated error sensing circuit
IPC: F15C1/14
Filed: 1965-08-06
Abstract: 1,097,623. Fluid-pressure servomotor systems; fluid amplifiers. GENERAL ELECTRIC CO. Aug. 6, 1965 [Sept. 23, 1964], No.33729/65. Headings G3H and G3P. A fluid-operated error sensing circuit comprises a fluid-mechanical sensor responsive to a plant variable which produces two pulsating output pressures whose frequencies are proportional to the value of the variable. The two outputs are fed to opposite sides of two resonant means each of which produce a pressure output proportional to the difference between the output frequency and the natural frequency of each means. The output signals of the two resonant means are supplied as control signals to a pure fluid amplifier which provides two output pressures whose difference is a measure of the deviation of the variable from a desired value which is represented by a frequency intermediate the natural frequencies of the two resonant means. The system may be used to control a steam inlet valve of a turbine in response to speed in which a shaft 33 is rotated at turbine speed and a plate 32 controls the outlets 27, 30 to produce a frequency in pipes 28, 31 responsive to the speed. The pipes 28, 31 are connected to opposite sides of blades 12, Figs. 3 and 4 (not shown) and when the frequency of the pressure differs from the natural frequency of the blades, the amplitude of the blade is decreased and thus the pressure in a receiver (39) opposite a pressure supply (38) is varied. The pressures in the two receivers (39) are fed to control channels (16), (17) of a fluid amplifier, Fig. 5 (not shown), which control the distribution of a power jet (52) between two outlets (61), (62).
Patent GB-930646-A (GB)
Title: Improvements in or relating to the construction of buildings and like structures
IPC: E04B1/35
Filed: 1959-09-24
Abstract: 930,646. Laminates. R. K. MATTHEWS. April 6, 1960 [Sept. 24, 1959], No. 33750/61. Divided out of 930,645. Class 140. Shelters and like structures are made by applying pliable sheet material 76, Fig. 6, for example felt, to a support 74, 75, itself supported by a removable inflatable core 72, and rigidifying the material by applying a cold-setting or other thermosetting or thermoplastic liquid resin, as by spraying. On removal of the core 72 the inner surface of the sheet material may be sprayed or coated with resin and/or a second sheet of material applied to the inner surface of the support 74, 75 and subsequently coated. The structure may stand on a concrete or other base 73. The support 74, 75 may comprise strips 74 of pliable material such as fibre-board, constituting ribs, and connecting strips 75 of similar material bent to U-shape and stapled to the ribs. The material 76 may be stapled to the edges of the strips 74, 75. To facilitate draping of the material 76 it may be formed with star-shaped apertures 69, Fig. 3, having secured therein pyramidal inserts 70, Fig. 4. Alternatively the apertures may be circular or square, with correspondingly shaped inserts.