baber/WOPTO huggingface dataset:
Patent GB-393643-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/00
Filed: 1931-12-10
Abstract: 393,643. Chain stitching. BRITISH UNITED SHOE MACHINERY CO., Ltd. and RICKS, F., Union Works, Belgrave Road, Leicester. Dec. 10, 1931, No. 34230. [Class 112.] In sewing together the welt, upper, and insole of a shoe by a chain stitch seam, a curved hook-needle, a looper and a thread finger are employed, means being provided to move the looper towards and from the needle during each cycle of operations of the machine to carry the thread into the path of the thread finger and into the hook of the needle. The invention is illustrated as embodied in a machine such as described in Specification 13873/10, [Class 112, Sewing &c.], with a continuous work-feeding mechanism such as described in Specification 115,235, [Class 112, Sewing &c.]. The looper 4 is actuated to lay the thread in the needle hook by mechanism such as described in Specification 17328/08, [Class 112, Sewing &c.]. The looper is not fixed to the arms 6, however, but is formed on a bar 7 slidingly mounted in a guideway in the lower end of the arm 6. The bar 7 has a universal joint 8 connecting it to the link 9 connected to the arm 11 which is operated by the swinging of the channel guide 1. This arm 11 is pivoted on the head of a shaft 12 and is secured to an arm 14 of the cam lever 15 which carries a cam roll 18 working in a groove in the cams 19. By this means, the looper is moved up and down in synchronism with the needle. The cam arm 21 which turns the channel guide towards and away from the work carries a cam roll 22. This causes the looper to dip substantially in the direction of the length of the needle during each cycle of the machine, from its unusually elevated position, so that it can by means of the mechanism of Specification 17328/08, [Class 112, Sewing &c.], lay the thread in the needle hook. As the needle moves back to draw its thread loop through the work, the looper is swung to the left and is raised from its dipped position so that the thread finger 5 can take its bight of thread, Fig. 2.
Patent GB-937889-A (GB)
Title: Process for preparing continuous phase silica gel catalyst for preparation of alkynols
IPC: C07C29/42
Filed: 1961-09-25
Abstract: In the preparation of a catalyst useful for making alkynols from carbonyl compounds and acetylene hydrocarbons, a carrier consisting of continuous phase silica gel having a surface area of from 300-340 sq. m./gm. is impregnated with a HNO3 solution of Bi(NO3)35H2O containing from 2-9% of Bi, the carrier is heated to 95 DEG -150 DEG C. to remove HNO3 and then fired at 450 DEG -500 DEG C. for 2-3 hours before reimpregnating with a HNO3 solution of Cu(NO3)2, repeating the heating and firing stages as above followed by further firing at 500 DEG -700 DEG C. for 2-100 hours so as to yield a catalyst having an average copper content of from 10-20%, 16-25% of copper being found adjacent the catalyst surface.  In a modification the carrier has a surface area up to 350 sq. m./gm., the further firing is effected at 500 DEG C. for 2 1/2 hours and at 600 DEG C. for a further 2 1/2 hours such that the catalyst has a uniform copper content of from 14-20% adjacent its surface. Specifications 807,581, 937,887, 937,888 and U.S.A. Specifications 2,300,969 and 2,768,215 are referred to.ALSO:In the preparation of alkynols from carbonyl compounds and acetylene hydrocarbons, a carrier is used consisting of silica gel having a surface area of from 300-400 sq. m./gm. which is impregnated with HNO3 solution of Bi(NO3)3.5H2O containing 2-9% Bi, heated to 95-150 DEG C. to remove HNO3 and then fired at 450-500 DEG C. for 2-3 hours before reimpregnating with a HNO3 solution of Cu(NO3)2, repeating the heating and firing stages as above followed by further firing at 800-700 DEG C. for 2-100 hours so as to yield a catalyst having an average copper content of from 10-20%, 16-25% of the copper being found adjacent the catalyst surface.  In an example the conversion of acetylene and formaldehyde to propynol and butynediol is described. Specifications 807,581, 937,887, 937,888 and U.S.A. Specifications 2,300,969 and 2,768,215 are referred to.
Patent GB-1317505-A (GB)
Title: Apparatus for treating leather
IPC: C14B1/00
Filed: 1971-07-21
Abstract: 1317505 Rotary-drum apparatus KONINKLIJKE CHROOMLEDERFABRIEK "DE AMSTEL" NV 21 July 1971 [21 July 1970] 34271/71 Heading C6C [Also in Division D1] Apparatus for processing hides comprises a stationary outer drum 7 and a rotatable inner drum 1 which has perforations in its cylindrical surface and is divided into sector-shaped compartments by perforated partitions 2a, 2b, 2c whereby hides are lifted out of and plunged back into the processing liquid as the inner drum rotates The inner drum is driven through a belt transmission (not shown) by an electric motor, and a separate motor is provided whereby the inner drum may be turned to bring a door 5 in each compartment into alignment with a door 10 in the outer drum for loading and unloading. Processing liquids are introduced to the space 8 between the drums by conduits 12, 13, and liquid is drained through a valve 31. Temperature, pH value and level &c. of the processing liquid may be monitored and controlled. A gauge glass 18 mounted on a tank 17 connected by means 15, 16 to the drums indicates liquid level.
Patent GB-823802-A (GB)
Title: Improvements in or relating to compactors
IPC: E02D3/074
Filed: 1956-11-09
Abstract: 823,802. Percussive tools. CROUCHER, A. H., and COMPACTORS ENGINEERING Ltd. Oct. 30, 1957 [Nov. 9, 1956], No. 34335/56. Addition to 730,592. Class 124. A compactor of the type described and claimed in the parent Specification having paired eccentric weights which may be adjusted to make the compactor self propelled in either direction, is provided with means for the rapid adjustment of the reciprocating force while the compactor is in use. As shown, eccentric weights 8, 9 are mounted for rotation in a box 10 which may be rotated bodily by means of a chain 11 passing over a sprocket 10a on the box and a fixed guide 12, the ends of the chain being secured to a radius arm 13a attached to the handle 13 of the compactor. The angle the reciprocating force makes with the vertical depends on the angle the handle makes with the vertical and, since the arc of the chain on the outside of the guide is greater, e.g. 2¢ times greater, than the arc of the sprocket 10a, a small movement of the handle results in a large movement of the reciprocating force, and movement of the handle from one side of the vertical centre line to the other will produce a reversal of the direction of travel of the compactor.
Patent GB-775093-A (GB)
Title: Improvements in cords
Inventor: VAUGHAN GEORGE
IPC: A63B51/02
Filed: 1953-12-10
Abstract: 775,093. Cords. DUNLOP RUBBER CO., Ltd. Nov. 19, 1954 [Dec. 10, 1953; July 5, 1954], Nos. 34356/53 and 19578/54. Class 109. (Also in Group IX] A method of making a cord suitable for stringing tennis &c. rackets, comprises coating a core of textile material A made of a synthetic long-chain polymer, e.g. nylon or ethylene glycol terephthalate, with an adhesive containing alcohol-soluble nylon and a high concentration of phenol, e.g. by passing the core through a bath 3 of the same, and helically winding there' on one or more layers of a textile material made of a synthetic long-chain polymer, e.g. nylon or ethylene glycol terephthalate, furnished from bobbins 4. The wrapped core D is wiped at 5, to remove surplus bonding solution, dried at 8, 9 by electric heaters and wound up at 7. The core may be a nylon monofilament 0.042 inches in diameter and the wrappings B, C of 0.005 inch diameter monofilament nylon yarns comprising 23 to 25 ends respectively, wrapped in opposite directions. The adhesive may also contain an isocyanate. Reference has been directed by the Comptroller to Specification 732,535.
Patent GB-366173-A (GB)
Title: Improvements in containers for growing plants
IPC: A47G7/08
Filed: 1930-11-15
Abstract: 366,173. Receptacles for r growing plants. BARRETT, M. R. C., BARRETT, J. B., Broad Street, and WALKER, R. R., St. David's Street, both in Presteign, Radnorshire. Nov. 15, 1930, No. 34416. [Class 6 (ii).] A container for a plant growing in a pot e comprises a body or shell a of cylindrical, frusto-conical or like outline, open at the bottom, a base b of saucer or like outline, and means on the base, such as blocks c, for supporting the shell and the pot clear of the bottom surface, an annular space d being left between the free edge of the base and the shell for free circulation of air to the bottom of the pot. Three wooden blocks c may be provided spaced at 120‹ apart and shaped to fit on the base, their upper surfaces being set at a level lower than the free edge of the base. Alternatively, projections of equivalent form may be moulded integrally with the base. The shell and base may be moulded in wood pulp and like material and treated with cellulose lacquer.
Patent GB-788964-A (GB)
Title: Improvements in or relating to siloxane compositions and elastomers
IPC: C08L83/04
Filed: 1955-12-01
Abstract: A heat-hardenable polysiloxane composition comprises by weight (1) 100 parts of a diorganopolysiloxane gum; (2) from 10 to 35 parts of a liquid copolymer having a viscosity of less than 1,000,000 cs. at 25 DEG  C. and being composed of from 20 to 60 mol. per cent of dimethylsiloxane, from 30 to 60 mol. per cent of phenylmethylsiloxane, from 5 to 15 mol. per cent of siloxane units of the general formula RnViSiO <FORM:0788964/IV (a)/1> in which R is an alkyl or phenyl radical, Vi is a vinyl radical, and n is 0 or 1, and from 0.0003 to 35 mol. per cent of siloxane units of the general formula RMe2SiO0.5, in which R has the above meaning, and (3) an organic peroxide as vulcanizing agent.  Copolymer (2) is either a copolymer of all four of the siloxanes defined above or a mixture of copolymers, such mixture containing all four of the defined siloxane units.  The siloxane gum (1) may have silicon bonded aliphatic, aromatic or halogenated hydrocarbon radicals.  Vulcanizing agents specified are benzoyl, dichlorobenzoyl and monochlorobenzoyl peroxides and t-butylperbenzoate.  The compositions may also contain fillers such as titania, zinc oxide, ferric oxide, diatomaceous earth, crushed quartz, silica aerogels, fume silicas and silica xerogels (if desired, the fillers may be treated with hydrolysable silanes) and other known additives.  The compositions may be compounded in conventional manner, but advantageously by compounding (1) and (2), and, if desired, the filler, and heating the mixture for a few hours at 150 DEG  to 250 DEG  C. prior to adding (3) and curing. Examples are given.  The elastomers are useful for sealing purposes and for electrical insulation.
Patent GB-1320801-A (GB)
Title: Tread ring for a tyre of the replaceable tread type
IPC: B60C11/02
Filed: 1970-07-16
Abstract: 1320801 Replaceable tread tyres INDUSTRIE PIRELLI SpA 16 July 1970 [29 July 1969 13 March 1970] 34503/70 Heading B7C A replaceable tread ring for a tyre comprises a circumferentially inextensible cincture layer 3 formed by a helically wound metal cord whose convolutions are substantially parallel to the midcircumferential plane of the ring, two symmetrically cross-laid layers 4, 5 each of parallel metal cords disposed radially inwards of the cincture and one layer 6 of extensible parallel metal cords disposed radially outwards of the cincture, the cord angle of each of the two layers 4, 5 being in the range 25-65 degrees and both layers 4, 5 having a width L<SP>1</SP> axially of the tread at least equal to that L of the cincture 3, and the axial width L<SP>11</SP> of the layer 6 being between 40% L and L. In the preferred embodiment the cincture comprises a cord, diameter 2À7 mm. made up of seven cords each formed by seven strands each of three wires 0À15 mm. diameter and has an axial width L of 205 mm., while the layers 4, 5 each have a width L<SP>1</SP> of 210 mm. and are cross-laid with the cords inclined to said plane at 20 degrees, each cord having a diameter of 0À9 mm. comprising seven strands each of three wires 0À15 mm. diameter. The layer 6, of axial width L<SP>11</SP> of 165 mm. is laid with its cords parallel to those of layer 4, and the cords each have a diameter of 1À1 mm. and are made up of three strands each of seven wires 0À175 mm. diameter with the wires forming the strands being twisted in the same sense as the strands forming the cord to provide the extensibility of the cords whose apparent modulus of elasticity is 2200 kg./mm.<SP>2</SP>.
Patent GB-775905-A (GB)
Title: An improved flame shield for inflammable or explosive fluids
Inventor: SECONDI AMILCARE
IPC: A62C4/02
Filed: 1954-11-29
Abstract: 775,905. Preventing damage from back firing. S.A.S. SOC. APPLICAZIONI SECONDITE. Nov. 29, 1954, No. 34590/54. Class 7 (3). [Also in Groups XXI and XXIX] A flame-trap comprises plain or processed rice husks 8 loosely packed between two perforated plates 5, 6 and is arranged in the inlet pipe of an I.C. engine.
Patent GB-1352587-A (GB)
Title: Television camera or storage tubes
IPC: H01J29/02
Filed: 1971-07-23
Abstract: 1352587 Cathode-ray tubes SIEMENS AG 23 July 1971 [30 July 1970] 34613/71 Heading H1D In a camera or a storage tube the target 6 is separated from the faceplate 3 by a metal frame 4 which is bonded between the faceplate and the flared end 2 of glass tube 1. The target is preferably clamped in an annular recess 5 by a metal ring 7 and a spring ring 8. Apertures 9 in the frame 4 allow evacuation of gas between the target and faceplate. The members 1, 3 and 4 may be bonded together by high frequency heating prior to the insertion of the target, which may be of the multi-diode type.
Patent GB-836532-A (GB)
Title: Circuit arrangement for electric discharge lamps operated from a polyphase network
IPC: H05B41/391
Filed: 1958-10-29
Abstract: 836,532. Discharge lamp circuits. ALLMANNA SVENSKA ELEKTRISKA A.B. Oct. 29, 1958 [Nov. 8, 1957], No. 34621/58. Class 38 (4). In a circuit for simultaneously controlling the light output from a plurality of lamps fed from a polyphase supply, the number of lamps corresponding to the num. ber of phases, the lamps 4-6 are connected at one end to the supply 1-3 through reactors 7-9 and at the other ends to the mid points of a bridge-connected rectifier 10-12, across the D.C. terminals of which is connected a variable resistor 16 which controls the lamp current. If the rectifiers pass sufficient leakage current and so prevent the lamps from being extinguished, shunt resistors 22-24 may be connected across the lamps. Resistor 16 may be replaced by a controllable pentode valve. The lamp heaters are fed from separate secondary windings on a common transformer 20, 21.
Patent GB-963445-A (GB)
Title: Improvements in gear pumps
IPC: F04C2/14
Filed: 1961-09-27
Abstract: 963,445. Gear pumps. G. DUSTERLOH FABRIK FUR BERGWERKSBEDARF G.m.b.H. Sept. 27, 1961 [Oct. 3, 1960], No. 34647/61. Heading F1F. A gear pump has the inside of the wall of the gear casing surrounding the gear wheels spaced at 8 from the tips of the teeth of the gear wheels over the major part of their periphery and resting against the tips of the teeth only over a zone covering two or three teeth of each gear wheel adjacent the pressure side of the pump. A counter force to that exerted on the shafts 4, 5 of the gear-wheels by the working fluid is preferably applied through ducts 12, 13 from the pressure side of the pump, which open into pressure chambers 14, 15 respectively and are sealed by rings 18, 19 respectively. End bushes (Fig. 2 not shown) are pressed against bearing bushes of the shafts 4, 5 by pressure medium drawn off from the pressure side of the pump and applied to the outer surfaces of the end bushes.
Patent GB-1188217-A (GB)
Title: Process for preparing Lactam Hydrochloride and a Free Base thereof
IPC: C07D201/04
Filed: 1967-07-27
Abstract: 1,188,217. Lactam. TOYO RAYON K.K. 27 July, 1967 [28 July, 1966], No. 34659/67. Heading C2C. A lactam hydrochloride is prepared by reacting a cycloalkanone oxime, having 5-13 C atoms, or its hydrochloride with hydrogen chloride in an aliphatic carboxylic acid solvent at a temperature of 50-130‹ C. in the presence of, as catalyst, a cyano compound of the general formula R-CN, where R is H, an alkali metal, alkaline earth metal; alkyl radical, phenyl radical, aralkyl radical or halogen, or a cyanotype ion-exchange resin. The aliphatic carboxylic acid is preferably acetic acid and the cyano compound is advantageously HCN or acetonitrile. The examples describe the conversion of cyclopentanone oxime into piperidone and cyclohexanone into caprolactam. The free lactam may be obtained by heating the hydrochloride in an inert solvent within the range 50‹ C. to the melting point of the lactam.
Patent GB-1315354-A (GB)
Title: Corrosion-resistant metal structure
IPC: B23K20/227
Filed: 1970-07-17
Abstract: 1315354 Making composites TEXAS INSTRUMENTS Inc 17 July 1970 [30 July 1969] 34773/70 Heading B3A [Also in Division El and F2] A corrosion resistant metallic composite comprises a base layer 10 having at least one surface bonded to a thinner laminate 12 which comprises at least one metal layer 18 positioned between at least two thinner metal layers 14, 16 having a greater nobility. The thickness of the laminate 12 may be 5% of the total thickness of the composite and the thickness of the layers 14, 16 may be 5-20% of the thickness of the laminate 12. One or more of such laminates 12 may be bonded to one or both sides of a base layer 10. In a structure having laminates 12 bonded to both sides of a base 10 (Fig. 3, not shown), the base 10 has a thickness of 0À0123- 0-0129 or 0À0127-0À0134 inch, the protective layers 14, 16 a thickness of 0À000048-0À000216 or 0À000024-0À000112 inch and the intermediate layer 18 a thickness of 0À000560- 0-000896 or 0À000704-0À001264 inch. The base 10 may be of low carbon steel, the protective layers 14, 16 of copper, stainless steel, 90/10 brass or 85/15 brass and the intermediate layer 18 of low carbon steel, zinc, manganese or 75/25 brass. The composite may be deformed into a heater tank or radiator. The composite may alternatively be a bar or tube of circular or rectangular cross-section.
Patent GB-783712-A (GB)
Title: Alkaline earth metal silicates
IPC: C08K3/34
Filed: 1954-12-01
Abstract: <PICT:0783712/III/1> Alkaline earth metal silicates having a surface area of at least 89 m.2/g. and an average particle size of 300   or less are obtained by reacting solutions of an alkali metal silicate and an alkaline earth metal chloride under vigorous stirring with shearing stresses above 100 per second, by means of a stirring device arranged in a reaction vessel filled with an aqueous medium comprising the resultant alkaline earth metal silicate which is continually sucked into said device.  The surface area is that of the ultimate particles determined by a specified method.  The desired reaction conditions may be obtained in colloid mills and high-speed mixers, for example in a "Kotthoff" mill in which a rotor rotating at, e.g., 2800 r.p.m., imparts a high tangential velocity to the reaction material and a stator which preferably closely surrounds the rotor suddenly deflects it into a radial direction.  Preferably one, or in the case of continuous processes both, reactants are fed to the central part of the stirrer.  It is preferred to use sodium silicate in which the Na2O/SiO2 ratio is from 1/3 to 1/4, generally 1/3.3, in 0.1-0.7 molar concentration with respect to Na2O, and to produce the calcium silicate which corresponds approximately in formula (e.g. CaO(SiO2)3.3.nH2O) to the sodium silicate in a 0.05-0.4, preferably 0.2-0.3 molar concentration.  A higher concentration of sodium silicate may, however, be used (e.g. 1.7 mols. Na2O per litre) provided the calcium chloride is diluted so that the precipitate will still flow.  Increasing the ratio of sodium silicate to calcium chloride and increasing the Na2O/SiO2 ratio in the silicate, increases the particle size, and finest particles are obtained if the concentration of the reaction solutions are such as to produce a final mixture which is just flowable: 0.4 molar reactant solutions are suitable for discontinuous operation.  Lower viscosities may be achieved by means of a sodium chloride-containing solution of calcium chloride.  The examples describe both continuous and discontinuous processes using a Kotthoff mill, the calcium silicate being subsequently filtered, dried at 110 DEG  or 120 DEG  F. and ground in a high-speed pin-mill.  In one case it has a particle size below 250 .
Patent GB-766401-A (GB)
Title: Improvements in or relating to detergent compositions
IPC: C11D3/34
Filed: 1954-12-03
Abstract: 766,401. Soap compositions. UNILEVER, Ltd. Dec. 3, 1954 [Dec. 8, 1953], No. 35043/54. Addition to 741,454. Class 91 [Also in Group VI] A germicidal soap composition which is substantially alkali-free contains, in addition to soap, (a) a minor proportion of a thiuram disulphide of the formula Z 1 NC(S)SSC(S)NZ 2  where Z 1  and Z 2  each are either two separate monovalent saturated or unsaturated alkyl groups each having desirably one to four, and preferably one or two, carbon atoms, or else a single bivalent cycloaliphaticradical, and (b) a stabilizing compound for the thiuram disulphide such as a percompound or a quadrivalent tin or lead compound. These stabilizers are usually present in amounts of 0.05-5.0 per cent ormore but preferably 0.05-2.0 per cent. Thethiuram disulphide is desirably present to an extent of 0.1-5.0, preferably 0.2-2.0 per cent, and a preferred compound is N-tetramethyl thiuram disulphide. Suitable percompounds are those which yield hydrogen. peroxide in alkaline solution, such as sodium, pyrophosphate peroxide, sodium persulphate, sodium perborate and sodium percarbonate; lauroyl peroxide is also suitable. Stannic chloride is preferred as the source of quadrivalent tin, but other stannic salts, basic stannic salts and ortho- and meta-stannic acids and their salts may also be used. If per-compounds are used it is necessary to add an alkali-neutralizing agent to the composition, such as sodium bicarbonate or an inorganic or organic acid such as boric acid or a long- or short-chain aliphatic acid, particularly the free acid from which the soap is formed. In addition synthetic anionic ornon-ionic detergents, a number of which are specified, may be present, as may such. other germicides as the 2, 2<SP>1</SP>-dihydroxy halongenated diphenylmethanes.
Patent GB-1207406-A (GB)
Title: Internal combustion engine starter mechanism
Inventor: LLEWELLYN LEOPOLD WILLIAM
IPC: F02N3/02
Filed: 1968-07-23
Abstract: 1,207,406. Engine starter mechanism.. KAL-PAC ENG,Ltd. July 23, 1969 [July 23, 1968], No.3.508.1/68. Heading. F1K. The invention relates to a starter mechanism 10 for an internal-combustion engine 40 having a crank-shaft and speed reduction means driving a hollow power output shaft 11 at a speed less than that of the crank-shaft. The starter has a starter pinion shaft 18 concentrically journalled in the hollow output shaft and slidable axially thereof, the starter shaft having a starter pinion 19 at one end and a starter drive means 21 at an opposite end. The pinion has teeth with bevels formed on the non- driving faces thereof. A starter ring gear has internal teeth adapted for meshing engagement with the teeth of the pinion and is mounted on and concentric with a take-off pinion of the speed reduction means, to rotate therewith. The mechanism is constructed and arranged for the starter drive means to be slidable axially inwards against a spring 25 for meshing engagement of the starter pinion 19 and the starter ring gear so that rotation of the starter drive means rotates the crank-shaft with meshing engagement being maintained by force between driving faces of the teeth. When the engine starts the ring gear momentarily drives the starter pinion. Reactions of the ring gear teeth and the bevels of the starter pinion teeth then effect disengagement.