baber/WOPTO huggingface dataset:
Patent GB-836542-A (GB)
Title: Improvements in the production of oriented shaped structures such as films and artificial filaments
IPC: B29C48/05
Filed: 1958-10-23
Abstract: Normally crystalline polyolefine films, filaments and like products are oriented by heatng the product to a temperature at least 10 DEG C. above the crystalline melting temperature of the polyolefine, cooling the product to a temperature below, but not more than 12 DEG C. below, the crystalline melting temperature and almost immediately stretching the product in at least one direction while maintaining its temperature between the crystalline melting temperature of the polyolefine and a temperature 12 DEG  C. below, preferably at a temperature 5-12 DEG  C. below, the crystalline melting temperature. The product may be formed by extrusion at a temperature at least 10 DEG  C. above the crystalline melting-point of the polyolefine, and may be kept at the extrusion temperature up to the time it is cooled to within 12 DEG  C. below the crystalline melting-point.  The crystalline melting-point is defined as the lowest temperature at which complete disappearance of the crystalline structure of the polymer is observed under a visible light microscope using polarized light when the crystalline product is heated at a rate of about 2 DEG C. per minute under the microscope.  Crystalline polyolefine is defined as a polyolefine which exhibits at least 10% crystallinity at room temperature as determined from X-ray diffraction patterns.  The method of carrying out the determination is described.  The polyolefine may be polyethylene, particularly high-density polyethylene, polypropylene, polystyrene, polyisopropylethylene or polyisobutylethylene.  The product is stretched by at least 1.5 times its initial length in the direction of stretch, and is then advantageously cooled, preferably to a temperature below 75 DEG  C., while maintaining sufficient tension on it to prevent shrinkage, the tension thereafter being released.  Films are preferably stretched in two mutually perpendicular directions, preferably simultaneously.  In an example, a film having a crystalline melting-point of 128 DEG  C. and formed by melt-extruding a polyethylene having, when annealed, a crystallinity of 87% and a density of 0.95, is heated to 138 DEG  C. and then cooled to 119 DEG  C., at which temperature it is stretched simultaneously at a ratio of 2.3 in the longitudinal direction and 2.2 in the transverse direction; finally, it is cooled to 50-60 DEG C. under sufficient tension to prevent shrinkage.  Films stretched as described above are improved with respect to durability, tensil strength, stiffness and transparency and are particularly suitable for packaging.  Specification 741,962 is referred to.
Patent GB-810629-A (GB)
Title: Improved tubeless tire
IPC: B60C15/06
Filed: 1956-11-08
Abstract: 810,629. Tubeless tyres. GOODRICH CO., B. F. Nov. 8, 1956 [Nov. 18, 1955], No. 34145/56. Class 144 (2). To obviate wicking of air along the cords of the chafer strip 18 of a tubeless tyre, the strip 18 is formed of a fabric of interconnected multifilament cords 22 arranged so that the cords extending transversely of the bead 14 have both ends terminating in the outer side wall 19 of the tyre. The fabric strip may be square woven as shown, coated on both sides with butyl rubber, and folded longitudinally with its edges 25, 26 staggered. The folded strip is built into the tyre bead with the folded edge 24 overlying and adhered to the radially inner edge of the butyl rubber inner lining 15 of the tyre, adjacent the bead toe, and the staggered edges 25, 26 extending radially outwardly along the axially outer bead face. During moulding of the tyre, circumferential sealing ribs are moulded in the rubber coating of the chafer strip forming the outer bead face. The cords 22 may comprise twisted continuous synthetic filaments such as nylon and the fabric may be of lino or weftless weave, and may be bias cut so that the transversely extending cords are disposed obliquely to the circumferential direction in different directions in the two portions of the folded strip.
Patent GB-181033-A (GB)
Title: An improved machine for expressing oil by hydraulic power from oil-seeds
IPC: B30B9/02
Filed: 1920-12-03
Abstract: 181,033. Dalley, R. Dec. 3,1920. Fatty oils, extracting by pressure. In an apparatus for cooking oil-seed and expressing the oil therefrom a charge of seed is cut off from the discharge shoot of the cooker by an horizontally reciprocating plate forming the upper side of a mould, the lower side of which is formed by a second plate which delivers the moulded cake to the press, whence it is ejected after pressing. The seed, after being crushed by rolls 3, is transported by a conveyer 4 and an elevator 5 to the cooker 6, which consists of a jacketed vessel containing a conveyer. The vessel 6 may be heated by steam or by combustion gases. In the latter case a chimney 13 is provided surrounded by a chamber 14, in which water is heated for conditioning the seed. From the vessel 6 the seed issues by a shoot 15 surrounded by a sleeve 9 reciprocated vertically by link-work, Fig. 5, and provided with an horizentally-reciprocating plate 16, which cuts off a charge of seed and moulds it against a plate 17, which then moves to carry the moulded cake to the press 19. It is there held in position by a pivoted catch 18, while the plate 17 returns. The cake is then compressed and removed by a leveroperated ejecting device. The plates 16, 17, catch 18 and the operating-valves of the press 20 are all operated by cams on a shaft 2. Paring blades and means for crushing the parings and returning them to the cooker are also provided.
Patent GB-1042046-A (GB)
Title: Waveguide mixers
IPC: H01P5/16
Filed: 1963-08-29
Abstract: 1,042,046. Waveguide mixers. VARIAN ASSOCIATES. Aug. 29, 1963 [Sept. 13, 1962], No. 34234/63. Heading H3F. A microwave mixer comprises a pair of axially aligned and perpendicularly disposed rectangular waveguide sections, 2, 3, Fig. 6, overlapping to form a region 1 of cruciform cross-section, and a pair of coaxial line connections communicating with the region 1, each containing a non-linear element, e.g. diodes 4<SP>1</SP>, 5<SP>1</SP>, for balanced excitation. A small resistor 19 and capacitor 21 leak the crystal current to earth, allowing external monitoring of the crystal current via the tag 20. Ridges, e.g. 23, Fig. 7 (not shown), at the ends of the input waveguides 2, 3, provide impedance transformation into the lower impedance junction region 1, and may extend, 23<SP>1</SP>, into the junction. Fine tuning is by a screw 24 extending into the waveguide 3 opposite the ridge 23, and by a screw 25 extending into the junction 1 opposite the output line 6.
Patent GB-344876-A (GB)
Title: Improvements in periodically controlled mechanism for advertisement and other purposes
IPC: G09F19/18
Filed: 1929-11-09
Abstract: 344,876. Changing signs. MARPLES, S. A., Norton, Walpole Avenue, Chipstead, Surrey. Nov. 9, 1929, No. 34258. [Class 3 (i).] Optical-projection apparatus.- Transparencies for optical-projection are mounted horizontally on a horizontal holder h rotated intermittently about a vertical shaft g, the projector beam passing from the source of light without deflection vertically through the transparencies, and being reflected by an inclined reflector q on to a screen s. A pivoted pawl t rests on the holder h and falls into registering slots therein at each stop. Two or more opticalprojectors may be combined with one holder, and a corresponding number of inclined reflectors and screens. In one arrangement four projectors are provided, and the screens form a pyramid with the apex removed. Fig. 5 depicts a holder in the form of a disc h having a curved annulus 15 about the transparency openings. Flexible transparencies are placed over the openings and are held in place by spring plates 17 having hooks 18 and clips 20. A secondary colour disc 24 may be pivoted to the disc h about a vertical spindle 25 to control the appearance &c. of the transparency immediately beneath, and a further colour disc 29 may be pivoted to an external frame 30. The disc 24 is intermittently rotated by pins 27 thereon striking a fixed abutment 28, and the disc 29 by an arm 33 on its spindle contacting with pins 32 on the disc h. The pawl t may have a stepped face 45, 46, Fig. 7, whereby the holder h is either retained in other than its central position, or is jerked forward after coming to rest. The pawl may form part of a switch whereby the projector lamp P is extinguished during movement of the holder. The holder h may be driven by gearing e, f or by an arm 54, Fig. 10, engaging notches 57 in the holder, the arm being pivoted to a crank-pin &c. 56 on the motor spindle 52. The transparencies may bear advertisements, messages, or pictures. The reflector q may be replaced by mirrors mounted on the holder h, one for each transparency.
Patent GB-359250-A (GB)
Title: Improvements in and relating to the treatment of metals
IPC: C09D5/08
Filed: 1930-11-15
Abstract: A protective coating is formed on metals, e.g. iron, steel or copper, by covering the surface at ordinary temperatures with a paint consisting of a metal, e.g. aluminium, in powdered or granular form mixed with a binding agent consisting of a solution in a volatile solvent of an alkyd resin, i.e. a condensation product of a polybasic acid and a polyhydric alcohol and then heating to volatilize the binder and to cause the metal to alloy with the foundation metal.  A binding agent is described consisting of the solution in a volatile solvent of the condensation product of glycerine and phthalic anhydride, preferably in equimolecular proportions.  Specification 337,682, [Class 82 (ii), Washing granular &c.], is referred to.
Patent GB-217611-A (GB)
Title: Improvements in the distillation of ammoniacal liquors
IPC: B01D3/00
Filed: 1922-12-18
Abstract: 217,611. South Metropolitan Gas Co., Parrish, P., and Weight, O. W. Dec. 18,1922. Ammonia, distilling.- Ammoniacal liquors are supplied by pipes G<1> to a number of stills A, through which the same body of steam, admitted by a pipe H<1>, is passed in succession, the steam being deprived of its content of ammonia by passage through saturators B arranged between each still. The liquors are then treated for the removal of fixed ammonia in a liming-chamber C and a still D receiving a separate supply of steam from a pipe H<2>. The hot waste liquors pass to a, feed-water heater; the steam from the last saturator is used for preheating the ammoniacal liquors.
Patent GB-663842-A (GB)
Title: A new or improved method of producing bi-metallic printing forms
IPC: B41N1/10
Filed: 1947-12-29
Abstract: 663,842. Printing-surfaces. ALLER, C. B. Dec. 29, 1947 [Sept. 9, 1946], No. 34548/47. Drawings to Specification: Class 100 (ii). A bimetallic intaglio, lithographic or relief printing plate comprising a base metal intended to form one surface component on which is deposited a continuous metal layer to form the other surface component, is prepared by applying and developing a copying layer, covering the exposed parts of the continuous layer with a metal resist, removing the remainder of the copying layer, etching through the parts of the continuous, layer not covered by the metal resist, and finally removing the metal resist. A plate having a copper, nickel, zinc or cadmium layer on a stainless steel, chromium, chromium alloy, chromium-plated or chromium-alloy plated copper, nickel &c. base may be coated with a chromate gelatine film which after exposure is developed in calcium chloride solution; the metal resist, e.g. iron, zinc or cadmium, may be applied electrolytically by a brush, rag &c. containing an electrode connected as anode with the plate as cathode (an aqueous ferric chloride solution may be used for an iron resist); the etching fluid with an iron resist may be chromic 'plus a little sulphuric acid, or with a zinc or cadmium resist, alkali metal sulphide or polysulphide. The metal resist may be removed with sulphuric acid. Specification 483,349 is referred to.
Patent GB-1022402-A (GB)
Title: Improvements in exhaust purifying systems for internal combustion engines
IPC: F01N3/22
Filed: 1962-09-10
Abstract: 1,022,402. Purifying exhaust gases; silencing. WALKER MANUFACTURING CO. Sept. 10, 1962, No. 34584/62. Heading FIB. In a catalytic exhaust gas purifier having a Venturi 49 drawing in secondary air, the flow of secondary air is silenced by a tuned silencing chamber 5 around the Venturi. The exhaust gases from pipe 1, mixed with secondary air in a Venturi injector 47, pass through a pipe 7 having one branch 11 leading to the interior of the catalyst bed 27 and a by-pass branch 13 leading to the space outside the catalyst bed, the branches being controlled by valves 55, 57, Fig. 2, (not shown) arranged on a common pivot 59 so that when one is closed the other is open. The secondary air enters through a pipe 43 delivering into silencing chamber 5 and flows through a cup-shaped tuned sleeve 53 to the entry ports 51. The valves 55, 57, are actuated by a suction actuated diaphragm 69, Fig. 2, connected by pipes 87, 91 to the intake manifold. Normally the manifold suction holds valves 55, 57, so that the by-pass 13 is closed and the exhaust gases flow through branch 11 and outwardly through the catalyst bed 27 to space 33 leading to the tail pipe 37. If the catalyst bed exceeds a predetermined temperature the temperature responsive device 101 opens an air bleed valve 107 to reduce the manifold suction in pipe 87 whereby the diaphragm 69 moves to the right to open valve 57 and close valve 55 so that the exhaust gases by-pass the catalyst bed until its temperature falls to an acceptable value when normal conditions are resumed. The movement of diaphragm 69 is clamped to avoid operation of the valves by transitory temperature changes.
Patent GB-605381-A (GB)
Title: Improvements in thermoplastic compositions
IPC: C08K5/098
Filed: 1945-12-20
Abstract: Thermoplastic compositions having a basis of cellulose acetate or other organic ester of cellulose and containing a plasticiser, are given an increased heat stability by incorporating therein an alkali metal salt, an ammonium salt, an alkaline-earth metal salt or a magnesium salt of an aliphatic hydroxy monocarboxylic acid. Specified hydroxy-mono-carboxylic acids are glycollic, gluconic and preferably lactic acid.  Specified plasticisers are triphenyl phosphate, tricresyl phosphate, mixed phenyl cresyl phosphates such as diphenyl monocresyl phosphate, methyl phthalyl ethyl glycollate, dimethyl, diethyl and dibutyl phthalate, dimethoxy ethyl phthalate, triacetin, tripropionin, dibutyl tartrate, phenyl salicylate and paratoluene ethyl sulphonamide.  In addition to cellulose acetate, the basis of the composition may comprise cellulose butyrate, propionate, acetate-butyrate and acetate-propionate.  The composition may be employed for moulding articles or for extruding filaments, sheets, films, tubes and rods at elevated temperatures or for casting films at normal atmospheric temperatures.  Numerous examples are given in which calcium lactate is incorporated in a cellulose acetate composition.  The Specification as open to inspection under Sect. 91 comprises also stabilised compositions having a basis of cellulose ethers. This subject-matter does not appear in the Specification as accepted.
Patent GB-1507032-A (GB)
Title: 2-thiol-4,5-diphenyloxazole s-derivatives
IPC: C07D263/46
Filed: 1974-08-06
Abstract: 1507032 4,5-Diphenyl-oxazoles SERONO LABORATORIES Inc 24 July 1975 [6 Aug 1974] 34673/74 Heading C2C Novel therapeutic compounds (I) (including salts thereof) wherein m is 0, 1 or 2, and R is hydroxy, alkoxy, amino, alkylamino, heterocyclic amino, aminoalkoxy, alkylaminoalkoxy or heterocyclic aminoalkoxy wherein the alkyl groups have from 1 to 4 carbon atoms and the heterocyclic amino rings have 5 or 6 ring members and are attached via the nitrogen atom, are made by standard methods.
Patent GB-487387-A (GB)
Title: Improvements in and relating to opaque cinematograph films
IPC: G03D15/00
Filed: 1936-12-17
Abstract: 487,387. Kinematograph picture films. DAMBLANC, L. Dec. 17, 1936, No. 34758. [Class 98 (ii)] Relates to a method of making opaque Kinematograph picture strips, wherein a number of rows of pictures are printed photo-mechanically side by side on a wide sheet and are sequentially arranged so that the picture series may be formed by slitting the sheet between the rows, and joining end to end the strips so obtained. According to the invention, the number of joining operations is reduced by printing side-byside rows of pictures (which may include type matter) on several wide sheets, the sequence of pictures being such that the picture series is formed by joining end to end the wide sheets, slitting the composite sheet so formed between the picture rows, and joining end to end the strips so obtained. The film may be provided with a sound track similarly printed. As shown, on each of three wide sheets A<1>, B<1>, C<1> as of paper are printed rows of pictures, as from a cylinder produced by applying a carbon transfer resist and etching, each row containing 10 pictures in sequence, and the rows following one another in the sequence indicated by the numbers 1 ... 36. The wide sheets are joined at the ends shown adjacent, the composite sheet so formed is slit between the picture rows into 12 strips, which are end-jointed in sequence to produce the picture series. The wide sheets may be the double sheets of a newspaper or journal. The individual sheets may be printed by several rollers applied in succession to a moving web. The backs of the wide sheets may be similarly printed so that the final strip bears a picture series on each side.
Patent GB-895036-A (GB)
Title: Improvements in and relating to the dispensing of two-component materials, for example of two-component lacquers
IPC: B05B7/32
Filed: 1960-10-11
Abstract: <PICT:0895036/III/1> In a plant for the dispensing of two-component materials, wherein the two components are supplied separately to a mixing- or atomizing appliance, a positive dosage pump is provided for each component, said dosage pumps being laid out in such a manner that their output at equal rotational speed corresponds to the mixing ratio desired and being driven through a slip-clutch, which slips when the quantity actually dispensed drops below the maximum quantity possible.  Electrical contacts may be connected to the adjustment member of the plant, e.g. a trigger, to switch off the motor when the quantity dispensed is completely throttled down.  As shown the plant may consist of reservoirs 2 and 3 connected by pipe lines 4 and 5 to positive dosage pumps 6 and 7, which are connected to a double-nozzled spray-gun 1 by pressure pipes 10 and 11 and are coupled together by shaft 8, which shaft is driven by a motor 15 through a slipclutch 9.  The spray gun 1 has a control trigger 12 which is connected to electrical contacts 13a and 13b acting through a relay unit 14 on the driving motor 15.  The pumps 6 and 7 are of great accuracy to give the desired ratio of the two components.  The double-nozzle spray gun 1 may be replaced by a mixing nozzle.
Patent GB-1568421-A (GB)
Title: Arrangement for use in measuring the number of rotations of a rotating device
IPC: G01F15/07
Filed: 1977-08-18
Abstract: Mounted on the axis (AC) of a flow meter which rotates at a speed proportional to the rate of flow is an interrupter (FB) with segments (FL) whose angular width and the angular width of their spacings are equal, and which are scanned by detectors (PW1, PW2, PW3). The latter are arranged with respect to the interrupter segments (FL) in such a way that upon rotation of the interrupter by, in each case, a specific angle, only a single detector signal occurs or vanishes. The detector signals are fed to a discriminator (ZSP1, ZSP2, VGL1, VGL2, VGL3, SP), in which the permissible changes to the combinations of the detector signals are stored. By comparing the detector signal combinations with the stored signal combinations, it establishes whether the detector signal combinations and their changes are permissible. Given a permissible change, it transmits a quantity pulse to a volumetric meter, while in the case of an impermissible change it transmits an error signal. Due to the fact that the combination of the detector signals and their change is monitored, a high security is achieved with respect to mismeasurements. <IMAGE>
Patent GB-1017780-A (GB)
Title: Cinematographic projection apparatus
IPC: G03B21/43
Filed: 1962-09-12
Abstract: 1,017,780. Positive clutches. A. V. L. C DEBRIE. Sept. 12, 1962 [Oct. 31, 1961] No. 34839/62. Heading F2C. [Also in Divisions G2-G3] A positive clutch for engaging a pinion 39 with a drive-shaft 11 comprises a spring-loaded lever 41 pivoted within shaft 11 which it drives by engaging grooves 40 inside pinion 39 freely slidable on shaft 11 and permanently coupled to a driving shaft. Angled lever 41 is disengaged when sleeve 47 is slid along shaft 11 by moving finger 50 in slot 52 formed in housing 53, external knob 35 being provided for this purpose.
Patent GB-1476770-A (GB)
Title: Acoustic surface wave device comprising arrays of parallel metallic strips
IPC: H03H9/25
Filed: 1974-08-07
Abstract: 1476770 Acoustic surface wave couplers THOMSON-CSF 7 Aug 1974 [7 Aug 1973] 34894/74 Heading H3U An acoustic surface wave coupler comprises two interconnected arrays 31,32 each comprising the same number N of parallel uniformly spaced conductive strips and having respective strip spacings p 1 , p 2  and strip widths a 1 , a 2 , at least one of p 2 , a 2  being different from p 1 , a 1  respectively. In an energy concentrator, Fig. 1, waves on a path 21 are transferred to a narrower path 22 which need not be parallel to path 21 and may be provided on the same or a separate substrate. Since strip lengths L 1  and L 2  are different, the capacity which each array 31, 32 introduces into the other is different, and thus the wave velocities in paths 21, 22 are different. Mathematical consideration is given of choosing p 1  and p 2  and the number N to achieve the desired energy transfer under these conditions. In the device of Fig. 3, output transducers 12, 13 respectively receive the sum and difference of the signals generated by input transducers 11, 14. In the modification of Fig. 4, paths 21, 22 are co-linear. A symmetrical transducer 40 and arrays 31, 32, interconnected by curved strips 33 together constitute a non-directional transducer arrangement, the whole emitted signal being received by transducer 12. In a further modification transducer 40 is omitted, arrays 31, 32 operate as a reflector and transducer 12 functions as an input and output transducer.
Patent GB-924975-A (GB)
Title: Improvements in air-blast electric circuit-breakers
IPC: H01H33/867
Filed: 1961-09-29
Abstract: 924,975. Air-blast switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Sept. 29, 1961 [Nov. 2, 1960], No. 35087/61. Class 38 (5). In an air-blast circuit-breaker in which the compressed air in a contact chamber drives the moving contact to an open position when a blast valve is opened and in which a plate carried by the moving contact engages the blast valve to reclose the valve during final opening movement of the contact, an enclosed space formed between the plate and valve on engagement thereof is connected to a separate air control pipe for communication with the open air of a compressed air supply. The circuit-breaker shown has a plate 13 and valve 5 forming an enclosed space 12 in the same manner as in the circuit-breaker disclosed in Specification 770,100, and a passage 14 in the valve 5 connects with a pipe 15 through sealing rings 16 which allow relative movement between the valve and pipe. To open the circuitbreaker pipe 8 is placed under pressure for sufficient time to open the valve 5 by means of its piston 6 and pipe 15 is at atmospheric pressure. In the circuit open position both pipes 8, 15 are at atmospheric pressure and closing is effected by applying compressed air to pipe 15. If the contacts close involuntarily owing to faulty sealing of the plate against the valve, the pressure in the pipe 15 increases and indicates the unwanted operation.