baber/WOPTO huggingface dataset:
Patent GB-118878-A (GB)
Title: Improvements in and relating to Electrical Resistances.
Inventor: ROSS FREDERICK ALEXANDER
IPC: H01C7/04
Filed: 1917-09-07
Abstract: 118,878. Ross, F. A. Sept. 7, 1917. Resistances, granular. Iron oxide in the form of scale from rolling-mills is held under pressure between concentric metal tubes and insulating end rings. In the double unit shown, two pairs of end rings b are held between spring washers e and nuts f on screwed iron tubes c separated by an insulating-washer g within a single iron tube a, the tubes c forming the terminals. According to the Provisional Specification, the radiating-surface may be increased by providing vanes on the outer tube or additional tubes through the end rings and resistance material.
Patent GB-405602-A (GB)
Title: Process for the manufacture of mats, floor coverings or the like of animal or vegetable fibres
IPC: D06N3/00
Filed: 1932-05-04
Abstract: 405,602. Fabrics composed of agglutinated fibres. GOTTLIEB, G., 9, Hauptstrasse, Erlaa, near Vienna. May 4, 1932, No. 12905. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 9, 1932]. [Class 140.] Mats, floor coverings, carpets, &c. are made by impregnating a hairy or fibrous material of the desired shape with a rubber solution after which the article may be vulcanised and the surfaces are coated with lacs of different colours to produce any required design or a single coloured coating may be applied. A patterned design may be obtained by securing differently coloured portions together by adhesives or by sewing. The article may be made of varying degrees of hardness by compressing before vulcanizing.
Patent GB-455975-A (GB)
Title: Improvements in or relating to compositions containing synthetic resins
IPC: C08L67/00
Filed: 1935-04-30
Abstract: A resinous composition comprises a phenolaldehyde or alkyd resin together with a neutral ester of a monohydric phenol with a dicarboxylic acid.  Specified esters are those derived on the one hand from phenol or an alkyl, aryl, aralkyl or chloro derivative thereof, and on the other from phthalic, succinic, fumaric and maleic acids.  Preferably, 100 parts by weight of the resin are used in admixture with 10--40 parts of the ester, and the ingredients melted together.  The phenol-aldehyde resins may be prepared from phenol, cresols, xylenols, phenylphenols, benzylphenols and the higher alkylphenols such as butyl-, dibutyl-, amyl- and octyl-phenol, using formaldehyde, acetaldehyde or furfuraldehyde as the aldehyde component; modifying agents such as rosin may have been employed in their manufacture.  The alkyd resins, e.g. that from glycerol and phthalic acid, may also have been modified with rosin or the higher fatty acids.  Fillers, accelerators, colouring matters and additional plasticizers may be added to the composition.  For use as a varnish, a drying oil and solvent may be present.  Examples are given of compositions consisting of: (1) glycerol-phthalic anhydride resin and diphenylphthalate; (2) phenolformaldehyde resin and dicresyl phthalate, or a mixture thereof with diphenyl phthalate; di(trichlorphenyl)phthalate may also be used; (3) phenol-aldehyde resin and esters prepared from phthalic acid or succinic acid and p various cresylic acids.  The compositions are useful for the manufacture of films and sheets, and for coating, moulding and impregnating purposes.  British Specifications 295,335, [Class 95], 369,945, 455,974 and 455,976 and U.S.A. Specifications 1,899,919 and 1,939,217 are referred to.  Phenol esters.--The preparation of cresyl phthalates from 1 mol. of phthalyl chloride and 2 mols. of various cresylic acids is described; also the production in analogous manner of cresyl phenyl phthalate, cresyl succinate, di-(p.tert-butylphenyl)-phthalate, di-(o- and p-benzylphenyl) - phthalates, di - (o - phenyl phenyl) - phthalate, and similar esters derived from amylphenol and octylphenol.  The esters may be purified by treatment with dilute aqueous alkali permanganate. U.S.A. Specification 1,905,974 is referred to.  The Specification as open to inspection under Sect. 91 describes also the use of phenolic esters of benzoic acid and specifies phenyl, cresyl, monochlorphenyl and trichlorphenyl benzoates. This subject-matter does not appear in the Specification as accepted.
Patent GB-836695-A (GB)
Title: Thermosettable epoxide resin compositions
Inventor: BISHOP ROY REGINALD
IPC: C08G59/50
Filed: 1955-05-04
Abstract: Epoxide resins, i.e. glycidyl ethers formed by reaction of a polyhydric aliphatic or aromatic compound with a compound having a glycidyl radical or a compound yielding a glycidyl radical under the reaction conditions, are cured in presence of a polyamine metallic salt coordination complex which is unstable at temperatures from 60 DEG  to 200 DEG  C.  Co-ordination compounds of zinc and cadmium halides with ethylene diamine or diethylene triamine are specified the complex being formed by adding a saturated solution of the metal salt at 90 DEG  C. to excess of a 50% aqueous solution of the polyamine.  On standing and cooling a crystalline co-ordination complex is deposited.  In examples, an epoxide resin of molecular weight 400, epoxy equivalent 0.5 g. per 100 gs. resin was mixed with (a) zinc bromide-diethylene-triamine complex, cadmium bromidediethylene triamine complex, and (c) cadmium bromide-ethylene diamine complex.  These mixtures were heated in an oil bath to 150 DEG  C. and cured in (a) 15 mins., (b) 4 mins., (c) less than 1 min. Compositions containing the complexes are stable for months at temperatures below 40 DEG  C.
Patent GB-289888-A (GB)
Title: Improvements in or relating to diaphragms more particularly for loud-speakers and the like
IPC: H04R9/04
Filed: 1928-05-02
Abstract: 289,888. Siemens & Halske Akt.-Ges. May 6, 1927, [Convention date]. Addition to 287,065. Diaphagms. -The current is conducted to a conductor g, k mounted on the surface of an electrodynamically driven diaphragm of the kind described in the parent Specification wherein rigid surfaces are hingedly connected together and to a supporting frame through the diaphragm itself or conductor fixed on the surface of the diaphragm. As shown a strip of material e, f, such as rubber insulates the two halves of the diaphragm (shown diagrammatically) and current is led into and out of the conductor g, k, in the direction of the arrows through the lateral edges of the diaphragm. The conductor is insulated from the diaphragm except at the ends where connection is made preferably by spot welding. In a modification current may be led into the diaphragm at one or more points or wholly along one side of the diaphragm and similarly led away from the diaphragm at the opposite side. The Specification as open to inspection under Sect. 91 (3) (a) states that the diaphragm may be made V-shaped by folding or forming two rigid surfaces. This subject-matter does not appear in the Specification as accepted.
Patent GB-413098-A (GB)
Title: Improvements in and relating to the production of colouring bodies and pigments
IPC: C09B57/10
Filed: 1933-05-03
Abstract: Pigments comprising cadmium and/or zinc sulphide are obtained from an aqueous solution of a cadmium and/or zinc salt by treatment of the solution with an organic sulphur compound such as a xanthogenate, thiocarbamide, mustard oils (allyl iso-thiocyanates), or thiocarbanilides.  The sulphur compound may be added as such or as a reaction mixture yielding it.  By associating the metal salt solution with a viscose solution a metal suphide-cellulose complex is obtained.  The reaction may take place in an alkaline medium in which case the metal oxide may be precipitated before sulphide formation occurs.  The washed precipitate may be freed from carbonate or mercaptides by washing with a weak acid such as acetic acid or with a very dilute inorganic acid such as phosphoric acid.  Numerous examples are given.
Patent GB-188007-A (GB)
Title: Improvements in and relating to variable camber aerofoils for aircraft
IPC: B64C3/48
Filed: 1921-05-06
Abstract: 188,007. Beadle, F. P. H. May 6, 1921. Planes, arrangement and construction of; regulating altitude.-A flexible plane comprises a fixed spar A and hinged fore and aft members E, F, the covering being preferably secured to the members E and sliding on the members F, lugs M on which pass through slots in the covering which is retained by wires O. In a biplane, the spars A may be carried by diamond shaped frames B braced together, and the planes may be flexed by struts S, which are hinged to light spars G, H, and have a screw thread R engaged by nuts Q which are rotated by reciprocation of rods U. The rods U may be surrounded by a tube which forms part of the bracing, and the rods may be reciprocated together by pinions on a common shaft rotatable by the pilot. According to the Provisional Specification, the fixed spars may be circular and the fore and aft members may be mounted to turn on it.
Patent GB-801199-A (GB)
Title: Improvements in piston and piston ring assemblies for internal combustion engines
Inventor: CROSS ROLAND CLAUDE
IPC: F16J9/06
Filed: 1956-04-27
Abstract: 801,199. Piston packing. CROSS MANUFACTURING CO. (1938), Ltd. April 17, 1957 [April 27, 1956], No. 13007/56. Class 122 (1). A. piston and piston ring assembly comprises a split piston ring 2 housed in a groove in the piston 1 and a springy ring segment 4 having a free outer diameter d<SP>1</SP> less than the outer diameter of the piston and located between the ring 2 and the bottom of the groove, and means, such as pegs 6, to prevent circumferential movement of the segment in the groove. The invention is designed to obviate or minimize piston slap and the ring segment is located on the thrust side of the piston, the groove being deepened on that side, as by eccentric turning at 5 or by arcuate recessing, to receive the segment.
Patent GB-887234-A (GB)
Title: A new or improved method and apparatus for controlling the movement of fluid pressure operated pistons
Inventor: SCHOENHERR MANFRED
IPC: F15B11/08
Filed: 1958-04-25
Abstract: 887,234. Hydraulic machines. INSTITUT FUR WERKZEUGMASCHINEN. April 25, 1958, No. 13235/58. Class 69 (2). A piston 24 is controlled by a rotary valve 8 which applies pressure fluid through a strokelimiting device alternately to opposite faces of the piston, the valve 8 being driven by an hydraulic motor 40 actuated by a separate pressure-fluid current. The stroke limiting device comprises two control pistons 27, one a mirror image of the other, slidable in the main piston-rod 23 carrying the piston 24 movable in a stationary cylinder 34. Each control piston 27 is mounted on a hollow rod 28 having four radial bores 30 and each piston 27 has diametrically oppositely-disposed ball valves 31 connected by passages 32 to the axial bore of the associated control piston-rod 28. Each control piston-rod 28 is axially adjustable within an independently axially-displaceable bush 33. An electric motor 1 drives pumps 38, 39 supplying respectively the working circuit over line 5 and the motor 40. The rotary valve 8 delivers the working fluid alternately over lines 19, 20 via the bore of one of the piston-rods 28, bores 30, and through bores 26 in the piston-rod 23 to one side of piston 24. Fluid is returned from the other side of piston 24 via bores 26 and the ball valves 31 or the bores 30 to the bore of the other piston-rod 28 and thence via rotary valve 8 to reservoir 3. Shortly before stroke completion the pressure and return fluid is throttled at the bores 26 after which the kinetic energy of piston 24 is absorbed by a pressure accumulator 37. At the end of the stroke the rotary valve 8 reverses the functions of the lines 19, 20 and the first impulse for the reversal stroke is delivered by the appropriate accumulator 37. The working stroke is adjusted by axial adjustment of the control pistons 27 and bushes 33 (via a chain drive 43 or by separate adjustment of nuts 45, 46), and the stroke rate by adjustment of the speed of the rotary valve 8 at motor 40. A modification in which the stroke limiting device is located outside the hollow piston-rod 23 is described, Fig. 2 (not shown).
Patent GB-381123-A (GB)
Title: Improvements in or relating to controllers for electric motors
IPC: H02P25/28
Filed: 1932-05-09
Abstract: 381,123. Master control of A.C. motors. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.-(Assignees of Seeger, E. W. ; Wauwatosa, Wisconsin, U.S.A.) May 9, 1932, No. 13319. Convention date, May 11, 1931. [Class 38 (iii).] Regenerative braking.-A two-speed motor M, connected for high or low-speed operation by means of a switch 9, has reactors 1, 2, 3 in circuit with the low-speed winding S, and direct current windings W2, energized in accordance with the position of the switch 9, are provided on the reactors. As a master switch 11 is moved in one direction or the other a main switch 6 and one of two reversing switches 7, 8 are closed, and the motor M is connected for low-speed operation, the direct-current windings W2 on the reactors 1, 2, 3 being energized and controlling the acceleration. If the movement of the switch 11 is completed the switch 9 is energized, disconnecting the windings W2, and the winding S, and connecting the motor winding S1 for high-speed operation. Upon return of the switch 11 to its " off '' position, the switches 6, 7, 8 are maintained closed over auxiliary contacts 7c, 8c, and the contacts of a relay 10, while the switch 9 drops out to disconnect the winding S1 and connect the slow-speed winding S, and the direct-current windings W2. Regenerative braking is effected under the control of the windings W2, and after a time the relay 10, energized in series with the windings W2, opens to de-energize the switches 6, 7, 8 to disconnect the motor from the supply. Reactors such as 1, 2, 3 may also be provided in the circuit of the winding S1.
Patent GB-688646-A (GB)
Title: Improvements in or relating to electric filter networks of the ladder type
IPC: H03H7/075
Filed: 1950-05-26
Abstract: 688,646. Electric filters. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 26, 1950 [June 1, 1949], No. 13329/50. Class 40 (viii). A ladder network comprising at least two sections and having a straight transmission characteristic curve within the transmission band is constructed from reactances not free from losses and a terminating resistance by calculations in the following steps. First a basic network is calculated on the basis of loss free reactances having the poles desired in the filter and with zero points all displaced an equal real value from the values required. This network can be transformed into a network having the desired zeros and poles and in the process resistances appear in connection with the reactances which thus need not be loss free. The transmission curve of this network, however, is not entirely satisfactory at the edges of the band. The section of the filter associated with the first zero point outside the band is therefore replaced by a section having the same impedance but which does not transmit the frequencies in the proximity of this zero point, thus giving a suitably sharp edge to the band. As shown, the section 2 in Fig. 1 is transformed into that shown in Fig. 5 in which all reactances except L<2> and C<2> have resistances R<1>, R<2> and R<3> associated therewith and thus only L<2> and C<2> need be comparatively loss free. By a further transformation, the section shown in Fig. 5 is produced in which resistances R<1>, R4 and R5 are so disposed as to require no loss free reactances for the section.
Patent GB-117347-A (GB)
Title: A New of Improved Gear Cutting Machine.
Inventor: ANDERSON HARRY PERCIVAL HARRY
IPC: B23F1/06
Filed: 1917-09-19
Abstract: 117,347. Anderson, H. P. H., and Mc- Callum, J. Sept. 19, 1917. Gear-cutting.-A machine for cutting straight toothed wheels, helical wheels, and grooves comprises a work-carrying slide 2 which is moved beneath a milling- cutter driven by toothed gearing from a bevel wheel 18 mounted on the end of an axially-adjustable spindle 16 driven by belt gearing. The spindle is carried by an angularly adjustable frame 9, carrying a milling-cutter c arranged as shown, or in a socket. The headstock 3 has a loose spindle 5 which may be secured to a sleeve 4 connected by toothed gearing to a rack 8 connected to a slide 10 mounted on a pivoted and angularly adjustable lever 11. In cutting straight teeth, the lever 11 is arranged parallel to the bed., In cutting spiral teeth, the lever is inclined to rotate the work as it is fed along.
Patent GB-528403-A (GB)
Title: Improvements in or relating to electrical filter circuits
IPC: H03H7/01
Filed: 1939-05-05
Abstract: 528,403. Impedance networks. SIEMENS BROS. & CO., Ltd., and REED, M. May 5, 1939, No. 13528. [Class 40 (iii)] In a separator comprising a number of bandpass filters A, B ... N having their input or output terminals connected in parallel, the individual filters are so designed that, over the complete working range of the separator, the impedance as seen from the common terminals is equivalent to a constant resistance shunted by a constant capacity. The insertion of a suitable four-terminal correcting network CN in the common input or output circuit brings the impedance of the whole to a constant resistance. The separator is suitable for selecting different harmonic frequencies produced by a single generator, and each band-pass filter comprises one or more T-sections of the kind shown, or with the series and shunt arms interchanged. In certain cases when the frequencies are high enough, equivalent quartz crystal arrangements may be used. The Specification explains how the filters are designed so that all have the same image impedance in their respective pass ranges and so that the image impedance of each filter outside its pass range is equivalent to a constant capacity. The impedance as seen from the common terminals is then that of a resistance R shunted by a capacity C. The correcting network CN is designed as a band-pass filter (Fig. 1) or as a low-pass filter (Figs. 2, 3) presenting a constant resistance equal to R over the working range, but the shunt capacity CP is made less than the calculated value by the amount C.
Patent GB-135451-A (GB)
IPC: A47J37/08
Abstract: 135,451. Stephens, A. J., (Wellington Gas Co.). Aug. 7, 1919. Toasling-stoves.-A gas toaster comprises an enclosed casing A, a number of vertically dis. posed fire-brick radiants h, Fig. 4, extending in parallel across the casing, flanged apertures in the tup of the casing corresponding to the spaces between the radiants, a series of open frames, Fig. 3, carried by side members g, adapted to contain bread or the like and to be placed in the casing through the apertures, and gas burners positioned one beneath the bottom of each radiant. The radiants are hollow and open at top and bottom. The walls of the casing may be heat-insulated if desired. A flue e carries off the products of combustion.
Patent GB-1030551-A (GB)
Title: Improvements in or relating to torch cutting machines
IPC: B23K7/00
Filed: 1964-04-02
Abstract: 1,030,551. Flame cutting apparatus for extrusion plants. MESSER GRIESHEIM G.m.b.H. April 2, 1964 [.June 19, 19631, No. 13559/64. Headings B3P and B3V. In an extrusion plant having a roller run-out table associated with a moving flame torch 5 for cutting off the extruded products 1, there is provided in the cutting region 4 between adjacent rollers 2, 3 an additional chain roller track 6 for supporting the product during cutting. The roller track 6 comprises rollers 7 interconnected by links 9, 10 and having at their ends ball bearings, Fig. 3 (not shown), running in channel-shaped guides 8. The roller track 6 is linked to the torch 5 so as to move therewith during cutting. Alternatively, the roller track may comprise an endless chain with the guides 8 formed as complete circles.
Patent GB-837251-A (GB)
Title: Improvements in or relating to olefine polymerisation processes
Inventor: DUCK EDWARD WILLIAM
IPC: C08F10/00
Filed: 1958-04-29
Abstract: Low-pressure olefin polymerization catalysts comprise a mixture of (a) an inorganic halide of Group IV, V, VI and VIIa; (b) an organo-metallic compound or hydride of a Group I, II or III metal, tin or lead or an organic boron compound or an addition complex thereof or a Group Ia, II or III metal, or an alloy thereof, and (e) nickel, cobalt, platinum, iridium or copper either as finely divided metal or as a compound thereof.  It is preferred to use nickel especially as an organic co-ordination compound thereof. Specifications 799,392, 799,823, 801,031, 820,263 and 829,628 are referred to.ALSO:Olefins are polymerized by the low-pressure process using as catalysts a mixture of (a) an inorganic halide of Group IV, V, VI or VIIa; (b) an organo-metallic compound or hydride of a Group I, II or III metal, tin or lead, or an organic boron compound, or an addition complex thereof, or a Group Ia, II or III metal or an alloy thereof; and (c) nickel, cobalt, platinum, iridium or copper as finely divided metal or as a metal compound.  Specified (c) components are Raney-nickel, nickel acetylacetonate, nickel dimethyl-glyoxime, nickel carbonyl, nickel chloride, biscyclopentadienyl nickel or nickel tetraphenylisonitrile. Specified olefins are ethylene, propylene, butylene and their mixtures.  The polymerization may be carried out in the presence of a hydrocarbon solvent.  Specifications 799,392, 799,823, 801,031, 820,263 and 829,628 are referred to.
Patent GB-967152-A (GB)
Title: Compandor
IPC: H04B3/20
Filed: 1963-04-05
Abstract: 967,152. Compandors operated photo-electrically. STANDARD TELEPHONES & CABLES Ltd. April 5, 1963 [April 11, 1962], No. 13691/63. Heading G1A. [Also in Division H4] The invention relates to an amplitude compression and/or expansion arrangement for voicefrequency electrical signals in a communication system, comprising a variable loss network including a photo-electric element, a source of light acting upon said element and means to modulate said source of light in accordance with the syllabic rate of said voice frequency signals. By "syllabic rate" is meant the rate at which the syllables of speed follow each other and is generally about 10 to 100 per second. In the embodiment shown in Fig. 7 speech signals to be sent from an OFFICE 1 to OFFICE 2, derived from a two wire line 51 are fed through a hybrid coil 54 with balancing network 55 to a transmitting amplifier 56 in a compressor circuit. The output of amplifier 56 is fed back through a summing circuit 61 and an amplifier 62 to a lamp 37 having a low thermal inertia such that its light intensity output follows voltage impulses up to about 100 pulses/sec. which is the approximate frequency of the syllabic rate of speech, but is unaffected by signals of voice frequency. If the level of the speech becomes high the output of the amplifier starts to go up and the lamp 37 becomes correspondingly brighter, causing the resistance of a photoresistor 35 to fall with the result that the voltage at a junction JV of a potentiometer formed by a resistor 60 and the photoresistor 35, goes down thus reducing the signal strength to the amplifier 56. The converse is true when the speech level goes down. A loud signal on a line 53 from OFFICE 2 increases the output of an amplifier 57 in the expandor circuit. This signal is fed through the summing circuit 61 and amplifier 62 and causes an increase in the brightness of the lamp 37 causing the resistance of a further photoresistor 36 to fall thus causing an increase in the voltage across a load resistor 70, therefore a high signal from the amplifier 57 is further increased with the converse being true in the case of small signals. The lamp 37 and the photoresistors 35, 36 are mounted in an enclosure 20 as shown in Fig. 3 and light from the lamp is directed on to each photoresistor by means of respective frustro-conical reflectors 38 and 39. The amplifiers 56, 57, 62 all employ PNP transistors and together with the hybrid coil 54, balancing circuit 55, and the summing junction 61 are described in detail (Fig. 8 not shown). In a further embodiment (Fig. 9 not shown) the compressor and expandor circuits are separate and have completely separate photoresistors and lamps.