baber/WOPTO huggingface dataset:
Patent GB-1410822-A (GB)
Title: Electroacoustic arrangements
IPC: H04R17/00
Filed: 1972-10-05
Abstract: 1410822 Piezoelectric transducers; microphone circuits MARCONI CO Ltd 3 Oct 1973 [5 Oct 1972] 45921/72 Heading H4J A microphone or other electro-acoustic transducer comprises a sheet 1 (Fig. 1) of polymer or plastics material which is permanently polarized and has electrodes 2, 3 on its opposite faces 4, 5. The sheet a preferably of polyvinylidene chloride, polyethylene, polyethylene terephthalate, polyvinyl fluoride, polytrifluorochlorethylene or nylon. Electrode 2 has a conductive arm 6 while electrode 3 has a conductive arm 8 extending in the opposite directions. Wires (13, 14), Fig. 2 (not shown), are secured to the arms 6, 8 by conductive epoxy resin or by mechanical means. Sheet 1 is polarized by heating it, together with the electrodes 2, 6 and arms 3, 8, to 100‹ C. and applying a voltage of 500V (equivalent to an electric field of 150 kV cm<-1> between faces 4, 5 for one hour whilst heating is maintained. The sheet is then cooled to room temperature while maintaining the applied voltage. The sheet 1 is held taut between two clamping discs (10, 11) Fig. 3 (not shown) of plastics material. One disc (10) has a central circular aperture (15) to expose electrode 2 to acoustic waves. It is thought that the transducer relies upon the piezoelectric effect. The microphone 16 (Fig. 4) is connected between ground and the gate electrode 18 of a F.E.T. 19. Drain electrode 20 is grounded while source electrode 22 is connected via resistor 23 (68 K#) to the negative terminal of a voltage source 24. Bias for the gate electrode 18 is derived via a resistor 25 (10<12> Q) from the negative terminal of source 24. The output is taken from terminals 26, 27.
Patent GB-1218263-A (GB)
Title: Chain sprocket
Inventor: MOULD GEOFFREY RUSSELL
IPC: B65G23/00
Filed: 1968-09-27
Abstract: 1,218,263. Chain wheels. COAL INDUSTRY (PATENTS) Ltd. 12 Sept., 1969 [27 Sept., 1968], No. 46007/68. Heading F2Q. In a chain sprocket adapted for use with round-link chain, successive teeth are joined by a web 34, a circumferential groove 36 separates the limbs 30 of the teeth and divides the web into two ribs 38, and recesses 52 are formed in the webs 34 to provide clearance for the escape of material such as mine dirt. The extremities 55, 57 of a stripper blade 18 protrude into the groove 36 to clear dirt out of the groove.
Patent GB-965676-A (GB)
Title: Polyesters
IPC: C08G63/676
Filed: 1961-12-22
Abstract: Ethyl-anthraquinonyl-21-methylene malonate is made by reacting formyl-2-anthraquinone dissolved in sulphuric acid with ethyl-malonate, the solution being poured on ice and the resultant precipitate washed with water and dried. Specification 965,678 is referred to.ALSO:A process for the manufacture of a polyanthraquinonyl methylene malonate of a linear polyalcohol having one hydroxyl group at each end of its chain comprises heating an alkyl anthraquinonyl-21-methylene malonate with a linear polyalcohol in the presence of an esterification catalyst, the resultant anthraquinonyl-21-methylene malonate of the polyalcohol being polymerized by heating under vacuum.  The examples describe the preparation of polymers from ethyl-anthraquinonyl-21-methylene malonate and:-(1) butane diol-1:4 and (2) ethylene glycol, the specified esterification catalyst being butyl titanate.  The polyesters which are soluble in dimethyl formamide or chloroform may be catalytically hydrogenated in solution in the presence of palladium or alumina or hydrogenated in the solid state by a hydrochloric acid solution of titanium trichloride, the resultant hydrogenated derivative of the latter process being re-oxidized by air with the resultant formation of hydrogen peroxide.  Specification 965,678 is referred to.
Patent GB-1282516-A (GB)
Title: Improvements in or relating to methods and apparatus for measuring surface roughness
IPC: G01B9/02
Filed: 1969-09-19
Abstract: 1282516 Measuring surface roughness PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Sept 1969 [24 Sept 1968] 46235/69 Heading G1A In an apparatus for measuring the roughness of a surface 1 light from a source 12 is directed via a condensing lens 13, a beam-splitting mirror 14 and a lens 2 on to the surface 1 and two images of the surface, having a periodic phase difference and a variable lateral displacement with respect to one another, formed by means of a further beam splitting mirror 5 and two mirrors 6 and 7, as shown, are superimposed on a detector 9. The periodic phase difference between the images is due to the mirror 6 oscillating in the direction indicated in Fig.2. The detector 9 provides an alternating signal output and its amplitude is varied as the mirror 7 is rotated to provide the variable lateral displacement. A measurement of the roughness of the surface can then be derived from the maximum and minimum values of the amplitude of the alternating signal output. A mathematical analysis is disclosed.
Patent GB-1285412-A (GB)
Title: Sorting installation
IPC: B65G47/68
Filed: 1970-09-29
Abstract: 1285412 Endless conveyers FROMME FORDERANLAGEN GmbH 29 Sept 1970 [18 Oct 1969] 46290/70 Addition to 1201592 Heading B8A Apparatus for selectively removing goods from an endless conveyer belt to individual destination stations as described in parent Specification is modified in that the deflecting pins 21 are deflected by respective switches 23r 1-6  into individual cross-over tracks 22z 1-6  such that the deflecting pins in discharging an article from the conveyer 3 are in a line extending parallel to the longitudinal direction of the conveyer. In an alternative embodiment, Fig. 4 (not shown) the deflecting pins (103) are arranged in sets of three rigidly interconnected by links (106). The centre deflecting pin only having a head roller (103a) for engagement with a cross-over track (105).
Patent GB-979908-A (GB)
Title: Improved process for the production of ethyl alcohol
IPC: C07C29/32
Filed: 1962-12-10
Abstract: Ethanol is prepared by heating under high pressure methanol, carbon monoxide and hydrogen in the presence of a water soluble cobalt catalyst, an iodine promoter, and a phosphorus compound soluble in methanol.  The specified cobalt catalysts are carbonyls and cobalt salts of C1 to C5 carboxylic acids, iodine promoter is iodine, and phosphorus compounds are phosphonates, phosphites, phosphates, phosphenes and phosphonic acid. Generally temperatures of 150 to 250 DEG C. and pressures of 3,000 to 15,000 p.s.i.g. are employed.
Patent GB-1373802-A (GB)
Title: Pallet made of plastics
IPC: B65D19/00
Filed: 1971-10-07
Abstract: 1373802 Load handling pallets SCHOELLER & CO KG 7 Oct 1971 [10 Oct 1970 13 Sept 1971] 46795/71 Heading B8H An injection moulded plastics pallet comprises an imperforate deck with a peripheral depending apron. Reinforcing ribs, arranged as a grid, are provided on the lower surface of the deck and may support a lower deck or a series of feet to distribute the load. The ribs may be cut away to allow two or four way entry and the feet may be joined by ribbed members of various configurations. The feet may be releasably secured by screws to the deck or permanently secured by mechanical connections or adhesives.
Patent GB-1182476-A (GB)
Title: Improvements in and relating to Rotary Vane Pumps
Inventor: DIETRICH G
IPC: F04B49/08
Filed: 1967-10-16
Abstract: 1,182,476. Rotary vane pumps. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. Oct.16, 1967 [Oct.22, 1966], No.47065/67. Heading F1F. A rotary sliding vane pump, particularly for servo steering systems in motor vehicles, comprises a housing 2, Figs. 1, 3, a centrally mounted oval cam ring or stator 5, a driven rotor 4 carrying a plurality of radially sliding vanes 7 and a hydraulic pressure medium control valve 10 for by - passing hydraulic fluid from pumps discharge chambers 9, 9<SP>1</SP> to pump suction chambers 8, 8<SP>1</SP> through a main by-pass passage 14 and a smaller diameter preliminary by-pass passage 17 extending along the main by-pass passage on the drive side of the pump. The centering of the cam ring 5 is by means of member 12, 12<SP>1</SP>, 12<SP>11</SP>, with the member 12, Fig. 5, of smooth contour located opposite to the outlets of the passages 14, 17 to divide the flow between the chambers 8, 8<SP>1</SP> without turbulence and pressure losses. At the same time flow through the passages 14, 17 sucks oil from a suction bore 13 connected to the pump reservoir to ensure complete filling of the pump suction chambers and avoidance of cavitation. The function of the flow regulating valve 10 is such that with increasing speed of the pump the differential pressure upstream and downstream of a throttle in the pump discharge duct increases to increase the opening of the valve and increase the flow into the passage 14.
Patent GB-1021069-A (GB)
Title: Improvements in or relating to multipolar protectors for polyphase electrical current transmission systems
IPC: H02H3/08
Filed: 1963-11-29
Abstract: 1,021,069. Electric cut-outs. A. P. RODRIQUEZ. Nov. 29, 1963 [Dec. 6, 1962], No. 47234/63. Heading H2G. A protector (for a polyphase system) comprises a housing 1 supporting a plurality of fuse elements 4 electrically and thermally insulated from one another, except that over a part 5 of each of their lengths they are exposed to, but spaced from, one another in such a way that fusion of one element causes the exposed parts of the other elements to fuse. Fusion of the other elements arises from a spreading of the arc from the first element, and is assisted by the heat of fusion of the first element being confined in the small space 5. The housing may be of porcelain and may have channels 3 carrying the fuse elements and packed with gas absorbing materials such as quartz-sand. Each fuse element may be connected in one phase of a polyphase system.
Patent GB-1060269-A (GB)
Title: Rotary detent mechanisms
IPC: H01H19/11
Filed: 1964-11-20
Abstract: 1,060,269. Locking switches. STANDARD TELEPHONES & CABLES Ltd. Nov. 20, 1964 [Nov. 27, 1963], No. 47317/64. Heading H2B. [Also in Division F2] A detent mechanism for a rotary switch comprises two angu larly fixed cam plates 1, 2 each having a plurality of angularly spaced, axially projecting cams 2a, 2b, the cams on one plate being angularly stag gered with respect tc those on the other, rollers 3b, 3c projecting from the switch spindle 4 to lie between the plates. The construction provides for the spindle twice as many arresting positions as there are cams on one plate.
Patent GB-1201823-A (GB)
Title: Process for recovering glutamic acid
Inventor: NAGAI TOSHIAKI
IPC: B01J39/04
Filed: 1967-10-18
Abstract: 1,201,823. Recovery of glutamic acid. AJINOMOTO CO. Inc. 18 Oct., 1967 [1 Nov., 1966], No. 47512/67. Heading C2C. Glutamic acid is recovered from its fermentation broth by contacting a mother liquor having a pH below 4, from which some of the glutamic acid originally present has been separated, with a strongly acidic cationexchange resin capable of adsorbing the glutamic acid remaining in the mother liquor, separating off the waste liquor, eluting the adsorbed acid with a fresh glutamic acid fermentation broth, adjusting the pH of the eluate to crystallise and separate the glutamic acid and treating the resulting mother liquor in a manner similar to that in which the first mentioned mother liquor was treated. The process of contacting the mother liquor with the exchange resin is preferably carried out in a column with a space velocity of 0.1-10 v/v/ hour. The resin is preferably in the hydrogen form. The pH of the mother liquor is advantageously 1-3 and the fresh fermentation broth a pH 7-8.
Patent GB-1125636-A (GB)
Title: Improvements in and relating to overrunning clutches
IPC: F16D41/067
Filed: 1966-10-24
Abstract: 1,125,636. Ratchet clutches. TORRINGTON CO. 24 Oct., 1966 [24 Oct., 1965], No. 47556/66. Heading F2C. A one-piece sheet-metal roller retainer 18 for an over-running roller clutch comprises side flanges 20 connected by cross-bars 22 on which are formed roller biasing arcuate blade springs 26 bent on tabs 25 at right-angles thereto to engage at the pitch circle of the rollers 17. The blade springs 26 may be notched at (30, 31, Fig. 4, not shown) at their supporting tabs 25 and/or may be tapered in width, or thickness, as by coining, to vary the spring strength as required. The side flanges 20 axially locate the rollers 17 and are formed at their radially outer edge with notches 32 which serve to locate the retainer 18 in the notched recesses 16 of the outer cammed race 14, which cammed race may be formed by embossing. After blanking and forming the retainer from strip metal as at (19) (Fig. 2, not shown), the retainer is cylindrically rolled and its abutting edges welded to form the retainer ring which is thereafter heat-treated. The rollers 17 may be snapped into the retainer and stored as a unit ready for fitting, each roller being biased by its blade spring 26 to seat against the back edges 24 of the adjacent crossbar 22.
Patent GB-476241-A (GB)
Abstract: 476,241. Ignition sets and systems. FARGETTE, J. P. J. June 4, 1936, No. 15666. Convention date, June 4, 1935. [Class 7 (iv)] Induction coils 2, 3, with associated condensers 9, 10, are mounted on a T-support together with a change-over switch 11 for connecting either coil to the remainder of the system. The switch comprises a central stud connected to the contact breaker 28 and five peripheral studs, one of which 14 is connected to the battery, and the others to the ends of the two coils and to the condensers. A handle 22 with a transverse contact connects the battery terminal 14 with one or other of the coil terminals and simultaneously closes a circuit from the central stud to the contact leading to the other terminal of the coil. The high-tension connections may also be effected by the handle 22.
Patent GB-1281047-A (GB)
Title: Irradiation apparatus
IPC: G21K5/10
Filed: 1969-09-29
Abstract: 1281047 Irradiation apparatus SULZER BROS Ltd 29 Sept 1969 [10 Oct 1968] 47689/69 Heading H5R Apparatus for irradiating granular materials such as cereals includes a through-flow vessel 1 having feeder and discharge arrangements for controlling the rate of flow of the material, and a pattern 3 of irradiation members extending at right angles to the flow path and over the entire cross-section of the vessel, the members being arranged such that radiation is emitted along the flow path. The irradiation members may be cobalt 60 elements contained in tubes 6 mounted in a pair of facing walls of the vessel, through which the elements may be withdrawn, the tubes-which may be staggered in the vertical direction to minimize flow restriction-having inclined covers 7 to prevent retention of material thereon. The feeding apparatus 10 is controlled by a level gauge 43 to maintain a constant height of material in the vessel, while the discharge rate is controlled by the speed of rotation of the knife cylinders 24, 25, 26, and 27. To compensate for reduced irradiation intensity adjacent the walls of the vessel, the discharge rate is reduced, adjacent the pair of walls in which the cylinders are mounted, by reducing the volume of the pockets defined by adjacent knives with annular blocks which are axially tapered towards the mid-points of the cylinders (Fig. 2a and 2b, not shown) and, adjacent the other pair of opposite walls, either by the use there of cylinders of increased diameter to reduce the pocket volume (Figs. 3a and 3b, not shown), or by an increased spacing between the cylinders adjacent the walls (Figs. 4a and 4b, not shown). In other arrangements, the knives of those cylinders nearest the vessel wall may be of reduced radius, or those cylinders may be rotated at reduced speeds. Uniformity of irradiation over the cross-section of the vessel may be further improved, Fig. 5, by varying the distribution density of the irradiating elements in the pattern 3, by reducing both the spacing between the tubes 6, and the spacing within the tubes of the elements 85... 88, adjacent the walls of the vessel. In a modified apparatus (Fig. 6, not shown) the feeder arrangement 10 is replaced by a periodically fed hopper (101) forming a buffer volume upstream of the vessel 1, a screening member (103) mounted immediately beneath the region of restricted cross-section joining the hopper to the vessel preventing premature irradiation of the material.
Patent GB-981857-A (GB)
Title: Gas turbine engine
Inventor: COPLIN JOHN FREDERICK
IPC: F01D25/16
Filed: 1963-12-03
Abstract: 981,857. Gas turbine ducted fan jet engines. ROLLS-ROYCE Ltd. Dec. 3, 1963, No. 47806/63. Heading FIJ. A gas turbine jet engine of the ducted fan type comprises an annular main duct within which are disposed compressor means, combustion equipment and turbine means, an annular fan duct which surrounds at least part of the annular main duct and an engine driven fan rotor having fan rotor blades which are disposed within the annular fan duct, the fan rotor being rotatably mounted by means of a single bearing which is disposed inwardly of the annular main duct and on one side only of the fan rotor, the fan rotor being unsupported at its other side. The engine shown comprises an annular duct 11 within which are disposed a low pressure compressor 12, a high pressure compressor 13, combustion equipment 14, a high pressure turbine 15 which drives the high pressure compressor 13 by means of shaft 20, and a low pressure turbine 16 which drives the low pressure compressor 12 by means of shaft 21. An annular by-pass duct 22 is disposed around the main duct 11, a portion of the air delivered by the low pressure compressor 12 passing therethrough. An annular fan duct 24 formed by an annular cowling 23 is disposed around the downstream end of the main duct 11 and fan rotor blades 25 are disposed therein, the fan blades being formed integrally with turbine blades 27 which are carried by a rotor 26, the turbine blades 27 being disposed within the main duct 11 downstream of the low pressure turbine 16. The rotor 26 is supported at its upstream side by means of a bearing 35, the bearing comprising an outer race 34, which is carried by the outlet guide blades 32 disposed downstream of the low pressure turbine 16, and an inner race 36 which is connected by a U-section member 37 to the fan rotor 26 on one side only thereof, the opposite side of the fan rotor being unsupported. The guide blades 32 are connected to or are formed integrally with fan inlet guide vanes 30, the vanes 30 together with struts 31 downstream of the fan rotor blades 25 serving to support the fan cowling 23.
Patent GB-1280029-A (GB)
Title: Base for a lamp socket and lamp socket incorporating the base
Inventor: PAGE IAN BRUCE
IPC: H01R33/46
Filed: 1969-09-30
Abstract: 1280029 Lampholders AMP Inc 18 Aug 1970 [30 Sept 1969] 47886/69 Heading H2E A lamp holder comprises a base Fig. 1 having a wall 2 defining a lamp socket receptacle the wall being slotted at 4, walls 5 extending towards a slot 11 and bridge 9, and lamp socket 19. The base is recessed at 7 within the wall 2 (Fig. 2, not shown) and the ends of the walls 5 remote from wall 2 are undercut. The contact Fig. 3, comprising lugs 13 crimped to wire 14, is passed under the bridge so that the end 18 is positioned in the centre of the recess (Fig. 4). The projection 16 engages the groove 11 and the edges of the portion 15 are retained in the undercut sections of walls 5. The lamp socket is attached to the base with projections engaging slots 8 or passing through the base and being peened over. Edge shields 22 are provided and the lamp is retained by J-slots 20.
Patent GB-1001434-A (GB)
Title: Method of granulating cellulose esters
IPC: B01J2/10
Filed: 1963-12-04
Abstract: Fibrous cellulose ester, of shredding grade 30-200, as defined, and in the form of an aqueous or organic non-solvent slurry containing 20-60% by weight of solids, is granulated by subjecting it to agitating and twisting motions.  If necessary, the cellulose ester is shredded and separated to the requisite grade <PICT:1001434/C3/1> before granulation.  The cellulose ester may be nitrocellulose. Specified slurrying liquids are ethyl alcohol, isopropyl alcohol, petroleum ether, benzene and toluene.  The process may be carried out by use of the disintegrating and granulating apparatus shown in Fig. 1, comprising a set of continuous helical blades 4 fitted on to a first shaft 3 revolving in cylinder 2 having feed inlet 1 and connected at the other end to a second cylinder 5, which contains a set of discontinuous blades 7 mounted on revolving shaft 8, and which is provided with product outlet 8.  In operation, a fibrous cellulose ester, previously shredded in conventional apparatus to the requisite shredding grade, is further shredded in part A, and is then agitated and twisted in part B to form spheroidal particles of diameter 1-2 mm.
Patent GB-1555836-A (GB)
Title: Fibre reactive azo dyes process for their manufacture and use thereof
IPC: C09B62/04
Filed: 1977-11-17
Abstract: New fibre-reactive azo dyes of the formula <IMAGE> where the symbols are each as defined in Claim 1, are obtained when a 6-hydroxy-2-pyridone of the formula <IMAGE> diaminobenzenes of the formulae <IMAGE> a halo-s-triazine of the formula <IMAGE> and a halo-s-triazine of the formula <IMAGE> are coupled and condensed in any desired order to form a fibre-reactive azo dye of the formula (1) and optionally a halogen atom Z or a halogen Z and halogen Y is or are each replaced by an amino group by condensation with an amine. The fibre-reactive azo dyes of formula (1) are notable for high reactivity and a high degree of fixation. They are particularly suitable for dyeing cellulose-containing textile materials, producing fast dyeings in yellow shades.
Patent GB-1484128-A (GB)
Title: Flame-retardant phosphor amidates
IPC: C07F9/24
Filed: 1974-10-10
Abstract: 1484128 Flame retardant polyurethane foams TENNECO CHEMICALS Inc 10 Oct 1974 [15 Oet 1973] 48041/73 Heading C3R [Also in Division C2] A polyurethane foam-forming mixture comprises (a) an organic polyisocyanate having a functionality of at least 2, (b) a polyether polyol, a polyester polyol, or mixture thereof, (c) a foaming agent, (d) a catalyst and (e) from 3 to 30 parts by weight of a flame-retardant additive per 100 parts by weight of the polyol, the flameretardant additive being a phosphoric ester amide of the formula wherein R is a C 4 -C 8  chloroalkyl group having 1 to 4 Cl atoms, a bromoalkyl or chlorobromcalkyl group containing 1 to 8 C atoms and from 1 to 4 halogen atoms, or a chloro(bromo- or chlorobromo)phenoxyalkyl group containing from 8 to 12 C atoms and 1 to 4 halogen atoms, R<SP>1</SP> is H or a C 6 -C 14  aryl group and R<SP>11</SP> is a C 1 -C 10  alkyl group, a chloro(bromo- or chlorobromo-)alkyl group containing 1 to 8 C atoms and from 1 to 4 halogen atoms, a C 6 -C 14  aryl group, a chloro(bromo- or chlorobromo)aryl group containing 6 to 14 carbon atoms and 1 to 4 halogen atoms, or a cyclohexyl group. The additive is suitably first blended with the polyol and the blend then added to the other ingredients. Examples are given for the production of flexible polyurethane foams.
Patent GB-1198479-A (GB)
Title: Improvements Electroless Metal Coating
IPC: C23C18/28
Filed: 1967-10-25
Abstract: 1,198,479. Coating with metals. INDUSTRIAL DISTRIBUTORS (1946) Ltd. Oct.25, 1967 (Nov. 1 1966 (3)], No.48450/67. Heading C7F. An electroless solution for plating, e.g. diamonds or brass or steel sheets with nickel or cobalt contains 0À01 to 0À035 moles 11. of hypophosphite ions and the metal: hypophosphite mole ratio is between 0À04 and 0À25 or 1À6 and 6. The process may be carried out continuously whilst stirring the solution in an electrically heated insulated bath. The substrate may be treated with stannous and palladium chlorides before plating. The pH of the solution is between 4 and 11.