baber/WOPTO huggingface dataset:
Patent GB-284532-A (GB)
Title: Improvements in or relating to porous metal bodies
IPC: B22F3/11
Filed: 1927-06-15
Abstract: 284,532. White, A. E., (General Motors Research Corporation). June 15, 1927. Compositions containing metals. -A porous metal pr bearings and other rubbing parts is formed by compressing a mixture of finely divided ingredients including metals which do not alloy or only partially alloy and graphite and another de-oxidizer and heating said mixture. A suitable mixture has the following composition by weight : Copper 90, tin 8, lead 10, phosphor-tin 2, graphite 6 and salicyclic acid 2 to 4. Other suitable compositions are given in the Specification.
Patent GB-529420-A (GB)
Title: Constant potential transformer
IPC: G05F3/06
Filed: 1939-05-31
Abstract: 529,420. Transformers.. SOLA ELECTRIC CO. May 31, 1939, No. 16005. Convention date, Aug. 31, 1938. [Class 38 (ii)] A constant potential transformer comprises a primary winding 13 having loose magnetic coupling through the core 10 and high leakage reactance 20 with an auxiliary winding forming with the capacity 21 a circuit which is resonant to the frequency of the primary voltage. The output winding 16 is directly coupled to the winding as in the auto-transformer arrangement shown, or it may be wound over the auxiliary winding. An auxiliary regulating winding 23, directly coupled with the primary winding, may be in series with the output winding 16.
Patent GB-833962-A (GB)
Title: Means for separably binding booklets together
IPC: B42F11/02
Filed: 1958-05-19
Abstract: 833,962. Filing papers &c. ROSS, R. L. May 19, 1958 [May 20, 1957], No. 16035/58. Class.146(1) A number of booklets 10, removably bound together, each consist of double leaves joined together along a fold line by means of staples 12, stitches, or other means providing loops externally of the fold line, and these loops are engaged over binder plates each consisting of a base plate and a pair of wings 14 which overlie the base. The bocklets are retained on the binder plates by a long packing strip 15 which is inserted endwise between the wings 14 of each plate and the loops of the staples &c. 12, and this strip may have an outer cover part overlying the wings 14 and joined to the strip by a central neck portion. A cover leaf 16, having cutouts in the spine to accommodate the binder plates may be applied before the packing strip 15 is inserted, and the sides of the cover may be slipped into pockets in a loose cover. As shown in Fig. 8, a metal packing strip 20 of U-shape, with the limb 21 much longer than the other limb 22, is housed in a tubular pocket in the spine of a loose cover 24. Transverse slits 25-27 in the pocket to allow the strip 20 to be inserted, and the ends of the limbs 21. 22 lie externally of the pocket. In this form, the two binder plates are hooked over the limbs 21, 22.
Patent GB-228100-A (GB)
Title: Improvements in and relating to flexible couplings
IPC: F16D3/78
Filed: 1924-07-04
Abstract: 228,100. Goodrich Co., B. F., (Assignees of Wilson, G. 'F.). Jan. 22, 1924, [Convention date]. Universal joints for spring suspensions and torque arm connections of motor vehicles. A central coupling disc 14 is built up of two rings 15 of laminated rubberized fabric alternately spaced apart by rubber pads 16 and clamped together by blocks 21 secured by bolts 20 alternately to the spider arms 12a, 13a on the shaft ends: The bolts pass through holes in the blocks and holes 19 in the coupling-disc. Hollows 22, Fig. 5, may be formed in the pads 16. The pads and fabric are vulcanized together. The disc is adapted to transmit a compressive force between the arms.
Patent GB-1284658-A (GB)
Title: Improved process for the preparation of polyesters
IPC: C08G63/85
Filed: 1970-04-06
Abstract: 1284658 Linear polyesters GOODYEAR TIRE & RUBBER CO 6 April 1970 [2 May 1969] 16191/70 Heading C3R Linear polyesters are prepared by reacting together with the removal of water a free dicarboxylic acid and a glycol of the series where n is an integer from 1 to 10, dissolved in a quantity of low molecular weight linear polyester, in the presence of a catalyst selected from organic carboxylic acid salts of titanium or zirconium, beta-diketonates of titanium or zirconium and alcoholates of titanium or zirconium to produce a condensation product of the acid and the glycol, and polymerizing the condensation product in the presence of a polymerization catalyst, the low molecular weight linear polyester having the general formula wherein H is hydrogen, G is the glycol, A is the acid and n is from 1À4 to 20. Additional catalysts which may be used are oxides and silicates of alkali metals and alkaline earth metals, alkali metal and alkaline earth metal salts of carboxylic acids, and organic oxides of alkali metals and alkaline earth metals. Organo phosphorous compounds may be added to the reaction mixture. The process may be continuous. In the examples the titanium and zirconium compounds are used as catalysts in the preparation of polyethylene terephthalate.
Patent GB-579770-A (GB)
Title: Improvements in or relating to centrifugal compressors, pumps and superchargers
IPC: F04D29/44
Filed: 1943-10-04
Abstract: 579,770. Centrifugal compressors. HAWORTH, L. Oct. 4, 1943, No. 16249. Drawings to Specification. [Class 110 (i)] [Also in Group XXII] The tip edge of the impeller blades or the leading edge of the fixed diffuser blades, or both are shaped so that the distance between them, measured in the general direction of flow, varies along the length of the edges. This may be effected by mounting an appropriately shaped tool coaxially with the impeller casing and shaping the leading edge of the diffuser vanes by a turning operation.
Patent GB-202775-A (GB)
Title: Improvements in bolts and like fastening devices
IPC: F16B37/08
Filed: 1922-06-12
Abstract: 202,775. Moore, T. W., and Moules, M. June 12, 1922. Nuts and bolts. - A quickaction nut and bolt of the type in which the nut or bolt head can slide freely along the bolt and be engaged thereon by a partial turn on an interrupted thread &c., comprises a removable nut-like head c having three or more equally spaced balls e which partially project into the bore and are held in position by set-screws f, the projecting portions of which balls are adapted to slide in longitudinal grooves b in the bolt-shank a, and can be turned through transverse passages i into engagement with pockets j. The balls e may be replaced by internal projections integral with the nut c, and transverse passages in the bolt may be arranged spirally or as interruped annular grooves.
Patent GB-1197558-A (GB)
Title: Acrylic Acid Purification and Polymerization
Inventor: BASHAW ROBERT NILES
IPC: C08F120/06
Filed: 1969-03-28
Abstract: 1,197,558. Acrylic acid purification. DOW CHEMICAL CO. 28 March, 1969, No. 16269/69. Heading C2C. [Also in Division C3] Acrylic acid is purified by distilling inhibited acid through a copper packing, recovering the distillate in water below 20‹ C., and contacting the aqueous solution with a resin such as an ion-exchange or chelating resin to separate the copper ions. Sulphonic acid cation exchange resin is used in an example.
Patent GB-296151-A (GB)
Title: Improvements in inkwell holders
IPC: B43L25/00
Filed: 1927-06-20
Abstract: 296,151. North of England School Furnishing Co., Ltd., and Gray, C. A. June 20, 1927. Inkstands.-An inhwell holder adapted to be removably attached to the edge of a table or desk E comprises a number of upturned resilient fingers B at the ends of transversely arranged metal strips which are riveted or otherwise secured upon one horizontal limb d of a spring clip D, the lower limb d<1> of which is bent upwardly at its end to grip the underside of the table &c. The resilient fingers may be mounted upon a clip having vertical limbs for attachment to the back of a chair.
Patent GB-738057-A (GB)
Title: Method of producing furan-2-carboxylic acid derivatives substituted in the 5-position
IPC: C07D307/68
Filed: 1953-06-12
Abstract: Furan-2-carboxylic derivatives are obtained by the reaction of pyromucic esters with formaldehyde in presence of H2SO4 and acetic acid at -10 DEG  to 30 DEG  C.  The esters are introduced into the formaldehyde solution in excess and the product is mainly an acetal of the formula <FORM:0738057/IV (b)/1> where R is a hydrocarbon radical.  In examples pyromucic acid (furan-2-carboxylic acid) methyl ester alone or in solution in conc. sulphuric acid with acetic acid is introduced into excess of paraformaldehyde in suspension in a mixture of conc. sulphuric acid and acetic acid, and cooled, to give after some time, bis-(2-carbmethoxy-5-furfuryloxy) methane, with some difuryl ether dicarboxylic acid dimethyl ester.  The ethyl and n-butyl esters of the acid are also specified as suitable and the formaldehyde may be used in monomeric or forms adapted to release it. The acetals may be converted by saponification into free acids and also to 5-oxymethyl pyromucic acid.
Patent GB-1255552-A (GB)
Title: Continuous extraction of granular polyamides
IPC: C08G69/46
Filed: 1969-03-28
Abstract: 1,255,552. Making extracts, solutions &c. BADISCHE ANILIN- & SODA-FABRIK A.G. 28 March, 1969 [30 March, 1968], No. 16389/69. Heading B1Q [Also in Division C3] In apparatus for continuously contacting polyamide particles with an extraction agent, e.g. H 2 O or C 1-4  alkanols, flowing from bottom to top of an elongated extraction zone, some or all of the agent is removed in the upper part of the zone at a point and reintroduced above or below. The length of the zone, if of circular cross-section, is preferably 5-40 times the diameter. Agent removed may pass through a heater or cooler before reintroduction. Dimensions of the apparatus are exemplified.
Patent GB-1395287-A (GB)
Title: Huller
IPC: B02B3/04
Filed: 1973-04-05
Abstract: 1395287 Grain sorter and huller T SATAKE 5 April 1973 16461/73 Heading A2Q Apparatus for separating a mixture of hulled and unhulled grain and hulling the unhulled component comprises (a) a sorting pan 1 with a rough sloping surface 3, (b) a grain supply opening 15 in the upper edge H of the pan, (c) an outlet 5 for hulled grain in the lower edge L of the pan, (d) an outlet 7 for unhulled grain, (e) an outlet 6 for mixed hulled and unhulled grain, (f) means (not shown) for reciprocating said surface in an obliquely upward direction at right angles to the slope, (g) a lateral vibratory conveyor 22 positioned to receive unhulled grain from outlet 7 and rigidly attached to the pan 1, so as to .be reciprocated by said reciprocating means and (h) hulling means (not shown) positioned to receive unhulled grain from an outlet 25 of said vibratory conveyor. In the embodiment shown, untreated grain is passed through the huller, the mixture of hulled and unhulled grain issuing from the huller is separated into three streams, the stream of hulled grain is discharged, the stream of unhulled grain is returned to the huller and the stream of mixed hulled and unhulled grain is returned to the sorter. Untreated grain is fed from hopper 27, via gate 29 to vibratory conveyor 22. Here it passes over gauze 24 Which retains any straw refuse. The grain passes through gauze 24 and is fed via outlet 25 to a huller (48, Fig 7, not shown). The mixture of hulled and unhulled grain issuing from the huller is raised by a bucket elevator (52, Fig 7) to hopper 4. Hopper 4 may move up and down, being biased upwards but moving downwards when full of grain. When full of grain, its downward movement automatically closes gate 29 on hopper 27. From hopper 4, the grain is sorted on surface 3 into 3 streams. Hulled grain issuing from outlet 5 is fed by vibrating conveyor 16 to perforated plate 18 which retains the hulls and discharges them down chute 20. 'The hulled grains pass through plate 18 and are discharged by chute 19. The stream of unhulled grain issuing from outlet 7 is returned to vibratory conveyor 22 and thence to the huller. The stream of mixed hulled and unhulled grain entering opening 6 is returned via outlet 21 to the foot of the bucket elevator and thence to the sorting pan 1.
Patent GB-803655-A (GB)
Title: Dehydrocortical hormones
IPC: C07J13/00
Filed: 1955-06-08
Abstract: The invention comprises 21-acetoxy-1,4,17(20)-pregnatriene-3,11-dione represented by the formula <FORM:0803655/IV (b)/1> This compound may be obtained by protecting the 3-keto group of methyl 3,11-diketo-1,4,17(20-pregnatrien-21-oate with an enol ether, cyclic ketal, or preferably with a pyrrolidyl enamine, then reducing the 21-carboxyloxy group with lithium aluminium hydride or lithium borohydride, followed by hydrolysis, usually with acid, to regenerate the D 1,4-3-keto group, acylation of the 21-hydroxy group to produce an 11b -hydroxy-21-acetoxy-1,4,17(20)-pregnatrien-3-one and then oxidizing the 11b -hydroxy group to an 11-keto group with chromic acid in glacial acetic acid at 0 DEG  C. to produce 21-acetoxy-1,4-17(20-pregnatriene-3,11-dione.  An example is given. Specifications 761,490, 761,526 and 799,493 are referred to.
Patent GB-785205-A (GB)
Title: A new complex calcium salt of 4-aminosalicylic acid and method for preparing same
IPC: A61K33/06
Filed: 1956-05-28
Abstract: The invention comprises a complex calcium alumino-p-aminosalicylic salt containing the calcium, the acid and the aluminium in the molecular ratio of 1 : 2 : 1, and a method of preparing it by the reaction of calcium hydroxide or a soluble calcium salt on alumino-p-amino salicylic acid or its ammonium or alkali metal salt. Alumino-p-aminosalicylic acid is obtainable by the action of soluble Al salts on the ammonium or alkali metal salts in presence of alkali such as bicarbonate of soda.  In examples, alumino-p-aminosalicylic acid, obtained by the reaction between potassium alum, sodium p-aminosalicylate and sodium bicarbonate is precipitated and dissolved up in sodium hydroxide, calcium chloride is added and the complex salt having the above proportions is precipitated; the reaction between calcium hydroxide, calcium chloride, sodium hydroxide and the alumino-acid may take place simultaneously, or the ammonium salt of the alumino acid may be used.
Patent GB-755686-A (GB)
Title: Improvements in or relating to dies for use in the extrusion of cable sheaths
Inventor: DUDDRIDGE GORDON KENNETH
IPC: B21C25/06
Filed: 1954-06-04
Abstract: 755,686. Extruding. STANDARD TELEPHONES & CABLES, Ltd. June 4, 1954, No. 16607/54. Class 83 (4). An extrusion press for sheathing. cables, particularly with aluminium or light metal alloy, and wherein the extrusion takes place in a direction at right angles to the direction of feeding of the extrusion material, has a die assembly with port holes 6<SP>1</SP>, 6<SP>2</SP>, 6<SP>3</SP>, &c. which are so shaped or dimensioned that substantially uniform flow around the cable forming die is produced, the dimensioning or shaping of the ports being obtained by removable sleeves 12 inserted into passageways, which are all of the same cross-sectional area, in the assembly. The sleeves may have different size bores and are inserted such that the sleeve with the smallest bore, thus providing the greatest restriction, is nearest the point of entry of the extrusion material. Alternatively the sleeves may have bores which are tapered longitudinally by varying amounts, Fig. 5 (not shown). The ports may be of rectangular cross-section instead of circular or a combination of circular and rectangular ports may be used.
Patent GB-1031472-A (GB)
Title: Overload protection circuits
Inventor: JONES PETER DAVID
IPC: H02H3/087
Filed: 1964-04-22
Abstract: 1,031,472. Controlled rectifier switching circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. April 22, 1964, No. 16626/64. Addition to 1,031,452. Heading H3T. [Also in Division H2] The D.C. overload protective arrangements of the parent Specification are modified by connecting the load 13 and resistor 15 in series to the cathode of the " gatecontrolled switch " 14 and by connecting the gate of the switch to the junction between the resistor and load.
Patent GB-450048-A (GB)
Title: Apparatus for filtering gases
IPC: B01D46/32
Filed: 1935-06-07
Abstract: 450,048. Filtering gases. FOURNIER, J., 7, Villa Logerais, Bois Colombes, Seine, France. June 7, 1935, Nos. 16634 and 16635. Convention dates, June 7, 1934 and June 5, 1935. [Class 8 (ii)] [See also Group II] A vertical filtering layer of sand or other granular filtering material is bounded on either side by a vertical series of horizontal slats 8, Fig. 2, the granular material being continuously discharged by means such as a screw in a channel 4 and replaced from a hopper 10. The slats may be oscillated about axes 11 and means may be provided for causing the slats to vibrate. Channels 4<1>, 4<2> may be provided for the discharge of surface sand or dust. The slats may have flanges 12 on their outer edges and the inner edges may be indented. Fig. 3 shows a number of parallel filter elements 17 in a casing 15 divided into compartments by partitions 18. There is a common inlet and outlet for gas under treatment, a common supply hopper A and a common discharge conveyer 29. The elements 17 may be built up of standard sections. Elements 17 may be arranged at an angle to one another as shown in Fig. 14. Fig. 13 shows diagrammatically an arrangement in which the sand from the hopper C is cleansed for re-use. The sand is passed by conveyers 4<1> on to an endless conveyer 43, provided with rakes or buckets, and falls from the conveyer through an opening 46 into a sinuous channel 45 where it is subjected to a current of gas from an inlet 48 which carries away the light impurities through a collector 49. The cleansed sand falls through an opening 47 and is lifted by the conveyer 43 to the hopper A. The gas used for cleansing may be taken from the current of gas under treatment and after use for cleaning it may be passed through a cyclone separator and returned to the filter inlet. The chain of the conveyer 43 may be utilized to operate hammers imparting vibrations to the filter screens. The Specification as open to inspection under Sect. 91 comprises also an arrangement in which a layer of sand is supported by an inclined series of horizontal slats, Fig. 1 (Cancelled), and an arrangement, Fig. 5 (Cancelled), in which a vertical layer of sand is bounded by two series of inclined slats, the slats on the outer surface having a curved profile. This subject-matter does not appear in the Specification as accepted.
Patent GB-1504728-A (GB)
Title: Preparation of unsaturated aldehydes
IPC: C07C45/00
Filed: 1975-04-22
Abstract: 1504728 Copper oxide TEIJIN Ltd 22 April 1975 [22 April 1974 (2) 30 Sept 1974] 16648/75 Heading C1A [Also in Division C2] Copper oxide is prepared by calcining copper metal, cupric hydroxide or basic copper carbonate in air. The copper oxide may be obtained in rod, net or pellet form by calcining the metal in like form. Alternatively where the copper oxide is obtained in powder form it may be moulded under pressure into pellets. See Examples 1, 6 and 9.
Patent GB-583976-A (GB)
Title: Weight-transferring vehicle coupling or hitch structure
IPC: B62D53/06
Filed: 1944-09-01
Abstract: 583,976. Weight-transferring vehicle couplings. SIMMONS, L. R. Sent. 1, 1944, No. 16693. Addition to 568,922. [Class 103 (v)] Part of the weight of a trailer 11 is transferred to a tractor 10 by a telescopic coupling tube 43 supplied with fluid from a source at constant pressure, the fluid entering or leaving a chamber 45 of the telescopic tube as the vehicles move over uneven ground whereby the transferred weight is maintained constant. The telescopic tube 43 comprises inner and outer parts 44, 42 connected by a universal joint 38 to the trailer and by a laterally hinged joint 46 to the tractor. A drawbar coupling 54 has a Y-shaped end 57 connected to the front axle 29 of the trailer and adapted to swivel the axle on a centre pivot 30, the other end of the coupling being connected by a universal joint 59 to the tractor. Fluid pressure at a constant pressure is supplied by a pump P on the tractor through a pipe 75 to the telescopic tube 43, the pump being included' in a closed circuit, Fig. 2, comprising a rotary valve V operated by a lever 79 on the tractor, a relief valve PV and a reservoir R. As shown, with no load on the telescopic tube 43, a free circulation of fluid takes place through pipe 65, port 71, recess 68 and port 72 in the valve, pipe 74, reservoir R and pipe 64 back to the pump P. When part of the weight of the trailer is to be transferred to the tractor, a plug 89 is rotated to adjust the pressure at which the relief valve will open in accordance with the amount of weight to be transferred and the driver operates the lever 79 to rotate the valve V anticlockwise so that the port 72 registers with the end of the pipe 65, the port 71 being blanked off by the valve casing. Pressure fluid then flows through pipe 65, port 72 and pipe 75 to the telescopic tube, any excess pressure passing through the relief valve PV back to the reservoir R. When the wheels pass over uneven ground such that the telescopic tube shortens, the excess fluid in the chamber 45 is driven through the relief valve PV back to the reservoir R. Similarly when the telescopic tube lengthens, fluid is pumped into the chamber 45.
Patent GB-779260-A (GB)
Title: Improvements in or relating to mounting arrangements for small electrical components
Inventor: ALLEN LESLIE JOHN
IPC: H04Q1/02
Filed: 1954-06-08
Abstract: 779,260. Automatic exchange equipment. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. June 6, 1955 [June 8, 1954], No. 16709/54. Class 40 (4). Rack mounting arrangements for similar individual equipments to which scanning potentials are applied in a co-ordinate manner has the individual equipments mounted in corresponding co-ordinate manner and a network of bare wires secured tautly within the rack and serving to apply pulses to the rows and columns of the individual equipments. The invention is illustrated by the equipment used in Specification 735,635. Individual line circuit equipments are mounted on U-shaped chassis 24 arranged on shelves in co-ordinate fashion, as shown in Fig. 1. Each chassis carries line transformer 31, inductor 33, capacitor, and several small components on insulated cards 35-37. All external connections to the line oircuit are made through vertical terminal pins 29 which are soldered to terminal pins 39 fed by wires from main rack cable 40. A network of horizontal and vertical bare wires 42-45 and 50, 51 is threaded through insulating blocks 49 and provide pulse transmission for the individual equipments. Wires 45, 50 are used for potential marking of the units and tens digits of the directory number, these markings being supplied by line scanning arrangements in common control equipment mounted on another rack with link circuits and power-pack; 100 sets of six cold-cathode tubes 54, 57 are mounted on an insulating plate 52, each set being appropriate to a trunk between the subscriber's line circuit equipment and the link circuit. Terminal pins 59 permit strapping between associated tubes in a column. Insulating strips 60 carry 7 bare conductors 64, each set forming 10 link routes multipled together and connected to a link circuit on the other rack. The strips 60 also carry resistors and capacitors 65, the latter associated with the corresponding set of tubes.