baber/WOPTO huggingface dataset:
Patent GB-908596-A (GB)
Title: Improvements in or relating to bistable switching circuits
IPC: H03K17/58
Filed: 1961-07-26
Abstract: 908,596. Tunnel diode bi-stable circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 26, 1961 [July 29, 1960], No. 27099/61. Class 40 (6). A bi-stable circuit comprises two tunnel diodes 1, 2 in series across a supply source e, the " peak " current of one diode being considerably less than that of the other but several times greater than the " valley " current of the other. To achieve these differences, diode 1 may be of gallium arsenide and diode 2 of germanium or silicon. The circuit may be used as an AND or " OR " circuit or in general as a coincidence gate. Restoration of the circuit condition may be effected by applying a pulse through a resistor 8 and pulses applied through a resistor 4 may prevent the operation of the circuit by interference in the absence of control pulses.
Patent GB-377499-A (GB)
Title: Improvements in generating high-pressure steam
IPC: F22B1/14
Filed: 1931-09-29
Abstract: 377,499. Water-tube steam boilers ; heating feedwater. PFLEIDERER, E., 11, Gartinweg, Ludwigshafen - on - Rhine, Germany. Sept. 29, 1931, No. 27112. [Classes 64 (i), 123 (ii), and 123 (iii).] Feedwater is heated in a vessel m by direct or indirect contact with superheated steam from a superheater c arranged in the boilercombustion chamber a, the boiler i itself being arranged behind the combustion chamber in the path of the furnace gases. Part of the superheated steam may be led off from the superheater for heating the feedwater, or, as shown, the whole of the superheated steam may be led into the vessel m, the desuperheated steam being passed through a second superheater p before entering the engine supply main. A supplementary combustion chamber e may be arranged between the main combustion chamber and the boiler i. Before entering the vessel m, the feedwater may be preheated in preheaters r<1>, r<2> by steam from the stages of the main turbine s. The supply of heating steam to the last preheater r<2> is controlled by a valve v operated by a thermal device t in the steam supply main. The heated feedwater is pumped into the boiler from the vessel m through a flue-gas heater h.
Patent GB-319009-A (GB)
Title: Improvements in and relating to pneumatic conveyors
IPC: B65G53/58
Filed: 1929-09-09
Abstract: 319,009. Baumgartner, K., and Patzold, F. Sept. 14, 1928, [Convention date]. Pneumatic conveyers.-Material is conveyed through a pipe FL composed of a number of disconnected aligned pipes by compressed air admitted to each component pipe by a nozzle S connected to a parallel supply pipe PL. The nozzle may be arranged at S1 at the beginning of a pipe section, at the middle S2 of a section, or near the end S3 of a section. The width of the slit sch, Fig. II, through which the air is admitted is varied by rotating the movable member R1 in the threadedend of the fixed pipe member R2. A compressed air nozzle, Fig. III, may be arranged at the end of a pipe section to supply air when necessary in a direction opposite to the forwarding direction to loosen stoppages. This nozzle may be closed by a slide U in order to increase the pressure in the pipe.
Patent GB-746016-A (GB)
Title: Amino diol compounds and method for preparing same
Filed: 1952-06-24
Abstract: The invention comprises threo aminodiol compounds of the general formula <FORM:0746016/IV(a)/1> (wherein R represents a hydrocarbon radical of 1-7 carbon atoms and X represents S or SO2), and the preparation thereof by deacylating their N-acyl derivatives (the acyl group being the residue of an aliphatic carboxylic acid), e.g. by treatment with hot mineral acid.  The products form salts with organic and inorganic acids, and their racemic forms may be resolved into optically active forms by means of optically active organic acids. In examples (1) dl-threo2 - acetylamino - 1 - (p - methylmercaptophenyl) - 1:3 - propanediol is heated with dilute hydrochloric acid, and the resulting dlthreo - 2 - amino - 1 - (pmethylmercaptophenyl) - 1:3 - propanediol is resolved with the aid of d - tartaric acid or d - N - benzoylthreonine; (2) (+) -, (-) - or racemic - threo2 - dichloroacetylamino - 1 - (p - methylsulphonylphenyl) - 1:3 - propanediol is hydrolysed as in (1) to (-) -, (+) - or racemicthreo - 2 - amino - 1 - (p - methylsulphonylphenyl)-1:3-propanediol.
Patent GB-373037-A (GB)
Title: Improvements in or relating to the manufacture of articles from cellulosic compositions
IPC: B29C53/80
Filed: 1931-10-02
Abstract: 373,037. Cellulose tubes. BRITISH CELANESE, Ltd., 22, Hanover Square, London. Oct. 2, 1931, No. 27420. Convention date, Oct. 2, 1930. [Class 99 (ii).] Tubes &c. of compositions having a basis of cellulose derivative are made by winding sheets of the material under pressure on to a mandrel and causing or aiding the layers to adhere by softening or a swelling agent. The latter may be applied to the cellulosic material before and/or during the formation of the tube, or the material may be caused to pass through a bath of the softening agent; alternatively the mandrel is disposed within the said bath. The wound tube is preferably completed by the application of heat and pressure. Two or more sheets of cellulosic material of differing composition may be employed in making a single tube. The invention is particularly applicable to the manufacture of the barrels of fountain pens and pencils.
Patent GB-1392388-A (GB)
Title: Machine tools for longitudinal working of metal sheet of  indefinite length
IPC: B23D35/00
Filed: 1972-06-13
Abstract: 1392388 Shearing; corrugating G ZAPPA and L ZAPPA [trading as ZAPPA FRATELLI DI GIUSEPPE & LEOPOLDO] 13 June 1972 [19 June 1971] 27487/72 Headings B3W and B3E Sheet metal working apparatus comprises at least two pairs of spindles, 14a, 14b supporting rotary tools, such as an assembly 28 of disc cutters spaced by sleeves, and supported by a rotatable turret 12 which can be held in at least two positions, in each of which a pair of spindles is in working position, spindles 14b in Fig. 1, and the overall other pair of spindles is in a tooladjustment, replacement &c. position. The ends of the working spindles remote from the turret are supported by a frame 16, which is slidable on a base-plate 10 to release the spindles and allow rotation of the turret. Mounted on the frame 16 is a motor 18 for varying the vertical spacing between the spindles by means of a shaft 20 and conventional spindle mountings. The turret 12 is clamped in its selected position by fluid-operated tapered pin 38 and a houses a gear drive 40 for selectively rotating whichever pair of spindles is in the working position. In an alternative rotary drive arrangement, Figs. 4A and 4B (not shown), sliding movement of the frame 16 away from the turret disconnects the drive by disengaging dog clutches (44) while leaving the spindles supported by bearings (48). In a further embodiment, Figs. 10 and 11 (not shown), the turret is rotatable about a horizontal axis, the spindle ends passing through a pit (F) during movement between working and tool-adjustment &c. positions. The disc cutter assembly 28 may be replaced by corrugating tools.
Patent GB-769001-A (GB)
Title: A periodically actuated contacting device for mechanical rectifiers
IPC: H02M1/26
Filed: 1953-10-07
Abstract: 769,001. Rectifying. LICENTIA PATENTVERWALTUNGS-GES. Oct. 7, 1953 [Oct. 9, 1952], No. 27545/53. Class 38 (2). A multi-phase converter comprises one or more contact devices each of which consists of six contacts 27 which co-operate with alternating current input conductors 13 ... 18, each two of the contacts coacting with one of the direct current output conductors 21 ... 26, the output conductors 21, 22, 23 or 24, 25, 26 being connected together to form one terminal of the direct current output from the converter. When the supply is by way of a mesh connected transformer, the secondary terminals 1 ... 6 thereof are connected by way of commutating reactors 7 ... 12 to two contact devices 19, 20, mechanically coupled together, the terminals 30, 31 of which form the positive and negative direct current terminals respectively. When the supply is from a star connected transformer only one contact device is necessary, the negative direct current terminal being formed by the star point of the transformer. In another embodiment using a star-connected transformer, each commutating reactor is provided with two windings which are connected to the two alternating current input conductors associated with a direct current conductor. In this case two contact devices are used, all six direct current conductors being connected together to form one direct current terminal.
Patent GB-986695-A (GB)
Title: Improvements in pistons for rotary-piston engines
IPC: F02B53/00
Filed: 1962-07-18
Abstract: 986,695. Rotary-piston engines. GOETZEWERKE FRIEDRICH GOETZE A.G. July 18, 1962 [Aug. 16, 1961], No. 27653/62. Heading F1F. To reduce wear and friction between the end faces and end seals of a rotary piston and the housing in which it rotates the piston end faces or the housing side walls are provided with surfaces which are slightly inclined in the direction of rotation of the piston so that lubricant is forced into the narrowing gap between the piston and the side walls. As shown in the Figure, representing three embodiments, the invention is applied to a trochoidal type engine having a triangular piston having radial sealing elements 6, 7, 8 extending lengthwise of the piston, end sealing strips 10, 11, 12 therebetween and an end sealing ring 13 or 14 surrounding the piston bore 2. In the top portion of the figure, surfaces 15 located within the sealing ring 13 and have inclined ramps 16 leading up to them and projecting above the piston end face 9. In the bottom portions of the Figure, the surfaces are located between the sealing strips 10, 11, 12 and the sealing ring 14. The left hand portion shows an inclined recess 17 and the right hand portion an inclined ramp 19 leading up to a projection 20.
Patent GB-768551-A (GB)
Title: Improvements in recovery of polycarboxylic acid anhydrides
Inventor: LANDAU RALPH
IPC: C07C51/48
Filed: 1953-10-08
Abstract: Maleic anhydride or phthalic anhydride are recovered from a dilute or gaseous mixture containing either one or both of the anhydrides by scrubbing only the maleic anhydride or only the phthalic anhydride vapour from the gaseous mixture with dibutyl phthalate as scrubbing liquor, stripping the absorbed anhydride from the resulting solution comprising only one of the said anhydrides at a temperature in the range of 75 DEG  to 250 DEG  C. and an absolute pressure in the range of 10 to 150 mm. mercury and then subjecting the partially stripped solution to further stripping under more severe conditions at a temperature of about 75 DEG  C. to 250 DEG  C. and an absolute pressure in the range of about 12 to 60 mm. mercury, recycling the anhydride product from the second stripping operation to the first stripping operation, and recycling the stripped solvent from the second stripping operation to the anhydride absorption step.  The specific procedures referred to and the examples given are identical with those described in Specification 763,339.
Patent GB-363994-A (GB)
Title: Improvements in or relating to screening plants
IPC: B07B1/18
Filed: 1930-09-18
Abstract: 363,994. Sifting-apparatus. SHARP, A., 64, Hospital Street, Nantwich, and ASHTON, H. A., Rose Cottage, Canal Side, Black Road, Macclesfield, both in Cheshire. Sept. 18, 1930, No. 27856. [Class 117.] Apparatus for screening stone, gravel, &c., consists of a frame 9, 10, Fig. 1, oscillating about a substantially horizontal axis, and carrying two concave screens of perforated metal, wire mesh, &c., the upper screen 32 functioning to divide the charge into two portions, the smaller sizes falling on to a lower series of graded screens 35, and the tailings being conveyed by the dead-plates 33 and shoot 43 to a further set of grading screens 44 in line with the screens 35. Alternatively the screens 44 may be made as a continuation of the dead-plates 33. The frame has stub shafts 14, 22 mounted in bearings in uprights 5, 6, and may be further supported by arcuate runners 39 working on rollers 40a. The driving means consists of an arm 15, having a slot in which is adjustably secured the end of a link 17 of variable length connecting it to a crank shaft 18. To prevent over-running of the frame at the ends of its swing, a collar 31 carried by the shaft 22 has surface ribs which are pressed by a spring into engagement with recesses in the surface of the bearing member.
Patent GB-1117621-A (GB)
Title: Improvements in or relating to electrical components
IPC: H01G2/00
Filed: 1965-07-01
Abstract: 1,117,621. Two-part couplings. CTS CORPORATION. 1 July, 1965 [1 July, 1964], No. 27895/65. Heading H2E. [Also in Division H1] In a circuit module comprising electrical components 11 disposed on a ceramic substrate 12, terminal pins 22 are disposed in holes in an edge surface 18 of the substrate and are electrically connected to the components 11. The cross-section of the holes is round, or preferably square, and should not exceed half the width of the substrate; the holes may taper inwardly, and the inner ends of pins 22 may be provided with barbs. The arrangement shown comprises conductive paths 21, conductive pads 27, and metallized hole-walls, all produced by screening on a composition of noble metal powder in a vitreous matrix and subsequent firing, as well as thin film capacitors 11a and resistors 11b, and a diode 11c. The holes are formed in recesses 25 in the edge surface 18, which also comprises a pair of projecting standoff spacers 19, 20. After the pins 22, which are preferably tinned and may have a 90-degree bend, have been inserted in the holes they are connected to pads 27, as by dip-soldering. The components 11 are covered by a protective coating 29 of glass or organic compound; in addition the entire module (except the pins) may be encapsulated, and an identifying codemark may be stamped on the outside. One of the ridges 26 between the recesses 25 may be indexed to orient the module when it is plugged into a mounting panel.
Patent GB-446418-A (GB)
Title: Improvements in the froth flotation of ores
IPC: G07B13/00
Filed: 1934-09-29
Abstract: Ores are concentrated by froth flotation by the use, in conjunction with a collecting agent, of a frothing agent which comprises a hydrocarbon and one or more aliphatic alcohols having from 7-10 carbon atoms and a boiling point between about 133 and 250 DEG  C. The alcohols which may be used include the primary and secondary and in some cases the tertiary heptyl, octyl, nonyl, and decyl alcohols, and preferably a mixture containing octyl and nonyl alcohols and a preponderance of heptyl alcohol is employed. The hydrocarbon preferred is either "naphtha," i.e. a saturated fraction obtained from petroleum oils and boiling between 300 and 500 DEG  F., or a hydrocarbon of the terpene series, e.g. dipentene, but the use of benzol, toluol, xylol, and solvent naphtha is also referred to.  The amount of alcohol in the mixture may vary from 50-90 per cent.  The concentration of a lead ore is described, the frothing agent consisting of a mixture of alcohols including methyl hexanol, di-methyl hexanol, methyl heptanol and di-methyl heptanol and either naphtha or dipentene, and the collecting agent being ethyl xanthate. The use of still bottoms from the distillation of petroleum hydrocarbons, as claimed in Specification 441,976, is excluded from the scope of the invention.
Patent GB-1274438-A (GB)
Title: Improvements in or relating to racks or the like constructional units
Inventor: BIFFAR OSKAR DANIEL
IPC: A47B87/02
Filed: 1970-06-10
Abstract: 1,274,438. Cabinets etc.; joints. O. D. BIFFAR. June 10, 1970 [Dec. 2, 1969; March 19, 1970], No.28015/70. Headings A4B and A4H. A rack includes a rectangular, open ended, box-like unit made from four L-shaped corners components 9 each having two, mutually perpendicular, planar arms 1, the free ends of the arms 1 of each of the four components being joined by connectors, either directly or indirectly, to free ends of the arms of two others of the four components 9 whereby the box-like unit is bounded wholly or to a major extent by the corner components 9. The free ends of the arms 1 are formed with circular openings 4 communicating with the free edges of the ends by means of slots 3. The free ends may be inter-connected by a threaded pin 11 located in aligned slots 3 and threaded at its ends into circular discs 14 located in the openings 4 and bearing on washers 15. Alternatively, the free ends may be interconnected by planar members 6, 7 also formed with slots 3 and openings 4 with receive the pin 11 and discs 14. Further pins 16 are located in bores in the abutting edges of the components. The components also include bores 5 to receive screws by which units may be inter-connected. A rack assembly may include U-shaped components 10.
Patent GB-1472497-A (GB)
Title: Apparatus for plasma treatment of metals
IPC: B23K9/10
Filed: 1975-07-03
Abstract: 1472497 Transformers INST ELEKTROS IM EO PATONA AKAD NAUK UKRAIN SSR 3 July 1975 28089/75 Heading HIT [Also in Division H2] A transformer for suuplying forward and inverse arc currents in apparatus for the plasma treatment of metals, comprises secondary windings 3-6, magnetic shunts 7 provided with bias windings 8 and stray flux concentrators 9 provided with bias windings 10. A D.C. source E1 supplies current to the bias windings 8 to change the magnetization of the shunts thereby controlling the current supplied by the secondary windings 3, 5 to the forward current arc. A D.C. source E2 supplies current to the windings 10 to saturate the stray flux concentrators 9 thereby controlling their magnetization to control the current supplied by the secondary windings 4, 6 to the inverse current arc. The transformer may be single or three phase and includes a magnetic core 1 having three limbs at the top and bottom of which are yokes formed of laminated hexagons. The windings 3, 4 and the primary winding 2 are wound on the lower portions of the limbs whilst the windings 5, 6 are wound on the upper portions of the limbs. The windings 6 are embraced by the stray flux concentrators 9 in the form of U-shaped magnetic cores provided with the bias windings 10. In a modification the yokes are star shaped.
Patent GB-836990-A (GB)
Title: Improvements in or relating to material handling chutes
Inventor: ENNALS EDWIN GEORGE
IPC: B65G69/18
Filed: 1955-10-03
Abstract: 836,990. Extensible shoots. INTERNATIONAL COMBUSTION (HOLDINGS) Ltd. Jan. 3, 1957 [Oct. 3, 1955], No. 28146/55. Class 78 (1). An extensible shoot comprises a hopper 2, sections 3 which are formed of chain mail or woven metal, and a water trough 7 which provides a water curtain flowing down the sections to prevent escape of dust from material passing down the shoot. As shown, cables 10 suspend each section, the lowermost section being raised by a winch through cables 16.
Patent GB-738299-A (GB)
Title: Cleaning swabs and holders therefor
IPC: A47K11/10
Filed: 1952-11-07
Abstract: 738,299. Pads. PERSONAL PRODUCTS CORPORATION. Nov. 7, 1952 [Nov. 9, 1951], No. 28157/52. Classes 19 and 61. A device for cleaning toilet bowls and the like comprises a disposable swab of tubular shape which ships on to the head of a holder. The swab, Figs. 1, 5, is constructed from a pad comprising a filler 11 of soft absorbent material, readily disintegrable when wet, and an outer wrap sheet 12 of paper strong enough to withstand disintegration during use. The longitudinal margins of the sheet 12 are folded over so as to overlap and enclose the filler 11, the overlapping faces being secured with watersoluble adhesive, and the pad so formed is rolled into a tube, Fig. 5, and the abutting edges 13 similarly secured with adhesive. In use, the swab is forced on to the head 21, Fig. 6, of a holder, which is provided with projecting helical corrugations. A pair of strings 25, are built into the swab to provide reinforcement and render the attachment to the handle more secure.
Patent GB-652141-A (GB)
Title: An adjustable tilting icing table
IPC: A21C15/00
Filed: 1948-10-29
Abstract: 652,141. Rotatable stands. CALDWELL, W. J. Oct. 29, 1948, No. 28190. [Class 52 (iii)] [Also in Group VI] A stand for holding cakes for icing has a rotary platform A mounted on an arm C angularly adjustable on a base plate B which is provided with a slidable or foldable extension D which, when withdrawn, steadies the base against tipping. The platform carries slidably adjustable radial stops E<SP>2</SP> reversable to accommodate cakes larger than the platform, and screwed pins F which enter the underside of the cake.
Patent GB-518402-A (GB)
Title: Improvements in and relating to electric motor control systems
Filed: 1938-09-28
Abstract: 518,402. Control of two motors. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 28, 1938, No. 28232. Convention date, Oct. 1, 1937. [Class 38 (iii)] In a system in which loads 10, 12 are driven synchronously by being coupled mechanically to induction machines 13, 14 which are interconnected electrically, and the load 10 is driven at any desired speed by a motor 11, provision is made for accelerating the load 12 from rest when the motor 11 is already running at the desired speed. If the machine 13 is being rotated in the same direction as its. primary field, then after closing switch 16 resistance in the interconnection of the secondaries is cut out in steps by contactors 29, 30, 31. If the machine 13 is being rotated in the opposite direction to its primary field, then it is necessary for the accelerating resistance to be included in the primary interconnection instead of the secondary.
Patent GB-1432465-A (GB)
Title: Seal ring assembly
IPC: F16J9/28
Filed: 1973-06-14
Abstract: 1432465 Seal assemblies A-T-O Inc 14 June 1973 [12 July 1972] 28374/73 Heading F2T A seal assembly comprises a pair of non- deformable rings 24, 26, e.g. of nylon, located in a groove 22, and a deformable ring 28, e.g. of neoprene, the rings 24, 26 having radially inner surfaces 40 of minimal axial length to limit the extent of clearances 58 into which the ring 28 can be deformed, to prevent its permanent distortion. The rings 24, 26 are preferably split, having means defining a lap joint, Fig. 5 (not shown), and may contain a filler of glass fibres and molybdenum disulphide.