baber/WOPTO huggingface dataset:
Patent GB-1317931-A (GB)
Title: Pressure-sensitive adhesive compositions
IPC: C09J7/38
Filed: 1970-04-28
Abstract: 1317931 Pressure sensitive adhesive coating ROHM & HAAS CO 28 April 1970 [28 April 1969 16 March 1970] 20373/70 Heading B2E [Also in Division C3] Substrates such as rubber or synthetic rubber sheet, decorative laminates, polymethylmethacrylate, P.V.C., poly(ethylene glycol terephthalate), nylon, phenol formaldehyde resins, melamine-formaldehyde resins, rayon, silk, leather, linoleum, asphalt tile, ceramic tiles, mineral wool, asbestos, concrete, copper, zinc, chromium, nickel walls, ceilings and wood veneers, are provided with a pressure sensitive layer by coating them with a composition from which the liquid is removed after coating and which is heated after coating, the composition comprising (A) a dispersion or solution in a liquid medium of an addition polymer, said polymer being obtained from a monomer charge comprising (i) 0.3-35 p.b.w. per 100 p.b.w. of total monomer charge, of one or more ethylenically unsaturated carboxylic acids, (ii) one or more monoethylenically unsaturated compounds whose homopolymer has a Tg not exceeding 0C and optionally (iii) one or more compounds as in (ii) whose homopolymer has a Tg above 0C, the amounts of monomer (ii) and (iii) (if used) being such that the overall polymer has a Tg not exceeding 0C, and (B) a compound of a polyvalent metal of group IB, IIA, IIB, IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIB, or VIII of the mendeleef Periodic Table, said compound being at least partially soluble in the liquid medium and the equivalency ratio of metal ions to carbonyl groups in the polymer being 0.01:1 to 2.0:1. A vast number of suitable metallic compounds (B) are listed, including oxides, simple ionic salts, complexes and chelates, e.g. acetates, benzoates, NH 3  and amine complexes, amine chelates, carbonates, glycollates salicylates &c. Metals from groups IIB and IVB are preferred. In the examples, aqueous compositions comprise (1) copoly (butylacrylate/methacrylic acid) emulsion and ZnO; (2) polymer emulsion of (1) and zinc glycinate; and (3) the emulsions of examples (1) and (2) but with zinc alaninate and zirconium alaninate. These compositions are coated on poly(ethylene glycol terephthalate) film. To protect the adhesive before use, the coated substrates are provided with a protective release backing.
Patent GB-1083674-A (GB)
Title: Improvements relating to mining machines
Inventor: FINDLAY JOHN
IPC: E21C25/52
Filed: 1963-05-23
Abstract: 1,083,674. Mineral-mining installations. MAVOR & COULSON Ltd. May 19, 1964 [May 23, 1963], No. 20527/63. Heading E1F. Part of the troughing of a scraper chain conveyer over which a disc type mineral mining machine is reciprocated to and fro along a face is caused to extend upwards and rearwards to extend above a further conveyor for receiving mineral as it is discharged from the scraper chain conveyer.
Patent GB-848760-A (GB)
Title: Improvements in or relating to vaned rotary pumps and/or motors
IPC: F01C21/08
Filed: 1957-06-28
Abstract: 848,760. Rotary pumps and motors. FRASER, A. June 27, 1958 [June 28, 1957], No. 20583/57. Class 110 (2). In a pump or motor of the outwardly-sliding vane type, each vane 30 comprises a sandwich of the parts 36 separated by a layer of rubber or other resilient material 37, bonded to the parts 36 and in shear so that the material 37 urges the two outer parts in opposite directions to provide sealing contact with the bore of the working chamber, The stator ring 10 and the side walls of the working chamber are lined with self-lubricating material such as polytetrafluorethylene. Liquid enters from an inlet 22, hollow shaft 21, radial ducts 28, 27 into working chambers 26, and is discharged through grooves 31 and ducts 32 into channels 33, annular ducts 35 to, discharge ports 34. The high pressure liquid presses under the vanes to assist sealing the tips. Specifications 843,188, 848,761 and 33131/56 are referred to.
Patent GB-658601-A (GB)
Title: An improved machine for making cores or other articles by blowing sand or the like into a box or die
IPC: B22C15/24
Filed: 1949-08-08
Abstract: 658,601. Machines for moulding pottery. GIBSON, W. A. Aug. 8, 1949, No. 20584. Convention date, Dec. 10, 1948. [Class 87 (ii)] [Also in Group XXII] A machine for making sand moulds, pottery, &c. by blowing sand or the like into core box, mould, &c. has operating means 37 which by a single movement raise the machine table 19, i.e. to clamp said core box &c. and then operate the blower, not shown. The means 37, which may be moved by a tubular handle 38 or by a pedal or fluid pressure or electrical means, is integral with a structure 10, 36 pivoted at 15 to two cranked levers 14, 12, each pivoted to the machine frame at 17. Springs 28 cause the structure 10, 36 and levers 14, 12 to turn as one about the pivots 17, when the handle 38 is pressed down, wheels 20 carried by the levers 14, 12 lifting the table 19 until the box &c. is clamped. Then the levers 12, 14 are arrested and the structure 10, 36 turns, clockwise, about the pivots 15, compresses springs 28 and actuates the valve 32 supplying the blower by means of a pivoted projection 26.
Patent GB-862479-A (GB)
Title: Improved gas turbine engine
Inventor: GRIFFITH ALAN ARNOLD
IPC: B64D27/10
Filed: 1958-06-26
Abstract: 862,479. Aircraft. ROLLS-ROYCE Ltd. June 18, 1959 [June 26, 1958], No. 20596/58. Class 4. [Also in Group XXVI] A delta-shaped supersonic aircraft 25 has two banks of engines 10 each bank comprising six engines arranged one above the other. Air from the engines which is bled from the compressor discharges is collected in a casing 22 and led through trunking 27 and conduits 28, 29 to a number of units 30 each of which includes a turbine and a lifting fan or compressor. The air may also be led through the trunking 27 to blown flaps.
Patent GB-1148337-A (GB)
Title: The preparation of anhydrous monomeric glyoxal
Inventor: DINWOODIE ANDREW HARPER
IPC: C07C45/81
Filed: 1967-05-03
Abstract: 1,148,337. Anhydrous monomeric glyoxal. IMPERIAL CHEMICAL INDUSTRIES Ltd. 8 April, 1968 [3 May, 1967], No. 20611/67. Heading C2C. Anhydrous monomeric glyoxal is prepared by heating hydrated glyoxal suspended in a silicone fluid at a temperature in the range 120-185‹ C. to evaporate a mixture comprising glyoxal and water vapour and removing the water from the vapour mixture e.g. by condensation. The vapour may be dried further by a molecular sieve or a dehydrating agent. The process may be carried out at reduced pressure.
Patent GB-207135-A (GB)
Abstract: 207,135. Tillman, F. J. July 10, 1922. Indicating.-A device for indicating the price of yardage comprises a quantity scale, a grade scale, and a movable price indicating element related to both scales. The scale 7 is provided with figures indicating the price per yard of different grade materials. The scale 6 indicates yards and eighths of yards up to ten yards. The chart 10 mounted on rollers and passing between the fixed scales 6, 7 is provided with a plurality of prices corresponding to the eighth of yards measurements of the scale 6, there being a diagonal line 125 between the bottom left-hand and top right-hand corners of the chart. In operation, the chart 10 is caused to travel until the upper right-hand end of the visible part of the diagonal line 125 indicates the price per yard' of the particular grade material under consideration; for instance the price 89 cents per yard in Fig. 1. If now the desired quantity on scale 6, for instance nine yards, be aligned with the row of figures of the double column located in the sight opening 8, the total charge will be seen to be 8.01 dollars. The prices of odd inches up to three are given at the end of the opening run at the right hand in Fig. 1. Specification 208,183, [Class 106 (i), Calculating &c.] is referred to.
Patent GB-189410-A (GB)
Title: Improvements in or relating to the treatment of magnetic materials
IPC: C22F1/10
Filed: 1921-07-16
Abstract: 189,410. Western Electric Co., Ltd., (Western Electric Co., Inc.). July 16, 1921. Drawings to Specification. Alloys.-A nickel-iron alloy having high magnetic permeability at low magnetizing forces and a low hysteresis loss contains 70-80 per cent nickel, maximum permeability resulting when the nickel content is 78.5 per cent. The magnetic properties of the alloy are improved by heat treatment. Specifications 188,688 and 189,075, [Class 39 (iii), Heating by electricity], are referred to.
Patent GB-457026-A (GB)
Title: Improvements in or relating to single bellows gas meters
IPC: G01F3/22
Filed: 1936-07-28
Abstract: 457,026. Gas meters. PINTSCH AKT.- GES., J., 71, Andreasstrasse, Berlin. July 28, 1936, No. 20898. Convention date, Aug. 22, 1935. [Class 54] In a single diaphragm gas meter in which the valves carried by the spindle 3 are normally reversed at the end of each stroke of the diaphragm by a spring 14 arranged between the valve operating lever 1 and a control lever 12 operated by the diaphragm, the valves are raised from their seatings should they stick by the continued movement of the lever 12 by the diaphragm causing a bracket 16 or 17 on the lever 12 to engage a pin 18 on the lever 1. The brackets 16, 17 may be of adjustable length. Alternatively the lever 12 may be formed with an elongated slot engaging the pin 17 if the lever 12 moves beyond the normal valve-reversing positions. The normal valve-reversing positions are controlled by the engagement of a snap member 5 carried by the lever 1 with a snap member 8 on a spindle 9 which is operated by a lever 10 attached to the diaphragm and is connected to the lever 12 by a link 13. Specification 368,008 is referred to.
Patent GB-817906-A (GB)
Title: Improvements in or relating to semiconductor circuit controlling devices
IPC: H01L29/00
Filed: 1956-07-06
Abstract: 817,906. Semi-conductor devices. WESTERN ELECTRIC CO. Inc. July 6, 1956 [July 13, 1955], No. 21016/56. Class 37. In an avalanche breakdown negative resistance diode comprising a wafer of semiconductor material with a pair of semiconductor zones in rectifying contact with its opposite faces, one of the zones which is of greater lateral extent than the other and has appreciable lateral resistance is provided with an electrode over only a limited part of its surface. In one embodiment (Fig. 1) the electrodes are zones of P-type material on an N-type base body, connection 17 being made to the larger P-type zone 12 only at its centre. In operation the external bias is such as to forward bias the large area junction 15, and to reverse bias the junction 16. When the bias is small the emitter emits minority carriers uniformly throughout its area. Under these conditions the average α is low since a high proportion of the emitter current has to flow from the periphery of the emitter to the collector and hence suffers appreciable losses by recombination. However, when the bias is high, e.g. sufficient to produce avalanche breakdown, an appreciable lateral potential gradient develops in the emitter zone so that the forward bias at the periphery of the emitter is less than that at the centre. Consequently the bulk of the emitter current is from the centre for which α is high thus giving a higher average value of α than for the low current condition. The device shown (Fig. 1) is made by heating a masked monocrystalline N-type Ge wafer in aluminium vapour at 400‹ C. for 5 minutes followed by a brief rise to 700‹ C. and cooling over a 5-10 minute period to give an alloyed P-type Ge layer extending over one whole face of the wafer. The centre of the face is then masked and the aluminium and excess regrown P-type Ge removed from the rest of the surface by etching in caustic soda to give a region the resistance from periphery to centre of which is a few hundred ohms. Alternatively a similar process may be used to give a dumb-bell-shaped P-type region to only one end of which external connection is made. The dumb-bell-shaped region has the advantage that the change of average α with current is greater than for the circular region if the end to which connection is made is directly opposite the collector region which may be made by a similar alloying process. The variation of α with current may be increased further by providing a lateral resistivity gradient in the base region adjacent the emitter junction. The resistivity is lowered towards the edge of the emitter so that the fraction of the total emitter current formed by minority carriers injected into the N- type region is less. Si, Ge-Si alloys and Am B v  compounds may be used instead of Ge and a NPN structure used instead of the PNP structure described though the former is preferred on account of the superior avalanche multiplication available in N-type material. Specification 790,387 is referred to.
Patent GB-859217-A (GB)
Title: Rotary tipper for wagons
Inventor: OBERING AUGUST HARTMANN
Filed: 1957-07-03
Abstract: 859,217. Wagon tippers. MONNINGHOFF, S., [trading as MASCHINENFABRIK MONNINGHOFF]. July 3, 1957, No. 21021/57. Class 78 (4). A piston 18 working in an arcuate cylinder 14 is connected to drive the tipper shown by a piston-rod formed of articulated links 15 guided in the cylinder by rollers 22. The rollers 22 preferably have resilient tyres. The tipper returns to its upper position by gravity, but where it turns through more than 180 degrees a ram 20, 21 effecting the initial return movement may be combined with a stop 19 limiting tipping.
Patent GB-907045-A (GB)
Title: Improvements in or relating to pneumatic tyres for vehicle wheels
IPC: B60C9/20
Filed: 1960-06-15
Abstract: 907,045. Pneumatic tyres. PIRELLI S.p.A. June 15, 1960 [Nov. 10, 1959], No. 21034/60. Class 144 (2). In a breaker for a pneumatic tyre in which two superimposed layers 2, 3 of reinforcing cords constitute at least the radially outermost portion of the breaker and the cords in each layer are parallel to one another and inclined to the mid-circumferential plane of the breaker, the cords of the radially outer layer 2 are inclined to the cords of the underlying layer 3 at an angle which is greater than the angle between the cords of each layer and the midcircumferential plane, the medial line of the radial outer layer 2 is coincident with the mid circumferential line of the breaker and the radially outer layer 2 has a width L<SP>1</SP> which is less than half the width L<SP>11</SP> of the underlying layer 3. The width L<SP>1</SP> of the cords of the outer layer 2 is between a quarter to a half the width of the underlying layer 3. The cords of the outer layer 2 may be symmetrically inclined to the cords of the underlying layer 3 with respect to the mid-circumferential plane of the breaker or alternatively the cords of the outer layer 2 may be inclined at a smaller angle α than the angle # of the underlying layer 3 to the mid-circumferential plane of the breaker. The difference between the angles α and # between the cords of the layers 2 and 3 and the mid-circumferential plane of the breaker is below 15 degrees. One or more further layers 4, Fig. 5, may be provided below the layers 2, 3 and the cords in each such layers 4 are parallel to one another and inclined to the mid-circumferential plane of the breaker, which angle or angles may be the same as or smaller than the angles of inclination of the cords of the outer layer 2 or layers 2 and 3. The carcass 1 may be constituted by a single or multiple ply of radially disposed cords or at least one pair of plies in which the cords of one ply are symmetrically disposed to the cords of the other ply.
Patent GB-1118102-A (GB)
Title: Anchor insert for embedment in a concrete slab and cable pick-up unit therefor
IPC: E04G21/14
Filed: 1966-05-12
Abstract: 1,118,102. Building blocks; hooks. SUPERIOR CONCRETE ACCESSORIES. Inc. 12 May, 1966 [19 Oct., 1965], No. 21079/66. Headings E1B and E2A. [Also in Division B8] An anchor insert embedded in a concrete slab for co-operation with a pick up unit on the end of a lifting cable 60 comprises two pairs of spaced parallel rods 14, 16 crossing each other and welded together, the ends of the rods 14 being bent downwardly to support the insert before embedment and the medial portions of the rods supporting a cylindrical cage via flanges 51 thereon. The cage is formed from a cylindrical portion 44 telescopically received in a cup portion 42. The pair of rods 16 pass through apertures 50 in the cage and their medial portions 30 are formed as inverted V's. Elastomeric sleeves 28 cover the ends of the rods 14 where they are exposed to atmosphere after embedment in the slab. During pouring of the concrete S, a blanking block is placed above the cage to form a cylindrical passage down to the insert after embedment. The pick-up unit comprises a T-head 68 on the end of the cable 60 which is passed down between the medial portions 30 and turned through 90‹ whereupon recesses in the T-head engage the portions 30. Their engagement is maintained by the pressure of a spring 72 on a washer 74 slidable on a shank 66 of the T- head. A mushroom shaped head 80 slideable on the cable 60 is received in the cage approach passage and rests on a resilient pad 90 on top of the slab.
Patent GB-705715-A (GB)
Title: Improvements in and relating to paper making or like water-extracting machines
IPC: D21F1/02
Filed: 1951-09-06
Abstract: 705,715. Supplying pulp to paper-making machines. VOITH GES., J. M. Sept. 6, 1951 [Sept. 11, 1950; Aug. 23, 1951], No. 21100/51. Class 96 Paper pulp from the refiners or screens &c. is delivered by pipes 1, 2, Figs. 1 and 3, to opposite ends of a mixing box 6 the pulp flowing along tapered passages 3, 4, and sidewise through gaps 23, 24 beneath, mid-way up, or at the top of partitions 21, 22 into a mixing compartment 5 at the top of which is a divergent conduit 7 leading to the wire-cloth of a Fourdrinier paper-making machine or to the vat of a cylinder mould machine. Air traps 15 with valves 16 may be provided, or there may be slots above 'the partitions 21, 22 for the passage of air. In modifications (1) the compartment 5 may contain a perforated flow-evener roll, and (2) the walls of the conduit 7 extend downwardly into the compartment 5.
Patent GB-1169711-A (GB)
Title: Improvements relating to the Measurement of Resistivity
Inventor: MOORE GEOFFREY ROBERT
IPC: G01N27/04
Filed: 1966-05-12
Abstract: 1,169,711. Measuring resistivity. SOUTH LONDON ELECTRICAL EQUIPMENT CO. Ltd. May 12, 1967 [May 12, 1966], No.21150/66. Heading G1U. In measuring resistivity, e.g. of a semiconductor material f, current pulses are passed through the material via probes i and the voltage between two other probes d is converted into a reading of resistivity in a digital voltmeter c. The leading edge of each pulse in a pulse train 2 supplied by a pulse generator a triggers a second pulse generator g which produces pulses longer than the pulses 2 but shorter than the recurrence period thereof, and the output pulses of the generator g cause a unit h to deliver pulses of stabilized constant current of the same duration to the probes i. The stabilized current is produced by a comparator circuit l which equalizes the current across a precision resistor m and a stabilized voltage V derived from a potential divider j and a Zener diode. The voltmeter c is respectively triggered and reset by the leading and trailing edges of the pulses in a pulse train 1, this being the inverse of train 2, and averages out the voltages across the probes d.
Patent GB-1313733-A (GB)
Title: Rotary electric machine
IPC: H02K1/14
Filed: 1970-05-01
Abstract: 1313733 Core constructions HITACHI Ltd 1 May 1970 [2 May 1969] 21166/70 Heading H2A In a laminated stator core S, Fig. 7, having salient poles P each formed with integral pole tips 15, 16, the tip 16 on each pole which extends in the direction of reversal of the armature is of larger cross-section than the tip 15 to reduce distortion of the flux by armature reaction. Additionally or alternatively, the part of the stator core adjacent the tip 15 may be increased in cross-section and that adjacent the tip 16 reduced in cross-section, as shown in Fig. 9. A notch 19 is provided in the outer periphery of each pole, which notch may be displaced towards the tip 16 to produce an increase in the cross-section of the flux path on the side of the pole adjacent tip 15 (Fig. 10, not shown). In a further modification, (Fig. 11, not shown), the air gap under the tip 15 is greater than that under the tip 16.
Patent GB-335299-A (GB)
Title: Improvements in or relating to apparatus for cooling waste furnace gases
IPC: C21B9/16
Filed: 1929-07-10
Abstract: 335,299. Overmann, O. July 10, 1929. Condensers, atmospheric and like.-An air cooler for blast furnace gases comprises vertically or horizontally extending columns or gas passages within which a number of parallel air passages extend, having in cross-section the shape of an elongated rectangle or oval. The cooling towers 2 of rectangular section are connected by a doublewalled bottom 4 which is sloped at two sides. Air passages 5, Fig. 3, open outwardly to the atmosphere at the top and communicate with the space between the doublewalled base. Gases to be cooled enter by a branch pipe 3 and are drawn through the apparatus either by natural draught or by the use of a fan. The heated air in the elongated passages rises and the air current produced may be increased by a fan 7; dust deposits collect at 4. Iron or brick towers may be used. In a modification, the towers may be arranged so that the gases and cooling air flow in a horizontal direction. In a further modification, several coolers are arranged in series the air passing through them on the countercurrent system. Specification 142,938 is referred to.
Patent GB-303210-A (GB)
Title: Improvements in or relating to potato and like cleaning or grading machines
IPC: B07B1/18
Filed: 1928-06-12
Abstract: 303,210. Clark, A. T., and Shepherd, F. W. H. June 12, 1928. Rotary sieves. - A rotary screen for grading and cleaning potatoes consists of a number of screening sections 44 secured around a series of spider arms 45 by means of clamping devices provided at the ends of some of the spider arms and adapted to draw the edges of the screen sections together. In the construction shown, the clamping devices consist of pivoted jaws 49 drawn together by a conical sleeve 47 and nut 48.
Patent GB-741510-A (GB)
Title: Improvements in or relating to means for taking an air sample from exhalation air
IPC: G01N33/497
Filed: 1953-07-31
Abstract: <PICT:0741510/III/1> Apparatus for sampling exhalation air comprises a three-way member 2, branch 1 being for connection to the mouth, branch 3 leading to a gas-tight collapsible bag or evacuated container 4, and the third branch 5 leading to a sample container 7 and being provided with a resistance to air flow.  The resistance may be an excess pressure valve 6, as shown, or a nozzle or capillary tube.  On exhaling into branch 1 the air first fills bag or container 4 and only then flows past the resistance in the sampling tube into the container 7, thus ensuring that only alveolar <\>air is sampled; the sample may be removed at 9 for analysis.  A tube containing a reagent which changes colour in the presence of a constituent of exhaled air may be used as the flow resistance, Fig. 2 (not shown); if the volume of air passing through the tube is known, the colour change indicates the concentration of a constituent, for example, alcohol or carbon dioxide.
Patent GB-891085-A (GB)
Title: Mower knife blade
Inventor: CHRISTEN OTTO
IPC: A01D34/14
Filed: 1959-06-22
Abstract: 891,085. Mowing machines. MASCHINENFABRIK FAHR. A.G. June 22, 1959, No. 21344/59. Class 6(3). In a mower of the type having a reciprocating knife bar co-operating with a fixed finger plate, the knife bar comprises a series of blades 1 riveted to a supporting bar. Each blade is formed on its upper side with grinding surfaces 2 along each cutting edge, and on its lower side is either milled or broached with notches 3 extending perpendicularly to the cutting edge. Further, the notches are bevelled off in such a manner as to break the cutting edge into a series of such edges extending stepwise.