baber/WOPTO huggingface dataset:
Patent GB-549742-A (GB)
Title: Improvements relating to machines for plucking hops and other plants
IPC: A01D46/02
Filed: 1941-08-20
Abstract: 549,742. Plucking hops &c. LEWIS, C. H. Aug. 20, 1941, No. 10632. [Class 6 (iii)] A machine for plucking hops, peas &c. from plants comprises a plurality of pairs of rollers a, b between which the plants can pass and which can exert sufficient tension to detach the hops &c. each roller a being freely movable to and from the corresponding roller b so as to accommodate automatically varying thicknesses of the plants: The rollers a, and if desired, the rollers b, may consist of a plurality of independent disc-like elements to ensure uniform pressure over the whole of the width of the layer of plants passing between them. The rollers of each successive pair are rotated at a slightly greater speed than the preceding pair, the driving spindles of each pair of rollers being preferably interconnected by pinions driven by chain and sprocket or other mechanism. The rollers of different pairs may be of different diameters and the rollers b may be driven at a slightly greater speed than the rollers a. In one form, each roller a, Fig. 3, has internal gear teeth e held by a spring- pressed roller h in mesh with a pinion f on a fixed driving spindle g. In a second form, each roller a is connected by a spiral spring, or radial springs, to the driving spindle, a pair of smaller spring-pressed rollers bearing on opposite sides. of the roller to prevent lateral movement. In a third form, each roller a, Fig. 5, is connected by chains or cables k and a ring m to. the spindle g. In a fourth form, each roller a is made from soft rubber with a tough outer skin. The rollers b may also be made from rubber. The detached hops &c. and leaves are conducted by conveyers o, p to a screening plant.
Patent GB-579119-A (GB)
Title: Improvements in or relating to the production of moulded articles of expanded rubber and like thermo-hardening materials
IPC: B29C44/58
Filed: 1941-08-21
Abstract: Relates to moulding articles of thermosetting materials such as rubber and thermosetting resins by heating in a closed mould a dough which has previously been impregnated with an inert gas under pressure or has had incorporated therein a substance or mixture of substances which on heating will form an inert gas, the dough, before introduction into the mould, having been vulcanized or hardened sufficiently to prevent escape of the gas during the preliminary stages of the heating, but not sufficiently to prevent expansion of the dough during the final heating, which is carried out at a temperature sufficient to complete the vulcanization or hardening, the amount of the dough being adjusted so that its volume when fully expanded is greater than that of the mould.  According to the invention, the mould is formed of mouldable material within which metal pieces or metal particles are embedded for the purpose of transferring heat to the material being moulded; the mouldable material may be plaster of Paris and the metal may be zinc powder; copper is mentioned as being unsuitable for use with rubber, and aluminium as being unsuitable in that it is prone to oxidation and other changes at high temperatures.  The mould may be made by mixing together equal parts by weight of Calestone plaster and powdered zinc, wetting the mixture to a cement-like consistency, pouring the mixture into a "Vaseline" (Registered Trade Mark) -lined box, pressing a "Vaseline"-lined master article into the mixture until half the article is covered, allowing the plaster to set, removing the article, and casting the other half of the mould in a similar manner; small dowel pins may be constructed on the surface of the mould.  The mould halves may be sheathed with metal.
Patent GB-138950-A (GB)
Title: Improvements in or relating to the purification of metallic solutions
Inventor: SAMUEL FIELD
IPC: C25C1/16
Filed: 1918-06-28
Abstract: A metalliferous solution, for instance zinc sulphate solution obtained by lixiviating ores with sulphuric acid or spent electrolyte, is purified from undesired metals by immersing in it two metals in contact, one of which is electro-negative to the metals to be removed, while the other is the same as the principal metal in the solution, or is electro-positive thereto. The two metals immersed are preferably widely separated in the electro-chemical series. Amalgamated zinc, amalgamated aluminium, or an amalgamated alloy of these or other electro-positive metals such as magnesium, are suitable.  They may be in the form of filings, granules, or sheets. Amalgamation may be effected by immersion in a solution of a mercury salt, and rinsing, or, when in the form of sheets, by metallic mercury.  Sheets may be mounted in frames, turnings may be contained in a perforated box in the purifying tank.  Plates may be re-amalgamated at intervals.  The solution is preferably acidulated with about 0.1 per cent of sulphuric acid, and heated to 70-100 DEG C., though a lower temperature suffices when sheets are used.  The solution may be gently stirred.  Copper, arsenic, antimony, bismuth, cadmium, nickel, and cobalt are precipitated as mud, from which mercury may be recovered.  Iron may be removed by usual methods before or after the treatment.  Aluminium dissolved from the amalgam may be removed with the iron.  Specifications 3533/89, 19934/95, 17956/03, 25122/05, 13355/14, and 138,947 are referred to.
Patent GB-430531-A (GB)
Title: Improvements in or relating to devices for use in beating out fires
IPC: A62C8/04
Filed: 1934-04-09
Abstract: 430,531. Fire-extinguishing. CROSS, E. M., Aston Tirrold Manor, Didcot, Berkshire. April 9, 1934, No. 10710. [Class 47 (ii)] A device for beating out fires comprises a handle B, preferably octagonal in section, and a flap A of flexible material, preferably cut from old inner tubes of motor tyres. The flap is of rectangular or other suitable shape, preferably with a longitudinal slit A<1>, and has a part of reduced width which is wrapped around the end of the handle and secured by binding, or by a detachable clip. When so secured, the flap assumes a substantially semi-cylindrical form. The flap may be formed of a porous material capable of absorbing water before use. Preferably, two such flaps are used, being secured to the handle in superposed relation.
Patent GB-1459774-A (GB)
Title: Gain control circuit
IPC: H03G1/00
Filed: 1973-12-12
Abstract: 1459774 Gain control of amplifiers SONY CORP 12 Dec 1973 10789/73 Divided out of 1459773 Heading H3T In a cascade amplifier comprising transistors Q1, Q2, Q3, gain is controlled by a voltage Vc applied to the base of Q1 to vary the forward bias of the base-collector junction of Q1 and thus its base-to-collector impedance. The sensitivity of the control may be varied by adding a resistor in series with the base circuit and increase of the impedance of Q3 and thus the noise rejection can be effected by adding R6. Other stages may be controlled via unit 6.
Patent GB-944302-A (GB)
Title: Improvements in methods of monitoring the constitution of metal alloy castings
Inventor: PAYNE CHARLES ARNOLD
IPC: G01N25/04
Filed: 1961-03-24
Abstract: The monitoring of the constitution of a metal alloy includes the steps of casting a small sample (100-600 cu. cms.) in a fully liquid state into a test mould within which is housed a thermometric element, permitting the sample to cool, measuring the change of temperature that takes place between the onset and completion of solidification, and measuring the electrical resistance of the, or an additionally cast sample.  The sample may be taken, immediately before casting or during the casting of a batch of castings, in an open ended cylinder terminating at its lower end in a hemisphere at the geometric centre of which a platinum platinum rhodium thermo couple protected by a thin shell of fused silica is disposed.  A sample cylindrical specimen having a length of several diameters is suggested for the resistivity test but other shapes of test piece including discs and rings are referred to. Knife edge contacts are set at different points along the bar which should be of accurate dimension, and the potential difference between the contacts whilst the sample is carrying a known current, is measured.  The effects of silicon and phosphorus on the distribution of carbon in grey cast iron is discussed and the use of graphs, Figs. 1 and 2 (not shown) to interpret the results is described.  Test results are exemplified.
Patent GB-557121-A (GB)
Title: Improvements in or relating to radiography
IPC: G21K1/02
Filed: 1942-08-05
Abstract: 557,121. R÷ntgen-ray apparatus. WATSON, W., and ILFORD, Ltd. Aug. 5, 1942, No. 10919. [Class 98 (i)] The Potter-Bucky or like grid used in radiography is connected with one or more spring members so that it may be oscillated in the plane of the grid bars and in a direction inclined to them by flexing and releasing the members, the oscillations thus produced dying away and so avoiding the formation of shadow patterns of the grid at the ends of its movement which occurs when the oscillations are of constant amplitude. In the form shown a rectangular grid 14 is carried by a frame 13 supported by leaf springs 11 from a base 10 which carries the film cassette. The springs are flexed and released mechanically or manually, for example by a cord secured to one of them, and oscillate the frame 13 in a diagonal direction. The grid may be inserted in the frame in two angularly related, as shown mutually perpendicular, positions. In another form, the grid is carried by a turntable mounted in the frame, and in order that the direction of oscillation may be maintained transverse to that of the grid bars, however the grid is oriented, the leaf springs 11 are connected to the frame by ball joints and are secured at their lower ends to spindles mounted on the base 10. The spindles are simultaneously rotatably adjusted by sprockets engaged by a common sprocket chain, thus maintaining the flat surfaces of the springs in parallel planes. Fig. 4 shows electrical means for giving intermittent impulses to the springs during a long exposure, comprising a solenoid 34 the energizing circuit of which is controlled by contacts of which one is mounted on the spring 11 which it operates, and by a valve 39 which becomes intermittently conductive at periods determined by the build-up of potential in a condenser resistance circuit 43, 40. The grid may comprise two superposed and mutually inclined sets of grid bars. Two superposed grids having their sets of grid bars mutually inclined may be independently oscillated in opposite directions ; they may be arranged in a vertical plane and oscillated in a substantially horizontal direction in this plane.
Patent GB-383869-A (GB)
Title: Improvements in or relating to charge treating devices for internal combustion engines
IPC: F02M31/18
Filed: 1932-04-18
Abstract: 383,869. Vaporizers. DEVAUD, C., 3, SerriÞres, NeuchÔtel, Switzerland. April 18, 1932, No. 11029. Convention date, April 18, 1931. [Class 7 (iii).] Fuel, vaporized while passing through a serpentine conduit 5 in a container 1 which is heated by the passage therethrough of the exhaust gases from an internal-combustion engine, has a small proportion of those gases added to .it at a point between the heating chamber and the engine cylinders, the passage of the fuel vapours being thereby accelerated. The exhaust gases pass from the exhaust pipe 3, preferably past a regulator, through a pipe 2 to the container 1 and a part thereof is led past a regulator 9 through a pipe 7 to the fuel pipe 6. Perforated screens 10 prevent flame from reaching the container 1 which is provided with a safety valve 11 to prevent excessive pressure. Water of condensation may be drawn off through a cock 8.
Patent GB-143378-A (GB)
Title: Improvements in controlling and regulating systems for dynamos, applicable also as motor-starting systems
IPC: H02J7/24
Filed: 1919-05-05
Abstract: 143,378. Rickets, W. J. May 5, 1919. Thermionic relays. - The dynamo-electric machine f is regulated by means of a thermionic valve v the filament c of which is connected in series with a resistance or the shunt field winding s across the armature brushes p, n. The anode a of the valve is connected to one end of the counter-winding d, and, as the machine speeds up and the temperature of the filament c rises, the increasing current through the valve and winding d tends to diminish the excitation. The valves may be disposed in suitable places to serve as indicators.
Patent GB-1397471-A (GB)
Title: Fabrics
IPC: D06M15/564
Filed: 1973-03-07
Abstract: 1397471 Raised pile fabrics; fiinishing fabrics TORAY INDUSTRIES INC 7 March 1973 [7 March 1972 25 April 1972] 11153/73 Headings D1K, D1P and D1S A raised pile fabric is formed by weaving with wefts consisting of an islands-in-the-sea yarn of extra fine monofilamentary fibres having a dimension of 0.0001 to .4, and a warp of crimped yarns or yarns having a latent crimp, and then removing the sea component, developing the crimp, impregnating the fabric with small amounts of an elastic polymer to stabilise it and subjecting it to a raising process, the raised fibres being mainly the extra fine fibres of the weft. The polymer is distributed in a plurality of little pieces of film or lumps throughout the fabric. The weft may be a spun yarn of bundles of monofilaments and the warp may be a false twisted crimped multifilament yarn containing monofilaments of from 1 to 10 denier. The fabric may be further stabilised by heating to the melting point thereof. In making the fabric, the process steps, starting with sewing, may be varied in order. One example of sequence is:- weaving - removing sea component - development of crimp - raising - anti-pulling processing - rubbing - dyeing and finishing - brushing. There may be drying steps at various places. In a specific example, the warp is 150 denier/48 filament false twisted yarn of polyethylene terephthalate, and the weft a stable yarn "islands-in-ith-sea" type whose island fibres are mainly polyethylene terephthalate and whose sea component is mainly polystyrene. The warp and weft were woven into a 5-end sateen fabric with 100 warps to the inch and 60 wefts to the inch. The denier ratio of weft to warp is 1.75 and the number of weft floats between binding points is 4. The fabric was contracted by immersing in boiling water and then washed 5 times in trichloroethylene to remove the weft sea component. Thereafter the fabric was dyed Midnight Blue in a circular pressurised dyeing machine and then coated with a lubricating or oiling agent, and dried. The dried fabric was then raised and sheared to obtain an excellent nap through which weaving pattern was not conspicuous. This fabric was immersed in 5% dimethylformamide solution of a polyurethane obtained by reacting methylene-bisaniline, diphenylmethane diisocyanate and 75 parts of polyetherglycol and 25 parts of polymer glycol. The impregnated fabric was squeezed, wet coagulated and dried, and the amount of adhered polyurethane was 16.7 grams per square metre. The dried fabric was finished by buffing with sandpaper of mesh 150.
Patent GB-495294-A (GB)
Title: Improved arrangement for ventilating the interior of carriage bodies, particularly for motor vehicles
IPC: B60H1/24
Filed: 1938-04-12
Abstract: 495,294. Ventilating vehicles. ZAVODY RINGHOFFER-TATRA AKCIOVA SPOLECNOST. April 12, 1938, No. 11168. Convention date, June 3, 1937. [Class 137] The interior of a motor vehicle having its engine at the back is ventilated by admitting air through louvres 2 into a passage between outer and inner covers 1 and 3 leading to openings 4 through which the air passes into a chamber 6, and out through a slot 8 into the interior of the vehicle. A flap 7 controls the amount of air admitted. Stiffening bars may be provided between the outer and inner covers.
Patent GB-315741-A (GB)
Title: Improvements in steam boilers and method of operating the same
IPC: F23H11/10
Filed: 1928-04-17
Abstract: 315,741. Babcock & Wilcox, Ltd., (Babcock & Wilcox Co.). April 17, 1928. Air, supplying.-In a boiler furnace provided with a travelling grate, the air for combustion is passed through the tubes 24 of a primary air heater, heated by waste gases, and then divided into two parts, one part being led through the conduit 30 to ports 13 delivering below the fuel on the middle and rear portions of the grate while the other part is led through a secondary air heater 27 arranged between the passes of the boiler, where it is further heated, and thence through conduits 31, 32 to ports 12 delivering below the fuel on front portion of the grate.
Patent GB-178857-A (GB)
Title: Instrument transformer with variable current ranges
IPC: H01F38/32
Filed: 1922-04-21
Abstract: 178,857. Landis & Gyr, Akt.-Ges. April 21, 1921, [Convention date]. Regulating transformers. -The primary winding a of a transformer for use with measuring instruments has tappings b connected to contact studs e - - i, over which a contact-arm can be moved to varv the connections without" interrupting the current. In the arrangement shown, an additional contact stud k directly connected to the instrument d is provided. When the contact-arm is moved on to the stud k, a projection s engages a spring l and opens the circuit of the secondary winding c at contacts m, leaving the instrument connected in the line. In a modification, a sliding contact-arm is used, and the secondary winding is short-circuited when the instrument is directly connected in the line.
Patent GB-544844-A (GB)
Title: Improvements in or relating to structural stanchions
IPC: E04C3/32
Filed: 1940-07-08
Abstract: 544,844. Structural metal stanchions. HILLS PATENT GLAZING CO., Ltd., and PODMORE, L. S. July 8, 1940, No. 11361. [Class 20 (ii)] A lattice stanchion for a building comprises two main openwork members 17, 18 pivoted together at their upper ends at 20, and adapted to be connected by links 22 permanently hinged to the upright 17 and detachably secured to the inclined member 18, so that when the links are detached from the inclined member, this member and the links are collapsable on to the member 17. A socket head 19 fits over the upper end of the member 17 and carries a supporting plate 24 for the roof truss. A channel member 23 connects the bases of the main members. The stanchions are inter-connected by longitudinal angles 25 to which the plating is secured.
Patent GB-1234725-A (GB)
Title: Apparatus for introducing materials into of removing materials from a hermeticallly sealed vessel
IPC: F16K1/22
Filed: 1969-03-04
Abstract: 1,234,725. Pressure cooker. P. & S. RICEMILLS, Inc. 4 March, 1969 [7 March, 1968], No. 11391/69. Heading B1X. [Also in Divisions B8 and F4] Particulate material is batch heated in tanks 200 supplied with compressed air at 204 and hot water at 206, the material then being fed from each tank in turn or to conveying means 212 which delivers a continuous stream of material to cooker 218 supplied with pressurized steam at 219, the cooked material being discharged to dryers 233. The feed and discharge units 216, 220 for the cooker each comprise a container 12 communicating through valve means 50, 20 with the cooker and with an environment of dissimilar pressure, the valve means being pneumatically operated to equalise the pressure in the container with that within the cooker or with that of the environment before transferring the material.
Patent GB-554291-A (GB)
Title: Improvements in or relating to photographic objectives
IPC: G02B9/12
Filed: 1942-08-14
Abstract: 554,291. Photographic objectives. KODAK, Ltd. Aug. 14, 1942, No. 11418. Convention date. Oct. 29, 1941. '[Class 97 (i)] In an objective comprising a bi-concave simple element II airspaced from a simple positive front component I and a rear doublet consisting of a negative element III cemented to a positive element IV of higher refractive index, the front air space S, is greater than twice the rear air space S<SP>2</SP>, the radius R<SP>3</SP> lies between 0.8 R4 and 1.5 R4, and the radius R<SP>1</SP> lies between R<SP>3</SP> and 2R3. Element I may have refractive index between 1.68 and 1.76 and dispersive index between 43 and 58; it may be biconvex, and R<SP>2</SP> may be between 5R<SP>1</SP> and 20R<SP>1</SP> and R<SP>1</SP> between 0.5 F and F, F being the focal length of the lens. Data for two examples are set out.
Patent GB-165075-A (GB)
IPC: F41A3/74
Filed: 1921-04-20
Abstract: 165,075. Schneider et Cie. June 18, 1920, [Convention date]. Ordnance breech mechanism.-Relates to the de Bange type of obturator having a pad A of plastic material contained in a bag of wire gauze and held between split metal rings C, D of rightangled triangular section. According to the invention, the clefts 2 in the rings follow a plane parallel to the hypotenuse c of the triangle so that the resulting points p<3> are located at the edges of the rings which are remote from the pad thereby preventing perforation of the bag by the points.
Patent GB-461341-A (GB)
Title: Improvements in agricultural cultivator apparatus
IPC: B62D51/04
Filed: 1936-05-11
Abstract: 461,341. Motor machines for working land. ROTARY CULTIVATORS, Ltd., and MUIRSON, K. J. May 11, 1936, No. 11490 /35. [Class 6 (i)] [Also in Group XXXI] In cultivating apparatus steered by a man walking behind it and comprising a frame supported on two driven wheels and carrying an engine and a rotary cultivator, a transverse countershaft is driven direct from the engine and can be placed in driving connection with the wheels and with the transversely disposed rotary cultivator, the displaceable pinions of a variable speed drive between the countershaft and the driving wheels being slidably mounted on the countershaft, and the whole of the variable speed gearing lying on one side of the wheel axle whilst the engine alone lies on the opposite side to counterbalance the weight. The countershaft 13 is driven from the engine 5 through bevel gearing 11, 12, a shaft 10, and a clutch controlled from the handles 9. The wheels 1 are driven from the shaft 13 through a change-speed gear - box 15 and spur gearing 20, 21, a handcrank 16 being provided for turning the shaft 13 to start the engine. The cultivator shaft 25 is driven from the shaft 13 through gearing 22, 23, 24 and an overload clutch 31. The cultivator blades are detachably connected to hub flanges 26 on the shaft 25. The rear end of the frame 4 is supported by an adjustable trailer wheel.
Patent GB-848012-A (GB)
Title: Improvements in or relating to boots, shoes or the like
IPC: A43B23/08
Filed: 1957-05-09
Abstract: 848,012. Shoe linings. SHARPE, A. J. Aug. 11, 1958 [May 9, 1957],No. 11491/57. Class 17(2) A shoe having its forepart unlined or provided with a stuck-on lining 15 has a stiffener supporting lining 16 extending around the heelward end of the shoe and attached to the forepart of the upper by butt joints 17. Lining 16 may be in one piece, or in two pieces joined along the back seam. The quarters 14 overlap the ends of the forepart and terminate in finished edges 19. Preferably the lining 16 and the foreparts of the shoe are of comparable thickness at the joints 17. In a preferred procedure a strip of tape with adhesive on both faces but with the outer face covered by a protective strip, is secured to the outer face of the lining 16 which is then attached by butt joints and zig-zag stitching to the skived edge of the vamp. The connected quarters are then fitted around the lining 16 to overlap the vamp and are joined to the vamp by stitching. The protective strip is then removed and the lining 16 attached to the quarters by the adhesive strip. A heel stiffener is inserted between the quarters 14 and lining 16.