baber/WOPTO huggingface dataset:
Patent GB-1479897-A (GB)
Title: Yarn tensioning
IPC: G01L5/10
Filed: 1975-05-22
Abstract: 1479897 Measuring yarn tension electrically D W AUCKLAND and N P LUTTE 22 May 1975 [27 June 1974 20 Dec 1974] 28532/74 and 55302/74 Heading G1N The tension in a yarn 17, Fig. 3 is determined by measuring the force required to deflect the yarn by rollers 18 mounted on a rotatable member 11  located on a shaft 15 between the poles of an electromagnet 12, Fig. 1. When the magnet is energized by the collector currents of transistors 19, 20, the member 11 rotates to line itself up with the flux lines, until a contact 21 carried by member 11 touches a fixed contact 23 and earths the base of transistor 19, thereby de-energizing the magnet, whereupon contacts 21, 23 separate and the cycle is repeated. The average current through the electromagnet 12 is measured at 26 and is proportional to the yarn tension. Alternatively, the electromagnetic energizing current is increased until contacts 21, 23 touch and this value is noted.
Patent GB-733091-A (GB)
Title: Steroid 4-acyloxy triketones
IPC: C07J5/00
Filed: 1952-11-12
Abstract: The invention comprises pregnane-4 : 17a -diol-3 : 11 : 20-trione 4-acylates of the formula <FORM:0733091/IV (b)/1> wherein Ac is the residue of an organic carboxylic acid containing from 1-8 carbon atoms; and their preparation by esterification of the corresponding 4-hydroxy compound with formic acid or the acid chloride or anhydride of an organic carboxylic acid containing more than one carbon atom. Preferably the reaction is effected at 0-100 DEG  C. using excess of the acylating agent in the presence of pyridine.  Examples describe the use of acetic, propionic, butyric, benzoic, and octanoic anhydrides and acetyl chloride to produce the corresponding 4-acylates.  Further esters are listed.  Specifications 731,701, 733,089 and 733,090 are referred to.
Patent GB-998557-A (GB)
Title: A machine tool provided with a tool changer
IPC: B23Q3/157
Filed: 1961-08-08
Abstract: 998,557. Machine tool details. J. A. STARK. Aug. 8, 1961 [Jan. 31, 1961], No. 28579/61. Heading B3B. A machine tool comprises means 34 for transferring tools from a matrix 36 to a chuck 32 whilst maintaining the ends of the tools in a plane containing the tool receiving end of the chuck. The method of transfer and the chuck are as described in Specification 975,360. The work or the tools may be fed. The transfer arm is oscillated by a motor 54 driving through an electric clutch and the matrix drum 36 is indexed by a motor 56. The spindle 62 is rotated by a separate motor. Each tool is mounted in a holder 91, Fig. 4b, which is gripped against a back-plate 74, Fig. 4, by a spring-fingered tapered collet 86 moved axially by a tube 104 actuated by springs 128 and released by a fluid pressure piston 152, or vice versa. The position of the chuck is signalled by a switch 178. The chuck is cleared by an air blast via a pipe 111a and is sealed by a plug 108. The transfer arm 220, Fig. 5, has two toolholding recesses. Each is closed by a pivoted jaw 222 moved to clamp a tool by aspring 244 and an arm 240. Each arm is released by a solenoid 230 acting through a ball-bearing and helical groove to convert the reciprocating solenoid movement to rotation of the arm. Each jaw 222 is opened by a spring 229. The position of a tool in a recess is determined by a set screw 264, a boss 228 and a spring plunger 254, the presence of the tool being indicated by a switch 268. The drum 36, Fig. 1, retains the tools in holders comprising a fixed jaw 332 and a pivoting jaw 326 which is spring-biased to open position. A tool is freed from its holder by operation of an axially-movable plunger which moves a coaxial spring-pressed plunger in a housing 384 to release the jaw 326. Each tool is identified by a key 350 as in Specification 922,167. The drum is rotated by a wormtype gear engaging a series of radially-extending rollers on a disc coaxial with the drum. In a modified drum, each tool 91, Fig. 22, is secured by a solenoid-released spring latch 430 and is identified by a series of insulated and conducting rings 434. In a further modification, the tools are held in members 484, Fig. 24, which are adjusted radially by fluid pressure means acting against springs to position the tool for pick-up by the arm 200. In this case the arm 200 does not oscillate but moves through complete circles. Reference has been directed by the Comptroller to Specifications 916,501 and 922,167.
Patent GB-798509-A (GB)
Title: Improvements in or relating to comminuting apparatus
IPC: E03C1/266
Filed: 1955-10-07
Abstract: 798,509. Comminuting apparatus. SHEPHERD, T. C. R. Oct. 8, 1956 [Oct. 7, 1955], No. 28591/55. Class 59 In comminuting apparatus for attachment to a kitchen sink or the like, comprising a shaft-driven comminuting rotor and a seal around the shaft to reduce or prevent ingress of material under treatment to the shaft-driving means, means is provided to supply water to the seal to carry said material away from the seal As shown, material supplied to a casing 5 attached to the outlet of a kitchen sink 1 is comminuted between hollow breakers 22 mounted on a motor-driven shaft 8 and teeth 23 on a fixed ring 6, the shaft 8 being surrounded by a seal 14 over which water under pressure flows from a supply pipe 17 controlled by a valve 18 which is opened when the motor 9 driving the shaft 8 is started. The seal is housed in a bottom member 10 and is surrounded by an annular space 16 to which water is supplied through a radial channel 15, the' water passing up through an annular passage 24 in the rotor 7 to the interior of the breakers 22. Some of the water, however, is discharged under centrifugal force through a narrow gap 25 between the rotor 7 and member 10 to flush the entire surface of the chamber 11 before being carried to a discharge outlet 13. The outer radial walls 27 of the breakers are provided with nozzles 28 through which jets of water are discharged under centrifugal force so as to clear the teeth 23 and prevent clogging of material on the top of the ring 6. The inner radial wails 29 of the breakers are provided with nozzles 30 through which jets of water are directed upwardly to flush the casing 5 and assist in keeping the solid material above the rotor 7 in partial suspension to prevent clogging of the teeth 23. Instead of being. attached to a kitchen sink, the apparatus may be attached to the bottom of a bowl 31 which is flushed by a water pipe 33. In an alternative arrangement, one or more jets of water are directed down on to the rotor and will ricochet upwardly therefrom and at the same time will be thrown outwardly by centrifugal force to wash the wall of casing 5. The Provisional Specification describes a similar construction of comminuting apparatus having a lid which when closed starts the motor and the flow of water to the apparatus. Specifications 798,510 and 798,511 are referred to.
Patent GB-647502-A (GB)
Title: Improvements in grass drying machines
IPC: F26B17/02
Filed: 1947-10-27
Abstract: 647,502. Drying grass. BUTTERLEY CO., Ltd., NEWMAN, H. R., and FOSTER, F. H. Oct. 27, 1947, No. 28603. [Class 34(ii)] A grass drier comprises an elevator, a wilting chamber, a crushing chamber, a drying chamber and a cooling chamber through each of which the grass passes in turn. Grass is delivered by an elevator a to the wilting chamber where it falls on to a shelf f comprising a number of tines fixed to the walls of the chamber; a series of revolving intermeshing tines c then comb the grass along the chamber and back again to an opening d and hot air which enters through louvres circulates through the grass. The grass then falls through opening d on to endless belts g, g<SP>1</SP> and passes between crushing rollers j, j<SP>1</SP>, hot air entering the chamber through ducts f<SP>1</SP> and the moisture from the crushing process is collected in sump n. From the crushing chamber the grass enters the drying chamber through the opening o and falls on to the shelf b<SP>1</SP> from which it is combed along the chamber and back again by tines c<SP>1</SP>, jets of hot air passing through the louvres p on to the grass. From the drying chamber the grass is transferred to the cooling chamber w through which it is combed by tines and subjected to cool air before reaching the delivery shoot q. The crushing rolls may be replaced by radially placed rolls bearing on a circular platform.
Patent GB-519882-A (GB)
Title: Improvements in de-icing means for aircraft
IPC: B64D15/16
Filed: 1938-10-01
Abstract: 519,882. De-icing aircraft. BERGLAS, A. Oct. 1, 1938, No. 28611. [Class 4] In order to prevent the accumulation of snow or ice, the surface of a wing or other aircraft part is formed of or provided with one or more flexible band-like members adapted to encircle the member and to be moved slowly and continuously in one direction. The bands may be formed of rubber or like elastic material or of flexible metal in ribbon form with a highly polished surface. The bands may also be formed of closely spaced wires and may be in parallel, diverging or overlapping relation. Alternatively the whole surface may be formed on a movable envelope. In the form shown, bands 2 of rubber backed with canvas are passed round rough surfaced pulleys 5 carried by a shaft 4 mounted adjacent the trailing edge and driven through reduction gearing by a motor 7 controlled from the cockpit. The shaft 4 may be adjustably mounted. The bands 2 adjacent the aileron are driven from the shaft 4 through bevel gearing and a shaft 15 which also drives bands 16 passed round the aileron. In an alternative construction the shaft 2 is mounted adjacent the leading edge and the bands adjacent the aileron drive the shaft 15. The brands may pass over a shaft mounted flush with the surface of the wing in a recess in the leading or trailing edge or through slots in the wing over a shaft concealed in a longitudinal bore. Depressions may be provided in the wing surface to accommodate the bands ; the bands may be driven by the aircraft engine.
Patent GB-716762-A (GB)
Title: Improvements in and relating to safety pins
Inventor: BAKER ERNEST CHARLES
IPC: A44B9/14
Filed: 1952-11-14
Abstract: 716,762. Safety-pins. KIRBY BEARD & CO., Ltd. Nov. 16, 1953 [Nov. 14, 1952], No. 28713/52. Class 43 In order to prevent the threads or fibres of a garment or other article from engaging between the turns of the coil hinge of a safety-pin the hinge portion a<1> is coated with a resilient plastic a<3>, preferably a thermo-plastic such as a polyvinyl chloride polymer, or with rubber, which fills and encases the turns of the coil. The central web portion a<2> of the coating material may be removed.
Patent GB-1429648-A (GB)
Title: Coated photographic paper base
IPC: D21H19/58
Filed: 1972-06-20
Abstract: 1429648 Photographic paper CASSIO PHOTOGRAPHIC PAPER CO Ltd 12 June 1973 [20 June 1972] 28792/72 Heading G2C  [Also in Division C3] Photographic paper comprises a light-sensitive gelatine containing silver halide emulsion layer supercoated on an intermediate coating of a composition comprising a white pigment; a waterinsoluble polymeric binder comprising units derived from an alkyl acrylate and optionally styrene or a styrene homologue; and a compound capable of reacting with gelatine and promoting adhesion of the coating with the supercoated silver halide emulsion layer. The white pigment may be, for example, barium sulphate, china clay, titanium dioxide or a mixture thereof. The  optional styrene homologue component of the  binder may be vinyl toluene. The binder may also include up to 5 wt per cent of units of an α substituted acrylic ester, e.g. a methacrylate ester, acrylic acid, methacrylic acid or vinyl acetate. A small amount of gelatine may optionally be used with the polymeric binder. The gelatine -reactive adhesion promotor may be, for example, chrome alum, a water-soluble condensation product of epichlorhydrin and a polyamide or an alkylene glycol alginate ester. The intermediate coating is suitably applied to paper from an aqueous emulsion or latex and, if desired, the aqueous coating composition may contain a water-soluble, natural or synthetic, polymeric thickening agent. Other optional additives include surfactants, pigment dispersing agents, phenolic preservatives, optical brighteners, and tinting pigments or dyes The paper may be provided with a conventional baryta coating in addition to the intermediate coating.
Patent GB-1042868-A (GB)
Title: A weft measuring device for a loom
IPC: D03D47/00
Filed: 1964-07-13
Abstract: 1,042,868. Shuttleless looms. ADOLPH SAURER Ltd. July 13, 1964 [Sept. 12,1963], No. 28818/64. Heading D1E. A measuring drum for measuring two lengths of weft in a hairpin comprises refractable carrier pins 26, 27 for catching the weft and retaining it on the periphery of the drum when measured and a combined clamp and cutter 10, 11 for cutting off one weft length and retaining the other, the circumferential distance between the carrier pins and the clamp and cutter device being variable. The positions of the pins 26, 27 can be varied by their location in a series of bores 7, 7a, 8 and 8a around the drum. The pins are operated either mechanically by a reciprocating cam 18 as in Fig. 2 or by solenoids as in Fig. 6 (not shown).
Patent GB-941341-A (GB)
Title: Improvements in and relating to laundry apparatus
IPC: D06F58/22
Filed: 1961-08-10
Abstract: 941,341. Tumbler driers. PHILCO CORPORATION. Aug. 10, 1961 [Aug. 10, 1960], No. 28898/61. Heading F4G. [Also in Division D1] In a washing and drying machine a stationary tub structure 11 containing a pivotally supported drum 10 is arranged for passing a current of air through the drum to dry articles therein, and includes a back plate 17 having an air exit port 25 communicating with an air suction port 27 in a second back plate 18 and a movable suds door 29 to prevent suds entering the exit port during a washing operation. A blower 22 is mounted on the back plate 18 to establish the air current and a lateral-flow duct 26 co-operating with a lint trap 30 is placed between the two back plates. Air is drawn through an inlet 15 to a curved duct 16 leading to an entry port 23 in a front wall 24 of the tub structure. A gas, or electric, air heater (Fig. 3, not shown) is provided in the zone of the inlet 15 and a further suds door 28a is included in the duct 16. Electromagnetic means under the control of a timing device are provided for actuating the suds doors 28, 29 and a single electric motor (Fig. 5, not shown) is employed to rotate the drum 10 and the blower 22 simultaneously.
Patent GB-1161188-A (GB)
Title: Crude Oil with improved Flow Properties
Inventor: CHOUFOER JOHANNES HERMANUS
IPC: C10L1/16
Filed: 1968-06-18
Abstract: 1,161,188. Crude oil composition. SHELL INTERNATIONALE. RESEARCH MAATSCHAPPIJ N.V. 18 June, 1968 [7 July, 1967], No. 28940/68. Heading C5E. A crude oil composition comprises a waxy crude oil -and a polymer containing aliphatic hydrocarbon side chains with at least 14 carbon atoms, which polymer may be taken to have been obtained by polymerization of olefinically unsaturated compounds. The-polymer may be a homo- or co-polymer of an alkyl acrylate or alkyl acrylates. Many such examples are given. It may also be a copolymer of ethylene and di-n-oetadeeyl maleate, or a homo- or co-polymer of vinyl ester or esters of saturated monocarboxylic acid or acids. Such compositions no longer have a tendency to form a wax structure upon cooling and are thus much easier to transport by pipeline or tanker.
Patent GB-408981-A (GB)
Title: Improvements in or relating to devices for damping the oscillations of vehicle and other suspension systems
IPC: B60G17/08
Filed: 1932-10-17
Abstract: 408,981. Vehicle suspensions; shockabsorbers. PIEPER, H., 90, Avenue des Nations, Brussels. Oct. 17, 1932, No. 29004. Convention date, Oct. 17, 1931. [Classes 108 (ii) and 108 (iii).] In a device for damping the oscillations of a vehicle or other suspension the damping is effected by means of a piston 4 and a cylinder 5 which, on relative movement, for example, of the chasses and axle of a vehicle, pump liquid through a non-return valve 9<1> into a receiver cylinder 8<1> having a restricted outlet 10, the receiver piston 8 being so connected with an auxiliary damper that, when the piston is acted on by the fluid, it operates the auxiliary damper. The device may be used alone or two or four such devices may be used to control each axle, or the ends of each axle. As shown in Fig. 1 the auxiliary damper 12 is an hydraulic shock-absorber having a conical valve which is adjustable through rod and lever mechanism by the piston 8. Return movement of the piston 8 to its normal position by the spring 14 ejects fluid through the outlet 10 to a reservoir 6 which communicates through a non-return valve 7<1> with the cylinder 5. A valve 11 regulating the flow of fluid at the reservoir end of the outlet 10 is adjustable manually, or automatically through gearing 20 ..... 24, to adapt the device to varying vehicle loads. In a modification, Fig. 2, the reservoir 6 surrounds the pump 4, 5 and the piston 8 is secured to auxiliary spring leaves 32 which pass through slots 18 in the cylinder 8<1> and are secured to the suspension spring 3. In a second modification the rod of the piston 8 is connected by a lever to the adjusting nut of a friction shock-absorber. An air-chamber 15, Fig. 1, may communicate with the cylinder 8<1> to prevent the liquid pumped into the cylinder from acting too suddenly on the piston 8.
Patent GB-842125-A (GB)
Title: Improvements in or relating to chucks
IPC: B23B31/20
Filed: 1957-09-16
Abstract: 842,125. Chucks. THEOBALD, D. R. Sept. 9, 1958 [Sept. 16, 1957], No. 29017/57. Class 83 (3). A workpiece 11 is located axially in a collet 1 by an adjustable stop which can be adjusted in the collet bore and locked in the adjusted position. The stop comprises a screw 28, Fig. 1, coaxially mounted in a collet 1 and adjustably screwed into a nut 26, which is held axially by a plug 24 screwed into said nut and co-operating with the tapered bore 25 of a split-ring 15, Fig. 4. The expanded and side diameter of the split-ring 15 is secured in the sleeve 16 of the collet 1. Apertures 32 in the sleeve allow tightening of the nut 31 to lock the screw 28,-or alternatively the screw may be locked by a grubscrew through the nut 26. In a modification, the screw 28 is screwed through the nut 26, passes through the split-ring 15 and plug 24, in which it is a sliding fit, and the end 23 of the plug 24 is screwed into the screwed bore 29 of the nut 26, thus expanding the split-ring 15 in the bore of the collet 1. In a further modification, the end 23 of the plug 24 and the screwthread 29 in the nut 26 are omitted, and the plug 24 is engaged with split-ring 15 by rotating a nut on the outer end of the screw 28.
Patent GB-749719-A (GB)
Title: Coating compositions
Inventor: BALFE BERNARD JAMES
IPC: C09D133/12
Filed: 1953-10-21
Abstract: A pigmented dispersion comprises a continuous aqueous phase, at least one dispersed pigment, and a dispersed copolymer of butadiene and methyl methacrylate, containing from 55 to 75 per cent of methyl methacrylate.  Specified pigments are anatase and rutile titanium dioxide, lithopone, ochre, iron oxide, sienna and phthalocyanine pigments which may be extended by china clay, barytes, blanc fixe and Paris white.  A copolymer of butadiene and at least 80 per cent methyl methacrylate may also be present. It is preferred that the average diameter of the copolymer particles is from 0.1 to 0.2 microns, and that the copolymer is prepared by emulsion polymerization using an emulsifying agent added in stages to a slightly alkaline dispersion with peroxide or persulphate catalysts and mercaptan or polysulphide promoters. The dispersion may also contain protective colloids, e.g. casein, gum arabic, starch, the sodium salt of a b -naphthalene sulphonic acid/formaldehyde condensate or the condensate of dioctyl cresol and ethylene oxide, fungicides such as sodium fluoride or pentachlorophenate, lauryl pentachlorphenol and sodium orthophenyl phenate, anti-foaming agents, e.g. glyceryl monoricinoleate and silicone compounds and sequestering agents such as sodium pyrophosphate or hexametaphosphate. Specifications 726,463, 726,466, 731,091, 745,383 and 745,929, [Group V], are referred to.
Patent GB-1385948-A (GB)
Title: Spinning unit for open-end spinning machines
IPC: D01H4/08
Filed: 1972-06-21
Abstract: 1385948 Driving arrangement and cover in open-end spinners SKF KUGELLAGERFABRIKEN GmbH 21 June 1972 [21 June 1971] 29117/72 Headings DID and DIN In an open-end spinning machine each spinning unit is pivoted to the machine frame at 14 and when raised by the toggle lever arrangement 8, 11 as in Fig. 2 the spinning rotor wharve 4 is disengaged from its driving belt 6 and may engage a brake pad 16. Similarly if the lid 1 is opened without first operating the toggle levers the opening motion of the lid pushes the toggle levers to the drive disengaging position, Fig. 3. With the toggle lever arrangement in the position of Fig. 2 the lid 1 may be opened to give access to the working parts. The drive to the opener wharve 5 and a clutch 17, 18 for the feed rolls are also disengaged by the above described operations.
Patent GB-1057407-A (GB)
Title: A method of checking the aligning mechanism of a machine adapted to read a succession of code symbols on record media
IPC: G06V30/224
Filed: 1965-07-09
Abstract: 1,057,407. Automatic character reading machines. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 9, 1965 [July 10, 1964], No. 29128/65. Heading G4R. The operation of the document alignment mechanism in a character reader is checked by passing through the machine a test document, Fig. 3 (not shown), having marks diverging from the central line of the characters to the upper and lower extremities of the area normally sensed on a properly aligned card, the characters and marks sensed causing corresponding symbols to be printed so that, by studying the pattern of omissions, the nature of any misalignment may be determined. The pattern of test marks is repeated several times along the length of the test document. The sensing station comprises a group of 30 magnetic reading heads, Fig. 2 (not shown), covering a broad scan area. The heads are connected in three groups of ten, ten heads representing the normal height of the character. The signals from the heads are sampled by seven pulses and the pattern entered in a matrix store Where it can be shifted to obtain the correct relationship for recognition. The output signals may be printed or be used to control a document sorter. The alignment mechanism comprises the usual skewed rollers and side guide. If it is not working properly one or more of the marks is not sensed and a corresponding blank appears in the printed record. The mechanism is adjusted according to the type of error indicated. Alternatively, the documents may be sorted on each field in turn, the documents being passed to the reject pocket if they are not properly read. The alignment error is indicated by the grouping of documents in the sorting pockets. They may be counted automatically. The font shown in Fig. 3 is the E13B. A similar test document for the CMC7 font may be used, Fig. 9 (not shown).