baber/WOPTO huggingface dataset:
Patent GB-477856-A (GB)
Title: Improvements in electro-magnetic devices
IPC: H01H50/30
Filed: 1936-07-25
Abstract: 477,856. Electromagnetic switches. OSBORN, H. J., and OSBORN & SHARP, Ltd., H. J. July 25, 1936, No. 20661. [Class 38 (v)] In electromagnetic change-over switches, valves &c. of the type described in Specifications 291,494 and 318,950, [both in Class 38 (v)], in order to prevent rebound of the armature after operation, one or both of the brush members is or are in the form of a spring. blade having a contact so shaped that when it makes contact with its co-operating contact it prevents rebound or kicking back of the armature while readily permitting the return movement when the electromagnet is suitably energized. As shown in Figs. 1 and 4, one of the relatively fixed contacts e of the control switch or commutator has a contact tip of V-formation which during its engagement by its co-operating movable contact o during the "off" movement of the controlled main switch first yields as the contacts initially come into engagement and then moves inwardly to bear on the upper face of said movable contact so preventing any back kick or rebound. During the return movement of the switch to the " on " position the main contact members g, Fig. 5, are forced between sets of springy contact fingers j and the switch is held firmly in this position by the pressure between fixed and movable contacts. In an alternative arrangement both of the relatively fixed contacts e, e<1> of the control switch may be similarly formed to co-operate with the respective movable contact members in the manner already described and prevent rebound of the switch at both ends of its movement while in each case readily permitting the return movement of the armature.
Patent GB-200713-A (GB)
Title: Improvements in or relating to work guides for sewing machines
IPC: D05B35/06
Filed: 1922-07-28
Abstract: 200,713. Friesner, L. July 28, 1922. No Patent granted (Sealing fee not paid). Sewing-machines; braids and the like, attaching.-A device for guiding and tensioning tape used in binding seams &c. comprises a pair of relatively adjustable arms, the end of each arm being bent back on itself. The arms are formed from a strip of spring steel f doubled on itself, each arm being bent back at f<3> and f<4> to receive the tape which is passed through the loops so formed and between the arms as shown in Fig. 6. The arms are secured in a groove e in a plate d by a screw c entering a slot in the arms to allow longitudinal adjustment. The relative tensioning adjustment of the arms is effected by a clamping bolt g. A guide or gauge such as h having a turned-over end h<2> to engage the tape may be associated with the tensioning means and is adjustably held on the plate d by a bolt i so that it may be brought into action alternatively with the tensioning means.
Patent GB-659802-A (GB)
Title: Improvements relating to the burning of mobile fuels in fast moving gas streams
Inventor: ROBSON ARTHUR RYNYON DEVEREUX
IPC: F02C7/264
Filed: 1946-07-11
Abstract: 659,802. Igniting burners. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. July 11, 1946, No. 20748. [Class 75(iii)] A liquid fuel pressure operated apparatus for initiating the action of a device for igniting a jet or spray of fuel in a fast moving air stream comprises a spring loaded piston operating in a cylinder, one side of the piston being exposed to the fuel pressure which opposes the spring loading, the cylinder space in the other side of the piston forming or communicating with a chamber in which air is alternately aspirated and compressed by the movements of the piston, the said air being utilized to initiate the action of the ignition device. The inlet 36, Fig. 1, of the cylinder 34 is connected to a branch from the fuel supply line downstream of the fuel cock, and the piston 22 is moved under the pressure of the fuel against the action of a spring 41. Towards the end of the latter movement an extension 24 of the piston 22 actuates a metering pump plunger 25 to deliver a measured quantity of an igniter fluid through a non-return valve 26 and connection 44 to a delivery line teminating at the burner. When the plunger 25 approaches the end of its stroke it uncovers a port 27 through which the air compressed between the piston 22 and the plunger 25 is released into the delivery line to blow the measured quantity of igniter fluid into the combustion region of the burner. At the return stroke of the plunger 25, effected by a spring 43, a fresh charge of igniter fluid is drawn into the pump chamber through the inlet 42 and non-return valve 28 and the space between the plunger 25 and the piston 22 is refilled with air, on the return stroke of the latter, through a non-return valve 29. Suitable igniter fluids are mentioned, in Specification 659,795. Alternatively, the fuel may be ignited by electrical means when the air space in the cylinder 34, Fig. 2 is connected with a chamber 46 containing a diaphragm 30 loaded by a spring 31 and having a stem 47 carrying a contact 48, which bridges the contacts 32 of an igniter circuit when the diaphragm 30 is raised by the pressure of the air compressed by the piston 22. A bleed hole 33 affords a controlled leak which after an appropriate delay, relieves the air pressure sufficiently to allow the spring 31 to return the' diaphragm 30 and contact 48 to the open circuit position. The apparatus shown in Fig. 1 or 2 may be modified to act as a fuel pressure accumulator as described in Specification 588,083, [Group XXVII].
Patent GB-531327-A (GB)
Title: Improvements in or relating to apparatus for feeding cut tobacco
IPC: A24C5/39
Filed: 1939-07-18
Abstract: 531,327. Feeding cut tobacco. MOLINS, D. W., RUAU, F. F., and MOLINS MACHINE CO., Ltd. July 18, 1939, No. 20846. [Class 130] In apparatus for feeding cut tobacco to cigarette-making, tobacco-packaging or like machines, in which the tobacco is carried by an endless carded conveyer or roller 2, a basket-like container 5 having a slotted bottom wall 6 conforming to the shape of the conveyer surface is reciprocated across the conveyer in order to remove surplus tobacco from the surface of the conveyer and to fill insufficiently filled areas of the conveyer. As shown, the wall 6 has slots extending lengthwise of the movement of the conveyer and having blunted edges. The container is reciprocated across the conveyer by a cylindrical cam 9 having a groove engaged by a roller 11 on a lever 12, the arm 13 of which is connected to a bridge piece 16 on slidable rods 17 to which the container is secured. The bottom wall of the hopper is formed by a carded roller 3 or by a roller having retractable feeding elements as described in Specification 394,809. A carded brushing roller 4 may be provided and a presser 28 and rake 29 as described in Specification 385,210. Short tobacco collected from the hopper, for example as described in Specification 446,701, may' be delivered to the container 5, the shorts being guided by plates 20 and conveyed by bands 21, 22 and delivered down a chute 122. In a modification, Fig. 4, each slot of the container is provided with one or more tooth-like elements 27 having tobacco-engaging edges. Specification 531,328 also is referred to.
Patent GB-208696-A (GB)
Abstract: 208,696. Etablissements E. Belin. Dec. 21, 1922, [Convention date]. Drawings to Specification. Ink.-Documents to be rendered in relief by steaming, powdering, and fusing, for telestereographic transmission, are written in ink made by adding sugar or gum and a hygroscopic substance, such as magnesium or calcium chloride, to ordinary writing ink.
Patent GB-901552-A (GB)
Title: Improvements in or relating to pneumatic tyres
IPC: B60C15/04
Filed: 1959-06-18
Abstract: 901,552. Pneumatic tyres. DUNLOP RUBBER CO. Ltd. June 18, 1959 [July 1, 1958], No. 20904/59. Class 144 (2). A pneumatic tyre has a reinforcement 5 confined to the bead regions 4 and side wall portions 5 and comprising a length or lengths 6 of inextensible filamentary material, such as steel cord, a portion of each length approaching and leaving the bead region substantially tangentially and being disposed in a circumferential plane. The reinforcement provides more even graduation of stiffness from the bead to the side wall and may be used either alone or in conjunction with a cord reinforced carcase and/or conventional wire bead cases. The reinforcement may comprise a plurality of evenly distributed separate lengths of steel cord which are either rectilinear, Fig. 3, concave or convex when viewed radially and the ends of which extend into the side walls for one quarter to one third the tyre section height. Alternatively, a single length of cord may be wound in a series of convolutions, Fig. 5, with each convolution being tangential to the bead region at one or more points, the tangential points of the convolutions being evenly spaced around the bead periphery. In a further arrangement, continuous closed rings of cord may be used.
Patent GB-646291-A (GB)
Title: Improvements in or relating to the manufacture of rubber hydrochloride film for packaging foodstuffs
IPC: C08C19/16
Filed: 1947-08-01
Abstract: In the production of rubber hydrochloride film by gassing rubber dissolved in a solvent, e.g. benzene or chloroform, with hydrogen chloride and evaporating the solvent from films of the solution so formed, the evaporated solvent is condensed, is distilled to render it free from the substances, obtained from the rubber, which would in a rubber hydrochloride film impart an undesirable flavour to foods packaged in the film, and is then re-used as a rubber solvent.
Patent GB-749228-A (GB)
Title: Yarn tension compensating device
IPC: B65H59/16
Filed: 1954-07-21
Abstract: 749,228. Yarn tension regulating means. SPECIALTIES DEVELOPMENT CORPORATION. July 21, 1954 [Sept. 23, 1953], No 21236/54. Class 120 (2). A yarn tension compensating device comprises a support 10, an internally screw-threaded sleeve 11, a grooved wheel 12 mounted on said sleeve having a brake surface at one side thereof brake means in friction contact with said surface, an externally screw - threaded member 15 threaded through the sleeve 11 and co-operating therewith tc vary the effectiveness of the brake means, spring means on said support for urging the member 15 in a direction to cause the brake means tc be rendered effective, and a yarn tension responsive arm 17 connected to the member 15 for decreasing the effec. tiveness of the brake means in response to an increase in yarn tension. As shown, the wheel 12 is formed of a pair of annular rims 45 and 46 mounted on a hub 37 freely rotatable on the sleeve 11. On either side of the wheel are braking surfaces formed by friction washers 60 and 61. The member 15 is formed at one end with a head 64 which presses through a spring washer 66 against disc 57 so as to urge the braking surfaces against the wheel 12. The other end of the member 15 is connected to the yarnresponsive arm 17 at the end of which is a yarn guide 71. The lower end of the arm 17 is connected to a spring 16 which urges the arm 17 in such a direction as to rotate the member 15 so as to increase the pressure between the friction washers 60 and 61 and the wheel 12. In operation yarn passes around the tension device 25 under the wheel 12 in the groove 47 and is then passed over the yarn guide 71. Increase in output tension rotates the arm 17 against the spring 16 so as to relieve the pressure between the friction surfaces and the wheel 12. The rims 45 and 46 of the wheel 12 are formed with alternate spokes and openings, the spokes of one rim engaging the openings of the other so as to avoid ripping of the yarn. A shield formed of cylindrical sections 52 and 53 is provided to protect the braking mechanism from liquid in treating wet yarn. Resilient stops are also provided for limiting movement of the arm 17.
Patent GB-1165903-A (GB)
Title: Random Selection Combination Switch
Inventor: DOUGLAS CLIFFORD GEORGE
IPC: G07C9/00
Filed: 1966-05-13
Abstract: 1,165,903. Combination locks. C. G. DOUGLAS and G. H. G. GUTTRIDGE. 22 Sept., 1966 [13 May, 1966], No. 21251/66. Heading E2A. [Also in Division G4] Switching means for controlling a door lock is set up by manually positioning at least two selector switches to any desired position, follow up switches then being driven until the contacts of the associated selector and follow up switches coincide. The selector switches are then moved so that to control . the member. they must be. reset in the previously selected position. In one embodiment (Fig. 1) selector switches MSA, MSB are positioned by a first operator who then closes a switch S1/S1A so that pulses from a pulse generator are supplied to solenoids A, B which operate stepping motors to drive the wipers of follow-up switches ASA, ASB respectively until the associated contacts coincide when the input signals to transistors Q4, Q5 are short circuited. A relay F is then energised and a lamp P1 indicate; that the first two decades are set. The first; operator may then scramble his selected combination and in a similar manner a second operator sets selector switches MSC, MSD, so that switches ASC, ASD are driven until their contacts coincide with the contacts of the selector switches. A relay E is then energised and a lamp P2 lit to indicate that the last two decades have been set and the selector switches may be scrambled. To operate the switch and energise. the relay E to control the member, the selector switches MSA to MSD must be set in the position represented by the follow-up switches. In a second embodiment the relay E is replaced by a motor driving a rotary cam switch to move a bolt.
Patent GB-1144148-A (GB)
Title: Improvements in valves for controlling fluid flow
IPC: F16K11/078
Filed: 1966-05-13
Abstract: 1,144,148. Valves. L. J. MILLER. 13 May, 1966 [17 May, 1965; 17 March, 1966], No. 21268/66. Heading F2V. A valve with hot and cold water inlets 18, 19 extending through a flat surface 21 into a chamber 35 has a control disc of plastics material 20 with spaced openings 22, 23 movable into registry with the inlets on rotation or reciprocation in a single plane by a handle 54, the disc being urged against the flat surface by yieldable sealing means 33. The handle has a ball 46 of plastics material mounted in a spherical seat 47 to form a universal pivot and a second ball 50 with pins 51 to form a driving connection with slots 53 in the disc, rotation being limited by ears 75 engaging the sides of a cavity 76 in a plastic sealing member 25 located in the body 13 by a projection 28. The inlets are provided with spring-loaded sealing rings 38 of rubber or other resilient material while the outlet 10 has a tube 60 to return water through a passage 61 to a rinse tube (not shown). In a modified construction, the handle is provided with a member of inverted cup shape containing a spherical face to engage a corresponding face on the sealing member. Flats on the spindle and member prevent relative rotation between them so that the pivotal and rotary movements take place between the spherical surfaces, the handle being connected by a transverse pivot pin with the control disc. Rotation of the latter is limited by ears on the cup-shaped member co-operating with flat faces on the sealing member.
Patent GB-1213053-A (GB)
Title: Steam generator combustion chambers
IPC: F22B37/20
Filed: 1968-05-06
Abstract: 1,213,053. Fluid-pressure servomotor systems. SULZER BROS. Ltd. May 6, 1968 [May 11, 1967], No.21352/68. Heading G3P. [Also in Division F4] A steam generator combustion chamber 1 is bounded by four vertical gas-tight tube walls 16, 17, 18 and 19 and by a tube bottom 20, said walls being surrounded by a girdle of four rigid beams 36, 37, 38 and 39 formed by flanged girders of H- section, pairs of the girders 36, 37, 38 and 39 being permanently joined to form a right-angle, the free ends of adjacent girders having mounted therebetween adjusting means arranged to be controlled so that the circumference of the girdle varies in dependence on the thermal expansion of the circumference of the tube walls. As shown, hydraulic servomotors 4 and 4<SP>1</SP> are mounted between the free ends of the flanged girders 36, 39 and 37, 38, each servomotor being controlled by a control valve 26 which communicates by pressure medium lines 14 and 15 with the two cylindrical chambers of the servomotor. For the servomotor 4 (the same applies for 4<SP>1</SP>), the complete cylindrical chamber is mounted on the end of the girder 39 while the piston rod is connected by a pivot to the end of the other flanged girder 36. In another embodiment, the servomotors do not directly join the free ends of adjacent girders to each other, instead each piston is pivoted to the long arm of a bell-crank lever (43) which is connected to a link 44, Fig.2 (not shown). Also in this embodiment, each servomotor is under the influence of the pressure which prevails in the combustion chamber 1, a diaphragm cell controlling the pressure in the cylinder of each servomotor.
Patent GB-1510003-A (GB)
Title: Synchronous belt drive
IPC: F16G1/28
Filed: 1975-05-19
Abstract: 1510003 Belt gearing TSUBAKIMOTO CHAIN CO 19 May 1975 [24 May 1974] 21354/75 Heading F2Q A positive-driving belt 46, Fig. 9, has elastic teeth 48 with concave flanks 47 adapted for engagement with a toothed wheel, these elastic teeth having been shaped by means of an externally-toothed forming tool 11<SP>1</SP>, Fig. 6, having a tooth contour 30 which in turn had been generated by means of a rack-type gear cutting tool 33, Fig. 7, with substantially straight flanks 34 to its teeth. In use, the belt may be engaged with a toothed wheel of a substantially involute convex tooth form 42, Fig. 11, similar in tooth contour to that of the forming tool 11<SP>1</SP> of Fig. 6, except for the fact that the teeth of forming tool 11<SP>1</SP> have a pressure angle which is larger than the pressure angle of the belt teeth 48. Fillet radii replace sharp corners at tip and root of every tooth, and resulting interference is accommodated by elasticity of the belt teeth.
Patent GB-1458540-A (GB)
Title: Magnetic transducer heads
IPC: G11B5/39
Filed: 1974-09-18
Abstract: 1458540 Magnetoresistive transducer heads INTERNATIONAL BUSINESS MACHINES CORP 18 Sept 1974 [20 Sept 1973] 21372/76 Divided out of 1458539 Heading G5R A magnetic transducer head in interacting re - lation with a magnetic recording medium (not shown) having multi-wavelength information re - corded thereon includes a pair of magnetically permeable members 15, 16 and a transducing element 11, 12 having at least one layer 11 of magnetoresistive (MR) material in the space between opposing faces of members 15, 16, the distance s between members 15 and 16 being less than the shortest wavelength of the recorded information on the recording medium, and the edges of members 15, 16 and of layer 11 closest to the recording medium all lying in the same plane, i.e. a "plane" as defined in plane geometry or one on the surface of a sphere or cylinder as defined in spherical geometry. The spacing s between the members 15, 16, which act as shields to the MR element 11, 12, is preferably 30 to 40% of said shortest wavelength and may be in the range of 30 to 120 microinches. The members 15, 16 may be equispaced from or asymmetric to the MR layer 11. The transducing element may be of the shunt bias type disclosed in Specifications 1,437,008 and 1,437,009, wherein current from a source I flows partly through an MR layer 11 and partly through a shunt layer 12, the current through the layer 12 producing a magnetic bias field in layer 11. The transducing element may have more than one MR layer and bias layer in combination, each shunt bias layer may be placed between two MR layers, an MR layer may be placed between two shunt bias layers, two MR layers may bias each other, or any of these arrangements may be combined. As shown, insulating layers 13, 14 each of 25 microinch thick Al 2 O 3  are located one on each side of an element formed by an 83% Ni, 17% Fe (Permalloy) MR layer 11 of 1À2 microinch thickness on a 5À4 microinch thick titanium shunt bias layer 12, layers 11, 12, 13, 14 being located between ferrite or permalloy members 15, 16 to form an assembly which is clamped in housing plates 19, 20. The MR layer 11 is deposited on the layer 12 in a magnetic field which aligns the domains perpendicular to the throat height h. The head so formed may be a multitrack head having a respective read/write or read only MR element 11, 12 for each track.
Patent GB-1099864-A (GB)
Title: Digestion of titanium-bearing ores
IPC: C22B34/12
Filed: 1966-05-13
Abstract: Titanium compounds are recovered from titanium-bearing materials by a process that comprises digesting said materials in a concentrated mineral acid in the presence of a surfactant, thus obtaining an aqueous solution of a water-soluble titanium compound.  The surfactant, which may be present in quantities not more than 10% by weight based on the weight of titanium bearing materials, may be non-ionic, anionic or cationic, and suitable compounds include, a polyoxyethylene alkyl quaternary ammonium salt, a long chain aryl polythylene oxide condensation product, a polyethylene glycol or a dialkyl ester of sulphosuccinic acid. The mineral acid used may be concentrated sulhuric acid of at least 80% by volume, the digestion step may be performed at an elevated temperature, and the titanium bearing materials may be ground to below 325 mesh (U.S. stanard).
Patent GB-1197877-A (GB)
Title: A Roof Bolt
Inventor: ASTLEY HAROLD TREVOR
IPC: F16B13/06
Filed: 1969-04-28
Abstract: 1,197,877. Anchor bolt. TORQUE TENSION BOLT CO. (PTY.) Ltd. 28 April, 1969, No. 21643/69. Addition to 1,148,054. Heading F2H. In a roof bolt a tapered, circular cross-section expander 14 engages the conical bore of a shell 15 which becomes progressively narrower externally towards its lower end and which is made up of a plurality of segments of arcuate cross-section which abut a support member 22 at, and progressively increase in thickness towards, their lower ends, each segment having one or more ridges of a cross-section substantially different from an isosceles triangle and a slot 19 which extends from the upper end towards and almost to the lower end, the expander 14 having rib means 18 engaging the shell for limiting rotation of the expander. The expander ribs 18 may engage the slots 19 in the segments or lie between the segments. The segments may be of malleable east iron and are held together before expansion of the shell by a plastic band 23. The ridges may extend along or transverse the axis of the shell, or may follow a helical path, and various cross-sectional shapes are illustrated (Figs. 3-11, not shown). The cone angle of the expander may be 5 to 10 degrees, that of the bore being about 2 degrees less. The upper corners of the segments may be rounded and chamfered. During expansion of the shell each segment may break into two parts along slot 19.