baber/WOPTO huggingface dataset:
Patent GB-1273206-A (GB)
Title: Improvements in cutting heads for timber
Inventor: LINCK KLARA
IPC: B27L11/00
Filed: 1969-07-04
Abstract: 1,273,206. Cutter head for chipping wood. KLARA LINCK. 4 July, 1969 [15 March, 1969], No. 33806/69. Heading B5L. A cutter head 2 for the profile chipping of round timber I comprises a plurality of groups of blades 4, 5 rotatable about an axis which extends normally of a support surface 9 located adjacent one end of the cutter head, the surface 9 being arranged to engage the machined surface 3 of the timber when the cutter head is in use, the cutting tips of the blades 4, 5 being located on at least one imaginary spiral line in a truncated conical surface 14 tapering in a direction towards said one end of the cutter head. In the embodiment shown, a pair of cutter heads is arranged to form parallel machined surfaces 3 on the timber 1. Each head comprises a drive shank 12, a body 11, a plurality of blades 4, 5 carried by the body, and a disc 6 mounted on the body 11 so as to be freely rotatable and to from the surface 9. The blades 4 are tearing blades which cut chips transversely from the timber 1, and the blades 5 cut parallel to the wood fibre and remove the chips. In a second embodiment the disc 6 is replaced by a ring and the blades are mounted on ribs which extend tangentially to an imaginary cylinder within the ring. The member forming the support surface may be partly frusto-conical or rounded.
Patent GB-990400-A (GB)
Title: Improvements in or relating to saw chain bars
IPC: B27B17/04
Filed: 1962-09-04
Abstract: 990,400. Sawing. SANDVIKENS JERNWERKS A.B. Sept. 4, 1962 [Sept. 12, 1961], No. 33857/62. Heading B5L. A chain saw bar assembly comprises a groove 3 to receive the drive links 10 of the chain and longitudinal edges 14 to support the side links 15, 16 of the chain, and a free-end idler wheel 6 having teeth 19 with inclined edges 22, 23 to supportingly co-operate with the drive links, the teeth being of sufficient depth to leave a space 24 between the bottom of the teeth and the innermost parts 25 of the drive links so that the chain is supported radially of the idler wheel solely by the inclined edges. The bar has a centre plate 2 between two side plates 1 to form the groove 3, edges 14 and a recess 5 for the idler wheel. A hub 8 is secured by rivets or bolts 7 to the side plates and serves as the centre member for balls or rollers 9 supporting the idler wheel. The side links have edges 17 which contact the edge 14 of the bar at their ends, the middle of the links being spaced from the edge 14. The side links are lifted away from the end part 18 of the side plates by the inclined surfaces 22, 23 of the teeth 19 of the idler wheel engaging the inclined surfaces 20, 21 on the drive links, which surfaces may be straight or curved. The inner surfaces 12 of the drive links act to clean out sawdust from the spaces 24 between the teeth 19 and from the groove 3.
Patent GB-947735-A (GB)
Title: Improvements relating to automatic control equipment for steam turbines
Inventor: FENWICK DENTON ROWLAND
IPC: H02P23/00
Filed: 1961-09-21
Abstract: 947, 735. Programmed control of steam turbines. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 17, 1962 [Sept. 21, 1961], No. 33874/61. Heading G3N. In a programmed running-up arrangement for a steam turbine a steam supply valve is positioned by a velodyne, comprising an amplifier supplying a motor driving a reduction gear-box with negative feedback being applied to the input of the amplifier from a tachogenerator driven by the motor. An input to the velodyne is provided through a run-up amplifier from a differential amplifier having an output dependent on a companion between a turbine speed current, derived through a rectifier from a tachogenerator driven by the turbine and a reference current from a rectifier, such as a magslip or synchro, positioned by a velodyne having an input from a pre-set voltage source through a run-up switch so that the reference current increases linearly with time. The run-up switch is opened by a hold relay when limiting conditions, sensed by eccentricity, vibration, vacuum and temperature devices, are exceeded. A run-down relay is also actuated by the device which closes a run-down switch in a feedback loop from the differential amplifier to the reference velodyne so as to keep the reference current in step with the turbine speed and also isolates the input to the steam valve velodyne. A transducer connected between the inlet and exhaust of the turbine gives an output which is fed back in a negative sense to the amplifier of the steam valve velodyne to provide a rapid response negative feedback for stabilizing the speed-control. The programme can be varied by timed adjustment of the pre-set voltage or by successively employing velodynes having different characteristics.
Patent GB-605123-A (GB)
Title: Improvements in and relating to arc-chute housings for electric circuit breakers
IPC: H01H9/34
Filed: 1945-12-14
Abstract: 605,123. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 14, 1945, No. 33937. Convention date, Dec. 20, 1944. [Class 38 (v)] A box-like housing for the arc-chute of a circuitbreaker, such as that described in Specification 562,429, comprises insulating sheets 10 ... 14 joined at their edges by insulating members 19, Fig. 6, having recesses 22 formed between flanges 20 and a central part 21, into which recesses the sheets can be slid or sprung. The flanges 20 are preferably initially curved inwardly, and have tongues 24 engaging grooves 23 in the sheets for locking the whole in place. Alternatively, or additionally, the sheets may have holes 25 receiving depressions 26 preformed in the members 19. Partitions 15 separating the individual poles are located by grooves 27 in the sheets 10 ... 12 and fixed thereto by being slotted to engage slotted dowel pins 28 engaging holes in the sheets. The members are preferably formed of cellulose ester plastic material such as aceto-butyrate. The method of assembling the box is described. Specifications 541,612 and 605,124 also are referred to.
Patent GB-926628-A (GB)
Title: Improvements relating to nuclear reactor fuel elements
Inventor: DARLASTON BRIAN JOHN
IPC: G21C3/10
Filed: 1958-10-22
Abstract: 926,628. Fuel elements. ENGLISH ELECTRIC CO. Ltd. Oct. 22, 1959 [Oct. 23, 1958], No. 34009/58. Class 39 (4). A tubular fuel element filled with a gas, e.g. He, is closed by a tightly-fitting plug 12 which is fitted by creating a temperature difference between it and the can 10, preferably by cooling the plug, inserting the plug, allowing the temperaature difference to disappear, and welding the plug to the can at 13. The mating surfaces of the plug and can may be roughened. The plug may be threaded internally at 14.
Patent GB-1127669-A (GB)
Title: Writing instrument
IPC: B43K24/08
Filed: 1966-07-28
Abstract: 1,127,669. Retractable ball-point pens. H. BROSS. 28 July, 1966 [2 Aug., 1965], No. 34018/66. Heading B6P. The subject matter of this Specification is: similar to. Specification 1,099,569, but the claims are directed to a different orientation of the guide edges 7, 8 and 9 of the latching mechanism.
Patent GB-959841-A (GB)
Title: Improvements in or relating to implements for the working of crop lying on the ground
IPC: A01D78/00
Filed: 1960-10-04
Abstract: 959,841. Haymaking machines. C. VAN DER LELY N.V. Oct. 4, 1960 [May 10, 1960], No. 34019/60. Heading A1F. Relates to a haymaking machine of the type having a rotary reel formed by discs 23, 24 interconnected by oblique tine-bars 20 and wherein the frame comprises beams 8, 9 parallel to the tine-bars & together supporting a series of rods 28, 29 which extend around the surface of revolution swept out by the tine-bars. According to the invention, the tine-bars move through a closed path of a diameter between 25 and 65 centimetres. The rods 28, 29 adjacent to the beam 9 are provided with guiding-rods 31 which extend upwardly beyond the beam, the guides 31 being located in vertical planes which extend rearwardly from their corresponding rod. The machine is mounted on three castor-wheel assemblies 86, 87, 88 and is attached to a towing tractor by a pair of draught links 64, 65, at least one of which (Fig. 7) is telescopic and incorporates a compression spring 71 surrounding a rod 68 which is movable, against the spring, within a sleeve 69. The rear end of each link is universally jointed at 75, 77 to a lug 78 on a cross member 5 of the implement frame. The frame includes a pivoted parallelogram 6, 8, 9, 10 with vertical pivot-pins 11, 12, 13, 14 at its apices, one apex incorporating a locking sector 15 whereby the obliquity of the frame may be varied. The reel is driven from the tractor through a chain-transmission 45, 46 (Fig. 4) in a casing 48 which can be swung over to either side of the implement frame so that the implement may occupy different positions relatively to the tractor. Each castor-wheel assembly such as 88 (Fig. 3) is a parallelogram-linkwork including a vertical standard 100 secured to a frame-member 10, and a bearing 101 for the vertical spindle 102 of the castor-wheel 4 connected to the standard by pivoted parallel links 103, 104. All the assemblies are connected by rods 105, 107, 110 to a bell-crank 106 so that vertical adjustment of the linkwork of the assembly 87 by means of a crank 117 (Fig. 4) will simultaneously adjust the other assemblies. In addition, the rear assembly (Fig. 3) has a separate crank-adjustment 123. Specifications 959,842, 959,843 and 959,844 are referred to.
Patent GB-650839-A (GB)
Title: Improvements in machines for boring and other machining of connecting rods
IPC: B23B41/12
Filed: 1947-12-23
Abstract: 650,839. Boring connecting rods. SEEST MASKINFABRIK AKTIESELSKAB, M. Dec. 23, 1947, No. 34074. Convention date, June 27, 1946. [Class 83 (iii)] A machine for boring, chamfering, facing and grooving connecting rod big and little ends has two parallel spindles at adjustable centres and two clamping brackets, one of which is adjustable, the brackets being adapted to secure the work in such a manner that both of the connecting rod ends are accessible for machining at one setting. The machine comprises a base 1, Fig. 1 (plan), carrying a stationary housing 3 for a boring spindle 233 operating on the big-end bore of a connecting rod, and a further housing 5, movable along horizontal guideways 4, carrying a boring spindle 253 for the littleend bore. A table 6 is mounted on the bed for movement along guideways thereon in a direction parallel to the axes of the boring spindles and clamping devices 7 and 8 are arranged on the table for clamping a connecting rod. The clamping device 7 has a pair of vertically movable jaws 199, 200, Fig. 2, which grip the work at the big-end. The clamping device 8 is provided with jaws 221, Fig. 5, which are adapted to grip the side faces of the connecting rod between the big- and little-ends. A handle 223 operates right- and left-hand threads for the jaw arms 218, 219 of this device, and, an enlarged bore is provided in the lower ends of these members where they move about a hinge-pin so as to allow for slight downward movement against the pressure of a spring 229 during the clamping. The clamping device may be adjusted along a central groove in the table 6 to provide for connecting rods of different lengths. Spindles.-The boring spindles are similar in design and comprise a hollow shaft 92, Fig. 2, with a bore tapered at the forward end to take the shank of a cutter-bar 233 which is drawn into the taper by a screwed rod 164 passing through the bore in the spindle and turned by a hand wheel 162. The spindle is belt-driven at 39 and may be adjusted axially to take up wear by means of a screwed bearing sleeve 155 and lock-nut 167, the forward end of the spindle being arranged in a tapered bearing 149. The movable spindle housing 5 may be brought against an adjustable stop 182 where a number of connecting rods of equal length are being operated upon; a scale may also be provided to indicate the centre distance between the boring spindle axes. In setting up the machine a mandrel with double conical washers is secured in the movable boring spindle and to the littleend of the connecting rod. The table 6, clamping devices, and movable spindle, are then adjusted until the big-end is in position for being operated upon by the fixed boring spindle. The latter may also be used to face the big-end bearing. Specification 604,315 is referred to.
Patent GB-1018058-A (GB)
Title: Fluid flow reversing valve apparatus
IPC: G05D11/00
Filed: 1964-08-20
Abstract: 1,018,058. Valves; piston rings. ROBERTSHAW CONTROLS CO. Aug. 20, 1964 [Oct. 1, 1963], No. 34108/64. Headings F2T and F2V. [Also in Divisions F1 and F4] General arrangement.-Upon moving a fourway electromagnetically-actuated sliding-type pilot-valve 51, Fig. 1, to the position shown the discharge side of a compressor 23 is connected to one chamber 32 of a main four-way sliding- type reversing-valve 28 whilst the opposite chamber 34 is connected to the suction side of the compressor whereupon the main valve moves to the position shown to interconnect two heat-exchangers 21, 22 so that one acts as a condenser and the other as an evaporator. When the pilot valve is shifted to its other position the main valve 28 is reversed as are the functions of the heat exchangers 21, 22; the latter may be disposed one inside and the other outside a building, the two positions of the main valve providing for heating and cooling the building in winter and summer, respectively. The heat exchangers, which are in circuit with the compressor 23 through the main valve 28, are interconnected via a restrictor 43. In another form the main valve 28A (Fig. 3, not shown) is of the three-way type and controls a spring-loaded single-acting piston 159. In the position shown the pilot valve 51A causes a supply of high pressure 151 to move the main valve 28A into the position shown and so enable the supply 151 to elevate the piston 159. Reversal of the pilot valve 51A and hence the main valve 28A vents the space beneath the piston 159 to a low-pressure source 153 and permits the piston spring to retract the piston. Main valve.-The main valve consists of a pair of opposed pistons 30, 31 (Fig. 5, not shown) joined by rigid member 69 housing the D-shaped sliding valve 28 which is loaded into contact with a surface 67 embodying three ports 36-38. Each piston is provided with a rubber sealing ring 75 in a separate or integral annular band of PTFE or polytrifluorochloroethylene; alternatively the ring 75 may be coated with either of these plastic materials. The pistons may be replaced by one or a pair of opposed diaphragms which may be spring- loaded; the slide valve may be loaded by a leaf spring acting on its upper surface. Pilot valve.-The pilot valve comprises an armature 105 (Fig. 8, not shown), connected with lost motion to a coaxial plunger 108 by a rod 109; the plunger 108 is operatively connected to the pilot slide valve 51 by a lever 126, which valve is loaded by a spring 133.
Patent GB-840859-A (GB)
Title: Improvements in or relating to the manufacture of polyolefins
Inventor: ENTWISTLE NORMAN
IPC: C08F6/02
Filed: 1957-11-01
Abstract: A continuous process for working up a polyolefin produced by a Ziegler low-pressure polymerization process, comprises contacting the polymerization product with a lower (i.e. one containing up to 6 carbon atoms in the molecule) aliphatic alcohol, agitating the resulting slurry with or without prior separation of an alcoholic phase therefrom, with an aqueous extractant, subjecting the resulting water-containing slurry mixture to phase separation, removing the aqueous phase containing alcohol and removing inert solvent from the slurry so as to isolate the polyolefin by first removing supernatant solvent and then the remaining solvent by heat treatment under reduced pressure.  Specified olefins are ethylene, propylene, butylene and their mixtures.  The inert solvent may be a hydrocarbon and the extractant a dilute aqueous alkaline one, some of the alcoholic aqueous phase being returned to the aqueous alkaline agitation stage to maintain the alcoholic concentration at 15 to 20%. The polyolefin-solvent slurry may be washed by agitation with water containing a small amount of a surface-active agent.  Apparatus for carrying out the process is described.  Specifications 799,392, 799,823, 801,031, 801,554, 810,023, 819,867 and 820,263 are referred to.
Patent GB-761381-A (GB)
Title: Improvements in or relating to apparatus and process for the separation and purification of solidifiable materials from solutions and liquid mixtures
IPC: C07C7/14
Filed: 1953-12-09
Abstract: <PICT:0761381/III/1> Crystals are purified and freed from mother liquor in apparatus in which a slurry of crystals and mother liquor formed in a crystallizer 26 is forced through a plurality of feed arms 11 by reciprocating plungers 12 or by other means into a common purifying zone 10 at the end of which the crystals are melted by a heater 29.  Between the melting zone and the feed ends of the arms 11 at least one filter is provided for removal of mother liquor and reflux crystal melt.  As shown each arm 11 has a peripheral filter 22 for removal of mother liquor and another filter 40 for removal of reflux is provided at the junction of the feed arms and the purifying zone 10.  Reflux from line 42 may be recycled to crystallizer 26.  A third filter 32 may be provided to enable crystal melt to be recirculated through the melting zone, if desired through a heater 36, to improve heat distribution in the melting zone.  Product is removed at 38. Reflux ratios (ratio of reflux removed at 42 to product removed at 38) of from 0.01 to 1.0 to one are stated to be sufficient to give a product of 99 per cent purity.  Automatic control means are described for synchronizing the strokes of the plungers 12 either in phase or out of phase.  The crystallizer 26 described as a scraped surface chiller with an auger acting to feed a crystal slurry to the branch 28.  Figs. 3 and 4 (not shown) illustrate an apparatus with four feed arms.  In examples, 85 per cent cyclohexane is purified to 98 per cent purity using various feed rates, reflux ratios and sizes of purifying zone.  Specification 734,756 is referred to.
Patent GB-1076406-A (GB)
Title: Improvements in or relating to automatic telephone circuit arrangements
Inventor: PEARCE OWEN AVIS
IPC: H04Q3/00
Filed: 1963-08-30
Abstract: 1,076,406. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. July 20, 1964 [Aug. 30, 1963], No. 34316/63. Heading H4K. In an exchange in which some subscribers have dials for sending break impulses whilst others have key-senders for sending coded leg-signals, the registers are provided with means for responding to transmission of either form. The leg-signals consist of the connection of earth to either or both legs directly or through a diode, as indicated in Fig. 1, and each such signal is preceded by a loop break. Thus, when line relay A relapses in response to a break, high-speed relays AA, AB pull up and present code relays W, X to the legs of the line, neither being affected if the break is the result of dialling. It should be noted that the latter relays are momentarily short-circuited until LC pulls up in order to charge the line-toearth capacitance which might otherwise cause false operation of the relays. In the case of dialling, relay RL follows LC and the impulses are repeated to a relay counting chain, Fig. 4 (not shown), which controls for each digit the select magnets SM of a 7-bridge cross-bar switch. The registration is completed by the operation in succession of the bridge magnets, Figs. 4, 5 (not shown). If, on the other hand, either or both of relays W, X energize, the operation of RL is prevented and SS pulls up to present to the legs of the line relays Y, Z which have reverse battery connections. The line-to-earth capacitance is charged as before. Relays W . . . Z, or their slave relays, directly control the select magnets SM with the assistance of relays K, KR if the " digit " concerned is 10. . . 12.
Patent GB-924655-A (GB)
Title: Improvements in or relating to pharmaceutical preparations
Inventor: ROY KRISHNABANDHU NATH
IPC: A61K31/16
Filed: 1961-09-26
Abstract: A parenteral injection for reducing the cholesterol level of the blood comprises a sterile aqueous emulsion of ethyl linoleate. The emulsifying agent is glycerol mono stearate and glucose is added as a stabilizing agent.  Emulsification is carried out in an inert atmosphere and sterilization is in an autoclave at a pressure of 15 lb. per square inch. p
Patent GB-367878-A (GB)
Title: Improvements in or relating to sounding apparatus
IPC: G01S7/524
Filed: 1930-11-15
Abstract: 367,878. Echo-sounding apparatus; mercury switches. MARCONI INTERNATIONAL MARINE COMMUNICATION CO., Ltd., Marconi House, Strand, and SLEE, J. A., 16, Raphael Street, both in London. Nov. 15, 1930, No. 34447. [Class 118 (ii).] In echo-sounding apparatus for use on ships, means are provided to prevent an emission of pressure waves unless the vessel is in a position lying between predetermined limits of move. ment. Means are also described for preventing the emission when the vessel is rolling in a particular direction. Further, in order to remove air from the pocket in which the transmitter is situated, a pipe is led from the top of that pocket to a point above the water line. The invention is described as applied to an apparatus using the directional piezo-electric transmitter-receiver described in Specification 145,691, [Class 118 (ii), Signals], the time interval between the emitted and received sounds being measured by the means described in Specification 339,662, [Class 118 (ii), Signals]. The transmitting apparatus includes a switch comprising two inclined tubes C, D containing mercury normally completing a circuit between contacts C2, C1, D1, D2, as shown. If the vessel rolls more than a predetermined amount the circuit through this switch is broken. If desired, a second switch operated by pitching movements may be provided. A single inclined tube placed athwartships and containing mercury and two contacts forms a switch for preventing emission when the ship rolls in a direction away from the upper end of the tube, this switch action being due to the inertia of the mercury. Operation. At the beginning of the cycle a cam, not shown, on a shaft A closes certain contacts to prepare the time-measuring device for operation. It also closes contacts Y in circuit with a retaining winding J of a relay having an operating winding E and three pairs of contacts L, M, S. A second cam X of the shaft A closes a contact B and, provided the mercury switch CD is closed, operates the relay through the winding E. The retaining circuit is formed by the closing of contacts L, the closing of contacts M completes the anode circuit of a valve in the time-measuring device and the contacts S cause the discharge of a condenser U through a transformer T. The secondary of the transformer is connected to the transmitter and also to the time-measuring device. A pointer then commences to move in this device and it is arrested, by means not shown, on the return of the echo. The various circuits, including that containing the contacts Y, are finally opened by the first cam and a demagnetizing current is sent through the time-measuring device. The condenser U is " trickle " charged through a resistance Q.
Patent GB-394243-A (GB)
Title: Improvements in or relating to rings for marking birds and animals
IPC: A01K35/00
Filed: 1932-12-06
Abstract: 394,243. Marking-rings for birds &c. KING, H. M., 1, Augusta Street, and LIVERINE, Ltd., Fraser Street, both in Grimsby. Dec. 6, 1932, No. 34591. [Class 73.] A marking-ring for birds &c. comprises a strip of resilient material having at each end a transversely inclined slit b opening on opposite edges whereby the ends overlap and interlock when the strip is bent in the form of a ring. The hook parts may be offset so as to form shoulders d.