baber/WOPTO huggingface dataset:
Patent GB-1079518-A (GB)
Title: Oxyalkylation products and polyurethane foams thereof
IPC: C08G18/64
Filed: 1965-07-01
Abstract: Thermoplastic wood resins which are soluble in aromatic hydrocarbons but which are substantially insoluble in aliphatic hydrocarbons and which have an average softening point of about 185 DEG  F. to about 250 DEG  F., are obtained by solvent extraction from pine wood.  The pine wood, preferably in shredded form, is treated with an aliphatic solvent such as petroleum ether, gasoline, heptane or hexane, to extract terpene and rosin-type materials and is then treated with an aromatic solvent such as benzene, toluene, naptha or xylene to extract the desired resins.  The solvent is then evaporated or distilled off.  An alternative method of obtaining the wood resins comprises subjecting the pine wood to extraction with aromatic hydrocarbon solvents to remove with the resin-type materials and the aliphatic hydrocarbon, insoluble materials.  The solvent is then separated from the resinous materials.  Pine oil, turpentine and other volatiles are removed from the resinous residue by distillation and the remainder is extracted with aliphatic solvents leaving the thermoplastic wood resins.ALSO:Oxyalkylation products are prepared by reacting an alkylene oxide having 2-4 carbon atoms with a thermoplastic wood resin obtained by solvent extraction of pine wood, said resin being soluble in aromatic hydrocarbons and substantially insoluble in aliphatic hydrocarbons. Suitable resins are those having an average softening point of about 185-250 DEG  F., e.g., those having the Trade Marks "Vinsol," "Belro" and "Solo."  The process may be carried out by dissolving the resin in the alkylene oxide and conducting the reaction in a pressure vessel, or by dissolving the resin in an inert solvent or in a conventional polyether polyol and then reacting the solution with the alkylene oxide. The products having a hydroxyl value of 50 to 500 are used in the manufacture of rigid and flexible polyurethane foams.  In the preparation of rigid foams, it is preferred that the oxyalkylation products have a hydroxyl number of 200-500 while products of number 50-70 are useful for preparing flexible foams.  The foams are prepared by reacting the oxyalkylation product, which may be blended with a polyether polyol conventionally used in polyurethane production, with an organic polyisocyanate in the presence of a catalyst, a blowing agent and an emulsifier. Amine compounds may also be present in the reaction mixture.  The prepolymer method for the preparation of foams is also described in which a polyurethane resin is cured in the presence of a catalyst, suitably a tertiary or hydroxy amine or an organic salt of tin.  To convert this to a foam, a gassing agent, preferably a halocarbon, is added.  An emulsifier and/or surfactant may be present in the reaction mixture.
Patent GB-656694-A (GB)
Title: Furnace loading mechanism
IPC: C22B1/14
Filed: 1948-10-28
Abstract: 656,694. Hopper feed; shaker conveyers. ERIE MINING CO. Oct. 28,1948, No. 28023. Convention date, Nov. 5, 1947. [Class 78 (i)] [Also in Group XII] Pellets of finely-divided ores such as iron ore concentrates are charged into an indurating shaft furnace which is traversed by heating gases by a device comprising a stationary shoot 20 shaken by a vibrator 21 and a rotary feeder sweep 19 mounted on a carriage 15 driven through a shaft 17 and supported on a circular track 14 concentric with the mouth of the furnace. The feeder sweep 19 comprises a vibrated shoot 24 having a protective collar 23 surrounding the shaft 17 and receiving pellets from the shoot 20, and a vibrated secondary shoot 25 divided into channels by guide vanes 29 adjustably fixed by nuts 32 in a transverse slotted bar 31 and hinged as at 36 to partitions 30. Each channel delivers pellets at the stock line of the furnace by spouts 26 which are arranged alternately either in the direction of rotation R or oppositely thereto, and which decrease in width and in height above the stockline from the axis of rotation outwardly. A hood comprising stationary and revolving parts 48, 49 respectively encloses the mechanism and is provided with alcoves for the vibrators 21 and 27 and with exhaust pipes 47 subject to the action of a pump.
Patent GB-265304-A (GB)
Title: Improvements in mixing machines for concrete, tarmacadam and the like
IPC: B28C5/14
Filed: 1925-11-07
Abstract: 265,304. Blake, L. J. B. Nov. 7, 1925. Stationary mixers with rotary stirrers.-A mixing machine for concrete, tar macadam, &c. comprises a stationary drum which can be tilted for discharging and is fitted with charging and discharging orifices, and mixing scoops which rotate about a horizontal axis and are similar to elevator buckets, their forward edges extending the entire length of the drum, while their rear edges are shorter, and are spaced from the shaft, thus producing a cataract-like action on the' material. A pivoted charging shoot is provided, and the drum is fitted with cushioning devices to absorb the shock when the scoops encounter obstructions. The drum, which may be formed in upper and lower sections a<1>, a<2>, Fig. 2, is mounted on a shaft b carried on standards on a wheeled base d, and is charged by a pivoted shoot p, through an orifice n. The shoot p is fitted with quadrants r in gear with pinions s operated' through clutch gear from a motor on the base. The mixing scoops e, Fig. 3, are rotated by the shaft b from the motor and are fitted with replaceable serrated leading edges m working near the periphery of the drum. The rear edges g are shorter than the leading edges and leave a space i through which the material is shot as the scoops rotate; the spaces between the leading edges may be provided with fillings m<1>, and the scoops are braced by bars k. The drum is tilted to discharge the mixed material through an orifice o by means of cables 21, Fig. 6, which pass round a hand or power-operated pulley 19, the ends of the cables being resiliently secured by springs 25 and eye bolts 23. These connections absorb any shock caused by the scoops meeting obstructions. The apparatus may be mounted on a stationary base and be operated by a power pulley from an outside source; it may be used in conjunction with drying drums and a furnace.
Patent GB-955025-A (GB)
Title: A gaseous fuel-burning cooking stove
Inventor: MEJYR CARL-ANKER
IPC: F24C3/14
Filed: 1962-07-20
Abstract: 955,025. Portable gas cooking stoves. BAHCO A.B. July 20, 1962, No. 28056/62. Heading F4W. A portable cooking stove burning gaseous fuel has a drip tray 15 located centrally at its upturned flange by the portions 16 of the utensil support 14, which in turn is located by the burner head 5 screwing through its collar 6 on to the top of a fuel container 1. A valve is controlled by knob 4 and supports 10 for the drip tray enter recesses 11 in the legs 2. The utensil support 14 is rotatable to facilitate cleaning.
Patent GB-209817-A (GB)
Title: Improvements in means for lubricating the axles of vehicles
IPC: F16N11/02
Filed: 1922-10-16
Abstract: 209,817. Stevens, W. V. Oct. 16, 1922. Addition to 152,992. Channels in vehicleaxle bearings.-The device of the parent Specification for lubricating the bearings of vehicle wheels is modified by dispensing with the tube and connecting the force-feed grease cup A itself to the lubricating passageway C either directly or through the medium of a nipple F and a socket G. while the passageway C is formed by two holes meeting inside, the axle, the first hole being drilled from the stationary axle portion under the collar D and the second from the journal portion E.
Patent GB-873817-A (GB)
Title: Cyclic esters of boronic acids and a process for their preparation
IPC: C07F5/02
Filed: 1959-08-18
Abstract: The invention comprises a cyclic diester of an arylboronic acid with a nitrogen-free diol, the diol containing at least 3 carbon atoms, and preferably being a 1,3- or 1,3-diol.  The esters may be made by condensing an aryl boronic acid or its anhydride and a nitrogen free diol containing at least 3 carbon atoms by heating a mixture of these two substances with or without a solvent.  Thus the aryl boronic acid and diol mixture may be heated to a temperature capable of giving rise to fusion while water is eliminated by application of a reduced pressure.  In another method, the condensation may be effected in an inert solvent such as benzene, toluene or a mixture of alcohol and benzene, the water formed being removed by vacuum or azeotropic distillation.  When the diol and aryl boronic acid are both soluble in water or in an aqueous alcoholic mixture and the resulting ester is insoluble, the condensation takes place without heating.  The reactants are mixed and the ester is precipitated on standing.  When an aqueous alcoholic solution is used and the ester is fairly soluble, precipitation can be brought about by distilling off the alcohol.
Patent GB-233373-A (GB)
Title: Improvements in or relating to the electrical thawing of carcasses of frozen meat and the like
IPC: A23B4/07
Filed: 1923-11-09
Abstract: 233,373. Alcock, A. U. Nov. 9, 1923. Restoration of preserved food.-Carcases of frozen meat and the like are thawed by the passage of alternating current therethrough in two or more paths, the current being so regulated that a predetermined safe value is not exceeded. in Fig. 5, the electrodes i are connected to the secondary windings a, b of a constant current transformer having a single primary winding c, Fig. 5. A modification employs separate constant current single phase generators. In Fig. 2, one current is derived from the secondary d of a constant current transformer c, d and another current from the secondary e<1> of a supplementary constant current transformer the primary e of which is in series with d. In the arrangement in Fig. 4, the electrodes i are connected to two separate constant current transformers, the secondaries f having a number of tappings connected to contacts g over which a contact arm h is automatically moved by a clutch gear m under the control of windings k, k<1> connected in parallel in the meat heating circuit, for the purpose of keeping the current constant. In an arrangement for thawing a forequarter of beef, a two-phase constant current generator is employed, the currents from the two phases being passed in opposite diagonal paths across the carcase. A further modification, Fig. 7, employs a transformer having a primary winding s and a secondary winding t, connected to the supply mains u, u<1> and the electrodes i, i', i<2>, as shown. Each electrode comprises a metallic member i<4> provided with a number of pointed pins i of stainless steel arranged to slide in a horse-shoe shaped holder is of insulating material, Fig. 8. The members i<4> may be connected directly by conductors i<5> or indirectly through resistances or choking coils. The electrodes 1, 3, 5 are arranged in a different plane to the electrodes 2, 4. The main supply is 220 volts of frequency 50 and the transformer is designed so that on short circuit the secondary current does not rise above 0.41 amps.
Patent GB-1358586-A (GB)
Title: Method and apparatus for digitized recording of well logs
IPC: E21B47/26
Filed: 1971-06-16
Abstract: 1358586 Processing signals in well-logging operations MAGYAR ALLAMI EOTVOS LORAND GEOFIZIKAI INTEZET 16 June 1971 [17 June 1970] 28300/71 Heading G4H Apparatus and process for the processing of signals in well-logging operations comprises a multiplexer controllable to sample a plurality of input signals in multiplex or submultiplex modes and means to control the mode of the multiplexer, this means providing a plurality of multiplex control programmes and means for selecting one of these programmes according to a predetermined order of priority and in dependence upon data received. As shown, the multiplexer 1 has a set of inputs X for receiving measured data in the form of slowly varying functions of a single variable and a set Y for receiving data in the form of rapidly varying functions, or functions of two or more variables, or functions of a statistical nature. The output of the multiplexer 13 taken to an A/D converter 2, to an arithmetic unit 3, to a data sorter 4 and then to a store 6 and read-out 7. A tester 8 is provided for generating a test programme to input B of multiplexer 1. A control unit 5 receives inputs from the other units and outputs to them so that it controls each of these units and is controlled by them. The control 5 also has an input Z which controls the start of submultiplex cycles for inputs X and an input U which controls this for inputs Y. Since the control programmes provided at 5 are selected on an ordered priority basis with recourse to the data coming over, each multiplex cycle may consist of different submultiplex cycles, each sub-multiplex cycle itself being invariant between multiplex cycles.
Patent GB-1190616-A (GB)
Title: Improvements in or relating to Protection Circuit Arrangements for Protecting High Output Radio Transmitter and like Electron Discharge Tubes.
IPC: H03F1/54
Filed: 1967-06-20
Abstract: 1,190,616. Discharge tube protection circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 20 June, 1967 [6 July, 1966], No. 28349/67. Heading H3W. In a circuit for protecting a discharge tube S against flashover, an ignitron J, thyratron or open spark gap is connected across the supply to the tube S and arranged to be triggered by a train of pulses under fault conditions. As described, the tube S is part of a high-power radio transmitter which may have a currentlimiting resistor R A  and/or a modulation transformer Sch included in the circuit between the anode and the supply smoothing capacitor C. In the event of flashover in tube S, the voltage across resistor R z  is sufficient to trigger a thyratron (not shown) which discharges a capacitor through an inductor, giving a halfcycle sine wave of duration 100 ms. The half cycle is limited by a Zener diode and used to permit oscillation of a multivibrator M which gives pulses of a duration between 25 and 100 Ás. separated by intervals of between 1 and 5 ms. for triggering the ignitron J which extinguishes the flashover in tube S.
Patent GB-254588-A (GB)
Title: A device for indirectly laying anti-aircraft guns
IPC: F41G5/08
Filed: 1925-01-05
Abstract: 254,588. Grotendorst, W. F. Jan. 5, 1925. Gunnery calculators; planetrigonometry calculators.-Apparatus for use in laying anti-aircraft guns wherein values are obtained from observations at a station distant from the gun position, comprises two pivotally mounted charts and rulers associated therewith, which can be set to represent the horizontal projection of the target, observation post, and gun, and the triangle formed by the vertical plane through the gun and target. Considering the diagram, Fig. 1, where K is the gun position, P the observation post from which the aircraft V<1> is observed, and V<2> the future position of the aircraft or meeting point of target and projectile, it is necessary to know (1) The angle D<3>. (2) the tangent elevation, #<2>, and (3) the timing of the fuze. As shown in Fig. 2, the observed angle #<1> and the horizontal distance PA are set out on one chart by the line MC and the distance MA, on the fixed line MA<2> respectively. Through A<1> a line A'E is drawn parallel to MC and equal in length to the base line PK. A line EF at rightangles to ME is then measured off to represent the height (h) of the target whereby the range KV<1> = MF and the elevation angle D<2> = angle GMH is determined. A practical form of the apparatus is shown in Fig. 4 and comprises charts 15, S, three rulers L', L<2>, L<3>, and additional rulers L<4>, L<5>. The ruler L<2> is made integral with the chart S, and the ruler L<5> is slidable along the ruler L<2> and is telescopic so as to be adjustable in accordance with the observed height of the target. The ruler L<4> has three pointers 37 - - 39; the distance between 38, 39 represents the base length, that between 37, 38 is arbitrary, and a length equal thereto is marked off along the ruler L<1> so that with the aid of the lines marked on the chart 15 the pointer L<4> can be adjusted parallel to L' with the point 38 on the fixed line MA. The ruler L<2> is provided with a longitudinally movable scale 36 and with a displaceable indicator W<1> for the purpose of making allowance for longitudinal and lateral corrections. The scale of tangent elevation may be set on an adjustable indicator W<3> on the ruler L<3>. The lateral angle of displacement between successive reading is obtained by the use of an indicator W<5> and the increase or decrease of parallax angle is shown by an indicator W<4>. The chart S is provided with data indicating (1) the angles of tangent elevation, (2) the fuze setting, and (3) the ratio between the sum of the lost time and the time of flight and the time between two measurements. In a modification shown in Fig. 7 the rulers are pivotally connected so that their movements are interdependent. The apparatus may be used with the device described in Specification 254,590 for correcting the line of fire and range.
Patent GB-627714-A (GB)
Title: Improvements in or relating to electric socket-switches
IPC: H01R13/707
Filed: 1946-09-25
Abstract: 627,714. Two-part couplings combined with switches. CONCORDIA ELECTRIC SAFETY LAMP CO., Ltd., and CORNISH, J. P. Sept. 25, 1946, No. 28634. [Class 38 (i)]  A combined socket-switch has a pivoted rotor 24 which contains socket contacts 20 and functions as the moving part of the switch. The pins 24 of a plug are inserted into the socket contacts 20 through holes 22 in the flanged socket cover-plate 4, and on turning the plug, the recessed bases of the contacts 20 engage terminal posts 21 under the pressure of a spring 6, to complete the circuit. The reduced portions 28 of the pins 24 move in arcuate slots 23 which extend from the holes 22, the slots having a width smaller than the diameter of the holes to prevent removal of the plug when the switch is " on ". The terminal posts 21 may be formed by coating non-conductive parts with metal.
Patent GB-153778-A (GB)
Title: Improvements in or relating to horns for talking machines and the like
IPC: G10K13/00
Filed: 1919-11-19
Abstract: 153,778. Frank, M. Nov. 19, 1919. Sound - wagnifying appliances.-Into the horn of a phonograph projects a resounding device 2, of the shape shown in Fig. 3. This device is connected to the sides of the case, which has resounding sides by a soundconductor 4, Fig. 1. The resounding device is thickest in the centre, as shown, in Fig. 1, and is provided with recesses 7, Fig. 3, such as the F-holes in a violin.
Patent GB-875915-A (GB)
Title: Improvements in wire-feed mechanism for stapling machines
Inventor: TURRALL GEORGE
IPC: B27F7/23
Filed: 1956-09-20
Abstract: 875,915. Stapling machines. CRABTREE & SONS Ltd., R. W. Dec. 3, 1957 [Sept. 20, 1956], No. 28821/56. Class 89(3) [Also in Group XXII] In the wire feeding mechanism of a stapling machine applicable to printing machines, the cutting of the wire for any reason, such as a choke in the wire guide, is facilitated by providing in the wire feeding mechanism a spring operated wire cutter which is held against operation by a releasable catch operable manually, or automatically in response to the condition of the wire, to free the cutter to cut the wire. In the embodiment described the wire feeding mechanism is duplicated, and the feed path of each wire includes a wire feed passage 3, Fig. 5, in a bracket 2. A cylindrical wire cutter component 1 is mounted to turn in a bore extending transversely across each wire feed passage 3, and each cutter 1 is connected to a lever 5 which is biased by a spring 6 into the position shown in Fig. 5. Each lever 5 is swingable against the bias of the spring 6 into a position, shown in Fig. 2, wherein a recess 4 in the cutter 1 is aligned with the wire feed passage 3 so that the wire passing from the passage 3 lies on the base of the recess 4. Each wire feed path is associated with a separate control plate 8 mounted on a hollow slide 9<SP>1</SP> slidable in the bracket 2 and providing a wire feed passage 3<SP>1</SP> in alignment with the passage 3, the slide 9<SP>1</SP> being spring biased in a direction away from the bracket 2. In the position shown in Fig. 2, a shaped portion on the outer end of the lever is interlocked with a flange, (Fig. 4, not shown) on the corresponding plate 8. In operation, by manually pressing the plate 8 towards the bracket 2, the lever 5 is released to allow the cutter 1 to rotate under influence of the spring 6 to cut the wire between itself and the edge of the passage 3. The feed passage 3<SP>1</SP> in the slide 9<SP>1</SP> is just large enough to allow passage of the wire but is not large enough to allow passage of a local thickening at a join in the wire, which thus operates the slide 9<SP>1</SP> and causes release of the lever 5 to operate the cutter. Each wire feed path also includes a cylindrical wire clamping component 17 having a wire receiving opening 18. The component 17 carries an operating disc 19 having a notch 20 which is engaged by a tooth 21 on a disc 22 fast with the cutter component 1. Upon release of the lever 5, the tooth 21 turns the clamping component 17 just before the wire is cut. The cut end of the wire is thus bent by the edge of the opening 18. The duplicated wire feed mechanism described may be combined with the wire feed mechanism of Specification 743,068.
Patent GB-263273-A (GB)
Title: Improvements in transporters
IPC: B66C7/00
Filed: 1925-11-16
Abstract: 263,273. MacKenzie, W. E. Nov. 16, 1925. Elevated railways; systems. - A transporter comprises an endless runway 14 with a number of load trollies A each provided with hoisting-gear connected to another trolly, the trollies moving continuously in one direction and slowing down at the loading point so that the hoisting-gear is actuated automatically by the alteration in the distance between them. The runway 14 is supported in towers 11 movable along tracks 12 and is adjustable in height. The runway track 14, of which one end is shown in Fig. 4, comprises two straight runs connected by semi-circular tracks 15. The trollies are propelled on the straight tracks by engagement with screw threads 17 of varying pitch, and on the curved tracks 15 by a rotating arm 43<a>, driven from a single motor 18. The axis of the rotating arm 43<a> is not coincident with the centre of curvature of the track, and the arm is slotted to engage a roller 38 on the trolly, which is moved more slowly as the arm approaches the position shown in Fig. 4, the roller 38 approaching the inner end of the slot. The trolly, Figs. 8 and 10, comprises a body portion 27 pivotally suspended from two bogies 25, 26. Each bogie is provided with flangeless wheels 28 running on the flats of the tracks and with three guide wheels 29, 29, 30 engaging the vertical flange of the outer rail. A carriage 34 is mounted between springs 35 on the body and is provided with wheels 36, 37 which engage the driving screw and with a wheel 38 which engages the rotary traversing arms 43a at the ends of the runway.
Patent GB-651105-A (GB)
Title: Means for attaching a metal tube to another element by casting
IPC: B22D19/04
Filed: 1948-11-08
Abstract: 651,105. Casting composite tubular articles. AVON DIECASTING CO., Ltd., and WALTERS, S. A. Nov. 8, 1948, No. 28904. [Class 83 (i)] In a method of attaching a metal tube 10 to another element, e.g. in a cycle frame, the tube is provided with holes 11 a,nd a plug 12 having a closed end and provided with slits 14 is inserted in the end thereof, and the member 15 to which the tube is to be attached is provided with holes 16 and is connected to a socket 17  which is cast around the plugged end of the tube. Various forms of plug are described. For example, it may be hollow and provided with holes so that the cast metal enters and fills the interior of the plug or it may be substantially solid and have one or more holes extending transversely through it. Alternatively, the plug may be provided with a circumferential flange at each end or have a plurality of recesses on its outer surface. In another modification, one or more projections or indentations are made at or near the end of the tube.