baber/WOPTO huggingface dataset:
Patent GB-121460-A (GB)
Title: Apparatus and Process for the Electrolysis of Chlorides of the Alkaline Metals.
IPC: C25B9/19
Filed: 1918-11-05
Abstract: 121,460. Norsk Alkali Aktieselskabet. Dec. 13, 1917, [Convention date]. Cells; diaphragms; electrodes; electrolytes, treating non-chemically; alkalies, obtaining.-A diaphragm consists of fibrous or powdered material deposited directly from a suspension in a liquid, without an agglutinant, upon a horizontal wire netting serving as cathode and having at least 100 meshes to the sq. cm. Suitable diaphragm materials are asbestos wool, ground asbestos, and glass wool. Layers of increasing fineness may be deposited in succession. Above these may be a deposit of a fine powder such as calcined alumina, silica, iron oxide, or barium sulphate, to increase the density. Disturbance by currents of liquid may he prevented by a loose layer of long-fibre asbestos, glass wool, or the like, which also serves to prevent contamination of the diaphragm proper by anode slime. After long use, the diaphragm material may be washed to render it fit for service again. The cathode netting 3 is of highly conductive metal such as copper or silver, and is supported on the edges of flat current distributing bars 2, preferably of copper. Between the netting and the bars may be placed a coarser wire net or perforated plate. In order to check convexion currents in the ancde chamber, the electrolyte may be heated before introduction through pipes 8. Further heating may be effected by resistances 10 in series with the anodes, and the walls of the anode chamber may be covered with heat-insulating material 9, The anodes consist of horizontal or nearlyhorizontal rods 6, the bevelled ends of which rest against inclined surfaces on conductive supports. They may he of carbon, graphite, or magnetite.
Patent GB-770146-A (GB)
Title: A method of covering roofs, for example wooden roofs
IPC: E04D3/362
Filed: 1955-06-23
Abstract: 770,146. Roofs; roofing sheets SJOSTROM. A. June 23. 1955. No. 18143/55. Classes 20(4) and 87(1)  A wooden or like roof is 'covered with metal sheets 2 having corrugations 3 and ,tongues 8 welded or otherwise secured to the undersurfaces of the corrugations, adjacent a lateral edge, the first row of sheets adjacent the eaves of the roof having their tongues 8 engaging with members 7 driven into the roof and their upper edges secured by hooks 9, the tongues 8 of a second row of sheets are engaged with the upper edges of the first row of sheets. Adjacent sheets overlap at their side edges as shown in Fig. 3.
Patent GB-651464-A (GB)
Title: Improvements in or relating to voice frequency signalling receivers
IPC: H04Q1/45
Filed: 1947-07-09
Abstract: 651,464. Voice frequency receivers. STANDARD TELEPHONES & CABLES, Ltd., TERRY, V. J., HARGREAVES, T. F. S., and GOULD, W. F. July 9, 1947, No. 18161. [Class 40 (iv)] In a voice frequency receiver comprising circuits responding to two or more signal frequencies and having an aperiodic guard circuit for voice immunity purposes, compensating outputs are derived from the signalresponsive circuits to offset the rise in guard potential when more than one pure signalling frequency is being received. Transformers T1, T2 and T3, the last two of which are tuned to frequencies f1 and f2, supply the common guard circuit and the two signal responsive circuits respectively. The tuned circuits provide main outputs 2Vf1, 2Vf2 through rectifiers W2, W5 and compensating outputs Vf1, Vf2 through rectifiers W4, W3, while the guard circuit provides an opposing guard potential - (Vf1+Vf2). The main output of each tuned circuit is connected in series with the compensating output of the other tuned circuit to the grid of its respective valve V1, V2 in opposition to the guard potential, so that when both frequencies are received. the grid potentials are Vf1, Vf2 respectively, whereas if only one frequency is received the grid potential of one valve is Vf or Vf2 and that of the other zero, i.e. the output valves are working under the same conditions in each case. In a similar arrangement, Fig. 2 (not shown) the compensating output Vf2 is derived from a potentiometer across the main output. Fig. 3 shows a more complete arrangement for insertion in the receiver path of a 4-wire system as described in Specification 651,457, V1 and V2 in this embodiment being the speech amplifier and the V.F. input amplifier respectively, with negative feed-back applied in both cases by the omission of the decoupling condensers across the cathode resistors. The outputs from the valve V2 are taken via the transformers RU1, RU2 and T3 to the rectifying circuits which in this case are voltage doublers. Valves V3 and V4 are normally biassed beyond cut-off by potentials developed across P3 and P5 in the chain of resistors including the biassing windings of the relays which stretch between +130 volt and negative bus-bars. Resistor R12 across T1 enables the guard circuit voltage to build up quickly and decay slowly, thus ensuring good impulsing. Potentiometers P2 and P4 provide adjustment of the main power outputs. Specification 651,461 is referred to.
Patent GB-146318-A (GB)
Title: Improvements in and relating to vehicle suspension
IPC: F41A23/34
Filed: 1920-07-02
Abstract: 146,318. Krupp Akt.-Ges., F. Jan. 22, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Field carriages.-Relates to spring suspensions for vehicles of the type in which the road wheels are carried by spring-controlled levers pivotally mounted on the axle, and consists in means for applying this type of suspension to a vehicle with a rigid suspension, such as a gun carriage. The existing wheel axle B is provided at each end with a bearing piece C having a pair of lugs c' on which is pivoted a cranked lever D, D<2>, the wheel being mounted on a stub axle d<1> carried by this lever. The end D<2> of the lever carries a pivoted abutment d<3> through which slides a bolt c<4> secured on an abutment c<3> pivoted to an arm c<2> on the bearing-piece C, and an initially compressed helical spring F is arranged between the abutments c<3>, d<3>. The levers D, D<2> may be locked to the axle during firing by the engagement of sliding bolts G, H, carried by the axle, with recesses d<4> in the stubs d'. The bolts are operated by means of racks g', h<2> and a pinion K which is mounted on a vertical shaft projecting through the axle and rotated by means of a handle provided with a pawl for locking it in position.
Patent GB-567174-A (GB)
Title: An improved tool for use in the press bending of tubes or rods
IPC: B21D7/06
Filed: 1943-11-04
Abstract: 567,174. Angular bending. BLACKBURN AIRCRAFT, Ltd., and GREENWOOD, G. Nov. 4, 1943, No. 18283. [Class 83 (iv)] Dies and formers.-A tool for press bending tubes and rods comprises an upstanding main part with a forwardly extending or increased thickness portion at the top through which is slidably driven by the press ram at least one thrust or bending member which co-operates with a former positioned on the front of the main part, the tube &c. being clamped to the former at the point of maximum curvature. The main part 1, which rests on feet 2, 3, is provided with thickened portions 4, 5, channelled to guide bending members 6, 7 which are forced down against the action of springs by the press ram to co-operate with a former 8 secured to the front of the part 1. The tube &c. is clamped to the former by a wedge 9 preferably through a slide 11 and is prevented from wrinkling at the bend by a projecting plate 18. The wedge which passes through a slot in the part 1 may be so shaped that as the tube &c. is being bent it may be further knocked home to increase the area of contact with the tube. At least one end of the tube &c. is placed on a projection on a rotating support 12, which acts through a slot in the part 1 and is loaded by a tension spring 13 into its operative position limited by a projection engaging the back of the part 1. As the tube &c. is bent by movement of the members 6, 7, the part 12 rotates until the tube passes beyond the projection when it springs back to initial position. The former is provided with spring-loaded pads 14 which are depressed by the tube &c. during bending and after retraction of the bending members automatically lift to assist separation of the tube &c. from the former. The part 1 may be made of wood, the former of compressed fabric, the members 6 and 7 faced with wear-resisting material and the part 12 of wood or compressed fibre. The former and members 6, 7 are detachable to suit tubes of different diameters or bends of different shapes and to obtain different lengths of stroke.
Patent GB-753177-A (GB)
Title: Improvements in contractable umbrellas
IPC: A45B19/06
Filed: 1954-06-22
Abstract: 753,177. Telescopic umbrellas. HAUPT, H. June 22, 1954 [June 25, 1953], No. 18325/54. Class 134. A telescopic umbrella comprises a stick having three telescopic parts 1, 2 and 3. Part 1 carries the crown 4 and a spring catch 5 which engages an auxiliary slide 6 when the umbrella is open. Part 3 carries the handle 7 and a spring catch 8 which engages the auxiliary slide 6 when the umbrella is closed. Each rib consists of three telescopic parts 10, 11 and 12, the inner end of the outer part 12 being connected to a guide stirrup 14 which is sufficiently large to slide over the inner rib part 10 and is provided with an eye 15 to which the umbrella cover 16 is attached. A main stretcher, comprising an outer part 18 connected by means of a pivot 19 to an inner part 20, is connected between a pivot 13 on the guide stirrup 14 and a pivot 21 on a main slide 22. An inner auxiliary stretcher 24 carried by the auxiliary slide 6 is connected by means of a pivot 23 to the inner part 20 of the main stretcher and has a preferably fork-like portion 9 extending beyond the pivot 23. An outer auxiliary stretcher 26 is connected between a pivot 25 on the portion 9 of the inner auxiliary stretcher 24 and a pivot 29 on the outer part 18 of the main stretcher. The stretcher system forms a lazy tongs framework and the pivot 29 is arranged so close to the pivot 19 that upon alteration in the distance between the main and auxiliary slides 22 and 6 the angular movement of the inner and outer main stretcher parts 20 and 18 relative to one another is greater than the angular movement of the inner main stretcher part 20 relative to the inner auxiliary stretcher 24. The maximum angular movement of the parts 20 and 18 relative to one another is approximately 180 degrees and is limited by the provision on the part 18 of an extension 30 which abuts against the part 20. When the umbrella is open the main slide 22 abuts against the crown 4 and the stretcher 18, 20 forms an approximate chord of the bent rib. In the closed position (indicated in dotted lines) the outer stretcher part 18 is swung in the direction of the umbrella stick and the ribs are then telescoped by telescoping the stick parts and moving the stretcher system towards the umbrella crown 4.
Patent GB-661813-A (GB)
Title: Improvements relating to liquid spring shock absorbers
IPC: F16F5/00
Filed: 1949-07-12
Abstract: 661,813. Liquid-spring shock-absorbers. DOWTY EQUIPMENT, Ltd., and FARR, P. July 12, 1950 [July 12, 1949], No. 18407/49. Class 108(iii) A liquid-spring type shock-absorber has two intercommu nicating chambers for the liquid, and plunger means adapted to operate in such manner that the liquid in both chambers is compressed during the first stage of a compression stroke, whereupon the chambers become sealed from one another and the liquid in one chamber only is further compressed during the second stage of the stroke. In the construction shown in Fig. 1, a cylinder 11 is divided into two chambers 17, 18 by a gland 16. The plunger rod 13 has an inner section 13a of smaller diameter which passes with clearance through the gland 16. On compression, liquid in both chambers 17, 18 is compressed until the larger diameter piston section enters the gland 16, when liquid in the chamber 17 ceases to be compressed any further. In a modification, the plunger rod may be of constant crosssection. communication between the chambers 17, 18 being provided by a passage in the piston rod until one end of the passage passes through the gland 16, According to the Provisional Specification. the aperture in the gland 16 may be bell-mouthed. In the construction shown in Fig. 2, a plunger 24 movable through the gland 28 of a main cylinder 22, carries a cylinder 23 at its inner end Mounted within a gland 25 at the end of the cylinder 23 is a hollow plunger 26, A ball-valve 27 is contained in a housing 29 having limited axial movement relative to the plunger. On the first stage of the compression stroke, the chambers 20, 21 formed by the main and plunger cylinders. are in communication through the interior of the plunger 26, and the whole of the liquid in the two chambers is under compression. When the head 29 engages the end 30 of the cylinder 22, the ball valve 27 is forced against its seating and the plunger 26 is projected into the chamber 21. The diameters of the plungers 24 and 26 are equal and thus compression in chamber 21 proceeds while compression in chamber 20 ceases (since the volume of plunger 24 entering chamber 20 is eaualled by the volume of plunger 26 passing from chamber 20 to chamber 21). In a modification of the construction in Fig. 2, the plunger 26 is solid. and it is driven into the chamber 21 on the first stage of the compression stroke by differential pressures in the chambers 20, 21 acting on the projected areas of the plunger to maintain pressure in the chambers 20. 21 constant. The invention is applicable to the liquid spring shock absorbers described in Specifications 560,047 and 560.048.
Patent GB-796250-A (GB)
Title: Improvements in and relating to harrows
IPC: A01B21/08
Filed: 1956-06-14
Abstract: 796,250. Agricultural implements. OKSANEN, A. H. June 14, 1956 [April 25, 1956], No. 18447/56. Class 6(1). A harrow comprises a frame 1 on the front of which is mounted a disc harrow (not shown) and a spring tine harrow 8. The harrow 8 is removable and may be replaced by other forms of harrow such as a toothed harrow. As shown a smoothing beam 2 is provided at the front of the frame and an adjustable beam 3 at the rear of the frame. The spring tines 8 are mounted on axles mounted in bearings on brackets 7 fixed to the frame 1 and supported by a longitudinal beam 9. Connecting rods 13 are attached to the axles 6 and are joined by a member 14. The rear rod 13 is extended to form an adjusting handle for rotating the axles 6 and varying the inclination of the tines 8 and is held in position by a supporting bar 15 provided with a number of holes 16 one of which is engaged by a pin 17.
Patent GB-1341058-A (GB)
Title: Polyether amines their production and use
IPC: C08G81/00
Filed: 1971-06-01
Abstract: 1341058 Flocculating SANDOZ Ltd 1 June 1971 [5 June 1970] 18480/71 Heading C1C [Also in Divisions C2 C3 and D2]  Flocculating and flotation agents for use in effluent treatment comprise water-soluble, high molecular cross-linked polyether amines and salts thereof prepared by reacting an excess of an aliphatic polyamine of MW not exceeding 200 and containing at least one primary or at least two secondary amino-groups with a polyepihalogenhydrin containing 3 to 25 halogenomethyl groups, distilling off excess polyamine, treating with a cross-linking agent in aqueous solution to a degree at which a viscosity increase occurs, but with retention of watersolubility, and if desired partly or completely converting any free amino group present into the corresponding salt form by the addition of an acid.
Patent GB-729390-A (GB)
Title: Hair dyeing and bleaching device
IPC: A45D7/04
Filed: 1953-07-03
Abstract: <PICT:0729390/IV (c)/1> <PICT:0729390/IV (c)/2> A device for the liquid treatment in situ of a strand of hair extending from the scalp comprises an open-ended tube having a cap of resilient material through an aperture in which the strand of hair is drawn into the tube by a hook the hook then being withdrawn and the tube closed and filled with the treatment liquid.  Figs. 1 and 3 show a hair treating appliance in which a strand of hair 21 extending from a scalp 20 is engaged by a hooked needle 19 which projects through an aperture in a soft rubber cap 16 which encloses the top of a tube 15.  The needle and hair is drawn downwards into the tube 15 and the tube 15 is moved upwards relative to the hair until the rubber cap 16 touches the scalp; the ends of the strands of hair are then pushed by means of the hooked needle into the tube 15 and a quantity of hair dye or bleach solution is introduced into the tube, for example, by means of an eye dripper, and the lower end of the tube is closed by a cap 17. The progress of the treatment may be watched through the transparent sides of the tube 15.  When the aperture through which the needle 19 is passed is formed by intersecting slits 18, as shown in Fig. 1, the slits automatically close after removal of the needle due to the resilience of the rubber from which cap 16 is made.
Patent GB-1240481-A (GB)
Title: Electric high tension sources
Inventor: BANKS CECIL HENRY
IPC: H05C1/04
Filed: 1968-04-19
Abstract: 1,240,481. Semi-conductor pulse generators. WOLSELEY ENG. Ltd. 21 April, 1969 [19 April, 1968], No. 18497/68. Heading H3T. A pulse generator comprising an input transformer L, F, S which provides an A.C. signal for charging a capacitor C1 via a diode D1, and a discharge path for the capacitor through a breakdown device TH and a further transformer, is characterized in that the breakdown device TH is triggered by a further breakdown device D3 which is controlled by a voltage which is a known fraction of the voltage across the capacitor C1 The breakdown device TH is preferably a thyristor, but may be an avalanche diode triggered via a further transformer. The other breakdown device D3 may be an avalanche diode, a PNPN diode or a neon. The A.C. input signal is provided by connecting the transformer windings L, F to a transistor T to constitute a blocking oscillator. The triggering voltage for diode D3 is provided by a further rectifier circuit D2, C2 connected to a tapping on winding L. A voltage doubler circuit may provide the supply to capacitor C1.
Patent GB-697174-A (GB)
Title: Improvements in or relating to the purification of fuel gases
IPC: C10K1/12
Filed: 1950-07-25
Abstract: 697,174. Gas-purifying processes. HOLMES & CO., Ltd., W. C., CHADDERTON, E., and COOPER, C. July 25. 1951 [July 25, 1950] No. 18519/50. Class 55(ii) Hot ammonia liquor condensate obtained in the purification of fuel gases is cooled by passage down a cooling tower in counter-current to a ascending air stream, the cooled condensate being employed for washing ammonia from the gases and the air and ammonia from the tower being fed to the oxide purifiers. Gas from retorts 10 is sprayed with condensate in a collector 11 whence it passes to a cooler 15. Condensate from the collector 11 and cooler is delivered through tar separators 17, 18 to a vessel 19 feeding the collector sprays 12 and to storage through a pipe 25. A further amount of condensate from separator 17 is sprayed down a packed cooling tower 27 up which air is blown, and this air is then led either to the entrance or to an intermediate stage of a gas washer 32 or to the main 34 from the washer leading to an oxide purifier 37. The cooled liquor is led to washer 32 and thence to storage. In the purification of water gas or other gases not containing ammonia liquor from coal gas treatment may be stripped in the cooling tower so that the .air furnished to the purification plant may contain ammonia for maintaining the proper alkalinity therein.
Patent GB-284040-A (GB)
Title: Improvements in the production of iron from iron ores
IPC: C21B13/14
Filed: 1926-07-26
Abstract: 284,040. Hornsey, J. W., and Coley, H. E. July 26, 1926. Extracting.-In a process for the reduction of iron ores or oxides, the ores &c. are preheated in an inclined rotary chamber and the preheated ores &c. are passed without access of air into a second inclined rotary chamber from which air is practically completely excluded, where they are mixed with carbonaceous material containing hydrocarbons, this chamber being heated to such a temperature that the hydrocarbons are cracked and: the products reduce the ores &c. to practically pure iron. This iron is then passed without access of air to a third chamber in which it is cooled before exposure to the atmosphere. The reducing temperature, viz. 850-1100‹ C., is produced in the reducing chamber by the combustion of finely divided fuel with just sufficient air to cause the combustion of the fuel, and a pressure above or below atmospheric pressure is maintained in the chambers. The carbonaceous material, which may be coal, peat, or lignite, may be introduced into the reducing chamber at the point at which the heated ores &c. are at or near the requisite temperature for reduction. Reference has been directed by the Comptroller to Specifications 11224/14 and 215,400.
Patent GB-769899-A (GB)
Title: A device for the conversion of an electrical magnitude into a corresponding mechanical movement of translation
IPC: H01F7/06
Filed: 1955-06-28
Abstract: 769,899. Electromagnets. CONTRAVES AKT.-GES. June 28, 1955 [July 19, 1954], No. 18631/55. Class 35. An electromagnet for operating a piston valve 56 consists of a coil 25 moving axially in an annular air-gap 17<SP>1</SP>, an oppositely moving compensating mass 45 giving balance for axial accelerations. The coil is mounted on a carrier tube 35 which is supported on disc springs 21, 31 and passes through an axial hole in the energizing magnet 16. The piston valve 56 is operated by a push-rod 54 passing through the tube and engaging a plug 49 at its end. The ring-shaped balance weight 45 is carried on four levers 40, 41 which are secured through flexible springs to the carrier and weight at either end, and are centrally pivoted on a further series of flexible springs 39. The coil is restored by a spring 50.
Patent GB-636492-A (GB)
Title: Improvements in or relating to dielectric heating
IPC: H05B6/48
Filed: 1947-07-14
Abstract: 636,492. Di-electric heating. ARMSTRONG CORK CO. July 14, 1947, No. 18646. Convention date, Jan. 24. [Class 39 (iii)] A mass of di-electric material is contained between two flat plate electrodes and is closely surrounded by a voltage divider coil, and is heated by the application of high frequency current to the electrodes and coil. In one embodiment, material 10, e.g. cork particles coated with a heat activatable binder, is confined in a mould 14 and between electrodes 11 and 12 which are held in position by pins 15. A voltage divider coil 16 surrounds, or is embedded in the mould wall and is connected to the electrode plates. The spacing of the coil turns may be varied along its length to produce a required heating throughout the mass. The electrodes are electro-magnetically shielded from the coil 16 by copper bands 19. Alternatively the electrodes are disposed on opposing platens of a press. Specifications 517,798 and 605,589 are referred to.
Patent GB-147004-A (GB)
Title: Improved process for obtaining dried egg constituents
IPC: A23B5/025
Filed: 1920-07-06
Abstract: 147,004. Ebers, K. Jan. 9, 1918, [Convention date]. Preserving eggs.-White or yolk of eggs which has been mixed with a preservative such as salt, benzoic acid, boric acid, &c. is treated to separate the preservative by dialysis and is dried by atomizing into a current of dry air which may be heated. Sparingly soluble preservatives such as benzoic or boric acids may be neutralized by addition of alkali such as sodium bicarbonate to yield salts which are readily separated my dialysis.