baber/WOPTO huggingface dataset:
Patent GB-275902-A (GB)
Title: Improvements in artificial feet
IPC: A61F2/66
Filed: 1927-04-26
Abstract: 275,902. Kaletta, A. April 26, 1927. Limbs, artificial.-An artificial foot comprises a solid rubber portion 3 constituting the foot proper and a separate shallow hollow sole 5 in the form of a pneumatic cushion secured to the sole of the portion 3, the shaft 1 of the leg being embedded in the foot portion. The walls 8 of the air cushion are reinforced by soft rubber, the middle parts 6, 7 being made thinner.
Patent GB-877602-A (GB)
Title: Improvements in or relating to casings for housing rocket-bombs suspended from an aircraft
IPC: F41F3/065
Filed: 1960-03-30
Abstract: 877,602. Aerial warfare. ROBERT, R. A., and MATGE, P. P. March 30, 1960 [April 2, 1959], No. 11168/60. Class 9(2). A casing 10 for carrying rocket-bombs 12 and suspending them from aircraft comprises a bundle of parallel guide tubes 11 and a nose 13 of breakable material e.g. polyurethane, constructed so that the release of a single rocketbomb will form only one hole in said nose, corresponding substantially to the cross-sectional area of the released bomb. The nose is formed for example by using an outer mould as suggested at 15, and the portions 16 between the tubes are formed relatively thick compared with the portions 17 covering the tubes. The nose is penetrated in each case by the pressure wave preceding the rocket-bomb.
Patent GB-560780-A (GB)
Title: Improvements in or relating to thermionic oscillation generators
IPC: H03L1/00
Filed: 1942-08-13
Abstract: 560,780. Valve generating circuits. TELEPHONE MANUFACTURING CO., Ltd., and PADDLE, L. H. Aug. 13,1942, No. 11338. [Class 40 (v)] The frequencydetermining circuit of a valve oscillator is shunted wholly or in part by one or more asymmetric or non-linear resistances, with the object of obtaining stability of frequency and wave-form. As shown, the tuned circuit 3, 4 is associated with the cathode 5 and the first two grids 6, 2 of a pentode valve 1, the grid 2 acting as anode and providing feed-back to the control grid 6. The asymmetric resistances 7 are connected across the respective sections or the whole of the dust-cored coil 3. The third grid 23 is connected to the cathode, and the anode circuit includes a resonant circuit 9 tuned to the operating frequency and transformer-coupled to the load. Bias for the control grid 6 is provided by a condensershunted resistance 27 in the cathode lead. The asymmetric resistances 7 may be single dryplate rectifiers, or pairs of such rectifiers connected in opposition, or any conductor having a non-linear relation between current and applied voltage. In a modification, a condenser is interposed between the sections of the coil 3, its upper plate being connected to high-tension positive, and its lower plate earthed through a condenser-shunted resistance, Fig. 3 (not shown). A rectifier may be interposed between the upper end of the coil 3 and the grid-anode 2 in place of the condenser 29 as in Specification 519,672. In a modification referred to in the Provisional Specification, two valves may be used, the grid of the main output valve being energized from the anode circuit of an auxiliary valve, and the frequencydetermining circuit 3, 4, 7 being situated in the grid circuit of the auxiliary valve and energized by current derived from the main valve output circuit.
Patent GB-814879-A (GB)
Title: Steroid compounds and the preparation thereof
IPC: C12P33/00
Filed: 1956-01-20
Abstract: The invention comprises a compound having the formula <FORM:0814879/IV (b)/1> wherein R is a carboxylic acid group, preferably having 1-10 carbon atoms or an hydrogen atom, and the preparation thereof by reacting D 4 - 9 - bromopregnene - 11b ,14a ,17a ,21 - tetrol-3,10-dione 21 - alkanoate with a dehydrobrominating agent and if required hydrolysing the 21-ester to obtain the free alcohol.  As dehydrobrominating agents there may be used alkali metal or alkaline earth metal salts of organic acids, e.g. potassium acetate, potassium propionate, and potassium formate, tertiary amines, and a mixture comprising an alkali metal or alkaline earth metal salt of an organic acid and an organic acid, e.g. a mixture of potassium acetate and acetic acid.  The reaction may be effected in an alkanol, e.g. ethanol.  Hydrolysis of the 21-ester may be effected with a mild alkaline agent, e.g. potassium bicarbonate, in the presence of a small amount of water. An example describes the preparation of D 4-9-bromopregnene - 11b ,14a ,17a ,21 - tetrol - 3,20-dione - 21 - acetate. Specifications 769,998, 770,000, 814,878 and 814,880 are referred to.
Patent GB-882939-A (GB)
Title: A centrifugal vibrator for oscillating machines
IPC: E02D7/18
Filed: 1960-03-31
Abstract: 882,939. Vibratory mechanism. MULLER, L. March 31, 1960 [April 25, 1959], No. 11394/60. Class 80 (4). A vibrator comprises an assembly of detach able units 1, 2, 3 having pairs of synchronously rotating unbalanced masses 1a, 1b, 2a, 2b, 3a, 3b mounted on shafts 11, 11a, 12, 12a, 13, 13a interconnected by gearwheels 1c, 1d, 2c, 2d, 3c, 3d and chains 7<SP>1</SP>,<SP> </SP>7<SP>11</SP> and driven from a motor 5 through a chain 7. The arrangement is such that the force vectors of the units are directed along the same line of action.
Patent GB-442335-A (GB)
Title: Improvements in or relating to automatic switches of the step-by-step type such as are used in automatic telephone systems
IPC: H04Q3/00
Filed: 1935-04-12
Abstract: 442,335. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Hovland, H. ; 99, Capitol Avenue, Williston Park, New York, U.S.A.) April 12, 1935, No. 11442. Convention date, June 20, 1934. [Class 40 (iv)] During the movement of a bidirectional selector in response to impulses, the stepping magnet is maintained energized over a contact controlled by the doubledog until each step is completed. In the group selector, line and release relays 15, 16 energize and impulses are repeated to vertical magnet 26 and series relay 25, which are held during each step over contact 30 controlled by the double-dog 31. The operation of off-normal contacts 28 connects up rotary stepping relay 21 and disconnects battery from the test wire 17. On the relapse of relay 25 at the end of the impulse train, rotary magnet 20 operates and interacts with relay 21 to effect rotary stepping. At each operation of magnet 20, the initial circuit of relay 21 is opened and it is connected through test relay 14 to test wiper 43. When an idle trunk is found, battery on the test terminal holds relay 21 and operates test relay 14 which locks and switches through the connection. The current received over the test terminal is insufficient to operate two test relays in parallel should two selectors engage the same trunk. Springs 24 operate if the tenth position is reached, opening the circuit of relay 21, and busy tone is applied if the corresponding trunk is in use. In the final selector, line and release relays 59, 60 energize, the latter grounding the test wire 57 to hold relay 14, and the tens and units digits are repeated to vertical and rotary magnets 64, 69, change-over being controlled by vertical series relay 64. The driving circuits are maintained as in the group selector until each step is completed over contact 70 controlled by the double-dog 71. Relay 62 energizes over test wiper 83 if the line is busy and sends back busy tone. If the line is idle, ringing and switch-through take place in the usual manner.
Patent GB-253669-A (GB)
Title: Shuttering
IPC: E04G17/02
Filed: 1925-05-02
Abstract: 253,669. Bamford, C. F. May 2, 1925. Moulding walls in situ.-Shutter boards for use in moulding concrete or like walls in situ are locked together and held in alignment by timber or iron bars i, e that are detachably engaged with horizontally and vertically arranged brackets b, a secured to the faces of the boards. The brackets, which are Z-shaped in cross-section, are arranged as shown, each hoard being provided at each end with a vertical bracket a and with an horizontal bracket b near its centre. A steel plate c fixed to the lower edge of each shutter board has a vertical projection adapted to engage in a plated recess d at the upper edge of the adjacent lower board, and also has a tongue projecting a short distance from the inner face of the board and curving upwardly. This tongue forms a temporary key in the concrete wall. Steel distanceplates g engaging over the upper edges of the boards keep them at the proper distance apart, and may serve for supporting a work platform. Shutter boards placed together at an angle to form a corner are secured by angled locking bars engaging in brackets on the boards.
Patent GB-494236-A (GB)
Title: Improvements in or relating to the manufacture of adiponitrile
Filed: 1937-04-21
Abstract: Adiponitrile is obtained by passing a gaseous mixture of ammonia and adipic acid, or a derivative thereof which will react with ammonia to form adipamide, over a dehydration catalyst at a temperature between 320-400 DEG  C. and at such a rate that the time of contact of the reactants with the catalyst is between 1 and 10 seconds, preferably 5 seconds.  For example, a stream of ammonia is passed at a measured rate through a preheater 2 at about 500 DEG  C. and into a vaporizing chamber 5 maintained at about 325-350 DEG  C.  Adipic acid, molten, powdered or in solution, is fed in through inlet 6 and evaporated by the ammonia stream.  The mixture is then swept over into the catalyst chamber 10 through a heated transfer line 8.  This chamber is maintained at 325-350 DEG  C.  The <PICT:0494236/IV/1> products are passed through cooling coil 13 and into separators 14.  The oil layers are removed through outlets 15 and distilled to obtain pure adiponitrile.  The aqueous layers are extracted to recover dissolved nitrile.  Ammonia-acid molecular ratios of 4 : 1 to 24 : 1, preferably 6 : 1 to 16 : 1, are employed.  Suitable catalysts are selected from the oxides and salts of elements of the 4th, 5th, 6th, 7th, and 8th groups, e.g. the dehydrating oxides of aluminium, silicon, tungsten, titanium, or molybdenum, preferably in the form of hard non-porous gels.  Phosphoric, phosphotungstic and phosphomolybdic acids may also be used, preferably on supports, e.g. pumice, silica gel or kieselguhr. Other catalysts or promoters may be added, and spent catalysts may be revived by treatment with oxygen-containing gases.  The preferred catalyst is silica gel.  The apparatus should preferably be made of or lined with nickel, aluminium or its alloys, stainless steel containing molybdenum or copper-silicon-manganese alloys.  A thin layer of carbonaceous material deposited on the metallic surface minimizes corrosion and adverse effects on the reaction.  Other derivatives of adipic acid which may be used include adipamide, adipimide, adipic esters, o -cyanovaleric acid, adipamic acid and o -cyanovaleramide.  Ordinary, increased or reduced pressure may be used.  Examples describe the reaction between ammonia and adipic acid or adipamide, using ammonia-acid ratios of 16 : 1 and 8 : 1 and a silica gel catalyst and contact times of 5, 3,2, and 5,9 seconds.  The product contains also cyclopentanone and tarry residue.
Patent GB-888433-A (GB)
Title: Improvements in or relating to electro-luminescent display devices
Inventor: HOFFMAN GEORGE RICHARD
IPC: H05B33/26
Filed: 1957-04-09
Abstract: 888,433. Electroluminescent screens. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 8, 1958 [April 9, 1957], No. 11565/57. Class 39(1) In an electroluminescent display device in which the phosphor layer 12, Fig. 1, is subjected to a changing electric field produced between selected conductors of two sets of conductors 11, 13 disposed on opposite sides of the phosphor layer, the remaining conductors in each set are biased to a voltage less than one half of and preferably one third of the value and of opposite polarity to that of the selected conductor in order to improve the discrimination between a wanted display point and other points where a voltage change also occurs. The voltage applied to the selected conductors may be of square or sine waveform. In Fig. 1 the conductors 11 are transparent thin film gold bars deposited on a glass plate 10. The second set of conductors 13 deposited on the top surface of the phosphor layer 12 may be opaque. In Fig. 5 both sets of conductors are opaque and only the light around the edges of the upper set of conductors is available for display. The conductors 23, 24 are thin wires held by notches in metal frames 21 the facing surfaces of which are ground flat. The frames are spaced apart by metal shim plates 25 and the whole structure is supported on a glass plate 26. The matrix of wires is encompassed by phosphor material e.g. by spraying or dipping. A circuit described for applying the appropriate exciting and biasing voltages to the conductors includes pairs of multi-point time-controlled selector switches connected across resistors of a potentiometer network. Reference has been directed by the Comptroller to Specification 746,502.
Patent GB-494244-A (GB)
Title: Improvements in traverse or building mechanism for ring spinning, and doubling and winding frames for silk and the like
IPC: D01H1/36
Filed: 1937-04-23
Abstract: 494,244. Transverse or building mechanism for ring frames, winding-frames, &c. SCRAGG, E. R., SCRAGG, T. W., and DAVENPORT, A. April 23, 1937, No. 11586. [Class 120 (ii)] In ring spinning and doubling and winding frames for silk and the like, the traverse is effected by differential cam mechanism as described in Specification 414,128, a cam 5 splined on a vertical shaft and rotated by a pinion 15 being reciprocated by cam 9 having two high points 11, 12 at different levels and two low points 13, 14 also at different levels and rotated by the pinion 15, the number of driving-teeth of the cams differing preferably by one. The Provisional Specification describes also an arrangement wherein the lower cam is mounted on a horizontal axis.
Patent GB-959856-A (GB)
Title: Overhead travelling cranes with lighting and like fittings
Inventor: LARSSON HARALD
IPC: F21V33/00
Filed: 1962-03-27
Abstract: 959,856. Rope railways. NORDSTROMS LINBANOR A.B. March 27, 1962, No. 11610/62. Heading B7L. [Also in Divisions B8 and F4] The crab 1 of a crane runs by means of wheels 2 on a cable-way comprising at least two supporting cables 3 secured between natural or artificial abutments. At intervals along the cable-way two at least of the support cables 3 are interconnected by assemblies 4, 5 which provide mounting means for electrical fittings such as lights 6 and power lines 8, 10, over which the crab 1 can pass. The crab is moved by a haulage cable attached to it at each side and passing over wheels at each abutment while the lifting hook is attached between pulleys 15, 17 to a loop of a cable attached at either end to the abutments.
Patent GB-693532-A (GB)
Title: Improvements relating to tubulous steam generating and superheating units
IPC: F22B29/04
Filed: 1951-05-18
Abstract: 693,532. Water-tube steam boilers; superheaters. BABCOCK & WILCOX, Ltd. May 18, 1951 [May 19, 1950], No. 11692/51. Classes 123 (ii) and 123 (iii) The generation of steam in a boiler is expedited, and the superheater 11, 13 thereof protected against overheating during starting up, by steam from a separate source which is introduced into the water distributing headers 3, 14 from which extend steam-generating tubes 4, 15 lining the walls of the boiler furnace. The steam flows, together with any steam generated in the boiler as result of desuperheating action or the firing of the furnace, to the boiler drum 1 and from thence successively through tubes 10, the superheater 11, an attemperator 12, the superheater 13, and a branch pipe 36 leading from the normal super, heater outlet pipe 18 to atmosphere or a condenser- Feed water may be sprayed into the attemperator 12. in which case the supply of steam to the headers 3, 14 may be reduced. Specification 447,598 is referred to.
Patent GB-852204-A (GB)
Title: Improvements in rotary regenerativ epreheaters
IPC: F28D19/04
Filed: 1957-04-10
Abstract: 852,204. Thermal regenerators. SVENSKA ROTOR MASKINER A. B. April 10, 1957 [April 12, 1956], No. 11740/57. Class 64(1) [Also in Group XXXIV] In a thermal regenerator comprising a rotor within a stationary housing having end plates located opposite the ends of the rotor and apertured to permit the passage of the heat exchanging fluids through the rotor, sealing plates confronting imperforate portions of the rotor end plates and urged towards the rotor, are maintained each individually and independently of other sealing plates, at a predetermined distance from the rotor end faces by contact with rolling elements associated with the rotor and producing rolling friction. In the form shown in Fig. 1 the sealing plates 2, 3 at opposite ends of the rotor 1, are hinged near the rotor axis and at their outer ends are provided with rollers 4, 7 which roll upon suitable annular surfaces on the rotor and are maintained in contact with these surfaces either by their own weight or by additional weights, e.g. 6, 9 or by springs. In the apparatus shown the weight of the upper plate 2 assists the effect of weight 6 which is therefore smaller than the weight 9. In modifications described the rollers may ride within an anular channel secured to the rotor shell or an annular strip extending from the rotor shell may be embraced by two rollers. Fig. 2 shows an alternative form of roller comprising balls retained in a cage 11, the ball races being hardened steel wires 12 located in recesses formed in iron rings 13, 14 one of which is secured to the rotor flange and hence rotates with the rotor and the other of which is secured to the sealing plate.
Patent GB-124997-A (GB)
Title: Improved Tank for Transporting Hydrochloric Acid or other Corrosive Liquids by Rail, Road or Water.
IPC: B61D5/00
Filed: 1918-07-18
Abstract: 124,997. British Dyes, Ltd., Turner, J., and West, J. H. July 18, 1918. Liquid-carrying vessels.-Tanks for transporting acids &c. by road, rail or water are formed of seetions lined with ebonite, vulcanite, &c., vulcanized on and all fittings liable to come into contact with the acid are similarly coated. The sections are connected by means of angle-irons d, Fig. 1, with coated surfaces, and coated baffle-plates e are provided, the joints being made tight by soft rubber washers. A man-hole cover m<1> is provided with a stirrup p to indicate the height to which the tank is to be filled, and with a cover o for an inspection opening. A pipe q for filling and emptying depends into a sump h, its lower end being supported by a casting u and a pipe v with baffles serve as a vent or for the introduction of compressed air. The baffles may consist of disks x, y, Fig. 5, with perforations x<1>, y<1>.
Patent GB-1217443-A (GB)
Title: Apparatus for evaporation by levitation in an ultra-vacuum
Inventor: AUDENHOVE JEAN VAN
IPC: H05B6/32
Filed: 1969-03-05
Abstract: 1,217,443. Vapour-deposition apparatus. EUROPEAN ATOMIC ENERGY COMMUNITY. March 5, 1969 [April 5, 1968], No.11803/69. Heading C7F. Apparatus for vapour deposition in ultravacuum comprises an ultra-vacuum chamber provided with at least one window or hatch 2, a mask 22 covering said window within the chamber and movable to uncover the window, a substrate support 3, an inductor 4 for effecting levitation and heating of the material 5 to be evaporated, a transfer device 10 operable to bring a succession of pieces of material 5 to a station beneath the inductor, the transfer device embodying upwardly removable carriers 6 for the material 5, means operable from outside the chamber for operation of the transfer device and comprising a first bar 9 passing through the chamber wall with a vacuum seal and arranged for rectilinear lengthwise movements, and raising means operable from outside the chamber by a second bar or rod 12 passing through the chamber wall with a vacuum seal and arranged for lengthwise movement, said raising means fulfilling simultaneously two functions, one to move the mask to uncover the window and the other to raise a carrier and material piece from the transfer device to position the carrier accurately on the inductor axis 11 and then to locate the material piece within the inductor. The chamber is evacuated and control bar 9 moves a holder 6 to a centred position on axis 11, and rod 12 is actuated upwards so that lug 18 coacting with helical groove 17 moves mask 22 from window 2, and so that tube 15 acts on carrier 26 to centre it accurately and lift it into the centre of induction coil 4 which is then switched on to levitate and evaporate material 5 whilst tube 15 is lowered so that the mask re-covers the window 2. While evaporation continues, crucible 29 is moved on to axis 11 to catch the globule of material 5 when coil 4 is de-energized and evaporation ended. Several materials 5 may be used.
Patent GB-184440-A (GB)
Title: Improvements in curlers for the permanent waving of the hair
IPC: A45D2/32
Filed: 1922-04-27
Abstract: 184,440. Boudou, F. Aug. 11, 1921, [Convention date]. No Patent granted (Seading fee not paid). Hair-waving.-A tube A, upon which the hair is wound, is fitted with a coned head B, slotted at C for the reception of the end of the strand of hair. The head B is clutched to the tube A, so as to prevent relative turning of these parts, bv means of a rod D and forked lever K pivoted to it at L, the fork of the lever K pressing upon a movable cap I, between which and a washer G is constrained a spring H. On turning down the lever K, the fork no longer presses on the cap 1, thus freeing the head B from the tube A for independent rotation.
Patent GB-610893-A (GB)
Title: A process for making cutting tools provided by fusion with deposits of high speed steels
IPC: B23K31/02
Filed: 1946-04-17
Abstract: 610,893. Casting composite tools; processes. SOUDURE AUTOGENE FRANCAISE. April 17, 1946, No. 11905. Convention date, June 15, 1942. [Class 83 (i)] In making a tool, for machining metals, by depositing fused high-speed steel, containing at least average tungsten content, on ordinary steel in a mould, the operation is carried out in the presence of enough carbon to ensure 1.2 to 1.5 per cent thereof in the deposit and cooling after solidification is effected quickly in air down to a temperature slightly below the point of transformation below which no structural change occurs and then cooling slowly to room temperature. The mould may be of graphite and, if the fusion is effected by an oxy-acetylene torch, the oxygen may be gradually reduced towards the end of the process to give a smoky flame which is kept in contact with the fused metal for some time. If an electric arc is used, the electrode may be coated with carbon. To accelerate the first stage of cooling, the mould may be of copper and the tool may be placed in mica, lime or the like for the second stage.
Patent GB-669621-A (GB)
Title: Improvements in or relating to metal barrels and like metal containers
IPC: B65D25/14
Filed: 1950-05-12
Abstract: 669,621. Casks. LEWIS, E. C., and ALUMASC, Ltd. May 12, 1950. No. 11908/50. Class 21. This Specification describes a metal barrel and a method of lining it substantially as described in Specification 669,594, but the claims are different. Specification 669,620 also is referred to.