baber/WOPTO huggingface dataset:
Patent GB-718400-A (GB)
Title: Improvements in and relating to ventilator grills for attachment to air supply conduits
IPC: F24F13/15
Filed: 1952-05-05
Abstract: 718,400. Louvre ventilators. STIRLING, R. B. May 4, 1953 [May 5, 1952], No. 11282/52. Class 137 A ventilator grill comprises a metal frame 1 having a flange 2 for attachment to an air delivery conduit and two sets of completely revolvable louvres 3, 4, the outer set 3 being iotatably mounted by pivot pins 5 in the frame 1 and secured by nuts 6 and washers 7 to hold them in their individually adjusted positions, and the inner set 4 arranged at right angles to the outer set 3, being carried by spindles 8 supported in the frame 1. The laths 4, each provided at one end of their spindle 8 with an arm 10, are arranged in two groups, the arms 10 in one group being interconnected by a rod 11 at one side of the frame 1 and the arms 10 in the other group being interconnected by a rod 12 at the other side of the frame 1. One spindle in each group carries, at its end remote from the arm 10, a worm wheel 13 which meshes with a worm 14 on a vertical spindle 15 mounted in bearings carried by the frame 1 and having its upper end squared as at 16 so that all of the louvres in one particular group can be simultaneously adjusted by a key. In alternative arrangements the set of individually adjustable blades may be omitted, or the ventilators may be provided with an outer series of interconnected louvres parallel, or at an angle to, the inner set of louvres. In a further modification all of the louvres are interconnected to operate together.
Patent GB-581043-A (GB)
Title: Improved heat transfer systems
IPC: F25D11/02
Filed: 1944-06-14
Abstract: 581,043. Closed heat transfer systems. CONSTANTINE, W. W. (General Motors Corporation). June 14, 1944, No. 11348. [Class 29] In a closed heat transfer system a volatile liquid is evaporated at one level and freely descends as vapour to a lower level where it is condensed and whence it is transferred to the evaporation level by capillary action. A vertical sealed tube 28 opening into a horizontal tube 30 partially filled with the volatile liquid 34 contains a capillary structure 36 in the form of a continuous mass of sintered metallic powder the lower end of which contacts the volatile liquid under all conditions. A passage 38 is left throughout the tube 28 and the tube 30 is placed in a cooling medium, e.g., broken ice or in contact with the evaporator of a refrigerating machine while the tube 28 extends into or around the compartment to be cooled. The liquid rises in the capillary structure and evaporates in the upper part of the tube 28, the vapour passing down the passage 38 to be condensed upon the walls of the tube 30 which may be provided with a fin 32. Figs. 4 and 5 show modified passages 58, 78 in the tube 28. The tube is exhausted and the capillary mass may comprise iron powder mixed with ferro-phosphorus powder and sintered in the tube, a spacer being used to form the passage 38. Liquids used are ammonia, water, and ethyl and methyl alcohol.
Patent GB-739286-A (GB)
Title: Improvements in or relating to fuel oil
IPC: C10L1/00
Filed: 1953-04-24
Abstract: Fuel oils boiling above about 325 DEG  F., particularly diesel fuels, are heated with a Group II metal, such as metallic zinc or magnesium, at a temperature within the range 70-470 DEG  F., thereby producing fuel oils with little tendency to form deposits when used in compressionignition engines, gas turbines or boiler furnaces.  Fuel oils mentioned are those derived by straight distillation of crude petroleum oil or by thermal or catalytic cracking of petroleum oil fractions.  The fuel oils should preferably contain about 0.1-2 per cent of sulphur in the form of compounds which are neutral or unreactive with bases.  Thus, the fuel oils may contain organic disulphides, but hydrogen sulphide and mercaptans are preferably removed by prior treatment.  It is thought that the Group II metal reacts with the sulphur compounds and possibly also with ash-forming constituents of the fuel oil. Additional materials may be added to the treated fuel oils, such as rust inhibitors, anti-oxidants, demulsifiers, ignition promoters, metal deactivators, cloud point or pour point depressors, oiliness agents, detergents, sludge dispersers and neutralizers of vanadic corrosion.  Apparatus is described in which a crude petroleum of low sulphur content and a crude petroleum of high sulphur content are separately distilled to yield constituents lighter than gasoline, gasoline, diesel fuel (boiling range 350-700 DEG  F.) and residuum fraction, and the diesel fuels thus obtained are separately refined with sulphuric acid and then with caustic soda.  The refined diesel fuels are then blended and heated with metallic zinc in the form of powder, slurry or turnings. A process is also described in which a fuel oil boiling above 325 DEG F. and having a sulphur content of at least 0.1 per cent is contacted with metallic zinc at 120-320 DEG  F. and then blended with a diesel fuel of lower sulphur content to produce a blend containing 0.005-0.5 per cent zinc by weight.  For comparison purposes, the treatment of fuel oils with iron or copper is described.
Patent GB-113765-A (GB)
IPC: H01H1/52
Abstract: 113,765. Willcocks, J. C. Oct. 30, 1917 Switches; locking and unlocking.-Relates to knife switches of the type referred to in Specification 2594/11 in which, in the closed position, the switch is locked to prevent it opening automatically on heavy overload. According to the invention, a catch or tilting-piece f is pivoted at e to the knife blade and is formed with a hook f<1> directly engaging the upturned end of a detaining spring plate p secured in the fork of the fixed contact clip d. The tilting-piece is spring-pressed, as shown, by a spring e<1> and the operating member engages the hole g and tilts the member f out of engagement with the detaining plate p before rocking the switch blade about its pivot b<1>. The application to a double-throw switch is described in which the tilting piece which is adapted to tilt forwards and backwards is formed with two hooks one at each side of the switch blade and is normally held in a central position by a double form of the spring e. The tilting piece may be located between the pivot b<1> and the fixed contacts.
Patent GB-1482046-A (GB)
Title: Electrophotographic printing machine
IPC: G03G15/00
Filed: 1975-03-19
Abstract: 1482046 Liquid crystal platen XEROX CORP 19 March 1975 [29 March 1974] 11396/75 Heading G2A An electro-photographic copier has a platen comprising a liquid crystal imaging cell 24, selected portions of which may be electrically excited and thereby rendered opaque. Selected portions of an original may be thereby masked or the platen itself used as an original. In the successive registered transfer of colour images to produce a multicoloured image, one or more of the images may be masked. Cell 24 may comprise transparent plates 90 and 88 having transparent conductive coatings in the form of respective strips 92a and 92b forming an electrode grid 92, a layer of liquid crystalline material 94 being situated between platen 90 and 88. Cell 24 may rest on a resilient gasket 92, (Fig. 2 not shown) and be connected to a computer 26, Fig. 1 (not shown).
Patent GB-753166-A (GB)
Title: Improvements in or relating to substituted piperazines
IPC: C07D295/033
Filed: 1954-04-20
Abstract: The invention comprises 1-alkyl-4-phenyl-piperazines where the alkyl group has 5-9 carbon atoms, and acid addition salts thereof.  These may be prepared by (1) alkylating N-phenyl-piperazine; (2) reacting N-alkyl-di-ethanolamines with aniline; or (3) reacting N-phenyl-diethanolamine with primary alkyl-amines of 5-9 carbon atoms.  The products are isolated as hydrochloride or sulphate salts. N-Phenyl-piperazine can be obtained from aniline and diethanolamine or by other methods described in the literature.  In the examples: (1) 1 - (3:3 - dimethylpentyl) - 4 - phenylpiperazine is made from N-phenyl-piperazine and 1-chloro - 3:3 - dimethylpentane; (2) 1 - (3:3 - dimethylbutyl) - 4 - phenylpiperazine is prepared from N-phenyl-piperazine and 1-chloro-3:3-dimethylbutane; (3) 1-(3:5:5-trimethyl-hexyl) - 4 - phenylpiperazine is obtained from N-phenylpiperazine and 3:5:5-trimethylhexyl toluene - p - sulphonate; (4) 1-(2-ethylbutyl)-4-phenylpiperazine is made by catalytic hydrogenation of a mixture of N-phenylpiperazine and 2 - ethyl - butyraldehyde; (5) 1 - (3:4:4 - trimethylpentyl) - 4 - phenylpiperazine is obtained similarly from b :g :g -trimethyl-valeraldehyde.  The toluene-p-sulphonic ester of 3:5:5-trimethyl-hexanol is prepared from the alcohol and toluene-p-sulphonyl chloride.
Patent GB-1547230-A (GB)
Title: Draughting machine
IPC: A47B27/14
Filed: 1976-03-22
Abstract: The weight of the drawing board and all of the parts connected thereto is held in equilibrium by a pneumatic spring (1, 2) arranged between the drawing board and the stand. Furthermore, there is a self-locking brake (3) which can be fixed by a tie rod (6) and can be released by spring force. When there is inadequate gas counter-pressure, or no pressure at all, in the pneumatic spring (1, 2), said spring (4) is connected to the brake (3) such that it can be released or relieved. The resulting self-locking function of the brake (3) prevents the drawing board from lowering. <IMAGE>
Patent GB-290811-A (GB)
Title: Improvements in step by step regulators
IPC: G05D16/18
Filed: 1927-04-29
Abstract: 290,811. Stanley, A. H., (Ruggles-Klingemann Manufacturing Co.). April 29, 1927. Governing and regulating pumps.-In apparatus for automatically regulating fluid pressure a spring-loaded diaphragm 6 actuates one member of an electric switch 11 which sets in action an electric motor 1 arranged to move a speedchanging arm 32 for a motor 26 serving in this particular example to drive a pump 27. The transmission from the motor 1 passes through a Geneva stop gear so as to give intermittent motion, in either direction as may be required, to the arm 32 with pauses at definite points. After each step a stepped spiral cam 36 acts on the end of a lever 17 whereby the switch is opened in the known follow-up manner. In order that the angular movement required to actuate the lever 17 may be the same whether the stepped cam spindle moves forwards or backwards, a lost-motion device 46 is interposed between the spindle and the cam. the amount of lost motion being adjusted so as to compensate exactly for the free play from end to end of one step of the cam.
Patent GB-802051-A (GB)
Title: Improvements in or relating to spring units for seats and the like
IPC: A47C27/06
Filed: 1956-04-16
Abstract: 802,051. Spring upholstery. BAMFORD SPRING INTERIORS Ltd., AVISON, M., and YOUNG, C. Feb. 14, 1957 [April 16, 1956], No. 11540/56. Class 52(4) A spring unit for a seat or the like comprises a wire mesh 12 forming a rectangular panel which is secured along its sides to flexible helically twisted wires 13, the ends of which are secured to helical or helical spiral springs 11 mounted at the corners of a rigid frame 10, the springs having their axes substantially normal to the plane of the mesh panel 12. Preferably, additional helical springs 11 are provided to support the mesh 12 from beneath and along its sides.
Patent GB-688741-A (GB)
Title: Improvements in or relating to dental amalgams
IPC: A61K6/847
Filed: 1951-05-17
Abstract: A process of preparing a dental amalgam comprises forming a compact containing metal powder of different particle size, the powder being prepared from a dental alloy containing 60-75 per cent of Ag, powdering the compact under a slight pressure to produce a powder of different particle size and mixing the powder with mercury.  The compact may consist of coarser particles passing a sieve having 1,600 meshes per square centimeter and a third of the total weight consists of particles whose individual weight is about one-fiftieth of that of the coarser particles. The compact is preferably in tablet form and mercury may be added to the powder by a measuring dispensing device. The metal may consist of Ag and Sn with or without copper or zinc.
Patent GB-1037365-A (GB)
Title: Improvements in combination filter blower
IPC: F04D17/16
Filed: 1965-03-19
Abstract: An annular filter element 16, Fig. 2 (not shown), is disposed within a blower impeller and supported by the impeller blades 15 for rotation with the impeller.  The number of blades is greater than would be the case if the impeller were not provided with a filter element, it being found that the air flow is thereby increased.  For an impeller having a diameter between 4 and 16 inches, the number of blades may be between 100 and 320 and preferably is between 130 and 220.  The radial depth of the blades and the thickness of the filter element increase with the impeller diameter.  The filter element which may comprise fibres of polyester or acrylic plastics, paper, cloth, glass, nylon or steel wool or may be of polyurethane foam, reduces the noise of the blower.  Preferably, the blades 15 are forwardly inclined at 35 to 55 degrees, and the blades may be divided into sections separated by circumferentially extending bands 22.  The impeller comprises a back plate 17 and a front flange 20.
Patent GB-1034331-A (GB)
Title: Improvements in and relating to roof lights and the like
Inventor: DAVIES VICTOR WILLIAM
IPC: E04D13/03
Filed: 1961-03-30
Abstract: 1,034,331. Ventilators. RUBEROID CO. Ltd. June 29, 1962 [March 30, 1961], No. 11660/61. Heading F4V. [Also in Division E1] A ventilator 17 is supported above a meta<SP>1</SP> roof by channel-sectioned framing members 2 which may be reinforced by angle-sectioned members 6, and which carry a rectangular framework between them. The framework stands proud of the framing members, and has a sloping top. Intermediate roofing members 14 are supported on a flange 8 extending out from the framework, which is either integral with, or firmly attached to the framing members along the length of two of its sides.
Patent GB-296460-A (GB)
Title: Improvements in cooking apparatus
IPC: A21B1/10
Filed: 1927-05-03
Abstract: 296,460. Morgan, F. J. May 3, 1927. Resistance ovens.-The baking spaces 2 of an oven are jacketed by oil tanks 17 connected by circulating tubes 19. Electric heaters are immersed in the tanks 17 and thermometers 16 are provided. The valve 15 permits drainage to the storage tank which has an open ended overflow pipe 14 connected to an expansion chamber 10.
Patent GB-559489-A (GB)
Title: Improvements in concrete building structures
IPC: E04B1/21
Filed: 1942-08-21
Abstract: 559,489. Walls; beams. ORLIT, Ltd., and KORBEL, J. Aug. 21, 1942, No. 11800. [Class 20 (iv)] The ends of concrete roof beams 12 and eave beams 21 supported on concrete pillars 11, and the inner sides of facing blocks 22 at the top of the pillars are formed with vertical recesses 23 which receive grouting material forming tenon- like joints between the beams. Reinforcements 24 overlap the recesses and are bonded together by the grouting superposed concrete slabs 14 forming inner and outer walls are held between grooves in the sides of the pillars. Specification 432,916 is referred to.
Patent GB-684342-A (GB)
Title: Safety locking devices
IPC: E05B37/02
Filed: 1950-05-12
Abstract: 684,342. Permutation locks. SCAVRAN, A. May 12, 1950 [May 16, 1949], No. 11922/50. Class 44 In a permutation lock of the kind having a number of locking rings each associated with an indicia carrying ring to which it is normally locked, means are provided to release the locking rings from the indicia carrying rings, each ring having parts exposed to the exterior of the lock to enable the combination to be changed, on operation of the release means, without dismantling the lock. In one form, the lock comprises a shaft or bolt 11, Fig. 1, slidably mounted in a U-shaped frame 1 and locked against movement by rotatable locking rings, coacting with teeth 12, Fig. 22, on the shaft. Mounted on the shaft 11 between the arms of the frame are indicia carrying rings, the end one of which, shown in Fig. 6, has an annular slot 23 to receive a spring 42, Fig. 2, and a recess 24. to receive the end tooth of the shaft when in unlocked position. The other rings, shown in Fig. 4, have radial slots to pass the teeth of the shaft when aligned therewith, and balls 16 which make contact with the adjacent ring. On each ring is carried a locking ring 25, Figs. 8, 9. The bottom 26 of each locking ring has a central bore fitting shaft 11, and a slot 28 to pass the tooth on the shaft. The exterior of the ring has axial grooves 29, which are engaged by spring-pressed plungers 39, Fig. 2, housed in boxes in the frame, and openings 30 (Fig. 8), through which are visible the letters or numbers on the associated indicia ring. Teeth'31 project from each ring 25 to engage between similar teeth 15 on the associated indicia ring. Mounted in one arm of the frame 1, Fig. 2, is a spring pressed plunger 37 bearing against the end ring, this plunger being normally locked by a rotatable safety catch 33 in the form of a cylinder with grooves 34, 35, Fig. 19, so arranged that in one position it locks the plunger 37 but permits free movement of the shaft 11, and in the other position it frees the plunger, but holds the shaft 11 in the unlocked position, and that when shaft 11 is in the locked position the catch 33 cannot be moved. The number of teeth on shaft 11 is one more than the number of locking rings; the first tooth, on the left in Fig. 2, slides in a slot 4 in the bore in the frame to prevent rotation of the shaft, which is moved to the left as shown in Fig. 2 to unlock. In this position the second tooth is received in a recess in the housing, and the other teeth are located in the recesses 24 in the indicia rings. To change the combination, the safety catch 33 is rotated by means of its attached lever 32 to the position in which it holds the shaft 11 stationary and releases plunger 37. This allows the locking rings to be disengaged from their associated indicia rings by compressing the spring 42, so that the combination can be reset. The application of this mechanism to various forms of locks and padlocks is described and illustrated.
Patent GB-311915-A (GB)
Title: Electric switch lamp holders and the like
IPC: H01R33/955
Filed: 1928-04-24
Abstract: 311,915. Nettl, R. April 24, 1928. Holders.-A switch lampholder having a body of insulating material comprises a body N made hollow to accommodate a switch operated by a push-bar P, a terminal block D<2> formed as a lid for the body N, and a partition E extending upwards from the block D<2> to separate the terminals T and to cooperate with a central aperture H in the cap C to form a cord-grip, the block D<2> being secured to the body N by means of the terminals T which are screwed into internal conductors A, B. One of the bottom contact plungers T<4> is also screwed into the conductor A, and the conductor B is fixed by a screw 2 in the body N to support the switch blades B<1>. The main part of the switch is held by the second contact plunger T<3>. The socket K to receive the lamp bulb is either moulded integrally with the body N or comprises a metal sleeve moulded into it. Specifications 282,144 and 283,696 are referred to in the Provisional Specification as describing other forms of terminals and cordgrips.
Patent GB-386500-A (GB)
Title: Improvements in or relating to thermionic and like amplifiers
IPC: H03F1/06
Filed: 1932-04-26
Abstract: 386,500. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Hansell, C. W.; Port Jefferson, Long Island, New York, U.S.A.) April 26, 1932, No. 11992. Convention date, May 21, 1931. [Class 40 (v).] In an amplifier having a drooping characteristic an auxiliary valve is arranged to supply additional energy to the amplifier so as to straighten the characteristic. Fig. 3 shows an amplifier 54 to be corrected fed from an H.F. source 30 and modulated from a source 36. The compensating valve 34 has the screening grid biased through potentiometer 52 so that it is inoperative until modulation occurs when its output is added to that of the valve 32 to correct for distortion in 'the amplifier 54. In a modification, Fig. 2 (not shown), the amplifying and compensating valve are in parallel and correction is obtained by using a larger grid bias,and applying a larger signal to the' compensating valve. The two valves in parallel or in push-pull may be of differing characteristics obtained by using differing grid meshes or electrode spacings instead of being differently polarized. Neutralized or screengrid valves are used to avoid the effects of inter-electrode feed-back and screen-grid valves have the additional advantage that plate potential variations . have less effect on the plate currents than with triodes.
Patent GB-527816-A (GB)
Title: A process for the production of a rough road surface
IPC: E01C7/35
Filed: 1939-04-21
Abstract: 527,816. Road surfaces. DAMMANN, K. April 21, 1939, No. 11994. Convention date, April 28, 1938. Drawings to Specification. [Classes 20 (iv) and 107] Rough surfaces are produced on roads by forcing granular stony material, e.g. stone chippings, into a plastic layer by means of a consolidating or compressing implement which is wholly or partially covered with a yielding layer of rubber or the like, whereby the granular material is not completely embedded in the consolidated plastic layer. The chippings or like stony particles are so small in quantity that they do not touch one another in the plastic layer, which may consist of a sand-like asphalt mass, or a bituminous layer, or concrete with a thin asphaltic or bituminized coating between the stony particles and below the level of the tops thereof.
Patent GB-217195-A (GB)
Title: Improvements in the means of mounting roller bearings for the crankshafts of explosion engines
IPC: F16C9/02
Filed: 1924-05-15
Abstract: 217,195. Schneider et Cie. June 8, 1923, [Convention date]. Securing bearing-rings on shafts.-A roller racering B having two conical surfaces b connected together at their small ends is secured on the crankshaft of an explosion engine by four half rings E, clamped together by bolts F. The bolts are locked by the turned-up edges of a plate f. The outer race-ring A has side rims a to hold it in place in the crank case C which is in two parts.
Patent GB-1461454-A (GB)
Title: Treatment of cocoa
IPC: A23L5/20
Filed: 1974-03-19
Abstract: 1461454 Purifying cocoa G PILZ [trading as MASCHINENFABRIK J S PETZHOLDT] 19 March 1974 [19 March 1973] 12165/74 Heading A2B Cocoa or a cocoa containing mass is treated by continuously adding water to the mass preferably 0.3% to 1.6% by wt. whilst it is being conveyed to a mixer-emulsifier 5 (Fig. 1) from whence it is fed to a venter-evaporator 6 where the cocoa emulsion is spread on a surface and degassed by lifting the mass from the surface and replacing it thereon with simultaneous venting or the application of a vacuum to remove harmful flavours and odours. The mixer is preferably of the type shown in Fig. 2 in which the emulsion is forced in at 15 and through the central tube tangentially into the double truncated cone shaped space 9 at the region of minimum thickness 12 and out tangentially at the region of maximum thickness 11, and subsequenetly into the adjacent space 9 at region 11 and out at region 12 until reaching the end 16 of the mixer. The venter-evaporator is preferably of the type shown in Figs. 3 and 4 in which a vertical pipe 17 has a central rotating shaft 19 which carries arm 23 to centrifugalize the cocoa mass as a thin layer on the wall which is then scraped off by the peeler mouthpieces 24 at the end of the arms and forced out through openings 25 on the underside of the arm whence they are centrifugalized back onto the wall surface at a lower level, with consequent degassing and removal of harmful odours and flavours.