baber/WOPTO huggingface dataset:
Patent GB-1111714-A (GB)
Title: Process for the production of ethylenic compounds
Inventor: CLARK Duncan
IPC: C07C43/20
Filed: 1964-09-02
Abstract: Vinyl and allyl ethers are prepared by contacting a vinyl or allyl ester of an aliphatic carboxylic acid with an aliphatic C1-C20 alcohol or a mono-, di-, or polyhydric phenol, under substantially anhydrous conditions, or in the presence of at most 10% water by weight of the reaction solution, in the presence of a salt or co-ordination compound of platinum, palladium, rhodium, iridium, ruthenium or osmium.  The esters may be substituted by alkyl groups or halogen atoms, aryl or heterocyclic groups and are suitably vinyl, allyl or isopropenyl acetates. The reaction may be carried out at a temperature of from - 50 DEG  to 200 DEG  C. and a base may be added to reduce formations of acetal by-products.  This reduction may also be accomplished by maintaining a stationary acetal concentration in the reaction mixture by adding acetals at the start and then removing or recycling them in a continuous process.  The catalyst which may be preformed or formed in situ is suitably a salt or co-ordination compound of palladium and suitable complex compounds are lithium chloro-palladite, lithium chloroplatinate, chloroplatinic acid, and dichloro bis(benzonitrile)-palladium-(II). The precipation of the catalyst, particularly palladium, by reductive side-reactions may be prevented by incorporating a redox-system in the process, which may be used in the presence of oxygen.  When an acetate or complex acetate is used as catalyst precipitation of the metal may be prevented by the addition of an acid stronger than acetic acid, e.g. hydrochloric acid.  The continuous process includes the removal of the carboxylic product of the reaction and this may be facilitated by maintaining a stationary concentration of carboxylic acid in the reaction mixture.  The examples describe the preparation of methyl vinyl ether, vinyl isobutyl ether, vinyl isopropyl ether, isopropenyl methyl ether, allyl methyl ether and allyl isopropyl ether.
Patent GB-1484945-A (GB)
Title: Cleaning and/or sterilization of contact lenses
IPC: G02C7/04
Filed: 1974-08-16
Abstract: 1484945 Cleansing and sterilizing soft contact lenses R E MCCLURE 16 Aug 1974 [16 Aug 1973] 36273/74 Heading G2J Hydrophilic soft contact lenses are cleansed and sterilized by immersion in a biologically inert aqueous solution e.g. normal saline held in a storage container 6 which is subjected to ultrasonic vibration produced by oscillator 8, the temperature of the solution being sensed by thermistor 32 and the ultrasonic vibrations being intermittently interrupted to prevent the temperature rising above about 70‹C. Air vents 78 and 82 aid in cooling the container and an off-on switch 16 is provided for the oscillator. The container 6 may be partitioned to hold a pair of lenses and may be fitted with a cover 22.
Patent GB-508511-A (GB)
Title: Improvements in or relating to impulse transmitters of the dial type for use in telephone or like systems
IPC: H04M1/31
Filed: 1937-12-31
Abstract: 508,511. Impulse transmitters. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Dec. 31, 1937, No. 36297. Convention date, Jan. 2. [Class 40 (iv)] In an impulse transmitter of the dial type employing a pawl and ratchet wheel drive between the finger-plate and impulse cam, e.g. as described in Specification 234,036, [Class 40 (iv)], the pawl is held out of engagement with the ratchet wheel during the setting movement thereby preventing clicking noise. The pawl 11 pivoted at 12 to a plate 9 on the dial shaft has a 'pin 14 situated in an opening 21 in a plate 20 mounted between friction washers 18, 19 on a shoulder of the combined ratchet wheel 16 and gear wheel 17 driving the impulse cam. When the dial is rotated, the pawl rides up a ratchet tooth and engages the edge 26 of the opening 21 at ,the outside corner whereupon the plate 20 is carried around by the dial. The drag on the plate by washer 19 and the inclination of the edge 26 of the opening tend to urge the nose of the pawl outwardly against the action of the pawl spring (not shown) and the drag is increased by the power spring 24 of the dial which holds the parts in frictional engagement. When the dial is released the pawl engages the ratchet wheel and operates in the usual manner.
Patent GB-1291798-A (GB)
Title: Energy absorbing steering column
IPC: B62D1/19
Filed: 1971-08-03
Abstract: 1291798 Collapsible steering columns FORD MOTOR CO Ltd 3 Aug 1971 [2 Sept 1970] 36382/71 Heading B7H  In an energy absorbing steering column a torque transmitting component, such as a gear shift tube, comprises inner and outer telescopic elements 22, 23 with a recess 36 formed in at least one of their adjoining portions to receive a protruding portion 34 of a resilient retainer 29 exerting a radially directed force on the elements, the protruding portion 34 being displaceable from the recess and compressed between the adjoining portions upon relative axial displacement of the elements. The adjoining portions may have complementary D- shaped cross-sections with the retainer 29 which may be spring steel or resilient plastics material compressed between the two flat portions thereof.
Patent GB-970991-A (GB)
Title: Improvements in or relating to bathing caps
IPC: A42B1/12
Filed: 1960-10-24
Abstract: 970,991. Bathing caps. W. S. FREEMAN. Oct. 20, 1961 [Oct. 24, 1960], No. 36425/60. Heading A3V. A bathing cap 21 has an air-filled tube 23 incorporated within the thickness of the material of the cap or adhesively secured to the inner face of the cap, which extends around the rim of the cap and communicates with an air-filled pocket 25 which fits into the nape of the wearer's neck. A further tube 26 communicates with both the tube 23 and the pocket 25. The tube may be inflated and sealed during manufacture or inflatable by the wearer by means of a tubular extension (not shown) provided with a sealing plug. Specification 624,945 is referred to.
Patent GB-1165276-A (GB)
Title: A Device for Measuring Hardness of Plastics by means of Pendulum Method
IPC: G01N3/50
Filed: 1967-08-08
Abstract: 1,165,276. Digital measurement of hardness. POLITECHNIKA WROCLAWSKA. 8 Aug., 1967 [8 Aug., 1966], No. 36454/67. Heading G4H. In apparatus for measuring the hardness of a plastic a pendulum is supported to pivot on a test piece of the plastic and photo-electric sensing means connected through a bi-stable device to a counter are used to indicate the number of swings made before the pendulum is damped from a starting angle of swing to a predetermined smaller angle. Photo-cells F 1 , F 2  are placed at the minimum angle, the bob screening them from light to give a pulse. The bi-stable P is reset by photo-cell F 1  and set by F 2 , to pass a pulse to the counter. The pendulum is given an initial angle of swing of 5 degrees and the sensing photo-cells F 1 , F 2  give pulses until the angle of swing is 2 degrees. During this time the counter L counts the swings, the number of which represents the hardness of the test piece. The apparatus is first calibrated by supporting the pendulum on a standard glass plate and adjusting weights on the pendulum until the number of swings is correct.
Patent GB-1218452-A (GB)
Title: Means for indicating pressure-changes in a system
Inventor: CHRISTY VERNON BRUCE
IPC: G01L11/00
Filed: 1968-07-31
Abstract: 1,218,452. Indicating brake pressure changes. COBB SLATER INSTRUMENT CO. Ltd. 30 July, 1969 [31 July, 1968], No. 36463/68. Heading F2E. [Also in Division G1] An instrument having an outer sealed chamber 5 and an inner sealed chamber 11 are interconnected through a double manometer tube 12, 13 device cross-connected between their upper and lower ends and the outer chamber 5 is connected via a union 6 to a pressure or vacuum system results in an increase or decrease in pressure in the outer chamber which will create a flow, due to the pressure difference between the chambers 5, 11, through the tubes 12, 13 to give a reading on a scale.
Patent GB-363117-A (GB)
Title: Improvements in and relating to sound recording apparatus
IPC: G11B7/00
Filed: 1930-12-04
Abstract: 363,117. Optical sound - recording apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hewlett, C. W.; 1770, Wendell Avenue, Schenectady, New York, U.S.A.) Dec. 4, 1930, No. 36617. Convention date, Dec. 4, 1929. Addition to 361,907. [Class 40 (ii).] Optical sound-recording apparatus is designed to produce a sound record which substantially eliminates background noise, especially during the silent parts of a sound reproduction, by a modification of the method described in the parent Specification, in which a sensitive film is exposed to a light beam which is varied in accordance with the wave form of the sound to be recorded and the mean value of which beam is also varied in accordance with the volume of the sound. According to the present invention, a thermionic amplifier has its plate circuit connected with a mirror galvanometer and means are provided for varying the grid potential of this amplifier in accordance with the wave form of the sound to be recorded and for supplying a biasing potential from a rectified current source to the grid of this amplifier, which potential varies in accordance with the volume of the sound. The input signal to be recorded is applied to the circuit 18 and amplified by two thermionic amplifiers 22, 25. A third thermionic device 30 acts as a rectifier and is fed from the amplifier 25. The rectified current from the device 30 is applied to bias the grid of the thermionic amplifier 34. To the grid of the amplifier 34 is applied a portion of the amplified signal from the amplifier 25 of such magnitude that the peak values of these signals are equal to or a little less than the bias produced by the operation of the valve 30. The conductor loop of an oscillograph galvanometer 11 is arranged in the plate circuit of the amplifier 34. When no sound is being recorded there is no circuit through the galvanometer and it is arranged that the entire width of the soundrecord track on the moving film 1 is illuminated by light reflected by the mirror 10 from the source 7. When sound comes on the negative bias on the device 34 is increased, so that the mean plate current is reduced by an amount equal to or slightly greater than the peak value of the current impulses. This alters the mean position of the recording light beam to shift the edge of the light beam just enough or a little more than enough to accommodate the full swing of the vibrations of the beam. In this way a negative film record is produced as shown by Fig. 2.
Patent GB-1009819-A (GB)
Title: Web threading clip
IPC: D06C3/04
Filed: 1964-09-07
Abstract: 1,009,819. Clamp fastenings. SVENSKA FLAKTFABRIKEN, A.B. Sept. 7, 1964 [Aug. 5, 1964], No. 36624/64. Heading E2B. [Also in Division B6]  A clip for threading the leading end of a web through apparatus such as drying apparatus comprises a pair of mutually opposed wings 1 each hinged to a main body portion 2. Spring means, such as those illustrated in Figs. 2, 3 and 5 are located within the wings and body portion of the clip, which may be of canvas, to bias the wings against the body portion. Rivets 6 are provided to retain the spring elements. Specification 912,485 is referred to.
Patent GB-1325274-A (GB)
Title: Difluoromethyl 1,2,2,3,3,-pentafluoropropyl ether and precursors thereof
IPC: C07C43/12
Filed: 1971-08-04
Abstract: 1325274 Difluoromethyl pentafluoropropyl ether BAXTER LABORATORIES Inc 4 Aug 1971 [10 Aug 1970] 36624/71 Heading C2C [Also in Division A5] The novel compound, difluoromethyl 1,2,2,3,3 - pentafluoropropyl ether may be obtained by reacting 1-chloro-2,2,3,3- tetrafluoropropyl difluoromethyl ether with 1/3to ¢ molar equivalents of BrF 3  at a temperature in the range 25 to 60 C. The intermediate may be obtained by reacting difluoromethyl 2,2,3,3 - tetrafluoropropyl ether with chlorine or sulphuryl chloride in the presence of U.V. light (preferably using 0À5 to 1À5 moles of Cl 2  per mole of starting material at 15 to 30 C.) to form mainly the monochloroether with 1,1- dichloro - 2,2,3,3 - tetrafluoropropyl difluoromethyl ether as secondary product. The latter can be largely removed by fractional distillation before reaction with BrF 3 , or the mixture can be reacted with BrF 3  followed by reduction of any intermediate with LiAlH 4  to yield the desired final product CHF 2 OCHFCF 2 CHF 2 . The product is useful as a general anaesthetic agent.
Patent GB-1228532-A (GB)
IPC: C07C17/02
Filed: 1969-07-22
Abstract: 1,228,532. Meso-1,2,3,4-tetrabromobutane. FARBWERKE HOECHST A.G. 22 July, 1969, No. 36738/69. Heading C2C. Meso-1,2,3,4-tetrabromobutane is prepared by reaction of butadiene-(1,3) with liquid bromine in the presence of liquid sulphur dioxide which is free from foreign solvents, the proportion by volume of liquid bromine to liquid sulphur dioxide being 1 to at least 1.
Patent GB-1015840-A (GB)
Title: Thermionic valves
Inventor: THOMPSON BERNARD
IPC: H01J19/30
Filed: 1964-09-08
Abstract: 1,015,840. Electrode materials and processing. STANDARD TELEPHONES & CABLES Ltd. Sept. 8, 1964, No. 36742/64. Heading H1D. A grid for a thermionic valve is made from a metal base covered with a barrier layer of a metal carbide which does not react with or diffuse with the base and a surface coating of a metal boride having a low thermionic emission and being such that it does not diffuse through The barrier layer during operation of the valve. The metal base may be molybdenum, tantalum, tungsten or niobium or an alloy between any of them. The metal carbide may be that of zirconium, titanium, vanadium, niobium, chromium, tantalum, tungsten, thorium or uranium. The surface coating may be a boride of zirconium, titanium or tantalum. An example is given in which a grid of molybdenum or tantalum is first formed, then cleaned, vacuum-stored at 1250‹ C. for 30 minutes, then sprayed with a mixture of zirconium carbide, then dried and sintered at 2000‹ C. for 20 minutes, oven pressure 5 x 10<SP>-5</SP> mm. mercury, to give a coating thickness of not less than 25 microns. A zirconium boride mixture is then sprayed on and after drying the grid is vacuum stoved at 1850‹ C. for 20 minutes, to give a coating thickness of about 10 microns. In the spray mixtures, the zirconium carbide and boride are mixed with organic binders, the mixture constituencies being given. Mixtures of zirconium and carbon, and zirconium and boron which will react together to give the carbides and borides may be used. The sintering may be omitted or done in one operation.
Patent GB-1111146-A (GB)
Title: Method of manufacturing articles of footwear and footwear made by said method
IPC: A43B13/32
Filed: 1965-08-26
Abstract: 1,111,146. Boots &c. RO-SEARCH Inc. 26 Aug., 1965 [4 Sept., 1964], No. 36794/65. Heading A3B. [Also in Division B5] In moulding a sole of elastomeric material on to a shoe upper 1 the upper is provided with a ridge or bead 4 which forms a seal with the side wall 11 of the mould and which, in the completed shoe, is embedded in the sole and separates the sole material from the exposed lower edge of the upper 1 The ridge 4 may be a fold stitched at 6 or may be formed by doubling the lasting margin so that its free edge faces outwards, the two layers being stitched together (Fig. 3) or a strip may be sewn to the lasting margin (Fig. 4). In making the shoe the lower surface 3 of the lasting margin may be roughened (roughened not being necessary in the second embodiment when the flesh side of the margin faces the sole) and the upper surface 2 may be coated with adhesive, the upper 1 is assembled on a moulding last with an insole 9 using string or clips to hold the upper in place, the last is placed on the mould and the elastomeric material 8 is cured under heat and pressure, the elastomeric material bonding the lasting margin to the insole 9. The elastomeric material may be injected under pressure into the mould cavity, or may be placed in the mould cavity and pressure applied by upward movement of the bottom plate 7 of the mould (Fig. 1) or the elastomeric material may be placed in the cavity and expanded by heat or chemical reaction.
Patent GB-1094700-A (GB)
Title: Device for indicating the heading of a ship or boat
IPC: G09B19/16
Filed: 1965-11-27
Abstract: 1,094,700. Determining headings. D. M. BAILEY. Nov.23, 1966 [Aug.27, 1965], No.36850/65. Heading G1F. A device for indicating the heading of a vessel observed at night comprises a disc 10 marked around its periphery with the points of the compass and/or a scale in degrees, and a second disc 12 having marked thereon an index mark and red and green indicator marks 14, 13 and a pair of sectors 16, 17 one 17 being red and the other green, arranged so that when the index mark is set against the point of the compass on which a vessel's port or starboard light is sighted, the associated correspondingly coloured sector indicates the limits within which the heading of the observed vessel lies. A pointer 18 is provided to relate the observing vessel's heading to that of the sighted light, and a further concentric disc 19 having a blue sector 21 is provided so that if the observed vessel is known to be a sailing vessel, then if a mark 20 on the disc 19 is set to the direction of the prevailing wind, the blue sector will cover any parts of the red and green sectors of the disc 12 in which the sailing vessel's heading cannot lie.
Patent GB-1292558-A (GB)
Title: Apparatus for the lateral guiding of material in strip form
IPC: G03B1/44
Filed: 1971-08-05
Abstract: 1292558 Guiding webs AGFA-GEVAERT AG 5 Aug 1971 [6 Aug 1970] 36868/71 Heading B8R Apparatus suitable for guiding webs of different widths comprises a set of guide rails 11, 12 which define a path for the widest web to be used, and a set of further guide members 15, 16 which define a path for a narrower web. The members 15, 16 are pivotally mounted at 13, 14 as shown, and are provided with oblique surfaces 15c, 16c; thus, the narrower web 3 can be guided by the members 15, 16 but when the leading edge of the wider web meets these surfaces 15c, 16c the members 15, 16 are pivoted to an inoperative position and the web can then be guided by the rails 11, 12. Further sets of inner guide members may be provided. The movable members may be urged into their operative positions solely by the action of gravity or by means of springs, and the movement may be effected by levers or by switch-operated electromagnetic arrangements responsive to the width of the web.
Patent GB-1282309-A (GB)
Title: Reinforcing bars for concrete
IPC: E04C5/03
Filed: 1969-07-22
Abstract: 1282309 Reinforcing bars OESTERREICHISCH-ALPINE MONTANGESELLSCHAFT 22 July 1969 [22 July 1968] 36902/69 Heading E1K A reinforcing bar for concrete has an end plan view bounded partially by convex arcs and straight lines, the bar having longitudinal grooves traversed by ribs 5. The arcs are arcs of two or three contacting or overlapping circles. Each circle is connected with the other(s) over a width of at least half the average diameter of the circles. Longitudinal ribs (8, Fig. 5, not shown) may be joined by further transverse ribs (9).
Patent GB-1323583-A (GB)
Title: Safety belt assemblies suitable for use in motor vehicles
IPC: B60R22/18
Filed: 1970-07-30
Abstract: 1323583 Safety belt assemblies SOC ANON FRANCAISE DU FERODO 30 July 1970 [30 July 1969 10 Dec 1969] 37022/70 Heading A3V A safety belt assembly comprises a first belt 9 which can be secured to an upper part of a motor vehicle body on one side of a vehicle seat and to a lower part of the vehicle body at the one side of the vehicle seat, a second belt 17 which can be secured to a lower part of the vehicle body at the other side of the seat, means 18 for releasably securing the first belt to the second belt, said means including a slide member 14 around part of which the first belt extends in frictional engagement therewith and means provided on the slide member or the first belt to provide additional frictional resistance so that a limited degree of sliding movement of the first belt relative to the slide member takes place when under load. The belt portions 15, 16 may be maintained in frictional engagement with each other. The means for providing additional friction may be a layer of epoxy resinous material (which may be incompletely cured) applied to the slide member or to the first belt. In other embodiments, the slide member may be integral with the releasable securing means 18 (see Figs. 4-7 (not shown); the means for providing additional friction may be provided by a removable metal U-shaped element, having either a coating or a roughening of its surface to provide increased friction, and the resistance provided in one direction may be greater than that in the opposite direction, see Figs. 8-11 and 19-24 (not shown); the slide member may include a movable part around which the first belt passes, see Figs. 15-16 (not shown); or the slide member may comprise a plurality of bars, see Figs. 17-18 (not shown). Stop means may be provided to limit the movement of the first belt relative to the slide member.
Patent GB-1521203-A (GB)
Title: Non-destructive testing process and apparatus
IPC: G01N27/90
Filed: 1976-09-08
Abstract: 1521203 Eddy current testing COMMISSARIAT A L'ENERGIE ATOMIQUE 8 Sept 1976 [9 Sept 1975] 37174/76 Heading G1N The invention relates to a process and apparatus for eddy current testing of objects wherein a part of the initial signal produced in the process or apparatus is eliminated, the part being due to a parameter or parameters of the object. The process comprises the steps of displacing a probe 12 in the proximity of the object, supplying the probe with an excitation current of n different frequencies as from oscillators 26, 28 and analyzing the components of each of the n frequencies in the signal provided by the probe. The analysis comprises for each component separating the resistive part in phase with the excitation current from the reactive part Y in quadrature. Parts X, Y of a component at a first frequency are then modified so that in the overall signal the part of the signal corresponding to a parameter to be eliminated is coincident and equal to the part of the signal corresponding to the parameter of a second frequency. The modified signal and signal at the second frequency are then subtracted to provide a signal corresponding solely to a fault. The signal produced by the subtraction is displayed as on a CRT 90. As shown the probe 12 comprises a bridge network of two resistances 18 and two inductances 20 the output at 24 being fed through a circuit comprising a pre-amp 34 or imbalance compensating circuit 36, an amplifier 42, two band pass filters 44, 46 each centred on one of the two frequencies respectively, amplifiers 48, 50, analyzing memory circuits 52, 54 receiving reference signals from respective oscillators 26, 28 and low pass filters 68, 70 to provide the respective resistive and reactive parts X A , Y A , X B , Y B . The last mentioned parts pass to the elimination circuit which comprises for each frequency a weighting circuit 80, 82 whereby the signals may be partly modified as stated above as by the employment of multipliers 80x, 80y, 82x, 82y. The phase of the partly modified signals from circuit 80 is then phase shifted in a dephasing circuit 84 from where the signals are fed to subtraction circuits 86, 88. A circuit 92 is interposed between the subtraction circuits 86, 88 and the CRT 90 such that the orientation of the signal displayed thereon may be adjusted. Switching means 94 may be provided such that signals at various points of the circuit may be applied to the CRT 90.