baber/WOPTO huggingface dataset:
Patent GB-274329-A (GB)
Title: Hat & cap holder for attachment to seats and the like
IPC: A47C7/64
Filed: 1927-02-08
Abstract: 274,329. Jones, V., and Samuels, W. Feb. 8, 1927. Hat holders. - A hat holder for fixing underneath a seat bottom &c. consists of a pair of rods B bent at their ends to provide legs A, C by which they are spaced from the seat bottom, the front legs A being longer than the rear legs C. Specification 28702/09 is referred to.
Patent GB-1107102-A (GB)
Title: Telephoto objective lens
Inventor: EGGERT JOACHIM
IPC: G02B13/02
Filed: 1965-06-30
Abstract: 1,107,102. Telephoto objectives. VOIGTLANDER A. G. June 30, 1965, No. 27783/65. Heading G2J. A telephoto objective having a front positive member V with at least three air-spaced components separated a distance a 3  from a rear negative member H with at least two air spaced components of opposite sign and having the strongest divergent glass-air surface r 11  concave to the diaphragm B is characterized by:- wherein:- F = focal length of the objective S<SP>1</SP> = back focal length # = refractive power of the complete objective Ï v  =   = sum of the surface refractive powers of V Ï H  = sum of the surface refractive powers of H. Optical data are given for the example shown and for two examples Fig. 3 (not shown), in which the rear member H consists of a negative meniscus L Va  concave to the diaphragm forming, with a positive meniscus L Vb  convex to the diaphragm, a positive component separated from a rear double concave element L V1 .
Patent GB-1234958-A (GB)
Title: Light conductors
Inventor: BRET ANTOINE
IPC: G21F7/02
Filed: 1968-06-12
Abstract: 1,234,958. Light conductors. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 12, 1968 [June 23, 1967], No.27834/68. Heading G2J. A light conductor for use in optical devices such as endoscopes or periscopes for transmitting optical patterns comprises a conduit 1 which has a non-reflecting internal surface or which is made of a material which becomes non-reflecting when used in a nuclear atmosphere and two transparent optical blocks 2 obturating the two extremities of the conduit, the conduit providing an enclosed space in which a vacuum is formed. The end blocks 2 may have different shapes from each other and may be prisms (2L) Fig.2 (not shown), discs, or convex or concave lenses, and may be made of glass, quartz, fused silica, which may be prepared by a synthesis process. The inner wall of the light conductor may be made non-reflecting by lining with graphite or any other temperature resistant material. The cross-section of the pipe 1 may be circular, rectangular, triangular, or hexagonal. An outer pipe (4) Fig.3 (not shown) made of fused silica may be provided concentric with the pipe 1, or alternatively a bundle of rods (5) Fig.5 (not shown) made of fused silica are disposed around the pipe parallel-with its axis. The conduit may be made of quartz or of fused silica.
Patent GB-938352-A (GB)
Title: Improvements in or relating to leak testing of nuclear reactor fuel elements
Inventor: ROSE KENNETH MILES
IPC: G01M3/20
Filed: 1961-08-01
Abstract: 938,352. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. July 16, 1962 [Aug 1, 1961], No. 27837/61. Class 39 (4). A method of leak testing a helium filled nuclear fuel element comprises immersing the fuel element in helium to cause helium to enter the sheath, sealing the sheath, transferring the fuel element to a chamber filled with a gas other than helium at a pressure such that if there is a leak helium can diffuse through the sheath into the chamber but such that helium will not desorb from the surface of the sheath, and finally testing the gas in the chamber for helium content without reducing the pressure of gas in the chamber below the pressure at which helium desorbs from the surface of the sheath. The fuel element 26 may comprise cylindrical pellets 28 of sintered uranium dioxide in a beryllium sheath 27. The sheath 27 is sealed by end plugs 29 in a helium filled welding chamber so that the internal free space. in the sheath is filled with helium. After welding, the fuel element is transferred with as little delay as possible to a gas-tight chamber 1 filled with air at about atmospheric pressure and connected at one end through an adjustable leak to a mass spectrometer leak detector 22. The adjustable leak should be such that the pressure in chamber 1 does not fall below about 0.9 atmosphere, since below this pressure helium adsorbed on the surface of the sheath 27 begins to desorb and would mask the effect of a leak. If there is delay between sealing the fuel element and testing it, the element should be immersed in helium before testing to ensure that if a large leak is present the element is re-filled with helium.
Patent GB-284043-A (GB)
Title: Improvements in the manufacture and trueing of built-up wheels
IPC: B60B31/00
Filed: 1926-11-06
Abstract: 284,043. McKenzie, G. Nov. 6, 1926. Wheel-building apparatus.-A jig, for use in building and trueing up wire wheels, of the kind described in Specification 258,336 consisting of a two-part clamp to support the hub and rim, has a centring device provided which supports the hub and allows for differences in diameter of the part supported. The centring device consists of a screwed holder 5 secured to each side of the centre of the jig and containing a spring-influenced sleeve 6 with a conical aperture 7 for engagement with the end of the hub spindle or hub. The outside surface of the sleeve is provided with an oil groove. Instead of a sleeve, a tapered plug to engage the inside of the hub may be used.
Patent GB-1182373-A (GB)
Title: A method of Combating Weeds with Herbicides containing N-Trifluoromethylphenyl-N',N'-Dimethylureas
IPC: A01N47/30
Filed: 1968-06-12
Abstract: 1,182,373. Herbicidal method using trifluoromethylphenyldimethylurea. CIBA Ltd. 12 June, 1968 [16 June, 1967], No. 27933/68. Heading A5E. A method of combatting weeds in sugarbeet cultures comprises applying to the cultures N-4-trifluoromethyl phenyl-N', N'-dimethylurea optionally together with a carrier. Specification 914,779 is referred to.
Patent GB-206995-A (GB)
Title: Improvements in slides for microscopy
IPC: G02B21/34
Filed: 1922-10-16
Abstract: 206,995. Kelvin, Bottomley, & Baird, Ltd., and King, F. A. Oct. 16, 1922. Drawings to Specification. Microscopes.-A built-up slide comprises a body portion or holder of glass &c. formed with an aperture in or over which is inserted a quartz or like disc, cell &c., transparent to ultra-violet rays.
Patent GB-1082337-A (GB)
Title: 1,2-dihydro-1-hydroxy-1,3,5-triazine derivatives
IPC: C07D413/04
Filed: 1966-06-22
Abstract: Novel compounds of Formula I <FORM:1082337/C2/1> wherein R is alkenyl of 2-8 carbon atoms, R1 is hydrogen, alkyl having 1-8 carbon atoms, or alkenyl having 2-8 carbon atoms, and A2, A3 and A4 are hydrogen or carboxylic acyl, at least one of A2 and A4 being carboxylic acyl, and acid addition salts thereof, are prepared by mixing a compound of Formula I in which A2, A3 and A4 are all hydrogen, with a carboxylic acid anhydride or a carboxylic acid chloride. The novel compounds exist in several tautomeric forms.  The nature of each acylate produced by the process of the invention depends on such factors as the nature of the dihydrotriazine reactant, the nature and amount of acylating agent, the reaction time and the reaction temperature.ALSO:Therapeutic and veterinary compositions having anti-hypertensive activity, which are useful for lowering blood pressure and for the treatment of shock and which may be administered orally, rectally or parenterally, contain as active ingredient a compound of formula <FORM:1082337/A5-A6/1> wherein R is alkenyl having 2-8 carbon atoms, R1 is hydrogen, alkyl having 1-8 carbon atoms, or alkenyl having 2-8 carbon atoms, and A2, A3 and A4 are hydrogen or carboxylic acyl, at least one of A2 and A4 being carboxylic acyl, and acid addition salts thereof, either alone or in conjunction with other drugs, e.g. diuretics, sympathetic blocking agents, garglion-blocking agents, peripheral vaso-dilators, reserpinoids, tranquillizers, sedatives, muscle relaxants, antihistamines and other anti-hypertensives.
Patent GB-519827-A (GB)
Title: Improvements relating to motor-driven vehicles
IPC: B60K5/00
Filed: 1938-09-27
Abstract: 519,827. Motor vehicles. PUGH, Ltd., C. H., and PUGH, J. G. Sept. 27, 1938, No, 28071. [Classes 79 (ii), 79 (iii) and 79 (v)] A vehicle which may be a small motor car or a works truck has a self-contained power unit comprising a transverse engine and a parallel clutch and transmission shaft, the power unit being mounted on an auxiliary frame bolted or otherwise secured directly to the chassis frame which is arranged above the wheel axles. In the construction shown the power unit is mounted in a frame-work comprising two side plates 12 connected together by tie-rods 13, 14, 15 and mounted on the chassis frame 1 by angle plates 18. The engine 16 is carried by bearer plates 19 supported on the tie-rods 14, 15 and a sprocket 28 on the crank-shaft is connected by a chain 29 to a chain wheel 30 on a cone clutch 31 mounted on a transverse shaft 17 supported in plates 12, 33. The clutch shaft 17 drives the rear axle 35 through reversing gear 34, 38 and chain gear 41 one of the road wheels 37 being fixed on the axle and the other loose thereon. The reversing gear, Fig. 8, comprises a shaft 39 having a gear 38 meshing with one gear 43 of a pair of meshed gears 43, 44 which are carried by a frame 42 pivoted on the shaft 39 so that either of the gears 43, 44 can be brought into engagement with a pinion 34 on the clutch shaft 17. The reversing gear frame 42 is rocked by a hand lever 45 and link 46. The clutch 31 is controlled by the clutch pedal 47 on a shaft 24 through a link or cable 48, a vertical lever arm 49 and a bell-crank lever 52. The engine throttle is actuated by an accelerator pedal 23 mounted on shaft 24 and connected to the throttle by a cable 22, a hand control also being provided .which comprises a shaft 25 on the steering column having an arm 27 at the lower end which overhangs and engages the accelerator pedal. A brake band 54 on a drum on the rear axle is applied by means of a brake pedal 57. The engine is started by means of a forwardly-projecting hand lever 61 having a quadrant or pinion 62 adapted to engage a freewheel sprocket 63 on the clutch 31. The engine may be at the front or any other suitable position, and a single front-wheel may be employed in the case of a works truck.
Patent GB-280972-A (GB)
Abstract: 280,972. Dreyfus, H. May 26, 1926. Acetic anhydride is produced by heating the vapour of acetic acid in presence of ortho-, pyro- or meta-phosphoric acid or a mixture of two or more of such acids, above or in admixture with porous substances such as pumice or kieselguhr, preferably at temperatures above the boiling point of acetic anhydride under the conditions obtaining, such as 100-400‹ C. The phosphoric acid may be stirred or agitated, and may be circulated between the reaction zone and a regeneration zone in which it is heated so as to remove the absorbed water. The reaction product is preferably passed through one or more fractionation columns to separate the acetic anhydride from water and unchanged acetic acid. The process may be effected under reduced pressure. If desired the crude gaseous reaction product may be circulated again through the phosphoric acid, the anhydride being preferably first removed. The separation of the anhydride from the crude reaction product may be effected in any suitable way, such as fractional distillation, and if desired the crude product may be distilled over dry sodium acetate. Specifications 256,663 and 257,968 are referred to.
Patent GB-1472670-A (GB)
Title: Differential amplifier
IPC: H03F3/45
Filed: 1975-07-04
Abstract: 1472670 Transistor amplifier PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 4 July 1975 [8 July 1974] 28272/75 Heading H3T In a high frequency differential amplifier the limit of rate of change of transfer of current between the branches is improved without increase in noise by forcing the common mode mean current through the branches to rise in step with the absolute differential signal; two input transistors 71, 72 (shown as npn) have emitters coupled via resistors 7, 8 to a current sink 11 also connected to the emitter of a third similar transistor T 3 , the emitters T 1 , T 2  being shunted through forward biased diodes D 1 , D 2  from a current source 12 also feeding the base of transistor T 3 . When quiescent the current sink 11 is adjusted to pass 10 % of its current through each of T 1  and T 2  and 80% through T 3 ; this proportion is not greatly disturbed until the signal is sufficient to turn off either D 1  or D 2 ; the base-emitter drop of T 3  remains equal to the drop across each diode plus that across its resistor 7 or 8. When, e.g. D 1  is turned off all the current from source 12 passes through D 2  and on further increase of differential signal the fall in the drop across 8 causes the base-emitter drop of T 3  to fall; its decrease in current raises the proportion of sink 11 current coming from T 1  and T 2 , so increasing their common mode current up to 50% through each. The action for an opposite signal is equivalent. The diodes D 1 , D 2  may be replaced by the base-emitter junction of two pnp transistors, these collectors going to line 5 (Fig. 1, not shown). Transistor T 3  may be replaced by a pnp transistor with its collector to line 5 and base to line 5 via a current sink (13, Fig. 3, not shown); the sink is also fed from the common point of diodes D 1 , D 2  or the equivalent transistors via two forward connected diodes in series. Then when the differential signal passes the level at which e.g. D 1  is turned off, the emitter current of the PNP transistor increases, augmenting the common mode current of T 1 , T 2 . The transistors and/or diodes many of the embodiments may be integrated.
Patent GB-1430547-A (GB)
Title: Inspection of containers
IPC: G01N33/00
Filed: 1974-06-26
Abstract: 1430547 Detecting faults in translucent containers TALCOMA TEORANTA and B J O'CONNOR 26 June 1974 [27 June 1973 14 May 1974] 28281/74 Heading G1A Apparatus for measuring extraneous matter or cracks in translucent containers, rotates the bottle about a vertical axis, scans a beam of light vertically across the bottle, intercepts transmitted light and generates an electrical signal therefrom, compares the electrical signal with a reference signal which varies with the vertical position of the light beam and rejects the container when the transmitted light signal is less than the reference. Scanning: A slit or ribbon of light 3 from projector 1 is reflected by tangential mirrors 5 on the surface of rotating drum 4, on to fixed mirrors 18, 19, 20 in vertical column 21. The resulting vertical scan beam passes through slit 23 which has photodetectors (not shown) at different heights on each side to provide timing pulses. The container 27 is mounted on a table 22 which rotates round column 21 and is rotated relative to the table 22 by frictional engagement with rollers 28. A slit 26 in mask 25 fixedly mounted on the table 22 between container 27 and column 21 scans across slit 23. Detector: comprises a diffusing screen 35 placed in front of the ends of fibre elements 31 mounted in an array in platform 32. The other ends of the fibres are connected to photomultiplier. Mirrors, normal to the plane of screen 35 may be placed around the screen.  Circuitry: The detector 34 output comprises a sequence of measuring signals interspersed with periods when only ambient light is being detected. The ambient light signal is stored on capacitor C1 between scans and subtracted during scan from the detector output at A1. The reference signal is generated by amplifier A4 from inputs VR3-VR8 selected by switches S3 to S8 in a sequence determined by signals from detectors 45 responding to the scanning beam. The reference signal at 63 is normally less in magnitude than the detector output signal at 62. When the reverse is true due to a fault, a pulse is generated at the output of amplifier A3 and this is fed via shaper A5 to shift register 71 which associates the rejection signal with the correct container. When containers of different colours are used, the detector output at a particular vertical scan point is compared with that of a normal container at the same point, the gain of an amplifier is stepped until it is sufficient to modify the output to its normal value and the amplifier is then used to modify either the output signal or the reference signal.
Patent GB-1434879-A (GB)
Title: Sulphur containing derivatives of alkyl phenyl ethers and their use as acaricides
IPC: A01N31/16
Filed: 1974-06-26
Abstract: 1434879 Alkoxyphenylthioethers, sulphoxides or sulphones NIPPON KAYAKU KK 26 June 1974 [19 July 1973] 28393/74 Heading C2C The invention comprises compounds of the formula wherein Y represents Cl or CH 3 , R represents C 1  to C 8  alkyl and n is 0, 1 or 2. They may be obtained by condensing a compound of the formula with a compound of the formula wherein M is H or an alkali metal atom and X is halogen, if necessary in the presence of an alkaline compound. This reaction may be carried out in the presence of a solvent. Compounds in which n is 1 or 2 may also be obtained by oxidizing compounds in which n is 0. Specified oxidizing agents are hydrogen peroxide, fuming nitric acid, a permanganate or a persulphate. Acaricidal compositions comprise the above compounds in combination with one or adjuvants in the form of an emulsion, a wettable powder or granules.
Patent GB-270361-A (GB)
Title: Improvements in taps for fluids
IPC: B67D3/04
Filed: 1925-11-11
Abstract: 270,361. Phillips, C. S. Nov. 11, 1925. Rotary cylindrical valves; handles.-In a tap for use more particularly with oil drums and of the type comprising two telescopic ported tubular members a, b, Fig. 7, these members are arranged so that when they are extended from the collapsed position and then relatively rotated the ports c, g come into register for discharge, as shown. The inner tube is closed at the inner end and has a discharge opening f at the outer end. A pin i in the inner tube is guided in a slot j in the outer tube to control the relative movements, the slot being longitudinal with a right-angled portion at the outer end, and an inclined portion at the inner end to pull the knob a<1> with a washer k tight up against the end b<1> of the outer tube in the closed position. The tap may, in a modification, be operated by a removable handle in the form of a key m, Fig. 12, which is inserted through a slot n, Fig. 10, in a front cover plate o and then turned to engage behind the cover plate for the longitudinal movement, and against lateral stops for the rotary movements.
Patent GB-215272-A (GB)
Title: Improvements in gates and the like
IPC: E06B11/02
Filed: 1923-11-12
Abstract: 215,272. Hawken, G. A. Nov. 12, 1923. Gates.-A self-closing gate or the like is provided with a number of rubber or other vertical rollers 2 that project beyond the plane of the gate and that are adapted to be struck by an approaching vehicle so that the gate may thereby be opened. The gate may be held open by hooks 11 and may be kept lightly closed by means of spring-pressed balls 7 housed in vertical sockets 6 in the central gate members and engaging recesses 9 in a ground post 10.
Patent GB-173352-A (GB)
Title: Improvements in or relating to poultry houses or the like
IPC: A01K31/04
Filed: 1920-10-09
Abstract: 173,352. Waymouth, C. S. H. Oct. 9, 1920. Poultry houses. - The droppings board 4 and perch 6 of a poultry house are secured by angle-pieces 5 to a flap 1 hinged at 2 and fitting an opening in the side of the house, so that the perch and board can be cleaned without entering the house. A frame 7 fitted with glass or wire netting closes the opening left when the parts are turned to their extreme position. The board 4 when outside the house slopes downwardly to throw off rain, the angle between the board 4 and flap 1 being less than a rightangle.
Patent GB-1010487-A (GB)
Title: Improved fastenings for metal straps
IPC: B65D63/04
Filed: 1963-07-19
Abstract: 1,010,487. Clamps. TITAN EISENWARENFABRIK, G.m.b.H. July 19, 1963 [Dec. 5, 1962], No. 28722/63. Heading E2B. [Also in Division A4] Metal straps have their overlapping ends 10, 11 connected together by fastening catches 12, 13, comprising webs 15 bent out from the plane of the straps from between stepped slits 14, and locking catches 16 which comprise at least one zig-zag slit 17 formed in each strap. The locking catches 16 may comprise two slits 17 symmetrically disposed on either side of the centre line of the straps with the enclosed web portions 22 being bent out of the plane of the strap, each slit having one section 18 formed parallel to the axis of the strap and two sections 19, 20 which are formed oblique to the axis. When the two ends 10, 11 are superimposed the web 15 of the strap 10 engages the undeformed part of the strap 11 and locks the straps against movement in one direction, and the bent out web 22 of strap 10 engages behind the web 22 of strap 11 to prevent movement of the strap ends in either direction.
Patent GB-862503-A (GB)
Title: Improvements in fire detectors
IPC: G08B17/06
Filed: 1956-09-20
Abstract: 862,503. Thermal switches. ASSOCIATED FIRE ALARMS Ltd., McNEIL, E. A., and TAYLER, W. F. Dec. 2, 1957 [Sept. 20, 1956], No. 28755/56. Class 38 (5). A fire detector comprises a massive mild steel member 10 having at each end a platform 11 to which a wire, ribbon or (as shown) a strip of stainless steel 14 is stretched and secured by means of bolts 15, the bolt holes in the strip 14 being at less distance apart than those of the member 10, and the bolts having conical sections 17 whereby the strip is tensioned as the bolts are tightened. A screw 30 adjustably held by a nut 35 bearing on a reinforcing clip 29 on the strip 14 is pressed by a spring 32 so as to urge a movable contact 24 against a fixed screw contact 27. Differential expansion between the member 10 and strip 14 due either to a sudden temperature rise or a gradual one, causes the screw 30 to move the contact 24 against the contact 27.
Patent GB-926876-A (GB)
Title: Improvements in or relating to the frequency control of electronic oscillators
Inventor: TAYLOR JOHN MALCOLM
IPC: H03B5/36
Filed: 1958-09-09
Abstract: 926,876. Transistor oscillator circuits; frequency modulation. PLESSEY CO. Ltd. Sept. 4, 1959 [Sept. 9, 1958], No. 28836/58. Classes 40 (5) and 40 (6). A crystal oscillator has in series with the crystal X a junction capacitance Cb or Ca of a transistor S or semi-conductor diode D whose value is varied by a manually adjustable voltage V varying the oscillator frequency. The voltage V may be of polarity rendering the transistor or diode variably conductive and varying the effective value of depletion layer capacitance in series with it. A capacitor Cb or Ca may shunt the transistor or diode to vary the frequency control range.
Patent GB-485921-A (GB)
Title: Improvements in or relating to fasteners for use with the bonnets of motor vehicles, including aircraft
IPC: E05B65/19
Filed: 1936-10-24
Abstract: 485,921. Fastenings. RIMES, C. L. Oct. 24, 1936, No. 28953. [Class 44] A fastener for a car bonnet comprises aslidinglymounted and spring-held staple 14 on the car frame, a pivoted catch 6 on the bonnet 3, an operating lever 1 which may lie flush with the bonnet in the fastening position and a link 10 connecting the lever and the catch. The parts are arranged so that in the fastening position the link 10 is substantially at or beyond the dead centre position. The catch 6 may be replaced by one slidingly mounted on the inside of the bonnet. Locking means such as a spring-pressed bolt may be used to engage the free end of the lever 1 when in the fastening position. Specification 456,012 is referred to.