baber/WOPTO huggingface dataset:
Patent GB-940928-A (GB)
Title: Process for the preparation of substituted and unsubstituted aryl naphthenes
IPC: C07C2/74
Filed: 1962-05-10
Abstract: Aryl naphthenes are obtained when at least one aromatic or alkyl aromatic hydrocarbon is treated in the liquid phase with hydrogen at not more than 250 DEG  C. and less than 100 atmospheres hydrogen pressure in the presence of a catalyst comprising a hydrogenation catalyst and a cracking catalyst.  The hydrogenation component may be Ni, Co, Fe, Pt, Pd, Ir, Os, Rh, Ru, Cr2O3, MoO3, WO3, MoS2, NiS or WS2, and is present in an amount of 0.05-25% by weight of the cracking catalyst which may be an acidic silica-based catalyst also containing an oxide of aluminium, calcium, zirconium or magnesium in admixture or combination. Inert gases (nitrogen or saturated hydrocarbons) or liquids (cyclohexane or decahydronaphthalene) may be present.  Benzene yields phenyl cyclohexane, alkyl benzenes yield alkyl phenyl alkyl cyclohexanes, naphthalenes yield naphthyl hydronaphthalenes and mixtures of (alkyl) benzene and naphthalene yield (alkyl) phenyl hydronaphthalene.  The product also contains hydrogenated starting materials.
Patent GB-1300714-A (GB)
Title: Refractories with a non-aqueous bond
IPC: C04B33/13
Filed: 1971-05-28
Abstract: 1300714 Refractories DRESSER INDUSTRIES Inc 28 May 1971 [10 June 1970] 18149/71 Heading C1J A refractory material contains a refractory aggregate and a binder consisting of a granular P 2 O 5  containing material that gives an analysis at least 50% by wieght of P 2 O 5 , and a fatty acid containing pitch. The aggregate may be alumina, calcined fireclay, crude fireclay, calcined bauxite, crude bauxite, dead burned magnesite, kyanite, chrome ore, zirconia, zircon or any mixture. The fatty acid-containg pitch is the residual material obtained in fractional distillation of animal or vegetable materials. The pitch may be "saturated" or "unsaturated".
Patent GB-573605-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J19/66
Filed: 1943-11-02
Abstract: 573,605. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., and GIBSON, W. T. Nov. 2, 1943, No. 18158. [Class 39 (i)] [Also in Group XXXVI] A multi-pin electron discharge device with the terminal pins sealed through a flat base 12 forming part of the envelope 11 and distributed so as to occupy all the corners of a regular polygon, is characterised by a pin or socket mounted asymmetrically with respect to the aforesaid pins to ensure correct insertion in a holder. In one form, an annular ring 17 of suitable metal is sealed into the glass envelope 11 with the lug 15 attached. In this case, the ring may form a terminal for a screen or other electrode of the valve.
Patent GB-1424481-A (GB)
Title: Preparation of alumina slurries
IPC: C01F7/02
Filed: 1973-04-16
Abstract: 1424481 Preparation of alumina slurries CONTINENTAL OIL CO 16 April 1973 [14 April 1972] 18295/73 Heading C1A A method of preparing concentrated alumina slurries comprises evaporating an organic solvent-aqueous alumina mixture comprising 1- 15% wt. Al 2 O 3 , 20-90% wt. organic solvent and 15-65% wt. water to produce a concentrated alumina slurry comprising from 14 to 20% wt. Al 2 O 3 , 15 to 70% wt. H 2 O and 71 to 10% wt. of organic solvent. Solvents preferred are ethanol, propanol, isopropanol, n-butanol, isobutanol or tertiary butanol. The solvent and water are preferably removed by azeotropic evaporation under reduced pressure. During the evaporation process, the solvent-aqueous alumina mixture is preferably subjected to a shear effect of from 10 to 10,000 sec.-<SP>1</SP>. The concentrated slurry may be drum or spray dried to produce alumina having a surface area of from 260 to 400 m.<SP>2</SP>/g., a pore volume of from 1 to 2À75 c.c/g. and a loose bulk density of from 7À5 to 25 lbs./ft.<SP>3</SP>.
Patent GB-695800-A (GB)
Title: Electric discharge valve mercury vapour current converters for obtaining large powers at high frequencies
IPC: H02M1/00
Filed: 1950-07-21
Abstract: 695,800. Converting. AKT.-GES. BROWN, BOVERI, & CIE. July 21, 1950 [July 21, 1949], No. 18303/50. Class 38 (ii). A grid-controlled electric discharge valve converter for operation at high frequencies is characterized in that a condenser is connected between the zero point of the primary winding of the converter transformer and the cathode of the converter, the magnitude of the condenser and of the stray inductance of the transformer are so chosen that in normal operation the direct current of the rectifier has interruptions. A direct current source 16 feeds the condenser 18 over an inductor 17 and is also connected to the cathode of the converter 23 and the centre taps of the primary windings of transformers 19, 20, 21, the secondaries of which supply-in parallel -a consuming network 22. The anodes of the converter are connected in pairs to the ends of the primary windings and operate three in parallel, the grids being energized from a suitable pulse source 24 and commutation effected by condensers 25, 26, 27. The provision of the condenser 18, of large capacitance, eliminates the effect of the inductor 17-and also the leakage inductance of the transformer, which should be very small, and ensures rapid de-ionization of the converter thus allowing the steepness of the rise and fall of the anode curve to be reduced and to be separated by current free intervals. The invention may also be arranged so as to operate from a three-phase supply.
Patent GB-1076672-A (GB)
Title: Cooking utensil
IPC: A47J37/10
Filed: 1965-04-30
Abstract: 1,076,672. Booking utensils. R. RUSSELL. May 10, 1966 [April 30; 1965], No. 18333/65. Heading A4A. A cooking utensil comprises an open tray or like receptacle 1 adapted for the purpose of roasting or baking food and a hood element 3 which in use is disposed between the food and the back and top of an oven, such hood element being located at one end of, and partially covering, the tray 1 so as to prevent fat or other substance splashing from the food on to the said parts of the oven. The hood 3, which has side walls 4, a rear wall 5 and a roof 6, is formed separately from or hinged to the tray 1 so that it can be re-positioned when the tray is turned round and may be provided with a support bracket 15 and a reinforced extended rim containing turned over end-pieces 14 in order to engage the rim of the tray 1.
Patent GB-592217-A (GB)
Title: Improvements in or relating to piezoelectric transducer means
IPC: B06B1/06
Filed: 1943-11-04
Abstract: 592,217. Piezo - electric telephone instruments. BRUSH DEVELOPMENT CO. Nov. 4, 1943, No. 18357. Convention date, Feb. 18, 1942. [Class 40 (iv)] [Also in Group XL] A piezo-electric compressional. wave sender or receiver comprises a base plate, a diaphragm, a plurality of 45‹ X-cut crystals of the Rochelle salt type mounted between and in contact with the base plate and diaphragm, the two crystal faces which are in contact with the base plate and diaphragm being defined by a dimension which does not change due to piezo-electric activity and by a shorter dimension which does change due to piezo-electric activity when the element is subjected to an alternating electric field, and means for subjecting the crystals to an alternating electric field. In Figs. 1 and 2 two sets of 45‹ X-cut crystals 11 are mounted radially on edge between a base plate 21 and a diaphragm 22. The dimension at right angles to the base plate has the maximum piezo -electric displacement so as to impart the most drive to the diaphragm. The faces in contact with the base and the diaphragm are defined by a long X dimension along which there is no piezoelectric displacement, and a short dimension along which there is some displacement. This gives only a small relative displacement between the crystal surfaces and the base and diaphragm thus reducing frictional heat and spurious frequency effects. The ends of the crystals are provided with electrodes. The outermost and innermost electrodes are in contact with circular spring contacts 32, 33 connected to a lead 34, while the intermediate ends of both sets of crystals are connected to a serrated spring contact 35 connected to a lead 36, thus placing all the elements electrically in parallel. Leads 34, 36 are formed into a cable 37 which passes through base 21 in watertight manner. The diaphragm 22, crimped annularly at 26, 27, is fastened to the rim 30 and raised part 28 of base 21 to form a sealed enclosure suitable for subaqueous signalling. In the modification shown in Fig. 4, the crystal elements 11 are arranged radially in slots in a composition spider 53 of low elasticity such as sponge rubber or cork. The casing is closed by a thick rubber diaphragm and the whole assembly is filled with castor oil. The spider 53 absorbs vibrations radiated from the side faces of the crystals, and a layer of cork or sponge rubber 68 absorbs radiation from the lower face of the casing, so improving the disectional characteristics. In a further modification, Figs. 5 and 6 (not shown), the crystals are mounted in four parallel rows to form a square block in contact with the diaphragm. The casing is air-filled, and a tube of silica gel is provided to absorb condensation and to prevent dehydration of the crystals. In a further modification, Figs. 7 and 8 (not shown), the crystals are arranged in two parallel rows in a long thin casing to give desired directional characteristics. Specification 592,222 is referred to.
Patent GB-191339-A (GB)
Title: Improvements in variable speed cigar wrapping mechanism
IPC: A24C1/30
Filed: 1922-07-04
Abstract: 191,339. Marks, E. C. R., (International Cigar Machinery Co.). July 4, 1922. Cigar-making machines.-The speed of the bunch-rotating rolls may be varied to produce an even wrapping of cigar-bunches of different contours. A shaft 15 is driven through pinions 10, 12, 14 from a shaft 9 and has pinions 16, 21 fast and loose respectively on it. The pinions 16, 21 engage respectively pinions 17, 20 connected together and mounted loosely on a spindle 18 carried in a U-shaped bracket 19 pivoted to the shaft 15. The pinion 21 drives through gearing 22, 24 a pinion 27 on the main roll shaft and pinions 40 drive subsidiary rolls which are rocked about centres 37 to engage or disengage the bunch by cam-actuated links 41 connected to bell-cranks 36. The bracket 19 is held by a spring 42 and is rocked about the shaft 15 by a link 44 pivoted to a link 46, thus causing an acceleration or retardation in the speed of rotation of the rolls. The link 46 is actuated through bevel-gearing 48, 49 by a crank 51 having a cam bowl 52 engaging a cam track on a drum 61. The, cam track is formed by two flexible steel rings 54 gripped in slots 55 formed in blocks 56, the position of which may be laterally adjusted by screws 59 to vary the shape of the cam track.
Patent GB-188365-A (GB)
Title: Improvements in brakes for vehicles
IPC: F16D65/22
Filed: 1921-07-07
Abstract: 188,365. Imray, O. Y., (Timken-Detroit Axle Co.). July 7, 1921. Band.-Internal brake bands are expanded by toggle links the joint of which is off-set outwardly with respect to the pivotal points of the links with the band so that the pressures applied to the ends of the band by the brake are substantially in a tangential direction. The toggle links 22 are connected at 24 to lugs 21 on the ends of the band 17 and are straightened by links 25 connected to a crank arm 26 on a rock shaft 27 mounted on the shield plate 12. The pivot 23 is offset outwardly with respect to the pivots 24. The shaft is actuated bv the arm 29 and rod 30. A spring 31 hooked on to the toggle links serves to break the toggle for disengaging the band and also to take up looseness in the pivots 24. Disengagement of the band is assisted by springs 34 attached to the plate 12 and to eyes 37 passing through slots in brackets 33 fixed to the plate 12. The band is held from rotation with the drum when expanded by the engagement according to the direction of rotation of one or other of the lugs 20 on the ends of the band the stops 19 on a plate 18 fixed to the plate 12. The slight rotational movement of the band before engagement with the stops tends to straighten the toggle and thus to increase the action of the brake. The plate 12 is shown riveted to flanges on the axle casing of a motor vehicle.
Patent GB-885474-A (GB)
Title: Improvements relating to aerial systems
Inventor: GRIFFITHS GEORGE RAYMOND
IPC: H01Q19/04
Filed: 1959-05-30
Abstract: 885,474. Aerials. MEADOW-DALE MANUFACTURING CO. Ltd. Aug. 24, 1960 [May 30, 1959 ], No. 18492/59. Class 40(7). A foldable aerial system comprises a bracket which carries a pair of pivotally mounted arms and a boom, the boom having a dipole aerial mounted thereon. Each arm carries conductors arranged on either side of the arms such that, when the aerial system is erected, the conductors lie on a parabola which has the aerial at its focus. The Figure shows a plan view of the aerial system. The arms 10 are pivoted so that they may be folded to lie in the chain dotted position parallel to the boom 7. The bracket 4 interconnects the boom and arms. Conductors 14, 15 are mounted as shown, and these, together with a further conductor 21, all lie on a parabola. A dipole aerial 8 is mounted on the boom and is at the focus of the parabola. Specification 875,367 is referred to.
Patent GB-590945-A (GB)
Title: Alarm for flow meters and other instruments
IPC: G01P13/00
Filed: 1944-09-27
Abstract: 590,945. Indicating-instruments. FISCHER & PORTER CO. Sept. 27, 1944, No. 18498. Convention. date,. Oct. 18, 1943. [Class 106 (iv)] [Also in Groups XXIX and XXXVII] Indication transmission means, for use with a flow-meter or other instrument sensitive to a variable condition, comprises a magnet, means connected to the instrument for moving the magnet through the variable condition, switch means including a magnetically-actuated make- and-break element adjacent the path of travel of said magnet and an auxiliary magnet having one pole adjacent said element, the poles of said auxiliary magnet alone having insufticient strength to actuate said element, but with the aligned similar pole of the first - mentioned magnet able to do so. In the form shown, a rotameter comprises inlet and outlet pipes 22, 19 and a transparent metering tube 10 containing a float 27 from which a tube 29 extends into a transparent tube 24. The tube 29 encloses a large magnet 30 at its closed end, with its south pole downwards, provided with a fluid-tight seal 31. Mounted on the tube 24 is a mercury switch 33, in which an arm 37 supports one end of a hair spring 38, the other end terminating in a plate 39 of magneticallysensitive material, from the bottom of which extends a wire 40 forming an electrode 41 and supported by a looped rod 42 depending from the arm 37. The electrode 4J is normally not in the mercury bead, but enters it, as in Fig. 2, when the plate 39 is moved to the left, by sufficient magnetic attraction, to close an electric circuit actuating an alarm. The plate 39, when indicating insufficient flow-rates, is in line with the north poles of two small magnets 46, located so that in the predetermined minimum position of the float 27 all north poles are aligned, and attract the plate 39. On increase of rate-of-flow, the magnet 30 rises and the spring 38 moves the plate 39 and electrode 41 to the normal position. The mercury switch can also be located at the top of the tube to indicate similarly excessive flowrates. In a modification, the magnets 46 are reversed. In place of, or in addition. to, the alarm, a valve means may be incorporated into the circuit, to adjust the flowrate. In a further modification the tubes 24 and 29 extend upwardly.
Patent GB-1036347-A (GB)
Title: X-ray spectrometer
IPC: G01N23/207
Filed: 1964-05-04
Abstract: 1,036,347. Spectrometers. COMPAGNIE D'APPLICATIONS MECANIQUES A L'ELECTRONIQUE, AU CINEMA ET A L'ATOMISTIQUE, (C.A.M.E.C.A.). May 4, 1964 [May 9, 1963], No. 18507/64. Heading H5R. In a monochromator X-ray spectrometer, the analyser crystal M (Fig. 4) is arranged to be displaced so that its centre moves along a straight line Ox, while means are provided to keep the crystal tangential to a focal circle passing through the X-ray source O and the centre of the crystal, the distance between the centre of the crystal and the entrance slit of a detector being maintained substantially constant. The source O may be a specimen excited by electron bombardment to emit X-rays towards a crystal of the Johann or Johansson type. The radius of curvature of the diffracting planes of the crystals is 2R, where R is the radius of a focal circle, centre C, upon whose circumference, at a point N, are focused the X-rays reflected from the crystal. In order to maintain the crystal at a tangent to the focal circle, when the crystal is being displaced in a direction Ox, an arm B is provided, guided by a pivotally mounted roller P which moves along a rectilinear guide G, such that the arm B makes a constant angle a with the tangent at M to the circle. In order to correctly position the detector S (Fig. 3, not shown), which may be a proportional or scintillation counter, a second arm B 1 , guiding the detector and pivoted to the arm B is necessary. The distance between the crystal and the slit of the detector is kept fairly constant, as an average of the distances at extreme positions of M along the Ox axis. The arm B 1  is pivoted at M and guided by roller P 1 , moving in a curved guide G 1 . The crystal is displaced along the Ox axis by means of a worm drive. The arm B 1  guiding the detector S may be pivotally mounted at a point on the arm B some distance from M (Figs. 5a, 5b, not shown) to make the hinge simpler and the guide G 1  may be rectilinear. The guides G 1  and G are formed in a flange integral with the spectrometer frame.
Patent GB-332367-A (GB)
Title: Improvements in joint for structural steel columns and girders
IPC: E04B1/24
Filed: 1929-06-15
Abstract: 332,367. Larkin, J. A. June 15, 1929. Ironwork, constructional.-In order to secure girders to columns, gusset plates are provided either passing through the column web or attached to the flanges thereof, the arrangement being such that the gusset plates form an integral part of the section of the columns. The form shown comprises a built-up column. slots 20a being provided in the web and flanges for the passage of a gusset plate 22 with projecting ends 22a. Furthey gusset plates 27 with projecting ends 27a lie along the inner faces of the flanges with their upright inner edges abutting against the faces of the gusset plate 22, and filler plates 28, 29 are disposed above and below these gusset plates. Securing angles 30 are disposed along the angles of the web and further filler plates 32 are disposed along the flanges. Brace plates 33, 34 are then placed along the joints between the angle flanges and the flanges and filler plates and are secured to the column by rivets. The webs of the girders abut the ends of the gusset plates and the joints are made by riveted butt-straps 25. In the case of a column of sectional metal, the cross gusset plate 44 passes through slots in the flanges so disposed that the gusset plate has one face co-planar with the web while the auxiliary gusset plates are positioned by filler pieces 48 and secured by butt-straps 49, Fig. 15.
Patent GB-880837-A (GB)
Title: Sanitary glove and method of making same
IPC: A61B19/04
Filed: 1959-06-01
Abstract: 880,837. Gloves. GALEN ENTERPRISES Inc. June 1, 1959 [March 3, 1959], No. 18544/59. Class 141 A glove is formed of an impervious film of fused plasticised polyvinyl chloride &c. having a relatively fine uneven outer surface 17 and a relatively coarse uneven inner surface 18. The average film thickness is 2 to 3 mils and the uneven surface 18 is produced by including in the dispersion, solution or latex a number of particles of resin or sand, pumice &c. of 5 mils in diameter. In Fig. 1, the glove comprises thumb- and finger-stalls 11-13 extending from a skirt portion 15 which flares outwardly from the base of the stalls to provide a loose covering for the metacorpel portion of the hand. The ratio of the peripheral dimension of the face edge of the skirt portion to the length of this portion is between 3:1 and 11:1. The glove may have a greater or smaller number of finger-stalls than those shown in Fig. 1 and is provided with an annular rib 16 on its outer surface.
Patent GB-1143132-A (GB)
Title: Packaging machines
IPC: B65B19/04
Filed: 1966-04-28
Abstract: 1,143,132. Endless conveyers; packaging-machines. H. H. FOCKE, L. UHINK and H. PFUHL, [trading as FOCKE & PFUHL]. 28 April, 1966 [28 April, 1965; 13 April, 1966], No. 18610/66. Headings B8A and B8C. Cigarettes are fed by a feed wheel 12 on to an endless conveyer having deflectable flights 22 which are pushed out of engagement with the associated cigarette when the latter is backed up against the column of preceding cigarettes. When the cigarettes extend back as far as a pivotable stop 17, the latter is projected by a solenoid operated spring release 20 under the control of an electronic counter 16. The oncoming cigarettes now back-up against the stop 17 while the previous cigarettes are fed to a tray 11 by a pusher (15) (Fig. 3, not shown). The speed of the drive of a motor M8 (Fig. 7) of a drive shaft A7 of a subsequent packing machine (not shown) is controlled by electronic means fed by pulsegenerators G2, G3, and G4, on the conveyer, and a pulse generator G1 actuated by a disc J5 on the shaft A7 of the motor M8. The electronic means controls clutches K12, K13, in the drive of a potentiometer P11 which energizes an induction clutch JK6 in the drive of the motor M8. Thus the latter is slowed down (if necessary to zero) when the pulse rate of G4 falls, and increases when the pulse rate of G3 rises. In a modification (Fig. 5, not shown) the endless conveyer is replaced by a rotary conveyer. In a further modification (Figs. 8-10, not shown), the endless conveyer is again replaced by a rotary conveyer in the form of a drum (65) on which the cigarettes are held by vacuum means, the effect of which may be varied by the setting of an adjustable masking sector (79). The drum (65) feeds the cigarettes on to an endless conveyer (66) from which they are transferred to a tray (63).
Patent GB-120477-A (GB)
Title: Improvements in and relating to Power Transmission Toothed Gearing.
Inventor: WINGFIELD BERNARD ROBERT
IPC: F16H3/00
Filed: 1917-12-15
Abstract: 120,477. Wingfield, B. R. Dec. 15, 1917. Force-feed lubricating for reversing-gearing combined with turbine double reduction gearing for ship propulsion &c. Fluid supplied to hydraulically-actuated plate clutches i, i<1>, i<2> by passages k, u serves also to lubricate the bearing of the toothed wheel c or d which is running idly, to which it has access through a radial passage q<1> or q<2>. Fig. 2 shows a valve v controlling the supply of pressure fluid from inlets y<1>, y<2> to the passage u or k. To maintain lubrication when the fluid is cut off from both passages, as shown, and both wheels are running idly, fluid at a lower pressure is admitted through a check valve v<2> when the pressure in a pipe z falls below a certain limit. The low-pressure fluid is delivered through a pipe u<3> and exhausts through a pipe u<4>. A relief valve v<1> is provided. Specication 104,458, [Class 80 (i), Gearing, Belt &c.], is referred to.
Patent GB-1368509-A (GB)
Title: Exhaust system for an internal combustion engine
IPC: F01N3/28
Filed: 1973-04-24
Abstract: 1368509 Treating exhaust gas ROVER CO Ltd 24 April 1973 [22 April 1972] 18775/72 Heading F1B Catalyst unit for an I. C. engine exhaust system comprises a container 11 having a gas inlet 12 and a gas outlet 13, at least one catalyst carrier 14 and mounting means disposing the or each carrier within the container and consisting of one or more hollow metallic gaskets 15 filled with a gas and hermetically sealed to provide a cushioned support for the carrier. In a modification the gaskets extend around the corners of the carrier(s) to form a seal between the end faces of the carrier and container. The gaskets are filled with an inert gas under pressure. The catalyst carrier comprises a ceramic matrix supporting a reducing catalyst.