baber/WOPTO huggingface dataset:
Patent GB-711670-A (GB)
Title: Process for improving hydrocarbons boiling in the gasoline range
IPC: C10G59/02
Filed: 1952-06-11
Abstract: Hydrocarbons boiling in the gasoline range are subjected to a catalytic treatment in the vapour phase and in the presence of hydrogen at 30-100 atmos. and 450-500 DEG  C. in two stages, the first in the presence of a dehydrogenating catalyst comprising either platinum or nickel-tungsten-sulphide, as such or on a carrier, other than one activated with acid, to dehydrogenate any 6-membered ring naphthenes present, the products then being subjected to a hydrogenating cracking using nickel - tungsten - sulphide on acid - activated alumina.  If desired, a further dehydrogenation stage may follow.  The carrier in the first stage may be alumina and may contain an alkali metal, e.g. a potassium compound.  Activation of the carrier for the second stage may be effected by treating with hydrogen halide or a substance producing it, e.g. hydrogen fluoride, benzene fluoride, ammonium fluoride or tert. butyl chloride.  Space velocities are 0.5-5 kg./l./hr. and quantities of hydrogen 3-10 mols./mol. gasoline.  An example compares the two-stage treatment of a crude petroleum fraction boiling at 113-191 DEG  C. with single stage treatments.  The first catalyst is a commercial Ni-W sulphide, the second precipitated alumina treated with HF and mixed with precipitated Ni-W sulphide (see Group 3).ALSO:A catalyst for reforming gasoline hydrocarbons comprises a nickel-tungsten-sulphide on acid-activated alumina.  Activation may be effected with a hydrogen halide or substance producing it, e.g. hydrogen fluoride, benzene fluoride, ammonium fluoride or tert. butyl chloride.  In an example, precipitated aluminium hydroxide is treated with HF solution; and mixed with the precipitate obtained by adding Ni (NO3)2 solution to an ammoniacal solution of (NH4)2 WS4 saturated with H2S, and acidifying with H2SO4 to pH 1.5. The alumina : F : W : Ni ratio is 100 : 0.3 : 26.9 : 4.3.
Patent GB-807197-A (GB)
Title: Rotary positive displacement device for liquids
IPC: G01F3/10
Filed: 1956-05-11
Abstract: 807,197. Rotary motors, pumps and meters. LIQUID CONTROLS CORPORATION. May 11, 1956 [July 19, 1955], No. 14738/56. Addition to 754,984. Class 110 (2). A rotary motor, pump or meter, as claimed in the parent Specification is provided with at least three displacement rotors D or at least three concave peripheral recesses 142 in the rotary abutment B to receive the displacement rotors successively therethrough. The device incorporating three displacement rotors may be used in conjunction with a rotary abutment provided with two, three or four concave recesses see Figs. 4, 2 and 3 respectively, (not shown). Dimensions are given in the Specification.
Patent GB-973217-A (GB)
Title: Improvements in or relating to implements for the lateral displacement of crop or like material lying on the ground
IPC: A01D78/00
Filed: 1960-11-22
Abstract: The subject-matter of this Specification is included in Specification 973,215 but the claims differ.  Specifications 931,423, 973,216 and 973,218 also are referred to.  Reference has been directed by the Comptroller to Specification 852,463.
Patent GB-277123-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J19/34
Filed: 1926-06-12
Abstract: 277,123. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). June 12, 1926. Addition to 255,320. Vacuum tubes. - In electron-discharge tubes having a shield 17 surrounding the leading-in wires to the inner electrodes and serving to prevent corona discharges between the anode 11 and the supporting structure of the other electrodes. as described in the parent Specification, the shield is sealed by fusing it to a stem 16 of the vitreous envelopes. The seal may be of the ordinary kind shown in Fig. 1, or the shield may be provided with projections 40, Fig. 3, which are fused to the glass stem 16. A wire grid 22 may be mounted on rods 21 carried by a ring 19 having a groove into which the end of the shield 17 is fixed, the cathode supporting-rod 27 passing through the ring and being attached to a metal disc 26. This disc is carried by a rod 25 clipped to a glass extension 23 of the stem 13, and nearly closes the end of the shield 17 to prevent its interior from being overheated. In the case of a two-electrode tube, the ring 19 is replaced by a disc 38, Fig. 2, which completely closes the shield 17 and carries the cathode. Long leading- in wires 31 carried by the disc 26 or the disc 38 are connected to outer leading-in wires 33 by flexible lengths of copper braid 32. The wires 33 are sealed into metal thimbles 15 either directly solder 34, or by screwing them into tapped recesses in the thimbles and running solder into the joints during the preglowing of the copper to remove occluded gases. The anode is fused to the glass envelope as described in Specification 202,047.
Patent GB-769058-A (GB)
Title: Improvements in or relating to flexible bag
Inventor: HOEPPNER ARTHUR D
IPC: B65D33/24
Filed: 1955-05-24
Abstract: 769,058. Paper &c. bags. BEMIS BRO. BAG CO. May 24,1955, No. 14926/55. Class 94(2). The closure flap 6 of a flexible bag is hinged to a wall 3, and has its side edges 7 secured to the bag side seams. The flap may lie against the wall 3 clear of the bag mouth or, by turning inside out the pocket it forms with the wall 3, may be caused to enclose the bag mouth as in Fig. 10.
Patent GB-679458-A (GB)
Title: Method of producing draw string bags
IPC: B65D33/28
Filed: 1951-06-25
Abstract: 679,458. Bags. MILPRINT, Inc. June 25, 1951 [March 1, 1951], No. 14985/51. Classes 94(ii) and 133. In a method of producing bag-like containers from sheets of flexible material, a flat open-mouthed bag is formed by superimposing a pair of sheets 10, 11 of a heat sealable material such as rubber hydrochloride and all but one edge 14 are sealed, the corners are removed along diagonal lines to provide flaps 16, 17 on the sheets 10, 11, and a draw-string 18 is positioned about the end flaps 16, 17, which are folded outwardly and sealed to the bag walls to retain the cord.
Patent GB-708489-A (GB)
Title: Improvements relating to cranes and the like
IPC: B66C23/84
Filed: 1952-06-13
Abstract: 708,489. Cranes. KOEHRING CO. June 13, 1952 [Aug. 9, 1951]. No. 14989/52. Class 78 (4) [Also in Groups XXI and XXXI] A mounting for the slueimg platform of a crane comprises a substantially rectangular plate forming the main frame end having bracing members 6, 7 cut out therefrom and extending upwardly and welded to a top plate 15 and to a central pivot 16. A gear case 14 is secured to the braces and to a flange 32 supporting bearings 36 for the driving shaft and the cover 34 for the gear case. Bearings 12 are mounted on opposite sides of the gear case for the shaft to transfer the drive to the tracks. A roller path and ring gear 17 is welded to the top plate. Bosses 26 are welded to the main frame for the axles. Vertical webs extend between opposite bosses and are welded to the bosses, the braces, the side and end plates 18, 19 and to the top plate.
Patent GB-333307-A (GB)
Title: Improvements in or relating to incandescent mantle mountings
IPC: F23D3/00
Filed: 1929-05-14
Abstract: 333,307. Imber, J., (Davis, C. W.). May 14,1929. Mantle supports.- An upright mantle is suspended by a metal member m from a wire loop e carried by a ring b, the top of the loop being bent to form shoulders p for preventing vertical displacement of the mantle and a sheet metal ring g being provided for preventing lateral displacement. The ends of the wire e are secured in sockets h as by notching or indenting the sockets and the latter are clamped to lugs f, d on the rings g, d by means of flanges i, j. The mantle head is reinforced by a metal lining l to prevent damage to the mantle by the shoulders p. The ring b may form the upper section of a burner cone.
Patent GB-554554-A (GB)
Title: Improvements in or relating to gramophones and the like
IPC: G11B3/08
Filed: 1941-09-29
Abstract: 554,554. Positioning gramophone pick-ups. SHAW, M. N. H., and METCALFE, C. Sept. 29, 1941, No. 15104/42. Divided out of 554,530 [Group XXXV]. [Class 40 (ii)] In gramophones adapted to play records of different sizes, the pick-up is automatically positioned on the record in accordance with the size of the record by an arrangement of stops 3, 4 on levers 5, 12, each stop being independently adjustable, and at least one of the stops being adapted to be moved in and out of operative position. The stop lever 5 is adjusted about its pivot 6 by means of a lug 7 projecting above the motor board through a slot 8, and is clamped in adjusted position by a screw 9. The stop lever 12 is pivoted at 13 on an arm 14 pivoted at 15. The operative position of the stop is adjusted by an adjustment of the arm 14 about its pivot 15 by a lug 16 projecting above the motor board through a slot 17. The arm is clamped in adjusted position by a screw 18. The stop lever 12 is pivoted at 21 to a link 22 by means of which the stop lever 12 can be moved to place the stop 4 in or out of operative position. When a 10 inch record is to be played, the stop 4 is, as shown in full lines, out of the path of a lug 46, Fig. 2, moving in with the pick-up arm, so that this arm moves in until the lug 46 abuts the stop 3; the pick-up is then over the edge of the 10 inch record. When a 12 inch record is to be played, the stop 4 is automatically moved to the operative position shown in dotted lines and causes the pick-up to stop over the edge of the 12 inch record. The automatic setting of the stop 4 is performed by the link 22, which may be controlled by the trip device described in Specification 554,553. The pick-up arm (not shown) is carried by a spindle 40, Fig. 2, and can be raised and lowered in known manner by a central rod 41. A drive arm 42 is fast with the spindle 40 and has a projection 43 which can move between a reset lever 44 and the end 47 of a drive lever 45 while a record is being played. A follower arm 60 frictionally gripped to the pick-up arm co-operates with cams on the turntable spindle as described in Specification 554,530 to form a tap-tap mechanism adapted to set the record changing mechanism in operation at the end of the playing of a record. When this occurs, a link 51 controlled by a cam of the mechanism turns the drive lever 45 clockwise, the projection 43 is engaged by the end 47 of the drive lever; and the pick-up arm which meanwhile has been lifted is turned outwards ; the projection 43 also engages the reset lever 44 and turns this clockwise. After a fresh record has been fed, the cam mechanism releases the link 51, a spring 48 then turns the reset lever 44 counterclockwise, and this acting on the projection 43 turns the pick-up arm inwards until the lug 46 of the reset lever 44 meets the stop 3 or 4 according to the size of the record. After this, the pick-up is lowered on the record.
Patent GB-248975-A (GB)
Title: Improvements in the manufacture and production of arsenic preparations
IPC: C01G28/00
Filed: 1925-06-10
Abstract: 248,975. Johnson, J. Y., (Badische Anilin & Soda Fabrik). June 10, 1925. Insecticides; fungicides.-Arsenic preparations containing the yellow modification of elementary arsenic are obtained by distilling volatile solvents, e.g. carbon bisulphide or benzene, over arsenic heated to a red heat and condensing the vapours. The solutions obtained may be employed directly as insecticides or fungicides, or they may be emulsified in water alone or with a protective colloid. For example, they may be mixed with a 33.5 per cent soap solution, or with Turkey red oil, or with saponine, or lysalbinic acid salt solutions, to form a cream-like product which gives with water a milky liquid ready for use. Alkylated naphthalene sulphonic acids or their salts may also be employed as emulsifying agents. The volatile solvents may be expelled from the solutions, e.g, by a, current of air, and colloidal solutions containing yellow arsenic obtained.
Patent GB-777123-A (GB)
Title: Improvements in or relating to waveform generators employing transistors
Inventor: MORGALLA NORBERT WALTER
IPC: H03K3/26
Filed: 1954-05-22
Abstract: 777,123. Transistor generating circuits. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. May 17, 1955 [May 22, 1954], No. 15130/54. Class 40(6) In a circuit including two cross-connected transistors TRA, TRB, Fig. 2, at least one reactive component C is connected in the circuit in such a position that current flow through one transistor enables energy to be stored in the component to cause a sudden transition in the conducting condition of the transistors, whereupon the stored energy is released to cause a second transition. Assuming the capacitor C to be fully charged, transistor TRA is conducting and TRB cut-off. The capacitor C discharges until transistor TRB commences to conduct, the fall in collector potential being transmitted to the base of transistor TRA. Transistor TRA cuts off, the rise in collector potential being fed to the base of transistor TRB which conducts and commences to re-charge capacitor C. Capacitor C re-charges over the emitter-collector path of transistor TRB until the emitter current commences to fall, when, due to the regenerative action of the circuit transistor TRB cuts off and transistor TRA conducts again to complete the cycle. In a modification Fig. 4 a further capacitor C2 is connected between the collector of transistor TRB and the emitter of transistor TRA. By suitable choice of capacitors C1, C2 it is stated that a sine wave generator may be produced.
Patent GB-501389-A (GB)
Title: Improvements in or relating to apparatus for performing chemical reactions
IPC: B01J8/06
Filed: 1938-05-20
Abstract: 501,389. Heat - exchangers. METALLGES. AKT.-GES. May 20, 1938, No. 15167. Convention date, June 16, 1937. [Class 64 (iii)] [Also in Group III] Apparatus for catalytic reactions comprises a spiral plate heat - exchanger in which one or more spiral passages 2 contain the catalyst and constitute the reaction space while intervening spaces 3 contain the heat-exchange fluid. The reaction spaces are narrow and their width may'be maintained by inserted cross-pieces or by raised projections on the walls. They may also contain heat-conducting grids &c., or conductive materials may be mixed with the catalyst. For high-pressure reactions, overflow valves or other control means may be used to maintain substantially equal pressures in spaces 2 and 3 and the whole may be enclosed in a pressureresisting shell. The domed ends 4, 5 of this shell may communicate with the passages 2, 3 by holes 14, 9 in the end-plates 7, 6 and so serve as inlet conduits, the outlets 10, 15 being disposed at the centre of the spirals.
Patent GB-130827-A (GB)
Title: An Improved Composite Fabric.
IPC: D06N3/00
Filed: 1918-09-18
Abstract: 130,827. Beardmore & Co., W., and Meadowcroft, N. Sept. 18, 1918. Compound fabrics for use in making fiexible gas containers &c. comprise a base of cotton or other fabric of fine texture and a layer of goldbeater's skins secured to the base with an adhesive composed of gelatine, glycerine, and vinegar or dilute acetic acid. Suitable proportions of these ingredients are gelatine 37 per cent, glycerine 23 per cent, and vinegar or dilute acetic acid 40 per cent, one part by weight of this mixture being heated with 3 parts water to give a solution ready for use. As this solution thickens and becomes unfit for spreading when cold, the ingredients are preferably made up with only sufficient water to produce a jelly when cold, the jelly being dissolved as required for use in the proportion of 1 lb. jelly to 2¢ pints of water, which is heated in a vessel. Alum or aluminium acetate may be added to this solution as a preservative against damp in the proportions of 30 grammes powdered alum or 40 fluid drachms aluminium acetate to a solution made from 1 lb. of jelly. The damp preservative may be omitted from the solution, and spread over the unskinned side of the fabric after the skins have been laid. A light coat of varnish is preferably spread over the skinned side of the finished fabric.
Patent GB-480074-A (GB)
Title: Electron discharge apparatus
IPC: H01J19/82
Filed: 1937-06-01
Abstract: 480,074. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. June 1, 1937, No. 15220. Convention date, June 30, 1936. [Class 39 (i)] An electron-discharge apparatus comprises a pair of electrode units, each including a cathode, a control electrode and an anode, an electrode of one unit being formed with a portion thereof adjacent -to a portion of an electrode in the other unit to form a condenser therewith, means being provided whereby the capacity of the condenser can be adjusted as desired. The two units may each be mounted in a separate envelope 10 having plane parallel walls 13, and each control electrode 15 is provided with an extension 21 which is adjacent to and parallel with an extension 23 on the anode 22 of the other unit. Metallic or dielectric plates 29 slidable in supports 31 may be adjustably inserted between the walls 13 thus varying the capacity of the condensers formed. In a modification the two units are mounted in a common vessel and a narrow flat envelope is mounted between the grid and anode extensions, liquid, such as mercury or oil, or gas being introduced into this envelope to vary the capacity. The gas may be so chosen as to correct for any change due to temperature in the inter-electrode capacity of the untts. The extensions 23 ... 25 on the anodes serve as cooling ribs. The two units may be used in a push-pull amplifier the condensers formed by the' extensions 21, 23 serving as neutralizing condensers for the inter-electrode capacities of the units.
Patent GB-218812-A (GB)
Title: Jacks
IPC: B66F1/02
Filed: 1923-06-11
Abstract: 218,812. Ilsemann, F. June 11, 1923. Jacks.-A ring 4 having a conical cavity 11 surrounds the lifting pillar 3 and is pivoted to a member 7 which is pivotally mounted on the casing and receives the lever 10. Friction rollers 12 mounted on the cavity 11 bear against the pillar 3 when the lever is depressed and cause the pillar to rise. A similar arrangement of rollers 14 prevents running back of the pillar, but these rollers are put out of action by turning a cam ring 19 so that the ring is no longer forced downwards by pins 16<a> against the resistance of the springs 15. The rollers 12 can be disengaged by raising the lever so that they are forced down on to projections 17<a> on the top of the casing containing the rollers 14. Reference has been directed by the Comptroller to Specification 7857/88.
Patent GB-674486-A (GB)
Title: Improvements in and relating to yarn winding apparatus
IPC: B65H63/036
Filed: 1950-06-19
Abstract: 674,486. Spindle stop-motions. CELANESE CORPORATION OF AMERICA. June 19, 1950 [June 23,' 1949], No. 15270/50. Classes 120(ii) and 120(iii) Apparatus for the simultaneous winding of a plurality of yarn packages comprises braking means for stopping the rotation of the packages being wound and means for applying the braking means automatically to the packages in succession at predetermined intervals. Each spindle 11, furnished with a bobbin 12, is provided with a brake operable by a handle 13. Hingedly attached to a support 29 are levers 27, one for each spindle brake, the levers 27 being operated in timed sequence by a traveller 15 moved by a chain 14 driven through reduction gears 23-26 by a motor 21. When the traveller 15 has been carried the length of the group of spindles, it contacts a limit switch 30 to stop the motor 21. A further traveller 16 attached to the chain 14 performs the next cycle of operations. The motor 21 is controlled through a timer 31 which operates a relay 33 to energize the starter 34. At the same time, pilot lights 36, 37 and a horn 38 draw the operative's attention to the fact that doffing is about to begin, and an interval timer 39 is energized. If the operative does not operate the switch 41 within a certain time, the interval timer 39 energizes warning lights 42, 43 and sounds a more powerful horn 44.
Patent GB-1500996-A (GB)
Title: Analogue/digital or digital/analogue converters
IPC: H03M3/02
Filed: 1975-04-14
Abstract: 1500996 Delta modulation L M ERICSSON PTY Ltd 14 April 1975 15301/75 Heading H3H In a companded delta codec, the step size is adjusted in dependence on the average of the high slope regions. In an encoder, Fig. 1, logic 27 controls a current pulse generator 28 to generate a positive current if the last four delta bits are 1111 or 0000 and a much smaller negative current otherwise. The resulting voltage on capacitor 30 is fed via an antilog converter 31 to a current pulse amplitude modulator 33 which receives polarity signals from the input stage of the register 24. Integrator 34 forms the feedback signal 22 to comparator 20. The effect is that the step size can increase at an attack rate of À7dB/clock pulse (e.g. 64 kHz) or otherwise between À25 and 3dB/clock pulse, but the decay rate is between <SP>1</SP>/ 3  and <SP>1</SP>/ 500  of the attack rate, preferably about <SP>1</SP>/ 100 . A corresponding decoder (Fig. 2, not shown) has a filter (36) instead of comparator 20. Some theory and figures are given.
Patent GB-684178-A (GB)
Title: Improvements in or relating to grass-cutting and like machines
IPC: A01D34/66
Filed: 1950-06-19
Abstract: 684,178 8 Grasscutting machine. HAYTER, D. R., HAYTER, W. J., and HAYTERS, Ltd. March 8, 1951 [June 19, 1950]. No. 15317/50. Class 6 (iii). A grass-cutting machine of the type comprising a wheeled frame and a bladed cutting rotor carried on a vertical shaft rotatably mounted in the frame is characterised in that the rotor comprises a plate 12 provided with triangular blades 13 arranged horizontally at a level lower than and parallel to the central and major part of the underside of the plate, a fixed guard 19 surrounding the vertical shaft. As shown, three adjustably-mounted rotors are provided and are driven by belt gearing 33 from a shaft 35 driven from a tractor or alternatively from a power unit mounted on the machine. The rotors may be mounted in a two-wheeled frame provided with handlebars and a power unit.
Patent GB-164354-A (GB)
Title: Universal junction-box for electric mains and protecting cover for terminals, cut-out switches, etc
IPC: H02G3/08
Filed: 1921-06-03
Abstract: 164,354. Tempini, G. June 9, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings referred to in Specification, but not filed. Boxes and cases.-A protective casing has movable sides by means of which connections of any desired character may be made. The box is adaptable to surface and sunk wiring. The removable side sections are fixed in grooves in a frame or vice versa and screws to which seals may be applied secure the sides in position, or the screws may be dispensed with and the sides secured by the aid of the cover.