baber/WOPTO huggingface dataset:
Patent GB-703796-A (GB)
Title: Improvements in or relating to methods and apparatus for abrading articles with a single-curvature convex surface
Inventor: WHITEHEAD FREDERICK WILLIAM
IPC: B24B21/00
Filed: 1951-10-23
Abstract: 703,796. Grinding and polishing. BRISTOL AEROPLANE CO., Ltd. Oct. 23, 1952 [Oct. 23, 1951], No. 24790/51. Class 60 A method of abrading an article 12 with a single-curvature convex surface, e.g., a turbine or compressor blade for gas turbine engines, comprises applying the article simultaneously to a plurality of abrasive members 7, 8 which move laterally of the convex surface and engage the surface each along separate surface generating lines thereof and moving the article 12 to transfer the abrasive action of the members 7, 8 to successive surface generating lines. In Figs. 1 and 2, members 7 are narrow abrading bands passing round pulleys 9, 10 and members 8 are narrow abrading bands passing round pulleys 10, 11 ; those surfaces of one set of bands which are engaged by the blade move inwardly towards the throat 13 and those of the other set of bands outwardly away from the throat. The pulleys may be adjustable so as to adjust the angle between the two sets of bands. The blade is rotated, preferably manually, about the axis 14 and simultaneously moved lengthwise to ensure that the entire convex surface of the article is worked upon. The two sets of bands 17, 18, Fig. 3, may pass round pairs of pulleys 19, 20 and 21, 22 ; the bands preferably move inwardly towards the throat. The endless bands may be replaced by polishing discs, grinding wheels or a combination of grinding discs, wheels and endless bands.
Patent GB-1216595-A (GB)
Title: Dimerisation of olefins
IPC: C07C2/32
Filed: 1968-05-24
Abstract: 1,216,595. Dimerizing olefins. BADISCHE ANILIN- & SODA-FABRIK A.G. 24 May, 1968 [27 May, 1967], No. 24827/68. Heading C5E. Olefins are dimerized or co-dimerized at 60- 200‹ C. and at a pressure of from atmospheric to 300 atmospheres in the presence of an alkali metal and an organic compound having one or more carboxylic ester and/or keto groups, as catalyst. Examples of suitable compounds are ethyl acetate, diethyl malonate, tert.-butyl propionate, diethyl-1,4-cyclohexane dione-2,5-dicarboxylate, acetone, acetophenone, benzophenone, benzylacetone, acetylacetone, acetonylacetone, benzoylacetone and cyclohexanone, but it is preferred to use chelate complexes of #- dicarbonyl compounds and heavy metals e.g. nickel (II) acetylacetonate, cobalt (III) acetylacetonate and nickel (III) benzoyl acetonate. The alkali metal is preferably potassium. The reaction may be carried out in the presence of an inert solvent such as a saturated aliphatic hydrocarbon. Examples are given of the dimerization of propylene, and of n-butylenes but other monomers specified are isobutylene, pentene-1, hexene-1, heptene-1 and octene-1.
Patent GB-1010916-A (GB)
Title: Linear polyesteramides
IPC: C08G69/44
Filed: 1962-06-28
Abstract: A process for the preparation of linear polyesteramides comprises condensing together 4-aminomethylcyclohexane methanol and at least one phenyl ester of a dicarboxylic acid containing at least one hexacarboxylic ring.  The aminoalcohol may be used either in the cis-and/ or the transform.  Specified dicarboxylic acids are trans-1:4-cyclohexane-dicarboxylic acid, p:p1-sulphonyldibenzoic acid, 4:4-diphenic acid, 4:41-benzophenone dicarboxylic acid and 1:2-di-(p-carboxyphenyl) alkanes. The preparation may be effected by melt or solid phase polymerization.  Specified reaction catalysts are lithium phenoxide, lithium hydride, dibutyl tin oxide, dibutyl diphenyl tin and tin and lead oxides.  The examples describe the preparation of polymers from 4-aminomethylcyclohexane methanol and:-(1) diphenyl terephthalate and (2) diphenyl trans-1:4-cylcohexanedicarboxylate. Specifications 818,157 and 959,671 are referred to.
Patent GB-208230-A (GB)
Title: Manufacture of lead alloys
IPC: C22C11/02
Filed: 1922-09-14
Abstract: 208,230. Mathesius, W., anw Mathesius, H. Sept. 14, 1922. Alloys.-In bearing-metal alloys consisting of lead hardened by small proportions of alkali metal or alkaline-earth metal and containing also copper, the copper is present in the form of a compound with the alkali or alkaline earth metal of the type CuCa4. The copper compound may be added as such to a previously prepared molten bath; or the alkali or alkaline earth metal may be added electrolytically to molten lead-copper alloy; or the copper may be added electrolytically to electrolytically prepared lead alloy containing the alkali or alkaline earth metal.
Patent GB-443580-A (GB)
Title: Manufacture of 3:4:5:6-tetrahalogen-2-amino-1-oxybenzenes
Inventor: RAECK DR MAX
IPC: C07D263/58
Filed: 1934-08-30
Abstract: 3 : 4 : 5 : 6 - Tetrahalogen - 2 - amino - 1 - oxybenzenes are prepared from 3 : 4 : 6-trichloro-2-amino-1-oxybenzene by treatment with phosgene to give the corresponding oxazolone, and then chlorination of the latter to give 2-oxo-4 : 5 : 6 : 7-tetra-chlorobenzoxazoledihydride-(2 : 3) or bromination to give 2-oxo-4 : 5 : 7-trichloro - 6 - brombenzoxazoledihydride - (2 : 3) and finally saponifying the oxazole ring to obtain 3 : 4 : 5 : 6 - tetrachloro - 2 - amino - 1 - oxybenzene or 3 : 4 : 6-trichloro-5-bromo-2-amino-1-oxybenzene.  These bodies are useful as intermediate products for dyestuffs and pharmaceutical preparations. Examples are given.
Patent GB-1428833-A (GB)
Title: Display instrument using optical collimation
IPC: G02B27/00
Filed: 1973-05-24
Abstract: 1428833 Optical apparatus THOMSON-CSF 24 May 1973 [26 May 1972] 25002/73 Heading G2J A head-up display instrument comprises a prism 12 to direct light from the luminous objects e.g. reticles 13 through the objectives lens 11 to the observer's eye via a transparent beam combining plate. Face BC of the prism is normal to the incident axis X and face AB is normal to the exit axis Y and angle ABC is twice CAB. Preferably angle CAB is between 25 degrees and 35 degrees so that two reflections occur in the prism, giving an increased exit pupil.
Patent GB-942242-A (GB)
Title: Apparatus for feeding articles in wrapping machines
IPC: B65B35/20
Filed: 1962-06-29
Abstract: 942,242. Wrapping machines. FR. HESSER MASCHINENFABRIK-A.G. June 29, 1962 [Oct. 19, 1961], No. 25014/62. Heading B8C. The leading article G<SP>1</SP> of a series of articles G to be wrapped which are delivered by a conveyer or a pusher member 17, Fig. 8 (not shown), is received on the top of a horizontal pusher member 3, as it pushes a previous article G<SP>11</SP> into a folding tube 5 or the like, the member 3 is then retracted and the leading article G<SP>1</SP> descends to be pushed in its turn by the vertical face 3<SP>1</SP> of the member 3 into the tube 5. As shown, a wrapper blank E is fed through a guideway 6 to be carried by the article G<SP>11</SP> into tube 5. The articles G on conveyer 1 are fed between guide rails 7, 8 until article G<SP>1</SP> engages stop 2. In a modification, Fig. 5, plate 3 is comb-shaped and meshes with grooves on a vertically movable plate 10. On retraction of plate 3, plate 10 is lowered to present the article 9<SP>1</SP> to the pushing surface of member 3.
Patent GB-1105085-A (GB)
Title: Apparatus for supplying x-ray tubes and x-ray equipment comprising x-ray tubes and apparatus for supplying them
IPC: H05G1/70
Filed: 1965-05-27
Abstract: 1,105,085. Control systems for X-ray apparatus. SIEMENS - REINIGER - WERKE A.G. 27 May, 1965 [29 May, 1964], No. 25025/65. Heading H2H. X-ray diagnostic apparatus which can be operated either with a single X-ray tube 17 or with concurrent or alternate operation of two X-ray tubes 15, 16 comprises two high voltage generators 1, 2 in the form of transformers arranged in a single oil-filled housing, the transformers being identical and each of the secondary windings being in two parts 3, 3<SP>1</SP> and 4, 4<SP>1</SP> each part being connected to a full wave rectifier group serially interconnected in pairs 5, 51 and 6, 6<SP>1</SP>, the apparatus comprising a number of relays A ... F and a manually operable selector 13, the selector 13 energizing the relays selectively so that with the selector 13 in: Position I-tubes 15, 16 are separately connected to generators 1, 2 with a common voltage control by autotransformer 9 giving concurrent tube operation. Position II-tubes 15, 16 are separately connected to generators 1,2 with separate voltage control by autotransformers 9 and 11 giving concurrent tube operation. Position III-tube 17 is connected to generators 1, 2 in parallel with voltage control by autotransformer 9. Position IV-tube 17 is connected to generators 1, 2 in series with voltage control by autotransformer 9. Position V-tubes 15, 16 connected as in position 2 but relay A is energized and deenergized after each exposure to give alternate operation of the tubes. The arrangement being such that in positions I-III and V the connections between the rectifier pairs 5, 5<SP>1</SP>; 6, 6<SP>1</SP> are earthed and in position IV the connection between the rectifier pairs 5, 6 is earthed. A time switch 12 is included in the system to control the exposure periods. The system also includes known overload protection devices.
Patent GB-219540-A (GB)
Title: Improvements in or relating to double compartment collapsible tubes
IPC: B65D35/22
Filed: 1923-10-08
Abstract: 219,540. Hopkins, N. M. Oct. 8, 1923. Tubes or containers, collapsable. - In collapsable tubes or containers of the kind described in Specification 209,920, comprising inner and outer compartments having a common extrusion orifice, the rates of extrusion of the different materials in the separate compartments may be regulated by adjusting the relative mobilities of the materials, or by providing a foraminous obstruction 10, within the inner compartments, or by making the tubular walls 1, 3 of the compartments of different thicknesses, thereby causing the contents 2, 4 to be extruded together at equal rates in the form of a central core 7 and an outer shell 8.
Patent GB-279620-A (GB)
Title: Improvements in or relating to automobile torpedoes
IPC: F42B19/00
Filed: 1926-10-09
Abstract: 279,620. Whitehead Torpedo Co., Ltd., and Jones, A. E. Oct. 9, 1926. Torpedoes, locomotive. - The air conduit A<3> between the air reservoir A<1> and the air-heating chamber B<1> for the propelling engine B<1x> is provided with a slidable packed joint B<3> united by a rotatable member D having interrupted collars D<1>. This arrangement allows the joint to be readily broken when the shell sections A, B are separated. The lever B<4> which opens the air admission valve B<2> during the passage of the torpedo through the tube coacts with the member D to prevent disconnection of the joint except when the admission valve is open. Specification 225,402 is referred to.
Patent GB-845728-A (GB)
Title: Improvements in tower cranes
IPC: B66C23/34
Filed: 1957-08-09
Abstract: 845,728. Folding tower cranes. ETABLISSEMENTS F. POTAIN ET CIE. - Aug. 9, 1957 [Aug. 13, 1956; March 6, 1957], No. 25190/57. Class 78 (4). A collapsible tower crane has a jib 21, 22 pivoted at 19 to the top of an extensible tower 10, 11 and raised to its horizontal operative position by a cable 23, Fig. 3, which is engaged with gudgeons 38 on the back of the cab 17 and arranged to become taut shortly before the tower is fully extended. The tower is first raised from its Fig. 1 position about the pivot 8, the cab 17 acting as a counterweight and remaining horizontal by virtue of a parallelogram linkage 7, 13, 15. The raising and extending of the tower are by means of a cable 24 which is anchored to the head of the tower element 10, then passes round pulleys 25 on the inner element 11, pulleys 26, 27 at opposite ends of the element 10 and pulley 28 on the cab frame to a winch 29. During the raising movement the elements 10, 11 are locked together. The tower may be locked in either end position by a pin 47, and the cab is supported in the Fig. 1 position by removable struts 48. With the tower extended, element 11 is held by two rods 32, Fig. 7, inserted in V-notches in blocks 30, 33 on the elements 10, 11 respectively. Side play is taken up by eccentrics 35 spring-loaded to their disengaged positions and operated by ropes 37.
Patent GB-478384-A (GB)
Title: Improvements in a parachute
IPC: B64D17/00
Filed: 1936-09-16
Abstract: 478,384. Parachutes. SEDLMAYR, G., (trading as AUTOFLUG). Sept. 16, 1936, No. 25251. Convention date, Sept. 16, 1935. [Class 4] In a parachute of the type having a canopy with one or more air vents and shroud lines which run from one side of the canopy over the apex thereof to the other side, some or all of the shroud lines are fastened to the skirt of the canopy and are connected to the border of the air vent by means permitting relative movement. As shown, certain of the rigging lines b are fastened at the skirt of canopy a and are led through guides e secured at the border c of air vent d, and others are secured at both the skirt and at the border c. Pull cords g secured to border c or to the canopy adjacent thereto are loosely disposed in all or some of the meridian seams f and are led downwardly to within reach of the wearer.
Patent GB-154563-A (GB)
Title: Improved process for the manufacture of a mixed manure containing a variable amount of nitrogen and fertilising salts
IPC: C05C1/00
Filed: 1920-09-02
Abstract: Calcium cynanamide is decomposed by acid, the dilute cyanamide solution first obtained being employed several times successively in the treatment of more calcium cyanamide, and the concentrated solution of cyanamide thus obtained is allowed to stand, with or without addition of a little ammonia.  The dicyandiamide separating out is converted into ammonium salts by treatment with an acid such as sulphuric, phosphoric or nitric, or a mixture of acid and an acid salt.  The excess acid is employed for the preparation, within the mixture, of superphosphate or other combination having manurial value, or may be neutralized with ammonia or suitable salts thereof. The carbon dioxide produced in the decomposition of the dicyandiamide may be collected and employed in the production of the cyanamide solution.ALSO:A manure is obtained by converting dicyandiamide into ammonium salts by treatment with an acid such as sulphuric, phosphoric, or nitric, or a mixture of acid and an acid salt; the excess acid is employed for the preparation, within the mixture, of superphosphate or other combination having manurial value.
Patent GB-532614-A (GB)
Title: Manufacture of hydroxy compounds of the terpene series
IPC: C07C35/12
Filed: 1939-09-12
Abstract: 532,614. Terpene alcohols. HOWARDS & SONS, Ltd., HUGGETT, W. E., and PORTER, H. T. Sept. 12, 1939, No. 25652. [Class 2 (iii)] Mono-hydroxy compounds of the terpene series are made by hydrolyzing a hydrohalogen addition product of a phellandrene by treatment with an alcoholic caustic alkali solution at a temperature not exceeding 50‹C. Alternatively the halogen atom may be replaced by the residue of an organic acid by reaction with a salt of one acid, and the product hydrolyzed by alcoholic caustic alkali. Examples are given of the production of piperitol from the addition product of commercial phellandrene and hydrogen chloride.
Patent GB-355039-A (GB)
Title: Improvements in and relating to retarders for tubes particularly of furnace air heaters
IPC: F23M20/00
Filed: 1930-08-28
Abstract: 355,039. Surface heat exchange apparatus. McKEAN, J. G., Westerhill, Mount Vernon, Lanarkshire, and JONES, R. F., 239, Auldhouse Road, Newlands, Glasgow. Aug. 28, 1930, No. 25665. [Class 64 (iii).] Baffles or retarders 3 for the tubes 2 of air heaters through which pass the waste gases from a boiler furnace are supported by two curved spring blades 1 which normally lie beyond the upper end of the tube spaced apart a distance greater than the diameter of the tube. The blades are rounded at 1<2> so that when pressed together they may be passed through the tube. The blades may be formed with a flat part 1<3> secured to the end of the retarder by rivets 4 or the retarder may comprise a twisted blade having its upper end split, curved and spread into the desired shape.
Patent GB-443969-A (GB)
Title: Improvements in or relating to apparatus or appliances for the heat-treatment of metals
IPC: F27B9/38
Filed: 1934-09-08
Abstract: 443,969. Metal - heating furnaces. BIRMINGHAM ELECTRIC FURNACES, Ltd., and THOMLINSON, F., Tyburn Road, Erdington, Birmingham. Sept. 8, 1934, No. 25860. [Class 51 (ii)] Charging.-In a furnace for heating workpieces such as spindles, rods, tubes, or the like, of the kind comprising a number of side-by-side muffle tubes a through which trains of work-pieces b are moved by reciprocating plungers c operated in succession across the width of the furnace, the actuating mechanism for the plungers consists of a continuously rotating drum e carrying staggered teeth e<2> which, by engagement with collars c<1> on the plungers, effect one charging stroke of each plunger during each revolution of the drum. The plungers are returned to inoperative position by springs d. The teeth e<2> are detachable so as to permit substitution of teeth of different length, and two or more sets thereof may be provided in order that a plurality of charging strokes may be imparted to each plunger during one revolution of the drum.
Patent GB-824740-A (GB)
Title: Tabulator mechanism for teleprinters
IPC: H04L13/18
Filed: 1957-08-16
Abstract: 824,740. Type-printing telegraphy. CREED & CO. Ltd. Aug. 16, 1957 [Aug. 22, 1956], No. 25930/57. Class 40 (3). In a page teleprinter including a keyboard transmitter having a space bar and a run-out key, and associated with the printing arrangement to provide a home record of the message transmitted, a tabulator arrangement comprises a lug on the moving carriage of the teleprinter, a rod arranged parallel to the direction of movement of the carriage and having one or more cams and a rocker or arm thereon, and in the tabulation operation the lug during the movement of the carriage engages one or more of the cams to actuate the rod and cause the rocker or arm to act via associated electrical or mechanical means on the run-out key to render it ineffective for the continuation of a spacing operation initiated by the actuation of the space bar. On the operation of the space bar 28 a member 29 is moved downwardly to unlatch the lower end 30 of the pivoted lever 31 having blocking engagement with a surface on a pivoted pawl 8 usually held in the position shown by a compression spring 9 acting on the left-hand end of the run-out key lever 10. On the depression of the key 10 subsequent to the actuation of the bar 28, the pawl 8 is rocked clockwise by its spring 34 and takes with it the lever 31 so that its upper end 36 moves to the left under the action of a light loading spring 38 and against the action of a light biasing spring 40 to bring clutch member 27 into engagement with an associated member 27A so that the carriage spacing arrangement is operated from the printing shaft. When the lug 11 on the carriage 24 engages a cam member 2 adjustably positioned on the rod 21, the supporting rocker arms 1 are moved clockwise and an extension 3 of one of the arms closes contacts 4 in the circuit of an electromagnet 6 which by attracting its armature 7 connected to the pawl 8 restores the latter to its position shown in which the clutch member 27 is moved to the right by its biasing spring 40 and the spacing movement of the carriage 24 is terminated. The tabulator arrangement can be disconnected by opening the switch 20. In a modification, Figs. 2, 2a (not shown), the extension 3 is connected to a slidably mounted rod having an operating projection in engagement with lever arm of the pawl 8 in its operated position so that upward movement of the extension 3 rotates the pawl 8 clockwise to its normal position in which the clutch members 27, 27A are disconnected.
Patent GB-403922-A (GB)
Title: Improvements in and relating to rectifier systems for alternating currents
IPC: H02M7/06
Filed: 1933-09-20
Abstract: 403,922. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl- Ufer, Berlin.) Sept. 20, 1933, No. 25988. Convention date, Sept. 20, 1932. [Class 38 (ii).] In a rectifier installation provided with a smoothing choke 12 and a condenser 14 connected in shunt with load 13, means are provided for short-circuiting the condenser on disconnection of the rectifier 10 in order to avoid discharge of the condenser through the load circuit. The means comprise a gridcontrolled valve 15 connected across the condenser 14 and normally blocked by a negative potential on the grid derived from a battery 17. In the arrangement shown in Fig. 1, on disconnection of the rectifier, the valve 15 is rendered conductive by opening of a switch 16 in the grid circuit. Such opening may be effected for example by the same relay which disconnects the rectifier under overload or short circuit conditions. Alternatively the valve 15 may be rendered conductive by application of a positive impulse to the grid, such impulse being derived from a transformer 18, Fig. 2 the primary of which is included in the condenser circuit and arranged so that when the latter commences to discharge on disconnection of the rectifier, an impulse of the required polarity is generated in the secondary.
Patent GB-1131854-A (GB)
Title: Improvements in and relating to the monitoring of control systems
Inventor: BARLTROP RICHARD KENNETH
IPC: F15B9/09
Filed: 1965-06-18
Abstract: 1,131,854. Aircraft control systems. ELLIOTT BROS. (LONDON) Ltd. 14 June, 1966 [18 June, 1965], No. 26007/65. Headings B7G and B7W. [Also in Division G3] In a control system for an hydraulic actuator 15 controlling movement of an aircraft elevator 19 wherein the hydraulic supply to the actuator is controlled by a torque motor operated valve 14 in dependence on signals supplied to an amplifier 13 responsive to demand signals from a control lever 11 and actuator position feedback signals from a device 20, the system is provided with a comparator 23 capable of comparing the demand signal with an actuator position signal from a device 20a and if the discrepancy is above a predetermined amount the effectiveness of the control valve is caused to be reduced by operation of a throttle valve 24 in series therewith whereas if the discrepancy is above a further and higher predetermined amount the control valve is rendered completely ineffective. The control valve is rendered completely ineffective by the comparator 23 causing a by-pass valve 25 to be opened to thereby connect together the opposite sides of the actuator. When the by-pass valve 25 is operated an audible or visual warning device 26 is also operated. To enable the system to allow for the delay in response between the sending of a demand signal and the completion of the required actuator movement, the demand signals are supplied to the comparator through delay means 22. The delay means 22 is adapted to allow for the longer response when the throttle valve 24 is in operation.
Patent GB-980824-A (GB)
Title: Improvements in or relating to ceiling roses
Inventor: JONES ARTHUR ASTBURY
IPC: H02G3/20
Filed: 1962-07-06
Abstract: 980,824. Ceiling roses. GENERAL ELECTRIC CO. Ltd. July 8, 1963 [July 6, 1962], No. 26026/62. Heading H2E. A ceiling rose has a base 1, with an arcuate barrier 8, on the side facing downwardly from the ceiling, and has two terminal members 6 and 7, located in the barrier so that connections can be made on both sides of the barrier at 9 and 10, to leads passing through a cable entry aperture 15, which is located in a position offset from the centre. A central hole is provided in the cover through which the leads to the light fitting pass, and the ends of the barrier 8, are provided with hooks 17, which act as strain-taking devices when the cables are hooked round them. A further terminal member 5 may be provided which has an insulating shroud by means of which it is detachably clipped into position on said base. In a second embodiment, Fig. 9 (not shown), two parallel barriers are provided.