baber/WOPTO huggingface dataset:
Patent GB-803260-A (GB)
Title: Method of and means for making strengthened pipes or other articles from plastic or other material
Filed: 1954-02-17
Abstract: 803,260. Moulding tubes and rods. FRENKEL, M. S. Feb. 8, 1955 [Feb. 17, 1954; Nov. 9, 1954], Nos. 4719/54 and 32388/54. Class 87(2). A screw-threaded member, in which the crosssectional areas of the grooves of the thread vary inversely with the radial clearance between the member and a co-axial member, may be used either as an extrusion screw for extruding tubes or rods or as the outer component of a sizing die. In Fig. 1, the screw-threaded member is shown as an extrusion screw 10 rotating within a cylinder 11. The screw is a four start thread having a zero depth at the entry 14 increasing to a maximum through the section 15 and then decreasing to zero depth again through the section 16. Longitudinal ribs 18 may be provided on the member 11 to prevent the material from rotating with the screw at the exit end 17. Passages may be provided in the outer member or the screw may be hollow, see Fig. 2 (not shown), for the circulation of steam. Air or other gases are allowed to escape through the outer member 11. In a modification, Fig. 6 (not shown), the mean diameter of the screw may increase only slightly. In a further modification, Fig. 10, a tube may be formed from three heated strips of Z or U-section which may contain a reinforcement by winding the strip 41 about a stationary mandrel 40 by means of a rotating tool 42 having a thread 44 having members 45 which acts to heat the strips by friction. A spring-urged plate 46 applies axial pressure to the strip. The formed tube may pass through a further rotating tool 48 also provided with an internal thread 50. This tool may rotate in the opposite direction to the tool 42. The strip may be pre-heated by passing it about a shaft 52 having friction members 56. In another modification, Fig. 12, two rotating tools 63, 62, each having friction heating elements 67 form a tube having two layers. The first friction heating element 67 of the ring 62 is bent at right angles at 73 to heat the adjacent surfaces of the tube. Alternatively, Fig. 13 (not shown) the strips may be preheated by passing them through two rotating tools. As shown in Fig. 14, a pipe may be expanded by passing it over a mandrel 82 by means of a rotating tool having an internal thread 87. As shown in Fig. 15, a pipe 92 which may come from an extruder 91 is sized by passing it between a mandrel 93 and a rotating ring 94 having an internal thread 98. The ring may be heated at 108. A wire reinforcement 102 may be introduced through a channel 104.
Patent GB-548486-A (GB)
Title: Chlorination of polyvinyl chloride
IPC: C08F8/20
Filed: 1941-04-09
Abstract: 548,486. Chlorinated polyvinyl chloride. CHAPMAN, J., CRAWFORD, J. W. C., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 9, 1941, No. 4727. [Class 2 (iii)] Chlorinated polyvinyl chloride is prepared by chlorinating a solution of polyvinyl chloride in an organic solvent containing a small proportion of water. Specified solvents are the trichloroethanes, the tetrachloroethanes and pentachloroethane or mixtures thereof. An agent which swells polyvinyl chloride but does not dissolve it, e.g. carbon tetrachloride, may be added to the reaction mixtures. The reaction may be accelerated by heat, actinic radiation or agitation. When the chlorination has been effected, dissolved chlorine and hydrogen chloride may be removed by blowing with air or nitrogen. The product may be recovered by cooling the reaction solution and adding a precipitant e.g. methyl or ethyl alcohol. The products may be used for the production of films or moulded articles and as ingredients in lacquers and coating compositions.
Patent GB-164082-A (GB)
Title: Improvements in belt fasteners and the like
IPC: F16G3/08
Filed: 1920-02-17
Abstract: 164,082. Kirtland, J. Feb. 17, 1920. Belt fastening.-A belt fastening comprises one or more flexible strips a secured 'by rivets d, e at a distance from the belt ends and provided with a slot f through which other rivets g, h pass to hold up the belt ends whilst allowing relative movement when the belt is curved round a pulley. The strips may be laced to the belt or secured in any well known manner. The belt ends may be cut diagonally and the strips set one in advance of the other.
Patent GB-452422-A (GB)
Title: Improvements in variable speed and reversing gearing
IPC: F16H37/08
Filed: 1935-02-15
Abstract: 452,422. Variable-speed and reversing gearing. WOODS, C. H., Densworth, Endebess, Kenya, British East Africa. Feb. 15, 1935, No. 4972. [Class 80 (ii)] [See also Group XXVI] A gearing arrangement whereby a progressive change of speed may be obtained in both forward and reverse directions comprises a variable speed gear and an epicyclic gear, the first element of the epicyclic gear being rotated by the driven element of the variable speed gear, the driving element of this gear being rotated by the driving shaft and the driven shaft being coupled to the third element of the epicyclic gear. In the form shown in Figs 2 and 4, the variable speed gear comprises a disc 35 slidably but non-rotatably mounted on the driving shaft 13 resiliently held in engagement with friction wheels 25 similarly mounted on radial shafts 24 carried by upstanding parts 22, 23 on a stationary plate 21. The wheels 25 are coupled to the slidable bosses by gimbal rings 27 pivoted to the bosses at 28, 29 and to the wheels by pivots arranged at right angles. to the pivots 28, 29. The wheels 25 are also mounted in forks 32 rotatably mounted in bosses 42 slidable in slots 43 in the plate 21. The lower ends of the members 32 are provided with arms 44 having pins engaging a spiral slot in a plate 46. By rotating the plate the wheels are tilted with respect to their shafts and thereby caused to take up a new radial position giving a different gear ratio. Each of the shafts 24 carries a bevel pinion 39 meshing with a pinion 40 formed integrally with the crown wheel 18 of the epicyclic gear. The other crown wheel 16 is coupled to the driven shaft 19 while the planetary pinions 15 are carried by a spider 14 on the driving shaft. In a modification employing a variable speed gear comprising oppositely coned pulleys connected by a crossed belt, the driving shaft directly rotates one of the crown wheels of the differential gear and orbitally rotates the planetary bevel pinions through the variable speed gear. Fig. 5 shows the invention applied to a governing device for a prime mover. The prime mover directly drives the crown wheel 81 and the friction disc 75. The planet carrier is rotated by a pinion 78 on a shaft 77 carrying a friction wheel 76 adjusted to vary the gear ratio by a centrifugal governor 86 acting through a bellcrank 87 and adjustable link 88. Reference has been directed by the Comptroller to Specifications 17533/97, 15036/00, [both in Class 80], 326,314, [Class 80 (ii)], 375,610, 387,214, 417,633, and 427,431.
Patent GB-904123-A (GB)
Title: New cyclopentanophenanthrene compounds and process for the production thereof
IPC: C07J1/00
Filed: 1959-02-12
Abstract: The invention comprises 6-bromosteroids of the general formulae:- <FORM:0904123/IV (b)/1> the corresponding 3-alkyl enol ethers of the D 4 compounds, compounds of the general formula:- <FORM:0904123/IV (b)/2> (R is hydrogen or a hydrocarbon carboxylic acid acyl group of less than 12 carbons, R2 is a lower alkyl or alkinyl group of less than 6 carbons, R3 is hydrogen or methyl, X is hydrogen or fluorine and Y is a single or double bond between C1 and C2), and a process for the preparation of 6a -bromo-D 4-3-keto steroids of the androstene and pregnene series which comprises reacting the 3-alkyl ether of an appropriate D 4-3-keto steroid with hypobromous acid (or its equivalent, e.g. N-bromosuccinimide) and inverting the configuration at C6 of the resulting 6b -bromo-D 4-3-keto steroid with strong acid.  The D 1,4-compounds are preferably prepared by dehydrogenation of the D 4 - compounds with selenium dioxide in t-butanol, and the corresponding 3-alkyl enol ethers are prepared by reacting the 6a - or 6b -bromo-D 4-3-ketones with a lower alkyl orthoformate.  The invention is illustrated by sixteen examples.
Patent GB-911924-A (GB)
Title: Improvements in magnetrons
IPC: H01J23/213
Filed: 1960-02-12
Abstract: 911,924. Magnetrons. LITTON INDUSTRIES Inc. Feb. 12, 1960 [June 8, 1959], No. 4998/60. Class 39 (1). In a multi-cavity magnetron of the vane-type, the vanes 16, Fig. 1, are folded e.g. by making them of generally Z-shape, as shown, so that at least two portions of each vane conduct current in opposite directions. The vanes are brazed to an outer anode ring 12. Tuning is by segments 20, one for each resonator, which give predominantly inductive tuning in their upper positions and predominantly capacitive tuning in their lower positions. The tuner has alignment rods 30 and support rods 28 fixed to bellows seat 40. Permanent magnet 26 has internal polepieces 27.
Patent GB-470507-A (GB)
Title: Improvements in or relating to coke wagons
IPC: C10B39/04
Filed: 1936-02-19
Abstract: 470,507. Coke - quenching wagons. WELLMAN SMITH OWEN ENGINEERING CORPORATION, Ltd., and PURVES, G. T. Feb. 19, 1936, No. 5082. [Class 51 (ii)] A coke-quenching wagon 1 carries, preferably at one end, a water tank 5 which feeds a system of sprinkler pipes 7, 8 adapted to be swung about the axis of the supply pipe 9 from the horizontal to the vertical position when coke is being charged into the wagon. The arrangement may be such that the water supply is automatically turned on and off by the movement of the pipe system. The tank 5 may be mounted on the underframe of the wagon and the delivery of water to the sprinklers effected by a pump or compressed air. Specifications 435,127 and 465,075 are referred to.
Patent GB-454151-A (GB)
Title: Improvements in or relating to seamless steel alloy vessels
IPC: C22C38/28
Filed: 1935-02-18
Abstract: A seamless steel vessel, such as a tube having extreme ductility and softness in the hotformed state is made from the alloy described in the parent Specification by hot-forming at a temperature in excess of 1000 DEG  C. but below the melting point of the alloy and then rapidly cooling.  Before the vessel is rapidly cooled it may be annealed by heating at a temperature above 750 DEG  C. but below the melting point of the alloy, e.g. between 850 and 950 DEG  C. for a time between two minutes and two hours.  The alloy may contain up to 2 per cent of molybdenum, up to 3 per cent of tungsten and aso small amounts not exceeding 2 per cent of manganese, silicon aluminium and zirconium.
Patent GB-348226-A (GB)
Title: Improvements in the manufacture, by casting, of surfaces or thin panels of great superflcial area
IPC: B22C11/00
Filed: 1930-02-17
Abstract: 348,226. Metal plates and sheets. FLEURY, R. DE, 12, Boulevard Emile Augier, Paris. Feb. 17, 1930, No. 5283. Convention date, Feb. 18, 1929. [Classes 20 (ii) and 20 (iv).] Doors, thin panels, and like surfaces, provided with strengthening elements 3a, Figs. 1 and 3a, have these progressively increasing or decreasing in thickness towards the opposite edges of the surface, the elements being of conical-pyramidal, truncated-cone or like formation provided with hollows. The surfaces 1a may be flat or undulating as shown in Fig. 3. In the case of a hinged door, the vertical edge-flange opposite the hinge must be sloped and to facilitate stripping the flange adjacent the hinge is made parallel to the other flange.
Patent GB-474877-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/24
Filed: 1937-02-24
Abstract: 474,877. Vacuum cleaners. JACKSON, L. MELLERSH-. (Quadrex Corporation) Feb. 24, 1937, No. 5505. [Classes 8 (i) and 8 (ii)] [Also in Group XXV] The cleaner includes a motor suction unit 1, a manually-removable annular dirt receptacle 2, an up-draught air duct 3, a yieldable spider 4 to hold the filter 5, a top 6, and a handle 7, arranged coaxially, annularly and rigidly. The top rim of the receptacle engages a seat on the spider and is locked thereto in an air-tight manner. The filter contains an up duct 8 sewn on the inner wall. A housing 14 surrounds the motor which drives the fan 16. An outer casing 17 provides a spiral passage for the dust-laden air and is arranged around the motor casing. The part 4 is supported on the handle by a pin 19. The inner filter tube 21 is secured to the spider by a hem containing a flat spring 22. A knob on the receptacle draws off and snaps in over a spring when the receptacle is removed and replaced. A cam 31 with handle is arranged beneath the spring to effect locking. Alternatively, spring-loop latches, Fig. 6, may be used.
Patent GB-1497506-A (GB)
Title: Organophosphorus condensates and their use as flame proofing agents
IPC: D06M101/16
Filed: 1976-02-12
Abstract: 1497506 Phosphoramidic condensates LEBLANC RESEARCH CORP 12 Feb 1976 [24 Feb 1975] 05534/76 Heading C2P [Also in Divisions C3 and D1] The invention comprises water-soluble condensates obtained by reacting at least one compound (a) with at least one compound (b): (where Y- is an anion, e.g. chloride, bromide, carbonate, nitrate, sulphate, phosphate, acetate; and R<SP>1</SP>-R<SP>3</SP> are each H or CH 2 OH, R<SP>3</SP> alternatively being CH 3 ), the molar ratio (a) : (b) being 0À33 : 1 to 3 : 1. The reaction is preferably effected in a solvent (e.g. water) at 18-120 C. The condensates contain the structures I and/or II and may contain terminal P-CH 2 OH or P-NR<SP>1</SP>CH 3  groups. N - (Hydroxymethyl) - N,N<SP>1</SP>,N<SP>11</SP> - trimethylphosphoramide is prepared from N,N<SP>1</SP>,N<SP>11</SP>-trimethylphosphoramide by reaction with paraformaldehyde.  The inventive condensates are used for flameretarding textiles.
Patent GB-1176423-A (GB)
Title: Improvements in or relating to Anchor Nuts
IPC: F16B37/04
Filed: 1967-02-06
Abstract: 1,176,423. Nuts. C.E.M. CO. Inc. 6 Feb., 1967 [7 Feb., 1966], No. 5559/67. Heading F2H. An anchor nut comprising a threaded hole 4 in a plate 1 is provided with one or more bendable prongs 2 by which the nut can be attached to a panel 6 by bending the prongs 2 after being passed through a hole in the panel and with at least one tab 5 which projects from the plate 1 and which, when the nut is mounted on the panel, abuts an edge portion 8 to prevent relative movement between the nut and panel 6. When more than one tab 5 is provided the tabs are arranged between a pair of bendable prongs (2<SP>1</SP>), (Fig. 6, not shown) and are arranged to abut opposite sides of a slot (7<SP>1</SP>) in the panel (6<SP>1</SP>) when the nut is mounted in such slot in the panel. The prongs are bent into abutting engagement with the panel when a bolt or the like is engaged in the nut. Cut-out portions are provided in the plate 1 adjacent each prong 2 to accommodate portions of the panel 6 when the nut is anchored thereto.
Patent GB-932971-A (GB)
Title: Improvements in or relating to refractory linings for use in furnace structures
Inventor: THOMSON EDWARD
IPC: F27D1/06
Filed: 1961-02-15
Abstract: 932,971. Furnace roofs and other walls. E. J. & J. PEARSON Ltd. Jan. 29, 1962 [Feb. 15, 1961], No. 5578/61. Classes 51 (1) and 51 (2). A panel for the roofs, walls or doors of furnaces comprises a girder frame 10 enclosing rows of firebrick 11, alternate rows being threaded on tubes 12 carried by threaded rods 13 engaging opposite sides of the frame, the remaining rows being filler bricks tapered downwardly. Lifting lugs 14 are provided on opposite sides of the frame.
Patent GB-415432-A (GB)
Title: Improvements in or relating to the charging of batteries from variable voltage generators
IPC: H02J7/14
Filed: 1933-02-23
Abstract: 415,432. Switching systems for batteries. ARMSTRONG, WHITWORTH, & CO. (ENGINEERS), Ltd., SIR W. G., WATKINS, D. J., and PLYER, D. C., Scotswood Works, Newcastle-on-Tyne. Feb. 23, 1933, No. 5593. [Class 38 (iv).] In a system of internal-combustion engine electric power transmission the charging circuit of a battery is so arranged that the battery is only connected to the generator when the motor is disconnected therefrom and the generator speed is sufficiently low to produce a predetermined maximum charging voltage, the generator voltage or a predetermined portion thereof being applied to the coil of a relay controlling contacts in the battery leads. In Fig. 1 the generator G is permanently connected across a coil 9 through a resistance 10. When the motor (not shown) is running a cam 7 rigidly secured to a change -over switch (not shown) for switching from the motor circuit to the battery circuit, holds up the arm 1 against the action of the spring 4 and maintains the battery circuit open at 2, 2, while the contacts 8 are closed and the coil 9 energised from the battery. When the motor circuit is opened the contacts 8 are opened and, when the generator voltage has fallen to a sufficiently low value the striker 6 is operated by the spring 11 against the pull of the core 9 and dislodges the spring loaded trigger 3 the charging circuit then closing at 2, 2. In Fig. 5 the charging circuit is opened and closed by a contactor controlled switch 2 which is operated through the contacts 14 by coils 9 and 12. When the motor circuit is closed contacts 8 are closed simultaneously by the change-over switch (not shown) and the coil 9 is energized from the battery to ensure that the switch 14 is open. When the motor circuit is broken the contacts 8 are opened by the change-over switch but the switch 14 is held open by the coil 9, which is fed through the resistance 10 from the generator, until the generator voltage has fallen to a sufficiently low charging value. The contacts 8 may be additionally controlled by the fuel supply regulating means so that they close at a predetermined minimum engine speed. The coil 12 provides protection against excessive charging current and is stated to provide reverse current protection. In a modification the coils 12 and 9 may act directly on the contacts 2 or the coil 9 may act on the contacts 2 and the coil 12 on contacts in a circuit in parallel with the contacts 8. The coil 12 may be omitted.
Patent GB-633320-A (GB)
Title: Improvements in culinary devices
IPC: A47J37/06
Filed: 1948-02-25
Abstract: 633,320. Cooking apparatus. VREDENBURGH, E. Feb. 25, 1948, No. 5674. [Class 28(i)] A grill pan fitting comprises two superimposed grilles 4 and 7, the upper one being mounted on slidable bearings 6 on rods 2. An article of foodstuff is first cooked on one side on the upper grille, which is then slid away from the lower (to the right in the Figure) and swung about a pivot 5 to deposit the article, in an inverted position, on the lower grille for cooking the other side. In a modification the lower grille is pivoted at 9 in two portions so that when an abutment 12 on the pivot 5 strikes tne upstanding portion 11 of the lower grille it causes the latter to pivot. upwards into a vertical position (7c being integral with portion 11) when the lefthand portion 7b falls over on to the upper surface of the foodstuff.and the two grilles are then returned together inverting the foodstuff for cooking on the reverse side.
Patent GB-637278-A (GB)
Title: Improvements in surface decorating machines
IPC: B44B3/00
Filed: 1948-02-26
Abstract: 637,278. Feeding sheets; printing-machines. OXVAR, Ltd. Feb. 26, 1948, No. 5743. Convention date, Dec. 8, 1939. [Classes 100 (i) and 100 (ii)] [Also in Groups XXIV and XXX] Apparatus for feeding sheets to a pattern transfer roll comprises a conveyer for displacing the sheets along a pair of guideways engaging the sheet edges, and relatively short sag-preventing means between the guideways having a downwardly extending cam surface at their end remote from the pattern transfer roll. As shown in Fig. 6, wall-boards, panels, &c. W are slid along guide-rails 99, 100 towards the printing position by one of two chain conveyers 95, 96 (see Group XXX) and are intermediately supported by short ramp-fronted strips 106, 107, Figs. 6 and 8, the rails 99, 100 and strips 106, 107 being laterally adjustable on the pairs of cross-bars 101, 102; pusher lugs 115 are attached to the operative conveyer only, selected according as the etched &c. pattern roll 15, Fig. 3, has the larger or smaller of two possible diameters, the spacing of the chain links to which the lugs 115 are pivoted being equal to or a simple fraction or multiple of the circumference of the roll 15. The bearings of the transfer roll 20 are fixed, those of the roll 15 being movable on guideways 18, while the impression roller 52 is vertically adjustable, along with the conveyers, the rails 99, 100 and strips 106, 107, by four jacks 31, 32 (Fig. 6) and 34 (Fig. 3) simultaneously operated by a hand wheel 36 through chain and bevel gearing, the drive to the jacks 31, 32 including telescopic shafts 48 having universal joints at their ends. The drive to the various components from a single electromotor includes the following features: (a) to synchronize the peripheral pattern roll speed with that of the appropriate conveyer, a shaft geared in 2 : 1 ratio to the pattern roll 15 carries an exchangeable pinion, the gear transmitting the drive thereto being mounted on a bracket movable about the axis of another gear of the train; (b) the transfer roll drive includes a belt passing over a pair of pulleys whose effective diameter is variable by adjustment of the distance between their V-groove sides; (c) the drive to the shaft 131 (Figs. 3 and 6), and thence to the two conveyers, includes a releasable coupling (.see Group XXIV) whereby the pusher lugs 115 may, by the aid of an indicator plate on the frame, be adjusted to enable sheets of different length to receive the centre of the pattern at their centres.
Patent GB-1086170-A (GB)
Title: Multi-clawed grab having rams incorporated in the claws
IPC: B66C3/16
Filed: 1966-02-10
Abstract: 1,086,170. Hydraulically operated grabs. POCLAIN. Feb. 10, 1966 [April 8, 1965], No. 5867/66. Heading B8H. The jaws 1, 1<SP>1</SP> of a grab are opened and closed by hydraulic rams 12 which are housed within the jaws and pivoted to the jaws near their tips at 14 and to a supporting frame 9 at 13. The grab is suspended from a hook 16 by a rotary coupling 15. The outer walls 4 of the jaws are readily detachable to provide access to the rams. The pivot axes of the rams may be below the pivot axes of the jaws. This would cause the jaws to open when the rams were extended instead of closing as in the illustrated embodiment.
Patent GB-762012-A (GB)
Title: Knitting machines, knitting methods, and knit fabric
IPC: D04B9/18
Filed: 1951-07-05
Abstract: 762,012. Knitting. LOMBARDI, V. July 5, 1951, No. 5885/54. Divided out of 761,966. Class 74 (2). By means of the arrangement described in the parent Specification, a plurality of sock blanks may be formed simultaneously, each occupying that part of the circumference covered by three adjacent wrap yarn guides (e.g. the fields D, E, F) and being spaced from its neighbours by the distance of a wrap guide swing. The top 140 of each sock is of main yarn knitted on alternate needles in alternate courses and on the intervening needles in the intervening courses. In the leg 150, main yarn is knitted in jersey courses at each wale. In continuation therewith the two sides 151, 152 of the heel are now knitted from yarn fed by the wrap guides in the two outside fields (e.g. D and F), the courses first decreasing in extent, to provide portions 157, 158 and then increasing in extent to provide portions 160, 161. Main yarn is now knitted across the entire width of the blank to join thereto and to complete a foot portion 170. Toe portions 171, 172 are formed in the same way as the heel portions. During knitting of heel and toe, the main yarn feeders may be taken out of action by known mechanism controlled by a pattern chain 175. The blanks are connected by unknitted main yarn which may later be cut away. It is stated that gloves may also be produced on the machine.