baber/WOPTO huggingface dataset:
Patent GB-1071946-A (GB)
Title: Polymer production
IPC: C08G2/00
Filed: 1965-04-07
Abstract: Oxymethylene polymers are made by contacting monomeric formaldehyde with an aliphatic lithium compound in solution.  The lithium compound is preferably one having up to 15 carbon atoms, such compounds as n-butyl lithium, vinyl lithium, 3-propyl-butyl lithium, cyclohexyl propyl lithium, and chlorobutyl lithium occurring in a list. Solvents specified are aliphatic, cycloaliphatic and aromatic hydrocarbons.  The usual chain transfer agents may be present as may also the usual endcapping agents, e.g. etherifying, isocyanating, thiocyanating and esterifying compounds.
Patent GB-149605-A (GB)
Title: Improvements in and relating to the manufacture of incandescent electric lamps
IPC: H01K3/06
Filed: 1917-05-09
Abstract: 149,605. British Thomson - Houston Co., (General Electric Co.). May 9, 1917. Filaments; supports for.-A filament wire previously shaped into zigzag form is kept in tension during mounting on supports by drawing it between two surfaces at such a distance apart as to distort the resilient bends sufficiently to produce the friction required. The surfaces may be the walls of a glass tube 11, Figs. 1 and 2. This tube may be oscillated by means of a cam 10 driven by the same means as an intermittent gear 7, 8, which rotates a shaft 6 carrying the lamp stem with the filament supports 13, 14. Previously to mounting, the wire may be coated with salts or other materials for improving the action of the lamp, by means of grooved rollers 3, 4 and a baking-device 5. A tube 15 tensions the wire before coating. Specification 147,955 is referred to.
Patent GB-754205-A (GB)
Title: Improvements in or relating to methods of and apparatus for making shell moulds
IPC: B22C23/00
Filed: 1953-11-05
Abstract: 754,205. Moulding-processes and machines. POLYGRAM CASTING CO., Ltd. Nov. 5, 1953 [Aug. 8, 1952], No. 14874/55. Divided out of 754,112. Drawings to Specification. Class 83 (1). In a shell-moulding process, the moulding mixture is forced into contact with a heated pattern by movable ram, the contact being maintained for a time sufficient to allow a coating of'the desired thickness to be formed, and the ram being then withdrawn to allow the excess mixture to be removed. The subjectmatter of the Specification is contained within Specifications 754,111 and 754,112, which are referred to.
Patent GB-550970-A (GB)
Title: Manufacture of arylacetonitrile derivatives
IPC: C07C37/00
Filed: 1941-11-19
Abstract: 550,970. Arylacetonitrile derivatives. ROCHE PRODUCTS, Ltd., BERGEL, F., HINDLEY, N. C., MORRISON, A. L., and RINDERKNECHT, H. Nov. 19, 1941, No. 14893. [Class 2 (iii)] αα-Bis-(#<SP>1</SP>-hydroxyethyl)-arylacetonitriles, in which the aryl group may carry substituents not interfering with the reaction, are prepared by condensing an arylacetonitrile having an active methylene group with slightly more than two molecular proportions of a formal of the formula X- (CH 2 ) 2 -O-CH 2 -O-(CH 2 ) n  -CH 3 , where X is halogen, m is zero or an integer, in presence of an alkaline condensing agent (sodamide) capable of forming an alkali derivative of the arylacetonitrile, and subjecting the condensation product to mild hydrolysis under acid conditions. In examples #-chloroethylmethylformal is condensed with benzyl cyanide to form αα-bis-[#<SP>1</SP>-(methoxy-methyleneoxy)-ethyl]-phenylacetonitrile which is hydrolysed to αα-bis-(#<SP>1</SP>-hydroxyethyl)-phenylacetonitrile. #-Chloroethylmethylformal is made by the action of chloromethyl ether on ethylene oxide at -5‹-to-10‹C. Specification 550,963 is referred to.
Patent GB-515211-A (GB)
Title: Improvements in and relating to mountings for electric lamps
IPC: H01K1/42
Filed: 1938-05-19
Abstract: 515,211. Electric lamp mountings. BRITISH THOMSON-HOUSTON CO., Ltd. May 19, 1938 No. 14985. Convention date, May 19, 1937. [Class 75 (iii)] An electric lamp 10 of the type described in Specifications 479,258, [Group XL], and 515,091 is provided on the reflector section 14, Fig. 3 (Cancelled), with a shoulder 30, accurately located, preferably perpendicularly, with respect to the axis of the reflecting surface and adapted to be clamped, preferably with an interposed cork or rubber gasket 33, against an annular seat 25 on a supporting ring 24 by means of a retaining ring 31 and tightening screws. The supporting ring 24 may be secured to a supporting structure 12, particularly on a vehicle. preferably adjustably by means of screw studs 26 and nuts 29, or it may be integral therewith. When the cover glass 15 is provided with flutes or prisms, the lamp is located in the correct angular position by a lug 34 on the shoulder 30 engaging in a recess 35 in the seat 25. In a modification. Fig. 2, a shoulder 45 on the lens section 15 is clamped against a flange 44 on a ring 42 by means of a thrust-block 39 and screws 40 passing through a spacer ring 38 and a pair of diametrically opposite resilient arms 43 on the ring 42. and the latter is pivoted, preferably about a horizontal axis, on diametrically opposite pins 41 in a casing 37 fitted over a housing 49 secured to the supporting structure 50 of a vehicle. The lamp is adjusted by a screw 53 co-operating with a spring. 52. Specification 502,551, [Group XXXVI], is referred to. The first part of this abridgment refers to matter not included iri the Specification as accepted but open to inspection under Sect. 91.
Patent GB-402679-A (GB)
Title: Improvements in and relating to polarised relays
IPC: H01H51/22
Filed: 1933-05-24
Abstract: 402,679. Light current relays. TYER & CO., Ltd., and PUNTER, J. W., Ashwin Street, Dalston, London. May 24, 1933, No. 15027. [Class 38 (v).] In a polarized relay having a pivoted armature E movable between pole-pieces k<1>, k<2> of the energizing coils K<1>, K<2> the contacts are carried on a blade H pivotally supported at one end by a spring M and operated by a forked projection P of a member P attached to the armature. The blade H carries contacts O<1>, O<2> adapted to co-operate with relatively fixed contact screws supported in terminal blocks J<1>, J<2> at the sides of the contact blade. The armature is polarised as shown by a single permanent magnet B to the upper pole of which the armature is pivoted and to the lower pole of whieh is secured an adjustable block of magnetic material in the tip of which is adjacent the free end of the armature so that the armature is normally positioned midway between the pole-pieces k<1>, k<2> and the blade H is in a non-contacting position. Alternatively a pair of polarising magnets arranged with adjacent similar poles may be used. The mounting of the contact blade enables it to be withdrawn from the forked projection P<1> to permit the inspection of the contact surfaces without disturbing the armature. Non- magnetic distance pieces E<1>, E<2> on the armature prevent it sticking to the pole faces k<1>, k2.
Patent GB-688618-A (GB)
Title: Improvements in waste-heat steam-generating plants
IPC: F22B1/18
Filed: 1949-06-04
Abstract: 688,618. Waste-heat steam boilers. DALIN, D. June 4, 1949 [March 24, 1949], No. 15064/49. Drawings to Specification. Class 123 (ii) A steam generating system comprises a number of forced-flow boilers of different capacities located at separate sources of waste heat and each consisting of a plurality of tubes extending from an inlet water header, the outlets from all the boilers communicating with a common steam separating drum from which water is circulated through the boilers by an associated pump. The water supply to the boilers is controlled by throttle members in the inlet headers thereof, one for each boiler tube, and further throttles in the conduits leading from the circulating pump to the several inlet headers. Specification 636,769 is referred to.
Patent GB-218810-A (GB)
Title: Improvements in or connected with ferro concrete walls
IPC: E04B2/56
Filed: 1923-06-08
Abstract: 218,810. Haramiishi, M. June 8, 1923. Walls formed of reinforced concrete pillars and single or double slabs, comprise slabs the reinforcements f, Fig. 2, of which project and are autogenously welded to the pillar reinforcements d which project into grooves b. Slots may be made in the pillars to allow of the welding and are afterwards grouted up. Window frames h, Fig. 3, are made with grooves j in which are secured metal plates k to which the slab reinforcements m are autogenously welded.
Patent GB-181005-A (GB)
Title: Reading indicators for manometers
IPC: G01L19/08
Filed: 1922-05-29
Abstract: 181,005. Pneumercator Co., (Assignees of Thomas, W.). May 31, 1921, [Convention date]. Indicators actuated by pressure of head of liquid. - In a manometer or other pressure gauge the pressure or other related value, such as the height, depth, weight, or specific gravity of a liquid contained in a tank, is measured by means of an indicating-device which comprises a f r a m e 16 slidable along a guide rod 15 in juxtaposition to the indicating element 11 and scale 12 of the gauge, an adjustable traveller 25 mounted on a guide-rod 24 carried by this frame, and a pointer 30 associated w i t h the traveller and adapted to magnify the subdivisions of the scale 12. The frame 16 consists of arms 17, 18 having blocks through which the rod 15 extends and which can be clamped thereto by means of a set-screw 20. The arm 17 has a window 21 provided with a sighting-element 23 and the blocks support the rod 24 to which the traveller may be secured by means of a set-screw 26. To the traveller 25 is pivoted one end of a link 34, the other end of which is pivoted to an arm 30<b> adjustably connected by means of a. pivot 32, slot 33<a>, and clamping screw 33 to an extension 30<a> forming an integral part of the pointer 30 which co-operates with the scale or scales 37 of the plate 36. The limits of the scale, 37 correspond to the limits 39, 40 which represent the range of movement of the mark 38 of the traveller and is equal to the distance between the unit graduations cf the scale 12. In operation, the traveller is first shifted until the pointer is brought to the zero mark on the scale, it is then clamped and the frame moved until the index 28 coincides with the nearest unit graduation of the scale 12 whereupon the traveller is unclamped and shifted until the index 28 is tangent to the meniscus and the pointer 30 thus indicates the fractional value to be added to the indication of the scale 12. The application to the measurement of specific gravities is shown in Fig. 6, in which the chamber 13 of the gauge is connected to a pipe 14 adapted to be put into communication with a source of pneumatic pressure through a pipe 47 and with one or other of two pipes 43, 44 having orifices 45, 46 at a known vertical distance apart and submerged in the liquid the specific gravity of which is to be ascertained. Liquid is first expelled from the pipe 44 and the frame 16 moved until the sighting element 23 registers with the head of the liquid column. The pipe 44 is then closed and the pipe 43 opened until the liquid in this pipe is expelled through its orifice 45 whereupon the traveller 25 is moved until the index 28 registers with the new position of the head of the column and the pointer will indicate the specific gravity on the scale 37.
Patent GB-669241-A (GB)
Title: Device for stabilizing trailers
IPC: B62D53/08
Filed: 1950-06-16
Abstract: 669,241. Turntable forecarriages. WAKEMAN, C. M. June 16, 1950 [April 12, 1950], No. 15133/50. Class 108(ii) A hydraulic damping device for the turntable of a tractor-trailer combination comprises a mounting plate secured to the front edge of the tractor portion of the turntable, such plate carrying a pair of aligned hydraulic cylinders having a common piston rod carrying a grooved block, the groove being engaged by a pin projecting from the trailer. The pin is retractable to put the device out of action. The two hydraulic cylinders are interconnected through an adjustable valve in the driver's cab whereby the degree of damping may be varied or the trailer may be locked relatively to the tractor. As shown, the tractor turntable element 16, which is pivotally mounted on plate 17 and supported by spring 53 at its forward edge, has welded thereto a plate 36 to which is secured a pair of opposed hydraulic cylinders 19, 20 having a common piston rod 39. Secured to the middle of the piston rod is a block 34 having a groove 43 which is engaged by a pin 46 projecting from under the trailer. Rotation of the trailer about the turntable thus displaces the piston rod and forces hydraulic fluid from one cylinder through pipes 21, 22, and control valve 23 to the other cylinder. The system is kept filled with liquid from the reservoir 24 containing a spring-loaded plunger 33 and connected to the system by a one-way valve. The pin on the trailer may be disengaged from the grooved block 34 by a handle 50.
Patent GB-151357-A (GB)
Abstract: 151,357. Adams, A. J. June 21, 1919. Magnetos, driving.-Relates to trip-mechanism for giving a rapid movement to the ignition magneto of an internal-combustion engine at starting or at slow speeds of the engine, and consists in the provision of disengageable means which tend to lock together the driving and driven parts of the mechanism when the engine is running normally so as to prevent chattering. In one construction, Figs. 1 and 2, the driving part c of the trip-mechanism has the form of a U-shaped ring and is coupled to the source of power (not shown) by an Oldham coupling having dog teeth b, d, and the driven part n is in the form of a disk, and is keyed on the magneto shaft q; a spring x couples the parts c, n together, one end of the spring bearing against a post p on the part n and the other end being fixed to the hub portion e of the part c. At slow speeds, the part n is stopped by a detent 26 dropping into a slot 25 therein, further rotation of the part c winding up the spring x until a cam 29 on the part c removes the detent from the slot 25. When the engine has attained a sufficient speed, the detent is knocked over its dead centre by the cam to an inoperative position; the detent may be re-set by a rotatable cam 31. Spring- pressed balls 21 mounted in the hollow posts on the part n enter depressions 24 in the part c and lock the parts together when the engine is running normally. In a modification, Fig. 4, the posts and balls are on the driving part c and the depressions on the driven part. The driven part n comprises two rings each provided with a concentric series of holes 39. 41. The series 39 is one more in number than the series 41, so that by turning one ring with respect to the other, they may be coupled by a pin 42 in any relative angular position to obtain correct timing. The pin 42 may have a flange 43 which enters an annular groove in'the ring 38. The part c is coupled to the source of power (shown as a flange 33) by a leather disk 35 by means of two pairs of pins 34. Specification 151,565 is referred to.
Patent GB-651436-A (GB)
Title: Improvements in aircraft
Inventor: HILL GEOFFREY TERENCE ROLAND
IPC: B64C3/40
Filed: 1948-06-04
Abstract: 651,436. Aircraft wings. BLACKBURN & GENERAL AIRCRAFT, Ltd., [formerly BLACKBURN AIRCRAFT, Ltd.]. June 4, 1948, No. 15168. [Class 4] The wings 1 of an aircraft are disposed substantially normal to the longitudinal axis during take-off and landing, and are rotated about pivots 2 at the roots into a swept-back position in which they co-operate with the tail-planes 4 to form a wing of delta shape for high-speed flight. The wings carry landing flaps 7 which nest within root fairings 5 in the swept-back position, and ailerons 6 which are preferably of the split type, in order that they may enclose the leading edges of the tailplanes when retracted. Controllers 8, pivotally mounted on axes parallel to the wing leading edges, provide lateral control when the wings are in the highspeed position. The pivots 2 are preferably so arranged that the wings 1 assume a predetermined dihedral and/or incidence when moved forward to the low-speed position. In order to maintain longitudinal stability when the wings are moved, fuel or ballast is transferred between tanks 13, 14, 16, 17 disposed at the forward and rear ends of the fuselage. An additional tank 15 is situated at the position of the centre of gravity during high-speed flight, during which period fuel is drawn only from that tank. As an alternative to fuel transfer part of it may be jettisoned or, according to the Provisional Specification, a sliding weight may be fitted in the fuselage, linked to the wings so as to be movable therewith.
Patent GB-564601-A (GB)
Title: Improvements in or relating to electronic valves
IPC: H01J19/02
Filed: 1942-10-29
Abstract: 564,601. Discharge apparatus. LIEBMANN, G., and CATHODEON, Ltd. Oct. 29, 1942, No. 15191. [Class 39 (i)] In a multigrid valve having a low potential beam-forming electrode arranged between an accelerator grid and the anode, the beamforming electrode is formed of sheet metal and closely surrounds the accelerator grid to reduce the current taken by that electrode and to provide electrostatic screening for the anode. The electron stream reaches the anode through a slot or slots in the beam-forming electrode opposite the cathode and having dimensions substantially the same as the projected dimensions of the cathode on to the beam-forming electrode. Preferably, the slots are slightly larger in both directions than the cathode. In the construction shown in Figs. 1, 3 and 4, a valve comprises a cathode 13, surrounded by a control grid 14, an accelerator grid 15 and an anode 16, a beam-forming electrode of channelshaped metal strips 17 mounted on rods 19 and secured together with their open faces adjacent, closely surrounding the accelerator electrode. The edges 20, of the channelled strips are folded over for stiffness and define between them a slot of approximately the same dimensions as the cathode. The electrode assembly is carried between mica discs 24 and supported by a screening disc 21 to which the lower mica disc is clipped and which has a depending flange 21a welded to the inner portions of two contact pins 22 moulded into the base of the valve. The upper mica disc is supported by the beam-forming electrodes, and by rods 23 which are welded to the disc 21. The anode-lead and lead-in pin is screened from the remaining electrodes by the flange 21a and the screening is completed by an upper metal shield 29 welded to the rods 23. An external screen may be arranged coplanar with the screen 21 and its flange 21a and further screening may be provided by an internal screen surrounding the anode 16 or by an external screening-can or metal deposit on the valve envelope. In the construction, Fig. 5, the beam-forming electrode is formed with apertures 31 which served as inspection holes for checking the alignment of the electrodes during assembly. In another construction, the beam-forming electrode is stamped out from a single piece of metal, being formed at its ends with integral lugs for securing the mica discs. Stiffening ribs may be formed in the electrode during the stamping process. Specifications 453,137 and 483,827 are referred to.
Patent GB-1038575-A (GB)
Title: Improvements in or relating to refrigeration systems
Inventor: FLEUR JAMES KEMBLE LA
IPC: F02C1/10
Filed: 1964-04-13
Abstract: 1,038,575. Refrigerating. FLEUR CORPORATION. April 13, 1964, No. 15229/64. Heading F4H. Gas from the outlet of a compressor is divided into two streams one of which is utilized to generate power and the other to produce refrigeration, each stream being recirculated to the compressor inlet. As shown, gas from the outlet line 11 of a compressor 10 is divided into separate streams 12 and 13, the latter stream being cooled to ambient temperature at 19, further cooled in a heat exchanger 20 and expanded in a turbine 21. The cooled, expanded gas is passed to a load 24 and returned to the compressor via heat exchanger 20. Stream 12 is heated in a heat exchanger 14, further heated at 15 and expanded in a turbine 17 which drives the compressor 10 via a shaft 35. The expanded gas is returned to the compressor inlet via heat exchanger 14 and a cooler 18 in which the gas is cooled to ambient temperature. Turbine 21 may be coupled by a clutch 37 to the compressor to provide additional power therefor or may drive an electrical generator 22 and a starting motor 34 is provided. Hydrogen, helium, deuterium or neon or mixtures thereof may be used as the working medium and the refrigeration produced may be employed in the liquefaction of gases. Operating pressures and temperatures are given and the factors governing the optimum pressure ratios in the expansion and compression steps and the efficiency of the heat exchangers are discussed.
Patent GB-1148997-A (GB)
Title: Low sudsing detergent compositions
IPC: C11D1/34
Filed: 1968-03-29
Abstract: 1,148,997. Low sudsing detergent compositions. PROCTOR & GAMBLE CO. 29 March, 1968 [31 March, 1967], No. 15236/68. Heading C5D. A low to medium sudsing detergent composition comprises 2 to 30% of an anionic synthetic detergent which is an alkyl sulphate, olefin sulphonate, paraffin sulphonate, alkyl benzene sulphonate or mixture thereof, in which the alkyl radicals contain from 8 to 22 carbon atoms; from 5 to 70% of a per compound bleaching agent; from 2 to 65% of a detergent builder; from 0À05 to 5% of a non-ionic condensation product of one mole of an aliphatic alcohol containing from 12 to 22 carbon atoms and from 3 to 45 moles of ethylene oxide; and from 0À05% to 2À5% of a straight or branched chain, monoalkyl or dialkyl acid phosphate, in which each alkyl group has from 16 to 20 carbon atoms. The anionic detergent is preferably 4- 15% of an olefin sulphonate (12-16 carbon atoms), a coconut and/or tallow alkyl sulphate or a linear alkyl benzene sulphonate (8-18 carbon atoms). Sodium perborate is mainly used as the bleaching agent because it gives the best suds control compositions. Specified builders are sodium, potassium, ammonium and substituted salts of tripolyphosphates, carbonates, tetraborates, hexametaphosphates, pyrophosphates, orthophosphates and bicarbonates; organic builders include aminopolycarboxylates, nitrilotriacetates, polymaleates, polyitaconates, polyacrylate, phytate and polyphosphonates. Usually 1% to 3À5% of one mole of tallow alcohol condensed with 11 moles of ethylene oxide is used as the non-ionic condensation product, in a ratio range of 0À4 : 1 to 25: 1 with the alkyl acid phosphate; which is preferably 0À1% to 0À5% of a mixture of monostearyl and distearyl acid phosphate. The weight ratio of the sum of the non-ionic condensation product and the alkyl acid phosphate to the anionic detergent is preferably 0À2 : 1  to 10:1. These compositions are particularly suitable for use in tumbler and rotating drum type washing machines because they possess a high degree of cleaning power and are relatively low sudsing.