baber/WOPTO huggingface dataset:
Patent GB-229738-A (GB)
Title: Improvements in or relating to means or apparatus for lifting or raising automobiles, and other railway and road vehicles, and the like, and for other lifting purposes
IPC: B66F7/06
Filed: 1923-11-20
Abstract: 229,738. Appleyard of Leeds, Ltd., and Limb, F. Nov. 20, 1923. Stands or supports.-Apparatus intended for lifting either or both ends of motor or other vehicles or other heavy bodies comprises a pair of side members capable of being permanently or temporarily fixed to the framing of the vehicle &c., and sets of lifting levers hinged at their upper ends to the side members and adapted to be drawn together at their lower ends by a screw. The side members 1, Figs. 1 and 2, of the vehicle frame are clamped or otherwise connected to the side members 3 of the apparatus, and to each side member 3 are pivoted two lifting levers 20, 27. The lower ends of the levers 20 enter T-pieces 24 mounted on an axle 22 which also carries at its ends wheels 25 and at its middle part a sleeve 39 with nut 38 for the screw 35. The lifting levers 27 at the other end of the apparatus are pivoted at their lower ends to a yoke 31, the pivot pins also carrying wheels 28. One end of the lifting screw 35 bears in the middle of the yoke, endwise movement being prevented by collars 36, 37. The screw may be rotated for raising or lowering by a handle 41. Each pair of lifting levers 20, 27 is provided with a pair of locking levers 43, 44 having a number of holes into which locking pins 47, also entering holes in the lifting levers, may be inserted. The lifting levers at either end may thus be locked in a raised or a lowered position, and operation of the screw will then affect one end only. To give a greater range of height adjustment, the lifting levers may be telescopic, the telescoping parts being locked by pins to give several alternative lengths. In a modification, the adjustable levers at one end are replaced by arms rigidly connected to the side members 3. The upper ends of the lifting levers 20, 27 may be connected to the side members 3 by the slotted construction shown in Figs. 16 and 17, in which a transverse pin 66 projecting from both sides of the flat tongue 64 on the end of the lifting lever is passed into slots 64<a> in lugs 60 through the entering slots 63. In the modification shown in Figs. 10 and 11, the locking levers are dispensed with and flexible connections 102 are provided for controlling the tilting of the vehicle; the connections include a chain passing over the drum of a small winch which may be operated through worm or other gearing from the handle 123. The lifting screws 74 are duplicated but are operated simultaneously by the transverse shaft 86. The rollers 28 at one end of the apparatus are moulded on swivelling axles and adjusted for steering by the hand-lever 100. Alternative constructions of winch for varying the tilt of the vehicle are described.
Patent GB-139457-A (GB)
Title: Process for scouring fibres of vegetable origin, with the object of accelerating andfacilitating subsequent bleaching
IPC: D06L4/23
Filed: 1919-11-25
Abstract: Consists in improvements in the process described in the parent Specification in case it is intended to use the scouring-bath in the cold.  The reducing-salt is completely omitted from the bath, which consists essentially of a mixture of the caustic soda lye, metallic oxide, or the metal itself, and an alkaline hypochlorite (Eau de Javelles).  The fibres are steeped in the bath by means of pressure rollers, and are then placed in the kier.  The fibres are treated after removal, one or more times in an acid bath. Subsequent bleaching may not be necessary owing to the bleaching action of this scouring-bath.  With fibres difficult to bleach, the operation may be repeated several times, with or without bleaching between two consecutive scourings.
Patent GB-1042177-A (GB)
Title: ontinuous process for obtaining concentrates of naphthalenic hydrocarbons from petroleum fractions
IPC: C10G21/04
Filed: 1963-07-25
Abstract: Napthalenes in a petroleum fraction boiling in the range 200-300 DEG C. are concentrated by introducing the fraction into the central section of an extraction column operated at - 50 DEG  to 5 DEG  C., also introducing liquid sulphur dioxide at the top and a gasoline boiling in the range 80-120 DEG  C. and containing less than 10% by volume of aromatics at the bottom, recovering a naphthalene extract at the bottom and removing sulphur dioxide and gasoline by distillation. The weight ratio of sulphur dioxide to the fraction is 1-15:1 and of gasoline to the fraction 0.3-6:1.
Patent GB-873029-A (GB)
Title: Two-speed driving mechanisms
IPC: F16H1/28
Filed: 1958-09-15
Abstract: 873,029. Variable - speed gear ; friction clutches; toothed gearing. U.S. INDUS TRIES Inc. Sept. 15, 1958 [Jan. 10, 1958], No. 29439/58. Classes 80 (1) and 80 (2). A two-speed epicyclic gear for metal drawing presses comprises a sun 17 fast with an input flywheel 12, a permanently stationary floating " ring-gear 27, and a planet carrier 21, and is controlled by selective energization of high and lowspeed friction clutches 9, 10 which connect the flywheel 12 or planet carrier 21, respectively, to an output shaft 2 for direct or reduced drive. The ring gear 27 floats radially in a fixed casing 47 by an Oldham ring mounting 30 to prevent misalignment of the gears when the shaft 2 is deflected. The air engaged friction clutches 9, 10 are made as detachable units fitted between the flywheel 12 and an end-plate 14 bolted thereto at 15 and between the plant-carrier 21 and an end-plate 23 bolted thereto. Both clutches are identical and comprise a driven plate 55 fast with the shaft 2 and which may be clamped between a pneumaticallyoperated piston 71 and the respective end-plate. The plate 55 has circular openings 60 recessed at 67, Fig. 6, which receive aluminium discs 62 faced with friction material 65, 66 and bored radially at 68 to receive pins 69 the heads 70 of which engage the recess 67, thus preventing rotation of the discs 62 in the holes 60 whilst permitting relative axial movement. The pistons 71 have extensions 73 which project between the bolts 15, 24 and are axially slidable on bolts 74 in the respective flywheel 12 or planet carrier 21. The low-speed clutch 10 is engaged by supplying pressure air to a cavity 78 sealed by a diaphragm 79, from a supply 88 through an air seal 85 (of the type described in Specification 847,749) and duct 83, and the high-speed clutch 10 is similarly engaged by a supply 93. The gear may be lubricated by supplying oil at 98.
Patent GB-687852-A (GB)
Title: Concentration of acrolein and methacrolein
IPC: C07C45/82
Filed: 1949-11-19
Abstract: Acrolein and methacrolein produced by the catalytic oxidation of propylene and isobutene respectively, are recovered from their dilute aqueous solutions by distillation under reduced pressure, e.g. 200-400 mm. Hg, to prevent polymerization in the still. The pH of the solution is adjusted if necessary to between 5 and 8, preferably between 6 and 7.  Small quantities of hydroquinone, i.e. 1/20 th that required for full oxygen saturation in the still feed, may be added to the still-head to further reduce the polymerization and extend the time of operation of the still. Examples are given using an apparatus comprising a glass kettle with a length of glass tube serving as a stripping column surmounted by a second tube acting as a rectifying column, both tubes being packed with rings.  In examples 1 and 2 solutions containing from 0.3 to 0.4 per cent by weight of acrolein were distilled at a pressure of 400 mm. Hg, with a kettle temperature about 83 DEG  C. and a still head temperature about 35 DEG  C., hydroquinone in acrolein being introduced into the still head in example 2.  In examples 3 and 4 methacrolein was distilled at 400 mm. and 250 mm. pressure respectively and with still head temperatures of 47 DEG  and 37 DEG  C., and kettle temperatures of 83 DEG  and 75 DEG C. respectively.  In example 4 hydroquinone in methacrolein was added to the still-head.  In all examples the pH ranged from 6 to 7.  The stills ran for 8 days up to 51 1/2 days with only slight polymer formation.ALSO:Acrolein and methacrolein produced by the catalytic oxidation of propylene and isobutene respectively, are recovered from their dilute aqueous solutions by distillation under reduced pressure, e.g. 200-400 mm. Hg. to prevent polymerization in the still.  The pH of the solution is adjusted if necessary to between 5 and 8, preferably between 6 and 7.  Small quantities of hydroquinone, i.e. 1/20th that required for full oxygen saturation in the still feed, may be added to the still-head to further reduce the polymerization and extend the time of operation of the still. Examples are given using an apparatus comprising a glass kettle with a length of glass tube serving as a stripping column surmounted by a second tube acting as a rectifying column, both tubes being packed with rings.  In examples 1 and 2 solutions containing from 0.3 to 0.4 per cent by weight of acrolein were distilled at a pressure of 400 mm. Hg., with a kettle temperature about 83 DEG C and a still head temperature about 35 DEG C, hydroquinone in acrolein being introduced into the still head in Example 2. In Examples 3 and 4 methacrolein was distilled at 400 mm. and 250 mm. pressure respectively and with still head temperatures of 47 DEG C and 37 DEG C and kettle temperatures of 83 DEG C and 75 DEG C respectively. In Example 4 hydroquinone in methacrolein was added to the still-head.  In all examples the pH ranged from 6 to 7.  The stills ran for 8 days up to 51 1/2 days with only slight polymer formation.
Patent GB-638981-A (GB)
Title: Improvements in or relating to the production of thermo-plastic mouldings such as artificial teeth
IPC: A61C13/08
Filed: 1946-10-04
Abstract: 638,981. Moulding artificial teeth &c. by injection. MATHER, R. Oct. 4, 1946, No. 29712. [Class 87 (ii)] [Also in Group VI] Articles such as artificial teeth formed of two or more differently coloured or differently tinted plastic materials are moulded by successively introducing the different materials into the mould, at least the last being injected into the mould and the temperatures of the materials and the mould being such that merging of the materials will occur at their meeting face or faces. A number of moulds 13 may be formed between mating blocks 10, 11 and connected by channels 17 to a central chamber 14. Spherules of plastic such as polymethyl-methacrylate may be run down the channels to partly fill the moulds and a second material heated in the chamber 14 and injected to fill the moulds by the plunger 15. The blocks 10, 11 may be heated by means incorporated therein to plasticise the solid material in the moulds and chamber 14 or the injected material may be heated to excess before injection to ensure the required heating of the solid material in the mould. Alternatively the differently coloured materials may be placed in layers in the chamber 14, heated and injected successively, but in one operation, into the mould. In this case, the channels 17 are horizontal. The material may be heated to the required degree by pressing it with the plunger against the part 12 which alone is heated, material flowing into the mould as it becomes plasticised. Pressure is maintained on the material in the mould while it cools. Cooling may be hastened by circulating cooling fluid in the channels 16, the cooling being so arranged that the parts remote from the feeding channels cool first.
Patent GB-340569-A (GB)
Title: Improvements in or relating to high frequency receiving systems
IPC: H03D7/02
Filed: 1929-10-02
Abstract: 340,569. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London. -(Assignees of Heising, R. A. ; 2, Duncan Street, Millburn, New Jersey, U.S.A.) Oct. 2, 1929, No. 29848. Convention date, Feb. 6. [Class 40 (v).] Relates to shortw a v e heterodyne reception in which an intermediate frequency is derived by combining the incoming signals with a local oscillation of approximately half the s i g n a l frequency, and consists in means for increasing the effective amplitude of the resulting beat frequency. The desired effect is produced by applying to the first rectifier a grid bias of such value that current only flows during the peaks of the local oscillations, and a bigger proportion of the resultant combination wave is suppressed when the signal and local oscillations are 180‹ out of phase than when they are in phase. In this way the resultant intermediate-frequency wave attains a current amplitude comparable with that obtained when the local oscillations are of substantially the same frequency as the incoming waves. In Fig. 2, W and W1 represent two half-cycles of the signal wave superposed upon a local oscillation O of half the signal frequency. When W and O are in phase the resultant is represented by the curve F ; when W1 and O are out of phase the resultant wave is F1. By applying a grid-bias corresponding to P, the portion of the resultant curve below the line 9, 10 is eliminated, with the result that the effective value of the minimum curve F1 is diminished relatively to the value of the maximum curve F, thus increasing the amplitude of the resulting beat frequency. As shown in Fig. 6, the signal frequency f1 is applied in parallel to the grids of the two valves 19, 20, the local frequency 14 being applied to the plate circuits. Here both halfcycles of the local oscillations from 14 are effective, with a corresponding gain in the amplitude of the resulting beat frequency. If the amplitude of the local oscillations is sufficiently large, the directcurrent supply 22 to the plates of the valves 19, 20 can be cut-out by the switch 21.
Patent GB-520243-A (GB)
Title: Internal combustion engines of the compression ignition type
IPC: F02B3/06
Filed: 1938-10-15
Abstract: 520,243. Oil engines. GOODMAN, J. H. Oct. 15, 1938, No. 29891. [Class 7 (iii)] [Also in Group XXVI] In an opposed-piston engine, a fuel injector 51 mounted in one of the pistons injects fuel into a combustion chamber 48 in the opposed piston. Oil for injection and for cooling the pistons is supplied by passages 57, 58, 60, 62, 64, 65 to a space 66 in the piston, and returns by passages 67, 68, 69, the injection being obtained by a pump 75 arranged in the piston and actuated by a lever 86 engaging an adjustable fixed cam 88 ; or the lever 86 may be actuated by a cam driven by chain or other gearing. The pump 75 draws oil from the passage 67 and injects it into a space 78 around the injection' needle valve 79, which is raised by the fuel pressure, against the action of a blade spring 80, so as to open small grooves in the conical seat 83 which may be inclined for whirling the fuel. The invention is shown in connection with an engine as described in Specification 513,381, in which the pistons 6, 7 of a pair of working cylinders 2, 4 are connected to rockers 10 on shafts 8, 9 which have arms 14 connected by rods 15 to crank shafts 12, 13, geared at 16 to rotate in opposite directions. Two similar compressor cylinders are provided, and these supply air to the.inlet ports 24, which is compressed into the chambers 48. The projecting nozzles 49 of the injectors enter the mouths 50 of the chambers 48, after which the air is compressed through nozzles 47, preferably inclined to whirl the air. Exhaust takes place through ports 25. The combustion chamber 48 may be spherical, or of the form developed by rotating a circle about a tangent or chord.
Patent GB-1185336-A (GB)
Title: Gas Filtering Bag.
Inventor: SARE CARL R
IPC: B01D46/04
Filed: 1967-06-28
Abstract: 1,185,336. Gas filter. W. W. SLY MFG. CO. 28 June, 1967 [14 July, 1966; 25 July, 1966], No. 29911/67. Heading B1T. [Also in Division E2] Flat, rectangular sectioned filter bags 20 are located in a common housing with their open mouths between uprights 22, respective side  flaps 78 on the mouths of two adjacent bags overlapping one another, with spaced pins 88 on upright 22 extending through aligned holes in the flaps and a spring metal clip 92, attached to one side flap of each bag, overlapping the side flaps (Fig. 5, not shown). Side flaps 78 are reinforced by rods 91 and the leg 100 of clip 92 engages internal spacers 36 which hold the bag walls apart during inward filtering flow. The rear ends of bags are supported by hooks 35 on a common bracket 27 in the housing (Fig. 1, not shown). Additional flaps (82) are provided on the other two sides of the bag mouth and have apertures (90) .  for additional securing by bolts (Fig. 2, not shown). The housing has a filtered gas outlet fan (19) and a reciprocating nozzle (52) which supplies reverse flow gas, under supply pressure or by virtue of reduced pressure in housing, to successive bags, the nozzle making a sliding seal with the aligned clips 92 by means of resilient wiper blades or rollers (Figs. 6, 7, not shown).
Patent GB-506914-A (GB)
Title: Improved securing device
IPC: B25B31/00
Filed: 1937-11-02
Abstract: 506,914. Fastenings ; riveting. GILBERT, G. F. L. Nov. 2, 1937, No. 29956. Convention date, Jan. 25. [Class 44] [Also in Group XXIII] A device for temporarily holding together two drilled sheets, comprises a spring member 5, 6, 7 of which the parts 5, 6 form a conical surface interrupted by a recessed portion 10 and a spear-headed rod 4 urged upwards by a spring 16. When the rod 4 is pressed downwards to remove the spear-head from between the parts 5, 6 the device can be inserted through holes in the sheets. When the rod 4 is released the spring 16 causes the spear-head to separate the parts 5, 6 and the plates are held. The strength of the spring can be varied by means of the nut 15.
Patent GB-843786-A (GB)
Title: Process and apparatus for producing carbon black
IPC: H02K3/51
Filed: 1956-10-02
Abstract: In an arrangement of two or more furnaces, for the continuous production of carbon black from an oil, having a common oil supply and carbon black recovery means, each furnace having an oil feed pipe terminating in an injection nozzle having a ring of diverging apertures, the oil feed to each furnace oil feed <PICT:0843786/III/1> pipe is periodically replaced by oxygen-containing gas so as to burn off deposited carbon, one or two furnaces being thus treated at a particular time while the remainder continue to produce carbon black. The flow of oxygen-containing gas in each oil feed pipe may continue for 15-60 minutes.  During carbon black production the oil, which may be preheated, may be injected into the furnace at a temperature above 500 DEG C., e.g. 725-775 DEG C.  As shown, air and oil are supplied alternately from lines 38 and 36 respectively to a pre-combustion chamber 14 via an oil feed pipe 18 and nozzle 22 having a ring of diverging apertures 24. Simultaneously air is injected as an annular stream around the nozzle via inlet 26 and a combustible mixture of air and fuel gas is injected tangentially into chamber 14 from one or more burners 16.  Reaction to produce carbon black is continued in chamber 15. During burning off of deposited carbon the rates of injection of annular air and tangential mixture of air and fuel gas may be different from those during carbon black production.  Fig. 3 (not shown) illustrates an arrangement of five furnaces.
Patent GB-485984-A (GB)
Title: Improvements in or relating to the interconversion of side-valve and overhead-valve internal-combustion engines
IPC: F01L1/12
Filed: 1937-11-02
Abstract: 485,984. Cylinders ; valve gear. BAYERISCHE MOTOREN WERKE AKT.- GES. Nov. 2, 1937, No. 29995. Convention date, June 14. [Classes 7 (ii) and 7 (vi)] A side-valve engine is converted into an overhead valve engine, by replacing the cylinder head by a head having a hemispherical combustion-chamber and inclined poppet valves 4, 5, which are operated by the same cam shaft 1 through two push rods 2 and rockers 3, 7, 8, an intermediate link 6 being provided for the valve 5.
Patent GB-794759-A (GB)
Title: An electric fire alarm device
IPC: G08B17/06
Filed: 1955-10-20
Abstract: 794,759. Electric automatic fire alarms. HOMMA, J. Oct. 20, 1955 [June 1, 1955], No. 30011/55. Class 118 (1). An electric automatic fire alarm device for attachment to a wall of the room to be protected, has a vertically movable pin 9 to which a weight 16 is attached by means of a Wood's metal jointed strip 18, the weight 16 acting through a coil spring 7a seated on a sleeve 23 which may slide on the pin 9 and is provided with a contact strip 5 which normally closes contacts 11, 12 as shown, the sleeve 23 being partly supported by a spring 7 so that the contacts 11, 12 do not take the whole of weight 16. The device mounts an alarm bell 25 and may be tested by lifting a knob 10 fixed to the pin 9 to make alarm contacts 13, 14 in circuit with the bell 25. In operation, when an alarm temperature is reached the Wood's metal joint melts, the weight 16 drops, and the contact plate 5 is urged upwardly by the spring 7 to make contacts 13, 14, sound the bell 25 and light a remote warning lamp. In Fig. 4 several alarm devices are shown in parallel, each protecting a room. If one of the devices operates its plate 5 rises to break the contacts 11, 12 and remove the shunt circuit from its respective remote warning lamp GAGD, which lamp then lights as it is put into series with a resistance RA-RD across the supply. At the same time the plate 5 makes across contacts 13, 14 to sound local and central bells 25A-25F.
Patent GB-417701-A (GB)
Title: Process and apparatus for the pasteurization of milk and similar liquids
IPC: A23C3/033
Filed: 1933-10-30
Abstract: 417,701. Pasteurizing milk &c. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm. Oct. 30, 1933, No. 30068. Convention date, Oct. 29, 1932. [Class 49.] In pasteurizing milk and similar liquids by heating indirectly by means of steam at reduced pressure, the pressure is kept constant so that a constant pasteurization temperature is obtained. As shown, the milk is passed through pipes 4, Fig. 1, connected to form a continuous line and surrounded by a jacket 5 to which steam is supplied through an inlet 6 and from which the condensate is removed through an outlet 7. The reduction in pressure is produced by a water jet device 2 connected with outlet 7 through pipes 8, 9. Steam is supplied through a suction jet device 3 from a pipe 12 and passes to the inlet 6 through a mixing nozzle 11 which is connected to pipe 8 by a pipe 10. The steam supply is controlled by a valve 13 kept closed by a spring 14 and opened on a fall of pressure in the jacket 5 by a rod 16 actuated by a bellows 17. The entering steam sucks into nozzle 11 through pipes 8, 10 moist, chilled steam leaving with the condensate through outlet 7 and has its temperature reduced to that corresponding to the saturation temperature of the steam at the pressure prevailing in the jacket 5. The milk assumes a somewhat lower temperature than this, which can be regulated by varying the tension of spring 14 by adjusting screw 19. A membrane, piston &c. may replace bellows 17. To balance valve 13 under the varying loads occurring, it may be made as an ordinary balanced valve with two seats or may have a boring and valve seat 20, Fig. 2, shut off when the valve is in closed position by a ball 21 and a spring 22. The rod 16 fits in the boring and has at its end a pin 23 which extends through seat 20 and contacts with the ball 21 when the rod is actuated by the bellows so that the chamber 24 behind the valve will be evacuated before the valve is opened by rod 16.