baber/WOPTO huggingface dataset:
Patent GB-445856-A (GB)
Title: Improvements in form-stable thermoplastic compositions and articles made therefrom
IPC: C08G8/00
Filed: 1934-08-18
Abstract: The plasticity of polyvinyl esters or condensation products of partially or wholly hydrolyzed polyvinyl esters with aldehydes is reduced by mixing therewith a permanently fusible phenol-aldehyde resin which has been freed from uncombined phenol and phenolic condensation products of low molecular weight.  With the simple polyvinyl esters, the amount of phenol-aldehyde resin added lies between one-ninth and two-thirds by weight of the polyvinyl ester. The phenol-aldehyde resin may be made from phenol, cresol, xylenol or other phenolic bodies and acetaldehyde, e.g. paraldehyde, or other aldehydes, by condensation at a temperature below 10 DEG  C. in the presence of a mineral acid, e.g. concentrated hydrochloric acid, until the mixture becomes viscous.  The mixture is then boiled with excess of an aqueous solution of a sulphite, e.g. an alkali bisulphite, to neutralize the acid and to destroy any traces of aldehyde resin, washed, heated at 100 DEG  C. to remove water, and in vacuo at 200 DEG  C. to remove condensates of low molecular weight. Examples of this preparation refer to the use of sulphuric acid as catalyst, which is removed by barium sulphite, the barium salts being eliminated in a final step of dissolving the resin and centrifuging the solution; to the use of a mixture of sulphuric and acetic acid, acetaldehyde being introduced in a stream of cooled inert gas. Further examples are given illustrating the addition of cresol - acetaldehyde or phenol - formaldehyde resin to polyvinyl acetate to a condensation product of 70 per cent hydrolyzed polyvinyl acetate and acetaldehyde, and to mixtures thereof.
Patent GB-1333517-A (GB)
Title: Cold-junction compensator for multiple thermocouples
IPC: G01K7/12
Filed: 1972-05-22
Abstract: 1333517 Thermocouple cold junction compensators MERESTECHNIKAI KOZPONTI KUTATO LABORATORIUM 22 May 1972 [10 Aug 1971] 23894/72 Heading H1K A cold junction compensator for a thermocouple consists of an enclosure of high thermal capacity containing a heat distributor on which is mounted a bridge unit producing a compensating e.m.f., the bridge comprising temperature sensitive resistors consisting of a combination of two metals associated with sections of leads of the same materials as the respective limbs of the thermocouple forming part of the connection between the bridge and the thermocouple to improve the transient response. The enclosure comprises a double walled container (1,2) with the wall space filled with heat insulating material (3). The heat distributer comprises a flat plate (4) having high thermal conductivity and capacity on which terminal units (7) are secured to form the cold junctions of thermocouples (8) which extend into the enclosure. A linearized bridge unit (9) is also mounted on the heat distributer and is fed from a stabilized supply (10) to provide an e.m.f. which varies to compensate for the temperature variations of the terminal blocks. As shown, Fig. 2, the bridge unit comprises a ceramic tube 13 on which are wound Pt resistors 11, linearizing Cu resistors 12 and lead sections 14, 15 of the same material as the respective thermocouple limbs. A Cu tube 10 surrounds these components which are connected together with balancing resistors to form a bridge which is fed from an external stabilized source 10 via a current adjusting device 18. The compensating output produced at terminals 17 may be switched by a unit 21 to any one of a plurality of the thermocouple terminal units 7 mounted on the heat distributer (4) and thus being at the same temperature as the bridge sensor units. A suitable measuring instrument 23 is connected in series with one of the bridge outputs to indicate the corrected thermocouple output.
Patent GB-702795-A (GB)
Title: Improvements in or relating to centrifugal blowers for comminuting and conveying agricultural produce and like material
IPC: A01F29/06
Filed: 1951-10-15
Abstract: 702,795. Cutting chaff &c. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT EXPLOITEREN VAN OCTROOIEN EN LICENTIES MATEPA. Oct. 15, 1951 [Oct. 16, 1950], No. 23916/51. Class 5 (1). [Also in Group II] A chaff &c. cutter adapted to function as a centrifugal blower for the purpose of conveying the comminuted material comprises an outer casing 3 having an inlet 2 and an outlet 8, and a drum 5 carrying cutter elements 4 having both long and short teeth the cutting edges of which are parallel to the drum axis, the inner wall of the casing presenting to the cutter elements during passage of the latter between the inlet and outlet initially a stationary cutter bar 13 with a straight cutting edge parallel to the drum axis for co-operation with the cutting edges of the long teeth, and subsequently a stationary cutter bar 14 of comb-like formation having cutting edges parallel to the drum axis for co-operation with the cutting edges of both the long and the short teeth. The casing between the inlet and cutter bar 13 forms a flap 16 adapted to pivot at 17 outwardly in opposition to an adjustable spring 18 to enable hard objects to escape from the casing without damage to the cutting edges. The flap is guided between side walls 19 which are also adapted to pivot outwardly when the flap makes contact with a stop 21 carried thereon. The inlet is in the form of a hopper. The outlet may be connected either to an inclined duct 9 or to a vertical duct 10. The cutter is mounted on a wheeled carriage 1.
Patent GB-170979-A (GB)
Title: Improvements in or relating to rail keys
IPC: E01B9/58
Filed: 1920-08-17
Abstract: 170,979. Mehta, P. M. Aug. 17, 1920. Chair keys and wedges with separate end plates.-A wooden railway chair key a is provided with an iron cap c fitted to the larger end and held in place by a strap b of hoop iron riveted to the cap at d.
Patent GB-449725-A (GB)
Title: Improvements relating to loose covers for upholstered seats
IPC: A47C31/11
Filed: 1935-08-27
Abstract: 449,725. Securing loose covers to seats. REYNOLDS, A. T., 416, 47th Street, Brooklyn, New York, U.S.A. Aug. 27, 1935, No. 24009. Convention date, Aug. 29, 1934. [Class 52 (iv)] A loose cover 15 has a part extending between the back and seat cushions of a chair and secured to a transverse rail 21 mounted in the chair frame. The cover is preferably extended over the chair back to hide the rail. U.S.A. Specifications 1,908,233 and 1,933,372 are referred to.
Patent GB-443214-A (GB)
Title: Improved method of applying coatings of alkali or alkaline earth metals
IPC: H01J40/06
Filed: 1934-08-20
Abstract: Coatings of alkali metals or alkaline earth metals are formed by dissolving one or more of the metals in liquefied ammonia, applying the solution to the surface to be coated, and evaporating the ammonia either by reducing the pressure or by raising the temperature.  The process is particularly applicable to forming coatings on the electrodes of photo-cells, and sensitizers or activators such as zinc or cadmium may be mixed with the alkali or alkaline earth metals. The metals may be placed in a container communicating with the photo-cell, and the whole apparatus cooled to the liquefying temperature of ammonia.  Ammonia is then passed in and the metals dissolve.  The solution is forced into contact with the electrode by the pressure of inert gas, and the container is then disconnected from the cell.  The ammonia is then caused to evaporate, e.g. by raising the temperature slowly in an inert atmosphere, and may be passed back into the container.  The coating of glass bulbs and wire spirals is also referred to.
Patent GB-1304947-A (GB)
IPC: C07D211/14
Filed: 1970-07-14
Abstract: 1304947 Derivatives of cycloprop[a]indene and cyclopropa[a]naphthalene A H ROBINS CO Inc 14 July 1970 [16 July 1969] 34147/70 Heading C2C The invention comprises cis and trans isomers of compounds of formula and their acid addition salts, where "SUB" is 4-phenylpiperazinyl, 4-phenylpiperidinyl, 4- benzylpiperidinyl, 4 - phenyl - 1,2,3,6 - tetrahydropyridinyl, 3-phenylpyrrolidinyl or 3- phenyl-3-pyrrolinyl, n is 1 or 2, and each "phenyl" may be monosubstituted by C 1-8  alkyl or alkoxy, CF 3 , F, Cl or Br. The trans-isomers are prepared by reacting the cyclopropindene- or cyclopropanaphthalene - carboxylic acids (II) with a thionyl halide, reacting the acid halide so formed with H-(SUB) (III) and reducing the amide thus obtained with LiAlH 4 . The cisisomers are prepared by reacting together equimolar amounts of cis-II, III and dicyclohexylcarbodiimide, and reducing the amide with LiAlH 4 . II are obtained by alkaline hydrolysis of the ethyl esters; the products may be resolved into cis- and trans-isomers by fractional neutralization of an alkaline solution, using HC1. Therapeutic compositions for oral or parenteral administration comprise compounds of the above formula, which have anti-inflammatory activity.
Patent GB-769429-A (GB)
Title: Improved apparatus and method for cleaning coal or other granular material
Inventor: HIRST ARTHUR ALGERNON
IPC: B04C5/18
Filed: 1953-09-01
Abstract: 769,429. Washing granular material. COAL INDUSTRY (PATENTS), Ltd. Sept. 1, 1954 [Sept. 1, 1953], No. 24159/53. Class 82(2) Apparatus for cleaning granular material comprises a separating vessel with a conduit for admitting liquid at the bottom, an overflow for liquid and solids, a conduit admitting liquid at a level intermediate the overflow and the bottom, means for feeding granular material, with or without liquid, at a level above the intermediate level, and means whereby, when the pressure head of liquid admitted at the bottom exceeds a predetermined value, some or all of this liquid is diverted and admitted to the vessel at the intermediate level. As shown, applied to the cleaning of coal, a separating vessel comprises a lower conical chamber 1, an upper conical chamber 1A and a feed pipe 2A for coal slurry connected to a conical chamber 2 below the chamber 1A. Water is supplied to the chamber 1 through a pipe 4A and a spigot 7C in a chamber 4 and also through a pipe 3A arranged at a higher level in the chamber 1. The pipes 3A and 4A are connected to head boxes 3C and 4C respectively, the head boxes being connected by a weir 5. The water supply at 3A and 4A may be made to pulsate by air pressure through pipes 3D and 4D. In operation a quicksand of fine refuse is formed in the spigot 7C and as density of this quicksand increases the pressure head in the headbox 4C also increases until water in the box 4C overflows the weir 5 and is supplied to the vessel through the pipe 3C. Some of the quicksand flows through the spigot 7C and is discharged and conditions in the spigot return to the earlier state: A constant height of quicksand is thereby maintained. The coal slurry may be fed into the vessel tangentially to produce a swirl in the vessel, and pulsations may also be applied to the liquid in the vessel. The invention may also be applied to Chance washers Fig. 5 (not shown) and the Menzies washers Fig. 4 (not shown).
Patent GB-462003-A (GB)
Title: Improvements relating to conveyors
IPC: B65G37/00
Filed: 1935-08-30
Abstract: 462,003. Endless conveyers. CADMAN, H. W., and SOVEX, Ltd. Aug. 30, 1935, No. 24235. Addition to 398,017. [Class 78 (i)] The endless conveyer band constituting the con. veyer proper of the parent Specification is modified in that it consists of an endless conveyer of the slot. type. In the embodiment shown, the conveyer comprises wooden slats 6 which are mounted at each end on lugs 7 integral with chain links 8 guided by flanged rollers 11 on flanges 9 of angle bars 10.
Patent GB-496932-A (GB)
Title: Improvement in anti-skid device for vehicle wheels
IPC: B60C27/08
Filed: 1938-08-17
Abstract: 496,932. Wheel tyres. ROTH, A. F. Aug. 17, 1938, No. 24259. [Class 144 (ii)] A tyre gaiter comprises a flexible strip 1, formed of rubber with textile or metallic fabric reinforcement, is fitted with rivets 13 having conical heads 19 of hardened metal projecting from bosses 8 disposed in annular recesses 7 in the tread surface of the strip. The latter may be formed with rubber studs 11 arranged around the recesses 7, and with cavities 20. The tyre-engaging surface of the strip may be provided with conical rubber projections 6. The gaiter is shown fitted with straps for attachment to the wheel.
Patent GB-695768-A (GB)
Title: Improvements relating to disazo dyestuffs
IPC: C09B35/227
Filed: 1951-10-18
Abstract: 4 : 41-Dichloro- and -dibromo-2 : 21-diamino-diphenyl sulphide are made by reducing the dinitro compounds, obtained from 1 : 4-dihalo-2-nitrobenzene and sodium sulphide.  The dinitro-sulphides can be oxidized with dilute nitric acid to dinitro-sulphoxides, whence by reduction are obtained 4 : 41-dichloro- and -di-bromo-2 : 21-diamino-diphenyl sulphoxide.ALSO:The invention comprises disazo dyestuffs from tetrazotized diamines of the formula <FORM:0695768/IV (c)/1> (X = -S- or -SO-; Hal = Cl or Br) and 2 mols. of 2-amino-8-naphthol-6-sulphonic acid by acid coupling.  They dye natural keratin and artificial protein fibres in blue-red shades. Examples show the diazotization of the two dichloro compounds of the above formula and coupling with g -acid.  A further example describes the dyeing of wool with the dyestuff from the dichloro-sulphoxide. The dibromo compounds are also mentioned. Specification 558,219 [Group IV] is referred to.
Patent GB-1267563-A (GB)
Title: Change-over valve
Inventor: HEINIG WERNER
IPC: F16K1/44
Filed: 1969-05-13
Abstract: 1,267,563. Valves. MASCHINENFABRIK KYFFHAUSERHUTTE ARTERN VEB. 13 May, 1969, No. 24340/69. Heading F2V. Changeover valve for food products such as milk, has a valve member with relatively movable heads 7, 8 carrying respective seals 7a, 8b which seat on a single seat. In closed position as shown, leakage past the first seal 8a from an inlet 12 and chamber 13, is collected in the space between the heads and withdrawn through a tubular inner stem 2 which carries the head 7. In order to clean the valve by circulating a cleaning liquid, the inner stem is locked to an outer sleeve stem 3 carrying the other head 8 so as to maintain the collection space open and in communication with the stem 2. The valve is then opened and the path between inlet 12 and an outlet 11 cleaned simultaneously with the leakage removal path. A removable locking device (not shown) is inserted in registering slots 4a, 4b in the two stems. As shown, the inner stem 2 passes through a pneumatic actuator 6. It is stated that the valve can open in response to a higher temperature of the milk coming from a heater, simultaneously closing a by-pass valve 9 to a return outlet 10. When the milk temperature is low the position reverts to that shown and the return outlet is open.
Patent GB-231924-A (GB)
Title: Improvements in boring or drilling mechanism for use in the manufacture of annular pieces such as the bases of combs for wool combing and like machines
IPC: B23B41/00
Filed: 1924-08-05
Abstract: 231,924. Rhodes & Co., Ltd., R., Bowers, T., and Carrick, R. Aug. 5, 1924. Drilling-machines. - In a multiple-spindle drilling-machine for drilling annular articles such as comb-circles, the drills are fed forwards by solenoids and are retracted intermittently by cams, and indexing mechanism for the work is provided whereby another solenoid is energized to withdraw a stop from the work-rotating train only when all the drills have passed completely through the work. The comb-circle 6 is secured to a face-plate 5 and the drill-spindles 3, of which one only is shown, are driven either by separate belts 7 from a common shaft or by toothed or friction wheels from a central wheel on the axis D. Each spindle is mounted on a slide 2<a> which is constantly pressed forwards by the core of a solenoid 8 and a lever 9 pivoted at a, and is retracted by a cam 10 rotated through gearing 15 from a shaft 20. When each drill passes through the work a pawl 22, Fig. 7, drops over a shoulder e on a lever 23 so that on the next retraction of the slide 2a a plunger 25 makes contact at 30 to energize a solenoid 51, Fig. 1, which rocks a lever 49 and raises a spring-depressed plunger 46 out of engagement with a stop on a disc 36, the disc then being free to be rotated by a belt 34 and to actuate, through gearing 39, 43, a worm 45 meshing with teeth on the face-plate 5. The contacts 30 are arranged in series so that the work is not rotated until all the drills have penetrated. The work is thus positioned for a new set of holes and the plunger 46 descends again to prevent the disc 36 from making more than one revolution, the belt 39 being allowed to slip.
Patent GB-232122-A (GB)
Title: Improvements in dumb castors for furniture
IPC: A47B91/06
Filed: 1924-10-15
Abstract: 232,122. James, J. H. Oct. 15, 1924. Ferrules.-A dumb-castor, for attachment to the legs c of furniture, consists of a sheetmetal disc a stamped or pressed to present a convex under face and provided with a turned-up peripheral flange b, which closely encircles the leg. The castor is secured to the leg by a screw d or nail seated in an apertured depression e in the castor. The screw may be loose as shown in the Figure, or it may be permanently but swivelly secured to the castor.
Patent GB-277684-A (GB)
Title: Improvements relating to unidirectional electric current-carrying devices
IPC: H01L21/16
Filed: 1927-09-16
Abstract: 277,684. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Martin, G. F., and Westinghouse Electric & Manufacturing Co.). Sept. 16, 1926, [Convention date]. Drawings to Specification. By solid unidirectional conducting devices; condensers.-In an asymmetric conducting device of the copper-copper oxide type, a neutral contact with the oxide coating on the copper elements is produced by reducing a portion of the oxide coating to form a conducting element of reduced copper. The copper blanks are heated in an oxidizing atmosphere to temperatures from 500 to 1000‹ C. to produce a layer of cuprous oxide covered by a layer of cupric oxide thereon, and after cooling to a temperature dependent on the quenching medium to be employed, are quenched in a medium which decomposes to form a reducing agent which converts the cupric oxide layer to metallic copper. Mineral or vegetable oils or mixtures thereof, gasoline, and alcohol are given as examples of quenching media. The coatings are then removed, as by sand blasting, from one side and the peripheries of the copper blanks which are then assembled on an insulated bolt to form a rectifier. Two rectifiers may be connected in opposition to form a condenser.
Patent GB-890376-A (GB)
Title: Improvements in or relating to cooling
Inventor: TATTERSALL GEOFFREY HOWERD
IPC: B21C9/00
Filed: 1958-07-30
Abstract: 890,376. Drawing. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Aug. 27, 1959 [July 30, 1958], No. 24534/58. Class 83(4). A method of cooling a material comprises passing it through a fluidized bed which consists of or includes a lubricant for the material and which is at a lower temperature than, and in direct contact with the material. An apparatus comprises a double-walled tank 2, in which water circulates between the walls, containing soap powder which is maintained in a fluidized condition by air blown into the tank through pipes 10 and distributers 11. The tank is divided into four chambers 6, 7, 8 and 9 by partitions 5. A capstan 3 revolves on an angularly disposed shaft 4 and the wire enters and leaves the capstan at the part of the periphery which is above the soap powder, to prevent soap being picked up by the wire and compressed against the capstan. In a further embodiment (Fig. 3) a plurality of capstans 21 and dies 23 are arranged in a tank containing soap powder which is fluidized by air blown through pipes 30 and a distributer 29. The tank comprises a top section 20a and a bottom section 20b which can be lowered to facilitate threading of the dies 23. The capstan and dies are just submerged when the powder is fluidized and to prevent soap being picked up and compressed against the capstan, an air blast from nozzles 24 is directed at the wire. The capstans may be internally water-cooled.
Patent GB-1280128-A (GB)
Title: Filled casings
Inventor: SCHILLING EUGENE DUDLEIGH
IPC: A22C13/00
Filed: 1971-04-19
Abstract: 1280128 Filled casing GENERAL MILLS Inc 19 April 1971 [18 March 1970] 24580/71 Heading A2B A filled casing is prepared by forming a plastic mass from an aqueous liquid and a proteinaceous substance having a protein content of at least 65 wt %, the said proteinaceous substance comprisin gat least 50 wt % of a particulate non-heat-coagulable simple protein source material having a protein content of at least 65 wt %, for example wheat gluten or keratin, extruding the plastic mass at an elevated temperature through an annular die into a gaseous medium so as to form a casing, and, simultaneously with the extrusion, introducing a flowable material, for example water, corn syrup, liquid oil, gelatin, jam, jelly, meat emulsion, mustard, tomato sauce, peanut butter, or a pudding or cooking dough, as filling within the space formed by the casing as it is formed.
Patent GB-536871-A (GB)
Title: Improvements in or relating to variable speed transmissions
IPC: F16H29/08
Filed: 1939-08-28
Abstract: 536,871. Variable speed ratchet gearing. MORSE CHAIN CO. Aug. 28, 1939, No. 24699. Convention date, Sept. 28, 1938. [Class 80 (ii) ] An infinitely variable gear comprises a number of transmitting units arranged around the axis of a driving cam 11 coaxial with a driven gear 15, each transmitting unit unit comprising a bellcrank lever 12 fulcrumed at 20 for oscillating movement caused by the cam and connected by a link 21 to an arm 25 of a ratchet clutch 13 driving a gear 14 adapted intermittently to transmit unidirectional rotation to the gear 15, and means for varying the distance between the fulcrum 20 and the link-to-arm pivot 24 in order to vary the transmission ratio. The link 21 and the lever arm 23 are of equal length and the transmitting unit is movable from the position shown in Fig 3, in which the fulcrum 20 is on the axis of the ratchets 13, to a position in which the fulcrum 20 is co-axial with the pivot 24 and the ratchet stroke is reduced to zero As shown, the cam 11, carried by a driving shaft 10, has a cam groove 59 engaged by rollers 60 on the arms 61 of the bellcranks 12, the fulcrums 20 of which are journalled in a pair of spiders 48 secured to a ring 49 adjustable manually by means of a worm 53 about the axis of the cam 11. The ring gear 49 turns between flanges 52 on the cover plate 32 and on a spider 37 in which the driven shaft 16 is journalled at 36 and the driving elements 43 of the ratchets 13 are journalled in bushings 45. The bell-cranks 12 and links 21 are arranged so that each in turn occupies the central space between the driving and driven members of the gear. In order to obtain uniform transmission ratio for any position of adjustment, the cam 11 is generated to impart substantially uniform angular velocity to the bell-cranks 12 and the linkage is arranged so that each bell-crank will oscillate the arm 25 at a substantially uniform velocity ratio in any position of adjustment. In a modification, Fig. 6, the bell-crank 20 is replaced by a simple lever 23a fulcrumed at 20a on an adjustable ring gear 49a and the roller 60a engaging the cam groove 59a is mounted on the pivot 22a connecting the lever 23a and the link 21a.
Patent GB-294397-A (GB)
Title: An improved anti-dazzle device
IPC: B60Q1/14
Filed: 1928-02-20
Abstract: 294,397. Rigby, w. Feb. 20, 1928. Lantern screens. - An annular clip or flange 12 is detachably mounted on a vehicle lamp 1 and carries a substantially tangential hinge pivot 3 for a flat reflecting screen 4, and also a bracket 13 for a Bowdenwire 6 or like remote control connected to a bracket 5 on the screen. The screens of a pair of lamps may be connected together by a link connection 7 and operated by a common control against spring action. The pivots 3 may be arranged vertically or inclined to the horizontal. and the screens 4 may be made of polished metal or provided with an inset mirror. Also, coloured mirrors 10 may be fitted to the rear faces of the screens.