baber/WOPTO huggingface dataset:
Patent GB-646149-A (GB)
Title: Improvements in or relating to the preparation of pteridines
Filed: 1947-07-11
Abstract: Substituted pteridines of the general formula <FORM:0646149/IV (b)/1> wherein R represents an aromatic radical, are prepared by oxidizing the corresponding 5 : 8-dihydropyrazyl compounds with an oxidizing agent having an oxidation-reduction potential within the range E DEG = - 0.49 to - 1.42, e.g. pteroylglutamic acid or a salt, ester or amide thereof may be prepared by oxidizing the corresponding 5 : 8-dihydro compounds.  The oxidizing agent may be added to a reaction mixture comprising 2 : 4 : 5-triamino-6-hydroxypyrimidine, a 2 : 3 - dihalopropionaldehyde and p-aminobenzoylglutamic acid or salt, ester or amide thereof to form pterolyglutamic acid or a salt, ester or amide thereof. Suitable oxidizing agents mentioned are iodine, potassium ferricyanide, potassium bromate, sodium hypoiodite, chlorine, benzoquinone, manganese dioxide, ferric chloride and sodium dichromate.  In the examples, pteroylglutamic acid (folic acid) is prepared.  The Specification as open to inspection under Sect. 91 refers to the preparation of any compound having the fused aromatic pyrimidopyrazyl nucleus by oxidizing the corresponding dihydropyrazyl compound.  In additional examples, the preparation of the following compounds is described: N-[2-amino-4-hydroxy - 6 - pyrimido[4,5 - b]pyrazyl)methyl]-pyridinium iodide, 2 - amino - 4 - hydroxy - 6-carboxy pyrimido[4,5 - b]pyrazine and 2-amino - 4 - hydroxy - 6 - methyl pyrimido [4,5-b]pyrazine.  This subject-matter does not appear in the Specification as accepted.
Patent GB-562510-A (GB)
Title: Improvements in or relating to pressure-relieving valves
IPC: F16K17/19
Filed: 1942-12-30
Abstract: 562,510. Relief valves. CROMPTON, T. A. Dec. 30, 1942, No. 18503. [Class 135] A combined pressure and vacuum relieving valve has bell-shaped valve members arranged one within the other, guided by centrally disposed guide means and arranged to seat metalto-metal on their seats. In the form shown in Fig. 1, a seat member 16 secured by bolts 28 to a base-plate 12 is formed' with three seating surfaces 18, 19, 20, the seat 20 co-operating with the pressure relieving valve 30 and the seats 18, 19 co-operate with the annular vacuum relieving valve 32. The valve 30 is loaded by shot in a container 60 moulded on the valve and is formed with a domed part 54 having guide surfaces 56, 58 engaging a guide spindle 48 screwed into a boss 50 supported by arms 52 from the seat member. The vacuum valve has a central boss 64 supported by arms 66 engaging the guide spindle. In a modification, the vacuum valve is guided by upstanding guide wings on the seat. In the form shown in Fig. 3, the pressure valve is loaded by a spring 78 bearing against an adjustable abutment 80 screwed into the casing and secured by a locknut 84. The pressure relief valve may also be opened by a hand lever connected by a crank, cam or eccentric 94 and turn links 98 to a rocker 102. In this form the tank connection is made laterally into an inner casing, pressure relief taking place through a pipe coupled to connection 72 and vacuum relief through an orifice 74 opening directly into atmosphere. In a modification, the hand operated lever mechanism is replaced by a screwed spindle. Specifications 223,122 and 299,905, [both in Class 135], are referred to.
Patent GB-516287-A (GB)
Title: Improvements in and relating to machines for flanging or otherwise shaping metal plates
IPC: B21D19/04
Filed: 1938-06-22
Abstract: 516,287. Angular bending. ADAMSON & CO., Ltd., D., PARKYN, R. W., and NORTON, T. June 22, 1938, No. 18521. [Class 83 (iv)] A machine for shaping circular or other metal plates comprises means 16, 17 for holding and rotating a plate while bending members 56 operate from the edge of the plate inwards to give it its' desired shape. The head 17 is carried by a ram 18 on a bridge 19 adapted to be moved to the rear for the insertion of a fresh plate &c. by racks 25, gearing 26 &c. and a motor 30 and to be locked in position, when pressure is applied to a plate on the removable head 16, by overhanging parts 34. The circular plate is centred by four radially moving rollers 58 and, after the head 17 has been moved down to clamp the work and a detachable roller 47 positioned by motor-driven screws 43, the roller 56 is turned into any desired angle, as shown in Fig. 7, by a quadrant 52 and motordriven worm, and is moved radially inwards by a motor-driven screw 40 to bend the edge of the sheet, which is rotated by motor-driven gears 15, 14, over the roller 47. The angle of the roller may be altered during the process as shown in Fig. 8. Pressure water for the ram 18 is supplied by jointed pipes 38.
Patent GB-774804-A (GB)
Title: Improvements in or relating to high density spray-dried granular, soapless detergentcomposition
Inventor: DAVIS EARL
Filed: 1954-06-24
Abstract: A spray-dried soapless detergent composition in hollow bead form contains a water-soluble builder salt and 35-45 per cent by weight of a water soluble sulphated or sulphonated detergent having an alkyl group of 8-18 carbon atoms, the hollow beads resulting from deaeration of an aqueous slurry of the detergent and builder salt and subsequent spray drying of the slurry; the spray-dried beads have increased density by virtue of the slurry deaeration and the composition has a bulk density of 0.33 to 0.45 grams per cubic centimetre.  A number of classes of sulphated or sulphonated detergents are specified.  The builder salts may include sodium sulphate, sodium carbonate, sodium phosphate, alkali metal silicates and polyphosphates such as sodium tripolyphosphate and sodium pyrophosphate.  The slurry may be deaerated by spraying it into a chamber maintained at 5-250 mm. mercury absolute pressure, the temperature of the slurry having previously been raised to about 110-160 DEG F. sufficiently rapidly, e.g., within about 30 minutes, to avoid undue gelation.  The deaerated slurry may then be heated to 120-190 DEG F. within 5-100 seconds immediately before pumping it to the spray drier.  In the example a slurry containing 9263 lbs. water, 1696 lbs. sodium sulphate and 5764 lbs. sodium alkyl aryl sulphonate is heated to 100-110 DEG F. and mixed with 8564 lbs. of sodium tripolyphosphate and 4752 lbs. of water.  The slurry (thereby raised in temperature to 115-125 DEG F.) is sprayed into a chamber maintained at 50-75 mm. mercury absolute pressure and preheated to 185-190 DEG F. just before entering the nozzles of a spray drying tower.  An example of a finished composition contains 6.4 per cent of water, 39.4 of sodium alkyl benzene sulphonate, 14.8 of sodium tripolyphosphate and 39.4 of sodium sulphate and has a bulk density of 0.4. Specification 741,806 is referred to.
Patent GB-112487-A (GB)
Title: Improvements in Zinc Alloys.
Inventor: MAASS EMIL
IPC: C22C18/04
Filed: 1916-12-28
Abstract: 112,487. Maass, E. Dec. 28, 1916. Alloys.-Zinc-copper-aluminium alloys contain 7-8¢ per cent of copper and aluminium; an example contains 100 parts of zinc, 3 of copper, and 5 of aluminium. It is stated that shell-rearings made of such alloy do not clog the gun. The process of making the alloys consists in adding all the aluminium to the molten copper, allowing the mixture to cool down to about 700-800‹ C., then adding one-half of the zinc in a disintegrated and previously heated state, cooling the mixture to about 500‹ C., and finally adding the rest of the zinc.
Patent GB-414417-A (GB)
Title: Improvements in or relating to wet filters for air or other gas
IPC: B01D46/24
Filed: 1932-12-30
Abstract: 414,417. Washing gases. BOOTH, S., 42, Spencer Road, Twickenham, Middlesex, FRAME, W. J., 99, Deodar Road, Putney, and BRITISH VACUUM CLEANER & ENGINEERING CO., Ltd., Parsons Green Lane, Fulham, both in London. Dec. 30, 1932, No. 18567/34. Divided on 412,605. [Class 55 (ii).] A well filter for the separation of dust from air comprises a bed f of refractory material in the form of a hollow cylinder a, means for causing the fluid to flow vertically through the bed to maintain it in damp condition, means to flush the bed periodically free from dust, the gas passing transversely through the bed. Diatomaceous earth moulded into blocks is disposed between annular perforated cylindrical plates e of stainless steel to form the bed. Liquid, e.g. water, disinfectant, deodoriser or solvent is supplied to sprays l through a pipe m controlled by a valve to give a trickle or a full dust-discharging flow, sludge being withdrawn by a pipe i from a sump h. A baffle j and a cap k cause the gas to flow twice through the cylinder a, whence it passes up a chimney c. Specification 412,605 is referred to.
Patent GB-1143042-A (GB)
Title: Improvements in or relating to lamp holders
Inventor: GREASLEY ERIC ARTHUR
IPC: H01R33/09
Filed: 1967-04-21
Abstract: 1,143,042. Lamp holders. PRESSAC Ltd. 8 Sept., 1967 [21 April, 1967], No. 18573/67. Heading H2E. A lamp holder for capless lamps comprises a cylindrical moulding 1 of plastics material, e.g. nylon, closed at one end, containing a pair of contacts 4, which receives a lamp 8 and is snap fitted in a synthetic plastics casing 2, the lamp holder being secured in an aperture in a supporting panel 15 by means of a bracket 3, e.g. of carbon steel, a portion 17 of which shields parts 1 and 2 from the heat of the lamp. As shown, each contact 4 has two lamp contacting legs 4c, a locking lug 4a which engages a ledge 4b at the open end of the moulding 1 and a portion 4d which is crimped to a lead 9. The contacts are inserted in the moulding 1 from the open end thereof and are turned through 180 degrees against the outer face of the moulding 1, leads 9 passing through slots (not shown) between sections 11 of a flange provided at the closed end of the moulding, the sections 11 being engaged as a snap fit in undercut recesses 21 of the casing 2. A pair of slots (not shown) in the casing receive a pair of legs 13, formed in the outside edges of the bracket 3 which is snapped on to the casing, each leg being provided with a pair of lugs 14 abutting the face of panel 15 to limit insertion of the holder; also provided on the bracket is the frusto-conical or parabolically shaped heat shielding portion 17 having a pair of fixing lugs 18 which snap over the under ledges 19 of the casing, and legs 20 to support the lamp 8. In another embodiment (Fig. 4, not shown), each contact is twice folded to form a blade-like plug and the closed end of the moulding is formed with a pair of openings through which complementary sockets attached to leads are inserted. Alternatively, the contacts may form sockets to receive blade-like plugs carried by the leads.
Patent GB-1158189-A (GB)
Title: Improvements relating to Electric Connectors.
Inventor: CHALMERS WALTER MERCER
IPC: H01R12/83
Filed: 1967-04-22
Abstract: 1,158,189. Two part couplings. FERRANTI Ltd. 18 April, 1968 [22 April, 1967], No. 18627/67. Heading H2E. A multiple-conductor flat cable connector comprises two attachment members 25, 10, of insulating material shaped to sandwich between them, by means of studs 17 and apertures 18, part of the insulating body 24 of a cable 22, from which conductors 23 have been freed. The member 10 contains a number of recesses 11 in which are positioned resilient contact members 19. As shown cable 22 comprises a single row of conductors each of which is placed between a pair of ribs 15 formed on the member 10 and connected to a terminal part 21 of the contact. Both attachment members carry contacts when connection of a cable, comprising pairs of conductors arranged side-by-side in two parallel rows, is required. (Figs. 5, 6, not shown). The free end 20 of contact 19 makes contact with a respective contact pin in a suitable socket (Fig. 7, not shown).
Patent GB-1328618-A (GB)
Title: Device for sorting coins
IPC: G07D9/00
Filed: 1972-04-21
Abstract: 1328618 Sorting coins F ZIMMERMANN & CO 21 April 1972 [22 April 1971] 18691/72 Heading G4X A coin sorter in which coins are fed by a rotating plate 2 from a coin band 1 to a sorting track 8 over which they are conveyed by an endless conveyer band 14 includes an endless conveyer belt 16 disposed obliquely to the sorting track for initially moving coins towards a shallow step 31 bordering a coin reject aperture 32. The upper coin 4b of an overlapped coin pair passes over the step into the reject aperture whilst the lower coin 4a is transferred by a rotating roller 30 to the conveyer belt 14. The sorting track comprises a sorting bar 9 having graded apertures 10<SP>1</SP>, 10<SP>2</SP> &c. and spaced guide rails 11, 12, the step 31 being formed as a continuation of the guide rail 12. As shown the driven and idler rollers 17, 21 for the belt 16, and the transfer roller 30 are mounted on a plate 20 pivoted at 26 and spring-urged toward the sorting track and rotating plate 2, the spacing of the belt 16 from the plate is adjustable by means of a screw (27) (Fig. 2, 3, not shown). The roller 30 has a peripheral rubber covering and is mounted to the plate 20 by means of a lever arrangement that automatically compensates for wear of the roller to maintain it a constant adjustable distance above the sorting bar 9. The coins may be counted by electronic sensing heads disposed along the sorting track.
Patent GB-223956-A (GB)
Title: Improvements in and relating to metal railway sleepers and chair pads therefor
IPC: E01B9/68
Filed: 1923-07-20
Abstract: 223,956. Alexander, R. D. T., and Joyce, H. W. July 20, 1923. Chairs, securing to sleepers.-Chair plates 6 are adjustably secured to sleepers 1 by bolts 9 having lateral eccentric enlargements engaging slots 8 in the sleeper. Two or four bolts may be used with each chair. Sound and vibration, preventing.-Chair pads may be used consisting of mats of coir or hemp treated with bitumen.
Patent GB-509533-A (GB)
Title: Improvements in cooling, heating and drying apparatus, more particularly for chocolate products
IPC: A23G7/02
Filed: 1938-06-24
Abstract: 509,533. Drying or cooling chocolate &c. products. LEHMANN, F. B. June 24, 1938, No. 18777. Convention. date, July 3, 1937. [Classes 29 and 34 (ii)] Apparatus for cooling, heating, or drying chocolate &c. products comprises a chamber 2 open at the upper parts of its sides and ends and having vertical conveyers 4, 5 for carrying the products first downwardly and then upwardly through the chamber which communicates through shafts 3 with an air-cooling or heating chamber 1. Air is circulated through the chambers by fans or blowers 8. The conveyers each consist of a pair of endlesschains provided with ledges carrying the trays &c. for the products. Baffles 11 are provided for shielding the trays entering the chamber from 'the circulating air, and vanes 10 distribute the air uniformly through the chambers. The trays may be fed to, and discharged from, the chamber 2 by a conveyer 7, their transference to or from the vertical conveyer being effected either by hand or automatically. Fig. 6 shows a modification in which the vertical conveyers are disposed in separate inverted L-shaped chambers, each provided with its own air cooling or heating and circulating means. In this case, the air may be circulated in opposite directions through the chambers. In another arrangement, the conveyers are housed in separate chambers connected by a tray-transfer duct 14, Fig. 10.
Patent GB-485516-A (GB)
Title: Improved method of manufacturing pulp for paperboard
IPC: D21C9/00
Filed: 1937-07-06
Abstract: In manufacturing pulp for paperboard from substances such as straw digested in usual manner with milk of lime at a temperature above 100 DEG  C., the calcium ions present in combined condition in the digested material are exchanged for other positive ions by treating the digested and washed pulp, with acids to a pH value of 6-6,5 followed if desired by addition of sufficient alkali to make the pulp alkaline, or with acid salts or with acids in the presence of acid reacting salts to a pH value of 4,5 to 5,5. Pulp obtained by cooking straw or mixtures of different kinds of straw with milk of lime at a temperature above 100 DEG  C., is thoroughly washed and introduced to a paper forming machine. Sulphuric acid is added to the circulating water of the wire cloths of the machine to obtain a pH value of 6-6,5.  A strong fairly waterproof board is produced.  In a second example sulphuric acid is added in the beater to washed pulp obtained from straw by cooking with lime to produce a pH value of 6-6,5.  In the paper forming machine a small excess of caustic soda is added to the circulating water.  A very strong board is obtained.  In a third example to the pulp in the beater is added a solution containing 4 per cent sulphuric acid and 8 per cent aluminium sulphate to produce a pH value of 4,5-5,5.  A strong and perfectly waterproof board is obtained.  Specification 126,879, [Class 96], is referred to.
Patent GB-1189970-A (GB)
Title: Benzylpiperidine Derivatives
IPC: C07D211/18
Filed: 1969-04-11
Abstract: 1,189,970. Halobenzylpiperidine derivatives. SANKYO CO. Ltd. 11 April, 1969 [11 April, 1968; 12 April, 1968], No. 18794/69. Heading C2C. Novel compounds of formula wherein X is a halogen atom; and R is a hydroxyalkyl group having from 2 to 4 carbon atoms; or an acyloxyalkyl group having from 2 to 4 carbon atoms in the alkyl moiety, the acyl moiety being an aliphatic acyl group having from 2 to 5 carbon atoms, or an aromatic acyl group having 6 or 10 carbon atoms in the aromatic ring; and acid addition salts of such compounds are prepared by either (a) reacting the compound of formula with a compound of Formula B XCH 2 CH 2 OR and reducing the resultant pyridinium salt or (b) reacting a compound of formula with a compound of Formula B above. Pharmaceutical compositions in conventional forms for oral or parenteral administration and having antitussive activity comprise an above novel compound and a carrier therefor.
Patent GB-653796-A (GB)
Title: Electrical contacts and contact materials and methods of making same
IPC: H01H11/04
Filed: 1947-07-15
Abstract: Non-welding metal powder used in making electric contacts comprises 82 per cent precipitated silver and 18 per cent of a mixture of 85 per cent cadmium oxide and 15 per cent cadmium sulphate.
Patent GB-597832-A (GB)
Title: Improvements in micro-wave control apparatus
IPC: H05B6/80
Filed: 1945-07-23
Abstract: <PICT:0597832/III/1> Radiation for physiological treatment purposes is generated by a microwave source mounted in a tube fitted with adjustable ends for tuning and control of the wavelength of the beam discharged towards the object to be treated, a reflecting surface being positioned on the remote side of the treated object to reflect the beam back into the object.  The source 19 is mounted in tube 18 which is fitted with frustro-conical ends 20, 25 longitudinally adjustable by devices 22, 27.  The conical sections are stated to separate the undesired longer wavelengths from the desired microwaves.  Section 20 is terminated by a tubular member 21 and tuning piston 24 while section 25 has an orifice 26 through which the radiation passes.  A tubular extension 28 supports a slide holder 29, into which slides having regulated orifices may be inserted, and a telescopic tube 30, 31, carrying further telescopic extensions 33, 35 of enlarged diameter, is attached to the slide holder.  A reflector 37 reflects back waves which pass through the subject 34.  It is stated that the emitted radiation may be polarized in a particular plane by the action of the orifice 26.  Simpler forms of the apparatus, not employing the frustro-conical sections, are illustrated in Figs. 1 and 2 (not shown).
Patent GB-903936-A (GB)
Title: Improvements in or relating to the sealing of electrical components
IPC: H01L23/488
Filed: 1960-05-27
Abstract: In a method of seallig electronic components (see Groups XXXVI and XXXVII) a synthetic resin sealant is used which initially is in the form of a solid block but which on heating liquefies and then solidifies and cures.  The preferred form of sealant is prepared by melting an epoxy resin, formed as a reaction product of bisphenol A and epichlorhydrin, and mixing in a filler, e.g. slate powder of 200 mesh, and a curing agent, e.g. phthalic anhydride in the proportions of 100 pts. resin to 50 pts. filler and 30 pts. curing agent.  The mixture is then cooled and solidifies.  The solid is then powdered and pressed to form the sealant block of the required shape.  The resulting block is thermoplastic, liquefying at a temperature of 120 DEG -150 DEG C. before beginning to gel and cure.
Patent GB-616374-A (GB)
Title: Rate-of-turn gyroscope
IPC: G01C19/42
Filed: 1946-06-24
Abstract: 616,374. Gyroscopic apparatus. SMITH & SONS (ENGLAND), Ltd., S., and MEREDITH, F. W. June 24, 1946, No. 18888. [Class 97 (iii)] A rate of turn gyroscope comprises one or more resilient members supporting in a frame a gimbal ring in which the rotor is mounted and so disposed that the gimbal ring is capable of rotational movement relative to the frame about an axis normal to the spin axis against the elastic restraint of the resilient members and means for limiting linear movement of the gimbal ring relative to the frame in a direction in which such linear motion would otherwise be permitted by the resilient member to a value which is small compared with the movement possible without the provision of such limiting means. The rotor casing 12, Fig. 2, is mounted in the frame 13 by means of two flat steel springs 14, the upper ends of which are clamped between steel blocks 18, 50, Fig. 1, and shoulder pieces 16 integral with the casing 12 and the lower ends are clamped between light alloy clamping blocks 51, 31 and the frame 13. To compensate for differential thermal expansions, slots 19 and grooves 52 are provided, and bolts 15, 17 are made of light alloy and of brass or austenitic stainless steel respectively and the thicknesses of the clamped members are adjusted for neglible differences in expansion. Rectangular tongues 28 in the upper clamping blocks cooperate with slots 29 in the lower blocks to prevent excessive lateral displacement of the casing 12 with respect to the frame 13 and a pin 32 passing through the bar 45 limits rotational movement of the casing. The datum position of the casing 12 is adjusted by a flat spring 30 secured at one end to the block 31 and pivotally mounted at the other end to pin 32. An E- shaped ferromagnetic core 22 is carried on a bracket 53 attached to the frame 13 and comprises two outer arms 23 carrying coils 24 through which an A.C. reference voltage is passed and a centre arm carrying a signal coil 25, the induced voltage in which is varied by the position of a laminated ferromagnetic core 27 carried on an extension 26 of the clamping block 18. Tilt of the gyro responsive to a turn causes core 27 to tilt relatively to the outer arms 23 and hence vary the voltage induced in coil 25 proportionately to the rate of turn. Core 22 may be adjusted by screws 42. Damping of the gyro is effected by a copper disc 33 mounted on a spindle 34 for rotation between the pole pieces of a permanent magnet 35. Tilt of the casing 12 causes rotation of the disc 33 through bracket 40, linkage 39, quadrant 37 and pinion 56. Connections for the three phase rotor driving supply may be made between the terminal board 59 on the casing and a similar board on the frame 13 by three light helical springs (not shown). Specifications 476,033, [Group XX], 576,249 and 617,240, [both in Group XXXV], are referred to.