baber/WOPTO huggingface dataset:
Patent GB-1357553-A (GB)
Title: Insulated-gate field effect transistors
IPC: H01L27/06
Filed: 1971-06-24
Abstract: 1357553 Semi-conductor devices NIPPON ELECTRIC CO Ltd 24 June 1971 [24 June 1970] 29775/71 Heading H1K An IGFET 100 comprises (Fig. 2b) a N-type Si substrate 1 wherein there is a P+ source region 11, a P+ drain region 12 and a gate electrode 13 overlying an insulant layer 10, with source and drain electrodes 15, 16. In the substrate there is formed a gate protection device 200 having a P+ region 3, a N+ region 2, an input terminal 5, and an output terminal 6 at opposed ends of region 3; the latter being connected over wiring layer 14 to the gate electrode 13. The regions are formed by known selective diffusion, and the impurity concentration of P + regions 3, 11, 12> that of N+ region 2> that of N substrate 1. The terminals and electrodes are formed by photoetching an evaporated aluminium layer, so that a series resistance is formed between terminals 5, 6 and a PN diode is formed between regions 2, 3. A grounded electrode 8 is applied to the opposite face of the substrate. In operation an input voltage Va is applied to terminal 5 and as it increases a correspondingly increasing voltage Vb occurs at terminal 6 until it exceeds the breakdown voltage BV j6  of PN junction 22, when Vb further increases according to the relation. where R is resistance value of P + layer 3, r is resistance of PN junction between regions 2, 3 at breakdown so that V(b) cannot exceed BV J6 , and when V(a) at terminal 5 exceeds breakdown voltage BV J5  of PN junction 21 a current I B  flows therein. Thus the breakdown voltage of the protection diode, and the resistance component at breakdown are maintained low, and no abnormally high voltage can be applied to the gate. In a modification (Figs. 5a, 5b, not shown) a further P+ region of impurity concentration composable to that of regions 3, 11, 12 is formed in the N + region 2 and substrate 1 adjacent the P + regions 3 and is connected ohmically to an electrode grounded over a low resistance whereby the breakdown point resistance is reduced. Alternatively the further region may be N + of impurity concentration whereby electrode 7 is directly ohmically connected to N + region 2. The N+ region 2 may also cover the whole of the substrate surface except for the gate region of FET 100 and the several P+ regions to prevent edge effect and parasitic MOS effect due to channels other than these of the IGFET 100.
Patent GB-505181-A (GB)
Title: Apparatus for use in the lubricating of spindles for cap spinning, twisting, doubling and like machines
IPC: D01H7/20
Filed: 1937-11-03
Abstract: 505,181. Lubricating spindles in cap frames; oil cans. ROUSE, E. J. Nov. 3, 1937, No. 30048. (Class 120 (ii)] [Also in Groups XVII and XXXIV] In cap spinning, twisting, doubling, and like machines a trough 3 clipped to the lifter rail by clips 5 is provided with struck-up portions 4 surrounding each spindle and supporting leather washers 7, and with felts 8 each serving a number of spindles, each spindle being moistened with lubricant from the felts and wiped by the washer 7 during the reciprocation of the lifter rail. The wharls rotate on wooden washers 13. To ensure that not more than the necessary quantity of lubricant is supplied to each felt when the trough is lowered to the position shown in Fig. 4, a can 21, Fig. 7, is used. A small vessel 20 adapted to contain the quantity for a single wick is fixed in the can and connected to a spout 26, so that when the can is tilted the lubricant is discharged through a ball valve 23 to the spout, the vessel being automatically refilled when the can is restored to the vertical position. The Provisional Specification describes also the formation of the lifter rail as a trough, the leather washers and the felts being retained on annular members, and a cover plate arranged to span the lifter rail.
Patent GB-1220499-A (GB)
Title: Method of purifying and separating derivatives of fluorescein series labelled with radioactive mercury isotopes
Inventor: RATUSKY JOSEF
IPC: C07F3/12
Filed: 1968-06-24
Abstract: 1,220,499. Radio-active organo mercury compounds. CESKOSLOVENSKA AKADEMIE VED. 24 June, 1968 [12 July, 1967], No. 30085/68. Heading C2J. In the purification of radio-active mercury fluorescein compounds, for example those prepared as described in Specification 1,169,998, the reaction product is subjected to chromatographic separation on a column of alumina. Unreacted fluorescein derivatives and mercury compounds are eluted with water, difluoresceinyl mercury with bicarbonate solution, hydroxy-mercuri-fluoresceins with carbonate solution, and bis - (hydroxy - mercuri)- fluorescein compounds with sodium hydroxide solution. In examples the separation is described of difluoresceinyl mercury, mono- and bis-(hydroxymercuri) compounds of fluorescein, and the monohydroxymercuri-compounds of 2,7 - dibromo -, 4,5 - dibromo -, and 2,7 - diiodo-fluorescein; the mercury isotope may be Hg 197 or Hg 203.
Patent GB-201472-A (GB)
Title: Improvements in bollards for lifeboat davits and the like
IPC: B63B23/18
Filed: 1922-11-03
Abstract: 201,472. Wilson, H., and Kirkley, R. H. Nov. 3, 1922. Bollards.-Bollards comprising upper and lower rope guides designed for attachment to a davit post are formed from a single length of tubing. The blank 10, Fig. 3, is cut along the lines c leaving upper and lower lugs 1<a> on either sides of the removed rectangles a and median lugs 4a. The upper and lower tubular portions are folded over on the dotted lines e, Fig. 4, and when finished, constitute the upper and lower rope guides 1, Fig. 1, whilst the parts 4<a> constitute the extensions 4. The back plates 8, 9, may be formed from separate pieces or the diameter of the tube may be sufficient to permit the extensions 4 to embrace the davit post.
Patent GB-1360998-A (GB)
Title: Recovery of doxycycline and products thereof
IPC: C07C233/00
Filed: 1971-06-28
Abstract: 1360998 Purification of α-6-deoxytetracyclines I VILLAX 28 June 1971 [3 July 1970 10 Sept 1970 9 June 1971] 30121/71 Heading C2A A process for the purification of α-6-deoxytetracyclines from a reaction mixture containing, besides α-6-deoxytetracyclines, reaction byproducts, degradation products and the # isomer as impurities, is characterized in that the crude reaction mixture is acidified with a concentrated aqueous solution of a strong organic or inorganic acid, then heated up to a temperature of 60-90‹ C. until the impurities are further degraded, the reaction mixture is cooled and the α-6-deoxytetracyclines are recovered by precipitation as a water-insoluble derivative and subsequent formation of the free base, the hydrochloride or the calcium salt. Suitable tetracyclines which may be purified by this method include α - 6 - deoxytetracycline, α - 6 - deoxy- 5 - hydroxytetiacycline, α - 6 - deoxy - 7- chlorotetracycline and α-6-deoxy-7-chloro-5- hydoxytetracycline. Suitable acids are methanesulphonic acid, sulphuric acid and hydrochloric acid in concentrations between 2 and 18 per cent.
Patent GB-1039159-A (GB)
Title: Improvements in or relating to liner plates for machines and bolts for use with suchplates
IPC: F16B35/06
Filed: 1964-07-29
Abstract: A plate for lining a stone crushing machine is formed with a bolt hole having tapered grooves extending for substantially the whole length thereof from opposite faces of the plate and which are offset by 90 degrees, and is secured in position by a bolt formed at one end with an axial projection of similar length and taper as each groove. The arrangement allows the plate to be used on either side of the machine.
Patent GB-504260-A (GB)
Title: A two-stroke internal combustion engine cylinder having a uni-flow scavenging system
IPC: F02B25/00
Filed: 1938-10-18
Abstract: 504,260. Cylinders. MASCHINENFABRIK AUGSBURG - NURNBERG AKT.- GES. Oct. 18, 1938, No. 30167. Convention date, Oct. 22, 1937. [Class 7 (ii)] In a two-stroke-engine cylinder, having uniflow 'scavenging, rows 2, 3, 4, of admission ports, are arranged so that the centre lines of the ports in each row are tangential to imaginary circles, eccentric to, but arranged symmetrically round the cylinder axis. The inclination of the ports may vary as shown, the lowermost ports directing air over the piston face to cool it.
Patent GB-1433594-A (GB)
Title: Shaving apparatus
IPC: B26B21/16
Filed: 1972-06-28
Abstract: 1433594 Razors WILKINSON SWORD Ltd 22 June 1973 [28 June 1972] 30211/72 Heading B4B A shaving unit comprises a substantially rigid member 11, e.g. of plastics material, to which at least one razor blade is secured, the rigid member having a number of forwardly projecting teeth to provide a comb guard 11a at a pre-set spacing from the cutting edge of the blade. Various values are given for the dimensions A, B, H, J, K, Fig. 3 and E, F, G, Fig. 2. In a modification, Fig. 6, the teeth are each interconnected by webs 11b, slots 11c being provided for the clearance of soap.
Patent GB-1441152-A (GB)
Title: Pneumatic loom
IPC: D03J5/00
Filed: 1973-06-26
Abstract: 1441152 Pneumatic looms CROMPTON & KNOWLES CORP 26 June 1973 [24 July 1972] 30346/73 Heading D1E The subject matter is identical with that of Specification 30244/73 but the claims relate to the guide comb. Specifications 1441151 and 1441153 are referred to.
Patent GB-1279151-A (GB)
Title: Phosphor compositions
Inventor: BROWN JESSE J JR
IPC: C09K11/62
Filed: 1969-06-16
Abstract: 1279151 Luminescent materials and uses thereof GTE SYLVANIA Inc 16 June 1969 [14 June 1968] 30349/69 Heading C4S A phosphor is of formula (AGa y M (5-y) O 8  activated by Mn partially substituting A where A is an alkali metal ion or mixtures thereof (e.g. K, Na and/or Li), M is Al, Si, Ge or mixtures thereof. The Mn may be divalent. Matrices may be KGa 5 O 8 ; KGa 4 AlO 8 ; Na- Ga 4 AlO s ; NaGa 5 O 8 ; LiGa 5 O 8 . The host may be mixed matrices of (AGa y M (5-y) O 8  with (A<SP>1</SP>GaM<SP>1</SP>)O 4 , wherein A<SP>1</SP> is an alkali ion or mixture thereof and M<SP>1</SP> is Al, Si, and/or Ge, such as 70% KGa 5 O 8  with 30% KGaSiO 4 ; NaGa 4 Al- O 8  with KGaSiO 4  and NaGa 5 O 8  with LiGaSiO 4 . Preparation may be by heating the raw mix at 1000‹ to 1350‹ C. for 5 to 20 hours, and by a second heat treatment in a mildly reducing atmosphere (e.g. 0À01 to 1% hydrogen in nitrogen). Applications to low pressure Hg vapour lamps which may be photo-duplicating aperture lamps and coloured TV C.R.T.s are specified and radar use mentioned.
Patent GB-721160-A (GB)
Title: Improvements in or relating to the production of cresols
Inventor: BROWN JOSEPH HORSEFIELD
IPC: C07C39/07
Filed: 1951-12-28
Abstract: Cresol is prepared by treating chlorocresol vapour with excess of hydrogen at elevated temperature in presence of a vapour phase hydrogenation catalyst.  The process is especially suitable for the production of o-cresol from 6-chloro-o-cresol, the latter being a by-product in the manufacture of 2-methyl-4-chlorophenoxyacetic acid. The invention also includes a method of making this latter acid in which o-cresol is monochlorinated, the isomeric 4-chloro-o-cresol and 6-chloro-o-cresol separated (e.g. by fractional distillation), the former condensed with chloroacetic acid and the latter re-converted to o-cresol as above.  Suitable hydrogenation catalysts are platinum, palladium, silver, nickel and copper. The operating temperature depends on the nature of the catalyst, being about 315-350 DEG  C. (bath temperature) for nickel.  The preferred catalyst consists of nickel oxide on alumina, this being initially reduced before the chlorocresol is passed in.  The catalyst may be regenerated when necessary by heating in air and rereducing.  The preferred molar ratio of hydrogen to chlorocresol is 5 : 1.  An example is given of the process.  The chlorocresoxyacetic acid may be isolated and used as in Specification 664,069.
Patent GB-437483-A (GB)
Title: Method of simultaneously dewaxing and refining mineral oils
IPC: C10G73/28
Filed: 1934-10-23
Abstract: <PICT:0437483/III/1> <PICT:0437483/III/2> Wax-containing oils are dewaxed and purified by chilling the oil diluted with naphtha if necessary and then adding an acid, the resulting sludge is precipitated together with wax and is separated together with excess acid in a centrifuge, leaving a wax-free oil.  The sludge is heated to a temperature above the melting point of the wax and centrifuged to separate the wax, acid and sludge.  Lubricating oil passes from a tank 10, Fig. 3, through a chiller 11 to a mixing chamber 18 to which chilled naphtha is added from a tank 15 and concentrated sulphuric acid from a tank 17.  The resulting mixture is fed to a centrifuge 19 and the dewaxed oil is discharged into a tank 20.  The mixture of acid, sludge and wax is discharged into a heated tank 21 and then separated in a centrifuge 23, from which melted wax flows into a tank 24, acid into a tank 26 and sludge into a tank 25.  The centrifuge 23, Fig. 1, consists of a bowl a, a nest of separating discs d and a top disc e mounted on a driving spindle h, and is provided with a discharge g for liquid wax and a sludge discharge f which is adjustable by means of exchangeable rings.  Two inclined discharge tubes j for acid are mounted near but not touching the inside of the bowl at k and touch the bottom of the bowl at m.  Screwed into the bowl at 0 is a short discharge nozzle mounted inside each of the tubes j.  The heavy acid is thrown against the wall of the bowl and escapes through the openings k and nozzle to the discharge at o.
Patent GB-1303524-A (GB)
IPC: B60R22/12
Filed: 1970-06-23
Abstract: 1303524 Safety harness SOC ANON FRANCAISE DU FERODO 23 June 1970 [24 June 1969] 30478/70 Heading A3V A safety belt for a road vehicle comprises a first belt part 10 which can be secured to an upper part of the vehicle body by bracket 11 on one side of a seat S, a second belt part 12 which can be secured to a lower part of the body by bracket 13 on the same side of the seat, and a shorter third belt part 14 which can be secured to a lower part of the body by a bracket 15 at the other side of the seat, the first and second parts being of such a length to extend substantially across the body of a seat occupant to link with the third part by clasp 17, the third part being of a material having a coefficient of extension greater, preferably 1.2 to 1.8 times greater, than that of the material of the first and second belt parts. More preferably the coefficient of extension of the third part of polyamide material, is 1.45 times greater than that of the first and second parts, which may be formed from polyester material. The first and second belt parts may be formed as a continuous belt carrying a releasable clasp for engagement with the third part, which may include an energy absorber having a slidable friction element.
Patent GB-1312669-A (GB)
Title: Crush barriers for persons
IPC: E04H17/18
Filed: 1970-06-24
Abstract: 1312669 Crush barriers H SCHEPMANS 24 June 1970 [24 June 1969 15 May 1970] 30591/70 Heading E1B A crush barrier comprises a main frame 1 mounted at the edge of the pavement and a front frame 2 connected thereto by side frames 3 and defining an enclosure for children or invalids. A plank 16 may be removably mounted between the side frames. (For Figure see next page)
Patent GB-267200-A (GB)
Title: Machine for piling roped cloth in cylindrical or other receptacles
IPC: B65H54/80
Filed: 1925-12-04
Abstract: 267,200. Lyth, J. J. Dec. 4, 1925. Reversing-gearing.-In a machine for piling roped cloth in a cylindrical tier &c. and having a rotating conduit with a lower section or chute 32 which rises and falls in an arcuate path, the chute is moved up and down by chains 56 on sprockets 55 driven by a worm 54 and chain 49 from a shafb 45. The shaft 45 is driven through a reversing-clutch 47 from a pinion 41 engaging an internal circular rack on the stationary basering 11. The reversing-mechanism comprises a lever 60, Fig. 6, pivoted at 61 engaged with lost motion at 62, 63 by the arm 59, also pivoted at 61, of a spring toggle 59, 66. To the chute is connected a link 74 which in its end positions causes a slide 73 to contact with stops 71, 72 on a rod 70, moving an arm 69 rigid with the toggle-arm 66. Owing to the lost motion at 62, 63, the toggle moves through the neutral position before the clutch is unmeshed, the spring then throwing the clutch into engagement with the other pinion. The chute-raising pinion 43 has only one groove 43<a> for its tooth 47<a> to provide lost motion to prevent the chute from exactly retracing its path; while the chute-lowering pinion 44 has a number of grooves 44a for its tooth 47<a> to minimize lost motion to prevent dwell of the chute at the axis of the kier. The stop 72 is automatically adjusted as the pile rises to increase the amplitude of movement of the chute, by a pawl 79 slightly rotating the screwed rod 70 at each upward movement. Specification 212,631, [Class 15 (i), Dyeing &c., Apparatus for], is referred to.
Patent GB-933160-A (GB)
Title: Water-insoluble monoazo dyestuffs
IPC: C09B29/033
Filed: 1961-08-25
Abstract: The invention comprises monoazo dyes of formula <FORM:0933160/IV(a)/1> wherein R2 is the radical of a diazo component of the benzene, thiazole, benzthiazole, thiadiazole or thiophene series which is free of sulphonic or carboxylic acid groups, X and Y are hydrogen or chlorine atoms or methyl or methoxy groups, R is a hydrogen atom or an alkyl radical containing up to 4 carbon atoms which may be cyano substituted or the group -C2H4OC2H4CO OZ.  R1 is the group C2H4OC2H4COOZ and Z is an alkyl radical containing up to 4 carbon atoms.  The dyes are prepared by the normal coupling procedure using suitable components.  The dyes give red and blue shades when used in the dyeing and printing of polyethylene terephthalate, acetate rayon and polyamides. Examples and suitable components are specified.
Patent GB-505282-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B33/00
Filed: 1937-11-09
Abstract: 505,282. Cameras for colour photography. WADDINGTON, D. G. H. Nov. 9, 1937, No. 30743. [Classes 98 (i) and 98 (ii)] In a camera adapted to make a number of exposures each through a separate colour filter. the back 2 is formed with a central aperture 3, and a dark slide carrier 5 slides in grooves 4. The carrier 5 is provided with three light filters and the back 2 contains a roller blind shutter 8 with its rollers 6, 7. The roller 6 carries a pinion 9 engaging a rack 10 having a cam 14 at its forward end. A clockwork motor 13 operates the shutter, and a pulley 19 with cord 18 is provided for resetting it. The platform 11a carries spring-urged tappets 21-24, of which 21, 23 are engaged by cam 14, and 22, 24 by the end 10a of the rack 10. The top of the carrier 5 carries cams 35, 36 and stops 37, 38. In operation, the shutter blind is wound on the roller 6 until the rack 10 is held by the setting stop 51. The carrier 5 is then moved in the same direction until the stop 37 engages stop 25 on tappet 21, and the loaded slide inserted. On withdrawing the stop 51 the rack 10 is released and the shutter exposes the first plate. Cam 14 then engages tappet 21 to. move stop 25 away from stop 37 and the carrier 5 is released, while rack 10 is hed by its forward end engaging tappet 22. Carrier 5 then moves to its second position in which stop 38 engages stop 28a on the underside of pivoted lever 28. Just before this position is reached, cam 35 engages stop 26 on tappet 22, releasing rack 10 to expose the second plate. Cam 14 then engages tappet 23 which moves stop 28a out of the path of stop 38 and further movement of rack 10 is prevented by tappet 24. Carrier 5 then moves to its third position, when cam 36 actuates stop 27 to withdraw tappet 24 from the path of rack 10 and the shutter is released for the final exposure. The shutter apertures are proportioned according to the required exposures for the various colour filters, and the shutter may be detachable and interchangeable with others of different aperture ratios.
Patent GB-945693-A (GB)
Title: Device for traffic supervision
IPC: G08G1/054
Filed: 1960-09-06
Abstract: 945,693. Photographic tell-tale cameras; timed control of electric circuits. AGFA A.G. Sept. 6, 1960 [Sept. 8, 1959], No. 30762/60. Headings G2A and G3T. [Also in Divisions G4 and H3] A vehicle which passes a traffic signal while it is showing amber or red actuates a camera which photographs the vehicle and also the reading of a timer which is started by the change-over of the signal to amber or to red, respectively. The camera 9 (Fig. 1) is arranged at a convenient distance from a set of traffic lights 4 and during the amber, red, and red amber phases, any vehicle which crosses the road pad 8 is photographed while the dial of a clock 10 started at the beginning of the amber phase or at a predetermined interval thereafter, is simultaneously recorded, a second photograph being taken after a fixed time interval. When the amber light is shown relay 28 (Fig. 4) comes up thus starting the clock by energizing electromagnet 34 and a short circuit across condenser 39 is removed. When condenser 39 has charged up, thyratron 36 fires and relay 43 opers ates, so cutting off thyratron 36 and opening the charging circuit for condenser 39. Until now a vehicle crossing the pad 8 and so operating switch 42 has had no effect, but now relay 44 can operate and in so doing, energizes electromagnet 32 for operating the camera shutter, and brings up relay 45. Consequently 44 is released, condenser 39 is charged over resistor 41 and when thyratron 36 fires relay 46 comes up. Re-energization of electromagnet 32 causes a further photograph to be taken, relay 45 and hence relay 46 release but because contacts 45b operate with delay electromagnet 35, which resets the hands of the clock to zero, is not energized. The circuit is now set for recording the next infringer. During the red cycle relay 30 operates, maintaining relay 43 and hence electromagnet 34 and allowing condenser 52 to charge up. Photographing of an infringer now proceeds as before and also when relays 28 and 30 are both operated (red-amber phase). At the green phase, relays 28, 30 and 43 release but momentarily 46 comes up, due to the stored charge on condenser 52, so that electromagnet 35 can energize and so reset the clock hands to zero.
Patent GB-766326-A (GB)
Title: Penicillin salts of an ester of 4-aminosalicylic acid
IPC: C07D499/00
Filed: 1951-09-18
Abstract: A penicillin salt of the beta diethylaminoethyl ester of 4-aminosalicylic acid is prepared by reacting a penicillin with the beta diethylaminoethyl ester of 4-aminosalicylic acid.  The penicillin is the free acid, or a salt such as sodium or potassium penicillin, and may be penicillin G, F, dihydro F or K.  The ester is the free base, or a salt with an organic or inorganic acid, e.g. hydrochloric acid or N-oxide or N-hydrated oxide.  Mixtures of the esters and/or penicillins may be reacted.  The reaction is carried out in the presence of a solvent as in co-pending Specification 766,325.  The salts may be used in the purification of penicillin from, e.g. solvent extracts of fermentation broths.
Patent GB-954987-A (GB)
Title: Inflatable protective suit for high altitude flight
Inventor: KRUPP CARROLL PETER
IPC: A41D13/00
Filed: 1960-09-07
Abstract: 954,987. Respiratory appliances. B. F. GOODRICH CO. Sept. 7, 1960, No. 30847/60. Heading A5T. [Also in Divisions A3 and B7] Helmet.-The helmet consists of a transparent plastic visor 36c and portions 36a, 36b of dualwalled construction comprising a rubberized stockinette lining and a nylon fabric covering. An opening with a sliding clasp fastener 115 extends from one side of the back of the head, round the front of the neck to the other side of the back of the head. A rubber diaphragm 116 with a central opening 117 separates the interior of the helmet from the rest of the suit. Air supply.-The interior of the suit is inflated from a conduit 120 through a fitting 118 on the chest. A metal tube 121 also extends upwardly from the fitting 118 and through the diaphragm 116 to terminate in a nozzle 122 for directing a jet of air along the visor to prevent fogging. A check valve 123 in the diaphragm maintains the pressure balance. An air exhaust fitting 124 is provided in the lower abdominal region.