baber/WOPTO huggingface dataset:
Patent GB-304979-A (GB)
Title: Improvements in or relating to postal bags
IPC: A44B19/26
Filed: 1928-05-26
Abstract: 304,979. Wheatley, F. May 26, 1928. Fastenings for bags. - A bag for postal purposes, made of flexible material so that it can be used either side out, each side bearing a postal address, has the mouth provided with fastening means of the kind comprising rows of teeth 4 attached to flexible strips 3 so that they can engage in either state of the bag, the strips being sewn in between the double ends 5 of the bag and adapted to be caused to interlock by the movement of a slide 7, Figs. 4 and 5, provided with a projecting flanged member 8 to which a ring 9 for actuating the slide is attached. The part 8 is of the form shown in Fig. 5 to enable the actuating ring 9 to pass to the reverse side to manipulate the fastening when the bag is turned inside out. A tab 11 adapted to bear stamps is attached to the part 9 and carries a padlock 12 adapted to be passed through eyelets 13 to prevent unauthorised opening of the bag. Strengthening pieces 14 are provided at the ends of the bag mouth. Specification 272,116, [Class 133, Trunks &c.], is referred to.
Patent GB-772961-A (GB)
Title: Motion picture camera
IPC: G03B1/12
Filed: 1955-05-31
Abstract: 772,961. Spring power-storing mechanism. BROIDO, J. J. G. G. May 31, 1955 [June 4, 1954], No. 15597/55. Class 10. [Also in Group XX] A spring driving motor is housed in a handle fixed to the base of the camera casing and drives a first shaft rotatably mounted in the handle having a coupling to connect it to a second aligned shaft in the camera casing for driving the camera mechanism. In the form shown, the handle comprises relatively rotatable parts 59, 60, to the latter of which one end of the spring 61 is secured, the other being anchored to the shaft 63. The spring is wound by rotating the part 60 and is held wound by pawls 73, 73<SP>1</SP> engaging a ratchet 72 on a member 70 integral with the part 59. The handle is detachable, being located on dowels 75, 751 and retained by a bayonet locking device operated by a handle 81 which also operates a pawl to lock a ratchet on the shaft 63 to prevent the spring unwinding when the handle is detached. A separable coupling connects the shaft 63 to a shaft in the camera carrying a gear 67 which drives a gear 84, and thence, through gears 86, 87 the take-up spool 58. The gear 67 also drives a pinion 89 and, through bevel pinions 90, 91 a gear train at the front of the camera, in the compartment 53, which drives a governor in the housing 103 and cranks which operate a feed claw and reciprocating shutter members which obscure the exposure aperture from above and below alternately. One of the gears in this train carries abutments one of which is obstructed by the end 115 of a spring-urged pivoted lever 116, the end 118 of which is formed as a trigger 118, by operation of which the mechanism is released. In another embodiment the spring is on a transverse axis and is wound by an external key. In this form the governor is contained in the handle.
Patent GB-146097-A (GB)
Title: Process for the production of a solid, neutral fertilizer, containing nitrogen and phosphorus
IPC: C05B11/06
Filed: 1920-06-10
Abstract: A solid nitrogenous phosphoric product suitable as a fertilizer is obtained by converting tri-calcium phosphate by heating it with at least an equal quantity of nitric acid, preferably of 50-60 per cent strength, into mono-calcium phosphate and calcium nitrate, and adding to the thin paste obtained sufficient limestone or other calcium compound or phosphate to neutralize the free acid, and convert the mono-calcium phosphate into mono-hydrogen calcium phosphate.  The product obtained is allowed to solidify and is then pulverized.
Patent GB-386861-A (GB)
Title: The manufacture of derivatives of the anthraquinone series
IPC: C09B5/16
Filed: 1932-06-02
Abstract: Anthrapyrimidines are prepared by heating a -aminoanthraquinone or a substitution product or derivative thereof with an aromatic or aromatic-aliphatic carboxylic acid alkylimide halogenide, in the presence or not of a suitable organic solvent.  Alternatively, the corresponding carboxylic acid alkylamide may be used in conjunction with an agent capable of forming the imide-halogenide, such as phosphorus chlorides or bromides or oxychloride or thionyl chloride. The products are C-substituted and are dyes or intermediates.  In examples (1) 1-amino-4-chloroanthraquinone is condensed with N-methyl-benzimide chloride in nitrobenzene to give 4-chloro-C-phenyl-1.9 - anthrapyrimidine; 4 - benzoylamino - C - phenyl-1.9-anthrapyrimidine is similarly prepared from 1-amino-4-benzoylaminoanthraquinone, and the benzoyl radicle may be removed by saponification: (2) 1-amino-5-benzoylaminoanthraquinone is condensed with N-ethyl-benzimide chloride; the resulting 5-benzoylamino - C - phenyl - 1.9 - anthrapyrimidine dyes golden-yellow shades and the benzoyl radicle may be saponified off by means of sulphuric acid: (3) N-methyl-benzamide, 1-amino - 4 - benzoylaminoanthraquinone and thionyl chloride are reacted together in chlorbenzene: (4) 1-amino-4-benzoylaminoanthraquinone, a -naphthoic acid methylamide and thionyl chloride are similarly reacted to give 4 - benzoylamino - C - naphthyl - 1.9 - anthra - pyrimidine (dyes yellow); using cinnamic acid methylamide instead a product dyeing orange shades is obtained and which is saponified by sulphuric acid; phenylacetic acid methylamide may alternatively be used, and the 1 - amino 4 - - benzoylaminoanthraquinone replaced by 1 - amino - 5 - benzoylaminoanthraquinone: (5) 1-amino-4-benzoylaminoanthraquinone, 2 - chloroanthraquinone - 3 - carboxylic acid methylamide and phosphorus pentachloride are heated together to give 4-benzoylamino-C-(2<1> - chloro - 3<1> - anthraquinonyl) - 1.9 - anthra - pyrimidine (dyes greenish-yellow); using benzanthrone-2-carboxylic acid methylamide a C-(2<1>-benzanthronyl) derivative is obtained: (6) 4 - amino - Bz3.5 - dichlor - 1(N).2 - anthraquinoneacridone (prepared by chlorinating the acridone in nitrobenzene, reacting the product with p-toluenesulphonamide and saponifying) is condensed with N-methyl-benzimide chloride to give a Bz3.5-dichloro-1(N).2-anthraquinoneacridone - C - phenyl - 4.10 - anthrapyrimidine: (7) 4 - amino - N - methyl - anthrapyridone and 1.5-diaminoanthraquinone are similarly reacted with N - methyl - benzimide chloride to give C - phenyl - 1.9 - pyrimidino - N - methyl - 4.10 - anthrapyridone and 1.9 : 5.10 - anthra - di-(C-phenylpyrimidine) respectively.  Specification 5998/09, [Class 2 (iii), Dyes &c.], is referred to.  The Specification as open to inspection under Sect. 91 specifies the use of a carboxylic acid alkylimide generally, but this subject-matter does not appear in the Specification as accepted.
Patent GB-876456-A (GB)
Title: Storage tanks for liquified gases
Inventor: HATANAKA TAD
IPC: F17C5/02
Filed: 1960-05-04
Abstract: 876,456. Storing liquefied gases. UNION TANK CAR CO. May 4, 1960, No. 15737/60. Class 8(2). A horizontally disposed storage tank 10 for liquefied gas at ambient temperature e.g. petroleum gas, comprising nozzle receiving means communicating with the interior of the tank and located at a point on the cylindrical wall thereof, the nozzle receiving means being disposed at an acute angle to the vertical diametrical plane of the cylinder 10 through the said point whereby the nozzle 25 can be detachably connected to the nozzle receiving means comprising a filling valve 15 screwed into the outwardly disposed face 27a of a forged bar 14 having inserts 14a within an aperture 13 of the tank 10 for attachment welding therein ; the face 27a has other threaded holes for pressure, a liquid height gauge and discharge valve, &c. The preferred angle of the filling valve 15 to the vertical is 45 degrees thus causing the liquid gas, on injection, to impinge upon the tank wall 10 just below the horizontal diametrical plane and thus cause a swirling motion 33 in the liquid gas and an enhanced heat transfer effect through the wall 10 of the tank with an associated drop in pressure and temperature and hence an increase in the filling rate.
Patent GB-1500445-A (GB)
Title: Method and apparatus for regulating the pressure of a fluid
IPC: G05D16/06
Filed: 1975-04-16
Abstract: 1500445 Fluid-pressure servomotor systems SOC EUROPEENNE DE DISTRIBUTION ELECTROMECANIQUE 16 April 1975 [17 April 1974] 15738/75 Heading G3P The pressure in a pipe 6 is maintained constant by a float-operated pilot valve 27 in a manometer 24 connected to the pipe, the pilot valve controlling the pressure on a diaphragm M to connect a chamber 5 leading to the pipe either to a source 3 of compressed air or to atmosphere 16, 17. The connections are controlled by valves 11, 12 mounted on a rod 9 while the pilot valve controls communication between a vent 25 and a conduit 20 connected through a restrictor 22 either with a source of compressed air or with the chamber 5.
Patent GB-824724-A (GB)
Title: A ball-bearing system
IPC: H01J35/10
Filed: 1957-05-17
Abstract: 824,724. Ball-bearings. CHIRANA PRAHA, NARODNI PODNIK, and JOSIFEK, J. May 17, 1957 [May 25, 1956], No. 15764/57. Class 12 (1). In a bearing for the rotating electrode 15 of an X-ray tube comprising balls 9 disposed between inner races 1, 2 of part-circular cross-section secured to a stud 3, and outer frusto-conical races 10, 11 spaced by a member 12 mounted in a housing 14 to which the electrode 15 is attached, the conical surfaces are arranged parallel to the directions D, Fig. 2, of relative expansions between the inner and outer races. In a modification, shown in Fig. 3, the inner races are conical and the outer races are partcircular in cross-section. In a further modification, the inner races 1, 2, Fig. 4, are spring- pressed towards each other.
Patent GB-396905-A (GB)
Title: Improvements in and relating to electrodes for discharge tubes
IPC: H01J1/22
Filed: 1932-06-04
Abstract: 396,905. Thermionic cathodes. ERBER, B. and SCHWITZER, A., (trading as GANZ & CO., G.), 45, Van der N³llgasse, Vienna. June 4, 1932, No. 15843. Convention date, July 8, 1931. Addition to 371,419. [Class 39 (i).] In the indirectly heated cathodes described in the parent Specification, discharges between the leads 8, 9 of the helical heating wire 7, liable to occur particularly when a larger voltage than usual is applied to the heater during the process of freeing the cathode from gas, are avoided by making the leads 8, 9 plain instead of helical and so reducing their temperature. Short circuits at the ends of the zig-zag sections of the wire 7 are prevented by making the connections between the sections also plain or by sinking these connections in grooves 10, 11, 12 in the insulator 2 as shown, with or without closure of the ends of the insulator as by caps. The plain parts of the wire 7 may be formed during the coiling or by stretching after coiling. Reference has been directed by the Comptroller to Specifications 326,617, 335,573, [both in Class 39 (i), Electric lamps, Arc &c.], and 360,036.
Patent GB-1179456-A (GB)
Title: A process for preparing Calcium Hydrogen Phosphate
IPC: C01B25/32
Filed: 1967-04-06
Abstract: 1,179,456. Calcium hydrogen phosphate dihydrate. CENTRAL GLASS CO., Ltd. 6 April, 1967 [6 April 1966], No. 15846/67. Heading C1A. Calcium hydrogen phosphate dihydrate is made by (a) adding to ammoniated wetprocess phosphoric acid of pH 3À6-6À0, from which all or a major part of the impurities precipitated by the neutralization have been removed, at least one basic sodium compound, and separating the crystals of microcosmic salt thus formed; (b) adding, to a solution of the washed crystals in water at 35-45 C., an aqueous solution of a water-soluble calcium salt in an amount such that the Ca/P mol. ratio is 1À0 to 1À3, maintaining the mixed solution at a pH of 3À5-5À0 and at a temperature not exceeding 45 C., and separating out the calcium hydrogen phosphate dihydrate produced by reaction between the microcosmic salt and calcium salt. Specified sodium compounds are soda ash and sodium hydroxide, and the mol. ratio of Na2O : P2O5 after the addition may be 1:1. The calcium salt may be calcium chloride, which may be contained in waste liquor from the ammonia soda process. The mother liquor obtained from step (b) may be recycled for use as a solution medium for the reaction beween the calcium salt and the microcosmic salt. The product may be crystallized in presence of a stabilizing agent consisting of sodium phosphates or trimagnesium orthophosphate. alpha- Calcium pyrophosphate may be prepared by calcining the calcium hydrogen phosphate dihydrate by calcining it at 320-370 C. for 4 hours.
Patent GB-924581-A (GB)
Title: Circuit arrangement comprising at least one transfluxor
IPC: H03K17/82
Filed: 1961-05-02
Abstract: 924,581. Magnetic storage devices. SIEMENS & HALSKE A.G. May 2, 1961 [May 2, 1960], No. 15930/61. Class 38 (2). [Also in Group XXXIX] A transfluxor having a transmission hole 10 (Fig. 3) is placed in blocked or transmission condition by pre-magnetizing means, such as windings 11v 12v, which continuously generate saturating fluxes on opposite sides i11 and i12 of the hole 10 in the same or opposite directions, this condition being changed when control current through winding 11s reaches a level at which the direction of flux in i11 is switched so that an A.C. input to winding E11 begins or ceases to produce an A.C. output in winding A1 The initial blocked or transmission condition appears again if the control current is increased to a level at which the flux produced in i12 by winding 12v is switched by winding 12s. When the control current is reduced the flux directions produced by windings 12v and 11v are reestablished, together with the appropriate transmission or blocking condition of the transfluxor, but at lower values of the control currents (Fig. 4, not shown), due to hysteresis. A large number of transfluxors may have their control windings connected in series and enter the blocking or transmission state one by one as the control current value changes. Two linked transfluxors 1, 2 (Fig. 5) may have their seriesconnected pre-magnetizing windings 11v, 12v, 21v, 22v arranged so that initially 1 is in transmission condition and 2 is in blocked condition. Increasing control current through windings 11s produces first blocking of 1 with cessation of A.C. output in winding Al, unblocking of 2 taking place at a higher value of the control current due to the extra turns in pre-magnetizing winding 21v. Alternatively winding 21v may be given fewer turns than winding 11v, so that 2 is unblocked before 1 is blocked. To ensure that 2 is unblocked only when 1 is blocked even if an inter-turn short-circuit occurs in control winding 11s, the two transfluxors may be disposed with the control holes 11, 21 arranged coaxially and linked by a common control winding. In an alternative arrangement two transfluxors are formed in a common core, pre-magnetization being produced by permanent magnets M1, M2 and M3 (Fig. 7) cemented into the core in which case windings 31v, 41v and 51v are not required. Alternating current of a frequency high in relation to the frequency of the current to be transmitted may be used for energizing the pre-magnetizing and control windings.
Patent GB-1261048-A (GB)
Title: Fluid pressure-indicating device
IPC: G01L7/08
Filed: 1969-03-26
Abstract: 1,261,048. Pressure indicators. JOUVENEL  & CORDIER S.A. March 26, 1969 [March 26, 1968], No.15932/69. Heading G1L. In a fluid-pressure indicator having a first diaphragm 4 overlaid by a second diaphragm 5 having one or more slits therein the arrangement is such than application of pressure through a bore 2 expands the first diaphragm 4 which distorts the second diaphragm 5 to open the slits to expose part of the surface of the first diaphragm 4 which is visually distinctive from the second diaphragm 5.
Patent GB-1507826-A (GB)
Title: Extruders and injection moulding machines
IPC: B29C48/395
Filed: 1974-04-10
Abstract: 1507826 Extrusion and injection moulding barrel BRITISH INDUSTRIAL PLASTICS Ltd 20 March 1975 [10 April 1974] 15987/74 Heading B5A A screw housing 1 for an injection or extrusion moulding machine is internally grooved either throughout its length, as shown at 13, or over a major portion of its length downstream of a feed zone A. The grooving may comprise a single groove or a plurality of grooves equidistantly or otherwise spaced around the bore of the housing. The grooves may be semi-circular in section or semi-elliptical as shown at 13<SP>1</SP> in Fig. 3, or they may be trapezoidal or rectangular. The grooving may be formed in a bushing 16 fitting closely within the housing 1, rotation of the bushing being prevented by a threaded stud 17. The grooving may alternatively be in the form of a helix. In further modifications, the grooving may comprise two large diametrically opposed grooves (13<SP>11</SP>) Fig. 4 (not shown) resulting in a bore of elliptical crosssection or the grooving may comprise a plurality of small shallow grooves or scratches (13111) Fig. 5 (not shown).
Patent GB-465693-A (GB)
Title: Improvements in or relating to steam engines
IPC: F01B17/04
Filed: 1936-06-09
Abstract: 465,693. Engine valves and valvegear. SOHOLT, J. A. June 9, 1936, No. 16121. Addition to 402,585. [Class 122 (ii)] In a double-acting, triple-expansion engine of the kind described in the parent Specification, the cylinders are provided with exhaust ports positioned in the cylinder walls between the middle and the two ends of each cylinder. Slide valves are arranged between the cylinders, and control the exhaust from the higher-pres. sure cylinders and the admission of the lowerpressure cylinders. The valves are arranged at each end of the cylinders which have two sets of exhaust ports placed preferably at a distance from the ends at positions of the pistons corresponding to a rotation of 60‹ of the cranks. The exhaust from the cylinders 4, 5 pass through ports 17, 17<1>, 22, 221 and passages 20, 201, 25, 25<1> to the ends of the cylinders 5, 6 respectively. The L.P. exhaust passes through ports 27, 271 to chests 28, 28<1> connected through pipes 29, 29<1> to a valve-controlled exhaust 30. The H.P. admission is controlled by valves as described in the parent Specification. The slide valve-gear is shown in Fig. 5. Eccentrics on a chain-driven shaft 34 operate links 39 connected by rods 41 to slides 42 carrying rollers which engage cam surfaces on rocking-levers 46 which actuate the valves 18, 18<1> against the resistance of springs 52, 53. The admission in the cylinders during forward motion lasts through 120‹, but in reverse, through 60‹.
Patent GB-247139-A (GB)
Title: Improvements in devices for the treatment of photographic films
IPC: G03D13/14
Filed: 1925-06-23
Abstract: 247,139. Correx-Ges. f³r Kinotechnik. Feb. 9, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Trays, dishes, and containers for roll films.- In apparatus for treating long or short films in the form of rolls with spaces between the convolutions, (1) the film 1 is wound on a drum 3 having a flange 6 forming a seating for the first convolution only of the roll; (2) the edges of the convolutions of the roll are held lightly in position by a pair of crossed stirrups, one of which is shown at 7, which have incurved central parts adapted to engage resiliently the interior wall of the drum, extensions 7<1> turned round the peripheral surface of the roll, and, if desired, feet for spacing the roll from the base of the developing &c. tank; (3) the convolutions of the film are spaced by an interwound apron 2 formed in known manner of the same material as the film and with hollow spacing bosses 4, and characterized in that the inner end of the apron is stuck or otherwise fixed to the drum, and in that the bosses 4 have points 12 inset from the edges of the apron and apertures 14 at the edges of the apron; (4) the roll is inserted for treatment in a tank 15 which may have ribs 24 for spacing the roll from the base, and a cover 16 having inward projections 17 which embrace the. centre of the stirrup 7 so that the roll may be rotated by turning the cover. The extensions 7<1> of the stirrups serve to space the roll from the sides of the tank. A second tank 19 may be provided which encloses the tank 15. and may be used for further treatment of the roll. Several rolls mav be treated together in one large container, which has a perforated base so that all the rolls are treated simultaneously in the various baths and drying chamber, and which may have partitions separating the rolls.
Patent GB-597659-A (GB)
Title: Improvements in or relating to electric converting systems
IPC: H02M7/62
Filed: 1945-06-26
Abstract: 597,659. Converting. STEVENS, A. H. (Electronic Laboratories, Inc.). June 26, 1945, No. 16260. [Class 38 (ii)] In a vibrator-operated converting system with a vibrator coil 20 energized from a D.C. source 23, the pulsating current is fed through an inductance coil to the primary winding 35 of a leakage reactance transformer 30 which has a magnetic shunt 33 located between the primary and secondary portions 31 and 32 of the core, the load 41 being connected in parallel with a condenser 40 across the secondary winding 39. As shown, two oppositely, disposed vibrator contacts 17, 18 are connected through the coils 25, 26 of a linear inductance 24 to the opposite ends of the transformer primary winding 35, which has a centre tap 38 connected to the battery. The two portions 33 comprising the magnetic shunt have air gaps 34.
Patent GB-407037-A (GB)
Title: Dyeing of cellulose ester and ether materials
IPC: D06P3/34
Filed: 1932-06-09
Abstract: Cellulose esters or ethers, dyeing; azo dyes.--Cellulose ester or ether materials are dyed in non-phototropic shades by applying thereto monoazo dyes of the type, a nitroaniline or a nuclear halogen, alkyl or alkoxy derivative thereof --> 1 : 3 : 5-xylenol. Specified diazo components are o-, m- and p-nitroanilines, m - nitro - p - toluidine, o - chloro - p - nitroaniline, and 4 - and 5 - nitro - 2 - anisidines.  In examples aqueous pastes of the dyestuffs (1) p - nitroaniline --> 1 : 3 : 5 - xylenol and (2) 5 - nitro - 2 - anisidine --> 1 : 3 : 5 - xylenol are added to a lukewarm dyebath in which cellulose acetate yarn is dyed (1) a reddish orange non-phototropic shade of very good light-fastness, (2) a yellowish orange non-phototropic shade very fast to washing, while raising the temperature during \ba1/2\be hour to 80 DEG  C. and thereafter maintaining this temperature for a further \ba1/2\be hour, washing and drying.
Patent GB-492546-A (GB)
Title: Improvements in electric radiators
IPC: F24C7/06
Filed: 1937-06-11
Abstract: 492,546. Heating by electricity. LIMIT ENGINEERING CO., Ltd., and COLLINS, A. L. June 11, 1937, No. 16308. [Class 39 (iii)] An electric fire has a rodtype heating element 33 mounted substantially along the focus of a reflector 31 of substantially parabolic crosssection. The reflector 31 is curved for distributing heat fanwise and has a number of re-entrant portions 32 for the not fully radiant parts of the heating element. The fanshaped reflection areas of adjacent parts of the reflector overlap, and so eliminate the effects of the non- radiating parts. The reflector may be composed of a number of curved sections dispoesd end to end, the curvature of each section being greater than the general curvature of the reflector as a whole ; and the reflection may be symmetrical with regard to a conical surface containing the focus. One or more lamps may be mounted within a reflector which does not comprise a complete ring. Specification 450,094 is referred to.