baber/WOPTO huggingface dataset:
Patent GB-239545-A (GB)
Title: Improvements in refrigerating apparatus of the absorption type
IPC: F25B37/00
Filed: 1925-03-28
Abstract: 239,545. Mond, A. L., (Platen-Munters Refrigerating System Aktiebolag). March 28, 1925. Refrigerating, absorption processes for.-In continuouscycle systems wherein a neutral gaseous medium such as hydrogen circulates between the evaporator 2, Fig. 1, and the absorber 3, to equalize the pressure throughout the system, the weak liquor flowing from the generator 1, after exchanging heat in a pipe system 7, 8 with the strong liquor flowing from the absorber to the generator, is further cooled before coming into contact with the gas mixture in the absorber, whereby the tendency of the neutral gas to entrain with it some of the vapour from the liquor in the upper part of the absorber is minimized. Preferably, this secondary cooling of the weak liquor is effected by the cooling-means of the absorber and in the upper part of the absorber, a construction of which is shown in Fig. 2. This absorber comprises a cylinder 3 surrounded by a cooling-water jacket 9 and fitted with sets of apertured discs 10, 11 spaced apart by rings 12. The discs 11 have two apertures 13 set in staggered relation to provide a sinuous upward path for the gas mixture entering from the evaporator by a pipe 6. The openings may be surrounded by shallow flanges 14 to maintain on the discs thin films of the liquor, which enters by a pipe 7 and flows downwards. The upper set of discs 10 are provided with central openings 16 having flanges 17 forming a passage for the outflow of the neutral gas and with side openings 18 for the down flow of liquor. The openings 18 may have shallow flanges to maintain films of liquor. The weak liquor is thus cooled in the upper part on the discs 10 while out of contact with the escaping neutral gas.
Patent GB-1337334-A (GB)
Title: Method and machine for assembling slide fasteners of separable end type
IPC: A44B19/60
Filed: 1971-04-19
Abstract: 1337334 Making slide fasteners; stamping YOSHIDA KOGYO KK 19 April 1971 [14 March 1970 (5)] 22518/71 Headings B3A and B3Q [Also in Division E2] A method of making slide fasteners from a fastener chain F, Fig. 2, consisting of a pair of springer tapes F 1 , F 2 , each having spaced elements E, comprises the steps of orienting the tapes at 111, into vertical planes with elements E at the lower edges, moving the tapes along lines L 1 , L 2 , threading a slider S on to tape F 1  at station 10, Fig. 4, applying a box component B to tape F 1  at station 70, Fig. 7, applying a pin component to tape F 2  at station 40, Fig. 2, advancing both tapes simultaneously until the required length of fastener is reached, and then cutting each tape at station 100. The tapes are moved through the machine and up to station 70, by reciprocating grippers 113, released, and then removed by further reciprocating grippers 110. Station 100 includes a pair of pivotable cutters 114, 115, and stops 112 which engage the tapes, whereupon an automatic cycle is started. Station 10 comprises lugs 13, 14, Fig. 4, carried by a shaft 11 and a sleeve 12, and the slider is held between the lugs which are clamped and released by sliding shaft 11 through sleeve 12, and are pivoted by rotating pinions 15, 16. Station 70, Figs. 6, 7, includes a pair of jaws 72 pivoted so as to clamp a box B, by eccentrics 79, and a vertically-movable punch 81 which secures a pin part Bp of Box B to the edge Ea of tape F. In a pre-clamping station 20, Fig. 2, a pin P, Fig. 16, is secured for retention on tape F 2  by hammers 22, Figs. 13, 14, which are pivoted to links 23 and move in arcuate grooves 26, 27, so as to squeeze the pin P on to tape F 2 . The latter passes to station 40, Fig. 2, where pin P is clamped to the tape by spring-urged dies 43, Figs. 18, 19, and a punch 55. Dies 43 are pivoted by a sliding block which carries adjustable rollers 48 adapted to engage cam paths 49 on the dies.
Patent GB-775661-A (GB)
Title: Improvements in or relating to copying lathes
IPC: B23B3/28
Filed: 1953-08-17
Abstract: 775,661. Copying-lathes. TONSHOFF, K., [trading as TONSHOFF & CO.]. Aug. 17, 1953 [Aug. 18, 1952], No. 22565/53. Class 83 (3). A copying-lathe has a tool-holder slide capable both of transverse and longitudinal movement under control of a single hand-lever, through the intermediary of transmissionelements and a longitudinal-slide, the latter moving longitudinally on longitudinal movement of the tool-slide and remaining stationary on transverse movement of the tool-slide. The lathe comprises a turret tool-rest on a cross-slide 10 carried by a longitudinal slide 5, Fig. 2. Movement of the cross and longitudinal slides is controlled by a single lever 2, which operates through lever-mechanism 3, 4, 11, 12, Fig. 4. A second hand-lever 13, Fig. 2, controls the movements of a further longitudinal slide carrying a drill or similar tool. Transverse movement of the cross-slide indexes the toolrest through a pawl-and-ratchet 30, Fig. 6. The pawl is mounted on an eccentric-shaft 33 which, after indexing, is turned to bring the tool in use on to a rest 28 for taking the cutting-thrust. Such a rest may also have its side edge formed as a templet for copying, in which case an adjustable stud 20, Fig. 5, carried by the tool-rest, contacts the rest-bar 18. A second templet-bar and stud 19, 21, respectively, may be provided. In a modified form, the lathe may have a selector -stop -drum 48, Fig. 8, geared at 46, 47, to the turret-spindle and having a stationary stopface 51 secured to the longitudinal-slide 51, and adjustable stop-studs 49, 50, &c., equal in number to the turret stations. When the studs protrude to the right to co-operate with the stop-face 51, the turning-operations are non- copying, but some of the studs may be adjusted to extend to the left of the drum where they co-operate with ledges 57, 58, on a downwardlyurged slide 52. The lower end of this slide carries a tracer 54 which co-operates selectively with a templet 55 or 56, according to the extent of protrusion of the stop-stud in the working position. Thus a combination of copying and non-copying operations may be performed in a single cycle of the turret tool-head.
Patent GB-406018-A (GB)
Title: Improvements in or relating to the treatment of mineral sand for the separation of one constituent therein from another
IPC: B03D1/06
Filed: 1932-08-12
Abstract: Zircon is separated from other constituents of mineral sands by treating the sand to produce selective oiling of the zircon particles and then forming a froth containing the oiled particles. The froth may or may not float on the surface of the pulp and in the latter case is separated from the unoiled particles by passing the pulp over shaking tables or jigs.  A sand containing zircon, rutile, monazite, ilmenite, garnet, quartz, cyanite, &c., is preferably first treated by magnetic separation to remove the ilmenite and most of the monazite and is then washed on shaking tables to remove the quartz. The residual sand is then agitated, preferably with a very dilute soap solution and an oil such as pine oil, eucalyptus oil, cresol, or a higher alcohol, to form a froth.  A thicker oil or fat such as oleic or other unsaturated fatty acid, olein or a similar glyceride, phenol or cresol, or sulphonated derivatives of any of these substances is preferably added to cause flocculation of the oiled zircon particles, the thicker oil or fat being preferably dissolved or dispersed in an alkali such as ammonia or caustic soda, or in an alcohol, or in p  the frothing oil.  To prevent oiling of the rutile, monazite, &c., the pulp is preferably made alkaline and the sand may be treated with an acid and then washed with water prior to agitation in the oily soap solution.  The flocculation of the zircon particles may be improved by the addition of small amounts of soluble salts of metals such as magnesium, zinc, lead, copper, or the alkaline earth metals, which produce insoluble soaps.  The froth may be formed in a rotating cylinder provided with agitating baffles or riffles, from which the pulp is passed over a small shaking table, the froth of oiled zircon particles being washed off by a slow current of water, or alternatively the froth may be formed in a sub-aeration flotation machine.  The zircon concentrate obtained in either case may be cleaned by washing with acid and then with water and retreating to produce a froth of the zircon particles. The soap used in the frothing process may be for example sodium oleate, sodium palmitate, sodium stearate, or the corresponding potassium salts, or the alkali salts of sulphonated derivatives of unsaturated alcohols, such as sodium oleylsulphonate.  In some cases the soap may be omitted and the zircon froth produced by a mixture of a frothing agent and olein, oleic acid, or other fatty or tarry oil.  Specification 406,043 is referred to.
Patent GB-1395611-A (GB)
Title: Method and apparatus for forming containers
IPC: B29C51/34
Filed: 1972-05-15
Abstract: 1395611 Sheet forming PIONEER PLASTIC CONTAINERS Ltd 11 May 1973 [15 May 1972] 22727/72 Heading B5A A method of thermo-forming a container comprises clamping and pressure moulding the periphery of a blank B to form a flat rim at the mouth of the container prior to, or concurrently with the formation of the body of the container. In the figures, a mould cavity formed by pivoted halves 10 is first raised to engage a clamping collar 2. Subsequently collar 2 is raised to engage a sheet W and concurrently piston 3 is lowered with members 4 and 5 to cut the blank from the sheet. Piston 3 with member 4 continues to move downwardly so that the rim is formed between surfaces 4A, 11A. Continued movement of the piston 3, together with applied air pressure or vacuum extends the blank until it conforms to the inside of the cavity 10. Finally upward movement of a piston 7 forms a false bottom. The mould halves 10 have cooled water ducts 12.
Patent GB-728204-A (GB)
Title: Improvements in or relating to methods of and devices for high-frequency heating
IPC: H05B6/42
Filed: 1953-08-18
Abstract: 728,204. Induction heating. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 18; 1953 [Aug. 21, 1952], No. 22746/53. Class 39 (3). A wire inductor coil 11 for heating workpieces having a diameter or greatest dimension at the surface required to be heated less than 12 mm. is externally wetted by a cooling agent prior to a heating operation. The high frequency generator terminals 1, 2 have bores 4, 5 to which liquid coolant is supplied via pipes 6, 7, and the inductor ends 9. 10 are secured in the bores by bolts 8. The coil may include a core 12.
Patent GB-301531-A (GB)
Title: A new or improved apparatus for cooling hay and other stacks in order to improve the quality of the contents, and to prevent spontaneous combustion of the same
IPC: F26B9/10
Filed: 1927-08-31
Abstract: 301,531. Jesty, F. T. Aug. 31, 1927. Treating with air.-To improve the quality of the contents of, or to prevent spontaneous combustion of, hay or corn stacks or ricks metal pipes 1 fitted with pointed plugs 2 at one end and provided with perforations 3, are driven into the stacks and air drawn therethrough by connecting the pipes to an exhaust fan. Each pipe 1 is screwed or jointed into an elbow 4 or a cross-piece 5, such elbow or cross-piece being provided with a boss 6 to facilitate driving the pipe into the stack. The pipes may be connected together by unions 10 and flexible metallic tubing 9, a main piece of flexible tubing 12 connecting them to the fan 11. The fan may be driven by an internalcombustion engine or by an electric motor, the fan and engine or motor being mounted on a track for transport. In a modification, several pipes 1 are attached by flexible couplings 9 to a suction box 13 that is coupled to the inlet of the exhaust fan.
Patent GB-927397-A (GB)
Title: Improvements relating to the transmission of electrical current between relatively movable conductor members
IPC: H02K31/04
Filed: 1958-07-03
Abstract: 927,397. Collecting gear for dynamo-electric machines. J. SAYERS. July 3, 1959 [July 3, 1958], No. 22850/59. Divided out of 21280/58. Class 35. [Also in Group XXXVI] The subject-matter of this Specification is substantially the same as that described in Specifications 927,394, 927,395 and 927,396, which are referred to, but the claims are concerned with the one or more shells 79 positioned in the electrically conductive liquid filled annular gap extending continuously between relatively the rotatable conductor members 27a, 28a. The shell is to reduce the viscous drag of the liquid, is positioned by one or two members 85, 85a of low coefficient of friction relatively to the shell, is made of copper, and may have plated on to its current communicating faces, a barrier layer of nickel and a wetting layer of copper; alternatively, the wetting layer may be replaced by a wetting treatment e.g. a zinc chloride flux or a nitric acid-etching agent.
Patent GB-1244529-A (GB)
Title: Improvements in or relating to ophthalmoscopes
IPC: A61B3/12
Filed: 1969-05-06
Abstract: 1,244,529. Opthalmoscopes. AMERICAN OPTICAL CORP. May 6, 1969 [Sept. 13, 1968], No. 22946/69. Heading G2J. In an opthalmoscope light from a filament 16 passes through a variable aperture 22, an optional colour filter 24, a condensing lens system 26, a partial reflector 34 and so into the eye P of the patient. Light from the illuminated fundus then proceeds to the observer's eye O via the reflector 34 and a demagnifying viewing system comprising an objective system 42 and an adjustable eye-piece 54. An image erecting lens system 46 may be incorporated together with a stop 53, the stop ensuring that there is only a small angle (approx.  degree) between paths 20a, 36a thereby making it possible to examine pupils obstructed by cataracts or merely pupils of small size since the stop separates the light from the part of the fundus being observed from the light reflected at the cornea. To reduce stray light from the reflector, a black glass absorber 40 is used to trap illumination light travelling straight through the reflector and the sides of the reflector are inclined at a small angle to reduce the effect of back reflections. The illumination system is contained in a handle (10), Fig. 3, (not shown) of the device and the viewing system in a body (6). The controls are mounted for easy, one handed manipulation of a rheostat knob (66), a dial (88) containing the filters, an aperture control lever (82) and a focus lever (134) which moves the eye-piece mount (132) through the effect of a pin (136), a crank (138), a key (140), a rod (142), a slide (144) and a slot (146).
Patent GB-586894-A (GB)
Title: Improvements in and relating to laminated springs
IPC: B61F5/30
Filed: 1944-11-18
Abstract: 586,894. Laminated springs. TURTON & SONS, Ltd., T., and WALKER, H. Nov. 18, 1944, No. 22966. [Class 108 (iii)] An eyebolt 4 at each end of a laminated spring is directly secured to the vehicle and passes through a hole 3 formed adjacent the end of the main plate 1 (and preferably also through several adjacent plates 2, 2<1>) so as to allow of movement of the spring relatively to the eyebolt 4 under load, auxiliary spring means 6 being provided associated with the eyebolt to damp or steady the main spring. The holes 3a in the underplates 2, 2<1> are elongated and the auxiliary spring means 6 may comprise a steel spring as shown, or a rubber spring. A wearing plate 8 is preferably interposed between the eye of the eyebolt and the main spring.
Patent GB-701380-A (GB)
Title: Improvements in hairdressing appliances
IPC: A45D2/22
Filed: 1950-09-20
Abstract: 701,380. Hair waving appliances. GREIN, P. F. A., and HUGHES, W. D. July 13, 1951 [Sept. 20, 1950], No. 23060/50. Class 131 A hairwaving humidifier comprises a sheet of rubber, or compressible plastic, preformed into cylindrical shape, with two parallel edges abutting, and having moulded ribs forming recesses wholly or partly over its inner surface. As shown, a rubber sleeve 1 is split longitudinally at 2 and is moulded interiorly with crisscross ribs and recesses 3 to provide reservoirs of suitable reagent for the waving process. The sleeve forms an intermediate layer between a tress of hair wound on a curler and an enclosing heater with or without the interposition of a sachet of plain or treated paper. The rubber sleeve also moulds itself to the shape of the wound tress giving good indirect contact between the heater and the hair. In a modification spaced pips or spikes are formed on the inner surface of the sleeve.
Patent GB-885768-A (GB)
Title: Derivatives of 3-phenyl-spiro(2h,1-benzopyran-2, 2-[2h, 1-benzopyran])
IPC: C07D405/12
Filed: 1960-07-01
Abstract: The invention comprises compounds of formula <FORM:0885768/IV (b)/1> where Ri and Ri1 are one or more substituents in the 5, 6, 7, 8, 51, 61, 71 and 81 positions, selected from CH3, C2H5, CH(CH3)2, C(CH3)3, CH2CH : CH2, C6H5, CF3, CN, COCH3, COOC2H5, COOCH3, OCOCH3, COOH, NH2, NHCH3, N(CH3)2, N(CH3)3+, NHCOCH3, NO2, PO3H-, OCH3, OC2H5, OC3H7, OC6H5, OH, SCH3, SH, S(CH3)2+, SCOCH3, SCN, SOCH3, SO2CH3, SO2NH2, F, Cl, Br, I. IO2 an <FORM:0885768/IV (b)/2> said substituents satisfying a given expression based on the sigma values of the substituents, these being given.  The compounds are prepared by condensing a suitably Ri-substituted salicylaldehyde with benzyl methyl ketone in ethanol with piperidine as catalyst to form a salicylidene intermediate and condensing the latter with a suitably Ri1-substituted salicylaldehyde in glacial acetic acid with hydrogen chloride as catalyst.  The preparation of the 61-nitro compound is described.  The compounds are photochromic (see Groups XX and XL (a)].
Patent GB-836711-A (GB)
Title: Improvements relating to cutting mechanisms of the reciprocating knife type
IPC: A01D34/30
Filed: 1956-07-26
Abstract: 836,711. Reaping-machines. MASSEYFERGUSON Inc., [formerly MASSEYHARRIS-FERGUSON Inc.]. July 26, 1956 [Aug. 10, 1955], No. 23085/56. Class 6(3). A knife bar 23 is attached by a double link 77 to a composite arm 55 the bottom end 85 of which bears hardened buttons 88 which slide in a guiding groove between two hardened plates 97 as the arm is swung back and forth by a swash-drive from a rotated shaft 40 to reciprocate the knife bar. The slide plates 97 are riveted by pins 98 on their backs to the inner faces of the vertical sides of a channel bracket 92, Fig. 5 (not shown) secured to an angle bar 10 to which knife guards 18 are bolted at intervals. The swash-drive of the arm 55 is derived from an obliquely-bored cylindrical block 44 splined to the drive shaft 40 which rotates in bearings 36 in a bracket 29 secured to the framework of harvester. A ring 53 bearing a stub shaft 60 is mounted on bearings 49 surrounding the block 44 and forms, with the shaft 60, the upper part of the arm 55. Needle bearings 64 separate this upper part (to allow it some rotary movement) from the lower part consisting of a cylinder 61 to which a member 69 bearing the bottom end 85 is bolted and which is held on to the shaft 60 by a washer 66 and bolt 67.
Patent GB-461436-A (GB)
Title: Improvements in or relating to the production of cellulose derivatives
IPC: C08B13/00
Filed: 1935-08-16
Abstract: Cellulose ether-esters are obtained by treating a cellulose ether with a halide of an aromatic sulphonic acid in the presence of a tertiary base at a temperature below 90 DEG  C., for example, 40--80 DEG  C., until the product is swollen by or dissolves in the said tertiary base.  Suitable halides are benzene, paratoluene, a  and b naphthyl and paraphenylbenzene sulphonyl chlorides; and suitable bases are pyridine, picolines, butidines, quinolines, tributylamine and dimethylaniline.  The solubility of the product may be promoted by catalysts such as pyridine, hydrochloride, hydrobromide and sulphate, benzylpyridinium chloride and ethylpyridinium chloride. The products are particularly resistant to water, acids and alkalies, and are useful for imparting non-inflammability, and they may be used for coatings, films, threads etc.  In examples, ethyl cellulose is added to a solution of paratoluene sulphonyl chloride in pyridine at 50 DEG  C., and cellulose triphenylmethyl ether and benzene sulphonyl chloride are dissolved in pyridine at 75 DEG  C.; in both cases the products are isolated and purified by methanol.  The Specification as open to inspection under Sect. 91 refers to the esterification of cellulose and of pretreated and partially substituted celluloses in general, and of other carbohydrates such as starch, galactan, insulin, chitin, chitosan, glycogen and polysaccharides, and also includes as esterifying agents substituted sulphonyl chlorides in general mentioning methane sulphonyl chloride, dodecane sulphonyl chloride, ethane sulphonyl chloride and aniline trisulphonyl chloride; it states that the esters may be used for the preparation of aminocelluloses by reacting with ammonia or a primary or secondary amine; and it includes examples for the esterification of cotton linters with paratoluene sulphonyl chloride in the presence of pyridine at 50 DEG  C., and further esterification of the product with the same reagent to give an ester suitable for the manufacture of films, and for the treatment with paratoluene sulphonyl chloride and pyridine of the product of reaction of alkali cellulose with paratoluene sulphonyl chloride.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1270107-A (GB)
Title: Anthraquinone dyestuffs
Inventor: LENG JOHN LINDLEY
IPC: C09B69/00
Filed: 1968-05-15
Abstract: 1,270,107. Anthraquinone dyestuffs. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 April, 1969 [15 May, 1968], No. 23134/68. Heading C4P. The invention comprises anthraquinone dyestuffs free from sulphonic acid carboxylic acid groups and having the general formula wherein R is H or optionally substituted alkyl, cycloalkyl, or aryl, Y is H or halogen, or an optionally substituted alkyl, alkoxy or aryloxy group; 2 is H or Cl, n is 1 or 2, X is a direct link or a divalent bridging atom or group e.g. -O-, -S-, -SO 2 -, -NH-, -N(alkyl)-, -CH 2 -, -CH 2 CH 2 -, Q is a primary, secondary, tertiary or quaternary amino group, the latter being associated with an anion, and rings A and B may be further substituted. They are prepared by (a) reacting an anthraquinone compound of the formula wherein R 1  Y, Z, n, are as above and R 1  is halogen in presence of a basic compound with preferably an excess of an amine of the formula wherein X, A and B are as above and Q1 is a primary, secondary or tertiary amino group; (b) alkylating the product of (a); or (c) reacting the anthraquinone compound of (a) with an amine wherein T may be subsequently converted by known methods into a group Q. The dyes give reddish-blue and greenish-blue shades in polymers and copolymers of acrylonitrile or dicyanoethylene, polyesters, polyamide and cellulose esters optionally acid modified.