baber/WOPTO huggingface dataset:
Patent GB-360569-A (GB)
Title: Improvements in and relating to printing devices
IPC: B41L47/46
Filed: 1930-09-17
Abstract: 360,569. Printing-surfaces. ADDRESSOGRAPH CO., 901, West van Buren Street, Chicago, U.S.A. Sept. 17, 1930, No. 27812. Convention date, May 12. [Class 100 (ii).] In printing devices of the kind comprising a forme provided with one or more apertures to receive removable portions adapted to print variable matter, the forme is mounted on a carrier provided with aligned apertures, and each removable portion has a section fitting in an aperture in the carrier and a section passing through the aperture and fitting in the corresponding aperture in the forme, the carrier and composite forme being removably mounted on a supporting member adapted to retain the removable portions in position. As shown in connection with the printing-roller described in Specification 349,922, comprising a peripheral undercut shoulder 20 towards which a split steel ring 23 is pressed by a cap 21 on tightening up a nut 25, electrotype or other permanent formes 29 are fixed by screws 30 or other means to the ring 23 and aligned openings are provided in the ring and the formes to receive segmental blocks 32, which are inserted when the ring 23 is detached from the roller, and, when the ring is replaced, rest on the periphery thereof. Spring- pressed balls 48 may be provided in the ring 23 to engage sockets in the blocks 32 so as to prevent the latter from falling out when the ring is removed. The openings in the ring 23 are shorter than those in the formes so that parts of each plate 29 project over the latter openings so as to engage corresponding shoulders 38, 39 on the block 32 and thereby limit the outward movement thereof. The types on the block 32 may be integral therewith, or may consist of a detachable electroplate screwed to the block, or, as shown in Fig. 7, the types may be on a sheet-metal strip 41 provided with turned-in ends 42, 43 engaging inclined slots in the block.
Patent GB-1260983-A (GB)
Title: Process for the preparation of methylene-bridged polyphenyl polyamines
IPC: C08G73/02
Filed: 1970-06-09
Abstract: 1,260,983. Polyphenyl polyamines and polyisocyanates. UPJOHN CO. 9 June, 1970 [25 July, 1969], No. 27845/70. Heading C2C. Methylene-bridged polyphenyl polyamines, the major component being an (aminophenyl)- .(aminoaryl) methane containing a substantial proportion of o,p<SP>1</SP>-isomer, are prepared by heating at 150-300 C. a mixture of (1) an aromatic primary amine and (2) an acid-free mixture of aminobenzylamines (defined as a mixture of N-phenylamine-2- or 4-benzylamine), obtained by condensing aniline with formaldehyde, in a molar ratio preferably at least 2 : 1 and at a temperature of not more than 100 C., in the presence of a mineral acid neutralizing the reaction product. Examples of primary aromatic amines are aniline, the toluidines, the xylidines, alkyl anilines, tolylenediamines, diaminodiphenyl, diaminodiphenyl methane, fluoro-, chloro-, bromo- or iodo-anilines, 4-cyanoaniline, 2-nitro-aniline, alkoxyanilines, alkoxyphenylene diamines. The polyamine products act as curing agents for epoxy resins or can be phosgenated to form the corresponding polyisocyanates; in examples 3-methyl-2(or 4),4<SP>1</SP>-diisocyanate diphenyl methane and 3-methyl-2,4,4<SP>1</SP>(or 4,4<SP>1</SP>,6)- triisocyanato diphenyl methane are prepared.
Patent GB-535225-A (GB)
Title: The manufacture of foundry moulds and cores
IPC: B22C1/16
Filed: 1939-10-13
Abstract: 535,225. Mould materials. SOC. D'ELECTROCHIMIE D'ELECTRO-METALLURGIE ET DES ACIERIES ELECTRIQUES D'UGINE. Oct. 13, 1939, No. 27892. Convention date, Nov. 5, 1938. [Class 83 (i)] To prevent local fusion of foundry moulds and cores, particularly as described in Specifications 319,777, [Class 83 (i)], 351,592, and 356,245, they are faced, wholly or in part with material comprising mainly mullite, andalusite, silliamanite, cyanite or other high aluminium silicate and sub-hydrated Portland or alumina cement. A mixture of 100 parts by weight of the aluminium silicate, 13 parts of Portland cement and enough water to make it mouldable is tamped about the pattern to form a layer of inch to over 2 inches thick and then sand, cement mixture, green or dry sand, cinders or the like is applied.
Patent GB-308760-A (GB)
Title: Improvements in retort ovens for low temperature carbonisation
IPC: C10B49/00
Filed: 1928-09-28
Abstract: 308,760. Compagnie Generale de Distillation et Cokefaction a Basse TempÚrature et MiniÞre, Intertrust Soc. Anon., (Assignees of International Holding de Distillation et Cokefaction a Basse Temperature et Miniere "Holcobami " Soc. Anon.). March 28, 1928, [Convention date]. Retort furnaces.-In retort furnaces of the kind described in Specification 229,880 in which a number of retort chambers o are fired in succession after the manner of a continuous kiln, each retort chamber has associated with it a separate combustion chamber k so that the retorts are not heated by direct flame. The setting is surrounded by a pipe a, which is connected to a gas supply b, and to a waste gas offtake c, and is fitted with valves s for isolating sections of the pipe, and double valves v for connecting branches a<1> either with the pipe a or with the atmosphere. In operation, combustion of gas is effected in one of the chambers k with air, which has been preheated in passing through previously fired retort chambers, and the products are passed through the succeeding retort and combustion chambers until they are cool enough to be taken to the offtake flue c. The retorts r are arranged in staggered formation in the chambers o, and baffles r' are. fitted to cause the gases to take a sinuous course.
Patent GB-646684-A (GB)
Title: Improvements in or relating to children's chairs
IPC: A47D1/04
Filed: 1948-10-27
Abstract: 646,684. Nursery chairs. WILDHABER, A. Oct. 27, 1948, No. 27915. Convention date, Aug. 23. [Class 52 (ii)] A nursery chair which is adjustable in height and can be used as a rocking chair comprises two U-shaped side frames 1, to which the seat 2, back 3, &c. are secured and each side frame 1 has pivoted thereto a pair of legs 7 each pair of legs having intermeshing gears 9 secured thereto so that the legs can be caused to approach or recede from each other in unison. One of the gears 9 of each pair has apertures whereby the gears 9, and thereby the legs 7, may be locked in adjusted position by means of a spring-pressed bolt which is withdrawable by means of a rod having a handle 16 when it is desired to move the legs to a different position. The legs can be caused to be spread into a position wherein the curved portions of the legs form a rocker for the chair.
Patent GB-1440023-A (GB)
Title: Monitoring the production of sheet material oil and solid waste scavenging craft low pressure mercury vapour discharge lamp
IPC: G01N27/00
Filed: 1973-06-12
Abstract: 1440023 Automatic control INDUSTRIAL NUCLEONICS CORP 12 June 1973 [12 June 1972] 27992/73 Heading G3N Apparatus and method of deriving an output signal for use in the control of a characteristic of a travelling sheet comprises deriving first signals indicative of the value of a property related to the characteristic at each of a plurality of discrete spaced locations across the sheet deriving second signals indicative of values of predetermined mathematical expressions relating values of the property to location on the sheet, responding to the second signals to derive a third signal representing a continuous, analytic equation that approximates the values of the property as a function of sheet location substantially across the entire sheet width, and integrating the third signal over a distance across the sheet to obtain the output signal. As shown, three sensing gauges 21-23 are employed across the sheet 5 and the outputs from these are averaged respectively at 31-33 and passed together with position information X a -X c  to a digital computer 40. The equation referred to above is Y = AX<SP>2</SP> + BX + C and the second signals are indicative of the values of coefficients A, B, C derived from expressions involving the output values of 21-23 and values X a -X c , the derivation of these expressions being given in the Specification. From this the values of Y for all X may be obtained and this information is passed to an integrator 70 where the units of integration (X 1 , X 2 ) may be introduced. The output from the integrator may be compared with a target value at 80 and control exerted on a processing device 10. Integration may be in overlapping or non-overlapping zones and the control may be exercised independently for each zone, or as illustrated, it may be a whole width integration. The applications listed are paper making, steel rolling, rubber and plastics calendering, sheet coating and the measured characteristic may be thickness, weight per unit area, moisture content, resistivity.
Patent GB-1171013-A (GB)
Title: Improvements in or relating to Textile Machines.
Inventor: SLACK IAN DAVID
IPC: D01H1/10
Filed: 1967-06-17
Abstract: 1,171,013. Ring twisting spindle. PLASTICISERS Ltd. 17 June, 1968 [17 June, 1967], No. 28025/67. Heading D1D. A ring twisting machine comprises a hollow bobbin spindle 40 through which the thread is passed to assist threading up. The leading end of the yarn is fed through the spindle, assisted by down draught produced by a vacuum device 46 or blower 60, and into the nip of rollers 42, 44. The thread is looped onto the ring 34 and caught by the bobbin notch 48 as the spindle rotates. The end of the yarn is then caught by hook 50 and cut. The spindle is belt or motor driven, in which latter case each spindle is individually driven.
Patent GB-1064196-A (GB)
Title: Process for the manufacture of phosphate pellets
IPC: C01B25/01
Filed: 1964-07-08
Abstract: Phosphate pellets are produced by spraying crude phosphate powder placed on a granulating plate with an aqueous suspension or pulp which contains finely divided solid matter and also dissolved substances acting as a binder and then drying, hardening and baking the green pellets.  The solid matter is e.g. electrofilter dust obtained in electrothermal production of phosphorus.  The dust contains water-soluble alkali metal phosphates and from it an aqueous suspension containing 25 to 30% solid matter and up to 5% dissolved phosphate is produced and sprayed on to the crude phosphate. A bentonite suspension containing 25 to 30% bentonite and an added quantity of up to 2.5% soluble alkali metal phosphates may be sprayed on to the phosphate, simultaneously with the dust suspension, either mixed with the latter or sprayed on to the centre portion of the plate while the dust suspension is sprayed near to the rim. Similarly an aqueous phosphate suspension, of the type obtained from wet dust removal means used in phosphate dressing, containing about 30% phosphate and up to 2.5% added soluble phosphates may be sprayed simultaneously with the electrofilter dust suspension.  In another embodiment, a working suspension containing electrofilter dust and the aforementioned bentonite and phosphate suspensions is used, optionally together with waste products from condensed phosphate manufacture. The water soluble alkali metal phosphates used, except those contained in the electrofilter dust, are sodium phosphates, metaphosphates, pyrophosphates, tri - polyphosphates or higher condensed phosphates.
Patent GB-603606-A (GB)
Title: Improvements relating to styli for sound reproducing
IPC: G11B3/48
Filed: 1945-10-25
Abstract: 603,606. Gramophone stylus. KILLICK, M. L. Oct. 25, 1945, No. 28214. [Class 40 (ii)] A sapphire stylus for a gramophone has a conical part e having a subtended angle between 29 and 90 degrees and ground at the tip to form a flat f with a diameter between 0.001 and 0.005 inches, so that substantially a point contact is made with the inclined side walls c, d of the groove.
Patent GB-464061-A (GB)
Title: Improvements in and relating to splice-up apparatus for paper webs feeding a printing press
IPC: B65H19/16
Filed: 1935-10-12
Abstract: 464,061. Feeding webs. JAMES, H. V., TAYLOR, H., and YATES, H. Oct. 12, 1935, No. 28235. [Class 100 (i)] In a printing-press comprising a number of units such as printing units U<1>, U<2>, Fig. 1, and folding unit U<3> synchronized by a common shaft A running along the line, means for driving the replacement reels so as to bring their peripheral speed up to that of the expiring webs before a web renewing operation, comprise slip ring induction motors 3, Figs. 1 and 2, for driving the replacement reels and a similar motor 1, the rotor of which is driven by the shaft A, the primary windings of the motors being connected to the mains AC, and the secondary windings being connected in parallel by bus-bars BB so that the motors operate in synchronism. The motors 3 may drive the rolls through belts 4 such as described in Specification 336,256, [Class 100 (i)]. The Provisional Specification also describes the application of the reel driving means to a multi-unit press in which the units are synchronized electrically instead of by a longitudinal shaft.
Patent GB-617140-A (GB)
Title: Improvements in or relating to spring and insulator stud assemblies, and apparatus for forming such assemblies
IPC: H01H50/54
Filed: 1946-09-20
Abstract: 617,140. Jointing by stamping. STANDARD TELEPHONES & CABLES, Ltd. Sept. 20, 1946, No. 28302. Convention date, Sept. 24, 1945. [Class 83 (iv)] [Also in Group XXXVII] Insulating studs 3 are mounted on blade springs 1 by forming an aperture in the spring with marginal extrusion of the metal 4, placing the stud within the aperture, Fig. 2, and then, by means of an annular punch and die, compressing the metal extrusion 4 so that it is displaced inwardly into compressive engagement with the stud. The stud may be of hard rubber or phenol fibre composition and is deformed in the process, Fig. 4.
Patent GB-364111-A (GB)
Title: Improvements in and relating to process for preparing absolute alcohol and commercially pure powdered hydrated lime
IPC: B01D3/00
Filed: 1930-09-22
Abstract: In the dehydration of alcohols by lime, absolute alcohol and substantially completely hydrated lime powder are obtained simultaneously by using only 5-20 per cent excess of lime and agitating continuously throughout both the refluxing and the distilling off of the alcohol.  The residual lime may be completely hydrated by addition of the calculated quantity of water.  In an example, 2000 lb. of 92 per cent ethyl alcohol and 600 lb. of granular 95 per cent lime are refluxed for 4-6 hours, using a horizontal steam-jacketed still provided with a horizontal agitator, and the alcohol then distilled off; 1830 lb. of alcohol containing less than 0,10 per cent of water are obtained.  25 lb. of water are added to the hot powder in the still and agitated therewith until hydration is complete; 790 lb. of dust-like hydrated lime results.ALSO:In the dehydration of alcohols by lime, absolute alcohol and substantially completely hydrated lime powder are obtained simultaneously by using only 5-20 per cent excess of lime and agitating continuously throughout both the refluxing and the distilling off of the alcohol.  An example is given.
Patent GB-408022-A (GB)
Title: Improvements in electric signalling systems for mines
IPC: B66B19/06
Filed: 1932-10-11
Abstract: 408,022. Electric signalling systems. QUICK, T., Haxby House, GOUGH, T., 5, Willow Street, and ROBINSON, F. K., The Haven, all in South Elmsall, near Pontefract, Yorkshire. Oct. 11, 1932, Nos. 28320/32 and 8178/33. [Class 40 (i).] In a signalling system for use in mines, in which the position from which a signal is given is determined by marginal relays, all the relays are provided with protective windings for damping the open spark, all are connected in series and in series with the alarm bell, and an operated relay closes a circuit for a second indicator lamp which remains lit until released by the attendant. The signalling lines a, b, which may be bare wire, are sectionalized as indicated, and when the lines are joined, a circuit is completed from battery 7 through bell relay 10 and relays r1-r6 in series. The relays r1-r6 are marginal and are arranged so that r6 pulls up on a weak current and r1 on a strong current, the remaining relays requiring intermediate strengths to energize. If the line is joined at A, as none of the section relays R1-R6 are in the line circuit, rl energizes, closing its locking circuit through 22 and opening the locking circuits of relays r2-r6. The locking circuit of rl includes battery 34, lamp 1 and relay r1<A> so that r1<A> energizes and locks in a circuit including lamp 1<A>. The attendant extinguishes lamp 1 and releases r1 by the operation of cancelling key 103 and can release 1<A> by means of key 107. The locking circuit of r1<A> includes coils 29-33 of relays r2<A>-r6<A> which hold the armatures of r2<A>-r6<A> in inoperative position whilst r1<A> is energized. The signals given are repeated to all sections of the haulage track by relays R1-R6.
Patent GB-909042-A (GB)
Title: Improvements in or relating to gramophone pick-ups
Inventor: MORTIMER EDMUND WALTER
IPC: G11B3/08
Filed: 1960-08-16
Abstract: 909,042. Supporting gramophone pick-ups. GARRARD ENGINEERING & MANUFACTURING CO. Ltd. Aug. 15, 1961 [Aug. 16, 1960], No. 28329/60. Class 40 (2). An extensible pick-up arm 2 is supported on a swing arm 1 to provide appropriate tracking for 33 and 45 r.p.m. records, the latter within the confines of the deck 4. A retractable sliding arm (not detailed) may replace the swing arm 1 and in either case, movement between the two positions may change the speed of the turntable 5.
Patent GB-603653-A (GB)
Title: Whetstones
IPC: B24D15/02
Filed: 1945-10-26
Abstract: 603,653. Whetstones. JORGENSEN, K. A. V. Oct. 26, 1945, No. 28348. [Class 60] A whetstone is characterised by having a hole or recess 2 at both ends of the stone 1 for the fastening of two holding devices 3 for handles 4.
Patent GB-431769-A (GB)
Title: Improvements in keyboard transmitters for teleprinters
IPC: H04L15/16
Filed: 1933-10-13
Abstract: 431,769. Type - printing telegraphy. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Oct. 13, 1933, No. 28381. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 28, 1934]. [Class 40 (iii)] In a keyboard arrangement for transmitting combinations of electrical impulses, means are incorporated for indicating when the signal combination corresponding to the key depressed has been transmitted. On the depression of a key 1 a roller 10 on a pivoted frame 7, positioned beneath the keys, is brought into an operative position with respect to a cam 5 on the shaft 4 of a contact cylinder 2. On the completion of a revolution by the cylinder 2, the cam 5 engages the roller 10, and the opposite end of the frame raises the depressed key.
Patent GB-965530-A (GB)
Title: Improved electronic switching circuit
IPC: H03D1/22
Filed: 1960-08-16
Abstract: 965,530. Transistor switches and amplifiers; phase-sensitive rectifiers. GENERAL PRECISION Inc. Aug. 16, 1960 [Aug. 17, 1959], No. 28407/60. Headings H3A and H3T. A switching circuit. Fig. 2f, comprising a transistor having a control signal Eb applied between its base and a terminal is characterized in that a first circuit containing a diode D-1 is connected between the terminal and the collector, and a second circuit containing a further diode D-2 is connected between the terminal and the emitter, the arrangement being such that a control signal of one polarity will forward bias both junctions, and one of the opposite polarity will reverse bias both junctions. Series resistors R-C, R-E are provided in series with the diodes D-1, D-2, values being such that the voltage drop across the emitter-base junction substantially equals that across the collectorbase junction. Resistors R-11, R-12 may be provided in parallel with the diodes, and further resistors R-13, R-14 in parallel with the collector-base and emitter-base junctions. The two diodes may be the base-emitter and collectorbase junctions of a further transistor of opposite conductivity -to the first. In a practical form of the switching circuit, Fig. 3a, two transistors T-1, T-2 of the same conducting type have their emitters connected together to a common load R-L. Antiphase switching signals are provided by secondary windings 12, 13 of transformer 11, such that T-1, T-2 conduct alternately to connect either signal source 16 or 17 to the load. The functions of signal source and load may be interchanged and the transistors may have their collectors connected together instead of their emitters, or may be symmetrical transistors. In a modification, Fig. 3b (not shown), the diodes are shunted by resistors. Switching circuits as described may be used as choppers in a chopper-type D.C. amplifier, Fig. 4, having negative feedback over resistor R-FB. Two switches T-1, T-2 supplied with antiphase signals may be provided as shown, or the switch T-2 may be replaced by a known type. A phase sensitive rectifier, Fig. 5, comprises two transistor switches T-1, T-2 having their emitters connected together to an output load R-L. The input signal is connected to terminals 51, 52 and a reference signal connected to terminals 57, 58 is fed in antiphase to transformer windings 62, 63 connected to the bases of transistors T-1, T-2 respectively. The emitter and collector of each transistor is connected via a separate diode D-1 - - - D-4 and resistor to the associated transformer winding, the arrangement being such that both emitter-base and collector-base junctions of one transistor are forward biased, and those of the other reverse biased, during one half cycle of the reference signal and vice versa during the other half cycle.
Patent GB-842743-A (GB)
Title: A process for obtaining glycols from dilute sugar solution
Filed: 1957-09-10
Abstract: In a process for obtaining glycols from a dilute wood solution obtained by the hydrolysis of wood by sulphuric acid, the solution is clarified, freed from acid and catalytically hydrogenated; the resulting hexitol-pentitol solution is concentrated by adsorption on an anion exchanger impregnated with boric acid or borax and the adsorbed hexitol-pentitol mixtures displaced from the anion exchanger by an aqueous neutral liquid the weight of which is less than the weight of the solvent in the adsorption solution; the concentrated hexitol:pentitol solution is subjected to catalytic hydrogenative cracking and the products in the solution are adsorbed individually or in common on anion exchangers impregnated with boric acid or borax from which they are displaced by means of aqueous neutral liquids, the weights of which are together less than the weight of the solvent in the solution obtained by cracking the hexitol-pentitol solution. Suitable aqueous neutral liquids are, for example, an aqueous solution of a salt such as sodium sulphate, which can be used for displacing hexitols, an aqueous hexitol solution, which can be used for displacing glycerin, and water, which can be used for displacing 1,3-propylene glycol.  In the example, a wood sugar solution obtained by the Scholler process is treated as described above to produce a hexitol-pentitol solution which is adsorbed on an anion exchanger previously treated with borax; the hexitols and pentitols are displaced by treating the ion exchanger with sodium sulphate or ammonium sulphate solution; the concentrated hexitol-pentitol solution is catalytically hydrogenated and the resulting solution treated with various anion exchangers which are treated respectively with sodium sulphate solution to displace the sorbitol, aqueous hexitol solution, to displace glycerol, water to displace 1,2-propylene glycol, water to displace ethylene glycol and water to displace 1,3-propylene glycol.  Specification 838,501 is referred to.