baber/WOPTO huggingface dataset:
Patent GB-230170-A (GB)
Title: A new or improved method of and apparatus for making paper
IPC: D21F9/04
Filed: 1923-12-05
Abstract: 230,170. Milne, S. Dec. 5, 1923. Cylinder paper machines; cylinders and drums. - In making paper, the pulp is led on to or against a wire - cloth covered perforated drum b revolving around a stationary conduit c, the space between the conduit and the drum being divided into compartments communicating separately by holes c<4>, c<5> with different parts of the conduit. In operation, the pulp collects over the. compartment 1, water being drawn away at one end of the conduit by a water pump. Over compartment 2 suct'ion draws further water and air which are carried away at the other end of the conduit, a partition in the conduit making this possible, and beyond this the pulp sheet is led off at a convenient point, a compartment' connected with an air blower being provided for this purpose if desired. A further compartment may be provided for washing the drum. Arrangements are described for making and combining a number of webs, and for using the drums immersed in pulp vats. Fig. 12 shows two drums combined with a wire cloth, one drum a forming the sheet and the other c withdrawing the water. Reference has been directed by the Comptroller to Specifications 22596/95, 76/02, 5219/06, 5733/11, and 170,918.
Patent GB-745289-A (GB)
Title: Improvements in punching machines for sheet metal
Inventor: ASCHENBRENNER GEORGE
IPC: B21D28/00
Filed: 1952-12-03
Abstract: 745,289. Punching. GEIER-WERKE GES. Dec. 3, 1952, No. 30642/52. Class 83 (4). A machine for punching blanks from sheet metal has a double-armed pivoted beam 4, 6 oscillated about its pivot 3 by a drive applied to one arm 4 thereof and the other arm 6 operates one of a pair of platens 31, 32, Fig. 3, hinged together at 35, which platens carry the punching tools or dies. The beam is driven by an eccentric 7 through a latch 9 and disengageable pawl 10. A stop screw 13 limits the oscillating movement of the beam. The lower platen 32 carries a fixed die 40 co-operating with a moving tool 38 carried by the upper platen 31. The hinge 35 permits lateral adjustment of the upper and lower dies.
Patent GB-341405-A (GB)
Title: Process for the manufacture of easily soluble sodium salts of acylamino-phenol-arsinic acids
IPC: C07F9/74
Filed: 1929-10-09
Abstract: Disodium salts of 3-acylamino-4-phenol-1-arsinic acids and their nuclear derivatives, which are readily water-soluble and useful therapeutically, are prepared by dissolving the acid in at least double the equivalent quantity of an aqueous caustic soda or sodium carbonate solution and precipitating the disodium salt with an agent, such as alcohol, acetone or common salt solution, which is soluble in water but does not dissolve the sodium salt.  The solutions prior to precipitation or aqueous solutions of the isolated salts may be used for injection.  Examples are given of the preparation of the disodium salts of 4-hydroxy-3-acetaminobenzene-arsinic acid and 4-hydroxy-5-chloro3-acetaminobenzene-arsinic acid. Specifications 224,764 and 264,797, [both in Class 2 (iii), Dyes &c.], are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) includes an example of the preparation of the disodium salt of 4-hydroxy-3-benzoyl-aminobenzene-arsinic acid.  This subject-matter does not appear in the Specification as accepted.
Patent GB-746072-A (GB)
Title: Improvements relating to the manufacture of dies for use in die forging
IPC: C23F1/02
Filed: 1953-11-05
Abstract: 746,072. Etching. WURTTEMBERGISCHE METALLWARENFABRIK AKT.-GES. Nov. 5,1953 [Nov. 6, 1952], No. 30678/53. Drawings to Specification. Class 100 (2). [Also in Group XXII] In a method of making dies (see Group XXII) the inner surface of the die is coated with an acid-proof substance, such as lacquer, which hardens after application, a positive pattern of the exact shape required is pressed into the die to remove the coating at those parts of the inner surface against which the pattern bears, the pattern is then removed and the inner surface is subjected to acid attack to etch away the exposed die metal: the etching operation is repeated as many times as necessary. The lacquer is applied by painting, spraying or dipping.
Patent GB-860868-A (GB)
Title: Improvements in or relating to pigments
Inventor: SCHWITZER MATTHEW KARL
IPC: C09C3/08
Filed: 1956-10-09
Abstract: Pigments are treated to render them readily soluble in organic vehicles by adding to an aqueous slurry of the pigment a compound of the type RNR1R11COOY where R is an alkyl group containing from 8 to 20 carbon atoms or a substituted alkyl group containing amine or polyamine groups, R1 is H or an alkyl group, R11 is a straight or branched chain with from 1 to 6 carbon atoms and Y is H, a metal, or an alcoholic residue or acyl group, and thereafter removing the solid and drying.  Examples are given of adding N-coco-betaaminobutyric acid to Prussion blue (1) after precipitation and washing and (2) after precipitation but before washing.
Patent GB-172840-A (GB)
Title: Improvements in, or connected with, apparatus for use in soldering sheet-metal tins,or canisters, or analogous receptacles, or articles
IPC: B23K1/14
Filed: 1920-11-01
Abstract: 172,840. Taylor, E., and British-American Tobacco Co., Ltd. Nov. 1, 1920. Soldering.-In a machine for soldering the ends or covers to circular tobacco or like tins or canisters or heads or caps to the ends of the tubes, rods, ferrules, &c., of the type in which the tins &c. are rolled in contact with molten solder supplied from a bath, the solder is supplied under pressure to the work through a series of perforations at considerable intervals apart in a cbambered bar, instead of through a continuous slot, so as to avoid waste of solder and improve the finish of the tins. A series of holes c with flared lower ends supply solder from a closed chamber b in the bar a. The portions of the top of the bar between the holes act as soldering-irons. An unperforated portion or continuation c<3> of the bar may be provided to remove or equalize excess of solder. The bar may have a series of holes d to receive bolts &c. to secure it in place.
Patent GB-1511524-A (GB)
Title: Vehicles with multi-axle suspension assembles
IPC: B60G17/04
Filed: 1975-07-24
Abstract: 1511524 Tandem axle suspensions DAIMLERBENZ AG 24 July 1975 [26 July 1974] 31006/76 Heading B7D In a vehicle having a superstructure supported on driven and undriven tandem axles 211, 212 by air springs 213, 214 connected to a level regulating valve 217, the load carried by the driven axle 211 is kept at a maximum to avoid slipping of the driving wheels by connecting the spring 213 to the level regulating valve 217 through a cut-off valve 233 which prevents release of air from the spring 213 when the vehicle load decreases until the spring 214 on the undriven axle 212 has been fully relieved of load. A by-pass valve 237 opens whenever the level regulating valve 217 connects the springs to an accumulator 218 so that air can be admitted to the spring 213 when the vehicle load increases. A relief value 241 prevents excessive pressures in the spring 213. In another embodiment the arrangement according to the invention is combined with one in which pressurization of the spring on the undriven axle is prevented unless the spring on the driven axle is at full pressure. This system also includes separate levelling values for each axle and a manual control valve by means of which the level regulating valves can be over-ridden.
Patent GB-1434414-A (GB)
Title: Analogue to digital converters
IPC: H03M1/50
Filed: 1973-06-29
Abstract: 1434414 Analogue to digital converter SOLARTRON ELECTRONIC GROUP Ltd 28 June 1974 [29 June 1973] 31027/73 Heading H3H In an analogue to digital converter in which the analogue input is integrated, a periodic signal is superimposed on the integrated signal and when the resulting signal is outside a predetermined range, a reference voltage, of opposite polarity to the analogue input, is applied to the integrator input. Clock pulses are counted over an integral number of cycles of the periodic signal while the reference voltage is applied. The integrator 14 comprising amplifier 16 and capacitor C1 has as inputs the analogue signal at R1, a square wave (produced from clock pulses by division) via C2 and R2 and Vref or ground via one of switches FET1- FET3 and R3. The integrator output is connected to two comparators 34, 38 operating at voltages V1, V2 which are preferably plus and minus a portion of Vref. The comparator outputs are connected to clocked bi-stable 48, 50 the outputs of which gate pulses from clock 26 to the up or down inputs respectively of counter 66 and select  Vref via FET1 or FET3. Sequence controller 76 activates the counter for 10 square wave cycles and at the eleventh cycle, transfers the count to the display. The square wave amplitude is preferably arranged so that the periodic waveform (Fig. 2b) produced by integration of the square wave has an amplitude less than V1-V2. In operation, with a negative input voltage (Fig. 2c), the integrator output climbs until V1 is reached. Bistable 48 is set and enables gate 54 to supply clock pulses to the up counter input. FET1 is also switched to apply + Vref to to the integrator. At the peak output voltage the square wave turns positive and when V1 is reached gate bistable 48 is reset, gate 54 closed, FET1 turned off. For the remainder of the cycle the input is + Vs-Vin. After 10 cycles, the counter is disenabled, the count therein being a digital representation of the analogue input. The next square wave cycle enables gates 69 and transfers the count to decoder 72 and display unit 74. A bi-stable circuit 77 is alternately set and reset by zero passage of the counter and signals the decoder to generate a '9's complement when the count has gone from zero to all '9's and to generate a polarity signal for the display. To remove errors due to component imbalance, the reference voltages may be applied for equal, short (<5% of cycle) periods in each cycle even if threshold devices 34, 38 do not operate.
Patent GB-965407-A (GB)
Title: Improvements in or relating to sealing arrangements for agitator or impeller shafts and the like
IPC: F16J15/52
Filed: 1959-09-11
Abstract: 965,407. Agitators. H. D. JONES. Dec. 12, 1960 [Sept. 11, 1959], No. 31035/59. Heading B1C. [Also in Division F2] In an impeller or agitator drive arrangement comprising a drive shaft 2, Fig. 1, having a straight portion externally and a bent portion 3 internally of a chamber 12, the free end of the shaft being bent back so that its axis lies along that of the straight portion, and having freely mounted thereon a flexible torsionally resilient bearing sleeve 5 fixed against rotation at one end 11, the shaft 2 is sealed where it passes through the chamber wall by means of an elastic sleeve 6 which has a closed end portion enveloping the shaft 2 and the sleeve 5 internally of the chamber, and is fixed at its open end to the wall 12, e.g. by a seal 13, the free end of the sleeve being secured, e.g. by clamps 28, to the hub 18 of the impeller or agitator 16. The shaft 2, which is hollow, is rotatably supported at its free end by ball bearings 22, Fig. 3, mounted in the hub casing 21. The sleeve 5 consists of a helical spring connected at its free end to a flange 25 on the hub 18. The sleeve may consist of an additional spring of opposite hand. The sleeve 6, which is of rubber or synthetic plastic and could be of convolute form, is a tight fit over the spring 5 and rotates therewith at its free end. A flexible shaft 9 secured against rotation at 10 passes through the shaft 2 and is locked to the impeller 16 by a screw 20. Upon rotation, for each revolution of the shaft 2 the end of the sleeve 5 carrying the impeller makes two revolutions. In a modification, Fig. 5, the torsionally resilient sleeve comprises flexible shafts 5a which are mounted in metal or synthetic plastic disc and ring spacers 29, 30 surrounding a solid shaft 2a and which at their free ends are rotatably secured to a flange on the impeller hub. In a further modification, Fig. 8, the sleeve 6 is sealingly secured to a flexible diaphragm 35 which is bolted to the inner face of the chamber wall 12a. The impeller shaft 1 is secured to the periphery of a disc 33 mounted on the drive shaft 2b and the sleeve 5 is fixed against rotation to a stabilizing linkage 36 pivotably attached at each end to a disc which revolves in unison with the disc 33.
Patent GB-773082-A (GB)
Title: Improvements in or relating to multiple electrotherapy
IPC: A61N1/40
Filed: 1952-12-09
Abstract: 773,082. Electrotherapeutic apparatus. SOPROTEC SOC DE PROMOTION TECHNIQUE. Dec. 9, 1952 [Dec. 11, 1951], No. 31191/52. Class 81(2) In electrotherapeutic apparatus the conversion of the input durrent to a surging form is effected by oscillation generators either themselves supplied by the therapeutic, current or controlled by other means which is supplied by the therapeutic current. In the form shown a mains transformer T1 supplies two valves V1, V2, serving to rectify alternate half-waves. However, whereas the operating conditions of V1 are constant, the grid bias of V2 may be varied down to cut-off by the potential across R8 which is in the anode circuit of V4 and this is also cyclically biased to cut-off by a triode V3, which is made to oscillate by a phase changing network P connected to its grid. With this arrangement the half-waves passed by V2 are cyclically modulated in amplitude and their combination with the output of V1 provides a surging current of the desired form. The rate of surge may be changed by changing the period of oscillation of V3. Instead of valves it is also proposed to use contact rectifiers and also, where valves are used, the necessary oscillation may be maintained by a relay of which the winding is connected in the anode circuit and the break contact is connected in the filament circuit.
Patent GB-360625-A (GB)
Title: Method for making a wall of glass building blocks, tiles or like building elements
IPC: E04C1/42
Filed: 1930-10-17
Abstract: 360,625. Walls ; glass building blocks and tiles. NAAMLOOZE VENNOOTSCHAP GLASFABRIEK LEERDAM VOORHEEN JEEKEL, MIJNSSEN, & CO., Leerdam, Holland. Oct. 17, 1930, No. 31209. Convention date, Oct. 17, 1929. [Classes 20 (iv) and 87 (i).] A wall is made of box-shaped glass blocks and tiles spaced apart by elastic spacing pieces 3 which cover a part only of the horizontal bearing surfaces of the blocks and may be fastened to the blocks or inserted between them while building the wall. The joints are filled in with mortar 12. Blocks as shown in Fig. 1 are hollow underneath and may be assembled to break joint.
Patent GB-1494972-A (GB)
Title: Process of reacting epoxides with phenols carboxylic acids or carboxylic acid anhydrides
IPC: C08G59/68
Filed: 1976-02-16
Abstract: 1494972 Reaction of epoxides with phenols, carboxylic acids and anhydrides DOW CHEMICAL CO 16 Feb 1976 31417/77 Divided out of 1494971 Headings C2C and C2P [Also in Division C3] The reaction between (a) an epoxy group containing compound and (b) a phenol, carboxylic acid, carboxylic anhydride or mixture thereof is catalysed by a phosphorus compound in which each R represents a C 1-20  hydrocarbyl radical and R<SP>1</SP> represents in which R<SP>1</SP> is H or a C 1-20  hydrocarbyl radical; R<SP>2</SP> is H or C 1-20  alkyl, R<SP>3</SP> is H or C 1-20  alkoxycarbonyl; n is 0-20; and A# is an anion. Examples are tri-n-butyl-(1,2-dicarboxyethyl)- phosphonium chloride or hydroxide inner salt; triphenyl - (1,2 - dicarboxyethyl) - phosphonium chloride or bromide and tri-n-butyl-(carboxymethyl)-phosphonium chloride. The catalyst may be used at 0.001-10% by weight based on the combined reactants. In examples phenol is reacted with ethylene oxide in approximately equimolar amounts using catalysts according to the invention. The products contain (by wt.) 85-87% C 6 H 5 OCH 2 CH 2 OH and 7-9% C 6 H 5 O(CH 2 CH 2 O) 2 H. The preparation of the following compounds is disclosed: (a) tri-nbutyl(1,2-dicarboxyethyl)phosphonium hydroxide inner salt by reaction of tri-n-butylphosphine and maleic anhydride; (b) triphenyl(1,2-dicarboxyethyl)phosphonium chloride (I) by reaction of 3-(triphenylphosphoranylidene)dihydro-2,5- furandione and HCl; (c) triphenyl(2-carboxyethyl)phosphonium chloride by heating I at 145‹ C. until evolution of CO 2  ceased; and (d) tri-n-butyl(carboxymethyl)phosphonium chloride by reaction of tributylphosphine and chloroacetic acid.
Patent GB-671341-A (GB)
Title: Improvements in or relating to electronic counters
IPC: H03K23/82
Filed: 1948-12-04
Abstract: 671,341. Electronic counting apparatus. BRITISH TABULATING MACHINE CO., Ltd. Dec. 4, 1948 [Dec. 5, 1947], No. 31449/48. Class 106 (i). In an electronic pulse counter comprising four cascade-connected bi-stable trigger circuits A-D, each having a pair of grid-controlled tubes, in which negative input pulses are applied to the first trigger A, and a negative pulse is transmitted to a higher trigger when the next lower trigger switches from a first to a second stable condition, at least one capacitative feed-back connection from the fourth trigger D effects a switching of a lower trigger once in each cycle of operation. As shown, two feed-back connections 39, 40 from different potential points on the anode resistor 38 of tube D1 causes an extra switch-over of the triggers B and C, thus converting an otherwise binary counter into one which returns to its initial condition after the receipt of ten pulses, an output pulse then appearing on terminal 35. The counter can be placed in the initial condition, in which the dotted tubes conduct, by opening a switch CBS. Modified counters are described in which feedback connections are made from the anode resistor(s) of tube D2 or of both D1 and D2, the initial conditions being different. Duo-decimal counting may be effected by using only one feed-back connecting, e.g. connection 40 in the counter shown.
Patent GB-1155092-A (GB)
Title: Photographic Flash Device
IPC: G03B15/04
Filed: 1966-07-13
Abstract: 1,155,092. Photographic flash socket. EASTMAN KODAK CO. July 13, 1966 [July 14, 1965], No.31469/66. Heading G2A. A photographic flash device comprises a rotatable socket for a photo-flash package containing a plurality of photo-flash lamps (e.g. a flash-cube), and has means for automatically ejecting the package when all the lamps have been used. As shown, the base of the package 16 is provided with an annular contact ring 18 bearing four pairs of contacts which sequentially engage a pair of socket contacts in an annular recess 12, and a depending post 17 having retaining lugs 19 which are engaged by an annular spring 15 in the socket, the post 17 fitting over a socket stabilizing stud 13; as the package is inserted the lugs 19 depress an ejector ring 21, rotatably supported on the stud 13, against the action of a spring 30, and a key portion 22 on ring 21 passes through a cooperating notch 23 in a fixed plate 24 until flat surfaces 24 of the ring 21 engage and are rotated by the legs 28 of a scissors-type spring so that the key 22 is no longer aligned with the notch 23 and the lower edge of spring 28 engages a surface 27 of the ring 21 thus holding the package in the socket. In use the socket and package are rotated stepwise after each lamp is fired by means of a rotatable driving member 25 as described in Specification 1,154,171. During this rotation the key 23 engages and depresses a spring-biased plunger 31 which, in turn engages and further separates the legs 28 of the spring, thus releasing the surface 27 of ring 21 from the legs so that the package is then held in the socket by the key 22 engaging the lower surface of plate 14. The stepwise rotation is continued until, after each lamp has been fired, the key 22 is aligned with the notch 23 in plate 14 so that the package is ejected by the ejector ring 21 under the force of spring 30.
Patent GB-506033-A (GB)
Title: Improvements in or relating to the envelopes and contact bases of electric discharge devices
IPC: H01J5/32
Filed: 1937-11-16
Abstract: 506,033. Caps for discharge tubes. STANDARD TELEPHONES & CABLES; Ltd., and GOODCHILD, F. D. Nov. 16, 1937, No. 31492. [Class 38 (i)] [Also in Group XL] In a thermionic valve having a glass cap A, the copper - clad leading - in wires 2 are individually sealed in recesses 6 in the flat base of the cap. The wires may extend outside the base and be covered with brass pins to act as the terminals, these being seated in the recesses by rubber or fibre bushes; or a separate contact base may be provided, the wires being attached to terminals on the base.
Patent GB-198324-A (GB)
Title: Improvements in two-stroke cycle internal combustion engines
IPC: F02B75/02
Filed: 1922-11-17
Abstract: 198,324. Gregoire, P. J. May 23, 1922, [Convention date]. Valves.-A single sleeve valve 8 is formed with ports 18 controlling admission through ports 15, and with ports 19 which, during the exhaust period, first communicate with discharge passages 16 and afterwards with pump chambers 14, into which the combustion products are withdrawn, being subsequently forced therefrom through ports 20 in the valve and an annular passage 21 in the main piston to the discharge ports 16. The sleeve valve is driven from a crank-pin 3, and the pump piston 12 from a third crank-pin 4.
Patent GB-1386848-A (GB)
Title: Harness for air-men
IPC: B64D17/30
Filed: 1972-07-05
Abstract: 1386848 Parachute and seat harness J MARTIN 3 Oct 1973 [5 July 1972] 31547/ 72 Heading A3V In a combined parachute and seat harness only the shoulder strap terminal lugs 12, 13 are releasably engaged in the connector box 36 which is carried by the negative "G" strap 37. The upper part of the shoulder straps 10, 11 are attached to the parachute riser straps 3, 4 and then pass to a reeling mechanism in the seat. Leg straps 20, 21 pass up between the legs, through rings 34, 35 in the thigh straps 32, 33, and are held by the shoulder straps which are passed through the looped portions 24, 25. The harness is secured to the ejector seat by lugs 19, and 30, 31, and the negative "G" strap, these lugs being released automatically at an appropriate time after ejection.