baber/WOPTO huggingface dataset:
Patent GB-1203643-A (GB)
Title: Improvements in or relating to electrical discharge machining
IPC: B23H7/18
Filed: 1967-09-05
Abstract: 1,203,643. Automatic control systems for electrical discharge machinery apparatus. F. JOS. LAMB CO. Inc. Sept.5, 1967 [Sept.8, 1966], No.40504/67. Heading G3R. [Also in Division B3] In an electrical discharge machining apparatus relative motion between a workpiece and a tool electrode is effected in discrete displacement increments so as to maintain variations in an electrical condition at the discharge gap within predetermined limits, the electrical condition representing the position of the tool electrode relative to the workpiece. Thus, if the size of the gap exceeds an upper limit the electrode is fed towards the workpiece in a series of discrete steps, and is similarly withdrawn from the workpiece if the gap size is less than a lower limit, there being no relative movement in the dead band zone defined by the two limiting values. As shown, a circuit 34 develops on output representative of variations in the average voltage across the discharge gap 13 between a workpiece 10 and a tool electrode 12 and this output is applied to comparators 46 and 48; the comparators 46, 48 also receive respective reference signals defining upper and lower limiting values, these signals being derived from a reference source 54 by way of a circuit 50. If the gap size increases above the upper limiting value the comparator 46 develops an output which, by way of an amplifier 70, energizes a relay 72 the contacts 74 of which close to connect a pulse driven step-motor 22, driving the electrode feed mechanism 18, 24, to a pulse oscillator 76, whereby the electrode 12 is moved towards the workpiece 10 in discrete steps; similarly, relay 84 is energized from the output of comparator 48 when the gap size is less than the lower limiting value, the relay contacts 86 then closing so that motor 22 is energized to retract the electrode from the workpiece. The oscillator 76 may be replaced by two separate oscillators one having a higher frequency than the other, so that the speed of electrode retraction is higher than the speed of electrode feed Fig. 3 (not shown). In another modification the frequency of the oscillator is also automatically controlled in dependence upon a signal from the gap sensing circuit so that the electrode feedrate is made proportional to the gap conditions Fig. 4 (not shown).
Patent GB-1471016-A (GB)
Title: Bakers ovens
IPC: A21B2/00
Filed: 1974-09-17
Abstract: 1471016 Bakers oven SIMON-VICARS Ltd and FLOUR MILLING & BAKING RESEARCH ASSOCIATION 26 Aug 1975 [17 Sept 1974 4 June 1975] 40579/74 and 24160/75 Heading A2A A bakers oven for biscuits comprises at least three separate baking stages with heaters, the centre of which is heated by high frequency dielectric heating, and an endless conveyor belt has the biscuits, comprised of non metallic material having a low dielectric loss factor. Preferably the heating in the first section is by both radiation and convection, whilst in the third section radiation alone is used. Hot gases from the third section may be introduced into the centre section, and extractors for both first and third sections may be controlled by sensors detecting conditions therein. The dielectric heater may comprise electrodes so arranged that the electro magnetic field produces thereby is directed horizontally through the biscuits. The conveyor may be made from PTFE coated woven yarns fabric.
Patent GB-1306637-A (GB)
Title: Holographic aircraft landing aid system
IPC: G03H1/22
Filed: 1971-09-01
Abstract: 1306637 Aircraft landing aids BENDIX CORP 1 Sept 1971 [9 Sept 1970] 40724/71 Heading B7W [Also in Division G2] To assist pilots during approach and landing, models are made of airports to be used and holograms prepared from the models. Before an approach an appropriate concave hologram 67 is mounted on a platform 61 with its concave face facing a translucent screen 37 which is viewed by a pilot through a lens 33. The hologram is illuminated by a beam 71 from a laser 69 and the view obtained from screen 37 is adjusted automatically in response to signals signifying aircraft attitude and position in relation to the airport. A base 29 and a relatively adjustable member 43 are mounted on a reference base 31, the base 29 carrying screen 37 and lens 33, the member 43 having a gimbal mounting 51, 55 for a rotatable platform 57, which in turn carries platform 61 supporting the hologram 67 and is vertically adjustable by mechanism 63. Thus the presentation viewed by the pilot is continuously adjusted in response to roll, pitch, yaw, altitude, airport bearing and slant range signals by servos 53, 41, 39, 65, 59 and 49, respectively.
Patent GB-881586-A (GB)
Title: A new or improved road-vehicle accessory for smokers' use
Inventor: TYRER CHARLES RATCLIFFE
IPC: B60N3/12
Filed: 1958-12-19
Abstract: 881,586. Smokers' ash-trays. HYGIENE PLASTICS Ltd. Dec. 14, 1959 [Dec. 19, 1958], No. 40982/58. Class 130. [Also in Groups XIV and XVII] A receptacle for a drawer-and-shell cigarette carton and matchbox is moulded from a thermoplastic resin and is provided with projections 17, 21 for pushing up the shell portions. A metal ash-tray 28 is inserted in a compartment in front of the projections and the receptacle is secured to a dashboard &c. by suction cups 34.
Patent GB-1126574-A (GB)
Title: Improvements in or relating to apparatus for use in the automatic recognition of characters
IPC: G06V30/10
Filed: 1965-09-29
Abstract: 1,126,574. Character recognition. SIEMENS A.G. 29 Sept., 1965 [29 Sept., 1964], No. 41325/65. Heading G4R. Character recognition apparatus comprises means to determine elementary areas delimiting a boundary of a window containing the characters, and means to infer from this determination the positions of other elementary areas delimiting the boundary. Referring to Fig. 2, signal elements obtained by columnwise scanning of the window and its borders are " one " if originating from a character or the window border and " zero " if from a non-character point within the window, and are passed from line (n + 1) via two onecolumn-delay registers vR, R in series to a gate Gk<SP>*</SP>. A unit FY fed by the outputs of these registers enables one input of a gate GYF<SP>*</SP> during the window portion of each column which crosses the window but not any character. The gate GYP<SP>*</SP> is blocked at a second input during the first and last elements of the window portion via an OR-gate OG fed from taps on delay registers R, nR through which the signal elements pass. The gate GYP<SP>*</SP> thus provides a truncated window signal which is stored in a recirculating register YF<SP>*</SP> (until the next column crossing the window but not a character) and used to enable one input to gate Gk*. A blocking input of gate Gk<SP>*</SP> is energized following detection of a column entirely in the trailing window border (by a unit YFE) and due to the two-column delay in registers vR, R this replaces the immediately preceding column by all " zeroes " at the output of gate Gk<SP>*</SP>, which leads to recognition circuitry. Fig. 3 shows an alternative arrangement for producing the truncated window signal using a recirculating delay register YF storing the untruncated window signal and feeding a gate Gyf<SP>*</SP> from one tap thereon. The gate Gyf<SP>*</SP> is blocked at another input to perform the truncation by blocking gates controlled from taps one element earlier and later. Fig. 3 also shows schematically a preceding arrangement comprising a delay register RR to hold signal elements for a complete character and means b to count the columns crossing the window, insert the count minus one into a (further) counter when the first column crossing the window but not a character is reached, and then increment the counter by one for each subsequent column until its capacity is reached when a gate in the output of the register RR is enabled. Thus the signal elements in the first column to cross the window are not passed. The truncation of the window signals and the deletion of the first and last columns in the window, avoid parts of the window border being taken as parts of characters even if the characters run into the borders and the boundaries between window and borders (as detected) are skew or uneven.
Patent GB-936737-A (GB)
Title: Coloured viscose rayon
Inventor: MITCHELL JOHN
IPC: D01F2/10
Filed: 1960-12-02
Abstract: Coloured viscose rayon is made by spinning viscose solution containing fine particles of one or more copper polybromochlorophthalocyanines, wherein the total number of halogen atoms per molecule is not less than 15, and at least 6 of the halogen atoms are bromine atoms.  Preferably at least 90% of the fine particles of copper polybromochlorophthalocyanine are less than 3 microns, and desirably less than 1 micron, in diameter.  An aqueous dispersion of the pigment to which a wetting agent is added may be colloid-milled to the required particle size, and the resulting paste separated, diluted with water and added to the viscose while agitating, the viscose being then de-aerated and spun in conventional manner.  Specified wetting agents include disodium dinaphthyl methane-b -disulphonate, sodium oleyl sulphate, sodium oleyl p-anisidine sulphonate, lignin sulphonic acids, octyl phenol-ethylene oxide condensate, and cetyl alcohol-ethylene oxide condensate. Yellowish-green shades are obtained, becoming more yellow as the number of bromine atoms in the copper polybromochlorophthalocyanine is increased. Specification 925,266 is referred to.
Patent GB-946503-A (GB)
Title: Arrangement for a combined insulation-and short-circuit testing of a multi-channel pulse communication system
IPC: G01R31/04
Filed: 1961-11-21
Abstract: 946,503. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. Nov. 21, 1961 [Nov. 22, 1960], No. 41674/61. Heading H4K. In an arrangement for testing for faults in a path of a pulse multiplex system a charged condenser C<SP>1</SP>, Fig. 3, is connected by a pulsecontrolled gate K to the transmission path for a time #, the arrangement forming an oscillatory circuit of period equal to an integral sub-multiple of r means being provided to detect loss of charge on the condenser C<SP>1</SP>. The arrangement applied to an automatic exchange system such as is shown in Fig. 2 in which connection between subscribers is established by interchange of energy on condensers C via highways A ... D through the momentary closure of " contacts " K A , K AB  ... K D . The testing device is connected at point A, capacity Ct representing the combined highway capacities C A , C B  ... which are accurately specified as described in Specification 836,756. The contacts K AB  are closed in synchronism with gate K. If no faults exist then the charge on condenser C<SP>1</SP> originally provided from battery E returns to its original value at the end of time #, but in the case of a fault the effective value of Ct changes and the charge on C<SP>1</SP> at the end of time # is less and has to be renewed from battery E via meter I which thus gives a non- zero reading. The lost charge which becomes distributed on the capacities of the highways is discharged in the usual way by gates (not shown) opened between channel pulses. To determine the location of the fault capacitor C<SP>1</SP> is adjustable to enable the same resonance frequency to be obtained when capacities C, C D  ... are omitted from the path. Contacts K D , K CD  ... are then successively prevented from operating, C<SP>1</SP> being appropriately adjusted, and when eventually no reading is obtained it is known that the fault lies beyond the contact which has not operated. In a further embodiment, Fig. 4 (not shown), use is made of the fact that a leakage makes the circuit effectively resistive, this resitance being used to unbalance an A.C. bridge, the A.C. frequency being low compared with the pulse repetition frequency.
Patent GB-1365385-A (GB)
Title: Stirring device for agitating a submerged bed of sand
IPC: F04D29/18
Filed: 1971-09-08
Abstract: 1365385 Stirrers T ARAOKA 8 Sept 1971 41869/71 Heading B1C A stirrer has a frusto-conical body with circumferentially projecting vanes which are of uniform radial width from end to end and which along part at least of their length are inclined relative to the stirrer axis so that when the stirrer is rotated in one direction a downward whirlpool current is created. The vanes may be straight or curved and may have one or more change of inclination. The stirrer may be used for stirring up sand from the bottom of a body of water, in combination with a slurry pump.
Patent GB-1128361-A (GB)
Title: A through-flow measuring cell for photometers
Inventor: HRDINA JIRI
IPC: G01N30/74
Filed: 1965-10-04
Abstract: 1,128,361. Photo-meters. CESKOSLOVENSKA AKADEMIE VED. Oct.4, 1965 [Oct. 8, 1964], No.41943/65. Heading G1P. A through flow measuring cell 30, Fig. 7, for photo-meters comprising a sample space bounded on opposite sides by transparent walls and having a liquid inlet 17 and outlet, has the inlet 17 terminating in a conduit 36 which has a crosssection substantially smaller than that of the cell and inlet so that turbulence is produced in the cell. As shown the outlet is at the top of a tapered vessel 30, the lower end being closed by a stopper 33 of silicone rubber or polytetrafluoroethylene having an obolique channel 34 connecting a needle inlet tube 17 to an annular space 35 communicating through one or more narrow obliquely cut recesses 36 with the sample space. In a modification Figs. 8a and 8b (not shown) the stopper is in the form of an upper portion (39) secured into a lower portion (41) receiving the needle tube (17), a sealing collar (43) being pressed against the lower portion (41) by a nut and tube (44). In a further form, Figs. 9 and 10 (not shown) the lower portion (41) is screwed into the upper portion (39). To provide additional mixing of the contents of the cell a tube 38, Fig. 11, closed at its lower end as previously described is proved with a piston 48 actuated by a cam 53 and follower 52 so that on the upward stroke liquid is drawn into the sample space and well mixed whilst in the downward strike the liquid passes through oblique recesses in the periphery of the piston portion 47 into an annular space 57 so as to be ejected finally into an overflow vessel 55. In further forms of cell the inlet is tangentially arranged in the wall of the cell, Figs. 6a - 6c (not shown) or in the lower stopper Fig. 5a (not shown), the cell is formed as a recess in a block closed by transparent end walls, Fig. 4a and 4b (not shown) or as a cylindrical recess in a transparent block closed by a lower plug, Fig. 1 (not shown).
Patent GB-1197298-A (GB)
Title: A Post for a Fence, a Beacon or Like Support
Inventor: RUIGROK FRANCISCUS BERNARDUS M
IPC: E04H17/20
Filed: 1967-09-18
Abstract: 1,197,298. Concrete posts. F. B. M. RUIGROK. 18 Sept., 1967 [4 Aug., 1967], No. 42398/67. Heading El B. A pre-stressed reinforced concrete post I has cap 4 of stressed rods 2 engaging holes 5 in projection 15 of an aluminium or synthetic resin cap 3, which has a central screw threaded hole 6 corresponding to a hole in the base of an exchangeable part 10 through which a nut 8 passes. The exchangeable part 10 may receive a fence rail 9 or have a projection for securing barbed wire or a traffic indicator.
Patent GB-880313-A (GB)
Title: Ferrous chelates of amino acids
Filed: 1959-12-15
Abstract: The invention comprises ferrous chelates of the general formula <FORM:0880313/IV (b)/1> (wherein R represents a hydrogen atom or an alkyl group, R1 an alkylidene or aralkylidene group and X an oxygen or sulphur atom), and the preparation thereof by reacting an alkali metal or ammonium salt of a 2-amino-3-hydroxy-or-3-mercapto-alkanoic acid with a water-soluble ferrous salt and simultaneously or subsequently mixing the resulting ferrous aminoalkanoate with an aliphatic or aromatic aldehyde.  The products are useful for treating iron-deficiency anaemias.
Patent GB-960607-A (GB)
Title: Improvements in or relating to electrostatic spraying apparatus
IPC: B05B5/03
Filed: 1960-12-13
Abstract: 960,607. Nozzles. ESCHER WYSS G.m.b.H. Dec. 13, 1960 [Dec. 18, 1959], No. 42905/60. Heading B2F. Liquid mist from an atomiser is fed through a tube 4 to a housing 1, and on flowing from an elongated outlet 8 of a nozzle 2 is electrically charged by a high voltage electrode 3 and directed on to an object maintained at an opposite potential. Condensate is returned to the atomiser through the tube 4. The electrode with spaced wires 9 is broom-shaped.
Patent GB-1032958-A (GB)
Title: Improvements in or relating to sheet feeding devices
IPC: B65H3/06
Filed: 1962-12-28
Abstract: 1,032,958. Feeding sheets. RANK XEROX Ltd. Dec. 28, 1962 [Dec. 28, 1961], No. 43032/65. Divided out of 1,032,9.51. Heading B6B. Sheets are separated from the top of a stack by spaced friction rollers 61, and double separation is prevented by a member comprising a leaf-spring 221 secured at its rear end to a support 222, mounted on a side guide for the stack and inclined towards the base of the stack, the front end of the leaf spring having a narrow portion 217, Figs. 5 and 6 (not shown), bearing on the top corner of the stack, and a depending portion 216 which covers the front edge of the stack at one corner. Thus, during the initial sheet separating stage, the top sheets are retained at their corners by the portion 216, and the top sheet is then flipped past that portion. The sheet stack is held in a tray 60, slidable into operative position, comprising a base 204 provided with a hinged rear coverplate 205, a fixed side guide 206, Fig. 2 (not shown), and a side guide 207 which is laterally adjustable by means of a cam lever 211 and leaf-spring 213. Each side guide has support 222 for a leaf-spring 221 secured thereto, so that both front corners of the sheet stack are restrained. Stack registration.-A pivotally mounted gate 231 on the front of the tray 60 is normally biased into vertical position by torsion springs 233, and a finger on the gate is engaged, when the tray is moved into operative position, by a fixed cam 234 to swing the gate into a horizontal position. A finger 219 secured to each leaf-spring 221 is engaged and moved upwardly by the gate 231 when the tray 60 is not in operative position, so that the springs are raised during stack replenishment; the springs 221 are allowed to fall when the tray is in feeding position, and the front edges of the sheets are registered by the depending portions 216 of the springs. With the tray 60 in operative position, the rear end of the sheet stack is engaged by a stop 242 which is secured to a disc 237 which is rotatably mounted on the base 204 of the tray. Sheet forwarders.-The invention is described as applied to xerographic reproducing apparatus (Fig. 1, not shown), and sheets separated from the stack by the rollers 61 pass through a guide 67 to grippers 63 on a conveyer 62, as described in Specification 1,032,951.
Patent GB-1481616-A (GB)
Title: Tachometric and angular programming system for a rotary device
IPC: G06F7/68
Filed: 1974-10-04
Abstract: 1481616 Frequency multipliers SOC DES PROCEDES MODERNES D'INJECTION SOPROMI 4 Oct 1974 [17 Oct 1973] 43175/74 Heading G4D [Also in Division H3] Means for generating a train of pulses at 7À2 of frequency K times that of incoming tachometer pulses at 19À1 comprises a divider 2, synchronized with the tachometer pulses for dividing the frequency of pulses from clock 1 by K, a counter 4 for counting the divided clock pulses occurring between consecutive tachometer pulses, a buffer register 5 and a second counter 6 arranged to divide the clock pulses from 1 to give the desired output at 7À2. Counter 6 is continuously incremented by the clock pulses and may be reset to zero whenever it reaches the value in register 5, or the complement of the value in the register 5 may be loaded into counter 6 whenever it overflows. To save capacity in counter 4 it may be arranged, Fig. 4 (not shown), that its contents, and the frequency of the clock pulses, are divided by 2 whenever counter 4 overflows, the counter 6 being incremented at the final clock frequency used in the previous conversion cycle. The frequency of the output pulses may depend on only the 8 most significant bits of a 12 bit count, Fig. 8 (not shown), the 4 least significant bits being used to increment the period of certain output pulses by one clock pulse in such a way that the average frequency is accurate to 12 bits.
Patent GB-1373047-A (GB)
Title: Composite pigments
IPC: C09C1/08
Filed: 1972-09-19
Abstract: 1373047 Coated silicate pigments HAMMOND LEAD PRODUCTS Inc 19 Sept 1972 [20 Sept 1971 31 Aug 1972] 43289/72 Heading C1A [Also in Divisions C3 and C4] A composite pigment comprises a finelydivided silicate coated with a hydrated, amorphous metal phosphate, phosphite, borate, borophosphate, borophosphite or chromate or mixture thereof. Specified base pigments are the silicate minerals wollastonite, talc, mica, nepheline and feldspar. The coating, which may constitute 4-65 wt. per cent of the composite, may be a salt of calcium, magnesium, strontium, barium, lead or zinc. The composite pigment may be made by (1) introducing into an aqueous suspension of the silicate, a metal compound capable of forming the coating pigment (e.g. a basic salt); (2) adding at least one reagent to form the coating pigment (e.g. phosphoric, boric or phosphorous acid; (3) attriting the suspension of silicate and coating pigment. Preparations are described (see Division C1). Examples 11-18 describe pigments of calcium phosphitewollastonite, barium borate-wollastonite, zinc phosphate-wollastonite, strontium chromatenepheline, lead borate-wollastonite, magnesium borophosphate/zinc borophosphate - feldspar, barium phosphate/zinc phosphate-wollastonite/ nepheline, and calcium borophosphite(lead borophosphite-wollastonite, nepheline. In Examples 6-10, calcium salt-coated wollastonite, mica or talc pigments are incorporated into paints based on linseed oil and/or soya alkyl solution and comprising solvents, metallic salt driers, and additional pigments i.e. iron oxide, zinc oxide, titanium dioxide, talc, silica, mica.
Patent GB-1357989-A (GB)
Title: Method for producing hydrophilic layers on the surface of non- hydrophilic acrylic resins
IPC: C08J7/12
Filed: 1972-09-20
Abstract: 1357989 Surface hydrophilizing acrylic polymer articles CESKOSLOVENSKA AKADEMIE VED 20 Sept 1972 [8 Oct 1971] 43581/72 Heading C3P Hydrophilic layers at the surface of articles made from non-hydrophilic acrylic polymers are formed by treating the article with a mixture of a strong acid (an acid with an acidity no lower than that corresponding to the Hammett Function Ho = - 8) and an organic compound containing at least two primary or secondary alcohol groups. Acids specified are sulphuric, a sulphonic acid, an alkyl sulphuric acid, BF 3 / alcohol complexes and perchloric acid. Hydroxy compounds specified are ethylene glycol, trans- 2 - butene - 1,4 - diol, p - xylylene glycol, glycerol, pentaerythritol, mannitol, diethylene glycol, triethylene glycol, enneaheptitol, glucolactone, mucic acid, trimethylol - α- picoline and saccharose. The alcohol may be released in situ in the polymer surface by release from its corresponding ester by the acid used in the treatment, the ester having been initially used to swell the polymer surface. In the examples (1) a polybutyl methacrylate tube (cross-linked with ethylene glycol dimethacrylate) was treated with H 2 SO 4 /ethylene glycol mixture; (2) a polymethyl methacrylate body of a blood pump was swollen with triacetin and treated with H 2 SO 4  (producing glycerol from the triacetin); (3) a denture made from a non- hydrophilic acrylic resin was treated with glycerol/H 2 SO 4  mixture (the surfaces not to be softened were coated with polyisobutylene), and (4) polyacrylonitrile plates were treated with ethylene glycol/sulphuric acid mixture.