baber/WOPTO huggingface dataset:
Patent GB-1504742-A (GB)
Title: Electro-erosion
IPC: B23H7/18
Filed: 1975-02-11
Abstract: 1504742 Electro-erosion CAREL FOUCHE LANGUEPIN 11 Feb 1975 [21 Feb 1974] 5835/75 Heading B3V [Also in Division G3] In a process of electro-erosion, the electrode feed rate is measured and regulated to an optimum value by adjusting the power delivered to the working gap by a supply generator. The gap voltage is also regulated by controlling the electrode feed motor in dependence upon a comparison of the actual gap voltage with a reference voltage. As shown in Fig. 1, a motor 12 drives an electrode 5 machining a workpiece 6. A generator 10 supplies a working voltage. The gap voltage is sensed by conductors 13, 14 and compared in an amplifier 15 with a reference voltage from a potentiometer 16. A resultant error signal 18 is fed to the motor 12 which operates to maintain the gap voltage and width constant. The error signal 18 is also fed to an integrator 19, the output voltage of which represents the feed rate of the electrode 12. A desired feed rate is represented by the setting of a potentiometer 20. The voltages from the integrator 19 and the potentiometer 20 are compared in a circuit 21 supplying a control signal to a servomotor 22 which adjusts the power supplied by the generator 10, thereby controlling the rate of erosion of the workpiece 6 and regulating the electrode feed rate. In a modification, Fig. 2, the error signal 18 drives both the electrode motor 12 and an auxiliary motor 26 connected to a tachometric dynamo 27, the voltage from which represents the electrode feed rate and is supplied directly to the comparator circuit 21. Alternatively, an indication of the feed rate may be derived by differentiating the error signal and by photoelectrically counting pulses produced by a disc, the pulses being fed to a bidirectional counter, Fig. 4 (not shown).
Patent GB-750648-A (GB)
Title: Process for the dyeing of wool with complex heavy metal compounds of dyestuffs
IPC: D06P3/20
Filed: 1954-03-01
Abstract: Wool, if desired mixed with other fibres such as nylon, is dyed with complex heavy metal compounds, e.g. chromium or cobalt compounds, of monoazo or azomethine dyestuffs, of the type two dyestuff moleclues to one heavy metal atom of atomic number 23-28, which contain no acid water-solubilizing groups, the dyeing being begun in a hot dye liquor at a pH of at least 7.5 and being performed in the heat by either circulating the liquor or moving the goods while lowering the pH value.  Lowering of the pH value is attained by the addition to the dye liquor of buffer mixtures of ammonium salts of organic or inorganic acids and ammonia, or of acid-liberating substances such as ethyl lactate, diethyl tartrate, or salts of sulpho-acetic acid alkyl esters, sulphosuccinic acid dialkyl esters, phthalic acid monoesters or low molecular fatty alcohol sulphonates.  The dyestuffs may contain sulphamide groups substituted or not on the nitrogen atom, acylamino group derived from low fatty acids or alkyl sulphonyl groups.  Examples are given.
Patent GB-525567-A (GB)
Title: Improvements in or relating to shoe-bottom pressing apparatus
IPC: A43D25/06
Filed: 1939-02-23
Abstract: 525,567. Sole-laying &c. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Feb. 23, 1939, No. 5986. [Class 17 (i)] Relates to means for adjusting the contour of the shoe - engaging surface of a shoe-bottom pressing pad. A base 10 bolted to the machine frame supports abutments 64, 66 each comprising a spindle 74 carrying rollers 76 supporting plates 26, 36 supporting the front and rear parts of the pad, respectively. The abutments are screwthreaded to engage a right, and left hand screw 78, having a hand nut 84 prevented from longitudinal movement, by which the screw and abutments can be moved longitudinally of the screw. A lock nut 90 enables the screw to be turned to move the abutments simultaneously towards or from each other. The plates 26, 36 also carry lugs 22, 32 supported by links 30, 20, the joints of the lugs with the link 30 being provided with adjustable springs to maintain them by friction in set angular positions. The links 20 are pivoted to lugs 16 on the base 10. Between the plates and the fore-part of the pad are insertions 38 curved transversely of the pad to allow rock of the fore-part; and at the shank and heel an insertion 52 bulged to press the sides of the shank firmly against the shoe upper. Straps 46, 56 secure the pad. Specification 408,953 is referred to.
Patent GB-309858-A (GB)
IPC: B23B31/20
Filed: 1929-02-23
Abstract: 309,858. Mannesmannr÷hren-Werke. April 16, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Chucks. - A selfcentring chuck comprises a body a having an opening bevelled at a<1> to cause a split sleeve c to grip the work B when it is drawn inwards by cams e<1> on a shaft e journaled in the body. The cams act on a disc d adjustably secured to the sleeve c to allow variations in the size of the work to be compensated for. A spring f releases the sleeve and a conical shoulder h on the interior of the sleeve serves to centre the work when it is inserted.
Patent GB-275505-A (GB)
Title: Means for threading screw blanks utilizing parallel tools
IPC: B23G1/06
Filed: 1927-03-03
Abstract: 275,505. Aktiebolaget Priorverken. Oct. 6, 1926, [Convention date]. Turning wood-screws; steady rests.-In a machine for threading wood-screws, of the kind described in Specification 227,172. wherein a number of parallel cutting tools follow one another into and out of working position and are controlled by guides which determine their respective paths, the tool-holders 1 carrying the tools 2 can oscillate independently about a shaft 3 and the arms 1<1> of the holders are longer than the arms 1<11>, so that inaccuracies in the stationary cam 8 along which the holders slide, and which controls the cutting position of the tools, are reduced in the work. The holders are kept in engagement with the cam 8 by springs 7 and are traversed longitudinally of the work 6 by a cam 4 and a guide 5 in the shaft 3. A cam 10, Fig. 1, maintains a rest 9 in contact with the work.
Patent GB-757436-A (GB)
Title: Improvements in push-bar drawing frames
Inventor: MATTHEW JOHN ALEXANDER
IPC: D01H5/10
Filed: 1954-03-02
Abstract: 757,436. Gill drawing frames; indicating arrangements. LINEN INDUSTRY RESEARCH ASSOCIATION. March 1, 1955 [March 2, 1954], No. 6030/54. Classes 120 (1) and 120 (3). In order to compensate for wear on the edges of the slide or cam path of a push-bar drawing frame, a portion of each edge is formed by a plate that is adjustable to vary the clearance between the gill bars and the slide or cam path. In an embodiment where an additional plate 4 is mounted on an outer slide member 2, two guide pieces 13 are secured to the member 2 between which the plate 4 may be slidably ad-  justed. A scale may be inscribed on one of the pieces 13 to indicate the position of the plate 4. Instead of using guide pieces, plates may be adjustably mounted by passing bolts through parallel slots in them. Alternatively, additional plates may be dispensed with and the parts forming the outer edge of the slide or cam path may themselves be adjustable. Such a part 30, Fig. 5 is shown mounted on eccentrically-bored washers or sleeves 36 for movement during adjustment in rectangular recesses 35. In a double-crank machine, three adjustable members may be necessary on each side of the machine and these may be mounted on a single bolt carrying three eccentrically-bored washers or sleeves.
Patent GB-512064-A (GB)
Title: Improvements relating to the propulsion of aircraft
IPC: B64D39/00
Filed: 1938-02-25
Abstract: 512,064. Propelling aircraft. WHITTLE, F. Feb. 25, 1938, No. 6037. [Class 4] In an aircraft with a combustion engine consuming compressed air, the air to be compressed is obtained from one or more regions of the surface of the aircraft where the total head of relative airflow is reduced below that of the undisturbed relative airflow bv skin friction or its effects, and the exhaust from the engine is directed rearwardly and emitted as a propulsive jet. As shown, an engine 11. of the (form described in Specification 456,980, is housed in the rear of the fuselage and exhausts rearwardly through a duct 12 and a nozzle 9. The engine compartment is separated from the pilot's compartment by an airtight partition 10 and 'is supplied with air through a plurality of scoops 14 arranged around the fuselage at or to the rear of the region of maximum girth thereof. The fuselage is recessed at 15 in front of each scoop and guide surfaces 16 which as shown are in the form of a ring are provided inside the scoops so that the air passageways are divergent rearwardly. The scoops may be replaced by a single scoop extending partly or wholly around the fuselage or may be dispensed with and air admitted through a patch of porous skin. The engine compartment may be supplied with air through ducts in the wings 2. The undersurface 13 of the fuselage and the empennage surfaces may be of heat-resisting material or may be protected by an insulating material. The pilot's compartment, which may be made airtight, has a transparent covering 5 and a forward and downwardly facing window 6. The landing gear comprises main. wheels 3 and a nose wheel 4. The engine may be arranged in a nacelle or wing and a plurality of engines may be provided. Specifications 456,976 and 471,368, [Group XXVI], also are referred to. '
Patent GB-1130828-A (GB)
Title: Method of making steel
Inventor: VOINOV SEMEN GEORGIEVICH
IPC: C21C7/00
Filed: 1966-02-11
Abstract: 1,130,828. Refining steel. TSENTRALNY NAUCHNO-ISSLEDOVATELSKY INSTITUT CHERNOI METALLURGII IM. I. P. BARDINA. Feb.11, 1966, No.6059/66. Heading C7D. Basic open hearth or electric arc furnace steel, such as produced on melting a charge of steel scrap, pig iron and coke and oxidizing the bath by blowing, is refined to reduce oxide inclusions by tapping the heat into a ladle containing basic synthetic slag, e. g. comprising 38 to 45% Al 2  O 3 , 50 to 55% CaO, up to 5% SiO 2  up to 6% MgO and up to 1% FeO heated to 1700‹ C, and adding oxidizers, such as iron and /or manganese ore in the amount 0.05 to 0À5% by weight of the heat. Prior to tapping, Fe-Cr for alloying and iron ore may be added to the oxidized heat. Fe-Si and Fe-Mn may be added with the oxidizers. After oxidizing refining using the basic slag, the melt may be deoxidized with Al.
Patent GB-867151-A (GB)
Title: Improvements in or relating to rotary distributors for sewage or other liquids
Inventor: HARTLEY AUGUSTINE JOSEPH
IPC: C02F3/04
Filed: 1959-02-23
Abstract: 867,151. Rotary distributers. HARTLEYS (STOKE-ON-TRENT) Ltd. Jan. 29, 1960 [Feb. 23, 1959], No. 6078/59. Addition to 823,973. Class 69 (3). The rotary distributer of the parent Specification has the trailing traction wheel or roller 36 carried by a rigid arm 31 on a power unit which itself is pivotally mounted on the end of a distributer arm 10, the power unit comprising a geared electric motor 24 secured to a bearing box 23 carrying intergeared output and secondary shafts 26, 29 which drive the traction wheel 36 by chain and sprocket gearing 35, 30, 34. As shown, the bearing box 23 is pivoted to a hinge pin 21 on a platform 18 which is adjustable to allow radial setting of the wheel and is carried by an arm 15 mounted for vertical adjustment on bars 11 upstanding from the distributer 10. On withdrawing a cover plate 39, gears 27, 28 can be changed to alter the gear ratio. According to the Provisional Specification, a sliding weight may be fitted to regulate the weight on the traction wheel.
Patent GB-1456301-A (GB)
Title: Printers
IPC: B41J19/20
Filed: 1974-02-11
Abstract: 1456301 Selective printing COPAL CO Ltd 11 Feb 1974 [12 Feb 1973] 6092/74 Heading B6F [Also in Division G4] A printer comprises a printhead 18 reciprocally movable once for each line of print by mechanism 1-5, 7-16. Printhead 18 is mounted on a carriage 17 movable along bars 15, 16 by a cord 13 which is secured to a projection 17a. Cord 13 extends between fixed rollers 12a, 12b and is moved by a further roller 11 which is in turn moved by an arm 9 co-operating with a groove cam 8 driven by a motor 1 via gears 2-5. Bars 15, 16 are connected by a lever 14 which is movable in the direction shown so as to tilt the printhead towards the record medium during printing. A coil 6 co-operates with a toothed wheel 4 to generate print timing pulses for the printer control circuit (see Division G4).
Patent GB-964485-A (GB)
Title: A process for the production of modified polyesters from di-(glycol)-terephthalates
IPC: C08G63/64
Filed: 1963-02-14
Abstract: Poly(glycol terephthalates) having improved dye-absorbing properties, thermal stabilities and dimensional stabilities are made by polycondensing a di-(glycol)iterephthalate in the presence of up to 15% by weight of a polycarbonate of bisphenol-A, preferably of molecular weight 50,000-70,000.
Patent GB-923409-A (GB)
Title: Process for producing selectively doped semiconductor dendritic crystals
IPC: H01L21/00
Filed: 1961-02-20
Abstract: In pulling a dendritic crystal of a semiconductor material from a melt by the method of Specification 889,058 the melt comprises both n- and p-type dopants having different segregation constants with respect to the semi-conductor <PICT:0923409/III/1> <PICT:0923409/III/2> <PICT:0923409/III/3> <PICT:0923409/III/4> material so as to produce alternate elongated layers of n- and p-type material, the outermost layers being joined by a transverse elongated core.  Using a seed having one interior twin plane or a single group of interior twin planes, the dendritic crystal may have the cross-sectional structure shown in Figs. 7, 8, or 19. More than one intermediate layer of the same conductivity type as the outermost layers and core may be produced using a seed having more than one group of interior twin planes.  Semi-conductors specified are germanium, silicon, zinc selenide and sulphide, and compounds of aluminium, gallium, or indium with antimony, arsenic, or phosphorus. Tin may be present to aid solution of the dopant. A melt of germanium when doped with antimony and boron produces a p-type core containing boron and when doped with phosphorus and indium produces an n-type core containing phosphorus.  The concentration of each dopant may be 1013-1020 atoms per c.c. of melt.  Using a seed having three interior twin planes as illustrated in Fig. 2, the ratio of the spacings between the planes (A/B) may be 1-18.  The spacings may be 1 2/3 and 5 microns respectively.  The seed may be initially contacted with a melt slightly above its m.p. to effect wetting.  The melt may be supercooled 1 DEG -40 DEG C. during pulling.  Pulling may be at a speed of 0,2-20 in./min. in a protective atmosphere or vacuum. Examples are given.  Specification 913,674 also is referred to.
Patent GB-525645-A (GB)
Title: Multiple burner arrangement
IPC: F27B7/34
Filed: 1939-02-24
Abstract: 525,645. Spray burners; liquid fuel supply. SEIL, G. E. Feb. 24, 1939, No. 6193. Convention date, Feb. 28, 1938. [Class 75 (i)] In a multiple burner arrangement for furnaces and kilns, liquid fuel is supplied to the burners from a single pump 29 driven from a constant speed motor 30 through variable gear 31. Liquid fuel passes from the pump 29 through a pipe 32 to burner nozzles 19, Figs. 3 and 8, comprising a central fuel passage 21 and an annular passage 23 to which compressed air is supplied by a pump 34 and pipe 18. The air passes from the passage 23 through an annular orifice 24 the size of which may be determined apparatus driven by a motor 37 and conduits 26, by a removable bush 25. The nozzle is arranged within the tube 13 to which air is supplied by 27. Specifications 24059/13, [Class 75 (i)], and 525,607, [Group XII], are referred to.
Patent GB-565128-A (GB)
Title: Improvements in or relating to racks and the like
IPC: A47B87/02
Filed: 1943-04-19
Abstract: 565,128. Rack stands. KLINGE, W. H. E. April 19, 1943, No. 6210. [Class 52 (iii)] A rack which may be used for holding trays or crates is built up by lengths of tubing 7 fitting over spigots 3, 8, 9 projecting from blocks 2, 10, 15 to which horizontal members 13, 14 are attached. Nuts 6 secure the lowermost spigots to the 'floor 5. The horizontal members may consist of angle irons on to which the trays or crates may be slid.
Patent GB-1210903-A (GB)
Title: Moisture and snow detector
IPC: G01W1/14
Filed: 1969-02-05
Abstract: 1,210,903. Ice detectors. VAPOR CORP. Feb. 5, 1969, No. 6267/69. Heading G1N. Apparatus for detecting the presence of ice or snow comprises an aluminium conical member 26 Fig. 2, whose outer surface is anodized, with a lead 50 contacting the aluminium body and lead 47 located on the anodized coating, whereby the normally insulating coating becomes conductive when wet and reduces the resistance between leads 47, 50 to operate an alarm. The centre of member 26 contains a heater 52 which controlled by a thermoswitch 58 to be energized at 34‹ F. to melt any ice or snow.
Patent GB-765426-A (GB)
Title: Gas fires
Inventor: EVANS URIEN CERI LLOYD
IPC: F24C3/04
Filed: 1955-03-03
Abstract: 765,426. Gas fires. RADIATION, Ltd. March 3, 1955, No. 6277/55. Class 126 [Also in Group XIII] In a gas fire, the lower side of a flue g overlaps the upper ends of the radiants c at the front so as to protect the rising stream of combustion gases from the direct action of the chimney pull and divert part of the combustion gases stream towards the air stream entering the flue from the room. The forward end of the lower side of the flue is of aerofoil section and the upper or both sides of the flue are integral' with the body part of the gas fire. A passage f for heating air for room warming may be provided.
Patent GB-512472-A (GB)
Title: Improvements in cylinder honing machines
IPC: B24B33/06
Filed: 1938-03-01
Abstract: 512,472. Honing machines. BURGESS, A. F. (Barnes Drill Co.). March 1, 1938, No. 6432. [Class 60] [Also in Group XXIX] A machine for honing the internal surface of a cylinder having a closed end, or any obstruction therein preventing movement of the honing-tool entirely therethrough, is provided with means for giving the tool a dwell at the obstructed end of the bore to ensure equal grinding of the whole surface. The machine comprises a base 10 carrying a work-support 13 and a column 12 carrying a tool head 14 in which is journalled a spindle 17 on which is mounted a hone 15. The spindle is rotated by a motor 22 through gearing including a gear 19 and is connected, for axial reciprocation, to a piston 27 movable in a cylinder 25 to which pressure fluid is supplied by pipes 28, 29, under control of a reversing-valve 35, from a pump 33; exhaust fluid passes to a reservoir 32 through a pipe 39. The valve 35 is moved axially by fluid applied to its ends 47, 48 through pipes 42, 43 under control of a valve 44, which is moved by axial movement of a stop bar 51, carrying fixed stops 52, 54 and a skip-stop 53, by means of an arm 55 connected to the tool spindle; the stops 53, 54 control the working reciprocations of the piston 27, and on rotation of the bar 51, the stop 52 controls the upper limit of movement of the tool out of the work 57. The dwell of the tool at the lower, obstructed, end of the work is produced by slowing the movement of the valve 35 when the lower stop 54 is engaged to reverse the direction of movement of the tool, and for this purpose the pipe 43 has a one-way valve 63 therein allowing free ingress of fluid to the part 48, the valve being by-passed by a restricted-flow valve 65 allowing of slow exhaust from the part 48; the valve 65 has a rotatably adjustable hollow member 66 therein provided with radial perforations of different sizes, permitting various degrees of delay in the movement of the valve 35. The downward movement of the tool in the bore of the work is definitely limited by abutments 58, which are engaged by adjusable screws 62 carried by a cross-arm 59 on the spindle; the arm also carrying a housing 59a in which is rotatably supported, by ball bearings 17b, the end of the spindle 17. In order to slow down the movement of the tool as it approaches its lowest point, the stop 54 is arranged to be engaged by the arm 55 before the screws 62 engage the abutments 58, the valve 65 then slowing down the movement of the tool.
Patent GB-468131-A (GB)
Title: Improvements in or relating to motor vehicle brake cylinder and the like pistons
IPC: B60R17/00
Filed: 1937-03-05
Abstract: 468,131. Pistons. BOSCH AKT.-GES., R. March 5, 1937, No. 6519. Convention date, March 7, 1936. [Class 122 (i)] In a piston for brake cylinders &c. in which lubricant is supplied radially outwardly thereof, a thin disc k is mounted on the end of the piston to define a lubricant chamber and is of less diameter than the piston packing to provide a space for passage of lubricant. Grease &c. is supplied from a gun t through axial and radial bores o, p, in the piston rod to the said chamber. A non-return valve may be mounted in the axial bore.
Patent GB-387849-A (GB)
Title: Process of producing alloys of beryllium and aluminium
IPC: C25C3/36
Filed: 1932-10-04
Abstract: As alloy of aluminium and beryllium is obtained by electrolysis of a mixture of the basic fluorides of the metals obtained in the following way.  Comminuted ore of the composition 3 BeO, Al2O3, 6 SiO2 is mixed with sodium silicofluoride and heated and then lixiviated with acidulated water.  A solution of the double fluorides of the two metals with sodium is decanted off and the hydroxides of beryllium and aluminium are precipitated with ammonia and filtered off.  The hydroxides are dissolved in hydrofluoric acid, and a mixture of the basic fluorides is evaporated out.  The Specification as open to inspection under Sect. 91 comprises the production of a solution of basic fluorides by direct treatment with hydrofluoric acid of the solution obtained from the first lixiviation.  This subject-matter does not appear in the Specification as accepted.ALSO:An alloy of aluminium and beryllium containing about 25 per cent of aluminium is obtained by electrolysis of a mixture of the basic fluorides of the metals.  The Specification as open to inspection under Sect. 91 comprises (1) the production of the alloy by direct chemical reduction of a mineral containing both metals; (2) the use of the alloy as a deoxidizing agent; and (3) the removal of aluminium from the alloy for the production of beryllium.  This subject-matter does not appear in the Specification as accepted.
Patent GB-699790-A (GB)
Title: Improvements in or relating to variable condensers
IPC: H01G5/38
Filed: 1952-03-13
Abstract: 699,790. Electric condensers. GIALLULY, E. M. S. DE. March 13, 1952 [March 13, 1951], No. 6581/52. Class 37. A variable condenser comprising a rotor 27, Fig. 2, and a stator 26 is structurally combined with a fixed condenser comprising a rotor 33, Fig. 3, on the same shaft as rotor 27 and a stator 32. The assembly preferably includes four variable and four fixed condensers, Fig. 5, switches 47, 48 being operated to connect one or other of the fixed condensers in parallel with one of the variable condensers for wave-change switching in a wireless receiver as described in Specification 674,916, [Group XL (c)]. The vanes 27 may be given any desired shape. Trimming condensers may be added to the fixed condensers. The switch is shown as a rod 42, Fig. 4, with bridging contacts 45, the rod being rotated to effect the desired connections.