baber/WOPTO huggingface dataset:
Patent GB-500952-A (GB)
Title: Improvements in or relating to mixing or grinding mills and the like
IPC: B02C7/08
Filed: 1937-08-14
Abstract: 500,952. Disc mills. SMITH, M. Aug. 14, 1937, No. 22408. [Class 59] A disc mill is provided with a container for collecting material discharged from the discs and the material is discharged from the container through an outlet in the wall thereof by means of a baffle having an edge in close proximity to the wall, the relative movement between baffle and container trapping the material between the inside surface of the container and the baffle and squeezing it through the outlet. As shown, the mill comprises a feed hopper 10, having a compressed air or weight-operated rammer 12, a stationary disc 13 secured to the bottom of a cylindrical extension 11 of the hopper, and a rotating disc 14, mounted on a motor driven shaft 16 offset from the axis of the portion 11 and carrying a grinding plate 17 secured to it by a domed nut 18. The hopper is adjustably supported from the motor housing 15 on three pillars 19 by means of lugs 22, pivoted to and slidable along a shaft 21 curried by two of the pillars, and a lug 20 having a hole 25 engaging the third, t.he hole being slotted to allow the eccentricity of the discs to be varied. Vertical adjustment is effected by means of knurled nuts 23a and lock nuts 24. After grinding, the material passes into a rotating collector drum 27 driven by the motor, at a lower speed than the disc, through pulleys and shafting. The drum is provided with a cover 37 in three portions hinged to the pillars 19, delivery slots 32, and a guide baffle 33 supported by a member 38 from the bar 21. The slots 32, Fig. 4, are inclined backwardly to the direction of rotation of the drum at 45‹ to the radius. Under centrifugal action, the ground material collects in the corner between the baffle 33 and the drum wall, passes out via the slots and is removed by a scraper 34 attached to one of the pillars 19.
Patent GB-1142868-A (GB)
Title: Improvements in and relating to semiconductor device headers
Inventor: SCHOLES GEOFFREY WILLIAM
IPC: H01L23/045
Filed: 1966-05-19
Abstract: 1,142,868. Making semi-conductors. ASSOCIATED SEMICONDUCTOR MFRS. Ltd. 19 May, 1966, No. 22421/66. Heading B3A. [Also in Division H1] A semi-conductor device header is made by loading into a jig, an apertured metal shell, an apertured glass preform, a pattern of conductive foil and a plurality of metal conductors, the preform being sandwiched between the shell and the foil, the conductors passing through the shell and the preform, and heating the jig to fuse the preform to the shell, the conductors and parts of the foil. The components for the header are assembled in the jig (Fig. 5, not shown) in the reverse order to that shown in Fig. 4. Thus silver-clad nickel brazing rings 12 are placed in recesses (35) in the lower part (31) of the jig. Further components of the header are assembled in the order, a nickel/iron/ cobalt foil 23 having a plurality of web patterns 6, 7 and 8; the centre plate (32) of the jig; a borosilicate preform 24; the nickel/iron/cobalt header shell 1; a borosilicate preform 26; the top plate (33) of the jig; a weight (42) of annular section resting on the flange of the shell and another weight (43) resting on the preform 26. Nickel/iron/cobalt conductors 3 coated with nickel and gold are inserted into the assembly using ultrasonic vibrations. The loaded jig is heated to 1000 C. in N 2 , thus fusing the glass preforms to the shell and to one another and also brazing the conductors 3 to the web via rings 12. After removal from the jig, the foil 23 is cut and the exposed metal parts of the header electrolessly plated with nickel and then gold. The web pattern of the metal foil may be formed by photo-etching or punching. In a modification, one of the web patterns is isolated from the conductors. The header may be used for mounting one or more devices, e.g diodes, transistors, opto-electronic devices or multi-element integrated circuits.
Patent GB-1017727-A (GB)
Title: Variable speed power transmission mechanisms
Inventor: ALCOCK JOHN FREDERICK
IPC: F16H47/06
Filed: 1963-06-06
Abstract: 1,017,727. Variable-speed gear. HUNSLET (HOLDINGS) Ltd. April 28, 1964 [June 6, 1963], No.22521/63. Heading F2D. A variable-speed gear in a rail or road vehicle, connecting input and output shafts which may be directly coupled for direct drive by a clutch &c., includes an alternative parallel power path, comprising two trains of gears and an hydraulic transmission device, which establishes a step-down ratio. Direct drive between input and output shafts 10, 14, the Fig. (not shown), is established by engagement of a multidisc clutch 17, while a step-down ratio can alternatively be established through gears 11, 12, an hydrodynamic torque converter 13 and gears 15, 16. To prevent power losses when the clutch 17 is engaged, either the torque converter 13 is emptied or alternatively the gear 15 is mounted on an over-run clutch. As a further alternative, an over-run clutch may be provided between the clutch 17 and the gear 16. The friction clutch 17 may be replaced by an hydraulic &c. clutch.
Patent GB-203709-A (GB)
Title: Improvements in and connected with the manufacture of chromates and bichromates
IPC: C01G37/14
Filed: 1923-03-17
Abstract: 203,709. Jouve, A. J. B., Helbronner, A., and Soc. Hydro-Electrique et MÚtallurgique du Palais. Nov. 23, 1921, [Convention date]. Addition to 177,174. Alkali chromates and bichromates and iron oxide, producing.-In the electrolysis of an alkali carbonate solution with an anode of a chromium alloy, such as ferrochrome, according to the parent Specification, the electrolysis is continued after the complete conversion of the carbonate into chromate, in order to form bichromate. Concentrated solutions are preferably employed so that the resulting bichromate solution is near the crystallizing point. A current density of some hundreds of amperes per sq. metre is employed so as to heat the electrolyte. The electrolysis may be carried out in a series of baths between which the electrolyte circulates. The cathodes may be of lead. Iron oxide is removed from time to time by agitation and filtration of the liquid or by centrifugal separation. Neutral chromate may be obtained from the bichromate solution so prepared by adding excess of alkali carbonate.
Patent GB-221083-A (GB)
Title: Means for conveying sacks of material, goods, packages or other heavy articles from one stance or level to another
IPC: B65G67/00
Filed: 1923-09-08
Abstract: 221,083. Reid, J. Sept. 8, 1923. Winch-actuated hoists with guided carriers.- In means for loading railway trucks of the kind in which the load is placed on a carriage suspended from a trolly which is hauled up an inclined track by a winch and descends by gravity and the track is supported on standards so as to overhang the truck, the inclined bar 4 to which the track 9 is attached is supported by standards 6, 6<a> and by a strut 18 engaging the upper edge of a side of the truck. The bar 4 is attached to the standards by cross-bars 7, 7<a> permanently attached to the bar, and the standards are connected by tie-rods 20. A slidable hook 8 on the standard 6 engages the upper edge of the truck side. Additional struts 19 attached to the top of the standards 6 may rest on the truck.
Patent GB-288476-A (GB)
Title: Improvements in double acting internal combustion engines
IPC: F02B75/28
Filed: 1927-08-29
Abstract: 288,476. Schwarz, F. Aug. 29, 1927. Pistons, cooling.-In an internal-combustion engine a pump piston e is of larger diameter than, but integral with, two power pistons a<1>, a<2>, the drive being through side connecting rods h. The upper side of the pump piston draws air into the compression chamber m past the rotary valve i and through the hollow piston interior and ports k in the piston. On the up-stroke part of this air returns through the upper piston to cool it; the major portion of. the air is compressed and used for scavenging and charging. The lower side of the pump piston causes air circulation in and out of the crank case for cooling the piston.
Patent GB-1147252-A (GB)
Title: Electrical connector for integrated circuit elements
IPC: H05K7/10
Filed: 1967-05-16
Abstract: 1,147,252. Two-part couplings. HUGHES AIRCRAFT CO. 16 May, 1967 [20 June, 1966], No. 22702/67. Heading H2E. An integrated circuit 14 is mounted on a resilient connector body 10 with its terminal leads 24 traversing grooves 22 and 26 and overlying contacts 44, the body 10 being integrally joined by hinges 70 to a cover 60 with ribs 64 which, on closure of the cover, clamp the leads 24 against the contacts 44. Each contact 44 terminates in a square pin 52 for connection to a circuit-carrying board (54, Fig. 2, not shown) to which the connector body 10 is secured by bolts or screws. The contacts 44 are pressfitted in the body 10 and retained by cooperating shoulders 40. A central aperture (90) in which the integrated circuit 14 is located extends through the thickness of the body 10 to allow cooling of the circuit 14. The cover 60 is held closed by respective engagement of a latch 72 and recesses 78 with a bar 74 and lances 76.
Patent GB-717641-A (GB)
Title: Plasticised sulphonated polystyrenes
IPC: C08K5/053
Filed: 1952-09-10
Abstract: Sulphonated polystyrene or its alkali metal, ammonium, alkaline earth and amine salts may be plasticized with glycerine to yield compositions which form tough, flexible, water-soluble films.  The styrene polymer, which may have a M.W. of 5,000 to 500,000, and have 0.5 to 2.0 sulphonic acid groups per styrene unit, is plasticized in an aqueous medium to give a solution or by incorporating the glycerine by mechanical mixing, to yield a homogeneous composition which may be moulded by injection, compression or extrusion.  Dyes, pigments, fillers and lubricants may be added.  Specification 683,164 is referred to.
Patent GB-366444-A (GB)
Title: Method of producing sound disc records
IPC: G11B7/28
Filed: 1930-07-28
Abstract: 366,444. Sound records. EHRENHAFT, F., 9, Lietzensee-Ufer, Charlottenburg, Berlin. July 28, 1930, No. 22746. Convention date, Aug. 2, 1929. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] Disc sound records are made by first making a film record (preferably photographically or, alternatively, by cutting a transparent line on a blackened film by means of a vibrating needle) and then producing therefrom, by photo-electric means, a copy of the record upon a sensitized disc, the sound trace thus produced on the disc being in the form of a spiral line. A matrix for the purpose of duplicating the records is prepared from the photographic disc record by an etching or like process. During the transfer of the record from the film to the uniformly-rotating disc, which transfer is effected at a speed that can be varied to suit the sensitivity of the photographic layer, the strength of the light beam acting on the sensitized disc is automatically diminished, in order to maintain the exposure constant as the spiral sound-trace is formed from the outer part towards the centre of the disc. For this purpose a lightabsorbing " wedge " is moved across the light beam. The wedge may consist of a glass vessel filled with an aniline dye solution. The light-sensitive layer on the disc is preferably practically grainless. The record produced by transfer from the film may first be made on a very large transparent disc having a photographic layer, and may then be copied on a reduced scale, by optical projection, on to a disc which is subsequently converted into a matrix for moulding gramophone records.
Patent GB-812269-A (GB)
Title: C-diols and a process for the manufacture of same
Filed: 1956-12-28
Abstract: The invention comprises a 1,18-disubstituted-3,7,12,16 - tetramethyl - 4,15 - dihydroxy - octa-decapentaene - (2,7,9,11,16) - diyne - (5,13) in which each of the substituents in the 1- and 18-positions is the 2,6,6-trimethyl-cyclohexadien - (1,3) - yl radical or the 2,6,6 - trimethylcyclohexen - (1) - yl or 2,6,6 - trimethylcyclohexylidene radical which may contain in the 4-position an acyloxy radical, and the preparation thereof by bilaterally condensing 3,8 - dimethyl - decatriene - (3,5,7) - diyne - (1,9) with the required 4-substituted-2-methylbuten-(2)-al-(1) in an alkali metal or Grignard reaction, and hydrolysing the dimetal-containing compound so formed.  The dimetal-containing compound formed may be the dilithium, disodium or di-halogeno-magnesium)-derivative. The reaction may be carried out in an inert solvent, e.g. diethyl ether or benzene, or in liquid ammonia.  In an example: 1,18-di-[21,61,61 - trimethyl - cyclohexen - (11) - yl - (11)]-, 1,18 - di - [21,61,61 - trimethyl - cyclohexadien - (11,31) - yl - (11)] - and 1,18 - di - [22,61,61 - trimethyl - 41 - acetoxy - cyclohexylidene - (11)] - 3,7,12,16 - tetramethyl - 4,15-dihydroxy - octadecapentaene - (2,7,9,11,16) - diyne - (5,13) are prepared.  Specifications 775,060, 789,693, 797,200, 802,136 and 812,268 are referred to.
Patent GB-943010-A (GB)
Title: Improvements in reciprocating pumps or the like
IPC: F04B1/24
Filed: 1960-06-30
Abstract: 943,010. Reciprocating pumps; compressors; driving gear. D. N. MANTON. June 30, 1961 [June 30, 1960], No. 22856/60. Headings F1A, F1B and FIN. A reciprocating pump or compressor comprises a pair of rotating cylinder blocks 10 mounted about convergent axes and having L- shaped pistons 17, one arm of each engaging in a cylinder in one block and the other arm of each engaging in a corresponding cylinder in the other block. The cylinder blocks 10 are mounted in a frame 12 and are driven through bevel gears by an electric motor 29. A valve cap 18 on each cylinder block encloses ball valves 20 and the fluid pumped passes to outlet sleeve conduits 22 in rotary unions 23. Conduits 24 deliver fluid to a central conduit in each block 10 and the fluid passes through ball valves into the cylinders. One cylinder block may be an internal combustion engine driving the other block and may also drive a propeller shaft or gear box.
Patent GB-482034-A (GB)
Title: Improvements in and relating to tranportable cinema projecting equipment
IPC: G03B15/08
Filed: 1937-08-20
Abstract: 482,034. Vehicle bodies. HARRIS, C. J. Aug. 20, 1937, No. 22890. [Class 108 (i)] [Also in Group XX] A projection van has a rear part b low by comparison with the forward part c to permit the projection screen f to be viewed from behind the vehicle.
Patent GB-1362467-A (GB)
Title: Electric power converts
IPC: H02M7/757
Filed: 1972-05-16
Abstract: 1362467 Controlling converters GENERAL ELECTRIC CO 16 May 1972 [17 May 1971] 22903/72 Heading H2F A method of controlling a line voltage commutated bridge inverter comprises sampling the commutating voltage' appearing across the respective main converting elements at a particular point in a cycle in advance of commutation, comparing the instantaneous value of a freshly sampled voltage with a stored value of the previously conducting main converting element, detecting any difference between the instantaneous and stored values, the difference being used to control the firing angle of the next main converting element. The Specification relates to inverters in HVDC systems or reversible rolling mill drives operating at constant margin angle and seeks to prevent commutation failure due to distortion or interference on the commutating voltage. As described, the commutation voltages are coupled to a sampling circuit by means of a pair of three-phase transformers (Fig. 1, not shown) to terminals AC-1 ... AC-6, the numbers relating to the respective thyristors, thyratrons or ignitrons in the main inverting bridge. The commutating voltages are full-wave rectified at 26a ... 26c and fed to the drains of respective field-effect thyristors 25a ... 25c which are repetitively turned on so as to charge capacitor 21 with the instantaneous value of the commutating voltage at that time. The charge on capacitor 21 is transferred by means of a unity-gain amplifier 23 to a further capacitor 22, a summing amplifier 32 providing an output only if the sampled voltage is less than the previous sample. The error output is fed to a firing time computer (Fig. 1, not shown) in the form of a variable frequency oscillator where it overrides a conventional retroactive control so as to prevent commutation failure. The line voltages are also monitored by a pair of three-phase transformers and fed via terminals A-1 ... A-6 to circuits 27a ... 27c where short-duration pulses are produced for turning on the sampling transistors 25a ... 25c by turning off junction transistors 30a ... 30c. Each sampling pulse is displaced by 120 degrees from the voltage being sampled. Fig. 3 (not shown) relates to wave forms indicating the effect of harmonics or interference on the commutating voltage which can produce double sampling pulses and an appropriate error signal from summing amplifier 32. A pair of such sampling systems may be applied to a pair of three-phase bridges connected via stardelta transformers.
Patent GB-154381-A (GB)
Title: Improvements in facing point lock bar clips for railways
IPC: B61L5/10
Filed: 1919-09-18
Abstract: 154,381. Williams, D. D. Sept. 18, 1919. Safety, fouling, and locking bars. - A clip for point lock bars is made by drop-stamping, and comprises a flange-portion B for fixing to the web of the rail, a body portion which beds against the foot of the rail, a strut or struts F which press against the underside of the rail, and a bearer portion A in which the pivot pin K of the rocker is fixed. The portion A may be U-shaped as shown, or may be a single straight member. Lugs are provided to receive stops H for the rockers, or the lugs may be bent to form these stops.
Patent GB-1332736-A (GB)
Title: Process for the large scale production of magnesium oxide of  high purity
IPC: C01F5/30
Filed: 1971-04-19
Abstract: 1332736 MgO preparation VEITSCHER MAGNESITWERKE-AG 19 April 1971 [20 Feb 1970] 22977/71 Heading C1A MgO is prepared from impure MgCO 3 , MgO and/or Mg(OH) 2  wherein the wt. ratio of the impurities calculated as (Fe 2 O 3  + Al 2 O 3  + Cr 2 O 3  + Mn 3 O 4 )/(SiO 2  + TiO 2  + B 2 O 3 ) is at least 1 : 3 by (a) dissolving the Mg-containing material in aq. HCl with a concn. of 15-32% by wt. at a temperature above 70‹ C., (b) adjusting the pH of the brine formed to 4-9 to precipitate the hydrated oxides of Fe, Al, Cr and Mn and carry down SiO 2 , TiO 2 , or B 2 O 3 , any Mn<SP>2+</SP> ions in the sole being oxidized to Mn<SP>4+</SP> ions before or during pptn., (c) separating the ppt. (d) and then thermally decomposing the MgCl 2  brine at 400-900‹ C. thereby forming MgO and converting the HCl gas formed into HCl acid which is used in step (a). The pH adjustment in step (b) may be made using the Mg containing materials and the oxidizing agent may be Cl 2 . Ca<SP>+</SP><SP>+</SP> ions in the MgCl 2  brine may be removed by (i) pptn. as sulphate with H 2 SO 4  or MgSO 4 , (ii) pptn. as carbonate with CO 2 .
Patent GB-1097205-A (GB)
Title: Improvements in or relating to beds
IPC: A47C21/00
Filed: 1965-05-31
Abstract: 1,097,205. Invalids' beds. HORSTKEMPER GEBR. May 31, 1965 [May 30, 1964], No. 23048/65. Heading A4J. A bed for invalids has a bedstead portion 3, Fig. 2, provided with a spring system 6 which supports a frame consisting of an angled member 8 and a U-shaped member 9 surrounding an aperture 3a. Bedstead 3 is covered by a mattress 15 which is also apertured. The aperture in the mattress is normally filled by a bolster 24 supported on a plate 19 which is held in position beneath aperture 3a by catches 12a, 12b. The catches may be released by an actuator 12c and the bolster 24 and its plate 19 replaced by a plate 13 supporting a basin 20. A pivoted arm 21 is mounted at the foot of the bed and has frame 22 on to which the plates 13, 19 may be lowered by a foot-pump-operated telescopic air cylinder 14 after the catches are released. A sheet 16 covering the mattress has a tubular extension 17 which is drawn into aperture 3a and secured hermetically in a slot 11 between members 8, 9 of frame 7 by a circlip 18.
Patent GB-760334-A (GB)
Title: Improved device for stretching hosiery
IPC: D06F59/06
Filed: 1953-08-21
Abstract: 760,334. Hinges. RIDINGS, T. Aug. 20, 1954 [Aug. 21,1953], No. 23050/53. Class 65 (2). [Also in Group VII] In a two-part hinged hosiery stretcher (see Group VII), two plates 10, 11, Fig. 2, are connected by two hinges such as 12, allowing some movement in the plane of the plate 11, and have interlocking projections 16, 17 arranged between the two hinges; in use, the stretcher from its folded state, as shown in broken lines, is straightened with the hinges extended, and the projections 16, 17 are then engaged by sliding the plates 10, 11 together. In a modification, in which the hinges 12 are not slidable, a locking slide 20, Fig. 4, may be moved along a slot cut in the plates 10, 11 from a position wholly on the plate 10 .to a position extending equally across both plates. In a further modification, the plates 10, 11 are replaced by wire frames; the ends of one frame wire are bent inwards to correspond to the hinge pins 13, and rotate in two tubes formed by turned-over extensions of a plate secured by further turned-over parts to the other frame wire; between the two tubes the hinge wire ends are bent at right-angles and normally engage the surface of the plate to lock the two frames in the same plane; by squeezing the sides of the first frame the wire is made to slide through the tubes, and the bent ends then come into line with a cut-away part of the plate, whereby the frames may be folded.
Patent GB-424811-A (GB)
Title: Improvements in draught and weather excluders and rattling preventers for doors and windows
IPC: E06B7/23
Filed: 1934-08-10
Abstract: 424,811. Draught-excluders for doors and windows. HOUSE, A., 40, Farfield Terrace, Heaton, Bradford, Yorkshire. Aug. 10, 1934, No. 23120. [Class 20 (iii)] A draught-excluder of rubber or rubber composition is made of arrowhead shape and is attached, with or without packing, by nailing the stem A<1> to a door D or window, or to the frame, so that the meeting edges of the door &c. and the frame are sealed against draught when the door is closed.
Patent GB-590344-A (GB)
Title: Iron castings and control of producing same
IPC: C21C1/00
Filed: 1944-11-21
Abstract: In a method of manufacturing iron castings a test wedge is cast from a molten mixture containing steel scrap and cast iron and/or pig iron, the "constitutional carbide wedge value" is determined, the molten mixture is graphitised to such a degree that a test wedge cast from the graphitised mixture shows a "processed carbide wedge value" not greater than one half of the "constitutional carbide wedge value" and not greater than one third of the thickness of the casting to be made and not less than an amount which varies as the thickness of the casting and casting the graphitised molten mixture.  The "carbide wedge values" are determined by casting the molten mixture in a wedge shaped mould, breaking the wedge shaped casting lengthwise and determining the width of the line of demarkation between the white and the grey iron.  The molten mixture may be graphitised by any known graphitising method as it flows from the cupola and in the preferred method the "processed carbide wedge value" should be one third of the "constitutional carbide wedge value."  Since the minimum value of the ratio of the "wedge values" depends on the thickness of the casting, regard must be paid to the design of the casting to be made.