baber/WOPTO huggingface dataset:
Patent GB-639052-A (GB)
Title: Photo electric device for identifying signs marked on surfaces
IPC: G06V30/224
Filed: 1947-03-18
Abstract: 639,052. Photo-electric control systems. FRANCE, H. G. DE. March 18, 1947, No. 7454. Convention date, March 19, 1946. [Class 40 (iii)] In a system which, as described, is for checking the numbers on bank notes but is said to have a wider application, the digits forming the numbers are striated, the number of striations per unit length being characteristic of the digit so that when an image of the digit is scanned by a uniformly moving slit cooperating with a photoelectric cell a current of a characteristic frequency is produced. As shown, notes after checking are transferred by a suction device 16 from a pile 12 to a pile 13. As each new note is exposed, its number is projected on to an opaque screen which has a horizontal slot 21 and is moved in a vertical plane at a uniform speed and so modulates the light falling on a number of photo-electric cells 22, one for each digit, with frequencies characteristic of those digits. Each cell is connected to a group of tuned relays 0 ... 9, the other side of each relay being connected up only in the corresponding position of the corresponding digit wheel of a counter 26. If a relay is operated for each digit, the bank note is transferred from pile 12 to pile 13 and the counter moves on one step. Otherwise the apparatus stops.
Patent GB-449347-A (GB)
Title: Improvements in or relating to the manufacture of concentrated gas liquor
IPC: C01C1/10
Filed: 1935-03-09
Abstract: <PICT:0449347/III/1> In the concentration of gas liquor in which the preheated liquor is supplied to a decarbonating still 10 together with requisite-steam to expel sufficient of the carbon dioxide and hydrogen sulphide to bring the NH3--CO2 ratio in the liquor down to that of the normal ammonium carbonate, the liquor then being distilled in an ammonia still 13, the supply of liquor to the ammonia still and the supply of steam thereto, are controlled by the still head temperature which itself varies in accordance with the ammonia concentration of the final liquor. The stillhead temperature operates a relay of the leak-port type which controls the diaphragms of valves 22, 23, the former controlling the steam supply to the turbine operating the liquor supply pump 1, and the latter controlling the direct steam supply to the ammonia still.  A liquor control valve 4 and the steam control valve 9 to the decarbonating still are consequentially actuated by a thermal relay 16 which is influenced by the temperature of the stream of gases in the outlet-pipe 17.  The liquor is preheated to 70--95 DEG  C. in exchangers 5, 6 heated respectively by the decarbonated liquor and by the escaping gases from the ammonia still.  The latter are condensed to concentrated gas liquor by a condenser 18.  Part of the main liquor supply is utilized to recover the escaping gases from the decarbonating still in a scrubber 19.  A stillhead temperature of 86 DEG  C. is preferably maintained and a liquor containing 20 per cent ammonia obtained.  In a modification of the plant a part of the cold original liquor is supplied directly to the decarbonating still and the mixed liquor therein fed without pre-heating or cooling through a liquid seal to the ammonia still.  Specification 116,074, [Class 69 (ii)], is referred to.
Patent GB-1078792-A (GB)
Title: Plate assembly means
IPC: E04D3/362
Filed: 1966-02-22
Abstract: 1,078,792. Sheet joining means. C. LUNDSGAARD. Feb. 22, 1966, No. 7621/66. Heading E1K. The edges of plastic sheets 1 are formed with a part-cylindrical cross-section 3 such that corresponding cylindrical portions may be engaged to hold adjacent sheets between coplanar and perpendicular positions. The cylindrical surfaces are offset from one side of the sheet additional locking may be provided by longitudinal ribs 15, by ribbed plates inserted in the joint or by cylindrical longitudinal dowels.
Patent GB-609353-A (GB)
Title: Detention screen
IPC: E06B9/52
Filed: 1946-03-12
Abstract: 609,353. Multiple fastenings. CHAMBERLIN CO. OF AMERICA. March 12, 1946, No. 7652. Convention date, March 19, 1945. [Class 44] [Also in Group X] A fastener for a detention screen (see Group X) comprises bolts 36 projected and retracted by cam blocks 37 actuated by rods 38 pivoted to arms 39 on an operator 40 rotated by a suitable key (not shown).
Patent GB-866627-A (GB)
Title: A machine tool
IPC: B23Q3/157
Filed: 1959-03-05
Abstract: 866,627. Change-speed control. KEARNEY & TRECKER CORPORATION. March 5, 1959 [March 10, 1958], No. 7662/59. Class 80 (2). [Also in Group XXII] A machine tool (see Group XXII) comprises a plurality of parallel spindles carried in a support 25, means 102 for connecting a spindle in the operating position to a source of power, a slide 142 movable to effect the connection and advance the spindle and means 189 positively to retain each spindle in its retracted position when it is not in the operating position. A drill 88 can be advanced within a sleeve 83, and is rotated by a variablespeed hydraulic spindle motor 95, driving through three-speed gearing 114 selected by an hydraulically-operated oscillating arm 111, and a clutch 103. The clutch cannot be operated until the gears are rotated at a slow speed. The arm 111 is moved by a threeposition piston 108 carrying free-floating piston heads 122, 123 at each end to ensure centralization of the piston when pressure is applied to each end thereof. Correct positioning of the piston is indicated by actuation of electrical switches 134-136. The rate of movement of the arm can be set by a control valve. The machine may be actuated by punched or magnetic tape.
Patent GB-196163-A (GB)
Title: Improvements in apparatus for delivering measured quantities of small articles such as pills, sweets, tablets and the like
IPC: G07F11/44
Filed: 1922-03-17
Abstract: 196,163. Mercer, A. J. March 17, 1922. Packeting pills, sweets, tablets, and the like in receptacles.-Relates to machines for delivering predetermined quantities of pills, sweets, tablets, &c. into boxes &c., and of the kind in which the articles fall by gravity down a tube arranged above a lower tube and two cut-off members are arranged to move one below each tube so that the top of the lower tube is open when the bottom is closed and vice versa. According to the invention, one tube is used in which is a slot or a number of openings. The pills &c. fall by gravity down a tube c, in which a slot c<1> extends from near the lower end. An upper cut-off member f is adjustably mounted on a spindle e so that when the lower cut-off member l closes the bottom of the tube, the member is withdrawn from the slot and the pills &c. fall tu the bottom of the tube. An adjustable member j supports the member f. The lower cut-off member comprises a metal plate l upon a boss l<1> on the spindle e, the upper part of the plate being bent at right angles. A spring g holds the parts so that the lower cut-off is in the closing position. In use, a box is pressed against the lower cut-off and opens it, closing the top cut-off, the pills between the two falling into the box. In another form, a spring may be arranged to bear on the lower cut-off, or the cutoff members may have a rectilinear movement. The spindle e may be geared to a counting- mechanism.
Patent GB-509589-A (GB)
Title: Improvements in and relating to steam valves
IPC: F01D17/14
Filed: 1939-03-10
Abstract: 509,589. Stuffing-boxes. BRITISH THOMSON-HOUSTON CO., Ltd. March 10, 1939, No. 7808. Convention date, March 12, 1938. [Class 122 (v)] A stuffing-box for steam valves is provided with a connection for introducing a solvent to remove solid precipitations. The solvent may be supplied through the leak-off passage-l or through the valve spindle.
Patent GB-1110894-A (GB)
Title: Neutron collimator with variable passage cross-section
Inventor: KREBS KARLHEINZ
IPC: G21K1/04
Filed: 1966-02-22
Abstract: 1,110,894. Controlling neutrons. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM). 22 Feb., 1966 [25 March, 1965], No. 7824/66. Heading G6P. A neutron beam collimator is formed of stainless steel blocks, two of which are adjustable to change the geometry of the collimation passage. The adjustable blocks are moved hydraulically along the beam axis and the spacing between the blocks is simultaneously varied by means of an associated pin and groove arrangement. By either appropriate shaping of the grooves, or movement of the pins, the blocks may be rotated relative to each other to change the relative dimensions of the entrance and exit apertures of the passage. The opposed faces of the adjustable blocks are set obliquely to the passage axis.
Patent GB-368988-A (GB)
Title: Improvements in electrical tumbler switches
IPC: H01H23/04
Filed: 1931-03-14
Abstract: 368,988. Tumbler switches, CHARLES, W. J., of Veritas Efesca Works, Edward Street. Parade, Birmingham. March 14, 1931, No. 7890. [Class 38 (v).] The bridge c of a tumbler switch is secured to the base a by means of bolts e the heads of which lie in countersunk holes in the side straps of the bridge anc the lower ends of which penetrate into recesses ir the base and are there held by nuts f. In a modification, Fig. 6 (not shown), the bolts e also serve to secure a carrier for some of the switch mechanism, lugs on the carrier being gripped between the bridge and the pillars a<2> of the base. The side straps of the bridge are also extended and provided with holes for attaching the switch to a wall surface.
Patent GB-1103447-A (GB)
Title: Record player
IPC: G11B19/14
Filed: 1965-02-24
Abstract: 1,103,447. Record player. SCMIDT & CO. KOMM. GES. 24 Feb., 1965 [24 Feb., 1964], No. 7910/65. Heading G5R. A record player incorporates a drive motor mounting 17, situated above the plane and to the side of the turntable, which carries a switch 22 for turning off the motor on completion of play and also accommodates a battery for supplying the motor. A further mounting supporting the stylus incorporates the loudspeaker 27 and is arranged to actuate the switch 22 at the end of play, at which time the mounting is raised, to lift the stylus from the record, and secured in the raised position. A record is fitted to the resiliently mounted turntable through a slot 2 in the player's casing and is held in place by suitable guides. The loud-speaker assembly normally rests near the centre of the turntable and in so doing actuates the switch on the motor housing to disconnect the battery circuit. To play a record, a lever 37 on the front of the housing is moved across to engage the loud-speaker-stylus assembly and then drawn back to transfer the assembly from the switch to the edge of the record.
Patent GB-141491-A (GB)
Title: Improvements in wheels of tractors, more especially for use in agriculture
IPC: B60B15/02
Filed: 1919-03-29
Abstract: 141,491. Austin Motor Co., and Hancock, A. J. W. March 29, 1919. Tyres, non-elastic, and rims.- The surfaces of wheels for tractors are formed with integral ribs or projections a, which are narrow compared with the distance between them, and which project only slightly from the rim surface A. The projections have an appreciable bearing-surface, and may be arranged in chequer fashion. Spuds B may be attached to the wheel, the inner surfaces being plain and bearing against the projections on the tread.
Patent GB-881107-A (GB)
Title: Improvements in or relating to the purification of silicon halides and the preparation of hyperpure silicon
Inventor: PELLIN REMO ANGELO
IPC: C01B33/08
Filed: 1958-03-12
Abstract: A silicone halide is purified by treatment as a liquid or a gas with sulphuric or phosphoric acid.  Halides specified are silicon tetra-chloride, -bromide, and -iodide, and disilicon hexachloride, and -bromide.  The sulphuric acid may be of 80-100%, preferably 95-98% strength, and the phosphoric acid of 85% strength.  The contact time may be 5 sec. - 5 min.  The ratio of silicon halide to acid may be 300:1.  Gaseous halides may be treated with sulphuric acid at temperatures below its b.p., preferably below 200 DEG C. Gaseous silicon tetrachloride may be passed up through sulphuric acid at a temperature of, e.g. 58 DEG C. The temperature of treatment for liquid halides may be room temperature for the chloride, 95 DEG -150 DEG C. for the bromide, and 120 DEG -150 DEG C. for the iodide.  A liquid halide may be shaken with the acid in a separating funnel. Liquid silicon tetrachloride may be passed up through one or more acid-containing columns in series, the columns being free from packing or packed with quartz rings.  Alternatively the acid may be passed down through a column of the liquid silicon tetrachloride. Liquid silicon tetrabromide may be passed down through a column of the acid.  Impurities may in addition be removed before and/or after the acid treatment by a pyrolysis treatment at a temperature of above 600 DEG C., preferably 975 DEG -1200 DEG C., and at sub-atmos., atmos., or super-atmos. pressure, for a period of 0,5-60 sec., usually 1-5 sec.  Silica rings or chips of 2-16 mesh may be present, and nitrogen or noble gas may be used as carrier gas, in the pyrolysis zone.  Examples are given.  Silicon may be prepared from the purified halide by vapour phase reaction with zinc at a temperature of 907-1100 DEG C., and at sub-atmos., atmos., or super-atmos. pressure.  A 50% excess or deficiency, preferably a 5-10% excess, of silicon tetrachloride may be reacted.  Nitrogen or a noble gas may be used as carrier gas.  Examples are given.
Patent GB-915303-A (GB)
Title: Pyrrolo[2,3-d]pyrimidine derivatives and the manufacture thereof
IPC: C07D487/04
Filed: 1959-03-09
Abstract: The invention comprises pyrrolo [2,3-d] pyrimidine derivatives of the general formula <FORM:0915303/IV (b)/1> (wherein R1 represents a hydrogen atom or a methyl group, R2 a hydrogen atom or a C1-C4 alkyl group, R3 a hydrogen atom or a C1-C6 alkyl group and R4 an alkyl, alkenyl, cycloalkyl, hydroxyalkyl, alkoxyalkyl, dialkoxyalkyl, carboxyalkyl, dialkylaminoalkyl or aralkyl (including alkoxyaralkyl) group of not more than 14 carbon atoms, or NR3R4 represents a pyrrolidino, piperidino, morpholino or N1-(C1-C4 alkyl)-piperazino group), and the preparation thereof by heating a 4-chloropyrrolo[2,3-d]pyrimidine of the general formula <FORM:0915303/IV (b)/2> with an amine HNR3R4.  The products, and their acid addition salts containing pharmaceutically acceptable anions, are useful as hypotensive, hypnotic, anticonvulsant, muscle relaxant and/or tranquillizing agents.  Specifications 812,366 and 915,304 are referred to.
Patent GB-282251-A (GB)
Title: Individual power feeds for multiple tapping machines
IPC: B23G1/20
Filed: 1927-03-23
Abstract: 282,251. Imray, O. Y., (National Automatic Tool Co.). March 23, 1927. Tapping. - In a multiple-spindle drilling and tapping machine the axial feed of each tap is positive and individually variable to suit the pitch of the respective taps. The machine comprises a support on which a worktable and a tool-head 3 are relatively adjustable, the tool-head having a number of adjustably secured arms 5 each having a bearing 4 for a rotary spindle S. Each spindle S has a cavity s in which is splined a tap-holder L provided with a screw-thread 8 of the same pitch as the tap T. A screwed bush 10 engages the thread 8 and is attached to a supporting plate 14 by a set-screw 20, the plate being adjustably secured by nuts 18 on rods 15 carried by the tool-head 3. In a modification the bushes 10, Fig. 3, are mounted by means of tongues and grooves 22 on brackets 5a depending from the arms 5 and are secured by screws 21. The individual positions of the taps may be varied to suit work of varying height, by providing brackets 5a of different lengths. Driving devices. - In a yielding drive for the taps to prevent damage to the work or machine when bottoming or on breakage of a tap, the tap-holder L, Fig. 5, is splined at 29 and is engaged by a number of balls 26 situated in radial recesses in a flange 24 on the spindle S and pressed into the splines by springs 27 adjustable by screwed plugs 28.
Patent GB-331900-A (GB)
Title: Automatic feed for punch presses
IPC: B21D43/09
Filed: 1929-03-12
Abstract: 331,900. Wittek, J. March 12, 1929. Metal-sheet feeds; punching ; shearing.-An automatic feed mechanism for a punching &c. machine comprises continuously driven friction rollers which are automatically opened to arrest the feeding movement during the punching operation. The machine is described as having a punch 15<A> for perforating a strip, a second punch 15<B> for blanking out a square provided with the central aperture previously formed by the punch 15<A>, and a shear blade 15<C> for cutting off waste. Waste portions pass down shoots 46, 48, the blanks required being delivered through the shoot 47. The moving tools are carried by a head 14 guided by pins 19. The strip material is passed under a spring-pressed friction bar 38 and between adjustable guides 34 on a bar 35, to the feed rolls 21, 22 which are intergeared and are driven by chain and bevel gearing from the shaft driving the press head. The upper feed roller 22 is placed under the influence of adjustable spring pressure and one bearing of the shaft for this roll is adapted to be lifted by a pivoted arm 43 actuated bv an adjustable stop 44 on the press head. The arm 43 may be retained in the lifted position by a pin 49 which may be placed in a hole 51 in the frame. An end stop 16
 is provided to limit the feed of the work.
Patent GB-579487-A (GB)
Title: Improvements in and relating to appliances for use in coal-bag and sack filling operations
IPC: B65B67/12
Filed: 1944-05-01
Abstract: 579,487. Sack holders. WORLEY, R. C. May 1, 1944, No. 8102. [Class 58] Apparatus for filling sacks with coal or other commodities comprises a stand mounted on a base 1 and carrying at the top a shoot 4 and a pivoted hoop 6 for extending the mouth of a sack, the hook having a cleat 9 or other projection for engaging and supporting the sack and being so disposed as to grip the sack between itself and the stand. In the construction shown the stand consists of sheet metal side and front plates 2, 3, but according to a modification it may be formed of lengths of angle iron and joined at the front and spaced at the sides by sheet metal. In use the hoop, which is D-shaped in plan, is raised about the pivots 5 on its straight side and inserted into a bag or sack, the handle of the bag then being hooked on the cleat 9 or the top edge of the sack being wedged into the cleat which consists of two splayed lugs. The hoop is then released and by its own weight clamps the bag or sack against the stand, a ridge or projection 8 on the hoop serving to help in the clamping action.
Patent GB-1176102-A (GB)
Title: Improvements in or relating to Crawler Vehicles.
IPC: B62D55/30
Filed: 1968-02-20
Abstract: 1,176,102. Tensioning endless tracks. INTERNATIONAL HARVESTER CO. 20 Feb., 1968 [20 Feb., 1967], No. 8180/68. Headings B7H and B7J. The longitudinally extending endless track on each side of a crawler vehicle is tensioned by an hydraulically operable track adjuster mechanism including an hydraulic system comprising a one-way inlet valve 104 for tightening the track and a dual function valve comprising a sleeve valve element 64 which is movable in a bore 68 and which carries a second valve element 86, the sleeve valve element being manually operable to unseat, hydraulic fluid escaping around the element 64, and the element 86 being preset to open automatically should the track be overloaded when fluid escapes through a bore within the sleeve valve element. As shown each track is tensioned by an idler wheel 22 mounted in a fork 26 which incorporates an hydraulic cylinder 42 enclosing a piston 46. The rod 30 of the piston 46 abuts the front seat 24 of a spring which is mounted at the other end on the track frame 16. A stop is provided on the track frame for the front spring seat 24 if insufficient fluid is present in the chamber 56 of the cylinder 42. Fluid, such as grease, is injected through a nipple 102, the valve 104 and a passage 98 into the chamber 56 to increase the track tension and escapes from the chamber 56 when the track is overloaded through a passage 54, past the ball valve 86, through the interior of the valve sleeve 66, the port 80, annular passage 92 and port 50 to the atmosphere. To empty or vent the chamber 56 the valve sleeve 66 may be rotated manually to disengage the conical end 74 of the sleeve 66 from a seat 72 when the fluid passes to the port 50 round the outside of the end of the sleeve 66. Alternatively the body of the valve 104 may be unscrewed when fluid is vented through a port 52. The valves are mounted parallel to one another in a crosshead 32 which closes the cylinder 42. An idler scraper 40 is mounted on the crosshead 32.
Patent GB-595058-A (GB)
Title: Method of polymerizing unsaturated organic compounds
IPC: C08F36/20
Filed: 1942-06-16
Abstract: An organic oxygen compound containing at least two unsaturated groups is partially polymerized to form a gel, internal strains therein are released and the gel then further polymerized. Suitable organic compounds are those described in Specifications 536,807, 540,938, 540,939, 576,083 and 595,056.  Polymerization is effected by heat and/or light in the presence of catalysts, e.g. oxygen, ozone or benzoyl, lauryl, acetone and tetrahydronaphthalene peroxides.  The monomer or syrupy partial polymer is polymerized to a gel in a mould, the gel is freed from the mould, preferably when it contains 20-75 per cent of matter insoluble in acetone, chloroform, xylene or carbon tetrachloride and permitted to shrink.  Before further polymerization, the gel may be moulded or shaped.  For example, a polished glass or metal plate, if desired coated with a mould lubricant such as a lead soap, may be applied to the surface; the gel may be placed between spherically curved moulds; or it may be bent or curved or folded. Strains may be released after further polymerization has taken place, e.g. a rubber mould may be utilized. The further polymerization may be effected in two steps, e.g. first at 70-90 DEG  C., then at 100-125 DEG  C., and the residual catalyst may be completely destroyed by finally heating at 150 DEG  C.  A thick block of gel may be formed, sliced into thin sheets and further polymerized.  In an example, ethylene glycol bis-(methallyl carbonate) is heated with benzoyl peroxide until its viscosity increases 500 per cent, poured into a tray and heated at 80 DEG  C. until a gel is formed.  The gel layer is removed and wrapped about a cylindrical mandrel, an external mould is applied and the assembly heated at 100 DEG  C. to form a cylindrical tube. Specification 595,057 also is referred to.
Patent GB-1135714-A (GB)
Title: Firing circuit for semiconductor controlled rectifiers
IPC: H03K3/64
Filed: 1967-02-22
Abstract: 1,135,714. Resistance welders. SQUARE D CO. 22 Feb., 1967 [8 March, 1966], No. 8340/67. Heading H2H. A phase controlled thyristor is fired by trains of H.F. pulses which are terminated just prior to supply voltage zeros. Thyristors SCR1, SCR2 are fired by pulse trains from relaxation oscillator transistors T2, T3 controlled by a unijunction transistor T1 which is fired by the charge on a capacitor C1 due to a " O " output (i.e. ground potential) from an OR gate comprising NOR1, NOR2 elements, one " O " input to which is derived from the supply 5 through a phase-shifting circuit 12, a wave squarer 14 and a mixer 16 which is also fed with double supply frequency " 1 " pulses extending over the supply voltage zero which inhibit the operation of transistor oscillators T1, T2. A " 1 " input to NOR1 is also provided when one or both fuses F1, F2 are blown due to overload current in a transformer TC3. The arrangement may control the current in a resistance welder.