baber/WOPTO huggingface dataset:
Patent GB-773383-A (GB)
Title: Improvements in electronic amplifiers
IPC: H03F3/28
Filed: 1954-12-31
Abstract: 773,383. Discharge tube and semiconductor amplifying circuits. ROCHAR ELECTRONIQUE, [formerly ROCHAR]. Dec. 31, 1954 [Jan. 6, 1954], No. 37844/54. Class 40(6) A push-pull circuit is fed with pulses of sufficient amplitude to drive the amplifying element into saturation or beyond cut-. off the pulses being modulated by the low frequency signal. An electromagnetic device is arranged to store energy with an associated diode to feed the resulting current back to the supply. The amplifying element may be a high-vacuum or gasfilled discharge tube or a semi-conductor. A pulse generator 1 feeds tubes 6, 7 in push-pull to drive them to saturation or beyond cut-off. The anodes are fed through windings 10, 11 on a common core to an output transformer 28 feeding a load at terminals 15, 16. The currents flowing in the leads 25, 26 are shown in Fig. 2 so that with tube 6 saturated the current builds up until the pulse input reverses at time 1, tube 6 cutting off and the resulting high potential being reflected as a low potential on the cathode of diode 20 which conducts from time 1 to 2 the tube 7 then conducting until the pulse input reverses again. The low frequency input at terminals 2, 3 modulates the width of the pulses so that an amplified signal appears at terminals 15, 16. In a modification (Fig. 3, not shown) the tubes 6, 7 are tetrodes and resistors are arranged between the anodes and grids to provide negative feedback. A suitable pulse width modulator is described. The pulses may be of triangular waveform.
Patent GB-654937-A (GB)
Title: An opening sash-frame
IPC: E05F11/00
Filed: 1946-12-24
Abstract: 654,937. Windows. BUGGE, C. VAN DER P., and FREUDENBERG, I. L. Dec. 24, 1946, No. 37854. Convention date, Oct. 25. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 10, 1947.] [Class 20(iii)] One vertical member of the frame of each sash 33, 34 is bored longitudinally and through the bore there is passed a stationary rod 35 that extends between the sill 45 and lintel 41 of the stationary frame 36 adjacent one of the vertical side members thereof whereby the sashes, in addition to their normal sliding movement, may. be swung inwardly about the rods 35. The rods are provided with a number of peripheral arcuate grooves 44 in which spring pressed balls 30 engage and the rods are secured by nuts 40 so that they may be easily removed whereupon the sashes may be entirely removed from the stationary frame. The other edges of the sashes are provided with spring pressed balls engaging vertical guides in the other side members of the stationary frame.
Patent GB-1182552-A (GB)
Title: Momentary Break Electrical Switch
Inventor: DIEHL CONRAD
IPC: H01H13/20
Filed: 1968-08-09
Abstract: 1,182,552. Momentary actuation switches. EASTMAN KODAK CO. 9 Aug., 1968 [10 Aug., 1967], No. 38127/68. Heading H1N. To ensure that the contacts 10a, 16 of the momentary-break switch of the parent Specification remain open for sufficient time for apparatus controlled thereby to operate, contact blade 10a is mounted on a pivoted rocker 22 which is rotated when conducting actuating blade 40c is moved upwards between contacts 10a, 16 to separate them so that the return movement of contact blade 10a by spring arm 30 is retarded by the inertia of the rocker 22 when the blade 40c has left contacts 10a, 16. In order to prevent the inadvertent opening of the circuit completed by the switch due to shock or vibration a set of normally closed contacts 19c, 32c are provided in parallel with main contacts 10a, 16. These contacts are opened prior to the main contacts by a finger 40d of actuating member 40 during normal operation, and are reclosed during the return movement of plunger 41 by the resilience of spring arm 19c. In Fig. 2 (not shown), actuating blade 40c normally engages fixed contacts 32c and 16 to complete the shunt circuit, this circuit being broken immediately on normal operating movement.
Patent GB-640153-A (GB)
Title: Improvements in or relating to magnetic deflection systems for cathode-ray tubes
IPC: H01J29/76
Filed: 1946-12-31
Abstract: 640,153. Cathode-ray tubes. PHILIPS LAMPS, Ltd. Dec. 31, 1946, No. 38136. Convention date, Sept. 8, 1943. [Class 39 (i)] Two forms of magnetic deflecting coils are shown for reducing astigmatism and coma in a cathode-ray tube. The axial plane of symmetry passing between the two coils is termed the " principal axial plane," and the axial plane of symmetry perpendicular thereto is termed the " complementary axial plane." In Fig. 1 the coils have a plane trapezoidal shape, and those longitudinal parts which are nearer the luminescent screen are nearer to the complementary axial plane than those longitudinal parts which are further from the screen. In Fig. 2 the coils are curved round the tube neck, and those longitudinal parts which are nearer the screen are further from the principal axial plane than those longitudinal parts which are further from the screen.
Patent GB-1021316-A (GB)
Title: Improvements in or relating to synchronized reading apparatus
IPC: G06K7/016
Filed: 1962-10-09
Abstract: 1,021,316. Statistical apparatus. BURROUGHS CORPORATION. Oct. 9, 1962 [Dec. 12. 1961], No. 38255/62. Heading G4M. Record cards 15 are fed column-by-column through a sensing station comprising twelve photo-cells 22 aligned with the rows of the card. A photo-cell 28 detects the arrival of the leading edge of the card, and another photo-cell 26 detects the passage of the trailing edge of the card after sensing. A toothed wheel 36 coupled to the card drive is sensed magnetically to produce eight pulses for each column spacing moved by a card. As soon as the leading edge of card 15 has covered photo-cell 28, the outputs of photo-cells 26, 28 open AND gate 44, Fig. 2, to allow pulses from the wheel senser 38 to reach counter 58, the latter having been reset when the trailing edge of the previous card reached cell 28. When eight pulses have been fed to counter 58 it produces an output pulse to gate out signals from photo-cells 22 which are in line with the centre of the first column at that instant. Counter 58 then re-cycles and produces successive output pulses at the centre of each of the following columns. When the trailing edge of card 15 passes photo-cell 26, gate 44 is closed, and when this edge passes photo-cell 28, counter 58 is reset to zero. The apparatus may be used for sensing tape which is provided with indexing holes at the beginning and end of each block of data. ,
Patent GB-941939-A (GB)
Title: Centrifugal apparatus
Inventor: BESKOW STIG
IPC: B04B5/06
Filed: 1960-04-11
Abstract: In a centrifugal apparatus for contacting liquids in countercurrent (Fig. 1), the channel walls 25 are provided with slots (Fig. 2) or oblique projections (Fig. 4) which generate intensive mixing of the liquids flowing through the channels. <PICT:0941939/C1/1> <PICT:0941939/C1/2> <PICT:0941939/C1/3>
Patent GB-1343300-A (GB)
Title: Method and apparatus for forming articles from plastic sheetmaterial
IPC: B29C51/36
Filed: 1971-08-16
Abstract: 1343300 Sheet forming PHILCO-FORD CORP 16 Aug 1971 [21 Sept 1970] 38356/71 Heading B5A An article with unidirectionally presented openings 13, 14, e.g. a refrigerator cabinet, is formed from a sheet of plastics by a pair of spaced mould members 26, 27 and an assist plug 24. The sheet 17 is heated by a removable heater 23, and a slight pressure is applied to inflate the sheet. The members 26, 27 are supported spaced apart on a hinged base 28. The assist plug and members 26, 27 are then moved together and vacuum or pressure is applied to cause the sheet to conform to the members. At the limit of movement, an edge 25 of the plug 24 trips a latch 42 to allow the hinge 32 to lower and cause the members 26, 27 to move towards each other and assume a final position conforming to the required shape of the article.
Patent GB-891812-A (GB)
Title: A new or improved article of furniture such as a dressing table
Inventor: AUSTIN FRANK
IPC: A47B67/00
Filed: 1959-11-12
Abstract: 891,812. Dressing tables. AUSTIN (LEYTON) Ltd., F. Nov. 3, 1960 [Nov. 12, 1959]; No. 38403/59. Class 52(3) The central section 4 of a dressing table has a roll-top lid 5 sliding in plastic runways and backed by flexible metal bands 8. The section 4 may be divided up into separate compartments . The lid may also extend downwardly in the front to replace the front wall of section 4. According to the Provisional Specification, the lid may open with a sideways or forward motion.
Patent GB-1287432-A (GB)
Title: Binding agents
Inventor: HALSEY GORDON
IPC: B22C1/20
Filed: 1969-07-31
Abstract: 1287432 Producing a ceramic mould MONSANTO CHEMICALS Ltd 25 June 1970 [31 July 1969] 38527/69 Heading B5A [Also in Division C1] A ceramic shell mould is obtained by coating a pattern with a slurry of particulate refractory material in a solution prepared by mixing an ethyl silicate having a silica content of 39-43% by weight with from 8-9% of its weight of H 2 O in a mutual solvent e.g. ethanol, isopropanol in the presence of a sufficient amount of an acid which is a catalyst for the hydrolysis of the ethyl silicate e.g. HCl to give a final pH of 1-3, and the coated pattern is then exposed to NH 3  vapour for not more than 90 seconds to gel the coating.
Patent GB-1114626-A (GB)
Title: Water vending apparatus with water purifying means
IPC: G07F13/00
Filed: 1965-09-09
Abstract: <PICT:1114626/C1/1> In a coin-freed vending machine for purifying and then dispensing raw water from a mains supply, a cation ion-exchange unit 86 operating on a hydrogen cycle is connected to the inlet of an anion ion-exchange unit 88 which completes the de-ionisation by transfer of OH-ions. The units 86, 88 may alternatively both be of the mixed bed type.  The unit 88 is in series with an activated carbon filter 96, which absorbs such dissolved gases as chlorine and carbon dioxide and removes organic tastes and discoloration, and with a purity meter 100 and micronic filter 102 which stops carbon carry-over. A conductivity meter 106 actuates a switch to cut off supply when conductivity of the treated water exceeds a predetermined value.
Patent GB-1269534-A (GB)
Title: Improvements in or relating to fluid flow control valves
IPC: F16K35/06
Filed: 1969-08-01
Abstract: 1,269,534. Valves. ROBERT BOSCH G.m.b.H. 1 Aug., 1969 [2 Aug., 1968], No. 38653/69. Addition to 1,214,584. Heading F2V. A valve adjusting device comprises a knob 14 insertable into a recess in a housing 1 against a spring 22 and connectible to a spindle 6 via an intermediate ring 2 journalled in the housing having an opening to accept the squared end 5 of the spindle, and a lockable stop 20 to retain the knob within the recess, the depth of the recess corresponding to at least the height of the knob. The stop 20 is released from a groove 21 in the ring 2 by a key 24 and cylindrical lock 19 so that the knob 14, and sleeve 18 secured thereto, can be pushed outwards by the spring 22. At the outermost position, teeth 15 on the knob engage teeth 13 on the ring 2 so that rotation of the knob can be transmitted to the spindle 6. The housing 1 is attached to a valve body 7 by sleeve 8.
Patent GB-365747-A (GB)
Title: Improved means for dispensing aerated beverages
IPC: B43K21/00
Filed: 1930-12-23
Abstract: 365,747. Dispensing liquids. KINMONT, G. M., 15, Signal Hill Road, Opoho, Dunedin, Otago, New Zealand. Dec. 23, 1930, No. 38655. Convention date, May 30. Addition to 365,089. [Class 116.] Two or more vessels 1 of the siphon bottle type are detachably connected through a chamber 14 and by a pipe 5 to a " soda fountain." The chamber is fitted with check valves 15 to prevent return flow. To prevent the apparatus being completely emptied a small vessel similar to the vessels 1 may be connected through a valve with the chamber 14.
Patent GB-1479699-A (GB)
Title: Process for producing adiponitrile electrolytically
IPC: C25B3/29
Filed: 1974-09-04
Abstract: 1479699 Hydrodimerizing acrylonitrile into adiponitrile STANDARD OIL CO 4 Sept 1974 [10 Sept 1973] 38684/74 Heading C7B Adiponitrile is produced by electro-chemical hydrodimerization of acrylonitrile dissolved in an aqueous electrolyte, preferably in an undivided cell, wherein ammonia is added to the cell and oxidized at or near the anode. The electrolyte preferably contains at least 15% water and comprises acetonitrile or a tetraalkyl, e.g. ethyl, propyl, butyl, ammonium salt, e.g. bromide, chloride, paratoluene sulphonate. The ammonia is preferably added to the cell, e.g. injected into a line downstream of a pump for cycling the solution removed through a cooling system, in an amount at least equal to that stoichiometrically required as a proton replenisher e.g. 0À1 to 0.5 molar. Bi-polar disc electrodes spaced apart by plastics inserts may be used; preferably graphite anodes impregnated with metal e.g. Pt, and cathodes with high hydrogen over-voltage e.g. Pb, Hg, Al, Sn, Zn or Cd. Specification 1169525 is referred to.
Patent GB-866999-A (GB)
Title: Improvements in and relating to the production of reinforced endless rubber belts orbands
Inventor: MACDOUGALL DANIEL
IPC: B29D29/06
Filed: 1958-12-02
Abstract: In manufacturing an endless rubber band or belt in which cord 6 is wound helically on to a layer of rubber 1 carried on a rotating cylindrical mandrel 2, e.g. as described and claimed in Specification 843,461, to ensure that the helical convolutions are of constant diameter the cord, in its path to the layer of rubber on the mandrel, is wrapped around a cylindrical gauging mandrel 3, axially parallel to and rotated with the rubber <PICT:0866999/IV (a)/1> carrying mandrel, having an effective diameter determining the diameter at which cord is wrapped thereon, and the gauging mandrel is rotated at a rate according to the desired diameter of the convolutions of cord in the finished band or belt.  The ratio of the rates of rotation of the two mandrels is accomplished through a gear-box 7 which also drives a lead screw 4 so that it traverses a pulley 5 at a rate to lay the cord 6 on the rubber with the desired pitch.
Patent GB-1075208-A (GB)
Title: Azeotropic distillation process
Inventor: PERKINS ALAN JAMES
IPC: B01D3/40
Filed: 1965-09-13
Abstract: An organic liquid is purified by introducing it into the side of a distillation column which contains a boiling solvent, which has a lower boiling point than the organic liquid and forms an minimum boiling azeotrope with the impurities, and maintaining a constant concentration in the range of 40 to 90 mol percent of solvent on the plates below the feed-point of liquid-to-be-purified but above the reboiler section of the column.  Vapours of the azeotrope leave the top of the column; and the purified liquid (free from solvent) flows out of the base. In an example, a C2-C4 saturated aliphatic carboxylic acid fraction is fed into a column which has been started up under total reflux with water.  When the temperature at the base of the column is about 164 DEG C. (940 mm.), distillate taken overhead, is cooled to 52 DEG C. and passed to a separator.  The condensate separates into two layers.  The organic layer, which contains the impurities together with some acids and water, is discharged from the system.  The aqueous layer is refluxed back to the column. Water is introduced into the column below the acid-feed point at a rate sufficient to compensate for the water removed from the system in the organic layer.  A dry stream of purified C2-C4 acids is withdrawn from the base of the column, and may be fractionated to separate n-butyric acid.  The process may also be used for the purification of 2-pentanone, butyraldehyde and ethylene glycol, using ethanol, acetone and water as solvents, respectively.
Patent GB-1283307-A (GB)
Title: Process for the production of mild steel tubes
IPC: C21D9/08
Filed: 1970-08-13
Abstract: 1283307 Decarburizing steel tubes WIRSBO BRUKS A B 13th Aug 1970 [25th Aug 1969] 39084/70 Heading C7D Mild steel tubes are placed in a container and heated to 640‹-900‹C, without a protective atmosphere; the tubes are then held at temperature while wet hydrogen is introduced, after which the container is transferred to a cooling pit where dry hydrogen is circulated until the temperature reaches 200-300‹C. The container may then be flushed with nitrogen and cooling continued in air. The hydrogen may be in the form of cracked ammonia and, while wet may have a dewpoint of 30‹-50‹C., the treatment time being 2 to 4 hours. The product is extremely ductile, and is particularly suitable for piping installation, such as heating systems.
Patent GB-1488110-A (GB)
Title: Electric switches
IPC: H01H19/11
Filed: 1974-09-24
Abstract: 1488110 Mechanical switches IMI SANTON Ltd 24 Sept 1974 [20 Aug 1973 27 June 1974] 39226/73 and 28510/74 Heading H1N In a fuse switch assembly having a rotatably mounted actuating means, a detent locating means in a plastics casing comprises a rotary cam 9, Fig. 2, formed with a plurality of depressions 10 and at least one restraining member 12, slidably mounted between guide surfaces 13 of the casing and urged by resilient means against the cam 9. The recess 14 in the casing may be formed in two adjacent casing parts joined in a plane transverse to the shaft axis. In the example shown a pair of restraining members 12 carrying balls or rollers 17 are diametrically opposed and resiliently urged together by tension springs 18. In a modification a cam (23), Fig. 4 (not shown), has rounded lobes (27) and slides (29) are urged together by compression springs (35) extending between recesses (34) in the slides and a wall of the casing. Specification No. 1,478,837 is referred to.
Patent GB-948834-A (GB)
Title: Laminates
IPC: C09J133/08
Filed: 1961-11-02
Abstract: Polymers having substituents each of which bears on adjacent carbon atoms a hydroxyl radical and an amino radical bearing at least one active hydrogen atom are prepared by reacting (a) methyl methacrylate, butyl methacrylate, and glycidyl methacrylate, (b) methyl methacrylate, n-hexyl methacrylate, and glycidyl methacrylate, (c) ethyl methacrylate, and glycidyl methacrylate, (d) tert-butyl methacrylate, and glycidyl methacrylate, or (e) styrene, ethyl acrylate, acrylonitrile, and glycidyl methacrylate, with ammonia, or a primary monoamine. Another copolymer, the preparation of which is described, is derived from methyl methacrylate, and 2-hydroxy-3-amino-propyl allyl ether.  The copolymers are prepared by solution polymerization using a ,a 1-azodiisobutyronitrile, or benzoyl peroxide as the catalyst.  Specifications 605,445, 845,364 and 936,398 are referred to.
Patent GB-901689-A (GB)
Title: Hydrocarbon distillate fuel compositions
IPC: F02B3/06
Filed: 1958-12-05
Abstract: A liquid hydrocarbon distillate fuel having a boiling range above that of gasoline, contains 0,01 to 5% by weight of manganese as a cyclopentadienyl manganese tricarbonyl compound. The fuel may be kerosene, heating oil, gas oil, diesel oil, lamp oil, furnace oil or an industrial or domestic fuel oil.  In examples fuel compositions contain cyclopentadienyl manganese, tricarbonyl, methylcyclopentadienyl manganese tricarbonyl, octyl-cyclopentadienyl manganese tricarbonyl, indenyl manganese tricarbonyl, ethyl-cyclopentadienyl manganese tricarbonyl, phenylcyclopentadienyl manganese tricarbonyl, or ethyl methylcyclo-pentadienyl manganese tricarbonyl.  Specification 781,065 is referred to.
Patent GB-1119098-A (GB)
Title: Improvements in or relating to return mechanisms for non-reversible roll stands
IPC: B21B41/04
Filed: 1966-09-02
Abstract: 1,119,098. Rolling. KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE A.G. 2 Sept., 1966 [4 Sept., 1965], No. 39260/66. Heading B3M. A guide, for returning sheets to the pass of a non-reversible two-high rolling mill, includes a cage 3 embracing the upper, adjustable, roll 2 and carrying pairs of sheet-feeding rollers 6. The rollers 6 are driven at the same peripheral speed as the roll 2 by rollers 4 which provide a chain drive 7 and also serve to support the cage on the roll. Rollers or balls 9 prevent contact between the sheet and cage. A doctor blade 10 at the exit side of the rolls carries a hydraulically or pneumatically-operated rocker 11 which either directs a sheet around the guide (as shown), or, when retracted, directs it clear of the mill. The rocker may be operated manually, or automatically using one or two sensors 14. The sensors are of electro-optical, mechanical, capacitive, or radio-active type, and sense the beginning and end of a sheet to monitor its length, the position of the rocker, and also the adjustment of the top roll 2, thus being controlled.
Patent GB-1284881-A (GB)
Title: Pneumatic breaker steels
Inventor: BARBER ANTONY DOBSON
IPC: B25D17/11
Filed: 1968-08-16
Abstract: 1284881 Percussive tool bits HOLMAN BROS Ltd 18 Aug 1969 [16 Aug 1968] 39282/68 Heading B4C A tool bit 10, for use in a pneumatic breaker, comprises a tubular body 11 having a bore 12 containing a core 18 integral with, or attached to a working tip 13 and at least one cavity between the core 18 and body 10 containing sounddamping material 22. The sound-damping material may be lead-shot or sand and its containing cavity may,be annular. The body 11 is hexagonal in cross-section. The core may have portions along its length filling the bore and providing several annular compartments instead of the one shown.
Patent GB-809979-A (GB)
Title: Code recording apparatus
IPC: G06K1/12
Filed: 1956-12-31
Abstract: 809,979. Perforating-machines. BURROUGHS CORPORATION. Dec. 31, 1956 [Dec. 29, 1955], No. 39650/56. Class 31(2). [Also in Group WVI] Machine for printing or perforating in selected positions.-A machine for recording code impressions M, Fig. 15, on a sheet R, e.g. a cheque, comprises a rotary printing or perforating member 300 carrying a plurality of recording elements 330, Fig. 2, each adapted to record a similar impression M on the sheet and each element being selectively settable to different circumferential positions to represent data determined by the differential position of the code impression. As shown, the recording elements make fluorescent printing impressions but may be perforating devices on the member 300 coacting with a rotary apertured die synchronously driven. After the elements have been positioned by manual rotation of the discs 331 they are locked in position by pawls 350 controlled by a bail 355 actuated by a hand lever 365 and mechanism 366-372, pin 375, arm 361, shaft 341, upon which arms 356 and 357 of the bail 355 are attached. If rotation of the member 300 is started before the hand lever 365 locks the discs, a cam on a shaft 18 carrying the member 300 automatically operates the locking mechanism. Sheets on which the recordings are to be made are fed to a platen 29, Fig. 1, by feed bands 26 and when the sheet approaches the platen 29, a roller 58 is lifted and its action causes a continuously rotating device to be clutched to the rotating member 300 for one cycle of operation. The roller 58 also causes an adjustable stop 224 to position the sheets so that a gripping surface 385 of the member 300 engages each sheet at correct position to move it backwardly and cause a rolling impression of the elements 330 on the sheet at the chosen positions. As the sheet is moved back a feeding roller 233 is raised clear to prevent the sheets buckling. A further roller 233<SP>1</SP> may be manually lifted if necessary. U.S.A. Specification 2,071,139 is referred to.