baber/WOPTO huggingface dataset:
Patent GB-1513731-A (GB)
Title: Digital logic assembly tester
IPC: G01R31/3193
Filed: 1975-05-21
Abstract: 1513731 Testing logic circuits MARCONI  INSTRUMENTS Ltd 21 May 1975 [19 March 1974] 12043/74 Heading G1U A logic circuit tester of the type that applies a pattern of test stimuli to selected pins of the logic circuit under test and compares the resulting pattern of test responses on the other pins with the pattern of expected test responses, is characterized in that the comparison is made within a program-specified time window. The tester described also includes the feature that the pattern of test stimuli and the associated pattern of expected test responses are notionally combined together to form a single test pattern which is stored in one register, and an input/ output designating word, which designates word, which designates which bits of the test pattern relate to input stimuli and which to expected output responses, is stored in another register. As described a sequence of test patterns (as defined above) are stored in a register 14, Fig. 1A, having a one-pattern designating buffer 34, and a corresponding sequence of input/output designating words are stored in a register 12 having a one-word output buffer 32. Corresponding bit-positions of the two output buffers 32, 34 are connected to an associated unit 30 which, in use, is connected to the corresponding pin of the logic circuit under test UUT. In operation, each unit 30 receives one bit from buffer 32 which determines whether the unit shall drive the connected pin to the logic level specified by the bit received from the buffer 34, or whether the unit shall merely provide a passive load for the connected pin and compare the logic level present thereon with the expected level as specified by the bit from buffer 34. When the unit 30 is acting as a comparator, the result of the comparison appears on a lead 76, and when the unit is acting merely to apply a stimulus to the connected pin, the signal present on lead 76 is the one that would result from a comparison resulting in agreement. The comparison outputs from units 30 on leads 76 are examined by a unit 62 to see whether the circuit under test produces the expected response within a time window specified by a word in a buffer 64. The system described also includes provision whereby under control of a word from a register 16 selected pins may be ignored, and whereby under control of a word from a register 18 the resistive load that is applied to the output pins of a circuit under test can be either low or high.
Patent GB-901281-A (GB)
Title: Method and apparatus for centrifugal casting
IPC: B22D13/00
Filed: 1961-04-05
Abstract: 901,281. Centrifugal casting - machines. STAUFFER CHEMICAL CO. April 5, 1961 [June 3, 1960], No. 12143/61. Class 83 (1). [Also in Group XL (a)] A centrifugal casting machine comprises a rotating mould 2 which supports a hollow shell 1 of the material to be cast, e.g. compacted tungsten powder, and a non-rotating electron gun movable axially relative to the shell and so constructed as to focus electrons into a wheelshaped beam directed on to a narrow ring extending around the inside surface of the shell, the whole being enclosed in a vacuum tank 37. The gun is moved axially by a motor 36 so that adjacent rings of the shell 1 melt and resolidify in succession. In a modification the gun is stationary and the mould is moved axially. In another modification the axis of rotation of the mould is horizontal, the shell is formed by coiling wire in the mould, and additional wire is fed through a tube to the melting zone during casting. In a further modification, additional powder metal is fed to the melting zone. Extracting castings; casting composite articles. The mould may be cut or etched away, or alternatively left in place as a backing.
Patent GB-473876-A (GB)
Title: Improvements in and relating to electric resistance heaters
IPC: H01B7/16
Filed: 1937-04-28
Abstract: 473,876. Electric wire heating resistances. BRITISH THOMSON-HOUSTON CO., Ltd. April 28, 1937, No. 12147. Convention date, April 28, 1936. [Class 39 (iii)] In making a sheathed electric resistance heating element by the method described in Specification 356,586, [Group XXXVI], the resistance supports 16 are formed of a material, such as lava, which is readily destroyed by pressure and the supports comprise a cylindrical portion embracing the wire and flanges extending from this portion to position the support in the sheath. Supports 16 are threaded on the wire 11 and the whole is then threaded through the sheath and attached to terminals 14 and 15 which are fixed at the ends of the sheath. Indentations 26 are provided in the sheath to keep the supports in position. Powdered insulating material is then sifted into the sheath and the whole is swaged. The supports readily break up during the swaging without injury to the sheath. Specification 144,767, [Class 37], also is referred to.
Patent GB-1494424-A (GB)
Title: Copying machine
IPC: G03B27/54
Filed: 1975-03-24
Abstract: 1494424 Lamps XEROX CORP 24 March 1975 12173/75 Heading F4R A copying machine has an illuminator comprising a transparent dielectric channel 10 made of glass or plastics material along which light can be transmitted from sources 11, 14 and a material in contact with the outer surface of the channel to deflect light out of the channel towards the object 18 to be copied. The material may consist of a layer 16 of white paint on the side of the channel remote from the object 18 or a layer of glass of greater refractive index on the side adjacent the object. In a modification the source 14 is omitted and is replaced by a plane mirror.
Patent GB-734934-A (GB)
Title: Improvements in and relating to phenanthridine compounds and the manufacture thereof
Inventor: WALLS LESLIE PERCY
Filed: 1952-05-14
Abstract: The invention comprises the N-ethyl quaternary salts of 2 : 7-diamino-9-a -thienylphenanthridine, obtainable by the action of ethyl sulphate on 2 : 7 bis-carbethoxyamino-9-a -thienylphenanthridine or the quaternization of any suitable 2 : 7-substituted-9-a -thienylphenanthridine which can be converted into the 2 : 7-diamino derivative subsequently.  In an example the preparation of the quaternary ethyl sulphate of the 2 : 7 bis-carbethoxy derivative above is described, the product being treated with sulphuric acid to hydrolyse, and converted to the ethyl bromide, the iodide, and chloride.  Specification 687,716 is referred to.
Patent GB-564563-A (GB)
Title: Improvements relating to apparatus for automatically controlling the air valves of internal combustion engines
IPC: F02M1/12
Filed: 1943-07-27
Abstract: 564,563. Regulating air - valves. CHANCE BROS., Ltd., and HALLETT, L. B. H. July 27, 1943, No. 12209. [Class 7 (vi)] An air valve e controlled by a thermosensitive device, such as a bimetallic coil a secured to the exhaust pipe, is provided with an electric heater f for the coil and the heater is energized when a switch h, operated manually or in conjunction with the starting device of the engine is closed together with a switch i which may be opened subsequently by a time-delay device, a magnet excited by the generator current or by the coil a. The switch i may be bridged by a resistance k to permit some heating to occur as long as the switch h is closed.
Patent GB-611404-A (GB)
Title: Coin operated typewriter control apparatus
IPC: G07F17/26
Filed: 1944-06-27
Abstract: 611.404. Coin-freed typewriters. GRAHAM, J. B. June 27, 1944, No. 12212. [Class 27] Coin-freed mechanism, similar to that of Specification 581,406, for permitting the use of a typewriter for a certain period after insertion of a coin, is provided with means for rendering the period adjustable. The mechanism is shown mounted in a casing 1 on which the typewriter A is placed. A locking bar B for the typewriter keys C is normally held in its forward locking position by a lever 12 through an intermediate lever 13, a pivoted lock member 14 holding the lever 12 in locking position (shown in broken lines) against the action of a spring 22. The mechanism is operated by a conventional coin-slide 24, which,.when thrust in, pivots a rocker 15 anti-clockwise (Fig. 1). The lock member 14 is connected with the rocker 15 by a spring 20 and so turns with it to release the lever 12 which is, however, now held by a lever 16 also actuated by the rocker 15. On the return of the coin-slide, the lever 16 returns and releases the lever 12 which moves under the action of its spring 22 to release the key locking bar B so that the typewriter can be operated. The coin-slide 24, when moved inwardly also engages and rocks a winding arm 8 on the main shaft 25a of a clock mechanism and sets a spring-loaded trip lever 11 so that a pin 11a on it engages in a notch 10c in a holding latch 10. When released by the coin slide, the clockwork winding arm 8 slowly returns, and finally trips the latch 10 by striking a part 10b thereof, the latch 10 releasing the trip lever 11 which is returned by its spring 19 and restores the key locking lever 12 into engagement with the lock member 14 in which position the typewriter keys are again locked. Engagement of the latch 10 by the winding arm 8 at the end of the period is by means of an eccentric disc 9 so that, by turning this disc, the moment of contact can be adjusted and the period of availability of the typewriter varied.
Patent GB-864420-A (GB)
Title: Improvements in or relating to hydraulic piston and cylinder apparatus
Inventor: WORDSWORTH JACK
IPC: F16D3/80
Filed: 1958-04-18
Abstract: 864,420. Hydraulic couplings. ARMSTRONG PATENTS CO. Ltd. April 16, 1959 [April 18, 1958; Oct. 17, 1958], Nos. 12300/58 and 33150/58. Class 69 (2). [Also in Group XXXII] An hydraulic coupling comprises a plurality of hydraulic cylinders 1a, Figs. 1 and 3, provided in a body member 1 and arranged symmetrically about a spindle 6, and a piston 17 in each cylinder connected to the spindle so as to cause equal loads to be transmitted between each piston and the spindle, the space 31 in the end of each cylinder in front of the piston communicating with an hydraulic chamber 28 having a pneumatic spring 27 to balance the force applied to the hydraulic medium. The spindle is connected by a crank 7 and rods 8 to the pistons 17 which are slidable in the cylinders la, the ends of which are closed by plates 23 to form the spaces 31 connected by passages 25 to the chamber 28 formed between the body 1 and an elastic diaphragm 5. The diaphragm is secured to the body by an end cover 4, which with the diaphragm, forms a pneumatic chamber 27. The hollow interior of the body also forms an hydraulic chamber which is in communication with the inner ends of the piston and is closed by a diaphragm 3 clamped to the body by a second end cover 2, the space between this cover and the diaphragm forming a pneumatic chamber 30. Displacement of the pistons in either direction upon rotation of the spindle or the body, which may be provided with a flange 1b or gear teeth, acts upon the hydraulic medium in either the hollow body or the spaces 28, 31, the applied force in the hydraulic medium being balanced by the pneumatic chambers 27, 30. The passages 25 may be so dimensioned as to restrict the flow of hydraulic medium to provide the coupling with vibration damping characteristics. In another embodiment, suitable for damping the movement of the wheel mounting of a vehicle, the end of the spindle 116, Figs. 5 and 7, is formed with an eccentric projection 140 which, upon angular movement of the spindle relative to the body 100, actuates a plunger 138 provided with one-way valves 144 to pump liquid from a reservoir 112 through one-way valves 148 into the space 124. As the volume of fluid in the space 124 increases, the liquid passes through duets 132 to the cylinders to retract the pistons until a projection 136 opens a relief valve 134 to by-pass the liquid back to the reservoir, the arrangement maintaining the pistons in a desired mean position irrespective of the load applied to the coupling.
Patent GB-934918-A (GB)
Title: Improvements in or relating to methods for checking record imperfections
IPC: G11B23/30
Filed: 1962-03-30
Abstract: 934,918. Testing gramophone records. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 30, 1962 [April 4, 1961], No. 12301/62. Class 40 (2). [Also in Group XL (c)] A gramophone record die is checked by eliminating a band of some 200 c/s. centred at about 5 kc/s. from the input recorded and testing the output on playback for the presence of any spurious signals in the band. The played-back signal is passed through a sharpcut band-pass filter 2 and a variable-gain amplifier 5; the whole signal is passed through an aural weighting filter 3 and an integrator 4 to generate a gain-control for the amplifier 5 related to the general level of the recorded matter such that a fault indication is passed to the means 6 only if the fault is significant in terms of the acoustic level of the recorded programme signals.
Patent GB-564575-A (GB)
Title: Improvements in flexible unions or couplings for pipes
IPC: F16L19/04
Filed: 1942-09-02
Abstract: 564,575. Pipe joints. WRIGHT, H. CLAYTON-. Sept. 2,1942, No. 12355. [Class 99 (i)] A rubber sealing ring 5 mounted on the end of a flared or'flanged pipe 3 is initially of greater diameter than the bore of the socket 1 and is forced therein, the ring being left protruding from the socket and a space being left between the pipe flange and the base 7 of the socket. A flanged nut. 2 is then screwed up to compress the end of the ring. The flange 4 may be a separate washer held between the ring and a shoulder on the pipe. A dished spring washer may be inserted between the flange 4 and socket base 7. Reference has been directed by the Comptroller to Specification 472,773.
Patent GB-937439-A (GB)
Title: Improvements relating to composite concrete and metal floors or roofs
Inventor: LEFEVER FREDERICK ARTHUR
IPC: E04C3/294
Filed: 1960-04-07
Abstract: 937,439. Concrete floors and roofs. UNITED STEEL CO'S. Ltd. April 7, 1961 [April 7, 1960], No. 12398/60. Class 20 (4). A composite concrete and metal floor or roof comprises a concrete slab 5 and at least one metal beam with a perforated web 1, a head 4 along one edge and a flange 2 along the other, the concrete being cast monolithically around the head 4 and extending part of the way down the web 1 so that part of the concrete passes through the perforations. The head 4 is tubular and is welded to the web. Specifications 498,281 and 937,440 are referred to.
Patent GB-261281-A (GB)
Title: Improved apparatus for the manufacture of sweetmeats with multicolour impressions
IPC: A23G3/02
Filed: 1926-05-14
Abstract: 261,281. Gessner, F., and Gottlebe, A. May 14, 1926. Endless-chain machines; rolling-machines; stream-cutting machines; moulding confectionery. -In making coloured confectionery, the impression rollers 1, 2, or stamps &c. receive the colour from rollers 3, pads &c. before contacting with the mass and additional rollers 4 may apply colour to the stream of sweetmeats 10 after contact with the impression members. In endless chain or like stamping machines the colouring roller contacts with the stamps previous to contact with the stream of sugar.
Patent GB-1132868-A (GB)
Title: Self-extinguishing plastics molding materials
Inventor: WEBER HEINZ
IPC: C08K5/01
Filed: 1966-03-22
Abstract: 1,132,868. Self-extinguishing styrene polymer compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 22 March, 1966 [1 April, 1965 (2)], No. 12484/66. Headings C3C, C3G and C3P. A self-extinguishing composition which may be used to produce porous mouldings comprises a styrene polymer, an organic brominated compound and 0À01-5% of 2,3-dimethyl-2,3- diphenylbutane. The polymer may be polystyrene, a copolymer containing at least 50% of styrene and acrylonitrile, or may be prepared by polymerizing styrene in the presence of polybutadiene. The bromine compound may contain at least 4 carbon atoms and more than 40% of bromine, e.g. hexabromocyclododecane or 2,3-tris-(dibromopropyl)-phosphate and the composition may contain at least 0À1% of bromine. In an example, a styrene polymer, an organic bromine compound and 2,3-dimethyl- 2,3-diphenylbutane was dissolved in methylene chloride, pentane was added, the solution was poured on to a glass sheet, the methylene chloride was allowed to evaporate and the sheeting obtained was expanded in steam.
Patent GB-348350-A (GB)
Title: Improvements in absorption or adsorption refrigerating processes
IPC: F25B17/00
Filed: 1930-04-24
Abstract: 348,350. Refrigerating. ELECTROLUX, Ltd., 153, Regent Street, London.- (Assignees of Platen-Munters Refrigerating System Aktiebolag ; 2, Norrmalmstorg, Stockholm.) April 24, 1930, No. 12658. Convention date, May 3, 1929. [Class 29.] Absorption sytems.-In a reversing system the evaporator D is sealed against entry of uncondensed refrigerant during the generating period by a liquid or gaseous medium other than the refrigerant or absorbent. A receiver C of larger capacity than the evaporator may be arranged between the condenser B and the evaporator, which may be filled with paraffin oil as sealing liquid, so that only liquid refrigerant can pass during the heating period, the oil being gradually lifted into the receiver. The generator-absorber A has a central heating flue 3, a heat insulating casing 4, perforated trays 6 on which the absorbent is supported, and a cooling coil 10 supplied from a valve 9 on the condenser cooling-water pipe 8. The refrigerant may be sulphur dioxide and the absorbent silica gel or charcoal; or methylamine as refrigerant may be used with calcium chloride or strontium bromide as absorption medium and pentane as the sealing liquid. Where a gaseous sealing medium such as hydrogen, with ammonia as refrigerant, is used, the receiver may be dispensed with. A gaseous medium partly absorbable in the same medium as the refrigerant or in an additional medium may be used.
Patent GB-113074-A (GB)
Title: Improvements in the Cylinders of Internal-combustion Engines.
Inventor: HAGENS HUBERT
IPC: F02F1/04
Filed: 1917-09-05
Abstract: 113,074. Hagens, H. Sept. 5, 1917. Cylinders, construction of. - The barrel 4 and combustion head 1 of air-cooled cylinders are made of metals having different coefficients of expansion, as steel and aluminium. The joint 3 is conical and the parts are secured by long bolts 5.
Patent GB-696852-A (GB)
Title: Improvements in or relating to loudspeakers and the like
Inventor: NEWLAND EDWARD STANLEY
IPC: H04R9/02
Filed: 1951-05-30
Abstract: 696,852. Loud-speakers. GOODMANS INDUSTRIES, Ltd. June 24, 1952 [May 30, 1951], No. 12761/51. Class 40 (iv). In a loud-speaker of the type having two concentric cones 10, 11 for reproducing different ranges of frequency, the magnetic unit comprises a centre pole-piece 2 and an annular permanent magnet 3 mounted concentrically in a pot-shaped casing 1 whereby two concentric air gaps 6, 7 are defined by the centre pole 2 and pole-plates 4, 5 mounted respectively on the casing and the permanent magnet. The diaphragms 10 and 11 are carried by spiders 12, 14 mounted respectively on the casing and the permanent magnet, but the inner diaphragm may alternatively be mounted on the centre pole. In modifications the pole-plate 4 is dispensed with and the inner plate is extended to co-operate with the casing wall or alternatively the casing is provided with an inturned flange. The field intensities in the gaps are determined by the thicknesses of the pole plates.
Patent GB-400118-A (GB)
Title: Apparatus for recording and reproducing sound records on films
IPC: G11B3/00
Filed: 1932-10-10
Abstract: 400,118. Recording and reproducing sound. GROVES, W. W., 30, Southampton Buildings, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany.) Oct. 10, 1932, No. 12910/33. Divided on 398,656. [Class 40 (ii).] Relates to apparatus for mechanically recording or reproducing sound records on films. According to the invention, the film is guided over a roller against which it is pressed by a closely-fitting cap having lateral flanges and an opening through which the recording or reproducing stylus passes. The apparatus shown is for carrying out the process of record. ing described in Specification 398,656. The film passes over a roller 2 having a groove below that portion of the film in which the sound-groove is formed. The film is guided and tightened preferably over half the circumference of the roller by a cap-like member 6, with an aperture 7 for the stylus and upwardly projecting flanges 9, 10, the flange 10 also extending downwardly over the edge of the roller 2. The flange 9 and the roller 2 are close to but not touching a flange 8 fixed to a wall 20 of the apparatus, the film edges being in contact with the flanges 10, 8. The flanges 9, 10 form bearings for a spindle 11, which is connected bv an arm 12 to a sleeve 14, supported by a rod 18. The sleeve is also connected by an arm 15 to the flange 10. The rod 18 is fixed to the wall 20, to which is anchored a spring 23, so connected to the sleeve 14 as to press the cap 6 on to the roller. A spring 19 acting upon the sleeve normally presses it together with the cap towards the wall 20, and the sleeve can be pulled out against the action of this spring, and rotated, to allow of insertion and removal of the film. Notches 21 are provided in the sleeve to engage with a fixed pin 22 in either position of the cap. The arm 15, the spring 19, and the downward extension of the flange 10 may be dispensed with, guide rails preventing lateral movement of the cap 6 being then provided. The roller 2 may be toothed, and the cap modified accordingly.
Patent GB-596966-A (GB)
Title: Improvements in permanent-magnets
IPC: C22C28/00
Filed: 1940-08-13
Abstract: An alloy of manganese and bismuth is made by melting together the metal in equal molecular proportions, annealing them to obtain large crystals, comminuting and selecting those particles of which the material corresponds closely to the formula Mn-Bi by a known method, such as one depending on the differences in densities or magnetic properties of the particles.  The selected particles are made into a permanent magnet.
Patent GB-567473-A (GB)
Title: Improvements in or relating to boiler or like tubes
IPC: F22B37/12
Filed: 1943-08-12
Abstract: 567,473. Boiler &c. tubes. ALLEY, S. E. Aug. 12, 1943, No. 13079. Addition to 566,312. [Class 64 (iii)] In a boiler &c. tube 10 of the kind described in the parent Specification, each of the depressions 11, 12, 13 is formed with a flat base lying in a plane parallel to the longitudinal axis of the tube. Preferably, the axial length of said base is such as to extend completely along that part of the tube where the internal mound formed by the depression is not overlapping adjacent mounds, as viewed transversely of the tube.