baber/WOPTO huggingface dataset:
Patent GB-1184847-A (GB)
Title: Speech Recognition
Inventor: SCARR ROBERT WALTER ALISTER
IPC: G10L15/07
Filed: 1968-04-17
Abstract: 1,184,847. Frequency dependent amplification. STANDARD TELEPHONES & CABLES Ltd. 17 April, 1968, No. 18078/68. Heading H4R. [Also in Division G4] In speech recognition apparatus, a control signal is generated proportional to the difference between the levels of two characteristics of a speech waveform, and a feedback loop modifies the level of one characteristic relative to that of the other in response to the value of the control signal. In Fig. 1, the speech waveform passes through an automatic-gain-control amplifier AGC, then an emphasis network EN, with parallel resistor R 0 . When the speech is unvoiced, a switch S1 is at its upper position, and a switch S2 is open so that an amplifier IA with capacitive feedback C 1  has a 100 second time constant and sets the emphasis network EN to a predetermined condition. When the speech is voiced, S1 is positioned as shown, and S2 is closed so that C 1 , R 4  provide a time constant of 3-6 seconds to cause emphasis to be provided at EN. The first formant is passed by a lowpass filter F1 and the second and third formants by a band-pass filter F2/3 for comparison in a difference amplifier DA1 after passage through envelope detectors (rectifiers) ED and weighting resistors R 1 , R 2 . The difference signal from DA1 passes through resistor R 3  and diode D 1  to provide a 400 millisec. time constant and the emphasis is reduced. Whenever the output of DA1 exceeds thresholds of either polarity, a limiting network comprising resistor R 6 , diodes D 5 , D 6  and Zener diodes D 3 , D 4  conducts to provide a 100 millisec. time constant. This will occur when the speaker changes to one having a significantly different larynx spectrum. Filter F1 may be omitted if low frequency energy is predominant. Depending on the value of the control signal from amplifier IA, the emphasis network EN has zero transmission, a transmission function that increases with increasing frequency (emphasis), or one that decreases with increasing frequency (de-emphasis), to compensate variations between speakers. Fig. 2 shows the emphasis network EN, and resistor R 0 . Field-effect transistors TF1, TF2 act as variable resistors controlled by the control signal from IA in Fig. 1 with the aid of a biasing network consisting of a diode D 8  and Zener didoe D 7 , so that a control signal of - 5À8 volts (maximum de-emphasis) gives TF1, TF2 high and low impedances respectively whereas a control signal of -7À5 volts (maximum emphasis) gives TF1, TF2 low and high impedances respectively, and between these extremes the impedances vary smoothly due to the biasing network. The speech waveform (audio in) passes via resistor R 0  and (depending on the impedance of TF1) a capacitor C 2  to the base of an amplifying transistor TR1, the collector of which provides the output (audio out) and negative feedback via resistor R 7  and (depending on the impedance of TF2) capacitors C 2 , C 3 .
Patent GB-126328-A (GB)
Title: Improvements in Incendiary Shells, Bullets, and the like.
Inventor: BUCKINGHAM JAMES FRANK
IPC: F42B12/44
Filed: 1916-12-18
Abstract: 126,328. Buckingham, J. F. Dec. 18. 1916. Projectiles.-Relates to incendiary projectiles of the kind in which the inflammable contents are projected during flight from a lateral outlet, normally sealed by a fusible plug, as described in Specification 15956/15. According to the invention, the projectile has a passage or slot such as D in its wall, connecting the base with the lateral outlet F, so that the heat and pressure of the gun gases are conducted directly to the seal G.
Patent GB-358932-A (GB)
Title: Improvements in or relating to high frequency amplifying systems
IPC: H04B1/16
Filed: 1930-06-12
Abstract: 358,932. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, ROUND, H. J., Westfield, Muswell Hill, both in London, and TURNER, P. K., 1, Osborne Terrace, Windsor, Berkshire. June 12, 1930, No. 18111. [Class 40 (v).] In a valve amplifying circuit means for reducing the damping of an oscillatory circuit to substantially zero comprise a reacting valve of high mutual conductance to which a small portion of the input is applied so that the action of the valve under impressed signals is substantially linear. The Figure shows a tuned circuit lc to which reaction is applied a small portion of the circuit forming the grid circuit of the valve. The valve may be neutralized and the plate circuit rc, vc may be tuned so as to maintain the feed-back in phase. A push-pull arrangement may be used to give greater linearity to the valve characteristics. The arrangement may form the intermediate frequency amplifier of a superheterodyne receiver to obviate adjustments and known arrangements may be provided to correct for the distortion due to the high selectivity produced. In a modification, Fig. 4 (not shown), the tapped down tuned circuit is arranged in the anode circuit of the valve and coupled to a coil in the grid circuit.
Patent GB-237429-A (GB)
Title: Improvements in or relating to brakes for motor vehicles
IPC: F16D53/00
Filed: 1924-07-29
Abstract: 237,429. Coward, E. S. July 29, 1924. Axles and axle structures.-A collar 33 fixed on the end of the axle casing of a " Ford " vehicle which end projects within the brake drum, has projections 35 for engaging webs 36 on the brake shoes 11, 12 to prevent lateral displacement of the shoes and has also a flange which abuts against a ring secured to the axle to prevent the outer part of the axle carrying the wheel from sliding out of the casing in the event of breakage of the axle at a point within the casing.
Patent GB-663372-A (GB)
Title: Improvements in or relating to shock absorber
IPC: F16F9/18
Filed: 1948-07-06
Abstract: 663,372. Hydraulic shock absorbers. MONROE AUTO EQUIPMENT CO. July 6,1948 [April 8, 1948], No. 18146/48. Class 108(iii) In a hydraulic shock absorber comprising a pressure cylinder 13 with a piston 27 operable therein and having an associated fluid reserve chamber 15 with check valve means 65 controlling fluid communication between the cylinder and reserve chamber, the latter is provided with liquid baffle means in the form of a series of ring elements 77 disposed in axially-spaced relationship, at least one ring element being disposed in close proximity to the valve means The invention is described as applied to the shock absorber forming the subject of Specification 665,001. The baffles are in the form of snap rings sprung on to the outer periphery of the cylinder. In operation the baffles reduce the tendency of air being carried into the cylinder.
Patent GB-670598-A (GB)
Title: Improvements in and relating to air coolers and the like
IPC: F04B39/06
Filed: 1949-07-11
Abstract: 670,598. Tubular heat exchangers. BROWN FINTUBE CO. July 11, 1949 [Nov. 20, 1948], No. 18256/49. Class 64(iii) An air cooler interposed between two spaced aligned sections 10, 11 of an air line comprises a shell tube 16 having its longitudinal axis disposed at an angle to the axis of the air line sections, and having an open end and a closed end, the open end being directly connected to one section (10) of the air line and a conduit 25 connecting the shell tube near its closed end to the other section 11 of the air line, cooling means being disposed within the shell tube for cooling the air passing therethrough. In the form shown, the cooling means comprises a finned tube 30 detachably connected to the closed end of the shell tube and closed at the end remote therefrom, cooling fluid (e.g. water) being passed into the finned tube 30 through a coaxial bayonet tube 34 and flowing back through the annular space between the tubes 30, 34 to the discharge conduit 42. Air to be cooled passes from the air line section 10 through the shell tube 16, and through the conduit 25 to the airline section 11 leading to an accumulator or receiver. Entrained moisture in the air passing through the cooler collects in the sump 45 and to cause this entrained moisture to be thrown outwards on to the wall of the shell, the fins on the tube 30 may be helical, Fig. 4, or axially spaced groups 31b of fins having their ends bent may be provided, Fig. 5. A plurality of finned tubes each having a coaxial bayonet tube may be incorporated in the shell tube instead of the single finned tube shown. The finned tube or tubes 30 may be of the type described in Specification 670,574 in which the fins are formed from channel-section members having their bases welded to the tube. The fins may engage the interior of the shell tube 16.
Patent GB-671062-A (GB)
Title: Improvements relating to rotary-absorbtion dynamometers
IPC: G01L3/20
Filed: 1949-07-11
Abstract: 671,062. Rotary-absorption dynamometers. BRITISH THOMSON-HOUSTON CO., Ltd.. July 11, 1949 [July 10, 1948], No. 18268/49. Class 106 (ii). A rotary-absorption dynamometer in which fluid circulates through passages within a casing 1 has a valve 35c for bleeding controllable quantities of fluid from the dynamometer through radially disposed outlets 33 in the casing 1. Cool make-up fluid is supplied from an external source 30 to a central chamber 19 in a rotor 13 and thence through radial passages 20 in the rotor 13 to the main circulating fluid. The rotor 13 is a dual inlet centrifugal type impeller and the casing 1 has radially and axially extending vanes 25 on its inner surface, these vanes 25 co-operating with fixed annular wall members 27, 28, 29 to form two continuous circulating fluid passages arranged in parallel. The vanes 25 cause the circulating fluid to enter the rotor 13 in an axial direction. The casing comprises two halves having rabbeted flanges forming a fluidtight joint. An annular plate 37 extends around the inner periphery of the joint to protect it from the impact of the fluid discharged from the rotor 13. The casing 1 is cradled in bearings such that the torque experienced by the dyanmometer may be measured. The rotor bearings 12 may have a forced lubrication system with seals preventing the leakage of lubricant to the exterior and interior of the casing 1. The rotor shaft comprises individual parts 15 and 16 secured to the rotor 13.
Patent GB-613313-A (GB)
Title: Improvements in or relating to a windshield cleaner
IPC: B60S1/38
Filed: 1946-06-18
Abstract: 613,313. Windscreen wipers. TRICO' PRODUCTS CORPORATION. June 18,1946, No. 18286. Convention date, June 19, 1945. [Class 138 (i)] [Also in Group XXII] A windscreen wiper blade comprises a channel-shaped holder 16, Figs. 2 and 3, having outwardly extending flanges 17 joined by a longitudinal web 21, an attaching member or fin 11 carried by the holder and having anchoring tongues 22, 23, 24 extending through an opening in the holder and deflected in alternate directions against the underside of the web, and a resilient wiper element 18 clamped between the flanges of the holder, the tongues being clamped between the holder and the element.' The member 11 is seated on the holder by shoulders 26. The wiper blade is assembled by means of a punch with inclined faces (see Group XXII).
Patent GB-834179-A (GB)
Title: Improvements in or relating to stop motions for thread twisting machines
IPC: D01H13/18
Filed: 1958-06-09
Abstract: 834,179. Stop-motion for textile twisting machines. HAMEL, E. June 9, 1958 [Oct. 16, 1957], No. 18301/58. Class 120(2) Each position of the machine has a segmental member 13 between the deliveryrollers 1, 2 and a guide-rod 11 which is maintained in the position shown by the passage of the yarn &c. through an eye 14; when the yarn &c. breaks the segment becomes unbalanced and pivots forwardly to engage the top roller 2 and move it to an inoperative position along the yokes 5. The various segments are mounted on a common bar 12 which can be rotated to bring clamps 16 which fix the positions of the segments on the bar into engagement with the segments to render them inoperative e.g. when the machine is stopping. Each yoke 5 has a recess 8 into which the upper roller can be moved by hand. An additional guide-eye 10 is provided. A further eye 10<SP>1</SP> may be provided to allow alternative yarn-paths through the rollers.
Patent GB-219994-A (GB)
Title: An improved elastic stop for the type-bars of typewriting machines
IPC: B41J7/26
Filed: 1924-07-31
Abstract: 219,994. Devlaminck, R. S. Aug. 3, 1923. [Convention date]. Type-lever machines.-A typelever stop or repulser consists of a spring-supported metal segment or a spring-metal segment arranged near the printing point. The metal segment 1 is provided with pins 5 passing through holes in a support 4 and carrying springs 6 for resisting the typelevers 2. The pins are provided with heads 7 or nuts. The segment may have a facing 3 of leather &c. A modified form of stop consists of a segment which is curved transversely to form a spring and is secured at one edge to the support 4.
Patent GB-111920-A (GB)
Title: Improved Apparatus for Moulding Hollow Articles of Glass or other Material having Projections or Parts in Relief on their Inner Lateral Surfaces.
IPC: C03B11/06
Filed: 1916-12-21
Abstract: 111,920. Marks, E. C. R., (Soc Anon. des Verreries de Fauquez). Dec. 21, 1916. Moulding under pressure.- An apparatus for moulding hollow glass &c. articles having internal projections, for example, a jar lid for attachment by means of exterior screw-threads on the jar neck, comprises a hollow core 1 suspended from a plate 3 by loosely fitting screws 2 so that, when the core has descended into the mould 11 and caused the glass 15 to take the shape shown in the Figure, collars 19 arrest its further descent, but the plate 3 in continuing to descend presses a stem 8 against a pair of loose arms 7, thus causing extremities 5 to move outwards through openings in the walls of the core 1 and produce the desired internal projections 6 in the lid 15. The upward movement of the plate 3 draws in the extremities 5 and raises the core 1 from the mould.
Patent GB-392008-A (GB)
Title: Improvements in and connected with machines for removing the rind and seeds from fruit and shredding the rind for the manufacture of marmalade and other preserves
IPC: A23N4/18
Filed: 1932-06-29
Abstract: 392,008. Cutting fruit. ROWAN, W. W., Prome, Glenpatrick Road, Elderslie, Renfrewshire. June 29, 1932, No. 18336. [Class 5 (i).] A machine for removing the rind and seeds from fruit and shredding the rind for the manufacture of marmalade and other preserves, comprises grooved drums around which are trained a number of stretched coiled-spring belts u forming a conveyer which carries halved fruit AA beneath concave rollers c, h mounted on swinging arms 18, 14, the roller h being ribbed to press the halves against a rotary quartering knife j. The quarters are separated by a spreader plate k after which they are supported and conveyed upon more widely separated coilspring belts W, with the rind uppermost and the pulp projecting through belts. The quarters are then engaged by a roller 3 having longitudinal flutings in its periphery and circumferential grooves to accommodate the belts W and supports 37 which carry a seeder bar 3<11>. The quarters are pressed against the roller 3 by a roller 8 having longitudinal projections 8a and are assisted over the seeder bar by a roller 13 carried on arms 22 on the shaft n of the roller 8, which shaft is the main drive shaft and is driven by fast and loose pulleys o, p. The quarters then proceed to a roller 4 having flutings to receive the pulp and grooves to accommodate the belts W. The quarters are pressed down by a roller 6 and the rind is severed from the pulp by a knife t, having a tail t<1>, Fig. 6, which is spaced from, and conforms with the curvature of, the roller 6. The main body of pulp is removed from the roller 4 by the belts W, whilst small pieces of pulp pass through a clearance space between the knife t and its tail t<1> and drop with the main body into the receptacle DD. The spacing of the rollers 4, 6 is adjusted according to the thickness of the rind. The rind passes over the tail and is partially shredded between the rollers 5, 6, the roller 5 comprising a number of cutting discs 5a equally spaced by interposed smaller discs. The shredding is completed between the roller 5 and an interdigitated roller 7 comprising alternate large and small discs. The fineness of the shredding may be regulated by varying the thickness of the spacing discs.
Patent GB-857082-A (GB)
Title: Improvements in or relating to pulse signal receiving systems
Inventor: MILLER WILLIAM FRANCIS
IPC: H03K3/013
Filed: 1957-06-11
Abstract: 857,082. Frequency descriminators; automatic gain control. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Feb. 21, 1958 [June 11, 1957], No. 18388/57. Class 40(5). [Also in Group XXXVI] In a pulse signal receiving system a pulse responsive circuit arrangement comprises a multivibrator adapted to produce an output pulse each time an input pulse exceeding a threshold value of amplitude is applied thereto, said multivibrator being connected to be triggered to one of its two states of equilibrium by input pulses applied thereto, and having time constant means adapted to return it after each triggering operation to its other state of equilibrium in a period of time less than that between successive input pulses, means for storing the output pulses to produce a stored voltage, means for utilizing said stored voltage to vary the threshold amplitude value in dependence thereon, and additional means for utilizing the stored voltage to control the response of the receiving system. In Fig. 1, negative going input pulses from a pulse signal receiver (not shown) are coupled over diode 2 and capacitance 3 to the grid of triode 4 connected as a multivibrator with triode 5, whose cathode is returned to the slider 8 of a bias potentiometer across the H.T. supply and whose anode is capacitance coupled to pulse output 12 and reversed diode 13 to charge a storage capacitance 14 which is coupled over resistances 15, 16, 18 to the grid of triode 5 and to smoothing capacitance 21 shunted across load resistance 20. A further diode 22 has its cathode earthed and its anode connected to the cathode of diode 13 to provide a D.C. return. Slider 8 is adjusted for multivibrator stability, and a negative pulse exceeding this threshold fires the multivibrator to charge capacitance 14 through diode 13, and the resultant negative voltage thereon is fed back to adjust the threshold level of triode 5. The capacitance voltage builds up to a stable level shunted by resistances 15, 16 to leak away between pulses and thus to follow the input pulse peak amplitude, which is measurable by an electronic voltmeter across resistance 20. This voltage is utilized for automatic gain control of an amplifier preceding terminal 1. In Fig. 2, two circuits A, B as shown in Fig. 1 are fed with high frequency radar pulses from terminal 23 over resonant circuits F1, F2 tuned to adjacent frequencies on either side of the input frequency. The resultant outputs at 19<SP>1</SP>, 19<SP>1</SP> energize control grids of triodes 24, 25 whose anode voltages are compared in polarized relay 28 connecting to blank contact 31 for equality of inputs and to contacts 29 or 30 as either input is greater so that reversing relay 32 controls direction of rotation of motor 33 to vary the input frequency for symmetry at the correct value between F1 and F2, at which the outputs at 19<SP>1</SP>, 19<SP>11</SP> are equal.
Patent GB-111370-A (GB)
Title: Improvements connected with the Application of Taps to Earthen and similar Wares.
IPC: F16K27/12
Filed: 1916-12-27
Abstract: 111,370. Corn, E. R., and Johns & Co., E. Dec. 27, 1916. Lift valves; casings; materials, special.-The taps of earthenware vessels such as lavatory basins, sinks, bidets, and baths have the handle and upstanding casing parts formed wholly of or enclosed in earthenware to facilitate cleaning. The metal interior fitting, comprising a sleeve t, a screw-down valve u, and a bush v, is enclosed within the upstanding portion of the earthenware article, as shown, which is formed with an integral discharge spout c. The earthenware handle d<3> is formed with a depending flange or cup d<4> which turns and slides over the cylindrical earthenware parts c' of the casing. The handle is mounted on the valve stem by a socket connexion and secured by screws, as shown.
Patent GB-1240334-A (GB)
Title: Improvements in or relating to the manufacture of annealed copper strip
Inventor: GAYLARD BERNARD
IPC: C21D9/54
Filed: 1968-04-19
Abstract: 1,240,334. Spools. BRITISH INSULATED CALLENDER'S CABLES Ltd. 18 April, 1969 [19 April, 1968], No. 18550/68. Heading B8M. [Also in Divisions B3 and C7] A spool or bobbin comprises a pair of flanges (not shown) and a hub formed by a split cylindrical metal ring 1 of which the parts on opposite sides of the split are interdigitated by means of a T-shaped projection 3 engaging between limbs 5 which permits contraction or expansion of the ring. A slot 7 is provided for the strip to be wound on the spool and the ring is secured to the flanges at a place or places well removed from the ring joint.
Patent GB-664405-A (GB)
Title: Improvements in or relating to sectional huts and the like
Inventor: RANDOLPH THOMAS GRANVILLE
IPC: E04B1/00
Filed: 1948-07-12
Abstract: 664,405. Sectional huts. UNIT CONSTRUCTION CO., Ltd. July 12, 1949 [July 12, 1948], No. 18695/48. Classes 20 (i) and 20(iv) A substantially circular sectional hut comprises rectangular wall panels 1, Fig. 1 or 15, Fig. 7 and triangular roof panels 2, Fig. 1 or 16, Fig. 6, all of the panels, which may be of aluminium, having side flanges at angles greater than 90 degrees with respect to the panels so that upon assembly adjoining parts of adjacent panels can be secured together in face-to-face abutting relationship whilst on dismantling the panels can be tightly nested for storage &c. In the form shown in Fig. 1 the panels 1 have similar side flanges 5, adjacent panels being secured together by bolts 8 passing through the abutting flanges. The roof panels 2 have similar upturned flanges 10, Fig. 4, abutting flanges being secured together by bolts 11, Fig. 1, and covered by channel section sealing strips 3. The wall panels 1 also have base flanges 6 and inturned flanges at their upper edges which are secured to the roof panels 2 by bolts 9. Wire mats resting on the roof panels may carry insulating material for protection against the sun, and sealing strips may be provided for the wall panel joints. In another plan shown in Fig. 7, the wall panels 15 each have one side flange 17 outturned with a marginal bent portion 20 but the opposite side flange 18 is in-turned through a small angle and is adapted to abut against the inner face of the adjacent panel and is secured thereto by bolts 19 The flange 17 in this form serves as a stiffening member only. The roof panels 16, Fig. 6, have similar side flanges 25 and are disposed with the flanges 25 facing in opposite directions, abutting flanges being secured together by bolts 26. In erecting the hut a temporary support in the form of a telescopic pole having a disc-like platform near its upper end is erected at the centre of the site and after erection of the wall panels, the roof panels are placed with their inner ends resting on the platform and are then secured to the wall panels. Alternatively, each wall panel is secured to a roof panel before being up-ended, the partially erected hut being self-supporting after assembling, e.g. three composite sections.