baber/WOPTO huggingface dataset:
Patent GB-694298-A (GB)
Title: Improvements in apparatus for grinding and/or polishing the faces of a ribbon of glass
IPC: B24B7/24
Filed: 1952-04-30
Abstract: 694,298. Grinding and polishing glass. GLACERIES DE LA SAMBRE SOC. ANON. April 30, 1952 [May 16, 1951], No. 10915/52. Class 60. The two faces of a ribbon of glass are ground or polished simultaneously by tools 3, 4 having synchronised drives and mounted on rigidlyconnected supports 1, 2 reciprocated transversely of the glass so that the profiles of the upper and lower tools of each vertical pair remain in alignment during rotation. The tools may be circular, elliptical or of quadrilobate form. A coupling 15, which may be of the claw type, enables the upper and lower sets of tools to be aligned and permits the supports 1, 2, which are inter-connected by supports 5 and conical studs 11, to be separated. A motor 8, reduction gear 9 and connecting rod 10 serve to reciprocate the supports while a second motor 12 rotates the tools through shafts and bevel gearing.
Patent GB-473618-A (GB)
Title: Improved automatic tuning control means for modulated carrier wave receivers
IPC: H03J7/02
Filed: 1936-04-16
Abstract: 473,618. Wireless receiving circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 16, 1936, No. 10991. Convention date, April 16, 1935. [Class 40 (v)] In a radio-receiver having automatic fine tuning control, the said control is rendered inoperative by means responsive to received signal strength, when the latter falls below a predetermined value, the receiver tuning then remaining as it was immediately before the fall in signal strength. The Figure shows a superheterodyne receiver in which the output from the I.F. amplifier 3 is applied to a filter stage 4, whereby the intermediate frequency is stripped of its side-bands and is applied in phase opposition to a pair of differential rectifiers 7, 8. The output of the I.F. amplifier 3 is applied to the rectifiers 7, 8 in phase agreement through transformer T2 and also to an A.V.C. rectifier 19 from the cathode resistance 21 of which A.V.C. potentials are fed to the radio frequency amplifier 1. The output circuit of the rectifiers 7, 8, comprises two resistances 17, 18 in the grid-biassing circuit of a frequency control valve 6, variation in whose anode impedance varies the effect of capacity 15, on the tuning circuit of the local oscillator 5. Departure from exact tune produces a resultant voltage across the resistances 17, 18 thereby varying the grid bias of 6 in compensating sense. If the desired signal fades, the corresponding variation in p.d. across resistance 21 energizes valve 9 thereby opening contacts 11, 12 by relay coil 10 and disconnecting the grid of valve 6. The receiver thus remains at the same effective tuning position till the signal reappears, when the springs S re-close contacts 11, 12. The demodulator and final signal stages are connected to terminals 14. In modifications, the frequency control from valve 6 may be effected by inductive coupling with the oscillator 5 ; or the capacity 15 may be replaced by an inductance, Figs. 1 and 4 (not shown). The relay coil 10 may be connected directly in the cathode return circuit of the A.V.C. valve 19, Fig. 3 (not shown).
Patent GB-679942-A (GB)
Title: Improvements in the construction of trailer caravans
Inventor: CHARLES MAXWELL ROSCOE DE BUIR
IPC: B60P3/32
Filed: 1950-05-04
Abstract: 679,942. Caravan bodies. BERKELEY COACHWORK, Ltd. May 4. 1951 [May 4, 1950: June 19, 1950], Nos. 11062/50 and 15278/50. Class 108(i) A trailer caravan has framework walls which are constructed of horizontal members 1 and vertical members 2, Figs. 2, 3, 9, secured together at 3 in superimposed relationship. Inside and outside panels 5, 6, are mounted on the framework so that each panel only contacts either the horizontal or the vertical members, whereby air may circulate freely in the continuous air space 20 between the inner and outer panels to 'reduce condensation, air vents 7 being provided adjacent the floor 21 to allow air to pass freely in and out of the space. Further air vents 8, Fig. 5, are provided at the upper end of the panels 5 so that air may pass into a continuous pocket 9 in the roof, the supporting transverse beams 12 being provided with apertures 13. The roof is extended at 14, 15, beyond the front and rear walls of the caravan, air inlet or outlet openings 16 preferably covered with filters being provided. A baffle plate 18, Fig. 7 (not shown), controls air flow through a ventilator 19 provided in the rear wall. The door and window frames 4, 4<SP>1</SP>, are constructed of members of width equal to the combined thicknesses of the members 1, 2, so that the space 20 is divided into smaller spaces 20<SP>1</SP>, 20<SP>2</SP>, 20', each having a vent 8 to the roof. If desired a fan (not shown), may be provided. and heat insulating material may be arranged between the framework and the panels.
Patent GB-1519791-A (GB)
Title: Flowboxes
IPC: D21F1/02
Filed: 1976-01-27
Abstract: 1519791 Papermaking ST ANNE'S BOARD MILL CO Ltd 27 Jan 1976 [18 March 1975] 11122/75 Heading D2A A flowbox 130 incorporates an explosion chamber 135 which is supplied by a stock inlet tube 134, the opening of the tube into the chamber being restricted by a baffle 18 across the tube so that the stock can be directed at a required angle. The tube 134 is rotatable about its axis so that the direction of stock discharge 9 may be varied. A plurality of tubes may be provided preferably at right angles to an end wall 16 of the chamber 135 which simplifies the construction when compared with that disclosed in Specification 1179847.
Patent GB-472305-A (GB)
Title: Improvements in or relating to devices for crushing the juices from lemons, oranges and the like
IPC: A47J19/02
Filed: 1937-04-19
Abstract: 472,305. Extracting juice from lemons &c. ALUMINIUMWERKE GOTTINGEN GES. April 19, 1937, No. 11187. Convention date, April 23, 1936. [Class 28 (ii)] A device for squeezing juices from sector-shaped portions of lemons and oranges, comprises an elliptical receptacle a for the fruit portion, the side walls c of which are high enough to support the fruit with its peel upwards, a pouring spout d, a handle e and a presser member g hinged at i to the spout. The receptacle a is formed with a V-shaped recess b to receive the angle of the fruit part, and the handle g has a corresponding projection h. The handles e, f are flanged upwardly, the handle f being housed within the handle e. A supporting foot k is provided. In a modification, the device is made to resemble an aeroplane, the wings being used as handles.
Patent GB-952704-A (GB)
Title: A method for preventing or reducing the diffusion of a gas into a different gas along a shaft seal
IPC: B29C48/03
Filed: 1962-03-23
Abstract: 952,704. Stuffing-box substitutes. ALGEMENE KUNSTZIJDE UNIE N.V. March 23, 1962 [March 27, 1961], No. 11189/62. Heading F2B. Leakage or diffusion of a first gas into a second gas at a different pressure along a rotatable shaft penetrating a wall separating the two bases is counteracted by flushing a chamber provided in the wall and sealed from both gases with a gas different from the first gas and maintained in the chamber at a pressure intermediate the pressures of the first and second gases. The invention is shown applied to the driving shaft 1 of an extruder screw 2 for thermoplastic polymer granules fed through a hopper 3 to a heated barrel 4. Nitrogen is fed under pressure to the screw 2 through an inlet 7 and the shaft is sealed by a lip-type seal 12 and a mechanical seal 16 separated by a chamber through which nitrogen is circulated through inlet and outlet openings 18 and 19 respectively at a pressure less than that of the nitrogen supplied at 7 in order to counteract diffusion of oxygen from the atmosphere in the driving box 8 into the clearance between the barrel 4 and the shaft.
Patent GB-778500-A (GB)
Title: Improvements in or relating to a disc brake for metal working presses and similar machines
Inventor: FRIEDMAN ROBERT GEORGE
IPC: F16D55/00
Filed: 1954-02-18
Abstract: 778,500. Disc brakes. NATIONAL MACHINERY CO. Feb. 18, 1954, No. 11243/55. Divided out of 778,499. Drawings to Specification. Class 103 (1). The drawings are identical with Specification 778,499 and the claims relate to the spring applying means and the fluid-pressure releasing means for the disc brake.
Patent GB-814784-A (GB)
Title: Process of recovering pure aromatic compounds from crude benzol
IPC: C07C15/06
Filed: 1957-04-05
Abstract: Pure aromatic hydrocarbons are recovered from crude benzol such as obtained from coke ovens or gas works or oil gasefying plants or fractions thereof by first hydrofining with hydrogen or hydrogen-containing gas over a sulphur resistant hydrofining catalyst followed, preferably after removal of hydrogen sulphide, by azeotropic distillation with a lower alcohol or ketone or acetonitrile to any of which water may also be added.  The hydrofining may be carried out at 5-50 atmospheres gauge and 200-450 DEG  C. at a space velocity such that the bromine number is reduced from an original 12-50 to less than 10 and preferably less than 1 gram per 100 ccs.  Hydrogen sulphide is removed by boiling and/or washing with alkali or water.  Naphthenes and aliphatic hydrocarbons are then separated by azeotropic distillation either treating the whole product or fractions thereof; for the forerunnings and the benzene fraction acetone is preferred, for the toluene fraction methanol is preferred.  Other azeotrope formers include ethyl alcohol, methyl ethyl ketone and acetonitrile.  If water is added, preferably at least 20 per cent by weight of the organic azeotrope former is used.  When water is used the distillate is allowed to separate into two phases and the aqueous-azeotrope former phase only is refluxed.  The nonaqueous layer may be extracted in 3 to 7 stages with 50-200 per cent by weight of water to recover the azeotrope former, the aqueous solution so obtained can be returned to the fractionating column where excess water will collect in the sump with the aromatic hydrocarbons from which it can be separated and returned to the extraction.
Patent GB-1390772-A (GB)
Title: Oral narcotic composition
IPC: A61K31/485
Filed: 1972-03-10
Abstract: 1390772 Narcotic compositions ENDO LABORATORIES INC 10 March 1972 [7 May 1971] 11319/72 Heading A5B Pharmaceutical compositions comprise: (a) a compound, having substantial narcotic activity both orally and by injection, selected from oxycodone, hydrocodone, codeine, propoxyphene and pentazocine, and salts thereof and, (b) a narcotic antagonist which is substantially less active orally than by injection selected from: (i) naloxone and its pharmaceutically acceptable salts, (ii) N-cyclopropylmethyl-7, 8-dihydro-14-hydroxynormophinone and its salts and, (iii) 21-cyclopropyl-7#-(1- hydroxy-1-methylethyl)-6, 14-endo-ethano-tetrahydrooripavine and its salts, the weight ratio of (a) to (b) being within certain ranges according to the individual compounds used so that substance (b) does not block the narcotic effect of (a) when the composition is administered orally, but does prevent an acute euphoriant effect by (a) when the composition is injected. Other active substances may also be present, e.g. aspirin, phenacetin, caffeine, antihistamines and antispasmodics.
Patent GB-551675-A (GB)
Title: Improvements in and relating to woven fabric for use as packing material and for other purposes
IPC: B65D30/06
Filed: 1941-09-05
Abstract: 551,675. Woven fabrics; packing boxes; camouflage netting. SIMPSON & MUNRO, Ltd., and MUNRO, R. G. A. Sept. 5, 1941, No. 11365. [Class 142 (iv)] [Also in Groups X and XVII] A woven fabric comprises a plied or single yarn warp 1 and a plied or single yarn and rigid material composite weft 2, 3. The rigid weft elements 3 extend the whole width of the fabric and comprise strips of wood, cane, bamboo or fibre board, and the weft and warp yarns may be of jute. The fabric may be used for packing material, or in the construction of wooden-ended crates or for camouflage netting. Piece or soft goods may be wrapped in waterproof paper and then sewn in the woven fabric, and canned goods and other solid articles may be wrapped in hessian or gunny and then covered with the woven fabric. Wooden crates for fresh vegetables and fruits may be made by nailing the fabric to the sides, bottom and top of wooden frames.
Patent GB-200606-A (GB)
Title: Improvements in and relating to clutches
Filed: 1922-04-22
Abstract: 200,606. Last, J., and Accounting & Tabulating Corporation of Great Britain, Ltd. April 22, 1922. Clutches, friction; gearing for stopping and starting machinery.-In clutches of the type in which, on disengagement, the driven shaft is stopped and locked in a predetermined position and means are provided for absorbing the kinetic energy of the moving parts, .a driving-member cooperates with two driven members, one of which is rigid with its shaft while the other is axially movable thereon and is rotatable relatively to a displacer member normally rotating with the shaft but capable of relative movement to actuate the clutch. The device may be applied to a machine for sorting cards perforated in accordance with a given set of data. A driving-pulley a is clutched between discs b<1>, b<2> preferably provided with friction facings c<1>, c<2>. The disc b<1> is adjustably screwed on a member d, which is screwed on and keyed to the driven spindle e, the end of the key f being received on a notch in a plate n secured, together with a locking-plate o and a notched disc i, to the disc b<1> by screws m. The disc b<2> is secured by a set-screw q to a sleeve r on which the pulley a bears. This sleeve slidably engages the disc i by dog teeth s and is rotatably connected by a tongue t and groove u to a member v, which screws on the spindle e and is connected to the member d by a spring 2 under torsion. The part v has a lug w engaging a semicircumferential slot x in the sleeve r and a pair of lugs z engageable by a detent 8. A V-notch in the boss r<1> of the disc b<2> is adapted to receive the point 12 of a spring-pulled catch 10 interconnected by a slotted link 14 with the detent 8. On movement of a hand-lever 3 from a stop 6 to a stop 6<a>, the detent 8 is caused to engage one of the lugs z, so holding the member v stationary, while the driven clutch parts continue to rotate for half a revolution, their energy being gradually absorbed by the spring 2. The screwed spindle e traverses the part v, which withdraws the disc b<2> from engagement, and at the end of the relative motion the point 12 of the catch 10 snaps into its notch, holding the clutch disengaged and the driven parts stationary. On release of the parts 8, 10, the spring 2 puts the clutch into engagement. The detent 8 may be provided with a tail 9 acted on by a timing-cam 15, so that it is actuated at a definite point in the cycle of the machine, the setting-lever 3 being then connected to the detent by a spring.
Patent GB-1291782-A (GB)
Title: Semiconductor device
IPC: G01R31/26
Filed: 1970-03-10
Abstract: 1291782 Semi-conductor devices LICENTIA PATENT - VERWALTUNGS GmbH 10 March 1970 [29 March 1969] 11475/70 Heading H1K An electrode of a semi-conductor device is provided with two mutually insulated electrical leads to permit the contact resistance of the electrode to be measured and thereby to determine the reliability of the device. The power transistor 2 shown is provided with six terminal leads 6-11, connected in pairs via wires 12 to the collector, base and emitter electrodes 3, 4, 5. The transistor 2 is welded to a header 1.
Patent GB-871848-A (GB)
Title: Flexible mountings
Inventor: HUTTON PHILIP CHARLES
IPC: F16F1/387
Filed: 1959-04-06
Abstract: 871,848. Resilient mountings. SILENTBLOC Ltd. March 28, 1960 [April 6, 1959], No. 11623/59. Class 108(3). A flexible mounting comprises a member of rubber or like flexible material having end or outer portions extending between and adhering firmly to rigid mounting members and having intermediate portions attached respectively to the rigid members and which are free to slide over one another in a direction parallel to the surfaces of the rigid member. In examples applied to resilient bushes, tubular rubber sleeves which may be in two parts 3, 4, Fig. 4 are radially compressed between inner and outer members 1, 2 and have intermediate portions 3b, 4b, divided by a layer of lubricant or a sleeve 10 of metal or self lubricating material. In modifications the sleeve 10 may be moulded inside the rubber sleeve. Alternatively the sleeve comprises a pair of rubber rings 14a, 15a Fig. 11 each having axially extending overlapping portions 14b, 15b. Alternatively the sleeve is built up from separate rings 17, 18 Fig. 13 with intermediate concentric cylinders 19, 20 of rubber. In a modification the intermediate portion comprises a helical spring 25, Fig. 15 enclosed between relatively slidable cylindrical metal sleeves 21, 22 having flanged ends 23, 24 to engage the spring. The invention may also be applied to sleeves which are other than circular section such as rectangular. In a substantially different example, discs of rubber 26 Fig. 16 are secured between rigid metal plates 23, 24 the rubber discs have circumferential portions 26a, of greater thickness surrounding a reduced thickness section 26b divided into two relatively slidable portions by a lubricated metal plate 27.
Patent GB-1412038-A (GB)
Title: Automatic anti-lock control system with a pressure modulator
IPC: B60T8/42
Filed: 1973-03-09
Abstract: 1412038 Antilock braking systems TELDIX GmbH 9 March 1973 [11 March 1972] 11649/73 Heading F2F  An antilock control system comprises a modulator 5 including a valve 6 connected between a master cylinder 2 and a wheel brake cylinder 3 and operated by a piston 10 movable between positions respectively allowing opening of valve 6 and closing valve 6 with subsequent increase of the volume of fluid located between the valve and the wheel cylinder, the piston being operated by an electromagnetic device including coil 13 to close the valve and by an electromagnetic device including coil 11 to open the valve, the piston being held in intermediate positions by a bar magnet 15 and soft iron plate 16. In operation, detection of wheel slip by a control unit 12 causes energization of coil 13 whereby the holding force of magnet 15 is overcome and piston 10 moves rightwardly to close the valve. When an acceleration signal occurs, or after a time lapse, unit 12 causes de-energization of coil 13 and magnet 15 becomes effective again to the piston 10 being held in the valve closed position so that the pressure is kept constant. At the end of the reacceleration phase coil 11 is energized and acts on a soft iron core 18 on the end of piston-rod 17 to move piston 10 leftwardly and open the valve. At the same time coil 11 is energized to neutralize the effect of the magnet 15. Coils 11, 13 are de-energized after piston 10 has returned to its initial position being retained in this position by magnet 15 and plate 16. In an alternative construction plate 16 and the poles of magnet 13, 15 are provided with teeth of the same pitch so that the piston may be held in a series of intermediate positions.
Patent GB-1114100-A (GB)
Title: Voltage frequency converter
Inventor: LUTHI WERNER JOSE
IPC: H03K7/06
Filed: 1967-03-13
Abstract: 1,114,100. Voltage-frequency converter. LANDIS & GYR A.G. 13 March, 1967 [25 March, 1966], No. 11702/67. A voltage/frequency converter comprises a capacitor C 4  charged by means of a differential amplifier 1, with a charging current i i , proportional to the voltage E to be converted, and a discharging transistor Q 18 , the differential amplifier 1 having two input transistors Q 1 , Q 2 , in long-tailed pair configuration, transistor Q 1  being supplied with the voltage E and transistor Q 2  being supplied with a voltage U A  generated by the charging current i L  passing through resistor R 2  in the capacitor charging circuit, discharge transistor Q 18  being switched open for discharging capacitor C 4  for a duration t E  equal to the product (R 2  . C 4 ), when a trigger circuit 2 detects that the summed voltage Uc + UA across capacitor C 4  and resistor R 2  has reached a threshold U S . The rate f of the discharge pulses from monostable multivibrator 3 is made proportional to voltage E, irrespective of the discharge time t E , by the choice of t E  such that t E  = R 2  . C 4 . Thus, time T for capacitor voltage U c  and resistor voltage U A  to reach the threshold U S  is given by:- To this must be added the discharge time tE, to give the frequency f as Thus as tE = R 2  . C 4  Voltages proportional to + (E - UA) and - (E - UA) are fed from the two input transistors Q 1 , Q 2  to the bases of respective transistors Q 4 , Q 5  forming a second long-tailed pair. An amplified voltage proportional to (E - U A ) is taken from the collector of transistor Q 5 . Transistors Q 6 , Q 7 , Q 8 , Q 9  form a balanced configuration, such that with E = 0 the collectors of transistors Q 8  and Q 9  are at equivalent potentials and the thereby controlled transistors Q 10  and Q 11  are equally conducting. Departure of E from zero, causes the balance to be upset, such that one of the transistors Q 10 , Q 11  conducts more than the other, and the excess current forms the charge current i L , flowing via diode D 1  for positive E and via diode D 2  for negative E. When E is negative, the charged capacitor is C 5 , which is supplied with its own trigger circuits &c.
Patent GB-1077821-A (GB)
Title: Improvements in fasteners
Inventor: GRIFFITHS ALAN ROGER
IPC: F16L3/127
Filed: 1964-03-19
Abstract: 1,077,821. Releasable fasteners. ITW Ltd. March 18, 1965 [March 19, 1964], No. 11704/ 64. Heading E2B.  A fastener comprises a shank capable of engaging a hole in a panel 26 and a head 4 formed by two separate side portions 6, 8 extending away from the shank and formed with opposed inner surfaces 10, 12 capable of receiving a pipe, rod, cable, or similar elongated member and having each a wing 28, 30 which extends in generally the same direction as the shank from the end portion of the side portion remote from the shank in such a manner that the wings will engage the panel during assembly and will urge together the end portions of the side portions remote from the shank so as to secure the pipe, rod or cable in position between the side portions in a direction transverse to the shank of the fastener. In the construction shown the shank is split from the head end to just short of the tip and is provided with two shoulders 22, 24 facing towards the head which engage the underside of the panel. In a modification the shank is of cruciform shape and is formed with a disc to seal the hole in the panel during use the disc being convex as viewed from the leading end of the shank so that it can be flexed inwards while being forced through the hole and the panel during assembly. The fastener is made of plastics material or metal.
Patent GB-1457584-A (GB)
Title: Method and composition for acidizing wells
IPC: C09K8/74
Filed: 1974-03-15
Abstract: 1457584 Well fluids AMOCO PRODUCTION CO 15 March 1974 11731/74 Heading E1F An acidizing process comprises injecting into an oil bearing formation an aqueous solution of a non-oxidising acid, e.g. hydrochloric, formic, acetic or hydrofluoric acid, and in association with the acid solution a mixture of an unsubstituted octanol, preferably isooctyl alcohol, and at least one alcohol selected from ethanol, the propanols and tertiary butanol, preferably isopropyl alcohol. The preferred amounts of acid and alcohols are 30-76 volume per cent and 70-24 volume per cent respectively. Other conventional additives are exemplified.