baber/WOPTO huggingface dataset:
Patent GB-369742-A (GB)
Title: Improvements in or relating to cigarette packing machinery
IPC: B65B19/10
Filed: 1931-03-18
Abstract: 369,742. Arranging cigarettes for packeting. LEAVER, H. and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. March 18, 1931, No. 8315. [Class 94 (i).] In order to prevent cigarettes from jamming in the mouths of feeding compartments formed by vertical vanes 3, rotating rollers 4 having eccentrically disposed surfaces are disposed at the mouths of the compartments.
Patent GB-1145429-A (GB)
Title: Improvements in double-lift jacquards for looms
IPC: A61K47/20
Filed: 1968-02-21
Abstract: 1,145,429. Double lift open shed Jacquards. SOC. DES MECANIQUES VERDOL. 21 Feb., 1968 [28 Feb., 1967], No. 8329/68. Heading D1E. Both legs 1, 2 of a double hook are acted upon by a control needle 14 which is lightly loaded by a spring 10 so that, at bottom board level, the hook does not vibrate when released by the griffe and which is heavily loaded by the spring 10 at the place where the griffes pass each other so that the descending hook is flexed and is not attached to the rising griffe. The heavy loading may be obtained by mounting the springs 10 in a box 11 which is moved to compress the springs either by a cam or by attaching it to the presser frame 18. The presser frame 18 is raised to allow the endless pattern to advance and is lowered to read. The selected control needles 14 are then pressed to the right to attach them to a griffe 19 or 20. As the rising griffe passes the descending griffe the presser frame 18 and the spring box 11 are moved to the left to flex the previously selected hooks clear of the rising griffe and at fully open shed the hooks are prevented from bouncing off the griffe by fixed blades 21, 22. Selection is then again made and those hooks which are to remain in the open shed are attached to stationary bars 23 and those which are to fall are pressed off the bars 23 by the box 11.
Patent GB-350561-A (GB)
IPC: C09K3/14
Filed: 1930-03-14
Abstract: An abrasive consisting of crystalline a -alumina substantially free from impurities, b -alumina, and voids and having a density of at least 3,97 is obtained by melting impure alumina with carbon to obtain complete reduction of impurities, removing reduction products as well as any alkaline-earth impurities and remelting the purified alumina to form the required crystals.  In carrying out the process, a mixture of calcined bauxite, 1-2 per cent of ferric or ferrous sulphide, and sufficient carbon for reduction of impurities, conversion of the iron sulphide to metal and aluminium sulphide, and for reduction of 2-4 per cent of the alumina to metal or carbide is fused in a tilting furnace.  The solidified slag obtained is exposed to air and moistened to reduce it to powder, which is washed, screened, dried, and passed through a magnetic separator to remove iron.  After calcination to remove residual oxidizable impurities, the powder is fed slowly into an electric furnace and fused under conditions of superheat.  The resulting ingot, due to slow cooling, develops very large crystals and consists substantially of a -alumina.  The dense product having less than 2 per cent of voids is unaffected by heat treatment, has higher strength and impact resistance values, and is highly stable in vitrified bonds.  It may also be used with low-temperature bonds such as shellac or phenolic resins without prior heat treatment.  By remelting the product with about 1 per cent of an alkali metal or compound thereof, or by introducing the latter into the aluminous melt, a porous weak-grained product may be obtained.
Patent GB-456496-A (GB)
Title: Improvements in bodies and spring frames for motor cycles
IPC: B62K3/00
Filed: 1936-03-20
Abstract: 456,496. Bodies and spring frames for motor - cycles. COURTNEY, O. R., 625, West Main Street, Lansing, Michigan, U.S.A. March 20, 1936, No. 8393. [Classes 136 (i) and 136 (iii)] A motor-cycle body consists of a unitary casing for the frame and motor comprising a continuously-rounded upwardly and outwardly extending front portion 3, 5, Figs. 2 and 7, a narrower waist portion 13, and a continuouslyrounded upwardly and outwardly extending rear portion 10, which tapers to a closed rear end 11. A windscreen 6 and a seat 8 are carried by the casing. The waist portion 13 is provided with leg-guards 14. The casing is supported on lower members 15 of the frame, and the front and rear forks are connected respectively to steering-fork and to the main frame by pairs of upper and lower links, with snubbers or resilient shock-absorbers at one or more of the link pivots, a spring being mounted between the top of each movable fork and a projection on the steering fork or main frame. The front wheel 1 is provided with a mudguard 33, Fig. 7, carrying a splash-plate 34. Air enters through a grille 4, passes around the front mudguard and over the splash-plate, around the legguards, through the waist and over the motor, and emerges through the open bottom of the rear of the casing.
Patent GB-540321-A (GB)
Title: Improvements in or relating to apparatus actuated by or controlling fluid under pressure
IPC: H01H33/32
Filed: 1940-05-13
Abstract: 540,321. Fluid-actuated valves. ENGLISH ELECTRIC CO., Ltd., BLANDFORD, A. R., and ROWLAND, F. G. May 13, 1940, No. 8592. [Class 135] A valve device particularly applicable to the control of the compressed air operation of electric switch gear such as air-blast circuit breakers or a combination of such a circuit-breaker with an isolating switch and actuated by the application of fluid pressure to a piston or the like is provided with means whereby fluid pressure is permitted to leak to the back of the piston when the valve is open and so facilitate its closure. In the arrangement shown compressed air from a reservoir 1 passes to an outlet conduit 4 when a valve 2 is opened against the action of a spring 8 by the admission of fluid pressure from the reservoir to the upper side of the piston 7 under the control of the valve (not shown). When the valve 2 is open air leaks through apertures 10, which may be adjustably throttled, to the underside of the piston to build up a pressure to assist the spring 8 in closing the valve 2 when the control valve is operated to connect the control conduit 9 to atmosphere. An auxiliary piston 11 subject to the pressure in the outlet chamber 3, may after a pre-determined interval, act either mechanically or through air pressure or electromagnetic means to actuate the same or a second control valve to initiate the reclosing of the main valve.
Patent GB-609870-A (GB)
Title: Improvements in and relating to spring nuts
IPC: F16B21/20
Filed: 1946-03-20
Abstract: 609,870. Spring nuts and fasteners. UNITED- . CARR FASTENER CORPORATION. March 20, 1946, No. 8643. Convention date, April 4, 1945. [Classes 44 and 89 (i)] A spring nut or fastener that can be engaged with a nail or bolt having a plain, roughened, knurled or threaded shank, by axial pressure, comprises a base 10 that may be of circular or triangular shape and has a portion 12 stamped from it to lie at an angle whilst remaining integral at 13 and having an aperture with a flat 15, parallel to the part 13, to engage the shank 25. The part 12 may be in a portion domed from the base and the base may engage the supporting surface at spaced bearing points only or may be formed with prongs to enable it to be clinched thereto.
Patent GB-556198-A (GB)
Title: Improvements in or relating to devices for treating hair
IPC: A45D7/02
Filed: 1942-06-24
Abstract: 556,198. Hair treating. SHELBY, A. June 24, 1942, No. 8693. Convention date, July 11, 1941. [Class 131] A device for treating, particularly straightening, hair comprises a sectional casing having rollers for applying tension to the tress and having means for heating a liquid to generate vapour. The treating chamber 16 comprises a body portion and a hinged cover 17 provided with rollers 63, 62 respectively between which the tress of hair is adapted to be laid and, on operation, through gearing, of the rollers to be stretched. The casing is mounted on a standard, Fig. 5 which can be raised or lowered by rack and pinion 98, 99 and can be turned in azimuth and in the vertical plane by worm and worm wheel 101 and by sector 105 so as to bring the casing in proper relation to the head of the client. The end of the casing comprises an insulated clamp 22 to grip the root of the tress of hair and the steam or vapour is produced by electric heaters within the casing in conjunction with moistened absorbent material 57 arranged also to absorb the condensate. The heaters which are of the type comprising electrodes mounted in dampened absorbent material are arranged so that any one or all may be switched in or out at will. The hinge of the casing provides means whereby only limited opening is first permitted, the cover having to be slid longitudinally to permit full opening. A vent is provided.
Patent GB-581952-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J25/52
Filed: 1944-05-08
Abstract: 581,952. Magnetrons. WESTERN ELECTRIC CO., Inc. May 8, 1944, No. 8746. Convention date, May 11, 1943. [Class 39 (i)] A magnetron oscillator has a cylindrical anode 11 slotted from one end to form a plurality of segments 12, 13, 14, &c., the segments being conductively connected together at one end by the body of the cylinder. At the other end alternate segments 12, 14, &c. are cut shorter than the others and are conductively joined together by ring 16 which may be cut away to provide clearance for the remaining segments 13, 15, &c. which are conductively connected by a second ring 17. A tuning circuit in the form of a concentric transmission line has conductors 50 and 51 conductively attached to rings 16 and 17 with an adjustable annular tuning member 52 between. The vacuum envelope consisting of portions 37, 38 and 39 is arranged so that the adjustable part of the tuning circuit is outside the vacuum space. The cathode is an axial filament centred by insulating discs 41 and 45 and maintained by spring tension 43 and may be shorter than the anode to limit thermionic emission to the region where the electric field is strongest. In an alternative arrangement, the tuning circuit is a Lecher pair with the wires connected to rings 16, 17 sealed through the envelope and having a short-circuiting movable bridge with suitable adjusting means situated outside the evacuated tube. In another form, the anode segments are connected to the conductors 50 and 51 by means of rods passing through the envelope, the filament cathode being replaced by an indirectly heated one, Fig. 4 (not shown). The systems described constitute half-wave resonators, the anode and tuning circuits being each a quarter-wave-length long at the resonating frequency. By modifying the apparatus as in Fig. 3A the anode may be made to operate as a half-wave resonator, a hollow tubular conductor 54 being attached to ring 16 to produce a capacity loading effect between 54 and the segments 13, 15, &c.
Patent GB-1451546-A (GB)
Title: Signal-distortion correcting systems
IPC: H04L25/06
Filed: 1974-02-27
Abstract: 1451546 Data transmission; distortion correction SIEMENS AG 27 Feb 1974 [21 May 1973] 8767/74 Headings H4P and H3T In a system for correcting signal distortion in a frequency-modulated data system wherein a rectangular binary signal is derived from a corrected demodulated signal, and a distortion correcting signal is formed from a corrected demodulated signal and the rectangular binary signal. The corrected demodulated signal is differentiated to form a signal the zero transitions of which coincide with the extreme values of the corrected demodulated signal and from the corrected demodulated signal and the rectangular binary signal, a difference signal is derived the amplitudes of which during periods in the region of said zero transitions are equal to the amplitude difference between the rectangular binary signal and the corrected demodulated signal, a correcting signal being derived from those signal components of said difference signal which occur during such periods. Data from a source (DQ, Fig. 1, not shown) is F.S.K. modulated and transmitted over a link (ST), which may introduce frequency drifts, to demodulator (DEM). An adder (SU) adjusts the D.C. component to zero by a signal L or in an alternative arrangement (Fig. 2, not shown) L effects frequency adjustment. The detecting circuit comprises a differential circuit, Fig. 5, having RC entry components 3, 5 and a transistor 2, normally operating to provide an output midway between +UB and -UB voltages, working into a push pull amplifier including transistors 6, 7 and a follow up circuit including transistors 8-12. Output signal H gates a field effect transistor 33, Fig. 6, allowing an operational amplifier 30 (producing 180 degree shift between terminals a, c and zero shift between b, c) pulsed output K into an integrator including amplifier 35 having an output L which adjusts D.C. zero level in Fig. 1 or frequency adjustment in (FU) (Fig. 2, not shown). A simplified block diagram of Figs. 5, 6 is given in Fig. 4 (not shown).
Patent GB-401569-A (GB)
Title: Improvements in and relating to means for investigating the balance of rotating bodies
IPC: G01M1/22
Filed: 1933-03-23
Abstract: 401,569. Testing balance of rotary apparatus. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) March 23, 1933, No. 8795. Convention date, March 24, 1932. [Class 106 (ii).] In a method of investigating the balance of rotating bodies employing potential producing vibration responsive devices, the magnitude and phase of the out-of-balance forces are determined directly by a dynamometer instrument e.g. a wattmeter, one coil of which is fed by current produced by the vibration responsive device, while the other coil is supplied by a generator driven by the rotating body. As shown in Fig. 1, a piezo-electric crystal 4 takes up the forces of the rotating body 1 and generates a voltage which supplies, through an amplifier 6, one coil 7 of a wattmeter. The other coil 8 is supplied from a synchronous generator 2, the stator of which is adjustable. By adjusting the stator, the wattmeter gives a maximum deflection which in conjunction with the calibration curve of the arrangement determines the amplitude of the out-of -balance force. The phase of the force is determined by the amount of rotation of the stator. Fig. 8 shows a modification which renders the reading independent of the characteristics of the amplifier 6. The crystal 4 is connected in parallel with a condenser 10 connected to the tapping point c of a potentiometer a, b supplied by the generator 2. To investigate the forces of the body 1, the contact c is placed at the end a of the potentiometer and the stator of the generator 2 is adjusted to obtain maximum wattmeter reading in the manner previously described. The contact c is then adjusted until the wattmeter reads zero. The magnitude of the force being then derived from the ratio ac /ab. In a further modification, which renders the test independent of the amplifier characteristics an additional crystal is connected with reverse polarity in parallel with the crystal 4. The crystal is subjected to electromagnetic or mechanical force under the control of a variable potentiometer supplied from the generator 2.
Patent GB-961882-A (GB)
Title: Improvements relating to apparatus for testing electrical circuit breakers
Inventor: REECE MICHAEL PETER
IPC: G01R31/333
Filed: 1962-03-07
Abstract: 961,882. Testing circuit breakers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 19, 1963 [March 7, 1962], No. 8815/62. Heading G1U. Apparatus testing an electrical circuit breaker comprises a first circuit supplying a large low voltage current to the test breaker over an auxiliary breaker; a second circuit supplying a small additional test current to the test breaker followed by a restriking voltage when the auxiliary breaker is open, and means for injecting a re-igniting current pulse into the test breaker immediately before at least one zero value of the test current on interruption thereof in order to change rapidly the polarity of such current and maintain the test breaker arc. For testing a circuit breaker TCB, a voltage source V1 is connected in series with a stopper coil SC and an auxiliary circuit breaker ACB supplying a main low voltage test current to breaker TCB whose break time exceeds one half cycle of test current. A voltage source Y2 is switchably connected to charge capacitor C2 which is dischargeable over spark gap G1 and inductance L into capacitor C1. The latter is dischargeable over isolator I1 into breaker TCB to supply a small additional test current to the gap followed by a restriking voltage. An auxiliary circuit producing a re-igniting current pulse comprises capacitor C3 chargeable from source P1 and connectible over isolation gap G2, resistor R1 shunted by capacitor C6 and, triggered gap TG1 to discharge into ACB and TCB, the pulse maintaining the arc at TCB at each half cycle and being excluded from V1 by SC. An inductance L2 in series with TCB is associated with a further auxiliary circuit comprising capacitor C4 chargeable from source P2 and in series with spark gap G3 and triggered spark gap TG2, to discharge into TCB1 producing a further sharply peaked re-igniting current pulse assisting that derived from C3. TG1, TG2 are triggered from the secondaries of ferrite cored current transformers F1, F2 whose primaries are the test current conductor and a conductor carrying a further current derived from V1 over resistance R3 and leading the test current by 90 degrees. At a critical value of test current approaching zero of each half cycle the test current and the further current will cancel, and secondary pulses will trigger TG1, TG2 at an instant determined by R3. The test current rapidly traverses zero, and the arc is maintained at the gap of TCB, while isolator I1 opens before application of each re-igniting pulse and closes during the half cycle preceding application of the restriking voltage and small additional test current from C2, by triggering gap G1 A further relay circuit controls the application of triggering pulses to TG1, TG2 so that the re-igniting pulse is applied only when required. A cathode ray oscillograph may be connected across resistance R4 in series with the gap of TCB.
Patent GB-737207-A (GB)
Title: Improvements in or relating to the pneumatic conveying and separating of loose granular material
IPC: B65G53/60
Filed: 1953-03-31
Abstract: 737,207. Pneumatic separation. MIAG VERTRIEBSGES. March 31, 1953 [March 31, 1952 ; Nov. 13, 1952], No. 8821/53. Addition to 713,349. Class 117. The material separated out at the enlarged section 11 of the main air stream of the parent Specification and collected in chamber 12 is subjected to a further pneumatic separation in an auxiliary air stream provided in a secondary tube 30. This air stream is drawn from the adjustable inlets 35 and from the duct 7, connecting the first coarse fraction space 23 and the outlet duct 5, through a lateral tube 37 provided with an adjustable throttle 36. Separation at the enlarged section 11 is facilitated by the inverted bowl-shaped structure 31 at the top of the main tube 1 and the separated material in chamber 12 passes down the outlet pipe 13 and through a flap valve 32 into the auxiliary air stream. The fine fraction removed by the latter passes the inspection window 38 in tube 30 and an adjustable throttle 39 into the main air outlet duct 5, while the coarse fraction is withdrawn from the sluice valve 33 at the bottom of tube 30.
Patent GB-973347-A (GB)
Title: A non-reciprocal electromagnetic wave transmission device
IPC: H01P1/32
Filed: 1961-03-10
Abstract: 973,347. Non-reciprocal transmission devices. RAYTHEON CO. March 10, 1961 [March 21, 1960], No. 8865/61. Heading H1W. In order to obtain non-reciprocal attenuation or phase-shift, a polarized ferrite element is situated on the axis of a bend in a transmission line. The two-conductor transmission line 5, 6 of Fig. 2 is bent through 180 degrees and a disc 8 of ferrite arranged with its axis coincident with the axis of the bend. If the radius of the bend is #/2 (# is the R.F. wavelength), the magnetic R.F. field, denoted by arrows 10, will rotate about the centre of the ferrite disc at a rate 2#f radians/sec. Thus, by provision of an axial polarizing field H 0  of suitable strength, it is possible to create conditions for gyromagnetic resonance absorption or to modify the permeability of the disc, both these effects being non-reciprocal as regards R.F. energy propagated in two opposite directions. The same principle may be applied to strip lines and "sandwich" lines. The four-conductor line of Fig. 8 uses two conductive planes 25, 26 enclosing a pair of bent strip conductors 27, 28 separated by a dielectric sheet 29. Two polarized ferrite discs 30, 31 are situated within the bends between the strip and planar conductors. In the modification of Fig. 9, R.F. energy is propagated in the gap between protuberances 34, 35 on conductive plates 32, 33. A ferrite disc 36 is situated within a bend of the " gap " line. The surface-wave transmission line of Fig. 10 consists of a conductive core with a dielectric covering. Polarized ferrite discs 39, 40 are situated on either side of a bend in the line. In Fig. 11, the transmission line is in the form of a coaxial line of rectangular section. The line is bent through 180 degrees, the two limbs of the bend being separated by a partition 42. Two ferrite discs 22, 23 are situated within the bend on either side of the central conductor. A number of non-reciprocal attenuators or phase-shifters may be connected in tandem in the same transmission line and grouped together in a stack between the poles of a permanent magnet or an adjustable electromagnet. If the devices are resonant at different frequencies, a broad-band effect may be obtained.