baber/WOPTO huggingface dataset:
Patent GB-1251576-A (GB)
IPC: H03K17/95
Filed: 1969-09-18
Abstract: 1,251,576. Non-contact-making switches; semi-conductor pulse and switching circuits. SIEMENS A.G. 18 Sept., 1969 [27 Sept., 1968], No. 46158/69. Headings H3B and H3T. [Also in Divisions G1 and G4] In an electric pulse generator or switch, a permanent magnet 10 having a substantially rectangular hysteresis loop and a semi-conductor body 13, e.g. Hall generator or magnetoresistive element, are provided in a magnet circuit, the magnet 10 being charged from one state of remanance to the other by an externally variable magnetic field to produce a corresponding change in the semi-conductor body. The externally variable magnetic field may be provided by a magnet rotating in the vicinity of the magnet 10, Fig. 5 (not shown), or by a magnet which is moved linearly towards the magnet 10, Figs. 6a-6d, or by an electromagnet energized by a sinusoidal voltage, Fig. 8. A biasing magnet (40) may be provided magnetically in parallel with the magnet 10 with, regard to the semi-conductor body 13, and the magnetic coupling between the magnets (40) and 10 may be made either weak, Fig. 10 (not shown), or strong, Figs. 12a and 12b (not shown).
Patent GB-1251741-A (GB)
IPC: F24C15/20
Filed: 1969-04-30
Abstract: 1,251,741. Ventilating kitchens. ELECTROLUX A.B. 30 April, 1969 [14 May, 1968], No. 21963/69. Heading F4V. A cooker hood comprises a casing fixed to a wall 1 and a chamber 10 extendible therefrom and provided with a slot 12 through which air is passed to form an air curtain 13. Air is drawn into the fixed casing through a grease removing filter 6 by a centrifugal fan 7 and is exhausted to a chimney or returned through a removable odour removing filter and a louvre to the room. The chamber 10 communicates with the casing via a box 9 and telescopic tubes and may include another outlet for a horizontal rearwardly directed air curtain. A lamp 35 (or 42, Fig. 10) is provided.
Patent GB-1252166-A (GB)
IPC: C08K5/3437
Filed: 1969-01-02
Abstract: 1,252,166. Monoazo pigments. CIBAGEIGY A.G. 2 Jan., 1969 [3 Jan., 1968; 12 Jan., 1968; 13 Nov., 1968], No. 314/69. Heading C4P. [Also in Division C3] The invention comprises monoazo pigments, free from acidic water-solubilizing groups, of formula wherein R 1  is benzene, R 2  is naphthalene linked to the azo, hydroxy and -CONH- groups in the 1,2,3-positions and R 3  is a benzoxazolone, or benzthiazolone residue bound in the 5- or 6- position or an acridone residue. The pigments are prepared by (a) condensing a carboxylic acid halide R 1 -N=N-R 2 (OH)COHal with an amine R 3 -NH 2  or (b) coupling a diazonium or diazoamino compound of an amine R 1 -NH 2  with an azo component HO-R 2 -CONH-R 3 . The pigments are used to mass-dye lacquers and polymers, in particular polyvinyl chloride (see Division C3) in red, brown and grey shades.
Patent GB-1252756-A (GB)
IPC: B63H23/34
Filed: 1968-03-11
Abstract: 1,252,756. Securing hubs on shafts. P. & O. PILGRIM VALVE Ltd. 12 Feb., 1969 [11 March, 1968], No. 11816/68. Heading F2U. A hub 12 of a marine propeller is secured on a shaft 10 by a separate externally tapered forcefit metallic sleeve 14, with a layer of hardenable or cold-setting synthetic resin composition between the external sleeve surface and the internal hub surface, the sleeve and hub being forced into engagement by axial loading while the composition is setting. As shown an annular stress-relieving gap is formed at one end by oppositely disposed circumferential grooves 18, 24 in the sleeve and hub, the gap being filled with the composition and enclosed by a watertight ring 15 welded to the hub.
Patent GB-1256895-A (GB)
IPC: H01J37/16
Filed: 1968-09-03
Abstract: 1,256,895. Welding by fusion. ROBBINS THORN & CO. Ltd. 2 June, 1969 [3 Sept., 1968], No. 41931/68. Heading B3R. [Also in Division H1] In an electron beam welding apparatus, the electron gun 4 is rigidlymounted externally and independently of the work chamber 1, the two chambers being connected by a flexible fluidtight joint to allow relative displacement such as may occur on evacuation of the work chamber. -In the arrangement shown in Fig. 2 the electron gun is supported by a thick plate 8 provided with an aperture 9 for the beam, and the chamber 1 has an access port 2 in a thick plate 3, the plates 3 and 8 being joined by a bellows 11. The plates 3 and 8 are thick enough to absorb any electrons deflected from the beam and form part of a biological shield which is completed by the lead collars 12 and 13 secured to the plate and provided with interfitting surfaces such as the flange 14 and complementary recess 15. The plate 8 is secured to beams 7 from which the gun is supported independently of the work chamber.
Patent GB-1259511-A (GB)
IPC: E04B1/00
Filed: 1969-01-29
Abstract: 1,259,511. Securing balconies to buildings. S. L. ANDERSSON. 29 Jan., 1969 [30 Jan., 1968; 15 March, 1968], No. 4838/69. Heading E1A. A balcony 3 is secured to a building by being suspended from a bracket 32 bolted to an anchorage 28 which is positioned in the outer wall and in turn bolted to an anchorage 22 embedded in a concrete floor 20, see also Fig. 5 (not shown). For constructional details of the balcony and a modified attachment wherein it is suspended from an anchorage passing through the outer wall and embedded in the inner wall, Figs, 1-4 (not shown), should be referred to.
Patent GB-1266687-A (GB)
IPC: H03M11/20
Filed: 1968-07-19
Abstract: 1,266,687. Keyboard entry calculating machine. BELL PUNCH CO. Ltd. 7 July, 1969 [19 July, 1968], No. 3544/68. Headings G4A and G4H. A digital electric calculating machine has a circuit for generating unique signals for each of ten digit keys and a number of arithmetic function keys. An oscillator 2 feeds a Johnson pulse counter and lengthener 4 which produces repeating trains of lengthened pulses CPO to CP9. These pulse trains are connected to one contact of digit switches 19 to 10 respectively such that if the digit switch is closed the appropriate pulse train is fed, via line 20, to the set input of a bi-stable 40. The bi-stable 40 has a reset input at capacitor C9 connected to the pulse train CP0 and the interaction of these two pulse trains produces a distinct output for each digit on the line HW2. Function switches 24, 26, 28, 36 can send an appropriate pulse train to the set input of a bi-stable 50, having a reset input at capacitor C12, to form unique function outputs along line HW3. The output along line HW3 may be gated to produce trains of pulses wherein each train contains the same number of pulses as the appropriate digit.
Patent GB-1301314-A (GB)
IPC: B21D45/02
Filed: 1970-09-04
Abstract: 1301314 Ejectors; strippers DAYTON PROGRESS CORP 4 Sept 1970 [8 Sept 1969] 42475/70 Heading B3W  An ejector pin 21, spring-urged to project from a punch 14, has a urethane or other resiliently deformable pad 26 mounted, e.g. adhesively, below a head 22 for cushioning engagement with a shoulder 18 in the punch bore 17. A skirt 28 defines with the body of the pad an annular groove 27 in which air is trapped during upward movement of the pin relative to the punch during a punching stroke to be forced downwards during downward movement of the pin relative to the punch during the return stroke to assist ejection and keep the punch bore clear. The groove 27 communicates with the portion 16 of the bore through radial grooves 29 in the lower face of the pad. Openings 19 are provided in the punch wall for insertion of keepers 43 to retain the pin in raised position during grinding of the working faces of the pin and punch. A punch assembly may also include a stripper plate (36), Fig. 5, not shown.
Patent GB-1306227-A (GB)
IPC: G01N35/04
Filed: 1969-05-12
Abstract: 1306227 Escapements CECIL INSTRUMENTS Ltd 12 May 1970 [12 May 1969] 24029/69 Heading F2X In a stepping system for rotating the table of a sample changing equipment an escapement and fluid damper are provided so as to prevent spilling of the samples during stepping due to sudden acceleration and deceleration. The drive shaft 3 has a constant tension spring 5 and the motion is governed by the escapement wheel 10, the stepping of which is controlled by the bar 14, operated from a sample changer in accordance with a pre-set programme. The wheel 10 is driven from 3 through the pawl- and ratchet 8a, 8, and the gear and pinion 9, 13, or shaft 12. The pins 10, 10<SP>1</SP> engage the pallets 14a, 14b on the escapement lever 14. Shaft 3 engages the shaft 7a of the rotary fluid damper 7. To limit the rotation of the table a stop mechanism engages the table after one revolution.
Patent GB-1306943-A (GB)
Title: Method of impeding the growth of plants on nonagricultural soils
IPC: E02D3/00
Filed: 1969-09-16
Abstract: 1306943 Consolidating soil SCHOLTENHONIG RESEARCH NV and T DOLFING 15 Sept 1970 [16 Sept 1969] 45480/69 Heading E1F Non-agricultural soils are treated to a depth of at least one inch with a water-insoluble derivative of a natural or a synthetic high polymeric substance, welting down the soil thoroughly with water and thereafter compacting the soil while still wet so as to impede the growth of plants.
Patent GB-1308053-A (GB)
Title: Connecting conductors to electric fittings
IPC: H01R9/24
Filed: 1969-12-08
Abstract: 1308053 Electric couplings BRITISH INSULATED CALLENDER'S CABLES Ltd 7 Dec 1970 [8 Dec 1969] 59720/69 Heading H2E An adapter for connecting the ends of conductors C to a terminal, e.g. a terminal of a socket outlet, batten lamp holder or switch, comprises a metal block 11 having a through bore 12 for receiving the conductor ends with two independent spaced means for securing them therein, and a spigot 15 for making a connection with a bore in the terminal. The rectangular brass block 11 has two pinch screws 14 each of which secures the ends of two aluminium conductors within the throughbore 12 and the spigot 15 extends parallel to and coplanar with the screws 14. The embodiment shown has a second throughbore 16 with pinch screws 18 for receiving a spur conductor S. The spigot may be integral with the block or screw-threadedly attached thereto. An adapter fitting (Figs. 5-7, not shown) comprises a moulded insulating pattern with three recesses (25, 27) in each of which fits a block connected to its respective conductor ends. The pattern is adapted to be mounted on a surface and receive a socket outlet fitting with three outlet contacts each having a recess which fits over a respective spigot.
Patent GB-1308774-A (GB)
Title: Castors
IPC: B60B33/02
Filed: 1969-05-17
Abstract: 1308774 Castors BRITISH CASTORS Ltd 18 May 1970 [17 May 1969] 25252/69 Heading A4U [Also in Division F2] In a castor the wheel 1 is locked against rolling and swivelling by a braking device which is selflocking in the wheel-locking position and is supported from a part 9 of the attachment member 7 of the castor and which includes a skirt-like braking member 18 and an operating mechanism which moves the member 18 axially to bring an annular locking surface 29 into and out of engagement with the wheel. The part 9 forms a bearing housing, to which the brake unit is secured e.g. by grub screws, so that the initial distance between the brake unit and the wheel is adjustable, and a stem 8, integral with the part 9 is received in a hollow furniture leg and rotatably surrounds a spindle 5 so that the castor is swivellable on the axis 13. The braking member 18 is constrained to axial movement by lugs 20 engaged in grooves 21 in a ring part 16 of a mounting member 15, and has ramped depressions 25 which co-operate with cams 27 on an annular operating member 19 which is rotated by an arm 28, to move the member 18 to wheel-locking position from which it is returned by springs 22. In modifications, the operating member is rotated by a rocking pedal which has projections (37) engaging a pin upstanding from the operating member, the mounting member 15 is formed integrally with the attachment member 7, or operating members of a plurality of braking units, each mounted on one of a set of two or more castors, are connected by rods which are moved lengthwise by operation of one of the operating members or by a separate main operating means in the form of a pedal.
Patent GB-1313029-A (GB)
Title: Convertible motor vehicles
IPC: B62D61/08
Filed: 1971-06-17
Abstract: 1313029 Convertible motor vehicle; tricycles W H KORFF 17 June 1971 28516/71 Headings B7B B7E and B7H In a convertible motor vehicle a forebody frame with two laterally spaced front wheels 30 and steering assembly includes a centreline frame 14 with vertically spaced bolt means 18, 46 for connection to the front of a rear driving section including a two-wheel cycle frame 20 which has its front fork removed. The wheels are supported on plates 120, Fig. 6, which are connected to a front frame member 106 by support links 122, 128 having universal socket assemblies 124, 130 and pivots 126, 132 respectively. Further support links shown schematically in the linkage (32), Fig. 1 (not shown), connect the support links 122, 128 to the front of the forebody section 24. A shock absorber 34 connects links 128, 138 the latter being supported on frame member 106. Steering link 140 which is connected to support plate 120 via pivot 142 is actuated by pivoted lever 146 transverse movement of which is effected through steering wheel rack and pinion assembly 152 operated by steering wheel 156. An instrument panel may be mounted on support bracket 158 and brake and pedal assembly 162 is mounted on pedal support 164 forward of a lower crosspiece 108.
Patent GB-1322709-A (GB)
Title: Transformers
IPC: H01F29/06
Filed: 1969-09-24
Abstract: 1322709 Transformers D F BINNS 24 Sept 1970 [24 Sept 1969] 47043/69 Heading HIT To enable a single or multiphase transformer to take a heavy lagging reactive current closed conducting rings or windings are provided for each phase. These rings may be of heavy section conducting material (copper or aluminium), e.g. of clylindrical form or may be wires of Nb or NbTi alloy or a fibre of No 3  Sw on a suitable base maintained at superconducting temperature. The rings may be gapped the gaps being opened e.g. by moving conducting sections spanning the gaps, or the superconductivity being removed from the rings or from successive rings when the heavy reactive current is not required. According to the Provisional Specification extra magnetizing current may be obtained by opening gaps in the transformer core or by energizing D.C. saturating windings passing through core slots.
Patent GB-1333552-A (GB)
Title: Double rate demand pacemaker
IPC: A61B5/0402
Filed: 1969-10-13
Abstract: 1333552 Transistor astable multivibrators DEVICES Ltd 9 Oct 1970 [13 Oct 1969] 50239/69 Heading H3T [Also in Division A5] A heart pacemaker comprises a pulse generator, such as a relaxation oscillator formed by transistors VT16, VT17 the inherent rate of which is controlled by capacitor C19 discharging through resistors R41, R42 and is higher than natural heartbeat rate, a feedback path connected at one end by lead 3 from the output of the generator and at the other to a rate control point in said generator which path is effective to reduce the output rate of the generator to the natural heartbeat rate, inhibiting means which prevent the generation of pulses when natural heartbeats are detected and the feedback path is operative, and interference detecting means which on detection of electrical interference renders the feedback path inoperative, the generator then running at its inherent rate irrespective of whether the heart is functioning normally or not. Pulses from the oscillator are amplified by transistors VT18, VT19 and applied via limiting transistor VT20 and electrode 2 to the heart. Electrode 2 also receives natural heart signals which are passed along lead 3 and through a circuit 4 to cause transistor VT15 to conduct and charge capacitor C19 which is thereby prevented from discharging sufficiently to trigger a pulse from the generator. If electrical interference is detected by circuit 4 a capacitor C16 is charged to such an extent that a transistor VT13 is caused to conduct and allow all signals in the feedback path to pass to earth and consequently the generator supplies pulses at its inherent rate to the heart.
Patent GB-1340325-A (GB)
Title: Distance measuring apparatus
IPC: B23Q15/22
Filed: 1971-01-05
Abstract: 1340325 Gauging CROWN-WHITWELL Ltd 5 Jan 1971 [2 Feb 1970] 4847/70 Heading B3B A distance measuring apparatus, e.g. for a machine tool movable part, comprises a rotatable drum 1 having a helical groove for receiving a wire 4 which has a free end attached to the movable part; a spring motor 9 to apply a substantially constant torque to the drum 1 tending to rotate the drum in the sense to wind the wire 4 on to the drum; means to measure the rotation of the drum 1; and means to move the drum in the direction of its axis of rotation as the drum rotates to maintain the point at which the wire 4 leaves the drum 1 substantially fixed in space. The drum 1 is mounted on a movable table 6 and has coaxially attached to it a first subsidiary drum 7 which winds on and off a further wire 16 from a second subsidiary drum 15. The spring motor 9 has a shaft 14 drivingly engaged to the drum 15 and carries a worm 18 at its free end. A worm wheel 19, pinion 21 and rack 22 moves the table 6 as the drum 1 rotates. The rotation of drum 1 is measured by providing a disc 23 having two tracks of graduation which are read by a lamp 25, lens 26 and optical sensing device 27 to give a digital electrical output signal. In calibrating the apparatus the diameter of the subsidiary drum 15 may be reduced by machining; the axis of the drum 15 may be made non-parallel with the drums 1 and 7 by pivoting a mounting plate 8 after releasing a screw and slot clamp 12, 13; and cam operated rollers may be provided to progressively deflect the wires 4 and/or 16 as the table 6 is moved (Fig. 4, not shown).
Patent GB-1340398-A (GB)
Title: Stable vinyl acetate n-methylolacrylamide latexes with polyvinyl alcohol
IPC: C08F20/52
Filed: 1971-10-26
Abstract: 1340398 Vinyl acetate/N-methylolacrylamide latexes BORDEN Inc 26 Oct 1971 49599/71 Heading C3P A stable aqueous latex of a vinyl acetate/N- methylolacrylamide copolymer is prepared by adding gradually, to an aqueous medium containing polyvinyl alcohol, a mixture of vinyl acetate and N-methylolacrylamide in a constant ratio and at a rate not exceeding the rate of polymerization, a free radical initiator also being added to the polymerization medium. An anionic surfactant may be included in the aqueous medium and also a seed latex of vinyl acetate polymer or copolymer. The latter may be prepared in situ by polymerizing a portion of the vinyl acetate in the aqueous medium before commencing the gradual addition of the two monomers. In examples the polyvinyl alcohol is at least 91% hydrolysed and the seed latex is prepared from vinyl acetate or vinyl acetate and methyl acrylate. Ammonium persulphate was used as initiator and sodium lauryl sulphate or tetrasodium N - (1,2 - dicarboxyethyl) - N- octadecyl - sulphosuccinamate as surfactants. The resulting latex is used as an adhesive for forming plywood either on its own or using additives such as p-toluenesulphonic acid and phenolformaldehyde resin.
Patent GB-1341899-A (GB)
Title: Method of applying a coating to a steel part
IPC: C25D13/00
Filed: 1971-06-17
Abstract: 1341899 Electro-phoretic coating for steel ROLLS-ROYCE (1971) Ltd 8 June 1972 [17 June 1971] 28369/71 Heading C7B A mixture of Al powder and an organic resin is electro-phoretically applied to a steel part, heated to drive off the organic resin and subsequently impregnated with a temperature resisting material such as potassium silicate. In Example 1 the impregnated coating is stoved for 80 min. at 150C. The temperature resisting coating may be applied as an aqueous solution.
Patent GB-1345207-A (GB)
Title: Ac to dc converter circuits
IPC: G01R19/22
Filed: 1971-07-27
Abstract: 1345207 Transistor detector circuits SOLARTRON ELECTRONIC GROUP Ltd 19 July 1972 [27 July 1971] 35299/71 Heading H3T [Also in Division G1] In order to compensate for non-linearities in rectifying low level signals, an input A.C. signal, e.g. from a probe amplifier 14, Fig. 1, is rectified by the base-emitter junction of a transistor TR1 and the resulting signal is compared in a high-gain differential amplifier 32 with a feedback signal obtained by chopping the D.C. output signal from the differential amplifier 32 by a switch TR3 controlled by an oscillator 42, amplifying 46 and bandpass filtering 50 the chopped signal so as to extract its fundamental frequency (oscillator 42 being tuned by a potentiometer RV4 to the filter frequency during the calibration mode) and rectifying the fundamental component in a second rectifier TR2 matched to the first TR1. Thus the D.C. output voltage from the differential amplifier 32 will vary linearly with the amplitude of an applied A.C. potential and providing the transistors TR1 and TR2 are balanced any non-linearities in the rectifying action of their base-emitter paths will cancel each other. Different forms of filters (e.g. Fig. 2, not shown) may be associated with amplifier 46.
Patent GB-1352851-A (GB)
Title: Cop-winding device
IPC: B65H54/14
Filed: 1970-08-12
Abstract: 1352851 Yarn treatment during cop-winding JAMES F LOW (ENGS) Ltd and D MARR 5 Aug 1971 [12 Aug 1970] 38822/70 Heading D1J Synthetic or asbestos yarn is wound onto a cop in a wet condition by apparatus comprising a supply container 12 (Fig. 3) in which the yarn is stored under water, a guide 14 for receiving the wet yarn, a yarn tensioning device (in housing 25) and a cop forming mechanism. Water may also be applied to the yarn as it is wound onto the cop by rollers 27, 28 (Fig. 4) by means of a fish-tail nozzle 38 spraying the water along the line of contact between one roller and the cop. A further tensioning device 16 or 43 (Figs. 6 and 8, not shown) may be located between the supply container 12 and the guide 14. The cop-forming mechanism comprises a motor-driven spindle 26 on which slides a nose 30 biassed towards the cones 27 and 28 by means of a weight 34 (Fig. 2). The driving motor is stopped when the nose 30 actuates a limit switch 33. Manually or automatically actuated doffing mechanism comprises a cam 35 urging the cones away from the spindle and a yarn severing device.
Patent ID-23878-A (ID)
Inventor: SCHNEIDER ROBERT
IPC: B02C17/22
Filed: 1998-07-07
Abstract: The mill comprises a cylindrical shell (16) lined with an interior lining and intended to contain material to be ground and a charge of grinding implements, in which the lining, which is made up of rings of juxtaposed individual lining plates, has interior longitudinal lifting profiles to encourage the lifting of the charge and of the material to be ground as the mill rotates. In order to adapt the lifting profile to the parameters and conditions in which the mill operates, each plate has, on the rear face, when viewed in the direction in which the mill rotates, a step (10b, 12b, 14b) of a radial height that is taller than the front face, and each ring of plates comprises several different types of plate (10, 12, 14) which differ at least in terms of the radial height of their step (10b, 12b, 14b) and which follow on from one another, in the circumferential direction, in a determined order.