baber/WOPTO huggingface dataset:
Patent GB-416027-A (GB)
Title: Control gear for electrically driven vehicles
IPC: H02P1/18
Filed: 1933-03-01
Abstract: 416,027. Master control of motors. LEYLAND MOTORS, Ltd., and GARRETT, F. A., Hough Lane, Leyland, Lancashire. March 1, 1933, No. 6274. [Class 38 (iii).] In a control system for an electrically driven vehicle, the line contactors LS1, LS2, and, if desired, one or more resistance contactors R1-R5, are energized from a source B independent of the external supply T +, the re-excitation of contactors R1-R5, operated from the external supply, after an interruption, being prevented. Alternatively, these contactors may be allowed to re-excite but are then provided with time lag or current limiting arrangements. The circuits of the coils of the contactors R1-R5 include the contacts of a self-maintaining relay NV which is energized on the first notch of the controller M and has if the supply should be interrupted during running the relay NV ensures that the contactors R1-R5 do not reclose when the supply is resumed, until the controller has first been moved to the first notch.
Patent GB-349602-A (GB)
Title: Improvements in the manufacture of bonded abrasive articles
Filed: 1930-02-25
Abstract: An abrasive composition is produced by mixing granular material with a water dispersion of rubber, swollen with a solvent which remains in the dispersion, adding, if desired, fillers and sulphur, and drying the mixture until it contains about 7 per cent of volatile constituents.  The final composition may contain 92 parts of abrasive grains, 8 parts of rubber (dry), lead acetate (added as a 10 per cent solution) and sulphur, in quantities equal to 1 per cent and 5-60 per cent of the rubber content respectively, and magnesium oxide (1 per cent of the total mixture).  The rubber dispersion may be prepared by swelling 1 part of rubber with 1-2 parts of benzol, kneading into the mass at about 130 DEG  F. about 15 per cent of a dispersing agent such as bentonite, soap, casein, or glue, adding about 44 per cent of water at about 120 DEG  F., heating to 180 DEG  F. to produce inversion of phase, and adding a further 10 per cent of water.  The dispersion is then cooled and 3 per cent of formaldehyde reckoned on the rubber is added.  The benzol may be replaced by xylol, heavy liquid petroleum fractions, or a mixture of 3 parts of ethylene chloride and 1 part of carbon tetrachloride.  Specification 311,104, [Class 70, Indiarubber &c.], is referred to.ALSO:An abrasive composition is produced by mixing granular material with a water dispersion of rubber, swollen with a solvent which remains in the dispersion, adding, if desired, fillers and sulphur, and drying the mixture until it contains about 7 per cent of volatile constituents. The final composition may contain 92 parts of abrasive grains, 8 parts of rubber (dry), lead acetate (added as a 10 per cent solution) and sulphur in quantities equal to 1 per cent and 5-60 per cent of the rubber content respectively, and magnesium oxide (1 per cent of the total mixture).  The rubber dispersion contains 1 part of rubber with 1-2 parts of benzol xylol, heavy liquid petroleum fractions, or a mixture of 3 parts of ethylene chloride and 1 part of carbon tetrachloride, about 15 per cent of a dispersing agent such as bentonite, soap, casein, or glue, about 55 per cent of water and 3 per cent of formaldehyde reckoned on the rubber.  Specification 311,104, [Class 70, Indiarubber &c.], is referred to.
Patent GB-685277-A (GB)
Title: Improvements in tables
IPC: A47B1/04
Filed: 1951-03-17
Abstract: 685,277. Tables. BRITISH BEDSTEAD & MATTRESS CO., Ltd., and SHIELD, M. H. March 17, 1951, No. 6453/51. Class 52(iii) A table 1 having one or more dropleaves 2 supported by a gate-leg frame 4, has an additional support for the leaf constituted by a second gate-leg frame 9 pivoted to the frame 4 at a point lying on the lengthwise axis of the table when the leaves are extended. Stops 13, 15, each comprising notches in wooden stripshaving inclined leading faces and fixed to the underside of the leaf, are provided for the frames 4, 9 respectively.
Patent GB-456807-A (GB)
Title: Improvements in or relating to display counters
IPC: A47F5/00
Filed: 1936-03-05
Abstract: 456,807. Display-counters. HUNTERS (GLASGOW), Ltd., and HUNTER, R., 26, Oxford Street, Glasgow. March 5, 1936, No. 6643. [Class 116] In a display counter comprising spaced bearers 1 arranged in pairs to leave spaces to accommodate partitions 3 (or the bearers may be grooved to hold the partitions), baseboards 4 resting on the bearers, and transverse partitions 5 supported in holding clips 6 which are adjustable longitudinally of the partitions 3, the holding clips are upset at their lower ends to form lugs 7, Fig. 3, slidable in grooves in the bearers, or to form a channel-section 9, Fig. 7, to engage selected saw cuts in the edges of the base-boards and bearers.
Patent GB-1469522-A (GB)
Title: Trenching frames and trenching devices incorporating such  frames
IPC: E02F5/10
Filed: 1974-03-21
Abstract: 1469522 Trenching frames J J O NEILL 21 March 1974 [10 Feb 1973] 6665/73 Heading E1F A method of laying a pipeline or other structure in a trench includes the steps of; digging a portion of a trench ahead of a mouth of a trenching frame; advancing the trenching frame so that said mouth enters the said portion to the external width and bottom level of the mouth and so that spaced apart elongate trench wall support members of the trenching frame engage and support portions of the sides of the trench to the rear of the mouth; inserting foundation material into the trench to form beneath the frame to the rear of the mouth a bed extending the full width of the bottom of the trench as formed by the mouth; laying a length of pipe or part of a structure on said bed; removing spoil from the mouth; and further advancing the trenching frame. Preferably the frame is drawn forward. A frame for use in said method comprises a pair of elongate, spaced apart trench wall support members 12 having a mouth 13 provided at a front end part thereof, which mouth includes a pair of spaced apart upright wall blades 19, a bottom blade 20 disposed between the lower end parts of the wall blades, a dam 21 at the rear of the mouth 13, an upwardly open middle portion providing a working space, and a rear end part 14 having an opening for accommodating a pipe or structure that has been laid on the foundation material within the working space protected by the support members 12, of which at least portions to the rear of the mouth extend to a lesser, depth than the depth of the mouth so that the foundation material can extend to full width of the bottom of the trench as formed by the mouth. The dam protects the work space from ingress of material from the mouth. Preferably runners are provided at least partially along the wall support members at the level of the lower margins of the portions of lesser depth than the mouth, the runners sliding on the top of the laid foundation material.
Patent GB-1206834-A (GB)
Title: Improvements in or relating to a device for controlling a travelling saw
IPC: H02P5/50
Filed: 1968-02-09
Abstract: 1,206,834. Automatic speed control. SOC. ANON. DES USINES CHAUSSON. Feb.9, 1968 [Feb. 17, 1967], No. 6666/68. Heading G3R. [Also in Division H3] A saw 2, Fig. 1, cutting lengths off a moving strip 1, is arranged to move with the strip during each cutting operation at the same speed as the strip by a motor 6 controlled by a circuit comprising: an alternator 8a connected through a gearbox 9a to means 10 responsive to strip speed, an alternator 8 connected through a gearbox 9 responsive to speed of the motor 6, and a comparison circuit which applies a signal proportional to the difference in alternator speeds to the input of an amplifier 24 controlling the motor 6. The comparison circuit includes: rectifying and smoothing circuits connected to respective alternators and a differential circuit 15; and also a separate circuit 25 including tuned circuits 26, 27 and constituting a phase discriminator for precise comparison of  the speeds. These 'coarse' and 'fine' circuits supply separate inputs of the amplifier 24. An alternative form or discriminator is disclosed Fig. 2, (not shown), and bridge rectifiers (30, 30a) may be used instead of the rectifying circuits 13, 14, the discriminator and the differential circuit in this case being connected in series to the input of the amplifier (24a).
Patent GB-1118033-A (GB)
Title: Improvements relating to resilient support for seats or the like
IPC: A47C31/00
Filed: 1967-02-13
Abstract: 1,118,033. Upholstery. M. HELLER. 13 Feb., 1967, No. 6675/67. Heading A4M. A seat comprises a rigid frame (c or d) across which is secured a plurality of resiliently extensible webbing strips (a) each provided intermediate its ends with a core (b) or spaced cores (b) of substantially inextensible material. The strip (a) may be of rubber, with or without a reinforcing fabric, woven elastic material or plastics. The core (b) may be of duck, leather or plastics and may be formed integrally with the strip (a). Alternatively the cores (b) may be of metal or plastics adhered to one or both opposite faces of the strip. A single core (b) may be common to two mutually inclined strips (a).
Patent GB-898784-A (GB)
Title: Preparation of members of the tetracycline series
IPC: C12P29/00
Filed: 1959-02-26
Abstract: 12a-Hydroxy-tetracyclines are prepared by treating 12a-deoxytetracycline in a nutrient medium containing an assimiliable source of carbon, nitrogen and mineral salts with one or more oxygenating strains of microorganisms of the class Fungi Imperfecti which are members of the order Moniliales, and fermenting under aerobic conditions.  Specified species are Myrothecium roridum, Hormodendrum hordei, Hormodendrum pallidum, Curvularia lanata, Curvularia pallescens and Botrytis cinera. The nutrient media are such as are suitable for the production of tetracycline per se, e.g. (a) corn steep liquor, sucrose and calcium carbonate in water, (b) corn meal, hydrolysed casein, glucose, yeast extract, potassium monohydrogen phosphate and calcium carbonate in water.  The 12a-deoxytetracycline is added to the nutrient medium in a finely divided form, as a suspension in water or as a solution in a water-miscible solvent such as acetone, propylene glycol or dimethylformamide.  Alternatively, the fungus may be grown in the nutrient medium under aerobic conditions, the cells separated from the fermentation medium and the 12a-deoxy-tetracycline added to the cell free filtrate and aeration continued for sufficient time to effect the desired hydroxylation.  The produced tetracycline may be recovered from the reaction mixture by processes in general use for the recovery of tetracycline per se, e.g. extraction with butanol at pH 8.5 to 8.6, concentration of butanol extract and precipitation by means of a nonsolvent such as petroleum ether.  Specifications 775,115, 859,580 and 859,581 are referred to.
Patent GB-1261302-A (GB)
Title: Improvements in or relating to a wiper arrangement for cleaning earth drilling tools
IPC: E21B12/06
Filed: 1970-02-11
Abstract: 1,261,302. Boring earth. DELMAG-VERWALTUNGS G.m.b.H. [trading as DELMAGMASCHINENFABRIK REINHOLD DORNFELD]. 11 Feb., 1970 [28 Feb., 1969], No. 6685/70. Heading E1F. [Also in Division F2] Apparatus for cleaning an auger 12 comprises a tube 5 slidably mounted on a tube 3 connected to a rotary table 2, and at least one wiper blade 6 pivotally mounted on the tube 5 and biassed towards the inside of the tube 3 to engage the auger. As shown a pair of blades 6, 7 are biassed inwardly by a tension spring 9 adjustably connected at each end to a link of a chain 10 connected to a respective blade. The tube 5 is suspended from the table 2 by a chain, rope or hydraulic cylinder. When the blades on the tube 5 are lowered beyond the end of the tube 3 they move inwardly to engage the auger and, on rotation of the auger, to clean it. The end portion of each blade may be shaped to be complementary to the curvature of the auger.
Patent GB-589181-A (GB)
Title: Improvements in or relating to kerf cleaners or gummers for use with coal cutting machines
IPC: E21C35/20
Filed: 1945-03-16
Abstract: 589,181. Coal - cutting machines. BRITISH JEFFREY-DIAMOND, Ltd., and SAVILLE, A. Y. March 16, 1945, No. 6698. [Class 68 (i)] Means for removing cuttings from near the cutter chain of a coal-cutting machine comprise a housing 1 with an opening 19, adapted to receive the cuttings as they are thrown off the cutter chain 2a, and a blade 21, with flaredsides 21a, which oscillates about a rear shaft 25 and pushes the cuttings along a detachable side guard 22 to an outlet. The blade is driven from the coal-cutting machine through a bevel gear 2, Fig. 2, connected by dogs 4 to a shaft 5, driving bevel gears 8, 9, from which, through pinion 12, is driven a crank shaft with a crank pin 27, engaging a trunnion block 28, slidable in a slot 29 in the blade, the drive giving a quick return to the blade. A detachable shutter 30 is provided to prevent passage of cuttings behind the blade 21 ; any dust which passes the blade is discharged through a detachable slotted, or per.- forated guard 31. Specifications 519,955 and 577,298 are referred to.
Patent GB-1107012-A (GB)
Title: Anti-theft device for road vehicles
IPC: B60R25/022
Filed: 1964-02-18
Abstract: 1,107,012. Preventing theft of vehicles. K. ZAIDENER. 2 March, 1965 [18 Feb., 1964], No. 6710/64. Addition to 1,039,980. Heading B7J. A theft-preventing device for a motor vehicle includes a telescopic member 10 consisting of a tube 11 having a hook 13, Fig. 1 (not shown), at one end and a rod 12 sliding within the tube and being provided with a hook 14, Fig. 1 (not shown), the rod having a series of closely spaced recesses 15 formed along one face, any one of which may be engaged by a ball 19, loaded by a helical spring 20, to locate the rod at any length of extension. The ball is located in a lock 16, secured to the tube 11 near its mouth, and a washer 22 interposed between the spring and the wall may be engaged by a rotary cam in the form of a helical member 23 which is connected to a key-operated rotary mechanism 24 of the lock by a bolt 25. A key applied to the lock will turn the member 23, the free end part 23A of which will then engage the washer 22 and lock the ball in a selected recess 15A, thereby preventing relative movement of the tube 11 and rod 12. In use, the hook 13 is placed round a vehicle control pedal and the hook 14 around the vehicle steering wheel, the member 10 being locked in its minimum extension, thereby immobilizing the pedal and steering wheel.
Patent GB-1380524-A (GB)
Title: Commutator
IPC: H02K13/00
Filed: 1973-02-12
Abstract: 1380524 Commutators SIEMENS AG 12 Feb 1973 [12 Feb 1972] 6848/73 Heading H2A A commutator comprises a series of copper segments 1 on a copper-adherent cured melamine resin insulating layer 21 on the outside of a cured phenolic resin insulating layer 22, the elasticity of the phenolic resin being greater than that of the melamine resin and thereby being such as to allow the commutator to be forced on to a rotor shaft without creating stress in the melamine layer. The commutator may be formed by moulding the layers 21, 22 on the inside of a copper tube, and then slicing the tube longitudinally to create the segments 1.
Patent GB-307084-A (GB)
Title: Improvements in sound radiators
IPC: H04R1/40
Filed: 1928-02-10
Abstract: 307,084. Victor Talking Machine Co., (Assignees of Williams. S. T.). Feb. 12, 1927, [Convention date]. Divided on 285,092. Loud-speakers.-A plurality of similar horns having separate inlets associated with separate sources are arranged with their outlets contiguous so as to have substantially no air space between them as in Fig. 3 or with the spaces between the outlets closed by baffles 8 as in Fig. 5. The invention is described with reference to arrangements in which a number of horns are derived from a single horn of given basic design in the manner described in Specification 285,092.
Patent GB-1223312-A (GB)
Title: Fluorescent 1,3-diaryl pyrazole compounds and their use as optical brighteners
IPC: C07D231/12
Filed: 1968-02-13
Abstract: 1,223,312. P.V.C. and polyamide compositions. J. R. GEIGY A.-G. 13 Feb., 1968 [14 Feb., 1967], No. 6919/68. Headings C3P and C3R. [Also in Divisions C2, C5 and D1] Polyamide spinning masses are optically brightened by the addition of 4,4<SP>1 </SP>- bis - [3- phenylpyrazol - 1 - yl] - stilbene - 2,2<SP>1</SP> - disulphonic acid disodium salt and 4,4<SP>1</SP> - bis - [3- phenylpyrazol - 1 - yl] - stilbene. Polyvinylchloride films are optically brightened by the addition of sulphonamides derived from 4,4<SP>1</SP> - bis - [3 - phenylpyrazol - 1 - yl]- stilbene - 2,2<SP>1</SP> - disulphonic acid.
Patent GB-125244-A (GB)
Title: Improvements in and relating to Boring, Drilling and other Machine Tools.
Inventor: CURRAN CHARLES JAMES
IPC: B23B41/12
Filed: 1918-04-26
Abstract: 125,244. Curran, C. J. April 26, 1918. Chucks.-In boring the end of a cartridge, the work e is secured in a socket c, and the circular wall of the cartridge is held by a self-tightening collet. An ejector rod f passes through the headstock band carries an ejector g for removing the work after boring. The rod f is actuated by an arm h on a hand-operated rod k which is provided with an arm v carrying a guide x engaging a fixed rod y.
Patent GB-1080368-A (GB)
Title: Improvements in or relating to moulds for the production of ophthalmic lenses of moulded thermosetting resin
IPC: B29D11/00
Filed: 1965-02-18
Abstract: 1,080,368. Making lens moulds. LENTILLES OPHTHALMIQUES RATIONNELLES S.A. Feb. 18, 1965 [Feb. 21, 1964], No. 7090/65. Heading B5A. Annular joints of plastics material used in association with two glass discs to form a moulding device for making a synthetic resin lens, each joint having the shape of a tore of rectangular section whose inner face carries an annular fin, the upper and lower surfaces of which define annular bearing faces which follow the contour of the moulding faces of the associated discs, are produced by injection moulding in a mould consisting of two half moulds each comprising a block having a cylindrical recess therein housing a removable assembly of a cup containing a dish and a central core engaged in the dish, the rim of each dish being shaped to define the contour of each said annular bearing face, the mould halves being such that, when assembled, an annular moulding cavity for the joint is formed into which plastics material can be injected. As shown, in the upper mould half 20 the assembly is screwed into position and the dish 28 provides an annular bearing surface which follows either the contour of a tore or a sphere and is coaxial with the recess 26. In mould half 21 the dish 56 provides an annular bearing surface 62 which forms part of a sphere and may be inclined with respect to the axis of the recess 53. Locking screws, guide pins and indicia are provided to allow adjustment and setting of the movable parts.
Patent GB-744253-A (GB)
Title: Improvements in or relating to arm chairs
IPC: A47C7/00
Filed: 1953-03-14
Abstract: 744,253. Chair frames. TOOTHILL, Ltd., R. W., and TOOTHILL, R. W. June 8, 1954 [March 14, 1953], No. 7110/53. Class 52(2) The front legs 7 of a chair frame have inwardly projecting ledges 7b to support the side rails 1 of a tubular metal seat base frame secured by bolts 8. Upward extensions 7a of the legs support the front ends of arm rests 12 bolted at their rear ends to the back frame uprights. The seat and back frames are preferably as in Specification 686,555 and are spanned by helical tension springs 5, masking battens 10 being screwed to the outside faces of the seat side rails.
Patent GB-583304-A (GB)
Title: Improvements in and relating to electro-magnetic switches
IPC: H01H50/24
Filed: 1945-03-21
Abstract: 583,304. Electromagnetic switches. STONE & CO., Ltd., J., and COX, H. J. W. March 21, 1945, No. 7117. [Class 38 (v)] The plate-like armature of a contactor is pivoted intermediate of its length but outside the magnetic path and operates with two airgaps in series. Front and back moving contacts 10, 11 are mounted on a frame 7 rigidly secured at 6 to the armature 5 in the manner described in Specification 424,127. The armature 5, pivoted at 29, forms a part of the magnetic system including the core 2 of an electromagnet 1, a yoke 3 and yoke extension 33. The pivot-pin 29 and its hinge-plate 36 are preferably non-magnetic, and non-magnetic shims 5<1>, 33<1> are located in air-gaps 30, 31. The armature is balanced mechanically, rendering it shock and vibration-proof. Stationary contacts 12, 13 and other parts of the switch not directly supported by the yoke 3 are mounted on side frame members 16 secured to the yoke, enabling the switch to be mounted as a unit, for instance, on a panel 21 carrying terminals 23.
Patent GB-492101-A (GB)
Title: Improvements in lighting fittings
IPC: F21V17/00
Filed: 1937-03-11
Abstract: 492,101. Securing reflectors or globes to holders. KAVANAGH, L. R., and BENJAMIN ELECTRIC, Ltd. March 11, 1937, No. 7158. [Class 75 (ii)] In an overhead electric lamp having a main reflector or globe 14 and a supplementary reflector 13 arranged to reduce substantially the transmission of heat and light to the neck portion 10 and of the kind, for example, described in Specification 411,127, the reflector 13 is secured to the neck 10 and is formed with a downturned flange 13b having equally spaced projections 13c which co-operate with similarly spaced projections 15 on the main reflector to support the latter when it is inserted from below into the neck 10 and given a partial rotation to bring the projections into engagement. A stop may be provided to limit the rotation and the two parts are held in the engaged position by a screw 19 which takes into one of a series of depressions 20 in the upper end of the reflector 14.
Patent GB-790962-A (GB)
Title: Improvements relating to steering gear for motor vehicles
IPC: B62D3/08
Filed: 1956-03-07
Abstract: 790,962. Screw-and-nut gearing. DAIMLERBENZ AKT.-GES. March 7, 1956 [March 24, 1955], No. 7187/56. Class 80 (3). In steering gear employing a train of balls 10 between a screw 4 and a nut 7 actuating a steering-arm spindle 2, the root diameter of the screw thread increases from both ends of the screw towards the centre to allow play in the end positions compensating for manufacturing tolerances. The outer diameter of the thread is constant. The increase in root diameter at the centre of the screw is about 0.09 to 0.12 per cent of the root diameter at the ends. A spring- loaded arm 9 on the spindle 2 has a socket receiving a hemispherical pivot 8 directly connected to the nut 7. Reference has been directed by the Comptroller to Specification 760,195.