baber/WOPTO huggingface dataset:
Patent GB-891946-A (GB)
Title: Improvements in the production of polyamides
IPC: C08G69/20
Filed: 1959-11-18
Abstract: A polyamide is made by heating an anhydrous lactam in the presence of a polymerization initiator and a monoacylaminocarboxylic acid ester having the general formula R1-CO-NH-R-COOR11 in which R is an aliphatic, aromatic or hydroaromatic bivalent radical and R1 and R11 are aliphatic, aromatic or heterocyclic radicals. Specified esters are benzoyl-S -aminocaproic acid-benzyl ester, acetyl-o -oenanthic acid-ethyl ester, propionyl-a -amino butyric acid-octyl ester, p-hexahydrotolulyl-S -amino-a -methyl caproic acid-methyl ester and acetyl-p-amino benzoic acid-methyl ester. In the examples, S -caprolactam is polymerized in the presence of sodium-S -caprolactam and:-(1), (4) and (5) benzoyl-S -aminocaproic acid-ethyl ester and (2) acetyl-S -aminocaproic acid-octyl ester.  Example (3) describes the polymerization of o -oenantholactam in the presence of benzoyl-o -aminoenanthic acid-methyl ester and methyl magnesium bromide.
Patent GB-1096418-A (GB)
Title: An aspirator for the cleaning of corn and the like
Inventor: JARREBY KARL AXEL BERTIL
IPC: B07B4/08
Filed: 1965-09-14
Abstract: 1,096,418. Pneumatic separation of solids. SKANDINAVISKA APPARATINDUSTRI A.B. Sept. 14, 1965 [Oct. 1, 1964], No. 39218/ 65. Heading B2H. An apparatus for cleaning granular material, e.g. corn, comprises a cleaner proper 1, Fig. 1, having a tubular housing 12 connected at its upper end to a cyclone separator 5 via the suction side of a fan or blower 23. The cyclone 5 has a built-in fan 6. Mounted at the lower open end of the housing 12 on a vertically adjustable part 15 Fig. 2, is a stationary conical spreader disc 14 on to which the material to be cleaned is fed via a conduit 2. The disc 14 is provided with obliquely directed, pressed-in openings 25, Fig. 10, through which air sucked in at the bottom of the housing 12 is directed in jets towards the wall of the housing in such a way that an helical air stream is produced above the spreading disc as it passes up the housing towards the fan or blower 23. This helical air stream is reinforced by providing the housing on its inside with helical guiding flanges 21. The air jets through the openings 25 hit the granular material sliding down the disc 14 from below and loosen it to facilitate cleaning. As the granular material slides off the edge of spreading disc 14 it is met by the rising air current passing through the annular space 18 which entrains the light foreign bodies towards the cyclone 5 where they are separated from the air. The cleaned material drops into a discharge funnel 9. The end of the conduit 2 is provided with a collar 19 formed with bladelike tongues 19a which force the air stream helically upwards round the conduit 2 and also prevent any valuable material rebounding against the disc 14 to pass directly into the passage 20 and be entrained by the rising air stream. Dampers 3, 24 control the feed of material and the volume of air passing through the apparatus. In a modification, Fig. 4, the spreader disc 14<SP>1</SP> has an internal cavity 27 and the supporting post 15<SP>1</SP> is hollow and is provided with openings 28 via which air, fed through a conduit 29, discharges into the cavity 27. The conduit 29, which may have an air filter mounted therein, is coupled to the pressure side of the fan 6 or 23 or to another source of pressure. The damper 3 may be operatively connected to the fan 6 or 23 so that it should only be open after the fan has started and a pressure built up in the cavity 27 so as to prevent material penetrating therein. In other modifications, the lower edge portion 13 of the housing 12 may be provided with guiding whirl-producing vanes (31), Fig. 6 (not shown), or with pressed-in, air-directing openings (25), Fig. 7 (not shown). A further row of openings may be provided in the housing wall above the openings (25). The air may be supplied to these openings via an annular channel surrounding the lower end of the housing and connected to a source of pressure air.
Patent GB-345661-A (GB)
Title: Improvements in edge-trimming attachments for lawn mowers
IPC: A01G3/06
Filed: 1929-12-23
Abstract: 345,661. Lawn mowers and trimmers. BENNET, W., 337, Armagh Street, FARRAR, A., 170, Madras Street, both in Christchurch, and MacKINNON, P., Sidey Quay, Kaiapoi, both in New Zealand. Dec. 23, 1929, No. 39296. Convention date, Jan. 19. [Class 6 (ii).] An edge-trimming attachment for a lawnmower comprises an axle 1 provided at one end with means for detachably securing it to the frame of the mower so as to extend laterally, a circular cutter 3 rotatably mounted on the axle, and a roller 19 for driving the cutter 3 when the mower is moved along the lawn surface. The axle 1 may be fixed on a slotted plate 5 clamped by a bolt 9 to one of the slotted lugs or brackets 6 carrying the small supporting wheels or roller 7. A heel-piece 11 on the plate 5 fits under the lower edge of the lug 6. The axle 1 may be jointed to the plate 5 to allow of adjustment for sloping lawn edges. The surfaces of the lugs forming the joint may be serrated so as to interlock when clamped together. The cutter 3 may be serrated as shown and may engage with a fixed serrated cutter 15. The cutter 3 is driven directly by the ground roller 19 mounted on a sleeve 20 carrying the cutter. The end of the axle 1 may be squared to receive the fixed cutter 15 which is held in place by a spring 17.
Patent GB-1418083-A (GB)
Title: Logic circuit arrangement using insulated gate field effect transistors
IPC: H03K19/017
Filed: 1973-08-21
Abstract: 1418083 FET logic circuits TOKYO SHIBAURA ELECTRIC CO Ltd 21 Aug 1973 [30 Aug 1972 (3)] 39629/73 Heading H3T A logic circuit comprises a first clock driven FET 105 having a conduction path connected between a supply terminal and an output terminal O 1 , a logic gate L O1 , L O2  including at least two FETs 112, 115 whose conduction paths are series-connected between the output terminal O 1  and a second supply terminal, a third FET 106 having a conduction path connected between the first supply terminal and a junction point 104 of the FETs 112, 115 and clock-driven at the same time as FET 105 and an arrangement 107 for ensuring that no current flows at any time between the first and second supply terminals via the logic gate. In operation, load capacitances C 1 , C 2  are charged via FETs 105, 106 respectively when the latter are rendered conducting by clock pulses #. At the same time an FET 107 is switched off by the clock pulses. Subsequently the clock pulses change level to turn off FETs 105, 106. Then depending on the nature of logic inputs applied to gates L O1 , L O2 , capacitances C 2 , C 1  can discharge via at least some FETs 111-118 to ground level or retain their charge. In the embodiment of Fig. 1 (not shown), the conduction paths of the logic gates is returned to an inverted clock pulse input instead of earth. In the embodiment of Fig. 4, not shown, FETs B12, B22 have applied to their gates, input signals logically combined with clock pulses so that they are turned off whenever the clock pulses appear. Figs. 5-7 are developments from the basic embodiments to obtain a plurality of logical outputs. In the embodiment of Fig. 1 (not shown), current flow between the supply terminals via the logic gate is prevented by applying to terminal 102 a pulse inverted in phase relative to the clock pulses applied to the gates of FETs 105, 106.
Patent GB-1329214-A (GB)
Title: Continuous photographic printing apparatus
IPC: G03F7/24
Filed: 1971-08-24
Abstract: 1329214 Contact printing AMP Inc 24 Aug 1971 [25 Sept 1970] 39755/71 Heading G2A Apparatus for printing a pattern from an endless master film transparency 16 on to a photosensitive layer on one side of a web 1 comprises drive means arranged to feed the web continuously to an exposure section 38, a storage chamber for the master film comprising a pair of racks 44, 46 positioned on one side of the web feed path and movable towards and away from each other, the adjacent sides of the racks having generally parallel fingers 50 spaced longitudinally of the web feed path, the fingers of each rack being offset with respect to those of the other rack and carrying rollers 52 around which the master film is looped and guide and registration,means e.g. sprockets and rollers which guide the master film from the storage chamber into contact with the photo-sensitive layer and maintain them superposed during exposure. The web 1 and endless master film 16 are fed into the exposure section 38 at 68 and 64 respectively, the master film coming into contact with a photo-resist layer on the upper surface of the web after passing round a sprocket 74. The web and film then pass in registration around a resilient roll 78 and glass roll 80 housing a mercury vapour lamp 90. The lamp is  surrounded by two opaque sleeves 86, 88 having elongate slits 81 the registry of the slits defining an exposure aperture the width of which may be adjusted by rotating sleeve 86 relative to sleeve 88. The glass roll also houses two hollow tubes of arcuate cross-section 129, 131 which are supplied with liquid coolant in counterflow. After the upper surface of the web has been exposed the film 16 leaves the section and the lower surface of the web which may also carry a photo-resist layer may be brought into contact with and exposed to a second endless master film 18 in a way similar to that described above for film 16. In the storage chambers for the master films rack 44 is fixed while rack 46 is mounted by sliding bushings 49 on vertical posts 48 thus by sliding rack 46 up and down  the spatial separation of the racks may be altered enabling the accommodation of endless master films of variable length e.g. 6 feet to 50 feet. The invention is described with particular reference to a photo-etching apparatus for making printed circuits in which a metallized web is cleaned, coated with photo-resist, exposed to the master films, as described above, and etched.
Patent GB-932867-A (GB)
Title: Hydraulic straightening press
IPC: B30B15/18
Filed: 1961-11-07
Abstract: 932,867. Straightening. H.-G. EITEL, [trading as EITEL KOMM.-GES.]. Nov. 7, 1961 [Nov. 16, 1960], No. 39786/61. Class 83 (4). An hydraulic straightening press in which a control valve in the hydraulic circuit to the ram is actuated by a member connected to the ram to stop the drive of the ram when the required depth of stroke has been reached, is characterized in that a control member coupled to the valve is articulated to a lever, the portion of which lever lying to one side of the articulation point is coupled to an operating member, whose movement is limited by an adjustable stop whose position determines the stroke of the ram, and the portion lying to the other side is rockable about a pivot slidable against a spring, the lever having a portion, extending beyond this pivot, which is acted on by the said member connected to the ram. In operation, a hand lever 9 is rocked about a transverse axis until an eccentric stop 13 at its end contacts a fixed stop 14. This movement raises a connecting rod 10 and rocks a lever 8 about a pivot 1 1a thus lifting a valve slide 6 in a cylinder 7 to connect a pump 5 to the upper part of a cylinder 4 and cause a ram 3 therein to move down to straighten a workpiece 1. A stop 12, fixed or adjustable on a rod carried by the ram 3 engages the end of the lever 8 towards the end of the stroke of the ram 3 to rock the lever 8 about the pivot 10a of the rod 10 to the lever 8 to depress the pivot 1 1a against a spring, and to lower the valve slide 6 until the upper part of the cylinder 4 is disconnected from the pump 5 and the ram 3 stops. The eccentric 13 may be turned by rotating the lever 9 about its longitudinal axis to adjust the position of the pivot 10a and thus the stroke of the ram 3.
Patent GB-1088004-A (GB)
Title: Telecommunications cable
IPC: H01B13/02
Filed: 1964-10-01
Abstract: 1,088,004. Telecommunications cables. KABELUND METALWERKE GUTEHOFFNUNGSHUTTE A.G. Oct. 1, 1964 [Oct. 3, 1963], No. 39981/64. Heading H1A. In a telecommunications cable in which stranding elements 3 are grouped together to form a bundle 11 and two or more of these bundles are stranded to form a cable, the lay of at least one of these bundles is varied continuously along the length of the bundle repetitively between two limiting values. As shown the stranding elements 3 which may be pairs or quads are drawn off drums 2 mounted on supports 1 through nipples 4 to form the bundles 11. The bundles 11 are stranded together in a stranding head 5 and are fed by a draw-off device 8 through a guide 6 to a drum 9 which with the draw-off device is mounted in a fixed cradle 10. As the guide 6 rotates about the cradle 10 the lay between the stranding head 5 and the nipples 4 is varied by adjusting the position of the nipples 4. Alternatively the lay can be varied by adjusting the frequency of oscillation of perforated discs (Fig. 2, not shown) placed between the nipples (not shown in Fig. 2), and the drums 2.
Patent GB-1179809-A (GB)
Title: Vehicle safety mechanism
Inventor: MARTIN ROBERT LYNN
IPC: B60R21/16
Filed: 1968-08-21
Abstract: 1,179,809. Crash restraint bags. EATON YALE & TOWNE INC. 21 Aug., 1968 [25 Aug., 1967], No. 40051/68. Heading B7B. A crash restraint bag has at least a part with continually open passages through the wall to allow the inflating fluid to exhaust to minimize rebound of an occupant striking the bag. The bag walls may be porous.
Patent GB-1466233-A (GB)
Title: Dyestuff preparations
IPC: C09B67/00
Filed: 1975-10-01
Abstract: 1466233 Solutions of disperse dyes and brighteners in urea compounds BAYER AG 1 Oct 1975 [4 Oct 1974] 40145/75 Headings D1B and D1P Free-flowing, non-dusting preparations comprising one or more disperse dyestuffs (including water-insoluble optical brighteners) in the form of a solid solution in one or more ureas are prepared by dissolving the dyestuff in a melt of one or more ureas at a temperature of above 50‹C followed by cooling and shaping. Preferably 10 to 80% by weight of dyestuff is present, 20 to 90% by weight of ureas, up to 40% of a nonionic or anionic surface active agent and 0 to 40% of other dyeing auxiliaries. The ureas used include urea, methylurea, ethylurea, 2-propylurea, phenylurea, N N'-dimethylurea, N, N-diethylurea, N N'-diacetylurea, N-methyl-N'-phenylurea, N-2-propyl-N'-phenylurea, trimethylurea, N-methyl-N, N'-diphenylurea and N, N'-diethyl-N, N'-diphenylurea. Polyesters and polyamides are dyed with these preparations.
Patent GB-1485403-A (GB)
Title: Process for dyeing textile materials of polyester/cellulose blends
IPC: D06P3/82
Filed: 1974-09-16
Abstract: 1485403 Dyeing polyester-cellulose blends HOECHST AG 16 Sept 1974 [15 Sept 1973] 40286/74 Heading DIB Textile materials comprising polyester-cellulose fibre blends are dyed by padding the material with an aqueous solution of at least one ice-colour coupling component, an alkaline agent and an alkali metal nitrite, optionally drying the material, cross-padding the material with an aqueous solution dispersion or emulsion of a diazotisable amine suitable for ice-colour dyeing and which has a maximum grain size of 0.03 mm containing a thermosolizable disperse dye and an acidic agent at room temperature and then successively allowing or causing formation of the azo dye product on the fibres and fixing the disperse dyestuff by subjecting the material to an elevated temperature. The coupling component is preferably an arylamide of acetoacetic acid, a 2-hydroxynaphthalene-3-carboxylic acid or a heterocyclic o-hydroxy carboxylic acid, and the amines used include nitranilines, aminosulphonic acid amides, amino-nitriles, N-benzoylaminoanilines or diamino diphenyl. The amines may be applied in presence of an anionic, nonionic or cationic dispersing agent and the acidic agents include formic, acetic, glycolic, lactic, gluconic, tartaric or citric acids, monosodium dihydrogen phosphate, sodium hydrogen sulphate or aluminium sulphate. The formation of azo dye is promoted by elevated temperature treatment and the disperse dye is fixed by the thermosol process. The dyeing process may be continuous.
Patent GB-1531560-A (GB)
Title: Methods and apparatus for measuring wheel sets
IPC: G01B7/28
Filed: 1976-09-29
Abstract: 1531560 Determining the reprofiling diameter of a wheel WILHELM HEGENSCHEIDT GmbH 29 Sept 1976 [9 Oct 1975] 40341/76 Heading G1M A method of determining the reprofiling diameter of a wheel of a wheel set 1 to be reprofiled comprises the steps of supporting the wheel set by its axle bearing housings, determining the radial position of the profile to which the wheel is to be reprofiled, and determining the radial position and radius of a surface of the wheel which is concentric with the wheel axis. A wheel set is supported on stands 4, 5 to which its axle bearing housings 3 are clamped, known means being provided to achieve the correct vertical positioning of the wheel set. The wheel set is positioned laterally by devices 7 which pull the housings 3 until sensors 9, 9' produce identical readings. A suitable concentric surface is produced on the inner circumference of each wheel by means of a turning device 10, and a friction drive 13 for rotating the wheel. The radius of the concentric surface is determined by a known friction wheel device 14, and the radial position of the concentric surface is determined from the radial position of device 14. A sensing head 15 is moved into contact with the worst worn part of the running surface of the wheel, and the radial position of the reprofiling profile is determined from the position of head 15. The positions of device 14 and head 15 may be determined mechanically or electronically. The reprofiling radius is the sum of the radius of the concentric surface and the difference between the radial positions of the concentric surface and the reprofiling profile.
Patent GB-946121-A (GB)
Title: Improvements in or relating to couplings
Inventor: WORKMAN JOHN ROBERT
IPC: F16D3/50
Filed: 1960-11-23
Abstract: 946,121. Shaft couplings; universal joints. HUGH J. SCOTT & CO. (BELFAST) Ltd. Sept. 18, 1961 [Nov. 23, 1960], No. 40347/60. Heading F2U. A coupling, for connecting shafts 3, 4 of motor generators, comprises a square or rectangular reinforced rubber coupling bar 17, releasably maintained in registering diametral facial grooves or slots 10, 11 in driving flanges 8, 9 by one or two axially retractable sleeves 13, 14, retained in positions covering the ends of the coupling bar 17 by spring ball detents 15. The flanges 8, 9 are clamped by set screws 12 to body members 6, 7, secured to the shafts by taper lock hubs 5 as described in Specification 592,912 or by splines or keys.
Patent GB-1294735-A (GB)
Title: Segmented friction member for brake or clutch
Inventor: ELY W E
IPC: F16D65/12
Filed: 1970-08-24
Abstract: 1294735 Friction clutches; multi-disc brake details B F GOODRICH CO 24 Aug 1970 [25 Aug 1969] 40630/70 Headings F2E and F2C In a segmented annular friction member for a brake or clutch, one or more of the friction segments consists of an assembly having a pair of friction facing plates with pairs of opposing lugs at one peripheral edge connected by torque links to adjoining friction segments, a centre plate of heat-absorbing material located between the facing plates, a first fastener between the facing plates at a location remote from the torque links and engageable with the centre plate, and a second fastener connecting each pair of opposing lugs and extending through one end of a torque link, the second fasteners serving also, with the first fasteners, to retain the centre plate. As shown, each segment 11 consists of two axially-spaced face sheets 15, e.g. of steel, optionally carrying friction lining material 16 on their outer sides. Each face sheet has a lug 17 extending radially outward from a region near each radially-outer corner. Between two axially-adjacent lugs is riveted a tongue 24 of a channel-shaped torque link 12 for engagement with one of the lugs 13 of a wheel rim 14. A plate of heat absorbing material 23, serving as a heat sink, is shaped to clear the tongues 24 entering a segment, and also to clear radiallyinner connecting rivets 21, 22, (see lower right of Fig. 1, and Fig. 3), so as to be accommodated in a segment. For aircraft brakes, plate 23 may be beryllium; for a brake or clutch with less exacting heat capacity requirements it may be carbon or steel. In Figs. 5, 5a, torque link 12 is replaced by two thinner ones 27, spaced axially, and having between them extensions of the heat-absorbing plate 23, through which extensions the rivets 19 pass. Each flange of each torque link is rabbetted as shown to accommodate the contiguous part of the adjacent lug 17. In the modification of Figs. 4, 4a (not shown), the torque link flanges lie outside the lugs 17. Alternatively the lugs 17 and torque links 12 or 27 may be disposed at the inner periphery of the annular disc assembly 10, to engage radically-outwardly directed lugs of an associated member.
Patent GB-989838-A (GB)
Title: Improvements in or relating to apparatus for measuring inside diameters
IPC: G01B5/12
Filed: 1963-10-15
Abstract: 989, 838. Linear dimension gauges. HOMMELWERKE G.m.b.H. Oct. 15, 1963 [Oct. 30, 1962], No. 40736/63. Heading G1H. Apparatus for measuring the inside diameter of a bore and comprises plates 4a, 4b displaceable along the longitudinal axis of the apparatus, slides 2 coupled to the plates 4a, 4b whereby a diametral displacement of the slides in the bore may be effected, measuring pieces 1 on the slides, a connecting rod 5 coupled to the plates 4a, 4b to displace the same, and means to measure the displacement of the rod. In use, as shown in Fig. 10, the position of rod 5 may be shown on a gauge 8 mounted on a slide movable by means of a micrometer 11. The measuring device may be centred by means of arms 12 on a head 13.