baber/WOPTO huggingface dataset:
Patent GB-384907-A (GB)
Title: A machine for drying up the surfaces of cricket pitches, bowling greens, tennis lawns or similar playing grounds
IPC: E01H1/10
Filed: 1932-05-26
Abstract: 384,907. Land rollers; removing moisture from cricket pitches &c. BROWN, J. P., 207, Huntingfield Road, Putney, London, and EDWARDES, D. M., White croft, West Clandon, near Guildford, Surrey. May 26, 1932, No. 14930. [Class 6 (i).] A machine for removing moisture from cricket pitches, bowling greens, &c. comprises a metal ground roller 1 covered with sponge rubber or other absorbent material 2, and a smaller roller 3 covered with a soft material 4 and pressing on the ground roller, this smaller roller being positively driven by spur, chain, belt or other gearing and being mounted, in a frame pivoted above the axis of the larger roller and provided with a catch and quadrant 6 for securing it in various positions and thus regulating the pressure between the two rollers, and a plate 7 being provided for leading the expressed water into a removable tank 8 mounted on rollers or wheels. A trough 9 connected by a pipe to the tank 8 is provided to take the water when the direction of movement is reversed and the roller 3 is moved to the other side of the main roller 1. The axle of the roller 1 may support an internal ballast tank or other weight.
Patent GB-820615-A (GB)
Title: Improvements in and relating to rectifier circuits
Inventor: CARRICK GORDON AMBROSE
IPC: H02M7/06
Filed: 1955-05-24
Abstract: 820,615. Rectifying. BRITISH THOMSONHOUSTON CO. Ltd. May 24, 1956 [May 24, 1955], No. 141177/.55. Class 38 (2). When current through a germanium or silicon rectifier ceases to pass in the forward direction and the applied potential reverses, the rectifier passes a short pulse of current in the reverse direction. The effect of the inductance of the external circuit is to produce a transient inverse voltage across the rectifier as the pulse current falls to zero. To prevent the deleterious effect of this on the life of the rectifier it may be shunted by a capacitor C<SP>1</SP> 1  or non linear resistor which presents a low impedance to the voltage pulse, but a high value to the normal potential during the forward half-cycle. If the rectifiers are in bridge arrangement the capacitors C 1  may be connected across the rectifiers taken in pairs, on their A.C. sides.
Patent GB-354830-A (GB)
Title: Improvements in or relating to type-composing machines using cast slugs
IPC: B41B11/18
Filed: 1930-05-16
Abstract: 354,830. Type-bar-making machines. McKAY, R., 16, Mossgiel Road, Newlands, Glasgow. May 16, 1930, No. 15062. [Class 100 (iii).] Distributing matrices.-The matrices A, Fig. 3, are provided with one or more fount-distinguishing notches B in either the front or the rear vertical edge, and the distributer-box is furnished with a series of retractable blades or pegs to co-operate therewith. In the arrangement described, six spring plungers 3, Fig. 2, having blades 4 at one end, are arranged to project through the wall of the distributer-box 1. The plungers are advanced or retracted by levers 5, 13 operated by hand-levers which can be held in either of two positions by springs. The plungers may be set automatically by the positioning of a magazine.
Patent GB-1106213-A (GB)
Title: Tris(secondary alkyl)phenols and their use as antioxidants
IPC: C07C39/06
Filed: 1965-04-09
Abstract: Antioxidants for polyolefins have the formula <FORM:1106213/C3/1> where R1 is C1- 3 straight-chain alkyl, R2 is C10- 18 straight-chain alkyl and R1R2CH is C12- 20 alkyl.  Exemplified polyolefins are polyethylene, polypropylene, poly(butene-1) and propylene/butene-1 copolymer.ALSO:Antioxidants for paraffin wax (see Example VIII) have the formula <FORM:1106213/C4-C5/1> wherein R1 is C1- 3 straight-chain alkyl, R2 is C10- 18 straight-chain alkyl and R1R2CH is C12- 20 alkyl.ALSO:The invention comprises compounds of formula <FORM:1106213/C2/1> wherein R1 is C1- 3 straight-chain alkyl, R2 is C10- 18 straight-chain alkyl and R1R2CH is C12- 20 alkyl.  These compounds are prepared by catalytic alkylation of phenol with the appropriate alkene.
Patent GB-163218-A (GB)
Title: Improvements in apparatus for raising water and other liquids
IPC: F04B47/00
Filed: 1920-06-04
Abstract: 163,218. Wilks, A. June 4, 1920. Actuating by weights; rope-actuated pumps; balancing parts; double-acting bucket pumps; mountings.-A well &c. pump comprises a casing, mounted in the well shaft and divided into two cylinders 3 in which buckets 8 are reciprocated, the upstroke being effected by cables 13 and the downstroke by weights 12 attached to the bucket rods 10. A suction air-chamber 4 is provided between the cylinders 3, and two delivery air-chambers 17 may be formed, one on each side of the delivery pipe 5 and communicating therewith at their lower ends. The pumps may deliver directly into the well shaft.
Patent GB-440186-A (GB)
Title: Improvements in and relating to horticultural greenhouses, garden frames and the like
IPC: A01G9/20
Filed: 1934-05-22
Abstract: 440,186. Glasshouses. GROVES, A. L., 230, Dominion Road, Worthing, Sussex. May 22,1934, No. 15157. [Class 20 (i)] A greenhouse or garden frame comprises a framework and independent top and side panels slidably arranged thereon so that different crops may be covered as required. The main frame is built up of cross frames interconnected by longitudinals A, B, C, at the ridge, eaves, and base, respectively, the ridgebar being double-grooved at A<2> to receive the edges of the roof lights F. These roof lights are provided with runner rollers J<2>, and with retaining means K adapted to engage ledges B<2>, Fig. 4, on the eaves-bars, which are further provided with ledges B<3> on which are suspended the side lights G by means of rollers M and brackets L ; stops N on the side lights engage ledges on the base-bars.
Patent GB-233185-A (GB)
Title: Improvements in electrical regulating apparatus
IPC: G05B11/01
Filed: 1924-06-24
Abstract: 233,185. Soc. Alsacienne de Constructions MÚcaniques, and Wasser, L. June 24, 1924. Regulation, automatic. - In a regulator in which a moving coil directly actuates a rheostat and is energized by a current which is a function of the quantity to be regulated, the moving contacts of the rheostat are constituted by rollers, the rolling-surface of which is a helically-wound conducting wire embracing the body of the roller with a certain clearance to provide a deformable rim ensuring a perfect contact. The coil 3 moves in the air-gap of a circular armoured type electromagnet excited by a fixed coil 2 with the current at the pressure to be regulated, the coil 2 being arranged in series or parallel with the coil 3. The latter is under spring or gravity control and is in equilibrium when the pressure has the required value, and, in order to make the pull on it constant at any point in its path for a given voltage, its ampere-turns are of the same order as those of the coil 2, and air gaps 7, 8 are formed. The coil also carries a copper hollow torus for a damping device and is connected to the rheostat by an arm 9 rigid with a plunger 10 moving in a pump chamber. The rheostat is arranged in the exciting circuit of the generator to be regulated and the rollers 18, operating over the studs 15, are secured to axles 20 and formed with a rolling surface comprising a conducting helix 25 of a diameter slightly larger than that of the body 26 of the roller, the ends of the helix being secured in the body or to the axle. With this arrangement unevenness of contact and like disadvantages are compensated for.
Patent GB-1135582-A (GB)
Title: Operating means for high voltage air blast circuit breakers
IPC: H01H33/32
Filed: 1966-04-06
Abstract: 1,135,582. Valves. ALLMANNA SVENSKA ELEKTRISKA A.B. 6 April, 1966 [12 April, 1965 (2)], No. 15238/66. Heading F2V. [Also in Division H2] A valve 1 is normally held closed by an armature 3 attracted to the polepieces 5, 6 of a permanent magnet 4 and a shunting armature 15 is movable to a position in which it shunts the flux through the armature 3 allowing the latter to be released and the valve 1 to be opened under the force of compressed air in a channel 7. The valve is arranged to control the flow of compressed air from channel 7 to the operating device of a high voltage circuit breaker and the shunting armature is operated from the ground through an insulating line 16 arranged to rotate a disc 17 to move a plunger 19 until locking elements 21 drop into a groove 20 therein. This releases the shunting armature 15 to move under a spring 22. When valve member 1 moves upwards it closes off a conduit 9 fed from the ground with compressed air, after line 16 is operated, so that pressure gradually rises until it reaches the same level as that in channel 7; valve member 1 is thus restored under gravity and a spring 24. Air passes through a conduit 25 to reset the locking elements 19-21 and armature 15. The breaker is reclosed by venting conduit 9. A second valve assembly similar to that of Fig. 1, may provide the closing action, conduit 9 being omitted (Fig. 4, not shown). The line 16 may be operated by magnetic holding devices (45, 46) being released electromagnetically (Fig. 5, not shown). The locking device 19-21 may be replaced by a toggle linkage (70, 71) (Figs. 6-8, not shown), tripped by discharging a high voltage capacitor through a coil (75) to repel an aluminium disc (72) and reset by a compressed air cylinder (77). An additional line (81) (Fig. 9, not shown), operable by movement of armature 3 may operate indicating contacts (82) on the ground. In another embodiment (Fig. 10, not shown), the line 16, &c., is replaced by an insulating rod (93) coupled to shunting armature (105) and moved from the ground to release and reset the armature (104). In this case the valve member (98) is released to vent the operating device of the breaker.
Patent GB-1553429-A (GB)
Title: 4-thia-1-azabicyclo(4.2.0)oct-2-ene derivatives
IPC: C07D205/08
Filed: 1976-05-05
Abstract: Compounds of the formula I in which R and E have the meaning stated in Claim 1 are antibiotics which are effective against Gram-positive and Gram-negative bacteria. They are prepared by N-acylation of compounds of the formula II in which R<2> is hydrogen or a carboxyl protective group with compounds of the formula RX' in which X' has the meaning stated in Claim 1, and elimination of any carboxyl protective group present. During the reaction, intermediate protection of the sensitive substituents present in the radical R is also possible. The carboxylic acids of the formula II in which E is bromomethyl are prepared by bromination of compounds of the formula IV-b in which the substituents have the meaning stated in Claim 25 with a compound which provides bromine free radicals in the presence of an initiator which provides free radicals, with subsequent elimination of the amino protective group, or if E in the formula IV-b is a lower alkanoyloxymethyl group, by reaction of a compound of the formula VIII in which the substituents have the meaning stated in Claim 29 with a salt of a lower alkanecarboxylic acid and subsequent elimination of the amino protective group. <IMAGE>
Patent GB-167904-A (GB)
Title: Improvements relating to percussive rock drills and the like
IPC: E21B21/01
Filed: 1920-06-05
Abstract: 167,904. St. Stephens, R. de H., and Ewing, A. June 5, 1920. Percussive drills. - In order to prevent mixing of the air with the clearing water, the axial tube 14 conveying the latter is held in a rubber washer 16 in a recess in the anvil block at the forward end, and at the rear end slides in a packed joint 22. The piston rod 3 is rotated axially on its return stroke by means of grooves 3 engaging the bore of a nut 5 which is free to rotate on the forward stroke by the usual ratchet gear.
Patent GB-240227-A (GB)
Title: Improvements in magnetic compasses
IPC: G01C17/00
Filed: 1924-06-25
Abstract: 240,227. Godsave, G. E., and Alexander, G. H. June 25, 1924. Mariners' compasses.-The bowl 1 of a compass particularly intended for use on aircraft is provided with a domed window 2 which is substantially less than a hemisphere and has concave inner and convex outer surfaces, for the purpose of enabling the card to be read from any view point level with the bowl. The surfaces of the window 2 are parts of concentric spheres, their centre preferably lying at the centre of a spherical bowl or on the axis of a cylindrical bowl; the thickness of the glass is from to ¢ inch. The window has a flat base which is secured below a bezel 3. The diameter of the base of the window is 4 or 5 times the height of the window above the base, and the card or scale is approximately midway between the centre of curvature of the window and its highest point. The whole of the space beneath the window is filled with liquid.
Patent GB-727112-A (GB)
Title: Improvements in or relating to apparatus for making metal strip
Inventor: SCHUMACHER RICHARD MARTIN
IPC: B23D19/06
Filed: 1953-06-03
Abstract: 727,112. Making strip metal. CAINE STEEL CO. June 3, 1953, No. 16323/53. Classes 83(2) and 83(4). Rolling.-In a method of making strip metal a number of strips cut simultaneously from a roll of sheet metal are rolled simultaneously along the edges by pairs of rolls arranged at different heights in overlapping staggered relation so that the strips may be lifted to the corresponding roll pairs without being twisted out of their general path. In one example, sheet metal 14, Fig. 1, from a reel 12 is severed into six strips by a series of circular cutters 26 and the strips are rolled at their edges by six pairs of rolls 46, 48 on vertical axes. The rolls 46, 48, Fig. 3, are freely rotatable in mountings, some of which, 50, 64, are slidable in guides 52 on a table 32 to suit the width of strips and others, 58, of which are slidable on shafts 56 supported above the table 32. The rolled strips are reeled onto a driven reel 72 which may incorporate an overload slip clutch 78 in the drive. Guide rolls 30, 66 which may be driven as by a sprocket 82 and slip clutch 84 are placed on each side of the roll assembly and a brake 22 may be applied to the reel 12. Reels 86 remove trimmings from the edge of the sheet. In order to prevent hardening of the strip at the rolled edges the strip may be heated at the edges before rolling as by burners 91, Fig. 9, or by various arrangements of induction or radiant heating. In a modification, nine strips 121-123, Fig. 6, of differing width cut simultaneously from the same sheet are rolled between pairs of rolls 134 on horizontal axes and having annular projections 139 at their ends to engage and round the edges 146 of the strip. The rolls 134 are mounted between arms 136, Fig. 7, which are slidable on guides 131 and locked in position by screws 145. Bolts 142 engaging lugs 143, 144 on the arms 136 adjust the pressure of the rolls on the strip. Each roll comprises a pair of end discs 138 carrying the projection 139 and having between them a number of discs 141 varied according to the width of strip to be rolled.
Patent GB-1117715-A (GB)
Title: Loop taker for sewing machines
IPC: D05B57/14
Filed: 1967-04-04
Abstract: 1,117,715. Sewing machines. SINGER CO. 4 April, 1967 [7 April, 1966], No. 15369/67. Heading DIG. A sewing machine looptaker comprises a rotary body having an annular rim concentric with the axis of rotation and formed with a loop-seizing beak, a bobbin case having a cylindrical bobbin-receiving portion and a radially-extending flange of part-circular form, said flange being supported on said rim, and a stationary bracket having first means engaging the outer edge of said flange to provide the sole constraint against radial movement of the bobbin case, second means engaging the outer edge of said flange to provide the sole constraint against circular movement of the bobbin case, and third means engaging one side of said flange to provide the sole constraint against axial movement of the bobbin case away from said body. A loop taker body 40, rigid with a driving shaft 26, has an annular rim 44 formed with a loop-seizing beak 45. Rim 44 is also formed, adjacent beak 45, with an external lug 48 provided at its base with a thread-receiving notch 49. The base 41 of body 40 is formed, in the vicinity of beak 45, with a needle-passing slot 50. A bobbin case has a cylindrical portion 61 housing a bobbin 65, and a radial flange which has a circular edge portion 76 supported on rim 44 and also has a straight edge portion 79 disposed on a chord relatively to edge 76. A bracket 90, fixed by screws 95, 96, comprises a lower plate 92 and an upper plate 91. Plate 92 has an arcuate edge portion 98 engaging edge 76 to prevent radial movement of the bobbin case. Plate 91 has an extension 105 with edge portions 107, 108 engaging edge 79 to prevent circular movement of the bobbin case. Plate 91 also engages the upper surface of said radial flange adjacent arcuate edge portions 101, 102 disposed inwardly of edge 76, to prevent axial movement of the bobbin case away from body 40.
Patent GB-564970-A (GB)
Title: Improvements relating to radio components such as variable condensers
IPC: H01G5/06
Filed: 1943-09-20
Abstract: 564,970. Bolts. STRATTON & CO., Ltd., and COX, H. N. Sept. 20, 1943, No. 15380. [Class 89 (i)] [Also in Group XXXVI] Radio compo. nents which are variable by means of screwed part, such as variable condensers, have the movable part supported and resiliently locked by a bracket. In the example, the bracket j is looped so that the part k normally is at a slight angle to the part i, but is forced into parallelism on insertion of the screw g for adjustment of the moving part f of the trimming condenser d, f. The bracket may also be bent so as to be of Y-form with the screw passing through the upper arms of the Y.
Patent GB-947169-A (GB)
Title: Procedures and devices for the balancing of rotating bodies
IPC: G01M1/22
Filed: 1960-05-02
Abstract: 947,169. Measuring dynamic unbalance electrically. W. & T. AVERY Ltd. May 2,1960 [May 14, 1959], No. 15449/60. Heading G1N. Apparatus for determining the magnitude and angular position of the unbalance of a rotor comprises electromagnetic vibration transducers at the bearings, whose outputs are combined with those from a phase-reference generator to give signals indicative of the components of unbalance along alternative axes displaced by 45 degrees, the components being combined electrically to give voltages indicative of the magnitude and phase angle of the resultant unbalance, which are used to control the position of a correcting drill and the depth to which it drills. As shown (Fig. 2a), a test rotor 28 is driven by a motor 23 about a vertical axis together with a phase-reference generator 27. The unbalance signals measured by a transducer 30 are fed to multipliers 52,53 (Fig. 3a) together with sine and cosine signals from generator 27 to establish the values of the perpendicular components of the unbalance N 1 , N 2 , these components being subsequently squared at 58, 59, added together, and the square root found at 62, to be stored as a charge in capacitor 62<SP>1</SP>. After measurement, the charge is removed in unit steps by an interrupter 153, each step causing the correcting drill 41 to be advanced by a predetermined amount, thus producing a hole of the appropriate depth to correct for the measured magnitude of unbalance. The unbalance signals from transducer 30 are also fed to multipliers 84,85 (Fig. 4a) with the sine and cosine signals from generator 27 to repeat the values of the unbalance components N 1 , N 2 . The latter is now inverted at 85b to give 1/N 2 , and multiplied by N 1  at 89 to give N 1 /N 2  corresponding to the tangent of the angle # of the unbalance relative to one set of co-ordinate axes. This signal is stored in a capacitor 92. If the angle # is outside the range 22¢ degrees to 67¢ degrees the value of the N 1 /N 2  signal is too small or too large, and causes operation of a switch 94, whereupon the computation is effected for a set of axes displaced by 45 degrees from the previous axes, giving a different N 1 /N 2  signal, corresponding to the tangent of the angle #<SP>1</SP> relative to the new axes, which is stored in a capacitor 98. The angular position of the drill 41 is correspondingly adjusted by a motor 46 which also drives two sine-cosine resolvers 47 whose rotors are displaced by 45 degrees; giving signals which are formed into a quotient representing tan # and tan #<SP>1</SP>, and the quotient representing an angle between 22¢ degrees and 67¢ degrees is compared with the charge on the appropriate capacitor 92 or 98, any difference being used to energize motor 46 to position the rotors of resolvers 47 and the angular position of drill 41 until the signals are equal. Specifications 744,295 and 789, 376 are referred to.
Patent GB-381134-A (GB)
Title: Improvements in or relating to sound recording or sound reproducing machines
IPC: G11B3/08
Filed: 1932-05-31
Abstract: 381,134. Sound recording and reproducing machines. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Mallina, R. F. ; 310, Riverside Drive, New York, U.S.A.) May 31, 1932, No. 15458. Convention date, Aug. 28, 1931. [Class 40 (ii).] Comprises a stylus feed mechanism for recording and reproducing machines wherein a follower is provided with a plurality of resilient projections or bristles adapted to track a feed groove in a disc or cylindrical rotating member, the movements of the follower being transmitted to the stylus. As applied to a sound-recording machine, Fig. 1, a recorder arm 10 is pivoted for vertical motion at 11 in a supporting member 13 and, for horizontal movements, about a pivot 12. A turntable 15, to which a record blank 16 is secured by a clamping nut 20, is driven through a friction device comprising a cone 18, Fig. 3, secured to a drive shaft 19, and adapted to fit within a conical portion of the turntable hub 17. Concentric with the turntable is a grooved disc 21 with which co-operates a follower 22 attached to an arm 23 which is pivotally secured to the support 13 at 24 so that the stylus is fed across the record blank in sympathy with the movements of the follower. The follower 22 is formed of a number of bristles of various lengths inclined away from the direction of rotation, the diameter of the bristles being not greater than the width of the narrowest groove.
Patent GB-1533534-A (GB)
Title: Method of autogenously bonding a nonwoven polyamide web
IPC: D04H3/14
Filed: 1977-04-14
Abstract: 1533534 Autogeneously spot bonded non- woven fabrics MONSANTO CO 14 April 1977 [15 April 1976 (2)] 15458/77 Heading D1R A nonwoven polyamide continuous or staple filament web takes up, from the vapour state both 0.1 to 20 weight percent of an activating agent, i.e. an agent for bringing about autogeneous bonding, and sufficient water to render the web unbondable by pressing at room temperature and is then bonded by the (preferably simultaneous) application of heat and pressure followed by the removal of the activating agent. The filaments may be monocomponent or bicomponent e.g. side by side or polyester sheath/nylon 66 core. As shown continuous filaments 11 formed by spinerette 12 are attenuated by air nozzle 13 and collected on belt 16 by suction box 17. The web is passed through a chamber 22 through which passes a gas stream containing activating agent (hydrogen chloride or other halide, boron trifluoride, sulphur dioxide, sulphur trioxide or a mixture of chlorine and sulphur dioxide) and water vapour then through chamber 23 through which passes a moist air stream. The web is then passed between rollers 26, 27 at least one of which is heated. Preferably the heated roll is embossed to produce a spot bonded fabric. Numerical details are given.