baber/WOPTO huggingface dataset:
Patent GB-1314547-A (GB)
Title: Connecting rod for a crank drive mechanism
IPC: F04B53/14
Filed: 1970-06-26
Abstract: 1314547 Connecting rods; crossheads MASCHINENFABRIK BURCKHARDT AG 26 June 1970 [27 June 1969] 31181/70 Heading F2T A connecting rod for a compressor or pump and subjected to alternate compressive and tensile stress during operation comprises a central portion 2, Fig. 6, connecting crank and and crosshead bearings, and prestressing means 18, 23 to subject the rod to a compressive stress which at least partly cancels the operational tensile stress. As shown, the central portion 2 is compressed between end caps 5, 9 by bolts 18, 23 and the crosshead pin 39 pivots in a block 37  rigidly secured between members 34, 35 of the crosshead 33 operative with pistons 31. The rod may be divided into two as shown in Fig. 4 with the bearings at the crank end either interconnected by webs 8 or formed as one by joining them together. The invention permits the use of grey cast iron or cast steel for the central portion.
Patent GB-341427-A (GB)
Title: Potato digger
IPC: A01D17/18
Filed: 1929-10-14
Abstract: 341,427. Potato-diggers. CLARKE, T. W. H., Denmark House, Ely, Cambridgeshire. Oct. 14, 1929, No. 31191. [Class 6 (iii).] In a potato-digger, comprising a share 6 and rotary-lifter 1 with rearwardly extending tines 8, a guard 9 is arranged, closely adjacent the rising side of the lifter, together with a disc wheel 7, which may be inclined to the vertical, adjacent the share 6. The guard 9 is separate from the share and extends to or beyond the middle horizontal plane of the lifter. The lifter -is driven by bevel wheels 4, 3, the latter being attached to the land wheel or wheels 2. The fingers of the lifter may be attached to a removable ring, and the lifter is itself capable of being raised for transport, when not in use. The digger may be adapted to deliver the potatoes directly into sacks.
Patent GB-1500562-A (GB)
Title: Phosphoric acid azo dyestuffs
IPC: C09B62/028
Filed: 1976-04-14
Abstract: 1500562 Phosphoric acid reactive azo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 14 April 1976 [25 July 1975] 31194/75 Heading C4P Novel mono azo dyestuffs in the acid form, have the formula wherein A is an aromatic radical free from azo groups, but containing at least one -PO(OH) 2  group, R is H or C 1-4  alkyl which may be substituted, and Q is a pyrimidine or s-triazine radical of the formula wherein R<SP>1</SP> and R<SP>2</SP> independently stand for F, Cl, Br or a substituent connected through an O, S or N atom, and R<SP>3</SP> is F, Cl, Br or a lower alkyl, carboxylic acid, cyano or esterified carboxylic acid group. The dyes are prepared by reacting the appropriate monoazo compound with a suitable s-triazine or pyrimidine compound. The dyes may be used for the colouration of textiles which can be dyed by dyes solubilized by anionic groups, e.g. polyamides such as wool, silk, polyhexamethylene adipamide and polycaproimide, and more especially celluloses such as cotton, linen and viscose rayon; in the case of celluloses they are preferably fixed by application from aqueous acidic solution and baking at 95-230‹ C. in the presence of a carbodiimide. They are particularly suitable for application to mixed fabrics of cellulose and synthetics (e.g. polyesters) together with disperse dyes from a single dyebath or printing paste.
Patent GB-1503558-A (GB)
Title: Wide-band miniaturized antenna
IPC: H01Q13/00
Filed: 1975-07-25
Abstract: 1503558 Aerials LIGNES TELEGRAPHIQUES ET TELEPHONIQUES 25 July 1975 [1 Aug 1974] 31293/75 Heading H4A A miniaturized, wide-band discone-type aerial structure comprises a disc form portion and a second portion formed like a skirt, a coaxial feeder being respectively connected by its inner and outer conductors to the disc form and skirt portions of the aerial. The disc form portion 1 comprises a conductive path formed by a circular circumferential portion 10 and one of its diameters 11 to the centre of the latter of which at 3 is connected the central feeder conductor. The skirt portion 2 has a conductive path comprising a circumferential portion 24 situated in a plane parallel to the plane including the first portion 1 and connected to one end of each of a plurality of conductive strands 21 each forming lines bent in zig-zag fashion and inscribed in isosceles trapezia 22 forming an assembly defining the faces of a frusto-pyramid, and an annular and conical end part 25 connected to the outer feed conductor 4 and connected to each of the other end of each of said strands 21. The uppermost portion of each zig-zag element 22 is bent out of the plane of its trapezium (Fig. 1d) so that it approaches end part 25 at the angle b which the outer surface and axial direction subtend at the apex thereof. The conductors are made of wire, and the length of the zig-zag portion is chosen to be resonant at 75% of the lower limit of the chosen frequency bandwidth of the aerial, which is for example 225-400 MHz, and the gauge of wire is chosen to enable equiangular bends 23, Fig. 1c, to be made in the wire portion 22. The diameter of disc 1 is chosen to be 95% of the circular skirt base conductor 24 which may be inscribed or circumscribed on the trapezia 22. The antenna metal structure is embedded in a volume of polyurethane contained in a PVC casing.
Patent GB-930995-A (GB)
Title: A connecting device for mine roof support bars
IPC: E21D17/086
Filed: 1959-09-14
Abstract: 930,995. Mine roof supports. RHEINSTAHL WARNHEIM G.m.b.H. Sept. 14, 1959 [Jan. 17, 1959], No. 31294/59. Class 20 (2). Mine roof bars normally connected together by hinge pins and wedges, are connected at approximately right angles to each other by means of a plate 1 having slots 2, 3 and abutment parts 4, 5, whereby the plate is connected between bars 11, 12 by wedges 11e, 12e and pins 11d, 12d. The plate may be used in the support of a working face or at the junction of mine roads.
Patent GB-648149-A (GB)
Title: Improved device for use as a knife or a pencil sharpener
IPC: B43L23/08
Filed: 1948-12-03
Abstract: 648,149. Knives. TILDSLEY, J. Dec. 3, 1948, Neo. 31335. [Class 30] [Also in Group XV] A combined knife and pencil sharpener comprises a holder a, which leaves a portion of the back c of a safety razor blade b, exposed, and has a part d into which the blade fits and which extends beyond the blade to provide a pivot for a guard e, bent to enclose the blade, and provided with a hollow, pencil-receiving cone f and on a file h. The cone is slotted at g and the cutting edge of the blade lies inside and near the free edge of the cone. When closed, as shown, the device may be used as a pencilsharpener and, when opened, as a knife. By swing- ing the cone through a small angle the degree of sharpening the pencil may be adjusted. The file h is used when a chisel-point on the pencil is required.
Patent GB-721519-A (GB)
Title: Improvements in or relating to protective arrangements for radio frequency generators
IPC: H03F1/54
Filed: 1952-12-11
Abstract: 721,519. Valve protecting circuits. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 11, 1952 (Dec. 29, 1951], No. 31385/52. Class 40 (6). A radio frequency generator more particularly for induction heating, is protected from overload by controlling the current supply to the generator in dependence upon the rate of change of radio frequency voltage in the output circuit. An oscillator A comprises a resonant circuit 1, 2 to which the load is coupled, the H.T. supply being obtained from a conventional rectifier circuit B. An oscillatory voltage is fed through a capacitor 21 to a rectifier valve 25 which produces a D.C. voltage across a potentiometer 24. In the event of a sudden change of output voltage due for example to detuning or flash over the resulting change of voltage across the potentiometer causes current to flow through a capacitor 33.. This induces a voltage in the secondary of a transformer 34, 35, causing a thyratron 12 to fire. Contacts 9 of a relay in its anode circuit accordingly open, causing the rectifiers to be cut off and the D.C. supply to the oscillator to cease. Contact 9 also breaks the energizing circuit for the relay and after a time delay the relay releases and the power supply is restored. A relay 27 is operated after a time delay by current through the rectifier and prevents the protective circuit being operated during the transient period following switching on. In an alternative circuit, Fig. 2 (not shown), the isolating transformer 34, 35 and thyratron are omitted and the rectifier circuit is therefore isolated from earth.
Patent GB-968268-A (GB)
Title: Improvements in or relating to fluid flow control valves
Inventor: KREYE ERIC WILLIAM
IPC: F15B11/06
Filed: 1960-09-15
Abstract: 968,268. Valves. TELEHOIST Ltd. Sept. 14, 1961 [Sept. 15, 1960], No. 31739/60. Heading F2V. A selector valve comprises a body 1, Fig. 3, housing a rotary-cylindrical closure-member embodying two axially spaced but opposed parallel flat-surfaces defining ribs 13, 14, which latter are disposed perpendicularly to one another ; each rib, which has a through bore 15, 16, rotates in a chamber 17, 18, respectively. Common supply and return passages 27, 25, Figs. 6 and 9, branch into each chamber at 90 degree spacings whilst working passages 33, 34, spaced as shown, lead to a double-acting ram or to single-acting rams A, B in opposition. The part-cylindrical end-surfaces of the ribs are wide enough to seal any of the fluid passages opening into the chambers 17, 18; the closure member has three positions, two for ram extension or retraction and one in which the working passages 33, 34 are blocked and the supply and return passages 25, 27 are in communication.
Patent GB-1157274-A (GB)
Title: Brushless Direct-Current Motor
IPC: H02K29/08
Filed: 1966-07-15
Abstract: 1,157,274. Electric motors; inverting. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 15 July, 1966 [15 July, 1965; 21 Sept., 1965(2); 22 Sept., 1965], No. 31821/66. Headings H2A and H2F. A motor has a permanent magnet rotor cooperating with a stator having windings 4, 5, 6 supplied individually in sequence according to the position of the rotor through switching transistors 14, 15, 16 which are controlled by magnetic-field responsive resistors 8, 9, 10 provided in the base circuit of the switching transistors. The resistors 8, 9, 10 which may comprises plates of indium antimonide are attached to a stationary control core (11) which includes an axially magnetized permanent magnet (12) coaxial with the shaft (1), Fig. 1 (not shown). A magnetic sector piece secured to the rotor shaft rotates past the 120 degree angularly spaced legs of the control core, and resistors 8, 9, 10 either have high resistance, when subjected to the magnetic field or low resistance when not so influenced, i.e. when the sector is not adjacent the resistor. By means of the potential divider formed by the magnetic-field-responsive resistors and fixed resistors 17, 18, 19 this variation of resistance alters the potential on the base of the respective transistor 14, 15, 16 to cause current to flow in the associated stator winding 4, 5, 6 thereby accelerating the rotor. The speed of the motor is controlled by providing a control transistor 50 whose base is connected to transistor 44 which is connected in the output of bridge circuit 43. If the speed rises above the value, determined by the component values in the bridge circuit 43, transistor 44 will become conductive and cause transistor to gradually become non-conductive. This removes the control circuit voltage so transistors 14, 15, 16 stop conducting to allow current flow in the stator windings. When the rotor has slowed down bridge 43 is again balanced and transistor 44 becomes non-conductive. In a modification a control transistor may be used in the base circuit of each switching transistor, Fig 5 (not shown). The number of magnetic field responsive resistors used may be reduced by biasing one switching transistor to conduct unless a voltage is injected into its base circuit from the output of another switching transistor which is controlled by a magnetic field responsive resistor, Fig. 6 (not shown).
Patent GB-1189132-A (GB)
Title: Improvements relating to Circular Knitting Machines
Inventor: CARROTTE FREDERICK HENRY
IPC: D04B15/68
Filed: 1966-07-15
Abstract: 1,189,132. Knitting-machines. A. KIRKLAND & CO. Ltd. 14 July, 1967 [15 July, 1966], No. 31912/66. Addition to 1,058,553. Heading D1C. In a circular machine substantially as described in Specification 1,058,553 jacks 9 selected by a pattern mechanism 34 are locked in either of two positions by engagement of tails 30 with corresponding tails on locking jacks 8 below the needles. The locking engagement is released by rise cams 28 at one, two or preferably all cam segments so that the jacks may be reselected by associated pattern mechanisms.
Patent GB-1153760-A (GB)
Title: Improvements in or relating to Switching Arrangements in Dictating Machines
IPC: H01H3/50
Filed: 1966-07-15
Abstract: 1,153,760. Mechanical switches. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 15 July, 1966 [19 July, 1965], No. 31915/66. Heading H1N. A switch lever for a dictating machine has two operating positions in one of which it may be operated by the weight of the microphone. In one example as shown in Fig. 1, the lever 3 is held by a detent device 9, 10 when in its first position for manual operation but can be pulled out to pivot about the right-hand end of slot 17 under the weight of the microphone when placed on the lever. In a modification, Fig. 5, the lever 3 may be swung to one side about a vertical pivot 34 of a swivel mounting 26. At one location 24 it is engageable by a detent spring (not shown). At the other location 32 it projects further from the casing to provide a support for the microphone and is yieldingly held in the upward " on " position by a contact return spring 30. More than one pair of contacts may be actuated and different sets of contacts may be actuated at the two locations of the lever.
Patent GB-1554080-A (GB)
Title: Fibre-reactive azo dyes containing fluorotriazing radicals
IPC: C09B62/085
Filed: 1977-08-02
Abstract: Fibre-reactive azo dyes of the formula <IMAGE> where the symbols are as defined in Claim 1, are obtained by reacting a diazotised amino compound of formula        A-NH2     (2> a coupling component of the formula <IMAGE> where A and B together contain from 1 to 6 sulpho groups, and A or/and B contains a -N(R)H group, 1 or 2 equivalents of 2,4,6-trifluoro-s-triazine of the formula <IMAGE> and 1 or 2 equivalents of optionally different aminobenzenes of the formula <IMAGE> by coupling and condensation in any desired order to form a fibre-reactive azo dye of the formula (1), and optionally treating the intermediate azo compound or the ready-made fibre-reactive azo dye of the formula (1) with metal-donating agents. The fibre-reactive azo dyes of the formula (1) are notable for high reactivity and high degrees of fixation and produce fast dyeings in yellow to brown shades of cellulose textile material.
Patent GB-364723-A (GB)
Title: Purification of crude aromatic compounds
IPC: C07D209/84
Filed: 1930-10-28
Abstract: Crude or semi-refined anthracene, acenaphthene, phenanthrene, or carbazole is purified by fractional sublimation with vapours, superheated if desired, of at least one liquid solvent falling within the group including aromatic hydrocarbons, nitrohydrocarbons, phenols, aromatic amines, alicyclic hydrocarbons and their hydroxy derivatives such as benzene, toluene, solvent naphtha, nitrobenzene, aniline, tetrahydronaphthalene, dekahydronaphthalene, cyclohexane, cyclohexanol, phenol, cresol or technical cresylic acid.  Vapours of chlorinated hydrocarbons such as o-dichlorbenzene and furane compounds such as furfural may also be used in admixture with these solvents.  The vapours, superheated if desired, may be passed through or over the heated or molten crude anthracene, acenaphthene, phenanthrene, or carbazole or the molten compound may be sprayed into ascending vapours of the subliming solvent or permitted to flow countercurrent thereto for example in a baffle tower.  The solvent may also be mixed with the crude compound and the mixture heated. The vapours are then condensed and filtered and the filtrate is distilled and the vapours re-used or the vapours may be cooled so that the solid material separates out and the vapours are re-used. When purifying anthracene a carbazole solvent such as furfural or pyridine may be added to the condensed vapours to yield a purer anthracene.  The purified compound from crude anthracene containing anthracene and carbazole may be treated for the recovery of carbazole by heating with caustic alkali and removing the anthracene by solvents, recrystallizing from furfural, pyridine or other carbazole solvent. Phenanthrene may also be recovered or the anthracene may be directly oxidized to anthraquinone.  In examples (1) vapours of solvent naphtha, superheated if desired, are passed through molten crude anthracene and the condensate is cooled and filtered the filtrate being re-used as vapour, the residue in the still added to a fresh batch of crude phenanthrene being recovered if desired; (2) vapours of cresylic acid are passed through crude anthracene and the vapours are condensed and if it is desired to obtain phenanthrene the sublimation is carried out at a higher temperature.  Alkali is used to wash the filter cake to remove the solvent therefrom.  The filtrates are distilled and re-used; (3) aniline is used to replace cresylic acid in example (2) acid being used to wash the filter cake; (4) vapours of solvent naphtha are used as in example (1) and carbazole is recovered from the product.  Specifications 364,628 and 364,629 are referred to.
Patent GB-1531035-A (GB)
Title: Contact lens sterilization process and apparatus
IPC: A61L12/12
Filed: 1976-08-04
Abstract: 1531035 Sterilizing contact lenses RYDER INTERNATIONAL CORP 4 Aug 1976 32430/76 Heading A5G A method of sterilizing contact lenses by use of a sterilizing solution e.g. hydrogenperoxide in a closeable vessel 22, which solution will undergo a decomposition reaction when brought into contact with a catalytic agent e.g. platinum, said method comprising: providing a closeable reaction vessel supported by bracket 24 partially filled with said sterilizing solution; placing said article or articles to be sterilized into said vessel in contact with said sterilizing solution; disposing said catalytic agent internally of said vessel; maintaining the strength of said sterilizing solution by delaying the decomposition reaction which will take place between said solution and said catalytic agent positioning of said vessel in a first vertical orientation with said article in contact with said sterilizing solution while said catalytic agent is disposed above and out of contact with said sterilizing solution, inverting said vessel after a prescribed period of time to reposition said vessel in a second vertical orientation with said catalytic agent in contact with said sterilizing solution thereby commencing the decomposition reaction which will ultimately result in decay of said sterilizing solution, and allowing said sterilizing solution to decay to a level wherein the strength thereof is below a specified concentration.
Patent GB-918783-A (GB)
Title: Improvements in or relating to phase control of three phase power supplies
IPC: G05F1/32
Filed: 1959-09-24
Abstract: 918,783. Automatic phase control. COLE Ltd., E. K., COX, V. J., and BEAVEN, R. P. Sept. 12, 1960 [Sept. 24, 1959], No. 32472/59. Class 40 (5). Relates to an apparatus or system for maintaining in correct symmetrical phase relation a three-phase power supply derived from circuits providing two single-phase outputs substantially in quadrature; which comprises means for feeding these outputs to an arrangement of Scott-connected transformers with which is connected a phase discriminator which derives an error signal proportional to the extent of any incorrect phase relationship at the three-phase output terminals, and means for utilizing the said error signal to vary the phasing between the two single-phase outputs to correct the said incorrect phase relationship. The two singlephase outputs may be obtained from a single oscillator O with a phase-shifting network R1, W1 in its output (see Fig. 1) or from two separate locked oscillators (Fig. 2, not shown). The two outputs are fed via power amplifiers whose outputs are voltage-regulated to the two inputs of Scott-connected transformers X. The threephase outputs are taken from the terminals A, B, C of this system, and across two pairs AB, AC, rectifier circuits BR1, BR2 are arranged to feed opposite polarity outputs to control windings W3, W4 of a saturable core reactor L1. Any difference in the two outputs alters the flux through, and hence the inductance of, winding W1, so as to alter the phase angle between the two inputs to the Scott transformers, and restore the three-phase outputs to their correct relationships.
Patent GB-723512-A (GB)
Title: Filing drawings
IPC: B42F15/06
Filed: 1952-12-22
Abstract: 723,512. Filing papers. BECKER, O. A. Dec. 22, 1952 [Dec. 27, 1951], No. 32506/52. Class 146 (1). An attachment for filing drawings comprises a stiff strip 1, 1b extending along the length of the drawing and adapted to rest as by hooks 2, on rails 3 in a filing cabinet, and a plurality of clamps 4, 4b attached to the strip, each adapted to exert clamping pressure at right angles to the non-folded edge of a drawing and each capable of being separately opened and remaining open until closed by hand. Each clamp 4, 4b comprises springy steel wire having one end 5 bent downwardly, a central U-shaped portion of which the two bends 8 are bent inwardly for exerting clamping pressure, and two straight portions 11, 9, the end 9 being positively engaged with a hook 10. As shown in Fig. 1, the hook 10 is secured to the strip 1 and the end 5 is passed through a slot 6 cut in the strip and inserted under a domed plate 7 secured as by welding to the rear of the strip 1. Inserted drawings will abut against the straight part 11. In a modification of this construction, the strip 1 is profiled and inserted drawings abut one side of the profile, the clamp having a V-shape bent in towards the strip. Stiffening corrugations are provided along the top of the strip and a rider may fit over the top and into the top corrugation. As shown in Fig. 3, the clamping loops 4b can be mounted where desired on the strip 1b, each loop 4b being mounted on a separate plate 16 having a pair of holes 18. The strip 1b is provided with a series of holes 17 and a small flexible plastic plate 19 has top and bottom projections 20 which are inserted in the holes 18 and appropriate holes 17. Small drawings can thus be hung side by side along the length of the strip 1b. A rider 21 and grooves 22 are also provided.
Patent GB-652346-A (GB)
Title: Apparatus for heating air
IPC: F01N5/00
Filed: 1948-12-16
Abstract: 652,346. Heating air. WORSDALE, T. W. Dec. 16, 1948, No. 32519. [Class 64(iii)] Air is heated in a heat exchanger unit 1 by the water of the engine cooling system and in a second heat exchanger 5 by the exhaust gases of an I.C. engine (not shown) which also drives a blower 10 forcing air through the apparatus. The heat exchanger units 1 and 5 each comprise parallel straight tubes extending between tube plates and surrounded by a casing. The unit 1 is provided with connections 3 leading to the engine cooling system, the water from which flows within the casing and over the tubes 2. The unit 5 is connected by a pipe 7 to the engine exhaust, the hot gases flowing over the tubes 6 to a stack 8. Air is drawn by the fan 10 through a dust filter 15, through the tubes 2 of the unit 1, through a space connecting the tubes 2 and 6 formed by the cover 11, through the tubes 6 of the unit 5, and is forced by the fan to a duct 12 leading to grain storage bins or the like. The temperature of the air passing through the duct 12 is controlled by manually operated sliding dampers 13, 14. A filler 4 is provided in the heat exchanger unit 1.