baber/WOPTO huggingface dataset:
Patent GB-1066052-A (GB)
Title: Production of electrically conducting carbon
Inventor: RILEY HARRY LISTER
IPC: C01B31/00
Filed: 1963-02-22
Abstract: An electrically conducting article is prepared by forming a body from an intimate mixture of amorphous carbon and metal of the iron group (Fe, Co and Ni), amounting to at least 5% by weight of the mixture, and heating the body to 1300 DEG  to 1700 DEG  C. to graphitize the carbon until the resistivity does not exceed 2000 micro-ohms per centimetre cube.  The body may be formed by moulding or extruding a mixture of granular coke, including some graphite powder or coke scrap, metal and a carbonaceous binder, e.g. coal tar pitch or a thermosetting resin, to form a "green" compact which is baked before graphitization.  In one embodiment the mixture of coke and metal is prepared by carbonizing a mixture of iron oxide and coal. A graphitization promoter may be incorporated in the body, e.g. Al, Si or Ni in the form of an iron-rich alloy.  When the Si is in the form of ferrosilicon, the iron content therein constitutes some or all of the iron required. In the examples, are furnace electrodes are prepared.
Patent GB-1249203-A (GB)
Title: Improvements relating to electric battery charging circuits incorporating solid state rectifiers
Inventor: MARTIN ANTHONY MICHAEL
IPC: H02J7/14
Filed: 1969-02-11
Abstract: 1,249,203. Battery charging circuits. INTERNATIONAL RECTIFIER CO. (GREAT BRITAIN) Ltd. 9 April, 1970 [11 Feb., 1969], No. 7310/69. Heading H2H. A battery charging circuit for an automobile comprises an A.C. generator 10, a solid state rectifier 11 supplying a D.C. load via a fuse 12 and a voltage regulating by-pass circuit 14 which prevents the voltage across the rectifier from exceeding a safe level thereby protecting the rectifier against damage by an over voltage caused by the blowing of the fuse due to a fault. In the event of the fuse blowing the open circuit voltage of the three phase alternator 10 rises to a high level and a Zener diode 19 triggers a thyristor 15. The by-pass circuit thus constitutes a load across the rectifier output thereby protecting the rectifier diodes from an over voltage.
Patent GB-1419562-A (GB)
Title: Method of generating a phase-modulated rectangular wave
IPC: H04J9/00
Filed: 1973-02-14
Abstract: 1419562 Pulse modulation; multiplexing FUJI XEROX CO Ltd 14 Feb 1973 [17 Feb 1972] 7364/73 Heading H4L A rectangular carrier wave Fig. 2a has its leading edges phase modulated by one signal b and its trailing edges phase-modulated by a second signal e. The two signals are thereby sent simultaneously without increasing bandwidth. Modulating (Fig. 1, not shown).-The carrier a is differentiated (2) and the positive and negative edges c used respectively to trigger monostables (3, 4). The monostables' outputs are pulse-width modulated by the respective input signals b, e so that their trailing edges are correspondingly phase modulated. The trailing edges are extracted g, h by respective differentiators (5, 6) and used to set and reset a bi-stable (7) whose output therefore is a carrier-frequency pulse train whose leading and trailing edges are phase-modulated in the desired way j. Demodulating (Figs. 3, 4, not shown).-The leading and trailing edges of the received signal (a) are extracted by a differentiator (9) and used to trigger respective monostables (10, 11) whose equal width output pulses (c, d) thus have leading edges coincident with the leading and trailing edges respectively of the received signal. These are added to respective sawtooth waves, at the frequency of and synchronized to the carrier, supplied by a generator (14). Those pulses which are phase delayed, due to the modulating inputs at the transmitter (Fig. 2b, 2e, not shown), sit further up their sawtooth slopes (f, g) and consequently exceed a threshold voltage. This is detected (at 15, 16) and low pass filters (17, 18) derive the output signals (h, i).
Patent GB-177685-A (GB)
Title: Improvements in locking devices for handles of brooms, tools, implements and the like
IPC: B25G3/00
Filed: 1921-03-08
Abstract: 177,685. Boonzaier, W. G. March 8, 1921, Wedges. - Locking devices for handles of brooms, tools, implements and the like of the type comprising a wedge with two or more prongs on one end, chamfered on the sides in opposite directions, are provided with prongs at both ends of the wedge or with a flange at one end for attachment to the bottom of a socket or to the end of a handle. As shown in Figs. 1 and 5, thewedge. 1 has three prongs 2, 3, 4 on its point and two prongs 5, 6 on its head. The engaging end 7 of the handle is formed with a shallow slot or saw cut deep enough to hold the wedge in position whilst it and the handle are being jointly inserted into the broom head. When the handle,- is forced home, the prongs spread out as shown in Fig. 5, due to the alternate chamfering of the prongs, the handle and broom being thus securely locked together. In Figs. 7 and 11, the prongs at one end are replaced by a flange 10 which is pierced for the reception of screw 12 or the like by means of which it is attached to the broom handle or broom-head socket.
Patent GB-1128234-A (GB)
Title: 5-benzylpyrimidine derivatives and process for the preparation thereof
IPC: C07D239/49
Filed: 1966-02-19
Abstract: 1,128,234. 5-Benzyl-pyrimidine derivatives. WELLCOME FOUNDATION Ltd. (Burroughs Wellcome & Co. (U.S.A.) Inc.). 16 Feb., 1967 [19 Feb., 1966], No. 7376/66. Heading C2C. 5-Benzyl-pyrimidine derivatives of the formula wherein X and Y are the same or different and each is an amino or hydroxyl group, Z is a hydrogen atom, an alkyl group containing not more than 4 carbon atoms, an hydroxyl group, or a substituted or unsubstituted amino group, the said substituted amino group including a cyclic amino group, such as a piperidino or morpholino group, R<SP>1</SP> is a hydrogen atom or a saturated or unsaturated hydrocarbon radical which may be optionally substituted by halogen, and R<SP>2</SP> and R<SP>3</SP> are the same or different and each is a hydrogen atom, a halogen atom, or an alkyl or alkoxy group containing not more than 4 carbon atoms, are prepared by reacting together a pyrimidine derivative and a Mannich base of the respective formulµ wherein NR 2 <SP>4</SP> is a dialkylamino or a cyclicamino group, and optionally reacting the resulting novel 5-benzyl-pyrimidine derivative of the first formula above wherein R<SP>1</SP> is hydrogen with a compound R<SP>1</SP>Q, wherein Q is a reactive atom or group and R<SP>1</SP> is a saturated or unsaturated hydrocarbon radical which may be optionally substituted by halogen, under basic conditions. 2,6 - Dimethoxy - 4 - (N,N - dimethylaminomethyl)-phenol is prepared by reacting together 2,6-dimethoxyphenol, dimethylamine and formaldehyde. Pharmaceutical compositions having antibacterial activity comprise as active ingredient a 5-benzyl-pyrimidine derivative of the first formula above wherein R<SP>1</SP> is hydrogen in admixture with a pharm aceutically acceptable carrier.
Patent GB-934095-A (GB)
Title: Polyester compositions
IPC: D01F1/10
Filed: 1962-02-26
Abstract: A synthetic linear polyester contains from 0,1 to 1,5 parts per million of a blue pigment and from 0,05 to 0,1% of an optical brightener of the formula <FORM:0934095/IV(a)/1> where A and B are cyclic radicals containing one or two aromatic rings, A being monovalent and B being vicinally divalent, -X is -CN, -CONH2 or -COO (lower alkyl), and n is 0 or 1, provided that an X substituent is attached to the A radical when n is zero, the proportion of pigment and optical brightener being based on the weight of the polymer.  The synthetic linear polyester is defined as having a relative viscosity of at least about 8 in a solution of 11 g. of the polymer in 100 cc. of a solvent composed of 58,8 parts by weight of phenol and 41,2 parts by weight of trichlorophenol.  Preferred polyesters contain residues of ethylene, diethylene, butylene, decamethylene or cis- or trans-p-hexahydroxylene glycol and terephthalic or 2:6 or 2:7-naphthalene dicarboxylic acid in admixture with adipic, sebacic, isophthalic or hexahydroterephthalic acid.  Many optical brighteners are specified.  Specified blue pigments are monastral fast blue and indanthrene.  Violet pigments may also be present in the compositions.  The examples describe the condention of dimethyl terephthalate with ethylene glycol, dimethyl terephthlate with p-hexahydroxylylene glycol and dimethyl-2:6-naphthalene dicarboxylate with ethylene glycol, specified pigment compositions being monastral fast blue B, platinum violet and 2-(4111-chloro-211-cyanostilbyl - 411) - (naphtho - 11,21:4,5) - 1:2:3-triazole, triazole, monastral fast blue B and the triazole specified above and monastral fast blue B and 2 - (4111 - chloro - 211 - carboxamidostilbyl-411)-(naphtho-11:21:4:5)-1 -2:3-triazole. Catalysts employed in preparation of the polyesters being a mixture of manganous acetate with antimony trioxide and tetraisopropyl titanate.  Specification 863,164 is referred to.
Patent GB-661236-A (GB)
Title: A combined ampoule and injection syringe
IPC: A61M5/28
Filed: 1949-03-21
Abstract: 661,236. Combined ampoules and syringes. LEONETTI, F., and TASSO, F. March 21, 1949 [Oct. 7, 1948], No. 7629/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 7, 1949.] Class 81 (ii). In a combined ampoule and hypodermic syringe the ampoule comprises a body having a cavity which is covered by a movable or flexible partition, actuation of which causes the medicament in the cavity to be ejected through a needle secured, with its protective cap, to the body. As shown the ampoule comprises a rigid disc-like member 1 formed with an indentation 2 to the rim of which is secured a tightly fitting membrane 3 which may either be of a soft and inelastic material, Fig. 2, and assume a convex shape symmetrical to the cavity, or soft and elastic as in Fig. 3, and plane in shape. The medicament from the indentation 2 is evacuated via the channel 4 and needle 5 which is encased in a protective cap 6 of a material such as glass or plastic. According to the Specification as open to inspection under Sect. 91 the partition covering the cavity of the ampoule may be a tight fitting piston sealed off in its inoperative position by wax &c. The piston may be replaced by an elastic membrane which may be operated by a push member sliding in a cylinder. This subject-matter does not appear in the Specification as accepted.
Patent GB-989013-A (GB)
Title: New guanidines and process for their manufacture
Filed: 1962-02-27
Abstract: The invention comprises N-R1-N-R2-amino - lower alkyl - guanidines in which R1 represents an optionally substituted cyclo aliphatic radical of 3 to 8 carbon atoms (optionally containing lower alkyl, lower alkoxy groups and/or halogen atoms) and R2 represents a hydrogen atom or an aliphatic radical and wherein the guanidino group may be unsubstituted or substituted by aliphatic hydrocarbon radicals or by acyl groups, their acid addition salts and the preparation thereof by reacting a primary or secondary N-R1-N-R2-lower alkyl-amine with an S-lower alkyl-isothiourea, or a salt thereof, and, if desired, acylating the resulting compound and/or converting a resulting salt into the free compound or a resulting free compound into a salt thereof.  2 - (N - Cyclo - octyl - N - methylamino)-ethylamine is prepared by reacting N-cyclooctyl - N - methylamine with glycolinitrile to give (N - cyclo - octyl - N - methylamino) - acetonitrile and reducing the last named compound.  Pharmaceutical compositions comprise the guanidines of the invention together with a pharmaceutical excipient in a form suitable for enteral or parenteral administration e.g. capsules, tablets, dragees, solutions, suspensions or emulsions.  The compositions may contain other therapeutically useful substances. The compositions are anti-hypertensive agents. Salts specified include ascorbates, salicylates, p-aminosalicylate and acetylsalicylates.
Patent GB-563842-A (GB)
Title: Improvements in and relating to electric relays
IPC: H01H50/40
Filed: 1943-05-14
Abstract: 563,842. Electromagnetic switches ; control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. May 14,1943, No. 7698. Convention date, May 16,1942. [Classes 38 (iii) and 38 (v)] A reverse-current relay, particularly for controlling an electric motor connected to an overhauling load, has two coils 19, 20, which act together to attract an armature 13, and a magnetic shunt 30 arranged so that when the current in the coil 19 reverses and the coils 19, 20 oppose each other so that the armature 13 is released it is held in the release position by the flux from the coil 19 traversing a closed path through the shunt 30 and the armature 13 even though the flux due to the reverse current overpowers considerably the flux due to the coil 20. In the form shown the coil 19 is a " series " coil connected in the armature circuit 35 of a motor having a field winding 36 and the coil 20 is a " shunt " coil. The motor may drive a crane hoist and normally the armature 13 will be attracted so that a resistance 37 is included in the field circuit and the motor speed increased. Should a heavy load that is being lowered overhaulthe motor, the current in coil will reverse, the relay will release, the resistance 37 be short circuited and the full braking effect of the motor brought into play.
Patent GB-551931-A (GB)
Title: Improvements in the manufacture of porous metal sheets and the like
IPC: B22F7/00
Filed: 1942-06-06
Abstract: 551,931. Porous metal articles; composite metal articles. GENERAL MOTORS CORPORATION. June 6, 1942, No. 7722. Convention date, April 4, 1941. [Classes 82 (i) and 82 (ii)] [Also in Group XXII] Porous metal in strip form is made by distributing loose metal powder on a conveyer, compacting the layer by pressure, and then sintering the strip to such an extent that the product is porous. Two or more layers or powders, which may be of different density or composition may be compressed together; or layers of powder may be compressed on the surface of a steel strip and the whole sintered to form a composite porous layer bonded to the steel strip. In the apparatus shown, metal powder is fed by gravity from a hopper 34 to an endless belt 22, and the layer 40 of powder is compressed between the belt and an adjustable roll 42 and may be guided by rollers 46 to rolls 48, 50 between which it may be further compressed. The belt 22 and roll 42 are cleaned and dusted with graphite or the like by means of brushes 32, 54 revolving in graphite 30, 56.
Patent GB-511677-A (GB)
Title: Improvements in field drainage pipes
IPC: E02B11/00
Filed: 1939-03-10
Abstract: 511,677. Drain pipes. VERHOOG, W., VINK, F., and GRIENDT, P. J. VAN DER. March 10, 1939, No. 7745. [Class 99 (ii)] [Also in Group I] A land drainage pipe has longitudinal ribs 3, 4 which are tangential and downwardly inclined. Openings 5 beneath the ribs comprise inclined slots parallel to the ribs.
Patent GB-372885-A (GB)
Title: Improvements in and connected with the body of a pit-tub, wagon or the like, and analogous receptacles such as buckets adapted to travel on overhead ropeways
IPC: B61B12/00
Filed: 1931-03-13
Abstract: 372,885. Wagon sides and floors: skips: riveted joints. ALLEN & SONS (TIPTON), Ltd., W. G., WEDDELL, A., and TOLHURST, W. T., Princes. End, Tipton, Staffordshire. March 13, 1931, No. 7760. [Class 103 (iv).] In a pit tub, wagon, skip or like receptacle of the kind, e.g. as described in Specification 259,773, [Class 103 (iv), Railway &c. vehicles, Body details &c. of], in which the sides, ends and base are provided with interengaging hook edges, these parts, after an initial positioning, are assembled by imparting to the ends (or sides, as the case may be) a vertical movement relative to the base so as to engage one set of hooks, and then imparting to the sides (or ends) an outward horizontal movement so as to engage the remaining hooks. In the flatbottomed pit tub body shown in Figs. 1, 2 and 3, the ends of the base are provided with outwardly and downwardly bent hooks c, d, while the sides thereof have upwardly and inwardly turned hooks e, f, the ends g of the tub having a lower set of hooks g2 which are first engaged with the hooks c, d by a vertical movement, while the sides h have a lower set of hooks h2 adapted subsequently to engage with the hooks e, f, and side hooks h<3> adapted to engage with side hooks g<3> on the ends g, each side h for this purpose being given an outward horizontal movement. Rivets are finally passed through the parts to unite them securely. A modification is described in which the sides h have rounded corners, and corner cleats are employed at each corner of the base as described in Specification 349,368. In a further construction the invention is applied to a well-bottomed tub equipped with removable buffer beams as described in Specification 355,471.
Patent GB-1178440-A (GB)
Title: Lighting Control Circuit.
Inventor: GAVRON NATHAN
IPC: G05F1/455
Filed: 1967-02-17
Abstract: 1,178,440. Lighting control circuits. CENTURY LIGHTING Inc. 17 Feb., 1967, No. 7820/67. Heading H2H. The illumination intensity of an incandescent lighting load L is controlled by the arrangement shown in the Figure, in which the firing angle of silicon-controlled rectifiers 36, 36<SP>1</SP> (in series with the load L and inverse-parallel connected with respect to each other) is varied by a D.C. signal applied between terminals 12, 14. Each rectifier 36, 36<SP>1</SP> has a respective firing circuit 38, 38<SP>1</SP> comprising (only circuit 38 will be described) a relaxation oscillator in the form of a doublebased diode 52 and a capacitor 58, which is charged during alternate half-cycles of the supply 18, 20 through corresponding members 58<SP>1</SP>, 64<SP>1</SP> of the circuit 38<SP>1</SP> and through an impedance network 66 consisting of identical saturable reactors 68, 70 having load windings 72, 74 in series aiding relationship and control windings 76, 78 in series opposing relationship. The signal at terminals 12, 14 is applied to control windings 76, 78 to vary the impedance of reactors 68, 70 and hence the charging time of the capacitor 58 or 58<SP>1</SP>, which time determines the instant of firing of the corresponding rectifier 36 or 36<SP>1</SP> whose conduction causes its firing circuit to be disabled (shorted out) for the remainder of the half-cycle. A resistor 102 maintains the firing circuits 38, 38<SP>1</SP> energized when the main contactor 30 controlling load L is open, this contactor being opened or closed by signals applied to its coils 98, 100 from a terminal 16. The signals at terminals 12, 14, 16 may control a plurality of separate lighting loads and may, in the case of terminals 12, 14, be in the form of smooth or pulsating D.C.
Patent GB-632317-A (GB)
Title: Improvements relating to hypodermic syringes
IPC: F16L37/24
Filed: 1947-03-24
Abstract: 632,317. Hypodermic syringes. EVERETT, S. J. March 24,1947, No. 8007. [Class 81(ii)] [Also in Groups XVII and XVIII] A needle mount a of a hypodermic syringe g having a conical recess to engage a corresponding nozzle f is provided with a pair of helical wings h adapted to be manually gripped during assembly of the parts.
Patent GB-1152565-A (GB)
Title: Recovery and Purification of Osmium.
Inventor: ILLIS ALEXANDER
IPC: C22B7/00
Filed: 1968-02-19
Abstract: 1,152,565. Sodium osmate and perosmate; potassium osmate. INTERNATIONAL NICKEL CO. OF CANADA Ltd. 19 Feb., 1968 [21 Feb., 1967], No. 8023/68. Heading C1A. [Also in Division C7] A slurry of sodium osmate is produced by gradually heating an Os-containing material to 1200-2000‹ F. in an atmosphere containing free oxygen (e.g. air), absorbing the volatilized OsO 4  in an aqueous solution and precipitating an Os-containing solid (e.g. absorbing in NaOH solution and precipitating with SO 2  and/or H 2 S or concurrently absorbing and precipitating with a solution of SeO 2  or SO 2 ), separating the solids and slurrying them, together with any Os-containing dust from the OsO 4  volatilization, in water to which is added H 2 SO 4 . The slurry is then heated, air is bubbled through to remove S as SO 2 , an oxidizing agent (e.g. NaClO 3 , NaBrO 3  or HNO 3 ) is then added with heating to volatilize OsO 4  which is collected in aqueous NaOH to form sodium perosmate which is reduced with a water-soluble organic reducing agent, e.g. methanol or ethanol, to form the osmate and precipitate any Ru present. K 2 OsO 4 .2H 2 O may be precipitated as violet crystals from the solution by addition of an excess of saturated aqueous KOH.
Patent GB-1426535-A (GB)
Title: Microwave oscillator
IPC: H03B9/14
Filed: 1974-02-21
Abstract: 1426535 Microwave filters HUGHES AIRCRAFT CO 21 Feb 1974 [22 Feb 1973] 8035/74 Heading H1W [Also in Division H3] An oscillator includes inner and outer conductors 34 and 12, 14, a negative resistance diode such as an TRAPATT diode 46 connected to the outer conductor 12, an impedance matching step transformer 44 connected between the diode 46 and the inner conductor 34 and a plurality of tuning slugs 36, 38, 40 and 42 slidably mounted between the inner and outer conductors to form a LPF. As shown the step transformer 44 is operable to match the low impedance of the diode 46 to the high impedance of the coaxial line 12, 34 and the output load connected to 26 as well as to establish an optimum delay time and delay angle necessary to generate the avalanche shock wave in the diode 46. The energy of the output pulses generated by the diode 46 is partially reflected from the vertical wall of the first tuning slug 36 back to the diode 46 and there it initiates and sustains the high efficiency TRAPATT operation. Also the cylindrical end wall 45 of the step transformer 44 serves as one parallel plate of a relatively large gap capacitance which is necessary for handling the relatively large displacement currents flowing in the diode 46. The other plate of this gap capacitance is formed by the cylindrical end of an A1 header 48 which is in contact with the outer conductor 14. The tuning slugs 36, 38, 40 and 42 can be of anodized A1 and are slidable by means of a slot 16 on the inner conductor 34 to form a low pass filter. The positions of the slugs are secured by screws (18, Fig. 1, not shown) and establish a particular value of impedance seen by the diode 46 which corresponds to a preselected frequency for the oscillator when operating at a maximum D.C.- R.F. conversion efficiency. The oscillator generates fundamental and harmonic frequencies. The structure of the oscillator may be made of Al.
Patent GB-478406-A (GB)
Title: Process for the concentration of aqueous dispersions of rubber and similar rubber-like substances
IPC: C08C1/075
Filed: 1937-03-18
Abstract: The concentration of aqueous dispersions of rubber and the like is effected by subjecting the dispersion to be concentrated to cooling, preferably whilst agitating, so as partially to freeze it and separating the liquid portion rich in rubber from the solid portion poor in or free from rubber.  Alternatively the dispersion to be concentrated may be first frozen completely and then partly thawed. The dispersions so obtained may be further concentrated by repeating the process or by evaporating, e.g. by means of the apparatus described in Specification 255,014, [Class 70].
Patent GB-308888-A (GB)
Title: Improvements in and connected with cord grips for electric fittings and appliances
IPC: H01R33/00
Filed: 1928-03-16
Abstract: 308,888. Shackel, P. R., and Ranton, Ltd. March 16, 1928. Holders.-A cord-grip for electric lamp-holders, ceiling roses, and other fittings comprises a cap 1 having separate apertures 6 for the passage of the supply wires 7 and a washer or nut 4 adapted to be operated by a screw or bolt 3 to clamp the wires.