baber/WOPTO huggingface dataset:
Patent GB-566020-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04M1/18
Filed: 1943-06-04
Abstract: 566,020. Party-line systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., SAVILLE, W., PREIST, T. P., and THOMPSON. G. W. June 4, 1943, No. 8964. [Class 40 (iv)] A system for use in mines and other situations where sparking is to be avoided, employs telephone instruments of the electromagnetic type requiring no source of current and calling is effected by high frequency current which produces a howl in a telephone unit of the same type, the arrangements being such that the calling current is prevented from producing a loud noise in the receiver should it be in circuit when calling takes place. In Fig. 1, the transmitter SPT and receiver SPR (or a single instrument serving both purposes) are permanently connected across the line and calling is effected over one wire with an earth return, the calling unit SPH and generator HFG being connected up alternatively at contacts ON which are operated when the crank is turned. In Fig. 2, calling current passes over both line wires and a relay R made responsive thereto by rectifiers MRC, MRD disconnects the speaking equipment and connects up the calling unit SPH. The speaking circuit includes switch-hook contacts SW3, end the receiver SPR is shunted by rectifiers MRA, MRB to limit its energy imput. In Fig. 3, the relay R is dispensed with, and, with the switch-hook contacts SW4 normal, calling current passes by way of a transformer T to the calling unit SPH and a neon tube NT which serves as a visual signal. In Fig. 4, the the transmitter SPTH which is connected in circuit independently f the switch-hook contacts SW5 serves also as the calling unit, while in Fig. 5, the receiver SPRH is utilised as the calling unit, its input being limited by shunt rectifiers MRA, MRB when the switch-hook contacts SW6 are closed. The instruments may be of the kind described in Specification 457,794.
Patent GB-383520-A (GB)
Title: Improvements in and relating to electric control circuits
IPC: H02M7/15
Filed: 1932-03-29
Abstract: - 383,520. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych; London.-(Assignees of Teare, B. R.; 604, State Street, Schenectady, New York, U.S.A.) March 29, 1932, No. 9023. Convention date, March 30, 1931. [Class 38 (ii).] Periodic impulses of peaked wave form are derived from a source of sinusoidal A.C. 12 by means of grid-controlled valves 17, 18 in which the grid potentials are caused to lag 90‹ behind the anode voltages. The valves are connected in reversed parallel relationship with a resistance 15 in which the impulses are utilized in their common anode circuit. The grids are energized from the same source 12 through impedance networks 20, 21 and 24, 25 designed to produce the required phase displacement to cause the valves to start conducting only when their respective anode voltages reach their maximum values thus producing quarter sine waves of steep wave front which may be further distorted by a condenser 16 to an impulse of short duration. The impulses are employed as shown to form control potentials for a pair of rectifying valves 10, 11 feeding a D.C. load circuit 13 from the source 12. Phase shifting means for effecting regulation is provided in the output circuit of the grid transformer 14.
Patent GB-254402-A (GB)
Title: Improvements in the manufacture of naphthylamine sulpho acids
Filed: 1925-04-04
Abstract: 254,402. Ehrhardt, E. F., and Hereward, R. M. April 4, 1925. Naphthylamine sulphonic acids are obtained by treating 1-nitro-naphthalene with an alkaline sulphite, or a mixture of alkaline sulphites, and ammonia under pressure in aqueous solution. Preferably a mixture of sodium and ammonium sulphites, obtained by neutralizing sodium bisulphite with ammonia, is used. This is heated with 1-nitro-naphthalene and ammonia in an autoclave and the product is poured into water, filtered, boiled to remove the excess of ammonia, and acidified with hydrochloric acid. Naphthionic acid separates out and is removed; 1 : 5 naphthalene sulphonic acid can be obtained from the mother liquor.
Patent GB-125399-A (GB)
Title: Improvements in and relating to Percussion Fuses for Explosive Projectiles.
Inventor: MIDGLEY ALBERT HENRY
IPC: F42C15/20
Filed: 1916-06-28
Abstract: 125,399. Midgley, A. H., and Vandervell, C. A. June 28, 1916. Projectile fuses.-Relates to percussion fuses of the kind in which the firing-pin d and the percussion cap f are carried by movable pellets c, e held apart by an intermediate safety member i, arranged directly between the pin and the cap. According to the invention, (1) the safety member i is retained by means disposed outside the fuse holder, (2) a slot j is formed in the safety member to accommodate the firing-pin, and (3) means are provided for ensuring that the safety member shall be assembled in the above-named position. The outside retaining means comprises a, tape k, which is coiled round the fuse holder and is attached at the inner end to the safety member and at the outer end to lugs m secured by a split pin. When this pin is removed and the projectile thrown, the tape unwinds and pulls the safety member out. The pellets are conically seated and are guided by a central pin g or by eccentric pins n or by both central and eccentric pins. The pellets are held apart after the removal of the safety member i by a spring coiled around the pin g or by two diametrically opposite springs in a plane at rightangles to that of Fig. 1. To ensure correct assemblage, the pellet c is made with a ridge c<1> opposite a cut-away part e<1> of the other pellet,. and the part of the ridge c<1> about the firing-pin is cut away to receive the safety member i.
Patent GB-912488-A (GB)
Title: Improvements in driving belts
Inventor: TOWERS PETER
IPC: F16G1/00
Filed: 1959-03-17
Abstract: 912,488. Laminates. DICK Ltd., R. & J. June 16, 1960 [March 17, 1959], No. 9155/59. Class 140. [Also in Group XXIV] In V-shaped driving belts of the type in which gripping blocks are attached to a flat band, the band is formed of layers of sheet canvas or other fabric impregnated with and bonded together by a mixture of neoprene type A.C. and any other neoprene, the proportion of the former to the latter ranging from three to one to one to one and containing a plasticizer and a vulcanizing agent, and the blocks, secured thereto by rivets or the like, are likewise formed of or covered by layers of sheet canvas impregnated with and bonded by a similar neoprene compound. The neoprene compound may be applied either in the form of a solution or by calendering. The neoprene compound may be vulcanized by heat and pressure or may contain room temperature vulcanizing agents.
Patent GB-548447-A (GB)
Title: Improvements in and relating to electrical indicating instruments
IPC: G01R5/16
Filed: 1941-07-21
Abstract: 548,447. Heat treating. SIMMONDS DEVELOPMENT CORPORATION, Ltd. July 21, 1941, No. 9172. Convention date, Aug. 23, 1940. Drawings to Specification. [Class 72] [Also in Groups XXXVIII and XIX] . The casing of an indicating instrument is heated to about 1600‹F. in the absence of oxygen, soaked at 1600‹F. for about two hours, and cooled to room temperature at a rate not greater than 100‹F. per hour, after which it is magnetized.
Patent GB-924011-A (GB)
Title: Improved vehicle and lift construction
IPC: B66F11/04
Filed: 1960-03-15
Abstract: 924,011. Mobile scaffolding. J. M. EITEL. March 15, 1960, No. 9177/60. Class 20 (2). In a vehicle incorporating an extensible, basket-carrying boom 16 mounted for rotation about a vertical axis and for pivotal movement about a horizontal axis, the roof of the vehicle is recessed at 28a to accommodate the boom and is apertured at 54 to allow positioning of the basket 18 adjacent the driver's seat, the roof of the vehicle being supported by a post 64. One side of the basket is pivotally journalled on a shaft projecting from one side of the boom, dash-pot means being provided to prevent undue swinging of the basket (see Fig. 7, not shown). The basket may be mounted externally of a driver's cab having a door adapted to provide communication therewith (see Figs: 8, 12 and 13, not shown). In another modification, Fig. 9 (not shown), the aperture in the roof instead of being closed by a removable canvas cover as in the first embodiment is closed by a sliding panel. Again, the basket may be mounted adjacent a cab permanently open on one side and rest on a resilient bumper mounted on the hood of the vehicle (see Figs. 10 and 11, not shown). U.S.A. Specifications 2,841,659 and 3,055,459 are referred to.
Patent GB-141052-A (GB)
Title: Process for reducing or softening the colours of exotic woods
IPC: B27K5/04
Filed: 1920-03-30
Abstract: 141,052. Simon, P. E. April 9, 1918, [Convention date]. Wood, treating with liquids.-A process for lightening the colour of veneers of coloured wood, in imitation of the effects produced on the same wood by the prolonged action of light so that the veneers may be used for repairing or imitating old furniture, consists in treating the wood in an acid bath, preferably nitric acid, then drying the wood at as high a temperature as it will stand without charring, and finally rinsing. Rosewood and purple-wood are subjected to a preliminary immersion in oxalic acid and rinsed in warm water before treatment in nitric acid. In order to lessen the visibility of the grain, the wood may be immersed in alcohol for 24 hours before treatment with the acid. Mixtures of nitric and hydrochloric acids are used when reddish effects are desired. Amaranth wood is treated for about half-an-hour in hot water before immersion in nitric acid.
Patent GB-523137-A (GB)
Title: Improvements in internal combustion engines of the liquid fuel injection type
IPC: F02B19/04
Filed: 1939-03-24
Abstract: 523,137. Oil engines. MEYNOL, L., and GARAUD. H. March 24, 1939, No. 9298. [Class 7 (iii)] A projection 7 on the piston enters the bore of a bushing 8 screwed into a passage leading to a combustion chamber 1, the bushing being formed with helical channels 3 which give a whirling movement to the air forced through them into the chamber 1. The projection 7 is constructed to enter into the interior of the chamber 1 at the end of the stroke. Fuel injected at 5 becomes ignited, and the gases are forced back through the channels 3 into the cylinder.
Patent GB-1495560-A (GB)
Title: Contraceptive preparation and method
IPC: C07K14/575
Filed: 1974-03-01
Abstract: 1495560 Contraceptive method E J GEORGIOU 24 Feb 1975 [1 March 1974] 9334/74 Heading A5B [Also in Division C3] A method of contraception without suppression of ovulation comprises administering to a female mammal a contraceptive preparation including an active ingredient which is prepared from female mammal blood or colostrum (including the colostrum-like secretion of the breasts of new-born mammals) by centrifugal separation of the material to remove clot or butter, subjecting the separated serum or butter milk to solvent-extraction with a water-immiscible solvent or solventprecipitation with a water-miscible solvent, and working up of the extract or precipitate, the centrifugal separation being effected whilst the temperature is maintained within the range 12‹C to 18‹C so that undesired hormone is removed with the clot or butter whilst contraceptively active hormone is retained in the serum or butter milk.
Patent GB-1070044-A (GB)
Title: New steroid compound and novel intermediates useful in the preparation thereof
IPC: C07J71/00
Filed: 1966-03-03
Abstract: Novel compounds of the formula <FORM:1070044/C2/1> wherein X represents two hydrogen atoms or a hydroxymethylene group and Y represents an oxygen atom, or X and Y together represent the group <FORM:1070044/C2/2> are obtained by reducing the double bond in 7a  - ethylthio - 17b  - hydroxy - 17a  - methylandrost - 4 - en - 3 - one to give 7a  - ethyl thio - 17b  - hydroxy - 17a  - methyl - 5a  - androstan-3-one, reacting the latter with an alkyl formate under strong basic conditions to obtain 7a  - ethylthio - 17b  - hydroxy - 2 - hydroxymethylene - 17a  - methyl - 5a  - androstan-3-one and reacting the latter with hydrazine to give 7a  - ethylthio - 17b  - hydroxy - 17a  - methyl - 5a  - androstano - [3,2,c] pyrazole. Pharmaceutical compositions having anabolic activity and containing the above pyrazole are administered orally.
Patent GB-725727-A (GB)
Title: Improvements in electric facsimile recorders
IPC: H04N1/032
Filed: 1953-04-07
Abstract: 725,727. Copying-telegraphy. TIMES FACSIMILE CORPORATION. April 7, 1953 [May 6, 1952], No. 9440/53. Class 40 (3). In a facsimile having a stylus mounted with its tip adjacent a record blank secured to a carrier, such as a drum, abrasive means is attached to the carrier and subjects the tip of the stylus to recurrent cleaning action. As shown, an abrasive strip 34, preferably of carborundum, is located on the drum 10 between slits 12, 13 utilized for attaching the record blank 11 to the drum. In lieu of the abrasive strip, the portion of the drum between the slots 12, 13 may be roughened by sandblasting, etching or the like. Alternatively a metal insert in the nature of a cross-cut file may be attached to the drum. The stylus 16, preferably of tungsten wire, is secured to a plate 17 by a screw 18 and is held against lateral movement by passing through a slot 21 in the turned-over edge portion formed by a turnedback flange 20 of the plate 17 which is carried by a frame 22 mounted at 23 on a carriage member 24 connected by an arm 28 to a traversing screw 29. The weight of the stylus support 22 is counterbalanced by a spring 25 and a stop 26 limits the anticlockwise movement of the frame 22. The recording blank preferably comprises a paper base with a carbon coating and a superimposed masking layer which is removed by the electrical signals.
Patent GB-160820-A (GB)
Title: Improvements in high and low frequency telephone systems
IPC: H04B1/40
Filed: 1921-03-30
Abstract: 160,820. Ges. f³r Drahtlose Telegraphie. April 1, 1920, [Convention date]. Addition to 156,655, [Class 40 (v), Wireless signalling &c.]. 1'elephonic repeaters.-In a telephone system of the kind described in the parent Specification, in which a subscriber's line 22 is connected to transmitting and receiving branches of a high-frequency installation through balanced transformer circuits, the line 22 is balanced by a suitably loaded operator's set 25 instead of by an equivalent artificial line.
Patent GB-456090-A (GB)
Title: Improvements in electro-therapeutic appliances
IPC: A61N1/20
Filed: 1935-03-27
Abstract: 456,090. Electromedical appliances; eye baths. OLIVER, C. R., 61, Courtfield Gardens, Earl's Court, London. March 27, 1935, No. 9536. [Class 81 (ii)] An appliance for electromedical treatment comprises a pair of electrodes 1 made of or coated with dissimilar metals such as silver and zinc, and connected, as by screwthreading, with metallic stems 2 surrounded by insulating handles 3, which may be of different colours, the electrodes being electrically connected together. As shown, the connection is made by insulated wire 7 passing through insulating screwon caps 6 and held to the stems 2 by nuts 4, 5. Alternatively, the two electrodes may be connected one at each end to a common stem. The electrodes may be cup-shaped to receive conducting liquids or lint or the like soaked therewith, and may have smooth rounded edges. One of the electrodes may be formed into a deeper cup and may have an insulating rim to serve as an eye bath.
Patent GB-568705-A (GB)
Title: Process for colouring coal tar pitch mastic
IPC: C08K3/00
Filed: 1943-06-16
Abstract: For the manufacture of coloured coal-tar pitch mastics, a mineral aggregate and a pigment are incorporated with a coal-tar pitch having not more than 10 per cent, and preferably not more than 8 per cent, of free carbon.  The pitch may be produced from gas works or coke-oven tar or from that resulting from low-temperature carbonization processes, in which case the carbon content may be not more than 5 per cent.  The aggregate may be ground limestone, chalk, clay, slate-dust, silica, or a mixture thereof, and grit, and the pigment may be ferric or chrome oxide. Examples of compositions are: (1) coal-tar pitch with a free carbon content of 5 per cent, heavy tar oil, ground chalk, ground limestone, grit, and ferric oxide; (2) coal-tar pitch with a free carbon content of 10 per cent, ground chalk, ground limestone, grit, and ferric oxide; (3) coal-tar pitch with a free carbon content of 10 per cent, ground chalk, ground limestone, stone chippings, and ferric oxide; (4) coal-tar pitch with a free carbon content of 5 per cent, ground chalk, ground limestone, grit, ferric oxide, and chalk.
Patent GB-218726-A (GB)
Title: Improvements in plow attachments for tractors
IPC: A01B5/12
Filed: 1923-04-09
Abstract: 218,726. Morton, B. W. April 9, 1923. Disc-tool implements; adjusting and lifting parts; motors arrangement of.-A plough attachment for a tractor comprises a bar having its rear end pivotally connected to the tractor and its forward end resting upon a stationary part of the tractor, a. plough being connected to the bar in front of the pivot. The rear end of the bar 10 is pivoted on a pin 12 bolted to the draw-bar coupling member 14, and the upwardly bent front end is provided with an adjustable leg 19 resting on the front axle. A disc plough D is mounted on a braced bar 22 projecting from the bar 10 in front of the driving wheel. The bar 10 is connected by a chain to a crank arm 37 on a shaft 35<1> which may be rocked to raise the plough by means of a cranh 29 and pedal 30. A slotted plate 25 limits the vertical movement of the bar 10 and prevents lateral movement.
Patent GB-476722-A (GB)
Title: Improvements in or relating to carrier wave modulator systems
IPC: H03C3/00
Filed: 1937-04-05
Abstract: 476,722. Valve modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 5, 1937, No. 9664. Convention date, April 3, 1936. [Class 40 (v)] A single side-band is obtained from a modulating system by splitting the modulating currents into two phase displaced components and modulating them on phase-opposed carriers of the same frequency, in separate circuits ; the resultants being combined in such a manner that one side-band is substantially balanced out. Two balanced modulators 10, 12 are supplied with phase opposed carrier energy from the oscillator 40 and with modulating energy from a single side-band modulator 2. A phase displacement of 90‹ is introduced between the modulation supplied to each modulator by detuning the input circuits 4, 6 in opposite directions relative to the mean sideband frequency. To complete the phase shift necessary for the elimination of one side-band in the output circuit 20, the circuits 14, 16 are detuned, or any known means used to introduce a further 90‹ displacement. The system is said to be applicable to modulators of any known type, including phase and frequency modulators. It is stated that an exact 90‹ phase relation between the input modulating currents is not necessary. The Specification as open to inspection under Sect. 91 comprises an arrangement in which 90‹ phase-displaced carrier currents from a resistance-capacity phase-splitting circuit are supplied to the two modulators, the further phase shift in the output circuits being then unnecessary. This subject-matter does not appear in the Specification as accepted.
Patent GB-851611-A (GB)
Title: Process for the production of filamentary material from linear crystalline high polymers of propylene
IPC: D01D5/06
Filed: 1957-03-25
Abstract: Filaments are produced by extruding a homogeneous solution of a linear crystallizable high polymer of propylene through a nozzle, volatilizing the solvent from the filaments thus formed and stretching them at an elevated temperature.  The polypropylene may be prepared by the low-pressure polymerization of propylene in the presence of catalysts prepared from organo-metallic compounds and compounds of metals of Group IVA, VA and VIA of the Periodic Table and preferably has an intrinsic viscosity of 0,5-5, as measured in solution in tetrahydronaphthalene at 135 DEG C.  Solutions containing 15-80% by weight of polypropylene are preferably used, suitable solvents being hydrocarbons, e.g. the various fractions of petroleum, petroleum jelly, paraffin, toluene, xylene, tetrahydronaphthalene, decahydronaphthalene, mixtures of diphenyl and diphenyl ether, halogenated hydrocarbons, e.g. tetrachloroethane, chlorobenzene, orthodichlorobenzene, alpha-chloro-naphthalene and ethylene dibromide, ketanes, e.g. methyl-ethyl-ketane, cyclopentanone and cyclohexanone, cetyl alcohol, cyclohexanol, butyl acetate, isoamyl acetate, ethylene glycol, triethylene glycol, butylene glycol, nitrobenzene, benzonitrile and thiophene.  The polypropylene is preferably dissolved in the solvent at 100 DEG  to 170 DEG C. and extruded in that temperature range.  Stabilizers, e.g. diphenyl ethyl phosphite, dibutyl-tin dilaurate and dibutyltin dibutyl mercaptide may be added in an amount of 0,05 to 0,5% based on the weight of the solution.  The solvent may be removed from the filaments by evaporation in a stream of hot gas, e.g. air or nitrogen, and the filaments are preferably stretched at 80-150 DEG C. with a stretch ratio of 1 : 3 to 1 : 12.
Patent GB-328404-A (GB)
Title: Improvements in convertible bodies for automobiles and the like
IPC: B62D47/00
Filed: 1929-03-26
Abstract: 328,404. Bitetto, C. C. F. di. March 26, 1929. Hoods.-A road vehicle with front and rear seats and a windscreen is provided with a hood or top which is displaceable forwardly and rearwardly and adapted to uncover the front seats when it covers the front seats only the versa. As shown in Fig. 1 the rear part 2 of the hood is slidable on the body from the position shown to a position in which it covers the front seats only the front part of the hood being withdrawable into the rear part. The front part comprises a flexible cover 12, Fig. 5, rolled up in a housing 11 in the rear part of the hood which also carries arms 14, Fig. 4, hinged or otherwise displaceable to bridge the gap between the rear part and the windscreen. Fig. 8 shows the rear part of the hood comprising two parts 17, 18 hinged together and adapted to be folded down as shown in dotted lines. In another form the front and rear parts of the hood are separate and distinct, a separate portion being introduced to bridge the gap when the. rear portion is displaced rearwardly. Fig. 13 shows the rear portion carried by pivoted arms 37 and a rear panel 28 hinged as shown the boot of the body being provided with side pieces 9 displaceable to allow the rear part 2 to be swung into either position.
Patent GB-1421588-A (GB)
Title: Low-noise electrical space heating appliance
IPC: F24H3/04
Filed: 1973-02-28
Abstract: 1421588 Centrifugal fans I LAING 28 Feb 1973 [2 March 1972] 9705/73 Heading F1C [Also in Division F4] A space heater comprises a friction type centrifugal fan impeller 4 and an electrical resistance heating element 8 upstream of the impeller 4. The impeller comprises spaced annular members or a helically coiled aluminium strip. The annular members or the turns of the strip are spaced apart by washers or flanges around bolts 5. The heating element 8 is formed as a helical strip or a sinuous strip arranged in annular form. The turns of the strip defining the impeller 4 may form frustoconical nested surfaces and the heating element may be surrounded by the impeller 4. The fan motor 1 is air cooled and the impeller 4 may be surrounded by a volute casing.
Patent GB-163875-A (GB)
Title: Spark plugs
IPC: H01T13/46
Filed: 1920-04-07
Abstract: 163,875. Flatau, L. S. April 7, 1920. Sparking-plugs. - An annular spark-gap is formed between the part 11 of the casing and the hollowed end 15 of the central electrode. The part 11 is preferably integral with the casing; a terminal portion 14 located within the inner end of the insulator is preferably screwed on the end of the stem 13, and in addition to being hollowed has a bevelled edge.