baber/WOPTO huggingface dataset:
Patent GB-586539-A (GB)
Title: Aromatic carbonates and polymers thereof
IPC: C08F18/08
Filed: 1944-11-14
Abstract: Esters having the general formula <FORM:0586539/IV/1> in which R is an arylene radical of the benzene series and X is hydrogen, alkyl or halogen are obtained by reacting an allyl, 2-alkyl allyl or 2-halo allyl ester of a hydroxy aromatic carboxylic acid of the benzene series with an allyl, 2-alkyl allyl or 2-halo allyl haloformate, and the reaction is preferably effected at -15 DEG  to +15 DEG  C. when the acid acceptor is strongly basic, or at 100-110 DEG  C. in the absence of an acid acceptor or in the presence of a weakly basic one such as calcium carbonate.  An acid acceptor may be present to take up the hydrohalic acid generated.  Specified haloformates are 2-methallyl, 2-ethallyl, 2-propallyl, 2-butallyl, 2-chlorallyl and 2-bromallyl chloroformates and bromoformates.  Specified esters of aromatic acids are the allyl esters of salicylic acid, m- or p-hydroxy-benzoic acid, the hydroxy toluic acids or a hydroxy p-isopropyl benzoic acid.  In example (1) allyl chloroformate is added dropwise to a solution of allyl salicylate in pyridine maintained at -10 DEG  C. producing allyl #s-carballoxyphenyl carbonate.  Polymerization products.-The compounds obtained as above may be polymerized or copolymerized at temperatures up to about 100 DEG  C., preferably at 60-90 DEG  C., in the presence or absence of a solvent such as dioxane and, if desired, by the use of ultra-violet light or with a small amount of a polymerization catalyst such as benzoyl peroxide.  Copolymers are obtained by interpolymerization of two or more of the above esters or of mixtures of these esters with other monomers, particularly monovinyl and monovinylidene compounds, e.g. styrene, acrylonitrile, methylacrylonitriles, methyl methacrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate, vinyl chloride and vinylidene chloride.  The esters may also be copolymerized in aqueous emulsion in the presence of an emulsifying agent, e.g. sodium oleate, being present to an extent of 0.1 to 20 per cent by weight of a mixture of vinyl chloride or vinylidene chloride.  In examples: (2) glass cloth is treated with the product of (1) above in the presence of benzoyl peroxide, when the polymer is obtained as a laminate; (3) a cast polymer is obtained from allyl o-carballoxyphenyl carbonate by polymerizing in the presence of 5 per cent benzoyl peroxide for 22 hours at a temperature of 65 DEG  C. The Specification as open to inspection under Sect. 91 comprises also an alternative process consisting in reacting an allyl hydroxybenzoate with phosgene and treating the resulting chloroformate with an allyl alcohol.  This subject-matter does not appear in the Specification as accepted.
Patent GB-913880-A (GB)
Title: Improvements in or relating to domestic centrifuge machines
IPC: D06F49/00
Filed: 1960-06-28
Abstract: 913,880. Washing and peeling vegetables. YOUNG, S. G. Sept. 27, 1961 [June 28, 1960], No. 22607/61. Class 28 (2). [Also in Group XIII] A portable spin-drier which may be utilized to rinse and peel vegetables comprises a downwardly open drum 2 having legs 3 forming a stand 1 for a downwardly open drum 14 rotatably mounted therein, having a detachable perforated cover 4. The drier is inverted for the loading operation at which time it is adapted to be supported on projection 12, and a shaft 13 of the driving gear 9, 10, which gear is adapted for manual rotation by a handle 11. The drier may also be driven by a reciprocating handle embodying an Archimedian screw and ratchet, or be power-driven by an electric motor, or a turbine operated by the pressure of the domestic water supply.
Patent GB-277171-A (GB)
Title: Improvements in or relating to the wheels of vehicles
IPC: B60B7/02
Filed: 1926-09-14
Abstract: 277,171. Dunlop Rubber Co., Ltd., and Wright, J. Sept. 14, 1926. Spoke covering discs are secured by nuts 9 on collars 5 through which the wheel spokes 7 are passed. The discs and collars are formed of aluminium or other light metal.
Patent GB-316310-A (GB)
IPC: F16H41/02
Filed: 1929-07-23
Abstract: 316,310. Berliner Maschinenbau- Akt-Ges. vorm. L. Schwartzkopff, and Huwiler, A. July 27, 1928, [Convention date]. Hydraulic transmission of power.-A driving- arrangement for machines of variable load comprises a centrifugal pump 2 delivering to a jet turbine 12 through a pipe 5 connected to a weight or gas-loaded accumulator 7. The turbine cups are double-sided and two nozzles 11, 11<a> are provided to permit reverse drive.
Patent GB-734155-A (GB)
Title: Improvements relating to therapeutic preparations containing isonicotinic acid hydrazide, and their use
Filed: 1953-08-17
Abstract: A therapeutic preparation for the treatment of tuberculous diseases comprises 4 to 15 parts of isonicotinic acid hydrazide and 1 to 3 parts of pyridine-3-aldehyde thiosemicarbazone, preferably in admixture with a pharmaceutical carrier.  The active ingredients may be in the form of the free bases or acid salts such as hydrochloride, sulphate, phosphate and ethane disulphonate.  Per unit dosage, the combined active ingredients are used in quantities of 10 to 200 mg. tablets containing the active ingredients, lactose, talc, starch and gelatine are described.
Patent GB-336027-A (GB)
Title: Improvements in hockey sticks and the like
IPC: A63B59/12
Filed: 1929-07-23
Abstract: 336,027. Gooch, A. D., and Wisden & Co., Ltd., J. July 23, 1929. Hockey sticks.-A stick for hockey, baseball, or like games has a central member S that is spliced to or formed integral with the striking head H and has two faces formed in the direction of the plane of the head, a plurality of strips of cane C or other resilient material being attached to each face. The stick is shaped and bound in the usual manner.
Patent GB-1468910-A (GB)
Title: Control arrangements for power operated sliding doors
IPC: E05F15/14
Filed: 1975-05-21
Abstract: 1468910 Automatic controls for powered sliding doors EXPRESS LIFT CO Ltd 21 May 1975 [21 May 1974] 22681/74 Heading E2M A power operated sliding door arrangement has means which detects an object within a predetermined distance from the door and produces an output signal to stop or reverse the door, a control element for varying the sensitivity of the detecting means means producing a reference signal when the door approaches to a distance from a reference member, and means to actuate said control element in dependence on the time interval between the generation of the reference signal and the output signal from the detecting means when the reference member is detected, the sensitivity of the detecting means being thereby maintained constant. Two sliding lift doors 1, 2, Fig. 1, are operated by an electric motor (within casing 6) and plastics edge members 15, 33 each house two parallel conductors 34 which form part of a capacitive detector means including a detector circuit 36, Fig. 5, and variable capacitor 35 by which the sensitivity of the circuit is adjusted. The output from circuit 36 produced when an object is within a predetermined distance i.e. 6 inches from a door edge changes the capacitance between the conductors 34 and a relay 37 is actuated which stops or reverses the lift doors. When the doors come within 8 inches of each other (the reference member in this case being the other door) a microswitch (46, Fig. 3, not shown) in door 1 is actuated by a cam (47) to open contact 46A and isolate the relay 37. At the same time a reference signal from the microswitch opens a contact 46B which triggers a monostable circuit 38, the trailing edge of the pulse from which triggers a further monostable circuit 39. When the detector on door 1 detects the other door the output signal from 36 is fed to the outputs of monostable circuits 38 and 39. Comparison is made between the relative times of arrival of the signal from 36 at the respective circuits 38, 39 and an output, indicative of the departure of the sensitivity of the detector from the preset level, is fed, via a circuit 43, to a motor actuating a gear box 45 which applies corrective adjustment to capacitor 35. The sensitivity is preset by adjustment of the pulse length of circuit 38; the required sensitivity occurring when the arrival of the signal from 36 coincides with the trailing edge of the pulse from 38. The edge members 15, 33 are in addition sensitive edge devices which stop or reverse the door on contacting an obstacle. In single door arrangements the reference member can be the door frame which the door approaches on closing. Reference has been directed by the comptroller to Specifications 1227197 and 1227198.
Patent GB-964492-A (GB)
Title: Improvements in securing inserts in sheet material
Inventor: MCGEE EDWARD CHARLES
IPC: B23P19/06
Filed: 1963-06-07
Abstract: 964,492. Perforating. BELLING & LEE Ltd. June 7, 1963, No. 22723/63. Headings B3U and B3W. [Also in Division B5] A method of securing an insert of rigid material having at least one flat surface in a rigid sheet of material consists in contacting the flat surface of a smooth-walled part of the insert with a face of the sheet and using the insert, in conjunction with a die which has a cutting edge of substantially the same contour as the insert, to perforate the sheet, the insert being also formed with a head portion having at least one angle in the cross-section configuration thereof which is normal to the path of travel of the insert into the sheet material, which cross-section is greater than that of the smooth wall part, pressure being applied to the insert until a part of the head portion is forced into the part of the sheet immediately adjacent the aperture formed by the smooth-walled part of the insert. The insert comprises a circular smooth-walled part 1, an undercut 2, an hexagonal head 3 and a threaded bore 5. The apparatus to secure the insert comprises a die 14 and a punch 9 which has six staking teeth 12 and a spring-loaded pilot pin 7. The insert is located on the pin 7, the sheet material is placed on the die and the punch 9 is lowered so that the insert shears out a piece of material. Movement of the punch continues until the teeth 12 indent the sheet material to force it into the undercut 2, and until the head 3 penetrates the sheet. The indents may be across the corners of the hexagon or along the faces of the hexagon. Specification 776,373 is referred to.
Patent GB-189233-A (GB)
Title: Improvements in calling devices adapted to be operated by wireless signals
IPC: H04L15/26
Filed: 1921-08-26
Abstract: 189,233. Davis, W. J. Aug. 26, 1921. Electric selectors.-An alarm is actuated only on the receipt of signal impulses consisting of a regular series of dashes of definite length and spacing, for example three dashes each of four seconds duration, with an interval of one second between consecutive dashes. Provision is made for a limited error in timing either in the dash or in the interval. Signals outside the predetermined sequence and the permitted error margin, reset the apparatus without ringing the alarm. Alternatively the apparatus can be arranged to respond to intervals of predetermined length. The first signal opens a contact B and de-energizes an electromagnet C, the armature of which is so controlled by a spring c and dash pot D that it closes a spring contact E after three seconds, and a fixed contact F after five seconds of persistent de-energization. The contact E energizes a second delay-action relay H, and also an electromagnet J which causes a pawl K to turn a ratchet-wheel k through one tooth. Three such impulses bring a contact o, inset on a disc O at the axle L under an arm Q, thereby closing the circuit of an alarm bell R, which is kept ringing by the closure of a holding-contact v. If the signal impulse is prolonged beyond five seconds, the contact F is closed to energize a magnet u through a circuit which includes a contact T. The magnet u withdraws the pawl K and detent N from contact with the wheels k, n, Fig. 2, and the shaft L is re-set by a coiled spring l. The relay H measures the duration of the space between consecutive dashes. It is de-energized directly the contact E is broken at the end of any given signal. This contact E is not re-made until three seconds after the impact of the succeeding impulse. If the total interval during which the relay H is left de-energized exceeds five seconds, the contact I is made, and the magnet n is actuated to re-set the wheels and shaft L. Contacts W, X are inserted to prevent jamming signals from actuating the alarm bell by giving rise to rapid irregular vibrations of the armature of the first relay C.
Patent GB-1519491-A (GB)
Title: Phase comparator
IPC: G01R23/15
Filed: 1975-05-23
Abstract: 1519491 Phase comparator MOTOROLA Inc 23 May 1975 [5 Aug 1974] 22791/75 Heading H3A In a phase comparator a reference pulse train J and a pulse train H are applied to circuitry 20 which generates pulse trains L, N, M to successively enable gates 60, 63, 70 so that a voltage source V S  is connected to a voltage store (e.g. capacitor 62) for a time proportional to the amount pulses J lead pulses H in phase, the stored voltage being sampled by pulses N and then removed by pulses M. Successive voltages V 62  on capacitor 62 are accumulated on a capacitor 65, the voltage on which may be applied to the variable frequency source (e.g. a voltage controlled oscillator). Pulses J are obtained via flip-flops 11-16 and a gate 17 from a pulse train A and are applied with pulses H to a flip-flop 31. The H pulse length is slightly less than half the J pulse length. When the leading edge of an H pulse lies within a J pulse (I. Fig. 2), the width of pulse L is such that capacitor 62 is charged to between O and V S . When the H pulse leading edge follows the J pulse trailing edge (i.e. the H frequency drops), pulse L is longer and capacitor 62 charges to its maximum V S  (II, Fig. 2). When the H pulse leading edge precedes the J pulse leading edge (i.e. the H frequency rises), no L pulse is generated and capacitor 62 is not charged (III. Fig. 2). In these latter two cases, gates 33. 34 etc. provide set and reset pulses R. S to predetermined ones of flip-flops 11-16 to force the next J pulse to appear at approximately the correct time to coincide with the centre frequency of pulses H (thus the comparator cannot lock onto harmonics). Gates 60, 63 70 may be semiconductor transmission gates and the comparator circuit may be formed as an IC using CMOS components.
Patent GB-839986-A (GB)
Title: Improvements in and relating to cathode ray tube apparatus
IPC: H04N9/24
Filed: 1956-07-24
Abstract: 839,986. Colour television. MORLE, C. W. (Philco Corporation). July 24, 1956, No. 22879/56. Drawings to Specification. Class 40 (3). The description is identical with that appearing in Specification 753,441 with reference to Figs. 1, 2, 3, 7 and 8, but the claims relate to the feature of deriving from the cathode-ray tube screen a separate indexing signal for each colour and for combining the signals to produce a single signal representative of the algebraic sum of the individual phase variations. Specification 639,980 also is referred to. Reference has been directed by the Comptroller to Specifications 753,441, 753,443 and 809,334.
Patent GB-1276277-A (GB)
Title: 2-chloroethane-(thiono)-phosphonic acid amido compounds, processes for their preparation, and their use for the regulation of plant growth
Inventor: HOFER WOLFGANG
IPC: C07F9/42
Filed: 1971-04-19
Abstract: 1276277 Plant growth regulants FARBENFABRIKEN BAYER AG 19 April 1971 [4 March 1970] 22932/71 Heading C1B [Also in Division C2] A plant growth regulating composition comprises as active ingredient a compound of Formula I where X and Y are oxygen or sulphur, R is hydrogen or alkyl and R<SP>1</SP> is alkyl, or if R is hydrogen or Y is sulhpur, R<SP>1</SP> may be phenyl, optionally substituted by hydroxy, alkyl, halogen or nitro, together with a suitable carrier, and optionally other conventional additives.
Patent GB-351787-A (GB)
Title: Improvements in contact fingers for electric machines and apparatus
IPC: H01H1/46
Filed: 1930-07-30
Abstract: 351,787. Contact-members for switches. PEDRAZZO, G., 3 bis, Via Cernaia, Biella, Italy. July 30, 1930, No. 22972. Convention date, July 30, 1929. [Class 38 (v).] A contact-finger 10 is pivoted to a holder 1 by means of bolts 11, 14 having ball-shaped ends which fit into recesses in the holder to give a universal movement. A spring 20 held at one end by a nut 21 on a bolt 17, fixed to the holder 1, presses on the contact-finger through a pair of convex and concave washers 18, 19. The finger is clamped to a square operating-spindle 4 by means of a strap 2 and bolts 3. A stranded conductor 5 serves to connect the finger with the holder. The spring may be situated beneath the holder 1 and pull the contact-finger downwards through the medium of a movable bolt and a pair of co-operating washers.
Patent GB-623179-A (GB)
Title: Improvements in the manufacture of liquid graphite-containing lubricants
Filed: 1945-09-06
Abstract: Graphited lubricants remaining liquid at low temperatures are prepared by incorporating a comparatively concentrated dispersion of colloidal graphite in mineral lubricating oil, in a hydrocarbon oil which has been obtained as follows: (a) a distillation fraction or mixture of distillation fractions having a density between 0.82 and 0.85 at 15 DEG  C., a pour-point below -80 DEG  C., a viscosity at -20 DEG  C. of 5 to 7 centistokes, at 0 DEG  C. of 3 to 4.5 cs., and at -35 DEG  C. of 1 to 2.5 cs. is prepared from a naphthenic base crude petroleum; (b) after refining by the usual methods the fraction or mixture of fractions is strictly neutralized with alkali, e.g. 12 per cent soda lye, and washed one or more times with water to remove all residual electrolytes.  The hydrocarbon oil may be a mixture of 90 parts by weight of a fraction of naphthenic crude petroleum having a density of 0.820 to 0.830 at 15 DEG  C., a pour-point below -80 DEG C. and a distillation range of 180 DEG  C. to 250 DEG  C., with 10 parts of a naphthenic fraction having a density of 0.920 to 0.930, a maximum pour-point of -30 DEG  C. and a viscosity of 250-300 cs. at 35 DEG  C.  Both fractions may be heated to about 40 DEG  C. before being mixed, and may be refined separately or after mixing.  The final stage of the refining of the fraction must always be a filtration, either through a porous medium or through a bed of some adsorptive material such as a granular fuller's earth. Specifications 6463/10, [Class 91], 482,630, 527,974 and 536,872 are referred to.  The Specification as open to inspection under Sect. 91 comprises also a lower limit of 60 DEG  C. for the flash-point of the fraction or mixture of fractions and the addition of unspecified stabilizing substances or protective colloids for improving the suspension properties of the graphite dispersion.  This subject-matter does not appear in the Specification as accepted.
Patent GB-716502-A (GB)
Title: An instrument for comparing or measuring the tension of power-transmission belts
IPC: G01L5/06
Filed: 1951-10-04
Abstract: 716,502. Dynamometers. ANDERSON, W. W. Oct. 1, 1952 Oct. 4, 1951], No. 23113/51. Class 106 (2) An instrument for comparing or measuring the tension of powertransmission belts comprises a pair of telescopic and spring-loaded parts a, b, one or each of them having at one end a longitudinally adjustable abutment p, and means h, e, for indicating relative movement of the said parts. The parts a, b may be of tubular form, the outer part a carrying a scale e on which is pivoted a spring-loaded pointer h ; the inner part b having a tongue f in engagement with the pointer h. Lock nuts q are provided for use when setting the abutments p at the required distance apart.
Patent GB-1480580-A (GB)
Title: Transesterification of esters of acrylic or methacrylic acids
IPC: B01J27/00
Filed: 1976-06-04
Abstract: 1480580 (Meth)acrylic acid esters DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT 4 June 1976 [5 June 1975 23149/76 Heading C2C (Meth)acrylic acid esters are prepared by transesterification in the presence of at least one alkali metal cyanide (0À05 to 10% by weight based on the total reactants) catalyst and a polymerization inhibitor. Potassium cyanide is preferred and the alcohols or glycols may be of commercial quality. Methyl and ethyl esters are the preferred starting materials and the reacting alcohols may be monohydric primary, straight or branched chain aliphatic alcohols, polyhydric alcohols, cycloaliphatic, aromatic and ether or amino alcohols. Examples describe the reaction of acrylates and methacrylates with n butanol stearyl alcohol, neopentyl glycol, cyclohexanol, ethylene glycol monomethyl ether, and ethylene glycol.
Patent GB-1047134-A (GB)
Title: Picture storing device
Inventor: HOOD ARCHIBALD
IPC: A47F7/00
Filed: 1962-06-16
Abstract: 1,047,134. Suspending pictures. SCULTHORPS Ltd. Sept. 11, 1963 [June 16, 1962], No. 23273/62. Heading A4B and A4U. A device for suspending and storing pictures comprises a tubular frame 1 suspended from and movable along an overhead rail 2 by means of pulley assemblies 3, 4 and guided at its base by shoes 5, 6 which move in a flow channel 7. Each side of the frame 1 has attached thereto one of four strainer bars 8-11 between which is stretched wire mesh 12 on which the pictures are hung by S-shaped hooks. In an alternative embodiment (not shown) bars 8-11 and the mesh 12 are replaced by lateral horizontal bars or wires. The frame may have wheels running on rails instead of the shoes 5, 6.
Patent GB-683504-A (GB)
Title: Improvements in the production of polyurethanes
IPC: C08L75/00
Filed: 1950-09-22
Abstract: Polymethanes are prepared by forming an acid dispersion of a bis-chloroformate, preferably dissolved in an inert solvent, water and a diamine, and then adding alkali to bring the pH above 7, thereby causing poly condensation of the reactants, the polymer precipitating as a finely divided solid.  The initial pH is preferably between 3 and 5 and the final pH preferably above 10. The Specification lists a large number of diamines (including diamines with secondary amine groups) and bis-chloroformates as suitable reactants.  The reactants are preferably present in equimolecular proportions but this is not essential for high polymers.  Specified solvents for the bischloroformate are benzene, toluene, xylene, chlorinated hydrocarbons, octanes, naphthenes and petroleum fractions.  Dispersing agents, a list of which is given, may be used, in particular N-butyl-N-lauroyl-b -amino ethane sodium sulphonate. Suitable acids and alkalis for creating the required pH conditions are also listed.  The reaction is preferably performed at low temperatures, i.e. 30 DEG  to -20 DEG  C., antifreeze agents being used if necessary.  Mixtures of diamines and/or bischloroformates may be reacted to give mixed polymethanes.  A pigment may be incorporated in the reaction mixture, e.g. titanium dioxide and Franconia Blue. In examples: (1) to (4) and (7) to (9) tetramethylene diamine and 1,4-butane - diol - bis - chloroformate were reacted under various conditions; (5) tetramethylene diamine, ethylene diamine and 1,4-butanediol-bis - chloroformate were co - condensed; (6) ethylene diamine and 1,4-butane-diol-bis-chloroformate were reacted.  Several of the polymers were drawn into fibres, the fibres being capable of cold-drawing.  Specification 615,884 is referred to.
Patent GB-1207936-A (GB)
Title: Improvements in or relating to beverage mixing and dispensing machines
Inventor: COTTINGHAM RUFUS FRANK
IPC: B67D1/00
Filed: 1969-05-07
Abstract: 1,207,936. Agitator. "COTTO" (SCUNTHORPE) Ltd. 7 May, 1969, No. 23328/69. Heading B1C. [Also in Division B8] A mixing bowl 1 for a beverage vending machine has an agitator 2 with an upright member 3 projecting into the discharge outlet 10, and a cross-member 4; beverage constituents mixed in the bowl impact the cross-member 4 and cause the agitator to oscillate about the contact points 11, see Fig. 2 (not shown). The agitator may be, e.g. of stainless steel or heatresistant rigid plastics material.