baber/WOPTO huggingface dataset:
Patent GB-480617-A (GB)
Title: Process for the introduction of aryl groups into ª -ª -unsaturated carbonyl compounds and their derivatives
IPC: F04C28/26
Filed: 1936-09-05
Abstract: a  - b  - Unsaturated non - quinonoid carbonyl compounds such as aldehydes, ketones, or carboxylic acids, and also their derivatives in so far as they contain a hydrogen atom on the a -carbon atom are reacted with aromatic diazonium salts or compounds convertible thereinto such as acylnitrosamines in dilute inorganic acid or in organic acid solution, and at elevated temperature so that nitrogen is split off and the a -hydrogen atom in the carbonyl compound is replaced by an aryl group.  Quinonoid compounds are defined as compounds with two carbonyl groups and two double bonds in one cyclohexane ring.  There are obtained from benzal acetone or cumarin with diazo compounds a -acetylstilbenes or 3-arylcumarins respectively.  In the case of certain a -b -unsaturated carboxylic acids such as cinnamic acid, the carboxyl group is split off as carbon dioxide during the reaction. The arylated a -b -unsaturated carbonyl compounds are sometimes obtained as their hydrogen halide addition products and are treated with agents splitting off hydrogen halide, e.g. by heating with sodium acetate in glacial acetic acid. An addition of copper or copper salts favours the reaction, which can be carried out in strong acetic acid, aqueous-alcoholic or aqueous-acetone solution with the addition of alkali acetates or alkali salts of other weak acids such as the acid to be arylated. Other solvents such as methylene chloride or acetylene tetrachloride may be used.  The presence of negative substituents in the diazo compound is favourable.  In examples: (1) p-nitrobenzene diazonium chloride is reacted with cumarin in aqueous-acetone solution in presence of sodium acetate and copper sulphate to give 3-p-nitrophenylcumarin; if the diazo compounds from p - chloraniline, b  - naphthylamine, p - aminobenzoic acid or sulphanilic acid are used there are obtained 3-p-chlorphenylcumarin, 3-b -naphthylcumarin, 3-phenyl-cumarin-41- carboxylic acid and 3-phenyl-cumarin-41-sulphonic acid; (2) p-chlorbenzene diazonium chloride is reacted with cinnamic acid as in (1) to give small quantities of a -p-chlorphenylcinnamic acid but mainly p-chlorstilbene; if crotonic acid is used, a -p-chlorphenylcrotonic acid is the chief product, but p-chloropropenylbenzene is also obtained; (3) p - chlorbenzene diazonium chloride is reacted with benzal acetone as in (1), but splitting off hydrogen halide from the product to give a -acetyl-p-chlorostilbene; (4) p-chlorbenzene diazonium chloride is reacted with cinnamic aldehyde as in (1) to give a -p-chlorphenyl cinnamic aldehyde; (5) p-chlorbenzene diazonium chloride is reacted with cumarin as in (1) but in absence of copper or a copper salt, to give a small yield of 3-p-chlorphenyl-cumarin; the yield is increased if copper chloride is present.
Patent GB-1173357-A (GB)
Title: Paper machine press with lump clearing
IPC: D21F3/04
Filed: 1967-05-25
Abstract: 1,173,357. Papermaking. BELOIT CORP. 25 May, 1967 [6 July, 1966], No. 24340/67. Heading D2A. In a press section, press rolls form a nip to receive and dewater a web, a rotatable backing means in advance of the nip supports the web and a lump-clearing means is supported close to the surface of the web and opposite the backing means so that it can be rotated in a direction opposite that of the web travel to remove lumps from the web and prevent them entering the nip, but without engaging the web. The lump-clearing arrangement may be mounted between successive presses in a press section. As shown, a travelling web W of wet paper, supported on a felt F-1, passes through the nip N-1 between press rolls 10 and 11, and over a backing roll 14 which rotates with the felt. The felt then turns, down, and the paper passes through an open draw on to a second felt F-2 and through a second press (Fig. 2, not shown). A lump-clearing roll 15 is mounted above and close to the roll 14 and is rotated in the direction opposite to the movement of the web, and preferably at an equal or greater speed. The lower roll of each nip may be grooved. The Lump-clearing roll may be movably supported so that it can be moved away for threading and cleaning the web. A shield may be placed following the lump-clearing roll to prevent the web being carried round the roll. The lump-clearing roll may be made of fibre glass.
Patent GB-670623-A (GB)
Title: Improvements in or relating to frequency stabilization methods and systems employing stark effect
IPC: H03L7/26
Filed: 1948-09-17
Abstract: 670,623. Automatic frequency control systems. RADIO CORPORATION OF AMERICA. Sept. 17, 1948 [Jan. 31, 1948], No. 24426/48. Class 38 (iv). In an arrangement for stabilizing the frequency of an oscillation generator using the absorptive properties of gases in the microwave region, the frequencies of the absorption spectral lines are shifted by applying a field to the gas. In one arrangement the output of a reflex klystron 12 passes through a guide 11 to a gas chamber 10. An electrode 16 in this chamber may set up a field to shift the spectral lines, for instance by connecting it to a source 17 of alternating current of low frequency which may be given a steady bias by battery 18. The radiation which passes through the gas chamber is detected by a crystal rectifier 9 and, through an amplifier 23 tuned to the frequency of source 17 and a balancing network, a control voltage is imparted to reflector electrode 15 in the klystron. The apparatus may be adapted to control a magnetron by utilizing the control voltage to regulate an electron beam in one cavity thereof. In further modifications, two gas chambers are used, tuned to slightly different frequencies and with their outputs differentially combined or the gas chamber is in the feed-back path of a klystron. Specifications 640,848, [Group XXXVI], and 654,000, [Group XL (c)], are referred to. Reference has been directed by the Comptroller to Specification 663,065.
Patent GB-263546-A (GB)
Title: Improvements in or relating to haymaking machines
IPC: A01D78/02
Filed: 1925-10-01
Abstract: 263,546. Nicholson, A. C. Oct. 1, 1925. Haymaking .-A haymaking-machine of the type in which forks 25 rotatable about an axle 17 lying transversely of the direction of travel are driven through transmission gearing by a ground wheel of the machine has pawl and ratchet mechanism interposed between the transmission gearing and the forks. The ground wheel 10 carries a toothed wheel 12 at the inner end of its boss and rotates about a fixed axle 13 secured to an axle box 14. The shaft 17 is screwed into a boss 16 on thei box 14 and carries an inner sleeve 18 having a pinion wheel 19 engaging the wheel 12 and at its other end a ratchet wheel 20. An outer sleeve 21 can rotate over the sleeve 18, this sleeve also carrying a gear wheel 22 that is driven from the wheel 12 through an idle gear 24 and a ratchet wheel 23 at its inner end. The forks 25 are carried by flyers 26, 27 secured to a sleeve 28, the boss of the flyer 26 carrying two pawls 30, 31, adapted to be thrown, by a single hand-lever 35, into engagement with the ratchet wheels 20, 23 respectively. If the lever is placed in mid position the pawls are held free from the ratchets and the forks are idle. A spring holds the head lever in notches marking different positions. The housing comprising the axle box is provided with an extension surrounding the sleeves and extending into a rim on the boss 26 thus enclosing and protecting the mechanism for driving the forks.
Patent GB-741455-A (GB)
Title: Improvements in or relating to reciprocating pumps and motors
Inventor: PEEL LESLIE
IPC: F01B3/06
Filed: 1953-09-04
Abstract: 741,455. Fluid-pressure engines. PEEL, L. Aug. 31, 1954 [Sept 4, 1953], No. 24487/53. Classes 122(2) and 122(3) [Also in Group XXVIII] In a reciprocating compressed air motor, the cylinders 5 have oblique ends spaced apart to form a cam slot 7 for a pin 8 rigid with the piston 6: the pin 8 also engages an axial groove 9 in a drive transmission member 10 rotatably mounted about the cylinders 5 and between the cylinder supports 11 being separated therefrom by spacing washing 12. The piston has grooves 17 at each end which co-operate with ports 15, 16 communicating with inlet and outlet chambers 13, 14 respectively. One set of ports 15. 16 may be employed and a connection with the remote working space is effected by a drilling through the piston to a second groove on the piston adjacent the ports.
Patent GB-466323-A (GB)
Title: Improvements in or relating to electromagnetically operated relays, axle counters, key locking devices and the like apparatus
IPC: B61L1/16
Filed: 1936-09-08
Abstract: 466,323. Electromagnetic relays. VEREINIGTE EISENBAHN-SIGNALWERKE GES. Sept. 8, 1936, No. 24532. Convention date, Sept. 16, 1935. [Class 38 (v)] A circuit arrangement for an electromagnetic relay or other apparatus such as axle-counting mechanism in a railway installation comprises two windings and a condenser through which the relay &c. is operated, the condenser being permanently connected in series with one winding and in parallel with the other and arranged to be charged through the series-connected winding when a control contact in the circuit is closed and to be discharged through the parallel-connected winding when said contact is opened. As shown in the Figure no current normally flows through the relay windings 1, 2 but when the treadle switch 5 is closed a charging current for the condenser 4 flows through the seriesconnected winding 1. When the switch 5 is opened the condenser at once discharges through the parallel-connected winding 2 which assists the winding 1 to produce the desired operation. At high speeds the reinforcing action of the winding 2 thus follows the action of the winding 1 so closely that certain operation of the relay &c. is ensured. A resistance 3 limits the current if an axle remains standing on the switch 5 and a rectifier 6 blocks the opposing field which would be induced in the winding 2 during the charging of the condenser.
Patent GB-587305-A (GB)
Title: Improvements in or relating to vulcanising machines for repairing motor vehicle tyres and other articles made of rubber or rubberised material
IPC: B29C35/00
Filed: 1944-12-08
Abstract: 587,305. Electric vulcanizers. STEINER, L Dec. 8, 1944, No. 24589. [Class 39 (iii)] [Also in Group XXXVII] The heating resistance of a heating and pressure element for vulcanizing machines is controlled by a manually operated switch device adapted to bridge a pair of contacts on the surface of the body part of the element, the device being enclosed in a casing which is removable from the body part, the heating resistance being mounted on a hot plate and likewise removable. The switch is closed, Fig. 8, in a similar manner to that described in Specifications 522,543 and 533,816, [both in Group XXXVII], by dropping a fusible element 21 through a shaped aperture 22 and then depressing and releasing a handle 14 so that a metal bridge piece 19 carrying contacts 20 may bridge contacts 4 on the hot plate 2. When the heat produced is sufficient, the element 21 fuses and the switch opens. The switch device and its casing 12 are readily removable from the body 1 by lifting the casing by finger pieces provided on its side walls. The resistance is mounted on the hot plate 2 and the circuit of its winding is completed through the contacts 4, 20 and bridge piece 19, and a safety fuse strip 6 carried by copper clips 7 and provided with an insulating arc-preventing member 8. Contact pins 5 on the resistance unit fit into contact pins 10, which are fixed to the body 1 and protected by a cowl 9. A sole plate, Figs. 1 and 2 (not shown) covers the bottom of the hot plate 2.
Patent GB-158304-A (GB)
Title: Improvements relating to devices for connecting and disconnecting ropes cordage and the like
IPC: B64D17/38
Filed: 1919-10-09
Abstract: 158,304. Calthrop, E. B. Oct. 9, 1919. Hooks, automatic-release and safety. - A disconnectable coupling particularly for connecting a load to a parachute, comprises a U-shaped casing 1, Fig. 3, to which the parachute is permanently connected by a rope through an eye 2, and a pair of spring detents 7, pivoted at 6, and supporting a ring or the like 17 at the end of a load-rope. Disconnection is effected by depressing a slide 12 against a spring 16, thus disengaging the teeth 11 on the slide 12 from teeth 10 on levers 5 pivoted at 6. Inclines 15 on the slide 12 act on inclines 14 on the levers 5, which are thus forced outwards. The upper surfaces of the detents 7 are curved eccentrically to their pivots 6 so that the weight on the load-rope keeps the detents closed till the levers are forcibly swung out by hand, the detents being withdrawn into the casing and the load-rope thus released. In an automatic device, Fig. 5, the tension on the ropes causes a cap 21 to slide upwards on a casing 1, in which position it is retained by springs. This strains springs 7<3>. 25 which tend to withdraw the detents 7 into the casing. When the load touches the ground the weight is removed from the detents, which spring open and detach the parachute. In a modification, the cap 21 sliding upwards unsovers the upper ends of levers formed integrally with the detents 7; when the load touches the ground the detents are freed and a spring compressed between the upper ends of the levers separates them and releases the load-rope.
Patent GB-277709-A (GB)
Title: Method of and means for distributing washers to the pins of heel molds
IPC: B29D99/00
Filed: 1927-09-20
Abstract: 277,709. Goodyear Tire & Rubber Co., (Assignees of Wetmore, L.). Sept. 2U, 1926, [Convention date]. Feeding articles from hoppers or shoots.-A device for feeding washers to the pins of rubber-heel moulds comprises a series of containers which are moved over the mould so that the pins successively impale the washers and withdraw them from the container, the remaining washers being retained in the containers by magnetic attraction. In the apparatus described three containers 11, 12, 13, Fig. 1 are movably mounted by swivelling arms 23, 24, 28 and control springs 44 in a frame 14 which is traversed over a mould M, Fig. 4 so that the pins P successively impale the washers W and withdraw them from the containers. The lower ends 39 of the containers are divided from the main upper parts by a serrated break and are carried therefrom by spring-controlled pivoted arms 37. The washers are retained in the containers by members 54 with angularly disposed portions overlying the ends and formed with channels 56 increasing in depth until they divide the overlying portions into two spaced lugs 57 at a point about the axis of the containers. The trailing side of the containers is cut away to a depth sufficient to allow the removal of a single washer. In order to prevent accidental discharge of the washers under gravity, the container portion 39 is formed of hardened steel and magnetized, except for a boss 61 on its trailing edge which is formed with a layer 62 of non-magnetic material such as brass so as to avoid the tendency of the magnetic attraction to withdraw the washer from the pin.
Patent GB-502410-A (GB)
Title: Improvements in photographic make-up
IPC: A61Q1/02
Filed: 1937-09-11
Abstract: 502,410. Cosmetics. DEHN, F. B. (Factor & Co., M.) Sept. 11, 1937, No. 24820. Drawings to Specification. [Class 81 (i)] A cosmetic preparation, such as a powder or foundation cream, adapted for use on individuals to be photographed or panchromatic type emulsions comprises white and coloured pigments so blended that the preparation has a high reflection coefficient to light of wavelengths of about 6200 to 6500 A and lower reflection coefficients to light of shorter wavelengths, the reflection coefficient to light within the range 4000 to 4500 A being 45 per cent to 75 per cent of the reflection coefficient to light within the range 6200 to 6500 A. The reflection coefficients of the preparations are ascertained by spectrographio methods. The pigments employed should consist to the extent of 50 per cent or over, of white pigments such as titanium and zinc oxides. The coloured pigments comprise materials such as ivoryblack, blue and red lakes, ochre, and substances used in the art as sienna and umber substitutes. Mineral oils, vegetable oils, and mixtures thereof with or without alcohols, wetting-agents, &c. are used as vehicles.
Patent GB-599968-A (GB)
Title: Improvements in anode regulating devices for electrolytic cells
IPC: C25D9/00
Filed: 1945-09-25
Abstract: 599,968. Electrode supports. SOLVAY & CIE. Sept. 25, 1945, No. 24856. Convention date, Oct. 23, 1944. [Class 41] In an electrolytic cell with horizontal anodes, e.g. a cell having a movable horizontal cathode of mercury, a fluid-tight seal between the adjustable anode supporting rod c and the cover e of the cell comprises a ring b of graphite tightly surrounding the rod c and supported on the cover e with a sealing member d between ring and cover and a metal cap a in which the ring b is fitted and means h for tightening the joint between ring and cover. A stirrup-like frame k for adjustment of rod c may be provided, hooked under cap a and has a screw l which bears axially on the rod c. The electrical contacting surfaces a and b may be coated with a thin layer of highly conducting metal such as copper or silver, electrolytically or otherwise. The rods c of several anodes of a cell may be electrically grouped in pairs or fours, and the caps a cast integrally, current being led to the groups by conductor strips bearing on flat parts of the integral cap units.
Patent GB-494129-A (GB)
Title: Improvements in or relating to magazine for razor blades
IPC: B65D83/10
Filed: 1937-09-13
Abstract: 494,129. Cases for razor blades. MAGAZINE REPEATING RAZOR CO. Sept. 13, 1937, No. 24872. Convention date, Oct. 10, 1936. [Class 18] A case to hold razor blades comprises a channel-shaped member 12, closed at one end by a flange 14 and along the bottom edge by a plate 21 which covers the inturned edges of the side walls. After a pile of blades in a clip 18 has been inserted in the case, a lug 20 is struck from one wall to prevent the clip being withdrawn and, preferably, the case is made of a brittle metal which will break if removal of the clip is attempted. A spring 28 pushes the blades upwards so that the top one can be ejected through a slot 29 by means of a pusher 24, the latter comprising a plate joined through a slot 11 to a finger piece 26. A finger 10 allows the magazine to be aligned with a razor so that a blade can be ejected straight into the razor. Should the flange 14 be broken, a stop 16 prevents the clip from being withdrawn out of this end of the case. Specification 430,063 is referred to.
Patent GB-713856-A (GB)
Title: Apparatus for use in depositing liquids of high or low viscosity on surfaces
IPC: B41F1/40
Filed: 1951-10-24
Abstract: 713,856. Printing. McCORQUODALE COLOUR DISPLAY, Ltd., and SANDERSON, J. C. Oct. 14, 1952 [Oct. 24, 1951], No. 24877/51. Class 100 (2) A platen press of the kind wherein liquid colour or other printing material is supplied from a reservoir or reservoirs via control means and through a port or ports extending through a matrix to a cavity or cavities in the matrix surface arranged to be hermetically engaged with a sheet or other body on the platen, is characterized in that suction means are provided to withdraw air from the cavity or cavities after the matrix has made fluid-tight engagement with the sheet &c. and before the colour &c. is admitted through the ports to the cavities. Correct filling of the cavities is thereby ensured, enabling colour cards or printed electrical circuits to be produced on bases of coated &c. non-porous paper or card, plastics, mica, ceramics &c. As shown the cavities 2 in the face of the metal matrix 1 are each connected by a port 6 to a recess 5 into which is screwed a guide s!eeve 7 for a slidable tube 8 having a closed conical end 9 seating in the port 6 ; pigment or metallized ink is supplied to the recess 5 from an open or closed (e.g. pressurized) reservoir through a flexible hose 11 and radial apertures 10 in the tube 8 ; a rising and falling platen 3 supports the base sheet 4. In Fig. 2 a sliding plug 13 is provided within a bore 12 intersecting the bore 6; in the position shown a bore 14 terminating in a radial aperture 15 connects the cavity 2 to a continuously acting suction pump via a flexible tube 16 ; thereafter the plug 13 is moved, against the action of a spring 18, to a position where a bore 17 connects the two parts of the port 6 so that pigment &c. may be fed to the evacuated cavity 2 by raising the tube 8 manually or mechanically in timed sequence with the movements of the platen 3 and plug 13. In Fig. 5 a c!osed suction box 25, 26 is provided above the matrix 1, connected to a suction pump by a flexible tube 36 ; a suction port 29 (or ports, according to the Provisional Specification) connects each cavity 2 to the suction box via a valve comprising a rod 32 (or a cam- &c. controlled tube with one or more projections to close the port or ports 29, according to the Provisional Specification) coacting with a conical seating 33 in a tube 30, apertured at 31, screwed into the matrix 1 and extending across the suction box; controlling bars or plates 34, 35 connect the upper ends of the rods 32 and tubes 8 ; the guide sleeves 7 are sealed into the suction box by nuts 27 and washers 28. In a further form (Fig. 4, not shown) ports similar to 29 are provided, each leading to an individual manual cock connected by flexible tube to the suction pump. Specification 527,374 is referred to.
Patent GB-1467097-A (GB)
Title: 1,2-disubstituted-benzimidazole derivatives
IPC: C07D401/04
Filed: 1975-06-11
Abstract: 1467097 Benzimidazoles DAIICHI SEIYAKU CO Ltd 11 June 1975 24933/75 Heading C2C Novel therapeutic compounds (I) (including salts thereof) where R is H or alkyl and X is halogen, are made by cyclizing compounds (II), by alkylating compounds (V) or by interacting compounds (III) and (IV); Q signifies CO or ethylene ketal group and R 1  a halogen atom or a reactive ester derivative of a hydroxy group.
Patent GB-297965-A (GB)
Title: Improvements in and relating to adapters for electrical pick-ups
IPC: H01R33/76
Filed: 1927-09-22
Abstract: 297,965. Hough, T. Sept. 22, 1927. Vacuum tubes. - An adapter for inserting in a valve-holder to enable an electric pick up to be connected comprises a set of sockets c<1>, c<4> to receive the valve, each socket being formed in one with the corresponding pin that enters the valve-holder, the filament and grid members being provided with lateral terminals d, e, f. The pick-up is connected between the grid terminal d, and one of the terminals e, f, and one of the latter terminals is connected to earth.
Patent GB-1428829-A (GB)
Title: Containers for gassy liquids
IPC: B65D79/00
Filed: 1973-05-25
Abstract: 1428829 Container with closure TECHNOLOGY ASSOCIATES Inc 25 May 1973 25085/73 Heading B8T A container 12 with a single orifice 68 is incompletely filled with a gassy liquid 14 and has a closure 70 for sealing the orifice 68 and an insert 64 extending through the orifice 68 into the container 12 and occupying all or substantially all of the volume of the container 12 not filled with the liquid 14, the insert 64 being capable of accommodating thermal expansion of the liquid 14. The insert may be of cellular material or have a hollow centre open to atmosphere, Fig. 3 (not shown) or connected to the inside of the container by a resiliently closed channel 36, Fig. 4. The closure may be pushed on, Fig. 3 (not shown) and Fig. 4, screwed on, Fig. 5 (not shown or screwed in, Fig. 6. The insert may be integral with the closure, Fig. 3 (not shown) and Fig. 6.