baber/WOPTO huggingface dataset:
Patent GB-154359-A (GB)
Title: Improvements in and relating to motor road vehicles
IPC: B62D7/02
Filed: 1919-09-04
Abstract: 154,359. Humfrey, L. C. Sept. 4, 1919. Adjusting forecarriages for steering.-A steering column m<1>, mounted in a sleeve carried by the main-frame of the vehicle, forms an anchorage at its lower end for the centre of a cable m<2>, the ends of which are connected to opposite sides of the carriage to the rear of the central pivot.
Patent GB-728571-A (GB)
Title: Means for operating an indicator or other device in response to the movement of a cage or skip in a mine shaft
IPC: B66B1/50
Filed: 1953-08-06
Abstract: 728,571. Locating conductors electrically. STAMICARBON N.V. Aug. 6, 1953 [Aug. 9, 1952], No. 21795/53. Class 37. Apparatus for detecting the presence of e.g. a cage in a mine-shaft comprises two similar coils 2, 3 joined in series opposition and coupling with an A.C. energized coil 1, located with the coil 3 nearest the mine shaft 9, so that when the cage 8 is opposite coil 3 the induced voltages in coils 2, 3 are unequal, and the difference is amplified at 7 to operate tilting apparatus or brake means &c. The coils are preferably wound on a common, hollow magnetic core.
Patent GB-438983-A (GB)
Title: Improvements in safety switch devices for electrically heated apparatus
IPC: H05B1/02
Filed: 1934-07-25
Abstract: 438,983. Thermal switches. SATCHWELL, L., Farnham Road, Slough, Bucking- hamshire. July 25, 1934, No. 21813. [Class 38 (v)] A thermal switch for protecting an electrically heated appliance comprises a capsule 1 enclosing a spring 2 which is held in compression by a fusible plug 3. The capsule 1 is placed in a cap 4 held in position on the appliance by a bushing 5 to which is attached an insulating switch head 6 carrying contact springs 8, 8<1> normally in engagement. Between the capsule 1 and the springs 8, 8<1> is arranged an insulating member 7 so that on overheating of the appliance, the fusible plug 3 melts to release the spring 2 which, acting against the cap 4, pushes down the capsule 1 and forces the member 7 between the springs 8, 8<1> to break the circuit. The springs 8, 8<1> are inclined to one another so that the member 7 acts at a point remote from the point of contact and is not damaged by the arc. The circuit is retained open by the parallel sides of the member 7. In a modification, the capsule is arranged at a distance from the contacts and acts on the member 7 through a rod.
Patent GB-888003-A (GB)
Title: Improvements in and relating to coal burning gas turbines
Inventor: HARDING GORDON THOMAS
IPC: F02C3/26
Filed: 1957-07-11
Abstract: 888,003. Gas-turbine plant. ENGLISH ELECTRIC CO. Ltd. July 7, 1958 [July 11, 1957], No. 22069/57. Class 110 (3). In a open cycle, direct coal fired gas-turbine plant having powdered additives introduced into the mixture of combustion products and excess air after they have left the combustion chamber laden with ashes. the powdered additives and the ashes taken up by them are continuously removed from the mixture before its entry into the gas turbine. Compressed-air is supplied by a pipe 1 and pulverized coal by a pipe 2 to a combustion chamber 3. Additives are introduced by a pipe 4 into a pipe 5 connecting the combustion chamber to a dust extractor 6. The additives with the indesirable material adhering to them are extracted from the extractor 6 by a pipe 7 and the cleaned gases supplied to the turbine 9.
Patent GB-819201-A (GB)
Title: Improvements in or relating to igniters for gas burning appliances
IPC: F23Q7/10
Filed: 1954-07-29
Abstract: 819,201. Gas lighters. YOUNG, H. E. Oct. 12, 1955 [July 29, 1954], No. 22120/54. Class 75(3) In an igniter in which a wire 1, heated when exposed to hydrogen or certain other gases is connected in a switch controlled circuit and is mounted on an electrically insulated carrier 3 laterally of an outlet 4 of a gas duct 5 extending through and fixed to the carrier 3 to form a carrier and gas duct assembly which is mounted in a cover incorporating a perforated, protective cap and connected to a battery holder 6, the cover is constructed in two parts, one part consisting of a perforated cap 7, enclosing the element 1 and the carrier 3. and the other part 6a being detachably connected to the battery holder 6 and to the cap 7. The element 1 is supported between two current conducting prongs 13, the lower end 15a of one prong being- soldered or otherwise permanently fixed to the gas duct 5 and the lower end 12 of the other prong 13 being embedded in the carrier 3 and engaged by a screw 11 which completes an electric circuit through a switch 2 and holds the carrier 3 in the cap 7. The element 1 is located near the lower edge of the inclined end 16 of the gas duct 5 and to one side of the outlet 4 so that the element 1 is not in the direct path of the gas.
Patent GB-1432701-A (GB)
Title: Preparation of siloxaneoxyalkylene polymers
IPC: C08G77/46
Filed: 1973-05-09
Abstract: 1432701 Siloxane - oxyalkylene polymers UNION CARBIDE CORP 9 May 1973 [10 May 1972] 22181/73 Headings C3T and C3R Hydrolysable siloxane-polyoxyalkylene block copolymers comprising at least one siloxane block of the formula (R 2 SiO) x , where R is a monovalent hydrocarbon or substituted hydrocarbon radical and x is at least 2, and at least one polyoxyalkylene block of the formula (CnH 2 nO) y  where n is at least 2 and y is 1 to 1000, are prepared by reacting an aminocontaining siloxane polymer comprising (A) at least one amino siloxy unit of the formula [R<SP>1</SP>R<SP>2</SP>N] a (R) b SiO [4-(a+b)]/2  wherein R<SP>1</SP> and R<SP>2</SP> are hydrogen or a monovalent hydrocarbon or substituted hydrocarbon radical, a=1-3, b= 0-2, (a+b)=1-3, and (B) at least one siloxy unit of the formula R c SiO (4-c)/  2  where c= 0-3, with a polyalkylene hydroxy compound of the formula HO(C n H 2n O) y H or R(OC n H 2n ) y OH, preferably in the presence of an inert organic solvent and an amount of carbon dioxide that is equal to or in excess to the stoichiometric equivalent required to react with all the -NR<SP>1</SP>R<SP>2</SP> groups on the siloxane, with the proviso that when the siloxane starting material contains 3 or more -NR<SP>1</SP>R<SP>2</SP> groups the polyoxyalkylene hydroxy compound can only be R(OC n H 2n ) y OH. In an alternative process a carbamate containing siloxane polymer comprising (A) at least one unit of the formula and (B) at least one siloxy unit of the formula R c SiO (4-c)/2  is reacted with the above polyalkylene hydroxy compounds to produce the block copolymers. In the examples block copolymers having the general formula where x ranges from 16-30 are prepared by reacting dimethylamino-terminated polydimethylsiloxane with polyoxyethylenepolyoxy - 1,2 - propylene glycol, using xylene as solvent the reaction mixture being first sparged with nitrogen and then with carbon dioxide. In another example the above block copolymer is prepared by first sparging the above aminoterminated siloxane in xylene with carbon dioxide to form the corresponding carbamateterminated siloxane and then adding the glycol and sparging the reaction mixture with nitrogen. The block copolymers can be used as surfactant foam stabilizers in the preparation of polyurethane foams. In a particular example the foam is prepared by mechanically frothing a mixture comprising a polyol blend consisting of (i) a graft polymer of acrylonitrile and a glycerol started propylene oxide adduct triol of M.wt. 3000, (ii) a glycerol started propylene oxide adduct triol of M.wt. 700, and (iii) a poly-#-caprolactone diol of M.wt. 1500; tolylene diisocyanate, nickel acetylacetonate, N,N,N<SP>1</SP>,N<SP>1</SP> - tetramethyl - 1,3 - butanediamine and the above block copolymer surfactant.
Patent GB-689553-A (GB)
Title: Improvements relating to the production of castings of palladium and alloys thereof
IPC: C22C5/04
Filed: 1951-09-21
Abstract: A method of casting Pd or an alloy containing at least 85 per cent Pd comprises heating the Pd or alloy, which is substantially free from P and Si, to a temperature not more than 400 DEG F above its melting point whilst protecting it by a non-oxidizing atmosphere, deoxidizing with W and/or Mo and casting it into a refractory mould.  The Pd-alloy may contain any of the precious metals except Os e.g. 95.5 per cent Pd, 4.5 per cent Ru.  The melting may take place in an inert atmosphere, e.g. of Ar or He, with injections of a reducing gas e.g. H2 or coal gas, to prevent oxidation of the W and Mo.  If W alone is used for deoxidising, it should be at least 0.25 per cent by weight of the Pd or alloy, and if Mo alone is used 0.12 per cent.  If both are used, the percentage of Mo plus half the percentage of W is at least 0.12 per cent of the weight of the Pd or alloy.  The Pd or alloy may be pre-treated for the removal of Si by melting under oxidizing conditions, and deoxidising treatment carried out in a crucible having a lining containing not more than 0.5 per cent Si which has been treated for the surface removal of Si.  A suitable crucible comprises a shell of fine clay and sand lined with cement of fused alumina, 5 per cent of a clay binder and 0.5 per cent silica. This was dried and heated to about 2500 DEG F for 2 hours.
Patent GB-354528-A (GB)
Title: Improvements in or relating to twist drill point grinding machines
IPC: B24B3/24
Filed: 1930-07-23
Abstract: 354,528. Grinding. STOCK & CO., SPIRALBOHRERWERKZEUG-UND MASCHINENFABRIK AKT.-GES., R., Marienfelde, Berlin. July 23, 1930, No. 22225. Convention date, Aug. 27,1929. [Class 60.] Twist drills, sharpening ;trueing rotating tools.-A machine for grinding the rear of the cutting-edges or lips of twist drills consists of a grinding- wheel 6 of truncated conical form driven by an electric motor contained in a housing 4, or by other means, which is angularly adjustable about a pin 7 on a slide 3 movable on the frame of the machine by a rack 8 and a quadrant 9 operated by a hand-lever 11. The drill is mounted on a bracket 12 adjustable vertically on the frame 1 by a screw 14 and carrying a plate 16 movable by a wheel 17 in a direction at right-angles to the movement of the slide 3. On the plate 16 is an intermediate rotatably adjustable plate, on which are mounted two gripping devices 18, 19 engaging the drill, and slidable towards and from the drill at an adjustable angle, by means of links 24, 25 pivoted to a double-armed lever 26 carried by a spindle 27. The spindle is rotatable in a housing 28 and carries a quick-pitch screw 29 engaged by a nut 30 normally held up by a spring 32, so as to close the devices 18, 19 on to the drill, but movable downwards, to rotate the spindle 27 to free the drill, by means of a pedal 44. The point of the drill is located by an adjustable abutment 20, and the drill is adjusted so that its edge lies parallel to the movement of the slide 3, the grinding being performed by the edge of the wheel 6, the plane of which lies at an angle to the direction of movement. The shank end of the drill is supported by a centre 23 adjustable along an arm 21. The wheel 6 is trued by a diamond 43 carried by a slide 42 movable on a casing formed on a sleeve 36, angularly adjustable in the end of an arm 33, which may be swung about a pivot 34 on the plate 16 to 'the operative or inoperative position. The slide 42 is movable by means of a spiral rib 40 on the outer flat face of a bead 41 on a shaft 38 rotatable by a hand-wheel 39.
Patent GB-301102-A (GB)
Title: Improvements in or relating to braiding machines
IPC: D04C3/14
Filed: 1927-08-24
Abstract: 301,102. Benson, J. F., and Windram, H. Aug. 24, 1927. Braiding - machines. - Bobbins 9, are mounted to rotate on pins carried by bases 11 which also carry slotted tubes 1 in which the tension weights 3 slide. The thread passes through eyes 16, 17 in the tube and supports the weight, which rises as the thread is used up until a pin 6 thereon lifts a catch 7 out of engagement with ratchet teeth 9a on the top flange of the bobbin. A spring brake 12, 13 prevents the bobbin from turning too rapidly. Specification 283,689 is referred to.
Patent GB-634685-A (GB)
Title: Improvements in sanitary napkins
IPC: A61L15/16
Filed: 1947-08-11
Abstract: 634,685. Catamenial appliances. INTERNATIONAL CELLUCOTTON PRODUCTS CO. Aug. 11, 1947, No. 22257. Convention date, Feb. 8, 1939. [Class 81(ii)] A sanitary napkin comprises an elongated absorbent pad enclosed in a wrapper having extensions beyond the ends of the pad for use as attachment tabs, the wrapper being of soft fibrous material and having disposed over one surface spaced threads 11 and stripes 17 of cementitious material, such as latex, which serve to supply an adequate tensile strength to the wrapper.
Patent GB-973573-A (GB)
Title: Improvements relating to active electrical one-ports
Inventor: SARAGA WOLJA
IPC: H03H11/48
Filed: 1961-06-20
Abstract: 973,573. Two-terminal networks. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 15, 1962 [June 20, 1961], No. 22257/61. Heading H3U. A two terminal impedance comprises a combination of positive and negative impedances, the passive elements consisting of resistance and capacitance only, the negative impedances being realized by means of e.g. negative impedance converters (NIC). Such a network lends itself to miniaturization since it lacks inductors. The negative impedance converters may be of the transistor type. Specifically, the network comprises impedances kZ a , - kZ b , - k/pZ b  and k/pZ a , positive and negative impedances being arranged in series in two branches between terminals AB (Fig. 1), each negative impedance being realized by means of a NIC of ratio - 1 terminated by the appropriate positive impedance (Fig. 2). The arbitrary non-zero constant k may be negative in which case the NIC's are associated with the impedances kZ a  and k/pZ a . It can be proved that the impedance can be realized for any positive and negative values of k and for any real rational function Z AB (P) (where p is the normalized complex frequency variable) using only passive RC networks for Z a  and Z b . The Specification gives a detailed account of a method of determining Z a  and Z b  for any prescribed function Z AB (P). The required impedances are expressed as where q = #p and the subscripts o and e denote the odd and even parts of polynomials in q defined by q a  and q b  are the values of q in the q plane at which qZ AB /k is equal to + 1. These values are found for the required function Z AB  and the polynomials formed. After separation into odd and even parts, the functional forms of Z a  and Z b  may be determined. The factor k may be chosen to obtain any desired advantage, e.g. simplification of calculation, reduction in number of components, &c. As an example, where Z AB  = p = q<SP>2</SP> and k = 1, the network of Fig. 4 is realized (NIC's are not shown). This network may be simplified by adding together - k/pZ b  and k/pZ a  whereby the lower branch contains only a negative resistance. The points CD, Fig. 1, are conjugate with the points AB and may be used as network terminals. Further, C and D may be short-circuited without affecting Z AB , the result being the network of Fig. 6. Thus, it is possible to cancel the parallel capacitances of - kZb and k/pZ a  in Fig. 4 and join B to C and D in common by means of a single negative resistance.
Patent GB-1462618-A (GB)
Title: Reducing the reflectance of surfaces to radiation
IPC: G02B5/18
Filed: 1973-05-10
Abstract: 1462618 Anti-reflectance coating INDUSTRY SECRETARY OF STATE FOR 12 June 1974 [10 May 1973] 22284/73 Heading G2J The reflectance of a surface is reduced by forming thereon a regular array of protuberances having a height not less than one third of the longest wavelength in the band and a spacing less than the length of the shortest wavelength of the band divided by the refractive index of the material from which the protuberances are made. Photoresist exposed to suitable light patterns may be used and if desired etching or ion beam erosion may be used.
Patent GB-1281404-A (GB)
Title: Improvements in or relating to rolling mills
Inventor: ASHTON JOHN CONGREAVE
IPC: B21B13/00
Filed: 1969-05-01
Abstract: 1281404 Rolling mills ASHLOW STEEL & ENG CO Ltd 27 July 1970 [1 May 1969] 22344/69 Heading B3M A rolling mill incorporates a pair of rolls 10 mounted on respective shafts 8, the shafts carrying gears 6 which mesh with further gears 7, Fig. 4. By driving one of the gears 7, the other gear 7 is driven and the two rolls are rotated. The gears 6 and rolls are carried in arms 4 which can pivot about the axes of gears 7, thereby allowing the roll gap to be adjusted while the gears remain in mesh. To adjust the roll gap, the arms 4 are pivoted by a shaft 24 carrying threaded sections of opposite hand. The sections co-operate with nuts on the arms 4 to pivot the arms about the axes of gears 7. A ram acts between the arms 4 to take up backlash during adjustment. Two such mills may be situated side by side, with one a mirror image of the other. A common motor drives the mills, and a common shaft 30 can be used to adjust the shafts 24 simultaneously. Exit and inlet guides (Fig. 1, not shown), and also cooling water sprays are provided for the rolls.
Patent GB-423157-A (GB)
Title: Improvements in and relating to luffing davits
IPC: B63B23/04
Filed: 1934-07-31
Abstract: 423,157. Davits. SCHAT, A. P., 66, Hendrik de Keijserstraat, Utrecht, Holland. July 31, 1934, No. 22360. [Class 115] A davit arm is manufactured with a metal trough-shaped body with a metal plate 8 welded thereon so as to leave portions of the side walls of the trough projecting beyond the web. The trough as shown is composed of three metal strips welded on their abutting edges, but it may also be composed of a single metal strip bent to the required shape. The channel thus formed may be employed to guide the skates with which life-boats are sometimes equipped. Specification 395,391 is referred to.
Patent GB-708225-A (GB)
Title: Improvements in or relating to circuits for synchronising an oscillator to a controloscillation
IPC: H04N5/12
Filed: 1952-09-05
Abstract: 708,225. Automatic frequency control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 5, 1952 [Sept. 10, 1951], No. 22403/52. Class 38(4) In an oscillation synchronizing circuit, such as employed in a television receiver for synchronizing a scanning generator to the sync pulses with the aid of a phase discriminator, an adjustable direct voltage is set up in series with the discriminator output for the purpose of adjusting the phase relation between the sync pulses and the synchronized generator. This enables the position of the picture on a television screen to be adjusted. The sync pulses 2 are applied in push-pull through a transformer 3 and condensers 4, 7 to two oppositely-poled rectifiers 5, 6; and saw-tooth oscillations developed from an oscillator 1 across the condenser 16 are applied cophasally to the centre point of resistors 8, 9 shunted across the secondary of the transformer 3. The input electrodes of the rectifier 5, 6 are connected by resistors 10, 11 and their output electrodes are both connected to one side of an output condenser 12, the other side of which is earthed. The voltage appearing across the condenspr 12 is applied to control the frequency of the oscillator 1. The condenser 12 is in parallel with a series connexion of a resistor 13 and condenser 14, the combination providing a long time-constant and removing feed-back round the loop at the oscillation frequency. The invention consists in the provision of an adjustable direct voltage supply 17 between the earth lead and the junction of the resistors 10, 11 so that this voltage is added to the output voltage of the discriminator and is applied via the smoothing means to control phase of the oscillator.
Patent GB-259009-A (GB)
Title: Improvements in expanding bracelets and like articles of jewellery
IPC: A44C5/08
Filed: 1925-09-08
Abstract: 259,009. Downes, A. Sept. 8, 1925. Bracelets &c.-A number of plates a, Figs. 3, 4, forming the main links of an expanding bracelet, watch wristlet or like article of jewellery each carry at or near opposite edges tubular members c through each of which is threaded a continuous elastic connecting element f. Auxiliary link members d engage, studs b on the plates a and prevent overstrain of the elements c, corresponding pairs of members d on the links a being connected by transverse members e. Fig. 6 shows, partly in front view and partly in rear view, a modified construction in which the auxiliary links d project forward between adjacent main links a.
Patent GB-1071683-A (GB)
Title: Method of and device for detecting faults in rolled metallic products
IPC: G01N22/02
Filed: 1964-06-01
Abstract: 1,071,683. Detecting flaws. LORRAINEESCAUT and LABORATOIRES D'ELECTRONIQUE ET D'AUTOMATIQUE DU NORD "LEANORD". June 1, 1964 [Oct. 21, 1963], No. 22515/64. Heading G1N. Flaws in rolled metallic products are detected by applying a high frequency field perpendicular to the thickness and measuring magnetic leakage at the other side of the product. As shown, differentially connected coils BE 1 , BE 2  surrounding a moving tube T produce a field in the radial plane P. Differentially connected pick-up coils BR 1 , BR 2  receive pulses when a flaw passes and operate a warning device through an amplifier and relay. The circuit may include a guard circuit to prevent actuation at the end of a tube. The signals may be stored.
Patent GB-329568-A (GB)
Title: Improvements relating to ladder carriages or supports
IPC: E06C1/397
Filed: 1929-07-23
Abstract: 329,568. Parry, J. M. July 23, 1929. Hand-trucks.-A ladder-truck is formed of a framework 1 having a wheel 3 at one end and handles 4 at the other, with adjustable pivoted struts 13 at each end. A hinged framework 27 with a hinged extension 32 is stayed by stop 24 to the main frame to support the ladder, the foot of which is held in either of the recesses 19, 20 provided in the main frame, stops 21 and 23 being provided to prevent slip. Footboards 30 and 31 are also provided on the main frame.
Patent GB-598424-A (GB)
Title: A new or improved machine for mixing manure
IPC: A01C3/00
Filed: 1945-09-03
Abstract: 598,424. Mixing-machines. MAJOR, P. C. Sept. 3, 1945, No. 22639. [Class 86] A manure-mixing machine comprises a framework supporting a reciprocating frame carrying rake bars mounted transversely of the direction of reciprocation and having projecting tines, and a driving mechanism for reciprocating the rake frame and for rotating the rake bars continuously in the same direction. Rake bars 40, Fig. 2, carrying tines 41 are mounted in a frame 36 reciprocated by connection to straps 35 surrounding a pair of eccentrics 33, Fig. 3, on a rotating shaft 31, driven through belts and pulleys from an engine 22. Rods 37 support the opposite end of the frame 36 in trunnions 38 on a cross-shaft 39. Each bar 40 is connected bv a detachable coupling 42 to a gear wheel 43. A pinion 32 on the shaft 31 drives the adjacent end pinion 43 through an idler pinion 45. The latter is maintained in mesh with the pinions 32, 43 as the frame 36 reciprocates and is mounted on a pin 47 connecting links 48, 49 pivoted to the shafts carrying the pinions 32, 43. The drive is transmitted to the other pinions 43 through idler gear wheels 46, and the tines 40 are of such length that the arcs described by the tips of adjacent sets are approximately tangential. The frame 36 is formed in two parts 54, 55, and the part 55 which supports the rake bars 40 is removable from the part 54 which supports the gear-wheels 43, 46, by undoing securing nuts 56 and releasing the couplings 42. The part 55 may be interchangeable with a similar unit having tines of a different spacing. Specification 539,760 is referred to.