baber/WOPTO huggingface dataset:
Patent GB-1459001-A (GB)
Title: Frames for windows doors and the like
IPC: E06B3/20
Filed: 1974-01-17
Abstract: 1459001 Frame corner joints J KELLER 17 Jan 1974 [17 Jan 1973] 02290/74 Heading F2M [Also in Division E1] A door or window frame is made of a foamed plastics enveloping a perforated, metallic, tubular core 3, the plastics penetrating through the perforations. Frame corners are formed by wedging the limbs of L-shaped connectors 4 into hollowed out, mitre-cut ends of adjacent frame sections. The connectors may have ribs 8 which penetrate the plastics. Tapered pins or screws may be inserted into bores 6 extending transversely through the frame and connectors. The connectors may be glued into place. The frame is secured in a wall aperture by means of serrated edges 12, Fig. 3, engaging complementary serrations on the head 10 and sill 13. Metal facing strips 9 are provided.
Patent GB-497513-A (GB)
Title: Improvements in or relating to flotation processes
IPC: B03D1/02
Filed: 1938-01-26
Abstract: In concentrating ores by flotation, the minerals are activated by adding to the pulp an alkali and a soluble soap, a fatty acid, or a saponifiable body such as a glyceride oil or fat.  The pulp is then neutralized and the soluble soaps destroyed by adding a water-hardening agent such as hard water itself, magnesium, calcium, aluminium, or ferrous salts, or acids which will react with the gangue to produce such salts.  A frothing agent suitable for use in hard water, e.g. pine oil or creosote, is then added and the minerals separated.  After addition of the activating agents the pulp may be agitated to form a froth, the subsequent steps being carried out either on the frothed pulp or on the froth alone after removal from the pulp, the froth being destroyed in either case by the addition of the hardening agent.  The activating agents may be added in solution in a water-miscible solvent, e.g. stearic or palmitic acid may be dissolved in ethyl or amyl alcohol, and the pulp and the solution of activating agent may be heated before or after admixture.  Oxidized and sulphide minerals and free metals may be floated by the process, the flotation of oxidized copper ore, oxidized lead ore, and cassiterite being described.
Patent GB-812839-A (GB)
Title: Improvements in and relating to printing machines
IPC: B41F1/40
Filed: 1957-01-24
Abstract: 812,839. Inking-apparatus. BURTON ENGINEERING CO. (BRIDLINGTON) Ltd., and BURTON, G. H. Jan. 21, 1958 [Jan. 24, 1957], No. 2538/57. Class 100(2) In a printing-machine of the flat-bed type in which the forme is mounted horizontally on a flat face on a non-rotatable cylinder and a series of inking-rollers are provided to travel round the periphery of the cylinder and over the surface of the forme between each impression, the cylinder is provided with at least one chain member mounted around its periphery to co-operate with sprockets carried by the inking-rollers. The inking-rollers 8 are carried on bridge pieces 7 and are moved round the cylinder 1 by spiders 4 comprising arms 4a, and bars 6, being urged inwardly by springs 12 and rotating by frictional contact between runners 16 and tracks 17, and positively by engagement of sprockets 11 at one or both ends of each roller with chains 9 removably fastened to the cylinder by straps 10. Two portions 1a of the cylinder surface are axially reciprocable to spread the ink by face cams 13 on the spiders engaging rollers 15.
Patent GB-1072334-A (GB)
Title: Polyimides
IPC: C08G73/10
Filed: 1965-01-20
Abstract: A shaped polyimide is prepared by mixing an aromatic dianhydride, an organic diamine, a dehydrating agent and a tertiary amine for up to one sec., shaping the mixture and simultaneously or subsequently condensing it.  The aromatic dianhydride may be such that the two carbonyl groups in each anhydride group are attached to adjacent carbon atoms of a benzene ring.  Compounds specified include pyromellitic anhydride.  The organic diamine may be an aromatic diamine.  Compounds specified include bis(4-aminophenyl)ether.  The dehydrating agent may be carboxylic acid anhydride, an N,N1-dialkyl carbodiimide, a lower fatty acid halide, a halogenated lower fatty acid halide, a halogenated lower fatty acid anhydride, an aryl phosphonic dihalide or a thionyl halide.  Compounds specified include acetic anhydride and ketene.  Tertiary amides specified include pyridine and isoquinoline. Up to 5% excess of either diamine or dianhydride may be used in the presence of 0.3-1 mole of tertiary amine per mole of dehydrating agent.  Reaction may be effected by bringing a mixture of the dianhydride and the dehydrating agent into contact with a mixture of the diamine and the tertiary amine by jet or spray mixing.  Either or both reagents may be in an inert solvent, a 1-25% solids solution being used.  Solvents specified include dimethyl acetamide.  The mixing may be accompanied by heating to 27-150 DEG  C.  The product on mixing is said to be a polyimide containing some isoimide groups.  This may be deposited on a substrate, e.g. a woven fabric or injected into a non-solvent to precipitate a powder and then fully condensed by heating to 300-600 DEG  C.ALSO:Polyimide coatings are produced by mixing an aromatic dianhydride of formula:  <FORM:1072334/B1-B2/1> where R is aromatic, an organic diamine, an organic dehydrating agent and a tertiary amine, the mixing being continued for up to one second and being such that a homogeneous mixture is obtained, simultaneously or immediately afterwards shaping the mixture and simultaneously or subsequently causing the polyimide to form.  The reactants may be dissolved in an inert solvent, many examples of reactants and solvents being given. The mixing may be a 27-150 DEG C. and he polyimide formation at 300-600 DEG C.  The substrate may be a woven or non-woven fabric, aluminium or glass.  In Examples the final reaction mixture is formed from intermediate mixtures of (a) pyromellitic anhydride, acetic anhydride and dimethyl acetamide and (b) bis (4-amino-phenyl) ether, pyridine and dimethyl acetamide.  In Examples (1) and (2) the intermediate mixtures are brought together in a single spraying head and sprayed on to aluminium plate.  In Example (2) the spraying head and the atomising air stream are heated.  In Example (3) the two intermediate mixtures are impelled against each other as thin streams in a heated T shaped jet-mixer and the final mixture applied to glass and aluminium plate.
Patent GB-1298531-A (GB)
Title: Cobalt ii halide ketazine and aldazine complexes
Inventor: STAPFER CHRISTIAN HENRI
IPC: C09D167/06
Filed: 1971-01-19
Abstract: 1298531 Cobalt-containing accelerators for polyester resin CINCINNATI MILACRON CHEMICALS Inc 19 Jan 1971 [31 March 1970] 2573/71 Heading C3R and C3P [Also in Division C2]  Cobalt (II) halide azine complexes of the general formula in which R 1  and R 4  are hydrogen, alkyl, aryl, haloaryl, haloalkyl, aralkyl, furyl or tetrahydrofuryl; R 2  and R 5  are alkyl, aryl, haloaryl, haloalkyl, aralkyl, furyl or tetrahydrofuryl, or R 1 R 2 C and R 4 R 5 C cycloalkylidene radicals; R 3  is a tetravalent saturated aliphatic or aromatic hydrocarbon radical; n is 0 or 1 as X is halogen, are used as curing agents or accelerators for drying alkyl resins or oxidizable olefinic polymers. Examples are given of the use of the azine complexes in the polymerization of (a) styrene modified polyester resin (Exs. 7, 8, 9 and 12) and (b) an alkyd test paint formulation consisting of an alkyd resin containing 63% soya oil and 23% phthalic anhydride and optionally titanium dioxide (Exs. 10 and 11).
Patent GB-637697-A (GB)
Title: Improvements in and relating to fasteners
IPC: F16B5/10
Filed: 1948-01-28
Abstract: 637,697. Stud-and-socket fastenings. UNITEDCARR FASTENER CORPORATION. Jan. 28, 1948, No. 2578. Convention date, Jan. 28, 1947. [Class 44] In a stud member for a stud and socket fastening, e.g. for aircraft cowling, of the kind having a headed part 10 with a screwed shank 14 to engage in a threaded bore on a fastener engaging part 11 there is provided' locking means on the headed part engaging the other part to secure the parts against rotation in a selected adjusted position. In the form shown, the means comprise a two-armed spring member 30 mounted in a bore on the shank 14 and having a head 31 engaged in a slot 20 formed in the stud head 15a. Cranked ends 33 on the arms 32 are engaged in longitudinal slots 24 in the walls of the bore in the part 11. The arms are released by insertion of a tool to lift the head 31 into the position shown in dotted lines and returned to the locking position by the use of a tool in the slot 20 to turn the stud. Specification 557,676 is referred to.
Patent GB-632436-A (GB)
Title: Improvements in or relating to alternating-current circuits incorporating a capacitor
IPC: H01G4/40
Filed: 1947-01-28
Abstract: 632,436. Impedance networks. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Jan. 28, 1947, No. 2626. Convention date, April 20, 1943. [Class 40 (viii)] [Also in Group XL (c)] A network includes a capacity which is provided with means to keep its reactance substantially constant over a frequency range, comprising a dielectric which may be a ceramic including titanium dioxide or a titanate, and which has a dielectric constant that varies with change of frequency through the range. The network may be used in an amplifier to produce a uniform response over a frequency range or in a filter to remove ripples from a power supply. Finally in a receiver using a carrier, both frequency and amplitude modulated, the amplitude section 2 is provided with condensers 89, 96, and 99, as above, to render this part insensitive to the frequency modulation effects.
Patent GB-767501-A (GB)
Title: Improvements in or relating to temperature-responsive means
IPC: H01H37/76
Filed: 1953-01-29
Abstract: 767,501. Thermal switches. BEST, F. L., and BEST PRODUCTS, Ltd. April 23, 1954 [Jan. 29, 1953], No. 2637/53. Class 38(5) A thermal switch, e.g. for controlling an immersion heater 10 in a kettle, has a shaft 14 held against rotation in a casing 12 by a fusible alloy in the closed end 13 of the casing until the alloy softens on temperature rise to allow an operating spring 28 to swing a switch-operating arm 23, e.g. from stop 37 to stop 38, Fig. 2, to move a contact spring 34 to open position by means of a disc abutment 36 on the arm. A few turns 29 of the operating spring 28, near its anchored end 30, are located around a screw 20 secured in an extension 19 of the shaft 14 and are compressed against the end of the extension to urge the shaft into the casing 12 so that the space containing the alloy and head 16 of the shaft is sealed by the abutting of shoulders formed on the shaft and casing respectively. The arm 23, loosely pivoted on the screw 20 (which acts as a bearing for the shaft and its extension 19 in a bracket 21) is connected to the shaft by a one-way clutch, e.g. a helical spring 24 which normally binds on a reduced portion of the extension 19 but is released when the arm is reset, by being pushed by hand against the action of the spring 28, from stop 38 to stop 37, where the arm is held by the clutch action of the spring 24 on the shaft. The arm 23 may be constituted by the radially-extending end 26 of the clutch spring 24 instead of being attached to it as shown. The Provisional Specification describes also a switch having contacts on leaf springs which are forced apart by an operating member passing between them and having a shaft held by solder in a non-circular part of a casing bore.
Patent GB-965250-A (GB)
Title: Improvements in or relating to centrifugal clutches
IPC: F16D43/12
Filed: 1961-01-23
Abstract: 965,250. Friction clutches. MANUFACTURE DE MACHINES DE HAUT-RHIN S.A. Jan. 23, 1961 [Jan. 21, 1960], No. 2688/61. Heading F2C. In a centrifugal disc clutch the discs 8, 14 are mounted between a rear abutment plate 15 and a tapered pressure plate 9, wedge shaped centrifugal masses 19 being mounted by ball bearings 25 between the plate 9 and a front conical wall portion 10. The rear plate 15 is integral with a grooved collar 17 engaged by the end of a manual or power operated control lever 18 by which clutch engagement can be regulated independently of the masses 19.
Patent GB-1474191-A (GB)
Title: Measurement of surface roughness
IPC: G01B15/00
Filed: 1974-01-21
Abstract: 1474191 Measuring surface roughness photoelectrically NATIONAL RESEARCH DEVELOPMENT CORP 21 Jan 1975 [21 Jan 1974] 02765/74 Heading G1A Apparatus for measuring surface roughness comprises: a source for directing a beam of electromagnetic radiation on to a small area of the surface; detector means for measuring radiation reflected from the surface at one or more angles; means for producing relative motion between the beam and the surface; and means for processing the measured radiation to determine the surface characteristic, by producing signals representing the average intensity and the average of the square of the intensity. A surface 2, Fig. 3 suspected of having irregularities inclined at angles # to the mean plane, scatters light from a perpendicular beam of width W o  e.g. a few microns, towards a detector 5, e.g. photodiode or PM tube, viewing at an angle 2# to the beam. As the surface 2 moves in its own plane, and in a direction lying in the plane common to the beam and the detector viewing axis, a fluctuating radiation intensity is measured. Processing means (not shown) computes a ratio [(I<SP>2</SP>)mean/(Imean)<SP>2</SP> ] as a measure of the number and lengths of the irregularities in the direction of motion. The source may alternatively be an x-ray source, a mercury lamp or a micro-wave source. The  signal processor may be of the kind described in British Specification 1,290,336. In a second embodiment Fig. 1 (not shown) two detectors (5, 6) having viewing axes respectively at a fixed angle # 1  and a variable angle # 2 . Alternatively one detector may view at the fixed and variable angle in turn. The detector may rotate, or a rotating mirror may be arranged between the surface and the detector. Surface roughness at any angle # 2  is then determined from a spatial intensity correlation function In a modification of the second embodiment (not shown) a common detector may receive scattered light from a beam split into two beams to irradiate the surface at different angles.
Patent GB-231976-A (GB)
Title: Improvements in biscuit cutting or the like machines
IPC: A21C11/10
Filed: 1924-02-04
Abstract: 231,976. Vicars, E. L. Feb. 4, 1924. Sheet-cutting machines.-In biscuit &c. cutting- machines of the type having adjustable stops to limit the descent of the ejectors, stop pins are carried by cross plates provided at the extremities of longitudinal bars carrying the ejector plate and are connected to the cutter crosshead by adjustable spring means. As shown, the ejector plate 8 is adjustably suspended by rods 9, passing through the cutter crosshead 1, from cross plates 11 carried by longitudinal bars 14 which are also connected at the ends by cross plates 17 carrying depending studs 19 also passing through the crosshead and furnished at their lower ends with adjustable nuts surmounted by springs 23 bear ing against the underside of the crosshead. The studs 19 act as stops for the ejector plate and are adapted to engage adjustable wedges 24 supported by studs 26 secured to the machine frame.
Patent GB-1436092-A (GB)
Title: Valve installed between a gas generator and a scrubber for purifying flue gas before use as inert gas in liquid cargo tanks
IPC: F01N3/04
Filed: 1974-01-21
Abstract: 1436092 Valves MISUZU MACHINERIES & ENG Ltd 21 Jan 1974 [24 Jan 1973] 02817/74 Heading F2V [Also in Division F4] A flue gas valve installed in a pipe between a gas generator and a scrubber comprises main and auxiliary valve discs 3, 5 mounted on a spindle 2 rotatably mounted in the pipe 1, the main valve disc 3 serving to close the pipe by engaging valve seat 1<SP>1</SP>, the auxiliary valve disc 5 forming a gap S<SP>1</SP> with the pipe 1, and a sealing air pocket S being formed between the discs 3, 5. Disc 5 faces towards the gas generator and the pressure in air pocket S is made greater than the flue gas pressure so that flue gas cannot get into space S. Thus any leakage past disc 3 is only of fresh air with no corrosive properties. The space S is provided with pressured air via pipe 6 and port 1a from the boiler draft fan.
Patent GB-1111414-A (GB)
Title: Improvements relating to weighing apparatus
Inventor: MACKENZIE BENJAMIN
IPC: B64G1/22
Filed: 1965-01-22
Abstract: 1,111,414. Weighing apparatus. DRIVER SOUTHALL Ltd. Jan. 19, 1966 [Jan. 22, 1965], No. 2840/65. Heading G1W. In a weighing arrangement comprising a balance beam 5 on which is mounted a weigh pan 6 having a pivotally movable but normally closed discharge door 9, when sufficient material to balance the beam 5 has been fed from a charging chute 7 to the weigh pan 6 and the feed is stopped, the discharge door 9 is opened and simultaneously coils 15 are energized to magnetize armatures (17) Fig. 2 (not shown) so that a magnetizable portion 16 on the door 9 is attracted by and abruptly raps the magnetized armatures 17 whereby the door is jolted to ensure that all material in the weigh pan 6 is discharged into a discharge chute 8. Inter-engageable detents 11, 12 mounted on opposite sides of the door 9 and weigh pan 6 respectively retain the door in its closed position when the weigh pan 6 is being charged with material and are released for discharge purposes by a mechanically or electrically operated device 13. The door 9 is biased to the closed position by springs 14 mounted on each side of the weigh pan 6 and during discharge allow the door to be urged open by the weighed material by an amount which will not ensure engagement of the magnetizable portion 16 with the armatures 17 unless the armatures are magnetized. The coils 15 are adjustably mounted on a bracket 31 and are connected in an electrical circuit to be energized through a capacitance when the door 9 is opened.
Patent GB-983438-A (GB)
Title: Improvements in or relating to artificial milk powder for calves
IPC: A23K10/28
Filed: 1963-01-23
Abstract: A component for artificial milk powders based on skimmed milk and intended for calves comprises soluble starch in which is incorporated a water-soluble magnesium compound, e.g. magnesium chloride.  The artificial milk powder may also contain soluble starch into which a water-soluble calcium compound, e.g. calcium chloride, has been incorporated.  According to the example, 50 g. of magnesium chloride is added to 1 kg. of starch in the form of a 35-45% aqueous supension, and the mixture converted by passage through drying rollers to a soluble starch powder, and a calcium-chloride-soluble starch component is prepared similarly.
Patent GB-104370-A (GB)
Title: Improved Means of Control for Electro-mechanical Transmissions for Motor Vehicles.
Inventor: STEVENS WILLIAM ARTHUR
IPC: H02P9/06
Filed: 1916-02-28
Abstract: 104,370. Stevens, W. A. Feb. 28, 1916. Electric governors.- In an electro-mechanical power system for motor. vehicles, in which an internal-combustion engine is coupled to a dynamo, and in which overcharging is prevented by closing a throttle-valve n in the induction pipe by means of a polarized armature p acted on by an electromagnet the coils t of which carry the charging-current, the closing action of the polarized armature on the throttlevalve is increased at full charge relatively to the action of the spring &c. tending to hold the. valve open, by an electromagnetic device sensitive to the battery voltage. The armature comprises a coil o placed across the battery. The coils t, o, during charging constantly tend to close the valve, which is held open by an adjustable weight or spring, or by an electro-magnet 2 acting on an armature 1 fast on the spindle r carrying the main armature p. The coil 3 of the electromagnet 2 is placed across the battery, and a further shunt to the battery opens a switch 6, 7 when the battery is fully charged. A resistance 5 is then included in the circuit, which weakens the coil 3 and allows the armature o to close the valve. The resistance 5 may be omitted, the switch 6, 7 simply opening the circuit of the coil 3 when the battery is fully charged. An adjustable resistance 4 may be included in the circuit of the coil 3. Instead of varying the action of the coil 3 when the battery is fully charged, the effect of either of the coils o, t may be varied by cutting out resistances normally in circuit, by opening normal shunt circuits, or by using an additional coil to assist the coil t. In a modification, a rectilinearlymoving armature carrying a coil o and entering a hollow solenoid, may replace the pivoted armature p.
Patent GB-176216-A (GB)
Title: Improvements relating to gas and like fires, radiators, toasters, grillers and similar heat-radiating apparatus
IPC: A47J37/06
Filed: 1921-01-24
Abstract: 176,216. Roxburgh, A. B. Jan. 24, 1921. Gas fires.-A heat-radiating apparatus comprises rods, tubes, strips, or filaments or vitreous silica or like refractory material supported in a cage-like manner so that the flames from gas. burners impinge on their surfaces. The side plates a are tied together bv the rod h and the burner c, and support a number of tubes f of vitreous silica, which are unenclosed and loosely held in bosses g on the plates a. The tubes f are airanged in two rows spaced equidistantly on each side of the centre line of the nipples d of the burner c. A casing e covers the burner. and a heat-reflecting surface may be provided behind the tubes f.
Patent GB-293063-A (GB)
Title: Improvements in or relating to the disposition of engines on aircraft
IPC: B64C13/00
Filed: 1927-02-02
Abstract: 293,063. Dawson, F. G. T. Feb. 2, 1927. Drawings to Specification. Propelling.-Those engines of a multi-engined aircraft that are not centrally arranged and which rotate all in the same direction are set so that their propeller axes converge rearwardly and asymmetrically to a point behind the rear fin surfaces. The propeller axes converge towards that side to which the lower blades of the propellers are moving when the fins are situated in the upper part of the slip streams from the propellers, and to the opposite side when the fins are in the lower halves of the slip streams, Should the engines be arranged above and below the centre line the point of convergence of their propeller axes above or below the centre line is determined by the position of the tail plane with respect to the slip streams.
Patent GB-647769-A (GB)
Title: Sweep circuit arrangements for cathode ray tubes
IPC: G01S1/02
Filed: 1947-01-31
Abstract: 647,769. Radio direction - finding. STANDARD TELEPHONES & CABLES, Ltd. Jan. 31, 1947, No. 3031. Convention date, April 9, 1945. [Class 40 (vii)] A sweep circuit arrangement for a cathode-ray tube producing a very low-frequency circular trace comprises a high-frequency oscillator 1 coupled to a pair of amplifiers 3, 4. The amplifier outputs are varied sinusoidally and 90 degrees out of phase at the desired very low frequency by condensers 5, 6 rotated by motor 9, and are coupled through transformers 7, 8 to rectifiers 10, 11 which rectify the A.C. energy supplied thereto whilst filters 12, 13 extract the very low frequency component for application to the tube deflection plates. The arrangement is suitable for use in radio direction-finding equipment of the type in which the directional information is derived from the phase of the wave obtained at the output of a rotating goniometer. The output of the goniometer 2 is applied to modulate the amplifiers 3, 4 and results in a radial deflection of the trace. Motor 9 is synchronized with the goniometer. Oscillator 1 is designed to operate at a frequency higher than that of the wave from the goniometer.