baber/WOPTO huggingface dataset:
Patent GB-1067995-A (GB)
Title: Filled transparent synthetic plastic compositions
IPC: C08K3/00
Filed: 1964-08-04
Abstract: A casting composition consists of a transparent thermosetting resin (e.g. an unsaturated polyester) having homogeneously embedded therein a finely divided transparent inorganic filler of substantially the same refractive index as the resin so that the filler is substantially invisible, the filler being of a gradation of particle sizes up to the maximum size which will pass through a 100 U.S. mesh sieve, and also having visibly embedded therein an opaque filler, e.g. finely divided calcium carbonate. A striated plastic body may be made by mixing a first quantity of the resin with a minor amount of a curing catalyst (e.g. methyl ethyl ketone peroxide; acetyl, lauryl, stearyl or benzyl peroxide; t-butyl perbenzoate; or t-butyl hydroperoxide) and the transparent filler, mixing a second quantity of the resin with the catalyst and an opaque inorganic filler, striating the opaquely filled mixture in the transparently filled mixture, and curing the striated body. The opaque mixture may be coloured, and different striations of differing colours may be added separately. The resin may be a polyester resin formed from ethylene, propylene, butylene, diethylene, triethylene, polyethylene or vinylethylene glycol and maleic or citraconic acid or anhydride, fumaric acid, or itaconic acid.  Varying proportions of saturated acids such as phthalic acid and anhydride, tetrachlorophthalic anhydride, succinic, adipic, azelaic and sebacic acids may also be used, and the acid-component may also be used in the form of an ester or acid halide.  Part of the hydroxyl component may be glycerol and part of the said component may be citric acid. Monohydric alcohols and/or monocarboxylic acids, including allyl and crotyl alcohols and acrylic and crotonic acids, may be used as modifiers. Oil-modified unsaturated polyesters may be used as the resin. Copolymerizable monomers are styrene, dichlorostyrene, indene, coumarone-indene, vinyl ketones and ethers, allyl maleate and phthalate, ethyl acrylate and crotonate, methyl methacrylate, acrylonitrile, and acrolein.  The transparent filler may be silica, glass, Norweigian quartz or onyx flour, or glass frit. The mould may be coated with a thin layer of polyester resin to provide a smooth transparent coating on the product.  In examples, the polyester may be formed from (1) maleic anhydride and dipropylene glycol or from (2), (3) maleic and phthalic anhydrides and propylene glycol, and the comonomer may be styrene containing t-butyl catechol.
Patent GB-769992-A (GB)
Title: Improvements in or relating to load lifter attachments for tractors
Inventor: CHAMBERS JOHN MALET
IPC: A01C3/04
Filed: 1950-03-09
Abstract: 769,992. Load-handling machines. MASSEY-HARRIS-FERGUSON (SALES), Ltd. March 9, 1951 [March 9, 1950], No. 30622/54. Divided out of 769,991. Class 78 (3). A load-lifting attachment for a tractor comprises a longitudinal boom structure having load-engaging means at the front, means at the rear for detachably connecting it pivotally to the tractor, intermediate means for pivotally connecting it to lifting rams pivoted on the tractor and attachment means for a stand for supporting the boom when detached from the tractor, the stand being set in supporting position after the rear of the boom is detached from the tractor with the load-engaging means on the ground and the boom being raised about the front end by the rams and thereafter allowed to rest on the stand by retraction of the rams. The boom structure comprises two spaced beams 7 which are connected at their rear ends by pivots 8 to pairs of apertured lugs 19 provided at the ends of a transverse member 16, Fig. 6. This member is of inverted U-shape and its side members 21 terminate in apertured sleeves 23 which are detachably connected by pins to sleeves welded on shallow bracket plates 25. These plates are bolted to flats 26 on top of the rear axle casing 27 of the tractor. A U-strip 28 is welded to the cross beam 16 and has pins 29 for detachable connection to an apertured plate 29A secured on top of the tractor casing. The support 12 for the rams 11 comprises a beam 30A, Fig. 11, having end pivots 30B for the rams and two upwardly projecting connector plates 30, each having two pins 31, 31A, Fig. 12, of unequal length. Complementary hanger plates 32 permanently attached to the tractor body casing have holes for receiving the pins 31, 31A. Engagement is effected by lifting and then moving axially the beam first to engage axially the longer pins 31 and then the shorter ones 31A. Each pin 31 is secured by a cotter pin 31B. The stand comprises divergent side legs 66, Fig. 9, which are connected by rungs 67 and have obliquely mounted feet 68. The legs are apertured at the top for detachable pivotal pin connection to the beams 7 and have stop flanges 68A. When the loader is to be detached, the tines 41 are first engaged under a counterweight and then the pins 8 are removed. The booms are then raised slightly by the rams and the stand is attached. The booms are then lowered by the rams to rest on the stand. The rams are then disconnected at their lower ends, swung up, extended and attached by clips to the booms. The tractor is then driven backwards out from the boom assembly. Specifications 470,069, [Group XXXI], and 665,827, [Group XXXII], are referred to.
Patent GB-211197-A (GB)
Title: Improvements in inter-locked safety devices for preventing the opening movement of the enclosing parts of electric switch gear
IPC: H01H31/06
Filed: 1922-11-09
Abstract: 211,197. Hirst, J. A., and Brook, P. S. Nov. 9, 1922. Addition to 121,999. Switch boards; switch mechanism interlocking w i t h lids.-Relates to a modification of the interlocking means described i.n the parent Specification, whereby a single interlock device in the form of a gate-like member having locking parts prevents the removal of covers &c. removable in different directions, until the gear is isolated. The cover c' of the casing C is lifted off upwardly, that e<1> of the casing E horizontally, and the oil container D is lowered vertically. The locking gate F is keyed to a pivoted pin f<2> and its upper end carries aT-piece f<3> fitting over jaws c<2> to prevent lifting of the cover c'. At its lower end and intermediately it carries pieces f<4>, f<5> respectively fitting over locking nuts of the cover e<1> and container D to prevent their being moved. When the casing D is lowered, a tail f<6> on the locking part f<5> engages it and prevents the gate F from being moved to its locking position. Alsokeyed to the pin f<2> and moving with the gate F is a locking piece H co-operating with a cam J on a shaft K, which either actuates or trips the isolating switch. A slot j<1> on the cam J allows or prevents movement of the piece H, and tlierefore of the gate F, according as the shaft K is in the position wherein the isolating switch is. open or closed. Specification 203,872 is referred to.
Patent GB-815717-A (GB)
Title: Television receiver
IPC: H04N9/64
Filed: 1955-11-18
Abstract: 815,717. Diplex radio signalling. SYLVANIA ELECTRIC PRODUCTS Inc. Nov. 18, 1955 (Nov. 18, 1954], No. 30724/58. Divided out of 815,716. Class 40 (5). [Also in Group XL (b)] A reflex amplifier is used for both the 3.58 Mc/s. colour sub-carrier and, if desired, the 4.5 Mc/s. intercarrier sound signal, in a colour television receiver. A broad-band I.F. amplifier 135, 136, 137, 138, feeds both video and sound channel signals to an anode-bend detector 145. The demodulated luminance video signals are taken from the cathode of the detector 145 to a video amplifier 104, and conventional C.R.T. circuits. The 3.58 Mc/s. colour sub-carrier and the 4.5 Mc/s. intercarrier sound signal are obtained from tuned circuits 160, 161 in the anode circuit of the detector 145 and reflexed through the last two stages 137, 138 of the I.F. amplifier (which are not subject to A.G.C.). The amplified signals appear across tuned circuits 175, 176 from whence the 4.5 Mc/s. intercarrier signal is passed via a limiter and discriminator 115 to the audio output; and the 3.58 Mc/s. colour sub-carrier is passed to the colour demodulators 120, 121. A further 3.58 Mc/s. signal is obtained from transformer 176 and used as disclosed in Specification 815,715 to reduce unwanted patterning. In order to prevent a 920 Kc/s. beat note from being developed in the detector 103 between the 3.58 Mc/s. signal and the 4.5 Mc/s. signal, a rejection filter 210 is included. The 4.5 Mc/s. intercarrier signal may alternatively be conventionally amplified, only the 3.58 Mc/s. signal being reflexed.
Patent GB-209055-A (GB)
Title: Improvements in multi-barrel guns
IPC: F41A25/02
Filed: 1923-12-06
Abstract: 209,055. Schneider et Cie. Dec. 23, 1922, [Convention date]. Recoil apparatus.-Relates to a multi-barrel gun having an even number of barrels arranged in pairs or equal groups so that the energy of recoil of one barrel or of one group of barrels is utilized wholly or partially in a suit. able recuperator for running out the other barrel or group of barrels, thereby maintaining an approximately constant position for the centre of gravity of the combined parts during firing. According to the invention, the recoilbrake of one system is modified to act as the recuperator for the other system, all the parts being carried by the common oscillating mass of the gun. In the form shown in inverted plan in Fig. 2, two barrels A and B carrying brake pistons D, E are mounted in a common cradle C carrying the brake cylinders F, G with counter-rods f, g. The recoil of the barrel A causes the piston D to force liquid from the cylinder F through a passage H into the cylinder G to return the barrel B to firing position. The recoil of the barrel B on firing acts in a similar manner to restore the barrel A. In a modification shown in Fig. 7, the piston rods D, I and E, J attached to the barrels are in telescoping parts, the pistons I<1>, J<1> being grooved to engage tapered keys F<1>, G' in brake cylinders F, G, which are connected by a tube K. The recoil of the barrel A to the position shown acts through the fluid pressure to move the barrel B forwards, a projection B<1> on this barrel engaging a rod M to stress a spring recuperator N that reacts to return the barrel B. The return of the barrel B acts through fluid pressure to restore the barrel A to a position of rest in line with the barrel B.
Patent GB-930766-A (GB)
Title: Improvements in or relating to the purification of titanium trichloride
IPC: B21B39/00
Filed: 1961-08-25
Abstract: Titanium trichloride initially purified by washing with an inert aliphatic, cycloaliphatic or aromatic hydrocarbon, e.g. n-heptane, is further purified by refluxing or agitating with 1-50 mole per cent (based on titanium trichloride) of triphenyl phosphine together with an aliphatic, cycloaliphatic or aromatic hydrocarbon for approximately one hour at a temperature not exceeding 100 DEG C.  The precipitate is then suction filtered and washed again with an inert hydrocarbon, e.g. n-heptane.  The purified titanium trichloride is subsequently used in conjunction with an organic aluminium compound as a catalyst for a -olefin polymerization.
Patent GB-739276-A (GB)
Title: Improvements in and relating to the production of screened photographic images
IPC: G03F5/20
Filed: 1952-12-04
Abstract: 739,276. Half-tone photographic images. CONRAD, R.M. P. Dec. 4, 1952 [Dec. 12, 1951], No. 30827/52. Classes 98 (1) and 98 (2). A method of producing a screened photographic image suitable for use in manufacturing a photogravure printing plate of the type in which the screen cells are of different lateral dimensions and different depths in dependence on the variations in light and shade in the image to be printed by the plate comprises the steps of producing a continuous tone positive transparency by contact printing from a continuous tone photographic negative, placing the transparency in a first plane, placing a photosensitive emulsion in a second plane on the opposite side of a lens from the first plane, projecting an image of the transparency through a half-tone screen on to the emulsion in the second plane with the aid of a light source and the.lens, removing and processing the emulsion to produce a screened negative of the continuous tone positive transparency, removing the transparency from the first plane and placing the continuous tone negative into the first plane placing the screened negative in the second plane, placing a further photographic emulsion in contact with the image on the screened negative on the side thereof remote from the lens, removing the half-tone screen and with the aid of the light source and the lens projecting an image of the continuous tone negative on to the screened negative to expose the further emulsion. As shown, Fig. 1, the continuous tone positive 10 is printed by light 12 through lens 13, compensating glass 16 and screen 17 onto plate 14. In the second operation, Fig. 2, the screen 17 is removed, the negative 18 from which the positive 10 was made takes the place of the positive 10 and this is printed through a second compensating glass 19 and the developed plate 14 on to a further plate 20. Emulsions of the several plates are shown in thick black lines, plate 14 in Fig. 2 being laterally reversed. Compensating glasses 16, 19 have the thicknesses of the support 14 and the half-tone screen 17 respectively. In printing transparencies and sensitive emulsions are located accurately in the planes 11, 15 respectively, as by the apparatus of Specification 693,703.
Patent GB-1015718-A (GB)
Title: Microwave magnetron oscillators
IPC: H01J25/50
Filed: 1964-08-04
Abstract: 1,015,718. Magnetrons; travelling-wave tubes. CSF.-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 4, 1964 [July 31, 1963], No. 30841/64. Heading H1D. A microwave oscillator comprises a number of magnetron structures coupled to each other and disposed within an elongated evacuated enclosure 1, wherein one end wall of the enclosure is provided with a window 3 transparent to electromagnetic waves and an absorption member 7 disposed within the enclosure adjacent its other end wall 2. As shown, the anodes of each structure consists of an interdigital structure composed of four elements 6, 6<SP>1</SP> surrounding emissive cathodes 4. Alternatively six anodes elements may be provided and the electron source may be disposed outside the interaction space. The wave absorption member 7 consists of a wedge-shaped block of absorbing material or a metallic block covered with a layer of absorbing material and may be provided with  a cooling system; the block has associated therewith interdigitating elements 8, 8<SP>1</SP>. In operation, part of the power generated by the magnetron nearest the wave absorber is reflected and the remaining individual magnetrons in the cascade oscillate at the same frequency. The oscillator may be tuned electronically by adjustment of the anode voltage.
Patent GB-727226-A (GB)
Title: Improvements relating to bearing assemblies
IPC: F16C33/12
Filed: 1953-11-09
Abstract: The composition of various materials forming journals are given in the following table in per cent by weight:-  <TABS:0727226/II/1>
Patent GB-1186233-A (GB)
Title: A Method for the Production of Yarn and a Yarn Obtained by Applying the said Method.
IPC: D02G3/40
Filed: 1967-07-05
Abstract: 1,186,233. Twist-free yarns; sizing. NETHERLANDS APPLIED SCIENTIFIC RESEARCH FOR INDUSTRY, TRADE & COMMERCE. 5 July, 1967 [7 July, 1966], No. 30930/67. Headings DID, D1F and D1W. A method of producing a twist-free yarn from a roving (or sliver) of staple fibre material comprises wetting the roving, drafting it to form a thinner sliver, false-twisting the sliver and winding the sliver into a crosswound package, the package being sized to form a package which can be unwound. The drafting is preferably carried out on a device comprising two pairs of rollers one roller of each pair being serrated and the other of each pair being of rubber. In a preferred embodiment, the wet sliver is washed with a starchgrain suspension, then passed through the drafting device to a pneumatic false-twist device and then wound into a package, the package is then steamed to gelatinize the starchgrains, and the package is then dried. Preferably the starch-grain suspension is also fed to the delivery rollers of the drafting device, excess starch-grain suspension being collected and recirculated to the supply.
Patent GB-733761-A (GB)
Title: Improvements in or relating to x-ray cameras
IPC: G03B42/02
Filed: 1953-11-09
Abstract: 733,761. Photographic cameras. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 9, 1953 [Nov. 12, 1952], No. 30938/53. Class 98 (1). In a mirror camera for photographing X-ray images on a luminescent screen, having a mirror 18 and a cassette which is introduced in front of the mirror through a lateral slot 26 and which contains a film or plate, the cassette is moved into position in the direction of the optical axis so that locating surfaces 22 on the cassette are pressed against pointed members 20. Preferably three pointed members 20 are provided and the surfaces 22 are, preferably, extensions of the spherical image surface of the mirror 18 or concentric with that surface. The cassette is positioned axially by the action of spring 32 when the tension therein is applied to knob 16 of screw 12, held in catcher 30, by turning. handle 35 so as to retract cam 33. Handle 35 is thereby positioned in front of handle 38 of the cassette, thus preventing its removal. As shown in Fig. 3, the cassette may comprise a dark slide 1 and a supporting plate 11, screw 12 being provided in plate 13 for clamping the film 9 between plate 11 and frame 10. Plate 13 is of cruciform shape and is fitted into the cassette diagonally and locked in grooves in the side walls by a 45 degree turn.
Patent GB-739316-A (GB)
Title: Tube supported wall
IPC: F22B37/20
Filed: 1953-11-10
Abstract: 739,316. Furnace walls. BIGELOWLIPTAK CORPORATION. Nov. 10, 1953 [Nov. 17, 1952], No. 31072/53.. Class 51 (1). A wall is supported on the tubes of a boiler by means of a clamp 5 which encircles a tube and which carries a wall supporting bolt 49, the bolt projecting transversely from the tube with its head adjacent the tube.
Patent GB-722495-A (GB)
Title: Apparatus for treating agglomerates with a coal and pitch base
IPC: C10B7/14
Filed: 1952-12-08
Abstract: 722,495. Oxidizing fuel agglomerates; tunnel kilns. HOUILLERES DU BASSIN DU NORD ET DU PAS-DE-CALAIS. Dec. 8, 1952, [Oct. 20, 1952.] No. 31124/52. Addition to 716,537. Classes 50 and 51 (2). Plant for effecting a two-stage oxidation of coal-pitch agglomerates, followed by cooling in an inert atmosphere, as described in the parent Specification, comprises a tunnel furnace 1 of three sections with side distributers ducts 4, 5, for introduction and withdrawal of gases caused to pass transversely through the mass of agglomerates contained in trucks having perforated bottoms 16 and a fireproof baseplate 17 with side edges fitting in recesses in the furnace walls. As shown diagrammatically in Fig. 3, gases are admitted through pipes 6a, 6b, 6c in the three sections and exhausted through pipes 7a, 7b, 7c; thus for the middle section a fan 25 draws gases from duct 4 and some of the exhaust gases may be recirculated by means of a pipe 28 connecting pipe 7b with the fan. The first section is supplied with air through an inlet 3 and gases delivered to duct 5 in the second section. Duct 4 supplies this section with combustion products from a hearth 8 mixed in a chamber 9 with cooler gases from the third section and hot gases from the first. The third'section is fed with gases from the first after passing through a cooler 13.
Patent GB-1098997-A (GB)
Title: Cylinder head of an internal combustion engine comprising two intake and two exhaust valves for each cylinder
IPC: F02B3/06
Filed: 1965-07-22
Abstract: 1,098,997. I.C. engine valve gear; induction passages. H. LIST. July 22, 1965 [Aug. 21, 1964], No.31152/65. Heading F1B. In an I.C. engine cylinder head 1 having two inlet and two exhaust valves per cylinder, the inlet ports 14, 14' are of spiral form and the inlet ducts extend upwardly towards the top of the cylinder head to a common suction port. The inlet ducts are of similar shape and length to provide substantially identical flow conditions and swirl rates at both inlet valves. The suction port (16), Fig. 2 (not shown), is defined by a tube (17) inserted between the top of the head (1) and a valve gear cover (2). In a further embodiment, Fig. 3 (not shown), the pairs of inlet valves (9, 9') of adjacent cylinders communicate with a common suction port (16), Fig. 4 (not shown). The pairs of inlet valves (9, 9'), Fig. 5 (not shown), are each actuated by a bridge piece (11), guided axially by a pin in the cylinder head.
Patent GB-974943-A (GB)
Title: Centrifugal multi-chamber countercurrent exchange device with removable disc columns
IPC: B01D11/04
Filed: 1962-08-14
Abstract: <PICT:0974943/C1/1> <PICT:0974943/C1/2> A centrifugal multi-chamber countercurrent exchanger 10 has a shaft 12 journalled for rotation in a suitable supporting structure and a drum or rotor 14 has a plurality of radially extending cavities or mixing chambers 22 and 24 in two vertical planes without communication between them.  Removably positioned in each of the working mixing chambers is a novel disc column, e.g. as shown in Fig. 4, though the chambers may be sealed for idle condition, as shown in Fig. 1, with relation to the mixing chambers 24.  The mixing chambers may also be filled with Raschig rings, Berl saddles, asbestos or glass wool.  The heavy liquid enters the mixing chambers 22 or 24 near the inner end thereof through the heavy liquid inlet tubes 52 while the light liquid enters under pressure near the outer end through the light liquid inlet tubes 60. They travel in countercurrent and pass out through the corresponding outlet 42 and 44 via the common annuli 32 and 3. Specifications 963,166 and 974,942 are referred to.
Patent GB-1120694-A (GB)
Title: Improvements in cooled turbine blades
Inventor: FOURE CLAUDE DESIRE
IPC: F01D5/18
Filed: 1966-07-12
Abstract: 1,120,694. Turbine blades. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. July 12, 1966 [Aug. 2, 1965; June 23, 1966], No.31196/66. Heading F1T. A gas turbine blade 1 mounted on a rotor 3 has internal sealed passages 6, 7 containing a liquid coolant, and passages 2a, 2b adjacent the leading and trailing edges, respectively, supplied with air from the engine compressor by way of the rotor interior, the air exhausting from passages 2a, 2b through orifices 8a, 8b to flow over the exterior of the blade working surfaces. The liquid coolant may be water or a sodiumpotassium eutectic which is liquid at both ambient and turbine operating temperatures. Orifices 8a, 8b may be replaced by porous wall sections. Ribs 5 on the blade root 4 assist the cooling.
Patent GB-858950-A (GB)
Title: Improvements in or relating to refrigeration apparatus
Inventor: WILSON HARVEY WILFRED
IPC: F25B41/00
Filed: 1957-10-07
Abstract: 858.950. Freezing apparatus. JACKSTONE FROSTER Ltd. Dec. 30, 1958 [Oct. 7, 1957], No. 31293/57. Class 29 [Also in Group XXVIII] In plate freezing apparatus in which a stack of movable plates 3 are supplied with refrigerant from fixed headers 6, the inlet and outlet of each plate are connected to their respective headers by two telescopic rigid pipes 7, 8 which have swivel connections 5, 4 with the header and the plate.
Patent GB-286784-A (GB)
Title: A method of rapidly opening and closing valves and the like
IPC: F16K31/54
Filed: 1926-12-10
Abstract: 286,784. Rhind, A., and Rhind, G. F. A. Dec. 10, 1926. Actuating-mechanism. - An arrangement for readily opening and rapidly closing a reciprocating valve comprises a rack a on the valve stem engaging a hand-operated pinion c. The valve can be held locked in the open position by a tripping lever j having teeth m engaging the pinion or the rack. On releasing the tripping lever the valve closes immediately by gravity or an attached spring. In the arrangement shown a pocket s in the valve casing forms a cushion which protects the valve from undue shock in closing.