baber/WOPTO huggingface dataset:
Patent GB-651508-A (GB)
Title: Improvements in holders for gripping cleaning pads
IPC: A47L13/46
Filed: 1946-10-28
Abstract: 651,508. Holder for cleaning pads. ADAMS, G. S. Oct. 28, 1946, No. 19737/49. Divided out of 31907/46 under which a Specification was laid open to inspection under Sect. 91 of the Acts, April 30, 1947. [Class 61(ii)] In a holder for a cleaning pad, see Specification 651,454, the pad is secured by resilient means to the extremity of a curved end portion of a tubular stem and is releasable therefrom by means operated from the end of the tubular stem remote from the pad. In the embodiment of Fig. 1, a cylindrical pad 28 is held against the mouth of the curved portion of the tube 10 by a loop of wire 24 pulled inwardly by a spring 20 which is held under tension by a rod 16. The pad is released by turning the rod 16 whereby a pair of diametrically opposite projections 30, Fig. 2, on the rod are disengaged from corresponding abutments 32 in the tube allowing the rod 16 to slide inwardly. In the embodiment of Figs. 3 and 4, the pad 210 is gripped between jaws 42, 44, closed by means of a compression spring 36 which acts upon a stud 130 secured to the end of a rod or wire 128 which is displaceable inwardly by means of the knob 132 to release the pad.
Patent GB-1067573-A (GB)
Title: Process for preparing perfluorocyclopentadiene
Inventor: HASZELDENE ROBERT NEVILLE
IPC: C07C17/23
Filed: 1963-05-17
Abstract: Perfluorocyclopentadiene is prepared by reacting 1,2,3,4 - tetrachlorohexafluorocyclopentane with a metallic dechlorinating agent.  The reaction may be effected in the vapour phase at 150-750 DEG  C. under a pressure between 0.1 mm. and 10 atm., the preferred dechlorinating agent being iron or nickel. Preferably, however, the reaction is effected in a solvent, a number of which are specified, suitably under reflux, the preferred dechlorinating agent in this case being activated zinc dust, although others are specified also. Examples are given. The tetrachlorohexafluorocyclopentane used as starting material may be obtained by reacting perchlorocyclopentadiene with a metal fluoride suitably at 100-300 DEG  C.  Cobalt trifluoride is the preferred fluoride, but others are specified also.  Examples are given of this reaction, the products including pentachloropentafluorocyclopentane and trichloroheptafluorocyclopentane, as well as the desired tetrachlorohexafluorocyclopentane.
Patent GB-809666-A (GB)
Title: A swash-plate-type pump or engine
IPC: F01B3/00
Filed: 1956-06-26
Abstract: 809,666. Swash plate pumps. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. June 26, 1956 [June 27, 1955 ; March 7, 1956], No. 19811/56. Class 102(1). [Also in Group XXIX] A swash plate pump having hollow pistons 34 receiving and supplying liquid through ball joints in a driving flange 31 and channels (not shown) in a supporting block 32 has cylinders 33 mounted on the swash plate 36 by ball joints 35. In an alternative construction, the ball joints 35 are replaced by blocks of rubber. The cylinders and swash plate are carried by a yoke 37 pivoted to the block 32 and a pin 6 mounted in the flange 31 by a universal joint 8 and rotated by the driving shaft 30 rotates the swash plate and cylinders. If the pump is conveying a lubricant, the joints are lubricated by the conveyed liquid and non-return valves are fitted to prevent flow from the pressure to the suction sides.
Patent GB-1190243-A (GB)
Title: Improvements in Evaporators
Inventor: SEAFORD FREDERICK ANTHONY
IPC: B01D3/10
Filed: 1967-04-29
Abstract: 1,190,243. Evaporators, vacuum pans. FLETCHER & STEWART Ltd. 22 April, 1968 [29 April, 1967], No. 19856/67. Heading B1B. An evaporator, suitable for the concentration of sugar syrup, is heated by steam supplied to hollow fins 14 spaced, in two horizontal rows 10, 12, transversely across the lower half of the evaporator, and is provided with rotatable stirrer blades 22 mounted on two horizontal shafts 16, 18 which are rotated in opposite directions, whereby the stirrer blades move through the spaces between the heating fins 14. The liquid to be evaporated is introduced into the lower part of the evaporator through tube 28 which has a series of outlet holes 30, and is surmounted by deflector plate 32. The evaporator has sight-glasses 42, and the interior is illuminated by lamps 43. The heating steam is supplied to fins 14 through manifolds 15 and inlets 14a; and the condensate is discharged through outlets 14b. Instead of being heated by steam, the fins may be heated electrically.
Patent GB-1220937-A (GB)
Title: Surface coatings
Inventor: KINSLER DAVID
IPC: C09D131/02
Filed: 1967-04-29
Abstract: 1,220,937. Coating compositions. DUNLOP CO. Ltd. 26 April, 1968 [29 April, 1967], No. 19869/67. Heading C3P. [Also in Division B2] Vinyl esters of straight chain alkanoic acids are polymerized in aqueous emulsion using a redox catalyst and an acid- and alkali-stable, corrosion-inhibiting, emulsifying agent. Suitable emulsifying agents are sodium or amine salts of dialkyl or monoalkyl phosphate esters or phosphate esters of ether alcohols or the sodium salt of lauroyl sarcosine. There may also be present a non ionic surfactant, e.g. polyethylene oxide ethers, or a colloid, e.g. hydroxyethyl cellulose. The catalyst is a persulphate or hydrogen peroxide with a phosphorous or hypophosphorous salt or ester or is a persulphate or organic peroxide or hydroperoxide with a salt or ester of a reducing sulphur acid, e.g. formaldehyde sulphoxylate. An alkali hydrogen or dihydrogen phosphate or benzoate buffer with sodium nitrite is preferably added, or sodium carbonate; or bicarbonate or borax may be used. The polymer is a homopolymer of vinyl acetate or propionate or a copolymer particularly with vinyl tertiary alkanoate. The emulsions are usedto form clear coatings or with the addition of pigments as paints. Preferably a defoamer, a non-volatile buffer, e.g. diethylamino ethanol and a coalescing agent, e.g. ethylene glycol monoacetate monobutyl ether are added. The preferred pigments are corrosion-inhibiting, e.g. zinc tetroxychromate, strontium chromate, barium metaborate, zinc potassium chromate, lead silicochromate, zinc molybdate or coprecipitated zinc phosphate/zinc chromate; also mentioned are barytes, whiting, iron oxide and titanium dioxide. The paints are tested on shot-blasted mild steel plates.
Patent GB-1523642-A (GB)
Title: Vulcanization method and apparatus
IPC: B29C35/00
Filed: 1975-05-12
Abstract: 1523642 Vulcanizing long lengths GOODYEAR TIRE & RUBBER CO 12 May 1976 [12 May 1975] 19917/75 Heading C3E A length of elastomeric or plastomeric material is vulcanized by propelling the material through an enclosure, within which it is subjected to vulcanizing conditions, in the form of a helix, the helix convolutions in part passing over and contacting a generally cylindrical rotary member and in part being suspended beneath, the peripheral speed at those different parts of the rotary cylindrical member in contact with different convolutions differing in order to preserve a desired length of the suspended part of the convolutions. Three different apparatuses illustrated. In the first embodiment, illustrated in Figs. 1 and 2 (not shown), the cylindrical member is provided with circumferential material guide rings having a supporting surface at an angle to the axis of revolution and associated means for movement of each convolution of the material axially in relation to its associated guide means. In the second apparatus, illustrated in Fig. 3 (not shown), the rotary member has a flexible surface subdivided into independently deformable circumferential zones each to accommodate one turn of said material. In the third embodiment illustrated in Fig. 4 (not shown), the rotary member is provided with a plurality of circumferential guide members capable of rotation around the drum independently of the drum and of each other.
Patent GB-314991-A (GB)
Title: Improvements relating to cinematographs
IPC: G03B15/08
Filed: 1929-06-28
Abstract: 314,991. Schabet, L. July 7, 1928, [Convention date]. Kinematograph apparatus. - The casing of apparatus capable of use as a camera or projector comprises a cover d hinged at e, the cover being shaped to form the parts of the side walls extending beyond the frame b carrying the gate n, and also to form semicircular projections which cover cut-away portions k of the walls permitting access to the spools h' arranged side by side on their spindles i<1>. The film passes from one spool between a sprocket p and pressure rollers l, forms a loop, and passes through the gate and over a second sprocket to the take-up spool. The cover may carry an image-viewing lens q, and the apparatus may be provided with a spring motor c. When the apparatus is used as a projector, the cover is opened and a lamp is placed to illuminate the gate.
Patent GB-828537-A (GB)
Title: Low temperature polymerization of isoolefines
IPC: C08F10/00
Filed: 1956-06-27
Abstract: A process for the preparation of polymers of iso-mono-olefine hydrocarbons containing 4-8 carbon atoms or copolymers thereof with a multiolefinic hydrocarbon, at a low temperature with a Friedel-Crafts catalyst, in a reaction zone having circulating and cooling passages, is started up by the following steps (1) the circulating passages are filled with a pre-cooled solution of a monomer in an inert diluent at a temperature above its freezing-point, (2) the solution is circulated, (3) a refrigerant at below - 155 DEG  F. is circulated in the cooling passages, (4) and the polymerization is initiated by feeding into the reaction zone a Friedel-Crafts catalyst in an inert diluent at a temperature above that of the refrigerant and above its own freezing-point. For the preparation of copolymers a dilute feed of a solution of iso-olefine (containing less than 8% of iso-olefine) in an inert solvent, is circulated and the refrigerant at - 155 DEG F. introduced to the cooling jacket simultaneously with a feed of iso-olefine (20-40%) and multiolefine (0.2-2.0%) in an inert solvent, at feed rates such that when the cooling passages are full of refrigerant, the contents of the circulating passages are at the desired concentration for the reaction.  Isobutylene, 3-methyl-butylene-1, and 4-ethylpentene-1, together with isoprene, butadiene-1,3, piperylene, hexadiene-2,4, dimethallyl, cyclopentadiene, myrcene and 6,6-dimethyl-fulvene are mentioned and the preparation of butyl rubber in methyl chloride is described. Specifications 587,080 and 828,536 are referred to.
Patent GB-1464053-A (GB)
Title: Aqueous drilling fluids containing an additive for reducing gel strength
IPC: C09K8/20
Filed: 1975-05-13
Abstract: 1464053 Drilling fluids TEXACO DEVELOPMENT CORP 13 May 1975 [22 July 1974] 19975/75 Heading E1F An aqueous drilling fluid having less than 200 parts per million of calcium dissolved therein and a pH greater than 10 contains, for reducing gel strength and yield point, hydrolysed cereal solids comprising 15 to 25% by weight of di-, tri-, tetra-, and pentasaccharides, and 75 to 85% by weight of hexasaccharides and above. The fluid may also contain lithium, sodium, potassium or ammonium chromates or dichromates.
Patent GB-430124-A (GB)
Title: Improvements in or relating to methods of and machines for making headed blanks for bolts and similar screw-threaded articles
IPC: B21K1/44
Filed: 1934-07-07
Abstract: 430,124. Making bolts &c. NATIONAL MACHINERY CO., Tiffin, Ohio, U.S.A.- (Assignees of Friedman, J. H.) July 7, 1934, No. 19989. Convention date, July 11, 1933. [Classes 83 (ii) and 83 (iv)] Drawing and forging dies.-In extruding a length of stock to form a bolt &c. blank, the blank usually comprising a head 15, Fig. 3a, and a shank portion 9<a> connected by a cylindrical portion 16 intermediate them in diameter, the diameter of the connecting portion 16 is reduced to that of the shank portion 9<a> by a further extrusion operation. A die 17, Fig. 4, for this purpose has a tapered guiding throat 18 leading to a bore of the same diameter as the shank portion 9<a>. The die 20, Fig. 6, forming the initial blank may have a bore stepped down twice to form in one operation a shank portion, intermediate portion, and an unreduced portion adapted to be upset to form the head. The resulting blank has a grain structure free from re-entrant curves and a shank of uniform diameter up to the base of the head which has a diameter greater with respect to that of the shank than could be produced by a single upsetting blow on material of the diameter of the shank.
Patent GB-1102614-A (GB)
Title: Die-casting machine
IPC: B29C45/53
Filed: 1965-05-12
Abstract: 1,102,614. Casting-machines. GEBR. BUHLER. 12 May, 1965 [13 May, 1964], No. 20030/65. Heading B3F. [Also in Division F1] In a machine in which casting material is injected into dies 4 through a sleeve 15 by a heatresistant plunger 13 attached to a piston 11, the latter is driven by oil (e.g. delivered by a pump 32) to give an initial slow injection and is then given a rapid injection movement by oil at higher pressure from an accumulator 20. In the embodiment shown, a valve 46 is opened to apply the higher pressure. To reduce the kinetic energy built up in the injection stroke, the plunger 13, piston 11 and its rod 12 are made of light material, e.g. aluminium, and the oil volume is kept low by locating the accumulator near the piston cylinder 10. In fact, the accumulator (20<SP>1</SP>), Fig. 3 (not shown), may be combined with the cylinder (10<SP>1</SP>), there being a dividing wall (61) defining a valve seat for a solenoid-controlled valve (63) which by slight, and then full, opening gives the slow then rapid injection. In either embodiment, the accumulator 20 (20<SP>1</SP>) is a chamber divided by a free piston 21 (21<SP>1</SP>) into two parts, one part 27 being connected to a cylinder 25 (25<SP>1</SP>) of compressed gas for giving the high injection pressure. In the present embodiment, a reversing-valve 40 in one position directs oil from the pump 32 to operate the piston 11 and, in the other, directs the oil to retract the piston. In the second embodiment, the reversing-valve (80) in the one position does not alone operate the piston (11<SP>1</SP>) but permits maintenance of the oil in the accumulator (20<SP>1</SP>) by the variabledelivery pump (70).
Patent GB-1178866-A (GB)
Title: Reading Apparatus
IPC: G06V10/30
Filed: 1967-05-01
Abstract: 1,178,866. Character recognition. FARRING- TON ELECTRONICS Inc. 1 May, 1967 [25 May, 1966], No. 20084/67. Heading G4R. Character recognition apparatus scans the character along a plurality of scan lines and combines the resulting signals to obtain an essentially horizontal projection of the character. The quantized video signal derived from scanning a character in a series of vertical scan lines with a C.R.T. is fed to recognition logic via a one-character (widest) delay and to height means for deriving a signal representing the maximum vertical extent of the character which is applied to control time-constants in the recognition logic. In the height means, the quantized video signal is supplied via an OR gate to a one-scan-line delay whose output is fed back to the OR gate and thus constitutes a signal representing a horizontal projection of the character so far. Noise pulses in this signal are then removed as a consequence of their narrow width and narrow gaps in the character are filled up similarly. These functions are performed by so-called M-units which delay the leading edge of a pulse but not the trailing edge so that pulses narrower than the delay are eliminated altogether. Two such M-units with an inverter between them are used for the noise elimination and are in series with a similar arrangement for the filling-in. The result feeds a further M-unit with a delay initially equal to slightly less than the minimum possible character height which controls a device producing a character height signal for controlling the recognition logic. This signal also adjusts the delay of the last-mentioned M-unit to be virtually the same as the actual character height. A locator signal for the character can also be produced by applying the output of the one-scan-line delay to an M-unit to eliminate any pulses derived from rows of characters above and below the row containing the character required as well as noise pulses, the output of the M-unit being corrected for the error in pulse width introduced by the M-unit.
Patent GB-859804-A (GB)
Title: Improvements in and relating to drying regenerated cellulose tubing
Inventor: PETERSON EARL ALBERT
IPC: F26B21/00
Filed: 1959-06-12
Abstract: 859,804. Drying cellulosic tubing. UNION CARBIDE CORPORATION. June 12, 1959, No. 20120/59. Class 34(1) Cellulose tubing C is dried by subjecting the tubing wlhile inflated by a bubble of air trapped between nip rollers 10, 12 to air in a drier D until the moisture content is lower than that desired in the final product and subjecting the dried tubing in an equalizer E to a relatively humid atmosphere corresponding to the desired final moisture content of the tubing. The drier D comprises an upper duct and a lower duct, the upper duct 14 being divided into horizontal passages by vertical partitions, into each of which passages strands of the tubing are introduced through sleeves 25 and each of which contain reversing rollers 15. The strands pass through the reverse section of the upper duct and around rollers 18 to the lower duct which comprises passages 26. Air heated by coils 36 is led by a blower 38 from dampered air inlets 30 through a duct 40 to the passages 26 and thence to the upper duct in countercurrent to the tubing and recirculated by a return section 32. Humidity control of the drying air is maintained by bleeding off air through a dampered duct 46. After drying the strands pass into horizontal passages 58 of the equalizer in which air is humidified by steam introduced at 56 and circulated by a blower 52. Each passage has a controller 60 to regulate the amount of steam heated by coils 62 to regulate the humidity in each duct, any excess of air being bled off through a dampered duct 64.
Patent GB-728028-A (GB)
Title: Automatic exposure regulating apparatus more especially for cine cameras
IPC: G03B7/12
Filed: 1953-07-20
Abstract: 728,028. Photo-electric control of photographic exposures. BURGER, M., and BURGER, E. July 20, 1953 [Aug. 11, 1952,] No. 20133/53. Class 98 (1). [Also in Group XL (b)] In a device for controlling an exposure regulating apparatus, the reaction produced when the pointer of a photo-electric exposure meter arrests a device scanning the pointer is used to operate the exposure controlling means. As shown (Fig. 3), the pointer of a photo-electric exposure meter is constituted in the shape of a fork having arms 2a, 2b, the ends of which are turned up to form catches. Jaws 21, 22 having serrated edges are rotated in opposite directions about a common pivot 26 by a lever 23 carrying pins which co-operate with slots 24, 25 in the jaws. The lever is caused to oscillate about its pivot by means of a pin 28 mounted on a rotatable cam and sliding in a horizontal slot 29, in a vertical bar 30. When the lever 23 is free to rotate bar 30 moves vertically, but when jaws 21, 22 clamp on the end of one of arms 2a or 2b the lever is arrested and lever 30 is constrained by pin 30c sliding in a slot 23a on the lever to move sideways adjusting diaphragm 14 through link 32. In the arrangement of Fig. 2, a single serrated edged member 6 reciprocates vertically on cam-driven member 8. When one side of the member is arrested by arms 4b, 4c of an auxiliary pointer driven by the galvo pointer proper, the jawed member rotates adjusting diaphragm 14. A further diaphragm 18 is provided to adjust the area of the photocell 1 exposed to light in accordance with film speed.
Patent GB-531063-A (GB)
Title: Improvements in caps and sockets for two-ended electric lamps
IPC: H01K1/46
Filed: 1939-07-11
Abstract: 531,063. Lamp caps and holders. GENERAL ELECTRIC CO., Ltd., HARRIS, N. L., and RYDE, J. W. July 11, 1939, No. 20197. [Class 38 (i)] A tubular discharge lamp having at each end a pair of contacts 7 that are engaged with contacts 23 on the holder 8 by inserting the lamp and then turning it on its axis, has a safety device arranged non-symmetrically with relation to the contacts so that the turning of the lamp causes it to engage a member on the holder to render the contacts live only when the lamp is freely inserted. The safety member may be a pin 22, Fig. 2, of elongated crosssection that engages between contacts 21 when turned. A part of the pin may be of circular section to act as a guide. In a modification a circular pin 26, Fig. 3, is placed in line with the contact pins 7 but nearer one than the other, so that on turning the lamp it moves along a groove 24 into engagement with a contact 25. According to the Provisional Specification the safety member may be a pin arranged out of line with the contact pins, or a pin carrying a cross-bar arranged on the axis of the lamp. Specification 507,549 is referred to.
Patent GB-148315-A (GB)
Title: Improvements in or relating to aerial conductors for wireless telegraphy and windingapparatus therefor
IPC: H01Q1/30
Filed: 1920-07-09
Abstract: 148,315. Huth Ges., Dr. E. F. July 1, 1915, [Convention date]. Reels and reel-carriages. - A winch, specially adapted for wireless aerials on aircraft, is formed of a drum 1 of wood or other insulating material which is surrounded by a protecting ring 4 through which the aerial can pass. A shock-absorbing spring is interposed somewhere between the drum and the free end of the aerial, preferably between the drum and the aerial attachment A ratchet device (not shown) is also provided to secure the drum in any desired position.
Patent GB-1146526-A (GB)
Title: Improvements in and relating to electro-magnetic radiation detectors
IPC: G01J1/42
Filed: 1966-05-06
Abstract: 1,146,526. Photo-electric detection system. HONEYWELL Inc. May 6, 1966 [May 6, 19651, No.20232/66. Heading G1A. [Also in Division H1] A radiation detector comprises two discharge systems in separate envelopes, as shown, or in the same envelope (see Division H1). Photons from a discharge between the cathode 15 and anode 16 of the first system 10 of the Geigermuller type initiate a discharge between the cathode 17 and anode 18 of the record system 11. Current in system 10 is limited by resistor 20 so the envelope 13 is not obscured by sputtering, and the bulk of the load current is carried by system 11. Quenching is provided by using an A.C. supply 19. Alternatively a D.C. supply with separate quenching means may be utilized.