baber/WOPTO huggingface dataset:
Patent GB-676927-A (GB)
Title: Improvements in unloading mechanisms for compressors
Inventor: PERSSON CARL ERNST
IPC: F04B25/00
Filed: 1950-08-21
Abstract: 676,927. Fluid-actuated valves. AKTIEBOLAGET ATLAS DIESEL. Aug. 21, 1950, No. 20630/50. Class 135 [Also in Group XXVIII] An automatic unloading device for a multi-stage compressor comprises an unloading passage leading from the low pressure stage and a second unloading passage leading from a higher pressure stage and an unloading valve controlling the opening and closing of the passages and operable to open the latter in response to a drop in pressure in one of the stages. A two stage compressor has a low pressure cylinder connected through an intercooler with a high pressure cylinder 3 from which the compressed gas is delivered through a pipe and a non-return or stop valve. The unloading device comprises a slide valve 17 in a cylinder 16 communicating through a passage 25 with the cylinder 3 and through a passage 24, pipe 21, and the inter-cooler with the low-pressure cylinder. The inter-cooler has a small bleed vent for releasing the pressure therein when the compressor is stationary. During starting the slide valve 17 is moved by a spring 20 to the position indicated in chain-dotted lines whereby the passages 24, 25 are vented to the atmosphere through a port 28. The pressure built up in the inter-cooler acts, through a branch pipe 22 on the valve to move it to the left thus closing the passages 24, 25. The unloading device may alternatively be connected to the delivery pipe of the compressor.
Patent GB-239840-A (GB)
Title: Improvements in pistons for oil engines having self ignition
IPC: F02B3/06
Filed: 1925-08-18
Abstract: 239,840. Acro Akt.-Ges. Sept. 9, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Cylinders receiving liquid fuel.-In a piston for an internal-combustion engine of the type having a combustion chamber b formed in the piston head, one or more thin-walled cups c, with intervening air spaces are inserted in the chamber b. The cups are secured by a washer d. The invention is applicable to aluminium pistons.
Patent GB-339298-A (GB)
Title: Improvements in or relating to valves for controlling the flow of fluid in conduits
IPC: F16K1/24
Filed: 1929-07-05
Abstract: 339,298. Silica Gel, Ltd., and Andersen, S. K. July 5, 1929. Combined lift and tilting valves.-A combined valve and deflector for controlling the flow of fluid through lateral openings, as 12, Fig. 12, in the wall of a conduit, as 11, comprises a plate 14 which is connected, as by hinging as shown, to its operating means, whereby it is capable of accommoda.ting itself readily to its seating. In the arrangement shown, the valve plate 14 is hinged to its operating spindle 16 and is guided laterally between pairs of guide-strips 19, one pair of which is fitted with abutments 18 causing the valve to tilt, in opening, to the deflecting position shown in dotted lines. For very large openings, a multiple arrangement of plates is provided, as shown in Fig. 5, and interconnected by a lever arrangement with a single operating spindle 26. The combined valve and deflector is applicable especially for the treatment of gases, for example in adsorption apparatus, in which a common gas conduit 11 has one or more adsorbers 10 connected therewith, the valves supplying them with gas being independently operable.
Patent GB-531300-A (GB)
Title: Circular rolling press for briquetting fine coal and the like
IPC: B30B11/20
Filed: 1939-07-17
Abstract: 531,300. Briquetting coal &c. PFAHL, W. July 17, 1939, No. 20786. Convention date, July 18, 1938. [Class 87 (ii)] In a briquetting-press, the fine coal &c. is admitted through a shoot 8 to the converging space between a cylindrical smooth wheel 4 and a toothed circlular runner 2, the wheel 4 being provided on both sides with movable boundary members 5 which at their lower parts are pressed, by rollers 6, towards one another, and at the upper parts are spread apart to facilitate the discharge of the briquettes. The runner 2 is mounted on rollers 3 and the wheel 4 is pressed towards the runner by springs or hydraulic or pneumatic pressure. The rope of coal 9 wedges itself between the boundary members 5 and, in consequence, is carried on by the wheel 4 and not by the runner 2. The members 5 are spread apart at the top of the wheel 4 by the action of springs 10, and the briquettes are broken from the rope by the conduit 15 which compels the normally curved rope to follow a straight path. In a modification, two boundary members co-operate with a rigid central flange, two ropes of briquetted coal thus being formed.
Patent GB-260375-A (GB)
Title: Appliance for teaching music
IPC: G09B15/02
Filed: 1925-08-19
Abstract: 260,375. Fanella, C. Aug. 19, 1925. Teaching and practising music.-A device for selecting scales, arpeggios, &c. for practice comprises discs 4 - - 7 bearing certain information. relating to the kinds of exercise to be performed, which is exposed through slots 12 - - 15 in a casing 3, on turning the discs by hand. The key of the exercise is selected by moving a slide 10 longitudinally over a table 16 of the keysignatures, and whether major or minor is determined by an inner part 11 sliding transversely in the part 10. The discs may be turned by fingeroperated worms. The device may be incorporated in the desk or casing of a pianoforte, or may be hooked on to an independent musicstand.
Patent GB-790681-A (GB)
Title: Improvements in or relating to the manufacture of optical filters
Inventor: HOLMAN HERBERT EDWARD
IPC: B29D11/00
Filed: 1954-07-17
Abstract: 790,681. Optical filters. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 23, 1955 [July 17, 1954], No. 20891/54. Drawings to Specification. Class 97(1) An optical filter comprising areas of different filter characteristics is made by coating a support such as glass with a film of material, removing selected parts of the film in the areas to be covered with one of the filter materials so as to expose the support, depositing particles of filter material over the film and support, removing the film, for example by means of a solvent, so as to leave the filter material on the selected parts of the support, then applying a second overall film of material and repeating the process for the second filter material and again for a third filter material if required. The filter may comprise a series of parallel lines having different colour characteristics such as receiving groups of red, green and blue filters. The' film material may be selectively removed to expose the support in straight lines merely by ruling with a razor edge whereupon the film shrinks apart to expose the support. Alternatively the filter may be composed of a series of dots of different colours. The filter materials deposited may be interference layers consisting for instance of nine to eleven thin layers of alternate zinc sulphide and magnesium fluoride, deposited by vapour deposition in vacuo. The film forming material may be celluloid, paraffin wax or beeswax, and solvents suitable for removing these films include acetone carbon tetrachloride. benzine, xylol acetate and trichlorethylene.
Patent GB-948710-A (GB)
Title: Improvements in or relating to the production of books
IPC: B42C19/06
Filed: 1962-05-30
Abstract: 948,710. Making books &c. W. MATUSCHKE. May 30, 1962 [May 31, 1961], No. 20908/62. Heading B6A. A method of making books, pads, periodicals or the like comprises slitting a number of webs longitudinally and feeding them in intimate superimposed relation, applying glue or the like to at least one side edge of the superimposed slit webs, applying a cover-forming web or strip to the glued edge, and then cutting the assembly to form the books or the like. Preferably the original webs have been printed and stored in roll form, and are unreeled, passed through slitting apparatus, fed over turning bars which arrange all the slit webs 2 in spaced superimposed relation, and are brought together between a pair of feed rollers 4 (only one roller shown). One edge of the assembly is roughened by a rotatable rasp 6 arranged between the rollers 4 and a second pair of rollers 5, glue &c. is applied by one or more devices 7, and a cover-forming web 8 is fed from a roll, folded into U-form, and applied over the assembly by rollers 9 and 10. The assembly is then fed to a cutter 11 which cuts off the separate books 12. The cutter 11 may be a guillotine, or a band or circular saw, and is moved in the direction of the assembly feed so that the continuous feed of the assembly is not interrupted; or a system of saws spaced axially of a comm on cylinder may be used so that the saws can operate alternatively, the peripheral speed of the cylinder being equal to the linear speed of the book web assembly. In modifications, the cover material is applied as a thin strip to cover only the glued edge of the assembly; or the assembly of webs is of double width, to provide two books side-by-side, which is first slit centrally and then cut off transversely, and both side edges are previously roughened, glued, and covered. If desired, loose insets may be provided by interleaving a narrow web which is not glued by the devices 7. In a further form, an outer protective wrapper web of transparent plastic material is fed in folded U-shape over the book assembly before the cutting thereof, and the free ends of the wrapper are sealed together by adhesive or by high-frequency welding; or two wrapper webs may be used, and their edges sealed to enclose the book assembly before the cutting operation. Instead of single webs 2, each web may be a folded web to provide two sheets of a book.
Patent GB-499775-A (GB)
Title: Improvements in or relating to shaft bearing and sealing assemblies for pumps
IPC: F16J15/34
Filed: 1937-07-28
Abstract: 499,775. Bearings ; stuffing - box substitutes. DUPREE, JUN., S. F. July 28, 1937, No. 20922. Convention date, Aug. 4, 1936. [Class 12 (i)] [Also in Group XXVI] A unitary bearing assembly for pumps comprises a housing 6 which can be removably fitted within a seat 5 in the pump body 1, a sealing ring 22 pressed against the housing by a resilient member such as a spring 30, shaft bearings 7, 10, and lubricant receiving means therefor. As shown, the bearings 7, 10, are cylindrical bushes having lubricant channels 13, 14. A thrust collar 33 is fixed on the shaft 11. The housing 6 has oil passages 15, 16, communicating with an oil reservoir 12 in the pump body. A packing device comprising a ring 27 and spring 30 is mounted within a cavity formed in the pump impeller 26, the ring 22 having projections 23 engaging slots in the boss 25 of the impeller so that it rotates with the shaft. One or both bearings 7, 10, may be replaced by ball bearings, and instead of the ring 22 engaging a boss 21 on the housing, it may engage an inwardly turned part of the housing as shown in Fig. 20. In addition the sealing members 30a, 87, Fig. 20, may be mounted within a cup 65 fixed to the spindle. The ring 87 is U-shaped and the face bearing against the ring 22 may be grooved. In a modification, the side flanges of the ring 87 project radially inwardly.
Patent GB-631709-A (GB)
Title: Ultra high frequency electric discharge tube
IPC: H01J17/04
Filed: 1947-08-01
Abstract: 631,709. Discharge apparatus. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 1, 1947, No. 21082. Convention date, Nov. 13, 1943. Drawings to Specification. [Class 39 (i)] A copper resonator in a discharge tube having a filling of water vapour, has a coating on the surfaces of the resonator within the tube which prevents oxidation of the copper by the water vapour. Black copper oxide is a suitable coating and the invention may be applied to a T-R switch having a filling comprising water vapour at a pressure of 7 mms. and hydrogen at a pressure of 10 mms.
Patent GB-1261772-A (GB)
Title: Container and closure cap therefor
Inventor: RODER EBERHARD
IPC: B65D41/04
Filed: 1969-04-24
Abstract: 1,261,772. Closure caps. E. RODER. 24 April, 1969 [25 Aprils 1968], No. 21100/69. Heading B8T. A flexible closure cap 10 for non-circular containers which may be made of plastics comprises an inner cylindrical tubular socket 11, a top wall 12 and sidewalls 13 terminating in a lower edge 14. Thread courses 15 in the tubular socket 11 correspond to thread courses 9 on the container neck 6. An elastic sealing member 16 arranged within the socket 11 may be held by an annular bead 17 or else by the ends of the thread courses 15. On placing the closure cap 10 on the container 2 and twisting until its lower edge 14 contacts the container shoulder surface 4, an angle is formed between the edge and shoulder, and on continued twisting of said cap through said angle, the lower edge 14 snaps over rounded or bevelled shoulder edges 3 due to flexible deformation of the container sidewalls 13 of the cap 10, a seal being provided by the bottom wall of the inner tubular socket 11 or by the inserted elastic seal 16.
Patent GB-912941-A (GB)
Title: Electrical heating and ventilating apparatus
IPC: F24H3/04
Filed: 1960-06-16
Abstract: 912,941. Thermal switches. BRAUN, E., and BRAUN, A. [trading as BRAUN, M. [Firm of]]. June 16, 1960 [July 2, 1959], No. 21159/60. Class 38(5). [Also in Group XXXV] Switching means for controlling electric heating and ventilating apparatus (Group XXXV) comprises a thermal switch mechanically coupled to a manually-operated rotary switch. A vertically slidable strip 24 is attached to a bimetal switch member 28 and is movable by the engagement of a pin 25 in a slot 21 formed in a disc 20. A spring 26 draws the strip downwardly and the disc is mounted on the shaft 43 of a rotary switch assembly 44 controlled by a knob 45. The switch shaft also carries a freely-mounted disc 50 slotted at 51 for engagement with a pin 52 projecting from a cam 44a of the assembly 44. As shown, a contact arm is engaged in a depression 53 of the disc and a contact (not shown) associated with the arm is closed. An indicator member 55, part of which is visible through an aperture in the knob 45, is rotatably mounted on a boss 54 of the knob, and a rib 59 on the member 55 is urged by a spring 61 into a slot between two ribs 60 formed on the rear face of the knob 45. A fixed abutment 58 is engageable by shoulders 57, 62 of the indicator member and by a projection 56 on the rear of the knob. A coloured portion of the member 55 is visible through the knob until either of the shoulders 57, 62 engages the abutment 58. Relative rotation between the member 55 and the knob then occurs and the coloured indication is no longer visible.
Patent GB-1473576-A (GB)
Title: Electrostatic printer support with controlled electrostatic surface voltage
Inventor: THOMPSON LESTER E
IPC: G03G15/34
Filed: 1974-05-13
Abstract: 1473576 Corona charging apparatus ELECTROPRINT Inc 13 May 1974 [11 May 1973] 21160/74 Heading H1X Electrostatic printing apparatus wherein a printing medium 20 is transported past an elongate printing zone 30 comprises an ion source 10 forming a corona and arranged on one side of the medium opposite the printing zone, an electrode 24 arranged on the other side of the medium behind the printing zone, a source of potential (not shown) connected between the source 10 and the electrode 24 to generate an electric field therebetween, and field potential modifying means 26 positioned between the electrode 24 and the medium 20 to modify the field such that the potential at the surface of the medium is a maximum at the printing zone 30 and decreases gradually on either side thereof. The means 26 may be a high resistivity body. The arrangement prevents secondary ionization which occurred at the junctions of the electrode 24 and the material 26 in a prior arrangement in which the electrode 24 extended to the medium supporting surface 28. The apparatus further includes a modulator 12 comprising a multilayered element 16 having a plurality of apertures 18 disposed in a line. The medium 20 may be paper, supported by a composite bar 14 comprising the electrode 24, material 26 and a support member 22, e.g. of ceramic. Uncharged toner particles or ink droplets 34 introduced into the space 36 between the modulator 12 and paper 20 are charged by ions issuing through the modulator apertures 18. Conductors for connection to ground may be bonded to the material 26 (Figs. 4 to 6, not shown) at or near the junctions with support 22. The material 26 may comprise two portions of different resistivities (Fig. 11, not shown). In an alternative embodiment (Fig. 8, not shown) the support bar 14 is replaced by a roller comprising a cylindrical electrode embedded in high resistivity material, which roller is supported by two further rollers, one or both of which may be driven.
Patent GB-617418-A (GB)
Title: Improvements in densitometers
IPC: G01J1/22
Filed: 1945-08-20
Abstract: 617,418. Densitometers utilizing photoelectric cells. KODAK, Ltd. Aug. 20, 1945, No. 21181. Convention date, Aug. 19, 1944. [Class 40 (iii)] [Also in Group XX] A densitometer comprises two independently adjustable density wedges and an illuminating device passing a light beam through a sensitometric strip or photograph and through said wedges, one of the wedges being associated with a scale indicating the density of selected steps of the strip or selected areas of the photograph and the other wedge being associated with a scale indicating the difference in density between any two of said selected steps or areas, preferably in terms of gamma. As shown in Fig. 5, a sensitometric strip 25 is placed over an aperture 14 in a housing (not shown) which carries therewithin two density wedges 22, 27 and a lamp 12. The latter is surrounded by a shutter 35, apertured at 36, which is rotatable to direct the light from the lamp alternately along a path through the wedges and strip and along an indirect path 19; these light paths intersect at a semi-reflector 15, above which is disposed a photo-electric cell 37 connected with a power supply 39 and a meter 44. Thus, the cell 37 alternately receives light which has passed through the wedges and strip and light which has followed the path 19. In operation, the strip is first removed and with the densest part of each wedge in the direct light beam the intensities of the beams are adjusted until photometric balance, indicated by zero reading on the meter, is attained. One step of the strip is then placed over the apertures and wedge 22 rotated until a zero reading is again obtained. Another step of the strip 25 is now placed over the aperture and the wedge 27 is rotated until the reading on the meter is again zero. Wedge 27 has a scale indicating gamma, the reading on this scale after adjustment of the wedge thereby giving the gamma of the strip 25. In another embodiment, the photoelectric cell and meter are not employed, photometric balances being judged by an observer of the reflector 15. The Specification as open to inspection under Sect. 91 describes an embodiment wherein light from the lamp follows the direct path only to a photo-electric cell 53, Fig. 5 (Cancelled), coupled with a power supply and a meter 56. This meter has a density scale 57 and a pointer 58, to which is imparted equal movements for equal changes in the density of the selected steps of strip 25. Above scale 57 is arranged a scale 60, indicating gamma, which is movable by a rack and pinion so that its zero mark coincides with the position of the pointer, when the latter has moved to indicate on scale 57 the density of one step of the strip. Thus, when a second step of the strip is positioned in the light path, the reading on the scale 60 corresponding to the new position of the pointer gives the gamma for the strip. This subjectmatter does not appear in the Specification as accepted.
Patent GB-982461-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02M1/00
Filed: 1962-06-04
Abstract: 982,461. Heating charge. J. R. CHHABRA. Aug. 16, 1963 [June 4, 1962], No. 21379/62. Heading FIB. A tubular mixing screen 1 is disposed so that the mixture enters an open end thereof, the screen being movable axially for varying the area of perforated material through which the mixture passes when leaving the interior of the screen. The screen is provided with guide rods facilitating its sliding in the induction pipe 3 and is connected by a wire 17 to a segment 15 on the throttle valve 6 so that it is raised as the throttle valve is opened. The mesh size of the screen increases in the direction of mixture flow. The fuel supply to the carburetter 11 may be heated in a heat exchanger 21 utilising engine coolant or exhaust gases. The intake air may also be heated. A conical member 19 of wire mesh traps liquid fuel droplets and vaporizes them.
Patent GB-900784-A (GB)
Title: Improved apparatus for sorting stones and other matter from potatoes, or other crops or vegetables
IPC: B07B13/00
Filed: 1959-06-23
Abstract: 900,784. Separating solid materials. BRICE, A. Sept. 19, 1960 [June 23, 1959; Jan. 2, 1960 Nos. 21431/59 and 168/60. Class 117. Apparatus for separating stones &c. from potatoes or other crops includes a rotary drum 1 having a yieldable surface on to which the stones &c. and potatoes are discharged from a conveyer 3, whereby due to the different degrees of frictional contact &c. the stones &c. are directed in one direction and the potatoes pass in another direction to a receptacle 19. A number of adjacent depending rods 5 pivoted at their upper ends are yieldable and direct the feed on to the drum. Some of the rods have tension springs 7 between their upper ends and an adjustable anchorage 9 so as to impart an impulse to the feed particularly the potatoes as it falls towards the drum. In a modification, the deflector rods are inclined to provide an increased potato directing action. The drum surface may consist of rubber or synthetic plastic with a cushion 12 of foam rubber etc.; the surface may be fluted or corrugated annularly or helically to provide ribs 13. The latter may be smooth and the grooves therebetween rougher. A pad 15 bears against the underside of the drum and keeps the drum surface clean and may also moisten it. Instead of the conveyer 3 the feed may be delivered by a hopper or shoot; instead of a drum, the feed may be delivered to an endless belt passing around upper and lower rollers so as to present an upper cylindrical yielding surface.
Patent GB-1460507-A (GB)
Title: Substituted benzofuranyl esters
IPC: C07D307/94
Filed: 1974-05-15
Abstract: 1460507 Substituted benzofuranyl esters BASFAG 15 May 1974 [16 May 1973] 21503/74 Heading C2C Novel benzofuran derivatives of the formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> denote hydrogen or alkyl; or R<SP>1</SP> + R<SP>2</SP> or R<SP>2</SP> + R<SP>3</SP> denote an alkylene chain; R<SP>4</SP> is hydroxy, optionally substituted aryloxy, an optionally substituted aliphatic or araliphatic hydrocarbon radical attached through an oxygen or sulphur atom, -NR<SP>10</SP>R<SP>11</SP> or -OCOR<SP>12</SP>, wherein R<SP>10</SP> and R<SP>11</SP> denote optionally substituted alkyl or R<SP>10</SP> + R<SP>11</SP> + N denotes an optionally substituted heterocyclic ring, and R<SP>12</SP> is an optionally substituted hydrocarbon radical attached directly or via an oxygen atom or an imino or alkylimino group; R<SP>5</SP> and R<SP>6</SP> denote hydrogen or substituted alkyl; and R<SP>7</SP>, R<SP>8</SP> and R<SP>9</SP> denote hydrogen, alkyl, halogen, cyano, acetyl or methoxy, are prepared by reacting a 5-hydroxybenzofuran derivative of the formula with an aminosulphonyl halide of the formula R<SP>5</SP>R<SP>6</SP>NSO 2 X The reaction is preferably carried out in the presence of an acid acceptor. The compounds of the invention possess herbicidal properties.