baber/WOPTO huggingface dataset:
Patent GB-1308865-A (GB)
Title: Strip-line y-circulators
IPC: H01P1/387
Filed: 1971-04-19
Abstract: 1308865 Circulators SIEMENS AG 19 April 1971 [23 March 1970] 22188/71 Heading H1W Two strip-line circulators are coupled by a line 8 having a surge impedance which matches the impedance of the ferrite elements 6 of the circulators. The construction is of the "sandwich" or symmetrical type using two outer ground planes. The width b of this line may be equal to the width b<SP>1</SP> of the branch lines 1, 2, 3, 4 of the circulators, in which case the required surge impedance is obtained by using a dielectric material for the line of appropriate value. If this is not obtainable, an adjustment of the width b may be made to obtain the desired result. The branches 1, 2, 3, 4 are matched to the ferrite elements 6 by quarter-wave impedance matching sections in the usual fashion. The matching sections can be realized by arranging dielectric elements (not shown) on either side of the branches next to the ferrite elements 10.
Patent GB-379492-A (GB)
Title: Improvements in or relating to means for facilitating reference to and reading of books and the like
IPC: B42D9/00
Filed: 1931-08-06
Abstract: 379,492. Bookmarkers. THOMSON, H. A., 81c, Lexham Gardens, Kensington, London.. Aug. 6, 1931, No. 22277. [Class 16.] Relates to bookmarkers of the kind described in Specification 323,362, [Class 16, Books &c.], and particularly to means for locking the marker-bars to the supporting frame. The two relatively movable locking-loops 20a, 22a, Fig. 1, may be placed at the same end of the frame, and be engaged by hooks 19a on the marker-bar 20, the other end of the bar being held by an indiarubber band 3. A single locking-loop may have a pivoted part 13, Fig. 2, which can be turned, so as to lock within a recess in the bar. The bar may have at one end a recess 15, Fig. 3, to engage over a flat strip.19, on which the bar is held when turned into the horizontal position. The other end of the bar is locked by a sliding or pivoted loop 21. The fastening ends of the bar are offset from the main portion, so that the bar lies flat on the page. The movable loop may be held in locking position by a spring, which can be prised out of action by means of a key. The frame that supports the markers may consist of two metal bars, which are placed inside the book-covers, and are connected by flexible or other links.
Patent GB-321211-A (GB)
Title: Spring units to be used in the upholstery of chairs, settees and the like, also in the upholstery of vehicle seats
IPC: A47C23/043
Filed: 1928-08-02
Abstract: 321,211. Hrandreth, V. G. Aug. 2, 1928. Spring surfaces. - A chair-seat support comprises a spring unit composed of a somewhat flexible bearer-bar 1, with spiked ends taking into the chair frame, and a central spring 6 carrying flat springs acting to form a large bearing surface for sagging upholstery. Specifications 265,894 and 300,046 are referred to.
Patent GB-840702-A (GB)
Title: Improvements in or relating to depth gauges for drill bits
Inventor: JEWITT JOHN JAMES
IPC: B23B49/00
Filed: 1958-07-12
Abstract: 840,702. Drills. ELLIN (FOOTPRINT WORKS), Ltd., T. R. Feb. 10, 1959 [July 12, 1958], No. 22421/58. Class 83 (3). A depth gauge for woodscrew drill bits, having a flat blade 11 with drilling and countersinking cutting edges thereon as described in Specification 840,701 comprises a sheet-metal clip 1, Fig. 7, having two inwardly facing concave sides 3 for gripping the drill shank jaws 5. for engaging slots 6-8 in the shank, and a slotted portion 9 connected by angular faces 2 to the sides 3. In operation, the gauge is located in one of the slots 6-8 according to the depth of countersink required, and the drill feed is stopped when the face of portion 9 abuts the work. The gauge can be used with a twist drill having grooves in its shank the end portion 9 having a circular hole to allow insertion of the drill.
Patent GB-796728-A (GB)
Title: Ethylene polymerisation process
Inventor: SEED LESLIE
IPC: C08F10/00
Filed: 1955-08-04
Abstract: Solid polyethylene is prepared by subjecting gaseous ethylene to pressures greater than 500 atmospheres and to temperatures above 15 DEG  C. in the presence of a catalyst from the group consisting of esters of hyponitrous acid.  Methyl, ethyl, isobutyl, isopropyl, benzyl and allyl nitrites are mentioned and may be added as a solution in petroleum ether.  Batch or continuous bulk polymerization at between 1000 and 2000 atmospheres may be used, and products prepared in the range 15 DEG  to 50 DEG  C. are denser and stiffer, e.g. from 0.935 to 0.952, than those prepared at from 50 DEG  to 120 DEG  C. which are however produced at a higher rate.  The polymer in the form of a fine white powder, may be purified by extracting with hot xylene, filtering and precipitating with methanol, when it may be moulded to a film.
Patent GB-1156058-A (GB)
Title: Friction Materials.
Inventor: CLARK ERIC
IPC: F16D69/02
Filed: 1967-05-15
Abstract: 1,156,058. Friction material. FERODO Ltd. 6 May, 1968 [15 May, 1967], No. 22463/67. Addition to 1,071,520. Heading C4X. A friction material comprises asbestos or other inorganic fibre and a binder wholly or substantially wholly composed of metallic sulphide formed in situ, the metallic sulphide consisting of iron sulphide formed by reaction of sulphur with iron powder or with lower iron sulphide with or without copper sulphide formed by reaction of sulphur with copper powder or with cupueus sulphide. The term " iron sulphide " includes non-stoichiometric compounds. The material may also include lead, tin, brass, aluminium, barytes, rottenstone-whiting, carbon black, graphite, alumina, silica, metal oxides and anti-oxidants. The inorganic fibre may be asbestos, glass fibre or metal fibre.
Patent GB-228961-A (GB)
Title: Improvements in electrical transmission of images
IPC: H01J40/00
Filed: 1923-09-07
Abstract: 228,961. Western Electric Co., Ltd., (Western Electric Co., Inc.). Sept. 7, 1923. Television apparatus.-In a system of television, light from the object whose image is to be transmitted is reflected by a mirror which is caused to scan the object in a spiral continuous path. The reflected light is caused to produce electrical current variations which are utilized for the reproduction of the image at the receiving stations. Two series of electrical oscillations, the one proportional at a given instant to the intensity of light at a point on the object and the other to the position of the point on the object, are produced by the action of light reflected from the mirror 15 and are transmitted on a carrier wave to the receiving station, where they are separated, the former being utilized to control the potential of the grid of a Braun tube and thus to control the passage of a cathode ray stream which illuminates a screen. This ray stream is moved over the screen, synchronously with the scanning of the object, by the combined effect of electromagnetic or electrostatic action produced bv the two series of oscillations, to reproduce the image. Fig. 1 illustrates diagrammatically the apparatus for producing the two series of oscillations, Fig. 2, showing the relative positions of image, mirror and photo-electric cells. Light is reflected by the mirror 15, as it scans the image 16, on to a lens 21 which distributes it on ,the cathode, of a selenium cell 17. Oscillatory currents proportional to the variation in the intensity of light over the scanning path are thus produced in the circuit of the cell 17 and are amplified by amplifiers 23, 29 and modulate, through a modulator 35, a carrier wave generated by a generator 38. A disc 325 whose transparency increases from the centre outwards is interposed between the object 16 and the mirror 15 to compensate for the variation in linear speed of scanning the object by the mirror. The carrier wave is further modulated by oscillations proportional to the position of the points on the object and produced by light from a constant, source 45 reflected by the mirror 15 through a lens 52 on to the cathode 50 of a photo-electric cell 51. Current passing from the cathode 50 to one or both of the anodes 53, 54 is dependent, owing to the presence of an auxiliary electrode 56 carrying a fixed charge, on the radial distance at which the incident ray strikes the cathode and this will be a function of the position of the point on the object being scanned bv the mirror. The object may if necessary be illuminated by steady light or by intermittent light of high frequency. Specification 230,401 is referred to.
Patent GB-876728-A (GB)
Title: Face type sealing device
Inventor: KOSATKA THOMAS OTTO
IPC: F16J15/36
Filed: 1959-07-01
Abstract: 876,728. Stuffing-box substitutes. VICTOR MANUFACTURING & GASKET CO. July 1, 1959, No. 22643/59. Class 122 (5). A face-type sealing device for use between relatively rotatable machine parts comprises channel-section metallic front and rear annular members 9 and 3 urged apart by springs 16 and held against separation and relative rotation by interengaging means on the members and a rubber &c. bellows 36 secured to the front member, extending outside both members and engaging the rear face of the rear member. Flange segments 12 on the member 9 engage slots 5 in the member 3 and prevent axial separation of the members by contacting projections 19 on the member 3. The springs engage sockets in a washer 14 in, and preferably welded to, the member 3 and bosses 18 on a washer 17 in the member 9. The seal ring 40, which may be of cork, is secured to a mounting ring 34 fixed to a locating ring 32 and the bellows is bonded to the outer peripheral faces of the mounting and locating rings, the latter ring being a press fit in the front member 9. Sealing ribs 39 are provided on the rear face of the bellows. In use the device is non-rotatably secured to one of the parts by pins 8 on the member 3 that extend through holes in the bellows and engage sockets in that part and the seal ring 40 is urged by the springs 16 into rubbing sealing contact with the other part.
Patent GB-327652-A (GB)
Title: Improvements in pivoted windows
IPC: E06B3/48
Filed: 1929-07-23
Abstract: 327,652. Krausz, A. Feb. 9, 1929, [Convention date]. Fanlights and hopper windows.-In a pivoted window comprising upper and lower sashes 1, 2 hinged together at 5, the bar 6 of the lower sash is guided at 7 in a slot in the frame 9 and the upper sash is pivoted at points 10 lying between the upper and lower bars 3, 11, The bar 11 may thus serve as a counterbalance while the window is being opened to the dotted position in Fig. 2.
Patent GB-808860-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B37/04
Filed: 1956-07-23
Abstract: 808,860. Sewing machines. PFAFF, A.G., G. M. July 23, 1956 [Aug. 9, 1955], No. 22662/56. Class 112 A reciprocating cutter bar 13, which carries a cutter 14 adapted for trimming the work along the line of feed, is biased to the raised and inoperative position by a spring 16, and a control member, such as a treadle, knee press or magnet, is connected to an operating rod 56, the arrangement being such that alternate operation of the control means in the same direction serves respectively to connect the cutter bar to a drive, and to disconnect the cutter bar therefrom. An oscillating shaft 22, driven by connections 19, 20 from the arm shaft of the machine, carries a crank 23 provided with a sleeve 24 in which is slidably mounted a pin 25. The latter is spring biased towards the front edge 28 of the cutter bar, and is thereby adapted, when the cutter bar is depressed, to enter a notch 26 in edge 28 for establishing a driving connection with the cutter bar. Bush 24 is embraced by the forked lower end 44 of a lever 42 which is pivoted at 43 and is normally maintained in a neutral position by a spring 47. A plunger 35, slidably mounted in the upper end of the cutter bar, is biased by a spring 37 to carry a pin 38, projecting transversely from the plunger, to the closed end of a slot 39 in the upper edge of the cutter bar. The plunger is located opposite the upper end 46 of lever 42 when the cutter bar is in the inoperative position. One arm 51 of a control lever, pivoted at 49, has connected thereto a rod 52 biased downwardly by a spring 53. One arm of a lever 55 underlies the end of rod 52 and the other arm is connected to the operating rod 56. The other arm 57 of the control lever has a cranked end 58 which is disposed transversely across the top of the cutter bar and in front of the projecting pin 38 when the cutter bar is raised. Operation of the control member serves to draw rod 56 downwardly and thereby to rock the control lever in the clockwise direction, Fig. 1, whereby end 58 moves downwardly and reacts with the upper edge of the cutter bar to depress the latter to the operative position. End 58 simultaneously reacts with pin 38 for moving plunger 35 outwardly into engagement with the end 46 of lever 42, whereby the latter turns anticlockwise, Fig. 2, till plunger 35 rides off end 46, when the latter is moved by spring 47 into engagement with an angle member 60 provided on end 58. After operation of the control member ceases, end 58 returns to its original position above end 45. The cutter bar continues to operate till the control member is again operated, when end 58 moves downwardly to carry member 60 into engagement with the upper edge of end 46 to turn lever 42 in the clockwise direction, Fig. 2, whereby the forked lower end 44 of lever 42 engages a nut 27 on pin 25 to withdraw the latter from notch 26, and spring 16 then raises the cutter bar to the inoperative position.
Patent GB-212218-A (GB)
Title: Improvements in and relating to automatic draft regulators for boiler furnaces
IPC: F23N3/04
Filed: 1923-09-10
Abstract: 212,218. American Radiator Co., (Assignees of Mertzanoff, A. M.). Feb. 27, 1923, [Convention date]. Air supply, regulating.-The supply of air through a passage 19 to the ash-pit of a sectional boiler furnace is regulated by a damper 33 controlled by variations of temperature or pressure in the boiler, and the damper is adapted to be closed independently by a counterweighted hand-lever 36 mounted on a shaft 34 provided with an arm 38 to engage the lever 31. A metallic collapsable bellows 23 is arranged within an aperture 22 formed in the rear section 12 of the boiler and secured in position by a plate 24. Increase of pressure in the boiler causes the bellows to collapse against the action of a spring 30 and through the spindle 27 actuate the lever 31 and damper 33 to close the passage 19. A decrease of pressure in the boiler allows the spring 30 to extend the bellows and actuate the lever 31 to open the damper. A small aperture in the damper allows air to pass to the ash-pit at all times.
Patent GB-1035870-A (GB)
Title: Memory system
IPC: G11C/
Filed: 1965-05-28
Abstract: 1,035,870. Matrix stores. NATIONAL CASH REGISTER CO. May 28, 1965 [June 10, 1964], No. 22728/65. Heading G4C. In a matrix memory each word line stores a plurality of words and in operation a complete line is read out, a selected word therefrom being transmitted to an output and replaced or restored in the memory. The memory described comprises eight 3-dimonsional matrix modules M1-M8 arranged as in Fig. 3 (not shown), each module having 16 x 40 65-bit word lines, each word line storing five 13-bit words. The matrix modules are each formed of a 16 x 65 conductive rods coated with a thin film of magnetic material. In operation, a word line is selected for reading by selecting the required row by a row addressing circuit 23 (Fig. 4, not shown) and the required column by a column addressing circuit 24, the entire row being read out to pulse stretchers such as 64 (Fig. 5, not shown). The outputs of the pulse stretchers are applied to gates (Fig. 6, not shown) conditioned by one only of five signals L1-L5 corresponding to the required one of the five stored words in the selected line. The outputs of the pulse stretchers are also applied to logic circuits 66, Fig. 5, which effect the restoration of the non-selected words in a restore cycle immediately following the read cycle. The selected word is itself either restored or replaced by a new word according as signals RR or CW are applied to the circuits 66.
Patent GB-359940-A (GB)
Title: A handle or holder for tins of polish or the like
IPC: B65D25/28
Filed: 1930-07-28
Abstract: 359,940. Holding-tools. MARTIN, N., Ripley, Embankment, Putney, London. July 28, 1930, No. 22736. [Class 61 (ii).] A tin of polish &c. is mounted for use on a handle or holder by means of a cup or pad of plastic rubber or other compound, or by a magnetic or other clip, indiarubber band, or other means. According to the Provisional Specification the attachment means, which may be a " vacuum " cup, is enclosed in a case the lid of which carries a conditioning pad. Reference has been directed by the Comptroller to Specifications 15499/05, [Class 61, Hand tools &c.], 163,187, and 243,764, [both in Class 18, Boxes &c.].
Patent GB-364001-A (GB)
Title: Improvements in domestic kitchen cabinets or the like articles of furniture
IPC: A47B77/04
Filed: 1930-07-29
Abstract: 364,001. Cabinets &c. SAVEWORK (LIVERPOOL), Ltd. and COOKLIN, L., Domestic Works, Derby Lane, Liverpool. July 29, 1930, No. 22756. [Class 52 (i).] Cabinets and like articles are made from plywood sheets without the use of framing members by rebating the intersecting walls and shelves together, the grooves being formed at a distance from the edges of the sheets. Dovetailed joints may be used, as in Fig. 3, in which case the tongues 6 are tapered only to the depth of half a ply on each side.
Patent GB-755900-A (GB)
Title: Improvements in or relating to photometric apparatus
Inventor: POWELL EDWARD OWEN
IPC: G01N21/51
Filed: 1953-08-18
Abstract: 755,900. Photo-electric measuring apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 18, 1954 [Aug. 18, 1953], No. 22788/53. Class 40 (3). In apparatus for determining the concentration of suspensions of particles in a liquid medium a photo-electric comparison is made of the light transmitted by the suspension and that scattered in a forward direction by the suspension. As shown, light from a source 1 having a straight helical filament passes to photo-electric cells 2, 3. The path to cell 2 includes a compound plano-convex lens 9, having a filter 18, rotatable optical wedge 13, rectangular slit 12, compound plano-convex lens 10, including between the two components a cell containing the sample under test, and a slide 14 having an opaque rectangular stop 16 and a rectangular aperture 17. The slide may be so positioned as to allow either the transmitted or scattered light to reach cell 2. In the position shown, scattered light only is collected by lens 15 and passes through a variable compensating stop 20 to cell 2. Cell 3, with filter 4, diffusing screen 5 and iris diaphragm 6, and an optical wedge comprising thumb-screw 7 constitutes an optical comparison arrangement. In use, the slide 14 is positioned so that opaque stop 16 is aligned with the optical axis of the system and the light from slit 12 is focused on to opaque stop 16 by lens 10. Initially wedge 13 is set at its position of minimum density and iris diaphragm 6 adjusted until the outputs of the two photocells, as determined by a null circuit comprising a microammeter, are equal. Slide 14 is then shifted so as to align aperture 17 with the optical path. Wedge 13 is then re-adjusted and its position at balance indicates the ratio between the transmitted and scattered light. To compensate for the effect of stray light a shunt light path (Fig. 3) comprising mirrors 21, 22 is provided, it being stated that if the amount of light reaching slit 12 is adjusted to p (1 -p) times the scattered light, where p is a fraction representing the amount of stray scattered light, the relationship between the wedge reaching and the concentra.- tion of the sample is restored. In the simplified arrangement of Fig. 3 (not shown), cell 3 is omitted while a pair of cells are provided in place of cell 2. One receives only scattered light while a mirror placed in the centre of the light leaving the specimen reflects transmitted light to a second cell. An optical wedge is included in the light path to this second cell. Thus the comparison of transmitted and scattered light is made directly.
Patent GB-700137-A (GB)
Title: Improvements in or relating to the reduction in viscosity of heavy hydrocarbon residues
IPC: C10G9/00
Filed: 1951-10-01
Abstract: <PICT:0700137/III/1> Heavy hydrocarbon residues are heated in a vis-breaking zone to 780 DEG -950 DEG  F. at 100-1,500 p.s.i.g., the product is passed to a separating zone maintained at a temperature and pressure below that of the vis-breaking zone, and the separated tar is maintained in a collecting zone at 450 DEG -650 DEG  F. and 50-300 p.s.i.g. for 20-300 seconds.  Virgin crude distillation residuum or desalted residue are fed through a preheating and vis-breaking coil in a furnace 9.  The product after being quenched by product tar in line 11 to 500 DEG -800 DEG F. is flashed via valve 14 into a tower 15 where it is stripped by steam fed via lines 17. Heavy tar falls into the tar pot 21 from which (1) part is withdrawn via line 23 under control of a level control 27, (2) part is circulated from the bottom to the middle of the tar pot via a cooler 33, and (3) part is passed to line 11 to serve as quenching medium.
Patent GB-1305409-A (GB)
IPC: G03C1/015
Filed: 1970-05-12
Abstract: 1305409 Production of photographic silver halide-gelatine emulsions GAF CORP 12 May 1970 [29 May 1969] 22873/70 Heading G2C A process for washing photographic silver halide-gelatine emulsions, comprises separating a silver halide-gelatine complex from an aqueous water soluble salt solution containing gelatine in which the silver halide is formed by reaction of a water-soluble silver salt with a water-soluble halide, reslurrying the thus recovered silver halide-gelatine complex with at least an equal amount of water containing 4 to 6%, based on the weight of gelatine, of an organic coagulating agent which is polystyrene sulphonate or dodecyl sulphate, and recovering the silver halide-gelatine complex by centrifuging the resulting slurry. The water-soluble salt solution may have a sufficient concentration of electrolyte therein to provide a conductivity of at least 100, 000 micro Mhos cm<SP>-1</SP> at 40‹C. The initial separation of silver halide-gelatine complex may be effected by centrifuging. If the water soluble salt solution contains insufficient electrolyte to permit separation of the complex by centrifuging 2-4% of polystyrene sulphonate or dodecyl sulphate based on the weight of gelatine in the complex may be added to the solution. The silver halide gelatine emulsions are washed according to this invention with reduced amounts of coagulant and water. The emulsions produced are sufficiently free of water-soluble electrolyte for reconstitution, ripening and coating. Reference has been directed by the Comproller to Specification 884840.