baber/WOPTO huggingface dataset:
Patent GB-767703-A (GB)
Title: Improvements in direct positive photographic processes
IPC: G03C1/485
Filed: 1954-08-03
Abstract: 767,703. Direct positive photographic images. KODAK, Ltd. Aug. 3, 1954 [Aug. 3, 1953], No. 22509/54. Drawings to Specification. Class 98(2) A direct positive photographic image is produced by developing an exposed silver halide emulsion layer of the "internal" latent image type as defined in Specification 645,877 in the presence of a hydrazine compound of the general formula H 2 N.NHD-(CH 2 )n-NHSO 2 R (wherein D is a divalent mononuclear arylene group of the benzene series, n is 0 or 1 to 4, and R is an alkyl group) in a developing solution containing one of the compounds 3-methyl- 2-#-phenethyl-isoquinolinium bromide, 2- benzyl-3-methyl-isoquinolinium bromide, 1- #-phenethyl-#-picolinium bromide, 1-#- phenethyl-quinolinium bromide, and 1-#- phenethyl-lepidinium bromide. The following compounds are not effective in accelerating development :-2-methylbenzselenazole methiodide 3-methyl benztriazolium p - toluenesulphonate, 2 : 3 - dimethyl-6-aminobenzthiazole perchlorate, 1- benzyl-a-, -#- and-γ-picolinium bromide, 1- # phenethyl-γ-picolinium bromide, 1-#- phenethyl-quinaldinium bromide, ethylenebis-(pyridinium perchlorate), #-phenethyla - picolinium bromide, p-tert. - butyl - phenoxyethoxyethyl - pyridinium per chlorate, and N:N<SP>1</SP> - ethylenedioxymethylpyridinium perchlorate. The hydrazine compound may be incorporated in the developing solution or in the emulsion, a number of such compounds being specified. The developing agent may be N- methyl - p - aminophenol sulphate, hydroquinone, catechol. 2-methylhydroquinone,; 2 - chlorohydroquinone, p - aminophenol, pyrogallol, or a 3-pyrazolidone developing agent, a number of which are specified. A mixture of hydroquinone with N-methyl-p-, aminophenol or a 3-pyrazolidone may be used. In Example 1, an emulsion made as described in Example 1 of Specification 635,841 is exposed and developed in a solution of N-methyl-p-aminophenol sulphate, hydroquinpne, p -(#-methylsulphonamidoethyl) - phenylhydrazine hydrochloride, sodium sulphite, trisodium phosphate, diglycolic acid, 5-methylbenztriazole, sodium hydroxide, and 3-methyl-2-#-phenethylisoquinolinium bromide. Similar, developer compositions are used in Examples 2 to 5, Examples 2,4, and 5 using as developing agents a mixture of hydroquinone and 1- phenyl - 3 - pyrazolidone, 1 - phenyl - 4 : 4- dimethyl - 3 - pyrazolidone, and 1 - (4<SP>1</SP> - # - hydroxyethylphenyl) - 3 - pyrazolidone respectively. Specifications 542,502, 581,772, 581,773, 702,162, 702,163, 712,355, 712,356, 757,271 and 767,705 [Group IV(b)] also are referred to.
Patent GB-1475039-A (GB)
Title: Rotary internal combustion engine
IPC: H01T13/08
Filed: 1975-05-23
Abstract: 1475039 Rotary positive-displacement fluidmachines FORD MOTOR CO Ltd 23 May 1975 [6 June 1974] 22609/75 Heading F1F To improve the performance of a single or multiple rotor Wankel I.C. engine at least one sparkplug 22 is lodged in each of the side walls 29, 30 of the or each rotor chamber instead of the circumferential wall thereof. The plugs may be orientated obliquely relative to the inner surfaces 28, 31 of the side walls. Generally T-shaped pockets 50, Fig. 2, may be formed in the peripheral faces  of the or each rotor to facilitate propagation of the flame fronts from the plugs. Alternatively, each of the aforesaid faces has chambers 156, 157 inter-connected by a depression 153, Figs. 16 and 18. To promote rapid lateral shifting of radial sealing pieces 18 in response to pressure variations in the adjacent working chambers each piece may have a groove 36 in each side communicating with said chambers through passages 35, 37 in said side and the adjacent wall of the slot accommodating the piece in the rotor. Leakage between the surfaces 28, 31 and each piece 18 is reduced by  another piece 33 permitting variations in the distance between said surfaces. Oil is spread over the surfaces 28, 31 by corner seals with recesses 42,  44 and passages 41, 45 through which oil can pass from the interior of the rotor.
Patent GB-1013043-A (GB)
Title: Improved electrical conductors for high frequency currents
IPC: H01P3/00
Filed: 1962-06-25
Abstract: 1,013,043. Conductors. A. E. NEWMAN. June 25, 1962, No. 22675/62. Heading H1A. An increase in the effective resistance of a conductor at high frequencies due to the " skin effect " may also be accompanied by a still further increase in high frequency resistance due to magnetic coupling between adjacent strands of a conductor or adjacent turns of a coil. This " proximity effect " may be overcome by coating the conductor or its individual strands with a magnetic material, e.g., particles of iron, iron oxide, permalloy, ferrites or natural magnetite in a varnish or resin binder, to form only a partially effective magnetic shield. The point of optimum reluctance of the conductor between totally effective magnetic shielding and no shielding may be obtained by coating individual strands of the conductor forming them into bunches and giving a further coat, and continuing this procedure until a single coated conductor is obtained. The permeability of the magnetic material may be controlled by passing a current through the conductor or its strands during the coating process to orientate the particles, and polymerization of the resin coating may be effected either by passing the conductor through an oven or by passing a current through the conductor.
Patent GB-1040435-A (GB)
Title: Improvements in bobbins such as are used particularly in electrical measuring instruments
Inventor: DUKE KENNETH STANLEY
IPC: G01R11/04
Filed: 1963-06-07
Abstract: 1,040,435. Bobbins. WALSALL ELECTRICAL CO. Ltd. May 26, 1964 [June 7, 1963], No. 22711/63. Heading B8M. [Also in Division G1] A double-flanged bobbin integrally formed from a synthetic resinous material-for example nylon-has one or more undercut slots formed in at least one of the flanges to non-rotatably retain the head or heads of one or more T-bolts.
Patent GB-239873-A (GB)
Title: Improvements in or relating to frequency transformers
IPC: H03B19/03
Filed: 1925-09-11
Abstract: 239,873. Telefunken Ges. f³r Drahtlose Telegraphie. Sept. 12, 1924, [Convention date]. Addition to 238,559, [Class 38 (ii), Electric currents, Converting &c.]. Modulating systems and apparatus.-Relates to frequency-changing transformers in which the winding comprises a, conductor surrounded by a thin layer of ferro-magnetic material as described in the parent Specification, and consists in controlling the temperature of the transformer so as to regulate the output. The transformer may be worked at a relatively high temperature, viz., a temperature approaching the critical point of the iron, and, where sufficient heat is developed in the transformer by the high frequency currents, the transformer is merely protected from external influences by enclosing it in an evacuated container or one containing an inert gas. Fig. 1 shows such an arrangement, the winding a being supported on heat resisting rings b and enclosed in a glass, quartz, or like container c. Where insufficient heat is developed by the high frequency currents, the transformer is heated by hot gases, by electrically heated elements, or by passing low frequency or direct current directly into the transformer windings. Fig. 3 shows an arrangement in which the transformer a having high frequency leads k1, k2, brought out from the container c is supplied at equipotential points l1, l2 with a heating current controlled by means of a key. In a further arrangement, Fig. 4, the heating current is obtained from an alternating source through a rectifier g and is controlled by the exciting circuit of the rectifier the current in which is varied by the device s which may be a telephone or key for signalling purposes.
Patent GB-205276-A (GB)
Title: Improvements in suspenders for stockings
IPC: A41F11/02
Filed: 1922-08-22
Abstract: 205,276. Taylors, Ltd., A. S., and Robson, M. Aug. 22,1922. Stocking suspenders.- A stocking suspender for ladies' wear comprises a length of webbing A adjustable by a buckle C and carrying at one end a clip B for attachment to the corset &c. and at the other end a fitting D having a spring tip d<1> and a pulley d. The stocking grip E of cord runs freely over the pulley d and has at each end a button - hole c and a button g attached to the cord E by a flexible cord or tabs G. The cords G may be attached to the cord E by metal clips e<1>, or by stitching, or may be, formed as extensions of the cord E. In a modification, the fitting D is formed as a loop of leather &c. closed by a press-button.
Patent GB-866567-A (GB)
Title: Improvements relating to syphons for flushing cisterns
IPC: E03D1/08
Filed: 1956-07-24
Abstract: 866,567. Siphon-discharged flushing cisterns. LAWLEY Ltd., W. & J., and GAUNT, H. J. July 24, 1957 [July 24, 1956], No. 22809/56. Class 26. In a siphon S for a flushing cistern a cylinder 5, communicating with an up leg 9 has a plunger 6 to displace liquid into the leg 9, in which a down leg 10 is spacedly arranged, and having an opening 17 embracing the exterior of the lug 10 with a leakproof joint at least on the siphoning stroke of the plunger, the lower end of the leg 10 having a screw threaded portion 21 projecting below the cylinder engaging a threaded part of a flanged extension delivery tube 25 with lugs 24 matching lugs on the cylinder base 22, clamped together by screws 26. The leg 9 may be circular, or approximately oval or oblong in cross section. The cylinder 5 and the legs 9 and 10 may be of thermoplastic, and the head of the up leg may be closed by a cap of like material. The opening 17 virtually surrounds the leg 10, fitted in a leakproof manner by a suitably bored flexible diaphragm 8 on the plunger 6 with openings 7, a rod 11 extending from it through a sleeve 13 in a cylinder wall 14 and carrying an elastic sleeve 16 serving as a resilient buffer for the plunger 6 on raising the rod 11.
Patent GB-633021-A (GB)
Title: Improvements in gland packing rings
IPC: F16J15/20
Filed: 1947-08-18
Abstract: 633,021. Stuffing-box packing. SPENCER MOULTON & CO., Ltd., G. (Palmer, B. W.). Aug. 18, 1947, No. 22860. [Class 122(v)] In a flanged gland packing ring surrounding a rod and made of resilient rubber the wearing portion of its throat is formed of hard graphited rubber compound to resist abrasive wear. The whole of the throat formed on the inner cylindrical wall or a thickness of 0.02 inch of the wearing surface is formed of the graphited rubber mix. The packing ring is manufactured from a ring cut from an extruded tube of graphited rubber mix stretched on a mandrel and a sheet of resilient rubber mix wrapped on it prior to shaping and vulcanization.
Patent GB-1600836-A (GB)
Title: Continuous business forms assemblies
IPC: B42D5/02
Filed: 1978-05-26
Abstract: The form arrangement consists of multi-layer sets of forms, connected one behind the other, which can be advanced through the printer of an office machine. Two outer, endless layers (11, 12) are separably connected to each other at the longitudinal edges and have tractor feed perforations (13) and, for separation, transverse lines (36) of weakness. In between the latter lie intermediate layers (21, 22, 23, 24, 28) which are connected to form individual sections. The sections are connected, only along one longitudinal side of the form arrangement, to each other and to only one of the outer layers, in a separable manner. The printed sets of forms are each completely separated at the transverse lines of weakness. With this arrangement, however, only the section and one outer layer (11) of the last printed set of forms can be separated easily, whereas the other outer layer (12) can be left as a drive web for initiating the advance of the subsequent sets of forms to be printed. As a result, the whole set of forms is not wasted for this purpose. <IMAGE>
Patent GB-1200295-A (GB)
Title: Improvements in sectional furniture
Inventor: O'FARRELL FERGUS
IPC: A47B57/34
Filed: 1966-05-23
Abstract: 1,200,295. Shelving. F. O'FARRELL. 23 Aug., 1967 [23 May, 1966], No. 22911/66. Heading A4B. A dismantleable shelving structure comprises laterally spaced upright frames each comprising two U-section uprights 1 interconnected by upper and lower crossmembers 2, a plurality of slots 4 in the inwardly facing flanges of the uprights 1, a flat-topped bridge 5 extending between the uprights 1 with its ends engaged in opposed slots 4, and a shelf 7 supported at its ends, without projecting between the uprights 1, on bridges 5 fitted in the spaced frames. The shelf 7 may be supported on, and optionally screwed to, the top of the strip 5. Alternatively, the bridge 5 may engage a groove 8 in the shelf end. The underside of the bridge 5 has a pair of longitudinal ribs 6 which are a snug fit between the flanges of the upright 1.
Patent GB-1045563-A (GB)
Title: Apparatus for controlling a beam of electromagnetic radiation
IPC: G02B5/18
Filed: 1964-06-04
Abstract: 1,045,563. Modulating light. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 4, 1964 [June 28, 1963], No. 23117/64. Heading H4F. Apparatus for controlling the intensity, and more particularly the point of focus f, Fig. 3, of a beam 14 of plane polarized monochromatic light comprises a plate 50 of muoldable stressoptic material having mounted in its centre a piezo-electric transducer 52 to which is applied oscillatory electrical signals so that standing wave vibrations are set up in plate 50, Figs. 4a and 4b (not shown), the pattern of the standing waves being such that those parts of the beam which pass through areas of the plate subject to substantial periodic variations of mechanical stress interfere constructively to produce an increased intensity of light incident at point f. At the peaks of the standing wave the state of polarization of light passing through the plate is changed, and the shape of the plate is such that the areas defined by these peaks define Fresnel zones so that Fresnel focusing occurs because the emerging light has components which are not polarized in the same plane as the incident light. An analyzer 16 is so orientated as to pass radiation of the polarity induced by the stress-optic material when under stress but excludes radiation of any other polarization. Adjusting the frequency of oscillations and thus the locations of standing waves creates a different Fresnel pattern and thus causes focusing at a different point and this can be used to detect whether or not the frequency of the oscillations, from an oscillator such as a timing oscillator (or clock) in a data processing system is too high or low by having a number of photodiodes positioned at different places along the axis of the system (Fig. 1, not shown), i.e. at different points of focus corresponding to different frequencies. In order to obtain a standing wave which defines Fresnel zones, plate 50 is in the form of a bi-concave lens the two faces of which define parabolas, and the simple lens action of plate 50 is cancelled by convex lens 18. The mouldable stress-optic material may be " Plexiglass " (Trade Mark), or any plastics material which is stress-optic. The plate may be annealed before the lens is finally constructed, or heated at its centre during focusing, so as to cause the velocity of propagation of the stress wave to be different across the material in accordance to the desired Fresnel standing wave pattern.
Patent GB-831233-A (GB)
Title: Improvements in electrical sound reproducing apparatus
Inventor: HEWARD JOHN STANLEY
IPC: H03F1/54
Filed: 1957-07-22
Abstract: 831,233. Automatic regulation. FERGUSON RADIO CORPORATION Ltd. July 22, 1958 [July 22, 1957], No. 23188/57. Drawings to Specification. Class 38 (4). [Also in Group XL (c)] In electric sound reproducing apparatus comprising an electric motor for driving a sound record and an amplifier and loud-speaker for reproducing the sound, the heaters of the amplifier are connected in series with the whole or part of a motor winding to provide the desired heater current, and a non-linear resistor is connected effectively across the heaters to enable the circuit to be operated from supplies of different voltage without exceeding the heater voltage rating. The heaters may be connected to a tap on the winding and the non-linear resistor to the same or to a different tap.
Patent GB-705168-A (GB)
Title: Improvements relating to servo-mechanisms
Inventor: REY THOMAS JULIUS
IPC: G05B19/35
Filed: 1950-09-22
Abstract: 705,168. Electric anologue calculating systems. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 5, 1951 [Sept. 22, 1950], No. 23245/50. Class 37  [Also in Group XXXVIII] A servo mechanism for following an input variable comprises a servomotor for setting up an output variable representative of the input variable, and a device for predicting the prospective error between the representative servomotor output and the predicted value of the input variable at a future time, in the form of an error signal which controls the servomotor operation to reduce the actual error prevailing at the future time between the input and the output signals. In Fig. 1 a servo-system comprises an amplifier 2 whose output energizes a motor 1 driving an output shaft 5 and a tachometer generator 4 from which a velocity signal is fed back to the amplifier input through a network 3 adding integrals and derivatives of the feedback signal as required so that the motor velocity is proportional to the input signal. The output shaft drives a device 10, e.g. a potentiometer, producing a voltage analogue of the servomotor displacement output # o , which is encoded at discrete instants in a binary digital pulse code by an encoder 6, e.g. of electronic form. The controlling input variable # 1  is sampled at discrete intervals of time T by a digital computer 7 which receives the coded output signal, predicts the value of # 1  at a future time +T measured from each instant of sampling, and computes the prospective error # 1  at time + T as a binary digital pulse coded signal which is fed to a decoder 8 e.g. of electronic form, whose output represents the prospective error in analogue form, and is connected to an error  summing and holding network 9 (e.g. a simple integrating condenssr) having a long time constant compared with . T, whose output energizes the servomotor amplifier together with the tachometer feedback signal. It is shown that if #O 10  is the servomotor output at present time O. #o,o-T is the servomotor output at past time-T # 1,T  is the predicted signal to the computer at a future time T derived from preceding input regulations S the prospective error signal # I  is given by # r =  (# 1, T-2#o,o + #o,-T) and is such that the output #o is maintained equal to # I,T  at the future time T, as required. The computer 7 may be in the form of an analogue computer, thus eliminating the coder and decoder.
Patent GB-232981-A (GB)
Abstract: 232,981. Standard Gas Equipment Corporation, (Assignees of O'Dowd, H. W.). April 24, 1924, [Convention date]. Gas cooking- stoves; hot-plates.- An atmospheric gas burner, having outlet nozzles A<1>, is provided with a flanged coverplate B having utensil supports A<10>, and spaced from, and supported by, the burner and provided with tapered nozzles B<4>, through which the flame jets project. In one form, the cover-plate B is provided with recesses B<2> in the flange B<1> for angaging lugs A<7> on the burner and is held in position by a pin A<8> passed through a perforated lug extending upwardly from the burner through a slot B<3>. In a modification, the flange B<1> extends to the level of the underside of the burner-head and is provided with lips engaging recessed supporting lugs on the burner head. A number of burners may be supported on a bar 34 in a gas range of the type described in Specification 169,956. The coverplate may be made integral with the burner. Specification 189,570 is referred to.
Patent GB-1385546-A (GB)
Title: Surgical forceps
IPC: A61B17/28
Filed: 1972-05-18
Abstract: 1385546 Surgical forceps C D ADDO 4 April 1973 [18 May 1972] 23395/72 Heading A5R Surgical forceps comprise two levers 10, 12 pivotally connected at 13 and provided at one end with leaves 20 each of which is curved in two directions so that the leaves cooperate when in abutment to define a curved laterallyextending support 21. The other ends of the levers are provided with finger-holds and latching means 17 for locking the forceps in the closed position. The cross-sectional curvature of the leaves 20 may be constant or vary along the length thereof.
Patent GB-747911-A (GB)
Title: An improved gas seal for relatively rotating tubular parts of a blast furnace top
Inventor: HOOKHAM GEORGE
IPC: C21B7/18
Filed: 1953-08-25
Abstract: 747,911. Charging blast furnaces. MILES & PARTNERS (LONDON), Ltd., J. Aug. 20, 1954 [Aug. 25, 1953], No. 23490/53. Class 51(2). In a blast furnace top comprising a rotatable small hopper extending into and coaxial with a fixed large hopper, the hoppers being closed by conventional ball valves, Fig. 1 (not shown), an expansion bellows 46 initially under pressure, is disposed between the rotatable small hopper 26 and the fixed large hopper 25, and the hoppers are kept in alignment by annular bearings 39, 40 which are located so as to support forces in both opposite radial directions and in at least one of the opposite axial directions. The fixed hopper 25 has a flange 28 supporting a housing 33, and a bearing ring 30 contacting a further bearing ring 32 attached to the expansion bellows 46 which is itself attached to a flange 45 formed on the rotatable hopper 26. The upper part of the housing 33 encloses the annular bearings 39, 40 disposed between which is another flange 44 formed on the rotatable hopper 26. Concentric stability of the two hoppers is obtained by the upper race 47 of the upper bearing 39 bearing externally against a shoulder 48 of the housing, the lower race bearing against the small hopper at 49. Similarly the upper race 50 of the lower bearing 40 bears against the hopper at 51 and against the housing at a shoulder 53. The load on the bearings 39 and 40 through the hopper flange 44 may be either upward or downward depending mainly upon whether the hopper is closed or open. In a modification, Fig 3 (not shown), the bellows is loaded so that the axial thrust remains in the same direction and one annular bearing is used, being disposed between an upper ring on the large hopper and a lower flange on the small hopper.
Patent GB-461646-A (GB)
Title: Improvements in or relating to television and like transmitters
IPC: H01J31/30
Filed: 1935-08-21
Abstract: 461,646. Television transmitters. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 21, 1935, No. 23514. Convention date, Aug. 31, 1934. [Classes 39 (i) and 40 (iii)] An iconoscope transmitter includes an electrode which is made positive relative to the mosaic electrode at least during periods of image projection on the mosaic electrode, so as to collect emitted electrons and increase the sensitivity of the device. The transmission is carried out in the following stages : (i) the second anode 9 receives a negative impulse from an amplifier 91 controlled by a cell 89 energized through a shutter 85; (ii) simultaneously an impulse from an amplifier 117, similarly controlled by a cell 113, is applied between the control electrode 39 and cathode 37 of a source of electrons to spray the mosaic screen with electrons ; (iii) the impulses cease, and the second anode goes to a positive potential as the result of the negative impulse applied, see Fig. 4, and the object 25 is illuminated through a shutter 101 to produce an image on the mosaic electrode 35; the electrons emitted are collected by the second anode 9 ; (iv) the illumination of the object 25 ceases and the mosaic electrode 35 is scanned by a cathode-ray beam from the electron gun 3, 5, 7. Stage (ii) may be omitted. In a modification, the impulse applied to the second anode is positive and continues until the scanning begins, Figs. 7, 8 (not shown). The signal plate of the mosaic electrode is given an optimum potential from a potentiometer 75. The second anode may be extended round the source of electrons 37, 39, Fig. 6 (not shown).