baber/WOPTO huggingface dataset:
Patent GB-423449-A (GB)
Title: Improvements in or relating to belt conveyors
IPC: B65G43/00
Filed: 1933-08-04
Abstract: 423,449. Endless - belt conveyers. BRITISH JEFFREY - DIAMOND, Ltd., Stennard Works, Wakefield, and TINSLEY, H., Cap Frehel, Castle Hill, Sandal, both in Yorkshire. Aug. 4, 1933, No. 21984. [Class 78 (i)] In endless-belt conveyers the lower flight is protected from material dropping off the upper flight by cover plates 30, which are easily detachable and can be taken off and replaced without removing any other part of the conveyer. The plates 30 lie loosely on transverse members 26 extending between the uprights 19 of chairs which support the belt at intervals. The members 26 may be the lower parts of angle plates 20, 21 welded to the uprights 19 and inclined in opposite directions and welded together where they abut and cross at the middle, or of inverted T-section cross-members formed integrally or built-up by welding. In each case slotted lugs 23 are welded to the cross members to receive flats on the spindles of three rollers 15, 16, 17, disposed to support the upper flight in trough formation. The spindles of the rollers 15, 16 lie in slots in the uprights 19 also, and all have one end spindle longer than the other to facilitate mounting and to secure interchangeability. The lower flight may ride on horizontal rollers 18 journalled in the uprights 19. The cover plates 30 are inclined downward in an outward direction and have depending edges 31 at the inner sides, which do not meet and flanges 33, 34 at the outer sides to protect the sides of the lower flight and maintain it in position. Slots 32 in the uprights 19 enable the plates to be removed and interchanged. Angle bars &c. 35 connect the chairs together. The driving head of the conveyer may have an over-hanging jib, and the tail end may be telescopically arranged relatively to the last section of the conveyer and may have a housing overhanging that section and provided with downward extending flanges forming a trough. A scraper may be provided over the lower flight at the tail end, and a movable grid permits of access to the tail drums. Specification 360,105 is referred to.
Patent GB-416173-A (GB)
Title: Improvements in centrifugal pumps
IPC: F01K9/02
Filed: 1933-08-05
Abstract: 416,173. Centrifugal pumps. MATHER & PLATT, Ltd., and PENTNINGTON, R., Park Works, Manchester. Aug. 5, 1933, No. 22087. [Class 110 (i).] A vapour vent for a centrifugal pump comprises a hollow shaft with inlets b, d and an outlet f. The entrained vapour passes from the outlet f into a space g which is connected by a branch h to the space above the condensate in the condenser. The space g is connected by a branch i and a part j to opposite sides of the impeller.
Patent GB-1122222-A (GB)
Title: Improvements in or relating to gating circuit arrangements
Inventor: HUNTER GEOFFREY NEIL
IPC: G11C11/06
Filed: 1965-05-25
Abstract: 1,122,222. Transistor switching circuits. MULLARD Ltd. 11 Feb., 1966 [25 May, 1965], No. 22117/65. Heading H3T. A gating circuit, for attenuating unwanted switching transients occurring on a sense line of an information storage matrix, comprises two insulated gate field effect transistors (e.g. MOSTS) 2, 3 connected in series between a signal input (transformer 1) and a reference potential 9, with their common point connected to a signal output (amplifier 8); means for biasing the transistors 2, 3 to a non-conductive and a conductive, state respectively; and means for conveying switching pulses to the transistors to reverse their states. With transistor 2 cut off and transistor 3 switched on, the switching transients, which would otherwise paralyse the amplifier 8 and prevent its response to the subsequent information signal, are attenuated in transistor 2 and pass to earth through transistor 3. A negative switching pulse is then applied to the base of transistor 4 causing pulses of opposite polarity to be passed to transistors 2, 3 changing their states so that the information pulse passes through transistor 2 to amplifier 8 with no attenuation. Transistors 2, 3 may be of complementary type and driven by the same pulse form. Transistor 4 may be replaced by a PNP device which provides the advantage that transistor 2 switches on fractionally before transistor 3 so that its switching transient passes to earth through transistor 3. The faster switching of an NPN device is normally preferred, but, with an NPN device, the above advantage as regards non-coincident switching may be provided by interchanging the connections of capacitors 18, 19 to transistor 4. Any remaining transients are insufficient to cause paralysis of amplifier 8. The two field effect transistors may be formed on a common substrate which is then connected to a potential more negative than any applied to the gates.
Patent GB-321169-A (GB)
Title: Improvements in methods of and apparatus for drying or heating or cooling
IPC: F26B17/12
Filed: 1928-07-31
Abstract: 321,169. Stevens, F. J. Warden-. July 31, 1928. Gravity, materials descending by; air and gases, controlling direction of; agitating appliances.-In apparatus for drying granular material channel or angle - bars a are placed between the inlet 4 and outlet 7 for the drying gases and the louvred walls 2, 3 of the chamber through which the material falls. A revolving cowl 6 distributes the gases on the inlet side, and the outlet is divided by baffles 2<a>. Alternative arrangements of baffles in the inlet and outlet are described. Angle - bars d having parts of one side removed are located horizontally in the drying chamber. The louvred walls are reciprocated by a crank-disc F through a rocking-lever D, bars B to which the walls are connected having their ends guided in slots A. In a modification, Fig. 9, agitators 21a are mounted in the chamber on rods 21 which are reciprocated by a lever 27<a>, which is actuated through gearing by a shaft 32 on which is mounted a rotary valve controlling the outlet for the material. In a further modification the louvres 2 comprising the wall of the chamber are caused to open and close periodically. One end of each louvre is connected to a roller 35, Fig. 10, in a horizontal groove 36. The other end of each louvre is connected to a vertical bar 38 which is reciprocated by a nut 39 on the screw-threaded extension 40 of the bar. The nut is integral with a bevel wheel 41 which engages a bevel wheel 42 on a driving shaft, the direction of rotation of which is periodically reversed. Specification 175,674 is referred to.
Patent GB-851102-A (GB)
Title: Stack type oil bath filter
IPC: F02M35/026
Filed: 1959-06-29
Abstract: 851,102. Air filters. FARR CO. June 29, 1959 [Feb. 13, 1959], No. 22181/59. Class 8(2). The major portion of dust-laden air leaving the lower end of a vertical inlet duct 14 passing through the centre of the top 12 of a cylindrical filter casing 11 passes directly through a vertical filter sleeve 41 whilst the remainder passes down an imperforate secondary conduit 27 dipping into an oil sump 20 whereby oil is carried on to the filter sleeve 41 ; the combined air streams after leaving the filter sleeve traverses an auxiliary filter element 60 before being discharged through a side outlet 55 of the casing 11. The secondary duct 27 which is about half the diameter of the main duct 14 is supported by lips 52 struck from vertical arms 50 of spacing members 35 each comprising a vertical portion 37 and horizontal portions 36, 39.
Patent GB-364044-A (GB)
Title: An improved metallic capsule for bottles or the like
IPC: B65D41/34
Filed: 1930-07-23
Abstract: 364,044. Bottle &c. stoppers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Guardian Safety Seal Co.; 35, East Wacker Drive, Chicago, U.S.A.) July 23, 1930, No. 22195. [Class 125 (iii).] A metallic capsule for a bottle &c., of the type in which the capsule is weakened along two lines 8 to form a ripstrip 6 which can be removed to separate the capsule into three parts, the lower one remaining on the bottle, is seamless and is provided at its upper end with upper and lower annular distorted portions 3, 5 which form stiffening formations, a substantially single-turn thread 4 being disposed between them. This thread cooperates with a similar thread 11 near the mouth of the bottle &c., which is equipped with a bead 12, immediately below the thread. The capsule has a skirt, of less diameter than the lower stiffening formation 5, equipped with the rip-strip 6, the upper line of which is immediately below and inward of the formation 5, the skirt overlying the bead 12 on the bottle &c. neck. The combined width of the stiffening formations 3, 5 is preferably equal to that of the threaded portion 4, the latter occupying the zone of hardening influence resulting from the distortion of the metal at 3, 5, the metal of the capsule being too weak to resist deformation if the reinforcing means were not provided. The top wall 1 may be provided with a circular rib 2, of diameter substantially equal to the bottle mouth, to cause the packing discs 14, 15 to bulge and hug the inner edge of the aperture of the bottle.
Patent GB-300327-A (GB)
Title: Improved damping device for springs
IPC: B60G13/04
Filed: 1928-05-22
Abstract: 300,327. Chew, J. May 22, 1928. Vibration - dampers. - In apparatus for damping relative motion between the telescopic covers 1, 2 of a helical spring, the outer member 1 is internallv recessed to receive the band of friction material 3 and externally recessed to receive a clamping-band 5. The helical spring not shown, abuts against the ends of the covers which are preferably perforated for the passage of a guide rod or for attachment to a vehicle. The outer member 1 may be split as at 4 to facilitate clamping. Specification 272,019 is referred to.
Patent GB-155883-A (GB)
Title: Method of and means to cure, colour or otherwise treat sheets or other articles made of asbestos-cement and the like cement mixtures or compounds
IPC: C04B41/45
Filed: 1919-09-11
Abstract: 155,883. Pattison, W. Sept. 11, 1919. Making and finishing slabs ; waterproofing slabs. -An apparatus for hardening, curing, colouring, &c. sheets of asbestos cement or the like by treatment with a number of liquids in succession consists of a number of chambers a provided with heating coils b and connected to a series of vats c, d, e for containing the treating liquids by a system of pipes f, g, h provided with pumps i, j, k, and cocks l, m, n, so that any one of the liquids can be supplied to or withdrawn from any one or any number of the chambers a as required. The chambers a are provided with steam liquid tight doors, and rails q to allow the sheets to be introduced into the chambers easily. Means may be provided for siphoning liquid from one chamber to another. The sheets may be first heated and treated with dry air, then soaked in water, then treated with acid to neutralize alkali, and then with a colouring-liquid.
Patent GB-786385-A (GB)
Title: Improvements in or relating to magnetic amplifier apparatus
IPC: H03F9/02
Filed: 1955-08-04
Abstract: 786,385. Magnetic amplifiers. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Aug. 4, 1955 [Aug. 9, 1954], No. 22406/55. Class 40 (4). A linear input-output characteristic which gives a zero output for a zero input is obtained with a magnetic amplifier by applying the output of the amplifier to a transformer, the quiescent output of the amplifier being sufficient to ensure that the transformer works on the linear portion of its input-output characteristic, the output of the transformer being applied to a rectifier having a threshold voltage and the output of the transformer when energized by the amplifier quiescent output being just sufficient to equal the threshold voltage of the rectifier. In the illustrated embodiment, D.C. in a circuit supplying a load 3 from a source 2 is shunted from a resistor 15 through control windings 9 and 11 of transductor elements 6 and 7. Windings 17 and 19 of the elements are energized by A.C. from a source 20 which also supplies bias windings 23, 25, with rectified current. Output current in the A.C. windings 17, 19 flows through primary 35 of transformer 33 which is such that, as shown in Fig. 3, the quiescent current Ig in the A.C. windings holds the transformer at a point A on the linear part of its characteristic to produce a voltage Et equal to the threshold voltage of a barrier layer type rectifier 41 connected to the secondary winding 36 of the transformer. Assuming that the bias windings are not energized the output from rectifier 41 is zero when the input to control windings 9 and 11 is zero and these quantities are linearly related. If the bias windings are energized the rectifier 41 has a define output when the input to control windings 9 and 11 is zero, the output being reduced or increased depending on the sign of the input D.C. signal. This enables a D.C. meter 43 to be used with a centre-zero scale. A filter network may be. used to smooth the output of rectifier 41 and the core of transformer 33 may be constructed of a material having a substantially rectangular magnetic hysteresis loop.
Patent GB-1303166-A (GB)
IPC: G01R33/12
Filed: 1970-05-08
Abstract: 1303166 Determining ferrite content of a material COMBUSTION ENG Inc 8 May 1970 [19 May 1969] 22439/70 Heading G1N The relative ferrite content of a material is determined by mounting two A.C. energized, series connected coils 16, 18 at different distances from the test material, which causes a change in coil impedance. As described, the coils are mounted in a bridge circuit, Fig. 3 (not shown) so that the relative ferrite content is proportional to the ratio of the impedance of one of the coils to the sum of the impedances of the two coils.. Calibration is performed by using materials having known ferrite content. The device is applicable in determining the relative delta ferrite content of austenitic stainless steel, weld metal, castings, or wrought products.
Patent GB-156858-A (GB)
Title: An improved means for folding the planes of aircraft
IPC: B64C3/56
Filed: 1919-09-12
Abstract: 156,858. Bolas, H. Sept. 12, 1919. Planes, arrangement of.-The staggered planes 5, 6 of a multiplane aeroplane shown in plan in Fig. 2 are adapted to be folded back about hinges 8, 9, the axis of which, as viewed from the side of the machine, is substantially parallel to a line joining the leading edges of the main planes and is preferably on a line joining the centres of the rear spans. The axes of the hinges may also be inclined to the vertical as viewed from the front of the machine.
Patent GB-405696-A (GB)
Title: Treatment of cellulose nitrate containing camphor
IPC: C08J11/02
Filed: 1932-08-12
Abstract: <PICT:0405696/IV/1> Cellulose nitrate and camphor are recovered from materials such as scrap celluloid or film by treating the initial material with a liquid extraction agent which is an active solvent for the camphor, but which has only a softening action on the cellulose nitrate in the presence of the camphor, separating the solution from the undissolved residue, and recovering the camphor from the solution.  The extraction solvent may comprise a single solvent such as ethylene dichloride, propylene dichloride, carbon tetrachloride, and chloroform, or a mixture of solvents, for example any of the above in admixture with ethyl alcohol.  Ethyl alcohol is suitable either by itself or in admixture with benzene, toluene, water, acetone, or ethyl acetate.  Examples of suitable two-component solvents are given.  The process may be carried out in the case of cellulose nitrate film scrap by placing the scrap in the wire basket 1 of an extraction kettle 2, and running in the extraction liquid, for example, ethylene dichloride, through a pipe 4 from a storage tank 3.  A still 6 containing a further supply of ethylene dichloride is heated to boiling, the vapours being conducted through a pipe 7 and a perforated pipe 8 into the kettle 2.  Any ethylene dichloride vaporised in the kettle passes through a pipe 9 to a condenser 10 and thus through a pipe 11 to the storage tank 3.  After the heating period, ethylene dichloride is run back into the still 6 through a pipe or by opening a valve 13.  The residual cellulose nitrate may again be treated if desired.  The camphor is recovered from the ethylene dichloride solution by adding water and distilling off the solvent.  Examples are given.  The Specification as open to inspection under Sect. 91 comprises also the recovery of colloiding agents in general from cellulose esters other than cellulose nitrate, and including cellulose acetate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1099821-A (GB)
Title: Method and apparatus for linear measurement
Inventor: SAYCE LEONARD ALFRED
IPC: G01B9/02
Filed: 1963-06-06
Abstract: 1,099,821. Digital measurement of distance. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 8, 1964 [June 6, 1963], No. 22635/63. Heading G4H. [Also in Division G2] In the conventional measurement of distances using an interferometer, a mirror 4 Fig. 2, would be moved through the unknown distance in a direction along the ray path and consequently by counting the fringes by a photo-cell 5 and counter 6, the distance is determined in units of half a wavelength. The invention is concerned with making the measurement in more convenient units. As shown, the mirror is moved in the direction 7 inclined at such an angle # to the ray path that the unit of measurement is for instance <SP>1</SP>/ 80 , 000  inch. To render the unit still more convenient a frequency dividing circuit 8 may be arranged between the photo-cell 5 and counter 6 so that one pulse operates counter 6 for every eighty pulses received from the photo-cell. The unknown distance is then measured in units of one thousandth of an inch. In a modification, Fig. 3, the mirror 14 moves along the ray path but it is mounted by spring strips 15 on the carriage 11 which moves through the required distance on guide-rails 12 and the arrangement is such that according to the amount and direction of inclination of a guide rail 20 relative to rails 12, so, through pivoted lever 16, the mirror 14 is constrained to move faster or slower than the carriage 11 to give such a ratio of movement that a convenient unit of measurement results. In a further form the two arrangements are combined so that guide rails 12 are inclined to the ray path. The source of light may be a gas laser 1.
Patent GB-517488-A (GB)
Title: Improvements in and relating to two-stroke internal combustion engines having twin cylinders with common combustion chambers
IPC: F02B25/12
Filed: 1938-07-29
Abstract: 517,488. Connecting - rods. WORKS DEVELOPMENT CO., Ltd., and EHRLICH, J. July 29, 1938, No. 22662. [Class 122 (i)] [Also in Group XXVII] In a crank case compression internal combustion engine having twin cylinders and. a common combustion chamber one of the pistons is connected to one arm of a forked connecting rod by a sliding block X.
Patent GB-153422-A (GB)
Title: An improved article for use in repairing pneumatic tyres
IPC: B29C73/08
Filed: 1919-09-15
Abstract: 153,422. Dunlop Rubber Co., and Parker, J. Sept. 15, 1919. Pneumatic tyres, repairing.-As a substitute for powdered chalk in tyre-repair outfits, a block A of talc or like material is carried in a metal &c. holder B, one face of which may be serrated as at B<4> to form a file or scraper.
Patent GB-935995-A (GB)
Title: Improvements relating to disc brakes
Inventor: WELLS KENNETH JOHN
IPC: F16D55/228
Filed: 1958-07-10
Abstract: 935,995. Disc brakes. GIRLING Ltd. Sept. 7, 1959 [July 10, 1958], No. 22722/63. Divided out of 935,994. Class 103 (1). In a disc brake of the kind comprising a calliper 10 which straddles a portion of the disc 11 and in or on both limbs of which are provided cylinders 16 containing pistons 15 operated hydraulically to apply pads 13 to opposite faces of the disc, the pads or, as shown, backing members 14 to which the pads are bonded, engage a single torque-taking member, e.g. a pin 21, which is removably mounted in the calliper and takes the braking torque in both directions of rotation of the disc, the calliper being formed so as to allow easy removal of the pads when the torque-taking member is removed. The pin 21 preferably passes through aligned apertures in the backing members 14 and guiding lugs 22, 23 prevent rotation of the pads about the axis of the pin. The internal upper edge 20 of the calliper is inclined to break into the outer surface of the calliper adjacent one end, so that after withdrawal of the pin 21 the pads can be removed circumferentially.
Patent GB-847555-A (GB)
Title: A tractor
IPC: B62D49/06
Filed: 1958-07-16
Abstract: 847,555. Motor vehicle frames. ZKL ZAVODY NA VALIVA LOZISKA A TRACKTORY NARODNI PODNIK. July 16, 1958 [July 25, 1957], No. 22818/58. Class 79(4). A tractor has an unsprung frame 3 rigid with the rear axle 1 and with a longitudinal pivot 5 for the front axle 2 and a sprung frame 10 carrying the engine 12, radiator 13, gear box 24, steering column 15, fuel tank 16, accumulator 17, seat 18, floor 25, mudguards 19 and the brake clutch and other controls. An implement may be secured to the frame 3 by means of apertures 6 or it may be carried by a hydraulically-actuated three-point linkage 9. The engine 12, radiator 13 and an air filter are connected by resilient members 11 to the frame 10 which is connected by springing and damping means 20. 21 to the frame 3. Cardan shafts 22, 23 drive the differential 4 and a power take-off shaft 7.
Patent GB-1503043-A (GB)
Title: Shelving structures
IPC: A47B57/30
Filed: 1976-06-03
Abstract: 1503043 Shelving H LUNDQUIST 3 June 1976 [5 June 1975] 22894/76 Heading A4B A shelving structure comprises side walls 3, 4 each provided at its front edge with a reinforcing post 7, 8 having a series of vertically spaced apertures 9, a back plate 2 extending between the side walls 3, 4, a plurality of removable shelves 11  each provided at its front edge with a reinforcing rail 30, each shelf 11 being supported at its rear by hook-like members 12 selectively engaged in holes 13 in the back plate 2 and its front by fittings 10 detachably engaged in the ends of the rail 30 and selectively hooked into the apertures 9, and means for holding the back plate 2 against rear parts of the shelves. As shown, the back plate 2 is secured to the side walls 3, 4 by spiked fittings 51. The back plate 2 may comprise two panels fitted one above the other and having complementary V- shaped, interfitting edges at their dividing line 15. In another embodiment shelves are provided on both sides of the back plate 2, the side walls 3, 4 each extending to both sides of the back plate 2 and having a reinforcing post 7, 8 at each vertical edge. Shelves at the same level on opposite sides of the back wall 2 are supported by single fittings (12'), Fig. 6a, 6b (not shown) extending through the holes 13 in the back plate 2.
Patent GB-170150-A (GB)
Title: Improvements in and connected with doll heads of steam drying cylinders and the like
IPC: F26B13/14
Filed: 1920-08-04
Abstract: 170,150. Murray, W. Aug. 4,1920. Adjusting for wear and position.-The trunnion-bearing of a steam drying-cylinder comprises a sleeve M and bearing caps K formed in two parts to facilitate the removal of the cylinder from the bearings. The bearing is adjusted by means of the screw J and is provided with ring lubrication.