baber/WOPTO huggingface dataset:
Patent GB-522283-A (GB)
Title: Improvements in or relating to saw blades
IPC: B23D61/12
Filed: 1938-12-05
Abstract: 522,283. Saws. OWEN, J. L. Dec. 5, 1938, No. 35438. Convention date, March 24. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 1, 1939.] [Class 145 (ii)] The saw is formed with a plurality of main teeth each consisting of a number of cutting teeth 13, 14, 15, 16 and a raker 19 with two teeth and chip spaces 12 on each side, all the teeth being so arranged that four different tooth point distances are repeated along the saw, that is, two different distances between teeth 15, 16 and teeth 13, 15 or 14, 16, one across the chip space 12 and one between the teeth of the raker. The two oppositely facing raker teeth are upset in the longitudinal direction so that they are shorter than the cutting teeth and resemble planing cutters.
Patent GB-507915-A (GB)
Title: Improvements in and relating to optical projection apparatus
IPC: G03B21/08
Filed: 1937-12-22
Abstract: 507,915. Optical-projection apparatus. ANCIENS ETABLISSEMENTS BARBIER, BENARD, & TURENNE. Dec. 22, 1937, No. 35465. Convention date, Dec. 22, 1936. [Class 97 (i)] Apparatus for use as a diascop e or an episcope comprises an horizontal object support 1 and a frame 2 carrying the projection system, the frame forming an open-ended case and being mounted to provide a space 3 between the frame and the support 1 over most of the periphery of the latter so that the operator may pass his hands therethrough. The illumination is effected by one or more lamps 13, the light passing a water tank 17 and an opening 12 to be reflected by a mirror 15 on to the object which is pressed against rubber pieces 6 on a slide 5 by a glass 8 sliding on vertical guides 10 and held in its operative position by a catch. The light reflected from the object. passes via an adjustable mirror 19 to the objective. For diascopic projection the slide 5 is removed and replaced by a transparent carrier supporting a condenser and water tank for a lamp located below the plate 1. The transparency to be projected may comprise several superimposed sheets bearing diagrams or coloured elements having apertures engaging locating hooks on the carrier. A pivoted mirror 40 may be placed in the beam to reflect it through an auxiliary diascope having an object carrier 42. In the modification shown in Fig. 3, light from the objective 20 is reflected by adjustable mirrors 24, 25, 27 to the screen, and by closing the aperture 26 by the pivoted shutter 29 and removing the mirror 27, light may be projected directly from the mirror 25 to the screen through an aperture normally closed by a shutter 28.
Patent GB-1390873-A (GB)
Title: Piping systems for low temperature fluids and methods of  forming the same
IPC: F16L27/12
Filed: 1973-07-25
Abstract: 1390873 Metal pipes PRELOAD TECHNOLOGY Inc 25 July 1973 [29 Sept 1972] 35533/73 Heading F2P A pipe suitable for low temperature fluid comprises a metal conduit 26, an outer concrete pipe 28 surrounding said conduit and defining an annular space 36 therewith and means rigidly connected to the outside of the conduit and abutting or being capable of abutting the end of said outer concrete pipe to transfer compressive stresses thereto upon thermal contraction of said conduit. In the arrangement shown two conduits 26, 76 welded at 85 each have an outer concrete pipe 28, 78 spaced from the conduits by spacers 30, 80. A flange 40 is rigidly secured to conduit 26 and backed by stiffeners 42. On each side of flange 40 annular insulating rings 44, 46 (e.g. of p.v.c.) are positioned in abutting relationship with flanged ends of the concrete pipes 28, 78. Initially there may be a small space between, the insulating rings to take up some of the contraction of the pipes 26, 76 before the rings contact the flanges. The annular space between the conduits and the pipes may be filled with an insulating material, e.g. perlite. In a further embodiment (Fig. 5, not shown) a bellows type expansion joint is incorporated between the two conduits. In this embodiment also the concrete pipes are prestressed with circumferential and longitudinal wires. The concrete pipes may also incorporate steel shells within their walls to prevent seepage of fluids through the walls.
Patent GB-1465648-A (GB)
Title: Method of and apparatus for the draw-in of powdered material
IPC: B29B7/60
Filed: 1974-08-13
Abstract: 1465648 Calendering HERMANN BERSTORFF MASCHINENBAU GmbH 13 Aug 1974 [23 Aug 1973] 35607/74 Heading B5A In order to reduce blow-back and thus improve the draw-in of powdered material, e.g. P.V.C. into the first roller gap 11 of a calender or rolling mill, the material is heated and compressed between one of the draw-in rollers, e.g. 3 and a roller 1 of smaller diameter prior to entering the gap 11. The material may be heated by the roller 1 and/or whilst it is being fed by a dispenser 9. The roller 1 may have a roughened shell, have a steplessly variable rotational speed and be movable in the direction of arrow 12 with a constant pressure.
Patent GB-1183086-A (GB)
Title: Polyamide Composition
IPC: C08L77/00
Filed: 1967-08-03
Abstract: 1,183,086. Antistatic nylon compositions; sulphonated addition polymers. TOYO RAYON K.K. 3 Aug., 1967 [5 Aug., 1966; 7 Jan., 1967], No. 35694/67. Headings C3P and C3R. Fibre-forming polyamides are rendered antistatic by incorporating therein 0-1 to 10 wt. per cent of a water- or alcohol-soluble substantially linear polymer of a compound containing the group CH 2  = CH- or which polymer contains 0.2 to 2 sulphonate groups per repeating unit, 10 to 95% being Li, K, Na or Ca sulphonate salt groups and 5 to 90% being ammonium or amine sulphonate salt groups. If other metal sulphonate or free acid groups are present they must not constitute more than 5% and 10% respectively of the total sulphonate groups. The polymer may have a M.W. of 1000 to 300,000 before neutralization and may be derived from styrene, vinyl toluene or alpha methyl styrene and various possible comonomers. The polyamide may also contain up to 7 weight per cent of a polyalkylene oxide, preferably of molecular weight above 1,000,000. Several polyamides are mentioned; the sulphonated polymers may be incorporated therein before, during or after polymerization and when the polyamide is derived from a lactam it may function as a catalyst. Delusterants, stabilizers, other antistatic agents, dyes and pigments may also be incorporated in the polyamide. The preparation of the specified sulphonated polymers from polystyrene and styrene/methyl methacrylate and methyl methacrylate/sodium methallyl sulphonate copolymers is described in the examples.
Patent GB-1515448-A (GB)
Title: Packing device for transport and storage of products
IPC: B65D6/24
Filed: 1976-08-27
Abstract: 1515448 Containers LIQUITAINER SA 27 Aug 1976 [16 June 1976] 35756/76 Heading B8P A packing for a flowable material comprises a plastics bag 10 and a rigid outer casing 11, the casing having four dismantlable sides 13, 14 at least two of which have handles 15 for cooperation with slings (69), Fig. 10 (not shown). The casing 11 has a base platform 12 defined by beams 16 and plates 17, 18, the upper one of which 17 has means 51 for co-operating with ridges 53 on the sides 13, 14 to locate them. Adjacent sides are joined by removable pins 50, and are defined by frames 30, 35, 44, 45 clad with plates 30A, 40A, the sides 13 being attached to the platform 12 by rods 39 including threaded portions 42 for releasable cooperation with nuts 43. The platform 12 is reinforced by a member 21 preferably formed from steel angle-irons 25, 26. The handles 15 are defined by slidably mounted U-shaped members having retaining projections 38 and are located within notches 32 in frame beams 31 when inoperative to facilitate stacking of similar packings, the plate 18 being shaped to locate the platform 12 on a lower packing when stacked. Bars (61), Figs. 8 and 9 (not shown), may project from holes 62 in the member 21 to engage the handles 15 of the packing below in a stack in order that the stack may be lifted by the slings (69) as a unit.
Patent GB-407156-A (GB)
Title: Improvements in photographic and the like objectives
IPC: G02B13/00
Filed: 1932-12-17
Abstract: 407,156. Lenses. LEE, H. W., and KAPELLA, Ltd., 104, Stoughton Street, Leicester. Dec. 17, 1932, No. 35823. [Class 97 (i).] Relates to photographic &c. lenses of the kind comprising four airspaced meniscus components of which one of the inner components is collective and the other dispersive, the outer component next to the inner dispersive component being collective and the two components constituting each half of the system having their concave surfaces turned inwards. According to the invention the lens consists of three components which are successively collective, dispersive, and collective, and a fourth component which is either collective or of zero power, is compound, and comprises a double concave element and a double convex element placed outermost in the system. The separating surface of the two elements of the compound fourth component has collective power. Data are given for the example shown in which the said compound component is on the side of the shorter conjugate, and for another example in which this component is on the side of the longer conjugate. Each form provides a flat field of about 70‹ and has an aperture of f /4.5.
Patent GB-326176-A (GB)
Title: Process for the manufacture of complex antimony salts
IPC: C07F9/90
Filed: 1928-12-05
Abstract: 326,176. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). Dec. 5, 1928. Complex antimony salts; diethylamine and diethylaminoethanol antimonates.-Complex antimony compounds are produced by causing an oxygen compound of pentavalent antimony to react with an aliphatic hydroxy carboxylic acid, for example, in solution, either in the presence or absence of a base, which may be a nitrogen base. For example, tartaric acid may be dissolved in caustic soda solution and diethylaminoethanol antimonate (obtainable from antimonic acid and diethylaminoethanol) is added. Or the complex salt of mucic acid can be produced by starting, for example, from the salt of diethylamine and antimonic acid, or diethylamine and mucic acid or from both compounds. Other acids specified are lactic, citric and gluconic. The complex salt may be obtained by precipitation with a suitable organic liquid, for example methyl alcohol, or by evaporation.
Patent GB-412198-A (GB)
Title: Improvements in or relating to the conforming of shoe uppers to the shape of lasts
IPC: A43D25/20
Filed: 1932-12-20
Abstract: 412,198. Boot - making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., Union Works, Belgrave Road, Leicester.-(United Shoe Machinery Corporation ; 140, Federal Street, Boston, U.S.A.) Dec. 20, 1932, No. 36038. [Class 17 (i).] Lasting.-In a lasting machine, a heated presser is provided for engaging the margin of the upper wiped over on to the insole for accelerating the setting of adhesive previously applied to the parts or for smoothing down pleats, or both. As applied to the type of bed-lasting machine having a toe band 18 and toe end wipers 14 operated by a hand-lever, a presser member 26 heated by electric units 50 is carried by a ball 46 on an arm 28 slidable by a lever 44 in a holder 30 supported on a vertical rod 32, which holder can be depressed by a treadle provided with a latch for maintaining it depressed. This mechanism is similar to that usually provided for a hold-down, e.g. as described in Specification 19512/11, [Class 17 (i)], and may be used therefor, the heated presser being substituted after wiping. A pin and spiral slot connection between the holder 30 and rod 32 causes the presser member to descend as it is swung to operative position. The presser is provided with a handle 54. In use, the upper may be wiped upwardly at the toe end by manipulation of the usual handle and treadle, after which the upper is clamped about the toe by the band 18. The margin of the upper is then wiped inwardly over the insole and the wipers retracted. Pyroxylin cement is then applied, after the trimming away of surplus lining and projecting stiffener. With or without another traverse of the wipers, the heated presser block is swung into position preferably forward of the inner edge of the upper margin. While pressing the block downwardly by the treadle, the operator then advances the wipers to force the block rearwardly of the shoe, then increasing the pressure and allowing the latch to maintain this final heavy pressure for a few seconds. The latch may then be tripped and the work removed.
Patent GB-960883-A (GB)
Title: Process for reducing the gas permeability of bodies consisting substantially of carbon
IPC: C04B41/45
Filed: 1960-10-20
Abstract: Gas permeability of bodies consisting substantially of C is reduced by repeated impregnation with carbonizable liquids whose viscosity decreases at each impregnating stage and between each impregnating stage the impregnant in the body is heated, below the temperature at which carbonization occurs but at a temperature at least equal to that at which hardening occurs, preferably in air, and then heated to carbonization in a non-oxidizing atmosphere.  The gas permeability, initially preferably not more than 10-1 cm.2/sec., of amorphous C or graphite is reduced after a 3-stage treatment to e.g. 10-7 cm.2/sec. with impregnants, whose viscosity decreases from 2000 cP max. to 1 cP and which give a C separation of e.g. 30-60% on carbonization at e.g. 20-700 DEG C. which follows the first heat treatment at e.g. 100-250 DEG  C.  The impregnant may be pitches or synthetic resins which may be modified by a dehydrating agent, furfural with pitch, furfuracrolein resin, phenolformaldehyde resole, hydroxybenzyl alcohol, or furfuryl alcohol with or without phenolformaldehyde resole or hydroxybenzyl alcohol e.g. 1%, and they may contain a hardener, e.g. up to 5%, which effects a hardening only after impregnation but during the pre-carbonisation heat treatment.  The hardener may be benzotrichloride. A foaming and hardening agent, e.g. benzenesulphonic acid hydrazide, may also be added to the impregnant. The pre- and carbonization heat treatments may include irregular temperature variations, e.g. between 20 DEG  and 200 DEG  C., due to cooling.
Patent GB-1130291-A (GB)
Title: Angular rate transducer
IPC: F15C1/00
Filed: 1963-09-12
Abstract: 1,130,291. Speedometers. R.E. BOWLES. Sept.12, 1963 [Sept.21, 1962], No.36079/63. Heading G1K. In a rate of rotation measuring device, a fluid stream from nozzle 1 is directed to the apex 3 of the receiver 2, formed in the plate 14. Rotation of the plate about an axis perpendicular to the plate, causes fluid from 1 to enter the channels A and C unequally, depending upon the direction of rotation. The difference in the rates of flow through A or C is a function of the rate of rotation. The action of plate 16 is similar to that of 14, the two plates being secured together between the end-plates 18, 19. The effect of linear acceleration is eliminated as the jet deflections from the nozzles 1 and 7 are equal and opposite. A combination of three similar systems may sense rotation about three perpendicular axes.
Patent GB-378758-A (GB)
Title: An improved apparatus for display or advertising purposes
IPC: A47F5/025
Filed: 1931-12-31
Abstract: 378,758. Changing signs. GORE, A., 27, Chancery Lane, and COUPER, L. C., 2, Crane Court, Fleet Street, both in London. Dec. 31, 1931, No. 36087. [Class 3 (i).] A partitioned platform bearing stage representations is rotated intermittently to display the representations consecutively at a proscenium opening, and curtains are drawn before movement and withdrawn when the platform is again stationary. Fig. 3 shows in plan the platform 14, which is rotated step-by-step by the engagement, with sets of teeth 12 on a wheel 13 on the platform spindle, of teeth 11 on a drum 10 rotated continuously through gearing 6a, 7 by a motor 5. The platform 14 is notched at 50 to receive a locking arm 48 pivoted at 49 and biased by a spring 52. A cam 16 on the drum 10 engages an arm 51 fixed to the arm 48 to free the platform at the requisite periods. The curtains hang from two rods 37, 40, Fig. 5, and are controlled by inner end rings 36, 42 mounted on projections 35, 43 riding on parallel rods 28 and fixed to opposite sides of an endless cord 32 passing round pulleys 31. Motion is imparted to the cord 32 by an arm 24 pivoted at 24a and controlled by an arm 24b, Fig. 3, acted upon by a cam 15 on the drum 10. An arm 17 pivoted at 18 and controlled by the cam 16 acts through links 20, 21 to retract the arm 24. The cams 15, 16 are at different levels to engage only their respective arms 17, 24b. The arm 48 may be combined with a switch to light up lamps in the displayed sector of the platform 14 only when this is stationary. Moving clockwork &c. models of animals or human figures may be displayed on the platform.
Patent GB-396277-A (GB)
Title: Improvements in balloons
IPC: G09F21/10
Filed: 1932-12-21
Abstract: 396,277. Signs. ANTONI, U., 31, Old Compton Street, London. Dec. 21, 1932, No. 36247. Convention date, Dec. 22, 1931. [Class 3 (ii).] A captive balloon for advertising or signalling purposes comprises an elongated gas bag A from which a lattice frame B is suspended, this frame having boxes C, fitted with electric lamps and stencils, adjustably clipped to it. Current is supplied to the lamps from a battery on board or through leads secured to the cable.
Patent GB-1317989-A (GB)
Title: Flow meters
IPC: A01D41/127
Filed: 1970-07-27
Abstract: 1317989 Combine harvesters MASSEYFERGUSON INDUSTRIES Ltd 27 July 1970 [8 Sept 1969] 36285/70 Heading A1F [Also in Division G1] A meter for flow rate of grain threshed in a combine harvester 10 is placed below the concave or under the straw walkers and comprises a piezoelectric transducer 32 producing voltage spikes in response to impingement of threshed material from which signals characteristic of grain are distinguished by frequency and amplitude detectors 50, 52 respectively, from which characteristic signals a monostable multivibrator 54 is triggered and produces square waves which are averaged at 60 and displayed on a meter 30 calibrated in terms of grain flow rate.
Patent GB-970852-A (GB)
Title: System for introducing air into the air space of air pressure vessels
IPC: E03B11/06
Filed: 1963-09-16
Abstract: 970,852. Controlling liquid leveL SULZER BROS. Ltd. Sept. 16, 1963 [Sept. 19, 1962], No. 36388/63. Heading G1H. In a system for introducing air into the air space of an air pressure vessel 2 the system comprises a receptacle 4 adapted to be connected alternately to the vessel 2 or atmosphere, the bottom part of the receptacle 4 being connected to the vessel 2 by a pipe 5 which opens into the vessel 2 of the desired water levels therein, the top part of the receptacle 4 being connected by a pipe 6 to the vessel 2 at a level which is not below that at which the pipe 5 opens into the vessel 2. The system operates as follows: With the valve 7 in the position shown in Fig. 1 any water above the pipe 5 discharges into the receptacle 4 and, by its static air pressure, the water opens a non-return valve 10 so that air present in the receptacle 4 is displaced into the vessel 2. After the receptacle 4 has filled with water the valve 7 is turned to the position shown in Fig. 2 to connect the receptacle 4 to atmosphere and empty the water therefrom and at the same time suck air through a pipe 11 and non- return valve 12 into the receptacle 4. The valve 7 is now returned to the position shown in Fig. 1 and the cycle repeated.
Patent GB-797614-A (GB)
Title: Improvements in or relating to thread draw-off devices for sewing machines
IPC: D05B51/00
Filed: 1955-12-20
Abstract: 797,614. Sewing machines. PFAFF AKT.- GES., G. M. Dec. 20, 1955 [Dec. 24, 1954], No. 36396/55. Class 112 A sewing machine in which a device adapted to pull off a predetermined length of thread when the presser bar is raised, comprises a pull-off member which is pivotally connected to the presser bar and has a limited path of pivotal movement. The needle thread 5 passes under a pulloff finger 10 which is pivoted at 19 to a plate 15 slidable on the presser bar 3, plate 15 being interposed between upper and lower compression springs 17 and 35, the latter of which abuts a collar 16 fixed to the presser bar. Finger 10 is normally held at right angles to the presser bar by means of a torsion spring 20 which biases a pin 23 on finger 10 against plate 15. The lower edge of finger 10 is formed with a portion 25 which terminates in a bevel 26. A plate 32, fixed to collar 16, has an upper edge 33 formed with a projection 34. When the presser bar is raised, by means of a lever 14, projection 34 engages bevel 26 to move finger 10 horizontally upwards, until finger 10 engages the upper end 28 of a slot 27, when projection 34 rides off bevel 26 and edges 25 and 33 co-operate to pivot finger 10 downwardly, until the latter engages an adjustable stop 29 at the lower end of slot 27, for pulling off a length of thread.
Patent GB-753128-A (GB)
Title: Improvements in or relating to ultra-high-frequency amplifiers
IPC: H01S1/02
Filed: 1954-12-17
Abstract: 753,128. Gyromagnetic amplifiers. MARIE, G. R. P. Dec. 17, 1954 [Dec. 28, 1953], No. 36652/54. Class 40 (4). An ultra-high-frequency amplifier adapted to be inserted in series between two coaxial cylindrical wave guides 4, 5 dimensioned for propagation of energy in the TE01 mode comprises a cylindrical resonator 2 coaxial with the guides, and containing a rod 3 of insulating material of very high permeability (e.g. ferrite) arranged along its axis; the rod 3 being subject to a steady magnetic field due to the magnet 6; and the resonator being further excited by a circularly polarized TM11 wave of frequency lower than (preferably <1>/10 of) the frequency of the wave to be amplified. As shown the latter wave is introduced from a source 13 via a rectangular waveguide 12 and a slot 11. Owing to the Faraday effect the resonance frequencies for the two directions of rotation are different so that if one of these frequencies is chosen, the resonator is automatically excited by circularly polarized waves with the associated direction of rotation. The rotation of the magnetic field causes precession and nutation of the uncompensated electrons of the ferrite and the angular frequency of the input wave is arranged to be approximately equal to (slightly less than, in practice) the natural angular frequency of nutation of the electron. The output wave derives its energy from the nutation motion of the electron, which is correspondingly damped and this in turn influences the precession motion which has to be maintained by energy derived from circularly polarized auxiliary wave. It is shown mathematically that for optimum results the auxiliary wave frequency must be approximately equal to the frequency of the conventional ferromagnetic resonance.