baber/WOPTO huggingface dataset:
Patent GB-367839-A (GB)
Title: Means for determining the percentage of moisture or paraffin or other dielectric substances of stratified or fibrous materials
IPC: G01N27/22
Filed: 1930-11-25
Abstract: 367,839. Hygrometric apparatus. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Nov. 25, 1930, No. 35491. Convention date, April 26. [Class 97 (iii).] The percentage of moisture in stratified materials such as cloth or impregnated paper is obtained by electrical capacity measurements wherein the condenser plates are arranged so that the electric field runs parallel to the layer or fibre of the material. The condenser plates C, Fig. 1, may be provided with staggered projections B, B<1> located on opposite sides of the material A under test. In a modification, the plates are formed with extended tips similar to those of pole-shoes. Currents responsive to capacity changes may be employed for regulating electric heating drums to dry the material under test, or the material may be moistened by brushes which are immersed in water to a variable degree.
Patent GB-1267484-A (GB)
Title: Monoazo dyestuffs
Inventor: SUCHANEK PETER
IPC: C09B29/30
Filed: 1970-07-22
Abstract: 1,267,484. Monoazo dyes. FARBENFABRIKEN BAYER A.G. 22 July, 1970 [23 July, 1969], No. 35505/70. Heading C4P. The invention comprises monoazo dyes of formula wherein ring A may be substituted by halogen atoms or alkyl groups, R is H, alkyl or aryl, R 1  and R 2  are H or Cl, at least one being Cl and the -SO 3 H group is in the 4-, 5-, 6- or 7-position. The dyes are prepared by azo coupling and may be used to colour natural and synthetic -polyamide materials in red shades.
Patent GB-958445-A (GB)
Title: Improvements in or relating to suction cleaner nozzles
IPC: A47L9/06
Filed: 1962-09-19
Abstract: 958,445. Suction cleaner nozzles. SIEMENS-ELECTROGERATE A.G. Sept. 19, 1962 [Oct. 31, 1961], No. 35752/62. Heading A4F. In a suction cleaner nozzle 1, 2 a comb 8 is provided at the underside of the nozzle, and an air inlet 12 is situated in the upper part 1 of the nozzle, the arrangement of the comb 8 and the construction of the nozzle 1, 2 being such that a stream of suction air flows downwardly through inlet 12 about the comb 8 and into suction aperture 3 during use of the nozzle. The lower part 2 of the nozzle has on its lower edge 5 a recessed portion 6 in the region of the aperture 3, in which recess there is situated a slot 7 for the comb 8. The comb 8 set in a metal strip 9 is mounted in an articulated fashion in the slot 7, the teeth 10 of the comb 8 extending as far as, or slightly beyond the lower edge 5 of the lower part 2 of the nozzle.
Patent GB-1000905-A (GB)
Title: Improved apparatus for investigating basal metabolism
Inventor: JECMINEK JAROSLAV
IPC: A61B5/095
Filed: 1962-09-20
Abstract: 1,000,905. Spirometers. PRESNA MECHANIKA NARODNY PODNIK. Heading A5K. A spirometer has the various gas chambers arranged concentrically around a central column. The central column 8 is supported in a bearing 3 within a base 2 and and is rotated at an appropriate speed by a motor 6 having a friction wheel 5 engaging a flanged plate 4. The chamber assembly 9 is made of lightweight plastics material and is arranged to be vertically slidable on the column 8 but is constrained to rotate with it by a lug engaging in a longitudinal groove in the column. Concentric vertical walls 18,-19 divide the assembly 9 into two annular chambers of which the inner one has a support 12 for carbon dioxide absorbent while the latter has floats 11 which balance its weight, the walls being intermeshed with double walls 10 extending from the base and filled with water. Inhalation and exhalation tubes are connected to the bottom of the chamber 18 and the chambers are initially filled with air or oxygen so that they are raised to the top of their travel. As the user breathes they descend and rise and the absorption of carbon dioxide causes a general fall, and a record is obtained by attaching a sheet of paper to the outside of the assembly 9 and marking it with a pen 17. In some cases the communicating ducts 21 may be closed so that only one chamber is brought into use, as may be necessary when testing a child, and the motor may be fitted with alternative drive wheels to give different rates of rotation of the draw.
Patent GB-1361524-A (GB)
Title: Fish lure
IPC: A01K85/12
Filed: 1972-08-02
Abstract: 1361524 Fishing lures P J WATTS 2 Aug 1972 35991/72 Heading A1A A lure of the 'Devon minnow' type has two laterally extending fins 2 which are moveable between two positions so that the direction of rotation of the lure as it passes through the water can be reversed to prevent twisting of the line. The lure comprises two relatively rotatable body parts 7, 8 which fit together so that diametrically opposed pairs of triangularly shaped apertures 11, 12 are aligned to receive the respective root portion 13 of a fin 2. When the part 7 is rotated with respect to the part 8, the fin 2 is moved from a first inclined portion in which it is retained by the edges 11, 12, of the associated aperture 11, 12 to a second inclined position in which it is held by the edges 11 2 , 12 2 . These edges, in each of the two positions define a parallelogram-shaped slot which cooperates with the root portion 13. The root portion is of each fin has a head portion 14, which is initially passed through a hole defined by apertures 11, 12 when the parts 7, 8 are pushed together, to engage the inner surface of the body. A split ring 18 is provided on the body 8 to prevent subsequent axial movement of the two parts to an extent whereby the head 14 can be withdrawn. The two parts 7, 8 are biased away from each other by a spring 17 and the biasing force retains the bias in either of the two positions. The two parts 7, 8 are preferrably formed from heavy metal, e.g. brass and the body has an axial bore 3 through which a fishing line passes in the conventional manner.
Patent GB-874840-A (GB)
Title: Improvements in or relating to paper manufacture
Inventor: BREWER FREDERICK JOHN
IPC: D21F5/02
Filed: 1956-11-26
Abstract: 874,840. Drying apparatus. PARKINSON COWAN Ltd. Nov. 26, 1957 [Nov. 26, 1956; May 1, 1957], Nos. 36098/56 and 13920/57. Class 96. Apparatus for drying a web of paper comprises a plurality of steam-heated cylinders and at least one radiant heater, e.g. an electric heater or a burner burning fluid fuel, located so that it directs more radiant heat on to the middle part of the web than on to its edges to counteract any tendency for the edges to dry out before the middle part. The radiant heater may be a gas burner, in which a gas-air mixture is passed through perforations in a ceramic plate and burnt on its surface. The heater may heat one side of the web as it passes over a cylinder or between cylinders and a reflector plate may be provided on the other side of the web. The heater may be positioned to heat the air locally, and thus produce convection currents, which prevent blanketing of the web by moist air. The apparatus may also comprise rollers for squeezing the wet web and a generator, such as an air-whistle, for producing acoustic or ultrasonic air-waves, which help in the drying of the web by conducting moist air away from it. At least one radiant heater and one generator may be provided before the squeezing rollers and the first steam-heated cylinder.
Patent GB-1130028-A (GB)
Title: Insulated-gate field-effect transistor
IPC: H01L29/00
Filed: 1966-08-12
Abstract: 1,130,028. Field-effect transistors. INTERNATIONAL BUSINESS MACHINES CORP. 12 Aug., 1966 [29 Sept., 1965], No. 36168/66. Heading H1K. The distance between part of the gate electrode of an IGFET and the channel is made different from the distance between the remainder of the gate electrode and the channel thus reducing the effective length of the gate to produce a high transconductance for the transistor. In an N-channel depletion mode transistor the centre portion of the gate electrode is closer than the remainder to the channel so that the higher electric field of this portion causes closure of the channel here before it occurs over the other portions, so that the effective length of the channel is almost zero at the threshold gate voltage. In a deep enhancement mode transistor with, eventually, a P-channel, the central position of the gate is further than the remainder from the channel so that inversion last occurs under this controlling portion. Further devices described are generally similar (see e.g. Fig. 5) but have divided gate electrodes so that portions may be operated at constant voltage enabling the signal-gate to drain capacitance to be reduced. The devices described are silicon transistors with oxide gate insulation genetically grown under specified conditions. To vary the electrode-channel spacing the gate insulation may be shaped by single step etching processes or by a series of successive etching steps using, as appropriate, masks of increasing or decreasing sizes. The oxide layer may be that used as the diffusion mask during formation of the source and drain regions. Phosphorus diffusion is described for forming source and drain regions in one of the transistors.
Patent GB-907463-A (GB)
Title: Method of producing sodium borohydrides
Inventor: JENKNER HERBERT
IPC: C01B6/00
Filed: 1960-10-21
Abstract: Sodium borohydrides, e.g. NaBH4 or NaB2H7, are produced by reacting sodium hydride with a borane, e.g. B2H6, in the presence of 0,1 to 30 mol. per cent of an organo-boron activator.  The activators are boron trialkyls, boric acid esters, alkyl boron hydrides, alkoxy boron hydrides, or alkyl boric acid esters, or addition compounds thereof, e.g. an ethyl boron hydride.  The activator may be produced in situ from an organo aluminium compound and boron hydrides, or boron halides. The activator may be present in amounts of 0,1 to 5 mol. per cent related to the sodium hydride, the reaction temperature being between 50 DEG  and 100 DEG C.  The reaction may be carried out in an inert dispersant.  The boron hydride may be produced by reacting an organosilicon hydride with boron trichloride and passing it through a trap containing an N-trialkyl borazane to remove unreacted boron trichloride.  The organo silicon chloride can be re-converted into the hydride by means of sodium hydride activated with an organo-aluminium or organoboron compound and thus re-used in a further cycle.  Specifications 823,483 and 907,462 are referred to.
Patent GB-802693-A (GB)
Title: Improvements in pulse frequency measuring apparatus
IPC: G01R23/10
Filed: 1955-12-19
Abstract: 802,693. Frequency measuring apparatus. HOBSON, Ltd., H. M., and FELLOWS, H. Oct. 22, 1956 [Dec. 19, 1955], No. 36337/55. Class 40 (1). In apparatus for measuring the rate of generation of electrical pulses, the pulses are fed to a chain of frequency dividers and a selector switch enables a ratemeter to be connected to any desired divider of the chain. As shown, a liquid flowmeter of the kind described in Specification 752,496 comprises a rotor 1 in a conduit 2 which rotates at a speed proportional to the rate of flow of the liquid and which has in one or more of its vanes a magnet 3 arranged to pass close to a solenoid 4, the pulses produced therein being amplified at 5 and fed to a shaper 6 comprising a monostable flip-flop and associated differentiating circuit, the output of which, consisting of pulses of short duration, is passed, via a chain of four binary frequency dividers 7<SP>1</SP>-7<SP>4</SP> of the Eccles Jordan type, to the driver 9 of a counter 8, and a monostable flip-flop 11 with meter 12 in the anode circuit of its normally cut-off section, as described in Specification 798,507, is connected via a four-position switch 10 to the output of any one of the frequency dividers 7<SP>1</SP>-7<SP>4</SP>. Reference has been directed by the Comptroller to Specification 752,496.
Patent GB-1193996-A (GB)
Title: Improvements in and relating to the Mounting of Spacers on Reinforcing Bars
IPC: E04C5/16
Filed: 1967-08-09
Abstract: 1,193,996. Tool for mounting reinforcement spacers. HALMSTADS JARNVERKS AB. 9 Aug., 1967 [9 Aug., 1966], No. 36598/67. Heading E1W. In a device for mounting disc-like plastics spacers on reinforcing bars, spacers 2 are arranged in a magazine 1 and are released by a plunger 16 which pushes the lowest spacer past a spring 3 so that it falls down a tapered passage 5, 5a with its main plane vertical. When it reaches the bottom of the passage it is pushed past a spring-advanced knife blade 24 by a lever 20 and is slit to its central hole and then after withdrawal of the knife is pushed on to a reinforcing rod 18 held in position by members 36.
Patent GB-975798-A (GB)
Title: Improvements in or relating to sliding electrical contacts
IPC: H01P1/12
Filed: 1962-09-27
Abstract: 975,798. Tuning cavity resonators. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. Sept. 27, 1962 [Sept. 29, 1961], No. 36651/62. Heading H1W. An adjustable high-frequency resonator comprises a sliding contact device in which the moving contacts are made of a material which grinds itself in to the surface over which it slides and are provided with a highly conductive coating of e.g. silver on surfaces other than the contact surface. The piston shown comprises inner and outer segments 4, 5 of carbon carried by resilient rods 2, 3 which press them into contact with the conductors 6, 7 of a coaxial line. The carbon contacts may contain distributed particles of copper or silver. The inner and outer segments are joined by strips 20 of copper. A modification is described in which a contact mounted on a pivoted arm moves over an arcuate strip forming the inner conductor of a coaxial resonator.
Patent GB-928764-A (GB)
Title: A method of and apparatus for bevelling, routing or trimming the edges of printing plates or blocks
IPC: B23Q1/54
Filed: 1959-10-29
Abstract: 928,764. Printing surfaces. M. VILLATA. Oct. 29, 1959 [Oct. 30, 1958], No. 36685/59. Class 100 (2). [Also in Groups XXII and XXIII] In a method of bevelling, routing, or trimming, the edges of printing blocks the block mounted on its base is caused to travel over a work table which can be inclined to the horizontal in accordance with the work to be done, the block being held against a guide which determines its path of travel in relation to the shaping tool. A device for performing the method comprises a work-table 13 pivoted to a base 1 and an arm 3 pivoted to a support 2 on the base 1. The arm 3 carries a chuck 5 to receive the routing or other tool 6, and a motor 4 which drives the chuck. The arm can be moved horizontally by means of a screw 10 and angularly about the support 2 by means of a screw 11. The table 13 has a guide 13<SP>1</SP> secured to the edge thereof adjacent to the tool 6. When the table and arm 3 have been appropriately adjusted a block 15 to be treated is placed on the table with the edge to be worked abutting the guide 13<SP>1</SP>. The block is then slid along the guide past the tool 6 which performs a routing, milling or other operation on one edge thereof. The table is arranged so that the longitudinal axis of the guide 13<SP>1</SP> is not perpendicular to the axis of the tool 6.
Patent GB-963895-A (GB)
Title: Improvements in or relating to electric switches
Inventor: HOWARTH ERIC
IPC: H01H1/42
Filed: 1960-10-28
Abstract: 963,895. Contact members for switches. M. & C. SWITCHGEAR Ltd. Oct. 2, 1961 [Oct. 28, 1960], No. 37048/60. Heading H2B. Rigid contact members 13 have springs 17 urging them together to bridge conductors 11, 12, and are disposed above and below the conductor 12 to which they are secured by a retaining pin 14 passing through the three parts 13, 12, 13, and located in a slot 10 open to the edge of conductor 12. The ends of members 13 mutually diverge convexly and are forced apart when conductor 11 is inserted therebetween at 20 to make contact. An additional securing pin 18 is mounted in a recess at the end of each of the contact members 13 and passes through a hole in conductor 12 (Fig. 4, not shown). The switch is dismantled by disengaging the ends of members 13 from pin 18 and sliding pin 14 out of slot 10. The Provisional Specification refers to arcuate movement of conductor 11.
Patent GB-969940-A (GB)
Title: Articulated cap for pit props
IPC: E21D23/06
Filed: 1962-10-01
Abstract: 969,940. Mine roof caps. SALZGITTER MASCHINEN A.G. Oct 1, 1962 [Oct. 19, 1961; Aug. 7, 1962], No. 37073/62. Heading E1E. An articulated cap for pit props, especially for dismantling frames, consists of front and back horizontal cap portions 1, 2 (Figs. 2 and 5), articulatedly connected together by parallel guides 3, 4 one above the other. The connecting means between the cap portions 1, 2 and the guides 3, 4 comprise hinges 5 in the form of combs through which coupling bolts 6 are inserted. The guide 3 may have a larger cross-section than the guide 4 to absorb the bending leads. The side walls of the guide 3 are in the form of aprons 7 over the guide 4. The guides 3, 4 may be locked together when the cap portions 1, 2 (Fig. 6) are extended by one bolt 12 or more pushed through apertures in the guides 3, 4. The coupling bolts 6 of one of the guides, such as 4, may be releasable to give a three-part cap (Fig. 7).
Patent GB-337645-A (GB)
Title: Improvements in or relating to devices for testing eggs
IPC: G01N33/08
Filed: 1929-12-04
Abstract: 337,645. Goldrei, S. B., and Goldrei, S., (trading as Goldrei, S. B.. )Dec. 4, 1929. Eggs, testing. - In a device for testing eggs, the rays from the light source are screened by a taper screening member mounted against a parabolic reflector, the light source and the working orifice of the said screen being so relatively positioned that the reflected rays converge at the working orifice. As shown, a lens d is interposed d between the reflector c and the screen f , the light source b being positioned at the focus of the reflector. Substantially all the direct and reflected rays from the light source b are converged at the orifice e against which the egg i is placed. The device is adjustably supported on an arm h.
Patent GB-623652-A (GB)
Title: Guiding devices for the sliding carriages of metal-cutting and like machine tools
IPC: B23Q1/40
Filed: 1946-12-20
Abstract: 623,652. Machine framings. BECH, J. Dec. 20, 1946, No. 37532. Convention date, Oct. 5, 1943. [Class 83 (iii)] [Also in Group XXXIV] The square-section guide rod 1 carrying the cutter head of a milling or like machine is slidable relative to a casing 2 which carries sets of rollers (e.g. the set comprising the two rollers 8 and the roller 12) bearing against opposite sides of the rod, the sets being arranged so that all four faces of the guide rod are engaged, and one or more of the rollers in each set being adjustable relative to the rod. Adjustable rollers 11, 12 are preferably fitted midway between the positions of pairs of fixed rollers 7, 8, as shown in Figure 2. An adjustable roller, such as 20, Fig. 3, may be mounted on ball bearings 19 on eccentric portions 18 of a bush 14 that can be rotated by a spindle 13 having a groove engaged by a U-shaped driver 15 fitted in holes in the bush. The Specification as open to inspection under Sect. 91 states that the guide rod may be of triangular or polygonal section. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1206978-A (GB)
Title: Process for the production of high-grade pig iron
IPC: C21C7/00
Filed: 1967-08-15
Abstract: 1,206,978. Producing iron. ESCHER WYSS Ltd. Aug.15, 1967 [Aug.25, 1966], No.37549/67. Heading C7D. High grade iron is produced from a steel which has been completely refined but not deoxidized by carburizing the latter to a carbon content of 2% to 4À5%. The steel may be produced by any conventional process.
Patent GB-513387-A (GB)
Title: Improvements in or relating to chairs or the like articles of furniture
IPC: A47C3/025
Filed: 1938-12-28
Abstract: 513,387. Resiliently-supported seats. ELLIOTT, N. C., and PRINGLE, G. Dec. 28, 1938, No. 37589. [Classes 52 (i) and 52 (ii)] In an arm-chair or the like, the seat frame 4 is pivoted at the front to the fixed frame, and supported by resilient means, e.g., springs 10, and the back 11 is pivotally connected at its lower end to the fixed frame near or below the level of the seating surface of the seat, and is adapted to yield backwardly against the action of resilient means such as springs 18. The movement of the seat and back are independerit. The side members of the back are hinged at 13, and bolts 14 pass through the sides members and through clearance holes in the relar members 19 of the fixed frame. Springs 17 and 18 are threaded on the bolts 14 and are retained by nuts and washers.
Patent GB-933370-A (GB)
Title: Control systems for change-speed power transmission mechanisms
IPC: B60K3/04
Filed: 1961-10-20
Abstract: 933,370. Hydrodynamic brakes. GENERAL MOTORS CORPORATION. Oct. 20, 1961 [Nov. 3, 1960], No. 37679/61. Class 103 (1). [Also in Groups XXIV, XXVI and XXXI] To prevent dangerous overspeeding of a gas turbine 9 on substantial load reduction due to downhill driving or failure or slow response of the turbine governor, an intermediate shaft 77 of a following change speed epicyclic gear is braked by an hydrodynamic brake 101 when the turbine reaches a predetermined speed above its normal, the brake being filled, so as to be operative, and emptied under the control of signal and control valves 351, 426 actuated by a Pitot tube governor 159 responsive to turbine speed. Gear arrangement.-A two-speed front epicyclic unit providing direct and overdrive in series with a three-speed and reverse rear epicyclic unit is used to provide four forward and two reverse speeds. The Pitot governor 159 comprises an annular can connected to the intermediate shaft 77, and a tube providing pressure in a governor line 216 proportional to intermediate shaft speed. Hydrodynamic brake operation.-When the gas turbine reaches a predetermined speed, pressure in the Pitot governor line 216 leftwardly shifts a spring biased spool 352 in the brake signal valve 351 to connect main line pressure in 194 through a line 354 to the brake control valve 426. In fourth gear, pressure in an overdrive supply line 341 acts on a piston 358 to increase the spring bias of the spool 352, thus leftward shift of the spool occurs at a higher intermediate shaft speed in front unit overdrive than in front unit direct drive, i.e. it occurs at the same engine speed. Pressure in the line 354 moves a spool 427 of the brake valve 426 downwards so that a brake outlet line 429 is connected to a cooler 434, the high brake outlet pressure closing a one-way valve 433, and a brake inlet line 438 is connected both to a feed line 218 and, to supply the brake with cooled oil, to a lubrication line 436 following the cooler.
Patent GB-1222915-A (GB)
Title: A process for the production of lactams
Inventor: IMMEL OTTO
IPC: C07D201/04
Filed: 1969-07-28
Abstract: 1,222,915. Lactams. FARBENFABRIKEN BAYER A.G. 28 July, 1969 [24 Aug., 1968], No. 37703/69. Heading C2C. [Also in Division B1] Lactams are prepared by gas-phase rearrangement, at 200-400 C., of cyclic ketoximes containing 5-12 ring C atoms, in presence of a mixture of either boron nitride and boric acid, or boron nitride and boron trioxide.
Patent GB-1007091-A (GB)
Title: Improvements in tantalum-base alloys
IPC: C22C27/02
Filed: 1964-09-16
Abstract: A tantalum alloy contains Re 1-5%, W in an amount such that W+Re is 8-16%, Ta the remainder.  Examples of the alloys were extruded, vacuum annealed at 1315  DEG C. or 1925  DEG C. for 1 hour, and rolled with intermediate anneals at 1315  DEG C.