baber/WOPTO huggingface dataset:
Patent GB-909998-A (GB)
Title: A method of frequency synthesis
Inventor: KROUPA VENCESLAV
IPC: H03B21/04
Filed: 1959-04-01
Abstract: 909,998. Frequency synthesising circuits. TESLA, NARODNI PODNIK. April 1, 1959, No. 11043/59. Class 40 (6). In a digital frequency synthesising arrangement the output frequency 100fn of a quartz crystal oscillator is applied to an amplifier BA, from which the 10th and 100th subharmonics are produced by successive dividers D2, D1, and the 10th and 100th harmonics by multipliers M4, M5. Each of the basic frequency sources BA, D, M feeds a corresponding harmonic generator GH followed by a frequency-limiting low-pass filter LFP, a mixer 1S and a fixed frequency narrow band-pass filter BPF. The desired units value of the output frequency reckoned in kilocycles is determined by choosing the corresponding one of the output frequencies of the first local oscillator AO1 so as to select one of the 1 kc./s. harmonics from the range 9 to 19 kc./s. fed to the first mixer 1S1. The resulting output from the first intermediate frequency filter 1BPF1 is mixed with an interpolation oscillation 10 to provide intermediate output frequency values in a mixer 2S1. The desired tens value of the output frequency is determined by choosing the appropriate value of the second local oscillator A02 so that the second band-pass filter 1BPF2 selects one of the 10 kc./s. harmonics in the range 70-170 kc./s. fed to the second mixer 1S2. The output of the second intermediate frequency filter 1BPF2 is mixed with the frequency representing the units value in the second mixer 2S2, the appropriate output being selected by a filter 2BPF2 and fed to a mixer 3S2 where the component representing the first local oscillator frequency AO1 is removed so that the output frequency from the filter 3BPF2 does not contain a component representing the value of the first oscillator A01. The output from the filter 3BPF2 is mixed in the third mixer 2S3 with the frequency representing the hundreds digit obtained by selecting an appropriate one of the harmonics in the range 0.8 to 1.8 Mc/s. fed to the third mixer 1S3, and the second local oscillator frequency A02 is removed from the resulting component by a second mixer 3S3. Similarly, a component representing the thousand units of the desired output frequency is added by selecting one of the 1 Mc/s. harmonics in the range 8 to 18 Mc/s. whereafter the third and fourth local oscillator components are subtracted in subsequent mixers. The ranges of the harmonics fed to the mixers 1S are chosen to prevent spurious frequencies passing through the filters and the choice in the embodiment necessitates the subtraction of a 10 Mc/s. component in a mixer 4S so that the desired output frequency is obtained. With this arrangement, the desired output frequency is selected by setting the values of the local oscillators A0 and the interplation oscillator 10 and no adjustment of the filters is necessary.
Patent GB-242475-A (GB)
Title: Improvements in the refining of steel
IPC: C21C7/00
Filed: 1924-05-06
Abstract: 242,475. Kilby, J. N., and Spalton, A. H. May 6, 1924. Refining.-Steel, after it leaves the furnace, is poured into a container and refined therein by forming a complete envelope of refining medium comprising substances or a mixture or compositions of substances which are basic or neutral, said mixture &c. being applied as a lining to the container and also being added in powdered or molten form or both to the molten steel therein so as to form a complete envelope of the steel therein. The added composition may be of a different composition from the lining. In an example the lining consists of a mixture of 75 per cent of magnesite and 25 per cent of dolomite, and the added composition comprises one-third by weight of fluorspar, one-third of lime, one-sixth of silica and one-sixth of borax glass. According to one Provisional Specification, the purification may also be effected in a mould.
Patent GB-113509-A (GB)
IPC: B66B5/10
Abstract: 113,509. British Thomson - Houston Co., (General Electric Co.). March 6, 1917. Stopping automatically at end of run.-In a hoist operated by an electric motor, means are provided for limiting the travel in each direction and means whereby the hoist, having passed a limit, may be reversed to operate in the return direction but cannot be again reversed until it has returned to some point within the limits of travel. Track limit switches 11, 12 are operated by the buckets 9, 10 and another limit switch 8 is geared to the hoisting drums. Shortly before the limit of travel is reached, the contact 43 of the geared limit switch leaves its contact finger thereby causing the switch 28 to cut in the resistance 26 to decrease the motor speed. The bucket 9 will next open the track limit switch 11 to de-energize all the control circuits so that all the switches are opened and the brake is applied. In these circumstances the circuits for both directions of travel are broken at the switch 11 and for the last direction of travel at the geared limit switch 8. The motor can only be operated to return within the limits of travel by throwing the switch 24 to the right, and after it is within the limits it can be controlled by the master controller. The switch 25 acts in a similar fashion to the switch 24 for the other direction of motion.
Patent GB-1530574-A (GB)
Title: Heave compensating apparatus
IPC: B63B27/36
Filed: 1977-03-17
Abstract: 1530574 Boring earth &c SOC NATIONALE ELF AQUITAINE (PRODUCTION) 17 March 1977 [18 March 1976] 11358/77 Heading E1F [Also in Division B8] A heave compensating system 108, for use in lowering a load 109, e.g. a drill string, from a floating vessel 101 onto the sea bed, includes passive compensating means comprising at least one single acting piston and cylinder 114 connected to an accumulator 134, and active compensating means comprising at least one double acting piston and cylinder 117 arranged in parallel with the passive piston and cylinder 114 and supplied with hydraulic fluid by control means 125 in response to variations in the position of the active piston rod with respect to its cylinder 117 and the velocity of the floating vessel 101 with respect to the sea bed so as to maintain the position of the load constant. The control means 125 may also respond to variations in the load on hook 122.
Patent GB-434747-A (GB)
Title: Improvements in yarn winding and like machines
IPC: B65H57/00
Filed: 1934-04-16
Abstract: 434,747. Yarn winding-machines &c. ARUNDEL, COULTHARD & CO., Ltd., Sovereign Works, Stockport, and CHARLTON, J. A., Bank of England Chambers, Tib Lane, and HUGHES, V. A. B., 2, Pall Mall, both in Manchester, (executors of Higginson, J.). April 16, 1934, No. 11388. [Class 120 (ii)] In a drum winding machine in which the yarn is wound into a conical cheese upon a conical tube by a reciprocating guide, the yarn passes over a guide rod or rail b adjacent to and parallel with the path of the reciprocating guide and under a deflector rod c set at an angle with respect to the rod b so that the yarn is tensioned by the latter to an increasing extent as it is traversed towards the small diameter of the cone being wound. As shown the rod c is resiliently supported at its end where it deflects the yarn to the maximum extent and does not touch the yarn as it passes on to the large diameter of the cone ; the rod may be held in a rubber bushing k in a bracket h or may be a piece of glass tubing held on a split fibre or rubber bushing expanded by a screw engaging the bracket.
Patent GB-1061543-A (GB)
Title: Manufacture of monofluoroacetyl fluoride
IPC: C07C51/62
Filed: 1965-03-18
Abstract: Monofluoroacetyl fluoride is made by contacting acetyl fluoride with fluorine, in a molar ratio of at least 3:1, respectively, in the gaseous phase at 20-300 DEG  C. and in the absence of any inert diluent gas.  Preferred reaction conditions comprise using 5-8 moles acetyl fluoride per mole fluorine and reaction temperatures in the range 60-120 DEG  C.  The reaction may be effected in the presence of a catalyst, e.g. copper.  The monofluoroacetyl fluoride may be freed from the hydrogen fluoride by-product by passing the products over sodium fluoride pellets or by washing with fluorosulphonic acid.  The acetyl fluoride starting material can be made treating acetic acid anhydride with hydrogen or potassium fluoride or acetyl chloride with potassium fluoride.  Examples are provided.
Patent GB-278611-A (GB)
Title: A high output turning tool
IPC: B23B27/18
Filed: 1927-04-29
Abstract: 278,611. Siemens - Schuckertwerke Ges., and Drescher, C. W. April 29, 1927. Tools; tool-holders.-A lathe tool 1 has a series of cutting edges 3 constituting a regular polygon the cutting edges being separated from an inner recessed part 6 by a narrow lip 5. The cutter is hard soldered to a conical pin 7 which is secured to a holder 2 by screwing, welding, soldering or clamping. The pin 7 may be of polygonal cross section.
Patent GB-140918-A (GB)
Title: Improved construction of apparatus for sharpening the knives of guillotine cutting machines
IPC: B24B3/38
Filed: 1919-05-09
Abstract: 140,918. Brown, A. V. May 9, 1919. Machine cutters, sharpening in situ.-Apparatus for sharpening the knives of guillotine cutting-machines comprises two disks 1, carrying grinding-disks 18, loosely journaled on stub-axles 2 mounted in a rocking-bar 5 which forms one side of a frame 6; the bar is pivotally mounted in the ends of the frame, and the opposite side of this is formed with a slide or skate edge 7. To the rocking-bar is pivotally connected a screwed rod 9 having a hooked end 12 engaging a lug 13 on, or a hole in, the bar, the other end of the rod being positioned in a slotted extension 10 of the frame, and provision for adjustment and locking thereof being made by means of nuts 11. On the rod 9 is screwed an arm 14 rotatably carrying a handle 15. In operation, the grinding-disks are set to the required inclination by meane of the screwed rod 9 and the nuts 11, and the apparatus is then moved longitudinally of the table 8 by means of the handle, the disks being rotated by the contact of tyres 16 thereon with the table, and their flat faces grinding the blade 19.
Patent GB-1105623-A (GB)
Title: Improvements in or relating to light-weight plasters or cement mortar compositions
Inventor: RENTON KENNETH HARDING
IPC: C04B28/02
Filed: 1965-03-19
Abstract: A mortar composition comprises a dry mix of a heat-expanded lightweight aggregate having a density of 3 to 20 lb./cu. ft., filler, hydrated lime, cement, cellulose ether additive, and an added surface-active agent, the filler and the hydrated lime being in the ratio of approx 4:1 by wt., and the amount of cellulose ether additive being less than 0.1% by wt. of the composition. The lighteight aggregate may be vermiculite and/or perlite of density about 7 lb./cu. ft. in which case the weight ratio of cement to the aggregate should be about 2.5:1. The surface-active agent is preferably an aerating agent, e.g. a hydrolysed protein in spray dried form, an alkyl aryl sulphonate or an ethylene oxyalkyl phenol. The cement is preferably Portland and the filler ground limestone or whiting.  The dry mix is mixed with water before use as a lightweight plaster or cement.
Patent GB-623336-A (GB)
Title: Improved method and apparatus for high vacuum coating
IPC: C23C14/26
Filed: 1947-05-01
Abstract: 623,336. Electric furnaces. DISTILLATION PRODUCTS, Inc. May 1, 1947, No. 11684. Convention date, Sept. 7, 1946. Drawings to Specification. [Class 39(iii)] A high vacuum vaporisation apparatus for aluminium &c. has, as an electrically heated filament, an elongated carbon member the centre portion of which is of smaller cross-sectional area than the ends and is formed with a cavity in which the aluminium is vaporised by the heat resulting from the increased resistivity at this point. U.S.A. Specification 2,013,755 is referred to.
Patent GB-700590-A (GB)
Title: Refrigerator cabinet structure including receptacle and mounting therefor
IPC: F25D23/04
Filed: 1952-05-08
Abstract: 700,590. Refrigerators. MOTOR PRODUCTS CORPORATION. May 8, 1952 [July 16, 1951], No. 11685/52. Class 29 The inner panel 15 of a refrigerator cabinet is bowed' in- 'wardly to form a recess 21 having secured therein at each side a hollow support 38 formed with a vertical channel 49 and a top ledge 50 to receive the appropriately formed ends 26 of a storage container 22 having a hinged lid 27, the container thus being vertically removable from its supports. The upper edges of the inner and outer walls of the container have notches 29 and the container is spaced from panel 15 to allow air circulation through and around the container. The lid 27 has hinge pins journalled in lugs 34 having apertures 35 and lead-in slots 36 to allow removal of the lid. The bottom of each channel 49 has a cam surface 51 to urge the container forward to align the front surfaces of the container and of the supports 38.
Patent GB-669355-A (GB)
Title: Hydrogen altimeter
IPC: G01L21/30
Filed: 1949-05-03
Abstract: 669,355. Measuring pressure. BENDIX AVIATION CORPORATION. May 3, 1949. [Oct. 27, 1948] No. 11797/49. Class 40 (i). [Also in Groups XXXVI and XL (a)] A portion 1 of an evacuated envelope 13 is made of palladium or some other metal of the platinum group so that when heated by means of a coil 4, the palladium permits hydrogen to pass therethrough into and out of the envelope. The hydrogen pressure within the envelope is indicated by a meter 2C which measures the hydrogen ion flow tc the negative anode 16. When the device is used as an altimeter the hydrogen pressure varies downwardly from 0.08 m.m. of mercury.
Patent GB-1028395-A (GB)
Title: Improvements in or relating to titanium anode plating baskets
Inventor: LAW MALCOLM JOHN
IPC: C25D17/10
Filed: 1964-03-20
Abstract: <PICT:1028395/C6-C7/1> A titanium anode plating basket 10 has a titanium rod, bar or like member 13 electrically connected to and preferably integral with the suspension hook 14 and extending within the basket so as to be surrounded by plating metal e.g. nickel pellets.  The member 13 is preferably secured to the basket base 11. The basket may be of elliptical, rectangular, square or circular cross-sectional shape. Two or more rods, bars or like members may be symmetrically or regularly arranged along the vertical or major basket axis (with elliptical cross-sectional shape) and connected to one or more suspension hooks.  The basket wall may be of mesh, perforated and/or partly non-perforated.
Patent GB-385824-A (GB)
Title: Improvements in or relating to cable splicing machines
IPC: H01R43/00
Filed: 1932-04-25
Abstract: 385,824. Cable joints. QUANTE, W., 353, Uellendahlerstrasse, Elberfeld, Wuppertal, Germany. April 25, 1932, No. 11900. Convention date, April 27, 1931. Addition to 376,593. [Class 38 (i).] A machine for splicing cables by performing successive operations of gripping, stripping, twisting, severing and releasing the wires as described in the parent Specification, has the operations of opening and closing the gripping jaws performed by separate levers. The jaws 7, 10, Fig. 2, are mounted on a spindle on a sliding carriage 21. The jaws are forced together by a spring 9, the movable jaw having an arm 8 carrying a roller by which it is opened by means of a bar 6 common to all the clamps and moved by a lever 5. The jaws are held open by a detent roller 14, Fig. 3, that engages a projection on the bar 6 and is released by means of a lever 12, allowing the jaws to spring together. The blade 17 in the jaw 7 is adjustable by a screw 19 so that it cuts through the insulation only, the movement of the jaw being limited by a stop 16. The insulation is stripped by drawing back the carriage 21 and the jaws are then rotated by gearing to splice the wires.
Patent GB-1201533-A (GB)
Title: Gearbox selector mechanism
Inventor: KOVARI LASZLO
IPC: F16H61/26
Filed: 1968-03-12
Abstract: 1,201,533. Change-speed control. FORD MOTOR CO. Ltd. 12 March, 1968, No. 11900/68. Heading F2D. In a motor vehicle gear shift linkage wherein movement of a gear shift lever (not shown) is transmitted through an axially slidable and rotatable rod 3 to an axially slidable and rotatable selector rod 1 which is perpendicular to the rod 3, a connecting bar 7 of a U-shaped bracket 12 fast with the selector rod 1 engages a recess 9 in a sleeve 11 fast with the rod 3 so that axial movement of the rod 3 rotates the selector rod 1 whilst rotation of the rod 3 acts through levers 15 integral with the sleeve 11 and engaged between flanges 5 on the bracket 12 to slide the selector rod 1 axially.
Patent GB-139363-A (GB)
Title: Improvements in and connected with shaft bearings
IPC: F16C23/02
Filed: 1919-05-12
Abstract: 139,363. Hall, W., and Wellesley, R. May 12, 1919. No Patent granted (Sealing fee not paid). Channels in bearings. - In a bearing for crank shafts &c. having an eccentric ad. justing-ring b of wedge section, lubricant is supplied through passages h', h<2>, h<3>, which, when not in alinement, are connected by grooves a', b<2>.
Patent GB-460286-A (GB)
Title: An improved convertible table
IPC: A47B1/05
Filed: 1935-04-18
Abstract: 460,286. Tables. ARNOLD, C. GOSSWEILER-. April 18, 1935, No. 11938. Void. Convention date, April 19,1934. [Class 52 (iii)] Draw-out tables are of circular outline when extended. Specifications 143,396, [Class 52 (iii)], 342,526, 359,864, and 382,428 are referred to.
Patent GB-768806-A (GB)
Title: Improvements in or relating to stencil duplicators
IPC: B65H3/44
Filed: 1955-04-25
Abstract: 768,806. Stencilling apparatus; feeding sheets. GEHA-WERKE GES. April 25, 1955 [April 24, 1954], No. 11941/55. Classes 100(1) and 100(2) Set-off, preventing. In a stencil duplicator, a sheet to be printed is fed from a stack on a first table along a short horizontal path to the printing elements, and a set-off or waste sheet is fed from a stack on a second table below the first at a higher speed and along a longer and steeply rising path, so that the sheets come together in front of or directly behind the printing elements, whereby printed sheets and waste sheets are interleaved to prevent transfer of ink from a printed sheet to the back of the following printed sheet. The printed sheets 8, Fig. 1, and waste sheets 9 are stacked on tables 25, 48 guided on rails 24 so as to rise under automatic control according to the height of the stacks. The tables are manually retractable to replace the stacks. The table 48 is arrested before the end of the downward movement of the table 25 by rails 51, which causes members 49 and pins 50 tobe disengaged to allow retraction. The sheets 8 are fed by rollers 20, having freewheel devices so as to roll on the non- operative strokes, carried on arms 18, and driven from the stencil printing cylinder 3 through a crank 15 and rocking arm 17. The sheets pass between feed rollers 21, 22 to the printing cylinder 3 and impresion cylinder 6 and thence to a tray 10. The sheets 9 are fed by similar rollers 44 carried on arms 38, and pass up through a passage 45 to join the sheets 8 in front' of the printing elements 3, 6. The rollers 44, Figs. 1 and 2 are driven from the cylinder 3 through a chain 27, chain wheel 28, coupling 30, friction discs 33, friction disc 34, shaft 36 rotating in a tube 37, chain 41 and shaft 43. Depression of a hand-lever 47, when waste sheets are not desired to be fed, pushes in a bolt 32 to disengage the coupling 30, and rotates the tube 37 to raise the arms 38 and roller 44 clear of the sheets. The discs 33 have edge recesses 46 to interrupt the feed when they are aligned with the disc 34, whereby the feeds of the two kinds of sheets are synchronized. A coupling 13 can be disengaged to stop both-feeds. In the tray 10, the sheets are straightened by striking against a stop. Alternatively, the sheets can come together just behind the printing elements. In another form, the table 48 is stationary, and the opening of the passage 45 is wide enough to admit sheets from various levels as the stack diminishes.
Patent GB-655722-A (GB)
Title: Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform
Inventor: BULL ERIC WILLIAM
IPC: H03K4/16
Filed: 1948-05-01
Abstract: 655,722. Sawtooth generating circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. May 1, 1948, No. 11961. [Class 40 (vi)] In a circuit of the type in which a sawtooth wave is generated by charging a capacitor and discharging it rapidly through a pentode valve which is rendered alternately conducting and non-conducting by intercoupling a pair of its electrodes other than the suppressor grid, for example, by a transformer or a valve, the suppressor grid is connected through a resistor to a positive voltage, and a further capacitor is arranged to be charged through the resistor and discharged through the valve. The valve shown operates as a blocking oscillator and the sawtooth wave is generated by charging and discharging the capacitor 12. The suppressor grid is connected to H.T. through a resistor 14 and to earth through a capacitor 12. A further sawtooth wave is thus generated at the suppressor grid, which grid is thereby maintained positive during the flyback increasing the rate of discharge of the main capacitor.
Patent GB-1253632-A (GB)
Title: Polyamide compositions
IPC: C08G59/32
Filed: 1970-03-13
Abstract: 1,253,632. Polyamide/polyepoxide compositions. TORAY INDUSTRIES Inc. 13 March, 1970 [19 March, 1969], No. 12121/70. Headings C3B and C3R. Thermoplastic linear polyamides are reacted with polyepoxides, containing a single terminal epoxy group and 1 to 3 vinylene epoxy groups, in the molten state. Suitable polyamides are poly-#-caprolactam, poly-#-laurolactam, polyhexamethylene adipamide, polyhexamethylene sebacamide and polyhexamethylene dodecamide. Suitable polyepoxides are vinylcyclohexene diepoxide, epoxydicyclopentylglycidyl ether, 3,4-epoxycyclohexylglycidyl ether, 1,4- hexadiene diepoxide, 1,3,6-octatriene triepoxide and 2,4,6 - tris - (2,3 - epoxymethyl) phenyl glycidyl ether. From 10-300 milliequivalents of epoxy groups may be used per kg. of polyamide.
Patent GB-752683-A (GB)
Title: Improvements in or relating to loose-leaf binders
IPC: B42F11/02
Filed: 1954-04-27
Abstract: 752,683. Filing papers. CHAPERON, L. A., and CHAPERON. P. April 27, 1954 [Sept. 21, 1953], No. 12219/54. Class 146(1) A loose leaf binder for documents, pamphlets 4 ... 4<SP>111</SP> or the like comprises covers 1, 2 joined by a spine 3 and straps or bands 5, 5<SP>1</SP> of suitable deformable material adapted to be permanently secured inside the covers at one end a and have their other end b, b<SP>1</SP> free and formed with a set of relatively close-spaced projection means or holes 6,6<SP>1</SP> to co-operate with securing means 7, 7<SP>1</SP> and 8. As shown, the securing means comprises tubular members 7, 7<SP>1</SP> secured to the cover 2 which engage through appropriate holes 6,6<SP>1</SP> and are secured by a spindle 8, having a bent portion 9 for operation. Pins 10, 10<SP>1</SP> are used to secure the documents 4 to the straps 5, 5<SP>1</SP> and each pin has a loop for the strap and an extension 11 to pass between the folds of the documents 4. The tubular members may be replaced by hooks or hooks may be provided on the straps 5, 5<SP>1</SP> and anchoring catches on the cover 2.