baber/WOPTO huggingface dataset:
Patent GB-1057511-A (GB)
Title: Parametric amplifier
Inventor: AITCHISON COLIN STUART
IPC: H03F7/04
Filed: 1965-11-04
Abstract: 1,057,511. Parametric amplifiers. MULLARD Ltd. Nov. 4, 1965, No. 46760/65. Heading H3B. A parametric amplifier in which the pump frequency is twice the signal frequency consists of three sections G1, G2, G3 of rectangular waveguide connected in series, propagation of the signal and pump frequencies in the dominant mode being restricted to the sections G1, G2 and G2, G3 respectively by elements included with a varactor diode in the centre section G2. The height of the centre section is less than the section G1 to which the signal frequency is applied. In one embodiment, Fig. 1 (not shown), in which G1 > G2 > G3 in respect of relative heights, propagation is restricted by “ wavelength (#p/4, #s/4) short-circuit sections L1, L2 spaced respectively by an even number of quarter wavelengths (e.g. #p/2, #s/2), from the diode. The “ wavelength sections L1, L2 give maximum voltage at the pump and signal frequencies at the diode as well as preventing forward transmission in other than an evanescent mode. In a modification, Fig. 3 (not shown), the “ wavelength sections L1, L2 are positioned adjacent the diode. In an alternative arrangement, Fig. 4, the “ wavelength section L2 is replaced by a matching section GM of waveguide of length #p/4 between G2 and G3. Because the section GM has a cut-off frequency higher than the signal frequency, propagation of the signal frequency into the pump frequency input waveguide G3 is prevented. In the Fig. 4 embodiment the relationship between the heights of G1 G2 and G3 respectively is H1 > H2 and H2 < H3.
Patent GB-1084437-A (GB)
Title: Improvements in or relating to optical systems of variable focal lengths
IPC: G02B15/14
Filed: 1964-11-18
Abstract: 1,084,437. Optical systems. ERNST LEITZ GESELLSCHAFT MIT BESCHR€NKTER HAFTUNG. Nov. 18, 1964 [Nov. 20, 1963], No.46877/64. Heading G2J. An optical system of variable focal length comprises a first movable positive member L 1  which in one end position has a magnification of substantially unity, i.e. its focal length is one quarter of the distance l between the object and image planes and is positioned midway between such planes, and a second movable positive member L 2  which in the corresponding end position is near to either the image or the object plane of the system, both members L 1 , L 2  being movable from their end positions towards one another to vary the focal length of the system. The members L 1 , L 2 , may be linearly displaceable with respect to one another, the resulting image plane moving three times through a fixed position, or one member may be linearly, and the other non- linearly displaceable, so that the image plane remains fixed. The second member L 2  may be formed from a pair of spaced members whose common principal planes are displaceable through either the image or object plane. Such systems may be used as an intermediate system between a microscope objective and an eye-piece or between two additional optical systems in a camera. Optical data are provided for two examples.
Patent GB-1450828-A (GB)
Title: Expanded flameproof material
IPC: C08L61/04
Filed: 1974-10-30
Abstract: 1450828 Laminates A COMINASSI and H LIEVREMONT 30 Oct 1974 [31 Oct 1973] 46972/74 Heading B5N [Also in Division C3] Laminates consist of an expanded flameproof mixture of 20-80% by wt. of phenol-formaldehyde resin binder and 20-80% by wt. in particulate form of phospho-gypsum (i.e. calcium sulphate made by the following reaction e.g. in plate form, with at least one layer of a fibrous material. In the examples square plates of the above expanded mixture are sandwiched between glass fibre mats.
Patent GB-1272568-A (GB)
Title: Improvements in welding torches and heads thereof
Inventor: HILL WILLIAM GEORGE
IPC: B23K9/028
Filed: 1968-10-07
Abstract: 1,272,568. Welding by fusion. FOSTER WHEELER JOHN BROWN BOILERS Ltd. 7 Oct., 1969 [7 Oct., 1968], No. 47468/68. Heading B3R. [Also in Division H5] A head 18 for an electric arc welding torch for rotation about a butt joint between tubes 14, 16 by a torch body 12 comprises an electrically insulating and heat resistant block 20, e.g. a ceramic such as boron nitride, with an electrode holder 24 mounted in a recess 22 in the block, the block having a bore 28 through which a non-consumable electrode 26 projects. Cooling water from an inlet 34 passes through a passage 32 in the holder 24 to an outlet 36. The holder 24 is made of metal and electricity is conducted to the electrode from a lead 38 connected to the inlet 34. Shielding gas is supplied to the electrode via an inlet 42, a passage 40 in the electrode holder, outlets 44 from the passage and then along a recess (46), Fig. 4 (not shown), in the block to the bore 28. The holder is retained in the block by lugs 50 fitting in recesses 52 in which they are retained by a pin 58. The head is attached to the torch body 12 by a bracket (70), Fig. 5 (not shown), which has arms (72) engaging in recesses (73) in the head, the arms being clamped together by lock nuts 76. The head is biased toward the tubes 14, 16 by a spring 80 and the distance of the electrode from the tubes is controlled by a roller 82. The electrode is held in position by a grub screw 30. To prevent cracking of the block a recess 59 is provided in the block to define a lip 60 around the bore 28.
Patent GB-1392568-A (GB)
Title: Automatic tape winding devices
IPC: G11B15/67
Filed: 1972-10-13
Abstract: 1392568 Threading record tapes MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 13 Oct 1972 [15 Oct 1971 16 June 1972] 47472/72 Heading G5R The leading end of a tape 2 follows a guide 15 to the contact point between the hub 4 (covered in friction material 6), of a take-up reel 3 and a spring-biased arm 11 which is pivoted outside the reel 3 and extends through an opening between the ends of a peripheral tape-guide member 16 lying between but not touching the reel flanges 5, 5<SP>1</SP>, the reel being driven so that the peripheral speed of the hub 4 is greater than the initial tape feeding speed and the tape is wound on to the hub, Fig. 5 (not shown). The end of a transparent leader tape may be detected photo-electrically, causing solenoid 21 to withdraw the arm 11. The guide member 16 may be bent at one end 16<SP>1</SP>, Fig. 8b.
Patent GB-1386894-A (GB)
Title: Method of producing an electrically heated sheet
IPC: H05B3/34
Filed: 1972-10-13
Abstract: 1386894 Securing conductors STATNI VYZKUMNY USTAF TEXTILNI 13 Oct 1972 47487/72 Heading H5H An electrically heated sheet is formed from flat strip conductors secured by sewing through the conductor to a non-conducting sheet such as a fibrous web, textile woven fabric or plastics foil. The element 2 may be secured between two non-conducting sheets 1 and/or on the surface thereof. The heated sheet may be formed into panels or enclosures and the flat strip conductors may be formed from overlapping conductive strips or tapes wound on formers in various configuration. The sewing may be performed by a stitch knitting machined on the fibrous web or woven fabric without use of a separately supplied binding thread.
Patent GB-1452847-A (GB)
Title: Data processing apparatus
IPC: G06F3/00
Filed: 1974-11-04
Abstract: 1452847 I/O device emulation INTERNATIONAL BUSINESS MACHINES CORP 4 Nov 1974 [26 Dec 1973] 47513/74 Heading G4A A data processing system is arranged to emulate a system including an I/O (target) device of a different personality to the I/O (host) device 40 actually connected in the system, whilst still allowing the host device 40 to be operated under control of a program specifically written for it. Programs written for a target device, e.g. a disc drive, can be run to operate a permanent or temporary replacement device, e.g. a higher performance disc drive, or a device of a different type, e.g. a disc drive may be operated with a program written for a printer so that the printer may be run at a later time after it has been restored to service. Two embodiments are described in the first of which a quasi I/O attachment 60 is arranged to provide the responses (including interrupt) on a bus 50 appropriate to target instructions executed in the CPU 20 and manifested as control signals on a bus 45. The quasi I/O attachment 60 is also arranged to recognize and check the validity of the target device address and the CPU is programmed to analyse the instructions for the target device to generate corresponding control signals on bus 45. In a second embodiment emulation takes place outside the CPU, the generation of control signals on bus 45 and the quasi attachment 60 being combined in an emulator, Fig. 5 (not shown), which performs appropriate translations between target and host instructions, status bytes, control fields and addresses and which passes instructions for the host device unchanged to that device.
Patent GB-1113908-A (GB)
Title: Improvements in or relating to wrist tabs
IPC: B42D5/04
Filed: 1966-10-24
Abstract: 1,113,908. Attaching articles to the person. R. F. BECKER. 24 Oct., 1966 [6 Dec., l965], No. 47713/66. Heading A3H. [Also in Division B8] A wrist band 30 carries an indicia bearing tab which has two pairs of legs 16 which are bent round the longitudinal edges of the band. The tab is made of a malleable material such as aluminium or plastics which is bendable to conform to the curvature of the band.
Patent GB-1143003-A (GB)
Title: Fluid pulse actuated reciprocable tools
Inventor: BICK DAVID EWART
IPC: B25D9/14
Filed: 1965-11-10
Abstract: 1,143,003. Percussive tools. DOWTY TECHNICAL DEVELOPMENTS Ltd. 29 Nov., 1966 [10 Nov., 1965], No. 47714/65. Heading B4C. A liquid-pressure actuated percussive tool' such as a road breaker, comprises a working piston 9 connected to a tool 3 and a recoil piston 23 connected to the working piston and adapted to compress liquid in a pressure chamber 18 during a working stroke in order to return the working piston, valve means 28 being provided for controlling communication between a working chamber 15 and the pressure chamber via a passage 27. Pressurized liquid is fed into the chamber 15 via an inlet 17 to act on the piston 9 and effect a working stroke. Soon after the start of the stroke a port 28 is closed so that the piston 23 compresses the liquid in the chamber 18 in order to effect the return stroke. Due to the compression of the liquid the latter leaks between the piston 23 and its cylinder 21 and is returned to the chamber 15 via a groove 24 and a passage 25. The loss of liquid in the chamber 18 is made up by liquid flowing from chamber 15 via a passage 27 and port 28. The working piston may, in addition to the compressed liquid, be returned by a spring.
Patent GB-986914-A (GB)
Title: Sack holder
Inventor: CRAWFORD ROBERT HENRY
IPC: B65D6/16
Filed: 1962-12-18
Abstract: 986,914. Sack-holders. ROBERT H. CRAWFORD & SON Ltd. Feb. 18, 1964 [Dec. 18, 1962], No. 47723/62. Heading B8C. A sack is held in position around a steel frame 1 by presser bars 7 carried by pairs of lever arms 6, each pair of arms being rigidly connected to a rod 3 which passes through holes 4 in two bracket arms 2 secured at an angle to a frame side. The presser bars 7 are encircled at each end by a rubber strip 8, and can swing downwards into and upwards out of frictional engagement with the adjacent frame side, so operable by handles 5 formed at the rod ends. A number of such sack holders may be mounted on a feed hopper 10. The weight of the sack and its contents tends to pull down the presser bars into tighter engagement with the sack.
Patent GB-1123030-A (GB)
Title: Hydraulic lifting unit
IPC: A47C3/30
Filed: 1965-11-12
Abstract: 1123030 Seats REINHARD HORNLEIN K G 12 Nov 1965 [14 Nov 1964 23 Dec 1964 28 Jan 1965 23 Mar 1965 24 Mar 1965] 48147/65 Index F2S 31 [Also in Division B8] A lifting unit, Fig.1, for adjusting the vertical height of a table for chair comprises a cylinder 1 with chambers 2, 3, 4. Chamber 2 contains gas under pressure and is bounded by a floating piston 7. Chambers 3 and 4 contain oil and are separated by a fixed wall 9. A guide 10 with a rod 11 is slidingly arranged in chamber 4. Connection between the chambers 3, 4 is through ports 12, 13 controlled by a slide valve 15 operated manually by a bar 21. In the position shown the chamber 3 is isolated from chamber 4 so that the unit is locked hydraulically. When the valve 15 is moved down so as to connect ports 12, 13 the gas in chamber 2 expands forcing the piston 7 down and transferring oil from chamber 3 to chamber 4, oil also passing from above the guide 10 to below it through a port 22, which may be a throttle port. So that chamber 4 can accommodate the additional oil the rod 11 is forced downwards. The guide 10 may have one or more one-way valves which permit rapid passage of oil during lowering. The chambers 2 and 3 may be separated by a solid or hollow ball 27, Fig.2 (not shown) of resilient material. As shown in Fig. 7 the chambers 2 and 3 may surround the chamber 4 as an outer cylinder. The chambers 2 and 3 may be larger in diameter than the chamber 4, Fig. 8 (not shown). Other types of valve may replace the slide valve 15 to control passage of oil from chamber 3 to chamber 4.
Patent GB-1133771-A (GB)
Title: Improvements in or relating to transcription arm and pivot assemblies for phonograph record reproducers
Inventor: PROFITTLICH FRANK PAUL
IPC: G11B3/14
Filed: 1965-11-13
Abstract: 1,133,771. Supporting gramophone pick-up arms. DECCA Ltd. 13 Feb., 1967 [13 Nov., 1965], No. 48290/65. Heading G5R. [Also in Division H2] Co-operating male and female bearing elements of a gramophone pick-up arm pivot are provided with co-operating contacts for making electrical connection to the pick-up over the desired range of movement. As shown, the arm 10 is fixed to an insulating member 20 carrying a female bearing element 15 pivoting on a post 17, the elements 15, 17 comprising sector-shaped conductors 21, 18 mounted on plastics bodies 22, 19 (Fig. 2). Alternatively, the female element may be a flat-sided pyramid sitting on, or receiving, a spherical end of the male bearing element, the latter comprising sector shaped conductors separated by thin layers of insulation. One or more contacts may be spring-loaded, and where the bearing elements are spherical, a contact may be provided, at the tip of the male part for co-operation with a contact on the female part, either of which contacts may be spring-loaded. The contacts may be of brass or copper and coated with platinum, gold or rhodium, to avoid tarnishing.
Patent GB-1534612-A (GB)
Title: Method of calibrating or checking dynomometers and apparatus for performing the method
IPC: G01L25/00
Filed: 1976-11-23
Abstract: 1534612 Calibrating dynamometers NI I KONSTRUKT INST ISPYTATEL MASHIN PRIBOROV I SREDSTV IZMERE MASS NIKIMP 23 Nov 1976 48812/76 Heading G1W An apparatus for calibrating a dynamometer 16 comprises two frames 2, 6 one of which is movable relative to the other to apply a force to the test dynamometer 16, a first means 9, 11 for applying via a master dynamometer 15 or by a set of standard weights, Fig. 2 (not shown), a test force to dynamometer 16, and second means 12, 14 for applying to the dynamometer 16 a force equal to the test force applied via the master dynamometer or by the standard weights while the master dynamometer is relieved or the standard weights removed, the first means being arranged to apply in a subsequent step further force to the dynamometer 16 via the master dynamometer or by the standard weights which is additive to the force applied by the second means.
Patent GB-1335685-A (GB)
Title: Antistatic polymer composition
Inventor: BRINDELL G D
IPC: C08L51/00
Filed: 1970-10-15
Abstract: 1335685 Anti-static polymer compositions UNIROYAL Inc 15 Oct 1970 [17 Oct 1969] 49011/70 Headings C3G C3P and C3R [Also in Divisions B2 and D1] Polymer compositions contain as anti-static agent a mixture of (1) an alkali metal C 1-20  carboxylate and (2) a polyol or polyether glycol of M.W. 62-5000. Typical of many exemplified carboxylates are potassium formate, propionate, octanoate, tartrate, lactate, trichloroacetate, cyanoacetate and thiodiglycolate. Typical polyhydric alcohols are glycerine, ethylene glycol, polyethylene glycol of M.W. 600 and polypropylene glycol of M.W. 400 or 3600. In examples, suitable anti-static mixtures are added to (1) aqueous compositions based on carboxylated butadiene/styrene copolymer (60% styrene) and also containing sodium pentachlorophenoxide, alkylated para-cresol, tetrapotassium pyrophosphate, calcium carbonate or whiting, and sodium polyacrylate; (2) a sulphur-cured composition based on a blend of butadiene/acrylonitrile copolymer and a graft copolymer of acrylonitrile-styrene/butadiene-styrene (the total blend containing 58% butadiene) and also containing zinc oxide, titanium dioxide and dibutoxyethoxy ethyl formal; (3) a sulphur-cured composition based on ethylene / propylene / ethylidene norbornene terpolymer and also containing complexed aluminium silicate, hydrogenated naphthenic oil, titanium dioxide, zinc oxide and stearic acid; and (4) an uncured blend of butadiene/acrylonitrile copolymer and a graft copolymer of acrylonitrile - styrene / butadiene - styrene (the total blend containing 18% butadiene). Other polymers which may form the base of the compositions are mentioned, including polyacetates, polyethers, phenol/formaldehyde copolymers, polyesters, polyamides and polysulphones.
Patent GB-1209163-A (GB)
Title: Switching regulating apparatus
IPC: G05B5/01
Filed: 1967-10-30
Abstract: 1,209,163. Automatic control. W.H. JOENS & CO. G.m.b.H. Oct.30, 1967 [Nov. 15, 1966], No.49286/67. Heading G3R. The pointer of an electrical meter responsive to the magnitude of a variable operates a vane to influence an inductance, forming part of an oscillator, which is also adjustable to select a desired value of the variable, the oscillator controlling a switching amplifier which corrects the variable and varies a resistor forming, with the resistance of the oscillator to its supply, a potential divider in the input circuit of the amplifier. As described, the pointer of an electro-mechanical instrument responsive to the magnitude of avariable e.g. with the aid of a thermocouple moves a vane relative to the coils of an oscillator 10. Oscillator 10 is supplied with D.C. through a transistor Ts1 and the output of the potential divider thus formed is applied to switching transistors Ts2 Ts3 so that a relay 12 is energized when the variable deviates and changes the oscillator current by more than a predetermined amount. The closing of contacts 14 then applies correction to the variable, while the closing of contacts 16 applies transient positive or negative feedback by varying the output of a D.C. bias source 18 relative to the output of a fixed bias source 20 so that the conductivity of transistor Tsl is varied.
Patent GB-1015008-A (GB)
Title: A process and apparatus for assembling together two parts
IPC: B23P19/08
Filed: 1963-12-13
Abstract: 1,015,008. Making locking-nuts; jointing by forging. EATON MANUFACTURING CO. Dec. 13, 1963 [Dec. 26, 1962], No. 49406/63. Headings B3A and B3H. [Also in Division F2 In the assembling together of parts such as nuts 36 and locking inserts 32, Fig. 4, the parts are transferred along axially spaced corresponding paths, moved axially into engagement and interlocked. Nylon inserts are fed from a vibratory bowl 54, Fig. 1, along a shoot 14, and hexagon nuts having conical skirts are fed from a vibratory bowl 55 down a shoot 15 having an inverting section 56. Nuts which are wrongly oriented are ejected from the top of the shoot 15 back into the bowl. At the bottom of shoot 14 the inserts 32 are engaged successively by the noses 28, Fig. 4, of spring-loaded pick-up units 13 detachably mounted on an inclined rotary carrier 57, Fig. 2, driven through gear-box 71 by an electric motor 69. The pick-up units press their inserts against a stationary plate 38, Fig. 2, whilst the carrier 57 is rotated. The nuts 36 are delivered to edge pockets 34, Fig. 17 (not shown) in a carrier plate 33 where they are supported on the plate 38 above their respective insert. At the assembly station plate 38 is cut away allowing the insert to be pressed into a lower recess in the nut, Fig. 4. An outer sleeve 19 is then raised by a stationary cam track 23 whereby three circumferentially spaced deforming tools 45 indent the nut at 46 to lock the insert therein. Finally the assembled nuts and inserts are discharged by a knock-out member 47, Fig. 3 (not shown), into a shoot 52, Fig. 1.
Patent GB-1237727-A (GB)
Title: Seat belt fastener
Inventor: MELLING FREDERICK JAMES
IPC: A44B11/25
Filed: 1968-10-19
Abstract: 1,237,727. Stud and socket fastenings. FORD MOTOR CO. Ltd. 19 Oct., 1968, No. 49689/68. Heading E2B. A seat belt fastener comprises a lap belt tongue 14 having a notched aperture 19 therein and diagonal belt tongue 15 having a neck portion 17 connecting an end portion 18 to a body portion 16, the end portion being insertable into or withdrawable from the aperture only if one edge of the neck portion is seated in a notch 20 of the aperture 19. In use the notches 20 are displaced approximately 90 degrees from shoulders 21 formed by the neck and end portions. (For Figure see next column)
Patent GB-1203416-A (GB)
Title: Improvements in or relating to film-flow packings
Inventor: BRITTON HAROLD GEORGE
IPC: F28F25/08
Filed: 1966-11-08
Abstract: 1,203,416. Laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 2 Nov., 1967 [8 Nov., 1966], No. 50029/66. Heading B5N. [Also in Divisions B1, C1 and F4] A film-flow packing for cooling towers and effluent and chemical treatment apparatus comprises a sheet of organic polymeric material (such as PVC, polymethyl methacrylate, polypropylene, polyethylene, polyvinylidene chloride, vinyl chloride/vinyl acetate copolymer, polystyrene, oxymethylene polymers and polyethylene terephthalate) having hollows and protuberances with the shape of a frustum of a pyramid or cone moulded therein with respect to a medial plane of the sheet. The sheets are attached together as by an ahdesive, with or without an intervening flat sheet or other spacing means, so that the top faces of the hollows and protuberances register with and are in face contact with similar faces on adjacent elements. The marginal portions of the sheets corresponding to the points of entry to and exit from the sheets have moulded ridges and troughs to provide uniform distribution of fluid over the sheets.
Patent GB-1199292-A (GB)
Title: Mounting Mechanism with Angular Adjustment
IPC: G02B7/00
Filed: 1967-11-03
Abstract: 1,199,292. Resilient mountings. WESTING- HOUSE ELECTRIC CORP. 3 Nov., 1967 [23 Nov., 1966], No. 50097/67. Heading F2S. [Also in Divisions. G2 and G3] A mounting comprises a housing 10 carrying a flexible metal diaphragm 11/which supports one end of an object holder 11, there being means for supporting and accurately positioning the other end of holder at three angularly spaced points, one of the supporting means being resilient. The object, e.g. a lens 12, to be supported, is held in a bore 11d of the holder by an elastomeric ring 13 backed by a threaded bushing 14. The yieldable supporting means comprises a flexible strut 22 extending from the holder 11 and resting on a ball bearing 23 which rests in a recess 24 of the housing 10. The ball bearing lies on the bisector of the angle between the axes of two adjusting screws 26 (27) (Fig. 1, not shown) which extend through the housing 10 at right angles and form the other two supporting means. Adjustment of these screws produces conical angular displacement of the holder 11 with respect to the housing 10. This arrangement is capable of withstanding shock loading.
Patent GB-1493136-A (GB)
Title: Practice device for use by percussion musicions
IPC: G10D13/02
Filed: 1975-03-21
Abstract: 1493136 Practice drum C MCDERMOTT and S L BOWERS 21 March 1975 [19 Nov 1974] 50155/74 Heading G5X A device for use in practice by a percussion musician comprises a flat oval metal sheet covered on one side with sheet rubber and on the other with foam rubber, a pair of legs extending from the other side being adapted to clip over the knee of a musician.