baber/WOPTO huggingface dataset:
Patent GB-879799-A (GB)
Title: Improvements in or relating to esterification of aromatic carboxylic acids
IPC: C07C69/76
Filed: 1958-05-19
Abstract: Esters are produced by reacting an aromatic carboxylic acid or anhydride with a primary aliphatic alcohol, at a temperature between 200 DEG  and 350 DEG C., in the presence of a catalytic amount of antimony oxide.  The process is particularly applicable to the production of dimethyl terephthalate, by heating terephthalic acid with methanol, in a two-stage reaction.  The first stage, is carried out at a temperature of 240 DEG C. and is continued for about 10 minutes.  The temperature of the reaction mixture is then rapidly increased to 300 DEG C., and the second step is then carried out for about 10 minutes.  Other acids which may be esterified by the process are:- benzoic, toluic, phthalic, isophthalic, trimesic, trimellitic, hemimellitic, prehnitic, mellitic, naphthoic, and diphenic.  The anhydrides of phthalic, trimellitic, hemimellitic, naphthalic and diphenic acids may also be employed in the reaction.  The following alcohols are specified:- ethanol, n-propanol, n-butanol, isobutyl, n-hexyl, n-octyl, lauryl, myristyl, cetyl, and the various C8-C13 alcohols obtained by the "Oxo synthesis".
Patent GB-966145-A (GB)
Title: Multiple seating device
IPC: A47C1/12
Filed: 1962-04-26
Abstract: 966,145. Fixing chairs in rows; stackable seats. J. HEANEY. July 26, 1963 [April 26, 1962], No.15988/62. Headings A4U and A4W. A multiple seating device comprises individual seats 10 and a support therefor consisting of legs 16, 17 pivotably interconnected by stretchers 15 and arrangeable arcuately, rectilinearly or sinuously, the seats after arrangement of the support, being detachably secured by screws 13 to angle irons 12 screwed to the stretchers. The legs each consist of a tubular stem 19 welded inside a tubular member 18 and the ends of the stretchers are formed as rings 20 having half the depth of a stretcher, slidably fitted over the stem and secured by a set screw 24. The stretchers are non-radial relative to the associated rings so that the stretchers associated with each leg can be pivoted to parallelism in telescoping the support for packaging in a chest or crate. A plastic cap 21 having an abutment ring 23 is press fitted within the top and coasters 31, or castors are provided. The seats are stackable, manufactured as plywood shells with foam rubber applied thereto, and are narrowed towards the front so that a circular arrangement is possible. In modifications the plastic cap is replaced by a threaded cap 25, a table replaces one of the seats or the stem is extended upwardly to support an arm rest.
Patent GB-136486-A (GB)
Title: Improvements relating to the Transverse Framing of Vessels.
Inventor: YARROW HAROLD EDGAR
IPC: B63B3/14
Filed: 1919-06-25
Abstract: 136,486. Yarrow, H. E. June 25, 1919. Frames.-The transverse frames D of shallow-dra.ught and other vessels are bent at, and away from, the bilges F, and are secured to the floor plate E, as shown, so as to leave a space H between the skin plating and the frames to facilitate drainage and repairs.
Patent GB-1493990-A (GB)
Title: Safety devices for the rollers of roll mills
IPC: B02C4/28
Filed: 1976-04-15
Abstract: 1493990 Roller mills IDDON BROS Ltd 15 April 1976 [18 April 1975] 16013/75 Heading B2A  A roller mill of the kind described in Specification 1117132 has an hydraulic capsule to prevent overload, the capsule comprising a cylinder component fixed to the first face of the front roll-bearing block of the mill and a piston fixed to the end of the adjusting screw by a collar and retaining plate The pressure setting is determined by an overload valve.
Patent GB-1137058-A (GB)
Title: Improvements in or relating to measuring the resonance frequency of resonant circuits
IPC: G01R27/28
Filed: 1966-04-12
Abstract: 1,137,058. Automatic frequency control systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. 12 April, 1966 [8 April, 1965], No. 16035/66. Heading H3A. The resonant frequency of a crystal K is measured by adjusting the frequency of an oscillator to the resonant frequency and measuring the frequency of the oscillator. The oscillator OSC is frequency modulated by a lowfrequency oscillator LFO at a modulation index of 0.1-0.2, and its output is fed to the crystal. The output of the crystal consists of the carrier and two sidebands, the modulation being such that other sidebands lie outside the passband of the crystal. If the carrier frequency is equal to the resonant frequency the two sidebands will have equal amplitudes; otherwise one sideband predominates and its amplitude is detected by a high-frequency detector HFD feeding a phase-sensitive detector FD the output of which is integrated (unit IN) to produce an error signal. This error signal is fed back to a varactor V in the oscillator to provide automatic frequency control and the frequency of the oscillator can be read from a meter M.
Patent GB-1102510-A (GB)
Title: Method of manufacturing fluoroberyllate glass
Inventor: KHALILEV VLADIMIR DEVLETOVICH
IPC: C03C3/32
Filed: 1967-04-07
Abstract: A fluoroberyllate glass is melted and fired under a protective atmosphere as is known and the casting is also carried out under a protective atmosphere, resulting in a more transparent product. The following composition is preferred-BeF2 54 : AlF3 10 : CaF2 12 : KF 24.  All mol. per cent.
Patent GB-679122-A (GB)
Title: Tractors, loading shovels and like machines
Inventor: HARROWELL DOUGLAS WILLIAM JAME
IPC: B62D49/00
Filed: 1949-06-16
Abstract: 679,122. Motor-vehicle axles. BRAY & CO., Ltd., W. E. June 16. 1950 [June 16, 1949], No. 16100/49. Class 79(iv) [Also in Group XXXII] In a tractor adapted for handling heavy loads, the steering axle F is supported from a central pivot 2 on the chassis, and is connected by radius rods 1 to spaced points on the driving axle housing on either side of the vehicle centre line. The pivot 2 is supported by a clevis 3 which is bolted on the chassis or the radiator E. The clevis comprises an I-section bar 3a which may be separated from a part 4 by cross-straps (not shown). The bar 3a and part 4 are spaced to provide a clearance for fore and aft movement of the axle F. Each thrust rod 1 has ears 11, Fig. 3, which are connected with lugs 6 and 14 carried by the front and rear axles respectively. A shank 7 of the lug 6 is journalled in sleeves 8 mounted in the axle F to provide a universal connection. The rods 1 may be telescopic. The invention may be applied to the loading shovel described in Specification 662,087, [Group XXI].
Patent GB-528838-A (GB)
Title: Improvements in resilient supports for mounting electronic valves or tubes in electric apparatus
IPC: H01R33/76
Filed: 1939-06-01
Abstract: 528,838. Thermionic valve holders. FABBRICA ITALIANA MAGNETI MARELLI. June 1, 1939, No. 16145. Convention date, June 3, 1938. [Class 38 (i)] A resilient support for a thermionic valve is provided by an insert 7 of rubber between the frame 1 and the socket-carrying member 8, the insert having faces 7<1> that bear against the frame 1 and the chassis 3 attached to it, and a channel formation 711 that fits over the edge of the member 8 and is spaced from the faces 7<1>. The part 7‹ that bridges between the channel 7" and the faces 71 is of small ,cross-section. The electric connections are made by light flexible coiled conductors 15 extending between. rods 13, 14 anchored respectively in the member 8 and the chassis 3. Movement of the supply conductors 16 attached to the rods 14 is not transmitted to the valve.
Patent GB-111478-A (GB)
Title: Improvements in or relating to Radiators for Motor Vehicles.
Inventor: JEZLER HUBERT
IPC: F28D1/04
Filed: 1917-11-07
Abstract: 111,478. Jezler, H. Nov. 14, 1916, [Convention date]. Straight tubes between headers.-In radiators of the kind having separately detachable sections or elements c between end tanks a, b, the sections are of such a shape and are so connected that when one or more are detached for repairs &c. the gap produced is filled up by turning one or more of the remaining sections about their connexions, so as to present an unbroken plane surface on one side, and consequently maintain an even draught of air between the sections. In the first form described, the sections comprise a number of tubes between end chambers, Fig. 6, the lower chamber being connected to the bottom tank by a screwed connexion d and the upper chamber h having a pin o engaging a recess pin the top tank a. The water flows into the top tank and through the hollow side frame c, Fig. 3, into a passage f in the bottom tank, and thence by an annular passage g to one set of tubes s, returning to the main part k of the tank b through another set of tubes t and a passage i. The normal positions of the sections c and their connexions o are shown in Fig. 3, the re-arranged positions when one section is removed being shown diagrammatically in Fig. 5, the plane face preferably being towards the fan. By a further rearrangement, the removal of more sections may be provided for. In a modification, Fig. 10, the sections c are connected to the bottom tank by a screwed connexion v, and to the top tank by a sliding piece u and screw union, in such a manner as to allow for expansion or axial adjustment, and the water flows directly from the top tank through the sections to the bottom tank. The sections may be arranged horizontally.
Patent GB-120604-A (GB)
Title: Improvements in Crutches for Invalids and Cripples.
Inventor: PENNINGTON FRANCES ANNIE
IPC: A61H3/02
Filed: 1917-11-09
Abstract: 120,604. Pennington, F. A., and Day, T. R. Nov. 9, 1917. Crutches.-Relates to pneumatic arm rests, and consists in joining the side of the inflatable bag internally to prevent change of shape, and also in superimposing several bags, the joints similarly resisting change of shape. The sides of the bag may be joined internally by a strap or straps of inelastic material. Fig. 4 shows superimposed bags b strengthened by inelastic pieces of fabric e at the joins. In another form, india-rubber bags are vulcanized together and to a covering of reinforced rubber fabric or canvas. Fig. 8 shows an adaptation to a crutch head. The wooden cross piece e has secured to it a flanged base-plate f. The ends g of the cover h are drawn down and secured to the base or cross-piece by angleplates i and fastenings. The cover sides are clamped by angle-plates i<1>, one flange of which engages slots in the cross piece. A second adaptation has the bags arranged with the compartments vertical. Specification 100,755 is referred to.
Patent GB-200996-A (GB)
Title: Improvements in and connected with the "elimination of 'overhearing' or 'cross talk'in telephone circuits"
IPC: H04B3/34
Filed: 1922-06-14
Abstract: 200,996. British Insulated & Helsby Cables, Ltd., Mercer, F., and Holttum, W. June 14, 1922. Drawings to Specification. Induction, preventing.-In order to eliminate cross-talk in a four-wire telephone cable, in each section between adjacent loading points, the capacities between the wires of one pair and the wires of the other pair are balanced, and in addition the earth capacities of the two wires of each pair are balanced. The condensers used are made of suitable standard capacities, and are sealed in metal containers connected to the sheath of the cable so that they are screened.
Patent GB-863685-A (GB)
Title: Improvements relating to helicopters
IPC: B64D1/22
Filed: 1959-05-13
Abstract: 863,685. Helicopters. COSTRUZIONI AERONAUTICHE GIOVANNI AGUSTA S.p.A. May 13, 1959 [March 27, 1959], No. 16456/59. Class 4. A helicopter constructed for use as a crane has a three-arm structure 5 secured to the roof of the cabin 1 for the attachment of the apex of the structure of a hoist 4 provided with a lifting cable 6 for a load 8 to be raised by the helicopter. The apex and hoist are positioned vertically in line with the centre of gravity of the aircraft and the floor of the cabin has an opening 7 for the passage of cable 6. A remote control device 3 is provided in cabin 1 whereby an operator may control the aircraft whilst observing the load 8 through opening 7. Specification 863,686 is referred to.
Patent GB-222200-A (GB)
Title: A hygienic hair comb
IPC: A45D24/04
Filed: 1923-06-26
Abstract: 222,200. Inman, H. June 26, 1923. Combs, hair.-A comb comprises two backings A<1>, B<1>, Fig. 4, hinged or pivoted together and having sets of teeth A, B respectively so disposed that the teeth of one set lie between and in the same plane as the teeth of the other set when the backings are closed together. The backing A<1> is cut away, as shown at A<2>, leaving end lugs A<3>, and the backing B' is cut away at the ends B<2> so as to leave a portion B<3> fitting between the lugs A<3>, and pins C extend through the lugs A<3> into the portion B<3>. The backings are recessed, as shown at A<4>, B<4>, Fig. 2, so that when they lie flat against each other both sets of teeth are in alignment. Clips may be provided to hold the backings closed.
Patent GB-1529765-A (GB)
Title: Bird feeding device
IPC: A01K39/014
Filed: 1977-04-19
Abstract: 1529765 Feeding birds S D M KING 19 April 1977 [23 April 1976] 16500/76 Heading AIM A device for feeding wild birds comprises a plastics food holder 50 mounted on a metal strip stem 12 connectable to a window sill 10 by a screw clamp 22. The holder 50 provides two troughs 62, 64 for food or water surrounded by a ridge 74 forming a perch. A second, similar, holder may be mounted on the stem and its spacing beneath holder 50 be such that it can only be used by small birds. Hooks, such as hook 80 on the stem, may support hanging food holders (not shown) for blue tits.
Patent GB-1489791-A (GB)
Title: Process for the manufacture of windshield wiper blades having a supporting structure formed as an integral element and wiper blades obtained by said process
IPC: B60S1/38
Filed: 1975-04-22
Abstract: 1489791 Windscreen wipers FISTER SAS DI BOSSI GIACOMO & CO 22 April 1975 [29 April 1974] 16502/75 Heading A4F A windscreen wiper blade comprises a rubber wiper element 4 fixed to a supporting structure pivoted to a connector (not shown) for a wiper arm, the supporting structure comprising parts, e.g. two parts 5, 6, connected to one another, to form an integral body, by ultrasonic welding. Each part 5, 6 is formed by injection moulding thermoplastic material and has a longitudinal channel closed at one end 8, the opposite end having a member 7 with a bore 2 therein. In assembling the blade the element 4 and a reinforcing metal strip 17 are inserted into the channels 9 whilst the parts 5, 6 are spaced apart as shown in Fig.6. The parts 5, 6 are then brought together to juxtapose faces 15 of the member 7, the faces 15 then being joined by ultrasonic welding. The aligned bores 2' receive a pivotal mounting of the wiper arm connector. The strip 17 is optional.
Patent GB-977716-A (GB)
Title: Improvements in or relating to electric template copying servo systems
Inventor: HERNDON LEE ROY
IPC: B23Q35/123
Filed: 1961-05-06
Abstract: 977, 716. Template-followers. PEGASUS LABORATORIES Inc. May 6, 1961, No. 16532/61. Heading G3N. In a copy-milling machine in which a probe follows a template, a template feed signal at 90 degrees to the error signal is derived from the error signal. The lower end of a vertical probe, Fig. 2 (not shown), conversally pivoted at the upper end, contacts the edge of a template. The cores of two differential transformers 22, 23 mounted at right angles to each other, are connected to the probe to detect x and y axis deflections respectively. Transformers 22, 23 are excited by sine waves 90 degrees out of phase from source 21 and the resulting modulated signals are demodulated at 26, 27 to provide D.C. signals across resistors 76, 80 and 77, 81 proportional to X and Y deflections. The modulated signals are also applied to a circuit 28, Fig. 5 (not shown) where they are added, and the resultant after amplification and squaring is separately demodulated with both signals from source 21 to provide two reference X and Y D.C. signals across resistors 31, 32. These resistors are centre-tapped to earth, and the negative going reference signals are applied through resistors 78, 79 to oppose the basic deflection signals so as to maintain the probe at a constant reference deflection. A portion of the resulting X and Y error signals is tapped off potential dividers 80, 81 and applied to X and Y axis control amplifiers 82, 83. A portion of the positive going Y reference signal from resistor 31 is also added to the X axis amplifier 82, and a portion of the negative going X reference signal from resistor 32 is added to the Y axis amplifier 83 to provide forward feed components. The amplifiers 82, 83 control hydraulic servomotors 86, 87 with velocity feed-back from tachometers 88, 89.
Patent GB-711496-A (GB)
Title: Improvements in or relating to molded abrasive disks and methods of making the same
IPC: B24D18/00
Filed: 1951-07-12
Abstract: 711,496. Abrasive tools. GARDNER MACHINE CO. July 12, 1951 [July 19, 1950; July 19, 1950; July 19, 1950], No. 16539/51. Class 60 [Also in Group V] An abrasive disc 20 for attachment to a supporting wheel 21, Fig. 3,comprises a metallic reinforcing mesh 29 to each side of which the axially-spaced, laterally-enlarged, portions of a plurality of fastening members are clamped with one of said portions in the plane of the mounting face 25 of the disc, and a body 28 of abrasive material moulded about the mesh. Each member 30 may comprise a nut 32 and a spring washer 36 that may engage a recess 38 in the shank 33 of the nut to clamp the wire mesh on both sides, the nut having a non-circular head 39 and its shank projecting through the mesh of the wire. Before placing the wire mesh 29 in a mould 220, Fig. 21, having holes 225 to locate fastening screws for the nuts 32, the latter may be clamped to the mesh by the washers 36. Alternatively, the nuts may be located in the mould by the screws before the mesh is applied. In a modification, the nut 32 may have external threads in order to replace the washer 36 by an outer nut, or a frustro-conical enlargement may be formed on the end of the shank 33 and forced between the strands of wire preferably after secured the nut to the mould. Various other modifications of the fastening members 30 are illustrated, according to which the head of the nut 32 may be on the opposite side of the wire mesh to that shown in Fig. 3, and the washer 36 made in various shapes, with or without projecting pieces passing through the mesh, and attached to the mesh by welding or to the shank 33 of the nut 32 by screw-threads, sweating or press fitting, or it may be associated with the shank by simple abutment.
Patent GB-336596-A (GB)
Title: Improvements in annealing furnaces
IPC: C03B25/06
Filed: 1929-04-15
Abstract: 336,596. Morton, W. A. April 15, 1929. Divided on 332,271. Idler rollers for endlessbelt conveyers; casings. - In an annealing-furnace, adapted particularly for the treatment of glassware, the endless conveyer belt 1 is supported on rollers 17, 17<a>, which are journaled in bearings 38 pivotally mounted bv means of stubs 41 in brackets 39 bolted to longitudinal channel-members 36, these members being anchored at one end only to permit expansion and contraction of the entire conveyer support. The upper members 36 are connected to the lower ones by side plates 37 and rest on fixed cast-iron shoes 45. The rollers 17, 17<a> are mounted in the swivel bearings 38 by means of soft steel shafts 43, Fig. 6, which project through bushes 42 and have hardened white iron journals 44 shrunk on to their ends. Specification 332,271 is referred to.
Patent GB-827981-A (GB)
Title: Improvements in or relating to oscillator circuit arrangements
IPC: H03B5/34
Filed: 1956-05-30
Abstract: 827,981. Automatic voltage control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 30, 1956 [June 2, 1955], No. 16737/56. Class 38 (4). [Also in Group XL (c)] An amplitude stabilized valve oscillator comprises a series tuned feed-back circuit connected to the grid for controlling the oscillation frequency and a variable impedance connected to the grid for controlling the oscillation amplitude, the variable impedance comprising two rectifiers connected in series between a source of reference voltage and a rectifier circuit coupled to the oscillator output, the junction of the two rectifiers being coupled to the grid of the valve. The Figure shows a valve 2 having in its anode circuit a choke 9 and a regenerative feed-back circuit comprising capacitors 14, 15, 16 and a piezo-electric crystal 1 series resonant at the oscillator frequency. The grid circuit also comprises two rectifiers 19, 20 one of which is connected to a source of voltage stabilized by a gas-filled valve 25 and the other of which is connected to a rectifier circuit 22, 24 coupled to the output circuit 8 of the oscillator. When the output from the rectifier circuit 22, 24 exceeds the reference voltage the rectifiers 19, 20 become conductive so reducing the input voltage applied to the control grid. The valve is biased by a D.C. voltage derived from a potentiometer 27 connected to the rectifier circuit so that if the oscillator fails the bias is reduced and the anode current of the valve decreases. This causes a relay 29 to operate a contact 30 in an alarm circuit 31. The valve may operate under Class A, B or C conditions.
Patent GB-372583-A (GB)
Title: Improvements in water-heating stoves or furnaces
IPC: F24H1/43
Filed: 1931-06-09
Abstract: 372,583. Boiler stoves. McCULLOUGH, S. J., 7, Alfred Street, Belfast. June 9, 1931, No. 16738. [Class 126.] In a boiler stove for supplying a hot-water or central heating system the air supply passes from a space 7 below the ashpit 6 to side passages which deliver it to the top of the fire-pot 3, the air then passing downwardly through the water-heating grate bars or tubes 4 to the ashpit and thence to the flue 10. In the stove shown, the fire-pot is formed by a water jacket 2, and the tubes 4 extend up the flue 10 ; the jacket and the tubes 4 may be connected or may form separate water heaters. A damper 12 allows an updraught to be used when starting the fire. In a modification the water jacket 2 is formed by a coiled tube.
Patent GB-423151-A (GB)
Title: Improvements in scaffolding couplings
IPC: E04G7/14
Filed: 1934-06-06
Abstract: 423,151. Scaffold clamps. BURTON, J., 49, Sandon Road, Edgbaston, Birmingham. June 6, 1934, No. 16787. [Class 20 (ii)] A scaffold clamp is provided with a single adjustable member which enables scaffolding members to be gripped by the clamp in two directions at right angles. The clamp comprises a pair of elongated jaws 1 of curved section for gripping one scaffold member, each jaw being provided with a curved-section lateral extension 5 adapted partially to enclose a second scaffolding member 6, a clamping member 9 loosely hinged on a pin 8 carried by a pair of lugs 7 disposed at one end of the jaws, and a clamping bolt 11 loosely hinged between another pair of lugs 7 disposed at the other end of the jaws. Adjustment of the nut 13 of the clamping bolt causes the jaws 2 to be rocked from the open position shown in Fig. 5, to the gripping position shown in Fig. 4, whereby both scaffolding members 4 and 6 are simultaneously gripped. The clamping bolt may be carried by the hinged cap, and screw into an aperture provided in the pivotal pin 8.
Patent GB-1392855-A (GB)
Title: Sley driving mechanism in a loom
Inventor: KUSTER H
IPC: D03D49/60
Filed: 1972-04-12
Abstract: 1392855 Beat-up motions ROSENFORS BRUK AB 12 April 1972 [14 Apr 1971] 16801/72 Heading DIE  A sley is operated by three pneumatic cylinders, one to apply an initial force to the sley to balance it and relieve its dead weight, one to apply an initial "kick" to start the sley moving and one to perform beat-up. In Fig 1 the weight of the sley 2 is balanced by a cylinder 6. In Fig 6 the beat-up is performed by a cylinder 24 and a toggle mechanism 19, 20 that is broken over centre alternate ways for alternate beat-ups and the initial kicks for commencing beat-up is given by another cylinder (Fig 7 not shown).