baber/WOPTO huggingface dataset:
Patent GB-476643-A (GB)
Title: Improvements in and relating to folding tables and like articles of furniture
Filed: 1936-06-11
Abstract: 476,643. Fastenings. WILSON, E. L. June 11, 1936, Nos. 16320 and 19189. [Class 44] [Also in Group XIV] A folding-leg table or like article of furniture has fastening means for retaining the legs in the unfolded position comprising a metal blade or strip 18 provided with a slot 19 on one member adapted to be engaged by a metal tongue or peg 20 on the other member, the metal fittings also including at least one of a pair of co-operating stops to limit the unfolding movement at the position in which the tongue becomes engaged with the slot. As shown a plate 17 on the leg 13 is formed with the projection 20 which engages the slot 19 and also abuts against the edge of a plate 16 fixed to a transverse batten 15<1> to form the stop. The free end of the blade 18 is formed as a finger grip. A spring clip retains the legs in the folded position. Fig. 4 shows a modification in which a resilient blade 27 is fixed to a corner bracket 23 carrying the hinged leg 24 and a plate 25 fixed to the leg has a tongue 26 adapted to engage a slot 28 in the blade. A screw 30 on the leg abuts against the anchored part of the blade to form the stop, which is thus rendered adjustable. A short stiff arm 29 limits the release movement of the resilient blade to prevent breakage. To retain the leg in the folded position another tongue may be provided to engage the blade. The legs may be urged to the folded position by springs. The fastening means for the legs may be interconnected for simultaneous operation, e.g. by an eccentrically mounted coupling rod.
Patent GB-579236-A (GB)
Title: Improvements in methods of sealing electric conductors through vitreous walls
IPC: H01J5/32
Filed: 1942-11-18
Abstract: 579,236. Uniting metal to ceramic materials. GENERAL ELECTRIC CO., Ltd., NELSON, E. H. and WHITTEMORE, J. Nov. 18, 1942, No. 16342. [Class 36] A seal which is especially applicable for a H P M V electrical discharge device in which electric conductors pass through vitreous walls and comprise a plurality of thin strips 6 lying between a vitreous core 8 and a vitreous jacket 9 collapsed on to the strips and core is constructed with a conducting rod 1 having one end of reduced diameter whereby this reduced end may be passed through a hole 5 in a cruciform holder 3 to which the strips 6 are secured. The end of the rod is expanded to form a rivet, and the rod 1 is then inserted into the narrower part of a vitreous tube 9, and the strips 6 are forced against the wider part of the tube by means of the core 8. The wider part of the tube 9 is then heated and collapsed on to the strips 6 and the core 8, and part of the narrower part of tube 9 is collapsed on to the rod 1. The rod 1 is preferably of tungsten, and the rivet head and strips 6, which are of molybdenum, are cleansed by etching fluid before the sealing operation. Finally an electrode is attached to the rod 1, and a narrow part of the jacket 9 is sealed into an aperture in an envelope 12. In a modification, Fig. 5, the junction piece 3 is dispensed with and each of the strips 6a, 6b, 6c, 6d is formed with an aperture 5 for receiving the reduced end of the conducting rod 1. The strips 6 are welded to tags 7 which serve as external leads.
Patent GB-799236-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: ROGERS DOUGLAS CECIL
IPC: G05D16/06
Filed: 1956-05-28
Abstract: 799,236. Electron beam focussing apparatus; travelling wave tubes. STANDARD TELEPHONES & CABLES, Ltd. May 28,1956, No. 16429/56. Class 39(1). An electron beam focussing arrangement, in which the beam is converged from a cathode 1, Fig. 1, by electrostatic forces through an aperture in a magnet pole piece 4 and is then confined to a straight path by an axial magnetic field, a limited proportion of the magnetic fluid being allowed to penetrate the cathode, is characterized in that the pole piece has a planar surface about the aperture, this surface being positioned a prescribed distance (Z c ) from the cathode and the aperture is of a prescribed size (a) to satisfy the conditions that a substantially optimum proportion of the magnetic flux which links the electron paths in the magnetically confined regions of the electron beam penetrates the cathode and that at the cathode edge the magnetic lines of force 7 are substantially tangential to the electron beam profile. The optimum proportion is that which gives the beam minimum ripple and stated to be where Bo is the flux density of the field used to focus the beam and B b  is the flux density for Brillouin flow. Preferably to fulfill the two stated conditions the radius a of the aperture is related to the radius r c  of the cathode in the transverse plane through the cathode edge and to the angle # of convergence of the electron beam profile by the expression : and the axial distance Z c  of the pole piece surface from that cathode place is within 10 per cent of the following value : where ro is the mean radius of the electron beam. The magnetic field may be between 1À5 and 2À5 the strength required for Brillouin flow. The field may be either substantially uniform or reverse in direction at periodic intervals along the electron path. A practical embodiment in a travelling wave tube is described having the pole piece mounted externally of the envelope, the tube being provided with tunable input and output waveguides and air cooling means.
Patent GB-573225-A (GB)
Title: Improvements in mechanism for winding wire and the like
IPC: B21C47/10
Filed: 1943-10-11
Abstract: 573,225. Winding wire &c. SYNCRO MACHINE CO. Oct. 11, 1943, No. 16631. Convention date, Nov. 26, 1942. [Class 120 (ii)] In order that the damaged or unprocessed end of a length of wire &c. may be segregated, during winding, from the useable wire, a wire &c. winding machine comprises a rotatable mandril 2, a main spool 3 and an auxiliary spool 4 mounted thereon to receive the damaged or unprocessed wire ; a guide 11, 12 traversed to lay the wire &c. W on the main spool 3 in adjacent turns, a deflecting pulley 22 positioned opposite the flange of the main spool and adjacent the auxiliary spool and lying at an angle to the axis of the spools and means, e.g., a vertical shaft 17 having a handle 18 and journalled in a standard 16, for rotatably supporting the pulley 22 so as to guide the unprocessed wire &c. from the main spool to the auxiliary spool and for bodily shifting the pulley through an angle of 90‹ so as to throw the wire &c. from the pulley 22 after which the useable wire is wound on the main spool.
Patent GB-1452170-A (GB)
Title: Sensitized  silver halide photographic emulsions
IPC: G03C1/28
Filed: 1974-04-16
Abstract: 1452170 Supersensitized photographic silver halide emulsions FUJI PHOTO FILM CO Ltd 16 April 1974 [16 April 1973] 16638/74 Heading G2C A supersensitized photographic light-sensitive silver halide emulsion comprises (a) grains of lightsensitive silver halide a sufficient proportion of which have a crystal habit of a (100) surface so as to permit the emulsion to be supersensitized, the most frequently occurring diameter of the grains being 0À7 micron or less and the grains containing 5 mole % or less of iodide, (b) adsorbed on the grain surfaces a sensitizing amount of at least one dye which spectrally sensitizes the silver halide and which has a reduction potential more negative than -0À7 volt and (c) a supersensitizing amount of at least one azaindene having at least one nitrogen atom in the 6-membered ring of the indene nucleus. The iodide may be incorporated into the silver halide grains after their formation by means of the halide conversion method, and metallic ions such as Ru, Rh, Pd, Ir, Pt and Co may also be contained in the grains. The sensitizing dyes used are cyanines or merocyanines and the tetrazaindenes may be of the Formula:- where R is H or methyl and may be optionally substituted by chloro or carboxy in 5-position or methyl or hydroxymethyl in 2-position. Other azaindenes are 4-amino-6-methyl-1,3,3a,7-tetrazaindene and its 5-ethyl analogue, 4-hydroxy-6- methyl-1,3a,7-triazaindene, 2-methyl-4-hydroxy- 6-methyl-3,3a,7-triazaindene, 7-hydroxy-1,2,3,4,6- pentazaindenes substituted by amino or methyl in 5-position, 5,7-diamino-1,2,3,4,6-pentazaindene and 4-hydroxy-6-methyl-1,2,3,3a,7-pentazaindene. Additional supersensitizing compounds may be present.
Patent GB-220123-A (GB)
Title: Improvements in or connected with beam scales
IPC: G01G1/00
Filed: 1923-06-27
Abstract: 220,123. Avery, Ltd., W. & T., and Timson, W. June 27, 1923. Vibration, preventing and neutralizing. - An equal-armed balance is provided with a tubular arm 11 depending from the centre of the weighbeam 3 and connected at its lower end to a paddle 12 disposed within a box 14 containing oil or other liquid. The paddle may be angularly adjusted to vary its damping effect. Projecting from the arm 11 are two indicating pointers 16 which register against inclined charts 17. Rubber pads are disposed below the scale pans 7 to avoid shock to the knife-edges.
Patent GB-546172-A (GB)
Title: Improvements in cooling devices for engines
IPC: F28D9/00
Filed: 1940-11-20
Abstract: 546,172. Cooling radiators for aircraft and motor vehicles. AKTIEBOLAGET BOLINDER-MUNKTELL. Nov. 20, 1940, No. 16704. Convention date, Nov. 18, 1939. [Class 64 (iii)] A water or oil cooler for internal combustion engines consists of a pack of corrugated plates 14, Figs. 1, 3 with holes 16 at their ends, packing frames 27 extending around and between alternate plates and packing rings 24 around the holes between the packing frames to form alternate liquid and undulating air passages between the plates. Packs of plates are arranged around a fan 10, Fig. 2, and part of the liquid entering the transverse passage at the top of the plates of a pack from a junction 22 passes directly through the passage to an annular channel 39 connected to the inlet junction of a lower pack.
Patent GB-571885-A (GB)
Title: Improvements in or relating to valve tappets for internal combustion engines
IPC: F01L1/245
Filed: 1943-10-12
Abstract: 571,885. Valve gear. EATON MANUFACTURING CO. Oct. 12, 1943, No. 16710. Convention date, May 1, 1942. [Class 7 (vi)] In a self-adjusting tappet having an oil reservoir 9 at the closed end of a hollow tappet body 8 slidable and rotatable in the tappet guide 5, air &c, which might be trapped in the reservoir escapes through a passage 21 in the wall of the reservoir and so located that it is always masked by the tappet guide 5. Oil is fed through a channel 10 in the guide and an annular groove 11 on the tappet body 8 to the reservoir 9 and as the tappet body approaches the base circle of the operating cam 24, a spring 17, acting between a shoulder on an inner sliding member 14 and the end of a plunger 16 operatively connected to the valve rod 26, urges the tappet head 7 to maintain contact with the cam, the plunger itself being retracted to draw oil from the reservoir past a ball valve 18 to a chamber in front of the plunger. If the tappet is vertical or substantially so, trapped air &c. can escape between the body part 8 and inner member 14 as well as or instead of through the passage 21. Specification 466,161 is referred to.
Patent GB-416148-A (GB)
Title: Improvements in or relating to footholds
IPC: A43B3/16
Filed: 1933-06-12
Abstract: 416,148. Footholds. BAKER, C. W., 24, Silk Street, Chiswell Street, London. June 12, 1933, No. 16750. [Class 17 (ii).] Footholds of the kind described in Specification 303,721, [Class 17 (ii)], are made with the golosh part b provided with a non- reinforced upturned and inturned flanged portion c to fit over the welt of a shoe.
Patent GB-851885-A (GB)
Title: Improvements in or relating to drawing instruments
Inventor: FURNISS HARRY
IPC: B43L9/24
Filed: 1958-05-27
Abstract: 851,885. Drawing instruments. THORNTON Ltd., A. G. May 26, 1959 [May 27, 1958], No. 16769/58. Class 97(3) [Also in Group XXV] A drawing instrument has means for holding a scribing element such as a pencil, said means comprising a portion of the instrument which is bored out to receive the element, a screw which is accommodated in the complementary screwthreaded hole through the wall of said portion, said screw having a plain reduced-diameter portion at its inner end, and said hole having a smaller diameter at its outer end so that the screw cannot be removed from the hole. A compass has a leg 11, as shown. A pencil 14 is held in a bore hole 13 in a cylinder 12 by a screw 17. The part 17b of said screw is "plain" and is of smaller diameter than the part 17c. The screw is screwed into a hole in part 16 and the outer end of the cylinder 12 is deformed so as to reduce the diameter of this hole and prevent the screw from being removed. The thickness of the cylinder walls may be reduced locally to facilitate said deformation.
Patent GB-1176705-A (GB)
Title: Improvements in or relating to High Speed Switching Systems.
IPC: H01H9/54
Filed: 1967-04-12
Abstract: 1,176,705. Arcing preventing. GRANGER ASSOCIATES. 12 April, 1967 [20 May, 1966], No. 16800/67. Heading H1N. A high-speed switching system, e.g. for connecting a high power radio frequency source to either of two loads A, B, comprises a mechanical switch 13 having a movable contact arm 22 co-operating with contacts 23, 24 and operated when a #switching# signal is applied to a coil 21. The contacts are shunted by semiconductor switching devices which are controlled so as to provide low impedance paths when their associated contacts are being closed or opened. In the arrangement shown, reverseparallel diodes 28a, 28b and 29a, 29b are connected across the contacts 22, 23 and 22, 24 respectively. To change-over the switch 13 from the position shown, the switching signal is applied to the coil 21 and to the diodes 28a, 28b to forward bias them so that they conduct to provide a parallel path around the contacts 22, 23 to prevent arcing. Then, in sequence, the forward bias is removed from the diodes 28a, 28b and reverse bias is removed from the diodes 29a, 29b and applied to the diodes 28a, 28b. Forward bias is then applied to the diodes 29a, 29b so that these diodes provide a conducting path in parallel with the contacts 22, 24 to prevent arcing as they close. Blocking capacitors 31 and chokes 34 are provided. In modified arrangements, the pairs of diodes are replaced by controlled rectifiers, Fig. 15 (not shown), or are connected in series with auxiliary contacts, Fig. 16 (not shown).
Patent GB-375065-A (GB)
Title: Improvements relating to dynamo-electric generators, more particularly for speed indicators
IPC: G01P1/00
Filed: 1931-06-09
Abstract: 375,065. Electric speedometers and generators. THORNTON, A. A., 7,Essex Street, Strand, London.-(Weston Electrical Instrument Corporation ; 614, Frelinghuysen Avenue, Newark, New Jersey, U.S.A.) June 9, 1931, No. 16804. [Class 106 (iii).] A speed indicator of the type having an electric generator connected to a voltmeter has means for rendering the terminal voltage of the generator independent of changes in temperature. The magneto generator G has pivoted on the pin 2 a brush holder 1 having brushes 3, 4 that contact with a commutator 5, and the terminals 7, 8 of the generator are connected by means of a flexible cable 6 with the voltmeter V. The armature winding A of the generator may be of copper and has connected in series with it a resistance R1 with low resistance temperature coefficient, e.g. manganin, and the terminals 7, 8 of the generator have shunted across them a resistance R2 with high-resistance temperature coefficient, e.g. nickel or copper. The resistances R1, R2 are carried on a form or spool mounted between the terminals of the generator. Suggested value of the resistances &c. are given.
Patent GB-992225-A (GB)
Title: Improvements relating to the shaft seals of blowers
IPC: G21C15/24
Filed: 1964-04-23
Abstract: 992,225. Shaft seals. SULZER BROS. Ltd. April 23, 1964 [May 31, 1963], No. 16895/64 Heading F2B. [Also in Division G6] The impeller shaft 1 of a blower, particularly for circulating cooling gas, for example CO 2 , in a nuclear reactor plant, is sealed by means comprising a labyrinth seal 7, 8 and a liquid barrier 11 on the side of the labyrinth seal remote from the impeller 2, an intermediate chamber 10 in the labyrinth seal being connected by a conduit 14 to the suction side of the impeller and a further chamber 17 between the chamber 10 and the liquid barrier 11 being connected by a conduit 18 to the discharge side of the impeller. The barrier 11 is enclosed by two ring seals 12 and 13 and is fed with liquid, e.g. water, via a conduit 21 at a pressure higher than the gas pressure on the discharge side of the impeller. The conduit 14 includes a separator 15 and a filter 16 and the conduit 18 includes a cooler 20 and, if desired, a filter (not shown). In operation, cooled pressure gas is supplied through conduit 18 to the chamber 17 where it absorbs any water that has escaped from the barrier 11 and vaporized in the chamber 17 and any such gas which leaks past the labyrinth part 8 is returned, together with gas leaking past the labyrinth part 7 to the suction side of the impeller, the water vapour being separated out in the separator 15.
Patent GB-258687-A (GB)
Title: Improvements in and relating to the control of electric motors
IPC: H02P29/00
Filed: 1925-07-01
Abstract: 258,687. British Thomson-Houston Co., Ltd., and Given, R. D. July 1., 1925. Systems controlling travel for a fixed distance. -To control a working motor for regular intermittent running with regular intervals of rest, the motor circuit is intermittently closed and opened by an electromagnet switch 17 which is itself energized and de-energized at regular intervals by the combined action of two angularly oscillating switches 5, 6 driven by a pilot motor 2 and a step-by-step limit switch 1 driven by the main motor. At each successive step the pilot motor is reversed by pairs of forward and reverse contactors. The switches 5, 6 are mechanically related so that one moves with a given multiple of the velocity of the other, and are provided with adjustable plug-in contacts 15, 16 whereby the running distances are variable at will.
Patent GB-1433686-A (GB)
Title: Spring filled mattresses
IPC: A47C27/045
Filed: 1974-04-18
Abstract: 1433686 Spring mattresses H SINGER 18 April 1974 [8 April 1974] 16969/74 Heading A4M A mattress has a core of springs 2 and upper and lower foam plastics slabs 8, 8 secured directly to the end coils of the springs 2 by a bonding adhesive previously applied to the springs so that the end loops have simple superficial contact with the wholly planar adjacent surfaces of the slabs 8, 8'. An additional layer of padding 14 may be incorporated. The springs are inter-connected by helical wires anchored to border wires 6.
Patent GB-952680-A (GB)
Title: New colouration process
Inventor: MAWSON JACK FRANKLAND
Filed: 1961-05-10
Abstract: In a process wherein textile materials consisting wholly or partly of fibrous cellulose are dyed with a reactive dyestuff, contacted with a resin-finishing agent in an aqueous liquor, and then baked to cure the resin, a cationic dye-fixing agent which is free from anionic water-solubilising groups but contains one or more quaternary ammonium groups, is added to the aqueous liquor containing the resin-finishing agent.  The dyestuff may react with the cellulose or with the resin.  The dye-fixing agent may be a compound having an ammonium group and an aliphatic or cycloaliphatic residue of at least 10 carbon atoms; a condensation product of formaldehyde with dicyandiamide or urea and dicyandiamide in the presence of an amine or ammonium salt; the condensation product of an aldehyde with a hydroxyalkyl derivative of an amino or imino compound, in the presence of salts of nitrogen-containing inorganic or organic bases; a condensation product of a nitrogen-containing complex copper compound with a compound containing the group <FORM:0952680/D1-D2/1> and with an aldehyde; an acid salt of a condensate of cyanamide, dicyandiamide, or a guanidine, with a polyalkyleneimine; an arylene or alkylene biguanide; or a quarternary salt of a polymerized ethylenically unsaturated compound containing an amino group. Examples are given.
Patent GB-573660-A (GB)
Title: Improvements in and relating to the screening of electrical devices to prevent interference with wireless signals
IPC: H05K9/00
Filed: 1940-11-29
Abstract: 573,660. Screening electrical apparatus. DAVIS, J. J. Nov. 29, 1940, No. 17077. [Classes 38 (ii) and 38 (iv)] [Also in Group XXXVII] i Electrical apparatus which may set up radio interference, for example, high-tension distributers and ignition coils, is screened by means of a cap or envelope of low resistance conductivity rubber, that is, rubber moulded with a high percentage of graphite. In the form shown in Fig. 2, the screen is in two parts, a sleeve of conductivity rubber a with a lining d of pure rubber and a detachable dome-shaped cover b of conductivity rubber. The sleeve is clamped to the distributer head by a metal clamp e which is earthed. The sleeve is formed with orifices for the passage of the leads. Alternatively, the screen may be in one piece, of dome shape, with an orifice at the top for the passage of the leads.
Patent GB-790065-A (GB)
Title: Improvements in or relating to mountings for electron discharge tubes
Inventor: PLAISTOWE DONALD LEOPOLD
IPC: H01J29/76
Filed: 1955-06-14
Abstract: 790,065. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 19, 1956 [June 14, 1955], No. 17087/55. Class 39(1). An adjustable coil mounting assembly for a discharge tube 1 with two necks 2 comprises a pair of coil units 6 each encircling a neck of the tube and housed within a case member 7 having an external bearing surface, e.g., rings 14, moving on the bearings 13 of a support member comprising hinged portions 9, 10, each case member 7 having a gear or friction wheel 8 formed at one end and engaging a gear train 17, 19 and rotated through a universal joint 18 by a knob 15 and shaft 16 held in bearings slidably supported on the base plate 25. Each bearing and support member with its coil unit and gear drive is carried on a plate 23 which is moved about a pivot pin 24 by a screw shaft 29, its movement being limited by a pin and slot 26, 27 and constrained by spring 28. The shafts may project through holes in a cover which is of ferromagnetic material as is the base plate 25. The hinged portion 10 of the support member is swung up to remove the coil unit.
Patent GB-1175076-A (GB)
Title: Improved Apparatus for Measuring Force
Inventor: JACOBSON WALTER E
IPC: G01L19/04
Filed: 1967-04-14
Abstract: 1,175,076. Load cells. REVERE CORP. OF AMERICA. April 14, 1967, No.17144/67. Heading G1N. A load cell comprises a generally rectangular block 10, Fig.1 of elastic material having a central hole 26, arranged with its axis perpendicular to the direction of applied force F, and two arcuate recesses 32, 34 in its side faces 22, 24 parallel to and in the same plane as that of the hole 26. Strain gauges C 1  -C 4  and T 1 -T 4  are attached to the walls of the hole and the recesses to raise compression and tension of these walls respectively under load. The gauges are connected in a bridge, Fig.3 (not shown) two provide temperature coefficient resistors M 1 , M 2 , connected to the block 10, being connected in series with the bridge energizing supply to provide temperature compensated measurements . A further transverse hole 36 may also be provided in the block 10 to further concentrate the stress in the region of the strain gauges. The block is also provided with four symmetriccally arranged holes 38, 40, 42, 44 with slots 46, 48, 50, 52.