baber/WOPTO huggingface dataset:
Patent GB-917492-A (GB)
Title: Improvements relating to sockets and couplings for electron tubes and to electron tubes in combination with such sockets or couplings
IPC: H01R33/76
Filed: 1959-08-24
Abstract: 917,492. Velocity modulated tubes. EITELMcCULLOUGH Inc. Aug. 24, 1959 [Sept. 10, 1958], No. 28850/59. Class 39 (1). [Also in Group XXXVI] An electron gun for use in a klystron tube, contains a plurality of radially disposed heating elements 31 supported by inner and outer conducting posts 28 and 29. Specification 917,493 is referred to.
Patent GB-1471193-A (GB)
Title: Bis-triazinylamino-stilbene derivatives
IPC: C07C39/18
Filed: 1974-06-28
Abstract: 1471193 Bis(triazinylamino)-stilbenes SANDOZ Ltd 28 June 1974 [2 July 1973] 28939/74 Addition to 1313469 Heading C2C [Also in Division D1] Novel compounds have the Formula I: <SP>i</SP>n which the R 1 's are the same and signify hydrogen or methyl, the R 2 's are the same and signify hydrogen; C 1-6  alkyl; cyclohexyl, unsubstituted or substituted by up to three C 1-6  alkyl radicals; or benzyl, unsubstituted or substituted by up to two substituents selected from halogen, C 1-6  alkoxy and C 1-6  alkyl, and the M's, which may be the same or different, each signify hydrogen or a non-chromophoric cation. The compounds of Formula I are obtained by reacting a cyanuric halide with the three corresponding amines of Formulµ II, III and IV in any order and preferably in the stoichiometric molar ratio. The compounds of Formula I are optical brighteners for cellulosic substrates (e.g. cotton, paper).
Patent GB-339390-A (GB)
Title: Improvements in or relating to web roll supporting and handling mechanisms for printing and other machines
IPC: B65H16/06
Filed: 1929-09-24
Abstract: 339,390. Goss Printing Press Co., (Assignees of Lang, H.). April 22, 1929, [Convention date]. Feeding and registering webs.-In a web-roll supporting mechanism for printing or other machines in which rotatable members engage the ends of the axial orifice in the roll, the members are mounted on carriers each of which is mounted on a number of spaced-apart supports. The carriers are independently adjustable on the supports to receive rolls of different widths and are also adjustable together for side register of the web. A reserve roll is similarly mounted in proximity to the active roll and hoists are pro- 'vided to raise the rolls into position to be engaged by the members. The rolls are mounted on members 38, 57, Fig. 3, rotatably mounted in bosses 34, 51 of carriers comprising pairs of arms 33, 36 and 50, 54 mounted by long sleeves 32, 35 and 49, 53 on spaced-apart supporting rods 17, 23, 101, 104 carried in brackets 7 - - 10 on the side frames 1. The carriers are independently adjustable on the rods in accordance with the width and required lateral position of the rolls and are secured to the rods after adjustment of set-screws 85, 86. Endwise adjustment of the supports 17, 101 in their brackets 7, 8, for side register of the web may be effected by screws 87 rotatably mounted in brackets 88 and threaded into the ends of the rods. The roll-engaging members 57 are axially movable to engage and release the rolls. For this purpose, each member 57 is provided with a groove 77 engaged by pins 81 in the forked end 78 of a hand-lever. This member 57 is also provided with a brake drum 59 engaged by brake shoes on levers 69, 70, Fig. 1, pivoted together and slidable on a spindle 71 secured to the boss 51. The upper ends of the levers 69, 70 are connected by a link 74 for hand-adjustment of the brake pressure, but the brake may be automatically adjusted in the manner described in Specification 318,132. In inserting the rolls in the apparatus, they are placed on hoists 111 having concave roll-supporting surfaces 112 and mounted between guides 113, 114. The ends of the hoist are engaged by bails 117 connected to cables 122 wound on drums 123 fixed to cross shafts 124 which are provided with worm wheels 136 engaged bv worms 137 loose on a shaft 138 which may be driven by a motor 150 through gearing 148, 147. Clutches 141, 159, operable by hand-levers 146, 160, are provided to connect the worms with the shaft 138 for raising the rolls into position to be engaged by the members 57, 38.
Patent GB-1335514-A (GB)
Title: Annular field optical imaging system
IPC: G02B13/00
Filed: 1972-06-21
Abstract: 1335514 Annular field corrected lens PERKIN-ELMER CORP 21 June 1972 [21 June 1971] 29139/72 Heading G2J At least two optical elements are combined in a coaxial relationship and optically corrected to produce an optically corrected annular field which is utilised by screening off the rest of the lens field. Two spaced slits may be formed in the screen to give stereoscopic images.
Patent GB-253422-A (GB)
Title: Endless driving cord for spindles
IPC: F16G9/00
Filed: 1925-11-19
Abstract: 253,422. Knoll, H. W. Nov. 19, 1925. Rope fastenings.-The ends of a spindle driving cord a are united by a separate double thread d which is passed through eyes b, c at the cord ends and intertwined with one of the cord ends. As shown the free ends of a double thread d, Fig. 3, are joined by a sheath e, the cord being passed through the eyes b, c through itself, and then through the last windings of the cord end c. After being pulled tight, the sheathed end is cut off. In a modification the cord is looped through the eye c, Fig. 6, before the sheath e is applied. The double thread is then passed through the eyes b, c and secured to the cord end b after being again passed through the eye b. In a further modification, the cord has a double eye c, c<1>, Fig. 9, at one end. The thread d is looped through one eye c before applying the sheath e. The double thread is then passed successively through the eyes c<1>, b, c, c<1> and then intertwined with the cord at the end c, c<1> and pulled tightly.
Patent GB-1114426-A (GB)
Title: Process for the manufacture of l-(-)-ª-(3,4-dihydroxy-phenyl)-ª-methyl-alanine
IPC: A61K31/195
Filed: 1965-07-09
Abstract: L - (-) - b  - (3,4 - Dihydroxyphenyl) - a  - methylalanine (" L-a -methyl-DOPA ") is made by splitting a benzyl methyl malonic monoester of the Formula II <FORM:1114426/C2/1> in which R is CH3 and R1 is CH3, C4H9n or benzyl and, if R1 is CH3, R may also be a benzyl or allyl radical, into its antipodes by means of an optically active base and then (A) converting the D compound of Formula II obtained into an optically inactive symmetrical di-ester by esterification with an alcohol R1OH and then converting into the inactive starting material of Formula II by hydrolysing one ester group, and (B) converting the L-compound of Formula II into the desired L-a -methyl-DOPA by (a) converting into an L-isocyanate <FORM:1114426/C2/2> (in which R1 is the same as R but cannot be allyl) and thence into an amino compound <FORM:1114426/C2/3> wherein R2 is a hydrogen atom or an acyl or carbalkoxy radical and splitting off the etherifying radicals R1, the esterifying radical R1 and any N-acyl or N-carbalkoxy group by hydrolysis or, in the case when R1 is benzyl, by hydrogenation and hydrolysis; or (b) when R is an allyl radical, hydrogenating to convert the allyl groups to n-propyl groups, converting the product by known methods, e.g. via the azide, isocyanate and carbamic ester, into an amine of the formula <FORM:1114426/C2/4> in which R3 is hydrogen or CH3 and splitting off the propyl groups, together with the methyl group R3 if present and any N-acyl or N-carbalkoxy group present, by the action of strong hydrohalic acids; or (c) when R is an allyl radical, converting into the amino compound <FORM:1114426/C2/5> and treating this by (i) reacting with a hydrohalic acid, or (ii) hydrogenating and reacting with a strong hydrohalic acid, or (iii) splitting off one allyl group together with any esterifying methyl group or N-acyl or N-carbalkoxy group by reaction with an alkali-metal alkoxide and either treating with a hydrohalic acid or hydrogenating and treating with a hydrohalic acid to remove the second allyl group.  Symmetrical di-esters of the formula <FORM:1114426/C2/6> used for the preparation of the mono-ester starting material II are made by condensing a malonic di-ester of the formula CH2(COOR1)2 with 3,4-dihydroxybenzaldehyde or its methyl ethers and hydrogenating and C-methylating the resulting 3,4-dihydroxybenzylidene malonic acid di-ester or corresponding methylated compound. The corresponding 3,4-di-allyl or 3,4-dibenzyl ethers are obtained by allylation or benzylation of the 3,4-dihydroxy benzylmalonic di-esters and the products may, if desired, be re-esterified thus, for example, converting a di-methyl ester into a di-benzyl or di-n-butyl ester.
Patent GB-658111-A (GB)
Title: Improvements in and relating to selective sideband transmission and reception systems
IPC: H04B1/68
Filed: 1948-11-11
Abstract: 658,111. Automatic tuning correction. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 11, 1948, No. 29341. Convention date, Nov. 12, 1947. [Class 38 (iv)] [Also in Group XL (c)] A communication system provides simul - taneous transmission of two signals which produce two sets of sidebands on different sides of a carrier wave, and reception of the resulting composite signal with apparatus which separates the two signals (see Group XL (c)). Fig. 1 shows the basic detector circuit, an unmodulated signal source A, of much greater amplitude than the carrier of signal source B but having the same frequency and phase, being connected through capacitor 3 to the anodes of the diodes 1, 2 and signal source B comprising the modulated carrier, being supplied to the cathode of diode 1 via circuit 10 resonant to the carrier frequency. Resistors 7 and 8 are of equal value, and capacitor 9 has a low impedance to the carrier but a high impedance to audio frequencies. With only source A connected no output appears on the lead 11 but with source B also connected a positive potential appears at 11. If source B has the same frequency as A but is 180 degrees out of phase a negative potential appears at the output, and if the difference is 90 degrees the output is zero. In Fig. 2, two similar detector circuits 1, 2 and 1<SP>1</SP>, 21 are interconnected, the locally generated signal source A being of the same frequency but 90 degrees out of phase with the carrier at B, and applied to the anodes of diodes 1, 2 and through a 90 degrees phase shift network 12 to the anodes of diodes 11, 2<SP>1</SP>, the modulated carrier B being supplied to the cathodes of diodes 1, 1<SP>1</SP>. The unidirectional potential at terminal 11 is a function of the phase angle between the signal from source A and the corresponding component of source B, and is taken via a low-pass filter 14, 15, which permits only gradual change if potential on conductor 16, and through a device 13 which corrects the frequency and maintains the 90 degrees phase difference between sources A and B. In Fig. 6 the source A is an oscillator comprising valve 96 and resonant circuit 97, the output being applied direct to the anodes of diodes 1, 2 and through a tuned transformer 107, 108, providing 90 degrees phase shift, to the anodes of diodes 11, 21. In the source B the I.F. amplifier 35 is coupled to a cathode follower valve 128 whose output is supplied to the cathodes of diodes 1, 11, and the two audio frequency outputs from the detector circuit are taken from terminals 11, 11<SP>1</SP>. The slow variations of potential on conductor 16 due to changes in the phase of source A with respect to source B are supplied to the grid of a reactance valve 113 whose anode is coupled to the frequency determining circuit 97 of the oscillator.
Patent GB-492794-A (GB)
Title: Improvements in optical devices for photographic purposes
IPC: G02B3/08
Filed: 1937-10-28
Abstract: 492,794. Lens attachments for photographic objectives. GANCE, A., and ANGENIEUX, P. Oct. 28, 1937, No. 29415. Convention date, July 5. [Class 98 (ii)] The invention comprises a lens device made up of adjacent elements 6, 7, 8 of different focal lengths. When placed in front of the lens 1 of a photographic camera with focal plane 2, it enables objects 3, 4, 5 at different distances to be sharply focused at the same time. The elements 6, 7, 8 may be convergent or divergent.
Patent GB-750521-A (GB)
Title: Improvements in and relating to the conversion of iron to steel
IPC: C21C5/34
Filed: 1953-10-23
Abstract: In a basic Bessemer method of converting iron into steel having a nitrogen content lower than that obtained by blowing with atmospheric air, the temperature of the blast is maintained above 225 DEG C. throughout the conversion, and for at least half the total blowing time the blowing is effected with a mixture of oxygen and steam at a temperature of 250 DEG -350 DEG C.  Preferably, the ratio, by volume, of oxygen to steam in the blast is between 1 of oxygen to 1,5 of steam and 1,5 of oxygen to 1 of steam.  The blast may also contain combustion gases the nitrogen content of which is such that the final blast contains less than 5 per cent nitrogen and such gases may be used for preheating the steam.
Patent GB-1036655-A (GB)
Title: Stopping device for vehicles
IPC: B60T3/00
Filed: 1964-07-21
Abstract: 1,036,655. Skid shoe brakes. W. E. SOCKETT. June 3, 1965 [July 21, 1964], No. 29427/64. Heading F2E. A skid shoe attachment for emergency stopping of a vehicle comprises a skid shoe engageable with the ground and carrying a plate 12 engageable with the tyre of a rear wheel of the vehicle, and which is pivoted by a pin-and-slot or equivalent connection 9 to a rod 3 which is slidable in a cylinder mounted on the vehicle and which is acted on by a compression spring 6 to apply the shoe, a catch 5 being engageable with a collar 23 on the rod to normally hold the shoe in a raised position, and a cable 25 passing to winch means for raising the shoe after use. The rod 3 may slide directly in a cylinder 4 attached to the vehicle (Fig. 1, not shown) or may slide in an intermediate cylinder 31 containing a compression spring 32, the cylinder 31 being in turn slidable in the cylinder 4 and acted on by the spring 6. The cylinder 4 may be either curved, as shown, or straight and the plate 12 may be directly secured to the shoe but, as shown, is preferably carried by an arm 11 pivoted to the shoe and guided by pins 16 on the rod, compression springs 15 being located between the rod and the opposite ends of the arm. The two catches 5 associated with a pair of shoes on opposite sides of the vehicle are connected by cable to a common turnbuckle 18 (Fig. 1, not shown) which is connected by a further cable to a release handle 21 in the driver's cab. The raising cables 25 pass to separate drums operated by a brace 30 which when inserted into a ratchet wheel 27 causes a pawl to cooperate with the latter during winding, the brace being removed when the appropriate catch 5 is re-engaged. In the simplified arrangement of (Fig. 3, not shown) a common catch 61 engageable with a notch 62 in a slide block 58 retains both shoes 50 in raised position, a lever 64 being provided for raising the shoes, which are connected to the block 58 by cables 57. Instead of coil springs, hairpin type springs 41 (Fig. 2, not shown) may be used. The shoes may have replaceable sole plates (Fig. 5, not shown).
Patent GB-1093610-A (GB)
Title: Ignition system for internal combustion engines
IPC: F02P3/08
Filed: 1966-06-30
Abstract: 1,093,610. Ignition systems. R. DIENER and J. LEUPPI. June 30, 1966 [June 30, 1965], No. 29492/66. Heading F1B. A control pulse is fed to the control electrode of a switching diode 14 when the make-and-break contacts 26, 27 open, the control pulse rendering the switching diode conductive so that a pulse is produced in the ignition transformer, the make- and-break circuit containing a barrier device 32 to prevent any flow of current through the primary winding of a pulse transmitter during a period of contact between the make-and-break contacts which period is not less than the period of contact before one rebounds from the other, thus preventing any control pulse from being produced as a result of opening of the make-and-break contacts as a result of a rebound. As shown when the ignition switch 2 is closed, the oscillator 3 is started and capacitor 13 is charged up. When the contacts 26, 27 open a pulse is produced in the winding 21', which is fed to the control electrode of the switching diode 14 which conducts so that the capacitor 13 delivers current to the primary winding 15 to produce the spark. During the short period when the contacts 26 and 27 touch one another before rebound the capacitor 22 acting as a delay capacitor cannot be charged to the voltage required to drive current through the Zener diode 24. In a modification a transistor is included in the primary circuit of the pulse transmitter.
Patent GB-406412-A (GB)
Title: Improvements in or relating to the insulation of windings for high frequency electric furnaces
IPC: H05B6/36
Filed: 1932-10-24
Abstract: 406,412. Electric induction furnaces. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and MORRIS, G. G., c/o General Electric Co., Witton, Birmingham. Oct. 24, 1932, No. 29682. [Class 39 (iii).] Adjacent turns of the winding of a high frequency furnace are spaced apart by numbers of small insulators engaging surfaces of the winding shaped in such a way that the insulators are positioned thereby. The insulators may be glass or porcelain beads. In Fig. 1 beads 3 are arranged in depressions or grooves 2 formed in the hollow turns 1. In Fig. 2 two rows of beads 6 are arranged in corresponding helical grooves 5 in the windings 4. One surface only of the winding may be grooved, the beads having flat surfaces for co-operating with the flat surface of the winding.
Patent GB-1363973-A (GB)
Title: Methods for the manufacture of flexible bags and bags made thereby
IPC: B65D88/16
Filed: 1972-06-23
Abstract: 1363973 Flexible tanks A LABARONNE 23 June 1972 [24 June 1971 16 March 1972] 29696/72 Headings B8K and B8D A flexible bag is made from a sheet 1 of heat or high-frequency weldable plastics material by folding and welding the sheet into a tube, folding and welding extension flaps 3 of one side (6) on to the other side 5 with insulating strip (7) between the sides 5 and (6) in the regions of the welds, cutting off the corners obliquely to enable removal of the strips (7), welding together the flaps 2 and side (6) in the corner regions (11), forming holes (12) in the regions (11) and sandwiching each region (11) between two plates 13 having holes (12) for bolts (14). Handles 15 having holes for the bolts 14 may be provided at the corner regions (11). The bag may comprise two casings 101, 110, the inner casing 110 being chemically and physically inert with regard to hydrocarbons and corrosive products and the outer casing 101 being reinforced. The inner and outer casings are both made as described above but the corners of the outer casing are not welded and the plates 13 reinforce the corners of both casings. The double-walled tank is filled or emptied through a rigid plastics neck 115 which passes through an aperture in the outer casing 101 and is secured to the casings 101 and 110 in the vicinity of their apertures by screws 119 and flanges 118 and 120.
Patent GB-282024-A (GB)
Title: Improvements in vacuum brakes
IPC: B60T13/46
Filed: 1927-11-07
Abstract: 282,024. Servo Frein Dewandre Soc. Anon., (Assignees of Bouvard, P. A.). Dec. 9, 1926, [Convention date]. Fluid-pressure.-A vacuum braking apparatus in which the braking power is exerted by a flexible diaphragm comprises a single power chamber one part of the wall of which is formed by a flexible diaphragm a connected to the brake rodding and the other part of which is rigid and comprises two passages one of which contains an atmospheric valve which is moved towards the position of closure when the brake pedal is actuated and the other of which is in communication with the source of vaccum. The two passages are controlled by two valves acting one on the other, the atmospheric valve i being adapted to be closed gradually against the opposition of a spring u when the brake operating pedal is actuated. The part e is composed o,f two opposed hemispheres, the larger carrying the hemispherical flexible diaphragm a connected to a lever q of the brake rodding pivoted at o on lugs carried on the body e. The smaller hemisphere carries a flexible diaphragm b, which is the suction valve, and upon which is secured a valve seating k and the valve i which normally maintains the power chamber in communication with the atmosphere. The connection to a source of vacuum, such as an engine suction pipe, comprises a nozzle f and a clamping screw h and is shut off from the interior of the apparatus by the diaphragm b which is held against the interior of the body by the vacuum. A lever r connected to the brake pedal and pivoted at t on lugs carried bv the body e is provided with a forked arm which actuates a compensating spring v regulated by the nuts u. When the pedal is operated the valve i is closed and the diaphragm b is raised connecting the engine suction pipe to the interior of the apparatus. The action of atmospheric pressure on the diaphragm b, compressing the spring v tends to close the diaphragm against its seating and graduate the braking. Beyond a certain amplitude of movement a lug r<1> on the lever r is adapted to contact with a lug s<1> on a lever s pivoted at t and connected by a rod n to the lever q of the brake rodding. The diaphragms a, b are held on the body e by rings d, c and are made of rubber, canvas treated with rubber or leather. A metallic gauze member x is provided over the member k.
Patent GB-756023-A (GB)
Title: Improvements in and relating to gas pressure operated servo devices
Inventor: NUNN GEORGE WILLIAM
IPC: B64D17/56
Filed: 1951-12-19
Abstract: 756,023. Parachute release apparatus. REDWING, Ltd. Oct. 9, 1952 [Dec. 19, 1951] No. 29800/51. Class 4. [Also in Group XXVIII] A gas pressure operated servo device for parachute release includes a compartment 3 containing gas under pressure having an outlet 10 sealed by a frangible diaphragm 9 which is supported against rupture by the gas pressure by a displaceable support 12 positioned in abutment with one face of the diaphragm, pressure-responsive means 30 being provided to permit the support 12 to move away from the diaphragm to allow the gas under pressure to burst the diaphragm and flow through the outlet to actuate a member 24 connected to the rip cord. In Fig. 2, a gas receptacle 4 is contained in the compartment 3, so that when the latter is screwed on to boss 2 sufficiently to form a gastight joint, a hollow needle 32 pierces the receptacle to release the gas which is then blocked by diaphragm 9. The piston 12 is normally held against the diaphragm by a lever 16 which, as seen in Fig. 4, is restrained by two sears 29 and 33 of which the latter is removable by a static line, and the former is controlled by the capsule 30. As soon as the load is clear of the aircraft and is below a predetermined height, the piston 12 is free to slide and the gas under pressure bursts diaphragm 9, the gas flowing past piston 12 which is smaller than its cylinder, through conduit 17 into cylinder 18, and pushing back piston head 20. Piston 19 then forces fluid from sleeve 25 through a conduit 26 (Fig. 3) past a needle valve 28 into a cylinder 23 to commence the stroke of the member 24, connected to the rip cord, at a slow rate, determined by the setting of valve 28. When piston head 20 (Fig. 2) has moved back enough to uncover a recess 21 (Figs. 2 and 3), the gas flows through conduit 22 direct to cylinder 23, and the stroke of the member 24 is completed at a fast rate. A pressure gauge may be provided for compartment 3. Specifications 606,708 and 748,755 are referred to.