baber/WOPTO huggingface dataset:
Patent GB-626416-A (GB)
Title: Latch mechanism
IPC: E05B65/00
Filed: 1947-06-26
Abstract: 626,416. Latches. PHILCO CORPORATION. June 26, 1947, No. 16895. Convention date, July 3, 1946. [Class 44] A latch, particularly for refrigerator doors, of the toggle-operated type, comprises a latch pivotally mounted on a support ; toggle mechanism comprising two pivotally connected links, the free end of one being adapted to react against a shaft carrying an operating handle, and the free end of the other link being pivoted to the latch at a position removed from the pivot mounting the latch on its support ; means on the handle shaft for moving the toggle to retracted position ; and spring means for moving the toggle into its extended position to move the latch into engagement with a keeper with increasing force as the latch moves towards fully engaged position. As shown, the door jamb is provided with an adjustably mounted keeper 14 having an external striking face 15. The door 16 carries a resilient sealing gasket 20. The mechanism comprises a swinging latch 26 extending through an opening in the inner panel 17 of the door and journalled upon the ends of two spaced support members 29 which are pivotally mounted on a vertical shaft 30 which carries the handle 65 and is journalled in lugs 31 on a plate 32. The supports 29 for the latch have lateral extensions 36 the ends of which are turned outwardly in opposite directions to form arcuate flanges 37 each of which has a slot through which pass screws entering tapped holes in a member forming part of the door framing ; by this means the position of the pivot of the latch may be adjusted. The keeper 14 is also adjustable by screws 41. The latch 26 is formed with a slot 45 in its peripheral edge, and is linked to the shaft 30 by toggle mechanism comprising a link 51 pivoted on shaft 30 and a pair of parallel links 52 connecting the end of link 51 and the latch. The links 52 are pivoted to the latch in recesses, the walls of which constitute abutments for the links in the latched and unlatched positions. The toggle is urged to latching. position, Fig. 1, by a strong spring 56 located round shaft 30 on each side of lugs 31, the ends 60 anchored in holes in flanges 7 and a central bowed part bearing on link 51 near its pivot with links 52. The arrangement is such that the spring acts with increasing force as the latch approaches the fully latched position. When the shaft is turned by handle 65 to unlatch, a member 62 fixed to the shaft engages link 51 and rotates it towards the position of Fig. 3, and the pull on links 52 causes the latch to be rotated. Links 52 are forced past the dead centre position between pivot 29a of the latch and pivot 54 connecting links 51, 52 by the action of a light spring 69, and the mechanism is thus held in the position of Fig. 3 ready to be snapped shut when the door is closed and face 47 of the latch makes contact with face 15 of the keeper. Specifications 610,015 and 611,711 are referred to.
Patent GB-312935-A (GB)
Title: Improvements in and relating to the construction of casings for electric transformers
IPC: H01F27/14
Filed: 1929-06-01
Abstract: 312,935. British Thomson-Houston Co., Ltd., (Assignees of Compagnia Generale di Electricita). June 2, 1928, [Convention date]. Transformers. - The walls of transformer tanks are temporarily strengthened so as to withstand atmospheric pressure by supports introduced between the walls and the transformer core to enable drying-out of the transformer insulation to be performed under vacuum produced within the tank after the transformer has been assembled. The supports comprise I or channel-section members 5 placed against the inner flat walls of the tank. The core clamping bolts of the transformer are provided with blocks 3, 4, the lower ones having inclined faces cooperating with wedge-shaped projections 7 at the lower ends of the members 5. The upper blocks 3 are adapted to bear against wedges 8 inserted from the top of the tank and co-operating with wedge-shaped projections 9 on the members 5 so that the latter are firmly braced against the sides of the tank. Electric or steam heating coils 14 are then introduced into the spaces between the members 5, the cover is placed in position, a strengthening member 18 being inserted between the top of the core and the underface of the cover, the tank is evacuated and the drying-out is performed. Oil is afterwards introduced into the casing and the strengthening members are removed before the transformer is placed in service.
Patent GB-1476276-A (GB)
Title: Lateral force variation correction of pneumatic tyres
IPC: B29C67/00
Filed: 1975-04-24
Abstract: 1476276 Grinding tyres GOODYEAR TIRE & RUBBER CO 24 April 1975 [26 Aug 1974] 16994/75 Heading B3D A method of reducing the lateral force variation exerted by a preumatic tyre on to supporting surface comprises determining the direction and position on the tyre with respect to the circumference of the tyre of the maximum lateral force exerted by the tyre on its supporting surface during rotation of the tyre, removing rubber from the radially outer surface of the axially outer rib of the tyre on the side of the tyre in the direction of the maximum lateral force at the point of maximum force, determining the position on the tyre of the maximum variation of the lateral force from the maximum lateral force, and removing rubber from the radially outer surface of the other axially outer rib at the point of maximum variation from the maximum lateral force. The tyre is rotated about a horizontal or, as shown, vertical axis and bears against a rotatable load roll 14 of a force variation machine 12 having means for sensing radial and lateral force variations. The lateral force variation C varies on either side of the average lateral force A of the tyre and, in the example, has a maximum value at 155 degrees of rotation of the tyre and a minimum value at 325 degrees of rotation of the tyre. A maximum allowable difference between the maximum and minimum values is determined and set into the machine and the maximum amount of rubber to be removed from a rib is set at 0À035 inch. The upper grinding wheel is controlled so as to grind the upper rib 1 at the 155 degree point of the tyre having maximum lateral force variation and the lower grinding wheel is controlled so as to grind the lower rib R 2  at the 325 degree point having the maximum variation from the maximum lateral force variation until the preset maximum allowable difference or 0À035 inch of rubber have been removed. The removal of rubber may be effected over a plurality of rotations of the tyre.
Patent GB-533705-A (GB)
Title: Improvement in indicating means for radio landing system
IPC: G01S19/14
Filed: 1939-06-10
Abstract: 533,705. Directive wireless signalling. INTERCONTINENTAL SERVICE CORPORATION. June 10, 1939, No. 17033. Convention date, Oct 26, 1938. [Class 40 (v)] The signals from a "runway localizer " of the overlapping-beam type are combined with those from an horizontally-polarized landing-beam, in order to give a single-spot indication of the position and " heading of the aeroplane on a cathode-ray indicator. As shown in Fig. 1, the aerial 1 applies landing-beam signals to one pair of deflecting plates 30, 31, whilst two spaced aerials a, b feed the overlapping-beam signals to the other pair of deflecting plates 37, 38 in the same C.R. tube E. The aerials a, bare coupled through " filters " 33, 34 tuned to the interlocking signal-frequencies, and are switched alternately into circuit at 32. Equal voltages are therefore applied to the deflecting plates 37, 38 only so long as the machine is heading directly on to the runway transmitter. The position of the spot, relatively to the cross-line 42, Fig. 2, on the fluorescent screen of the C.R. tube shows whether the craft is taking the landing-beam above or below the line of constant filled-strength. Similarly any change in the position of the spot, relatively to the cross-line 43, as the aerials a, b are switched over, will show whether it is flying to port or starboard of the runway guide-line. A switch 45 in the cathode-supply to the C.R. tube E is operated in synchronism with the switch 32, and varies the intensity of the spot of light on the screen as the aerials a, b are changed over, so that any corresponding movement of the spot on the screen is more easily observed. In the Specification as open to inspection under Sect. 91 the two spaced aerials a, b are replaced by a single receiving aerial. This subject-matter does not appear on the Specification as accepted.
Patent GB-476955-A (GB)
Title: Improvements in reeling and polishing mills
IPC: B24B5/18
Filed: 1936-06-19
Abstract: 476,955. Rolling. WELLMAN SEAVER ROLLING MILL CO., Ltd., and SMITH, S. June 19, 1936, No. 17097. [Class 83 (iv)] In reeling and polishing a tube or bar 5 in a skew rolling-mill 1, e.g. as described in Specification 312,839, [Class 83 (iv)], the bottom work rest 4 is mounted in a cradle 7 supported by suspension rods 9, passing outside the rolls to allow a clear view of the work, and coupled to the cross-head 10 of a hydraulic ram 12, the rise of which is limited by an adjustable stop 14. The rest 4 can be readily detached from the cradle 7 for renewal.
Patent GB-1080434-A (GB)
Title: Phosphorus containing esters and process for the production thereof
Inventor: LORENZ WALTER
IPC: A01N57/08
Filed: 1966-04-19
Abstract: Thio- or dithio-phosphoric acid esters of N-methyl benzazimide of the formula <FORM:1080434/C2/1> where R is C1-C4 alkyl, C1-C4 alkoxy or phenyl, R1 is C1-C4 alkyl, and X is oxygen or sulphur, are prepared by reacting a salt of the formula R-(R1O-)P(=X)S-Me, where Me is a monovalent metal or an ammonnium group, with an N-haloethyl-(2)-benzazimide, preferably in the presence of inert organic solvents or diluents and at an elevated temperature (generally between 30 DEG  and 80 DEG  C.). Suitable solvents include lower aliphatic alcohols, ketones and nitriles. The esters have insecticidal and acaricidal properties.  N - Chloroethyl - (2) - benzozimide is prepared by reacting benzazimide with acetaldehyde and thionyl chloride in the presence of a solvent such as methylene chloride, tetrachloroethylene or chloroform.  The corresponding bromo compound may be prepared by using thionyl bromide as the halogenating agent.  Catalytic amounts of dimethyl formamide may advantageously be present.ALSO:Pesticidal compositions comprise a compound of the formula <FORM:1080434/A5-A6/1> where R is C1-C4 alkyl, C1-C4 alkoxy or phenyl, R1 is C1-C4 alkyl, and X is oxygen or sulphur, in admixture with a solid or liquid diluent or carrier. Preferred liquid carriers are aromatic hydrocarbons, chlorinated aromatic hydrocarbons, paraffins, alcohols and strongly polar solvents, including water, while preferred solid diluents include kaolins, clays, talc or chalk and synthetic minerals.  Emulsifying agents and/or dispersing agents may also be present.  The compositions may be applied by watering, spraying, atomizing, vapourizing, fumigating, scattering and dusting, and may be in the form of solutions, emulsifiable concentrates, emulssions, suspensions, spray powders, pastes, soluble powders, dusts or granules.
Patent GB-995303-A (GB)
Title: Electric circuit breakers
IPC: H01H73/38
Filed: 1963-05-01
Abstract: 995,303. Automatic circuit breakers. K OEDA. May 1, 1963 [June 12, 1962; June 19, 1962], No. 17198/63. Heading H2B. Upon overload an electromagnet 10 attracts an armature 27 causing a trip lever 23 to pivot about 29 to engage a projection 31 on and release a latching arm 20, pivoted at 17, against a spring bias 20a. In consequence a latched member 21 becomes free to pivot about 22 and release a contact arm 13 latched by engagement with a sloping face 21a of member 21. The contacts open under spring 15. To reclose the breaker a dolly 19 is first moved to the off position allowing an arm 16, carrying the pivot 22, to pivot about 17 under the spring 15, whereupon contact arm 13 re-engages surface 21a and member 21 is relatched by arm 20. Subsequent movement of dolly 10 to the on position shown in Fig. 1, recloses the contacts. In a modification (Fig. 7), the sloping face 21a is cut into an integrally moulded pivot-pin 22. In another modification (Fig. 8, not shown), the coil 15 is a coiled torsion spring; an arc chute is included. The electromagnet includes a core movable in an oil-filled cylinder.
Patent GB-556684-A (GB)
Title: Improvements in and relating to chlorinated synthetic rubber
IPC: C08C19/14
Filed: 1942-12-03
Abstract: 556,684. Synthetic rubber. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 3, 1942, No. 17212. Convention date, Dec. 10, 1941. [Class 2 (iii)] A butadiene-acrylic nitrile mixed polymer is swollen by means of a liquid such as carbon tetrachloride, benzene, toluene, or ethylene dichloride, and the swollen mass is then treated with chlorine so that the greater part contains not more than 3 per cent. of chlorine, preferably under conditions such that the chlorine does not react with the swelling-agent. When the chlorination is effected on a swollen mass three products are formed, a white brittle outer layer with 45 per cent. chlorine, a non-rubbery brown portion with 22 per cent. chlorine, and the greater part is a rubbery product with 1.85 per cent. chlorine. Preferably the swollen mass is mixed or agitated during the chlorination, or the quantity of chlorine is controlled so as to obtain a maximum of the rubbery product or the chlorine may be supplied as a solution in carbon tetrachloride, chloroform or ethylenedichloride and the swollen material is employed in thin sheets which are agitated during the process.
Patent GB-985198-A (GB)
Title: Improvements in or relating to signalling circuits
Inventor: FLOWERS THOMAS HAROLD
IPC: H04M19/04
Filed: 1961-05-11
Abstract: 985,198. Substation circuits; keying oscillators. POSTMASTER-GENERAL. April 9, 1962 [May 11, 1961], No. 17269/61. Headings H3R and H4K. A tone-sounder provided at a substation as a substitute for a bell comprises a transistor oscillator VT1 with an associated resistor R3, Fig. 1, or inductor L1, Fig. 2, and capacitor C2 and a tuned transformer T2P, T2S for operating an electro-acoustic transducer. For ringing, a control signal of low audiofrequency from a source V is superimposed on the direct current from the exchange battery B with the result that the transducer emits an audible signal at the frequency of the oscillator modulated at the control frequency. The transformer winding T2P may form part of the transducer, Fig. 1, or windings TDW of one or more transducers may be connected in series with winding T2P, Fig. 2. The tone sounder may be disconnected from the line by a gravity switch when the telephone receiver is removed from its rest, Figs. 3, 4 (not shown).
Patent GB-462797-A (GB)
Title: Improvements in change speed chain gearing for cycles
IPC: B62M9/126
Filed: 1936-06-22
Abstract: 462,797. Variable - speed driving - mechanism for cycles. JUY, L. C. H. June 22, 1936, No. 17273. Convention date, June 27, 1935. [Class 136 (ii)] [Also in Group XXIV] A device for shifting a cycle-chain laterally into engagement with different sized driven sprockets 20, comprises a single guide-roller 15, between flanges 19, extending near to the sprockets 20, the roller and flanges being guided on two parallel spindles 31, 13, carried by an axially fixed, pivoted chain-tensioning arm 8. Around the pivot 7 of the arm 8 is arranged a chain-tensioning torsion-spring 10, adjusted by turning the pivot 7, which has a lock-nut 11. A sheathed tension-cable 25, terminating in a chain 24, shifts the roller and flanges laterally between adjustable limits determined by screwed collars 28, 32 on the lower guide-spindle 13.
Patent GB-945215-A (GB)
Title: Improvements in or relating to m-type electron tubes
IPC: H01J23/00
Filed: 1962-05-04
Abstract: 945,215. Travelling wave tubes. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 4, 1962 [May 4, 1961], No. 17278/62. Heading H1D. A travelling-wave tube of M-type has a sole electrode provided with traps for secondary electrons formed by a bidimensional network of grooves. The fingers formed by the grooves may be triangular or, as shown, rectangular in section and may be inclined in the opposite direction to the direction of propagation of the electron beam, Figs. 2, 3 (not shown). Specifications 762,023 and 781,205 are referred to.
Patent GB-663716-A (GB)
Title: Improvements in or relating to circuits for demodulating modulated-pulse signals
IPC: H03K9/04
Filed: 1946-06-06
Abstract: 663,716. Pulse modulation systems. PHILIPS LAMPS, Ltd. June 6, 1946 [Sept. 28, 1945], No. 17290/46. Class 40 (v). In a receiver, phase or frequency modulated pulses are converted into amplitude variations without the insertion of timing pulses by means of a non-self-oscillating saw-tooth generator 6, (Fig. 2), to which the pulses are fed, a condenser 10 and a resistance 11, the circuit being so dimensioned as to give rise at each pulse to a saw-tooth oscillation, the back-stroke of which are of constant magnitude. Phase modulated pulses are fed on the grid of the oscillator valve 13 which is operated so that anode current is independent of anode voltage and normally biassed to cut-off. During the time between pulses the condenser 10 is charged linearly through the resistance 11 by the battery 12. When a pulse is applied the valve 13 conducts and the condenser 10 discharges through the valve a constant amount due to the constant width of the pulses and the dimensioning of the circuit, thus producing a saw-tooth wave, of variable amplitude (Fig. 1d). The circuit may be modified for demodulating frequency-modulated pulses by including in the circuit a differentiating network. The resistance 11 may be replaced by a pentode valve in order to make the charging current of the condenser more constant. Specification 564,511 is referred to.
Patent GB-256202-A (GB)
Title: Improvements in or relating to frames for locomotives with vertical boiler
IPC: B61C1/10
Filed: 1926-07-10
Abstract: 256,202. Soc. Anon. J. Cockerill. July 28, 1925, [Convention date]. Railway locomotives, steam; frames, plate and bar.-In a locomotive with a vertical boiler H the longitudinal frame-plates AB, EF are curved around the boiler, to allow a greater diameter to the latter, and the frame is carried on the axlesby means of helical springs R.
Patent GB-136209-A (GB)
Title: Improvements in Cans, Receptacles and the like for Holding Foodstuffs or other Materials.
Inventor: FAIRBANKS LUKE JOHN
IPC: B65D45/28
Filed: 1918-10-24
Abstract: 136,209. Fairbanks, L. J., and Kelly, J. R. Oct. 24, 1918. Lids and covers.-An air-tight container for food &c. comprises a square body part A, Figs. 1 and 2, with a hinged cover B carrying a pivoted locking-device C having arms 6a adapted,to engage slots 5 formed in an outwardly and upwardly offset rim 3. Packing-material 11 is arranged below the rim of the lid. The arms 6a engage camsurfaces 7, 8, 9 arranged on the upper face of the cover B. In a modification, a square receptacle has an inwardly projecting flange 6, Fig. 5, supporting packing-material 7, upon which rests a cover B carrying a spring locking-piece 8 arranged to engage under the flange 6. The cover is tightened on its seat by a nut 13 engaging a screwed part 9 projecting from the locking-piece 8. In order to hold the cover in its open position, its edge may be engaged in a hook 15 projecting inwards from the flange 6.
Patent GB-717214-A (GB)
Title: Improvements relating to anaesthetics
IPC: C07D295/088
Filed: 1952-07-10
Abstract: The invention comprises anaethestics of the formula <FORM:0717214/IV (b)/1> where R1 and R3 are alkyl or alkoxy groups, R2 is hydrogen or an alkyl or alkoxy group, R4 is a hydrocarbon chain of up to 6 carbon atoms, and R5 and R6 are hydrogen or alkyl groups which, with the nitrogen, may form a heterocyclic ring.  They may be prepared by reacting an isocyanate of the formula <FORM:0717214/IV (b)/2> with an amino alcohol of the formula <FORM:0717214/IV (b)/3> with or without an inert solvent, e.g. benzene or toluene, first with cooling and then by boiling for one or two hours.  The amino alcohol may be used in the form of its salt.  In the examples: (1) 2,6-dimethyl-4-tert.-butyl carbanilic acid-b -piperidino-ethyl ester is prepared from 2,6-dimethyl-4-tert.-butyl phenyl isocyanate and b -piperidino-ethyl alcohol; (2) 2,6-dimethyl-4-n-butoxy carbanilic acid-g -diethylamino-propanol ester from 2,6 - dimethyl - 4 - n - butoxy phenyl isocyanate and 3-diethylaminopropanol-1; (3) 2,4,6-trimethyl-carbanilic acid-b -diethylamino ethyl ester hydrochloride is prepared from 2,4,6-trimethyl phenyl isocyanate and diethylaminoethyl alcohol. U.S.A. Specification 2,109,492 is referred to.
Patent GB-834052-A (GB)
Title: Method of and apparatus for conveying particulate material
IPC: B65G53/00
Filed: 1957-05-31
Abstract: 834,052. Pneumatic conveyers. SCHMITT, E. C. May 30, 1958 [May 31, 1957], No. 17434/57. Class 78 (1). Apparatus for conveying fluidized particulate material, e.g. coal dust, through a pipe 13 from a pressure vessel 8 to a kiln 19 comprises a feed vessel 1 arranged above the vessel 8 and communicating with it by means of a passage controlled by a valve 9, the pressure in the vessel 1 being normally atmospheric, but when the pressure in the vessel 8 falls below a predetermined minimum, the pressure in the vessel 1 is increased to this amount and the valve 9 opened to allow material to pass from the upper vessel to the lower. The vessel 1 contains a conical porous floor 5 and the vessel 8 a porous floor 10, air being supplied to the spaces 6, 11 between these floors and the walls of the vessels by pipes provided with valves 7, 12. The part 15 of the discharge pipe passes into a pipe 17 leading from a blower 18 and ends in a jet 16. Transfer of material from the vessel 1 to the vessel 8 takes place while sufficient material and pressure remains in the vessel 8 to ensure continuous flow.
Patent GB-1063532-A (GB)
Title: Improvements in or relating to gas-operated automatic firearms
IPC: F41A5/26
Filed: 1965-04-26
Abstract: 1,063,532. Firearms. RHEINMETALL G.m.b.H. April 26, 1965 [Oct. 29, 1964], No. 17445/65. Heading F3C. An automatic firearm has a gas cylinder 20, a piston 24 slidable therein and a duct connecting the gas cylinder to a tapping hole 12 in the firearm barrel 2. The duct is formed by a tube 18, a deflector 5 and a passage 4 in the foresight 3. The head 17 of the tube 18 is simply pushed into a sleeve 8 so that when the barrel is to be removed from the firearm body the two parts of the gas duct are easily disconnected. The sleeve 8 is rotatable to place one of a number of different size apertures in communication with passage 4 to alter the gas flow and is locked in position by a spring-loaded pin 11 engaging in one of a number of holes provided in the flange 9. The other end of the tube 18 is connected to the cylinder head 20 in the manner of a sleeve valve or, as shown, by a cone 19 slidable in a funnel formed in the head. Labyrinth seals may be provided between the cone and funnel. The sleeve 26 of a cocking slide is provided between the gas piston 24 and the casing 1.