baber/WOPTO huggingface dataset:
Patent GB-555478-A (GB)
Title: Improved amplifying valve for high frequencies
IPC: H01J19/02
Filed: 1941-11-20
Abstract: 555,478. Thermionic valves. LIEBMANN, G., and CATHODEON, Ltd. Nov. 20, 1941, No. 14914. [Class 39 (i)] In a valve wherein the grounded cathode 6 is arranged as a screen between the control electrode 3 and the anode 2 (i) the electron emissive material 6a is only on that side of the cathode facing the control electrode and (ii) a screen grid 10 at cathode potential may be interposed between the cathode and anode. The emission may be thermionic or photo-electric. Extensions 4 which may pass outside of the envelope act as a screen outside the direct electron path ; these extensions may be in two superposed parts, Fig. 2 (not shown), each acting as a lead to the thermionic cathode. This may be formed by a number of wires 5, Fig. 3, each connected at one end to the extension 4 and at their other ends to a strip 7 spring supported from a mica plate 8 ; the insulated end may be grounded through the extension 4 by a condenser the mica plate forming the dielectric thereof. The screen may be in the form of a cylinder within the valve extending around the control electrode. The cathode may be indirectly heated comprising a number of wires fixed to two heated cylinders pressed apart by springs ; or a perforated plate 40, Fig. 12, with emissive material 40a is mounted on a circular channel containing a heater 41. In a modification the control electrode 13, Fig. 6, is inside the cathode 16; mica spacers 23, 24, Fig. 7, hold the electrodes in position and screens 25, 26 are connected to one of the cathode posts 22. A downward extension 27 of the screen 26 separate the anode and control electrode leads. A cooling fin 28 is provided on the control electrode. The cathode filaments may be parallel to the valve axis. U.S.A. Specification 2,022,212 is referred to.
Patent GB-333600-A (GB)
Title: Improvements in power transmission mechanism
IPC: B60K23/02
Filed: 1929-05-13
Abstract: 333,600. Philips, H. B. May 13, 1929. Controlling different functions by same handle or lever.-In clutch mechanism for motor vehicles &c. of the kind in which a member or group of members having screw-threaded engagement with one shaft moves into engagement when the motor accelerates and out of engagement when the, driven shaft overruns, there is provided a further pair of clutch surfaces, which are brought into engagement by further axial movement of the threaded clutch member, and controllable means are provided for re-engaging the clutch when overrunning occurs. A loose flywheel 14, Fig. 1, is threaded on a boss 12 of a motor-vehicle engine-shaft 10 and is connected by a torsion spring 19 to a flange 11 on the shaft, so that. when the shaft 10 is accelerated, the flywheel moves to the left due, to its inertia. On. movement of the wheel 14 to the left, or of a spring-retracted collar 24 to the right when the wheel 14 is retracted on overrunning, the clutch surfaces 30, 15 first engage, and thereafter bent levers 27 turn to bring surfaces 32, 18 into contact. The accelerator pedal is connected to a brake shoe 56, Fig. 3, which is applied to the flywheel rim to hasten engagement of the clutch simultaneously with depression of the pedal, the flywheel, however, moving axially out. of contact with the shoe, when the clutch is engaged. A fork 40, fast on a shaft 41, is turned to shift the collar 24 when the brake-pedal 53, loose on the shaft 41, is depressed. The pedal 53 has a lostmotion connection 55, Fig. 4, with the brakerod 54 and contacts by a pin 52 with a lug 51 on an arm 48, which turns on a pivot 46 and is normally aligned with an arm 45 by a lug 49 and spring 50, the arm 48 being linked to an arm 43 on the shaft 41. Shortly after the lostmotion 55 is taken up, the pin 52 passes over the lug 51, allowing the collar 24 to be spring- retracted, the full application of the brake being thus effected with the clutch disengaged. On return of the pedal, the spring 50 yields to allow the pin 52 to pass under the lug 51.
Patent GB-584397-A (GB)
Title: Improvements relating to the lubrication of cap spindles in textile machinery
IPC: D01H7/20
Filed: 1944-08-07
Abstract: 584,397. Lubricating cap spindles. BRIGGS, E. Aug. 7, 1944, No. 15014. [Class 120 (ii)] Cap spindles D lubricated by one or more felt, &c., pads A, through which a spindle passes and disposed in a recess B in the lifter plate C, are provided with a housing E for the pads, such housing being mounted on a single spindle only and making a close joint with the plate C. The housing also supports the cap spindle tube K and is of such a depth , that it exerts no pressure on the pads which are collectively of such a thickness that they project considerably above the top of the plate C. The top of the housing E is preferably formed as a cup F, to contain the usual boss H on the wharle J, and is furnished with holes G through which lubricant may pass to the pad A. The housing E is provided with a lip L, engaging the edge of the lifter plate, to prevent the turning of the housing when the wharle is running.
Patent GB-742017-A (GB)
Title: Guard for a carving fork
IPC: A47G21/02
Filed: 1953-05-29
Abstract: 742,017. Carving forks. KRAUSZ, A., and KRAUSZ, N., [trading as HARRIS MILLER & CO.]. Dec. 4, 1953 [May 29, 1953], No. 15020/53. Class 30. A carving fork guard comprises a guard arm 12 integral with, or rivetted to, a spring clip 11 removably attaching the guard to the shank of a fork and having opposing limbs 10 straddling the shank and a catch 15 hinged to the free end of one of the limbs and slotted at 16 to engage over the free end of the other limb.
Patent GB-800192-A (GB)
Title: Improvements in or relating to the manufacture of metal strip
IPC: B22F7/04
Filed: 1955-05-25
Abstract: 800,192. Powder metallurgy. BRENNAN, J. B. May 25, 1955, No. 15065/55. Addition to 734,275. Class 82(1) [Also in Group XXII] In bonding together two strips 25, 28 of dissimilar metals a face of one strip 25 is heated whilst cooling the other face, at least that face of the other strip 28 in engagement with the heated face of the first strip is heated, the strips are not pressed together and the outer face of at least one of the juxtaposed strips is cooled. A steel strip 25 is passed under a spray 27 of nickel powder which is fused by a high frequency inductor 26, then under a hopper 29 delivering copper powder on to the strip and then under an induction heater 30 which sinters and bonds the powder to the strip 25 and a strip 28, a cooling shoe being provided beneath the strip 25. The sintered copper is impregnated with lead or lead and tin in a bath 32 by passage of the composite strip over a wheel 31 and beneath a salt, e.g. potassium nitrate, bath 33 and the bath 32. The lead &c. is solidified by a fluid cooled die 34.
Patent GB-650776-A (GB)
Title: Improvements in or relating to the manufacture of thiazyl and thiazolinyl dithiocarbamates
IPC: C07D277/74
Filed: 1947-06-09
Abstract: Thiazyl and thiazolinyl-N : N-disubstituted dithiocarbamates of the formula <FORM:0650776/IV (b)/1> are prepared by treating a thiocarbamyl chloride <FORM:0650776/IV (b)/2> where R1 and R11 are alkyl, aralkyl or aryl groups or taken together are a polymethylene group, with a mercapto-thiazole or thiazoline <FORM:0650776/IV (b)/3> where R is vinylene, alkyl substituted vinylene, o-arylene, substituted o-arylene, ethylene or alkyl substituted ethylene and M is an alkali metal, ammonium or hydrogen.  R1 and R11 are preferably identical alkyl groups of 1-8 carbon atoms or together represent a cyclo-pentamethylene group.  When R is aryl it may be mono- or polynuclear and substituted by halogen, alkyl, or nitro, e.g. as in 2-mercapto - 5 - nitro - and 2 - mercapto - 6 - chlorobenzothiazoles. It is preferred to treat the salt, e.g. the sodium salt of the mercaptan in aqueous solution with agitation at 40-80 DEG  C. with the thiocarbamyl chloride, which may be in solution, e.g. in benzene. The thiocarbamyl chlorides may be prepared by direct chlorination of the corresponding tetra-substituted thiuram sulphide.  In the examples (1), (3)-(8) and (10) 2-mercaptobenzothiazole is reacted with diethyl, dibutyl, dimethyl, ethylphenyl, N : N-pentamethylene, and dibenzyl thiocarbamyl chlorides, and (2), (9) diethyl thiocarbamyl chloride is treated with 2-mercapto thiazoline and 2-mercapto naphthothiazole.  Specification 650,056 is referred to. The Specification as open to inspection under Sect. 91 comprises also eight examples of the preparation of the above described thiocarbamyl chlorides by chlorination of the tetrasubstituted thiuram sulphides. This subject-matter does not appear in the Specification as accepted.ALSO:Thiazyl and thiazolinyl N : N-disubstituted dithiocarbamates of formula <FORM:0650776/V/1> where R is vinylene, alkyl substituted vinylene, o-arylene, substituted o-arylene, ethylene or alkyl substituted ethylene, and R1 and R11 are alkyl, aryl, or aralkyl or together represent a polymethylene group (see Group IV (b)), are used as vulcanization accelerators with delayed action characteristics. An example is given of the vulcanization of natural rubber (smoked sheet) at 274 DEG  F. with sulphur and 2-benzothiazyl - N : N - diethyl dithiocarbamate in presence of carbon black, zinc oxide, stearic acid, pine tar and an anti-oxidant, and of a 75/25 butadiene-styrene polymer mixed with carbon black, coal tar type softener and zinc oxide in presence of N : N-diethyl, dimethyl, dibutyl, ethyl-phenyl, and N,N-pentamethylene 2-benzothiazyl dithiocarbamate.
Patent GB-1093265-A (GB)
Title: Hydraulic power-lifting mechanism for an agricultural tractor
IPC: A01B63/10
Filed: 1965-04-09
Abstract: 1,093,265. Tractor power lift mechanisms. KNOCKNER - HUNBOLDT-DEUTZ A.G. April 9, 1965 [April 18, 1964], No. 15167/65. Heading A1P. A tractor power lift mechanism is characterized by a substantially cylindrical unit 15 which includes the main control valve and which is removably secured in the housing of the power lift mechanism in a fluid tight manner. A conical part 14b of the unit having radial apertures engages with a conical recess in the housing having complementary apertures. In an embodiment the conical part is sealed to the housing by washers.
Patent GB-1392272-A (GB)
Title: 3-formylrifamycin azines
IPC: A61K35/74
Filed: 1973-03-29
Abstract: 1392272 Rifamycin derivatives GRUPPO LEPETIT SpA 29 March 1973 [31 May 1972] 15l91/ Heading C2C Derivatives of rifamycin SV having the general formula and 16, 17, 18, 19, 28 and 29 hexahydro and 25-desacetyl derivatives thereof wherein the symbol Rifa represents the rifamycin radical of formula and A represents (1) a direct bond connecting the two nitrogen atoms ; (2) a group wherein y is -CO-, -CNH-, -CS-, -SO 2 -, a divalent, aliphatic, cycloaliphatic, aromatic, araliphatic, or heterocyclic radical; R 2  and R 3  indedendently represent hydrogen, alkyl or taken together represent an aliphatic divalent chain of 1-4 carbon atoms connecting the two terminal nitrogen atoms, or (3) a divalent group wherein X represents a direct bond between the two carbon atoms, a divalent aliphatic, cycloaliphatic, aromatic, or heterocyclic radical, R and R 1  may be independently hydrogen, alkyl, cycloalkyl, aryl, heterocyclic or taken together represent an aliphatic chain of 1 to 8 C atoms connecting the two terminal carbon atoms, may be prepared by reacting 3-formylrifamycin SV or its 25-desacetyl or 16, 17, 18, 19, 28 and 29 hexahydro derivative with a hydrazine compound of the formula H 2 N-A-NH 2  in an inert organic solvent at a temperature ranging from room temperature to the boiling temperature of the solvent. Compounds prepared include 3-formylrifamycin SV azine, 16, 17, 18, 19, 28, 29 - hexahydro - 3 - formylrifamycin SV azine and 1,4-piperazinylidene-bis-(3,3<SP>1</SP>-iminomethyl rifamycin SV). Pharmaceutical compositions having antibacterial and anti-tumour activity comprise the above derivatives of rifamycin SV and a pharmaceutically acceptable carrier.
Patent GB-512272-A (GB)
Title: Improvements in side delivery rakes or swath turners
IPC: A01D78/00
Filed: 1938-05-21
Abstract: 512,272. Hay-making. BAMFORD, C. J., and BAMFORD, H. V. May 21, 1938, No. 15196. [Class 6 (iii)] To ensure that none of the tines of a side delivery rake or swath turner of the type in which tine bars are horizontally disposed between rotatable reels or discs is in its lowest position when the raking element is raised for transport and the drive stopped, a cam-like element rotating with the wheel of the rake is provided at one or both ends thereof and is adapted to be engaged resiliently by an abutment on the frame when the rake is elevated. The rotary reel 15 carrying the tine bars 17 at one end is supported by a block 24 provided with a pin 29 guided in a vertical slot 28 in a bracket fixed to the frame member 25. The block 24, and so the end of the raking device, is adapted to be raised and lowered by a stay 23 connected to the usual lifting arrangement. The reel 15 is provided with a cam 37 having three rises midway between the arms of the reel carrying the tine bars and the frame is provided with a spring-pressed lever carrying a roller 34 adapted to engage the cam when the raking element is raised. The pressure thus given to the cam causes the rakes to take up the position shown although they can still rotate should the clutch be accidentally engaged.
Patent GB-806945-A (GB)
Title: Improvements in or relating to gas-filled electronic valves
Inventor: BUCKINGHAM JOHN DOBLE
IPC: H01J17/26
Filed: 1955-05-26
Abstract: 806,945. Thermionic valves. M-O VALVE CO. Ltd. May 28, 1956 [May 26, 1955], No. 15291/55. Class 39(1). A gas filled electronic valve having a solid cathode 2 and designed for use as an amplifier, modulator, oscillator, rectifier or switch, is provided with a gas reservoir in the form of a container 14 of electrically resistive material substantially filled with a solid substance (Ti for absorbing and evolving hydrogen) which evolves a gas on heating and reabsorbs it on cooling, the container 14 having apertures of such size that the substance cannot escape from the container 14 while the gas can pass freely into and out of the container 14, the container 14 being provided with leads 18, 19 for the passage of electric current through the material of and along the walls of the container for heating, the arrangement being such that when the container 14 is unheated the gas pressure in the container 14 is negligible compared with the desired operating pressure of the gas. In the form shown, the gas reservoir comprising titanium chips placed in four tubes 14 of an alloy of 54 per cent. Fe, 28 per cent. Ni and 18 per cent. Co, is housed in a side tube 13. The tubes 14 have helical rows of perforations and are connected in series by short lengths of nickel wire 15 and to current leads 18, 19 the wires and leads being inserted into the tubes 14 and secured thereto so as to close the ends of the tubes by spot welding. Bent nickel strip springs 20 fixed to tubes 14 adjacent one end thereof keep the tubes 14 centrally positioned within the side tube and annular ceramic spacers 16, 17 strengthen the assembly. The hydrogen is introduced and absorbed by the titanium after assembling and processing but before sealing off at 12 until the titanium has 30 ccs of hydrogen in solution at normal temperature and pressure. In operation the heating current of 5 amps. at 2À5 volts through tubes 14 maintains them at 400‹C. which corresponds to a hydrogen gas pressure of 0À5 mms. Hg. In operation a state of equilibrium gas pressure is reached 45 seconds after applying current to tubes 14 ; when no current is applied substantially all the hydrogen is reabsorbed, the hydrogen pressure falling to less than 0À005 mm. Hg. The invention can also be applied to TR, ATR switches and to valves containing mixtures of gases, in which case the reservoir is used to keep the pressure of one gas constant. The directly heated thermionic cathode is surrounded by a heat shield 3 and shielded from control grid 4 and anode 5 by baffle 6.
Patent GB-452603-A (GB)
Title: Improvements in or relating to lockable free wheel transmission mechanism
IPC: F16D41/08
Filed: 1935-05-25
Abstract: 452,603. Lockable one - way clutches. PULSOMETER ENGINEERING CO., Ltd., and WARREN, R., Nine Elms Iron Works, Reading. May 25, 1935, No. 15300. [Class 80 (ii)] In a one-way roller clutch wherein dogs 6 on a member 5, splined on the driving shaft 4, are adapted to engage dogs 7 in the outer driven member 1 of the clutch, so as to lock the latter, balking means for preventing engagement of the dogs until the clutch is in the overrunning condition, so as to prevent jamming, comprises a radiallyyieldable obturator member 33 disposed in the gap between two of the dogs 7, the end faces of the dogs 6 and 7 being chamfered. The end face of the member 33 lies in the plane of the outer end faces of the dogs 7 and its inner surface is inclined so that engagement of the dogs is prevented until the clutch is in overrunning condition, when the chamfered ends of the dogs 6 can enter beneath the member 33 and move it outwards to permit full engagement of the dogs. The member 33 is carried by one end of a split ring 34 engaging a groove in the dogs 7, the other end being anchored to one of these dogs. The inner member 3 of the clutch has limited angular play on the shaft 4 and has teeth 12 coacting with teeth 15 on the member 5 so as to prevent approach of the dogs until their speeds have first been synchronized ; means, as described in Specification 442,208 or in Specification 442,279, may however, be provided for eliminating or overcoming this balking action. Specification 441,613 is referred to in the Provisional Specification.
Patent GB-600784-A (GB)
Title: Improvements in and relating to evaporators
IPC: C02F1/04
Filed: 1945-06-15
Abstract: In an evaporator, particularly for distilling sea-water, comprising a boiler 1, a constant level chamber 2, and a condenser 3, which receives steam from the constant level chamber, the bottom of which is connected with the bottom of the boiler by a pipe 28 while the top of the boiler is connected through a restricted passage with the top of the constant level chamber, the boiler is disposed below the constant level chamber and the restricted passage, formed by pipe 38 and valve 39, <PICT:0600784/III/1> causes water in the boiler to back up into the constant level chamber when the quantity of water entrained in the steam increases.  Sea-water circulates through pipe 51, chamber 49a and pipe 53 to condense steam in the spiral 47 leading to the distillate outlet 48 and to make up the water level in the chamber by passing down the tube 56, the exit of which is controlled by the float - operated valve 57.  Steam, with entrained water, passes from the boiler tube 8, which is heated by internal - combustion exhaust gases circulated through the annular baffled space 12, into the separating chamber 27 having a lead-out pipe 33 through which the steam and entrained water pass. The steam with some entrained water enters the upper chamber 24 through the branch pipe 38 joined to the pipe 40, which is tangential to the wall of the chamber, the entrained water being deposited on the wall.  The water not entrained in the pipe 38 is returned to the bottom of the boiler by the water gauge 35.  A short pipe 30 forms an annular downtake in the tube 8 for recirculation of the water in the boiler.
Patent GB-322182-A (GB)
Title: A process for the solidification of sandy masses permeable by water
IPC: C09K17/12
Filed: 1928-05-24
Abstract: 322,182. Tiefbau-und Kalteindustrie Akt.-Ges. vorm. Gebhardt & Koenig, Siemens-Bauunion Ges. Kommanditges., and Joosten, H. May 24, 1928. Hardening the ground.-A process for solidifying permeable sandy masses such as loose sandy rock consists in introducing in succession chemical solutions such as, for example, silicic acid or soluble silicates, and suitable acid or salt solutions, which react in such a way that a gel is formed which consolidates the treated mass. For example, a solution of silicic acid, followed by a solution of common salt or an acid solution. may be used. The method may be used to treat natural soil or banked up material or may be applied in sinking shafts, or in constructing foundations. In consolidating soil, the solutions are poured or sprayed on, or injected at a suitable depth. If the material treated is dry, a preliminary treatment with water or soap solution may be used. Reference has been directed by the Comptroller to Specifications 10478/12, 4805/14; 247,976, 260,031, [both in Class 140, Waterproof &c. fabrics], and 262,223.
Patent GB-475822-A (GB)
Title: Improvements in the manufacture and production of plastic masses
IPC: C08L1/18
Filed: 1936-06-02
Abstract: Films, foils, lacquers, artificial threads, plastic masses, impregnating and coating compositions, consist of or comprise essentially a mixture of nitrocellulose and a polymerization product of one or more vinyl ethers, the polymerization product being soluble in water, methanol, or ethanol.  The polymerization product may be formed from a mixture of a preponderating amount of a vinyl ether with another vinyl compound which is by itself capable of polymerization under the conditions in which vinyl ethers can be polymerized.  The polymerization products function as gelatinizers or softening agents for the nitrocellulose. Polyvinyl methyl or ethyl ethers, interpolymerization products of vinyl methyl or ethyl ethers with small amounts of vinyl ethers of higher fatty alcohols, products of vinyl isobutyl ether and glycerol formaldehyde acetal vinyl ether, or interpolymers of vinyl ether with styrene or vinyl diarylamines, may be employed. The films and other materials produced do not swell in water, and the polyvinyl ethers are not dissolved out by treatment with water.  The films are of high tensile strength, elasticity, and stability to ageing.  The compositions may be prepared by mixing solutions or emulsions of the components in water or organic solvents and then drying.  The components may be mixed by kneading or rolling. Shaped articles may be obtained from the compositions by casting, spraying, drawing, or cutting.  Fillers, dyestuffs, and softeners may be added.  Films suitable for photographic purposes, packing material, intermediate layers for safety glass, electrical insulating foils, material for oilcloth, floor and wall coverings, shoe bottom fillers, primings and coatings for packing material and fibres, may be obtained from the compositions.  In examples, films or foils are obtained by casting solutions of nitrocellulose in admixture with a water or alcohol-soluble polyvinyl ether.  Interpolymers of vinyl methyl ether and the vinyl ether of hydrogenated sperm oil alcohol, polyvinyl ethyl ether, interpolymers of vinyl ethyl ether and styrene, interpolymers of isobutyl vinyl ether and glycerol formaldehyde acetal vinyl ether, interpolymers of vinyl methyl ether and the vinyl ether of isoborneol or of ethylene glycol monoxylenyl ether or of ethylene glycol monobutyl ether, interpolymers of vinyl methyl ether, are specified.  Ethyl acetate, butyl acetate, butanol, benzene, toluene, ethanol, and butene, are specified solvents, or solvent mixtures.