baber/WOPTO huggingface dataset:
Patent GB-664834-A (GB)
Title: Improvements in or relating to machines for finishing the teeth of gear wheels
Inventor: TUPLIN WILLIAM ALFRED
IPC: B23F23/12
Filed: 1948-09-14
Abstract: 664,834. Gear-finishing. BROWN MACHINE TOOLS, Ltd., D. Sept. 14, 1949 [Sept. 14, 1948], No. 24052/48. Class 83 (iii). [Also in Group XXIV] A gear-shaving machine comprises a member a which is moved longitudinally at each end of the traverse of the tool or work to actuate, through pivoted links c, two pawls e, f which are diametrically - opposed in relation to a ratchet-wheel g, the wheel g being operatively connected to the in-feed mechanism. The tool or work-carrying member b may act directly on the rod a or through intermediate rotary members. Masking plates h adjust the amount of each feed movement.
Patent GB-332081-A (GB)
Title: Improvements relating to expanding shoe brakes
IPC: F16D65/08
Filed: 1929-08-06
Abstract: 332,081. Fiat Soc. Anon. May 14, 1929, [Convention date]. Blocks and shoes. - The expanding brake shoes for a brake drum are cast in a ring in the position they will assume in the brake drum, the ring is machined and the shoes separated by cutting off the metal at the connecting points of the shoes, i.e. by dividing the pivot boss 3 along the line A, B, and removing the portion 4 at the place where the cam will be arranged. The two halves of the boss 3 are held on the pivot by rings embracing them on each side and held in place by a flange on the pivot and a washer held on the pivot by a pin.
Patent GB-484549-A (GB)
Title: Improvements in artificial zeolites and method of making the same
IPC: C01B33/46
Filed: 1937-09-03
Abstract: The resistance of artificial zeolites comprising alkali metal alumino-silicate gels to the dissolving effect of corrosive waters is increased by freezing the gel, thawing it and removing the mother liquor, and treating the granules with a sodium silicate solution, whereafter the gel is dried at temperatures up to 150 DEG  C. to a moisture content of not less than 30 per cent.  The granules may be treated after drying or while still moist, and washing of the treated granules may be effected before or after drying.  A second silicate treatment may follow initial drying.  A water solution of a silicate, stannate, tungstate, dichromate, molybdate, zincate, or sulphate of the alkali metals, ammonia, aluminium and divalent iron may be used as the treating solution.
Patent GB-623038-A (GB)
Title: Improvements in and relating to multi-channel signalling systems
IPC: H04J3/04
Filed: 1946-08-14
Abstract: 623,038. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., and LEVY, M. M. Aug. 14, 1946, No. 24161. [Class 39 (i)] [Also in Groups XL (b) and XL (c)] The beam of a multianode cathode-ray tube distributer scans each anode in turn and is suppressed by means of an oscillation applied to an electrode of the tube, before it leaves each anode and not brightened again until after it reaches the next anode. A 10 kc/s. oscillation 13 applied in quadrature to the deflecting coils 14, 15 causes the beam to scan in succession ten anodes 12 arranged in an annulus. A rectangular waveform 10 of frequency 100 kc/s. modulates the intensity of the beam so that it is suppressed except for the portion 30 of each anode. The output of each anode is therefore a rectangular pulse 16, 17, 18 and so on, the shape of which is independent of the size of the anodes. Each of the time-displaced pulses 16, 17, 18 may be modulated with intelligence signals and form ten communication channels. The number of channels may be doubled by using two tenanode tubes, Fig. 3 (not shown), but still employing a 10 kc/s. intensity modulation which is fed in opposite phase to the two tubes. In a modification, Fig. 4 (not shown), the anodes surround a central elongated cathode. A double-pencil scanning beam may be employed, scanning two sets of anodes and the anodes may be arranged in rows instead of annuli. As described, negative pulses are produced at the anodes, but by adding a collecting electrode and using the secondary omission from the anodes, positive pulses may be obtained. The scanning spot may be circular or elongated.
Patent GB-795843-A (GB)
Title: Process for the manufacture of acetyl-acetone
Filed: 1956-08-07
Abstract: Acetyl acetone is produced by subjecting isopropenyl acetate in the vapour phase to rearrangement at a temperature of 300 DEG  to 600 DEG C. in the presence of a metal as catalyst, wherein the vapours are passed through a reaction vessel having a catalytic body or bodies, located within the interior of the vessel, so as to impede the flow of vapour and cause a substantial proportion of the vapour to come into contact with the catalyst, the catalyst being molybdenum or an alloy thereof.  The catalyst may be used in a finely-dispersed condition on an inert carrier such as pumice stone, 2-10 per cent of molybdenum by weight of the carrier being sufficient.  A suitable alloy is a molybdenum-iron alloy containing 1.8 to 10 per cent of molybdenum.  The catalyst may be in the form of balls, turnings, or wire spirals.  In examples: (1) isopropenyl acetate vapour is passed at 600 DEG  C. through a tube of refined steel filled with turnings of a molybdenum-iron alloy, the gases are cooled and the liquid obtained is fractionated to give acetyl acetone with acetic anhydride as a by-product; (2) isopropenyl acetate vapour is passed over a catalyst comprising molybdenum on pumice at 500 DEG  C. and acetylacetone is recovered from the products.
Patent GB-1269959-A (GB)
Title: Method for treating tobacco
IPC: F16L19/07
Filed: 1969-05-13
Abstract: 1,269,959. Treating tobacco. TANAG BASEL A.G. 13 May, 1969 [13 May, 1968], No. 24296/69. Heading A2C.  Tobacco is mellowed and nicotine removed by a process that comprises passing through the tobacco a gaseous treatment medium containing water vapour, and controlling the process as a function of the alkalinity of the treatment medium leaving the tobacco. The process may be carried out at temperatures that are varied between 60 and 100‹C by variation of the degree of vacuum maintained in a container for the tobacco being treated, and ammonia gas may be added to the water vapour during part of the treatment. In an example, saturated water vapour at 60‹C is passed through the tobacco for about 5 min. after which an initial measure of condensate alkalinity is obtained by determining the pH value of a sample and by titration of a sample with sulphuric acid. Ammonia gas is then added to the water vapour until the condensate has a pH value of about 11, and the temperature is subsequently raised in stages, during which the introduction of ammonia is controlled to maintain a predetermined alkalinity of the treatment medium until, after a period at 80‹C, the introduction of ammonia is terminated and the water vapour temperature increased to 85‹C to expel the remaining ammonia, the alkalinity of the condensate being monitored at 5 min intervals so that treatment may be terminated when the condensate has a pH value of e.g. 0.2 less than its initial value. In another example, water vapour is cyclically varied in temperature between 60 and 100‹C until the alkalinity of the condensate, which is continuously monitored, has a desired final value. A modification of this example involves the introduction of ammonia during the low temperature parts only of each cycle.
Patent GB-670248-A (GB)
Title: Transverse travelling wave amplifier
IPC: H01J25/36
Filed: 1948-09-17
Abstract: 670,248. High frequency discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. Sept. 17, 1948 [Feb. 4, 1948], No. 24411/48. Class 39 (i). A transverse travelling wave tube comprises a transmission line or wave-guide in which waves are transmitted in a transverse electromagnetic or a transverse electric mode, an apertured electron accelerating means associated with a multiplicity of electron sources, and means for projecting transversely across the line is wave-guide only those electrons which enter the apertures of the accelerating means, the accelerating means and the electron sources being so arranged that in the absence of a magnetic field the electrons do not enter the apertures, but under the influence of the magnetic vectors of waves travelling in one direction in the line or wave-guide, or of the magnetic vectors of auxiliary waves dependent on the first waves electrons are diverted to enter the apertures only where the electric field across the line or wave-guide is directed towards the apertures. In Fig. 3 the wave to be amplified is propagated along the coaxial line defined by conductors 3 and 4, and an auxiliary wave is propagated along the coaxial line defined by conductors 4 and 5. A plurality of cathodes 6 are arranged along the axis, a pair of conductors 8 supplying the heating current. The potentials on the electrodes 4 and 5 and their arrangement are such that electrons cannot normally pass into the space between conductors 3 and 4; but under the influence of the magnetic vector of the auxiliary wave, which may be derived from the main wave, electrons are deflected into the space between conductors 3 and 4 at times when the electric field of the main wave opposes them so that they give up energy to the main wave. Figs. 6 and 7 show an embodiment utilizing a circular wave-guide 14 provided with an apertured auxiliary electrode 18, a plurality of cathodes 15, and a collecting electrode 17 insulatively but capacitatively connected to the wall of the wave-guide 14. A further embodiment, Figs. 4 and 5 (not shown), utilizes a hollow wave-guide of square cross-section.
Patent GB-950516-A (GB)
Title: Improvements in or relating to yarn guides for over-end winding
Inventor: IWNICKI KURT
IPC: D01H7/52
Filed: 1961-07-06
Abstract: 950,516. Ring-spinning apparatus. BRITISH NYLON SPINNERS Ltd. June 26,1962 [July 6, 1961], No. 24433/61. Heading D1D. Means for winding yarn on to a bobbin on a rotating spindle comprises a member 6,4 with an internally-grooved circular aperture 8 surroun ding the bobbin, and an inner rigid ring-member 3 retained by the groove; the groove has flanges or side walls parallel for at least part of their depth and the ring-member is of slightly less thickness than the distance separating the parallel side walls of the groove so as to have a sliding fit between them and has an external diameter less than the sum of the radius of its circle of rotation and the radius of the rims of the flanges of the groove (or the greater rim radius if the rims have different radii). Accordingly, as the inner ring member rolls in the groove, there is opposite to its point of contact therewith, a crescent-shaped gap between the inner ring- member and at least one of the flanges of the groove, which gap accommodates the yarn which passes through it in contact with the periphery of the inner ring-member. The grooved-member instead of being in three parts as shown may be a unitary ring or a square or other plate and may have a slot for threading-up. The groove may be of rectangular or other section with unequal or equal side-walls. The section of the ring-member may be rectangular L-shaped, Y-shaped or otherwise formed as in Fig. 3, now shown, and may have the yarn-contacting edge rounded. The members may be of plain or chronium-plated steel, aluminium, titanium, the material known under the Registered Trade Mark "Duralumin", nickel-chromiummolybdenum steel, nylon or p.t.f.e. While the ring rolls round the groove, it rotates slowly about its own centre in the opposite direction.
Patent GB-1137226-A (GB)
Title: Improvements in or relating to collapsible struts or ties
Inventor: GOODEARL ALAN RICHARD
IPC: A47B1/04
Filed: 1966-06-01
Abstract: 1,137,226. Collapsible struts. RISBORO FURNITURE Ltd. 31 May, 1967 [1 June, 1966], No. 24508/66. Heading E2F [Also in Division A4] A strut or tie supporting a flap 9 of a table 6 comprises two parts 2, 3 hinged together at 11 and to the table at 4 and to the flap at 7, the strut taking up a supporting position in which the hinge points 4, 7, 11 are either in or just out of alignment, and a lever 16 pivoted to the flap with one end close to an edge thereof is used manually to press the strut downwardly so that it collapses. A tension spring 12 extends between anchorages (13, 14) or the parts 2, 3.
Patent GB-1178427-A (GB)
Title: Selective Conversion Process
IPC: C10G45/64
Filed: 1967-05-26
Abstract: 1,178,427. Cracking catalysts. ESSO RESEARCH & ENG. CO. 26 May, 1967 [7 June, 1966], No. 24595/67. Heading B1E. [Also in Divisions Cl and C5] A catalyst for selectively hydrocracking straight-chain hydrocarbons contained in a hydrocarbon feedstock comprises a rare earth metal-containing crystalline aluminosilicate zeolite having uniform pore openings of less than 6 Angstrom units. The zeolite may be zeolite A or natural or synthetic erionite. It may be base-exchanged with a rare earth metal. Rare earth metals are defined as those having atomic numbers from 57 to 71 inclusive, scandium and yttrium. The catalysts may also contain cadmium or zinc. A hydrogenation metal component such as cobalt, nickel, platium, palladium, ruthenium, rhodium, osmium or iridium in the form of the free metal, oxide, sulphide or mixtures thereof may also be included.
Patent GB-627954-A (GB)
Title: Improvements in permanent pipe joints
IPC: F16L13/02
Filed: 1947-09-09
Abstract: 627,954. Pipe joints. KOSSOWSKI. W Sept. 9, 1947, No. 24742. [Class 99 (i)] In a joint for connecting pipe ends a or a pipe end with branches of valves and fittings, in which the ends of the parts to be joined are. expanded and drawn on to an internal ring b the external surface of which is conically tapered towards both ends, the expanded ends are flared to an internal diameter greater than the external diameter of a cylindrical portion of the ring between its tapered ends so that the free ends of the pipes overhang this portion of the ring, and the joint consists of a weld filling the gap between the free edges and overhanging ends of the pipes and the ring. The ring shown consists of two symmetrical parts having a spigot-and-socket connection e, f.
Patent GB-1209556-A (GB)
Title: Preparation of 1-aroyl-5-dialkylaminoindolylacetic acids
Inventor: SLETZINGER MEYER
IPC: C07D209/28
Filed: 1968-05-23
Abstract: 1,209,556. 1 - p - Chlorobenzoyl - 2 - methyl - 5 - dialkylamino-3-indolylacetic acids. MERCK & CO. Inc. 23 May, 1968 [27 May, 1967], No. 24760/68. Heading C2C. 1 - p - Chlorobenzoyl - 2 - methyl - 5 - di - (C 1-5  alkyl) amino - 3 - indolylacetic acids are prepared by treating 1 - p - chlorobenzoyl - 2 - methyl-3-indolylacetic acid or a salt thereof with a di-(C 1-5  alkyl) haloamine in the liquid phase and thereafter, when a salt of the starting material is used, acidifying the reaction mixture.
Patent GB-361378-A (GB)
Title: Improvements in or relating to catalytic processes for the production of aliphatic acids and their esters
IPC: C07C51/12
Filed: 1930-08-20
Abstract: Acetic, propionic and other acids and their esters.--In the process for the production of acids and their esters by passing a mixture of an alcohol and carbon monoxide over an acid catalyst as described in Specification 283,989, [Class 2 (iii), Dyes &c.], the degree of hydration of the phosphoric acid or acid phosphate employed is maintained constant by treating the catalyst with liquid water.  The catalyst may be removed from the reaction chamber, treated with water, and then returned to the reaction chamber, especially when the reaction gases are passed in counter-current with a stream of liquid catalyst or where the liquid catalyst is passed in a stream or film through the reaction chamber; or water may be periodically condensed on to the catalyst by periodically cooling the reaction zone and/or increasing the pressure or by decreasing the flow of reaction gases and supplying sufficient water vapour to supersaturate them under the temperature and pressure obtaining in the process; or more than one such method may be employed.  The catalytic mass may consist of ortho- or pyro-phosphoric acid or their salts or mixtures of them and may contain promoters such as those described in Specification 317,867, [Class 2 (iii), Dyes &c.], namely copper or copper compounds.  In an example, a mixture of carbon monoxide, methyl alcohol and water vapour in proportions of about 60-65 volumes carbon monoxide, 1 \ba1/2\be-2 volumes water vapour and 1 volume of methyl alcohol vapour is passed at 190-210 atmospheres into a reaction vessel containing orthophosphoric acid with about 0,5 per cent of copper or copper compounds such as oxide formate or phosphate.  The addition of water to the catalyst is effected by cooling the reaction zone to 100 DEG  C. for 2 minutes every 24 hours or 4 minutes every 48 hours, or 14 minutes every 7 days; or by cooling the reaction zone to 200 DEG  C. while doubling the supply of water vapour and halving the supply of the other ingredients of the gas mixture, for 1 \ba1/2\be minutes daily or proportionately longer at longer intervals, the pressure in each case being maintained constant.
Patent GB-423054-A (GB)
Title: Improvements in or relating to firing mechanism for machine guns
IPC: F41A19/10
Filed: 1933-09-11
Abstract: 423,054. Automatic guns. COLT'S PATENT FIRE ARMS MANUFACTURING CO., Hartford, Connecticut, U.S.A.-(Assignees of Moore, F. T., and Tansley, G. H.) Sept. 11, 1933, No. 25105. Convention date, Oct. 18, 1932. [Class 92 (ii)] Relates to trigger-mechanism for automatic guns of the recoiling-barrel type, and consists in providing two independently - movable triggers, one 27 of which is adapted to engage and release a pawl 19 for holding the breechblock 5 open, the other 26 being adapted to engage and move a lever 17 which releases the firing-pin sear 14 on the breech-block when the latter is in closed position. The triggers are shown pivoted close together on a common axis 28 so as to be operated by one hand of the gunner. Means are provided to hold one of the triggers in operative position so that automatic repetitive operation may be started and stopped by operating or releasing the other trigger. As shown, the buffer-tube 7 may carry a rotary sleeve having a hook 31 to hold down the trigger 26. Automatic repetitive action of the gun takes place if both triggers are depressed, but depression of trigger 26 when the breech-block is forward will cause the firing of a single shot only, and depression of trigger 27 when the breech-block is open will prepare the gun for firing by subsequent depression of the trigger 26. Specifications 133,329, 219,932, [both in Class 92 (ii)], and 391,587 are referred to.
Patent GB-462547-A (GB)
Title: Improvements in current supply arrangements for operating electromagnetic relays
IPC: G08G1/02
Filed: 1935-09-10
Abstract: 462,547. Electromagnetic switches. AUTOMATIC ELECTRIC CO., Ltd., PREIST, T. P., and THOMPSON, G. W. Sept. 10, 1935, No. 25189. [Class 38 (v)] A current supply arrangement for electromagnetic relays which may be controlled by vehicleactuated pressure - operated switches in road - signalling equipments is arranged so that the potential normally across the pressure-operated switch is, by means of a potentiometer arrangement, made considerably less than the voltage of the D.C. supply mains whilst when this switch is closed a rush of current sufficient to produce reliable operation of the relay is produced by the charging or discharging of a condenser in the circuit. As shown in the Figure, the pressure-operated switch is normally connected in series with a low resistance winding of the relay across a high resistance X, a second high resistance Y of unequal value to X being in series with this combination across the mains, the latter resistance being shunted by a condenser C of high capacity. Normally, only a proportion of the supply voltage is across the switch, the remainder being across the condenser. When the pressure-switch D is closed, however, the sudden rush of charging current to condenser C produces a reliable operation of the relay. The consequent changing over of the relay contact a1 completes a maintaining circuit for a high resistance winding of the relay in series with the resistance X until the pressure switch is opened. In a modified arrangement, Fig. 2 (not shown), the relay is further maintained in the operated position after initial operation in the manner previously described by a second contact of the pressure switch which is closed bv further movement of the vehicle. The arrangement described may be modified so that the relay operates by the discharging and not the charging, of the condenser. Specification 433,624 is referred to.
Patent GB-1533051-A (GB)
Title: Railway track tamping machine
IPC: E01B27/13
Filed: 1976-06-18
Abstract: Track-tamping machine (1) for compacting the ballast beneath a plurality of sleepers (S1, S2, etc.) of a track, having tamping tools (12-15), mounted on the tamping-tool frame or an intermediate carrier (18), and vertical-adjustment, vibration and feed drives (22; 21; 19, 20) assigned to said tamping tools. In each case two tamping tools (12, 13; 14, 15), which can be adjusted with respect to each other in the track longitudinal direction and can dip together into a space (F1, F2) between the sleepers, form an expanding tamping-tool pair (16, 17). Only two such expanding tamping-tool pairs or groups (16, 17), for the purposes of dipping into two directly adjacent spaces (F1, F2) formed between sleepers, are arranged one behind the other in the longitudinal direction of the track and form a twin expanding tamping assembly (7). Specific tamping is thus made easier, even when the distances between sleepers vary. The two expanding tamping-tool pairs or groups are mounted on a common tamping-tool carrier (18) and are connected to a drive (22) for common vertical adjustment. <IMAGE>
Patent GB-138299-A (GB)
Title: Improvements in power transmission gearings
IPC: F16H33/10
Filed: 1919-10-15
Abstract: 138,299. Fairweather, H. G. C., (Aktiebolaget Gyro). Oct. 15, 1919. Conveying rotary motion.-A device for transmitting power with change of speed between two alined shafts 1, 2 comprises an inclined disk 3 secured to the shaft 1, embraced by a member 4 having a number of projecting rollers 8 engaging an endless zigzag cam slot 9 in a casing 10. Other rollers 12 projecting from the member 4 engage slots 14 in a number of arms 13 secured to the shaft 2. The form of the slot 14, Fig. 3, is so chosen that the relative movements of all points of the periphery of the member 4 with respect to the casing may be represented by a common curve. Assuming the shaft 1 to be the driver, the member 4 is oscillated and rotates at a speed dependent on the shape of the cam slot 9, transmitting power through the arms 14 to the shaft 2.
Patent GB-842028-A (GB)
Title: Improvements in or relating to setting wedges for collapsable props
IPC: E21D15/58
Filed: 1957-08-12
Abstract: 842,028. Pit props. EGGEMANN, W. and CAMPENHAUSEN, E. VON [trading as SCHWARZ KOMM.-GES., H.] Aug. 12, 1957 [Aug. 13, 1956], No. 25331/57. Class 20(2) [Also in Group XXV] A setting wedge for a telescopic pit prop is provided with a cap 11 for the wider, striking end 10. The cap is secured by a rivet 15 or interengaging depressions on an enlarged part of the wedge. The cap has reinforcing ribs 18.
Patent GB-615090-A (GB)
Title: Hair slides or barrettes
IPC: A45D2/14
Filed: 1946-08-24
Abstract: 615,090. Hair slides. TWINCO, Ltd., and LAUGHTON, M. Aug. 24, 1946, No. 25352. [Class 131] A metal hair slide 13 has a trough-shaped plastic moulding 11, Fig. 5, pressed onto its outermost limb 10.