baber/WOPTO huggingface dataset:
Patent GB-234928-A (GB)
Title: The manufacture of vat dyestuffs of the thioindigo series
IPC: C09B7/00
Filed: 1924-03-13
Abstract: Oxythionaphthenes and thioindigo dyes are produced by treating with an acid condensing agent an o-substituted-arylthioglycollic acid of the formula <FORM:0234928/2/1> in which Ar = a residue of a benzene or naphthalene ring, X = H2 or HAcyl, or = N-azocomponent, and Y = H or a metal, preferably a heavy metal.  The o-aminoarylthioglycollic acids may be produced as described in Specification 18292/14 by condensing the hydrolyzed reaction product of disulphurdichloride on primary aromatic amines with chloracetic acid; the azo dyes of the above general formula are prepared by coupling diazotized o-aminoarylthioglycollic acid with components such as phenols, naphthols, or their sulphonic acids; the dyes from the latter still contain the azo group which is split by reducing agents or when the dye is vatted : as condensing agents may be used chlorosulphonic acid and concentrated or fuming sulphuric acid with or without addition of a catalyst such as boric or phosphoric acid, or a salt or sulphide of a heavy metal.  When the condensation is conducted at a low temperature there may be first formed the oxythionaphthenes or naphthoxypenthiophenes which yield the dyes on oxidation.  According to examples, (1) the copper zinc or sodium salt of 1 - methyl-5-chlor - 2 - aminophenyl-3-thioglycollic acid (obtained from o-toluidine according to Specification 18292/14) is treated with a mixture of chlorsulphonic and fuming sulphuric acid; the product dyes animal and vegetable fibre in fast grey-blue to dark blue shades; similar dyes are obtainable from the 4-chlor, 4-chlor-6-methoxy-, and 4 : 6-dichlor-compounds of 1-aminophenyl-2-thioglycollic acid; (2) 1-methyl-5-chlor-2-aminophenyl-3-thioglycollic acid is diazotized, coupled with b -naphtholdisulphonic acid R, and the product treated as in Ex. 1; the resulting dyestuff by reduction yields the same dyestuff as that of Ex. 1; (3) 2-aminonaphthalene-1-thioglycollic acid is treated with acetic anhydride in alkaline solution and the acetyl compound treated with chlorsulphonic acid below 0 DEG  C.; by pouring on to ice the 2-acetylamino-1 : 8-naphthoxypenthiophene is precipitated and is oxidized by air to a green-blue vat dye.ALSO:Copper, zinc, and heavy metal salts of o-amino-arylthioglycollic acids are referred to.  The copper salt of 1-methyl-5-chlor-2-aminophenyl-3-thioglycollic acid is prepared by adding copper sulphate to a solution of the sodium salt.
Patent GB-123878-A (GB)
Title: Improvements in or relating to Gas or Electric Cookers and Solid Fuel or Refuse Burning Stoves adapted to be used in Combination.
Inventor: JENKINS EDGAR JACKSON
IPC: F24C11/00
Filed: 1918-04-18
Abstract: 123,878. Jenkins, E. J., and Smith, A. S. April 18, 1918. Combined or convertible solid fuel and gas or electric stoves.-A closed solid-fuel stove a and a gas or electric cooker e are adapted to be used in combination, the hot gases from the stove a being led through a flue g surrounding or partly surrounding the cooker and passing under the hot plate of the latter, which may be formed with depressions or partitioned-off portions to receive removable gas rings or burners (not shown). The stove a is preferably designed as a, hot-water boiler and rubbish incinerator, being fitted with a hopper b into which fuel is charged for continuous burning, and its top may serve as a hotplate. The joint at x between the stove and the cooker may be readily disconnected.
Patent GB-1071049-A (GB)
Title: Bearing assembly
Inventor: PETRIE JAMES ALEXANDER
IPC: F01D21/04
Filed: 1966-02-15
Abstract: 1,071,049. Gas turbine engines - bearings. ROLLS-ROYCE Ltd. Feb.15, 1966, No. 6693/66. Heading F1G. [Also in Division F2] A shaft (10) Figs. 1 and 2 (not shown) of a gas turbine jet propulsion engine, carries a compressor (not shown) and a turbine (11); and is rotatably mounted within a roller bearing (12). The latter has an inner race (13) which is integral with the shaft (10), an outer race (14) and rollers (15). The outer race (14) is mounted within and spaced by an annular space (16) from a cylindrical portion (17) of a housing (18). The space (16) is provided with a hydrodynamic squeeze film of oil which effects concentricity of the bearing (12). The housing (18), having an endflange (21), is secured to a fixed structure (22) by three equi-angularly spaced-apart bolts (23) which are frangible when subjected to a predetermined shear force. The fixed structure (22) has an opening (24) which receives the cylindrical portion (17) of the housing (18) an annular  gap (25) being provided between the opening (24) and the cylindrical portion (17). The end-flange (21) of the housing (18) is also secured to the fixed structure (22) by six bolts (30), each of which is passed through aligned apertures (26, 27) in the flange (21) and fixed structure respectively. A clearance (33) is provided between each bolt (30) and the respective apertures (26, 27), the radial extent of the clearance (33) being equal to the radial extent of the annular gap (25), so that, if the frangible bolts (23) fail, the housing (18) can "float" within the fixed structure (22). The heads (31) and nuts (32) of the bolts (30) respectively engage the flange (21) and the fixed structure (22) so as to effect damping. In a modification the housing (18) is provided with angularly spaced-apart frangible spigots (34) Fig. 3 (not shown) which are located in recesses (35) in the fixed structure (22).
Patent GB-249122-A (GB)
Title: Process for the provision of protective layers on reflecting bodies
IPC: C03C17/36
Filed: 1926-03-10
Abstract: 249,122. Metallique, and Dural. March 11, 1925, [Convention date]. Mirrors.-In the production of mirrors and like reflecting devices, a layer of water glass is applied between the reflecting layer and the usual protective metallic coating. A suitable composition comprises water glass, caustic potash lye and water, the composition being boiled before application.
Patent GB-162869-A (GB)
Title: Improvements relating to apparatus for washing bottles or the like
IPC: B08B9/36
Filed: 1920-03-05
Abstract: 162,869. Rodwell, W. H. March 5, 1920. Bottles, cleaning. - A device for brushing the exterior neck portion of bottles fitted for " Crown cork " closing device, while the internal and exter. nal surfaces are being cleaned, con. sists in a. two-part brush g, held between a nut a, and a sleeve e attached to the internal brush shaft by a thumb-screw f.
Patent GB-751639-A (GB)
Title: Fluid-flow regulator, particularly for gas-fired continuous flow type waterheating apparatus
IPC: F24H9/20
Filed: 1954-03-09
Abstract: 751,639. Fluid-actuated valves. VAILLANT, H., [trading as VAILLANT KOMM.-GES., J.]. March 9, 1954 [March 12, 1953], No. 6781/54. Class 135. A flow regulator, e.g. for gas-fired, continuous-flow water heaters in which the valve 5 is controlled by differential pressure arising at a throttling point in the flow passage, e.g. the venturi 8 acting through the diaphragm 2, has an auxiliary passage 14 which is continuously open during the regulating operation, bypasses the regulating valve and is connected in parallel with the throttling point. Normally water from the inlet 6 lifts the valve 5 to abut the diaphragm and flows through the passage 7, venturi 8 and pipe 9 to a heat exchanger, the valve 5 maintaining a constant pressure drop across the venturi which through the diaphragm 2 maintains a constant heat supply to the heat exchanger. Further water to the exchanger for reducing the outlet temperature is controlled by the needle valve 13 by-passing the venturi. Errors in regulation by the valve 5 due to a force produced by the flow of water past the valve which tends to move the valve in a closing direction and which force increases with the increase in inlet pressure are avoided by allowing water at the increased pressure to pass through the opening 14. The size of the opening 14 may be varied by a piston carried by the needle valve.
Patent GB-1144749-A (GB)
Title: Piperazinones and processes for their preparation
IPC: C07D471/04
Filed: 1967-02-13
Abstract: 1,144,749. Piperazinones. NAUCHNOISSLEDOVATELSKY INSTITUT FARMAKOLOGII I KHIMIOTERAPII. 13 Feb., 1967 [12 Feb., 19661, No. 6795/67. Heading C2C. Novel piperazinones of the formula (and salts and addition compounds thereof) wherein n is 2, 3 or 4, R is H, alkyl or carbalkoxy and carbon atoms 2 and 3 may be shared by an aromatic ring, are prepared by condensing a 1,2-diamine, such as ethylene diamine or ophenylene diamine, with a compound of formula R.CHX.(CH 2 ) n .CHY.COOR<SP>1</SP>, wherein n and R are as defined above and X and Y represent chlorine and bromine and R<SP>1</SP> is H, Me or Et.
Patent GB-1489985-A (GB)
Title: Derailleur gear for a bicycle
IPC: B62M9/1242
Filed: 1975-02-18
Abstract: 1489985 Chain-shift change-speed gear R HURET and J HURET 18 Feb 1975 [18 Feb 1974] 6841/75 Heading F2D A chain-shift change-speed gear for a bicycle has a mounting plate assembly 11a, 11b, for guide and tension sprockets 7, 8, carried, for chain tensioning movement in planes parallel to that of the cycle road-wheel, on a first support parallelogram linkage 3, lying in a plane perpendicular to the axis 2 of the road-wheel spindle and having one side formed by a rigid connecting member 4 forming a part of controllable means for producing ratio-selecting movement in directions transverse to the plane of the road-wheel. In one embodiment, Figs. 4 and 5, not shown, the transverse movement is provided by a simple guided slide-bolt (23), whilst in Figs. 1 and 3, shown, a second parallelogram linkage 1 in a plane parallel to that of the axis 2 of the wheel spindle, carries the first support parallelogram linkage 3. One U-shaped arm la of the second parallelogram linkage 1 is secured to the cycle frame, whilst its opposite arm 4, also U-shaped, and pivoting on pins 5 on side arms 1b, 1c, forms the rigid connecting body which constitutes also one arm of the first support parallelogram linkage 3, for which purpose it has ears 4b, 4c, pivoted at 4i on side arms 3a, 3c, pivoted to the opposite arm 3b, one pivot 3d of which forms the spindle bolt 9 of the chain guide sprocket 7 and also serves to attach the mounting plate assembly 11 to the support linkage 3. Arms 12a, 12b of a torsion coil spring 12 react on lugs 3g on the arm 3b and lie on the plate 11c, to bias the assembly about the spindle 9 in the chain tensioning direction 13. Stops 3f, 3h limit the pivotal movement. In Figs. 4 and 5, not shown, the connecting body 4 of Fig. 1 is secured to a square-sectioned pin (23) slidable transversely of the road-wheel in a guide cylinder (21) fixed to the cycle frame (at 22) and shifted transversely by a spring- opposed Bowden cable (29) acting through a lever (26).
Patent GB-1378901-A (GB)
Title: Web drive apparatus
IPC: G11B15/26
Filed: 1971-03-16
Abstract: 1378901 Feeding record tapes RCA CORPORATION 10 March 1972 [16 March 1971 (2)] 6967/71 and 6971/71 Heading G5R [Also in Divisions F2 and G3] A variable speed and/or tension drive of a web 2 such as a magnetic tape, in helical scan video recording and/or reproducing apparatus, comprises a web-contacting capstan 14 driven by a motor 26 through an elastic belt 34, the radial thickness of which, and hence the speed ratio between an input pulley 30 and the capstan 14, is varied by varying belt tension by adjusting the centre distance between the pulley 30 and capstan 14. In Fig. 1, two such capstans 14, 16, driven by separate belts 34, 36, drive the web 2 at spaced points along its length, and the belts are automatically oppositely tensioned differentially, to maintain a predetermined web tension, by pivoting the drive motor 26 about an axis 42, by a servo 70 controlled by an error signal 68 from a comparator 62, responding to phase displacement between transducers 50, 52 spaced along the web 2. Guide rollers 18, 20 press the web against the capstans 14, 16, as it traverses a helical slot 8 in a drum 4, over a main transducer 10 moved in the slot 8.  In Fig. 3, not shown, the web (98) is driven by contact with the outside of an elastic belt (96) at a point where the belt engages an input pulley (82), the belt also passing around an idler pulley (86), adjustable towards and away from the input pulley (82) to vary the belt tension and thus belt thickness and speed-ratio. Figs. 2 (a) and (b), not shown, explain the manner in which belt thickness governs the speed ratio.
Patent GB-572436-A (GB)
Title: Improvements relating to machine guns
IPC: F41A19/02
Filed: 1939-03-03
Abstract: 572,436. Automatic guns. BOULTON PAUL AIRCRAFT, Ltd., and FREEMAN, J. O. March 3, 1939, No. 7058. [Class 92 (ii)] Relates to sear control devices for enabling single shots to be fired or bursts of continuous fire with a controlled number of shots. According to the invention, the sear is held in the continuous-fire position by a latch under the control of an escapement device which is adjustable to perform any desired number of steps after which the latch is withdrawn to enable the sear to re-engage the bent. In the form shown, a remotely-controlled triggermotor 26, when actuated for firing, imparts sliding movement to the left to a cam-bar 24 which lifts the sear-operating member 10 through the medium of a vertically-sliding plate 12. Inclines 36, 38, 40 on the cam-bar engage a roller 30 on the plate to raise the member 10, hold it in raised position and allow it to fall sharply. The full travel of the bar 24 permits a single shot to be fired, the return of the bar 24, under the action of a spring in the motor 26, being without effect on the plate 12, since the roller 30 can move freely in a slot 28. Fig. 8 shows a detent 46 controlled by a solenoid 56 for engaging a projection 48 to arrest the cam-bar with its horizontal surface 38 under the roller 30 to hold the member 10 raised for continuous fire, the detent being released from a distance by closing switches 78, 60 to energize the solenoid 56. On release of the detent, the cam-bar can extend its movement to release the member 10 and stop the fire. The detent 46 can also be released after a burst of fire by closing the electric contacts 76, 62 by means of a rotary cam 74 having ratchet teeth 72 engaged by a pawl 70 reciprocated by the breech mechanism. The cam 74 is provided with means to set the parts so that a controlled number of shots may be fired continuously. A safety detent, similar to the detent 46, may engage the cam-bar to prevent its sliding movement.
Patent GB-178420-A (GB)
Title: Improvements in and relating to flushing cisterns
IPC: E03D1/18
Filed: 1922-03-10
Abstract: 178,420. Chapuis, L. April 12, 1921, [Convention date]. Valve-discharge water-waste preventers.- In normally empty cisterns, a lever 9 pivoted at 14 is provided, having a round end 10 adapted, when a cord 5 is pulled, to engage a pivoted lever 31 from which it is liberated by the action of the float 33. The cord is attached to a weighted lever 7 rigid with the arms 17, 21, and 9 all of which move about the pivot 14. Thus the supply valve 23 is opened and the valve 27 closed when the cord is pulled. The cistern thereupon commences to fill. When the float lever has been raised sufficientlv, it meets the end of a screw stop carried by the lever 31, turns the lever about its pivot 30, and allows the system of levers pivoted at 14 to fall back to original position, in which the valve 27 is open.
Patent GB-327829-A (GB)
Title: Means for mounting electric lamps for studio lighting and analogous purposes
IPC: G03B15/02
Filed: 1929-03-05
Abstract: 327,829. General Electric Co., Ltd., Randall, E. L., and Debenham, W. F. S. March 5, 1929. Electric lamp lanterns; mounting electric lamps in lanterns.-In lamp projection apparatus in which the direction of he beam may be varied and suitable for cinema studio lighting, flood lighting, &c., the hood 1 carying a reflector 14 is 'tiltably mounted on a stand, and the lamp is slidably mounted within and supported from the hood so that it is always maintained upright. The loop 3 supporting the lamp 2 is carried by hollow trunnions 25 passing through and rotating in brackets 12. The vertical position of lamp and loop is maintained by a vertical rod 16 fixed to a trunnion 25 and movable only in a vertical direction through the sleeve 17 or with the sleeve which can move only in a horizontal direction on a rail 19. Side rails 5 moving on brackets 6, the trunnions 7 of which journal in parts 4 of the stand, give axial adjustment of the hood to obtain balance after tilting. The brackets 12 are axially movable on rails 13 within the hood by means of threaded bottom rails, enabling focussing after tilting and balancing. Fine adjustment of angle of tilt and locking are obtained by a worm and worm wheel brought into engagement by an eccentric 10. Cooling air enters the hood through one hollow trunnion 25 and pipe 22, and through baffled openings 24.
Patent GB-1137891-A (GB)
Title: Improvements in or relating to programmed teaching apparatus
Inventor: KUSCH LOTHAR
IPC: G09B3/08
Filed: 1966-02-18
Abstract: 1,137,891. Programmed learning apparatus. W. GIRARDET GRAPHISCHE BETRIEBE UND VERLAG. 18 Feb., 1966, No. 7244/66. Heading G5C. A programmed learning apparatus comprises a box or the like 1 provided with a cover 2 and sub-divided into individual compartments which receive sheets or the like 10, 11 for the pupil's answers and provided solutions respectively and which are so separated from one another by locking elements 9 as to leave between the elements 9 and the cover 2 a slot through which the sheets can pass. As shown the cover over the compartments 4 and 5 is opaque and is cut away over compartments 3 enabling the pupil to write on the sheet 10 while sheet 11 with the provided solutions is covered. Sheets 10, 11 are joined by a web 22 and provided with a tag 23 and are pulled between the slot between the elements 9 and the cover 2 by inserting the fingers through cut-away portion 16 and pulling tag 23 which is torn off at tearing edges 20 or 21 along perforated line 24. In a modification (Figs. 4 and 5, not shown), a locking element is disposed between compartments (7) and (8) to prevent the sheets (10, 11) being pulled across. In another modification (Fig. 7 to 8, not shown), the cover is provided with a pusher with an attachment (41) which engages a cut-away portion (42) of the element (9) and which allows sheets (10, 11) to be moved in the direction of the arrows after the pupil has written his answers only when it is disposed above the compartment (8). The pusher may then be withdrawn to reveal the solutions provided which were rendered invisible when in compartment (4) by the opaque cover (2) above it.
Patent GB-1165441-A (GB)
Title: Railway Coupler with Reversible Lock-Set
Inventor: DEPENTI KENNETH LOUIS
IPC: B61G3/18
Filed: 1967-02-15
Abstract: 1,165,441. Willison coupler lock-set device. MIDLAND-ROSS CORP. 15 Feb., 1967 [30 March, 1966], No. 7292/67. Heading B7T. A Willison coupler is provided with a lock-setting mechanism which can be operated by moving the coupler operating rod, which action is different from the Willison couplers of prior art where the lock set piece 9 is itself provided with a handle so that it may be lifted manually to a lockrelease position. The lock set piece 9 has a recess 25 similar to the recess 26, Fig. 8, of the prior art, but in this ease the recess is formed by a leaf spring such as 30 or a sprung pivoted leg or thrower cam follower (54), Fig. 3 (not shown). In Fig. 6 the lockthrowing cam 7 is shown engaging the lock 6 and supporting the lock against gravity return to the protracted or uncoupled position of Fig. 2 (not shown) and the cam 7 is in turn supported against the spring 30. In the Fig. 6 position the anticreep element 8 has been carried to an ineffective rearmost position and an indicator 10 is visible, and it is clear that by turning the shaft 11 on which the cam 7 is mounted the spring may be deflected to allow 36 to pass and the lock 9 to drop forwards to the coupled position.
Patent GB-910523-A (GB)
Title: Improvements relating to the manufacture of electronic valves
Inventor: LANE CLAYTON ARBUTHNOT
IPC: H01J19/00
Filed: 1958-03-06
Abstract: 910,523. Making thermionic valve grids; removing metal by fusion. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 27, 1959 [March 6, 1958], No. 7335/58. Classes 83 (2) and 83 (4). In the manufacture of thermionic valve grids 1 by winding grid wire 1 into nicks on parallel support rods 2, severing the wire after the correct number of turns and then winding the next grid on the same support rods, the loose end 4 of grid wire at the commencement of each grid is removed by discharging a condenser through it upon contact with an electrode 6 during the winding operation. The winding assembly 3 is connected by brush 5 to one side of condensers 7-14 and to a D.C. source. The other side of the condensers are connected through switches 15, 16, which are used to select the required number of condensers, and switch 20 to the D.C. source. During winding the switch 20 is actuated by a cam to close a discharge circuit through variable resistance 19 to the electrode 6 which is contacted by the wire end 4 as the grid assembly rotates and thus causes fusion of the wire end.
Patent GB-115438-A (GB)
IPC: B63C11/30
Filed: 1918-05-02
Abstract: 115,438. Drõgerwerk H. & B. Drõger. Aug. 23, 1913, [Convention date] Divers' dress. -In a diver's dress, the usual footweights are reduced in size and a further weight is arranged near the hip. This further weight g is preferably suspended between the diver's legs by a strap d connected to the chest and back weights a, b, and may have flanges h so as to form a seat.
Patent GB-180455-A (GB)
Title: Improvements connected with propellers
IPC: B64C11/04
Filed: 1921-03-09
Abstract: 180,455. Cave, T. R. Cave-Browne-, March 9, 1921. Screw propellers.-The centre of a wood screw propeller is secured between front and rear driving-plates which are coupled by segments passing between the blade roots, and the rear plate is bolted to a flange on the driving-shaft. Driving- plates 11, 12, Fig. 1, having flanges and centring- portions 9, 10 are held up against the central part 6 of the wood propeller by cross-pieces 13. These pieces, which pass between the blades 16, are bolted at 15 to the driving-plates, and in addition castellations 17 thereon engage corresponding parts on the plate 12. The parts 13 may be stiffened by flanges 14, Fig. 4. A clearance x is provided whereby the plates can be drawn up should the wood portion shrink. The plate 11 is bolted to a flange on the driving-shaft 24. The hub may be bored to receive a central metal hub which is secured on the crank-shaft, the driving- plates being connected as described above.
Patent GB-416429-A (GB)
Title: Improvements relating to electric horns
IPC: G10K9/15
Filed: 1933-03-14
Abstract: 416,429. Electric horns. LUCAS, Ltd., J., and MASON, S. A., Great King Street, Birmingham. March 14, 1933, No. 7688. [Class 13.] A diaphragm horn is provided with means connecting the diaphragm and armature which provide a space therebetween into which extends a contact breaker actuated by means mounted coaxially with the diaphragm. As shown, the diaphragm a and armature d, Fig. 1, are connected by a pair of side pieces e, Figs. 1 and 3, between which are the fixed and moving contacts h, g respectively, the latter being mounted on a spring blade f, an extension of which is engaged by an adjustable pinj mounted coaxially with the diaphragm. The contact breaker may be additionally adjusted by a screw l, Fig. 3, which coacts with the end of a supporting bracket k upon which it is mounted.
Patent GB-212426-A (GB)
Title: Improvements in locking pins
IPC: F16B21/12
Filed: 1923-03-19
Abstract: 212,426. Rowbotham, Sir T., and Booth, S. March 19, 1923. Pins for cottering.-A headed pin 4, used for locking together two parts, such as a wheel cap 1, screwed into a hub 2, the inner end of which pin is inaccessible when in use, is held against removal by an auxiliary pin 8 driven into a groove 6 formed in the pin 4, the leading end of the pin 8, being deflected outwardly by the curved inner end 7 of the groove to engage the interior wall of the part 2.