baber/WOPTO huggingface dataset:
Patent GB-1116279-A (GB)
Title: Improvements in or relating to the manufacture of valves from austenitic steels
Inventor: TETLEY FREDERICK WILLIAM
IPC: F01L3/02
Filed: 1966-06-16
Abstract: Austenitic steels particularly suitable for the manufacture of I.C. poppet valves (see Division B3) have the following percentage compositions: -  <TABS:1116279/C6-C7/1> The steel may be solution heat-treated at 1050-1275 DEG C, after which it is induction-heated at a rate greater than 50 DEG C/min from 600 DEG C onwards to a like forging temperature.  A forged valve having a composition of steel 3 may be precipitation heat-treated at 675 DEG C for 6 hours. In known methods of valve production, the solution heat treatment followed if desired by precipitation treatment at 600-850 DEG C is carried out subsequent to the forging operation.
Patent GB-1105016-A (GB)
Title: Vacuum metallising plant, more particularly for metallising elongated articles, inter alia cylindrical or parallellepipedic articles
Inventor: CERESOLI MASSIMO
IPC: C23C14/50
Filed: 1965-06-25
Abstract: A brazing alloy for stainless steel parts comprises 40% copper, 5% zinc, 1% nickel and the balance silver.ALSO:Articles 8, to be coated with metal which is vapourized from a crucible 4, are rotated by supports 31, whilst the cage 11 carrying the articles is reciprocated vertically with respect to the crucible by a cam acting through levers <PICT:1105016/C6-C7/1> on a rod 41.  The metal is heated electrically and the crucible is cooled by fluid in pipes 5, 6. The distance between the top and bottom plates 13, 14 of the cage is adjustable.
Patent GB-269314-A (GB)
Abstract: 269,314. British Thomson-Houston Co., Ltd., and Griffiths, L. March 26, 1926. Systems, electric; contacts, arrangement of external.-A dual ignition system in which either a magneto 1, 2 or a battery and coil 7, 5, 6 may supply current is arranged so that the magneto contact-breaker 3 and distributor 4 serve both the magneto and coil. The change over from the magneto primary 1 to the coil primary 5 is effected by a rotary arm 8 movable over fixed segments 10, 11, 12, the central segment being connected to the interrupter. A segment 13 moves synchronously with the arm 8 over contacts 14, 15, 16, the contact 15 being connected to the distributor 4 and the contacts 14, 16 to the magneto and coil secondary windings. Specification 22228/13 is referred to.
Patent GB-833187-A (GB)
Title: Improvements relating to the production of pure aluminium hydroxide
IPC: C07F5/06
Filed: 1958-08-21
Abstract: Pure aluminium hydroxide is obtained by hydrolysing an aluminium monoalkyl glycolate, which is prepared by dissolving aluminium in a glycol monoalkyl ether and filtering off any undissolved solids. Hydrogen is also evolved.  Suitable glycols include ethylene-propylene- and butylene glycols and polymerized glycols such as diethylene glycol with one etherified OH group.ALSO:In the production of aluminium hydroxide by the hydrolysis of an aluminium monoalkyl glycolate, the glycolate is prepared by dissolving aluminium in a glycol monoalkyl ether, preferably in the presence of preformed aluminium monoalkyl glycolate, e.g. 1% based on the aluminium, as an activator.  Suitable glycols include ethylene glycol, propylene and butylene glycols, and polymerized glycols, such as diethylene glycol, in which one OH group is etherified with methyl, ethyl or butyl alcohol.  Ethylene glycol monomethyl ether will dissolve 99.5% aluminium at 60 DEG  C. and the higher ethers at boiling.  An incubation period is frequently required.  On hydrolysis the glycol monoalkyl ether is regenerated.
Patent GB-1083534-A (GB)
Title: Improvements in or relating to optical masers
Inventor: EDWARDS CHARLES FLAVIUS
IPC: H01L23/473
Filed: 1966-06-16
Abstract: 1,083,534. Lasers. WESTERN ELECTRIC CO. Inc. June 16, 1966 [June 23, 1965 (2)], No. 26949/66. Heading H1C. A laser comprises a primary optical cavity resonator formed by first and second reflective elements and has disposed in the cavity an optical energy divider which diverts a portion of the energy from the primary cavity on to a third reflective member disposed external to the primary cavity. In the laser shown in Fig. 1 a gaseous active medium, e.g. helium-neon is disposed in an optical cavity formed by mirrors 11, 12 one of which or both may be partially transmissive and is pumped by an RF discharge as shown or by D.C. excitation. Disposed within the cavity is a half silvered mirror acting as a beam splitter which transmits half of the optical energy incident thereon from the active medium on to mirror 12 and reflects half on to mirror 14. By selecting the difference between L 2  and L 3  to be much greater than the wavelength of the stimulated emission a small change in the wavelength will result in a large change in the reflection coefficient R looking along axis 15 from the active medium towards beam splitter 13. Since this coefficient substantially controls the mode losses the side frequencies of the laser spaced by the order of 150 megacycles from the desired centre frequency will be characterized by significantly lower reflection coefficients and will be suppressed. The distance L 3  is normally varied. In the arrangement of Fig. 3 (not shown) the beam splitter is positioned between mirror 11 and the active medium so that energy propagating to the right along the primary cavity axis towards the beam splitter is split, a portion proceeding on through the active medium to primary cavity mirror 12 and the remainder proceeding to auxiliary cavity reflector (14<SP>1</SP>). A secondary resonance is established for energy propagating between reflectors 11 and (14<SP>1</SP>) via the beam splitter which affects the gain curve of the primary cavity, Fig. 4 (not shown), the secondary cavity being made to have a narrower band reflective characteristic than the primary cavity so that unwanted longitudinal modes are suppressed. The auxiliary cavity is tuned by varying the distance between the beam splitter and the auxiliary reflector.
Patent GB-1256220-A (GB)
Title: Receiver including an n-phase demodulator
IPC: H04L27/00
Filed: 1970-06-04
Abstract: 1,256,220. Automatic phase control systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 4 June, 1970 [7 June, 1969], No. 27011/70. Headings H3A and H4P. In a receiver for demodulating a signal modulated to any one of n-phases, the local carrier is synchronized with the received carrier by detecting in which of n-phase sectors the signal lies, and also by detecting whether the signal is phase advanced or phase retarded with regard to a reference vector within that sector, to produce a phase adjusting signal for the local carrier. Received signals and quadrature signals from local carrier generator 9 are fed to mixers 5, 6 to produce quadrature signals a(t), b(t) at 15, 16. These signals are then combined by resistors 10, 13 and inverter 11 to produce further signals a(t)-b(t) and a(t)+b(t) at 17, 18, the four signals are sampled at the data clock rate by gates 23 ... 26, and the output from gate 26, and the inverted output from gate 25 are added at 28. The resulting three signals, which are either binary "0" or "1" depending in which octant the received signal lies, are fed to AND gates 30 ... 37 each of which is actuated by an input signal in a particular octant. Further tappings on resistors 10, 13 are coupled via samplers 59, 60, 61, 62 to gates 63 ... 70 which detect in which half of a particular octant a signal lies. For example if the signal lies in the first octant, the outputs from 23, 28, 24 are all "1" and gate 30 is activated to provide the required output signal to 38 and also to provide a "1" on one of the inputs to AND gate 63. Depending on which half of the first octant the signal is in, sampler 60 will feed a "0" or a "1", to the other input of AND gate 63, and the resulting 0 or 1 output is fed via OR gate 71 to control the phase of local carrier source 9. Source 9 comprises a high frequency oscillator 77 which feeds, to switches 81, 82, pulse trains which are 180 degrees phase displaced. Switch 81 is normally closed to feed to pulses to divider 78 to produce the required local carrier signal and the 0 or 1 error signal from OR gate 71 actuates switch 81 or 82 to omit or add an input pulse to divider 78 thus shifting the phase. The succession of 0's and 1's from gate 71 are also integrated by low pass filter 87 to provide long term frequency adjustment of oscillator 77. Sampling gates 23 ... 26, 59 ... 62 are actuated at the data rate by a local clock source 42. This is synchronized with the received data rate by feeding the outputs from mixers 5, 6 to a circuit 44 tuned to half the clock frequency, and then frequency doubling to regain the clock frequency. The resulting signal is applied to a gate 48 which is only opened if the signal from circuit 44 exceeds a predetermined value.
Patent GB-821957-A (GB)
Title: Process for obtaining uranium tetrafluoride more especially in a nuclear-pure form
IPC: C01G43/06
Filed: 1956-09-04
Abstract: Uranium tetrafluoride is prepared by heat treating uranyl oxalate in the absence of oxidizing gases at temperatures below 900 DEG  C. to form uranium dioxide which is then treated with gaseous hydrogen fluoride at a moderate temperature, for example 100 DEG  to 150 DEG C.  The process can, if desired, be effected in a single stage in a rotary tube furnace, the first part of which serves to decompose the oxalate and the second part to fluorinate the oxide formed.  The oxalate decomposition preferably takes place at 450 DEG  to 600 DEG C., in a carbon dioxide atmosphere which may be obtained by recycling the off gases from the oxalate decomposition furnace. Suitable reaction vessel linings are aluminium, calcium fluoride or graphite or copper, nickel or precious metals.  If the fluorination takes place in a separate apparatus a lining or polyfluoro-ethylene may be employed.
Patent GB-631066-A (GB)
Title: Improvements relating to maximum demand meters
IPC: G01R11/60
Filed: 1947-10-09
Abstract: 631,066. Indicating and recording apparatus. ENGLISH ELECTRIC CO., Ltd., and FENTON, L. R. Oct. 9, 1947, No. 27116. [Class 106 (iv)] [Also in Group XXXVI] In a maximum demand meter, which essentially includes a sun and planet differ ential gear, Fig. 1, during each measuring period a first member, for example a meter disc or rotor 10, drives one sun-wheel 11 of the differential gear to produce equal and opposite rotation of the other sun-wheel 18, whereby the latter moves a third member, for example a pusher arm 19 against the restraint of control spring 22 secured to shaft 17 fixed to sun-wheel 18, to advance a third member, for example a pointer 20, and at the end of each measuring period the normally stationary planet carrier 14 is released to zeroize the arm 19. The planet carrier 14 extending within hollow sun-wheel shafts 12, 17 carries at one end a brake drum 24, Fig. 2, and during each measuring period a spring 38 urges a lever arm 28 to press brake pads 25 on to drum 24 and a tension spring 39 co-operating with spring 38 urges a lever arm 36 to press a roller 29 into contact with the surfaces of high- and lowspeed cams 30, 31. If the speeds of cams 30, 31 are respectively one revolution per minute and one revolution per 15 minutes, then once every 15 minutes the notches in cams 30, 31 are in coincidence opposite roller 29 and arm 36 moves downwardly and part 36a then engages screw 40 and the pads 25 are lifted from the brake drum 24. The planet carrier 14 is therefore released and control spring 22 operates to force pusher arm 19 to zero. The cams 30, 31 are positioned appropriately in a synchronous motor drive geared for fast and slow speeds, Fig. 3 (not shown), wherein provision is made for setting the attitudes of the cams and a pointer rotates with the slow speed cam. In a modification a solenoid controlled by a time switch lifts the brake on planet carrier 14 at the end of each measuring period. In a further modification the sun-wheel 11 is driven step-by-step by an impulse device energized by a remote energy meter element.
Patent GB-871113-A (GB)
Title: Cyanine bases and undissociated cyanine dyes containing an azaindenyl nucleus
IPC: C07D487/04
Filed: 1957-08-29
Abstract: 5;7-Dimethyl-tetrazolo [a] pyrimidine is prepared by refluxing 5-amino-tetrazole and 2;4-pentane-dione in ethyl alcohol in the presence of piperidine.  7-Methyl-tetrazolo [a] pyrimidine is prepared by heating 4;4-dimethoxy-2-butanone with 5-amino-tetrazole in xylene in the presence of N,N-dimethyl-formamide.  Specification 632,808 is referred to.ALSO:Cyanine dye bases of the general formula:-<FORM:0871113/IV(c)/1> wherein R is an alkyl group, R1 is a methyltetrazaindenyl, pentazaindenyl or methyl-pentazaindenyl group, Z completes a benzoxazole or benzthiazole nucleus and d is 0, 1 or 2 are prepared by reacting a benzoxazolium or benzthiazolium quaternary salt having in the 2-position an alkylthio, arylthio or -(CH=CH)d-NR4R5 group (where R4 is acyl and R5 is aryl) with 5; 7-dimethyl-s-triazolo [2, 3-a ] pyrimidine, 7-methyl-tetrazolo [a ] pyrimidine or 5; 7-dimethyl-tetrazolo [a ] pyrimidine.  The dye bases of formula I may be quaternized by heating with an alkyl salt.  The dye bases wherein R1 is methylpentazaindenyl may be reacted with a further molecule of the same or a different reactive quaternary salt to give cyanine dyes of the general formula:-  <FORM:0871113/IV(c)/2> wherein R6 is alkyl and q is 0, 1 or 2.  Specification 632,808 is referred to.
Patent GB-177121-A (GB)
Title: Improvements in tools for inserting bolts in railway rail joints
IPC: E01B29/24
Filed: 1920-12-31
Abstract: 177,121. Nelson, J. Dec. 31, 1920. Rigid-jaw wrenches.-Relates to a tool for applying bolts to railway rail joints of the kind described in Specification 173,432, [Class 104 (ii), Railway and tramway permanent way &c.], wherein spring-pressed bolts having oval heads 8 are passed through corresponding apertures in the overlapping parts 10, 11 of the joint, and are turned so as to engage between lugs 9. A socket 1 having a handle 6 receives the other head 3 of the bolt, and a lever 4 is journaled on the socket and carries a hook 5 engaging the tread of the rail whereby the bolt head 8 may be passed through the joint by swinging the lever 4 to the left, and locked in position by turning the handle 6.
Patent GB-750441-A (GB)
Title: Improved internal combustion engines
Inventor: SMITH JAMES JOHN STEWART
IPC: F01L13/08
Filed: 1953-10-05
Abstract: 750,441. Starting. ARMSTRONG WHITWORTH & CO. (ENGINEERS), Ltd., Sir W. G. Nov. 9, 1954. [Oct. 5, 1953], No. 27286/53. Class 7(5) In an engine provided with inlet and / or exhaust valve operating means including at least one racking lever d mounted on a shaft j for oscillation, the shaft j is adjustable by a lever k to raise or lower the lever fulcrum to give three valve positions:- (1) the valve b is held off its seat to effect decompression, (2) the valve b is operated with considerable tappet clearance to reduce the valve-open period and produce a high compression of the charge, and (3) an intermediate position in which the valve b operates normally. The exhaust valve b which is guided in the cylinder head a, is shrouded at its seat by masking c, the valve being operated by the lever d actuated by a push rod e and tappet f from a cam g. The part of a shaft j on which the lever d oscillates is eccentric. The invention is applicable to both two and four stroke endings and in the latter case the inlet valve operating lever may be mounted on the same shaft as the lever d.
Patent GB-693546-A (GB)
Title: An improved extrusion process
IPC: B21C25/06
Filed: 1951-11-21
Abstract: 693,546. Extruding. FELTEN & GUILLEAUME CARLSWERK AKT.-GES. Nov. 21, 1951 [Feb. 1, 1951], No. 27298/51. Class 83 (iv). Sheathing.-A sheathing, e.g. of aluminium, is extruded around an electric cable by the reverse extrusion process in which the shaping of the material placed in the container of the press into a sheath is effected on the side of the material facing the pressure-applying member. The press comprises a container 1 and pressureapplying member 2 into which is screwed an insert 3 carrying a hollow mandrel 4 on bridgepieces 5, said mandrel being displaceably mounted in the closing plate 6 of the container. In one embodiment the die 7 of the press is provided on the pressure-applying member 2 and the nose 8 on the mandrel 4, Fig. 1. Alternatively, the die 7 may be provided on the mandrel 4 and the nose on the pressure member 2, Fig. 2. The die 7 or alternatively the nose is carried by a hollow support 10 axially adjustable by a hollow bolt 11. The container or the pressure-applying member is displaceable. In the embodiment in which the sheathed cable 9 passes through the mandrel 4, Fig. 1, the sheathng can be cooled by sprinkling it with water within the mandrel.
Patent GB-182048-A (GB)
Title: A new or improved locking device for gear and/or brake levers of motor vehicles
IPC: B60R25/00
Filed: 1921-10-14
Abstract: 182,048. Scrase, N. F. Oct. 14, 1921. Locking while standing. - Means for locking either the gear or brake lever of motor vehicles, or both, to prevent unauthorized use of the vehicle or movement thereof when starting the engine, comprises, as shown, a member e pivoted to an adjustable bracket b and adapted to hold the lever or levers in neutral or braking position respectively by means of its shaped end g and a baseplate a provided with lugs j adapted to receive a padlock-bar, &c. for locking the member in its operative position. The member e is hinged at f to a bracket b adjustable on serrations d and secured by bolts c, and normally occupies a vertical position until it is pressed downwards into the operating position shown in full lines. It is provided at one end with an upturned portion g shaped to the contour of the lever, and at the other end with an operating pedal or footplate i.
Patent GB-748572-A (GB)
Title: Process for the multi-stage evaporation of salt-depositing liquids
IPC: B01D1/26
Filed: 1953-10-05
Abstract: <PICT:0748572/III/1> In a process for the evaporation of solutions containing salts, e.g. ammonium sulphate solution or cellulose waste liquor, wherein the solution is heated and partially evaporated in an initial evaporator 1, then subjected to reduced pressure in a series of zones 6, 8, 10, 11, 12, in which the solution evaporates with simultaneous cooling and separation of salt which forms a suspension in the residual-liquor, and the latter, after removal of the salt, is circulated back to zone 10 through a series of heat-exchangers 14 to 25 which are supplied with part of the steam evolved in zones 10 and 11, at least part of the fresh feed, introduced through pipe 35, is supplied to the initial evaporator 1 through a series of preheaters 36 to 47 which are disposed in parallel to heatexchangers 14 to 25 and are heated by the remainder of the steam from zones 10 and 11. The external heaters 2 of evaporator 1 are operated with fresh steam or backpressure steam from pipe 4.  The process affords a saving of steam and obviates the formation of salt-incrustations on the surfaces of the apparatus.  Each of the evaporators 10, 11, 12 is divided into a number of stages by partitions 13.  The suspension of salt and residual-liquor is pumped from evaporator 12 through pipe 85 to separator 52, wherein the salt is deposited and withdrawn through pipe 53, while the residual-liquor flows through pipe 32 to heat-exchanger 14.  After leaving heat-exchanger 25 the liquor passes through heater 33, wherein it is heated by heat-exchange with steam supplied through pipe 34 from evaporator 1, and is then introduced through pipe 76 into evaporator 10.  The fresh feed after leaving preheater 47 is further heated in heaters 48 and 49, which are supplied with steam from evaporators 8 and 6 respectively, before it is introduced through pipe 3 into evaporator 1.  A part of the fresh liquid may be introduced from pipe 35 through pipe 50 into the liquor circulating through heat-exchangers 14 to 25 and evaporators 10, 11 and 12.  The three stages of evaporator 12 are connected to condensers 28, 29 and 30 which are connected in series with respect to the cooling water supplied through pipe 79.
Patent GB-170306-A (GB)
Title: Improvements in or relating to electromagnetic chucks
IPC: B23Q3/154
Filed: 1921-10-14
Abstract: 170,306. Zehnder, W. Oct. 16, 1920, [Convention date]. Electromagnetic workholders. - Short-circuiting of the coils of an electromagnetic chuck, by the entry of water through the junction of the pole-pieces with the non-magnetic spacing-material is prevented by holding together in a strongly compressed state the polepieces and spacing-material. The Figures show the invention as applied to an alternating- current chuck comprising an open-topped casing 1, in which are located the magnet cores 13 and exciting-coils 12. The work-holding plate comprises two longitudinal bars 2 secured to the casing by screws 3 and having their inner edges formed with V-shaped channels, in which are inserted non-magnetic bars 4 of channel-section. Cross-pieces 5 are inserted between the ends of the bars and are held to the casing by screws 6; the bars are screwed to the cross-pieces. The laminated. pole-pieces 8 and the non-magnetic spacing 7 are held between the bars, and, in assembling the plate, one cross-piece is secured to the casing and this piece and the pole-pieces and spacing-material are subjected to strong compression longitudinally of the bars 2; the other cross-piece is then inserted, compressed, and secured to the casing. A small space is left between the cores and the pole-pieces to allow for expansion. The laminations forming the cores and yokes are held together by insulated bolts 15, and the yoke is held in a frame 23 secured to the bottom of the casing. The laminations forming the pole-pieces 8 may be formed integral with the cores, being held together by long bolts and abutting against a common yoke. When the chuck is intended for use with direct current, the pole-pieces may be solid. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a construction in which the pole-pieces and spacing- material, instead of being mounted in a frame, are held and pressed together by long bolts. This subject-matter does not appear in the Specification as accepted.
Patent GB-799020-A (GB)
Title: Improvements in or relating to variable-speed power transmissions
IPC: F16H47/08
Filed: 1955-09-26
Abstract: 799,020. Change-speed gearing. BORGWARNER CORPORATION. Sept. 26, 1955, No. 27391/55. Class 80 (2). In a four-speed and reverse epicyclic gear for motor vehicles, the planet carrier 51 is adapted to be connected to the engine shaft 10, 12 by a plate clutch 18, planets 48 mesh with an annulus 49 secured to the output shaft 11, with a sun 43 and with planets 47 meshing with a sun 45, the suns 43, 45 are adapted to be connected through plate clutches 16, 17 to an hydraulic torque-converter 26, 27, 28 driven by the shaft 10, and the sun 45 and the carrier are adapted to be stopped by brakes 19, 20. With all five electrodes and brakes disengaged, the gear is in neutral. For first speed, clutch 16 and brake 19 are engaged, drive being through the torque-converter and sun 43, sun 45 being stopped. For second speed, clutch 17 and brake 20 are engaged, drive being through the torque-converter and sun 45, the carrier 51 being stopped. For third speed, clutch 18 and brake 19 are engaged, drive being direct to the carrier 51 with the sun 45 stopped. For fourth speed, which is direct, the three clutches 16, 17, 18 are engaged, the gear and the torqueconverter being locked. An alternative fourth speed split drive is obtainable by engaging only the clutches 17, 18, drive then being direct from shaft 10 to carrier 51 while sun 45 is driven through the torque-converter. For reverse, clutch 16 and brake 20 are engaged, drive being through the torque-converter and sun 43, the carrier 51 being stopped. The clutches and brakes are engaged by pressure fluid supplied by gear pumps 43, 82 driven by the shafts 10, 11.