baber/WOPTO huggingface dataset:
Patent GB-512569-A (GB)
Abstract: 512,569. Fluid - pressure servomotor - control systems; liquid, gaseous, and pulverulent fuel furnaces. BAILEY METERS & CONTROLS, Ltd. March 12, 1938, No. 7749. Convention date, March 12, 1937. [Class 135] [Also in Group XII] The simultaneous combustion in a furnace of a plurality of fuels such as pulverizer coal, tar, &c. in varying proportion is controlled by supplying one of the fuels, together with its requisite supply of air, in quantities calculated as the difference between the total required output and the observed output of the other combustibles. The total output of the furnace 1 may be measured by the vapour output of an associated vapour generator 2 and one of the fuels may be solely responsible for low outputs by supplying it exclusively up to the limit of its availability. The burner 3 has a blast-furnace gas conduit 5 and an air conduit 6 and burner 4 a pulverized-coal conduit 7 and blower 8 and an air conduit 9. Pneumatic relays 12, 14, 16, 18 control dampers 11, 13, 15 and valve 17 in the uptake 10 and conduits 6, 9, 5, respectively, while relay 20 controls rheostat 19 governing the blower. The steam in outflow conduit 21 is measured by a meter 25 with indicator 26 and the flow of gas and air in conduits 5, 6, 9 by meters 28, 39, 40 having indicators connected together and to indicator 26 by links 44, 46, 47, 50, 53, and levers 45, 51, 54, link 47 carrying an indicator 49. These indicators may either advise an operator or may control the pilot valves 52, 55 of the relays 14, 16 and the pilot valve 48 which controls a relay 58. Relay 58 governs relay 20 and is connected to relays 12, 18 and a pilot valve 57 positioned by a Bourdon tube 56 in conduit 21. Dash-pots such as 38 may be used so that the indicator readings are in terms of gas flow or equivalent steam flow, and the indicators may move relative to a common index or recording chart.
Patent GB-1223580-A (GB)
Title: Improvements in or relating to braking systems
IPC: B60T11/10
Filed: 1968-10-31
Abstract: 1,223,580. Manual and fluid-pressure brake operation; transmitting-mechanism. ALFRED TEVES G.m.b.H. 31 Oct., 1968 [15 Feb., 1968], No. 51603/68. Headings F2E and F2F. In a brake system for motor vehicles with disc or drum brakes or both, which are operable by an hydraulic service brake system, the brakes associated with either the front wheels or the rear wheels of the vehicle are also operable by a mechanical hand brake system, and a force-transmitting connection is provided between the hand brake system and the service brake system so that the hand brake system is capable of being brought into operation to augment the braking force supplied by the service brake system. Preferably, the force-transmitting connection comprises either a mechanical or an hydraulic linkage. The resilience of the hand brake system may be made optionally greater or smaller than the resilience of the service brake system. As shown, front disc brakes 1, 2 acting on brake discs 12, 13 are provided. Rear disc brakes 3, 4, acting on brake discs 14, 15, respectively, are also provided, and have also extra mechanical actuation in the form of a hand brake lever 7, a brake cable 8, a compensating roller 9, a brake cable 10, 10a and cable levers 11, 11a. The hydraulic system includes brake pedal 5 and master cylinder 6. The forcetransmitting connection is shown at 16 and has a forked end member 17 and an adjustable entraining member 18. In operation, when the driver depresses the brake pedal 5 and thus initiates the operation of the service brake, the mechanical hand brake system is normally included in the braking operation via the linkage 16-18. However, the force-transmitting connection may be attached to the service brake system with so much inoperative clearance, that when the service brake is actuated, even through the forcetransmitting connection is entrained, no braking force is transmitted to the mechanical brake until the inoperative clearance has been taken up. This applies especially if the hand brake system is applied to the front instead of the rear wheels. A brake booster governing both front and rear brakes may be provided in the hydraulic brake circuit (Fig. 2, not shown). Automatic slack-adjusters may be incorporated.
Patent GB-1165171-A (GB)
Title: Improvements in or relating to Multiple Operation Machine Tools
Inventor: LEWRY KENNETH MARTIN
IPC: B23B11/00
Filed: 1965-11-19
Abstract: 1,165,171. Machine tool details. KEARNEY & TRECKER Ltd. 18 Nov., 1966 [19 Nov., 1965; 7 Dec., 1965], Nos. 49329/65 and 51880/65. Headings B3B, B3C, B3N and B3T. In a multiple operation machine tool such as an automatic lathe having a first work-holder and a second work-holder, means are provided for carrying out machining operations on a workpiece in each of the work-holders in first and second locations respectively. Following a machining operation in the first work-holder in a first location the workpiece is transferred from the first work-holder to the second work-holder which subsequently moves from the first location to a second location in which the workpiece is held by the second work-holder whilst further machining operations are carried out by a tool holder incorporating a number of rotatable tools which may be selectively presented to the workpiece in the second location. The first workholder is formed by the chuck in the machine spindle, the second work-holder comprises a swinging arm member 100 pivotally carried on the machine frame and carrying a collet type work-holder 105 at its free end. The holder 105 is adapted to receive a workpiece from the lathe chuck and transfer the workpiece from the first location to the second location during which movement co-operating abutments 121 and 117 on the machine frame and arm respectively, effect clamping of the workpiece in the holder 105 by actuation of a rack 116 and lever 109 on the arm 100. The arm 100 is positionable in the second location wherein a tool holder in the form of an indexable turret 16 with a plurality of rotatable tools (not shown) in sockets 17 therein is adapted to selectively present the tools to the workpiece whilst held in the second work-holder. A further drilling tool holder 96 is secured to the machine frame for use in the second location and is vertically movable on a slideway 98. The drive to the drill tool holder 96 and to the rotatable tools in the turret 16 is effected from an independent motor 6 through gearing and shafts (see Fig. 4). The drive for indexing the turret and for the reciprocatable movement of the turret transversely of the indexing axis is provided from a drive shaft 28 driven from the main motor of the lathe through chain and sprocket means, the actual reciprocation of the turret being provided through a cam 33, lever 31 and rack and quadrant 29. The turret tool holders have incorporated in their drive clutch members which are spring loaded which operate to provide forward and reverse rotation when a screwing tool is used. The machine is set up to operate in an automatic sequence.
Patent GB-1235138-A (GB)
Title: Production of formaldehyde solutions
IPC: C07C47/058
Filed: 1968-11-01
Abstract: 1,235,138. Formaldehyde. BADISCHE ANILIN- & SODA-FABRIK A.G. 1 Nov., 1968 [4 Nov., 1967; 2 Dec., 1967; 19 July, 1968], No. 51928/68. Heading C2C. Formaldehyde solutions are prepared by reaction of methanol in the gas phase with O 2  or a gas containing free O 2  with or without steam at 600-800 C. in contact with a silver catalyst followed by multistage absorption of the formaldehyde from the resultant gas, the gas passing through at least three absorption stages at 60-90 C. under acid conditions, the first to penultimate stages containing an aqueous ureaformaldehyde precondensate solution having a molar ratio of formaldehyde to urea of from 1.8:1 to 2.8:1 and the final stage containing an aqueous urea solution, the residence time in said final stage being not more than one hour. Aqueous methanol recovered from the gas leaving the final absorption stage is preferably recycled for oxidation, and the mixture of recovered aqueous methanol and fresh methanol is treated with an alkaline agent to a pH of at least 9 before oxidation. The aqueous formaldehyde-urea precondensate solution may be obtained by mixing liquids from the final and first absorption stages and condensing under acid conditions.
Patent GB-1476773-A (GB)
Title: Method of and apparatus for detecting flaws in metallic rods
IPC: G01R33/12
Filed: 1974-12-03
Abstract: 1476773 Detecting flaws in rods KENNECOTT COPPER CORP 3 Dec 1974 [7 Jan 1974] 52165/74 Heading G1N Anomolies in the dimension or composition of a metallic rod may be detected by transporting the rod 14 in a first direction through a magnetic field having a time invariant magnetic field gradient in the first direction, variations in eddy current circulating within the rod being sensed at a given position within the field gradient by means, e.g. induction coils 19 in series opposition, giving an output indicative of the variations. The magnetic field gradient may be produced by a cylindrical permanent magnet 16, as shown, adjacent an internally tapered cylinder 17 of ferromagnetic material, by a tubular shaped magnet Figs. 3 and 4 (not shown), or by an electromagnet. The rod 14 may be advanced in a guide tube 12 through the field by rollers 13 at a constant velocity. The output from the coils may be connected to a differential amplifier 21 the output of which can be displayed on an oscilloscope or strip recorder (22) Fig. 2 (not shown). A digital counter (23) may be provided to count pulses above a given threshold value, the output being connected to a data storage unit, e.g. a digital computor.
Patent GB-1389597-A (GB)
Title: Manufacture of baked food products
IPC: A21D13/00
Filed: 1972-11-14
Abstract: 1389597 Baked goods A ZACCARIA 19 Oct 1973 [14 Nov 1972] 52482/72 Heading A2B Baked goods such as bread or biscuits are prepared from a dough comprising a predominance, preferably 50-70%, of flour, trace quantities, preferably 2¢-6% and “-2% respectively, of salt and pepper, a quantity, preferably 2-25%, of raw egg, and a trace, preferably 1¢-6%, of vegetable oil, the dough having been formed by mixing the salt, pepper, and flour, then adding the egg and oil, then gradually adding water until the mixture is of dough-like consistency, after which the dough is kneaded, separated into pieces of desired shapes, immersed in hot, preferably boiling, water and left until the pieces float to the surface, after which they are removed and baked to a crisp biscuit-like consistency, preferably in two stages, the first at approximately 400‹F, and then for a shorter period at approximately 300‹F. Other flavourings may be incorporated in the dough.
Patent GB-1169189-A (GB)
Title: Improvements in Hydraulic Steering Systems
IPC: B62D5/24
Filed: 1966-11-24
Abstract: 1,169,189. Power steering. ROBERT BOSCH G.m.b.H. 24 Nov., 1966 [26 Nov., 1965], No. 52608/66. Heading B7H. A motor vehicle hydraulic steering system comprises a feed pump 1, a double acting master piston 8 within a master cylinder 7, a steering spindle 10, in screw threaded engagement with the piston, a valve spool 53 located in a longitudinal bore of the piston, and a double acting steering motor 25. The spool 53 is biased by a spring 70 into a neutral position in which master cylinder chambers 29, 30 communicated with the ends 23, 24 respectively of motor slave cylinder 25 via spool passages 61, 62; 59, 60; spool bore grooves 57, 58; 48, 49 and fluid lines 21, 22. Spool bore grooves 44, 45 are connected with pressure fluid supply line 3 and grooves 40, 41 and 54 with fluid return line 17. The piston 8 has a longitudinal bore 81 which is closed by valve members, 86, 87 loaded by a common spring 83 and which has stems 92, 93 which project beyond the piston end surfaces 27, 28, the bore also being connected with line 3. The lines 3, 17, 21 and 22 connect with cylinder 4 via sockets 5, 16, 19 and 20 which open into longitudinal grooves 35, 36, 37 and 38 in the centre portion of the piston wall. Piston travel is limited by stops 75, 76 and it is guided and prevented from rotating by a peg and groove arrangement 34, 33. Slight rotation of the steering spindle will not utilize the power assistance because the small movement of the piston 8 will not cause an increase in pressure in either chamber 29 or 30 to overcome the spool spring 70. This increase in pressure will be transferred direct to either of slave cylinder ends 23, 24. With a large rotation, e.g. clockwise, of spindle 10 the piston 8 will move to the left and the pressure in chamber 29 will cause the spool to overcome the spring bias and move to the right. Chamber 30 will then be connected with pressure fluid line 3 to assist the movement of piston 8, and the ends 23, 24 of motor 26 will be connected to chamber 29 and return line 17 causing piston 26 to operate the steering wheels. Once the steering effect has been completed the pressures in chambers 29 and 30 equalize and the spool returns to its neutral position until the spindle 10 is rotated in the opposite direction. If the same steering operation is carried out with the pump 3 inoperative movement of the valve spool to the right will cause chamber 29 to be connected with motor end 23, chamber 30 will suck fluid from line 17, and motor end 24 will be connected to line 17. In the event of a leak in the system and piston 8 no longer central in cylinder 7 in the neutral position, e.g. displaced to the left, the stem 92 will contact the cylinder end wall during a full steering movement since the piston 8 will reach the cylinder end prematurely. Valve member 86 will then be moved from its seat and pressure fluid from line 3 will pass into chamber 29 and thence to end 23 of the steering motor so that it may complete its full movement.
Patent GB-1399907-A (GB)
Title: Tube making mills
IPC: B21C37/08
Filed: 1972-11-15
Abstract: 1399907 Skelping tubes M W WILSON 15 Nov 1972 52667/72 Heading B3E A tube making mill is adapted to receive readily interchangeable magazines each fitted with tube forming rolls and welding pinch rolls ready for production of tube of a required size. In the mill shown, forming rolls 1, 2 and welding pinch rolls 4 are mounted in a frame 3 provided with hoisting lugs 11, so that frames can readily be interchanged. Shafts 1a that require to be driven are connectible to drive shafts 7 of reduction gears 8 by sliding dog clutches 9. Traction rolls 6 may be adjusted, or mounted in replaceable magazines. When a magazine is removed, a portion of part-formed tube is preferably left in it to facilitate later re-starting with the same magazine.
Patent GB-1173162-A (GB)
Title: Injection-Luminescent Diodes
IPC: C09K11/08
Filed: 1966-11-24
Abstract: 1,173,162. Electroluminescence. MONSANTO CO. 24 Nov., 1966 [24 Nov., 1965], No. 52677/66. Heading C4S. [Also in Division H1] An injection luminescent body comprises a single crystal of GaAs, GaP, or GaAsP with an N-type region doped to between 10<SP>15</SP> and 10<SP>19</SP> atom/c.c. and a linear graded PN junction, i.e. a junction having a junction characteristic " n " between 2.8 and 3.2. The junction may be produced by maintaining a surface concentration of about 4 x 10<SP>15</SP> atom/c.c. of P-type impurity during diffusion. The junction characteristic is particular capacitance-voltage measurement. In one example an N-type gallium arsenide body doped with tin to 1À7 Î 10<SP>18</SP> atom/c.c. is subjected to vapour diffusion from zinc and gallium sources at 850‹ C. for 14.5 hrs. to produce a P-type region; the crystal was cleaved on a 110, 90 degree cleavage plane and etched to produce mesas for individual diodes. Gold-zinc and goldtin-antimony films were alloyed to the P and N- regions respectively to provide electrodes. The PN junction was 11À7Á below the P-type surface where the zinc concentration was 4 x 10<SP>19</SP> atom/c.c.. In a modification, zinc arsenide was used as the impurity source, diffusion at 1000‹ C. for 5 minutes producing a PN junction 40Á below the surface with a zinc concentration of 4 x 10<SP>19</SP> five microns from the junction at a P+P junction. Other embodiments utilize a gallium phosphide body doped with sulphur and a GaAsP body doped with selenium. Alternative N-type doping materials (0.67, 0.33) specified are tellurium, carbon, silicon and germanium, and alternative acceptors are cadmium and magnesium.
Patent GB-1282493-A (GB)
Title: A process for the preparation of dithioesters
Inventor: LEON NICHOLAS HAY
IPC: C07D307/68
Filed: 1969-10-28
Abstract: 1282493 Dithioesters UNILEVER Ltd 28 Oct 1969 52815/69 Heading C2C Dithioesters of the general formula are prepared by reacting a carboxyalkyl carbodithioate of the formula R. CS. SR<SP>2</SP> wherein R<SP>2</SP> is CH 2 COOH, (CH 2 ) 2 COOH, or CH(Me)CH 2 COOH and R is an organic radical, with a mercaptan of the formula R<SP>1</SP>SH wherein R<SP>1</SP> is an organic radical other than R<SP>2</SP>. The Specification refers to several novel dithioesters, which may be prepared by the above method, in which R is a phenyl group which may be substituted at the 2, 3 or 4 position with any one of an alkoxy, amido, halo, nitro, phenylazo or carbodithioate group, a homocyclic polynuclear aromatic group such as a naphthyl group, a heterocyclic group such as a furyl, 2-pyridyl, substituted 2-pyridyl group or the N-oxide group, or an alkyl group having from 1 to 24 carbon atoms, and in which R<SP>1</SP> is a phenyl group, benzyl group, alkyl or alkenyl group having from 1 to 6 carbon atoms or an alkylcarboxyalkyl group. The reaction is preferably carried out either in an organic solvent e.g. ether or benzene, and the thioglycollic acid by-product is removed by treatment of the reaction mixture with an aqueous alkaline solution e.g. NaOH, or in aqueous solution. The carboxyalkyl carbodithioates may be prepared either by reaction of a Grignard compound with carbon disulphide and subsequent esterification of the magnesium halide salt of the dithioacid with a chlorocarboxylic acid salt, or by thiohydrolysis of S-carboxyalkylthiopiperidinium bromide prepared by reacting a thiopiperide (prepared by the Willgerodt-Kindler method) and a bromocarboxylic acid.
Patent GB-1498957-A (GB)
Title: Joining pieces of sheet material
IPC: B29C65/62
Filed: 1974-12-09
Abstract: 1498957 Folding edges of non-metallic sheet material H-H KUPER 9 Dec 1974 [19 Dec 1973] 53111/74 Heading B5K [Also in Division D1] Edge regions of two sheets 10 are joined by stitching the regions together to form a seam 25 parallel to and spaced from each edge to be joined to leave two edge strips 10a; folding each strip 10a to lie flat against the respective sheet 10; applying a thread 16 of thermoplastic adhesive within each fold; and pressing each edge region to bend the adhesive thereto. The sheets 10, e.g. of textile fabric, leather, artificial leather, plastics, paper, cardboard or wood material, are fed continuously by conveyer members 13, 14, e.g. two rollers of which at least one, preferably the lower, is driven, an upper pressure shoe and a lower roller, or two endless belts or chains, to a device 15 for folding over the strips 10a and devices 17 for feeding the threads 16 into the folds. The device 15 comprises a guide 21 having curved folding surfaces 21a and secured to a rod 22 pivotable on a body 19 by a screw 23. Each device 17 is pivotable about a screw 24 on the body 19 and comprises a heatable guide tube, which may include an electrical heating element, for the thread 16 fed from the reel 16a. Each tube is inclined towards the guide 21 and towards the nip between the rollers 13, 14. Preferably, each thread 16 is a transparent glass or silk thread coated with a thermoplastic adhesive or the entire thread is made of a thermoplastic adhesive. Instead of by heating the tubes electrically, the threads may be heated by hot air. In use, the sheets 10 are fed continuously by the members 13, 14 and the guide 21 runs with its lower edge 21b between the raised strips 10a which are folded over by the surfaces 21a. During this folding, tube outlets 17a guide the threads 16 with the adhesive thereon heatactivated on to the sheets 10. The members 13, 14 press the strips 10a firmly against the sheets 10 with the threads 16 therebetween.
Patent GB-1213685-A (GB)
Title: Static inverter systems
IPC: H02M7/527
Filed: 1968-11-14
Abstract: 1,213,685. D.C. to A.C. converting systems. STANDARD TELEPHONES & CABLES Ltd. 14 Nov., 1968, No. 53991/68. Heading H2F. Thyristors in an invertor are controlled by logic circuitry to produce an output voltage waveform symmetrical about zero, each half wave of which consists of two pulses phase displaced by 60 degrees (at the fundamental frequency) as shown, Fig. 5, whereby third harmonics are eliminated since 60 degrees represents a half cycle of the third harmonic, the pulses having equal width # which can be varied between 0 and 57 degrees allowing for commutation time, by varying the leading or trailing edges. A single phase embodiment (Fig. 3) of the invertor comprises two half bridges 17, 18 each of which comprises a known arrangement (as shown, Fig. 4) of thyristors 1, 2 (or 3, 4), reactive current, feedback diodes 22, 23 commutating inductor 19 and commutating capacitors 20, 21. In operation gate pulses 1-4 (Fig. 5) are applied to respective thyristor switches 1-4 in a predetermined sequence to produce the desired double pulse waveform output from a transformer 7. Thus, Th1 and Th4 are made conductive simultaneously at time 2 to produce the first positive pulse. Th3 is turned on at time 3 to turn off Th4 and terminate the first pulse. Th4 is turned on again at time 4 thereby turning off Th3 and initiating the second positive pulse. Th2 is turned on at time 5 thus turning off Th1 and terminating the second positive pulse. At 180 degrees, time 6, to prepare for the next half cycle Th1 and Th3 are both fired and Th2, Th4 turn off. Th2 is then fired at time 7 turning off Th1 so that Th2, Th3 conduct simultaneously to produce the first negative pulse and so on. The logic control circuitry utilizes a ring counter, AND gates and flip-flops fed with pulses from an oscillator at six times fo, and is described with reference to Fig. 6 (not shown). The flip-flop outputs operate firing pulse control gates which control the application of firing signals from an hf source 40 to the thyristors gate electrodes, similar to Specification 1,097,891. Constant voltage output despite variations in the input voltage and load, may be provided (Fig. 7, not shown); the output voltage being compared with a reference voltage and the error voltage used to operate a phase shifter to vary the mark/space ratio of the oscillator output pulses and thereby the invertor output voltage. Alternatively the phase shifter may be operated by a manually controlled voltage. A three-phase embodiment is described with reference to Fig. 9 (not shown) wherein a threephase motor is supplied, while in Fig. 8 (not shown) embodiment the fifth and seventh harmonics are also substantially eliminated. Substantially sinusoidal output can be obtained by filtering.
Patent GB-1326576-A (GB)
Title: Load sensing devices for vehicles
IPC: B60T8/18
Filed: 1970-11-13
Abstract: 1326576 Load-responsive braking systems KNORR-BREMSE GmbH 13 Nov 1970 [15 Nov 1969] 54274/70 Heading F2F A load-responsive brake control arrangement for a vehicle such as a rail vehicle which has an unsprung part connected to a sprung part by a coupling member 4 includes a brake control valve to which a regulating force is applied by a T-shaped lever 6 pivoted at 5 and pivotally connected to the coupling member 4.