baber/WOPTO huggingface dataset:
Patent GB-1180669-A (GB)
Title: Systems for generating a constant current within limited voltage ranges
IPC: B23K9/073
Filed: 1967-05-16
Abstract: 1,180,669. Welding by fusion. ESSO RESEARCH & ENG. CO. 16 May, 1967 [8 June, 1966], No. 22737/67. Heading B3R. [Also in Division G3] A power supply system for pipe joint welding apparatus is automatically controlled so as to provide a substantially constant current output whilst allowing voltage variations within a range of Œ 15% of a desired mean value. As shown, a welding generator GA has its field winding GF supplied from A.C. input terminals 103 by way of a rectifier bridge 102 including thyristors SCR-1, SCR-2. Firing pulses for the thyristors are derived from respective pulse transformers T1, T11 and T2, T12 which are associated with a control circuit responsive to the arc current as detected by a series resistor RS. The control circuit comprises a reference source including a Zener diode Z1 and a potentiometer REF, a "lower limit" potentiometer and an "upper limit" potentiometer P2 associated with a second Zener diode Z2. The error voltage resulting from the comparison of the voltage drop across RS with the reference voltage is applied to the base of a transistor Q1 connected across the diagonal of a rectifier bridge 101 connected to the pulse transformers, so that the transistor conducts more current when the load current decreases, and vice versa, whereby the firing pulses produced by the pulse transformers are such that the firing angle of thyristors SCR-1, SCR-2 is varied in a sense to maintain the load current constant to within about Œ 1% of a desired mean value; however, the minimum and maximum currents that can flow through transistor Q1 are determined by the settings of the "lower limit" and "upper limit" potentiometers, so that the voltage across the arc is only allowed to vary within gated limits, e.g. within Œ 15% of a desired mean value, whilst the current is maintained substantially constant. Other embodiments capable of effecting the required type of regulation are described with reference to Figs. 3 to 14 (not shown). Thus the control circuit may include a carbon pile regulator (Fig. 3), a field rheostat driven by a reversible motor (Fig. 4), a series of stepping resistors (Fig. 8), a bleeder network connected across the generator field (Fig. 10), or a thyristor controller with a firing circuit including a magnetic amplifier (Fig. 14). The rectifier system of Fig. 2, if of sufficient capacity, may be used to supply welding current directly, instead of being used to control the field current of a welding generator. The welding is effected by consumable electrode (preferably wire) using shielding gas. The process may include use of a preheat, a weldbacking, and a flux, e.g. the electrode may be coated.
Patent GB-167389-A (GB)
Title: An improved skid support for aircraft
IPC: B64C25/50
Filed: 1920-08-03
Abstract: 167,389. Blackburn Aeroplane & Motor Co., Ltd., and Bumpus, F. A. Aug. 3, 1920. Skids; shock-absorbers, applications of.-A skid for the tail end of aircraft comprises an elongated structure A, horizontally pivoted to the fuselage at B and formed in two sections connected together by a vertical pivot 5 near which it is pivoted to a link D, the other end of which is carried by a slidable resilient cushioning member E mounted upon the framework C of the fuselage. The structure A may comprise a triangulated framework of pairs of tubes 1, 2 supporting by lugs 3, 4, and a pivot pin 5 a /D frame 6, which may be filled with wood or other material and reinforced by side members 8 and a wearing-shoe 9. To steer the machine when on the ground, the arms of a yoke 10, which may be screwed to the sleeve 7, are connected by wire cords or the like to control means within reach of the aviator.
Patent GB-388319-A (GB)
Title: Improvements in the manufacture of bread for diabetics
IPC: A21D2/36
Filed: 1932-08-15
Abstract: A process for making bread for diabetics comprises grinding non-disembittered soya beans, which have been de-oiled to the extent of about one half of the oil content, working up the ground product to dough without adding cereal flour, and baking the dough in the usual manner but using about 10-12 per cent more fermenting agent, e.g. yeast, than is otherwise usual for making ordinary cereal bread. The partial de-oiling may be effected by roughly grinding the peeled beans, heating the ground mass to about 70 DEG  C. and subjecting it to hydraulic pressure; the compressed cakes are ground and worked into dough.ALSO:A process for making bread for diabetics comprises grinding non-disembittered soya beans, which have been de-oiled to the extent of about one half of the oil content, working up the ground product to dough without adding cereal flour, and baking the dough in the usual manner but using about 10-12 per cent more fermenting agent, e.g. yeast, than is otherwise usual for making ordinary cereal bread.  The partial de-oiling may be effected by roughly grinding the peeled beans, heating the ground mass to about 70 DEG  C., and subjecting it to hydraulic pressure; the compressed cakes are ground and worked into dough.
Patent GB-445747-A (GB)
Title: Improved means for operating internal combustion engines with liquefied gases
IPC: F02M21/00
Filed: 1935-08-16
Abstract: 445,747. Actuating materials ; vaporizers. I. G. FARBENINDUSTRE AKT.- GES., Frankfort-on-Main, Germany. Aug. 16, 1935. No. 23066. Convention date, Aug. 18, 1934. [Classes 7 (ii) and 7 (iii)] Liquefied gaseous fuel, which is stored in a reservoir and heated before passing through a pressure release valve, is further heated by the cylinder cooling water before being mixed with air for admission to the combustion chambers. At starting, the cold cooling water normally supplies sufficient heat to vaporize any liquid particles of the fuel, but further heating by an electric device may be provided if necessary. The liquefied gas passes from the reservoir through a helical pipe g, in a chamber a in the cooling water circuit, and a separator i to a pressure release valve b, whence it passes through a chamber c surrounded by the cooling water to mixing chambers d leading to the induction pipes. The Specification as open to inspection under Sect. 91 comprises also the interposition of a second release valve between the chambers c, d. This subject-matter does not appear in the Specification as accepted.
Patent GB-732245-A (GB)
Title: Electrical control system
IPC: G05D23/22
Filed: 1952-09-15
Abstract: 732,245. Automatic temperature control systems. BLECKMANN, H., BLECKMANN, A., and DAMHOFER, E., [trading as BLECKMANN & CO. [Firm of]]. Sept. 15, 1952 [Oct. 9, 1951], No. 23132/52. Class 38 (4). [Also in Group XXXVII] An electric control system comprising an electromagnetic switching element partly controlled by a. variable to be controlled, e.g. an electric furnace 10, is characterized by an armature 5 which is movable towards an electromagnet 3 against the action of a spring 6 which is subjected to the action of means periodically moving the armature 5 towards the electromagnet 3 through the energizing coil 2 of which flows a current dependent on the variable to be controlled, in the case of an electric furnace 10 this current is derived from a thermocouple 1 associated therewith, a pair of contacts 7, 8 being provided which are moved with the armature and maintain closed the circuit controlling the variable to be controlled, which contacts can only be opened when the armature 5 adheres to the electromagnet 3 due to the magnetic force thereof exceeding the opposing force of the spring 6. The means periodically moving the armature 5 and the contacts 7, 8 comprises an electric motor 9 driving a worm and cam arrangement 4. When the temperature of the thermocouple 1 reaches the desired value-adjustable by movement of a core 11 of the electromagnet 3 or by altering the stress of the spring 6- the output thereof energizes the electromagnet such that it overcomes the force of the spring 6 and retains the armature 5 attracted thereto. Contacts 7, 8 are thus opened removing the supply from the furnace and the motor. In other embodiments the means periodically moving the armature are in the form of a direct-acting bi-metallic strip or a further electromagnet controlled by the bi-metallic strip. Other embodiments are envisaged in which the controlling elements are pressure gauges, thermometers, hydrometers and the like.
Patent GB-1304884-A (GB)
IPC: F28F1/12
Filed: 1970-05-13
Abstract: 1304884 Annular radiators M BEHR [trading as SUDDEUTSCHE KUHLERFABRIK JULIUS FR BEHR] 13 May 1970 [21 May 1969] 23194/70 Addition to 1242894 Heading F4S In an annular radiator, particularly for the cooling circuit of an I.C. engine, and substantially as described in Specification 1,242, 894 the cooling fins when viewed in the peripheral direction of the radiator are subdivided into individual sections.
Patent GB-336033-A (GB)
Title: Improvements relating to electric clocks
IPC: G04C3/027
Filed: 1929-07-29
Abstract: 336,033. Bulle, M. P. Favre-. July 29, 1929. Electric clocks; pendulums. - In an electric clock with a pendulum, isochronism is obtained by the use of an oscillating fork 34 pivoted at 35 vertically below the pendulum pivot 2, Fig. 14, and coacting with a pin 36 on the pendulum 3. The relative distances from 2 to 35 and the point of contact of pin 36 and the length of fork are such that the linear speed of pin 36 is greater than that of the fork 34. These conditions give isochronism, i.e. the vibrations of the pendulum are of the same duration, irrespective of change of arc. The pendulum, through its shaft 2 and a rigid arm 18, Fig. 1, drives a pawl 19 operating the ratchet 17 for the hands. 21 is a pawl preventing retrograde movement. When the hands are set, ratchet 17 would move rapidly and produce noise. To prevent this a spring brake 33 is fixed to pawl 21 which bears against wheel 17 and holds it stationary during setting. During normal operation with 21 at rest, however, 33 is clear of teeth 17. Fig. 19 shows a modification in which pawl 19, 19<1> cannot drive the ratchet 17 more than one tooth at each operation. Relieving friction on pendulum hinge. To free the pendulum shaft 2, Fig. 12, from drag due to friction, a magnet 25 is used to raise the pivot 2. In a modification, Fig. 13, the pendulum is a magnet 26, the lower end coacting with a fixed energizing coil and the upper end 27 being a pole coacting with a small mass of iron 28. Locking pendulum. Two bell cranks 39, 42<1> and 39, 42, Figs. 1 and 14, are pivoted at 40, 40<1> to the plate 1 and are interconnected at 43, 44 by pins and slot and are connected by a spring 41. By operation of 39, 42 two pins on the arms 39 are brought against the pendulum 3 to lock it. In the form shown in Fig. 1 the coil 4 on the pendulum coacts with a fixed magnet 5. In a modification, Fig. 18, the coil 4 is carried on a pendulum crutch 3, 45. If desired the pendulum may carry a magnet coacting with a fixed coil. Electric contact mechanism. Two flat pieces 6 and 7 of conducting metal are pivoted at 8 and 9, Figs. 4-6, the piece 6 being actuated by the pendulum. One end of 6 has a layer 10 of insulation. These contacts are in the circuit of coil 4. In one direction of swing, Fig. 5, piece 6 will drive piece 7, making contact and sliding over piece 7. In the other direction of pendulum swing, Fig. 6, the circuit is opened. In Fig. 7 a practical form is shown, 11 being a conducting pin and 12 an insulated pin. The anchor piece 7 is also integral with a lower anchor having pins which drive the ratchet 17. In Fig. 1 the shafts of the two anchors are side by side, the anchor 6 being a split block with silver contacts 11, 12 held by screws 29 and the anchor 7 of rectangular shape with symmetrical notches so that it may be turned through 180‹ after wear has taken place.
Patent GB-168511-A (GB)
Title: Improvements in cam shaft mountings for internal combustion engines
IPC: F01L1/053
Filed: 1920-08-10
Abstract: 168,511. Bentley Motors, Ltd., Bentley, W. O., and Burgess, F. T. Aug. 10, 1920. Valve-gear.-Axial adjustment of the cam shaft A and bevel-gear B is obtained by providing the shaft with an extension C carrying oppositely screwed nuts E, F arranged at opposite sides of an abutment D<3>, between which and the nuts are arranged thrust bearings G, H. The abutment D<3> is preferably formed by the end of the divided casing D, D<2>.
Patent GB-1398983-A (GB)
Title: Excavating machines
IPC: E02F3/90
Filed: 1972-05-18
Abstract: 1398983 Excavators BRITISH GAS CORP 17 Aug 1973 [18 May 1972 27 Oct 1972] 23481/72 and 49696/72 Heading E1F An excavator comprises means 14 for applying suction to a tube 7 having an inlet adjacent a rotary cutting tool 5, which is rotatable about the axis of the. inlet, which is vertical, the tool and part at least of the suction tube being carried' by a mounting adapted for horizontal and vertical movement. The cutter head 1 may be pivoted horizontally about mounting 12 and may be moved in a vertical plane by hydraulic, actuators 27 and 28. Spoil is conducted by the tube 7 to a settling chamber 8. Alternatively, Fig. 5, (not shown), settling chamber (52) may be carried by a horizontally slidable frame (53) and be connected by a rigid vertical tube (51) to the cutter head 1 which is movable vertically with respect to the tube (51). The suction tube can be kept free of blockage by a rotating helical spring (76), driven from one end, or by two springs (77), (78) connected to a driven pulley (81), Figs. 8, 9 (not shown), or by a pneumatically operated hammer (43) mounted outside the tube, Fig. 4 (not shown). The excavator may be provided with a metal detector for giving an alarm and/or stopping the cutter when it approaches a buried pipe or cable.
Patent GB-370306-A (GB)
Title: Improvements in conveyor chains
IPC: B65G17/38
Filed: 1931-08-20
Abstract: 370,306. Endless chain conveyers. SIMONSSON, W., Halsingborg, Sweden. Aug. 20, 1931, No. 23493. Convention date, Oct. 16, 1930. [Class 78 (i).] In conveyer chains of the type which have alternate pivot pins at right-angles, the alternate links 1, Fig. 1, consist of an integral member having a boss 1a, two side prongs 1b, a crossbar 1c joining the ends of the prongs and at right-angles to the axis of the boss 1a, and external bosses 1d in line with the bar 1c. The connecting links 2, Fig. 4, are U-shaped, the bend engaging the cross-bar of one link member 1, and the free ends being connected to the boss 1a of the adjacent link by a tubular pin 3 which may be riveted at its ends or threaded as shown. The link member 1 may have a reinforcing web 1f, and the cross-bar 1c may have circumferential grooves 1g. The bosses 1d may be semicircular in shape and coact with the driving and guiding means. The carrier plates, in the construction described, are circular discs 4, Fig. 9, with crescent-shaped recesses 5 into which the periphery of the adjacent disc fits to allow relative turning movements. The discs are carried on pins 6 secured in the tubular pivot pins, and have projections on their undersides adapted to engage with the upper part of the link 2 to prevent movement relative thereto.
Patent GB-660965-A (GB)
Title: Improvements in and relating to electric transformer cores
IPC: H01F27/245
Filed: 1949-09-12
Abstract: 660,965. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 12, 1949 [Sept. 24, 1948], No. 23522/49. Class 38 (ii). A laminated core for electric transformers having at least one closed magnetic circuit of substantially rectangular configuration including two straight legs interconnected by yoke portions so that a core opening is encircled by the legs and yokes wherein each yoke portion has two branch members, one at one side and the other at the other side of the median plane of the core defined by the axes of the legs and wherein each branch member includes a plurality of laminations whose median lines are curved and lie in planes at right angles to the median plane of the core so that the ends of these laminations join the laminations of the legs whose planes are at right angles to the median plane of the core. Leg portions 2, 3 are built up of straight laminations into a cruciform pattern as shown at 4, the inner layers 6, 9 ... 14 being interconnected by means of yoke caps 7, 11 ... 13 so as to form closed loops while the outer layers 15, 18 ... 20 are connected by means of U-shaped parts 16, 21 ... 23 lying in a plane at right angles to the plane through the leg portions. The joints between the leg portions and the yoke caps and between the leg portions and the U-shaped parts may be of any well-known type. A core construction according to the invention occupies less space than the conventional type of core since the " yoke height " is only half that which obtains in the latter type of core; also there is a saving of material in the leg portions due to the fact that the packets of laminations in the leg portions are progressively shorter towards the outside of the leg. Another embodiment is described in which the internal layer of the leg portions and the interconnecting yoke caps are replaced by the conventional flat stacked lamination construction and in yet another modification the yoke caps are replaced by a further series of U-shaped members. The construction may equally well be applied to cores having a single winding leg and a socalled divided yoke.
Patent GB-643831-A (GB)
Title: Improvements in or relating to electronic current stabilising devices
IPC: H05B39/08
Filed: 1948-09-07
Abstract: 643,831. Rectifying; automatic current control systems. PARSONS & CO., Ltd., C. A., PARKER, A. C., and ROCHESTER, J. C. O. Sept. 7, 1948, No. 23639. [Classes 38 (ii) and 38 (iv)] A current stabilizer for a radiation source S in spectroscopy, comprises full-wave rectifier valves V<SP>1</SP> V<SP>2</SP>, the negative grid bias of which is determined by the output in valve V<SP>3</SP> which is variably biassed in accordance with the current flow through the device S. Any variation of the current is therefore neutralized by the compensating action of the rectifier valves. Normally, suitable negative bias voltage for valve V3 is provided by making the drop across ,resistance R<SP>1</SP> slightly less than the voltage across a voltage stabilizer valve V' in the cathode circuit of valve V<SP>3</SP>. The valve V<SP>4</SP> carries a steady current through resistances R<SP>6</SP> in addition to the anode current of the control valve V<SP>3</SP>. The resistance R<SP>1</SP> may take the form of one or more barretter lamps and the grid voltage of valve V<SP>3</SP> may be derived from an adjustable potentiometer connected across resistance R<SP>1</SP>.
Patent GB-1390246-A (GB)
Title: Pneumatic logic component insertable into another similar  component
IPC: F15C5/00
Filed: 1972-05-19
Abstract: 1390246 Fluidic elements CROUZET 19 May 1972 [7 June 1971] 23556/72 Heading G4P [Also in Division F2] A pneumatic logic element has a casing including in one face two inlet bores la of the same cross-section and on an opposite face a projecting outlet tube 1d. The cross-section of the tube is the same as that of the bores so that the outlet tube of one element can be fitted in to an inlet bore of another such element. An AND element is shown in Fig. 2. Valves 6, 6<SP>1</SP> sliding on lands 1f are connected by rod 7 so that the valves can alternately abut the ribs 1c surrounding the entrances to the outlet tube. An OR gate, Fig. 3 (not shown), and an element which can operate as an AND or an OR gate, dependent on its dimensions, Fig. 4 (not shown), are described.
Patent GB-1312487-A (GB)
Title: Complex lead -iv- acids and salts thereof
IPC: C01G21/20
Filed: 1970-05-15
Abstract: 1312487 Complex lead (IV) acids and salts WASAG-CHEMIE AG 15 May 1970 [16 May 1969] 23661/70 Heading C1A [Also in Divisions C2 and C7] Complex lead (IV) acids, or salts thereof, having ligands which are the same or different and which are stabilized by inner complex formation are produced by reacting a lead (IV) compound with an acid containing the ligands as acid radicals, or by anodic oxidation of metallic lead with cooling at 40-60‹ C. in the same acid, then insolubilizing the soluble acid initially formed by allowing the solution to stand or by heating the solution or precipitating the salt of the acid by addition of an alkali or a salt having the same anion as the initial acid. The acids which may be used include 40-100% phosphoric acid, cone. sulphuric acid, and arsenic acid. Where the ligands are different they may be selected from phosphate, alkyl or aryl phosphate, sulphate and acetate. The lead (IV) compound may be lead (IV) acetate or another lead (IV) carboxylate, active PbO 2  or Pb 3 O 4 . When Pb 3 O 4  is used with phosphoric acid a mixture of the desired lead (IV) complex and lead (II) phosphate is formed, the ratio Pb (II) : Pb (IV) being the same as that in the Pb 3 O 4 . Complex lead (IV) acids and salts specified include: hexakis-dihydrogenphosphate lead (IV) acid, H 2 [Pb(H 2 PO 4 ) 6 ]; bis-dihydrogenphosphato - bis - monohydrogenphosphato lead (IV) acid, H 2 [Pb(H 2 PO 4 ) 2 (HPO 4 ) 2 ] and the corresponding salts M 2 ]Pb(H 2 PO 4 ) 2 (HPO 4 ) 2 ] where M is a monovalent cation, particularly K<SP>+</SP> and NH 4 <SP>+</SP> ; hydronium hydrogensulphato sulphato plumbate (IV), [H 3 O][PbSO 4 (HSO 4 ) 3 ]; the caesium salt of trisulphato lead (IV) acid, Cs 2 [Pb(SO 4 ) 3 ]; bis - dihydrogenarsenato - bismonohydrogenarsenato lead (IV) acid,
Patent GB-603727-A (GB)
Title: Improvements in or relating to navigational indicating instruments
IPC: G01C17/36
Filed: 1945-09-13
Abstract: 603,727. Radio direction-finding. BENDIX AVIATION CORPORATION. Sept. 13, 1945, No. 23669. Convention date, Oct. 31, 1944. [Class 40 (vii)] [Also in Group XX] A composite magnetic and radio compass indicator comprises a compass card 13 controlled by an earth inductor compass, as described in Specification 537,514, [Group XXXV], and which is read against a lubber line 14, a second card 15, which is concentric with the first card and which normally moves with it through a frictional coupling, but which may be rotated independently by means of the knob 56, and a radio compass needle 63, which indicates the direction from which a radio transmission is being received. Card 15, which is calibrated from 0 to 180 degrees in both the clockwise and anti-clockwise directions bears a fixed index 35 which provides a clear indication of the zero direction. The compass dial 13 is coupled through the gearing shown in Fig. 2 to a hollow shaft 19 of device 20 and also to a shaft 22 driven by a twophase motor 24. The card 13 is controlled by an earth inductor compass comprising an element 25 which supplies three-phase signals which operate through a servo system to drive the motor 24 and thus the card 13 to bring it into a predetermined directional relationship with a magnetic field developed within the device 20. The card 15 is arranged so that it is frictionally coupled to the card 13 through the gearing. To rotate card 15 alone, knob 56 is pushed in, thereby causing gear-wheel 48 to engage with the gearing coupled to card 15 and also causing clamp 61 to force card 13 against shoe 52, whereby the card 13 is held firm. Then on rotation of the knob 56 the card 15 may be set in any desired relationship. with card 13. The loop aerial 74 of the radiodirection finder 75 is driven by a servo system to a position of null reception and the direction indicated is transmitted by a selsyn system, comprising transmitter 72 and receiver 67, the latter driving the shaft 66 passing through the hollow shaft 19 to rotate the radio compass needle 63. Specification 603,728, [Group XIX], also is referred to.
Patent GB-688215-A (GB)
Title: Process for the utilisation of tar and tar mixtures, coating solutions made thereby, and objects coated or treated thereby or therewith
IPC: C09D195/00
Filed: 1949-09-15
Abstract: A coating composition comprises tar or tar mixtures and toluene (or xylene) and acetone with or without butyl alcohol.  Further additions may comprise sec-amyl alcohol, dipentene, tung oil, shellac, methylated spirits, and stain dyes.