baber/WOPTO huggingface dataset:
Patent GB-214946-A (GB)
Title: Improvements in electric protective devices
IPC: H01T4/12
Filed: 1923-11-29
Abstract: 214,946. Schweiz Gl³hlampenfabrik Akt.-Ges. April 24, 1923, [Convention date]. Addition to 209,050. Protective arrangements.- In an electric protective arrangement, having electrodes of the kind described in the parent Specification, the electrically connected electrodes d<1>, d<2> are mounted in a glass foot e<1> and the electrically connected electrodes g<1>, g<2>, g<3> are mounted in a glass foot e<2>. The small variations in the quality of the electrodes, and the slight variations in the gaps between them are sufficient to cause the resistance of the various gaps to vary to a small extent and thus four gaps are provided which come into operation successively when a previous gap becomes faulty.
Patent GB-505025-A (GB)
Title: Improved insulated rail joint
IPC: E01B11/54
Filed: 1937-11-03
Abstract: 505,025. Rail joints. CONDY, J. H., BROGDEN, A. N., and LONDON PASSENGER TRANSPORT BOARD. Nov. 3, 1937, No. 30049. [Class 104 (ii)] In a lapped rail joint, an insulating insert 10 is placed between the laps 8, 9, and the end 8 of the rail which lies at the outside of the joint is offset outwards as indicated at 11 to accommodate the insert. The tapered space 25 formed on the inner running edge of the offset rail is built up by welding &c. to make it flush with the running edge of the other rail 9. The fishplates 12, 13 and fishbolts 14, are separated from the rail by insulators 16, 17, 19, 22, and the extra space between the rail and fishplate 13, due to the offsetting of 8, is filled with a packing plate 18. Specification 448,201 is referred to in the Provisional Specification.
Patent GB-1135654-A (GB)
Title: Improvements in or relating to electrical rotary machines
IPC: H01R43/08
Filed: 1966-07-05
Abstract: 1,135,654. Commutators for dynamo-electric machines. L. SVATEK, J. VITEK, and J. LUCEK. 5 July, 1966, No. 30104/66. Heading H2A. The segments of a commutator are electrodeposited on an insulating carrier which is formed with dovetail profiles to secure the segments. The carrier is first coated with silver or graphite, coated with copper, rinsed, and machined, and slotted to separate the segments. The securing dovetails may be at the ends 5, as shown, or they may run longitudinally (Fig. 3, not shown).
Patent GB-1203054-A (GB)
Title: Improvements relating to electrolytic conductivity measuring elements
Inventor: MILLS ARTHUR FREDERICK
IPC: H01C7/04
Filed: 1967-06-30
Abstract: 1,203,054. Electro-chemical analysis. DIVERSEY DEVELOPMENT Ltd. May 31, 1968 [June 30, 1967], No.30288/67. Heading G1N. A conductively measuring probe comprises an insulated core with ring electrodes protruding beyond the outer surface of the core and connecting wires extending through the core. A thermistor may be moulded in the core. A plurality of rings may be used with some connected in parallel, or one ring only may be used with the other electrode constituted by the pipe or tank in which the probe is mounted.
Patent GB-427781-A (GB)
Title: Manufacture of artificial stone from chamotte or grog
IPC: C04B33/02
Filed: 1934-10-23
Abstract: A process for making chamotte or grog compositions containing coarse grained material, e.g. over 3 mm., and fine grained material, e.g. under 1 mm., but no intermediate material, consists in first treating the coarse material with a thin clay slip to coat the grains with a skin of clay and then adding the fine material.  The whole of the clay may be added to the coarse material, or a small part only may be added, the rest being mixed with the fine material to make a paste. In a modification, finely ground clay that has been calcined at about 1000 DEG  C. is substituted for the fine grounded grog.  In an example, from a grog having a size of grain below 7 mm., the grains above 3 mm. are separated by sifting, and the grains below 3 mm. are ground until they are below ,4 mm., 50 kgs. of coarse grog are then mixed with 7,5 kgs. of clay and 6 kgs. of water; then 42,5 kgs. of fine grog are added, and the mixture is pressed, dried, and burnt.
Patent GB-899173-A (GB)
Title: Improvements in or relating to variable ratio steering mechanisms
IPC: B62D3/02
Filed: 1958-09-23
Abstract: 899,173. Cam steering mechanisms. BISHOP, A. E. Sept. 23, 1958, No. 30404/58. Class 80 (3). [Also in Group XXXI] In cam steering mechanism, particularly for power-assisted steering, the cam groove 13a in, the steering wheel shaft 11 with which the follower roller 14a of an arm 14 on the crossshaft 12 engages is of low lead at its central portion and increases to either side whereby a high ratio of steering wheel movement is obtained in the straight ahead position and a lower ratio when turning, the rate of decrease of said ratio increasing from the straight ahead position to a maximum and then decreasing again to the extreme positions. Hydraulic power assistance is provided by a piston 22 coupled to the arm 14 at 20 and controlled by a valve spool 35 on the shaft 11 which is actuated by slight initial axial movement of the shaft on a steering movement thereof.
Patent GB-448386-A (GB)
Title: Improvements in and relating to evaporators for refrigerating apparatus
IPC: F25B39/02
Filed: 1935-11-04
Abstract: 448,386. Refrigerating. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 4, 1935, No. 30465. Convention date, Nov. 3, 1934. [Class 29] Evaporators.-In a flooded evaporator including complementary sheet metal portions 15 and 16 having indentations which form headers 21 and 22, the portions 15 and 16 are united together along both longitudinal edges of the indentations with the exception of portions adjacent each end of the indentations which provide passages for allowing circulation of refrigerant through the headers. The header 21 is connected to a system formed of two manifolds 23 and 24 connected by passages 25, all formed by indentations in the sheet metal parts. The other header is connected to a similar system and the two systems are connected by a pipe 31. The refrigerant supply pipe 13 is led into the header 21 and down one of the passages 25 and branches at the bottom to supply the two bottom manifolds 23 and 28 through nozzles 33 and 34. A shelf formed of complementary portions 36 and 37 and having a refrigerant passage 38 is secured in the evaporator and supplied with refrigerant by connections 41 and 42.
Patent GB-386934-A (GB)
Title: Improvements connected with water-flow calorimeters
IPC: G01N25/42
Filed: 1932-11-23
Abstract: 386,934. Flow-meters. NORTON, A. L., Metchley, Prospect Hill, Redditch, Worcestershire. Nov. 23, 1931, No. 30493/32. Divided on 385,084, [Group XX]. [Class 69 (i).] A flow-meter for use with water-flow calorimeters comprises an inlet tube adapted to receive the liquid from a calorimeter, a level indicating tube in communication therewith and a discharge opening of small area so that a head of water is induced in the level indicator to indicate the approximate rate of flow through the calorimeter. In the form shown, the inlet tube 1 is connected to the level indicator 3 by a horizontal tube 2 and the discharge opening 4 is at the bottom of the indicator 3 but may alternatively be placed in the lower part of the tube 1 or in the passage 2.
Patent GB-992583-A (GB)
Title: Boring bars
Inventor: COLEY SAMUEL ERNEST
IPC: B23B29/034
Filed: 1961-08-24
Abstract: 992,583. Bearings. COLEY BROS. (TOOL) Ltd. Aug. 24, 1962 [Aug. 24, 1961], No. 30503/61. Addition to 901,767. Heading F2A. [Also in Division B3] A boring bar comprises a shank 10, a body 11 connected to the shank by a tapered bore 13 and a sleeve 14 having radial holes 15, each containing a ball 16, held axially on the body 11 by a ball thrust bearing 18. Such a bearing may be provided at each end of the sleeve.
Patent GB-366006-A (GB)
Title: Apparatus for continuous distillation of heavy hydrocarbons
IPC: C10G7/00
Filed: 1930-10-13
Abstract: <PICT:0366006/III/1> <PICT:0366006/III/2> <PICT:0366006/III/3> In the distillation of oils by injecting them into baths A, A<1> of molten metal through jacketed insulated pipes L, L<1> so that the oil remains unvaporized until it comes into contact with the molten metal, the pipes L project only a short distance below the surface of the metal, so that the oils are in contact with the metal for a very short time, cracking being thus avoided.  The injection pipes L, Fig. 2, are provided with a valve M on a rod l operated by a handle K. The stills A, A<1> are heated by burners C fed with producer gas, mazout or residual asphalt, and the waste gases pass through flues H to an outlet B and may be used for preheating the oil, or for steam raising. Residual asphalt is continually removed through pipes F, F<1> to reservoirs D, D<1>.  The vapours produced are led off through a tube P and fractionated in air-cooled condensers.  The stills may comprise several pots b, Fig. 3, and are supported on reinforced side belts g and reinforced by cross ribs t. Specification 230,339, [Class 32, Distilling &c.], is referred to.
Patent GB-950324-A (GB)
Title: Aircraft
Inventor: DOWTY GEORGE HERBERT
IPC: B64C25/12
Filed: 1960-09-05
Abstract: 950,324. Retractable aircraft undercarriages. DOWTY ROTOL Ltd. Aug. 29, 1961 [Sept. 5, 1960; Sept. 7, 1960], Nos. 30594/60 and 30837/60. Headings B7G and B7W. A V.T.O.L. aircraft has a retractable alighting gear comprising a leg 15 which is retained in the " down " position by hydraulic lock 20 and abutment 21 and is retracted by a jack 23 to be locked in the " up " position by hydraulic lock 22; two levers 25 connected by a stirrup 26 engage projections 17 on leg 15, so that in the retracted position the leg acts as part of the framework of the fuselage or wing 12. The locks and jacks are operated in conjunction with other aircraft controls to ensure that the retraction of legs 15 takes place before the aircraft changes from vertical to horizontal flight or before a predetermined forward speed is attained.
Patent GB-273164-A (GB)
Title: Improvements in means for attaching chains to handles
IPC: E03D5/02
Filed: 1926-12-03
Abstract: 273,164. Thomas, J. Dec. 3, 1926. End handles. - Metal chains are attached to handles of wood, porcelain, earthenware &c. by means of a piece of string attached to the end of the chain and held in the internal bore of the handle by one or more knots. The outer part 5 of the bore of the handle 1 is of larger diameter than the part 7 and the intermediate conical part 6 which retains the knots 4 in the string 3 attached to the chain 2 is preferably near the end 7 so that only one or two links enter the handle.
Patent GB-337170-A (GB)
IPC: A62B21/00
Filed: 1929-10-09
Abstract: 337,170. Deutsche Gasgl³hlicht-Auer Ges., and Hanseatische Apparatebau Ges. vorm. L. von Bremen & Co. Nov. 7, 1928, [Convention date]. Respirators. - The evolution of oxygen from closed - circuit respiratory cartridges containing sodium peroxide or the like, is effected at the commencement of breathing by the introduction into the apparatus of a gasiform acid, such as carbon-dioxide, or hydrochloric acid, which may be generated from an effervescent powder or the like or may be supplied in steel aluminium flasks. As shown a flask e, of compressed carbon dioxide, is inserted into a metal casing d in the breathing-bag b of a respirator, and is pressed by a plunger f, on the cap of the casing, against a pin g to perforate the seal and liberate the gas which passes to the apparatus through an aperature h.
Patent GB-1508364-A (GB)
Title: Axial-flow turbines
IPC: F01D25/08
Filed: 1975-07-22
Abstract: 1508364 Axial flow turbines KRAFTWERK UNION A G 22 July 1975 [22 July 1974] 30694/75 Heading F1T A multi-stage axial-flow steam turbine has the blades 11 of the first stage disposed on a larger diameter portion 12 of the rotor than the blades 13 of the adjacent stage. Steam is directed to the blades 11 via the unbladed annular outlet 20 of a casing 15 having tangential inlets 3, (4 to 6), Fig. 2 (not shown) with respective control valves. Coolant steam is supplied to the space 17 between casings 15, 16 via line 18 and valve 22, the coolant eventually entering the working steam path via gap 24.
Patent GB-1122938-A (GB)
Title: Copper-containing pigment dyes
IPC: C09B55/00
Filed: 1967-07-04
Abstract: the invention comprises compounds of the formula <FORM:1122938/C4-C5/1> where r and R1 are H, Cl or Br and R2 is H, Cl, CH3, C2H5 or OCH3.  The compounds are prepared by metallizing a Schiffs base of the formula <FORM:1122938/C4-C5/2> with an agent yielding copper.  The Schiff's base may be prepared in situ from the appropriate ortho-hydroxyaldehyde and ortho-amino-phenol.
Patent GB-227590-A (GB)
Title: Improvements in and relating to mountings for thermionic valves
IPC: H01R33/76
Filed: 1923-12-06
Abstract: 227,590. Sterling Telephone & Electric Co., Ltd., Miller, T. D. Ward-, and Holbeach, W. M. Dec. 6, 1923. Vacuum tubes.-A resilient shock - absorbing mounting is interposed between a base-plate and spaced sockets receiving the valve pins, and means are provided for preventing undue stresses arising in putting in or taking out the valve. As shown, a disc 4 of spongy rubber is interposed between a base 3 and an ebonite disc 2 carrying sockets 1 to which are riveted springs 6 engaging with the valve pins. The sockets may fit the pins loosely. Stops 7, secured to the base, limit the upward movement of the disc 2 when the valve is being removed. Terminals 5 are connected by flexible leads with the springs 6. Apertures may be provided in the discs 2, 4 to admit a screwdriver for securing the base to a panel. The sockets may be set below the surface of the ' disc 2, and the rubber disc may be secured directly to a panel.
Patent GB-697112-A (GB)
Title: Braking and locking means for electric motors
IPC: H02K7/12
Filed: 1950-12-18
Abstract: 697,112. Dynamo -- electric machines. BRIGHI, S. Dec. 18, 1950 [Dec. 19, 1949], No. 30754/50. Class 35. A motor has a brake 30 which becomes disengaged by the action of an angularly movable member 16 freely mounted on the same main rotor shaft 14 when the stator current is turned on. The member 16 carries a short-circuited winding or it may be wound so as to adjust its torque as required. On interrupting the stator current, no torque will be exerted by the member 16 and consequently the spring 32 urges the brake 30 into engagement.
Patent GB-937289-A (GB)
Title: Method and device for producing metal wire
IPC: C23F4/02
Filed: 1960-09-07
Abstract: 937,289. Making wires and ribbons; drawing; rolling. H. LASKE. Sept. 7, 1960 [Sept. 10, 1959; June 27, 1960], No. 30780/60. Classes 83 (2) and 83 (4). A method of producing very thin metal forms  by drawing or rolling with a coating facilitating the reducing process is characterized in that the vaporization temperature of the coating material is below the melting temperature of the article being processed, and in that after the reducing step the coating material is removed by vaporization. Fig. 2 shows a resistor wire 11, already drawn and still coated with the material facilitating the drawing, which is mounted by electrodes 12, 13 in a sealed glass bulb 14. The wire is heated by passing through it a current from a source 17, the current being controlled by a variable resistor 18 in conjunction with an ammeter 19. If the coating material is metallic then to prevent uncon. trolled condensation thereof on the walls of the bulb, the ends of the bulb are heated by coils 20, 21 connected to an R.F. generator 22. A cooling jacket 23 may be provided at the centre portion of the bulb, which may be evacuated or filled with an inert gas during the vaporizing step, and subsequently refilled with a gas such as hydrogen.
Patent GB-475694-A (GB)
Title: Improvements in and relating to spindle journalling arrangements adapted for turning thread-milling and thread chasing
IPC: B23G1/32
Filed: 1936-11-11
Abstract: 475,694. Lathes. HASSE & WREDE GES., C., and ROHDE, K. Nov. 11, 1936, No. 30832. [Class 83 (iii)] A spindle arrangement for a lathe is adapted to enable turning and screw-thread milling or screw-thread chasing to be performed in a single setting of a workpiece, the spindle being braced against axial displacement by means of a thrust bearing during screw-threading to take up the play necessary during turning, the thrust bearing being arranged in proximity to the work for thread-milling but for threadchasing an arrangement of the thrust bearing at any point of the work spindle may be used. The spindle a, Fig. 1, adapted for turning and thread-chasing of a workpiece in a single setting, has a high-speed drive, through the toothed wheel i for turning, which is engaged by a friction clutch k, and a slow-drive for chasing through the wheel h. With the clutch-operating cone m in the right-hand position the highspeed drive for turning is engaged, a thrust bearing q provided on the spindle having the necessary axial clearance for high-speed running determined by an adjustment p. Movement of the cone m to the left disengages the highspeed drive and compresses a spring n which acting through a collar o moves the spindle to the left and takes up the axial clearance in the thrust bearing q, the spindle is thus suitable for a slow-speed chasing operation. By arranging the thrust bearing in close proximity to the work, i.e. at the spindle head, the arrangement is suitable for thread-milling operations. In a modified arrangement suitable for turning and thread-milling, a tapered surface g, Fig. 3, is provided on the spindle head and co-operates with a similarly tapered bore c in the housing. The axial clearance is taken up automatically when the clutch k is disengaged by a part of the operating mechanism moving a cam w which engages a roller x on the arm of a rotatable nut t screw-threaded to a bush u and having a flange t<1> which engages between thrust bearings connected to the spindle. The clutch-operating member m may be provided with a braking surface, adapted to engage a stationary surface z provided on the spindle housing, to stop the spindle when moved to its extreme left-hand position.
Patent GB-933844-A (GB)
Title: Photographic objective of variable focal length
IPC: G02B15/14
Filed: 1961-08-28
Abstract: 933,844. Variable focal length objectives. CARL ZEISS-STIFTUNG, [trading asC. ZEISS, [firm of]]. Aug. 28, 1961 [Aug. 30, 1960], No. 30869/61. Class 97 (1). A photographic objective of variable focal length consists of three lens groups A, B, C, each of several elements of which the first A has collective, the second B dispersive and the third C collective refractive power, wherein the alteration of the focal length is produced by displacement of the dispersive group B and wherein simultaneously one or more elements of one or both of the other lens groups A, C are displaced in such a way that during the variation of the focal length the image position for a stationary object remains constant. This objective is characterized by the combination of the following characteristics : (a) the collective group A consists of a meniscus-shaped dispersive element, an asymmetrically biconvex collective element and a meniscus-shaped collective element, the said elements being bent in such a way that for each of them the relation bf-br > 0 is valid; (b) the dispersive group B consists of two asymmetrical dispersive elements of which the second is a doublet and both elements are bent in such a way that for each of them the relation bf-br > 0 is valid; (c) within the third collective group C there stands the diaphragm and this group consists of at least four elements of which the one immediately following the diaphragm is dispersive ; the elements standing in front of the diaphragm, the focal length of which is numerically smaller than five times the overall length of the third group C, are bent in such a way that for each of them the relation bf-br > 0 is valid wherein bf designates the refractive power of the front and br the refractive power of the rear glass-air surface of the element concerned ; (d) the sum of the refractive powers of the two surfaces bordering upon the air space containing the diaphragm is negative. Optional data are given for one example of the objective shown. U.S.A. Specification 2,873,646 is referred to.
Patent GB-480897-A (GB)
Title: Improvements relating to the pressure pipe connections and associated parts of hydraulic vehicle-tipping mechanism
IPC: B60P1/16
Filed: 1936-11-12
Abstract: 480,897. Tipping vehicles. EDWARDS, H., and EDWARDS, F. Nov. 12, 1936, No. 30879. [Class 108 (i)] In order to reduce the number of pipe connections &c. in hydraulic vehicle-tipping or tilting apparatus comprising a ram or rams to which liquid is forced by a pump from a reservoir, a member 5 of multi-tubular form is provided closely adjacent the reservoir 3 and is adapted to be connected to the pump delivery pipe 6 and to' the ram pressure feed pipe 7, and houses an automatic overload valve 8 and a release or regulator valve 13, liquid passing the valves in one direction discharging directly into the reservoir. As shown, the member 5 is cruciform having four projecting parts 51 ... 54, the parts 53, 54 housing the valves 8, 13 while the pipes 6, 7 are connected to the parts 51, 52. Increase in pressure in the pipes 6, 7 above a maximum predetermined by the pressure of a spring 10 on the ball-valve 8 causes the valve 8 to open permitting the liquid to discharge directly from the member 5 through a conduit 531 into the reservoir 3. To reduce or release the pressure in the feed pipe 7 the valve 13 is adapted to be moved from its seating 15 by a screwed rod 16, the liquid on the pipe 7 then discharging directly into the reservoir 3.
Patent GB-649779-A (GB)
Title: Improvements in or relating to electronic multiplying and dividing means
Inventor: SUTCLIFFE HENRY
IPC: G06G7/161
Filed: 1947-11-21
Abstract: 649,779. Multiplying circuits. MINISTER OF SUPPLY. Nov. 21, 1947, No. 30926. [Class 40 (i)] In a system for generating a signal representative of the product of two quantities, a rectangular wave having an amplitude proportional to the multiplicand, and a second wave having a phase relative to the first wave representative of the multiplier are generated and combined in a circuit to produce the output signal. Valves 5, 6, Fig. 1, operate as a 1 Kc/s. multivibrator producing square waves, Fig. 2, a, b, at the respective anodes. The waves are limited by diodes 7, 8 and 10, 11 to give waveforms, Fig. 2, c, d limited at an arbitary value, 40 volts and earth for the first wave and 40 volts and Vy, the multiplicand signal applied at terminal 12, for the second wave. The algebraic sum is fed to the cathode follower 14 to give an output, Fig. 2, e. A signal Vx, representing the multiplier is applied over terminal 18 to cathode follower 19 which sets the level on clamping diode 21 connected to the anode of phantastron 20. Upon the wave from valve 6 going positive, valve 20 passes current. to the anode and the run-down of anode potential occurs, Fig. 2, f. The duration of the run-down time is dependent on the initial anode potential and thus on the input voltage Vx. As the end of the run-down, phantastron 23 is triggered over coupling capacitor 24 to give a fixed run-down time and delay of one half-period of the waves. During this fixed time interval, switching valve 26 is cut-off, Fig. 2, h, hatched area, so that the anode potential may rise and diode 29 conduct. A low-impedance instrument is connected across terminals 28, the current passing through it appearing as at Fig. 2, j, the negative going portions being provided by current through adjustable resistor 43. The multiplying circuit may be employed to obtain ydx or 1/x from y and x, Figs. 3 and 4 (not shown).