baber/WOPTO huggingface dataset:
Patent GB-590011-A (GB)
Title: Improvements in or relating to rotating wing aircraft
IPC: B64C27/82
Filed: 1945-01-20
Abstract: 590,011. Controlling helicopters. JACKSON, O. C. Jan. 20, 1945, No. 1654. [Class 4] In a helicopter in which the rotor blades are mounted for flapping and pitch-change movements and blade-pitch is normally controlled by mechanism, such as a swash plate, producing a cylical variation of blade pitch, a stabilizing device is provided consisting of weighted arms mounted by horizontal and radially offset hinges on a normally vertical driveshaft, the arrangement being such that flapping of the arms, due to inclinations of the drive shaft as the helicopter pitches or rolls, produces a cyclical variation of blade-pitch which is superimposed on that produced by the swashplate &c. and tends to maintain the inclination of the blade-tip path in space constant. As shown, each blade 19 is associated with an arm 2 carrying a weight 1 and hinged at 4 to the rotor drive shaft 3, a lever 5, hinged to the arms, being connected at an intermediate point to a link 17 connected to a horn 18 on the leading edge of the blade. The inner end of the lever is connected by a link 6 to the arm 7 of a spider 7, 8, 9 and 11 by means of which a ball-race 12, 13 is universally mounted in a sleeve 10 slidable in the shaft 3. The pitch of the blades is normally adjustable by inclining the ballrace by means of a linkage 14. 15 to effect, cyclical variations, or raising and lowering the sleeve 10 to effect a simultaneous adjustment of all the blades. If the shaft 3 is temporarily inclined due to a pitching or rolling movement, the arms 2, due to their inertia, commence to flap about the hinges 4 and actuate the levers 5 to produce a cyclical variation of blade-pitch tending to prevent the inclination of the bladetip path which would otherwise occur. The duration of the flapping movement is arranged to be greater than the period of oscillation of the helicopter about the pitching or rolling axes but, in the case of a helicopter in which the rotor is inclined to produce translatory movement, it is small enough not to effect the control of the machine. The arms may be driven by a shaft remote from the rotor driveshaft. Specification 5649/14, [Class 4], is referred to.
Patent GB-1510770-A (GB)
Title: Instruments and method for measuring characteristics of only a selected portion of a transmission channel
IPC: H04B3/46
Filed: 1977-01-17
Abstract: 1510770 Testing communication channels F R BRADLEY 17 Jan 1977 [25 Feb 1976] 01673/77 Heading S1U The level of the noise component NN1 in a test signal which has been transmitted along a channel 12 is increased relative to the test tone level G 1  cos wt, while preserving the relative phases, before the signal is transmitted on to a remote test instrument via a further channel 16, to mask noise in the channel 16. The output cos wt from an oscillator 30 phase-locked 28 to the received test tone component is subtracted 22 from the received signal, with automatic gain of either signal ensuring complete cancellation of the tone component, leaving the noise component, which is amplified 34 and re-combined 36 with tone cos wt before retransmission.
Patent GB-214698-A (GB)
Title: Improvements in the construction of commutators for electric machines
IPC: H02K13/00
Filed: 1923-01-18
Abstract: 214,698. Calverley, J. E., and Highfield, W. E. Jan. 18, 1923. Commutators.-A disc-type commutator in which a moulded composition is employed for holding the segments in place, and in which the commutator is built as a separate entitv, is provided with L or T-shaped segments extending through the mould and projecting at one side thereof to form a working face and at the other side for making connections to the armature windings. In a stationary commutator, Fig. 1, the segments 2 are embedded in a ring 3 of moulded composition and extend therethrough to form a working face 17 and parts 16 to which the connectors 34 are secured. A plate 24 is bolted to the ring 3 and forms with the backplate 30 and rings 26, 28 a housing for the connecting-elements. In a rotary form the moulded ring is bolted to the armature framework and a strengthening ring of steel lined with leather or the like may be provided around its periphery, or the commutator may be supported on a. hub separate from the armature in which case strengthening rings may form part of the commutator framework. The working face of the segment may be inclined to the edge of its rear limbs.
Patent GB-476401-A (GB)
Title: Improvements in glass insulators for electrical purposes
IPC: C03B27/00
Filed: 1937-01-20
Abstract: 476,401. Tempering glass. CORNING GLASS WORKS. Jan. 20, 1937, No. 1724. Convention date, Jan. 31, 1936, [Class 56] An electric insulator having a head and a skirt, particularly of the kind used for suspending power cables, is made of glass and is hardened or tempered in such a manner that the skirt is untempered, or is less highly tempered than the head, so that breakage of the skirt does not cause the whole insulator to shatter. The glass used for the insulator may consist of 80À6 per cent of SiO2, 13À0 per cent of B2O3, 4-4 per cent of Na2O, and 2À0 per cent of Al2O3. The insulator, preferably as it is taken from the press, is heated to a temperature of 550‹ C. in a suitable furnace, or by submerging it in a bath composed of molten inorganic salt. It is then chilled in such a manner that the desired distribution of stresses is obtained. For example, a nozzle may be inserted in the pin hole of the insulator, and a stream of high velocity air directed on to the walls of the hole. A high velocity. air blast is also directed against the outer side of the head while the skirt is cooled at a slower rate. Alternatively, the pin hole and the head may be chilled by a jet of molten inorganic salt, such as a eutectic mixture of sodium nitrate and potassium nitrate, held at a temperature of 250-300‹ C., while the surfaces of the skirt may be chilled by an air blast. In another modification, the head may be highly tempered while the skirt is annealed.
Patent GB-1409763-A (GB)
Title: Musical tone wave shape generating apparatus
IPC: G10H7/04
Filed: 1973-01-12
Abstract: 1409763 Electrophonic musical instruments NIPPON GAKKI SEIZO KK 12 Jan 1973 [17 Jan 1972 (3)] 1768/73 Heading G5J An electrical waveform generator comprises memories M 1  ... M m  each storing a number N of samples of a sine wave of one of a harmonic series of frequencies f ... mf. Clock pulses at a frequency Nf from a generator 1, via an encoder 2 and decoders D 1  ... D m , simultaneously scan the corresponding samples in all memories repetitively; and the read-out signals, via respective variable-gain amplifiers VA 1 ... VA m , are mixed at a common output terminal 3 to constitute a complex waveform of fundamental frequency f. The output wave shape is determined by control units C 1  ... C m  which set the amplifier gains according to predetermined input resistances Ra 1  ... Ra m  etc. For example the resistors Ra 1  ... Ra m  are connected to a manual control VR a  which, with the said resistance values, determines the amplitude and waveform of a first signal; a second control VR b , via resistors Rb 1  ... Rb m , determines the amplitude and waveform of a second signal to be superimposed on the first; and so on. The fundamental frequency of the output signal is determined by the clock-pulse frequency Nf of the generator 1. Preferably each memory M (Fig. 2) comprises an array of potential dividers R 1a /R 1b  ... R Na / R Nb  each applying an analogue potential to the drain of one of an array of FETs T 1a  ... T Na , whose sources are connected to a common output terminal T out . Excitation of each FET gate in turn by a clock pulse produces a stepwise output signal approximating a sine wave. Memory M 1  stores a single cycle, M 2  two cycles, and so on up to M m  which stores m cycles. In a modification (Fig. 3, not shown) the digitized outputs from the memories (M a1  ... M am ) and the control units (A 1  ... A m ) are multiplied in multipliers (ML 1  ... ML m ), digitally added and converted to analogue form. In a further modification (Fig. 4, not shown) the control-unit input resistors are replaced by spectrum memories (SM 1  ... SM 20 ) each storing digitized harmonic-content signals for a desired wave. These signals, multiplied by digitized amplitude signals from units (A a1  ... A a20 ) and added to the weighted signals from other spectrum memories, are passed on to the respective harmonic-frequency multipliers (ML 1  ... ML m  as in Fig. 3).
Patent GB-685809-A (GB)
Title: Improvements in and relating to the combustion chambers of internal combustion engines of the fuel injection type
IPC: F02B77/02
Filed: 1951-01-24
Abstract: 685,809. Casting composite articles. PORSCHE KONSTRUKTIONEN GES. Jan. 24, 1951 [March 6, 1950], No. 1809/51. Class 83 (i). [Also in Group XXVII] A layer of heat-insulating material 3, e.g a paste of graphite or ceramic powder, or soot, and a binding agent such as turpentine, is applied to the outer surface of a hollow combustion chamber 1 and, before or after the paste has dried, portions of a cylinder head 2 are cast around the chamber. Heat insulation may be effected by confined gases or vapours formed from the paste during casting of the head. There may be external annular projections on a part of the chamber in contact with the head.
Patent GB-1357312-A (GB)
Title: Device for measuring the temperature of ferromagnetic bodies
IPC: G01K7/36
Filed: 1973-01-12
Abstract: 1357312 Electrophysical measurement - temperature NAUCHNO-ISSLEDOVATELSKY I OPYTNO-KONSTRUKTORSKY INSTITUT AUTOMATIZATSII CHERNOI METALLURGII NIIACHERMET 12 Jan 1973 1812/73 Heading G1N The invention relates to the electromagnetic measurement of temperature, e.g. of steel section, in a rolling mill by passing it through the magnetic field of a coil which is sufficient to SATURATE it. As shown series connected inductors 1, 2, have secondaries 3, 4 feeding rectifiers 5, 6 connected in series opposition across a potentiometer 17. With a cold sample 20 of appropriate section in coil 2, the potentiometer output U is balanced against a reference voltage U2. Thereafter the reading of meter 19 will vary with the temperature of the sample.
Patent GB-160993-A (GB)
Title: Improvements in phonograph stopping devices
IPC: G11B17/02
Filed: 1920-01-20
Abstract: 160,993. Brandstetter, J. Jan. 20, 1920. Fluid-pressure; periodic.-A brake for phonograph turntables is held out of action by fluidpressure so long as the tone-arm is in motion over the record. In Fig. 2 the brake-pad 9 on a bell-crank 7 is normally pressed by a spring 10 against a, peripheral flange under the turntable 3. So long however as a record is being played, the brake is held out of action by air pressure in the cylinder 11 acting on the piston 13, this air pressure being maintained by a second piston 12 linked to the tone-arm. When the motion of the tone-arm ceases at the end of the record, pressure falls off due to the escape of air through an adjustable hole 21. A flap valve in the piston 12 enables the device to be reset, and a safety-valve 28 is provided. In the form shown in Fig. 6. the brake lever (not shown) carries a spring- mounted brake-shoe and moves between two fixed stops against one of which is held (in the operative position) by the rotation of the turntable. It is controlled by link-work operated by the leaky and heavy piston 42, pressure being maintained while a record is running by the piston 49 which is operated through link-work by the tone-arm, the weight of this piston being sufficient to compensate for friction. Resetting of the device is facilitated by the valve piston 56, which rises on a fall of pressure and admits air from the hole 61 through an annular channel 59, radial hole 60, and central vertical hole (not seen). The piston 42 also functions as a safetyvalve in virtue of the passage 62. The admission valve 56 may be dispensed with if, as in Fig. 8, a channel 63 be formed in the wall of the piston 42, so that air is admitted through the passage 62 when the piston falls to a given extent. The piston may be connected to the brake-controlling linkwork through a spring 66, so that airadmission only takes place after the brake has been brought into action and the spring 66 extended.
Patent GB-239770-A (GB)
Title: Improvements in automatic railway car-couplings
IPC: B61G3/04
Filed: 1925-01-21
Abstract: 239,770. Soc. Anon. Usines E. Henricot. Nov. 13, 1924, [Convention date]. Couplings, automatic; couplings, automatic, convertible to non-automatic.-In an automatic coupling having a pivoted knuckle, the lock is arranged laterally' relatively to the draw-axis, and the central part of the coupling is provided with a cavity for the reception of an auxiliary transition coupling element arranged substantially in the draw-axis. The knuckle 4 is pivoted to the coupling head at 5 and has a locking-arm 24 and a forward extension 25 which may be in the same plane with the locking-arm, and which is adapted to swing through a slot in the coupler face situated above a recess 36 which houses the end link of a non-automatic coupling. The lock 6, Fig. 10, slides vertically in a cavity 35 and may be operated from above the coupler head by a link 7 or from below by a link 9, the end of the link engaging the lock by means of lugs 11 adapted to slide in an inclined slot 12. The lock is provided with a lock-set seat 22, a bearing-surface 21, Fig. 9, which rests on the locking-arm 24 in the open position of the knuckle and with an upward projection 21' adapted to strike the arm 28 of the knuckle thrower when the lock is raised by the link 7 or 9. In the locked position of the coupling, Fig. 4, the locking-arm 24 engages the lock 6 on an inclined surface 19 and the position of the lock is such that an inclined surface 13 on the link 7 or 9, Fig. 10, slides below an inclined recess 14 in the wall of the coupler and prevents the lock from creeping upwardly under draught. The coupling is unlocked by an upward movement of the link 7 or 9 which moves the inclined surface 13 from under the recess 14 and permits the lock 6 to be raised on to the lock-set seat 22 to allow the locking arm 24 to swing under the lock as the vehicles move apart; a further upward movement of the lock causes the projection 21<1> to strike the arm 28 of the knuckle thrower to swing the knuckle into the open position in readiness for automatic coupling.
Patent GB-1460425-A (GB)
Title: Cartridge tape player including a magnetic tape head indexing assembly
IPC: G11B15/26
Filed: 1975-01-16
Abstract: 1460425 Tape head track changing MOTOROLA Inc 16 Jan 1975 [23 Jan 1974] 1924/75 Heading G5R A cartridge-type magnetic tape player has a magnetic head 24 indexable for track changing by a rotatable cam 44, and an actuator 92 operable to pivot a lever 88 so that one end portion thereof engages a rotating flywheel 56 of a tape drive capstan 54 whereby flywheel 56 causes lever 88 to move longitudinally to impart rotation to cam 44 to index the head 24. Head 24 is mounted in a movable block 36 supported from a fixed block 30 by arms 32, 34 pivoted to blocks 30, 36, a spring 38 urging cam follower 42 on block 36 to engage cam surfaces 50. Operation of an electromagnet 92 by end of tape sensor 98 or by a switch 25 operated by a pushbutton 22 attracts end 90 of lever 88, mounted in slots 82, 84, to pivot the lever about support 80 and bring lever projection 100 into engagement with one or the other of recesses 68, 70 in the lower face of flywheel 56, or of a hub 64 attached thereto, whereby lever 88 is moved longitudinally so that pawl 104 thereon rotates cam 44 via ratchet 106 for head indexing. In a modification, electromagnet 92 is omitted and a slidable arm (122), Figs. 5, 6 (not shown), operated by a manual pushbutton (22a) pivots lever 88 into the position to engage flywheel 56. A spring 108 returns lever 88 to its inoperative position and may be of such a strength that successive indexing steps are produced for as long as pushbutton 22 or (22a) is pressed, or a lighter spring 108 may be used so that each operation of pushbutton 22 or (22a) only indexes head 24 by one step.
Patent GB-726066-A (GB)
Title: Improvements in starting equipment for resonant pulse jet combustion device
IPC: F02K7/02
Filed: 1953-01-23
Abstract: 726,066. Electric generators. TENNEY, W. L. Jan. 23, 1953 [April 16, 1952], No. 2005/53. Class 35. [Also in Groups XXVI and XXVIII] A device for starting a resonant pulse jet engine comprises a manually-operated aircompressing pump in combination with an ignition generator, both being operated simultaneously. The pump comprises a cylinder 30 and a piston 35 carried on a piston-rod 37 operated by a handle 49 to force air through a delivery tube 57. The piston-rod has rack teeth 38 on one side for driving a pinion 46 connected, if desired, through a free-wheel clutch 47, to the electric generator, e.g. a magneto. The cylinder is mounted on a pivot 31 by means of which it may be swung into or out of the operative position and locked there by means of a slotted arm 50 and nut 55. A modification is described in which an additional generator on the same shaft supplies current to a glow plug. Specification 641,539, [Group XXVI], is referred to.
Patent GB-632059-A (GB)
Title: Improvements in electric control devices having indicating means
IPC: H05B3/34
Filed: 1948-01-22
Abstract: 632,059. Control systems for consumption apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 22, 1948, No. 2013. Convention date, Jan. 22, 1947. [Class 38 (iv)] [Also in Group XXXVII] The circuit of an electric heater, such as a blanket 1, is controlled by the motor-driven, cam-operated switch 4, 5 of Specification 610,485, [Group XXXVII], the periods of energization and de-energization of the blanket being varied by a pointer 14 of translucent material illuminated by a lamp 16. The latter is supplied from a winding 23 inductively energized from the field 9 of the cam-driving motor, over a selector switch 20 and a resistance 24, which is also in series with contacts 4, 5 and the blanket 1, so that when the latter is being supplied the volts drop across resistance 24 opposes the volts from winding 23 and the lamp shines dimly. Conversely, when contacts 4, 5 are open, the lamp is fed with the full volts from winding 23 and shines brightly. Instead of a separate winding, the lamp may be fed from a tapping on the winding 9 (Fig. 4, not shown).
Patent GB-908376-A (GB)
Title: An improved method and apparatus for manufacturing powdered garlic
IPC: A23B7/02
Filed: 1961-01-18
Abstract: Powdered garlic is manufactured by cutting garlic bulbs into thin slices transversely of the ducts extending through them, adding an edible and juice-absorbing material, preferably corn starch, to the slices, heating the slices under sub-atmospheric pressure in a dryer to a temperature of 40-60 DEG  C. so as to cause the slices to expand and exhale substantially the whole of their moisture content, and cooling and powdering the dried slices.  In a preferred procedure the garlic bulbs are stripped of their outermost skins and washed prior to slicing, slices of approximately 1 mm. in thickness are cut and these are centrifuged to expel part of their moisture content prior to the addition of the corn starch.  A drying apparatus is disclosed (see Group XIII).
Patent GB-377569-A (GB)
Title: An improved electric switch more especially designed for use in automatically actuated switching apparatus
IPC: H01H9/40
Filed: 1932-01-23
Abstract: 377,569. Preventing sparking in switches. LANDIS ET GYR SOC. ANON., 1, Hofstrasse, Zug, Switzerland. Jan. 23, 1932, No. 2114. Convention date, Jan. 29, 1931. [Class 38 (v).] In a switch adapted for making and breaking a single circuit two series of contactcatrying springs 7, 8 are operated by a bar 16 arranged between the springs and the base and pivoted at 14, the series 8 which are arranged in parallel and carry the main contacts 13 cooperating with fixed contacts 2 and the series 7 which are arranged in series and carry the auxiliary " sparking contacts 12 co-operating with a fixed bridging bar contact 5. The bar 5 and the contacts 12 are higher than the contacts 2, 13 so that in the closed position the strips 7 are further from the base than the strips 8. In opening the switch the bar 16 first engages the springs 8 and opens the contacts 2, 13 so that all the current flows through the " series " contacts 12, 5. Further movement of the bar 16 breaks the circuit finally at the contacts 12, 5. The contacts 2, 13 are preferably silver and the contacts 5, 12 copper. The bar 16 may be operated by a time switch or motor.
Patent GB-537750-A (GB)
Title: Improvements in or relating to tobacco pipes and to holders for cigarettes and cigars
IPC: A24F1/00
Filed: 1940-02-03
Abstract: 537,750. Tobacco-pipe cleaners. HALL & FITZGERALD, Ltd., and DAVIS, E. T. Feb. 3, 1940, No. 2137. Drawings to Specification. [Class 130] The stem and base of the bowl are occupied by a cleaner, consisting of looped or helicallyarranged wire, with a handle projecting into the mouthpiece-bore.
Patent GB-670424-A (GB)
Title: A method of producing p-aminosalicylamides
IPC: C07C233/00
Filed: 1949-01-26
Abstract: A p-aminosalicylamide of the formula <FORM:0670424/IV (b)/1> where X signifies an amino group in which both hydrogen atoms may be free or either or both may be replaced by an aliphatic or aromatic radical, is obtained by hydrogenating a compound of the formula <FORM:0670424/IV (b)/2> where X has the above meaning, Y is a nitro, azo or carbobenzyloxyamino radical, and Z is hydrogen or a benzyl group, preferably in the presence of a hydrogenation catalyst. Detailed examples are given.
Patent GB-540289-A (GB)
Title: Improvements in set-back arming detents for projectiles
IPC: F42C15/26
Filed: 1940-02-05
Abstract: 540,289. Projectile fuzes. TURNER, G. F. B., and REDGRAVE, K. Feb. 5, 1940, No. 2216. [Class 9 (i)] Relates to set-back detents for projectile fuzes of the kind comprising a body B and stem 6, the stem sliding during set-back within a guide 2 against the action of a spring C and being turned by centrifugal force into the in-operative position shown. According to the invention, the detent parts are contained within a casing A forming a separate entity for ready insertion in and removal from a pocket in the fuze body. In the form shown the casing A is indented at the bottom to retain a baseplug 4. The plug 4 may be replaced by bent-over lugs and a tool provided for compressing the spring. The detent may serve to release a safety shutter or bolt.
Patent GB-872997-A (GB)
Title: Substituted ún-aminoalkoxy-acyl benzenes and processes for their manufacture
IPC: C07D295/10
Filed: 1958-01-23
Abstract: The invention comprises compounds of the general formula <FORM:0872997/IV (b)/1> (wherein R represents a hydrocarbon radical which may be substituted, R1 a C1-C5 alkyl group or a halogen atom (preferably in position 4 or 5), B a C1-C6 alkylene group, and R2 a dialkylamino group in which each alkyl group contains up to 4 carbon atoms, or a morpholino, piperidino or pyrrolidino group) and their acid addition salts, and the preparation thereof by interaction of compounds of the general formulae <FORM:0872997/IV (b)/2> and YR2 (wherein either X represents a -B-halogen group and Y a hydrogen atom, or X represents a hydrogen or sodium atom and Y a halogen -B- group), followed, if desired, by reaction of the resulting amine with an acid.  The products possess psychopharmacological activity and are also useful as local anaesthetitcs, analgesics and antihistamins.