baber/WOPTO huggingface dataset:
Patent GB-972615-A (GB)
Title: Self-energising disc brake
IPC: F16D55/00
Filed: 1961-02-27
Abstract: 972,615. Disc brakes. F. J. HOPE. Feb. 27, 1962 [Feb. 27, 1961], No. 7181/61. Heading F2E. A mechanically actuated servo disc brake particularly for a vehicle includes face cam operated master disc brake means adapted to engage the planar sides of the disc and effective under a force generated by the frictional drag of the rotating disc to bring into braking operation face cam operated slave disc brake means. As shown, a lever 3 operated by the driver through an air piston-cylinder device 2, 1 is formed with oppositely directed cams 3a, 3b and is mounted on a shaft 3c with the cams 3a, 3b in contact with cams on a part 4 secured to the shaft and a part 5 carried by a resilient torque arm 9 pivotally movable about the axle 11. The shaft 3c also carries a part 5a which together with part 5 have friction pads 6, 7 mounted thereon so that on pivotal movement of the lever 3 the pads contact the brake disc 8. Simultaneously with the master brake being applied rotation of the disc 8 is effective to pivot the arm 9 which operates through link 12 and cam arms 13 the slave brakes 16. The latter are mounted on an arm 14 secured to the axle and are of the same construction as the master brake means. The lever 3 may be actuated by an hydraulic system, a vacuum system, an electrical system or a direct mechanical linkage. In modifications the slave brakes may be operated through compensating arms and secondary links, the brake parts may be spring- loaded to maintain the friction pads out of contact with the disc, and the pivotal movement of the torque arm 9 may be assisted or resisted by the action of a spring or springs. The master brake may be supported on direct linkages which actuate the slave brakes. Two master brakes may be provided on the ends of a diametric torque arm, operation of either of which causes the operation of the slave brakes. Specification 972,616 is referred to.
Patent GB-527492-A (GB)
Title: Improvements in or relating to aerial bombs
IPC: F42C15/28
Filed: 1939-03-04
Abstract: 527,492. Bombs; fuzes. NELLES, L. H. March 4, 1939, No. 7194. [Classes 9 (i) and 9 (ii)]  In an aerial bomb having in the nose a combustible time fuze for firing the main explosive charge, igniting and percussion devices being respectively associated with said time fuze and with the main charge and controlled by an airdriven spindle, the spindle co-operates at two axially spaced points, respectively, in a releasable holding manner with displaceable members of said igniting and percussion devices, to release the former and render the latter effective after a predetermined number of rotations of the spindle. The shaft 9 of a propeller A passes through a chamber 5 and into a chamber 6 both formed in the nose of the bomb. An enlarged screw-threaded portion 11 of the shaft engages an internally threaded holder 12 of a fuzeigniting cap 12<SP>1</SP> within the chamber 5 and a similar threaded portion of the shaft within the chamber 6 engages an internally-threaded block 16. A time fuze 8 extends from the chamber 5 through a fixed ring 3 and a rotatable ring 4 to ' communicate with the main charge. When the bomb is released, the propeller turns the shaft 9 thus causing the members 12, 16 to move axially till they are free from the threaded portions of the shaft. A spring 13 then drives the cap 12<SP>1</SP> on to the firing pins 19 thus igniting the time fuze 8. If, meanwhile, the bomb strikes an objective, the block 17 carrying a percussion cap 17<SP>1</SP> will be thrown on to a firing pin 14 at the end of the shaft 9 to fire the main charge. The bomb is supported beneath the aircraft by saddle members 21 and may be released by withdrawing a pin which passes through an eye 25 in the bomb and through a suspension strap 26. A member a prevents rotation of the propeller before release. The fuze ring 4 may be adjusted from the aircraft by means of a rack 29 meshing with teeth on the ring.
Patent GB-1075461-A (GB)
Title: Ultrasonic testing of tubes
Inventor: WILLIAMS JOHN ROBERT
IPC: G01N29/04
Filed: 1964-02-21
Abstract: 1,075,461. Ultrasonic flaw detection. ACCLES & POLLOCK Ltd. Nov. 27, 1964 [Feb. 21, 1964], No. 7269/64. Heading H4D. In a flaw-detection system for tubes, ultrasonic energy is directed into the wall of a tube from at least one transmitter and two receivers are so arranged as to receive energy reflected from both longitudinally oriented and transversely oriented flaws. In the embodiment of Fig. 6 two transmitters 15, 22 and two receivers 18, 21 are mounted on a carriage and positioned such that energy from the transmitters 15, 22 is reflected by a longitudinally oriented flaw 19 into receivers 21, 18 respectively and by a transversely oriented flaw 17 into receivers 18, 21 respectively. The magnitude of the signals received in the receivers 18, 21 enables the position of the flaw and its orientation to be determined. For continuous testing of lengths of tube the tube is rotated about its longitudinal axis in a tank of coupling-liquid, and either the carriage is moved along the tube or the carriage is fixed and the tube is moved longitudinally. Instead of rotating the tube, the carriage may be rotated. The transmitters 15,22 and receivers 18, 21 are adjustably mounted on the carriage and are tilted and spaced to give the desired results. An acoustic shield, attached to the carriage and resting on the tube, prevents direct transfer of energy from the transmitters 15, 22 to the receivers 18, 21 and locates them relative to the tube. A detailed calculation is given for positioning and angling the transmitters 15, 22 and receivers 18, 21 to detect flaws assumed to lie halfway through the wall of the tube. In a second embodiment (Figs. 1, 2, 3, not shown) only one transmitter (15) is used.
Patent GB-1271067-A (GB)
Title: Thread canister
IPC: B65H49/08
Filed: 1969-04-01
Abstract: 1,271,067. Thread dispensers. SOO VALLEY CO. Inc. 1 April, 1969 [12 April, 1968], No. 7316/71. Divided out of 1,257,350. Heading DIJ. [Also in Division A4]  The description relates to the same thread canister as in Specification 1,257,350, but the claims are for a recessed base in combination with a spool of thread, a spigot from the base being located in a bore of the spool.
Patent GB-842194-A (GB)
Title: Improvements in or relating to electro-mechanical high frequency filters
IPC: B62J6/00
Filed: 1958-03-07
Abstract: 842,194. Electromechanical filters. TELEFUNKEN G.m.b.H. March 7, 1958 [March 20, 1957], No. 7407/58. Class 40(8). An electromechanical high frequency filter comprises a plurality of parallel mechanical resonators adapted to vibrate resonantly in the longitudinal mode, which are coupled by mechanical lines extending perpendicularly to the direction of the longitudinal axes of the resonators. Cylindrical metal resonators 1, 2 and 3 vibrate as shown and are coupled by wires 4, 5, 6, 7 which bend and transfer the vibrations from resonator to resonator. Input and output ferrite transducers 8 and 9 are coupled to the filter by longitudinally vibrating couplers 14, 15. In other embodiments of the invention (not shown) the transverse couplers are attached to various parts of the resonators to vary the coupling and the resonators may be formed with hemi-spherical ends to reduce the production of spurious frequencies.
Patent GB-416426-A (GB)
Title: Improvements in sound-on-film recording apparatus
IPC: G11B7/00
Filed: 1933-03-11
Abstract: 416,426. Optical sound - recording apparatus. SCHLESINGER, M. A., 218, West 42nd Street, New York, U.S.A. March 11, 1933, No. 7458. [Class 40 (ii).] A photographic sound record of the type having varying density and constant width is made on a film by modulating light from a glow lamp in accordance with sound waves, and at the same time controlling automatically by electrical means a shutter which allows light from the lamp to fall on the film when sound is to be recorded but which is interposed to cut off the light when there is no sound. As shown, the apparatus comprises a shutter 41 which is located between the lamp 11 and the film 44, and is operatively associated with a galvanometer G, connected in series with a resistance 14 which is shunted by a condenser 14<1>. The galvanometer is in parallel with the lamp 11 in the output circuit of a power amplifier 10, in which a coupling resistance 20 and a blocking condenser 13 are also arranged as shown. The amplifier 10 is fed from a two-stage amplifier 4, 7 to which a microphone 1 is connected. An auxiliary amplifier, which may be a transformer 23, is in a branch of the output circuit of the amplifier 7, and is connected to a rectifying network consisting of four rectifiers 36-39 in a Wheatstone bridge arrangement. The points 30, 31 of the network are joined to a large reservoir condenser 16, which is connected as shown to the galvanometer circuit. The condenser thus serves as a source of direct current, auxiliary to the battery 18 with which the galvanometer is in series, its potential varying with the volume of sound being recorded. In the absence of sound, the normal current through the galvanometer is such that the shutter 41 is held in closed position ; when sound impinges on the microphone, the condenser 16 becomes charged, and as a result the galvanometer is sufficiently energized to open the shutter, so that recording can take place. Two forms of shutter, actuated by a galvanometer, one of which is an iris diaphragm, and the other a blade shutter, are shown.
Patent GB-667839-A (GB)
Title: Improvements in or relating to high frequency induction heating
IPC: H05B6/06
Filed: 1950-03-27
Abstract: 667,839. Induction heating. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. March 27, 1950. [May 14, 1949] No. 7491/50. Class 39(iii) A high frequency inductor unit includes a work receiving coil 12 and a power-control coil 14 in which an electrically conducting metallic bar or slug 32 is inserted to vary the degree of heating of the workpiece W. The slug may have various. shapes; the coils are water cooled and of at least one turn. In one embodiment the slug 32, Fig. 2, is tapered and water cooled. Apparatus for heating an elongated workpiece includes a vertically movable framework 50, Fig. 4, supporting a workpiece 82, and a slug 80, the inductor unit 4 being fixedly supported by means not shown. At a pre-determined point in the downward travel of the framework the slug enters the coil 14 to decrease the unit inductance and thereby increase the workpiece heating.
Patent GB-576197-A (GB)
Title: Improvements in or connected with volume and reverberation indicators
IPC: G01H7/00
Filed: 1944-04-25
Abstract: 576,197. Cinema apparatus. HODGKINS, H. W. HASTINGS-, and TICKFORD, Ltd. April 25, 1944, No. 7665. [Class 118 (ii)] An apparatus giving, in the projection room, a visible indication of the volume level in the auditorium of a cinema of the sound projected from a film comprises a milliameter 30, Fig. 1, calibrated in phons and connected to the output of a rectifier 12 in circuit with an amplifier 6 fed by leads 7 from microphones on the back wall of the auditorium. The milliameter is also provided with a second scale giving the percentage of reverberation in the auditorium; when it is desired to ascertain this percentage a slider 32 coacting with a calibration shunt 31 is moved away from an adjustable stop 33 until the pointer registers the maximum of the phon scale (zero on the reverberation scale) and a switch 23, 24 is thrown from the position shown to make contact at 25, 27 so that the output of a second rectifier 13 in circuit with an amplifier 8 fed by leads 9 from a microphone over the proscenium arch is placed in circuit and is in anti-phase to that from the back wall microphones. In another form, Fig. 3, two separate meters are provided, a milliameter 30a giving a volume level indication in phons and a balance type milliameter 37 with a permanent magnet armature N.S. giving the reverberation percentage.
Patent GB-647136-A (GB)
Title: Directional antenna systems
IPC: H01Q19/08
Filed: 1947-03-20
Abstract: 647,136. Aerials. PHILCO CORPORATION. March 20, 1947, No. 7696. Convention date, March 28, 1946. [Class 40 (vii)] A directive aerial system comprises an aerial structure having an aperture through which radio waves are transmitted or received, and a metallic diffracting-plate situated wholly outside the aerial structure substantially in front of the aperture thereof and at a distance of approximately a quarter-wavelength therefrom. The diffracting-plate distorts the wave-front of waves radiated from the aerial, producing a substantially planar front from a curved front, whereby the overall directivity of the system is increased. In Fig. 1A, metallic disc 9, having a diameter of slightly less than a half-wavelength at the operating frequency, is spaced approximately a quarter-wavelength from the mouth of the horn radiator 4. The disc is supported upon a dielectric rod 10 which is mounted upon a plate of dielectric material which is fixed over the aperture of the horn. The horn is excited from a probe 6 coupled to a coaxial feeder; the end-plate 8 is made movable so that the feeder may be correctly matched to the aerial system. In Fig. 2 a biconical aerial co-operates with a coaxial, annular, metallic ring 35, the diameter of which is approximately a half-wavelength greater than the maximum diameter of the cones. The invention is applicable to an aerial system comprising a dipole and spherical reflector. The Specification as open to inspection under Sect. 91 also describes a system comprising a plurality of metallic discs mounted upon a dielectric supporting-disc and arranged in front of a horn aperture together with a further disc supported upon a rod as in Fig. 1. This subjectmatter does not appear in the Specification as accepted.
Patent GB-674951-A (GB)
Title: Improvements relating to brake mechanism
IPC: B60T11/04
Filed: 1949-03-22
Abstract: 674,951. Vehicle brake transmission. HAIG, G. B., and HAIG, C. B. Aug. 31, 1950 [March 22, 1949], No. 7728/49. Class 103 (i). An operating mechanism for the brakes on a pair of steerable road wheels 1 connected by a tie bar 6 for simultaneous pivotal movement comprises a coaxial member 8 rotatably supported on the bar 6 and connected to the brake shoe actuators by a bracket 9 and rod 10. The tubular member 8 has secured at right angles to it a pair of arms 11 bridged by a member 12 which is slidably engaged by the lower disclike end 16 of the pedal member 17 by which the brakes may be applied. The connection between the bracket 9 and rod 10 may be a ball- and-socket joint.
Patent GB-953438-A (GB)
Title: Improvements in apparatus for cleaning ditches or dykes
IPC: E02F5/02
Filed: 1959-03-05
Abstract: 953,438. Ditch-clearing scoops. B. O STURGIS June 7, 1960 [March 5, 1959], No. 7742/59. Heading E1F. A ditch-digging or clearing unit for mounting on the lift linkage system 27 of a tractor comprises a boom structure 11, 13 to which at 14 is pivoted a scoop 21 which, during excavation, is held in position for digging by a cable and chain 22, 23 secured to the scoop and to the boom at 24. A further cable 48 extends from the point of attachment of the chain 23 to the scoop, this cable extending over a pulley 49 on the boom and about a pulley 47 on a link 45 before being dead ended at 24 on the boom. The link 45 is pivoted at 145 to the boom and pivotally secured to the link 45 is a link 42 pivotally connected to a slotted bar 32 in turn pivotally connected by a link 39 pivoted on the tractor. Except when tilting of the scoop is to occur for dumping purposes the link 32, which extends through the bifurcated end of a post 30 rigid with the boom, is locked to the post and so to the boom by a pin 34 that extends from one to the other of the limbs of the post 30 to pass through a longitudinally extending slot 33 in the link and engage a detent surface 36 of the slot. When dumping is to occur the link 32 is swung upwards by a pawl 56 on a handactuated lever 53 pivoted on the post 30 so that the pin 34 clears the detent 36 so that the linkage system 39, 32, 42, 45 moves relative to the boom as it is swung up by the tractor lift linkage to cause the link 45 to swing forward and downwards towards the boom so that the cable 48 causes the scoop to swing upwards.
Patent GB-350903-A (GB)
Title: Improvements in multiple ampul
IPC: B65D81/32
Filed: 1930-03-10
Abstract: 350,903. Ampoules and ampouleholders. KABNICK, S., 1410, Spruce Street, Philadelphia, U.S.A. March 10, 1930, No. 7782. Convention date, March 13, 1929. [Classes 81 (i) and 81 (ii).] In a double glass ampoule containing two substances tc be mixed only at the time of use, the first compartment 13, which is sealed by fusion to the upper rim of the second compartment 18, is formed with a sealed tubular stem 14 which is fused to the remote end of the second compartment and serves as the dividing partition between the two compartments. Scratches or incisions are made in the compartment 18 just below its upper rim, and in the stem 14 near its junction with the compartment 18 so that the two compartments may readily be broken apart and at the same time communication established between them. The upper tip 16 of the compartment 13 is broken after separation of the two compartments to allow the liquid in the compartment 13 to flow freely into the lower compartment. The lower part 18 may be placed in a recess 28 in a holder 26, Fig. 4, so that a syringe may readily be charged therefrom. The holder may have a number of recesses of various sizes.
Patent GB-199143-A (GB)
Title: Improvements relating to devices for delivering and applying paint, gum and other viscous fluids
IPC: B05C17/00
Filed: 1922-03-17
Abstract: 199,143. Cameron, D., and MacWilliam, J. March 17, 1922. Tubes or containers, collapsable.-Gum, paint, &c. are applied by means of a device consisting of a tubular container having an applying- nozzle at one end and at the other a flexible diaphragm which can be pressed inwards by a pin sliding axially in an extension of the container. The diaphragm 2 is gripped between a shoulder 6 on the container and a sleeve 7 is held in place by a screwed plug 8 in a bore in which slides the pin 9. The pin is operated by a transversely sliding plunger 11 having an inclined face 10 bearing on the rounded end of the pin. In a modification the pin projects through the back of the plug 8 and is operated directly against the action of a spring. The applying nozzle 4 is of rubber, having a slot-like orifice with serrated edges, and is held in place as shown; the Provisional Specification states that it may be solid with channels on its surface for the passage of the gum &c.
Patent GB-1490843-A (GB)
Title: Linearizing elements for measuring instruments
IPC: G01F1/24
Filed: 1976-02-27
Abstract: 1490843 Variable area flowmeters; indicating apparatus FISCHER & PORTER CO 27 Feb 1976 13 April 1975] 07847/76 Headings G1J and G1R A meter comprises an element 13 which moves vertically in accordance with a parameter being measured, a magnet is fixed to the element; a follower magnet 16 rotatably mounted on a shaft 17 and a weight 20 eccentrically mounted on the shaft to provide a varying moment which compensates for the non-linearity between vertical movement of the element and the parameter. In a flowmeter a float 13 moves in a variable area tube 12 and the magnet 15 may be inside the tube. The relative positions of the magnets and of the weight 20 are adjustable.
Patent GB-1501044-A (GB)
Title: Airplanes having fuselage housed thrust-reversable power plant installations
IPC: B64C25/42
Filed: 1976-02-27
Abstract: 1501044 Aircraft thrust reversers BOEING CO 27 Feb 1976 [27 March 1975] 07879/76 Heading B7G In an aircraft having a jet engine 2 located within the aft portion of the fuselage, the sole thrust-reverser arrangement of the engine comprises a duct 8 which only directs the jet exhaust downwardly and forwardly. The exhaust is selectively proportional between the duct 8 and a rearward-discharge duct 7 by means of deflector doors 10, 12. The doors are operated conjointly by an electric motor 16 or an hydraulic jack (not shown). Alternatively, a mechanism (not shown) may be provided to displace the leading edges of the doors out from behind shoulders 14 and 17, the doors being then swung outwardly by the jet exhaust gas against the action of a return spring. A noise-suppressing lining 18, 20 is provided on the bottom and opposite upright sides of the duct 7.
Patent GB-1014057-A (GB)
Title: Dihydroquinoline carboxylic acid amides and a process for their preparation
Filed: 1963-02-27
Abstract: The invention comprises dihydroquinoline carboxylic acid amides of the formula <FORM:1014057/C2/1> wherein R1 represents an alkyl, aralkyl or halogeno or nitro-substituted aralkyl group, R2 represents a hydrogen atom or an alkyl, haloalkyl, acylaminophenyl, phenyl, halophenyl, nitrophenyl, phenoxyalkyl or heterocyclic group, X represents hydrogen, R3 represents an N-alkyl, N-aryl, N-cycloalkyl or N-aralkyl-substituted carbamoyl group in which the aryl or aralkyl radicals may be substituted in the ring by chlorine atoms or by methyl, methoxy or dimethylamino groups, R4 represents a hydrogen atom or an alkyl, aryl, alkoxy or cyano group, and Y represents hydrogen or halogen atom or one Y radical and R4 together represent a fused benzene nucleus.  The compounds are prepared by reacting a quinoline salt of the formula <FORM:1014057/C2/2> with an isonitrile of the formula <FORM:1014057/C2/3> in the presence of an alkali metal or trialkylammonium salt of a carboxylic acid of the formula R2 . COOH wherein R5 represents an alkyl, aryl, aralkyl or cycloalkyl group in which the aryl or aralkyl radicals may be substituted in the ring by chlorine atoms or by methyl, methoxy or dimethylamino groups.
Patent GB-982772-A (GB)
Title: Improvements in or relating to electric calibrating apparatus
IPC: G05F1/52
Filed: 1961-03-06
Abstract: 982,772. Calibrating instruments. DAYSTROM Inc. March 6, 1961 [March 21, 1960], No. 8066/61. Heading G1U. [Also in Division G3] A calibrating apparatus provides a wide range of selected and stabilized magnitudes of voltage or currents for D.C. instrument testing. As shown, a millivoltmeter 172 to be calibrated is connected across output terminals 16, 16<SP>1</SP> of the calibrator which is supplied from an A.C. source 38 over a transformer 41 and a full wave rectifier 71. The regulated output voltage is developed between the cathode 94 of a series valve 87 and a lead wire 77 connecting terminal 16<SP>1</SP> to the centre-tap 78 on the transformer secondary winding. A voltage proportional to the output of the calibrator is applied to one input terminal 176 of an amplifier 127 having another input terminal 177 connected to an adjustable reference voltage source which includes a battery 157 connected across a voltage divider network 154, 155, 24<SP>1</SP>. The amplifier 127 has no output if the voltages at terminals 176 and 177 are equal; if these voltages differ, an output signal from the amplifier is applied to the grid 97 of a valve 88 which controls the conductivity of the valve 87 to bring the inputs to the amplifier into balance. A regulated voltage of a selected magnitude is thus maintained between terminals 16, 16<SP>1</SP> The circuit can also function as a constant current source for the calibration of ammeters (Fig. 7, not shown). To ensure the instantaneous opening of a protective fuse or circuit breaker the apparatus may include a thyratron which is arranged to fire and draw an excessively large current should an overload occur. Means may be provided to vary the output of the calibrator smoothly over the entire range for the purpose of "friction" tests on instruments.