baber/WOPTO huggingface dataset:
Patent GB-141936-A (GB)
Title: Improvements in lock-nuts
IPC: F16B39/32
Filed: 1919-05-21
Abstract: 141,936. Mansell, W. H. May 21, 1919. Locking nuts.-A groove is cut through the faces of a nut to receive a plate G secured in position by a pin. The inner edge of the plate is inclined to form a path for a spring-controlled roller L which engages the bolt and locks the nut against reverse rotation. The roller may be knurled to increase the grip and is carried in a fork sliding in a slot in the plate G. When it is desired to unscrew the nut, the roller may be released by a plunger N carried by the nut. This plunger may be actuated by the spanner. The plunger may be omitted and the roller released by a wire &c.
Patent GB-1167829-A (GB)
Title: Recovery of Metals such as Vanadium from Asphaltenes.
Inventor: HEIJDE HERMAN BERNARD VAN DER
IPC: C22B34/22
Filed: 1968-03-15
Abstract: 1,167,829. Purifying asphaltenes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 15 March, 1968 [17 March, 1967], No. 12786/68. Heading C5E. [Also in Division C5] Metals, especially V, are removed from oilfree asphaltenes by treatment with an acid and oxidant or an oxidizing acid. Asphaltenes are crude oil distillation residues which are insoluble in 3-10 C hydrocarbons. Preferably 2-10 M HNO 3  is used as oxidizing acid; other suitable acids are H 2 SO 4 ,H 3 PO 4 , and hydrohalic acids, and suitable oxidants are H 2 O 2  and alkali metal chlorates or bichromates. O 2  may additionally be used to oxidize reduction products, e.g. NO and NO 2  to HNO 3 . Treatment may be effected at 15-100‹ C. for 1 min.-24 hrs. Using HNO 3 , the temperature may initially be 15-50‹ C. to preoxidize the asphaltenes, and the metals are then extracted at 50-100‹ C. Alternatively, the asphaltenes may be preoxidized with air at 150-200‹ C. The HNO 3  solution used may contain V<SP>5+</SP> compounds and be saturated at below 50‹ C., treatment being effected at above 50‹ C. A wetting agent may be present during treatment. The metalcontaining acid solution may be recycled, and eventually treated with O 2  or air at above 50‹ C. then cooled to precipitate V<SP>5+</SP>compounds, mother liquor being recycled.
Patent GB-405601-A (GB)
Title: Improvements in or relating to tooth brushes
IPC: A46B5/00
Filed: 1932-05-04
Abstract: 405,601. Electromedical appliances. MAIGROT, R., 154, Avenue des Champs Elysees, La Perreux, Seine, GIBERT, M., 41, Allee Nicolas Carnot, Rainey, Seine-et-Oise, and CANN, M., 29, Rue de Paradis, Paris, all in France. May 4, 1932, No. 12839. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 4, 1933]. [Class 81 (ii).] A tooth-brush head A of fibre, rubber, metal, or other material capable of conducting electricity when moistened, is connected to a source of direct, or high or lowfrequency alternating, current. As shown, a conducting casing D encloses a battery C having a spring connection F with the casing and a connection E to a conductor B in the brush-stock leading to plates in the brush head the circuit being completed through the body. The brush stock is carried by a screw cap G which permits replacement of the battery and, by partial unscrewing, serves as a switch. The casing D may be of insulating material provided or not with conducting strips ; in the latter case separate leads are taken to the brush from the poles of the battery.
Patent GB-1092762-A (GB)
Title: Production of melamine
Inventor: HAMPRECHT GUENTHER
IPC: C07D251/60
Filed: 1965-03-26
Abstract: Melamine is produced by heating urea and/or its thermal decomposition products at above 280 DEG  C. in two stages in the presence of catalysts and ammonia or gases containing ammonia (e.g. recycled gas), the first stage comprising vaporizing the urea or decomposition product at 370 DEG -450 DEG  C., and introducing the vapour and gas ito a second stage at 330 DEG -370 DEG  C., the catalysts in the two stages being at least partly exchanged continuously or periodically. The second stage may consist of a plurality of zones; the catalysts may be fluidized.  An example uses alumina as catalyst.
Patent GB-730969-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64D9/00
Filed: 1952-05-21
Abstract: 730,969. Freight carrying aircraft. BLACKBURN & GENERAL AIRCRAFT, Ltd., BRUMBY, H., and WARBURTON, D. S. May 19, 1953 [May 21, 1952], No. 12877/52. Class 4. An aircraft has a freight compartment along the side walls of which are channel-section supporting rails intermediate the floor and ceiling, whereby bulky articles such as motor cars on special carriers, goods containers, cattle pens, sets of passenger seats or floor units all terminating in rollers may be raised to the level of the rails and slide therealong to be carried thereby. A deep fuselage 3, having a tail-carrying boom 4, has channel section supporting rails 16, 17 secured to the inside walls thereof, the open sides of the channels facing inwards to accommodate rollers mounted on the supporting arms 46 of loading platforms 43 or the like. A lift is located in the door end of the fuselage and comprises rails 21, 22, matching the rails 16, 17, respectively raised and lowered by screw jacks so that a platform 43 may be loaded on the rails 21, 22 and raised to a level where it may be run on to the rails 16, 17. The platforms may be locked in position by pins inserted through holes drilled in the flanges of the channels and they may be arranged to form a continuous floor to support seats or freight or they may be constructed individually as removable freight containers or cattle pens. Specifications 727,159, 730,970 and 730,971, [both in Group XXX], are referred to.
Patent GB-729143-A (GB)
Title: Improvements in or relating to furniture
IPC: A47C11/00
Filed: 1952-05-22
Abstract: 729,143. Seat frames. FINERTY, W. J. Aug. 21, 1953 [May 22, 1952], No. 12938/52. Class 52 (2). A one-piece construction of front leg, rear leg and arm-rest has secured thereto, at spaced points, a one-piece supporting member, with an upstanding portion, to carry the seat proper and a back rest. As shown at each side, a front leg 12, a rear leg 13 and an arm-rest 14 are formed by bending one strip of wood or metal, the arm-rest 14 preferably sloping downwardly towards the rear leg 13. The legs 12, 13 are recessed to enable the side members 15, 16 to be mounted by means of half-joints, the members 15, 16 being recessed at positions corresponding to those on the legs, and the parts secured by bolts &c. The side members 15, 16 are preferably curved members to which seat slats may be secured an intermediate member 24 being provided if desired.
Patent GB-1078253-A (GB)
Title: Improvements in or relating to electric switches of the electrical conducting fluid type
Inventor: SILVER GERALD
IPC: H01H29/10
Filed: 1965-03-26
Abstract: 1,078,253. Liquid switch contacts. ENGEL & GIBBS Ltd. Nov. 12, 1965 [March 26, 1965], No. 12989/65. Heading H2B. A liquid contact switch operated by tilting comprises a glass envelope divided into two chambers by a glass baffle to prevent the conducting fluid flowing from one end of the envelope to the other within the envelope, the chambers being connected by an external passage, with two electrodes in one chamber. The baffle is intended to prevent inadvertent operation by jolting for instance, as may occur in a vehicle. In the embodiment described, three chambers 14, 15, 16 are formed by baffles 12, 13, the outer chambers 14, 16 being connected by tube 17. The switch is mounted by a strap on a panel 24 pivoted at 25 and urged in a counter-clockwise direction by spring 26, being restrained by a pin 27 engaging latch 28. When pin 27 is removed, such as by a float in a transformer tank, the panel pivots against stop 29 moving the switch into a horizontal position so that mercury 18 flows from chamber 16 into chamber 14 bridging electrodes 19, 20. Apertures 22 in baffles 12, 13 permit the passage of the air or inert gas in the envelope. The provision of two baffles with an aperture 30 in baffle 12 to enable the mercury to flow into intermediate chamber 15 ensures a smoother flow of mercury between chambers 14 and 16.
Patent GB-163265-A (GB)
Title: Improvements in or relating to means for testing the progress of working in machines for grinding bodies of revolution
IPC: B23Q17/09
Filed: 1921-05-06
Abstract: 163,265. Aktiebolaget Svenska Kullagerfabriken. May 12, 1920, [Convention date]. Gauges. - The progress of work in machines for grinding bodies of revolution, for example rollers for roller bearings, is tested without stopping the machine by a calliper or like gauge arranged concentrically and rotating with the working-spindle 1 of the machine and movable axially thereof to test the work 2. The gauge comprises a fixed abutment 6 and an adjustable abutment 7 carried by a sleeve 3 constrained to rotate with the spindle, but slidable axially thereof, by the engagement of a pin 4 attached to the spindle with a slot 5 in the sleeve. The gauge may be mounted upon the centre supporting the work, the centre being rotated. Movement of the gauge may be controlled by the feeding-mechanism of the grinding-disc, so that the gauge is advanced during the movement of the grinding-disc away from the work. A de-clutching or cut-off device may be connected to the gauge to arrest the feed of the grinding-disc automatically when the has the desired diameter, that is, when the gauge can be moved past the body.
Patent GB-604112-A (GB)
Title: Improvements in or relating to electro-magnetic motors
IPC: H01H63/24
Filed: 1944-07-07
Abstract: 604,112. Motors. TELEFONAKTIEBOLAGET L. M. ERICSSON. July 7, 1944, No. 13044. Convention date, July 9, 1943. [Class 35] [Also in Group XXXIX] In an electro-magnetic motor for operation of teletechnical instruments, e.g. automatic telephone selectors by means of electric impulses, the rotor is driven one angular step for each impulse, and the stator has a separate winding for each direction of rotation, the rotor being indexed into the next zero position after each impulse. A three-point armature 11 is mounted on a shaft 12 together with an indexing stud 22 for centering it and an insulating cam 25 adapted to open the contacts 28, 29 and 26, 27 to de-energize the stator windings 15 and 18 respectively. Energization of, say, winding 18 causes the rotor to move into the position shown in broken lines and when the current is interrupted by the cam the action of the springs 24 on the centering stud 22 causes it to complete the movement into the next zero position thus disengaging the cam 25 from the interrupter. The springs 24 may be replaced by a flat spring acting on a triangular stud. In a modification, Fig. 2 (not shown), the centering stud 22 is replaced by a permanent magnet incorporated in the stator and a demagnetizing coil on the rotor shaft is energized to oppose this flux when either of the stator coils is energized, so that the rotor may move. De-energization of the demagnetizing coil causes the rotor to complete its motion into the next position as before. In Fig. 3, which is of similar design to that described in Specification 594,521, two motors as in Fig. 2 are built together, 61, 62 being the armatures 63, 64 the stator electro-magnets, 65, 66 the permanent magnets and 67, 68 the demagnetizing windings on the rotor shafts. A pair of interrupters, one for each direction of rotation are operated by either of the cams on the rotor shafts.
Patent GB-1012201-A (GB)
Title: Thermal relay
IPC: H01H61/02
Filed: 1964-03-26
Abstract: 1,012,201. Thermal switches RANCO Inc. March 26, 1964 [April 10, 1963], No. 13055/64. Heading H2B. A snap - action switch has a movable contact arm 22, pivoted at 21, and a stuck-out lower spring tongue 30 seated in a V-shaped exterior 25c of a lever 25 also pivoted at 21, such that movement by a bimetal 46 of a driver member 42 engaging the end 25d of the lever 25 causes the toggle arrangement of lever 25 and spring 30 to go over-centre and move contact arm 22 with a snap-action between fixed contacts 16, 17. An electrical resistance heater 35 heats bimetal 40. An ambient temperature compensating bimetal 50 acts on end 42c of member. 42, and also serves as a calibrating load spring for resilient bimetal 40, being adjustable via a screw 54 in a U- shaped support 51. Stops 32, 33 limit movement of lever 25, and the driving member 42 is held connected with lever 25 and bimetals 40, 50 by spaced bearing members 44.
Patent GB-881920-A (GB)
Title: Improvements relating to brakes for strip or foil in rolling mills
IPC: B21B39/08
Filed: 1960-04-12
Abstract: 881,920. Compressed air brakes. ALUMINIUM-INDUSTRIE A.G. April 12, 1960 [April 18, 1959], No. 13066/60. Class 103 (1). [Also in Group XXII] In a brake comprising brake plates 6 and 5 between which strip or foil passes to a rolling stand at least one of the plates is urged towards the other by a cushion of compressed air acting substantially on the whole area of the plate. The air cushion may be directly applied to the plate 5 which fits tightly in a support 1 or alternatively the compressed air is contained in a flexible rubber plastic or metal foil bag in which case the plate 5. need not be a tight fit. Compressed air may be applied to the upper plate 6 or to both plates. In the Fig. 2 embodiment the plate 6 is pivoted at one end to facilitate introduction of the strip. The plates 6, 5 are covered with felt strips 7.
Patent GB-1168618-A (GB)
Title: Improvements relating to Radar Systems.
Inventor: ROBERTSON GEORGE OGILVIE
IPC: G01S13/93
Filed: 1966-03-25
Abstract: 1,168,618. Radar; gating circuits. FERRANTI Ltd. 17 March, 1967 [25 March, 1966], No. 13206/66. Headings H3P and H4D. In a radar system the radiated signal is a continuous wave (C.W.) swept periodically through a predetermined frequency band at a repetition frequency such that the interval between successive sweeps allows the receipt of detectable echo signals from all objects within the actual range of the system, the receiver includes a stage tuned to respond only to signals picked up in that frequency band, means define a sampling period initiated in synchronism with a transmission of the frequency band and terminated before the transmission of the next, and means for comparing the energy of a transmitter break-through signal with the total energy of all signals (including the transmitter break-through) picked up by the receiver within the sampling period. The comparison means provides an indication when a disparity corresponding to the presence of an object within the desired range is revealed. The radar affords warning of impending collision between ground vehicles and has a range of the order of a few hundred feet. In one embodiment the frequency sweep originated by modulator 12, Fig. 1, output Fig. 2a, is as depicted in Fig. 2b. A portion of the transmitter output is fed to a mixer 16 coupled to a fixed-frequency local oscillator 17 which also feeds receiver mixer 25. The modulator output, Fig. 2a, also controls switches 22, 32. The leading edge of each transmitter break-through pulse 51, Fig. 2c, triggers a generator 41 to afford a gating pulse 52, Fig. 2d, for amplifier 35, the pulse width defining the sampling period and being adjustable. An analogous gating pulse 54, Fig. 2f, is effective for amplifier 36. Attenuator 15 is adjusted such that the energy of each pulse 51 is the same as that of each transmitter break-through pulse 53, Fig. 2e. The switching system permits I.F. amplifier 27 to be used for deriving both comparison signals. For reception of weak echoes the necessary reduction of the tapped-off transmitter portion may not trigger generator 41; independent triggering by a stronger tapped-off signal is then arranged, Fig. 4 (not shown). If the mean value of successive break-through signals is known, the reference signal to the comparator is taken from a D.C. source via an attenuator. Two " main " amplifiers 36 may be utilized, with sampling gates corresponding to different ranges, Figs. 6 and 7 (neither shown). Gating circuit, Fig. 9. Complementary square waves a, a<SP>1</SP> switch I.F. signals from mixers 16, 25 alternately to I.F. amplifier 27.
Patent GB-600277-A (GB)
Title: Improvements in and relating to safety razors
IPC: B26B21/18
Filed: 1945-05-26
Abstract: 600,277. Safety razors. HEIDE, H. C. (Gillette Safety Razor Co.). May 26, 1945, No. 13240. [Class 30] A safety razor, adapted to receive an apertured blade such as a blade having an open or closed-ended medial slot, and adapted to be maintained as a connected assembly while a blade is being inserted or withdrawn, is provided with spring means which retain the cap and guard members in a position in which co-operating interlocking means between them prevent detachment of the cap and which interlocking means are disengaged when the cap and guard are pressed together against the action of the spring to allow complete separation of the parts. The guard member 10, Figs. 1, 2 and 3, which is chamfered at its front or blade receiving end and notched at its rear edge for connection with the cap member, has a rib 14 at the front end and spurs 15 and a rib 17 at the rear end which serve to locate the blade, the ribs 14 and 17 being tapered at both ends to raise the end of the blade as it is inserted and removed. The lower face of the guard member 10 has a recess 18, with shoulders 19, which extend from the rear edge to just past the central hole 13. The cap 20 has longitudinal blade engaging shoulders 22 and at its rear end, downwardly extending arms 23 which merge into a plate 24 adapted to engage in the recess 18 and having an openended keyhole slot 25. An arched spring 27, secured by a rivet 28 to the cap 20, normally presses the cap and guard apart so that the circular part of the slot 25 engages a collar 35 on the handle 34 fixed to the guard. The handle contains a screwed spindle 36, which, when engaged with a threaded hole 21 in the cap, serves to adjust the clamping pressure on the blade. When the spindle 36 is released from the cap, it is withdrawn clear of the blade by a spring 38, so that the blade can be inserted or withdrawn. In this position of the parts, if the cap and guard are pressed together, the circular part of the slot 25 is moved clear of the collar 35, allowing the cap to be slidden endwise from the guard, the narrow part of the slot 25 passing the reduced part of the handle beneath the collar 35. In a modification, instead of the spring 27 between the cap and guard, a washer on the handle 34, is pressed by a helical spring into engagement with the lower surface of the cap. Specification 600,278 is referred to.
Patent GB-1486069-A (GB)
Title: Lipolytic enzyme flavouring system
IPC: A23L27/20
Filed: 1975-04-01
Abstract: 1486069 Enzyme flavouring compositions BAXTER TRAVENOL LABORATORIES Inc 1 April 1975 [8 April 1974] 13319/75 Heading C3H [Also in Division A2] An enzymatic flavour developing substance comprises a lipolytic enzyme composition having an EA/LA ratio of greater than one and recovered from the fermented growth product of Mucon miehei. The ratio EA/LA connotes esterase to lipase activities. Esterase activity is measured by effect on water-soluble fats i.e. C 4  to C 10  and lipase activity on water-insoluble fats i.e. C 12  to C 22 . Recovery of the enzyme composition from the fermentation wash can be by filtration at pH 4-5, extraction of the filter cake at pH 10-12, acidification of the extract to a pH of about 7 and recovery by fitration, concentration and drying. Examples describe the flavouring of dairy products.
Patent GB-416691-A (GB)
Title: New or improved means for mechanically producing plans from photographs
IPC: G01C11/00
Filed: 1933-05-10
Abstract: 416,691. Photogrammetry. BURCHALL, P. R., 84, Gresham Road, Staines, Middlesex, and WILLIAMSON, C. M., Litchfield Gardens, Willesden Green, London. May 10, 1933, No. 13596. [Class 97 (ii).] Relates to map producing apparatus in which two photographs are set up with objectives in the same relation as when the photographs were taken but with arbitrary separation of the objectives and in which a pair of marks an appropriate distance apart and connected to a plotter is moved about with the line joining them maintained parallel to itself to effect successive coincidences of the images of the marks on the photographs with corresponding points in the two photographs. The marks are supported by a carriage movable in a plane under the control of articulated linkage which maintains the carriage parallel with itself. In the form shown in Fig. 2, two photographs taken vertically downwards or corrected for tilt of the taking camera are mounted in a pair of frames 1. 2 held by nuts 4 and rotatable about the plumb points of the photographs in a support 3. The latter is mounted on an upper base board 7 which carries objectives 5 and reflectors 6 enabling images of the marks to be projected on to the photographs. A carriage 11, resting by castors 12 on a lower baseboard 9 and constrained to move parallel to itself thereon by a double parallelogram linkage, carries a pencil or cutter 18 adapted to plot on the surface 17 and a plate 19 supporting a pair of lamp houses 23, 24 each containing a lamp 25 and having a small hole 26 forming the mark. The plate 19 is vertically adjustable on the carriage 11 by rack and pinion 20 and the lamp house 23 vertically adjustable on the plate 19 by screw 21. The lamp house 24 is horizontally adjustable on the plate 19 by screw 27 to enable the distance between the marks 26 to be adjusted. The photographs are preferably viewed through a stereoscope consisting of two pairs of mu rors 29, 30. In the modification shown in Fig. 5, the frame 1 (or 2), mirror 6 and objective 5 are mounted in a housing 35 shaped so as to be adjustable in the spherical seating 34, thus enabling slight tilt of the camera when taking the photograph to be compensated.
Patent GB-125635-A (GB)
Title: Improvements in Fuses for Explosive Shells.
Inventor: DOWDING JAMES FRANCIS
IPC: F42C15/26
Filed: 1916-09-26
Abstract: 125,635. Dowding, J. F., and Dowding, R. V. Sept. 26, 1916. Projectile fuses.-Relates to fuses of the kind comprising a graze pellet, a transverse centrifugal bolt, and an inertia detent arranged in a longitudinal passage. According to the invention, the pellet c, centrifugal bolt f, and detent g, instead of being fitted directly into the body of the fuse, are carried by a plug c secured within the body. Instead of being screwed within the. fuse-body a as shown, the plug c may be held in place in its recess by the usual adapter, and the end of the recess which encloses the detent spring h may be burred over, a closing-plug i thus being dispensed with.
Patent GB-1089887-A (GB)
Title: Rotary switch
Inventor: HEATH CLARENCE WILLANS
IPC: H01H19/62
Filed: 1965-03-31
Abstract: 1,089,887. Cam-operated switches. CARR FASTENER CO. Ltd. Feb. 7, 1966 [March 31, 1965], No. 13637/65. Heading H2B. A rotary switch comprises a casing 1, a contact terminal 10 located in the casing and provided with a tailpiece 17 for attachment to a lead wire, a contact arm 5, 6 mounted in the casing with one end 7, 8 projecting into a slot 9 in the contact terminal 10 so that the arm 5, 6 is pivoted in the slot 9 about the one end 7, 8, the arm 5, 6 having a contact element 5a, 6a for engagement with a fixed contact 3, 3a, 4, 4a, a rotor 12 being rotatably mounted in the casing for pivoting the contact arm 5, 6 relative to the fixed contact and resilient means 13 being provided biasing the arm 5, 6 towards the rotor 12. Resilient means 13 comprises a coil spring enclosed in a flexible housing 14 of insulating material. Pressure in excess of that necessary to close the contacts is absorbed by spring 13.