baber/WOPTO huggingface dataset:
Patent GB-1391833-A (GB)
Title: Pneumatic tyres for aeroplanes
IPC: B60C9/20
Filed: 1972-05-01
Abstract: 1391833 Pneumatic tyres DUNLOP Ltd 1 May 1972 [3 May 1971] 20075/72 Heading B7C A pneumatic tyre, particularly for aircraft, comprises a carcass 1 and tread portion 2 having interposed therebetween a band consisting of one or more plies of rubberized cord fabric, the cords being disposed at an angle not greater than 30 degrees, and preferably in the range 15 to 20 degrees, with the mid-circumferential plane of the tyre, and the band being symmetrical with respect to this plane and of a width not greater than two thirds the width of the tread portion. Where there are a plurality of plies each group of two should have a width not greater than two thirds the width of the radially inwardly preceeding group. The plies of fabric should contain 80 to 130 cords per 10 cm. width and the tread portion be provided with grooves 3 only in the zone which covers the band. A cushion of rubber may be interposed between the carcass and the band. The angle of the cords in each ply may be in the same or opposite direction with respect to the midcircumferential plane as an adjacent ply. The cords may be natural or synthetic textiles or fabrics, or metals.
Patent GB-334001-A (GB)
Title: Improvements in portable electric handlamp holders
IPC: F21L14/02
Filed: 1929-07-01
Abstract: 334,001. Nettl, R. July 1, 1929. Holders. - In an electric hand-lamp a holder H is secured in position by means of an externally threaded insulating sleeve G screwing into an internally threaded flange D on the handle A.
Patent GB-209777-A (GB)
Title: Improvements in shedding motions for looms for weaving
IPC: D03C5/02
Filed: 1922-07-22
Abstract: 209,777. Watson, R. July 22, 1922. Shedding-motions.-The heald straps k<1> are connected to bosses on an oscillating shaft K geared to an oscillating shaft G provided with a slotted lever H engaged by bowls on a transverse rod d on a connecting rod C connected to a crank pin a<1> on a crank wheel A driven from the crank shaft b. The connecting rod C may comprise two side rods c connected by the rod d, which carries six bowls, two of which engage the lever H, whilst the others engage guide-rails f, f<1> in one or two guide-brackets F fixed to a bracket E. The guide-rails are shaped to cause the end of the connecting rod to move in an inclined path at each end of the traverse whereby a " dwell is imparted to the healds, the extent of which may be varied by bolting the crank pin a<1> in one of several holes a<2>, a<3>, whilst the lift of the healds is varied by changing gearing g, g<1>. The shedding motion may be placed above or below the healds, or two such motions may be employed, one above and the other below the healds. According to the Provisional Specification, the rails are adjustable and four, or six or more bowls &c. may be used.
Patent GB-726289-A (GB)
Title: Faucet
IPC: F16K27/02
Filed: 1953-07-21
Abstract: 726,289. Valves. ROSS, J. C. July 21, 1953, No. 20195/53. Class 135. A faucet comprises a housing 10 formed within its lower end with an upwardly facing conical shoulder, a tubular nipple 14 extending upwardly into the lower end of the housing and having a conically flared upper end portion in sealing contact with the shoulder, and a plug 13 threaded into the upper end of the housing to provide a chamber 38 between the housing and the plug, there being an outlet 40 from the chamber through the housing. The plug terminates in a conical taper that fits tightly inside the flared end of the nipple, and it is provided with an axial bore opening into the nipple and with ports 37 leading from the bore into the chamber. A valve 32 is situated at the lower end of the bore, and adjustable means at the upper end of the plug control the opening and closing of the valve. The valve consists of an inverted cup seating against the lower edge of a hardened metal ring 35 and opening against the flow when the valve stem 31 is depressed by a knob 60 which can be screwed. down over a threaded ring 25 screwed on to the upper end of the plug 13. Horizontal grooves in the valve stem prevent leakage past the stem. The flowing fluid, impinging on fins 63 in the cup 32 and flowing out through radial openings in the side of the cup, rotates the valve and keeps the bearing surfaces clean. The fins may be replaced by tangential slots in the side of the cup, or by a saw-tooth edge to the bottom thereof.
Patent GB-404688-A (GB)
Title: Improvements in time switches
IPC: G04C23/34
Filed: 1932-07-16
Abstract: 404,688. Time switches. SANGAMO ELECTRIC CO., Springfield, Illinois, U.S.A. July 16, 1932, No. 20222. Convention date, June 9. [Class 38 (v).] A time-switch having a contact-controlling member 25 moved alternately " on and " off " by the action of tappets on a 24 hour dial 3, may also be actuated at any time by hand without upsetting subsequent clockwork actuation and has means for putting out of action on any selected day of the week. The member 25 is pivoted at 26 and has a roller 22 which engages a spring 11 allowing a contact 15 on this to engage a fixed contact 16 when the member 25 is rotated in a clockwise-direction. The member 25 may also carry a second roller 23 engaging a second spring contact carrying member 12, which has a ramp 28 causing the spring 12 to move downwards and separate contacts when the above clockwise movement occurs. The member 25 has an arm 31 connected by a spring 41 with a bell-crank lever 33 pivoted at 34 to a bell-crank lever 36 the upper arm of which carries a roller 60 and is controlled by a spring 38. At a predetermined time the " on " tappet 5 engages the roller 60 pressing this down and then suddenly releasing it. This causes a bodily lowering and release of the lover 33, the upper arm of which slips along below the arm 31 till a tooth on it engages below the arm 31 so that during the release movement the arm 31 is raised and the member 25 is rotated into its "on" position. Later the "off" tappet 6 engages a turned up end 51 of the lever 33 moving this till its tooth disengages the arm 31, allowing this and the member 25 to rotate back into the " off " position. The switch may also be moved " on " and "off" manually by pressing on the arms 53 and 51 respectively. After a manual " on " operation, subsequent engagement of the " on " tappet 5 with the roller 60 would cause as before a slow lowering of the lever 33 and the arm 31 would slowly follow it causing a slow and undesired "off" movement of the member 25. To prevent this a weighted lever 45 is provided which engages the arm 31 and prevents its movement. The lever 45 has a hook engaging the arm 33 so that it moves with the arm 33 out of engagement with the arm 31 when the arm 33 is actuated by the " off " tappet or manually. The means for putting the device out of action for a day comprises a seven-spoke star wheel 61 moved on once a day by a pin on the tappet 5 and having holes in its arms in any one of which a peg may be placed. This peg on the selected day strikes a lever 63 and moves the end 66 of it into engagement with the end 51 of the lever 33, preventing this lever from actuating the arm 31.
Patent GB-1079448-A (GB)
Title: Density measuring instrument
Inventor: SION NICHOLAS
IPC: G01N9/32
Filed: 1963-05-21
Abstract: 1,079,448. Measuring density. ULTRA ELECTRONICS Ltd. May 21, 1964 [May 21, 1963], No. 20235/63. Heading G1N. The density of a liquid is measured by producing a vortex in the liquid and measuring the capacitance between a fixed plate and a conductive diaphragm in the vortex. Fuel for an aircraft engine passes through inlet 15 to chamber 14, through a centre-bored bolt 19 to a chamber 16, and through outlet 17. An impeller 21 in chamber 16 is driven at constant speed and produces a parabolic variation in pressure across two rigidly interconnected diaphragms 12, varying their spacing from rigid centre plate 13. Chamber 14 is separated from plate 13 by a second metal diaphragm 12. A modification is referred to in which the output is amplified and fed to a motor which returns the diaphragm to its null position.
Patent GB-516310-A (GB)
Title: Improvements in and relating to nozzles for spraying paint and other liquids
IPC: B05B1/34
Filed: 1938-07-08
Abstract: 516,310. Spray-producers. LOGETTE, A. I., and DAINTON,-E. H. July 8, 1938, No. 20312. [Class 69 (iii)] . A spraying nozzle comprises a helically grooved plug 6 furnished at its inlet end with a coned or tapered guide 7 and a spraying head 2 furnished at its delivery end with a coned whirl chamber 4 the plug 6 being secured in the interior of the nozzle so that its coned guide projects into the inlet while the outlet terminates in the coned mixing chamber. The plug is secured in the nozzle by a flange 6a clamped between the body 1 and spray head 2. Interchangeable plugs 6 are provided to vary the quality of the spray. The head may be provided with a shield 9, Fig. 5, having inclined passages 10 through which air may be drawn to facilitate the distribution of liquid.
Patent GB-1082736-A (GB)
Title: Leak testing method and apparatus
IPC: G07C3/14
Filed: 1965-05-13
Abstract: 1,082,736. Testing for leaks. AJEM LABORATORIES Inc. May 13, 1965 [June 16, 1964], No.20340/65. Heading G1N. A part is tested for leaks by forming a closed chamber in the part, supplying fluid under pressure to the chamber and to a standard chamber, segregating the chambers when pressures therein are equal, and generating a voltage proportional to any difference in pressure between the chambers after a predetermined time. Air is supplied to the test chamber under pressure and if the air in the chamber fails to reach the required pressure after a predetermined time due to a large leak the part is automatically rejected. If the required pressure is reached the pressure source is cut-off and the pressure in the chamber is reduced to a predetermined value. The test chamber is then connected to the standard chamber and sufficient time is allowed for the pressures to equalize. A valve in the connection between the chambers is then closed so that the test chamber connects with a chamber 27 on one side of a diaphragm 29 in a measuring instrument while the standard chamber connects with chamber 28. Electrodes 33, 34 are connected to a source 37 of highfrequency A. C., so that air between the electrodes is ionized. It is stated that any deflection of the diaphragm gives rise to a direct voltage proportional to the deflection, and this voltage is applied to meter 39. Light beams are directed through slit 49 in a shield plate on the meter and through slits in adjustable arms 47, 48, and impinge on two photo-cells (not shown), each connected in series with a relay coil. If the meter needle 40 is deflected sufficiently to block light passing to either photo-cell, the corresponding relay is deenergized, a normally lit "accept" lamp is extinguished and a "reject" lamp is lit. The part may also be automatically rejected. In the fluid-pressure system all the conduits and the standard chamber are preferably formed by passages in a solid mainfold block and the various valves are mounted directly on the block Figs. 6 to 10 (not shown) The operation of the apparatus is preferably controlled by a two-bank stepping switch, the first bank of which is connected to R. C. timing circuits controlling stepping of the switch, while the second bank is connected to circuits including silicon controlled rectifiers for controlling actuation of the pressure valves and the "accept" and "reject" lamps Fig. 12 (not shown). Faulty operation of the apparatus leading to a higher pressure in the test chamber than in the standard chamber causes the needle of meter 39 to move to the right and blocks light which normally falls on the second photo-cell. This also causes the "reject" lamp to light and the part to be rejected. Repeated rejection of parts thus indicates a fault. The parts under test may be on an intermittently moving conveyer belt.
Patent GB-580812-A (GB)
Title: Improvements in arrangements for coupling wide frequency band antennae to transmission lines
IPC: H01Q9/28
Filed: 1943-12-06
Abstract: 580,812. Aerial coupling arrangements. STANDARD TELEPHONES & CABLES, Ltd., and WILLOUGHBY, E. O. Dec. 6, 1943, No. 20396. [Classes 40 (iii) and 40 (v)] For improving impedance matching over a broad band of ultra-high frequencies in coupling a transmission line to an aerial, the transmission line terminates in a parallel-resonant circuit which is connected to the resonant aerial circuit through (a) a series-tuned circuit or (b) a halfwave transmission line of chosen characteristic impedance. The aerial may be of the unbalanced end-fed type half-wave resonant at the mean frequency, or a balanced dipole having each element half-wave resonant; in either case the aerial elements are of conical form or of cylindrical form with a conical portion at the feeding end. As shown in Fig. 5, the feed line 3 is tapped on a tuned circuit 1, 2 which is connected by a half-wave line 9 to a dipole aerial comprising two conical surfaces 4. An earth plate may replace the lower member 4, and the line 9 may be a concentric line extending vertically downwards below the upper member 4 and the earth plate (Figs. 6 and 7, not shown). In Fig. 8, the coupling circuit comprises a length of high impedance line 17 constituting a series inductance, its ends being formed as stubs 81 standing within the open ends of the aerial members 4 and constituting series capacities. In Fig. 9, the short line 17 is coupled through a capacity 8 to a closed stub 10 loaded to half-wave resonance by an adjustable capacity 12 at or near its mid-point connected between the inner and outer conductors. The lower stub portion is thus brought to quarter-wave resonance by series tuning, and the upper portion forms a parallel-tuned circuit. In Fig. 11, the feed line 3 is tapped on a paralleltuned circuit 1, 2 the capacity 2 being connected between the inner conductors of two coaxial lines, the outers of which are connected to the small ends of the conical aerial surfaces 4, and are closed at their outer ends 18. The outer portions of these lines are shorter than a quarter wave-length and are tuned to resonance by the variable condensers 19. The inner portions of the lines are a quarter-wave long and operate as impedance inverters so that the effect of a series-tuned circuit is presented between the feed circuit 1-3 and the aerial 4. A similar circuit for an unbalanced aerial is described with reference to Fig. 12 (not shown),
Patent GB-887429-A (GB)
Title: Improvements in or relating to analytical balances
IPC: G01G1/00
Filed: 1960-06-10
Abstract: 887,429. Weighing apparatus. METTLER, E., [trading as METTLER, FABRIK FUR ANALYSENWAAGEN, E.]. June 10, 1960 [March 25, 1960], No. 20513/60. Class 143. An analytical balance comprises a support 2 on which are mounted a beam 10 and a device for indicating its inclination, the support resting on a plurality of exposed columns and a housing occupying a part of the space between the columns, which housing encloses only a scale pan 20 and incorporates a door for the introduction of material to be weighed. A further housing 9 encloses the beam and its indicator and is preferably detachably secured to the support 2. As shown the support columns 3, 4, 5 are secured to a base 1 standing on feet 6, 7, 8 which are extensions of the columns and a pair 6, 7 of them may be screw-threaded into their columns for levelling the apparatus. The pan-enclosing housing comprises two substantially half-cylindrical glass walls 22, 23 of which the latter is secured to the rotatable disc 24 to provide the door. The enclosed scale pan depends from the permanently counter-weighted assymetric beam 10 through an aperture in the support 2 and loose weights (not shown) are employed to determine the major part of the load, the last weight digits being displayed in the window 15 by an optical projection system comprising a lamp (not shown), the graticule 12, lens 13 and mirror 14. The level of the support 2 may be made independent of temperature variations by equalising the thermal expansion of the columns 3 to 5.
Patent GB-382267-A (GB)
Title: Improvements in and relating to electric motor control
IPC: B60L15/34
Filed: 1931-07-17
Abstract: 382,267. Master control of motors; actuating controllers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) July 17, 1931, No. 20549. Convention date, July 18, 1930. [Class 38 (iii).] Driving and braking controllers 1, 2 respectively of a multiple unit train control system are actuated by independent oil-operated and return-biased pistons 3, 4, the former moving in a cylinder having a normally closed admission valve 15 and a normally open escape valve 16, and the latter moving in a cylinder having a single normally open admission and escape valve 17. The valves are electrically controlled by a master controller 20 or 21, and means are provided for creating and releasing the oil pressure, further means being provided by which the master controller causes the valves, and the pressure releasing means to operate in correct sequence. In the position of the controller 20 shown, the valves 15, 17 are closed, and the valve 16 is open. Upon movement of the controller 20 to position r3, the valve 16 is closed and the valve 15 is opened, so that oil under the pressure of a spring 9 is forced to operate the controller 1, which may be held in a given position by returning the controller 20 to position r2, and thereby closing the valve 15. By returning the controller 20 to position r1 the valve 15 is closed, the valve 16 is opened, and a solenoid 11 is energized to compress the spring 9, and restore the oil pressure, by drawing the oil through a non-return valve 36. When the controller 20 is moved to position b3, the valve 17 is opened, and the controller 2 is operated, and is held in any desired position by moving the controller 20 to position b2 and thereby closing the valve 17. For emergency braking, the controller 20 is moved to position b4, in which a coil 50 is energized by current from the motor I acting as a generator, and assists the spring 9. To restore the oil pressure the controller 20 is moved to position b1. The valve 17 is arranged to be closed by energization of its coil through a contact 56 on the controller 1 when the latter is in an operating position, and is arranged to open on failure of voltage. The controllers 1, 2 are operated through quick-stepping devices 38, 39. The speed of movement of the controller 1 is influenced by a band-brake 58, operated by a main current coil 57, and the controller 2 is regulated in accordance with the braking current from the motor II, acting as a generator, by means of a coil 27 acting on the valve 17. The oil pressure may be produced by an axledriven compressor, or by a motor-driven pump, in which case the solenoid 11 actuates a valve.
Patent GB-1386148-A (GB)
Title: Drive unit for magnetic tape
IPC: G11B15/67
Filed: 1972-05-03
Abstract: 1386148 Feeding record tapes STORAGE TECHNOLOGY CORP 3 May 1972 [3 May 1971] 20667/72 Heading G5R During normal operation magnetic tape 15 is fed from a reel 11 to a reel 12 by way of a pair of vacuum buffer columns 13, 14, a capstan 16, a magnetic head 17, and a guide 24 mounted on a back plate 30 which is offset above the guide 24 so that the offset portion forms one side of a tape-threading guide which is wider than the guide 24. A glass plate 34 in a door of a cabinet containing the apparatus, Fig. 3 (not shown), forms the other side of the tape-threading guide when the door is closed, also forming the front panels of the vacuum columns and carrying a trough (35) which guides the tape 15 past the head 17 and erase head 17a. Two further vacuum buffer columns 37, 38, tapered and asymmetrical as disclosed in Specification 1,386,149, are provided, together with air bearings 18 to 22, a solenoid-operated foot 48 which pushes the tape 15 away from the heads during fast rewind, and a tape-cleaner 41 comprising a blade 43 and a perforated plate 44 to which suction is applied, Fig. 4c. The guide 24 is curved to deflect the tape through a wrap angle greater than 20 degrees and is fed with lubricating air through a hole 47, Fig. 2. Tape threading is effected pneumatically as described in U.S.A. Specification 3,393,878.
Patent GB-261468-A (GB)
Title: A new or improved folding raft or catamaran
IPC: B63C9/04
Filed: 1925-08-18
Abstract: 261,468. Ford, A. Delo-. Aug. 18, 1925. Rafts.-Collapsable rafts comprise a central keel a to which are hinged or removably attached a pair of floats c, which, when the craft is out of action, lie against the keel, but which may be extended into a position at right angles to the keel where they are maintained by swivelling battens e which work about studs carried by the keel. The battens, when extended, may be retained by catches controlled by a spring. The raft may be provided with additional fore and aft floats.
Patent GB-1148745-A (GB)
Title: Phenyl-1,3,4-oxidazole derivatives, the manufacture and use thereof
IPC: C07D263/60
Filed: 1966-05-10
Abstract: 1,148,745. Phenyl - 1,3,4 - oxdiazole derivatives. CIBA Ltd. 10 May, 1966 [10 May, 1965], No. 20728/66. Heading C2C. [Also in Division C3] The invention comprises compounds of the formula wherein A, represents a 1,3,4-oxdiazolyl, phenyl, 2-benzoxazolyl or 2-naphthoxazolyl residue and B represents a residue (where A 2  stands for a 2-naphthoxazolyl or 2- benzoxazolyl residue and A 3  for a phenyl, 2- benzoxazolyl or 1,3,4-oxdiazolyl residue), and R represents a hydrogen atom or a monovalent, non-chromophoric substituent from the series: a halogen atom, or an alkyl, phenyl, carboxyl, sulpho, hydroxyl or amino group and substitutive or functional derivatives of the foregoing groups, and where terminal phenyl nuclei in the residue A 1 , A 2  or A 3  in the above formulµ may contain 1 or 2 substituents R and/or the phenylene nuclei of the formulµ may contain one such substituent R. Examples of substitutive and functional derivatives of the foregoing groups include halo-, hydroxy-, carboxy-, amino and phenyl-alkyl groups, alkyl-, halo-, alkoxy- and carboxyhydrazide groups and the analogous sulphonic acid derivatives; alkoxy, aralkoxy, phenoxy and hydroxy-alkoxy groups and amino groups which are alkylated, arylated or acylated. The compounds of the invention are obtained by reacting appropriate carboxylic acid halides with appropriate carboxylic hydrazides and cyclizing the products, e.g. by dropping in thionyl chloride at elevated temperature. The products may be converted to water soluble derivatives, e.g. by sulphonation or quaternation. Many specific products are described. Hydrazides employed as starting materials are prepared by reacting corresponding methyl or ethyl carboxylates with hydrazine hydrate. Carboxylic acid chlorides employed as starting materials are obtained by reacting corresponding carboxylic acids with thionyl chloride. The phenyl-1,3,4-oxidiazole derivatives are employed as optical brighteners (see Division C3).