baber/WOPTO huggingface dataset:
Patent GB-1301156-A (GB)
Title: Apparatus for measuring the attitute of a bore hole
IPC: E21B47/022
Filed: 1970-06-15
Abstract: 1301156 Measuring borehole attitude electrically SOC D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE 15 June 1970 [19 June 1969] 28811/70 Heading G1N Apparatus for determining the angle between the axis of a borehole and (a) the vertical, (b) a horizontal reference direction, comprises a rotating member coaxial with the borehole drilling line, producing spaced electrical pulses whose intervals represent the required angular values. As shown Fig.1, a motor 12 supported coaxially with a borehole drilling line 1, carries a yoke 5 defining a horizontal axis ZZ perpendicular to the borehole axis XX, from which is supported a pendulum 7 defining the vertical axis. The motor running at a constant speed drives a shaft 13 coupled to pinions 14, 15, 17 mounted on the three axes XX, ZZ and vertical respectively. The pinion 15 freely mounted on the yoke 5 carries a member 19 which co-operates with (a) a fixed member 21 maintained in the vertical axis by association with the pendulum 7, to produce a first pulse when they overlap, and (b) a fixed member 20 maintained by the yoke 5 in the XX axis, to produce a second pulse when they overlap, the interval between the pulse corresponding to the inclination of the XX axis from the vertical. The direction of the magnetic North, constituting the horizontal reference direction, is determined by a flux gate compass 16 comprising a slotted disc core 51 Fig. 5 symmetrically wound with an AC energizing coil 53 which saturates the core on each half cycle. A pick-up coil A is wound over a small angle of the core defining a diameter DA, and the core is driven with pinion 17. The double frequency signal in coil A is fed to a detector which produces a pulse when it passes through zero, indicating that diameter DA is perpendicular to the direction of the earth's magnetic field, and a perpendicular axis YY coincides with the magnetic North. The compass 16 also carries a member 23 which produces a pulse when it passes a fixed member 24 defining the XX axis, and the interval between these pulses corresponds to the horizontal angle between the XX axis and the magnetic North. A fifth pulse is obtained from a rotating member 26 and a fixed member 27 on the drilling line 1, defining the angular position of the motor shaft relative to the drilling line. The complete assembly is contained in a sealed section of the drilling line. Alternative means for producing a pulse defining the vertical comprises a conductive ball 190 (Figs 3, 4) running on two rails 192, 193 as the assembly is rotated in a vertical plane by pinion 15. Rail 192 is conductive and rail 193 is part conductive, part insulating, whereby the ball  190 opens and closes a circuit between the rails and one of these changes is arranged to occur when the assembly is at the lowest point, defining the vertical relative to the axis of pinion 15.
Patent GB-252991-A (GB)
Title: Apparatus for testing eggs
IPC: G01N33/08
Filed: 1925-11-16
Abstract: 252,991. Friebe, K. Nov. 16, 1925. Eggs, testing.-An egg-tester consists of a boxshaped casing a having top edges, a supporting- surface for the eggs and a bottom h all inclined as shown in Fig. 2. The supporting-surface comprises two side members b and a plate c having a longitudinal slot d through which passes the light from a cylindrical lamp e. The eggs roll down the plate c and collect in a chamber g which is preferably lined with dark cloth.
Patent GB-504295-A (GB)
Title: Improvements in or relating to a method of and apparatus for automatically conveying workpieces such as paper blocks and the like in a wire stitching machine
IPC: B42B4/00
Filed: 1937-10-22
Abstract: 504,295. Endless - chain conveyers. COLDITZ, L. Oct. 22, 1937, No. 28936. Convention date, Oct. 22, 1936. [Class 78 (i)] [Also in Group VII] Workpieces such as calendar blocks are fed singly from the bottom of a magazine 33 to a conveyer chain 14, which carries them to position beneath the stapling head 1. Here they are accurately located by front and side stops, and are halted during the stapling operation. They are then delivered to a rake ,30 which discharges them, in upright position, to a trough 32. The main shaft 3 drives the stapler shaft 2 and shafts 5, 6, and 19, the shaft 19 driving a shaft 4 through an articulated connection. A pusher 8 operated by a cam 9 on the shaft 5 moves the lowest workpiece in the magazine on to a conveyer chain 14, the remaining workpieces being supported by fingers 10-12. This workpiece is then engaged by one of a series of pushers 15 on the chain 14, the latter being driven by a' sprocket 26 on the shaft 6. The shaft 6 is driven by a slip clutch 35 on the shaft 3. When the workpiece reaches position beneath the head 1, the conveyer is arrested by the engagement of a finger 24 on a pivoted lever 22 with a toothed disc mounted on the shaft 6. Just before such engagement, a brake 28 is applied to the shaft 6 by means of a member 27 operated by a cam on the shaft 3. When the conveyer is arrested, the workpiece is positioned by a front stop 16 and a presser foot 17 operated by the shaft 4 and by a lateral stop 18 operated by the shaft 3. The shaft 4 with the mechanism operated thereby is adjustable for workpieces of different sizes. The sprocket 26 also is adjustable on the shaft 6. After stapling, the members 16-18 are removed, and the lever 22 is rocked, by a link 22b from the shaft 3, to release the shaft 6. The conveyer then resumes its travel to carry the workpiece to the rake 30. The head 1 may be arranged to drive more than one staple in sequence into a workpiece, or a multi-head machine may bo used.
Patent GB-1275901-A (GB)
Title: Improvements in seals for rotating machinery
Inventor: LOVESEY ALFRED CYRIL
IPC: F16J15/44
Filed: 1968-06-18
Abstract: 1275901 Seals ROLLS-ROYCE Ltd 18 June 1969 [18 June 1968] 28964/68 Heading F2B [Also in Division Fl] A seal, e.g. for use in a gas turbine engine comprises an annular array of elastically deflectable strip members 30 attached to a rotor or stator member, the fingers 30 having free ends in close proximity to the other said member. The fingers 30 may be mounted around a fixed ring 28 to co-operate sealingly with an annular axial extension 26 of a turbine disc (22), Fig. 2 (not shown). Leakage through the gaps 32 between the fingers 30 is prevented by a second series of fingers 34, offset from the first, and the free ends of the fingers 30, 34 may be coated with wear resistant material, e.g. tungsten carbide. Alternatively, Fig. 5 (not shown), the fingers 30, 34 may project axially of the stator to seal against an axially opposing rotor member. The fingers 30, 34, the rotary part 26, or both may include means defining annular peripheral flanges (not shown) to act as a labyrinth seal.
Patent GB-695304-A (GB)
Title: Improvements in heat regenerator filling material consisting of wire material
IPC: F02G1/057
Filed: 1947-04-29
Abstract: 695,304. Thermal regenerators. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 29, 1947 [Nov. 3, 1944], No. 28984/50. Divided out of 695,271. Class 64 (i) A cylindrical coil forming the filling of a thermal regenerator is wound from a length of wire portions of which have been deformed into a series of flattened portions each extending along the longitudinal axis of the wire and each oriented at an angle about that axis relatively to an immediately adjacent flattened portion. In the form shown, adjacent flattened portions are at right angles to one another. The lengths of flattened portions vary along the wire. The latter may have portions which are not deformed. Dimensions are given.
Patent GB-486004-A (GB)
Title: Improvements in wall plugs for nails or screws
IPC: F16B13/12
Filed: 1936-10-24
Abstract: 486,004. Wall plugs. JORDAN, E., and GASTREICH, J. Oct. 24, 1936, No. 28987. [Class 89 (i)] A wall plug comprises a tubular sleeve which has a smooth bore band which is slit over part of its length to provide three or more prongs c on which are formed ribs or threads d extending across the width of the prongs, the ribs or threads, which are of an external diameter equal to or less than that of the unslit portion a, being spaced apart a distance greater than their thickness by portions of uniform thickness, and the prongs c being inclined towards one another at their free ends. The ribs or threads d may be annular or helical, may be steeper on the side nearer the free ends of the prongs and may increase in height from one edge of the prong to the other. A screw-driver slot e may be provided.
Patent GB-1139748-A (GB)
Title: Colour kinescopes
IPC: H01J29/07
Filed: 1966-06-28
Abstract: 1,139,748. Colour television tubes. RADIO CORPORATION OF AMERICA. 28 June, 1966 [16 July, 1965], No. 29057/66. Heading H1D. The shadow mask of a colour cathode ray tube is supported from the envelope by a flexible mounting arrangement, including a leaf spring positively connected to both the envelope and the mask electrode, such that as the shadow mask expands outwardly on being heated by electron bombardment it is caused to move towards the screen sufficiently to maintain substantial alignment of the apertures in the mask electrode with the elemental phosphor areas of the screen. In one form, Figs. 3, 4, the mounting arrangement comprises an L-shaped leaf-spring 19 which has short leg 19a welded to side 12a of the shadow mask support 12 and a hole 19d in leg 19b pivotably engaging a stud 17 of the envelope 9. Portion 19a of the leafspring, at least, is formed of bi-metallic strip which when heated curls in the direction of arrow 27, (Fig. 3); this causes the hole 19d to move in the direction of arrow 29 which, because of reaction with stud 17, causes the mask electrode to move in the opposite direction towards the screen face. In a modification, Figs. 10, 11 (not shown), the leaf spring is pivotably secured to both the envelope and mask and one end of a separate bi-metallic strip is secured to the mask support and the other end secured to the edge of the leaf spring. In this modification the bi-metallic strip may be replaced by a wedge welded to the flange with an oblique face abutting the edge of the leaf spring, Figs. 12, 13 (not shown). Alternatively, Fig. 16, the leaf spring may comprise a bi-metallic strip 21 with an expansion loop 21c which bows in the direction of arrow 27 when heated, and which, as before, causes a reaction at stud 17 which moves the mask towards the screen. In a further embodiment, Fig. 8, the resilience of the leaf spring itself provides the force that moves the mask towards the screen. The leaf spring comprises two substantially parallel end portions 41a, 41b, affixed to the mask and envelope respectively, which are interconnected by an oblique portion 41d disposed at an acute angle to both parallel portions. Four mounting arrangements, one at the midpoint of each side of the screen, are generally employed, however, three mountings may be used-one at the mid point of a long side and the other two an opposite short sides three-quarters of the way towards the other long side. When only three are used the lower two mountings are of the type described with reference to Fig. 8, modified in that the whole of the leaf spring is set at an angle to the plane of the shadow mask, Fig. 15 (not shown), to compensate for unequal movements in the plane of the shadow mask. Reference has been directed by the Comptroller to Specification 811,936.
Patent GB-732571-A (GB)
Title: Improvements in or relating to hydraulically powered aircraft control system
IPC: B64C13/00
Filed: 1952-11-18
Abstract: 732,571. Fluid-pressure servomotor-control systems. NORTHROP AIRCRAFT, Inc. Nov. 18, 1952 [Nov. 19, 1951], No. 29095/52. Class 135. [Also in Group XXXIII] A hydraulic aircraft control system for preventing control surface flutter due to airframe flexure comprises a control surface 21 pivoted on the airframe, a hydraulic cylinder 25 connected at one end to move with the surface and having its piston-rod 27 connected, e.g. directly or through a lever system, with a shaft 17 mounted, e.g. directly or by a lever, on the airframe, a control quadrant 19 rotatable coaxially about the shaft, and a valve housing 30, mounted on and moving with the cylinder, having a valve 31 controlling fluid supply to the cylinder and connected by a rod 32 to the quadrant. When shaft 17 is moved due to reaction between cylinder and piston producing airframe flexure, the valve is correspondingly moved to reduce oscillation. In another embodiment where it is not practical to use one shaft 17, the piston-rod is pivotally connected to a lever pivotally mounted at one end on the airframe and having its other end positioned between two opposed pre-loaded springs, the valve-operating quadrant is mounted on another lever also pivoted on the airframe and an adjustable link interconnects the levers so that movement of piston and first lever also moves the quadrant lever and valve.
Patent GB-699583-A (GB)
Title: Manufacture of substituted thiouracils
Inventor: LACEY RICHARD NORMAN
Filed: 1950-11-29
Abstract: The invention comprises 1 : 3 - diethyl - 4 - methyl -, 3 : 4 - dimethyl - and 1 - phenyl - 3 : 4 - dimethyl - thiouracil, and the manufacture of these and other substituted thiouracils of the general formula <FORM:0699583/IV (b)/1> (wherein R1 and R2 represent hydrogen or alkyl, cycloalkyl, aralkyl or aryl radicals, at least one representing hydrogen or an alkyl radical) by reacting diketene with a compound of the formula R1HN - CS - NHR2.  The reaction is preferably carried out in the presence of a diluent medium (e.g. an organic solvent such as glacial acetic acid, an alcohol, an ether, an ester, a ketone, an aromatic hydrocarbon or a chlorinated hydrocarbon), and may take place at temperatures in the range 40-200 DEG  C. (preferably about 100 DEG  C.), the diluent being advantageously chosen so that it boils at the appropriate temperature and thus dissipates the heat of reaction.  The thiourea starting materials may be used in the form of their salts (e.g. hydrohalides) with the addition of alkaline material to liberate the base.  When the thiourea starting material is unsymmetrical, the product is a mixture of isomers, of which one may predominate.  The products can be hydrolysed to the corresponding uracils, e.g. by heating with concentrated hydrochloric acid at about 160 DEG  C.  In examples (1) diketene is refluxed with thiourea in glacial acetic acid to produce 4 - methylthiouracil; (2) 1 : 3 - di - ethylthiourea similarly yields 1 : 3-diethyl-4-methylthiouracil; (3) phenylthiourea similarly gives 1-phenyl-4-methylthiouracil, which is separated by crystallization from small amounts of the 3-phenyl compound; (4) and (5) the solvent in (2) is replaced by dioxane, benzene, chloroform or ethyl acetate; (6) methylthiourea is reacted as in (1) to form 3 : 4-dimethylthiouracil, which on hydrolysis yields 3 : 4-di-methyluracil; (7) N-phenyl-N1-methylthiourea similarly gives 1-phenyl-3 : 4-dimethylthiouracil.  Other starting materials specified are ethyl-, N : N1-dimethyl-, N-methyl-N1-ethyl-, N - ethyl - N1 - phenyl -, cyclohexyl -, N - methyl-N1-cyclohexyl- and benzyl-thiourea.
Patent GB-645601-A (GB)
Title: Purification of aqueous solutions of formaldehyde
IPC: C07C45/85
Filed: 1948-11-10
Abstract: Aqueous solutions of formaldehyde are purified and concentrated by reacting with methyl alcohol to form methylal which is distilled off, hydrolysed, and formaldehyde recovered from the product. Formaldehyde solutions obtained by absorption in water of the products of partial air oxidation of propane, butane, and other hydrocarbons may be treated.  2-10 moles. of methyl alcohol for each mole. of formaldehyde may be added, using 1-15 moles. per cent on the formaldehyde of sulphuric or hydrochloric acid as catalyst, and a temperature of 70-100 DEG  C.  A mixture of methylal, methyl alcohol, and methyl formate, due to formic acid present, is distilled over to a column where the alcohol is recycled and the overhead passed to a saponification column where caustic soda is introduced to convert methyl formate to sodium formate removed as bottoms, and methyl alcohol which distils over with water and methylal.  The distillate passes up a hydrolysis column containing phosphoric acid, potassium acid phosphate on pumice or silica gel or phosphoric acid on inactivated alumina, preferably pumice with 10-50 per cent by weight aqueous phosphoric acid.  Hydrolysis is effected at 100-300 DEG , preferably 150-200 DEG  C., with a space velocity of the vapours of 5-50 vols./vol. catalyst/min., at N.T.P., and using 2-10 moles. of water for each mole of methylal. The products pass to a column from the lower part of which formaldehyde is taken off, while water, alcohol and methylal leave overhead and are recycled to the first column.
Patent GB-716336-A (GB)
Title: Improvements in and relating to the bonding of rubber to viscose rayon yarns
Inventor: TALLIS ERNEST EDWARD
IPC: C08L1/06
Filed: 1951-12-14
Abstract: In the production of viscose rayon yarns having an improved adhesion to rubber, a main viscose stream is delivered to a spinning machine comprising a number of jets immersed in an aqueous coagulating bath and supplied with individual viscose streams branching off from the main stream, and there is injected into the main stream, just before it reaches the spinning machine, an aqueous caustic soda solution of an incompletely condensed heat-hardenable resorcinol-formaldehyde resin having a resorcinol/formaldehyde molar ratio of 1:1:3-3.5 and a resorcinol/caustic soda molar ratio of 1:1.0-3.5.  The resin content of the solution is preferably 5-15 per cent. by weight and that of the finished yarn 0.5-3 per cent. by weight based on the dry weight of the yarn.  When the injector unit and/or the feed pipes associated therewith are made of iron or of a ferrous alloy subject to corrosion in contact with viscose, the resorcinol/caustic soda molar ratio should be 1:1.5-3.5, to prevent gelling of the viscose-resin solution mixture.  In an example, resorcinol is dissolved in an aqueous solution of sodium hydroxide and a 37 per cent. aqueous solution of formaldehyde is added (with cooling) to give a solution containing 9 per cent. of resorcinol, 3.68 of formaldehyde, and 6.56 of sodium hydroxide. After standing for 8 hours at 20 DEG C. the solution is injected as described in Specification 290,693, [Class 15 (ii)], into a stream of a mature viscose containing 7.4 per cent. cellulose and 6.5 sodium hydroxide as it is being delivered to a spinning machine, and the mixture is extruded to form threads, which are then stretched as described in Specification 467,500.  The yarn is washed free from acid but not given an alkaline desulphurizing treatment.  The injection ratio of resin solution to viscose is 1:99, giving about 1.5 per cent. resin on the dry weight of the yarn.  The yarn is more flexible than yarn treated with similar resinous compositions after it has been spun.  Specifications 477,380 and 582,210 also are referred to.
Patent GB-392602-A (GB)
Title: Improvements in apparatus for testing the balance of rotary bodies
IPC: G01M1/04
Filed: 1931-10-22
Abstract: 392,602. Testing balance of rotary apparatus. YOUNGMAN, R. T., Walcot, Church Crookham, Hampshire. Oct. 22, 1931, No. 29321. [Class 106 (ii).] Apparatus for testing more particularly air-screws comprises a fixed frame, a pair of horizontally spaced supports upon which the axis of the screw is mounted wherein one at least of the supports is swing- ingly suspended by a filar or like member from a fixed anchorage on the frame. One end of a spindle 6 is journalled in the frame 1 in a self-aligning bearing 16 while the other end is journalled in a bearing 13 supported by filar suspensions 2, 3 passing through clamps 4, 5, turnbuckles 14 providing means for adjusting the tension. The axle 6 is rotated from a handle 18 or small electric motor by a flexible drive 17. The airscrew under test is supported on the spindle 6 and is centred by conical elements 7 provided with lock nuts 8. A centre 15<x> displaceable in the frame 1 is adjusted to engage a recess in the end of the spindle. The device for measuring and correcting the balance comprises a member 11 which can be adjusted axially on a screwed part of the spindle and secured by lock nuts 12 and masses 10, 10<x> of which the mass 10<x> is adjustable axially. The bearing 13 may be provided with arms carrying additional masses in order to vary the free period of oscillation of the apparatus. In use, the propeller is mounted as shown and the centre 15<x> withdrawn. The spindle 6 is rotated up to resonance speed and the vibration noted. The shaft is then allowed to come to rest and the mass 10<x> adjusted. By a process of successive trials the vibrations disappear and the lack of balance is compensated. The movement of the weight 10<x> from " zero on its scale is a measure of the lack of balance. The suspensions 2, 3 may be clamped at 4, 5 when a quicker period of vibration is desired. A rigid bar articulated at each end may be substituted for the filar member.
Patent GB-1535488-A (GB)
Title: Terrain clearance warning system for aircraft
IPC: G01S13/935
Filed: 1977-07-13
Abstract: 1535488 Ground proximity warning systems SUNDSTRAND DATA CONTROL Inc 13 July 1977 [19 July 1976] 29349/77 Heading B7W A terrain clearance warning system for an aircraft comprises signal sources respectively representing the aircraft's altitude above the terrain, the position of the aircraft's landing gear or flaps and aircraft speed and a computer comprising elements 48-56, 60 to 64 and 68 to 96 responsive to these signals for generating a voice warning when the aircraft is below a first predetermined altitude and for generating a further voice warning when the landing gear is up below a predetermined speed. Voice warnings are also given when the aircraft has descended below a second threshold altitude and the aircraft is above the predetermined speed and when the aircraft is below a predetermined speed with the flaps not in a landing position.
Patent GB-538558-A (GB)
Title: Improvements in or relating to holding devices for or containing anti-condensation preparations for application to the visors or eyepieces of gas masks or respirators
IPC: A62B25/00
Filed: 1939-11-04
Abstract: 538,558. Gas mask accessories. BARCROFT, W. Nov. 4, 1939, No. 29378. Addition to 537,369. [Class 18] The invention of the parent Specification is modified in that, in the form shown in Fig. 1 the anti-dimming composition a<SP>5</SP> is fixed within a rim in the lid. In Fig. 2 a rubber holder d<SP>2</SP> is held by a rubber patch sewn or stuck to the container, the anti-condensation substance being contained within a plug d<SP>4</SP>. Further devices secured by a " patch " is shown in Fig. 5. In the device shown in Fig. 6 the base f<SP>1</SP> is secured to the absorbent materials chamber of the mask by a rubber band, the lid f' containing the anti-dimming substance. In an alternative form the container may be held by hooks secured to a piece of rubber s engaging holes in the metalfilter container. Another form is shown in Fig. 12.
Patent GB-715067-A (GB)
Title: Improvements in and/or relating to a process for preparing n-2-(4 -chloro-2 -sulfophenoxy)-5-chlorophenyl-n-3, 4-dichlorophenylcarbamide
IPC: C07C309/42
Filed: 1951-12-17
Abstract: A process for preparing salts of N-21-(411-chloro - 211 - sulphophenoxy) - 51 - chlorophenyl-N1 - 3,4 - dichlorophenylcarbamide is characterized by the fact that a salt of 2-amino-4,41-dichloro - 1,11 - diphenyl - ether - 21 - sulphonic acid is condensed with 3,4-dichlorophenylisocyanate in anhydrous acetonitrile.  The 2-amino - 4,41 - dichloro - 1,11 - diphenyl ether-21-sulphonic acid may also contain some 21-4-dichloro isomer (in consequence of preparing it by the condensation of p-chlorophenol containing some o-chlorophenol with p-dichloronitrobenzene and subsequent reduction and sulphonation).  This impurity crystallizes out from the acetonitrile and can be removed before the condensation.  An example illustrates the process.  Specification 536,047 is referred to.