baber/WOPTO huggingface dataset:
Patent GB-1292205-A (GB)
Title: Apparatus for rotating the plane of polarization of a linearly polarized radiation
IPC: G02B5/30
Filed: 1970-01-30
Abstract: 1292205 Polarizing apparatus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 30 Jan 1970 [3 Feb 1969] 4632/70 Addition to 1245760 Heading G2J [Also in Division H4] Relates to apparatus for converting linear polarized light having an arbitrary plane of polarization into linearly polarized light having a plane of polarization which rotates at a substantially constant angular velocity, the apparatus including a series of birefrigent elements at least one being an electro-optic crystal. In a first embodiment, Fig.1, plane polarized light passes through semi-transparent mirror 4 and the series arrangement of electro-optic crystals 5 and 8 exhibit the Pockels effect and is then reflected byaretrodirective element 11 e.g. a plane mirror or a "cat's eye" (lens and a plane or concave mirror), back through the electro-optic crystals being reflected by the mirror 4 to a photo-electric detection system 12. The principal directions of crystals 5 and 8 (indicated by arrows 6 and 9) are at 45 degrees to each other, and an alternating voltage V 1  = Vsin wt. is applied to crystal 5 and an alternating voltage V 2  = V'cos wt. is applied to crystal 8, the peak voltage amplitudes V and V' being such as to result in quarter wavelength phase differences. This apparatus is equivalent to the apparatus shown in Fig. 1 in the parent Specification, and apparatus referred to which includes (2n-1) crystals may be replaced by apparatus which includes n crystals followed by a retrodirective element according to the present invention. An apparatus equivalent to that of Fig. 4 (not shown) of the parent Specification is described with reference to Fig.2 (not shown).
Patent GB-265016-A (GB)
Title: Improvements in thermostatic valves
IPC: G05D23/12
Filed: 1926-02-18
Abstract: 265,016. Jackson Boilers, Ltd., and Mustill, C. W. Feb. 18, 1926. Thermostats.-A gas valve for controlling the temperature of a hot water urn &c. is operated by a thermostatic capsule in contact with the urn side the valve being pressed against the capsule by an adjustable spring. A disc valve 15 is normally urged away from its seat 11 by a spring 17 encircling a sleeve portion 16 of the valve, which is guided bv a spigot 14 integral with an adjusting screw 13. Expansion of a capsule 18 in contact with the urn side 6 presses the valve towards its seat to cut off a gas passage between concentric chambers 9, 10, respectively in communication with the gas inlet and outlet 7, 8. A by-pass aperture in the wall separating the chambers is controllable bv the coned end of a screw member carried by the outer wall of the casing.
Patent GB-676949-A (GB)
Title: A quick release unit for chain type lashings
IPC: B66C1/42
Filed: 1951-02-26
Abstract: 676,949. Chain strainers. BLACKBURN & GENERAL AIRCRAFT, Ltd., CRABBS. W. A., and DAVIS, I. J. Feb. 26, 1951, No. 4677/51. Class 45 [Also in Group XXV] A chain strainer shown in longitudinal section comprises end-members 1, 26 connected by a turnbuckle and carrying jaws 8, 30 adapted to .grip the chain at one end and an anchor ring or bar at the other. The jaws are closed 'by rotatable sleeves 14, 33 having internal cam surfaces. The members 1, 26 are formed with internally threaded extensions 21, 25 for the reception of oppositely threaded studs 22, 24 rotatable by a sleeve 23. In use, the strainer is attached to an anchoring ring or bar by the jaws 30, the chain is then threaded through a slot 3 in an extension 2 of the member 1 and passes out through an opening 4. When the chain has been pulled tight by hand, the jaws 8, which are shaped to grip a link, are closed and the sleeve 23 is turned to tension the chain.
Patent GB-778042-A (GB)
Title: Improvements in or relating to processes and materials for effecting adhesion
Inventor: RAYNER CLAUDE ALBERT ABBS
IPC: C08L77/00
Filed: 1954-02-25
Abstract: 778,042. Laminates. AERO RESEARCH, Ltd. Feb. 16, 1955 [Feb. 24, 1954], No. 4697/55. Divided out of 778,041. Class 140. Materials such as metal foil or sheet, glass, porcelain, or hard thermoset resins are united by applying to one or both of the surfaces to be joined a composition containing a synthetic linear polyamide and a thermosetting phenolaldehyde resin, pressing the surfaces together at a temperature above the melting point of the polyamide, and allowing to cool to below the melting point of the polyamide while still under pressure. The polyamide and the resin may be dissolved in a common solvent, or finely divided polyamide may be dispersed in a solution of phenol-aldehyde resin or dusted on a tacky coating of phenol-aldehyde resin syrup or solution. The polyamide may be polyhexamethylene adipamide or sebacamide, a caprolactam-type polymer or alcohol-soluble nylon. The resin may be obtained by the condensation of formaldehyde with phenol, diphenylol propane, cresols, resorcinol, or of phenol with hexamethylene tetramine or furfural. Examples describe the joining of aluminium or aluminium alloy test pieces to one another, and of copper foil to a number of superposed layers of paper coated with a thermosetting phenol-formaldehyde resin, all the layers being united by a single hot-pressing operation. Specifications 461,236, 461,237, 495,790, 535,421, [all in Group IV], and 589,949 also are referred to.
Patent GB-1027302-A (GB)
Title: Improvements in or relating to apparatus for annealing flat glass
Inventor: BEATTIE JOHN REGINALD
IPC: C03B25/08
Filed: 1962-02-07
Abstract: <PICT:1027302/C1/1> An annealing lehr for annealing glass advanced therethrough includes, at least in the annealing zone, multiple assemblies each consisting of a series of heat reflecting partitions assembled in spaced relation so that the heat exchange between the partitions is mainly by radiation to give desired thermal insulation at the upper end of the annealing range so that the glass is cooled slowly through the annealing range.  Glass ribbon 2 drawn between rollers 4 is passed into an annealing lehr 1 on rollers 3 and initially will be at a temperature above the temperature of the annealing range.  Each wall of the lehr 1 includes multiple wall assemblies 7, 8 consisting of parallel heat reflecting partitions 9 to 12 and 13 to 16 held in spaced relation by refractory spacers 17 carried by rigid frames 18, 19 mechanically secured to the refractory walls of the lehr.  The sheets 9 to 12 are respectively of a heat resisting steel, a stainless steel and two of aluminium and the sheets 13 to 16, two of stainless steel and two of aluminium, each assembly 7, 8 acting to reduce the heat loss when the temperature of the glass 2 is near the top of the annealing range.  Auxiliary heating means 20 may also slow down the rate of heat loss.  The assemblies 7 and 8 may be positioned inside the walls of the lehr instead of forming part of the walls.  Special arrangements of the partitions 9 to 12 and 13 to 16 may effect differential cooling between the centre portion and the marginal portions of the glass ribbon 2.
Patent GB-415098-A (GB)
Title: Improvements in starters for internal combustion engines
IPC: F02N15/02
Filed: 1933-02-16
Abstract: 415,098. Turning - gear. TAYLOR, G. A., 164, Dana Avenue, Hyde Park, Massachusetts, U.S.A. Feb. 16, 1933, No. 4779. [Class 7 (v).] In an engine starter in which a pinion 18 is moved axially into mesh with an engine gear 29 by a screw thread or a pin and helical slot, torque is transmitted to the pinion, after meshing has taken place, by a friction clutch 14 located within the pinion ; the clutch is normally lightly engaged and is tightened progressively by the compression of a spring 10 in a direction enforcing meshing of the pinion. In one form, a screw 4 slides on keyways 5 on the shaft 2 of the starting motor and engages a screw-threaded sleeve 11 integral with a cone-clutch member 14 in engagement with a clutch face in the starter pinion 17. The spring 10 is interposed between the screw 4 and a collar 9 fixed to the end of the shaft 2. The pinion is normally disengaged from the ring gear 29 on the engine flywheel by a light spring 22 between the pinion and a collar 19 abutting against a shoulder 3 on the shaft 2. Rotation of the shaft 2 and screw 4 advances the sleeve 11 and pinion 17 until the pinion meshes with the gear 29 and abuts against the collar 19. The screw 4 then advances to the right, compressing the spring 10 and loading the clutch 14, until stopped by a split ring 27 in the end of the sleeve 11. The load on the clutch is insufficient to withstand a backfire or other abnormal condition. When the engine starts, the return of the screw 4 is assisted by the spring 10 and jamming of the screw in the keyways 5 is prevented by a pin 28. Any tendency of the screw 4 to wedge in the threads of the sleeve 11 is prevented by a pin 25 in the sleeve engaging a wedge-shaped recess in the end of the screw. In a modification, a member corresponding to the screw 4 is provided with pins engaging helical slots in the sleeve 11, the axial movement of the member in the sleeve being limited by an external ring on the end of the sleeve. In another modification, the screw 4 is replaced by a nut engaging threads on the shaft 2 and keyways in the sleeve 11. The cone clutch 14 may be replaced by a single-disc or multipledisc friction clutch.
Patent GB-588526-A (GB)
Title: Improvements in or relating to tunable wave-guide detectors
IPC: H01P7/06
Filed: 1945-02-26
Abstract: 588,526. Wave guides. TOMLIN, D. H., and WRIGHT, C. S. Feb. 26, 1945, No. 4825. [Class 40 (v)] A wave guide detector comprises a probe 4 projecting into a rectangular guide so as to pick up H10 waves and extending axially through one flat end 3 of a cylindrical resonant cavity 2, the other end of which is formed by a circular tuning piston 6, the detector 9 being coupled with a second probe 10 carried by the piston. The lower part of the structure straddles the wave guide, which occupies the space 1 and rides on spring-loaded ball bearings B. The guide is longitudinally slotted to receive the rectangular projection 5 through which the probe 4 passes. The piston 6 makes spring contact with the wall of the cylinder 2 by means of dimpled teeth on a beryllium copper ring 11 soldered to the piston, which is adjusted by a nut 8 co-operating with a screwed stem 7. The detector 9 is carried in a brass tube 12 which is adjustable by sliding within the hollow stem 7, the crystal pin 13 entering a cup 14 attached to the probe 10 and to a brass strip 15 soldered to the tube 12. Rectified current is taken off by a screened lead 16, the inner being attached to a brass disc 18, Fig. 5, and the outer to a disc 17 with mica disc 19 interposed. The lower disc 18 is pressed on the head of the crystal detector 9 by a screwed member 21 which is threaded into the tube 12 and is bored axially to accommodate the screened lead 16. The crystal head is insulted from the tube 12 by an ebonite washer 20. The high-frequency circuit for the crystal includes the capacity between the discs 17, 18 ; and the circuit for the rectified current is completed through the screened lead 16 and back through the tube 12 and strip 15. The length of the cylinder 2 may be adjusted by the piston to any multiple of half the wavelength. The detector is intended for use in measuring impedance, wave-length, or loss in the guide.
Patent GB-1532193-A (GB)
Title: Radial shaft seal
IPC: F16J15/3272
Filed: 1977-02-07
Abstract: 1532193 Seals GOETZEWERKE FRIEDRICH GOETZE AG 7 Feb 1977 [10 Feb 1976] 04934/77 Heading F2B A built-up seal assembly between a split stepped diameter housing D, D<1>, e.g. in an engine crankshaft housing, and an engine crankshaft, comprises an elastomeric outer ring 1 in which is vulcanized a reinforcing ring 2 having a radially inwardly extending end 3 which forms a stop for a double-lip type seal 4 which is pressed into the outer ring 1. The arrangement ensures that the split stepped diameter crankshaft housing is sealed by the correspondingly formed outer ring 1 which accordingly may be made of low grade elastomeric material, whilst the double-lip seal 4 is of high grade rubber material and precision finish to ensure good sealing engagement with the crankshaft. The outer ring 1 extends radially inward at 11 to radially guide the sealing lip 13, the portion 11 enclosing the sealing lip 13 concentrically over a small gap to permit the sealing lip 13 to follow relatively small radial vibratory movements of the crankshaft.
Patent GB-1235644-A (GB)
Title: Improvements in or relating to valves
IPC: F16K5/16
Filed: 1970-02-02
Abstract: 1,235,644. Valves. XOMOX CORP. 2 Feb., 1970, No. 4965/70. Heading F2V. In a rotary plug valve wherein the plug 26 is accommodated within a chamber 22 into which open aligned valve inlet and outlet passages (14, 16, Fig. 1, not shown), sealing of the plug with respect to the valve fluid transfer passages is effected by means of a plastics material sleeve 24 which is suitably apertured and is inhibited from either axial or rotational movement, and by means of a high viscosity fluid 66 which precludes leakage of the controlled fluid into or past it. Fluid 66 is contained within a space defined by a wall portion 74 of this chamber 22, by the terminal portion of the sleeve 24, by the portion of the plug adjacent to its actuating stem 42, and by a diaphragm 62, the space being in communication with a reservoir 68 closed at one end by a screw plug 70, and the diaphragm, which is strengthened by a metallic disc 60, being clamped between, on the one hand, the chamber body and a cap 32 attached to the chamber by bolts 34, and on the other hand, between a seat 62 on the plug 26 and a pressure ring 54, the pressure ring surrounding the plug stem 42 and being subjected to the inwardly directed force of adjusting screws 38. In modifications, Figs. 3-10 (not shown), the sleeve may be additionally provided with an annular groove adjacent that end of the sleeve which is disposed innermost within the chamber 22 such groove being supplied with the sealant fluid via a connecting channel extending longitudinally along the sleeve. Furthermore, the sleeve may be so formed that the sealant fluid 66 is also present in the longitudinal space between the sleeve and chamber wall. Still further, the diaphragm may be clamped at its innermost periphery by stem-packing plugs.
Patent GB-216559-A (GB)
Title: Improvements in methods of and apparatus for compressing elastic fluids
IPC: F04F5/22
Filed: 1923-02-20
Abstract: 216,559. White, A. E., (Wheeler Manufacturing Co., C. H.). Feb. 20, 1923. Aspirating - apparatus, ejector; regulating or controlling action.-The rate of delivery of induced gas varies with the pressure of the inducing fluid (typically steam) in the manner shown in Fig. 1, in which the curves A, B, and C indicate this relationship for successively lower inducing-fluid pressures. respectively. In order to produce the most favourable rate of delivery, means are provided in the supply passage of the inducing fluid to vary the inducing-pressure in a predetermined manner. The invention is shown applied to both stages of a two-stage ejector in which the inducing-fluid supply passages 3, 14, feeding the two stages respectively, each divide into three passages 4 - - 6 and 15 - - 17 all provided with shutoff valves 7. The passages 6 and 17 are unrestricted throughout their length, but, in the other passages, plates 12, Fig. 3, having differently-sized orifices 10 are inserted, so that by the action of the operator in opening one of the valves 7 in each stage and shutting off the remainder, selected predetermined pressures may be given to the inducing fluid on its way to the nozzles N, thus providing that the operating characteristic of that stage may successively approximate to the outlines of the curves A, B and C. The inventdon may be applied to the construction of ejector described in Specification 114,131.
Patent GB-881638-A (GB)
Title: Machine for the manufacture of thermo-plastic tubes
Inventor: SPIES RICHARD
IPC: B29C65/02
Filed: 1960-02-12
Abstract: 881,638. Non-metallic tubes. RHENOPACK G.m.b.H. Feb. 12, 1960, No. 5003/60. Class 99(2). A machine for preparing, for subsequent heat sealing, from an elongated band of flexible thermoplastic sheet material, a tube 15 wherein the longitudinal edges 16, 17 of the band overlap each other, comprises at least two arcuate members 1, 2 having coinciding axes X coincident with the axis of the tube and spaced apart from each other axially, each member being open on the top thereof, and guide means 4 engaging the members and having a portion protruding into the members and defining two oppositely disposed overlapping recesses 11, 12, each adapted to receive and to guide a longitudinal edge of the tube.
Patent GB-248908-A (GB)
Title: Improvements in the manufacture of twist-lace on twist-lace curtain machines
IPC: D04C5/02
Filed: 1925-02-24
Abstract: 248,908. Goodley, C. Feb. 24, 1925. Lace.-To make square or filet net J on a curtain machine provided with one set of spool threads A controlled by a single bar B at the same time as open and patterned work K and combination effects L the bar B moves one gait to the left when the carriages H are in the back combs E, then rests for a moment and moves two more gaits to the left. It moves similarly to the right when the carriages are in the front combs F. The warp bar D moves two gaits to the left, rests and moves one gait back while the carriages are in the back combs and moves two gaits to the right, rests and moves one gait back while the carriages are in the front combs. The jacks G can take up the two operative positions shown in full and dotted lines respectively. In the former case open and patterned work can be produced by working the jacks in an ordinary way while a square or filet net or ground can be produced simultaneously in another part of the curtain by working the respective jacks as described in Specification 224,773. By moving alternate jacks G in to intercept both spool and warp threads combination effects L are obtained.
Patent GB-693098-A (GB)
Title: Rotary cultivator for coupling to agricultural tractors
IPC: A01B33/02
Filed: 1952-02-27
Abstract: 693,098. Rotary cultivators. FEY, J. Feb. 27, 1952 [March 19, 1951], No. 5212/52. Class 6(i) Rotary cultivators 2 are mounted across the end of a floating tubular arm 1. The power take-off shaft of a tractor drives a shaft 3 within the tube 1 through a telescopic shaft 12 universally jointed at each end, and the forked upper end 4 of the tube 1 is pivoted to arms 5 carried by a turntable, the supporting bracket of which is secured at varying points on a crossbar 32 at the back of the tractor. A supporting wheel 18 running at the rear of the cutters 2 determines the cutting depth and is attached to an arm 19 pivoted in a bracket 21. The other end of the arm i. adjusted by a hand-wheel 24 adjacent to the tractor driver and having a screwed stem working in a nut 23 pivoted on the arm 19. The position of the handle may be raised by adjusting the hub 26a of the bracket 26. The wheel is thin enough to penetrate to the full depth of the cultivated soil which collapses after the passage of the wheel, thus obliterating any track. Screens 29 and gratings 30 are provided over and in advance of the cutters.
Patent GB-923211-A (GB)
Title: The casting of plutonium
IPC: G21G4/02
Filed: 1961-02-13
Abstract: 923,211. Nuclear fuel. UNITED STATES ATOMIC ENERGY COMMISSION. Feb. 13, 1961 [March 31, 1960], No. 5247/61. Class 39 (4). A casting suitable for nuclear fuel consists essentially of plutonium and iron and contains from 500 to 1500 parts per million of iron. The casting is free from microcracks and has greater strength and higher ductility at elevated temperature than castings containing less iron. It is believed that a network of the Pu-Pu 6 Fe eutectic is formed. Reference has been directed by the Comptroller to Specification 860,161.
Patent GB-1014252-A (GB)
Title: Fluorinated organic compounds
IPC: C07C17/26
Filed: 1962-02-12
Abstract: A process for making hexafluorobenzene comprises pyrolysing a substituted methane having the general Formula CHFXY wherein X represents chlorine, bromine or iodine and Y represents bromine or iodine and X and Y may be the same or different from one another e.g. dibromofluoromethane. Preferably the process carried out in the presence of an inert gas or nitrogen and in the presence of a metallic halogen acceptor. Several examples are given.
Patent GB-992222-A (GB)
Title: Hypoglycemic compositions containing acyl disulphides and their esters
IPC: A61K31/19
Filed: 1964-02-07
Abstract: Hypoglycemic agents for oral administration comprise an inert carrier with 1,11-dicarboxymethyldisulphide or its C1-C4 alkyl esters: <FORM:0992222/A5-A6/1> wherein R1 and R2 are hydrogen or C1-C4 alkyl groups.  The compounds may be administered singly, or in compositions containing a plurality of these compounds.
Patent GB-621660-A (GB)
Title: Improvements in or relating to electronic timing control apparatus
IPC: B23K11/24
Filed: 1947-02-25
Abstract: 621,660. Switching systems for resistance welding and the like. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 25, 1947, No. 5433. Convention date, Jan. 18, 1946. [Class 38 (iv)] Timing apparatus, particularly for allowing energization of a resistance welding transformer 7 for a predetermined and adjustable number of cycles from a supply 13 through back-toback discharge devices 1, 3, comprises a starting valve 49 in series with a resistor 53 which controls the ignition of the leading discharge device 1 and which is shunted by a " stopping " valve 109. The last is normally maintained non-conducting by grid bias 117, but is rendered conducting to terminate ignition of discharge device 1 by a voltage which opposes the bias and which builds up on a timing condenser 61 over a rectifier 57 and adjustable resistor 59 when the starting valve is conducting. Valve 49, which is energized from a transformer 45, is normally held off by a grid voltage in phase opposition to its anode voltage, but upon closure of an initiating switch 123, a relay 77 connects a condenser 73 to the grid excitation winding of the transformer, shifting the phase of the grid voltage about 30 degrees and allowing the valve to conduct. The relay also disconnects a discharge resistor 125 from condenser 61 which then changes over the valve 49. Valve 109 is eventually fixed to short-circuit resistor 53 (which has previously been carrying most of the current passed by 4a) when (a) condenser 61 reaches a voltage approaching that of the bias 117 and (b) a hold-off A.C. voltage applied to a second grid 119 from transformer 45 passes through zero. The control voltages for the ignition grid of discharge device 1 comprise(1) an A.C. hold-off component derived from tapping 56 of transformer 45, (2) an inverted full-wave rectified component tending to fire the device and provided by rectifier 95 fed from the source 13 over transformer 97 and phase-shiftng network 105, 107, and (3) a unidirectional component derived from the passage of current through resistor 53 when valve 49 is conducting. The last component opposes the first and allows the second component to fire the device 1 each cycle. Upon conduction of stopping valve 109, the third component of control voltage disappears and the second component is unable to maintain device 1 conducting. The trailing discharge device 3 is normally maintained non-conducting by grid-leak bias provided by transformer 33 and grid-leak and condenser 29, 27. A transformer 37, energized from the welding transformer, reduces the grid excitation of device 3 when device 1 passes current and so allows the former to trail the latter.