baber/WOPTO huggingface dataset:
Patent GB-560608-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/00
Filed: 1942-10-06
Abstract: 560,608. Optical objectives. TAYLOR, TAYLOR, & HOBSON, Ltd., WARMISHAM, A., and WYNNE, C. G. Oct. 6, 1942, No. 14033. [Class 97 (i)] In an optical objective comprising a simple divergent component spaced between two simple convergent components, the numerical sum of the radii R1, R6, of the first and last surfaces lies between 90 per cent and 130 per cent of the equivalent focal length F, the axial separation between these surfaces lies between 40 per cent and 50 per cent of F, and at least one of the convergent components is made of material having refractive index between 1.7 and 1.8 and AbbÚ V number greater than 50 ; the AbbÚ V number is preferably less than 58. One or both convergent components may be made of crystalline magnesium oxide; the divergent component may be made of dense flint glass or of an alkaline halide crystal. The materials for all three components may have the same relative partial dispersion to correct. for secondary dispersion without sacrificing corrections for astigmatism, field curvature, and distortion. Desirable limits for refractive index and AbbÚ V number of the divergent component, and complete data for three examples, one comprising #-magnesium oxide for the convergent components and sodium bromide for the divergent component, are set out.
Patent GB-418685-A (GB)
Title: Improvements in and connected with sorting and/or grading apparatus
IPC: B07B13/00
Filed: 1933-05-15
Abstract: 418,685. Separating solid materials. STODDART, J., 23, Alexandra Drive, Surbiton, Surrey. May 15, 1933, No. 14043. [Class 117.] Apparatus for grading fruit &c. consists of a number of endless conveyer members located side by side and all arranged in parallel vertical planes, alternate members being diverged in a vertical direction from the others. The apparatus may be adapted for preliminary hand-picking by maintaining all the members in the same horizontal plane for part of their upper run, and providing some of the belts to act as a conveyer for the rejected product. In the form shown in Figs. 2 and 3, two side belts 2, 3 are formed of blocks 7 of indiarubber, wood, &c. mounted in metal carriers linked together and running over guide rails. The inner edges of the blocks are formed with wide V-shaped recesses 8 and the upper corners are bevelled or rounded as at 10. The central belt consists of blocks 4 of pyramidal shape mounted on metal carriers 16 linked together and running over a guide 24. Alternatively, the blocks may be carried by an endless flexible belt. The belts run over guide pulleys and sprocket wheels which are so adjusted that the side belts lie in the same horizontal plane during the whole of their upper run, and the centre belt for the first part of the run lies in the same plane, but thereafter diverges from this plane in a downward direction to form the size grading apertures in the conveyer as indicated by dotted lines in Fig. 3. In alternative constructions, the conveying members are in the form of belts of triangular section which run over guides 31, as shown in Fig. 9, or of quadrilateral section. Receptacles for the handpicked and sized products are provided at the end of and under the conveyers.
Patent GB-812759-A (GB)
Title: Improved process and apparatus for comminuting solid synthetic resinous materials
Inventor: COOK ALBERT HENRY
IPC: B26D1/38
Filed: 1956-05-07
Abstract: 812,759. Comminuting synthetic resins. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 17, 1957 [May 7, 1956], No. 14045/56. Class 87(2). Strips of solid synthetic resinous material are passed between two rollers 1, 1<SP>1</SP> at least one of which is driven and each of which has teeth 2, 2<SP>1</SP> around its circumference that are rectangular in cross-section and mesh with those of the other but do not project to the full depth of the gaps between the teeth, the strips being as a result forced into the gaps and sheared into particles. These particles are expelled from the gaps before the latter again reach the engaging position. For this purpose, bars 6, 6<SP>1</SP> urged against the bases of the gaps by garter springs (not shown) are pushed outwardly, as the rollers 1, 1<SP>1</SP> rotate by rods 7, 7<SP>1</SP> which bear against the rotating eccentric rollers 4, 4<SP>1</SP>. In an alterntaive arrangement, the bars extend beyond the ends of the toothed rollers and are pushed outwards by means of ramps.
Patent GB-369061-A (GB)
Title: Improvements relating to pivots and bearings of the friction or braking type, for horizontally and vertically pivoted casements whereby these types of ventilators can beheld at any desired position
IPC: E05D7/08
Filed: 1931-05-13
Abstract: 369,061. Friction pivots. MARCHBANK, J., 53, Finlay Drive, Dennistoun, and MACKENZIE, K. D., of Braby & Co., Petershill, both in Glasgow. May 13, 1931, No. 14102. [Class 65 (ii).] A friction pivot for windows and the like comprises a member 4 rotating on a boss and within an annular wall 2 of a member 1, the inner member 4 having a brake block 11, mounted in a shoe 10, which is pressed against the inside of the annular wall 2 of the outer member to produce the required friction. The pressure is applied by a spring in a housing fixed to the inner member 4, through a lever 16 pivoted on the housing. The pressure of the spring is adjustable by means of a screw, as shown, or a cam or other means.
Patent GB-1510112-A (GB)
Title: Electromagnetic waveguides
IPC: H01P11/00
Filed: 1974-03-29
Abstract: 1510112 Forming waveguides by winding BICC Ltd 27 March 1975 [29 March 1974] 14175/74 Heading B8G [Also in Division H1] A circular waveguide consists of a multilayer structure in which one of the layers comprises reinforcing elements (e.g. glass-fibres) which extend substantially longitudinally over the full length of a waveguide section. The elements may lie parallel to the axis of the waveguide or may lie on a helix of long pitch, i.e. a pitch of no more than two turns per meter. The waveguide comprises an inner conductive tube which may be made from a winding 1 of insulated or bare copper wire, or from solid metal or metal alloy. The internal surface may have a lining of polymeric material (not shown). A reinforcing wall 2 consists of a number of layers of resin-bonded glass-fibre rovings, one or more such layers having longitudinally-extending (glass-fibre) reinforcement. The layer adjacent the winding 1 may incorporate dissipative material, e.g. graphite, dispensed in the binding material. The wall 2 is surmounted by a layer 3 of resin-bonded glass-fibre rovings applied helically, by a metallic moisture-proof barrier 4 and an outermost layer 5 of resin-bonded helically-wound glass-fibre tapes. The longitudinally-extending reinforcement in the wall 2 is applied by means of an annular guide 12 which surrounds a mandrel 10 and is connected to a mechanism (not shown) for imparting relative axial reciprocating motion to the guide and the mandrel. The mandrel supports the innermost conductive layer 1 of the waveguide and is provided, at its upper end, with a collar 18 bearing projections 19 and, at its lower end, with a plug 16 bearing projections 17. The ends 21 of the reinforcing fibres are secured to the inside of the plug 16 and led through radial holes 14 in the guide 12. As the guide reciprocates, the fibres are looped around the projections 17 and 19. A slight rotation is imparted to the mandrel 10 at the end of each traverse so that the fibres are circumferentially displaced between adjacent projections. A helical lay may be achieved by rotating the mandrel during traverse of the guide. The fibres may be impregnated with resin either before or after application to the conductive tube 1.
Patent GB-805575-A (GB)
Title: Substituted amides of trihaloacetic acids
IPC: C07D295/13
Filed: 1957-05-03
Abstract: The invention comprises compounds of the formula C(R)3.CO.N(R1).A.B. (wherein R is halogen, R1 is hydrogen or an alkyl, 3:4-dimethoxybenzyl or benzyl radical, A is a divalent saturated aliphatic hydrocarbon radical of two to six carbon atoms and B is a piperidino, morpholino, 2:6-dimethylmorpholino, pyrrolidino, pipecolino or dialkylamino radical) and their non-toxic acid addition salts.  They may be prepared by reacting a trihaloacetic acid halide, ester or azide with the appropriate amino-alkyl-tertiary-amine or by reacting the metallated amide of a trihaloacetic acid with the appropriate tertiary amino-alkyl halide.  Salt-forming acids referred to are hydrohalic, sulphuric, phosphoric, maleic, acetic, citric, oxalic, succinic, benzoic, tartaric, fumaric, mandelic, malic and ascorbic acids and 8-chlorotheophylline.  In examples: (1) to (5) N-(b -morpholino-ethyl)-trichloracetamide hydrochloride and the corresponding piperidino and dimethylamino compounds, N - methyl - N - (b  - dimethylaminoethyl)- and N-(3-pyrrolidinopropyl) - trichloracetamide hydrochlorides are prepared by admixture of trichloracetyl chloride and the appropriate amine in benzene and the preparation of the free base corresponding to the first of these compounds is referred to; (6) N-(b -piperidinoethyl) - tribromoacetamide hydrobromide is similarly prepared from tribromoacetyl bromide and N-(b -aminoethyl)-piperidine; (7) trifluoroacetyl chloride replaces the tribromoacetyl bromide of (6), the product being N-(b -piperidinoethyl)-trifluoroacetamide hydrochloride; (8) N - (3 - morpholinopropyl) - trichloracetamide hydrochloride is prepared by the method of (1) and liberation of the corresponding free base is referred to; (9) N-(b -aminoethyl)-morpholine and veratraldehyde in benzene give 1-morpholino - 2 - (31 : 41 - dimethoxybenzylidene - imino)-ethane, this is catalytically hydrogenated to give 1 - morpholino - 2 - (31:41 - dimethoxybenzylamino) - ethane (hydrochloride also described) and this with trichloracetyl chloride in acetone gives N - (b  - morpholinoethyl) - N - (3:4 - dimethoxybenzyl) - trichloracetamide hydrochloride; (10) N - (b  - morpholinoethyl) - N - benzyl - trichloracetamide hydrochloride is similarly prepared; (11) N-[b -(2:6-dimethylmorpholino)ethyl]- an N-[b -(alpha-pipecolino)ethyl]-trichloracetamide hydrochlorides are prepared by the method of (1).
Patent GB-809964-A (GB)
Title: Combined refrigeration and starting system for aircraft
Inventor: WALKER ALLEN CHIVERS
IPC: B64D13/08
Filed: 1956-05-08
Abstract: 809,964. Engine turning gear. ROTOL Ltd. May 1,1957 [May 8, 1956], No. 14292/56. Class 7(5) [Also in Groups XIII and XXVI] An aircraft has a propulsion engine including a rotatable assembly powered to rotate against a load during operation of the engine and rotatable to start the engine, and a combined refrigeration, and starting system comprising a heat extracting air turbine connected to drive the rotatable assembly through a unidirectional clutch and an inlet duct for conveying compressed air to the turbine. Turbines 13, 20 are connected to ram intakes 11, 17 by ducts 12, 18 and cooled air from turbine 13 is led through heat exchanger 15, cooling the compressed air passing to turbine 20. The turbines are connected by unidirectional clutches 24, 25 and gearing 28 to shaft 29 driving the compressor rotor/ turbine rotor assembly of a gas turbine engine. Valves 31, 32 connect the turbines to an intake 33 for connection to a ground installation providing compressed air. According to the Provisional Specification these valves may be dispensed with and the intakes 11, 17 adapted for such connection.
Patent GB-1481494-A (GB)
Title: Train position indicator
IPC: G01S13/75
Filed: 1975-04-08
Abstract: 1481494 Track apparatus STANDARD TELEPHONES & CABLES Ltd 8 April 1975 14319/75 Heading B7N [Also in Division H4] In the train position indicating system in which low power radar is used to interrogate simple transponders moving relative to the radar as described in Specification 1,479,616 inductive coupling means is provided between the radar and each transponder so that each transducer is enabled to provide a response only when the radar is close enough thereto to trigger inductively the transponder. As described, the radar device 1 mounted on a train includes an inductive coupling loop 12 located adjacent antenna 11, and driven by a 100 kHz signal from oscillator 13. The track mounted transponder 2 comprises an inductive track loop 22 adjacent its antenna 21. Mutual coupling between loops occurs only when train antenna 11 is substantially above antenna 21 so that spurious responses from nearby transponders are avoided. Track loop 22 is coupled to RC tuned rectifying network 23, 24, 25 which provides a D.C. output signal when mutual coupling between loops 12 and 22 occurs. Transponder 20 input comprises a switching means (not shown), e.g. a F.E.T., which is responsive to the D.C. signal 26, the presence of which enables the transponder. The presence of inductive coupling and therefore of a transponder can be detected in oscillator 13 on the train and may be used to trigger an alarm on lack of detection of the associated response signal received by radar 10 from the same transponder.
Patent GB-378511-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04C11/08
Filed: 1931-05-14
Abstract: 378,511. Electric clocks. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. May 14, 1931, No. 14328. Convention date, May 15, 1930. [Class 139.] Synchronizing; winding-apparatus, electric.- In a clock mechanically driven from an energy accumulator (e.g. spring), means are provided for keeping the period of oscillation of the balance (or pendulum) equal to a predetermined number of half cycles of the A.C. supply. The mainspring in barrel 8, driving the hands 12, 13 through train 9, 10, is maintained wound by a Ferraris motor 1, 2 through a train 3 .. 7 which includes a slip coupling. The train 9, 10 is controlled by an escapement having a balance 16 with a magnetic pin 17 (e.g. permanent magnet) which swings between the poles 18, 19 ; these poles are extensions of the motor stator 1. During each oscillation of the balance, the magnetic field produced at 18, 19 by the A.C. supply (e.g. lighting mains) oscillates through several half-waves, only one, say the first, of which will always act on pin 17 since the latter is only close to the poles 18, 19 at that moment. If the oscillation of the balance takes more or less time than corresponds to the above-mentioned plurality of half waves, then the balance is either retarded or accelerated by the following half wave which corresponds to the first half wave and the balance is thus brought back into phase. In a modification the poles 18, 19 are on a member which is separate from the Ferraris motor but is energized from a secondary winding on the motor. In a further modification, Figs. 3-5, a bar magnet 21 on the balance 16 is controlled by poles 22, 23 of a magnet 25 which is connected to a lighting system either directly, or through a transformer 26. As above, the balance is brought into phase (in one direction of swing) by a particular half wave (shown shaded in Fig. 5), the half waves of opposite polarity immediately preceding and following this half wave being suppressed, Figs. 4 and 5, by the use of a rectifier 27. In the other direction of swing no correction of the balance is effected since the frequency of supply and the timing of the balance oscillation are such that the magnet 21 reaches the poles at the time a suppressed half wave would normally be passing.
Patent GB-671645-A (GB)
Title: Improvements in or relating to regulating systems for dynamo-electric machines
IPC: H02P9/10
Filed: 1948-05-27
Abstract: 671,645. Exciting dynamo-electric machines. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 27, 1948 [June 2, 1947], No. 14338/48. Classes 35 and 38 (iv). The exciter of a generator is controlled in dependence on the voltage of the load circuit, and also in dependence on the output of the generator and its field excitation to maintain the field above a certain value. The pilot exciter 30 of the A.C. generator 10 is selfexcited by a series winding 32, small adjustments being made on an adjustable shunt winding 34. The exciter is controlled by windings 36, 60. The control winding 36 is connected through a reference network 42 and potential transformer 44. The network comprises a non-linear impedance circuit 46 and a linear impedance circuit 48 connected through rectifiers 50, 52 to the winding. At a predetermined line voltage the rectifier outputs are equal and balance each other, but any departure of line voltage is reflected as a current in winding 36 in an appropriate direction. The control winding 60 is energized in dependence on both the voltage across the generator field winding 20 tapped off a potentiometer 26, and the output of the generator as measured by network 64. The network 64 is fed both from current transformers 78, 80 and potential transformer 44 so that its rectified output depends on the output of the machine. When the excitation voltage falls below a certain value, the voltage derived from network 64 passes current through the winding 60 to increase the excitation. A resistor 76 may be non-linear to provide temperature compensation. Specification 671,646 is referred to.
Patent GB-295926-A (GB)
Title: Improvements in or relating to lever-lid tins
IPC: B65D43/02
Filed: 1928-05-16
Abstract: 295,926. Robinson & Co., Ltd., F., and Robinson, F. G. May 16, 1928. Rims of openings.-To provide a smooth outlet opening, the lower portion of the lid-engaging flange 4 of the recessed neck-piece 3 of a lever lid tin, is flared outwardly so that the edge meets the underside of the annular recess.
Patent GB-354382-A (GB)
Title: Improvements in or relating to float-controlled valves
IPC: E03D1/32
Filed: 1930-05-09
Abstract: 354,382. Ball and float valves. WARNER, F. H., Corn Exchange Iron Works, Cornhill, Ipswich. May 9, 1930, No. 14370. [Class 135.] Relates to float-controlled mechanism for cistern supply valves in which an auxiliary receptacle, controlled at the bottom by a low-level float valve, provides for a quick opening and closing of the supply valve and a complete closure thereof until the end of the discharge from the cistern. The low-level float 16 is hereby provided with a basin 31 which is filled with liquid from the auxiliary receptacle 11, when the valve 20 is opened by the fall of the float 16 at the end of the discharge ; this ensures rapid and complete opening of said valve 20 and consequently a quick emptying of the auxiliary receptacle, and opening of the main supply valve by fall of the main float 12. The supply valve remains fully open until the liquid level reaches the upper rim 14 of the auxiliary receptacle whereupon the liquid overflows into and fills the receptacle and raises the float 12 to close the main supply valve. The area of the upper mouth of the receptacle is large in relation to its cubic capacity so that the receptacle fills quickly and the supply is correspondingly quickly closed. The liquid load in the basin 31 drains away through the leak 32. The receptacle 11 is carried by a bracket 13 on the side of the cistern, and the valve 20 is surrounded by a skirt 34.
Patent GB-514786-A (GB)
Title: An improved apparatus for diluting and delivering viscous liquids and compositions
IPC: B01F13/10
Filed: 1938-05-16
Abstract: 514,786. Mixing fluids in flow. BENNETT (HYDE), Ltd. May 16, 1938, No. 14506. Convention date, May 14, 1937. [Class 86] Apparatus for diluting size or other viscous liquids comprises an injector by means of which a stream of water &c. is mixed with a proportionate amount of the size, the injector being furnished with a by-pass whereby a further supply of water is added to the mixture. Water under pressure is supplied through a pipe 10 to aligned nozzles 17, 18 which induce a flow of size up the pipe 16 which dips into a barrel. The stream impinges on a plug 19 thus producing turbulence to effect complete mixing, and is discharged through a valve 15. An added supply of water passes through the pipe 13 fitted with a valve 20.
Patent GB-199713-A (GB)
Title: Improvements in or relating to the treatment of titaniumnitrogen compounds
IPC: C01C1/24
Filed: 1923-06-01
Abstract: Titanium-nitrogen compounds are treated with diluted sulphuric acid in quantity not materially greater than that necessary to combine with the nitrogen and the impurities at a pressure greater than atmospheric and at a suitable temperature, the products being titanium oxide and ammonium sulphate.  In an example 1.33 parts of 50 per cent sulphuric acid is employed with 1 part of nitride at a heat necessary to produce a pressure of 25 atmospheres.  The titanium oxide obtained contains a small quantity of nitrogen and may be treated again with sulphuric acid under pressure to remove the nitrogen, the acid liquor obtained being used for treating fresh nitride.  Specification 115,020 is referred to.  The Specification as open to inspection under Sect. 91 (3) (a), is not limited to the use of a small quantity of sulphuric acid, and the titanium may therefore be converted into sulphate.  This subject-matter does not appear in the Specification as accepted.ALSO:Titanium-nitrogen compounds are treated with diluted sulphuric acid in quantity not materially greater than that required to combine with the nitrogen and the impurities at a pressure greater than atmospheric and at a suitable temperature, the products being titanium oxide and ammonium sulphate. In an example, 1.33 parts of 50 per cent sulphuric acid are employed to one part of nitride at a heat necessary to produce a pressure of 25 atmospheres.  The titanium oxide obtained contains a small quantity of nitrogen and may be treated again with sulphuric acid under pressure to remove the nitrogen, the acid liquor obtained being used for treating fresh nitride.  Specification 115,020 is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) is not limited to the use of a small quantity of sulphuric acid and the titanium may therefore be converted to sulphate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1080194-A (GB)
Title: Device for securing remote-control manipulators against rotation
Inventor: MAS ROLAND GEORGES
IPC: B25J19/00
Filed: 1966-04-01
Abstract: 1,080,194. Manipulators. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 1, 1966 [April 23, 1965], No. 14584/66. Heading B4Q. [Also in Division B8] A remotely controlled manipulator 1, 2, 3 provided with gripping jaws supported for rotation about the longitudinal axis of a member 11 locks itself against rotation about a post 8 by moving to the position illustrated and closing the jaws 19, 20 of a clamp 17 fixed on a housing 7 on to a fixed flange 10. The jaws are operated by a screw which is rotated by the gripping jaws. The movements of the manipulator are effected by driving motors and slipping clutches in housings 7, 12.
Patent GB-927417-A (GB)
Title: Lambswool duster
IPC: A47L13/38
Filed: 1961-04-24
Abstract: 927,417. Dusters. T. S. McCANN. March 19,1962 [April 24,1961], No. 14734/61. Class 19. A dusting mop comprises a sleeve of wool bearing skin 1, threaded on to a flexible looped wire 2 and secured to a tubular handle 4 so that the sleeve seam 6 extends along the inside of the loop, and is held in position by a staple 7. In another embodiment the loop of wire 2 may be rigid and the handle 4 a solid rod.