baber/WOPTO huggingface dataset:
Patent GB-1282291-A (GB)
Title: Ophthalmoscopic camera
Inventor: OKAJIMA HIROKAZU
IPC: A61B3/14
Filed: 1969-10-15
Abstract: 1282291 Opthalmoscopic camera NIPPON KOGAKU K K 15 Oct 1969 50742/69 Heading G2J In an opthalmoscopic camera an opaque centre stop P 2  and an aperture stop 4 are used to counteract the effects of unwanted reflections at an objective lens 3. A source 6 directs light to condensers 7, 8, 9 and so, via an apertured mirror M and objective 3, to an eye. Light reflected from the retina 1 then proceeds through the stop H and a second objective 4 to a film 5. The centre stop P 2  is positioned so that it is conjugate with the surface "b" of the objective 3 relative to lens 9, and the aperture stop H so that it is conjugate with the same surface b as viewed by back reflection at the surface "a" of objective 3. A ring shaped aperture P 1  may be positioned conjugate with the cornea 2 relative to the objective 3 and the effects of reflection at the cornea may thus be avoided if the aperture H is small enough and also conjugate with the cornea relative to objective 3.
Patent GB-1363850-A (GB)
Title: Purification ltd
IPC: C07C37/82
Filed: 1970-10-26
Abstract: 1363850 Purification of phenols IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Oct 1971 [26 Oct 1970] 50746/70 Heading C2C Phenols, such as cardanol and 3-pentadecylphenol obtained from cashew nut shell liquid, are purified by contacting the phenols with a non-carbonaceous adsorbent material followed by separation of the purified phenol from the adsorbent material. The adsorbent material is peferably fuller's earth.
Patent GB-1330360-A (GB)
Title: Cardiac steroid talomethylosides
IPC: C07D/
Filed: 1971-11-02
Abstract: 1330360 Steroid talomethylosides DR KARL THOMAE GmbH 2 Nov 1971 [2 Nov 1970 25 Sept 1971] 50939/71 Heading C2U The invention comprises compounds of formula wherein R 1  and R 2  are each H or C 2-4  alkanoyl, or together represent a -C(A)(B)- group in which A is H or Me and B is Me or Ph, or A, B and the intervening carbon atom together form a 6- or 7-membered cycloaliphatic ring; R 3  is H, C 2-4  alkanoyl or the acyl radical of a heterocyclic carboxylic acid; R 4  is CH 3 , CHO or CH 2 OH; R 5  is a 20(22)-cardenolide or 20, 22-bufadienolide lactone ring; R 6  is H and R 7  is H or OH or R 6  and R 7  together represent an additional 4,5- bond; with the provisos that (i) when R 5  is a cardenolide lactone ring and R 4  is CHO or CH 2 OH, then at least one of R 1 , R 2  and R 3  is other than H; and (ii) when R 5  is a bufadienolide lactone ring, then R 7  is other than H. Compounds I are prepared (a) by reduction of the 4<SP>1</SP>-oxo group in compounds of Formula II or (b) by reacting a compound of Formula III with a compound of Formula IV wherein R 4 <SP>1</SP> is CH 3  or CHO, Hal is Cl or Br and Ac is acyl. Method (a) (which may also be used for the preparation of compounds I which violate proviso (i) above) may be effected with a complex metal hydride and may result in partial or complete reduction of any 19-oxo group to hydroxy. Method (b) may be effected in the presence of Ag 2 O, Ag 2 CO 3 , Hg(CN) 2 , pyridine or 2,6-lutidine, and, when the groups Ac are other than as defined for R 1 , R 2  and R 3 , they must be removed. The products of methods (a) and (b) are convertible into other compounds of Formula I by esterification, acetalization, ketalization, hydrolysis of ester, acetal and ketal groups, and reduction of 19-oxo to hydroxy. Compounds II wherein R 1  and R 2  together represent a -C(A)(B)- group as defined above, are prepared by oxidation of the corresponding acetalized or ketalized α-L-rhamnosides. Compounds I are said to be cardioactive, and may be made up with carriers into pharmaceutical compositions for oral, rectal or parenteral administration.
Patent GB-1181774-A (GB)
Title: Quaternary Soldering Alloys
IPC: B23K35/26
Filed: 1968-10-29
Abstract: 1,181,774. Soldering. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 Oct., 1968 [1 Nov., 1967], No. 51183/68. Heading B3R. [Also in Division C7] Oxidic ceramic magnetic components, e.g. of manganese-zinc-ferrites or nickel-zinc-ferrites, are joined together by a soldering alloy consisting, by weight, of Bi 48-65% Sn 35-50% Sb 0À01-5% As 0À01- 5% The surfaces to be soldered may be chemically plated with a metal film, e.g. of copper. The example relates to a coil assembly consisting of a coil 3 on former 4, and a ferrite core which is in halves 1, 2 joined together by solder layer 5.
Patent GB-1491224-A (GB)
Title: Continuous label assembly
IPC: G09F3/02
Filed: 1975-10-30
Abstract: 1491224 Labels CONTROL SYSTEMS Ltd 30 Oct 1975 [27 Nov 1974] 51286/74 Heading B8F A continuous label assembly comprises a backing sheet 2 with marginal feed perforations 8 in the sheet and in reinforcing strips 7, and a plurality of labels 3 each mounted on the sheet by areas 4 of pressure sensitive adhesive separated from the remainder 5 of the label by lines of weakness 6, whereby the assembly may be fed through a computer printout, the labels applied to articles, and the central portions 5 removed on sale and used as stock control tags. The assembly may be made by coating the underside of a web with pressure sensitive adhesive along marginal areas, coating the upper face of the backing web with silicone release agent, uniting the webs, passing them between roller dies which cut out the labels and strips and form the perforations 6, and stripping off the waste material between the labels and between the labels and reinforcing strips.
Patent GB-1153992-A (GB)
Title: Improvements in or relating to Fluid Displacement Operated Switches or Valves
Inventor: PRATT ARTHUR THOMAS
IPC: F16K31/18
Filed: 1965-05-21
Abstract: 1,153,992. Valves. A. T. PRATT. 22 Aug., 1966 [21 May, 1965; 8 Dec., 1965], Nos. 21545/65 and 51974/65. Heading F2V. A float valve controls the flow of liquid into or out of a container and a generally horizontal displacer is provided in the container between the two liquid levels at which the valve is fully open and fully closed. The effect of this displacer is to take up part of the volume so that less liquid is necessary to fill or empty the space between the two levels. Various shapes of displacers are described and the container may be a flushing cistern or a hot water supply tank or transfer tank. In the latter case various methods of liquid transfer control are described.
Patent GB-1527770-A (GB)
Title: Stabilisation of acetal polymers
IPC: C08L77/02
Filed: 1975-12-19
Abstract: 1527770 Stabilized saturated aldehyde polymers SOC ITALIANA RESINE SIR SpA 19 Dec 1975 [20 Dec 1974] 52173/75 Heading C3P A stabilized composition comprises (1) an acetal polymer (i.e. a polymer of a saturated aldehyde) and (2) as stabilizer 0À02 to 12 parts by wt. per 100 p.b.w. of (1), of an A-B-R block copolymer wherein A is a polylactam block of the recurring units obtainable from one or more lactams of formula wherein PM is a linear C 3-13  polymethylene chain which may be substituted by at least one alkyl, aryl, cycloalkyl, or alkaryl group, B is a polyoxymethylene block and R is a terminal ester, ether, or urethane group. In the examples the acetal polymer (1) is a polyoxymethylene derived from formaldehyde. The exemplified stabilizers have a block A derived from pyrrolidone, epsilon caprolactam or N-acetyl lauryl lactam and all the B blocks are derived from formaldehyde. The exemplified capping group R is acetate.
Patent GB-1405657-A (GB)
Title: Cooling banks
IPC: B21B39/00
Filed: 1972-11-13
Abstract: 1405657 Cooling rolled work DAVYLOEWY Ltd 8 Feb 1974 [13 Nov 1972] 52308/72 Heading B3M [Also in Division B8] In a method of cooling hot elongate workpieces on a conveyer, initially workpieces of a first size are loaded on the entry side and simultaneously unloaded from the exit side of the conveyer (in a one-on/one-off manner) while the conveyer is stationary between feeding steps, and then workpieces of a second size are loaded and unloaded in a similar fashion, with the feeding steps of the conveyer being changed to correspond to the new size of workpiece, the one-on/one-off manner being temporarily suspended during the change-over between workpieces sizes. The changeover can occur in one of several different ways. In one form, Fig. 2, the conveyer 2 (which is loaded by an entry conveyer 6 and unloaded by an exit conveyer 10) is divided into zones A to D. When changing from workpieces 14 to smaller ones 12, the conveyer 2 is fed forward in its normal intermittent manner without the conveyer loading the workpieces 14, until the zone A is clear. The conveyer is then stopped, and the conveyer 6 progressively loads the smaller workpieces into the zone. The conveyer 2 is again moved through the distance of one zone and the procedure is repeated. When the whole conveyer holds the smaller workpieces, the normal one-on/one-off loading procedure is repeated, with the feed of the conveyer being equal to the closer spacing of the new workpieces. In a modified procedure, after the conveyer has been stopped with the zone A clear, the larger workpieces are progressively removed from zone D by the conveyer 10. The conveyer 2 can then be moved through the distance of one zone and the procedure repeated. Alternatively, the conveyer 2 may continue its normal intermittent movement with a displacement corresponding to the pitch of the larger workpieces, while the smaller workpieces are simultaneously loaded with a smaller spacing. This requires that the feeding movement of the conveyer 6 progressively increases as more of the smaller workpieces are loaded, and results in the zone A being empty when the conveyer 2 is otherwise fully loaded. After resetting the conveyer displacement to correspond to the small workpieces, and filling the zone A, the normal one-on/one-off routine is resumed. A similar method can be employed in which the displacement of the conveyer 2 is reduced as soon as the smaller workpieces begin to be loaded. This requires the travel of the unloading conveyer 10 progressively increases with successive workpieces until the larger workpieces are unloaded, and results in zone D being empty when zones A, B and C are fully loaded.
Patent GB-1126814-A (GB)
Title: Improvements in high power synchronous electrical machines
IPC: H02K1/16
Filed: 1965-12-10
Abstract: 1,126,814. Core constructions; securing coils for dynamo electric machines. ALLMANNA SVENSKA ELEKTRISKA A.B. 10 Dec., 1965 [12 Dec., 1964], No. 52449/65. Heading H2A. In a high power, i.e. more than 10 M.V.A., synchronous electrical machine having a rotor core supporting a field winding and surrounded by a stator core the stator armature coils 25 are supported by stator teeth 4 arranged such that the average circumferential length between two adjacent teeth is at least three times the average width of each tooth and the main part of the machine flux passes between the rotor and the stator without the aid of the stator teeth 4. In the turbo-generator shown the teeth 4 may be of glass fibre laminate or punched metal pieces which have a low magnetic conductivity and are insulated from each other, which are axially inserted into grooves 19 in the stator core. The armature coils 25 are formed of part conductors 23 which are insulated from each other and grouped together by insulation 30. The part conductors are transposed in the radial direction. The sides of these coils are secured between the stator teeth by tubes 22, into which epoxy resin is injected under pressure and then cured. The coils 25 are vacuum impregnated with epoxy resin as are the rotor field coils. Stainless steel tubes 31 within the armature coils provide cooling channels 24. In a modified form of stator teeth (Figs. 4 and 8, not shown), the teeth are formed of several non-magnetic parts arranged axially one after the other in grooves in the stator core and are secured together by a glass fibre rod (28). Alternatively the teeth may consist of insulated non-magnetic metal pieces mixed with punched magnetic pieces of shorter length, i.e. only filling a dove-tail groove (26) in the stator core and extending to line (33). The metal pieces may be punched from non-magnetic and magnetic metal strips welded at (34). A wedging action is provided by tubes 22, (29) filled with epoxy resin or alternatively wedges may be used. Rotor construction.-The rotor is surrounded by a steel cylinder 7, (Fig. 3), steel wires (14), welded rings (17) or soldered sectors of a cylinder (18, 19), (Figs. 5-7, not shown), which are pre-stressed. Also a damping winding (13) may be reinforced by pre-stressed steel wires (41), (Figs. 9 and 10, not shown). The damping winding is of tin-plated copper wires having hollow passages for cooling, or alternatively is solid, in which case the polepieces of the rotor core are provided with cooling passages (43, Fig. 2, not shown). The rotor may have two or more poles and strips of magnetic material may be placed in the rotor coils. The poles (9, Fig. 2, not shown), may be demountable along the dotted line (35).
Patent GB-1137007-A (GB)
Title: A method and apparatus for opening moulds of injection moulding machines
IPC: B29C33/20
Filed: 1966-11-24
Abstract: 1,137,007. Injection moulding machines. CONTINENTAL GUMMI - WERKE A.G. 24 Nov., 1966 [30 Nov., 1965], No. 52551/66. Heading B5A. In a method of opening a two- or multi-plate injection mould 2, 3, the uppermost mould plate 3 is first lifted substantially vertically and then with a combined vertical and angular movement. Opening is effected by levers 7 pivoted at 8 to guides 9 which are connected to a doubleacting cylinder 13. Pins 6 projecting from mould part 3 engage in recesses in the levers 7 and when extensions 10 of levers 7 engage roller stops 14 the angular movement commences. As shown, a two-part mould used for vulcanizing rubber bushes &c. injected in a press 1 is first moved out of the press on to a support 4 to which the lower mould plate 2 is clamped. A wedge member 5 initiates " breaking " of the mould plates 2, 3.
Patent GB-1357237-A (GB)
Title: Low temperature liquefied gas tanks
IPC: F17C3/06
Filed: 1972-11-14
Abstract: 1357237 Liquefied gas storage containers BRIDGESTONE LIQUEFIED GAS CO Ltd 14 Nov 1972 [24 Nov 1971] 52571/72 Heading F4P The membrane 3 of a membrane-type tank is supported, to prevent its collapse when empty, by a plurality of counterweights 9 mounted on arms 7 pivoted to posts 6 outside the outer tank 1, the arms 7 being connected by wires 8 or the like to a ring 4 secured to the top of the membrane 3. The latter comprises a base 3a connected by a curved edge to a side wall 3b and when the tank is filled with liquefied gas the load is transmitted to the wall la of the tank 1 via the insulation which is a rigid foam or has a rigid framework. Each wire 8 passes through a pipe P which is sealed by a flexible bellows 10. The counterweights are located in sealed chambers 11 which may be filled with inert gas and have removable covers 12. Alternatively the chambers 11 may communicate with the interior of the tank via a closable opening which is closed and the chamber 11 purged with inert gas before the cover 12 is removed.
Patent GB-1407437-A (GB)
Title: Herbicidal compositions and methods
IPC: A01N43/70
Filed: 1972-11-14
Abstract: 1407437 Mixed herbicides M A MORSE 31 Oct 1973 [14 Nov 1972] 52643/72 Heading A5E Herbicidal compositions and methods utilise as active ingredients a mixture of prometryne, terbutryne and atrazine and/or simazine. The action may be as total herbicides or as selective weed-killers in crops.
Patent GB-1405162-A (GB)
Title: Method and apparatus for resetting and reading out a counter
IPC: G06M1/30
Filed: 1972-11-16
Abstract: 1405162 Position encoders KIENZLE APPARATE GmbH 16 Nov 1972 [24 Nov 1971] 53072/72 Heading H3H [Also in Division G4] A counter having for each number wheel 2 a snail cam 41 for resetting to zero is provided with means for sensing the position of the cam prior to resetting and thus giving a read out of the position reached by the wheel. The counter may for instance form the value or quantity register of a liquid dispensing apparatus. At the end of each dispensing operation a cam assembly 15, 18 rigid with shaft 17 is rotated through one complete turn. Cam 18 normally holds a set of slides 26 away from the number wheels; as it is rotated, manually or by a motor, the slides are moved by springs towards the wheels until rollers 28 engage with the snail cams 41. Further rotation causes cam 15 to lift transfer wheels 8 clear of the number wheels 2 which are then driven back to zero by the action of the slides 26 on the snail cams 41. As shown in Fig. 1 the slides 26 carry pointers moving over scales. In Fig. 5 the slides comprise toothed racks 31 which drive pinions 32 to rotate a printing drum 33. This may also carry printed contacts 35 co-operating with a plurality of contacts 34 to give a coded output representing the value on the number wheels. Alternatively (Fig. 6, not shown) the slide carries a plurality of contacts which move over a fixed printed circuit to give a binary coded output. Means (not shown) is provided to align the lowest order number wheel to the nearest whole number position before sensing.
Patent GB-1335697-A (GB)
Title: Optical projection apparatus
IPC: G03G15/04
Filed: 1970-11-09
Abstract: 1335697 Optical projection apparatus XEROX CORP 9 Nov 1970 [14 Nov 1969] 53143/70 Heading G2A An optical projection apparatus, in which two transparent originals are arranged for simultaneous projection on to the same area of a light-receiving member located at an image plane, is provided with a light source 44 cooled by air from a fan, not shown, a heat absorber 48, a condenser assembly 49 in the light path to the originals, which are mounted in a carriage 47, there being one or two projection lens(es) 56 and a stationary plate having one slit per original after the carriage 47; the originals and light-receiving member are moved in synchronism to create a flowing image. The apparatus forms part of a photo-electro-phoretic copier Fig.1, (not shown), the carriage being driven in synchronism with an injecting electrode (1) by means of a cable 72 connected to the shaft (3) of the electrode. The cable 72 controls the movement of a crank arm 58 which in turn moves a follower 61 which pushes the carriage 47 so that the originals therein are scanned. The originals are two transparencies Fig.6, (not shown), one of which has an opaque centre area (105a) and a transparent border (105), so that the final copy will have a white border. The originals need not be coplanar Fig.9, in which case a semi-transparent mirror 114 is used to combine light beams 115, 129 passing through slits 123, 124. In another arrangement, Fig.10, (not shown), also using a single projection lens (137), a prism is used to combine the beams from the slits.
Patent GB-1382630-A (GB)
Title: Magnetrons
IPC: H01J25/76
Filed: 1972-11-17
Abstract: 1382630 Discharge tubes ENGLISH ELECTRIC VALVE CO Ltd 17 Nov 1972 53161/72 Addition to 1382502 Heading HID In a magnetron tuning arrangement according to the parent Specification, one of the multipactor electrodes is in the form of a thermionic cathode, and a magnetic field is provided to restrict the discharge, whereby the initiation and build-up of the latter is assisted. As shown, the central multipactor electrode 13, which is connected to the control system by the conductor ring 18, is the cathode, and a magnetic field is produced by the permanent magnet polepieces 20 and 29. A structure in which, instead, the two outer electrodes 11 and 12 are thermionic cathodes is referred to.
Patent GB-1357888-A (GB)
Title: Fuel burners
IPC: F23D11/00
Filed: 1970-11-09
Abstract: 1357888 Burners R B COOPER 7 Dec 1971 [9 Nov 1970] 53287/70 Heading F4T A fuel burner comprises an atomizer 3 giving a fuel jet with bodies 1, 2 arranged within each other for supplying air to the fuel jet, a slide 5 being provided for shutting of one or both of the air passages defined by the bodies 1, 2 as required to enable the burner to function with a minimum of excess air especially when working at low output. A swirler 4 is mounted on the atomizer 3 and as shown the atomizer is located in a body 7 connected to a separate supply of high pressure air, though this may be dispensed with if desired.
Patent GB-1476670-A (GB)
Title: Vortex clarifier
IPC: B04B5/12
Filed: 1974-12-10
Abstract: 1476670 Centrifugal separators QUEENS UNIVERSITY AT KINGSTON CANADA 10 Dec 1974 53348/74 Heading B2P A vortical separator for separating a fluid (as hereinafter defined) into heavy and light fractions comprises a separating annulus 24, Fig. 1, formed between an inner rotor 17 and an imperforate outer rotor 10 which are synchronously rotatable; a chamber communicating with the separating annulus and containing a set of impeller blades 20 for imparting angular momentum to the fluid and delivering it to the separating annulus along an axial flow path; and a plurality of stilling vanes 41 attached to the inner rotor 17 and extending radially towards the outer rotor to reduce the fluid flow cross-section, hence the turbulence, through the annulus and promote settling of the heavy fraction. The term "fluid" is defined as including particulate solids, liquids and gases and mixtures thereof which exhibit the properties of a fluid. The separator is constructed and operates substantially as the one described in Specification 1343729. As shown, however, bearings 42 permit shaft 16, inner rotor 17 and the vanes 41 to be rapidly stopped by a brake 44 while cylinder 10 continues to rotate with the fluid. A motor 49 drives, via a magnetic clutch 40 and a fluid coupling, a shaft 15 which is attached to a hub 28 and thus controls the rotation of outer rotor 10, conical portions 11, 12, vanes 20, 21 and hubs 28, 29. In operation, after an initial transient period in which the rotor 17 arid vanes 41 are accelerated to the rotational velocity of the rotor 10, the fluid rotates at the same velocity as the inner and outer walls of the annulus 24 and thus forms a forced vortex. The heavy fraction, e.g. sediment, is deposited against the outer wall of the annulus where it remains until the brake 44 is applied to cause relative movement between the vanes 41 and the rotor 10 thereby facilitating redispersion of the heavy fraction in the fluid. In Fig. 3 the vanes 142 are cut away towards the top and reduced in number at the top end by having some shorter vanes 143. Heavy fraction in the form of heavy inorganic sludges may be peeled off from the wall of the rotor 10 by the use of curved spikes 43 attached to the ends of some of the vanes. Instead of spikes, radially extending rods may be used or the vanes may be formed from moulded flexible plastics. In modifications: (a) the rotor 17 and the stilling vanes 1 may be locked to the hubs 28, 29 and the vanes may extend into the inlet area to merge with the vanes 20; (b) the drive may be applied to the rotor 17 rather than to the rotor 10 and vanes 41 may extend upwardly to take over the functioning of the vanes 20; (c) rotor 10 may be braked rather than rotor 17; (d) by mounting field coils inside casing 30 the rotor 10 could form the rotor of a motor and the shaft 15 would then be dispensed with.