baber/WOPTO huggingface dataset:
Patent GB-911040-A (GB)
Title: Improvements in defluorination of phosphoric acid
IPC: C01B25/234
Filed: 1960-12-12
Abstract: Fluoride-containing relatively dilute (i.e. not more than 30% by weight BO5 phosphoric acid is defluorinated by mixing it with an amount of volatile mineral acid such that the weight ratio of said mineral acid (calculated as equivalent HCl) to phosphoric acid (calculated as P2O5) in the mixture is at least 0,1, preferably between 0,3 and 0,8, heating the mixture to a temperature sufficient to vaporize the volatile fluoride constituents thereof, e.g. from 100 DEG  to 500 DEG F., and recovering the defluorinated phosphate acid product.  Reactive silica may be added in addition to mineral acid, the amount of silica added being sufficient to convert to fluosilicic acid all of the fluorides not already present in the form of fluosilicic acid. Specified mineral acids are hydrochloric acid, nitric acid, and perchloric acid.  The heating may be continued until the acid mixture contains less than one part by weight of fluorine per 100 parts by weight of phosphorus, and concentrated phosphoric acid containing at least 40% by weight P2O5 may be produced. The process is particularly suited to the defluorination of phosphoric acid produced by the acidulation of phosphate rock, and in this case reactive silica may be added to the phosphoric acid during the production process.  In an example the temperature to which the mixture is heated is 280 DEG F.
Patent GB-1476528-A (GB)
Title: Highly reactive resin compositions hardenable by uv-light
IPC: C08F2/50
Filed: 1974-10-02
Abstract: 1476528 Photohardenable resin compositions BAYER AG 2 Oct 1974 [4 Oct 1973] 42731/74 Headings C3B and C3P An UV-light hardenable mixture comprises by wt. 30-95% (A) a reaction product of (i) polyepoxide(s) containing #12,3-epoxypropyl group and (ii) acrylic and/or methacrylic acid, 0À6-1 mole COOH having been used per mole epoxy groups; 5-70% (B) tri-, tetra-, penta- or hexa-acrylic or methacrylic ester of a tri-, tetra-, penta-, or hexahydric alcohol; and 0À2-10%, based on (A) + (B), of (C) a photo initiator where Ar is aromatic, R 1  is an optionally alkylsubstituted C 1-12  alkyl, or a cycloalkyl optionally containing O as hetero-atom, and R 2  is optionally halogenated benzyl or alkyl or - CH 2 CH 2 X where X is CN, CONH 2 , or COOR 3 , where R 3  is H or C 1-10  aklyl. A polymerization inhibitor may be also present. (C) may be a benzoin derivative. Also present may be # 5%, based on (A) + (B), of (D) a tertiary amine or a mercapto compound. The mixture may be prepared by mixing the components, or by reacting (A) (i) and (ii) in the presence of (B), and subsequently admixing (C). Use: coating or impregnating wood, paper, leather, textiles or plastics; as binder for printing inks.
Patent GB-1128080-A (GB)
Title: Ultra-achromatic lens system
Inventor: TAKAHASHI YASUO
IPC: G02B13/00
Filed: 1966-09-26
Abstract: 1,128,080. Optical objectives. ASAHI KOGAKU KOGYO K.K. Sept.26, 1966, No. 42909/66. Heading G2J. An ultra-achromatic photographic objective of focal length F and power #, particularly for a wavelength range of 200 - 800 mÁ includes fluorite and fused silica lenses and consists of five air-spaced lenses wherein:- # 1 .... i being the resultant power of the first to the i<SP>th</SP> lenses. Optical data are given for the example shown wherein the positive lenses are of fluorite and the negative ones of fused silica.
Patent GB-951183-A (GB)
Title: Sewing machine unit
IPC: D05B35/12
Filed: 1962-11-14
Abstract: 951,183. Sewing machines. SINGER CO. Nov. 14,1962 [Nov.24, 1961], No.43006/62. Heading D1G. The arrangement described in Specification 906,300 is modified by disconnecting the travelling work-holder from the work clamp of the cyclical sewing machine, by mounting the work-holder for movement in a rectilinear path, and by arranging for the spaced work grippers of the work-holder to move towards each other upon operation of the sewing machine for providing slack in the work during the sewing operation to accommodate movement of the sewing machine work clamp. A work-holder 14 carries brackets 30 journalling rollers supported by a fixed runway 32. One end of a chain 33, secured to holder 14, is fixed to a vertically-movable carriage 38 adapted to be moved in steps by indexing means, and the other end is fixed to a counterweight. Work grippers 50 and 51 are respectively pivoted at 52 to work-holder 14 and normally engage abutments 54 carried by the latter to hold the work stretched therebetween. The grippers are connected by links 56 to respective arms of a three-armed lever 62 pivoted at 64 to holder 14. The third arm is connected by a link 75 to a forked member 80 which is rigid with holder 14 and which slidably embraces a shaft 73. The latter is carried by two arms 72 rigid with a shaft 71 journalled in fixed brackets 70. An arm 90 rigid with shaft 71 is connected by a link 92 to the lower end of a two-armed lever 97 pivoted on a fixed bracket 96. The inner ends of horizontal levers 99,100, pivoted at 101 and 102 on bracket 96, are pivoted together, and the outer ends are pivoted respectively to the upper end of lever 97 and to an arm 104 rigid with the starting lever 20 of a buttonhole sewing machine 12. The arrangement is thereby such that when lever 20 is in the non-operative position the grippers 50, 51 engage the abutments 54 to stretch the work, and when lever 20 moves to the running position the grippers pivot towards each other to slacken the work held therebetween.
Patent GB-1313815-A (GB)
Title: Hydraulically controlled pumping system
IPC: F16K31/24
Filed: 1971-09-16
Abstract: 1313815 Valves SHERRITT GORDON MINES Ltd 16 Sept 1971 [30 Sept 1970] 43319/71 Heading F2V [Also in Division F1] A valve 28 is controlled in accordance with the liquid level 60 in a tank by means of a float 44, the float arm 26 being bent to form a cam 49 which acts on a follower 48. A liquidtight seal around the arm 26 is provided by a boot 58 of rubber, neoprene or the like cemented to the tank wall 24. The valve 28 controls the supply of driving liquid to an hydraulic motor driving a centrifugal pump which withdraws liquid from (or supplies liquid to) the tank.
Patent GB-1519456-A (GB)
Title: Wideband amplifier arrangement
IPC: H03F1/32
Filed: 1975-09-18
Abstract: 1519456 Amplifiers POST OFFICE 18 Sept 1975 [7 Oct 1974] 43362/74 Heading H3T A wideband amplifier using feed-forward to improve linearity, comprises first and second input paths in parallel, the first path having an amplifier 5, 6, and the second path having a passive impedance 13 in series with a delay line 14, an attenuator 10 coupling an output from the first path to produce at the output of the second path 16 an error signal proportional to the non-linearity of the amplifier 5, 6, an error amplifier 17, 18 connected to receive the error signal, and another output 21 from the first path including a passive impedance 22 and a delay line 23, being coupled with the output of the error amplifier to produce an output corrected for non-linearity. The delay line 14 compensates for the delay of 5, 6 and 10 etc so that the delays from input 1 to 16 along each path are equal, the capacitor 13 being added in order to obtain a better match with the phase/frequency characteristic (A), Fig. 2 (not shown), of the amplifier 5, 6. Similar considerations apply to the delay line 23 and the capacitor 22 in relation to the amplifier 17,18. The attenuator 10 compensates for the gain of 5, 6 so that the resultant attenuations along each path from input 1 to 16 are equal, the power hybrid 12 producing an output equal to the difference between the inputs at 11 and 15. The power combiner 20 subtracts the amplified error input at 19 from the uncorrected input at 24. It is not essential for the input signal at 1 to be divided into outputs of equal power at 3 and 4 provided that the attenuation of 10 and the gain of 17, 18 are correctly chosen.
Patent GB-1141938-A (GB)
Title: Electrical connector
IPC: H01R13/432
Filed: 1967-09-25
Abstract: 1,141,938. Two-part couplings. UNITEDCARR Inc. 25 Sept., 1967 [26 Sept., 1966], No. 43557/67. Heading H2E. A contact is retained in a cavity 24 of an insulating body 20 by engagement of a resilient tongue 18 with a shoulder 30 and of a flange 11 with the rim 32 of the cavity, the contact being inserted in the forward end 22 of the cavity and being releasable by a tool 34 also inserted in the cavity forward end 22. A pair of opposed resilient blades 14 on the contact grip a co-operating contact which is received in a rectangular aperture 12 in the flange 11, the blades 14 and stabilizing arms 16 being bent at right angles from a planar base 10 which overlies a channel 26 opening into the cavity for receiving the tool 34. In a modification (Figs. 5-8, not shown) the apertured flange 11 is replaced by two spaced limbs (44) which each engage the rim of the cavity, the resilient tongue (48) being formed by a bent portion of an arm (46) corresponding in position to an arm 16. An insulating body 20 containing several such contacts is mounted on a printed circuit board, terminal tags of the contacts being soldered to the printed circuitry.
Patent GB-1406716-A (GB)
Title: Blow moulded parenteral solution container and method of making same
IPC: B29C65/00
Filed: 1972-09-20
Abstract: 1406716 Parenteral solution containers BAXTER LABORATORIES INC 20 Sept 1972 [20 Sept 1971] 43602/72 Heading A5R [Also in Division B5] A blow-mould for a container for a parentera1 solution comprises a pair of cooperating mould halves movable between open and closed positions for receiving and moulding a plastics parison respectively, the cavity having opposed grooves to produce opposed ahannels in the moulded article. As shown in Fig 13, parison 43 is extruded from extruder 65 between open mould halves 48, 50, which are then closed by cylinders 51 to seal the lower end by means 49 which also form rigid bar 26, Fig 1 and handle 28 at 53. The parison is then blown moulded and filled by the fluid contents supplied from tube 67, after which cylinders 63 close top sealing means 61, which also form outlets 14, 18. The material may be polyvinyl chloride or polypropylene. The opposed channels act to cause the container to collapse into a flat form as the solution drains from the container.
Patent GB-1166256-A (GB)
Title: Improvements in or relating to Belt and Chain Gearing.
Inventor: FULFORD DENNIS RODNEY
IPC: F16H7/08
Filed: 1965-10-14
Abstract: 1,166,256. Gearing for stopping machinery; belt tensioning. ATKINS FULFORD Ltd. 16 Jan., 1967 [14 Oct., 1965], No. 43603/65. Headings F2L and F2Q. In an overload release mechanism for a belt or chain gear wherein a spring 10 normally acts through levers 8, 9b to maintain a drive between pulleys or sprockets 2, 3, the pulley or sprocket 3 is mounted on a lever 4 and is moved laterally on overload whereupon the upper end of the lever 4 rotates the lever 9b clockwise to bring the spring 10 to an overcentre position in which it acts on the lever 8 to disconnect the drive. As shown in a belt gear the spring 10 acts through a bellcrank 8 to press a tensioning pulley 7 against the belt 1. On overload the spring is moved over the bellcrank pivot whereupon the pulley 7 is moved away from the belt 1 to disconnect the drive. A handle 9a fast with the lever 9b resets the mechanism and may be used to effect manual disengagement of the drive. The overload at which disengagement occurs may be adjusted by adjusting the tension of the spring 10 at 12 or by adjusting the position of a stop 14 which the lever 9b normally abuts. In Fig. 3 (not shown), the chain of a chain gear is maintained tensioned by a spring pressed roller (17) and the drive is disengaged by a clutch. The spring normally acts through a lever (18) and link (20) to engage the clutch. On overload the spring is moved over the pivot point of the lever (18) which then acts through the link (20) to disengage the clutch.
Patent GB-1339217-A (GB)
Title: Shaving industries ltd shaving head for dry-shaving apparatus
IPC: B26B19/14
Filed: 1972-09-22
Abstract: 1339217 Dry shavers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 22 Sept 1972 [25 Sept 1971] 43954/72 Heading B4B A shaving head for a dry shaver comprises a shear plate 3 and a rotary cutter 2 including a number of cutter blades 9, mounted carrier 4, the centre of gravity 15 of each blade being so arranged that when the blade deviates, in use. from initial contact with the shear plate, the centrifugal and centripetal forces acting on the blade provides a couple which tends to restore engagement with the shear plate. The blades are mounted in slots 8 formed in the carrier and urged by springs 12 into engagement with the shear plate. Each blade is formed with a curved edge 13 which operatively engages the radial outer end of the respective slot 8 under centrifugal force. The centre of curvature of the edge 13, centre of gravity 15 and point of contact of the edge 13 with the opening 8 lie in a common straight line when the razor is not in use. In the modification shown in Figs. 8 and 9 each blade is pivotally connected to the transverse portion 38a of a U-shaped spring 38, the ends 39a of the spring being pivotally connected to the carrier 4. Because of the position of the ends 39a in relation to the centre of gravity 15, the cutting blades are urged into contact with the shear plate by centrifugal force; magnetic means may be used instead of centrifugal force or springs.
Patent GB-918945-A (GB)
Title: Improvements in or relating to devices for applying staples to belts, conveyor bandsand the like
IPC: G01F3/16
Filed: 1961-12-08
Abstract: 918,945. Belt fastenings. GORO S.A. Dec. 8, 1961 [Dec. 30, 1960], No. 43993/61. Class 80 (1). A device for applying staples to repair tears in belts comprises a guide member for one or more staples connected to an anvil by a member passing through the tear. In one embodiment, Fig. 1, an elongated plate 1 has transverse slots 2 for the guidance of staples 3 and is secured to an anvil plate 8 on the lower side of the belt T by narrow links 4 passing through the tear D and secured by nuts 5. In a second embodiment, Fig. 2, an arm 9 is rockably mounted on a base-plate 11 and carries a staple magazine 16 arranged to feed staples 3 to a staple driving ram 12. The base-plate 11 is provided with a narrow lug 13, passing through the tear, to which lug is detachably secured an anvil 14 having grooves 15 to deform the legs of the staples. In other embodiments the ram and anvil are moved together by pliers-like movements and provision is made for drawing the edges of the tear together by toothed segments pivoted on the base member.
Patent GB-1081209-A (GB)
Title: Method of placing cable jointing chambers or the like into cavities provided therefor in the ground and jointing chamber for carrying the method into effect
Inventor: LEVEN KARL ERIK HARRY
IPC: H02G9/10
Filed: 1965-10-18
Abstract: 1,081,209. Junction chambers. STOCKHOLMS GALVANISERINGSFABRIK A.B. Oct.18, 1965, No. 44091/65. Heading H2E. A cable jointing chamber is formed in a hole in the ground by placing on a reinforced concrete bottom plate 1, one or more wall sections 3 of corrugated sheet-metal, arranging on the top of the wall a sheet metal cover which has or is provided with, reinforcing irons 7 and finally placing concrete on the cover. Tubes 4 in the wall sections provide for the admission of cables, and a tube 6 is adjustably secured in the cover for access purposes. The bottom plate has eye bolts 2 and has a groove to receive the lowermost wall section. A sealing compound 9 is applied to this groove and to the other joins in the structure. A culvert formed of corrugated sheet metal may extend laterally from the wall.
Patent GB-1002505-A (GB)
Title: Suture needle
IPC: A61B17/06
Filed: 1963-11-08
Abstract: 1,002,505. Surgical needles. L. D. KURTZ. Nov. 8, 1963, No. 44107/63. Heading D1G. [Also in Division B3] A curved surgical needle 1 is compressed on its inner and outer surfaces of curvature to forms opposed flattened surfaces 7, 8 providing gripping areas for a clamping needle holder, and is then compressed at right angles thereto to form opposed flattened surfaces (9)10, whereby the initial distance between the surfaces 7, 8 is increased to provide greater resistance to bending at the clamping position.
Patent GB-919272-A (GB)
Title: Electrolytic copper plating baths
IPC: C25D3/38
Filed: 1961-12-13
Abstract: 919,272. Copper-plating baths. DEHYDAG DEUTSCHE HYDRIENWERKE G.m.b.H. Dec. 13, 1961 [Feb. 20, 1961], No. 44559/61. Addition to 872,879. Class 41. Copper-plating baths include as a levelling agent an alkyl or aryl isothiourea which contains a COOH group substituted at the N atom, and in which the S group is neutralized by substitution therein of a group, e.g. alkyl, alkenyl, phenacyl, carbo-alkoxy, or carboxy alkyl. Examples are : S-methyl N.phenyl.N<SP>1</SP>.carboxy. methyl isothiourea, S-carboethoxy N-phenyl- N<SP>l</SP>-carboxy methyl isothiourea, and may be obtained by reacting the isothiourea N-substitution product containing the reactive S atom with halogen compounds, e.g. alkyl halides or halo-carboxylic acids or ketones. Such compounds are also formed by linking two isothiourea molecules by methylene groups via the S atom. These products are used in conjunction with lustring agents, as described in the parent Specification, e.g. N: N-dimethyl dithio-carbamic acid alkyl ester sulphonates. Ductility improving agents, e.g. 1: 3-propylene diamine, may also be added.
Patent GB-1361786-A (GB)
Title: Manufacture of reprographic materials
IPC: G03F7/16
Filed: 1971-09-27
Abstract: 1361786 Vacuum deposited light-sensitive organic materials KALLE AG 27 Sept 1971 [29 Sept 1970] 44944/71 Heading C7F [Also in Division G2] A light-sensitive material is produced by vacuum depositing on a support either (i) a layer of a quinone diazide of formulae wherein X is alkoxy with 1 to 10 carbon atoms, cycloalkoxy with 5 to 12 carbon atoms, anyway with 6 to 15 carbon atoms or NR<SP>11</SP> R<SP>111</SP> wherein R<SP>11</SP> and R<SP>111</SP> are alkyl with 1-10 carbon atoms, cycloalkyl with 5-12 carbon atoms or aryl with 6-14 carbon atoms, or together complete a heterocyclic ring, or one, but not both, may be hydrogen and Y is the same as X but cannot be alkoxy or cycloalkoxy or (ii) a layer of a nitrose formula wherein n is 0 or 1 and R and R<SP>1</SP> are phenyl which may be unsubstituted or substituted by an azide, hydrocyl, alkoxy, alkyl or halogen radical. A resin, such as a novalak, or a dye may be vacuum deposited simultaneously with the light-sensitive compound. The material may be imagewise exposed and developed to produce a printing plate. The support may be a nickel coated glass plate or phenolic resin provided on both sides with a copper skin. The deposition is performed by placing the compound in a dish placed on heatable tungsten wires or under an electrically heated carbon rod. If two compounds are to be vacuum deposited, they are placed in separate dishes, one dish being on the tungsten wires and the other being under the carbon rod.
Patent GB-1104211-A (GB)
Title: Improvements in elastomeric copolymers
IPC: C09J123/16
Filed: 1966-10-07
Abstract: Linear statistical copolymers comprise (1) 30 to 45% of units of the formula <FORM:1104211/C3/1> and derived from a norbornene of the formula <FORM:1104211/C3/2> wherein R1 and R2 are hydrogen or alkyl groups of 1 to 4 carbon atoms, (2) 2 to 15% of unsaturated units derived from a non-conjugated aliphatic diene having at least one double bond which is polymerizable with an anionic catalyst, and (3) the balance of units derived from a straight chain a -olefin having 2 to 4 carbon atoms, and optionally minor amounts of one or more polymerizable a -olefins having 5 to 18 carbon atoms.  The copolymers have an inherent viscosity, measured on an 0.1% solution in tetrachloroethylene at 30 DEG  C., of 0.5 to 2.0. "Statistical copolymers" are defined as those copolymers which are obtained by employing a reaction medium containing at all times all of the monomer species which are to be incorporated in the copolymer.  They are obtained by polymerizing in the presence of the reaction product of a vanadium compound with an organometallic reducing agent, particularly an organoaluminium compound. Ethylene-propylene-1,4-hexadiene terpolymers are also prepared in Example 1 by means of a diisobutylaluminium monochloride/vanadium oxychloride catalyst.  The copolymers of the invention can be cured by conventional sulphur and resin curing techniques and may be compounded with conventional fillers, curing agents, pigments, plasticizers and extending oils in solution in an inert organic solvent and the compositions thus obtained used to coat other elastomers.  The examples relate to ethylene/ 2-norbornene/1,4-hexadiene terpolymers and in Example 1 it is stated that similar results are obtained when the 1,4-hexadiene is replaced by dicyclopentadiene, 5-methylene- or 5-butenyl-norbornene, or cyclooctadiene; the exemplified catalyst is vanadium tris(acetyl-acetonate)/diisobutylaluminium chloride. In Examples 1 and 2 solutions of the copolymer in benzene are prepared; in Examples 3-13 the copolymers are compounded with conventional vulcanizing ingredients and cured; in Examples 15-18, the copolymers are compounded with carbon blacks and in Example 19 with a naphthenic petroleum oil as well.
Patent GB-1287591-A (GB)
Title: A toy building system
IPC: A63H33/08
Filed: 1969-09-11
Abstract: 1287591 Toy building system HANNING KUNSTSTOFFE KG ROBERT HANNING 11 Sept 1969 [11 Sept 1968 7 Feb 1969] 44985/ 69 Heading A6S A toy building system in which the constructional units (1 and 5) are hollow and open ended, and into which tongued and grooved connecting members (3 and 4) can be fitted and locked by means of holding members (4), are grooved along their side faces. The joint may be further secured by means of a key (17). The tongues and grooves are preferably dovetailed and the holding member is preferably in the form of a double dovetail. Additional members (not shown) include angular stiffening members to provide additional strength at corners and to allow for diagonal construction, and flexible plate like members, at least two edges of which are dovetailed to fit said grooves. The end faces of structural members may be so surfaced as to resist relative sideways displacement of two abutting members. The elongated openings (13 and 18) of structural members may be adapted to receive rotatable axles.