baber/WOPTO huggingface dataset:
Patent GB-1295978-A (GB)
IPC: B23Q1/54
Filed: 1970-09-01
Abstract: 1295978 Sine table INSTITUT DR ING REINHARD STRAUMANN AG 1 Sept 1970 [5 Sept 1969] 41782/70 Heading B3B A sine table comprises, in combination, an angle plate 1 having a horizontal leg 1b and a vertical leg 1a; a table 2 including a baseplate 2a; lockable mounting means, e.g. a bolt 3 and nut, mounting said table 2 on said vertical leg la for tilting in either direction about a horizontal axis and operable to lock said table in any selected orientation about said horizontal axis; and pin means 9 disengagingly insertable in apertures in said vertical leg to serve as reference and support in conjunction with gauge blocks 10 for setting said table in the adjusted angular position. The parts of the sine device may be dismantled and used independently, e.g. as work fixture (Figs. 6 and 7, not shown). Angles up to 90 can be set accurately, e.g. by using a pin 9 vertically below the tilt axis through bolt 3. Graduations 5 may be provided, and a circular row of holes 8 may be provided in either the vertical part 2b of the table 2 or in the vertical leg 1a, to co-operate with a pin, to set the table 2 at required angles. A sine table 12 may be placed on top of the base-plate 2a to produce compound angles; alternatively the tiltable part only of a sine table may be attached to hinge lugs on the base-plate 2a. A vice 13 can be attached to a second sine table. For supporting heavy loads the free end of bolt 3 may be supported by a leg (22) (Fig. 5, not shown).
Patent GB-1307915-A (GB)
Title: Dough proofing apparatus
IPC: A21B2/00
Filed: 1970-04-20
Abstract: 1307915 Dough proving D C A FOOD INDUSTRIES Inc 20 April 1970 18707/70 Heading A4D [Also in Division H5] A dough-proving apparatus and process comprises exposing a yeast-leavened dough piece to a high frequency electric field and substantially discontinuing this exposure to allow the temperatures in the piece to equalize prior to a second period of exposure. The temperature of the piece is raised by about 10‹F. to between 90 and 120‹F. in a period of less than 3 minutes and the exposure is discontinued for at least 20 seconds after which the dough temperature is raised to between 100‹F. and 130‹F. in the second period. As shown, a generally rectangular chamber 11 is illuminated by an h.f. voltage generator 22, a plurality of rotatable disturbers 24 being within the chamber. An endless conveyer 32 passes through slots 19, 18 and dough pieces P are placed on the conveyer and pass from right to left through a region A where they receive the first exposure, into a region B where they are shielded by a screen tunnel 29 and then pass into a region C for the second exposure. The speed of the conveyer and energy output of the source as well as the length of the tunnel are adjustable.
Patent GB-1325789-A (GB)
Title: Solutions for forming photosensitive resists
IPC: G03F7/038
Filed: 1971-08-20
Abstract: 1325789 Photosensitive esterified polyvinyl alcohol POWERS CHEMCO Inc 20 Aug 1971 39214/71 Heading C3P [Also in Division G2] A photoresist-forming solution comprises a volatile organic solvent and polyvinylalcohol which has been esterified with a carboxylic acid containing a furan ring which ring may optionally form part of a fused-ring system, the average molecular weight of the polyvinyl alcohol from which the ester is derived or to which it is hydrolysable, being 14,000 to 115,000. Carboxylic acids specified are 2-furoic acid, 5 - bromo - 2 - furoic acid, furanacrylic acid, 2 - alphamethyl - furanacrylic acid and 2- coumarillic acid, and 2,4,5 - trimethyl - 3- furoic acid. A mixture, for example of 2-furoate and 2-furanacrylate groups may also be introduced into the polyvinylalcohol. In the examples polyvinyl alcohol is esterified with the acid chlorides of the above acids. The products are dissolved in 1,2-dioxane (or methyl ethyl ketone or ethylene dichloride) and sensitized with benzanthracene-7,12-dione (or benzoylperoxide), and coated on to a support to produce light sensitive materials which are exposed to for example, U.V. light in an imagewise manner to cross-link the polymer.
Patent GB-1327085-A (GB)
Title: Electron scattering prevention film
IPC: H01J29/32
Filed: 1970-08-10
Abstract: 1327085 Coating by vapour deposition NIPPON VICTOR K K 10 Aug 1970 38473/70 Heading C7F [Also in Division H1] In a colour television tube of the type wherein scattering of the incident electrons by the screen is reduced by coating the phosphor layer with a layer of aluminium or the like and with a layer of material of lower average atomic number which prevents scattering, an intermediate layer of mixed composition is provided between the aluminium and the outer layer. The outer layer is preferably boron carbide, but other materials mentioned are boron, carbon, lithium fluoride and lithium carbonate. The intermediate layer is preferably of graded composition varying from 100% Al at its main surface to 100% B 4  C at its outer surface. If the outer layer is 3000Š thick, the inner layer may be 1000-1500Š thick and the intermediate layer 500-1000Š thick. The phosphor-coated screen 17, Fig.5, is mounted in an evacuated bell jar opposite a crucible 55 containing powdered boron carbide and a piece of aluminium. The materials are heated by electron bombardment from a surrounding filament 56, and for a preliminary period of 2-3 minutes the shutter 59 is closed and the beam is operated at 5 KV and 50 mA to out-gas the materials and to melt the aluminium which permeates the boron carbide. The shutter is then opened and the beam voltage raised from 5 to 8 KV over a period of 5 minutes during which the aluminium layer is evaporated on to the screen to a thickness of 1500Š; for a further 5 minutes the composite layer is formed to a thickness of 500A and a further heating produces the boron carbide layer of 3000A thickness. A grid 60 prevents electrons or sputtered particles from reaching the screen.
Patent GB-1327794-A (GB)
Title: Heat pipes
IPC: H05K7/20
Filed: 1971-04-19
Abstract: 1327794 Heat pipes MARCONI CO Ltd 19 April 1971 [11 June 1970] 28432/70 Heading F4U In a heat pipe having a capillary wick structure consisting of woven wick material 15 formed on a fine mesh screen 16 of copper, and leaf springs 17 which urge the wick material towards the wall of the heat pipe, at least part of the wall is made of conformable material, preferably a polyester material. In operation, copper blocks 14 cause the vapour to condense to form liquid which is redistributed by the capillary action of the wick material. The heat pipes are used to cool printed circuit boards 1-6 having microminiature circuit packages 7. In other embodiments, the screen 16 may be strengthened and disposed on either side of the conformable walls.
Patent GB-1332820-A (GB)
Title: Vessel for transporting liquefied gas including insulation system
IPC: B63B25/16
Filed: 1970-12-17
Abstract: 1332820 Heat insulated gas storage containers ESSO RESEARCH & ENG CO 17 Dec 1970 59951/70 Heading F4P [Also in Division B7] A liquefied gas carrying tanker has a hold 41 in which self-supporting tank 37 is positioned. A first thermal insulation 40 is fixed to the exterior walls of the tank and second insulation 51 independent of and spaced from the first insulation is located on the interior walls 50, 52 of the hold. The second insulation serves as a secondary barrier which is protected from the extremes of cryogenic temperatures by the insulating effect of the first insulation.
Patent GB-1336293-A (GB)
Title: Tooth-pastes
IPC: A61K8/42
Filed: 1971-04-19
Abstract: 1336293 Toothpastes UNILEVER Ltd 19 April 1971 [17 April 1970] 18444/70 Heading A5B A toothpaste containing glycerine, water and chloroform having a reduced tendency to corrode aluminium comprises as corrosion inhibitor biuret, gelatine or benzoic acid or a watersoluble salt of benzoic acid.
Patent GB-1340809-A (GB)
Title: Surface-grinding machine
IPC: B23Q15/10
Filed: 1972-07-06
Abstract: 1340809 Grinding ODESSKOE SPETSIALNOE KONSTRUKTORSKOE BJURO SPETSIALNYKH STANKOV 6 July 1972 31569/72 Heading B3D A surface grinding machine comprises a horizontal spindle 4 for a grinding wheel 5, a table 7 for carrying workpieces and rotatable about a vertical axis by a drive consisting of a variablespeed D.C. motor 8, the table being mounted on a carriage 6, a drive 21 for horizontal longitudinal feed of the carriage, an attachment 34 for changing the speed of the table and the rate of longitudinal feed of the carriage, a selsyn 9 in the control circuit of the motor having an armature which interacts with the attachment and sets, jointly with the attachment, a hyperbolic law of rotation of the shaft 11 of the motor to maintain a constant velocity of the table at the points of its contact with the grinding wheel, the table and carriage drives being linked so that a change in the speed of the motor shaft effects a proportional change in the rate of feed of the carriage. The spindle 4 of the grinding wheel is mounted in a head 3 in a column 2 on a bed 1. The carriage 6 for the table 7 is reciprocatable along guides on the bed by a rod 22 of an hydraulic cylinder 21. The D.C. motor 8 is mounted on the bed and has a pulley 11 driving a belt 16 in a pulley 14 of a speed reducer 15, in turn, driving a belt 20 for rotating the table 7. The belt 16 also runs over pulleys 18 mounted at the ends of arms 17 mounted on pivots coaxial with the pulleys 11, 14 so as to accommodate the movement of the table. The control circuit of the motor 8 includes the selsyn 9 which has an armature 10 rotatable by a gear 36 engaging a rack 35 movable by a cam 34 during movement of the carriage 6 so that the voltage supplied to the motor varies hyperbolically in accordance with the radius of the contact point of the grinding wheel with a workpiece on the table 7. The cylinder 21 is controlled by a reversing valve 26 in an hydraulic circuit having a pump 24, pressure regulator 27 and adjustable restrictor 29. The regulator is also connected by a pipe 44 to a metering gear pump 31 driven by a belt 33 from the motor 8 and in a circuit having a regulator 28 and constant area flow restrictor 30. During movement of the carriage 6 by the cylinder 21, the cam 34 causes the selsyn to vary the speed of the motor 8 rotating the table, the motor, in turn, actuating the gear pump 31 to vary the pressure in the hydraulic circuit to thereby vary the rate of movement of the carriage so that grinding is effected at a constant velocity at all points of contact of the grinding wheel with the work carried by the table.
Patent GB-1346185-A (GB)
Title: Rotary internal combustion  engine
IPC: F02B57/08
Filed: 1971-03-20
Abstract: 1346185 Rotary engines D V PETTY 20 March 1971 7637/71 Heading F1B A rotary I. C. engine comprises a cylinder block 20 rotatably mounted in a housing shell 10 closed by end plates having eccentrically disposed bearings 19, Fig. 2 a rotor mounted with its axis spaced from the housing axis comprising a multi-faced core the faces of which have grooves 17a each engaged by a slidable groove-follower carried by pistons which slide in piston sleeves in the cylinder block. Fuel is fed to a combustion chamber 15 through an adjustable idling valve 97 and gas from a carburetter is fed into a conduit 41 through a gas injector 39. A central oil duct 50 feeds lubricant to the grooves 17a and the cylinder sleeves 33a. The sleeves 33a which are freely slideable under centrifugal force are counterbalanced by weights 70a, and 70a'.
Patent GB-1347226-A (GB)
Title: Dental anchor
IPC: A61C5/35
Filed: 1972-06-06
Abstract: 1347226 Dental pins B WEISSMAN 6 June 1972 26341/72 Heading A5R A dental anchor comprises two self-tapping threaded portions 38 to be anchored in a tooth stump, and is weakened at two peripheral grooves 39, 41, the groove 41 being positioned between the two portions 38, and the groove 39 between one of the portions 38 and a portion 42 shaped to co-operate with a dental chuck attachment 50, Fig. 8. On inserting the anchor into a preformed channel (28), Fig. 2 (not shown), of a tooth the anchor is rotated by the chuck until it reaches the bottom of the channel, when further rotation causes it to fracture at the groove 41 which has a smaller diameter than the groove 39, so leaving a threaded portion 38 in the channel. The remaining portion 38 can similarly be inserted into another channel (28), the anchor fracturing at the groove 39, Figs. 3 and 4 (not shown). The portion 42 consists of a cylindrical part 49 for guiding it into the chuck 50, and two flat faces 46 which co-operate with prongs 58 of the chuck to transfer torque from the chuck to the anchor. The chuck is connected to a dental power tool.
Patent GB-1347966-A (GB)
Title: Preparation of graft copolymers from vinyl chloride and ethylene/ vinyl acetate copolymers
IPC: D21H19/56
Filed: 1971-04-19
Abstract: 1347966 Graft polymers of vinyl chloride and ethylene/vinyl acetate copolymer B P CHEMICALS Ltd 19 April 1971 [5 Feb 1970] 5575/70 Heading C3G A film forming graft copolymer latex is made by polymerizing vinyl chloride as the sole additional monomer in the presence of a vinyl acetate/ethylene copolymer having a polymerized ethylene content of 5-45% by wt. as the sole copolymer (i.e. prepared by copolymerization of two or more monomers) under emulsion polymerization conditions with a water soluble polymerization initiator, the amount of vinyl chloride polymerized being such that the latex will form coherent films at 30‹ C. or below. The copolymer latices may contain unpolymerized vinyl acetate. The vinyl chloride may be added as a single charge or continuously during the polymerization. In the examples the polymerization mixture contained, besides the monomer and copolymer, a nonyl phenol/ethylene oxide condensate, sodium dodecyl benzene sulphonate, polyvinyl alcohol, water, ammonium persulphate and sodium metabisulphate.
Patent GB-1348519-A (GB)
Title: Apparatus for forming and ejecting stacks of articles
IPC: B65H31/32
Filed: 1972-11-27
Abstract: 1348519 Unpacking devices MASSON SCOTT THRISSELL ENG Ltd 27 Nov 1972 [1 Dec 1971] 55685/71 Headings B8C and B8A Apparatus for ejecting a stack 15 of mail or like flat articles from a magazine 10 comprises a vertically movable platform 14 upon which the stack is built up to a pre-determined height, the platform descending as the stack grows until a switch SW1 is actuated whereupon pusher 25 moves across to eject a stack of a height decided by the spring-loaded wall 11. Platform 14 is mounted on blocks 18 slidable on rods 16 against counterbalancing springs 20, and has interlock rollers 43 which engage pusher 25 to prevent ejection until the platform reaches its lowest position. Pusher 25 is mounted on block 26 slidable on rod 27 and has further interlock rollers 44 engaging platform 14 during ejection to prevent the return upward stroke of the platform before ejection is complete. Pusher 25 and platform 14 are controlled by a tension cord 33 leading from a spring-return bobbin 34, which may be clutched to driven shaft 35, over pulleys 36, 38, 39, 40 to block 26. Switch SW1 energizes the clutch to tension the cord whereupon pusher 25 is drawn across the magazine against light spring 41 to engage switch SW2 to disengage the clutch. Pusher 25 and platform 14 then return to their initial positions under the action of springs 20 and 41. Cord 33 operates to pull down platform 14 for the ejection of incomplete stacks when switch SW1 is by-passed by a manual override.
Patent GB-1352101-A (GB)
Title: Sequential initiation of a series of operations
IPC: F42D1/055
Filed: 1972-03-28
Abstract: 1352101 Blasting EXEC (PTY) Ltd and AE & CI Ltd 28 March 1972 14584/72 Heading E1F [Also in Division H1] A method of sequentially initiating a series of operations, for example, detonation of explosive charges in the blasting of working faces in mines, comprises locating a series of initiators at spaced intervals along a flexible conduit, and moving an actuator through the conduit sequentially to actuate the initiators. As shown, electrical contacts 12, connected to fuse heads 24 of detonators 26, are inserted in a plastics tube 10 and a conductive brush 14 is pulled at controllable speed by motor 20 to close circuits in sequence (see Division H1) but it is envisaged that the actuator may be a movable ignitor and the initiators blasting fuses. In the latter case the actuator may be a suitable chemical compound, ignited before being pulled through the conduit, or it may be an electrical heating element.
Patent GB-1353743-A (GB)
Title: Organosilicon-modified polymers
IPC: C08J9/00
Filed: 1970-09-07
Abstract: 1353743 Modified polybutadienes; organosilyl - modified polyethers; polyurethane foams IMPERIAL CHEMICAL INDUSTRIES Ltd 7 Sept 1971 [7 Sept 1970] 42761/70 Addition to 1090328 Headings C3P and C3R Modified polybutadienes contain units of the general formula in which each R is a hydrocarbyl or substituted hydrocarbyl group or a group R<SP>v</SP> 3 Si(OSiR<SP>v</SP> 2 ) x O wherein R<SP>v</SP> is a hydrocarbyl or substituted hydrocarbyl group; R<SP>1</SP> is an organic group free from olefinic unsaturation and of valency (z+1); R<SP>11</SP> is a hydrocarbyl or substituted hydrocarbyl group, an acyl group, a carbamoyl group or hydrogen; n is 2, 3 or 4; x is 0 or an integer up to 10; y is an integer from 2-100; and z is an integer from 1-5. They are made by reacting polybutadiene containing 1,2-linkages with a compound of formula A variety of other units may also be present in the chain. In examples, (1) [H(CH 3 ) 2 Si] 2 O is reacted with a compound of formula the product of this is reacted with predominantly - 1,2 - polybutadiene to form a modified polymer as defined above, and this is then further reacted with 1,1,1,3,5,5,5-heptamethyltrisiloxane; (2) as for (1) but without the last step; (3) as for (1) except that C 6 H 5 (CH 3 )SiH 2  is used in the first step in place of [H(CH 3 ) 2 Si] 2 O; and (4) C 6 H 5 (CH 3 )SiH 2  is reacted with and the product is reacted with predominantly- 1,2-polybutadiene. In all these reactions the catalyst used is transdichloro-bis(diethylsulphide)platinum-II, and the final products are used as foam stabilizers in the otherwise conventional manufacture of polyurethane foam.
Patent GB-1354248-A (GB)
Title: Convolute tube winding
IPC: B31C1/02
Filed: 1972-05-30
Abstract: 1354248 Making tubes CLEVEPAK CORP 30 May 1972] 25244/72 Heading F2P Apparatus for convolutely winding a sheet S e.g. of paper into a tubular shape which is non- circular in cross-section comprises a winding mandrel 12 and a parallel, co-operating pressure roll 14 mounted for rotation in such a way as to permit relative movement between the respective axes so as to adjust the distance between them and having driving mechanism for rotating the mandrel and the pressure roller in opposite directions, the cross-section of the pressure roller being so related to that of the mandrel that when rotated in contact with one another in a controlled time relation, the sum of the distances from the axis of rotation of each to the line of contact between their surfaces remains constant. The pressure roll 14 is carried in pivoted arms 48, 49 loaded by hydraulic cylinders 62, 67. The mandrel is driven from motor 34 through gearbox 33 and bevels 31, 30 and the pressure roll is also driven from gear-box 33 through shaft 37 and belt 71. The mandrel and pressure roll can be driven at the same angular speed or alternately (Fig. 9) by incorporating a phase changer (e.g. a differential, Fig. 12) into the drive to the pressure roll the angular speed of the latter can be varied so that the surface speeds of the mandrel and the roll at the line of contact are substantially equal at all times. The sheet S is fed over a vacuum table 80, 91, 80a so as to tension the sheet and the mandrel 12 is provided with a releasable clamping jaw 22 to grip the leading edge of the sheet. Adhesive may be applied to the surface of the sheet, e.g. by a spray bar (117) (Fig. 9, not shown) as it approaches the mandrel. The arms may be raised by the hydraulic cylinder 67 to allow removal of the formed tube from the mandrel and the mandrel may be of a length to push a formed tube to one end for drying whilst another tube is being wound on the other end.
Patent GB-1355624-A (GB)
Title: Method for producing polyesterether film
IPC: C08G63/672
Filed: 1972-01-27
Abstract: 1355624 Polyethylene - 1,2 - diphenoxyethane - p,p<SP>1</SP> - dicarboxylate films ASAHI KASEI KOGYO KK 27 Jan 1972 3853/72 Heading B5B [Also in Division C3] Films or tapes of polyethylene-1,2-diphenoxyethane - p,p<SP>1</SP> - dicarboxylate are prepared by extruding a melt into a zone heated to 60-150‹ C. to produce an unstretched film having a crystallization degree of 7-35%. The film is then stretched to from 2À0 to 5À5 times its original length. The polymer must contain at least 80% by weight of repeating units of the formula and must have been prepared by reacting ethylene glycol with 1,2-di(paraalkoxycarbonylphenoxy) ethane using a barium salt as a transesterification catalyst and afterwards polycondensing the product under the catalytic influence of a germanium and/or antimony compound.
Patent GB-1355777-A (GB)
Title: Hydrostatic steering means
IPC: B62D5/097
Filed: 1972-08-21
Abstract: 1355777 Power assisted steering HYDRAULIK NORD "PAUL SASNOWSKI" BETRIEB DES VEB KOMBINAT ORSTAHYDRAULIK VEB 21 Aug 1972 38839/72 Heading B7H In a hydrostatic power assisted steering mechanism of the type including a rotary metering or control pump actuated by the steering wheel, the steering ratio is automatically increased in the event of a servo pump failure by a change over valve system which reduces the effective capacity of the metering pump. In a first embodiment (Figs. 5, 6) the metering pump includes a rotor 25 which is movable in chambers 23, each chamber 23 being connected by a passage 9 to a commutator system 15, 16. Each chamber 23 also has an outlet passage 24 which is normally closed by a valve member 27, the valve member 27 being held against the passages 24 by fluid under pressure supplied from the servo pump. Thus when the servo pump is operative the metering pump acts at its full capacity. In the event of a servo pump failure the valve member 27 no longer closes the passages 24 and fluid can escape from the chamber 23 when the rotor 25 does not cover the passages 24 (see Fig. 6), thus reducing the effective capacity of the metering pump. The control passages of the commutator are provided with non-return check valves (not shown) so that there is no direct connection between the chambers 23 in which the outlet 24 is uncovered by rotor 25 and the chambers in which the outlets 24 are covered by rotor 25. Alternatively the non-return check valves may be provided in the passage 9, the check valves being coupled to the change over valve system so that when the change over valve system closes the outlets 24 the check valves are held open and when the change over valve system opens the outlets 24 the check valves close the passages 9. In a second embodiment (Fig. 14) the metering pump has two sets of chambers 23, 23<SP>1</SP> and two rotors 25, 25<SP>1</SP> which are coupled by a member 86. When the servo pump is operative the pressure fluid supply acts on a piston 97 so that sealing member 94 closes an outlet passage 90 from the chambers 23<SP>1</SP> and connecting pin 91 holds a sealing member 108 in its open position, thus allowing both metering pumps to be operative. In the event of a servo pump failure a spring 87 shifts the sealing member 108 to close passage 109 and shifts sealing member 94 to open outlet passage 90. Thus only chambers 23 and rotor 25 are operative. In a third embodiment (Fig. 16) some of the chambers 23 are provided with outlet passages 134 which are closed by sealing members 128 when the servo-pump is operative. In the event of a servo-pump failure the outlets 134 are opened, thus rendering those chambers 23 provided with outlets 134 inoperative to reduce the capacity of the metering pump. The sealing members 128 are connected by pins 135 to check valves 127 to close the passages 9 when the outlets 134 are opened.