baber/WOPTO huggingface dataset:
Patent GB-1023305-A (GB)
Title: Apparatus for welding employing controllable power pulses
IPC: B23K11/25
Filed: 1962-11-13
Abstract: 1,023,305. Welding by pressure. GENERAL ELECTRIC CO. Nov. 13, 1962 [Nov. 28, 1961 (2)], No. 42888/62. Heading B3R. [Also in Division H2] A method of resistance welding comprises providing the welding energy in short pulses and varying the direction amplitude and/or spacing between the pulses to unite the materials without melting them. A capacitor 12, Fig. 4 (not shown), is changed from a D.C. supply through an inductor 13, diode 14 and transformer 4. A signal at terminals 15 renders a thyristor 10 conductive energizing the transformer 4 and a second signal at terminals 16 discharges capacitor 12 in an oscillatory circuit in the forward half cycle through an inductor 13 and rectifier 11, and in the reverse half cycle through inductor 13 and diodes 14, 17 thus extinguishing thyristors 10, 11. A Zener diode 24, resistor 25 and a diode 26 limit the transformer reset flux preventing excessive voltage across the thyristors. A suitable timing circuit for controlling thyristors 10, 11 is described in the Specification. A stepped wave form may be obtained by connecting several circuit outputs in parallel and connecting the inputs to differing voltages and polarities. Resistance spot welding without cast or fused metal in the weld, percussive welding, ultrasonic welding or solid state welding with diffusion may be effected. A different metal may be provided at the interface. Cross wires, lead wires, pins to lamps or wires to semi-conductor devices may be welded. Silver, aluminium, copper, nickel, molybdenum, iron, brass may be welded.
Patent GB-1515558-A (GB)
Title: Highly-pigmentable liquid coating agent
IPC: C09D5/46
Filed: 1975-10-22
Abstract: 1515558 Liquid coating compositions CHEMISCHE WERKE HULS AG 22 Oct 1975 [6 Dec 1974] 43296/75 Heading C3R A liquid coating composition containing less than 25% by weight of solvent contains, as the binder (A) 10 to 45% by weight of an aminoplast or precondensate thereof and (B) 55-90% by weight of a polyester of average molecular weight not more than 1000 and derived from a mixture of ethylene glycol and 1,2-propanediol in a molar ratio of 1 : 2 to 9 : 1 and a dicarboxylic acid component comprising at least 80 mole per cent of hexahydroterephthalic acid. The coating compositions may comtain conventional additives and may be highly pigmented, e.g. with titanium dioxide. Additional reactants used in preparing the polyesters in the examples are diethylene glycol, glycerol, adipic acid and phthalic anhydride.
Patent GB-1409548-A (GB)
Title: Method of operating a guide roll for filaments
IPC: B65H57/14
Filed: 1972-09-19
Abstract: 1409548 Bearings TEIJIN Ltd 19 Sept 1972 [7 April 1972] 43362/72 Heading F2A [Also in Division D1] An assembly in which a roller 1 (e.g. a roller used in draw twisting or winding machines) is journalled on a hollow shaft 2 by a film of fluid produced by feeding compressed fluid from the hollow interior of the shaft through ducts 6 in the shaft opening into the clearance between the shaft and roller, has fluid fed to the interior of the shaft at such a pressure that where n is the total number of ducts leading from the hollow interior of the shaft to the clearance, n being at least 6; d is the diameter of the ducts (mm.); P s  is the absolute pressure of fluid fed to the assembly (kg. cm.<SP>-2</SP>), P s  being greater than 10 Î 10<SP>-3</SP> kg. cm.<SP>-2</SP>; D is the external diameter of the shaft (mm.); L is the sum of the distances (in mm.) from the ducts to the point at which fluid escapes, measured in the axial direction, excluding distances between adjacent ducts between which there is no outlet. Recesses 10 may be provided in the shaft between the supply ducts, the recess being connected via axial passages 11 with the atmosphere to provide further fluid outlets. Radial flanges 7 may be provided on the shaft at each end of the roller, there being outlet passages 12 from the clearance through the flanges.
Patent GB-1002965-A (GB)
Title: Improvements in electric circuit breakers
IPC: H01H71/52
Filed: 1963-11-05
Abstract: 1,002,965. Automatic circuit breakers. GENERAL ELECTRIC CO. Nov. 5, 1963 [Nov. 30, 1962], No. 43607/63. Heading H2B. The pivoted contact member 15 of a circuit breaker is manually actuable by a pivoted handle 39 acting through a snap action mechanism consisting of a cam follower roller 26, linked to the handle by an overcentre tension spring 40 and to the contact member by a link 24, and movable between two stable positions on a cam surface 34 of a latched member 30. Upon overload in any phase of the three-phase breaker bimetals 60 bend to tilt a common trip bar 54 through adjusting screw 57 and so to withdraw a first latch 53 permitting a member 50 to pivot about 49; this moves a roller latch 51 permitting a second member 33 to pivot about 45 to release the latched member 30 which pivots anticlockwise allowing the follower 26 to rise and thus all of the moving contacts, which are mounted on a common pivoted bar 21, to open; the spring 40 is then in an unstable position and moves the handle 39 until it is arrested in a " tripped " position by a portion 38 of the member 30. The latch mechanism is reset by moving handle 39 to the " off " position. As shown, the " on " position of cam follower 26 is governed by the link 24 engaging a part 15B of the contact arm 15 but in a modification (Fig. 6, not shown) a stop is formed on the latched member 30.
Patent GB-1188718-A (GB)
Title: Improvements relating to Pulse Generating Circuits
Inventor: LETHEREN JOHN REDSHAW
IPC: H03K5/135
Filed: 1967-09-25
Abstract: 1,188,718. Pulse generating circuits; phase detection. BRITISH AIRCRAFT CORP. Ltd. 24 Dec., 1968 [25 Sept., 1967], No. 43618/67. Headings H3A and H3T. A circuit for deriving a pulse having a fixed time relationship with a reference sine wave comprises first and second paths, 3, 4 respectively, each including means for altering the phase of the reference sine wave, the magnitude of the alteration being different for the two paths, and a coincidence gate 5 responsive to the altered waveforms to generate a signal spanning any chosen part of the reference sine wave. As described, the circuits 3, 4 respectively comprise phase retarding and advancing circuits, and the coincidence gate comprises diodes D1, D2 and transistor TR1. The arrangement is used to provide reference pulses for a phase detector comprising field-effect transistor FET, being applied to the gate while the signal whose phase is to be determined is applied from transformer T1 to the source-drain path. A storage capacitor C1, smoothing capacitor C2 and roll-off capacitor C3 are provided.
Patent GB-1483921-A (GB)
Title: Protection case
IPC: B65D85/30
Filed: 1974-10-10
Abstract: 1483921 Protection case MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 Oct 1974 [12 Oct 1973 (3) 15 Oct 1973 (2)] 43962/74 Heading B8K A protection case containing a cassette-type tape recorder 1 having a speaker 2 and operating buttons 4, is made of waterproof sheet material, e.g. PVC, approximately conforming in shape to that of the recorder and has an opening through which the recorder has been inserted. The case has elements 10, 11 capable of tightly closing the opening, e.g. ribs 6a, 6b and grooves 8a, 8b, Fig. 2, a plurality of flexible bellows formed above the buttons 4, transparent parts in positions corresponding to the positions of parts on the recorder essential for its operation, a wall in opposed relation and spaced from the speaker 2, a further opening 22, Fig. 10, positioned for inserting a cassette 44 into the recorder and a lid 23 for the opening 22, the opening and lid being airtightly fastened by plastics closure elements 24a, 24b. The speaker 2 may be spaced from the case wall by a rib 12, Fig. 2, or by thinning the wall in this area.
Patent GB-1405486-A (GB)
Title: Low inductance arc discharge switches
IPC: H01T2/02
Filed: 1972-09-22
Abstract: 1405486 Spark gaps UNITED KINGDOM ATOMIC ENERGY AUTHORITY 8 Aug 1973 [22 Sept 1972] 44090/72 Heading H1D A low inductance arc discharge switch comprises an enclosure 5, 6, first and second main electrodes 1 and 2 mounted within the enclosure to define a spark gap 4, an insulator 3 situated between the electrodes, and parts 10 formed in the main electrodes in positions such that subsequent to operation of the switch, a substantially uniform flow of a purging gas can be directed through the spark gap and over the surface of the insulator to remove products arising from the operation of the switch. The assembly of annular electrodes 1 and 2, insulator 3 and insulating covers 5 and 6 is clamped together by a bolt 7 having a central bore 8 and radial holes 9 for admitting the purging gas which after passing through the ports 10 is exhausted through ports 11 in the covers 5 and 6. The main electrodes 1 and 2 have a lobate cross-section to promote a uniform flow of gas. An auxiliary electrode 12 is mounted on the bolt 7. In an alternative embodiment (Fig. 2, not shown) the bore 8 and holes 9 in the bolt 7 are omitted and the gas is admitted through the upper port 11.
Patent GB-1459959-A (GB)
Title: Process for printing a textile material with reactive dyestuffs
IPC: B41F9/00
Filed: 1975-10-27
Abstract: 1459959 Printing with reactive dyes HOECHST AG 27 Oct 1975 [26 Oct 1974 6 Sept 1975] 44192/75 Headings D1B and D1L Textile materials e.g. mercerised cellulose are printed with reactive-dyes, the alkali necessary for dye fixation being applied by a doctor. Screen printing and roller printing machines may be used the alkali being applied via a perforated tube positioned in front of the doctor with respect to the direction of movement of the material. Fixation may be by cold dwelling or steaming. In Figs. 1 and 2 material web 3 is fed to a printing roller machine having printing cylinder 1 and printing rolls 2. The material passes around the cylinder on top of a backcloth 7 and is transported by rolls 6 at one of which the doctor 5 is provided, aqueous alkali being supplied by perforated distribution tube 4.
Patent GB-996844-A (GB)
Title: Catalysts and process for their preparation
IPC: B01J23/89
Filed: 1963-11-11
Abstract: Oxidation catalysts comprise a support having a surface area of at least 100 sq.m./gm. carrying 4-16% CoO, 1-20% Cr2O3 and 0,01-0,1% Pd. Specified supports are a -Al2O3, SiO2-Al2O3, SiO2-MgO, SiO2-Al2O3-MgO and ZrO2, in nodular form, e.g. 3-10 mesh.  Comparative examples are given.
Patent GB-1391497-A (GB)
Title: Notching machines
IPC: B23D15/12
Filed: 1972-09-27
Abstract: 1391497 Notching machines S G DAVEY 30 April 1973 [27 Sept 1972] 44524/72 Heading B3W A notching machine comprises a work-table 10, 11, a die plate (50), Fig. 4 (not shown), secured to the table and carrying a lower notching blade (53) a ram 20 carrying an upper notching blade 26, the ram being supported and guided for rectilinear movement by a housing 30 secured to, and extending downwardly from, the table, and drive means for driving the ram downwardly to effect shearing including a drive transmission shaft 37 extending transversely, and being journalled in members 34, of the housing. The housing comprises four plates 31 welded alternate edge to face and having internal shims 32 adjustably mounted at 33. Plates 34 welded to plates 31. The shaft 37 is driven by electric motor 42 through chain and sprocket 40 and is connected to a shaft 39 journalled in the lower end of the ram by an eccentric 38. The ram is of square section with a head 23 including a triangular portion (24) in which a replaceable blade holder (25) is secured. The two portions of the upper blade are upwardly inclined towards their junctions, Fig. 1, and the die plate (50) is adjustable by screws 58-60 to align the complementary lower blade portions with the edges 13A of the aperture 13 through which the ram passes. Graduated rules (55) may be mounted on the die plate parallel to the shearing edges. In operation, the motor 42 is rotated through one revolution, controlled by a microswitch 70 operated by a cam 71 on shaft 37, causing a shearing and return stroke of the ram, the loading between the blades is absorbed by the plates 14.
Patent GB-1042049-A (GB)
Title: Treatment of plastics surfaces
IPC: B41F23/00
Filed: 1963-11-12
Abstract: 1,042,049. Printing processes. IMPERIAL CHEMICAL INDUSTRIES Ltd. (Canadian Industries Ltd.). Nov. 4, 1964 [Nov. 12, 1963], No. 44619/63. Heading B6C. A plastics, e.g. polythene, web 1 in single thickness or flattened tubular film form is subjected to a diffuse direct current corona discharge prior to printing such discharge being effected between spaced electrodes 7 and 9, the latter being at the lower potential and following the former in the direction of movement of the web. The web 1 passes over an earthed conductive roller 2 covered with an insulant 3- which may be a polyethylene terephthalate film -whilst being subjected to the discharge and is guided by rollers 5, 6. In a modified treatment apparatus the web passes nearly all round the roller 2, the electrodes 7 and 9 are diametrically opposed and an additional electrode, which is earthed, is placed before the electrode 7 in the direction of web travel. A further earthed electrode may be placed adjacent the insulated surface of the roller at a position beyond the line at which the treated web leaves the roller. A radio-active source of ionization may be employed to ionize the atmosphere between the electrodes.
Patent GB-1390846-A (GB)
Title: Scintillation scanner
IPC: G01T1/166
Filed: 1972-06-26
Abstract: 1390846 Scintillation scanner PICKER CORP 26 June 1972 [25 June 1971] 44638/74 Divided out of 1390845 Heading H4F The subject matter of this Specification is identical with that described in Specification 1,390,845, but the claims are concerned with scintillation recording apparatus including a printing ribbon with different longitudinal colour bands, means for positioning the carriage carrying the ribbon in response to the detected radiation intensity, and means for driving a printing stylus into engagement with the ribbon, the driving means being such that there is a predetermined minimum interval between the application of successive driving pulses to the printing stylus.
Patent GB-1076846-A (GB)
Title: Process of making up highly reduced baked briquette from finely divided iron ore
IPC: C22B1/24
Filed: 1963-11-13
Abstract: In a process for producing highly reduced burned briquette for the eventual production of iron, a mixture of finely divided iron ore and cellulosic vegetable material is reduced by a preliminary low temperature carbonization at 500 DEG  -600 DEG C., the product therefrom is moulded with a binding agent into a green briquette which is baked at a higher temperature, e.g. 1100 DEG  -1150 DEG C., to obtain metallic iron in the baked briquette.  The binding agent may be swelled coal formed by swelling a mixture of sawdust and virgin tar at a temperature of 300 DEG C.  The green briquette may be formed by a compressive pressure exceeding 20 kg/cm2 into volumetric size of 18-200 c.c. Pig iron is obtained by melting the product in a shaft furnace or electric arc furnace.ALSO:In a process for producing highly reduced burned briquette for the eventual production of iron, a mixture of finely-divided iron ore and cellulosic vegetable material is reduced by a preliminary low temperature carbonization at 500-600 DEG  C., the product therefrom is moulded with a binding agent into a green briquette which is baked at a higher temperature, e.g. 1100-1150 DEG  C., to obtain metallic iron in the baked briquette.  The binding agent may be swelled coal formed by swelling a mixture of sawdust and virgin tar at a temperature of 300 DEG  C. The green briquette may be formed by a compressive pressure exceeding 20 kg/cm.2 into volumetric size of 18-200 c.c.
Patent GB-1313740-A (GB)
Title: Preparation of diolefins from tertiary and secondary alkyl halides containing only four carbon atoms in the main chain
Inventor: FRECH KENNETH J
IPC: C07C1/30
Filed: 1970-09-23
Abstract: 1313740 Diolefins from alkyl halides GOODYEAR TIRE & RUBBER CO 23 Sept 1970 [17 Oct 1969] 45237/70 Heading C5E Diolefins are prepared by simultaneously dehydrohalogenating and dehydrogenating an alkyl halide selected from 2 halo-butanes, 2- methyl-2-halobutanes, 3-methyl-2-halobutanes and 2,3-dimethyl-2-halo-butanes. The reaction may be effected at 500-800 C. in the presence of an oxide catalyst and an inert gaseous heat transfer agent. Diolefins which may be prepared are 1,3-butadiene, isoprene and 2,3-dimethyl- 1,3-butadiene. The example describes the preparation of isoprene from 2-chloro-, 2- methyl butane using silica or alumina as catalyst.
Patent GB-1083158-A (GB)
Title: Method and apparatus for the automatic pallettization of loads
Inventor: GAUGHAN GEORGE BERNARD
IPC: B65G1/02
Filed: 1965-10-28
Abstract: 1,083,158. Load handling pallets; stacking on pallets. M.E.L. EQUIPMENT CO. Ltd. June 14, 1966 [Oct. 28, 1965], No. 45720/65. Headings B8C and B8H. A pallet comprises a wooden base member1 with a top surface member 2 having grooves 3, 4 along two of its sides and with a fairly smooth top surface 5 so that boxes 10 may easily be moved over it. Two divider members 6, 7 are vertically arranged on the top surface 5 with their ends provided with locking screws 8, or spring bias means, to permit adjustable location on the base member 1. In use a layer of three lines of boxes 10, three in a line is arranged on the top surface member 2, separated by the dividers.6, 7. Further layers of boxes 10 may be added utilizing spacer members 11 with dividers 16, 17 similar to the top surface member 2 with its dividers 6, 7. Each layer other than the top layer is held in place by the weight of the layer or layers above. If it is necessary to hold the top layer in place divider members similar to 16, 17 may be placed at the end of the top spacer member 12 and clamped sufficiently tightly to prevent any lengthways movement so that additional stops at the end of each line are not required. Such additional stops may be provided at the end of the divider members 16, 17 as lateral projections. In loading the pallet the dividers 6, 7 are at the right hand end of the drawing. The first three boxes 10 are fed automatically in the direction of arrow A from a gated conveyer or roller section. The divider 6 is moved until it abuts the boxes 10 and locked into position by the screws 8. The pallet is then moved a sufficient distance in the direction of arrow B to enable a further three boxes 10 to be fed on to the surface 2 and the divider 7 moved up and clamped. After a further movement in the direction of the arrow B a third line of three boxes 10 can be pushed on to the surface 2. The spacer member 11 is lowered on to the nine boxes 10, the base member 1 returned to its initial position and a further layer of nine boxes 10 loaded. Further spacers 11 and layers of boxes 10 may be added. To unload the pallet automatically a ram may be used set to move a distance corresponding to the number of boxes 10 required to be unloaded at a particular point, as in an automatic warehouse. An automatic computer programme may be set up to deal with the schedules required.
Patent GB-1107320-A (GB)
Title: Epoxidation of olefinically unsaturated compounds
IPC: C07D301/19
Filed: 1965-05-04
Abstract: An epoxy compound is obtained by contacting an olefinically unsaturated compound having from 2 to 4 carbon atoms in the olefinically unsaturated aliphatic chain with an organic hydroperoxide in the liquid phase in the presence of a catalytic amount of a vanadium catalyst added in the form of an inorganic compound of vanadium.  The reaction is suitably effected at -20 to 200 DEG  C. and a solvent may be present.  In an example propylene is oxidized to propylene oxide with tertiary butyl hydroperoxide in the presence of vanadium pentoxide.
Patent GB-1152827-A (GB)
Title: A method of Producing a Bulked Yarn
IPC: D02G1/20
Filed: 1966-10-14
Abstract: 1,152,827. Stuffer box crimping yarn. JOSEPH BANCROFT & SONS. CO. 14 Oct., 1966 [21 Oct., 1965], No. 46063/66. Headings D1F and D1W. A yarn is stuffer-box crimped, and is then stretched at a temperature between room temperature and the temperature at which the crimp was set in the yarn to impart a temporary straight set to the yarn, and is subsequently heated to remove the straight set and to cause the crimps to reform out of phase in the various filaments. As described the yarn is crimped in a stuffer box of the type set forth in Specification 1,116,235, and is tensioned and looped around a stepped roll and a roll spaced therefrom and inclined thereto with the yarn loops passing from the smaller diameter portion to the larger diameter portion of the stepped roll to stretch the yarn. Heating elements positioned inside the larger diameter portion are controlled by a temperature sensing element either inside or outside of the roll. The stepped roll and drive roll of the take-up bobbin are driven by a motor controlled by a potentiometer in dependence on the position of the end of the plug of crimped yarn in the stuffer box. The stepped roll may have further steps to stretch the yarn in more than one stage.
Patent GB-1445933-A (GB)
Title: Exhaust gas recirculation system
IPC: F02M25/07
Filed: 1974-10-25
Abstract: 1445933 Exhaust gas recirculation FORD MOTOR CO Ltd 25 Oct 1974 [5 Nov 1973]  46200/74 Heading F1B [Also in Division G3] An I.C. engine has a valve 56 which governs the recirculation of exhaust gases into the inlet manifold as a function of throttle valve opening, the valve being operated by a servo 58 responsive to a pressure signal from the inlet manifold via port 80 and air lines 86, 74 connected by an air bleed device 84 which modifies the pressure signal at the servo and consequently the degree of exhaust gas recirculation in dependence on manifold pressure. Gases pass from the exhaust manifold 38 to the inlet manifold via duct 46 valve 56, normally closed by spring 77, and ducts 48, 50. The inlet manifold pressure is communicated via a line 118 to the bleed device 84 containing a spring loaded diaphragm 104 which governs the flow of air from a passage 106 open to the atmosphere, to line 74 via a flow restrictor 92. Servo 58 comprises chambers 70, 68 separated by a diaphragm 66, chamber 70 being connected to line 74 and chamber 68 being open to the atmosphere. During engine idling, throttle valves 26 are closed and the pressure in line 86 is atmospheric, this pressure being transmitted via a flow restrictor 90 to servo 58 which closes valve 56 preventing flow of exhaust gases into the inlet manifold. Under light acceleration, throttle valves 26 are open slightly, the edge of one of the valves being in the proximity of port 80 resulting in the pressure in lines 86 and 74 becoming subatmospheric; the inlet manifold pressure is sufficiently subatmospheric to hold bleed device 84 open allowing air to bleed into line 74, raising the pressure within it above that in line 86. Valve 56 therefore opens slightly allowing recirculation of exhaust gases. Under heavier acceleration, throttle valves 26 are opened wider thereby raising the inlet manifold pressure to a level which allows bleed device 84 to close. The subatmospheric pressure in line 86 is therefore transmitted directly to servo 58 which opens valve 56 fully, allowing maximum exhaust gas recirculation. When throttle valves 26 are wide open and no longer in the proximity of port 80, the pressures in lines 86, 118 become substantially atmospheric, bleed device 84 and valve 56 are therefore closed and no recirculation occurs. Under deceleration, when recirculation is not required, a non-return valve 124 allows by-pass of restrictor 90 so that valve 56 may close quickly.