baber/WOPTO huggingface dataset:
Patent GB-1274614-A (GB)
Title: Display apparatus
Inventor: ECHTER OTTO HERMANN
IPC: G09F11/24
Filed: 1970-05-13
Abstract: 1,274,614. Display apparatus. O. H. ECHTER. 13 May, 1970 [18 June, 1969], No. 23045/70. Heading G5C. A display apparatus, comprises a frame 1, Fig. 1, with display aperture 3 in which tapes 4 mounted on a pair of horizontal rollers 5a, 5b, Fig. 3, are interwoven with tapes mounted on a pair of vertical rollers 6a, 6b, said rollers being rotated by drive means 20. Each of the two pairs of rollers, which are mounted in a rectangular array in a single vertical plane, has a roller 5a having sprocket teeth 13 engaging perforations on the tape edge, intermittently or continuously driven through gear 7, 8 by a motor 20, and an idler roller 5b having upstanding guides 14 for the tape. Each roller may have a number of sections corresponding to the number of tapes mounted on it, and adjacent sections may be of differing diameter. The tapes may be illuminated by internal or external lighting and may have pockets to accommodate advertising material. The display apparatus, may be of cubic form, having parallel pairs of rollers defining its edges, and display apertures on its four vertical planes. There may also be a secondary roller system Fig. 6 (not shown), associated with each pair of rollers so that longer tapes may be used.
Patent GB-531987-A (GB)
Title: Improvements in weaving loom shuttles
IPC: D03J5/24
Filed: 1939-08-10
Abstract: 531,987. Loom shuttles. WATSON, J. M. Aug. 10, 1939, No. 23082. [Class 142 (iii)] A self-threading shuttle a has a hole b extending from the interior of the shuttle to the eye, a slot c extending from the top surface of the shuttle to the hole along the entire length of the hole, and a metal or other plate f secured to the side of the shuttle so as to leave a passageway j leading from the slot c to a slot n in the plate. In threading, the weft thread passes down the slot c into the hole b, around the passageway j to the slot n to a hole m in line with the eye. A projection o extends across the upper end of the slot n in such way as to allow the thread to pass upwardly through the slot, but to prevent its passage nwardly and outwardly. A split ring d is arranged e end of the slot b to form the eye of the shuttle.
Patent GB-1341128-A (GB)
Title: Detection circuit for frequency-modulated signals
IPC: H03D3/18
Filed: 1971-04-19
Abstract: 1341128 Frequency demodulators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [7 March 1970] 23085/71 Heading H3A A frequency demodulator comprises a first gating circuit 5, having input terminals 3, 7 connected directly and via a serial connection of a second gating circuit 13 and a phase determining network 9, 11 respectively to an input signal at 1, e.g. from a limiter, a second terminal 19 of circuit 13 being coupled to a reference potential with the gating circuits 5, 13 having equal signal transmission properties between their first input terminals 3, 15 and the outputs 29, 17 respectively. In operation, a signal phasemodulated relative to the signal at 3 appears at 7 having a mutual phase shift of 90 degrees at the centre frequency with a phase deviation proportional to the frequency deviation from the centre frequency. Transistors 21, 25 act as switches closing and opening with a phase difference of 90 degrees at the centre frequency and at a different frequency-dependent phase difference in the case of deviating frequencies. A pulsatory direct voltage, the mean value of which is dependent on the phase difference of signals at 3, 7 and hence on the original modulation is developed at 29. In case of insufficient limitation of the input signal at 1, phase variations of the output at 29 due to amplitude variations in the input signal is prevented by the second gating circuit 13 introducing a phase shift which compensates for the phase shift of the directly applied FM signal by the gate 5. The embodiment of Fig. 2 (not shown) employs two parallel arranged transistor pairs controlled in phase opposition. The input circuit which is common for the first and second gating circuits ensures equal phase shift in the case of an amplitude modulation superposed on the input FM signals due to insufficient limiting.
Patent GB-1500860-A (GB)
Title: Data communication system using photo couplers
IPC: H04L12/28
Filed: 1976-06-04
Abstract: 1500860 Data communication system YOKOGAWA ELECTRIC WORKS Ltd 4 June 1976 [13 June 1975] 23144/76 Heading G4H A data communication system comprises a pair of transmission lines 1, 1<SP>1</SP> connecting a master station with a series of subsidiary stations 31 &c. each arranged to receive signals from the master station by way of a first photocoupler 311 &c. and to transmit signals to the master station by way of a second photocoupler 313, 323,... Each photocoupler comprises a light emitting diode and a phototransistor arranged as shown. The master station contains two current sources 21, 21<SP>1</SP> operated by switches 22, 22<SP>1</SP> for transmission and reception. A diode D<SP>1</SP> isolates photocouplers 313 &c. during transmission to the subsidiary stations, and a diode 312 &c. by-passes photocoupler 311 &c. during transmission from the stations to a receiving circuit 23.
Patent GB-258868-A (GB)
Title: Improvements in or relating to electric transformers
IPC: H02H9/08
Filed: 1926-09-20
Abstract: 258,868. International General Electric Co., Inc.; (Assignees of Allgemeine Elektricitõts Ges.). Sept. 22, 1925, [Convention date]. Drawings to Specification. Transformers; phase, changing. - Relates to supply systems in which Scott-connected transformers are employed for interconnecting two- and three-phase systems, and consists in means for obtaining a neutral point which will remain at a constant potential under load. The means may comprise interlinking of the transformer windings. loading the two phase side of one or both transformers with a zig-zag connected choke, or providing the cores of one or both transformers with a third limb made of solid iron or steel instead of laminations or embraced by a short-circuited auxiliary winding.
Patent GB-1532998-A (GB)
Title: Machine tools
IPC: B23Q5/54
Filed: 1976-05-21
Abstract: 1532998 Feeding slides and carriages DEAN SMITH & GRACE Ltd 21 May 1976 [27 May 1975] 23176/75 Headings B3B and B3T In a machine tool in which a movable component, e.g. a slide on a lathe, has a slow hand feed drive and a selectively operable fast power drive means, the slow feed drive means comprises a rotatable hand wheel 2 which rotates a drive sleeve 8 mounted on a support sleeve 10, the sleeves 8, 10 being in driving connection by means of teeth 14, 16 to rotate a spindle 12, and wherein to select the fast power drive means the hand wheel 2 and drive sleeve 8 are slid along the support sleeve 10 to disengage the teeth 14, 16 and engage further teeth 32 with rack teeth 34 on a linearly movable rack member having a switch actuating finger 44 which actuates, e.g. a switch 52, to start up power drive means. The spindle 12 is drivingly connected to a feed screw for moving the said component, and the power drive means is drivingly connectable to this feed screw. The rack member can be moved in either direction by the hand wheel 2 to actuate one of a pair of said switches to selectively engage a forward or reverse drive.
Patent GB-1190816-A (GB)
Title: Extrusion Moulded Particled Board, and Method and Apparatus for Making such Board
Inventor: ERBACH-FURSTENAU ALFRED GRAF Z
IPC: B30B11/26
Filed: 1967-05-19
Abstract: 1,190,816. Extrusion moulding of chip board laminates. A. G. ZU ERBACH-FURSTENAU. 19 May, 1967 [21 May, 1966], No. 23272/67. Headings B5A and B5N. [Also in Division C3] Particled wood board in which the chips in the surface layers are bent or oriented parallel to the extrusion direction is made by feeding wood chips and a binder from a hopper 1 through a heated extruder 2 by means of a reciprocating plunger 4, the emergent board being not quite set, and then passing the board through a pair of compression rolls. In a modification, Fig. 4 (not shown), the inner faces vary in diameter from a wide section (a 1 ) adjacent the plunger to a narrower lower section (a 2 ) of the width of the plunger, the parts (a 1 ), (a 2 ) joining at a rib (18). Passage of the chips over the rib (18) partially orientates them. In a further embodiment, Fig. 5 (not shown) two extruder sections of width (a 2 ) are spaced by a wider section (a 1 ). In every embodiment the compression rolls may be followed by one or more pairs of additional rolls, by stationary or vibrated plain compression members or by endless belts 12. The inner faces of the heated extruder plates 2 may be provided with projections and recesses to aid chip orientation. The compression and additional rolls may be heated, may be positively driven above or below the board speed and may be fixed or resiliently mounted. Also paper, plastic or metal foil 8 may be applied to one or more surfaces of the board from drums 7, the board and/or foil being sprayed with adhesive from the nozzles 6. The foil may pass round the compression rolls 9. The moisture content of the board and/or paper may be controlled to provide a built-in stress in the finished board.
Patent GB-459673-A (GB)
Title: Improvements in the manufacture of building materials
IPC: C04B28/00
Filed: 1935-08-19
Abstract: Building bricks, blocks, slabs, &c. are made by shaping a plastic composition comprising sand or other comminuted non-metallic mineral substance, lime, and an aqueous solution of one or more bond-forming agents comprising aluminium oxalate, sulphate, silicate or hydrate, magnesium sulphate or silicate, sodium silicate, potassium silicate, tartaric silicate and arsenic silicate, and hardening the shaped articles by exposure in an atmosphere consisting substantially completely of carbon dioxide. The concentration of the solution is such that the amount of the bond-forming agent present is insufficient to combine with the p  whole of the lime.  Preferably the hardening is effected in a closed chamber which is first exhausted to a vacuum of about 28 inches, and is then filled with carbon dioxide and brought to a pressure of 8-10 lbs. per sq. in. and a temperature of about 80 DEG  F.  In a modification, carbon dioxide is formed in situ in the mass, e.g. by the reaction of a metal powder such as aluminium or zinc, a caustic alkali such as sodium or potassium hydrate and an easily decomposable carbonate, such as ammonium carbonate. Powdered silicate of soda may be mixed with the sand or the like. Portland cement or a mixture of Portland cement and calcined calcium sulphate may be mixed with the lime or may contain all the lime necessary.  After hardening the bricks &c. may be rendered non-porous by immersing in a solution of barium sulphate, or in a solution of a double fluoride of silicon and a metal, e.g. magnesium or zinc silicon fluoride, or in a solution of silicic acid, silicon fluoride or barium hydrate.  Treatment with barium hydrate may be followed by immersion in a solution of magnesium fluoride or zinc fluoride or a mixture thereof.
Patent GB-1073281-A (GB)
Title: Improvements in and relating to corrugated metal sheets particularly for constructing tanks and the like
IPC: F17C3/02
Filed: 1964-06-04
Abstract: 1,073,281. Liquefied gas containers. TECHNIGAZ. June 4, 1964 [June 27, 1963], No. 23299/64. Heading F4P. [Also in Division E1] Sheet metal, particularly for tanks for liquid gases, heat exchangers, and casings for nuclear reactors, has two series of corrugations 3, 4, all the corrugations of each series intersecting each one of the corrugations of the other series and a third series of corrugations or depressions 5 is formed in the corrugations 3 near the intersection of the corrugations 3, 4. The depressions 5 are formed one on each side of an intersection and form angular projections on each side of the corrugations 3. The end of each part of a corrugation 4 projects into a corrugation 3 to some extent so that the side 9 of the corrugation 3 at this point is substantially vertical, also the crest 7 of the corrugation is flattened.
Patent GB-1477486-A (GB)
Title: Method of bonding polyvinyl chloride to a substrate
IPC: C09J175/04
Filed: 1974-05-24
Abstract: 1477486 Laminates HOECHST AG 24 May 1974 [26 May 1973] 23391/74 Heading B5N [Also in Division C3] A plasticized P.V.C. substrate is bonded to itself or another substrate by applying, to either substrate, an adhesive composition, and bring- ing the surfaces together. The adhesive composition comprises (1) a polyurethane or nitrilerubber elastomer, (2) (a) an HMT-free novolak and/or (b) a halogenated hydrocarbon resin or a (vinyl chloride)/(vinyl acetate) copolymer, and (3) a solvent. The novolak is derived from a bisphenol, an alkyl- or cycloalkylphenol having #3 C atoms in the alkyl group, and/or an arylphenol, optionally mixed with #50% mole phenol and/or a (cyclo)alkyl phenol having 1 or 2 C atoms in the alkyl group. In Examples, diphenylolpropane and 2,6 - dimethylol - 4 - nonyl-phenol are referred to. The halogenated hydrocarbon resin may be e.g. chlorinated natural rubber or polypropylene. The solvent may be a ketone. The other substrates include e.g. polyurethane-based artificial leather, rubber leather, metals, textiles, wood, paper or cardboard.
Patent GB-615655-A (GB)
Title: Improvements in and relating to agricultural tractors
IPC: B62D49/06
Filed: 1946-08-08
Abstract: 615,655. Agricultural tractors. WATTON, H. F. Aug. 8, 1946, No. 23506. [Classes 79 (i), 79 (ii) and 79 (v)] In a tractor having a plough a with one or more mouldboards at each end thereof so that either plough may be brought into action dependent on the direction of travel, each tractor driving wheel h is driven through a pair of diametrically opposite pinions i, i<SP>1</SP>, engageable with a gear ring on the outer periphery of the wheel h, each pinion incorporating a freewheel device capable of driving in one direction only. The steering columns k, k<SP>1</SP> may be provided suitably linked with each other in fore-and-aft positions on opposite sides of the drivers seat m which is preferably reversible. The ploughs a are interconnected from brackets b by a rod c which is connected to the lower end of a pivoted lever d with a quadrant locking device.
Patent GB-366897-A (GB)
Title: Improvements in or relating to the production of polymerised vinyl derivatives
IPC: C08F14/06
Filed: 1930-08-06
Abstract: Vinyl compounds are polymerized by treatment with a polymerization catalyst in the presence of a liquid medium which is a solvent for the initial material but not for the polymer produced.  The method may be applied to batch processes or to continuous flow processes, and facilitates the separation of the polymer from the solvent. Examples describe the polymerization of: (1) vinyl acetate using high boiling gasoline as solvent and benzoyl peroxide as catalyst; (2) vinyl chloracetate using ozonized methyl alcohol; (3) a mixture of vinyl acetate and chloracetate using high boiling gasoline and benzoyl peroxide; (4) styrene using ozonized methyl alcohol; (5) vinyl formate using ethyl acetate and benzoyl peroxide; (6) vinyl acetate using dibutyl ether and benzoyl peroxide; (7) vinyl chloracetate using toluene and benzoyl peroxide.  Vinyl chloride is also mentioned as starting material.
Patent GB-1504439-A (GB)
Title: Tyre manufacture
IPC: B29C45/14
Filed: 1974-05-28
Abstract: 1504439 Moulding tyres DUNLOP Ltd 19 May 1975 [28 May 1974] 23564/74 Heading B5A In a method of moulding a tyre tread incorporating a breaker structure, the structure 35 is annular and has a single layer or a radially outermost layer of parallel cords extending in a generally axial direction of an annular mould cavity 14 provided between an annular core 12 and mould parts 10, 11, 13; uncured rubber is injected around the circumference of the cavity through an annular gate 16 such that the flow does not displace the cords located on the core. The breaker structure is gripped, in the mould closed position, between projections 22 and inserts 34, the projections having gaps therebetween allowing flow to the cavity ends. The gate 16 may be fed via an annular reservoir 20 and a restricted annular passage 21, the reservoir being supplied via an annular compression chamber 17.
Patent GB-1067566-A (GB)
Title: Improvements in or relating to cutting devices
Inventor: MARTIN ALBERT EDWIN
IPC: B26D1/10
Filed: 1964-06-08
Abstract: 1,067,566. Slitting-apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES  Ltd. June 8, 1964, No. 23586/64. Heading B4B. Sheet material consisting of or incorporating a synthetic resin e.g. copper-clad resin-bonded paper material is slit by means of a gang of cutting devices each comprising a rotatable serrated cutter disc 10 co-operable with cutting edges 2a, 3a in plates 2, 3 of fixed cutters 1, the serrations in each disc successively engaging the material so as to -feed it along the cutting edges 2a, 3a and at the same time press it against them so that it is sheared thereby. The -chips formed between the edges 2a, 3a by eachdisc 10 are ejected downwardly between the plates 2, 3 of each cutter 1. A rubber disc 13 is fixed on each side of each disc 10 to prevent the material from bowing at the sides of the disc.
Patent GB-696647-A (GB)
Title: A new or improved tenoning attachment for use on planing machines
Inventor: MELDRUM EDWARD CHARLES
IPC: B27F1/04
Filed: 1950-09-26
Abstract: 696,647. Tenoning attachment for planing machines. KINE ENGINEERING CO., Ltd. Sept. 26, 1951 [Sept. 26, 1950], No. 23609/50. Class 145 (i). A tenoning attachment for a wood planing machine comprises a frame 1-5 adapted to be secured to that table (usually 12) of the planing machine that is adjustable to control the depth of cut, and a table 6 carried on rails 2, 3 the former having a projection 7 to laterally align the table. A clamp 9 holds the wood which is traversed across the cutter to form one side of a tenon. A bracket 14 secured to the planer carries the frame in such a manner that it is adjustable vertically therein. The fence 8 may be angularly adjustable or preferably replaceable by alternative fences for cutting tenons at an oblique angle.
Patent GB-1414527-A (GB)
Title: Adjustable nuclear pulse generators
IPC: G04F5/14
Filed: 1973-05-17
Abstract: 1414527 Utilizing energy of radiation BULOVA WATCH CO Inc 17 May 1973 [18 May 1972] 23678/73 Heading G6P In a nuclear pulse generator (Fig. 2) a radioactive source 14 provides #-emission which is detected by a solid-state detector comprising a main detector area XII permanently connected to a terminal T 1  and subsidiary detector areas I-XI which are selectively connectible to the terminal T 1  through switches S 1 -S 11  so as to enable adjustment of the output pulse rate from the detector.  In a practical construction (Fig. 3) the subsidiary detector areas are indented into the edge of the main detector area to define a rectangle overlaid by the source 14 which may be Pu-242 U-233 or Np-236. The detector is a solid state device. Each area of the detector leads to a respective conductive strip C1-C12, the latter having permanent connection via rivet 19 to a metal base 18, and defining terminal T 1 . Selected ones of the strips C1-C11 are connected to the base 18 by screws S1-S11 acting as switches. The subsidiary detector areas are related in binary fashion, so as to give incremental adjustments of 100 p.p.m. in the output pulse rate.
Patent GB-746779-A (GB)
Title: Improvements in hydraulic pit props
IPC: E21D15/45
Filed: 1953-08-28
Abstract: 746,779. Hydraulic pit props. DOWTY HYDRAULIC UNITS, Ltd., [formerly DOWTY AUTO UNITS Ltd.], BARNETT, L. L. S., and FRYE, C. M. Aug. 27, 1954 [Aug. 28, 1953], No. 23856/53. Class 20(2). [Also in Group XXVIII] In a hydraulic pit prop having a hollow cylindrical ram 11 which houses at its inner end a two stage pump (see Group XXVIII) for delivering fluid from a reservoir constituted by the ram 11 into the space 20 in a cylinder 12 into which the ram 11 slides, the pressure in the space 20 is releasable by an externally operable release valve 33 adjacent the outer end of the ram 11 and communicating with the space 20 through a conduit 34 extending down the ram 11 to a point adjacent the pump and through an annular chamber surrounding the larger diameter cylinder of the pump. When a sealing gland 16 is carried by the upper end of the cylinder as in Fig. 1, or when the sealing gland is carried on the ram 11 above the lower end of the conduit 34, the annular chamber is constituted by the annular clearance between the ram 11 which forms the larger diameter cylinder and the cylinder 12. When a sealing gland 38 is carried by the inner end of the ram 11, as in Fig. 3, the annular chamber is constituted by a space 40 between the ram 11 and a length of tubing 39 which forms the larger diameter cylinder of the pump. A modification according to Fig. 2 (not shown) differs from the arrangement of Fig. 1 in that the dispositions of the small piston and cylinder are reversed, the annular chamber being formed by the clearance between the ram 11 and cylinder 12.
Patent GB-277659-A (GB)
Title: Process for dissolving coal and product produced thereby
IPC: C10L1/32
Filed: 1927-09-12
Abstract: 277,659. Trent Process Corporation, (Assignees of Trent, W. E.). Sept. 14, 1926, [Convention date]. Mineral and tar oils, extracting; liquid fuels.- Fuel is obtained by heating bituminous coal and a liquid hydrocarbon to the softening point of the coal and under pressure sufficient to prevent substantial vaporization. In an example 1 lb. of coal ground to 500-1000 mesh and 2 lb. of benzol or a petroleum oil are heated for “-several hours to about 400‹ C. under pressure in a still which is provided with an agitator to facilitate the colloidal dispersion and the suspension of undissolved carbonaceous particles. The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of alcohol or other active solvent in place of the liquid hydrocarbon, and the use of any suitable temperatures and of any kind of coal. This subjectmatter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 9730/15, 129,992, 131,588, 149,306, 161,929 and 268,372.