baber/WOPTO huggingface dataset:
Patent GB-1300224-A (GB)
Title: Improvements in or relating to pattern recognition systems
Inventor: BEURLE RAYMOND LOUIS
IPC: G06V10/20
Filed: 1969-03-18
Abstract: 1300224 Pattern recognition NATIONAL RESEARCH DEVELOPMENT CORP 16 March 1970 [18 March 1969] 14240/69 Addition to 1237534 Heading G4R A pattern recognition arrangement using log-autocorrelation or autocorrelation-log-autocorrelation transformations as in the Specification 1,237,534, has comparative recognition means including filtering means to accentuate the regions of difference between otherwise similar patterns or provide each element of the field with a gain proportional to ratio of signal content to square of noise content. The recognition means filters the matrix of signals from the (last) autocorrelation by weighting each element of the matrix with the corresponding element of a weighting matrix. In fact a chain of filters is used, classifying the pattern in progressively smaller groups of possible patterns until the pattern is classified into one of a plurality of one-pattern groups to identify the pattern. A typical weighting matrix, for distinguishing between P and F, is obtained as follows. For each character separately, a series of versions of the character is applied and the output matrix from the (last) autocorrelation for each is subtracted from the mean of these matrices, to form a difference matrix. Each element of each difference matrix is squared, and corressponding elements in the difference matrices are averaged to obtain a mean square noise matrix. A signal matrix is obtained by subtracting the mean values of all the P matrices from the mean values of all the F matrices (or vice versa). The signal matrix elements divided by the corresponding mean square noise matrix elements give the elements of the weighting matrix. In the recognition, the elements resulting from the weighting are added together to give a number which identifies the character as is P or F (the filter for distinguishing P from F is of course at the exit end of the chain of filters). The (last) autocorrelation output is normalized by dividing by the value at the origin of the average value. Further details may be as in the Parent.
Patent GB-453182-A (GB)
Title: Improvements relating to stair carpet retaining devices
IPC: A47G27/06
Filed: 1935-05-16
Abstract: 453,182. Stair-carpet fasteners. CLAY, A., and WICKER, J. C., 21, St. Paul's Square, Birmingham. May 16, 1935, Nos. 14309 and 22374. [Class 52 (v)] In a stair-carpet fastener of the type comprising a bracket secured to the stairs and a movable arm which can be locked in the retaining position, the bracket 7 has a recess 7d to receive the edge of the carpet so that a carpet the full width of the stairs may be used. The arm 9 is provided with a screw 10 which engages a screw box 8 on the bracket to secure the arm in the retaining position. The arm may be separable from the bracket or pivoted thereto. Specification 420,706 is referred to.
Patent GB-579709-A (GB)
Title: Process of improving the crease-resisting properties of textile materials
IPC: D06M15/423
Filed: 1944-07-27
Abstract: Textile materials are subjected to an anti-crease treatment by impregnating them with an aqueous solution containing a partially condensed resinous aldehyde condensation product, ammonium thiocyanate and sodium hexametaphosphate and then subjecting the treated materials to heat to insolubilise the resin.  The expression " aqueous solution containing a partially condensed resinous aldehyde condensation product " is inclusive of an aqueous solution of the resin-forming components, e.g. urea and formaldehyde.  Among other advantages, the addition of sodium hexametaphosphate prevents any discolouration of the textile materials due to traces of iron salts. Examples are given in one of which viscose rayon staple cloth is padded with a precondensate solution of urea and formaldehyde to which ammonium thiocyanate and sodium hexametaphosphate are added. The treated cloth is then squeezed, dried at 70 DEG  to 75 DEG  C. and heated for 4 minutes at 140 DEG  C.  Specifications 258,357, 291,473, 291,474, [all in Class 42 (i)], 424,535, 449,243 and 555,575 are referred to.
Patent GB-656200-A (GB)
Title: Improvements in or relating to radiating or receiving devices for electromagnetic waves
Inventor: COLLARD JOHN
IPC: H01Q13/02
Filed: 1948-05-28
Abstract: 656,200. Aerials. ELECTRIC & MUSICAL INDUSTRIES, Ltd. May 28, 1948, No. 14400. [Class 40 (vii)] In a wave-guide horn for radiating or receiving radio waves, the cross-sectional dimensions of the horn increase in a series of steps from its throat to its mouth. The wave-guide 1 feeding the horn is of such dimensions as to propogate H 10  waves only and the successive stepped portions 2 of the horn are so dimensioned as to be matched with respect to one another to prevent the production of higher order modes. Each step behaves as a transformer, the first and the last step having a particular value for the equivalent turns ratio, e.g. r, the turns ratio for the intermediate step being then arranged to have a value r<SP>2</SP>. The stepped portions are so dimensioned that each has the same value of characteristic impedance Z o , and are each a quarter wavelength long, the wavelengths being as measured at the appropriate points in the horn. The transformer action of the first step produces an input impedance to the corresponding section of Z o /r<SP>2</SP>, which is converted by the quarter-wave transformer to Z o r<SP>2</SP> at the foot of the succeeding step. The input impedance at the succeeding section is transformed by the step to Z o /r<SP>2</SP> and this process is repeated until at the last section the input impedance becomes Z o , so that stepped-horn arrangement is matched to its output section. When the horn is used for receiving purposes, conducting slats may be arranged across the mouth of the horn perpendicular to the direction of polarization of the radiation it is desired to receive, to prevent the reception of unwanted radiation polarized perpendicularly thereto.
Patent GB-593111-A (GB)
Title: Improvements in and relating to the manufacture of resinous condensation products
IPC: C08G12/40
Filed: 1945-06-07
Abstract: Resinous products for imparting wet strength to paper (see Group VIII) are prepared by condensing together urea, formaldehyde, not less than 10 per cent of the weight of the urea of an organic or inorganic bisulphite or metabisulphite, and an acidic condensation agent sufficient to bring the pH substantially below 4, the formaldehyde solution being initially boiled with the urea and/or bisulphite, or with the bisulphite and acidic condensation agent, followed by the addition of the remaining reagents while boiling. 1.5 to 3 mols., preferably 2 mols. of formaldehyde may be used per mol. of urea.  Suitable condensation agents are sulphuric, sulphamic, sulphurous, hydrochloric, mono-, di-, or trichloracetic, phosphoric or pyrophosphoric or oxalic acids, alkali or ammonium bisulphates or normal ammonium salts, e.g. ammonium chloride which liberates acid with formaldehyde. The product is stabilized by neutralization by alkali or dilution with water, alcohol or formalin, and the neutralized solution may be evaporated to dryness.  In examples: (1) formalin (of pH 7), urea and sodium metabisulphite are boiled together at pH 9.2 for 30 minutes, sulphuric acid added to give a pH 2.5, and the mixture boiled one hour, neutralized and cooled; (2) formalin, triethanolamine bisulphite (prepared in solution) and urea are boiled for half an hour, sulphuric acid added to give a pH 3, boiling continued a further hour and the solution neutralized and cooled; (3) SO2 (condensation agent) is passed into a solution of sodium metabisulphite to give a pH 2.5, and urea solution added to the boiling solution and boiled 15 minutes; (4) urea solution acidified with sulphurous acid is added to a boiling solution of triethanolamine in formalin with excess SO2 to give a pH below 2, over 30 minutes and boiled a further 15 minutes; (5) a solution of urea and sodium metabisulphite acidified with sulphurous acid to pH 3.5 is added over 45 minutes to a boiling solution of formalin and sulphurous acid at pH 2 and boiled a further 15 minutes; (6) a solution containing urea, triethonolamine bisulphite, and excess sulphurous acid (pH below 2) is fed into a boiling solution of acidified formalin and boiling continued; (7) SO2 gas is delivered into a boiling solution of urea and triethanolamine in formalin to give a pH 2 and boiling continued a further 30 minutes; (8) urea and neutral formalin are boiled for 30 minutes, a solution of triethanolamine bisulphite fed in, followed by a solution of sulphurous acid, and boiling continued for a further 40 minutes.  In all the examples, the product was neutralised before cooling, caustic soda being used in examples 1-6, and triethanolamine in examples 7 and 8. The solutions of examples 1, 3, 5, 8 were used directly and those of examples 2, 4, 6, 7 were diluted with 3 volumes of formalin. Specifications 537,813 and 595,366 (as open to inspection under Sect. 91) are referred to.
Patent GB-1405366-A (GB)
Title: Vulcanizable compositions
IPC: C08L33/00
Filed: 1973-03-26
Abstract: 1405366 Stabilized rubbers BRIDGESTONE TIRE KK 26 March 1973 [24 March 1972] 14439/73 Headings C3P and C3E Rubbers are stabilized by reaction with a nitroso-quinoline of formula in which each R is H, OH, or a C 1-15  alkyl, aralkyl, cycloalkyl or aminoalkyl radical. Compounds in which at least one R is OH are preferred. Numerous rubbers are exemplified, those used in the specific examples being natural rubber, SBR, natural rubber/SBR mixtures, polyisoprene and polybutadiene, to which are also added conventional rubber compounding ingredients.
Patent GB-882021-A (GB)
Title: A drill sharpening machine
IPC: B24B3/24
Filed: 1958-05-07
Abstract: 882,021. Grinding drills. CHRISTEN & CO. A.G. May 7, 1958 [May 16, 1957], No. 14587/58. Addition to 835,244. Class 60. The drill-grinding machine of the parent Specification, in which a drill to be sharpened is given simultaneously the following three movements, viz. rotation around its axis to form the angle at the drill tip, rocking movement around an axis 10 passing through the drill tip and located in the plane of the operative face of the grinding wheel 6 so as to form with the first movement the cutting edges and backing off surfaces of the drill, and substantially axial reciprocation towards and from the grinding wheel so as to form the terminal ridge of the drill, has the arm 4 carrying the grinding wheel fitted to the outer end of a lateral support 3 so as to permit easy access to a stop 49 which can thus be easily adjusted to positions for grinding right and left hand drills; in these positions, the drill is angularly set to either side of a plane containing the axes 10, 4a about which the carrier for the headstock 12 can swing on the pedestal 2 and the arm 4 rock on the support 3, respectively.
Patent GB-1483754-A (GB)
Title: Mixing devices
IPC: B01F25/64
Filed: 1974-04-03
Abstract: 1483754 Mixing heads; comminuting apparatus SILVERSON MACHINES Ltd 3  April 1975 [3 April 1974] 14812/74 Headings B1C and B2A [Also in Division F1] A mixing device comprises a mixing head 3 which comprises a rotor 5 and a stator 7, the stator having an inlet 29 coaxial with the rotor axis and outlet means 31 through which material is expelled radially, characterised in that the stator includes a stator blade member 49 arranged across the inlet 29 which cooperates with a blade member 39 carried by the rotor so that fibrous material is shredded as it passes through the inlet 29. The material, e.g. a fluids and solids sewarage material, is further subjected to a shearing action as it passes through the outlet means 31 by the ends of the rotor blade 39. The rotor 5 is driven by a motor 9 and the rotor blade member 39 has bevelled surfaces to form a pair of cutting edges 43. The mixing head may be used as a pump in a housing 1 having an inlet 11 and an outlet 13, or in a mixing chamber in a pipe line (Fig. 2 not shown) wherein a housing (71) has an inlet (73) and an outlet 77, the housing (71) being divided into two chambers (91) (93) with the mixing head acting as a pump to pass the fluid/solid material from one to the other. The mixing head 3 may also be used on its own without an external casing as a mixing head within a vessel.
Patent GB-448585-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J61/22
Filed: 1935-05-21
Abstract: 448,585. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent - Treuhand - Ges. f³r Elektrische Gliihlampen; 11, Ehrenbergstrasse, Berlin) May 21, 1935, No. 14817. [Class 39 (i)] In lamps containing a filling of a rare gas and a metal whose vapour pressure rises so that during running most of the current is carried by the metal vapour, the pressure of the rare gas is arranged at such a value that the watt consumption when the lamp is first switched on is at least 15 per cent greater than the consumption at full operation. Sodium and neon may be used ; in a lamp of 20 mm. internal diameter and an electrode distance of 200 mm. the neon is at a pressure of 15 mm. of mercury.
Patent GB-742927-A (GB)
Title: Improvements in or relating to draughting machines
Inventor: TRIMINGHAM AUSTIN LOCH
IPC: B43L5/00
Filed: 1952-06-12
Abstract: 742,927. Draughting-machines. TRIMING- HAM, A. L. Sept. 8, 1953 [June 12, 1952], No. 14854/52. Class 97 (3). In a draughting-machine including a frame 1 for supporting a drawing board 5, a flexible metallic tape 25 having a straight edge and mounted on the frame to extend across the board and a member 21 having a straight edge and secured to the tape with the straight edges at a fixed angle to one another, the tape 25 is movable across the board in a direction at right-angles to its straight edge and is also movable longitudinally so that member 21 is movable across the board. Preferably the board 5 and the frame 1 are relatively rotatable. As shown, a circular baseboard 4 supporting the board 5 is mounted on a pivot 3 at the intersection of cross-braces 2. An angular scale and locking means may be provided. Baseboard 4, or alternatively frame 1 if the frame is rotatable about the baseboard, may have rollers moving on a circular track. A member 11 with opposite parallel chamfered edges 15 has pinions 12 engaging racks 13, 14 on opposite sides of frame 1 so as to move parallel to itself. A slide 17 with fingerpieces 18, slidable in a groove 16 in member 11, carries a mounting bar 19 with dove-tailed extensions on both sides of member 11 to receive the member 21. The tape 25 extends along a chamfered edge of member 11 on the same side thereof as member 21. It extends under fingers 25a, and its ends are coiled within housings 26, 27 mounted on member 11. Both the tape and member 21' are calibrated from the intersection of their straight edges. In a modification, baseboard 4 is supported on a fixed base with frame 1 rotatable, and is crossed by flexible tapes extending at rightangles between housings slidable on bars carried at opposite sides of the frame. The tapes are fastened together, and may have a finger-piece, at the crossing point. In further modifications, (1) the housings for the crossing tapes are mounted on members guided by pinions engaging racks on the frame, which is trunnioned in side-brackets; (2) the crossing tapes are endless, and pass over drums slidable on bars at opposite sides of the frame, which is supported on four feet; (3) endless tapes are carried by members guided by rack-and-pinion mechanism. The tapes may also be guided by means such as pulleys and wires, or members sliding on felt pads.
Patent GB-110777-A (GB)
Title: Improvements in or relating to Re-inforcing Leather and its Substitutes for Footwear, Floorcloths, Machine Belting and Tyres and the like.
Inventor: CHICK PERCY
IPC: A43C13/00
Filed: 1917-04-14
Abstract: 110,777. Chick, P. April 14, 1917. Belts.-A material for machine belting &c. comprises a layer of balata, india-rubber, guttapercha, asbestos, cork lino, papier mÔchÚ or leather with closely set U-shaped wires driven from the. back so as to extend flush with the wearing-surface, and a backing of stout canvas or the like to hold the wires in place. Thel wires may be round or rectangular, and may taper from a flattened base. Reference has been directed by the Comptroller to Spacifications 6790/02, 487/08, [both in Class 17 (i), Boots &c.] ; and 27413/10, [Class 17 (ii), Boots and shoes, Construction of].
Patent GB-317809-A (GB)
Title: Improvements in or relating to the manufacture of coffins
IPC: A61G17/00
Filed: 1928-05-22
Abstract: 317,809. Coop, F. May 22, 1928. Coffins.-The sides of a coffin are made in three pieces, a panel a planed to produce sunken surfaces a<2> and raised surfaces a', and top and bottom rails b and c respectively connected by a tongue and groove joint with the panel. The parts are bevelled as shown.
Patent GB-378953-A (GB)
Title: Improvements in or relating to electro-mechanical display devices
IPC: G08B5/22
Filed: 1931-05-20
Abstract: 378,953. Electric signalling systems; two-position indicators. ASSOCIATED TELEPHONE & TELEGRAPH CO., 1033, West Van Buren Street, Chicago, U.S.A. May 20, 1931, No. 14942. Convention date, May 23, 1930. [Class 40 (i).] An indicator drum 11 is operated step by step by an electromagnet 2 through ratchet and pawl mechanism 14, 15, 25. The drum has a plurality of distinctive markings e.g. different colours, and the drum is adapted to be operated into positions where it displays effectively any one or a combination of any two neighbouring markings. The drum and electromagnet are mounted on a frame member 1, the drum being mounted in line with the axis of the electromagnet and having a diameter substantially the same as the diameter of the electromagnet. This arrangement provides a compact design and facilitates the use of such indicators as alternatives to the lamp signal devices used on the display board for power distribution systems as described in Specification 371,844. The electromagnet is held in position by a nut 18 which also secures an insulated disc 4 carrying four terminals which form connections for the magnet and contacts 12, 13 which are mounted between the drum and magnet and are operated in one position of the drum by a cam 40 on the drum shaft. Springs 8, 9 control the pawl 15 and armature 14 respectively and pawl 30 is provided to prevent backward rotation of the drum. The Specification as open to inspection under Sect. 91 (3) (a) also describes a two-position drum indicator, Fig. 6 (Cancelled). In this arrangement, the armature is connected by pivoted links 34, 35 to a member 36 on the drum shaft and the drum is moved into one or other of two positions according to the energization or de-energization of the electromagnet. Upon operation of the drum, cam 40 operates contact springs. This subject-matter does not appear in the Specification as accepted.
Patent GB-1298728-A (GB)
Title: Work-piece forming apparatus
IPC: B21D22/14
Filed: 1970-03-26
Abstract: 1298728 Rolling mills FRANCE ARMED FORCES MINISTER OF 26 March 1970 [27 March 1969] 15009/70 Heading B3M A rolling machine for reducing the wall thickness of a cylindrical blank 7 includes a number of rollers 13 surrounding the blank and supported in a fixed plate 2, the rollers being urged radially inwardly against abutments 17 fixed to the plate. The blank is carried on a rotatable mandrel 6 and is axially movable by means of a slidable supporting carriage 4. A tailstock 8 clamps the blank on the mandrel and is connected by tie rods 18 to the carriage. Each roller is freely mounted in a housing 10, Fig. 4, and is urged by an hydraulic, pneumatic, or mechanical jack 9 against a pair of abutments 17, Fig. 1. The abutments, which determine the rolled diameter of the blank, can be replaced by abutments of different size or be used with shims. The machine as a whole can be mounted on a mobile carriage, and only two rollers may be used, if so desired.
Patent GB-1429664-A (GB)
Title: Internal combustion engines
IPC: F02B75/10
Filed: 1973-03-29
Abstract: 1429664 Treating I.C. engine exhaust gas ROBERT BOSCH GmbH 29 March 1973 [30 March 1972] 15063/73 Heading B1W An I.C. engine has an exhaust gas system, means for controlling the engine air/fuel mixture to enable a rich mixture to be supplied to the engine, a reactor in the exhaust gas system for decomposing injurious constituents in the exhaust gases, a secondary air feed line leading into the exhaust gas system at a location upstream of the reactor, an oxygen probe positioned at a location in the exhaust system downstream of the outlet of the secondary air feed line for assertaining the amount of oxygen in the exhaust gases at that location, and means responsive to a signal generated by the probe for regulating the rate of feed of secondary air through the secondary air feed line. Engine 10 is supplied with a slightly substoichiometric fuel/air mixture, a catalytic reactor 12 and an oxygen probe 13 which generates a signal which operates a valve 15 via an amplifier 14. Valve 15 controls the flow of air from an engine driven pump 17 into the exhaust system. The probe 13 may be upstream of the reactor 12 and have a catalytically effective surface or a catalyst associated specifically with the probe may be arranged upstream thereof. A thermal reactor may be used instead of, or in addition to the catalytic reactor.
Patent GB-405164-A (GB)
Title: Improvements in or relating to electric supply systems
IPC: H02P9/00
Filed: 1933-05-25
Abstract: 405,164. Equalizing load on generators; systems for transmitting mechanical power. SULZER FRERES SOC. ANON., Winterthur, Switzerland. May 25, 1933, No. 16108. Convention date, June 4, 1932. [Class 38 (iv).] In a supply system such as a Dieselelectric vehicle, the load on the generator is equalised by the provision of an auxiliary source such as a storage battery 5, the output of the generator 2 being automatically regulated in accordance with its speed by apparatus 7 so that its output is maintained constant, the auxiliary source thus supplying only the peak load. The auxiliary source may be an auxiliary unregulated generator or a rectifier fed from A.C. supply. When a storage battery is used the excess of the generator output over the load is used to charge the battery. A relay 10 under the control of the driver is provided to disconnect the battery 10 and the regulating device 7 when the vehicle is on a level or running down-hill in order that the generator voltage may be allowed to rise above that permissible for changing, e.g. if an increased vehicle speed is desired. The speed of the motors 4 is controlled by a rheostat 6.
Patent GB-672790-A (GB)
Title: Improvements in or relating to wound board machines
IPC: B26D1/20
Filed: 1949-06-08
Abstract: 672,790. Wound-board-making machines. WALMSLEYS (BURY), Ltd., and TEMPERLEY, J. May 30, 1950 [June 8, 1949], No. 15215/49. Class 96. Cardboard, asbestos-cement, &c. wound on a making-roll 11 is severed by a knife 19 and its end is blown off by jets 11a. The knife 19 which is housed in a slot in the roll 11 and which has teeth 19a, e.g. of square profile, is reciprocated radially by cams 17, 18, &c. at each rotation, and severs the sheet when the required thickness has been attained by movement along its housing slot, which is effected by compressed air acting, through a ram 28 and a bell-crank lever 30, against a spring 34, the air supply being from the same source as that for the jets 11a and being made available, at the right period of each revolution, by a cam 15 and follower 37 actuating a valve 36, the pipe-line from which leads to a manually-operated valve 35. Another pneumatically-actuated ram (not shown) moves a scraper blade towards the roll 11. immediately after the cutting stroke. In alternative forms, there may be a central groove round the roll 11 accommodating stationary nozzles near the scraper, or the roll 11 may be in two parts, with a central bearing. Specification 672,791 is referred to.