baber/WOPTO huggingface dataset:
Patent GB-1207413-A (GB)
Title: Improvements in or relating to pulse generators
Inventor: SHOJI MASAKAZU
IPC: H03K3/02
Filed: 1968-01-26
Abstract: 1,207,413. Adding circuits. WESTERN ELECTRIC CO. Inc. 26 Jan., 1968 [1 Feb., 1967], No. 4221/68. Heading G4G. [Also in Divisions H1 and H3] In a circuit including a semi-conductor device 11 having a voltage controlled differential negative resistance characteristic and capable of having established in the device a travelling electric field domain, a shunt path 17 is connected across part of the device so that when a domain 16 is present in that part the resistance of the shunt path 17 is lower than the resistance exhibited by the part and when the domain is not present in that part the resistance of the shunt path is higher than the resistance exhibited by the part. The GaAs device 11 is biased so that domains produce an output pulse (21A, 21B, Fig. 2, not shown), between propatation of each domain. As each domain passes the part of the device having a resistive oxide layer 17 the current preferentially passes via this resistance layer until the domain has reached the end of the layer 17. When the current is passing preferentially via the resistance layer an additional current pulse (22) is generated in the load current. When the switch 19, which may be an electronic switch, is closed the additional current by-passes the load to earth and no additional output current pulse (22) is produced. By providing the GaAs device with more than one reactive layer (36A, 36B, 36C, Fig. 3, not shown), each connected to earth via a switch (38A, 38B, 38C) and by applying pulses simultaneously on parallel lines which control the operation of the switches the switches are opened and a plurality of spaced output pulses corresponding in number to the number of input pulses is obtained. In a modified device (Fig. 4), shunt paths are provided externally of the device by connecting electrodes mounted along the length of the device so that a complex output waveform (Fig. 5, not shown), is produced. By providing a plurality of shunt paths side-by-side on the semi-conductor body (Fig. 6), AND and OR gating or summing may be provided. The resistive layers 17 may be photo-sensitive so as to be of reduced resistance when illuminated or may be of an intrinsic semi-conductor having a control electrode. The resistance of the shunt path should be sufficiently high so a not to inhibit the domain.
Patent GB-468401-A (GB)
Title: Improvements in rotary pumps
IPC: F04C14/22
Filed: 1936-02-12
Abstract: 468,401. Rotary pumps. MOTLEY, L. Feb. 12, 1936, No. 4242. [Class 110 (ii)] The output of a rotary pump is varied automatically in accordance with the delivery pressure. A rotor 1 has sliding vanes 2 which pump fluid from an inlet 5 to a delivery port 6. The delivery pressure acts through a pipe P upon a piston 17 which may move a slidable block 7 against the pressure of a spring 18, to vary the eccentricity of the rotor 1 in the stator block 7. The block 7 is pressed against the surfaces of slides 8 by a pivoted member 13 under pressure of a spring 14, through a ball 15. A groove 28 allows pressure fluid to enter the slots under the vanes and assist springs 4 to press the vanes outwards. A non-return valve 24 is placed in the delivery pipe. An inlet pipe 22 is fitted to a chamber 21 which supplies the pump inlet 5. Specification 411,161 is referred to in the Provisional Specification.
Patent GB-558388-A (GB)
Title: Improvements in or relating to domestic sinks
IPC: E03C1/26
Filed: 1942-03-30
Abstract: 558,388. Sinks. SINCOCK, R. J. E. March 30, 1942, No. 4242. [Class 26] [Also in Group VI] A garbage receptacle for use in combination with and at the side of a domestic sink comprises a basin A and a container G, having perforations in the middle of the bottom, which fits into the basin and has distance pieces J thereon, whereby a free air-space is provided between the walls and bottom of the container and the basin, the bottom of the basin being provided with an outlet opening B, independent of the sink outlet, for draining liquid away from the garbage in the container, so that such liquid is prevented from entering the sink. The basin may be secured to the underside of a draining board E below an aperture therein, said aperture having a lid K the surface of which lies flush with the surface of the draining board. The basin may, alternatively, be arranged in a corner of or at the side of the sink M, Figs. 2 & 8, the top of the partition A<SP>1</SP> between sink and basin being below the level of the sink top, so that the basin forms an overflow chamber for the sink. The outlet B from the basin may be connected by a passage P to the sink outlet N, said passage being formed in the base of the unit, as shown in Fig. 2 so that only one waste pipe fitting is necessary, or separate pipes may be employed as shown in Fig. 3. A rinsing basin Q, Fig. 3, may be arranged at the side of the sink opposite to the basin A, the outlet pipe R from the rinsing basin being quite separate, or being connected to the sink outlet pipe N. The basin A may be provided with oppositely disposed bearing members L, Fig. 1, for the reception of trunnions or stub shafts of a rotary drum scraper for potatoes or other vegetables, in substitution for the garbage container. The scraper may be in the form of a metal drum having inwardly directed rasp teeth formed by punching out tongues of the metal. Reference has been directed by the Comptroller to Specification 339,467, [Class 26].
Patent GB-392299-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K27/10
Filed: 1932-02-12
Abstract: 392,299. Alternating-current commutator motors. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London, and MAGGS, A. H., The Briars, Wellsway, Keynsham, near Bristol. Feb. 12, 1932, No. 4251. [Class 35.] Motors, controlling.- Repulsion or repulsioninduction motors, such as those described in Specification 208,222, [Class 35, Dynamo-electric generators &c.], are rendered suitable for connection between line and line or line and neutral of a three-phase supply by providing them with a stator winding arranged in coaxial halves, with an auxiliary winding having about 15 per cent of the effective turns of the main winding in series with each half. In the arrangement shown, the auxiliary windings A are tapped off portions of the main windings M, and are connected in series with the main winding, and in parallel with each other, as shown in Fig. 1, for operating the motor between line and neutral. For operating between line and line, the main windings are connected in series and the auxiliary windings are cut out of circuit, as shown in Fig. 2.
Patent GB-228715-A (GB)
Title: Improvements in wrist watch cases and other articles of jewellery or ornamentation
IPC: G04B37/14
Filed: 1924-02-19
Abstract: 228,715. Hawkswell, G. R., (trading as Woodmansey & Son). Feb. 19, 1924. Attaching watches and other articles to person.- The transverse limb of each of the loops B by which the case of a wristlet watch A, compass, cachou-box, neck ornament, or like article of jewellery or ornament is secured to the person, is made tubular with the central section removable and detachably held in place by a pin D. The central section C<2> is removed when it is desired to attach a bracelet C<1> to the watch, as shown at the upper part of the Figure. The lower portion of the Figure shows the method of applying a wristlet strap C to the watch &c., the removable section being replaced and retained in position by the hinge-pin D.
Patent GB-1189402-A (GB)
Title: Improvements Relating to Colour Television
Inventor: PARKER FREDERICK GORDON
IPC: H04N9/75
Filed: 1968-01-26
Abstract: 1,189,402. Colour television. BRITISH BROADCASTING CORP. 13 Nov., 1968 [26 Jan., 1968], No. 4293/68. Heading H4F. Relates to a colour television system in which apparatus is provided for producing a composite picture from a foreground and a background picture wherein the background of the foreground picture is illuminated with light of a predetermined colour, said apparatus including a means for converting the foreground picture into electrical signals and means for subtracting from the electrical signal due to said light of a predetermined colour a further electrical signal due to a combination of one or more of the colours in the foreground picture to form a switching signal which operates a switch 20 to route either the electrical signal due to the foreground picture, or the electrical signal due to the background picture to an output 21. The invention as applied to a PAL colour television system and wherein the predetermined colour is blue is shown in the Figure. The outputs 10, 11 and 12 of the camera scanning the foreground picture are combined in a matrix 23 to form the B-Y colour difference signal where the luminance signal is derived from the R, G and B signals in a manner such as: Y = 0À3R + 0À6G + 0À1B. The switching signal generator is arranged to produce a switching signal when, for example B-Y is less than 0À8, the switch being arranged such that, when a switching signal is present, the foreground picture signal is passed to the output 21. In this way, errors caused by blue highlights in the foreground picture are reduced.
Patent GB-642340-A (GB)
Title: Improvements in or relating to apparatus for and methods of bending sheet metal
IPC: B21D5/02
Filed: 1948-02-13
Abstract: 642,340. Making refrigerator casings. COLDAIR, Ltd., and SAUNDERS, N. F. T. Feb. 13, 1948, No. 4319. [Classes 83 (ii) and 83 (iv)] Flanging.-Sheets for casings of refrigerators 2 are provided on the front edge with a U- shaped pocket at right angles to the plane of the sheet and with a flanged rear edge in a single press. The sheet 4 is inserted between dies 8, 9 and is flanged at the rear edge and then reversed and bent zig-zag between a bottom die 12 and the die 9 which is spring supported. The sheet is then transferred to the back of the press and dies 15, 16 and a spring supported die 18 co-operate to flatten the U-shaped edge and to bend it at right angles to the plane of the sheet. In a modification, Fig. 3 (not shown), the dies 8, 9 are reversed to avoid the necessity of turning the sheet lengthwise.
Patent GB-275102-A (GB)
Title: Improvements in rotary folding-off mechanisms for printing machines
IPC: B41F13/54
Filed: 1927-02-16
Abstract: 275,102. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). Feb. 16, 1927. Folding paper.-In a rotary folder for acting on printed webs of the kind in which the fold is effected by tucking the cut web into nipping-jaws 12, 13, on a carrier 10, and the folded product is delivered by grippers 23 of a delivery mechanism, resilient means such as springs 27 are provided on the carrier and are put under tension by the product and act to free the product from the jaws and direct it into the path of the grippers 23 as shown in Fig. 5. The spring 27 and jaws 12, 13 are disposed in recesses 18 in the walls of the carrier 10, and the outward movements of the springs is limited by stops 33. The springs 22 are secured to the cylinder by screws 29 passing through bent portions 28 of the springs, and are provided with humps 31 which form stops or guides for the folded edges of products, and assist to direct the folds to the path of the grippers 23.
Patent GB-323671-A (GB)
Title: An improved material for window glazing and similar purposes
IPC: B32B17/08
Filed: 1929-02-12
Abstract: 323,671. Colefax, M. A. Feb. 12, 1929. Right to Patent relinquished. Compound transparencies.-A splinterless glass which is permeable to ultra-violet rays comprises a sheet of cellulose acetate arranged between sheets of the glass sold commercially under the Registered Trade Mark " Vita," or other glass which transmits ultra-violet rays.
Patent GB-688273-A (GB)
Title: Improvements in or relating to vacuum tube amplifiers
IPC: B07B13/065
Filed: 1950-02-23
Abstract: 688,273. Valve amplifying circuits. COULTER, W. H. Feb. 23, 1950 [March 21, 1949], No. 4668/50. Class 40 (vi). In an amplifier comprising two valves with their anode-cathode paths in series for D.C., the grids being driven in push-pull and the output load 62 being connected between a point of zero A.C. potential and the point 60 which is common to the cathode circuit of the one valve and the anode circuit of the other, the valve 54 is driven directly from the input and the valve 541 over a phase-reversing valve 67; negative feed-back in the valve 54<SP>1</SP> due to valve 54, which forms an impedance in its cathode circuit, is counterbalanced by positive feed-back obtained by returning the cathode of the phase-reverser 67 to a potentiometer 71 across the output load. In another embodiment, Fig. 2 (not shown), the grid connections of the valves 54, 54<SP>1</SP> are reversed, so that valve 54 is driven via the phasereverser; the feed-back from the output to the phase-reversing valve is then negative in nature, being made to equal the feed-back on the valve 54<SP>1</SP> due to the presence of valve 54 in its cathode circuit.
Patent GB-1111681-A (GB)
Title: Improvements in or relating to the calcination of alumina
Inventor: HILL VERNON JAMES
IPC: C01F7/021
Filed: 1964-08-04
Abstract: A method of calcining soda-containing alumina comprises incorporating in the alumina a proportion of silica or siliceous material capable of combining with soda at temperatures greater than 1100 DEG  C. and fluidizing the mixture at a temperature greater than 1100 DEG  C., but preferably not greater than 1450 DEG  C.  The silica or siliceous material may be incorporated in a ratio of 2 to 20% by weight of the alumina, and may be in the form of silica gel or sand. To permit separation of the particles of silica or siliceous material from the particle of alumina, the particles are arranged to have different particle sizes, e.g. 72 to 10 B.S. mesh for the silica or siliceous particles and 50 to 325 B.S. mesh for the alumina particles.  The silica or siliceous material should preferably have a particle size larger than that of the alumina by at least 25 B.S. mesh.  The mixture of alumina and silica or siliceous material may be fluidized with nitrogen and the bed heated electrically with an external graphite resistor.
Patent GB-1164008-A (GB)
Title: Process for the Suspension Polymerization of Vinyl Chloride
IPC: C08F14/06
Filed: 1967-01-31
Abstract: 1,164,008. Vinyl chloride polymers. WACKEB-CHEMIE G.m.b.H. 31 Jan., 1967 [14 March, 1966], No. 4692/67. Heading C3P. Vinyl chloride is polymerized in aqueous suspension with a monomer soluble catalyst using as sole dispersant a methylhydroxypropyl cellulose having a viscosity of 50-500 cps. at 20‹ C. in a 2% aqueous solution. Up to 10%, based on vinyl chloride, of vinyl acetate, may also be present. Specified catalysts are diacetyl-, didecanoyl-, acetylbenzoyl-, dilauroyl-, dibenzoyl-, bis-2,4-dichlorobenzoyl- or ditert.-butylperoxides, diisopropylpercarbonate, tert.- butyl-perpivalate, acetylcyclohexanesulphonyl peroxide and azobutyric acid dinitrile. Polymerization is effected at 0-160‹ C. at pH 4-9, e.g. by adding sodium bicarbonate. The products may be mixed with paste grade emulsion polymers or copolymers of vinyl chloride and the mixture mixed with plasticizer and optionally diluent to form a plastisol or organosol.
Patent GB-426440-A (GB)
Title: Improvements in road rollers
IPC: E01C19/27
Filed: 1934-02-13
Abstract: 426,440. Road rollers. BOX, N. E., c/o Box Grouting & Spraying Co., Ltd., Hartington Road, Broadheath, Altrincham, Cheshire. Feb. 13, 1934, No. 4694. [Class 6 (i)] A manually-operated, horse-drawn, or mechanically-propelled roller comprises two or more pairs of rubber-covered wheels A<1>, A<2>, each pair being mounted on a pivoted stub axle A so that each wheel may move vertically relative to the other. In the front roller of a steam roller the wheels A', A<2>, have solid rubber tyres and the axles A are preferably rectangular and are each pivoted on a central pin B carried between two brackets or angle irons c bolted to a longitudinal bar or girder C fixed to, or forming part of, a rectangular or other frame C<1>. Chains &c., connect the frame C' to the usual steering-gear.
Patent GB-1433064-A (GB)
Title: Thermosettable synthetic addition polymers
IPC: C08F2/26
Filed: 1974-02-01
Abstract: 1433064 Production of thermosetting polymer dispersions CANADIAN INDUSTRIES Ltd 1 Feb 1974 [1 Nov 1973] 04697/74 Heading C3P The process of Specification 1,417,713 for producing a thermosetting aqueous dispersion by polymerizing in water at least one α,#- ethylenically unsaturated main monomer which is very slightly soluble in water, with at least one α,#-ethylenically unsaturated monomer containing a reactive group, in the presence of a surfactant, suspending agent or mixture thereof, and also in the presence of at least one modifier containing a complementary reactive group and which is a plasticizer selected from mono epoxy compounds epoxy resins, melamineformaldehyde resins and ureaformaldehyde resins, is modified by including in the monomer mixture a monomer selected from water soluble salts of vinyl sulphonate and of allyl sulphonate, and sulpho-esters or salts thereof of the formula wherein R is a vinyl or alpha-substituted vinyl group, Q is a divalent hydrocarbon group having its valence bonds on different carbon atoms and M is a hydrogen ion or a cation selected from Na, K, Li, ammonium or substituted ammonium groups NR<SP>1</SP> 4  wherein each R<SP>1</SP> is H, C 1-4  alkyl, or C 1-3  alkanolamine, or where two R<SP>1</SP> groups and the nitrogen atom represent together a morpholine residue, and the remaining R<SP>1</SP> groups are as already defined. A long list of such monomers is given. An example of the monoepoxy plasticizer/modifier is, the reaction product of epichlorohydrin and a C 9-11  mixture of saturated tertiary alpha carbon atom carboxylic acids. Some of the reactive modifier may be replaced by a non-reactive modifier such as a monomeric ester, polymeric ester and polyalkylene glycols. The polymerized dispension may also be mixed with an external cross-linking agent containing at least two complementary reactive groups, and also, if desired, a water soluble resin. Examples of main monomers are styrene, C 1-4  alkyl methacrylates, -acrylates, -itaconates, -maleates, and -fumarates, vinyl esters, and vinyl chloride. Examples of monomers containing reactive groups are acrylic-, methacrylic-, itaconic-, maleic- and fumaric acids, acrylamide and its C 1-4  substituted derivatives, N-alkoxy acrylamides, diacetone acrylamide, maleamic acid, maleamide, fumaramide, N-mono-alkyl/aryl substituted amides, hydroxyethyl methacrylate and hydroxy-propyl methacrylate.
Patent GB-608071-A (GB)
Title: Improvements relating to safety valves
IPC: F16K17/04
Filed: 1946-02-14
Abstract: 608,071. Safety valves. HOPKINSONS, Ltd., and BROWN, R. L. Feb. 14, 1946, No. 4699. [Class 135] In a safety valve for high-pressure steam generators in which the part of the valve casing which is exposed to the steam pressure when the valve is closed is made separate from the remainder of the valve casing, two divergent outlet branches are provided on opposite sides of the valve casing. As shown, the part a on which the valve member b seats is spigotted into the remainder c of the valve casing and has a flange, whereby the parts may be bolted together. The divergent outlets d, e are of circular section at their outlet ends but gradually become elliptically towards their valve seat ends where the outlet clearance in the valve casing extends completely round the valve seat. This arrangement avoids eddies and noise in the issuing stream.
Patent GB-554581-A (GB)
Title: Improvements in electrical speed regulators
IPC: H02P7/34
Filed: 1942-04-10
Abstract: 554,581. Automatic control systems for electric motors &c. ; electromagnetic switches. ALMANNA SWNSKA ELEKTRISKA AKTIEBOLAGET. April 10, 1942, No. 4733. Convention date, April 10, 1941.. [Class 38 (iv)] [Also in Group XXXVII] Speed.-A speed regulator particularly for a Ward-Leonard drive at low speed, e.g. when " inching a  printing press, comprises contacts 5, e.g. normally short-circuiting a resistance 4 in the field circuit of the generator 1 which are opened against spring tension when the desired low speed is exceeded through an electrodynamic slip coupling, i.e. by the traction between a squirrel cage or other closed A.C. type winding 7, driven, e.g. by the motor 2, and a D.C. magnet 6 coupled to one of the contacts. The regulator contacts close again at normal higher speeds of the drive.
Patent GB-108439-A (GB)
Title: Improvements in Button Fasteners.
Inventor: ELLIOTT WILLIAM ELIJAH
IPC: A44B1/36
Filed: 1917-04-03
Abstract: 108,439. Elliott, W. E. April 3, 1917. Buttons and button-fasteners.-In fasteners of the type in which a button is secured to a washer disposed on the other side of the fabric by means of a staple having its legs passed through the fabric and a pair of diametrically-opposed holes in the washer, and the ends then clinched inwardly into a central hole, grooves 10 disposed between the pair of holes 8 and the central hole 9 are formed in the underside of the washer 6 into which the legs of the staple 4 are clinched before being bent into the central hole, and the washer is provided with an annular flange 7 bearing against the fabric. The washers 6 are stamped in a continuous strip, Fig. 6, from a strip of metal. When the washers are to be applied singly by means of a hand tool, a second pair of holes 11 is provided connected to the central hole by means of grooves 10<a>, in order to position the washer on the tool.
Patent GB-700373-A (GB)
Title: Appliance for use in raising sugar beet and other roots
IPC: A01D27/02
Filed: 1951-02-28
Abstract: 700,373. Harvesting root-crops. SALOPIAN ENGINEERS, Ltd., and HORNSHAW, R. May 21, 1952 [Feb. 28, 1951], No. 4797/51. Class 6 (3) Relates to root-crop harvesters of the type comprising a wheeled frame 10 carrying a floating, driven, feeler-disc 24, controlling a topping- knife 30, the cut tops being thrown transversely by rotary flails 50 on to a conveyer 51, the machine further comprising a share 68 and deflector 69 delivering excavated material to a cage 70 revolving about a transverse axis. According to the invention, the frame 10 rests rearwardly upon wheels 13 and forwardly upon a drawbar 22 attached to the towing tractor, the disc 24 and cutter 30 being carried by a subframe 27, 29, 31 pivoted to the frame 10 about a transverse axis 28. The sub-frame can be raised about the axis 28 by a lever 33 and cable 32. The rear wheels 13 are mounted on bellcranks 15, 17, and are separately adjustable by screws 20. The drawbar 22 is mounted on a vertical pivot 23 on the frame 10 and can be swung laterally by steering mechanism 43, 44, accessible to an operator on a seat 46, to steer the implement along a crop-row. The endless conveyer 51 delivers the cut tops to a cage-like hopper 53 having a drop-down base operable by the operator through a lever 67. The share 68 is carried by a pillar 71 slidable vertically, to vary the working-depth, through . a lever 76. Roots, deflected transversely by a rotary disc 69, enter the revolving cage 70 which is closed on the opposite side by rings 84 and 85, the latter rings being fixed and extending only to the horizontal mid-plane of the drum. Paddles 86, within the drum, carry the roots around to fall on to an endless conveyer 88, Fig. 6; which transports them to an offset hopper 90. This is also of gridded construction and has a portion 93 which is opened by a bell-crank 100 operable from the seat 46 through a lever 102 and cable 101. The conveyers 51 and 89, the disc 24, the flails 50 and the cage 70 are all driven from the tractor through a jointed shaft 105 and chain transmissions.