baber/WOPTO huggingface dataset:
Patent GB-414373-A (GB)
Title: Improvements in or relating to controllers for electric motor control systems
IPC: H01H19/635
Filed: 1933-01-30
Abstract: 414,373. Actuating controllers. WEST & CO., Ltd., A., and TAYLOR, W., Lewes Road, Brighton, Sussex. Jan. 30, 1933, No. 2879. [Class 38 (iii).] A controller comprises two contact carrying rods R1, R2, moved parallel to each other by separate cams C1, C2, operated by common link and lever mechanism, the contacts K1-K7 on each rod being closed in predetermined sequence by longitudinal movement of the rods, and the sequence for one rod being different from that of the other rod. The contacts are mounted on the rods by insulating bosses N1, N2, and springs S, and the rods which have rollers P4, at their lower ends, are carried in guides S5, S6. The cams C1, C2, when engage the rollers P4, and are mounted on a common shaft have slotted extensions C5, engaging roller P3 on a pin carried at the lower end of links P1, P2, pivoted to the casing at P6, P7. Links A3 connect the links P1, P2 to arms a1, a2, mounted on a shaft B operated by a pedal F. Movement of the pedal F operates the links P1, P2 against springs S1, S2, thereby rocking the cams C1, C2, to move the rods R1, R2 longitudinally against spring bias. The cams C1, C2 are disposed at such an angle that the left-hand contacts are operated first to exclude main resistances in a motor circuit, and then the right-hand contacts to control the shunt field. The adjustment of the contacts and their associated springs may be such that the right-hand contacts close progressively, whereas the top contact of the left hand rod is closed immediately after the bottom one, to maintain the main circuit subsequent to the opening of a normally closed left-hand contact.
Patent GB-798962-A (GB)
Title: Improvements in ovens heated by continuous recirculation of gases in a closed circuit
Inventor: OOMS HUGO
IPC: A21B1/10
Filed: 1955-02-01
Abstract: 798,962. Bakers' ovens; ovens. ATELIERS DE CONSTRUCTION GUILLAUME OOMS, SOC. ANON. Feb. 1, 1955, No. 2966/55. Class 51 (2). The baking chamber of an oven for baking food, foundry cores or moulds is subdivided by horizontal heating elements 11-20 formed with a corrugated top wall 22 along which are laid iron pipes 24, and a flat bottom wall lined with asbestos cement sheets 25. Hot gases from a furnace 3 traverse a main flue 5 and a U- shaped flue 6 straddling an inner jacket 2 and supplying the gases to the heating elements through valve-controlled ducts 26. The iron pipes 24 are said to cut down the transfer of heat by radiation and to encourage convection. Each heating element discharges through a rear outlet 28 into a waste gas flue 29 connected to the furnace 3 for recirculation of said gas. The heating elements are arranged in two tiers leaving a central opening through which passes the upright 31 of a wave carriage, said uprights supporting trays 30 in each baking compartment. The invention may also be applied to a continuous conveyer oven.
Patent GB-289943-A (GB)
Title: Improvements in or relating to automatic gas control devices
IPC: G05D16/06
Filed: 1927-02-02
Abstract: 289,943. Sugg & Co., Ltd., W., and Sugg, P. H. Feb. 2, 1927. Pressure - regulating valves.-A diaphragm-actuated gas governor has the valve spindle supported by spiral springs 8, 12 arranged in a plane substantially at right-angles to the direction of movement of the valve member. The inner convolutions of the lower spring 8 are clamped to the spindle by nuts 7, while the outer convolutions are held against a shoulder on the casing by a flanged cap 9. The outer convolutions of the upper spring are similarly clamped, while' the inner ones engage a knurled nut 10 adjustably secured to the spindle. The actuating diaphragm 15 is clamped to the casing by a cover 14 and to the spindle by nuts 17 engaging reinforcing discs of tin plate 16.
Patent GB-786751-A (GB)
Title: Synchronous motor
IPC: H02K19/08
Filed: 1955-02-02
Abstract: 786,751. Synchronous motors. KOLLSMAN INSTRUMENT CORPORATION. Feb. 2, 1955 [March 22, 1954], No. 3058/65. Class 35. A polyphase synchronous motor has a permanent magnet rotor with salient poles secured to its shaft and a hysteresis rotor mounted for rotation relatively to the shaft. As shown in Fig. 2, the tubular hysteresis rotor 32 is carried by bearings 33, 34 and has a projection 35 which can engage the pin 29 which keys the permanent magnet rotor 27 to the shaft 25. The two-pole magnetized rotor may be shaped as shown in Fig. 3a and the stator 12 has a threephase winding.
Patent GB-877846-A (GB)
Title: Improvements in or relating to the preparation of aromatic ortho-disubstituted acid amides and salts and quaternary ammonium compounds of said acid amides
IPC: C07C/
Filed: 1960-01-28
Abstract: Compounds of the formula <FORM:0877846/IV (b)/1> in which R1 represents a halogen atom or an alkyl group, R2 represents a hydrogen atom or an alkyl or alkoxy group, R represents a tertiary amino radical and n is the integer 2 or 3 are prepared by reacting an acid halide of the formula <FORM:0877846/IV (b)/2> with a tertiary amino alkylamine of the formula R(CH2)nNH2 to produce a basic acid amide, which may be converted to a salt or quaternary compound.  In an example 2,6-dimethyl-4-ethoxybenzoyl chloride is reacted with diethylethylenediamine.  Other products which may be obtained by reacting the acid halides with dialkylamino- and N-morpholinylethylamine and propylamines are listed. 2,6-dimethyl-4-alkoxy benzoyl chlorides may be prepared by etherifying a 2,6-dimethyl-4-hydroxy - bromobenzene, converting the bromine atom to a carboxyl group by a Grignard reaction, and reacting the resulting acid with thionyl chloride.  A list of these hitherto unknown intermediates is given.  2-chloro-6-methyl benzoyl chloride may be prepared from the nitrile.
Patent GB-750713-A (GB)
Title: Improvements in a cast steel railway wheel
IPC: B60B17/00
Filed: 1954-02-02
Abstract: 750,713. Railway wheels. GRIFFIN WHEEL CO. Feb. 2, 1954 [April 9, 1953], No. 3115/54. Class 144 (1). To reduce residual stresses a cast steel railway wheel has a wheel disc 16 connected with a central hub 10 by means of smooth arcuate constant radius hub fillets 42, 48 and with a rim 18 by means of smooth arcuate rim fillets 26, 28, tangents AA and BB to which in a common radial plane include a maximum angle C not exceeding 110 degrees. As shown, the rim is formed-with rounded shoulders 22, 24 which merge with the rim fillets 26, 28 and the disc comprises a straight-sided web of uniform thickness. The preferred maximum included angle of the rim fillet tangents is 106 degrees.
Patent GB-305102-A (GB)
Title: Improvements in and relating to the electromagnetic separation of complex ores
IPC: B03C1/23
Filed: 1929-01-30
Abstract: 305,102. British Thomson-Houston Co., Ltd., (Assignees of Seede, J. A.). Jan. 30, 1928, [Convention date]. Magnetic separators. - Ores are separated from each other or from gangue by allowing them to flow in an unconfined stream through a highfrequency alternating magnetic field whereby eddy currents created in differently conducting particles cause the particles to be diverted and separated. The particles may be allowed to fall from a hopper 11 past coreless coils 12, the different kinds of particles, being collected in two or more receivers 14, 15.
Patent GB-1192831-A (GB)
Title: Improvements in Dial Assemblies
Inventor: SINDALL CHARLES PETER
IPC: B23Q17/22
Filed: 1968-01-22
Abstract: 1,192,831. English/metric indicators. COLCHESTER LATHE CO. Ltd. 2 Jan., 1969 [22 Jan., 1968], No. 3182/68. Heading B3T. A dial indicator for indicating linear movement of a member, e.g. a machine tool slide, in either one of two systems of units, i.e. English or metric, comprises a rotatable hand wheel 1 drivingly connected to the member, a cylindrical sleeve 9 having on its external surface two circumferential scales marked one in each unit system respectively, and which is displaceable axially whereby in one axial position of the sleeve the hand wheel connects directly with the sleeve and one scale is in co-operation with a cursor 37 secured to the body 6 of the indicator, and in its other axial position the sleeve is rotatable by the hand wheel through gearing 17, 16, 14, and the other scale of units is in co-operation with the cursor. The sleeve 9 retained in each of its two axial positions by a spring-loaded ball and plunger 21, the ball 22 selectively engaging in tracks 28 and 27 on the hand wheel and gear 7 respectively. The plunger 24 is retained in an annular groove 25 in the internal surface of the sleeve and which provides a friction drive for the sleeve from the hand wheel or through the gearing whilst permitting displacement of the sleeve by the knurled portion 10 to effect zero setting between the scales and the index mark on the cursor. In an alternative embodiment a spring-loaded plunger is located in the hand wheel and is selectively engageable in either one of two tracks in the inner surface of the sleeve when it is in either of its two axial positions.
Patent GB-103893-A (GB)
Title: Improvements relating to Increasing the Heating Power of Coke.
Inventor: ROLLASON ARTHUR
IPC: C10L9/10
Filed: 1916-03-03
Abstract: 103,893. Rollason, A. March 3, 1916. Composition fuel.-In order to render the combustion of coke more complete, it is mixed with 1-3 per cent. of finely ground calcium carbonate or magnesium carbonate.
Patent GB-1440281-A (GB)
Title: Light-sensitive layer transfer material
IPC: G03F3/10
Filed: 1974-01-23
Abstract: 1440281 Photo-sensitive diazide layer transfer material HOECHST AG 23 Jan 1974 03218/74 Heading G2C A polyester film carrier pre-treated with an aqueous solution containing a halogenated saturated fatty acid, a wetting agent and a water-soluble polymer compatible in the solution with the fatty acid and then dried bears on the treated surface a light-sensitive layer containing an alkali-soluble phenolic resin, an ester or amide of an o-naphthoquinone-diazide-sulphonic acid and an acrylic resin. The fatty acid may be trichloro-acetic acid, 2, 2, 3- trichloropropionic acid or trifluoro-acetic acid. The wetting agent may be an anionic or non-ionic wetting agent. The water-soluble polymer may be polyvinyl alcohol, partially saponified polyvinyl acetate, a cellulose ether e.g. hydroxyethyl cellulose or carboxymethyl cellulose; or polyacrylamide. The aqueous solution may contain a cross-linking agent e.g. dimethylol urea (see Example 10). The phenolic resin may be cresol-formaldehyde novolac. The diazide may be the p-cumylphenyl ester of 1,2-naphthoquinone-2-diazide-4-sulphonic acid, an ester mixture of 2,3,4-trihydroxybenzophenone and 1,2-naphthoquinone-2-diazide-5-sulphonic acid, or 1,2-naphthoquinone-2-diazide-5-sulphonic acid n-bulylamide (Example 7). The acrylic resin may be polyethyl acrylate or polybutyl methacrylate. The light-sensitive layer may also contain a polyvinyl ether, a polyglycol, a copolymer with units which contain acid groups e.g. vinyl acetate crotonic acid copolymer (Examples 2 and 4-8) or n-hexyl methacrylate-methyl methacrylate-methacrylic acid copolymer (Example 8), or a pigment (Examples 1, 3-6 and 8). The surface of the lightsensitive layer remote from the film carrier may be covered with a removable covering sheet (Examples 1, 2, 4, 6 and 7). The material may be used to produce a screen printing stencil, printed circuit board (Examples 2, 6), integrated circuit, an intaglio or relief image printing plate or colour proof (Examples, 1, 5).
Patent GB-120832-A (GB)
Title: Improvements in Electric Controllers of the Barrel or Drum Type.
IPC: H01H19/10
Filed: 1918-02-23
Abstract: 120,832. Veritys, Ltd., and Pipkin, W. G. Feb. 23, 1918. Controllers, drum.-The barrel f with its contacts f<3> is introduced into the casing through the hole e, which is then closed by the plate f<5>, which carries a bearing for the controller spindle. The plate is bolted down over a rubber ring h<2>, and the lower end of the spindle rests in a socket d. A stop-disk f<4> and engaging arm j are provided, and the plate f<5> has a notch engaged by a lever catch in the zero position of the controller.
Patent GB-860321-A (GB)
Title: Preparing beta-hydromuconic seminitrile and esters thereof
Filed: 1959-01-30
Abstract: b -Hydromuconic seminitrile and the methyl and ethyl esters thereof are obtained by treating at temperatures ranging between 10 DEG  and 100 DEG  C. the products obtained by hydrolysis of 1 - chloro - 4 - cyano - 2 - butene at temperatures ranging between 0 DEG  and 40 DEG C. by means of concentrated hydrochloric acid in the presence of water, methyl alcohol or ethyl alcohol, respectively, with hydrocyanic acid or sodium cyanide in an aqueous solution containing copper(ous) salts, sodium salts, copper metal and a buffer comprising calcium or magnesium carbonate.  The water, methanol or ethanol used during the hydrolysis of the chlorocyanobutene may be admixed with inert solvents and the hydrolysis products may be directly treated with hydrocyanic acid or its sodium salt without isolation from the reaction mixture. Specified intermediates obtained by hydrolysis of the 1 - chloro - 4 - cyano - 2 - butene are: 5 - chloro-3-pentenoic acid and the methyl ester, ethyl ester and amide thereof.  Use of the latter amide yields the amide of beta-hydromuconic seminitrile as an intermediate product, requiring hydrolysis with hydrochloric acid to provide beta-hydromuconic semi-nitrile.
Patent GB-369714-A (GB)
Title: An improved electric immersion heater
IPC: H05B3/48
Filed: 1931-02-05
Abstract: 369,714. Wire resistances. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and RYCROFT, J. L., of General Electric Co., Wembley, Middlesex. Feb. 5, 1931, No. 3665. [Class 37.] A heating element for. ar immersion heater comprises a cast iron former 1 with twc grooves 2, 3 arranged along its length on each of two opposite sides, each pair being united at one end of the former. A coiled resistance wire 4 is embedded in fireclay or other refractory material which is finished off level with the top of the grooves. A casing 6 of aluminium, brass, or other metal is then cast around the element. The heater may be of circular or other cross-section instead of rectangular as shown.
Patent GB-521041-A (GB)
Title: Apparatus for forming or dressing grinding wheels for use in form-grinding operations
IPC: B24B53/08
Filed: 1938-11-08
Abstract: 521,041. Trueing grinding-wheels. COVENTRY GAUGE & TOOL CO., Ltd., WAINWRIGHT, J. E., and HARLEY, S. J. Nov. 8, 1938, No. 3675/40. Divided out of 521,001. [Class 60] Grinding-wheels for use in form grinding, for example for grinding hobs used to generate splines, are trued by a tool 9 mounted on a yoke 7 connecting spring arms 5, 6 carried by a slide 4. The yoke also carries a stylus 8 engaging a former 2.
Patent GB-346889-A (GB)
Title: Improvements relating to apparatus for humidifying paper or mill board webs
IPC: D21G7/00
Filed: 1930-02-04
Abstract: 346,889. Humidifying or conditioning paper, millboard, &c. BERTRAM, J.IN. and GRAY, F. W.. 141, Leith Walk, Edinburgh. Feb. 4, 1930, No. 3705. [Class 96.] Apparatus for conditioning paper &c. comprises a closed chamber containing power-driven sparred drums mounted on an open framework in tiers so that paper may be trained thereover, characterized by steam-heated trays containing water being located below the drums, to cause water vapour to impinge on both sides of the paper during its passage from drum to drum. Paper 8 from a let-off reel 11 with a tension device 12 passes over the drums 4 which comprise spaced rings mounted on shafts and spanned by spars. The drums are driven by a belt 5 on pulleys 6, automatic leading .tapes 7 being used for the paper. The trays 9 extend from end to end of the drums 4, the amount of water vapour being varied by regulating the steam supply pipes 10. The drive of the drums 4 is variable and may slightly exceed the speed of the paper. Fans may be installed in the roof of the chamber.
Patent GB-196422-A (GB)
Title: Improved means for recording declarations made in the game of bridge
IPC: A63F1/18
Filed: 1922-02-09
Abstract: 196,422. Winter, E. A. Feb. 9, 1922. Indicators, declaration.- A device of the kind described in Specification 107,416 for recording declarations made in the game of bridge comprises a base, two pointers mounted on a common pivot, a series of numbers ranging from 1 to 6 arranged in an arc of a circle whose centre coincides with the pivot and a series of card indicating devices arranged in another arc of the same circle. The pointer b indicates against numerals e preferably contained in small circles and the pointer c indicates the trump suit or "no trumps." A pointer g indicates "doubled" or " redoubled. " The pivots d, k may consist of bifurcated paper fasteners. The device may be combined with an ordinary bridge scoring block.
Patent GB-1424776-A (GB)
Title: Reversing switch
IPC: H03K17/64
Filed: 1973-01-25
Abstract: 1424776 Control of D.C. motors J L FEAVER 11 May 1973 [25 Jan 1973] 3777/73 Heading H2J [Also in Division H3] A D.C. motor m is controlled by a bridge comprising transistors a, b, c, d, diodes g, h, g<SP>1</SP> h<SP>1</SP>, resistor w and diode l, the transistors a,b and c, d being controlled by respective drive circuits including transistors pa, qa, ra and pb, qb, rb, and the arrangement being such that when input command signals, obtained from independent sources, are simultaneously absent or present at the bases of transistors pa, pb, transistors a, c are turned on and transistors b, d turned off or transistors b, d are turned on and transistors a, c are turned off, the presence of an individual command signal at transistor pa or pb respectively turning off transistor a and turning on transistor b or turning off transistor c and turning on transistor d, whereby pairs of transistors in diagonally opposite bridge arms are simultaneously conductive to drive the motor in one or other direction. When the motor is de-energised by the simultaneous absence or presence of signals at transistors pa, pb, braking current flows in one of the circuits formed by members a h, c, g, b, h<SP>1</SP> or c, g<SP>1</SP>, the first two mentioned circuits including members w, l whereby maximum or limited braking current flows according to the direction of motor rotation prior to de-energisation. Resistor w may be adjustable and diode l may be replaced by a Zener diode or two such diodes series connected back-to-back, whereby the braking current can be preset or varied between maximum and limited values above and below the threshold value of the diode(s). Full control of current may be obtained by replacing the diode(s) by transistors whose impedance is variable. Diodes g, g<SP>1</SP>, h, h<SP>1</SP> form series/parallel circuits with the transistors a, b, c, d to clamp reverse transient voltages to a low value when the motor is switched off. The motor speed may be controlled by suitable variation of the frequency or pulse width of the command signals at transistors pa, pb. Members n, x, y, z, s, t, u form a low impedance reference voltage source for both drive circuits, which change over the states of transistors a, b or c, d with a breakbefore-make action.
Patent GB-571075-A (GB)
Title: Improvements relating to a photographic lens diaphragm construction
IPC: G03B9/08
Filed: 1944-03-01
Abstract: 571,075. Photographic lens diaphragms. KODAK, Ltd. March 1, 1944, No. 3857. Convention date. March 13, 1943. [Class 98 (i)] The iris diaphragm of a photographic lens is mounted in a shutter or other cusing, the bladeoperating ring 14 being adjusted by a pinion 21 which extends through an aperture 22 in the casing and engages a gear sector 20 on the ring. The pinion is rotated by an external gear sector 33 which is situated between the casing wall and a cover-plate 27 which prevents ingress to the casing of dirt or moisture through the aperture 22. One end of the pinion 21 is journalled in the plate 27, and the segment 33 is guided for arcuate movement by lugs 35 on it engaging curved slots 36 in the plate.
Patent GB-449340-A (GB)
Title: Improvements in or relating to cooling arrangements in supercharged internal-combustion engines
IPC: F02B29/04
Filed: 1935-02-06
Abstract: 449,340. Cooling charge. BRISTOL AEROPLANE CO., Ltd., FEDDEN, A. H. R., and ANDERSON, G. O., Filton House, Bristol. Feb. 6, 1935, No. 3865. [Class 7 (ii)] A supercharged radial-cylinder internal-combustion engine for use on aircraft, having charge-cooling radiators each forming part of a conduit leading from a compressor to a cylinder, is provided with a number of conduits, each extending from the compressor to a cylinder, each conduit comprising a group of oval tubes forming a radiator through which the compressed air or mixture passes and which are arranged each with the major axis of the oval parallel to the direction of air flow past it I produced during flight of the aircraft in which the engine is mounted. The casing 15 of a supercharging-fan 16 supplying air &c. to cylinders 13 has short branches 17 each connected to a header 18 for a bank of oval tubes 19 connected by a header 24 to a pipe 20 feeding the inlet ports of two adjacent cylinders. The major axes of the tubes lie fore-and-aft of the aircraft and are arranged behind the spaces between the adjacent cylinders so that cooling is effected by the air flowing between the cylinders, the flow being increased, if desired, bv means of a fan. Each end of each tube is expanded to receive an hexagonal nipple 22, the nipples being arranged in honeycomb fashion in the headers. To facilitate assembly, the pipe 20 has an integral limb 25 with a flange 26, and a detachable limb 27 with a flange 29 ; a baffle 34 divides the air into two streams. In a modification, Fig. 5 (not shown), each radiator is connected to both inlet ports of a cylinder and is at an inclination to the cylinder centre, the axes of the tubes being at an angle to the fore-and-aft line of the aircraft, and in a second modification, Fig. 9 (not shown), each branch 17 is connected to two radiators, one leading to an inlet port of one cylinder and the other to the adjacent inlet of an adjacent cylinder. U.S.A. Specification 1,935,186 is referred to.
Patent GB-1058615-A (GB)
Title: Process for the manufacture of ceramic products
IPC: C04B32/00
Filed: 1964-01-30
Abstract: 1,058,615. Ceramic bodies. C. A. KUMPEN. Jan. 30, 1964 [Nov. 19, 1963], No. 4007/64. Heading C1J. Ceramic bodies are prepared by mixing fly ash with a minor proportion of one or more mineral binders with or without fillers, shaping and firing to a temperature at least equal to that at which the fly ash or mixture becomes plastic, the fly ash containing not more than 12% of combustible material and having the composition 44-51% SiO 2 , 20-29% Al 2 O 3  + TiO 2 , 5-8%.Fe 2 O 3 , 5-8% CaO, 1-2% MgO. 4-7- 0 % K 2 O + Na 2 O and 3-8À5% ignition loss. Binders specified are bentonite, pseudobentonite, fuller's earth, montmorillonite and tar. Fillers specified are -peat, sawdust and urea or phenol-formaldehyde resins. Fluxes may also be added. Bodies of up to 50% porosity may be obtained.