baber/WOPTO huggingface dataset:
Patent GB-225244-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K5/124
Filed: 1924-11-24
Abstract: 225,244. British Thomson-Houston Co., Ltd., (Assignees of Rice, C. W.). Nov. 23, 1923, [Convention date]. Dynamos and motors, cooling and ventilating; enveloping in special media.-In machines provided with a circulation of gas lighter than air, for example hydrogen. and with a liquid seal surrounding the rotor shaft 3 to prevent escape of the gas from the casing, means are provided in association with the seal for preventing escape of the gas by admixture with the liquid. Liquid from the seal is passed by a pipe 8 into a chamber 9 wherein a level is maintained by a float valve which allows excess liquid to run into a tank 13. Gas mixed with the liquid separates in the chamber 9 and returns by a pipe 10 to the machine casing. Liquid from secondary sealing points and from the bearings is led by pipes 31, 32, 34 directly into the tank 13, which is connected to a vacuum pump 14. A pump 15 forces the oil from the tank 13 through filters 16 to a reservoir 17, from which a pump 18 delivers it to the seal. A two-way valve 21 is controlled by a diaphragm 23 exposed on one-side to the pressure of the gas in the machine casing, and on the other side through a pipe 27 to the pressure of the liquid in the seal. When the gas pressure is high, liquid flows by a pipe 20 to the valve and then by a pipe 25 directly to the seal, and when the gas pressure is low the liquid flows from the pipe 20 through a pipe 35 and the bearings to the seal and back to the tank 13 by pipes 25, 28. A modification is described wherein the single tank 13 is replaced by two, one receiving the liquid from the chamber 9 and the other that from the pipes 28, 31, 32, 34. The tank connected to the chamber 9 is heated to expel gas from the liquid, and the gas is pumped back to the machine casing. The internal arrangements of the machine may be as described in Specification 104,250.
Patent GB-1395493-A (GB)
Title: Apparatus for controlling the conductivity of an electro lyte
IPC: G05D21/02
Filed: 1971-06-16
Abstract: 1395493 Induction conductivity control DEFENCE SCRETARY OF STATE FOR 11 July 1972 [16 June 1971] 28189/71 Heading G1 [Also in Division C7 and G3]  The conductivity of an electrolyte which may be used in electro-chemical machining is maintained within desired limits by automatically controlling valves in a heat exchanger to heat or cool the electrolyte. The electrolyte temperature may also be regulated automatically. As shown, a conductivity cell includes two windings whose coupling depends on the conductivity of the solution. A squarewave signal is applied to one of the windings, and the resultant output signal from the other winding is rectified to produce a signal indicative of conductivity. This signal is supplied to a meter and chart recorder and is also compared with desired pre-set limits in a Schmitt trigger circuit PCB2 to energize triac 1 or triac 2 if the conductivity is too high or too low. The triacs operate motorized valves controlling the admission of steam or water to a heat exchanger controlling the temperature of the electrolyte. A resistance probe may be employed to sense the electrolyte temperature, and is connected in a bridge circuit to produce output signals if the temperature lies outside a pre-set range. These signals may operate visual and audible alarms and also indicate that salt or water should be added to the electrolyte solution. By changing over switches S2B, S2C the temperature measurement can be used to control the heat exchanger valves while the alarm arrangement responds to the conductivity signal. The valves can be disconnected for testing by driving independently of the triac circuits.
Patent GB-1286268-A (GB)
Title: Improvements in and relating to bases for supporting purposes
Inventor: NICHOLSON JOHN MARK
IPC: B60B33/06
Filed: 1969-06-04
Abstract: 1286268 Trolleys SEVERARD Ltd 18 Aug 1970 [4 June 1969] 28204/69 Heading B7B A trolley, which may also act as a stand for a domestic appliance, comprises a frame 10 having wheels 16 and levelling legs 18 respectively at adjacent corners, and a pair of wheels 21 on a spindle 20 mounted in inclined slots 19 in a frame member 13, the wheels 21 being movable by means of a rod 22 between a position clear of the ground and a position in which they contact the ground. In the former state the legs 18 contact the ground and prevent movement of the trolley, whilst in the latter the legs are lifted by the action of wheels 21 to allow movement.
Patent GB-1486528-A (GB)
Title: Phonograph stylus assembly
IPC: H04R11/12
Filed: 1975-07-04
Abstract: 1486528 Multichannel pick-ups EMPIRE SCIENTIFIC CORP 4 July 1975 [19 Aug 1974] 28311/75 Heading H4J A stylus assembly for a multi-channel magnetic pick-up includes a mass 66 resiliently mounted at 67 inside the armature 64 which carries the stylus 65, the mass 66 being so arranged that at high frequencies it vibrates relative to the armature to produce a negative feedback effect so as to reduce the amplitude of the resonance peak of the stylus assembly. The mass 66 is of magnetic material. The stiffness of the elastomer 67 used to resiliently mount the mass 66 is from 1¢-3 times the stiffness of the elastomer 63 used to resiliently mount the armature. The stationary core assembly of the pick-up is essentially the same as that of U.S.A. Specification 3,441,688.
Patent GB-721228-A (GB)
Title: Improvements in warp stop motions for looms for weaving
IPC: D03D51/20
Filed: 1951-12-04
Abstract: 721,228. Warp stop motion for looms. WRIGLEY, W. Dec. 3, 1952 [Dec. 4, 1951], No. 28368/51. Class 142 (2). The notched bars (not shown) of a mechanical warp stop motion are reciprocated by a pin c engaged in a fork c<SP>8</SP> fixed on a spindle c<SP>1</SP>. An oscillating lever C<SP>2</SP> has a depending arm c<SP>4</SP> formed with a slot, the bottom of which is V-shaped to accommodate a knife edge d<SP>1</SP> on a bar d pivoted to a block d<SP>8</SP> loose on the spindle ; a leaf spring d2 normally keeps the bar at the bottom of the slot, so that the bar and the block d<SP>8</SP> oscillate with the lever C<SP>2</SP> to operate the fork c<SP>8</SP> through a plunger d<SP>6</SP> housed in a bracket D fixed to the spindle. Blockage of a notched bar due to warp breakage causes the V-shaped arm c<SP>4</SP> to lift the bar d, which in turn lifts a lever d<SP>3</SP> to stop the loom. The plunger d<SP>6</SP> can be withdrawn to allow the fork c<SP>8</SP> to be rocked manually to help in finding the broken warp thread. Specification 697,009 is referred to.
Patent GB-1379612-A (GB)
Title: Process for the dyeing or printing and simultaneous finishing of  cellulose materials
IPC: C09B62/503
Filed: 1971-12-22
Abstract: 1379612 Dyeing and finishing cellulose material CIBA-GEIGY AG 22 Dec 1971 [23 Dec 1970 4 Oct 1971] 28438/74 Divided out of 1379611 Heading D1B Cellulose material is dyed or printed and simultaneously finished by impregnating or printing the material with one or more aqueous liquors which contain (a) at least one dye of formula (W) m-1 -D-[A-X] n ' in which W is a sulphonic acid or carboxylic acid group, D' is a chromophorous radical of a formazan, azomethine, azo, anthraquinone, nitro or phthaloazamine dyestuff, A is a bridge member, X is a hydroxyalkyl radical or a cycloalkyl radical having at least one hydroxyl group, m and n' independently represent whole numbers 1 to 4, (b) a synthetic resin-forming intermediate product or an aminoplast which is soluble or at least dispersible in water, (c) an acid catalyst and (d) optionally further additives and steaming the impregnated or printed material and then subjecting the material to a treatment at elevated temperature and optionally washing it. Preferably 10 to 100 g/l of dye and 50 to 300 g/l of synthetic resin forming intermediate are used the heating being at 100 to 220‹C for 30 seconds to 30 minutes. The aminoplast may be an addition product of formaldehyde with a 1,3,5-aminotriazine, oxydiamino-triazine, dioxyaminotriazine, triazone, guanamine, urea or thiourea.
Patent GB-1096672-A (GB)
Title: Vertical stacking stool
Inventor: RASSIER CECIL ARTHUR
IPC: A47C3/04
Filed: 1963-07-18
Abstract: 1,096,672. Nesting furniture; stools. D. SEBEL & CO. Ltd. July 14, 1964 [July 18, 1963], No. 28462/63. Headings A4H and A4J. A stool has legs 5 to which a ring 7 is welded or screwed, the legs being shaped at 8 so as to abut against the ring 7 of another stool when one still is stacked upon another. The ring 7 may be formed with serrations or covered with rubber to form a foot rest. The ring may be replaced by blocks.
Patent GB-363422-A (GB)
Title: Improvements in or relating to connections for wire ropes
IPC: F16G11/00
Filed: 1930-09-24
Abstract: 363,422. Wire ropes. STOTHERT & PITT, Ltd., Newark Works, and EVANS, E., 2, Abbey View, both in Bath. Sept. 24, 1930, No. 28631. [Class 109.] To allow the connection between a rope and a chain to pass readily round a sheave, a series of beads 4 .. 7 of gradually increasing diameter are provided upon the rope end. A spring 8 is preferably interposed between the largest bead 4 and the thimble 3. The end of the rope is secured 'to a socket 10 which is mounted in the thimbie 3 so as to be capable of rotational and universal movement.
Patent GB-1106288-A (GB)
Title: Chemically sensitized photographic material
Inventor: KLEPPE HANS-GEORG
IPC: G03C1/043
Filed: 1966-06-27
Abstract: A polymer is disclosed of M.W. 400-10,000 and having the formula <FORM:1106288/C3/1> in which the alkylene oxide groups are in random distribution and wherein R1 is alkyl: R2 is a saturated or unsaturated aliphatic radical of 5-20 C atoms which may be interrupted -S- or -O- atoms, or an aromatic or araliphatic radical; R3 is H, alkyl or a mono-, di-, tri- or tetra-functional aliphatic, aromatic, or acyl group; R4 is H or acyl, Q is alkylene or 3-5 C atoms, X is -O-, -S-, or -NH-; n is 1-20; m is 0-10; p is 1-5; r is 0-10; q is 9-200; and z is 1-5.  The compound may be prepared by copolymerizing ethylene oxide and alkylene oxide compounds with compounds having at least one reactive H atom, e.g. alcohols, glycols, polyols, acids, amines and mercaptans.  The reaction may be carried out in a solvent in the presence of a catalyst e.g. SnCl4, BF3, AlCl3, ZnCl2, KOH or alkali metal alcoholates.  A starting compound may be prepared by reacting pentaerythritol with ethylene oxide, which is then reacted with further ethylene- and alkylene oxides.
Patent GB-631737-A (GB)
Title: Improvements in surface condensers
IPC: F28B1/02
Filed: 1946-09-26
Abstract: 631,737. Surface condensers. VERO, E., and CLEGG, C. Sept. 26, 1946, No. 28762. [Class 64(iii)] A condenser having a jacket 1 through which gas or vapour can be passed is provided with helically-coiled coaxiallyarranged tubes 5, 6, 7 connected in parallel to an inlet tube 8 and an outlet tube 9 for passage of a coolant. The helical tubes are fused at one end to the inlet tube 8 and at the other end to a short tube 10 fused to a tube 11 extending to the outlet tube 9. The tubes and jacket may be of glass. The inlet 2 to the jacket 1 may be shaped and ground for insertion in the neck of a flask.
Patent GB-934479-A (GB)
Title: Improvements in or relating to marine craft
Inventor: POOL JOSEPH HARBIT
IPC: B63B43/06
Filed: 1958-09-08
Abstract: 934,479. Boats. INTERNATIONAL PATENTS CORPORATION S.A. Sept. 3, 1959 [Sept. 8, 1958; Feb. 18, 1959], Nos. 28762/58 and 5634/59. Class 113. A boat includes a pair of ballast compartments 14 extending fore and aft and spaced apart and disposed symmetrically one on each side of the longitudinal axis of the boat, each compartment having a lower portion which is below the water-line of the boat when level but raised wholly or partly above the water-line when the boat heels, and holes 15 and 16 to allow restricted inflow to and outflow from the compartments 14 so that when the boat is level, water is maintained in each compartment up to the level of the water-line of the boat and when heeling of the craft occurs water is retained in the raised compartment to act as ballast. The boat is also provided with buoyancy compartments 13 of, e.g., foamed plastic material and a false step 18, hinged at 19, so that it may be raised or lowered by the screw 22. A tube 24 is provided for stepping a mast. The boat is made from reinforced plastic and a non-slip surface provided where necessary. A valved hole 17 may be provided and the holes 15 and 16 may be valved.
Patent GB-601283-A (GB)
Title: Improvements in, or relating to, sluice gates and the like
IPC: E02B7/26
Filed: 1945-10-31
Abstract: 601,283. Sluice gates. ROWBOTHAM, F. W. Oct. 31, 1945, No. 28848. [Class 68 (ii)] A sluice gate or the like is suspended from a gantry which spans the water channel and is operated by jacks on the banks, the gate being of the same contour as the channel whereby a water seal is effected by staunching carried on the edges of the gate. The channel bed 1, formed of concrete or masonry &c. conforms to the natural shape of the channel. Each jack comprises embedded pillars 3 encased by sliding cylinders 4 which are raised by fluid supplied under pressure through the pipes 6. The cylinders 4 carry the gantry 10 which is formed of two parallel main girders 11 having cross girders 12, ties and braces 13 secured thereto. The girders 11 are joined together at their ends by apertured cross-heads 17, which engage the cylinders 4 adjacent to removable flanges 9 on the cylinders. The vertical brackets 18 secured at each end of the gantry to the girders 11 are provided with two-piece collars 19 which are clamped around the cylinders 4. A decking of planks is provided on the gantry and the operating mechanism for the jacks, such as pumps &c., is carried on the gantry under the housing 16. The sluice gate, suspended from the cross girders 12 by means of the inclined braces 21, comprises a framework of channel section joists 22, 22a, 22b covered on the water retaining side by a metal or the like skin 23. The joint 22 is bent to form the bottom and side edges of the gate, conforming to the shape and size of the channel and along the edges is secured an inverted channel member 25 carrying a staunching strip 24 of rubber or the like. Means may be provided to maintain the gate in a raised position without maintaining the fluid pressure, such as spring-pressed plungers in the collars 19 engaging racks in the pillars 3. Such means may be provided with an automatic switch-off for the power supplying the fluid pressure. For heavy gates additional pillars may be built alongside the hydraulic jacks and be engaged by extensions formed on the crossheads.
Patent GB-408687-A (GB)
Title: Improvements in or relating to filter tip cigarettes
IPC: A24D3/04
Filed: 1932-10-15
Abstract: 408,687. Cigarettes. ROTHMAN'S, Ltd., and WYNER, H., 5, Pall Mall, London. Oct. 15, 1932, No. 28867. [Class 130.] A filter-tip cigarette has one end of the covering tube 10 reinforced with an internal layer 11 of material such as paper, and has inserted in that end an independently preformed filter element shorter than the reinforcement 11 and comprising an absorbent plug 12 enclosed in a wrapper 13. The filter element may be inserted in the reinforced end of the tube 10 by a machine such as that described in Specification 396,869, after which the tobacco 14 is inserted from the other end.
Patent GB-1530388-A (GB)
Title: Tri-power periscope assembly and head
IPC: G02B23/08
Filed: 1976-07-12
Abstract: 1530388 Periscopes KOLLMORGEN CORP 12 July 1976 [16 July 1975] 28871/76 Heading G2J The objective 35 of a periscope is preceded by two telescope lens assemblies 45, 40, each of which is independently reversible with respect to the optical axis of the periscope so as to provide three different degrees of magnification. The mountings of the telescope lens assemblies are coupled to a motor through a Geneva drive.
Patent GB-840690-A (GB)
Title: Valve, particularly pressure-relieved steam valve
IPC: F16K39/02
Filed: 1956-09-21
Abstract: 840,690. Valves. LICENTIA PATENTVERWALTUNGS-G.m.b.H. Sept. 21, 1956 [Sept. 22, 1955], No. 28919/56. Class 135. In a valve comprising a main valve member 7 controlling steam flow between valve inlet and outlet chambers 10, 8 and a pilot valve member 2 operable by a rod 1 to relieve pressure in a chamber 4 connected by leakage grooves 9 with the inlet chamber, the undersurface 6 of the main valve member is of truncated form with a curved generatrix and has opening therefrom passages 5 which are upwardly inclined towards the valve axis to connect the outlet chamber 8 to a chamber 3 downstream of the pilot valve member. On the main valve member being unseated after the unseating of the pilot valve to exhaust steam from the chamber 4, some of the steam flowing past the seat 11 and over the surface 6 enters the passages 5 to build up pressure in the chamber 3 above that in the chamber 8 to reduce flutter of the valve during opening and when the valve is fully open.
Patent GB-741028-A (GB)
Title: Method and means for checking ignition timing of an internal combustion engine
Inventor: WELLS LAWRENCE VESTALL
IPC: F02P17/06
Filed: 1953-10-20
Abstract: 741,028. Stroboscopic ignition-tuning systems. ALLEN ELECTRIC & EQUIPMENT CO. Oct. 20, 1953, No. 28938/53. Class 37. In a system for measuring the timing of the ignition in an internal-combustion engine, the occurrence of the spark in (say) number 1 cylinder causes the operation after an adjustable delay of a flash tube by the light of which the conventional timing marks are viewed. When the delay is adjusted so that the timing marks appear in alignment it gives a measure of the amount by which the spark is advanced. In one arrangement, Fig. 4, an impulse from wire 68 connected to the plug of No. 1 cylinder breaks down a thyratron 63. The resulting change of potential at point 72 is communicated to the grid of a second thyratron 33 after an adjustable delay due to a capacitor 49 connected via a variable resistor 48 to the grid circuit. The firing of the latter thyratron gives an impulse to a flash tube 21 by which the timing marks on the engine are viewed. The change of potential at point 71 when 33 fires extinguishes 63 and 33 is self-extinguishing by reason of the discharge of its shunt capacitor 51. A meter 41 associated with 33 gives the speed of the engine and a meter 64 associated with 63 gives the amount of spark advance. In a modification, Fig. 5, a high-frequency pulse derived from the ignition circuit fires a thyratron 8À1 and the resulting sudden change of potential at 118 reverses the condition of the tube 107, of a monostable pair 107, 108. After a time determined by the point of a resistor 121 to which capacitor 122 is connected, the original state is restored and a second thyratron 127 fires to operate the flash tube. Meter 113 indicates the amount of spark advance and meter 83 the speed.
Patent GB-404912-A (GB)
Title: Improvements in and relating to motor vehicles
IPC: B60J7/14
Filed: 1933-10-19
Abstract: 404,912. Vehicle opening-tops. THURGOOD, W. L., Park Road, Ware, and PERKINS, H., 36, Duke Street, Hoddesden, both in Hertfordshire. Oct. 19, 1933, No. 28946. Addition to 337,987, [Class 108 (i), Road vehicles, Body details &c. of]. [Class 108 (i).] The longitudinally hinged opening flaps described in the parent Specification for the roofs of motor vehicles are arranged to be operated by a lever pivotally mounted on the fixed part of the roof. In the form shown the lever 8, 10, 13 is pivoted at 9 to the fixed member 5 and is pivoted at one end to a sleeve 11 adapted to slide on a tube 12 carried by one of the leaves of the hinged flap 1, 2. Operation of the handle 13 opens the flap as indicated. In a modification the connection between the lever and the flap may be by pin-and-slot arrangement.
Patent GB-862401-A (GB)
Title: Improvements in or relating to fixed wheel brackets
Inventor: CREASY HENRY MARTIN
IPC: B60B33/00
Filed: 1958-09-10
Abstract: 862,401. Hand trucks. H.M.C. WHEELS Ltd. Sept. 9, 1959 [Sept. 10, 1958], No. 29055/58. Class 108(1). Wheel brackets 11 are secured in correct alignment with the aid of rods 24 which pass through apertures 22 in the side cheeks 17.
Patent GB-683698-A (GB)
Title: Improvements in pipe couplings
IPC: F16L37/10
Filed: 1949-11-14
Abstract: 683,698. Pipe joints; stopping. AIR SERVICE TRAINING, Ltd., and BENNETT, R. H. M. Sept. 26, 1950 [Nov. 14, 1949], No. 29058/49. Classes 99 (i) and 99 (ii). In a pipe coupling comprising a hollow coupling member which slidingly receives a male member 12, Fig. 1, onto a seating 16 in its interior, the male member having an external peripheral groove 31 to be within the coupling member, and the latter consisting of two coaxial parts 14, 17 which are movable angularly with respect to one another. it is arranged that coupling part 14 carries angularly-spaced pawls 25, Fig. 2, at the level of the groove 31, Fig. 1, whilst coupling part 17 carries projections, such as pins 28, Fig. 2, coacting with the pawls so that relative angular movement of parts 14, 17 in one direction will force the pawls 25 in the groove to axially locate the coupling member to the male member 12 and in the. other direction will positively retract the pawls. The annular coupling part 14 is provided with a framework 15, the seating 16 accommodating a shoulder on the main part 17, the latter extending downwardly onto the annular part 14, whilst a hose pipe 19 is secured by a clip 21 to the lower end 18 of the main part 17. An annulus 23, Fig. 1, secured to the annular part 14 holds the main part 17 on its seating 16, the annulus 23 carrying three pawls 25, pivotally mounted on pins 26 Fig. 2; the upper edge of the main part is recessed to accommodate the pawls and pins 28. To assemble the coupling the male member 12 is inserted into the bore of the main part 17 until it engages an annular seal 30, Fig. 1, located in the latter and the groove 31 in the member 12 is co-planar with the pawls which have been previously retracted; partial rotation of annular part 14 will then bring the pawls into the locking position in the groove 31, in which position the spring- loaded bolt 33 carried by the main part 17 engages a hole in the annulus 23. When the coupling member has been disconnected from the male member 12 the latter is closed off by a blanking disc similar in construction to the coupling member.
Patent GB-761316-A (GB)
Title: Improvements relating to interferometers
IPC: G01N21/45
Filed: 1954-10-08
Abstract: 761,316. Interferometers. LKB-PRODUKTER FABRIKSATKTIEBOLAG. Oct. 8, 1954 [Nov. 7, 1953], No. 29073/54. Class 97(1) An interferometer, particularly for aerodynamic investigations, using large object fields comprises a light source, the divergent beam from which is divided by a semitransparent foil, smaller than the object field, into two divergent coherent beams passing respectively through the object under investigation and a reference, object of essentially the same optical thickness, two optical systems converging the beams after passage through the objects and reflecting them to form images of the light source substantially in coincidence at the semi-transparent foil or at a second such foil arranged to combine the beams and means for forming coincident images of the object fields to give interference effects, the whole arrangement being symmetrical about the semi-transparent foils. As shown, light from the source A is divided by a foil within a prism C1 into beams reflected by reflectors S1, S2 to pass through the object fields, lenses L1, L2 collimating them for this purpose. Images of the source A are found on a second foil within a prism C2. by lenses L1<SP>11</SP>,L2<SP>1</SP> and reflectors S1<SP>1</SP>, 5 2 1, the system being symmetrical about the plane through the two foils. Images of the object field are formed on a light-indicating device by a lens G and reflector S3. In a modification the lenses L1, L2 may be omitted and the lenses L1<SP>1</SP>, L2' replaced by concave spherical mirrors having their centres of curvature at the source A, such mirrors reflect the two beams back to the prism C1, which acts also to combine them for observation of the interference effects.