baber/WOPTO huggingface dataset:
Patent GB-1081902-A (GB)
Title: Electrolytic machining
Inventor: MOORE ARTHUR IVAN WALTER
IPC: B23H3/10
Filed: 1964-03-24
Abstract: <PICT:1081902/C6-C7/1> In a generating method of electrolytic machining (i.e. one where the finished form of the workpiece depends directly on the relative movement between the tool and the workpiece, though it may be affected by the shape of the tool) the tool presents a conductive surface comprising a first portion which in the direction of relative movement faces the anode or workpiece and a second portion in the form of a land which extends generally in the direction of relative movement during machining and in that direction follows the first portion and effects the finishing stage of the machining operation, and the electrolyte is caused to approach the land in a path the cross-section of which has a decrease in the flow direction towards the land without any increase between the decrease and the land.  The voltage drop, the relative feed rate between the workpiece and tool, and the conductivity of the electrolyte may all three be maintained substantially constant.  However, small variations in profile may be produced by adjustment of any of these three factors, e.g. to produce a slightly tapered hole.  Jerkiness in feed is avoided by using an electric feed motor controlled by a known electronic comparison circuit.  Fig. 1 shows a cathodic template 12 machining a workpiece 11, electrolyte being supplied to the apparatus at 16 and removed through the template holder 13.  The template may be of mild or stainless steel, brass, or Cu and the holder 13 may be insulated by a stoved plastic coating, epoxy resin or plastic insulating tape.  There may be a central hole 14 or parallel bores through the holder and template for removal of electrolyte but, where holes are to be enlarged, the electrolyte circulation may be by way of a hole in the workpiece in which case the template and holder will be solid.  Fig. 2 (not shown) illustrates the shaping of the outer surface of a shaft, electrolyte being supplied through a hollow template holder.  Templates may be such as to produce splined or square holes or solid cross-sections.  The electrolyte and control of its temperature, concentration and circulation may be as specified in the parent Specification (No. 1497/64).  A workpiece, prior to final sizing electrolytically, may be rough profiled, e.g. by spark discharge machining or electrolytically.
Patent GB-1223301-A (GB)
Title: Improvements in or relating to stuffing boxes
Inventor: DAGWELL HAROLD LLOYD
IPC: F16J15/18
Filed: 1968-03-14
Abstract: 1,223,301. Stuffing-boxes. HENRY SYKES Ltd. 13 March, 1969 [14 March, 1968], No. 12486/68. Heading F2B. In a stuffing-box assembly 14 for a rotary pump shaft 13 comprising packing rings 16 compressed in the stuffing-box 18 by a gland 19, the box is sealed to and resiliently mounted in a part 23 of the pump casing 15 by two sealing rings 21 each comprising a length of elastomeric material formed into a ring with abutting ends. The rings 21, which are formed from elastomeric tubing, are separated by a flange 22 and located between a flange 24 on the part 23 and a retaining plate 25 secured to the part 23 by studs 26. Rotation of the box 18 is prevented by a rubber bush 28 which is carried by a bolt 29 screwed -into the part 23 and engages a recess (27) in the box.
Patent GB-1032220-A (GB)
Title: Method of manufacture of material for electrical resistors
Inventor: UMANTSEV VICTOR SERGEEVICH
IPC: H01C7/06
Filed: 1964-03-25
Abstract: 1,032,220. Resistors. ZAVOD ELEKTROIZMERITELNYKH PRIBOROV. March 25, 1964, No. 12561/64. Heading H1S. [Also in Division B5] A method of manufacturing a resistor includes the steps of heating, in a forming die, a thin sheet of metal and adhesively fastening the formed sheet to a rigid supporting member corresponding in shape to the die, the material of the supporting member being stable with respect to time and humidity and having a coefficient of thermal expansion close to that of the metal sheet. The heating of the metal sheet serves to remove internal mechanical stresses. A pile of sheets may be heated together in the die. To prevent mechanical stresses arising in the sheet during the glueing process the sheet is pressed against the supporting member by an element having a pressing surface corresponding in shape to the sheet. The supporting member may be of glass, ceramics or plastics, but preferably is of the same metal as the sheet in which case insulating material in the form of thin glass cloth is interposed between the sheet and the supporting member.
Patent GB-109301-A (GB)
Title: A New or Improved Safety Razor.
Inventor: VINCENT HELIER ALEXANDRE
IPC: B26B21/16
Filed: 1916-09-06
Abstract: 109,301. Vincent, H. A. Sept. 6, 1916. Razors, safety. The handle c, Fig. 5, carries a spring- pressed pin d, which clamps the blade against a guard a<1> and against an overhanging part a<3> of the holder. The blade may have a projection b<1> passing through a slot a<4>, thus enabling the blade to be tilted as shown in Fig. 7, so that it may be thoroughly washed. The position of the blade may be regulated by screws e.
Patent GB-121143-A (GB)
Title: Improvements in and connected with Suction Devices for Artificial Dentures.
Inventor: FISHER ARTHUR WILLIAM
IPC: A61C13/00
Filed: 1917-09-05
Abstract: 121,143. Fisher, A. W. Sept. 5, 1917. Teeth, artificial. - A suction device for upper - jaw dentures comprises a rubber disk a having a central aperture provided with a bead c which is preferably undercut or reduced in thickness at the junction with the disk. Alternatively, the ridge may be replaced by a ribbed or roughened surface formed on the disk near the central aperture. Before application to the denture, the disk is covered with sheets d, e of tin foil, with the exception of the tread on the roughened surface. In the process of formation, a pliable metal disk f, Fig. 6, of similar dimensions to the suction disk and thicker at the edges than the centre, is forced into the wax impression h, and afterwards removed and heated to cause it to adhere thereto on re-application and form an annular recess in the model i when this is cast from the wax impression. In the recess so formed, the foilcovered disk is inserted and secured by a largeheaded pin p passed through the centre of the foil, after which the denture is formed and vulcanized, the foil being subsequently removed.
Patent GB-1414144-A (GB)
Title: Strain measuring device
IPC: G01L1/22
Filed: 1972-03-20
Abstract: 1414144 Measuring strain electrically WELWYN ELECTRIC Ltd 20 March 1973 [20 March 1972 24 March 1972] 12824/72 and 14070/72 Heading G1N In an arrangement in which the output of a strain gauge bridge is fed to a meter, the meter is also supplied with a reference voltage dependent on the D.C. supply to the bridge in order to compensate for variation in this supply, and compensation for gauge factor is also provided. As shown a strain gauge bridge in which one or more of the resistors R7,R8,R9,R10 may be strain gauges and the others may be fixed or variable resistors, supplies an output which is fed via amplifiers A3,A4, to an amplifier AS which provides one input of a summing amplifier A6 whose output supplies a meter M2. The meter is also fed with a reference voltage derived from an amplifier A 2 which is supplied with the same D.C. voltage as the bridge, so that compensation for D.C. variation is obtained. A portion of the output from amplifier A'2 is derived from a potentiometer R13 and fed as a second input to amplifier A6 to compensate for initial bridge unbalance. To adjust for "gauge factor", i.e.#R/R¸#L/L, a variable resistor R12 is included. A resistor R14 may be switched into the circuit to enable the meter to be calibrated.
Patent GB-890208-A (GB)
Title: Method for the colouring of textile material
Inventor: LEWIS GEORGE WILLIAM
IPC: D06B19/00
Filed: 1958-04-23
Abstract: <PICT:0890208/IV (c)/1> Wet textile material at atmospheric temperature is heated without materially changing its water content by subjecting it to the action of a steam/air mixture after first raising its temperature to a point not more than 10 DEG C. below the dewpoint of the steam/air mixture by application of radiant heat while the material is sufficiently enclosed to prevent substantial loss of water by evaporation.  The textile material may be staple fibre, carpets or other pile fabrics and may be treated in apparatus comprising a first enclosure 7 containing a source of radiant heat, e.g. infra-red lamps 10, 11, a second enclosure 12 containing steam source 14 and means for moving the textile material through the enclosures, e.g. driven rollers 3, 24 adapted to derive a length of the textile material or a conveyer belt carrying staple fibres. Before being passed through the first enclosure the material may be dyed, e.g. by passage through a trough of dye liquor 2 and between the rollers of a padding mangle.  The textile material is preferably heated to 75 DEG C.-85 DEG C. by radiant heat and then to at least 90 DEG C. by the steam/air mixture, which may have a dry bulb temperature of 110 DEG C.-115 DEG C. and a wet bulb temperature of 90 DEG C.-95 DEG C.  Examples are given.  Specifications 772,030, 774,925, 781,930, 785,120, 785,222, 797,946 and 798,121 are referred to.
Patent GB-1441703-A (GB)
Title: Process for isolation of antibiotic av290 and antibiotic av290-alkali metal alkyl sulphate complex obtainable thereby
IPC: A23K20/195
Filed: 1974-03-22
Abstract: 1441703 Complexes of antibiotic AV290 AMERICAN CYANAMID CO 22 March 1974 [27 April 1973] 12994/74 Heading C2A A process for the production of a dried fermentation harvest mash solids animal feed supplement containing an antibiotic AV290- alkyl sulphate complex comprises (a) acidifying the whole mash containing antibiotic AV290 to a pH from 1À9 to 2À1; (b) adding to the acidified mash in an amount sufficient to precipitate a complex with the antibiotic, a complexing agent selected from the group of compounds of formula wherein n is an integer from 9 to 17, and M is sodium or potassium, and mixtures thereof; (c) removing the mixture of mash solids with precipitated antibiotic AV290-alkyl sulphate complex; and (d) drying the mixture. Prior to step (a) above, the whole mash may be clarified to form a fermentation liquor which is subjected to steps (a) to (d) to produce antibiotic AV290- alkyl sulphate complex. The complex in animal feed supplement compositions enhances the growth rate of animals. Preferred complexing agents are sodium decyl sulphate, sodium lauryl sulphate, and sodium cetyl sulphate in admixture with sodium oleyl sulphate.
Patent GB-397077-A (GB)
Title: Improvements in cigarette cases or the like
IPC: A24F15/12
Filed: 1933-05-04
Abstract: 397,077. Fastenings; hinges. DENELS, R., 605, West 142nd Street, New York, U.S.A. May 4, 1933, No. 12999. [Classes 44 and 65 (ii).] The lid of a cigarette case, vanity box, &c. is fastened by catches released by pressing in a member 14 which fits an aperture in the wall of the case and is flush with the outer surface. As shown, two catches with members 14 are provided at opposite ends of the case to be pressed in simultaneously by gripping the case. The member 14 has a peripheral flange 22 and a lug 16 with a perforation 17 engaged automatically by a shouldered projection 18 with bevelled nose mounted on the lid 11. Member 14 is urged outwards by a spring 21, and has a rib 19 and shoulder 20 which position it flush with the outer surface of the case, shoulder 20 also serving as a fulcrum when the member is pressed inwards. When the catches are released, the lid is preferably opened automatically by a spring hinge 12 of any suitable construction, the form described having a hinge-pin connected at one end to the case body and at the other to the lid so as to be under torsion when the lid is closed.
Patent GB-528257-A (GB)
Title: Improvements in and relating to the manufacture of starch
IPC: C08B30/04
Filed: 1939-05-01
Abstract: 528,257. Starch. CORN PRODUCTS REFINING CO. May 1, 1939, No. 13028. Convention date, July 11, 1938. [Class 121] In preparing starch from maize, the maize is steeped in water containing sulphur dioxide to which has been added a quantity of the soluble substances leached from maize on steeping. The steeping is carried out in a series of vessels A ... E in which the maize is successively treated with progressively fresher steeping water. The steeping water consists of water from a gluten separator 7 mixed in a vessel 8 with steeping water which has been used to wash the steeped maize in vessel A, and with, in some cases, part of the steep water from the vessel E in which fresh maize is treated, and before use the steeping water is passed through a tower 9 in which it is charged with sulphur dioxide. The addition of the soluble substances may be effected solely by steep water from vessel E.
Patent GB-528276-A (GB)
Title: Improvements in or relating to rock drills
IPC: B25D9/20
Filed: 1939-05-02
Abstract: 528,276. Percussive rock drills. MOSS, E. W. (Ingersoll-Rand Co.). May 2, 1939, No. 13130. [Class 124] A fluid actuated rock drill has a valve chamber with reciprocating annular valve having terminal seats, a pair of plates one of which forms a valve seating and is characterized in that cylindrical surfaces, are provided on the plates to co-operate with inner and outer surfaces on the valve to cut off fluid to cylinder during a part of the valve movement. As shown, a casing 21 contains a chamber 23 for a hammer piston 27 and is provided with a passage 63 leading from one end to the valve chamber and a port 71 leading from the other end. A rifle bar 31, ratchet drive 33, and rotary throttle 38 are provided. A reciprocating valve 48 of the type described in U.S.A. Specification 2,048,957 is provided and comprises a series of plates 42, 43, 44 and 45 the latter being integral with a bushing 30.
Patent GB-400121-A (GB)
Title: Improvements relating to the manufacture of aluminium alloys
IPC: C22C21/02
Filed: 1933-05-06
Abstract: Aluminium alloys containing silicon with or without smaller quantities of other elements and impurities are modified by stirring into the molten alloy a nitrate or nitrates of the alkali metals.
Patent GB-337375-A (GB)
Title: Improvements in or relating to electric accumulators
IPC: H01M10/00
Filed: 1929-04-29
Abstract: 337,375. Soc. Anon. des Accumulateurs-Monoplaque. Feb. 5, 1929, [Convention date]. Electrodes.-An accumulator is provided between each pair of negative plates 2 with a group of two positive plates 3, 4 each having half the thickness of the negative plates. The positive plates are joined together and enclose a quantity of electrolyte which tends to remain at a maximum concentration. The electrolyte passes through the positive plates under the influence of hydrostatic and electro-osmotic pressures. Instead of the two separate positive plates a single hollow plate may be used which may contain an inert packing material, the walls of the plate having half the thickness of the negative plates.
Patent GB-108922-A (GB)
Title: Improvements relating to the Transportation of Goods by Means of Trucks or the like.
Inventor: FORBES THOMAS STUART
IPC: B62B3/06
Filed: 1916-09-20
Abstract: 108,922. Forbes, T. S. Sept. 20, 1916. Vehicles with removable bodies. - Wheeled bogies are conveyed from a loading to an unloading point by a motor or other truck h which is adapted to be run under the bogie d after this has been elevated by running it on to a pair of rails a provided with inclines c. The bogie is secured in position on the truck by a peg h<1> or other means. The bogie is removed from the truck by causing the wheels of the bogie to mount a similar pair of rails at the unloading point.
Patent GB-1330604-A (GB)
Title: Treatment of gas mixtures
IPC: B01D53/14
Filed: 1972-03-22
Abstract: 1330604 Separation of gas mixtures CELANESE CORP 22 March 1972 [29 March 1971] 13313/72 Heading C1A Carbon dioxide is separated from a gas stream by scrubbing with an aqueous solution of orthoboric acid and potassium hydroxide in the proportions of from 0À6-4À0 moles of acid per mol. of hydroxide, the spent absorbent being regenerated at a temperature and/or pressure different from that used in the scrubbing step to release carbon dioxide. The scrubbing may be carried out at from 70‹ to 160‹ C. at a pressure from atmospheric to 30 atmospheres absolute in order to prevent boiling of the solution and the regeneration step may be carried out within the same temperature range but at a pressure of from 0À9 to 4À0 atmospheres absolute. The regenerated absorbent may be recycled.
Patent GB-1161882-A (GB)
Title: Apparatus for Yarn Treatment.
Inventor: CLIMIE IAN ERNEST
IPC: D02J1/22
Filed: 1965-11-24
Abstract: 1,161,882. Draw-twister. COURTAULDS Ltd. 2 Dec., 1966 [24 Nov., 1965; 25 March, 1966], Nos. 49923/65 and 13321/66. Heading D1D. In a draw twister the godet and the spindle are driven by the same motor, the drive to the spindle being through a variable speed device whereby the relative speed of spindle and godet may be changed. As shown a motor 1 drives the input shaft of a gearbox 5 via a variable speed device 3. A first output shaft 6 drives the godet, a second output shaft 7 drives a differential 8 the output shaft 9 of which drives the spindles and a third output shaft 10 drives, via a variable speed gear 11 a second input 12 to differential 8. Variable speed gear 11 is altered by a motor 13 controlled by a programme unit 15 e.g. a cam. During acceleration of godets and spindles the arrangement is such that the godet and spindles have the same surface speed. As the yarn package grows the variable speed gear 11 is altered to lower the spindle speed and ensure that the thread tension is left constant. When the packages are full the spnidles and godets are decelerated together so as to stop at the same time. Gear 11 may be replaced by an induction coupling transmitting drive from a constantly rotating shaft and controlled e.g. by a potential from a potentiometer controlled by a cam. In Fig. 1 of the drawings accompanying application number 13321/66 (not shown) output shafts (4, 11) of a gearbox (3) drive via variable speed devices (5, 12) the godets and spindles respectively. A tachometer (7), on the godet drive shaft gives a signal representing the shaft speed and this is compared in a control unit (9) with a datum signal and the variable speed device (5) adjusted as a result of the comparison. During the starting up and slowing down periods the datum signal in unit (9) is varied (e.g. by a wiper being moved across a potentiometer coil by means of a cam) to cause controlled acceleration and deceleration. During the package build a tachometer (14) on the spindle drive shaft feeds a signal to a control unit (15) to be compared with a datum signal which is derived from the tachometer (7) and modified e.g. by a cam-operated potentiometer. In a further form the rates of acceleration and deceleration of the primary driving motor itself are controlled by the load on the motor being varied to give the required acceleration. The load comprises a flywheel which the motor drives through a variable speed gear which is adjustable to provide the required adjustable load.
Patent GB-538748-A (GB)
Title: Improvements in electric valve control circuits for electric motors
IPC: C03B7/06
Filed: 1940-08-22
Abstract: 538,748. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 22, 1940, No. 13346. Convention date, Aug. 25, 1939. [Class 38 (iii)] [Also in 'Group XXXV] A reversible motor 10 such as is used to position large apparatus is fed from a constant potential A.C. supply 14 through a mono-cyclic network 15, a constant current transformer 16 and opposed grid-controlled rectifiers 17, 18. The phase of the grids are adjusted in opposite directions by phase shifters 37, 47 geared together by gears 54, and the grid bias is adjusted so that the sum of the currents drawn by the rectifiers is constant, the motor being fed by the difference in these currents. This results in a constant power factor load on the A.C. supply.
Patent GB-555667-A (GB)
Title: Improvements in or connected with mechanism for the conversion of motion according to one law into motion according to another law
IPC: F16H21/16
Filed: 1940-08-23
Abstract: 555,667. Indicating-apparatus. BARR & STROUD, Ltd., STRANG, J. M., and BELL, I. C. M. Aug. 23, 1940, No. 13380. [Class 106 (iv)] [Also in Groups XX and XXIV] Mechanism for converting motion according to one law into motion according to another law, for use, for example, in converting translational movement of a deviating prism in a range finder or height finder, following a reciprocal law, into readings on a uniform scale of range or function thereof, comprises a first element B moving in a rectilinear path A between lower and upper range limits 0, 2. a lever E slidably and pivotally engaging the element B and movable about a fixed pivot C located on a line OC perpendicular to the path A at the lower limit position, and a second element F slidable and pivotally engaged with the lever E and arranged to move in a rectilinear path K, 2, intersecting the path A above the lower limit position and intersecting the perpendicular at a point intermediate between O and C, the arrangement being such that movement of the element F in the path K, 2 causes angular movement of the lever E, and consequential movement of the element B In a rangefinder, the prism moves with the element B, and the element F is operated from the working head. The path A may be formed by a guide and to permit the element B to move to an infinity position the lever E may be cranked. Readings of heights may be obtained by mounting the guide A and pivot C on a frame X, and the screw on a carriage Y movable parallel to the guide A by pinions 5 and racks 6 through a distance proportionate to the size of the angle of elevation of the plane of sight. Specifications 133,974, [Class 106 (iv)], 324,518, [Class 97 (i)], and 499,053, [Group XX], are referred to.
Patent GB-315511-A (GB)
Title: Improvements in or relating to electrical supply systems
IPC: H02J1/10
Filed: 1928-05-07
Abstract: 315,511. Igranic Electric Co., Ltd., and Spaink, J. H. Abbink-. May 7, 1928. Systems depending on two or more machines; regulation, automatic.-In a system in which a number of independent sources run in parallel and an electric motor is energized in response to current variations in certain of the sources to effect corresponding variations in the voltage of certain sources for load control purposes the motor is adapted to be energized only when a current variation has persisted for a given time interval. The motor may also be de-energized a given time interval after energization and again energized should the variation persist, and the energization may be subject to the same delay as the initial energization. The Figure shows a mercury rectifier 1 in parallel with generators 2, 3 and a motor 8 coupled to rheostats 6, 7 to vary the generator fields. Current relays 9, 10 in series with the mercury rectifier, control switches 24, 25 which open and close upon predetermined maximum and minimum currents respectively. These switches control separate time lag relays 27, 26 which when the load on the rectifier has been maintained beyond either limit for a predetermined period, energize one or other of two switches 12, 13 to run the motor 8 in an appropriate direction to vary the voltage of the sources 2, 3 and so restore the desired output of the rectifier. A normally closed time delay relay 28 with contacts in the circuit energizing the relays 27, 26 is energized by auxiliary contactor contacts when a contactor closes so that that contactor is de-energized after a predetermined period. Reenergization of the time delay relay 26 or 27 will take place after the predetermined interval if the connection has been insufficient. The control relays and control motor may be arranged to vary the voltage of the mercury arc in accordance with the current given by the generator by means of an induction regulator or transformer tapping switch for example. Or the pressure may be raised in one source simultaneously with the lowering of pressure in another source. Other sources of supply may be substituted for the mercury arc.