baber/WOPTO huggingface dataset:
Patent GB-563209-A (GB)
Title: Improvements in or relating to the stabilization of polyvinyl alcohol
IPC: C08K5/05
Filed: 1942-10-23
Abstract: Polyvinyl alcohol particles prepared by the hydrolysis or alcoholysis of polyvinyl esters are treated in an alkaline bath consisting of a lower aliphatic alcohol, 0-60 per cent by weight of the bath of water, and an alkaline substance selected from the hydroxides of sodium and potassium or their salts with weak acids, the alkalinity of the bath, i.e. the number of ccs. of .01N hydrochloric acid required to neutralize 100 grams of it, being adjusted so that the particles after separation from the bath and drying have an alkalinity A (defined as 20 times the number of ccs. of .01N hydrochloric acid required to neutralize to bromophenol blue a solution of 5 grams of the alcohol is 200 ccs. water) between the limits log. A = 2.48-.008W and 75.  W is the percentage by weight of water in the bath.  Before separating the particles from the bath (by centrifuging or filtration), the alcohol content of the bath must be adjusted to at least 65 per cent to prevent coalescing of the particles.  The process is particularly applicable to particles derived from polyvinyl acetate, the residual content of acetate groups not exceeding 15 per cent.  The product has greater colour stability under conditions of relatively high temperature, e.g. 135 DEG  C. for 16 hours, than untreated particles.  The particles may be rinsed after separation and before drying, the rinsing mixture containing not more than 65 per cent of alcohol.  The particles are preferably washed with methanol or ethanol before treatment to remove adhering alcoholysis bath.  The alkalinity of the bath is preferably adjusted to a point just below the required value by addition of concentrated alkali.  The final adjustment is then made by titration with a dilute alkaline solution.  Water contained in the alcohol used is taken into account in calculating the composition of the baths.
Patent GB-392360-A (GB)
Title: Method of and apparatus for simultaneously condensing a refrigerant vapour and cooling milk or other liquids
IPC: F25D31/00
Filed: 1932-05-25
Abstract: 392,360. Refrigerating ; cooling milk &c. BERGEDORFER E I S E N W E R K AKT.-GES. ASTRA-WERKE, Bergedorf, Germany. May 25, 1932, No. 14870. Convention date, Dec. 12, 1931. [Class 29.] A refrigerant condenser applicable also for simultaneously cooling milk &c. comprises concentric tubes 4, 5 connected to headers 1 having passages 2a, 3a for the flow of the refrigerant vapour and the cooling or condensing liquid respectively, the milk flowing over the unenclosed outer tube 5. The cooling liquid thus flows through the annular space between the tubes and simultaneously condenses the refrigerant vapour flowing through the inner tube and cools the milk flowing over the outer tube. A number of superposed concentric tubes may be used. The condenser may be placed above a milkchilling apparatus.
Patent GB-381613-A (GB)
Title: Improvements in navigational plotting instruments
IPC: G01C21/20
Filed: 1932-03-16
Abstract: 381,613. Trigonometrical calculators. WAGHORN, D. J., H.M.S. Glorious, c/o G.P.O., London. March 16, 1932, No. 14907/31. [Class 106 (i).] For solving vector problems in aerial navigation a speed-graduated arm D is slidable and rotatable upon a pivot F also rotatable on a transparent protractor sheet A bearing grid lines B. Also pivoted at F is another arm H which may be clamped to move with arm D. Concentric with the angle scale C is an ordinary log. scale I. Scales J, J<1> of miles may be provided along the edges of the sheet and the arm D may carry a cursor.
Patent GB-292340-A (GB)
Title: An improvement in means for fastening magneto high tension cables to sparking plugs
IPC: H01T13/04
Filed: 1927-06-07
Abstract: 292,340. Lawley, W. H. June 7, 1927. Binding-posts and terminals.- The nut of a sparking-plug terminal is replaced by a spring clip comprising a length of wire A bent to form two loops C, C1, that coincide when the ends B, B1, of the wire are pressed together and can be threaded over the stem of the terminal.
Patent GB-180897-A (GB)
Title: Improvements in locks and the like
IPC: E05C9/04
Filed: 1921-05-30
Abstract: 180,897. Shearing, A. E., Fuller, F., and Coldwell, J. F. May 30, 1921. Locks, revolving-barrel; doublebolt fastenings.-A pair of bolts a, a' having racks are operated by a pinion b which has a cross-slot b' engaged by the flat connecting- bar c of the pin tumbler lock R which turns the pinion to operate the bolts. The lock R mav be situated in the centre of the door, in which case the bolts a, a' are of equal length, or it may be situated nearer either edge, the bolts then being of unequal length.
Patent GB-854863-A (GB)
Title: Improvements in or relating to apparatus for mechanically handling thin flat articles
Inventor: COPPING GEOFFREY PERCY
IPC: B65H29/22
Filed: 1957-05-10
Abstract: 854,863. Feeding and delivering sheets; stamp-cancelling. POSTMASTER GENERAL. May 9, 1958 [May 10, 1957], No. 15003/57. Classes 100(1) and 100(2) Stamp-cancelling and delivery apparatus:- Letters 28-31 separated from a stack and fed downwardly to continuously driven rollers 17, Fig. 3, intercept a beam of light 21 focused on a photo-electric cell 22 which controls a singlerevolution clutch in epicyclic gearing driving rollers 20 which deliver the letters to a stacking box. The arrangement is such that when the light beam 21 is intercepted the clutch is operated, after a suitable delay, so that the rollers 20 are moving with a peripheral speed equal to-the linear speed of a letter when they engage the letter, and feed the letter a distance equal to one half the circumference of the rollers. The rollers 20 swing the letter into alignment with an inclined wall 19. Upon the entry of a succeeding letter, the rollers 20 are again rotated, and the letter already engaged by the rollers, and the leading portion of the next letter, are fed a further step. The right hand roller 20 may be a stamp-cancelling roller, as it only engages the leading portion of each letter. The stacking box for the letters comprises an inclined floor 23, a movable stop 24, and a rotating starwheel 25, and is constructed as shown in plan in Fig. 4. Letters 28 are supported on end by spaced strips 70 supported on bolts 71 secured to an end wall 73. These bolts also support a guide wall 76 and brackets 77 which carry a shaft 78. A movable stop 79, which recedes as letters are stacked, comprises a plate secured to a block 80 mounted by two sets of ball bearings 82 on the shaft 78, and slidably supported by ball bearings on the guide wall 76. The stop plate 79 is urged to the right by means including a spring 85, cord 86, and pulley 87. A number of star-wheels 74 on a driven shaft 75 assist the stacking operation. Sheet separators and forwarders:- According to the Provisional Specification, a stack of letters 2, Fig. 1, supported on edge on an inclined base 1 is urged towards a front wall 3 by a metal roller 16, and the front letter either falls under gravity, or is fed downwardly by a driven friction roller 7, between a disc roller 5 having a soft friction tyre and a pair of disc rollers 8 having hard friction tyres. A shoe 15 serves as a guide for the letters. The disc 5 is driven clockwise to complete the separation of the letter from the stack but the two discs 8 are also driven clockwise to oppose the separation of the letter and serve to stop the separation of a second letter, if such has been separated at the same time as the first. The discs 8 are arranged on each side of the disc 5 on a shaft 11 which is carried by arms 9 pivoted at 10 and urged by springs 12 against an adjustable stop 13. A letter passing between the discs 5, 8 is slightly bowed transversely.
Patent GB-309332-A (GB)
Title: Method of and machine for splitting mica
IPC: B28D1/32
Filed: 1928-05-22
Abstract: 309,332. Frederick, L. T. May 22, 1928. Splitting.-A machine for splitting mica plates by repeated bending comprises a pair of travelling belts 56, 58 between which the. plates are fed and which pass over driving rollers 22 and bending formes 7<2> - - 80, of progressively increasing curvature. Each roller is driven by worm gearing 32 from a common shaft 34 and the formers are carried by a vertically adjustable head 46. Guides 82, 86 may be provided if desired.
Patent GB-333604-A (GB)
Title: Apparatus for aerating or ventilating underground workings
IPC: E21F7/00
Filed: 1929-05-14
Abstract: 333,604. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Gerlach, F.). Nov. 9, 1928, [Convention date]. Ventilating mines and other underground places.-Apparatus for withdrawing gases from the bottom of underground workings, e.g. sewers, wells or mines, comprises a pump connected by a pipe b, Fig. 1, and a flexible tube c to a float d provided with a strainer e, the float resting upon the surface of the water, if present, or upon the bottom of the working, if dry. The pipe b may be permanently secured to the wall of the working a, or the apparatus may be portable, in which case the pipe connecting the pump to the float is flexible. In a modification, the pipe g, Fig. 3, leading from the pump is provided with holes h, some, of which are masked by a tube l connected by arms to the float i which surrounds the tube g, the gases being therefore drawn from just above, the surface of the float. Extensive workings may be divided up by partitions into several spaces from which the gases are separately withdrawn.
Patent GB-942878-A (GB)
Title: Improvements in and relating to counting and like circuits
Inventor: PENVER GILBERT FRANCIS
IPC: H03K23/80
Filed: 1961-04-26
Abstract: 942,878. Tunnel diode circuits. ADVANCE COMPONENTS Ltd. April 19, 1962 [April 26, 1961], No. 15075/61. Heading H3T. [Also in Division G4] Two or more tunnel diodes are arranged so that one is in a different stable operating condition from the others, each pair of adjacent tunnel diodes being so coupled together that the application of an input pulse in common to all the tunnel diodes transfers the stable operating condition to a different tunnel diode. A ring counter comprises five tunnel diodes TD1-TD5 coupled by conventional diodes D1-D5. Assuming that TD3 is at point B of the curve and that the other tunnel diodes are at point A, then D3 is forward biased and D2 is back-biased. An input pulse of appropriate polarity acts on magnetic core M and winding L3 to increase the current through diode D3. Tunnel diode TD4 then moves to point E while TD3 moves to point E, the end of the pulse returning them to B and A, respectively, so completing a stepping movement. Setting, transfer, and read-out may be effected.
Patent GB-234651-A (GB)
Title: Improvements in or relating to apparatus for depositing powder on the skin
IPC: A45D33/34
Filed: 1924-06-23
Abstract: 234,651. MacLanachan, W. June 23, 1924. Pouches.-The leather, rubber, cloth or like pliable container A of a powder puff is formed similar to a double tobaccopouch, the powder-carrying medium C being attached to the projecting portion B of the 'back A' and adapted when folded into the pouch to contact with the perforated front G of the inner pocket H containing the stock of powder.
Patent GB-436170-A (GB)
Title: Improvements relating to the control of electric motors
IPC: H02P7/06
Filed: 1934-05-22
Abstract: 436,170. Controlling motors. PENSABENE, N., 126, Bridge Lane, Golders Green, London. May 22, 1934, No. 15196. [Class 35] [See also Group XXXVII] In order to maintain constant the speed of a motor A connected to a variable voltage supply V, a resistance B having a large positive temperature coefficient of resistance is connected in parallel with the field FF, and in series with an ordinary resistance R. A resistance regulator R1 may also be connected in the field circuit. The resistance B may be of iron wire in the form of a lamp.
Patent GB-252904-A (GB)
Title: Improvements in anti-dazzle devices for motor car head lamps
IPC: B60Q1/14
Filed: 1926-02-19
Abstract: 252,904. Bland, A. H. Feb. 19, 1926. Lantern shutters.-An anti-dazzle device for vehicle lamps, which is also adapted for use in fog, comprises a shutter having horizontally disposed pivotally mounted transparent slots which are coloured yellow, frosted. or treated to break up, dim, or diffuse the light. The slots 2 are pivotally mounted in a flat ring 1 and have clips 4 to which is hinged a vertical rod 5 to the lower end of which is pivotally connected a wire 6. The wires 6 from a pair of lamps pass through tubes 7 and are secured by means of pins 12 to blocks 11 slidably mounted in horizontal sockets 10 carried by a plate 8 secured to the back of the dashboard 9. The pins 12 extend through slots 13 in the sockets 10 and engage cam slots 14 in a rocker 15 mounted on a spindle 16 which is adapted to be rotated by a control handle 18 travelling over a dial plate 17 on the front of the dashboard, so as to control simultaneously the shutters of the two lamps.
Patent GB-557669-A (GB)
Title: Improved method of treating light metal scrap
IPC: C22B1/00
Filed: 1942-11-02
Abstract: 557,669. Rotary furnaces. STERN, M. Nov. 2, 1942, No. 15404. Convention date, Oct. 27, 1941. [Class 51 (ii)] Light metal scrap, particularly magnesium scrap in the form of borings, turnings or chippings. is treated for the removal of oil by charging it into an indirectly heated furnace so that the oil is liberated by contact with the heated furnace wall, while a cooling medium such as air is introduced into the furnace to cool the charge and carry away the oil vapour. About 80 per cent of the oil is removed from the scrap by centrifuging before it is fed to the furnace. Apparatus for carrying out the treatment is shown in the Figure and comprises a rotary indirectly heated kiln 1 fed with scrap from a hopper A and supplied with air which enters by an inlet 8 a discharge hopper 6 before entering the lower end of the furnace. The air carries away the oil vapour to a chamber 10 and stack 11.
Patent GB-578902-A (GB)
Title: Improvements in sealing ends for high voltage electric cables
IPC: H02G15/22
Filed: 1944-08-12
Abstract: 578,902. Cable sleeves; mounting terminal. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., BRAZIER, L. G., and HOLLINGSWORTH, D. T. Aug. 12, 1944, No. 15410. [Classes 36 and 38 (i)] In a sealing end for a high-pressure gas cable having a tubular insulator 2 sealed to a baseplate 1 by a cast plumb 20 and having a gasentry chamber 26, the chamber consists of a bell 21 sealed to the cable by a flange 22 and immersed in the plumb 20 which has a container comprising an inverted bell 12 attached to the base plate 1. A gas-inlet pipe 18 and a draining pipe 17 are fitted through the bell 12 and to different levels in chamber 26, which has a metal pipe 30 connected to a glass pipe 32 extending beyond the stress cone 29. The bell 21 has conical tongues 23 resting on the baseplate 1 which has a flange 19 to mould the plumb.
Patent GB-201697-A (GB)
Title: Improvements in or relating to tennis net adjusters
IPC: A63B61/04
Filed: 1922-06-01
Abstract: 201,697. Edwards, W. S., (trading as E'dwards & Son, W.). June 1, 1922. Lawn-tennis nets.- The ends of a tennis net adjuster-band are attached to spring clips 7 which engage with openings 4 in a U- shaped ground peg.
Patent GB-238998-A (GB)
Title: Improvements relating to motor lorries and trailers
IPC: B60P3/04
Filed: 1924-06-27
Abstract: 238,998. Hozack, J. June 27, 1924. Vehicle fittings.-In a motor lorry and trailer used in combination for the transport of cattle and heavy goods, the tail-board 7 of the lorry is adapted for use as a gangway between the lorry and trailer, and the tail-board 5 of the trailer serves as an entrance ramp. Removable sides 8 may be provided for the gangway, or the sides may be hinged to the trailer or to both lorry and trailer and meet midway. The tail-board 5 may have similar sides 6. The tail-board 7 may serve as .an entrance ramp to the lorry, with or without an additional support, when the lorry is used alone.
Patent GB-221573-A (GB)
Title: Improvements in or relating to the production of type matrices
IPC: B41B11/00
Filed: 1923-06-15
Abstract: 221,573. Pierpont, F. H., and Lanston Monotype Corporation, Ltd. June 15, 1923. Printers' apparatus.-In the production of justified type matrices, the punch, by which the character impression is produced, is used as a gauge for the subsequent trimming operations by which the character impression is brought into proper relation to the sides of the matrix-block. The punch and the matrix-block are removed from the press as one, and the punch is placed against an L-shaped or other stop or abutment, which determines its position relative to cutters or other devices by which superfluous metal is removed from two opposite sides of the matrixblock. The other two sides of the black are similarly treated, and the rear surface is simultaneously trimmed with relation to the end of the punch, which is rested upon a stop located in gauged relation to other cutters. The matrixblock is then removed from the punch, and its rear surface is used as a gauge for the trimming of the face of the block containing the character impression. The trimming may be effected by rotary cutters of known type operated in pairs.
Patent GB-971190-A (GB)
Title: Improvements relating to azo pigments
IPC: C09B41/00
Filed: 1962-04-25
Abstract: A process for the production of disazo pigments by coupling a diazonium compound with a bis-[21-hydroxy-naphthoyl-(31)-amino] substituted compound which is difficultly soluble in water or in dilute acids is characterized in that the coupling reaction is performed at emperatures from about 0 DEG  C. to about 70 DEG  C. in an aqueous reaction medium in the presence of auxiliaries which promote azo coupling and in that the dispersed reaction mixture is subjected to intensive mechanical disintegrating forces until the reaction is substantially complete, which forces maintain an average particle size of the difficulty soluble coupling component and the resulting disazo pigment below 5 m .  The apparatus used to maintain the desired particle size may be ball or sand mills, high-frequency stirrers operating at 1000 to 20,000 r.p.m., high-pressure mills, turbine mixers, colloid mills and jet mixers. Suitable dispersing agents and inert organic solvents for use in the process are listed. In examples: 2,5-dichloroaniline is diazotized and reacted with 1,4 - bis [21 - hydroxynaphthoyl - 31 - amino] -benzen in a high-frequency stirrer with stator and rotor operating at 10,000 r.p.m. (1); 2- aminobenzene - 1 - carbonic acid methyl ester is diazotized and reacted with 4,41-bis-[21-hydroxy - naphthoyl - (31) - amino] - diphenyl whilst stirring vigorously with quartz sand (2); a similar process is carried out in a high-speed stirrer causing high shearing stress between rotor and stator (3); 5-chloro-2-methyl-1-amino benzene is diazotized and coupled with 4,41 - bis [21 - hydroxynaphthoyl - (31) - amino]-diphenyl in a high-velocity stirrer fitted with baffle plates (4) and 3,31-dimethoxy-4,41-di-aminodiphenyl is diazotized and coupled with 4,41 - bis [21 - hydroxynaphthoyl - (31) - amino]-diphenyl in an apparatus similar to that employed in (3).  The sodium salt of a naphthalene sulphonic acid-formaldehyde condensation product is employed in most examples as dispersing agent and some products are improved by boiling with dimethyl aniline or o-dichlorbenzene. A protective colloid such as methyl cellulose may be mixed into the coupling suspension. Specifications 730,384 and 861,443 are referred to.
Patent GB-940608-A (GB)
Title: Scribing instrument
IPC: B43K8/00
Filed: 1961-05-01
Abstract: 940,608. Engraving. S. E. PAVELEK. May 1, 1961, No. 15720/61. Heading B6J. [Also in Division B4]  A scribing instrument comprises a ring-like body, means for supporting said body a predetermined distance above a working surface with its axis perpendicular thereto, a tube supported concentrically in the body so as to be freely rotatable as the body is moved over the working surface by an operator, and a tool having a working point and supported on means rotatable with and rigidly fastened to the tube so as to be disposed eccentrically of the axis of the body. A ring 20, Fig. 2, is supported on a working surface by three legs 14 each comprising a ball 15 spring-urged downwardly, so that downward pressure by the operator is necessary during the engraving operation. A carrier 16 is threaded into the ring so as to be vertically adjustable for depth of cut by rotation. The carrier embodies an annular recess receiving a bearing structure 23 having a stationary part clamped in the recess by a plate 25 and an inner part 27 rotatable about the axis 39 on balls 28, said inner part supporting a tube 29. A work head member 35 is supported frictionally, or positively by screws 37, on the tube 29. A cutting blade 40 is supported in a block 44 mounted in one of recesses 47, 48 in the member 35 at different distances from the axis 39 so as to position the working point 41 at one of two selected distances from the axis. Alternatively, the blade can be cemented into a transparent plastic disc supported on the work head. A magnifying lens 54 is removably supported by a structure 55 on the carrier 16. In another form, Fig. 5, the tube 76 is threaded internally to receive the work head 77, and the work head has ribs 78 and a groove 79 to receive a needle carrier block 80. The block 80 is mounted on the head 77 by means of an arcuate groove 82, Fig. 6, and a screw 84 which can be tightened to prevent rotation of the block about the axis. The needle 85 is radially adjustable by a screw 98. The carrier 73 can be locked into position in the ring 70 by means of a slot 86 through a segment of the carrier to remove part of one of the threads and provide separated thread portions 87, 88. An aperture 89 through the separated portions is threaded only in the portion 88. A stud 90 is inserted in the aperture 89 and turned to engage its threads with those of the aperture. The stud 90 is bored to receive a lens and mounting 92. The tube and head can be mechanically rotated by a shaft 93, a friction wheel 95 attached to which rests on a flange 75 of the tube when a stem 96 is inserted in a socket 97 on the carrier 73. The work head can be locked within the ring by a slidable plate 102 having arms 104 for releasably engaging the sides of the block 80.
Patent GB-1506795-A (GB)
Title: Drive mechanism
IPC: F16H9/06
Filed: 1976-04-15
Abstract: 1506795 Change-speed control DUAL GEBRUDER STEIDINGER KG & CO GmbH 15 April 1976 [19 April 1975] 15755/76 Heading F2D A belt 3 passing round a stepped motor pulley 5 for driving the turntable 2 of a record player is displaceable laterally by a fork 6 pivotally mounted at 7 and actuated by an oblique surface 10 of an arm 9 extending from a rotary speed selector 8, the arm 9 being resilient so that if a speed change is selected when movement of the fork is blocked by a projection 17 or 18 on a blocking arm 15 the arm 9 is resiliently deflected and actuates the fork subsequently when the latter is released. When a starting lever 23 is operated to close the motor switch 24 it biases the blocking arm, through a spring 26, in the direction to release the fork but a pawl 20 pivotally mounted at 19 and engaging the belt on the turntable prevents movement of the blocking arm to release the fork until the turntable starts to rotate. A spring 21 resets the pawl when the motor is switched off.