baber/WOPTO huggingface dataset:
Patent GB-1458707-A (GB)
Title: Image density control apparatus
IPC: G03G15/09
Filed: 1974-05-16
Abstract: 1458707 Colour electro-photography XEROX CORP 16 May 1974 [17 May 1973] 21770/74 Heading G2H A multi-colour copying machine of the kind having a photo-conductive surface 12, includes: means 16 for uniformly charging the surface 12; at least one neutral density sample 32 having a preselected density corresponding to substantially the pre-determined cut-off density of toner particles deposited on a single colour electrostatic latent image recorded on said charged surface 12; means for exposing the charged surface 12 to a single colour light image of an original document 25 to record thereon said single colour latent image, said exposing means being arranged to illuminate said sample 32 and project a light image thereof on to the charged surface 12 to record thereon a sample electrostatic latent image having a potential intermediate the single colour latent image and the non- image regions of the charged surface 12; means 38 for depositing toner particles, complementary in colour to the single colour latent image, on the charged and exposed surface 12; and means 28 for sensing the potential of the sample latent image and electrically biasing the toner depositing means 38 to a potential corresponding to the sample latent image potential so that toner particles are deposited on regions of the photo-conductive surface 12 having a potential substantially greater than the potential of the sample latent image. In a three colour machine, as shown, a different neutral density sample 32, 34, 36 is used for each of the three different colour separation exposures, the samples 32, 34, 36 being carried on a rotatable disc 22. Suitable control circuity is described.
Patent GB-1153195-A (GB)
Title: Improvements in or relating to Battery-Operated Electrical Apparatus
Inventor: CHAMBERS FREDERICK CHARLES
IPC: H01M2/10
Filed: 1966-05-17
Abstract: 1,153,195. Hearing aids; battery containers. AMPLIVOX Ltd. 17 May, 1967 [17 May, 1966], No. 21902/66. Heading H4J. [Also in Division H1] A hearing aid or other electrical apparatus comprises a battery container 3 (Fig. 4) consisting of generally circular coaxial ends 11, 12 connected by a substantially semi-cylindrical wall 17 (Fig. 5). The container 3 is mounted in an apertured body (1), Fig. 1 (not shown), for limited rotation between a first position in which a battery may be placed in or removed from the container 3 and a second position in which the battery is retained in the container 3. The container 3 is housed in an arcuately formed end (2) of a two-part body (1) of a hearing aid adjacent a switch lever (4). The edges of the cylinder ends 11, 12 have rebates 14, 15 to fit within circular recesses in the body (1) so that the container 3 may be rotated about its axis by a projecting lug 16 on the wall 17. Movement of the lug 16 in one direction provides an opening in the apparatus for insertion of a battery. A generally circular printed circuit switch (Figs. 7, 8, not shown) is movable between four positions, one of which is the " off " position. Alternatively, slight movement of the container 3 may provide an on-off facility independent of the switch.
Patent GB-225606-A (GB)
Title: Improvements in or relating to creeping traction mechanism
IPC: B62D55/06
Filed: 1923-08-30
Abstract: 225,606. White, A. E., (Bucyrus Co.). Aug. 30, 1923. Excavating.-A heavy portable machine for excavating, &c. has an endless track engaged by idler wheels 18, guide wheels 44, and driving wheels 25. The frame comprises longitudinals 1, end bars 2, and transverse bars 3, 4 and supports a turntable casting 7. The guide wheels 44 are mounted on stub axles 43 carried by brackets 41 secured by tie-bolts 13 which pass through the turntable 7. Specification 226,852 is referred to.
Patent GB-253954-A (GB)
Title: Improvements in, or relating to, the manufacture of threads, filaments, bands and the like from viscose
IPC: D01D5/247
Filed: 1924-09-17
Abstract: 253,954. Courtaulds, Ltd., Hegan, H. J., and Bayley, F. Sept. 17, 1924. Cellulose xanthates, processes for making filaments from.-Hollow filaments, threads, bands, &c. are made by employing a viscose in the preparation of which not less than 3 per cent and not more than 5 per cent of caustic soda has been employed; the viscose to be used otherwise contains 6-8 per cent of cellulose, and is prepared with 30-40 parts of carbon disulphide to 100 parts of cellulose. To the viscose solution may be added a fluid either in suspension or solution, which in the bath will give rise to a gas, or it mav contain a substance such as sodium carbonate which on entering the bath will give rise bv chemical action to bubbles within the threads &c. Such an addition is, however, unnecessary, if the proportion of caustic soda in the viscose is low. In an example, a viscose prepared from a ripened alkali-cellulose is dissolved in dilute caustic soda solution, and a solution of sodium carbonate added; after subjection to a vacuum, the viscose solution is spun in a bath such as is described in Specification 406/11. Specifications 8700/92, 20801/00, [both in Class 2, Acids and salts. Organic &c.], 7748/10, 15752/10, 1436/11, 24291/14, 143,253, and 189,973 also are referred to.
Patent GB-394828-A (GB)
Title: Improvements in and relating to dielectric for electric apparatus
IPC: H01G4/22
Filed: 1932-08-05
Abstract: 394,828. Condensers. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Clark, F. M. ; 12, Concord Parkway, Pittsfield, Massachusetts, U.S.A.) Aug. 5, 1932, No. 22059. Convention date, Aug. 6, 1931. [Class 38 (ii).] A fixed condenser, with paper or like fibrous separation for the electrodes, has for its impregnating medium halogenated, for example chlorinated, diphenyl oxide the chlorine content of which may be between 40 and 51 per cent. Specification 374,439 is referred to. The Specification as open to inspection under Sect. 91 comprises also the use of any halogenated diaryl, for example chlorinated diphenyl, chlorinated diphenyl substitution products, or mixtures of diaryl compounds with one another or with mineral oil. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1189355-A (GB)
Title: Improvements in and relating to Semiconductor Devices
IPC: H01L29/06
Filed: 1967-05-12
Abstract: 1,189,355. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 May, 1967 [17 May, 1966], No. 22096/67. Heading H1K. One electrode 7 of a junction-gate field effect transistor is shielded from the main bulk 2 of the semi-conductor body which comprises the gate region, by means of a shielding layer 13 which is electrically connected to the other electrode 6 of the transistor. In the embodiment shown the shielding layer 13 comprises an N-type surface region of the semi-conductor body connected to the N-type source (or drain) region 4 by a region 15. The shielding layer is isolated from the P-type bulk 2 of the body by the junction 14. The shielding layer may alternatively comprise a metal coating insulated from the body 2 by an insulating coating, e.g. of silicon oxide or silicon nitride, and connected to the electrode 6 by a conductor deposited on the insulating coating. In the form illustrated the electrodes 6, 7 are interdigitated and are connected to the source and drain regions through apertures in the insulation 3. The body 2 is of P-type silicon 61 carrying a relatively high resistivity N-type epitaxial layer 62. Diffusion of boron through a mask isolates the required N-type pattern, and a further diffusion of phosphorus between the source and drain regions converts some of the material there to P-type and thus restricts the thickness of the N-type channel. The electrodes 6, 7 are of vapour deposited aluminium selectively etched to the required shape. Alternatively the device may be manufactured simply by two diffusion steps into a substrate. The semi-conductor body may also be of germanium or an A III B V  compound. Two independently connected gate regions may be provided, and the shielding layer may be connected to the electrode 6 outside the envelope which encloses the device.
Patent GB-1492493-A (GB)
Title: High yield refuse separation apparatus
IPC: B07B4/02
Filed: 1975-05-22
Abstract: 1492493 Pneumatic separation NEW LIFE FOUNDATION 22 May 1975 22115/75 Heading B2H An apparatus for the pneumatic separation of municiple refuse comprises a chamber 11 having an inlet 8 for the material to be separated, a spreader member 20 having conical upper and lower surfaces 21 and 23 which define an annular venturi throat 24 with the wall 12 of the chamber means 25 for drawing air and entrained light material upwardly through the chamber, and an outlet 13 for the heavier material at the bottom of the chamber. Clumps of adherent material are broken up by vanes 17, alternate adjacent pairs of which are connected by surfaces 33 and 34. The vanes 17 and spreader 20 are mounted on a rod 18 whose lower end may be attached to a horizontal bar 37 whose ends are attached to the wall 12. The bar 37 is covered by a pair of rotating sleeves 40. In the embodiment shown the spreader 20 has passages 32 through which some of the air flows. In other embodiments, Figs. 6 and 8 (not shown) the rod 18 is hollow and has air blown downwardly through it, the air issuing through ports (58) between the vanes 17 and through ports (62) in the upper surface of the spreader 20. A deflector ring 65", Fig. 12 may be located in the chamber 11 below the spreader 20. In the embodiment shown, the ring is formed of a plurality of segments 82, which are radially slidable in a channel shaped protrusion 90 in the wall 12. In another embodiment, Fig. 11 (not shown) the ring segments (75) are hinged to the wall 12 and are moved between extended and retracted positions by rods (79). Air may be blown into the chamber through ports (72) in the wall 12 just below the deflector ring. A funnel-like member (52) Fig. 5 (not shown) having walls covered with an elastomeric material may be located beneath the outlet 13. The material passing through the outlet 13 bounces off the member (52) and is deflected toward the centre so that air sweeping upwardly through the member (52) will carry away any remaining lightweight material. The heavy material falls onto a conveyor (31).
Patent GB-359540-A (GB)
Title: Synchronizer for rotary devices
IPC: H04L7/00
Filed: 1930-07-24
Abstract: 359,540. Synchronous movements. CONNERY, A. F., 22, Revere Place, Brooklyn, and INTERNATIONAL COMMUNICATIONS LABORATORIES, Inc., 67, Broad Street, both in New York, U.S.A. July 24, 1930, No. 22322. [Class 40 (iii).] A rotary distributer 25 or the like is synchronized by a correcting member 40, which is constantly tending to move into an operative position to actuate correcting means 47, is held in an inoperative position by a latch 36 released by a magnet 29 responsive to a correcting impulse, and is afterwards mechanically returned to reset the latch. Each time the tongue 16 of a corrector relay 15, operated by a line relay 11, contacts with a contact 18, a circuit is closed through a relay 20, the operation of which is retarded by an adjustable resistance 19. Until the relay responds, a solid ring 26 of a distributer is connected for an instant through the relay armature 56 to a positive potential 61. If the distributer is in synchronism, the brush 25 is at this instant on a dead segment 59, but if the brush, which is driven slightly faster than that at the transmitter, is on a conducting -segment 57, a circuit is closed through the fast-operating corrector magnet 29, which releases the catch 36 to allow a spring 60 to pull a cam follower 38 with the correcting pin 40 to the left. The correcting pin is then in a position to engage the teeth of the star wheel 47 as it is rotated about a shaft 32, and to rotate the wheel slightly so that a detent roller 54 comes to rest between the next pair of teeth. The rotation of the wheel gives a member 51 a slight rotary movement through gears 49, 50 to retard the brush 25 a definite angular distance. After the wheel has passed the corrector pin, a cam 44 causes the follower 38 to withdraw the pin, and the follower is held inoperative by the latch 36 until the magnet 29 is again operated.
Patent GB-1473100-A (GB)
IPC: C12N9/80
Filed: 1973-05-10
Abstract: 1473100 Deacylation of cephalosporins GLAXO LABORATORIES Ltd 1 May 1974 [10 May 1973] 22380/73 Heading C2C N-deacylation of 7#-phenoxy-acetamido cephalosporins is effected by the action of an amidohydrolase enzyme which is derived from a bacterial source, which is free from cells and deleterious enzymes, which is stabilized in solution by the presence of ferrous ions and which is effective to cause optimal N-deacylation at a pH of 3À5 to 6À5. The bacterial source of the enzyme is preferably Erwinia anoideae. The ferrous ions are preferably present in concentrations of from 0À1 to 1À0 mM, in the form of a water-soluble non-chelated ferrous salt, e.g. ferrous sulphate or ferrous ammonium sulphate. The activity of the enzyme may be improved by addition of a thiol.
Patent GB-1430096-A (GB)
Title: Glass composition for producing microporous articles
IPC: C03C4/00
Filed: 1973-03-01
Abstract: 1430096 Boro-silicate glass PPG INDUSTRIES Inc 1 March 1973 [1 Dec 1972] 22437/75 Divided out of 1430094 Heading C1M A glass composition suitable for producing a low alkali metal oxide-borate containing microporous glass article comprises, in per cent by weight: 30-46% SiO 2 , 40-55% B 2 O 3 , 5-15% of a fluxing agent selected from alkali metal oxides such as Na 2 O and K 2 O, alkaline earth metal oxides such as BaO, CaO and NgO, PbO, CdO, SnO, and ZnO, and 0-4% Al 2 O 3 . This glass may be phase separated by heating the glass, particularly in the form of beads, to a temperature of 420-700 C. for 1-64 hours. This heat treatment causes the glass to become separated into two distinct phases, one of which is rich in boric oxide and alkali and is soluble in water and acids, and the other rich in silica and insoluble in water and acids. The glass is further characterized by a bluish opalescence due to the separation of the phases. The glass is used to produce microporous glass articles (see Specification 1,430,094) using the process set out in Specification 1,430,095.
Patent GB-1291739-A (GB)
Title: Process for producing 2-alkylidene norbornane derivatives
IPC: C07C69/013
Filed: 1970-05-08
Abstract: 1291739 Separating norbornenes from nortricyclenes SUMITOMO CHEMICAL CO Ltd 8 May 1970 [16 May 1969] 22483/70 Heading C5E [Also in Division C2] A 5-alkylidene-2-norbornene or 5-alkenyl-2- norbornene are isolated from a mixture with a 1-alkenyl nortricyclene of the formula where R<SP>1</SP> is hydrogen or alkyl of 1-8 carbon atoms by reacting the mixture with a compound of the formula R<SP>2</SP>OH, where R<SP>2</SP> is hydrogen or alkyl or acyl of 1-6 carbon atoms, in the presence of, as catalyst, palladium on charcoal, an inorganic acid, an aqueous solution of an inorganic acid or an organic sulphonic acid, wherein the nortricyclene reacts to form a compound of the formula and the unreacted norbornene can be separated therefrom.
Patent GB-896632-A (GB)
Title: Jib crane structure
Inventor: KERRIDGE NORMAN EDWARD
IPC: B66C5/10
Filed: 1959-06-30
Abstract: 896,632. Slewing jib cranes. STOTHERT & PITT Ltd. June 21, 1960 [June 30, 1959], No. 22484/59. Class 78 (4). In a travelling crane the luffable jib J and superstructure are mounted on a tube 1 which is reinforced by radial stretchers united at their centres to an axial strut and staggered to form steps by which the superstructure may be reached. As described, the tube 1 is rotatably mounted within four legs 13, mounted on bogies 16, and united by a box-member formed from plates 23 and by arched members 14. The latter are box-like and have their inner ends closed by plates which abut and are bolted together. Bearings are provided on the bottom and top of the tube which is slewed by a ring 26 and pinion 28. The stairway within the tube 1 is a spiral one and provides access to a machinery housing M and a driver's cabin D, the top of the jib-supporting structure A being reached by ladders 66, 59, 57. All the superstructure of the crane is supported on a bed 10 of box construction which revolves with the tube 1. A roller ring, co-operating with rollers inside the slewing ring 26 is attached to the tube 1 immediately below the bed 10. The jib J is luffed about pivots 52 by an hydraulic ram R, as described in Specification 896,633, mounted in trunnions in the structure A. Both the jib and the structure A are fabricated from tubes. Wherever possible all assembly bolts are enclosed within the tubular members to which they are attached.
Patent GB-421663-A (GB)
Title: Improvements in directional lighting fittings
IPC: F21V13/04
Filed: 1933-08-11
Abstract: 421,663. Street &c. lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, WEIR, W., and WILSON, G. H., c/o General Electric Co., Wembley, Middlesex. Aug. 11, 1933, No. 22493. [Class 75 (iv)] A fitting for street - lighting and the like by means of a linear source 1 having its axis horizontal and perpendicular to the length of the street or the like comprises refractory prisms 12 at the side or sides of the source with edges not substantially longer than the source and parallel to said axis, so constructed and arranged relatively to the source and so associated with any reflecting means included in the fitting that the polar distribution curve of the source and fitting in a vertical plane containing the length of the street is " disc-like." The polar distribution curve, Fig. 1, is termed " disc-like " when the maximum radius vector occurs at a value of # not less than 60‹ ; the radius vector decreases rapidly as # increases beyond the maximum value ; the curvature at all points distant from the maximum is much less than in the neighbourhood of the maximum and there is no region of great curvature at small values of #. One form of fitting, Fig. 3, comprises a linear source 1, lower side members 5, 5<1> with prisms 12 on their outer surfaces, an upper reflector comprising two paraboloidal sheets 7, 71 meeting above the source in the form of a V. The prisms and reflectors direct most of the light in planes at about 75‹ to the vertical. Regions immediately below the source are lit by direct light only. To avoid patchy distribution in directions nearer the horizontal, the upper parts of the sides of the fitting are provided with panels 6 of lined glass. The fitting has opal end members. In a modified form, Fig. 7, the source is positioned within a trough 3 having prisms at the lower parts of the sides. In a further modification, the reflectors are omitted and the prisms 12 extend to the top of the trough. If the light is required to be distributed to one side only of the source, the light on the other side can be suppressed by an opaque screen. Specification 298,839, [Class 75 (iv)], is referred to.
Patent GB-316188-A (GB)
Title: Improvements in or relating to four-stroke cycle motors
IPC: F02B75/24
Filed: 1929-07-23
Abstract: 316,188. Aktiebolaget Pentaverken. July 24, 1928, [Convention date]. Void [Published under Sect, 91 of the Acts]. Four - stroke-cycle engines.-Mixture is drawn into the crank case 6 of a co-axial cylinder engine past the spring loaded valve 12 at the end of the induction pipe 11 and a controlled valve 14. The cylinders fire simultaneously or alternately. The valve 12 may be engine controlled. Delivery from the crank case passes by the valve 14 to the inlet pipes 8.
Patent GB-447030-A (GB)
Title: Improvements in methods and installations for the transportation and distribution of gas
IPC: F17D1/04
Filed: 1934-08-03
Abstract: 447,030. Drying gas. S.A.P.A.C.I. SOC. ANON. POUR L'EXPLOITATION DES BREVETS ET LICENCES SAPACI, 131, Boulevard Malesherbes, Paris. Aug. 3, 1934, Nos. 22735, 22736, 22737, and 22738. Void [Abridged as open to inspection under Sect. 91 of the Acts, Feb. 4, 1935]. [Class 34 (i)] [See also Group XXIX] Condensation of water in the pipes of a gas distribution system is prevented by cooling the gas leaving the generating station to a low temperature. The gas may also be dried by passage through a series of drying chambers, a drying agent such as a concentrated solution of calcium chloride being circulated in the opposite direction through the drying chambers, a chamber in which the absorbed water is evaporated, and a cooling chamber. In the apparatus shown the gas issuing from the compressor 31 passes to the delivery pipe 36 through a cooler 32 connected to a cold water main 33 and a drying chamber 35 into which a jet of concentrated cold calcium chloride solution is delivered from a reservoir 41 by a pump 42. The calcium chloride solution passes to a reservoir 37 from which it is delivered 'in a finely divided state into an evaporator 39 which is maintained at sub-atmospheric pressure by a pump 40. From the evaporator 39 the solution drains into the reservoir 41. Some of the solution in the reservoir 41 may be supplied by a pump 43 to the reservoir 37 which may also receive water through a pipe 44. The water vapour generated in the evaporator 39 passes through a large passage 51 to an absorber 45 where it is absorbed by sulphuric acid which is pumped from a reservoir 48 after passage through a cooler 50. The hot diluted acid from the absorber 35 passes to the reservoir 48 or to an escape pipe 46. Fresh concentrated acid is supplied to the reservoir 48 by a pipe 47. The water supplied to the coolers 32, 50 is discharged through a pipe 53. In a modification part of the hot diluted acid from the absorber 45 is returned by a pump to the absorber and the remainder is circulated through a reconcentrating apparatus. In another apparatus the gas is dried by direct contact with sulphuric acid.
Patent GB-1465768-A (GB)
Title: Apparatus for the removal of carbon dioxide from air
IPC: H01M8/0668
Filed: 1974-05-21
Abstract: 1465768 Removing CO 2  from air SIEMENS AG 21 May 1974 [22 May 19731 22758/74 Heading C1A CO 2  is removed from air by passing the air under slight pressure, preferably 1-100 N/m.<SP>2</SP>, over the surface of porous corrugated panels 11 impregnated with a liquid, e.g. KOH which removes CO 2  and arranged parallel to, and spaced apart from, each other and mounted in a housing 10 having an inlet and outlet, the air being passed in a direction transverse to the corrugations. The panels may be of sintered polyvinyl chloride or foamed carbon and have a porosity more than 30% total volume. Air fed to the metal/air battery of an electrically powered vehicle may be treated by the method.
Patent GB-844006-A (GB)
Title: Mechanism for transferring a blank from one die station to another in a header or similar machine
IPC: B21J13/08
Filed: 1958-07-16
Abstract: 844,006. Forging. WATERBURY FARREL FOUNDRY & MACHINE CO. July 16, 1958 [July 30, 1957], No. 22790/58. Class 83 (4). Mechanism for transferring workpieces between dies 12 in a header or like machine comprises a pair of cooperating gripping fingers 30, 31 pivotally mounted on a carrier 22 for movement thereby across the face of the dies, and linkage means 40, 44, 46 on the carrier for effecting both opening and closing movements of the fingers. The fingers 30, 31 are mounted on holders 26, 27 pivoted at 28, 29 and having integral with or rigidly connected thereto curved extensions 36, 37 coupled by links 40, 41 to a cross-bar 44 pivoted at 45 to a vertical slide-member 46. The latter is actuated through bellcrank and rod linkage, Fig. 3 (not shown), by a rotating cam and a spring-biased follower. The closed position of the fingers is adjustable by screws 34, 35 and the actuating linkage enables the finger 30, which has a work-receiving groove 32, to close before finger 31. Sets of gripping fingers are adjustably mounted on carrier 22 which is moved in an arcuate path by crank-pins 16, as described in Specification 760,639.