baber/WOPTO huggingface dataset:
Patent GB-1475093-A (GB)
Title: Electrode mounting assembly in high-pressure sodium discharge lamp
IPC: H01J61/36
Filed: 1974-10-30
Abstract: 1475093 Metal vapor lamps THORN ELECTRICAL INDUSTRIES Ltd 30 Oct 1975 [30 Oct 1974] 47037/74 Heading H1D A high pressure Na discharge lamp has a ceramic tube 10 with ceramic end discs 11, metal tube 14 and electrode 13 carried by stem 12 which extends with clearance through an inner portion of the tube and is hermetically secured to the inner surface of the tube in a zone outside the end disc. Control of the operating voltage by means of the coolest temperature of the lamp, especially in low wattage lamps requiring mounting of the electrode close to the lamp wall, is discussed. Stem 12 may be secured to the tube by rolling or crimping followed by brazing. Recessing of the tube behind the inner surface of the envelope reduces risk of contact between the electrode coil and the tube, and also reduces the risk of arc-back. Tube 10 may be of alumina sintered to alumina end wall 11, and stem 12 and coil 13 of refractory metal such as W. Coil 13 may be coated with electron emissive material, Nb tube 14 sealed via a ring of sealing glass leaving fillet 15, and a titanium brake 17 is also shown.
Patent GB-1372392-A (GB)
Title: Piston and cylinder assemblies
IPC: F15B15/22
Filed: 1971-10-13
Abstract: 1372392 Fluid actuators; damping INTERNATIONAL HARVESTER CO 13 Oct 1971 [13 Oct 1970] 47641/71 Heading F1D In a fluid operated actuator employing a piston reciprocable in a cylinder, such as device for converting linear movement of a piston into rotational movement of a shaft, the piston 19 is provided with a recess 34 within which is located a partcylindrical member 40 which is employed in damping the stroke of the piston 19. A bore 45 in piston 19 communicates with recess 34 and the external surface of member 40 has grooves 44. Thus when the piston 19 reaches the end of its stroke the member 40 is urged towards the exhaust port 30, Fig. 1, and fluid flows from the chamber 20 through the bore 45 to recess 34 and thence past grooves 44 to the port 30. The grooves thus reduce the rate of exhaust of fluid from the chamber 20.
Patent GB-1029078-A (GB)
Title: Xerographic method of and apparatus for producing the reversal of a photographic multicolour original
IPC: G03G15/01
Filed: 1963-12-03
Abstract: 1,029,078. Electrophotographic processes, optical systems. GRETAG A. G. Dec. 3, 1963 [Dec. 7, 1962], No. 47757/63. Headings G2A, G2H and G2J. In order to facilitate the selection of colour negatives for printing, a positive projected image is obtained from the negative by a xerographic process, in which colour separation electrostatic latent images of the negative are developed and the developed images projected in superposition on a viewing screen. As shown a three colour camera beam-splitting arrangement employing dichroic mirrors 6 (reflecting blue light only) and 7 (reflecting green light only), forms colour separation electrostatic latent images 16,14 and 15 of a colour negative 3a, on a band 17 having a changed photoconductive insulating layer 13 on a flexible conducting backing. In order to develop the images, a magnetic roller 24, loaded with toner and magnetic carrier particles from trough 25, is slid along rails 27 in contact with layer 13. After development, inclined half-silvered mirror 4 is placed in the optical system and negative 3a is removed. Colour correction filters 28, 29, 30 may also be removed or replaced by another set. The developed images 14, 15 and 16 are projected in superposition on ground glass screen 31 by objective 5 and light souce 1. The band 17 is changed by winding roller 18 or 19 so that fixed brush 26 returns the toner to trough 25 and corona discharge device 21 charges a fresh section of the band. The photoconductive material may be either zinc oxide or silenium and the layer 13 may be either transparent, white or black. An aluminium foil backing may reflect light through the layer 13. The toner used may be black or white, the former being charged to the same polarity as the contrasting layer 13 and the latter being charged to the opposite polarity. Instead of relying on source 1 for the projection illumination, a white powder image may be illuminated by sources near layer 13 or, alternatively, a transparent layer 13 on a transparent backing may be used for diascopic projection. The use of a half-tone screen and of further multiple colour separations is referred to.
Patent GB-1531497-A (GB)
Title: Water soluble monoazo hydrazinium dyestuffs
IPC: D06P5/28
Filed: 1976-09-29
Abstract: 1531497 Monoazo hydrazinium dyestuffs IMPERIAL CHEMICAL INDUSTRIES Ltd 29 Sept 1976 [24 Nov 1975] 48149/75 Heading C4P Novel water-soluble dyestuffs, free of SO 3 H and CO 2 H groups, have the formula wherein D is aryl and contains at least one substituent selected from NO 2 , CN, -SO 2 NR<SP>8</SP>R<SP>9</SP> and -SO 2 R<SP>10</SP> in which R<SP>3</SP> and R<SP>9</SP> are H or optionally substituted alkyl or aryl and R<SP>10</SP> is optionally substituted alkyl or aryl; D may contain other substituents; R<SP>1</SP> is H, or C 1-4  alkyl or alkoxy; R<SP>2</SP> is H, or R<SP>1</SP> and R<SP>2</SP> together form a fused-on ring which may contain hetero atoms; R<SP>3</SP> is halogen; Y is alkylene; X- is an anion; n is zero or 1; when n is 1, R<SP>4</SP> is optionally substituted alkyl, cycloalkyl or phenyl; R<SP>5</SP> is optionally substituted alkyl, cycloalkyl or phenyl or -NR<SP>4</SP>R<SP>5</SP> is heterocyclyl, R<SP>6</SP> is H or optionally substituted alkyl and can also be phenyl when neither R<SP>4</SP> nor R<SP>5</SP> is phenyl, and R<SP>7</SP> is H or optionally substituted alkyl, and when n is zero, -NR<SP>4</SP>R<SP>5</SP> is where Z is -(CH 2 ) 2 OH or C 1-4  alkyl. They are prepared by diazotizing DNH 2  and coupling with the appropriate hydrazinium compound, and are used to dye synthetic polymeric material such as those based on polymers and copolymers of acrylonitrile and of dicyanoethylene and on polyesters, polyamides and cellulose esters.
Patent GB-1473229-A (GB)
Title: Motor vehicle steering lock
IPC: B60R25/02
Filed: 1974-11-07
Abstract: 1473229 Steering lock HANS KOLB KG 7 Nov 1974 [8 Nov 1973 28 March 1974] 48154/74 Heading E2A  A steering lock for motor vehicles has a sliding bolt 8 loaded by spring 7 in the locking direction and a cylinder lock 2, the rotatable barrel 3 of which is secured to a control cam 4 for rotation therewith so that, on rotation of the barrel, the bolt is moved from its locking position to its unlocking position and retained there by cam 4 until withdrawal of key 11 upon which the cam 4 is axially displaceable to release the bolt, the barrel 3 being axially fixed and the cam 4 and/or barrel 3 having a movable coupling member 15 to control the axial movement of the cam on key withdrawal. As shown, cam 4 has an eccentric portion 5 and a bar 6 operating ignition switch 9 and having a slot for the passage of bolt 8. Cam 4 is urged in the direction of key withdrawal by spring 19 and is coupled to barrel 3 by axial pins 17. Bolt 8 has a spring loaded axially movable detent pin 20. The coupling member 15 is pivoted on pins 23 which are slidable in grooves 24 in the side walls of a slot 22 in cam 4, one end 28 of the member 15 co-operating with an internal annular groove 29 in housing 1 and the other end 30 co-operating with the tip 16 of key 11. In Fig. 1, cam 4 is retained in its rearmost position by member 15 against spring 19, the key tip 16 holding member 15 in groove 29. If key 11 is withdrawn, member 15 is released and cam 4 urged forwardly, member 15 moving upwardly out of groove 29 against spring 25. Detent pin 20 is released and bolt 8 moved to its projecting, locking position by spring 7 (Fig. 2, not shown). Upon insertion of the key, its tip 16 engages end 30 of member 15 which pivots about pins 23, (Fig. 3, not shown). If key 11, barrel 3 and cam 4 are rotated, the control surfaces. 21 on housing 2 move cam 4 to its rearward position, the eccentric portion 5 engaging arm 31 to withdraw the bolt 8 to its unlocked position. End 28 of member 15 enters groove 29 and end 30 thereof slips under tip 16 of key 11 as in Fig. 1. The control cam 4 may be spring-loaded either in the direction of key withdrawal or opposite thereto. The coupling member 15 may be a lever and/or a slide or a plate-shaped tumbler and may be movable in the control cam 4 and/or the barrel 3.
Patent GB-1404971-A (GB)
Title: Corrosion inhibitors
IPC: C23F11/08
Filed: 1972-10-19
Abstract: 1404971 Corrosion inhibition SHERWINWILLIAMS CO 19 Oct 1972 [17 Jan 1972] 48293/72 Heading C7E A composition for inhibiting corrosion of metal in a water system comprises an aqueous solution containing 0.25-10 wt per cent Zn<SP>++</SP>, at least 0.25%benzotriazole and 0.4-1%H 2 SO 4 . The Zn++ source may be ZnSO 4 , and the composition may contain diethylenetrianine pentaacetic acid to raise its pH to 8 or more, or an acid such as acetic, or Na 2 SiO 3 , to give pH 5-8. An organic solvent such as isopropanol or ethylene glycol may be used to increase benzotriazole solubility, and where appropriate, chelants, lignosulphonates, polyphosphonates and/or polymers may be added to the composition, which is metered into the water system as an aqueous solution; protection of Cu and steel is referred to.
Patent GB-1399417-A (GB)
Title: Pre-paint coating compositions
IPC: C23C22/32
Filed: 1973-10-17
Abstract: 1399417 Pre-paint coating constituent DIAMOND SHAMROCK CORP 17 Oct 1973 [18 Oet 1972] 48401/73 Heading C4A A precursor constituent for a pre-paint coating composition containing pulverulent zinc used to support corrosion resistance to metal substrates, comprises an aqueous medium, chromic acid, a compatible pH adjustment agent and xanthan gum hydrophilic colloid, the chromic acid being present in an amount sufficient to provide a pH in water of below 3 and the pH adjustment agent being present in amount sufficient to give the precursor constituent a pH of 3 to 6. The pH adjustment agent may be an oxide or hydroxide of a metal other than Na, K, Rb or Cs which is soluble in the aqueous chromic acid solution. A reducing agent for the hexavalent chromium provided by the chromic acid may be present, e.g. a dicarboxylic acid also containing succinimide, acrylamide or aspartic acid. Tertiary alcohols and/or chlorinated hydrocarbons may be added to the aqueous medium.
Patent GB-1244835-A (GB)
Title: Improvements relating to variable speed hydraulic motors
Inventor: IFE GEORGE
IPC: F03C1/04
Filed: 1967-10-25
Abstract: 1,244,835. Hydraulic reciprocating motors. ENGLISH ELECTRIC CO. Ltd. Oct.22, 1968 [Oct.25, 1967], No.48494/67. Heading F1A. In a variable speed hydraulic motor comprising a rotary cylinder block 2, in which axially movable pistons 26 are reciprocated in cylinders 28 by the action of a stationary swash-plate 32, each of the cylinders 28 communicates with a radial cylinder in which a radial piston 56 is reciprocated by an eccentric, and the displacement of the motor is varied by altering either the degree of eccentricity, or the inclination of the swash-plate. Each radial piston 56 is pivoted on a slipper 60, formed by ring parts 64, 66, the slipper being adjacent a rotating inner race (68) Fig.2 (not shown), which is separated from a stationary outer race (70) by rollers (72). The outer race is housed in a cam member (74) which is octagonal shaped externally, and which acts as a guide to ensure that the races move in only one direction. At maximum speed the cam member is set at zero eccentricity by locating spindles 78, so that the motor displacement is provided solely by the axial pistons; to reduce the displacement the member is moved so that each radial piston moves radially outward as its corresponding axial piston moves axially outward. The cam member 74 may be adjusted by hydraulic means, such as hydraulic pistons (80), and the circuit controlling these pistons may include means for over-riding the control signal if the motor fails to start at a high speed setting. The bearing surfaces of the slippers 60 may be arranged as hydrostatic bearings, in which case the slippers may bear directly on the inner surface of the cam member 74. Hydraulic fluid is introduced into and discharged from the cylinders 28 via inlet and outlet ports 44, channels 46, a stationary valve plate 42, and arcuate ports 52 and 54 in the valve plate.
Patent GB-1362417-A (GB)
Title: Reciprocating fluid motor
IPC: F01L21/04
Filed: 1971-10-21
Abstract: 1362417 Reciprocating fluid motors; pumps SOC ANON D B A 21 Oct 1971 [2 Nov 1970] 48917/71 Headings F1A, F1M and F1S High pressure HP is delivered to the chamber 52 on the right of the diaphragm 48 through the passages 80 and 82. From the chamber 52 the high pressure is established in the right hand enclosure 22 through a passage 76 and ports 78. Low pressure BP communicates with the left enclosure 20 through the orifice 72 which opens into the chamber 50 and through passages 74 and 84. The pressure acting upon the movable plate 18 urges the assembly comprising the plate 18 the piston 26 and the distributor 34 to the left and the rod 58 slides in the aperture 60 of the casing 32 so that the cup 66 departs from engagement with the casing. As the movable plate approaches the end of the left stroke the cup 68 engages the casing 32 and slight subsequent movement of the plate towards the left overcomes the pressure on the diaphragm 48 and disengages the valves 54, 56 from their left seatings. The result is a reversal of pressure conditions on either side of the diaphragm 48 and on either side of the plate 18. The drive fluid may be constituted by air, the low pressure BP being connected to the intake manifold of an engine and the high pressure HP being in communication with atmosphere. The distributor 34 can be of plastic material. The motor drives a pump comprising a piston 26 and inlet and outlet valves 28, 30.
Patent GB-1319336-A (GB)
Title: Cassette changer with a pause mode
IPC: G11B15/68
Filed: 1970-10-15
Abstract: 1319336 Cassette changers AMPEX CORP 15 Oct 1970 [10 Nov 1969] 48983/70 Heading G5R The Specification repeats the description in Specifications 1,319,340 and 1,319,339 relating to the provision of a pause facility in a cassette changer whereby operation of a manual control retracts a record/playback head and a forward and reverse pinch rollers to a pause position which is also the rest position of the apparatus.
Patent GB-1466604-A (GB)
Title: Overhead monorails
IPC: E01B25/24
Filed: 1974-11-13
Abstract: 1466604 Elevated railways D K SUKHANOV S I BLINOV L L BOGOLJUBOV S A KASCHEEN V B MATVEEN L T TRIFONOV and N L SHISHKINA 13 Nov 1974 49065/74 Heading B7L A monorail comprising a top plate 2 and side walls 9 shaped to provide runways 5a, 5b, is characterized in that the side walls have spaced openings 10 to reduce the amount of material used in the construction of the monorail and provide access to internal bus-bars 4. The openings may be provided with removable covers 11. Alternatively, the top plate 2 and runways 5a, 5b are formed from separate members interconnected by spaced brackets of inverted U-shape.
Patent GB-1018008-A (GB)
Title: Clip for securing cables,rods or the like to an apertured support
Inventor: PARKIN LESLIE
IPC: F16L3/23
Filed: 1962-12-31
Abstract: 1,018,008. Releasable fastenings. CANN FASTENER CO. Ltd. Sept. 26, 1963 [Dec. 31, 1962], No. 49166/62. Heading E2B. [Also in Division H2] A clip for detachably securing cables or rods a to a support b<SP>1</SP> with apertures c<SP>1</SP> comprises a base 10 and legs 12, 13 adapted to snap resiliently into the apertures c<SP>1</SP>. Each leg includes two side parts 15 with outwardly directed shoulders 15a and a resilient tongue 16 with inwardly directed shoulder 17. The base 10 has inclined flanges 7a, 8a, whose free ends abut the upper surface of the support b<SP>1</SP> when the clip is assembled therewith with the shoulders 15a, 17 engaging opposite edges of the apertures c<SP>1</SP>.
Patent GB-1118336-A (GB)
Title: Improvements in ferrules for insertion into pipes
Inventor: SYSON GEOFFREY
IPC: F16L41/10
Filed: 1966-11-03
Abstract: 1,118,336. Connecting branch pipes. STANTON & STAVELEY Ltd. 3 Nov., 1966, No. 49382/66. Heading F2G. A ferrule for connection to a pipe, particularly a thin wall pipe 12, comprises a stem 1 having a first threaded portion 2 engageable with the wall of the pipe, a second threaded portion 3 engagable with a locking nut, an unthreaded bearing surface 4 between the threaded portions and inclined to the axis of the stem and a compression ring 9 surrounding the bearing surface and serving under the action of the locking nut to urge a deformable gasket 8 into sealing relationship with the bearing surface and the pipe, the face of the ring engaging said gasket being curved to match the pipe contour and provide a substantially uniform pressure over the whole of the gasket. The bearing surface is preferably conical and inclined at 60 degrees to the axis of the stem.
Patent GB-1133346-A (GB)
Title: Phosphor composition and device
IPC: C09K11/82
Filed: 1965-11-22
Abstract: 1,133,346. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS Inc. 22 Nov., 1965 [23 Nov., 1964], No. 49541/65. Heading C4S. A red-emitting phosphor comprises yttrium vanadate activated by a rare earth metal, e.g. europium, particularly in amount 0À001- 0-1 moles per mole of vanadate ion, and a small quantity (e.g. 1 x 10<SP>-5</SP> to 5 x 10<SP>-3</SP> gram atoms per mole of vanadate ion) of calcium and/or manganese. The Ca<SP>++</SP> shifts Eu<SP>++</SP>, which is not an efficient activator, to Eu<SP>+++</SP>. Ca<SP>++</SP>, which readily replaces Y+ + + of similar size, also reduces the poisoning effect of Ce<SP>4+</SP> present as an impurity. Similarly, manganese acts as a charge compensator and added as a manganic ion or permanganate oxidizes the europium to its higher valency state. The phosphor may be prepared by heating in air for two hours at 950‹ C., cooling, digesting in strong sodium hydroxide solution, washing and drying. The phosphor may be used in a H.P.M.U. lamp or a three-colour television tube. When deposited by a dry powder method, the phosphor particles are preferably 2 to 20 micron diameter, when deposited as a slurry, 0À5 to 7À0 microns.
Patent GB-1478526-A (GB)
Title: Separation devices
IPC: B01D17/028
Filed: 1974-11-15
Abstract: 1478526 Settling apparatus PIELKENROOD-VINITEX BV 15 Nov 1974 [22 Dec 1973] 49593/74 Heading B1D A settling apparatus comprises a parallel plate separator 8 in a settling basin 1, in which liquid enters through supply tube 12 (slotted or perforated) flows (e.g. upwardly) between vertical parallel plates in triangular crosssectioned space 13 and reverses direction to enter inclined superposed parallel plate separator 8 then into chamber 4 and is discharged from there. Sedimented matter collects in a lower portion 10 and floating matter is discharged over weir 5 into discharge duct 6. The plates in space 13 may be corrugated and "out of phase" and parallel to the direction of flow as in Fig. 2 not shown, or may be such as to cause a serpentine like flow under and over parallel plates in channels of widening cross section (Figs. 3 and 4 not shown). Agglomeration of particles is caused by the varying flow gradient. Air bubbles or additives may be introduced adjacent the supply tube.
Patent GB-1284289-A (GB)
Title: Medical instrument
Inventor: GREEN DAVID THOMAS
IPC: A61B17/128
Filed: 1969-10-09
Abstract: 1284289 Surgical stapling device UNITED STATES SURGICAL CORP 9 Oct 1969 [10 Oct 1968] 49698/69 Heading A5R [Also in Division B4] A surgical stapling device which may be attached to a clamping tool 12, e.g. a hemostat, comprises a staple housing 52, a threaded screw 46 located in the housing 52 and forming a staple carrier, the staples being located in a groove in the screw, a cylindrical cam 48 fixed to the screw 46 and guided in a bore 62 in a movable block 60 which provides a cam guide in which the cam can be caused to simultaneously advance and rotate by moving the block, a staple hammer 58 pivotally attached to the housing 52, means 70 to cause the hammer to rotate about a pivot 36, and a bracket 10 to support the device on the clamping tool 12, Figure 1 (not shown). The bracket is slidable on the tool to move the staple carrier and hammer towards or away from the clamping tool jaws. To place a staple, the bracket 10 is first moved forward and then block 60 is moved forward causing cam 48 to rotate once. Staples, located on the threads of screw 46, move forward and one is positioned at a slot (54) in housing 52. Further movement of block 60 causes a wedge 70 to rotate hammer 58 about pivot 36 and thus eject a staple. An anvil (78) is provided on bracket 10 to bend the staples. Block 60 is then withdrawn for the next operation.
Patent GB-1235550-A (GB)
Title: Conveyor drive means
IPC: B66B23/02
Filed: 1968-10-22
Abstract: 1,235,550. Endless chain conveyers; passenger conveyers. STEARNS MFG. CO. Inc. 22 Oct., 1968 [30 Oct., 1967], No. 50072/68. Heading B8A. A passenger conveyer comprises interlinked pallets 20 rolling on rollers 62, 64 and driven by dogs 102, 104, which are carried by an endless drive chain 84, and which engage followers 32 depending from the pallets, guides 74 and 76 engaging the followers 32 to guide the pallets along runs of the conveyer upstream and downstream of the drive chain 84. Each pallet 20 has a portion with spaced members 40 42 between which is received the opposite end 40a of the adjacent pallet. The adjacent pallets are linked by a pivot 30 extending upwardly from each follower 32 so as to engage bores formed in the members 40, 40a and 42. The dogs 102, 104 are carried between drive chains 82, 84, by means of bolts 106 which also carry guide rollers 108. The operative surface of each dog is radiused at 116, 118.