baber/WOPTO huggingface dataset:
Patent GB-1156884-A (GB)
Title: Improvements in and relating to Rollers
IPC: F16C13/00
Filed: 1967-05-03
Abstract: 1,156,884. Bearings. REX CHAINBELT Inc. 3 May, 1967 [13 June, 1966], No. 20465/67. Heading F2A. An assembly comprises a shaft 20 extending through a bearing chamber 58 sealed at one end, a tube member 60 at the other end of the bearing chamber surrounding the shaft with a clearance and being axially movable on the shaft so that a flange 66 on the tube may engage a ring 62. Ring 62 is secured between the bearing and lip 28 of end plate 24 of roller 22, to rotate with the roller. Flange 72 of ring 62 is positioned between flange 66 and projections 68 on tube member 60. When grease is supplied under pressure through fitting 48, bore 50 and passages 52 in the shaft to bearing chambers 58, flange 66 is forced into engagement with flange 72 of ring 62, and tube member 60 rotates with ring 62. This relative rotation of tube member 60 and shaft 20 allows leakage of grease between them. After reduction of pressure in the bearing chamber, tube 64 rotates with the shaft and flange 66 either slides against flange 72, or moves axially out of engagement with flange 72, depending on the inclination of shaft 22. Flanges 66 and 72 are part-spherical.
Patent GB-148507-A (GB)
Title: Improvements in carburetters
IPC: F02M3/10
Filed: 1920-07-10
Abstract: 148,507. Bocchi, J. F. M. Oct. 27, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Spray carburettors.-The fuel nozzle, of a carburettor consists of inner and outer tubes l, j, the inner tube communicating with the annular float chamber through the orifice o and with the outer tube through a number of spirally arranged orifices m<1> - - m<5>. The outer tube has a spraying orifice at k<1> and an air inlet at k, the air mixing with the fuel before it is sprayed. The tubes l, j are carried by a pipe p and are removable therewith from the body of the carburettor, the pipe being held in by a spring-pressed catch x on a pivoted frame w. The pipe p has fuel orifices t for use at starting to form mixture in the by-pass u, when the throttle b is closed.
Patent GB-1335432-A (GB)
Title: Electronic exposure determining circuit and an electric shutter control system incorporating the exposure determining circuit
IPC: G03B7/083
Filed: 1971-04-19
Abstract: 1335432 Photo-electric control of shutter time CANON KK 19 April 1971 [23 Jan 1970 19 March 1970 21 May 1970] 20482/71 Heading G2A An electric shutter control circuit has a first and a second direct-coupled transistor amplifier each containing a negative feed-back connection F p , F v  for giving the amplifiers logarithmic compression characteristics, the first amplifier containing a photo-electric element P to receive light from an object and the second amplifier containing a variable element V 1 , V 2  to introduce photographing information, and a differential amplifier T 9 , T 10  for both outputs of the first and second direct coupled amplifiers. The outputs of the differential amplifier are fed to a storage capacitor C M  via switch contacts a 1  a 2  of a changeover switch S M . During camera operation, the changeover switch S M  is operated and the voltage stored on capacitor C M  is fed to a timing circuit which includes a capacitor C T . An ammeter I indicates the shutter speed. The timing circuit includes resistors RM 1 , RM 2 , RM 3  to provide manual setting of the exposure time. In modifications, a change-over switch (S c ) Fig. 3 (not shown) enables the battery voltage to be checked, and transistors replace the diodes to improve temperature compensation, Fig.4 (not shown). The circuit may be formed as an integrated circuit and details of the physical form of this and its mounting in a camera are given.
Patent GB-276820-A (GB)
Title: Improvements in filtering machines
IPC: B01D29/00
Filed: 1926-08-19
Abstract: 276,820. Smith, E. L., (Chatfield, W. T.). Aug. 19, 1926.. Leaf filters.-A container 1 is moved by rack and pinion gear 16, 15 on rails 3 to and from a fixed head 5 supporting filter elements 8 and to which the container may be bolted. Material is supplied to the container through a valve 7 and filtrate is discharged to troughs 9 through the ends 8<a> of tubes which form the frames of the filter elements. A frame 4 held between the edge of the container and the head 5, when the container is closed, carries flat strips or wires 11. When the container is moved away from the head, the flange of the container engages the heads 4<b> of rods 4<a> connected to the frame 4, so that the latter is drawn forward and the strips or wires 11 cut the calces from the filter elements. The cutters 11 may be mounted in the frame so as to be capable of slight movement relative to the frame, thus allowing for slight displacement or bending of the filter frames.
Patent GB-220800-A (GB)
Title: Improvements in bonding clips for electric wiring systems
IPC: H01R4/64
Filed: 1923-08-13
Abstract: 220,800. Callender's Cable & Construction Co., Ltd., and Bryce, S. J. Aug. 13, 1923. Clips, band. - In a clip of the type in which a bridge-piece 8 is forced away from a pipe 3 by a screw 9 so as to Jock a wire 4 between the bridge piece and loops in a metal strip 1, which is passed around the pipe and through slots in the bridge piece, the screw has a flat disc tail 10 and a notched head 11 and a lock nut 12 is provided near the head of the screw.
Patent GB-320636-A (GB)
Title: Improvements relating to sound reproducing apparatus
IPC: H04R9/04
Filed: 1928-07-16
Abstract: 320,636. Fenton, J. July 16, 1928. Magnetic instruments.-The coil A, Fig. 4, of a moving-coil loud-speaker is centred in the magnetic air-gap F, Fig. 3, by means of sleeves mounted on eccentric bosses. Thus the ring G of the diaphragm-supporting framework H, which is concentric with the coil A, is rotatably mounted on a boss D', Fig. 2, formed on a sleeve D<3>. This boss D<1> is eccentric to the aperture D<2> which in turn is rotatably mounted on a boss E<2>, Fig. 3, forming part of the outer pole-piece and eccentric to the air-gap F in which the coil moves. Rotation of the sleeve D<3> and the framework H, enables the coil to be accurately centred in the air-gap, and a retaining ring K, Fig. 5, clamped by screws L, secures, the moving parts.
Patent GB-1435322-A (GB)
Title: Process for preparing 2- 6-methoxy-2-naphthyl- propionic acid and intermediate therefor
IPC: B01J27/00
Filed: 1973-05-01
Abstract: 1435322 Naphthalene derivatives SYNTEX CORP 1 May 1973 [11 May 1972] 20655/73 Heading C2C The novel compounds, 6-methoxy-2-(1-chloro- 1-propenyl)-naphthalene (A) and 6-methoxy-2- (1-propynyl)-naphthalene (B), are prepared by reacting 6 - methoxy - 2 - propionyl - naphthalene with a chlorinating agent in an inert ether, benzene or toluene to give compound (A) and reacting this with a dehydrochlorination agent to give compound (B). 2 - (6 - Methoxy - 2 - naphthyl) - propionic acid is prepared by treating compound (B) with a thallic salt in the presence of a C 1-4  alkanol to give a C 1-4  alkyl ester of 2-(6-methoxy-2-naphthyl)- propionic acid and hydrolysing this ester to give the desired acid.
Patent GB-216743-A (GB)
Title: Electrically illuminated sign
IPC: G09F19/18
Filed: 1923-08-14
Abstract: 216,743. Lines, S. R., and British Oil & Cake Mills, Ltd. Aug. 14, 1923. Illumination, changing advertisements by controlling; optical apparatus, applications of.-An illuminated sign comprises a casing 1 fronted by a light-projecting device 2 consisting of a sheet of irregular lens-shaped or prismatic elements or both combined, e.g. moulded sheet glass ornamented by scroll, arabesque, floral or other more regular geometric design, or glass similar to a leaded window composed of roundels. A frame 4 adjustably fitted to the front of the casing 1 carries a screen 3 of frosted glass &c. Within the' casing 1 is mounted a disc 5 capable of a swash-plate or wobbling disc motion and carrying differently coloured electric lamps 6, each of which may have a reflector. The carrier 5 is pivoted on its horizontal diameter in bearings 8 suspended at one end by links or chains 10 and supported at the other by links 11. A roller 20 on a finger 19 fixed to the carrier 5 is confined in a groove 21 to prevent rotation of the carrier. To the back of the carrier are attached tripod arms 12, 12a, 12b converging to a ball-and-socket connection with an adjustable crank pin 14 on a pulley 15 driven by a motor 16. Rotation of the pulley 15 imparts to the carrier 5 a motion which brings the lamps 6, other than those near the centre, into and out of the foci of the adjacent lenses &c. on the device 2, and thus produces on the screen 3 changing shades of colour and a moving cloud or soap-bubble effect, together with a globular appearance of the flat screen 3. Alternative methods of imparting the wobbling motion to the carrier 5 are (1) mounting the carrier 5 in a gimbal frame, motion being given to the carrier and to the frame by two connecting-rods operated by cranks arranged at right angles on a rotating shaft; (2) mounting the carrier 5 axially on a universal bearing and rotating two cams against rollers arranged on radii 90‹ apart on the back of the carrier, the rollers being held against the cams by a spring or by other cams; (3) mounting the carriers 5 axially on a universal bearing and rotating a disc carrying at different distances from its face adjustable castors running on a ring on the back of the carrier; (4) mounting the carrier 5 axially on a universal bearing and extending its shaft rearwardly into a ball-and-socket joint arranged eccentrically on a rotating gear wheel. A rotating switch mounted preferably on the back of the carrier 5 is driven by the motor 16 through a flexible shaft 26, and serves to light up the lamps 6 intermittently in groups and individually for varying periods. A transformer 27 may be mounted on the struts 12<a>, 12<b>. The carrier 5 may have a conical, spherical, or flat face, which may be highly polished. The movements imparted to the carrier 5 may be given to the device 2 and the carrier remain stationary.
Patent GB-1328449-A (GB)
Title: Indexing of plane shapes or profiles
IPC: G01B5/20
Filed: 1971-04-19
Abstract: 1328449 Measuring and indexing profiles PROFILE IDENTIFICATION (PROP.) Ltd 19 April 1971 [29 Jan 19701 20687/71 Heading G1X A method of indexing a plane shape or profile comprises the steps of (a) establishing a major axis 1-0-5 passing through the two furthest apart points on the outline or the shape or profile, and establishing a minor axis 3-0-7 at a predetermined angle thereto (e.g. at 90 degrees) passing through that point on the outline which is furthest from the major axis, thereby defining an origin O at the intersection of the axes, and (b) measuring the lengths of the radius vectors along the arms of axes 1-0-5, 2-0-6, 3-0-7 and 4-0-8 from the origin O to the outline at predetermined angular spacings (preferably intervals of 45 degrees). For complicated figures two origins may be defined. The coordinates obtained may be compared with, for example, the coordinates of dies in order to facilitate the selection from stock of a suitable die for the manufacture of an object of the required profile. A transparent template in the form of a disc 20, as in Fig. 6, with angularly spaced and linearly divided axes may be used to plot and measure the radius vectors.
Patent GB-1219719-A (GB)
Title: Improvements in or relating to transfer elements
IPC: B41M5/10
Filed: 1969-04-23
Abstract: 1,219,719. Polymer-containing coating compositions. COLUMBIA RIBBON & CARBON MFG. CO. Inc. 23 April, 1969 [20 June, 1968], No. 20701/69. Headings C3P and C3T. [Also in Division D2] An ink-containing layer for a pressuresensitive transfer element (see Division D2) is made by applying a composition comprising styrene-methyl methacrylate copolymer, butyl stearate, refined rapeseed oil, sulphonated vegetable oil, blue toning paste, black pigment, ethyl acetate, methyl ethyl ketone and toluol to a support, and evaporating the solvents. A porous layer containing oil in the pores may be applied by coating with a composition comprising polymethyl methacrylate, butyl stearate, methyl ethyl ketone, and optionally silicone oil and lecithin, and evaporating the solvent.
Patent GB-597281-A (GB)
Title: Apparatus for slitting the end of rotating work-piece and for analogous machine operations
IPC: B23Q5/04
Filed: 1945-08-13
Abstract: 597,281. Attachments for drilling and milling. SPIBY, K. Aug. 13, 1945, No. 20716. [Class 83 (iii)] An attachment for securing to the tailstock or turret of a lathe and driven by engagement with the chuck of the lathe so that a rotating work-piece held in the chuck can have flats or slots milled on it or can be drilled with holes displaced from the axis of rotation comprises a stationary support, a member rotatably mounted but axially fixed on the support and carrying a rotatable tool spindle and gearing between the stationary support and the tool carrying member so that when the latter is rotated the tool spindle is also rotated. For milling, a stationary support 1, Fig. 1, attached to a turret or tailstock, carries a rotatable member consisting of inner and outer sleeves 3, 4 and carrying in bearings 7 and 14 a tool spindle 6 arranged at right angles to the axis of rotation of the sleeves. The tool spindle is rotated about its own axis by the engagement of a bevel pinion 9 keyed to the spindle through an adaptor 8 with bevel teeth formed on a member 15 attached to the stationary support. A nut on the spindle, accessible on removal of a screw cap 10, enables one or more cutters 5 to be clamped between distance sleeves 12 bearing on the adaptor 8 and a flange 11 on the spindle. The tool-carrying member is rotated on the support by the sliding engagement of a peg 16 with a projection 18, Fig. 2, on a plate 17 on the rotating chuck. Two projections 18 spaced at 90 degrees may be provided so that after milling one flat, or two flats using two axially-spaced cutters, on a work-piece, the tool-carrying member may be indexed to milla flat or flats at right angles to the first fiats ; three projections spaced at 120 degrees may be provided to allow milling of a hexagon head. Pairs of spaced projections for co-operation with two pegs 16 may be provided. For drilling, the stationary support 1 carries a rotatable sleeve 19, Fig. 3, with bearings for drill spindles 20 fitted with pinions 21 which engage a fixed gear-wheel 22. The sleeve is rotated by engagement of pins 23 with a chuck member 24 which can slide on the pins against the pressure of springs 25 and carries guides 27 for the drills 28 to operate on a work-piece 26.
Patent GB-677202-A (GB)
Title: Improvements in objectives of modified gaussian type
IPC: G02B13/00
Filed: 1950-08-22
Abstract: 677,202. Optical objectives. VOIGTLANDER & SOHN AKT.-GES. Aug. 22, 1950 [Jan. 27, 1950], No. 20758/50. Class 97 (i). A wide-angle modified Gaussian objective comprises a combination of two components on each side of a stop, each combination comprising, from front to rear, a simple uncemented single meniscus lens followed by a compound component of opposite sign, the two single meniscus lenses being of opposite sign, and the compound component of the front combination being meniscus, the arithmetic mean of the refractive indices for the yellow He line of the two single lenses being greater than 1.65 and the last component of the objective having a collective cemented surface convex to the front, the difference in refractive index for He yellow on the two sides of this cemented surface being greater than 0.03. The said cemented surface may have a radius of curvature less than <SP>2</SP>/ 3  the equivalent focal length of the objective and such that the ratios of this radius with those of the outer surfaces of the objective lie between <SP>2</SP>/ 3  and <SP>3</SP>/ 2'  Numerical data are given for one example of the lens shown in which the surfaces R4, R<SP>4</SP>1 in the second component are cemented. They may, however, be slightly separated.
Patent GB-699987-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K17/16
Filed: 1951-09-04
Abstract: 699,987. Cores for dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 4, 1951 [Sept. 20, 1950], No. 20861/51. Class 35. The laminae of which a squirrel-cage rotor is built up have both open and closed slots to produce silent running. The rotor is built up of only one sort of lamina 10, Fig. 2, having both open and closed slots 12, 13 which are preferably uniformly staggered in the assembled rotor as shown in Fig. 3. The squirrel cage conductors may be cast in position and it is stated that 50 to 85 per cent of the slots should be open.
Patent GB-995111-A (GB)
Title: Production of pottery articles
Inventor: BAMFORD WILLIAM GEORGE
IPC: B28B1/02
Filed: 1963-05-24
Abstract: Apparatus for forming clay into shapes suitable for conversion to tea-pot lids &c., comprises a jigger head adapted to be mounted on a vertical spindle, said head having a larger diameter at its upper portion than its lower portion 2 and means 4 for permitting a ring 6 to be removably locked within said upper portion to provide a space in the form of a truncated cone with its narrower end upwards. <PICT:0995111/C1/1>
Patent GB-260376-A (GB)
Title: Improvements in or relating to radiators or condensers for internal-combustion and steam engines
IPC: F28D1/02
Filed: 1925-08-20
Abstract: 260,376. Cave, T. R. Cave-Browne-. Aug. 20, 1925. Surface condensers. - A steamcondensing system for internal-combustion engines for aircraft &c., applicable to locomotives &c., comprises a tubular radiator of sectoral form having a perforated steam and water distributing-pipe 7 communicating with the water-jacket of the engine, and condensate and air pipes 10, 27 respectively connected to the air-pump 25. The air-pump discharges the condensate to the reserve water tank 23, which communicates through the pipe 10<11> with the engine, and together with the injector 28 maintains a partial vacuum in the apex of the radiator. The tubes of the radiator may be cooled by air or other medium. According to modifications, in which the air-pipe is not required, the radiator is provided with a vent at its apex which is controlled by a spring-pressed piston 11, Fig. 5, having ports 12 which communicate through ports 15 with the atmosphere. In one of these latter modifications, the lower compartment 4 of the radiator forms the reserve water tank and is connected directly to the engine, while, in the other modification, the lower compartment communicates directly with a reserve water tank, and indirectly through a steam separator with the engine.
Patent GB-742095-A (GB)
Title: Improvements in and relating to magnetic amplifiers
IPC: H03F9/04
Filed: 1953-07-28
Abstract: 742,095. Magnetic amplifiers. GENERAL ELECTRIC CO. July 28, 1953 [July 29, 1952], No. 20910/53. Class 40 (4). In a transduotor in which self-excitation is effected by half-wave rectification of the current through each load winding, the application of a biasing current through a resistor connected in series with the load windings neutralizes induced currents due to transient control signals and thus overcomes the inherent slow response in one direction, the bias current acting in the same sense as the load winding currents. The basic arrangement is shown in Fig. 1 in which a transductor 14 having control and load windings 15, 16 is self-excited by a rectifier 17. The A.C. supply is derived from a transformer 21 having an adjustably-tapped secondary winding 20, the output of winding portion 24 supplying the bias current to a resistor 18 in the load circuit over a rectifier 25. Since the induced current in the load circuit arising from transient control signals is effective only in the conductive direction of rectifier 17, it is neutralized by the unidirectional bias current through the resistor. The half-wave rectified bias current is also arranged so that it acts only during the half-cycles in which the load current is suppressed, and does not therefore influence the load current. In the case of a transductor having two parallelconnected load windings 16, 31, Fig. 2, with auto-excitation provided by oppositely-directed rectifiers 17, 34, transient control signals cause an induced current to circulate through the two windings. The induced current is neutralized in the arrangement shown by half-wave bias currents applied alternately to resistors 18 and 35 over rectifiers 25, 36. A centre-tapped saturable reactor may be connected between rectifiers 25, 36 and their common connection to one end of winding 24, Fig. 3 (not shown), to maintain the bias at a substantially constant magnitude. Changes in voltage drop across resistors 18 and 35 when the load current varies may be minimized by the use of non-linear resistors such as neon lamps or thyrite resistors. Instead of a separate biasing voltage, an autoexcited transductor may be provided with automatic bias, Fig. 4, comprising non-linear resistors 181, 35<1> each shunted by a capacitor 43, 44. The arrangement shown in Fig. 2 may be applied to auto-excited transductors which supply a D.C. load current, Fig. 5 (not shown). In a modification of Figs. 2 and 5, the resistors 18 and 35 are omitted and a single resistor 53, Fig. 6, supplied with full-wave rectified bias is connected in series with the D.C. load. In this case a separate transformer winding 55 is used. The arrangements shown in Figs. 2 and 6 may be applied to push-pull circuits, Figs. 7 and 8 (not shown).
Patent GB-614463-A (GB)
Title: Self-bailing tools for cable tool drills
IPC: E21B1/00
Filed: 1946-07-12
Abstract: 614,463. Check valves. KENDRICK, J. F. July 12, 1946, No. 20927. [Class 135] [Also in Group XXI] A non-return valve 3 is moulded from an elastic material in the form of a hemispherical hollow dome with a threaded cylindrical skirt. The dome is separated into segments E which part when subjected to internal pressure and close, because of the elastic deformation, when the pressure is released.
Patent GB-780199-A (GB)
Title: Improvements in hinges for cardboard or like boxes
Inventor: CHIDGEY ALFRED LEONARD
IPC: B65D5/66
Filed: 1954-07-19
Abstract: 780,199. Hinges and pivots. ROBINSON, Ltd.. E. S. & A. July 19. 1955 [July 19. 1954]. No. 21005/54. Class 65(2) [Also in Group XVII] A cardboard or like box having a hinged lid has an inside hinge formed from a strip of paper or the like secured to either the box part or the lid part and slidable with respect to the other part so that the friction between the strip and the part with which it is slidable is sufficient to hold the lid open in a desired position. In an embodiment the strip 6 is secured by adhesive 7 to the lid 5 and is slidable between a side and the bottom of the box 1 and a liner 8.
Patent GB-452816-A (GB)
Title: Improvements in and relating to electrically heated central heating installations
IPC: H04M17/02
Filed: 1935-07-25
Abstract: 452,816. Automatic control systems. SAUER, W. VON, 12, Saarland Strasse, Berlin. July 25, 1935, No. 21193. Convention date, July 25, 1934. [Class 38 (iv)] [See also Group XI] Temperature.-A central heating hot water circulation system comprises an electric flow heater 4 connected in parallel with an electrically heated hot water accumulator 7. Thermostats 10 and 11 are provided in the heaters 4 and 7 which operate through a Wheatstone bridge system 17, a relay 24 controlling the heaters 9a, 9b, and 9c of the accumulator. Any desired difference of temperature between the heater 4 and accumulator 7 may thus be maintained. A valve 8 in the inlet of the accumulator closes, preferably automatically whenever the accumulator heaters are absorbing current. Thermostats 18a, 18b, 18c and 18d, connected in series, are provided in the rooms heated by the system so that when the temperatures in the rooms are all above a certain level a switch 20 is operated to cut off the heating current. These thermostats control separate circuits in which are electromagnetically controlled valves for the hot water radiators. Thermostats 15, 36a, 36b and 36c serve to switch on the groups 5a, 5b and 5c of the heating elements progressively as the temperature falls. These thermostats may be arranged in parts of the system other than the heater 4.