baber/WOPTO huggingface dataset:
Patent GB-507324-A (GB)
Title: Convertible seats
IPC: A47C17/34
Filed: 1936-06-16
Abstract: 507,324. Convertible seats. KNIGHT, E. W., and PRATT, S. E. June 16, 1938, No. 34036/37. [Class 52 (ii)] In a convertible seat of arm-chair type of the kind in which one or both arms are arranged to be lowered to the level of the seat, the arms are lowered so that the normal upper surface thereof remains uppermost, preferably with a parallel movement in a vertical plane, into a cavity formed in the side of the chair, and against the action of vertical springs. The lower part c<1> of the arm slides in a cavity at the side of the chair, tubes c<2> in the arms sliding in tubes f within the cavity. Springs g housed in the tubes tend.to raise the arms. Locking means are provided comprising spring urged rods i pivoted to a disc k and entering holes in the fixed tubes f. The disc k is mounted on a hollow spindle having a squared aperture in the end to receive a key by means of which the rods i are withdrawn from the holes in the tubes f. Apertures n<1> in the side of the chair permit the entry of the key. A number of such chairs placed together with the inner arms depressed form a continuous seat or settee.
Patent GB-192253-A (GB)
Title: Improvements in draw presses for sheet metal
IPC: B21D24/12
Filed: 1921-12-17
Abstract: 192,253. Rhodes, C. J., and Berry, G. W. Cupping.-A sheet metal drawing-press has the lower die connected to a pressure-ring which, in turn, is connected to a rubber &c. buffer in such a manner that a constant predetermined pressure is exerted on the buffer throughout the drawing operation. The arrangement is such that the pressure exerted on the pressure-ring is also constant. The lower die e<13>, Fig. 1, is fitted with a pressure-ring e" which is connected to a quadrant d' pivoted to a fixed bracket f<1>. The quadrant is also linked to a rubber buffer e the compression of which can be regulated by nuts e<2>. The pivot of the links d, d<2> is carried by an adjustable linkage a, a<1> from the press-head b. In a modification, the pressure ring m<3>, Fig. 3, is connected directly to the buffer m<2>, the pressure being regulated by the adjustment of the connection k<3> carried by a bell crank lever k which is controlled by a cam j actuated through linkage from the press-head b.
Patent GB-727787-A (GB)
Title: Improvements in or relating to double-extension slides
IPC: A47B88/493
Filed: 1953-12-08
Abstract: 727,787. Drawer slides. METAL TRIM, Ltd., and PENKALA, E. Dec. 8, 1953. No. 34107/53. Class 52 (1). The intermediate slide 2 of a telescopic drawer runner provided with antifriction balls or rollers has balls &c. 7 mounted in its web which bear against the other two slides 1, 3 through an interposed resilient plate 8 which prevents lateral play. U-shaped stops 11, protruding from each side of the intermediate slide, may be provided, the limbs being slit to engage the web of the slide on insertion through a keyhole slot 2f, tails 11b on one of the limbs being bent to enter a second aperture 2h to retain the stops. A rear roller 6 on the intermediate slide runs on the lower track of the outer slide 3, a gap 3d or recess being provided at the track end whereby the closing movement of the drawer is automatically completed. Specification 667,249 is referred to.
Patent GB-1305447-A (GB)
IPC: H03K3/352
Filed: 1970-07-15
Abstract: 1305447 Semi-conductor memory cells INTERNATIONAL BUSINESS MACHINES CORP 15 July 1970 [30 July 1969] 34235/70 Heading H3T A negative resistance device such as an SCR 10 with an open circuit gate has a D.C. bias circuit 12 and is set to one or the other state by coincidence of co-ordinate signals Xi and Yj (or Yj<SP>1</SP>) which produce, by means of C22 for example, a transient signal which is superimposed on the D.C. bias. The resistance R B  of bias circuit 12 is arranged to hold SCR 10 in whichever state it has been set to, and positive signals at Xi and Yj or negative signals at Xi and Yj<SP>1</SP> set it to one state or the other. The signals are half-select-drive signals in the coordinate conductors of a matrix (Fig. 4, not shown) of S.C.R. memory cells. The resistance values R T , R B  are adjusted to ensure that a single half-select-drive signal is insufficient to cause switching. To read, a single positive halfselect-drive pulse is applied to Xi and no current at Yj<SP>1</SP> indicates a 1 while a measurable current at Yj<SP>1</SP> indicates a O.
Patent GB-783440-A (GB)
Title: Copy milling machine
Inventor: RUSSELL DENNIS
IPC: B23Q35/10
Filed: 1954-11-26
Abstract: 783,440. Copy-milling. RUSTON& HORNSBY, Ltd. Dec. 13, 1955 [Nov. 26, 1954], No. 34272/54. Class 83 (3). A milling-machine comprises an axiallymovable cutter 15 for working externally on a workpiece 17 and controlled by a follower 27 engaging a female cam 18. The cutter and follower are rotated on a fixed axis by a motor 12, which also rotates a crank device 25 connected to a table 20. The table, which carries the aerofoil blade-blank 17 and the cam 18 built up of laminations, slides at one end in a member 22 pivoted to the machine base, and at the other in a member 23 sliding on an arcuate guideway. As the crank rotates, the cam 18 is moved so that its surface is traversed by the follower, and the blade 17 is circled around the cutter 15. The crank incorporates springs which hold the cam against the follower. Adjusting means may distort the cam 18 to vary its profile.
Patent GB-1178510-A (GB)
Title: Speed Regulator for Hydrostatic Transmissions.
IPC: G05D13/00
Filed: 1968-07-18
Abstract: 1,178,510. Hydrostatic transmissions. GENERAL SIGNAL CORP. 18 July, 1968 [20 Oct., 1967], No. 34313/68. Headings F2C and F2D. In order to reduce the changes in output speed due to variations in load of a fixed displacement type hydrostatic transmission, the transmission is provided with a bleed conduit leading from the high pressure side of the transmission to a reservoir and containing a throttle valve which is is automatically adjusted to provide a relatively high rate of bleed under no load conditions and to progressively decrease the bleed flow as the load increases. A constant displacement pump 1 and motor 3 are interconnected by a supply line 5 and a return line 6, and a bleed line 9 leads from the line 5 to a throttle valve 14 and thence via a line 16 containing an adjustable restriction 01 to a reservoir 12 from which fluid is supplied to the return line 6 by a make-up pump 7 at a pressure determined by a relief valve 8. Leakage from the pump and motor to their casings is drained through a line 11 to the line 16 upstream of the restriction 01, and the pressure drop across this restriction caused by the combined bleed and drain flows is applied to a piston 18 to bias the throttle valve 14 against the force of a spring 17 to restrict the bleed flow. The pressure in the transmission supply line 5 is supplied through an adjustable restriction 02 to a chamber 19a to act on a piston 19 also biasing the throttle valve towards a closed position. Chamber 19a is connected to the reservoir through an adjustable restriction 03. In operation, under conditions of light loading, the leakage to the pump and motor casings and hence the drain flow through line 11 is small, and the pressure in line 5 and hence in chamber 19a is low so that the throttle valve assumes a leftwards position giving a relatively high bleed flow. As the load on the transmission increases the drain flow and the transmission pressure increase so that valve 14 is shifted rightwardly to restrict the bleed flow and maintain the output speed substantially constant.
Patent GB-194438-A (GB)
Title: Improvements in or relating to artificial lines for cable telegraphy
IPC: H04L5/14
Filed: 1921-12-21
Abstract: 194,438. Brown, S. G., and Telegraph Condenser Co., Ltd. Dec. 21, 1921. Inductances for artificial lines are made of low resistance and to produce as small an external field as possible. Preferably the coils are of copper wound on endless ring shaped formers of insulating material such as wood. The coils may have iron cores preferably with an air gap and may be enclosed in iron ring cases. Fig. 2 shows a of an iron core A with an air gap a extending in a slanting manner through a large part of the ring. The gap may extend right round in a spiral. Specification 21000/11 is referred to.
Patent GB-625452-A (GB)
Title: Improvements relating to cycle and like brakes
IPC: B62L1/08
Filed: 1946-11-21
Abstract: 625,452. Brake mechanism. BOWLES, R. Nov. 21, 1946, No. 34499. [Class 136 (i)] A cycle brake of the stirrup type has a rigid stem connected to the centre part of the brake yoke and slidable in a guide bracket secured to the fork crown, the bracket acts as an abutment for the casing of the Bowden wire operating mechanism, the cable being connected to the yoke other than coaxially with the stem. As shown in the Figure, the rigid stem C is screwed into a boss A connected to the centre of the brake yoke B and passes through a hole D in the guide bracket E connected to the fork crown. The bracket E acts as an abutment for the casing J of the Bowden wire operating mechanism. The casing has a screwed ferrule I engaging in a tapped hole K in the bracket E. The cable L of the Bowden wire mechanism is provided with a nipple M. The cable passes through a key hole P in a flat bracket N connected to the lower end of the stem C. The bracket also has a hole 0 for the threaded end of the stem.
Patent GB-1193266-A (GB)
Title: Locking Device for Metal Casement Windows
Inventor: FLANAGAN LESLIE MATTHEW GAY
IPC: E05C19/00
Filed: 1966-08-02
Abstract: 1,193,266. Turn-bolt fasteners. L. M. G. FLANAGAN. 1 Aug., 1967 [2 Aug., 1966], No. 34503/66. Heading E2A. A locking device for a pivoted window fastener comprises a member which is adapted to be bolted into the forked end of the fastener and a screw extending transversely of the member and adapted to be engaged with a projection on the window frame when the fastener is operative to fasten the window.
Patent GB-1219738-A (GB)
Title: A process for the separation of nitroethane from a mixture of nitroalkanes
IPC: C07C201/16
Filed: 1969-07-09
Abstract: 1,219,738. Separation of nitroethane from other nitroalkanes. COMMERCIAL SOLVENTS CORP. 9 July, 1969 [26 Aug., 1968], No. 34621/69. Heading C2C. Nitroethane is separated from a mixture with one or more other nitroalkanes, including nitromethane and 2-nitropropane by (a) mixing the nitroalkane mixture with a saturated aliphatic hydrocarbon having 7 or 8 carbon atoms; (b) distilling the mixture to form a distillate consisting of an upper layer and a lower layer comprising nitroethane, nitromethane and the hydrocarbon; (c) returning the upper layer to the distillation step; and (d) redistilling the lower layer until separation of the nitromethane and the hydrocarbon has been effected, thereby producing, as a distillation residue, purified nitroethane. The aliphatic hydrocarbon is preferably n-heptane, 2,2,4-trimethylpentane or 2,3,4-trimethylpentane.
Patent GB-615636-A (GB)
Title: Improvements in apparatus for examining materials by magnetic means
IPC: G01N27/80
Filed: 1945-12-20
Abstract: 615,636. Magnetic tests and measurements. DU MONT LABORATORIES, Inc., A. B. Dec. 20, 1945, No. 34629. Convention date, Jan. 24. [Class 37] [Also in Group XL (c)] In a device for testing ferromagnetic materials (for example steel), a specimen is subjected to an electrically produced pulsating magnetic field whereby it is magnetized slowly and demagnetized rapidly in successive cycles and the voltage pulse produced in a coil by the collapsing field in- .dicates the magnetic properties of the specimen, the magnetizing flux density being controlled at a fixed level for each test. In Fig. 1a, the gas-filled triode 1 produces a saw-tooth waveform W of low frequency which is amplified by triode 8 coupled to the balanced phase inverter 11, 12 and further amplified by the push-pull triodes 15, 16 and 19, 20, a saw-tooth current in the primary of transformer T exciting a magnetic flux of waveform W1 in the specimen 100 surrounded by coils 25 and 28. The waveform W2 derived from the phase-shifter constituted by the winding 23, condenser 26, and variable resistance 24, is amplified by triode 30, Fig. 1b, and the waveform W3 is clipped in pentode 32 to waveform W4, and applied to diode 34, cathode coupled to pentode 38 which produces the rectangular waveform W5, which charges condenser 43 through the double diode 40 as indicated by the waveform W6, until the grid potential of blocking oscillator 50 causes it to fire and discharge the condenser, when the process recommences. Waveform W6 is applied to the duo-diode triode 47, the output of which is taken from the cathode through the diode portion, the cathode and diode voltages being adjustable by resistances 481, 51, so that any desired step of the waveform W6 causes the triode section to conduct, raising the cathode potential, lowering the diode current through resistance 50 and increasing the grid voltage of triode 63, whose bias is adjusted by resistance 70 so that the tube is working just below cutoff at the final step of the waveform W6. A pulse of voltage induced in coil 28 by the variable magnetic flux in the specimen is amplified by triode 60 and a portion is applied to the grid of triode 63, causing it to conduct on the final step of waveform W6. Positive pulses 71 are displayed by an indicating device 87, spaced according to the frequency of blocking oscillator 56, and positioned at the middle of a horizontal portion of wave W6 by adjustment of the phase-shifter. Properties of the specimen (for example the carbon content of steel) may be determined by examination of the pulses, and the potentiometer 62 may be adjusted until a predetermined pulse pattern is obtained on the indicating device, which may be of the kind described in Specification 591,352, the potentiometer, being calibrated in terms of carbon content. The magnetizing flux density in specimens of varying permeability is kept uniform by degenerative feedback from the coil 28 to the cathode of triode 8 through a class " B " amplifier 72, a further amplifier 76, and a cathode follower 80.
Patent GB-1509720-A (GB)
Title: Electrical connection device
IPC: H01R13/646
Filed: 1975-08-20
Abstract: 1509720 Electrical connection device TELDIX GmbH 20 Aug 1975 [26 Sept 1974] 34642/75 Heading H2E An electrical connection device for providing a connection to the screen 18 of a cable 17 comprises a sleeve 1 and an axially movable ring 8 for clamping the screen therebetween. A heat-shrinkable moulding 13 engages in an annular groove in the sleeve and prevents rotation of the clamping ring. As shown, the sleeve is part of a socket connector and has an annular groove 16 in which the braid is held by a wire ring 19 or may be soldered. In Fig. 2, not shown, the clamping ring (20) is corrugated on its internal clamping surface, is held against rotation, and the axial movement of the sleeve is obtained by a separate nut (23).
Patent GB-521932-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C33/74
Filed: 1938-11-28
Abstract: 521,932. Bearings. CORNELL, E. S. Nov. 28, 1938, No. 34653. [Class 12 (i)] [Also in Group XXVI] A bearing assembly for a rotary shaft 14 comprises spaced bushings 24, 25, with a compressible packing ring 30 between them, external adjustable means being provided for compressing the packing and thus forcing it against the shaft. As shown, for a submerged pump, the packing ring 30 is cup-shaped, of a synthetic rubber, and is pressed by a spring 32. The spring pressure is transmitted to the ring 30 by washers 31, 35, and by a pair of rods 36 passing through holes in the bushing 24. The spring pressure is adjusted by a screwed cap 34. Packing 40 in the latter is compressed by a sleeve 41.
Patent GB-843623-A (GB)
Title: Improvements in or relating to devices for testing filamentary structures
Inventor: HEWITT ERIC JOHN ROBERT
IPC: B65H63/06
Filed: 1955-12-03
Abstract: 843,623. Electric tests. BRITISH NYLON SPINNERS Ltd. Nov. 6, 1956 [Dec. 3, 1955], No. 34657/55. Class 37. In apparatus for determining the thickness. of yarns. the thread is passed between the plates of a condenser 3 forming part of a tuned circuit connected to the grid of phase discriminating valve 2. The third grid is fed from transformer 8 with the output of crystal-controlled oscillator 1. Differences in the phase of the voltages between the control grid and earth and the suppressor grid and earth control the anode current of discriminator 7. The potential developed at the anode may be amplified or attenuated and used to operate a recorder. Alternatively, leads 10, 11 are connected to a high pass filter, a full wave rectifier and an integrating motor driving a radiation counter. The reading of the counter indicates the mean deviation of the yarn denier.
Patent GB-990242-A (GB)
Title: Improvements in or relating to data imprinting apparatus
Inventor: BROWN STANLEY CAMERON
IPC: B41L45/02
Filed: 1961-09-27
Abstract: 990,242. Printing-machines; date, time and number-printing apparatus. ACCOUNT-TOKENS Ltd. Dec. 21, 1962 [Sept. 27, 1961], No. 34665/61. Headings B6C and B6D. Cylinder machines.-A housing 5, Figs. 1 and 3, supports a printing platform 1 mounted on a rubber bed 2, the platform 1 supporting a plastic embossed printing (e.g. address) plate. Pivoted within the housing at 10 is a framework 4 carrying time-printing wheels 3 indexed by links 8 from a continuously driven motor 7 and date-printing wheels indexed manually by a link 9, the framework being resiliently supported by rubber plates 15. Sheets or webs to be printed are placed over the plate and wheels and printed by a roller 17 moved across the printing position by a handle 18. The roller is carried in a housing 16 pivoted on an axis at right-angles to the axis 10. Either the roller 17 absorbs ink, or an ink-ribbon is positioned between it and the sheets or webs, printing in either case being on to the upper side of the paper.
Patent GB-320557-A (GB)
Title: Improvements in bridges for broken shell spectacles & the like
IPC: G02C5/02
Filed: 1928-11-26
Abstract: 320,557. Blyth, E. Nov. 26, 1928. Spectacles.-Separate bridges for the repair of broken non-metallic spectacle frames are made of non-inflammable material and grooved at each end to fit over the rim and the projecting portion of the broken bridge. The new bridge may be secured by adhesive or by rivets.
Patent GB-356572-A (GB)
Title: Improvements applicable to rock-drills and like implements
IPC: E21B1/34
Filed: 1930-11-19
Abstract: 356,572. Internal combustion percussive tools. WARSOP, H. E., Launder Street, Nottingham. Nov. 19, 1930, Nos. 34769and38644. [Class 124.] An internal-combustion engine a has its cylinder head replaced by a cylinder b wherein reciprocates a differential free piston c adapted to strike or to carry a rock drill, caulking or riveting tool or other percussive appliance. A passage i is opened by the engine piston prior to exhaust to effect the return of the free piston and is provided with a valve k for closing it at starting. Suitable twist mechanism may be provided and a passage in the tool for clearing the hole. The fuel tank l is mounted below the handle m and the engine parts are covered by a casing n.
Patent GB-915036-A (GB)
Title: Fluid circuits
IPC: F16K31/10
Filed: 1960-10-11
Abstract: 915,036. Valves. YALE & TOWNE MANUFACTURING CO. Oct. 11, 1960 [Feb. 4, 1960], No. 34824/60. Class 135. A fluid-control valve comprises a body, first and second passageways in the body, valve means, such as 18, in the first passageway for preventing flow of fluid therethrough in one direction, actuating means, such as 16, operable by fluid pressure applied to the second passageway to open the valve means, and control means 48 to prevent operation of the actuating means. In the preferred embodiment, a pump P and a sump R are connected by a reversing valve S and lines L-1, L-2 to the valve which is in turn connected to a pair of double-acting rams R-1, R-2. With the control means 48 in the position shown, a flat portion 57 on the control means 48 permits fluid pressure in a passage 13 to lift an apertured piston 16 having an extension 37 to engage and open a spring- loaded ball valve 18 in the exhaust line L-4 from the ram R-1 while fluid flows to the other side of the ram through a spring-loaded ball valve 17 and a line L-3. Operation of the reversing valve S causes the piston 16 to be moved downwardly so that the direction of movement of the ram R-1 is reversed. The control means 48 may be rotated by a solenoid 59 with a spring-loaded plunger so that the piston 16 is locked and a piston 45 co-operating with ball valves 43, 44 for a second ram R-2 is freed, a by-pass valve T enables the fluid load to be removed from the pistons prior to operation of the means 48. The latter may have only one flat portion and be reciprocated to free the pistons alternately. Specification 798,133 is referred to.
Patent GB-1122747-A (GB)
Title: A tungsten halogen lamp
Inventor: HALBERSTADT ALEX LEOPOLD
IPC: H01K1/28
Filed: 1966-08-04
Abstract: 1,122,747. Lamp caps. BRITISH LIGHTING INDUSTRIES Ltd. 25 July, 1967 [4 Aug., 1966], No. 35028/66. Heading H2E. [Also in Division H1] A tungsten-halogen lamp consists of a tubular envelope 1 enclosing a single coil filament 2, the lead-in wires 6, 7 of which extend through the ends of the envelope which are brought together and secured to a common base 4. The envelope is preferably U-shaped, the ends being closed by pinches which are cemented in a channel shaped cap 4, the pinches resting on the end walls 4<SP>1</SP> of the channel. The wires 6 are connected to pins 8 on the cap, one directly and one by way of a fuse 9. Tungsten spirals 3 support the filament in the envelope at intervals along its length. Instead of pins 8, other forms of connector such as a screw cap may be used. The envelope may contain argon, with an addition of iodine.
Patent GB-931946-A (GB)
Title: Production of tablets of pharmaceutical and other chemical compositions
IPC: A61K9/20
Filed: 1961-09-29
Abstract: A pharmaceutical tablet comprises a compressed powder of a mixture of a therapeutically active substance, a diluent therefor and at most 0.1% by weight of silica gel in the form of microfine powder i.e. having a particle size of the order of a millimicron. The ingredients of the composition are mixed and compressed directly to form the tablet.  0.01 to 0.1% of the silica gel may be employed.  Tablets of aspirin, contain aspirin, wheat starch and 0.03% silica gel.