baber/WOPTO huggingface dataset:
Patent GB-653871-A (GB)
Title: A process for the preparation of polyalkylene glycols
IPC: C07C43/13
Filed: 1948-07-29
Abstract: Polyalkylene glycols HO-(CR2)n-O-(CR2) 2CH2-O-(CR2)n-OH in which R is hydrogen or alkyl and n is 2 or 3 are made by subjecting <FORM:0653871/IV (b)/1> to the action of hydrogen at elevated temperatures and pressures in the presence of a hydrogenation catalyst.  Products specified are 1,3-bis - (2 - hydroxyethoxy) propane, 1,3 - bis - (2-hydroxyethoxy) - 2 - methylpropane, 1,3 - bis - (2-hydroxy - 1 - methylethoxy) butane, 1,3 - bis-(2 - hydroxypentoxy) - 2 - ethylbutane, 1 - (2-hydroxyethoxy) - 3 - (2 - hydroxypropoxy) propane, 1,3-bis-(2-hydroxy - 1 - methylbutoxy) - 2 - ethylpentane, 1,3 - bis - (2 - hydroxy - 2 - methylpropoxy)-3-methylbutane, 1,3-bis-(3-hydroxypropoxy) propane, 1,3-bis-(3-hydroxy-2-methyltrimethylpropoxy)-2-methylpropane, and 1,3-bis-(3-hydroxypropoxy-2-methylpropane.  Conventional hydrogenation catalysts are specified base-metal catalysts being preferred particularly pyrophoric nickel, cobalt and iron. Catalyst carriers and promoters may be used.  Amounts of catalysts specified range from 0.2 to 35 per cent, preferably 1-25 per cent, by weight of heterocyclic treated.  Temperatures specified range from 150-400 DEG C., preferably 200-300 DEG  C. and pressures of 1000 pounds per square inch, preferably at least 1500 pounds per square inch, are employed.  Inert solvents such as mono- and polyhydric alcohols, ethers, esters, ketones and hydrocarbons may be present.  In an example, 2-[2-(2-hydroxyethoxy)ethyl]-1,3-dioxolane is hydrogenated at 260 DEG  C. and 1600 pounds per square inch, in the presence of Raney nickel for two hours and 1,3-bis-(2-hydroxyethoxy) propane recovered by distillation from the cooled, filtered reaction mixture. It is stated that 1,3-bis-(2-methyl-2-hydroxyethoxy) propane may be obtained from 2-[2-(2-methyl-2-hydroxyethoxy), ethyl]-4-methyl-1,3-dioxolane in a similar fashion at 250 DEG  C. and that the method is of particular value in the preparation of compounds which are completely symmetrical with respect to the central carbon atom of the alkylene group to which the terminal hydroxyalkoxy groups of the general formul  are attached.
Patent GB-456888-A (GB)
Title: Improvements in pens, pencils, and similar writing instruments
IPC: B43K29/00
Filed: 1936-07-22
Abstract: 456,888. Pens, pencils, &c. combined with viewing-apparatus. BEEBY, T. L., Foxbar, Watford Road, St. Albans, Hertfordshire, and FINBURGH, A., and FINBURGH, D., (trading as WYVERN FOUNTAIN PEN CO.), Brooke Street, Holborn, London. July 22, 1936, No. 20296. [Classes 132 (iii) and 146 (iii)] [See also Groups XVIII and XX] A top cap or the point - protecting cover of a pen, pencil, or similar writing instrtunent is provided with one or more lenses and associated advertising or pictorial transparencies which can be seen enlarged by looking through the lens. The cap 3 is secured to the pencil body 1 by a screw 4, which may be the end of the spare-lead chamber or of the feedmechanism of a propelling-pencil, and is bored with a transverse hole 5, at opposite ends of which are mounted a lens 6 and transparency 7. If the cap is hollow the lens and transparency are arranged in opposite holes in the wall. Alternative caps bearing different advertisements or pictures may be provided for the same instrument.
Patent GB-617067-A (GB)
Title: Flexible insulating pads
IPC: E04C2/24
Filed: 1945-08-08
Abstract: 617,067. Compound sheet materials. DEHN, F. B. (Consolidated Vultee Aircraft Corporation). Aug. 8, 1945, No. 20343. [Class 140] [Also in Group XIII] An insulating pad which may be secured to walls comprises a flexible mat 7, Fig. 3, of loosely matted fibre-glass, a reinforcing foraminous textile material such as widemesh cheese cloth 8 over one face of the mat, a flexible plastic film 9 bonded to the cloth, and a layer of finishing fabric 10, which covers the other face of the mat and is lapped around the margins of the film as at 14. Seams 11 extend throughout and secure the laminations. Sockets 12 of fasteners are inserted in the corners and along the margin so that the pad may be installed, with the film 9 inwards, against a wall. The plastic film may be formed of cellulose derivatives such as ethyl cellulose, cellulose acetate or nitrate, or of thermoplastic resins such as polyvinyl chloride or acetate. The fibrous mat, cheese-cloth and plastic film are bonded together by softening the film with a solvent such as methyl ethyl ketone and applying heat and pressure. In a modification, the fibrous mat comprises two sections 7 and 23, Fig. 5, between which is bonded a film 24.
Patent GB-660515-A (GB)
Title: Improvements in or relating to presses for drawing sheet metal
IPC: B21D24/06
Filed: 1949-08-05
Abstract: 660,515. Cupping. RHODES, C. J. Sept. 19, 1949 [Aug. 5, 1949], No. 20426/49. Class 83 (iv). In order to facilitate the stripping of the work in a cupping press in which the lower die and the draw ring are interconnected so that the lower die is raised against the action of a spring as the drawing ring is depressed by the descent of the upper die, the drawing ring and lower die are positively returned to their initial positions during the first part of the return stroke of the ram carrying the upper die. The lower die or forming block 3 normally rests upon a collar 4 disposed in the bed plate 1 and slidably engaging a rod 5 screwed into the block 3. The draw ring 3a is supported by pins 3b resting on the ring 4. Four rods 7 projecting downwardly from the bed plate 1 form guides for a pressure plate 8 and carry a bracket having vertical side cheeks 11 and 12 on which are mounted pinions 16 engaged by racks 17a on the rod 5 and by racks 19 on members 18 pivotally mounted upon the underside of the pressure plate 8 and formed with upper bevelled ledges 19a. Adjustable links 30 pivotally attached to the ram 29 have each on the inner side of the lower ends an inner bevelled ledge 32 and an outer ramp 33. In operation the pressure from the upper die 28 is transmitted through, the draw ring 3a and pins 3b to the collar 4 and depresses the pressure plate 8 causing the rack members 18 to rotate the pinions 16 which, through the racks 17a raise the block 3 against a spring 24. As the ram approaches the bottom of its stroke the links 30 swing inwards as the ramps 33 engage rollers 26 so that upon upward movement of the ram the ledges 32 engage the ledges 19a and the plate 8 and draw ring 3a are drawn upwardly whilst the forming block 3 is drawn downwardly. Just before the plate 8 returns to its normal position ramps 33 disengage the rollers 26 and the spring 24 completes the return of the plate 8, draw ring 3a and forming block 3. Specifications 367,503 and 534,122 are referred to.
Patent GB-621872-A (GB)
Title: Improvements relating to electrical timing circuits
IPC: H04L13/14
Filed: 1946-07-09
Abstract: 621,872. Electric indicating systems. SCOLES, G. J., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. July 9, 1946, No. 20506. [Class 40 (i)] [Also in Group XL (b)] Relates to a system in which signals 1 ... 6, Fig. 3, representing different items of intelligence are transmitted in a recurring cycle, and at the receiver are distributed to different circuits by pulses coincident with the signals and derived from a time base 1, Fig. 2, which is applied to a tripping device to produce a pulse at a predetermined voltage; it is stated that the operation of the tripping devices is uncertain at voltages occurring near the beginning or end of the time base, and according to the invention this defect is overcome by the production of two time-bases, relatively phase displaced, each controlling tripping devices which together produce pulses coincident with the signals 1 ... 6. A synchronizing signal transmitted with the train of intelligence signals is applied at S to render valve V1 conducting to discharge condenser C1 and produce a sawtooth oscillation A, Fig. 2; this time base is applied from A, Fig. 1, to trip circuits producing pulses coincident, e.g. with signals 3, 4, 5, to control the distribution of the signals 3, 4, 5 to appropriate circuits; this time base is applied to valve V2 to render it conducting at a level X, Fig. 2, and make valve V3 non-conducting, thus producing a pulse C, Fig. 2, at C, Fig. 1, which is differentiated at C2, R4 to produce pulses D, E, Fig. 2, at D, E, Fig. 1, and thus render valve V4 conducting to discharge condenser C4 and produce a second time base O, Fig. 2, at 0, Fig. 1, phase displaced with reference to A and which is used to trip devices to produce pulses coincident, e.g. with signals 6, 12. Specification 621,752 is referred to.
Patent GB-625824-A (GB)
Title: Improvements relating to apparatus for receiving recurrent electric signals
IPC: G08C15/08
Filed: 1946-07-09
Abstract: 625,824. Pulse modulation. SCOLES, G. J., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 9, 1946, No. 20509. [Class 40 (v)] For indicating and/or recording the variation in amplitude of pulsed signals, a condenser is charged during each signal to a voltage dependent upon the signal amplitude and is shunted by a valve which is rendered conductive during part of each pulse period to a substantially constant extent independent of the signal amplitude. A receiver for one channel of a telemetering system is described, the system being of the type in which during successive portions of a time cycle, trains of pulses are transmitted, the amplitudes of which correspond to the quantities to be transmitted, as described in Specification 621,752, [Group XL (b)]. The incoming signals are applied continuously from terminal S to the grid of valve V4 which is normally cut off by current through its cathode resistance R6 from the conducting valve V3. A negative gating pulse, to cut off V3 and release V4, is applied to cut off V3 and release V4, is applied to the grid of V3 from the differentiating circuit C1, R1, fed with a square wave from the anode of valve V1. The grid A of V1 is fed with a saw-tooth wave the period of which is equal to the metering cycle, and it conducts at a time determined by the bias applied to the grid B of valve V2, the two valves having a common cathode resistance R5. The signal pulses corresponding to one metering circuit are thus passed from valve V4 to the phasereversing valve V5 and differentiating circuit C4, R4 and thence to the grid of valve V6 conducts to charge condenser C2 to a potential depending upon the signal amplitude. While V6 is conducting, the pentode V7, which together with resistance R2 is connected across C2, is also rendered conducting by a positive pulse from the anode of valve V2, so that C2 discharges to a lower voltage if the signal pulses decrease in amplitude. The valve V6 may be a diode.
Patent GB-1203783-A (GB)
Title: Improvements in or relating to chairs having hinged backrests
Inventor: BAYLEY WILLIAM ANDREW
IPC: A47C7/44
Filed: 1967-05-03
Abstract: 1,203,783. Chairs. G. K. N. SANKEY Ltd. 30 May, 1968 [3 May, 1967], No. 20519/67. Heading A4U. A back-rest frame of a chair is hinged at 34 to the seat 18 and is urged forwardly by a spring unit which is hinged to the seat at 46 and engages in one of three notches 48, 50, 52 in an arcuate pressure plate 36 welded to the back, each notch affording a different spring reaction. The spring unit comprises two springs (62, 63) of different hand surrounding a square sectioned shank 42 which is pivoted at 46 to the seat and passes through a slot (43) in the pressure plate 36. The lower ends of the springs abut a plate (64) which is retained on the shank 42 by a nut (67), and the upper ends of the springs abut the upper part (58) of a two part housing (56) enclosing the springs and press a nose 60 on the housing part (58) into the selected notch 48, 50, 52. The plate 64 has lugs (68) disposed in bayonet slots (69) in the rotatable lower part (57) of the housing. The lower part (57) is rotated to cause the lugs to slide along inclined portions of the slots (69) to facilitate pivoting of the spring unit. The pivoting of the back rest frame is limited by an arm 38 on the pressure plate abutting the seat 18 and in the other direction by the ends of the back rest frame also abutting the seat 18. The height of the seat can be adjusted by screwing a nut 17(a), loosely mounted on the top of a sleeve 14, on to a post (16) supporting the seat. The nut is held captive on the sleeve by a screw (17c).
Patent GB-933797-A (GB)
Title: Recovery of uranium from a zirconium-uranium metallic mass
IPC: G21C19/48
Filed: 1961-06-07
Abstract: Uranium is separated from a uranium-zirconium mass by contacting the mass with anhydrous hydrogen chloride at 350 DEG -800 DEG C. to form and remove volatile zirconium tetrachloride and then contacting the uranium-containing residue with carbon tetrachloride at 550 DEG  to 650 DEG C. to form and volatilize uranium chloride vapour which is condensed.  The uranium condensate may be either dissolved in nitric acid, the purified uranium values being obtained by known solvent extraction techniques, or fluorinated with elemental fluorine or with a liquid fluorinating agent, e.g. chlorine trifluoride, bromine trifluoride or bromine pentafluoride to convert the uranium to uranium hexafluoride. Examples relate to zirconium clad nuclear reactor fuel specimens being treated as above, the carbon tetrachloride being entrained in carrier gases nitrogen and hydrogen chloride.
Patent GB-625399-A (GB)
Title: Bed-settee
IPC: A47C17/20
Filed: 1947-07-30
Abstract: 625,399. Bed settees. COORSH, D., COORSH, S., and McLEISH, T. July 30, 1947, No. 20579. [Class 52 (ii)] A bed settee comprises a seat 2 pivoted at 3 to the frame 1, an articulated mattress 7, 8, 9, 10 the end section 7 being pivoted at 28 to brackets 27 on the frame 1 and a back cushion 19 pivoted at the top 20 to rods 21 slidable vertically in guides 22 and pivoted at 24 to a link 23 the other end of which is pivoted at 25 to brackets 26 on the frame 1. To convert the settee into bed position the back cushion 19 is slid upwardly and its lower end is rotated anticlockwise by the aid of a spring 15. The seat 2 is then swung over forwardly causing the mattress sections 7-10 to be raised into position by links 12, 13, 14 assisted by springs 16, 17 and the seat to be supported in reversed position by legs 4 and its pivotal connection 3. A pillow rest 11 is provided pivoted to the end mattress section 10 and having springs 18 which tend to hold the rest 11 either in erected or in folded position according to the disposition of the springs on either side of the dead centre.
Patent GB-949341-A (GB)
Title: Fluid distributor for regulating the trim of automobile vehicles
IPC: F15B13/04
Filed: 1961-06-07
Abstract: 949,341. Levelling. RECHERCHES ETUDES PRODUCTION. June 7, 1961 [June 13, 1960], No. 20633/61. Heading B7D. To maintain a mechanically propelled vehicle chassis at a predetermined level above the ground independently of the load, a body B is attached to the chassis and lever L is connected to a wheel axle and upon variations in level actuates a distributing valve G<SP>1</SP> to vary the pressure in either chamber H or N on opposite sides of a spring-balanced diaphragm M attached to a slide valve K which connects a pressure supply A or an atmospheric connection O to the opening U connected to pneumatic or oleopneumatic suspension devices. The distributing valve G<SP>1</SP> is connected to a fluid supply, e.g. engine suction, which is derived from a different source to the supply to the slide valve K. The valve G<SP>1</SP> is in the form of two co-operating discs.
Patent GB-364643-A (GB)
Title: Improvements in and relating to the supply of electric energy
IPC: H02J3/46
Filed: 1930-07-08
Abstract: 364,643. Supply systems. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. July 8, 1930, No. 20636. Convention date, Sept. 28, 1929. [Class 38 (iv).] Running generators in parallel ; automatic regulation.-The bridle contact control device of Specification 292,086, [Class 38 (iv), Electric supply and transmission systems &c.], is employed in the control of a number of machines in any number of stations covering the peak load of a network or networks. The bridles 4 of all the wattmeters, each controlling an appropriate reversible motor M effecting governor adjustment, are mechanically or electrically coupled so that the regulation of a single machine to maintain the frequency is automatically followed by the similar regulation of all the others and the load distribution is maintained.
Patent GB-345597-A (GB)
Title: Improvements in and relating to apparatus for folding fabric longitudinally
IPC: B65H45/101
Filed: 1930-07-09
Abstract: 345,597. Folding fabrics. NANTERME, J., 7, Rue Janin, Lyons, France. July 9, 1930, No. 20806. Convention date, Aug. 14, 1929. [Class 42 (ii).] A doubling apparatus consists of two bars 1, 2 relatively fixed and a third bar 3 pivoted at their junction, all being substantially in one plane, and the bars 1, 2 being angularly adjustable relatively to the bar 3 or vice versa. The fabric passes vertically upwards, half of its width being bent 180‹ over the bar 1, the other half being bent 90‹ over the bar 2, then, after passing horizontally, another 90‹ over the bar 3, the doubled fabric passing vertically downwards.
Patent GB-202505-A (GB)
Title: Improvements in spoon rests for use with syrup tins and the like
IPC: A47G21/14
Filed: 1922-07-31
Abstract: 202,505. Mills, A., and Mills. J. W. July 31, 1922. Spoon rests. - A spoon rest for a syrup tin or the like is made by bending a wire a into an open-ended r i n g having an offset portion d on which a spoon e may be supported. The loop g may be used to hold up the ring inside the tin while the ends b, b<1> are pressed together and inserted under the flanged rim. After insertion of the ring, the loop g hangs down; it may be used to support a spoon h in the position shown in dotted lines. One end of the ring a may be formed into a coil b' to support the lid f.
Patent GB-239154-A (GB)
Title: Improvements relating to the securing together of sheets of paper
IPC: B31F5/00
Filed: 1924-04-28
Abstract: 239,154. Vago, P., and Paldy, J. April 28, 1924. Sealing. - In methods of binding together or closing letters and other superposed sheets of paper along one or more linear seams, the sheets between or adjacent to the seams not being bound together, a T-shaped or other channel-shaped fold is formed in the surface of the paper at a distance from the edge. The folding may be facilitated by a preliminary passage of the sheets between rotatable interengaging rollers 8, 9, Figs. 4 and 5, with an annular groove and rib as shown. The folding is produced by a pressure rail 53, Fig. 4, cooperating with a dovetail groove in a base over' which the sheets pass. For dealing with papers of different thickness, the groove may comprise pivoted side cheeks 18, 19, Fig. 7, relatively adjustable by right-hand and left-hand screwspindles 15, 16 and an operating lever 17, the rail 53 being adjustable towards the groove and the groove being funnel-shaped with the front edges rounded to prevent tearing the paper. The fold 4, Fig. 1, may be stiffened by subsequent passage through a rotatable pair of rollers 11, 12, Fig. 4, with interengaging teeth-like projections, for example the rollers of the machine described in Specification 215,019. The pressure between the rollers 11, 12 may be produced by a spring 10 or may be adjusted by varying the distance between their centres, and one may be mounted on an eccentrically arranged shaft so that their action may be interrupted.
Patent GB-718189-A (GB)
Title: Improvements in and relating to the production of electrically conductive films
Inventor: PRESTON JOHN SILVEY
IPC: B01D33/00
Filed: 1951-09-05
Abstract: 718,189. Electric discharges. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 1, 1952 [Sept. 5, 1951], No. 20973/51. Class 39(1) [Also in Groups XI and XXXVI] Method of providing a surface of an article of electrically non-conducting heat resisting material with a thin electrically conductive film comprises depositing on the surface by cathode sputtering in the presence of oxygen insufficient in concentration to oxidise the metal completely, a thin uniform coating derived from metallic tin or indium and thereafter heating the coated surface under oxidising conditions substantially to complete the oxidation of the coating. In an example a pale brown coating 5 x 10<SP>-6</SP> cm, thick derived from tin of high purity was deposited by cathode sputtering in an atmosphere of argon containing a trace of air at a pressure of 0.05 mm. on photographic plate or bottle glass and thereafter heated for 5 minutes at 350‹C. After cooling the film was found to have a resistance of 500 to 1000 ohms between opposite edges of a square sample. Rubbing the coating with a dry cloth or washing it with water temporarily increases its conductivity. The films can be used on the glass windows of electrical or other indicating instruments to avoid the accumulation of static charges thereon when they are cleaned and which by attracting the pointer may lead to false readings, as heating elements for glass windows or screens which are heated electrically to prevent deposition of moisture or ice for example for heating microscope slides, on high tension insulators to avoid the risk of breakdown or flash-over, or as a fixed resistance or a simple variable resistance, one contact being fixed to the end of a strip of film, and the other being slidable along the film.
Patent GB-320665-A (GB)
Title: Improvements in or relating to means for drawing curtains and the like
IPC: A47H5/032
Filed: 1928-07-19
Abstract: 320,665. Kimber, W. E. July 19, 1928. Curtains, suspending.-In apparatus for drawing curtains, particularly heavy theatre curtains, the sliding movement of a carrier along the curtain rail causes a subsidiary movement of the carrier, or a member in association therewith, for ensuring a regular transference of the curtain runners &c. from the carrier on to the rail during the sliding movement of the carrier. In the construction shown a carrier b of inverted U-sbape is arranged within a U-shaped rail a, the leading edge of the curtain being attached at f to one end of the carrier. When the curtains are folded the runners k to which the curtain is attached are all resting on the top of the carrier. On the sliding movement of the carrier, by pulling the cable h', to unfold the curtains the end c<3> of the carrier is tilted by a roller d carried thereby riding up an inclined surface c<1> of a strip c resting on the bottom of the rail. the tilt being maintained on further movement of the carrier by the sliding movement of the strip c due to the abutment of a stop e on the carrier with the upturned end c<2> of the strip, which abutment takes place when the roller d has reached the end of the inclined surface c<1>. The tilting of the carrier prevents the runners passing on to the rail until the pleats of the curtain are fully unfolded. To gather the curtain the cable h is pulled so that the tilted end c is lowered owing to the roller d running down the inclined surface c<1>, after which the strip c is drawn along with the carrier. The end c<3> is tapered to facilitate the collection of the runners upon the carrier. The top and other parts of the carrier and the strip c are formed of vulcanite, vulcanized fibre, &c. In a modification, the strip c is dispensed with and the carrier is formed in two parts connected by links so that the upper part is raised when the cable h<1> is pulled to unfold the curtains, a spring being provided to aid this separation of the parts. Specification 300,602 is referred to.
Patent GB-1106695-A (GB)
Title: Improvements relating to the production of cigarette papers
IPC: D21H13/08
Filed: 1965-05-18
Abstract: Cigarette paper comprises regenerated cellulose fibres of Specifications 650,896 and 678,335 and natural cellulose fibres. Fibres of the two kinds are beaten separately, then mixed and formed into paper.  Mineral loading agents, e.g. calcium carbonate, if desired, may be added to the mixed pulp or to either beaten material before they are mixed.  The natural cellulose fibres may be of flax, hemp or wood pulp.