baber/WOPTO huggingface dataset:
Patent GB-1357631-A (GB)
Title: Polyurethane foams
IPC: C08G18/76
Filed: 1971-01-21
Abstract: 1357631 Polyurethane foams IMPERIAL CHEMICAL INDUSTRIES Ltd 11 Jan 1972 [21 Jan 1971] 2833/71 Heading C3R Flexible foamed polyurethanes are prepared by reacting together in the presence of a blowing agent and a conventional cross-linking agent free from phosphorus and of molecular weight not exceeding 500, a polyether having 3 or 4 hydroxyl groups and a polyisocyanate composition comprising from 70 to 90% by weight of a tolylene diisocyanate and from 30 to 10% by weight of a diarylmethane diisocyanate composition containing related triisocyanate and higher polyisocyanates in addition to diisocyanate. In an example a mixture of 80 : 20 TDI and a crude diphenylmethane diisocyanate, containing diisocyanate triisocyanate and higher functionality isocyanate, such as may be prepared by phosgenating an acid catalysed aniline-formaldehyde condensation product, is reacted with an ethylene oxide tipped oxypropylated glycerol of hydroxyl value 32 mg. KOH/gm. and having 13% of the alkylene oxide units derived from ethylene oxide, in presence of water as a blowing agent, triethylamine and 1,4-diazabicyclo- (2,2,2)octane as catalysts, and a triethanolamine cross-linking agent.
Patent GB-266520-A (GB)
Title: Improvements in and relating to tensioning devices for blankets and printing plates in printing machines
IPC: B41F27/12
Filed: 1926-02-01
Abstract: 266,520. Wright, F. W., and Mann & Co., Ltd., G. Feb. 1, 1926. Printing-surfaces; blankets.-A tensioning-device for a flexible printing-plate, or an offset or impression blanket, comprises a bar to which the plate &c. is attached, provided with a pinion operated by a rack, the position of which is controlled by a fine adjustment. The plate &c. 2 is secured to a rotatable bar 4 to which is keyed a pinion 6 engaging a rack 7 mounted in a bracket 8 and operable by a fine pitched screw 11. To allow the rack to be disengaged from the pinion to enable quick adjustment of the bar 4 to be effected by a spanner applied to its squared end, the bracket 8 is mounted on a pivot 9. In one construction, Fig. 1, the bracket is moved in one direction by a spring 14 and in the other direction by a handle 19, a detent being provided to hold the bracket in the disengaged position of the rack. In another construction, Fig. 3, an eccentric 21 engaging between a pair of horns 20 on the bracket is provided to move the bracket in both directions.
Patent GB-588210-A (GB)
Title: Improvements relating to the manufacture of electrical insulators from thermoplastic cellulose derivatives
IPC: H01B3/18
Filed: 1945-02-05
Abstract: Electrical insulating components in the form of sleeves, tubes, beads and other thin-walled hollow articles having the properties of high heat-softening point, high dielectric strength and low-loss factor are obtained by forming into the desired shape under heat and pressure a thermoplastic composition comprising an ester or ether of cellulose having the said properties and a substantially water-insoluble plasticiser, cooling, removing the plasticiser by extraction with a volatile liquid which is a solvent for the plasticiser, but a non-solvent for the cellulose derivative and substantially freeing the article from the volatile liquid by evaporation.  Suitable esters and ethers of cellulose are the acetate, propionate, butyrate, acetate-butyrate, acetate-propionate and ethyl-cellulose.  Suitable plasticisers are dimethyl phthalate, diethyl phthalate, methyl-phthalyl ethyl glycolate, ethyl-phthalyl ethyl glycolate, triacetin, tri-(monochlorethyl) phosphate and p-toluene sulphonamide or mixtures of any of these with a plasticiser of low solvent power such as tricresyl phosphate.  For cellulose acetate plasticised with dimethyl phthalate, a suitable extracting liquid is methanol, ethanol or diethyl ether, but other volatile liquids such as benzene and toluene may be employed.  The insulating articles may be formed by extrusion, compression moulding, injection moulding or blowing.  In an example, an insulating sleeve is made by extruding a mixture of cellulose acetate and dimethyl phthalate at 155 DEG  to 160 DEG  C.  The tube is cut into short lengths, extracted with boiling diethyl ether to remove the plasticiser and dried at 50 DEG  C. to remove the ether.
Patent GB-295000-A (GB)
Title: Method of and apparatus for filling bags
IPC: B65B1/18
Filed: 1928-01-31
Abstract: 295,000. Bates Valve Bag Corporation, (Assignees of Cornell., J. E., and Verwys, A. J.). Aug. 5, 1927, [Convention date]. Filling materials into bags.-In an apparatus for filling valve bags, the bag 15 is placed with its valve opening 14 on the filling tube 13 of a hopper 11, and with its lower end not quite reaching to cross-bars 39. 46 mounted on a jigger frame 35. A clutch handle 83 is operated to place the main driving-shaft 79 in gear with a countershaft 26, from which a propeller worm 21 is rotated to deliver a charge into the bag. At the same time, the frame 35 is raised by the action of a cam 56 on a roller 54 in the forked head of a link 53 adjustably pivoted at 57, and a belt 48 rotates an eccentric 50 to causa the cross-bars 46 to vibrate. As the bag fills its effective length is shortened by bulging and the frame 38 carrying the cross-bars rises to support it and to shake the contents down. During the filling operation, the bag is held on the nozzle by a clamp 16, pivoted at 17, and held down in position by a spring 20. When the bag is full, a lug 64 on the cam 56 depresses an arm 63 and operates links 78, 73 to lift the clamp 16 from the bag, and links 72, 69, 66 to cause an ejector 67 to remove the bag from the machine. At the same time, the clutch is automatically disconnected to stop the feed of material, and the jigger frame returns to its lower position. Two filling nozzles may be arranged side by side to be actuated alternately, a gate in the charge delivering device 12 being turned to one side or the other by the clutch 83. In a modified form, a number of filling devices are mounted on a rotary spider, and are adapted to arrive in turn beneath one or more charge delivering de. vices. The valve aperture of the filled bag may be closed by paste.
Patent GB-776539-A (GB)
Title: Preparation of explosive substances in thermoplastic or pourable form
IPC: C06B45/10
Filed: 1946-01-30
Abstract: 776,539. Explosives. MINISTER OF SUPPLY. Oct. 18, 1948 [Jan. 30, 1946], No. 3069/46. Class 9 (2). A crystalline explosive substance (e.g. cyclonite, pentaerythritol tetranitrate, tetryl), which cannot safely be melted, is rendered thermoplastic or pourable by mixing a wax-like substance with it and rolling the mixture. In a jacket-heated vessel, cyclonite is added to 40-60 times its weight of water and 10 per cent. of its weight of beeswax and heated to 80‹ to 90‹C. After stirring, most of the water is filtered off and the wax-coated granular product is passed through a differential rolling mill having five pairs of knurled bronze rolls. The water is then removed by stirring in a heated vessel. In a second example, wet cyclonite and 12 per cent. paraffin wax plus lecithin are mixed and rolled to produce a composition pourable at 70‹C. In a further example, beeswax dissolved in carbon tetrachloride is added to ten times its weight of cyclonite and the mixture transferred in batches to the rotating pan of an end-runner mill, having a scythe-like doctor.
Patent GB-524463-A (GB)
Title: Improvements in or relating to gas burners for cooking stoves
IPC: F23D14/06
Filed: 1939-01-30
Abstract: 524,463. Gas burners. EMSCOTE FOUNDRY CO., Ltd., and HARVEY, F. Jan. 30, 1939, No. 3175. [Class 75 (i)] A tubular gas-burner 23 for heating the radiant of a griller is combined with a separately operable boiling gas-burner 19 mounted on top of it, a single gas nozzle projecting into each tube supplying either burner alternatively. The boiling burner 19 and its mixing tube 26 are made in one with the grilling burner 23, and are pivotally mounted at one end 25 so that either the mixing tube 26 or the tube 23 is brought opposite the nozzle 29. A spring clip 33, fixed to a handle 32 integral with the burners, grips the nozzle 29 to hold the grilling burner in the operative position. When the burners are lowered to bring the boiling burner into operation, the end of the mixing tube 26 rests on the nozzle 29. The movement of the burners may, however, be horizontal instead of vertical. The burner 19 comprises a tunnel-shaped part 37 which is almost closed by a disc-like cap 38 with oblique nozzles around its edge.
Patent GB-138173-A (GB)
Title: Improvements in windlasses
IPC: B66D1/06
Filed: 1919-02-10
Abstract: 138,173. Langman, T. E., and Langman, R. E. Feb. 10, 1919. Winches; driving-gear.-In windlasses driven either by hand or by a motor J, the rope gearing F connecting the engine and windlass is put into or out of action by raising or lowering a snatch block G.
Patent GB-489853-A (GB)
Title: Improvements relating to aerofoils
IPC: B64C3/54
Filed: 1937-02-03
Abstract: 489,853. Aircraft wing-flaps. MILES, F. G. Feb. 3, 1937, Nos. 3229 and 34147. [Class 4] An aircraft wing is provided with two flaps normally nested one above the other, each flap being adapted for alteration of angle of incidence relative to the main wing and at least one being supported on travelling mechanism adapted to displace it rearwardly relative to the main wing and to the other flap. In one form, Fig. 6, a split flap 3 is pivotally mounted at 2 below an extension flap 5 which is carried by mechanism comprising a hydraulic or screw jack of which the plunger 6 carries a pivot 7 for a lever 8 rigid with flap 5. To the end of plunger 6 is pivoted one of a pair of toggle links 9, 10 of which the other is pivoted to flap 5. The centre pivot 11 of the links is connected to a cable 12 passing through a fixed eye 13 in the wing and provided with a stop 12A such that after a certain rearward travel of the flap the cable is held to cause the toggle links to open and move the flap downward. A spring 14 serves to take up slack in the cable in the nested position of the flap. Spring means may be used to return the flap to neutral on the return stroke. The control mechanism of flap 3 may be so interconnected with that of flap 5 or may be such that the flap moves slightly downward when flap 5 is operated, in order to give the latter free passage. Plunger 6 may carry cam means serving to depress flap 3 and may be guided in rollers. In a modification, Fig. 8, the flaps are extended by lazy-tongs linkage having upper pivots 20, lower pivots 21, and intermediate pivots 22 disposed nearer to the lower than to the upper pivots so that rearward movement of the aftermost links is accompanied by downward movement. Various curved paths may be obtained by asymmetrical arrangement of these pivots. Links 23A, 23B carry pivot pins 23C, 23D. A flap 24 is pivoted on pin 23C and is formed with a cam slot 24A engaged by pin 23D. A second flap 25 which is adapted to nest below flap 24 is similarly mounted on links 23E, 23F. Extension of the linkage is by jack means of which the centre line is shown at 26. When fully extended the chord of the first flap is at an angle of 18¢‹ to the chord of the wing and that of the second flap is at 22‹ to that of the first.
Patent GB-756221-A (GB)
Title: Improvements relating to mining machines
Inventor: SPROUL JOHN CONNEL
IPC: E21C27/46
Filed: 1951-02-10
Abstract: 756,221. Mineral-mining machines. MAVOR & COULSON. Ltd. Jan. 28,1952 [Feb. 10. 1951], No. 3306/51. Class 68(1) In a single or double wedgeheaded planer advanced by hydraulically situated, pistoncylinder propulsion means 14,15, 16 there is interposed between the or each head 10 and a cutter 17 thereof an auxiliary pistoncylinder means 22, 23 24 which is used to urge the cutter 17 forward when the head cannot be advanced by the means 14, 15, 16. Preferably the cutter 17 projects ahead of associated cutters 18 as described in Specifications 674,028 and 674,029, which are referred to. The means 22, 23, 24 is supplied with liquid under pressure from the same source as the means 14, 15, 16.
Patent GB-259093-A (GB)
Title: Improvements in expansible suit cases, trunks and the like
IPC: A45C7/00
Filed: 1926-02-05
Abstract: 259,093. Anderson, W. A. Feb. 5, 1926. Trunks or the like designed to be of variable capacity.- An expansible suit case, trunk &c. comprises a rigid body portion a, Fig. 1, to which is hinged the lid c the body portion being open at the lower end and connected to a travlike bottom portion d by means of flexible leather &c. side and end walls of a gusseting character. The flexible walls are secured to the interior edges of the parts above and below them so that in the normal undistended condition the body portion rests upon and is flush with the bottom tray (see Fig. 2). To enable, the portions to be maintained the requisite distance apart in the expanded condition, slotted bars l, Fig. 4, pivoted to the ends of the tray and having gapped portions l<4> adapted to house or retain studs m secured to the body portion, are provided. Locking members n pivoted to the bars co-operate therewith to maintain the studs housed in the gaps l<4>.
Patent GB-922035-A (GB)
Title: Infrared dimensional gauge
IPC: G01B11/04
Filed: 1961-01-30
Abstract: 922,035. Measuring width photo-electrically. BARNES ENGINEERING CO. Jan. 30, 1961 [Feb. 19, 1960], No. 3440/61. Class 40 (3). An apparatus for the measurement of the width of a body or for the indication of the position of one edge of the body, there being a substantial temperature difference between the body and its surroundings, comprises an infra-red detector, a rotating mask, and a fixed mask, the masks having apertures therein such that the apertures coact to allow the detector to scan the body and its background. The output of the detector is in pulse form, the pulse width being proportional to the time in each scan cycle during which the detector receives infra-red radiation. Radiation from the body and its background is imaged on to an aperture 10 in a fixed mask 3, Fig. 2, and passes via aperture 11 in rotating mask 4 to the detector. Co-operation of the apertures 10 and 11 gives a scanning effect. Fig. 3 shows an alternative form of aperture combination. The detector output passes through an amplifier 13, Fig. 4, and is clamped by diodes 14, 15 to upper and lower values in order to eliminate the effect of temperature variations in the body or its background. The circuit integrates the pulses and gives a reading on meter 17 proportional to the time of exposure to radiation. A recording device may be incorporated, and by the use of relayoperated servo mechanisms the width of the material being measured can be kept constant. Circuit 18 gives an indication of when the radiation is focused on the aperture 10.
Patent GB-488731-A (GB)
Title: Means for connecting scaffold poles
IPC: E04G7/04
Filed: 1937-02-05
Abstract: 488,731. Scaffold clamps. SPIRA, M. Feb. 5, 1937, No. 3448. (Class 20 (ii)] A scaffold clamp comprises a supporting plate 3, a chain passing around the scaffold poles 1, 2 and plate, and attached at its ends to side lugs on the supporting plate, and a cam lever 4 pivoted to the supporting plate, rotation of the lever causing the supporting plate to be moved away from the poles and to tighten the chain. A bearing plate 9 may be interposed between the cam lever and the pole on which it and the lever may be locked by a pin passing through apertures in the supporting plate and lever. In a modification, two separate chains may be used with their ends secured to two pairs of opposed side lugs on the supporting plate which may be provided with teeth to bite into a pole to prevent endwise movement.
Patent GB-1533635-A (GB)
Title: Method and apparatus for detecting the presence of signal components of a predetermined frequency in multi-frequency pcm signals
IPC: H04Q1/457
Filed: 1976-01-29
Abstract: 1533635 Detecting frequencies SOC ANON DE TELECOMMUNICATIONS 31 Jan 1975 [31 Jan 1975] 3474/76 Heading G4H In a TDM digital data transmission system, the digital signal, e.g. of 8 bits, in each time slot is derived by sampling and coding a single or multi-frequency analog signal. Upon reception, the instantaneous value of each incoming signal is stored and for each time slot this value is separately multiplied by the sine and cosine form of each one of a group of standard frequencies which are also stored in the receiver. The two products are then separately integrated and then added together. The Specification shows that the result of this addition has a high value when the particular standard frequency is present in the received signal, and is close to zero otherwise. Thus the detection of the frequency components of the multi-frequency signal is effected without the use of the usual demultiplexing and filtering techniques.
Patent GB-685138-A (GB)
Title: Improvements in or relating to reciprocating pumps
Inventor: BUCK LEON EDWIN
IPC: F04B1/14
Filed: 1950-02-10
Abstract: 685,138. Reciprocating pumps. WINGET, Ltd. May 10, 1951 [Feb. 10, 1950], No. 3502/50. Class 102 (i). A swash plate pump comprises a pump body 3 having a plurality of cylinders 5 surrounding a central bore 4 within which is mounted on axially spaced bearings 14, 15 a driving shaft 8 having at one end a conic crank 22 which carries a rotatably mounted swash plate 26, the pump pistons 38, which are preferably in the form of buckets, being pressed into engagement with the swash plate by springs 40. Liquid enters a casing 28 and passes through ports 42 and passages 41 into the pump chambers. The pump has an even number of cylinders, and delivers from alternate cylinders through passages 59 and an annular groove 60 to one outlet, whilst the other cylinders deliver through passages 59c and an annular groove 61 to a second outlet. Each cylinder has a delivery valve assembly comprising a disc valve 50 loaded by a spring 51 enclosed in a guide member 49 which is maintained in contact with the end of the cylinder by a disc 57 and stud 55.
Patent GB-905309-A (GB)
Title: Means for the selective disengagement and re-engagement of the axial clearance in a table drive of machine tools, more particularly cutting machines, such drive comprising a toothed rack and two driving worms engaging therewith
Inventor: SCHULTZ HANS-JURGEN
IPC: B23Q5/56
Filed: 1960-02-01
Abstract: 905,309. Metal-cutting machines. WERKZEUGMASCHINEN - FABRIK GILDEMEISTER & CO. A.G. Feb. 1, 1960, No. 3505/60. Class 83 (3). [Also in Group XXIV] For eliminating a backlash and providing a prestress between a pair of worms 3, 4, driving through a rack 1 the worktable of a machine tool, such as a milling machine, the worm 4 is movable axially of splines 5 relative to the worm 3 by a spindle 13 driven by a geared electric motor 14 and having screw-threaded thereon a non-rotatable nut 15 coupled through a lever system 20, 24 to a cross-piece 9 slidable on an axially movable non-rotatable spindle 6 by which the worm 5 is loaded axially leftwards through resilient members, such as cup-springs 10, arranged between the cross-piece 9 and a collar on the end of the spindle 6, a limit switch 25 being settable to stop the motor after a predetermined axial movement of the nut 15, resulting in a desired prestress on the worm 5. The lever system comprises lateral pins 17, Fig. 6, of the nut 15 engaging blocks 18 slidable in radial slots in part-circular members 20 which are rigidly interconnected by a pin 21 pivotal on a fixed member 22 and also carry lateral pins 23, offset from the pin 21 by a smaller distance than that of pin 17, and connected to the cross-piece 9 by straps 24 so that movement of the cross-piece relative to that of the nut is reduced. A finger 26 attached to the nut 15 operates the limit switch 25 which is adjusted through a rod 27 connecting it with a radially-projecting forked end of a crossshaft 31 geared to a hand-lever movable over a calibrated scale to preset the movement of the nut and thus the amount of clearance taken up and also when the clearance has been taken up, prestressing of the driving member. A second switch 37 operated by a finger 26<SP>1</SP> on the nut 15 stops the motor in the reverse direction, and two further table-operated switches control the table and milling operation.
Patent GB-1449692-A (GB)
Title: Rail vehicles
IPC: B60L3/00
Filed: 1974-01-25
Abstract: 1449692 Utilizing vibrations ALLMANNA SVENSKA ELEKTRISKA AB 25 Jan 1974 [9 March 1973] 3528/74 Heading B7J [Also in Division G3] In a motor driven rail vehicle, mechanical oscillations in the drive system, due to excess wheel slip, are sensed and used to automatically or manually vary the tractive force of the drive motor so as to reduce the oscillations. In a manual system, a signal proportional to the oscillations is displayed in the vehicle cab, and used to adjust the tractive force manually when oscillations occur. For details of the automatic control system see Division G3.
Patent GB-941595-A (GB)
Title: Improvements in or relating to fuel cells
Inventor: YOUNG GEORGE JAMISON
IPC: H01M4/96
Filed: 1962-01-30
Abstract: A carbon electrode for a fuel cell is made by spraying a thin film of a mixture of a resinous binder, a volatile solvent and carbon black on to a metal screen (especially a platinum gauze) and carbonizing the binder.  There may be more than one spraying step and a catalytic metal may also be incorporated in the mixture. The resinous binder may be coal tar pitch or a polymer as well as a synthetic resin.
Patent GB-704298-A (GB)
Title: Improvements in or relating to apparatus for deodorizing oils and fats
IPC: C11B3/14
Filed: 1949-10-10
Abstract: Apparatus for deodorizing fatty oils and for removing free fatty acids therefrom comprises a vertically elongated shell adapted to be evacuated and having therein a series of superposed trays each having side walls spaced appreciably from the shell wall, means for periodically supplying a batch of oil to the topmost tray, control means adapted to serially advance the oil in each tray, as a batch, to the next lower tray or, in the case of the lowest tray, to an exit conduit, after the oil has been in each of the trays for a predetermined time, and an inlet for a gaseous medium provided in the lower portion of at least some of the trays.  In Fig. 2. the shell contains five square trays 1-5, the corners of which are connected to the shell wall by brackets (not shown).  Toward the top of each tray are a multiplicity of baffle plates 18, 19, assembled in open squares nested one within another (Fig. 3), to provide a tortuous path for the escape of the vapours from the tray.  The baffle plates are inter-connected by angle-pieces 29 (Fig. 4); and the inner plates 18a are secured to the centre piece 30a while the outermost plates 18 are connected to the side walls 37 of the tray by plates 19a.  Above the baffle system is a hood 39 carrying a square skirt 40 projecting down to a level below the top edges of the walls <PICT:0704298/III/1> <PICT:0704298/III/2> <PICT:0704298/III/3> 37.  A depressed portion 42 is provided at one top corner of each tray, each portion having an aperture for the passage of a pipe for introducing the fatty oil into the tray from the tray above or, in the case of the uppermost tray, from the feed-tank (not shown).  Each pipe connecting two trays is provided with a motor-operated valve, e.g. pipe 47 has a valve 46, which operates to retain the oil in each tray for a definite period, e.g. half-hour.  The upper four trays are provided with heating coils such as 17, and the lowest tray is provided with a cooling coil 28. The trays are provided with perforated steam-inlet pipes 12-16.  The apparatus is evacuated by means of a steam-jet ejector (not shown) attached to the shell through connection F1. The oil is introduced into the top tray through pipe 43, and is withdrawn from the bottom tray through pipe 55.  Any condensate which forms in the shell collects in the base thereof, and is drained off through connection 31.  The shell may be made of steel, but the trays and baffles are preferably made of nickel or aluminium.