baber/WOPTO huggingface dataset:
Patent GB-194815-A (GB)
Title: Improved process of tanning and manufacture of agents therefor
IPC: C14C3/08
Filed: 1921-12-21
Abstract: In the preparation of thioaldehydes, which may be by any of the usual methods, polymerization takes place and results in the formation of a tri-thioaldehyde.  Sulphones are prepared by the oxidation of the tri-thioaldehyde with acidified potassium bichromate, nitric acid, ozone, percarbonates or halogens.  The mixtures obtained in the preparation of these compounds may be condensed with phenols or aromatic hydrocarbons to produce a resin which is sulphonated in the ordinary way, the polymers breaking down during the reaction.  The following examples of the preparation of substances useful as tanning-agents are given:-(1) Sulphuretted hydrogen is passed through a mixture of formaldehyde solution and concentrated hydrochloric acid, until saturated, the free acid being finally neutralized.  (2) Formaldehyde solution is heated with a saturated solution of sodium thiosulphate and, after cooling, concentrated hydrochloric acid is gradually added until all the thiosulphate has entered into the reaction, the excess acid being then neutralized with alkali.  (3) A saturated solution of sodium bichromate is gradually added to the product from example (1) before neutralization, the acid being neutralized at the end of the reaction which is determined by the persistence of the red colour of the bichromate.  (4) The solution from example (3) is condensed with crude cresol, the resinous product being separated from the liquid and dissolved in concentrated sulphuric acid.  The end point of the reaction is determined by boiling a sample in water when it should dissolve to form a colloidal solution.  The product is dissolved in water and the acid neutralized with burnt lime, the calcium sulphate being filtered off.  (5) Ordinary phenol is added to the product from example (1) before p neutralization and the mass heated on a water-bath until it solidifies to a resinous product which is separated from the liquid, sulphonated and treated as in example (4).  (6) Crude anthracene is mixed with the product from example (2) and heated until a resinous mass results, this being sulphonated as in example (4).  (7) Hexamethylenetetramine is dissolved in water and sulphuretted hydrogen is passed through the solution until saturated.  The liquid is then heated with b -naphthol and concentrated hydrochloric acid until a resin results which is sulphonated and finished as in example (4).
Patent GB-412853-A (GB)
Title: Improvements in or relating to receptacles for growing plants
IPC: A01G9/02
Filed: 1933-12-07
Abstract: 412,853. Receptacles for growing plants. LE COUTEUR, G. S., Aldebaran, Rocquaine, St. Peter's, Guernsey. Dec. 7, 1933, No. 34503. [Class 6 (ii).] A receptacle for growing plants, for use with a hot water pipe in a greenhouse, comprises a compartment for soil and, at one side of said compartment, a trough the bottom of which is situated above the heated pipe and a wall of which separates it from the said compartment and has at its lower end an opening to permit water to flow from the trough into the soil compartment. A rectangular receptacle has its side walls connected by an inverted U-shaped partition 11 below which the side walls are cut away to provide a passage 12 for the heated pipe 13. The trough is formed above the partition 11 by two transverse walls 15 which leave openings 16 communicating with the compartments 17. The water is thus warmed by the pipe 13 as it percolates through the soil. Alternatively only one compartment 17 may be provided having a side extension to overhang the pipe 13, the trough being formed between the end wall of the extension and a transverse wall 15. In another modification, Fig. 3, a rectangular box provided with a trough 14 stands on a tray 21 which has two flanged openings 22 communicating with flower pots 23 arranged on each side of the pipe 13. In this case also only one compartment 17 may be provided and the trough may overhang the pipe 13. More than one pair of pots 23 may be provided if desired. The receptacle may be made of earthenware, concrete, wood or metal.
Patent GB-416312-A (GB)
Title: Improvements in headlights for motor cars
IPC: F21S8/10
Filed: 1932-12-06
Abstract: 416,312. Systems of lighting for road vehicles. LA TORRE Y LOPEZ, J. M. DE, 3, Calle de Barquillo, Madrid. Dec. 6, 1932, No. 34527. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 19, 1933]. [Class 75 (iv).] In a system of lighting for road vehicles, two auxiliary lamps are fixed on the front of a vehicle and are adapted to be switched on together or separately so as to project light to one or both sides of the road when passing another vehicle or rounding a curve, each lamp projecting a concentrated beam and a diffused beam. In the form shown, each lamp comprises an electric lamp bulb F at the focus of a parabolic reflector C adapted to produce a concentrated beam and having two openings K to allow a diffused beam to be projected by a second reflector D. These lamps may be switched on automatically by means of the steering gear, they may be mounted in a single casing, and the two reflectors C, D may be formed as a single unit.
Patent GB-1494115-A (GB)
Title: Refiner for wood pulp or the like material
IPC: D21D1/22
Filed: 1975-08-20
Abstract: 1494115 Conical mills, cylindrical refiners, disc mills M PILAO 20 Aug 1975 [15 Jan 1975] 34547/75 Heading B2A A pulp refiner has spaced first and second refining members and a rotatable third refining member between them. The members have cooperating comminuting projections constituted by parallel ribs integral with the remainder of the members. The refiner may be a disc refiner, a cylindrical mill with a rotor 128 Fig. 6 or a conical mill with a rotor 228 Fig. 7. The main embodiment described is a disc mill in which the fixed discs 26, 30 Fig. 1 cooperate with a rotor disc 28. Disc 30 is axially adjustable with a motor 38 and worm drive 40. The rotor disc 28 is also freely axially movable to float between the disc 26, 30. The disc 28 is a unitary body with openings 82 and mounting portions 84 Fig. 2 which are secured to a hub 58 Fig. 5 by screws 66. The disc 28 however has limited axial freedom relative to the hub 58 and screws 66, being guided by a pin 70 which extends into a blind bore 72 of the disc 28. The feed stock is in all cases delivered to the refining zone along two paths P 1  and P 2 .
Patent GB-435172-A (GB)
Title: Improvements relating to the conversion of electric current
IPC: H02M7/15
Filed: 1933-12-08
Abstract: 435,172. Converting. ALLGEMEINE ELEKTRICITATS-GES., 2, Friedrich Karl- Ufer, Berlin. Dec. 8, 1933, No. 34598. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 11, 1934]. [Class 38 (ii)] In a converting arrangement, e.g. rectifier, inverter, or frequency changer employing gridcontrolled discharge devices, the apparatus supplying the control potentials is remotely controlled. In the form shown in the Figure, the grids of a rectifier 3 are connected to a phase shifting transformer 5 which can be adjusted by means of a reversible motor 6 controlled from a distance through relays 91, 9<11>. In a modification the grids are supplied from a transformer, the primary of which is connected to a winding on the main transformer 2 through chokes provided with saturating windings to vary the phase angle. These windings are supplied from a D.C. circuit through a resistance which is adjusted by the motor 6. In a further modification the motor 6 is eliminated and the relays operate direct onto a toothed wheel on the spindle of the phase shifting transformer.
Patent GB-367847-A (GB)
Title: Improvements in variable speed gearing
IPC: F16H61/02
Filed: 1930-11-18
Abstract: 367,847. Variable speed gearing. BALLENTIN, W., (known as MIELKE, W.), and UHLICH, E., 7, Berlinerstrasse, Hirschgarten, Berlin. Nov. 18, 1930, No. 34752. [Class 80 (ii).] A variable-speed gear for vehicles comprises in combination a single control lever for braking the vehicle and changing over from idle running into reverse or forward running, and a centrifugal slipping clutch for automatically regulating the speeds in driving connection with the driven shaft and with a planet wheel carrier loose with respect to the driving and driven shafts. The speed ratio varies between zero and a maximum, which is varied by the engine throttle. A reversing-gear shown on the right of Fig. 2 in idle position comprises a sleeve clutch s which is slid on an intermediate shaft a<1> to engage a clutch u<4> on the propeller shaft u<1> for,forward driving. An epicyclic train s<2>, w, u<5> then turns solid, and the automatic change gear A is operative. To brake the vehicle, a brake x is applied. To reverse, the clutch s is withdrawn and the brake x applied as before to the carrier w<2> of the planets w. The clutch s is operated by a lever s<3>, Fig. 4, pivoted at s<5> and having a forked end adjacent a gate t<3>, Fig. 5. The single control lever t moves in a slot t<5> to actuate the lever s<3> to two positions corresponding to the in and out positions of the clutch s. Springs s<9>, Fig. 4, hold the lever s<3> where it is left by the lever t when the latter is moved along another gate slot t4 to apply the brake x. The brake x is tightened with clutch s in to brake the vehicle, and with clutch s out to reverse the drive between the automatic change gear A and the shaft u<1>. The driving-shaft a, Fig. 2, of the automatic gear A carries a pinion b alongside a wheel b<1> fast on the shaft a<1>. These gears mesh with stepped planets c in a loose carrier f with internal teeth p. A second loose drum o supports planets g meshing with the annulus p and with a sun gear h on a sleeve k, which upon a disc l supports the weights n, Fig. 3, of the centrifugal coupling. The weights n are pivoted at n<3> to the disc l and biased inwards by springs o<1>. When the engine speed is high enough, the weights n are thrown outwards and wipe round with friction on the drum o the effect being to produce a torque on the shaft a<1>, which is driven at a speed to suit the load. Arrangements with bevel and with interengaging planet elements are described, in some of which the reversing-train is not separate, as in Fig. 2, but incorporated. Forms are described with clutch arrangements for cutting out the centrifugal coupling and obtaining independent drives. In a form shown in Fig. 12, the reversing-gear is incorporated and the centrifugal coupling comprises a friction disc n slid axially by centrifugal weights n'.
Patent GB-1385876-A (GB)
Title: Textile drafting
IPC: D01H5/08
Filed: 1971-07-23
Abstract: 1385876 Gilling JAMES MACKIE & SONS Ltd 4 July 1972 [23 July 1971] 34771/71 Heading DIN The fallers in a gill box are mounted between endless chains 10 for movement in a closed path around which they are driven by a member 16 engaging directly with alternate fallers. The spacing of the fallers is maintained constant by the chains. Guide tracks 34 may be provided for guiding the cranked ends of alternate fallers.
Patent GB-282699-A (GB)
Title: Improvements in and relating to pistons
IPC: F16J1/09
Filed: 1927-12-22
Abstract: 282,699. Laugaudin, E. J. Dec. 23, 1926, [Convention date]. Pistons; packing; rods. - A piston comprises two heads 1, 4 mounted on concentric rods 2, 5, and drawn towards one another by means of a spring 13 engaging an abutment 7 in the rod 2 and a collar 6 on the rod 5. Grease or other fluid to serve as packing is introduced under pressure to the space 8 between the piston heads through a lubricator 11 and the bore of the rod 5.
Patent GB-1062020-A (GB)
Title: Heating and feeding devices for plasticizing machines
IPC: B29C48/03
Filed: 1964-08-25
Abstract: 1,062,020. Plasticizing moulding materials BORG-WARNER CORPORATION. Aug. 25, 1964 [Sept. 5, 1963], No. 34788/64. Heading B5A. A preheating device for a plasticizing machine comprises a hopper 32 for supplying plastic material to a heating chamber 27 through trap means 31 which alternatively connects the heating chamber 27 to a source of heating fluid, With the trap 31 in the position seen in Fig. 3 (not shown) heated air is forced through a pipe (47), a chamber (46) and a screen (49) into the chamber 27 where it heats a charge of plastic material. The air is exhausted through a passage 21 in a ram 19 slidable in a cylinder 16. The entrance to the ram passage 21 is covered by a screen 23. When the material is sufficiently heated the ram 19 is moved rearwardly to allow the material to drop into the cylinder 16. Forward movement of the ram forces the material into a cylinder 13 containing a plasticizing screw 11 which delivers the plasticized material to an injection or extrusion moulding machine. Movement of the trap 31 to the left in Fig. 3 (by means of a cylinder 34) allows a fresh charge of material from the hopper 32 to drop through a passage (51) into the chamber 27.
Patent GB-633927-A (GB)
Title: Excavating teeth
IPC: E02F9/28
Filed: 1947-12-30
Abstract: 633,927. Excavating earth. ELECTRIC STEEL FOUNDRY. Dec. 30, 1947, No. 34813. Convention date, June 6, 1945. [Class 68 (i)] The shank 22 of a replaceable excavator tooth has a tapered nose over which fits the tooth 36. On the upper wedge surface 28 of the nose is a protuberance 52 having formed therein a recess 55 extending down into the nose, the recess containing a block 56 of resilient material such as rubber. The block carries a curved metal strip 57 projecting beyond and to the rear of the protuberance. The socket of the tooth has a longitudinal recess to accommodate the protuberance 52 and also a transverse recess 59 extending through the sides. In assembling, the tooth is slipped on to the nose of the shank and a key pushed home in the recess 59, the metal strip 57 engaging a notch 65 in the key and biassing the key against the shoulder 60 of the recess 59 to ensure that the tooth remains on the nose. A tongue 34 fits into a recess 48 on the tooth. The tooth can be made in one piece or of welded parts, in which case the materials are chosen to suit the particular working conditions.
Patent GB-1191596-A (GB)
Title: Collapsible Shelf for a Refrigerator.
IPC: F25D25/02
Filed: 1968-07-22
Abstract: 1,191,596. Shelves. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 22 July, 1968 [25 July, 1967], No. 34888/68. Heading A4B. A refrigerator shelf 1 with a variable area supporting surface comprises spaced slats 4 slidably engaged by apertures 6 in their ends 5 on supports 7 of a frame 3, adjacent ends of adjacent slots 4 being movable towards each other against a spring bias. In one embodiment (Fig. 2), helical springs (8) are disposed between the ends of adjacent slats 4. In another embodiment, Fig. 3, the spring bias is provided by a resilient, accordian strip 9 having alternate fold lines 12 and ribs 11 fitted over the slat ends.
Patent GB-323097-A (GB)
Title: Improvements in buttons or badges
IPC: A44C3/00
Filed: 1928-11-27
Abstract: 323,097. Gaunt, C. F. Nov. 27, 1928. Buttons or badges 1 of the kind which are constructed entirely from metal with a desired pattern or indicia material 4 stamped, cut, or indented therein, have the sunken parts 6 thereof coloured or stained to throw the raised bright metallic surface 2, 4, 5 into relief. The background 6 may be corrugated or roughened to receive the colouring material. A pin for attaching the button or badge may be secured thereto by turning over the periphery of the button &c. around a portion of the pin.
Patent GB-1393912-A (GB)
Title: Method for cutting metal and cutting torch therefor
IPC: F23D14/54
Filed: 1972-07-26
Abstract: 1393912 Cutting by fusion UNITED AIRCRAFT CORP 26 July 1972 [13 Sept 1971 15 Sept 1971] 35018/72 Heading B3V [Also in Divisions F4 and C5] The gas stream of a metal cutting torch is formed by reacting a solid fuel 13 with oxygen to form an oxygen-rich central portion surrounded by a fuel-rich outer portion. The torch includes a cartridge 2 releasably held by a latch 5 against a biasing spring in a tubular holder 3 which has an insulated portion or a handle 4 with a protective shield 51. The holder 3 is provided with dimples 27 to space the cartridge 2 from its inner wall. The cartridge 2 comprises a casing 8 enclosing insulators 11, 12, a hollow solid fuel element 13, e.g. polymethylmethacrylate, and an oxygen generating material 14 formed of two solid segments (14a, 14b) (Fig. 3, not shown), of a composition comprising chlorate or perchlorate and iron or magnesium compacted with fibreglass or asbestos, e.g. 86À5% NaClO 3 , 12À5% Fe and 1% fibreglass. Ignitable sections 18 are mounted between the segments (14a, 14b) which are held together by a glue formed of igniter material (19). In use, a cap 23 is removed from a metal nozzle 9 of the torch and the oxygen generating material 14 ignited by an igniter 15 which is actuated by a pull cord 24. The gas stream produced by the reaction of the fuel 13 with the oxygen may have a temperature of 1760 C., a burn time of 3 minutes and at least a sonic velocity. The speed of ignition of the fuel 13 may be increased by an ignitable material 18a. An increase in gas pressure within the cartridge 2 is prevented by a pressure relief valve 10. The hot spent cartridge 2 is prevented from rolling along a surface on which it is placed by an arm 25.
Patent GB-479704-A (GB)
Title: Improvements in or relating to zinc foils and the like
IPC: B21B1/40
Filed: 1936-12-21
Abstract: 479,704. Rolling zinc foil. KAMPS, O. Dec. 21, 1936, No. 35116. [Classes 83 (ii) and 83 (iv)] Sheet zinc is plated on one or both sides with aluminium or aluminium alloy and then rolled down to foil thickness À003 miilimetres. Such foil can be ornamented, stamped, electroplated or lacquered &c. Specifications 304,991, [Class 83 (iv)], and 396,585 are referred to.
Patent GB-1415509-A (GB)
Title: Ducted fan gas turbine jet propulsion engines
IPC: F02K3/02
Filed: 1972-07-27
Abstract: 1415509 Gas turbine ducted-fan jet engine ROLLS-ROYCE (1971) Ltd 18 Sept 1973 [27 July 1972] 35116/72 Heading F1J A gas turbine jet engine of the ducted-fan type for aircraft includes a jet pipe 14 with a fixed outlet area nozzle and reheat equipment 40 in the jet pipe, the fan duct 18 being provided with angularly adjustable nozzles 24 (vane cascades as shown), having an associated axially slidable valve 28 and being disconnectable from the jet pipe 14 by means of flap valves 38 operated in conjunction with valve 28 so that the engine operates either (a) with reheat, when valves 38 are closed and valve 28 open, or (b) without reheat, when valve 28 is closed and valves 38 open. Vanes 24 may be rotated to various positions to provide, e.g. rearward or downward thrust. The vanes may be in the form of angularly adjustable elbow members.
Patent GB-1241671-A (GB)
Title: Reeling preassembled parallel wire strands for bridges and other structural applications
Inventor: FISH ROBERT WALTER
IPC: D07B5/00
Filed: 1968-07-23
Abstract: 1,241,671. Reeling pre-assembled parallel wire strand. UNITED STATES STEEL CORP. 23 July, 1968 [21 Aug., 1967], No. 35186/68. Heading D1T. To prevent a strand of parallel wires from distorting when it is wound onto a reel, the strand has a clamp applied successively to successive portions of the strand, the clamp being rotated to produce opposite hand twists in the strand, the strand being then advanced and wound onto the reel; the twist in the strand being insufficient to prevent the wires in the strand from reverting to their original parallel arrangement when unwound from the reel. In Fig. 2 a length of the strand IS is gripped between spaced trolleys 6a, 6b. A central trolley 6 r  also grips the cable and its cable clamp is rotated to impart twists of opposite hand to the cable lengths on opposite sides of the central trolley 6r. The grip of the trolley 6b is then released and trolleys 6a, 6r move with the cable as it is fed onto the drum 10. When the trolley 6r reaches trolley 6b its grip on the cable is also released and trolley 6a continues to move with the cable until it reaches trolley 6r. Thereafter winding is temporarily halted whilst the trolleys are moved back to the settings shown and re-clamped onto the cable. The process is then repeated.
Patent GB-352161-A (GB)
Abstract: 352,161. Time checks for games. CAIRA, D., 1, Port Street, Stirling. May 15, 1930, No. 14945. [Class 132 (ii).] In an apparatus for checking the time during which billiard or other balls are in use for play, of the kind in which the recording-mechanism is stopped by means in contact with the last of a plurality of balls to enter a storing cabinet and is restarted upon the release of the balls from the cabinet, the balls are stored in a chamber disposed below a zig-zag shoot 15 which forms a reverse incline down which the balls drop when inserted through an opening 9 in the cabinet 1. The chamber is situated behind a window 14. The third ball to enter the chamber depresses a blade spring 26, that through a rod 27 and linkage 30, 32, causes a spring member 33 to engage and stop the balance-wheel 34 of a clock 13. To release the balls, a knob 18, Fig. 6, is pulled outwardly from the casing, whereby the floor 16 of the chamber, being slidably mounted in guides 23 and connected to the knob through a lever 19, is removed from under the balls which become accessible at an opening 10. The departure of the balls from the chamber releases the spring 26 and the clock 13 is restarted. A plunger 36, Fig. 2, connected to the floor 16 forces the balls downwardly as the knob 18 is actuated.
Patent GB-1482914-A (GB)
Title: Semi-permeable polymeric membranes
IPC: C08F8/00
Filed: 1973-07-25
Abstract: 1482914 Semi-permeable membranes of mixed acetals of PVA BABCOCK & WILCOX Ltd 25 July 1974 [25 July 1973] 35341/73 Headings C3C and C3P Semi-permeable membranes for use in reverse osmosis, ultrafiltration and related techniques are formed from mixed acetals of polyvinyl alcohol containing at least 25% acetal units in total, the remainder being polyvinyl alcohol or acetate units. Membrane formation is effected conventionally by casting from a solution, optionally containing a swelling agent or pore producing agent to form a film which is then immersed in a liquid which is miscible with the solvent of the solution but not the mixed acetal: optionally some or all of the solvent may be evaporated from the cast film before the immersion. In examples, mixed acetals are prepared by reaction with propionaldehyde/ cinnamaldehyde, acetaldehyde / cinnamaldehyde, acetaldehyde / butyraldehyde and propionaldehyde / isobutyraldehyde, and membranes are prepared therefrom in Examples (3-6)(b) using solutions in dimethylsulphoxide and acetone, with lactic acid also present in some cases, and the cast film being immersed in water. The film pores were shrunk (in Example 3b) by treatment with steam and water vapour.
Patent GB-522111-A (GB)
Title: An aerostat, particularly for air defence purposes
IPC: F41H11/02
Filed: 1938-12-05
Abstract: 522,111. Lighter-than-air craft. WOCHER, M., FLUCK, F., and NIEDERMANN, J. Dec. 5, 1938, No. 35381. [Class 4] An aerostat for antiaircraft defence consists of a body floating in the air and provided with an upper platform 2 for crew and arms, and having lateral-balance bodies 4. It may be anchored by the cable 5 or free, in which case it is provided with propelling means. Mechanical stabilizing means may also be provided. The cable 5 may be used to carry electric current.