baber/WOPTO huggingface dataset:
Patent GB-430640-A (GB)
Title: Improvements in manually operated cutters or valve seats or the like
IPC: B23C3/05
Filed: 1934-11-20
Abstract: 430,640. Trueing valve seats. BLEY, K., 6, Harsdorferstrasse, Magdeburg, Germany. Nov. 20, 1934, No. 33391. Convention date, Dec. 29, 1933. [Class 83 (iii)] A hand-operated tool for trueing valve seats comprises a cutter 4 having one or more pairs of teeth 8, 9 constituting roughing and finishing teeth respectively arranged so that the paths of their edges cross each other in cutting so that chatter marks on the work are prevented. In one form, Figs. 1 and 2, the cutter holder 3 is slipped over a pilot stem 1, the cutter being radially adjustable and secured against a flange 11 by a plate 12 and screws 13. The depth of cut is limited by a screw 5. In a modification, Fig. 6, the cutter is not radially adjustable and is provided with two pairs of cutting teeth.
Patent GB-1008287-A (GB)
Title: Improvements in and relating to fuel cells
IPC: H01M8/08
Filed: 1963-08-23
Abstract: 1,008,287. Fuel cells. BROWN, BOVERI & CO Ltd. Aug. 23, 1963 [Aug. 27, 1962; May 27, 1963], No. 33452/63. Drawings to Specification. Heading H1B. A fuel cell has an anode and a cathode each having pores with a maximum diameter of 100 Á and each in compartments separated by a gas impermeable wall, both anode and cathode gases being continuously recirculated through the pores of the electrodes into the electrolyte, and also having a periodic pressure surge superimposed upon the pressure drop at the electrodes.
Patent GB-1280362-A (GB)
Title: Surgical package
Inventor: KUSTER JOHN J
IPC: A61F15/00
Filed: 1969-07-03
Abstract: 1280362 Packages with tear strips JOHNSON & JOHNSON 3 July 1969 [3 July 1968] 33571/69 Addition to 1213393 Heading B8C In a surgical package including a paper-board panel having a tear strip defined by interior and exterior score line, a pair of transverse score lines is provided in the tear strip to halt any delamination thereof. In a first embodiment the package comprises a plastics film bonded to the paper-board panel, the transverse score lines being cut on each side of the bond. In a second embodiment, a paper-board wrapper 50 is bonded to itself at 57, the bond being flanked by transverse score lines 55, 56.
Patent GB-816281-A (GB)
Title: Coagulation of lignin in aqueous suspension
Inventor: BALL FRANK J
IPC: C02F11/20
Filed: 1957-10-28
Abstract: A method of coagulating colloidal aqueous suspensions of lignin particles in insoluble form consists in freezing a quantity of such a suspension to a completely solid state to effect coagulation of the lignin particles, and thawing the solid to produce a slurry containing readily-filterable lignin particles. Examples: (1) A quantity of purified sodium lignin salt obtained by the sulphate process from conifers was dissolved and the solution acidified (pH 1 to 2) to produce a lignin slurry.  The slurry was cooled to - 20 DEG C., was maintained at this temperature for 20 hours, and thereafter thawed.  The filtration time was considerably reduced.  (2) The starting material was a lignin obtained by the soda process; this was dissolved in dilute sodium hydroxide solution and the solution acidified to produce a slurry which was then treated as in (1) above. (3) The sodium lignin salt of Example (1) above was converted to a slurry of the calcium salt by solution in sodium hydroxide solution and treatment with a solution of calcium chloride dihydrate.  This slurry was treated as before.  (4) A quantity of the sodium lignin salt of Example (1), in an oxidized state, was dissolved in alkali and the resulting solution acidified to produce the slurry.  The slurry was frozen overnight at - 20 DEG  C., thawed and filtered.ALSO:A method of coagulating colloidal aqueous suspensions of lignin particles in insoluble form consists of freezing a quantity of such a suspension to a completely solid state to effect coagulation of the lignin particles, and thawing the solid to produce a slurry containing readily-filterable lignin particles. Examples: (1) A quantity of purified sodium lignin salt obtained by the sulphate process from conifers was dissolved and the solution acidified (pH 1 to 2) to produce a lignin slurry.  The slurry was cooled to -20 DEG C., was maintained at this temperature for 20 hours, and thereafter thawed.  The filtration time was considerably reduced.  (2) The starting material was a lignin obtained by the soda process; this was dissolved in dilute sodium hydroxide solution and the solution acidified to produce a slurry which was then treated as in (1) above.  (3) The sodium lignin salt of example (1) above was converted to a slurry of the calcium salt by solution in sodium hydroxide solution and treatment with a solution of calcium chloride dihydrate.  This slurry was treated as before.  (4) A quantity of the sodium lignin salt of example (1), in an oxidised state, was dissolved in alkali and the resulting solution acidified to produce the slurry.  The slurry was frozen overnight at -20 DEG C., thawed and filtered.  Freezing after heating and freezing after filtering are ineffective. Heat-sensitive pharmaceutical solutions may be clarified by dissolving lignin therein, acidifying the lignin solution, freezing and thawing, and filtering off the coagulated lignin along with any entrained or adsorbed material associated therewith.
Patent GB-1416858-A (GB)
Title: Oligomers and their use in preparing aromatic polymers
IPC: C08G65/40
Filed: 1974-07-30
Abstract: 1416858 Sulphones DENKI KAGAKU KOGYO KK 30 July 1974 [30 July 1973] 33604/74 Heading C2C [Also in Division C3] Oligomers may be obtained by condensing the dipotassium salt of 4,4<SP>1</SP>-dihydroxy diphenyl sulphone with 4,4<SP>1</SP>-dichlorodiphenyl sulphone or 2,4<SP>1</SP>-dichlorobenzophenone, or the dipotassium salt of 4,4<SP>1</SP>-dihydroxybenzophenone with 4,4<SP>1</SP>- dichorodiphenyl sulphone.
Patent GB-391527-A (GB)
Title: Screw-cutting die-heads
IPC: B23G5/12
Filed: 1931-12-04
Abstract: 391,527. Screwing-dies and die-heads; chasers. HERBERT, SIR A., Dunley Manor, near Whitchurch, Hampshire, DRANE, H. A. 77, Northfield Road, Stoke, and MALLINSON, H., 33, Christchurch Road, Radford, both in Coventry. Dec. 4, 1931, No. 33637. [Class 83 (iii).] In a screw-cutting die-head the chasers are adjusted individually in their holders by the rotation of screw-threaded members which engage both the chasers and locking pads which clamp the chasers in the holders. Each holder 3 has a dove-tailed groove to receive a similar rib 9 on the chaser 2 and carries a cylindrical locking pad 5 which embraces the rib as shown in Fig. 4 and clamps the chaser on rotation of a screw 6. An adjusting member 8 screws into the locking pad and engages the chaser by means of annular rings 11 thereon and recesses 10 in the chaser. To secure a larger range of adjustment the rings may be engaged with different recesses on removal from the holder. As shown, the holders 3 are attached by screws 14 to slides 13 adjustable in radial dove-tailed grooves 16 in the body 15 by means of a cam-ring having closing cams 17 and opening cams (not shown) engaging the extended ends 14a of the screws 14. The cams 17 cover the whole width of the slides 13 so that they extend up to the holders 3, which lie against the outer face of the head. The cam-ring, which is biased to the open position by a spring, may be adjusted as described in Specification 391,526.
Patent GB-171904-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P1/02
Filed: 1920-11-29
Abstract: 171,904. British Thomson - Houston Co., Ltd., (General Electric Co.). Nov. 29, 1920. Systems fcr continuous-current motors only.- The sequence of varying resistance in the armature circuit, as in the lowering operation of a hoist motor, provides for the temporary inclusion of an additional resistance by the action of an electromagnetic switch having two windings 13, 19. During lowering, which corresponds to the right-hand set of controller contacts, the winding 13 is energized when the controller reaches an intermediate position, and a short-circuit is opened around a resistance R<3>, which is thus included in the circuit of the motor-armature A. The winding 13 is de-energized by the further advance of the controller, but the contact 12 is held open by a winding 19 composed of two branches connected to contacts 17, 18 of a relay 15 subject to the counter electromotive force of the motor. Whether this is increasing or decreasing, the relay responds after a definite change, depending on the adjustment of the winding, and, in responding, momentarily breaks the circuit of the active branch of the winding 19. The contact 12 then closes again and the resistance R<3> is short-circuited. The arrangement shown is an improvement on that described in Specification 113,473, and comprises a field winding F, connected in series for hoisting and in shunt for lowering an electromagnetic brake B, which is applied when its coil is de-energized, a lock-out switch 10 controlling an initial resistance R', and a resistance R<2> adapted to be connected with the motor armature and field in a closed loop when the controller is in the off position.
Patent GB-1059104-A (GB)
Title: Method and apparatus for producing recording material
IPC: B05C9/02
Filed: 1963-08-26
Abstract: 1,059,104. Coating webs. GEVAERT PHOTO-PRODUCTEN N.V. Aug. 26, 1963 [Aug. 24, 1962], No. 33735/63. Heading D1L. In coating a dispersion of magnetic material in a binder on to a support to form a layer thereon a supply means, e.g. an extruder head 11 is located in close proximity to the support 19 whilst this is continuously moved, and a magnetic field is maintained across the gap between the supply means and the support or a part lying close to or in contact with that face of the support which is opposite the face thereof on to which the dispersion is supplied. The magnetic lines of force are preferably arranged to be normal to the face of the support and they may extend over the major part of the width of the support but leave marginal portions. The support can be a web of material which forms a permanent support for the layer of dispersion or a roller or continuous belt from which the layer of dispersion can be removed. With an extruder type supply means, excess dispersion can be supplied to the extruder, the excess being removed from the extruder by a pump in a closed circuit arrangement (Fig. 3, not shown). Other forms of supply means illustrated are direct meniscus type and roller meniscus type coating apparatus with air knifes to control the thickness of the dispersion layer. The magnetic field can be produced from a permanent magnet or electromagnets with direct or alternating current. The magnetic layer may be aferro magnetic pigment dispersed into a solution of a film forming synthetic resin in a volatile solvent and may be applied to a base of plastics material, e.g. cellulose diacetate, cellulose triacetate, poly (vinyl chloride), poly (carbonates) and poly (ethylene terephthalate). After treatment such as stretching or calendering may be applied to the coated material.
Patent GB-605115-A (GB)
Title: Improvements in and relating to rotary printing machines
IPC: B41K3/08
Filed: 1945-12-14
Abstract: 605,115. Printing-machines. FANFOLD, Ltd., and MURRAY, S. M. Dec. 14, 1945, No. 33910. [Class 100(ii)] Addressing and like machines.-A rotary printing - machine comprises a printing-cylinder 1 provided with at least one carrier 9 holding a number of printing-plates, such as address-plates 5, each carrier being actuated when out of printing position to bring the plates into printing position in succession by an electrical device shown as an electromagnet 19 operated by means of a manual switch 32, an actuating-switch and an auxiliary switch, the two latter switches being engaged and disengaged by rotation of the cylinder 1 so that engagement of the actuating - switch occurs simultaneously with or during engagement of the auxiliary switch and disengagement of the auxiliary switch occurs sufficiently in advance of the disengagement of the actuating - switch to permit complete movement of the carrier 9 into a new position, operation of the manual switch enabling the operating circuit of the magnet 9 to be completed when both the actuating-switch and the auxiliary switch are engaged and the operating circuit being maintained completed until the actuating switch is disengaged by rotation of the printing-cylinder 1. The carrier 9 is rotated by a pawl carried by an arm 21 rocked periodically by engagement with a stationary cam 23, the pawl engaging a notch in a five-notch disc (for a five-plate carrier) fixed to the carrier, whenever a loose four-notch disc is rotated by a pawl carried by an arm 16 actuated by the magnet 19 to bring two notches into line. The actuating-switch comprises contacts 24 of the magnet 19 wiping over arcuate contact-strips 27a, 27b, and the auxiliary switch comprises contacts 25 which wipe over strips 26a, 26b. The effect of the latter is to energise a coil 30a operating a switch 30c to close the circuit of the former through coils 30b and 31, contacts 34, 34b closed by the switch 32, and a master switch 35. The strips 27a, 27b extend beyond the strips 26a, 26b, the angle being such as to ensure complete operation of the arm 16, since if the switch 32 is closed before the point A is reached, the action continues up to the point B, the switch being maintained closed by the coil 30b after the circuit of the coil coil 30a is opened, whereas if the switch 32 is operated between the two points there is no action. The switch 32 is retained in depressed position by a catch 33 which is released by the coil 31, a parallel circuit being simultaneously closed by engagement of an armature 31a with a contact 34a. A number of carriers 9 may be secured in adjusted positions in slots 3 in the cylinder 1, and each of a number of master switches, which may be time switches determining the number of prints, may control a group of carriers on one or more cylinders. According to the Provisional Specification, two brushes are provided instead of the pairs of contacts 24, 25, and the pawl is geared to the roller arm 21.
Patent GB-363783-A (GB)
Title: Improvements in cigarette holders
IPC: A24F13/22
Filed: 1930-11-12
Abstract: 363,783. Cigarette holders. WARING, H., Ravensholme, Riverfield Road, Staines, Middlesex. Nov. 12, 1930, No. 34029. [Class 130.] A cigarette holder consists of a short tube having a closed perforated and dished end 4 integral with the walls. Both ends are flared. The cross section may be oval.
Patent GB-1464062-A (GB)
Title: Non-aqueous stoving lacquers containing e-caprolactam as reactive diluent
IPC: C09D167/00
Filed: 1975-08-15
Abstract: 1464062 Polyester stoving lacquer BAYER AG 15 Aug 1975 [7 Feb 1975] 34050/75 Heading C3R A non-aqueous stoving lacquer comprises (a) polyester or alkyd resin(s), (b) aminoplast resin(s), and (c) #-caprolactam as reactive diluent. By wt. based on (a)-(c), there may be 35-89% (a), 10-40 (b), and 1-25% (c), mole ratio (c)/(b) being from 0À001 to 7. Also present may be 1-20% (d) caprolactone and 1-50% (e) organic solvent, (a) may be a polyester of oil-content 0-50%, acid no. 5-50, OH no. 70-450, and average M.W. 300-6000. (b) May have average M.W. 120-1250. Conventional additives may be incorporated. Specification No. 1,464,061 is referred to.
Patent GB-853659-A (GB)
Title: Apparatus for handling pulverulent materials
IPC: B65D88/72
Filed: 1955-11-28
Abstract: 853,659. Hopper discharge. MOORE, T. C. Feb. 19, 1957 [Nov. 28, 1955], No. 34090/55. Classes 78 (1) and 78 (4). Powdered material is discharged from bin 1 into hoppers 5 through openings 12 formed between the bars 6, 7, 13 of a structure 2 positioned at the base of the bin, the material normally resting on the bars and being discharged through the openings whenever compressed air is passed into the material from the hollow porous tiles 14, 16 to fluidize it. Alternatively, tiles 14, 16 may be omitted, the air being admitted to the bin through the bars 6, 7 formed porous.
Patent GB-1120901-A (GB)
Title: Improvements in and relating to pipe connections
IPC: F16L25/02
Filed: 1966-07-29
Abstract: 1,120,901. Pipe joints. EDM. GRESSEL A.G. 29 July, 1966 [3 Aug., 1965], No. 34122/66. Addition to 839,399. Heading F2G. An electrically-insulated coupling between pipes 1 and 7 includes a coupling member 4 of an electrically-insulating material, such as a ceramic or thermoplastic, threaded at either end to receive coupling sleeves 2 and 6 associated with each pipe 1 and 7 respectively, the joint between each pipe and coupling member being of the type described in the parent Specification 839,399 which includes a packing sleeve 3 or 5 having a conical outer portion of smaller angle of inclination than that of a conical inner portion of the respective coupling sleeve. Tightening of the coupling sleeves causes flat shouldered ends of the packing sleeves to be sealingly clamped between the coupling member and the pipe ends whilst the other ends of the packing sleeves are forced inwardly to seal against and produce slight constriction of the pipe walls.
Patent GB-638535-A (GB)
Title: Improvements in or relating to the preparation of stable penicillin-containing solutions
IPC: A61K31/43
Filed: 1947-12-24
Abstract: Solutions of penicillin and its salts are stabilized by introducing into the solvent before or after the dissolution of the penicillin an organic compound having at least two mercapto groups, these groups being attached to carbon atoms between which not more than one carbon atom intervenes.  The stabilizer is believed to form a compound with traces of metals which would otherwise catalyse the decomposition of the penicillin.  After the addition of the stabilizer, the solvent may be purified, e.g. by distillation, before or after the addition of the penicillin.  The stabilizer may be aliphatic, e.g. ethane-1 : 2-dithiol, propane-1 : 2- or 1 : 3-diol, propane-1 : 2 : 3-triol, 1 : 3-or 2 : 3-dimercapto propanol or salts of dimercapto propionic acid, and preferably contains a chain of not more than six carbon atoms. If aromatic, the simpler benzene and alkyl-benzene derivatives are preferred, e.g. 1 : 3-benzene-dithiol or 4-methyl-1 : 2-dimercapto-benzene.  The amount of stabilizer may be 0.00001 to 0.01 per cent by weight of the penicillin-containing solution. The solvent may be water or an organic liquid or a mixture of these, particularly a primary alcohol such as methanol.  The solution may be obtained by dissolving penicillin or a salt thereof in the liquid, or it may be obtained by the treatment of the culture medium or it may be the culture medium itself.  The stabilized solution may be concentrated or evaporated to dryness under reduced pressure, and penicillin or its salt may be crystallized therefrom.  Examples show the use of various stabilizers and their efficacy in the presence of various concentrations of metals.
Patent GB-1016548-A (GB)
Title: Improvements in the production of bipyridyls
Inventor: BRADBURY FRANK RAYMOND
IPC: C07D213/22
Filed: 1962-09-10
Abstract: Bipyridyls are produced by treating a metal-pyridine interaction product with a nitroalkane. The interaction product may be derived from sodium, magnesium or aluminium and pyridine itself.  The nitroalkane preferably containing not more than four carbon atoms per molecule is used in proportions sufficient to provide at least 0.5 molecular equivalents for each equivalent of metal in the interaction product.
Patent GB-1473288-A (GB)
Title: Thermal printing apparatus
IPC: B41J2/315
Filed: 1975-08-20
Abstract: 1473288 Selective printing NCR CORP 20 Aug 1975 [16 Sept 1974] 34596/75 Heading B6F A thermographic printer includes a plurality of hot gas jets 26 directed on to a thermosensitive medium 50. Associated with each jet 26 is a cantilevered element 30 carrying a gas jet deflector 28 which can be flexed to selectively expose the medium 50 to its jet. The element 30 may be a bimetallic strip or includes a bimorph piezoelectric element which flexes when a voltage is applied across it. The gas is supplied via duct 11 from a source 10 and each jet heated by an element 15.
Patent GB-605390-A (GB)
Title: Improvements in ignition coils for internal combustion engines
IPC: H01F38/12
Filed: 1945-12-21
Abstract: 605,390. Induction coils. BANKS (LONDON), Ltd., and REDFERN, G. J. Dec. 21, 1945, No. 34673. [Class 38 (ii)] An ignition coil for use with internal-combustion engines, comprises a core of soft iron wires surrounded by a primary winding about which is arranged the secondary winding in a number of sections on individual bobbins 14. Insulating tubes may separate the windings and core and enclose the whole; the adjacent sections of the secondary winding may be connected by cross-over connections, or by inner to inner and outer to outer end connections; and the end bobbins may carry fewer turns than the remainder.
Patent GB-827598-A (GB)
Title: Improvements in loading and ditching appliances for use on tractor vehicles
IPC: B66C23/44
Filed: 1955-12-05
Abstract: 827,598. Jib cranes for mounting on agricultural tractors. SMITH, J. J. Dec. 5, 1955 [Feb. 4, 1955], No. 34768/55. Class 78 (4). The boom 7 of a jib crane can be mounted for slewing behind the rear axle 2 of a tractor while the load cable 26 passes over a jib end pulley 23 and a pulley 24, carried by a swivel 25 spaced laterally from the boom 7 behind the tractor axle, to be payed in and out by the normal liftarms on the tractor. As illustrated the hoist rope 26 is drawn in by a purchase 27, 28 operated by one of the hydraulic lift-arms 6 of the tractor. The same hydraulic lift-arm 6 is also connected by a link 21 and a pin-and-slot connection to a crank 22 on the boom 7 so that the jib 8 is slewed to extend laterally on the tractor after the hoist rope 26 has been pulled in. Slewing pivots to the boom 7 are carried by the draw-bar 11 of the tractor and by brackets 13 carried by a framework 13a connected by links 14, 15 to the rear axle housing. The boom may be biased to slew to a chosen position by inclining its slewing pivots. The tines 29 of the grab shown supported by the crane are biased to their open position by springs 33 and are closed by an hydraulic cylinder 32 provided with pressure fluid through a hose 34 from a valve 35 which may be connected either to an exhaust connection 37 or to a hose 36 leading to the supply for the ram 4 operating the hydraulic lift arms 6. When the grab is to be closed without dragging the hoisting rope 26 one of the lift arms 6 is locked against movement by a chain connecting it to the tractor rear axle.