baber/WOPTO huggingface dataset:
Patent GB-1363492-A (GB)
Title: Dial ass'm'l' ''' a machine tool
IPC: B23Q17/22
Filed: 1971-07-26
Abstract: 1363492 English/metric indicating devices M WORDEN 26 July 1971 [28 June 1971] 30159/71 Heading B3B A dial assembly for a machine tool for indicating the feed of moving parts of the tool comprises a dial 16 calibrated in one set of units on which is mounted a collar 28 calibrated in a different set of units, the collar being rotatable relative to the dial but having friction means to permit the dial and collar to rotate together except when sufficient force is applied to the collar to overcome the friction means; a cursor 24 is mountable on a stationary part of the machine and extends simultaneously across sets of units on the dial and collar respectively. The collar 28 is split diametrically to permit its location in an annular groove 26 on the dial, radially inwardly acting spring biased pressure pads 44 being provided in the collar which engage the bottom of the groove 26 and which constitute the friction means. In operation the collar is manually "zeroed" after each rotation of a hand wheel which carries the dial so as to effect continuous readings when using the units on the collar. In the embodiment described the dial and collar are calibrated in English and metric units respectively.
Patent GB-736575-A (GB)
Title: Band brakes
IPC: F16D49/08
Filed: 1953-11-02
Abstract: 736,575. Band brakes. TAYLOR, H. G. Sept. 30, 1954 [Nov. 2, 1953], No. 30162/53. Class 103 (1). In a band brake mechanism of the kind in which a band brake is caused to bear on a revolvable brake drum by means of an operating lever which carries a weight and which normally maintains the brake band in frictional engagement with the drum and requires to be raised in order to free the brake drum for rotation, the brake band operating lever comprises two lever parts 10, 11 pivotally connected together at 15 and permitted a small angular movement in a vertical plane as governed by the abutment faces 18 and 17 on lever part 11 and abutment face 16 on lever part 10, one lever part 10 being fulcrummed near the brake drum at 12 and the other lever part 11 carrying a counterweight 13 at the end remote from the pivotal connection 15. Any snatch or kick of the brake band upon the brake drum is transmitted through abutment faces 17, 16 in contact to the weighted part 11 of the lever which will then be thrown upwardly until the abutment faces 18, 16 forcibly engage (Fig. 4) thus counteracting the upward kick causing the weighted lever part 11 to fall rapidly until abutment faces 17, 16 are engaged. This action damps down the kick and ensures positive application of the brake band.
Patent GB-305711-A (GB)
Title: Improvements in and relating to emulsifiers, mixers and the like
IPC: B01F7/16
Filed: 1927-11-10
Abstract: 305,711. Snow, C. S. H. Nov. 10, 1927. Mixers with circulating-d,;vices.-An emulsifying or mixing-apparatus comprises a rotating head or impeller, which throws the material outwards in the form of a thin film, and in a sinuous path, through the constricted space between rims on the head and fixed enclosing annular members having corresponding circular grooves and depressions, means being provided for directing the material into the centre of the head, and for breaking up the flow as it leaves the constriction. The container a, preferably of glass, is mounted on a base b fitted with spring uprights d which clamp the cover c on to the container. The head is mounted on a shaft e driven by a motor or hand gear mounted on the cover, and comprises vanes f<1> fitting inside a double conical member f<2> having outwardly directed flanges f<3> with circumferential grooves. The head rides between two discs g which are supported by hanging members g<1> from the cover, are separated by a ring of gauze or perforated metal h, and are furnished with grooves mating with the grooves on the head leaving a small clearance; the discs are also provided with radial grooves, and with baffle rings k. Deflector rings i are also provided to deflect the material into the centre of the head. The shaft e is enclosed in a depending sleeve c<2> fitted with apertured discs l, l<1>, one of which is rotatable by a handle l<3>, whereby a regulated supply of air is provided which is sucked into the head.
Patent GB-718489-A (GB)
Title: Improvements relating to isocytosine derivatives
IPC: C07D239/46
Filed: 1951-10-29
Abstract: The invention comprises isocytosine derivatives of the formula <FORM:0718489/IV (b)/1> where R and R1 are methyl and ethyl.  These are made by reacting a 2-amino-4-halo-pyrimidine with the alkali metal derivative of the corresponding dialkylamino-propanol, preferably in an inert organic solvent at a raised temperature, but not above 80 DEG  C.  The cooled reaction mixture is treated with aqueous alkali to hydrolyse any unreacted metal alcoholate and the product recovered from the organic solvent solution.  An example is given of the preparation of 2 - amino - 4 - (g  - diethylaminopropoxy) - pyrimidine (using xylene as solvent) and conversion into its succinate salt.  The products have blood pressure reducing properties either as free bases or as salts with inorganic or organic acids, e.g. succinic, maleic, tartaric, lactic or fumaric.
Patent GB-1048837-A (GB)
Title: Improvements in or relating to xerographic plates
IPC: G03G5/14
Filed: 1963-07-31
Abstract: 1,048,837. Electrophotographic materials. RANK XEROX Ltd. July 31, 1963 [Aug. 1, 1962], No. 30345/63. Heading H1K. An electrophotographic plate has a support, the insulating surface of which bears a layer of a narrow band gap photo-conductor upon which is a thicker layer of a large band gap photoconductor. The layer of narrow band gap photoconductor is made sufficiently thin that it can support an electrostatic field in the dark in spite of thermally generated carriers. In one embodiment a transparent glass-tin oxide electrode bears in succession a layer of silicone resin, a layer of selenium-tellurium alloy (40% Se, #E# 1À7 eV), and a vacuum evaporated layer of vitreous selenium (#E# 2À3 eV). The plate has a substantially uniform spectral response extending from 6500 Š and may be used with either positive or negative charging. In another embodiment the alloy layer is omitted and the selenium layer deposited directly on to the silicone resin, the temperature of the electrode/resin substrate being held at 59‹ C. during the deposition. It is believed that this temperature is just high enough for a very thin layer of crystalline selenium (#E small) to be formed at the resin/selenium interface. In further similar embodiments the layer of silicone resin is replaced by a layer of magnesium oxide which may be formed by the thermal decomposition of magnesium methoxide applied the support in methanolic solution. It is stated that the plates with silicone resin layers show their highest blue sensitivity when positively charged whereas those with magnesium oxide show their highest blue sensitivity when negatively charged. It is believed that this is connected with the formation of an electric dipole layer at these insulating layers.
Patent GB-772811-A (GB)
Title: Improvements in or relating to traps for small animals
Inventor: EVANS RICHARD HENRY
IPC: A01M23/30
Filed: 1954-10-21
Abstract: 772,811. Animal traps. SELFSET, Ltd. Jan. 20, 1954 [Oct. 21, 1954], No. 30355/54. Class 5(1). An animal trap comprises a jaw 15 pivotally mounted on a base 10 and a setting member 16 which may either be integral with the jaw as in Fig. 1, or else is pivotally mounted on the base and has a lug engaging under the jaw, both arrangements being such that depression of the setting member towards the base 10 causes the jaw to be lifted to its " set " position. Also pivotally mounted on the base are a bait-holding member 20 and a latch member 26, the latter extending through a slot in the setting member. As the setting member is depressed towards the base, the latching member is guided into engagement with a hole 28 in the bait-holding member thus " setting " the trap, the latter being released by an animal exerting pressure on the bait-holding member 20. The invention may be modified by substituting a trip plate for the bait-holding member. Specification 668,634 is referred to.
Patent GB-1126491-A (GB)
Title: Sugarcane processing and apparatus
IPC: C13B10/02
Filed: 1965-07-19
Abstract: 1,126,491. Absorbent carbon. R. B. MILLER. 19 July, 1965 [22 July, 1964], No. 30497/65. Heading C1A. [Also in Divisions C5, C6, D1 and D2] Decolorizing carbon can be made from absorbent floe obtained from pith, which has been separated from sugar-canes and treated to remove sugar juice (see Division C6).
Patent GB-985773-A (GB)
Title: Improvements in or relating to coated medicinals
IPC: A61K9/28
Filed: 1961-08-24
Abstract: A solid medicinal dosage form is protected by a coating consisting essentially of from about 50 to about 95% w./w. of methyl cellulose and from about 5 to about 50% w./w. of a polyalkylene glycol having an average molecular weight of from 200 to 9000.  The polyalkylene glycol may be polyethylene glycol or polypropylene glycol.  The coating substances may be dissolved in a volatile solvent, e.g. a mixture of chloroform, methanol and water, and applied to the dosage form, such as a tablet, in a conventional manner.  Optional ingredients are dyes, pigments, flavouring agents, e.g. peppermint oil, sweetening agents, e.g. sodium cyclamate, opacifiers such as titanium dioxide and ferric p  oxide and substances such as vanilla and citrus to provide a pleasant aroma.
Patent GB-813385-A (GB)
Title: Damage protector for objects to be engaged and moved
IPC: B66C1/48
Filed: 1955-10-26
Abstract: 813,385. Load-engaging devices. HEPPEN. STALL CO. Oct. 26, 1955 [June 10, 1955], No. 30620/55. Class 78 (4). A slide device 23, Fig. 1, is fitted to a lifting dog or other load-engaging device to prevent its damaging the load 13 which it handles. As illustrated the slide comprises a bed 35, Fig. 7, secured to the base 15, Fig. 1, of the lifting dog by countersunk screws passed through holes 40, Fig. 7, on which is mounted a slide 39 engaging the load and biased by a spring. The bed 35 is formed with chamfered shoulders 49 over which fits the slide 39 to which are secured liners 55 secured by countersunk screws and formed with grooves for receiving lubricant. The slide 39 is biased by a spring surrounding a rod 54 sliding in suitable lugs or blocks on the bed 35 and on slide 39, or by a pair of springs which bias the slide 39 to a central position. Four such devices are fitted to the base 15 of the dog for lifting coils shown in Fig. 1 but these may be replaced by a single slide device covering the whole of the base.
Patent GB-806331-A (GB)
Title: Improvements in or relating to electro-magnetic damping devices
IPC: H02K49/04
Filed: 1956-10-08
Abstract: 806.331. Eddy-current vibration-dampers. GENESLAY, R. H. J. Oct. 8, 1956 [Oct. 8, 1955], No. 30638/56. Class 108(3) An electro-magnetic device for damping linear movements comprises a hollow elongated housing 9 of magnetic material which is lined with a plurality of first perforated members 20 of magnetic material, and a plurality of second perforated members of a non-magnetic, but electrically conducting, material, the members 20 and 21 being arranged alternately in side-by-side relationship, so that the perforations therein form a duct, in which is movable, a magnet 1 having pole pieces 4, 5. In operation, when the magnet 1 is moved longitudinally of the housing by a spindle 6, eddy currents are produced in the members 21, the effect of which is to act upon the magnet in such a manner as to oppose its movement. The pole pieces 4, 5, are spaced from the inside periphery of the members 20, 21, by means of supporting members 7, 8. The cross-section of themembers 20, 21, may alternatively be trapzium-shaped (Fig. 2, not shown). The periphery of each pole 4, 5, may be formed with two axially spaced annular recesses (Fig. 3, not shown).
Patent GB-982536-A (GB)
Title: Writing implement, in particular a ball-point pen
IPC: B43K24/08
Filed: 1963-08-02
Abstract: 982,536. Retractable ball - point pens. H. BROSS. Aug. 2, 1963 [Aug. 2, 1962], No. 30788/63. Heading B6P. In a retractable ball-point pen, the retracting mechanism comprises an annular guide carried by the pen barrel member or an actuating member movable relative thereto and a projection 2, Fig. 1, carried by the other of such members. The guide has an even number of helical grooves 5 and 6, the closed ends of which are alternately displaced with respect to each other in an axial direction. The arrangement is such that relative axial movement between the actuating member and the pen barrel to project the pen results in a relative rotation between them. Potential energy is stored so that as soon as the projection 2 leaves a groove 5 or 6, the projection 2 moves relative to the guide so that the next groove is engaged by the projection. The rotational energy may be stored in a number of ways. As shown in Fig. 1, a finger 15 engaging the roughened end 16 of the push-button 4 stores the rotational energy. In Fig. 2, the pushbutton 4 is prevented from rotating by the finger engaging the roughened end 19, and the rotational energy is stored in the portion 4<SP>1</SP>. In the tip actuated type of pen, Fig. 7, a helical spring 18 retains the rotational energy to a certain amount before slipping occurs on either of its bearing surfaces 21 or the movable tip portion 25.
Patent GB-1500469-A (GB)
Title: Method of adhering rubber to polyurethane
IPC: C08J7/043
Filed: 1976-07-23
Abstract: 1500469 Adhering polyurethane coatings to rubber GOODYEAR TIRE & RUBBER CO 23 July 1976 [4 Sept 1975] 30834/76 Heading B2E Polyurethane is adhered to rubber by compounding a natural or synthetic rubber with at least 1, e.g. 2-5, parts per hundred of rubber of a hydroxy-terminated polyester, polyether, polynitrile or hydrocarbon of MW less than 7000, and with a sulphur curing agent; curing the rubber; applying a polyurethane coating in the presence of free isocyanate groups; and reacting the polyol with the isocyanate groups. Suitable rubbers are listed, a butadiene-styrene copolymer being used in examples. The polyol may be a hydroxyterminated diene polymer, e.g. butadiene-styrene copolymer or polybutadiene, or polypropylene ether glycol or polybutylene adipate, other polyols are also mentioned. In examples, the source of isocyanate groups is an adhesive polyurethane-triisocyanate mixture which is applied as a solution by painting, and a curable polyurethane solution is then applied by spraying.
Patent GB-603962-A (GB)
Title: Improvements in devices for tensioning intermittently fed photographic films
IPC: G03B1/42
Filed: 1945-11-19
Abstract: 603,962. Photographic roll-film cameras. SPECTO, Ltd., and HOBBS, H. W. Nov. 19, 1945, No. 31010. [Classes 97 (i) and 98 (i)] Means for tensioning a length of photographic film which is fed at intervals through a' camera or projector comprises feed and take-up sprockets between which the film is extended connected to a common driving means with a lost-motion connection interposed in the drive to the take-up sprocket, and spring means tending to rotate that sprocket forwardly relatively to the feed sprocket. As shown, the device is applied to a camera in which a strip film is carried by a continuously rotating drum for exposure at a shutter-controlled aperture and the strip is changed by feeding between spools inside the rotating drum. The film 2 leaves a supply spool (not shown) on the axis of the drum 1 and passes in succession over a supply sprocket 3 and a feed sprocket 4 to the drum exterior, around the drum, re-enters the drum over a take-up sprocket 5 and passes to the take-up spool 7 over a sprocket 6. Pressure rollers mounted on arms 20 keep the film in engagement with the sprockets. An electric motor 8 drives, through intermediate gearing, a pinion 9 to which are geared the supply and feed sprockets 3, 4 and gearing driving the take-up spool 7. The take-up sprocket 5 is driven by a pinion 10 from the piriion 9 coaxial with it through a lost-motion connection comprising springs 11 connecting these two pinions which permit relative rotation between them. The film is tensioned initially by means of a plunger 14 slidable upon the shaft of the sprocket 5 within the sprocket and having a straight slot engaged by a pin on the shaft and a helical slot engaged by a pin on the sprocket. To thread the film the plunger is pulled out, rotating the sprocket 5 backwardly and the film is threaded leaving some slack in it. The plunger is then pressed in, when a spring- pressed ball in it engages in one of a number of concentric grooves on the shaft, the movement of the plunger rotating the take-up sprocket forwardly, removing the slack and tensioning the film and also extending the springs 11. Subsequently when the film is fed the feed sprocket passes film around the drum before each of the projections 9a, 10a on the pinions 9, 10 engages the opposite pinion 10, 9, thus communicating the drive to the take-up sprocket.
Patent GB-668542-A (GB)
Title: Phosphorus-containing lubricating oil additives
IPC: C10M137/10
Filed: 1948-11-30
Abstract: Esters are made by reacting a partial ester of pentaerythritol and a monocarboxylic acid with an inorganic acidic compound of phosphorus. The monocarboxylic acid is preferably an aliphatic acid of 6-30 carbon atoms, e.g. oleic, stearic, lauric, or their homologues or tall oil acids.  The phosphorus compound may be POCl3, PCl5, P2O5, PSCl3, P2S5, P4S7 or P2O3.  A monohydric alcohol, preferably of 1-30 carbon atoms may also be employed in the reaction.  Where HCl is released in the reaction, a neutralizing agent such as pyridine may be present.  The polyesters formed may be monomeric or polymeric and may contain unesterified hydroxyl groups.  Where phosphorus sulphides are used, thiophosphoric or thiophosphorous acid esters are obtained. Temperature is generally 0-150 DEG  C. and acid catalysts may be employed.  The products may be converted to metal salts and used as such or further reacted, e.g. with acid chlorides, anhydrides, halides, chlor-ethers or esters.  They are used as oil additives. In examples, POCl3 is added to a mixture of pentaerythritol mono-oleate, C8Oxo alcohol, benzene, and pyridine and the ester obtained tested in lubricating oils to show its rust-inhibiting, anti-wear and film strength properties. Specification 452,508 is referred to.ALSO:Esters for use as lubricants are made by reacting a partial ester of pentaerythritol and a monocarboxylic acid with an inorganic acidic compound of phosphorus.  The monocarboxylic acid is preferably an aliphatic acid of 6-30 carbon atoms, e.g. oleic, stearic, lauric or their homologues or tall oil acids.  The phosphorus compound may be POCl3, PCl5, P2O5, PSCl3, P2S5, P4S7 or P2O3.  A monohydric alcohol, preferably of 1-30 carbon atoms may also be employed in the reaction. The polyesters formed may be monomeric or polymeric and may contain unesterified hydroxyl groups.  Where phosphorus sulphides are used, thiophosphoric or thiophosphorous acid esters are obtained.  The products may be converted to metal salts and used as such or further reacted, e.g. with acid chlorides, anhydrides, halides, chor-ethers or esters.  They are used as oil additives, anti-wear agents, extreme pressure additives, rust and other corrosion inhibitors, pour point depressors, viscosity index improvers, and detergents.  They may be blended with base, preferably mineral, oils in amounts of .01-10 per cent, marketed as concentrates of 50 per cent or more, or blended with petrolatums, greases or synthetic lubricants.  In examples, POCl3 is added to a mixture of pentaerythritol mono-oleate, C8 Oxo alcohol, benzene, and pyridine and the ester obtained tested in lubricating oils to show its rust-inhibiting, anti-wear and film strength properties.
Patent GB-1476725-A (GB)
Title: Method for feeding electrical connector clips
IPC: H01R43/045
Filed: 1974-07-01
Abstract: 1476725 Jointing by stamping POST OFFICE 1 July 1974 [29 June 1973] 31040/73 Heading B3Q A strip of electrical connector clips coupled flexibly and with slits between respective ends of adjacent clips is fed across an arcuate surface to open up a slit, a feed device is engaged in the slit and advances the strip which is held to prevent its retraction while the feed device is moved to a new point of engagement. As shown, Fig. 1, a strip of channel-section connectors joined to adjacent connectors only at their bases is fed along an arcuate guide 28 by a feed pawl 38 with fingers 42 for engaging notches between adjacent connectors. The pawl is mounted on an arm 36 fixed to a rotatable shaft 34 and its free end is urged towards the guideway 28 by a spring 40. Also fixed to the shaft 34 is an arm 45 which carries a cam face 46 engageable with a cam face 48 on a member 18, hydraulically actuated to operate the crimping jaws 10, to release the pawl from the strip at the end of a feed stroke. As the member 18 moves upwards it urges a spring-loaded pin 52 into engagement with the second clip of the strip. Conductors to be crimped into a clip lie in channels 24 on both sides of the crimping jaws 10. A plunger 20 resting on the member 18 then ruptures the joint between the first and second clips and raises the first clip to the level of the jaws 10 to embrace the conductors. A blade 26 carried by each jaw trims the surplus ends of the conductors. Finally the sides of the clip are folded inwards on to the conductors, driving spikes on a phosphor bronze clip liner into electrical contact with the conductors. Displacement of the arm 45 during upward movement of the member 18 has released the pawl from the strip notch between the second and third clips and moved it back to the next notch. Downward retraction of the member 18 after crimping lowers the cam face 48 and causes the pawl to engage the strip between the third and fourth clips and feed another clip on to the plunger 20. A microswitch 60 actuated when the strip is coming to an end stops the machine until a fresh cassette (32) of strips is mounted in a magazine (30), Fig. 6 (not shown). In a further embodiment, Fig. 7 (not shown), the guideway 28 is partly covered and the feed pawl acts only on one side of the clips. An alternative, normally closed microswitch 60 for detecting the arrival of the end of a strip stops the machine when connectors cease to depress a spring (64), Fig. 8 (not shown).
Patent GB-341113-A (GB)
Title: Improvements in the manufacture of articles hardened in their marginal layers by nitrogenization
IPC: C23C8/00
Filed: 1929-10-15
Abstract: Nitrogenized steel articles are made from steel alloys containing less than 0,5 per cent of aluminium, for example 0,2-0,4 per cent. The alloys may also contain up to about 1 per cent each of carbon, manganese, and silicon, up to about 2 per cent of chromium or its equivalent, and up to about 0,5 per cent of molybdenum. Specification 243,613, [Class 82 (i), Metals, Extracting &c.], is referred to.  Reference has been directed by the Comptroller to Specification 272,182, [Class 82 (i), Metals, Extracting &c.].