baber/WOPTO huggingface dataset:
Patent GB-725874-A (GB)
Title: Improved ophthalmic measuring device
IPC: A61B3/04
Filed: 1953-05-20
Abstract: 725,874. Ophthalmic apparatus. BELGARD, A. B. May 20, 1953, No. 14233/53. Class 97 (1) An ophthalmic measuring device for attachment to spectacles or spectacle frames comprises a housing, a pair of carriers slidably arranged thereon each carrying a depending slide provided with a scale for alignment with the pupil of one -eye, and a pair of posts depending from the housing between said carriers, at least one of the posts being movable, independently of the carriers towards and away from the other post. As shown, the apparatus comprises a tubular member 10, Fig. 1, having a slot 12 from which projects a portion 13 of a slide carrying scales 14 and also supporting, within the housing gear 17, Fig. 10, pivoted at 16 to the slide and engaging on one side teeth 18 fixed to the member 10 and, on the other, teeth 20 carried by a member 19 slidable longitudinally in the tube 10 and normally pressed by a spring 43 against an adjustable stop 44. Attached to the slide 19 is a finger grip 21 and a depending member 25 carrying an inturned point 27 for engaging the inside of a lens rim and a pin 31 for alternative engagement with the rim 29 when this latter is occupied by a lens. A post 24 is fixed to the tube 10 and has similar members 27, 31 for engaging the other rim 29. Sliding on the tube 10 are carriers 32 moving against the scales 14 and having at the rear vertical guides in which measuring slides 39 may move. In operation the grip 21 is moved laterally to space the posts 24, 25 apart, a grip 23 fixed to the tube 10 being provided to facilitate this operation, and the points 27 are brought into engagement with the inner portions of the rims 29 of the spectacle frame. If the latter has lenses the apparatus is held thereon by clamps 46, 47, Fig. 1, and the pin 31, Fig. 11, brought into engagement with the lens rim or members on the posts 24, 25 brought into engagement with the screws holding the lenses in the rims. This lateral adjustment of the post 25 relative to the post 24 produces, through the gears 17, a corresponding lateral movement of the slide 13. When so adjusted, a scale 55, Fig. 1, indicates the distance between the lens rims, the carriers 32 may be adjusted laterally until the slides 42 are opposite the eyes of the wearer when the distances of the eyes from the centre of the nose may be read from the scales 14 whilst scales on the slides 39 permit measurement of any vertical distance between the eyes. An enlarged portion 42 of the slide 39 may be used to indicate the width of vision of the wearer.
Patent GB-735801-A (GB)
Title: Improvements relating to fluid seals
Inventor: WILSON MARTIN WESTBURY
IPC: F16L23/22
Filed: 1953-05-22
Abstract: 735,801. Stuffing-box substitutes; jointmaking packing. ROLLS-ROYCE, Ltd. May 21, 1954 [May 22, 1953], No. 14526/53. Classes 122 (3) and 122 (5). A sealing element adapted to be compressed axially and/or radially between the parts to be sealed comprises an inner metal core of a resiliently deformable nature wholly or partly covered by an outer covering formed of a polymer of tetrafluoroethylone. The inner core may be completely enclosed by a covering of polytetrafluoroethylene moulded thereon. In one form, Fig. 2, a helical coil metal spring 20 is inserted in a U-section covering 21 of polytetrafluoroethylene. Alternatively, the spring 20 may be replaced by a V-section ring of resilient metal. In another form, Fig. 3 (not shown), the inner core comprises an inner helical spring partly enclosed in a U -section deformable metal ring having an outer covering of polytetrafluoroethylene. In the Provisional Specification it is stated that the inner core may be of synthetic rubber.
Patent GB-378865-A (GB)
Title: Improvements in or relating to the production of alcohols from olefines
IPC: C07C29/04
Filed: 1931-05-16
Abstract: A mixture of 62 parts boric acid and 200 parts of 50 per cent phosphoric acid is evaporated to dryness.  The product, boron phosphate, is freed from acid by heating to 400 DEG  C. in a current of steam until the exit vapour gives no acid reaction to bromthymol-blue.ALSO:Olefines are hydrated catalytically in the liquid or vapour phase, boron phosphate being employed as catalyst. Suitable temperatures are between 150-300 DEG  C., and elevated pressures are preferred.  In the liquid phase operation, the olefine may be compressed to about 100 atmospheres and brought into contact with an aqueous suspension of boron phosphate.  In the vapour phase, it is preferred to use a large excess of olefine relative to water vapour, the reaction products being cooled to separate aqueous alcohol and the surplus olefine being recirculated.  The catalyst may be prepared by evaporating to dryness a mixture of phosphoric and boric acids, and is preferably purified from free acid, e.g. by heating at 400 DEG  C. in a current of steam.  The examples illustrate the production of isopropyl alcohol from equimolecular proportions of propylene and steam, of ethyl and isopropyl alcohols, together with some oil and a little acetaldehyde from a mixture of 4 parts of crude oil cracking gas and 1 part of steam, and of ethyl alcohol from steam and excess of ethylene.
Patent GB-688376-A (GB)
Title: Improvements in alternating current electric arc welding systems
IPC: B23K9/10
Filed: 1949-05-31
Abstract: 688,376. Supply systems for welding arcs. FOSTER TRANSFORMERS & SWITCHGEAR, Ltd., and JENNINGS, R. E. May 30, 1950 [May 31, 1949; Nov. 8, 1949], Nos. 14565/49 and 28562/49. Class 38 (iv). A system for automatically disconnecting a welding electrode E from the secondary of a welding transformer T when the operator breaks the arc, whilst providing for automatic reconnection to the transformer when the electrode is again brought into the striking position, comprises a step-down transformer T1 connected across the secondary of the welding transformer and supplying under non-welding conditions a low voltage to the electrode over contacts r2 of a relay R and the primary winding of current transformer CT. Normally open contacts r1 of the relay isolate the electrode from the welding transformer. If the electrode is now brought into contact with the work, to initiate an arc, the current transformer is energized from transformer T1 and actuates the relay which changes over contacts r1, r2 and holds in due to the flow of welding current through the current transformer. Several modifications are described. The relay may be as described in Specification 688,458, [Group XXXVII].
Patent GB-1010043-A (GB)
Title: Improved organic thermoplastic material and process for its manufacture
IPC: B29C48/05
Filed: 1964-04-08
Abstract: A composition comprises an intimate and uniform mixture of a powdered organic thermoplastic material the size of the particles of which in absolute value does not exceed 0.25 mm. with 0.5 to 75% and preferably 15 to 40% of its weight of a mineral material such as: glass, quartz, ceramic, or asbestos, in the form of fibres with a length of 0.1 to 30 mm. and having a section of any desired form which is inscribed in a circle with a diameter between 0.1 and 50 microns.  The preferred mineral fibres are glass fibres which may be oiled with chromium chloromethacrylate or de-oiled with benzene before use.  Other fibres exemplified are asbestos and ceramic aluminium silicate fibres.  Organic thermoplastic materials exemplified are low pressure and high pressure polyethylenes; polypropylene; polystyrene; polytetrafluoroethylene; polyamides produced by the polycondensation of (1) 11-aminoundecanoic acid; (2) adipic acid and hexamethylene diamine, or (3) caprolactam; polycarbonate; polyacetal; and cellulose acetobutyrate.  Of the conventional additives that may be incorporated titanium dioxide, cadmium sulphide, molybdenum disulphide, and graphite are exemplified. The composition may be extruded and cut into granules prior to moulding by conventional techniques.
Patent GB-1179045-A (GB)
Title: Water-in-Oil Emulsion
Inventor: SCHABES JOHANNES
Filed: 1967-03-30
Abstract: 1,179,045. Water in oil emulsions. WISSENSCHAFTLICH TECHNISCHES ZENTRUM AUSRUSTUNGEN FUR DIE SCHWERINDUSTRIE UND GETRIEBEBAU, VEB. 30 March, 1967, No. 14588/67. Heading C5F. A lubricant for plastics composition bearings is made by stirring water into a mineral oil, e.g. spindle oil, or a polyester lubricant, containing an antifoaming agent and up to 0À3 wt. per cent of graphite based on the total weight of the emulsion. The weight of water is approximately equal to that of the oil or polyester. The emulsion has a pH of 7-8, a viscosity of 6-10 cp. at 50‹ C. and a break point below - 20‹ C.
Patent GB-146005-A (GB)
Abstract: 146,005. Kilrow, A. Sept. 4, 1910. Grant of Patent refused. Engaged indicators.- An ' engaged ' indicator for theatre and like seats comprises a clip adapted to be attached to the top of the chair and to hold in front thereof a card bearing the word " Reserved." Securing means b for the clip a may be provided either at the back or at the front of the top of the chair, and the clip, which may have a back or base as shown in Fig. 10, may be so arranged that the card c may be inserted either from the top or from the bottom.
Patent GB-287747-A (GB)
Title: Attachable label for marking goods
IPC: G09F3/12
Filed: 1927-05-31
Abstract: 287,747. Schr÷ter, A. May 31, 1927. No Patent granted (Sealing fee not paid). Securing. - Means for attaching a ticket 1 to textile &c. goods comprises U - shaped wires 2, 3 ending in upwardly - directed points 7, and connected together by a loop 6. To attach the device the points 7 are inserted in the cloth, and the sides 4 of the loop 6 bent downwardly to the position shown in Fig. 5.
Patent GB-1412073-A (GB)
Title: Micrometer with movable anvil
IPC: G01B3/18
Filed: 1973-03-27
Abstract: 1412073 Micrometers CENTURY WHEELS Inc 27 March 1973 [27 March 1972 5 Oct 1972 14621/73 Heading G1M A spindle 66, Figs. 2, 12 mounting a gear 86 is moved axially by turning a control knob 94 and a toothed drive sleeve 90 sloppily engaging 86. Wear of the spindle thread 70 is taken up by adjusting the halves of an axially retained split nut arrangement 250, 256 by urging the half 256 upwardly by means of an adjustable coil spring 258. A conventional counter mechanism 210 is driven by the spindle, and spools 293, 295 geared together and rotatable by a knob 316 carry a tape 294 bearing measurement data concerning the type of object, e.g. a particular vehicle brake disc 12, Fig. 1, being measured, which data is presented in a window 320. A magazine 276 containing the tape may be removed for exchange by operating a key 332 to depress locking leg 326 clear from lip 328. The spherically tipped anvil 64 is pivoted on a pin 114 to a supporting arm 48 which is itself pivoted on a pin 142 to the main body of the micrometer. In operation, forward movement of the spindle into abutment with the object to be gauged causes the anvil 64 to be pressed back until contacts 172, 174 are made to light a lamp 170 powered by batteries 190, 192. Slight withdrawal of the spindle to allow the lamp to go out then produces a correct gauging pressure. Should excess gauging pressure be applied the arm 48 will itself pivot about its pin 142 against the action of a spring 148 which is compressed by an abutment 50 fixed to the arm but slidable on a bolt 147.
Patent GB-832822-A (GB)
Title: Improvements in the production of thermoplastic polymeric materials
Inventor: FENDLEY JOHN ATTON
IPC: C08F279/04
Filed: 1957-05-08
Abstract: Graft polymers are prepared by polymerizing 100 parts of a monomeric mixture of 50-90 parts styrene and 10-50 methacrylonitrile in the presence of a stable aqueous dispersion of 20-70 parts of rubbery polybutadiene-1,3.  The butadiene may be polymerized in aqueous emulsion until about 75% has been converted to polymer, the excess monomer removed, e.g. by steam distillation, and the styrene-methacrylonitrile added and polymerized.  Oxygen-yielding catalysts, e.g. hydrogen peroxide, potassium persulphate, or redox catalysts, e.g. cumene hydroperoxide or benzoyl peroxide with a heavy metal salt and sorbose or fructose are preferably present, as may also such polymerization modifiers, e.g. di-(sec.butyl) or di-(2-methyl-butyl) disulphide, dialkyl xanthogen disulphides, nitrodiaryl polysulphides and primary, secondary and tertiary alkyl mercaptans, e.g. dodecyl mercaptan.  The usual emulsifying agents may be present as may pigments, fillers and stabilizers. The products may be shaped or moulded and vulcanized.
Patent GB-455389-A (GB)
Title: Production of new or improved pattern effects upon fabrics
IPC: D03D41/00
Filed: 1935-05-20
Abstract: 455,389. Tensioning warp. LINEN INDUSTRY RESEARCH ASSOCIATION, and BOFFEY, H., Research Institute, Lambeg, Co. Antrim, Northern Ireland. May 20, 1935, No. 14651. [Class 142 (ii)] In mechanism for producing pattern effects by varying the tension in groups of warp thread, which are respectively passed over and under an oscillated bar C, and then between bars A and B (all, or the bar C alone, mounted in a bracket pivoted on the frame of the loom), the oscillating parts are operated by a connecting-rod N, the lower end of which is eccentrically pivoted in a strap M on a disc or drum I, having a ratchet wheel J attached thereto, this being rotated by a pawl O and connecting-rod Q operated by the stay sword R. Instead of the rod N, a cable and chain and a sprocket wheel mounted on the bracket may be used. A pair of rods, C<1> C<2> may be substituted for the bar C, threads not to be affected by the oscillation passing therebetween, or passing over a stationary rod W.
Patent GB-397980-A (GB)
Title: Improvements in and relating to lock and latch mechanism
IPC: E05B41/00
Filed: 1932-05-24
Abstract: 397,980. " Engaged " indicators. KAYE, J. V. and COOPER, S., Lock Works, Hunslet, Leeds. May 24, 1932, No. 14667. [Class 118 (i).] In a door fastening provided with an " engaged " indicator a slidable member handoperable from inside the door has a stud which serves to lock the latch bolt against handoperation from outside and at the same time operates the indicator, the locking means and indicator being operable from outside by means of a key. The bolt B mounted in a mortise casing C, is shot by a spring S and is retracted by handles on a spindle A. A knob-operated slider D2 mounted in a separate casing Dx on the inner face of the door has a stud D passing through slots in casing C into engagement with an indicator plate G<2> vertically movable in a casing G on the outer face of the door and provided with a sight-opening G<1>. Plate G<2> falls under gravity and is raised by stud D co-operating with a cam edge G<3> on the plate. Stud D fits an aperture in a member L slidable in casing C and passes freely through a slot B<3> in bolt B. Member L is gated at its lower edge L<3> to co-operate with a key inserted through registering key-holes K<1>, K in cases G, C respectively. When member L is moved to the left, Fig. 1, by hand from inside or by key from outside its projecting corner L<4> tilts a cranked spring-biased lever F causing the end of its lower limb to engage a recess B<7> in the bolt, locking it against hand-operation, plate G being simultaneously raised to " engaged" position.
Patent GB-1492753-A (GB)
Title: Coating powders
IPC: C09D7/47
Filed: 1974-04-02
Abstract: 1492753 Coated particles DOW CORNING Ltd 25 March 1975 [2 April 1974] 14672/74 Heading CIA [Also in Division C3] Inorganic powders, useful in powder coating compositions, are coated with organosiloxaneoxyalkylene block copolymers. Examples relate to the coating of calcium silicate, barium sulphate and titania. Silica, magnesium silicate, calcium carbonate, barium oxide, zinc oxide and alumina are also specified. The block copolymer may have an organosiloxane content of 15-70% by wt. At least 90% of the Si-bonded organic groups, other than the oxyalkylene groups, may be methyl groups. The powders may have a particle size of 0À01-5 microns.
Patent GB-948702-A (GB)
Title: Improvements in or relating to conveying machines
Inventor: FLEUR ROGER LA
IPC: B60P1/40
Filed: 1962-04-17
Abstract: 948,702. Screw conveyer unloading vehicles. RENNER CO. April 17, 1962, No. 14773/62. Headings B8A and B8E. A conveying machine adapted to be detachably connected to and hauled by a truck 10, having a tailgate 11, for unloading it and for depositing the contents at the curb side, comprises a framework 14, 15 supporting an inclined screw conveyer which is enclosed in a trough member 17 and vertically extending side members 30, 31. The apparatus is detachably secured to the truck 10 as by hooks 12 and cables 13. The screw conveyer is driven by an internal combustion engine 23 through a gear-box 26 and a clutch 25 which latter is controlled by spaced levers 56. The conveyer extends laterally of the truck body where it is supported in a bearing 28 adjacent a delivery portion 16. Adjustable legs 19, 20 are provided to support the apparatus at the desired inclination and while it is detached from one vehicle prior to its attachment to another.
Patent GB-221272-A (GB)
Title: Envelopes and the like
IPC: B65D27/00
Filed: 1923-06-06
Abstract: 221,272. Gillet, P. June 6, 1923. Envelopes. - In envelopes &c. of the kind wherein a lining bearing concealed advertising or other matter is provided with a tongue or tab to direct attention to its presence when the envelope is opened, the lining 4, Fig. 1, has an extension at one end attached to the gummed sealing-flap, so that after the envelope has been opened by cutting or tearing along the fold 6 of the flap, the lining may be withdrawn by pulling upon the tab 5. The lining consists of thin and preferably coloured paper, and when its length exceeds the depth of the envelope its free end is folded beneath its main portion to lie adjacent to the front of the envelope, the advertising matter being on the unexposed side of the lining. The tab 5, conveniently made of coloured tape, is adhesively secured to the hidden side of the lining at a point below the fold line, with its free end between the sealing-flap and the extension of the lining. The tab offers less resistance to being withdrawn than it does to being cut, and consequently projects beyond the open end of the envelope when the flap is cut or torn. In a modification, Fig. 6, means are provided for withdrawing the letter or enclosure together with the lining 4 by attaching to the lining one end of a thin paper flap 7, the other end of which is attached to the flap 3 which forms the back of the envelope when the blank is folded. The flap 7 forms a lining for the back of the envelope, so that a letter inserted in the usual way is located between the withdrawable lining 4 and the flap 7.
Patent GB-562882-A (GB)
Title: Improvements in or relating to plaster casts or moulds
IPC: A61K6/027
Filed: 1942-10-23
Abstract: Plaster casts, particularly for moulding dentures of acrylic resin are made from plaster of Paris, or stone plaster &c. to which has been added an alkali thiosulphate or polythiosulphate, which decomposes in curing the resin to make the casts readily frangible and thus facilitate separation of the denture.
Patent GB-544056-A (GB)
Title: Improvements in or relating to step-by-step mechanism
IPC: G06C23/02
Filed: 1940-10-04
Abstract: 544,056. Bomb sights. PULLIN & CO., Ltd., R. B., and SLINN, W. H. Oct. 4, 1940, No. 14891. [Class 92 (ii)] [Also in Group XXIV] Relates to means for providing a step-by-step movement with a cessation of motion between consecutive steps, applicable to electrical controlling gear, computing or calculating machines and particularly for locating definite positions on a height scale of a bomb sight. The relatively movable members are a stationary vertical pillar 1 and a frame 2 having bearings whereby it can slide over the pillar which is formed with a number of circumferential notches such as 3a, 3b the lower faces of which provide stops 3c, 3d to be engaged by detents 4, 5 respectively pivoted at 6, 7 to the frame 2. In Fig. 1, the frame is being held by the toe 4a of detent 4 engaging the stop 3c, the detent being loaded by a spring 8. The second detent 5 is idle because, although its toe 5a projects into the notch 3a, the toe lies slightly above the stop 3c. This detent is urged counter-clockwise by a spring 9. To cause the frame to slide to the next position, i.e, the stop 3d, a finger lever 10 is depressed to the position shown in Fig. 3. It thus passes through a position in which a cam 12 on the lever acts on the detent 4 to withdraw the toe 4a from the notch 3a. The frame then moves downwards but is almost immediately stopped by the engagement of toe 5a with the stop 3c, the detent 5 moving slightly counter-clockwise under the action of spring 9 to bring the tip of arm 5b up into the path of the tip of projection 4b, as in Fig. 2. In moving the lever 10 from the position in Fig. 2, to that in Fig. 3, a pin 13 on cam 12 swings detent 5 clockwise to release toe 5a from stop 3c. Both detents being now clear of the notch, the frame is free to slide downwards until detent 4 engages stop 3d under the action of spring 8. When lever 10 is returned to its uppermost position, it does not move detent 4 because the cam 12 engages an abutment 4c on the detent and is caused to swing about its pivot 14 against a light spring 15. With the shape of grooves shown the frame can be raised freely, but by shaping the grooves with a stop surface at each end a step-by-step movement in the return direction can be obtained.
Patent GB-596411-A (GB)
Title: Improvements in or relating to electric inductors
IPC: H04M1/02
Filed: 1945-06-12
Abstract: Two oppositely disposed cup-shaped parts of magnetic material enclosing an inductance coil are secured together by passing axially therethrough a tube of thermoplastic material such as polystyrene and flanging the opposite ends of the tube on to the adjacent surfaces. Flanging is effected by inserting heated metal plungers into the opposite ends of the tube and pressing them together, the plungers having flanged portions or collars which determine the shape of the flanges on the thermoplastic tube.  In a modification, one end flange is preformed on the tube by moulding.
Patent GB-1183593-A (GB)
Title: Sweetening Composition and Method of Producing the Same
Inventor: BRAATEN WILLARD C
IPC: A23L27/30
Filed: 1967-03-31
Abstract: 1,183,593. Sugar substitute. ALBERTOCULVER CO. 31 March, 1967, No. 14919/67. Heading A2B. A crystalline-appearing sweetening composition suitable for use as a sugar substitute is prepared by forming an aqueous solution of a starch hydrolysate, preferably the corn syrup solid known as malts-dextrin having a dextrose equivalent of 13-28 per cent, and a minor amount of an artificial sweetener selected from salts of cyclohexyl sulphamic acid (cyclamates) and saccharin, vacuum drying the solution, which may optionally first have been frozen into a solid cake, to produce a dry cellular material, and particulating to produce particles of irregular shape having the appearance and flowability of granulated sucrose, additives, such as gum acacia, gelatin, conventional starilisus, and preservatives, may be added to the solution prior to drying.