baber/WOPTO huggingface dataset:
Patent GB-1471504-A (GB)
Title: Toughened lenses
IPC: G02B3/00
Filed: 1975-04-07
Abstract: 1471504 Chamfering lenses TOKYO KOGAKU KIKAI KK 7 April 1975 [10 April 1974] 14185/75 Heading B3D A process for the production of toughened lenses comprises chamfering peripheral portions of the lens which has been subjected to chemical tempering treatment and then to edge grinding, the angle of chamfering to the tangential line on the optical surface of the lens at the edge thereof being not greater than 45 degrees. The chemical tempering treatment forms two toughened layers 1, 2 on an intermediate layer 3, the layers 1, 2 having an internal compression stress corresponding to a tensile stress in the layer 3. The edge of the lens is ground to produce a portion 4 for fitting a spectacle frame, the grinding forming small scratches and hair cracks on the surface of the lens. Such scratches and cracks and compressive stress in the peripheral portion of the lens are reduced by forming chambers 5, 6 on the edge of the lens at an angle of less stress 45 degrees to the tangent to the optical surface of the lens at the edge thereof by a polishing treatment using a silicon carbide resin-bond grinding wheel. The chamfer may be curved and in the form of a paraboloid. The chamfering increases the fracture strength of the lens and may be further enhanced by immersing the edge of the lens in an aqueous solution containing 10% hydrofluoric acid and 10% nitric acid for between 5 and 10 minutes or by heat treatment.
Patent GB-112254-A (GB)
Title: Improvements in Railway Rail Sleepers and Rail Fastenings therefor.
Inventor: PETERSON CARL EDWIN
IPC: E01B3/18
Filed: 1917-10-02
Abstract: 112,254. Peterson, C. E. Oct. 2, 1917. Sleepers, metal; chairs securing to sleepers; chair plates.-A metal sleeper for railway rails is formed of a U-section 1 and has a central vertical web 4 secured to the bottom. A plate 6 resting on the top of the sides and central web is secured to the sides by downturned flanges 7 and bolts 8. A sole plate 9, on which the rail 12 rests, is formed with an upturned jaw 10 to engage one rail flange and with a downturned flange 11 which is slotted to engage with the central web. A separate clamping-jaw 14 engages with the other rail flange and is secured through the sole plate and plate 6 by bolts 15.
Patent GB-167031-A (GB)
Title: Improvements in or relating to fire-places or grates
IPC: F24B1/195
Filed: 1920-05-25
Abstract: 167,031. Nicol, E. W. L., and Cartland, A. B. May 25, 1920. Open fire-places; grates.-An open fire-place for burning non-volatile fuel such as anthracite or coke has a closed ash-space e and is provided with vertical air-channels b in the side and back walls, which extend from below the bottom grate c to above the fuel level. The channels are preferably wide and deep, and may be formed by constructing the back of thin slabs, the alternate slabs projecting forward. To retard combustion, air is admitted to the ash-pit through a register device g in the front, the suction effect of the channels on the fuel space being thereby diminished. The front bars d may be removed to form a well-fire. Air-holes may extend from the grooves b into a space behind the back, leading to the chimney. A boiler may be fitted at the back of the grate having ribs corresponding to the channels b. A damper h may be pivotally mounted in the mouth of the adjustable canopy.
Patent GB-138255-A (GB)
Title: Improvements in or relating to ironing machines
IPC: D06F69/02
Filed: 1919-06-06
Abstract: 138,255. Davies, R., and Harris, F. G. June 6, 1919. lroning-machines with endless aprons. -The goods are carried on an endless band i between presser rolls e and heated rollers c, d. The band passes around a driven drum h and the rollers c, d may be driven either by contact with the band or positively at a different speed by gearing which includes a clutch pinion. The articles are fed in at s and delivered by endless tapes or an apron v to a receiving table w. A tension roller x, doffer blade v<2>, and guide-plates t, u are provided. The presser rolls e are carried in sliding blocks mounted on springs and can be lowered by a pedal; the pressure of the springs can be varied by a lever co-operating with a fixed retaining rack.
Patent GB-456881-A (GB)
Title: Improvements in and relating to electrically driven safety razors
IPC: B26B21/38
Filed: 1936-05-21
Abstract: 456,881. Reciprocatory motors. KONSKI, A., 2, Elsastrasse, Friedenau, Berlin. May 21, 1936, No. 14414. Convention date, May 21, 1935. [Class 35] [See also Group XIV] The blade 4 of a safety razor is reciprocated by a swinging rod 5, 6 suspended on a disc 13 inside the coil 7 of an electromagnet using alternating current, the rod extending to the space between the poles of a permanent magnet 11. The rod carries a sleeve 22, a knob 23 on which is pressed into engagement with a central hole in the blade by a spring 21. A rubber buffer is mounted in grooves 18 on the stem 6.
Patent GB-118712-A (GB)
Title: Improvements in Apparatus for Drying Salt.
Inventor: HUTCHINS THOMAS WILLIAM STAINE
IPC: F26B11/04
Filed: 1917-10-05
Abstract: 118,712. Hutchins, T. W. S. Oct. 5, 1917. Rotating conveyers .-Salt is dried in apparatus consisting of a series of superimposed heated cylinders through which it is successively carried by high-speed rotary conveyers. The cylinders a communicate by ports e and are fitted with shafts j carrying slightly inclined blades k. Hot air from a furnace is supplied to the cylinders through a pipe g and escapes through outlets h into a pipe i. Waste gases from the furnace pass into a conduit d and circulate round the cylinders in the casing c. The salt is supplied to the top cylinder and is delivered from the bottom one through the port f.
Patent GB-432312-A (GB)
Title: Improvements in or relating to fumigating devices or the like
IPC: A61M15/00
Filed: 1934-05-14
Abstract: 432,312. Lockets containing medicaments. FELL, J., 87, Bold Street, Liverpool. May 14, 1934, No. 14468. [Class 43] [See also Group VI] A locket is formed in two separable parts 2, 3, one of which is formed with a projection or flange 2<a> providing a socket 4 to receive a sealed capsule 5 containing a volatile medicament, the other part being perforated so that the capsule may be pierced when it is desired to liberate the contents. The capsule may be surrounded by a spreading material, such as kieselguhr or chalk, and covered by an absorbent pad 7 of cotton wool or gauze. The appliance may be modified to contain more than one capsule.
Patent GB-198690-A (GB)
Title: Improvements in combination metal-cutting and like machinetools
IPC: B23Q1/48
Filed: 1923-06-01
Abstract: 198,690. Compagnie ManufacturiÞre Marcalex M. et A. Schwob. June 2,. 1922, [Convention date]. Shaping, milling, and drilling machines.-In a combination machine tool for shaping, surfacing, drilling, grinding, sawing or milling, the work is fixed to a base-plate provided with a vertical column on which various tools with their driving and feeding gear are adjustably mounted. The base-plate 1 carries a rotatable plate 2 provided with a workholding vice 3 and supports a column 5 carrying a sleevemember 6 which is formed integrally with horizontal sleeves 7 connected by a rib through which passes the vertical adjusting screw 10. The sleeve 7 accommodates slidable rods 26, 27 connected to a disc 24 which carries an angularly-adjustable, member 22 provided with a slide 21 which carries a vertically-adjustable tool-shde 19, For shaping, the tool ram is reciprocated by means of a hand lever 28 connected to a member joining the rods 26, 27. Automatic cross-feed of the tool is obtained through ratchet-mechanism operated by a rod 41 provided with stops and sliding in a fixed arm 42, the stops being adjustable to vary the feed. For the power actuation of the shaper the lever 28 is removed and a slotted crank disc driven by a belt T, Fig. 5, and connected by a rod 45 to the shaping ram is fitted in a. bearing bracket 17. For drilling, milling, grinding or sawing the tool-head described above is replaced by the tool-head shown in Figs. 6 and 7. The slide 47 carries a slidable bracket 51. the head of which carries a driving shaft 53 which may be operated by hand or power and which drives through spur gearing a drill spindle 62 a, grinding-wheel M and a metal-cutting saw S. The transverse motion for grinding is obtained by pawl and ratchet mechanism 65 operated through a lever 71 and rod 68 from an adjustable crank disc 69 on the driving shaft. The lever 71 also carries a pawl 74 which may be arranged to operate a shaft 72 connected through bevel gearing to a screw 35 operating the longitudinal feedmotion when required for milling or sawing. To operate the vertical feed for drilling, the crank disc 69 is connected to an arm 79 carrying a pawl engaging a ratchet on a vertical screw 80 which imparts the drill-feed movement to the support 51. An adjustable stop 85 on the slide 47 engages a lever 86 to disengage the drill-feed motion when the required drilling depth is attained. The whole tool mechanism may be angularly adjusted round the column 5,
Patent GB-1469966-A (GB)
Title: Method for transformer coil alignment
IPC: H01F27/38
Filed: 1974-04-02
Abstract: 1469966 Transformers MEIDENSHA KK 2 April 1974 [4 April 1973 7 April 1973] 14496/74 Heading HIT A method of making coincident the electromagnetic median planes of a plurality of windings disposed on an iron core limb of a transformer, such planes being defined as those planes perpendicular to the winding axis on each side of which the ampere turns are equal, the method involving monitoring the differential radial leakage flux between the ends of two electromagnetically coupled windings disposed coaxially on said limb one of which is energized the other being open circuit, and moving one of said windings to reduce the differential flux to zero. As described the radial leakage flux is monitored by a saddle coil 30 and indicator 32 which will give a null indication when the median planes are coplanar. Two symmetrically disposed saddle coils (34a, 34b, Fig. 4, not shown) could be used to give numerically equal readings at the coplanar condition. Alternatively, the voltage difference between individual turns of an auxiliary winding 40 could be utilized. In the embodiment of Fig. 8 an uxiliary winding 40 on which is mounted the saddle coil 30 surrounds the outermost 36 of three windings. The winding 40 may be made from a flexible dielectric plate (42, Fig. 9, not shown) bearing conductive strips (44) that may be of metal foil whose ends are joined by wires (46), connector strips (52, Fig. 11, not shown) or by overlapping (Fig. 10, not shown) to form a regular helical short-circuited winding that, with the saddle coil 30, may be used whenever the radial thickness of coupled windings results in too weak a radial field being presented to the unaided saddle coil 30. The saddle coils 30 (34a, 34b) may be disposed on an inner winding and the spacing S may be varied.
Patent GB-201528-A (GB)
Title: Process for the production of salts of barium and strontium soluble in water from the residues of the manufacture of barium sulphide and strontium sulphide
IPC: C01F11/00
Filed: 1923-06-04
Abstract: Residues obtained in extracting barium or strontium sulphides from the reduced sulphates, are treated with calcium, magnesium, or ferrous salt solutions for extracting the remaining barium or strontium.  The salts mentioned are the chlorides and nitrates, and waste or residual liquors containing the salts may be used. Barium or strontium chloride or nitrate are obtained from the solutions by concentration.  Strontium carbonate is obtained by treating the strontium choride with sodium carbonate.
Patent GB-849758-A (GB)
Title: A hot bulb internal combustion engine and a method of operating the same
IPC: F02B75/02
Filed: 1958-05-08
Abstract: 849,758. Combustion chambers. LICENCIA TALALMANYOKAT ERTEKESITO VALLALAT. May 8, 1958 [May 9, 1957], No. 14734/58. Class 7(3). In a hot bulb engine having a spherical combustion chamber 1 in which the air flows in an arcuate path towards the uncooled surface 2 forming one side of the chamber, the fuel is injected from a nozzle 4, immediately upstream of the surface 2, towards that half of the uncooled surface with which the air first makes contact and reaches that surface following the arcuate path along the chamber wall. The transfer channel 3 into the chamber may be on, or eccentric of, the cylinder axis and its cross-section is preferably between 4.5 and 6 % of the internal surface area of the chamber.
Patent GB-420366-A (GB)
Title: Improvements in or relating to sights for ordnance
IPC: F41G3/22
Filed: 1933-05-22
Abstract: 420,366. Ordnance sights. VICKERS-ARMSTRONGS, Ltd., and LEE, H. W., Broadway, Westminster. May 22, 1933, No. 14798. [Class 92 (ii)] The elevation and deflection corrections for inclined trunnion axis calculated by separate mechanisms X, Z, respectively, are introduced into the gear mechanisms for imparting to the sight the tangent angle of elevation and the deflection angle. In the example shown, the elevation correction mechanism X, adjusted by a hand-wheel Z<6> is that described in Specification 388,456, and the deflection correction mechanism adjusted by a hand-wheel d<2> is that described in Specification 371,903. The movement of the hand-wheel Z<6> is conveyed to the planetary pinions of a differential gear B<3>, one side of which receives the tangent elevation set by a hand-wheel R and range dial r, the other side driving the elevating arc A<7> of the sight T through a second differential gear a<4>. The corrected tangent elevation is by this second gear combined with the angle of elevation imparted to both gun and sight by a hand-wheel a. The movement of the hand-wheel d<2> is conveyed to the planetary pinions of a differential gear M, Fig. 2, one side of which is driven from the deflection handwheel m', the other driving a screw m<5> which moves collars m' and arc A <12> to deflect the sight T about a pivot A<10>.
Patent GB-1176984-A (GB)
Title: Improvements in and relating to Measuring Heads for Weighing Machines
IPC: B07C5/28
Filed: 1967-03-31
Abstract: 1,176,984. Selective signalling. E. KRAUT, [trading as BIZERBA-WERKE WILHELM KRAUT K.G.]. 31 March, 1967 [1 April, 1966], No. 14833/67. Heading G4H. [Also in Division G1] A scale device in a weighing machine has movable with a pointer associated with a directly read scale having plus and minus graduations, a segment 13 (Fig. 2, not shown), having a notched edge movable between light sources and photo-electric cells comprised in light sensitive devices 14, from which pass a particular electrical signal or a particular combination of electrical signals, dependent upon the position of the segment (13) to illuminate a selected one of a plurality of indicating lamps 84 associated with a remote scale having plus and minus graduations 16. The signals are transmitted from the devices 14, through lines 141, 142, 143 including amplifiers (not shown) to relays d1, d2, d3 controlling contact arms in a supply circuit 15 for the lamps 84, the contact arms being shown in full lines in Fig. 3 in the positions they occupy when all the relays are de-energized. The supply circuit 15 may also have output lines L1 to L7 leading to a device 90 for controlling filling or sorting of the material being weighed.
Patent GB-634224-A (GB)
Title: Conveyor for light articles
IPC: B65G15/10
Filed: 1947-06-05
Abstract: 634,224. Endless-belt conveyers. McDONALD, J., and G.W.B. ELECTRIC FURNACES, Ltd. June 5, 1947, No. 14938. [Class 78 (i)] A conveyer, particularly for light articles, of the type comprising a plurality of sections each section consisting of a series of spaced endless strands and adjacent sections being carried on a common drum with the strands of one section interposed between the strands of the next section, is characterised in that at least one section has metallic strands and at least one section has relatively soft non-metallic strands. In the continuous heat treatment of light articles, the articles pass from a loading section A formed of a plurality of leather strands 1 to a heat-resisting section B formed of a plurality of steel wires 2 for conveying the articles through treatment zones C and D and to an unloading section E similar to section A and having leather strands. The strands of adjacent sections are interposed on common drums 6, 7 which are preferably grooved, the main drive being conveniently applied to one of them. Metal strands 2 are kept taut by the tension resulting from the weight of their lower runs 2a. Tables 8, 9 may be provided to support the upper runs of sections A and E, and rollers 10 to support the upper run of section B. It is preferred to use a large number of rather small strands for all three sections, e.g. between thirty and forty strands of 3/16 in. diameter are found suitable for a conveyer four feet wide.
Patent GB-843197-A (GB)
Title: Apparatus for producing porous or homogeneous plastics
IPC: B29B7/80
Filed: 1957-05-10
Abstract: In the apparatus of the parent Specification comprising a mixing head for the liquid components of a synthetic resin, in which the liquids are pressure injected in countercurrent and then submitted to turbulence in a twocompartment chamber, the liquid feed between the pumps and the mixing head is provided with a relief valve which reduces the supply pressure and returns liquids to the pump supply reservoir when the mixing head is cut off.  The accumulation of liquids in the mixing head is thereby prevented.
Patent GB-981502-A (GB)
Title: Method of making contact lenses and lens blanks used therein
IPC: B29D11/00
Filed: 1962-04-18
Abstract: 981,502. Abrading lenses. D. O. ELLIOTT. April 18, 1962, No. 15027/62. Heading B3D. [Also in Division G2] A contact lens is formed from a moulded lens blank with a selected inner concave lens surface and a surrounding flange, by filling the concavity of the blank with filling material 20 which sets in a rigid form, mounting it on a support 22, shaping the convex surface as desired and cutting the flange away from the central lens element by means of a cutting tool 36. A slit 46 (Fig. 5) is then cut in the blank which facilitates removal of the flange leaving the lens which is then polished and the edge bevelled.
Patent GB-1263961-A (GB)
Title: Improvements in polyamides and polyimides
Inventor: HOLUB FRED FRANK
IPC: C07D333/76
Filed: 1969-03-21
Abstract: 1,263,961. Polyimides. GENERAL ELECTRIC CO. 21 March, 1969 [8 May, 1968], No. 15053/69. Headings C3R and C3T. A polymer comprises recurring units of formula (A) or (B):- where R is a benzenoid aromatic radical, each carbonyl group being attached to a separate ring carbon atom and each pair of carbonyl groups being attached to a pair of adjacent carbon atoms, the nitrogen atoms being meta or para to Q, Q is CH 2 , CMe 2 , CPh 2 , O, S, SO 2 , SiMe 2 , CO, NH, NMe or NEt and p is 0 or 1. The polyimide (B) may be prepared by heating the polyamide-acid (A), which may in turn be prepared from the corresponding diamine and tetracarboxylic acid dianhydride in a solvent for at least one reactant. Diamines specified include benzidine cyclic sulphone, 4,4<SP>1</SP>-methylene-3,3<SP>1</SP>- sulphonyl dianiline, 2,8-diaminothiaxanthone dioxide, 2,8-diamine-phenothiazine-5-dioxide, 2,8 - diamino - phenoxathiin - 5 - dioxide, 2,8- thianthrene - diamine - 5,5,10,10 - tetraoxide and a diamine of formula Tetracarboxylic acids specified include pyromellitic acid, benzophenone tetracarboxylic acid, ethylene glycol bis-(trimellitate) and 4,4- N,N<SP>1</SP> - diphenyl - p - phenylene diamine - bistrimellitamide. N-methyl pyrrolidone is used as solvent. In Examples 5 and 6, copolymers are prepared by using as second diamine bis- (4 - aminophenyl) methane or 1,3 - bis - (4- aminobutyl) tetramethyl disiloxane.
Patent GB-714465-A (GB)
Title: Improvements in or relating to pliers
IPC: B25B7/04
Filed: 1952-06-17
Abstract: 714,465. Pliers. EMERSON, E. F. April 27, 1953 [June 17, 1952], No. 15182/52. Class 61 [Also in Group VI] Pliers for bending wire and strip material have detachable jaws provided with shanks F which fit into holes D in the outer end of the jaw carrying arms A, extending towards the hinge E. The shanks are wedged in position each by a captive pin G disposed transversely of the hole D, the pin engaging with a recess J in the side of the shank. By turning the pin about its axis, a recess H in the side of the pin is brought into engagement with the recess J to allow removal of the jaw. Jaws having alternative. forms of complementary parts for bending wire or shaping strip are described.
Patent GB-595387-A (GB)
Title: Improvements in or relating to sealing a conductor through a metal envelope
IPC: H01J5/42
Filed: 1945-06-15
Abstract: 595,387. Metal-to-glass seals. STANDARD TELEPHONES & CABLES, Ltd., and BILLINGS, W. A. June 15, 1945, No. 15249. [Class 36] A conductor 1 is sealed to a portion 3 of a glass tube 5 on which a bulbous portion 4 is then blown into sealing-contact with a metal ring 2. The latter may form part of a surrounding vacuumenvelope. In the form shown a reinforcing metal sleeve 7 is brazed to the conductor at the sealing- zone 3. The seal between the ring 2 and the glass may be of the kind described in Specification 202,047, [Class 36].
Patent GB-656510-A (GB)
Title: Improvements in or relating to plasticized polyvinyl compositions
IPC: C08K5/523
Filed: 1948-01-30
Abstract: Monoalkyl diaryl phosphate esters of the general formula <FORM:0656510/IV (a)/1> where R is a phenyl or cresyl group and R1 is an alkyl group containing at least 6 but not more than 12 carbon atoms or an alkoxyethyl group wherein the alkyl substituent contains at least 4 but not more than 12 carbon atoms, are used as plasticizers for polyvinyl chloride and copolymers of vinyl chloride with vinyl acetate, vinylidine chloride, diethyl maleate, or methyl methacrylate.  20-60 per cent by weight of the esters may be incorporated by milling at 100 DEG  to 170 DEG  C. and rolling into sheets.  Esters specified are dicresyl phosphates having n-hexyl, n-octyl, iso-octyl, lauryl groups, their oxyethyl derivatives and n-nonyloxyethyl; and diphenyl phosphates having 2-methyl pentyl, n-hexyl, n-octyl, 2-ethylhexyl, n-decyl, lauryl groups, their oxyethyl derivatives or butoxyethyl, or alkyl residues from mixed monohydric alcohols derived from coconut oil, of which substantially 60 per cent of the alkyl radicals contain at least 8 and not more than 12 carbon atoms.  Specification 656,471, [Group IV (b)], is referred to.
Patent GB-1057375-A (GB)
Title: Intermittent motion device
IPC: F16H29/02
Filed: 1964-04-13
Abstract: 1,057,375. Gearing elements; cams. MALLORY BATTERIES Ltd. April 13, 1964, No. 15267/64. Headings F2K and F2Q. To prevent over-running of a sequential switching-cam ratchet 9 which is intermittently rotated by a leaf spring pawl 12 bowed by a cam follower roller 8 following a continuously rotating cam 5, driven from a synchronous electric motor pinion 7, the cam 5 is connected by a lost motion connection with an adjacent cam 4 freely pivotable on the same shaft and having a pin 14 engaging an arcuate slot 15 in cam 5. The pin 14 moves to one end of slot 15 as shown, until roller 8 has transferred to cam 4 from cam 5 and reached the peak of cam 4 when the pawl reaction moves pin 14 to the other end of slot 15 preventing rapid return of roller 8, and over-running of ratchet 9 which has a pawl 13 preventing back-running. A spring may also be used to retard the movement of cam 4 by roller reaction.