baber/WOPTO huggingface dataset:
Patent GB-1138970-A (GB)
Title: Method of and apparatus for producing a spectacle lens bevel
IPC: B24B9/14
Filed: 1966-04-12
Abstract: 1,138,970. Grinding. WERNICKE & CO. K.G. 12 April, 1966 [9 April, 1965], No. 15814/66. Headings B3D and B3K. A device for producing a spectacle lens bevel which runs along a solid curve having co-ordinates situated at right-angles to the lens surface comprises a follower which is rotatably but non- axially displaceably mounted on the shaft of a bevel grinding wheel and engages the inner side of a spectacle frame, or a pattern formed using the lens, mounted on a shaft carrying the lens for displacing the bevel grinding wheel in a direction parallel to the axis of the shaft. The lens blank R is initially mounted between the parts 5, 6 of a work holder on shafts 1, 7, shaft 1 carrying a template 4 corresponding to the desired shape of the lens and being driven by a motor 3, and shaft 7 having a collar 8 carrying a pattern 9 having an annular flange 11 which is to be formed to the contour of the solid curve of the lens. The template 4 is engaged by a follower 16 on a shaft 13 which is rotatable by a motor 17 and is aligned with a shaft 14, the shafts having couplings for connection to a shaft 15 carrying a wheel 19 for grinding the periphery of the lens. After the initial grinding of the periphery of the lens, the grinding wheel 19 and shaft 15 are replaced by a feeler disc 28, Fig. 2, and shaft 27, and a milling cutter 35 is mounted on a motor 24 carried by an arm 22 rotatably, but not slidingly, mounted on the shaft 14. The feeler disc 28 has a raised centre part 29 forming recesses 32, 33 which are selectively engageable with the edges T 2 , T 1  of the rim S of the ground lens G and control the axial displacement of the disc 28 and hence movement of the milling cutter 35 during rotation of the lens to form a contour 36 on the pattern 9 corresponding to the solid curve of the lens. Springs 26, 26a urge the disc in one direction or the other and, during forming, the template 4 may be disengaged from the follower. Thereafter, the bevel is ground on the lens by replacing the disc (28) and milling cutter (35) with a grinding wheel (39, Fig. 3) and follower (37), the latter engaging the contour of the pattern (9) to move the grinding wheel (39) axially during rotation of the lens so as to follow the contour of the lens. In another embodiment, the shaft (7, Figs. 6 and 7) has an extension (69) on which the spectacle frames (62) are mounted in a holder (60, 61). A feeler (64) which is on a bush (66) slidable on an arm (67) extending from the shaft (14) and is urged by a spring (68) against the inner edge of the frame, controls the axial movement of the grinding wheel (39) during rotation of the lens and frame, the movement of the grinding wheel in its plane being controlled by the template (4) and follower (16). In a similar embodiment, the template and follower (14, 16) are omitted and the movement of the grinding wheel in its plane as well as axially are controlled by the feeler engaging the inner rim of the spectacle frame.
Patent GB-750875-A (GB)
Title: Electric semi-conductor devices
IPC: H01L23/04
Filed: 1954-05-28
Abstract: 750,875. Semiconductor devices. STANDARD TELEPHONES & CABLES, Ltd. May 28, 1954 [June 3, 1953], No. 15834/54. Class 37. In a crystal contact device, the whisker 4 is positioned in a metal tube 5 which is crimped at one end to secure the whisker which engages the surface of crystal element 2. The whisker is bowed against one side of the tube by the contact pressure. The tube 5 and crystal 2 are supported by terminal members 7 and 3 which may be of lead plated steel or brass, and may be recessed to facilitate support. The elements are enclosed in a ceramic or plastic housing 1 which may be sealed by wax or plastic material 8. In a modification, the member 7 is provided with a hole so that it serves the same purpose as tube 5. The crystal may be germanium or silicon. The length of the whisker may be selected according to reactance requirements for high frequencies.
Patent GB-142700-A (GB)
Title: Improvements in frames or chassis of motor vehicles, more especially applicable to cycle cars
IPC: B62D21/02
Filed: 1919-06-25
Abstract: 142,700. Thompson Bros., Thompson, H. J., and Meredith, J. W. June 25, 1919. Frame components, applying and combining; tubular constructions.-The frame or chassis is made as a complete unit, comprising as essential features transverse metal plates 5, 6, 7 and longitudinal tubes 1 rigidly connected thereto. The tubes may pass through the plates, and be soldered to metal sleeves welded to the plates.
Patent GB-218663-A (GB)
Title: Improvements in apparatus for rectifying alternating currents
IPC: H02M7/36
Filed: 1924-07-02
Abstract: 218,663. Kammerer, F. July 4, 1923, [Convention date]. Electromagnetic interrupters.-In an apparatus for rectifying alternating currents, comprising a transformer core 2 furnished with pole-pieces 5, 6, an oscillating armature 11 adapted to be attracted by the pole-pieces alternately, and a permanent magnet 10, one pole of which polarizes the pole-pieces and the other pole the armature, auxiliary coils 8, 9. in shunt with the primary winding, are mounted on the pole-pieces in order to shift the phase so as to cause the commutation, which is effected by arms 15, 16 on the armature, to take place at the zero-voltage points. The primary winding of a transformer 7 is connected to the alternating current terminals a<1>, b<1>, and the secondary winding is connected to contacts 13, 14, which co-operate with contactsprings 17 - - 20 connected to the direct-current leads g<1>, g<2>.
Patent GB-1336822-A (GB)
Title: Process for manufacturing lubricating oil
IPC: C10G65/10
Filed: 1972-04-06
Abstract: 1336822 Production of lubricating oils INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 6 April 1972 [7 April 1971] 15973/72 Heading C5E Lubricating oil is produced by hydrocracking a deasphalted distillation residue of which at least 75 wt. per cent boils above 525 C. in a first zone such that 70-95 wt. per cent of the product boils below 525 C. and then hydrocracking at least a portion of fraction boiling above 525 C in a second zone such that at least the major part of the feed to the second zone is converted to products boiling below 525 C. The two stages can be carried out at 330-450 C. and a hydrogen partial pressure of 80-240 kg./cm. 2  using catalysts such as cobalt or nickel together with molybdenum or tungsten on silica-alumina zeolite or halogenated alumina, or platinum on alumina-silica or chlorinated or fluorinated alumina. As shown the effluents from the first reactor 4 and the second reactor 30 can be passed to the same separation system. Hydrogen is recycled, C 1-4  hydrocarbons, gasoline and gas oil are obtained from an atmospheric column 16 via lines 17, 18 and 19 and heavy gas oil and lubricating oil fractions ranging from spindle oil to heavy distillate are obtained from a vacuum column 22 via lines 23, 24, 25 and 26.
Patent GB-463521-A (GB)
Title: Improvements in or relating to machines for attaching buttons
IPC: D05B73/12
Filed: 1936-06-08
Abstract: 463,521. Sewing-machines. JACKSON, L. MELLERSH-. (International Button Hole Sewing Machine Co.) June 8, 1936, No. 15980. [Class 112] In a machine for attaching buttons by stitching, the clamp for the button comprises at least three jaws relatively movable towards or away from each other, and gripping the button at points equally spaced round its periphery. The jaws are preferably moved in unison by racks engaging a common pinion. The button-holding assembly comprises upper and lower plates 29, 30 held in spaced relation by studs 31, 32, 33, 34. The presser foot 37 is secured to the under plate. Three slides 39, 40, 41 carrying the button-clamping jaws 58. The slide 39 is guided in a way 42 formed on the underside of the top plate 29. The slides 40, 41 have pairs of slots 43, 44 and 47, 48 respectively sliding on rollers on the studs 33, 31 and 32, 34. The slides 39, 40, 41 have racks 51, 52, 53 which co-operate with a common pinion 54, so that the slides move in unison to clamp the button. The slides are normally urged into button-clamping relation by a torsion spring 65 coiled about a pin 66 carried by the top plate 29 and urging the slide 39 forwardly. An abutment screw 70 engaging the lug 71 at the rear of the slide 39 forms a stop. A bell-crank lever 72 pivoted on the pin 63 can be operated by a treadle to force the slide 39 back and release the button.
Patent GB-785801-A (GB)
Title: Improvements in or relating to conveyor systems
IPC: B65G17/20
Filed: 1955-06-03
Abstract: 785,801. Endless chain conveyers. KING, D. M. May 2, 1956 [June 3, 1955], No. 15985/55. Class 78 (1). In a conveyer system comprising an endless conveyer chain (not shown) running in a fixed track 14, such chain being adapted to support load carriers such that any carrier may be stopped without interrupting the drive to the chain, each load carrier consists of a C-shaped member 11 of channel section reinforced by a welded plate 12, and a shoe member 13 secured to the upper part of the member and adapted to rest on the chain, the shoe member being formed with upturned ends of different lengths which abut with the corresponding ends of adjacent carriers when the carriers accumulate at a stopping station. A load is suspended by means of a load bar 23 from the bottom portion of the carrier which is guided in the lower portion of the track 14 by rollers 21, 22 rotating on vertical and horizontal axes respectively. The load bar is vertically slidable and is equipped with a projecting arm 24 adapted to co-operate with track switches as described in Specification 701,610. The upper end of the carrier is guided by a pair of rollers 15 cooperating with one side of the track 14 so as to position the shoe centrally with respect to the conveyer chain. A hood member 16 is secured together with an intermediate packing member 18 to the shoe 13, these three members being provided with aligned openings for receiving a dog-ejector 17 which is vertically slidable. The dog-ejector operates in association with spring- pressed dogs which are provided on the chain and with ramps located adjacent the stopping stations. The dogs are normally engaged with the openings in the shoes 13 of the carriers, causing the dog-ejector 17 of each carrier to be raised. As a stopping station is approached by a carrier, a ramp (not shown) depresses the dogejector 17 so that its bottom surfaces lies flush with that of the shoe 13, whereby the dog on the chain is depressed out of engagement with the carrier.
Patent GB-899795-A (GB)
Title: Nickel plating processes
Inventor: SUCH TONY EUGENE
IPC: C25D3/18
Filed: 1960-05-06
Abstract: 899,795. Nickel-plating baths. CANNING & CO. Ltd., W. April 17, 1961 [May 6, 1960], No. 16081/60. Class 41. Nickel-plating baths are improved by adding phthalimide or a water-soluble derivative thereof, which includes an aliphatic chain substituted at the N atom, and OH, halogen and similar radicals substituted in the nucleus. Examples include N-hydroxy methyl phthalimide, phthalimino, acetic acid, N-2-bromo ethyl phthalimide, and N-morpholinyl phthalimide. Wetting agents, alkali metal or ammonium salts and boric acid may also be added. The nickelplating salt used should not include NiCl2 above a concentration of 50 g. per litre.
Patent GB-942158-A (GB)
Title: Photopolymerisable compositions and elements containing the same
IPC: G03F7/027
Filed: 1961-05-03
Abstract: A photopolymerizable composition comprises, for a total of 100 parts, (1) 10 to 60 parts of a normally non-gaseous ethylenically unsaturated compound containing 1 to 4 terminal ethylenic groups, having a molecular weight of less than 1500 and a boiling point above 100 DEG C.; (2) 0.001 to 10 parts of a photopolymerization initiator, normally non-reactive with stannous chloride in the absence of actinic radiation and inactive thermally below 185 DEG C.; (3) 40 to 90 parts of a compatible, coherent film-forming-polymer having a molecular weight greater than 10,000; and (4) 0.3 to 3.0 parts by weight of a stannous salt, e.g. stannous chloride, borofluoride, octoate, laurate and palmitate. Compounds (1) specified are the diacrylates and dimethacrylates of diethylene, triethylene, tetraethylene, dipropylene, polyethylene and polybutylene glycols, methoxytriethylene glycol acrylate and methacrylate, glyceryl triacrylate, 1,2,4- butanetriol trimethacrylate, pentaerythritol tetramethacrylate, glycol dimethacrylate and other monomers described in Specification 741,441. Initiators (2) specified are benzoin, pivaloin, benzoin methyl or ethyl ethers, alpha-methyl, alpha-allyl and alpha-phenyl benzoins, benzophenone, uranyl nitrate, anthraquinone and substituted anthraquinones (listed).  Polymers (3) specified are cellulose acetate, cellulose acetate succinate, N-methoxymethyl polyhexamethylene adipamide, polyamides containing N-acrylyloxymethyl groups, polyvinyl acetals containing vinylidene groups, polyester, polyacetal or polyester-acetal mixtures. polyvinyl alcohol derivatives and polybutadiene. Also present in the compositions may be polymerization inhibitors, e.g. p-methoxyphenol, hydroquinones, tert-butyl catechol, pyrogallol, copper resinate, cuprous chloride, naphthylamines, beta-naphthol, tert-butyl-p-cresol, phenothiazine, pyridine, nitrobenzene, dinitrobenzene, p-toluquinone, chloranil and triazine dyes.  The resulting compositions are polymerized by exposure to actinic light, and find particular application in the manufacture of printing plates. Specifications 786,119, 807,948, 815,277, 825,795, 826,272, 854,980 and 864,041 also are referred to.
Patent GB-567775-A (GB)
Title: Improvements in dynamo electric machines for supplying both direct current and alternating current
IPC: H02K23/50
Filed: 1942-11-13
Abstract: 567,775. Dynamo-electric machines. MANDL, A., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Nov. 13, 1942, No. 16116. [Class 35] In a combined D.C. generator and inductor alternator, of the kind in which the teeth of the D.C. armature serve as inductors for A.C. windings accommodated in slots in the pole-faces of the D.C. field system, the effect of armature reaction of the A.C. winding is minimised by the provision of short-circuited damping windings for the field poles of the machine. The damping winding may consist of metal spools or collars fitted around poles or of metal ribbons or wires located in the recesses between the poles and connected together at their ends in the form of a squirrel-cage. In cases where the field windings are accommodated in metal liners fitted between the poles, the liners may be connected to the core end-plates which clamp the field laminations together so as to form damping windings. Where the machine has four main field poles, field coils may be connected in parallel circuits so that one pair of windings acts as a damper for the other pair. To minimise effects of direct current armature reaction, a compensating winding may be housed in the same slots as the A.C. windings. To avoid excessive alternating current ripple on the D.C. output, the armature should have such a number of slots that the number of slots per pole and per pair of poles is not integral. For the same purpose the slot pitches of the alternating current winding and of the D.C. armature winding should be other than an exact multiple of 2, the slots in adjacent poles being so displaced relatively to the centre lines of the poles as to avoid loss in alternating current voltage. In the construction shown, the stator of a four-pole machine comprises laminations sl clamped between end-plates EP in a yoke Y. The laminations are formed with large slots fs to receive field coils n<SP>1</SP>, s<SP>2</SP>, n<SP>3</SP>, s<SP>1</SP>, oach embracing slots ss which accommodate alternating current windings ac and a direct current compensating winding c. The damping winding for each pole consists of a metal liner d arranged in the slots fs and having flanges d<SP>1</SP>, d<SP>111</SP>, the former flanges being soldered to the end-plates EP and the flanges d<SP>111</SP> being connected to a thin retaining plate d<SP>11</SP> for the field coils, so that the four liners together with the end-plates form a squirrel-cage structure embracing the poles. The armature has twentythree semi-closed slots as, forty-one commutator bars and .five dummy coils, as as the number of armature slots per pole is not integral. the stator slots of adjacent poles are oppositely displaced about the centre line of each pole, as shown in Fig. 4, by an amount necessary to bring the induced voltages in the windings of the two poles into phase.
Patent GB-1521002-A (GB)
Title: Coating compositions
IPC: C09D5/16
Filed: 1977-03-31
Abstract: 1521002 Antifouling paints IMPERIAL CHEMICAL INDUSTRIES Ltd 31 March 1977 [21 April 1976] 16120/76 Heading C3K Paints contain, as an agent to prevent marine fouling, a nitrothiophene which is substituted with at least one additional electron-withdrawing atom or group. The atom or group can be a further nitro group or halogen, cyano, acyl, alkoxycarbonyl or acylamino. Co-toxins such as cuprous oxide can be present.
Patent GB-199732-A (GB)
Title: Improvements in or relating to electric discharge-tubes
IPC: H01J61/92
Filed: 1923-06-21
Abstract: 199,732. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. June 21, 1922, [Convention date]. Arc lamps.-Several electrodes or pairs of electrodes are enclosed in a bulb, the electrodes of the same polarity being connected in parallel so that during working only one electrode or pair of electrodes becomes incandescent. As shown, two pairs of tungsten electrodes are used, the electrodes 2, 4 being mounted on a lead 6, and the electrodes 3, 5 on a lead 7; the distance between the pairs of electrodes 2, 3 and 4, 5 should be the same. The filling consists nitrogen, a rare gas such as neon, or a mixture of rare gases. Starting is effected by an auxiliary discharge or an incandescent filament, or by applying a high voltage so that a glow discharge is produced which changes into an arc between one pair of electrodes. If, during working, one of the electrodes is burnt out, or the distance between the electrodes increases, the arc will be established between the other pair of electrodes. For usd as a rectifier a single anode may be disposed opposite to several cathodes connected in parallel. In a lamp working on continuous current several cathodes may be used with a single anode, or several anodes with a single cathode; in the latter case the anodes should consume away more quickly than the cathode. Resistances may be connected with the electrodes.
Patent GB-167154-A (GB)
Title: Improvements in and relating to drying apparatus
IPC: F26B15/20
Filed: 1921-06-11
Abstract: 167,154. Scherhag, A. July 30, 1920, [Convention date]. Trays, moving.-In drying-apparatus of the kind in which the material is contained in a series of superposed trays in a casing through which hot air ascends, each tray is formed around its upper edge with a sleeve-like projection into which the bottom of the next tray can fit, and the lifting and suspension of the upper trays, when it is required to withdraw the lowest tray, is effected by lugs which are reciprocated vertically so that they are withdrawn from the casing in their lowest position and are moved by slotted guides in their upward motion to engage the projection on the tray above the lowest. Fig. 1 shows apparatus comprising a series of trays or boxes 3 - - 7 partially nested and contained in a casing 1 through which hot air rises, escaping by a flue 8. On each side is a pair of rods 16, 17 suspended from cranks carried at the ends of a cross shaft 10, 11, the cranks on one side being connected by a link 13, and a lever 12 connected to one of the cranks on the other side, affording lifting and lowering means for the four rods. The rods are bent at their lower ends, Figs. 1 and 4, to carry horizontal rods 18 the ends of which move in curved slots in brackets 21 on the casing, and to form lugs 19 which in their upper positions extend through apertures 22 in the sides of the casing and lift the second lowest box 4, while in their lowest positions, shown in dotted lines, they are withdrawn from the casing. Shields 23 sliding in guides and formed with apertures through which the lugs extend, fitting closely, prevent escape of air. Flaps 24, 25, Fig. 1, which can be screwed down tightly, are provided for insertion and removal of the tray. The flow of air may be cut off on or through the opening of the lower flap.
Patent GB-386222-A (GB)
Title: Indicator for recording any opening or closing of the space between crank webs at all points during a revolution of the crank shaft
IPC: G01B5/00
Filed: 1932-06-09
Abstract: 386,222. Linear-dimension gauges. HARRISON, W., 2, Ryecroft Road, Stretford, Manchester. June 9, 1932, No. 16249. [Class 106 (ii).] Comprises a gauge by which variations during a revolution in the distance between the webs of a crank shaft due to lack of alignment of the bearings is recorded. A yoke A formed with a part B of weak section to allow a springy movement carries two pads C, C<1>, one or both of which may be pivoted to accommodate itself to the surface engaged. The pad C<1> can be adjusted to and away from the other by a nut D on a right- and left-handed screw. A disc E weighted at F is mounted on ball bearings and provided with a flat spring clip G. Secured to the rigid part of the yoke is a bracket H carrying the multiplying mechanism which is held in contact with an adjustable stop I by a spring J which also serves to hold the lever K against the guide L and the latter in position. The end of the lever K carries a marker N. The surface of the part M in contact with the stop I is formed so that the movement of the stop is reproduced to a constant magnified scale by the pencil throughout the whole range. The guide L and lever K can be moved and held out of position by the knurled headed screw O to enable record paper or material to be placed on the disc E. A locking bolt R prevents movement of the disc when the instrument is not in use. In use, the device is placed between the webs or between the balance weights on the web extensions and adjusted until held frictionally. The disc is now rotated to scribe a base circle. The shaft is then given a revolution and the marker records variations from this circle.
Patent GB-1010262-A (GB)
Title: Production of pure chromium by electrolyzing process
IPC: C25C3/32
Filed: 1962-04-27
Abstract: Pure chromium is made by fusion electrolysis using as electrolyte one or more alkali metal or alkaline earth metal chlorides, one component being sodium chloride, a mixture of chromium chlorides with an average valency between 2 and 3, and up to 5% of free sodium, and using as anode a ferro-chrome alloy and one of Cu, Ti, Si, Sn, or similar metal in the same electro-potential range.  For example, an alloy of Fe 20%, Cr 49%, Si 30%. In the case of Cu and Ti the content of these is higher than in the case of Si, and in the case of Sn is lower.  The alloy in the form of particles held in a basket, was held in molten NaCl containing 5% of chromium chlorides valency 2.05 and 0.1% of free sodium, maintained at 860  DEG C.  The cathode was of stainless steel, and an inert atmosphere was used.  The chromium metal crystals deposited contained 0.75% iron, and negligible interstitial impurities.
Patent GB-281562-A (GB)
Title: Improvements in apparatus for supporting lawn tennis nets and the like
IPC: A63B61/02
Filed: 1927-06-20
Abstract: 281,562. Lane, M. R. June 20, 1927, Wire and c o r d strainers. - T h e strainer, which comprises a lever 15 and a link 17 connecting the lever to the cord 10 of a tennis-net, is carried by a sleeve 12 which can slide upon the post 4 and can be secured in any desired position by the engagement of a spring- pressed pin 21 in any one of the holes 24 along the post.