baber/WOPTO huggingface dataset:
Patent GB-252807-A (GB)
Title: Improvements in relays and like devices
IPC: B60L15/32
Filed: 1925-03-09
Abstract: 252,807. British Thomson-Houston Co., Ltd., and Petch, H. S. March 9, 1925. Automatic circuit-breakers; electromagnetic and magnetic switches. - Relay devices adapted more particularly for controlling electric switches &c. have a non-pivoted magnetic member such a roller 15 normally biassed to one position as shown in Figs. 1 and 2 by the stray field 22 of a magnet from which it is moved either electromagnetically or mechanically to a second position from which it is biassed partly by the main field 24 of the magnet and partly by springs and gravity to a third position in which it actuates a member such as a circuit-breaker tripping lever 26 through a sliding member 25. The stray field of the magnet 11, which may be a permanent or an electromagnet, normally holds the roller 15 against a stop 16 which may be adjustable. The striking member 18 for moving the roller from this position is secured to a spring blade 17 carrying at its free end an armature 19 adapted to be attracted to the electromagnet 21. Sticking of the roller is prevented by the provision of a non- magnetic sheath on the roller or on the magnet pole-piece on which it rests.
Patent GB-608983-A (GB)
Title: Improvements in and relating to a retaining device for a rotary loop-taker of a sewing machine
IPC: D05B57/14
Filed: 1946-03-04
Abstract: 608,983. Sewing - machines. MEFINA SOC. ANON. March 4,1946, No. 6617. Convention date, April 18, 1945. [Class 112] Lock-stitching by rotary hooks.-The bobbin-holder is prevented from rotation by two prongs thereon engaging two automatically actuated and alternately retreating stops, providing free passage of the needle thread. The stops are placed close to and on opposite sides of the needle axis, so as to allow the maximum time for their operation between engagement and release of the needle loop by the hook; they are shaped and arranged so that the force exerted on the bobbin-holder is constant and has a radial component counteracting to some extent the pull of the bobbin thread towards the needle, and also, in the case of a vertical-axis hook, so that the pressure of the bobbin-holder on the horizontal bearing surfaces of the hook is reduced. In the form shown in Fig. 1, the bobbin-holder 19 of a two-revolution vertical-axis rotary hook 11, driven by bevel gears from a shaft 16, is provided with two prongs 24, 25, and an arm 34, mounted on a spindle 28 and oscillated by a cam 29 on the shaft 16, has stop members 35, 36 to engage the prongs 24, 25 respectively to prevent clockwise movement of the bobbin-holder while permitting reverse movement to facilitate withdrawal of the work if the machine stops with the needleloop engaged with the bobbin-holder; the oscillation of the arm 34 carries the stop members alternately out of engagement with the respective prongs, one upwardly and the other downwardly, at least one being in engagement at any time. The member 36 is adjustable on the arm 34 so that both stops can be arranged to engage the bobbin-holder prongs together and the surfaces of the stops are made tangential to their arcs of oscillation; thus there is no vibration when one stop comes into action and the other moves away from its effective position. The engaging surfaces of the stops and prongs are also somewhat inclined to the corresponding radii of the hook, so that they act in opposition to the lateral pull of the lower thread on the bobbin, and the spindle 28 is arranged below the level of the hook so that the path of the stops is inclined and they afford a measure of vertical support to the bobbin-holder. Feed-bar mechanism; feed, reversing and regulating.-Fig. 5 shows a feed-bar mechanism actuated entirely from a cam 29 on the loop-taker shaft 16. The feedbar 42 is pivotally supported by a yoke 44 having a forked part 46 for oscillation by the cam 29 to produce the feed-lift movement and is connected by a link 47 to the end of a pitman 52 also actuated by the cam to produce the feeding movement, the connection between link and pin being guided by a link 50 which is pivoted to an adjustable arm 53 whereby the feed is regulated.
Patent GB-299661-A (GB)
Title: Improvements in or relating to heating lamps
IPC: F23D3/00
Filed: 1928-03-02
Abstract: 299,661. Mappin & Webb, Ltd., and Ryder, H. M. March 2, 1928. Burners, preventing conduction of heat from; oil reservdirs; wick burners, solid flame, and flame -regulating in.-The fuel reservoir of a heating lamp consists of two chambers A, B connected by two diametrically-opposite tubes D, the outer chamber A being shielded from the heat of the burner by the perforated conical casing or " grid frame " J and the inner chamber B by a flange g<1> on a dome C surrounding the wickburner tube M. The casing J is supported by the chamber B and carries a kettle-stand K or other device for utilizing the heat of the lamp. An annular air space C separates the inclined surfaces of the chambers A, B. The burner tube M is closed at the top and provided at its open lower end with bayonet slots adapted to engage a crossbar N at the bottom of the chamber B. The fuel passes to the wick through slots m<1> in the tube M and the flame issues through slots m<2>. The flame is regulated or extinguished by a tube S which can be raised to cover partially or wholly the slots m<2> by means of rack and pinion gearing s', r<2> operable by a spindle R having a milled head r<1> located outside the casing J. A filling spout a<2> fitted with a screw cap a<3> is provided on the chamber A.
Patent GB-549486-A (GB)
Title: Improvements in or relating to electrical discharge devices and process of making the same
IPC: H01T13/39
Filed: 1940-04-12
Abstract: 549,486. Radio-active electrical discharge devices. STEVENS, A, H. (Firestone Tire & Rubber Co.). April 12, 1940, No. 6699. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 30, 1941.] Drawings to Specification. [Class 1 (i)] [Also in Groups XXVII and XL] An electric discharge device, e.g. a sparking plug, neon lamp, or cold-cathode discharge tube has a strongly radio-active uncombined metal incorporated in one or both of the electrodes to an extent of less than 0.001 per cent. Polonium is the preferred metal. It may be alloyed with the metal constituting the electrode or plated on it or otherwise secured to it.
Patent GB-642047-A (GB)
Title: Improvements in or relating to nail-driving apparatus
IPC: B25C1/04
Filed: 1948-03-03
Abstract: 642,047. Nailing. HOTVEDT L. C. March 3, 1948, No. 6713. [Class 89(iii) In a pistol-like nailing device, a cycle of operations comprising the feeding and driving of a nail is effected by a continuously oscillating power driven lever 19 each time a trigger 12 is pulled. A hammer 83 for a nail driver 81 is coupled to a piston 34 slidable in a housing 10 by a lazy tongs mechanism 86 which is anchored at its rear end 92 to a box-like slide 93 embracing the housing 10. The piston 34 is withdrawn against a spring 84 by a pivoted latch 26 carried by an arm 22 pivoted to the lever 19 at 21 and lowered by a spring 23 but normally, held out of engagement with a claw 31 on the piston rod 33 by a bridge member 36, Fig. 8, carried by pivoted levers 38, 39. Operation of the trigger 12 withdraws an arm 51 from the tail 49 of a twoarmed lever 45 pivoted at 46 on the bridge and by means of an arm 53 stresses a spring 56 to rock the lever 45 and so raise a tooth 47 thereon for cooperation with a foot 37 on the lever 22. When the lever 22 next moves rearwardly, it engages the tooth 47 to swing the bridge 36 downwards, and the arm itself also moves downwards so that upon its next forward stroke the latch 26 engages the claw 31. The arm 45 is held down by a pivoted latch 74. Depression of the bridge releases a catch 96 to hold the slide 93 in its rearward position. A projection 68 on the bridge 36 engages the tail 67 of a catch 63 to release the trigger 12. The striker 81 is moved into engagement with a nail by an upper slide 115 normally locked against movement by a stop 134 being engaged by a spring 126 on a control lever 124. When the lever 124 is rocked to disengage the spring 126, a further spring 128 rocks a pawl 123 to couple the slide 115 to a lower slide 106 which is continuously reciprocated due to its connection to a lever 112 pivoted at 114 on the lever 19. The slide 115 is held in its forward position by a spring 127 on the lever 124 engaging a slot 190. The slide 115 is coupled to the striker 81 by a rod 116 slidable through a lug 117 therein, a spring 121 being provided between the slide 115 and the lug 117. When a nail is fully driven, the lug 117 draws the rod 116 and slide 115 forward so that the latter engages. a stop 137 on a spring-controlled release bar 136 having a tooth 139 at its rear end to release the latch 74 and allow the lever 45 and bridge 36 to return to their normal positions. The nail supplying mechanism is similar to that described in Specification 599,544 in which nails 141 are carried by a paper strip 142 and are fed from a drum 143. A ratchet feed wheel 146 is actuated by a pull rod 153 coupled to the bridge 36 and provided with a pin 132 which actuates the control lever 124 by engagement in a slot therein.
Patent GB-1034194-A (GB)
Title: Block copolyesters
IPC: C08G63/87
Filed: 1964-02-18
Abstract: A linear block copolymer of intrinsic viscosity of at least 0.3 dl/g. consists of 5-50% of recurring aliphatic polyester units of M.W. 1,000-20,000 and of formula <FORM:1034194/C3/1> in which m is at least 5 and 50-95% of recurring aromatic polyester units of formula <FORM:1034194/C3/2> in which n is an integer and Ar and Ar1 are both aromatic. It may be prepared by interacting an acid chloride terminated aliphatic polyester, an aromatic dicarboxylic acid chloride and a diphenol.  The aliphatic polyester may be prepared by interacting: (1) an acid chloride and a glycol, (2) a hydroxy ended polyester and an acid chloride or (3) a carboxy ended polyester and PCl3, PCl5 or SOCl2.  Aliphatic acid chlorides specified are those of adipic, azelaic, succinic, malonic, oxalic, glutaric, pimelic, suberic, sebacic, cyclohexane-1,3- and -1,4-dicarboxylic acids and cyclobutane-1,3-dicarboxylic acids. Glycols specified are neopentylene, hexylene, ethylene, propylene, isobutylene, butylene, pentylene, decylene glycols and 1,4-dio(hydroxy-methyl)-cyclohexane. However the aliphatic groups may contain double bonds and O and S atoms.  The aliphatic polymer may be mixed with the aromatic dicarboxylic acid chloride in an inert organic solvent and be reacted interfacially with the alkali metal salt of the diphenol.  Aromatic acid chlorides specified are those of phthalic, iso- and terephthalic, diphenyl - 4,41 - dicarboxylic and diphenyl-methane-dicarboxylic acids and 2,2-bis(4-carboxy-phenyl)propane. The diphenols may be of formula <FORM:1034194/C3/3> in which Ar and Ar1 are aromatic radicals optionally substituted with alkyl, aryl, cycloalkyl, halogen, nitro, ether or cyano groups; R is alkylene radical optionally substituted with alkyl, cycloalkyl or aryl or an ether, carbonyl, amino, sulphide, sulphonide, sulphone, silane or siloxy linkage; and a, b and c are integers within the limitation that if b = 0, a or c but not both may equal 0 and if b does not equal 0 neither may a or c. Many are disclosed including: 2,2-bis(4-hydroxyphenyl)-propane. Inert organic solvents specified are CH2Cl2, tetrachloroethylene, tetrachloroethane, CHCl3, CCl4 and o-dichlorobenzene.  Polymerization may take place at room temperature in the presence of a catalyst, e.g. benzyltrimethyl-ammonium chloride.  The product may be precipitated from the organic layer by adding a non-solvent, e.g. isopropanol.  In the examples an argon atmosphere is used for polymerization.
Patent GB-942444-A (GB)
Title: Improvements in or relating to envelopes especially for gramophone records
Inventor: LONG DENIS THORBY
IPC: B65D85/57
Filed: 1959-02-27
Abstract: 942,444. Envelopes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 24, 1960 [Feb. 27, 1959], No. 6817/59. Heading B6A. An envelope specially for gramophone records comprises a folded sheet 1 and a plastic liner 3 secured to the sheet 1 at the fold 2 and near the edges 4 and 5 opposite the fold, the side portions 8, 9 being folded over the side edges and secured. As shown in Figs. 1 and 2 the sheet 1 is formed with protruding side portions 6 and 7 which fold over the side portions 8, 9 and secured by adhesive and/or by a heat sealing process. In a modification (Fig. 4, not shown) a sheet of cardboard or chip board (12) replaces the sheet 1 but has no side portions 6, 7. The edges of the liner which protrude from the cardboard are folded over together with an additional art cover (16) with three flaps is secured overall.
Patent GB-691642-A (GB)
Title: Improvements relating to the coupling of aligned rollers
Inventor: HOLT HARRY
IPC: D01H5/74
Filed: 1951-03-22
Abstract: 691,642. Textile rollers. LEES & SONS, Ltd., H. Jan. 25, 1952 [March 22, 1951], No. 6853/51. Class 120(ii) [Also in Group XXIV] Two rollers a, b are coupled in axial alignment by the engagement of a screwthreaded portion e of the shaft of roller b within a correspondingly tapped hole in the shaft of roller a, the shaft of roller a being provided with a cylindrical portion d and conical portion c engaging within corresponding portions and i of a sleeve h, and cylindrical portions f, g of the shaft of roller b engaging corresponding portions k, m within the sleeve h.
Patent GB-1285323-A (GB)
Title: Improvements in or relating to overhead travelling cranes
Inventor: COWAN WILLIAM GRAHAM
IPC: B66C7/00
Filed: 1971-03-15
Abstract: 1285323 Overhead travelling cranes J H CARRUTHERS & CO Ltd 15 March 1971 6900/71 Heading B8B An overhead travelling crane has a pair of end carriages 12 (one only shown), and a beam 10 extending therebetween. A trolley 20 mounted partially on the side of the beam 10 on wheels 22 tortionally loads the beam 10. The trolley 20 comprises a frame 24 with a main platform 26 and a cantilevered section 34 forming a recess in the trolley 20 in which an end carriage 12 is at least partially accommodated at the end of the travel of the trolley 20 along the beam 10.
Patent GB-286629-A (GB)
Title: Improvements in and relating to crank grinding machines
IPC: B24B5/42
Filed: 1927-04-06
Abstract: 286,629. Landis Tool Co., (Assignees of Steiner, A. P., Stoner, P., and Harrison, C. P.). Aug., 2, 1926, [Convention date]. Divided on 275,164. Chucks for holding a crank shaft 46 each comprise a semicircular seat 51, Fig. 20, and a jaw 53 which is closed against a spring 60 by a fluidoperated piston 58. The pipe supplying the operating fluid is connected to the rotating head 49 at its axis by a joint allowing relative rotation. The sleeve 64, Fig. 6, in the chest 62, is operated by a hand lever 66 to connect the cylinders 59 to exhaust or to supply through a check valve 68 which prevents release of the work should the fluid supply fail. The valve 64 also admits fluid pressure to a cylinder, so as to lift a switch into such a position that it can be operated by a hand lever to start a motor which rotates the chucks.
Patent GB-576920-A (GB)
Title: Improvements in or relating to casement windows
IPC: E06B7/22
Filed: 1944-04-17
Abstract: 576,920. Draught and weather excluders. PERFECTA MOTOR EQUIPMENTS, Ltd., and BOSTOCK, C. W. April 17, 1944, No. 7030. [Class 20 (iii)] A seal for casement windows having metal hinged frames comprises close pile fabric c projecting from the inner surface of a laterally projecting flange b on the hinged frame a to engage the outer surface of the fixed frame d. The close pile fabric may be mounted in the manner described in Specification 575,712, and the present sealing means may be used in conjunction with that described therein.
Patent GB-1412332-A (GB)
Title: Optical apparatus
IPC: G01D5/28
Filed: 1973-02-13
Abstract: 1412332 Indicating measurement MOORE REED & CO Ltd 8 Feb 1974 [13 Feb 1973] 7064/73 Heading G1J In a reflecting mirror galvanometer or similar indicating instrument in which a line of light is reflected from a mirror 11 on a moving coil via at least one other reflecting surface 13 on to a screen 15 of homogeneous translucent thin material carrying a scale on which the deflection of the mirror is read, the line of light is a projected image of a low power tungsten filament lamp 12 which is mounted with its longitudinal axis XX 1  normal to the length of the screen 15, the light being projected at an angle α of 60 degrees Œ 10 degrees to the axis XX 1 , through a stop 16, and the screen 15 is inclined at a small angle # Fig. 4 relative to a plane normal to the axis XX 1  to prevent back reflection from the screen from impinging on the reflecting surface 13. The lamp 12 is in an enclosure 13a to prevent stray light from reaching the screen 15.
Patent GB-671376-A (GB)
Title: Improvements in or relating to the simultaneous production of higher molecular alkyl halogenides and halogen-substituted primary alcohols
IPC: C07C17/26
Filed: 1949-03-15
Abstract: Higher-molecular alkyl halogenides and primary halogen-substituted alcohols are produced by reacting the hydracid of chlorine or bromine and monomeric or polymeric formatin with an ethylenic hydrocarbon containing at least eight carbon atoms and having no double-linked carbon atom in the end position.  The reactions can be written as follows: <FORM:0671376/IV (b)/1> in which R, R1, R1, and R11 represent straight or branched alkyl radicals or hydrogen providing at least six carbon atoms are present and that neither both R and R1 nor both R1 and R11 are hydrogen atoms; and in which X represents a halogen atom.  At the same time some of the halogen acid reacts with the olefine as follows:  <FORM:0671376/IV (b)/2> The alkyl halides formed in this way may be subjected to Friedel-Craft's reaction to give higher-molecular alkyl-benzenes or alkylnaphthalenes or like alkyl-aromatic hydrocarbons.  The halogen - substituted primary alcohols formed may be used in the production of anionactive detergents of the sulphonated fatty alcohol class.  When esterified with halogen hydracids to p  dihalogenides X-CnH2n-CH2-X they may be used as constituents of cationactive detergents belonging to such classes as quaternary ammonium salts and alkyl pyridinium salts. The higher-molecular halogen-containing primary alcohols on losing one molecule of halogen hydracid give primary ethylene alcohols CnH2n-1-CH2OH which are useful in the preparation of perfumes and detergents.  These unsaturated ethylene alcohols may be hydrogenated to give saturated alcohols which are suitable for the same purposes. In the examples (a) octyl chloride and primary chlorononanol are prepared from octylenes, and (b) dodecyl chloride and chlorotridecanol are prepared from dodecylenes.  The chlorononanol formed in (a) is treated with alcoholic potash to give primary nonanol and the chlorotridecanol formed in (b) gives tridecanol with the same treatment.  Specification 465,467 is referred to.
Patent GB-1480702-A (GB)
Title: Continuous cable tension monitor
IPC: G01L5/04
Filed: 1975-02-20
Abstract: 1480702 Measuring tension RUCKER CO 20 Feb 1975 7182/75 Heading G1G A ferrous cable tension monitor comprises a first circuit including a coil on a magnetic core of an electromagnet disposed adjacent the cable which coil is periodically energized, a pair of pickup coils disposed, one at each end of the core, to produce signals when the cable moves in the field produced by the electromagnet, and means including a second circuit and responsive to the signals for controlling the energizing frequency and actuating an indicating device. As described an effectively positive feedback loop is established between the electromagnet 13, ferrous cable 6 and coil pick-ups 16, 17 so that the fundamental frequency of vibration of length L of the cable can be converted to a clipped squarewave utilized to give a continuous reading on a digital voltmeter (219) Fig. 4B, (not shown) of the tension in the cable. Logic circuitry Figs. 3, 4 (not shown) provides for start up, normal running and suppression of signals due to impressed extraneous higher frequency mechanical vibrations. During such noisy circumstances an alarm lamp is activated. Except in normal running conditions, the cable can be forced to vibrate at a frequency supplied by a generator (100), Fig. 3 (not shown) that approximates to the expected fundamental frequency. The pick-ups of coils 16, 17 wound in series on permanent magnets. The cable may be iron rope 1-4 inches diameter or a link chain. The driving coil is started at relatively high power and when the cable vibration amplitude is detected by a sensing resistor (97) to be sufficient, vibration is maintained at relatively low power. Test facilities include provision for comparing the amplified signal from the coils with a signal from a squarewave oscillator.
Patent GB-786286-A (GB)
Title: Improvements in or relating to ionisation counter tubes
Inventor: COHEN EDWARD
IPC: H01J47/08
Filed: 1955-03-11
Abstract: 786,286. Ionization counters. GENERAL ELECTRIC CO., Ltd. March 9, 1956 [March 11, 1955], No. 7234/55. Class 39(1). A cathode 5, Fig. 1, in an ionization counter tube is made as a continuous length or lengths of wire without joints where field emission could occur. As shown the whole wire including leads 11, 12 is continuous to the outside of the tube, but joints need only be avoided in the actual close-wound portion capable of acting as a cathode. The tube shown is of the type having two cathodes surrounding different effective volumes with a common anode 2, the second cathode 4 being a plain cylinder. In another form the wire cathode 14 has only one lead, the free end 16 being screened from the anode by glass sleeve 17. The filling may be neon and 1 per cent argon at 8 cms. with addition of bromine at 1 mm. Dimensions of electrodes are given for a gamma-ray detector sensitive to two ranges, of 10 and 200 Rontgens per hour respectively.
Patent GB-198799-A (GB)
Title: Improvements in appliances for increasing the audibility of telephones, gramophones and suchlike wire and wireless phonetic apparatus
IPC: H04R23/00
Filed: 1922-03-13
Abstract: 198,799. Clifford of Chudleigh, (W. H. Clifford), Baron. March 13, 1922. Multiple-diaphragm sound-boxes.- In apparatus in which the vibrations of the usual diaphragm 2 of a gramophone &c. are amplified by means of extra diaphragms 5, 7, which, with the diaphragm 2 form an air chamber 6 and a second chamber 8 containing non-inflammable gas preferably at less than atmospheric pressure, an electric current is passed through the gas chamber. When used for reproducing sound, this current preferably varies in correspondence with the sound waves. Fig. 2 shows the application to the reproduction of sound from a photographic record formed on a kinema film, by means of a selenium cell 13. Current variations corresponding to the sound record are passed through an electromagnet 15 the armature of which is fixed to the rear diaphragm 16, and are also applied to the gas chamber 17 to amplify the vibrations of the diaphragm 16. In order to transmit sound to a distance the back of the diaphragm 7 may be silvered to reflect a beam of light on to a selenium cell, so producing current variations corresponding to the sound waves.