baber/WOPTO huggingface dataset:
Patent GB-1332753-A (GB)
Title: Herbicidal compositions
Inventor: GANTE J
IPC: A01N37/10
Filed: 1971-05-19
Abstract: 1332753 Propionic acid derivatives MERCK PATENT GmbH 19 May 1971 [27 June 1970] 15781/71 Heading C2C [Also in Divisions A5 and C1] α,#-Dichloro-#-phenyl-propionic acid is prepared by passing chlorine into cinnamic acid. The ammonium, sodium, potassium, calcium, cupric, n-butyl ammonium and di-n-butyl ammonium salts are obtained therefrom. By refluxing the acid with the corresponding alcohol the methyl, ethyl, propyl, butyl, amyl, hexyl, octyl and ethoxycarbonyl methylthio-esters are prepared. α,#-Dichloro-#-phenyl-propionic acid phenyl ester is obtained by reacting sodium phenolate with the corresponding acid chloride. The thiophenyl ester and the acid thiocyanate also may be obtained. α,# - Dichloro - # - [5 - chlorofuryl - (2)]- propionic acid is prepared by passing chlorine into #-furyl-(2)-acrylic acid. The dichloroanilide thereof may be obtained. The corresponding dibromo compound may be obtained by adding bromine instead of chlorine. α,# - Dichloro - # - [5 - nitrofuryl - (2)] - propionic acid is obtained by passing chlorine into #-[5-nitrofuryl-(2)]-acrylic acid.
Patent GB-953126-A (GB)
Title: Improvements in or relating to multi-band television tuners
IPC: H03D7/12
Filed: 1961-05-02
Abstract: 953,126. Transistor mixer-oscillator circuits. E. K. COLE Ltd., and D. A. J. POOLE. April 26, 1962 [May 2, 1961], No. 15785/61. Heading H3T. In order to prevent interaction between the R.F. and local oscillator circuits and the I.F. circuit in a frequency converter of a multiband television tuner an I.F. suppressor network is connected between the collector of the local-oscillator mixer transistor and the tuning circuit of the local oscillator. As shown, R.F. signals are fed to the emitter of transistor T1 via R.F. band pass circuit L1, L2, C1 and mixed with the oscillations of the local oscillator whose frequency is determined by tank circuit L3, C3, an I.F. output being taken through the I.F. band-pass coil L4. The I.F. suppressor network comprises the parallel combination of inductor L5 and capacitor C6 and is connected between the collector of transistor T1 and the tank circuit L3, C3.
Patent GB-1212102-A (GB)
Title: Method and device for electrolytic cutting
Inventor: BOUCHET PAULETTE
IPC: B23H7/12
Filed: 1968-04-02
Abstract: 1,212,102. Electrolytic cutting. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 2, 1968 [April 7, 1967], No.15794/68. Heading C7B. In electrolytically cutting a workpiece 1 (e.g. of uranium) parallel flat rings 16a, 16b serve as cathodes and the workpiece as the anode. Electrolyte (e.g. acid) supplied by a nozzle 14 is poured on to the workpiece through the passageway 18 between the rings 16 whilst a protective liquid (e.g. oil) which is immiscible with the electrolyte is poured on each side of the passageway from nozzles 22, 23 thereby forming a film limiting cutting action in the lateral direction. The discs are rotationally driven alternately in one direction and then the other by means of a motor 10. The discs can be moved vertically towards or away from the work by means of a motor 28, pinion 26 and rack 24. This movement may be controlled in dependence on the voltage developed between the discs and workpiece or on the current intensity, the voltage and current being functions of the distance between the discs and workpiece. Thus, the motor 28 can be started and stopped so as to maintain the distance constant. As shown, an element 30, responsive to voltage in the electrolysis circuit, controls startup of the motor 28. Positionally adjustable pointers 31, 32 correspond with maximum and minimum permitted values of the distance between the rings 16 and workpiece 1. When the maximum or minimum values are exceeded the motor 28 is started. In an alternative arrangement, where such control is not used, the discs are moved towards the workpiece at a speed predetermined according to the intended cutting speed. A modified embodiment is illustrated in Figs.2 and 3 (not shown). A motor (52) raises and lowers the discs (16) and a motor (64) rotates them. The positions of protective liquid supply nozzles (22, 23) are adjustable. Circulation and filtering of the protective liquid and separation thereof from electrolyte and similar circulation of electrolyte are referred to.
Patent GB-1237183-A (GB)
Title: Belt drive, especially for combine harvesters
IPC: A01D69/06
Filed: 1970-04-03
Abstract: 1,237,183. Disengageable belt gearing. MASSEY-FERGUSON G.m.b.H. 3 April, 1970 [13 May, 1969], No. 15815/70. Headings F2L and F2Q. A disengageable belt drive for a combine harvester comprises a belt 23 passing round driving and driven pulleys 31, 33 having their axes at different levels, a support rail 32 adjacent the lower face of the lower run of the belt, and a jockey roller 11 movable between a belt tensioning position I and a slack belt position II, in both of which positions it is held by an overcentre spring, movement of the roller 11 to the belt-slack position causing movement of an arcuate plate 29 from a position I clear of the belt to a position II in which it engages the inner face of the belt to hold the belt clear of the pulley 31. The jockey roller 11 is mounted on an arm 12 movable about a fixed pivot 10 and connected by a link 15 to an arm 16 secured to a shaft 19. A second arm 16 parallel to the first and secured to the shaft 19 is connected by a rod 21 to a hand lever 22. An arm (17) (Fig. 2, not shown) secured to shaft 19 is pivoted to an over-centre spring strut (25). An arm 26 secured to shaft 19 is connected by a rod 27 to an arm 28 carrying the arcuate plate 29 and pivoted about the shaft 30 of the pulley 31.
Patent GB-1425382-A (GB)
Title: Saw guides
IPC: B26D1/14
Filed: 1973-04-03
Abstract: 1425382 Guide for rotary saw HAWKER SIDDELEY CANADA Ltd 29 March 1974 [3 April 1973] 15853/73 Heading B5L Guide apparatus for a rotary saw of the type having a circular saw blade 10 freely movable longitudinally of a drive arbor 11 comprises a pair of guide plates 18, 19 adapted to be mounted on opposite sides of the saw blade, the plates 18, 19 having a plurality of spiral grooves 25 extending across the guide faces, the grooves having leading ends which open out of at least one edge of each of the plates so that rotation of the saw blade induces a flow of air into the grooves and the grooves being effectively closed at their trailing ends so as to develop air cushions between the saw blade and guide plates. In the embodiment shown the grooves 25 are provided in intersecting pairs, extending from the outer and inner ends of the plate with shallow grooves 29 connecting adjacent pairs and a groove 31 leading from the final pair to the adjacent trailing edge 18À2 of the plate; this construction assists the clearance of saw dust from the grooves. Liquid lubricant, e.g. water or oil may be supplied to the guide plates through conduits 32, passages 33 and ports 34. In alternative embodiments (Figs. 3, 4, not shown) the spiral grooves are non-intersecting and extend either from the outer edge of the plate inwardly to closed trailing ends close to the inner edge or vice versa. In the latter construction (Fig. 4) liquid lubricant may be supplied through the arbor and sprayed towards the open ends of the grooves.
Patent GB-279385-A (GB)
Title: Improvements in electric switches for motor vehicles
IPC: B60Q1/14
Filed: 1927-06-15
Abstract: 279,385. Rosenow, M. Oct. 23, 1926, [Convention date]. Retractive switches ; switches, mechanical, without quick action ; regulating switches.-The steering-wheel of a motor vehicle is fitted with a principal switch ring 17 adapted to be depressed to sound the electric horn, and two auxiliary switch rings 22, 21 mounted on the principal ring and adapted to be rotated to operate respectively a direction indicator and a dimming switch for the head lights. The principal ring 17 carries a flange 8 adapted to be depressed into engagement with contacts 6 against the action of springs 11 to close the horn circuit The ring 22 carries three contacts 23, Fig. 4, and when rotated one way or the other brings the middle contact 23 into bridging engagement with a contact 26 and one of two contacts 26' and brings one of the outer contacts 23 into engagement with the other contact 26<1> thereby sending the current in one direction or the other through an indicator and illuminating a " left " or "right " sign. The ring 21 carries a contact 27 and rotates it over contacts 28 connected to tappings of a resistance 31, Fig. 5.
Patent GB-794489-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J75/00
Filed: 1955-12-29
Abstract: 794,489. Steroids. UPJOHN CO. Dec. 29, 1955 [Jan. 31, 1955], No. 15957/57. Divided out of 794,485. Class 2 (3). The invention comprises a 2-lower alkyl-11#- hydroxy - 21 - oxy - 4,17(20) - pregnadien - 3- . one having the formula wherein R is hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing from 1-12 carbon atoms inclusive and lower alkyl contains from 1-8 carbon atoms inclusive, and a process for the production thereof, which comprises the steps of (1) alkylating the alkalimetal salt of a compound having the formula wherein R is as defined above, R<SP>1</SP> is hydrogen, trifluoromethyl, lower alkoxy or a carbolower alkoxy group, with a lower alkyl halide, wherein the halogen is chlorine, bromine or iodine, to produce a 2-carbonyl-2-lower alkyl- 11# - hydroxy - 21 - oxy - 4,17(20) - pregnadien- 3-one; (2) removing the 2-carbonyl group of the latter thus-produced compound with an alkali metal base together with water or a lower alkanol and if desired, acylating the 2-lower alkyl - 11#,21 - dihydroxy - 4,17(20) - pregnadiene - 3 - one, so obtained, to produce the, corresponding 21 - acyloxy compound. The initial alkali-metal salt of the 2-carbonyl-11#- hydroxy - 21 - oxy - 4,17(20) - pregnadien - 3 - one is obtained by condensing 11#,21-dihydroxy- 4,17(20-pregnadien-3-one or 21-ester thereof with a dialkyl ester of oxalic acid, or carbonic acid or an alkyl ester of trifluoroacetic or formic acid in the presence of a condensation catalyst, e.g. sodium methoxide, sodium ethoxide, sodium isopropoxide, potassium t-butoxide, lithium methoxide, the alkali metals, the alkali-metal hydrides, alkali-metal amides and triphenyl methyl sodium. Alkylation is effected by means of an alkyl halide, e.g. methyl iodide, in the presence of an alkylation catalyst, e.g. sodium methoxide, lithium methoxide, potassium t-butoxide, alkali metals, and alkali metal amides, hydrides and carbonates. The 2- carbonyl group, i.e. formyl, carboalkoxy, trifluoroacetyl, or alkoxyalkyl may be split off by the alkali metal alkylation catalyst in the presence of water or a lower alkanol. Examples describe the production of 2-lower alkyl-11#- hydroxy - 21 - oxy - 4,17(20) - pregnadiene - 3 - ones wherein the lower alkyl group is methyl, ethyl, propyl, butyl, amyl, hexyl, heptyl and octyl and in which the 21-hydroxy group is esterified with an acyclic acid, an aryl, aralkyl or alkaryl acid, a dibasic acid, an amino acid, hetero-substituted acids, carbamic acids, and heterocyclic acids, 21-ethers, 21-thioesters, 21- thione esters, 21-imido derivatives of acetyl esters and 21-sulphonyloxy esters. Specification 749,199 is referred to.
Patent GB-272937-A (GB)
Title: Improvements in or relating to process for manufacturing tubular farinaceous rolls
IPC: A21C3/00
Filed: 1927-06-16
Abstract: 272,937. Haskell, C. R. June 21, 1926, [Convention date]. Moulding confectionery.- A tubular head or cake roll is formed by rolling a core over a lump or dough supported upon a platform so as to roll the dough around the core and unite the ends. As shown a tubular core 2 having longitudinal corrugations is rolled over the dough lump 4 supported by a platform 4<1> and the dough is allowed to remain on the core for raising and baking and is then withdrawn. A double core is employed having the two portions spaced by a disc 8 which engages the platform 4' and determines the diameter of the rolls. The core is supported during raising and baking by pins 12 projecting from end plugs 11 which pins engage recessed supports in the oven. Fig. 6 shows a finished roll.
Patent GB-783259-A (GB)
Title: Improvements in and relating to dual-voltage alternating current motors
IPC: H02K17/04
Filed: 1956-05-24
Abstract: 783,259. Capacitor motors. GENERAL ELECTRIC CO. May 24, 1956 [May 24, 1955], No. 16115/56. Class 35. In dual-voltage split-phase motors it is usual to connect the two stator pole-windings in series for the high voltage and in parallel for the low voltage, the starting winding being thus in parallel with one only or with both main windings respectively. This unequal excitation of the main pole-windings in the first case produces a dipped starting torque which is alleviated, according to the invention by putting part of each winding on each pole. As shown, main-winding 8 has concentric turns 37, 38, 39, 40 connected in series with turns 46 on the opposite pole. Similarly, the opposite main winding 9 has concentric turns 41, 42, 43, 44 connected in series with turns 48 concentric with winding 8. Quadrature starting windings 11, 12 are provided as usual.
Patent GB-128950-A (GB)
Title: Improvements in the Construction of Propellers.
Inventor: LOUIS DE MONGE
IPC: B64C11/20
Filed: 1919-06-26
Abstract: 128,950. Monge, L. de. June 28, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Screw propellers.-A screw propeller for aircraft is constructed with blades inclined forwardly, Fig. 1, from two shaped blocks a, b, which are united either in the plane indicated in Fig. 2, which is parallel to the axis of rotation but at an angle to the blade axes, or along two parallel planes interrupted by the hole in the boss. A grooved, tongue, or similar joint is employed and the two parts are solid or laminated.
Patent GB-109695-A (GB)
Title: Improvements in the Manufacture of Mantles for Incandescent Gas Lamps.
Inventor: KEITH JAMES
IPC: F21H1/00
Filed: 1916-11-10
Abstract: 109,695. Keith, J., Keith, G., and Robin, J. T. Nov. 10, 1916. Mantles.-The length of stitch in the knitted fabric forming the base of an inverted mantle is gradually shortened towards the lower end of the mantle while, in order to facilitate the formation of the closed end, the last rows of stitches are relatively longer.
Patent GB-472191-A (GB)
Title: Improvements in and relating to objectives suitable for photographic purposes
IPC: G02B13/00
Filed: 1936-06-09
Abstract: 472,191. Lenses. HASSELKUS, J. W., and RICHMOND, G. A. June 9, 1936, No. 16150. [Class 97 (i)] A wide-angle photographic objective comprises a negative meniscus lens on each side of and adjacent to the diaphragm and three or more positive meniscus lenses disposed about the diaphragm, the concave surfaces of all the lenses being turned towards the diaphragm and the radii of curvature of all the lens surfaces being less than the focal length of the complete objective. The negative lenses have the same or substantially the same power and their refractive index differs from those of the positive lenses by at least 0À05. Data are given for the example shown having three positive menisci and giving a field of view of about 100‹ with an aperture of F/5À6. In this form the power of' the single positive lens in front of the diaphragm is greater than that of either of the two positive lenses behind the diaphragm. The objective may alternatively have four positive lenses, two on each side of the diaphragm, in which case the powers of at least two of the corresponding positive lenses are unequal. Specification 423,156 is referred to.
Patent GB-907349-A (GB)
Title: Improved magnetic printer
IPC: G03G19/00
Filed: 1960-05-06
Abstract: 907,349. Typewriters. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 6, 1960 [May 28, 1959], No. 16152/60. Class 100 (4). A typewriter comprises forming the characters as a magnetic image in a tape 2, powdering ink on the tape as it moves from the magnetic writing position to a print position where a line of printing is transferred to a permanent record 9 by pressure of bars 15, 16. The characters are formed on the tape 2 by a magnetic device comprising two non-magnetic discs 35, 36, Fig. 3, into which magnetic type inserts 4 are arranged, the one in disc 36 being the mirror image in the insert immediately above, in disc 35. The tape 2 travels in an air-gap between the two discs and an image is formed when a core 40 is energized by the discharge of a condenser 91 upon the operation of the appropriate key 1. A compensatory magnetic insert 39 balances the flux passing through the type character. The condenser 91 is controlled by a thyratron 88, a relay R1 and a commutator arrangement 49-52 driven in synchronism with the magnetic type-wheel. The rotating arm 48 travels at twice the speed of the wheel 3 since lower-case characters occupy one half of the perimeter and capital letters the other. The thyratron is fired when the arm 48 reaches that contact 50 that is connected to a charged condenser 81 because the appropriate key has been depressed. Further rotating arms and contacts on the type wheel shaft 32, in conjunction with the operation of a space-shift key 77, determine in which revolution of the arm 48 printing is to occur and thus determines the case of the character printed. Letter-spacing.-The tape is letter-spaced by the operation of a pawl 100 by a magnet 101; this allows the tape to be fed by a shaft 97 connected through a friction clutch 96 to a drive 95 from a motor 24. Tabulating.-The tape with the characters printed thereon may be moved to a particular position with respect to the permanent record 9 by the operation of a tabulation key 12. This causes a condenser 135 to operate a relay R3 and pawl 100 is released due to operation of magnet 100 which is held through contacts 144. The relay is released in accordance with predetermined stops fitted in holes 140 in a disc 139. Inking and transferring from tape to permanent record.-The magnetic image on the tape 2 is inked in a device 6, Fig. 5, not shown, which blows a metered quantity of ink in the form of magnetic powder over the tape. A screen 8 reflects the line of printing so the operator may see it, but allows vision through it on to the record 9. The line of characters is transferred to the record by pressure bar 15 and heated pressure bar 16 which are pressed together by a mechanism operated from a cam 175 driven from a clutched drive 177-180 controlled by a print key 14. Paper guides.-At the same time as the pressure bars close, the tape 2 is tilted from a horizontal plane to a vertical one by guide mechanism 150, 151, 162 and cam 164. See Fig. 7 (not shown).
Patent GB-417842-A (GB)
Title: Improvements connected with the picking and take-up motions of looms for weaving
IPC: D03D49/24
Filed: 1934-05-31
Abstract: 417,842. Loom picking-mechanism. CAWTHRA, W., and CAWTHRA, M., 14, Clevedon Place, Ovenden Road, Halifax, Yorkshire. May 31, 1934, No. 16209. Addition to 409,050. [Class 142 (iii).] The bell crank levers 17, which are connected by a rod 20 and operate the vertical spindles 11 controlling the clutches 10 of the picking motions, instead of being operated from the tappet shaft as described in the parent Specification, are operated from a slotted arm 57 fixed to the dobby T-lever 59 or its shaft. This arm operates an adjustable housing 61 on a rod 53 adjustably connected to one of the bell-crank levers 17. Cushioning springs 62 bear on the housing and on adjustable nuts 63 and washers whereby the rod 53 is yieldingly operated.
Patent GB-1438087-A (GB)
Title: Device for the stepwise displacement of a workpiece holder
IPC: A46D3/06
Filed: 1974-04-11
Abstract: 1438087 Brush making machines G B BOUCHERIE 11 April 1974 [13 April 1973] 16257/74 Heading A4K [Also in Division F2]  Stepwise displacement of the work holder of a brush filling and/or drilling machine is obtained when a lever 2 having one end connected to the work holder preferably through a pawl-and-ratchet is drivingly connected to a cam-driven lever 1 through one or more pins 4, 5, 19 or 6 extending perpendicularly to the driving lever and axially moveable into engagement with the undersurfaces of the ends of two levers 11, 15 connected through a further lever 8 to the driven lever. The driving and driven levers 1, 2 have a common spindle 3 journalled on a fixed plate 14 on which the levers 8, 11 and 15 are supported. By moving one or more of the pins 4, 5, 19 or 6 under a lever or levers it is possible to obtain fifteen displacements of the lever 2 and hence the work holder. In a further embodiment Fig. 1 (not shown) a maximum of seven displacements of the work holder can be obtained by omitting lever 15 and pin 19 and mounting pin 6 for direct engagement with the undersurface of the end (10) of lever 8. Movement of the pins may be effected by compressed air.
Patent GB-439671-A (GB)
Title: Machine for edging double-edged razor blades on an endless conveyor belt
IPC: B24B3/48
Filed: 1935-06-05
Abstract: 439,671. Grinding razor blades. KRATZ, P., 43, Ritterstrasse, Solingen, Germany. June 5, 1935, No. 16267. [Class 60] In a machine for edging double edged razor blades, carried during operation by an endless belt past grinding-wheels above and below the blades, each blade lies with the already ground edge against a stop carried by chains moved with the belt. The blades are carried by a belt c running over a driving wheel b, and chains l, m on opposite sides of the belt are provided, running on sprocket-wheels g, h, k and travelling at the same speed as the belt c. The blades rest with their holes over pins on the belt and the belt moves over a guide strip x, the blades being guided by strips u, v and with their already ground edges in contact with stops s on the chains, the stops being guided by movement of the chains over a surface n with an adjustable strip t ; the griuding is performed by wheels A ... E. The chains l, m are driven through gearing g, w, r from the shaft p of the wheel b.
Patent GB-116218-A (GB)
Title: An Improved System for the Detection of Outbreaks of Fire and also for Extinguishing and Checking such Outbreaks.
Inventor: BIGGERS FREDERICK HENRY
IPC: A62C35/64
Filed: 1917-11-07
Abstract: 116,218. Biggers, F. H., and Biggers, A. Nov. 7, 1917. Smoke-pipe alarm systems.-In fire detecting and extinguishing apparatus of the kind comprising an observation chamber 3, tubes 4 leading tc different compartments, a fan or pump 9 to draw air through the pipes, and means for connecting the several pipes with a pipe containing steam, carbonic acid, &c., the pipes 4 are provided with fans 11 at their mouths in order to indicate by their rotation whether the passage is free. Smoke issuing from one of the pipes indicates a fire ir the compartment with which it is connected which may be extinguished by connecting the pipe to a source of steam, or a supply of carbonic acid contained in the cylinder 7 through the hose E and union 12.