baber/WOPTO huggingface dataset:
Patent GB-670670-A (GB)
Title: Improvements in or relating to tractor hoes
IPC: A01B35/14
Filed: 1949-08-31
Abstract: 670,670. Agricultural implements. RUSSELL'S (KIRBYMOORSIDE), Ltd., and RUSSELL, G. E. Nov. 28, 1950 [Aug. 31, 1949]. No. 22602/49. Class 6(i)] A tractor hoe suspended between the front and rear wheels of a tractor comprises a main frame 24 from which is suspended a sub-frame 28 carrying adjustable hoe blades 30. A shaft 5 is connected to a hydraulic ram and has mounted thereon a lever 6 which moves a lever 8 through a link 7. The lever 8 acts to operate a second lever 17 which is pivotally connected through a link 26 with the main frame and to which is pivotally connected a second link 18 pivotally connected to a drop-arm 19 which is pivoted on a part 21 on the tractor and which pivotally supports the main frame through a bar 22. Movement of the lever 6 causes the mainframe to be raised or lowered, the second lever 17 and second link 18 lying in a deadcentre position relatively to each other when the main frame is lowered to prevent upward movement of the main frame. As shown, the tools are raised by the hydraulic ram and lowered by a spring 11, a stop 27 limiting the downward movement of the frame 24. The sub-frame 28 is suspended by means of links 34, 35, the links 35 being provided with a spring 37. To maintain the links in a rearwardly inclined position, the upper end of each pair of links 35 is provided with a pin 39 engaging in a slot 40 in a link pivotally connected to a lug 42 on the bar 22. Trailing hoes 46 are mounted on arms 44 pivoted on the tractor and raised and lowered by the hydraulic ram through lever 48 mounted on the shaft 5 and a connection rod 49.
Patent GB-321224-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T15/04
Filed: 1928-08-03
Abstract: 321,224. Westinghouse Brake & Saxby Signal Co., Ltd., (Westinghouse Air Brake Co.). Aug. 3, 1928. Addition to 214,189. Fluid-pressure. - Brake-pipe venting valve mechanism for fluid pressure braking apparatus is adapted to vent the pipe first at a slow rate and subsequently at a higher rate, the venting at the higher rate being automatically initiated when a predetermined fall of pressure in the pipe has been effected. In normal conditions air from the main reservoir 2 flows through a feed valve 36 and passage 40 to the chamber 35 of an application valve 37 and leaks through a port 41 in the valve piston 33 to the chamber 32. The chamber 32 is connected by a passage 38 to an electrically controlled valve (not shown) which is normally closed so that the valve 37 is held in the position shown by the spring 34. Air from the chamber 85 is thus supplied through passage 42, passage 43 of the usual rotary valve 1, and chamber 9 of the equalizing discharge valve piston 6, to the brake pipe 10 and by passage 45, valve cavity 46 and passage 19 to the equalizing reservoir 8 and the chamber 7 of the piston 6. The upper chamber of a diaphragm 16 'controlling a valve 25 is also under pressure through the passage 19 and as the chamber 20 below this diaphragm is open to atmosphere through passage 47, valve cavity 48, and passage 49, the valve 25 is held closed against the action of the spring 30. If the traffic conditions become unfavourable, the electrically controlled valve is de-energized so as to vent the chamber 32 of the valve 37 to atmosphere whereby the valve is shifted to the lower position in which it vents the brake-pipe 10 through passage 11, cavity 48, passage 49 and choke-plug 50. The simultaneous venting of the chamber 9 of the equalizing piston 6 causes the piston to move downwardly against the action of a spring 14 so that the pressure in the upper chamber 7 and in the equalizing reservoir 8 is able to equalize through a groove 13 with the falling brake-pipe pressure. When the pressure in the brake-pipe and equalizing reservoir 8 acting on the upper side of the diaphragm 16, has fallen to a value sufficient to permit the spring 30 to lift the valve 25, the reservoir 8 is connected to a reductionlimiting reservoir 21 by the passage 19, valve cavity 46, and passages 51, 22. Since the brakepin pressure does not reduce so rapidly through the plug 50 as the pressure in the chamber 7 by connection with the reservoir 21, the equalizing piston 6 is moved upwardly, thus venting the brake-pipe through the valve 12 in addition to the port 50. When the brake-pipe pressure in the chamber 9 has equalized with the reduced equalizing reservoir pressure in the chamber 7, the piston 6 recloses the valve 12 further venting of the brake pipe being thus prevented except through the port 50. The interval during which slow venting of the brake-pipe is effected being dependent upon a predetermined fall of pressure is dependent also upon the length of the pipe and of the train.
Patent GB-461318-A (GB)
Title: Improvements in aeroplanes or flying machines
IPC: B64C39/00
Filed: 1935-08-10
Abstract: 461,318. Aeroplanes. BEADON, R. R. Ó COURT. Aug. 10, 1935, No. 22616. [Class 4] A tandem wing aeroplane has a larger number of planes aft of the centre of gravity than forward thereof, the aft set of planes being backwardly staggered. When more than one forward plane is fitted, the planes are forwardly staggered. The arrangement is stated to be such that the machine is capable of descent in the manner of a parachute and in this condition the centre of pressure is arranged to be slightly displaced either fore or aft of the centre of gravity. In addition to being staggered as shown inherent stability may be increased by setting certain of the planes at a longitudinal dihedral angle. Figures 1 and 2 show a machine comprising an after set of five backwardly staggered planes a and a forward set of two forwardly staggered planes b supported by fins c at the sides of body d. The planes may be of equal or unequal span and may be flat or curved and all or some may be of the arcuate form described in Specification 19798/10, [Class 4]. Vertical side panels such as e may be fitted and be joined to the body by inclined surfaces f. The upper ends of panels e and of fins c may extend above the planes as at o. The body is flat sided with an arcuate under surface and has a top which is flat in the middle and arcuate at the ends. Oblique rudders l are provided. The position of the centre of gravity may be adjusted by transferring fuel from an auxiliary tank m to a main tank. The whole or part of one or more forward or after planes may be adjustable for control in pitch. Two running positions are provided by a central pair of wheels g and fore and aft single wheels k, h. Wheel h may be substituted by a laminated spring skid having a hook or claw shaped end for braking purposes. In a modification, Figs. 4 and 5, a forward set of wings b without side panels has the wing chord reduced centrally as shown at b<1>. Vertical fins o are fitted at the tips of wings b. The top and bottom surfaces of the body are of concave arcuate form. Additional supporting surfaces may be disposed in the neighbourhood of the centre of gravity. According to the Provisional Specification tanks may be provided at the tail and charged with ballast or fuel which is discharged when the machine rises into the air for instance by means of a valve held closed whilst the tail skid remains loaded. A central pair of planes may be fitted and set at a positive angle of incidence, the front and rear planes being at zero or negative incidence during flight.
Patent GB-276993-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H1/16
Filed: 1927-08-29
Abstract: 276,993. Carels, H. Aug. 31, 1926. [Convention date]. No Patent granted (Sealing fee not paid). Switches, quick-action; contacts. - The movable contact member of a rotary switch comprises an insulating member 5 having recesses 6 in which are housed movable terminals 15, contact balls 8 also situated in the recesses 6 and springs 9 pressing the terminals. 15 and through them the contact balls 8 into close engagement with the fixed contacts 3. The terminals 15 as well as the fixed contacts 3 are formed with spherical recesses to receive the contact balls 8. The invention is shown applied to a step-by-step switch provided with quick-action mechanism 11.
Patent GB-1344604-A (GB)
Title: Method for preparing a-aminobenzylpenicillin
IPC: C07D499/00
Filed: 1972-05-15
Abstract: 1344604 Preparing α -aminobenzylpenicillin VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT ANTIBIOTIKOV 15 May 1972 [18 May 1971 24 April 1972] 22679/72 Headings C2A and C2C α-Aminobenzylpenicillanic acid is produced by acylating a carboxyl-protected 6-aminopenicillanic acid derivative of Formula (IV) or a salt thereof, wherein A is a group selected from and -SiR 3  (R being a C 1 -C 4  alkyl group and R<SP>1</SP> being a C 1 -C 4  alkyl group, a haloalkyl group, an aryl group or an aralkyl group), and B is a hydrogen atom or when A is -SiR 3 , B is R 3 Si-; with an activated ester of N-substituted D(-)α-aminophenylacetic acid, said ester having the Formula (V) wherein Z is a group selected from and X is a hydrogen atom or a 2-pyrimidyl group, in the presence of acetic acid in an organic solvent to eliminate B and the activating esterifying group; and then hydrolysing the resulting acylaminopenicillin compound to remove the protecting groups A and Z, and if desired converting the thus produced α-aminobenzylpenicillanic acid into a salt thereof. The carboxyl-protected 6-aminopenicillins (IV) wherein A is a group other than a silyl group are acylal derivatives and are prepared by reacting an N-protected 6-amino penicillanic acid (e.g. Penicillin G or V, other 6-acylated penicillanic acid or organic or inorganic acidaddition salts of 6-aminopenicillanic acid) with an α,#-unsaturated ether of formula followed by N-desacylation to remove the N- protecting group. In the case when the groups A and B in the compounds (IV) are both trialkylsilyl groups, the said compounds are prepared by reacting 6- aminopenicillanic acid with more than two gram molecules of an N-trialkylsilyl dialkylamine and distilling off the resulting dialkylamine. Activated esters of Formula (V) are prepared by protecting the α-amino group of D(-)α- aminophenylacetic acid by reaction with furfuryl chloroformate, o-nitrophenyl sulphonyl chloride or benzoyl acetone and then reacting the N-protected product with N-(2-pyrimidyl)- 1 -phenol-4-sulphonamide or 1-phenol-4-sulphonamide.
Patent GB-1001600-A (GB)
Title: Motor grader blade construction
IPC: E02F3/76
Filed: 1964-06-02
Abstract: 1,001,600. Earth grading machines. CATERPILLAR TRACTOR CO. June 2, 1964 [March 9, 1964], No. 22724/64. Heading E1F. A grader blade structure for a motor grader comprises a mouldboard 13 provided with a striker blade 24, walls 18 extending forwardly from opposite ends of the mouldboard, and a cutting blade 19 extending between the lower forward portions of the walls 18. An adjustable connector 22 extends between the bladecarrying circle 12 of the grader and a beam 20 spanning the forward upper portions of the walls 18.
Patent GB-1274843-A (GB)
Title: Improvements in air release and ventilating valves
Inventor: DOUGLAS JOHN MCGREGOR
IPC: F16K24/04
Filed: 1968-05-14
Abstract: 1,274,843. Valves. GLENFIELD & KENNEDY Ltd. 12 May, 1969 [14 May, 1968], No. 22769/68. Heading F2V. An air release valve has an inlet 10 and an outlet 11 coaxial with one another and of approximately the same cross-sectional area, and a float valve element 1 proportioned to function as an adherent disc with respect to the inlet and having a cylindrical body with two end faces 2 and 3, at least one of which projects axially from the body by a distance not exceeding the radius of the cylindrical body, the float being movable in the chamber so that one face is directly engageable with the outlet, and the other face cannot engage the inlet because of a cage 8. The end faces may have different forms, e.g. they can be flat spherical or conical. They can also include an intermediate portion shaped as a zone of a sphere, or a frustum of a cone.
Patent GB-164988-A (GB)
Title: An improved electromagnetic device for withdrawing metal splinters from the eye
IPC: A61B17/52
Filed: 1920-07-31
Abstract: 164,988. Gatti, A. July 31, 1920. Eye instruments and appliances.-For removing a metal splinter from the eye, an electromagnet a is used in combination with a mirror b, by means of which the splinter may be located, and extracted by the patient when the switch c is closed. There may be a central aperture in the mirror opposite to the pole of the magnet, or the pole may.project through the aperture.
Patent GB-808929-A (GB)
Title: Improvements in or relating to signalling devices
Inventor: SHANKLAND JAMES
IPC: G10K1/062
Filed: 1956-07-24
Abstract: 808,929. Electric bells. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. June 7, 1957 [July 24, 1956], No. 22817/56. Class 13. The hammer 5 oscillates within a notch 4 in the periphery of a gong 1 so as to strike alternately opposite sides of the notch. The gong 1 is free to rotate about its securing screw 3, so that each side of the notch 4 receives an equal blow from the hammer 5.
Patent GB-685083-A (GB)
Title: Improvements relating to cast iron
IPC: C22C37/04
Filed: 1950-09-18
Abstract: In alloyed or unalloyed hypocutectic grey cast iron at least 25 per cent of the graphite in the iron as cast is rendered spheroidal by the presence in the iron of 0.015-0.04 per cent of Mg and 0.015-0.16 per cent Ce, the sum of Mg and Ce contents being at least 0.035 per cent.  Such an iron may have the following composition: C 1.7-3.8 per cent, Si 1.2-7.0 per cent, P up to 0.5 per cent, S up to 0.02 per cent, Cu 0-2.0 per cent, Ni 0-10.0 per cent, Mn 0.05-2.0 per cent, Cr up to 1.0 per cent, Mo up to 1.0 per cent, V up to 0.05 per cent. Fe, and impurities, together with the above specified proportions of Mg and Ce forming the remainder.  Where the molten iron contains more than 0.02 per cent S, this content may be reduced to less than 0.02 per cent before casting, e.g. by treatment with Mg.  The iron is inoculated before being cast.  Specification 630,070 is referred to.
Patent GB-500300-A (GB)
Title: Improved manufacture of substances of high molecular weight
IPC: C08G63/82
Filed: 1937-08-20
Abstract: 500,300. Polyhydric alcohol-polycarbozylic acid condensation products. TENNANT, W. J. (Henkel & Cie, Ges.) Aug. 20, 1937, No. 22927. [Class 2 (iii)] Resins are prepared without formation of water by reacting anhydrides of polybasic acids with alkylene oxides, which may contain additional functional groups. There are specified : anhydrides-of phthalic, suceinic, diglycollic and thiodiglycollic acids, or mixtures of such anhydrides ; alkylene oxides-ethylene, pro pylene, butylene, isobutylene, and trimethylene oxides, or mixtures thereof, or epichlorhydrin. The products are soluble in chlorinated hydrocarbons, e.g. chloroform, in acetone, and in ethyl acetate; and may be used in coating and plastic compositions, plasticizers, adhesives cements, threads, and insulating masses. In examples: phthalic, succinic, or diglycollic anhydride is condensed with ethylene oxide ; phthalic anhydride is condensed with ethylene oxide in dioxane solution.
Patent GB-957217-A (GB)
Title: Moulding of plastics or rubber articles
IPC: B29C41/14
Filed: 1961-06-24
Abstract: 957,217. Moulding thin-walled articles by spraying. E. MERCER. June 25, 1962 [June 24, 1961], No. 22928/61. Heading B5A. In a method of moulding a thin-walled article of synthetic plastics material, or latex, shaped formers 34 are progressed on an endless conveyer 25 through a liquid curtain of the material, formed by spraying the liquid through adjustable nozzles 10, each former being turned whilst being coated to ensure that the material is applied all over its surface. The conveyer 25 carries carriages 30 from which depend pivoted supports 31 comprising a pulley 33 and a projecting rod 32 to which the former 34 is attached. The pulley 33 engages with a rail 35 below and to one side of the conveyer track 26 to rotate the former 34 and to cause it to project substantially horizontally whilst passing the coating station. Excess material is collected in a trough 19 and is recirculated through a header tank 12 where it is deaerated. Specification 957,216 is referred to.
Patent GB-803050-A (GB)
Title: Improvements in or relating to lubricating arrangements for bearings of rotatable shafts
Inventor: MORLEY FREDERICK WILLIAM WALTO
IPC: F01D25/18
Filed: 1954-08-06
Abstract: 803,050. Lubricating. ROLLS-ROYCE, Ltd. July 20, 1955 [Aug. 6, 1954], No. 23001/54. Drawings to Specification. Class 12 (3). [Also in Group XXVI] The bearings of a gas turbine high and low pressure concentric shafts are lubricated by oil which is supplied to the shaft interior, near the bearings, and which flows radially outwards to the bearings, through ducts, under centrifugal action. The oil is brought by a fixed oil pipe to a point on the centre line of the shaft assembly but spaced from the end of the assembly. Connection between the fixed pipe and shaft assembly is effected by a transfer pipe normally jointed at both the shaft assembly and the fixed pipe. The oil, in moving radially outwards, passes through two concentric bearings associated with the shafts of the low and high pressure blending respectively. Fixed air cooling is simultaneously effected by the air current through the interior of the inner shaft and a separate flow of air over the exterior surface of the outer shaft carrying the high pressure blending disc which is also cooled.
Patent GB-586244-A (GB)
Title: Compressed air-blast electric circuit breakers with a plurality of series connected breaking gaps
IPC: H01H33/14
Filed: 1944-11-21
Abstract: 586,244. Air-break switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Nov. 21, 1944, No. 23103. Convention date, Nov. 24, 1943. [Class 38 (v)] In a compressed air-blast high voltage circuitbreaker having a plurality of series-connected breaking gaps arranged on an insulator 11 common to them all, the different breaking gaps are in cylinders 5-7 mounted on the side of a central insulating column 12-14 so that each cylinder may be dismounted for inspection or repair without disturbing the other cylinders. The cylinders 5-7 are supported by metal members 8-10 which also separate the insulators 12-14. The gaps are opened by passing compressed air through insulator 11 to the upper face of contact pistons 27-29, at the same time opening valve 37 to atmosphere, so that the pistons are allowed to move downwards. To reclose the breaker, compressed air is passed through valves 37 and 42 to equalize the pressure on both sides of the pistons, which are then moved upwards by springs 43-45. In a modification Fig. 2 (not shown), the valve 37 is replaced by three separate valves, one per breaking gap, which are actuated simultaneously.
Patent GB-657606-A (GB)
Title: Thread reel
IPC: B65H75/14
Filed: 1949-09-07
Abstract: A thread reel comprises two identical semicylindrical halves moulded from a synthetic thermoplastic material, each half having pins and sockets which resiliently interengage and hold the two halves together.  Suitable thermo-plastic synthetic materials are polystyrene, polyethylene, cellulose acetate and cellulose ethers.
Patent GB-695294-A (GB)
Title: Improvements in or relating to pistons provided with cooling devices for high-speed engines
IPC: F02B3/06
Filed: 1950-09-21
Abstract: 695,294. Pistons. MAYBACH, K. Sept. 21, 1950 [March 24, 1950; May 10, 1950], No. 23228/50. Class 122(i) The piston head is formed as a disc 92 secured to the body by screws 121, and having annular grooves 97, 98, 99 etc. for the circulation of cooling fluid supplied by the pipe 112 and exhausted through pipe 113. Piston rings are carried by the head in grooves 108, and also by the body in grooves 109 with a bearing surface 128 between. The gudgeon pin bearings 91 are carried by lugs 125 from the head, and are not attached directly to the skirt. The head may be formed in two parts 92, 94 shrunk on each other. In a modification (Fig. 4) excessive cooling of the combustion chamber 65 is prevented by a metal shield 69 which restricts cooling oil to space 72 on one side only of it.
Patent GB-359085-A (GB)
Title: Improvements in or relating to train control arrangements
IPC: B61L3/22
Filed: 1930-08-01
Abstract: 359,085. Inductive train control systems. VEREINIGTE EISENBAHNSIGNALWERKE GES., Siemensstadt, Berlin. Aug. 1, 1930, No. 23262. Convention date, Aug. 13, 1929. [Class 105.] In train control systems which use signalling current in the rails to act inductively on the train apparatus and wherein the insulation resistance of the track is small, the signalling current is supplied at a plurality of points in each block section. As shown in Fig. 1 signalling current is supplied throughout the block B when a contact 10 controlled by the wayside signal or from the signal box is closed to energize transformers 6, the secondaries 8 of which each supply an insulated subsection, the current flowing in parallel in the two rails 1 thereof. With the transformers 6 oppositely connected so that adjacent ends of each subsection are at the same instantaneous voltage the insulation of the subsections is not necessary. Such an arrangement is shown in Fig. 6 where each transformer 6 supplies two subsections ; in this case the line 13 is common to the main supply transformer 11 and to the primary 7 and secondary 8 of each transformer 6. In the form shown in Fig. 4, the current from the main transformer 11 passes through the rails and through the secondaries 8 of booster transformers 6 situated between each insulated subsection and returns through the primaries 7 of the booster transformers which are bridged by resistances 12 to compensate for the magnetization current. The booster transformers. have a ratio of approximately 1/1. Specifications 135,461 and 248,945, [both in Class 105, Railway signals &c.], are referred to.
Patent GB-1320263-A (GB)
Title: Gas turbines
IPC: F23D17/00
Filed: 1971-04-19
Abstract: 1320263 Gas turbine combustion chambers GENERAL ELECTRIC CO 19 April 1971 [2 Feb 1970] 23274/71 Headings F4T and TA2A1 Air swirler for the head end of a gas turbine combustion chamber comprises an annular body 1 having a face normal to the axis of the body and defining a hole 6 for a fuel nozzle, and having angled blades 3 around its periphery, the length "A" of the blades being less than four times the thickness of the trailing edge. Holes 8 are formed through the body 1 at alternate spaces 2 between the blades and direct air across the face of the body to keep the nozzle 7 free from the build-up of carbon particles. Further holes 11 are formed through the body at the remaining spaces 4 and communicate with a duct through which gaseous fuel is provided for one mode of operation of the engine. Alternatively the engine can be run on a liquid fuel which is supplied to a chamber 16 and is atomized as it passes through a nozzle 17. Combustion air enters the chamber through the slots 2 and 4, a fraction of the air passing through the holes 8, and the whole body of air being caused to swirl by the angle of the blades, the amount of air entering through the body is 5-10% of the total air required for combustion of the fuel. The effective mixing of the fuel and air allows a lean mixture to be used in order to reduce smoke in the exhaust without reducing the stability of the flame. The blades make an angle γ of 55-65 degrees, preferably 60 degrees with a plane normal to the axis of the body 1. The ratio of the length "A" of the blades to the width "B" of the slot is 1À15-1À85, when the combustion chamber diameter is about 15 inches. The gas holes 11 make an angle of 25-60 degrees, preferably 35 degrees with a plane normal to the axis. The air holes 8 make an angle of 25-35 degrees, preferably 30 degrees with a plane normal to the axis.