baber/WOPTO huggingface dataset:
Patent GB-286152-A (GB)
Title: Process of producing mercaptans of the furfuryl series
IPC: C07D307/42
Filed: 1927-07-25
Abstract: 286,152. Marks, E., C. R., (Internationale Nahrungs-und Genussmittel-Akt.-Ges.). July 25, 1927. Furfuryl disulphides and mercaptans are obtained by treating furfural or a derivative thereof with sulphides or sulphydrates of the alkalis, earth alkalis, or ammonia &c., and reducing. Examples are given of the preparation of (1) furfuryl-mercaptan by heating furfural with an alcoholic solution of ammonium sulphhydrate or sodium sulphide and hydrogen sulphide, and reducing the disulphide by means of amalgamated aluminium chips or activated aluminium (aluminium to which mercury chloride has been added), or by zinc dust and acetic acid, the zinc mercaptide formed being split up with oxalic acid, or by sodium in alcohol. The nitro benzoic acid ester is described; (2) alpha-methylfurfuryl mercaptan by allowing alpha-methylfurfural to stand in an alcoholic solution of ammonium sulphhydrate, and reducing the disulphide formed with activated aluminium or zinc dust and acetic acid. The pnitrobenzoic acid ester is described ; (3) alpha-oxymethylfurfuryl mercaptan by treating oxymethylfurfural with ammonium sulphhydrate in alcoholic solution and reducing the disulphide; (4) methoxymethylfurfuryl mercaptan by heating methoxymethylfurfural with an alcoholic solution of ammonium sulphide and reducing the disulphide. Specification 260,960 is referred to.
Patent GB-761708-A (GB)
Title: Improvements in and relating to carriages for guns and the like
IPC: F41A23/28
Filed: 1954-07-06
Abstract: 761,708. Wheeled gun carriages. VERWALTUNGSGES DER WERKZEUGMASCHINENFABRIK OERLIKON. July 6, 1954 [July 28, 1953], No. 19755/54. Class 92. A wheeled gun carriage is converted into a fixed position mount by raising the wheels 16, Fig. 1, relatively to tripod ground supports 6, this being effected by tilting upwardly a pivotally mounted fork-shaped draught pole 12 as shown in Fig. 4, the pole 12 being connected through linkage 19, 18, 17, 15 to the wheels. According to the invention springs 22 connected between the pole 12 and the upper gun carriage portion 7 are loaded during the tilting of the pole 12 but pass through a dead centre position shortly before the wheels reach their final position which is effected while partly unloading the springs 22. The pole 12 is pivoted to the upper gun carriage portion 7 at 50 and is formed with cranked arms 19 on which are pivoted the links 18 ; carrier arms 15 for the wheels are pivoted to the upper portion 7 at 13 and are connected to the links 18 via levers 17. The ends of the two arms are connected by a tubular piece 21, Fig. 3, in which are slidably arranged two bolts 25 urged apart by a spring 26 to engage in eyes 27 on the tripod supports 6 for locking the pole 12 in the travelling position. Pins 28 on the bolts 25 engage in slots 29 in the tube 21 and in order to unlock the pole 12 prior to tilting, a fork-shaped component 31 provided with oblique slots 33 also engaged by the pins 28, is pulled by means of a handle 32 so that the bolts 25 are pulled out of the eyes 27 and the pole 12 released. Fig. 4 shows the position in which the centre lines of the springs 22 have crossed the pivot 50, i.e. just past the dead centre position and the springs 22 now tend to tilt the pole 12 further in the anti-clockwise direction, further tilting being prevented however by abutments 30. The wheels are thus held up by the springs 22. A safety device Fig. 5 (not shown) prevents the pole 12 from being tilted downward from the firing position as shown in Fig. 4 where the wheels 16 are detached.
Patent GB-633164-A (GB)
Title: Improvements in or relating to fluid pressure power transmission systems
IPC: F01C21/08
Filed: 1947-07-24
Abstract: 633,164. Rotary engines. MANLY CORPORATION. July 24, 1947, No. 19888. Convention date, March 6, 1941. [Class 110(ii)] The inventions described in Specifications 627,924, 628,925, 628,926 and 630,527, have means whereby one or more vanetype motors may be operated by pressure fluid supplied by a single source, with the speed of each motor B controlled at will and independently of the speeds of the other motors. The speed of each motor B is varied and controlled solely by regulating the volume of fluid which is permitted to pass through each motor. Fig. 2 includes means to nullify the effects of changes in viscosity of the fluid on the operation of the control system. Fig. 1 shows two vane motors B, each having variable or constant displacement per revolution of its rotor, with line 45 supplying fluid to press the vanes outwards, and the lower-pressure 'fluid, after passing the restriction 70 in line 42, acting as working-fluid for the motor. Any means 71 may be used to vary the restriction 70 and thus alter the pressure ratio of lines 42 and 45. Pressure fluid from a source 42 passes to each motor through regulating means 50 comprising a differential piston 63 under pressure at its upper end by fluid from line 45, and at its lower end by fluid from line 42 and a spring 65. Fig. 2 includes compensating means for changes in viscosity comprising a regulating valve 501 under differential pressure at the ends. An auxiliary pump 83, supplied by the exhaust 43 from the motor B, supplies pressure fluid to an end 79 which, together with a spring 65<1>, forces the floating valve upwards. Lower-pressure fluid, after passing through a restriction 86, flows to the end 80, acting downwards on the valve. The lines 42. 45 and restriction 70 are arranged as in Fig. 1. The control valve 50 may be placed after the motor, in the system.
Patent GB-706910-A (GB)
Title: Improved apparatus for and method of treating hides and other sheet material
Inventor: GRIFFIN ROBERT HAMILTON
IPC: C14B1/10
Filed: 1950-08-10
Abstract: 706,910. Photo-electric control systems. TANNERS RESEARCH CORPORATION. Aug. 10, 1950, No. 19926/50. Class 40 (3). [Also in Group VIII] In apparatus for treating individual sheets of material, e.g. hides (see Group VIII), the operation of the treating devices is controlled by means of photo-electric cells, the light beams of which are interrupted by the passage of a sheet of material. As shown cells 34, 35 are connected to a solenoid switch 39 in circuit with motors 42 and with solenoids 40 which operate air valves 41. The motors 42 rotate cylindrical cutters and the valves 41 move the cutters into operative position for treating the surface of hides fed to the apparatus.
Patent GB-1476278-A (GB)
Title: Negative impedance repeater
IPC: H04B3/16
Filed: 1975-05-12
Abstract: 1476278 Negative impedance converters WESCOM Inc 12 May 1975 [13 May 1974] 19966/75 Headings H4R H3U and H3W A negative impedance converter, particularly for equalizing unloaded lines, includes a gain unit 26 having a constant image impedance across the audio band and an impedance correction unit 22 across the transmission line 20 to match the line impedance with the gain unit, the unit 22 comprising an active feedback circuit presenting a series combination of a frequency dependent negative capacitance and a resistance whose value changes from positive to negative with increasing frequency so as to raise the apparent line impedance over a portion of the audio band. As shown in Fig. 1, correction units 22, 24 may be located at both sides of the repeater 21 and the gain unit 26 consists of a bridged T with negative impedance series 27 and shunt 29 units having oppositely directed impedance vs. frequency characteristics resulting in a constant image impedance whilst allowing the high frequency cable loss to be compensated by increased high frequency gain. The combination allows unloaded lines to be matched and corrected in the repeater. The repeater is detailed in Fig. 5, the input connector 22 being identical to the output connector 24. The differential amplifier U3 is coupled at its input and output to both pairs of ports 23, 25 by transformers T 5 , T 6 . Around the inverting feedback loop are an inductance L 1  simulating the negative capacitance, and a variable resistor R 20  and switchable resistors R 22 , R 24  setting the overall gain and allowing the corrector to be used without the associated gain unit in short line applications. The non- inverting feedback loop contains resistor R 27  to set the basic amount of feedback, whilst capacitors C 10 , C 11  connected to the compensating terminals provide high frequency cut off to prevent singing. Capacitor C 12  and R 28  in the output circuit also provide overall positive feedback and C 13  may be switched in to increase the overall feedback at higher frequencies, Capacitors C 7 , C 8 , C 9  reduce the positive impedance at low frequencies by resonance with T 6 . The overall circuit offsets seasonal variations in the line characteristics once the impedance has been satisfactorily corrected. The series and shunt units 27, 29 both include purely resistive positive and negative feedback loops with switchable resistors in the negative loops to adjust the negative impedances of the units and a capacitor C 1 , C 18  across the amplifier inputs to provide the frequency dependent gain or impedance characteristics required to produce an overall image impedance which is constant. Optionally C 1  may be switched out to produce a flat characteristic in the series unit 27 for short lines. Alternative amplifier configurations are outlined in Fig. 6 not shown to simulate the negative capacitance.
Patent GB-901936-A (GB)
Title: Improvements in or relating to road and like-line marking apparatus
IPC: E01C23/16
Filed: 1960-06-07
Abstract: 901,936. Line-markers for roads &c. WALD INDUSTRIES Inc. June 7, 1960 [Nov. 13, 1959], No. 20015/60. Class 132 (2). In apparatus for marking an intermittent line in which a spray gun is turned on and off by an air-control valve operated by a cam driven by a road wheel, the drive ratio between the road wheel and the cam can be changed to vary the marking cycle. A three-wheeled vehicle carries an air-compressor (not shown), one or more paint guns 26, a paint container 28 and a hopper 30 with discharge spout 32 for reflecting material to be discharged on to the painted lines. Pivoted to the frame 12 of the vehicle at 54 is a housing 44 carrying a road wheel 66 driving through a belt 71 a pulley 72 which, through a worm 74 and gear 79 rotates a cam 80 on the top of the housing. Pulley 72 consists of two halves 146 urged inwards by springs 148 and defining a V-shaped belt groove. Fig. 2 shows the pulley 72 being driven at top speed. To reduce its speed, belt 71 is tensioned so that it forces apart the two pulley halves 146 and works at a part of the V-groove nearer the pulley axis. This is effected by moving the position of jockey pulley 154 carried on a bracket 150 pivoted to the shaft of pulley 72 and lockable in adjusted position by a nut and bolt 158 carried on the wall 46 of housing 44 and working in a slot 156 in bracket 150. Cam 80 is adjustable to vary the proportions of line and space in a marking cycle. It operates an air valve 81 mounted on the housing 44 and consisting of a plunger 86 having a necked part and working in a cylinder 82 having air inlet, outlet and exhaust ports 94, 98, 96. Air from the compressor flows through pipe 108 and manual valve 102 to valve 81 tnrougn pipe 100 and to the atomizing jets of guns 26 through pipes 112, 114, 118. In the position shown, Fig. 6, air flows through valve 81 to the paint valves of guns 26 through pipes 124, 126 and to the shutters 132 of discharge spouts 32 through pipes 128, 130 to supply paint and reflecting material. When valve 81 is moved to the other position by cam 80, the pipes 124, 126, 128, 130 are vented through ports 98, 96 to close the paint valves and reflecting material shutteis.
Patent GB-1045965-A (GB)
Title: Improvements in or relating to folding tables
Inventor: MASON JACK ARCHIBALD
Filed: 1963-05-21
Abstract: 1,045,965. Folding tables. MASONCRAFT (NEW ZEALAND) Ltd. Aug. 12, 1964 [May 21, 1963], No. 20067/63. Heading A4H. A folding table leg 2 is formed from two lengths of metal rod joined at one end to form a V-shaped member with outturned ends 2a and is secured to the table top by a bracket 3 with side pieces 3a having holes 8 to receive the ends 2a and a horizontal portion 3C having locking slots 9 into which the leg parts may enter when they are squeezed together.
Patent GB-783364-A (GB)
Title: Improvements in or relating to heat distribution apparatus for use with bakers' ovens
IPC: A21B1/48
Filed: 1955-07-12
Abstract: 783,364. Bakers' ovens. MARINONI, A. July 12, 1955 [July 12, 1954], No. 20086/55. Class 51 (2). A heating unit for a baker's oven comprises lower and upper sets of heating ducts a, b, c and a<SP>1</SP>, b<SP>1</SP>, c<SP>1</SP> arranged transversely across the baking chamber in zig-zag fashion to present to said chamber single heating surfaces 9 and 10, the said ducts being traversed by hot combustion gases delivered by a flue 2 from a combustion chamber 1. Hot gases enter a central duct a from the flue 2, and divide at the opposite end into the contiguous ducts b, reversing from these into the outer ducts c. Each duct c discharges into a waste pipe d leading to a chimney e, and controlled by a damper 8 operated by a rack and pinion device 7 from knobs 5 and 6 disposed at the side of the oven. Closed convector tubes 11 and 12 extending from the heating units along the length of the oven chamber are displaceable. longitudinally either by a hand-operated or electric motor-operated mechanism (not shown). Several heating units may be disposed along the length of the oven chamber, Fig. 5 (not shown). A contiguous conveyer may be disposed between the heating surfaces 9 and 10.
Patent GB-132779-A (GB)
Title: Improvements in Insulating Caps for Electrical Joints.
Inventor: RITSEMA MEINDERT
IPC: H01R4/22
Filed: 1919-08-16
Abstract: 132,779. Ritsema, M., (Assignee of Vlessing, S.). Sept. 18, 1918, [Convention date]. Couplings. - In order to insulate and seal a joint between conductors in a junction-box, the conductors, which are rubber - sheathed, are bared at the ends and inserted through passages in a screwed insulating block 1 so that the insulation wedges within conical passages 2 in the block. The bared ends are twisted together to form the joint 4; this action also serves to draw the insulation more tightly into the passages. The twisted joint is soldered and covered by an insulating-cap 6 which screws on to the block. Cement may be used between the cap and the shoulders 5 on the block to ensure a tight fitting.
Patent GB-438471-A (GB)
Title: An improved hydraulic transmission apparatus for motor vehicles
IPC: F16H47/06
Filed: 1934-07-10
Abstract: 438,471. Hydraulic transmission gearing for motor vehicles. VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH, J. M. [Firm of]), Heidenheim-on- Brenz, W³rtemberg, Germany. July 10, 1934, No. 20253. Convention date, July 10, 1933. [Classes 79 (ii) and 79 (iii)] A motor vehicle is driven by at least two power units b, b<1> through hydraulic torque converters or turbo-gears c, c<1>, and reversing gears d, d<1> so that each power unit can be set for forward or backward running independently of the other or others. The unit or units set for backward running can thus be used for braking during forward travel. The reversing gears may be mounted on the axles e, e<1> or may drive the axles through gearing f, g as shown. Each turbo-gear may comprise a plurality of circuits, at least one circuit being a torque converter.
Patent GB-272360-A (GB)
Title: Air cleaners
IPC: B01D46/04
Filed: 1926-08-17
Abstract: 272,360. Blaney, W. T. Aug. 17, 1926. Filtering.-Filter tubes 11 arranged in groups are rotatable step by step as a whole about an axis parallel to the tubes, each group in succession registering with a dust receiver 71. and being in this position freed from dust by agita.- tion. The apparatus is contained in a sheetmetal casing into the portion 1 of which air enters tangentially. The air passes downwards and deposits the heavier dust which is removed by a screw conveyer 55;. The lighter air enters the filter tubes, which are closed at the top, and after passing through them escapes through the outlet ring 6, which carries the filter device. The. lower ends of the plates are received in plates 14; their upper ends are closed by discs bolted to arcuate bars spanning consecutive radial elements 19. The frames thus formed are elastically supported from a spider frame, the radii 18b, Fig. 6, of which carry guides 24 :passing through the members 19 and supporting them by springs 23. Each pair of members 19 is spanned by an anvil bar 30 adapted to be struck by a hammer 31. The drum 9 enclosing and carrying the filters is rotated step by step by a shaft 41, bevel gearing, and a shaft 45 actuated by a ratchet wheel 48 and a pawl rocked by a pitman 51 driven through reduction gear from the conveyer shaft. The hammers are actuated through rods 36 engaged by a plunger 70 reciprocated by a toothed cam 65, the reciprocation taking place during the periods of rest. The cam is comtinuously driven by a sleeve 47 surrounding the shaft 45, and is toothed over part only of its circumference. The dust receiver 71 is sealed by spring pressure against the (plates 14. A spring seal is also provided between the ring 6 and the casing 6 and the casing top. The conveyer normally delivers the dust through an outlet closed by a spring pressed disc 90. An emergency dust outlet is provided at the side of the conveyer trough, opened by abnormal dust accumulation against spring pressure.
Patent GB-824436-A (GB)
Title: Organosiloxane water-repellent compositions
IPC: D06M15/643
Filed: 1957-06-27
Abstract: A siloxane composition comprises a mixture of (a) an organopolysiloxane mixture soluble in organic solvents and comprising (1) 15 to 80% by weight of (a)+(b) of a siloxane of the average general formula R1nSiO 4-n,/2 where each R1 is an alkyl or alkenyl radical of less than 4 C atoms or a monocyclic aryl radical and n has an average value of 2.0 to 2.9; (2) 5 to 70% by weight of (a)+(b) of a copolymer composed of (CH3)2SiO0.5 units and SiO2 units in such proportion that the ratio of CH3/Si is in the range 1.0 : 1 to 2.4 : 1 ; (b) 15 to 50% by weight of (a)+(b) of Ti(OR)4 or an aliphatic hydrocarbon-soluble partial hydrolysate thereof, wherein each R is an aliphatic hydrocarbon radical having less than 13 C atoms or a hydroxylated aliphatic hydrocarbon radical having less than 13 C atoms and less than 4 OH groups; (c) a nitroaliphatic compound or nitrobenzene; and (d) an organic solvent other than (c).  Titanium esters specified are esters of methyl, ethyl, allyl, isopropyl, cyclohexyl and octyl alcohols; ethylene, propylene, octylene, diethylene, tripropylene and tetraethylene glycols; and glycerine. Solvents specified are Stoddard solvent, naphtha mineral spirits, perchloroethylene, benzene, toluene and xylene.  Additives specified are nitro-methane, -ethane, -propane and -benzene, and are used in amount e.g. from 0.0002 to 0.1 mol. per ounce of the siloxane-solvent solution.  The novel compositions resist the tendency to turn blue when exposed to sunlight.  In examples, (1, 2), the compositions consist of naphtha mineral spirit solutions of a liquid dimethylsiloxane, tetraoctyl titanate, a (CH3)3SiO0.5-SiO2 copolymer and different nitro compounds; (3) the compositions are similar except that different Ti esters are used.  Uses.-For imparting water-repellency to porous materials, e.g. textiles, masonry, leather and wood.  Specifications 736,378 and 750,947 are referred to.
Patent GB-660442-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B1/00
Filed: 1949-08-04
Abstract: 660,442. Pistons. NATIONAL EQUIPMENT CORPORATION. Aug. 4, 1949 [Dec. 28, 1948], No. 20335/49. Class 122(i) [Also in Group XXVIII] A pump piston 5 has a plurality of circumferential grooves which are filled with liquid from a reservoir 6 to effect a seal with the cylinder bore 4.
Patent GB-597064-A (GB)
Title: Improvements in ophthalmic mountings
IPC: G02C5/22
Filed: 1945-08-08
Abstract: 597,064. Spectacle frames. ABBEY, A. (American Optical Co.). Aug. 8, 1945, No. 20365. [Class 97'(i)] A temple support has a slot in which the temple end is pivoted and which contains a U-shaped resilient friction member, the open end of the U embracing the pivot pin and the ends of the temple to provide friction for the pivoting of the temple and to prevent rotation of the pivot pin. The support, Fig. 12, comprises upper and lower portions 23, 24 which may be connected to the ends of a split lens rim and are held together by a screw 17. The portions 23, 24 are channeled at 31, 32 to form a slot housing a resilient member 20 embracing the ends of the temple 14 and having cylindrical or cupped portions having apertures through which the temple pivot 15 passes. Tension on the member 20 and so the friction on the templeis adjusted by the screw 15. The apertures in the member 20 may have teeth 36, Fig. 10, so that on closing the support by screw 17 the teeth are driven into the screw 15 to lock it against rotation. In an alternative, Fig. 13, the head 42 of the pivot 41 is clamped in a recess in the upper portion 23 and the lower end of the pivot is splayed by means of a bore 46 to grip the sides of the thread in the portion 24.
Patent GB-861334-A (GB)
Title: Brake system
IPC: F16D65/78
Filed: 1959-06-15
Abstract: 861,334. Brake cooling system. WAGNER ELECTRIC CORPORATION. June 15, 1959 [June 16, 1958], No. 20376/59. Class 103 (1). A cooling system, particularly for automobile brakes, comprises relatively rotatable first and second members 54 and 39 having friction elements, first means, such as the master cylinder 43 for developing fluid pressure for actuating the first member 54, into contact with the second member 39, second means such as the pump 5 for circulating fluid through the first member 54 in heat exchanger relationship with the friction elements thereof, and third means, such as the plunger piston 34 for controlling the circulation of cooling fluid through the first member 54. The third means comprises throttling means responsive to said first means to pressurize the cooling fluid.
Patent GB-337782-A (GB)
Title: Improvements in and relating to electric lamps and the like
IPC: H01K3/00
Filed: 1929-07-04
Abstract: 337,782. British Thomson-Houston Co., Ltd., (Assignees of Wright, D. K.). Feb. 18, 1929, [Convention date]. Drawings to Specification. Vacuum tubes. - A quantity of finely-divided tungsten is inserted into the bulbs of arc lamps or other electrical devices comprising elements heated to high temperatures in sealed evacuated or gas-filled bulbs or containers, prior to the sealing thereof, for the purpose of enabling deposits to be rubbed off their inner surfaces. The Specification as open to inspection under Sect. 91 (3) (a) mentions the use of finely-divided tantalum, molybdenum, fused aluminium oxide, and silicon carbide. This subject-matter does not appear in the Specification as accepted.
Patent GB-597122-A (GB)
Title: Improvements in and relating to means for supporting an electric motor adapted to drive a pulley by an endless chain or belt
IPC: H02K5/26
Filed: 1945-08-10
Abstract: 597,122. Belt gearing. HARRIS, C. S., and GOLD, B. Aug. 10, 1945, No. 20564. [Class 80(i)] [Also in Group XXXV] For tensioning a driving belt a motor 5 carrying a driving pulley 5a is adjustably mounted above a driven pulley 3a by means of a single screw device comprising screwed rods 8, 9 freely mounted in bearings 10, 12 in the motor platform 6, and in a saddle 13 on a bearing housing 2 carried by a base 1, respectively. Rods 14 on the base 1 slide in sleeves 16 on the motor platform to act as guides. Alternatively the parts 8, 16 may be connected to the base 1, and the parts 9, 14 to the platform 6.