baber/WOPTO huggingface dataset:
Patent GB-744187-A (GB)
Title: Unsaturated aldehydes and derivatives thereof
Inventor: CARRARA GINO
IPC: C07D333/44
Filed: 1953-06-23
Abstract: The invention comprises compounds of the formula <FORM:0744187/IV(a)/1> where X is sulphur or oxygen, R is hydrogen, halogen or a nitro group and R1 and R2 may be the same and be an alkoxy or aliphatic acyloxy group of 1-6 carbon atoms, or may be different and be a hydroxy group and the salt of a sulphonic group or R1 and R2 together may be an oxygen atom. The aldehydes of the above general formula in which R1 and R2 together are an oxygen atom are made by condensing an aldehyde of the formula <FORM:0744187/IV(a)/2> with acetaldehyde at a temperature below 20-25 DEG  C. in the presence of an alkaline condensation catalyst, e.g. an alkali metal hydroxide dissolved in a lower aliphatic alcohol, refluxing the resulting mixture with an aliphatic carboxylic anhydride of 1-6 carbon atoms, adding mineral acid such as hydrochloric acid and brominating the product in the presence of a solvent.  The aldehydes may be converted to the corresponding products in which R1 is hydroxyl and R2 is the salt of a sulphonic acid group, or where R1 and R2 are alkoxyl or acyloxy groups of 1-6 carbon atoms, by reaction with aqueous alkali metal bisulphite or with a lower aliphatic alcohol or lower aliphatic acid anhydride respectively.  In examples: (1) 5-nitro - 2 - thiophenealdehyde is reacted with acetaldehyde in the presence of a solution of potassium hydroxide in methyl alcohol, the reaction product is refluxed with acetic anhydride, aqueous hydrochloric acid is added and refluxing is continued to give a -(5-nitro-2-thienyl)-acrolein, which is brominated with a solution of bromine in acetic acid to give a -bromo-b -(5-nitro-2-thienyl)-acrolein, which is then converted into its bisulphite compound by reaction with sodium bisulphite; (2) 5-nitro-2-furaldehyde is reacted with acetaldehyde as in (1) and the resulting b -(5-nitro-2-furyl) acrolein is brominated to give a -bromo-b -(5-nitro-2-furyl) acrolein which is converted into its diethyl acetal; (3) 5-chloro-2-thiophenaldehyde is reacted with acetaldehyde as in (1) and the resulting 5-chloro-2-thiopheneacrolein is brominated to give a  - bromo - b  - (5 - chloro - 2-thienyl) acrolein which is treated with acetic anhydride to give a -bromo-b -(5-chloro-2-thienyl) acrolein diacetate; and (4) furaldehyde is condensed with acetaldehyde and the resulting b  - (2 - furyl) acrolein is brominated to give a -bromo-b -(2-furyl)-acrolein.
Patent GB-165428-A (GB)
Title: Improvements in automobiles adapted for carrying ordnance field carriages and similar heavy loads
IPC: B60P3/073
Filed: 1921-06-25
Abstract: 165,428. Rushen, P. C., (Soc. Anon. Cingoli Brevetti Guerrini). June 25, 1921. Field carriages.-The longitudinal frames T of automobile vehicles for transporting field-gun carriages are formed or provided with curved cradles Z to receive the wheels of the gun carriage C, and winches D are provided for raising and lowering the carriages. Fig. 3 shows one method of hauling the gun carriage on to the vehicle, in which a rope passing over a winch D to a fixed point A is looped round the wheel axle of the gun carriage. Fig. 4 shows another method in which a cradle separate from the frame T is moved by a winch over rollers Q from the position shown in dotted lines to that shown in full lines and vice versa. Fig. 5 shows a construction in which the cradles are pivoted so as to be raised and lowered by jacks N. Reference has been directed by the Comptroller to Specifications 13180/08 and 119,051, [Class 108 (i), Road vehicles, Body details &c. of].
Patent GB-596228-A (GB)
Title: Improvements in or relating to apparatus for simultaneously polishing both faces of a travelling strip of glass
IPC: B24B7/24
Filed: 1944-09-13
Abstract: 596,228. Polishing glass. PILKING- TON BROS., Ltd., and BAILLIE, G. H. Sept. 13, 1944, No. 17513. [Class 60] In apparatus for simultaneously polishing both faces of a horizontal travelling strip of glass as it comes from the lehr comprising upper and lower polishing tools between which the glass is fed by rollers, the lower polishing tools, which support the strip during polishing, comprise pads 4 rotatably mounted on a frame 2 rotated by a vertical shaft 1 ; each pad 4 is carried by an arm 9 pivoted at 10 in a fork of the frame 2. The pad is held in operative position by screws. 12 engaging recesses 13 in a lug of the arm 9 ; by withdrawing the screws 12 the arm is dropped to inoperative position shown to permit cleaning of the pad, the glass being supported by the other pads of the tool. The pad is vertically adjustable in the arm 9 by a screw 14 to permit of correct setting when a new pad is fitted. The pads may be carried by sub-frames carried by the main frame ; the axes of the pads may be slightly tilted from the vertical.
Patent GB-1440718-A (GB)
Title: Inorganic coloured pigments and a process for their production
IPC: C09C1/28
Filed: 1974-04-23
Abstract: 1440718 Inorganic coloured pigments DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT 23 April 1974 [10 May 1973] 17669/74 Heading C3P [Also in Division C4] A plastics material incorporates an inorganic coloured pigment wherein at least one coloured sulphide and/or sulphoselenide and/or selenide of the metals cadmium, zinc, mercury and/or manganese is included in the form of discrete particles in a crystalline modification of silicon dioxide. The pigment may be prepared by simultaneously precipitating the coloured compound and silica from a homogeneous solution, converting the amorphous silica formed into a crystalline modification by calcination at a temperature above 400 C., and removing excess non-included sulphide, selenide and/or sulpho selenide by treatment with an acid.
Patent GB-145570-A (GB)
Title: Improvements in and relating to cooling of gas turbines
IPC: F01D25/12
Filed: 1920-06-29
Abstract: 145,570. Holzwarth, H. Nov. 5, 1918, [Convention date]. Addition to 145,568. Cooling parts.-Relates to the circular exhaust nozzle a described in the parent Specification, through which the exhaust gases from the gas turbine are discharged, drawing with them a stream of cooling and scavenging air induced round the rotor. According to the present invention, the exhaust gases suck the cooling air not only through the outer slot e, but also through an inner slot f by way of a channel g round the exhaust chamber, thereby cooling the exhaust side of the rotor. The relative proportions of the slots e, f may be varied to suit requirements, and the slot e may be dispensed with altogether.
Patent GB-1037361-A (GB)
Title: Improvements in or relating to sound recording and playback apparatus
IPC: G11B5/00
Filed: 1964-04-29
Abstract: 1,037,361. Magnetic recording &c. apparatus. V-M CORPORATION. April 29, 1964 [May 13, 1963], No. 17822/64. Heading G5R. The description is substantially the same as that in Specification 1,037,362 but the claims refer only to the recording apparatus.
Patent GB-190979-A (GB)
Title: Improvements in plate bending rolls
IPC: B21D5/14
Filed: 1922-06-29
Abstract: 190,979. Ferguson, A. June 29, 1922. Curving.-The lower rolls 2, 3 of a three roll plate bender are floatingly mounted in the frame 4 and connected by gear wheels 2<a>, 3<a>, 5<a> to a central supporting roller or axle 5, the diameters of the rolls being the same as that of the pitch circles of the gears, and the rolls 2 and 3 being circularly adjusted round the axis of the central supporting roll by pairs of supplementary rolls 2b, 3<b> vertically adjusted by screw and nut mechanism. The rolls 2<b>, 3<b> are connected to the rolls 2, 3 by arms 7 and may be mounted in sub-frames 6.
Patent GB-855850-A (GB)
Title: Improved structural element for solid floors or ceilings
IPC: E04B5/36
Filed: 1958-06-05
Abstract: 855,850. Structural elements; floors and ceilings. SCHWORER, H., SCHWORER, H., and SCHWORER, R. June 5, 1958 [June 6, 1957], No. 18004/58. Classes 20(4) and 87(1) A structural element for floors and ceilings comprises bundles of reeds &c. 2 secured together with ties 3 and backed up by transverse beams 8, which may be fitted to either side of the element. It functions as lost shuttering for a R.C. floor, the element fitting across beams 12 and being so dimensioned that the ceiling cladding 24 is fixable as shown. In an embodiment (not shown) the reed aggregate is dimensioned to project under the structural beams and provide a continuous ceiling. In another embodiment (not shown) the reed aggregate is of an inverted trough shape and the transverse beams are contained within the trough.
Patent GB-530848-A (GB)
Title: Improvements in or relating to dish washing machines
IPC: A47L15/42
Filed: 1939-06-20
Abstract: 530,848. Dish washing machines. BOLINDERS FABRIKS AKTIEBOLAG. June 20, 1939, No. 18016. Convention date, June 29, 1938. [Class 138 (i)] In a dish washing machine a separate funnel shaped receptacle 54 is provided below an outlet pipe 44 from a liquid pump 20 and an overflow pipe 48 from a tank 16. The dimensions of the funnel are such that its upper mouth embraces not only these openings but also such places through which liquid may ooze from the circulating systems. The funnel has a central opening 56 and is detachably connected to a foot 60 which forms a liquid seal 58 with outlet conduit 62 leading to waste. The invention may be applied to the detached type of washer or to the built-in type.
Patent GB-881128-A (GB)
Title: Improvements in scraper chain conveyors
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G19/22
Filed: 1959-05-27
Abstract: 881,128. Endless scraper conveyers. MINING ENGINEERING CO. Ltd. April 22, 1960 [May 27, 1959], No. 18018/59. Class 78 (1). A scraper bar for a scraper chain conveyer of the kind in which spaced transverse scraper bars are coupled at their ends to parallel - driven chains comprises a bar of uniform rolled section, such as bull-head section, Fig. 8, or channel section, Fig. 11, which is strengthened over the central part of its length by welding to one or each of the front and rear faces of the bar a separate reinforcing member of uniform cross-section, such as members 17, Fig. 8, or 20, Fig. 11.
Patent GB-252568-A (GB)
Title: Improved smoking pipe
IPC: A24F1/08
Filed: 1925-07-15
Abstract: 252,568. Cutlar, W. K., and Wilson, I. July 15, 1925. Tobacco pipes.-The stem B is formed with two chambers C, D communicating with each other at their outer ends by an oblique passage G. The chamber D communicates with the bowl A by a,. downwardly inclined passage E and is closed by a plug F. The mouthpiece H is inserted into. the chamber C and carries a tubular extension I serving as a trap for nicotine &c.
Patent GB-687256-A (GB)
Title: A photographic exposure meter
IPC: G01J1/22
Filed: 1951-07-31
Abstract: 687,256. Photographic exposure meters. RUSSELL, F. M. Nov. 16, 1951 [July 31, 1951], No. 18114/51. Classes 97 (i) and 98 (i). A photographic exposure meter comprises two plane-polarizing screens arranged one in front of the other, in a viewing device through which the scene, object, or image whose brightness is to be measured can be viewed, one of the screens being rotatable relatively to the other for weakening the light from the scene or object so that the angular rotation necessary to weaken the light until the scene or object or a significant part thereof is just visible serves as a measure of the brightness of the scene or object. The meter may be used to determine the exposure required either for photographing a scene or for printing from a negative. As shown, the meter comprises an eye-piece 2 rotatable in the base part 1, the parts 1 and 2 being held together by an oval steel ring 15 engaging in the grooves 16. The eye-piece 2 has a relatively small viewing aperture 3 and contains a plane-polarizing screen 4, while the base part 1 has a relatively large viewing aperture 5 and contains a plane-polarizing screen 6. An eye-shield 7 is attached to the eye-piece 2 and a hood 8 carrying a plain glass window 9 on which is marked a reference frame is attached to the base part 1. The part 1 has a scale marked thereon, and the eye-piece 2 has a pointer or index co-operating with scale on the part 1. The base part 1 is rotated relatively to the eye-piece 2 until the scene or a chosen part thereof is just visible, and the reading on the scale is used to determine the exposure required from appropriate tables. Alternatively, a calculating device consisting of an annular disc or ring rotatable on the base part 1 and marked with a number of concentric scales co-operating with complemental concentric scales on the part 1, additional to the original scale, may be provided for computing the exposure. The disc or ring may carry a scale of light values corresponding to the original scale and co-operating with a scale of film speeds on the part 1, and a scale of exposure times co-operating with a scale of F- numbers on the part 1. In using the meter for determining printing exposure, the darkest part of either an image of the negative projected on a sheet of white paper in an enlarger or of the negative itself placed on a sheet of white paper is viewed through the meter while the reading is taken. In this case, the meter is used in conjunction with a table computed to give the correct exposures for different printing papers. The hood 8 may be replaced by a hood carrying a colour filter excluding light of the colour emitted by the dark-room lamp, an allowance being made for the effect of the filter on the reading on the scale.
Patent GB-1481290-A (GB)
Title: Coupler for optical fibres
IPC: G02B6/38
Filed: 1976-05-04
Abstract: 1481290 Optical fibre connectors INTERNATIONAL STANDARD ELECTRIC CORP 4 May 1976 [9 May 1975] 18152/76 Heading G2J A coupling device for optical fibres comprises a sleeve 10 having a central portion 12 of reduced diameter within which is postioned a transparent, non-rigid spacer member 18. The ends of the sleeve 10 are externally screw-threaded at 32, 34. An optical fibre bundle is secured in each end of the sleeve by means of an internally screwthreaded clamp 36, 38 which encircles the bundle and is screwed on to the sleeve, a projection 40, 42 on the clamp engaging a holding ring 28, 30 on the bundle and so urging the fibre ends against the spacer 18. The inner surface of the central portion 12 may be reflective.
Patent GB-678992-A (GB)
Title: Lubricating device for shaft bearings
IPC: F16C33/66
Filed: 1950-07-20
Abstract: 678,992. Stuffing-box substitutes. ROULEMENTS A BILLES MINIATURES SOC. ANON. July 20, 1950 [Sept. 2, 1949], No. 18175/50. Class 122(v) [Also in Group XXXIV] In a bearing 1, lubricant is retained in a surrounding envelope having covers 5, 6 ,each side of the bearing by capillary gaps 8, 9 formed between the covers and shaft 2, and a capillary space 13 conveys oil to the gap 9. The space 13 is formed by a bowl-like cover 10 having bosses 11, 12, which is pressed into the cover 5. Truncated conical portions on the shaft are provided adjacent the capillary gaps. In the case of a horizontal shaft shown in Fig. '3, each cover is provided with an inner cover 10<SP>1</SP> forming capillary spaces, and outer dust covers 20 may be provided. The device is applicable to ball, roller, or plain bearings.
Patent GB-313530-A (GB)
Title: Improvements in and relating to electric resistance seam-welding machines
IPC: B23K11/06
Filed: 1929-06-13
Abstract: 313,530. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). June 13, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Welding.-In an electric-resistance, seamwelding machine of the type in which one of the roller electrodes is carried by a pivoted arm operated by a foot lever, the electrodes are pressed together by an auxiliary device operated by a separate source of power, so that thick plates can be welded without fatiguing the operator. The lower electrode c is carried by an adjustable fixed arm b and the upper electrode d is carried by a slide g movable in a guide h rigidly fixed to the pivoted arm e. Pressure is applied intermittently by one or more hammers i operated by a liquid or gaseous medium such as air and mounted in alignment with the axes of the electrodes.
Patent GB-950192-A (GB)
Title: Means for arresting or stopping an aircraft on landing
IPC: B64F1/02
Filed: 1960-05-24
Abstract: 950,192. Aircraft arresting gear. AERAZUR CONSTRUCTIONS AERONAUTIQUES S.A. May 24, 1960 [May 28, 1959], No. 18293/60. Heading B7G. An aircraft arresting barrier supported by poles 8 each side of the runway comprises a plurality of net elements, Fig. 1, each composed of two horizontal ropes or the like, 1, 2, interconnected by spaced apart vertical ropes or the like 3, the net elements being juxtaposed to form a compound net, Fig. 4. Each net element is connected by cables 4, 5, to brake means 6, 7, and by cables 9, 10, to the posts 8. In Fig. 4 there are twenty-four net elements, so disposed that the vertical ropes form groups of six, four consecutive groups being formed by one rope from each net. The ropes in a group are spaced by a few centimetres, and groups by one and a quarter metres. The lower horizontal ropes are connected to the runway at places 35 by breakable means. The vertical ropes are intended to engage the aircraft wings, but should any vertical rope engage a protruding part, say the aircraft nose, breakable connections 13, 14, Fig. 1, release loops 11, 12 in the horizontal ropes of that vertical rope to enable the net element to be drawn forward freely by the aircraft nose, while leaving the remaining net elements in their normal position for wing engagement. The vertical ropes are preferably slack.
Patent GB-284932-A (GB)
Title: Improved shaving brush
IPC: A46D1/00
Filed: 1927-07-11
Abstract: 284,932. Zimmet, H. July 11, 1927. Fixing by self-grip sockets.- A shaving brush comprises a socketed cap b with integral bristles all of soft vulcanized rubber, the inner surface of the socket wall being provided with an annular bead e for engaging a corresponding groove in the handle a. Channels h are provided for the escape of air, a central tenon i is also provided.
Patent GB-351728-A (GB)
Title: Improvements in mathematical instruments
IPC: G01C1/00
Filed: 1930-06-16
Abstract: 351,728. Protractors. BUCHANAN, A., 19, Routh Road, Wandsworth, London. June 16, 1930, No. 18429. [Classes 97 (ii) and 97 (iii).] A mathematical instrument comprises a protractor and a set-square capable of relative turning movement, wherein the protractor is in the form of a semi-annulus provided with a straight edge on its base, and is slidably mounted in a slot in the set-square, so that the set-square bears on the two arcuate edges of the protractor. As shown in Fig. 1, a set-square 1 pivots about the centre 3 of a semi-annular protractor 2, graduated round its outer semicircular edge in the usual manner, and also having graduations indicating the slopes of parts of capital letters and roof pitches respectively. The graduated ruler 4 is preferably reinforced with metal. The set-square 1 is composed of two frames 9, 10, Fig. 2, one on either side of the protractor 2, and two intermediate pieces 11, 12 of substantially triangular form having arcuate edges conforming to the corresponding edges of the protractor 2. A clamping device comprises a shoe 14 pressed against the edge of the protractor by means of a screw 15 passing through a nut 16 mounted on the set-square 1. A spring may be used instead of or in addition to the screw and nut. A small hole may be provided at the centre 3 in which a thread provided with a weight may be inserted to form a clinometer. The piece 11 may have a hair line 20, or may have its arcuate edge graduated to form a vernier scale, or may be graduated to co-operate with a hair line on the semi-annulus 2. The midway graduation on the protractor 2 may indicate 45 instead of 90‹. The edges 7, 8 and those of the straight edge 4 may be tongued to facilitate use with an ink-ruling pen. A set-square of any shape may be used.
Patent GB-1178383-A (GB)
Title: Improvements relating to Control Circuit Arrangements.
Inventor: GROLLET DUDLEY FRANCIS
IPC: H02J7/16
Filed: 1966-04-27
Abstract: 1,178,383. Vehicle power supply systems. MULLARD Ltd. 20 Feb., 1967 [27 April, 1966], No. 18430/66. Heading H2H. [Also in Division G3] An alternator 1 such as may be used in the electrical system of a motor vehicle is associated with a circuit arrangement including a device, e.g. a lamp 19, for indicating when the alternator output exceeds a predetermined level, a control quantity derived from the alternator output being applied to control a transistor switch which when closed provides a short-circuit across the device. As shown, the switch is constituted by a transistor 18 which also forms part of a voltage regulator 10 to 13, 15 to 17, connected to control, in known manner, the excitation current supplied to the field winding 2 of the alternator, the collector/emitter path of transistor 18 being connected, together with a further switch 14 which may be combined with the ignition switch of a vehicle, in parallel with the lamp 19. When the switch 14 is closed and the alternator 1 first started up, the voltage from a battery 8 connected to be charged from the alternator renders transistor 17 conductive, and field current flows by way of transistor 17, lamp 19 and switch 14, the lamp 19 thus being energized as transistor 18 is non-conductive under these conditions. As the alternator output builds up, a control signal derived from the alternator output windings is applied to the base of transistor 18 by way of resistors 21, 22, 23 connected as shown; when the output reaches the predetermined level transistor 18 conducts to short-circuit lamp 18 which is thus extinguished. A resistor 20 may be connected in parallel with the lamp 19, which could be replaced by a buzzer. The arrangement may be applied to a negative-earth system (Fig. 2, not shown), and the voltage regulator may include a positive feedback circuit to aid its switching action (Fig. 3, not shown). The switch 14 may be actually constituted by the ignition switch of a vehicle instead of being associated therewith.
Patent GB-165336-A (GB)
Title: Improvements in and relating to heat exchangers
IPC: F28D7/00
Filed: 1920-07-03
Abstract: 165,336. Frossard de Saugy, H. July 3,1920. Loop-tube appara. tus. - A heat-exchanger comprising tubes c joining paralel headers a is so constructed t h a t whether placed upright, horizontal, or on its side, a portion of one header is above, and a portion of one header below, the part of the apparatus through which the fluid circulates. To this end the tubes are shaped as shown, and each header has a prolongation.
Patent GB-1261706-A (GB)
Title: Cutting workpieces
Inventor: PAINE EDWIN WALTER
IPC: B23K26/14
Filed: 1968-05-31
Abstract: 1,261,706. Cutting with radiation beams. BRITISH OXYGEN CO. Ltd. 22 May, 1969 [31 May, 1968; 3 Dec., 1968; 10 April, 1969], Nos. 26247/68, 57300/68 and 18569/69. Headings B4B and B5A. A non-metallic workpiece 18 is cut by directing at a zone of the surface a radiation beam 4 of sufficient energy to effect fusion, thermal decomposition or vaporization, and concurrently directing a gas stream at the zone to modify by cooling, the action of the beam 4, the gas stream impinging on an area extending beyond that impinged on by the beam. Cooling by the gas produces a cleaner cut. Cutting apparatus includes means for focusing preferably a laser beam 4 from a continously operated CO 2  laser, and a device 8 for producing a gas stream preferably coaxial with the beam 4, comprising a gas inlet 12, a window 16 and an outlet 14. Synthetic plastics, paper, wood, glass, leather, mineral-based materials, and textiles &c. may be cut.