baber/WOPTO huggingface dataset:
Patent GB-706556-A (GB)
Title: Improvements in or relating to the phenylation of methacrylic acid
IPC: C07C57/30
Filed: 1950-11-30
Abstract: A process of phenylating the a -carbon atom of methacrylic acid comprises reacting an alkyl ester of methacrylic acid with benzene in the presence of one or more substances of the group consisting of aluminium chloride, boron trifluoride and hydrofluoric acid at a temperature of at least 40 DEG C.  a -Phenylisobutyric acid is obtained directly when using an ester of methacrylic acid derived from an alcohol having two or more carbon atoms as starting material but with methyl methacrylate an a -phenylisobutyric acid ester is obtained and is hydrolysed to obtain the a -phenylisobutyric acid. Alkyl esters of methacrylic acid having from 1 to 8 carbon atoms in the ester radical, e.g. the methyl, ethyl, butyl or octyl radicals, are preferred starting materials. Weaker catalysts, e.g. ferric chloride and zinc chloride, will not catalyse the reaction.  In examples: a -phenylisobutyric acid is prepared by heating with benzene and aluminium chloride, ethyl methacrylate (I); n-butyl methacrylate (III) and n-octyl methacrylate (IV), the reacted mixture in each example is poured into a mixture of ice and hydrochloric acid, the benzene layer is separated, the benzene is removed by distillation and the precipitate obtained on cooling is filtered off, dissolved in sodium hydroxide solution, and hydrochloric acid is added to precipitate the desired product.  Methyl a -phenylisobutyrate is obtained, using methyl methacrylate in a process similar to that of example I and a  - phenylisobutyric acid may be recovered on alkaline hydrolysis of the product (II).
Patent GB-428187-A (GB)
Title: An improved non-inflammable fuse cord covering
IPC: C06C5/00
Filed: 1934-10-15
Abstract: Blasting-fuze cords are coated with a mixture of polymerized vinyl chloride and softening agents such as tricresyl phosphate, tributyl phosphate, or dibutyl phthalate; or with the product of the common polymerization of vinyl chloride and other vinyl compounds such as acrylic acid esters and vinyl acetate; or with a mixture of the last product and softening-agents; or with corresponding mixtures derived from after-chlorinated polyvinyl chloride.
Patent GB-294735-A (GB)
Abstract: 294,735. Kirkham, V. H., and Raymond, L. W. May 24, 1927. Essential oils.-Oil of cloves is prepared for transport by mixing with calcium or magnesium oxide or hydroxide in the solid state to form the calcium or magnesium salts of eugenol as a fine powder from which The volatile constituents of the oil may be evaporated or removed by washing with methylated spirit.
Patent GB-402925-A (GB)
Title: Improvements in the manufacture and production of hydro rubber
IPC: C08C19/02
Filed: 1932-10-22
Abstract: The hydrogenation of rubber and like highly polymerised unsaturated hydrocarbons is effected under pressure in presence of solvents and of catalysts containing heavy metals of the 6th group or oxides or sulphides thereof, with or without the addition of oxides or sulphides of other metals particularly 8th group metals, or of these metals themselves.  Temperatures of 200--320 DEG  C. and pressures of 50--180 atmospheres are referred to, but lower pressures such as 10 atmospheres may also be employed.  Suitable catalysts are described in Specifications 333,511 and 336,583, [both in Class 1 (i), Chemical processes &c.], and several specific examples are mentioned.
Patent GB-1489423-A (GB)
Title: Thermal regenerators
IPC: F28D19/04
Filed: 1975-10-02
Abstract: 1489423 Thermal regenerators G APPLEGATE 2 Oct 1975 [4 July 1974] 29632/74 Heading F4K In a rotary matrix type thermal regenerator for heat exchange between two gases (e.g. air to be heated and contaminated hot gas) flowing respectively in passageways 2, 3, means for purging the flow passages of the matrix 1 (e.g. as they move out of the hot gas stream and before they enter the air stream) comprises a collector 6 located adjacent a downstream surface of the rotating matrix in the flow passageway 2 and a duct 7 conveying the purged gas into the gas passageway 3 downstream of the matrix. The heat transfer material of the matrix 1 may comprise metal fibres. In all the arrangements described the duct 7 incorporates a control damper 8 and may also contain a fan 12. As shown in Fig. 4, the arrangement may include a further and smaller regenerator 13 in the duct 7 to transfer heat from the purged gas to an air stream which joins via a passageway 15 the stream of heated air in the passageway 2. In a modification, when the gases in the duct 3 are particularly noxious, the inlet to the collector 6 may comprise an independent fresh air duct
Patent GB-1039659-A (GB)
Title: Improvements in or relating to viners
Inventor: WOLSTENHOLME HAROLD
IPC: A01D75/28
Filed: 1962-08-02
Abstract: 1,039,659. Harvesting peas and beans. MATHER & PLATT Ltd. July 24, 1963 [Aug. 2, 1962], No. 29699/62. Heading A1F. A machine for harvesting legumes comprises a frame 3 supporting one or more drums 5, 6 for the treatment of the gathered crop which require to be maintained horizontal during operation of the machine over undulating terrain, there being means 8 for feeding the crop to the drums, level-detecting means (Fig. 2) for sensing deviations, from the horizontal, of the drum axes, and means 12 interposed between the frame 3 and the ground wheels or parts connected thereto for automatically correcting deviations of the axes from the horizontal in response to the output from the level-detecting means. In Fig. 1, the drums 5, 6 are mounted on a sub-frame 3 pivoted to a main wheeled frame 1 about an axis 4. The frame 1 is connected to a tractor 2 and supports the sub-frame 3 by a pair of jacks 12 near the rear end. A conveyer 8 extends from the drums 5, 6 towards gathering means 7 for the crop, being connected to the main frame by pin and slot connections 9, 10. The leveldetecting means (Fig. 2) comprises a U-tube 14, containing mercury 13, and a pair of electrodes 15 connected to a solonoid 18 controlling the feeding of pressure-fluid to the jacks 12. In a modification (Fig. 3, not shown) the drums 5, 6 are mounted directly on the main frame, the rams being then connected between the frame and the ground-wheels.
Patent GB-534300-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H04M3/08
Filed: 1939-11-09
Abstract: 534,300. Electric signalling systems. ERICSSON TELEPHONES, Ltd., and DISTIN, L. S. Nov. 9, 1939, No. 29701. [Class 40(i)] In a system for controlling alarm sirens and having means for signalling line faults, the control signals are given by feeding the line with A.C. and connecting one or.other of two halfwave rectifiers in series with it. As shown a signal is given by operating a selecting key KR or KG and then an operating key KS. Operation of KR or KG shunts resistance RE and. rectifier MRR over which Q is normally operated to energize marginal relay S which energizes a pole changer CV, to cause the line to be fed with A.C., and a relay P. Relay A.C. responds when the A.C. reaches a suitable value and cuts off Sand Q, P remaining held by rectified line current and Q by relay A.C. On the operation of KS one of the rectifiers MRG, MRR is inserted in the line and the corresponding relay E, D responds to control the siren. If the line breaks, Q falls back and lights ALI. If it is short-circuited or earthed on the battery side, P pulls up and lights lamp AL2. Audible signals may be provided. Faults may be indicated at the key position, by means of a relay connected in place of resistance RE and normally energized to hold open an alarm circuit.
Patent GB-786542-A (GB)
Title: Improvements in or relating to connecting-rod and crankshaft assemblies for multicylinder machines, and method of assembling same
IPC: F02B75/22
Filed: 1955-10-18
Abstract: 786,542. Crank-shafts. CHABAY, M. R. A., and COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE. Oct. 18, 1955 [Oct. 27, 1954], No. 29708/55. Class 80 (2) [Also in Group XXXIV] A connecting-rod and crank-shaft assembly, for compressors and like machines, comprising a crank-shaft 1 having one or more crank-pins 2, 3 and one or more detachable balance weights 10, is characterized in that connecting- rods 4 are mounted at least in pairs on each crank-pin and are formed with unitary big-ends 16, removal of the balance weights allowing the big-ends and connecting-rods to be moved along the crank-shaft to take them off and replace them in position. The big-ends are journalled on the crank-pins 2 &c., by means of rollers 17. When connecting up each pair of big-ends, the rollers 17 for one big-end are pushed into position with the connecting rod inclined to its crank-pin as shown in Fig. 2, and the final rollers are positioned with the connecting-rod straight; the second connecting-rod 'is moved into position, and as many rollers as possible are inserted with the connecting-rod inclined, the last rollers being inserted through a hole 18 finally closed by a plug (see Group XXXIV). As shown, the balance weights 10 are secured to the crankshaft 1 by bolts 13. Alternatively, the balance weights 10 may be secured by cotter-pins &c., or they may be force fits on the crank-shaft. As a modification, the balance weights may act as distance pieces between the ends of the crank-shaft 1 and its supporting bearings 29. An eccentric 20 at the centre of the crank-shaft operates an oil pump 22, and troughs 24 register with connecting-rod dippers 25 for splash lubrication.
Patent GB-741029-A (GB)
Title: Improvements relating to garden cloches
IPC: A01G13/04
Filed: 1953-10-28
Abstract: 741,029. Cloches. JARAY, F. F. Oct. 22, 1954 [Oct. 28, 1953], No. 29757/53. Class 20(1). A cloche includes frame members 1-4 of thin strip material folded longitudinally in which edge portions of thin sheets of flexible lightpassing material 5, 6, e.g. plasticised polyvinyl chloride, are sandwiched. The ends of the members 1 and 2 are held in the folds of the members 3 and 4, and the top edges of the sheets are sandwiched by longitudinally folded reinforcing strips 7, 8 which overlap. The strips are secured to the members 3 and 4, and the top edges of the sheets may be forced apart for ventilation purposes and held in that position by a stick 9. The cross-section of the frame members may be curved to increase their rigidity, and the members 3, 4 have extensions with turned-up ends for insertion into the ground. The curved cross-section of the members 3 and 4 enable a number of such cloches to be interlocked, as shown in Fig. 1. In Fig. 3 a horticultural light comprises a structure 31 supporting sheets of polyvinyl chloride 32, 33 and 34 having their edges bound with longitudinally folded metallic strips. The sheets are secured by rivets 38, 39 and the adjacent strips overlap and may, if desired, be forced and kept apart by a stick 40.
Patent GB-1192571-A (GB)
Title: A Bearing
IPC: F16C17/03
Filed: 1967-06-28
Abstract: 1,192,571. Bearings. SMITH INDUSTRIES INTERNATIONAL Inc. 28 June, 1967 [23 March, 1967], No. 29829/67. Heading F2A. A bearing comprises segments 26 between relatively rotatable parts 14, 23, the areas of the bearing surfaces of the segments being inversely related to their radial distance from the bearing axis to provide equal frictional retardation at each surface. In Fig. 2 segments 26 have arcuate concentric bearing surfaces 30, 32 of equal curvature to respective raceways. The area of surface 32 is reduced by tapers 40, the spaces thus formed and the circumferential clearance between the segments accommodating lubricant. The segments have flat sides engaging shoulders 18, 20 on the journal. A further bearing is formed with segments 44 of circular transverse cross-section arranged in a ring in curved raceways. In Figs. 6 and 7 (not shown), a solid lubricant (54, 56) is positioned between or in the segments.
Patent GB-704818-A (GB)
Title: Process for the manufacture of armoured valve cones, particularly for internal combustion engines
IPC: F01L3/02
Filed: 1951-12-24
Abstract: 704,818. Making valves. TEVES, A., TEVES, H., and TEVES, E. A., [trading as TEVES MASCHINEN-UND ARMATUREN FABRIK KOMMANDIT-GES., A.] Dec. 24, 1951 [Dec. 22, 1950], No. 30084/51. Addition to 695,574. Class 83 (2) In a modification of the process of the parent Specification, the peripheral side wall of an unfinished valve core, shaped as shown by the line 1, is thickened by welding on a deposit of corrosion resistant material indicated at 2 and is then forged between dies 3 and 4 whereby deformation of the cone begins at the thickened portion and any displaced material is shifted towards the annular edge of the cone. The contour of the forged valve is shown by the line 7 and of the corrosion resistant material by the area 6 extending to a portion 8. Line 5 represents the contour of the finished valve, the parts outside the line having been removed.
Patent GB-1163557-A (GB)
Title: Fluid-blast circuit interrupter with improved electromagnetic driving means
IPC: H01H33/88
Filed: 1967-06-29
Abstract: 1,163,557. Fluid-blast switches. WESTINGHOUSE ELECTRIC CORP. 29 June, 1967 [1 Sept., 1966], No. 30087/67. Heading HlN. A fluid blast switch has a piston 9 movable in a cylinder 10 to cause the blast and carrying a movable contact 7 and an insulating blast directing nozzle 18, a pair of electromagnetic coils 13, 52 being mounted respectively in the piston 9 and cylinder head 12 and connected together, by way of piston-rods, so as to be energized during interruption so as to assist the driving movement of piston 9. The piston 9 is attached to two piston-rods 24, 40, the coil 13 being connected between rod 40 and an insulated core 20 of rod 40. The rods 24, 40 are joined by a conducting member 44 coupled with lost motion 46 to a cross-bar 25 which is coupled by links (Fig. 1, not shown) to an operating mechanism. The coil 52 is connected between core 20 and a line terminal L2. The lower ends of core 20 and rod 24 carry contacts 21, 37 which are bridged by contacts 22, 37 on cross-bar 25 to short coil 13 in the closed position; in addition a fixed contact 57 connected to L2 engages conducting member 44 to short both coils. During opening, the initial movement of cross-bar 25 separates contacts 21, 22, 35, 37 and then moves member 44 away from contact 57 to insert the coils 13, 52 into series with the main contacts 6, 7. Further movement of member 44, the attached rods 24, 40 and piston 9 is then assisted by the attraction between the coils. During closing, initial movement of cross-bar 25 closes contacts 21, 22, 35, 37 and coil 13 is therefore shorted and inoperative. The switch is mounted in an envelope filled with compressed gas such as SFg.
Patent GB-426184-A (GB)
Title: Improvements in loudspeaker mountings
IPC: H04R1/02
Filed: 1934-10-22
Abstract: 426,184. Supporting loud -speakers. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and HUNTER, S. G., c/o General Electric Co., Stoke, Coventry. Oct. 22, 1934, No. 30238. [Class 40 (iv)] A ioud-speaker particularly for use in motorvehicles is mounted on a support 7 by means of hook-bolts 8 or the like which engage the magnet 1 and clamp it against resilient material 6 on the support ; resilient material being also interposed between the bolts and the support. As shown, the magnet rests upon a wooden cradle 5, and each bolt is fitted with a flanged metal bush 10 which engages a rubber bush 15 and is secured by a nut 13. One of the nuts 13 also secures an earthing tag 14. The cone support 4 is provided with a ring of felt bearing on the cabinet.
Patent GB-1000012-A (GB)
Title: Improvements in or relating to a mechanism for precision pumps
IPC: F04B13/00
Filed: 1962-08-08
Abstract: 1,000,012. Reciprocating pumps. CESKOSLOVENSKA AKADEMIE VED. Aug. 8, 1962 [Aug. 8, 1961], No. 30295/62. Heading F1A. An actuating mechanism for a pump plunger comprises a driving cam 2 bearing on a lever 5, which has an adjustable pivot 6, and a push rod 8. The push rod 8 bears on a pin 9 in a junction piece 10 of a plunger 11. A pivoted spring- loaded lever 28 is connected to a pull rod 26 which also bears on the pin 9. The downward limit of the piston stroke is determined by the position of a pin 13 in a pivoted lever 14, the setting of which is determined by a regulating screw 18. A lever operated cam 35 is used to overcome the action of the spring 30 on the push rod 28 to enable the pin 9 to be withdrawn from the junction piece 10 and permit withdrawal of the plunger 11 for cleaning or sterilising. Fixed pins loosely engage in slotted extensions 40, 39 on the push rods 8, 26 to retain the push rods in position when the pin is withdrawn.
Patent GB-853857-A (GB)
Title: Improvements in or relating to apparatus for controlling marine internal combustion engines and reversing gearing
Inventor: GREGORY CHARLES NEWTON
IPC: B63H21/22
Filed: 1957-09-27
Abstract: 853,857. Reverse-gear control. RUSTON & HORNSBY Ltd. Sept. 29, 1958 [Sept. 27, 1957], No. 30298/57. Addition to 708,928. Class 80 (2). [Also in Group XXIX] The invention of the parent case, in which either rotation of a hand wheel 58 by a ship's engineer drives a shaft 61 to effect through a cam 80 control of an hydraulically-operated forward-reverse gear in the ship and, simultaneously, drives through a cam 47 and links 44, &c. to effect regulation of the fuel supply to the ship's engine, or alternatively, by moving a sleeve 60 upwards to couple it to a shaft 81, direct control through the ship's telegraph mechanism by the navigator is obtained, is modified to reduce the load on the shaft 61 by inserting a fluid-pressure follow-up servomotor, Fig. 2 (not shown) (see Group XXIX), between the cam 47 and a spring in a governor controlling the fuel supply to the engine. The reduced effort required to turn the shaft 61 enables the worm gearing between the hand wheel 58 and the shaft to be dispensed with, the hand wheel then being secured directly to the shaft. The cam follower 46 is biased to engage the cam 47 by a spring which replaces the load formerly applied thereto by the spring of the governor.
Patent GB-193125-A (GB)
Title: Improvements in or relating to calendars
IPC: G09D3/08
Filed: 1921-11-14
Abstract: 193,125. Gulline, H. L., and Hyde, J. Nov. 14, 1921. Calendars.-A monthly calendar comprises a face plate b having a partially detached portion c on which the date figures are inscribed a disc e marked with the day-names projecting beyond the inner periphery of the portion c and relatively adjustable thereto by means of an arm s and pin p working in a slot in a back portion k, a month name-disc f visible through an aperture in the face plate b, and an adjustable pointer g for indicating the current date. An adjustable screen i mounted on a centrally pivoted arm h is provided to cover the redundant date figures. The pins o and p for adjusting the screen i and disc are braced in their slots q, r by means of springs o<3>, p<1> ant washers o<4>, p<2> respectively. The month-name disc and the pointer g are adjusted by turn button; 3, 2, respectively; these buttons are rotatable or a pin 4 and are held together to yieldingly suppor the plates and discs by a spring 8 located in the socket 6 of the button 3. The front is protected by a celluloid cover n which is clamped to the face plate and back portion by an annular frame 3( having an inwardly extending flange 31 and a wire ring or filler 33 clamped in position by pressing ir the flange portion 32. The back portion may be of sheet metal and be provided with a turned in re taining flange.
Patent GB-708089-A (GB)
Title: A machine for chopping up cut fodder lying on the ground and for delivering it to a trailer
IPC: A01D89/00
Filed: 1951-12-29
Abstract: 708,089. Fodder, picking up and chopping. THWAITES, L. B. April 8 1952 No. 30400/51. Class 5 (1) In a machine 29, 44 for picking up cut fodder lying on the ground and for chopping it and delivering it to a trailer 27, the frame of the machine is coupled to the tractor 23 by a pair of links 22 to prevent it swinging sideways and is held up clear or in working position by the hydraulic lift mechanism 24 of the tractor 23, and also provides an attachment link 26 for coupling the trailer thereto. Alternatively the trailer may be rigidly coupled direct to the tractor, leaving out the chopping machine, both methods of attachment avoiding more than one loose link in the connection between the tractor and trailer. The upper hydraulic lift bar of the tractor is connected to the part (25, Fig. 3, not shown) on the chopper frame and the two lower links 22 are secured by pins 21 to an upright 20 thereon. The tractor power take off is coupled to 47 to drive the pick-up and chopping mechanism. The chopper comprises pick-up spikes 30 receding within the slots of a sheet 34, from which the fodder is drawn between a pair of elevating wheels 35, 36 and passed to the rotary helical chopper co-operating with a fixed cutter 42. The chopped fodder is thereby thrown up the shoot 44, adjusted to deliver into the trailer.
Patent GB-622130-A (GB)
Title: Improvements in or relating to bridge type electrical measuring apparatus
IPC: G01R17/00
Filed: 1946-10-11
Abstract: 622,130. Inductance, capacitance, and resistance measurements. WAYNE KERR LABORATORIES, Ltd., and CALVERT, R. Oct. 11, 1946, No. 30445. [Class 37] In an A.C. bridge A, B, C, D in which the potential developed across the arm A, B is adjusted to balance the bridge by means of a shunted potentiometer 15, the latter is coupled to the adjacent arm B, C by a tapped transformer or auto-transformer 18. In the arrangement shown in Fig. 1 for measuring a resistance 23, the arm A, B comprises the upper half of the secondary of a transformer 11, arm C, D is constituted by a standard resistor 26, and arm A, D by a selected portion of the lower half of the secondary of transformer 11. The value of the resistance 23 is given by multiplying the setting of the potentiometer at balance by a factor determined by the tappings on the transformers. The potentiometer may be connected to an intermediate point on the autotransformer. In a modification, Fig. 3, for measuring an inductance 30, the standard impedance is a capacitor 32 connected as shown and a resistor 33, the setting of which indicates the Q of the inductance, is adjusted to complete the balance. In another modification, Fig. 4 (not shown), for measuring capacitance, the unknown impedance forms the arm C, D and a standard capacitor shunted by an adjustable resistor forms arm B, C.