baber/WOPTO huggingface dataset:
Patent GB-739162-A (GB)
Title: Improvements relating to electric motor control systems
Inventor: PECK PHILIP ELWORTHY
IPC: H02P7/34
Filed: 1952-10-06
Abstract: 739,162. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 6, 1953 [Oct. 6, 1952], No. 24989/52. Class 38 (3). In a Ward-Leonard system for rolling mills, a motor 1 having a main exciter 4 and pilot exciter 6 is supplied from a generator 2 which has a main exciter 8 and pilot exciter 10, the machines 6 and 10 being of the amplidyne type. When the motor 1 is operating in the forward direction and it is desired to reduce its speed rapidly or to reverse the motor, the excitation of the generator is reversed and that of the motor is increased. Regeneration of the motor may cause excessive current in the loop circuit, and, to prevent this, a transformer is provided having primary winding 12 in the motor excitation circuit and secondary winding 13 in series with a field winding 11 of the pilot exciter 10. A second transformer has primary winding 14 in the excitation circuit of the generator and secondary winding 15 in series with the windings 11 and 13. A rectifier 16 passes current only when the motor field is being strengthened, and direction selector contactors 17, 18, ensure that its output is applied to the field winding 11 in the correct sense to check generator voltage decay irrespective of the generator polarity. The voltage produced by one transformer alone is insufficient to render the rectifier conductive, but both acting together causes the passage of current through the field winding 11. Thus, operation to effect simultaneous strengthening of the motor field and weakening or reversal of the generator excitation produces the required checking action through pilot exciter 10. The rate-of-change signals may be derived from separate windings on the generator and motor. Specifications 547,613, 619,848, 621,782, 665,842 and 693,899 are referred to.
Patent GB-754617-A (GB)
Title: Improvements in or relating to the forming of metal articles by shaping blanks between dies
IPC: B21C23/21
Filed: 1954-08-27
Abstract: 754,617. Extruding; punching. CHAPPUIS, J. A. Aug. 27, 1954, No. 25015/54. Class 83 (4). A method of forming a metal article from a cold flat metal blank comprises confining the blank X in the cavity of a die 10, applying a preliminary pressure to the blank until an initial deformation takes place and suddenly increasing the pressure to complete the deformation. The blank X is punched out of sheet-metal or strip stock X by a punch 8 secured to a threaded blank 8 mounted against a strong spring assembly 12 in the reciprocating head 1 of a mechanical press, which head is actuated through connected rods 3 from a crank or eccentric shaft. The spring assembly comprises a set of " Belleville " washers and its initial loading may be varied by a nut 5. Upon descent of the head, the punch 8, after slightly compressing the spring assembly, severs the blank from the stock and pushes it against an anvil 11 in the die cavity. Pressure is then applied against the blank, whilst the spring is being further compressed, to impact it into contact with the cavity wall and backwardly extrude it slightly into an axial bore 9 in the punch, Fig. 3 (not shown). The head subsequently engages an adjustable collar 7 on the block, whereby a sudden positive increased pressure is applied to the blank to impact extrude it to its finished shape, Fig. 5, wherein a long central projection Z is provided. The axial positions of the punch and the anvil may be adjusted in the latter case by means of shims. The punch may have a number of parallel holes for forming a plurality of extruded projections and the anvil may also have an axial hole for forming an extruded projection on the forward end of the blank. In another embodiment, Fig. 12, the extruded product has an annular flange Z<SP>4</SP> formed by backward extrusion and a forward projection Z<SP>5</SP> formed by a direct extrusion. Examples are given of different spring assemblies using various combinations of " Belleville " washers for extruding mild steel blanks.
Patent GB-894916-A (GB)
Title: Improvements in and relating to liquid filter units
IPC: F04B53/10
Filed: 1960-07-19
Abstract: 894,916. Filters. GENERAL MOTORS CORPORATION. July 19, 1960 [Aug. 3, 1959], No. 25110/60. Class 46. A liquid filter unit comprises a housing 24 having inlet and outlet chambers 26, 28, respectively, separated by a partition 30, a base plate 50 and intermediate perforated retainer 48, a first main filter 58, of e.g. pleated corrugated paper, arranged in a passage between the chambers, a second filter 72, of e.g. metal gauze, in another passage between the chambers, and a by-pass valve 56 in a passage between the second filter and the outlet chamber adapted to open at a predetermined pressure differential between the chambers caused e.g. by clogging of the first filter 58. The first filter is supported on its inner surface by a perforate retainer 48 which constitutes a third filter. The unit may be used in vehicle fluid pressure operated transmissions.
Patent GB-1473679-A (GB)
Title: Handling systems for industrial products
IPC: B65G47/29
Filed: 1974-06-06
Abstract: 1473679 Stopping articles on conveyer belts SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 6 June 1974 [8 June 1973] 25132/74 Heading B8A Liquefied gas bottles b are fed by a continuously driven belt conveyer C to a filling caroussel M, but to limit the extent of the line F of bottles immediately upstream of the caroussel, means are provided for lifting bottles in a zone S 1  clear of belt 12. In Fig. 2 on either side of the belt are hoses 20 which may be inflated to raise longitudinal members 22 of inverted U-shape. When the hoses uninflated (right hand in figure) the bottles rest on the belt 12 and are conveyed. To halt the bottles, they are raised by inflating the hoses (left hand). The belt guided in a channel 11 slides on a member 13. Compressed air from a line 30 is fed and controlled by a timing device 45 and by levers 42a, 43a actuated by the presence or absence of a bottle. Actuation of lever 43a by the first bottle causes the device 45 to be pressurized such that after a predetermined time the hoses 20 are inflated and bottles in the zone S 1  are halted. When the last bottle of the line F has released the lever 43a the hoses are deflated and the halted bottles advance so that lever 43a is again operated to initiate a further sequence. There may be a single central bottle lifting means and two laterally disposed conveying members.
Patent GB-532505-A (GB)
Title: Improvements in or relating to electromagnetically operated valves
IPC: F16K31/42
Filed: 1939-09-01
Abstract: 532,505. Valves; fluid pressure servomotor-control systems. SIEMENS APPARATE UND MASCHINEN GES. Sept. 1, 1939, No. 25148. Convention date, Sept. 2, 1938. [Class 135] An electromagnetically operated valve has armature e<SP>2</SP> arranged to form a valve member which when the magnet is energized closes the ends of two conduits 8, 9. In the arrangement shown these two conduits lead to the ends of a servomotor cylinder 2 adapted to operate a control surface 1 of an aeroplane. The servomotor is normally controlled automatically by a valve 7 actuated by a member 4 acting through a floating lever 5. To permit direct manual operation by a lever 3 the magnet is de-energized by opening the switch 10 so permitting the valve to open and fluid to circulate freely between the two ends of the cylinders. Vent ports e<SP>5</SP>, e<SP>7</SP> are provided to permit movement of the armature. The conduits 8, 9 pass through the central part of the electromagnet core and are fitted at their ends with brass ferrules to provide valve seats. The upward movement of the armature is limited by a ring e<SP>4</SP> secured to the core.
Patent GB-187930-A (GB)
Title: Improvements in or appertaining to machines for printing from engraved plates or dies
IPC: B41F9/10
Filed: 1921-06-22
Abstract: 187,930. Waite, F., and Waite & Saville, Ltd. June 22, 1921. Inking-apparatus.-In printing from engraved plates or dies such as B, Fig. I, the superfluous ink is removed by one or more scraping blades 2, 2a divided by means of slits or slots c, Fig. II, into sections adapted to yield independently and so follow irregularities in the printing surface. Two blades are preferably used, the slits in each alternating with those of the other, as shown in Fig. II, so that a continuous edge is presented to the die.
Patent GB-1475440-A (GB)
Title: Stack changing apparatus for a sheet feeder
IPC: B65H1/26
Filed: 1975-06-12
Abstract: 1475440 Stack changing GEORG SPIESS GmbH 12 June 1975 [12 Feb 1975] 25263/75 Heading B8R A stack changing apparatus comprises sealing bars 8 and 12 which operatively are clamped against a stack of sheets forming substantially air-tight cavities 16 with transverse support bars 5, into which compressed air is pumped to ease removal of the bars 5 when merging the stack with its replenishment. Screw-shaft 17 provides the clamping force and also retracts the bars 5 when turned past the clamping position. Sealing material 9 is provided on the bars 8 and 12, and bars 5 are preferably bevelled at their free ends 20.
Patent GB-792261-A (GB)
Title: Improvement in or relating to boxes, cartons, trays or like containers
Inventor: PEARCE JAMES
IPC: B65D5/36
Filed: 1954-08-31
Abstract: 792,261. Cartons. SHIRLEY & WARBEY BOX CO., Ltd., [formerly SHIRLEY & CO., Ltd., R. L.]. Aug. 25, 1955 [Aug. 31, 1954], No. 25266/54. Class 18. A carton of the kind in which setting up from a collapsed condition causes base flaps to interlock automatically has two such flaps 20, 22 with extensions 38 which are secured to the end walls 2, 4. The extensions may partly or, as shown, completely cover the end walls, and may have lid supporting extension flaps. Flaps such as 43 on the end walls may have cuts 44 to prevent glue lines 46 being applied to them.
Patent GB-464276-A (GB)
Title: Process for the manufacture of condensation products
IPC: C08G63/12
Filed: 1935-09-11
Abstract: Succinic acids, or anhydrides thereof, at least one methylene group of which is connected to an aliphatic carbon atom which forms part of a hydrocarbon residue containing at least five carbon atoms, are esterified with alcohols such as mono- or polyhydric alcohols or mixtures thereof in the presence if desired of other polybasic acids, monobasic acids, fatty acids from drying oils or resin acids. Suitable substituted succinic acids include nonenyl-, dodecenyl- and pentadecenylsuccinic acids.  Suitable alcohols include methyl, ethyl, propyl, butyl, amyl, stearyl, and benzyl alcohols, glycols, glycerine, pentaerythrite, mannite or a di- or poly-oxymethyl derivative of benzene.  Other acids that may be present include polybasic acids such as phthalic, maleic, adipic, stearic, ricinoleic and octadecadiene acids, linseed- or woodoil acids, colophony. Esters of these acids such as linseed-oil, wood oil, cottonseed oil, oxidized or blown oils may also be used.  In examples: (1) a nonenyl succinic anhydride is esterified with butyl, isobutyl or amyl alcohol or cyclohexanol, glycerine, glycerine and linseed-oil, or colophony and glycerine; (7) \su-methyl-\su-phenyl pyrotartaric acid is esterified with the monoglyceride of linseed-oil acid and glycerine or with butyl alcohol.  Specification 441,016 is referred to. Nonenyl, dodecenyl and pentadecenyl succinic anhydrides are prepared by condensing the corresponding olefines with maleic anhydride.  A nonenyl succinic anhydride (example 1) is prepared by polymerizing propylene with phosphoric acid in a copper autoclave and condensing the dried polymer with maleic anhydride in the presence of benzene. Samples have been furnished under Sect. 2 (5) of esters prepared by esterifying (1) a condensation product of pentane and maleic anhydride with cyclohexanol, (2) a condensation product of paraffin oil and maleic anhydride with linseed-oil monoglyceride, (3) linoleic acid monoglyceride and glycerol with nonenylene succinic anhydride, (4) a condensation product of phenylcyclohexanone and maleic anhydride with butanol, and (5) an addition product of 2.3-dimethylbutadiene and maleic anhydride with ethanol.
Patent GB-356920-A (GB)
Title: Improvements in or relating to lehrs for annealing glassware
IPC: C03B25/06
Filed: 1930-08-25
Abstract: 356,920. Air flow control systems. BRITISH HARTFORD - FAIRMONT SYNDICATE, Ltd., 142, Audrey House, Ely Place, London.-(Assignees of Wadman, H. A.; 51, Evergreen Avenue, Hartford, Connecticut, U.S.A.) Aug. 25, 1930, No. 25360. Convention date, Aug. 29, 1929. [Class 137.] The drift of atmosphere in the tunnel of a glass annealing leer is controlled by a device which is responsive to the drift. In the apparatus shown a gas flame 31 burns in the leer tunnel, and when this is deflected by the draught the differential heating of the two wings 35 of a heat-sensitive element 33 is utilized to control a reversible electric motor 39, which adjusts a damper 30 in a flue 29 leading to the tunnel. Air is withdrawn from the tunnel by a fan 12 through apertures 18, and by controlling the return of air through the flue 29, the drift of atmosphere within the tunnel may be neutralized or maintained constant in one direction or the other. Instead of a gas flame any upwardly moving stream of gas at a temperature differing materially from that of the tunnel atmosphere may be used, and the movement of the gas flame, or of a reflecting mirror, may be detected and utilized by means of photoelectric cells. Alternatively a gas having chemical properties differing materially from those of the tunnel atmosphere, e.g. carbon dioxide, may be supplied to the tunnel, and the drift may then be determined by gas analyzers. In a modification the control is effected through two separate thermostatic devices, which regulate the escape, through an end door, of gases delivered to the tunnel. Specification 357,075 is referred to.
Patent GB-665050-A (GB)
Title: Improvements relating to conveyor band tracking means
IPC: B65G23/00
Filed: 1949-10-03
Abstract: 665,050. Conveyers. BAKER PERKINS, Ltd. (Baker Perkins, Inc.). Oct. 3, 1949. No. 25394/49. Class 78 (i). A band tracking device comprises power operated means for correcting a tendency of the band to move laterally, means including differential means operated by lateral movement of the band and by adjustment of the correcting means for anticipating cessation of lateral band movement and means actuated by the anticipating means for controlling the correction means. The band 25 passes round a drum 24 on a shaft 23 which is mounted in bearings on supports in a baking oven 10. The end bearing 21 is'slidable on a support 18 by a guide 26 when the band moves to contact a side roller 27. The rollers are connected by brackets to a rod 33 which is mounted in side bearings and extends into a housing 42 at one end. The rod 33 is linked by a bell crank lever and cross rod to a vertical rod 62 mounted to pivot about upper and lower points 61 and 65 and connected at its lower end to a block 64 threaded on a shaft 66. A U- shaped bracket 67 screwed to the rear wall 43 of the housing acts as a limiting device for movement of the rod 62. One end of the shaft is mounted in a bearing 90 and has a gear 93 meshing with a gear 94 on a shaft 95 driven from a motor 112. The shaft 95 is geared to a shaft 98 having a pulley, clutch and handwheel, the clutch is coupled to a lever 107 having a hand wheel for manual operation should the power supply fail. A rod 116 is connected between the bearing 21 and the shaft 95. The lever 62 passes between two switches 69 and 70 connected to the rear wall 43 and having rollers 71 and 72 contacting a cam plate 73 pivotally mounted on the rear wall 43 and to the lever 62 by pins 74 and 76. The switches are connected to reversing switches in switch boxes 81 and 82 and to limit switches 85 and 86. Lateral movement of the band contacts a roller to move the rod 33 to move the lever 62 and cam plate 73 to contact a roller on a switch 69 and 70 to operate the motor 112 to drive the rod 116 to laterally displace the shaft 23 to correct movement of the band. At the same time the shaft 66 is rotated to move the block 64 and lever 62 tu pivot about points 61 and to break contact with the switch and tu stop the motor, the speed at which this occurs depending on the rate of correction of lateral band travel. In a modified form, the shaft of the jockey pulley, over which the belt passes, is mounted to pivot at one end by mounting in a stub shaft and the other end is mounted in a carriage movable longitudinally on wheels. When a side roller is contacted, a vertical shaft is pivoted to operate a lever to close a switch to start a motor to move the carriage and the axle of the jockey pulley. This starts a differential device to open the motor circuit. The switches, operating similarly to those previously described, are mounted on separate plates hinged together and are adjustable to allow for greater tolerance of band movement.
Patent GB-184089-A (GB)
Title: An improved combination tool
IPC: B25F1/00
Filed: 1921-09-27
Abstract: 184,089. Wasseth, M. Sept. 27, 1921. Rigid-jaw and sliding-jaw wrenches; wrench handles and shanks; wrench-jaw faces and attachments; screwdrivers. - A combination tool consists of a hollow handle having a spanner head 13 and hammer head 18 at one end and a fixed jaw 19 at the other end with which co-operates a sliding jaw 20 having a screwed shank 21 extending into the hollow handle, so as to be adjusted by means of a nut 23, the inner end of the shank being formed as a screwdriver 29. The sliding jaw 20 is formed as a claw nail extractor 24 and has a serrated V recess 25 for use as a pipe wrench. The hollow handle consists of a frame 10, with a plate 11 riveted to the side of the frame. It is constructed so as to accommodate several sizes of nuts as at 14, 16, 17, 28. A serrated projection 26 on the fixed jaw 19 forms with the V-shaped recess 25 a pipe wrench. A square hole 30 in the hollow handle enables the tool to be used as a tap wrench, being adjustable by means of the end of the screwdriver 29 and a screw 31. The sliding jaw 20 is recessed at 27 to form another wrench of a size different from those on the handle.
Patent GB-205505-A (GB)
Title: Impulse circuit arrangements for automatic switches or repeaters of the type used intelephone systems
IPC: H04Q1/36
Filed: 1922-08-11
Abstract: 205,505. Automatic Telephone Manufacturing Co., (Assignees of Bellamy, J. I.). Oct. 12, 1921, [Convention date]. Drawings to Specification. Automatic exchange systems. - A relay for changing over the circuits of a selector between digits is normally short-circuited by contacts of the line and release relays, but becomes energized at the first impulse of a digit and remains energized as long as the digit continues. The invention is described in connection with the selector circuit shown in Specification 187,207.
Patent GB-502614-A (GB)
Title: An improved railway track
IPC: E01B5/08
Filed: 1937-09-21
Abstract: 502,614. Railway rails and joints. ALGAR, S. C. Sept. 21, 1937, No. 25638. [Class 104 (ii)] Railway rails of normal section are made in two halves 1, 2 bolted together with their ends in staggered relation, so that the joints between successive sections will not occur side by side. The joint is supported in a chair 3 with one jaw 5 and'one fish-plate 7, or by two fish-plates. Recesses may be formed in the webs of the half rails, so that, when they are joined, a hollow space 8 is formed. This space may be packed or sprayed with sound - absorbing material. For electrical purposes, conducting distance pieces may be inserted between the webs of the sections, in the form of washers round the securing bolts.
Patent GB-190802-A (GB)
Title: Automatic cock for coupling-pipes of westinghouse automatic brake
IPC: F16L37/373
Filed: 1921-09-29
Abstract: 190,802. Scott, R. Sept. 29, 1921. Couplings, disconnectible, with valves and cocks.-A vehicle brake-pipe coupling of the kind provided with cocks which are opened and closed respectively by the coupling and uncoupling operation comprises a plug cock B turning in a barrel C which is held against the usual washer F by a cap D screwing into the head and making a metal-to-metalair-tight joint with the barrel. The cock is opened and closed by lugs K, L projecting from a disc A keyed on the stem of the cock and adapted to engage the existing lugs or shoulders N on the complementary coupling head. Specifications 996/94 and 2381/09 are referred to.
Patent GB-1367423-A (GB)
Title: Hot melt adhesives and their use
IPC: C09J133/06
Filed: 1972-06-02
Abstract: 1367423 Adhesive coatings REICHHOLDALBERT-CHEMIE AG 2 June 1972 [7 June 1971] 25850/72 Heading B2E [Also in Division C3]  Substrates such as textile floor coverings, heavy bituminous paper, soda kraft paper, cardboard coated with PVC and kraft paper (all in the Examples), and also plastics, leather, paper, cardboard, textiles, metals, glass, timber, decorative films, vibration damping coverings and covering strips, (all listed) are provided with a hot melt adhesive backing which comprises the reaction product of (A) 90-99.9 wt% of a copolymer of (a) 1-20wt% of one or more nitriles of one or more alpha beta ethylenic mono- or dicarboxylic acids (b) 1-20 wt% one or more amides of one or more of said acids, (c) 40-97wt% of one or more C 4-12  esters of one or more of said acids and (d) 1-30wt% of methyl methacrylate (the total of (a) to (d) being 100%), with (B) 0.1 to 10wt% of one or more epoxy compounds containing one or more epoxy groups. In the Examples the substrates referred to above in reference to the Examples are provided with adhesive backings comprising reaction products of a copolymer of acrylonitrile, acrylamide, 2-ethyl hexyl acrylate and methyl methacrylate with the following epoxy compounds: a bisphenol A/epichlorohydrin, polymer (1-4, 10, 16-18, 26 and 27); a copolymer of styrene, isobutyl acrylate and glycidyl methacrylate (5-7 and 9); a copolymer of methyl methacrylate, acrylonitrile, glycidyl methacrylate and 2-ethyl hexyl acrylate (8); epoxidised soya oil (11 and 24); an epoxidised fatty acid monoester (12 and 25); a polyol glycidyl ether (13, 14, 20-23); and a cycloaliphatic diepoxy compound. Fillers, plasticisers, solvents, ageing agents may also be present.
Patent GB-616141-A (GB)
Title: Improvements in retractable undercarriages, in particular for heavy aircraft
IPC: B64C25/14
Filed: 1946-08-28
Abstract: 616,141. Retractable undercarriages for aircraft. SOC. MESSIER. Aug. 28, 1946, No. 25871. Convention date, May 6, 1943. [Class 4] Relates to retractable undercarriages in which the part which is directly connected to the wheel slides in a guide assembly. The part 1 carrying offset the wheel 2, shown in retracted position, Fig. 3, is secured to the tube 3 sliding in guide-assembly 4 above which, when the undercarriage is in the lowered position, is a fixed vertical tube 7 into which the upper end of the tube 3 moves when the shock absorbers 9, 10 arranged parallel to tube 3 are compressed into the guide-assembly 4. Retraction is effected by jack 26 acting on strut 24, which is integral with guide 4 and is pivoted at 25. Pairs of pivoted links connect wheel-carrying part 1 to the guide 4.
Patent GB-1268820-A (GB)
Title: An arrangement for processing music
Inventor: KAWAMOTO KINJI
IPC: G10H1/043
Filed: 1969-05-21
Abstract: 1,268,820. Phase modulation. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 21 May, 1969 [22 May, 1968; 23 May, 1968 (3); 19 June, 1968 (4); 25 June, 1968], No. 25898/69. Heading H3R. [Also in Divisions G5 and H2] A phase modulator for use in an electrophonic musical instrument (see Division G5) comprises three phase-shift circuits 301, 302, 303 in which the resistors R 1 , R 2 , R 3 , respectively, are photosensitive resistors such as CdS or CdSe elements exposed to the light of lamps L 1 , L 2 , L 3  which are energized by D.C. biasing power supplies E 1 , E 2 , E 3  and A.C. modulating power supplies e 1 , e 2 , e 3 . The resistors R may be replaced by Hall effect elements. Up to 10 phase shifting circuits may be connected in cascade.