baber/WOPTO huggingface dataset:
Patent GB-1107106-A (GB)
Title: Novel triamines
IPC: A61K31/18
Filed: 1966-03-21
Abstract: Novel triamines of the formula <FORM:1107106/C2/1> (wherein n and p are each 2 or 3) are prepared by reduction of the corresponding di-(cyano-alkyl)-benzylamines, prepared in turn by N-benzylation of di-(cyano-alkyl)-amines.  In an example 3,31-benzylimino-bis(propionitrile), prepared from 3,31-imino-bis(propionitrile) and benzyl chloride, is purified via its p-toluene-sulphonate and is then hydrogenated in the presence of triethylamine to give N,N-bis-(3-amino-propyl)-benzylamine.
Patent GB-1211622-A (GB)
Title: Improvements in or relating to worm-drive clips
Inventor: HENNING WOLFGANG
IPC: F16L33/08
Filed: 1968-07-16
Abstract: 1,211,622. Band clips. W. HENNING. 16 July, 1968 [29 July, 1967; 6 June, 1968], No. 33795/68. Heading E2B. In a worm-drive clip, the worm 1 is conical at one end 3 and the worm housing 4 is provided at one end with a recess 6 for receiving the conical end 3 and the other end of the housing comprises walls 8 forming abutment means which engages the other end 10 of the worm. As shown, the rearward end 10 of the worm is plain and cylindrical and is partially surrounded by the end walls 8 of the housing. The housing may be formed from an H- shaped blank, Fig. 8 (not shown). The recess 6 may be formed as a conical or cylindrical hole and the front wall of the housing, Figs. 4 and 5 (not shown) and the cylindrical end 10 of the worm may be omitted, Figs. 6, 7, 9 and 10 (not shown).
Patent GB-789226-A (GB)
Title: Improvements in or relating to the selective transfer of electric signals
IPC: H04Q3/00
Filed: 1954-11-22
Abstract: 789,226. Electric selective signalling. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Nov. 22, 1954 [Nov. 20, 1953], No. 33818/54. Class 40 (1). [Also in Group XXXIX] A magnetic switch, like that described in Specification 765,974, [Group XXXIX], feeds information signals S, Fig. 2, from a common inlet to one of eight outlets 12, Fig. 1, the outlet being determined by three simultaneous selecting signals a, b, c persisting for five periods # of a 5-digit cycle. All the signals are binary and are provided in both true and complementary form denoted by S, A, B, C and #S, #A, #B, #C. In the signal S a binary (1) and a binary (0) are represented respectively by a change from a high-level signal to a low-level signal and vice versa in the middle of a digit period #, the signal represented by S, Fig. 2, being 01101. In the selecting signals, A, B, C, a binary (1) and a binary (0) are represented by a high-level signal and a low-level signal. In Fig. 2, the A, B, C signals shown each represent (1). A 5-digit cycle consists of five digit periods # and a spacing period #/2. The switch comprises eight pairs of magnetic cores 0, #0 to 7, #7 with rectangular hysteresis loops. The cores are reset to the N state, Fig. 3, during each spacing period. For this purpose, the cores are wound with reset windings r all in the same sense. In each pair of cores, taking 7, #7 as an example, series - connected output windings t are oppositely wound on the two cores. Three pairs of windings a, #a, b, #b, c, #c are wound on each core of the pair but a, b, c are oppositely wound to #a, #b, #c. Moreover, the directions of the windings represent in binary form the number of the core. Apart from the output windings, the two cores of a pair are similarly wound. Positive windings, such as a on core 7, each have n turns and the negative or inhibiting windings such as a on core 7 or a on core 6 each have 2n turns. The reset windings r each have 3n turns. The pentodes 11 feeding the a, #a, b, #b, c, #c windings are made conductive in accordance with the logical products of S and A, S and B, &c. but the pentodes 11 feeding the reset windings are made conductive with the logical addition of S or R and #S or #R. Thus all cores 7-0 are set to the normal state N, Fig. 3, when #S is (1) and all cores #7-#0 are set to N when S is (1). When the selecting code corresponds to a core the three-position windings thereon are energized so that the magneto-motive force from 3n turns magnetizes the core from the normal state N to state P1 in a period #/2 or to P in a period of 6, the change of flow being proportional to time. An output current is induced in the windings t during the change. If the selecting code does not correspond to the core, the 2n turns of a single inhibiting winding are sufficient to neutralize two energized positive windings and the magnetic state remain normal N. The current in the output winding t of the selected pair of cores has the same waveform as the signal S but is bi-polar.
Patent GB-881557-A (GB)
Title: Pneumatic device for separating the uppermost sheet from a pile in sheet feeding apparatus
IPC: B65H3/10
Filed: 1959-10-06
Abstract: 881,557. Feeding sheets. SPIESS, G. Oct. 6, 1959 [Oct.15, 1958], No. 33852/59. Class 100(1) Pneumatic apparatus for separating sheets from the top of a pile comprises a vertically reciprocating suction roller 3, which is freely rotatable but not driven, arranged to descend to engage the top sheet of the pile, and caused to ascend automatically when the suction opening in the roller is closed by the sheet, the sheet then being engaged and removed by a driven suction wheel 22. The rear end of a long sheet may be lifted simultaneously by a vertically reciprocating sucker 19 assisted by an air blast from a nozzle 20, or a second suction roller 3 may be used. The roller 3 is freely mounted on a shaft 5 carried by a sleeve 6 which slides over a piston 7 which is hollow and connected to a source of suction. A hollow elbow 9 on the sleeve 6 forms a suction chamber 10 within the roller 3, and the latter has peripheral slots 1 therein. When the roller 3 descends to engage the top sheet, the bottom slot 1 is sealed and the sleeve 6, carrying the roller 3 and top sheet, slides automatically over the piston 7 until a flange 12 on the sleeve meets an abutment 11: the sheet is now engaged by the rotating suction wheel 22 and is removed, the roller 3 rotating freely but holding the sheet to its periphery and assisting the removal. The lower limit of the descent of the sleeve 6 relatively to the piston 7 is defined by a latch 14. Pile raising control:-A valve 18, Fig. 2, associated with a known device which raises the sheet pile by suction-operated means, is opened when an inclined surface 16 on the sleeve 6 engages a tappet 17 of the valve. Thus, when the suction roller 3 has to descend below a predetermined level to engage the top sheet of the pile, the pile is raised.
Patent GB-994187-A (GB)
Title: Improvements in or relating to surgical tables
IPC: A61G13/00
Filed: 1961-09-21
Abstract: 994,187. Surgical tables. RITTER CO. Inc. Sept. 21, 1961 [Sept. 22, 1960], No. 33877/61. Drawings to Specification. Heading A4H. The pelvic section of a surgical table is pivotally supported by three hydraulic rams operable to tilt the table about two mutually perpendicular axes. The disclosure is the same as that of Specification 990,737.
Patent GB-944357-A (GB)
Title: Method of, and apparatus for, folding blanks in folding-glueing machines
IPC: B31B50/54
Filed: 1961-09-21
Abstract: 944,357. Making cartons; folding edges on non-metallic sheet material. J. BOBST ET FILS S.A. Sept. 21, 1961 [Oct. 6, 1960; May 29, 1961], No. 33893/61. Headings B5D and B5K. In a folding gluing machine, flaps 10, 11, on blank 9 (Fig. 2) are bent up by air blasts from nozzles 12, 13, the blasts being controlled by an electromagnetic valve operated when the blank 9, travelling in the direction of the arrow 14, breaks light beams 17, 18 of photo-cells 15, 16 which are arranged to control said valve. In other modifications (not shown), metal feelers may replace the photo-cells or micro-switches may be used to detect the passage of a previously folded flap. All means of detecting the travelling blank are adjustable to allow for increasing speed of passage and different shapes of blank to be folded. In a modification, Fig. 5, the micro-switch 31 with detector arm 33 is held between rails 38, 39 and connected by a bar 40 to a piston 41 which in turn is acted upon by spring 43. As the speed of the machine is increased a band 46 drives a pump 45 faster and air travelling through a tube 44 forces the piston 41 back against the spring 43. The detector arm is thus moved in the opposite direction to that of the moving blanks, arrow 37, and so compensates for increasing speed. An adjustable air escape valve 47 is provided.
Patent GB-757931-A (GB)
Title: Improvements in or relating to attenuators
IPC: H03H7/24
Filed: 1953-12-07
Abstract: 757,931. Coaxial line attenuators. SHERIDAN, V. A. Dec. 1, 1954 [Dec. 7, 1953], No. 33937/53. Class 40 (8). [Also in Group XXXVII] A # network attenuator for use up to frequencies of about 100 Mc/s. comprises series and shunt resistors 5, 8 enclosed within an outer conducting shell built up from a number of separate components. The attenuator may be built from a pair of identical halves 1a, 1b, constituted by pressings of e.g. sheet copper. Flanges 4 may be provided to facilitate joining the halves together by e.g. welding or soldering. The series resistors 5 are held in position by flanged bobbins 6 of insulating material. The shunt resistors 8 are supported by conductor wires 9, 11 or by locating discs (not shown). The end conductor wires of the first and last series elements 5 are joined to hollow plugpins 16 carried by end caps 15. In a modified form of construction, Fig. 4 (not shown), each arm of the outer conductor is constituted by a complete tube and the shunt arms are inserted into apertures in the wall of the series arm. A number of attenuators 1 having different attenuation values may be mounted in a cage structure at equi-angular positions around a spindle between circular cheek plates keyed to the spindle. Axial displacement of a control knob on the spindle actuates a mechanism for connecting to an external circuit whichever of the attenuators has been selected by rotation of the knob (see Group XXXVII).
Patent GB-1161555-A (GB)
Title: Improvements in and relating to Fractional Distillation
IPC: B01D3/00
Filed: 1966-07-28
Abstract: 1,161,555. Fractional distillation with live steam. EDELEANU G.m.b.H. 28 July, 1966 [28 July, 1965], No. 33967/66. Heading BIB. A distillation column 1 is divided into two sections by a partition 2 and contains perforated contact trays 3 on which a rising vapour contacts a downwardly flowing liquid, the liquid passing from the upper to the lower section through a U-shaped trap 13; steam is supplied to the lower section at 4 and steam and vapour from the lower section is withdrawn therefrom  by a steam injector 6 and passed into the upper section. The device for transferring liquid from the upper to the lower section may include a heating coil. The separation of solvent (e.g. dichloroethane or furfural) from hydrocarbon oil is referred to.
Patent GB-342768-A (GB)
Title: Improvements in or relating to acoustic horns
IPC: H04R1/30
Filed: 1929-11-07
Abstract: 342,768. Sou n d magnifying and directing appliances. ELECTRICAL RESEARCH PRODUCTS; Inc., 195, Broadway, New York, U.S.A.-(Assignees of Stanton, D. G.; 38, Burnett Terrace, Maplewood, New Jersey, U.S.A.) Nov. 7, 1929, No. 33997. Convention date, Nov. 24, 1928. [Class 13.] A sound-amplifying horn is formed of plywood sheets joined by wooden corner strips so as to produce an all-wood inner surface. In the form shown, the horn comprises two wood sections 25, 26 carried by a metal throat-piece also formed in two parts 10, 18, the parts 18, 25, 26 and the outer end of the part 10 being of rectangular section. The parts 25, 26 are built up from ply-sheets 30, 33- 31, 34 secured by external corner strips 27, 29 respectively, and are connected by bolts 46 passed through end-cleats 43. The inner end of the part 25 is similarly secured to the throat-section 18, and bracing-members 62, 66, 67 are fitted between the part 25 and the throat-section 10.
Patent GB-783941-A (GB)
Title: Improvements in or relating to the automatic metering of calls in telecommunication exchanges
Inventor: LOWRY LEONARD POWELL
IPC: H04M15/10
Filed: 1955-11-28
Abstract: 783,941. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Nov. 28, 1955, No. 34017/55. Class 40(4). Calls are automatically metered at the end of timed intervals and are metered on termination of a call if this occurs before the end of the first timed interval. In the portion of a final selector circuit shown in the drawing relays D and F (not shown) operate when a called subscriber replies. F disconnects ringing tone from the line and connects a metering relay M to equipment, common to a number of final selector circuits, which provides earth pulses to operate M at three minute intervals. D energizes a slow-to-operate relay E (not shown) and operates relay J which holds up over contact m3 and rotary off-normal springs NR. When M responds to the first three minute pulse, J falls back for the remainder of the call while positive battery is connected to the P wire by contact m2 to operate the subscriber's meter. A contact j4 connects a circuit to relay A so that warning tone may be applied to the line shortly before subsequent operations of M. For the first metering pulse earth is applied to the P wire over contact j1 and rectifier MR, and for subsequent pulses with J released the connection is guarded by contact m1 which makes before contact m2 breaks. If the connection is released before the first operation of M, relay B falls back before J and during the time taken to release contact j2 the subscriber's meter is operated.
Patent GB-467233-A (GB)
Title: Improvements relating to valve-actuating mechanism
IPC: G01F3/22
Filed: 1935-12-09
Abstract: 467,233. Gas meters. ALLGEMEINE ELEKTRICITATS-GES. Dec. 9, 1935, No. 34122. Convention date, Dec. 8, 1934. Addition to 456,013, [Group XXIV]. [Class 54] [Also in Group XXIV] The parent Specification describes mechanism for actuating two valves, such as those of a dry gas meter, in such a way that one is closed as the other is opened in which there is provided an auxiliary stop device which, after changeover has been effected, holds the valve changeover lever in its new end position until the main stop member on the lever is engaged by the corresponding movable segment. According to the invention, the auxiliary stop device which, in effect, forms an extension of the segment, is so arranged that with normal deflection of the parts it assumes its locking position without striking against the corresponding segment. A shaft 1, oscillated by the diaphragm of the gas meter, has fixed to it a plate 2 carrying the segments 3. The valve change-over lever is controlled by the plate 2 as described in the parent Specification, the spring between these parts not being shown. The segments have slots at 31, 32. An auxiliary stop device 5 in the form of a balance-beam is pivoted on the shaft 1 and is connected to the plate 2 by a spring 6 which causes the device 5 to assume a definite position. As shown, the change-over lever 4 has its projection 4<1> held by the device 5, the right-hand segment 3 not yet having engaged this projection. If now the plate 2 moves clockwise, the device 5 also makes this movement due to spring 6 until it abuts the left-hand projection 4<11> of the lever 4. During this movement, right-hand projection 41 passes on to right-hand segment 3 by which it is held. Plate 2 now moves on alone and, as soon as right-hand segment 3 releases projection 4<1>, the lever 4 springs to the left, and the device 5 quickly moves in the direction of plate 2 into the slot 31 and locks the left-hand projection 411. In a modification, the auxiliary stop device is in the form of a spring coiled round the shaft 1, the free ends of the spring being bent downwardly to take the place of the ends of the device 5. In the case of abnormal movement where the stop device may strike the segments, sound damping members, e.g. of hard paper may be provided to deaden the noise.
Patent GB-1529495-A (GB)
Title: Concentrated polychloroprene latices with reactive groups
IPC: C08F2/00
Filed: 1976-08-17
Abstract: 1529495 Polymerization of chloroprene BAYER AG 17 Aug 1976 [20 Aug 1975] 34194/76 Heading C3P A concentrated chloroprene polymer latex is produced by copolymerizing chloroprene with an olefinic carboxylic acid in aqueous medium comprising 75-95 parts by wt. water and 3-6 parts by wt. of at least one ionic emulsifier active in acid and neutral pH conditions (based on 100 parts by wt. total monomer), the poly. merization being carried out at pH # 7, at 30- 70‹ C. to a conversion of at least 90%. Optional ingredients are 0À5-6 parts by wt. of at least one non-ionic surfactant and 0À2-2 wt. parts of one or more other surfactants. In examples chloroprene is copolymerized with methacrylic or acrylic acid, using a paraffin sulphonate, or isododecyl benzene sulphonate as the essential surfactant.
Patent GB-1508689-A (GB)
Title: Foldable baby carriage
IPC: B62B7/06
Filed: 1976-08-17
Abstract: 1508689 Folding push-chair PEREGO-PINES SpA 17 Aug 1976 [26 April 1976] 34227/76 Addition to 1507592 Heading B7B The foldable push-chair described in Parent Specification 1,567,775 is adapted to ensure positive folding of the rear legs 4 by the addition of a second X-shaped cross-piece, each member A thereof being pivoted at its upper end to one of the rear legs and at its lower end to a tie rod d, the other end of which is pivoted to the other rear leg. Each sleeve C accommodates a spring m which is placed under load by an end of a rod a pivoted to a respective rear leg 4 when the rear leg moves away from the front leg or the sleeve slides down the front leg.
Patent GB-857760-A (GB)
Title: Improvements in and relating to sieve drum driers
IPC: D21F5/02
Filed: 1957-11-04
Abstract: 857,760. Drying apparatus. FLEISSNER, J., FLEISSNER, H., and FLEISSNER, G., [trading as FLEISSNER & SOHN MASCHINENFABRIK.] Nov. 4, 1957 [Nov. 23, 1956], No. 34348/57. Class 34(1) In a drier having rotatable perforate drums 11, 12, Fig. 1, over which an impermeable web 13 is adapted to pass, each drum, which has perforated central and edge zones 24,. 23, Fig. 2, has its lower or upper periphery covered externally by a longitudinally-disposed, air-discharge unit 21 and its upper or lower periphery covered internally by a screen 16 or 17. Hot air from the units 21 impinges upon the web 13 and is drawn into the associated drums 11 or 12 through the edge zones 23 by a fan 18 or 19. The fan 18 blows air from the drum 11 over a heater 19A to the unit 21 associated with the drum 12, whilst the fan 19 similarly serves the unit 21 of the drum 11.
Patent GB-212329-A (GB)
Title: Improvements in gas cookers
IPC: F24C15/32
Filed: 1922-12-16
Abstract: 212,329. Lilley, J. H., and Cowen, M. Dec. 16, 1922. Gas cooking-stoves; gas fires.-In a gas cooking-stove, of the kind comprising two ovens 1, 2 arranged one on each side of an incandescent gas fire, the burner 10 which heats the asbestos fuel 3 is connected to a gas supply by a flexible, pipe 11 so that it may be removed and used independently. The gases from the fire pass round the ovens 1, 2, part of the walls of which may be perforated, and escape to the flue through outlets 8, 9. Reference has been directed by the Comptroller to Specifications 20724/07 and 158,602.
Patent GB-1489448-A (GB)
Title: Manufacture of hollow workpieces
IPC: B21D22/20
Filed: 1975-08-19
Abstract: 1489448 Deep drawing B AVITZUR 19 Aug 1975 [26 Sept 1974] 34383/75 Heading B3Q Tubular or cup-shaped blanks, e.g. can or shell ammunition bodies or tubes, are wallironed between a punch and die with a smaller frictional force at the die than at the punch, the blank being forced to leave the die at a speed exceeding that of the punch so that forward slip occurs over the punch of the ironed part of the blank. Thus a shorter punch may be used and stripping is facilitated being completed by compressed air introduced through the punch with or without assistance from external or internal mechanized strippers, Figs. 13 and 14 (not shown). A valve 54, Fig. 12, operated by a switch 56 when the blank is about to leave the die or substantially at the start of ironing supplies the compressed air. Alternatively, particularly when a tube is being wall-ironed, stripping may be by power-driven rolls engaging the outside of the tube. The process may be applied when back pull is effected, due to combining deep drawing and wall-ironing, and when forward extruding pressure is applied. To obtain forward slip the following reduction rate must be exceeded wherein t o = original thickness of the side wall t f = final thickness of the side wall E xp = exponential function # xb =pull stress # o  = flow stress L = length of cylindrical die-part. To keep the ironed portion free of tensile stress the semi-conical or substantially semiconical angle α, Fig. 1, of the die will be in accordance with the formula where m 1  and m 2  are respectively the friction factors of the die and punch, and E is the elliptic integral. The Specification includes also other formulµ including one (23a) for power requirement.
Patent GB-982525-A (GB)
Title: Gas and liquid contact device
IPC: B01D3/18
Filed: 1962-09-10
Abstract: 982,525. Gas scrubbers. B. BLACK. Sept. 2, 1963 [Sept. 10, 1962], No. 34526/62. Heading B1R. Gas to be cleaned is passed concurrently with washing liquid from sprays 18 through slots 15 in a horizontal tray 2, each slot having arranged above it a chimney 20, the lower edges of the chimneys being spaced from the upper surface of the tray and the gaps so formed sealed by liquid supplied to the upper surface of the tray. A vertical baffle is arranged in each chimney and a moisture eliminator 6 is positioned below the gas outlet 7. Liquid is supplied to and withdrawn from the tray via weir 26 and downcomer 10 respectively as shown in Fig. 1. In a modification, Fig. 9, the liquid is first supplied to a perforated horizontal tray 39 and then flows to the tray 2. In a further modification two perforated trays are disposed above the tray 2 and liquid being fed to the upper perforated tray and upwardly directed sprays are positioned below each of the perforated trays.
Patent GB-487822-A (GB)
Title: Improvements in and relating to the tempering of glass
IPC: C03B27/00
Filed: 1937-12-14
Abstract: 487,822. Tempering glass. PILKING- TON BROS., Ltd. Dec. 14, 1937, No. 34543. Convention date, Dec. 22, 1936. Drawings to Specification. [Class 56] A glass sheet or article is so tempered that the ratio of the maximum compressive strain at the surface to the maximum tensile strain in the body of the glass is four or more. For this purpose, the heated glass is first chilled very rapidly and then, while the central portion of the glass is still plastic, is chilled at a lower rate. Methods of chilling are described in the Specification. Specification. 454,374 is referred to.