baber/WOPTO huggingface dataset:
Patent GB-1231893-A (GB)
IPC: H02J13/00
Filed: 1968-05-09
Abstract: 1,231,893. Tuned relays. ZELLWEGER Ltd. 9 May, 1968 [27 July, 1967], No. 22010/68. Addition to 1,139,337. Heading H1N. [Also in Divisions H3-H5] A tuned relay used in a ripple control signalling system (see Divisions H3-H5), comprises two contacts 27, 28 of such a mass and biased toward the centre contact 17 with such a force that at a predetermined amplitude of vibration of the centre contact one or other of the contact sets 8, 9 is always open, while below that amplitude, or at a different frequency, there will always be a time during each period of vibration when the closed period of the contacts will overlap, providing a complete circuit from contact 27 to a contact 28. The centre contact is mounted on a tuned reed and the outer contacts either spring-biased as in Fig. 2, or biased by the action of gravity on their masses, Fig. 3 (not shown). The outer contacts can be mounted on springs or pivoted levers.
Patent GB-1253257-A (GB)
IPC: B60T8/1763
Filed: 1969-02-24
Abstract: 1,253,257. Anti-skid brake control systems. KELSEY-HAYES CO. 24 Feb., 1969 [29 Oct., 1968], No. 9862/69. Heading F2F. An anti-skid brake system is controlled in accordance with dv/dt and d 2 v/dt<SP>2</SP> (v = wheel speed) so that the system cycles during braking using complete or partial brake-pressure release. As described the average velocity of the two rear wheels is derived (at point 76), Fig. 6 (not shown) and applied to parallel channels, the   upper producing dv/dt and the lower d 2 v/dt<SP>2</SP>. These two signals are fed to an amplifier providing feedback reference signal to the threshold amplifier in the lower channel. This circuit is an alternative to the single circuit with two differentiators in series feeding logic gates disclosed in Application No. 9121/69.
Patent GB-1257425-A (GB)
IPC: G11B23/107
Filed: 1970-04-24
Abstract: 1,257,425. Tape cassettes. INTERNATIONAL BUSINESS MACHINES CORP. 24 April, 1970 [1 May, 1969], No. 19724/70. Heading G5R. [Also in Division G2] A film or tape cassette comprises a take-up reel 7 having a base 11, a cylindrical side wall 10 with an open top, and hub 8, the reel being rotatably mounted on spindle 4 of a bottom cover 1, and a fixed spiral tape guide 12 located above the reel 7 and having a tape entrance guide 14 aligned with slit 3 in the cover 1 such that tape fed into the cassette is guided to engage and coil inwardly of the side wall 10, the frictional engagement with this wall causing the reel to rotate. A modification provides for wall 10 to be detachable and cover disc to rest on the coiled tape in the manner of a normal double-flanged reel. Tape may therefore be withdrawn from the inner turn of the coil through guide 14, or from the outer turn with wall 10 removed.  A further modification provides an exit slit in wall 2 of cover 1 with a catch to engage the leading end of the tape and a guide to pick up the end for withdrawal.
Patent GB-1257954-A (GB)
IPC: F42B12/68
Filed: 1969-05-29
Abstract: 1,257,954. Line-throwing rocket; line throwing apparatus. A. J. SCHERMULY. 28 May, 1970 [29 May, 1969], No. 27185/69. Headings F3A and F3C. A line throwing rocket comprises a cylindrical casing 1, a rocket motor 7 having a choke 8, and a pivoted bridle 3 to which one end 10 of the line can be attached, the bridle being so shaped that in at least one position it lies wholly within an envelope formed by an extension of the generatrix of the casing. The rocket also includes a buoyancy chamber 4. The rocket can be fired from a smooth barrelled discharger and may be housed in a bore defined by an annular cop of the line. The line may be coated with wax and the wax coating on those portions of the innermost turns of the line which define the bore may have been smoothed by the insertion of a heated mandrel into the cop. The rocket can also be fired from the discharger described in Specification 1,176,151.
Patent GB-1259584-A (GB)
IPC: B65D85/32
Filed: 1970-03-13
Abstract: 1,259,584. Egg cartons. PACKAGING INDUSTRIES Inc. 13 March, 1970 [8 April, 1969], No. 12196/70. Heading B8P. An egg carton 11 having top and bottom portions 12 and 13 includes cut-outs 32 along a longitudinal edge of the bottom portion 13 and lips 36 formed in the corresponding edge of the upper portion 12. When the carton 11 is closed the lips 36 engage in the cut-outs 32 to prevent appreciable relative longitudinal movement between the two said edges. The carton has a number of latches each comprising a hook 25 formed by the upper end of a protrusion 27 extending from the bottom portion 13 and an outwardly extending boss 34, in which is pressed an inwardly extending detent 26, formed in a longitudinal side wall 21 of the top portion 12. When the carton 11 is closed the detents 26 engage under the hooks 25. In the embodiment shown the top and bottom portions 12 and 13 are coupled by an integral hinge 14. However in an alternative embodiment the top portion may be completely removable, in which case latches are provided along both pairs of longitudinal edges. The carton can be formed from foamed polystyrene.
Patent GB-1288862-A (GB)
IPC: B65D88/66
Filed: 1970-02-02
Abstract: 1288862 Pneumatic emptying of hoppers; vibrating hoppers KOCKUMS MEKANISKA VERKSTADS AB 2 Feb 1970 [3 Feb 1969] 4921/70 Headings B8A and B8S To facilitate the discharge of granular material from a hopper, an aperture in the sloping wall 11 of the hopper is covered, on the inside, by a gas-permeable frusto-conical cap 15 and, on the outside, by a frusto-conical cap 14 secured to a housing 19 carrying a pneumatic siren sound transmitter 21. The transmitter is connected to a resonator horn 22 and is actuated by compressed air supplied through a line 23. Further compressed air may be supplied to the chamber defined by the caps 14, 15 through a line 29, which may, alternatively, be open to atmosphere if air is not to be supplied to the material.
Patent GB-1290745-A (GB)
Inventor: KARLSTROM K R M
IPC: B65G47/48
Filed: 1970-01-30
Abstract: 1290745 Tow truck conveyer systems AMERICAN CHAIN & CABLE CO Inc 30 Jan 1970 [31 Jan 1969] 4462/70 Heading B7L A tow truck conveyer system comprises a plurality of tow trucks 12, each having a tow pin 13 extending dowardly through a slot 11 in a floor 10, a conveyer chain 14 extending and drivable along the slot 11 and having recesses 24 in some links 23a for engaging the tow pins 13, displacing means for moving a portion of the chain 14 transversely with respect to its direction of longitudinal movement which means comprises a stop mechanism 16 having a housing 17 and a movable track section 21 of U- shaped cross-section mounted in the housing 17 for movement in a direction transverse to that of longitudinal movement of the chain 14 along the section 21, and tow pin directing means which comprise a cam portion 22 on the upper part of one of the leg portions of the track section 21. The cam portion 22 is of a width such that, when the track section 21 is moved out of the driven path of the tow pin 13, the cam portion 22 partially overlaps this driven path. The track section 21 is moved by a pair of levers 34, 36 pivoted to one another and to an actuating member 38 of an actuator 40 by a bolt 39, the lever 34 being pivoted at the end remote from the bolt 39 to a plate 25 by a bolt 35 and the lever 36 being pivoted at the end remote from the bolt 39 to the housing 17. Rearward movement of the tow pin 13, after it has been moved upwards on to the surface of the cam portion 22 is prevented by a lever 49 pivoted to the track section 21 at 50 and having a spring 51 urging the lever 49 into the path of the tow pin 13. A stop 52 on a wall 27 limits any inadvertent forward movement of the tow pin 13 when in its elevated position.
Patent GB-1294984-A (GB)
IPC: C07C209/00
Filed: 1970-08-26
Abstract: 1294984 Hydrogenated xylylene diamine derivatives FARBWERKE HOECHST AG 26 Aug 1970 [26 Aug 1969] 41029/70 Heading C2C The invention comprises compounds of the formula where n is an integer from 1 to 10, R 1  is a hydrogen atom or the group R 2  is a NH 2  or group, the linkages of the rings are meta and/or para with, optionally, up to 10% ortho linkages, and in which the rings may be substituted preferably by alkyl C 1-5  radicals. They are prepared by (a) reacting an #,#<SP>1</SP>-dihalide with an #,#<SP>1</SP>-diamine in a molar ratio of at least 1 : 2, optionally in the presence of ammonia or (b) reacting m- and/or p-xylylene diamine, optionally with up to 10% o-xylylene diamine with hydrogen at 150 to 19 C. and a hydrogen pressure of from 150 to 200 atm. gauge until there is a substantial decrease in the rate of absorption of hydrogen, in the presence of a nickel catalyst which may contain small amounts of one or more heavy metals.
Patent GB-1297986-A (GB)
IPC: C07C69/54
Filed: 1970-06-04
Abstract: 1297986 Hydroxyalkyl acrylates or methacrylates MITSUBISHI GAS CHEMICAL CO Inc 4 June 1970 [5 June 1969] 27094/70 Heading C2C Hydroxyalkyl acrylates and methacrylates are recovered by incorporating in the mixture at least one polyalkylene glycol of formula HO-(-CH 2 -CH(R)-O-) n -H where R represents a hydrogen or methyl group and n is an integer of 3 to 20, or a glycol of 4-10 C atoms with a linear polymethylene chain with at least 4 C atoms at least two of which are substituted by an hydroxy group, the polyalkylene glycol having a B.P. higher than the esters, and distilling the esters from the mixture. Glycols mentioned are polyethylene, polypropylene, polybutylene glycols, tetramethylene glycol, 1,4- pentanediol, 1,4-, 1,5-, and 2,5-hexanediols, pentamethylene glycol, and heptamethylene glycol, and an amount of at least 0À5 wt. per cent preferably 1 to 10 wt. per cent on the crude is used. The glycol may be added during the synthesis step or prior to the distillation. The crudes may be those obtained by the reaction of alkylene oxides with acrylic or methacrylic acid or of alkylene chlorohydrins with the sodium salt of acrylic or methacrylic acid.
Patent GB-1303905-A (GB)
IPC: G11C11/06
Filed: 1971-04-13
Abstract: 1303905 Magnetic storage arrangements PLESSEY CO Ltd 12 Nov 1971 [13 April 1971] 9285/71 Heading H3B A two-core-per-bit storage unit comprises a pair of cores C1, C2 which are initially set to state " 1 " by a write signal IW in a common write winding W, and are then cyclically switched in turn to state " 0 " and back to state " 1 " by a read pulse in a respective read winding R1, R2, followed by a restore pulse in the write winding, the commencement of cyclic switching inducing an output in a sense winding S1, S2 which switches a toggle 7 to state " 1 ", the sustained output 0 of the toggle being fed back periodically to the write winding to effect restoration of the " 0 "-switched core. The write signal IW is applied to the write winding through gates G1 and G2 in time position t 1 , the read pulses are applied to the read windings in time positions t 2  and t 4  respectively, and the restore pulses are applied to the write winding W, under toggle control, through gates G3, G4 and G2 in time positions t 3  and t 5 . The unit is cleared by an erase signal IE of one pulse cycle plus one pulse width duration, this signal inhibiting gate G4 to suppress the core restoration pulses and opening gates G5 and G6 in time position t 6  to switch the toggle to state " 0 ". The toggle inhibits the write signal circuit at gate G1, and in the event of power failure is switched to its state " 0 " by a pulse rst when the power is resumed. If the unit was previously storing a digit " 1 ", at least one core will be in the " 1 " state during the period of power absence so that read out of this core in time position t 2  or t 4  will restore the toggle to state " 1 ". A five time position cycle t 1 -t 5  may alternatively be used, the time positions in which the gates are pulsed being indicated in parenthesis in Fig. 1. A common write and erase circuit may be used in the latter embodiment by including the link a, the first application of a pulse to this circuit causing a write operation and the second application erasure of the stored digit. The gates may be formed by a group of metal oxide silicon transistors, Fig. 2 (not shown) provided on an integrated circuit clip.
Patent GB-1306010-A (GB)
IPC: F16H29/00
Filed: 1971-08-05
Abstract: 1306010 Ratchet mechanisms CREED & CO Ltd 5 Aug 1971 36828/71 Heading F2Q Intermittent stepped rotation of a driven wheel 13 is effected by a pawl 11 carried by a reciprocating rod 9 connected by a crank 10 to a cam or eccentric 2 fast with a continuously rotating driving shaft 1, the free end 8 of the rod 9 slidably engaging in a slotted end 7 of a lever 3 which is pivoted at 4 and spring urged at 5 into engagement with the cam 2 whereby at the end of each successive drive step the cam 2 lifts the lever 3 thus disengaging the pawl 11 which is then returned for another stroke, the pawl 11 re-engaging the next appropriate slot 12 on the periphery of the driven wheel 13 as the lever 3 again descends in the next cam revolution. The lever 3 may be held inoperative by a latch 6 in a position corresponding to the maximum lift of the cam 2 whereby the driving shaft idly reciprocates the pawl 11.
Patent GB-1306373-A (GB)
IPC: C08J9/00
Filed: 1970-01-30
Abstract: 1306373 Foamed polyolefin films IMPERIAL CHEMICAL INDUSTRIES Ltd 30 Dec 1970 [30 Jan 1970] 4647/70 Heading B5B [Also in Division C3]  A process for improving the bonding properties of at least one surface of a film of a foamed blend containing 60 to 90% by weight of an ethylene homopolymer of less than 0À934 gm./c c. and correspondingly 40 to 10% by weight of a crystalline polyolefin said percentages being based on the combined weight of the ethylene homopolymer and the crystalline polyolefin comprises subjecting the film to a surface treatment. The film may be a foamed blend containing 60 to 90% by weight of a low density polyethylene (i.e. homopolymers and copolymers of ethylene having a density less than 0À934 g./c.c.) and corresponding between 40 and 10% by weight of a crystalline polyolefin said percentages being based on the combined weight of the low density polyethylene and the crystalline polyolefin, the film having an open cell structure of between 40 and 90% by volume of open cells, at least one surface of the film having been subjected to surface treatment to improve the bonding properties. Preferably the films, which may be used as wall and ceiling covering materials, include 5 to 20% by weight of titanium dioxide and 0À05 to 1À0% by weight of metallic aluminium particles of medium size at least 20 Ám as opacifying agent. If some greyness can be tolerated up to 100 parts per million of carbon black may be included to improve opacity. The surface treatment of the film may be a physical or chemical treatment or the film may be coated with a layer of a more polar material, e.g. the surface of the film may be subjected to chemical oxidation by a mixture of chromic and sulphuric acid, or physically treated by subjecting the surface of the foamed film to corona discharge treatment or by coating with a layer of a polar polymer such as chlorinated polythene which may be applied as a solution and the solvent evaporated off. The blends containing a blow agent may be extruded from an annular or a slot die but preferably by extruding through an annular die and to inflate the tube so produced. The blend of the polyolefines and the blowing agent system may be mixed maybe in a pressure vessel. The first blowing agent which is completely miscible with the blended polyolefines to be foamed must have a b.pt. below the temperature at which the homogeneous mixture is extruded. The most suitable first blowing agents are liquids whose b.pts. at atmos. pres. are greater than 20‹ C. and are at least 10‹ C. below the extrusion temp. of the mixture. Examples of liquids used as first blowing agent include saturated and unsaturated hydrocarbons, petroleum ethers and halogenated hydrocarbons and preferably pentane, 1,1,2 - trichloro - 1,2,2- trichloroethane, hexane, petroleum ether (B.P. 40‹ to 60‹ C. or 60‹ to 80‹ C.) or methylene chloride. The concentration of the first blowing agent should not exceed 10% by wt. The second blowing agent is normally a gas or a low boiling liquid and preferably carbon dioxide or nitrogen in a concentration of not exceeding 0À05% by weight.
Patent GB-1307312-A (GB)
Title: Pump and a diffuser for the pump
IPC: F04D29/44
Filed: 1970-03-31
Abstract: 1307312 Centrifugal pumps WEIR PUMPS Ltd 19 April 1971 [31 March 1970] 15292/70 Heading F1C A diffuser for a centrifugal pump, arranged tangentially relative to the circle defined by the tips of the impeller blades comprises a divergent diffusing section 20, Fig. 2, downstream of a part-cylindrical passage and a convergent intermediate section, the intersection of the intermediate section and the diffusing section defining a throat 22, the ratio of the cylindrical passage diameter to the greatest length of the passage between the chamber and the throat being substantially 2À7 and the ratio of the passage diameter to the throat diameter being substantially 1À5. The pump 10 comprises a step-up gear train 11 driven by an electric motor 12. An impeller 43 draws fluid through an inlet 15 into the chamber 14 from where impellers 17 deliver the fluid via the diffuser 23.
Patent GB-1307429-A (GB)
Title: Heat exchangers
IPC: F28F1/08
Filed: 1970-11-28
Abstract: 1307429 Heat exchange elements WILKINS & MITCHELL Ltd 26 Nov 1971 [28 Nov 1970] 56638/70 Heading F4S [Also in Division B3] A heat exchange element of tubular form Fig. 2, is made by bending a length of corrugated metal sheet about an axis 17 extending transverse to the length of the corrugations and then securing together the end portions of the sheet, the corrugations in one end portion being laterally off-set (e.g. by half the wave length of a corrugation or a multiple of this distance) so that the corrugations of the respective end portions nest with one another when brought together. The corrugations are formed by rolling and the off-setting is effected in one method by rolling the corrugations parallel with the sheet edges and then removing a triangular portion 15, Fig. 1, of each edge so that the corrugations become effectively inclined to the sheet edges. A short corrugation 16 is then formed at each end of the sheet so that when the sheet is bent to the form shown in Fig. 2 all the corrugations will nest at the sheet ends. In another method (Figs 4 to 6) the metal sheet is passed transversely between profiled rolls to form corrugations each comprising three lengths (25, 26, 27) parallel to the sheet edge but progressively offset laterally from one another; these lengths being interconnected by short corrugation lengths (28, 29) inclined to the sheet edges. At diagonally opposite corners of the metal sheet the corrugations (31, 32) nearest the sheet edge stop short of the sheet ends so leaving at each end of the sheet a flat portion for welding to a corresponding portion at the other end of the sheet when the sheet is bent to form the element.
Patent GB-1309544-A (GB)
Title: Display support
IPC: G09F1/12
Filed: 1969-03-19
Abstract: 1309544 Display stands; hanging displays J M GOLDIE 19 June 1970 [19 March 1969] 14415/69 Headings A4H A4U and A4X A display support in which the peripheral edges of a card 10 carrying display matter and a back sheet 11 of cardboard, plywood or rigid plastics material are held together by U-section plastics material clips 12, is supported in an upright position by engagement of one of the clips between a pair of wire members 15 upstanding from a wire base 14. The wire base 14 may also be used for hanging the support from a wall.
Patent GB-1313319-A (GB)
Title: Method of and apparatus for keeping flowers fresh in hot  premises
IPC: A01G5/00
Filed: 1970-09-23
Abstract: 1313319 Flower-holders, flower bowls; flower stands, article display stands B A NYGREN 23 Sept 1970 45326/70 Headings A4H and A4U [Also in Division F4] Apparatus for keeping flowers fresh in hot premises comprises a bottom structure 1 with openings for tubs 3 containing sleeve-like vases 5, a plate 6 of glass or transparent plastics material mounted vertically between uprights 7 and a cooling coil battery 12 for cooling air. In operation the cooled air passes downwardly over the surface of plate 6 until it meets guide members 13 which are arranged to divert the air obliquely so that it spreads over the flowers. (For Figure see next page)
Patent GB-1323066-A (GB)
Title: Purification of 4-methyl-2,6-di-tert butyl phenol
IPC: C07C67/00
Filed: 1969-10-13
Abstract: 1323066 Purification of 4-methyl-2,6-di-tbutyl phenol IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Oct 1970 [13 Oct 1969] 50126/69 Heading C2C A process for purifying 4-methyl-2,6-di-tert.- butyl phenol comprises a first crystallization stage in which liquid crude 4-methyl-2,6-di-tbutyl phenol is contacted with an alcohol having from 1 to 3 carbon atoms and water to produce crystals of 4-methyl-2,6-di-tert.-butyl phenol, and a second crystallization stage in which the crystals from the first stage are re-crystallized from an alcohol having 1 to 3 carbon atoms and the mother liquor from the second crystallization stage is returned to the first crystallization stage.
Patent GB-1323699-A (GB)
Title: Method for dlarifying titanium sulphate solutions
IPC: C08F8/00
Filed: 1969-11-05
Abstract: 1323699 Clarifying titanium sulphate solutions DOW CHEMICAL CO 30 Sept 1970 [5 Nov 1969] 54285/69 Heading C1A Black liquors, obtained by the extraction of titanium ores with sulphuric acid, are clarified by addition of a water soluble cationic polymer flocculant having monomer units thus:- where R<SP>1</SP> is H or CH 3  and R 1  and R 2  are alkyl groups. The polymer is prepared by reacting an acrylamide polymer, a secondary amine, and formaldehyde and is added to the black liquor rapidly and to a region of high shear.
Patent GB-1328107-A (GB)
Title: Dyeing process
IPC: D06P3/26
Filed: 1969-12-30
Abstract: 1328107 Dyeing polyester with disperse dyes CIBA-GEIGY (UK) Ltd 22 Dec 1970 [30 Dec 1969] 63187/69 Heading D1B Polyester fibre is dyed with an aqueous dispersion of a disperse dye in presence of a compound of formula R-O-(-CH 2 CHXO-) n -H in which R is phenyl or a chloro-substituted phenyl group, n is an integer I to 3, X is hydrogen or methyl, X being methyl when n is 1 and at least one X being methyl when n is 2 or 3 or a compound of formula R-O-(-CH 2 CH 2 O-)- n H in which R is a chlorosubstituted phenyl grouping and n is an integer 1 to 3, in the absence of a di- or tri-chloro benzene or of an added emulsifier. Preferred compounds are those derived from 1 mole of ethylene oxide and 1 mole of ortho, meta or para-chlorophenol, dyeing may be at 115- 135‹C or by boiling, continuous process also being specified.
Patent GB-1337429-A (GB)
Title: Coating apparatus for applying a coating substance to a  running web such as a paper web
IPC: B05C1/08
Filed: 1970-11-12
Abstract: 1337429 Web coating apparatus J M VOITH GmbH 12 Nov 1970 26573/73 Divided out of 1337428 Heading D1L [Also in Division B2] Apparatus for coating a web comprises an applicator roller 1 with a nozzle applicator 2 located adjacent thereto and extending along the applicator roller. A doctor blade 3 being provided to meter the coating material on the surface of the roller and excess material from the nozzle passing over the lip 4 to be collected for reuse. The bailing element may be a band 7 adjustable in tension by a roller 10, a bailing roller or an air jet. The applicator roller is driven at a lower peripheral speed than the linear velocity of the web to be coated.