baber/WOPTO huggingface dataset:
Patent GB-1495107-A (GB)
Title: Tape transport apparatus
IPC: G11B15/58
Filed: 1976-03-04
Abstract: 1495107 Automatic control of tape loops NCR CORP and CONTROL DATA CORP 4 March 1976 [13 March 1975] 08684/76 Heading G3R  The size of a buffer loop in a bi-directional tape transport system is kept constant by adjustment of the reel speed in response to measurements of the tape velocity on either side of the loop, the two velocity signals being combined to provide a loop position signal which is then further combined with the signal for the velocity on the reel side of the loop to control the reel drive motor. The system is applied to buffers on each side of a capstan drive 106; the following description pertains to the left hand side. Optical disc tachometers 126, 136 provide the two velocity signals, with associated logic circuits 124, 140 and 138 converting the outputs into pulse trains whose frequency represents speed on lines 155, 157 and 164, 160 respectively according to direction. A "digital integrator" (an up/down counter) 152 integrates the difference between the tachometer pulses and converts the result to analogue form which is combined at 145 with the output of a D/A converter 168 which operates on the pulses from tachometer 126. The output of 168 is said to be a "velocity analogue correction voltage". The combined signals are amplified at 146 to drive reel motor 144. The capstan is driven by a motor 114 controlled at 116 in response to external signals 117. A source 118 maintains a partial vacuum in buffer stores 108, 110. The system elements are described. In an alternative embodiment Fig. 7 (not shown) the system is backed up by pressure operated loop position sensors in the buffer stores. Three sensors, at top, middle and bottom may be used in any combination.
Patent GB-1094991-A (GB)
Title: Improvements in or relating to hydroxy alkyl di-esters of dialkanolamino-alkyl-phosphonic acid
Inventor: DYKE RAYMOND
IPC: C08G18/38
Filed: 1965-03-01
Abstract: Flame retarded polyurethane foams are formed by reacting a dihydroxy alkylene or di(hydroxy-oxyalkylene) dialkanolamino-alkyl phosphonate of the general formula <FORM:1094991/C3/1> where R1 and R2 are alkylene or oxyalkylene radicals, R4 and R5 are alkylene radicals, and R3 is methylene or substituted methylene containing up to 4 carbon atoms alone or in conjunction with known hydroxyl-containing polyethers, with an isocyanate, preferably a toluene di-isocyanate. The process may be carried out in the presence of a tin catalyst, an amine catalyst and, when desired, a blowing agent and foam stabilizing agent. Non-combining additives containing halogen and phosphorus, and aliphatic halogenated alcohols may also be present.ALSO:Novel dihydroxyalkylene or di-(hydroxyoxyalkylene) dialkanolamino-alkyl phosphonates of the general formula <FORM:1094991/C2/1> where R1 and R2 are alkylene or oxyalkylene radicals, R4 and R5 are alkylene, and R3 is methylene or substituted methylene containing up to 4 carbon atoms are prepared by reacting a dialkanolamine HN(R4OH)(R5OH), a carbonyl compound R3=O and an appropriate dihydroxyalkylene or di - (hydroxy - oxyalkylene) phosphite in a Mannich type reaction.  The compounds are used alone or in conjunction with hydroxyl-containing polyethers in the preparation of polyurethane foams, and give improved flame resistance.  The phosphite starting materials may be prepared by an ester interchange reaction between a dialkyl or diaryl phosphite and a glycol of molecular weight between 62 and 400, or by reacting an alkylene oxide or a mixture of alkylene oxides with phosphorous acid.
Patent GB-792964-A (GB)
Title: An apparatus for drawing-off and discharging hosiery in straight-bar knitting machines
IPC: D04B15/88
Filed: 1955-03-25
Abstract: 792,964. Straight-bar knitting-machines. ZAPADOMORAVSKE STROJIRNY NARODNI PODNIK. March 25, 1955 [March 31, 1954], No. 8759/55. Class 74 (2). The driven roller 1 of a pair of coacting fabric draw-off rollers is provided with circumferential grooves to receive the rolled-up selvedges of a stocking blank. Flanking a central smooth cylindrical portion 5 of the roller, are oppositely handed selvedgeaccommodating grooves 4, each in turn flanked by a selvedge-receiving groove 9 and exit groove 10. The coacting smooth cylindrical roller 2 is carried on supports 25 which can be rocked about a shaft 27 by the forked end of a member 30. When the rollers are to be separated, the member 30 engages directly with a rod 26 projecting from one of the members 25 and, when they are to be brought together, engages it through a spring 29. The roller 1 is driven by pawl and ratchet means, not shown. Two endless draw-off straps 14, driven by wheels 12 at the ends of roller 1, bear hooks 20 to engage a welt rod. The position of the roller 2 is controlled by a cam disc 48 moved, as required, by the main-shaft of the machine. When a cam follower 47 rests in either of recesses 50, 51, the roller 2 is swung away from the roller 1, through links 41, 40, 38; and the hooked end of a lever 37 is brought into the path of dogs 36, 35 carried on a belt 33 which accompanies one of the belts 14. The take-off roller 1 is therefore arrested as soon as the dog concerned engages the lever 37. The first arrest, by the dog 36, occurs just after discharge of a stocking blank 6 into a receptacle 53, and is by reason of the recess 50, the hooks 20 being then positioned to engage a welt rod 21 dropped from a magazine 22 on,to a new blank 60, in front of the hooks 20. The disc 48 is now rotated to bring the follower 47 on to a lobe 52 the height of which, whilst sufficient to cause the hook 37 to release the dog 36, is not sufficient to close the rollers 1, 2. The welt rod is now seized by the hooks 20 and moved towards the draw-off rollers. A second rotation of the cam disc causes the follower 47 to drop into the recess 51 and brings the lever 37 into the path of the second dog 35, which reaches it, to stop the machine, when the welt rod has passed over the roller 1 and the rolled-up selvedges have come to lie in the grooves 9. Draw-off now continues, for a short while, under the weight of the welt rod, as it leaves the hooks 20 and descends into the receptacle 53. A further rotation of the cam disc then brings the follower on to the full radius portion of the cam disc and the shaft 27 is rocked sufficiently to cause release of the dog 35 and closure of the rollers 1, 2, which thereafter rotate, to draw off the blank.
Patent GB-309538-A (GB)
Title: Light metal alloy
IPC: C22C21/12
Filed: 1929-03-18
Abstract: 309,538. Weiss, J. April 12, 1928. [Convention date]. Alloys.-A light alloy suitable for internalcombustion engine pistons consists of aluminium with 12-18 per cent of copper, 0.1-5 per cent of magnesium, and 0.1-5 per cent of nickel, with or without 0.05-8 per cent of iron.
Patent GB-1517126-A (GB)
Title: Mixing apparatus
IPC: B22C5/04
Filed: 1977-03-02
Abstract: 1517126 Mixing moulding sand TAIYO CHUKI CO Ltd 2 March 1977 8820/77 Heading B1C Mixing apparatus for the preparation of moulding sand comprises a sand storage container 1', a mixing vessel 4 having a mechanical stirrer 5, a sand measurement bin 1" situated between the storage container and the mixing vessel and means in the form of fluid actuated dampers 15, 16 for controlling the supply of sand from the container 1' to the bin 1" and from the bin to the mixing vessel 4. Hardening agent is supplied from a reservoir 6 through a measuring cylinder 7 to the mixing vessel and an additives container 2 has feed means in the form of a screw 3 to supply additives to the mixing vessel. Time control means is provided for effecting a sequential supply of constituents and -operation of theapparatus commencing with initiating an initial supply and mixing of sand only in the mixing vessel to clean the vessel interior from the residue of a preceding charge and then effecting the sequential supply of additive and hardening agent and the final mixing thereof with the sand. The moulding sand mixture is finally discharged from the mixing vessel on to conveying means 19.
Patent GB-118648-A (GB)
Title: Improvements in and relating to Squeegee and like Scraping and Brushing Machines for Roads and like Surfaces.
Inventor: HINES JOHN
IPC: E01H1/10
Filed: 1917-09-21
Abstract: 118,648. Hines, J. Sept. 21, 1017. Scraping-machines; sweeping-machines; surface treatment with liquid materials. - Relates to squeegee and like scraping and brushing machines for road surfaces in which the squeegee or like elements are pressed against the road by springs and mounted so that their angular positions may be adjusted as desired. According to the invention, the spindle c of each element b is mounted in a slotted sleeve e and provided with holes at various angular positions for the engagement of a screw pin h working in the slot g in the sleeve, a spring d around the sleeve bearing against the collar f on the spindle. The machine may be employed in conjunction with the tar-spreading apparatus described in Specification 107,027.
Patent GB-1188322-A (GB)
Title: Process for preparing Non-Woven Fibrous Products from Gel Fibers
Inventor: SPENCE THOMAS CECIL
IPC: D04H3/007
Filed: 1967-02-24
Abstract: 1,188,322. Papermaking, non woven fabric. DOW CHEMICAL CO. 24 Feb., 1967, No. 8962/67. Headings D1R, D2A and D2B. A web of non-fibrillated gel fibres of a thermoplastic fibre-forming polymer of acrylonitrile is self-bonded by subjecting it to pressure at a temperature of less than 120‹C for a time not long enough to fuse dry fibres of the polymer, but long enough to produce a web having a wet tensile strength requiring at least 0.45 grams of force per gram per square metre basis weight to break a strip 2.54 cm wide. By "gel fibre" is meant a fibre having a three-dimensional network of interconnected fibrils of polymeric material and voids, the voids being filled by a liquid. This liquid may result from spinning the fibre from -solution and coagulating in a bath, or be liquid from a wash bath used to replace an organic solvent after spinning. The gel fibres may be of homopolymers of acrylonitrile, or of copolymers with up to 20% of allyl alcohol, vinyl acetate, acrylamide, methacrylamide, vinylpyridine, ethylene-sulphonic acid or its alkalimetal salts, -vinyl-benzene-sulphonic acid or its salts, 2-sulphoethyl methacrylate or its salts, vinyl-caprolactam, vinyl-pyrrolidine or mixtures of these, and may be blended with up to 90% of other fibres, e.g. of nylon, polyester, polyolefine, cellulose or collapsed polyacrylonitrile The gel fibres may be toughened before sheet-formation by subjecting them while free of restraint to a hot aqueous medium, but they must then be cooled before subjecting them to stress. The web may be formed by a scattering mechanism, distribution by a stream of air or water, or deposition by filtering from a liquid. Staple fibres are preferably formed into a web by papermaking technique, continuous filaments also from suspension in water. The rate of drainage of aqueous slurries may be controlled by the process of Specification 1,188,323. The. bonding pressure may be applied uniformly over the whole web, or as a pattern of spaced heated pressure points spaced apart by a distance not greater than the staple length of the fibres. The patterned pressure means may be rolls, plates or a combination of rolls or plates with screens. The bonded web may be heated in an aqueous medium that will not extract water from the gel fibres to partially shrink it, before drying to irreversibly collapse the gel fibres. The bonded fabric may be dried while completely relaxed, e.g. in a hot air oven, particularly after pattern bonding, or by the process of Specification 1,188,325 or that of Specification 1,188,324. The dried web may subsequently be annealed at a temperature at least 30‹C above the glass-transition temperature of the fibres. The bonded web may be impregnated with resinous solids of a chemical composition different from that of the gel fibres. Binders referred to are latices of butadiene/acrylonitrile polymer, polyacrylates, polymethacrylates, and acrylic acid polymers. They may be applied before or after the web has been dried to collapse the gel fibres.
Patent GB-163867-A (GB)
Title: Automatic catch for securing motor van doors, or swing doors and the like in open position
IPC: E05C3/14
Filed: 1920-03-27
Abstract: 163,867. Williams, L. S. March 27, 1920- Catches, gravity. - An automatic catch or holder for securing motor-van and other swing doors open comprises a bell-crank lever C with hook nose pivoted and wholly arranged within a bracket A fixed to the side of the van and adapted to engage a lip on a wedge-shaped bracket B fixed to the door in position to enter the open end of the bracket A. The lever C which projects through the side of its supporting-bracket is released by hand.
Patent GB-110342-A (GB)
Title: Improvements in Toy Building Blocks.
IPC: A63H33/08
Filed: 1917-06-25
Abstract: 110,342. Tellenbach et Cie. Oct. 11, 1916, [Convention date]. Building - block - Toy building-blocks are formed with rectangular recesses near the ends and adapted to interlock when making structures, &c. Figs. 1, 2, and 5 show various forms of blocks a, f , i and n, and Fig. 8 shows an example of the way in which they may be connected. Each block has at least two recesses arranged opposite to one another at one or both ends.
Patent GB-239450-A (GB)
Title: Improvements relating to crystal holders of wireless receiving apparatus
IPC: H01L29/00
Filed: 1925-04-06
Abstract: 239,450. Barber, J. W., and Brownie Wireless Co. of Great Britain, Ltd. April 6, 1925. Crystal detectors. - A spring clip is adapted to grip the crystal c between the concave or pierced ends 2 of two arms 1. Tongues or projections 4, 5 at the base fit resiliently into a cup or socket on the base of the receiving set. The holder may be pressed up from a sheet-metal blank of the form shown in Fig. 3, or it may be made from a single piece of wire bent to shape. A protective glass tube may be fitted over the prongs 4, 5.
Patent GB-1468634-A (GB)
Title: Thin film magnetic heads
IPC: G11B5/31
Filed: 1975-03-05
Abstract: 1468634 Magnetic heads COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 5 March 1975 [11 March 1974] 9207/75 Heading G5R A thin-film magnetic head for recording on a magnetic medium moving parallel to the frontal plane of the head comprises a pair of magnetic pole-piece layers 1, 2 having ends defining an air gap in the frontal plane, an electrical winding 3 located between these ends, and a thin highpermeability magnetic layer 4 parallel to and magnetically decoupled from the outer lateral face of the downstream pole-piece layer 2. As shown, the magnetic layer 4 is separated from the pole-piece layer 2 by a non-magnetic layer 5 and may be split, Fig. 5, into a plurality of spaced thinner layers.
Patent GB-649938-A (GB)
Title: Improvements in or relating to couplers
IPC: B61G3/04
Filed: 1948-04-01
Abstract: 649,938. Railway vehicle couplings. STEVENS, A. H. (American Steel Foundries). April 1, 1948, No. 9225. [Class 103(v)] A coupling comprises a knuckle and a lock 16, means for transmitting operative movement to said knuckle through said lock comprising a rotor 24. mounted on the bottom wall 28 of said coupler, a rotor lever 20 having a jaw end engaging a flattened portion of said rotor to rotate therewith and having limited slidable movement thereon, and link or toggle 10 pivotally connected at 18 to the opposite end of said lever and engaging said lock, said jaw end and said bottom wall having interlocking means adapted to engage each other against accidental unlocking movement when said rotor is in locked position and said coupler is subjected to jolts tending to unlock the lock. The interlocking means are complementary shoulders 30, 34 and said jaw end has cylindrical portions 48, 32 forward and aft of the shoulders thereon for complementary engagement with a cylindrical portion 36 on the said bottom wall. The toggle 10 has a trunnion-like portion 12 slidable in a slot 14 of the lock and a ledge 8 for coaction with an anticreep lug 4. Specification 349,373 is referred to.
Patent GB-280426-A (GB)
Title: Improvements in differential pressure controllers
IPC: F24D19/10
Filed: 1927-04-04
Abstract: 280,426. Marks, E. C. R., (Dunham Co., Ltd., C. A.). April 4,1927. Mercury switches; pneumatic actuation; springs; arrangement and disposition of.-A differential pressure controller operable for example to control the pressures in the supply and return mains of a vacuum steam heating system by starting and stopping the vacuum pump producing the circulation, comprises a pair of connected diaphragms &c. 15, Fig. 1, forming chambers 12, 13 in a casing, which are open to the high and low vacua, while the diaphragm 15 is externally subject to atmospheric pressure. The resultant motion of the diaphragm is communicated to a lever 46 operating a mercury switch, Fig. 2, comprising a pair of contacts 52, 53 sealed into a tube containing a mercury globule. The tube is carried bv the lever, and a snap movement is given to the lever by a spring 57. Th diaphragm chambers 12, 13 are connected to the high and low vacua through pipes 7, 6, a three-way valve 64 being interposed so that the pipe 6 may be cut off and the pipe 7 connected to both chambers, the device then acting as a single diaphragm controller. The diaphragm motion is transmitted through a bellcrank lever.
Patent GB-200160-A (GB)
Title: Improvements in the manufacture of cellulose derivatives and fibrous products
IPC: C08B3/00
Filed: 1922-03-31
Abstract: In the preparation of cellulose esters, cellulose is treated with a gaseous acylating agent in conjunction with a gaseous catalyst, in particular, with the vapour of acetic anhydride in the presence of hydrochloric acid gas, or sulphur dioxide, or according to the Provisional Specification, sulphur trioxide. The anhydride vapour, which may be mixed with air, carbon dioxide, &c., is passed through the cellulose material which may be stationary or continuously agitated, and when the acetylation is completed, steam, if desired with the addition of small quantities of ammonia, is blown through the mass until all acid is removed. Mixed esters may be prepared, for example, the cellulose may be treated with a mixture of the vapours of acetic and formic or propionic acids and the catalyst. Specification 25893/11 is referred to.  By suitable adjustment, the fibres may be only superficially acetylated, in which case the products are valuable as substitutes for wool and hair.
Patent GB-626242-A (GB)
Title: Improvements relating to road surface markers for guiding vehicular traffic
IPC: E01F9/06
Filed: 1947-04-08
Abstract: 626,242. Road-surface markings. SHAW, P. April 8, 1947, No. 9281. [Class 3(ii)] A road-surface marker comprises a block having a hollow undersurface and a central projection B which mounts under overhanging projections B<SP>1</SP> at least two reflectors C, the projection B rising from a floor D which is approximately level with the road surface and separated from front and rear ramps F by a passage H extending completely round it and which is shaped so as to direct air disturbances produced by vehicle wheels on to the reflectors C to give a cleaning effect, and so that any mud in the passage will also be dislodged by the wheels; each ramp F is formed with a gap G extending approximately to the level of the floor D through which the reflectors C can be seen, the top of each ramp being substantially level with the central projector B and curving from the floor D. The ramps F are hollowed out underneath and the projection B may be similarly hollowed if desired. The block has keying projections K for fixing it to the road. The central projection may be a separate detachable part and the block may be rectangular, round or of other shape.
Patent GB-472501-A (GB)
Title: Improvements in non-skid tread devices for vehicle wheels
IPC: B60C11/18
Filed: 1936-03-30
Abstract: 472,501. Wheel tyres. GRAY, B. P. March 30, 1936, Nos. 9309 and 18717. [Class 144 (ii)] Non-skid tread-plates of the kind described in Specifications 443,427, 457,464, 457,533, and 465,784 are now constructed so as to permit relative movement of the ground-engaging portions 11. In the form shown in Fig. 1, the base 14 of the plate is formed of relatively thin resilient metal or other material. The end portions may be separately formed and welded &c. to the base. Or, as shown in Fig. 4, they may be secured by lugs 16 on the base. Figs. 7 and 8 show further modifications in which the base 14, not necessarily of a resilient nature, is provided with weakened portions 20, 19 respectively across which the plate is severed before or during use. Specification 469,727 also is referred to.
Patent GB-781253-A (GB)
Title: Device for packaging shirts and the like in bags
IPC: B65B67/04
Filed: 1956-03-26
Abstract: 781,253. Packaging apparatus. KOHL, W. R. March 26, 1956, No. 9311/56. Class 94(1). A device to facilitate the packaging into bags of bundles of articles such as shirts comprises a bedplate 11 having upstanding guide plates-13, 17, the plate 13 being fixed and the plate 17 pivoted about a vertical member 18 so that it may be swung towards the plate 13. The plate 17 is spring biassed into parallel relationship with the plate 13, and is held in its inward position by the extremity of a latch 22 engaging an arm 19 secured to the member 18 while a bag is passed over the plates. The latch is then operated to release the plate 17 which swings outwardly to open up the bag. Shirts stacked on the bedplate between the plate 13 and a guide member 16 are pushed forward into the bag and may be advanced further to strip it from the plates. Slots 14 permit various sized bags B, B<SP>1</SP> to be operated on.
Patent GB-790455-A (GB)
Title: Improvements in or relating to expander tools
IPC: E21B29/10
Filed: 1956-03-26
Abstract: 790,455. Tube expanders; sizing and restoring shapes of pipes. LAVAL, C. March 26, 1956, No. 9364/56. Class 83 (4). A tube expander for restoring to shape collapsed portions of oil well pipe comprises means on a housing laterally expansible therefrom to engage the pipe, hydraulic means enclosed within the housing to expand the expansible means and including a pump for the hydraulic fluid driven by an electric motor which can be actuated by means remote from the housing. A tube expander 16 is supported by a cable 14 within an oil well casing 10. The expander housing includes a snap-on top member 24 and an upper section 22 screwed to a boss 26 on a lower section 20. A flat plate 30 supported on the boss 26 carries a hydraulic fluid reservoir 36, an electric motor 38, speed-reducing means 40, a pump 42 for the hydraulic fluid, and an electrically-operated fluid control valve 44. The lower section 20 carries pivoted thereto at 50 expander segments 48 formed with ribs 217. The upper housing section 22 is filled with dielectric fluid to resist external pressures. In operation, a switch 234, at the surface of the well and in supply wires 70 which extend with the cable 14, is closed. This energizes the motor 38 and a solenoid 110 to move a member 102 of the valve 44 against a spring 99 to close an outlet 104 of the valve. Through linkage 78, 80, 82 a piston member 86 of the pump 42 is reciprocated by the motor 38 to force fluid from the reservoir 36 and a reservoir 94 in the pump through a conduit 98 to a chamber 96 in the valve 44. The outlet 104 thereof being closed, fluid passes from the chamber 96 through a conduit 108 to a space above a piston 52, a partially filled gas bag 116 in the reservoir 36 expanding to replace removed fluid. The piston 52 is thus moved down, against a spring 210 to move a further piston 58 loosely linked thereto. The piston 58 moves a rod 56 and head 57 thereon to cause links 224 to expand the segments 48 against springs 220 and 218. To collapse the arms 48, the switch 234 is opened to stop the motor 38 and allow the valve member 102 to move to the position shown in Fig. 3. Thus as the piston 52 is moved up by its spring 210 fluid is forced through the conduit 108, chamber 96, conduit 106, reservoir 94 and conduit 114 to the reservoir 36.