baber/WOPTO huggingface dataset:
Patent GB-1067226-A (GB)
Title: Process and apparatus for controlled environment
IPC: B01D53/04
Filed: 1964-06-16
Abstract: 1,067,226. Separating gases. ESSO RESEARCH & ENGINEERING CO. June 16, 1964 [July 2, 1963; July 30, 1963; Nov. 4, 1963; Jan. 6, 1964], No. 24958/64. Heading B1L. [Also in Division F4] A heaterless adsorption system is used to provide an oxygen enriched air environment in an enclosed space by a method comprising introducing a stream of air at at least atmospheric pressure into a first bed 1 containing adsorbent selective to nitrogen, discharging an oxygen-enriched primary effluent from the bed, conveying part of the primary effluent by conduits 7 and 12 to the enclosed space, for example room (30) in Figs. 2, 3, 4 (not shown), conveying the remainder of the primary effluent by lines 22 and 8 at a pressure lower than the adsorption pressure through adsorbent bed 2 which has been previously used to adsorb nitrogen from the air and which has been partially purged by reducing the pressure in the bed, obtaining a secondary effluent from bed 2 and discharging it by lines 6, 16 and 17, and continuing cyclically and alternately operating the beds. Adsorbents for nitrogen include zeolites 5A, 13X, 10X chabazite, analeite, alumina, silica gel, charcoal, graphite and bentonite. In an alternative embodiment zeolite 4A may be used to adsorb oxygen selectively; secondary effluent is then discharged into the enclosed space. Types A and X zeolites may have from 30% to 100% of their sodium cations replaced by Ca, Mg, Sr or Ag cations. A "3¢A" sieve is prepared by replacing 9% to 11% of the sodium cations in a 4A sieve by potassium cations. The 4A sieve may be first exchanged with Sr, 30%-40% of the Sr cations are exchanged with Na, then the Na is replaced by K.
Patent GB-737086-A (GB)
Title: Improvements in pneumatic tyres and methods of making same
IPC: C08L9/00
Filed: 1951-10-25
Abstract: Plastic rubber compositions are prepared by mixing a synthetic polymer, which is compatible with hydrocarbon mineral oils, of a conjugated diolefin having not in excess of eight carbon atoms with at least 20 per cent, based on the weight of the polymer, of a compatible plasticizer, the polymer containing at least 50 per cent diolefin and having a raw "computed Mooney" plasticity of at least 85.  Specified polymers are those of butadiene, isoprene and dimethylbutadiene and their copolymers with alpha- or p-acetyl-alpha-methylstyrene, styrene, 3 : 4-dimethyl styrene, methylisopropenyl ketone, methyl vinyl ketone, methyl methacrylate, methyl acrylate and the amides of acrylic and methacrylic acids. Specified plasticizers are mineral oils, tar oils, substituted phenols such as those of cashew-nut shell oil and, less preferably, dibutyl or dioctyl phthalate, and tricresyl phosphate.  The plasticizer may be added as a disperse phase to a latex of the polymerization product, or may be incorporated therein, after coagulating, on a Banbury or similar mixer, or may be added as the polymerization product is formed from its monomers in the presence of a catalyst, e.g. an Alfin catalyst.  Carbon black may also be present, preferably in amounts of 30-35 parts per 100 of plasticizer and polymer, while an aqueous dispersion of polymer may be mixed with a liquid plasticizer and an aqueous carbon black slurry, coagulated and free liquid removed.  The polymerization may take place at below room temperature, e.g. below 50 DEG  F.  The usual vulcanization ingredients as well as natural rubber may be present in the composition which may be vulcanized.  The preferred Mooney value is 90, and even more preferred, at least 120.  U.S.A. Specification 2,457,097 is referred to.
Patent GB-183746-A (GB)
Title: Improvements in or in connection with sliding window, door and other frames
IPC: A47D7/02
Filed: 1921-09-21
Abstract: 183,746. Doughty, H. H. Sept. 21, 1921. Pivoted-sliding windows; doors.- In sliding window, bedstead, and like frames having a pin- and-slot engagement with a fixed frame, the slots 2, 3, disposed end to end, are not in line, and the slot 3 has at its upper end a turned-over part the end 4<a> of which is in line with the upper slot 2. An opening 8 is provided on the slot 3 for removing the side or window. A bolt 10 is adapted to engage the top of the slot 4 and prevent movement of the side when raised. A plate 9 is provided to take the wear on the slot 4.
Patent GB-1346744-A (GB)
Title: Betalactam compounds and process for preparing same
IPC: A61P31/04
Filed: 1972-05-26
Abstract: 1346744 Bela-lactams ELI LILLY & CO 26 May 1972 [28 May 1971] 25056/72 Heading C2C Novel antimicrobial compounds (I) and (II) where R 1  is H and R 2  is acyl or NR 1 R 2  signifies an imido group, e.g. succinimido or phthalimido, R 3  is H or a carboxy protecting group and X and Y are substituents derived from electrophilic agents, are made by reacting a 6-acylamido or -imido penicillin ester with an electrophilic reagent, especially positive halogen (I is initially formed and further reaction gives rise to II; excess reagent favours the formation of II). Compounds (III) and (IV) where R 7  is C 1  to C 5  alkyl and W is O or S are made by reacting (II) (where X is Cl or Br) with an appropriate thiol (or disulphide), carboxylic acid or thiocarboxylic acid. The following compounds are also prepared:- 6 - phthalimido - 2,2 - dimethyl - penam - 3- carboxylic acid methyl, p-nitrobenzyl and 2,2,2- trichloroethyl esters, methyl 6-(phenoxy-α,α-dimethylacetamido) - 2,2 - dimethyl - penam - 3- carboxylate, methyl 6 - (2,6 - dimethoxyphenacetamido) - 2,2 - dimethyl - penam - 3 - carbosylate and α - isopropylidene - 3 - (2 - carboxybeneamido) - 2 - isopropyl - thio - 4 - oxo - 1 - azetidine-acetic acid.
Patent GB-1041843-A (GB)
Title: An overrun clutch
Inventor: NOVIKOV VIKTOR ARONOVICH
IPC: F16D41/07
Filed: 1963-06-25
Abstract: 1,041,843. Ratchet clutches. TSENTRALNY NAUCHNO - ISSLEDOVATEL'SKY INSTITUTE KHLOPKOVOI PROMYSHLENNOSTI. Sept. 24, 1964 [June 25. 1963]. No. 25193/63. Heading F2C. Parallel sided sprags of a one-way clutch have the usual curved outer face and are formed with a flat inner face oblique to the sides, the sprags being biased into engagement by a garter spring 4.
Patent GB-1489168-A (GB)
Title: Aluminium brazing method
IPC: B23K35/28
Filed: 1976-06-17
Abstract: 1489168 Brazing WALL COLMONOY CORP 17 June 1976 [17 Oct 1975] 25198/76 Heading B3R A method of brazing members composed of aluminium or alloys of aluminium comprises applying a substantially uniform coating of metallic manganese to at least one of the surfaces to be joined in an amount sufficient to react with the aluminium oxide film on the surfaces to enable penetration of the film by a molten brazing filler metal and a wetting of the underlying base metal structure, applying a brazing filling metal to the members in the region of the surfaces to be brazed, heating the members to an elevated brazing temperature in the presence of a vacuum of at least 0À001 Torr to effect a melting and flow of the brazing filler material between the surfaces and wetting of the substrate base metal beneath the oxide film, and thereafter cooling the members. The members are preliminary cleaned by caustic pickling followed by a pickling in dilute nitric acid solution and a water rinse and drying, or by mechanical cleaning or a solvent degreasing step. The cleaned surfaces to be brazed are coated with a layer of manganese in the range 0À5 to 15 mg per square inch of joint area. The coating may be applied by electroplating, vapour deposition, or in the form of foil, but preferably by brushing, printing, rolling or spraying 8 solution of binder, such as acrylic resin, acrylic acid or polyvinyl alcohol, and manganese powder having a particle size less than 150 mesh (104 microns), and preferably less than 400 mesh (38 microns). The coated members may be placed in an aluminium box and then placed in a vacuum brazing furnace and brazing filler material applied in the region of the surfaces to be joined in the form of powder or wire held in position by binder as used for retaining the manganese powder. The members are heated in the vacuum of less than 0À001 Torr and preferably less than 0À0001 Torr to effect the brazing operation and are then cooled. The brazing filler material may comprise 12% slicon 0À3% copper, 0À8% iron, 0À2% zinc, 0À1% magnesium, 0À15% manganese and the remainder aluminium.
Patent GB-595264-A (GB)
Title: Improvements in and relating to variable-pitch screw propellers
IPC: B64C11/38
Filed: 1944-12-15
Abstract: 595,264. Hydraulic machines. ROTOL, Ltd., and FAIRHURST, L. G. Dec. 15, 1944, No. 25255. [Class 69 (ii)] [Also in Group XXXIII] A removable stop, for limiting the stroke of a piston 17 of a hydraulicallyoperated variable pitch propeller mechanism, is formed by a plate 34 with a spherical surface 37, carried by a number of toggle links 25, 28. These are urged to their strut position by springs 51, and to their extended position by separate springs. The stop is removed by actuating the solenoid 44, which turns the claw 27 of the toggle break lever to "break" the toggle strut.
Patent GB-189748-A (GB)
Title: Improvements in gear lubrication
IPC: F16N7/12
Filed: 1922-09-19
Abstract: 189,748. Bosch Akt.-Ges., R. Nov. 26, 1921, [Convention date]. Capillary-action lubricating.-A lubricating device for toothed gearing comprises a piece of absorbent material pressed against a face of one wheel, other than the working face thereof, the oil passing to the working surfaces through channels. The invention is described in connection with worm gearing a, b contained in a cylindrical casing h. A cylindrical piece of felt c is inserted in an axial recess n of one wheel a and is fed with oil by a wick d drawing its supply from a storage vessel e composed of felt discs which are secured in position in the casing h by plates f, g. The felt c is carried in a sleeve i secured to the plate f and is secured against rotation by a pin k. A spring m presses the felt c into the recess n. and oil squeezed out passes through channels o in the wheel a to the faces of the teeth. Oil thrown off is caught by the felt discs e to which fresh oil is supplied through a hole p.
Patent GB-290888-A (GB)
Title: Improvements in ham and like meat presses and cookers
IPC: A47J27/20
Filed: 1927-09-26
Abstract: 290,888. Yuill, W. M. Sept. 26, 1927. Lids.-An appliance for pressing and cooking hams &c. of the kind in which the meat is enclosed in a vessel or mould provided with a lid or cover which telescopes into or over the vessel and is held down by spring pressure, is characterized by laterally extending projections 7 on one of the telescoping parts, and coil springs 9 secured to the other part, the springs being provided with loops or eyes 10 for engagement with the projections 7. The projections 7 are preferably tubular and are integral with a bar or strap 6 secured to the cover 5, the springs 9 being attached to staples, hooks or eyes 8 secured to the vessel 4. As shown, the cover 5 fits within the vessel 4 which is provided with a strengthening band 11.
Patent GB-1516396-A (GB)
Title: Measuring the rms value of alternating current signals
IPC: G01R19/02
Filed: 1975-06-13
Abstract: 1516396 Measuring root mean square values PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 June 1975 [17 June 1974] 25369/75 Heading G1U In measuring the r.m.s. value of an input V i , this is applied to a dissipating element R 1 , whose temperature is sensed by a sensor Ti to provide a first signal to a differential amplifier 5. The amplifier output V o  is fed via diode D o (to avoid positive feedback) to a second dissipating element R 2  and sensor T2, which provides a second signal to amplifier 5. With no input V i , and T 1 , T 2  acting as a differential pair, R 6  can be adjusted to set the zero point for the output. However since V o  is substantially zero, there is no feedback and the setting is extremely sensitive and difficult. Thus for values or V o  below a predetermined threshold V s , e.g. 1% of full scale deflection, a circuit S provides a further feedback V c1 -V c2  which is linearly dependent on V o . For higher values of V o , D1 and D2 clamp the voltages at the junctions of R 7 , R 8  and R 10 , R 11  to V R . Thus by making R 8 /R 9  = R 1  1 /R 12 , V c1  will always equal V c2 , Fig. 5, and Ti, T2 act normally. Below V s , as V o  increases from zero, V c1  and V c2  increase linearly, Fig. 5, until each reaches the clamping level, V R . Thus the effective feedback V c1 -V c2  increases to a maximum and then decreases to zero at V s . Thus, for a zero input signal V i , the sensitivity of the amplifier 5 is not very large (open loop) but has a constant finite value, enabling easy adjustment of the zero point. In a second embodiment, Fig. 7 (not shown) the extra feedback is provided via an F.E.T. which is switched by a signal derived from the difference between V 0  and a reference voltage.
Patent GB-245871-A (GB)
Title: Improvements in or relating to means for facilitating the insertion of pistons in their cylinders
IPC: B25B27/12
Filed: 1924-10-25
Abstract: 245,871. Johnson, W. M., (Tarkhad, R. A.). Oct. 25, 1924. Pistons. - A tool for facilitating the insertion of a piston into its cylinder consists of a ring 4 having a bevelled bore for compressing the piston rings. The tool may be formed with a flange 4b engaging a groove in the cylinder flange and may be provided with handles 4<a>. Alternatively, the ring 4 may be secured to the cylinder by means of hooked bolts passing through lugs on the ring and engaging projections on the cylinder. A device for a multi-cylinder engine consists of two parts clamped together to form a ring for each cylinder, the rings having tapered bores for the insertion of the pistons.
Patent GB-1190956-A (GB)
Title: Apparatus for Actuating a Motion-Limiting Control Device
IPC: H01H21/28
Filed: 1967-06-01
Abstract: 1,190,956. Retractive switches. BUCHANAN ELECTRICAL PRODUCTS CORP. 1 June, 1967 [22 July, 1966], No. 25437/67. Heading H1N. Apparatus for actuating a limit switch comprises a first member 12 on which limit switch 30 is mounted, a second member 14 rotatably mounted on member 12, an actuating member 18 mounted on member 14, correcting means 16, 26 for actuating switch 30 in response to movement of member 18 and threaded means 32, 34 drivably coupling members 12 and 14 and adapted to rotate member 14 relative to member 12 and to hold member 14 in position when it has been so adjusted. As shown, members 12, 14 are housings and member 18 is an arm carrying roller 20 and mounted on shaft 16 carrying cams 22, 24 depressing cam follower 26, shaft 16 being moved longitudinally by depressing button 92 to depress plate 80 out of a groove on shaft 16 to allow shaft 16 to be moved longitudinally manually, plate 80 re-engaging a groove in shaft 16 to lock it in the selected longitudinal position when button 92 is released. Shaft 16 may be in a position such that cam 22 engages follower 26 so that clockwise rotation of arm 18 operates switch 30, or in a position such that cam 24 engages follower 26 so that counter-clockwise rotation of arm 18 operates switch 30 or in a midposition such that follower 26 is engaged by both cams 22, 24 so that switch 30 is operated by rotation of arm 18 in either direction. On release of the operating force, arm 18 retracts to the mid-position shown under the action of two parallel springs 108 bearing on a U-shaped member 100 bearing on a flat on shaft 16. Housing 14 is secured to housing 12 by a snapring 64 and can be rotated by turning with a screwdriver worm 34 engaging teeth 32, the teeth and worm apart from the screwdriver slot being covered by cover 44. Gaskets 49, 57 and sealing ring 70 provide a water, oil and dirt tight seal.
Patent GB-745264-A (GB)
Title: Improvements in writing pads
Inventor: PEARCE HOWARD REGINALD
IPC: B43L1/12
Filed: 1953-09-15
Abstract: 745,264. Writing tablet. LESWICK, Ltd. Sept. 15. 1954 [Sept. 15, 1953], No. 25501/53. Class 146(2) A writing tablet comprises a continuous band of semi-transparent paper 16 arranged above a continuous band of material covered with an adhesive layer 17 and these are separated to obliterate the writing, and mounting the bands so as to be traversed. As shown in Fig. 2, they are traversed over a manually rotated roller 1 and a roller 2 each journalled in side plates 3 of a U-shaped frame having a top-plate 5 and which is removably contained in a casing 19. The roller 2 is formed in two parts, Fig. 5, and is slidably mounted in slots 9 in the side plates. Rollers 2 are urged to tension the bands 16; 17 by a spring 11 connected to the spindle 8 of the rollers by a link 10. When it is required to place the bands 16, 17 in position in the tablet, the spring 11 is released from the position shown to the dotted line position by sliding one end of the spring 11 along a slot 13 and hooking it in a loop 14. In a modification, the bands 16, 17 instead of being traversed over rollers are guided by curved ends of the plate 5 and are moved by a gripper 35, Fig. 7, slidable in a slot. 38 in the casing 19. Obliteration may be positively effected by a metal strip 18 disposed between the bands 16 and 17, instead of relying upon the tendency cf thebands to creep relatively to one another.
Patent GB-828327-A (GB)
Title: Improvements in or relating to the location of electrical faults in insulated electric conductors
Inventor: WELLS RALPH WESTON
IPC: G01R31/08
Filed: 1956-08-21
Abstract: 828,327. Telephone instruments. BRITISH INSULATED CALLENDER'S CABLES Ltd. Aug. 20, 1957 [Aug. 21, 1956], No. 25525/56. Class 40 (4). [Also in Group XL (c)] The self-generating, low-impedance microphone used in testing for voids in an insulated electric cable (see Group XL (c)) comprises an insulated stylus 5 soldered to magnetic diaphragm 4, a coil 8 on soft iron magnet 2 and a plastic dust cover 6 secured to housing 3; the whole is mounted on wooden handle 7.
Patent GB-805229-A (GB)
Title: Improvements in thermionic cathodes and in nickel alloys therefor
IPC: H01J1/14
Filed: 1956-08-21
Abstract: The core of a directly or indirectly heated cathode is made of an alloy of the composition in per cent by weight: Ni at least 98.0, Mn 0.2-2.0.  Si, Al and Mg may be present as impurities up to 0.25 in total.
Patent GB-789833-A (GB)
Title: Cocking device for photographic between-the-lens pivoted blade shutter
Inventor: HAHN WERNER
IPC: G03B9/08
Filed: 1955-09-08
Abstract: 789,833. Photographic shutters. VEB ZEISS IKON DRESDEN. Sept. 8, 1955, No. 25729/55. Class 98(1) A between-lens pivoted blade shutter comprises a housing a main cocking member rotatably mounted therein and having an actuating handle, and spring-urged members which, on actuation of the main cocking member, are moved into cocked position, the handle being pivoted on the main cocking member and having at least one lug which, on actuation of the main cocking member, engages a projection on one such further member. As shown, the master ring 1 carries a setting handle 4 pivoted at 12 and movable between stops 5 and 6 on the ring 1, a spring 13 normally holding the handle 4 against the stop 5 so that it is disengaged from an auxiliary ring 2 which also is to be set. When the shutter is to be set, the handle .4 is swung over against the stop 6 and in this position the lug 9 lies behind the pin 8 on the member 2, so that continued clockwise movement of the handle 4 effects setting movement both of the ring 1 and of the ring 2, e.g. against the action of springs, until they are held in their set position by latches. In a modification, two auxiliary rings may be 'so set, and one of such rings may be the blade ring and the other may drive an escapement or a spring- urged diaphragm.
Patent GB-425618-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q1/442
Filed: 1933-09-19
Abstract: 425,618. Automatic exchange systems. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, and BEALE, C. E., 59, Towers Road, Wavertree, both in Liverpool. Sept. 19, 1933, No. 25892. [Class 40 (iv)] A repeater terminating a junction over which A.C. impulsing is employed is disconnected from the incoming selector during each train of impulses by a relay which operates as soon as an armature of the impulse relay leaves its back contact. The preliminary impulse when the junction 10, 11 is seized is repeated by the coil RPC and operates impulse relay AO. Relays A, B, pull up, the latter locking in series with DX. At the end of the impulse AO, A restore and relay I energizes in series with the line relay of the incoming selector. Successive impulse trains are now repeated forward by AO, A, and relay C is operative during each train, a short-circuit being removed therefrom at the first impulse, in order to disconnect the repeater from the selector and to improve the impulsing circuit by shunting I, D. Operation of shunt-field relay D upon the reply of the called party connects up E which transmits an A.C. impulse over the junction until it is released by a slow-tooperate relay DR. The called party may release D intermittently by flicking his switchhook to recall the operator. On release of D, a fresh circuit is made for E in series with ER, and an A.C. impulse is sent pending the relapse of DR, while on the reoperation of D, E energizes as before to restart the cycle, thus regular impulses are transmitted over the junction. When the called party hangs up, an impulse is sent as described above, while when the operator clears, a clearing impulse operates AO, A, C, so that release relay B is short-circuited.
Patent GB-443970-A (GB)
Title: An improved method of preserving sterile suture material for medicinal purposes ready for use
IPC: A61L17/00
Filed: 1934-09-10
Abstract: Sterile suture materials are preserved ready for use by embedding the material in a semi-soft unctuous mass.  The embedding material may be a liquid, such as benzine, alcohol or chloroform, with or without added disinfectant, which has been solidified by addition of resinic acid or fatty acid and a base, or may be an unctuous mixture containing wax or paraffin. Containers of glass or metal and of any form may be used and may comprise a disc with a fine hole through which the suture thread is drawn.  The Specification as open to inspection under Sect. 91 refers also to semi-solid masses containing petroleum jelly, or tragacanth, and states that the containers may have gripping and wiping devices for the suture material consisting of a cone of wires, or of resilient membranes provided in the closure member and having openings bearing tightly against the thread and with or without a layer of absorbent such as kieselguhr between the membranes.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1275134-A (GB)
Title: Flexible material tracking system
IPC: B65G43/02
Filed: 1969-05-21
Abstract: 1275134 Rollers RANK XEROX Ltd 21 May 1969 [24 May 1968] 26004/69 Heading F2U [Also in Divisions B8 and G2] Misalignment of an endless photoconductive belt 12 with respect to rollers 45, 46, 47 is automatically corrected by rocking roller 46 (see Division G2). Roller 46 preferably has a rubber coating.
Patent GB-1509927-A (GB)
Title: Course compensation apparatus for use with a self-propelled underwater device
IPC: B63G8/42
Filed: 1975-06-18
Abstract: 1509927 Automatic steering FRANCE ARMED FORCES MINISTER OF 18 June 1975 [1 Aug 1974] 26042/75 Heading B7V A self-propelled underwater device 1 has course-compensation apparatus 3 mounted at its rear end and a cable 2 connects the device to a control base. The apparatus comprises pivots 6 supported in arms 7a, 7b formed at the rear end of the device, and rings 5a, 5b supported on the pivots and mounting propellers 4a, 4b for universal movement of their axis 10 relative to the device. Control means are provided which respond to monitor means monitoring forces applied to the device by the apparatus and control the position of the axis 10 so that the propellers generate a compensatory force.