baber/WOPTO huggingface dataset:
Patent GB-404349-A (GB)
Title: Improvements in or relating to frequency selective circuit arrangements for use in radio reception
IPC: H04B1/16
Filed: 1932-07-14
Abstract: 404,349. Impedance networks; valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and RUST, N. M., 109, London Road, Chelinsford. July 14, 1932, Nos. 19968 and 29752. [Classes 40 (iii) and 40 (v).] In a band-pass circuit of the fixed tuned or variably tunable type one or more branched circuits are provided, each branch comprising inductance in series with capacity and being associated with negative resistance means to reduce the effective damping. In an alternative arrangement complex resonant circuits in cascade are employed. Fig. 4 (Prov. 19968 /32) shows a pair of branched circuits L1 C1, L2 C2 with associated negative resistance devices consisting of dynatron connected screen-grid valves VI. Such a branch circuit may be connected in parallel with a tuned input or intervalve circuit matching being effected by a tapping to the inductance or between two series condensers. Fig. 4 (Prov. 29752/32) shows a cascade arrangement of complex circuits A, B, coupled by an amplifying valve V3, and each associated with dynatron connected screen-grid valves V1, V2. These circuits are ganged to have a constant frequency separation and each gives a sharp cut-off on one side of the resonant frequency the overall response being shown in Fig. 3 (Prov. 29752/32). Fig. 6 shows a superheterodyne receiver in which the coupling 1b, 2b, 3b is arranged between the first detector 10 and the intermediate frequency amplifier 12. The auxiliary condensers k1, k2 are mechanically coupled so that one is maximum when the other is minimum and serve to vary the band width. Second channel interference can be removed by the use of a coupling in which the minimum response is removed from the resonance frequency by twice the intermediate frequency used. Fig. 7 shows complex cascade connected circuits A, B, tapped across part of the tuned circuits 1b and by adjustment of the tapping the isolating valve V3 may be dispensed with.
Patent GB-571375-A (GB)
Title: Process to provide materials or articles with printings or the like by the way of transfer
IPC: B44C3/04
Filed: 1943-11-30
Abstract: 571,375. Transferring designs. RADO, L. Nov. 30, 1943, No. 19976. [Class 100 (ii)] Prints, drawings, paintings, &c. are transferred from a fibrous bearer, such as paper, to a surface of cardboard, wood, metal, glass, &c., by sticking the design-bearing side of the bearer to the surface by means of a non-watersoluble adhesive, whereby the surface fibres of the bearer become embedded in the adhesive and remain attached to the transferred design when the main body of the bearer is moistened and removed. These remaining fibres may be rendered transparent by treatment with oil or a lacquer. The adhesive may be transparent or opaque and may be applied to the transfer or to the surface. Cellulose base lacquers may be employed. The adhesive may be thermoplastic in which case it may be allowed to dry on the transfer or on the surface, or on both, before the transfer is applied, the transfer being effected by heat and pressure. Specification 485,260 and U.S.A. Specification 2,073,387 are referred to.
Patent GB-875253-A (GB)
Title: Linear accelerator
IPC: H05H9/02
Filed: 1960-06-07
Abstract: 875,253. Waveguide resonators. VARIAN ASSOCIATES. June 7, 1960 [June 5, 1959], No. 19983/60. Class 40(8) [Also in Group XL(a) ] A test cavity resonator for determining the parameters of a disc-loaded linear accelerator waveguide (see Group XL(a) ) consists of two discs 45, 46 sandwiched between three spacer rings 47, 48 and 49, the entire assembly being clamped between flat-end plates 49. A coupling loop is shown at 51. Resonance wavelengths are measured for successively larger diameters 2b of the spacer discs and successively smaller disc spacings d. The attenuation and field strength on the axis is computed for each of the series of cavities.
Patent GB-278840-A (GB)
Title: Improvements relating to automatic and semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1926-08-13
Abstract: 278,840. Siemens Bros. & Co., Ltd., and Long, D. P. Aug. 13, 1926. Automatic exchange systems.-In a system in which ringing current is supplied from the connector, ringing is prevented on calls to certain lines by means of a disabling circuit over an additional wiper. This may be necessary in the case of a private branch exchange line or a party line. The extra wiper and bank may take the form described in Specification 203,759, in which holes are provided in the bank for the reception of earthed screws. The application of the invention to a connector of ordinary type is described. If the wanted line is idle, test relay T energizes after relay D and before relay G falls back and disconnects line relay A, which in relapsing removes a short-circuit from ringing relay S at contact a3. Relay S energizes and connects up ringing current over ring trip relay TR. which operates when the called subscriber replies, and short-circuits relay S. If, however, the line is one to which ringing current is not to be transmitted, wiper D<1> engages an earthed screw in its bank, and ringing relav S remains short-circuited thereover after line relay A falls back. If the wanted line is busy, relay TR energizes oil the relapse of relay G, connecting up the busy signal and maintaining the short-circuit across relay S. In the case of a rotary connector of the kind described in Specification 203,759 in which all lines of a P.B.X. group except the last are marked by an earthed screw engaging an extra wiper, the same screws serve both the extra wipers, but for the last line, the screw is cut away so that the wiper concerned with hunting does not make contact with it.
Patent GB-842737-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D43/02
Filed: 1957-06-25
Abstract: 842,737. Lawn-mowers. BREW, L. M. June 20, 1958 [June 25, 1957], No. 20043/57. Class 6(2). A bar 2 provided with one or more rows of tines 4, or with brush bristles, is pivotally mounted between the side plates 5 of a lawnmower 1, being situated in front of the cutting cylinder 3 for the purpose of combing the growth to be cut before the latter is presented to the cutters. The bar 2 is mounted in the forward ends of arms 7A of L-shaped brackets 7 pivoted at 8 to the sideplates of the mower, the extremities of the arms 7B of the brackets being provided with bolts 9 engaging in slots 10 in the side plates. Locking nuts are provided on the outer ends of the bolts 9, and by loosening the nuts the brackets may be pivoted about the pivots 8 to adjust the vertical position of the bar 2. Collars 12, rotatably mounted at each end of the bar 2, are provided with lugs 13 connected by means of coil springs 14 to the bolts 9, and by turning the collars relative to the bar and locking them in the desired position by means of the grub screws 15, the pressure exerted by the tines 4 on the ground may be varied. Front rollers 6 may be provided to take part of the weight of the machine and may be mounted on extensions of the bar 2 as shown in Fig. 1, on the inner sides of the sideplates, or they may be carried in front of the tines.
Patent GB-299516-A (GB)
Title: A further improvement in the construction of reinforced concrete posts
IPC: E04H12/22
Filed: 1927-07-29
Abstract: 299,516. Hull, H. A. July 29, 1927. Addition to 270,405. Concrete posts. - Relates to the reinforced concrete post described in the parent Specification, and consists in using a metal tube g as a distance-piece to keep the reinforcing wires e in their proper positions in the shank b of the post, and to form an additional reinforcement. Holes h are formed in the tube to allow keys to be formed between the concrete in its interior and that on the exterior. Rods may also be inserted in the holes to anchor the tube in the concrete.
Patent GB-952016-A (GB)
Title: Improvements in collapsible cartons and method of making the same
Inventor: BRINE ERNEST JAMES
IPC: B65D5/36
Filed: 1962-05-25
Abstract: 952,016. Collapsible cartons. PURNELL & SONS Ltd. Jan. 25, 1963 [May 25, 1962], No. 20160/62. Heading B8P. In a collapsible carton blank having a base panel 1 from which extend side wall panels 2 with extensions 4 and end wall panels 3 with extensions 7 and 10, the walls being joined by a diagonally creased gusset web 11, a tongue 13 is cut in the gusset web extending from each diagonal crease line 12 towards the adjacent side wall. Glue is applied in an unbroken straight line 14a no wider than the width of the tongue along the side walls, tongue, and part of the gusset web from which the tongue extends. To form the carton the extensions 4 are folded to adhere to the inside of side walls 2 and the resulting double thickness folded about crease line 6 so that the coated portion of the gusset adheres to the end wall 3. The side and end walls are then erected and the extension 7 folded down to enclose the gusset, the extension 10 lying on the base panel.
Patent GB-1343703-A (GB)
Title: Method of chemically coupling biologically active substances to oxirane-containing polymers
IPC: C12N11/10
Filed: 1971-04-19
Abstract: 1343703 Chemically coupling proteins &c. to polyacrylamide or polysaccharides EXPLOATERINGS AB TBF 19 April 1971 [23 Jan 1970] 20182/71 Headings C3H C3P and C3U A method of chemically coupling an amino acid, peptide, protein, plasma protein or nucleotide to a water-insoluble polysaccharide (agar, cellulose, dextran or cross-linked dextran) or polyacrylamide involves reacting a waterinsoluble hydrophilic oxirane group-containing form of the polysaccharide or polyacrylamide with a solution of the amino acid &c. under conditions which at least partially retain the biological activity of the amino acid &c. in the coupled product. According to the Examples (1) agarose is activated with epichlorohydrin, and soyabean-trypsin-inhibitor or trypsin is coupled to the activated agarose, (2) and (3) the coupled product is used to purify trypsin and soyabean-trypsin-inhibitor, respectively, by adsorption and elution. Examples 4, 5 and 6 are broadly similar except that the polymer is obtained by activating the tosyl ester of cellulose with sodium methylate, agarose with epibromohydrin and cross-linked polyacrylamide with bis-epoxide, respectively.
Patent GB-628073-A (GB)
Title: Separation of cashew nut shell liquid and cashew kernel oil from cashew nuts
IPC: C09F5/06
Filed: 1947-07-28
Abstract: Cashew nut shell liquid and cashew kernel oil are separated from the whole nuts by subjecting the comminuted cashew nuts to extraction with a specific solvent for either the shell liquid or the kernel oil.  The selective solvents specified for the cashew nut shell liquid comprise methyl alcohol, ethyl alcohol, isopropyl alcohol, or any combination of these three alcohols; and for the cashew kernel oil comprises liquid propane.  The separation is preferably effected on the mixed liquid obtained by heat-pressing the comminuted cashew nuts or alternatively on the solution obtained by extracting the comminuted mass with a solvent which dissolves both the shell liquid and the kernel oil, either before or after the removal of this solvent from the solution.  The specified solvents common to both the shell liquid and the kernel oil comprise petroleum spirits, naphtha, textile spirits, acetone, propyl alcohol, butyl alcohol, or a higher alcohol.  In the first method, the expressed liquid containing some finely-divided solid matter is agitated with a solvent selective for the shell liquid and then allowed to stand and separate into two layers, a solution of the shell liquid in the solvent and a pasty layer of the finely-divided solid in the kernel oil.  The two layers are separated and the pasty mass treated with one of the common solvents above, such as naphtha, which dissolves out the kernel oil and leaves a solid nitrogenous residue.  The solvents are distilled off from the respective solutions leaving the cashew nut shell liquid and cashew kernel oil in each case.  The deoiled p  cake from the pressing operation may be treated with one of the common solvents above to remove any residual shell liquid and kernel oil.  After removal of solvent from the resulting solution, the liquid may be separated into the shell liquid and kernel oil as before.  In the alternative method, the solvent solution containing both the shell liquid and kernel oil with a small amount of solid matter is separated into the shell liquid and kernel oil as in the first method, before or after the removal of the common solvent.
Patent GB-238550-A (GB)
Title: Improvements in thermionic amplifying apparatus
IPC: H03F3/48
Filed: 1925-08-12
Abstract: 238,550. British Thomson-Houston Co., Ltd., (Assignees of Hull, A. W.). Aug. 15, 1924, [Convention date]. Thermionic amplifiers.-A thermionic valve 1 having a cathode 2, plate 3 and grids 4. 5. is arranged to produce a negative resistance in the cathode-plate circuit and so that high frequency oscillations are impressed on the grid 4 together with low frequency oscillations .so that the valvo 1 serves as a dual amplifier. The plate circuit 7. 8 is preferably tuned by simultaneously variable inductance and capacity and a detecting device directly or indirectly associated there with and with the grid circuit so as to impress the low frequency oscillations on the grid 4. The Figure shows the detector 9 coupled by a condenser 18 to the plate circuit 7, 8 and by a resistance 19 to the input of the valve 1. The crystal detector 9 is polarized and the grid 4 is preferably biased by potentiometer tapping 20 through a choke 23. Filters 24, 25 may be provided to exclude high frequency currents which are by-passed from the low frequency circuit by a condenser 17.
Patent GB-1414846-A (GB)
Title: Recoding device
IPC: H03M7/08
Filed: 1973-04-30
Abstract: 1414846 Recoding PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 30 April 1973 [4 May 1972] 20376/73 Heading G4A A device for recoding a number consisting of successive digits of radix R 1  to a lower radix R 2  includes a register 4 for storing the part of the number which has been recoded, an adder adding (1) a m multiple and a n multiple of the recoded part (where m + n = R 1  and m and n are integer powers of R 2 ) and (2) the output of an auxiliary coding unit, coding each digit into two parts which have maximum values m-1 and n-1 and a further output signal which has the value "1" when the digit being coded has the value m-1. As described for the case where R 1 =10, R 2 =2, m=8 and n=2 each decimal digit represented by a signal on one of ten lines from a register 1 is fed via OR gates to an auxiliary register 3. The arrangement is such that digits of value 0-7 are represented by binary bits in sections 0, 1, 2 of register 3. The digits 8, 9 are represented by binary "1" in each section 0, 1, 2 (representing 7) and a "1" in section 3 of the register. The digit 9 also has a "1" signal in section 4 of the register. The outputs of sections 0, 1, 2 of register 3 are connected in parallel to inputs of sections 0, 1, 2 respectively of the adder, sections 3 and 4 being connected to section 0. The adder outputs are connected to equivalent sections of register 4, the outputs from which are connected back to the inputs of the adder to effect multiplication by ten (the section representing 2<SP>i</SP> for example being connected to adder inputs representing 2<SP>i+1</SP> and 2<SP>i+3</SP>). Alternatively the recoding may be performed in series.
Patent GB-675211-A (GB)
Title: Machine and method for laminating and reinforcing webs
Filed: 1949-08-05
Abstract: 675,211. Creels. HOLLAND, J. W. Aug. 5, 1949 [May 25, 1949], No. 20441/49. Class 120(ii) [Also in Group VIII] In a rotatable turret for winding continuous reinforcing filaments around advancing superimposed webs, each spindle unit 120 comprises a backing member 124 to which is secured a removable sheetmetal shell 122 supporting a bobbin 132 from which a filament is drawn through a grommet-protected aperture 140 in a cap 136, a thread-tensioning device 148 and a grommet 152. The unit is secured in position by pivotally-mounted locking members 106. Specification 675,023, [Group VIII], is referred to.
Patent GB-293876-A (GB)
Title: Improvements in or relating to signalling beacons
IPC: H01J61/32
Filed: 1928-07-14
Abstract: 293,876. Francotte, J. R. P. July 15, 1927, [Convention date]. Vacuum tubes.-A signalling beacon for aviation purposes consists of discharge tubes containing a rare gas such as neon and formed in the shape of two or more grids inclined to a horizontal plane so as to protect the lamps against weather and permit of the use of short hightension leads. As shown, two lamps 6, 7 of zigzag shape are mounted on insulators 8 on inclined members 5 of a frame supported on a pole 2 which carries one or two transformers 12 and a protective device 11. A sheet-iron base 3 is provided for collecting broken lamps or insulators. The lamps may be arranged in series, and may be mounted in rectangular metal frames removably mounted in the frame 5. The lamps may be mounted on four inclined panels. Specification 277,739 is referred to.
Patent GB-1023633-A (GB)
Title: Removable partition walls
IPC: E04B2/74
Filed: 1964-05-19
Abstract: 1,023,633. Building panels; partitions; clamps. F. A. KILGORE. May 19, 1964 [June 8, 1963], No. 20496/64. Headings E1B, E1V and E2B. In a sound-resistant partition comprising a number of interengaging tongued and grooved panels 10 each panel extends from floor to ceiling and comprises a lead sheet 18, Fig. 2, a porous layer 19 (e.g. of glass fibre or cellular plastics) and outer rigid sheets 22, 23 (e.g. of plywood) which may be covered with P.V.C. or like fabric, the sheets being secured to a framework formed by two posts 13, 14 and two rails 15, 16. Reinforcing angles 24 may be provided. Adjacent panels interengaging by tongues 25, grooves 26 and gaskets 28 are clamped together by flanged cam latches 29, Fig. 5. The end panel has a tongue 38 engaging foam rubber 43 in a recess 39 in a wall member 40, the foam rubber being compressible to allow fitting of the panels. The upper panel rails 15 have tongues 27 engaging a rubber-lined groove of a ceiling member 32, while the lower rails 16 carry a rubber strip 36 engaging the floor. One of the panels, Fig. 4 (not shown), has a central post providing a vertical tongue projecting from the panel face for engagement by the groove of a panel perpendicular thereto. Each panel incorporates a space 10 between the lead sheet 18 and porous layer 19, or between the layer 19 and sheet 23.
Patent GB-968243-A (GB)
Title: Improvements in or relating to toolholders
Inventor: OAKES VICTOR WILLIAM
IPC: B23B27/16
Filed: 1962-05-29
Abstract: 968,243. Tool-holders. EDGAR ALLEN & CO. Ltd. Feb. 6, 1963 [May 29, 1962], No. 20551/62. Heading B3B. A tool-holder for a bit 4 having a tungstencarbide tip 5 comprises a groove 3 in which the bit is adjustable by a screw 14 engaging the end of the bit, and a clamping plate 16 secured by a screw 19. This engages a slot 20 in the plate 16, permitting adjustment of the plate by a screw 34. A lip 26 on the plate engages a slot 25 in the holder-body 1, and a recess 27 receives a chip breaker 28 located by one or more screws or pegs engaging holes 32 in the breaker such that either of its breaking edges may be exposed. The base of the bit 4 is narrower than its top.
Patent GB-822189-A (GB)
Title: Improvements in electrical connections
Inventor: KIBBEY RONALD LIONEL
IPC: H01R4/02
Filed: 1956-07-03
Abstract: 822,189. Wire terminals. ROLLS-ROYCE Ltd. July 3, 1957 [July 3, 1956], No. 20644/56. Class 38 (1). A braided lead 18 is secured to a terminal 10 having an internally threaded socket 14 brazed into sleeves 12, 13 therein by slipping a rubber, synthetic rubber or P.T.F.E. sleeve 19 over the lead so that an end portion of the lead projects from it, inserting the lead 18 and sleeve 19 into socket 14, crimping that part of the socket lying between sleeves 12, 13 on to sleeve 19 and soldering the projecting end 21 which passes through socket wall 16 to said wall.
Patent GB-156293-A (GB)
Title: Improved apparatus for forging or pressing axles
IPC: B21K1/06
Filed: 1919-08-22
Abstract: 156,293. Perry, S. Aug. 22, 1919, Shafts are moved axially and rotated, while being forged between dies, by two adjustable beadstocks on a carriage supported by the lower die or anvil 29. The work is gripped between removable devices 6 having non-circular shanks engaging sockets 7 with axial springs which yield as the work lengthens. One or both the spindles 8 are rotated, by handles 13, in bearings 17 which can be adjusted vertically, by screws 34, to free the work from the die 29 for rotation or insertion of necking dies in grooves 26. The bearings 17 supported by springs 19 on slides 14 which are adjusted by bolt holes 33 and by screw and nut 3, 5 on the carriage 28 which runs on track 20 and is moved by pinion and rack 23.
Patent GB-316425-A (GB)
Title: Improvement in lawn mowers
IPC: A01D34/47
Filed: 1928-07-17
Abstract: 316,425. Tibbenham, L. J. July 17, 1928. Clutches, free-wheel.-The pinratchet pinion for driving the cutter spindle of a lawn-mower having side wheels is provided with two or more pins 5 passing freely through holes in the cutter spindle 4 and adapted to engage ratchet formations 3 projecting inwardly in a recess in the pinion 1, the holes in the spindle being arranged at different angles.
Patent GB-1062533-A (GB)
Title: Method of producing aromatised extract powders
IPC: A23L27/10
Filed: 1965-05-17
Abstract: An aromatised extract powder, especially coffee, is prepared by passing roasted and ground material in counterflow to a stream of hot carrier gas, for example in a cascade of fluidised beds, to dearomatise the solid, which is thereafter extracted, the extract is powdered by drying, and is contacted in counterflow with the enriched carrier gas, again preferably in a cascade of fluidised beds, to transfer the aromatic substances to the extract powder. The dearomatisation is preferably effected at 150-200 DEG C. and the transfer to the powder at 10-30 DEG C.  The depleted carrier gas may be passed through a condensation zone to remove any remaining aromatics, which may be passed to the extraction stage, prior to recycling to the de-aromatisation stage.