baber/WOPTO huggingface dataset:
Patent GB-1458843-A (GB)
Title: Container
IPC: B29C51/22
Filed: 1974-02-25
Abstract: 1458843 Pie dishes DU PONT OF CANADA Ltd 25 Feb 1974 [28 Feb 1973] 17816/76 Divided out of 1458841 Heading A4A The subject matter of this specification is substantially identical with that of (Specification 1458841) from which it is divided, but the claims relate to an open container, e.g. a pie dish, made from a polyamide having a relative viscosity (as defined in the specification) in the range of about 25 to 65, and a thickness in the range from 2 to 30 mils. The polyamide can be blended with a filler, pigment, or a heat stabilizer.
Patent GB-227737-A (GB)
Title: Improvements in entertainment and like apparatus
IPC: A63J1/02
Filed: 1924-07-25
Abstract: 227,737. Blau - Vogel Russisch- Deutsche Theater Ges. Feb. 28, 1924, [Convention date]. Theatrical applicances.-Flaps 8 - - 14 hinged to a background 2 are coloured on one side to correspond with the background and bear a design on the reverse side, so that when catches 15, 16 holding the flaps are released, the design is made to appear on the background. Openings 3 - - 7 are made in the background and are preferably covered by the flaps when these are in their raised position. Articles or a performer's head, arms, &c., may be passed through the openings, curtain 18 and cuffs 19 of the same colour as the background preventing the passage of light. The flaps may be operated by gravity or by springs. A hair-dressing 20 may be concealed by the flap 12.
Patent GB-957543-A (GB)
Title: Acylated cephalosporanic acid derivatives
IPC: C07D501/20
Filed: 1962-05-09
Abstract: The invention comprises compounds of the formula: <FORM:0957543/C2/1> (wherein A is hydrogen, lower alkanoyloxy, benzoyloxy, hydroxy, pyridinium or when taken together with M a monovalent carbon-oxygen bond; M is hydrogen, a non-toxic cation, an anionic charge when A is pyridinium or when taken together with A a monovalent carbon-oxygen bond; each X and X1 is hydrogen, halogen, lower alkyl, lower alkoxy, nitro or trifluoromethyl; and Y is hydrogen or methyl; the word "lower" referring to groups containing at most 6 carbon atoms) and their preparation by treating a compound of the formula: <FORM:0957543/C2/2> (wherein B is hydrogen, acetoxy, pyridinium or when taken together with M 1 a monovalent carbon-oxygen bond; and M 1 is as M above) with a compound of the formula: <FORM:0957543/C2/3> (wherein X and X 1 are as above defined, D is -O.CO.O lower alkyl or halogen and Z is methyl, or Z and D together are -CO.O-) and, if required, hydrolysing B when acetoxy to give the hydroxy compound by treatment with acetylesterase, and, if required, re-esterifying. Salts may be formed with alkali metals, calcium, ammonia and organic amines.  Examples are given.  Compounds of the second general formula above are prepared from Cephalosporin C.  Upon acid hydrolysis this gives 7-aminocephalosporanic acid of the formula: <FORM:0957543/C2/4> and also 3-hydroxymethyl-7-amino-decephalosporanic acid lactone of the formula: <FORM:0957543/C2/5> and these are separated by chromatographic techniques.  The former on enzymatic cleavage gives 3-hydroxymethyl-7-amino-decephalosporanic acid which may be esterified to give lower alkanoyl esters or the benzoyl ester. Cephalosporin C and pyridine give 3-pyridiniummethyl-7-amino-decephalosporanic acid inner salt; while reduction of cephalosporin C gives, following hydrolysis, 3-methyl-7-amino-decephalosporanic acid, also obtained by reduction of 7-amino-cephalosporanic acid.  Compounds of the third general formula above wherein Z is methyl and D is chlorine are prepared by reaction of the appropriate acids with thionyl chloride, the acids being in turn prepared by methylation of the corresponding mandelic acids with dimethyl sulphate.  Mandelic acid carboxyanhydride is prepared from the acid and phosgene.  The cephalosporin-type compounds of the invention, which are stated to possess antimicrobial activity, may be made up into pharmaceutical compositions with suitable carriers.  Specification 953,695 is referred to.
Patent GB-562192-A (GB)
Title: Silencing means for gaseous currents
IPC: F01N13/18
Filed: 1942-12-16
Abstract: 562,192. Silencers. VOKES, C. G. Dec. 16, 1942, No. 17900. [Class 7 (ii)] The wall of an exhaust silencer &c. comprises at least two thicknesses of sheet material 1 formed from a single wound sheet with the ends 2, where they overlap. welded or otherwise secured together and on to the intermediate sheet. The layers may be separated by a layer providing air pockets therebetween.
Patent GB-735081-A (GB)
Title: Process for the removal by adsorption of organic substances from liquids
IPC: C13B20/14
Filed: 1953-06-29
Abstract: Artificial resins containing polar groups of moderate to strong basic character, i.e. capable of binding anions of carboxylic or glutamic acid, are employed for adsorbing colouring matter, odoriferous- and taste-substances from liquids, especially saccharine liquids. Examples of the prepartion of suitable resins involve (A) reaction, under heating, of aniline, tetraethylene pentamine, water and epichlorhydrin, drying the gel so formed, and granulating the dried gel; (B) reaction, under heating, of water, tetra-ethylene pentamine and epichlorhydrin, drying the gel so formed, and granulating the dried gel; (C) reaction, under cooling and in a concentrated sulphuric acid solution, of formaldehyde and trianisyl sulphonium chloride made from thionyl chloride and anisole in the presence of aluminium chloride, heating to produce a gel, allowing the gel to harden, granulating to the desired size, and washing with alkaline solution and then with water. Specifications 650,706 and 733,376, [Group VI], are referred to.ALSO:In the removal by adsorption of colouring matter, odoriferous and taste-substances and the like from liquids, e.g. sucrose-containing solutions, there is used an insoluble, surface-active artificial resin having polar groups of a moderate to strong basic character, i.e. capable of binding anions of carboxylic or glutamic acid.  The alkalinity of the adsorbing resin is, if necessary, reduced before use to pH below 9 by treatment with an electrolyte solution, e.g. a solution of an acid such as hydrochloric acid, a bicarbonate, ammonium sulphate or ammonium chloride.  The resin is preferably employed in a swollen condition, e.g. having dry substance less than 400 g./litre, and the temperature is preferably above 70 DEG  C.  The liquid may be purified preliminarily with the aid of calcium carbonate, calcium phosphate, aluminium hydroxide, diatomaceous earth, blood, activated carbon, bone black, washed, sulphuric-acid treated sawdust, or a cation exchanger such as that prepared by treating coal with sulphuric acid. The process is of particular advantage in treating liquids containing invert sugar and glucose.  The resin is regenerated by washing with an alkaline solution. Examples are concerned with decolourizing the liquid obtained on washing the syrup film from centrifuged Cuba raw sugar and the liquid centrifuged from a white beet sugar boiling, the liquid being percolated over granules of a dried resin gel prepared by the reaction of aniline, tetraethylene pentamine, water and epichlorhydrin.  Specifications 650,706 and 733,376 are referred to.
Patent GB-832326-A (GB)
Title: Character recognition equipment
IPC: G06V30/18
Filed: 1958-06-06
Abstract: 832,326. Recognising characters. STANDARD TELEPHONES & CABLES Ltd. June 6, 1958 [June 8, 1957], No. 18153/58. Class 106 (1). Characters are identified by being accurately projected on to a plate 12, Fig. 2, of insulating material on which there are a number of elongated light-sensitive resistors a-i, signals being derived from the changes in resistance caused by the image being fed to a identifying circuit. As shown in Fig. 4, the photo-resistors a-i are each connected in one arm of a bridge circuit with a comparison resistance 13-21, the centre points being taken to one input of a comparing amplifier 23-31. Standard fixed resistances R are connected in parallel with each photo-resistor pair across the supply 22 and their centre point is connected to the other input to the amplifier. The amplifiers produce, for each photo-resistor, a signal if the character image is superimposed to more than a certain extent on that photo-resistor; otherwise no signal is produced. These binary outputs are connected empirically to gates 32-41, one for each character to be recognised and an output on one of lines 1-0 indicates the character. To recognise characters of different font there may be a number of plates, the image being simultaneously projected by prisms on to them all. Centring.-The image is projected on to a centring plate 42, Fig. 5, having symmetrically placed groups of parallel photo-resistors L0-L2, O0-O2, R0-R2 and U0-U2. The signals from these are used to shift the character image until it is centred with respect to the upper and lower, and right and left series of resistors. These resistors may be superimposed on the sensing plate 12, Fig. 2. Compensation for background.-Fluctuations in the brightness of the background are offset by providing a photo-resistor which is out of the field of the character and which responds to the background illumination. This is inserted in the bridge circuit in place of one of the standard resistors R to adjust the threshold resistance level against which the photo-resistors are compared.
Patent GB-133808-A (GB)
Title: An Apparatus for Recessing Rubber or the like by Means of Hand or Power Driven Cutting Tools.
Inventor: PHIPPS WILLIAM HENRY
IPC: B26F1/40
Filed: 1918-11-06
Abstract: 133,808. Phipps, W. H., and Hooper, W. T. Nov. 6, 1918. Rotary punching machines.- Apparatus for recessing rubber &c. to a given depth comprises a tubular cutter a, having adjustably secured thereon a depth setter f, and having located therein a spring lifted recessing-cutter c carrying a pin d slidable in a slot b in the tubular cutter. This pin acts as a stop and as a guide, and transmits the rotary movement to the tubular cutter; material removed by the internal cutter passes out through an opening l. The depth setter f may be integral with the tubular cutter, the lower portion of this being adjustable in the setter; the setter may have a ball bearing on its under face when a metal jig is employed. The cutter may be driven by hand or by power.
Patent GB-903020-A (GB)
Title: Improvements in or relating to lampshade supporting arrangements for use in electriclighting fittings
Inventor: REYNOLDS ROBERT JAMES
IPC: F21V17/08
Filed: 1959-05-28
Abstract: 903,020. Lamp shades and holders. GENERAL ELECTRIC CO. Ltd. May 5, 1960 [May 28, 1959], No. l8215/5 Class 75 (2). A lampshade supporting device comprises a bracket having attachment means for attaching the bracket to a lampholder assembly and terminating away from the attachment means in a lug and a co-operating mounting member attached to the inside of a lampshade and which can be fitted on to the lug for mounting the lampshade on the assembly, the mounting member having at least two openings into which the lug can alternatively be inserted without deformation of the bracket or lug for enabling the lampshade to be supported on the bracket in at least two different positions, the shape of the lampshade and/or the position on it of the mounting member being such that the effective configuration of the lampshade relative to the bracket attachment means is different in each of the positions. One end of the bracket 1 fits on the electric light fitting, the other end has a stepped part 7 and a lug 6 which engages in an aperture in a mounting member 15 secured to the lampshade by lugs 22 passing through slots in the lampshade. The member 15 has a rectangular base and side walls which decrease in width towards the upper end and each edge is turned in and has a rib 20 decreasing in height towards the upper end. The lugs 22 extend from the inturned edge. The mounting member may be made of resilient material to grip the lug and the intermediate portion 5 may be slotted. The portion 5 and end portion 2 may have the edges turned up to provide strengthening flange 8. A cover-plate may fit over the lugs 22. The mounting member is open at each end so that the lug 6 may enter either end or the two or more apertures may face the same end for adjusting the height of the lampshade on the holder or the arrangement of apertures may be combined.
Patent GB-530979-A (GB)
Title: Improvements in or relating to radio direction finders
IPC: G01S1/02
Filed: 1939-06-22
Abstract: 530,979. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 22, 1939, No. 18249. Convention date, June 30, 1938. [Class 40 (v)] The bearing of a distant transmitter is shown continuously as a radial trace superimposed on compass markings, all produced by the deflection of a rotating electron stream, on the fluorescent screen of a cathode ray indicator. The signals received on an Adcock or other fixed directive aerial-system N.S.E.W. are supplied to balanced modulators 23, 25 together with modulating currents derived from a master oscillator 1 and fed in quadrature from a phase-splitter 17. The suppressed carrier-wave is re-introduced from a central non-directive aerial AA, and the combined currents are fed to the main receiver 29. They then pass through an amplilier and filter 33 to an impulse generator 35, which is coupled to the input of the cathode ray tube 9. The master-oscillator 1 also supplies sub-frequencies generated at 3, 5, and 7 to the cathode ray tube, in order to produce corresponding radial deflections of the electron stream which appear as " compass markings 39 on the fluorescent screen. A suitable low frequency is also fed from a multi-vibrator 11 through a phase-splitter 15 to the deflecting plates of the cathode ray tube in order to impart a circular motion to the electron stream. The modulation of the aerial input produces a rotating cardioid curve, the phase of which varies with the bearing of the distant transmitter. This is superposed as a radial trace on the fluorescent screen in the cathode ray tube, formed under the combined influence of the " rotating " voltages from the phase-splitter 15 and the received signals applied through the impulse generator 35.
Patent GB-640651-A (GB)
Title: Improvements in and relating to carrier current control systems
IPC: H02J13/00
Filed: 1947-07-10
Abstract: 640,651. Electric control systems. BRITISH THOMSON-HOUSTON CO., Ltd. July 10, 1947, No. 18332. Convention date, Oct. 24, 1942. [Class 40 (i)] A load control system comprises a relay forming part of a resonant circuit and responsive to an impulse of predetermined duration at the resonant frequency to actuate switch means to alter the resonant frequency whereupon transmission for a predetermined time of a further impulse, at the second resonant frequency, causes the load to be energized. As shown in Fig. 1, to switch a load 12 on to a power line 10, an impulse at frequency f is sent over the line from the control point. The series circuit 23, 24, tuned to this frequency, responds to pull up the relay 26 and energize the heater 29 of the bimetal strip 18, which is of the type comprising two opposed bimetal sections mounted end-to-end with the heater at one end so that the strip bends first in one direction and then with the continued application of heat in the other direction. The pulse is continued for a time, e.g. ten seconds, sufficient to cause bending of the strip to break the relay circuit at contact 25 and at contact 30 connect the tapping on coil 24 to line to re-tune the series circuit 23, 24 to frequency f2. An impulse of this frequency is now sent over the line 10 whereupon relay 26 again responds to remake the circuit of heater 29 causing further bending of the strip to close at contacts 16, 17 the circuit to load 12. The switch 13 is held in the operative position by a magnet 18a when the control impulse at frequency f2 ceases. To disconnect the load, an impulse of frequency f2 is sent for a time sufficiently long to cause bending of the strip 18 in the opposite direction to break first the load circuit and then the heater circuit when the resonant circuit is retuned to frequency f1. In a modification, Fig. 2, two bimetal switches 32, 34 are used. As before, transmission of the first impulse at frequency f1 causes rel'ay 26 to respond and energize both heaters 36, 37. The circuit of relay 26 is broken at contact 33 after a time but the thermal lag of the switch causes it to make with contact 38 to retune the series circuit to f2, the subsequent line impulse at this frequency energizing relay 26 to continue the heating until switch 34 closes the load circuit, when the impulse is stopped and switch 32 reverts to normal to retune the resonant circuit 23, 24 to f1. To disconnect the load in this case an impulse of frequency f1 of appropriate duration followed by a longer impulse of frequency f2 must be sent to cause switch arm 34a to bend in the opposite direction. In further modifications, Figs. 3, 4 (not shown), the change in resonant frequency of the receiver is effected by switching in and out of a series or parallel condenser. By using a plurality of taps on the inductance 24 or by using a plurality of condensers the system may be extended to the use of a great number of signalling frequencies.
Patent GB-1102561-A (GB)
Title: Improvements in and relating to off-shore drilling platforms
IPC: B63B35/44
Filed: 1964-05-04
Abstract: 1,102,561. Offshore floating structure. J. G. GERMAN. 30, April, 1965 [4, May, 1964], No. 18374/64. Heading EIH. A marine floating structure 10 comprises a horizontal platform 11, supported by four buoyantly supported vertical column assemblies 16 each of which includes a vertical column 17 surrounded by a baffle in the form of an extensively perforated cylindrical shell or wall, 19 and each column assembly 16 terminates in a submerged foot portion 20 comprising a coaxial thick buoyant disc chamber designed to provide the main lifting force. In. other embodiments the columns 17 may be relatively narrow in section or may be of moderate section and extended in depth to provide sufficient lifting force in themselves. In this latter case, Fig. 6 (not shown,), one or more planar baffles 27 are located below the mean sea surface at a distance at least equal to half the maximum wave height.
Patent GB-878876-A (GB)
Title: Improvements in apparatus for performing logical operations in electronic digital computers and the like
IPC: G06E1/04
Filed: 1958-06-09
Abstract: 878,876. Digital electric calculating-apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 9, 1958 [June 8, 1957], No. 18382/58. Class 106 (1). Apparatus for performing logical operations in electronic digital computers comprises a first polarizing filter adapted to receive radiation from a source and to transmit part of said radiation as a beam polarized in a particular plane, a doubly refracting element adapted to divide radiation transmitted by said first polarizing filter into two components having relative phases determined by data-representing electric or magnetic fields applied to said element, a second polarizing filter disposed to receive the resultant of said components and means adapted to detect radiation transmitted by said second filter. The actual circuit described is a parallel binary adder. According to the Specification light, polarized by a filter 3, Fig. 1, will pass through a crystal of ferroelectric material 4 and will not pass through a further filter 9 having its direction of polarization inclined at 90 degrees to the first filter 3, while when an electric field is applied to the crystal 4 the beam of light does pass through the filter 9 and can be detected by a photoelectric cell 16. Thus the system 3, 4, 9 functions as a light gate, light energizing from the filter 9 only when an electric field is applied to the crystal 4. A number of these devices are needed to form an adder, Fig. 3, having two two-bit inputs LX 0 , LY 0  and LX 1 , LY 1  and a carry input LC 0  from a previous denomination. The circuit requires eight sources 31-38 of beams of light, and the input numbers are represented by the presence or absence of electric signals. The sum is represented by the presence or absence of beams of light S 0 , S 1  and C 2 .
Patent GB-651829-A (GB)
Title: Integral finned tubing and method of forming the same
IPC: B21C37/20
Filed: 1946-09-27
Abstract: 651,829. Rolling finned tubes. CALUMET & HECLA CONSOLIDATED COPPER CO. Sept. 27, 1946, Nos. 18404/49. Convention date, Oct. 1, 1945. Divided out of 651,774. Drawings to Specification. [Classes 83 (ii) and 83 (iv)] Skew-rolling.-The subject-matter is similar to that of Specification 651,774, but the claims are directed to a finned tube produced by applying rolling pressure to a tube in a radial inward direction to displace material for the fins radially outwards without axial pressure. Specification 651,775 also is referred to.
Patent GB-733556-A (GB)
Title: Dental instruments
IPC: A61C19/055
Filed: 1952-07-21
Abstract: 733,556. Dental engines. ROSENBERG, S. July 21, 1953 [July 21, 1952], No. 18434/52. Class 81. (2) A guide for a dental drill, to ensure parallelism between holes, comprises a plate P which is secured in the mouth, preferably by means of a temporary moulded plate, and which carries a spindle on which there is a rotatable bush 7. The bush has one or more lugs 3, 4 in which a pivot pin 2 on a guide arm 1 can engage and a further pivot 13, at the other end of the arm 1, supports the drill head H by means of a lug 14. The lugs 3 and 4 are displaced axially so that, by inverting the bush 7, a variety of positions of the arm 1 is obtainable. In a modification, Fig. 10 (not shown), the guide arm is formed in two articulated parts and it is further proposed to provide for the axis of the tool to be held at any set angle by means of a pivot block which fits on to the drill head, so that the pivot on the guide arm is set at an angle to the lug 14.