baber/WOPTO huggingface dataset:
Patent GB-1148942-A (GB)
Title: Improvements relating to filters
IPC: B01D29/01
Filed: 1966-04-13
Abstract: 1,148,942. Filter. PRECISION MECANIQUE LABINAL. 13 April, 1966 [13 April, 1965], No. 16274/66. Headings B1D and BIT [Also in Division Dl] A method of producing a filter structure comprises the steps of sandwiching between two sheets of malleable filter material f + g Fig. 6 an interlayer of a sheet of resilient material, h, alternately folding the sandwich to produce in the sandwich a series of mutually identical substantially parallel folds of the sandwich, and then disengaging the two outer folded structures from one another and from the interlayer by drawing such interlayer from between the two outer sheets. The method may be used to form filter structures illustrated in Fig. 7, and also Figs. 11 and 14 (not shown). In Fig. 7, and air filter structure comprises a sheet of malleable filter material, alternately folded in such a manner as to be concertinard to provide a number of substantially parallel folds, each fold comprising a pair of adjacent flanks j joined by a curved fold end region a or b, each flank being common to two adjacent folds, the arrangement being such that the folds with end regions a are mutually identical and define a larger area in profile than the folds with end region b which folds are also mutually identical, the folds being corrugated. The embodiment of Fig. 11 (not shown) shows an annular liquid filter with chevroned corrugations, and the embodiment of Fig. 14 (not shown) shows an annular filter with curvilinear corrugations.
Patent GB-1219494-A (GB)
Title: Plant control system
Inventor: AGNEW ALEXANDER CAMERON
IPC: G05B19/14
Filed: 1968-04-04
Abstract: 1,219,494. Programmed process control. ILFORD Ltd. April 2, 1969 [April 4, 1968], No.16310/68. Heading G2N. A control system for a process plant in which a number of batches of material are produced, the treatment of one batch commencing before the completion of an earlier batch, comprises a plurality of readers each of which is interrogated in completion of a step in a corresponding pre-set programme As shown, stock solutions for production of a photographic emulsion are held in tanks 1 and programmed quantities, metered by flowmeters 3, are fed to holding jars 2 under control of valves 4. The contents of the jars are fed through valves 5 into mixing vessels 6, from which, after a programmed time interval, the mixtures are released into a mixing vessel 8 through a valve 7. The mixture from the vessel 8 is then released through a valve 11 into a vessel 10 where it is finally mixed with a liquid from a tank 9 admitted through a valve 12. The completed batch is then run off through a valve 13. Each vessel can be provided with mechanical agitation and temperature control element for heating and cooling. The following batch of mixture can be started as soon as the appropriate jars 2 and vessels 6 are empty. The formation and progress of each batch is controlled by programme information on punched cards which are fed through card readers CR1-CR3 which are individually interrogated by a reader decoder RD in reponse to the receipt of a completion signal, after a set time interval, by a control circuit CC. If no return signal is obtained by the control circuit CC a signal is sent to an alarm signal indication A. At the end of a programme a new card is inserted in the appropriate reader.
Patent GB-1501706-A (GB)
Title: Multi-frequency signal receivers
IPC: H04Q1/453
Filed: 1975-04-21
Abstract: 1501706 Tone receivers COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 21 April 1975 [24 April 1974] 16335/75 Heading H4K A multifrequency tone receiver of the type having a number of detecting circuits connected in parallel to an input comprises in each detecting circuit a signal generator, the output of which is modulated with an incoming tone to produce a heat frequency which is common to all the detecting circuits. Each detecting circuit further comprises a filter to separate out said heat frequency and the output of each detecting circuit is coupled to common logic circuitry which enables a signal to be produced at an output corresponding to the frequency content of the incoming tone. The signals to be detected are 2 out of 6 multifrequency tones comprising 15 combinations a 1 -a 15  of the frequency as 700-1700 Hz arranged in 200 Hz steps. In addition a single tone of 1900 Hz used as a control signal is to be detected. In one embodiment the receiver comprises nine parallel detectors each including a respective square wave signal generator G1-G9. Generators G1-G6 have respective frequencies 900-1900 Hz arranged in 200 Hz steps and generators G8 and G9 have frequencies of 500 Hz and 700 Hz respectively. Each detector further includes a 200 Hz filter F1-F9 and the tone frequencies w and generator frequencies w0 are such that each single tone w will produce an output at at least two of the filters F1-F9, and three of the tones 1300 Hz, 1700 Hz and 1900 Hz will each produce outputs at three of the filters because of a significant w-3w0 frequency component due to the use of square wave generators. The logic arrangement of Fig. 3 enables unique outputs to be produced for the 15 dual tones a 1 -a 15 , and the control signal ac. A no tone present output S = D2 + D3 + D8 is also produced. A further arrangement using 800 Hz filters and a set of seven generator frequencies from 700-2100 in 200 Hz steps excluding 1300 Hz is described, which enables the logic of Fig. 3 to be simplified. Fig. 4 (not shown) illustrates an arrangement using 600 Hz filters wherein one of the square wave generators is coupled to two detecting circuits. The devices T1-T9 used for modulation may be F.E.T.'s.
Patent GB-751055-A (GB)
Title: Improvements in rotary blowers and pumps of the positive displacement type
IPC: F04C18/08
Filed: 1954-06-03
Abstract: 751,055. Rotary pumps. GENERAL MOTORS CORPORATION. June 3. 1954 [June 22, 1953], No. 16384/54. Class 110(2) In a rotary pump having co-operating lobed or toothed gears at least one of the gears is divided in a plane normal to its axis of rotation into two parts of different thickness one of which is fixed on a shaft and the other rotatable on the shaft. Fig. 9 shows a gear pump with the driving gear 45 divided into a part 46 secured to and driven by a shaft 49 and a part 47 freely rotatable on the shaft 49 so that manufacturing tolerances between the gear teeth are absorbed and a more uniform non-pulsating delivery from the pump obtained. The driven gear 44 may be divided into two parts. The parts of a divided gear are of different thickness and arranged so that a thick part of one gear meshes with a thin part of the other gear and only one of the parts of the divided gear is driven by a shaft. Rotary pumps of the n and n+1 lobes type are described having their gears and gear rings divided and having ball thrust bearings for the driving shafts.
Patent GB-1354025-A (GB)
Title: Capacitive pressure transducer
IPC: G01L9/00
Filed: 1971-05-21
Abstract: 1354025 Measuring fluid pressure electrically MEDICOR MUVEK 21 May 1971 [25 May 1970] 16402/71 Heading G1N A pressure transducer comprises hollow, cylindrical casing 12 in which a pair of compartments 62, 64 are defined by a diaphragm 10 of a synthetic elastic material on one side of which are disposed electrodes 32, 34 which form capacitences C1, C3 with fixed electrodes 25, 27 respectively on insulating support body 18 and on the other side of which are disposed electrodes 36, 38 forming capacitances C2, C4 with fixed electrodes 24, 26 respectively on body 16, which capacitances are connected in a bridge network so that capacitances on the same side of the diaphragm and movable therewith in response to changes in differences of pressure between the compartments e.g. C1, C3 are in opposite bridge arms. The diaphragm is clamped between O-rings 44, 46 in the casing 12. The electrodes are of essentially semi-circular shape with their chordal sides (i. e. diameters) adjacent to but separated from one another, the chordal sides of the fixed electrodes being aligned with the chordal sides of respective facing movable electrodes. The diaphragm and support bodies are circular. The transducer may be applied to measuring blood pressure.
Patent GB-646406-A (GB)
Title: Improvements in means for fixing tiles or panels to walls or other structures
IPC: E04B9/24
Filed: 1948-06-18
Abstract: 646,406. Securing wall panels. CULLUM, D. J. W. June 18, 1948, No. 16440. [Class 20(iv)] Wall panels 7 are secured to brackets 12 by screws 8 which are pushed, without turning, between resilient flanges 11 bordering slots 10 in a plate 16 which rests upon flanges 14 on the brackets 12. The plates 16 may be of metal or of plastic, in which latter case a tliin readily disruptable web may connect the edges of the flanges 11. The plates 16 may be reinforced by bands or folds which are arranged between rows of slots 10. The bracket 12 may be of channel shape or of T-shape, the marginal edges of the plates 16 resting upon the flanges of the T. The resilient flanges 11 may be formed in a flat panelengaging surface of the bracket itself, the separate plate 16 being then dispensed with.
Patent GB-600399-A (GB)
Title: Improvements in or relating to building blocks
IPC: E04B2/02
Filed: 1946-09-11
Abstract: 600,399. Building - blocks. MORGAN, E. G. Sept. 11, 1946, No. 16449/47. Divided out of 600,368. [Class 87(i)] A building-block comprises a frame-like portion a enclosing interlocking portions b which extend above the upper but do not reach to the lower face of the frame, a slot c being formed in the frame adjacent one portion b. Half and quarter blocks are provided with two portions and one portion b respectively.
Patent GB-942552-A (GB)
Title: Spool valve assembly
IPC: F15B13/04
Filed: 1960-05-10
Abstract: 942,552. Valves. PARKER-HANNIFIN CORPORATION. May 10, 1960 [May 12, 1959; Aug. 6, 1959; Feb. 3, 1960], No. 16498/60. Heading F2V. A spool valve assembly includes a housing having a bore 7 intersected along its axis by two inlet ports 8, 9 connected with an inlet passage 4, three exhaust ports 11, 12, 14 in communication with an exhaust passage 10, and two service ports 15, 16 connected to a piston and cylinder 19, and a valve spool 45 with a passageway 46 and alternating lands and grooves, the assembly having a neutral position in which an inlet and an exhaust port are in communication and the service ports are blocked, two operating positions in which one service port communicates with an inlet port while the other communicates with an exhaust port, and a float position in which the service ports communicate with each other and with exhaust. A perforated sleeve 70 restricts the flow from the service port 15 to the exhaust port 11 in one of the operating positions to prevent cavitation when the piston is driven by its load. The valve is shown in the neutral position in which fluid from the pressure port 4 flows around a relief valve 32 into the two ports 8 and 9, past two grooves 57 and 58 on the valve spool 45 and into the port 14 leading to the exhaust passage 10, the two service ports 15, 16 being blocked by lands 53, 54 and 50, 51. When the valve is moved to the raised position, R, lands 52 and 53 arrest the flow into the port 14 so that the rise in pressure causes a spring- loaded non-return valve (not shown) to allow fluid to pass into a space 21 and through a groove 59 into the service port 15. Exhaust from the motor flows out of the port 16 and through a groove 56 into the port 12. In the lower position, L, lands 51 and 52 close the port 14 and fluid passes through a second non- return valve (not shown) into a space 23 placed in communication with the port 16 by the groove 56. Exhaust from the port 15 passes through a groove 59 and orifices 71, 72 into a port 11. The spool 45 may be moved to its float position, F, by compressing a centring spring 83 and raising a detent member 85 until a groove 86 is engaged by a spring ring 89 when slots 60 and 61 are in alignment with the service ports 15 and 16 and an orifice 62 with the port 14, whereby fluid may flow from one end of the motor to the other through the bore 46 in the spool 45, the difference in fluid volumes displaced passing through the orifice 62. The groove 57 provides communication between the passages 4 and 10. The two non- return valves are housed in a common bore having a central connection with the passage 4. If the pressure in the latter becomes excessive it acts on an annular face A to lift the relief valve 32 against a spring 34. Both the spool 45 and the valve 32 may be inverted in the housing. A wiper seal 107 is provided for the spool which has metering slots in its lands and co-operates with a sleeve 100 to shorten its stroke. Specification 942,553 is referred to.
Patent GB-1078312-A (GB)
Title: 5-nitrothiazolyl-oxodiazacycloalkanes and process for their manufacture
IPC: A61K31/425
Filed: 1965-04-20
Abstract: The invention comprises compounds of the formula <FORM:1078312/C2/1> in which R1 represents a hydrogen atom or a C1- 7 alkyl group, Z represents a C3- 7 alkylene group which separates the two nitrogen atoms by 3 to 5 carbon atoms and which may be substituted by one or more C1- 7 alkyl groups, and R represents a hydrogen atom, a C2- 7 alkenyl group or a C1- 7 alkyl group which is unsubstituted or substituted by a hydroxy group or by a free or mono- or di-C1- 7 alkyl-substituted amino group or by an alkyleneimino or an oxa-, aza- or thiaalkyleneimino groups; acid addition salts thereof; and their preparation by (a) intramolecularly condensing a compound of the formula <FORM:1078312/C2/2> in which Z represents a C3- 7 alkylene group which separates the chlorine atom from its nearest nitrogen atom by 3 to 5 carbon atoms and which may be substituted by one or more C1- 7 alkyl groups, by heating in the presence of a basic condensation agent, and, if desired, reacting the compound obtained with formaldehyde, if desired in the presence of ammonia, a mono- or di-C1- 7-alkyl-amine, an alkyleneimine or an oxa-, aza- or thia-alkyleneimine, or an acid addition salt thereof, or reacting with a reactive ester of an alcohol of the formula ROH (in which R is as defined above) (except a hydrogen atom) and contains no hetero atoms or in which hetero atoms present are separated from the reactive esterified hydroxy group by at least 2 carbon atoms, and, if desired, converting a resulting acid addition salt in the corresponding free compound or converting a resulting free compound into an acid addition salt thereof, or (b) nitrating a compound of the formula <FORM:1078312/C2/3> e.g. by using a mixture of concentrated sulphuric acid and concentrated nitric acid or the mixed anhydride of nitric acid and a carboxylic acid, or by forming the nitric acid addition salt of a compound of the Formula III and treating it with an acidic agent.  Pharmaceutical compositions, having antiparasitary and antibacterial activity, for enteral, parenteral or topical administration, comprise a compound of the invention together with a pharmaceutical carrier.
Patent GB-1276786-A (GB)
Title: Improvements in toilet pads
Inventor: POTTER NORMAN
IPC: A47K3/28
Filed: 1970-04-08
Abstract: 1276786 Cleaning pads N POTTER 19 April 1971 [8 April 1970] 16595/70 Heading A4F [Also in Division A5] A cleaning pad (e.g. for washing and drying the human posterior) comprises a wet portion and a dry portion mounted on a common backing of moisture resistant paper or plastics. The two portions may be of paper or towelling, the wet portion carrying a wetting agent including a non- irritant liquid soap.
Patent GB-673061-A (GB)
Title: Improvements in and relating to the sensitation of photographic silver halide emulsions
Inventor: DORMAEL ANDRE EMILE VAN
IPC: C09B23/02
Filed: 1947-06-24
Abstract: 2-Benzthiazolylacetanilide is prepared by adding a mixture of aniline, xylene, and pyridine dropwise to a solution of ethyl 2-benzthiazolylacetate in xylene containing pyridine. Specification 609,033 is referred to.ALSO:<FORM:0673061/IV (c)/1> <FORM:0673061/IV (c)/2> <FORM:0673061/IV (c)/3> Cyanine dye bases of the general formula of Fig. 2, wherein Y and Y1 represent the atoms to complete 5- or 6-membered heterocyclic rings which may have other rings fused thereto, L, L1 and L11 are methine or substituted methine groups, R1 is unsubstituted or substituted alkyl, aralkyl, aryl, alkylene, or arylene, R is NH2 or substituted NH2, m and m1 are 0 or 1, and n is 1 or 2, are prepared by reacting compounds of the general formula of Fig. 4 with compounds of the general formula of Fig. 3, wherein Z is a halogen atom or an ether, thioether, selenoether, amino, or substituted amino group and An is an anion.  The corresponding quaternary salts are obtained either by quaternating the bases or by starting from the quaternary salts of the compounds of the formula of Fig. 3.  In examples, dye bases are prepared by refluxing together (1) 2-benzthiazolylacetanilide, 2 - b  - anilinovinylbenzthiazole ethiodide, ethyl alcohol, acetic anhydride, and triethylamine, and (2) 2-benzthiazolylacetanilide, 2-b -acetanilidovinylbenzoxazole methiodide, ethyl alcohol, and triethylamine.  Specification 609,033 is referred to.
Patent GB-1151912-A (GB)
Title: Improvements in or relating to Apparatus for Detecting Water Vapour in a Gas.
Inventor: GRAY PAUL SHAPTER
IPC: G01N27/12
Filed: 1966-04-15
Abstract: 1,151,912. Measuring moisture content electrically. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 10, 1967 [April 15, 1966], No.16708/66. Heading G1N. The quantity of water vapour in a gas is measured using a bead of glass mixed or coated with a metal oxide into which the ends of two electrodes are fused. A D.C. voltage source is connected across the electrodes and the current through the bead is measured and recorded to provide an indication of the quantity of water vapour present which forms a preferential electrical path on the surface of the bead. In one example a borosilicate glass bead is dipped into an aqueous solution of chromic oxide and is then dried to leave a deposit of the oxide on the surface of the bead. Alternatively the bead may be dipped into a nitrate solution of chromium nickel or cerium which is then heated to form the corresponding oxide. In a second example glass and metal oxide powder are mixed together and fused on to the spaced ends of two platinum electrodes. The metal used may be iron, manganese, vanadium, cobalt, zirconium or aluminium.
Patent GB-186664-A (GB)
Title: Improvements relating to collars for wear
IPC: A41B3/14
Filed: 1921-11-04
Abstract: 186,664. McDowell, F. Nov. 4, 1921. Collars, linen.-A reversible soft collar 2 is formed by sewing together round the edges two similar blanks of material each of which has along one side 5 the configuration of an ordinary neck band and along the other side 6 the configuration of the desired design of collar. The collar may thus be folded to display either of two wearing surfaces integral with the neck band. Specification 134,438 is referred to.
Patent GB-582961-A (GB)
Title: Improvements relating to liquid fuel control means for internal combustion prime movers
IPC: F02D35/00
Filed: 1944-09-04
Abstract: 582,961. Gas turbines. LUCAS, Ltd., J., WATSON, E. A., and IFIELD, R. J. Sept. 4, 1944, No. 16853. Drawings to Specification. [Class 110 (iii)] [Also in Group XXIX] The fuel supply to an I. C. prime mover is regulated by either sliding or rotary movement of a piston valve member under control of a barometric device through a servomotor system (see Group XXIX) whilst movement in the other direction is effected independently by manually operable or other means. The fuel output from a variable delivery pump may also be controlled by the regulated pressure drop and the temperature conditions.
Patent GB-148684-A (GB)
Title: Improvements in or relating to gauges for cutting machines and the like
IPC: B26D7/01
Filed: 1919-07-05
Abstract: 148,684. Goodman, D. July 5, 1919. Shearing.-An abutment gauge comprises a slotted bar 1 held down to the machine bed by a set-screw 6 and locking-plate 4. The end of the plate is turned down and engages notches in the bar, or may have a pin adapted to engage holes in the bar. The end 8 of the bar may be flat or of other profile.
Patent GB-607030-A (GB)
Title: Improvements in volume compression or expansion circuits
IPC: H03G7/02
Filed: 1946-06-04
Abstract: 607,030. Valve amplifying circuits. KOLB, O. K. (Electrical Fono-Films Co., Aktieselskab). June 4, 1946, No. 16956. [Class 40 (vi)] In a volume compression or expansion circuit comprising a pair of push-pull valves, resultant modulation of the signal being amplified, by the ripple on the control voltage, due to the impracticability of balancing the circuit for all values of control voltage is minimised by feeding back an appropriate voltage from the output to the control grids of each of the valves in the same phase sense. As shown, unit H rectifies and partially smooths the input signal I for application as a bias to the grids of valves V1 and V2, together with the signal I and a feed-back voltage obtained from a centre tap M2 on the primary of output transformer T2 via transformer T3. Rectifiers D1 and D2 are connected across the secondary of transformer T3 to discriminate on an amplitude basis against voltages appearing at M2 due to changes in the mean value of the control voltage. A similar effect may be obtained by connecting biassed diodes across a centre tapped tertiary winding on T3. T3 may be replaced by an equivalent resistance capacitance circuit. The rectifiers may be omitted in this arrangement.
Patent GB-823714-A (GB)
Title: Improvements in and relating to internal combustion engines with fuel injection
IPC: F02B23/06
Filed: 1956-06-01
Abstract: 823,714. Combustion chambers. MASCHINENFABRIK AUGSBURG - NURNBERG A. G. June 1, 1956 [June 7, 1955], No. 16960/56. Class 7(3) In an engine wherein the fuel is injected as a thin film 8 on the wall of the combustion chamber 3, from which it is removed as vapour by the air rotating in the chamber, the combustion chamber wall is formed by a layer 12 of porous material which initially absorbs some of the fuel film and facilitates its evaporation. The layer 12 may be formed of a sintered material and the combustion chamber may be formed in the piston or cylinder head. Specification 749,825 is referred to.
Patent GB-530518-A (GB)
Title: Improvements in and relating to the manufacture of waterproof pavements, roofs, floors and the like
IPC: E01C3/06
Filed: 1939-06-09
Abstract: 530,518. Waterproof paving and the like. RANSON, W. B. June, 9, 1939, No. 16966. [Class 20 (iv) ] Waterproof pavements, floors, roofs, and the like are formed by applying to the base a a coating b of hot bitumen into which, whilst still liquid, is rolled a layer c of bitumenized felt &c. these alternating layers being, repeated (as at d, e) with a top layer f of bitumen. A wearing surface g of cement or pre-cast slabs may be applied, dilatation and expansion joints h, i being provided as shown. Specifications 389,668, 431,351 and 467,425 are referred to.
Patent GB-152116-A (GB)
Title: Improvements in dies
IPC: B21J13/02
Filed: 1919-07-07
Abstract: 152,116. Parsons, Sir C. A., Cook, S. S., Carnegie, A. Q., Ford, J., and Bone, M. July 7, 1919. Turbines.-Turbine blades are made by an operation of squirting and drop forging. The blade 11 is squirted as shown and the base thereof forged by the upper members of the die. The base may be afterwards machined.
Patent GB-1190534-A (GB)
Title: Electrochemical Grinding Wheel.
IPC: B24D18/00
Filed: 1968-04-09
Abstract: 1,190,534. Abrasive wheels. NORTON CO. 9 April, 1968 [18 May, 1967], No. 17039/68. Heading C4V. [Also in Division C7] An electrically conductive grinding tool is prepared by mixing finely divided electrically conductive powder with ceramic bonding material having a lower melting-point than the conductive powder, and combining a wetted abrasive, with the mixture and moulding the overall mix to shape and firing at a temperature below the melting-point of the conductive powder. The conductive material may be silver or copper. The ceramic bonding material may be a composition of metallic oxides, and clay, a composition of clay and glass, or sodium carbonate or boric acid and the abrasive may be silicon carbide.