baber/WOPTO huggingface dataset:
Patent GB-799901-A (GB)
Title: New azo dyes and wood stains containing the same
Inventor: JR HARRY AUBREY TOULMIN
IPC: B27K5/02
Filed: 1955-08-09
Abstract: An azo-dye is produced by coupling a diazotized primary aromatic amine with a flavanone derived from citrus material, e.g. naringenin, hesperetin and eriodictyol.  The diazo component may contain at least one substituted benzene nucleus or a hydroxy naphthalene nucleus: diazotized aniline, 1-naphthylamine-4-sulphonic acid, 2-amino-8-naphthylamine-4-sulphonic acid, p-nitroaniline, and sulphanilic acid are used in examples.  Aqueous solutions of the dyes, to which may be added optical brighteners, may be used as wood stains; specified optical brighteners include coumarin, stilbene and amino - naphthalene derivatives, hydroxycoumarin, 1 - naphthylamine - 4 - sulphonic acid, sodium 2 - naphthylamine - 6,8 - disulphonate, dibenzoylaminostilbene - sulphonic acid salts; naphthalene; benzimidazoles such as 2-styryl benzimidazole or 1-(m-acetamido-2-benzimidazole) - 2 - (p - acetamidophenyl)-ethylene; triazine condensation products; 2,21-ethylene - bis - (1 - benzylbenzimidazole); o-alkoxy-benzoyl and other derivatives of 4,41-diaminostilbene 2,21 - disulphonic acid; betamethyl - umbelliferone; 4 - methyl, 7 - diethylamino coumarine; styryl benzimidazole; and an amino-naphthalimide derivative as described in U.S.A. Specification 1,836,529.ALSO:An azo-dye is produced by coupling a diazotized primary aromatic mine with a flavanone derived from citrus material, e.g. naringenin, hesperetin and eriodictyol. The diazo component may contain at least one substituted benzene nucleus or a hydroxy naphthalene nucleus: diazotized aniline, 1-naphthylamine-4-sulphonic acid, 2-amino-8-naphthol-4-sulphonic acid, p-nitroaniline and sulphanilic acid are used in examples. Aqueous solutions of the dyes, to which may be added optical brighteners, may be used as wood stains; specified optical brighteners include coumarin, stilbene and aminonaphthalene derivatives, hydroxy-coumatin, 1 - naphthylamine - 4 - sulphonic acid, sodium 2 - naphthylamine - 6,8 - disulphonate, dibenzoylaminostilbene - sulphonic acid salts; naphthalene; benzimidazoles such as 2-styryl benzimidazole or 1 - (m - acetamido - 2 - benzimidazole) - 2 - (p - acetamidophenyl ethylene; triazine condensation products; 2,21 - ethylene - bis - (1 - benzylbenzimidazole; o - alkoxybenzoyl and other derivatives of 4,41-diaminostilbene 2,21-disulphonic acid; beta-methylumbelliferone; 4 - methyl, 7 - diethylamino coumarin; styryl benzimidazole; and an amino-naphthalimide derivative as described in U.S.A. Specification 1,836,529.  The optical brightener, dissolved in an appropriate solvent, may be applied to the wood before staining.
Patent GB-1488570-A (GB)
Title: Piston pump
IPC: F04B53/16
Filed: 1975-05-27
Abstract: 1488570 Reciprocating pumps LIQUID CONTROL Ltd 25 May 1976 [27 May 1975] 23106/75 Heading F1A A pump, e.g. for viscous materials, comprises a cylinder 5 with a valve-controlled outlet 12 and an inlet 2, and a piston assembly 9 movable from its inlet-opening position shown into the cylinder on its discharge stroke, and comprising a head member 23, e.g. of nylon with a flexible skirt 24 and apertures 25, and a sealing member 27 with a knifeedge 29 sealingly engageable with head member 23 to close apertures 25, the head member being axially movable by contact with cylinder 5 or cylinder pressure to open and close apertures 25. Cylinder 5 is located in body 1 by grub screws 6, has a chamfer 8 for receiving skirt 24; and may be coated internally with P.T.F.E. Several pumps may be operated by a common drive at different strokes.
Patent GB-921921-A (GB)
IPC: G03B17/34
Filed: 1959-07-06
Abstract: 921,921. Photographic apparatus and film units therefor. INTERNATIONAL POLAROID CORPORATION. July 6, 1959 [July 16, 1958], No. 23146/59. Drawings to Specification. Class 98 (1). As described in detail with the aid of 23 Figures (not shown) the apparatus includes a camera containing a product comprising a plurality of film units in a casing therefor, each unit having separate photo-sensitive and imagereceiving sheets mounted on a connecting element which is provided with a container for processing fluid, normally to produce after exposure a positive image on the receiving sheet, and which connecting element carries also a leader strip projecting out of the casing but contained within the camera itself, while the camera has an exterior actuator connected to interior mechanism to engage and advance the leaders successively between a pair of pressure rollers in the camera and then out through an opening in the camera housing, the advancement being a greater distance than that which the actuator is moved. A leader so placed outside the camera may then be pulled to cause release of the fluid and the transferprocessing. A main advantage of the invention so described is that the leaders of the film units are contained within the housing until it is desired to use them. In broader terms the invention includes apparatus comprising the housing with its actuator mechanism alone, and also film units and self-developing film units of the type indicated above, and the casing containing a plurality of the units. Specifications 684,592, 714,412 and 921,928 are referred to.
Patent GB-232643-A (GB)
Abstract: 232,643. Richardson, C. W. July 24, 1924. Two or more barrels in series valves and valve seats, arrangement of.-A rotary conical valve for a lubricating plunger pump has three substantially radial ports for each cylinder the port c<1> being always in communication with the cylinder, the ports d<3>, d alternately communicating with the discharge and suction passages respectively. The valve is oscillated by a forked lever a<3> engaging the extension h<3> of the sheave of the eccentric actuating the plungers. In the form shown in Fig. 11 the, oil is pumped by a plunger h<1> to a sight feed from which it is pumped by the plunger h<2> to the desired point.
Patent GB-838531-A (GB)
Title: An electric liquid jet current converter
IPC: H02M1/30
Filed: 1956-07-27
Abstract: 838,531. Mercury and other conducting liquid switches. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. July 27, 1956 [July 27, 1955; Aug. 18, 1955; Dec. 17, 1955], No. 23285/56. Class 38 (5). [Also in Group XXXV] A centrifugal jet converter has two or more symmetrically-arranged jets with a circle of fixed contacts such that at least one but not more than half of the jets are directed against fixed contacts at one time, but if the converter is arranged for commutation one more jet is directed against a fixed contact during the commutation period. The invention can be applied to a known converter (Fig. 1) with an electric motor 3 driving a shaft 4 carrying two jet arms 7, 7<SP>1</SP> on a head 6 in a mercury pool 8. The jets strike fixed contacts 15 supported by insulators 18 on a plate 10. Numerous arrangements are described with two, three, or four jets and with the gaps between the contacts at least equal to the length of the contacts. In Fig. 4, for example, four jet arms 71 ... 74 are spaced at 90 degrees and each contact 31, 32 extends through 45 degrees for use as a single-phase full-vane rectifier. An alternative position for the contact 32 is shown by dash-lines. In Fig. 6, a six-phase arrangement is shown with the contact for one phase sub-divided in two parts 44, 47. In Fig. 13, the contacts are arranged to overlap electrically for commutation and are connected to transformer windings in two-star formation with an interphase choke 92, the corresponding windings 81<SP>1</SP>, 84<SP>1</SP>, &c. being wound on the same limb of the transformer. With one set of star-connected windings reversed the star-points may become the D.C. terminals (Fig. 14, not shown).
Patent GB-449284-A (GB)
Title: Improvements in or relating to mercury or other conducting liquid electric switches
IPC: H01H29/16
Filed: 1935-08-19
Abstract: 449,284. Mercury switches; electromagnetic switches AKTIEBOLAGET HG. RELAY PATENT, 18, Norrlandsgatan, Stockholm. Aug. 19, 1935, Nos. 23299 and 23300. Convention dates, March 8 and May 25. [Class 38 (v)] In mercury switches in which the electrodes dip permanently into the mercury, circuit is broken by means of an insulating cup which is moved to divide the body of mercury between the electrodes without substantially displacing the bulk of the mercury. As shown in Fig. 1, an evacuated glass envelope 1 containing a quantity of mercury has an electrode 2 which is forked at its upper end to provide bearings for an insulating cup 6 into which dips an electrode 3. The cup 6 is connected to an armature 17 which can be drawn up by a coil 15 so as to tilt the cup 6 and allow the bodies of mercury inside and outside the cup to flow together and complete the circuit between the electrodes 2, 3. In a modification, a float is fixed to one side of the cup 6 which is thus tilted and the circuit is normally made. On energization of the coil 15, the armature 17 is drawn down to break the circuit. In another modification, the cup 6 carries a ridge-shaped cam on its upper side and the armature 17 carries a depending stem which on being raised and lowered due to a short current impulse applied to the coil 15 falls on one or other side of the cam to tilt the cup in one direction or the other to operate the switch, which then remains in its operated position. In a further modification, the electrode 3 is made of molybdenum and depends centrally from the upper end of the envelope 1 and the armature 17 is in the form of a hollow cylinder slidable on the electrode 3. In another modification, the cup 6 floats in a tilted position due to a float on one side and the armature carries a depending conical insulating extension which, on deenergization of the coil 15 presses on the cup turning it to its horizontal position to break the circuit. In the modification shown in Fig. 20, the cup 6 is pivoted between an electrode 2 outside the cup, and an electrode 3 entering a tubular extension 13 which carries an armature 44 which, on attraction by a coil 15 rotates the cup and allows the two bodies of mercury to meet at an orifice 45.
Patent GB-817953-A (GB)
Title: Electrical method and apparatus
IPC: H01L21/00
Filed: 1955-08-12
Abstract: 817,953. Semi-conductor devices. PHILCO CORPORATION. Aug. 12, 1955 [Aug. 12, 1954], No. 23300/55. Class 37. [Also in Group XL (b)] In the manufacture of semi-conductive devices which are to have a portion of predetermined thickness use is made of the fact that the lower transmission limit of wavelength of the semi-conductive device changes with thickness. Thus the various curves shown in Fig. 2a represent transmittance of a germanium wafer plotted against wavelength for different thicknesses a-f. As shown, Fig. 1, radiation from a source 22 having an intensity-wavelength characteristic, as shown in Fig. 2b, is chopped by rotating shutter 28 and reflected by a mirror 26 through an etching jet 15, the plate 10 being etched, a hole in a mounting plate 16 and on to a light-sensitive cell 32. The etching jet 15 is supplied by a pump 11 and the etching current through the jet by a battery 18, rheostat 19 and switch 20. The transmittance characteristic of the electrolyte is as shown in Fig. 2c and varies with its length. As shown in Fig. 2d the upper limit of the electrolyte transmittance overlaps the lower limit of the semi-conductor being etched. Thus as etching progresses and the semi-conductor thickness falls from c-d-e the output of photo-diode 27 will increase rapidly when the thickness becomes such that the pass-band of the germanium overlaps that of the electrolyte. Photo-diode 27 is such as to respond to substantially all the wavelengths in use (Fig. 2e). The electrical impulses produced by the photo-diode since the incident light is " chopped " are amplified, detected and indicated, the commencement of the steep increase in output being used either to terminate the etching or to slow it down so as to terminate it at any particular point on the output. An arrangement is described (Fig. 4, not shown) in which a particular valve of the output of the amplifier fires a thyratron which in turn operates a relay to cut off the etching current. The jet acting as a filter may be on the opposite side of the germanium wafer and other means may be used to limit the wavelengths detected such as a photo-cell embodying a low-pass filter characteristic. Although described with reference to germanium, the invention may be used in the production of silicon devices. Specification 805,291 is referred to.
Patent GB-536489-A (GB)
Title: Method of and means for the production of knitting by mechanical means
IPC: D04B39/00
Filed: 1939-11-12
Abstract: 536,489. Knitting-machines. SMITH, H. N., and SMITH, E. E. Aug. 12, 1939, Nos. 23342/39, 32843/39 and 12558/40. [Class 74 (ii)] A knitting - machine comprises a channelled loopcarrying member 4, points 108, 109 for progressively advancing the loops to bring them in succession to the channelled end portion of the member 4, and looping means 10, 11 to form a new loop and carry it through the channel and the loop encircling the channel and to deliver it to the pointed end of a second member 5. In one form each of the members 4, 5 is a helix having a pointed end and the two members are rotated in opposite directions, so that the member 4 can cast its loops off its pointed end and so that the pointed end of the member 5 can penetrate the loop held by the looper 10, 11. A thread guide 32 is provided and can be moved from the position shown, Fig. 17, in which it co-operates with the looper 10 to form plain fabric, to a position above the member 4 so as to co-operate with the looper 11 to form purl fabric. In a second form, the members 4, 5 are cylindrical pronged or comb members, each prong of the comb being channelled. Points 110, 111 are provided for advancing the loops held by the receiving member 5 progressively along that member, and transfer points, not shown, having tapered ends are provided for transferring loops from the remote end of the member 5 back to the remote end of the member 4 when it is desired to make tubular fabric. When flat fabric is required, means are provided for reversing at intervals the direction of rotation of the members 4, 5, and the loopers 10, 11 form the new loops first within the channel of one member, and then, after the knitting of a course, within the channel of the other member.
Patent GB-1461655-A (GB)
Title: Integrated circuit
IPC: H01L27/06
Filed: 1974-05-24
Abstract: 1461655 Integrated circuit resistors PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 May 1974 [30 May 1973] 23346/74 Heading H1K An integrated circuit resistor formed by a part 4b of an island defined in an epitaxial layer 2 by the substrate 3 and isolation walls 6, both of which are of opposite conductivity type to the epitaxial layer 2, is at least partly bounded at the surface by a boundary zone 10 of the same conductivity type as, and continuous with, the isolation walls 6 but extending in depth only part of the way through the epitaxial layer 2. It is stated that this facilitates more accurate control of the resistance value of the epitaxial island part 4b. The boundary zone 10 is preferably, as shown, divided into two portions 10a, 10b, one on each side of an elongate part 4b of the epitaxial island. The zone 10 may be diffused or implanted. Other circuit elements such as transistors, capacitors or diodes may share the same island as the resistor, the base region, in the case of a transistor, being formed simultaneously with the boundary zone 10. In one embodiment a transistor is located half-way along an elongate resistor region, its collector effectively forming a centre tap of a voltage divider.
Patent GB-255267-A (GB)
Title: Improvements in cross-winding machines for textile threads and yarns
IPC: B65H54/32
Filed: 1925-09-18
Abstract: 255,267. Schweiter, H., and Maschinenfabrik Schweiter, Akt.-Ges. Sept. 18, 1925. Winding-machines. - In cross - winding machines provided with automatically variable traverse mechanism and in which the spindle and the cam drum are driven at a constant speed, the reciprocating thread guide or a member connected thereto actuates mechanism to impart axial movement to the cam drum, so that the traverse of the guide is varied to produce tapered or bulged bobbins. A cam drum 4 oscillates the guide bar 1, and is oscillated along its shaft by a rod 19 secured to a lever 14 which is operated by a bracket 5 on the bar 1. The bracket 5 is connected to a lever 8 the lower part of which is formed as 'a disc 7, which is slotted to receive a sliding block 10, Fig. 4, adjustably secured to the lever 14. By means of a pawl 24 on a concentric disc 23 the disc 7 gradually rotates a disc-wheel 27', which is provided with a spiral crown-thread 26 whereby it gradually lowers or raises a rack 29 which carries the pivot pin of the lever 14. The rack is returned to its initial position by a spring 33 when the disc-wheel 27<1> is removed therefrom by a lever 37, which is operated independently or by the counterhold 40 of the winding-spindle when this is withdrawn upon the completion of the winding. A bowl on an adjustable disc corresponding to the disc 23 may be arranged to operate a lever which, in one modification, operates the disc-wheel 27<1> by a friction ratchet gear, and, in another modification, operates a ratchet wheel on a screw-shaft which engages the rack 29, the screw-shaft being mounted in a pivoted yoke so that it may be disconnected from the rack.
Patent GB-700973-A (GB)
Title: Improvements in or relating to apparatus for dispensing measured quantities of liquid
Inventor: GOODMAN HUGH FREDERICK
IPC: G01F3/36
Filed: 1949-09-09
Abstract: 700,973. Delivering liquid in measured quantities. A. P. V. CO., Ltd., and UNITED DAIRIES, Ltd. Nov. 14, 1950 [Sept. 9, 1949], No 23364/49. Class 106(5) Apparatus for delivering measured quantities of liquid, such as milk, comprises at least one measuring chamber 1 with a vent 14 at the top, valve means 33 for connecting a port 26 at the bottom of the chamber to a source of supply or to a discharge outlet 41, a float 10 fitting closely in a chamber 3 communicating with the vent and operating a valve 12 to close the vent, and a full-indicating lever 17 detachably coupled to the float. The glass or metal measuring chamber 1 has a conical bottom communicating through the offcentre port 26 with a tapering conduit 27 so as to provide a smooth liquid flow and prevent foaming. The float chamber 3 is formed in a cover 4 fitted with capacity-adjusting plates 24 and the float 10 has a sealing ring 13 engaging the conical seat of the vent 14. A beaded pin 16 engages a split collar 19 on the indicator lever 17, which has a fulcrum provided by a notch 22 and pin 23 and which may be of such weight as to balance the weight of the float approximately. Two measuring chambers 30 are preferably provided and they may be interconnected so that the pressure developed in the filling chamber assists the discharge from the emptying chamber. The movement of the float may automatically operate the change-over valve 33 or may control means for locking the valve until one chamber is full. An automatic counter may be associated with the float. The outlet is fitted with a strainer and with spirally-wound flat and corrugated strips for smoothing the flow, as described in Specification 667,396, [Group XXIX], and also with a hinged drip tray 46.
Patent GB-1126998-A (GB)
Title: Digital coder
IPC: H03M1/00
Filed: 1967-05-19
Abstract: 1,126,998. Analogue to digital converters. INTERNATIONAL STANDARD ELECTRIC CORP. 19 May, 1967 [17 June, 1966], No. 23394/67. Heading G4H. In an analogue to digital converter a binary counter controls, through a decoder circuit and a plurality of current generators, the charge on the condenser which is compared with the signal voltage to obtain a signal when they are equal. The converter has a characteristic approximating to a logarithmic function, Fig. 3, Clock pulses H from source 40 are applied to a seven stage counter 10, Fig. 4. As the value in the counter increases a waveform is generated consisting of a series of straight line segments, the capacitor C being charged at a different rate to obtain each segment. Decoder 11 receiving the outputs from the three most significant stages of the counter gives a signal on one of eight leads P0-P7 connected via Or gates 12-15 to control one of the four current sources 16-19 to charge the capacitor at four different rates. The unknown signal is applied at BF and compared at 20 with the capacitor charge. At the beginning of the cycle the capacitor C is short-circuited by transistor T which is held conducting by a signal RAZ from flip-flop B7. At a count of 0000001, this flip-flop is reset and the condenser begins to charge at the lowest rate under the control of the signal on lead P0 and current source 16. At a count of 16 the condenser begins to charge at a higher rate, at 32 the rate increases again and so on to derive the curve of Fig. 3. When the condenser voltage equals the unknown voltage BF the comparator 20 gives an output which sets flip-flop 27, the next clock pulse H then causes flip-flop B9 to reset closing the gate 26. The last clock pulse H applied to store 30 causes the value then standing in the counter to be displayed. An automatic centring circuit is provided including flip-flop B7, B8, B9 and gate 22 and a time constant circuit 24. In coding speech signals, the samples will be half positive and half negative. Over an interval the most significant digit of the coded value will therefore be " 0 " and " 1 " an equal number of times. This digit is transferred via flip-flop B7 to flip-flop B8 and it applies a charge or discharge to a condenser in circuit 24 according to whether it is " 1 " or " 0 ". The value on the condenser is fed back to the comparator to shift the origin of the curve, Fig. 3, until the correct balance is achieved.
Patent GB-673782-A (GB)
Title: Improvements relating to the production of titanium dioxide
IPC: C01G23/07
Filed: 1950-09-25
Abstract: <PICT:0673782/III/1> <PICT:0673782/III/2> <PICT:0673782/III/3> Titanium dioxide of high rutile content is produced by discharging a mixture of titanium tetrachloride vapour and oxygen-containing gas into a combustion zone, the mixture being at a temperature above the dew point of the tetrachloride, but not exceeding 500 DEG C., and being introduced in at least one layer of at most 1 cm., and at least 1 m.m. thickness, and being ignited with the aid of a flame maintained by an exothermic auxiliary chemical reactor, as in the parent Specification.  The titanium chloride may be mixed with from 50 per cent of the oxygen theoretically necessary for its oxidation up to 100 per cent excess.  If a mixture containing deficiencies of oxygen is used, the balance is fed separately with the auxiliary combustion gases.  The mixture may contain an inert gas, e.g. nitrogen, carbon dioxide.  It may be produced by bubbling oxygen, &c. through the liquid tetrachloride.  The auxiliary combustion gases, e.g. hydrogen and/or carbon monoxide, hydrocarbons, and the oxygen for their combustion may be fed separately or in admixture. They may be preheated or contain a gaseous ignition catalyst, e.g. carbon bisulphide.  One burner shown comprises a number of concentric tubes through which are fed, commencing with the central tube (a) nitrogen, the titanium chloride-oxygen &c. mixture, oxygen carbon monoxide or (b) hydrogen, oxygen, titanium chloride-oxygen, &c. mixture, carbon monoxide, oxygen.  In another form, the concentric tubes are flattened.  In Fig. 5, the titanium chloride-oxygen, &c. mixture is fed through slits 13 in a core member, the auxiliary combustion gases being supplied through the outer passages 14, 15.  In another form, a circularly arranged series of bores is provided in the core.  Fig. 6, shows a number of flattened tubes 16 in the form of a star surrounded by passages 17, 18.  In Fig. 8, bores 24 in a solid cylindrical structure have positioned therein concentric tubes 22, 23.  The core members of Figs. 5 and 8 may be made of titanium or zirconium metal, or, if the temperature of the reaction gas does not exceed 300 DEG C., aluminium, otherwise the burner devices may be constructed of fused silica.