baber/WOPTO huggingface dataset:
Patent GB-872966-A (GB)
Title: Improvements in and relating to the manufacture of semiconductor devices
IPC: H01L21/288
Filed: 1960-02-08
Abstract: 872,966. Semi-conductor devices; electrolysis. PHILCO CORPORATION. Feb. 8, 1960 [Feb. 6, 1959], No. 4383/60. Classes 37 and 41. A semi-conductor crystal, e.g. for use in a point contact diode, is conductively bonded to a supporting member by alloying a metal into the crystal, juxtaposing the crystal and the supporting member, and electroplating on to adjoining portions of crystal and member a metal which bonds them together. In the described embodiment, wafers of gallium arsenide are bath-plated with indium which is subsequently alloyed into the wafers by heating in an atmosphere of 90% N, 10% H at 250 C. for 1 hour or at 400 C. for 20 minutes, excess indium being removed by etching the wafers with dilute hydrochloric acid. The wafers are then cut into crystals 10, Fig. 3, each of which is placed in contact with a stud 11, e.g. of nickelplated brass, and bonded thereto by electroplating a coating 12 of nickel on to adjoining surfaces of crystal and stud to form a lowresistance ohmic bond. Excess nickel plate is removed by grinding, and a flash coating 13 of silver is applied to the nickel surface to provide a skin having low resistance at microwave frequencies. The assembly is chamfered at 14, and any nickel on the free face of the crystal is removed by abrasion, after which the free face is polished. The crystal may be bath-plated with nickel prior to the electroplating process. Fig. 4 shows a number of crystals 15-18 centred in holes in a nickel anode 23 in a plastic tray 24, the crystals being engaged by studs 25-28 held in a cathode bar-jig 29, and nickelous fluoborite solution being poured into the tray to the required depth. A plating current of about 1 mA. per stud is applied via leads 30, 31 for about 6 hours.
Patent GB-1307391-A (GB)
Title: Dithios their preparation and compositions made from them
IPC: C07C67/00
Filed: 1970-01-29
Abstract: 1307391 Dithiols SOC NATIONALE DES PETRQLES D'AQUITAINE 29 Jan 1970 [31 Jan 1969] 4387/70 Heading C2C [Also in Divisions C1 and C5] Novel dithiols of formula HS-R-S*(CH 2 ) 3 -O-CH 2 -O-(CH 2 ) 3 -S-R-SH where R is a C 1-10  divalent radical, are prepared by reacting HS-R-SH with diallyl formal. R may be a substituted or unsubstituted aliphatic, cycloalkylene or aromatic radical and may include at least one thioether group. The products are used in plasticizing S. Diallyl formal is prepared from allyl alcohol and trioxymethylene.
Patent GB-1016761-A (GB)
Title: Structural materials
Inventor: ECKERSALL GEORGE MONTAGU NIXON
IPC: B29C44/18
Filed: 1961-02-06
Abstract: A method of restoring defective timber or plaster in an established building comprises forming, in situ, within a cavity in a deficient timber or plaster member of the building or between such a member and another structural member a rigid expanded polyurethane or extended poly-epoxide resin, permanently adherent to the member or members and filling the cavity, optionally encased with resin-bonded glass fibre reinforcement.  As specific applications the following are given: (A) An internally rotted timber is hollowed out, lined with resin/glass and filled with foamed resin. (B) Resin/glass members are substituted for destroyed timbers, joined by lay-ups to retained timbers, the edges are sealed and the cavity is filled with foam.  (C) Collapsible or complete resin/glass structures are preformed to repeat the section of timbers the ends or external surfaces of which are rotted. They are fixed to the stumps of the original timbers and filled with resin; (D) A new end is prepared for a timber member by holding new and old timbers one inch apart, filling the gap with resin, laying up with resin glass bandages around the whole joint.  In another embodiment plaster work, particularly ceilings which have become weakened by fungal or insect attack are strengthened by applying foaming material to the back surface, a restraining material such as woven fibre glass being used to hold the foam until it cures.  The bulk element used for filling the cavities may be (a) a rigid polyurethane foam produced by reacting a polyester or polyether with an isocyanate and water or (b) a polyurethane or polyepoxide with added hardeners, extenders such as tar oil, mineral fillers to improve the workability and impart self-extinguishing properties, lightweight mineral or vegetable aggregates to form a resin in which voids are filled with aggregate particles, and fibrous material.
Patent GB-677601-A (GB)
Title: Improvements in and relating to rubber pads for abrasive machines
IPC: B24D15/04
Filed: 1948-02-21
Abstract: 677,601. Shoes for abrasive machines. SYMONS, P. E. Feb. 10, 1949 [Feb. 21, 1948], No. 4507/51. Divided out of 677,514. Drawings to Specification. Class 60. [Also in Group V] The Specification describes the same rubber pad as that described in Specification 677,514.
Patent GB-1375175-A (GB)
IPC: B60G17/005
Filed: 1972-02-09
Abstract: 1375175 Adjusting vehicle suspension height SEB TRAILERS UK Ltd 9 Feb 1972 [12 Feb 1971] 4521/71 Heading B7D [Also in Division B8] In a trailer or semi-trailer having a load platform which can be lowered or inclined to a position in which a load may be driven or rolled on and off, each road wheel 8 is rotatably mounted on an arm 5 pivotally connected to a side member 7, an hydraulic ram 9 is connected between the arm 5 and the extremity of a leaf spring 12, and a mechanical locking device 16 for maintaining the ram 9 in the extended position comprises an arcuate element 15 which is pivotally mounted so as to drop over the pistonrod 11 of the ram and can be swung clear by means of a handle 18. Hydraulic fluid is supplied to the rams 9 to raise the load platform by operating a hand pump, and is released to lower the platform by a manually-operated valve. The locking devices may alternatively be power actuated and the pump may be power driven.
Patent GB-808954-A (GB)
Title: Ferritic alloys and methods of making and fabricating same
IPC: C22C37/10
Filed: 1955-02-15
Abstract: A cast alloy having a composition within the following range in per cent by weight has an equianed, fine grain structure resulting from casting under reduced pressure of an inert gas, controlled cooling and subsequent annealing, Al 10-18, Mo and/or Ti 1-5, Fe and impurities the balance.  The alloy may be made in a magnesium oxide crucible with induction heating, Fe and Mo being melted together under a pressure of about 200 microns.  The melt is decarburized with wet hydrogen and then deoxidized with dry hydrogen.  The hydrogen atmosphere is replaced by helium and then vacuum to remove dissolved gases.  After replacement of the helium atmosphere Al is added to the melt and the chamber is again evacuated prior to pouring into the mould e.g. at a pressure of 5 mm.  Casting may be effected in a steel slab mould or in a sand or ceramic mould.  The cast metal is annealed at a temperature of 600-1100 DEG C and then slowly cooled, e.g. at a rate of about 30 DEG C. per hour, down to a point where thermal stresses due to more rapid cooling would be negligible, e.g. to room temperature or to 100 or 200 DEG C.  The alloy may then be cold rolled, reheated to a temperature of 1000 DEG C.-1200 DEG C. and cooled in still air to room temperature.
Patent GB-1374692-A (GB)
Title: Electric current comverter control system
IPC: H02M7/162
Filed: 1972-02-01
Abstract: 1374692 Automatic control of converters  ALLMANNA SVENSKA ELEKTRISKA AB 1 Feb 1972 [2 Feb 1971] 4572/72 Heading G3R A converter has an inductive D. C. load and includes a number of controlled rectifiers. The load current is sensed during each rectifier commutation interval and used to calculate the current which would be obtained in the next interval if the next rectifier were to be fired at the moment of calculation. The calculated current is compared with a reference, and the next firing pulse is produced when equality is reached. In the circuit shown, a D. C. motor M is supplied through rectifiers 1-6 from A. C. lines RST. Firing pulses for the rectifiers are supplied in a desired commutation sequence by a circuit SD in response to trigger signals U s . The converter current is measured by a transformer T1, producing a current-proportional voltage signal -I sv . The rate of change of the converter current dI/dt is sensed by an air-gap transformer T2, so that a zero signal is supplied to a NOR gate N1 each time the current is a maximum. This causes a pulse generator PG to energize a relay RE or switching transistor and close a contact Kl for a short time. This sets the output of an amplifier F1 at a value determined by the converter current and a supply U 1 . When the relay turns off, contact K2 is closed, and the amplifier output decreases linearly at a rate set by a supply U2, to produce a voltage I pred  indicative of the maximum current which would be produced in the following commutation interval. The voltage I pred  is compared in an amplifier F2 with a reference voltage I ref , and when these are equal, trigger signal U s  is produced to fire the next rectifier in sequence. The response time of the system may be improved by generating the predicted current signal before the current maximum is reached to enable larger current changes between successive intervals to be made, Fig. 7 (not shown).
Patent GB-175637-A (GB)
Title: Improved process and apparatus for sifting or screening materials
IPC: B07B7/06
Filed: 1922-02-16
Abstract: 175,637. Soc. Anon. du Chocolat Moreuil, (Assignees of Vicongne, A.). Feb. 16, 1921, [Convention date]. Fixed seives.-Consists of a screening process and apparatus, in which the sieve is fixed, the material to be sifted being thrown against the sieve by a blower into which the material is introduced, the finer particles thus passing through the sieve into a chamber provided with receptacles whilst the coarser particles fall into a receiver, a bulb being provided to allow the air to escape from the chamber. The material passes to the blower 1 from a pipe 8 and is blown up the pipe 2 on to the sieve 3. The finer particles pass through the sieve and are collected in a series of bags 6 whilst the coarser particles fall into the bag 5<1> the air passing through the chamber 4 and escaping through a pipe provided with a bulb 7 which facilitates the extraction of any dust suspended in the air.
Patent GB-960462-A (GB)
Title: Decrating machine
Inventor: EARL ALBERT CHRISTOPHER
IPC: B65B21/18
Filed: 1961-02-08
Abstract: 960,462. Bottle de-craters. THOMAS & EVANS Ltd. Feb. 8, 1962 [Feb. 8, 1961], No. 4692/61. Heading B8H. A bottle de-crater consists of a plurality of pairs of pivoted jaws, each jaw having a plurality of arcuate recesses for accommodating the necks of a row of bottles. Each pair of jaws 1 is operated by vertical movement of a plunger 8, the plungers of all the pairs of jaws of the complete apparatus being connected to a plate 6, Fig. 1 (not shown), which is raised and lowered by a valve-controlled pneumatic motor to operate all the jaws simultaneously.
Patent GB-100393-A (GB)
Title: Improvements in Gyroscopic Steering Mechanism.
IPC: F42B19/01
Filed: 1916-03-30
Abstract: 100,393. Bliss Co., E. W., (Assignees of Dieter, W.). May 1, 1915, [Convention date]. Gyroscopic apparatus. - Relates to gyroscopic steering-gear capable of steering the torpedo, first in a curved path, and then in a straight line at an angle to the initial direction, and consists in mounting the gyroscope itself and its spinning- gear so as to be capable of adjustment in azimuth to the angle required relatively to the axis of the torpedo, the axis of the torpedo regaining parallelism with the axis of the gyroscope when the straight course is reached. In the form shown in Figs. 4 and 5, the gyroscope comprises more or less as usual (1) a rotor B with gimbal rings D, E, (2) a cam e on a disk G on the ring E, (3) a pallet d and tappet h on a slide H reciprocated by an eccentric I driven by a countershaft J<1> from the torpedo-propelling engine, (4) a pair of pivoted interconnected elbow-levers j, k co-acting with the tappet h and controlling by means of link work m, n, o, the valve p of the steering cylinder K, the piston of which is connected to the rudder by means of a rod r, (5) a locking-pin P, and (6) a spinning-gear constituted by a pinion s on the rotor spindle a<1>,a pinion t on a countershaft L, a turbine M on the shafs L, and a nozzle N for the turbine supplied by a pipe u. According to the invention, the gyroscope and the spinning- gear are'carried by a casing Q capable of being rotated about a vertical axis relatively to the rest of the apparatus by means of a worm R, the spindle R<1> of which projects outside the torpedo. The pipe u is connected to a stuffing-box U on the fixed part of the apparatus in the axis of rotation of the casing Q and receives its supply through a radial pipe u<1> from a pipe U<1> connected to the motive-fluid supply of the torpedo. The lower end of the casing Q is closed by a plate V secured tightly in place by a screw V<1> in a disk V<2> attached by a rotation to the frame W of the apparatus.
Patent GB-835358-A (GB)
Title: Improvements in and relating to mineral-mining machines
IPC: E21C27/26
Filed: 1958-02-14
Abstract: 835,358. Mineral mining machines. JOY MANUFACTURING CO. Feb. 14, 1958 [March 5, 1957], No. 4856/58. Class 68(1) In a mineral mining machine in which a cutter head 9, e.g. a structure involving parallel, endless cutter chains mounted in vertical planes, is secured on a support structure 8 reciprocably mounted in horizontal, radially extending guides on a turntable 4 on a mobile chassis 1, mineral is removed from the cutter head to the rear of the machine by a scraper conveyer 16. The troughing of the conveyer is in three sections 61, 62, 67. The front section 61 is supported from and moves with the cutter head-support structure 8. The rear section 62 is so mounted on the chassis 1 that it may be linearly reciprocated thereon. The middle section 67 is pivotally attached about vertical axes 70, 68 to each of the adjacent end portions 63, 64 of the front and rear sections 61, 62 so that as the controlled movement of the sections 61, 62 occur pivotal movement of the middle portion occurs with respect to the other portions at both axes 68, 70 so that the resultant change of curvatures through the troughing is minimized. The scraper paddles 60 and mineral are guided across the middle section by flexible upstanding walls 72 secured at the middle 73 only to the middle section, the free ends having sliding engagement in guides 74 secured to the fixed walls of the side walls af the other sections 61, 62. Specification 681,364 and 681,365 are referred to.
Patent GB-586598-A (GB)
Title: Process of stabilising textile material
IPC: D06M15/347
Filed: 1944-03-16
Abstract: Textile material formed predominantly of regenerated cellulose is stabilized against shrinkage under repeated laundry washings, by treating it with an aqueous solution containing the equivalent of 15-120 c.c. of 30 per cent by weight glyoxal solution and 0.125-4 grams of an acidic catalyst per litre of treating solution, and polyvinyl alcohol in an amount sufficient to produce the desired finish and stiffness of the material, and baking the treated textile material at a temperature of 212-350 DEG  F. for 40-2 minutes so as to effect a reaction between the glyoxal and the fibres of the material.  The material may be in the form of fibres, yarns or fabrics.  The treatment may also impart resistance to creasing and crushing.  Small proportions of amino-aldehyde water-dispersible thermosetting resins may be incorporated in the treating solution. Urea-formaldehyde, butyl urea-formaldehyde and melamine-formaldehyde are specified.  In an example, a mixed fabric containing viscose rayon and cellulose acetate rayon is impregnated with an aqueous solution of glyoxal, oxalic acid, polyvinyl alcohol and urea-formaldehyde.  The fabric is squeezed, dried on a tenter frame at 180 DEG  F. and cured in a tenter oven or loop drier oven in circulating air at 280 DEG  F.  The fabric is soaped, rinsed and dried.  In another example, the impregnating solution contains urea - formaldehyde and melamine-formaldehyde as well as glyoxal and polyvinyl alcohol. Another example describes the treatment of a mixed fabric containing spun viscose fibres and casein fibres. Specifications 585,679 and 586,637 are referred to.  The Specification as open to inspection under Sect. 91 describes also the treatment of textile materials formed of cotton, linen, casein, soya bean protein and other fibres.  This subject-matter does not appear in the Specification as accepted.
Patent GB-252261-A (GB)
Title: An improved piston or packing ring with sealing piece and spring
IPC: F16J9/14
Filed: 1925-02-24
Abstract: 252,261. Barlow, H. G., and Turtle, V. L. Feb. 24, 1925. Piston packings.-In a split-packing ring, of the type having the gap closed by a wedge-shaped block b, and having eccentric inner and outer peripheries an obtuse-angled block b is employed the base of which is accommodated in the segmental space between the packing-ring and the piston body. The block b may be pressed outwards by a split spring ring c, by a leaf-spring having a peg engaging a hole in the block b, or by a spring housed in a radial pocket in the piston. The block b may have flanges b<1> at one or both sides, or a middle rib, engaging recesses in the ends of the piston ring.
Patent GB-1479991-A (GB)
Title: Two source radiant fuser for xerographic reproducing apparatus
IPC: G03G15/20
Filed: 1975-02-06
Abstract: 1479991 Heat fuser for toner images XEROX CORP 6 Feb 1975 [25 Feb 1974] 5119/75 Heading G2H A radiant fuser for fixing toner images to copy substrates comprises two sources of radiant energy, one of said sources being arranged to fuse low density images without fusing background toner particles and comprising a low mass member capable of rapid temperature increases and operating at 800‹C. The other said source may comprise a quartz lamp operating at 2400‹K which may additionally heat an energy absorbing and reradiating means which acts as the said one source.
Patent GB-1223225-A (GB)
Title: Improvements in photographic materials
IPC: G03C1/34
Filed: 1969-01-30
Abstract: 1,223,225. Aldehyde-bisulphite addition compounds. KONISHIROKU PHOTO INDUSTRY CO. Ltd. 30 Jan., 1969 [31 Jan., 1968] No. 5122/69. Heading C2C. The sodium bisulphite compounds of n-hezyl aldehyde and 3 : 4 - dihydroxy - benzaldehyde are made by allowing sodium bisulphite to react with the aldehydes in aqueous or aqueous alcoholic solution followed by refluxing.
Patent GB-659796-A (GB)
Title: Method and device for transforming waves of audible, ultra-audible or infra-audible frequencies into modulations of an electric current, and conversely
IPC: H04R23/00
Filed: 1945-03-01
Abstract: 659,796. Microphones ; loud - speakers. KLEIN, S., and COMPTOIR DES CENDRES ET METAUX PRECIEUX. March 1, 1945, No. 5124. [Class 40 (iv)] [Also in Group XL (a)] Apparatus for transforming acoustic vibrations into modulations of an electric current or vice versa comprises an electrode 1 emitting positive ions and a co-operating electrode 4, the acoustic vibrations passing through the space between the electrodes and acting on, or being acted on by, the stream of free ions. Electrode 1 may be provided with a heater 3 and the terminals 6 and 7 to be impressed with the electric oscillations are connected across a resistance 6 in series with electrodes 1 and 4. Electrode 4 may be coated with insulating enamel in which case the electrodes 1 and 4 mainly function together as a capacity. The electrode 1 may be a thermionic emitter of positive ions as described in Specification 657,032, [Group XL (a)].
Patent GB-538975-A (GB)
Title: Improvements in and relating to crowning machines for bottles and the like
IPC: B67B3/062
Filed: 1940-03-19
Abstract: 538,975. Applying crown corks. FLOWER, Sir N., CRIBB, R. W. E., and BROOKS, J. L. March 19, 1940, No. 5139. [Class 125 (ii)] In a multi-head crowning machine for bottles and the like with travelling heads having substantially horizontal cork channels successively fed with crown corks from a stationary shoot 16, the channel 12, 13 in each head is of sufficient length to receive at least one crown cork in addition to the cork in crowning position, and a crown cork trapping device is arranged adjacent the mouth of the channel which permits the free entry of the corks into the channel but prevents the exit .of the corks through the mouth thereof. As shown a catch 14 which prevents the exit of the extra cork is moved at intervals, e.g. by engagement with the shoot 16, to permit the free entry of the corks. The mouth of the passage 12 is flared. The flange 6 holding the throat piece 5 in place is secured to the head of the machine, e.g. by bayonet &c. slots and bolts 8, 9 so as to be readily detachable, and is so shaped that it forms a segment of the rim of the head as shown in Fig. 2. Specification 468,370 is referred to in the Provisional Specification.
Patent GB-190945-A (GB)
Title: An improved arrangement and means for the stepwise variation of the output of multi-cylinder plunger pumps and compressors
IPC: F04B49/24
Filed: 1922-02-22
Abstract: 190,945. Silvestri, G. Feb. 22, 1922. Multiple - delivery piston pumps; regulating delivery by opening suction valves; regulating delivery of two or more combined pumps; valves, arrangement of.-In a multiple-cylinder pump in which the cylinders and suction, valves are disposed in radial groups , the cylinders are, adapted to be cut out of action in succession by the stepwise rotation of means which held the suction valves continually open. The pump comprises two parallel sets of radial cylinders, the pistons of which are driven by two cranks on a shaft W, and the suction valves Vs of the two sets of cylinders are in the same radial plane, and open into chambers Sv, Sr communicating, respectively, with the two sets of cylinders. The delivery valves V<d> are also in one plane and open into a delivery chamber P. The stems M of the suction valves rest in cam recesses in the periphery of a disc N, which may be rotated by a handle h carrying a pointer moving over a scale p. The cam recesses are of different lengths, as shown in Fig. 4, so that ,as the disc N is gradually rotated, the valve stems are successively lifted on to the raised portions of the periphery and the valves are opened. If more than one group of suction valves are used, a corresponding number of discs N are used.
Patent GB-198043-A (GB)
Title: Improvements in cooking and like ovens or stoves
IPC: F24C15/32
Filed: 1922-02-23
Abstract: 198,043. Oakley, P., and Stoves, Ltd. Feb. 23, 1922. Cooking-stoves; ovens.-A cooking-stove comprises an oven i located within an cuter casing k, a h-eating-chamber f being formed at one side which communicates with the interior of the oven by apertures n controlled by slidable, rotatable, or hinged dampers o which are operable from outside the casing by means of handles q. The chamber f is heated by an oil stove or a gas or oil burner placed beneath the aperture h in the bottom. The wall a of the heating chamber is trough-shaped in horizontal section, and directs the gases to the flues b at the top, bottom, and one side of the oven and through the openings n. Asbestos or like packing j is placed between the wall a and the outer casing k, the other sides of the casing being also lined with similar material. Pot-holes c with covers e are provided in the top of the stove.