baber/WOPTO huggingface dataset:
Patent GB-638093-A (GB)
Title: Improvements in or relating to aircraft gas-turbine-engine power plants
Inventor: ELLIOTT ALBERT GEORGE
IPC: B64D15/04
Filed: 1947-08-18
Abstract: 638,093. Variable-pitch airscrews. ROTOL, Ltd. Aug. 18, 1947, No. 22928. [Class 114] Exhaust gases are led to passages in the propeller blades to prevent ice formation on the blades. Exhaust from the gas turbine power plant enters a fixed manifold 28 and from thence to a moving manifold 29 and ducts 32 to the muffs 33 surrounding the blade roots. These lead the gases to spaces 24, 25 in the blades. Additional conduits 41 lead the gases through the manifolds 30, 31 to the forward propeller. Plates 43 of part spherical shape close the aperture in the spinners 18, 19. Specifications 624,402, [Group XXVI], and 638,079 are referred to.
Patent GB-1023895-A (GB)
Title: Alcoholic compositions
Inventor: FEINSTONE WOLFFE HARRY
IPC: A61K47/10
Filed: 1964-06-03
Abstract: An alcohol gel for cosmetic or therepeutic use is produced by adding a methyl vinyl ether-maleic anhydride linear copolymer or a glycol or a polyglycol to a dispersion or solution of a carboxy vinyl polymer in ethyl alcohol and/or isopropyl alcohol and substantially neutralizing the resulting mixture with a suitable base, sufficient carboxy vinyl polymer being present to form a gel of the required consistency and sufficient methyl vinyl ethermaleic anhydride linear copolymer or glycol or polyglycol being added to reduce the stickiness and balling properties of the gel.  The polyglycol is preferably polyethylene glycol, or a polyoxy alkylene ether containing methyl side chains and terminal hydroxy groups.  The preferred glycol is propylene glycol.  When perfume is added the gel may be used as an after-shave lotion, and when 2-ethoxyethyl p-methoxy cinnamate is added the gel is used as a sunscreen gel.ALSO:An alcohol gel for cosmetic or therapeutic use is produced by adding a methyl vinyl ethermaleic anhydride linear copolymer or a glycol or polyglycol to a dispersion or solution of a carboxy vinyl polymer in ethyl alcohol and/or iso propyl alcohol and substantially neutralising the resulting mixture with a suitable base, sufficient carboxy vinyl polymer being present to form a gel of the required consistency and sufficient methyl vinyl ether-maleic anhydride linear copolymer or glycol or poly glycol being added to reduce the stickiness and balling properties of the gel.  When perfume is added the gel may be used as an aftershave lotion, and when 2-ethoxy ethyl p-methoxy cinnamate is added the gel may be used as a sunscreen gel.
Patent GB-779942-A (GB)
Title: Improvements in snap action electric switches
IPC: H01H1/20
Filed: 1953-08-21
Abstract: 779,942. Press-button retractive switches. HAYDON SWITCH, Inc. Aug. 21, 1953 [June 18, 1953; June 22, 1953], No. 23120/53. Class 38(5)  A snap-action switch is provided with a spring blade 12 having a compression member 13 which extends out of the general plane of the blade when unmounted, as shown in Fig. 5, and one or more crimped tension members 14 connected at their ends to the member 13. A supporting member 22 has a part 26 which engages the member 13 on one side of the blade, a second supporting member 23 on the other side of the blade engaging the tension members 14 by means of depending portions 30. When the parts are secured together by rivets 25 a part of the compression member 13 becomes inverted as shown at 13<SP>1</SP> in Fig. 2a. The blade and supporting members are mounted in a hermetically sealed casing, Fig. 2, the switch being operated by a push button 60 which is sealed in the casing by a flexible washer 61 of a silicone rubber compound. The  lower end 63 of the button abuts against a button 64 carried by the free end of the member 23. In the switch shown in Fig. 2 the blade 12 carries contacts 16, 17 which engage fixed contacts 32, 33. The rear side of the supporting member 22 abuts against a member 54 which may be mounted eccentrically on a tube 55 to provide an adjustment for the member 22. The member 54 may be of hexagonal or other shape to provide a fixed number of adjustments. Tight seals are made between the lid of the casing and the terminal connections to the contacts 32, 33 and the fixed end of the blade 12. The lid is soldered to the casing which may be exhausted through the tube 55 which is then closed. Fig. 7 shows the switch modified to control two independent or three interdependent circuits. The spring blade 116 carries on its upper face a contact 150 which normally presses against a fixed contact 140. The lower side of the blade carries a shorting bar 160 which is insulated from the blade and which connects two fixed contacts 141, 162 when the contacts 140, 150 are disengaged by depressing the operating button 131. The bar 160 is capable of a limited rocking movement by being mounted on a non-circular post 171 projecting from an insulating member 170 partially surrounding the end of the blade 116. A ridge 173 on the member 170 acts as a fulcrum to limit the rocking movement of the bar 160 to a direction longitudinally of the blade. If the interdependent circuits are to be controlled the member 170 is made of conductive material so that the bar 160 is electrically connected to the blade 116. Specification 776,142 is referred to.
Patent GB-836847-A (GB)
Title: Method for the preparation of methyl 2-ketogluconate
IPC: C07H7/027
Filed: 1957-07-22
Abstract: Methyl 2-ketogluconate is prepared by a batchwise process which comprises reacting a solution of calcium 2-ketogluconate with an acid whose anion will form an insoluble precipitate with calcium to produce a solution of 2-ketogluconic acid and an insoluble precipitate, separating the 2-ketogluconic acid from the precipitate, concentrating the 2-keto-gluconic acid solution, esterifying the concentrated 2-ketogluconic acid solution with methanol in the presence of a catalytic quantity of a strong acid whose anion will form an insoluble precipitate with calcium in the first step of the process and separating the methyl 2-ketogluconate resulting from the esterification from the mother liquor formed simultaneously therewith, in which at least a portion of the mother liquor from another batch operation from which the methanol has been removed, together with a quantity of an acid whose anion will form an insoluble precipitate with calcium, is added to the calcium 2-keto-gluconate solution of another batch operation; and the last-mentioned acid plus the catalyst acid contained in the added mother liquor are equivalent to the calcium 2-ketogluconate of such other batch operation.  It is preferred to use the same acid, generally sulphuric, for catalysing the esterification as for liberating the acid.  Oxalic acid may also be used for the latter step.  The calcium 2-ketogluconate solution may be made from the pure hydrate or may be crude fermentation beer, e.g. that obtained by fermenting glucose monohydrate solution with pseudomonas bacteria in the presence of sufficient calcium carbonate to neutralize the acids produced.
Patent GB-754896-A (GB)
Title: Improvements in or relating to ring packings
Inventor: STAAFF PER HILDING
IPC: F16J15/00
Filed: 1954-08-10
Abstract: 754,896. Stuffing-box substitutes. AKTIEBOLAGET SEPARATOR. Aug. 10. 1954, No. 23200/54. Class 122(5) A shaft sealing device, particularly for the rotating shaft 13 of a centrifugal separator. comprises two U-section packing rings 11, 12 arranged back-to-back and housed in L-section rigid guide rings 14, 15 having their radial flanges opposed and at least one of the flanges being provided on its outer face with a transverse groove 16 to act as a drain for leakage fluid. The separated liquids are delivered to chambers 6 and 10 and any liquid leaking past the rings 11, 12 passes through groove 16 and chamber 18 to drain outlet 19.
Patent GB-204487-A (GB)
Title: Improvements in roofing tiles
IPC: E04D1/04
Filed: 1922-08-28
Abstract: 204,487. Akerman, W. S. Aug. 28, 1922. Roofing tiles.-Tiles for roofs are of two series, one c of which is of T-cross section, laid in rows which alternate with rows of tiles a of the other type which are curved or hollowed and laid in overlapping formation across and in engagement with the battens b, the wing portions g of the T-shaped tiles being directed downwardly on to the adjacent tiles. The T-shaped tiles, Fig. 8, are each provided with a nib h on the stem f to engage the battens, and also with a recess i to engage the nib j on the tile below. The double wing portion g is extended at one end to provide for overlapping the adjacent tile, a corresponding recess k being provided at the other end.
Patent GB-955482-A (GB)
Title: Surfactants
IPC: C11D1/722
Filed: 1960-07-04
Abstract: The invention comprises surface-active compounds of the formula: where R is an octyl or nonyl group, x has an average value of 5.8 to 20, y has an average value of 5 to 10, and the ratio of average x to average y is 1.15 to 2.15.  The octyl or nonyl group may be normal, iso or tertiary and may be in any position on the ring but is preferably para.  They are prepared by reacting octyl or nonyl phenol with ethylene oxide at 130 DEG  to 210 DEG C. in the presence of a basic catalyst (in one or two stages) and then with propylene oxide in a similar way. The products may be neutralised with sulphuric acid, bleached, e.g. with hydrogen peroxide, stripped and filtered. Examples are given.  Specification 857,156 is referred to.ALSO:The invention comprises surface-active compounds of the formula: <FORM:0955482/C3/1> where R is an octyl or nonyl group, x has an average value of 5.8 to 20, y has an average value of 5 to 10, and the ratio of average x to average y is from 1.15 to 2.15.  The octyl or nonyl group may be normal, iso or tertiary and may be in any position on the ring, but is preferably para.  They are prepared by reacting octyl or nonyl phenol with ethylene oxide at 130 DEG  to 210 DEG C. in the presence of a basic catalyst (in one or two stages) and then with propylene oxide in a similar way.  The products may be neutralized with sulphuric acid, bleached, e.g. with hydrogen peroxide, stripped and filtered.  Examples are given.  Specification 857,156 is referred to.ALSO:A detergent comprises as surface-active agent a compound of the formula <FORM:0955482/C3/1> where R is an octyl or nonyl group, x has an average value of 5.8 to 20, y has an average value of 5 to 10, and the ratio of average x to average y is 1.15 to 2.15.  The octyl or nonyl group may be normal, iso or tertiary and may be in any position on the ring but is preferably para.  In Example 3, a detergent consists of 5 parts of the above compound where R is octyl, x is 13 and y is 7.4, together with 30 parts caustic, 30 parts sodium metasilicate pentahydrate and 35 parts soda ash.  Specification 857,156 is referred to.
Patent GB-809071-A (GB)
Title: Improvements in or relating to transistors
Inventor: KNOTT RALPH DAVID
IPC: H01L23/04
Filed: 1955-08-12
Abstract: 809,071. Transistor construction. GENERAL ELECTRIC CO. Ltd. Aug. 13, 1956 [Aug. 12, 1955], No. 23334/55. Class 37. A transistor designed for good heat dissipation consists of a piece of germanium 1 mounted on a recess in a U- shaped copper member 6. The member 6 forms the base, and collector and emitter electrodes of indium are disposed on each side of the germanium and have terminals attached at 4 and 5. Leads from the three electrodes are sealed in a glass base 10 which has sealed to it a copper cover 9. A copper cap 15 is placed over the assembly which is in tight contact with 6 due to the shape and resilient nature of this base plate. The cap 15 is also sealed by cold pressure welding on to the copper cover 9. In a modification the end of the base electrode next to the closed end of the cap is fitted with tongues adapted to bear resiliently against the end of the cap.
Patent GB-1151446-A (GB)
Title: Method of Controlling the Speed of Revolution of D.C. Motors and Control Circuits for carrying out the Method
IPC: H02P7/295
Filed: 1966-05-25
Abstract: 1,151,446. Control of D.C. motors. HEBERLEIN & CO. A.G. 25 May, 1966 [25 May, 1965; 21 Dec., 1965; 21 April, 1966], No. 23422/66. Heading H2J. [Also in Division G3] The speed of a D.C. motor supplied from an A.C. source is kept constant by adjustment of the firing angle of a controlled rectifier (thyristor) 3 by a system in which the motor back E.M.F. charges a triggering capacitor 9 negatively (top plate, through 10 and 6) during negative halfcycles of the supply (top terminal) to an extent, at least at the lower end of the speed range, depending upon the back E.M.F. so that during positive half-cycles of the supply the time taken for the capacitor to reach the necessary positive triggering potential also depends upon the back E.M.F. As shown, a breakdown diode 7 limits the negative charge on 9 at higher speeds to protect the thyristor; speed control is then effected by the fact that the positive charging of 9 from the supply is opposed by the back E.M.F. Speed is adjusted by rheostat 8 effective during positive half-cycles. The diode 7 also breaks down in the positive direction to apply the triggering pulse. The shunt field 2 is maintained by a capacitor 11. In Fig. 3 (not shown), the breakdown diode 7 is replaced by a transistor and diode in series conductive on positive half-cycles, the thyristor then being protected by a shunting Zener diode (13). Fig. 4 (not shown) again uses a breakdown diode but negative breakdown is prevented by a normal diode (15) in series. Fig. 5 (not shown) operates similarly to Fig. 1, but supply diodes 4 and 5 are re-arranged. Fig. 6 (not shown) illustrates a system in which the capacitor is negatively charged by the supply voltage added to the back E.M.F. during negative half-cycles and this charge is reversed by the supply during positive half-cycles, until the firing point is reached. In Figs. 8 and 9 (not shown), the system is applied to a series motor and the breakdown device is a " glow tube."
Patent GB-336333-A (GB)
Title: Method of making sheet metal bearing bushes
IPC: B21D53/10
Filed: 1929-07-30
Abstract: 336,333. Klocke, W. H. July 30, 1929. Bearings; tubes.- In order to prevent misalignment in making cylindrical bearings from sheet metal, the blank is left attached to the sheet - metal strip until the final pressing operation. The strip 1, Fig. 6, of bearing - metal is moved forward in stages, the edges being first trimmed to form a blank 2., which is then partially sheared forming a blank 3 attached to the strip by a neck 6. The edges are then bent over between dies 7, 7<1>, Fig. 15, forming the blank 4, which is pressed to channel-form 5 over a mandrel 40, Fig. 16, between dies 9, 9<1>. The blank 5 is pressed to cylindrical form 5<a> between semi-cylindrical dies, the neck 6 being simultaneously sheared. Chips are removed by air jets 14.
Patent GB-600798-A (GB)
Title: Improvements in or relating to shaft sealing arrangements
IPC: F16J15/38
Filed: 1945-09-11
Abstract: 600,798. Seals for rotary shafts. CARRIER ENGINEERING CO., Ltd. Sept. 11, 1945, No. 23441. Convention date, Sept. 22, 1944. [Class 122 (v)] In a shaft seal, the contacting surfaces of a sealing ring 19 rotating with the shaft 8 and a stationary sealing sleeve 22 are sprayed with oil from a surrounding annulus 17 concentric with the contacting surfaces. The sleeve 22 is pressed against the sealing ring 19 by a spring 27 engaging at its other end a gland 25, 26 secured to a stationary member 23 on the casing 7 of seal, a cover 13 having a labyrinth seal preventing leakage of oil to the outside of the casing. The sealing sleeve 22 is spaced from a coaxial collar 20, rotatable with the shaft, to provide an escape passage 29 for surplus oil from the contacting surfaces. A self-lubricating ring of bronze or material containing carbon, graphite, &c. may be interposed between the contacting surfaces and both pairs of contacting surfaces so formed be sprayed with oil. An adjustable relief valve may ensure super-atmospheric pressure in the casing 7.
Patent GB-995586-A (GB)
Title: A screening device in a rotatable drum intended for grinding and/or mixing material
IPC: B02C17/18
Filed: 1963-06-12
Abstract: 995,586. Screens. BOLIDENS GRUVAKTIEBOLAG, and SKELLEFTEA GUMMIFABRIKS A.B. June 12, 1963 [June 15, 1962], No. 23447/63. Heading B2H. A circular screen suitable for use in a grinding or mixing drum is built up of a number of perforated segments 8 of an elastomer secured edge to edge by fastening ribs which carry radial lifting ribs 16. The perforations 7 are circular, elliptical; or slotted and are flared open. The edges of the segments 8 are beaded and clamped together by U-sectioned strips engaging the beads back and front. As seen in Fig. 1 the strips are bolted to flanges raised from the conical end of the drum 1 whereby each elastomer segment gives access to a partitioned space which lifts and discharges material to a trunnion 3 as the drum rotates. When the screen is employed intermediate the ends of the drum the central aperture 14 is omitted.
Patent GB-352288-A (GB)
Title: Process for the preparation of condensation products from urea and formaldehyde
IPC: C08G12/12
Filed: 1930-08-06
Abstract: Urea is condensed with formaldehyde in the presence of glucose or lactose and a metal oxide, and the product is polymerized at 80 DEG C.  In an example, a mixture of urea (1 mol.), aqueous formaldehyde (2,16 mols.), glucose (0,13 mol.) and a little zinc oxide is heated to boiling, first at atmospheric pressure and then under reduced pressure, and the product is run into moulds of metal or plaster and polymerized for 36 hours at 80 DEG  C.
Patent GB-151470-A (GB)
Title: Improvements in travelling grate furnaces
IPC: F23H11/18
Filed: 1919-09-25
Abstract: 151,470. Steinm³ller, L. Sept. 25, 1919. Grates.-Relates to fuel and ash &c. stops for the rear end of a travelling grate and consists of means for controlling the pressure exercised by the stop and allowing it ready release, and constructions for preventing rolling of the fuel into balls against the stop and for admitting air &c. to burn any unconsumed fuel. In its simplest form, Fig. 1, the pivoted stop a has secured to it an arm d carrying a rolling weight f and normally resting on a support e. If the stop has to rise owing to excessive accumulation of clinker &c., its motion, as soon as the arm d passes the horizontal, is accelerated by the movement of the weight so that the obstruction is rapidly cleared. On the return, acceleration is in the revese direction so that the stop drops back quickly into closed position. Figs. 2, 4, and 5 show other constructions having the same end in view. In Fig. 2, the member d takes the form of a lever centrally pivoted at d<2> and engaging under a roller a' pivoted in the stop a. In Fig. 4, the lever d is connected by a link 12 to the stop, and the weight p is carried by a short arm independently mounted on the pivot of the lever. This construction provides for positively holding the stop in its closed position (full lines) or in a wide-open position (III), or, if the link 12 or the lever d be lengthened, will provide a variable resistance in the closed position. Further, by movement of the weight p, the closing force can be made large or small at will while a stop set in one or other of the holes m determines the amount of minimum opening. In the form shown in Fig. 5, the lever d is pivoted to the stop and is of a section shown in Fig. 6. A weighted arm 14, corresponding in function to the weight p of Fig. 4, is secured to the shaft d<2> on which the lever d is loosely mounted, and is extended outside the furnace, where it carries a hand-wheel o. Other slight variations in construction are described. The weight of the stop may be partly balanced by a counterweight connected to it by a chain. In order to prevent balling of the fuel, the face of the stop is formed with steps, Fig. 8, which may be integral or, as shown in Fig. 9, the hinge member c<3> on which the stop is adjustable may itself form a step. The supply of air or steam is effected by means of nozzles 15 secured to the bridge c.
Patent GB-819944-A (GB)
Title: Racecourse starting gate latch
IPC: A63K3/02
Filed: 1957-07-25
Abstract: 819,944. Racecourse starting gates. O'HALPIN, P. July 25, 1957 [Sept. 27, 1956], No. 23585/57. Class 132(1) A racecourse starting gate comprising two or more tapes secured one above the other in a gate carriage assembly movable vertically between uprights is biased upwardly by resilient members, e.g. rubber cords, which connect to the upper ends of the carriage to fixed overhead anchorages, and is held down in the closed position by a latch at each end under control of a trip lever formed as an extension of the armature of a solenoid, disengagement of the trip lever from each latch to release same being controlled by energizing or de-energizing its solenoid. As shown, the gate carriage comprises a pair of upright T- section members 1 bridged by tapes 5 forming the barrier. A bracket 2 carrying a four-wheel bogey runner 3 extends from the rear of each member 1, each bogey riding upon the inner surfaces of the flanges of a pair of spaced apart angle-section guide rails 4 secured by braces 6 to an upright 7. Secured to each upright 7, there are braces 9 carrying a main plate 8 on which is pivoted at 11 a catch 10 whose movement is limited by a strip 22 anchored to a pin 23 and which projects above one of the brackets 2. Alternatively latch 10 could be pivoted to guide rail 4. The upper end of each member 1 is biased upwardly by rubber cords or the like secured to overhead anchorages which may be provided on or extended from uprights 7. Latch 10 is maintained in position against the action of the resilient members by a tomahawk head 13 on the end of a trip lever 14 forming an extension of the armature 15 of a solenoid 16 mounted upon plate 8. Head 13 is pivoted at 17 to the plate 8 and a stop pin 18 projecting from plate 8 limits the downward movement of lever 14 which is guided between extensions 19 of the solenoid frame. A microswitch 20 on plate 8 is closed by a finger 21 on lever 14 to energize solenoid 16. The two solenoids are connected e.g. in series so that they may be de-energized simultaneously.
Patent GB-1326817-A (GB)
Title: Method and apparatus for electrophotography
IPC: G03G15/056
Filed: 1971-04-19
Abstract: 1326817 Electro-photography KATSURAGAWA DENKI KK 19 April 1971 [24 Jan 1970] 23616/71 Heading G2H After the formation of a charge image on an insulative layer adjacent a photo-conductive layer capable of exhibiting persistent internal polarization, using a corona device of one polarity before imagewise light exposure and a corona device of the opposite polarity during exposure, the image is intensified using a corona device of the second polarity (the intensity of the third corona device being greater than that of the second). Uniform exposure may follow the third charging step. The photo-conductive layer is exposed on either surface (through the insulative layer or'an electrode layer. The charge image is developed before or after transfer to a receiver surface. The insulative layer may be the outer surface of a continuously rotating drum. The exposure may be through the second corona device, the third corona device being adjacent thereto (as shown).
Patent GB-1103316-A (GB)
Title: Improvements in or relating to casings
Inventor: SHEPHERD LESLIE
IPC: B65D6/02
Filed: 1965-06-02
Abstract: 1,103,316. Making cases. BEDCO Ltd. 10 May, 1966 [2 June, 1965], No. 23619/65. Heading B3A. [Also in Divisions B8 and H1] A sheet metal casing is formed from a blank, Fig. 1, which is formed into a tube of rectangular cross-section, the edges at one end of the tube being formed with inwardly-directed flanges which are cranked to define channelshaped portions, these flanges being reinforced at the corners of the tube by brackets, Fig. 6, of which portions 13 engage the channel-shaped portions of the flanges. The brackets may be held either by friction or by welding.