baber/WOPTO huggingface dataset:
Patent GB-543559-A (GB)
Title: Improvements in the adjustment and mounting of trimmer tabs on elevators, rudders and other parts of aeroplanes
IPC: B64C9/02
Filed: 1941-03-15
Abstract: 543,559. Aircraft trimmer tabs. MARTIN, J., and MARTIN-BAKER AIRCRAFT CO., Ltd. March 15, 1941, No. 3570. [Class 4] The trimmer tab of an elevator, rudder or other control surface of an aeroplane is adjusted by mechanism accommodated within the elevator &c. and actuated from the remote end by a key or equivalent driving member. A trimmer tab 5 has an arm 7 projecting into the control surface where it is connected by a link 11 to a lever 12 pivoted between brackets 14 secured to a tube 15 extending between two ribs of the control surface. The lever 12 is moved by a link 13 engaged by a screw 18 connected by a universal joint 23 to a spindle 19 journalled in a sleeve 22 surrounding the main control shaft 4. The forward end of the spindle 19 has a universal joint 24 adapted to receive a key or crank inserted at a convenient angle through the leading edge of the control surface. Alternatively the joint 24 may be connected to a short shaft journalled in the leading edge of the elevator and shaped at its end to receive a key.
Patent GB-660229-A (GB)
Title: Improvements in or relating to drying apparatus for drums or the like
IPC: F26B21/00
Filed: 1949-02-09
Abstract: 660,229. Drying casks. BLAGDEN & CO., Ltd., V., and WALDE, R. S. March 24, 1950 [Feb. 9, 1949], No. 3584/49. Class 21 [Also in Groups XIII and XXX] Apparatus for drying drums, casks &c. has two conveyers 14, carrying the drums through a tunnel 29 and an endless belt 33 movable with each conveyer and having nozzles 34 upon it which can enter the bungholes of the drums, the belt engaging and closing the open side 31 of an air trunking 30 through which air is supplied to the nozzles by which it is delivered into the drums. The conveyers 14 travel on runways 13 and consist of hinged links 18 joined by crossbearers 21 having upper flanges supporting the drums and other cross-bearers having arms 24 to prevent rolling. Below the upper stretch of each conveyer is the air trunk 30 and the nozzles 34 attached thereto are welded to the conveyer cross-members 21 and by this means the belt is constrained to move with the conveyer. The air trunks 30 receive hot air through trunks 36 from a fan 37 and heater 39 and a return air manifold 41 has inlets 42 from the drying tunnel 29 controlled by dampers 43, this return manifold being led into inlet 40. A byepass flap valve 45 allows the proportion of fresh to recirculated air to be adjusted. The tunnel 29 may be lagged and provided with heating means.
Patent GB-1171826-A (GB)
Title: Single Crystal Silicon on Beryllium Oxide
IPC: H01L21/205
Filed: 1967-01-24
Abstract: 1,171,826. Silicon solid circuits; resistors. NORTH AMERICAN AVIATION Inc. 24 Jan., 1967 [26 Jan., 1966], No.3591/67. Headings H1K and H1S. [Also in Division C7] Silicon is deposited on single-crystal beryllium oxide substrates by high-temperature thermal decomposition, by the hydrogen reduction of silicon tetrachloride, by the reduction of other silicon halides or hydrides or by vapour transfer of elemental silicon, then division of the deposit and impregnation with acceptor and donor impurities converts the silicon into diodes, transistors, resistors, capacitors &e. The silicon is deposited on natural crystal faces of the beryllium oxide, and is in epitaxial overgrowth on them, mismatches of up to 12-7% between the spacings of the rows of the silicon and beryllium atoms being relieved by microtwinning. Preferred combinations are that of the (111) plane of silicon on (10T1) beryllium oxide and (111) silicon on (0001) beryllium oxide, but (100) silicon on (10T0) beryllium oxide and (110) silicon on (10T0) beryllium oxide are described.
Patent GB-703423-A (GB)
Title: Improvements relating to the regeneration of caustic alkali solutions containing mercaptans
IPC: C10G19/08
Filed: 1951-02-14
Abstract: Mercaptan-containing caustic alkali solutions are regenerated by treatment with a free oxygen containing gas in the presence of an inorganic copper oxidation catalyst such as copper sulphate, the concentration of which is preferably between 0.0008 and 0.00008 per cent. weight (as copper)/volume.  The concentration in the case of caustic soda should preferably not exceed 15 per cent., but stronger solutions may be regenerated if a substance which increases the solubility of mercaptans in alkali solutions (solutizer) is used. Sodium cresylate is preferred The regeneration may be effected at 85-90 DEG F. using 7-25 cu. ft. air per hour.
Patent GB-888822-A (GB)
Title: Improvements in or relating to high-voltage control of electric locomotives
Inventor: PAWELKA ERWIN
IPC: B60L9/26
Filed: 1960-02-02
Abstract: 888,822. Transformers. ELIN-UNION AKTIENGESELLSCHAFT FUR ELEKTRISCHE INDUSTRIE. Feb. 2, 1960, No. 3749/60. Class 38 (2). [Also in Group XXXVII] An electric control arrangement for electric motors M 1 -M 6  comprises a main transformer P H , S H  and an auxiliary transformer P z , S z , connectible in bucking or boosting relationship, the two secondary windings S H , S z  being connected in series to feed the motors and the auxiliary primary winding P z  being fed with a variable voltage from tappings on the main primary winding by a tapchanging switch St. One end of the primary winding P z  is connected to the tap-changing switch St, and the other end is connected to the movable contact of a change-over switch WS whose fixed contacts are connected to the two ends of the main primary winding. On moving the rotatable tapchanging switch from the position shown (maximum buck) the bucking voltage is gradually reduced until at position 15 the winding P z  is short-circuited. At this stage the switch WS is changed over and on moving to position 1 again a small boosting voltage is applied, this being increased to a maximum on moving through the tappings. In a more detailed disclosure (Fig. 2, not shown) the linked mechanism of the switch arrangement is shown and this includes a diverter switch. In a modification, different tappings are used for bucking and boosting.
Patent GB-348175-A (GB)
Title: Weeding implement
IPC: A01B25/00
Filed: 1930-02-04
Abstract: 348,175. Implements for working the land. GULLOV, P. K., Rojle Mark Pr, Middelfart, Funen, Denmark. Feb. 4, 1930, No. 3781. [Classes 6 (i) and 6 (iii).] In agricultural implements wherein one or more hoes or tines dare mounted upon a frame c on wheels b and adapted to be pressed into the ground by the operator, means such as brushes, teeth or the like i, adapted to remove weeds and rubbish from the tines d when the latter are raised from the ground, are connected to the axle-casing a of the wheels b. The tines are detachably secured as by nuts e to a portion of the frame c parallel to the axle. The frame is rotatably mounted with respect to the wheels, and carries adjustable counterweights n to assist in raising the tines. The brushes i are carried by arms h projecting from and integral with the axle-casing. When the tines are raised, the brushes remain in contact with the ground, either through their weight alone, or with the assistance of the operator's foot, and so clean the tines as they move upwards. The implement can be converted into a harrow by removing alternate tines and re-fixing them on a cross-bar j, in which case brushes i<1> may be carried on a cross-bar m attached to the arms h.
Patent GB-727091-A (GB)
Title: Improvements in and relating to filter presses
IPC: B01D25/176
Filed: 1953-02-11
Abstract: 727,091. Filters. GEIGY AKT.-GES., J. R. Feb. 11, 1953 [Feb. 12, 1952], No. 3786/53. Class 46. In a filter press in which the filter press plates consist of a framework having holes for the peripheral. admission of feed slurry and washing liquor and discharge of mother liquid, and a sheet-form central plate strong enough to withstand only the pressure difference across it, and with uneven surfaces on both sides, the plates are separated by an elastic insert piece consisting of one part located in the admission hole of the frame and serving to fix the insert piece to the filter press plate and a second part serving as a channel from the frame to the press interior and serving also to keep those portions of the filter cloths in contact with it pressed tightly against the filter press plates. A filter press plate comprises a demountable framework 15a, b, c, Fig. 1, enclosing a plate 25 consisting for example of corrugated iron sheet having a thickness of from 1 to 3 mms. A feedhole 28, counterbored at 29, Fig. 3, is provided for liquid to be filtered, and communicates by channels 30 with the spaces on either side of the central plate 25. Inlets 32, Fig. 1, and borings 33 for washing-liquor and air are also provided. The filter cloth is preferably such as can be suspended, inverted-U fashion, over the upper member 15b so as to cover both sides of the plate, and has pairs of holes corresponding to 28 and 32. It is partly retained in place, and adjacent filter plates are juxtaposed in a fluid-tight manner by an insert piece 31, Fig. 3, which may comprise an annular rubber disc 34, Fig.7, having a slot 39 providing communication with the channels 30 of two adjacent plates, and secured by rubber rods (not shown) between frusto-conical annulae 35, 36, one of which has a stem 37 surrounded by a rubber sleeve 38 and adapted to fit in the hole 28. The insert piece may be wholly of rubber and in one piece, Fig. 10. The slot 42 is in that case strengthened by rigid tubing 44. Where the counterboring 29 is omitted the insert may comprise a short piece of tubing with a smaller piece depending from it. In Fig. 13 the insert piece comprises an open channel member 49 provided at one end with a dependent member 50 having an elliptical bore 51 and at the other with a hook 52 which fits into a slot provided in the opening 28 of the filter plate.
Patent GB-539206-A (GB)
Title: Improvements in or relating to game apparatus
IPC: A63F7/02
Filed: 1940-03-01
Abstract: 539,206. Ball games. STEWART, E. March 1, 1940, No. 3830. [Class 132 (ii)] In a game apparatus wherein the players throw balls into a plurality of pockets 4 from a number of playing positions 6 an indicator 18 is provided comprising a number of indicating panels 19 each clearly visible from a corresponding playing position and a plurality of lamps corresponding with the pockets and adapted to reproduce on each panel a replica or indication of the pockets as viewed by the players. The balls are run out of the pockets into a box 11 by pulling out an apertured slide. Electric switches carried by the slide are closed by the weights of balls within the pockets, and illuminate scoring numbers on the panels 19 arranged as a replica of the numbering of the pockets as viewed by the player.
Patent GB-635039-A (GB)
Title: Method of freeing and ejecting die castings formed on cores
IPC: B22D17/22
Filed: 1948-02-10
Abstract: 635,039. Injection-moulding machines. PLASCO, Ltd. Feb. 10, 1948, No. 3841. Convention date, Aug. 1, 1947. [Class 87 (ii)] [Also in Group XXII] In making die castings a core pin 17 is, after injecting the material, withdrawn slightly to free it from the shrinking casting 13, the die parts 11 are then separated and finally the casting is stripped from the pin. This is normally held correctly in the die 11 by a spring 29, collar 28 and stop 24, which may have adjusting means not shown: A sleeve 26 on the pin is first moved up to engage the collar 28 and withdraw the pin slightly and then, after the die parts have separated, it is moved down to strip the casting. The parts are then returned to the position shown. In a modification the pin is moved positively up a short distance, Fig. 6, and finally up a further amount to engage the casting against an abutment 46 and so strip it. In another modification one die part 47, Fig. 8, is fixed and, after the pin has been withdrawn slightly the die half 48 is moved to the left and the pin, with the sleeve 26 and operating mechanism 54 is also moved to the left by a smaller amount to free the casting from both die parts.
Patent GB-569659-A (GB)
Title: Improvements in and relating to the reclaiming of rubber
IPC: C08J11/14
Filed: 1943-04-22
Abstract: In reclaiming rubber, particularly that associated with cellulosic fibres such as tyres, hose, &c., the material is heated by saturated steam under a pressure corresponding to a temperature of 230-270 DEG C. or by steam at a lower pressure superheated, e.g. by electric heaters, to this temperature.  The rubber is softened in 2 to 4 hours and the fibres are tendered or carbonized.  Alkali and plasticizing agents may be present.  After the heating, the steam pressure is reduced and the vessel is flooded with water to cool the rubber before it comes into contact with air.
Patent GB-1492612-A (GB)
Title: Refractory materials
IPC: C04B35/047
Filed: 1974-01-29
Abstract: 1492612 Refractory materials STEETLEY MINERALS Ltd 20 Jan 1975 [29 Jan 1974] 04051/74 Heading C1J A refractory material consists of a mag-chrome refractory clinker or a mag-chrome refractory clinker/chrome ore mixture, the clinker being made by sintering without fusing, at greater than 1600‹ C., a mixture containing chrome ore or a blend of chrome ores and caustic magnesia, the chrome ore or blend comprising at least 67 wt. per cent chrome flour and at most 33% coarse chrome concentrates, the refractory material containing (by wt.) the mole ratio CaO:SiO 2  being 0À25:1 to 0À75:1. Preferably a separate chrome ore addition is up to 20%. Suitable magnesia and chrome ore compositions are given as are examples of suitable refractory materials which may be bonded by heat (1550‹ to 1750‹ C.) and pressure and optional calcining to form bricks. Physical properties of such bricks are tabulated.
Patent GB-1282591-A (GB)
Title: Improvements in or relating to drive couplings
Inventor: HUNT ANTHONY OWEN
IPC: F16D3/80
Filed: 1969-01-24
Abstract: 1282591 Shaft couplings POWDER COUPLINGS Ltd 22 Jan 1970 [24 Jan 1969] 4232/69 Heading F2U A yielding coupling comprises a flanged member 10 on one shaft and located within a cup-shaped member 11 on the other shaft, both members having radial overlapping vanes 12, 13, and the space between them containing a vibration-damping fluid mass of material particles such as metal shot. The particles preferably occupy more than 75% of the space. Leakage is prevented by outer and inner sealing rings 15, 16.
Patent GB-961943-A (GB)
Title: Process for the production of thermally and chemically stable polyoxymethylenes
IPC: C08G2/38
Filed: 1960-08-29
Abstract: Polyoxymethylenes are produced by the polymerization of anhydrous low oligomers of formaldehyde in the presence of aliphatic or araliphatic ether, acetals, ketals, esters or carboxylic acid anhydrides all of which contain the structural unit R-O-R1 once or several times wherein R and R1 are like or different organic radicals.  Specified materials are polypropylene oxide, polyvinyl isopropyl ether, polyvinyl butyral, polyvinyl acetate, polymethylmethacrylate, cellulose acetobutyrate, polycarbonates, polyethylene terephthalate, methyl methacrylatestyrene copolymer, polymeric adipic anhydride, diisopropyl ether, methyl benzyl ether, dibenzyl and diallyl ether, chloromethylether, anisole, diphenyl oxide, cyclohexyl methyl ether, butyl phenyl ether, dimethyl formal, diethyl formal, diethyl acetate, glycol formal, propanediol formal, 1-3-dioxacycloheptane tetrahydrofuran, 1-3-dioxolane, b -propiolactone, 4-phenyl-1-3-dioxane, 1-2-propylene glycol carbonate, and the polycarbonate of 4-41-dihydroxyphenyl-2-2-propane. Organic solvents e.g. methylene chloride, nitrobenzene and toluene may be present as may also ionic catalysts e.g. antimony pentachloride, boron fluoride etherate, and iodine and antioxidants. Specifications 570,884, 744,336, 770,717 and 796,863 also are referred to.
Patent GB-1363459-A (GB)
Title: Pregnene 16,17-ketals
IPC: C07J7/00
Filed: 1974-01-30
Abstract: 1363459 6,6-Difluoropregnenes E I DU PONT DE NEMOURS & CO 24 Sept 1971 [1 Feb 1971] 4372/74 Divided out of 1363458 Heading C2U The invention comprises compounds of formula wherein a is a single or double bond; R<SP>5</SP> and R<SP>6</SP> are each phenyl, C 1-6  alkyl or C 5-6  cycloalkyl, or together form tetramethylene or pentamethylene; and (i) Y is #-OH and Z is α-F or α-Br, or (ii) Y is α-OH and Z is α-H, or (iii) Y and Z together represent 9#,11#-epoxy or a 9,11- double bond; with the proviso that when α is a double bond then Y is #-OH and Z is α-F. Compounds I (a = single bond; Y=α-OH; Z=α-H) are prepared by ketalizing the corresponding 11α,16α,17α-triol, and are converted into other compounds I by the sequence: 11α-OH #  #<SP>9(11)</SP> # 9α-Br-11#-OH # 9#,11#-epoxy # 9α-F-11#-OH # #<SP>1</SP>-9α- F-11#-OH, the initial 9,11-dehydration preferably being effected via an 11α-sulphonate, and the final 1,2-dehydrogenation being effected chemically or microbially.  The starting materials are prepared as described in Specification 1,363,458. 6,6 - Difluoro - 11α - mesyloxy - 16α,17α- isopropylidenedioxypregn - 4 - ene - 3,20 - dione is prepared from the corresponding 11α-ol by reaction with MsCl. 6,6,9α - Trifluoro - 11# - hydroxy - 16α,17α- isopropylidenedioxy - 21 - chloropregna - 1,4- diene - 3,20 - dione (XIX) is prepared from 6,6,9α - trifluoro - 11# - hydroxy - 16α,17α- isopropylidenedioxypregn - 4 - ene - 3,20 - dione (XIV) by the sequence: XIV # 2#,21- dibromo - 6,6,9α - trifluoro - 11# - hydroxy - 16α, 17α - isopropylidenedioxypregn - 4 - ene - 3,20- dione (XV) #6,6,9α - trifluoro - 11# - hydroxy- 16α,17α - isopropylidenedioxy - 21 - bromopregna - 1,4 - diene - 3,20 - dione (XVI) # 6,6,9α - trifluoro - 11# - hydroxy - 16α,17α- isopropylidenedioxy - 21 - acetoxypregna - 1,4- diene - 3,20 - dione (XVII) # 6,6,9α - trifluoro - 11#,21 - dihydroxy - 16α,17α - isopropylidenedioxypregna - 1,4 - diene - 3,20 - dione (XVIII) # XVIII 21 - methanesulphonate # XIX. Compounds XVI to XIX are said to have anti-inflammatory and glucocorticoidal activity, and may be made up with carriers into pharmaceutical compositions for topical administration. Compounds III are said to have anti-inflammatory, progestational and antiandrogenic activities and may be made up with carriers into pharmaceutical compositions for oral, parenteral and topical administration.
Patent GB-524891-A (GB)
Title: Improvements in or relating to automatic or semi-automatic firearms
IPC: F41A5/20
Filed: 1939-02-10
Abstract: 524,891. Automatic rifles. M. E. R. 38 EKONOMISK FORENING, U. P. A. Feb. 10, 1939, No. 4385. Convention date, April 23, 1938. [Class 119] A gas-operated fixed-barrel automatic or semi-automatic rifle has two springs, both of which are compressed forwardly by the discharge, but which react in sequence, one to open the breech and the other to close it. The rotary bolt 30 has a quick-threaded extension 29 engaged by a non-rotary nut 27 slidable on guides 37 on the stock. The nut is connected by a forked slide 25 with a rod 18 which extends through a spring-case 10 and has at its forward end a ratchet-toothed enlargement 19. A spring 22 within the spring-case bears against a shoulder 18a on the rod. A second spring 16 is mounted outside the spring-case between an abutment 17 fixed thereon, and an abutment 15 rigid with the gun. A sleeve 6, which is slidable on the muzzle-end of the gun barrel 3 when the gases act on a plug 7 at the front end of the sleeve, is connected by a bolt 9a to the front end of the spring-case 10, and also has a resilient rearwardly-extending member 11 provided with ratchet teeth 12 adapted to engage the teeth 19 of the rod 18 through a slot 10a in the case 10. In the loaded and breechclosed position of the gun shown, the teeth 12 are held out of engagement with the teeth 19 by the engagement of an inclined nose 13 of the member 11 with a cam-slot 14 in the abutment 15. Both springs 16, 22 are unstressed. On discharge, the sleeve 6 is driven forwardly, together with the spring-case 10, both springs are compressed, and the teeth 12, 19 become interlocked. The forward energy is additionally absorbed by a buffer-spring 23 on the rear end of the spring- case. The spring 16 then reacts and moves the interlocked assembly of sleeve 6, case 10, member 11 and rod 18 rearwards, the spring 22 remaining compressed. This movement drives the slide 25 and breech-nut 27 back and opens the breech. At the end of its rearward travel, the nose 13 of the member 11 enters the cam-slot 14 and breaks the engagement of the teeth 12, 19. This frees the rod 18, which is immediately driven forwards by the spring 22 and closes the breech. A spring buffer 24a is interposed between the rod 18 and slide 25.
Patent GB-596218-A (GB)
Title: Improvements in or relating to fluid pump controls, particularly in connection with the extrusion of plastic material
IPC: B28B3/24
Filed: 1943-03-20
Abstract: 596,218. Feeding clay to moulding-machines. STEVENS, A. H. (Homer Laughlin China Co.). March 20, 1943, No. 4564. [Class 87 (ii)] [Also in Group XXIX] Clay is extruded by hydraulically - operated pistons 13, 130 through tubes 3, 4, at a constant rate, and the clay issuing from the tubes is cut off, by means not shown, into discs or bats which fall on or into moulds in an automatically-operated machine 5 for pressing the discs into shape and then jiggering the shaped bat. The constant rate of extrusion is attained by inserting a valve 71 in the hydraulic pipe line 19, 18, 15, 16 which connects a variable volume piston pump 21 with hydraulic cylinders 7, 8 which house pistons 10, 100 connected' to pistons 13, 130 by rods 11. This valve 71 ensures that the volumetric delivery of the pump 21 is maintained constant at all times. A certain amount of leakage occurs in the pump 21, and if the resistance offered by the clay increases, the resultant increase in pressure in the pipe line will be transmitted back to the pump and will tend to increase the leakage and decrease the delivery. However, the transmitted pressure passes through a duct 83 and forces to the right a spring-pressed plunger 77, thereby enlarging the valve outlet area at 75 and thus reducing the pressure. Conversely, if the clay resistance diminishes the outlet 75 is constricted, the pressure and leakage increased, and the pump output reduced. The clay is pushed into the tubes 3, 4 from a pair of removable magazines 1, 2. Clay is pushed from each magazine in turn. Thus, in Fig. 1, piston 13 is descending whilst piston 130 is stationary. When the 10-11-13 assembly reaches the bottom of its stroke, pressure builds up above the piston 10. This pressure is transmitted back to a pressure tripping valve 55, which opens to admit pressure fluid to a fourway pilot valve 48. The pressure fluid moves the valve 48 to connect a second pump 44, via pipe 51, with pipe 50 along which pressure fluid proceeds to reverse valves 39, 17. Reversal of valves 39, 17 connects (a) the underside of piston 10 with pump 44, via pipes 41, 37: the 10-11-13 assembly thus rises quickly and is replaced by a full magazine, (b) the underside of piston 100 with liquid reservoir 22, via pipes 38, 520, (c) the upper side of piston 10 with reservoir 22, via pipes 15, 36, and (d) the upper side of piston 100 with pump 21, via pipe 19, valve 71, and pipe 16. As a result of (d) clay is extruded from magazine 2 and tube 4. When piston 100 reaches its nadir, pressure builds up above it and is transmitted back to a pressure tripping valve 57, to reverse the pilot valve 48 and valves 39, 17. A device for synchronizing the periods of rest of the moulds with the cutting-mechanism is actuated by a piston 61 which follows the movements of valve 48.