baber/WOPTO huggingface dataset:
Patent GB-1522589-A (GB)
Title: Toy helicoptor
IPC: A63H27/127
Filed: 1977-06-29
Abstract: 1522589 Toy helicopters TOYTOWN CORP 29 June 1977 27204/77 Heading A6S A toy helicopter has two oppositely inclined and oppositely rotated rotor blades 30, 32, the lower 30 being fast on a frame 18 rotatable relatively to the helicopter fuselage 10 and the upper 32 being fast for rotation with a hub 34 and a spindle 36 journalled for rotation relatively to the frame, a rubber band 48 extending between a hook 46 on the frame 18 and a hook 44 on the spindle being wound by holding the lower blade 30 while turning the upper blade 32. Upon release of the two blades 30, 32, they rotate in opposite directions and relative to the fuselage 10.
Patent GB-535424-A (GB)
Title: Improvements relating to pneumatic control mechanisms
IPC: B62D11/08
Filed: 1939-10-06
Abstract: 535,424. Valves. PRATT, J. H., MANLEY, G. E., and GIRLING, A. H. G. Oct. 6, 1939, No. 27318. [Class 135] A rotary valve device particularly adapted for use as a steering control unit for use in conjunction with a vehicle employing endless tracks and utilizing a combination of selfchanging gear boxes and brakes for performing the several steering operations has means secured to and turning with the actuating spindle or spindles for relieving the valve or valves of part of the fluid pressure tending to press the valve member against its seat. As shown in the Figs., two coaxial and separately actuated valves are employed interlocked by a pair of slidable rods 27, 28 having conical heads, 27a, 28a co-operating with mating recesses 24a, 25a in the two operating handles 24, 25. The valve discs 16, of synthetic resin have exhaust passages 16a connecting ports on the face of the disc with a central exhaust passage 13b in the valve spindle and with pressure inlet passages connecting ports in the face of the disc with through ports in its outer periphery with the chamber 10 supplied with pressure through a connection 26. The valve seat member 18 of gun-metal or bronze is clamped to an aluminium casing 10 by a cap 10a and has passages 18 leading to the power devices. A spring-pressed ball catch 14 cooperates with hemi-spherical recesses in the actuating spindle 13 to hold the valve in its adjusted position. The pressure in the valve member is relieved by a cup-leather 19 clamped between washers 20a, 20b to the end of the actuating spindle 13 'by a screwed plug 21 and slidably engaging an annular wall on the back of the valve member. Springs 22 housed in pockets in the valve member bear on the washer 20b to hold the valve member in engagement with its seat. The cap houses a ball bearing 23 for the spindle and is provided with a lubricating nipple 27. In a modification in which a single valve replaces the two valves the cup leather is secured to a flange on the inner end of the spindle by a series of bolts, some of which have extensions to locate the springs 22 while others have ball-ends engaging operating sockets in the valve member. In this form two ball catches co-operate with two series of recesses in one of the cup-leather clamping plates. According to the Provisional Specification the valve member may be of conical shape and locking means of the plunger and tooth type employed.
Patent GB-982182-A (GB)
Title: Improvements in or relating to electromagnetic motors
IPC: B26B19/02
Filed: 1961-07-27
Abstract: 982,182. Dry shavers. SUNBEAM CORPORATION. July 27, 1961 [Dec. 23, 19601, No. 27319/61. Heading B4B. [Also in Division H2] An electric dry shaver comprises two cutting heads each consisting of an outer cutter 18 and an inner cutter 19, the inner cutters being reciprocated in opposite directions by drive arms 45 connected to pivoted armatures 38 which are oscillated in opposite directions from neutral positions by the motor, the motor field being formed by a pair of parallel and spaced field members having spaced poles at the ends thereof, each armature having two oppositely arranged pole faces which can be aligned with the spaced field poles as the armatures move between the field members, and the armatures being pivotally mounted for rotation about axes positioned at opposite ends of one of the field members whereby the two armatures and the field members form a magnetic series circuit in which substantially the entire magnetic flux passes through each field member and each armature. Each channelled outer cutter 18 is secured by welding &c. to a base-plate 21 and each inner cutter 19 has an opening 19c for engagement by a drive arm, the openings being at opposite ends of the cutters. A biasing spring 23 bears on a nylon pad 24 and engages openings in the inner cutter, one of the openings being a slot 19d to allow the tab 23b to move inwardly to compensate for variation in the spacing between the cutter and the base 21 which has a hinge connection 21a and a latch connection 21c with a head support 26. The support 26 is held abutted to the upper edge of the casing 12 by a screw 50 engaging a part 30d of the frame 30 of the motor (see Division H2) and is enclosed in a resilient plastic sleeve 15 forming a receptacle for cut hair and releasably held to the support by interlocking projections 15a, 26e. In a modification, a base-plate is provided for each cutting head and in further modifications having three or other odd number of heads, one of the armatures has two drive arms which are connected to the inner cutters of the outer shear heads, the other armature driving only the inner cutter of the central shear head and the springs 48 regulating this latter armature are tuned closer to the source of frequency to have a greater oscillation providing increased cutter stroke to balance the greater weight of the two outer cutters. Specification 542,131 is referred to.
Patent GB-231400-A (GB)
Title: Improvements in amusement apparatus
IPC: A63G31/00
Filed: 1924-11-17
Abstract: 231,400. Collins, P. Nov. 17, 1924. 1'racks for recreation.-In amusement apparatus of the kind in which a person is ejected from a chamber by means of a tipping floor 3 on to a travelling belt 23 or other objective, and in which a door 10 is opened simultaneously with the tip- - ping of the floor or seat, the floor is' operated by propping means such as the lever 6 which is turned so as to allow the floor to turn about its pivot 4. An entrance door 17 in the side of the chamber is connected by means of a link 15 with a latch 12, so that as the door is closed, a pin 14 on the link 15 engages with a groove 13 to lift the latch 12 out of engagement with a catch 20. Further movement of the link 15 causes the lever 6 to move. The lower end of the lever 6 is connected with the door 10 by a link 9. The belt 23 is carried by pulleys 24 in a framework 25, the upper end of which may be lowered by means of a screw 30 so that the lower end may be raised from the ground to render the apparatus portable on the truck 1. The belt is tensioned by the screwed shaft 34 and pulley 31, and is supported by guides 27 adjacent the intermediate rollers 24. An auxiliary side door may be operated by the movement of the floor so as to overlap the entrance-door 17.
Patent GB-245734-A (GB)
Title: Improvements in methods of and means for extinguishing fire
IPC: A62C13/00
Filed: 1925-10-31
Abstract: 245,734. Poleo Feuerl÷scher Ges. Jan. 9, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Portable pressure reservoirs; chemicals.-A fireextinguisher using methyl bromide which is expelled by its own vapour pressure has a discharge orifice k sealed by a rubber valve m which is mounted on a lever n and held closed by a spring p. A dip pipe c has a lower inlet with a ball-valve g retained by a cage f and an upper branch inlet d with a ball-valve g<1>, so that the extinguisher can be used in upright or inverted position. The cages f, fl are held in position by split rings h.
Patent GB-666454-A (GB)
Title: Improvements in or relating to mathematical instruments
IPC: G01B3/02
Filed: 1949-10-25
Abstract: 666,454. Calculating-apparatus. STUTCHBURY, C. P. Oct. 23, 1950 [Oct. 25, 1949], No. 27413/49. Class 106 (i). [Also in Groups XX and XXV] An instrument which can be used for calculating the powers, e.g. 7th or <SP>5</SP>/ 9 th of numbers and which can be read directly from a scale comprises two arms 1, 2 pivotally connected together by a hinge (see Group XXV), a plurality of pointers 3 each having one end pivotally secured to the arm 1 and the other end movable along a slot 5 extending longitudinally of the other arm 2, the pointers and slot being so disposed and dimensioned that the pointers 3 lie mutually parallel whatever the relative position of the arms 1, 2, and a logarithmic scale 20 carried by the arm 2 with its unity position in register with the pivot between the arms 1, 2. The desired power is read from the position on the scale of the appropriate pointer 3. The instrument may be used for the division of straight lines into numbers of equal parts or into parts of selected length ratios when it is provided with a linear scale 11 along the arm 2 (see Group XX). The scales may be detachable from the arm 2. Specification 628,490 is referred to.
Patent GB-737304-A (GB)
Title: Improvements in or relating to sodium perborate
IPC: C01B15/12
Filed: 1953-10-06
Abstract: Sodium perborate trihydrate of the formula NaBO3.3H2O or NaBO2.H2O2.2H2O is said to be formed by stirring or otherwise agitating a suspension of sodium perborate tetrahydrate in water between normal temperature and 60 DEG  C., and recovering sodium perborate trihydrate crystals.  The suspension is preferably inoculated with sodium perborate trihydrate crystals obtained from a previous operation.  Stabilizing agents such as magnesium silicate or stannic oxide may be added.  According to an example equal parts by weight of sodium perborate tetrahydrate and water were stirred for 4 hours at 50 DEG  C. and the resulting mass filtered and vacuum dried at 40 DEG  C.  That part of the perborate in the mother liquor was reused.  The product, sodium perborate trihydate, had a melting-point of 85 DEG  C., an active oxygen content of 11.7 per cent and a solubility per 100 grams of solution of 2.3 grams at 25 DEG  C. and 5.7 grams at 50 DEG  C.  The lattice constants of the trihydrate are stated.
Patent GB-664577-A (GB)
Title: Process for the sulfonation of alkyl-aromatic hydrocarbons
IPC: C07C309/31
Filed: 1949-10-26
Abstract: Alkylaromatic hydrocarbons containing an alkyl group of 5-18 carbon atoms (especially alkylbenzene hydrocarbons containing an alkyl group of 9-18 carbon atoms and preferably also containing one or two ethyl or especially methyl groups) are sulphonated by bringing into contact therewith a gasiform sulphonating agent containing 3-30 (preferably 10-20) per cent by volume of sulphur trioxide vapour in admixture with an inert gas (e.g. carbon dioxide or monoxide, nitrogen, sulphur dioxide, lower paraffin hydrocarbons or their halogen derivatives, or especially air) at a temperature substantially within the range 10-40 DEG  C. (e.g. 25-35 DEG  C., preferably about 30 DEG  C.), and in a total amount of substantially 1.1-1.4 mols. of sulphur trioxide per mol. of alkylaromatic hydrocarbon, and maintaining said gasiform agent at said temperature in contact with said hydrocarbon until the latter has been substantially completely sulphonated. Monosulphonation may be enhanced by bringing the sulphur trioxide gradually into contact with the hydrocarbon over a time interval of 0.5-5 (preferably 1-3) hours.  Temperature control may be facilitated by admixing with the alkyl-aromatic hydrocarbon an inert diluent-refrigerant (e.g. carbon tetrachloride, dichloro-difluoromethane, liquid sulphur dioxide or especially n-butane or n-pentane or mixtures thereof, preferably in an amount of 1-10 volumes per volume of alkylaromatic hydrocarbon), and regulating the pressure in the reaction zone so that a portion of said diluent-refrigerant is vaporized from the liquid mixture at the reaction temperature (and preferably returned by refluxing) and another portion is maintained in liquid state throughout the reaction.  Improvement in the quality of the product may be effected by incorporation into the liquid reaction mixture (whether or not containing an inert diluent refrigerant) of 5-15 per cent, on the weight of alkylaromatic hydrocarbon, of sulphuric acid of 95-100 (preferably 98-100) per cent concentration, the reaction temperature in this case being advantageously in the range 20-40 DEG  C. Examples illustrate the various features of the invention as applied to the sulphonation of a dodecyl-toluene. Other types of starting materials are also specified.
Patent GB-153774-A (GB)
Title: A combined nut spanner and pipe wrench
IPC: B25B13/14
Filed: 1919-11-07
Abstract: 153,774. McGhee, J. Nov. 7, 1919. Sliding-jaw and hand - grip wrenches.-A combined nut and pipe wrench comprises an ordinary sliding-jaw spanner with a handgrip lever jaw pivoted to the movable jaw for gripping a pipe in conjunction with the under or rear side of the movable jaw. As shown in Fig. 2, the pipe-wrench jaw E, G is pivoted adjustably by means of a pin M and holes C on the rear extension B<1> of the jaw B which is adjustable on the shank A of the fixed jaw by a screw F. In the modification shown in Fig. 5, the lever-jaw E is pivoted to the jaw B by a pin M passing through a slot N in the shank A. This Figure shows a nut L and a pipe H gripped by the wrench jaws.
Patent GB-969582-A (GB)
Title: Improvements in or relating to cathode ray tubes and to television equipment
IPC: H04N9/16
Filed: 1962-07-17
Abstract: 969,582. Colour television tubes. NIPPON ELECTRIC CO. Ltd. July 17, 1962 [July 17, 1961], No. 27504/62. Heading H1D. In a colour television tube the electron beam 4, Fig. 2, impinges on a secondary emission cathode 5, secondary electrons from which strike red-, green- and/or blue-fluorescent elements 7, 7<SP>1</SP>, 7<SP>11</SP>; 8, 8<SP>1</SP>, 8<SP>11</SP>; 9, 9<SP>1</SP>, 911, respectively, in the screen 6 with a distribution depending on alternating potentials e 1 , e 2  and e 3  applied to the respective sets of elements, the secondary emission being enhanced by the presence in the tube of an inert gas such as argon, xenon or krypton which latter also serves for focusing the secondary-emitted electrons. The electron beam may, as shown in Fig. 3, derive from separate electron guns 14, 15 and 16 for red, green and blue signals, respectively, and be deflected by a focusing ring 18 along a single direction 19; a short stylus at gun potential may be located along the axis of cylinder 18. The fluorescent elements of the screen may be made conductive at their bases or are printed on thin metal sheets or nets and may be mounted in 2- or 3-dimensional fashion.
Patent GB-1022594-A (GB)
Title: Improvements in or relating to automatic, electric toasters for bread or the like
IPC: A47J37/08
Filed: 1963-07-11
Abstract: 1,022,594. Electric toasters. SIEMENSELECTROGERATE A.G. July 11, 1963 [July 18, 1962], No. 27569/63. Heading A4D. In a toaster having a time switch in the base to switch off the heating current, slices of bread are insertable laterally or vertically between partitions defining toasting chambers. The heating elements are housed in the partitions.
Patent GB-1323798-A (GB)
Title: Aircraft hangar
IPC: E04H6/44
Filed: 1971-06-14
Abstract: 1323798 Aircraft hangars H H ROBERTSON CO 14 June 1971 [15 July 1970] 27708/71 Heading E1A An aircraft hangar to accommodate "jumbo jets" comprises a fixed unit 12 to house the tail unit of the jet and two relatively movable units 13, 14 to house the wings. The units 13, 14 are slidably mounted on guide tracks 15, 16 see also Figs. 6 and 9 (not shown) and have confronting open ends which in the closed position close the main opening 26 in the unit 12; the upper openings 27, 28 in the unit 12 to allow passage of the tail of the plane being closed by sliding doors 29, 30. For dimensions of the units, arrangements of joists therein and types of planes to be accommodated the Specification should be referred to.
Patent GB-873478-A (GB)
Title: Improvements in or relating to off-shore drilling or like underwater operations
Inventor: MCNEILL ROBERT CLARK
IPC: E21B7/128
Filed: 1957-09-03
Abstract: 873,478. Wells. SHELL OIL CO., CONTINENTAL OIL CO., SUPERIOR OIL CO., and UNION OIL CO. OF CALIFORNIA. Sept. 3, 1957, No. 27715/57. Addition to 873,481. Class 85. A head for connection to a submerged well conduit 45 to enable the circulation of drilling fluid introduced into the well by the drill pipe 42 comprises a body having a passageway therethrough, a first sealing means 76 for sealing the head to the conduit, a second sealing means 136 for sealing the head to the drill pipe, an outlet 83 for withdrawing drilling fluid from the chamber formed in the passageway between the sealing means and a branch 84 through which air may be supplied to mix with the fluid in a return hose connected to the outlet so that high hydrostatic pressure is not exerted on the borehole. The conduit is part of a receiver assembly, the assembly and head being generally similar to those described in Specification 873,479, and the main differences being that the head is guided on to the posts 59 of the assembly by sleeves 148 fixed above the centre of gravity of the head and that the branch 84 is provided.
Patent GB-936260-A (GB)
Title: Improvements in devices which include pivotal jib members
IPC: B66C13/18
Filed: 1961-08-01
Abstract: 936,260. Shovelling machines. COMPAGNIE DES ENGINS HYDROMECANIQUES DE CHANTIERS C.H.O.C. Aug. 1, 1961 [Aug. 16, 1960], No. 27807/61. Class 68 (1). [Also in Group XXX] Vertical swinging of a shovel-carrying boom 5 pivotally mounted at 6 on a self-propelled chassis 7, 8 is controlled by independently actuated hydraulic jacks 11, 15, the jack 11 being pivotally connected to the chassis part 7 at 12 and to a swinging lever 9 pivoted at 10 on the jib 5 whilst the jack 14 is pivotally connected to the swinging lever 9 at 16 and to the jib 5 at 15. Swedish Specification 129,142 is referred to.
Patent GB-1299488-A (GB)
Title: Drying method and apparatus
Inventor: CARTER STEPHEN BARNABY
IPC: B01L7/00
Filed: 1970-06-09
Abstract: 1299488 Critical point drying IMPERIAL CHEMICAL INDUSTRIES Ltd 25 May 1971 [9 June 1970] 27838/70 Heading A2D [Also in Division F4]  The water in a biological sample 26 is replaced by ethyl alcohol (which is miscible with liquid carbon dioxide), the sample 26- is placed in a pressure vessel 10 (which is then sealed by valves 14 and 16), the vessel 10 is cooled to a temperature (e.g. O‹C by means of an ice-water bath or coils carrying cooling fluid) below the critical temperature (31‹C) of carbon dioxide, carbon dioxide gas is admitted from a cylinder 15 (at 20-25‹C) to the vessel 10 so that it condenses, fills the vessel 10, and replaces the alcohol in the sample, the vessel 10 is warmed to a temperature (e.g. 40‹C) above the critical temperature of carbon dioxide so that carbon dioxide gas is formed without a phase boundary passing through the sample, and the carbon dioxide gas is allowed to escape from the vessel 10 at a controlled rate, to produce the dried sample. The wet sample 26 (mounted on a slide) is initially passed through a series of water-alcohol baths of increasing alcohol content, placed in a depression 25, and covered with alcohol. The warming of the vessel 10 may be with a hot water bath, or coils carrying heating fluid, or electrical means.
Patent GB-745055-A (GB)
Title: Improvements in or relating to control mechanism
Inventor: HOLMAN HERBERT EDWARD
IPC: G05G17/00
Filed: 1952-11-06
Abstract: 745,055. Control of motors. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 30, 1953 [Nov. 6, 1952], No. 27920/52. Class 38(3) [Also in Groups XX, XXIV and XXVI] A servo mechanism intended particularly for operating parts in television cameras, e.g. varying the diameter of the iris or rotating the lens turret, comprises a driving shaft 8 rotated by a spring in a rotatable housing 22 provided with a worm gear 23 meshed by a worm 24 on an axially movable shaft 25 driven by an electric motor 26. A compression spring 28 biases the shaft 25 to the right of the Figure to close a contact 29 in the circuit of the electric motor 26. When the spring in the housing 22 is fully wound, the worm 24 screws along the worm gear 23 to the left of the Figure, carrying the shaft 25 with it, and thus opens the contact 29 and stops the motor 26.
Patent GB-1461825-A (GB)
Title: Flanged pins
IPC: B21K1/46
Filed: 1974-06-24
Abstract: 1461825 Heading CATERPILLAR TRACTOR CO 24 June 1974 [25 June 1973] 27959/74 Heading B3H An annular flange or head is formed on the end of a metal pin 12 by rotating the pin relative to a member 13 engaged with the end of the pin to frictionally heat the pin end, the pin then being axially advanced to upset the heated end into a flange 33 and withdrawn while still being relatively rotated. The member 13 may also be simultaneously headed or alternatively be made of non-forgeable material such as ceramic or cast iron, so that it is reusable for succcessive heading operations. The pin and the member are kept rotating relatively during the withdrawal to prevent bonding of the headed pin and the member. The process is performed in a friction welding machine which may be of the inertia type.
Patent GB-470602-A (GB)
Title: Improvements in and relating to spring reverse motions for looms
IPC: D03C1/14
Filed: 1936-10-15
Abstract: 470,602. Loom shedding mechanism. STAUBLI, H., STAUBLI, jun., H., STAUBLI, R., and STAUBLI, H. H., (trading as STAUBLI & CO., GEB.) Oct. 15, 1936, No. 28006. Convention date, June 17. [Class 142 (i)] A spring reverse motion for looms comprises a lever g that is connected to the shaft by means of a cord l and to the spring a by means of a link e and a two-armed lever c, both levers c, g, and the spring anchorage b having a number of notches to facilitate adjustment. In a modification the lever c has a number of bearing places for the pivot d.
Patent GB-705332-A (GB)
Title: Improvements in and relating to colouration by vat dyestuffs
Inventor: URQUHART ALEXANDER ROBERT
IPC: D06P1/22
Filed: 1951-11-29
Abstract: Cellulose acetate is dyed in an aqueous dyebath under non-swelling conditions with certain vat dyestuffs which have been reduced under non-alkaline conditions in the presence of pyridine, the amount of pyridine being such that the swelling of the cellulose acetate is only substantially the same as the swelling in water alone.  The vat dyestuffs used are indigo and thioindigo and their derivatives, halogenated indirubines, dinaphthindigoid compounds, acyl aminoanthraquinones, pyranthrones, benzanthrones, anthraquinonyl amines, and carbazoles containing more than one anthraquinone nucleus, but dyestuffs containing a single anthraquinone nucleus linked at two adjacent carbon atoms to a second cyclic residue through a heterocyclic grouping are excluded.  It is preferred to prepare the reduced vat in concentrated form and to add this to the dyebath, and if the acidity normally developed during dyeing becomes considerable, a weak alkali such as ammonia may be added to bring the bath nearer to neutrality.  In examples, (1) Durindone Blue 4BCS is reduced with sodium hydrosulphite while adding pyridine, and the concentrated vat is added to a dyebath and used for dyeing cellulose acetate fabric, the dye being subsequently developed on the fabric by means of a solution of sodium perborate; (2) cellulose acetate fabric is dyed in a bath made from a vat concentrate made by mixing Caledon Golden Yellow GKS, water, sodium hydrosulphite and pyridine, and is finally developed by means of a solution of sodium perborate. Specification 320,978, [Class 15(2)], is referred to.
Patent GB-711896-A (GB)
Title: A double twisting spindle with a compound spindle shaft
IPC: D01H7/86
Filed: 1952-11-07
Abstract: 711,896. Double-twist spindles. BARMER MASCHINENFABRIK AKT.-GES. Nov. 7, 1952 [Nov. 10, 1951], No. 28152/52. Addition to 696,611. Drawings to Specification. Class 120(2) The double twist spindle set forth in the parent Specification has at least one of the slots in the sleeve provider with a widened portion which allows the thread guiding ring to be installed and removed when the spindle shaft parts have been fitted together.