baber/WOPTO huggingface dataset:
Patent GB-427497-A (GB)
Title: Improvements in and relating to the production of hydrated basic sodium metasilicate
IPC: C01B33/32
Filed: 1933-10-25
Abstract: A crystalline basic sodium silicate corresponding to the formula Na2SiO3.NaOH.5H2O is obtained by cooling a hot concentrated solution of sodium metasilicate containing more than 23 grams of NaOH per 100 c.c. in excess of that corresponding to the above formula.  The practical upper limit of the excess of NaOH is about 55 grams per 100 c.c.  The solution can be made by mixing concentrated aqueous NaOH with a sodium silicate solution containing excess silica at a temperature sufficient to prevent premature crystallization.  The preferred concentration is from 35--40 per cent by weight of Na2SiO3.NaOH.5H2O. In an example 50 per cent caustic soda is added to a sodium silicate solution at 80 DEG  C. until the excess is 33 grams per 100 c.c.  The solution is cooled to 25 DEG  C. and the crystals freed from mother liquor which is re-used.  Crude crystals obtained by the present process are contaminated with adhering mother liquor and are treated with a calculated amount of sodium silicate solution containing silica in excess of that corresponding to the formula Na2SiO3.NaOH, preferably about a 100 per cent molecular excess, which excess silica neutralizes the excess caustic soda in the mother liquor.  If the quantity of water is not too great the whole of the double salt crystallizes as a hydrate or mixture of hydrates which can be air-dried. Specification 427,496 is referred to.
Patent GB-269091-A (GB)
Title: Back-light for cycles and similar vehicles
IPC: B62J6/20
Filed: 1926-11-23
Abstract: 269,091. Bal, C. W., and Naamlooze Vennootschap Plaatmetaal-industrie van Mouwerik & Bal. Nov. 23, 1926. Reflectors. -A rear light for cycles &c. comprises a reflector 9 clamped against a cup 3 shaped to fit on the interior of a. mudguard &c., the bottom of the cup 3 being fitted with a screw bolt for securing purposes. A sheet of red glass 4 covers the reflector and is situated behind a faceted lens 7, as shown.
Patent GB-1009350-A (GB)
Title: Process for the production of soft polyvinyl chloride expanded plastics
IPC: C08J9/00
Filed: 1962-08-02
Abstract: In a process for the production of soft polyvinyl chloride expanded plastics from a polyvinyl chloride paste containing an expanding agent and a plasticizer, with the use of an additive which increases viscosity, the expansion being effected at 150-200 DEG  C., a highly disperse silica powder which contains 99.9% SiO2, has an effective internal surface of 300 to 350 m2/g and a particle size of 15 to 20 mm  is used as said viscosity-increasing additive in amount 0.1 to 3% by weight of the polyvinyl chloride paste.  Conventional expanding agents, e.g. diphenylsulphone-3,31-disulphohydrazide or azodicarbonamide and plasticizers, e.g. phthalate esters of alcohols with 6 to 10 DEG  C. and adipic and sebacic acid esters may be used. In a typical Example (1) a polyvinyl chloride paste containing dinonyl phthalate and diphenylsulphone - 3,31 - disulphohydrazide and silica added and the mixture expanded in the form of a layer at 165-175 DEG  C.ALSO:In the production of artificial leather (Example 4), there is applied to a fabric which repels polyvinyl chloride (P.V.C.), (release fabric or paper), a P.V.C. covering layer containing dinonyl phthalate, dioctyl phthalate, whiting, TiO2, a colour pigment (e.g. iron oxide brown), and a stabilizer.  A P.V.C. paste of the above composition unit containing in addition an expanding agent and silica is applied to the P.V.C. covering layer, and a tangled fleece is laid thereon.  The three layers are gelled at 165-175  DEG C. and after cooling the artificial leather is stripped off from the release fabric or paper.
Patent GB-1091846-A (GB)
Title: Electric motor control circuit
IPC: H02P7/292
Filed: 1965-07-13
Abstract: 1,091,846. Control of A.C. motors. MOTOROLA Inc. July 13, 1965 [Sept. 22, 1964], No. 29675/65. Heading H2J. In a control system for a series wound universal motor 11 energized with A.C., in which the mean applied voltage is determined by the firing angle of a thyristor 23 connected across a rectifier bridge in series with the motor, the firing angle is automatically adjusted in response to load current so as to compensate for variations in the load. The firing circuit comprises a relaxation oscillator in which a capacitor 36 is charged by the voltage across a resistor 24 carrying motor current during the conducting period of the thyristor. When conduction stops at the end of a half-cycle the charging voltage jumps to a value set by a Zener diode 26 so that charging proceeds at a rapid, constant rate until the conduction voltage of a unijunction transistor 29 is reached which, in turn, fires the thyristor. A switch 50 permits half-wave operation.
Patent GB-188529-A (GB)
Title: Improvements in and relating to motor-vehicles
IPC: B60G11/42
Filed: 1921-11-08
Abstract: 188,529. Imray, O. Y., (International Motor Co.). Nov. 8, 1921. Non-metallic joints and connections.- Relates to means for connecting the parts of an automobile one with another, such for instance as the springs and the frame. The connection is effected through the medium of a non-metallic stiff yielding imperforate block, the basis of which is rubber. This block is interposed betwen the two metallic parts to be connected, being secured positively under compression to one of them, and having an independent connection with the other. In the example shown, the end of the spring a enters a cavity in the block c, which is clamped in a two-part housing d, d<1> attached to the frame member b.
Patent GB-1534005-A (GB)
Title: Method and apparatus for filtering sonic waveforms in well logging
IPC: G01V1/48
Filed: 1975-11-19
Abstract: 1534005 Well logging SCHLUMBERGER Ltd 19 Nov 1975 [27 May 1975] 29841/78 Divided out of 1534004 Heading G1G The subject-matter of this Specification is identical with that described in Specification 1534004, but the claims are concerned with a particular method of correlation and subsequent filtering Fig. 29 (not shown) to remove casetransmitted noise.
Patent GB-1309976-A (GB)
Title: Storage and dispensing container for sheet material
IPC: B65D83/08
Filed: 1971-06-25
Abstract: 1309976 Dispenser; dispensing package MILLIPORE CORP 25 June 1971 [6 July 1970] 29856/71 Headings B8C and B8P A dispensing package comprises a stack 12 of filter papers seated in a tray 16 and covered by an apertured paperboard sheet 50, and an outer container 18. An aperture 24 formed in the top panel 22 of the container 18 and closable by a sliding cover 20, permits engagement of the uppermost filter paper or group of filter papers for urging it through a dispensing gap between the tray and top panel 22. The front wall portion 44a of the tray is inclined to guide the papers upwards towards the dispensing gap. Individual or groups of filter papers 14 are sandwiched between sheets of glassine paper 15. The sheet 50 is keyed for limited movement within the tray 16. In the embodiment shown in Figs. 1 and 2 the filter sheets are dispensed by finger pressure through the apertures 24 and 54; in alternative embodiments an internal pressure pad operable externally of the package or a finger-manipulated roller may be used to urge the filter papers towards and out of the dispensing gap. The dispensing gap may be closed by a barrier card comprising tabs 62 which are interposed between the stack 12 and the wall portion 44a, and tabs 64 which overlie the apertured sheet, 50. The package may be shrink-wrapped or taped across the open dispensing end of the container.
Patent GB-1439002-A (GB)
Title: Printing
IPC: B41M1/06
Filed: 1973-06-22
Abstract: 1439002 Lithographic printing processes VICKERS Ltd 4 Sept 1973 [12 Sept 1972 22 June 1973] 29917/73 and 40335/73 Divided out of 1438634 Heading B6C A method of lithographic printing comprises applying water and ink to the relevant receptive areas of the surface of a litho printing plate and providing a pair of electrodes spaced by electrically insulating material in the surface of a monitoring zone which is located to receive water during printing and determining the amount of water present on the material as a function of the electrical resistance between the electrodes. The monitoring zones may be located on the plate or elsewhere such as a roller of the damping train. The resistance may be measured using a phase sensitive detector or by comparing the same with the resistance of a reference cell containing as electrolyte the water applied to the water receptive areas of the plate. The ink used in the printing may also be measured and controlled. The method may be incorporated in a machine using a closed loop control system, see Fig. 9 (not shown).
Patent GB-148089-A (GB)
Title: Improvements in or relating to small arms
IPC: F41C23/16
Filed: 1919-12-01
Abstract: 148,089. Payne, O. V., and Auto-Ordnance Corporation. Dec. 1, 1919. Stocks.-Consists in a hand-grip disposed beneath the. barrel, and having a lip slidable rearwardly for assembling into a recess in the receiver. The invention is illustrated as applied to the automatic pistol described in Specifications 148,022, 148,023, 149,451, and 149,452. The grip G', of hard wood, rubber, or like material, is disposed beneath the barrel B, and is fitted with a metal plate 54 having a lip 55 fitting into a shouldered recess 56 in the receiver R. In assembling, the grip is screwed to a lug 62 on the cooling-tube T, which is then slidden rearwardly upon the barrel until the lip 55 is seated in the recess 56. A spring plunger 57, held in its recess in the receiver by its spring, holds the grip in position, and a lug 61 engaging the barrel assists in rendering the arrangement rigid. In a modification, the plate 54 has a depending fin round which the rubber grip is moulded and the screw 63 is replaced by a lug on the plate 54 entering an opening in the tube T. In a further modification, the lug 61 extends into the receiver in stead of into the barrel.
Patent GB-758237-A (GB)
Title: Improvements relating to aerials
Inventor: BEST NORMAN MAXWELL
IPC: H01Q9/44
Filed: 1954-10-18
Abstract: 758,237. Aerials. ANTIFERENCE, Ltd., and BEST, N. M. Oct. 18, 1954, No. 29948/54. Class 40 (7). An aerial arrangement comprises four elements extending in a common plane from a common centre, two of the elements extending along a common axis and the other two being on the same side of this axis and preferably symmetrically arranged about the perpendicular to the axis through the common centre. Fig. 2 shows schematically one embodiment of the invention wherein elements 1, 2, 3 and 4 are conductive rods supported in a central insulating junction box 5 inside which the connections between them and to the feeder 6, 7 are made as shown. The elements need not consist of a single rod or tube but may be a plurality of these arranged to lie on the surface of an imaginary cone. It is also possible to fold any or all of the elements and Fig. 3 (not shown) indicates how an embodiment may be made with one folded element whilst Fig. 4 shows an embodiment with all the elements folded. Specification 666,285 is referred to.
Patent GB-1507549-A (GB)
Title: Dehydrogenating c3-c8 alkanes
IPC: C07C5/393
Filed: 1975-07-17
Abstract: 1507549 Dehydrogenating C 3 -C 8  paraffins BRITISH PETROLEUM CO Ltd 5 July 1976 [17 July 1975 20 Nov 1975 11 June 1976] 30012/75 47829/75 and 24296/76 Heading C5E Olefins are produced by dehydrogenating C 3 -C 8  saturated hydrocarbons in the substantial absence of oxygen with a catalyst comprising elemental gallium or a compound of gallium deposited on a support, said deydrogenation being carried out without pre-reduction of the catalyst prior to contact with the feedstock. The support may be alumina, silica, activated carbon or refractory gallium oxide. Alumina and silica supports with surface hydroxy groups may have them ion-exchanged with gallium and optionally Al, Fe or Ni. The dehydrogenation may be carried out at 500-600‹C. and 1-20 atmospheres in an atmosphere of H 2 . Examples describe the preparation of propylene and butenes, using a Ga 2 O 3 /SiO 2  catalyst.
Patent GB-194745-A (GB)
Title: Improvements in or relating to the control of aircraft
IPC: B64C13/24
Filed: 1921-11-10
Abstract: 194,745. Vickers, Ltd., Vickers, O. H. D., and Ingoldby, M. K. Nov. 10, 1921. Steering and balancing.-A servo-motor for aircraft comprises a variable-delivery pump connected to a double acting ram having a variableleakage channel from one side of the piston to the other as described in Specification 188,944, the ram displacing the corresponding control surface to an extent depending on the pump delivery. By-pass connections from the rams to mechanism connected to the control levers enable the pilot to feel the controls. Means for cutting out the servo-motor control are provided. Fig. 1 shows diagrammatically three variable-delivery pumps A, A<1>, A<2>, of the kind employed in hydraulic gear of the Williams-Janney type, connected by pipes b, b<1> to three rams B, B', B<2> having pistons b<2> connected to the three control surfaces C, C<1>, C<2>. The pistons b<2> are normally retained in mid position by springs b<4>, and have leakage apertures traversed by choke rods b<6> giving a variable leak between the two ends of the cylinder. The strokes of the three pumps are varied by rods connected respectively to three levers g<3>, g<4>, g<5>, connected as shown to the pilot's controls G, G<1>, G<2>. By-pass connections l<1> from opposite ends of each ram transmit the working pressure of the fluid to three sets of opposed cylinders l acting upon the levers g<3>, g<4>, g<5>, so that the pilot may feel the resistance of the three controls. The pumps are driven from an aerial propeller F when the machine is in flight, and from an electromotor E when the machine is at rest. Fig. 2 shows diagrammatically the means for cutting out the servo-motor control and substituting direct control, and vice versa. The cables D' from the control lever G<3> are connected to the control surface and are passed around fixed pulleys d<5> and around pulleys d<3> which can be moved towards or away from one another. The cables D<3> from the ram B are passed around the pulleys d<3> and connected to the cables D<4>. Movement of the pulleys d' causes one or other of the cables D<4>, D<3> to become slack. According to the Provisional Specification, to compensate for any inaccuracies in the servo-motor mechanism, control surfaces having a small angular adjustment under the pilot's control may be used. Propelling; land wheels.-By means of valves J operated by a lever j the three pumps A, A<1>, A<2> may be disconnected from the rams and connected to three hydraulic motors H, H<1>, H<2> which may be used for starting the aircraft engine, working bilge or petrol pumps or for operating a retractable undercarriage. Each motor is separately controlled by a valve h<2>. A reservoir K is connected by pipes k to the pump and motor casings.
Patent GB-284812-A (GB)
Title: Improvements relating to winding keys for loose leaf binders, clocks and other purposes
IPC: B42F13/04
Filed: 1926-11-27
Abstract: 284,812. Morland & Impey, Ltd., and Coe, F. Nov. 27, 1926. Keys.-A winding- key for screw-operated loose-leaf binders, clocks, and other purposes, and adapted to transmit a limiting turning effort. comprises a spindle - engaging member c rotatably mounted on one end of a hollow crank-arm a, to the other end of which a handle b is secured, the member c being caused to turn with the parts a, b by means of a block e pressed against the member c by a spring f so that slipping occurs when the resistance to turning exceeds a certain limit. The member c consists of a tubular part secured to a reduced cylindrical portion on a solid piece d projecting through the crank a and having its end riveted over, the part of the piece d within the crank being square in section and engaged by a V-notch on the block e.
Patent GB-1311305-A (GB)
Title: Thermoplastic moulding compositions on the basis if polyacetals
IPC: C08L55/02
Filed: 1970-06-22
Abstract: 1311305 - Oxymethylene polymer/two-phase polymer mixture composition FARBWERKE HOECHST AG 22 June 1970 [20 June 1969] 30089/70 Headings C3G and C3P A composition comprises (a) a stabilized homopolymer of formaldehyde or a stabilized homo- or copolymer of trioxan with a cyclic ether or acetal optionally also with an alkyl glycidyl formal, polyglycol or alkane diol diglycidyl ether or a bis-(alkane-triol) trifoimal and (b) a two-phase mixture of (i) a butadiene or acrylate homo- or copolymer thereof with each other or with styrene or acrylonitrile or a graft copolymer thereof with styrene, alphamethylstyrene, acrylonitrile or methyl methacrylate, and (ii) a homo or copolymer of styrene or alphamethylstyrene with acrylonitrile or polymethylmethacrylate. In examples, (a) is polyformaldehyde esterified with acetic anhydride, or a hydrolytically degraded (stabilized) trioxanethylene oxide copolymer, and (b) is a mixture of preformed latices of styrene-butadiene and styrene-acrylonitrile copolymers, or a mixture of polybutadiene, an acrylonitrilestyrene grafted polybutadiene and a copolymer of styrene and acrylonitrile obtained by a two stage polymerization.
Patent GB-465064-A (GB)
Title: An improved method of construction for soundboards of pianofortes and like musical instruments
IPC: G10C3/06
Filed: 1935-11-01
Abstract: 465,064. Pianofortes. BISHOP, F. A. Nov. 1, 1935, No. 30149. [Class 88 (ii)] Vibratory movement of a soundboard 101 is controlled by a centrally disposed ring R and a number of radiating bars 1, rigidly interconnected and superimposed in the space inside the ring, and having their outer ends rigidly attached to a rim, glued to the soundboard. Some of the bars may terminate at the inner circumference of the ring. The Provisional Specification states also that two main bars at right-angles to each other may be curved, so as to curve the surface of the soundboard, and that the ring may be elliptical or polygonal.
Patent GB-1019733-A (GB)
Title: Improvements in aircraft landing systems
IPC: G06G7/78
Filed: 1962-08-07
Abstract: 1,019,733. Radio navigation. CUTLER-HAMMER Inc. Aug. 7, 1962 [Sept. 22, 1961], No. 30187/62. Heading H4D.  Relates to aircraft radio navigation systems for landing utilizing transmissions from airfield ground beacons as described in Specifications 940,509 and 1,014,633,. a transmitter at site 1 Fig. 1, adjacent to runway 10 providing a fixed or sweeping elevation beam 11 and a transmitter at site 2 providing a coded narrow beam 13 sweeping in elevation. According to the present invention the aircraft carries a computer which establishes a switch-over point 19 between normal glide path 18 and flare-out path 17, computes equations incorporating angular and angular rate of change elements, and produces an error signal (for a flight director or automatic pilot) representing departure of the aircraft from flare-out path having a fixed terminal range for landing. In one embodiment, Figs. 1 and 3, it is stipulated that the switch-over should occur when a time # max  equals (a - b) - b (Fig. 1) and this equation is solved by means of units 32, 36, 37, 37<SP>1</SP>, 38, 41, 42 and 44 (Fig. 3); at the switch-over point unit 44 triggers a linear time base generator 46 to calculate an expression by means of the units illustrated; # max  is the time at which switch-over point 19 (Fig. 1) occurs, # is the time left to go to the touchdown condition, point 21, and t is time elapsed after switch-over, the equation relating them being # = # max-  t. A constant of proportionality C may be used with expression (1) to allow for differing aircraft flight characteristics. In another embodiment an error signal representing angular deviation from the prescribed flare-out path is derived, Fig. 4 (not shown). In a further embodiment the prescribed flareout path (Fig. 2) is of modified exponential form: where k 2  is a predetermined constant. The corresponding computer is illustrated in Fig. 5 (not shown). The Specification includes mathematical treatments.
Patent GB-600878-A (GB)
Title: Improvements in and relating to flatirons
IPC: D06F75/40
Filed: 1945-11-12
Abstract: 600,878. Hand-irons. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 12, 1945, No. 30203. Convention date, Nov. 14, 1944. [Class 138(ii)] A flat-iron comprising a heat-imparting body 1 with a rigidly-connected sole-plate 2 and handle 5 has the rear end of the handle so shaped as to constitute a rest upon which the iron can be tilted back to position the sole-plate at a fixed angle of less than 90 degrees with the plane supporting surface for the iron, the handle being adapted to contain a weight 13 which is so placed as to assist the downward pressure of the iron when in use and to ensure its stability when in the position of rest. The rest comprises an enlargement 11 projecting from the rear handle standard 8, and a protuberance 12 on the enclosing shell 4 of the body 1; alternatively, the rear of the handle may constitute a single inclined rest surface. The weight 13 may be of lead and placed in a hollow chamber formed in the rear handle standard 8, or, instead of being concentrated in this standard, it may extend longitudinally through the main por tion 6 of the handle.
Patent GB-207819-A (GB)
Title: Improvements in coolers for bottles and like vessels
IPC: F25D3/08
Filed: 1923-11-30
Abstract: 207,819. Blom, A. Nov. 30, 1922, [Convention date]. Bottle - coolers; receptacles provided with cooling-means.-A bottle 2 fits closely against an internal rib 3 of a metal or earthenware jacket 1 traversed by cooling-liquid, which takes a tortuous, path. Ice &c. may be placed in a dished cover 4, the resulting liquid flowing through a hole 5 in the cover to the space around the bottle, from which it escapee through a .small hole 7 at the bottom and a larger hole 6 at the top. The Specification as open to inspection under Sect. 91 (3) (a), comprises also the following :- For cooling a food container, the container has a cover projecting beyond the vessel whereby the cooling water is distributed away from the vessel. The container may be prevented from floating by arms projecting therefrom engaging hooks on the outer vessel. The bottom of the receptacle may have cooling gills or ribs. This subject-matter does not appear in the Specification as accepted.
Patent GB-231785-A (GB)
Title: Improvements in or relating to lamps
IPC: F21V17/00
Filed: 1924-12-16
Abstract: 231,785. Sprott, E. W. Dec. 16, 1924. Vehicle and like lamps; convertible gas and electric lamps; mounting electric lamps in lanterns.-A vehicle or like lamp comprises a casing a having a single socket d, preferably provided with bayonet slots, into which the bracket m of an acetylene, or other gas burner l, Fig. 2, or an electric incandescent bulb s, Fig. 1, can selectively be fitted, the casing having a fixed reflector r, such as a Mangin mirror, for use with the burner l and a removable parabolic reflector t for use with the bulb s. The reflector t is pushed into position against the action of leaf springs u and is held away from the reflector r by a resilient device such as a spring v. The socket d is carried by a tube c which slides in a boss b secured to the casing and a rearwardly extending sleeve h and is moved backwards and forwards by a stud g, the lamp bracket extending between fianges i formed on both the boss b and the sleeve h. The gases of combustion escape through one or more vents q.