baber/WOPTO huggingface dataset:
Patent GB-584549-A (GB)
Title: Improvements in the construction of electric condensers and resistors
IPC: H01G2/12
Filed: 1944-08-02
Abstract: 584,549. Condensers; resistors. BRITISH INSULATED CABLES, Ltd., and QUAYLE, J. C. Aug. 2, 1944, No. 14772. [Class 37] A condenser or resistor is provided with a tightly fitting skin of plasticized or unplasticized polyvinylidene chloride. For example, a plasticized polyvinylidene chloride strip 1, which has been stretched lengthwise in manufacture and wound into a roll 2, is joined at one end to condenser casing comprising an impregnated paper tube 3 with metal end caps 4, and wound thereon by rotating the casing between clamping heads 6. The overlapping portions of the strip are then joined and the remaining strip is cut away. The joining of these portions and of the strip to the casing may be effected by heating and smoothing or by an adhesive such as a solution of polyvinylidene chloride and polyvinyl chloride in cyclohexanone. The covered condenser is then heated to about 200‹C. for 5 to 15 minutes to tighten the covering, the over hanging ends of which collapse and adhere to the end caps 4. The covering may also be applied in tubular form or by moulding.
Patent GB-216698-A (GB)
Title: Improvements relating to wind musical instruments
IPC: G10D9/04
Filed: 1923-06-07
Abstract: 216,698. Maurice, F. June 7, 1923. Brass and like wind instruments in which the valvepistons are returned by springs under tension, have the springs mounted with initial tension so as to ensure a quick return. The collar h, through which the valve-stem d slides, and to which and to a collar c on the valve the spring is secured, the ends of the spring being passed on to threads thereon, is adjustable to vary the tension of the spring. The piston is prevented from rotating by a pin k and groove j.
Patent GB-456966-A (GB)
Title: Improved apparatus for pressing together parts of wood or similar material, more particularly for shaping and uniting wood plies and veneering
IPC: B27D1/08
Filed: 1935-04-16
Abstract: 456,966. Built-up boards. WEIR, G. D., 37, Burrindi Road, Caulfield, Victoria, Australia. April 16, 1935, No. 14983/36. Convention date, April 21, 1934. Divided out of 456,896, [Group XVI]. [Classes 145 (i) and 145 (ii)] [See also Groups XVI and VIII] Apparatus for pressing together parts of wood or similar material, such as door sections, wood plies, veneers and the like, for the purpose of cementing them together or for making one part conform to the shape of another, comprises a casing adapted to be connected to vacuum producing means, the casing being airtight except for the top which is extensively perforated and constitutes a flat table, a ribbed or grooved base-plate which is disposed on the table to receive the parts to be pressed together, and a resilient moulding member or bag which is adapted to be placed over the table base-plate and parts thereon and to forcibly engage with and conform to the shape of these parts under the action of vacuum acting through the perforated table. The perforated table 50 forms the top face of a casing 51 and has a ribbed base plate 54 mounted thereon, upon which is supported the wood sections or other parts to be united or shaped. A hinged frame 57 supports the resilient moulding member or bag 58, which is similar in construction to the moulding member described in Specification 456,896, which is referred to, and a hinged cover 61 is provided carrying an electric heater. A cross-head 63 carrying a flat pressure member 64 and operated by pistons 65 may be provided, and two spaced cramps 67 may apply pressure to the abutting ends of wooden sections which are to be united, the cramps being moved inwardly by pistons 69. Vacuum storage compartments 59 and a combined vacuum and compressed air pump 71 suitably connected by valve-controlled pipes with the compartments 51, 59, and the cylinders 66, 70 for operating the pistons 65, 69, are provided. In operation, the previously glued wooden sections &c. are supported on the base-plate 54, the resilient member 58 is arranged thereover, and pressure is applied by placing the chamber 51 in communication with the vacuum storage compartments 59, after which the pump 71 is started to apply an increased pressure to the glued wooden members to be united while the cover 61 is closed so that the electric heater may maintain the glue in a fluid condition. The resilient member 58 conforms, under the action of the suction applied thereto, to the shape of the wooden sections and applies an intense and uniform pressure, which may be increased by means of the top and side pressure members 64, 67. One wooden board may be moulded to the shape of another by arranging the second board around the first, supporting the two on the base-plate 54 and arranging the resilient member 58 thereover so that, upon the application of suction, the resilient member presses the second member to the shape of the first.
Patent GB-529018-A (GB)
Title: Window or door actuating gear
IPC: E05F11/10
Filed: 1939-05-19
Abstract: 529,018. Window operating gear. CRITTALL MANUFACTURING CO., Ltd., and WALKER, F. P. May 19, 1939, No. 15001. [Class 20 (iii)] [Also in Group XXV] Windows are operated by a spindle 4 carrying a pin 11 which, during the initial rotation of the spindle, engages a cam 10 on a sleeve 9 carried by a loose pinion 3, and slides the latter back on the spindle to disengage a brake 6, after which which further rotation of the spindle rotates the pinion through' the cam and moves a rack 1 connected to the door &c. In another form the cam is in the form of an aperture in the sleeve 9.
Patent GB-1211712-A (GB)
Title: An improved draft sensing assembly
Inventor: HULL CHARLES HARTLEY
IPC: A01B63/112
Filed: 1967-04-01
Abstract: 1,211,712. Tractor power lift mechanisms. DAVID BROWN TRACTORS Ltd. 13 June, 1968 [1 April, 1967], No. 15029/67. Heading A1P. A multiple-rate draft control assembly comprises a lever 14 acting via a plunger 30 on resilient means 33, pivotally housing the upper hitch link 10 of a three point linkage, and able to be fulcrumed at alternative points on the tractor so that it can function selectively as some or all of the three classes of lever. When connected, as shown, to lug 20 via parallel links 24 the lever 14 is of the second class suitable for light draft forces which produce movement of the plunger communicated via a Bowden cable to the power lift mechanism. The sensitivity is increased by attaching link 10 through holes 16 in the lever 14. When attached via links 24 to lug 21 the lever 14 is of the third class suitable, when the hitch link 10 is connected to holes 15, for normal draft forces, and when the hitch link 10 is connected to holes 16, for heavy draft forces. The lever may also be pivoted to acts as a first class lever.
Patent GB-476371-A (GB)
Title: Improvements in or relating to means for maintaining a constant cylinder compression-ratio in internal combustion engines
IPC: F02B75/04
Filed: 1937-05-31
Abstract: 476,371. Cylinders. BATHGATE, J. May 31, 1937, No. 15046. [Class 7 (ii)] In a multicylinder engine, the compression ratio is kept constant by auxiliary pistons C in the cylinder heads, which are moved in unison by engagement of pins P thereon with inclined slots in a transversely sliding bar D. The bar is connected to the piston G of a dash-pot F, subject to induction pipe suction, and is adjustably loaded by a spring H.
Patent GB-250421-A (GB)
Title: Improvements relating to grates with which or on which fuel travels
IPC: F23H11/00
Filed: 1925-06-10
Abstract: 250,421. Bloxam, A. G., (Nyeboe & Nissen). June 10, 1925. Mechanical stoking. -Grates with which or on which the fuel travels are provided in front of the usual clinker dam with a plate lying across the grate and receiving reciprocating movement transversely to the direction of travel of the fuel so as to keep the clinker in constant movement and prevent it building up. The iron plate B2 lies on the travelling grate A and is connected with a bellcrank lever D which is oscillated by a reciprocating rod C. Another reciprocating plate B1 having a serrated front edge may be fitted in front of the plate B2. The plates may be cooled by water or air passing through them; air thus heated may issue through slots in the plate to contribute to the burning of the clinker. An undulating upper surface may be given to the plates.
Patent GB-1429407-A (GB)
Title: Interconnector for telephone units
IPC: H05K7/14
Filed: 1974-04-05
Abstract: 1429407 Component assemblies NORTHERN ELECTRIC CO Ltd 5 April 1974 [6 April 1973] 15169/74 Heading H1R [Also in Divisions H4 and H2] A telephone unit 66 (Fig. 14) is physically and electrically connected to another unit 65, such as a data input unit, by a two part connector 10, 30 (Fig. 13), one part being retained in the housing of each unit. The interengaging formations on each part interact to hold the parts together and thus hold the units together. Connecting cables between the units are avoided.
Patent GB-1138499-A (GB)
Title: Method and apparatus for injection moulding
IPC: B29C45/46
Filed: 1966-04-05
Abstract: 1,138,499. Injection moulding. GENERAL TIRE & RUBBER CO. 5 April, 1966 [30 April, 1965], No. 15171/66. Heading B5A. During injection moulding an injection sprue 7 and orifice 7a are sealed after the injection stroke by a piston operated flat, circular and flexible diaphragm 27, the diaphragm then being further flexed pneumatically to compress liquid plastics material in mould cavities 6 and runners 24 thereto to expel entrained air therein. The diaphragm, of P.T.F.E., is held at its periphery between plates 20, 22 which form a central chamber 23 in which the diaphragm is located. The diaphragm is moved upwardly to close the orifice 7a by a pneumatically operated piston 26, at a pressure of 100p.s.i., while the further flexing of the diaphragm is also effected pneumatically at 75 p.s.i. through a pipe 31 communicating with a passage 32 opening to the chamber 23 below the diaphragm. Removal of a moulded article is effected by retracting a core plate 9 to remove from the cavity 6, a core 14 with the article attached thereto. A stripper plate 17, stripper rings 19 and plate 20 also retract with the plate 9 until bushings 11 engage a stop (not shown), thereby arresting plate 17, which then engage rings 19 which prevent further movement of the article with the core, and slide the articles therefrom.
Patent GB-1427697-A (GB)
Title: Process for producing cross-linked propellants
IPC: C06B45/10
Filed: 1969-08-12
Abstract: 1427697 Propellants HERCULES Inc 12 Aug 1969 15323/68 Heading C1D A solid propellant is made by mixing nitrocellulose, a solid oxidizer, a metal fuel, a plasticizer, and a diisocyanate blocked with phenolic end groupings, and then curing the mixture under conditions to effect unblocking of the diisocyanate and cross-linking of the nitrocellulose. Non-porous propellants may be formed even in the presence of small amounts of water. Many examples of suitable diisocyanates and substituted phenol blocking agents are given. In examples the ingredients are nitrocellulose, nitroglycerine, ammonium perchlorate, metallic aluminium, resorcinol, MnO 2 , 2-nitrodiphenyl amine, dibutyl tin diacetate catalyst, and a prepolymer of polyglycol adipate and tolylene diisocyanate blocked with m-nitrophenol. Other ingredients referred to are ammonium, alkali metal and alkaline earth metal nitrates, chlorates, perchlorates, chromates, dichromates, and permanganates, RDX, HMX, PETN, dipentaerythritol hexanitrate, ethylene dinitramine, nitro-oxanilides, mannitol hexanitrate, nitroguanidine, TNT, lead dinitroresorcinates, further specified nitrate esters, triacetin, tributyl phosphate, beryllium and zirconium.
Patent GB-555184-A (GB)
Title: Improvements in or relating to water bottles or like containers for use with rafts, life boats, dinghies and the like
IPC: B63C9/02
Filed: 1942-11-02
Abstract: 555,184. Water bottles &c. WEBSTER LAMP CO., Ltd., and WEBSTER, E. Nov. 2, 1942, No. 15378. [Class 66] A water container for attachment to a raft &c. consists of a can provided with filling and drinking orifices 3, 4, closured by screw caps with chain attachments, the drinking orifice being formed on a tube 8 extending to the bottom of the vessel so that the contents are obtained by siphoning action. The can is attached to the raft &c. by a lanyard passed through a loop 14 formed on the handle extension 13.
Patent GB-1403501-A (GB)
Title: Prostaglandins and the preparation thereof
IPC: C07D307/935
Filed: 1973-03-30
Abstract: 1403501 Silylated prostadienoates UPJOHN CO 30 March 1973 [27 April 1972] 15426/73 Heading C3 [Also in Division C2] Methyl 9-oxo-11αa,15α-bis-(trimethylsilyloxy)- cis-4, trans-13-prostadienoate is prepared by oxidizing methyl 9α-hydroxy-11α,15α-bis-(trimethylsilyloxy)-cia-4, trans-13-prostadienoate resulting from the silylation of methyl 9α,11α- 15α-trihydroxy-cis-4, trans-13-prostadienoate. Trimethylsilyl 9α,11α,15α tris-(trimethylsilyloxy)-cis-4, trans-13-prostadienoate is obtained by silylating 4,5-cis-didehydro-PGF 1 α.
Patent GB-458861-A (GB)
Title: Improvements in thermionic valve systems
IPC: H03F3/52
Filed: 1935-05-27
Abstract: 458,861. Valve circuits. BAIRD TELEVISION, Ltd., WHITE, G. W., and BROWN, A. J., 58, Victoria Street, Westminster, and WILLANS, P. W., Quality House, Quality Court, Chancery Lane, London. May 27, 1935, No. 15455. [Class 40 (v)] In a thermionic amplifier of the " cathodecoupled" type, grid current in one valve flowing through part of the output circuit of the preceding stage is opposed by the anode current in that output circuit. The Figure shows a television transmitting amplifier comprising three cathode-coupled amplifiers 1, 11, 14 and a push-pull modulating stage 15, 16. The grid of valve 11 is biassed slightly positive, the resulting grid current flowing through resistances 6, 7, in opposite sense to the anode current of valve 1 ; the resulting p.d. across 6 due to grid current reduces the negative bias of valve 1 and increases the anode current, and the drop in p.d. across resistance 7 increases the anode voltage applied to 1 from source 8 with the same result. The action of the valves 14 and 11 is similar, the grid bias potentials being obtained by tappings 9, 12 and earth tapping 21 on a floating battery 10. The valves 15, 16 operate in quiescent push-pull, radio-frequency oscillations being injected into the tuned grid circuit 17 from 18. The effect of grid current in these valves on the oscillator and modulation systems is counteracted by a reduction in negative bias of valve 14 and increase in its applied anode voltage due to reduced voltage drop in resistance 19. Specification 457,827 is referred to.
Patent GB-1489838-A (GB)
Title: Grading and dewatering screens
IPC: B01D29/00
Filed: 1975-04-15
Abstract: 1489838 Forming elastomeric screens T C ADAMS 14 April 1976 [15 April 1975] 15485/75 Headings B1D and B2H An elastomeric, e.g. polyurethane, screen or screen liner for a grading or dewatering apparatus is formed by (i) placing face to face two sheets 3, 5 of elastomeric material, at least one of which is to form the screen or screen liner; (ii) punching apertures 6 through both sheets; and (iii) separating the sheets to form at least one screen or screen liner sheet having apertures which taper from one face to the other. Two screens may be formed by punching through identical sheets as shown in Figure 3. Alternatively, the backing sheet may be waste material or material of different elastic properties, hardness and/or thickness. A further backing sheet may be applied to the top face of the screen-forming sheet before punching. The apertures may be formed in more than one punching stage. The elastomeric sheet material may contain openwork reinforcing elements. By use of a relatively thin backing sheet, the apertures in the screen may be formed to have an angle of taper of substantially zero at their narrow end. The screens or screen liners may be used in grading apparatus, e.g. for grading sand or gravel, or dewatering apparatus, e.g. for dewatering coal slurries. In either case the screen may be inclined and/or oscillated. The screen may be flat or curved and may form part of a screen centrifuge.
Patent GB-1456810-A (GB)
Title: Device for briquetting loose materials
IPC: B30B11/02
Filed: 1975-04-16
Abstract: 1456810 Briquetting press KHARKOV AVIATSION INST 16 April 1975 15604/75 Heading B5A [Also in Division B3] A briquetting press for metal turnings, or granulated or particulate material comprises a housing 3 providing an actuating cylinder 9 for a plunger 12 and an explosion chamber 6 for powder or a fuel air mixture. The housing 3 is connected to an anvil 4 which defines a die 14 with a container 13 through which the plunger 12 is advanced. After compaction of the material 16 by the plunger 12 in the die 14, Fig. 2, the container 13 is moved rightwards with the plunger by auxiliary cylinders (19) in the anvil 4. In one embodiment, the container enters the cylinder 9 and the compacted material (18), Fig. 3 (not shown), is ejected from the container by the plunger 12 whose piston 10 abuts the end of the cylinder. A detent (21), Fig. 3 (not shown), restricts the movement of the container. The housing 3 and anvil 4 assembly are mounted on rollers 2 on the bed 1 to allow recoil of the assembly. In an alternative embodiment, the container 13 is moved over the cylinder 9, Fig. 5 (not shown), to eject the compact (18). The container 13 chamber 15 may be sealed by the cylinder and the anvil and evacuated or filled with inert gas. An electric heater 26, Fig. 4, can be provided in the container.
Patent GB-1042722-A (GB)
Title: Rotary piston internal combustion engine
IPC: F02B75/02
Filed: 1963-04-22
Abstract: 1,042,722. Rotary piston internal combustion engines. ISUZU MOTORS Ltd. April 22,1963 [April 24, 1962], No. 15710/63. Heading F1F. A rotary piston I.C. engine comprises an inner two-lobed epitrochoidal rotor 51, Fig. 3, and an outer three-chambered rotor, composed of elements 8, 9, 10, Fig. 2, bolted together. The rotors are geared together so that the outer rotor rotates in the same direction as but at two thirds the speed of the inner rotor, which is integral with shafts 52, 53 supported in bearings 56, 57 mounted in a fixed casing 54 through which air is circulated to cool the outer rotor. A fuel-air mixture mixed with a lubricant is admitted to the engine through a suction port 20 and passes to the variable volume chambers between the rotors through a space 21 between the meshing gears in the outer rotor and a port 22 in the inner rotor. Spent gases from the chambers pass to exhaust through a port 23 formed in the inner rotor and the shaft 3. Each chamber is provided with a combustion chamber 44 fitted with an ignition plug 43. The plugs are fired in timed sequence by means of a cam 46 on the shaft 2, a circuit breaker 45 and terminal 47, 48. Liquid coolant to cool the inner rotor is admitted through a port 28 passes into a chamber 30 in the rotor 1 and ducts 32 in the shaft 2 before leaving by a port 26. The liquid coolant urged outwardly by centrifugal force also lubricates the bearings 6, 7 and bearings 12, 13 supporting the outer rotor. Sealing strips 14 urged radially outwardly of axially extending slots in the outer rotor by springs 15 ensure constant contact between the two rotors. In carrying out the four-phase cycle of suction, compression, ignition and expansion, and exhaust for every three revolutions of the inner rotor one complete cycle occurs in each chamber corresponding to one firing per revolution of the inner rotor.
Patent GB-409907-A (GB)
Title: Improved self-opening screw-threading die
IPC: B23G5/12
Filed: 1933-05-31
Abstract: 409,907. Screwing die-heads. FILIERE UNICUM, 46, Rue de la Bienfaisance, Paris. May 31, 1933, No. 15732. Convention date, June 3, 1932. [Class 83 (iii).] A screw-cutting die-head having four chasers has at least two diametrically opposed chasers axially adjustable so that by adjusting these two chasers by half a pitch in opposite directions a die-head for cutting right-hand threads may be adapted for cutting left-hand threads, and vice versa, As applied to a transversely wedged die-head the chasers 67 are axially adjustable on their carriers 51-54, the carrier 51 being provided with a slot 62 engaging a lug 61 on a nut 55 threaded on a screw 63 rotatable within a bracket 56. The bracket is slidably guided between the two covers of the head by means of a pin 57 and by its cylindrical end 56<1>, and it is actuated to open and close the head through an eccentric 65 operated by a lever 34. Rotation of the screw 63 adjusts the cutting diameter of the head. In order to adapt the head for cutting either right or left hand threads, two diametrically opposed chasers are displaced axially in opposite directions by means of screws 70 whose ends engage the sides of recesses 69, Fig. 3, in the carriers and which screw into slides 68 on which the chasers are mounted. It is also necessary to reverse the die-head in the machine, and to reverse its direction of rotation in changing from one hand to the other, The lever 34 is rotated in the opposite direction to the rotation of the head in order to open the dies so that the head may be opened automatically by a fixed projection on the machine engaging this lever.
Patent GB-124674-A (GB)
Title: Improvements in Hot-water Circulators.
IPC: F02N19/10
Filed: 1918-09-27
Abstract: 124,674. Fletcher, Russell, & Co., and Banks, W. Sept. 27, 1918. Portable and small liquid-heaters. - Apparatus for maintaining a circulation of Lot water, especially through the radiators and cylinder jackets of motor - vehicles during frosty weather, comprises an outer casing a fitted with a baffle casing f which supports a water vessel c provided with flow and return pipes d, e, a burner g being fitted in the bottom of the casings a, f. Air is supplied to t h e burner through an opening k and the gauze bottom j of the baffle f, and is thus prevented from mixing with the products of combustion, which escape at o. Lighting apertures p, rare provided, the former being fitted with a door q. The openings k, o, s may be covered with wiregauze as a protection against fire.