baber/WOPTO huggingface dataset:
Patent GB-393899-A (GB)
Title: Improvements in and relating to vitreous materials
IPC: C03C3/06
Filed: 1933-01-26
Abstract: 393,899. Fused silica. B R I TIS H THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Devers, P. K. ; 6, Pierce Road, Lynn, Massachusetts, U.S.A.) Jan. 26, 1933, No. 2536. Convention date, Jan. 27, 1932. [Class 56.] A vitreous substance which may be used for making sparking-plug insulators, capsules for fire extinguishers, &c. is made by fusing a mixture of silica and a beryllium compound. Aluminium oxide may also be added to the mixture in order to make the fused product more readily workable. To make the substance, crystalline quartz and the mineral beryl are reduced to a very fine powder and are mixed, the proportion of beryl being from one per cent to ten per cent by weight of the mixture. Fusion is carried out in an electric furnace, suitable furnaces being described in Specifications 240,489, 268,780, [both in Class 56, Glass], and 375,500. The physical strength of an article made from the material may be increased by prolonged heat treatment at approximately the softening temperature of the material, about 1700 C.
Patent GB-395277-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F3/28
Filed: 1933-01-26
Abstract: 395,277. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Barton, L. E. ; 228, Burrwood Avenue, Collingswood,-New Jersey, U.S.A.) Jan. 26, 1933, No. 2572. Convention date, Jan. 30, 1932. [Classes 39 (i) and 40 (v).] Valves of the " class B " type with a high amplification factor and high internal impedance are used as audio-frequency or other power amplifiers, with low impedance in the input and output circuits, distortion being prevented by allowing grid current to flow, and the valves can be driven to the limits of their emission. A pair of valves 15, 15 of the type described is arranged as for push-pull working, the grid bias being preferably zero while the plate current in each valve is nearly zero at the working point so that each valve functions for only one half of the signal wave ; thus the grid-bias battery is eliminated and the plate voltage can be correspondingly reduced. To secure this result (which is illustrated in Fig. 3, where plate current is shown at 36, 45 and grid current at 43, 47, for zero and positive grid bias) valves with two control grids 33 at different levels are used, and the grids are connected together outside the tube as shown in Fig. 2, or inside the tube, Fig. 4 (not shown). In the latter case all the electrodes may be inside a single envelope, Fig. 5 (not shown), and Fig. 6. In the arrangement shown in Fig. 6 each pair of grids consists of the two layers 56, 57, of' a spiral wound on posts or pins which space the layers apart. A pair of coarse-meshed grids spaced apart in this way is preferred to a single fine-meshed grid, which gives somewhat similar results. In Fig. 2, pentode valves with screening grids 32 are shown. The signals are amplified at 24, 23 before being applied to the system, and the effective impedance of the input coil 16 is low in comparison with the internal gridcircuit impedance of the valve. The load on the transformer 20 is kept substantially constant by the flow of grid current. The transformer 19 steps down in the ratio 8 : 1 and the load impedance is small compared with the anodecircuit internal impedance of the valve.
Patent GB-561861-A (GB)
Title: Improvements in aminated chlorinated paraffins
Filed: 1942-02-27
Abstract: A chlorinated paraffin is treated with ammonia under pressure and at elevated temperature, the ammonium chloride which is formed is removed, the residual product diluted with water after neutralisation and insoluble material separated.  The most useful products are obtained by using chlorinated paraffins containing about three atoms of chlorine in the molecule.  In examples, chlorinated kerosene, hexane, dodecane and heptadecane are treated in an iron autoclave with liquid ammonia in the presence of methyl and ethyl alcohol, the ammonium chloride separated and the solvent distilled off.  After neutralising with hydrochloric acid, the aminated reaction product is boiled with water and, after standing, the insoluble portion discarded.  The free amino compound which still contains chlorine, liberated by adding caustic soda, is an insecticide and an inhibitor for use in pickling steel and may be distilled at reduced pressure. It is a wetting agent in acid systems, an anti-oxidant and an insecticide. In the form of its fatty acid salt it is a fungicide, emulsifying agent and a wetting agent for use in grinding pigments. Its carbon-bisulphide derivative is a rubber accelerator and fungicide.  The residue resulting from the distillation contains an acid soluble fraction which is a pickling inhibitor. Specification 339,962, [Class 2 (iii)], is referred to.ALSO:A chlorinated paraffin is treated with ammonia under pressure and at elevated temperature, the ammonium chloride which is formed is removed, the residual product diluted with water after neutralisation and insoluble material separated.  The most useful products are obtained by using chlorinated paraffins containing about three atoms of chlorine in the molecule.  In examples, chlorinated kerosene, hexane, dodecane and heptadecane are treated in an iron autoclave with liquid ammonia in the presence of methyl and ethyl alcohol, the ammonium chloride separated and the solvent distilled off.  After neutralising with hydrochloric acid, the aminated reaction product is boiled with water and, after standing, the insoluble portion discarded.  The free amino compound which still contains chlorine, liberated by adding caustic soda, is an insecticide and an inhibitor for use in pickling steel and may be distilled at reduced pressure.  It is a wetting agent in acid systems, an anti-oxidant and an insecticide. In the form of its fatty acid salt it is a fungicide, emulsifying agent and a wetting agent for use in grinding pigments.  Its carbon bisulphide derivative is a rubber accelerator and fungicide.  The residue resulting from the distillation contains an acid soluble fraction which is a pickling inhibitor. Specification 339,962, [Class 2 (iii)] is referred to.
Patent GB-1380022-A (GB)
Title: Railway signalling equipment
IPC: B61L23/00
Filed: 1973-01-18
Abstract: 1380022 Code conversions SOC TECHNIQUE POUR L'INDUSTRIE NOUVELLE SA 18 Jan 1973 [18 Feb 1972] 2663/73 Heading G4H Railway signalling equipment provided with electronic decoding means for decoding coded signals transmitted between two points in the equipment, stores the incoming coded signal, decodes it, and prevents passage of the decoded form onwards unless the incoming coded signal agrees completely with a coded signal generated from the decoded form of the incoming coded signal. The comparison may be repeated, passage not being prevented unless inequality is detected on each repetition. The coded signals each consist of several 2/5-coded digits. Passage is also prevented if a 2/5 check on either coded signal indicates error.
Patent GB-677467-A (GB)
Title: Improvements in or relating to textile draw-frames
IPC: D01H13/16
Filed: 1950-02-02
Abstract: 677,467. Stop motions, and alarm and signal devices for textile spinning &c. machines. DUNLOP RUBBER CO., Ltd., MOONEY, W. A., and HOWARTH, W. Jan. 22, 1951 [Feb. 2, 1950], No. 2692/50. Classes 120(ii) and 120(iii) In the operation of a stop-motion of a drawing frame, breakage of a sliver between the drafting rollers 3 and calender rollers (not shown) on the exit side of a condensing trumpet 6 results in an accumulation of sliver behind a plate 13 of a wireframe gate 10 which is thereby swung on its spindles 11 to actuate means for stopping rotation of the rollers 3: a projection 14 may complete an electric stop-motion circuit by contacting a frame cover 4 or by bridging two contacts and may also operate a visual or audible signal.
Patent GB-104206-A (GB)
Title: Improvements in and relating to Vehicle Wheels.
Inventor: MOORE WILLIAM JAMES PERRY
IPC: B60B3/08
Filed: 1916-02-23
Abstract: 104,206. Moore, W. J. P. Feb. 23, 1916. Disk wheels.-A pair of coned disks is secured to the rim and hub by shrunk-on rings, and may be braced by cross-bolts or an intermediate diagonal disk, or by means of a spring-ring which effects tensioning of the disks. In the form shown in Fig. 1, the flanged edges of disks 1, 2 are secured to the hub 4 and rim 6 by wire rings 5, 18 respectively, which are applied red-hot. The bracing-bolts 3 may be fitted with distance-sleeves 3<a>. In the form shown in Fig. 4, the inturned inner edges of the disks 32, 33 are secured to the brake drum 21 by shrunk-on rings 42, the similarly-formed outer edges of the disks being secured to the rim 6 by rings 41. The rings 41 are originally of larger diameter than the inner part of the rim 6 and are forced into the locked position shown, by side pressure. In the construction shown in Fig. 7, the disks 123 are again secured to the hub and rim by shrunk-on rings 131, 135 and are braced by a spring ring 139. The parts are so proportioned that the fixing of the disks effects compression of the ring 139, the resultant outward thrust of which sets up tension in the disks. Fig. 5 shows a diagonal bracing-disk 45 secured across the wheel by the rings 51, 52, which secure the main disks 43, 44. Specification 104,316 is referred to.
Patent GB-651865-A (GB)
Title: Improvements in or relating to lubricating means for bobbin shuttles for lace looms
IPC: D04C5/00
Filed: 1948-01-30
Abstract: 651,865. Lace-making. MARSHALL FIELD & CO. Jan. 30, 1948, No. 2821. Convention date, March 13, 1947. [Class 74 (i)] Lubricating means for bobbin shuttles for lace looms comprises an oil reservoir on a base member, a capillary oil conveyer extending into the oil reservoir and against the bobbin shuttle, and means whereby the conveyer is held, between its sides, on the base member. Bobbin shuttles 14 are lubricated by wick 30 dipping into oil reservoirs 25 carried on base members 21 to which the wicks are secured by bars 31 and screws 33. Each wick is kept in close contact with the shuttles which it serves by reason of the flexibility of flange 24 of its member 21. The reservoirs are of tubular form and have each a'slot 28 through which its wick passes.
Patent GB-878339-A (GB)
Title: Improvements in or relating to time switches
IPC: G04F3/02
Filed: 1958-01-28
Abstract: 878,339. Time switches. JUNGHANS A.G., GEB. Jan. 28, 1958 [Sept. 23, 1957], No. 2885/58. Class 38 (5). A switch actuating lever 63 has a pin 62 engageable by surfaces on two relatively adjustable cams 60, 61 in order to close the switch after a settable delay and to reopen the switch after a further, preferably settable, delay. The cam 61 is fixed to a bush 70 fast on a shaft 69a, the cam 60 being fixed to a bush 73 rotatable on a sleeve 72 fast on the shaft 69a. A friction disc 71 connects cams 60, 61 for rotation together when a clamping screw 78 is tightened, but when 78 is loosened, cam 61 may be adjusted relatively to cam 60 to set the " on " time. When 78 is retightened, knob 77 is rotated to set the delay period and wind up a driving spring (not shown). During running- down, the pin 62 is rocked inwards by surface 61b to close the switch, which is reopened when surface 60b engages the pin. The switch may have a snap-action hairpin spring (Figs. 19, 20, not shown). The disc 71 may be replaced by a bowed spring (Fig. 4, not shown), and the " on " time may be set by moving cam 60 relatively to cam 61, e.g. by a rack and pinion (Figs. 9, 10, not shown). If desired, the cams may be fixed together so that the " on " time is permanently fixed. The cams may be replaced by levers formed with cam-like lugs, and the drive to the cams or levers may be discontinued when the " off " time is reached.
Patent GB-547236-A (GB)
Title: Improvements in or relating to fluid actuated rock drills
IPC: B25D9/16
Filed: 1941-03-04
Abstract: 547,236. Fluid-actuated rock drills. INGERSOLL-RAND CO. March 4, 1941, No. 2916. Convention date, April 4, 1940. [Class 124] [Also in Group XXVI] In a fluid-actuated rock drill comprising inlet passages 45, 46 leading from a valve chamber 42 to the two ends of a piston chamber 22 containing a reciprocatory hammer piston 23, the flow of pressure fluid into the two inlet passages is controlled, respectively, by two valves 49, 61 within the valve chamber, the valve 61. encircling the valve 49, and the inlet pasages 45, 46 terminating in the same end of the valve chamber 42 at adjacent valve seats 51, 66. The valve chest comprises two members 39, 40, the latter being in the form of a sleeve and the former containing a plug 41 which extends into the member 40 to define the valve chamber 42 of which a rearwardly extending annular portion 43 lies between the periphery of the plug 41 and the encircling sleeve 40. Pressure fluid from a constant supply is conveyed by a rotary throttle valve 32 and a passage 30 to a chamber 29, which communicates with the valve chamber 42 by means of a passage 53 in the plug 41. The valve 49 has a flange 50 to seat upon the surface 51, the flange 50 being larger than the surface 51 so as to provide a peripheral area 52 constantly exposed to the fluid pressure in the chamber 42, whilst the central area 54 of the flange 50 which overlies the passage 45 is subjected intermittently to the pressure in the rear end of the piston chamber 22. The back of the flange 50 carries a hollow stem 55 which is slidable in a bore 56 in the plug 41 and which is vented to atmosphere by a passage 57. The peripheral rear surface 58 of the flange 50 is constantly subjected to the fluid pressure in the chamber 42 and it surrounds an annular zone 59 which co-operates with a seating surface 60 on the front of the plug 41. The valve 61 is in the form of a sleeve slidable in the annular portion 43 of the valve chamber, and has a flange 62 which encircles the flange 50 and is spaced therefrom to define an annular passage 63 through which passes all the pressure fluid used for actuating the piston. The front of the flange 62 is provided with an annular actuating surface 64 constantly exposed to the pressure fluid, whilst a shoulder 65 seats upon the surface 66 on the wall 44 surrounding the seating surface 51. The rear surface of the flange 62 constitutes a surface 67 which co-operates with an annular seating surface 68 on the plug 41. The valve 61 is also provided with an external flange 69 to form a rear actuating surface 70 which is intermittently subjected to air compressed by the piston 23 from the rear of the cylinder, this compression being conveyed to the surface 70 by a passage 71. To avoid cushioning the blow of the hammer piston, the valve 61 is formed with a peripheral groove 72 to afford communication between the inlet passage 46 and an atmospheric vent 73 and opening into the annular portion 43 of the valve chamber. Another vent 74 connects the front of the flange 69 with the atmosphere.
Patent GB-202230-A (GB)
Title: Improvements in or relating to bituminous emulsions and to their use in road-making and the like
IPC: C08L95/00
Filed: 1922-05-09
Abstract: 202,230. Mackay, H. A. May 9, 1922. Emulsions, making.-Aqueous emulsions of bitumen of the kind artificially prepared from petroleum, e.g. Mexican asphalt, are prepared by melting the bitumen and adding thereto with agitation first about 2¢-5 per cent of a higher fatty acid, and then a dilute (1-2 per cent) solution of potassium or sodium hydroxide or carbonate at a temperature of 215-225‹ F., the heating and agitation being maintained until emulsification takes place, and the agitation being preferably continued during cooling. Unsaturated acids such as oleic acid may be used. The emulsion is preferably diluted with water before use. Specification 202,021 is referred to.
Patent GB-369708-A (GB)
Title: Improvements in or relating to electric batteries
IPC: H01M6/32
Filed: 1931-01-30
Abstract: 369,708. Galvanic batteries. CALVERT, E. S. and RUSSELL, J. L., Royal Aircraft Establishment, South Farnborough, Hampshire. Jan. 30, 1931, No. 3016. [Class 53.] A dry cell of the inert type is provided with an electrolyte in the form of a coherent mass 4 through which or over which channels or spaces are provided to accommodate the filling water. In the form shown in the Figure a space 5 is left between the electrolyte and the container 1. In a modification the electrolyte is in the form of sticks. The electrolyte may be applied to the surface of the depolarizer 3 in the form of a paste consisting of crystal mixed with starch, dextrine, gum, &c., and water. The coated depolarizer is then dried leaving the electrolyte adhering to the depolarizer as a hard mass. In an alternative method the inner surface of the container is coated with the electrolyte.
Patent GB-827945-A (GB)
Title: Improvements relating to combustion chambers of gas turbine engines
IPC: F23R3/12
Filed: 1958-01-30
Abstract: 827,945. Liquid fuel atomizers. GENERAL MOTORS CORPORATION. Jan. 30, 1958 [Jan. 30, 1957], No. 3209/58. Class 75(1) [Also in Groups XII and XXVI] A fuel injector for use in combustion equipment of a gas turbine engine comprises a body 101 having a fuel inlet 103, a valve body 106 being screwed within the body 101 and securing a nozzle member 108 therein. Fuel entering the inlet passes through filter 104 to the chamber 105 and then passes through passages 111 and radial passages 112 to a central chamber 113 from which it flows through orifices 114 and 116 to impinge on the inner surface of the deflector 118 of the nozzle member 108. The fuel becomes atomized upon striking the deflector and is discharged in a fan-shaped or semi-conical spray depending on the shape of the surface. As greater fuel flows the valve member 126 is lifted from the valve seat member 123 against the action of spring 127 and fuel then flows through passages 128 and through orifice 116 in addition to the fuel flowing through orifice 114. A shroud or cap 132 is fitted over the nozzle body and provides passages 113, 134 for flow of cooling air to minimize deposition of carbon. A cap 102 is provided to close the end of the body 101.
Patent GB-215103-A (GB)
Title: Improvements in concrete mixing and spreading machines
IPC: E01C19/47
Filed: 1923-02-03
Abstract: 215,103. Peters, J. H. Feb. 3, 1923. Mixers combined with spreading apparatus. - A machine for mixing and spreading concrete for use in road-making, laying floors, paving water channels, and moulding sleepers, posts, &c., in moulds placed below it, comprises a wheeled chassis on which a mixing pan is mounted and which is provided with a traversing screed for spreading the concrete delivered gravitationally from the pan. The pan is mounted on trunnions and provided with levelling screws, is fed from tilting hoppers, and is provided with adjustable rotating blades mounted on radial arms. The screed is traversed by an endless chain by means of trip gear, and is guided on a suitably shaped rail. The mixer and the screed are operated from a motor which may also drive the chassis. The mixing pan 49, Fig. 1 is mounted on a chassis 20 running on rails 23 and provided with a motor 24 which drives a longitudinal shaft 32 from which the mixing blades 74 and the screed 77 may be operated through clutches, The motor may be geared to the front axle 21 to traverse the machine, or as shown this may be effected by a hand-operated shaft 26. The mixing blades 74 are adjustably mounted on arms 79 pivoted on radial arms 48, springs being provided to hold the blades down; the arms 79 mav be lifted and engaged with pivoted stops to hold the blades elevated, means being provided to release the tension of the springs. The pan is mounted on trunnions 70 and is levelled when the machine is on a gradient by screws 71. The materials are fed alternately into a pair of tiltable hoppers placed above the pan and water sprinkled thereon from a radial pipe. The mixture is discharged through an outlet 76 on to the road and is strickled and spread by a vertical blade 77, Fig. 7, which is pivoted on a member- 113 mounted on a carriage 120 running on a trausverse guide 118 shaped to the camber of the road. The carriage is traversed by an endless chain 60, the carriage being connected alternately to the upper and lower rims by means of gear wheels 121, 122 to which are attached ratchet wheels 123, 124 engaged by pawls 127, 128 carried by a rocking member 125. The member 125 engages cams at the ends of its traverse to throw the pawls 127, 128 alternately into engagement with the ratchets 123, 124, the fixed gear wheel 121 or 122 being then carried with the chain. The member 125 is provided with a fork 140 engaging a. hand-operated transverse cranked rod 141 by means of which the member may be placed in neutral position. The blade 77 is held in its vertical position by arms 115 which may be rocked to free the blade and allow it to trail by a handoperated cranked rod 132. Specifications 3975/02, 4720/13, [both in Class 107, Roads &c,]; and 136,051, are referred to.
Patent GB-508396-A (GB)
Title: Improvements in pipe joints
IPC: F16L27/04
Filed: 1938-02-03
Abstract: 508,396. Pipe joints. SUTTON, A.. W. Feb. 3, 1938, No. 3354. [Class 99 (i)] Conical ends a of pipes A to be. joined are clamped against rubber ring C in annular grooves b<1> in an inner ferrule B by clamping members D having convex inner surfaces d<4> which bear upon the conical ends with line contact. The rubber rings project sufficiently to ensure that a tight joint is made even if the pipes are slightly out of line, The grooves b<1> in the ferrule are shaped so that the pattern of the ferrule may easily leave the mould in which the ferrule is to be cast. There may be two or more clamping-members and the plane of division may be a longitudinal plane of the coupling or a plane transverse thereto. Specification 508,223 is referred to.
Patent GB-141149-A (GB)
Title: Improved means of constructing inspection chambers for drains
IPC: E03F5/02
Filed: 1919-02-12
Abstract: 141,149. Plant, F. S., and Pinder, J. W. Feb. 12, 1919. Man-hole and hand-hole frames.-Relates to built-up inspection chambers for drains, and consists in a combination of known features, namely sections 1, 3 with interengaging ends 2, made of cement and gravel or sand and the like reinforced by hoop iron, wire, or netting.
Patent GB-231138-A (GB)
Title: Improvements in telephone exchange systems
IPC: H04M3/12
Filed: 1925-02-06
Abstract: 231,138. Allmanna Telefonaktiebolaget L. M. Ericsson. March 21, 1024, [Convention date]. Automatic exchange systems; metering.-The conversation time of a group of lines is recorded by an ampere-hour metal M connected to parallel circuits of equal resistance, each associated with a line cf the group and controlled by a contact such as K1 which is closed during conversation. A call meter S is connected to parallel circuits controlled by contacts such as A1. The average duration of a conversation may thus be obtained. Modifications are described in which the equal resistances take the form of relays which close the contacts such as A1 momentarily by attraction of their armatures, and in which separate call meters are inserted in the parallel circuits of the ampÞre-hour meter M.
Patent GB-277551-A (GB)
Title: Improvements in adjustable knives
IPC: B26B1/00
Filed: 1927-02-08
Abstract: 277,551. Burke, G., and Acosta, M. Feb. 8, 1927. Pivoted and reversible thin-blade handles. -An adjustable knife of the kind wherein the blade may be secured to the handle in varying angular positions is constructed so that the blade may he adjusted longitudinally of itself or of the handle and secured rigidly in such position. The handle 1 has a rectangular slot 2 near one end and a slit 3 at right angles to the slot . Cover plates 4, 5 with slots 6, 7 are secured to the handle. A bolt 10 has an octagonal part 11 under the head engaging the slot 6 and a smaller square part 12 engaging a slot 9 in the blade 8, which is secured by tightening up a nut 15. The blade is preferably provided with a cutting edge round its whole periphery and may be pointed at one end and curved at the other.