baber/WOPTO huggingface dataset:
Patent GB-691375-A (GB)
Title: Improvements in or relating to tool holders
Inventor: BOWER WILLIAM LESLIE
IPC: B23B27/16
Filed: 1950-05-19
Abstract: 691,375. Tool holders. NEILL & CO. (SHEFFIELD), Ltd. May 7, 1951 [May 19, 1950], No. 12576/50. Class 83 (iii). A tool-holder, Fig. 1, comprises a body having a shank 1 to be secured in a tool-post &c. and a recess 3 at one end providing two faces, Fig. 4, to fit two adjacent sides of a foursided tool 4, a cramp 11 with two faces 13 to fit the other two sides of the tool, mating bevelled faces 10, 15 on the body and cramp extending in a direction parallel to the faces fitting the tool, and means for urging the cramp towards the body to clamp all four faces of the tool. An opening 8, which may extend the full length of the recess 3, is formed in the wall 7 of the recess to receive the cramp 11, The latter is pressed against the tool 4 and bevelled edge 10 by at least one set-screw 17 passing through a clearance hole in the cramp to engage a threaded hole in the shank 1, or through a clearance hole in the shank to engage threads in the cramp. In a modification, the end or one corner of the end of the tool-holder may be bevelled to make the tool more accessible. In a further modification, Fig. 13, the tool 59 is inclined in plan view to the axis of the shank 54, and the corners of the recesses formed to accommodate it are undercut at 60 to provide an accurate fit.
Patent GB-1152768-A (GB)
Title: A Central Heating System, the Pressure Vessel thereof having a Resilient Diaphragm
IPC: F24D3/10
Filed: 1967-03-17
Abstract: 1,152,768. Hydraulic accumulators. FLAMCO N. V, March 17, 1967 [March 17, 1966], No.12584/67. Heading F1P. The expansion of liquid in a central heating system is accommodated by an arrangement comprising a pressure vessel 1 sub-divided by a flexible diaphragm 5 into a lower liquid compartment 6 connected by a spigot 8 to liquid in the system and an upper gas compartment 7 connected by a pipe 11 to a storage tank 13 containing nitrogen gas. The vessel 1 is mounted by supports 15', 15" on the storage tank 13 which itself stands on feet 15. A gas pressure safety valve 9 is provided.
Patent GB-722351-A (GB)
Title: Improvements in or relating to the manufacture of percarbonates
Inventor: GODFREY CHARLES STANLEY
IPC: C01B15/10
Filed: 1952-05-19
Abstract: Sodium percarbonate of low bulk density is formed by mixing solutions of hydrogen peroxide and sodium carbonate, and before the percarbonate has crystallized and before any oxygen is lost, feeding the mixture to a spray drier to yield solid percarbonate. The process is preferably continuous, metered solutions of hydrogen peroxide and sodium carbonate being mixed and fed directly to the spray drier. Saturated solutions of carbonate should be employed, preferably at 30 DEG C., whilst a 30 per cent or higher solution of peroxide may be employed, the relative amounts being those required by the formula Na2CO3.1 1/2 H2O2, or with a slight excess of peroxide.  Sodium silicate, to act as a stabilizer, may be added to the carbonate solution before mixing.  The air inlet and outlet temperatures of the spray drying chamber, are, according to a typical example, 100 DEG C. and 73 DEG C. respectively. The bulk density of the product varies from 15-25 pounds per cubic foot.  Specifications 152,366, [Class 1 (iii)], 549,841 and 568,754 are referred to.
Patent GB-622112-A (GB)
Title: Fluid heating apparatus
IPC: F28C3/14
Filed: 1946-04-26
Abstract: 622,112. Regenerators &c. BABCOCK & WILCOX CO. April 26, 1946, No. 12651. Convention date, June 13, 1945. [Class 64(i)] In a fluid heater in which heat is transferred from a hot gas flowing through an upper chamber 10 to a fluid flowing through a lower chamber 12 by a moving mass of heat transfer material 11 which flows downwardly through two chambers and a narrower passage 13 which connects them the upper chamber is provided with a tapered bottom 32 which is perforated in such a manner that the gas entering the mass of heat transfer material after passing through said perforations is substantially uniformly distributed transversely of the heating chamber. Hot gases from a combustion chamber 14 pass through an annular arch 41 which is composed of wedge-shaped blocks with ports 43, through a pervious mass of spherical refractory material 44 and through the apertures in the tuyere blocks which form the tapered bottom 32. The heat transfer material may comprise natural or manufactured ceramic refractories, corrosion resistant alloys or alloy steels in small pieces of regular or irregular shape. A cyclone separator 81 may be provided for extracting dust from the heat transfer material as it re-enters the upper chamber through a pipe 20 after return by a bucket elevator 18. The lower chamber 12 has a conical perforate bottom 70 through which the gaseous fluid to be heated passes from the inlet 74. The chambers 10 and 12 and the furnace 14 are contained in a metallic, fluid-tight, refractory lined casing and the portion of the casing surrounding the lower part of the connecting passage 13 is provided with an expansion joint 77. Pressure tap connections may be fitted at spaced points in the connecting passage 13 to control the balance of pressures in the upper and lower chambers.
Patent GB-617096-A (GB)
Title: Improved device for amplifying modulated high-frequency oscillations
IPC: H03F1/07
Filed: 1946-04-26
Abstract: 617,096. Impedance networks. PHILIPS LAMPS, Ltd. April 26, 1946, No. 12658. Convention date, Jan. 10, 1942. [Class 40 (viii)] [Also in Group XL (c)] High efficiency in an amplifier for modulated waves is obtained by connecting the load to the anode through a combination of impedance inverting networks which by means of short circuiting arrangements causes the effective anode load to decrease in a stepwise manner as the signal amplitude increases. Fig. 1 shows an amplifier valve U coupled to a load R through branches (Ro) (R1, R2, R3), (R<1>1, R<1>2, R<1>3) &c in, which Ro, R1, R2, &c. are impedance inverting networks. At the intermediate junctions of these networks are connected valves A, B, A<1>, B<1>, &c. which when conducting shortcircuit the networks to produce high impedances at the input and output of the branches. When the signal amplitude is small all of these valves are conducting and since branch Ro is thus the only one conveying power to the load the effective anode load is high. As the signal amplitude increases valves A, B become non-conducting, thus opening the parallel path to the load and decreasing the effective anode load. Successive parallel branches are added as the signal amplitude increases further. In another arrangement, Fig. 3, the branches which consists of two inverting networks, successively present a lower impedance to the amplifier and are rendered operative alternatively. Further possible arrangements of the networks are disclosed in Figs. 4 and 5 (not shown). Control voltages for operating the shortcircuiting valves may be obtained by rectifying the signal applied to the amplifier and may be switched to the required valve by means of a multi-anode cathode-ray tube. Negative feedback may be applied to the amplifier to reduce distortion caused by the stepwise reductions of anode load. The impedance inverting networks may comprise quarter-wave lines or the equivalent lumped circuits arrangement. Where the branches contain three inverting networks (e.g. Fig. 1) one or all of the networks of the branch must have a positive transfer impedance and a suitable lumped circuit arrangement in which the centre network has such an impedance is shown in Fig. 8a. Since, however, the parallel combination of C and L resonate at signal frequency the branch may be simplified as shown in Fig. 8b. Fig. 7 shows a convenient short-circuiting switch which comprises a series tuned circuit L, C, inductively coupled to parallel tuned circuit L2, C2. When valves A1, A2 are conducting the parallel tuned circuit is short circuited and the series circuit is thus detuned to produce a high impedance across its terminals K. Specification 471,423 is referred to.
Patent GB-1095992-A (GB)
Title: Improvements in or relating to projectiles
Inventor: PERMUTTER LADISLAS
IPC: F42B12/06
Filed: 1959-04-14
Abstract: 1,095,992. Armour piercing projectiles SECRETARY OF STATE FOR DEFENCE. March 31, 1960 [April 14, 1959], No. 12706/59. Heading F3A. An armour - piercing projectile comprises a nose 1 which is mounted on a body 2 and arranged to turn relative to the body on oblique impact with a target, thus causing the axis of the body to turn towards the normal to the target. The frusto-conical part 4 of the body has a part-spherical tip 5 which mates with a corresponding recess in the nose to form a ball joint. The sheath 3 is in two parts joined at 6. In Fig. 2 (not shown), a small cup is interposed between the nose and the body. The nose may be made of sintered tungsten, high strength steel, or tungsten alloy, and the body of hardened steel or tungsten carbide. The intermediate cup and sheath may be of mild steel. In Fig. 2 the body has a front part of tungsten carbide and a rear part of sintered tungsten. The sheath may be omitted, in which case the nose and the body are brazed together. The projectile may be a sub-projectile to be carried in a discarding sabot or a full-bore projectile provided with a driving band.
Patent GB-737731-A (GB)
Title: Improvements in or relating to photo-electric cells
IPC: H01L31/00
Filed: 1951-05-30
Abstract: 737,731. Photo-electric devices. SIEMENS & HALSKE AKT.-GES. May 30, 1951 [Oct. 1, 1948], No. 12790/51. Class 37. In a photo-electric device having the lightsensitive element constituted by two layers of semi-conductor material, one layer being of ptype material and the other of n-type material, the degree of translucence of at least one of the layers in relation to its thickness in the direction of the incident light is such that the light penetrates to the interface between the two layers and an electrode is arranged in non- rectifying contact with each semi-conductor layer on the side remote from said interface. The pair-forming work, comprising two components as defined in the Specification, of one semi-conductor exceeds that of the other, and if the pair-forming work is greater in the n-type or excess semi-conductor it is desirable that the work component for introducing an electron from a position situated far outside the semiconductor into a neutral lattice point is very great, whilst the work component for the splitting of an electron from a neutral lattice point out of the semi-conductor is small, and vice versa if the semi-conductor in which the pair-forming work is high is the p-type or deficit semi-conductor. One of the semiconductors may be of thallium sulphide, and the other may be of selenium with the addition of thallium, sulphur or selenium oxide to increase its blocking resistance. The excess semi-conductor may have no sensitivity to light or substantially lower ensitivity to light than the deficit semi-conductor. The more light-permeable semi-conductor may be very thin and provided with a lattic electrode having grid bars which are impermeable to light. A boosting effect may be obtained by an external directcurrent voltage source applied so that its positive pole lies at the excess semi-conductor. One or both of the layers may have a very thin chemical barrier layer formed of an oxide of the layer or layers on the surface facing the other layer. As excess semi-conductors, zinc oxide, magnesium, titanium, spinel or germanium may be employed.
Patent GB-401317-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/10
Filed: 1932-05-04
Abstract: 401,317. Knitting-machines. BENTLEY, P. A., GODDARD, J. H., MANGER, C. F., WAINWRIGHT, C. H., and BUSWELL, G. A., Komet Works, New Bridge Street, Leicester. May 4, 1932, No. 12908. [Class 74 (ii).] For tucking at desired intervals upon a circular machine, a pattern controlled cam 18 is provided for engaging a needle butt 12 common to all needles, together with a cam 20 operative upon butts 16, provided only on the needles which do not tuck. Needles 10 which are not raised by the cam 20 pass into a track 22 and to a cam 24 which raises the needles to a height sufficient to open the latches for yarn reception but not to clear them. In a superposed cylinder machine, the butts 12, 16 may be provided upon the needle sliders, and butts 17 of shorter length than the butts 16 may be provided upon the sliders of the non-tucking needles for actuation by the transfer cam. In another form, Fig. 2, the knitting butts 26, 28 of the sliders of the rib needle cylinder are of two lengths, and a pattern controlled cam 30 and an auxiliary cam 32 are provided. The shorter butts 28 of the sliders of the tucking needles are long enough to be engaged by the cam 30 and not by the cam 32, and when the cam 30 is in operative position all the needles are brought to clearing position, while with the cam 30 inoperative, the non- tucking needles only are moved to clearing position. The invention is also applicable to single cylinder machines and to dial and cylinder machines. Specifications 15008/00, [Class 74, Lace-making &c.], 24290/12, 171,483, 280,612, 321,210, [all in Class 74 (ii), Knitting &c.], and 400,623 are referred to.
Patent GB-960575-A (GB)
Title: Improvements in extruders
IPC: B29C48/08
Filed: 1963-04-02
Abstract: 960,575. Extrusion machines. HERMANN BERSTORFF MASCHINENBAU-ANSTALT G.m.b.H. April 2, 1963 [May 29, 1962], No. 12921/63. Heading B5A. In an extruder for thermoplastic materials such as rubber, having a feeding roller 1 driven by a high speed shaft 7, gearing 6 is provided in the interior of the roller 1 to transmit a low speed thereto. The gearing 6 may be of the planetary type as shown or of the stub-tooth kind.
Patent GB-799935-A (GB)
Title: Improvements in and relating to work-holders for use in welding
IPC: B23K37/04
Filed: 1955-05-04
Abstract: 799,935. Work-holders. O'NEIL, W. Aug. 2, 1956 [May 4, 1955], No. 12935/55. Class 83 (3). A work-holder for use during welding has a clamp arm f with a centre hole f for a headed bolt g threadable to a nut e, and screws j, k at each end, turnable by tommy bars n, o. For welding an angle bar b to a plate a, the nut e is tack-welded to the plate a at r and the arm f attached by the bolt g to the nut e, with interposed washers p, q. The screw k clamps the angle b and the screw j is then tightened to act as a stabilizer. Tightening of the screw k further secures the work. In modifications (not shown) the arm f has a screw fixed permanently to its lower face to engage the nut; the screws j, k may be located in various positions on the arm f, and side extensions for angular settings may be incorporated; the arm f may be cranked to engage over a deep plate to be welded at right angles to another plate, and the arm f may have more than one bolt. In a further modification, the arm f is cruciform. The stabilizing screw j may be replaced by a projection on arm j.
Patent GB-216875-A (GB)
Title: Improvements in and relating to lubricating arrangements for gearings
IPC: F16H57/04
Filed: 1924-05-26
Abstract: 216,875. British Thomson-Houston Co., Ltd., (Assignees of Ross, A. A.). May 28, 1923, [Convention date]. Force-feed lubricating; straining and cooling lubricant.-A gear pump 27 geared to the lowspeed gear wheel 18 of a double-reduction gearing is mounted on and has its suction side communicating directly with a chamber 26 in the casing 10, which chamber 26 is submerged in lubricant contained in the casing and communicates with the casing through an opening 32 fitted with a strainer 33. The pump delivers the lubricant through a pipe 34, a passage 35 inside the chamber 26, an opening 36 in the end wall of the casing and a passage 37 in a removable plate 39. to a conduit 38 at the bottom of the casing. From the conduit 38 the lubricant passes by pipes 41 to conduits 42. Passages 43 lead from the conduits 42 to the bearings in the end walls, and pipes 44, fitted with sight-glasses 52, lead to spoon oilers 45 for lubricating the gear teeth. One of the pipes 41 is connected to the detachable plata 39, while the other pipe 41 is connected to the conduit 38 bv a removable plate 48 having a passage 49. A by-pass 48<a> in the plate 48 is fitted with a spring-pressed relief valve 48b, Fig. 4a and returns excess oil to the casing 10. A pipe 51 leads lubricant from the conduit 38 to the intermediate bearings. Oil thrown upwards from the gear wheels is cooled on a coil 56 secured to the underside of the cover 11 of the casing 10, through which coil water is circulated. The application to a single-reduction gear casing is also described. Reference has been directed by the Comptroller to Specification 186,587.
Patent GB-1173225-A (GB)
Title: Substituted 6,7-Benzomorphans and their Preparation
Inventor: ROBINSON FRANKLIN MOORE
IPC: C07D221/26
Filed: 1967-05-18
Abstract: 1,173,225. Substituted 6,7-benzomorphans. MERCK & CO. Inc. 18 May, 1967 [20 May, 1966], No. 13035/69. Divided out of 1,173,222. Addition to 1,173,224. Heading C2C. Novel substituted 6,7-benzomorphans of the formula wherein R is a 3 to 6 membered saturated heterocyclic ring containing O, N or S as the heteroatoms which is either unsubstituted or substituted by one or more cyclopropyl or C 1-5  alkyl radicals are prepared by reacting 5,9- diethyl-2<SP>1</SP>-hydroxy-6,7-benzomorphan with a mixed acid anhydride of the formula R.CO.O.CO.OR<SP>1</SP> where R<SP>1</SP> is C 1-5  alkyl.
Patent GB-424617-A (GB)
Title: Improvements in or relating to re-inforced concrete constructions
IPC: E04C5/065
Filed: 1933-05-04
Abstract: 424,617. Reinforced concrete beams. SZEGO, S., 34A, Bacharacherstrasse, Tempelhof, Berlin. May 4, 1933, No. 13049. Void [Abridged as open to inspection under Sect. 91 of the Acts, Nov. 6, 1933]. [Class 20 (iv)] A reinforcement for concrete beams which supports its own weight and that of the shuttering and concrete comprises a central light iron beam or framework girder B carried on provisional supports D and connected by joints C to similar side beams or girders B<1> extending between the provisional supports and the final supports A. The structure of the reinforcement is such that the stresses induced therein by the provisional supports are of opposite character to those which occur when the provisional supports are removed and the finished beam is under load. Fig. 1 shows a reinforcement suitable for the middle square of a beam extending over several squares and consisting of lattice girders B, B<1> arranged in the tension zones of the finished beam. Fig. 4 shows a cross-section of the framework in relation to the finished beam f the diagonals c being preferably welded to the longitudinal a, b. The framework may be replaced by light beams formed of rolled-iron or sheet-metal section.
Patent GB-313270-A (GB)
Title: Improvements in and relating to the refining of copper
IPC: C22B9/00
Filed: 1928-05-03
Abstract: 313,270. Alexander, H. H. May 3, 1928. Dry processes of refining copper.-Molten copper is refined by subjecting it to the action of steam under pressure, admission of air being prevented. A finely-divided reducing agent may be injected by the steam which is preferably superheated.. The. bath may be subsequently poled.
Patent GB-880349-A (GB)
Title: Improvements in or relating to locating means
Inventor: SULLY JOHN BRIAN
IPC: F16G13/06
Filed: 1959-04-17
Abstract: 880,349. Coal-cutter chains. UNITED INDUSTRIAL TECHNOLOGISTS Ltd. May 2, 1960 [April 17, 1959], No. 13103/59. Class 24. A pin 4 connecting the cutter box 1 of a coal-cutter chain and the adjacent connecting link 2 is retained by end plates 17, 18, secured by respective rivets 8. Alternatively the rivets 8 may be replaced by a single rivet (Fig. 2, not shown) extending the whole length of the pin 4. In another modification (not shown), the plates 17, 18, may be secured to the pin 4 by screws. The pin 4 has a chordal flat 14 to locate it against angular rotation.
Patent GB-836094-A (GB)
Title: Improvements in welding compositions
IPC: B23K35/36
Filed: 1958-04-25
Abstract: A magnetic welding flux is composed, by weight, of .Zircon sand.10-40% .Rutile.10-35% .Cryolite.2-8% .Iron powder.10-30% .Sodium silicate.1-4% .Silica.0-20% .Alumina.0-20% .Ferro-alloy (FeSi,. .FeAl, FeTi or. .FeZr).0-8% .Silicomanganese.0-16% .Magnetite.0-20% .and, if desired,. .Periclase.10-25% Three specific compositions are given
Patent GB-566447-A (GB)
Title: Improvements in pistons
IPC: B60T17/08
Filed: 1943-08-16
Abstract: 566,447. Pistons. JOHNSON, M. E. Aug. 16, 1943, No. 13253. [Class 122 (i)] In a piston for brake &c. cylinders operable under low pressure or vacuum and comprising a drum a, a packing member c having a peripheral lip c<1> extending over a portion of the drum, and a backing plate b, secured together by a bolt &c. d, the drum and backing plate are formed with rounded beadings a<3>, b<1> engaging the cylinder wall on opposite sides of the packing to obviate tipping of the piston. The headings may be notched to provide free communication between the packing and cylinder spaces. The wall a<2> of the drum may be tapered ; and the drum and plate b may be formed of synthetic resin. The flat portion c<2> of the packing seats in a recess e in the drum &c. is provided with a rib c<3> engaging a groove e<1>.
Patent GB-352597-A (GB)
Title: Manufacture of halogenated cyclic ketones of the acenaphthene series
Filed: 1930-04-30
Abstract: Halogenated cyclic ketone-imides are obtained by treating the products of Specification 342,379 with customary halogenating agents. According to examples the ketimide of acenaphth-peri-indandione is halogenated by the action of chlorine upon the base in aqueous solution, potassium chlorate and hydrochloric acid upon the base or its sulphate, sulphuryl chloride upon the hydrochloride suspended in ethylene chloride, and bromine upon the hydrochloride, and the hydrochloride of the ketimide of 3-chloroacenaphth-peri-indandione is chlorinated with potassium chlorate and hydrochloric acid.
Patent GB-1018865-A (GB)
Title: Multi-phase circuits incorporating electric circuit breakers
Inventor: ATHERTON THOMAS GEOFFREY FENTO
IPC: H01H9/10
Filed: 1963-04-04
Abstract: 1,018,865. Automatic circuit breakers; protective arrangements. DORMAN & SMITH Ltd. May 13,1964 [April 4,1963], No. 13315/63. Headings H2B and H2K. A circuit breaker associated with series fuses F1-F3 (Fig. 4, not shown), has a pair of undervoltage coils 44 connected between the phases on the load side of the fuses so that upon failure of a fuse, such as upon short-circuits very much above the rated current of the breaker, the breaker is tripped. The breaker is provided with the usual tripping devices, electromagnet 42 and-bimetal 43, in each phase, acting on a common trip bar 38 to release a latch 35, a further latch 31 and thus a retaining lever 30 to break a toggle linkage (not shown) to open contacts 16, 17. The breaker is reset by moving a handle 25 to the off position and thence to the closed position; a snap-action spring (not shown) is provided. The coils 44 are also mounted on the breaker housing and act, when de-energized, through rods 51 upon the common trip bar 38. A projection 50 on handle 25 acts on arms 49 attached to the armatures 45 of the undervoltage coils to reset them when the breaker is reset. In an alternative arrangement (Fig. 5, not shown) the fuses are on the load side of the breaker and the undervoltage coils can additionally be energized from the supply by a switch RS which must be closed while the breaker is reset.
Patent GB-133299-A (GB)
IPC: F22D1/42
Abstract: 133,299. K÷hler, C. Sept. 20, 1919. Feed-water, heating.-In a steam locomotive having a surface condenser 3, the condensed steam from the condenser before being pumped into the boiler is passed through a heater 8 heated by the exhaust from the auxiliary engines and then through a heater 13 heated by the combustion products. The locomotive is driven by a steam turbine 1.