baber/WOPTO huggingface dataset:
Patent GB-871735-A (GB)
Title: Microwave distribution networks
IPC: H01Q25/00
Filed: 1956-03-09
Abstract: 871,735. Radio-frequency input and output couplings for aerials; combined radio receiving and transmitting systems. SPERRY RAND CORPORATION. March 9, 1956 [March 14, 1955], No. 7549/56. Classes 40(5) and 40(7) Apparatus for distributing micro-wave power for an -antenna array comprises a primary micro-wave transmission line section; one or more secondary micro-wave transmission line sections which is, or each of which is, connected to a radiating means; a directional coupler coupling the, or each, secondary line section to the primary line section and adapted to transfer a predetermined portion of the energy in the primary line to the coupled secondary line; and one or more receiver transmission line sections which is, or each of which is, coupled to a secondary line section, to receive energy received in the secondary line section from its radiating means. In a stacked beam radar system it is required that the powers introduced into each beam are such as to produce a uniform return from a constant altitude target independent of its range. In the arrangement shown in Fig. 3 this is achieved if the powers radiated by the forms 5, 6, 7 and 8 into a common reflector are in the ratios 1:0À5: 0À25:0À125. The transmitter 11 feeds the form 5 directly through a waveguide 13; the remaining forms are coupled to the transmitter through waveguides 22, 23, 24 and directional couplers 14, 15, 16 which tap off the desired amount of power from waveguide 13. Receiver 30 is coupled to form 5 by a waveguide 31 and TR switch 41, an ATR switch 51 being provided on the waveguide 13. Receivers 33, 34, 35 are coupled to their respective horns through waveguides and TR switches 43, 44, 45. Since these switches are situated on the wrong side of the directional couplers 14-16, only a small amount of transmitter power passes to them so that they may be of a low power type; in fact the power may be insufficient to operate TR switch 45 so that it may be omitted, or the directional coupler may be designed to pass sufficient power to trigger a TR switch, or a reflective post may be provided in the secondary arm of the coupler to reflect sufficient power towards the TR switch to fire it. In a modification, Fig. 4 (not shown), the system is extended to feed seven horns from one transmitter and to couple the seven horns each to its own receiver. U.S.A. Specification 2,602,859 is referred to.
Patent GB-622530-A (GB)
Title: Improved manufacture of ultraviolet transmitting high silica glass articles
IPC: A61K31/295
Filed: 1947-03-19
Abstract: 622,530. Glass manufacture. CORNING GLASS WORKS. March 19, 1947, No. 7601. Convention date, March 28, 1946. [Class 56] A substantially pure silica article comprising a skeleton with intercommunicating sub-microscopic pores (formed by melting and shaping glass of a lower silica content and extracting the soluble constituents therefrom by lixiviation, e.g., as in Specification 442,526), is consolidated by heating to a temperature below its melting point while maintaining a partial pressure of oxygen in its pores at substantially zero. Tubes for medium pressure mercury arc lamps made in this way do not evolve gas internally in use, are transparent to u.v. light down to 2,540A (due to reduction of any residual Fe 2 O 3  to FeO), and if a vacuum is used as the means for eliminating the oxygen, are free from any arsenic (used as a fining agent) which might otherwise remain. An electric resistor type vacuum furnace may be used in which the article is heated slowly to 600-900‹C. in a reducing atmosphere, e.g. of 92 per cent N and 8 per cent H, held at about 1,000‹ in vacuo for half an hour, and then heated still in vacuo, to 1,225‹ to complete consolidation to a non-porous state.
Patent GB-140404-A (GB)
Title: Improvements in and relating to steam engines and the like
IPC: F01B17/04
Filed: 1920-03-15
Abstract: 140,404. Ball Engine Co., (Assignees of Armstrong, E. J.). Jan. 20, 1915, [Convention date]. Bed-plates and casings.-Relates to engines particularly useful for driving power shovels in which the valve spindles are above but not in the same plane as the piston-rods, and consists in providing an enclosing cover which, when removed, allows of easy access to the moving parts. Figs. 1, 2, and 4 show a two-cylinder engine having a removable cover 21. The cross-head guides 7, 8 are carried by horizontal webs 15.
Patent GB-495700-A (GB)
Title: Improvements in and relating to electric timing circuits
IPC: H02M1/04
Filed: 1937-03-16
Abstract: 495,700. Valve circuits. BRITISH THOMSON-HOUSTON CO., Ltd. March 16, 1937, No. 7712. Convention date, March 16, 1936. [Class 40 (v)] An electrical impulse timing circuit suitable for electric welding comprises a circuit of large time constant including a condenser, charged from a supply source through a resistance, and a second circuit of smaller time constant energized from the first to provide the timing impulse. The first circuit of large time constant comprises condenser 13 charged from the D.C. source 8 through resistance 18. Across resistance 18 is shunted the second circuit 21, 22 of small time constant and which controls the grid bias and operation of the impulse valve 1, which is normally rendered inoperative by negative bias from tapping 12 on potentiometer 10, 11. At the beginning of an operating cycle, condenser 13 charges up from source 8, the valve 14 being biassed to cut-off by the potential drop across resistance 18. When the charging current falls valve 14 becomes conductive and discharges condenser 13 ; inductance 20 limits the discharge current and also imposes a transient negative potential on the anode of 14 to paralyse the valve at the end of the discharge period. Curve A of Fig. 2 shows the potential variations at terminal 32. Curve B is the voltage impressed on the control electrode of valve 1 when switch 18 is on contact 29, while C represents the steady negative bias applied to valve 1 from the tapping 12. Condenser 13 discharges during interval o-x, and condenser 22 charges during the subsequent interval x-z. During x-n, 13 is again charging, while 22 discharges in circuit 18, 21 during z-n. The period x-y of curve A is that during which the potential of terminal 32, and therefore the control grid of valve 1, is positive. Curve E is an alternating current of peaky waveform injected into the control grid circuit of valve 14 by transformer 24, which may be fed from the supply mains 5 ; curve F is the waveform of the supply 5 and G represents the impulses generated across load resistance 6 during every interval o-x. During the interval x-n the valve 14 is not conductive, until the positive cathode potential B has fallen to such an extent that the peaks E are effective to trigger the valve into operation. Curve H represents the current in the D.C. circuit 6 when the grid of valve 1 is connected to 31 by switch 28. The period between successive energizations of the welding circuit may be varied by varying resistance 18 while the length of the energization time is adjusted by resistance 21. Specification 416,374 is referred to. Reference has been directed by the Comptroller to British Specifications 341,801, [Group XXXVII], and 426,201, and U.S.A. Specification 1,936,789.
Patent GB-1220236-A (GB)
Title: Thin film particle detectors and their fabrication
Inventor: BERG ALVIN LEROY
IPC: G01P3/66
Filed: 1968-02-16
Abstract: 1,220,236. Measuring speed of particles, electrically. TRW Inc. Feb. 16, 1968, No. 7733/68. Heading G1N. Micro-meteorites are detected by two thin film capacitors 22, 18 which are no longer supported by the substrates on which they were prepared arranged so that a micro-meteorite travelling along any one of a given range of paths penetrates capacitors 22 and 18 in succession to produce two electrical pulses and the time between the pulses is measured. Each detector capacitor may comprise a thin film of dielectric between thin film electrodes mounted on a ring Fig. 2 (not shown). Alternatively, a single thin film electrode supported by a wire mesh may be used as one electrode and a ring as the other Fig. 4, (not shown). Details of processes for making the thin films are given.
Patent GB-492340-A (GB)
Title: Locking device for preventing accidental loosening of separable screwed pipe joints
IPC: F16L19/00
Filed: 1937-03-16
Abstract: 492,340. Locking-nuts. AVIGDOR, R. March 16, 1937, No. 7744. Convention date, March 26, 1936. [Class 89 (i)] A pipe joint comprises a screw-threaded union 3, a nut 2 engaging a pipe 1 or a nipple projecting therefrom, and a leaf spring 4 one limb 5 of which is formed with retaining means, such as barbs 6, engaging part of the union and the other limb of which is shaped to engage the sides of the nut. The latter limb may comprise an aperture 8 notched at 9 to engage the flats of the nut, the plain part 8a of the aperture engaging a neck 2a on the nut ; this limb is cranked at 10. The spring is apertured at 11.
Patent GB-978952-A (GB)
Title: Improvements in thawing frozen foods
IPC: A23L3/365
Filed: 1961-03-03
Abstract: 978,952. Thawing frozen food blocks. A. C. JASON, and H. R. SANDERS. March 5, 1962 [March 3, 1961], No. 7775/61. Heading A2D. A block of frozen food, e.g. a block of frozen cod fillets 15 Î 12 Î 1# inch, is thawed by passage of an alternating current of which the potential is so regulated that the mean rate of energy dissipation per unit volume is insufficient to give rise to progressive localized overheating in the block. It may be of advantage first to warm up the frozen block, in air, by a water spray or by radio-frequency heating to a temperature, usually about -5‹C., below which the resistivity of the frozen block has increased to the extent that passage of alternating current is capable of giving rise only to a rate of heating less than that which could be achieved by allowing the block to absorb external heat. In the apparatus of Fig. 1, for thawing 2, a block or layers of blocks between a single pair of parallel plate electrodes 1, 1, a voltmeter 3 is connected across the electrodes which are fed through an ammeter 4 from a variable transformer, e.g. an autotransformer 5, energized from an alternating current source 6. To improve uniformity of contact between electrode and block, the electrode may be provided with a large number of sharp spikes, and between adjacent layers of blocks may be placed a layer of electrically-conductive material, e.g. a mat of woven aluminium or stainless steel wire.
Patent GB-1447190-A (GB)
Title: Method and apparatus for the repeated use of flowable compo sitions containing cocoa butter especially of chocolate
IPC: A23G1/30
Filed: 1974-02-20
Abstract: 1447190 Treating compositions containing cocoa butter KREUCOHA AG 20 Feb 1974 [28 Feb 1973] 7779/74 Heading A2A In a method for the repeated recycling and use of flowable compositions containing cocoa butter, especially chocolate, a current of the composition is subjected to a pre-crystallisation treatment, at least one processing stage is performed in which a proportion of the composition is consumed, the remaining proportion is returned to the cycle to be recycled and further used, the composition consumed is preferably substantially compensated for by the supply of similarly pre-crystallised additional quantities, and the composition is subjected temporarily to a shear stress at at least one point in the cycle. An apparatus for carrying out the method is also described.
Patent GB-431486-A (GB)
Title: Improvements relating to the treatment of hydrocarbon liquids
IPC: C10G5/04
Filed: 1934-03-12
Abstract: <PICT:0431486/III/1> In a process for the stabilizing and absorption treatment of a mixture of hydrocarbon liquids and gases, e.g. the final products of a cracking plant which are passed through a pipe 3 to a separator 2, the liquid distillate is withdrawn through a line 4, water separator 5, and optionally through a heat exchanger 8 and discharged through a line 7 into a combined fractionating and stabilizing tower 1, to a higher part of which the gases are discharged through a line 10.  Part of the liquid is withdrawn through a line 22 while the remainder accumulates in the free lower portion of the tower to a level controlled by a device 11 and is stripped by being heated to about 400 DEG  F. by elements 12 through which hot oil from the cracking plant is circulated.  The stripped oil is withdrawn continuously from the bottom of the tower by a pump 13 and passes first through the heat exchanger 8 and then through heat exchangers 16<a> where its temperature is reduced to 100 DEG . It is then recycled through a line 17 as reflux to the tower 1, from which stripped gases are withdrawn through a line 20 provided with a valve 21 by which a pressure of 35 lbs. per square inch is maintained in the tower.  The portion of the partially stabilized distillate withdrawn through the line 22 is stabilized in a tower 24 down which it trickles in countercurrent to its own vapours produced by heating the liquid accumulating at the bottom of the tower by a coil 25 heated preferably by a portion of the hot oil withdrawn from the tower 1, the vapours being returned to the tower 1 through a line 24<a> while the completely stabilized liquid passes through coolers 27 and then through a line 28 to storage.
Patent GB-550196-A (GB)
Title: Improvements relating to means for releasably securing electric relays and the like to supports
IPC: H01H50/04
Filed: 1941-06-24
Abstract: 550,196. Bolt fastenings. TOMLINSON, A. V. (Union Switch & Signal Co.). June 24, 1941, No. 7936. [Class 44] [Also in Group XXXVII] A fastening for detachably securing an electro-responsive device, such as a relay of the plug-in type used in railway signalling systems, to a support 2 comprises a member 3 secured in and projecting from the support and adapted to be passed through an aperture 7 in the back plate 5 of the relay unit 1 into a recess housing a spring- shot bolt 10 the tapered nose 11 of which engages an aperture in member 3 The bolt is releasable by pulling knob 13 and member 3 preferably extends across the recess into a supporting slot 8.
Patent GB-1429159-A (GB)
Title: Plate type heat exchanger
IPC: F28D9/00
Filed: 1974-02-21
Abstract: 1429159 Plate heat exchangers UNITED AIRCRAFT PRODUCTS Inc 21 Feb 1974 [4 May 1973] 7943/74 Heading F4S A plate heat exchanger which after assembly of the plates is bonded (e.g. brazed) into a unitary structure, comprises plates 31 (Figs. 4, 5) separated by spacing means disposed between adjacent plates and comprising spacers such as 16-20 (shown in detail in Fig. 7) disposed at the ends only of the plates and being brought into correct registration therewith by means of locating flanges such as 34, 35 on the plates, these spacers 16-20 alternating through the plate stack with peripheral spacers such as 38- 41 (shown in detail in Fig. 3) all the spacers co-operating with plate apertures such as 32, 33 to form inlet and outlet manifolds for a first fluid flowing in alternate plate interspaces. A second fluid flows in cross-flow relation to the first fluid, in the intermediate plate interspaces which are bounded in part by bar members 23 of the spacers 16-20. All the plate interspaces contain secondary heat exchange surfaces comprising corrugated fin elements 46 ior 47. Plates 10, 11 form the ends of the stack and inlet/outlet connections 14, 15 may be provided in one or both plates. Inlet/outlet connections may also be formed in the peripheral portions, such as 21, Fig. 7, of the spacers. Modified plates 31 with a manifold opening 32 or 33 at one end only of the plate may be interposed to modify the flow path of the first fluid. The outline of the spacers and plates may be modified to provide manifolds of square cross-section instead of the semicircular form shown. In use, a fluid such as hot air or oil flows in the passages served by the manifolds, and is cooled by ambient air flowing in the intermediate passages. The same ambient air stream may serve two heat exchangers interconnected via a common end plate 10. The spacers may be cut from an extruded length of suitable cross-section.
Patent GB-404496-A (GB)
Title: Improvements in or relating to lids and like covers for jars, bottles and like receptacles
IPC: B65D51/14
Filed: 1933-03-16
Abstract: 404,496. Closures for jars &c. CASCELLOID, Ltd., and PALLETT, A. E., Abbey Lane, Leicester. March 16, 1933, No. 7982. Addition to 341,136. [Class 125 (iii).] A closure for jars &c. comprises a disc of card board &c. adapted to fit over the opening of the jar and an annular retaining member of celluloid or equivalent resilient material having one edge provided with an inwardly extending flange which engages the circumferential edge portion of the disc while its other edge is formed with an internal circumferential bead adapted to snap over the jar mouth ridge. As shown the resiliency of the bead is increased by leaving a gap between the edge of the bead and the inside of the skirt of the annular member.
Patent GB-581005-A (GB)
Title: Improvements relating to the demodulation of time modulated pulse trains
IPC: H03K9/04
Filed: 1943-05-19
Abstract: 581,005. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd., and SCULLY, C. T. May 19, 1943, No. 7983. [Class 40 (v)] Time-modulated pulses are received and detected by applying them to a band-pass filter by which they are converted into a frequency or phase modulated wave and subsequently demodulated in any suitable manner. The band-pass filter comprises coupled circuits L1C1, L2C2 tuned to the pulse repetition frequency or a harmonic thereof. The resulting frequency or phase modulated wave is amplified in the valve V1 and is applied to a suitable demodulator, e.g. a pair of rectifiers DID2 fed by circuits tuned respectively above and below the pulse frequency or a harmonic thereof, and with an output circuit 01, 02 connected across the load resistances R1, R2. If the original modulation shifted the pulse phase proportionally to the modulating voltage, a correcting circuit favouring the higher signal frequencies, is connected across the output 01, 02. This may be in the form of a condenser C7 in series with a resistance R3. Alternatively, the correction may be made at the transmitting station prior to modulation, or at both stations. Specification 551,282 is referred to.
Patent GB-1469365-A (GB)
Title: Machine tools provided with a tool change device
IPC: B23Q3/155
Filed: 1975-02-26
Abstract: 1469365 Tool changers TOYODA-KOKI KK 26 Feb 1975 [26 Feb 1974] 8144/75 Heading B3B [Also in Division F2] A machine tool having a tool storage magazine 12 storing a plurality of radially arranged tools in a horizontal plane and indexable to present a tool T at a change position P, a tool change arm 15, and a spindle 11 for receiving a tool T, is characterized by the provision 1 of pair of guard covers 18, 19 arranged between the tool change position P and the spindle 11 which are pivotable in a horizontal plane by an hydraulic actuator between an open position to permit a tool change operation, and a closed position to catch a tool if one should accidentally fall from the magazine, and thereby prevent damage at the machining station and protect the machine operator. The hydraulic actuator is connected by means of a pin with slots in one end of each of the guard covers 18, 19, the other end of each of the covers overlying each other in the closed position. A notch is cut in the guard cover profile to provide room for the rotation of the arm 15 with tools T clamped between fingers 13, 14. A guard cover may be provided all around the magazine 12, except at the change position P, to catch any tools which accidentally fall.
Patent GB-1243313-A (GB)
Title: Organic peroxides
Inventor: BAFFORD RICHARD ANTHONY
IPC: C07C407/00
Filed: 1970-02-20
Abstract: 1,243,313. Organic peroxides. PENNWALT CORP. 20 Feb., 1970, No. 8229/70. Heading C2C. Organic peroxides are produced by reacting (1) an olefin of general formula in which y is 1, 2 or 3; R<SP>1</SP> is a mono-, di- or trivalent aromatic radical depending on the value of y; R<SP>2</SP> and R<SP>3</SP> are each H, or an aliphatic, cycloaliphatic or aromatic radical; R<SP>4</SP> is an aliphatic or aromatic radical; with the provisos that R<SP>2</SP> and R<SP>3</SP> may be joined together to form a cyclic group; R<SP>4</SP> and either R<SP>2</SP> or R<SP>3</SP> may be joined together to form a cyclic group; R<SP>4</SP> and R<SP>1</SP> may be joined to form a fused ring group; R<SP>2</SP> or R<SP>3</SP> may be joined to R<SP>1</SP> to form a fused ring group; and when R<SP>1</SP> carries substituents at least one ring carbon atom ortho to a is unsubstituted; with (2) a halide of formula in which X is I, Br, C1 or F; and (3) an organic hydroxperoxide of the general formula in which R<SP>5</SP> is an aliphatic or cycloaliphatic radical, the reaction being carried out under substantially anhydrous conditions, in the absence of free acid, the relative amounts of reactants (1) and (3) being such that the mole ratio of-OOH groups in the hydroperoxide to ethylenic double bonds in the olefin is from 1À 1:1 to 2: 1. Examples are given of the preparation of dicumyl peroxide; 1,4-bis[a-(t-butylperoxy) - isopropyl]benzene and 4 - [a - (t - butylperoxy) isopropyl] - α,α,α<SP>1</SP>,α<SP>1</SP>- tetramethyd naphthalan. This latter compound is preparelby reacting 1,2,4 tris (a-hydroxy isopropyl) benzene with hydrochloric acid to give 4-(achloroisopropyl) - a,a,a<SP>1</SP>,a1 - tetramethylnaphthalan which is reacted with t-butylhydroperoxide and 4 - isopropenyl - α,α,α<SP>1</SP>,α<SP>1</SP>- tetramethyl phthalan. A list of peroxides made by the process of the invention is also given and this includes peroxides carrying a chlorine or fluorine substituent.
Patent GB-1030252-A (GB)
Title: Improvements in or relating to suspensions for the front steerable wheels of a vehicle
IPC: B60G7/00
Filed: 1964-02-27
Abstract: 1,030,252. Axles; axle ends. COUNTY COMMERCIAL CARS Ltd., G. E. E. TAPP, and J. DAVEY. Nov. 23, 1964 [Feb. 27, 1964], No. 8278/64. Headings B7D and B7H. A tractor front axle suspension comprises an axle beam 19 of tubular section, connected by a universal joint 21 to the vehicle, having telescopically mounted therein a pair of arms 18 which are rigid with tubes 14 and which may be pinned at positions of adjustment to vary the track width. Rotatably mounted in the tubes 13 are arms 12 which support the wheels 10 on stub shafts 11. The tubes 13 are connected by universal joints to radius rods 29 which extend rearwardly and inwardly and are connected by universal joints 45 to a transverse member 46 attached to, or forming part of, the vehicle body. The upper ends of arms 12 extend above the tubes 13 and are formed with steering connections 14. The various universal joints may be replaced by resilient pivots. Wheel arms 15 extend rearwardly from the connections 14 and are connected to track rods 9 which are pivoted together at 7 and one of which is pivoted at 8 to a bell crank lever 3, 5 connected to a steering link 1.
Patent GB-963671-A (GB)
IPC: H01R4/02
Filed: 1963-03-01
Abstract: 963,671. Binding-posts. STANDARD TELEPHONES & CABLES Ltd. March 1, 1963 [March 6, 1962], No. 8318/63. Heading H2E. A soldering lug comprises a length of tinned copper wire with a portion of it bent generally into a Z-shape. with the three arms of the Z parallel and adjacent to each other, mounted in a hole in a plate by the distortion of at least one of the bends of the wire. The width of the hole is one wire diameter and its length three wire diameters. In a further embodiment, Fig. 3 (not shown), the wire below the plate is bent to run along the lower surface of the plate, and in this case a soldering lug is only used on one side of the plate.