baber/WOPTO huggingface dataset:
Patent GB-430408-A (GB)
Title: Improvements in and relating to combined wireless transmitters and receivers
IPC: H04B1/54
Filed: 1935-03-23
Abstract: 430,408. Wireless signalling. HERMES, L.W., 444, Ewell Road, Surbiton, and HERMES, L., Meadow View, Dickerage Road, Coombe Lane, Kingston Hill, both in Surrey. March 23, 1935, No. 9128. [Class 40 (v)] The first valve 7 of a combined wireless transmitter and receiver for use on short waves is coupled to the aerial system 1 ... 3 by an oscillatory circuit comprising two coils 4, 5 connected by a condenser 6 and shunted by a tuning condenser 8 the circuit being connected between the grid and anode of valve 7. When used as a transmitter the right-hand contacts of the change-over switch 9 are connected to the centre contacts to connect the anode of valve 7, which acts as the carrier frequency oscillator, through contacts 10, 16 to the anode of the second valve 20, the transmitter grid-leak 26 is connected to earth from the grid of the oscillator through contacts 11, 17 and the modulation transformer 27, fed from microphone 19, is connected through contacts 12, 18 in the grid circuit of valve 20. With these connections the valve 20 acts as a modulating valve the telephones 23, which may be shunted by the inductance 24, acting as a monitoring means and modulating choke. When functioning as a receiver the valve 7 acts as a super-regenerative detector by the substitution of a suitable grid leak 25 through contacts 14, 11 of switch 9, the anode being connected to the high tension source through contacts 13, 10 variable resistance 36, and the low frequency coupling transformer, while the secondary of the latter is connected in the grid circuit of valve 20, which acts as a low frequency amplifier, through contacts 15, 12. As a battery economizer, a dry rectifier 21 shunted by a resistance 22 rectifies a part of the output of valve 20 fed thereto through condenser 35 the D.C. output voltage being used as grid bias for the valve 20 in opposition to a steady large negative bias. Aerials. The aerial of Fig. 1 is constituted by two quarter wavelength conductors 1, 2 joined by a coupling coil 3. To render this system less directional two further quarter wavelength conductors 39, 40, Fig. 2, arranged at right angles to the conductors 1, 2, may be connected to the coil 3. For use on aircraft the conductors 1, 2 may be supported from or arranged in the trailing edge of a wing and the conductors 39, 40, if provided may be accommodated in or on the fuselage or they may project upward or downward.
Patent GB-1535997-A (GB)
Title: Porous electrode
IPC: H01M4/86
Filed: 1976-03-08
Abstract: 1535997 Porous electrode STAMICARBON BV 8 March 1976 [11 March 1975] 09197/76 Heading H1B A porous electrode comprising a porous electrically conductive layer 7, 8, 9 (Fig. 2), e.g. Ag, Carbon particles, Pd or Pt black in polyethylene, PTFE or PVC, an electrically conductive grid 1, 3, e.g. nickel wires which serves as a current collector and, in addition to the porous layer and grid, fibres 6 of an electrically conductive material, e.g. Pt, Au, Ir, Ag or Cr-Ni steel of thickness not more than 20 Ám. The electrode may be used in fuel cells.
Patent GB-1356131-A (GB)
Title: Container loading apparatus
IPC: B65B5/10
Filed: 1971-04-13
Abstract: 1356131 Packaging machines/pusher, walking beam, and endless conveyers H J HEINZ CO 13 April 1971 9240/71 Headings B8C and B8A] In a machine having a magnetic loading head 2 for placing a group of cans 10 into a container 4, a row of cans is fed on to a receiving table 26 by a conveyer 12 and pushed between a pair of pivotal aligning-brackets 80 by a pusher 28 so that a nested group of cans is formed on a walking beam 30 which transfers the nested group to the loading head 2. Can feed.-The conveyer 12 is stopped by a counting means 18 when a predetermined number of cans have been fed to the table 26. The pusher 28 comprises a pusher plate 40 reciprocated by a cylinder 42. A cam actuating rod 50 is connected to the pusher plate 40 and carries a pin 120 which engages a ratchet 116 to rotate a cam wheel 110 as the plate 40 is advanced. A pin 122 is received in a slot in the wheel 110 and is carried by a bar 98 which carries a pair of pins 100 connected to the brackets 80 which are hinged at 104. Thus, as the cam wheel 110 rotates, the bar 98 is displaced to pivot the brackets 80 so that a row of cans being pushed therebetween is laterally deflected. Walking beam.-The walking beam 30 comprises a plurality of spaced beams 130 carried by supports 132 and adapted to be received  between spaced elements (200, Fig. 5) of the table 26. The supports 132 carry brackets 134 which have rollers running in tracks 140. An air cylinder 142 is connected to one support 132 to move the walking beam 30 from the table 26 to the loading head 2. The tracks 140 are raised and lowered by cams 150 rotated by a cylinder 180. In operation, the walking beam 30 is in its upper position when the nested group of cans is formed thereon. When the walking beam 30 has carried the group to below the loading head 2, the head 2 is lowered by a cylinder 220 to engage the cans and the walking beam is then lowered and retracted. Container feed.-The side walls of the container 4 carry rollers 234 which run on inclined tracks 240 to carry the container to the loading position. A first stop (250, Figs. 2 and 7) prevents the container 4 entering the loading position until required. An endless conveyer 280 carries the container 4 from the stop (250) to a position below the loading head 2 where the container is raised by an elevator 282, a second stop 290 being provided to prevent the container 4 from overshooting the elevator 282. The elevator 282 may be lowered in increments so that the container 4 receives successive layers of cans. The filled container 4 is carried by the endless belt 40 to inclined discharge tracks 342.
Patent GB-182529-A (GB)
Title: Improvements in detachable shirt fronts
IPC: A41B1/02
Filed: 1921-03-29
Abstract: 182,529. Field, R. March 29, 1921. Shirt fronts. - A de tachable shirt front is provided with continuous loops b of tape or the like secured at their inner ends to the edges of the front and extending 1 a t e rally therefrom in line with or little below the stud so as to engage the braces thus holding the front extended and presenting it from puckering. In the case of a reversible front similar loops b<1> are provided at the lower end.
Patent GB-1179264-A (GB)
Title: A New or Improved Method of and Apparatus for Improving the Mechanical and/or Physical Properties of Elongated Metal Elements, e.g. Wire, Strand or Wire Rope.
Inventor: HANN KENNETH GRAEME
IPC: C21D8/06
Filed: 1967-02-28
Abstract: 1,179,264. Stretching; improving physical properties. G.K.N. SOMERSET WIRE Ltd. 27 Feb., 1968 [28 Feb., 19671, No. 9335/67. Headings B3E and B3V. [Also in Divisions C7 and H5] The mechanical and/or physical properties of an elongated metal element, e.g. wire, bar, strip, or steel wire rope or strand 9, are improved by advancing it in straight configuration between a plurality of pairs of jaws 27 of two spaced-apart gripping devices 14, 15, engaging the pairs of jaws with the element, passing an electric resistance heating current through the jaws and along the length of element extending between the jaws of one device and those of the other and regulating the voltage supplied to each pair of jaws so that equal current is supplied through each pair, subjecting the element to tension during heating by displacing the two gripping devices relatively away from one another to effect the required elongation of the heated length of element extending between the devices, cooling the elongated length of element, e.g. with water passing along a surrounding cooling tube (or trough) 34 extending between the two gripping devices, disengaging the pairs of jaws from the element, advancing the heat treated element by a distance substantially that separating the two gripping devices, and repeating the foregoing steps. One gripping device 14 may be fixed in relation to a frame 10 and the other device 15 may be provided with wheels 16 running on rails 17 for being displaced away from the device 14 by operating a pair of hydraulic stretching rams 31. Each gripping device 14, 15 may comprise a pair of blocks 18, 19 presenting opposed wedge faces 20, 21 between which are disposed a pair of jaw-carrying wedge members 22, 23 respectively. Each wedge member 22, 23 may be displaceable longitudinally of the element, to be forced towards one another so as to engage their respective jaws 27 with the element, by operating two pairs of hydraulic rams 26. A set of rollers 25 or other antifriction devices may be provided between each wedge face 20, 21 and the adjacent wedge member 22, 23. Each jaw 27 may be connected to an associated current supply lead 29 through a resistance, the value of which decreases progressively away from the length of element extending between the two gripping devices. The heat-treated element may be ¥-6 inch diameter steel wire rope or strand used for suspension bridge cables, or used in reinforced concrete construction. Specifications 1,114,261, 969,192 and 969,191 are referred to.
Patent GB-455340-A (GB)
Title: Improvements in preliminary combustion chamber devices for direct injection internal combustion engines
IPC: F02B19/14
Filed: 1936-03-30
Abstract: 455,340. Combustion chambers. DAIMLER-BENZ AKT.-GES., Untert³rkheim, Stuttgart, Germany. March 30, 1936, No. 9374. Convention date, April 1, 1935. [Class 7 (iii)] In a pre-combustion chamber having a heat accumulating part, formed by a concentration of material, disposed at the throttled connection or in the chamber adjacent the throttled connection, a partition is provided to screen the heat accumulating part from the fuel jet issuing from the nozzle c. The heat accumulating part may be formed by thickening the bottom of the chamber or as shown, by a core-piece f carried by a disc e and surrounded by rings g, h of holes. The central imperforate part of the partition l prevents fuel striking the core-piece f, and both the partition and the disc e are carried by a cup-like member d which is provided on its outer surface with heat insulating spaces. The fuel jet passes through a looped ignition wire n which is used for starting.
Patent GB-780522-A (GB)
Title: Improvements in the production of half-tone images
Inventor: HEPHER MARTIN
IPC: G03F5/18
Filed: 1955-03-31
Abstract: 780,522. Photographic half-tone images. KODAK, Ltd March 16. 1956 [March 31, 1955], No. 9410/55. Class 98(2) For use as in preparation of intaglio printing surfaces, a continuous tone image is exposed through a coloured half-tone screen in contact with a silver halide emulsion layer with light absorbed by the colour of the screen to give a half-tone latent image of high gamma, and with light transmitted by the colour of the screen to give a continuous tone latent image of low gamma, the emulsion being such as to develop to the specified gammas. The screen may be of ruled line pattern, or is, preferably, a contact screen. In an example a gelatine-silver bromide emulsion, treated for sensitivity to green and blue light. of gamma about 5. is dyed as with tertrazine to reduce its gamma to blue light to about 1, coated as on a glass support to form a layer which is placed in contact as with an Eastman Magenta Contact Screen, the other side of which is placed in contact with a continuous tone image; exposure is effected with green and blue lights of durations ascertained by tests with each light separately to give the desired half-tone and continuous tone images in automatic register, and may be developed and fixed in the usual way, or may be treated with a tanning developer and washed out to give a relief image for transfer and subsequent etching to produce a metal photogravure plate. Specification 712,164 is referred to.
Patent GB-165548-A (GB)
Title: Improvements in screw-propellers
IPC: B64C11/04
Filed: 1920-04-01
Abstract: 165,548. Leitner, H. April 1, 1920. Screw propellers.-Relates to laminated blades detachably and adjustably secured to the hub, and consists in making the cylindrical stem integral with one or more of the laminµ in forming the boss in two parts which are clamped or bolted together, in providing an outer shell for the blade shanks with an annular flange engaging inner flanges on the boss, also in providing serrated members for setting the blades at the desired pitch. The blades, made as described in Specification 151,693, have cylindrical sockets h, Figs. 1 and 2, with shoulders h<3> which engage the recess i<3> in the divided boss i. Each blade has a serrated rim h<4> with which engages a serrated locking member i<4> on the boss. The boss is attached to the shaft b<1> by a tapered sleeve b<2> keyed in the boss and secured by a shoulder b<3> and nut b<4>, the tapered portions of the shaft and sleeve have keys be and a tightening nut b<5>. In a modification, the blade is secured to the hub socket by a through bolt which prevents endwise movement, but by reason of the hole in the boss being elongated permits of pitch adjustment, a serrated fitting maintaining the setting as before. Alternatively, the blade socket may surround the hub socket. The blade socket may be reinforced by one or more external laminµ q which are secured by a clamping-ring p, Fig. 15, or may extend down and around the cylindrical shank. The blade socket may be made in two parts split longitudinally. When the socket has a shoulder adapted to engage a recess in the split boss, the sleeve s with its flange t, Fig. 22, and an inner sleeve r are riveted to the 'blade laminµ c which are continued around a base piece u and finally secured by a flange t<1> and nut v. The base piece u may be formed integrally with the inner sleeve r. In one construction, the boss sockets only are split, the boss centre being in one piece. For pitch adjustment, bolts w, Fig. 20, pivoted to lugs w<1> on the blades, pass through holes in lugs x on the hub sockets, and have adjusting nuts y.
Patent GB-1497632-A (GB)
Title: Vacuum switch
IPC: H01H33/66
Filed: 1976-03-10
Abstract: 1497632 Vacuum switches SPRECHER & SCHUH AG 10 March 1976 [29 July 1975] 9535/76 Heading H1N To strengthen the movable contact assembly of a vacuum switch the movable contact 5 in the evacuated housing of the switch is fixed to a support element 10, which moves with the contact 5 and is guided for such movement by a guide 11 situated outside the evacuated housing, electrical connection to the contact 5 being by means of a conductive tube 8 and flexible conductor 9. The support element 10 is of hollow cylindrical tubular shape and on its inner surface carries a getter 14 of activated titanium, the interior of the tube being evacuated and in connection with the interior 7a of the evacuated housing of the vacuum switch via a passage 5a through the contact 5. A second embodiment is described wherein both the contacts of the switch are movable and both contact assemblies are similarly constructed, Fig. 2, not shown. The contacts may comprise arc electrodes.
Patent GB-1411934-A (GB)
Title: Rubber mounting flanges
IPC: F16L33/28
Filed: 1974-03-04
Abstract: 1411934 Flanged rubber pipes EDDELBUTTEL & SCHNEIDER 4 March 1974 [3 March 1973] 9584/74 Headings F2G and F2P A rubber hose 1, with armouring 2 of a woven textile or metal material, is formed integrally with a rubber mounting flange 3 which is reinforced by the armouring 2 of the hose, and is formed with a number of through-holes, as 7, each hole having therein a protective sleeve formed from two bushes 8 of a plastics material, preferably a polyamide which are force fitted together so that shoulders 9 thereon abut the faces of the flange 3. Annular projections 10 to provide additional sealing are provided on at least the shoulder 9 which abuts the front face 4 of the flange 3, but may be provided on both shoulders 9, if desired. Annular projections 5 are also formed on the face 4 of the flange 3 and this face is backed by a support ring 6 of a solid or woven material, e.g. metal, plastics material or wire embedded in the flange. A loose flange 11 is disposed on the hose 1 to distribute compressive forces exerted by bolts disposed in the holes 7.
Patent GB-1382883-A (GB)
Title: Laminated articles with conductive surfaces
IPC: H05K1/03
Filed: 1972-03-01
Abstract: 1382883 Metal faced laminates E I DU PONT DE NEMOURS & CO 1 March 1972 [1 March 1971] 9630/72 Heading B5N [Also in Division C7]  A laminate comprises a substrate comprising at least one ply of fibrous sheet material impregnated with a polyimide resin and/or polymeric precursor thereof, said substrate having bonded to at least a portion of one surface thereof a metal layer having a substantially continuous coating of a nickel/boron alloy containing 0À1 to 15% by weight boron. The metal layer may be a nickel, copper or silver foil or be composed of copper particles and may be coated by electroless deposition or plating. The coating may be applied to both sides of the metal film before bonding to the substrate. The polyimide precursor may be a reaction product of a dianhydride of a tetracarboxylic acid and a diamine. The fibrous sheet material may be a glass fabric and the impregnant may contain inert thermally stable colloidal particles. Examples of preferred particles are given. The laminate may be used as a printed circuit board.
Patent GB-1576838-A (GB)
Title: Hand grenade
IPC: F42C15/40
Filed: 1977-03-08
Abstract: The hand grenade has a spring-loaded switching part (25) which is moved outwards by centrifugal force when the hand grenade is being accelerated before it is thrown, and closes a first switch (27). After being thrown, the switching part (25) moves into an inner limit position, under the influence of a spring, in which inner limit position a second switch (26) is closed. An electronic device is supplied via the two switches, which electronic device has a transmitter (31) which triggers on impact of the hand grenade and controls the detonation if a timer (29), which is activated on throwing, has measured a predetermined time on impact. A high level of safety is achieved against detonation in the event of accidental or deliberate incorrect manipulation. <IMAGE>
Patent GB-1515486-A (GB)
Title: Multiple beam receiving array signal processor
IPC: G01S13/42
Filed: 1977-03-08
Abstract: 1515486 Radar; direction finding STANDARD TELEPHONES & CABLES Ltd 8 March 1977 09685/77 Heading H4P  A signal processor for a multiple beam receiv ing antenna array in which the outputs from a linear array of (N-I) spaced aerial elements are separately mixed in (N - 1) mixers with a common radio frequency offset from the radio frequency of the signals received by the array to produce intermediate frequency signals and the mixed signals are all sampled periodically and simultaneously, comprises a surface acoustic wave delay line RO having its taps interconnected with the respective sampled element signals so that the sampled signals are transferred serially to a phase weighted transversal filter TF in a sequence which is a reordering of the linear sequence of aerial elements according to the prime number transform algorithm p=g<SP>i</SP> modulo N where i is the original sequence, p is the reordered sequence, and g is a socalled primitive root of a prime number N, the filter having a tapped delay line with the outputs of successive taps being individually phase weighted corresponding to the reordered sequence of the sampled signals, the outputs of the phase weighted taps being summed to effect a convolution of the input signal sequence and the phase weighting sequence. The signals, in prime order sequence are mixed with the oscillator LO 2  frequency and fed to a fast A/D converter before a final serial to parallel conversion and reordering back to the original linear sequence.
Patent GB-570554-A (GB)
Title: Improvements in or relating to hand grenades or other bombs
IPC: F42B12/76
Filed: 1941-07-30
Abstract: 570,554. Grenades or bombs. KAY BROS., Ltd., SINCLAIR, A. L., and HARTLEY, H. K. July 30, 1941, No. 9705. [Class 9 (i)] A bomb or hand-grenade comprises a container a for explosive formed of material which will disrupt or deform but not spread, an outer flexible or pliable cover, and a detonating mechanism. The container may be formed of glass or of synthetic resin, rubber or felt; the glass may be coated with latex. The detonating mechanism comprises a striker k, carried by a curved body b disposed in a hemispherical cavity d in a two-part head e to which the container a is attached, and a ,cap g attached to a fuze h, the striker and cap being normally retained apart by a light spring f. The striker is retained in raised position by a cross-bar j attached to a weight m and by a hand-released screw i which is unscrewed before the grenade is thrown. The grenade is multi-directional for impact, and since the container does not spread on impact, the force is localised to a small area, and is capable of shattering armour-plate. The explosive may be of plastic consistency.
Patent GB-590768-A (GB)
Title: Method of preparation of acetonitrile
Filed: 1945-04-19
Abstract: A catalyst for the preparation of acetonitrile from acetylene and ammonia (see Group IV) is prepared by precipitating sodium aluminate with a solution of zinc and chromium nitrates, washing the gelatinous precipitate of hydrated alumina and zinc and chromium hydroxides so as to remove a part, but not all of the sodium nitrate present, and calcining this precipitate.  The catalyst may then be heated in a current of ammonia at 500 DEG C.  It may be revivified by passing air or steam over it at 450-500 DEG C.ALSO:Acetonitrile is prepared by passing a mixture of ammonia and acetylene, in the moist state, at atmospheric pressure and at temperatures between 300 DEG  C. and 500 DEG  C., over a catalyst containing an acetylene hydration catalyst (comprising zinc oxide), a dehydration catalyst (comprising alumina) and a dehydrogenation catalyst (comprising chromium oxide) (see Group III).  Preferably the catalyst is slightly alkaline and the ammonia is employed in slight excess, e.g. 10 per cent excess, together with a little steam.  The acetylene may be bubbled through water at 60 DEG C. before the reaction, and the reaction may be started at 300-350 DEG  C., being raised to 450-500 DEG  C. as the catalytic activity diminishes.  The catalyst may be given longer life by purifying the acetylene before use by washing with a mixture of sulphuric and chromic acids, followed by passage over activated carbon, and is preferably divided amongst two or more reactors in series, with condensation of acetonitrile between reactors.  Suitable materials for the walls of the reactors are non-oxidizing steel, quartz, aluminium, and ceramic materials. The hydrogen leaving the apparatus is washed with water, which dissolves the ammonia and acetonitrile present.  The ammonia in the solution is utilized by passing through it the acetylene entering the reactors, and the acetonitrile is separated by distillation in the form of its azeotrope with water, which is worked up according to the method of Specification 590,767, [Group III], with ammonium carbonate to give pure acetonitrile.
Patent GB-493024-A (GB)
Title: Improvements in swifts or ryces for holding skeins or hanks of yarn or thread
IPC: B65H49/30
Filed: 1938-03-31
Abstract: 493,024. Skein holders. HOLT, Ltd., T., and HOLT, R. March 31, 1938, No. 9828. Addition to 480,972. [Class 120 (ii)] The non-contiguous ends of the band described in the parent Specification are connected by lever-operated means for tensioning the band 13, Fig. 1, to hold the arms 14 in the adjusted position and for removing the tension on the band when the arms are to be re-adjusted. As shown a lever 18 is pivoted between curls 16 formed at one end 13<1> of the band and carries a pin 20, Fig. 2, which is embraced by an curl 22<11> at one end of a spring plate 21., the other end of which is fixed to the other end 13<11> of the band; the plate 21 may have a resilient curl 22 and the plate may be operated by the lever through a cam.