baber/WOPTO huggingface dataset:
Patent GB-379673-A (GB)
Title: Improvements in or relating to two-way electrical signal transmission systems
IPC: H04B3/20
Filed: 1931-05-30
Abstract: 379,673. Valve amplifying circuits. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.- (Assignees of Norwine, A. C. ; 53, Tennyson Place, Passaic, New Jersey, U.S.A.) May 30, 1931, No. 15883. Convention date, June 7, 1930. [Classes 39 (i) and 40 (v).] A quick-acting echo-suppressing arrangement for a telephone repeater system utilizes a gasfilled three-electrode discharge device, the grid of which is normally maintained near the ionizing potential so that on the application of speech currents a sudden rush of current rising almost instantaneously to its maximum value occurs in the anode circuit. A high resistance in the anode circuit limits the discharge so that cessation of the speech currents stops the discharge. In the arrangement shown in Fig. 1, when speech arrives over the line LW, a sudden rush of current is produced in the anode circuit of the discharge device 14, passing mainly over a condenser 22 and operating a polarized relay 21 which by removing a short-circuit from the right-hand winding of a second polarized relay 25 causes a short-circuit to be placed across the line LE. Relay 21 also closes an energizing circuit for relay 25 in series with a third polarized relay 27 which disconnects condenser 22 so that the discharge now passes entirely over resistance 29, and closes a parallel circuit for relay 21 over resistance 33 in order to counteract the tendency of the device 14 to oscillate. When speech ceases, relays 25, 27 remain operated for a short interval after the release of relay 21 owing to the provision of condenser 35 and resistance 28. In a modification, Fig. 3, the anode circuit of the discharge device 14 includes a condenser 64 or 65 according to the position of a switch 66, the effect of either condenser being to maintain the operation of relay 60 for a short interval after the discharge ceases. The discharge device is filled with an inert gas, e.g. argon, mercury, neon, at say 0À1 mm. pressure, or a mixture of gases, e.g. argon and mercury. The grid must shield the whole cathode from the anode.
Patent GB-1329075-A (GB)
Title: Package accumulating conveyor
IPC: B65G47/51
Filed: 1971-05-19
Abstract: 1329075 Endless conveyers TAYLOR MFG CO 19 May 1971 [13 Nov 1970] 15889/71 Heading B8A When the number of containers B on a conveyer 10 between a filling machine (not shown) and a packaging machine (not shown) exceeds a predetermined amount they are able to spill over on to a reservoir conveyer 20. The containers engage a rail 61 which is carried by a framework which rests on the surface of the conveyer 20. The latter has sprockets 72 which engage the runs of chains 73 carried by sprockets 34 and 35 on the drive and return shafts of the conveyer 20. Thus the rail 61 moves with the conveyer 20 but can be moved relatively to it by the pressure of the containers. When the latter start to spill over from the conveyer 10, they push the rail away until they are in a position in which they operate a switch LS1. After a time delay, this starts the running of the conveyer 10 The latter is reversible, but the direction of movement is determined by a switch LS2 in a downstream position at the side of the conveyer 10. When the effect of the spillage on to the conveyer 20 is such as to relieve pressure on the switch LS2, the latter re-opens and this stops the conveyer 20 and after a time delay, its drive motor is reversed. If however the rail 61 reaches the end of the conveyer 20, a switch LS3 is operated by the rail. This also results in reversal of the drive of the conveyer 20. Continued accummulation of containers on the conveyer 20 then operates a switch LS5. This stops the drive of the conveyer 20. Operation of a switch LS4 responsive to bunching of the containers on the conveyer 10 at a position just upstream of the conveyer 20 also causes shutdown of the drive of the conveyer 20. A circuit diagram (Fig. 5, not shown) is described.
Patent GB-1382486-A (GB)
Title: Multilayer bonded structures
Inventor: WARD ROBERT A
IPC: C08J5/06
Filed: 1972-04-06
Abstract: 1382486 Elastomeric layer containing laminate GENERAL ELECTRIC CO 6 April 1972 [28 April 1971] 16000/72 Heading B5N A structure comprises at least one layer of elastomeric material having bonded thereto at least one layer of fibrous material which has been treated with an aliphatically unsaturated bisimide, a reaction product of such a bisimide with an organic polyamine or a mixture of such a bisimide and such a reaction product, the treating agent in the structure being in a cured state. The bisimide preferably has the structure where R 1  is an alkylene, e.g. ethylene group, an arylene group, a cyclohexylene group, at least two arylene groups bonded to one another through at least one of the radicals -CH 2 -, -SO 2 - and -O-, or at least two cyclohexylene groups bonded to one another through -CH 2 - radical, R 2  is and wherein R 3  is H or CH 3 . The reaction products may be derived from a bisimide of formula wherein D is a divalent radical containing a carbon-to-carbon double bond and A is a divalent radical containing at least 2 carbon atoms and a primary diamine of formula where B is a divalent radical having not more than 30 carbon atoms. The elastomeric material may be a natural or synthetic rubber, e.g. an ethylene-propylene copolymer, a diene modified ethylene-propylene copolymer, a butadiene polymer, natural rubber, an isobutylene-isoprene copolymer, a polychloroprene, a polysiloxane, a butadiene acrylonitrile copolymer, a chlorosulphonated polyethylene or a styrenebutadiene copolymer. The fibrous layer may be formed of fibres of glass, e.g. glass fabric, asbestos, synthetic material or stainless steel. The structure may be made by treating the fibrous layer, e.g. by coating or impregnating with the bisimide material and bonding the treated fibrous material to the elastomeric material under elevated temperatures to cure the bisimide material.
Patent GB-489062-A (GB)
Title: A process for the manufacture of soluble dry products containing a concentrated coffee extract
IPC: A23F5/40
Filed: 1937-06-09
Abstract: A process for the manufacture of soluble dry products containing a concentrated coffee extract in a stable form, consists in adding soluble, edible carbohydrates having the capacity of retaining the aromatic substances of the roasted coffee, to an infusion of roasted coffee in water, and drying by atomization or spraying with heat. Thus, malto-dextrine solution is added to a coffee infusion and the whole dried in a spray-desiccator.  Other carbohydrates suitable are maltose and the product obtained by hydrolysing spent coffee grounds by hydrochloric acid.
Patent GB-222180-A (GB)
Title: Improvements relating to diaphragms
IPC: H04R7/10
Filed: 1923-06-20
Abstract: 222,180. Imray, O. Y., (Radiotive Corporation). June 20, 1923. Diaphragms.-In a diaphragm of the kind wherein a disc of fabric is interposed between two discs of celluloid, all the discs are fastened together to form one membrane by an adhesive composition under heat and pressure. Two celluloid discs 5, 6 are adhesively united by a mixture 11, 12 containing two parts of shellac and one part of mica which, under the action of heat and pressure, forms a plastic mass, and permeates a silk disc 7. The opposing faces of the mould in which the diaphragm is formed are shaped so as to produce a plurality of annular corrugations 10. Instead of a mixture of shellac and mica, shellac alone may be employed.
Patent GB-935947-A (GB)
Title: Arrangement for sound reproduction
IPC: G10K15/10
Filed: 1960-05-06
Abstract: 935,947. Reverberation systems. J. S. WHITEFORD. May 6, 1960 [May 8, 1959], No. 16146/60. Class 40 (4). In sound-reproducing apparatus for simulating the acoustic response of a large auditorium in a much smaller one and of the type including a number of loud-speakers spaced apart in the auditorium and fed sequentially in time in accordance with position with signals from a single source, so that for example loudspeakers towards the back of the auditorium receive signals slightly later than those at the front, additional signals are introduced by feeding a part of the signals from a channel leading to one of the loud-speakers directly into a channel leading to another of the loudspeakers. Magnetic tape 5 passes across an erase head 11 to a recording head 13 energized from a mixer and recorder amplifier 15 supplied by microphones 23, 23<SP>1</SP>. The tape 5 proceeds successively past equidistantly spaced playback heads 20, 40 ... &c. The heads transmit signals to pre-amplifiers 22, 24 ... &c, each having volume, base and treble controls, and the signals then pass to amplifiers 22<SP>1</SP>, 24<SP>1</SP> ... &c., and to loud-speakers 2, 2<SP>1</SP>; 4, 4<SP>1</SP> ... &c. disposed from front to back of auditorium 1. Simulated reflection effects are produced by connecting an output of preamplifier 22 through a volume control R 2  to an input of pre-amplifier 28. Similar connections are made between pre-amplifiers 24 and 30, pre-amplifiers 26 and 24, pre-amplifiers 28 and 32, pre-amplifiers 30 and 26 and preamplifiers 32 and 22. The signal level of the simulated reflections is 3 decibels below the primary signals. An output from pre-amplifier 32 is also fed to the recording amplifier. The frequency response of the successive preamplifiers is adjusted to accentuate the base and attenuate the treble more and more in the successive channels from front to back. Prerecorded tape may be used, dispensing with erase head 11 and recording head 13 and also with the feed-back circuit to the recording amplifier. Gramophone records or photographic records may replace tape.
Patent GB-553579-A (GB)
Title: Improvements in or relating to double sided presses for sheet metal
IPC: B21D22/02
Filed: 1941-12-16
Abstract: 553,579. Metal working presses. RHODES, C. J. Dec. 16, 1941, Nos. 16219/41 and 12517/42. [Class 83 (iv)] Double sided presses for sheet metal, in which the base and head are connected by tie bars having upon them spacing sleeves, have the bars 7 mounted in projections 1a from the base to reduce the overall length of the bars and lessen the tendency to deflect under unequally distributed loading. The press head is guided on separate rods 8 mounted at their ends in loose collars secured by screws to the frame whereby the positioning of the rods may be effected by the use of the press heads itself, and removal may be effected without disturbing the main tie rods.
Patent GB-1090997-A (GB)
Title: Tetracycline derivatives
IPC: C07C233/00
Filed: 1965-04-15
Abstract: Water-soluble tetracycline derivatives of the formula XCH2NH(CH2)nCOOH wherein X is the residue of a tetracycline (i.e. tetracycline itself, chlortetracycline or oxytetracycline) or an epimer or anhydrotetracycline thereof, n is 3 to 5, X being attached through its amide nitrogen atom, and non-toxic salts thereof, are prepared by the reaction (preferably in a solvent medium, e.g. MeOH or EtOH) of a tetracycline, an epimer or anhydrotetracycline or a salt thereof with formaldehyde and an amino acid of formula NH2(CH2)nCOOH or a salt thereof.  A modified process involves the reaction of the amino acid with formaldehyde and the resultant compound is then reacted with the tetracycline. Specific compounds prepared are tetracycline-methylene - N - g  - aminobutyric acid, tetracycline - methylene - N - D  - aminovaleric acid and tetracycline - methylene - N - e  - aminocaproic acid.  The tetracycline derivatives and salts with physiologically compatible acids and bases (e.g. hydrochloride, sulphate, Na and K salts) may be admixed with pharmaceutical carriers to form tablets, capsules, coated tablets, pills or ointments and aqueous solutions are suitable for parenteral administration.
Patent GB-762026-A (GB)
Title: Improvements in or relating to a method and apparatus for the loading of trucks
IPC: E21D9/12
Filed: 1954-06-03
Abstract: 762,026. Loading mine trucks. WETEKAM, H. J. June 3, 1954 [June 5, 1953], No. 16398/54. Class 78 (4). A hopper 1 moves beneath a line of boxes 12 to direct material discharged through the sliding bottom of the boxes to a train of trucks 8. The hopper is suspended by hooks 3, 4 from a wheeled carriage 2 running on rails 7 supported by clamps 6 from beams which also support pairs of rods 15 which engage brackets 14 on the boxes 12 to support them. A plate 10 for bridging the gaps 11 between trucks hangs beneath the arcuate hopper door 9 which may be closed by a fork mounted on the last truck 8 of a train of trucks moving in the direction of the arrow 16. The boxes 12 may be those for receiving the spoil in mining.
Patent GB-116030-A (GB)
Title: Improvements in Liquid-fuel Feeding Mechanism for Internal Combustion Engines.
Inventor: WINTON ALEXANDER
IPC: F02D1/00
Filed: 1917-11-10
Abstract: 116,030. Winton, A. Nnv. 10, 1917. Eccentric-actuated pumps.-The pumps for feeding liquid fuel to the cylinders of internalcombustion engines are of the kind described in Specification 10309/15. There is one pump 15 for each engine cylinder, and all the pumps are worked by eccentrics on a shaft 24. The quantity of liquid admitted to each pump is determined by a slide valve 34 which is held against its seating by a spring plunger 47 The valve is worked by the eccentric rod 21 through a lever 38, the fulcrum 41 of which is adjusted by a governor.
Patent GB-561633-A (GB)
Title: Device for measuring angles
IPC: G01C15/00
Filed: 1942-11-23
Abstract: 561,633. Measuring angles. MARCONI'S WIRELESS TELEGRAPH CO, LTD, and 561,633. Measuring angles. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and MOON, J. H. Nov. 23, 1942, No. 16567. [Class 97 (ii)] Relates to an angle-measuring instrument particularly for use on aircraft for checking the 'accuracy of the compass and of the radio - direction finder. It comprises two co-planar mirrors Mt, Mh, one of which, Mt, is stationarily mounted on a base such as a bridge BP, Fig. 3, carried by a lid'L of a box, while the other, Mh, is rotatable on an axis coincident with the median line of the stationary mirror. As shown, the mirror Mh is carried by a bracket B from' a sleeve C<1> carried by the bridge BP, while the other mirror Mt is mounted on a spindle S<1>which is geared to a dial D, scale, cursor, or the like so that it indicates double the angle through which the mirror Mt is rotated. Datum marks Dh, Ds may be provided on the device. Fig. 1 shows the use of the device for checking the angle to the radio-direction bearing. With the aeroplane placed' in one position a mark or stake h is set out on the ground in the longitudinal axis of the plane; another stake is set out on the ground in the radio-beam. The device is turned as a whole until an image of the mark h is obtained in mirror Mh and mirror Mt is then rotated until the image of the stake t is obtained in the mirror Mt in alignment with' the image' of the mark h in the mirror Mh. In the example, the mirror will have been rotated through 140 degrees, the reading on the dial D being therefore 280 degrees, the complementary angle 80 degrees of which represents the bearing of the radio beam to the longitudinal axis of the plane. Fig. 5 shows a modification embodying a cursor DFC, a dial D and a second dial AS whereby both compass and radio beam bearings may be checked, the stationary mirror Mh in this case being below the rotatable mirror Mt, which mirrors show the images of the respective marks or stakes.
Patent GB-827781-A (GB)
Title: Improvements in flexible couplings for power transmission shafts
Inventor: WILLIAMS WILLIAM ALBERT
IPC: F16D3/74
Filed: 1957-05-24
Abstract: 827,781. Universal joints. WOOD'S SONS CO., T. B. May 24, 1957, No. 16568/57. Class 80 (2). A flexible shaft coupling comprises a moulded rubber sleeve 29 having internal teeth 32 maintained in engagement with complementary teeth 27 on shaft hubs 5 by the following alternative means. As shown, overlying flanges 20 maintain engagement and such flanges may (Figs. 12 and 13, not shown) be internally toothed to engage external teeth on the rubber sleeve. The flanges may (Fig. 8, not shown) have longitudinally extending fingers between which are abutment lugs formed on the outside of the rubber sleeve to decrease relative turning movement between the shafts under load. In Figs. 14 to 20 (not shown) flat or circular section metal bands are sprung into grooves in the ends of the rubber sleeve or secured by adhesive thereto, axial displacement of the sleeve being prevented by snap-rings on the hubs or by radial flanges on the bonds. The teeth 32 may have an included angle of 60 to 90 degrees and the teeth on the rubber sleeve may be shorter than those on the hub. To facilitate assembly the rubber sleeve may have a straight or toothed longitudinal split 34 with or without dowels. In Figs. 21 to 23 (not shown) the rubber sleeve has a deep central groove internal or external and external or internal grooves on each side, producing a corrugated cross-section.
Patent GB-420312-A (GB)
Title: Improvements in or relating to puzzles
IPC: A63F9/06
Filed: 1933-06-10
Abstract: 420,312. Jig-saw puzzles. CHAD VALLEY CO., Ltd., Harborne, and WHITEHOUSE, F. R. B., Fairdays, Barlows Road, Edgbaston, both in Birmingham. June 10, 1933, No. 16633. [Class 132 (iii)] A jig-saw puzzle of six-point star or substantially rectangular form is assembled in a recess 14 in a well-mount 13 and comprises a number of polygonal pieces 10 having markings 11 parallel to one or more edges of the pieces, the markings occurring in the majority or all of the pieces to form a continuous line of arbitrary form serving only as a guide to the solution of the puzzle and otherwise meaningless. The continuous line may be replaced by a broken or chain line, or a ribbon or band and the ends may meet. The wellmount may be replaced by a raised framework of shape similar to that of the outline of the assembled puzzle. Specification 403,691 is referred to.
Patent GB-662012-A (GB)
Title: Improvements in and relating to power driven sewing machines
IPC: D05B51/00
Filed: 1949-06-23
Abstract: 662,012. Sewing-machines. TEXTILE MACHINERY INNOVATIONS, Ltd., and BLACKMAN, A. S. June 23, 1949, No. 16723/49. Class 112. A thread-operated electrical stop device for a sewing-machine comprises, a metal rod 8 having a weighted base portion 10, 11 slidably mounted in a metal casing 5 the upper end of which is closed by a metal member 7 having an axial bore in which the rod slides, and the upper end of the rod external to the casing is formed with a hook 9 adapted to engage the thread so that breakage of the thread permits the rod to fall into the casing to control the electrical circuit to stop the machine. One wire a of the circuit is in electrical contact with the casing and the other wire b is attached to a metal disc 15 insulated from the casing and engaged by the point 17 of the rod when the needle thread breaks. In a modification spring separated contacts are pressed together by the point of the rod. Visible or audible warning devices may be operated when the machine is stopped by the device. The machine may be fitted with the device described in Specification 625,343 to stop the machine on breakage of the bobbin thread.
Patent GB-1344037-A (GB)
Title: Method of making porous polyurethane films and porous polyurethane films made thereby
IPC: B29C44/12
Filed: 1972-04-11
Abstract: 1344037 Porous polyurethane films; laminates POTTERS INDUSTRIES Inc 11 April 1972 [15 April 1971] 16723/72 Headings B5B and B5N [Also in Division C3] A porous polyurethane film is obtained by casting a film of an uncured polyurethane film containing glass beads on to a release surface and then curing the film. The glass beads are preferably spherical and may be present in a proportion of up to 30 parts by weight per 100 parts by weight of the resin. The film may be laminated with a substrate such as cotton duck or with a non-woven bonded fibre substrate, using acrylic or urethane emulsion adhesives. The film may also be attached to a carrier layer by the curing reaction.
Patent GB-399764-A (GB)
Title: Process and apparatus for converting liquid substances into the form of powder or granules
IPC: B01J2/02
Filed: 1933-06-12
Abstract: <PICT:0399764/III/1> Pasty masses, solutions, or emulsions are dried and converted into powdered or granular form by spreading the liquid centrifugally over a rotating surface B, then dividing the surface radially into rays by means of blades E which direct the solution alternately upwardly and downwardly, the rays being united to form two films on the upper and lower surfaces c, c<1> of an outer ring rotating in fixed relation with the surface B.  In a modification the films thus formed are again each divided in a similar fashion to form a double number of films and so repeatedly if required. The rotating discs may be heated and the slope of the surfaces C, C<1> adjusted to suit the liquid materials treated.
Patent GB-1136830-A (GB)
Title: Rubber antiozonant mixture and process for using the same
IPC: C08K5/18
Filed: 1966-04-18
Abstract: 1,136,830. Antiozonants for rubber. H. NEWBY (Universal Oil Products Co.). 18 April, 1966, No. 16805/66. Headings C3P and C3Q.  Natural and synthetic rubbers contain as an antiozonant a mixture containing 50-90% by wt. of a N,N<SP>1</SP>-disecondary alkyl-p-phenylene diamine, an N-alkyl-N1-phenyl-p-phenylene diamine or an N,N<SP>1</SP>-dicycloalkyl-p-phenylenediamine and 50-10% by wt. of at least one compound of the formula wherein R is a C 1-12  alkyl group and R<SP>1</SP> is hydrogen or a C 1-12  alkyl group.
Patent GB-564408-A (GB)
Title: Improvements in means for actuating aircraft control surfaces
IPC: B64C13/00
Filed: 1941-12-30
Abstract: 564,408. Controlling aircraft. PHILLIPS & POWIS AIRCRAFT, Ltd., and, MILES, G. H. Dec. 30, 1941, No. 16806. [Class 4] An turcraft control surface is fitted with a servo-tab acted upon by an inertia device to cause the tab to exercise a force upon the control surface in a direction tending to reduce any excessive displacement effected by the pilot. In one form, an elevator 5, Fig. 2, directly operable by a lever 8 is provided with a tab 9 connected by links 11, 12 to a bell-crank lever 14 carrying a weight 16. Normally, the lever 14 is maintained in a central position by spring- loaded arms 17, 18 and the joint 13 between the links 11, 12 is coaxial with the elevator pivot, but should the acceleration resulting from a movement of the elevator exceed a predetermined limit, the tab 9 is moved in a direction to reduce the angular displacement of the elevator. Fig. 3 shows another form in which the elevator 5 is controlled by the pilot solely through the servo tab 9 for which purpose it is connected by a link 23 to a spindle 27 connecting two levers 28 pivoted at 26 on opposite sides of a member 25 on the end of a pilot-operated jack 24. The levers 28 carry weights 29 and are biassed into the position shown by springs. Excessive acceleration results in the levers 28 swinging about the pivot 26 and altering the distance between 'the end of the link 23 and the jack 24. The link 23 and an arm 22 on the tab 9 are enclosed in fairings 30, 31. The device may be applied to ailerons, rudders or flaps in addition to elevators. Specification 468,062 is referred to.