baber/WOPTO huggingface dataset:
Patent GB-663883-A (GB)
Title: Improvements in or relating to circuits for generating triangular pulses
IPC: H03K5/01
Filed: 1949-04-28
Abstract: 663,883. Valve circuits. PHILCO CORPORATION. April 28, 1949 [April 28, 1948], No. 11319/49. Class 40 (vi). In a circuit for generating a triangular waveform a capacitor is charged from a D.C. source via a resistive network whilst an associated valve is cutoff and is subsequently discharged through the valve, the voltage across the capacitor being applied to an amplifier which has two feed-back circuits between its output and the charge-discharge circuit of the capacitor, thus linearizing the sloping sides of the triangular waveform. The Figure shows a triangular waveform generator in which a capacitor 4 is charged through resistors 25, 6 and 5 from the D.C. supply whilst valve 2 is cut-off by a negative going pulse applied to the grid circuit from source 3. At the termination of the negative pulse valve 2 is rendered conducting and capacitor 4 is discharged through the valve, the voltage across capacitor 4 is applied to the cathode follower stage 10 and the output taken across cathode load resistor 13. The linearity of the leading edge of the wave is improved by feed-back via lead 19 and capacitor 22 to the junction of resistors 5 and 6, which tends to maintain a constant voltage across resistor 5. A second feed-back path from the anode circuit of valve 10 via lead 18 and capacitor 21 to the screen grid of valve 2 linearizes the trailing edge of the triangular wave. Adjustments of potentiometers 25 and 28 enables the rate of charging and discharging of capacitor 4 to be respectively varied.
Patent GB-787978-A (GB)
Title: Improvements in or relating to a tape recorder for a movable vehicle
Inventor: LEKAS JOHN P
IPC: G11B5/00
Filed: 1954-04-20
Abstract: 787,978. Recording-apparatus. NORTH AMERICAN AVIATION, Inc. April 20, 1954, No. 11342/54. Class 106 (4). A tape recorder for use in an aircraft having a predetermined potential flight duration time comprises a pair 45 of alternately operable devices for recording electrical signals representative of operating parameters of the aircraft on a magnetic tape 6 in at least two channels, the length of the tape 6 being sufficient for less than half the flight duration, an erasing head 12J adjacent each recording head 12A, and means 42, 52 for simultaneously reversing the direction of travel of the tape at the ends thereof and for alternating the operation of the recording devices to thereby preserve temporarily a record of electrical signals recorded during the immediate past interval without providing sufficient tape to last for an entire flight. The magnetic tape 6 is driven to and fro across a lamination 13 supporting a plurality of recording heads and erasing heads as described in Specification 787,980, [Group XXXVIII], by driving means as described in Specification 787,979. A pick-up head 12 on the lamination 13 is connected to two filters 40, 41 tuned to the respective frequencies of two signals placed one at each end of a channel on the tape 6 monitored by the head 12. When either signal is picked up by the head 12 the appropriate filter 40, 41 sends a signal to a relay 42 which is then actuated to cause a tape-drive motor 9 to reverse the direction of travel of the tape and a channel selector 52 to switch the input signals from aircraft instruments 48, 49, 50, 51 from one set of recording heads 12A, 12C, 12E, 12G to a second set 12B, 12D, 12F, 12H and to switch an erasing voltage source 53 from erasing heads 12J, 12K, 12L, 12M to 12N, 12P, 12Q, 12R or vice versa.
Patent GB-326685-A (GB)
Title: Electric illumination for tents
IPC: F21V33/00
Filed: 1929-04-12
Abstract: 326,685. Fabianke, E. April 12, 1929. Battery lamps combined with tent poles.-Electric illumination for tents is provided by fitting a metal casing 4 on the top of the pole to receive a cell X the poles of which connect with contacts 8, 9 disposed in recesses in the pole and connecting with a contact 15 and with the bulb cap contact respectively. An aperture is provided in the casing to receive the bulb 11 and its reflector 12, which are held therein by an extension 14 engaging the contact 15. The usual metallic cap 3 for a tent pole has a bayonet joint connection with the metal casing. The metal casing is rotatable so that when the lamp is not in position the recess in the pole may be covered.
Patent GB-1203942-A (GB)
Title: Method of and apparatus for making soldered joints to electric cable conductors, sheaths or armouring
Inventor: SEARLE DAVID DONALD
IPC: B23K1/00
Filed: 1967-03-10
Abstract: 1,203,942. Clamps. BRITISH INSULATED CALLENDERS CABLES Ltd. 8 March, 1968  l [10 March, 1967], No. 11377/67. Heading E2B. [Also in Divisions C4, C5, B3 and H2] A connector for an earth continuity conductor to be secured to a lead sheath 8 of a cable is formed by a clamp 1 having two arcuate copper members pivotally connected together at one end by a bolt 3 and pins 4 and connected together at the other end by a bolt 9. Each arcuate member has a recess 6 filled with plumbers solder. A clip to be tightened on a body to be soldered may form or carry one or more receptacles for exothermic material for providing the soldering heat. Each receptacle may be a trough of arcuate shape and the troughs are preferably on diametrically opposite sides of the clip and have securable lids.
Patent GB-994199-A (GB)
Title: Hydrated magnesium carbonates and their production
IPC: C08K3/26
Filed: 1962-03-26
Abstract: The invention comprises hydrated magnesium carbonates, <FORM:0994199/C1/1> where x is a number from 5 to 7 and y is an integer from 9 to 13. The compounds may be made by addition of CO2 to a slurry of Mg(OH)2 in water until a pH of from 7.5 to 9.0 is reached, separating the solids from the slurry and drying them at below 70 DEG  C.  The CO2 may be introduced into the slurry by spraying gas mixtures containing CO2, or by addition of solid CO2. Thermal decomposition curves of (MgCO3)3 Mg(OH(2.3H2O and (MgCO3)3.Mg(OH)2.10H2O are shown.ALSO:The invention comprises polymeric compositions and insulating materials containing hydrated magnesium carbonates, <FORM:0994199/C3/1> where x is a number from 5 to 7 and y is an integer from 9 to 13. Example (2) relates to the preparation of a polyurethane foam containing (MgCO3)3.Mg(OH)2.10H2O. This carbonate is mixed with glycol-adipic acid polyester and the mixture is reacted with naphthalene diisocyanate. Water is added resulting in foaming of the mix.  Example (4) relates to chlorosulphonated polyethylene, to which (Mg-CO3)3. Mg(OH)2.10H2\O, titanium dioxide, calcium carbonate, and magnesium oxide were added, the mixture being passed through rolls to form sheets which are vulcanized.  Example (3) describes the preparation of an insulating material by addition of (MgCO3)3.Mg(OH)2. -10H2\O to asbestos fibre, diatomaceous earth, blast furnace slag, and Na2CO3 to form a mixture which is slurried with water, the slurry being heated to 105 DEG  C. to form a cellular material.  This material is broken up into lumps to be compressed in a mould into any desired shape.ALSO:A refractory surface is coated with a solution consisting of 20% acetone and 80% polyvinyl alcohol.  The article is vacuum-dried at 30  DEG C. and 0,5 p.s.i.a. for 5 hours.
Patent GB-464310-A (GB)
Title: Improvements relating to slicing-machine slice-receiving trays
IPC: B26D7/32
Filed: 1936-04-22
Abstract: 464,310. Slicing bread. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd. (U.S. Slicing Machine Co.) April 22, 1936, No. 11530. [Class 5 (i)] [Also in Groups XVII and VI] The receiving tray of a bread &c. slicing- machine is provided with a stop which is movable by slices advancing on edge and is normally constrained to support them, and is freed towards the end of its travel to permit it to collapse out of the way of the slices. As shown, a slicing-machine A, Fig. 1, is arranged to cut a loaf C on a feed tray so that the slices E are received on a tray D. The tray is open at the sides and ends, and is formed in the bottom wall with a slot 17, below which a trackway is mounted. A slide 19 on the trackway carries a pivoted stop 15 prevented from turning to the right by a stop 24 and normally held in the vertical position by a spring 25. The slide is moved close to the slicing machine so that it engages and supports the first slice cut, and moves away as the assembly of slices progresses, as shown in Fig. 5. A bag F is placed over the tray so that the bottom touches the end of the tray, the upper side being held open by an adjustable resilient arm 50. When the slicing of the loaf is complete, the end nearest the machine is pushed to the left, the stop moving with it at the front end. The spring 25 is tripped by a shoulder 28 near the end of the tray and the stop turns down into a horizontal position and allows the slices to move over it into the bag as shown in Fig. 6. As the height of the stop is only a fraction of that of a slice, when it moves into the inoperative position, there is less distance between the bottom of the bag and the forward slice, so that, if the forward slice does tilt, it will not lie flat or sufficiently tilted to cause an obstruction. In order to allow for lateral adjustment, the tray may comprise two members 35, 36, Fig. 3. The part 35 is provided with a lateral extension 37 carrying the bearings 38 by which the tray is attached to the machine by arms 39. The part 36 underlies the part 35 and is laterally adjustable by means of pins in a rack bar engaging oblique slots. A resilient extension provides continuity with the part 37. In a modification, the slicing- machine slices the entire loaf in one operation and the tray comprises a bottom wall and one side wall only, being set at an angle to form a trough.
Patent GB-1218826-A (GB)
Title: Multi-purpose mobile crane
Inventor: LIEBHERR HANS
IPC: B66C23/76
Filed: 1968-03-08
Abstract: 1,218,826. Jib cranes. H. LIEBHERR. 8 March, 1968, No. 11546/68. Heading B8B. A mobile crane comprises a mast 6 pivotally mounted on a rotary platform 3 whereby it can tilt to thereby act as a jib or can be positioned vertically to act as a tower, and a main jib 13 pivotally connected to the mast for use when the latter is used as a tower, the jib lying on the opposite side of the mast from the side thereof which faces the ground when the mast is being used as a jib, and a hook being provided on the last mentioned side of the mast. A counterweight 24 is selectively slidably carried at either end of the platform 3. The mast 6 is in three sections 8, 9, 10 moved relative to each other by a ram 11, or by a cable (Fig. 5 (not shown). An auxiliary jib 15 is pivoted by a cable 16. A cable extending from the tip of the main jib via the auxiliary jib to an anchorage on the platform may be provided to swing the jib 13 away from the mast when this is extended, Fig. 6 (not shown).
Patent GB-929906-A (GB)
Title: Improvements in power transmission systems comprising a slip coupling or clutch interposed between a driving shaft and a driven shaft
Inventor: PONSY LOUIS EMILE
IPC: H02P29/00
Filed: 1961-03-29
Abstract: 929,906. Automatic speed control systems; driving generators. PRECISION MECANIQUE LABINAL. March 29, 1961, No. 11547/61. Classes 35 and 38 (4). In a system for maintaining constant speed of an alternator 5, 6 by a variable slip coupling, two such couplings 2, 4 and 11, 12, which may be eddy-current type, are provided, the input member 2 of one being driven directly from an input shaft 1 while that, 12, of the other is driven through step-up gears 13, and means responsive to the speed of the input shaft select for use that coupling which results in the slip being a minimum. The means may comprise an A.C. tachogenerator 15 and a filter 16 which operate a relay 14 to connect the output of a frequency regulator 9 to the energizing coil of the appropriate coupling 4 or 11. Device 9, described in Specification 853,977, is connected in the load circuit of the alternator and its output depends upon the load current and the difference between the actual and the desired frequency. A voltage-sensitive device 8 controls the excitation of the alternator rotor 5, which is mounted on a hollow shaft 3 common with the coupling members 4 and 11. During starting, the shafts 1, 3 are mechanically coupled by an arrangement, not shown, which is disengaged by centrifugal means. It is stated that the slip couplings may alternatively be hydraulic, friction or powder types, that both may be energized together during changeover, that there may be more than two, and that the gearing may be interposed between one coupling and the alternator rotor.
Patent GB-968237-A (GB)
Title: Improvements in or relating to electromagnetic polarized switching devices
IPC: H01H51/28
Filed: 1962-03-27
Abstract: 968,237. Electromagnetic relays. WESTERN ELECTRIC CO. Inc. March 27, 1962 [March 31, 1961], No. 11569/62. Heading H2B. A polarized relay incorporating a sealed magnetic contact device 17 with mercurywetted contacts such as that described in Specification 691,207 has two coils 13, 14 wound on separate branches 11, 12 of a core of non- remanent magnetic material. Operation is effected by additve energization of the coils (e.g. windings in parallel) so that magnetic flux is transferred to the contact area by member 41 of remanent magnetic material which will effect contact operation if its magnetization is reversed by short current pulses in the windings in the manner described in Specification 870,906. The relay is polarized by opposed permanent magnets 23, 34. In Fig. 4 the windings are mounted on cores 43, 44 interconnected by magnetic members 51, 52 and the latter extends to the contact area. In this embodiment the member 52 is non-remanent and current pulses must be of sufficient length to allow contact change-over and the polarizing magnets provide the contact holding flux in both stable positions.
Patent GB-1454166-A (GB)
Title: Pyrimidine derivatives
IPC: C07D239/50
Filed: 1972-08-01
Abstract: 1454166 Pyrimidines WELLCOME FOUNDATION Ltd 1 Nov 1973 [1 Aug 1972] 11592/76 Divided out of 1454165 Heading C2C Novel compounds of Formula II wherein Z is an oxygen atom or an oxime protecting group therefor, R is a lower alkyl group, optionally substituted with a hydroxy group, and R<SP>1</SP> and R<SP>2</SP> are the same or different and each is a lower alkyl group having together at least 3 carbon atoms or R<SP>1</SP> and R<SP>2</SP>, having in total 4 to 6 carbon atoms, form a cycloalkyl group together with the carbon atom substituted by said R<SP>1</SP> and R<SP>2</SP> are prepared together with intermediates as shown in reaction scheme A Further intermediates are prepared as shown in reaction scheme B
Patent GB-1447271-A (GB)
Title: Carburizing furnace with integral quench tank
IPC: C23C8/06
Filed: 1973-03-09
Abstract: 1447271 Heat-treatment and carburizing furnace GENERAL ENG CO (RADCLIFFE) Ltd 22 April 1974 [9 March 1973] 11651/73 Headings C7N and C7U [Also in Division F4] A carburizing furnace includes a first chamber which may be evacuated and into which a treatment gas may subsequently be introduced, the chamber having a separable hearth which can be moved into a second chamber for quenching. In the particular embodiment the furnace includes a heating chamber 10 having elements 16, refractory metal heat shields 15 and a base 14 on which are mounted workpiece supports 17. The base is attached by brackets 18 to endless chains 19 whereby the whole assembly of base, heaters and supports is lowered into oil bath 24. Chamber 11 is evacuated through line 29, and carburizing gas is supplied through line 30.
Patent GB-935749-A (GB)
Title: Rotary cutter
IPC: B27G13/10
Filed: 1960-06-03
Abstract: 935,749. Milling cutters. L. OPPOLD. June 3, 1960 [June 15, 1959], No. 11691/63. Divided out of 935,748. Class 83 (3). [Also in Group XXIII] A rotary cutter comprises a disc 10 having one or more cutter blades 15 mounted thereon, each with a cutting edge 17 located outwardly of the periphery of the disc and each blade, in the direction of rotation of the disc, being preceded by a guard plate 16 also projecting from the periphery of the disc with its projecting end 19 traversing a circle of smaller radius than that traversed by the cutting edge of the blade, the blade and guard plate, or each associated pair thereof, being secured by soldering to the disc or a member supported thereon. The blades and guard plates may be soldered to notches 13, 14 in the end walls of recesses 11, 12 which are offset from radial lines of the disc, the cutting edges of the blades being arranged to traverse a circle of greater diameter, e.g. about 0.8 mm., than that of the ends of the guard plates. In another embodiment, the blades and guard plates are secured in separate recesses and may extend obliquely to the axis of the disc. In a further embodiment, each blade 35, Fig. 4, and its associated guard plate 36 are secured to recesses in a cylindrical block 37 rotatably adjustable in a recess in the disc 10.
Patent GB-564792-A (GB)
Title: Improved reaper-machine fingers
IPC: A01D34/13
Filed: 1943-07-19
Abstract: 564,792. Reaping-machines. NICHOLSON, F. July 19, 1943, No. 11695. [Class 6 (iii)] The finger a of the cutting mechanism of a reaping-machine is formed with a groove in which is fitted a hardened ledger plate i, the latter being riveted to the finger and having splayed rear corners k which engage with corresponding edges in the groove. The wearing plate provides a supporting surface for the full width of the knife bar d, the knives c of which, in the construction shown, are supported by hardened plates f also riveted to the fingers a.
Patent GB-117632-A (GB)
Title: Steam or Gas Engines.
IPC: F01B25/00
Filed: 1918-07-17
Abstract: 117,632. Maschinenfabrik Oerlikon. May 16, 1917, [Convention date]. Energy-absorbing elements. - The speed of steam or gas engines is controlled by means of a fan a mounted on the engine shaft and provided with a delivery opening of variable size, so that, when the load on the engine decreases and the speed increases, the opening is automatically increased to allow the fan to take more power from the engine. The opening may be increased by the increased air pressure of the fan or by an electro-magnetic device actuated by a dynamo driven by the engine, or by an ordinary centrifugal governor. In another form a fan is used in which the setting of the vanes is modified by variations in the speed of the engine so as to vary the size of the delivery orifice or passage.
Patent GB-538510-A (GB)
Title: Improvements in the manufacture of coffee substitutes
IPC: A23F5/44
Filed: 1940-07-16
Abstract: 538,510. Coffee substitutes. WOODS, S. July 16, 1940, No. 11752. [Class 129] A coffee substitute is made by drying barley until the moisture content is 5-10 per cent, then roasting, cooling, and grinding. From 2 to 5 per cent of dried, roasted, and ground chicory or dandelion root may be added.
Patent GB-650490-A (GB)
Title: Improvements in or relating to apparatus for treating concentrated pulp residual liquor or the like
IPC: F23G7/04
Filed: 1948-04-30
Abstract: 650,490. Burning waste liquor. BABCOCK & WILCOX, Ltd. April 30, 1948, No. 11872. Convention date, May 2,1947. Drawings to Specification. [Class 51(i)] A furnace for burning concentrated pulp residual liquor provided with an atomizer arranged to spray liquor into the furnace in a downwardly inclined direction is characterized in that the atomizer passes through a sleeve forming part of a wall box through an opening in the furnace wall and terminates in a spray discharge tip adjacent the inner face of the wall, means being provided for supplying gaseous fluid under pressure through said opening to prevent or reduce the accumulation of smelt on the lower part of the atomizer. The apparatus is identical with that disclosed in Specification 649,159. Specification 497,357 also is referred to.
Patent GB-962280-A (GB)
Title: Therapeutic compositions comprising furan derivatives
Filed: 1962-03-28
Abstract: 2-(p-Hydroxybenzoyl)-furan (I) and 5-ethyl-2-(p-hydroxybenzoyl)-furan (II) are prepared by reacting furoyl chloride or 5-ethyl-furoyl chloride with phenol in the presence of aluminium chloride. 2, 5-Dimethyl-3-(p-methoxybenzoyl)-furan (III) is prepared by reacting 2, 5-dimethyl-furan with p-methoxybenzoyl chloride in the presence of stannic chloride.  Compound III above is converted to 2, 5-dimethyl-3-(p-hydroxybenzoyl)-furan (IV) by treatment with pyridine hydrochloride. Iodination under alkaline conditions of compounds I, II and IV above gives 2-(31,51-diiodo-41-hydroxybenzoyl)-furan, 5-ethyl-2-(31,51-diiodo-41-hydroxybenzoyl)-furan and 2, 5-dimethyl-3-(31, 51-diiodo-41-hydroxybenzoyl)-furan respectively.ALSO:Pharmaceutical compositions having coronary dilatory and analeptic effect comprise a carrier and a compound of the general formula <FORM:0962280/A5-A6/1> p  wherein R1 represents a hydrogen atom, a C1-4 alkyl radical or a benzoyl radical, R2 represents a hydrogen atom when R1 is a benzoyl radical or a radical when R1 is a hydrogen atom or alkyl radical and R3 represents a hydrogen atom or a C1-4 alkyl radical, benzyl radical optionally being substituted by at least one halogen atom and particularly by two iodine atoms at the 31 and 51 positions.  The compositions may be in conventional forms for oral, parenteral and rectal administration, e.g. a tablet, capsule, dragee, syrup, elixir, aqueous injection or suppository.
Patent GB-1193421-A (GB)
Title: Improvements in or relating to Glow Discharge Indicator Tubes
Inventor: GLACKIN JAMES MERIDITH
IPC: H01J17/49
Filed: 1966-03-18
Abstract: 1,193,421. Glow-discharge lamps. BELL PUNCH CO. Ltd. 16 June, 1967 [18 March, 1966], No. 11925/66. Heading H1D. An indicator tube comprising an anode and a plurality of cathodes shaped as indicia, e.g. numbers, is characterized by the provision of a generally cylindrical envelope which is flattened at the sides so that a plurality of tubes can be arranged closer together. When a number of tubes are arranged side by side in an indicating panel for a calculating machine, it is desirable that the distance between centres of tubes should be equal to the height of the indicia. The tubes may be filled with neon at about 100 mm. pressure with excess mercury.
Patent GB-683227-A (GB)
Title: Improvements in or relating to the construction of permeable bodies for filtration purposes
Inventor: MAY JACK
IPC: B01D29/15
Filed: 1950-05-12
Abstract: 683,227. Edge filters. SELF-CLEANING FILTERS, Ltd. Dec. 11, 1950 [May 12, 1950], No. 11932/50. Class 46 [Also in Group XXVIII] A filter element comprises a helical metal spring and a secondary winding in the oper pitch of the spring, the ends of the secondary winding being secured an even sealing pressure thus being obtained on both sides of the secondary winding. A helical metal spring 5, Fig. 2, is first mounted loosely on a'perforated tube 1 and a secondary winding 6 of a liquidpermeable material is secured by passing one end through a slot in a nut 8, Fig. 3, and is ther wound in the open pitch of the spring 5. The upper end of the secondary winding 6 is passed between two slotted washers 9, Fig. 2, and secured by a wing-nut 10. The spring 5 thus abuts the lower of the two upper washers 9 and the nut 8. The tension of the winding 6 and the spacing of the turns of the spring 5 may be simultaneously adjusted by turning the nut 8 on the thread 4 of the tube 1. A .nipple 11 bearing a resilient washer 12, metal washer .13 and wing-nut 14 is then screwed on to the thread 4 and the wing-nut 14 finally tightened up. The external thread on the nipple 11 serves to mount the element in a header. The secondary winding preferably consists of a multiple fine-strand twisted wire, glass or asbestos yarn, nylon, linen, cotton, wool or other fibrous cord. The perforated core 1 may be replaced by a fluted spindle. The secondary winding 6 may be impregnated with silica and the metallic winding 5 may have a catalytic coating of platinum or silver chloride.