baber/WOPTO huggingface dataset:
Patent GB-987948-A (GB)
Title: Improvements in or relating to amplifying circuits for electronic digital computers
Inventor: BERGER JAMES KENT
IPC: G11B20/16
Filed: 1963-08-27
Abstract: 987,948. Transistor amplifying and pulse generating circuits. GENERAL PRECISION Inc. Aug. 27, 1963, No. 33811/63. Heading H3T. An arrangement for amplifying clock signals from a movable magnetic memory and generating sharp clock pulses in response thereto comprises a pre-amplifier stage feeding into a series resonant circuit which provides discrimination against random noise. This is coupled to a squaring circuit feeding a differentiating circuit, thereby generating trigger pulses which trigger a monostable flip-flop to produce a series of output pulses short in duration compared with a corresponding half-cycle of sine wave clock signal input. Sine wave signals from read head winding 18 are applied in push-pull to the bases of a pair of PNP transistors 24, 26, via series resistors 20, 22. The transistors 24, 26 form an emitter-coupled pair, individual emitter resistors 44, 48 being provided together with a coupling capacitor 28. The collector circuits comprise resistors 34, 36, the collectors being direct coupled to the bases of NPN transistors 30, 32 which form a second emitter coupled pair having individual emitter resistors 38, 40 and a coupling capacitor 50. The collector circuits comprise resistors 42, 46, negative feed-back being provided between these collectors and the bases of the opposite first stage transistors by means of resistors 52, 54. The output is taken from the collector of transistor 30 and is applied via series resonant circuit 102, 104, which discriminates against random noise, to the base of a transistor 106 which acts as a squarer, being driven between cut-off and saturation. Diode 108 is provided across the base-emitter path, being conductive when transistor 106 is driven non-conductive and maintaining the same load on the preceding circuit as is present when 106 is driven conductive. The square wave output from the collector of transistor 106 is differentiated by a circuit comprising capacitor 112 and resistor 114, the positive-going components of the sharp pulses so produced being passed by a diode 116 to trigger a monostable flip-flop 13. The pulses are applied to the base of a transistor 118 the collector of which is coupled to the output terminal C p  and base of transistor 134 over an emitter-follower 126 and RC network 128, 130, the collector of transistor 134 being back-coupled to the base of transistor 118 over capacitor 142. A diode 124 shunts the baseemitter path of transistor 126. Transistor 118 is normally biased conductive via resistors 120, 122, transistor 126 is slightly conductive and transistor 134 biased non-conductive via resistors 136, 128. Each positive pulse makes transistor 118 non-conductive, rendering transistor 126 fully conductive whereby the base of transistor 134 goes negative and it becomes conductive. Capacitor 142 holds transistor 118 non-conductive until it has charged sufficiently, whereupon the flip-flop restores to its original state.
Patent GB-306227-A (GB)
Title: Improvements in or relating to lasts
IPC: A43D3/02
Filed: 1927-12-15
Abstract: 306,227. Care, H. Dec. 15, 1927. Lasts.-In a two-part hinged last wherein the heel part is of open or skeleton formation to expose the inside of the work in the heel seat region so that this is available for heel attaching purposes without removal of the last, the heel part is furnished with an upstanding projection 8 at the rear exteriorly shaped to form a support for the back of the work. The heel part is connected to the fore part by a central forwardly extending hinge plate 4 on the heel part located in a vertical slot in the fore part and working on a transverse hinge pin 6.
Patent GB-463817-A (GB)
Title: Improvements in road-grading machines
IPC: E02F3/76
Filed: 1935-12-09
Abstract: 463,817. Road - grading machines. PARKES, F. S. Dec. 9, 1935, No. 34038. Convention date, Sept. 21. [Class 107] A road - grading machine is provided with two oppositely disposed scraper blades 15 either of which can be moved into or out of the operative position, the whole dual blade assembly being angularly adjustable both horizontally and vertically. The blades are carried by a blade circle plate 9 which is carried by a pivotally-mounted and adjustable sub-frame 7. The plate 9, in the construction shown, has lugs 10, each carrying a rocking lever 11, and to the opposite ends of each lever is pivoted at 13 a bracket 14 attached to a blade. A strut member 17 is pivoted to the upper end of each blade and is provided with a series of holes 18 for selective engagement with the pivot pin 13, whereby the inclination of each blade can be adjusted. Links 19 connect the ends of the levers 11 with rocking levers 20 attached to the opposite ends of a shaft 21 having bearing in the lugs 10. Rocking movements of the shaft, to raise one blade and lower the other, are effected bv a worm 23 actuated by a hand-wheel 29 and engaging with a toothed quadrant 22 secured to the shaft. By this arrangement of the blades, the machine can operate when moving backwardly and forwardly.
Patent GB-405092-A (GB)
Title: Manufacture of vat-dyestuff preparations
IPC: C09B67/28
Filed: 1932-12-02
Abstract: Vat-dyestuff pastes are prepared by making a stable reduction product of a dyestuff of the general formula:--  <FORM:0405092/IV/1> wherein X stands for alkyl or hydrogen, and R for an aromatic nucleus, especially a benzene nucleus, which may be substituted, into an aqueous paste and incorporating therein a derivative of zinc, iron or copper (with the exception of copper sulphate), and a water-soluble derivative of benzylsulphanilic acid, dimethylsulphanilic acid or a -naphthalene sulphonic acid.  The term "stable reduction products" refers to the products obtainable from 4.4<1> - dimethyl - 6.6<1> - dihalogenindigos by the processes of Specifications 334,878, 334,919, and 338,104, [all in Class 2 (iii), Dyes &c.], or obtainable in an analogous manner from other dyestuffs of the above general formula. These pastes retain good printing capacity on storage.  In an example the stable reduction product of 6.6<1>-dichloro-4.4<1>-dimethylthioindigo is mixed up in an aqueous paste with ferrous sulphate, glycerin and sodium benzylsulphanilate. Specification 389,915 also is referred to.  The Specification as open to inspection under Sect. 91 refers to the use in the above pastes of a water-soluble derivative of benzylsulphanilic acid or another hydrotropic substance, but this subject-matter does not appear in the Specification as accepted.
Patent GB-1431313-A (GB)
Title: Character display discharge tube
IPC: H01J17/49
Filed: 1973-07-18
Abstract: 1431313 Gas discharge display panels MATSUSHITA ELECTRONICS CORP 18 July 1973 [20 July 1972 25 Aug 1972] 34195/73 Heading H1D A character display discharge tube comprises an insulating base board 4 having an arangement of a number of discharge elements a 1 k 1 -a 7 k 7 , a 11 k 11 -a 17 k 17 , organized into groups each constituting a basic character form and each consisting of at least a cathode and an anode an insulating mask plate 5 located on said insulating base board and having many holes H 1 -H 7 , H 11 -H 17  individually leaving the respective discharge elements uncovered, and a transparent window plate 6 supporting a phosphor film 7 and located on said insulating mask plate 5, said discharge elements being spaced from said phosphor film at least by the insulating mask plate. The base board 4 comprises a stack of thin plates 1, 2, 3 of glass or ceramic. Each discharge element comprises an anode a and cathode k with the elements arranged in groups of seven. The anodes of each group are connected in common through a bus-bar extending between plates 2 and 3 to one of a number of terminals A 1 , A 2  &c. along one edge of the board. Corresponding cathodes of all the groups are connected in common through bus-bars extending between plates 1 and 2 to terminals k 1  to k 7  along another edge of the board. In an alternative embodiment (Fig. 4, not shown) a control grid is disposed between the anode and cathode of each discharge element. All anodes are connected to a single common terminal, while the control grids of each group are connected in common to one of a number of terminals along one edge of the base board. The discharge tube may be filled with He, a mixture of He and Ne, He and A, or He, Ne and A or a mixture of such gases and Hg vapour.
Patent GB-507327-A (GB)
Title: Improvements in adhesives
IPC: C09J121/00
Filed: 1937-12-13
Abstract: 507,327. Indiarubber ; making emulsions coating compositions. WINGFOOT CORPORATION. Dec. 13, 1937. No. 34421. Convention date, April 2. [Class 70] [Also in Group III] An adhesive comprises a natural or artificial rubber latex as the disperse phase of an emulsion with a solution or dispersion of a condensation derivative of rubber as the continuous phase. The latex may be vulcanized, or may contain polymerized chloroprene, and the rubber condensation derivative is the product obtained by treating rubber with the halide of an amphoteric element, e.g. as described in Specifications 306,390, [Class 70], and 451,595. Emulsifying agents such as solutions of casein or rosin may be used. The adhesive may be applied to artificial silk which is to be iiicorporated in rubber tyres or belts.
Patent GB-740957-A (GB)
Title: Improvements in mechanical or commutator rectifiers
IPC: H02M1/24
Filed: 1953-12-10
Abstract: 740,957. Rotary distributers. EMAG ELEKTRIZITATS-GES. Dec. 10, 1953 [Dec. 16, 1952], No. 34432/53. Drawings to Specification. Class 38(5) A mechanical rectifier for polyphase currents comprises a pair of axially-spaced coaxial stationary annular contact paths and a number of contact rollers rotatable about the axis of the contact paths so as to bridge said paths. Each path includes several contact segments, the number of which and the number of rollers being determined by the number of phases, the speed of rotation of the rollers and the current, examples being given. The two paths may be relatively rotatable so as to adjust the contact time.
Patent GB-1253959-A (GB)
Title: Double hose coupling
IPC: F16L39/00
Filed: 1970-07-16
Abstract: 1,253,959. Hose couplings. ELEKTRON CO. M.b.H., O. MOTSCH and I. OTT. 16 July, 1970 [18 Sept., 1969], No. 34529/70. Heading F2G. A detachable coupling for connecting coaxial tubes 31, 32 to a component 20 comprises two coaxial nipples 11 and 14 secured to the component 20 e.g. by a screw cap 12. The nipple 14 is integral with a flange 13 held in place by the cap 12. A hollow space 24 provides communication of conduit 22 with conduit 33 via borings 17 in the flange 13. In the embodiment of Fig. 2 (not shown) the sealing washer 23 is flat and ribs 18 in the bore of the outer nipple 11 holds the hose 32 on the nipple 14. The sealing washer 23 may be omitted and the coupling 10 and component 20 hermetically sealed.
Patent GB-1022746-A (GB)
Title: Electrodeposition of bright tin
IPC: C25D3/32
Filed: 1964-08-24
Abstract: An acid tin-plating bath includes as brightening agent compound of formula, X - CH = CH - Y, where X = C benzene, furane, or a pyridine ring, Y=formyl, alkyl, hydroxyalkyl, carboxyl, or acyl.  Examples are, styrene, cinnamyl alcohol, benzylidene acetone, 1-benzylidene-7-heptenal, and furyl acrylic acid. Optional additions include imidazoline compounds, formalin, pyrocatechol as antioxidant, and phenol sulphonic acid or poly glycol ethers as wetting agents. The tin salt may be stannous sulphate or fluoborate.
Patent GB-805158-A (GB)
Title: Process for the manufacture of 3:3:5-trimethyl-cyclohexanol
Inventor: PEPPIATT EDWARD GEORGE
Filed: 1953-12-11
Abstract: In a process for the manufacture of 3:3:5-trimethyl-cyclohexanol containing at least 40 per cent by weight of the low melting isomer, 3:3:5-trimethyl-cyclohexanol containing at least 70 per cent by weight of the high melting isomer is maintained under pressure in contact with a metallic nickel catalyst containing adsorbed hydrogen until 3:3:5-trimethyl-cyclohexanol having a desired content of 40 per cent or more of the low melting isomer has been formed.  The process may be carried out in the presence of hydrogen or other gas inert towards the catalyst.  The catalyst may be obtained by reducing nickel carbonate or oxide with nitrogen, or maybe Raney nickel, the word "Raney" being a Registered Trade Mark.  A solvent for the starting material and product may be employed, e.g. a saturated lower aliphatic alcohol, e.g. methanol or ethanol or a saturated aliphatic or cycloaliphatic hydrocarbon, e.g. hexane or cyclohexane.  The starting material may be obtained by reacting isophorone or dihydroisophorone with hydrogen under pressure at a temperature not exceeding 250 DEG  C. in the presence of metallic nickel as catalyst. Examples are furnished in which reduced metallic nickel is employed as catalyst (1-4), whilst methanol is employed as solvent in Example (5).  In example (6) isophorone is hydrogenated in the presence of reduced metallic nickel and the product is further heated in the presence of the catalyst to obtain a product containing 70 per cent of the low melting isomer.  Specification 805,157 is referred to.
Patent GB-521951-A (GB)
Title: A process for the manufacture of alloy steels by metallothermic reaction
IPC: C21B15/02
Filed: 1938-11-28
Abstract: 521,951. Alloys; crucibles. STRITTMATTER, M. L. A. Nov. 28, 1938, No. 34636. [Class 82 (i)] In a process for making alloy steels by the, exothermic reduction of a mixture of magnetic iron oxide, which may be an ore. alloying metals or their ores such as chromite, and oxidizing agents, the constituents of the charge are preheated to above 392‹F., and preferably above 572‹F., and the reaction is started while the constituents are still at that temperature. The crucible used may be one which widens towards its upper part, the side walls having an inclination of about 20 - 40 degrees to the vertical. Ignition may be effected at two or more spaced points on the surface of the charge. Chromium, nickel, molybdenum, vanadium, tungsten, manganese, and titanium steels are referred to. Reference has been directed by the Comptroller to Specification 486,908.
Patent GB-446077-A (GB)
Title: A new or improved method of drying or conditioning cigarettes
IPC: A24C5/60
Filed: 1934-10-24
Abstract: 446,077. Drying cigarettes. MOLINS, W. E., 2, Evelyn Street, Deptford, London. Oct. 24, 1934, No. 34707/33. Drawings to Specification. [Class 34 (ii)] A method of drying or conditioning cigarettes consists in applying heat to each cigarette so that the longitudinal surfaces of the cigarettes are subjected to greater heat than their end faces, whilst simultaneously permitting free escape of vapour from the cigarettes through their end faces. The invention is described with reference to apparatus which is claimed in Specification 446,221 and comprises a rotatable chamber having transversely-reciprocable members supporting the cigarettes while moving in one direction, and being inverted before moving in the opposite direction, during which latter movement the cigarettes are supported by the heated walls of the chamber.
Patent GB-1082040-A (GB)
Title: Crystal filter array
IPC: H03H9/70
Filed: 1966-08-03
Abstract: 1,082,040. Electro-mechanical filters. HUGHES AIRCRAFT CO. Aug. 3, 1966 [Sept. 3, 1965], No. 34745/66. Heading H3U. A comb filter comprises crystal filters 1, 2, 3, . . . n each providing heavy attenuation for signals at all frequencies except for those falling within the sharply defined narrow passband of the particular crystal filter, the respective passbands of the various crystal filters being contiguous so as to cover overall a wide frequency range. The comb filter is driven from a signal source 60 of variable frequency and is connected to the input leads 62, 70 of the crystal filters, transformer windings 66, 68 being connected between the leads. The crystal filters are similar to each other except that they have slightly different resonant frequencies. Considering, for example, crystal filter 1, this comprises a first quartz crystal 13 connected between the input lead 62 and a terminal 14 and a second quartz crystal 15 connected between the input lead 70 and the terminal 14. A load resistor 16 is connected between the terminal 14 and ground and an inductor 17 may be connected in parallel with the resistor 16 to neutralize the shunt capacitance of the crystals. The crystal 13 has a series resonant frequency at the lower end of the passband of the filter 1 and the crystal 15 has a series resonant frequency at the upper end of the passband. Each crystal may be as shown in Fig. 4 and have opposing circular faces 72, 74 with a silver electrode coating 76 of keyhole shape connected to a lead 82, the different resonant frequencies being obtained by varying the thickness of the crystal. In a modification, Fig. 6, instead of using a number of individual crystals, a single quartz slab of tapering section is employed on which the keyhole electrodes 113a, 113b, 115a, 115b . . . 1n5a, 1n5b, are plated at intervals, these electrodes being connected as in Fig. 1.
Patent GB-210595-A (GB)
Title: Improved construction of guard appliances for stamping or embossing machines
IPC: B21D55/00
Filed: 1922-12-21
Abstract: 210,595. Say, W., and Reynolds, H. A. Dec. 21, 1922. Guards; interconnecting guard with starting-gear.- In stamping or embossing machines, a guard adjustable in size is connected by a rod to a declutching- stop and, through a spring, to a treadle rod, so that the treadle can make its full movement even if the guard is obstructed. The space between the die 2 and matrix 3 of a stamping or embossing press is enclosable by a guard comprising U- shaped strips or rods 1 of metal &c., bent to suit the size of die &c. and secured in members 20, in which are also adjustably held strips or rods 1<a> to cover the rear of the die. The parts 20 are carried by telescopic members 4, 5 adjustably positioned on a rock-shaft 6, on one end of which is mounted an adjustable arm 7 connected by a spring 10 and rod 8 to a treadle 9 and by an adjustable rod 12 and spindle 14 to an oscillatory declutching-stop 16. The spring 10 allows the treadle 9 always to make a full movement, but if the guard is obstructed in its descent, the stop is not completely removed from the clutch trigger 17. The rock-shaft 6 carries at its other end an arm 21 adapted by contact with an adjustable stop 23 to prevent excessive movement of the guard, and provided with ratchet teeth engageable by a pawl 22 pivoted on the press frame so that actuation of the machine may be prevented in the absence of the authorized operator. The Provisional Specification describes the guard as being of ring or other form.
Patent GB-1481167-A (GB)
Title: Mandrels
IPC: B29C53/82
Filed: 1974-06-27
Abstract: 1481167 Winding; mandrels IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 27 June 1974 [23 July 1973] 34905/73 Heading B8G [Also in Division B5] A mandrel for producing an article by winding comprises a support means in the form of a shaft 7 by which the mandrel can be mounted in a winding machine, and, mounted thereon, a flexible impermeable bag 13 which can be filled with particulate material, e.g. sand to conform to the shape of a mould cavity 2 and then evacuated to form a rigid mandrel having the desired shape. The bag may be filled by means of a funnel 16, the mould preferably being vibrated to assist compaction. After filling the funnel is removed and the bag closed by an annular bush 19. The bag is evacuated through the hollow interior of the shaft 7, which is provided with holes 11. After removal from the mould the mandrel may be used to form an article by winding strip or filamentary material thereon and fixing the turns of the material to one another. The mandrel may be removed by releasing the vacuum and removing the particulate material from the bag. The material wound may be glass, nylon, or carbon filaments which can be fixed to one another by a matrix resin.
Patent GB-1049778-A (GB)
Title: Hospital bed
Inventor: HANMORE MAURICE RAYMOND
IPC: A61G7/015
Filed: 1962-09-13
Abstract: 1,049,778. Invalids' beds. H. W. EDGHILL EQUIPMENT Ltd. July 17, 1963 [Sept. 13, 1962; Jan. 15, 1963], Nos. 34994/62 and 1849/63. Heading A4J. A bed having a foot section 26 tiltable about axis 27, has either end of the head section 15 raisable by pivoting about the other end and a lowerable centre section 17 for toilet facilities. As shown, the head section 15 is pivotally attached to struts 29 at points 16 and the inner end of the section 15 is raised by rotating a shaft 32 which operates cranks 31 and raises the struts 29. The patient is then supported by the head section 15, and the centre section 17 may either be withdrawn completely or swung downwards between two vertical side boards 24 pivoting about an axis adjacent one of the side members 13, and the centre-section may be replaced by a bath or bed-pan. The outer end of the head section 15 may be raised and the foot section 26 lowered simultaneously, or vice versa, by a mechanism which comprises a trolley or bogie 34 mounted in channels 14 and struts 36 pivoted to the trolley 34 and to the outer end of each of the sections 15 and 26. The trolley is moved along the channels 14 by driving an endless chain 37 over two sprockets 38. The sections 15 and 26 are locked in their adjusted positions by engaging detents 43 on levers 41 and 33 in locking plates 42.
Patent GB-1366072-A (GB)
Title: Rotary mowers and like agricultural machines
IPC: A01D34/76
Filed: 1971-08-24
Abstract: 1366072 Rotary mower W T TEAGLE 24 Aug 1971 [20 July 19701 35055/70 Heading A1F . by belts 19 and 20 (Fig. 2) such that equal belt tension is applied to both cutter unit rotors 17 and 18. Belts 19 and 20, connected to sheave pulleys 21 and 22 on driving shaft 23 which may be connected directly to the power take-off shaft of tractor 2, pass from pulley 21, around pulley 17, then around pulley 22 on shaft 23, around pulley 18 before passing back to pulley 21. The driving shaft 23 may constitute a high-speed shaft of a gear box, the low speed shaft being connected to the tractor power take-off. Cutter units 4 and 5 comprise a central shaft supported by frame 1 and spaced from a ground engaging skid by spacer sleeves. The cutters 16 are yieldably secured to bifurcated blade carriers 14. Frame 1, detachably secured to a power lift linkage, is provided with a ground wheel 3 which may be omitted when the tractor is provided with hydraulic depth control.
Patent GB-643758-A (GB)
Title: A winding for commutating machines with large output per pole
IPC: H02K27/02
Filed: 1947-12-31
Abstract: 643,758. Winding layouts for dynamoelectric machines. MORAVIAN ELECTRICAL ENGINEERING WORKS, NATIONAL CORPORATION, and KLIMA, V. Dec. 31, 1947, No. 35061. Convention date, Sept. 26, 1946. [Class 35] The armature of a commutator machine is subdivided into as many, axially separated sections as there are conductors per slot and each conductor, after passing through one section of the armature moves success. ively into a new position in the same or next slot so that each conductor occupies each slot posi. tion. As shown in Fig. 1, for a double parallel wind. ing with four conductors per slot, the sections 12, 13, 14, 15 are successively displaced by “ of a slot pitch. A vector diagram is given showing how the voltages are deter. mined and it is stated that the effective number of slots is increased and the commutation improved by the mutual inductance between coils in various stages of commutation. It is shown that the voltages appearing at the commutators at each end are equal so that opposite segments 1, 1<SP>1</SP> &c. may be interconnected as shown in broken lines. In a modification, Fig. 3, a treble parallel single closed winding a, b, c, d which is shown as wave but could be lap, is arranged with its conductors successively displaced in the slots as described above. A further lap winding 31-36 having reduced pitch but a similar induced voltage to the wave winding is connected to the same commutator segments 1, 2, 3, ... &c. It is stated that this arrangement dispenses with the need for equalizing connections and that harmonica are suppressed.