baber/WOPTO huggingface dataset:
Patent GB-318279-A (GB)
Title: Improvements in moving coil microphones
IPC: H04R1/38
Filed: 1928-06-01
Abstract: 318,279. Lanchester, F. W. June 1, 1928. Magnetic instruments; diaphragms; loudspeakers; mouthpieces and attachments. - A moving coil microphone comprises a diaphragm disposed in a chamber interposed at a point intermediate the ends of a conduit open at both ends, the cross sectional area of the diaphragm chamber being greater than that of the conduit and the arrangement being such that the sound waves operating the diaphragm are adapted to pass around the periphery thereof, the direction of ripple propagation within the, diaphragm being the same as that of the sound waves traversing the sound inlet side of the diaphragm chamber. The areas of the cross sections of the conduit and diaphragm are preferably of the order of 1 : 12. Fig. 1 shows a construction in which a conical diaphragm H carries at its periphery a coil J located in the air gap G of a pot magnet B, the core A of which is bored with a passage D communicating with the extension pipe E. The diaphragm is made of paper, cork &c. and the angle of the cone is so adjusted that any disturbance initiated in the centre thereof travels outwards to the periphery with a velocity approximating to that of sound in air. The diaphragm is suspended by threads K carried upon pins L in the manner of piano tuning pegs. The outlet tube F is formed with a flanged portion N adapted to be fixed to the shell B, both the tubes E, F being provided with horns. The reception area of the inlet horn is preferably of elongated form, the shorter axis being arranged horizontally. The upper and lower walls of such a horn may consist of bent wood strips and the sides of parallel walls separated by a distance comparable to the shortest wave length to be received. The side walls are preferably made of a number of slots arranged not quite in contact. The distance through the microphone passage is approximately equal to the shortest distance from the inlet aperture to the outlet aperture in the surrounding space. In order to diminish resonance the outlet horn may be loosely plugged with a ball of cotton wool, cotton waste &c. In the modified construction, Fig. 2, the flange N is arranged to provide a larger chamber which is divided into two parts O, S by a baffle P supported by screws R. The form of the spaces O, S is preferably such that the area of the radially moving wave front is substantially constant.
Patent GB-543659-A (GB)
Title: Improvements in and relating to tractor hauled agricultural implements
IPC: A01B59/06
Filed: 1940-11-01
Abstract: 543,659. Tractor-hauled ploughs &c. BEGG, W. Nov. 1, 1940, No. 15997. [Class 6 (i)] Ploughs, ridgers, cultivators and like tractorhauled agricultural implements are provided with means for transversely adjusting the implement during use. Square-holed brackets c fixed to the forked frame a of a plough b are traversed by a square cross-bar d connected by links e to the tractor. Also attached to the frame a is a bracket f bearing a quadrant g toothed for engagement by a projection in a locking lever which is pivoted to a main lever h. At its opposite end the lever h is slotted and pivotally pinned in one of a series of holes m in the bar d. A link o pivoted to frame brackets n is connected to hydraulic means for raising and lowering the plough.
Patent GB-254330-A (GB)
Title: Process for the manufacture of moulds or tools used in the manufacture of glass
IPC: C03B9/48
Filed: 1926-06-25
Abstract: 254,330. Glasfabrik Akt.-Ges., and Stein, G. June 25, 1925, [Convention date]. Drawings to Specification. Materials for moulds. - A mould or tool for working glass, particularly a cast iron mould in which a pattern has been cut, is hardened by coating its working-surface with a layer of chromium. The mould may be coated with the chromium by electrolyte deposition from a solution of chromium chromate and chromic acid. in water.
Patent GB-257697-A (GB)
Title: Improvements in means and method of making paper boxes
IPC: B31B5/74
Filed: 1925-06-22
Abstract: 257,697. Bergstein, S. June 22, 1925. Coating and damping machines.-In a machine for forming paper boxes from blank held on formers 4a, the top folded end flaps are supplied with adhesive from a receptacle 5 reciprocated from the main shaft 16 to bring a number of spring - tensioned valve stops 77, which coact with ports in the bottom of the receptacle, into contact with the folded flaps to open the ports and allow adhesive to be deposited from each stop on to the flaps; each stop 77 has an internal stem 91 which normally contacts with the flaps to open the port, but which may be raised within the stop to render the port inoperative. The lower flaps are glued by contact with spring-tensioned pins 89 on a reciprocating member 82, the pins on their downward reciprocation passing into a receptacle 78 to collect adhesive; any of the pins may be rendered inoperative by holding them below their normal level in the member 82.
Patent GB-267076-A (GB)
Title: Improvements relating to electrically or mechanically driven rotors for centrifugal apparatus such as spinning cans for artificial silk
IPC: B04B9/12
Filed: 1926-06-25
Abstract: 267,076. Naamlooze Vennootschen de Vereenigde Ijzerfabrieken de Vijf. March 2, 1926, [Convention date]. Spindle apparatus; spindledriving apparatus.-A spindle 4, positively and flexibly coupled, as by a ball joint, with an electrically or mechanically driven rotor 1 of centrifugal apparatus such as the spinning cans used for artificial silk, is laterally supported relatively to the rotor by springs 5 or rubber plugs or like elastic means. In the arrangement shown, the springs engage an upstanding collar 6 on the rotor of an electromotor, the shaft 2 of which is carried in a part of the casing 24.
Patent GB-687550-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K9/28
Filed: 1951-07-06
Abstract: 687,550. Cooling dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. July 6, 1951 [July 19, 1950], No. 16088/51. Class 35. A machine for use in high altitude aircraft has the windings completely submerged in liquid, at least part of which is allowed to reach the commutator, the liquid being circulated in a closed system which includes an external cooler. As shown, the commutator 120 and the brushgear 122 are in a compartment formed by members 133, 136 such that most of the liquid is kept out but the liquid fills the rest of the machine and is passed through a heat-exchanger 127, 129, the cooling medium of which may be the fuel for propelling the aircraft. In a modification the liquid has complete access to the commutator as well as the remainder of the machine. The liquid may be ethyl glycol, halogenated diphenyl, tributyl phosphate or an oil und also reduces deterioration of the brushes. Specification 17716/11, [Class 35], is referred to.
Patent GB-275002-A (GB)
Title: A method of protecting iron or steel melts in furnaces or converters from oxidation and absorption of gases
IPC: C21C1/00
Filed: 1926-06-28
Abstract: 275,002. Zwiebel, B., June 28, 1926. Burners, mounting and adjusting.-Spray burners 4 for use in refining processes in connection with iron and steel furnaces where a reducing atmosphere over the surface of the slag is necessary are pivoted at 5 and 7. The pivoting at 5 allows the jet to be introduced at varying angles into the furnace and the pivoting at 7 allows the whole device to be withdrawn from the furnace for cleaning and repair and avoidance of wear due to heat when not in use.
Patent GB-218686-A (GB)
Title: Improvements in or relating to the frames and spring suspension of vehicles
IPC: B60G11/14
Filed: 1924-07-07
Abstract: 218,686. Laisne, L. July 5, 1923, [Convention date]. Tubular frames.-A tubular frame for vehicles, particularly motor cars, is suspended on the wheels by independent levers and resilient systems, the resilient systems being contained within the longitudinal frame members. The frame comprises longitudinal members a and transverse members b connected bv collars c on which are pivoted levers f, g carrying stub axles for the wheels i, k.
Patent GB-698061-A (GB)
Title: Improvements in or relating to data storage
Inventor: BOOTH ANDREW DONALD
IPC: G11C21/02
Filed: 1951-07-10
Abstract: 698,061. Data-storing apparatus recording- apparatus. BRITISH TABULATING MACHINE CO., Ltd. April 15, 1952 [July 10, 1951], No. 16319/51. Classes 106 (i) and 106 (iv). Variable data recorded by coil means as discrete magnetized areas on a member 1 having magnetic remanence are read out by coil means embracing the areas when a sonic impulse is launched in the member by electricimpulse-operated means. In the device shown, 32 binary digits can be stored on a ribbon or wire (which may be wound in a helix) by applying current, of sufficient magnitude to produce magnetic saturation, in opposite directions to represent " 1 " or " 0," to coils 11A-42A. The sonic impulse may be applied by a piezo-electric crystal ; as shown, however, it is applied by sending an electric " read " impulse to a coil 10, the member 1 being magnetostrictive. During its transmission, the sonic impulse produces sinusoidal output impulses, whose phase depends on the digit stored, successively in coils 11B-42B which may be replaced by a single uniformly wound coil and are connected to a transformer 6, the output of which is amplified and clipped in circuit 7 to produce D.C. output pulses of which those (representing " 1 ") corresponding to regular clock pulses are passed through gate 8. The clock pulses may be generated by another device like the one shown. Alternatively, clock pulses and data may be stored in the same device, the coil 10 being placed centrally and the sonic impulse being transmitted towards both ends. A similar arrangement may be used for comparing two sets of data, the output coils being so connected as to produce a signal only when the data disagree. To prevent reflection of the sonic impulse from the end of the member 1, scattering reflecting surfaces 3 and damping pads 4 are provided. As a further precaution, " switchon " and " switch-off coils, before 11B and after 42B respectively, may be connected to an electronic switch controlling the circuit 7, whereby read-out signals are not allowed to pass through the circuit after the sonic impulse reaches the end of the member 1.
Patent GB-1083127-A (GB)
Title: Improvements in or relating to thieno-benzothiapyran derivatives
Inventor: RENZ JANY
IPC: C07D333/34
Filed: 1964-10-05
Abstract: Novel thieno-benzothiapyran derivatives of the formula <FORM:1083127/C2/1> in which R1 signifies a halogen atom, an alkoxy or alkylmercapto radical, each of from 1 to 4 carbon atoms, and R2 signifies an alkyl radical of from 1 to 4 carbon atoms, are prepared by reacting the appropriate 4-oxo-thieno-benzo-thiapyrans with organic magnesium halides of 1-C1-4 alkyl-4-halogeno-piperidines. The 4-oxo-thieno-benzothiapyran may be prepared by reacting an alkali-metal salt of a 2-bromobenzoic acid with an alkali-metal salt of 2-mercapto-thiophene, acidifying, and subjecting the resulting S-(2-thienyl)-thiosalicylic acid to an intramolecular ring closure. 2 - Bromo - 4 - methylmercapto - benzoic acid used as a starting material is prepared by reacting the diazo compound of 2-bromo-4-amino-benzoic acid with potassium ethyl xanthogenate, hydrolysing the product and methylating the 2-bromo-4-mercapto-benzoic acid produced with dimethyl sulphate.
Patent GB-1014563-A (GB)
Title: Improvements in gas pressure regulating valves
IPC: G05D16/06
Filed: 1961-05-06
Abstract: 1,014,563. Valves. RAINSFORD & LYNES Ltd., and R. K. LINES. May 2, 1962 [May 6, 1961], No. 16535/61. Heading F2V. In a gas pressure regulating valve in which a loading spring 15 for the diaphragm 3 abuts an adjustable abutment 12 screwed in and locked by grub screw 16 to a knob 13 screwing into the casing at 14 to adjust the spring loading and gas outlet pressure, continued adjustment of knob 13 to reduce outlet pressure eventually cause a shoulder or abutment 12 to engage an adjustable nut 11 on the diaphragm rod 9 whereby the valve is positively engaged with its seat 7. A ball valve 22 spring-loaded away from a seat on the outlet 23 closes under the rush of gas if the outlet hose is disconnected.
Patent GB-350706-A (GB)
Title: Improvements in or relating to turning, planing and like tools
IPC: B23B27/16
Filed: 1930-05-29
Abstract: 350,706. Tools and tool-holders. ENGLISH STEEL CORPORATION, Ltd. and ARCHER, J., Vickers Works, Sheffield. May 29, 1930, No. 16561. [Class 83 (iii).] In a turning, planing, or like tool of the type in which a cutter 21 is secured in a holder 24 by means of a pin or the like, the locking pressure is exerted against the undercut wall or shoulder 23 of the holder by means of a wedging pin having parts 25, 26 which are eccentric to each other and which engage respectively with holes 28, 29 in the holder and the cutter. The wedging pin is preferably made so that its two eccentric portions have a common generator 30 which, when the part of the cutter below the waist 22 engages the shoulder 23, is located opposite the said shoulder, the cutter being firmly locked by rotating the wedging pin, by means of its head 27 in either direction. The wedging pin may be marked to indicate the position of the common generator of the two eccentric portions. In a modification, Fig. 4, the invention is applied to a cutter having a single cutting point. In a further modification, Figs. 6 and 8, wherein the cutting pressure is transverse to the axis of the wedging pin, the pin is supported against shearing strains by providing the cutter with a wedge-shaped extension which engages within a wedge-shaped recess 32 in the holder so that when the wedging pin is rotated in the direction indicated by the arrow, Fig. 6, the cutter extension is forced along the recess 32 thus relieving the wedging pin of shear stress. In another modification, Fig. 13, the wedging pin may be inserted through a larger hole in the cutter into a smaller hole in the holder, and in this case the common generator 30 is located adjacent the shoulder 23 before the locking pressure is applied. In other modifications the two eccentric parts of the pin have no common generator. The wedging pin may be made in two interengaging parts and in this case the eccentric holes 28, 29 may be of the same diameter. Since only part of the cylindrical surface of the holes and the pin is used in applying the locking pressure the non- effective parts of such surfaces may be of other than cylindrical form. Specification 320,809, [Class 83 (iii), Metals, Cutting], is referred to.
Patent GB-468011-A (GB)
Title: Improvements relating to apparatus for hypodermic injections
IPC: A61M5/28
Filed: 1936-06-13
Abstract: 468,011. Surgical injection apparatus. BONNIN, T. June 13, 1936, No. 16578. [Class 81 (ii)] Surgical injection apparatus comprises a bulb 1 containing injection medium and gas under pressure, and having a sealed nozzle 3 connected by a rubber tube 4 secured by a wire 5 to an injection needle 6, the tube 4 containing a filter 9 for glass fragments. The needle is sealed within a glass tube 7 carrying a metal stylus sealed therein at 8 and passed into the needle to prevent obstruction thereof. In use the tube 7 is removed, the needle 6 inserted and the nozzle 3 then broken to effect injection of the medium by the gas contained in the bulb.
Patent GB-555058-A (GB)
Title: Improvements in or relating to wire drawing machines
IPC: B21C1/04
Filed: 1941-12-23
Abstract: 555,058. Drawing wire. BARRON, C. A., and BARRON, H. D. Dec. 23, 1941, No. 16586. [Class 83 (iv)] Wire drawing machines of the type having two conical drawing drums are provided with means for threading all the dies without removal from the machine and with means for moving the die holders to distribute wear over the drawing seats of the drums. The machine is provided at each side with a barrel a on which a chain b may be wound when the barrel is driven through a clutch e controlled by linkage f from a handle f<SP>2</SP>, these parts also being duplicated. A guide pulley h may be located in a slot i to position trays c opposite any die. The die holder frame j<SP>1</SP> is clamped by screw s to rods k reciprocated by a lever m adjustably connected by a screw m<SP>2</SP> and nut to linkage n, o operated by a cam plate j<SP>1</SP>. A hand wheel r<SP>3</SP> on a screw permits the adjustment of the die holder on the rods when the screws s have been slackened.
Patent GB-334852-A (GB)
Title: Improvements in or relating to high frequency choking coils
IPC: H01F17/00
Filed: 1929-05-29
Abstract: 334,852. Shaw, W. L., and Radio Instruments, Ltd. May 29, 1929. Inductances.-A high frequency choke coil comprises a number of winding sections spaced apart upon a skeleton former, the field due to one or more sections being in opposition to that of the remaining section or sections. The choke may be toroidal, binocular, or truncated conical in form. As shown, the coil sections 15 are coaxially mounted in longitudinal strips 10 secured in end and intermediate discs 12. The end cap 19 and base 17 are provided with flanges 24, 25 within which is located a covering sleeve 23. Reference has been directed by the Comptroller to Specifications 8018/10, 183,938, 217,060, 222,894, 278,812 and 304,622.
Patent GB-244348-A (GB)
Title: Improvements in and relating to rectifiers for wireless reception
IPC: H01L29/00
Filed: 1925-06-29
Abstract: 244,348. Eintracht, S. J., and Dickins, E. J. June 29, 1925. No Patent granted (Sealing fee not paid). Crystal or like detectors.-A rectifier for wireless reception comprises an ebonite &c. base a., Fig. 1, provided with terminals b, c, the terminal b having secured by a binding of thread on its upper end a thin strip of molybdenite &c. d. An insulating tube e, which is screwed over the terminal b, receives at its upper end a contact adjusting screw g which carries a copper &c. filament h and is connected by a wire i to the terminal c. The entire device above the plate a may be embedded in a suitable insulating material and the whole may be enclosed in a cover l. In the modification, Figs. 3 and 5, the strip d of laminated molybdenite &c. is secured in a copper strip m by bending over the ends of the. latter as shown in Fig. 5. One end of the holder m is then clamped between the plate a and a washer n by a nut o on the terminal b, the other end of the holder being clamped between the nut o and a nut p. The filament h in this construction is in the form of a narrow strip of silver which is secured at one end to the terminal c by a. washer g and nut r and has its pointed free end pressed into contact with the molybdenite by means of an adjusting clamp s held between nuts r, t.
Patent GB-912261-A (GB)
Title: Method of forming foundry molds
IPC: B22C17/10
Filed: 1959-05-15
Abstract: 912,261. Moulding-machines. HERMAN PNEUMATIC MACHINE CO. May 15, 1959 [Oct. 16, 1958], No. 16700/59. Class 83 (1). A method of forming foundry moulds comprises compacting material into a flask against a pattern, shifting the mould to a stripping station, raising the mould and flask from the pattern and conveying them away horizontally. The central station of a moulding apparatus comprises a jolt table 2 and a squeezing head 4 as described in Specifications 845,172 and 845,346. At each end of the apparatus is a stripping station having a fixed head 7 carrying posts 8, two of which have projections 9 to position a pattern carrier 38, 39. A vertical cylinder 12 raises arms 14 carrying rollers 15 to engage a completed flask and lift it to the level of rollers 11 for removal. Transverse doubleended pistons at the top of each stripping station carry members 25 having detents to engage a flask and air-spraying pipes 27, 28, to clean a pattern. Fixed means are also provided to spray the pattern. In operation, an empty flask entering from the rear along the rollers 11 trips the detents on the member 25 and is pulled on to the rollers 15, in their raised position, by the member 25 as it advances to move a stripped mould on to the rollers 11 at the front of the apparatus. The cylinder 12 then lowers the flask on to the pattern. The patterns, which may be for a cope and a drag, respectively, have been previously bolted to the carriers 38, 39 moved by a double-acting fluid-pressure piston which has coaxial rods and is mounted on a frame 33. This frame is now raised by fluidpressure means 32 to raise the carriers from their supports and to connect them with the coaxial rods. The empty flask is then moved to the compacting station and passes beneath a hopper 46, filled by an endless conveyer, and beneath a strickling member 48. The rapid movement of the rods is cushioned at the end of the stroke by an air cylinder 49. The frame 33 is lowered and the mould is compacted by jolting and squeezing. Means may be provided for bringing the completed copes and drags into position for casting. Manual, instead of fluidpressure, operation may be employed. Specification 912,262 also is referred to.
Patent GB-286258-A (GB)
Title: Improvements in power driven lift-trucks
IPC: C07D209/60
Filed: 1927-06-23
Abstract: 286,258. Romine, R. T. March 2, 1927, [Convention date]. Hand trucks; wagons and the like.-A load lifting and transporting truck has a low frame, comprising channel shaped sills 10 formed as shown, driving wheels 11, two pairs of double load-supporting wheels 7, 9 and means for raising the platform 24. The wheels 7, 9 are journaled in a sub-frame S which pivots on a transverse bar 23 carried by the frame 10. The platform 24 is pivoted to the frame 10 by two lateral bars 30 and a link frame 25 and is raised by means of a shaft 38 which is drawn up by an electric motor through worm gearing 39, 40 and the toggle action of the bars 35, 36.
Patent GB-622476-A (GB)
Title: Electro-magnetic audible and visible current-circuit tester
IPC: G01R19/145
Filed: 1946-06-04
Abstract: 622,476. Current detectors. GRIMM, A. June 4, 1946, No. 16863. [Class 37] A solenoid 3 has a movable core 5 controlled by springs 6, 7, and co-operating with stops 2a, 2b, so that when energized by A.C. it hums, while clicks are emitted when it is connected to or disconnected from a D.C. source, and it is silent when it is connected to a -broken circuit. A lamp 13 connected across part of the solenoid indicates magnitude of current by its intensity.
Patent GB-1028602-A (GB)
Title: Improvements in and relating to hypersonic speed aircraft
Inventor: WILLCOX FRANK GERRIE
IPC: B64C30/00
Filed: 1963-04-30
Abstract: 1,028,602. Aircraft. BRITISH AIRCRAFT CORPORATION (OPERATING) Ltd. April 23, 1964 [April 30, 1963], No. 16954/63. Heading B7W. A hypersonic all-wing aircraft comprises a triangular forward wing section of a sweep back between 70 degrees and 80 degrees and occupying 64%-80% of the total wing chord Co on the longitudinal centre line, which is joined by a trapezium shaped rear section of a sweep back of 40-60 degrees extending over the remainder of the wing chord.