baber/WOPTO huggingface dataset:
Patent GB-755943-A (GB)
Title: Improvements in electro-magnetic eddy-current brakes
IPC: F16D65/847
Filed: 1953-06-08
Abstract: 755,943. Eddy-current brakes. SILTO SOC. ANON. June 8, 1953 [July 11, 1952], No. 15700/53. Class 35. An electromagnetic eddy current brake for, e.g. a lorry, and of the kind comprising a rotor 1 rigid with a shaft 2 to be braked and axially disposed between two circular sets of stationary electromagnets 5, the electromagnets having their axes parallel with the rotor axis and mounted by their axial outer ends to respective side plate 4 forming the stator frame, is cooled by substantially radial rotor fan blades 6a, 7a which cause air streams to be drawn radially inwardly through two axially uninterrupted annular spaces one at each side of the rotor and in which the electromagnets 5 are disposed, then to change direction at the rotor shaft 2, and finally to flow centrifugally outwardly, through the channels formed by the fan blades, into the external atmosphere. As shown, the rotor comprises two discs 6, 7 having lugs 12, 13 by which they are bolted together and holes 8, 9 for the passage of the cooling air streams. Alternatively to being curvilinear as shown, the blades 6a, 7a may be rectilinear. In other embodiments, not shown, the rotor may comprise a single disc having fan blade forming channels on both sides, and said channels may be closed either by an annular plate or by so shaping the pole-pieces 5a of the electromagnets as to form an annular closure member interrupted only by narrow radial slots. Specification 651,033 is referred to.
Patent GB-1339869-A (GB)
Title: Stiffening insert for articles of clothing and process for the  manufacture thereof
IPC: D06M17/06
Filed: 1972-04-05
Abstract: 1339869 Stiffening textiles STOTZ & CO 5 April 1972 [5 April 1971] 15714/72 Heading D1P [Also in Division A3] A stiffening insert for articles of clothing e.g. shirt collars, which has a variable degree of stiffening over its surface comprises a textile supporting material, which is provided throughout with a substance which has been cross-linked by heating, the degree of crosslinking of which varies over the surface of the insert in accordance with the desired degree of stiffness. The cross-linking is carried out by application of heat using a press or by use of radiation or heated gases. The heating may be carried out in one or more stages with different heating devices if desired. At the same. time as heat is applied the insert may be cooled in places where it is not to be stiffened, the substance left uncross-linked being removed at the first washing. The textile supporting material may be a woven or knitted fabric or a fleece of cellulose, albumen, synthetic plastics materials or glass fibre and may be composed of a number of layers adhesively secured together. Suitable cross linking substances are given as polyamides, vinyl and aryl homo- and co-polymers. Precondensates producible from nitrogen compounds having nitrogen bound amide fashion and mono- or polyfunctional carbonyl compounds may also be employed in particular reaction products of formaldehyde, glyoxal or acrolein with urea or homologues thereof, and also cross-linking agents with aldehyde groups particularly lowmolecular weight aldehydes as such or as derivatives such as acetols, enol ethers or polymers which can cross-link with cellulose. Further compounds which may be employed include di- or polyfunctional cross linking agents containing epoxide, isocyanate, vinyl sulpho groups active organic halogen compounds e.g. halogeno hydrins, dicarboxylic acids, sulphonium or phosphonium compounds or reaction products reactions between ketones and low molecular weight aldehydes. Catalysts may be employed where necessary. Additionally the insert may be provided before, after or during the heat treatment with a thermoplastic polymer dispersion or powder, which under the action of heat reinforces the action of the cross linked substance.
Patent GB-700028-A (GB)
Title: Improvements in or relating to blasting explosives
Inventor: DAVIDSON SAMUEL HENRY
IPC: C06B23/02
Filed: 1951-07-03
Abstract: 700,028. Gelatine and semi-gelatine blasting explosives. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 18, 1952 [July 3, 1951], No. 15736/51. Class 9(2) A gelatine or semi-gelatine blasting explosive containing, say, at least 50 per cent ammonium nitrate includes not more than 5 parts of calcium sulphate (anhydrite) per 100 parts of explosive composition. The composition may also incldue 0.5-5 parts of urea per 100 parts of composition. Preferably 100 parts of composition contain 4 parts of calcium sluphate in the absence of urea or 2 parts of calcium sulphate and 2 parts of urea. Other ingredients are 80/20 nitroglycerine/ethylene glycol dinitrate, nitrocellulose, orthonitrotoluol, woodmeal, chalk and aluminium.
Patent GB-1535810-A (GB)
Title: Multi-contact push button switch
IPC: H01H5/30
Filed: 1976-04-15
Abstract: 1535810 Mechanical switches NORTHERN TELECOM Ltd 15 April 1976 [16 April 1975] 15742/76 Heading H1N In a push-button switch snap-action switch a domed movable contact member 10, Figs. 1, 5, has a central portion 16 connected to a flat sheet portion 11 by radial webs 17 with upwardly bent portions 21 and has spring contacts 12-15 extending radially between the webs 17 which engage fixed contacts 26 when the central portion 16 snaps below the plane of the flat sheet portion 11. The contact member may be engaged by a push-button 36 which is one of a number of buttons integral with a resilient sheet 33 through webs (34), Fig. 6 (not shown), having reduced thickness portions 35 which act as hinges. The button 36 may act through a reduced portion 30 of a flexible web 29. In an alternative embodiment the push-buttons (43), Fig. 12 (not shown), act on the diaphragms through helical compression springs (46). The contact members of the switches on a keyboard are arranged to engage contacts on a common printed circuit board arranged to provide a coded output
Patent GB-457610-A (GB)
Title: Improvements in or relating to sound film recording
IPC: G11B7/00
Filed: 1935-05-31
Abstract: 457,610. Photographic sound recording. ROUND, H. J., Westfield, Muswell Hill, London. May 31, 1935, No. 15926. [Class 40 (ii)] [See also Group XX] Sound is recorded by the variable area method with satisfactory rendering of higher frequencies, on a film which is colour-stained, e.g. yellow or red, in order to localize the exposure in the surface layer, using a light slit which projects on the film a vibrating optical image of length not greater than 0À3 mil. in the direction of travel of the film, and a film-speed not greater than 6" per second. Sensitive film for combined sound and picture records is stained only on the sound track margin. The invention is particularly applicable to multitrack films, e.g. book-record films. Duplicating is effected on similar stock, using a parallel printing beam. The films are developed to gamma unity. Reference is made to recording on very thin emulsions.
Patent GB-205135-A (GB)
Title: Improvements relating to the jointed stretcher bars or tightening members of the hoods or covers of perambulators and baby carriages and the like
IPC: B62B9/14
Filed: 1922-06-09
Abstract: 205,135. Hodgetts, R. June 9, 1922. Pivoting adjustments; disc and like plate hinges. - The joint for the stretcher bars of perambulator &c. hoods is made by cutting two short lengths from an extruded or drawn bar of section comprising a rectangular portion 1 and a circular portion 2 and cutting the circular portions so as to leave flanges 3 adapted to be fitted together so as to pivot abo it a pin 4. The rectangular portions 1 are drilled and tapped to take the stretcher bars 7, and are rounded on the outside. Shoulders 5 limit the opening movement of the bars, and the pin may be fitted with a disc 10 and washer 9 and be riveted over at its ends.
Patent GB-932314-A (GB)
Title: Improvements in or relating to control systems for electrical ovens comprising high frequency heating means
IPC: G05D23/19
Filed: 1961-05-03
Abstract: 932,314. Control systems for high-frequency heating ovens. HUSQVARNA VAPENFABRIKS A.B. May 3, 1961 [May 9, 1960], No. 16095/61. Class 38 (4). The operating period of a high-frequencyheating oven is controlled by a capacitor which is charged through an adjustable resistor to cause an electronic switch to switch off the oven after a predetermined time, by ionisation of an inert gas in the switch thereby operating a relay to break the oven supply. In operation actuation of a switch 43 closes a main switch 32 to supply the following circuit components: the heating means of the cathode 4 of the oven magnetron 2 ; a lamp 26; resistor 24, rectifier 17, operating coil of relay 7 and resistor 20; high resistance 27 to capacitor 10 through push-button switches 15 . . . 240; filter capacitor 18 and a fuse 12. The current is insufficient to operate the relay 7, but the potential of capacitor 10 increases until, after a time equivalent to that required to raise the cathode 4 to its operating temperature, the gas in a tube 9 is ionised to establish a circuit through the operating coils of relays 7 and 8 and a switch 37, thereby actuating the relays and lighting a lamp 25. Upon introduction of an article into the oven 1, a suitable working period is selected by opening one or more of the switches 15 . . . 240 which operation closes the switch 43 to supply the capacitor 10 through the resistor(s) 11 corresponding to the opened switch(es). The working period is commenced by opening switch 37 which recloses upon release, this opening de-energizing the relay 8 to energize a relay 6 through a micro-switch 14 (assuming the oven door 13 to which it is mechanically connected has been shut) and the contact of relay 7 which remains energized through a holding circuit formed by resistors 20, 22. Hence the opening of switch 37 energizes the oven transformer 5 and terminates the discharge of the tube 9, which allows the potential of capacitor 10 to rise at a rate dependent on its capacitance, the resistance of resistor(s) 11 and the voltage from the divider formed by resistances 20, 22. After a time determined by the value of resistor(s) 11, the capacitor 10 ionises the tube 9 to operate the relay 8, de-energize relay 6 and break the supply to transformer 5. The working period is made independent of interruptions caused by opening the oven door (after which the oven has to be restarted by opening the switch 37) by ensuring the current consumption of the lamp 25 and resistor 24 to be such that upon these interruptions the direct voltage from the rectifier 17 is reduced to alter the potential on capacitor 10 only very slowly. If desired, the relay 6 may be a step relay which successively inserts different functions of the oven, e.g. power stages, and also successively interconnects different resistors 11 in the charging circuit of capacitor 10 for controlling a whole working cycle with varying length of time of the individual operations.
Patent GB-690311-A (GB)
Title: Photographic supply tanks for film developing machine
IPC: G03D3/06
Filed: 1951-07-06
Abstract: 690,311. Photographic processing apparatus. DEBRIE, A. V. L. C. July 6, 1951 [Aug. 3, 1950], No. 16133/51. Class 98 (ii). [Also in Group XXIX] A detachable tank for supplying to a film processing machine treating liquid which is not returned to the tank after use, comprises means for filling the tank, means for observing the level of liquid in the tank, means whereby the tank may be slid into and out of the framework of the machine parallel with other similar tanks, a hollow handle by which the tank may be moved, means for retaining the tank in the framework, and mechanical means adapted when the tank is in position to engage with a member of a motor-driven transmission in the machine to be actuated thereby to operate a pump incorporated in the tank, the inlet of the pump being within the liquid in the tank and its outlet being adapted to be connected to the machine by flexible pipes. As shown, a developer supply unit comprises a framework 13 provided with a series of parallel guide channels 12 having bent-over flange portions 11 in which may be slidably engaged the wings 9 of a key member 8 secured to a reservoir tank 1 which is retained in the Fig. 1 position by a spring blade 14 having an aperture passing over a pin 16 on the tank. Each tank has a filler cap 3, a hollow handle 2 including a tubular transparent portion 24 for observing the liquid level in the tank, a pump 6 for drawing developer through an inlet pipe 26 to a discharge pipe 27 and an outlet union 4 to which a flexible pipe 5 is attached when the tank is in use. When the tank is locked in position, the operating arm 7 of the pump is driven by a cam 19 on a power-driven shaft 21. An adjustable needle-valve may be included in the discharge pipe 27 from which between the pump and needle valve a valvecontrolled overflow pipe re-discharges into the tank 1, the pump being adjusted so as to ensure always some overflow. Instead of a camdriven reciprocating pump, a rotary pump driven by gearing from the shaft 21 may be used.
Patent GB-529489-A (GB)
Title: Improvements in or relating to reading desks
IPC: A47B23/04
Filed: 1939-06-02
Abstract: 529,489. Reading-desks. GAVIN, T. J. June 2. 1939, No. 16220. [Class 52 (iii)] A folding reading desk adapted to be supported on the floor comprises arms 1 weighted by a metal cross-bar 2 or otherwise at their lower ends and supported in an inclined position to overhang the seat of a chair &c. by pivoted struts 10 the book &c. support 4 with a shelf 5 being pivoted between the arms at the upper end. The struts may be positioned by stop blocks 12 and the support 4 by a block 7 and turn-button 8, or both may be adjustable by bolts with wing nuts.
Patent GB-639859-A (GB)
Title: Improvements in or relating to mechanism for printing a series of permuted symbols
IPC: G09C1/08
Filed: 1947-06-19
Abstract: 639,859. Printing-apparatus. HOOPER, B. H., and HOOPER'S FOOTBALL FORECASTS, Ltd. June 19, 1947, No. 16228. [Class 100 (ii)] A printing apparatus more particularly for printing successive lines of permuted symbols, e.g. for printing football pool forecasts, comprises a series of coaxial type wheels actuated so that each wheel progresses one step for each complete revolution of the immediate preceding wheel, each type wheel 3 carrying nine circumferentially arranged pairs of laterally spaced type faces 4 whereby at each printing impression of a line of symbols each successive line differs from the preceding line in respect of at least one pair of symbols. As described each wheel carries pairs of type symbols in the following sequence :-1,1; x,x ; x,2 ; x,1 ; 2,x ; 2,2 ; 1,2; 1,x; 2,1. The typewheels are freely mounted on a spindle 16 fixed in a cylinder 1, rotatable about a shaft 13 fixed in the frame, cylinder 1 having an opening 2 through which a line of type is exposed for printing. The cylinder 1 is driven by gearing through a part 15 and thereby causes the rotation of a planet wheel 8 journalled therein by the engagement of the latter with a sungear 7 fast on the shaft 13. The planet wheel 8 drives a discontinuous gear 6 which through a pinion 10 and a gear wheel 5 drives the first type wheel 3. A gear wheel 5 having eighteen continuous teeth is fitted to one side of each type wheel and a discontinuous gear 6 having two teeth only is fitted on the other side. Gear 6 is the driving member and for each complete revolution rotates, by means of its two teeth, a pinion 10 which also meshes with the next succeeding continuous gear wheel 5 which is thereby rotated one-ninth of a revolution. The type wheel 3 to which this latter gear 5 is attached has on its other side a further gear 6 which meshes with a further pinion 10 and so on. Adjacent to each gear 6 and integral therewith is a ring. 9 which forms a locking device to prevent rotation of the pinions 10 whilst the teeth of gear 6 are out of contact therewith. The ring 9 rides in one of a number of hollows 12 formed by making alternate teeth extend only two-thirds of the length of the pinion. The ring is notched at 17 to enable it to ride over the full length teeth of pinion 10.
Patent GB-126893-A (GB)
Title: Flexible Mud-guards for Road Vehicles.
Inventor: CRESSWELL JOHN JAMES
IPC: B62D25/16
Filed: 1918-10-08
Abstract: 126,893. Cresswell, J. J. Oct. 8, 1918. Mud-guards for road vehicles are made of plain or solid india-rubber moulded to shape, or of portions of india-rubber pneumatic-tyre covers. As shown in Fig. 1, a moulded india-rubber guard is strengthened by textile or corded fabric A and by longitudinal wires B - - E. The longitudinal wires may be connected by cross-wires to form a network, and the fabric may be omitted. Or fabric may be attached to the inner or outer face of the india-rubber or to both faces. Side flaps or extensions may be moulded integrally with the guard. A tyre cover used as a guard may be strengthened by longitudinal wires.
Patent GB-669040-A (GB)
Title: Improvements in or relating to thermal regenerators
IPC: F02G1/057
Filed: 1948-06-17
Abstract: 669,040. Thermal regenerators. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 17. 1948 [June 20, 1947], No. 16346/48. Class 64(i) A thermal regenerator, e.g. for a hot gas engine or a refrigerating system, is provided with one or more masses 11 of filling material, having substantially parallel channels 12, of which the hydraulic diameter is not greater than 200 microns, e.g. it may be 50 microns, and the length is at least 25 times the hydraulic diameter. Each mass may be made by embedding woven material in ceramic paste, and heating it to harden the ceramic material and burn out textile fibres in the woven material. The latter may comprise textile fibres extending in one direction and metal wires in another. Alternatively, the mass may be formed by coiling a strip 30, Fig. 3, which may be thermoplastic and is formed, e.g. by rolling when hot, with grooves 31 on one or both sides ; or by coiling a flat strip glued to a corrugated strip. Specification 663,537.
Patent GB-594535-A (GB)
Title: Radio location system
IPC: G01S13/538
Filed: 1944-08-28
Abstract: 594,535. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 28, 1944, No. 16349. Convention date, Aug. 18, 1942. [Class 40 (v)] In a pulse radar system in which the beam scans a sector in azimuth, a record of responses received in the different azimuthal directions is first made and then the scanning is repeated and any response received in the repeated scan which does not correspond in azimuth with one of the previously recorded responses is arranged to stop the scanning and to operate a visual or aural alarm. The scanning is performed by rotating a radiating element about the focus of a parabolic reflector 1 at a speed of 60 r.p.s. or by oscillating the whole assembly at a slower speed with a slow forward scan and a rapid return by means of a suitable cam mechanism. As shown in the Figure, during the recording scans the switch 53 is closed and switch 30 is open so that pulses of constant amplitude and width are produced from the receiver output pulses by means of the pulse shaper comprising the gas discharge valves 12 and 15. The shaped pulses are applied through the recorder 7 to the magnetic tape 6 which is driven by the aerial motor 5 and is of a length equivalent to two scanning cycles. Switch 53 is then opened and switch 30 closed and the recorded signals are picked up by the coil 8 and fed through the amplifier 40 as negative pulses to the grid of the comparator valve 21 which now forms the cathode load of valve 12. The echoes received directly produce positive pulses at the anode of valve 21 which is therefore only made conductive by new echoes which do not correspond to the previously recorded echoes. These new echoes produce positive pulses in the cathode resistance 22 of valve 21 which are fed through an integrating circuit 52 to trigger the gas discharge valve 26 and energize the relay 31. The associated contacts of this relay complete circuits to operate the lamp 50 and the bell 51, to energize the clutch 4 and so disengage the aerial drive, and to disconnect the pick-up coil 8 from the amplifier 40 and connect it to H.T. to erase the magnetic record. The time constant of the integrating circuit 52 is such that a given number of pulses are required to remove the bias from valve 26 in order to prevent operation by random static.
Patent GB-605875-A (GB)
Title: Improvements in and relating to holders for tubular lamps
IPC: H01R33/08
Filed: 1945-06-27
Abstract: 605,875. Lamp-caps and holders. BRITISH THOMSON-HOUSTON CO., Ltd. June 27, 1945, No. 16357. Convention date, June 30, 1944. [Class 38 (i)] In a holder for tubular electric lamps, shown in Fig. 3, a base 11 with a cover 14 contains a space 12, within which slides an insulating contact carrier ring 18 which has a projecting hollow sleeve 19 and is pressed by spring 27 against an internal shoulder 13. The spring engages contact strip 17 and is fixed to the ring by a rivet forming a contact head 30. An insulating disc 26 covers a metal eyelet 23 fixed to the ring by a further rivet forming a second contact head 25. Spring 22 bearing on the eyelet presses the flanged metal sleeve 20 against a shoulder within sleeve 19 and this spring is weaker than spring 27, so is compressed first when the cap of a tubular lamp of the kind described in Specification 605,933 is inserted. The post 5 enters the sleeve 20 which is then engaged by contact fingers 9 connected to a lamp electrode. Spring 22 is compressed until ring 10 completes the electrical circuit by connecting contact heads 25 and 30. Further insertion compresses spring 27 and allows the other end of the lamp to be inserted in a second similar holder aligned with the first. A modified holder, Fig. 4 (not shown), for connecting tubular lamps in series, comprises two contact carrying assemblies as in Fig. 3 carried back to back in a holder and separated by a spring. In a further modification, Fig. 5, receiving a modified lamp cap, a tubular contact sleeve 54 having an inturned edge is fixed within insulating sleeve 53 integral with a sliding disc 49 carrying two contact heads, one being connected to spring 50 engaging terminal 52, and one being connected to the contact sleeve 54 within which slides an insulating disc 55 held by a spring 56 against the inturned edge of the sleeve. Operation is similar to that of the holder shown in Fig. 3.