baber/WOPTO huggingface dataset:
Patent GB-853071-A (GB)
Title: Improvements in or relating to magnetic cores
Inventor: HILTON ROY
IPC: H01F1/26
Filed: 1958-05-16
Abstract: 853,071. Magnetic cores. STANDARD TELEPHONES & CABLES Ltd. May 15, 1959 [May 16, 1958], No. 15802/58. Class 38 (2). The dust core of an inductor is given a substantially zero temperature coefficient of effective permeability at frequencies above half a megacycle by suitable choice of the binder for the magnetic dust. Particles of carbonyl iron smaller than 3 microns diameter are insulated with a layer of oxide and mixed with the copolymer of styrene and α-methylstyrene as binder.
Patent GB-291381-A (GB)
Title: Improvements in electric heating cushions
IPC: A61F7/00
Filed: 1928-05-30
Abstract: 291,381. Bartik, J., and M³nzer, M. May 31, 1927, [Convention date]. Heating and cooling appliances.-A heating resistance 9 is embedded in sand, earth, or the like 5 in a pliable flexible container to form a heating cushion. The container comprises two pieces of cloth 7, 8 joined together. The interior is divided into a number of compartments by walls 12 having gaps at opposite ends alternately to allow the resistance to pass from one compartment to another. The ends of the resistance are connected to a wall plug 11.
Patent GB-905018-A (GB)
Title: Parametric amplifier
Inventor: DUNSMUIR ROBERT
IPC: H03F7/04
Filed: 1959-05-08
Abstract: 905,018. Parametric amplifiers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 2, 1960 [May 8, 1959], No. 15916/59. Class 40 (9). A parametric amplifier is provided with means for attenuating signals at the signal frequency and also at the idling frequency, but not at the pump frequency. In one embodiment the signal frequency and the pump frequency are coupled to one end of a rectangular waveguide, having non-linear capacitive elements such as PN junctions connected across it at regular intervals to effect the coupling between the pump frequency and the signal frequency, the amplified signal being taken from the other end of the waveguide. The arrangement permits the gain to be higher than if the attenuation were operative at all three frequencies without increasing the risk of oscillation due to reflections from mismatches. Fig. 2 illustrates the cross-section of the waveguide 1 through one of the capacitive elements 2. The guide is dimensioned to propagate signal idler and pump frequencies # 1  # 2 , #, where # 2  = 2# 1  and # =3# 1  the voltage waveforms being represented at 6, 7 and 8 respectively. Attenuation may be introduced by a shunt resistance A at a voltage node of the curve 8, or by resistance B in the wall of the guide at a voltage antinode (i.e. a current node) or by an element C of magnetized ferrite material which is frequency sensitive in such a wave as to attenuate frequencies of # 1 , # 2  but not of #. The latter may be magnetized by a D.C. energized coil surrounding the waveguide. In a modification the pumping frequency is provided through a separate waveguide running parallel to the waveguide 1, coupling holes being provided between them.
Patent GB-116456-A (GB)
Title: Improved Variable Speed Gear.
Inventor: MALKIN BERNARD ABBOTT
IPC: F16H3/08
Filed: 1917-11-08
Abstract: 116,456. Malkin, B. A. Nov. 8, 1917. Variable-speed toothed and chain gearing.- Gearing applicable to motor-cycles and light motorvehicles, and providing four forward speeds one of which is a direct drive, comprises three pairs of wheels A, B, C, D, E, F. The wheel A is keyed on the driving-shaft, and the wheel E, which is loose on the driving-shaft, is connected to the driven member P. The wheels C, B, D, F are loose on their shafts, and the wheel C may be connected by clutches K, L to either or both of the wheels A, E, whilst D may be connected by clutches M, N to either or both of the wheels B, F. The direct drive is obtained by clutching C to both A and E and leaving B, D, F free, and the three geared speeds are obtained by variously clutching the wheels together. The clutches may be operated in any suitable manner, friction clutches may be used, sprocket wheels and chains may replace the pairs of spur-wheels, the drives may be transmitted from the wheel E by a universal joint or coupling, and any suitable form of reverse may be employed.
Patent GB-587612-A (GB)
Title: Improvements in or relating to internal combustion turbine power plants
IPC: F02C6/20
Filed: 1944-01-31
Abstract: 587,612. Gas turbines. POWER JETS (RESEARCH. & DEVELOPMENT), Ltd., and HAWTHORNE, W. R. Jan. 31, 1944, No. 16327/45. Divided out of 587,571. [Class 110 (iii)] In a jet-propulsion plant for aircraft, the exhaust from the turbine 28, which drives the compressor 11, passes through contra-rotating turbine bladings 61, 57 before reaching the propulsion jet 37. These bladings are carried by rotors 60, 56 which drive contra-rotating air-screws 65, 66 through a gear-box 62.
Patent GB-238666-A (GB)
Title: Improvement in agricultural cultivator, drag or the like
IPC: A01B63/16
Filed: 1924-07-08
Abstract: 238,666. Wyles, A. July 8, 1924. Implements with adjustable tool frames; adjusting and lifting parts of.-A cultivator, drag. or like implement is provided with two sets of tines or tools one of which makes a complete revolution about an axis while being raised from the soil and lowered again whereas the other only oscillates or rocks about an axis. The tines f, g are carried by shafts b, c mounted in bearings in the frame a, which is mounted on wheels e adjustable simultaneously or independently bv a lever or levers e<1>. Rotation of the shaft b is prevented by a stop pin i engaging one of two shoulders h<1>, h<2> on a detent disc h. When the pin i is moved by means of a lever i<2> the tines f swing back and rotate the shaft b until extra tines or projections j engage the ground and continue the rotation. The movement, continues until the shaft has turned through more than 180‹ and the last extra tine j is clear of the ground. The tines f may be held in the raised position by the engagement of the shoulder h<2> with the pin i, which may be returned automatically to the locking position by a spring i<3>. When the stop is withdrawn again the tines f fall and are drawn into the soil. The stop lever i<2> may be operated by a cord or by hand or foot. In modifications the shaft b may be actuated by the rotation of the ground wheels by means of gearing and a clutch &c. An arm k on the rear tine shaft c is connected bv a rod k<1> to a cranked part, of the shaft b so that the shaft c oscillates when the shaft b rotates. The position of the crank may be such that the backward pressure of the rear tines g acting through the rod k<1> is applied to the detent disc h in such a way as to tend to relieve the pressure on the stop pin i.
Patent GB-318657-A (GB)
Title: Folding bedstead convertible into a chair or armless seat
IPC: A47C17/16
Filed: 1928-06-05
Abstract: 318,657. Brandt, F. E. June 5, 1928. Bedsteads convertible into seats.-In a seat convertible into a bedstead, of the kind comprising hinged frames 1, 6, 7 supported by legs 2, 8, separate side frames 10, unconnected by any transverse members, are detachably secured to the sides of the central frame 1, to form arms and legs and to support the frame 6 when the device is used as a chair. One or both of the frames 10 may be detached, as and when required. The three frames 1, 6 and 7 may be provided with wire meshing 13, that of the frame 1 being further supported by upholstery springs 16.
Patent GB-561119-A (GB)
Title: Improvements in or relating to apparatus for effecting the proportionate addition ofchemicals to liquids flowing through pipe-lines
IPC: C02F1/68
Filed: 1942-11-19
Abstract: 561,119. Mixing. BENSON, C. G., and BELL BROS. (MANCHESTER 1927), Ltd. Nov. 19, 1942, No. 16363. [Class 86] In an apparatus for effecting the proportionate addition of chemicals to liquids flowing through pipe lines, a constant differential pressure is maintained across a restricting orifice or venturi tube in the pipe line with varying rates of flow by means operated by variations in the differential pressure due to variations in the rate of flow to adjust, automatically and correspondingly, the effective area of the restricted orifice or venturi tube to restore the differential pressure to normal, the adjusting means being utilized to control proportionate addition of the chemical to be added to the liquid flowing through the pipe line. The flow in the main pipe is restricted by a plate 10 having an orifice 11 co-operating with a plate 9 connected to a piston 13 in a cylinder 14. Tubes opening into either side of the restriction communicate with ports 26, 27 in a casing for a valve 20 depressed by an adjustable spring 33 and actuated by a piston 22, the upper and lower sides of which are connected by tubes with the main upstream and downstream respectively of the constriction. A port 28 is also connected with the upstream side of the main. Ports 17 and 18 communicate with upper and lower sides, respectively, of the piston 13. In operation, a rise in the differential pressure lifts the piston 22 which raises the valve 20, admitting pressure to the under side of the piston 13 and opening the upper side to exhaust. The plate 9 is thus raised until the normal difference of pressure corresponding to the adjustment of the spring 33 is re-established. Similarly a decrease in the flow in the main causes descent of the plate 9. The movements of a rod 12a connected to the piston 13 are used to vary the amount of chemical supplied to the downstream side of the restriction, e.g. by connecting it with a movable pipe immersed in a tank and so arranged that increase of flow through the main causes increase in head at the intake of the pipe. The movements of the plate 9 may deflect a proportionate width of emulsion or suspension discharging over a constant head weir, or may be arranged to control a pump discharging into the pipe line, or to control the proportionate delivery of reagent in powdered form by operating a slide valve.
Patent GB-352380-A (GB)
Title: Machine and process for making paper boxes
IPC: B31B5/00
Filed: 1930-04-08
Abstract: 352,380. Making boxes. BERGSTEIN, S., 7, South Crescent Avenue, Cincinnati, Ohio, U.S.A. April 8, 1930, No. 16374/31. Convention date, Aug. 5, 1929. Divided on 352,468. [Class 18.] In a machine for forming collapsed boxes from blanks by folding end flaps on diagonal lines on to folded side flaps and securing them together by adhesive, the folding over of the end flaps completed by rotatable members disposed on opposite sides of the axis of movement of the blanks and having frictional peripheries which engage the partly folded end flaps and fold them on the score lines opposite to each other. As shown, the folded side walls of the blanks are carried under guards 46 as described in Specification 352,468 and the front and rear end flaps are successively engaged by fixed folders 47 which turn them to a vertical position for engagement by the rotatable folding members 49 consisting of disc wheels having rubber rings 60 supported in channels in the wheels. The rotatable wheels are driven at a circumferential speed greater than the speed of the blanks and are carried by vertical shafts 58 geared to a motordriven shaft 56. Final folding of the blanks is effected by angularly arranged belts 50 driven from the shafts 58.
Patent GB-1126478-A (GB)
Title: Fire retardant polyolefin composition
IPC: D01F6/04
Filed: 1966-04-14
Abstract: 1,126,478. Polyolefin films and filaments. JOHNSON & JOHNSON. 14 April, 1966 [16 April, 1965], No. 16425/66. Heading B5B. [Also in Division C3] Flame-resistant filaments and films may be prepared from compositions comprising a polyolefin having uniformly dispersed therein 1 to 12% of an organic bromine compound and 0À05 to 20% of a dispersant for said organic bromine compound, based on the weight of the composition, optionally together with 0À1 to 3 weight per cent of pigments and 0-1 to 9 weight per cent of heat and light stabilizers and antioxidants. Filaments may be prepared by extrusion, and films by casting or moulding, particularly by pressing chopped filaments. Specified polyolefins are polyethylene, polybutene-1 and particularly polypropylene. The preferred bromine compound is tris-(2,3-dibromopropyl) phosphate. Specified dispersants are chlorinated polyphenyls, chlorinated naphthalene, stearic acid, chlorendic anhydride and waxes. Examples describe the extrusion of compositions comprising polypropylene, tris- (2,3-dibromopropyl) phosphate together with a dispersant selected from chlorinated polyphenyls, chlorendic anhydride and stearic acid, optionally together with black pigment, p-octylphenyl salicylate, dilauryl thiodipropionate and 2,6 - di - t. - butyl - 4 - methylphenol, through (VI) a 0À045 inch die at 400‹ F. at a rate of 33À5 feet per minute, the resulting filaments being quenched in water and oriented with a draw ratio of 6 : 1 at 300‹ F. under infrared heating; (XII) a 6 inch slit die at 400‹ F., the resulting film being quenched on a watercooled chrome-plated roll; and (XIII) a 0À045 inch die at 400‹ F., the resulting filaments being chopped into half-inch lengths which are pressed between polytetrafluoroethylene coated fibreglass release fabrics between the platens of a press at 370-380‹ F. to produce 8 and 28 mil. films.
Patent GB-907650-A (GB)
Title: Multiple tape recorder
Inventor: FISHER LESLIE CHARLES
IPC: G11B5/004
Filed: 1960-05-10
Abstract: 907,650. Driving magnetic drums. EPSYLON RESEARCH & DEVELOPMENT CO. Ltd. Sept. 23, 1960 [May 10, 1960], No. 16438/60. Class 40 (2). In a magnetic drum recorder carrying short announcements for quick selection, the drum moves axially in response to operation of the selector mechanism. Such a magnetic recorder comprises at least one magnetic drum, 16, 17, 18, 19 (Fig. 1 ), running on a shaft 24, driven by a synchronous motor 28. A lead screw 31 is engaged by a normally disengaged spring-loaded half-nut when an armature 33 is attracted by solenoid 34. When the half-nut is disengaged, spring 35 moves the drums and shaft to the right. The housing 39 contains at least four blocks of heads 40, 52, 53, 54. When the solenoid is energized the lead screw is engaged and the drums move from right to left by engagement of the half-nut and thread, the heads tracing a helical track on the respective drums. In a further embodiment, a drum 74, Fig. 5, is rim driven by wheel 89, Fig. 4, and driving roller 94. The drum moves vertically upwards due to a screw-thread and half-nut. When the drum has risen by a given amount a projection 104 strikes a lever 102 moving it clockwise, and thereby actuating a micro-switch to deenergize the motor and drum, whereby the drum returns to its start position due to disengagement of block 95 and the thread 78.
Patent GB-291966-A (GB)
Title: Improvements relating to devices for use in connection with the fitting of foot-wear
IPC: A43D1/02
Filed: 1927-06-21
Abstract: 291,966. Blurton, A. June 21, 1927. Boots and shoes, measuring for.-A device for measuring on the foot the position in which an arch support should be fitted in a boot, or in which a last should be hollowed out for building up an arch-supporting insole, comprises a base board a having a shaped heel abutment b and an interchangeable arch engaging pad n, which may be of sponge rubber, or the like. The pad n is removably carried by a cross-bar g arranged below the base board and fixed on rods e slidable in guide brackets f by means of handles k. In use, the pad n is adjusted along a slot m in the base board until it properly supports the arch of the foot, and a pad of correct shape is then fitted, its position being indicated on a scale q by a pointer n carried by the cross-bar. The position for the support indicated on the scale may be marked inside a boot or on a last by simple measurement, or by the aid of a gauge s, Fig. 4, shaped to fit inside a boot or on a last and formed with a slot u the edges of which have graduations v corresponding to those on the scale q.
Patent GB-139094-A (GB)
Title: Improved artificial fuel
IPC: C10L5/10
Filed: 1919-07-02
Abstract: 139,094. Lane, L., and Williams, D. H. July 2, 1919. Composition fuel.-A mixture of anthracite duff, inferior steam coal, or other inferior small coal, waste tin-pot grease or waste roll grease obtained from tin-plate, steel, and other works, and a little nitrate of soda is briquetted to form blocks of artificial fuel for domestic use. For industrial use or for use with forced draught, carbonaceous shale and clod may be added to the mixture. A composition for domestic uses consists of 17.8 cwt. of coal, 2.2 cwt. of waste grease, and 16.5 lb. of nitrate of soda; another, for industrial use, consists of 15.5 cwt. of coal, 2.2 cwt. of waste grease, 16.5 lb. of nitrate of soda, and 2.2 cwt. of shale and clod; a third, for use with forced draught, consists of 13.3 cwt. of coal, 2.2 cwt. of waste grease, 16.5 lb. of nitrate of soda, and 4.4 cwt. of shale and clod. In all cases, a small amount of dried clay may be added.
Patent GB-829221-A (GB)
Title: Automatic adjustment mechanism for disc brakes
IPC: F16D65/54
Filed: 1957-05-27
Abstract: 829,221. Disc brakes. GOODYEAR TIRE & RUBBER CO. May 27, 1957 [Nov. 21, 1956], No. 16690/57. Class 103 (1). An automatic brake clearance adjuster for disc brakes having a piston and cylinderoperated friction pad, comprises an adjusting pin held against the friction pad, means for moving the pad towards the disc, a stop collar on the pin to limit retraction of the friction pad and having means to frictionally engage the pin, and means for releasing this grip on excessive brake applying movement of the friction pad. A piston 2, Fig. 1, in cylinder 1 carries on its head 3 a friction pad 4A with the head of an adjusting pin 13 held against the internal face of head 3 by spring washer 16 and retainer 17. An adjusting cylinder 9 screwed into cylinder 1 is closed by a removable head 18 held in place by a threaded ring 20, the head 18 surrounding a sleeve 24 of a compensating grip 22 having a stop collar 23 and a cone-shaped body 26 formed with a recess 29 in its end and being separated into cantilever arms 27, Figs. 2 and 3, by spaces 28, the bore of grip 22 being slightly larger in diameter than pin 13 except for a zone 33 which is slightly less and therefore grips the pin. Fluid under pressure is admitted to space 35 via passage 36 to advance piston 2, carrying pin 13 and grip 22 with it, to apply the brakes, a spring 34, housed in cylinder 9 between its head 11 and the collar 23, being compressed so that on release of the fluid pressure the spring returns the grip 22, pin 13 and piston 2 to the brakerelease position. Excessive movement of piston 2 due to wear of the friction pads 4A causes the recess 29 in grip 22 to engage a cam ring 30, slidable on pin 13 and abutting head 11, to spread the arms 27 and release the grip on pin 13 to allow only the pin to move with the piston, the grip 22 being prevented from moving to the left under the action of spring 34 by fluid pressure in a chamber between collar 23 and head 18, connected to space 35 by passages 37. On release of fluid pressure, spring 34 moves the arms 27 from cam ring 30 to grip pin 13 in a new position to re-establish the brake clearance. If, due to dishing of the disc &c. deformation of the brake parts is present, then on release of fluid pressure the deformations will exert pressure on cylinder 2 to maintain fluid pressure in the space between collar 22 and head 18 to prevent arms 27 moving off cam ring 30, the pin 13 will move freely until the deformation is taken out of the assembly and then spring 34 overcomes the fluid pressure to move arms 27 from the ring 30 to grip the pin 13 to re-establish the brake clearance and prevent brake drag. 0-rings 6, 10, 19, 23A and 25 are used as shown to seal the various components of the brake assembly. To remove worn friction blocks, the threaded ring 20 is screwed into cylinder 9 to move arms 27 on to cam ring 30 releasing pin 13 to permit removal of block 4A, after insertion of a new block the ring 20 is unscrewed to establish the correct brake clearance.
Patent GB-1218287-A (GB)
Title: Cleaning device particularly for cleaning tanks or containers
Inventor: DAWBER DAVID HAROLD
IPC: B05B3/06
Filed: 1968-04-08
Abstract: 1,218,287. Spray producers. D. H. DAWBER. 15 Oct., 1968 '[8 April, 1968], No. 16692/68. Heading B2F. [Also in Division A4] Tank cleaning apparatus comprises at least two spray arms 12, 13 extending from and rotatably adjustable on a body 10 rotatably mounted on a hollow support 11 through which cleaning liquid may be fed to the arms 12, 13 to be discharged on the tank surfaces to be cleaned through outlets 35, 38, 40, at least one of which is so arranged that liquid flow therethrough rotates the body 10 and the arms 12, 13 about the support 11. In the embodiment illustrated the rotation of the body 10 is effected by the liquid flow through the nozzles 38 each of which projects from a member 37 threaded into an arm 12 and secured in a desired angular position by a threaded lock ring 39. Each arm 12 is curved so that its free end extends parallel to the support 11 in either of two opposite directions, a grub screw 21 securing the arm 12 to the body 10 being engaged in either of two diametrically opposed holes 22 in the arm 12. Each arm 13 is connected to the body 10 by a screw 21 received in one of eight holes 22 in the arm 13 and is either straight as shown or curved similarly to arm 12. Further embodiments comprise four arms 13, which are straight and provided with end jets directed to effect rotation of the body 10, or the arms 13 may be cranked for the same purpose. As a further alternative two spray arm assemblies may be coupled together by a rotatable cross tube through which liquid is supplied to the two assemblies.
Patent GB-215218-A (GB)
Title: Improvements relating to the construction of buildings having cavity walls
IPC: E04B1/70
Filed: 1923-06-27
Abstract: 215,218. Bodson, F. June 27, 1923. Ventilating conduits and passages, arrangements of.-The air space 5 of the hollow wall of a building is ventilated and dried by connecting its lower end with an interior conduit 10 having its outlet at a point higher than the inlet 6 at the top of the wall. The connection may be made by means of passages such as 8 in the lower surface of the flooring or by means of the cellar. In addition to the ventilated air space 5, the hollow wall comprises an inner dead-air space 4.