baber/WOPTO huggingface dataset:
Patent GB-570070-A (GB)
Title: Improvements in and relating to the steering of vehicles having endless track belts
IPC: B62D11/10
Filed: 1941-06-03
Abstract: 570,070. Driving and steering endlesstrack vehicles. SELF-CHANGING GEAR CO., Ltd., WILSON, A. G., and MILLER, A. A. June 3, 1941, No. 7027. [Class 79 (ii)] In endless-track vehicles which are steered by driving the two tracks at different rates a transverse shaft a driven from the main gearbox (not shown) drives at each end a gear reduction or step-up unit b, preferably epicyclic, driving the corresponding track, the two gear units being so inter-connected that following a straight course their reactions oppose and cancel each other without any relative rotation of the gear pinions, but when a braking action is applied to either unit the corresponding track receives a reduced drive and the other track an increased drive, thus slowing down one track and speeding up the other. In the construction shown each end of the driving shaft a carries a sun pinion d gearing with a planet pinion g integral with a smaller or larger pinion h gearing with a. sun pinion e on a shaft f driving the corresponding track sprocket (not shown). The planet carrier m is normally free to rotate but can be held by a brake acting on a drum n. The two gear units are inter-connected by auxiliary epicyclic gears and a shaft p, each end of this shaft having a sun pinion o gearing with planet pinions q for which the sun pinions d form the planet carriers, the planet pinions gearing directly or indirectly with toothed annuli t secured to the main planet carriers m. At one side of the vehicle the planet pinions q gear directly with the annulus t, as shown in Fig. 1a ; at the other side of the vehicle the pinions q gear with other pinions q<1> which mesh with the annulus t, as shown in Fig. 2. When the brake drums n are free the shaft a drives the track sprockets at equal speeds, the torque reaction on one planet carrier m being balanced by that on the other, transmitted through the auxiliary epicyclic gears and the shaft p so that none of the planet pinions revolve on their own axes. To steer the vehicle to one side the brake n is applied on that side and the corresponding planet carrier m is held fast, so that the gearing d, g and h, e acts as a reducing gear and the track at that side is driven at a reduced speed. The corresponding relative rotation between the sun-wheel d and the planet carrier m causes, through the auxiliary epicyclic gear, relative rotation of the shaft p and this acts on the other auxiliary gear to drive the other track at an increased speed. In a modification the planet pinion g is smaller than the pinion h and the gear train is a step-up one.
Patent GB-552523-A (GB)
Title: Improvements in or relating to fluorescent screens and cathode ray tubes
IPC: H01J29/18
Filed: 1941-06-04
Abstract: 552,523. Reducing surface reflection. ELECTRICAL RESEARCH PRODUCTS, Inc. June 4, 1941, No. 7069. Convention date, June 12, 1940. [Class 97 (i)] [Also in Group XL] A fluorescent screen consisting of a layer of fluorescent material on a transparent support is provided with a layer of solid transparent plastic between the observer and the screen of such thickness that it substantially prevents halation of the image caused by internal reflection from the surface of the layer nearest the observer. As shown, a layer 16 of a transparent plastic, such as a methacrylate resin, preferably having substantially the same index of refraction as glass, is machined to fit over the screen end of a cathode-ray tube, to which it may be secured by a suitable cement such as Canada balsam. Internal reflection of light rays from the screen 14, instead of occurring at the outer surface 17 of the tube envelope, then occurs at the surface 18 of the layer 16, the reflected light passing owing to the thickness of the layer, to the sides of the layer, which may be coated with light-absorbing material or, if it reaches the screen, being diffused over a large area so that the halation effect is negligible. A light filter or absorbing layer may be arranged between the layer of plastic and the wall of the tube, or on the outer face of the layer of plastic to reduce the intensity of the reflected light more than that of the image. The filter layer may consist of a suspension of light-absorbing particles such as graphite in a liquid or solid medium such as oil or cement. The light-absorbing properties of the filter may vary with direction, for which purpose a film 20 of Canada balsam containing graphite particles may be subjected to an electric field produced between the inner conducting coating 15 of the tube and an electrode 21, so orienting the particles during drying of the film. The plastic layer may itself form a light filter, or a gelatine filter, such as " neutral grey," may be cemented to the top of the plastic block, or moulded on to the end of the tube and cemented between it and the block. The outer face of the plastic block may be concave to make the screen appear flat. Specification 539,428, [Group XL], is referred to.
Patent GB-1457076-A (GB)
Title: Apparatus for feeding a selected one of a plurality of ex truders from a selected one of a plurality of suly containers
IPC: B29C48/09
Filed: 1974-02-15
Abstract: 1457076 Feeding extruders WAVIN BV 15 Feb 1974 [20 Feb 1973] 7097/74 Heading B5A [Also in Division A4] Apparatus for selectively, feeding a number of extruding means 1 from a number of supply containers 2 comprises means 3 connecting each container through a shut-off valve 15 to a respective discharge nozzle 4, and means 7 leading to each extruding means 1 from a respective extruder supply nozzle 21, means being provided for selectively connecting any supply nozzle 21 to a required discharge nozzle 4. The supply nozzles 21 are preferably mounted on a fixed plate 9, the discharge nozzle 4 being on a plate 5 which is displaceable relative to the plate 9 to align the required nozzles, preferably running on wheels 6 along the plate 9, driven by a motor 13 having a wheel 10 engaging a rack 8. For feeding, the plates 5, 9 are urged together by pneumatic means 14 into sealed engagement, overall operation being controlled by a computer 12. Alternatively, the nozzles 4, 21 may be provided in discs, one of which is rotatable, and inlets (22), Fig. 2 (not shown), may be provided for a gas for flushing out residual material from the nozzle 21 after feeding.
Patent GB-609166-A (GB)
Title: A process for removing carbon monoxide from gases containing the same
IPC: C01B3/16
Filed: 1946-03-07
Abstract: Carbon monoxide is removed from gases containing it by catalytic conversion with steam, the catalyst containing copper, magnesium oxide and aluminium oxide and reaction temperature being below 400 DEG  C.  The catalyst may be prepared via the metal hydroxides obtained by co-precipitation of the metal salt solutions by means of alkali hydroxides, followed by reduction with hydrogen.  They may be regenerated by passing air over them without heating.  Substances such as cerium oxide, thorium oxide or alkali compounds which may act as promoters may be present.  If an excessive amount of monoxide is initially present it may first be reduced to below 2 per cent by other known processes.
Patent GB-395089-A (GB)
Title: Improvements relating to joints between relatively moving members adapted to resist plastic metal under pressure
IPC: B21C23/30
Filed: 1932-03-11
Abstract: 395,089. Squirting. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., 11, Holborn Viaduct, London, and DUNSHEATH, P., Hesket, Church Avenue, Sidcup, Kent. March 11, 1932, No. 7278. [Class 83 (iv).] An extrusion chamber of which one wall is formed by at least two relatively moving members, has means to deflect the main flow of the metal from the joint. An extrusion press comprises a rotating, screw-impelling device 8 and a central core member 9 which may be stationary and longitudinally ribbed, or may rotate in the opposite direction to the screw 8. The joint between the screw and the stationary parts of the chamber wall 15, 19 is protected from the flow of the metal by the rounded formation of the forward edge 20 of the screw 8. A similar formation may be used for members between which longitudinal movement occurs instead of a rotary movement, as in the parts of an expansion joint. The protecting surface may comprise a projecting portion 21, Fig. 3, formed by recessing the bush 19 and the screw 8, or the screw 8 only. In a modification of the form, shown in Fig. 2, the joint surfaces 3 may be conical and the surface of the bush 19 may be relieved to reduce friction. The stationary core 9 may be supported by three radial bridge-pieces extending between the inserts 14, 15. The invention is applicable to the joint between a rotary core 9 and a stationary die 10.
Patent GB-661489-A (GB)
Title: Improvements in tuning fork and control systems
IPC: G10G7/02
Filed: 1949-03-17
Abstract: 661,489. Tuning forks. DEHN, S. G. (Times Facsimile Corporation). March 17, 1949. No. 7340/49. Class 88 (ii). [Also in Group XL (b)] In a frequency control device, the greater part of the length of a tuned vibratory member is sealed within a hermetically closed housing, the part of the member external to the housing having means for adjusting the vibratory frequency of the member. The tines 2, 3 of a tuning fork are enclosed in an evacuated or gas-filled housing 4, the frequency of the fork being adjustable by screwed weights 13, 14. An electromagnet 6, vibrating at about the frequency of the fork, excites the fork which controls exactly the frequency in a pick-up 7. In Fig. 5, the frequency is adjusted by a force applied to rearward extensions of the tines by opposed threads of a screw 17. In Fig. 7, the fork is enclosed in a stainless steel tube 21, the lower walls of which are reduced in thickness. The exciting and pick-up transducers 22, 23 are adjustable vertically and horizontally.
Patent GB-553855-A (GB)
Title: Improvements in or relating to heat control for arc welding
IPC: B23K9/10
Filed: 1942-06-01
Abstract: 553,855. Control systems for welding arcs ; electric resistances. WILSON WELDER & METALS CO., Inc. June 1, 1942, No. 7384. Convention date, Sept. 24, 1941. [Class 38 (iv)] [Also in Group XXXVI] To prevent crater formation at the end of a weld the excitation of an arc welding generator is reduced at a predetermined rate until the arc is extinguished. A metal housing 22 is mounted upon an integral shaft 24 in a portable frame (not shown). The housing is divided into two portions 35, 36 in one of which a resistance element 43 wound upon an insulating support is secured. The resistance is connected at one end to the wall of the housing and is short-circuited in the position shown by liquid 48 such as mercury. A chain passes over a sprocket on the shaft and is secured at one end to the portable frame by a spring and at the other to a pedal working in a slot in the frame and defining the positions it may occupy. When the pedal is depressed to conclude a weld the housing is inverted and the liquid escapes through an adjustable needle valve 39 to introduce the resistance into the field circuit of the generator at a rate which will permit the molten metal in the interior of the weld to solidify before that on the exterior.
Patent GB-985554-A (GB)
Title: Disc brake
Inventor: HARRISON ANTHONY WILLIAM
IPC: F16D55/224
Filed: 1961-05-01
Abstract: 985,554. Disc brakes. GIRLING Ltd. Aug. 1, 1962 [May 1, 1961], No. 7423/61, Heading F2E. A disc brake in which friction pads 10, 11 for engagement with opposite faces of a rotable disc 12 are carried by a pair of complementary levers 13, 14 which are mounted at one end on pivot pins 15 for angular movement on a stationary member 16 lying outside the periphery of the disc and at the other end are engaged by a floating caliper or clamping member 23 for drawing the ends of the levers together to urge the friction pads into engagement with the disc, the points of engagement of the caliper with the levers lying between the friction pads and the peripheral edge of the disc. The floating clamping member 23 has a central part lying outside the periphery of the disc and which has at opposite ends lugs extending inwardly on opposite sides of the disc, one lug housing an hydraulic cylinder in which works a piston acting on one lever 14 and the other lug (29) housing an adjustable member acting on the other lever 13. The pivot pins 15 are loaded by a U-shaped blade spring 17 secured to the bracket 16 in order to retain the pins in the levers and to prevent rattle. The friction pads are bonded to backing plates 18 which are received between abutments in the inner faces of the levers and are held against the levers by spring clips 19 which are secured to the levers by bolts 20. The bolts 20 also serve as anchorages for the ends of a wire spring 22 which urges the levers apart in the off position of the brake. Mechanical means for applying the brake from a hand lever comprises a secondary lever 31 pivoted on one of the complementary levers 14 and bearing at one end on the floating actuator 23, the other end of the secondary lever 31 being acted on through a cam 36 by a push rod member 34 coupled to the hand lever.
Patent GB-464228-A (GB)
Title: Improvements connected with pans for fish or chip frying, heating liquids or melting solids
IPC: A47J37/12
Filed: 1936-03-12
Abstract: 464,228. Cooking in fat and oil. PRESTON & THOMAS, Ltd., and PRESTON, J. H. March 12,1936, No. 7441. [Class 28 (i)] [Also in Groups XIII and XI] A pan 4 for fish and chip frying or for liquid heating or solid melting purposes is surrounded by an external chamber 6 around which the products of combustion are adapted to circulate by way of entrance'and egress openings 7, 8, the chamber being surmounted by a second chamber 9 adapted to supply hot air heated from the underlying chamber, for instance to cooked fish &c. in containers supported on racks disposed above the pan. Air enters the chamber 9 through an opening 12 and hot air passes out through a pipe 13.
Patent GB-557818-A (GB)
Title: Improved means for supporting and teaching the correct use of files and like tools
IPC: B23D67/00
Filed: 1942-06-03
Abstract: 557,818. Filing-guides. NIXON, A. W. June 3, 1942, No. 7525. [Class 83 (iii)] A device for filing a plane surface on work J, or teaching the use of a file, comprises a base A mounted on a bench E and carrying a pair of standards B enclosing supports C terminating in cross heads D connected by parallel guide-bars D<SP>1</SP> on which the file-holder is guided. The latter comprises sleeves G<SP>1</SP> and arms G to which opposite ends of the file H are secured. The file is normally raised clear of the work, which may be gripped in a vice F by springs C<SP>1</SP> under the cross-heads.
Patent GB-607670-A (GB)
Title: Improvements in push button control devices
IPC: G05G5/08
Filed: 1946-03-11
Abstract: 607,670. Locking rods. DOWTY EQUIPMENT, Ltd., and SNELL, M. S. March 11, 1946, No. 7587. [Class 80 (iii)] [Also in Group XXXVII] A number of push-buttons 7a ... 7d have rollers 8 which engage slidable stop-members 9a ... 9c so that only one button can be depressed at a time, a depressed button being raised to its normal out position by the depression of any other button. The members 9a ... 9c may have humps, Fig. 3 (not shown), to give a snap-action. The buttons may operate fluid valves, an electric switch (see Group XXXVII) and stop a drum or other rotating member at predetermined points.
Patent GB-1501051-A (GB)
Title: Method for preserving functional fluids and liquid hydrocarbon fuels
IPC: C10L1/22
Filed: 1976-02-26
Abstract: 1501051 Microbicides OLIN CORP 26 Feb 1976 [27 Feb 1975] 7659/76 Heading ASE [Also in Division C5] 5 - methyl - 1, 10 - phenanthroline is used as a biocide in organic functional fluids and liquid hydrocarbon fuels in minor amounts, such as 100 - 1500 p.p.m.
Patent GB-350528-A (GB)
Title: Improvements in or relating to medallions, draughts, or other playing pieces
IPC: A44C15/00
Filed: 1930-03-10
Abstract: 350,528. Medallions; draughts &c. GAUNT, C. F., Warstone Parade Works, Birmingham. March 10, 1930, No. 7696. [Classes 73 and 132 (ii).] Medallions, and draughts or other playing pieces are made by printing with ink upon a piece of metal of from À012 to .036 inch in thickness and subsequently beading or otherwise strengthening the edge. In the form shown in Fig. 3, the beading 2 secures a covering 3 of thin paper or metal; a glass cover may be secured, as shown in Fig. 4. The edge 4 may be corrugated, as shown in Fig. 5, or provided with pressed-out portions of spherical form.
Patent GB-637281-A (GB)
Title: Improvements in steam generators
IPC: F22B9/14
Filed: 1948-03-13
Abstract: 637,281. Return-tube steam boilers. ADAMSON & CO., Ltd., J., and KERFOOT, G. March 13, 1948, No. 7703. [Class 123(ii)] In a horizontal cylindrical dryback boiler of the double return-tube type, the combustion chamber e is. directly attached to the back end plate c of the boiler in such a manner that part of it is located within the boiler shell a, the outwardly-extending part thereof being composed of or lined with heat insulating material as shown. The tubes f of the first pass are jointed to the front of the combustion chamber, which latter may be of cylindrical, hemispherical, &c., shape.
Patent GB-287094-A (GB)
Title: Improvements in and relating to the centrifuging of wax
IPC: C11B11/00
Filed: 1928-03-13
Abstract: 287,094. Boesch, C. March 14, 1927, [Convention date]. Strainer separators; driving; heating. - A centrifugal machine for recovering wax from honey-combs has a perforated drum 7 with a lining 12 consisting of a fine-meshed sieve; the drum has a series of turbine blades 9 on its base and is supported on a shaft 6 inside a fixed casing 3. The combs are first heated in a water bath and opened up, and then placed in the drum 7. Steam is supplied by the pipe 10 to the nozzle 11 and causes the turbine and drum to rotate. The exhaust steam heats the drum and keeps the wax fluid. The steam and fluids pass through the drum and are removed from the casing 3 by the pipe 16. The steam passes into a further outlet pipe 18 while the wax and water drop into the pail 17. The dross remains in the drum. A ring 14 of angular cross-section is fastened over the pins 13 by a bayonet joint and prevents the fluid wax from rising out of the drum while the machine is working.
Patent GB-558662-A (GB)
Title: Improvements in ball bearing devices
IPC: F16C23/06
Filed: 1942-06-08
Abstract: 558,662. Bearings. PHILLIPS & POWIS AIRCRAFT, Ltd., and PETER, C. R. June 8, 1942, No. 7805. [Class 12 (i)] A bearing consists of two opposed housings 5, 7 each carrying a ring of balls 12, 13 engaging a central single ball 14, at least one of the housings being adjustable. One housing may be formed by the end of the rotor shaft. The bearing may be applied to gyroscopes for automatic pilots.
Patent GB-1496938-A (GB)
Title: Electronic timepiece with calendar mechanism
IPC: G04B19/253
Filed: 1975-02-25
Abstract: 1496938 Control of stepping motors CITIZEN WATCH CO Ltd 25 Feb 1975 [5 March 1974] 7806/75 Heading H2J [Also in Division G3] In an electronic timepiece, see Division G3, having a time display and a calendar mechanism both driven from an electrical source such as a cell (2, Fig. 2, not shown), the drive includes a member which deforms when the load thereon exceeds a preset value and effects a switching operation, thereby increasing the electric power fed to the drive. The extra, intermittent load imposed by the calendar mechanism is thus economically catered for. Fig. 5 shows an arrangement in which a stepping motor stator coil 5b is pulsed either directly from a source 26 or via a voltage doubling circuit 30. The switching operation produces a signal at terminal 25 to disable transistor 24 and enable transistor 23, doubling the voltage of the applied pulses. An alternative arrangement in Fig. 6 increases the width of pulses fed from output terminals 51, 52 in response to a switching signal at terminal 50. Elements 53-56 are stages in the timepiece frequency divider chain and the circuit is gated by 1 Hz pulses on line C and either 32 Hz pulses on line A to produce short output pulses, or 16 Hz pulses on line B to give output pulses of twice the duration.
Patent GB-579029-A (GB)
Title: Improvements in and relating to tongues for cigarette making machines
IPC: A24C5/18
Filed: 1945-03-28
Abstract: 579,029. Making machine details. AMERICAN MACHINE & FOUNDRY CO. March 28, 1945, No. 7861. Convention date, May 12, 1944. [Class 83 (ii)] [Also in Group VI] To prevent choking in the rod former of a continuous-rod cigarettemaking machine, the tapered inner surface of the tobacco-compressing tongue 20 is roughened, pitted or indented. The roughenings &c. extend wholly or partly transverse to the tongue surface and may simulate diamond or straight knurling 22, and they may be provided only for a short distance from the smaller end of the tongue or may be increased at this end. The tongue may be formed from a flat tapering blank which is bent into channel form. To avoid tearing the edges of the cigarette paper, the longitudinal edges of the blank may be free of indentations. The roughening may be produced by engraving, etching, stamping, rolling or by blasting with small objects such as sand, shot, &c. or by projecting molten metal against the inner surface of the tongue or by securing abrasive particles to the tongue. As shown in Figs. 7, 9, the tongue 10 is soldered or brazed to a rib 17 arranged between guide plates 113 carried by an insert 111 adjustable longitudinally in a base member 112. The rib 17 has three lugs 18 carrying screws 19 which engage stop surfaces 120 and are adjusted laterally by screws 122, 123 and the rib is carried by a pivoted arm 125 and normally maintained above the insert 111 by a screw 124.
Patent GB-1380997-A (GB)
Title: Building of pneumatic tyres
IPC: B29D30/24
Filed: 1972-02-21
Abstract: 1380997 Making pneumatic tyres SEMPERIT AG 21 Feb 1972 [22 Feb 1971] 7866/72 Heading B7C A method of building a pneumatic tyre, e.g. a radial-ply tyre, comprises the steps of making a cylindrical partial tyre assembly 8, including the tyre carcass and bead cores, by the flat band method on a building drum 2 having a building surface 7 capable of assuming a cylindrical form for this purpose, then, using the same drum, simultaneously moving the bead cores toward one another and supplying pressurized liquid or gas into the drum interior to pass through apertures 23 in the surface 7 and act directly on the assembly 8 to shape the assembly 8 from cylindrical to toroidal form, and finally applying the remainder of the tyre components to the toroidal assembly 8. The building drum 2 comprises discs 3 and 4 at its ends mounted on shafts 5 and 6, respectively, so as to be movable axially with respect to one another, and a flexible element or elements interconnecting the peripheries of the discs 3, 4, to form the tyre building surface 7, such that, in use, when the discs are moved away from one another the surface 7 assumes a cylindrical form, and when the discs are moved toward one another to move the bead cores of the assembly 8 together the surface 7 collapses at its centre toward the drum axis. The building surface 7 may be formed by a sleeve made of flexible, e.g. elastomeric, material which may have a rigid reinforcing insert or inserts, the sleeve either having more apertures at its centre than at its ends, or being made of thicker material at its ends than at its centre, in order to facilitate the above-mentioned collapse (Figs. 4-7, not shown). Alternatively the building surface 7 may be made of non-elastic yarns extending axially of the drum and elastic yarns extending circumferentially of the drum (Fig. 9, not shown), the latter facilitating the collapse of the surface. In addition, tension springs or rubber bands contacting the inside of the surface 7 may be provided to facilitate its collapse, and a layer may be provided on the outside of the surface 7 to prevent the adhesion of tyre components to the surface. In a further embodiment (Fig. 10, not shown), a plurality of axially extending chains form the surface 7. The axial length of the surface 7 may be adjustable when it is formed of yarns or chains.