baber/WOPTO huggingface dataset:
Patent GB-1503410-A (GB)
Title: Copy system driving mechanism particularly for machine tool slides and powered servo systems
IPC: F16H3/72
Filed: 1976-07-30
Abstract: 1503410 Variable speed gear; screw and nut gearing ARMYTAGE BROS (KNOTTING- LEY) Ltd 30 July 1976 31783/76 Headings F2D and F2Q [Also in Divisions B3 and G3] A variable ratio drive for a copy-controlled machine tool slide comprises two electric or hydraulic motors 4, 6, driving respective input members 36 of a planetary or screw-and-nut differential gear, the output member 24 of which can thereby be driven at speeds varying from zero to a maximum in both directions by varying the relative speeds of the motors, the stationary output condition being produced when both motors rotate at equal speeds, thereby avoiding static friction on starting. The motors may themselves be variable speed motors or may drive through variable speed gears. In Fig. 2 the relative speeds of the hydraulic motors 4, 6 are controlled by a valve 48 controlling the exhaust from the motors in accordance with a template-controlled stylus 52, the valve body being mounted on a tool slide 44, traversed by a screw 40 driven by the differential output shaft 24, Fig. 1.
Patent GB-1101000-A (GB)
Title: Improvements in refractory mold composition
IPC: B22C1/20
Filed: 1966-07-15
Abstract: A refractory mould composition comprises a homogeneous slurry of a refractory aggregate, 15-50% by weight of an aqueous binder containing at least one methyl trialkoxy silane having from 4 to 10 carbon atoms and a hydrolysing agent for the organosilane, and from 0.001 to 0.5% by weight of the composition of a gelling agent for the organosilane wherein not more than 70% by weight of the aggregate has a particle size larger than 100 mesh (Tyler) and at least 20% has a particle size smaller than 200 mesh.  Preferably the aqueous binder comprises initially 30-60% by weight of methyl trimethoxy silane, methyl triethoxy silane, methyl triisopropoxy silane or a mixture thereof, which should be completely hydrolysed prior to the admixture of refractory aggregate and gelling agent therewith.  The hydrolysing agent may be a mineral acid such as HCl, H2SO4, HNO3, H3PO4 and HF present in amount no more than 0.1% by weight of the aqueous binder. The gelling agent may be an amine or a metal oxide or salt, many examples of which are given.  The aqueous binder may also contain up to 30% by weight of tetraethylorthosilicate provided at least 40% is water.  The refractory aggregate may be a mixture of conventional refractory substances such as silica, ground glass, zirconium silicate, calcined kyanite, fireclay grog and banding sand.
Patent GB-247502-A (GB)
Title: Improvements in lawn tennis and like racquets
IPC: A63B49/08
Filed: 1925-12-17
Abstract: 247,502. Prosser & Sons, Ltd., T. H., and Prosser, F. A. Dec. 17, 1925. Rackets. - The neck of a lawn-tennis or other racket handle is provided with a binding of fabric tape d covering the tips of the face pieces c. The tape is glazed over by the usual polish or varnish applied to the racket.
Patent GB-1477367-A (GB)
Title: Process and apparatus for developing electrostatic images
IPC: G03G15/08
Filed: 1974-07-18
Abstract: 1477367 Developing apparatus HOECHST AG 18 July 1974 [21 July 1973] 31895/74 Heading G2H Powder developer cascading on to latent-imaged photo-conductive drum 1 passes through multiple plate development electrode 12, and is divided by it into streams which contact the drum in succession at different locations. Preferably the electrode consists of parallel metal sheets with portions at their ends parallel to the drum surface. The sheets are electrically conductive, and are subjected to a common voltage.
Patent GB-765778-A (GB)
Title: Improvements in or relating to adjustable wrenches
IPC: B25B7/12
Filed: 1954-11-05
Abstract: 765,778. Pliers, wrenches. TUGEND, H. Nov. 5, 1954 [Nov. 11. 1953], No. 32098/54. Class 61 In a toggle operated adjustable wrench comprising a pair of jaws a, b pivoted at t, the jaw a being integral with the handle lever e, and the handle lever c being pivoted at d to the jaw b, a toggle lever f is pivoted at w to the handle c so as to form with the arm g of the handle c a pair of toggle levers, the other end of the lever f being pivotally mounted in a support block L longitudinally slidable in the handle e by means of an adjusting screw and nut, cranked catch lever u is provided for initiating the release of the toggle pair. The catch lever u is pivoted between the cheeks of the handle c, one end being exposed and directed towards the jaw end of the wrench to provide a thumb plate. The support block l is formed by the hooked end of the adjusting srew m which is housed between the web and cheeks of the U-section handle member e the adjusting nut n being mounted between the edges o of a cut-out in the handle., The block l carries a datum line which in conjuction with a scale provided on the handle e indicates the spacing between the jaws. A spring s. holds the ball end of the lever f in the socket bearing in the block l.
Patent GB-753826-A (GB)
Title: Improvements in travelling band air filters
IPC: B01D46/18
Filed: 1954-11-05
Abstract: 753,826. Air filters. AIR-MAZE CORPORATION. Nov. 5, 1954 [Nov. 12, 1953], No. 32106/54. Class 8(2). An endless travelling band of filter cells 27, Fig. 1, guided over pairs of upper and lower sprockets 21, 20 so as to provide two vertical runs dips into a reservoir 17 at the base of casing 11, 13, 14, 15 and is rotated intermittently in jerky steps so as to facilitate removal of dir from the cells as they traverse the reservoir 17. Opposite sides of the upper end of each cell 27 are pivoted to the links of a chain 25 driven by the sprocket 20 and shaft 19 thereof and are grooved at 35 so as to nest with a corresponding projection of the cell above. Distortion by incoming air is prevented by a guide 31 having an apex which with a leaf spring 33 guides the cells as they approach the sprocket 21. The shaft 19 is driven step by step by an overrunning clutch of conventional construction keyed thereto and connected by a lever arm 37 to a solenoid 40 biased by a spring 44 to the free position and energised at predetermined times by a time switch. In a modification the shaft 19 is indexed by a solenoid operated pawl and ratchet and in a further modification the sprocket 20 is connected by a conventional clutch and by an arm 63, Fig. 6, to the rod 59 of a piston 56 subjected to a burst of compressed air from a compressor 57 when a valve 61 is turned to the position shown by a solenoid 62 energised by a timer 60 and switch 60a.
Patent GB-363764-A (GB)
Title: Improvements in or relating to power units employing internal combustion engines for rail locomotives
IPC: F02B75/04
Filed: 1930-10-25
Abstract: 363,764. Driving-gear. CHORLTON, A. E. L., 55, Lower Belgrave Street, Eaton Square, London. Oct. 25, 1930, No. 32118. [Class 7 (ii).] A power unit for rail locomotives comprises an internal-combustion engine, preferably of the liquid fuel injection compression-ignition type, having two crank shafts with power transmitting means located between the two cranks and two groups of inclined cylinders disposed so that each crank throw is actuated by the pistons in the cylinders of one group. In the engine shown in the figure each group contains three cylinders. A gear wheel L drives the track wheels of a locomotive through a gear wheel L<1> forming part of a variable speed gear L<2>, a shaft L<3> and cranks L<4>. The crank shaft H<2> is carried in bearings H<1> mounted eccentrically in bosses H in a crank case C. The crank shafts H<2> may be moved bodily relative to the cylinders to vary the compression ratio by rotating the bosses H by a hand-wheel (not shown) which operates through gear wheels K<4>, K3, K, H4. This movement permits the piston J to cover or uncover supercharging ports D<3> at the ends of the suction strokes. The degree of supercharge is such that whether the engine is operating with the higher compression ratio and no supercharge or with the lower compression ratio and a supercharge the maximum pressure in each cylinder is constant. In a modified construction in which roller bearings are used both for the crank shaft and between the crank pins and the connecting-rods, the crank pins are formed on circular webs located at the ends of the crank shafts. The mechanism for rotating the bosses H may also control the quantity of fuel injected by the fuel pumps. The variable speed gear is described in Specification 359,552, [Group XXIV.]
Patent GB-1150492-A (GB)
Title: Indurating Ore Fines Pellets
IPC: C22B4/00
Filed: 1966-07-18
Abstract: 1,150,492. Indurating ore pellets. MIDLAND ROSS CORP. 18 July, 1966 [16 Aug., 1965], No. 32175/66. Heading C1A. Indurated pellets are produced from initially moist "green" balls of ore concentrate which contains an oxidizable fuel by consecutively (i) drying the balls by heating, (ii) pre-indurating the resulting pellets in a separate zone at 1000-2000 F. while preserving some of the oxidizable fuel, and (iii) indurating the pellets while they descend under gravity by passing an oxidizing gas therethrough to oxidize the remaining fuel in the pellets and raise the temperature thereof to at least 2200 F. substantially wholly through oxidation of said remaining fuel. When the ore concentrate consists substantially of magnetite, the magnetite itself comprises the oxidizable fuel, but when the concentrate contains haematite a carbonaceous fuel (e.g. coal) is added thereto prior to balling-up. The internal fuel value of the pellets required for the final induration (iii) can be set during the preinduration step (ii) by performing the heating thereof in an oxidizing, neutral, or reducing atmosphere. In the illustrated embodiment, a stream of green balls 1a passes through (i) a conveyer-type updraft-downdraft furnace 2, (ii) a rotary hearth furnace 3 and (iii) shaft furnace 4. A stream of initially unheated air 10a is introduced into the shaft furnace through inlet 5, passes upwards through the descending column of pellets, and then passes as streams 10b and/or 10b<SP>1</SP> to furnaces 3 and/or 2.
Patent GB-1093092-A (GB)
Title: Sun visor
IPC: B60J3/02
Filed: 1965-07-28
Abstract: 1,093,092. Sun visors. GEBR. HAPPICH G.m.b.H. July 28, 1965 [Aug. 7, 1965], No. 32237/65. Heading B7J. A sun visor frame and reinforcing strut assembly comprises a flexible steel wire or plastics frame 2 and a flexible steel wire or plastics strut 10 spot-welded at its ends (13), (15), Fig. 1 (not shown) to the frame 2. A twopiece clamp 16 embraces the end (15) of the strut 10 welded to the spaced ends of the frame 2, and accommodates a swivel pin 17. The visor is also pivoted on a swivel pin 9 mounted in a two-piece friction clamp 8.
Patent GB-617741-A (GB)
Title: Improved diamond-set tool and method of manufacturing same
IPC: C22C19/07
Filed: 1946-10-30
Abstract: To produce a diamond-set grinding disc, boring head, or like tool, or a cutting edge therefor, diamond grains or powder are embedded in a metallic mass comprising 30-60 per cent cobalt, 8-28 per cent tin, and the remainder copper, and the mass is then compressed and sintered.  The diamond powder may be mixed with all three metallic powders, a pulverized alloy of all three metals, a mixture of two pulverized alloys each of two of the metals, or one metal powder and a pulverized alloy of the other two metals.  Each metal may contain normal impurities, the compression may be carried out in the hot or cold state, or the sintering operation may be effected simultaneously with, or subsequent to, the compression.  As examples, a pressure of two tons per square cm. may be applied at a temperature of 700 DEG -750 DEG C., or half a ton per square cm. at 775 DEG -800 DEG C.ALSO:To produce a diamond set grinding disc, boring head, or like tool, or a cutting edge therefor, diamond grains or powder are embedded in a metallic mass comprising 30-60 per cent cobalt, 8-28 per cent tin, and the remainder copper, and the mass is then compressed and sintered.  The diamond powder may be mixed with all three metallic powders, a pulverized alloy of all three metals, a mixture of two pulverized alloys each of two of the metals, or one metal powder and a pulverized alloy of the other two metals.  Each metal may contain normal impurities, the compression may be carried out in the hot or cold state, or the sintering operation may be effected simultaneously with, or subsequent to, the compression.  As examples, a pressure of two tons per square cm. may be applied at a temperature of 700-750 DEG C, or half a ton per square cm. at 775-800 DEG C.
Patent GB-837571-A (GB)
Title: Sealing and supporting devices for rotatable members
Inventor: CHAMBERLIN REGINALD HENRY DOUG
IPC: F16J15/34
Filed: 1957-10-15
Abstract: 837,571. Axial-flow compressors; stuffing- box substitutes. NAPIER & SON Ltd., D. Jan. 14, 1959 [Oct. 15, 1957], No. 32262/57, Classes 110 (1) and 122 (5). A sealing and supporting arrangement for the rotor 10 of an axial-flow compressor comprises a dynamic seal and bearing assembly removable from the compressor casing 14 and from the rotor, and a seating 23 on the rotor which is normally spaced axially from a corresponding seating 20 on the casing, the rotor being movable axially to bring the seatings 20, 23 into contact for supporting and sealing the rotor against the casing on removal of the assembly for inspection and/or replacement of worn parts. The rotor stub shaft 11 is secured to a hollow sleeve 27 by means of a tensioning tube 29, threaded plug 31, collet 35, spring washer 34 and nut 33. A bearing sleeve 37 and a driving flange 38 are fixed to the inner and outer ends respectively of the sleeve 37 which is mounted in bearings 40 and 41 respectively fitted in supporting rings 42 and 43 mounted in a flanged sleeve 44 removably secured to the casing 14. A thrust ring 49 and the supporting ring 42 form a thrust bearing for a flange 51 on the sleeve 37. A dynamic seal assembly 56 prevent leakages of gas from the space 24 during normal operation of the compressor and comprises a carbon ring 57 which is supported in a bushing ring 58, connected by inner and outer bellows 59, 64 to the sleeve 44, and separated from a steel ring 60 on the sleeve 27 by a slight gap maintained by compressed-air supplied to a channel 61 through the inner bellows and passages (not shown) in sleeve 44. Compressed-air flowing radially outwards from channel 61 and gas leaking inwards from space 24 pass through a channel 62 to drain and air flowing radially inwards through the gap escapes through recesses 54, axial passages 52, bore 39, passage 30 and port 70 to atmosphere. Oil is supplied to the bearings at 74 and leakage is prevented by seals 71 and 72. To remove the seal and bearing assembly, the connection between the sleeve 44 and casing 14 is progressively slackened and the pressure differential on the sleeve 44 moves it and the rotor to the left until a projection 19 engages projection 21 on the rotor and finally seatings 20 and 23 sealingly engage. The sleeve 27 may then be disconnected from the stub shaft 11 and the assembly removed, the rotor being supported by the projection 19. Specification 830,059 is referred to.
Patent GB-505453-A (GB)
Title: Improved cathode ray scanning method for television and like purposes
IPC: H04N5/228
Filed: 1937-11-23
Abstract: 505,453. Cathode-ray tubes. WEISS, G. Nov. 23, 1937, No. 32270. Convention date, Nov. 24, 1936. [Class 39 (i)] In a method of scanning a light-sensitive mosaic electrode, the ray is suppressed and during the time of suppression the potential of the anode is increased to collect the photoelectrons and secondary electrons. The time during which the ray is suppressed may be one half of the scanning period and the frequency of suppression may be equal to the carrier frequency or to that at which the picture is scanned. The secondary 7 of a transformer, supplied with sinusoidal or rectangular highfrequency current, is connected through a condenser 6 between the control electrode of the electron gun and the anode 4. The beam is adapted to scan a mosaic 2.,
Patent GB-852503-A (GB)
Title: Improvements relating to vehicle suspensions
Inventor: STOCK CHARLES SAMUEL ROBERTS
IPC: B60G15/06
Filed: 1955-11-11
Abstract: 852,503. Telescopic suspension units; helical springs. GIRLING Ltd. Oct. 30, 1956 [Nov. 11, 1955], No. 32274/55. Class 108(3). A vehicle suspension unit comprises a telescopic damper 1 enclosed in a helical coil spring 3 one of the spring abutments taking the form of a movable member 10 which engages between the turns of the spring 3 and is adjustable to alter the effective length of the spring. As shown, the damper 1 is hydraulic, and its cylinder 1 has welded or brazed to it a helix 9 of square section - bar. The member 10 comprises a helical member which can be screwed along the helix 9, the pitch of which is equal to the pitch of the spring 3 in its fully extended condition. The member 10 has diametrically opposed lugs 11 which engage slots 12 formed in one of the two dust covers 13 and 14 of the unit. Thus. by rotating the dust cover 13 relative to the cylinder 1, the position of the member 10 is adjusted relative to the spring 3. The member 10 is located in position by means of a projection 16 which engages one of a corresponding series of notches 17 formed in the member 9. In an alternative form of the member 9 (Fig. 6, not shown), the helix is wound from rectangular cross-section bar which has a flange which projects radially outwards in the wound condition. This flange is turned upwardly at intervals to form projections which engage diametrically opposed recesses formed in the member 10 instead of the projections 16. The pitch of the helix 9 may be greater than that of the spring 3. This enables the pre-load of the unit to be varied, as well as the rate. Specification 745,843 is referred to.
Patent GB-1030343-A (GB)
Title: Electromagnetically operable sealed contact unit
IPC: H01H51/28
Filed: 1963-08-15
Abstract: 1,030,343. Electromagnetic switches. STANDARD TELEPHONES & CABLES Ltd. Aug. 15, 1963 [Aug. 23, 1963], No. 32293/63. Addition to 829,066 Heading H2B. The sealed magnetic contact device of the parent Specification is provided with a second set of contacts 15, 18. The movable contact 18 is mounted on a non-magnetic resilient strip welded at X to the " hairpin " movable magnetic limb 4a and arranged so that contacts 15, 18 close first and open last.
Patent GB-423817-A (GB)
Title: Improvements in protective arrangements for electric commutator motors
IPC: H02H7/085
Filed: 1933-11-20
Abstract: 423,817. Motor control systems and centrifugal switches. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and JACKSON, F. M., c/o General Electric Co., Witton, Birmingham. Nov. 20, 1933, No. 32323. [Classes 38 (iii) and 38 (v)] In order to prevent excessive currents flowing through and damaging electric commutator motors which are liable to stall or fail to start as for instance during an attempt to start the motors of a trolley bus with the brakes on, or an obstruction under the wheels of the vehicle, the setting of the overload protective device is automatically reduced while the motor is at rest. As shown in Fig. 1, the circuit breaker 7 is provided with two trip coils 8, 9 the first of which is operable by overload during the normal working of the motor 1 but is assisted by the auxiliary battery-fed coil 9 under the control of a centrifugally actuated switch 15 when the motor is at rest or is travelling at a very low speed. The switch 15 is constructed as shown in Fig. 2 by having a series of radial cylinders 17 in which freely movable balls 18 are disposed one or other of the balls completing circuit between the cylinders and the central contact when the motor circuit is rotating extremely slowly, so energizing the coil 8 to lower the setting of circuit-breakers 7. As soon as an appreciable rotation of the motor is reached however, the balls are moved by centrifugal force towards the outer ends of the cylinders, so breaking the circuit of coil 9 and automatically reducing the sensitivity of the circuit-breaker 7.
Patent GB-347570-A (GB)
Title: Improvements in or relating to change-speed gearing particularly for motor vehicles
IPC: F16H63/30
Filed: 1930-10-28
Abstract: 347,570. Variable speed gearing. MAYBACH-MOTORENBAU GES., Friedrichshafen - on - Bodensee, Germany. Oct. 28, 1930, No. 32361. Convention date, Nov. 6, 1929. Addition to 298,186, [Class 80 (ii), Gearing, Variable-speed &c.] [Class 80 (ii).] Two-speed gearing adapted to be used as an auxiliary gear upon a vehicle without a main friction clutch comprises instead of a double-ended clutch having teeth with bevelled ends to produce a catch-up or speed equalizing effect before engagement, as in the parent Specification, two single such clutches on separate shafts. Two single clutches 6, 10 slide on driving-shaft 1 and on a divided countershaft 12, respectively. The gears 4, 8, 9, 5 adapted to yield an over-speed are all fast on their shafts and supported on both sides in the casing 3. The clutches 6, 10 are operated simultaneously by a lever 14 pivoted at 13 with a quick-throw-over toggle spring 19 and resilient actuation 15, 22, 23, 21. To change from direct-drive shown to overspeed, rod 21 is moved to the left. Since clutch 6 is gripped by torque, spring 22 is compressed. On throttling the engine, clutch 6 is released, and clutch 10 is thrown by spring 19 against the ends of the teeth of the faster moving clutch 11. Since the engine slows rapidly, equality of tooth speed is soon reached, and clutch 10 slips into engagement, the throttle being afterwards reopened. To change down to direct drive, rod 21 is moved to the right, compressing spring 23, clutch 10 being gripped by torque. On closing throttle, clutch 10 is relea ed and clutch 6 is held riding on the ends of the teeth of the faster moving clutch 7 until the throttle is reopened, when clutch 6 slips in.
Patent GB-464703-A (GB)
Title: Improvements in or relating to reservoir brushes
IPC: A46B11/00
Filed: 1935-11-25
Abstract: 464,703. Reservoir brushes. DUNLOP, J. P. Nov. 25, 1935, Nos. 32563/35 and 16294/36. [Class 19] A reservoir brush having a stock 1 recessed to carry a deformable container 3 for polish and a pivoted cover 4 is characterized by an elongated slot 4<1> substantially equal to the length of the container so that pressure from the fingers can be used to express the contents through a nozzle 7. Reference has been directed by the Comptroller to Specifications 199,866 and 239,102, [both in Class 19].
Patent GB-1273133-A (GB)
Title: Improvements in pneumatic tyres
Inventor: GOUGH VERNON ERIC
IPC: B60C11/03
Filed: 1968-07-09
Abstract: 1,273,133. Wheel tyres. DUNLOP HOLDINGS Ltd. 8 July, 1969 [9 July, 1968], No. 32704/68. Heading B7C. To retain the wet grip characteristics of a tyre as the tread wear approaches the legal minimum, the tread, which comprises ribs or blocks 2 defining a groove 3, is formed with slots 4L in the ribs deeper than the groove. The slots open only to the ground-contacting portion of the tread and the slot walls do not contact each other in the normal inflated condition of the tyre and have a depth in the range from 1 millimetre below the groove's bottom to the midpoint between the groove's bottom and the tyre's outermost ply. The bottom of each slot may be bulbous, and of circular cross-section.
Patent GB-416335-A (GB)
Title: Improvements relating to door handle fittings
IPC: E05B3/04
Filed: 1933-11-23
Abstract: 416,335. Securing door handles. KIRKCALDY, J., Letham Fues, Leven, Fifeshire. Nov. 23, 1933, No. 32717. [Class 44.] A door handle is secured to a polygonal spindle 2 by an axial set screw having its head 6 recessed into the handle, the spindle being drilled to a bore 8 greater than the outside diameter of the set screw 5 and then being constricted near the outside end where the interval thread 4 is then formed. According to the Provisional Specification a knurled screw cap may be provided for the recess in the handle. Specification 400,003 is referred to.