baber/WOPTO huggingface dataset:
Patent GB-713632-A (GB)
Title: Improvements in or relating to change speed gear controls
Inventor: HAIST HARRY
IPC: F16H63/34
Filed: 1950-03-10
Abstract: 713,632. Variable-ratio-gear selecting mechanism. FOWLER & CO. (LEEDS), Ltd., J. Feb. 19, 1951 [March 10, 1950], No. 6032/50. Class 80 (2) A bifurcated member 13 is arranged to lock the selector member 8 of a stepped-ratio gear in neutral or gear-engaged positions and is continuously urged about trunnions 11, toward the neutral position shown in Fig. 1 by a torsion spring 18, Fig. 2. A gear lever 1 is movable in a gate 2, Fig. 6, to selectively engage a lower extension 6 with one of the selector members 8 which is then movable by the gear lever 1 to establish a gear ratio. Each member 8 has a slot 17 which is engaged by one limb of the member 13 in the neutral position and is thereby locked. The member 13 is pivoted about its trunnions 11 when the lever 1 is moved in the neutral slot of the gate 2 unlocking the selected member 8 for sliding between the limbs of the member 13 whilst leaving the other selector members locked. Further slots 17a in the members 8 receive the fork 13 to lock the members in their "gearengaged positions." A control member 19 for a separate forward and reverse gear train may be interlocked, by a blade 20 engaging slots 21 in extensions 22 of the members 8, with the control member 1 to prevent some or all of the ratios from operating in one position of the separate gear. In a similar arrangement, Fig. 3 (not shown). the selector members are interconnected with a clutch control whereby the gear changes can only be effected when the clutch is disengaged.
Patent GB-1298448-A (GB)
Title: Vacuum electric switch
Inventor: GEBAUER ECKEHARD
IPC: H01H33/662
Filed: 1970-02-09
Abstract: 1298448 Vacuum switches ELEKTROAPPARATE - WERKE BERLIN - TREPTOW VEB 9 Feb 1970 6042/70 Heading H1N A vacuum switch has a cylindrical metal envelope 1 and a cylindrical metal particle screen 2 mounted and separated from each other and a fixed contact 7 by a pair of insulating ceramic or glass rings 4, 5. The envelope, screen and a cylinder 3 are soldered to the ceramic rings 4, 5 and contact 7 is soldered or brazed or welded to the cylinder 3. The movable contact 9, carries a plate 11 inside the screen 2 and attached by a bellows seal to the envelope 1. A bearing 13 is mounted within the bellows.
Patent GB-690372-A (GB)
Title: Improvements in or relating to chromium-free air-hardening alloy steels and articlesof manufacture produced therefrom
IPC: C22C38/16
Filed: 1948-02-27
Abstract: A tool, die and structural steel alloy has the following composition: C 0.05-2.50 per cent, Si 0.50-2.50 per cent, Mn 0.75-3.25 per cent, Mo 0.25-2.62 per cent, Cu 0.35-2.00 per cent, Be 0.03-0.30 per cent, Fe and the usual impurities in common amounts the remainder.  In alloys within the above range containing C 1.0-1.5 per cent, Si 1.5-2.5 per cent, Mn 1.5-3.25 per cent, Cu 1.25-2 per cent, a part of the carbon may be present as a graphite which is substantially uniformly distributed in the form of well-defined nodules. Specifications 653,843, 655,882 and 656,729 are referred to.
Patent GB-1188901-A (GB)
Title: Electro-Photographic Apparatus.
Inventor: BRODIE IVOR
IPC: G03G15/18
Filed: 1968-02-07
Abstract: 1,188,901. Electro-photographic apparatus. VARIAN ASSOCIATES. Feb.7, 1968[Feb.1O, 19671, No. 6093/68. Addition to 1,160, 818. Heading G2H. In an electro-photographic apparatus, the photon image is projected on to a photo-conductive plate 5, and the image transferred to an electro-graphic recording web 24 which is brought into contact with the plate 5 by partial vacuum means. As shown in Fig.1, a lever 22 is pivoted causing a conductive plate 17 to seal a portion of the web 24 against O-ring 14 surrounding flange 9. Air is then drawn by pump 12 from the space between the web 24 and plate 5 causing the web to closely contact the plate surface. After exposure, the pump is reversed, thus blowing the web away from the plate 5, to facilitate its removal without damaging the plate 5.
Patent GB-197766-A (GB)
Title: Improvements in or relating to epicyclic gearing
IPC: B61C9/38
Filed: 1922-03-02
Abstract: 197,766. Fraser, P. L. R. March 2, 1922. Transmission gear of invariable ratio. - In friction and toothed epicyclic gearing for use in connecting two or more parallel shafts in electric trucks, locomotives, &c., frames carrying toothed or friction members, or both, engaging corres- - ponding members on at least one of the shafts are connected by cranks or the like to at least one other of the shafts. Centrifugal force assists to produce a driving pressure between the surfaces. The crank-pin drive may be spring- cushioned. Gear teeth may be arranged beside the friction surfaces. Fig. 5 shows an electric truck or locomotive driven from a suspended electromotor T, the shaft A of which drives a pair of crank-pins I side-by-side, each operating a frame K provided with lugs B<1>, C<1> and having a friction surface l<1> engaging a friction wheel P on the driven axle. The lugs B', C<1>, on the two frames are interconnected by cranks so that the movements of the frames are completely controlled.
Patent GB-1367096-A (GB)
Title: Method of manufacturing a component for use in a roller clutch method of manufacturing a component for use in a roller clutch assembl y
IPC: B23P15/00
Filed: 1971-03-05
Abstract: 1367096 Making a clutch component; extruding JOSEPH LUCAS (INDUSTRIES) Ltd 17 Feb 1972 [5 March 1971] 6218/71 Headings B3A and B3P A roller clutch component including a sleeve 9, Fig. 1, having a stepped bore defining an internally cammed wide portion 10a within a head part 9a of the sleeve and a narrow portion 10b within a shank part 9b of the sleeve is made by cropping a steel bar to produce a slug having a length to diameter ratio greater than 0À75; preferably 1; deforming the slug into a substantially cylindrical billet having a diameter substantially equal to the diameter of the head part 9a of the sleeve; heat treating the billet, preferably by a spheroidizing operation, to remove work hardening; forming an axially extending, centrally disposed bore in the billet; positioning the billet in a die 18, Fig. 5, and with a punch 19 impact extruding the billet such that metal flows in the direction of movement of the punch and produces a preform 21 defining the shank part of the sleeve and having a head portion 21a which tapers inwardly, preferably at an angle of 80-100 degrees, to the shank part; heat treating the preform to remove work hardening, preferably by a spheroidizing operation; and using a further punch 25 and die 24, Fig. 6, to perform a reverse impact extrusion process so that the included angle of the tapering head portion of the preform is increased, preferably to 140-170 degrees, to produce the head part of the sleeve. Preferably the sling is reduced in length by at least 30% in the deforming stage and that during the reverse extrusion step a plurality of angularly spaced ribs 28, Fig. 1, integral with the head part are produced. The bore in the billet is formed either by drilling or by an impact extrusion operation followed by a piercing operation. The pierced billet is heat treated by a recrystallization process. A mandrel 22 in the punch 19 is tapered to facilitate its removal from the preform. An example of the steel is carbon 0À21%, manganese 1À24%, silicon 0À3%, sulphur 0À033%, phosphorus 0À06%, nickel 0À13%, chromium 0À23%, molybdenum 0À15% and copper 0À15%, the remainder being iron.
Patent GB-355651-A (GB)
Title: Improvements relating to the automatic starting of asynchronous dynamo-electric machines
IPC: H02K17/28
Filed: 1930-02-25
Abstract: 355,651. Alternating current commutator machines. FORGES. ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT, 75, Boulevard Haussmann, Paris. Feb. 25,1930, No. 6239. Convention date, May 15, 1929. Addition to 343,576. [Class 35.] In a modification of the invention of the parent Specification, the automatic starter comprising resistance and inductance in parallel forms the secondary circuit of the asynchronous machine which comprises a primary or rotor member R carrying a primary winding P and a commutator winding F, and a stator S carrying the parallel connected inductance and resistance windings T, D connected to brushes b<1>, b<2>, b3 on the commutator c ; the stator windings may be in superposed slots which may differ in number, and the slots of the two series mav be joined by slits, or the windings may be in the same slots in which case they are preferably separated by a bundle of laminµ. Both ends of the windings D, T may be connected to the commutator. In a modification, the resistance winding D may be replaced by a squirrel cage formed of magnetic metal located in the same slots as the winding T to give close magnetic coupling. The squirrel-cage winding is insulated from the winding T but not from the core. The machine may be used as a motor, generator, or power factor corrector.
Patent GB-704130-A (GB)
Title: Oil separators for air or other gas pumps and other purposes
Inventor: BOYCE GUY BARON
IPC: F04B39/16
Filed: 1952-03-11
Abstract: 704,130. Gas compressors. HYDROVANE COMPRESSOR CO., Ltd. Aug. 7, 1952 [March 11, 1952], No. 6263/52. Class 8 (1). Means for separating oil from oil laden air or other gas comprises a permeable pad c, e.g. of compressed wool-felt, contained in a housing a and adapted to be saturated with oil such that a film of oil can accumulate on its emergent face and trickle into a gas-outlet chamber e having a gas outlet f; the oil is discharged from the chamber through a spring- loaded valve h responsive to the pressure in the chamber and forming with its seating i an automatically-variable restricted orifice. The gas is supplied by a rotary gas pump b through a perforated duct d. The valve h is held open by a stem i attached to a diaphragm k loaded by a spring m and subjected on its under side to the oil pressure, the oil passes through an orifice n and a passage p and returns to the pump. When the oil has been discharged from the chamber e the valve will move towards its closed position due to the higher pressure then acting on the diaphragm.
Patent GB-942483-A (GB)
Title: Improvements in liquid bleaching compositions
Inventor: RODGER MITCHELL MCOLSON
IPC: D06L4/17
Filed: 1961-02-21
Abstract: A liquid bleaching composition suitable for bleaching cotton and linen comprises a perbenzoic acid which is substituted in the benzene nucleus by one or more nitro, chloro, cyano, C1 to C4 alkyl or C1 to C4 alkoxy groups and has a melting point above 50 DEG C., dissolved in a water soluble solvent having a boiling point of at least 120 DEG C. at atmospheric pressure and which is inert to the substituted perbenzoic acid, the solvent being so selected that the solubility of the substituted perbenzoic acid in the solvent and the solubility of the solvent in water are such that an available oxygen concentration of at least 20 p.p.m. by weight of water can be attained under conditions such that none of the solvent remains undissolved in the water.  Suitable solvents are the esters obtained by the complete esterification of polyhydric alcohols with fatty acids containing 1-3 carbon atoms, e.g. ethylene glycol diacetate and glycerol triacetate and mixtures thereof.  Specification 886,188 is referred to.
Patent GB-1170006-A (GB)
Title: A method of Bonding Electromagnetically Formed Patterns of Magnetic Powder onto a Surface of a Substrate
Inventor: STERLING HENLEY FRANK
IPC: G03G15/20
Filed: 1967-02-10
Abstract: 1,170,006. Fixing powder patterns. STANDARD TELEPHONES & CABLES Ltd. 10 Feb., 1967, No. 6521/67. Heading B6C. Electromagnetically -formed patterns of magnetic powder which contains a thermal bonding agent are fixed to the surface of a substrate by a process which includes heating the powder in a radio-frequency field after the formation of the patterns. Typically the process comprises forming a latent electromagnetic image on a drum, developing using the magnetic powder, and transferring the pattern under pressure to a substrate, Fig. 1, (not shown), where it is fixed using the R.F. field. The magnetic powder may be magnesium-nickel ferrite or nickel-zinc ferrite and the thermal bonding agent is normally a resin or a wax, e.g. a polyamide resin; carbon, metal dust, or a dielectric material may also be added to the powder formulation. The apparatus for fixing the pattern comprises an R.F. oscillator 1, Fig. 2, connected to electrodes 2, 3 between which the substrate, e.g. paper strip 4, passes. Alternatively the electrodes can be arranged side-by-side with a meandering gap filled with insulating material therebetween, Fig. 3 (not shown), the substrate being passed over the electrodes, or the substrate can be passed through a coil connected to a R.F. oscillator or can be made to transverse the field of a waveguide connected to an oscillator.
Patent GB-377608-A (GB)
Title: Improvements in or relating to valves
IPC: F16K1/36
Filed: 1932-03-04
Abstract: 377,608. Valve components. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and BRITISH THERMOSTAT CO., Ltd., Teddington Works, Windmill Road, Sunbury, Middlesex. March 4, 1932, No. 6580. [Class 135.] Closure members; lift.-A lift valve member d is formed with a depending rim or flange f within which a hard cellulose (celluloid) or metal disc g is mounted, backed by a pad h of indiarubber. This arrangement provides a wear resistant, non-corrosive, and resilient bearing surface.
Patent GB-125745-A (GB)
Title: Improved Apparatus for Raising Submerged or Sunken Vessels.
IPC: B63C7/06
Filed: 1918-04-23
Abstract: 125,745. Marks, E. C. R., (Odero f¨ Aless & Co., N.). April 23, 1918. Addition to 122,708. Sunken ships, raising. - The second set of floats described in the parent Specification is replaced by a set of floats 2, each divided into three longitudinal chambers e, e, f extending the entire length of the float, transverse members g being provided at or near each end of the floats, whereby the floats may be connected by short chains to form a belt. The chambers e, e are air chambers and the chamber f is floodable. A belt of floats is sunk by flooding the chambers f and is held at the desired depth by buoys F. It is then towed into position below the ship, after which the water in the chamber f is ejected by compressed air.
Patent GB-913749-A (GB)
Title: Improvements in high temperature alloys
IPC: C22C19/05
Filed: 1960-02-26
Abstract: A high-temperature alloy contains in percentage by weight:- .Ni.40 -80 .Cr.10 -25 .Nb and/or Ta.0.25- 5 .Mo and/or W.0.5 - 8 .Ti not more than.0.75 .Al.0.25- 3 .Mn not more than.2.0 .Si not more than.2.0 .C not more than.0.2 .Fe.balance Heat treatment consists of heating for times varying from 1/2 to 1 hour per inch thickness of the piece in the range 1600-2100 DEG  F.  Use of the alloy for turbine parts is referred to.
Patent GB-546521-A (GB)
Title: Improvements in spinning machines for the production of yarns or threads
IPC: D01H13/16
Filed: 1941-05-29
Abstract: 546,521. Delivery-stopping and drawing roller arrangements for spinning machines. FAIRBAIRN LAWSON COMBE BARBOUR, Ltd., and SUFFERN, W. S. May 29, 1941, No. 6875. [Class 120 (ii)] In a spinning frame a succession of top slipdraft rollers C, C<SP>1</SP>, C<SP>2</SP> and the top feed roller B are mounted on a pivoted support E, E<SP>1</SP> which tends to assume a position in which the rollers C, C<SP>1</SP>, C<SP>2</SP> are separated from the co-operating portion D of the slip-draft device and the top feed roller B is disengaged from the bottom feed roller B<SP>1</SP>, but is normally held by a detector lever K or a member connected therewith in a position in which the rollers C, C<SP>1</SP>, C<SP>2</SP> and top feed roller B can bear on the fibre as it passes through the machine, the detector lever K being held in its retaining position by the yarn after leaving the drawing rollers and on its release by breakage or failure of the yam automatically taking up a position in which it releases or effects the release of the pivoted support E, E<SP>1</SP> which then turns automatically to its separating position. The pivoted support comprises rods E carrying bearings for the rollers C, C<SP>1</SP>. C<SP>2</SP> and fixed in arms e forming part of a casting E<SP>1</SP> pivoted on a shaft F and weighted at E<SP>2</SP>. A pad e<SP>6</SP> to grip the sliver against a part of the machine is provided on an arm e<SP>5</SP>. The detector lever K is suspended from a rod or stud L on which is also mounted the segment M formed with a curved slot m through which passes a pin k fixed to the lever K. The part m<SP>1</SP> of the segment M is concentric with the stud L and normally in contact with a runner N adjustably mounted in an arm n on one of the rods E the rollers B, C, C<SP>1</SP>, C<SP>2</SP> then occupying their working position. When piecing-up the lever K may be pushed back and held out of action by a notch or step m<SP>3</SP> and concave portion m<SP>4</SP> engaging the runner N. On breakage of the yarn the lever K swings forward assisted by the ball P<SP>1</SP> running to the right-hand end of the tube P and the pin k strikes the front end of the slot m thereby turning the segment M and presenting the recess m<SP>2</SP> to the runner N and allowing the weight E<SP>2</SP> to turn the pivoted support E, E<SP>1</SP> until arrested by the gripping pad e<SP>6</SP>. To prevent the segments M from swinging forward during doffing and to ensure that all the ends are started immediately after doffing has been completed an assembly is provided comprising a lever U pivoted on a shaft t<SP>2</SP> carrying an arm t<SP>1</SP> secured to a rod T having a swivel block t mounted on a pin s<SP>1</SP> adjustable in a slot s in an arm S fixed on a rod Q to which are secured arms R arranged opposite each segment M. On raising the lever U until a pin u enters the notch v<SP>1</SP> the shaft Q is turned to bring the arms R into contact with the front faces of the segments M. Specification 536,760 is referred to.
Patent GB-419412-A (GB)
Title: Improvements in and relating to the production of metal casts from gelatine and likeheat-developable reliefs
IPC: B41C3/00
Filed: 1933-05-11
Abstract: 419,412. Casting processes. KODAK, Ltd., Kingsway, London.-(Assignees of Murray, A. ; Kodak Park, Rochester, New York, U.S.A.) May 11, 1933, No. 6904/34. Convention date, May 16, 1932. Divided out of 419,368. [Class 83 (i).] Mould materials.-In the process of preparing metal casts from a gelatin or like heat-developable relief, for example, as described in Specification 390,881, [Group XX], the surface of the heat-developable material is coated before or after the development with a thin layer of a plastic lacquer and the metal cast is then produced from the relief. The lacquer may be applied before or after the exposure of the surface to light. In one example, the developable layer consists of gelatin, ferric ammonium oxalate, sodium dihydrogen phosphate, and ammonium nitrate, and the lacquer consists of cellulose nitrate, tricresyl phosphate and ethyl acetate. Other cellulose or resin varnish lacquers of well-known type may be used. Specification 419,368 also is referred to.
Patent GB-582738-A (GB)
Title: Improvements in or relating to chucks for machine tools
IPC: B23B31/32
Filed: 1944-04-15
Abstract: 582,738. Chucks. PATTON, A. M. April 15, 1944, No. 6980. [Class 83 (iii)] [Also in Group XXIII] Chucks and similar work-holders, of the type in which the jaws are attached to a spring back-plate capable of being distorted to apply the grip, have means permitting the application of increased pressure without producing unbalanced forces. As applied to a vice or holder for use in drilling, the chuck body 2 has a shank 1 for insertion in a lathe &c. tailstock and a flange 4 providing a seating for a ground spring-steel, plate 7 secured by screws 6. Two opposed jaw-carriers 8, 9 are attached to the plate by screws 12 and the jaws 14 are secured by screws 20 with concave heads 19 engaging the points of an adjustable screw locked at 17 and a screw provided with a hand-crank 18 for applying the closing pressure. The gripping- surfaces 15 are ground to be cylindrical in the closed position. The screws are carried by a loose ring 13, lateral swinging of which about the axis of the screws is limited by stop screws 22, Fig. 2 (not shown). In a modification for four jaws 29, Fig. 5, balanced pressure is applied by a chain of four pressure-applying links 31 connected by intermediate links 32. Surfaces 30, on the jaws, concentric with the chuck axis are engaged by opposed rollers 33 for one pair of jaws and by a flat-ended abutment screw 34 and a round-ended screw 35 for the other pair provide a pressure-applying device free to float, and are operated by a key applied to the screw 35. A further modification has a ring 38 carrying the spring plate 37 mounted to rotate about an axis Y-Y in a recessed back-plate 36 eccentrically mounted with respect to the machine axis XX. Indexing.-A series of recesses 39 coact with a plunger 40 to effect indexing as in drilling pitched holes.
Patent GB-1164414-A (GB)
Title: A Tone-Free Multiplexing System Using a Delta Modulator
IPC: H04J3/04
Filed: 1968-02-13
Abstract: 1,164,414. Electric selective signalling. BENDIX CORP. 13 Feb., 1968 [13 March, 1967], No. 7037/68. Heading G4H. In a time division multiplex system in which digital data from a source 32 (Fig. 1) is time multiplexed with recurrent binary bits, occurring at times P, P + 1, . . . Pn . . . P, . . . representing an analogue input signal to a digitizer 5, the data being transmitted to a receiver where the digital data and the analogue signal are recovered, the value of the transmitted digitized signal at times P is the complement of the value of the bit at times P-1 and, at the receiver, at bit times P, bits complementary in value to the value at bit times P-1 are generated. In the embodiment described in which the digitizer 5 is a delta modulator in which the output signal from a bi-stable device 15, the state of which is controlled by a comparator 7B and gates 9, 10, 13, 14 is fed back via an integrator 6 for comparison with the audio input signal, at times P an "0 " signal on line 25 complements bi-stable device 15, disables AND gate 22 and enables AND gate 23 so that digital data is transmitted. At every sixth time P a framing counter 30C prevents the transmission of digital data and enables a frame generator 33 which transmits alternate 0 and 1 framing pulses. At the receiver the framing pulses are identified by a frame decoder so that at times P, AND gate 46 is enabled to allow the digitized signal to be fed via a shift register 51 to an integrator 63. At times P the digital data is recovered at output 50 and an AND gate 57 is enabled so that the converse of the bit at time #P - 1 at terminal 53D of shift register 51 is fed via OR gate 59 to the integrator.
Patent GB-471753-A (GB)
Title: Improvements relating to tanning and to materials therefor
IPC: C14C1/08
Filed: 1936-03-09
Abstract: 471,753. Making leather. STEVENS, A. H. (Hall Laboratories, Inc.) March 9, 1936, No. 7068. [Class 76] The bating of hides &c. is carried out in baths comprising a bating enzyme together with an alkali metal polyphosphate or pyrophosphate or metaphosphate. The solution is maintained at a pH of about 7À4. Boric acid may also be present. The polyphosphate may be obtained as described in Specification 378,345, [Group III]. Specifications 435,475 and 435,710 also are referred to.