baber/WOPTO huggingface dataset:
Patent GB-883755-A (GB)
Title: Improvements in and relating to variable speed friction gears
IPC: F16H15/54
Filed: 1957-12-10
Abstract: 883,755. Variable - speed friction gear. WEBER, M. Dec. 10, 1957 [Dec. 10, 1956; May 28, 1957], No. 38416/57. Class 80 (2). A variable-ratio gear comprises a driving shaft 1 connected through differential balance gearing 2, 3 to planet carriers 4 in which are mounted friction rollers 7, each having a conical head 7b engaging a driven ring 10 and a frustoconical portion 7a engaging reaction rings 11, 12 mounted in a casing 16 through cam-andball torque responsive means 13 operative to control the force engaging the friction members, the frusto-conical portions of the rollers also engaging freely mounted sun-wheels 6. The driven rings 10 are mounted in an output drum 31 formed with axial slots 34 within which slide radially outwardly projecting pins 30 carrying the driven rings, these pins also sliding through inclined slots 36 in a control drum 37 turned relatively to the output drum to move the rings axially and alter the ratio of the gear. Balls 13 mounted in a cage 14 lie between the two independently rotatable reaction rings 11, 12 coacting with the frusto-conical portions of the planetary rollers 7, the balls engaging cammed surfaces having alternate dwell and high points on the rings 11, 12, and also coacting with a similar surface on a ring 15 rotating with the ring 11. The arrangement is such that, with increasing load on the gear, the balls 13 tend to separate the rings 11, 12 from the ring 15, as they ride up the cam slopes, and accordingly wedge the planetary rollers 7, which are mounted upon their axles with some play, more firmly into engagement with the driven rings 10. The cage 14 is carried by an eccentric stud 12a at the end of a pin 22 journalled in the casing 16. A spring 25 connected to the eccentric stud 12a, biases the pin 22 to restore the ball cage 14 and the balls 13 to a position in which minimum friction loading is applied to the planetary rollers 7 &c. Initial loading of the friction members is adjusted by turning a hand wheel 20 formed with a worm 19 meshing teeth on a ring 17 secured to the ring 15. Specification 839,844 is referred to.
Patent GB-1438377-A (GB)
Title: Battery chargers
IPC: H02M3/135
Filed: 1973-08-14
Abstract: 1438377 Battery chargers CANADA MINISTER OF DEFENCE 14 Aug 1973 38425/73 Heading H2H A battery charger comprises a pair of input terminals X, Y for connection to a source of charging current, a pair of output terminals Z, Y<SP>1</SP> for connection to a battery to be charged, a series resonant circuit including an inductor L and a capacitor C, a first thyristor SCR1 for enabling the source to charge the capacitor and a second thyristor SCR 2  for enabling the capacitor to supply charging current to the battery. The thyristor SCR1 is initially switched on to charge the capacitor C to twice the voltage V 0  of the source, whereupon the thyristor is commutated off and the thyristor SCR 2  is switched on. The capacitor then discharges into the battery. Triggering pulses for the thyristors are provided by a circuit including an oscillator and multivibrators, Fig. 8 (not shown). The source voltage is greater than the battery voltage but circuits are also described for charging batteries from a source voltage which is less than the battery voltage.
Patent GB-1029364-A (GB)
Title: Viscous drive coupling
IPC: F01P7/04
Filed: 1964-09-21
Abstract: 1,029,364. Hydrodynamic couplings. EATON MANUFACTURING CO. Sept. 21, 1964 [Oct. 14, 1963], No. 38466/64. Heading F2C. A shear type fluid coupling comprises an input member 11 having annular projections 63, 64 interfitting between annular projections 65, 66 on an output casing 12. The casing comprises a main member 42 rotatably mounted by means of a ball bearing 23 on an input shaft 16 and having blades 14, 15 of a vehicle engine cooling fan bolted thereto, the member 42 being secured by screws to a cast metal cover 53 to which is secured a partition 60 separating a reservoir 62 from a working chamber 61. Liquid can pass from the reservoir to the working chamber through an opening 73 controlled by a valve arm 85 which is adjusted by a bimetallic temperature responsive coil 80 supported on the cover 53 and serving to close the opening 73 at relatively low temperatures and open the opening at higher temperatures. Liquid is returned from the working chamber to the reservoir through passages 71b, 71a in the cover 53, a pumping means formed by projections 90 on the cover serving to direct liquid into the passages 71a. Apertures 74 in the input member 11 direct fluid to opposite sides of the input member. A plurality of radially extending V-shaped grooves 79 are provided across the projections 63, 64 and extend below the projections to facilitate flow of fluid radially into the area of the projections. Cooling fins 67, 68 are provided on the casing member 42 and cover 53.
Patent GB-972365-A (GB)
Title: Improvements relating to apparatus for cutting gears and the like
IPC: B23F21/22
Filed: 1963-10-01
Abstract: 972,365. Gear-cutting. GLEASON WORKS. Oct. 1, 1963 [Oct. 8, 1962 (2)], No. 38655/63. Heading B3K. Apparatus for cutting gears comprises a face mill cutter having a body 35 rigidly supporting a set of inside and outside cutting blades 47, 48, a member 43 movable on the body and supporting a second set of inside and outside cutting blades approximately on the same circle, and means operable during rotation of the cutter to reciprocate the member to offset the blades into cutting and non- cutting positions. In a machine for formcutting spiral bevel gears, the work support is fed by a pull-rod 32, Fig. 7, attached to a piston 31. The initial cutting position is determined by an adjustable stop 33 and the feed is controlled by a cam 21, rotated once for each tooth cut, acting through a lever 23 and an adjustable block 25. The cutter body 35, Figs. 2 and 3, is secured to the spindle 12 by screws 38 and engages a conical spigot 36. Sets 41 of three roughing blades (47 cutting outside, 48 inside and 49 bottom) are secured to the body by screws 39. The slide 43 carries an outside finishing blade 44 and an inside blade 45. The slide is guided by studs 51 and is moved by cams 61, 58 on a sleeve attached to a piston 55 and engaging tapered surfaces in a bore in the slide. Thus, movement of the piston 55 either retracts or advances the blades in unison. In the cutting position, the piston 55 pulls rearwardly a plate 69 which engages surfaces 72 on the slide 43 and clamps it. A spring guard 75 having slots filled with rubber assists in releasing the clamp plate 69 and prevents the ingress of dirt. Before the finishing blades take a cut, the cutter may be slightly retracted by operation of the piston 33 to prevent the roughing blades contacting the gear-teeth. In a modification, the cutter slide 143, Fig. 8, is moved to finishing position by a piston 123 acting on a lever 125 which depresses a rod 115 projecting from the spindle 112. In a further modification, the cutter slide 243, Fig. 10, has wedge surfaces 236 so that the tips of the blades are moved to a position for finishing the slot bottoms as well as the sides for finishing the tooth flanks. In a final modification, the roughing blades 363, Fig. 13, are mounted on a member 349 moved to cutting position by fluid supplied to a chamber 348. When the pressure is released, the blades are withdrawn by springs 354 and the cutter slide carrying the spindle 312 and the cutter body 335 is advanced by retraction of the piston 33, Fig. 7, so that the finishing blades 342 are advanced to cutting position. The blades are secured by screws 364, 343.
Patent GB-1353414-A (GB)
Title: Rivet setting apparatus and method
IPC: B21J15/04
Filed: 1971-08-18
Abstract: 1353414 Riveting ILLINOIS TOOL WORKS Inc 18 Aug 1971 [19 Aug 1970] 38784/71 Heading B3U A tool 10 carrying a setting pin 24 of a rivet 22 is advanced towards a workpiece 26 until the latter is pierced by the rivet shank 22a whereupon engagement of an abutment 16 of the tool with a complementary abutment 28 of a bearing 12 stops the advancement of the tool so that a hammer 20 can continue its forward movement and strike the setting pin 24 by sliding in a chamber 18 of the tool. The rivets may be plastic.
Patent GB-1488089-A (GB)
Title: Method for enhancing the drawability of low manganese steel strip
IPC: C21D8/04
Filed: 1975-09-22
Abstract: 1488089 Heat-treating steel strip USS ENGS & CONSTULTANTS Inc 22 Sept 1975 [30 Sept 1974] 38845/75 Heading C7A [Also in Division B3] Strip for deep drawing is obtained from hotrolled steel band which contains (in wt. per cent) C 0À014-0À06 Mn 0À01 -0À25 P 0À015-0À12 Si #1 Fe balance at least 0À014%C being in the uncombined form, by cold-rolling with 60%-90% reduction, followed by slow heating to an annealing temperature between Ac 1  and Ac3 and holding for a time sufficient to produce the desired r value. The preferred P and O contents of the steel are #0À04% and >300 p.p.m. respectively and the preferred annealing temperature 760-850‹C.
Patent GB-1196051-A (GB)
Title: Method and Apparatus for Cleaning Open-End Spinning Devices.
IPC: D01H11/00
Filed: 1967-08-24
Abstract: 1,196,051. Cleaning spinning machines; open-end spinning device. MASCHINENFABRIK RIETER A.G. 24 Aug., 1967 [24 Aug., 1966], No. 39025/67. Headings D1F and D1D. In an open end spinning device 1, the fibre collector surface 3 is cleaned by impurities by a cleaning means brought in contact with the surface automatically, the actuation and termination being dependent upon time and/or spinning conditions. The cleaning means may be actuated by the detection of a decrease in tension of the doffed yarn resulting from a yarn break; or after a predetermined length of yarn has been doffed; or after a predetermined number of revolutions of the fibre collector surface. Apparatus comprises an open end spinning device 1 having a filbre collector surface 3 and a cleaning device directing a flow of fluid against the fibre collector surface. The cleaning device may comprise a guide tube extending through a cover element above the collector surface, and connected to a source of compressed air or pressurised cleaning solvent. The guide tube may be provided with a retractable cleaning element e.g. a brush or scraper. A coarser yarn may be produced on the detection of a break by increasing the speed of the draw rolls, the coarser yarn being wound as the outer turns on a bobbin. The fluid and impurities may be removed from the spinning chamber by means of suction, the removed fluid being received in a reservoir for recirculation.
Patent GB-1066215-A (GB)
Title: Improvement in or relating to silver salt diffusion transfer photographic materials
IPC: G03C8/24
Filed: 1963-10-04
Abstract: 1,066,215. Photographic transfer processes and material therefor. FUJI SHASHIN FILM KABUSHIKI KAISHA. Oct. 4, 1963 [Nov.12, 1962], No. 39275/63. Heading G2C. In the silver salt diffusion transfer process the image is transferred in the presence of a toner of one of the tautomeric formulae. wherein R is hydrogen or alkyl with 1 to 4 carbon atoms and R' is hydrogen or halogen or an alkyl or an alkoxy group with 1-4 carbon atoms or a nitro group. The toner may be in either the silver halide emulsion, the developer or in the imagereceiving material. Specified toners are wherein R is hydrogen or methyl and R' is chlorine, a methyl, methoxy or nitro group. The image receiving material may contain colloidal palladium sulphide as nuclei and the silver halide emulsion may contain a developer (hydroquinone) and benzotriazole.
Patent GB-1530697-A (GB)
Title: Outboard motors
IPC: F02B61/04
Filed: 1977-09-22
Abstract: 1530697 Transmission gearing D B COWIE 22 Sept 1977 [23 Sept 1976] 39407/76 Heading B7V An outboard motor propulsion unit is provided with a clutching arrangement comprising pins 3A on a thrust bearing 3 engageable with pins 4 in the hub of a propeller which is spring biased towards the thrust bearing with a rotatable control rod 10 between the bearing and hub for effecting disengagement.
Patent GB-1023579-A (GB)
Title: Semi-conductor diodes and their manufacture
Inventor: COLLIER GODFREY
IPC: H01L29/00
Filed: 1962-10-18
Abstract: 1,023,579. Semi-conductor devices. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Sept. 18, 1963 [Oct. 18, 1962], No. 39467/62. Heading H1K. A semi-conductor diode is produced by diffusing material into a body of one conductivity type to form a region of opposite type and then alloying a second material to which a contact may be soldered into the face of the body to a depth greater than that of the first diffusion and to form a PN-junction with the body. The body may consist of silicon, the first material of boron or phosphorus and the second material of aluminium, aluminiumsilicon alloy, gold or a gold alloy. The invention is particularly applicable to avalanche diodes.
Patent GB-1188246-A (GB)
Title: Improvements in or relating to Fluidic Apparatus
Inventor: LAZAR JEFFREY M
IPC: F15C1/14
Filed: 1968-08-19
Abstract: 1,188,246. Fluid oscillators. HONEYWELL Inc. Aug.19, 1968 [Aug. 28, 1967], No.39542/68. Heading G3H. A fluid oscillator comprises a bi-stable amplifier 11 provided with control channels 16, 17 fed by a variable gain proportional amplifier 13 with control channels 34, 35 fed through feedback connections 60, 70 provided with capacitances 63, 73 and resistors 61, 71. The gain of amplifier 13 controls the frequency of the oscillator and is varied by altering the bias pressure applied to channel 41.
Patent GB-907911-A (GB)
Title: Improvements in and relating to welding methods and apparatus
IPC: B23K9/18
Filed: 1958-12-09
Abstract: 907,911. Welding by fusion. BABCOCK & WILCOX CO. Dec. 9, 1958 [Dec. 10, 1957], No. 39657/58. Class 83 (4). In arc welding using a pair of consumable electrodes the arcs are suplied by two D.C. sources of opposite polarity connected between the electrodes and the work, and the arc currents are substantially equal. Tubes 15, 15<SP>1</SP>, Fig. 1, and a plate 16 mounted on a support 13 are submerged arc welded by two electrodes 20, 20<SP>1</SP> of the same diameter fed by rolls 25, 25<SP>1</SP> of different size mounted on a common driving shaft 22. Constant potential D.C. sources 10, 10<SP>1</SP> of opposite polarity are connected between the support 13 and contact shoes 23, 23<SP>1</SP> which are separated by insulation 24. The electrodes are staggered in the direction of welding, the reverse polarity electrode 20<SP>1</SP> leading. The two welds may be deposited in grooves of different size to match the deposition rates, the welds may be made in two passes, the electrodes being reversed for the second pass. The contact shoes 23, 23<SP>1</SP> have adjustable slotted guide tips. The work may be traversed under the welding head but as shown in Figs. 4 and 5, the welding head 40 is floatingly secured to a boom 71 on a carriage movable parallel to the weld seams. The welding head 40 is adjustably and lockably mounted on a pivot 103 carried by a slide 100 movable on a bracket 41 by a mechanism having a worm 98 and screwed rod 97 to vary the distance of the welding head 40 from the work. The bracket 41 is fixed to the end of a shaft 42 pivotally mounted in a frame 66 and supported for limited longitudinal floating movement by a spring 55 and by a guide wheel 125 adjustably attached to the bracket 41 and shaped to engage the work and maintain the welding head in correct location relative to the work. The bracket 41 is retained in either of two positions 180 degrees apart by a spring-loaded latch 60 released by a handle 65 when the direction of welding is to be reversed. The frame 66 is resiliently and floatingly carried on a pair of rods 67 secured to the boom 71, so allowing transverse movement of the welding head 40. Welding electrode reels are carried by lugs 54 secured to the shaft 42. The flux nozzle 130 has an insulated covering 134 adjacent the electrodes and is carried by a bracket 127 supported by and adjustable about the pivot of the guide wheel 125. The nozzle 130 has a flared outlet and is connected by a readily removable hose 137 to a hopper 135 on the boom 71. The flux is of particle size within the range 30 X 150 mesh to 50 X 150 mesh (United States sieve series).
Patent GB-904670-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B75/02
Filed: 1959-11-24
Abstract: 904,670. Multi-cylinder two-stroke engines. SINCOCKS, A. H. Feb. 7, 1961 [Nov. 24, 1959; Sept. 6, 1960], Nos. 39767/59 and 30675/60. Class 7(2) Each cylinder B1 is scavenged and charged from another crankcase A3 via a duct M1 throughout the open period of the corresponding transfer port H1. As shown, the cylinders operate at 120 degrees intervals and the residue of the filling of each crankcase is transferred to its own cylinder by a duct L3. In a modification, there are two opposed sets, each of three cylinders in line, the cylinders operating at 60 degrees intervals. The cylinders may be horizontal, and may operate by compression ignition, or use spark plugs F1 or incandescent ignition devices, together with liquid fuel injection or a carburetter. The first Provisional Specification refers to the use of rotary crankcase inlet valves and the second Provisional Specification describes an engine in which one cylinder is a pump cylinder only.
Patent GB-856115-A (GB)
Title: Improvement in mobile rock drill rigs
IPC: E21B7/02
Filed: 1957-03-19
Abstract: 856,115. Percussive tools. JOY MANUFACTURING CO. March 19, 1957 [April 3, 1956], No. 40065/58. Divided out of 856,114. Class 124. A mobile base for a drilling tool comprises spaced apart elongated side frames, a boom frame of inverted U-shape, the spaced apart legs of which are pivotllay mounted on the inner sides of the side frames so that the boom frame may swing in upright planes and the side frames may tilt in upright planes about the pivots, and means connecting the side frames and the boom frame for swinging the latter about the pivots and arranged to provide a wide open space longitudinally through the centre of the base when the boom frame is in the upright position. As shown, two side frames 6 having endless tracks 7 are pivotally connected at 10 to a boom frame comprising two tubular legs 14 and a tubular cross bar 15. Fluid operated self-locking jacks 26 are pivotally connected at one end to brackets 25 on the side frames and at the other end are pivotally connected to lugs 31 on brackets 32 at the outer ends of the legs 14. The base may be propelled by fluid operated motors and the jacks may also be fluid operated.
Patent GB-1390307-A (GB)
Title: Preparation of coumarin or an alkylated coumarin and a corres ponding dihydrocoumarin
IPC: C07D311/08
Filed: 1973-08-29
Abstract: 1390307 Coumarin and dihydrocoumarin or alkylated derivatives thereof STAMICARBON BV 29 Aug 1973 [31 Aug 1972] 40585/73 Heading C2C A process for the preparation of coumarin or an alkylated coumarin together with a corresponding dihydrocoumarin comprises dehydrogenating a lactone of general formula where R 1  to R 6  are the same or different and are hydrogen or C 1 -C 5  alkyl, provided that the total number of carbon atoms in the R groups is not more than 10, with a dehydrogenation catalyst such as palladium or carbon, in the liquid phase, and with the reaction temperature at the start of the dehydrogenation in the range 200 to 375 C.
Patent GB-1441443-A (GB)
Title: Data selecting apparatus
IPC: G06K17/00
Filed: 1973-08-29
Abstract: 1441443 Optical projection apparatus ELECTRICITE DE FRANCE-SERVICE NATIONAL 29 Aug 1973 [3 Aug 1972] 40621/73 Heading G2J [Also in Division G4] Record cards having a matrix of locations with each location containing specific data are contained in a box in a selector. The selector carries three indicator tracks on one of which is movably mounted an indicator knob 36 coupled to the box such that when the knob is opposite an address H a card 16 in the box 14 having an address H is above an ejector device. The ejector device contains a plate 40 coupled by a flexible link 44 to a knob 48 movable on an indicator track such that when the knob is opposite an address e.g. E the row on the card having a corresponding address is situated in a reading zone. A third knob 56 is coupled by rack and pinions to the read mechanism to position the reader opposite a location in the specified row which corresponds to the indicated address on the track. The data on the card is displayed on screen 26.
Patent GB-1154649-A (GB)
Title: Improvements in Transmission Apparatus for Teleprinters.
Inventor: CUVELIER JEAN
IPC: H04L27/26
Filed: 1967-09-06
Abstract: 1,154,649. Telegraphy. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. 6 Sept., 1967 [7 Sept., 1966], No. 40765/67. Heading H4P. In a telegraph system each serial-bit character in 5-bit code is converted to two successive frequencies selected from twelve, the two frequencies being transmitted and converted to the 5-bit code at the receiver. At the transmitter the serial-bit data passes to five stores enabled successively, some of the stores being reset prior to input of the next character. The receiver includes stores and some of these are reset prior to reception of the next character. Transmitter.-A serial bit-5 character preceded by a start bit is fed to five AND gates. The start bit enables a counter fed by clock pulses, the counter's parallel output feeding a gating circuit which enables the AND gates successively and then inhibits the counter. The AND gates feed pulses to five respective first stores. Of the parallel output from the stores, bits 3-5 feed a first resonant reed code converter which, when enabled by the gating circuit, gives a frequency, chosen from eight, which represents the 3-bit combination. Bits 1 and 2 are read in to second stores and the corresponding first stores are reset at a point during the period in which the first converter is enabled: this point precedes reception of the next character so that the first two bits of that character can be read in to the first stores. When the first converter is no longer enabled the corresponding three first stores are reset, ready to receive the last three bits of the next character, and a second converter, fed by the second stores is enabled and generates a frequency chosen from four until the first converter is again enabled. The converter outputs pass via an OR gate to the transmission channel. A special frequency is transmitted if the input data ceases for a set time. Receiver.-The two successive frequencies pass to a resonant reed circuit which energizes successively two of twelve lines corresponding to the possible frequencies. The lines feed first and second converters which generate corresponding 3-bit and 2-bit parallel signals which together represent the original 5-bit character. The 2-bit signal is stored in a first store and the 3-bit signal in a second store. When the second converter has received an input it triggers a gating circuit which is fed by a counter fed by clock pulses and also reads out the second store to a third and resets the second. Subsequently, and prior to the reception of the next two frequencies, the third store is read out to a fourth and the third reset. Next the two bits in the first store and then the three bits in the fourth store are read out sequentially to an OR gate which feeds the 5-bit signal to the output printer.