baber/WOPTO huggingface dataset:
Patent GB-1248702-A (GB)
Title: Method for making a sealing member for an antifriction bearing
IPC: F16C33/78
Filed: 1969-07-01
Abstract: 1,248,702. Making sealing members; jointing. TEXTRON Inc. 1 July, 1969 [1 July, 1968], No. 33236/69. Headings B3A and B3V. [Also in Division F2] A method of making a sealing member 17 for an anti-friction bearing comprises forming an annular dish-shaped cap 18 having an annular lip 22 and a radially inwardly extending apertured flange 24 with the flange forming the bottom of the dish, guiding by the annular lip 22 an adherent sealing diaphragm 20 of flexible lubricant-resisting material over the aperture for adherent contact with the bottom of the dish, bonding the diaphragm 20 to the flange 24, and punching a hole in the diaphragm inwardly of the flange aperture and concentric with the annular lip to form a seal insert assembly. The diaphragm is made of a polyolefin material such as polytetrafluoroethylene (TFE) or fluoroethylene propylene (FEP) and is prepared forbonding by etching one side with sodium hydroxide after which a polyimide or phenolic adhesive is applied to the etched side. To partially cure the adhesive covered sheets a temperature of 250 F. for 15 minutes is required for the polyimide coated sheet and a temperature of 200 F. is required for the phenolic coated sheet. To bond a sheet of FEP to cap 18 no adhesive is required, the temperature is raised to 550-580 F. at a pressure of about 10 p.s.i. for the time required to melt the surface of the FEP whereupon the temperature is lowered to about 500 F. while maintaining the pressure. To assemble the seals, discs 30 are punched out of the sheet and the cap 18 placed with the front surface of the flange 24 resting upon a raised annular table 27. The disc 30 is then loosely placed in the dish portion, adhesive side down, relying on flare walls 25 to pilot the disc 30 to a seated position on flange 24. A die part 28 is applied so that the portions of disc 30 overlapping the flange 24 are bonded together. To finally cure and bond the disc to the cap the polyimide adhesive is heated to a temperature of 350 F. at a pressure of about 200 p.s.i. for 15 minutes. At this point the disc 30 is sufficiently bonded to the cap 18 to permit punching of the hole by a punch and die set. Final curing is effected at 500 F. without pressure. Alternatively where a partially cured phenolic adhesive is used the bonding step is accompanied by a pressure of 200 p.s.i. at a temperature of 350 F. for 15-30 minutes.
Patent GB-914468-A (GB)
Title: Improvements in or relating to printing machinery
IPC: B65H29/24
Filed: 1960-09-28
Abstract: 914,468. Delivering sheets. GIFFORD, G. W. Sept. 11, 1961 [Sept. 28, 1960], No. 33259/60. Class 100 (1). A delivery enclosure for a sheet-fed printing machine is connected to or is adapted to be connected to means for applying suction to its interior so as to facilitate the fall of the sheets into the enclosure from a position above the enclosure. As shown, sheets 15 are delivered from a rotary printing machine by a gripper chain 13 to an enclosure 10 formed by four vertical side members 14. The member 14 shown on the right of the Figure is hollow and is perforated on its inner face. This member is connected by a pipe 16 to a suction pump 17 so that air is drawn from the interior of the enclosure 10. The fall of the sheets into the enclosure may be assisted by downward directed blasts of air which impinge on the upper sides of the sheets. One member of each parallel pair of side members 14 may be capable of a short reciprocatory movement in a direction perpendicular to its length in order to jog the stacked sheets.
Patent GB-1084771-A (GB)
Title: Improvements in shuttles for looms
IPC: D03J5/24
Filed: 1964-08-14
Abstract: 1,084,771. Loom shuttles. R. S. MAYNARD. Aug. 12, 1965 [Aug. 14, 1964], No. 33324/64. Heading D1E. A shuttle 5 has a weft tensioner comprised of loops of nylon 9 attached to a lining 10. The loops 9 may be one continuous spiral.
Patent GB-521505-A (GB)
Title: Improvements in and relating to dress fastenings
IPC: A41F11/04
Filed: 1938-11-17
Abstract: 521,505. Dress fastenings for overalls &c. HUGHES, H. T. Nov. 17, 1938, No. 33409. [Class 43] In a dress fastening of the kind employed for securing the shoulder straps of workmen's overalls, a button head his secured in the loop part e of a buckle or slide a of known form to engage with a buttonhole in the garment. Preferably, the shank g of the button is riveted over a washer i, Fig. 3, which may be formed with lateral wings.
Patent GB-852305-A (GB)
Title: Electro-hydraulic vibration machine
Inventor: STEVENS PAUL MORTON
IPC: F15B21/12
Filed: 1958-10-20
Abstract: 852,305. Reciprocating motors. NORTHROP AIRCRAFT Inc. Oct. 20, 1958, No. 33413/58. Class 35. [Also in Group XXIX] A voice coil 30 for reciprocating the pilot valve 19 of an hydraulic amplifier (Group XXIX) in a system for vibrating aircraft or missiles for test purposes is energised by a signal generator which supplies an A.C. signal or A.C. component at an input point 49 through a coupling impedance 50 to an input summing point 51. The signal passes through a first amplifier 54, an amplifier equaliser 56 and a second amplifier 57 to an output stage 59 connected to the coil 30 which is wound on an aluminium form attached to a diaphragm 31 and operates within a magnetic field produced by a field coil 34 and core 35; the amplifiers may be A.C. or D.C. and are provided with negative feedback circuits 55, 60. Position transducers 42a, 42b, 42c consisting of input coils 44 energised by a 20 k.c. oscillator 61, and output coils 45 which are energised proportional to the distance from a central position of cores 41 attached to the valves 19, 21 and piston 24 of the hydraulic amplifier provide negative feedback which is passed through A.C. amplifiers 62 to demodulators 64 fed with a reference voltage from the oscillator, and through 20 k.c. filters 65 cathode followers 66 and feedback equalisers 67 to the input summing point 51 so that the movement of the piston 24 attached to the load closely follows the shape of the output signal from the generator.
Patent GB-950089-A (GB)
Title: Photographic silver halide emulsions of increased sensitivity
IPC: G03C1/043
Filed: 1960-09-30
Abstract: 7,13-Dithianonadecan -1, 19-diol is prepared by three different methods. The first is by the reaction of 1,5-dibromopentane on 6-thiol-1-hexanol in sodium and methanol, the second is by the reaction of hexamethylene chlorohydrin on 1,5-pentane-dithiol in sodium and methanol, and the third is by the action of ultra-violet light on a mixture of 1,4-pentadiene and 6-mercapto -1- hexanol. These three methods are generally applicable to the preparation of compounds of the general formula: <FORM:0950089/C2/1> wherein m and n are integers from 2 to 10. It is stated that, in a similar manner, compounds of the general formula HO-R (-S-R1)d-S-R-OH may be made, wherein R and R1 are alkylene groups of 2-10 carbon atoms and d is 1, 2 or 3. R and R1 may be branched chain alkylene groups such as methyl-substituted trimethylene and ethyl-substituted tetramethylene. Reference is made to the preparation of 7, 10, 13-trithia-1, 19-nonadecane-diol from the disodium salt of 3-thiapentane-1, 6-dithiol and 7-chloro-n-hexanol.  Specifications 235,211, 541,589, 545,448, 627,814, 636,140, 649,660, 660,012, 680,488, 711,488, 736,922, 739,913, 791,219, 800,108, 873,198, 874,080, 886,722, and 942,932, are referred to.
Patent GB-801821-A (GB)
Title: Improvements in and relating to door catches
Inventor: WEAVER GEOFFREY RICHARD EGERTO
IPC: E05C19/02
Filed: 1954-11-19
Abstract: 801,821. Door catches. HARRISON (BIRMINGHAM), Ltd. Feb. 20, 1956 [Nov. 19, 1954], No. 33601/54. Class 44 A door catch of the kind in which the door can be opened merely by pulling, comprises a latch member formed in two parts 16, 17 mounted for pivotal move ment about an axis parallel to the axis about which the door is hinged, spring means 22 being provided for biasing the two parts away from one another so that, when the door is open, the part 16 projects from a recess in the door 12 or door-post 25 and, when the door is closed, the part 17 projects into and engages a recess in the door-post or door. In the example shown in the drawings, the latch parts 16, 17 are amounted on a pivot 15 extending across a housing 10 let into one edge of the door. When the door is closed the latch part 17 engages in an opening 26 in the door-post 25 and the part 16 is biased by a coil spring 22 surrounding the pin 15 into frictional engagement with a striker plate 27 on the door-post 25. The latch parts 16, 17 are substantially quadrant shape in plan and are cut away to provide for each quadrant a pair of projecting ribs 20, 21 provided with apertures for the pin 15. A leaf spring 28 biases the part 16 in a counter-clockwise direction to the position shown in Fig. 1, while a stop 29 limits the counter - clockwise movement of the latch parts 16, 17.
Patent GB-170510-A (GB)
Title: Improvements in printers' rules
IPC: B41B1/14
Filed: 1920-11-29
Abstract: 170,510. Worledge, A. G. Nov. 29, 1920. Rules.-In order to prevent rules from rising in the forme, they are provided with parallel grooves or serrations A which run obliquely across each side at an approximate angle of 45‹, those in one side being inclined in the opposite direction to those in the other. Specification 12491/11 is referred to.
Patent GB-1442324-A (GB)
Title: Equipment for designing and making costumes
IPC: A41H3/00
Filed: 1972-07-19
Abstract: 1442324 Garment assembly KINCOB Ltd 18 July 1973 [19 July 1972] 33786/72 Heading A3V A kit for use in designing and making garments comprises a set of stencils representing garment parts and a corresponding set of pattern pieces, the stencils and pieces being correspondingly marked. In use, stencils of garment parts of particular style and shape and selected so that a 2-dimensional representation of the design can be drawn. Corresponding pattern pieces are then used in cutting and making up the garment material. Several stencils are formed in a single sheet of translucent plastics, and may include a representation of the human form as well as accessories therefor. The pattern pieces may be sheet of flexible translucent plastics, and may include coloured guide lines for various sizes.
Patent GB-654301-A (GB)
Title: Improvements in or relating to fluid-fuel-fired space heaters for buildings
Inventor: DIETERICHS WILLIAM
IPC: F24C3/00
Filed: 1947-12-22
Abstract: 654,301. Air heating stoves. NORTH THAMES GAS BOARD. Dec. 22, 1947, Nos. 33856/47 and 7888/48. [Class 64(i)] [Also in Group XI] Relates to fluid-fuel-fired space heaters of the kind having a flue casing 14, Fig. 4, which terminates outside the building to be heated and is internally divided into two separate ducts 12, 13 for the flow of air for combustion and combustion products respectively. According to the invention the combustion takes place within a chamber 10 having a sheet metal wall bearing fins 16, 17 and shaped to form a panel heater which is carried by and in spaced relationship to a back plate 19 for securing to the building wall so that the chamber is surrounded by the air to be heated. A detachable cover 20 directs this air, as indicated by arrows T, from an inlet 21 to a louvred outlet 22. Guide vanes in the combustion chamber 10 may equalize the air flow past a number of gas burners 11 which are lit through an open ended compartment 23 closed by a door 24 hinged to the cover 20. The first Provisional Specification describes also a cover having a false top packed with heat insulating material. Specification 508,634, [Group XI], is referred to.
Patent GB-866067-A (GB)
Title: Process for the production of dichlorophosphoric acid esters
IPC: C07F9/14
Filed: 1958-10-22
Abstract: Dichlorophosphoric acid esters of saturated aliphatic monohydric alcohols are obtained by reacting the corresponding alcohol with pyrophosphoryl chloride and separating the dichlorophosphoric acid esters formed by distillation under reduced pressure from the dichlorophosphoric acid formed simultaneously during the esterification.  In carrying out the reaction the pyrophosphoryl chloride is generally first cooled to about -30 to -40 DEG C. before the alcohol is added and reaction is preferably effected at from -30 DEG  to +25 DEG C.  When methyl dichlorophosphate is to be formed the reactants should be used in p  exact equimolar proportion so as to avoid formation of dimethyl chlorophosphate but in the preparation of ethyl dichlorophosphate an excess of ethanol may be used.  In the case of alkanols containing 3 or more carbon atoms it is preferred to use an excess of 50-100% of the alcohol over the stoichiometric amount. Examples are given for the production of methyl-, ethyl-, n-butyl-, n-propyl-, and isopropyldichlorophosphates.
Patent GB-1279349-A (GB)
Title: Photodetector bias control circuit
Inventor: DOBRATZ BURTON EMIL
IPC: G01S7/4861
Filed: 1970-07-13
Abstract: 1279349 Photo detector bias control HUGHES AIRCRAFT CO. 13 July 1970 [22 July 1969] 33903/70 Heading G1A In a detector system using a photo multiplier or photo diode of the avalanche type for ranging i.e. measuring distances, the rate of response to non signal inputs is maintained substantially constant by controlling a bias applied to the photo detector in accordance with the rate of pulses exceeding a threshold level, the latter being determined by a comparison of the pulse integration with a reference voltage after the pulses have been shaped in a mono-stable multivibrator. The circuit may have separate thresholds for the output path and the bias control path. The potential sit point 13 Fig. 1 in the supply line to avalanche diode 10 is controlled by the output from an integrater 22 which output is a function of the difference of effect of the shaped pulse from MV20 and a reference source 24. A shaped pulse from the MV is indicated by an excursion of the input above the threshold, and the duration of a shaped pulse is in excess of a ranging period when used in a radar system. Excursions are ineffective during a pulse.
Patent GB-842892-A (GB)
Title: Glass sealing
IPC: H01J5/20
Filed: 1956-11-07
Abstract: Aluminium or aluminium alloy foil is treated to remove surface oxidation before use by etching in a solution of from 10 to 15% nitric acid and 5 to 15% hydrofluoric acid.  The foil is then used to unite glass, or glass and metal parts by heat and pressure before appreciable surface oxidation can again occur.
Patent GB-1213411-A (GB)
Title: Process for the catalytic hydrogenation of polymers
IPC: C08F8/04
Filed: 1968-07-17
Abstract: 1,213,411. Polymer hydrogenation using a soluble catalyst. BRIDGESTONE TIRE K.K. 12 July, 1968 [20 July, 19671, No. 34140/68. Heading C3P. In a process for the catalytic hydrogenation of a polymer a solution of the polymer is reacted with hydrogen in the presence of a soluble catalyst obtained by mixing (1) at least one organic compound of Ni, Co or Fe wherein each organic radical is attached to the metal through an oxygen atom with (2) at least one organometallic compound having the formula MR n  wherein M=Li or Mg, R=C 1-20  alkyl and n=valency. The hydrogenation is preferably carried out in a viscous solution such as polymer solutions of viscosity 0À05 to 5000 poise and concentrations of 1 to 30 per cent by weight, and selective hydrogenation of olefinically unsaturated bonds may be effected under mild conditions of temperature, 0‹ to 120‹ C., and H 2  pressure, less than 10 atmospheres, although aromatic nuclei may be hydrogenated under more severe conditions. Suitable polymers are diene polymers and polymers used in the examples are polybutadiene and styrenebutadiene random copolymers. Solvents which may be used for dissolving the polymer include saturated hydrocarbons, aromatics and dilorinated aromatics, as well as ether.
Patent GB-929367-A (GB)
Title: Improved primary cell
IPC: H01M2/02
Filed: 1961-09-25
Abstract: 929,367. Primary cells. MALLORY BATTERIES Ltd. Sept. 25, 1961 [Oct. 6, 1960], No. 34198/61. Class 53. A primary cell of the kind having an open-ended metal cup 1 (preferably of stainless steel), a depolarized pellet 4, a spacer 5, 6, a zinc anode 8, an insulating member 9 and a plastic grommet 10, utilises a mercuric dioxysulphate depolarizer. The cathode may be of titanium. The cell is completely sealed and is intended for electric watches. Specification 798,449 is referred to.
Patent GB-465289-A (GB)
Title: High-voltage condenser
IPC: H01G13/04
Filed: 1935-12-10
Abstract: 465,289. Condensers. RADIOAKT.- GES. D. S. LOEWE. Dec. 10, 1935, No. 34206. Convention date, Dec. 11, 1934. [Class 37] In a process for making high-voltage condensers comprising inserting the condenser rolls 1 in a rigid metal pot 2 which will form the final casing, and filling out the spaces with an impregnant under heat and vacuum, a safety spacing of a few millimetres is maintained between the condenser rolls and the casing on all sides and the bottom. Packing members such as 3 are arranged so as to fill out the spaces round the condensers loosely and ribs such as 7, 8 maintain a clearance at the bottom. In Fig. 1a, the pot 2 is shown in a bath of impregnant 10 such as paraffin wax. If wide paper is used for the condenser rolls, projecting from the ends, the ribs 7, 8 may be dispensed with. In condensers treated as described, it is preferred to arrange the terminal connections one at the inner end of one foil and the other at the outer end of the other.
Patent GB-398473-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/38
Filed: 1931-12-10
Abstract: 398,473. Condensers. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Dec. 10, 1931, No. 34259. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 3, 1932]. [Class 38 (ii).] In a rolled electrical condenser the conducting sheets are divided into a number of strips 11, 12, 13, 15, 16, parallel to the length of the strips as wound, the strips being staggered on each side of the separating insulating layer 14 thus forming a series of part capacities from one end of the condenser, axially, to the other. The external connections are made to the strips 12, 13, and these may be connected to the metal end-caps 31, 32 of a bakelite container 30 fitted with a perforated wall 33 to divide it into a compartment filled with oil for the condenser 18 and an expansion chamber. The complete elements may be stacked in series. In modifications, the containing casings may be made of porcelain, glass, &c. with sheds, and further may each contain two condenser windings 18. In this case the windings are connected together by super-position and to this end the terminal strips 12, 13 are of such a width that they extend laterally beyond the insulating strips 10, 14, 17 as indicated in dotted lines in Fig. 1. The broader strips 11, 15, 16 may be replaced by two narrower strips connected at intervals in their length.
Patent GB-1192449-A (GB)
Title: Improvements relating to Optical Pattern Recognition Systems
Inventor: ACKROYD JOHN
IPC: G06V10/88
Filed: 1967-07-26
Abstract: 1,192,449. Optical pattern recognition. BRITISH AIRCRAFT CORP. Ltd. Oct. 21, 1968 [July 26, 1967], No.34374/67. Heading G2J. An optical pattern matched filter recognition system includes a source of coherent light, a transparency of a character or pattern mounted in the object plane of a lens and illuminated by the light source to form the Fourier Transform in the transform plane of the lens, a pre-recorded Fourier transform of a further character or pattern located in the transform plane such that said first transform is superimposed thereon, a second lens imaging light passed through the two transforms on to a screen whereby any correlation between the two characters or patterns is detected as a correlating light spot on the screen, and a mask positioned in the transform plane with cut-out portions spaced from the optical axis of the lens such that only predetermined areas of the transform plane are exposed to the incident light rays, the predetermined areas including the Fourier transform obtained from diffraction of light by predetermined details of the character or pattern which distinguish the character or pattern from other characters or patterns in the same class. The mask may be an opaque plate having the appropriate cut-out in the form of a hole or a slit. It may be used to remove correlations due to film grain in which case the hole is central on the optical axis of the system with a size determined by the focal length of the transform lens, the wavelength of light used and relative size of the film grain and smallest detail of interest. An example is that of recognising an O from a Q' where the mask has the slit over the tail of the Q.
Patent GB-448114-A (GB)
Title: Improvements in or relating to mechanical excavators or other self-propelled vehicles mounted on endless tracks
IPC: E02F9/02
Filed: 1934-11-30
Abstract: 448,114. Endless-track vehicles. RANSOMES & RAPIER, Ltd., Waterside Iron Works, CAMERON, C. M., 12, Norbury Road, and HEATH, A. T., 68, Nacton Road, all in Ipswich. Nov. 30, 1934, No. 34413. [Classes 79 (i) and 79 (v)] An endless-track vehicle or excavator comprises four endless tracks, means for driving through differential gearing the front pair and the rear pair of tracks, and poweroperated steering mechanism arranged to swivel both pairs of tracks through linkage so as to produce the Ackermann steering effect on each pair. In the construction shown, the main vehicle frame A is supported on four tracks B by means of hydraulic cylinders C having plungers C<1> which may serve as steering pivots for the tracks and are provided with forks B<1> on which the track frames are pivoted at B<2>. Liquid may be forced into any of the cylinders C to adjust the loading, and two of the cylinders may be put into communication so as to equalize the load on the two corresponding tracks and to give the effect of a three-point support for the vehicle. The motor (not shown), is mounted on the frame A and drives the tracks through a vertical shaft D, bevel gearing D<1>, E<1>, oppositelyrotating shafts E, differential gears F, and telescopic universally - jointed shafts G. The track forks B<1> are formed with steering arms B<3> connected by links H<2> to bell-cranks H pivoted. at H<1> on the frame, the parts being arranged as shown to swivel the inner track on a curve more than the outer track. The bell-cranks H are connected by links L to nuts K engaging right- and left-handed screw threads formed on a shaft J which can be rotated in either direction from the oppositelyrotating shafts E by means of spur gearing E2, M controlled by a double clutch J<1> splined on the shaft J. Each track unit may comprise two tracks pivoting independently about a horizontal transverse axis, and together about a horizontal longitudinal axis.