baber/WOPTO huggingface dataset:
Patent GB-859929-A (GB)
Title: Compressor
IPC: F25B31/02
Filed: 1958-09-19
Abstract: 859,929. Compressors. CARRIER CORPORATION. Sept. 19, 1958 [Oct. 3, 1957], No. 30095/58. Class 8(1). The crankcase 14 of a hermetically sealed motor driven compressor comprising pistons 20, 21 reciprocated in cylinders 19, 20 by the eccentric portion 52 of a vertical crankshaft 30 is in open communication with an oil sump 76 through an aperture 121 in the bottom of a shell 8 within the compressor casing 4, 5 and the oil sump is open to the motor compartment 13 provided with a suction inlet 63 ; the pressure difference between spaces 14, 13 sending to force oil from the crankcase into an annular space 80 between the inner shell 8 and the casing 4, 5. In operation refrigerant gas entering through inlet 63 traverses an annular space between the motor stator 57 and a cylinder block flange 16 to cylinder inlet ports 45 and through valve assemblies 31, 32. Compressed gas is muffled in a discharge chamber 41 and is delivered through a duct 42 to a line 90 leading to condenser 91 and evaporator 94 of a conventional refrigeration system and back to the inlet 63. Oil is drawn from the sump 76 through an opening 67 in a thrust bearing 66 by a pump 68 rotated by the shaft 30 and is forced through radial bores 69 to an annular space 71 leading to a by-pass filter 73 into the crankcase 14. The space 71 also leads to a vertical shaft bore 70 leading to the various bearings of the compressors. Specifications 859,926, 859,927 and 859,928 are referred to.
Patent GB-520345-A (GB)
Title: Improvements in the softening of textile fibres, yarns and fabrics
IPC: D06M13/402
Filed: 1938-10-18
Abstract: 520,345. Treating textiles. KRITCHEVSKY, W. Oct. 18, 1938, No. 30180. Convention date, Oct. 25, 1937. [Class 15 (ii)] Cellulosic materials and synthetic fibres are softened in an aqueous bath containing 0.001 to 0.05 per cent. of a condensation product of an alkylolamine and a higher fatty acid of six or more carbon atoms or an ester, anhydride, or acid halide thereof, which has been after-treated with an alkylating, arylating, or aralkylating agent. The condensation product is preferably formed by the condensation of a higher fatty acid with from ¢ to 3 mols. of an alkylolamine and after-treatment with not more than 1 mol. of an alkylating agent, and the temperature of the aqueous bath may be from 30C. to 100C. and preferably from 35C to 60C. In an example viscose yarn is treated for 4 mins. at 50-80C. with an aqueous solution containing 0.003 per cent. of a condensation product of 2 mols. diethanolamine and 1 mol. of stearic acid after-treated with 1 mol. of dimethylsulphate. In other examples, cellulose acetate staple fibres and cotton sheeting are referred to as materials treated, and palmitic and arachidic acids are referred to as the higher fatty acids. The softening treatment does not affect the shade or light fastness of various direct dyes referred to, and, it also reduces static charges. U.S.A. Specification 2,096,749 is referred to.
Patent GB-871067-A (GB)
Title: Motion picture camera
IPC: G03B17/08
Filed: 1957-09-26
Abstract: 871,067. Kinematograph cameras. HANDLER, A., and VOCKENHUBER, K. Sept 26, 1957 [Sept. 28, 1956], No. 30199/57. Class 97(1 ) A camera with a built-in exposure meter has an adjusting device which ensures that the speed of the film in use is taken into account during exposure measurement, the adjusting device having a manually movable setting member within the camera and accessible when loading with film, the dial which shows the setting being concentric with a spool spindle. In the form shown a knob 2 is rotated to drive, through gearing 3, 4, a dial and to set the dial in accordance with film speed. The dial is visible through a window 6 but is covered when the spool is in place. The knob 2 also rotates a screw 8 to move a reference mark 9 in the viewfinder field 11. In use, the exposure is adjusted until the exposure meter pointer is aligned with the mark 9.
Patent GB-874736-A (GB)
Title: Improvements in bed-settees, studio couches and like articles of furniture
Inventor: REBAK MAURICE
IPC: A47C17/16
Filed: 1958-09-22
Abstract: 874,736. Bed settees &c. O-SO-KO-SI UPHOLSTERY (1939) Ltd. July 21, 1959 [Sept. 22, 1958], No. 30227/58. Class 52(2). In a bedsettee having a base 10 and pivotal back-rest 11 carried by members 13 pivoted to the base at 12, a fixed toothed rack 17 is mounted on the settee base and a rider 16 is slidably mounted on the rack, its lower end having a cam slot 18 co-operating with a pin 19 on a link 15 pivoted to a member 13 and formed with a pointed end 20 which can engage the teeth 22 of rack 17 and act as a pawl under the influence of a leaf spring 23. A spring 25 frictionally engaging the top surface of the rack 17 prevents movement of the rider 16 when pin 19 moves in the cam slot but allows movement when the pin acts on the edge of the slot in a horizontal direction. To change the position of the backrest it is brought into the vertical position so that end 20 engages the plain part of the rack; the backrest is then lowered to the desired position and lifted slightly to bring pin 19 backward along upper edge 28 of the slot and allow the pawl 20 to enter the gap between two teeth.
Patent GB-365073-A (GB)
Title: Improvements in and relating to cathode-ray compasses and clinometers
Filed: 1930-10-09
Abstract: 365,073. Combined compasses and clinometers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 9, 1930, No. 30267. Convention date, Oct. 9, 1929. [Class 97 (ii).] A compass and clinometer comprises a cathode-ray tube pivoted on an axis perpendicular to the axis of projection of the ray, the deflection due to the earth's magnetic field indicating both the inclination to the horizontal of the axis of suspension of the tube, and the orientation. An instrument to indicate the orientation and inclinations to two horizontal axes, comprising two such cathode-ray tubes pivoted to swing about mutually inclined axes is shown in Fig. 5. The lenses 3, 4 in conjunction with the prisms 5, 6 produce concentrically disposed and different sized images of the luminescent screens of the tubes 1, 2 upon the screen 9, as shown in Fig. 6, on which the two points of light 7, 8 each indicate the inclination along one axis and the course. The instrument may be arranged as a remote indicator by the disposition of contacts in the tube associated with separate external ciruits. Specification 360,508, [Group XXXVI], is referred to.
Patent GB-435354-A (GB)
Title: Improvements in and relating to buttons
IPC: A44B1/24
Filed: 1934-10-22
Abstract: 435,354. Buttons. CAVICCHI, A. A., Arlington, Massachusetts, U.S.A. Oct. 22, 1934, No. 30271. [Class 43] A hollow button, formed by a continuous series of operations, has a flat circular back 14, lying over the concave face of a circular concavo-convex front 13, being joined thereto by a neck 15, and held in position by a diametrically opposed lug 16, a separate shank being passed through a hole in the back 14 and prevented from rotating by flats on its head 19, engaging parallel projections 18 formed on the back. The eye 23 of the shank is of spiral form, having an offset end 24, to permit of easy insertion of a thread loop, or the like. The head 19 may be solid, or formed by bending the shank, as in Fig. 9.
Patent GB-302028-A (GB)
Title: Improvements in or relating to endless tracks suitable for use with six wheeled motor road vehicles
IPC: B62D55/04
Filed: 1927-11-11
Abstract: 302,028. Thornycroft & Co., Ltd., J. I., and Endacott, N. Nov. 11, 1927. Endless-track vehicles.-An endless track for use with single tyres on the two rear driving wheels on each side of a six-wheeled vehicle comprises links 8 arranged at each side of the track, jointed together and to tread shoes 1 by pivot pins 9 each of which connects the adjacent ends of two links to a shoe, each shoe being formed on its outer side with an effective ground-engaging surface and on its inner side with surfaces adapted to engage the tread and the side walls of the types 2 of the vehicle wheels. In the construction shown each shoe is formed with one or more ground-engaging ribs 3, with two ribs 4 engaging the tyre tread and with side horns 5 engaging the walls of the tyre. The pivot pins 9 of the links are either in the same plane as the tread-engaging surface of the shoe, as shown, or they may be arranged nearer toward the inner side of the shoe by a distance not exceeding <1>/40th of the diameter of the tyre. The dimension X is wider than the tyre with which the shoe is used, the excess being within the limits of 10 per cent to 22 per cent of the width. The ends of the track are adjustably connected together by means of a double link 8<b> having several holes for adjustment.
Patent GB-1048566-A (GB)
Title: Improvements in or relating to optical masers
IPC: H01S3/082
Filed: 1963-08-01
Abstract: 1,048,566. Lasers. WESTERN ELECTRIC CO. Inc. Aug. 1, 1963 [Aug. 27, 1962], No. 30553/63. Addition to 985,204. Heading H3B. In a laser in which the negative temperature medium is disposed within an optical cavity resonator defined by a first reflector having a concave spherical shape and a second reflector partially transmissive to the stimulated light, an auxiliary reflector is positioned adjacent the optical cavity and axially spaced from the second reflector. The system of Fig. 1 comprises a gas laser including tube 18 having end surfaces 19, 21 orientated substantially at Brewster's angle to the light beam path therethrough, and containing a helium-neon gas mixture excited by R.F. source 22. The optical cavity resonator 13 is formed by concave spherical reflectors 11, 12, the surface being partially transmissive to the light at the operating frequency of the device and supported on a transparent member 14 the surface 16 of which is provided with an anti-reflection coating. Positioned adjacent the cavity 13 is an auxiliary concave spherical reflective surface 17 which has a radius of curvature equal to that of the reflector 11 and is arranged to be confocal therewith. An iris or diaphragm 27 limits the effective aperture of the reflector 11 and so prevents oscillation in all but the fundamental axial modes in the cavity 13. The effect of the auxiliary reflector 17 is to increase the losses of modes removed from the centre of the laser emission line and if it is positioned confocal with the reflector 11 and the optical cavity 13 so as to satisfy two stability criteria for optical resonators, then all three reflectors will fit surfaces of constant phase of a fundamental longitudinal mode of the confocal cavity. It is stated that the reflectors 11, 12 may be included within the tube 18 and a solid state laser instead of a gas laser may be employed.
Patent GB-438826-A (GB)
Title: Artificial fishing bait
IPC: A01K85/12
Filed: 1934-10-25
Abstract: The tubular structure of an ichthyoidal-shaped lure is formed by raising and closing a metal blank so that the opposite longitudinal edges abut and can be brazed.  First one side of the blank is raised and then the other.  The edges of the trough thus formed are then brought nearer and finally closed.  The structure is pierced at appropriate angles to receive the ends of separate side plates which impart a rotary motion to the lure.
Patent GB-883588-A (GB)
Title: Improvements in a.c. operated electro-mechanical devices
IPC: H01H51/30
Filed: 1957-09-30
Abstract: 883,588. Electromagnets. HARVEY ELECTRONICS Ltd., and HARVEY, J. P. Sept. 15, 1958 [Sept. 30, 1957], No. 30585/57. Class 35. An A.C. plungertype electromagnet has a magnetic stop member 4 with a copper shading ring 15 and a coaxial hole 16 or circular recess which is said to increase the pull and reduce chattering. The plunger 7 slides in a non-ferrous sleeve 6 which is tapered at one end 13 to secure it to the stop. The electromagnet has a U- shaped iron frame 1 closed by an end plate, not shown.
Patent GB-1462579-A (GB)
Title: Production of highly dispersed silicon dioxide
IPC: C01B33/18
Filed: 1975-07-22
Abstract: 1462579 Highly disperse silica LONZA Ltd 22 July 1975 [26 July 1974] 30604/75 Heading C1A [Also in Division F4] In a process for the production of highly dispersed silicon dioxide by the reaction of a material consisting of or containing silicon dioxide with a reducing agent at an elevated temperature with the formation of a silicon monoxide-containing gas stream, subsequent cooling of the gas stream in the presence of an oxidising gas and separation from the residual gas of the highly dispersed silicon dioxide resulting by cooling, a stream of hot gas from a plasma burner is passed axially into a hollow cylindrically-shaped chamber arranged horizontally with openings in both end faces thereof in the axis of rotation, said hollow cylindrically-shaped chamber being rotated about its longitudinal axis, material consisting of or containing silicon dioxide is introduced at the burner end of the rotating hollow cylindrically-shaped chamber and impelled by the centrifugal force on to the inner walls of said chamber and thereby melted and reduced to silicon monoxide which evaporates from the melt into the gas stream, the gas stream, which contains silicon monoxide and entrained particles of silicon dioxide, is subsequently introduced tangentially through an inlet into one side of at least one further non- rotating hollow cylindrically-shaped chamber arranged vertically to the longitudinal axis of the rotating chamber so that a whirling movement results and complete reaction of the entrained silicon dioxide takes place, the gas stream is allowed to flow from the reactor through at least one tangential outlet on the side of the non-rotating hollow cylindricallyshaped chamber, the outlet being above or below and on the opposite side to the inlet, whereafter the gas stream is quenched and re-oxidized.
Patent GB-934801-A (GB)
Title: Steroid compounds
IPC: C07J5/00
Filed: 1959-09-08
Abstract: The invention comprises steroids of the general formula <FORM:0934801/IV(a)/1> wherein R represents an alkyl radical and R1 represents a hydrogen atom or an acyl radical and the dotted line indicates that a double bond may be present in the 1(2) position, and the corresponding 17a ,20; 20,21-bismethylenedioxy derivatives and 6,16a -dialkyl-3b -hydroxy and acetoxy-17a ,20;20,21-bismethylenedioxy-5-pregnenes; a process that comprises reacting a mixture of isomers of a 6#x,16a -dialkyl-3,5-cyclo-6#x-hydroxy-17a , 20;20,21-bismethylenedioxy-pregnane with sulphuric acid and an organic carboxylic acid to form a 6,16a -dialkyl-3b -acyloxy-17a , 20;20,21-bismethylenedioxy-5-pregnene (this process may be modified in that the starting material is prepared by reacting a 16a -alkyl-5,6-dihalo-3b , 17a -dihydroxy- 20-keto-21-acyloxy-pregnane with chromous halide to form a 16a -alkyl-3b ,17a -dihydroxy-20-keto-21-acyloxy-5-pregnene, reacting this compound with p-toluenesulphonyl halide to form a 16a -alkyl-3b -p-toluenesulphonyloxy- 17a -hydroxy-20-keto-21 -acyloxy-5-pregnene, reacting this compound with methyl ethyl ketone and potassium acetate to form a 16a -alkyl-3,5-cyclo-6b , 17a -dihydroxy- 20-keto- 21-acyloxy-pregnane, oxidising this compound with chromium trioxide to form 16a -alkyl-3,5-cyclo-17a -hydroxy-6,20-diketo- 21-acyloxy-pregnane, hydrolysing this compound with sodium methoxide to form 16a -alkyl-3,5-cyclo-17a ,21-dihydroxy-6,20-diketo-pregnane, reacting this compound with formaldehyde to form 16a -alkyl-3,5-cyclo-17a ,20;20, 21- bismethylenedioxy-6-keto-pregnane, and treating this compound with an alkyl magnesium halide); a process for the preparation of 6,16a -dialkyl-3b -hydroxy-17a ,20;20, 21- bismethylenedioxy-5-pregnene by hydrolysing the corresponding 3b -acyloxy compound; a process for the preparation of 6a ,16a -dialkyl-17a ,20;20, 21-bismethylenedioxy-3-keto-4-pregnene by reacting 6,16a -dialkyl- 3b -hydroxy- 17a ,20;20, 21-bismethylenedioxy-5-pregnene with aluminium isopropoxide and cyclohexanone; a process for the preparation of 6a ,16a -dialkyl-17a ,21-dihydroxy-3,20-diketo-4-pregnene by treating the corresponding 17a ,20;20,21-bismethylenedioxy compound with acid; and a process for the preparation of 6a ,16a -dialkyl-17a ,21-dihydroxy-3,20-diketo-1,4-pregnadiene or its 21-acylate by treating the corresponding 4-pregnene or its 21-acylate with selenium dioxide.  Specifications 928,226 and 934,802 are referred to.
Patent GB-656113-A (GB)
Title: A slide rule to convert parallax observations on stereoscopic pairs of air photographs to ground elevations
IPC: G06G1/00
Filed: 1948-11-26
Abstract: 656,113. Calculating-apparatus. READING, H. G. Nov. 26, 1948, No. 30690. [Class 106 (i)] A photogrammetric slide rule, for computing ground elevations from parallax measurements made on stereo pairs of vertical air photographs, comprises a stock 1 (Fig. 1), on which is marked a linear scale 2 of parallax values in millimetres, and a slide (Fig. 2), marked off with a scale 5 of ground heights calculated from the formula : H-h=fB/p, where H=the height of the aircraft and h that of a point under observation from a fixed datum, f=the camera objective focal-length, B=the distance between consecutive exposure positions and p=the measured parallax of a point under observation. The main graduations of this height scale are at intervals of 100 feet but are given no absolute values ; these are determined at the appropriate part of the scale and under the conditions concerned when using the instrument. The ground elevation difference for 10 mm. parallax difference under the conditions concerned is first calculated from the above formula and the slide moved until the " 0 " and " 10 " graduations on the body scale cover this value on the height scale. A strip of paper is then secured to the slide by clips 9 and values of ground elevation from " 0 " to the calculated value are marked on it opposite the main graduations of the slide lying-between the " 0 " and " 10 " of the body parallax scale. The slide is then adjusted so that a known elevation in a stereo overlap under examination reads the observed parallax on the body scale. All other elevations in the stereo overlap can then be read on the paper strip scale against the body parallax scale. The rule shown has two interchangeable slides, each with four height scales on its four edges covering all required values in eight overlapping ranges. The slides may have prepared plastic writing surfaces to obviate the use of paper strips.
Patent GB-1081030-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B37/04
Filed: 1966-07-08
Abstract: 1,081,030. Sewing machines. DURKOPP WERKE A.G. July 8, 1966 [July 23, 1965], No. 30705/66. Heading D1G. A sewing machine comprises a work-feeding clamp coupled to a pattern template movable about co-ordinate axes by driving means, edge-trimming means movable about the needle axis in accordance with the pattern, and a torque amplifier comprised in the transmission between pattern-sensing means and means for moving the edge-trimming means. An edge-trimming knife blade 8 is fixed to a shaft 12 journalled in the machine head 1 co-axially with the needle bar. A co-operating blade 7, pressed against blade 8 by a spring 13 and slidably mounted on shaft 12, has a hooked upper end 22 slidably engaging an arcuate arm 21<1> concentric with shaft 12 and rigid with a vertical rod (20) coupled for reciprocation to a motor (14) mounted on head 1. A radial arm 12", rigid with shaft 12, carries a pulley 24<1> turnable by a bell 24 for pivoting shaft 12. A work clamp 2, supported by a table 28, is secured to a pattern template 3 carrying rollers 5 movable in a channel member 85. Each end of the latter carries a depending arm 81<1> which passes through a slot in table 28 perpendicular to member 85 and engages the upper end of a link 86 pivoted at its lower end about an axis parallel to member 85. A structure 32, secured by bolts 36 and spacers 37 to the undersurface of table 28, journals a shaft 30 driven by a belt 29. Shaft 30 is coupled by gears 42, 43 and friction discs 47, 47<1> to the lower end of a shaft 27. The upper end of the latter passes through a pattern slot 3<1> in template 3 and carries a gear 26 meshing with rack pins 25 carried by template 3 parallel to slot 3<1>. Two pins 4, passing through slot 3<1> one on each side of shaft 27, are carried by a plate 80 slidable in a block 81 fixed to the upper end of a shaft 39 which journals shaft 27. Sleeves 64 and 65, journalled on shaft 39, abut at their inner ends a collar 63 rigid with shaft 39. The outer ends of sleeves 64, 65 are coupled by respective gearing 55, 56 with shaft 30. A collar 66<1>, rigid with collar 63, is secured to the inner ends of oppositely-handed spiral springs 69 and 70 mounted on sleeves 64 and 65 respectively. The outer ends of the springs are secured to respective gears 71 and 72 journalled on sleeves 64 and 65 respectively. Gear 71 meshes with a gear 78 rigid with a shaft 75, and gear 72 meshes with a gear 79 rigid with shaft 75. The latter is coupled via a belt 23 and shaft (76) with belt 24. The arrangement is thereby such that sleeves 64 and 65 rotate continuously, and shaft 27 rotates continuously to feed the work clamp past the stitching point, while variations in the inclination of the pattern slot 3<1> serve to turn shaft 39 for tightening either spring 69 or 70 on its respective sleeve 64 or 65, whereby shaft 75 is positively driven to transmit corresponding turning of the knife-carrying shaft 12.
Patent GB-1425203-A (GB)
Title: Cold cathode electric discharge devices
IPC: H01J17/06
Filed: 1973-06-28
Abstract: 1425203 Electrode materials CLAUDGEN Ltd 24 May 1974 [28 June 1973] 30762/73 Heading H1D In a cold cathode electric discharge lamp, at least one electrode in the form of a hollow metal body carries on at least part of its surface an electron-emissive coating consisting essentially of lanthanum hexa boride. Where A.C. is used, both electrodes are constructed thus. The cathodes may be formed as hollow, open-ended cylinders and may be coated on the inside, on the outside, or on both sides. The electrodes form part of a lamp with a glass tube filled with A, with or without Hg vapour, at 5-10 torr pressure. A detailed example is given wherein the electrodes are coated with a suspension of powdered lanthanum hexa boride and dried and assembled into a tube which is filled with A at 5 torr and 440 mg Hg.
Patent GB-934958-A (GB)
Title: Improvements in or relating to straps
Inventor: WHYTE HAROLD ROSS
IPC: B65D63/10
Filed: 1959-09-10
Abstract: 934,958. Cable clips. HELLERMANN Ltd. Aug. 22, 1960 [Sept. 10, 1959], No. 30932/59. Class 36. [Also in Group XXV] A strap for cables or other elongate elements comprises an elongate bendable tail part 13 which has a number of integral protrusions 14 spaced apart from one another along its length, and an eye part 15 secured to the tail part and having a non-rectangular hole, a first portion 17 of which hole is sufficiently large to permit passage therethrough of the tail part but not of the protrusions themselves, and a second portion 16 of which hole lying nearer the tail part than the first part of the hole is sufficiently large to permit passage of the protrusions therethrough without twisting the tail part, the arrangement being such that the tail part between the protrusions can pass from one portion of the hole to the other portion. Between the two hole portions 16, 17 is a throat 18 and the resiliency of the material from which the strap is made (e.g. polyethylene) is sufficient to permit passage of the tail parts between the protrusions.