baber/WOPTO huggingface dataset:
Patent GB-1391880-A (GB)
Title: Device for centring spectacle lenses with respect to a template and  a graduated scale
IPC: G02C13/00
Filed: 1973-05-29
Abstract: 1391880 Centring lenses for grinding WERNICKE & CO GmbH 29 May 1973 [26 May 1972] 25557/73 Heading B3D [Also in Division G2] Apparatus for centring a spectacle lens 7 with respect to a template 10 and graduated scale 9 for the purpose of edge-grinding the lens comprises a partially reflecting surface 6a of a first beam splitter 6 which is disposed between an eyepiece and the lens 7 by which the graduated scale is imaged in the observer's line of sight B, the template being positioned to the side of the light path C between the scale 9 and the first beam splitter, and a partially reflecting surface 8a of a second beam splitter 8 disposed in the path C whereby the template is imaged in the oberver's line of sight. In an alternative arrangement, the positions of the scale and template are reversed. A lens 2 and prism 3 direct the line of sight B from the eye 1 to the first beam splitter 6. The lens 7 is mounted on a transparent mount 8, and the lens, scale and template may be illuminated from in front or behind. Parallax is avoided by the distance a between the first beam splitter 6 and the lens 7 being equal both to the distance a between the first beam splitter 6 and the scale 9 and the distance e+f between the first beam splitter, second beam splitter and template.
Patent GB-495991-A (GB)
Title: Improvements in or relating to milling cutters and like tools
IPC: B64C3/00
Filed: 1937-09-22
Abstract: 495,991. Milling - cutters. O.K. TOOL CO., Inc. Sept. 22, 1937, No. 25721. Convention date, Aug. 6. [Classes 83 (ii) and 83 (iii)] In an inserted-blade milling &c. cutter the body has a recess for receiving a blade tapering in two directions and a wedge of triangular cross section, the axes of the blade and wedge being at an angle to each other so that the blade will be forced against the base and one side face of the recess in any longitudinally adjusted position of the blade in the recess. The cutter body 10 has a solid annular flange 13 for receiving the cutting blades 15 and a central recess 17 to enable the blade slots 14 to be milled out, and to provide clearance for cuttings. The blades are tapered about 2¢‹ longitudinally, the thinner ends being towards the centre, and are also tapered about 3‹ transversely, the thinner sides being towards the front. The slots 14 are similarly tapered and are arranged so that the cutting faces of the blades are inclined at 10‹ to radii of the cutter and at 15‹ to the axis. The blades are secured by wedges 20 of triangular section inserted in similar grooves 25 in the body and engaging the cutting faces of the blades. The sides 16a of the grooves enclose the wedges to protect them from cuttings. The blades are forced by the wedges against the inclined bases 18 of the slots 14 and this inclination is arranged so that movement of a blade along the slot will cause the two cutting edges 19, 19a to be advanced by different amounts according to the respective amounts of wear. The bases of the slots are cut away at 31, Fig. 4, to provide clearance for the wedges 20 as these move radially inwards due to outward adjustment of the blades. The wedges have a longitudinal taper of 7‹ and are disposed along lines a, b, Fig. 4, which are angularly related to the axes c, d of the blades. The solid flange 13 behind the slots 14 prevents flexure when the wedges are driven home. Making wedges and cotters.-The wedges 20 are produced from bar stock of square section by cutting short lengths 23, Fig. 6, with a saw x of such thickness that one side intersects a diagonal y at one end and the other side intersects a diagonal z at the other end, the cut portions each having a 7‹ taper.
Patent GB-766597-A (GB)
Title: Window mountings for motor vehicles
Inventor: RAMSAY THOMAS WILSON
IPC: B60J10/02
Filed: 1954-09-04
Abstract: 766,597. Mounting vehicle windows. MORRIS MOTORS, Ltd. Sept. 29, 1955 [Sept. 4, 1954], No. 25726/54. Class 20(3) An extruded rubber glazing strip 1, for mounting the curved glass panel 9 of a wrap-round type, front,. or rear. vehicle window, has a channel 2 for tightly gripping the edge of the panel 9. curved flaps 3 and 16, and a slot 6 which is formed in the base of the strip to receive the shorter limbs 5 of a number of L-shaped spring steel clips 4 which are spaced, two or three inches apart, throughout the length of the strip. The longer limbs of the clips 4 are each provided with a pair of barb-like retaining tags 7 which, when the assembly is pushed home into the window surround, dig into the panelling 8 and resist the tendency for the assembly to spring back due to the curvature of the glass panel. The flap 3 is sprung over a retaining' flange 10 and the lip 16 affords a seal with a part 17 of the panelling, a sealing compound being applied beneath the lip 16 to render the joint waterproof. A modified atrip 1A, Fig. 7, having a channel 2A for the panel 9 and curved flaps 3A, and 16. has no slit 6. the assembly being held within the window aperture 8 by means of spring steel clips 11. the shorter limb 12 of each of which is formed as a channel 12 having a pair of barbs 13 to grip the flange 10. When the assembly. i.e. the strip 1A fitted with the panel 9 is pushed into the frame, barbs 13 on the longer limbs 14 of the clips, which have previously been engaged with the flange 10, dig into the strip 1A and hold the assembly firmly in place.
Patent GB-923106-A (GB)
Title: Improvement of a length measuring device
IPC: G01B3/20
Filed: 1960-07-25
Abstract: 923,106. Calliper gauges. M. HENSOLDT & SOHNE, OPTISCHE WERKE A.G. July 25, 1960 [Aug. 21, 1959], No. 25742/60. Class 106 (2). Tilt errors in the slide 3 carrying the movable jaw 4<SP>1</SP> of a calliper gauge are compensated by means of an optical system, one part (lens 82) of which is on the fixed part of the gauge, the other part (lenses 89 and deflecting prism 124) being on the movable part, whereby the image of a fixed index mark 122 will be viewed, via a semi-transparent face of prism 124, in coincidence with a given scale mark M on the calliper beam independent of the tilt (see Fig. 11). To this end, the positive (i.e. remote from the object 122) nodal point K is imaged, via the deflecting prism at K<SP>1</SP> on the axis A-A on which the measurement is being performed. The slide 3 is first of all hand-set to the nearest unit division (e.g. cms.), a resiliently-mounted pin 130<SP>1</SP> then engaging one of a series of holes in a bar 125. The images of the index mark 122 and of the scale mark M should then be in coincidence, but precise adjustment is usually necessary, and this is effected by means of a knurled head 133 with an eccentric stem portion 140. This acts to move the slide 3 relative to pin 130 the latter being connected via a lever 132 to a spherical member 135 housed, with sufficient clearance for the small movements in question, in a guideway 136 of the slide 3. A button 141 acting on the spherical member 135 serves to disengage pin 130<SP>1</SP> from a hole. The scale markings are in the form of twin strokes and the image 19<SP>1</SP> of the reference mark 122 is centred between them using the knurled head 133. (It is during this adjustment that the tilt compensation system is needed). The micrometer 5 set in the movable jaw is then used for the fine adjustment. An eyepiece (not shown) is provided for viewing the images of M and the mark 122, the light entering which leaves the prism 124 via a wedge-shaped prism 128 (optically connected to prism 124) and a further deflecting prism 129. The pentagonal prism 124 provides two rereflections, but a prism giving an odd number of reflections (e.g. a right-angled prism) is used when (as in another embodiment) the optical system and the axis A-A lie on opposite sides of the scale markings M. (In this embodiment, the gauge body is of generally tubular form). In a further embodiment, a separate micrometer is not provided on the movable jaw; instead, as shown in Fig. 10, the movable portion of the optical system is disposed in a beam movable relatively to a guide portion carrying the movable jaw, this guide portion being driven by a micrometer screw 202 and the fine adjustment made using the scales 203.
Patent GB-187810-A (GB)
Title: An improved process for the treatment of magnetic sand or finely-divided iron ore
IPC: C22B1/16
Filed: 1921-09-29
Abstract: 187,810. Naito, A. Sept. 29, 1921. Agglomarating-processes. - Magnetic sand or finely divided iron ore is mixed with powdered coal and coked and the product heaped up in the open air, the iron being converted into soluble form by passing through the mass sulphur dioxide or chlorine gas or by pouring over the heaps sea water or a solution of caustic alkali. The heaps are then left exposed to the air until a proportion of the soluble salts are converted into insoluble salts and the product is obtained in the form of hard lumps or masses which are smelted with a suitable flux in a furnace to obtain pig iron.
Patent GB-504378-A (GB)
Title: Improvements in sensitive photographic films
IPC: G03C1/30
Filed: 1937-09-23
Abstract: 504,378. Hardening gelatine. KODAK, Ltd. Sept. 23, 1937, No. 25768. Convention date, Sept. 25, 1936. [Class 121] [Also in Group XX] The gelatine or gelatine-emulsion layer of a sensitive photographic film has incorporated therein, in addition to an aldehyde hardening agent, a substance which accelerates the hardening and avoids after-hardening consisting of a non-chlorinated homocyclic benzene derivative containing at least one nuclear hydroxy group. Mono-, di- and trihydroxy benzenes, and hydroxy naphthalenos are suitable. These compounds may also contain as substituents alkyl, alkyloxy, aldehyde, sulphonic or carboxyl groups. The aldehyde hardening agent may be formaldehyde, acetaldehyde, glycolaldehyde, aldol or the hydroxy-aldehydes disclosed in Specification 463,427. The Specification as open to inspection under Sect. 91 referred also to the hardening of any gelatine by means of the materials specified above. This subject-matter does not appear in the Specification as accepted.
Patent GB-1000618-A (GB)
Title: Dredging equipment
IPC: E02F9/06
Filed: 1963-06-28
Abstract: 1,000,618. Suction dredgers. PACIFIC COAST ENGINEERING CO. June 28, 1963 [July 23, 1962], No. 25776/63. Heading E1F. In a barge-mounted suction dredger lift of submerged material through a vertically adjustable, ladder-mounted suction pipe 41 is caused by a barge-mounted centrifugal pump at the upper end of the pipe and a jet lift pump 47 at the lower end of the pipe, the jet pump comprising a pressure housing 113 fixed in the ladder and jet means 49 rotatably supported in and surrounded by housing and rigidly coupled in the suction pipe for rotation therewith as the suction pipe is rotated to render effective the cutter means 61 secured to the lower end thereof.
Patent GB-1128557-A (GB)
Title: Improvements in or relating to heating appliances
IPC: B65D5/02
Filed: 1967-06-05
Abstract: 1,128,557. Burners. MAX WEISHAUPT G.m.b.H. 5 June, 1967 [7 June, 1966], No. 25790/67. Heading F4T. [Also in Division H5] An oil preheater comprises a pair of oilcarrying flat spiral tubes 5, 6, joined together at one end and a heating plate 1 sandwiched between them. The sensor 2 of a thermostat 3 is urged into engagement with the heating pate 1 and one of the spiral tubes 5 by a spring 4. The heating plate comprises a mica former wound with resistance wire between external mica sheets. A copper easing encloses the heating plate. Sheet-metal casings, e.g. 15, cover the spiral tubes 5, 6 and are pressed towards each other by disc springs and pressure plates so that the tubes 5, 6 make good thermal contact with the heating plate 1. A starting thermostat 25 allows the oil burner to be brought into action at a predetermined temperature.
Patent GB-1458560-A (GB)
Title: Pneumatic power units using revaporised liquefied gas
IPC: E21F17/10
Filed: 1974-06-11
Abstract: 1458560 Revaporized liquefied gas power units COAL INDUSTRY (PATENTS) Ltd 15 May 1975 [11 June 1974] 25814/74 Heading F4P A revaporized liquefied gas power unit comprises a heat insulated liquefied gas vessel 1 mounted in a protective and supporting framework (Fig. 2, not shown), pressurizing means 4, 8, 10 for pressurizing liquefied gas in vessel 1, a boiler 9 for revaporizing liquefied gas discharged from vessel 1 via line 5 by the pressure of the pressurizing means, the vaporized gas being passed to pneumatically-driven implements 31, 32, 33, and a fan 25 for effecting air flow over the heat-exchange coil 22 of boiler 9, the speed of fan 25, and thus the amount of heat given to coil 22, being controlled in dependence on the temperature of the revaporized gas downstream of the coil 22. A temperature sensor 36 controls valve 27 and thus the amount of vaporized gas fed to operate fan 25. The pressurizing means comprises a boiler coil 8 in which liquefied gas from vessel 1 is revaporized and then returned to the vapour space of the vessel. Means for detecting the amount of liquefied gas in vessel 1 may also be supplied (Fig. 2, not shown).
Patent GB-258681-A (GB)
Abstract: 258,681. Maden, H. June 30, 1926. Rope railways.-A haulage) tractor A driven by an endless rope Q, through pulleys B, E, carries also a capstan head or drum P and a drum S driven by chains V, Z. Drum P is rotated through clutches R, U and drum S through clutches R, T. Pulleys B, E are governed by brake drums J, I, while brake drum H governs a pulley F engaging a stationary anchor-rope or chain G.
Patent GB-889852-A (GB)
Title: Process for regulating the molecular weight of ethylene-propylene and ethylene-butene copolymers
IPC: C08F210/00
Filed: 1960-07-26
Abstract: Copolymers of ethylene/propylene and ethylene/butene are made by copolymerizing a mixture of ethylene and propylene, or ethylene and butene, in the presence of a catalyst obtained by contacting a hydrocarbon-soluble halogenated compound of a transition metal of Group IVa, Va, or VIa of the Mendeleeff Periodic Table, with a compound of the formula MRn in which M is a metal of Group II or III, R is an alkyl group and n is the valency of M, and also in the presence of a molecular weight regulator different from the MRn compound, which comprises an organometallic compound of a metal other than aluminium or beryllium, of Group I, II, or III of the Periodic Table, or a compound of said metal insoluble in the reaction medium which under the conditions of formation of the catalyst is solubilized by reaction with the MRn compound. Exemplified catalysts are mixtures of vanadium tetrachloride and aluminium tri-i-butyl. The molecular weight regulators may be zinc diethyl or cadmium diethyl or zinc chloride.  The polymerization is generally effected in the presence of heptane, although solvent and diluents may be absent.  The copolymers may be vulcanized under heat and pressure with a mixture of carbon black, sulphur, cumyl peroxide or tert. butyl cumyl peroxide.
Patent GB-689767-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C35/187
Filed: 1950-05-22
Abstract: 689,767. Endless-chain mining-machines; laying dust in mines. MUSCHAMP, N. J., and COWLISHAW, F. May 22, 1950, No. 25993/51. Divided out of 689,737, Classes 68(i) and 85 '[Also in Group XXIX] In a mining-machine one or more ducts 10 are provided for conveying dust-suppression liquid to the desired location and each duct has an enlarged outlet recess at the delivery end of the duct. In a particular embodiment, a cutter jib has positioned in the top plate 1 thereof a plurality of delivery ducts, the outer ends of which are screw-threaded to receive a complimentary screw-threaded nozzle 13 having a narrow bore 15 leading to an enlarged annular recess 14a in the outer face of the nozzle which does not protrude beyond the jib. Specification 689,737 is referred to.
Patent GB-520935-A (GB)
Title: Improvements in and relating to sedimentation apparatus
IPC: B01D21/18
Filed: 1938-09-06
Abstract: 520,935. Gravity-separation apparatus. NEYER. L., BOTTOMLEY, C. D., and DORR-OLIVER CO., Ltd. Sept. 6, 1938, Nos. 26014/38 and 8730/39. [Class 111] A scraper or suction device for collecting sludge on the bottom of a settling-tank is supported by an arm or the like hinged to travelling-means and comprising hinged elements which are moved into a folded position to raise the scraper or suction device. As shown in Fig. 1 a scraper 6 is carried by a pair of arms hinged to a carriage 5 travelling on rails 4, each arm comprising two hinged members 8,-. 9, the lower ends of which are raised by cables 10, 11, passing round winch drums 12 of different diameters on a common shaft. The parts may be so proportioned that the scraper moves vertically as it is lifted to its inoperative position above the tank. Figs. 2 and 3 show apparatus in which a scraper 17 is supported by a pair of foldable mechanisms, each comprising four hinged frames arranged to give a roughly diamond shaped figure in cross-section. The upper sides of the upper frames 18, 21 are attached to shafts 23, 24 on a travelling carriage, the shafts being geared together by toothed quadrants 25, 26. The scraper is raised by cables 28; attached to the hinged joints 22 connecting the lower frames and passed upward to a winch 27, the frames being folded as shown diagram cally in Fig. 3.
Patent GB-1077600-A (GB)
Title: 1,2-silthiacyclopentanes and process for producing them
IPC: C07F7/08
Filed: 1966-06-10
Abstract: The novel 1,2-silthiacyclopentanes of the formula <FORM:1077600/C3/1> where M is a branched or unbranched aliphatic hydrocarbon group which connects the silicon and sulphur atoms through three carbon atoms, R1 and R2 are the same or different and each represents an alkyl or alkoxy group of at most 6 carbon atoms or a phenyl group, are prepared by heating mercaptans of the formula R1R2R3SiMSH, where R3 is an alkoxy group o at the most 3 carbon atoms, to a temperature above 150 DEG  C. and removing the alcohol R3H thus formed by distillation.  M is preferably -(CH2)3-or-CH2-CH(CH3)-CH2 -.R1 and R2 may be methyl, ethyl, n- and iso-propyl, n- and isobutyl, n- and isopentyl, or hexyl or the corresponding alkoxy groups.  The reaction may be carried out in the presence of an alkali metal alcoholate or mercaptide as catalyst, e.g. sodium ethylate.  The alcohol formed can be distilled azeotropically with, for example, benzene or toluene. In the examples, 1-methyl-1-ethoxy -1,2-silthiacyclopentane, 1,1-diethoxy-1,2 - silthiacyclopentane and 1,4 - dimethyl - 1 - ethoxy - 1,2-silthiacyclopentane are prepared.
Patent GB-1141608-A (GB)
Title: Improvements in or relating to tyred wheels
Inventor: CANHAM EDWARD JOHN
IPC: B60B19/00
Filed: 1965-06-21
Abstract: 1,141,608. Solid tyres. RUBBER PLASTICS Ltd. 3 June, 1966 [21 June, 1965], No. 26106/65. Heading B7C. In order to reduce any tendency to breakage of the bond of a polyurethane tyre 12 with a metal rim 10 the rim has at each edge a circumferential rebate into which liquid polyurethane flows, during casting of the tyre on the rim, to form radial flanges 13. The rim has an outside diameter and width of at least 6 and 2 inches respectively; the tyre has a minimum radial depth of ¢ inch, and each rebate has a radial and axial depth between # and ¢ inch, and <SP>1</SP>/ 16  and ¢ inch respectively.
Patent GB-518843-A (GB)
Title: Improvements in or relating to ball polishing drums for mass produced articles
IPC: B24B31/03
Filed: 1938-09-07
Abstract: 518,843. Rumbles. LANGBEIN-PFANHAUSERWERKE AKT.-GES. Sept. 7, 1938, No. 26123. Convention date, Oct. 27, 1937. [Class 60] Apparatus for polishing electro-plated &c. articles comprises a rotatable drum in which the articles and polishing-elements are placed, the drum being provided at opposite ends respectively with means for the introduction and withdrawal of predetermined charges, so that the charge in the drum remains approximately constant. The drum 1, the jacket 7 of which has a hard wood lining 2, has at one end a pipe 3 for entry of the articles and at the other end a pipe 5 for the final exit of the articles the pipes carrying rims 11, 13 running on rollers 12, 14 mounted outside a trough 20 containing liquid which may pass through perforations into the drum. At the outlet end the jacket 7 merges into a spiral guide 8, formed as a sieve, so that the mixture of articles and polishing elements leaving the drum passes over the guide whereby the elements fall into an outer jacket 15 and the articles pass over a shoot 10 to a conveyer worm 6 in the pipe 5. The elements are moved back to the inlet end of the drum by a conveyer worm 19 and pass along a spiral guide 18 back into the drum with untreated articles fed by a conveyer 4 from an inlet funnel 21; the articles are fed to the funnel by a conveyer band 22. The outlet from the drum is normally closed by a flap 24 pressed by a lever 25 actuated by a rod 26 pressed by a spring 27, the rod being moved to open the flap by a cam 30 and lever 29. The drum is rotated, through gearing 33, 34, by a shaft 32 and the cam is rotated step by step by pawl and ratchet gearing 38-40, a shaft 42 and gearing 43, 44, 46, 47 from a crank pin 35 on the gear 33; the effective stroke of the pawl is variable. The shaft 42 also serves to drive, through gearing 48, 49, 51, 52 the conveyer 22.
Patent GB-866036-A (GB)
Title: Brackets for supporting rainwater guttering on buildings
Inventor: TAYLOR PHILLIP
IPC: E04D13/072
Filed: 1958-08-15
Abstract: 866,036. Gutter brackets. JONES & CO. Ltd., ROBERT. Aug. 11, 1959 [Aug. 15, 1958], No. 26250/58. Class 52(5). A gutter bracket is formed as a sheet metal pressing having a marginal flange 10 affording an arcuate seating for a gutter 11, the web 12 of the pressing being formed at the fixing end of the bracket with right-angularlydisposed lugs 13 holed to receive fixing screws and the flange 10 being continued from the outer end and extending rearwardly along the underside of the bracket. One or more tapered tongs 15 project rearwardly beyond the lugs 13. An abutment 16 is formed on the bracket for the rear edge of the gutter 11.
Patent GB-389819-A (GB)
Title: Improvements in and relating to direction responsive devices
IPC: G01C19/00
Filed: 1931-09-21
Abstract: 389,819. Motor driving arrangements. BRLTISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Tear, J. D. ; 1030, Wendell Avenue, Schenectady, New York, U.S.A.) Sept. 21, 1931, No. 26374. Convention date, Sept. 20, 1930. [Class 35.] An earth inductor compass, particularly for aircraft, and having a pendulously stabilized member, and,an.auxiliary gyroscope. for voltage compensation, has its indicator 95 connected to a thermionic valve circuit for energizing clutch mechanism automatically connecting the rudder motor 103. The indicator response in one direction or the other operates a relay 96 to supply current to the clutch coils 101, 102, the thermionic valves 99, 100 being biased normally to pass no current. The rudder gear 104 is provided with an arm 105 moving over a resistance 106 and the connections are such that a voltage is impressed on the relay in opposition to that from the gyroscope connections 25, 26. The relay 96 is then de-energized, the rudder having been turned through an angle corresponding to the deviation of the craft from its course. While the craft is returning to its course, the voltage across the indicator decreases and that due to the displacement of the arm 105 preponderates, reconnecting the motor and straightening the rudder. The rudder is driven through a shaft 121 on which are loosely mounted bevelled gears 119, 120 continuously driven by the motor 103. The windings 101 are stationary and when energized pull over the friction clutch member 125 which is splined on the shaft 121. A copper ring 124 prevents closure of the flux path through.the gears. Specification 342,038 is referred to.