baber/WOPTO huggingface dataset:
Patent GB-1299283-A (GB)
Title: Paper feeding mechanism for photographic printers
IPC: G03B27/58
Filed: 1970-06-02
Abstract: 1299283 Photo-copying apparatus PAKO CORP 2 June 1970 [6 June 1969] 26649/70 Heading G2A [Also in Division B8] In a photographic printer having a paper supply mechanism 11 and a take-up mechanism 19 with an exposure area A receiving paper 12 to be exposed, there is provided mechanism for feeding precisely adjustable lengths of the paper to and from said area A, the mechanism including a rotatable arm 22 in driving connection with paper feed rollers 13, 14, the effective actuating length of the arm being precisely variable so as to controllably vary the amount of rotation of the rollers 13, 14 when the arm 22 is rotated through a predetermined arc. Tensioning rollers 16, 17 are provided to keep the paper taut in the exposure area A. The arm 22 is provided with an adjusting slide 23 to which one end of a chain 20, driving the rollers 14, 17, is pivotably connected, the other end of the chain being connected to a return spring 21. The slide 23 is meshed with a worm 24 which is rotated by a control knob 26. The arm 22 is rotated through a complete circle by a single revolution type clutch mechanism 27, Figs.2, 3 (not shown). Sequence of operations. The arm 22 starts from the vertical position shown in Fig.1. As it rotates clockwise, the speed of the chain 20 will gradually accelerate until it reaches a maximum when the arm 22 has rotated through 90 degrees. Thereafter the chain decelerates for the next 90 degrees of rotation. As the arm 22 finishes a complete circle, the chain 20 is returned to its initial position by the spring 21 under control of the arm 22. Over-running clutches (35) permit return of the chain without reversing the rollers 14, 17. An anti-backlash over-running clutch mechanism (34a) is associated with the arm 22. An identifying number stamp mechanism 15 and control circuit are also provided, the latter effecting an exposure after each revolution of the arm 22.
Patent GB-444320-A (GB)
Title: Air-screw for aircraft, with automatically variable blade-pitch
IPC: B64C11/34
Filed: 1934-09-18
Abstract: 444,320. Air -screws. BOUR, E. F., Forest-Side, Mauritius. Sept. 18, 1934, No. 26733. [Class 114] A variable-pitch air-screw has its blades attached to spindles 2 which are secured to the blade socket 3 with intermediary shims 5 and held in the boss against centrifugal force by a cap nut 8. The mounting is completed by a ball or like thrust bearing 7 and adjusting shims 14, 15. In an alternative construction the blade spindles are offset from the axis and continue to cross the boss, the cap nut being outside and on the opposite side of the boss. For adjusting the pitch, projections upon the cap nuts are adapted to be engaged by projections 9 on a cross-piece 13 slidable in the boss, such movement being restrained by a central axial spring. In an alternative arrangement the springs are outside the boss and on projections on the blade socket 3. Specifications 7084/09, 630/10, 21067/10, 5248/10, 3444/11, 124,935, 161,961, 311,472, [all in Class 114], 361,722, 377,797, 378,591, and 388,455 are referred to.
Patent GB-1218763-A (GB)
Title: Acetylacetonate transesterification catalysts in the preparation of polyester prepolymers and polyester resins
IPC: C08G63/84
Filed: 1968-06-05
Abstract: 1,218,763. Polyesters. FMC CORP. 5 June, 1968 [30 Aug., 1967], No. 26735/68. Heading C3R. [Also in Division C2] Polyesters are made by effecting a transesterification reaction between a dialkyl ester of a dicarboxylic acid and a diol in the presence of cerium (III) acetylacetonate or lead (II) acetylacetonate as catalyst and then polycondensing the product in the presence of a polycondensation catalyst, e.g. antimony trioxide. In the examples polyethylene terephthalate is made from dimethyl terephthalate and ethylene glycol.
Patent GB-356475-A (GB)
Title: Improvements in portable proportioning machines for use with mixing machines
IPC: B28C7/04
Filed: 1930-09-08
Abstract: 356,475. Feeding devices for mixing- machines. YETT, P. W., East Salmon Street, Portland, Oregon, U.S.A. Sept. 8, 1930, No. 26738. [Class 86.] Apparatus for feeding predetermined quantities of aggregate &c. from fixed bunkers to concrete mixing-machines, which mix in transit, comprises a hopper which is divided into compartments for the ingredients, mounted on a weighing platform, and movable horizontally in directions at rightangles so as to bring its discharge shoot into correct position for feeding into the mixing drum. The sand and aggregate are stored in a divided bin 10, Fig. 1, and the cement in a separate bin 14, manually-operated discharge doors &c. 12, 13, and 16 being provided for feeding the materials to compartments in the hopper 42, which is mounted on rollers 41, Fig. 5, riding on transverse members 40 forming a frame supported by rollers 38 in a frame 37 forming a weighing platform. The weighing platform is carried on members 33 forming part of a structure 27 mounted on wheels 31. As shown in Fig. 8, the hopper is provided with compartments 44, 45 for the aggregate and sand, and a compartment 55 fitted with a hand-operated shutter 51 for the cement. The hopper is provided with an adjustable shoot 63 and a discharge gate 64. The weights of the ingredients are registered on a scale beam 67 as they are fed from the bins, and the hopper adjusted transversely of the drum by means of a hand-wheel 61 and endless chain 59 to bring the shoot into register with the drum 24, the vehicle being then backed; the mounting of the shoot on the rollers 38 prevents damage if the vehicle backs too far.
Patent GB-387419-A (GB)
Title: Improvements in or relating to stereotype plate casting boxes
IPC: B41D3/04
Filed: 1931-09-25
Abstract: 387,419. Casting stereotype plates. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Goss Printing Press Co.; 1535, South Paulina Street, Chicago, U.S.A.) Sept. 25, 1931, No. 26791. [Class 100 (ii).] In a process for casting stereotype plates heat is applied uniformly to at least one of the members of the casting box before the molten metal is poured in, the heat applied being thereafter varied to maintain the members at a substantially constant temperature. The stereotype plate casting box consists of a vertical semicylindrical core 2 and a drag 5, pivoted at 12, movable to coact with the core 2 to which it is held by hooks 16, 23, governed by a lever system 29 .. 32, which embrace pins 19, 26 on the drag. The matrix-holding means comprises a head ring 37 and side clamps 38, the matrix throughout its whole area being held against the drag by pneumatic means. For this latter purpose an air suction pump 48 is connected to a number of passages 41, 42 by means of a flexible tube 47, pipes 45, 46, and an arcuate chamber 43. For automatic operation of the pneumatic means a valve 53, which may be operated, alternatively, by a foot pedal 60, is opened, and maintained open during casting, by a cam 61, fixed on the shaft 12, when the drag is turned to coact with the core 2. The heating means for the drag comprise a number of electric heating elements 70, disposed in chambers 75, which may be cooled, if necessary, by the circulation of cool air from a source of supply 88, and delivered by a hose 87, pipe 83, and distributing box 84. The temperature is preferably controlled automatically by a thermostat 119<1>, which may be a bimetallic element. This element is connected between electric mains, and, depending upon the degree of heat to which it is subjected, will energize a solenoid-controlled switch to put the heating elements into operation or, alternatively, will operate a solenoid-controlled valve 89, in the air supply pipe 83, to allow the entry of a current of cool air. The core is also provided with electric heating means 99, and cooling air supply means 108, both of which are preferably governed by a thermostatic device 119 and control valve 109 as with the drag.
Patent GB-823573-A (GB)
Title: Improvements in and relating to scanning systems for television and like purposes
IPC: H04N5/06
Filed: 1956-09-03
Abstract: 823,573. Television generating pulses photoelectrically. HOPKINS, A. O. July 30, 1957 [Sept. 3, 1956], No. 26814/56. Class 40 (3). Line synchronizing pulses are generated in a photo-electric cell 12 with the aid of axially aligned radially apertured opaque discs 5, 6, the first of which is stationary and is illuminated by a bar-shaped light source 1 which is located on the axis of the discs and has its light directed on to the disc by way of a cone-shaped reflector 4, and the second of which is rotated by a motor 8. Light passing through the discs is reflected to photo-electric cell 12 by an apertured plane reflector 11. A further radially apertured disc 13 carried on the shaft 7 that rotates disc 6 operates in conjunction with a light source 14 and photoelectric cell 16 to generate frame synchronizing pulses. Disc 5 is carried by a transparent plate 3 the centre of which is formed with a bearing 9 for supporting shaft 7 and lamp 1 as shown more fully in the lower part of the Figure. The invention is described as applied to a television system employing triple interlaced scanning. In one example, disc 5 has twenty-six apertures, disc 6 twenty-three apertures, disc 13 three apertures and shaft 7 is rotated 16<2>/3 revolutions per sec. The resulting line and frame frequencies of 9966<2>/3 and 50 cycles per sec. provide a 598- line picture made up of three frames each of 199<1>/3 lines. Other examples are referred to. In carrying out the scanning, the scanning element is adjusted to line thickness so that the lines of successive frames touch and the whole of the picture area is covered.
Patent GB-390071-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B13/20
Filed: 1932-09-27
Abstract: 390,071. Photographic cameras combined with telemeters. LEITZ GES., E., Optical Works, Wetzlar, Germany. Sept. 27, 1932, No. 26845. Convention date, Oct. 22, 1931. [Class 98 (i).] In a camera provided with a shortbase telemeter the movable mirror of which is interconnected with the screwfocusing mount of the objective by mechanism including two levers which make sliding engagement with each other, as described for example in Specification 371,252, one or each of the lever surfaces which slide upon each other is curved in such a manner as to compensate for the varying relationship between the objective movement and the telemeter movement. As shown in plan in the Figure, the movable mirror-prism A of a telemeter mounted on the top of a camera is carried by a lever A<1> pivoted at A<2> and urged by a spring against the rear of the casing C. An adjusting screw D with a flat end D<1> is carried by the lever A<1> and bears on a convex surface F<2> formed on a semicircular flange on the spindle E<1> of a lever E whose free end coacts with the rear end of the objective mount (not shown). The sliding engagement between the end of the screw D and surface F<2> provides the desired correction. The end of the screw may be convex and the surface F<2> flat. The Specification as open to inspection under Sect. 91 states also that the end of the screw D may be pointed and bear on a flat surface F<2> ; or it may be flat and bear upon a pointed projection on the surface F2 or on a portion of this surface which is partly flat and partly in the form of an angular depression. This statement does not appear in the Specification as accepted.
Patent GB-297464-A (GB)
Title: Safety device against the theft of motor vehicles
IPC: B60R25/042
Filed: 1928-09-19
Abstract: 297,464. Liberman, A. I. Sept. 22, 1927, [Convention date]. Fastenings operated mechanically from a distance.-In safety mechanisms controlled secretly and remotely by a lock to present the theft of motor vehicles, a throttle valve 3 is held closed by an arm 33 on a spindle 32 held by a ball 34 but rotated by a sliding sleeve 27 actuated by a wire 1 connected to a handle 18. The handle carries a, sleeve 15 with inclined flange 14 which is engaged by the sliding bolt 13 of a lock 2 and engages the spindle 20 of an earthing switch in the ignition circuit. The casing 5 is secured by screws concealed by a cover 6 which is itself secured by screws concealed by an extension 19 of the handle 18. The sleeve 27 is engaged by a plug 26 having a stepped end contacting with a spring stop 42 when the wire is cut.
Patent GB-1308243-A (GB)
Title: Radio frequency sputter apparatus
IPC: C23C14/34
Filed: 1970-06-03
Abstract: 1308243 R.F. Spluttering VARIAN ASSOCIATES 3 June 1970 [11 June 1969] 26877/70 Heading C7F R. F. sputtering apparatus comprises a first and a second electrode structure, spaced apart, an earthed shield 6 disposed around the outside of said first electrode structure 4, means 8 for applying R. F. energy to the space between electrode structures 4 and 5 to produce a R. F. plasma discharge in the space therebetween, said first electrode structure being substantially isolated from earth potential for D.C. potentials, and a circuit forming a direct current connection and including a series-connected R. F. inductor 24 connected or connectable between said second electrode structure and earth potential. The apparatus may be used in two modes, (I) with switches 15 and 16 as shown, wherein substrates 13 tend to be excessively heated, and (II) with 15 and 16 connected to 22 and 23 whereby inductor 24 is brought into the circuit, avoiding excessive substrate heating. The sputtering gas is Ar, the target 14 may be of Cu, Au, stainless steel, Al 2 O 3  or glass, the substrate may be Si, the R. F. source may be a R. F. coil actually within bell jar 2 Fig. 2, (not shown), and a R. F. shield 7 may surround the bell jar.
Patent GB-207514-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J1/14
Filed: 1923-10-29
Abstract: 207,514. Western Electric Co., Ltd., (Assignees of Harris, J. E.). Nov. 27, 1922, [Convention date]. Vacuum tubes. - The cathode of a valve comprises uranium. A filament of uranium or an alloy of uranium with tungsten, tantalum or other refractory element may be used, or powdered uranium may be contained in a boat 8 of molvbdenum mounted on metallic frames 6, 7 below an anode 9 which is carried by a support 3 extending from a reentrant etem 2. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also the use of other metals having a relatively high melting point, a low rate of volatilization, and a thermionic activity of the same order as the alkaline earth oxides. This subject-matter does not appear in the Specification as accepted.
Patent GB-186839-A (GB)
Title: Improvements in and relating to casings for transformers and other electrical apparatus
IPC: H01F27/12
Filed: 1921-10-12
Abstract: 186,839. British Thomson - Houston Co., Ltd., (General Electric Co.). Oct. 12, 1921. Transformers.-A casing 10, for oil-submerged electrical apparatus, such as transformers, reactances, oil switches, &c. is provided with external radiators 20 which communicate with the casing at points near the bottom and at points in the cover 11, the casing being completely filled with oil and provided with an expansion chamber 12.
Patent GB-1512627-A (GB)
Title: Magnetic coupling
IPC: B65H59/38
Filed: 1974-06-19
Abstract: 1512627 Driving arrangements for dynamoelectric machines MARLDON (ENG SPECIALTIES) LTD 12 June 1975 [19 June 1974] 27085/74 Heading H2A The drive member 1 and driven member 4 of an axial air gap magnetic coupling are relatively movable transverse to their axes of rotation to vary the torque transmitted. As shown the drive member 1 is driven by an electric motor 20 and the two are transversely movable on a slide 23. The drive member 1 and motor 20 may also move axially on a slide 22 to vary the torque transmission by varying the air gap between members 1 and 4. In a modification, Fig. 7 (not shown) the slide 23 is omitted and the electric motor 20 and the driven member 4 are mounted on respective pivots.
Patent GB-1186548-A (GB)
Title: Formamidine Derivatives
IPC: C07D213/38
Filed: 1967-06-12
Abstract: 1,186,548. Formamidine derivatives. EGYESULT GYOGYSZER-ES TAPSZERGYAR. 12 June, 1967 [11 June, 1966], No. 27089/67. Heading C2C. Novel compounds of formula wherein R<SP>1</SP> and R<SP>2</SP> are each H, alkyl, alkoxy, NO 2 , or halogen, R<SP>3</SP> is H and R<SP>4</SP> is a carbocyclic aryl group optionally having one or more C 1-4  alkoxy, NO 2 , CF 3  or halogen substituents, C 4-7  cycloalkyl, an unsubstituted bicyclic aryl group, OH, or C 1-4  mono- or di-alkylaminoalkyl group, or R<SP>3</SP> and R<SP>4</SP> together with the nitrogen atom form a heterocyclic group containing 5 to 7 ring members including optionally an oxygen or nitrogen atom as a further hetro atom and optionally substituted by a C 1-4  alkyl group, and n is 0, 2 or 3 and acid addition and quaternary salts thereof, are prepared by reacting a compound of formula with a compound of formula H-N(R<SP>3</SP>).R<SP>4</SP>, where X is C 1-4  alkyl, optionally followed by salt formation. Pharmaceutical compositions in conventional forms and having anthelmintic, bactericidal and antifungal activity comprise an above novel compound or salt and a carrier therefor.
Patent GB-1460063-A (GB)
Title: Lid hinge
IPC: E05D7/12
Filed: 1974-06-19
Abstract: 1460063 Hinges ELMBRIDGE PRODUCTION ENGS (WALTHAMSTOW) Ltd 17 April 1975 [19 June 1974] 27104/74 Heading E2F In a hinge assembly 10 for securing to first and second parts to be hinged, a first hinge member 14, 16 is provided with a pair of lugs 18 disposed parallel to each other, a second hinge member 22 is also provided with a pair of lugs 26 disposed parallel and adjacent to each other, the lugs 18 of the first pair being adjacent the lugs 26 of the second pair with the interposition of washers 30 of a plastics material, and the lugs are urged against the washers 30 by screw means 28 with sufficient force to provide frictional resistance between the lugs, the second part to be hinged being slidably engageable with a sleeve member 12 fixedly secured to the second part to be hinged.
Patent GB-1100347-A (GB)
Title: Water dilutable resin compositions
Inventor: HUNT THOMAS
IPC: C08F212/14
Filed: 1964-07-01
Abstract: A non-yellowing water dilutable resin composition comprises an aq. solution of a salt of a copolymer formed by copolymerizing in the absence of aq. alkali (1) a product obtained by reacting (A) an oil which does not contain more than 10% of linolenic acid residues, has an iodine value of 125-155 mgs./gm., and comprises a triglyceride ester of an unsaturated fatty acid having at least 12 carbon atoms in the carbon chain containing the unsaturation, a fatty acid obtained from the oil or esters of such acids with (B) a dicarboxylic acid or anhydride having less than 10 carbon atoms in any carbon chain, no cyclic groups, and olefinic unsaturation or partial esters of such acids or anhydrides with (2) a vinyl aromatic compound which is initially present as not more than 50% by weight of the initial reactants and a watermiscible solvent for the copolymer.  The copolymer may be derived from (1) the reaction product of (A) tobacco, or safflower seeds or soya bean oil or the methyl, trimethylol propane or pentaerythritol esters of the fatty acids derived therefrom and (B) maleic, and (2) styrene or vinyl toluene and optionally methyl methacrylate in the presence of di-tert.-butyl peroxide and may be neutralized with triethylamine. The water-miscible solvent may be ethylene glycol monobutyl ether or its acetate. The composition may contain cobalt naphthenate as a drier, when used to form films.
Patent GB-744234-A (GB)
Title: Dust-core for the coils of electrical communication circuits
IPC: H01F17/04
Filed: 1951-11-19
Abstract: 744,234. Inductors. KASCHKE, K., and VOGT, H. Nov. 19, 1951 [Nov. 17, 1950 ; Dec. 16, 1950; Dec. 19, 1950; Jan. 12, 1951 ; Jan. 13, 1951 ; June 14, 1951], No. 27132/51. Class 38 (2). A magnetic core for a telecommunication coil comprises a part passing through the coil made of sintered ferrite and another part or parts made of ferrite powder or iron powder compressed with a binder, or a mixture of such materials. Thus, a reel-shaped core comprises a sintered ferrite stem with end lugs engaging recesses in end discs of compressed iron powder, Fig. 1 (not shown). A pot core comprises a sintered iron cylinder 25 which screws on the plastic coil holder 27 to a selected distance from a sintered ferrite disc 30, a flexible plastic stop ring 31 being provided, Fig. 2. Other cores are described having parts fixed together by thermoplastic moulding, by screws of which the threads are moulded on to layers of sintered ferrite, Fig. 4 (not shown), and by gluing. In a band-pass filter, Fig. 9, two coils 166, 167 with core parts 168, 169 of sintered ferrite, 170, 171, of compressed iron or ferrite powder and 182, 183 movable to vary the inductance, are mounted on supports 172, 173 in threaded engagement with a ring 176. They are moved to and from each other by rotation of the ring by a tool passed through an opening 181 in a screening can 180.
Patent GB-816094-A (GB)
Title: Drier for loose material, particularly granular material
IPC: F26B17/28
Filed: 1957-08-28
Abstract: 816,094. Drying apparatus. FLEISSNER, H., FLEISSNER, H., and FLEISSNER, G., [trading as FLEISSNER & SOHN MASCHINENFABRIK]. Aug. 28, 1957 [Sept. 1, 1956], No. 27140/57. Class 34(2) Loose, e.g. granular, material is dried by being dropped over a series of perforated rotating drums 11, 12, 13, whilst their interiors are subjected to suction applied by a fan to at least one end of each drum. Cover plates 16, 17, 18, on the inside of the drums concentrate the suction over the uncovered portions and material leaving the drum 13 may be further dried by similar obliquely placed drums below it. The drier may comprise a plurality of drum series the material being moved from the lower drum of one series to the top of the next by a suitable conveyer.
Patent GB-891348-A (GB)
Title: Improvements in and relating to optical comparators
Inventor: SIBTHORP ARTHUR NIGEL
IPC: G01N21/956
Filed: 1959-08-07
Abstract: 891,348. Optical compositions; projection systems. WATSON, MANASTY & CO. Ltd. July 13, 1960 [Aug. 7, 1959], No. 27146/59. Class 97(1). In order to compare opposite surfaces of an object, separate images thereof are projected in superposed or closely adjacent relationship, by an optical system including means whereby the images are presented in the correct relative "hand" for direct comparison. As shown in Fig. 1, light from opposite sides of an object 1 is directed through lenses 4, 5 so as to be combined at semi-reflecting surface 8 into a single beam and thus form superposed images on a screen. In the light path of one beam to the surface 8 there is disposed a prism 12 which serves to reverse the image carried by this beam, without inverting it, lenses 4, 5 may be omitted, a single lens being disposed after the surface 8. Parallelism of the beams entering lenses 4, 5 may be ensured by use of a mirror 2 and an optical square 16, 17, as shown in Fig. 3, in which the. beam combining surface is a half-silvered glass sheet 15 and difference of optical path is compensated by a glass sheet 18. Two pairs of superposed images, differently magnified, if desired, may be formed by an arrangement as is Fig. 4 wherein beams from opposite sides of object 1 are combined at a semi-reflector 19 and the two image pairs are respectively formed on screens 21 and 48. In this case, the semi-reflector 19 may be replaced by a prism which is hexagonal or wedge-shaped so that light entering through one face emerges after reflection at a semitransparent surface in a direction perpendicular to another prism face (Figs. 13, 14 not shown). A coloured light source or filter may be arranged in one or each light path to facilitate image comparison. The object 1 may be opaque or transparent. Various other optical arrangements are described.