baber/WOPTO huggingface dataset:
Patent GB-1020191-A (GB)
Title: Preparation of polyesters
IPC: C08G63/78
Filed: 1963-08-27
Abstract: A process for the continuous production of a polyester by reaction of a polyhydric alcohol and a dicarboxylic acid or the anhydride thereof with the elimination of water of condensation, comprises heating the reaction mixture to esterification temperature in a confined zone so that the heated mixture comprises half-esters of said reactants but with substantially no esterification taking place, any water formed being substantially prevented from escaping from the reaction mixture, and then discharging the heated mixture from the confined zone into a flash zone to permit vaporization of the water and the completion of the esterification process. Specified polyhydric alcohols are propylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, neopentyl glycol, tetraethylene glycol, butylene glycol, dipropylene glycol, glycerol, trimethylolethane, pentaerythritol and sorbitol.  Specified dicarboxylic acids are maleic, itaconic, fumaric, chlorendic, succinic, sebacic, cis-endomethylene tetrahydrophthalic, phthalic, isophthalic, terephthalic and adipic acid.  Monocarboxylic acids, e.g. acetic, stearic, oleic, linoleic, linolenic and benzoic acid, inhibitors, e.g. hydroquinone and trimethyl benzyl ammonium chloride and catalysts, e.g. p-toluene sulphonic acid, zinc chloride, tin oxide, tin tetrachloride and tin octoate may be present in the reaction mixture.  The examples describe the preparation of a copolymer from maleic anhydride, phthalic anhydride and propylene glycol.
Patent GB-382114-A (GB)
Title: Improvements in or relating to domestic hot water circuits
IPC: F24D3/10
Filed: 1931-12-08
Abstract: 382,114. Ejectors. NEWMAN, RENDER, & CO., Ltd. and NEWMAN, C. P., Woodchester, Gloucestershire. Dec. 8, 1931, No. 34043. [Class 71.] In a domestic hot water system where hot water is pumped to a higher level by an ejector d, e mounted in a casting a attached to pipes o, p of the water circuit, the external surface of the casting forms a bearing for a swivel member q carrying a dip pipe t. The casting has an aperture w which can be brought into and out of alignment with a corresponding aperture x in the swivel member. The casting comprises a tapered tubular member with two internally screwed flanges b, c engaging complimentary parts of the ejector. Specification 363,830 is referred to.
Patent GB-325294-A (GB)
Title: Improvements in or relating to cooling systems on motor-tractors and other motor vehicles
IPC: F02B67/06
Filed: 1928-11-20
Abstract: 325,294. Rushton, G. Nov. 20, 1928. Drawings to Specification. Dynamos, arrangement of. - An auxiliary dynamo is driven by a belt or chain which also drives the radiator fan, and the cooling-water pump.
Patent GB-875756-A (GB)
Title: Improvements in crates
Inventor: HARDING SYDNEY JOSEPH
IPC: B65D71/52
Filed: 1956-11-08
Abstract: 875,756. Bottle crates. DAIRY SUPPLY CO. Ltd. Dec. 3, 1957 [Nov. 8, 1956], No. 34148/56. Class 18. A multi-compartment skeleton crate e.g. for bottles has a base formed by rods 5 also constituting the compartments bases and side walls, which rods 5 depend from a main upper frame the rods 1, 2 of which intersect to define entry mouths to the compartments for the bottles. The rods 5 have portions 7 parallel with the upper frame which form the bases mentioned and upwardly extending portions 6 to position the bottles. The rods may be covered with plastic material.
Patent GB-1090469-A (GB)
Title: Screw adjustment mechanism
Inventor: SMEDT FELIX FREDERIK DE
IPC: B29C48/31
Filed: 1965-08-10
Abstract: 1,090,469. Adjustable extrusion orifice. GEVAERT-AGFA N.V. July 27, 1966 [Aug. 10, 1965], No. 34209/65. Heading B5B. [Also in Division F2] An adjustment mechanism for relatively displacing two members or parts of a common member (e.g. the lips 16, 17 of a slit extrusion orifice), comprises a screw-threaded bore 37 in one member, an aligned bore which extends through the other member, and which is enlarged over one portion of the bore length 22 for accommodating a bolt or screw head 21 while providing an internal shoulder against which such head can thrust, a bolt or screw 19 of which the shank is in screw-threaded engagement with said bore in the one member but extends through without threaded engagement with the narrower part 20 of the bore in said other member, and bolt or screw retaining means 26 fitted to said other member, so as by abutment against the top of the bolt or screwhead to prevent axial displacement of the bolt or screw relative to said other member when the bolt or screw is turned, but without preventing introduction of a tool into the bore enlargement for turning the bolt or screw. The retaining means may be a bar, which slides into operative position along a guideway 24, 25 running normal to the bolt or screw axes, and which has holes 27 in to allow access to the bolt-heads. The orifice 15 is adjustable, and is fed via cavity 14 and feedpipe 13. At 18, there is weakness in the body 12, which allows the lip 17 to move relative to the remainder.
Patent GB-170514-A (GB)
Title: Improvements in and relating to reflectors such as are used in cinematograph projection apparatus
IPC: G02B5/08
Filed: 1920-07-05
Abstract: 170,514. Evans, J. July 5, 1920. Rejectors.-Reflectors, such as are used in kinematograph projection apparatus, are made from an aluminium and silver alloy which does not modify the colour of the reflected light. The reflectors may consist of a single sheet having a number of separate reflecting-surfaces set at an angle to one another.
Patent GB-946463-A (GB)
Title: Spectacle hinge construction
IPC: G02C5/22
Filed: 1960-10-06
Abstract: 946,463. Spectacle hinge parts. R. RODENSTOCK, [trading as OPTISCHE WERKE G. RODENSTOCK]. Oct. 6, 1960 [March 26, 1960], No. 34351/60. Heading G2J. A spectacle hinge part comprises a single limb 1 with an eye 2 at one end for pivoting to another hinge part and an enlargement at the other end, preferably comprising a neck 4 and a head 5, the region of the limb between the eye and the enlargement has relatively narrow and wide cross-sectional dimension in the directions respectively parallel and perpendicular to the pivotal axis of the eye and is capable of being bent to adjust the angle between two spectacle frame members. The enlargement serves to hold the hinge part in a spectacle frame member after it has been pressed into the softened member.
Patent GB-521770-A (GB)
Title: Telescopic ophthalmic lenses
IPC: G02C7/08
Filed: 1938-11-25
Abstract: 521,770. Spectacle lenses. UNITED KINGDOM OPTICAL CO., Ltd., and VOGEL, R. F. J. Nov. 25, 1938, No. 34420. [Class 97 (i)] In a lens comprising a main portion 1 and an insert built up of two or more minor lenses B, C, the glasses of the minor lenses are chosen so that chromatic and spherical aberrations are corrected. Lens B may be positive and of barium crown glass having a refractive index 1À610 and dispersive power 55À8, and lens C may be negative and of barium flint glass having a refractive index 1À653 and dispersive power 46. The lenses B, C may be spaced apart by barium crown glass F which may be integral with the lens B. A lens D applying a correction the same as that of the main portion 1 may be secured to the lens C. Specification 445,083 is referred to.
Patent GB-792554-A (GB)
Title: Speed variator for mechanical transmissions, with continuous variation of the gear ratio
IPC: F16H15/22
Filed: 1956-11-12
Abstract: 792,554. Continuously variable speed gearing. COMIDA, F. Nov. 12, 1956 [Nov. 10, 1955], No. 34468/56. Class 80 (2). A continuously variable speed friction gear comprises a pair of conical discs in frictional contact with the cylindrical rim of a wheel, the axes of the discs and the wheel being in the same plane. A driving shaft 1 carries gears 2 meshing with teeth formed on the peripheries of two conical discs 3 supported in bearings 6 urged mutually inwardly by springs 5. The axes of the discs are inclined such that the generators of the conical faces are parallel in the plane of the axes. A wheel 4 having a cylindrical rim is frictionally driven by the discs and is supported for rotation on a member 10 which is movable by a screw means 11 for change of ratio. The wheel 4 drives a driven shaft 9 through bevel gears 7, 9. In a second embodiment (not shown), two pairs of discs having peripheral teeth meshing with gears on the driving and driven shafts are used in conjunction with a movable idler wheel. In a further embodiment, Fig. 4, a shaft 16 drives a shaft 1 through bevel reverse gearing 17, 18, 19, the shaft 1 having a pair of gears 2 meshing with gears 3 driving a first pair of discs 3a through camming rollers 29 mounted on resilient spindles 30. The rollers 29 acting with seats of larger radius provide increased pressure between the discs and the wheel 4 for increased torque transfer. Teeth on the peripheries of the discs 3a mesh with teeth on gears 33 driving a second pair of conical discs 33a also through camming rollers. The wheel 4 is carried on a spindle 21, journalled in a longitudinally adjustable housing, and driving an output shaft 24 through bevel gears 22, 23. The housing may be moved by pneumatic or hydraulic pistons in cylinders integral with the gear casing controlled by manual or automatic servo devices.
Patent GB-1160136-A (GB)
Title: Improvements in and relating to a Radial-Flow Fan with Axial Exhaust
IPC: F04D29/42
Filed: 1966-08-01
Abstract: 1,160,136. Roof ventilators. NORDISK VENTILATOR CO. A/S. 1 Aug., 1966 [2 Aug., 1965], No. 34486/66. Heading F4V. [Also in Division F1] A roof ventilation cowl 5 containing a motordriven fan unit (see Division F1), is provided with a skirt 14 for preventing rainwater from passing down along wall 9 to the air inlet 6, and an opening 15 for escape of rainwater entering the cowl through the air outlet.
Patent GB-1461117-A (GB)
Title: Vehicles incorporating a bottle cap removing facility
IPC: B60N3/00
Filed: 1974-08-06
Abstract: 1461117 Bottle cap remover for vehicles J C S WHITE 21 May 1975 [6 Aug 1974] 34505/74 Heading B7B A bottle cap remover in the form of an aperture or recess is provided in a structural member of a vehicle. The aperture or recess may be formed in some part of the dashboard or in the boot lid stiffeners. In one embodiment (Figs. 1-3, not shown) the remover is in the form of a generally rectangular aperture formed in a body member; the lower edge of the aperture may be turned back to provide a cap engaging lip. In another embodiment the remover is formed by a notch 15 in a vehicle stiffening member.
Patent GB-412854-A (GB)
Title: An improved internal form for conduits, sewers and the like
IPC: F16L1/038
Filed: 1933-12-08
Abstract: 412,854. Casting conduits in situ. DORAN, W. E., 26, Courtfield Gardens, Earl's Court, London. Dec. 8, 1933, No. 34575. [Class 20 (ii).] A form for making concrete conduits, sewers and the like comprises a flexible curved member 1 of sheet material supported by an internal framework having expanding and contracting mechanism, the gap between the longitudinal edges 2 of the member 1 being closed by an adjustable shutter 4. In the construction shown, the member 1 is of sheet steel and its longitudinal edges 2 are reinforced by bars 3 which are slotted to receive the arms 9, Fig. 2, of the expanding and contracting mechanism. This mechanism is screwed to a pair of sole-plates 11 of a frame 7 running longitudinally of the member 1, and comprises two end brackets 10 to each of which a pair of arms 9 are pivoted. These arms are adapted to be connected by bolts or bars to angle-brackets 8 mounted on the member 1. To the head 13 of each bracket is pivoted a bell-crank lever 16, the vertical arm of which engages, by a pin-and-slot connection, with a nut mounted on a screw-threaded shaft 12 journalled in both brackets. A pair of vertical arms 20 adjustably engage with a nut 17 mounted in the horizontal arm of each lever, and the upper ends of the arms are connected to the shutter 4. The vertical height of the shutter is adjusted by rotating a handwheel 14 on the shaft 12. The arms 20 each comprise-two spaced bars through which extends a shaft 22 having a handwheel 47. The expansion and contraction of the arms 9, upon rotation of this handwheel, is effected by links 26-29 connected to the arms and to screwed sleeves 23, 25, which are mounted respectively on right and left-handed screw-threaded portions of the shaft. A further sleeve 24 is secured to the shaft and engages in slots 32 of two plates 31, the slotted ends of which engage over pins 46 on longitudinal bars 33 connected to the arms 9. By this means, the shaft 22 is prevented from moving longitudinally. The end of the shaft remote from the handwheel may be coupled to the shaft of adjacent similar mechanism so that a series of forms may be expanded or contracted simultaneously.
Patent GB-627321-A (GB)
Title: Means for regulating electric motor-driven apparatus on vehicles
IPC: E01C19/17
Filed: 1946-11-22
Abstract: 627,321. Control of D.C.'motors. SCAMMELL LORRIES, Ltd., HUGH, P. G., and HALL, W. F. Nov. 22, 1946. No. 34607. [Class 38(iii)] Means for regulating electric motordriven apparatus on vehicles, so as to synchronize the operation of the apparatus with the speed of the vehicle, comprise a small generator driven by the vehicle wheels or the road surface which produces an electric current affecting the output of the main driving motor, either by varying. resistance in the field circuit thereof or by regulating the motor-field strength by means of a negative booster generator controlled by means of a thermionic valve. The motor may drive a pump for spraying a road with tar, at a speed in accordance with the speed of the vehicle so that the same thickness of the tar-layer is maintained despite vehicle speed-variations. The speed-responsive generator 19 is connected, in opposition to a battery 18, in the gridcircuit of a thermionic valve 17 through which a field winding 16<SP>1</SP> of a negative booster 16 is supplied. The booster is connected, in opposition to a main supply source, in series with a shunt field winding 6<SP>1</SP> of a pump-motor 6. At low vehiclespeeds of the valve is substantially non-conductive and the voltage of the machine 16 is low, so providing strong field excitation and low speed operation for the motor 6. As the vehicle-speed increases, the voltage of the negative booster increases to reduce the motor field excitation. In a modification, the driving motor for the pump is controlled by a small generator operating at a speed synchronized with that of the vehicle and supplying a permanent magnet torque motor which regulates the resistance of the field circuit of the motor 6. Specifications 627,319, [Group XXVI], and 627,320, [Group X], are referred to.
Patent GB-866432-A (GB)
Title: New carboxylic acid amides substituted at the nitrogen atom and ª--carbon atom
IPC: C07C233/00
Filed: 1957-11-06
Abstract: The invention comprises amides of the general formula: <FORM:0866432/IV (b)/1> (wherein R represents hydrogen or a methyl or ethyl group, R1 represents hydrogen or a C1-4 alkanoyl radical, R2 represents a C1-4 alky radical, and R3 represents hydrogen or a C1-4 alkyl or alkoxy radical), medicinal preparations containing them (see Group VI), and the preparation of the amides by the following processes: (a) reacting the appropriate aralkylamine with the appropriate acid or functional derivative thereof (preferably one in which R1 represents an alkanoyloxy radical, which, if a final product in which R1 represents hydrogen is required, should be capable of subsequently being easily split off, e.g. by alkaline or acid hydrolysis); (b) (when R1=H) reducing the corresponding b -ketocarboxylic acid amides; (c) (when R1=H) treating the corresponding b -aminocarboxylic acid amines with an alkali metal nitrite in the presence of a dilute mineral acid; and (d) (when R1= alkanoyl) acylating the compounds in which R1=H).  b -Keto-valeric and -caproic acid aralkylamides are prepared by reacting the corresponding acetoacetic acid aralkylamides (prepared from diketene and the appropriate arakylamines) with a propionyl or butyryl halide and then eliminating the a -acetyl group by acid or alkaline hydrolysis.  b  - Aminobutyric acid-[2-ethyl-2-phenyl-n-butyl-(1)]-amide is prepared by catalytic hydrogenation of acetoacetic a acid-[2-ethyl-2-phenyl-n-butyl-(1)]-amide in methanol saturated with ammonia.  Specification 645,886 is referred to.ALSO:A medicinal preparation comprises an amide of the formula <FORM:0866432/VI/1> (wherein R is hydrogen, methyl or ethyl, R1 is hydrogen or a C1-4 alkanoyl radical, R2 is a C1-4 alkyl radical and R3 is hydrogen or a C1-4 alkyl or alkoxy radical) and a pharmaceutically suitable carrier.  Tablets and injection solutions are referred to. Specification 648,886 is referred to.
Patent GB-782727-A (GB)
Title: Improvements in or relating to photoflash lamps
IPC: F21K5/08
Filed: 1955-12-05
Abstract: A lacquer, particularly suitable for coating the outer surface of photoflash lamps comprises 75 to 40 per cent by weight cellulose acetate butyrate and 25 to 60 per cent by weight of a partial acetal of formaldehyde, the acetal consisting of 43 to 80 per cent by weight of polyvinyl formal, 20 to 50 per cent by weight of polyvinyl acetate and from 0 to 7 per cent by weight of polyvinyl alcohol.  Alcohols having boiling points of 97 DEG  C. or higher may be used as solvents, xylene being incorporated to inhibit sagging of the coating.  To increase the thermal resistance of the lacquer 10 to 30 per cent of the butyrate may be replaced by polymerized resins and silicones such as "Plexiglas" and "Plaskon" (Registered Trade Marks). Unpolymerized polyesters, epoxy resins and unpolymerized urea formaldehyde resins may be substituted for the polymerized resins. As a polymerization catalyst, 2 per cent by weight of the polyester of benzoyl peroxide is also added.  Tackiness may be inhibited by the addition of colourless inorganic fillers such as milled fibreglass, calcium orthophosphate, magnesium silicate, aluminium silicate and silica.  The coating may be 95 to 99 per cent by weight of cellulose acetate butyrate and from 5 to 1 per cent by weight of a cross-linking agent which is combined with free hydroxyl groups in the butyrate.  The cross-linking agent may be glyoxal or citric acid.
Patent GB-869301-A (GB)
Title: Fibres and filaments having improved crimp characteristics and method for their production
IPC: D01D5/30
Filed: 1957-11-08
Abstract: A composite artificial filamentary material possessing a crimp or potential crimp comprising at least two different synthetic polymers so distributed in the material that it has along its length a cross-section made up of two or more distinct components consisting of the different polymers arranged eccentrically, one of the components containing ionizable groups which give it a longitudinal swellability greater than that of the other or others is made by feeding the components separately and eccentrically to a shaping orifice and extending the components simultaneously through the orifice and solidifying or coagulating them. Longitudinal swellability is defined, as the power of reversibly swelling in the direction of the fibre axis.  Specified component polymers are polyacrylonitrile, polyamides, polyesters, polyurethanes, polyureas, polyethylene, P.V.C., polyvinylidene chloride and copolymers thereof. The polymers may take up a sheathcore or side-by-side relationship. The ionizable groups which are preferably introduced by copolymerization with a comonomer containing them, may be either attached to a polymer or copolymer forming the component, or the component may be a physical admixture of nonionizing polymer with another polymer or copolymer containing such ionizable groups.  The ionizable groups may be basic or acidic e.g. carboxylic, and organic sulphonic and phosphoric acid groups.  The component of highest longitudinal swellability may contain 1-15% of a neutral disperse dye-enhancing modifier.  In an embodiment two or more streams of different polymers are dry, wet or melt spun with subsequent drawing to form oriented composite filaments.  Examples are given. Specification 805,033 is referred to.
Patent GB-1428560-A (GB)
Title: Producing a surgical suture
IPC: A61L17/00
Filed: 1973-07-23
Abstract: 1428560 Sutures ETHICON INC 23 July 1973 [24 July 1972] 34967/73 Heading A5R A multifilament suture may be made by winding a strand of suture material onto a rack under tension, dipping a section, intended for eventual cutting, of the wound strand into a supply of binder material while under tension removing the strand on the rack from the binder supply and air drying the binder-coated strand before releasing it from the rack. Sutures may be manufactured, and swaged on to surgical needles, as described in Specification 1428559. The suture may be braided, and made of resin, e.g. polyester or epoxy resin, synthetic polymers, or cotton, linen or silk.
Patent GB-1472608-A (GB)
Title: Duplex filter system
IPC: B01D35/12
Filed: 1974-08-08
Abstract: 1472608 Duplex filter circuit CATERPILLAR TRACTOR CO 8 Aug 1974 [10 Aug 1973] 35042/74 Heading BID A duplex filter circuit, e.g. for supplying liquid fuel to an engine, comprises two filters 9, 9a which are used alternately and each provided with a restricted air vent 13, 13a leading back to supply tank 10. Fuel is delivered from tank 10 by pump 2 via heat exchanger 3 and two way valve 4 to one of the filters. Valve 18 may be opened to bleed fuel into the filter which is out of use (9a as shown) which expels the air therefrom. Air vent 13a resists the passage of liquid, so that when filter 9a is filled with liquid the pressure therein rises and downstream valve 11a opens. When gauges 19, 19a indicate equal pressures, valve 4 may be adjusted to deliver liquid direct to filter 9a and valve 18 is closed. Filter 9 then depressurises via vent 13 and when gauge 19 indicates that pressure is down its element may be changed. Each filter has a pressureactuated by-pass valve 21, 21a.
Patent GB-876829-A (GB)
Title: Improvements in or relating to slings
Inventor: BARNES DONALD GERRARD
IPC: B66C1/18
Filed: 1959-10-16
Abstract: 876,829. Web slings. BRITISH WEDGE WIRE CO. Ltd. Oct. 16, 1959, No. 35052/59. Addition to 795,489. Class 78 (4). The web of a woven-wire sling is formed of closed links 10 joined by transverse rods 12, and is connected to metal handles 14, 15 by laterally spaced chain links 16. The whole of the web may be formed by links similar to the links 16, but in the form shown the web is formed of spiral links 10 welded at their ends each to one of the rods. The handle 14 can be passed through a slot in the handle 22 to form a choke sling.