baber/WOPTO huggingface dataset:
Patent GB-1474957-A (GB)
Title: Photographic camera
IPC: G03B17/04
Filed: 1974-07-25
Abstract: 1474957 Camera EASTMAN KODAK CO 25 July 1974 [30 July 1973 3 Aug 1973] 32920/74 Heading G2A A camera comprises two specular plane mirrors, at least one of which is collapsible, by which an image is projected on to sheet film 46, within a removable film holder 44, from the rear side of the camera. The lower mirror may be at an angle of 35 degrees to the film plane in the operative position. The camera also comprises an objective 24, view-finder 32, rotatable flash unit socket 34, lens protection slide plate 36 having slide button 38, film holder compartment 40 and at least partially collapsible light-proof cover 106. As shown, an inwardly biased upper mirror 86 and an outwardly biased lower mirror 94 are supported by pivoted U-shaped links 88 and 96 respectively which are pivotally inter-connected at each side at end and intermediate points respectively by short links 120, link 88 having pairs of pins 124 and 144 at end and intermediate positions respectively, and end 136 of link 96 being engaged with pins 124 in the extended position Figs. 4 and 5 and with pins 144 Fig. 7 in the collapsed position. Alternatively, each U-shaped link may be interconnected at end-points, by short slotted links Fig. 8 and 9 (not shown). In further embodiments, the mirrors collapse to a flat position Figs. 12-14 (not shown) and only one mirror collapses Figs. 10, 11 and 14 (not shown).
Patent GB-534123-A (GB)
Title: Improved machine for wrapping adhesive tape round canisters, boxes, tins or other containers or packages
IPC: B65B7/28
Filed: 1939-12-28
Abstract: 534,123. Adhesive tape applying. KININMONTH, C. P., and ADHESIVE TAPES, Ltd. Dec. 28, 1939, No. 32998. [Class 73] An appliance for affixing adhesive sealing tape to lidded containers is adapted to fold over the severed end of the tape so as to form a tab by which the tape may be removed. For this purpose the container is placed on a table 2 and rotated by hand with the end of the tape 41, led from a supply 42, in contact therewith. The tape passes between a roller 46 and rod 47. When the tape has been applied round the container, the tape, near the container, is brought into contact with a roller 28 having an aperture 48 to which suction is applied from a cylinder 31 the piston of which is operated on the depression of a pedal. In the last part of the stroke the roller is rotated to carry the end of the tape, which has been severed by a simultaneously operated, pivoted knife 9a between the rollers 28 and 49 to fold it.
Patent GB-643044-A (GB)
Title: Improved apparatus for the preparation of carbon dioxide baths
IPC: B01F3/04
Filed: 1947-12-15
Abstract: 643,044. Carbonated baths; supply fittings. DEROME, P. L. Dec. 15, 1947, No. 33049. Convention date, Dec. 23, 1946. [Class 26] [Also in Group VI] Apparatus for carbonating bath water comprises a carbonating tank 1 provided with an outlet 4 and cock 18 which admits water to the bath through a pivoted pipe 29. A control valve 21 below the cock 18 is controlled by a float 26 so that the flow of water is restricted on a person entering the bath, a chain attached to the float and to the pipe 29 ensuring that the carbonated water is directed at the person at such time. An electric fan 37 and resistance element 39 ensure that warm air is blown over the surface of the bath to remove carbon dioxide, the fan and element being controlled by means of the actuating handle 19 of the cock 18 and a switch 40.
Patent GB-889648-A (GB)
Title: Novel heparin process
Filed: 1959-09-30
Abstract: Heparin is isolated in the form of a waterinsoluble heparin complex from an aqueous animal tissue extract containing it by treating the extract with a quaternary ammonium salt having a solubility in water of at least 2%, and in which one of the valencies of the nitrogen atom of the salt carries an essentially aliphatic hydrocarbon chain of at least 8 carbon atoms.  The quaternary ammonium salt may have the formula <FORM:0889648/IV (a)/1> wherein X is any anion that does not render the salt water-insoluble, e.g. chloride, bromide or sulphate, and R is the essentially aliphatic hydrocarbon chain of at least 8 carbon atoms which may be part of a heterocyclic system together with other R1 radicals and which may be interrupted by oxygen, double bonds, nitrogen and aromatic rings, and wherein the R1 radicals may be alkyl containing 1-7 carbon atoms or aralkyl, alkenyl, alkoxy, polyalkoxy, or chloroalkyl radicals. The three R1 radicals may be the same or different.  Many such compounds are specified of which the chief used in the examples is a commercial-mixture containing 90% hexadecyl trimethyl ammonium chloride, 6% octadecyl trimethyl ammonium chloride, and 4% octadecenyl trimethyl ammonium chloride.  The water-insoluble heparin complex thus obtained may be redissolved in a salt solution and the free heparin precipitated with a water-miscible organic solvent.  The initial animal tissue may be beef small intestines, beef lung, hog duodenum, hog liver, hog intestinal mucosa and dog liver.
Patent GB-1016749-A (GB)
Title: Injection molding machines
IPC: B29C48/395
Filed: 1964-08-14
Abstract: 1,016,749. Injection moulding machines. LESTER ENGINEERING CO. Aug. 14, 1964 [June 12, 1964], No. 33256/64. Heading B5A. An injection moulding machine has an axially reciprocable screw 9 provided with a non-return valve assembly which constitutes an anti-friction bearing support for the piston head 15 of the screw. As shown, the non- return valve assembly comprises a series of rollers 20 which co-operate with conical seats 21 at the ends of passages 17 in the head 15. The passages 17 connect with channels 16 which are of progressively decreasing circumferential width in the direction of flow.
Patent GB-391524-A (GB)
Title: Improvements in or relating to suction cleaners and rotatable agitators therefor
IPC: A47L9/04
Filed: 1931-12-01
Abstract: 391,524. Vacuum - cleaner brushes. HOOVER, Ltd., 229, Regent Street, London.-(Hoover Co. ; North Canton, Ohio, U.S.A.) Dec. 1, 1931, No. 33259. [Class 19.] A vacuum cleaner is provided with a rotary agitator 4, Fig. 1, detachably mounted on the nozzle and having relatively long bristled brushes 9 set in grooves 8 extending radially to or beyond the axis of the agitator, which however has a modified axle so shaped as not to interfere with the brush seat or groove. The agitator 4 consists of two similar cylindrical shells 5, 6, linked at 7 to,form a driving pulley. Diametrically opposed grooves 8 are provided, one in each of the body portions 5, 6 to accommodate the brushes 9, pressed outwards by springs 14 to prevent chattering. An axle member 17 shaped as shown connects stubs 16 which are thus rigidly held in alignment. The stub 16 projects into an aperture in an endplate 13, Fig. 6, of the agitator. An antifriction bearing 18 is held on the stub 16 by a nut 19 with a deformable washer 20 in between. A flange 21 on a stationary member 22 surrounds, and frictionally engages, the outer race of the bearing 18, the end member 22 being held by a clip 23, Fig. 1, inside the suction nozzle. In a modification, Fig. 7, the stationary member 22 has an enlarged central aperture through which the nut 19 projects. Upon removal of the nut, the member 22 and the bearing can be removed as a unit.
Patent GB-370964-A (GB)
Title: Process for the manufacture of improved fatty acids from low quality fatty oils and fats
IPC: C08F20/64
Filed: 1930-11-05
Abstract: Improved fatty acids are produced from low quality animal and vegetable oils containing unsaturated fatty acids by esterifying the unsaturated acids with an aliphatic alcohol, then polymerizing by heating to say 200-300 DEG  C., but not to the boiling-point, if desired while passing through a current of inert gas, with or without reduced pressure, and finally splitting the polymerized substances, after which treatment the free fatty acids are recovered.  The esterification is carried out in any usual and convenient manner, for example by refluxing the initial material with three times the theoretical quantity of a monohydric alcohol, preferably in the presence of about 5 per cent by weight of the alcohol of sulphuric acid or like dehydrating agent.  If the esterification is carried out with glycerol, it should be used in quantity corresponding to that required for the production of triglycerides, the reaction being carried out at a pressure of 20 millimetres of mercury and at 170-230 DEG  C.  The initial material may be purified by pretreatment with a dilute mineral acid or a bleaching earth, or by emulsification with water or an agent capable of precipitating mucilaginous matter, such as a solution of acetic acid, phosphoric acid, alum, or trisodium phosphate.  Examples of the treatment of acid train oil, train oil fatty acids, and soapstock fatty acids are given.  Specifications 262,134, [Class 91, Oils &c.], 306,453, 322,496, [both in Class 2 (iii), Dyes &c.], and 341,390, are referred to.ALSO:Improved fatty acids are produced from low quality animal and vegetable oils containing unsaturated fatty acids by esterifying the unsaturated acids with an aliphatic alcohol, then polymerizing by heating to say 200-300 DEG  C., but not to the boiling point, if desired while passing through a current of inert gas, with or without reduced pressure, and finally splitting the polymerized substances, after which treatment the free fatty acids are recovered.  The esterification is carried out in any usual and convenient manner, for example by refluxing the initial material with three times the theoretical quantity of a monohydric alcohol, preferably in the presence of about 5 per cent by weight of the alcohol of sulphuric acid or like dehydrating agent.  If the esterification is carried out with glycerol, it should be used in quantity corresponding to that required for the production of triglycerides, the reaction being carried out at a pressure of 20 millimetres of mercury and at 170-230 DEG  C.  The initial material may be purified by pretreatment with a dilute mineral acid or a bleaching earth, or by emulsification with water or an agent capable of precipitating mucilaginous matter, such as a solution of acetic acid, phosphoric acid, alum, or trisodium phosphate. Examples of the treatment of acid train oil, train oil fatty acids and soapstock fatty acids are given.  Specifications 262,134, 306,453, 322,496, [all in Class 2 (iii), Dyes &c.], and 341,390, [Group III], are referred to.
Patent GB-342719-A (GB)
Title: Improvements in and relating to paper bags or envelopes
IPC: B65D27/08
Filed: 1929-11-04
Abstract: 342,719. Envelopes. LODGE, J. A., Main Street, Wilsden, Bradford, Yorkshire. Nov. 4, 1929, No. 33462. [Class 146 (ii).] A bag, packet, &c. having duplicate pockets adapted to contain two powders, e.g. seidlitz, is formed from a single sheet of paper as follows :-The rectangular blank is folded to form substantially equal portions 1, 2, 3, and again folded at F and F<1>, the portions X being then removed. 3 is then folded downwardly on to 2 and secured thereto by adhesive &c. along its outer edge and bottom. Similarly, 1 is secured to 3. The bottom flap B<1> is then folded on to 1 and secured, the powders inserted into the pockets, and the packet sealed by folding and securing the flap B. The distance of the fold F<1> from its end is preferably greater than the distance of the fold F from its end. Specification 11939/12, [Class 146 (ii), Stationery &c.], is referred to.
Patent GB-356993-A (GB)
Title: Improvements in or relating to the suspension of curtains, blinds or the like
IPC: A47H15/02
Filed: 1930-11-07
Abstract: 356,993. Suspending curtains. VOSSLOH-WERKE GES. (formerly KLEINEISENWERK VOSSLOH GES.), Werdohl, Westphalia, Germany. Nov. 7, 1930, No. 33472. Convention date, Nov. 7, 1929. [Class 52 (v).] In curtain-suspending devices of the kind in which a tubular track is provided with a longitudinal slot through which suspension hooks &c. carried by rollers depend, each roller 3 is provided with flanges 4 which extend into the slot to guide the roller. The edges 5 of the slot may be rounded as shown to closely fit the roller which is provided with a central annular groove to receive a suspension hook &c. 1.
Patent GB-751349-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K9/20
Filed: 1954-11-19
Abstract: 751,349. Cooling dynamo-electric machines. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 19, 1954 [Nov. 25, 1953], No. 33560/54. Class 35. In a machine particularly for use on aircraft, the inside surface of the commutatar is cooled by vaporizable liquid. As shown, air enters at 22 and leaves at 24 after passing through ducts in the armature and about the field coils and in addition, water from a tank 25 is passed through pipes 26, 28, 30 to a nozzle 31 whereby it is directed to the internal surface of the commutator segments 15, the V-rings having apertures 17 for the passage of the fluid. A thermostatic element 33 within the field coils may regulate the flow of water.
Patent GB-1077413-A (GB)
Title: Improved electrostatic developer mix
IPC: G03G9/097
Filed: 1964-08-18
Abstract: 1,077,413. Electrophotographic developers. ADDRESSOGRAPH-MULTIGRAPH CORPORATION. Aug.18, 1964 [Aug.30, 1963], No.33682/64. Heading G2H. An electrophotographic developer comprises 1 part of electroscopic powder and 5 to 50 parts of a triboelectric carrier, having thereon a uniform coating of an inert liquid having a tackifying value not exceeding that of glycerol under the same conditions, preferably in an amount of 0À01% to 1À0% by weight of the carrier particles. Suitable liquids are organopolysiloxanes, hydrocarbon vegetable, fish and animal oils, glycerol, water, isopropanol, triethanolamine, fatty acid esters of glycol ethers, and C 12-18  alkylamine . surfactants. The carrier may be iron, magnetite, cobalt, nickel, or a ferrite. The electroscopic powder may be a resin (e.g. polystyrene, acrylic resins, rosin, asphalt, polyamide, maleic anhydride-polyhydric alcohol modified rosin, gilsonites, or vinyl resins) containing a pigment (e.g. carbon black) or a dye (e.g. nigrosine).
Patent GB-1360431-A (GB)
Title: Composite plastics pallets
IPC: B65D19/00
Filed: 1971-07-19
Abstract: 1360431 Load handling pallets CHEMISCHE WERKE HULS AG and VEBA-CHEMIE AG 19 July 197 [20 July 1970] 33699/71 Heading B8H A load handling pallet has a high density plastics material lattice framework with the cavities thereof filled with an expanded plastics material which together with the framework define the upper and lower decks. The materials may be the same, e.g. polystyrene in which case they are fused together during the manufacture of the pallet, or the materials may be different. The framework may have cut-outs or projections, Fig. 3 (not shown), to assist in the connection between the framework and the filler. In a further embodiment, Fig. 4 (not shown) the corner pieces (12) are formed of a lattice framework, the remainder of the pallet being formed of expanded material.
Patent GB-1127988-A (GB)
Title: Process for the preparation of urethanes
IPC: C07D239/42
Filed: 1966-07-27
Abstract: 1,127,988. Preparation of urethanes. AMERICAN CYANAMID CO. 27 July, 1966 [15 Oct., 1965], No. 33747/66. Heading C2C. [Also in Division C3] Urethanes are obtained by reacting, in the presence of a catalyst consisting essentially of a noble metal and a Lewis acid, an organic hydroxyl-containing compound, an organic nitro compound and carbon monoxide in an amount of at least 3 moles per mole of nitro group, said reaction being conducted under substantially anhydrous, molecular hydrogenfree, superatmospheric pressure conditions of at least 40 p.s.i. and at an elevated temperature above 60 C. but below that at which the starting materials or the product decompose. The noble metal, which may be platinum, palladium, ruthenium, rhodium, osmium or iridium and which is suitably employed in an amount of 10-1 to 10<SP>-5</SP> mole per mole of nitro group, may be in a metallic or chemically combined state and may be employed with or without a support. The Lewis acid, which preferably contains a halide anion and which is suitably employed in an amount of 5 x 10<SP>-2</SP> to 5 x 10<SP>-4</SP> mole per mole of nitro group, may be formed in situ. The process may be effected batchwise or continuously and an inert solvent, e.g. aromatic, haloaromatic or haloaliphatic hydrocarbons, may be present. In specific examples, the catalyst systems employed are ferric chloride/ palladium on carbon and ferric chloride/ rhodium on carbon. Reference has been directed by the Comptroller to Specifications 993,704,1,080,094 and 1,089,132.
Patent GB-836788-A (GB)
Title: Improvements in tube bending machines
Inventor: HALLY ALLAN
IPC: B21D7/024
Filed: 1955-11-25
Abstract: 836,788. Angular bending. CHAMBERLAIN INDUSTRIES Ltd. Nov. 26, 1956 [Nov. 25, 1955], No. 33872/55. Class 83 (4). A tube and rod bending machine of the type in which a rotary centre forming die with an arcuate peripheral part, radiused to the inner bend of the work, is turned about its axis with the work clamped to it just in advance of the bend to be produced is characterized in that a work clamping member to clamp the work to the rotary centre forming die embraces the appropriate part of the work and a member to apply the clamping load to the clamping member. The former comprises an annulus 1 secured on a rotated main shaft 2 and having a J-shaped flange 1a, 1b carrying channelled segments 3, 4. A tube 11 to be bent is clamped in the straight segment 4 by a strap 10, one end 10b of which engages the tube and shoulders on the segment 4 and its other end 10a is engaged by a head 12 or distance piece of an hydraulic ram 8 located against a flange 6 on a web extending from the former. The ram 8 may be detachably secured to the flange 6 and has a handle 8a to facilitate its positioning and removal. Hydraulic fluid is supplied through a union 9 and may be fed thereto from the centre shaft of the machine through a rotary distributer. Single- or double-acting rams may be used and two or more rams may be mounted side by side. A manually operated pump, feeding to the ram, may be anchored across the top of the former. The hydraulic feed may be controlled so that clamping and/or unclamping is automatic. The endless strap 10 may be replaced by a straight part having a hook at each end. The ram may form a permanent part of the former.
Patent GB-1364491-A (GB)
Title: Complementary power amplifier
IPC: H03F3/30
Filed: 1971-07-20
Abstract: 1364491 Transistor amplifying circuits MOTOROLA Inc 20 July 1971 [26 Aug 1970] 33925/71 Heading H3T A power amplifier comprises a pair of NPN transistors 41, 42 in Darlington connection and a pair of PNP transistors 51, 52, also in Darling- tion connection, the transistors 42, 52 being in series connection between the positive and negative supply terminals 19, 20 respectively, and their emitters being connected to the output terminal 60 via resistors 43, 53 respectively. The bases of the transistors 41, 51 are connected to a bias chain which includes current sources comprising transistors 31, 37, and also includes diodes 21, 22 which comprise lateral transistors with collectors and bases strapped. The bias chain also includes transistors 24, 27 which have collectors and bases strapped over resistors 25, 28 respectively. The signal input is applied to the junction of diodes 12, 22 from a highgain pre-amplifier 15: the presence of the resistors 25, 28, causes the output transistors 42, 52 to be conductive, and the offset at the output terminal 60 may be adjusted by variation of the values of these resistors. The peak output currents in the transistors 42, 52 are limited by means of transistors 112, 122, respectively, the base biases for which are derived from the resistors 43, 53 respectively; the collector circuits of transistors 112, 122, when these transistors are biased conductive form current shunts on the input circuits of transistors 41, 51 respectively. Diodes 111, 112 which comprise lateral transistors with collectors and bases strapped prevent the application of reverse currents to the input of the amplifier. The limiting levels may be reduced by shunting resistors 43, 53 with further resistors, or increased by opening the links 44, 113 and 113, 123 and inserting further resistors. Current sources.-The current source transistors 31, 37 are biased from a master current source comprising a transistor 70, the collector of which is connected to the positive supply point 19 via resistor 71 and its emitter to the negative supply point 20 via resistors 74, 76 and diodes 73, 75. The base of transistor 70 is biased by means of Zener diode 81 and a constant current source comprising the collector to emitter path of lateral transistor 79, the base bias of which is derived over NPN transistor 95 from the potential drop across resistor 71. A high value resistor 100 provides current for Zener diode 81 to enable the circuit to come into operation. Current source transistor 37 is biased directly from the junction of resistor 74 and diode 75, and this point also provides bias for an auxiliary transistor 90 which provides emitter currents for transistors 94, 95. The transistor 94 is of NPN type, its base being biased from the voltage drop across resistor 71, and its collector to emitter potential provides base bias for constant current transistor 31, which is of the lateral type.