baber/WOPTO huggingface dataset:
Patent GB-248748-A (GB)
Title: A method of, and apparatus for, producing artistic decorative effects by optical means
IPC: G09F19/18
Filed: 1926-03-02
Abstract: 248,748. Brunner, R. March 2, 1926. Optical - projection apparatus; kaleidoscopic apparatus. - Designs &c. on opaque or other bases are projected on to a translucent surface from which they are again projected by a kaleidoscopic mirror system and a suitable lens system; the translucent surface may itself bear colours or designs and be associated with transparent material carrying a design &c. As shown in Fig. 7. a design on an opaque base a is illuminated by lamps l, and is projected by lens elements m and a mirror o<3> on to a translucent surface g. A roll film f bearing designs is movable over the surface g, and is carried in a casing h rotatable on the tube e. A transparent object box containing solid or liquid substances may also be provided, and the whole design is projected by kaleidoscopic mirrors q, an objective n and a mirror o on to a horizontal surface. Another design on a transparent base may also be projected on to the surface g by a second lamp and optical system, and a modification is described in which two designs on transparent bases are projected by one light source and condenser and two objectives. Various systems of mirrors q are described in the Specification. and the mirrors may be plane or corrugated. Figs. 1 and 2 show sectional elevations of an apparatus for projecting vertically from a drawing &c. carried between a plate 64 and a glass sheet 65, and for projecting horizontally from designs on transparent films. The vertical projection system comprises an objective 45, several exchangeable mirror systems in a slidable holder 39, an objective 42, and adjustable mirrors 53, 54. Means are provided for rotating the mirror systems and an object holder 14. The horizontal projection system comprises a condenser 7, two movable and rotatable films 13, 24, exchangeable rotatable mirror systems 27 in a horizontally slidable holder, and an objective 42. A further modification is described in which projection may be effected alternatively from designs on opaque bases or on transparent bases.
Patent GB-355769-A (GB)
IPC: B24B19/02
Filed: 1930-02-24
Abstract: 355,769. Grinding screw -threads. LINDNER, H., 57, Fruchtstrasse, Berlin. Feb. 24, 1930, No. 6038. Convention date, Feb. 27, 1929. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 60.] The subject-matter of this Specification is identical with that of Specification 334,828, [Class 60, Grinding or abrading &c.].
Patent GB-196759-A (GB)
Title: Improvements in or connected with screw drivers or like small tools
IPC: B25B15/04
Filed: 1922-03-01
Abstract: 196,759. Charlton, J. H. March 1, 1922. Ratchet gearing.-In ratchet screwdrivers or other small tools of the kind comprising a pair of pawls controlled by setting a spring so that either or both of them may be engaged with the ratchet wheel, the pawls are controlled by a segmental spring metal strip movable within a ring fixed to the handle ferrule and adapted to be set in any one of three circumferential positions by means of a projecting pin. The pawls 12, 13 co-acting with the ratchet wheel 7 on the screwdriver or other small tool 6 are provided with pivot pins 12<a>, 13<a> engaging bent over lugs 11<a> on a U-shaped member 11, which is fixed in position by grooves 8<a> in a ring 8 on the end of the handle 10. These grooves also serve as abutments for the pivot pins of the pawls, which are engaged by a spring strip 15 secured to a stud 14 projecting through a three-notched slot 8<b> in the sleeve 8. When the stud is at either end of the slot one pawl is lifted, the tool being then adapted for ratchet action in one or other direction, whilst, with the stud in mid position, both pawls engage the ratchet and the tool may be diiven in both directions.
Patent GB-1517623-A (GB)
Title: Control lever assembly
IPC: F16H63/30
Filed: 1976-02-17
Abstract: 1517623 Hydrostatic transmission control; linkwork ALBARET SA 17 Feb 1976 [20 Feb 1975] 06155/76 Headings F2W and F2K A control lever assembly, for controlling the pump of a hydrostatic transmission through a Bowden cable 10, has the cable 10 pivotally connected to a lever 20 which is slidably mounted in a sleeve 23 pivoted in a frame 12 by a pin 24, the lever 20 being connected to a further lever 14 by a pin 21 and a joint 21A, 31A and the lever 14 is pivoted by a pin 16 in the frame 12. The lever 14 has a knob 15 for movement by an operator or alternatively the lever 20 may be directly moved by the operator. The arrangement is such that initial movement of lever 14 away from the neutral position shown causes a relatively small movement of cable 10 to increase the control over the pump at small outputs, the amount of movement of cable 10 for a certain movement of the lever 14 increasing as the lever is moved further away from the neutral position. A releasable securing means may hold the levers 14 and 20 together in the neutral position.
Patent GB-1370269-A (GB)
Title: Mechanical brake for a transformer tap changer
IPC: H01H3/26
Filed: 1972-02-10
Abstract: 1370269 Disc brakes ALLMANNA SVENSKA ELEKTRISKA AB 10 Feb 1972 [11 Feb 1971] 6198/72 Heading F2E A brake for the driving device of a transformer tap changer comprises a brake disc 1 adapted to be driven by the driving motor of the tap changer, and brake shoes 12, 13 co-operating with a braking surface thereof, a rotatable control disc 3, driven simultaneously with the brake disc, having at least two parts of different radial distances from its axis of rotation and a surface follower 7 which abuts the periphery of the disc 3 and is journalled on a control arm 5. The position of the arm 5 is dependent upon that of the surface follower on the disc 3 and an operating rod 11 controlled by the arm is arranged to move the brake shoes towards or away from the disc 1. As shown, the disc 3 which preferably rotates more slowly than the disc 1 and may be driven by the latter through gearing, has a recess 4, or two or more depressed parts or raised collars, and the shoes 12, 13 normally contact the disc 1. When the follower 7 moves out of the recess, the rod 11 is moved to the left or the right as seen in Fig. 1, depending on the direction of rotation of the disc 3, and rollers 15, 16 journalled on the shoes 12, 13 are moved apart by engagement thereof with the wider parts 20 of the rod to disengage the shoes from the disc 1.
Patent GB-212920-A (GB)
Title: Improvements in cigar show cases
IPC: A47F1/04
Filed: 1924-03-11
Abstract: 212,920. Wijters, F. L. March 17, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Cabinets and show cases; drawers and draw fittings.-Cigars are displayed in a case with a hinged glazed front 4 normally fastened down by screws and are contained in a drawer 2 mounted on inclined runners 9 and provided with an inclined' front. The rear end of the drawer carries a hook 12 which is engaged by a pin 13 on a vertically movable rod which may lock several drawers simultaneously. The drawer front normally engages a rabbeted bead 10 from which it is disengaged for opening the drawer by lifting. A stop 6 prevents the drawer from being entirely withdrawn. A plate 11 may carry advertising matter.
Patent GB-718449-A (GB)
Title: Improvements in gas turbine engines
IPC: F01D25/18
Filed: 1952-03-12
Abstract: 718,449. Elastic-fluid turbines. GENERAL MOTORS CORPORATION. March 12, 1952 [March 20, 1951], No. 6374/52. Class 110(3) [Also in Group XXXIV] A gas turbine engine has a hollow shaft supported by one or more bearings and within the shaft are two co-axial tubes located one within the other and spaced from the inner surface of the hollow shaft and adapted for the flow of bearing lubrication fluid through the inner tube and in the annular space between the tubes. As shown, the shaft 12 of a gas turbine' is hollow and is supported at the forward end in a ball thrust bearing 13 and at the rear end in a roller bearing 14. A hollow tie-bolt 24 extends through the shaft 12, being secured thereto at one end by means of a nut 25 and towards the other end being positioned by a collar 26. Within the tie-bolt 24 is a tube 33 connected at one end to the tie-bolt by a sleeve 34 and at the other end being held in a plug 32 slidably mounted by means of O-ring seals 36 in circumferential grooves in the tie-bolt. Oil is pumped from a reservoir 29 through a pipe 31 to the tiebolt and passes through a passage 38 in the plug 32 to the annular space 40 around the tube 33. It reaches the bearing 13 by radial passages 52, 53, 54, 55 and returns to a sump 44 from which oil is pumped through a tube 51 to the reservoir 29. Oil for the bearing 14 flows from the space 40 through radial passages 63, 64, 65, 66 and is returned to a sump 72. The sump contains a rotary pump 75 driven from the turbine shaft 12 through gearing 77, 78 the gear 78 being integral with a hollow rotatable shaft 79 splined to the tie-bolt nut 25. The pump forces oil through a pipe 84 through the shaft 79 and the tube 33 and through a passage 41 in the plug 32 to radial passages, 43 in the tie-bolt 24 leading to splines between the turbine shaft 12 and a coupling shaft 21. The oil escapes past the splines to the sump 44. Means are provided for supplying cooling air to the machine. The housing 72 for the pump 75 is enclosed by a sheet metal casing 90 into which cooling air is supplied by way of a pipe 91 and ports 94, the air being discharged through the rear portion of the casing. Air also flows through ports 96 in an annulus 93 and between a bearing support ring 70 and a shield 97 so that the bearing 14 is protected from heat radiated from the turbine wheels. The lubricating oil is kept cool by the provision of heat shields 98, 99 of bright metal which are provided between the turbine shaft 12 and the tie-bolt 24. Air in the space between the shield 99 and the tie-bolt 24 is vented through openings 101 and 111. The space between the shields is sealed. Air is circulated through the space between the shield 98 and the shaft 12 by means of a centrifugal fan 106 delivering air through an opening 108 in the fan and through passage 103, the air discharging through outlets 104, 105.
Patent GB-162863-A (GB)
Title: Improvements relating to perambulators
IPC: B62B9/12
Filed: 1920-03-02
Abstract: 162,863. Mtarmet Baby Carriage Syndicate, Ltd., and Hall, T. March 2, 1920. Bodies of perambulators are made of sheet metal of undulating section in vertical planes, the side and end walls being connected along a line corresponding in shape. Side walls b, Fig. 2, and end walls similarly shaped extend outwardly with concave curvature towards the top c and convex curvature at the bottom d. The upper edges e are turned over for attaching upholstery, and the side and end walls are connected by a binding strip g, Fig. 5, engaged over turned-back edges f. The base plate h, Fig. 4, is connected to the walls by depending flanges i, Fig. 1, engaging recesses formed in the edges of the base plate, which are then pressed down. The end walls may have a straight section.
Patent GB-470621-A (GB)
Title: Device to facilitate the arrangement of flowers in vases or the like
IPC: A47G7/07
Filed: 1937-03-04
Abstract: 470,621. Flower holders. TAYLOR, W. A. March 4, 1937, No. 6428. [Class 128] A flower holder comprises a grid or grating 1 mounted on the upper end of a stem, the edges of the grating touching the sides of the vase and the base of the stem, which may have a laterally - extending foot, touching the bottom of the vase. The stem may comprise a slotted, exteriorly screw - threaded, hollow tube 2 and an interiorly screw - threaded binding ring 5 by which a rod 3; fitting into the tube, is held in any desired position.
Patent GB-366311-A (GB)
Title: Improvements appertaining to t-squares
IPC: B43L7/02
Filed: 1931-03-02
Abstract: 366,311. T-squares. MILLER, W.,39, 6th Street, New Township, Springs, Transvaal, South Africa. March 2, 1931, No. 6447. Drawings to Specification. [Class 97 (iii).] A T-square blade is provided with a longitudinal groove having parallel sides and a slide piece on which is pivotally mounted an auxiliary blade is formed with a correspondingly shaped projection capable of being inserted into or removed from the groove from the front. The auxiliary blade, which may be provided with projections engaging recesses in the slide when the auxiliary blade is at 90‹ to the T- square blade, is attached to the upper surface of the T-square blade and bent so that both blades lie flat on the drawing surface, abutments engaging the T-square blade when the blades are at 45‹ being formed.
Patent GB-288253-A (GB)
Title: Process for the production of anhydrous zinc chloride
IPC: C01G9/04
Filed: 1928-03-01
Abstract: 288,253. Metallbank und Metallurgische Ges. Akt.-Ges. April 9, 1927, [Convention date]. Anhydrous zinc chloride is obtained by subjecting zinc oxide at elevated temperatures, say 400-500‹ C., to the action of chlorine in the presence of a substantial excess of a mixture of hydrogen and carbon monoxide such as water gas. Preheated zinc oxide may be treated with a mixture of 1 volume of chlorine and two of water gas under such conditions that a temperature of 400-500‹ C. is maintained by the heat of reaction, the fused zinc chloride formed being tapped off and filtered before solidification. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter : the use for the chlorination of a mixture of chlorine and hydrogen only, or of chlorine and a gas mixture such as power gas, effecting chlorination at 700‹ C. or at higher temperatures whereby the zinc chloride formed in volatilized and condensed; or subjecting zinc oxide in a finely divided form, for instance atomized zinc oxide, to the action of the gas mixture. This subject-matter does not appear in the Specification as accepted.
Patent GB-416039-A (GB)
Title: Improvements in toy picture puzzles
IPC: A63F9/12
Filed: 1933-03-04
Abstract: 416,039. Picture block puzzles. BROWN, T., 10, Granville Gardens, Ealing Common, London. March 4, 1933, No. 6587. [Class 132 (iii).] A block for a picture puzzle of the kind comprising a number of rectangular blocks with parts of pictures on the sides thereof has a part cut out therefrom representing an animal, figure, letter &c. which is replaceable in the block. Strips of plywood a, b have paper designs of animals, letters, figures &c. h<1>, i<1>, stuck to them, which are then fret-sawn through. The strips a, b with the cut-out designs removed are then glued to the sides of a core c to form a rectangular block. A paper picture is cut into strips which are pasted on to one or more sides of the block not having the cut-out designs and the rectangular block is then cut up between the designs into smaller blocks. The blocks are all of equal size and the sides from which the designs have been cut are squares and larger in area than the remaining sides. As shown in Fig. 2, a cut-out design j may be common to two of the smaller blocks, the cutting-up into smaller blocks along the line k taking place after the design j<1> has been removed. One of the strips a, b may be omitted or others may be added ; the core c may be omitted, or only one or more than two of the sides of the block may be utilized for the picture strips. According to the Provisional Specification, a cut-out piece extends through the entire thickness of a block and on removal is divided into two equal parts, or two or more strips of plywood are fastened together permanently near their edges and are sawn through to provide the cut-out designs, and the names of the animals may be printed on the blocks.
Patent GB-540383-A (GB)
Title: Improvements in or relating to moulding compositions
IPC: A61K6/083
Filed: 1940-04-12
Abstract: 540,383. Polyvinyl resin compositions. BAKELITE, Ltd. April 12, 1940, No. 6700. Convention date, Aug. 8, 1939. [Class 2 (iii)] A moulding composition, suitable for the making of dentures, comprises a co-polymer having a molecular weight of at least 15,000 derived from a vinyl halide and a vinyl ester of a lower aliphatic acid containing not more than six carbon atoms in the molecule, and between 30 and 50 per cent. of a monomer ef an ester of acrylic acid or of a lower alkyl, alkylene, aryl or aralkyl substituted acrylic acid, the proportion of monomer being calculated on the combined weight of the polymer and monomer. The co-polymer contains between 75 and about 90 per cent. of vinyl halide, and may be derived from a mixture of 90 per cent. vinyl chloride and 10 per cent. vinyl acetate. The composition may include a stabilizer, e.g. calcium stearate, dibutyl tin oxide or hydroquinone, dyes or pigments, e.g. cadmium yellow, rhodamine, or titanium compounds, and a polymerization catalyst, e.g. benzoyl peroxide. The composition may be prepared by grinding the copolymer with pigment or dye and stabilizer and adding the liquid monomer to the mixture, e.g. by spraying ; the mixture may be allowed to stand, and the mass then pressed in a warm steel mould to form a sheet or plate ; alternatively, the co-polymer may be dissolved in monomer and the excess monomer distilled off until a viscous mass is obtained, the mass being then poured into pans and the evaporation of the monomer continued until a sheet is formed. In making dentures, the composition is packed into a plaster investment preferably heated to about 80‹C., and the flask closed ; the flask is then placed in a dental vulcanizer, e.g. for about 60 minutes, the temperature being maintained at about 100‹ to 130‹C., and the pressure ranging up to 25 lb. per square inch, during which process the monomer is polymerized. In examples, the composition comprises a copolymer of vinylchloride and vinyl acetate and monomeric ethyl methacryate, isopropyl methacrylate, or methylmethacrylate with or without allylmethacrylate, isopropyl methacrylate, ethyl methacrylate or benzyl methacrylate. Specifications 426,744 and 484,343 are referred to.
Patent GB-1441523-A (GB)
Title: Apparatus and method for removing water from the surface of an article
IPC: F26B19/00
Filed: 1974-02-14
Abstract: 1441523 Drying articles RHONE-PROGIL 14 Feb 1974 [15 Feb 1973] 6716/74 Heading F4G An apparatus for removing the water from the surface of an article by immersion in a liquid composition which is non-miscible with water, comprises a water settling tank arranged adjacent one end of a water removal tank 1 which is side-by-side with a rinsing tank 2 with which it is connected for flow of liquid composition from the rinsing tank 2 to the water removal tank 1. An overflow device extends around at least 40% of the periphery of the water removal tank, the overflow device being connected to the water settling tank for flow of water and liquid composition from the water removal tank to the water settling tank. The water settling tank is further connected to the water removal tank for flow of liquid composition back to the water removal tank 1 from the water settling tank. As shown in Fig. 2 the overflow device includes a channel 7. The tank 1 is fitted with heaters 8 and ultra sonic emitter devices 9 (Fig. 4) for heating and agitating the liquid composition. As shown in Fig. 4 the overflow device may comprise a plurality of orifices 2. Other shapes of water removal tanks are disclosed with different positions of the heaters and ultra sonic emitter devices (Figs. 7 to 15, not shown).
Patent GB-356665-A (GB)
IPC: C08B3/18
Filed: 1930-03-04
Abstract: Carboxylates.-Mixed carbohydrate esters are formed by treating the carbohydrate or a conversion product thereof with a quantity of fatty acid anhydride calculated for the formation of triacidylate in combination with a quantity of a fatty acid different from that corresponding with the anhydride, with or without a catalyst.  The products may be hydrolyzed in known manner.  The reaction may be carried out in the presence of acetic acid, propionic acid, benzene or the like as a diluent.  In examples, (1) a cellulose acetobutyrate is produced by introducing 100 parts of cellulose into a mixture of 100 parts acetic anhydride, 100 parts butyric acid, 600 parts liquid sulphur dioxide and 12 parts of sulphuric acid at a temperature of 18-23 DEG  C., followed by addition of 85-90 parts acetic anhydride and completion of the esterification at 23-24 DEG  C.; hydrolysis is effected by a mixture of 100 parts 30 per cent butyric acid and 3 parts sulphuric acid: (2) a cellulose butyropropionate is obtained by treating 100 parts cellulose at 40 DEG  C. with 245-250 parts of propionic anhydride, 400 parts of butyric acid and 100 parts of zinc chloride: (3) a starch acetobutyrate is obtained by treating 100 parts of starch with 185 parts of acetic anhydride, 150 parts of butyric acid, 400-600 parts of benzene and 3 parts of sulphuric acid in a rotating drum at 40-60 DEG  C.; the product is isolated by centrifuging and washed with water and dried; it is soluble in acetone.
Patent GB-525953-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F1/28
Filed: 1939-03-03
Abstract: 525,953. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., HODGSON, K. G., and ROCHE, A. H. March 3, 1939, No. 7084. Drawings to Specification. [Class 40 (v)] In a multi-stage amplifier in which negative feedback is applied from the output to the input to reduce intermodulation products, an additional feedback is applied to an intermediate stage to alter the ratio between the " Johnson noise " voltage due to thermal agitation and the. Valve noise " voltage and compensated by a change in the amplifier gain so that the additional feedback unaffects either the total gain or the amount of the intermodulation products in the output. Preferably the " Johnson noise " and " valve noise " voltages are made equal, and their sum, at the output is made equal to the. effects of the intermodulation products. The Specification gives a mathematical analysis of the noise effects present in the amplifier and the effect of the negative feedback.
Patent GB-665644-A (GB)
Title: Improvements in or relating to means for sensing and arranging postal packets and the like
IPC: B07C3/18
Filed: 1949-03-16
Abstract: A postal packet is provided with one or more spots of material capable of influencing the magnetic field of one or more magnets, so that an impulse is generated in an associated electric circuit which impulse is utilized to orientate the packet into a predetermined position.  The spots are incorporated in the postage stamps of packets of letters being fed to a franking machine and are preferably in the form of stripes of magnetized or magnetizable material arranged in mutually perpendicular planes. The letters are shaken by known means on to a conveyer so that they are supported on one of their four edges with the stamp facing front or rear.  The eight resulting positions possible are differentiated either by the different effects of the perpendicular stripes in the stamp or by having a plurality of electromagnetic sensing heads which compare the times of impulses owing to the stamp being near the front or rear edge of the letters.  The sensing heads may be in pairs on opposite sides of the path of the letters so that each pair of impulses can be compared to determine whether the stamp is facing front or rear. The resulting impulse or impulses are caused to actuate mechanism for causing the appropriate orientation of the letter.
Patent GB-416088-A (GB)
Title: Improvements relating to dynamos for train lighting installations
IPC: H02K5/04
Filed: 1933-03-10
Abstract: 416,088. Dynamo - electric machine casings. STONE & CO., Ltd., J., Deptford, and CHILTON, A. H., 200, Brompton Road, Chelsea, both in London. March 10, 1933, No. 7314. [Class 35.] A cover seating for the inspection or like opening in a cylindrical steel dynamoelectric machine casing is formed by a wire or moulding welded around the edge of the opening. In the form shown, wire 5 is seam welded around the edges of the openings 3 in the casing 1 which is formed by bending a steel plate and welding the ends together. Lugs 12 are also welded to the edges of openings 3 to be engaged by a bar 8 which may be rotated by the handle 9 and clamped by the nut 11 to secure the cover 4.