baber/WOPTO huggingface dataset:
Patent GB-771308-A (GB)
Title: New and improved cyclopentanopolyhydrophenanthrene derivatives and methods for their production
Inventor: HEWETT COLIN LESLIE
IPC: C07J75/00
Filed: 1952-10-06
Abstract: The invention comprises cyclopentanopolyhydrophenanthrene compounds having an ester group derived from b -phenylpropionic acid and a hydroxy group in any of the 3-, 17- and 21-positions (other than testosterone b -phenylpropionate), and the preparation thereof by reacting a cyclopentanopolyhydrophenanthrene compound having hydroxy substituents in any of the 3-, 17- and 21-positions (other than testosterone) and b -phenylpropionic acid or a functional derivative thereof such as b -phenylpropionic anhydride or b -phenylpropionyl halide.  The reaction may be carried out in the presence of a solvent, e.g. pyridine or benzene.  It is advantageous to heat the reaction mixture to a temperature of the order of 100 DEG  C. when the anhydride reactant is used.  An organic base capable of combining with the hydrogen halide formed may be used with the propionyl halide.  In the examples the following compounds are prepared by the methods referred to above: deoxycorticosterone - 21b  - phenylpropionate, oestradiol - 3b  - phenylpropionate, oestradiol-3 : 17 - di - b  - phenylpropionate, 17a  - methyl-D 5 - androstene - 3b : 17b  - diol - 3b  - phenylpropionate, 17a  - methyl - D 5 - androstene-3b  : 17b  - diol - 3 : 17 - di - b  - phenylpropionate, 17a  - methyl - D 5 - androstene - 3b  : 17b  - diol-3 - acetate - 17b  - phenylpropionate, 17 - ethinyloestradiol - 3b  - phenylpropionate, 17 - hydroxy - 11 - desoxycorticocosterone - 21 - b -phenylpropionate, oestrone - 3 - b  - phenylpropionate, 1 - dehydro - 17 - hydroxy - corticosterone - 21 - b  - phenylpropionate and 11b : 17a  : 21 - trihydroxy - 3 : 20 - diketo - D 4-pregnene - 21 - b  - phenylpropionate.  In addition D 5 - pregnene - 3 : 21 - diol - 20 - one - 21-b -phenylpropionate is prepared by reacting b -phenylpropionic acid and 21-diazo-D 5-pregnenolone, oestradiol - 17b - phenylpropionate is prepared by partially hydrolysing oestradiol-3 : 17-di-b -phenylpropionate with potassium carbonate in methanol, and 17a -methyl-D 5-androstene - 3b  : 17b  - diol - 17 - b  - phenylpropionate is prepared by partially hydrolysing the corresponding 3 : 17-di-b -phenylpropionate with potassium carbonate in methanol.  The preparation of the following reactant is referred to: 17a -Methyl-D 5-androstene-3b  : 17-diol-3-acetate is prepared by reacting the corresponding 3b  : 17-diol and acetic anhydride in the presence of pyridine.
Patent GB-205487-A (GB)
Title: Improvements relating to the mixing of materials with rubber latex
IPC: C08J3/215
Filed: 1923-10-08
Abstract: 205,487. Hopkinson, E. Oct. 16, 1922, [Convention date]. India-rubber compositions.-Vulcanizing, compounding, and filling materials are converted into a stabilized colloidal form and mixed with latex, and the mixture is then deprived of substantially all its water content. Protecting agents, such as glue saponin or glycerine are used in the preparation of the colloidal solution. Insoluble solids, such as gums, resins, phenol-aldehydes, stearic acid, paraffins, and waxes, are preferably dissolved in organic solvents and the solutions are emulsified with water. Vulcanizing materials such as oxybutylthiocarbonic acid disulphide and dibenzylamine may be employed in the same manner, and vulcanized articles may be obtained by dipping moulds alternately into mixtures of latex with these two substances. Oils are preferably emulsified directly with water. Fillers such as carbon black, clay, wood flour, wood pulp, ground asbestos fibre, cotton, ground cork, &c. should be ground in a colloid mill. The aqueous mixture containing the rubber and the other materials may be dried either by spraying in a heated atmosphere or in the usual drying chambers. In the former case the product is powdered or granular and can in some cases be moulded without milling. Specification 177,493 is referred to.
Patent GB-754618-A (GB)
Title: Improvements in or relating to thread pulling devices for sewing machines
IPC: D05B3/06
Filed: 1954-08-30
Abstract: 754,618. Sewing-machines. PFAFF AKT.- GES., G. M. Aug. 30, 1954 [Nov. 30, 1953], No. 25060/54. Class 112. In a controlled operating - cycle sewing- machine, a thread pulling-off device, which is adapted to be operated at the beginning and end of each cycle, exerts a clamping effect on the thread temporarily whilst it is being pulled, thereby determining the amount pulled from the last stitch and the amount pulled from the supply spool. The thread from the last stitch is thus pulled tight for severing and sufficient extra thread is provided for forming the first stitch of the next cycle. As shown, the needle thread T in a button sewing-machine passes from a tensioner 39 to a stationary guide 40 through pulling-off means comprising a rotary disc 22 which carries a pair of diametrically opposed slotted pins 34, 35 constituting thread guides, and a pair of centrally-located thread-clamping jaws 25, 26; the arrangement being such that, at the end of a cycle, movement of the actuating lever 2 of a motor control switch is transmitted by means of a link 3, lever 4, slidable rod 6 and arm 9 secured to the latter, to the disc 22, whereby the thread is deflected from its straight path between the members 39 and 40, whilst the jaws 25, 26 simultaneously close to clamp the thread therebetween. The pins 34, 35 are adjustably secured in respective slots 30, 31 formed radially in disc 22 at right angles to the jaws. Disc 22 and a lower disc 16 are rotatably mounted on a fixed sleeve 14, the discs being interconnected by a torsion spring 21 attached at one end by a screw 20 to disc 16 and attached at its other end to a pin depending from disc 22, said pin lying between spaced abutments on disc 16. The latter is also formed with a radial slot 17 which slidably receives a block 12 pivotally connected by a pin 11 to arm 9. The jaws are secured by a screw 27 to disc 22, the lower jaw 26 being displaceably mounted on a bush 28. A push-rod 29 is slidably mounted in sleeve 14 and is biased downwardly by a spring 41. When the motor control switch is opened at the end of a cycle, block 12 slides in slot 17 to turn the discs, and a nose 43 on a rotating shaft 42 is arranged to lift rod 29 simultaneously to raise jaw 26 into contact with jaw 25.
Patent GB-1074040-A (GB)
Title: Method of icing and preserving fruit or the like
IPC: A23L29/256
Filed: 1966-06-06
Abstract: Iced chestnuts and candied fruit such as cherries and plums are preserved, after impregnation with sugar, by dip coating with an aqueous solution containing sucrose, glucose and either sodium alginate or a carraghenate, and the coating is then set by immersion in, or spraying with, a calcium chloride solution.  The coated fruit may be stored in syrup without losing its icing.
Patent GB-156903-A (GB)
Title: Improvements in sectional fences, gates and the like
IPC: E04H17/14
Filed: 1919-10-14
Abstract: 156,903. Angus, J. Oct. 14, 1919. Rail and vertical bar fencing; gates and gateposts.-Sectional fencing which may be adapted to serve as a gate comprises pairs of wooden horizontals 2 between which the wooden uprights 1 are situated diagonally and secured in position by nails 3. The sections are secured in position by being nailed to fillets 5 fastened to the wooden posts 4. When employed as a gate, vertical bars 6 are placed between the horizontals and diagonal bars 7 are provided.
Patent GB-488599-A (GB)
Title: Improvements in or relating to reciprocating pumps for spraying apparatus
IPC: F04B9/14
Filed: 1937-02-05
Abstract: 488,599. Reciprocating pumps. ARMSTRONG, J. J. V. (Bosch Akt.-Ges., R.) Feb. 5, 1937, No. 25350. Divided out of 488,587. [Class 102 (i)] A pump for a spraying-apparatus includes a plunger 522 which is actuated on its delivery stroke by an auxiliary liquid controlled by another piston not shown. The auxiliary liquid passes through a port 20a in a plate 20 against which the plunger is pressed by a spring 523 engaging a flange 522a. The spring is thus immersed in the auxiliary liquid.
Patent GB-441991-A (GB)
Title: Improvements in vaporisation of solid media by means of vacuum cleaners
IPC: A01M13/00
Filed: 1935-09-13
Abstract: 441,991. Vacuum-cleaner attachments. ELECTROLUX, Ltd., Luton, Bedfordshire.- (Assignees of Aktiebolaget Elektrolux; 2, Norrmalmstorg, Stockholm) Sept. 13, 1935, No. 25464. Convention date, Sept. 15, 1934. [Class 8 (i)] [See also Group VI] A container 15 is fitted in the main air stream of a vacuum cleaner so that the air passes vertically upwards through per forated discs 20, 21 to vaporize solid crystalline material, located between the discs, for insect killing, perfuming, or disinfecting The edge of the disc 21 may be imperforate or of smaller mesh than the central portion. The disc 21 may also be pressed downwardly to conical form to assist in throwing the solid particles outwardly.
Patent GB-354567-A (GB)
IPC: A01B33/14
Filed: 1930-08-26
Abstract: 354,567. Machines for working land. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Aug. 26, 1930, No. 25480. Convention date, Oct. 16, 1929. [Class 6 (i).] The tools of rotary hoes &c. are arranged to yield resiliently relatively to the shaft carrying them and are connected with the shaft by friction clutches, so that normally the tools alone yield resiliently when obstacles are encountered, the friction clutches operating only when the yielding movements of the tools are insufficient to surmount the obstacles. Each tool 5 may be connected by a spring 4 to a flanged sleeve 2 movably mounted on the shaft 1. Friction discs 20 of leather &c. may be provided on or between the flanged sleeves 2 and between the sleeves and flanges 26 on the shaft 1, near the gear casing 25. The sleeves are pressed together by end springs 22 adjusted by means of screws 23. A separate friction clutch may be provided for each tool. Reference has been directed by the Comptroller to Specification 492/07, [Class 6, Agricultural appliances for the treatment of land &c.].
Patent GB-1150143-A (GB)
Title: Improvements in or relating to Grippers for Handling Objects
IPC: A47J43/07
Filed: 1966-06-08
Abstract: 1,150,143. Gripping tools; hand tool handles. MOULINEX S.A. 8 June, 1966 [14 June, 1965], No. 25491/66. Headings B4K and B4W. A gripper for handling an object comprises a fork 12 having two resilient limbs 14 with jaws and an unlocking or releasing thrust element 20 adapted to slide between a locked position, in which it leaves the jaws freely in engagement with the object, and an unlocked position in which it acts on the inner faces of the limbs 14 to increase the distance between the limbs to disengage the jaws from the object. Each jaw is formed by a blade 16 with a hole 22 or recess therein for engagement with a projection provided on the object. The thrust member 20 comprises a central part 30 between the limbs 14 of the fork, two lateral parts 32 outside the limbs and forming actuating knobs and a pair of resilient blades 34 the tapered ends of which are adapted to engage between the jaws 16 and the sides of the projection on the object gripped to constitute wedges for spreading the jaws apart. It is stated that the handle 40 of the gripper may be used as a spatula or scraper.
Patent GB-1209384-A (GB)
Title: Method of producing polybutadiene
IPC: C08F36/06
Filed: 1968-05-28
Abstract: 1,209,384. Butadiene polymerisation and catalyst therefor. GOODYEAR TIRE & RUBBER CO. 28 May, 1968 [10 July, 1967], No. 25507/68. Heading C3P. Butadiene is homo- or copolymerized to a polymer with a high cis-1,4-content using a catalyst comprising (a) an organometallic compound of Groups I to III; (b) an organic complex, carboxylic salt or carbonyl of nickel or cobalt; and (c) a boron trifluoride complex with water or a mineral acid. In the example, butadiene is homopolymerized using a catalyst containing the following components: (a) tripropylaluminium; (b) nickel octanoate; and (c) BF 3 .H 3 PO 4 , .2H 2 O and .H 2 O, while a comparative example employs BF 3 .2CH 3 .COOH, .CH 3 COOH, butyric acid, .2 propylene glycol, and .2-ethoxyethanol as the component (c).
Patent GB-462470-A (GB)
Title: Improvements in and relating to electric discharge lamps
IPC: H01J61/34
Filed: 1935-09-14
Abstract: 462,470. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 14, 1935, No. 25559. Convention date, Sept. 15, 1934. [Class 39 (i)] A glow-discharge lamp comprises indirectlyheated electrodes arranged in an envelope which is heated uniformly by a surrounding ballast resistance connected in series with the electrode heaters and housed in a second envelope. A lamp 10, Fig. 1, is provided with hollow nickel electrodes 22, coated internally with barium oxide, the heaters of which are connected in series by a molybdenum wire 24. A surrounding evacuated envelope 12 comprises a glass base 14 having nipples to which tubular terminals 16 are fused. The supporting conductors 17, 18 are secured to the terminals. The lamp 10 is supported on the conductor 17 and is registered at the other end by a leading-in wire 21 which engages in a nipple 28 in the outer envelope. A coiled tungsten filament 11 is supported by wires fused into glass beads which are supported through anchor wires by wires 26 secured to the leading-in wires through glass buttons 27. One end of the filament is connected to the conductor 18 and the other end is secured to one of the wires 26 which is connected to the leading-in wire 21. In a modification, a zigzag filament is supported by bent hooks fused into the glass buttons 27. In a further form, a coiled filament is supported by anchor wires fused into a glass tube 33, Fig. 3, which is spaced from the envelope 12 by springs 38 and from the envelope 10 by springs 37. The filling may consist of one or more of the metals sodium, cadmium, and mercury, together with a rare gas. The lamp may operate at a temperature of 250 C. and may be housed in a light-diffusing globe or the envelope 12 may be frosted. An incandescent filament may be used. U.S.A. Specification 1,956,591) is referred to.
Patent GB-1180339-A (GB)
Title: Improvements in or relating to methods and apparatus for the Continuous Casting of Metals
IPC: B22D11/06
Filed: 1968-05-28
Abstract: 1,180,339. Continuous casting-machines. PHELPS DODGE COPPER PRODUCTS CORP. 28 May, 1968 [21 June, 1967], No. 25563/68. Heading B3F. A continuous casting-machine has a circular horizontal rotating trough mould 29 provided with a cooling station where the upper surface of the cast metal is solidified. When casting metals, such as " tough pitch " copper, which produce gas bubbles on cooling that compensate for the shrinkage in volume of the metal a stream of a non-oxidizing gas is directed on to the surface of the metal within the mould trough 29a at a point where the metal is molten but that is far enough away from the pouring spout 40 to have quiesced to form a flat surface. The product bar is formed with a flat surface (opposed to the usual concave surface) and is suitable for rolling. Molten metal from a pouring cup 36 (Fig. 2) is supplied to the trough 29a through a spout 40. The mould 29 has a hood 50 with a glass inspection port 60 and a gas exit 61. In Fig. 3 (a continuation of Fig. 2), Ar or N 2  is blown on to the metal surface by four nozzles 54 all pointing towards the spout 40. A valve 57 controls the gas flow to the nozzles. The gas stream in the hood flows in the opposite direction to the mould rotation.
Patent GB-972132-A (GB)
Title: Means for controlling the speed of a synchronous electric motor
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: H02H7/093
Filed: 1961-07-14
Abstract: 972,132. Control of A.C. motors. RANKBUSH MURPHY Ltd. July 16, 1962 [July 14, 1961], No. 25580/61. Heading H2J. A variable-frequency supply for varying the speed of a three-phase synchronous motor 1 comprises the difference frequency derived from modulators 9, 10, 11, fed by a fixed oscillator 6 and a variable oscillator 3 controllable by a D.C. signal at 2. Phase shifters 7, 8 introduce Œ 120 degrees phase shift in the supply to modulators 10, 11. The modulators are preferably ring-type. If the frequency range of the variable oscillator 3 includes the fixed frequency 6, the motor may be reversed.
Patent GB-380249-A (GB)
Title: An improved monthly calendar
IPC: G09D3/04
Filed: 1931-09-12
Abstract: 380,249. Calendars. BEMROSE & SONS, Ltd., Midland Place, and CAWTHORNE, S., 16, Chestnut Avenue, both in Derby. Sept. 12, 1931, No. 25630. [Class 106 (iv).] A monthly calendar comprises a mount, guides on the mount, and a loose-leaf calendar sheet slidably mounted between the guides in such a manner as to expose the current month only. In the form shown in Figs. 1 and 3, a mount 10 is formed with slits 11 through which the calendar sheet 12 is passed in front of the mount between the slits. The sheet is composed of any suitable material and is creased or scored longitudinally to permit of it being folded into two or more leaves. If desired, the corners of the slits may be reinforced by strips of fabric or other material. In a modified form the mount is provided with an aperture and with channel guides at the rear to receive the folded sheet 12.
Patent GB-772991-A (GB)
Title: Improvements in and relating to forced recirculation steam generators
Inventor: REPPEL KARL HANS
IPC: F22B1/22
Filed: 1955-09-07
Abstract: 772,991. Forced-flow steam boilers. LA MONT INTERNATIONAL ASSOCIATION, Ltd. Sept. 7, 1955, No. 25661/55. Class 123(2) A forced-circulation steam boiler heated by hot gases under pressure, for example, the exhaust gases from an internal combustion engine or the cooling gases from a nuclear reactor, comprises a pressuretight cylindrical casing 13 lined internally with a helically-wound tube coil 14 and having an upper inlet and a lower outlet for the gases. Within the casing are disposed four walls 10 of closely-pitched water-tubes, the walls defining a longitudinal, rectangular section chamber within which are arranged banks of sinuous tubes constituting respectively an economizer 7, an evaporating section 4 and a superheater 1. The small segments between the casing 13 and walls 10 are fitted with plates 23 which may be arranged as dampers wherehy a proportion of the gas may be bypassed, for example under low load conditions. A circulating pump 19 drawing water from a drum 17 delivers it through proportioning nozzles to the coil 14, the wall tubes and the vaporizing section, each element delivering steam-water mixture into the drum whence steam flows. to the superheater through a pipe 22. In a modification the inlet and outlet headers of the heating elements are disposed within the casing 13.
Patent GB-206311-A (GB)
Title: New optical appliances for personal wear in playing ball games
IPC: G02C5/00
Filed: 1922-09-22
Abstract: 206,311. Walker, J. D. G. Sept. 22, 1922. Golf, cricket, &c. practising appliances. - Sighting appliances for personal wear when playing golf, cricket, or other ball games, to enable the player to determine whether any undesired movement of the head takes place, consist of parallel elongated, vertical or horizontal members mounted in eye-frames or of opaque members secured before the eyes to move in unison with the head. In one form the vertical or horizontal sides of rectangular-shaped eye-frames 3 constitute sights to check turning movements of the head. In another form a pair of spectacle frames 5 open at the upper portions are fitted with plain glasses 6 upon the upper edges of which are clipped sights 7. These sights 7 may be adjusted horizontally across the field of view. In a modification, the sight is supported on an adjustable continuation of the side-wire of the spectacle frame, or may be fitted on a bar extending between two such continuations. The side-wires 16 are of flexible material to enable the frames to be adjusted at various distances from the eyes.
Patent GB-480373-A (GB)
Title: Improvements in cooking apparatus
IPC: F24B1/00
Filed: 1936-09-23
Abstract: 480,373. Covers for enclosing utensils on hot - plates. BELL, E. W. Sept. 23, 1936, No. 25785. [Class 126] Cooking pans on the hot-plate of a cooking- stove are enclosed by a rectangular metalwalled enclosure 1 open at the bottom and closed at the top by a hinged lid 5, one wall of the enclosure having a transparent window 8. The front wall 10 may be hinged at 11. The enclosure may be double-walled, the space between being filled with air, water, or lagging.
Patent GB-518927-A (GB)
Title: Improvements in or relating to vehicle brakes
IPC: F16D51/28
Filed: 1938-09-05
Abstract: 518,927. Shoe brakes. BENDIX, Ltd., and IRVING, J. S. Sept. 5, 1938, No. 25855.' [Class 103 (i)] To permit sliding as well as pivotal movement of a brake shoe relatively to a torque-taking stationary abutment, a part-circular trunnion is rotatably mounted in a corresponding recess in the shoe-end or in the abutment and has a substantially flat face adapted to slide on the abutment or on the shoe-end. Fig. 1 shows part of a brake as described in Specification 499,598, in which a shoe 10 has a pair of parallel webs 11 between which and pivoted thereto is bellcrank 12 abutting on a plunger 13 in a fixed housing 14 and on thrust member 15 extending to a similar bell-crank at the other end of the' shoe. An abutment to take the torque of the shoe comprises a pair of part-cylindrical members 16 mounted rotatably in corresponding recesses in the webs 11 and having each a flat face engaging a flat face 18 on the end of the housing 14. The shoe end is-thus free to slide radially on the face 18 and to rock about the trunnions 16 which have side flanges to prevent lateral displacement. In a modification for a shoe having a single web the single trunnion at each end has a V-shaped circumferential groove engaging a corresponding recess in the shoe-end. In a further modification, the shoe has a single web the end of which is slidable on the flat face of a part-cylindrical trunnion rotatably seated in a recess in the outer end of the housing. The plunger in this case engages a pair of bell-cranks disposed on either side of the web and is slotted to receive the web and the trunnion.
Patent GB-318084-A (GB)
Title: Improvements in washing machines
IPC: D06F13/02
Filed: 1928-10-10
Abstract: 318,084. Inventia Patent-Verwertungs-Ges. Feb. 15, 1928, [Convention dateDivided on 306,077, [Class 138 (ii), Washing, mangling, &c.]. Casings; driving-arrangements.-The casing 5 of the motor 4 is formed integrally with the housing 6 of the transmission gear 7 between the motor and the crank shaft 13 of the roller 14 of a washing-machine, and the motor-casing and gear-housing are supported between the upper and lower members 3, 2 of the hollow cover of the machine out of electrical contact therewith. The gear housing rests upon and is secured by screws 11 to electrically insulating plugs 10 inserted in holes in a plate 8 secured to the lower member of the cover, and the upper part 18 of the gear housing is provided with an insulating sleeve 19 which receives an insulating plug 17 screwed on to the gear housing and clamping it to the upper plate 2 of the cover. At the same time the plug 17 holds the cover plates 2, 3 together. A coupling 15 formed of electric insulating material is inserted in the transmission gear so that all parts of the machine normally touched by the operator are out of electrical contact with the motor. The contact pins of the motor are carried on a bracket secured to the motor casing and are housed within the hollow cover a portion of which is cut away to give access thereto. A fan 26 is carried on the motor shaft and draws in air for cooling the motor through an insulating tube 20.