baber/WOPTO huggingface dataset:
Patent GB-427448-A (GB)
Title: Improvements relating to the manufacture of esters from acetylene
Filed: 1934-03-14
Abstract: The reaction between acetylene and acetic acid with formation of ethylidene diacetate and vinyl acetate is promoted by the presence of a mercury salt of methionic acid or other organic disulphonic acid, other than aldehyde disulphonic acids, and free methionic or other organic disulphonic acid present in excess.  At temperatures of 60--100 DEG  C. ethylidene diacetate is the main product, while temperatures of 30--45 DEG  C. are employed for the preparation of vinyl acetate.  According to examples, acetylene is passed into acetic acid in presence of mercuric oxide and excess of methionic acid at 70--80 DEG  C. to give mainly ethylidene diacetate, at 35--40 DEG  C. to give mainly vinyl acetate, and in presence of mercuric oxide and excess of benzene disulphonic acid, naphthalene disulphonic acid, cresol disulphonic acid, or benzoic acid disulphonic acid, at 80--100 DEG  C. to give mainly ethylidene diacetate.  Resin formation is minimized.  British Specifications 14246/13, 112,765, 112,766, and 308,169, [all in Class 2 (iii)], and German Specifications 271,381 and 334,554 are referred to.
Patent GB-1273716-A (GB)
Title: Mechanical pencil
Inventor: HORIE YUKIO
IPC: B43K21/10
Filed: 1969-05-29
Abstract: 1,273,716. Mechanical pencil point protectors. DAI NIHON BUNGU K. K. 29 May, 1969 [29 May, 1968; 11 July, 1968], No. 8129/71. Divided out of 1,272,835. Heading B6P. The barrel 3 of a propelling pencil is provided with a guard sleeve 13 which can be projected and retracted to conceal the writing tip of the pencil, which tip has a lead guide tube for protecting a thin lead. When a cylindrical cover sleeve 15 is rotated, a helical slot 8 (Fig. 2) of an outer cylindrical cam member 7 is also rotated so that a knob 14 extending from the guard sleeve 13 is thereby advanced along the straight slot 10 of an inner cylindrical cam member 9 (Fig. 3).
Patent GB-817785-A (GB)
Title: Improvements in bushings for electrical conductors
IPC: H01B17/28
Filed: 1957-03-12
Abstract: 817,785. Bushing insulators I-T-E CIRCUIT BREAKER CO. March 12, 1957 [April 26, 1956], No. 8153/57. Class 36. A cast resin bushing insulator 1 surrounding a conductor 2 has a metallic support 3 and earthed shield 4 embedded therein. The support 3 may be of non-magnetic material and may be formed with flanges which constitute the shield 4, the free ends of which may be further from the conductor than is the central portion. The bushing 1 may consist of an epoxy resin, which may contain a mineral filler and may have a corrugated surface 5. Reference has been directed by the Comptroller to Specifccation, 793,974.
Patent GB-844587-A (GB)
Title: Improvements in the production of boron
Inventor: STERN DAVID RUSSELL
IPC: C01B35/02
Filed: 1959-03-10
Abstract: 844,587. Producing boron electrolytically. AMERICAN POTASH & CHEMICAL CORPORATION. March 10, 1959, No. 8255/59. Class 41. Elemental boron is produced electrolytically using boron carbide as consumable anode, and as electrolyte a molten mixture of an alkali metal or alkaline earth metal chloride, and an alkali metal fluoborate not exceeding 50% of the mixture. A voltage of 3V or below is used at which the electrolyte is not decomposed. The boron is deposited on the cathode as a spongy crystalline aggregate. A suitable apparatus consists of a graphite crucible 6 inserted in a metal container 7. A granular boron carbide layer 11 is maintained in position by a perforated graphite cylinder 12. A steel cathode 14 is suspended in a molten electrolyte kept at 750‹-850‹ C. and consisting of a mixture of sodium, potassium, lithium or calcium chloride, (a mixture of potassium and sodium or lithium chloride being preferred) and alkali metal fluoborate. Argon or other inert gas is present. The cathode coated with boron and some electrolyte is withdrawn, preferably cooled in the inert atmosphere; and then broken off the cathode, washed with water, HCI, and dried.
Patent GB-1164988-A (GB)
Title: A Compression Mould Assembly for Producing Glass Articles of Uneven Thickness.
Inventor: KUROKAWA TAKAAKI
IPC: C03B11/06
Filed: 1968-02-20
Abstract: 1,164,988. Making moulds. TOKY SHIBAURA ELECTRIC CO. Ltd. 20 Feb., 1968, No. 8282/68. Heading B3A. [Also in Division C1] A compression mould assembly for producing a glass article having a zone of reduced thickness as compared with the rest of the article comprises a plunger 1 and complementary mould 2 having opposed moulding surfaces adapted to compress therebetween a glass mass to the desired form, the moulding surfaces of each mould being formed of (i) carbon steel containing less than 0À3% by wt. carbon, (ii) ferritic stainless steel or ferritic heat-resistant steel containing less than 0À4% by wt. carbon, or (iii) austenitic stainless steel or austenitic heatresistant steel, except for the portion of the moulding surface of at least one of the moulds, which provides the zone of reduced thickness in the article, said portion being formed of a selffluxing nickel-chromium-boron base alloy having a Rockwell hardness of less than 45. The surface of the plunger 1 is formed by fusing the Ni-Cr-B alloy to the body of the plunger, which is of heat resisting steel, and parts are removed by cutting to form the bottom portion of the mould surface 16. A ring 10 is slidably mounted around the upper part of plunger 1 and has a boss-like portion 12 which seats on a recessed ledge 12 in the upper edge of mould 2. The moulds are preferably made of heat resisting steel containing 13% by wt. of chromium. That area of the plunger designed to form the area of reduced thickness may have a composition in per cent by wt., of Ni 90, Cr 5, B 1, Fe+Si+ C 4 and a Rockwell hardness of 20, or Ni 80, Cr 11, B 3, Fe + Si + C 6 and a Rockwell hardness of 40. The preferred range is Ni 75-90, Cr 4-18, B 0À75-4À5 and Fe+Si+C less than 10. The mould assembly is preferably used for cathode-ray tube cone portions.
Patent GB-542466-A (GB)
Title: Improvements in rotary bearings
IPC: F16C27/04
Filed: 1940-05-08
Abstract: 542,466. Gyroscopic apparatus. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and MEREDITH, F. W. May 8, 1940, No. 8318. [Class 97 (iii)] [Also in Group XXXIV] A self-aligning bearing, particularly for gyroscope gimbals; has a spherical outer race held by spring pressure against a support. The inner race is carried by the journal 10 which is provided with resilient buffers 23, 24. The outer race 12 is extended at 16 to engage a sleeve 15 formed on a flange 18 on the mount 19. An end member 20 is threaded into part 19 and has a central spigot 21 receiving a spring 22. A resilient ring 26 may be provided between extension 16 and flange 18. When the rotor is spun by air jets, the fluid may be conducted through the bearing in passages 27, 30 and a ball-ended pipe 32 mounted at one end in a journal recess 28 and at the other end in a recess 29 in the spigot 21, formed by a separate inset in member 20.
Patent GB-131363-A (GB)
IPC: G09B9/12
Filed: 1918-05-17
Abstract: 131,363. Ruggles, W. G. May 17, 1918. Developing sensory functions.-Apparatus for developing the function of the aural semicircular canals in indicating direction of movement or position, especially applicable for use in training aviators, comprises a seat carried by gimbal rings so as to be capable of complete rotation about axes at right-angles either by the occupant or by an instructor. The hand and foot controls for effecting the movements of the seat are similar to those used on an aeroplane, so that the aviator may be trained into the use of the appropriate controls for righting his position when disturbed by the instructor. The aviator may further be accustomed to a rarefied atmosphere by enclosing the seat in a casing fitted with means for reducing the air pressure. Fig. 1 shows the seat 30 carried by a frame 29 pivoted at 32, 33 in a ring 26, which is pivoted at 27, 28 to another ring 23 pivoted in turn at 24, 25 to a frame 16, which is capable of vertical movement on guides 13, 14. This vertical movement of the frame 16 is obtained by means of cables 17 connected to a hoisting-gear 20 driven by a motor 21, and the movements of the various rings about their pivots are effected by motors and worm gear 34, 35, 36. The motors are controlled by switches actuated by control levers 45, 46 at the seat 30 and similar controls at the instructor's chair 44.
Patent GB-268770-A (GB)
Title: Improvements in fining iron
IPC: C21C7/04
Filed: 1927-03-26
Abstract: 268,770. I. G. Farbenindnstrie Akt.- Ges. April 1, 1926, [Convention date]. Purifying and refining.-In a process for refining iron, iron oxide, prepared from iron carbonyl is used as the refining medium. In an example iron oxide obtained by decomposition of the carbonyl, for example according to the process described in Specification 258,313, is added in the required amount of about 2-3 per cent by -weight of the charge to molten cast scrap steel having a carbon content of 0.5 per cent. After a few minutes the melt contains only 0.015 per cent of carbon.
Patent GB-292699-A (GB)
Title: Improvements in or relating to weighing devices for use in connection with cigarette making machinery
IPC: G01G19/00
Filed: 1927-03-26
Abstract: 292,699. Molins, W. E. March 26, 1927. Addition to 260,744. Weighing-apparatus fitted to cigarette - making machines; automatic-feed weighers. - An improvement in a modification of the apparatus claimed in the parent Specification, for checking the consistency of cigarettes produced by a. cigarette - making machine comprises a hopper arranged to accommodate cigarettes, a counting mechanism operable automatically to receive periodically a predetermined number of cigarettes from the hopper, and weighing mechanism arranged to receive the counted cigarettes from the counting mechanism and automatically indicate the weight of the same. A quantity of cigarettes is placed in the hopper 1, or all the cigarettes produced by the cigarette-making machine are fed automatically into the hopper, and if sufficient cigarettes are present their weight depresses a spring-controlled flap 30 at the base of the hopper thereby removing an obstructing lever 26 from above a spring-raised clutch lever 18. The clutch lever rises and sets a fluted cigarette-counting drum 2 in rotation, each flute transferring a cigarette from the hopper to an inclined shoot 3. After being temporarily retained by a retainer 32 the batch of cigarettes falls into the pan 4 of the weighing machine and the indicating pointer 5 moves over its scale 6. A permanent record may also be made by a needle operated by the weighing mechanism. A cam 7 on the drum spindle actuates a forked lever 10 so as to press two springs 11 into contact with opposite sides of the pan 4 and hold the same whilst the further movement of the lever 10 opens a discharge gate 12 and permits the weighed cigarettes to fall onto a conveyer band 13. After the weighing operation is completed a roller on the side of the fluted drum passes over a cam surface 19 on the clutch lever and depresses the lever which thereupon arrests the fluted drum and also pulls down a link 24 thus rocking a shaft 23. The movement of the shaft 23, as described in the parent Specification, sets the recording mechanism in operation and also, for a predetermined interval of time, prevents the clutch lever 18 from rising and starting another counting and weighing operation before the recording mechanism has completed its cycle of movements after which the clutch lever again rises under spring action and another counting, weighing and recording operation takes places, the cycle of operations being repeated automatically until a shortage of cigarettes in the hopper 1 causes the obstructing lever 26 to arrest the mechanism.
Patent GB-1003001-A (GB)
Title: Relief valve
IPC: F16K17/04
Filed: 1963-03-01
Abstract: 1,003,001. Valves. BENDIX CORPORATION. March 1, 1963 [March 23, 1961], No. 8414/63. Heading F2V. A relief valve comprises a generally tubular casing 10 having an outlet passage 16 and an inlet passage 11 formed in a bushing 12 having a valve seat 12b engageable by a poppet 14 with an apertured skirt 14f slidably guided on a cylindrical portion 12a of the bushing and a head portion 14c slidably guided by an inner cylindrical surface 18a in a spring retainer 18 held against an adjustable abutment 19 by a spring 21, the valve seat and poppet having annular contact surfaces which are so shaped and positioned with respect to each other that opening movement of the poppet produces a flow channel therebetween having a component opposite to the direction of opening movement whereby fluid flow through the channel tends to open the poppet further. The spring 21 consists of a plurality of perforate discs 21a separated by rings 21b and 21c. A chamber 23 inside the head portion 14c communicates with the inlet 11 through a filter 14g to reduce the spring force required to close the valve and to act as an hydraulic damper. Fig. 2 shows alternative shapes of poppet and seat in which a protuberance 33 facilitates flow reversal. The poppet of Fig. 2 may be used with the seat of Fig. 1.
Patent GB-1097462-A (GB)
Title: Lincomycin derivatives
IPC: C07H15/16
Filed: 1965-02-26
Abstract: The invention comprises mono-, di-, tri- and tetra-acylates of lincomycin, other than 2,7 diacylates, wherein the acyl groups are derived from hydrocarbon carboxylic acids containing up to 12 carbon atoms or from halo-, nitro-, hydroxy-, amino-, cyano, thiocyano- or C1- 8 alkoxy-substituted derivatives thereof, acid addition salts thereof, and their preparation by partial or total acylation, followed if desired by partial hydrolysis.  The acylates may be used to purify lincomycin.  Trans - 4 - propyl - L - hygric acid and its hydrazide are prepared by refluxing an acylate of the invention in hydrochloric acid or hydrazine respectively.  The acid may be converted to its fluorosilicate.  The compounds of the invention have antibacterial and growth-promoting activity and may be used in chicken feeds.
Patent GB-593955-A (GB)
Title: Improvements in and relating to the dyeing of cellulose derivatives or nylon and anthraquinone compounds therefor
IPC: C09B1/514
Filed: 1945-04-06
Abstract: Dyestuffs of the general formula <FORM:0593955/IV/1> wherein D is an ethylene, trimethylene, or propylene group, Q is a phenylene group, R is H, a methyl or ethyl group, Z and Z1 are H or a hydroxyl group and n is 1 or 2, are obtained by condensing quinizarin, 1 : 4 : 5-trihydroxyanthraquinone, 1 : 4 : 8-trihydroxyanthraquinone or 1 : 4 : 5 : 8-tetrahydroxyanthraquinone with the corresponding amino compound NH2-Q-O-D-(O-D)n-O-R in the presence of a leuco compound of a hydroxyanthraquinone preferably in an amount of at least 10 per cent by weight of the polyhydroxyanthraquinone. Advantageously, the condensations are carried out in the presence of an acid condensing agent, e.g. boric acid, phosphoric acid, sulphuric acid, hydrochloric acid, stannous chloride or stannic chloride in a diluent such as pyridine or tetrahydrofurfuryl alcohol using a dispersing agent, e.g. a sodium salt of a sulphonated oleic acid ester.  These compounds may be used for colouring nylon and cellulose derivatives.  In examples: (1) 1-hydroxy-4-p-[b -(b -hydroxyethoxy)-ethoxy]-anilino-anthraquinone is obtained by refluxing quinizarin, bucoquinizarin, boric acid and p - [b  - (b  - hydroxyethoxy) - ethoxy] - aniline.  Similar compounds can be obtained using instead of p - [b  - (b  - hydroxyethoxy) - ethoxy] - aniline, o - [b  - (b  - hydroxyethoxy) - ethoxy] - aniline, o - chloro - p - [b  - (b  - hydroxyethoxy) - ethoxy] - aniline, p - [g - (g  - hydroxypropoxy) - propoxy] - aniline and p - acetamino - o - [b  - (b  - hydroxyethoxy)-ethoxy]-aniline; (2) the corresponding ethoxy and methoxy compounds are obtained as in (1) using instead of p-[b -(b -hydroxyethoxy) - ethoxy] - aniline, p - [b  - (b  - ethoxyethoxy) - ethoxy] - aniline or p - [b  - (b  - methoxyethoxy)-ethoxy]-aniline; (3) the corresponding 1 : 5 : 8 - trihydroxy - 4 - substituted - anthraquinone and 1 : 5 - dehydroxy - 4 - substituted anthraquinone are obtained as in (1) and also 1 : 5 : 8-trihydroxy-4-o-chloro-p-[g -(g -hydroxypropoxy) - propoxy] - anilino - anthraquinone; (4) 1 - hydroxy - 4<p - {b  - [b  - (b  - hydroxyethoxy) - ethoxy] - ethoxy} anilino>-anthraquinone and the corresponding compound unsubstituted in the 1-position are obtained as in (1).  Anilino derivatives of the formula NH2-Q-O-D-(O-D)n-O-R are obtained by condensing o- or p-chloronitrobenzene with a sodium alcoholate Na-O-D (O-D)n-O-R (obtained by the action of sodium on the appropriate alcohol) and reducing with hydrogen in the presence of a nickel catalyst.
Patent GB-1488356-A (GB)
Title: Manufacture of a planographic printing plate
IPC: G03F7/07
Filed: 1974-02-26
Abstract: 1488356 Quaternary ammonium compounds AGFA-GEVAERT 19 Feb 1975 [26 Feb 1974] 8708/74 Heading C2C [Also in Division G2] The preparation of a number of organic cationic compounds useful in the treatment of exposed photographic materials to produce planographic printing plates (see Division G2) is described. These compounds are: (a) Seven different compounds of general Formula I (b) Five different compounds of general Formula II (c) Two different compounds of general Formula III (d) Three different compounds of general Formula IV (e) Three different compounds of general Formula V Melting point data are given for the specific compounds.
Patent GB-733950-A (GB)
Title: Etching preparation for use in the production of lithographic printing plates
IPC: B41N3/08
Filed: 1953-03-30
Abstract: Lithographic printing-plates made of metal, such as zinc or aluminium, are treated, to improve adhesion of water thereto, with an aqueous solution prepared by dissolving a mixture of solid ammonium biphosphate and solid ammonium nitrate in water, and adding to the solution a second mixture of one or more solid chromium salts and one or more solid silico-fluorides.  The proportions and substances used may be, for example:-ammonium biphosphate 2 parts, ammonium nitrate 2 parts, water 80 parts, sodium silico-fluoride 1 part, chromic chloride 1 part.  The solution is flowed over the plate, which is rubbed lightly with a sponge or cotton-wool for 2-3 minutes.
Patent GB-179758-A (GB)
Title: Improvements in tools for removing rubber tyres from motor and the like vehicle wheels
IPC: B60C25/02
Filed: 1921-03-22
Abstract: 179,758. Wharton, D. March 22, 1921. Tyres, elastic, and tyre covers, tools for removing and replacing.-A tyre tool is formed with pivoted jaws 1, 2. The jaw 2 has a cross-head 4 to act on the side of a cover, and is fitted with a handle 6 which tapers to a thin edge for use as a tyre lever. The jaw 1 is interchangeable with a jaw 10 for use with wire and disc wheels, and has a lateral hook 5 for gripping a wheel-spoke. The jaw 10, as shown in Fig. 3 in use as a wire wheel, has a cross-head 11 which passes between the spokes 13 to engage the rim edge 14. For disc wheels, the jaw 10 engages one edge of the tyre rim.
Patent GB-557735-A (GB)
Title: Improvements in grid electrodes for electron discharge devices
IPC: H01J19/38
Filed: 1942-06-26
Abstract: 557,735. Making grids for electron discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. June 26, 1942, No. 8822. Convention date, June 28, 1941. [Classes 83 (ii) and 83 (iv)] [Also in Group XL] Soldering.-A grid particularly for use in velocity modulation tubes comprises a number of strips 12 fixed at their ends to an annulus 10, the strips all being bowed longitudinally in the same direction so that on expansion by heat the edges remain in the original plane. Tabs 14 on the annulus serve for fixing the grid to a support. The grid is made by placing the annulus 10 on the shoulder 16, Fig. 3, of a jig 17, placing a ring of solder 20 in the annulus, then bending the strips 12 to the form shown in Fig. 1 so that they lie in the slots 19 with their ends between the head 18 and the annulus and setting the tabs 14 in place ; the assembly is then heated in a hydrogen atmosphere.
Patent GB-1002694-A (GB)
Title: Improvements in or relating to engine ignition devices
Inventor: VEZIN PIERRE
IPC: F02P19/02
Filed: 1962-03-07
Abstract: 1,002,694. Ignition devices; liquid fuel admission devices; valves. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFANTS. March 7, 1962 [March 7, 1961; April 19, 1961], No. 8836/62. Heading F1B. An ignition device for spark ignition engines comprises a precombustion chamber 43, 145 with an injection orifice opening into the upper part thereof, spaced electrodes 40, 45 or 140, 146, an electromagnetic valve 5 providing control of the injection period and electrical means controlling the electromagnetic valve associated with the distributer. In Fig. 1 the electromagnetic valve 5 is controlled by means of an electrical contactor 6 associated with the distributer head 8. When the valve 5 is opened it allows passage of fuel to the injector igniter 9. The supply circuit is interrupted by separation of the terminals of the ignition contact breaker. In a modification (Fig. 7) the electromagnetic valve is contained in the injector igniter. Compressed air is supplied at 150. The solenoid coils 17 are supplied through a terminal 157. In Fig. 1 the carburetter is shown at 12. It is stated that the whole of the fuel may be injected. The start of the injection period may be controlled by controlling the angular setting of contactors according to the position of the accelerator pedal. The electromagnetic valve may be controlled by a permanent magnet and a coil which emits an electrical impulse each time the magnet passes in front thereof. The impulse amplified by means of an amplifier which may be transistorised is employed to control the electromagnetic valve. The ignition system may be transistorised.
Patent GB-272646-A (GB)
Title: Improvements relating to apparatus and methods for measuring electric quantities
IPC: H04B3/46
Filed: 1926-04-01
Abstract: 272,646. Siemens Bros. & Co., Ltd., and Rosen, A. April 1, 1926. Measuring the unbalance of telephone and like lines.- For measuring the out-of-balance capacities of the wires of telephone cable quads, an alternating current bridge is employed comprising two arms of equal resistance R1, R2 and two arms constituting condensers K1 C1. Two conductors A. B of the quad are connected to the junctions of the resistances PI, R2 and condensers C1, K1 and to a source of alternating current L, the other two conductors C. D being connected to the junctions of the condenser arms K1. C1 and of the resistance arms R1 R2. A telephone or other detector T is connected as shown. An additional pair of condensers K2, C2, of which C2 is variable, may be connected across the resistances R1, R2. The connections of the quad conductors A - - D to the bridge are made through a switch M having four positions, in one of which the connections are as shown; in the second position the conductors C, D are interchanged; in the third position the conductors A, C and B, D are interchanged, and in the fourth position the conductors A, B and C, D are interchanged with respect to the third position. Balance is obtained in each position by adjusting the condenser C1 until a minimum sound is obtained, then adjusting the condenser C2 to reduce the sound further, then again adjusting C1 to give no sound. The condenser C1 is graduated to read the difference of the capacities of the condensers K1, C1 From the four readings thus obtained the required out-of-balance capacities may be determined. Instead of two condensers K1, C1 a condenser consisting of two sets of fixed elements and one movable element may be employed, the movable element being connected to the detecting instrument and one wire of the quad.