baber/WOPTO huggingface dataset:
Patent GB-152107-A (GB)
Title: Improvements in or relating to intercommunication telephones
IPC: G08B5/36
Filed: 1919-07-04
Abstract: 152,107. Murray, R. L., and Telephone Manufacturing Co. July 4, 1919. Intercommunication systems of the central battery type are provided at one or more stations with relays or signal devices connected to each outgoing line in such a way that when a line is in use the corresponding relay &c. is energized to indicate that it is busy. In the arrangement shown, relays F<2>, F<3>, F<4> controlling lamps G<2>, G<3>, G<4> are connected to the outgoing lines 2, 3, 4 and to a common earth lead E. When a line is in use, it is connected to the battery lead C over an inductance L and answering key D at the called station, thereby energizing the corresponding relay F<2>, say, and lamp G<2>. The relay and lamp are combined structurally as shown in Fig. 3. The armature Q is supported by two rocking pivots Q<1>, Q<2> formed as extensions of the armature and engaging a depression P cut in the cylindrical casing M. A screw U passes between the pivots Q<1>, Q<2> and secures the armature in position. A screw U<1>, 'passing through a central hole Q<3> in the armature, limits the movement of the latter. The core M<1> is formed with a threaded head M<2> which screws into the shell M. The signal lamp W screws into an ebonite plug V which is threaded to engage the shell M, or spring W<1> making contact between the core and one terminal of the lamp. The relay may be used upside down, the head of the screw U then forming the surface on which the armature rocks, while the depression P retains the armature in position.
Patent GB-682717-A (GB)
Title: Improvements in or relating to plant for the recovery of waste heat from furnace gases
Inventor: GREGSON WILLIAM
IPC: F02C1/05
Filed: 1950-07-06
Abstract: 682,717. Gas turbine plant. SPENCER-BONECOURT, Ltd. July 6, 1951 [July 6, 1950],. No. 16899/50. Addition to 603,874. Class 110(iii) Waste gases from industrial furnaces 3-3c are drawn through a conduit 4 by a fan 1 and discharged to atmosphere through a passage 27. The gases impart heat through a heat-exchanger 6 to air or other elastic fluid which is delivered by a compressor 7 to a gas turbine 8. The air exhausted by the turbine returns to the compressor by way of a cooler 9. While the furnaces are being started up, dampers 21, 23 and 24 are closed and damper 26 is opened, natural draught being provided by a chimney 25. When the waste gases are hot enough, damper 24 is opened, the fan 1 is put into operation, and damper 26 is closed. The turbine 8 is driven by a starter motor 16 until it is selfrunning. Additional heat can be supplied to the waste gases by a burner 12. The combustion of the fuel supplied to the burner 12 is supported by the oxygen content of the waste gases, which may be augmented by air supplied through an annular opening 13. The flow of gases through the furnaces is controlled by varying the speed of the fan 1. Flow in excess of that required by the heat exchanger 6 is by-passed through a waste-heat boiler 19 or through a by-pass 22, dampers 20 and 21 or 23 being opened for this purpose. The by-pass may be controlled automatically in accordance with the turbine speed. A separate variable-speed motor may be used for drawing the waste gases through the boiler 19. The exhaust passage 27 may con tain an air, heater for the furnaces, an economiser for the boiler 19, or a second waste-heat boiler.
Patent GB-1015672-A (GB)
Title: Improvements relating to the machining of timber
Inventor: SERRY VICTOR
IPC: B27B33/12
Filed: 1961-05-10
Abstract: 1,015,672. Sawing. PHOENIX TIMBER CO. Ltd. May 10, 1962 [May 10, 1961], No. 16980/61. Heading B5L. A circular saw for timber comprises a toothed blade 1 having a cutting tip 3 mounted on each tooth 2, each tip being of substantial length in the radial direction as compared to its width in a direction normal to the plane of the blade, being substantially symmetrical about the plane of the blade, and mounted so that the radially outer end leads the radially inner end in the normal direction of rotation of the blade, the tip having a cutting edge at its radailly outer end and along at least one side, the side cutting edge projecting outwardly from the plane of the blade by a distance which decreases at least towards the radially outer end of the tip. The saw has four teeth 2 to each of which is welded or brazed a tip 3 of hard steel. Each tip has its top 5 and side faces 6 bevelled to form cutting edges 8, 9, each edge 9 being inclined from the plane of the blade by a distance which increases towards the radially inner end of the tip. The faces 7 of the tip may be at an angle of 30 degrees to the radius of the saw and may be bevelled to form a sharp cutting edge 9 on one side of the tooth; the faces would then be alternately bevelled. In another embodiment, the sides 20, Fig. 5, of the tips are convex and the face of the tip substantially over. The side edges effect a planing action on the sides of the kerb cut by the saw.
Patent GB-560966-A (GB)
Title: Improvements relating to corrugated or similar roofing
IPC: E04D12/00
Filed: 1942-11-30
Abstract: 560,966. Roofs. JENKINS, R. W. Nov. 30, 1942, No. 16992. [Class 20 (iv)] In a roof formed of corrugated or similar irregular sheets a draught, light and weather proof mattress or blanket C is interposed between the roofing material A and its underlying support, e.g. a roof purlin B, the mattress C being originally of even thickness but capable of local compression so as completely to fill the gap between the roofing material A and the support B. Glass wool, slag wool or other mineral fibres may be used as a filling for the mattress, while screw-hooks D engaging the purlin B and fitted with nuts may be employed for effecting the necessary compression.
Patent GB-776055-A (GB)
Title: Process for the preparation of compounds of the pregnane series
IPC: C07J5/00
Filed: 1953-06-19
Abstract: The invention comprises 3b ,11a ,21-triesters of 3b ,11a ,17a ,21 - tetrahydroxy - pregnane - 20-one and the preparation thereof by subjecting a 3b ,11a ,21-triacyloxy-pregnane-17-yl-cyanide-20 or a mixture of isomers thereof to hydroxylation by an oxidizing agent, e.g. osmium tetroxide or potassium permanganate, followed if necessary by reductive splitting of the oxidation product, e.g. with sodium sulphite, to obtain a 3b ,11a ,21-triacyloxy - 17a  - hydroxypregnane - 20 - one, which may be saponified or re-esterified, e.g. to the benzoyloxy ester, trifluoroacetic ester, and the carbomethoxy, carboethoxy and carbobenzoxy compounds.  The 3b ,11a ,21 - triacyloxy - pregnene - 17 - yl - cyanide - 20 or a mixture of isomers thereof may be prepared from a triester of 3b ,11a ,21 - trihydroxy - pregnane - 20-one by the addition of hydrocyanic acid and splitting off of water.  An example describes the preparation of 3b ,11a ,17a -triacetoxy-17-hydroxy - pregnane - 20 - one. Specifications 653,480 and 768,123 are referred to.
Patent GB-913963-A (GB)
Title: Improvements in or relating to symbol displaying electron discharge tubes
Inventor: SINCLAIR IAN ROBERTSON
IPC: H01J31/16
Filed: 1960-05-16
Abstract: 913,963. Cathode-ray tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Feb. 2, 1961 [May 16, 1960], No. 17129/60. Class 39 (1). A symbol displaying electron discharge tube comprises, within an evacuated housing 1, a fluorescent screen 4, an electron gun 2 arranged to flood the screen uniformly with electrons, and two spaced mesh electrodes 6, 7, extending transversely across the beam having between them a plurality of symbol electrodes 9 each provided on the side facing the gun with a layer of insulating material having a high co-efficient of secondary emission and a low first secondary emission cross-over. In operation, a negative pulse applied to one of the symbol electrodes lowers its potential substantially below the first secondary emission cross-over potential of the insulating material at which it is initially held by the mesh electrodes, and is held at cathode potential by the electron beam, thus casting a shadow on the fluorescent screen. Erasure is by application of a negative pulse to the cathode, the velocity of the electron beam being such as to charge-up the symbol electrodes to the potential of the nearest secondary electron collector, i.e. the mesh electrodes. Suitable insulating materials are magnesium fluoride, magnesium oxide and talc. The electron beam from the gun 2 is accelerated by electrode 11 and collimated by electrode 12 so that the electrons travel in parallel paths to the first mesh electrode 6.
Patent GB-1292322-A (GB)
Title: Cleaning apparatus
Inventor: KREIHE HERMANN
IPC: A47L13/12
Filed: 1969-10-02
Abstract: 1292322 Brushes H KREIHE 2 Oct 1969 [21 Oct 1968] 17212/69 Heading A4K A liquid applicator for simultaneously disinfecting, cleaning and drying comprises a plate 1 of synthetic plastics material having on one side thereof a number of grooves 2 in which sponges 3-6 are set and on the other side thereof a number of chambers 10-13 for disinfecting and cleaning agents, the chambers being in communication with the sponges through ducts 15-18 which can be closed by displacement of a slide or slides 19. The edges of the plate the rear end of which is wider than the leading end may be bent to form lateral guides perpendicular to the grooves. The sponges may be of increasing height in the direction opposite to that in which the applicator is moved in use.
Patent GB-1360461-A (GB)
Title: Isoflavone derivative
IPC: A23K1/16
Filed: 1971-05-26
Abstract: 1360461 Compositions comprising isoflavones CHINION GYOGYSZER-ES VEGYESZETI TERMEKEK GYARA RT 26 May 1971 [27 May 1970] 17295/71 Heading A5B [Also in Division C2]  Isoflavone compounds of the general formula wherein R<SP>1</SP> is a C 1-18  alkyl group optionally substituted by hydroxy, C 1-7  alkoxycarbonyl, halogen or a N-containing heterocyclic group, or R<SP>1</SP> is a benzyl, halobenzyl or nitrobenzyl group; R<SP>2</SP> and R<SP>3</SP> each is hydrogen, C 1-4  alkoxy, or nitro; R<SP>4</SP> is H, methyl or carboxy;  R<SP>7</SP> is alkyl or n is 0 or 1; with the proviso that R<SP>1</SP> is not C 4-13  branched alkyl or C 4-6  straight chain alkyl, are used in anabolic animal feed compositions and in a method of treating livestock for increasing the weight yield of animals. The compositions may also contain life supporting substances such as vitamins, amino acids, choline chloride, salts of mineral acids and trace elements, or growth promoting substances. Pharmaceutical compositions suitable for human or veterinary anabolic treatment comprise a compound of formula (I) as defined above with the further proviso that R<SP>1</SP> is not C 1-4  alkyl substituted by C 2-5  alkoxy-carbonyl; R<SP>1</SP> is methyl when R<SP>2</SP> and R<SP>3</SP> are hydrogen, and R<SP>1</SP> is not ethyl when R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are hydrogen and n is zero, in admixture with a pharmaceutical or veterinary carrier, preferably in forms suitable for oral administration. Parmaceutical compositions suitable for catabolic treatment comprises a compound of formula (I) wherein R<SP>1</SP> is a C 4-12  branched alkyl or C 4-6  straight chain alkyl group; R<SP>2</SP> and R<SP>3</SP> are hydrogen; R<SP>4</SP> is hydrogen or methyl; R<SP>7</SP> is alkyl and n is 0 or 1.
Patent GB-1147944-A (GB)
Title: Improvements relating to methods of manufacturing multiple magnetic heads
IPC: G11B5/265
Filed: 1966-04-20
Abstract: 1,147,944. Making magnetic heads for use with tape. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 20 April, 1966 [22 April, 1965], No. 17319/66. Heading G5R. [Also in Division B3] A method of making a multiple magnetic head for use with magnetic tape, wherein the head comprises per track at least two cores interconnected by a screening assembly, each containing at least one gap filled with an unmagnetizable material, comprises forming at least one initial gap between soft magnetic parts, defining the spacing between the gaps by a channelled component, securing the screening assembly in the channel by bonding material which is fluid at a temperature below the softening temperature of the gap-filling material, cutting the resultant assembly through a plane passing through the whole length of the channel, machining the cut face of the assembly and completing the magnetic circuits of the cores. Gaps 7, 8 are formed by pressing ground and polished flat surfaces of parts, 4,5, 6 towards each other, with glass in the gaps and heating the assembly to about 600‹ C. A channel 11 is formed in the part 5 and a screening assembly 3 inserted therein. The assembly 3 consists of plates 13 of unmagnetizable sintered oxidic material, plates 14 of silver and plates 15 of a sintered oxidic ferromagnetic material, the plates 13, 14, 15 being held together by a vitreous enamel. A NiCr layer is evaporated on the mating surfaces of the channel 11 and the assembly 3 and a layer of copper then evaporated on the NiCr. The screening assembly 3 is then soldered in the channel using a lead-tin solder. After soldering the magnetic circuits of cores 1, 2 are closed by yokes 16, 17. The yokes are preferably inclined to the plates 14, in which case the plates 13 are omitted. The assembly is then cut through the plane 18 and the front surfaces 12 formed by conventional grinding and polishing.
Patent GB-1579578-A (GB)
Title: Film scanning apparatus
IPC: B41F33/00
Filed: 1977-04-26
Abstract: The film assemblies intended for producing offset printing plates are electrooptically scanned for their area coverage, i.e. the ratio of bright to dark areas. For this purpose, the film assembly (1) is fed through a measuring chamber (6) between a light source (2) and a pickup (3). Pairs of rollers (7, 8) are used to convey the film assembly (1). While the film assembly (1) is being conveyed, it is conveyed in a stretched state through a loading slot (4) and an unloading slot (5) of the stationary measuring chamber (6). <IMAGE>
Patent GB-734985-A (GB)
Title: Improvements in or relating to the manufacture of shoes
IPC: A43B21/00
Filed: 1953-06-24
Abstract: 734,985. Turning covers of platform shoes. BRITISH UNITED SHOE MACHINERY CO., Ltd. June 24, 1953 [June 26, 1952; June 28, 1952], No. 17458/53. Classes 17 (1) and 17 (2). Relates to the turning down of the heel end portion of a platform cover of a force-lasted shoe from a position adjacent the upper to a position around the sides of the platform. The assembled parts off the last with a heel wedge secured to the sock lining only at its heel end, i.e. with the shank portion unattached so as to permit flexing of the platform in the shank, as clamped at the heel end and the shank is bent to foreshorten the shoe and permit the cover to be pulled into the desired position. In one form of apparatus described, Fig. 1, as horse-shoe shaped plate 10 carried by a bar 20 which may be clamped in an adjusted heightwise position by screws 22 co-operates with a lower clamping member 12 against the upper roughened face of which the lower face of the heel is engaged to hold the shoe assembly in position when the rod 28 which carries the member 12 is elevated by depression of a treadle 46. A spring-held pawl and rack 54, 56 holds the shoe clamped until a projection 64 on the rack 54 is kicked. The free edge of the platform cover C is engaged between the jaws 14, 16 of a gripper which is pulled down by pressure on a treadle 86, movement of the grippers being guided by engagement of a projection 112 thereon with a surface 110 on the machine frame to conform the path of the gripper jaws to correspond with the rake of the back of the heel H to reduce the strain on the cover C, while it is being pulled down. The operator bends the platform by his hands and works his thumbs between the cover and the upper to assist turning. In a second form of apparatus, Figs. 7-10, (not shown), the gripper mechanism and its operating parts are similar to those of the first but the shoe supporting device is modified. It consists of a block adjustably supported heightwise on the machine frame and carrying on its outer bevelled end a plate the inturned edge of which is engaged with the then forward end of the heel wedge to prevent it tilting under the strain of the grippers. In the pulled down position of the heel cover the portions of the upper, sock lining and cover adjacent the seam are accommodated in a peripheral recess in the edge of the platform.
Patent GB-651719-A (GB)
Title: Preparation of intermediates useful in the preparation of dehydrocorticosterone acetate
IPC: C07J75/00
Filed: 1947-07-03
Abstract: Adrenosterone is obtained by reacting a stereoisemer of 4-bromo-3 : 11-diketo-17-hydroxy-20-acyloxy pregnane, e.g. the 17-b -hydroxy-stereoisemer which is prepared by acylating 3 : 11-diketo-17 : 20-dihydroxy pregnane, with a tertiary amine or pyridine to form the corresponding stereoisemer of D 4:5-3 : 11 - diketo - 17 - hydroxy - 20 - acyloxy-pregnene and hydrolysing under saponifying conditions, e.g. with aqueous alkaline methanolic solution, to produce a stereoisemer of D 4:5-3 : 11-diketo-17 : 20-dihydroxy pregnene which is reacted with an oxidizing agent, e.g. periodic acid, chromic acid or lead tetracetate, to produce adrenosterone. The acyl group in the starting material may be derived from acetic, propionic, butyric, valeric, caproic, capric, benzoic or toluic acids.  A detailed example of the process is given.
Patent GB-727052-A (GB)
Title: Improvements in or relating to television receivers
Inventor: LAMONT KEITH
IPC: H03F3/36
Filed: 1952-07-11
Abstract: 727,052. Valve amplifying circuits. CINEMATELEVISION, Ltd. July 10, 1953 [July 11, 1952], No. 17503/52. Class 40 (6). A valve amplifying circuit, particularly for amplifying television video signals including a D.C. component, comprises a cathode-follower valve 1 directly connected through a resistor 4 to the control grid of an output valve 5, the said grid being returned to a point of negative potential through the anode-cathode path of a pentode 9. The control grid of the pentode 9 is connected to the slider of a potentiometer 11 in series with a resistor 12 and the cathode of the valve is connected as shown to resistors 10 and 14. The slider 11 is set to a position, which is determined mathematically in the Specification, such that variations in the potential of the negative-supply line do not affect the current flowing in the pentode 9 and hence the mean potential established at the control grid of the output valve 5.
Patent GB-274074-A (GB)
Title: Improvements in or relating to the treatment of fabrics or articles containing fibres or threads of organic derivatives of cellulose
IPC: D01C5/00
Filed: 1927-07-01
Abstract: 274,074. British Celanese, Ltd., (Assignees of Dreyfus, C., Dort, R. G., and Platt, H.). July 8, 1926, [Convention date]. Carbonizing fabrics.-The carbonizing process is applied to the treatment of mixed fabrics or articles comprising the fibres or threads of acetates, propionates, or other organic esters or ethers of cellulose mixed with vegetable fibres. Aluminium chloride is a suitable carbonizing agent, and the lustre of the esters or ethers of cellulose may be preserved by adding to the aluminium chloride a protecting salt such as Glauber salt, or a soaping treatment may be used to restore the lustre. Rayon, or other regenerated artificial silk, is carbonized like ordinary vegetable fibres by this treatment which may therefor be used to remove this substance from the cellulose esters or ethers as well as from wool waste, woollen rags or other animal fibres. The dye resist properties of cellulose acetate, &c. to wool dyes is unaltered by the carbonization treatment. The addition of Glauber salt to the baths used prevents the delustering of the cellulose acetate or other organic esters due to the high temperature in such treatments as bleaching, dyeing, printing, steaming, &c. Instead of Glauber salt, any of the salts enumerated in U. S. Patent Application 45416 or the corresponding British Specification 246,879 can be used. The process may be used in the production of embroidery from cellulose acetate or similar fibres on a cotton or jute canvas, which latter is removed by carbonizing with hydrochloric acid, rinsing, and then soaping.
Patent GB-810479-A (GB)
Title: Improvements relating to storage receptacles for microscope slides
IPC: G02B21/34
Filed: 1955-06-17
Abstract: 810,479. Labels. JORGENSEN, J. V. June 17, 1955, No. 17649/55. Class 73 [Also in Group XX] A tab of transparent material contains a label card 15 inserted through one edge thereof and, is attached by a dovetail tongue 11 and groove 13 to the edge of a tray 1 adapted to carry microscope slides. To facilitate removal of the card, a slot may be provided in the surface of the tab through which the card may be engaged by means of a pin.
Patent GB-129993-A (GB)
Title: Process for the Manufacture of Plastic Materials.
Inventor: JEAN BRUHAT
IPC: C08G8/00
Filed: 1919-07-16
Abstract: 129,993. Bruhat, J. Nov. 4, 1916, [Con. vention date]. Void [Published under Sect. 91 of the Act]. Varnishes.-An initial liquid phenol-formalde- . hyde condensation product is prepared by the reaction of phenols (phenol, cresols, naphthols) with anhydrous polymers of formaldehyde (para-formaldehyde, trioxy-methylene) in the presence or absence of traces of alkaline catalysts, and with the addition of certain acids can be used as a varnish.
Patent GB-372984-A (GB)
Title: Remote controlled device for inserting and extracting primers for large bore guns
IPC: F41A19/57
Filed: 1931-06-19
Abstract: 372,984. Ordnance. SCHNIEDER ET CIE, 42, Rue d'Anjou, Paris. June 19, 1931, No 17848. Convention date, Aug. 18, 1930. [Class 92 (ii).] Breech mechanism.-A device, associated with the axial vent of a screw breech-block, for inserting and extracting primers comprises a flexible or telescopic shaft transmission from a remote point which is independent of the breechblock and its carrier and which is connected to a cam or like mechanism on the carrier that operates successively to slide the lock-frame, extract the fired primer, convey a.new primer from a magazine into line with the vent, and insert the new primer. Springs operate to restore the parts to their initial positions, the device for conveying the primers then receiving a new primer from the magazine. Fig. 3 shows a hand gear t<19>, concentric with the gun trunnions, connected by a telescopic shaft t<14>, t<13> to a second telescopic shaft t<8>, t<7>, Fig. 1, movable with the breech screw carrier b to the position shown in broken lines in Fig. 2 during the opening of the breech. The shaft t<7> is connected by bevel gearing with a cam shaft t on the carrier b. The cam p acts through a transverse slide f<2>, Fig. 9, and links f<6>, f<12> to raise the lock-frame f. The cam q, through a slide q<2>, acts to raise the lever h to unseat the primer and rock the lever about a pivot h<1> to extract it from the vent. The cam r rocks the arm n which receives the primer from the magazine i, in clips n<1>, and conveys it to a position in line with the vent, whilst the cam s operates a lever o, Fig. 7, on the arm n to insert the primer in the vent. An extension n<4> on the arm n serves to retain the primers in the magazine during the swinging movement of the arm n. The primer magazine i is retained in a slot k on the carrier by a spring pin i<2> and the slot carries a spring-pressed rod m, Fig. 7, for feeding the primers to the clips n<1>. A safety device prevents the return of the lock frame to firing position unless the breech screw is locked.