baber/WOPTO huggingface dataset:
Patent GB-245811-A (GB)
Title: Safety device for printing machines
IPC: B41F33/00
Filed: 1924-08-14
Abstract: 245,811. Schindler, L. P. Aug. 14, 1924. Guards; interconnecting-guard with starting- gear.-In cylinder printing-presses, a guard is interlocked with the starting-gear and means are provided for preventing the platen from being thrown forward and the inking-rollers from being displaced during working of the machine. A canvas, wire gauze, or like flexible shutter 5, normally wound up on am axle 4 by a weight or spring 9, is connected at its free end by a cross rod 6 to carriages 7 provided with rollers 8 running in curved channel-shaped guides 2, each of which terminates in a box 3. The shutter, when pulled down, passes under guide rods 26 and is secured by a manually-releasable catch 19, which hooks over the cross rod 6. A nose 18 on each carriage 7 then enters the box 3 and lifts a detent 12 from a ratchet wheel 14 connected by a crank 15 and rod 16 to a lever 17 or other starting-means. When the press is started, a cam 20 on the ratchet-wheel shaft 11 rocks a pawl 13 into engagement with a stud 22 on the part 18, so preventing return of the shutter if the catch 19 should be raised. Downward projections 23 on .the bar 6 engage the platen and prevent it from being thrown out, and horizontal lugs 25 on the rod 16 coact with the inking-roller bearings 24, or the cover-plate therefor, when the lever &c. 17 is moved to start the machine, in order to prevent displacement of the rollers should the fixing-screws be omitted.
Patent GB-1170145-A (GB)
Title: Diffused Junction Semiconductor Devices and Methods for Fabricating such Devices.
IPC: C30B31/06
Filed: 1967-04-27
Abstract: 1,170,145. Semi-conductor devices. TEXAS INSTRUMENTS Inc. 27 April, 1967 [29 April, 1966], No. 19453/67. Heading H1K. A zone of one conductivity type having a non-uniform surface resistivity is formed in the surface of a semi-conductor body of the opposite type by introducing impurities of the one type into a surface region of the body, forming an insulating mask to cover only part of this region and then heating in oxygen to diffuse the impurities further into the body while forming an oxide layer which getters the impurity thereby increasing the surface resistivity beneath the aperture. When forming a transistor using this method the body (collector zone) is a 10 mil thick silicon wafer and the impurity, boron, is introduced through a hole in a genetic oxide layer by heating in a gaseous mixture of boron tribromide and nitrogen. After etching to remove surface residues the wafer is heated at 250-500 C. in a mixture of oxygen and tetraethoxysilane to deposit silica in the hole. Alternatively the silica may be deposited by sputtering or electron beam evaporation. An aperture is formed within the silica and the wafer heated in an oxidizing atmosphere to effect in-diffusion to form the base region, and gettering. Then, after dip etching to clear the aperture of surface oxides, phosphorus, arsenic, or antimony is diffused into the underlying high-resistivity material to form the emitter zone. Contact holes are then etched in the oxide and contacts formed by evaporation of a layer of metal overall followed by selective etching. Alternatively the existing oxide layers are removed and replaced by new oxide before applying the contacts. Several transistors may be formed in the same body to form part of an integrated circuit or for subsequent subdivision.
Patent GB-1291681-A (GB)
Title: 6-amino-penicillanic acid derivatives and preparation thereof
Inventor: ROGALSKI WERNER
IPC: C07D499/64
Filed: 1971-06-08
Abstract: 1291681 Benzotriazolyl penicillins MERCK PATENT GmbH 8 June 1971 19455/71 Headings C2A and C2C Novel penicillins of Formula I and salts thereof, wherein Z is R<SP>1</SP> is H, C 1 -C 4  alkyl or -COOR<SP>5</SP>, R<SP>2</SP> and R<SP>5</SP> are the same or different and each is H or C 1 -C 4  alkyl, and R<SP>3</SP> and R<SP>4</SP> are the same or different and each is H, C 1 -C 4  alkyl, C 1 -C 4  alkoxy, OH, F, Cl, Br, I, CF 3 , NO 2  or NH 2 , are prepared by reacting 6-aminopenicillanic acid or a salt thereof with a benzotriazolyl fatty acid of formula (II) wherein Z, R<SP>1</SP> and R<SP>2</SP> are as defined above, or an N-acylating derivative thereof. Suitable, such derivatives are the acid halides, anhydrides or mixed anhydrides, azides and reactive esters, or the acid itself together with a condensing agent may be used. The reaction is conducted in a suitable solvent, arid the penicillin may be isolated from the reaction mixture as the free acid or its salt, e.g. with an alkali or alkaline earth metal, ammonia or an amine. When the penicillin has R<SP>3</SP> and/or R<SP>4</SP> as a nitro group, this group may be catalytically hydrogenated to give an amino group. The chlorides of 2-(1H-benzotriazolyl-(1))-propionic acid, 1H - benzotriazolyl - (1) - acetic acid and 5 - nitro - 2H - benzotriazolyl - (2) - acetic acid are prepared by treating the respective acids with PCl 5  or SO 2 Cl 2 . Pharmaceutical compositions having antibiotic activity against gram-positive and gramnegative bacteria comprise a penicillin of Formula I or a physiologically acceptable salt thereof, together with an inert pharmaceutically acceptable carrier or diluent.
Patent GB-1436113-A (GB)
Title: Purification of phosphoric acid
IPC: C01B25/46
Filed: 1972-04-26
Abstract: The novel process is employed to produce purified phosphoric acid or purified phosphate from a phosphoric acid obtained according to the wet process. This involves bringing the acid into contact with a dialkyl ketone having 5 or 6 carbon atoms. Essentially, the weight ratio is from 0.5:1 to 2:1. The phosphoric acid is then extracted into the organic phase, so that a ketone phase is formed in which the H3PO4 concentration is from 28 to 40% by weight. The organic phase is then brought into contact with water or an aqueous solution of a base. An aqueous phase is thus obtained which contains phosphoric acid or a phosphate with a purity higher than that of the phosphoric acid employed obtained from the wet process. If a ketone having 5 carbon atoms is used, the ketone phase is brought into contact in counter-current with water in at least two stages.
Patent GB-1500918-A (GB)
Title: Electrical terminals and connectors
IPC: H01R12/50
Filed: 1975-05-08
Abstract: 1500918 Electrical couplings E I DU PONT DE NEMOURS & CO 8 May 1975 [10 May 1974] 19484/75 Heading H2E As an insulated wire w is pushed into an aperture formed in a terminal by a member 104 projecting from the cover 18 of the connector, the insulation I is pierced by "V" shaped skiving elements at either end of the aperture and contact is made between the wire and the terminal by downturned contact lips 38. The connector may be used as a cable connector, Fig. 7, an edge connector (Fig. 8, not shown) or a surface connector (Fig. 9, not shown). The terminal may be made from a single sheet of conductive material.
Patent GB-832687-A (GB)
Title: Improvements in or relating to telecommunication cables
Inventor: PLEUGER GUSTAV
IPC: H01B11/00
Filed: 1956-06-23
Abstract: 832,687. Cables. KABELWERK DUISBURG A.G. June 23, 1956, No. 19511/56. Class 36. In a telecommunication cable in which the conductors of different circuits are twisted together with twists of different lay, the insulation associated with the conductors of individual circuits is arranged to have such an effective dielectric constant that the tendency of twists of different lays to produce inequalities of the phase angles and propagation times is compensated for. The insulation of the conductors of the circuits having longer lays has a higher effective dielectric constant than that of the circuits with shorter lays. This may be achieved by alteration of the winding pitch of the insulation; by using different materials; or by altering the proportion of air space to solid material. The relative change in dielectric constant should be in accordance with the expression:- where #L/E and #C/C are the relative change in capacitance and inductance due to the change in twist lay and #E/E and #C<SP>1</SP>/C are the compensating relative change in dielectric constant and the resulting relative change in capacitance. When tape insulation with foil edges is used the edges may be coloured as a means of identification.
Patent GB-756052-A (GB)
Title: Improved self regulating brake for automatic torque control
IPC: F16D57/06
Filed: 1953-07-14
Abstract: 756,052. Unwinding; tensioning. DEFONTENAY, P. July 14, 1953 [Oct. 1, 1952; Dec. 19, 1952], No. 19528/53. Class 120 (2). [Also in Group XXXIV] The invention relates to a brake intended primarily for governing the unwinding of material from a reel in such a way as to produce a constant tension. Basically, as shown in Figs. 1 and 2, the brake comprises a gear-wheel 3, rotated by the shaft 1 to be braked, driving a pinion 4 so that the two gears act as a fluid pump forcing liquid through a duct 9 in a housing 5 past a valve 10 into a space 7 enclosed by a fixed casing 6 that may have air-cooling vanes 6a. According as the torque on the shaft 1 varies above the normal, there will be a tendency for the housing 5 to rotate also, and it is arranged that it shall be prevented from doing so by the contact of an arm 11b with a fixed abutment so that the valve 10 is adjusted to throttle the liquid and brake torque is increased and the shaft 1 retarded. Fig. 3 shows the invention applied to an unrolling reel in which constant tension is maintained by arranging for a feeler device 16 to vary the contact point of roller 18 with the arm 14c of a pivoted lever 14 of which the other end is geared to rotate the shaft 10c of the throttle valve 10. It is shown by a simple calculation that if x=the distance between the contact point of roller 18 with arm 14c and pivot 15, F=the force tensioning the fabric, R= the radial of winding on the reel and a=a constant, then x=a/FR-1 or that it is necessary to make x vary hyperbolically by a geometric process with respect to R to produce a constant tension F. A mechanism for doing this is shown in Fig. 5, the arm 14c being shown diagrammatically.
Patent GB-787762-A (GB)
Title: Improved sheet feeding mechanism
IPC: B41F21/05
Filed: 1955-07-06
Abstract: 787,762. Feeding sheets. TIMSONS, Ltd., and DICKINSON, C. H. July 5. 1956 [July 6, 1955], No. 19530/55. Class 100(1)  In sheet-feeding mechanism of the kind wherein the sheets are taken from a stationary feed-board 1 to the grippers of a cylinder 2, such as the impression cylinder of a printing-machine, by opposed sets of grippers 3, 4 adapted to be driven by a Geneva motion, the rotary driver 19 of the motion has locking segments 24, 25 of different arcuate-extents so that the intermittently movable grippers of each set will rest for a longer period at one position e.g. in the sheet-receiving position, than at another position, and driver elements 16, 17 on the driver 19 are so disposed angularly and at different radii from the axis a of rotation that each appropriate motion of the gripper shaft 10 is speeded up to gain time for the longer rest period. The opposed sets of grippers 3, 4 are carried on spaced compartments 7 mounted on the shaft 10 having secured thereto a driven member 11 formed with four radial slots 12-15 spaced 90 degrees apart. The slots 13, 15 are entered and engaged by the driver roller 16, and the slots 12, 14 by the roller 17, and the roller 16 is disposed on the driver 19 at a smaller radius than the roller 17. The cylinder 2 and driver 19 are both geared to a main drive shaft 21. The short locking segment '24 engages arcuate recesses 26. 28 on the member 11, and the longer segment engages the arcuate recesses 27, 29. The angle a between the rollers 16, 17 is substantially less than 180 degrees. In the arrangement shown, the grippers 3 or 4 of either set, in moving with a sheet away from the sheet-receiving position R through 180 degrees, first move to the extent of less than 90 degrees past the sheet-transfer position T and then after only a slight pause, determined by arcuate length of segment 24, move at an increased speed through more than 90 degrees to complete the half revolution, and pause again for an extended period determined by the longer arcuate length of segment 25. Next, the grippers of the same set, as they move towards the sheet-receiving position R do so in two further movements, the first through less and the second through more than 90 degrees, and at speeds which are respectively the same as the first and second movements. The mechanism may be modified to include more than two sets of grippers. Specification 454,295 is referred to.
Patent GB-1284084-A (GB)
Title: PROCESS FOR MAKING 1H-PYRAZOLO[3,4-d]PYRIMIDINES
Inventor: CLARKE ANTHONY GRAHAM REID
IPC: C07D487/04
Filed: 1969-04-17
Abstract: 1284084 Medicines; pyrazolo pyrimidines DELMAR CHEMICALS Ltd 15 April 1970 [17 April 1969] 19684/69 Heading A5B [Also in Division C2] Pharmaceutical compositions of the compounds of the formula I: wherein X is halogen, free or substituted hydroxyl, amino or mercapto and R is hydrogen, C 1-6  alkyl or unsubstituted aryl with a diluent or carrier may be used for the treatment of gout.
Patent GB-731062-A (GB)
Title: Improvements relating to windshield wipers
IPC: B60S1/40
Filed: 1951-08-21
Abstract: 731,062. Windscreen cleaners. OISHEI, J. R. Aug. 21, 1951 [Aug. 26, 1950], No. 19706/51. Class 138 (1). A windshield wiper for a curved windshield comprising an oscillatory actuating shaft, a substantially rigid arm mounted at its inner end on the shaft and movable back and forth in a fixed path about the shaft axis, and a wiper blade resiliently connected to the outer end of the arm, has means whereby the angle between the arm and shaft may be adjusted, so as to move the blade end of the arm toward or away from the windshield and fixed in the adjusted position. The wiper arm, Fig. 2, includes a mounting section 4 secured to the shaft 2, an extension arm 5, pivoted at 6 to the section 4, and a section 8 riveted at 7 to the arm 5. The arm sections 5, 8 are adjustably secured relative to the section 4 by a bolt 10 having at one end, a head 11 bearing against a flange 9 through which the bolt passes, and which is screwed at its other end to engage in a pin 12 on the section 4. The adjustment of the complete arm relative to the shaft is effected by operating a knurled portion 14 on the bolt. The outer end of the arm section 8, Fig. 3, is received in a housing 141 by passing through an aperture 15 therein. A lug 17 or spring detent on the arm engages in an opening 16 in the housing and the arm is locked in position by means of a cam 18 operable by a lever 20 pivoted at 19 to the housing and lockable as by a detent 21. The housing has two depending ears 22 and 23 (see Fig. 4) which carry a pivot pin 24. Two yoke members 25, 26, constituting a primary yoke, are hinged on the pin 24 and are urged downwardly by the ends 28, 29, respectively, of a coiled spring 27 mounted on the pin. The outer ends of the members 25, 26 are pivotally connected to secondary yokes 34, 35 attached at their ends to the wiper blade 40. All the yoke members are channel-shaped and the members 34, 35 can nest within the members 25, 26. Specification 731,105 is referred to.
Patent GB-499147-A (GB)
Title: Improvements in and relating to electric lamp fittings
IPC: F21V17/00
Filed: 1937-07-16
Abstract: 499,147. Electric candle lamps. HAMLYN, S.< >W. July 16, 1937, No. 19728. [Classes 39 (ii) and 75 (iii)] An electric candle-lamp fitting comprises a tubular part 10 of glass or other translucent material adapted to represent the body of the candle in cornbination with a skeleton part of metal or other rigid material comprising an internal portion which supports the tubular part 10 and a lamp with its bulb engaging the inner rim of the tubular part, and an external portion in the form of a downwardly extending leg 20 provided with means such as a lug 22 whereby the whole fitting may be mounted in position at a point intermediate the ends of the tubular part. The upper end of the skeleton is provided with a ring 14 which receives the upper end of the tubular part 10, whilst a limb 24 projecting inwardly from the lower portion of the skeleton carries a screw 25 which extends through an aperture in the otherwise closed bottom 11 of the tubular part and receives a nut 26 which holds the parts together. Beneath the part 20 of the skeleton the tubular part 10 is provided with a longitudinal slot to receive a channel-sectioned keymember 121 which is pivoted at its upper end 122 and adapted to be swung upwardly to facilitate wiring and fixing, after which it is clamped by a screw 123. The lamp holder 30 is mounted on the lower end of an inverted conical coiled spring 31 which is attached to the inside of the skeleton and tends to draw the lamp holder downwardly and hold the bulb against the edge of the tubular part 10. A peripheral flange 15 may be provided on the ring 14 to receive a shade of saucer or other shape ; alternatively the ring may be formed as a gallery provided with shade-fixing screws.
Patent GB-458513-A (GB)
Title: Improvements in rotary-cutter machines for shearing metal and other plates
IPC: B23D35/00
Filed: 1935-07-11
Abstract: 458,513. Shearing. BENNIE, H. O., and ORR, R. W., Drumoyne Road, Govan, Glasgow. July 11, 1935, No. 19797. [Class 83 (iv)] In a shearing-machine with cutters 1, 2 on shafts 10, 6, the cutter 1 is axially adjusted by a sleeve 29 and the setting is indicated by a pointer 13<1> moved over a dial 3<1> by a bell-crank 33. The cutter is adjusted according to the thickness of work by slide blocks 11, 12 and the setting is indicated by a pointer 13. Springs 26 or other means are provided by taking up the slackness in the linkage. The lower cutter 2 may be adjustable or replaced by a straight blade or blades.
Patent GB-458515-A (GB)
Title: Improvements in and relating to self-lighting cigarettes
IPC: A24D1/08
Filed: 1935-07-11
Abstract: 458,515. Igniting-compositions; striking-surfaces. MARGOLIS, M., 6, Pump Court, London, and BIDDLE, J., 53, Grace- Dieu Road, Whitwick, Leicestershire. July 11, 1935, No. 19841. [Class 50] In a cigarette having an igniting tip as described in Specification 417,539, starch is added to the igniting composition. In a preferred form, the composition consists of potassium or other chlorate, a dried mucilage (e.g. gum acacia), starch, manganese dioxide, silica, and carbon ; and the cigarette is ignited by rubbing on a surface comprising red phosphorus, antimony trisulphide, a dried mucilage, and carbon. The Provisional Specification mentions the use of shellac instead of gum acacia.
Patent GB-1277343-A (GB)
Title: Improvements in or relating to hybrid electrodes
IPC: H01M4/86
Filed: 1970-04-24
Abstract: 1277343 Coated carbon powder SIEMENS AG 24 April 1970 [25 April 1969] 19899/70 Heading C1A [Also in Divisions C7 and H1] Carbon powder coated with a mixture of cobalt oxide and aluminium oxide is prepared by first mixing carbon powder, water and an aqueous solution of CO(NO 3 ) 2 .6H 2 O and Al(NO 3 ) 3 .9H 2 O, and then drying the mixture in air at 110‹ C. and then heating at 800‹ C. in a carbon dioxide atmosphere. Instead of carbon powder, carbonyl nickel powder can be used as the substrate for the oxides. The coating of carbon powder with P.T.F.E. and with Ag by first treating with a solution of AgNO 3  and reducing are also referred to.
Patent GB-1468809-A (GB)
Title: Conveying particles
IPC: G01N1/22
Filed: 1974-04-26
Abstract: 1468809 Pneumatic discharge of hopper BRITISH STEEL CORP 26 April 1974 [26 April 1973] 19956/73 Heading B8A [Also in Division G1] A representative sample of particulate material in a hopper is removed by fluidizing the material and passing an upward jet of gas to approximately midway of the thus formed fluidized bed. In the figure, material to be sampled for plasma torch or arc optical emission analysis is placed in the bottom 18 of hopper 10. Fluidizing air enters through pipe 28 and porous floor 20. Entraining air at a higher pressure than the fluidizing air enters through pipe 30 and nozzle 32 which terminates slightly below conduit 52 so that particles are entrained by gas leaving nozzle 32 and enter conduit 52 to be carried up pipe 12 and into a plasma arc device. Fluidizing air assists conveyance by passing into cylindrical skirt 42 and boosting the entraining air at the exit from conduit 52.
Patent GB-708659-A (GB)
Title: Improvements in or relating to photographic flash-light lamps
Inventor: RIZZATTI FRANK JAMES
IPC: G03B15/04
Filed: 1951-08-24
Abstract: 708,659. Photographic flash-light apparatus. HEIDECKE, R. Aug. 24, 1951, No. 20008/51. Class 98(1) [Also in Group XXI] A photographic flash lamp for attachment to a camera has a reflector 1 attached to a battery casing 2 connected to which by a member 8, e.g. a helical spring, is an arm 3 ending in a ring 3a. To the ring 3a is fixed a ring 4 with a bayonet projection 5, a locking spring 6 being preferably provided. The spring 6 engages a recess in the periphery of the ring 3a, when the bayonet mount 5 has been placed in the bayonet socket of a camera, to lock the flash lamp in position. The spring 6 may be replaced by other locking means such as an adjusting screw 7. The bayonet mount 4, 5 may be rotatable, the adjusting screw allowing the flash lamp to be held at any desired angle. The flash lamp is conventionally connected to the flash contact of the camera e.g. by leads and plug.
Patent GB-584027-A (GB)
Title: Improvements in or relating to terminal arrangements for electric resistances
IPC: H01C1/148
Filed: 1944-10-17
Abstract: 584,027. Wire resistances ; direct connections between conductors. STANDARD TELEPHONES & CABLES, Ltd., and GILLIVER, G. Oct. 17, 1944, No. 20052. [Classes 37 and 38 (i)] In the manufacture of a resistance element wound with fine resistance wire, a terminal formed of relatively large diameter wire has secured to it a wire of intermediate diameter, to which the resistance wire is fuse welded.' A cylindrical former 1 has a winding of fine resistance wire 2 having a diameter of 0.0024 inch, for example. A terminal is formed at the end of the former 1 by winding two turns of a thicker wire 3, for example about 0.018 inch in diameter, round the former in a groove. The two ends of the wire 3 are twisted together and form a stiff terminal. A wire 4 of intermediate gauge, for example 0.005 inch in diameter, is twisted up with the ends of the wire 3 and is brought out obliquely at 5. The end of the fine resistance wire 2 is twisted round the wire 4 at 5 and the wires 2, 4 are then fuse welded together forming a bead 6. The ends of the wire 3 and the wire 4 are then fuse welded together forming a bead 7 at the end of the terminal. The beaded end of the wire 4 is then bent round and tucked into the groove beside the turns of the wire 3 as shown. When the former 1 is finally covered with a glaze requiring firing at a high temperature the wires 3, 4 may be of the same material as the resistance wire 2. If no high temperature treatment is employed the wires 3, 4 may be of copper or bronze. Specifications 558,472 and '560,500, [Group XXII], are referred to.