baber/WOPTO huggingface dataset:
Patent GB-271605-A (GB)
Title: Improvements in and relating to triple shoe brake mechanism
IPC: F16D65/14
Filed: 1926-04-01
Abstract: 271,605. Dixon, J., and Daimler Co., Ltd. April 1, 1926. Blocks and shoes acting on drums.-In a brake of the type comprising three shoes hinged to one another the shoes which are capable of slight circumferential movement rest upon a plurality of abutments on a pair of operating-members and the free ends of the terminal shoes are adapted to coact with a fixed part so that in addition to the servo action an outward radial thrust is produced at one or other of the ends according to the direction of rotation of the drum. The shoes n, o, p are expanded by a pair of levers e, f pivoted at w, x operated by a cam g and provided with rollers h, j, s, t engaging the shoes, the arrangement being such that all the shoes are moved outwardly at the same rate and with the same force throughout the whole arc of the shoes. A fixed abutment is provided with oblique surfaces a, b one or other of which is engaged by a corresponding surface on the end of the adjacent shoe n, p when the shoes are engaged with the drum according to the direction of rotation thereof, thus producing an outward radial thrust. The levers e, f are pivoted on a block d capable of slight movement under constraint of a spring v whereby the pivots are rendered self adjusting.
Patent GB-965593-A (GB)
Title: Improvements in smoothing the liquid in a light valve projector
IPC: H04N5/74
Filed: 1962-03-08
Abstract: 965,593. Modulating light. GENERAL ELECTRIC CO. March 8, 1962 [March 10, 1961], No. 8925/62. Heading H4F. In apparatus for modulating light utilizing a deformable liquid medium 20 which is scanned in raster pattern 22 by an electron beam 36 modulated so as to lay down charges that form diffraction patterns, means are provided for increasing the charge density on the liquid at the leading edge 24 of the raster for the purpose of smoothing the liquid. The high charge density causes the majority of the liquid to flow either side of the raster and allows only a thin smooth layer to continue under the raster. In one way of carrying out the invention, the horizontal flyback pulses 70 are differentiated in network 54, 60 and then applied to the grid 42 where the resulting positive-going impulses, which occur at the end of the flyback period, i.e. at the leading edge of the raster, produce an increase in beam current. In another way of carrying out the invention (not illustrated in detail), the electron beam is caused to dwell for a longer period at the leading edge of the raster by distorting the shape of the scanning wave applied from generator 46 to the deflection coils 40 as deflection plates. The liquid 20 is carried by a rotating disc 12, a system for circulating the liquid continuously being provided by means of an outlet 25, 26, pump 28, filter 30 and inlet 32, 31.
Patent GB-1212846-A (GB)
Title: Derivatives of 1-aminoanthraquinone and processes for their manufacture
IPC: C09B1/22
Filed: 1969-02-19
Abstract: 1,212,846. Preparing amino-anthraquinone compounds. CIBA Ltd. 19 Feb., 1969 [20 Feb., 1968], No. 8931/69. Heading C4P. 1 - Aminoanthraquinone - 2 - sulphonic acid or a -2-sulphohalide is reacted with an aldehyde to protect the 1-amino group, nitrated and then treated with a dilute inorganic acid or alkali solution to free the 1-amino group and form 1 - amino - 4 - nitro - anthraquinone - 2 - sulphonic acid. The product may be reduced to the 1,4-diamino compound and then reacted with a cyanide to form 1,4-diamino-anthraquinone-2,3- dinitrile. The process may be carried out without isolation of the intermediate products and in a modification the crude mixture obtained by sulphonation of 1-amino -anthraquinone which contains free 2-sulphonic acid and/or 2-sulphochloride may be used as starting material.
Patent GB-878804-A (GB)
Title: Improvements in or relating to measuring instruments comprising an instrument pointer moving in front of a scale in a transparent liquid
IPC: G01D13/24
Filed: 1959-03-16
Abstract: 878,804. Indicating-apparatus. BURG, K. March 16, 1959 [March 17, 1958], No. 8972/59. Class 106 (4). Indicating-apparatus, in which a pointer 3 moves in front of a scale 4 in a transparent liquid and drives a transparent maximum indicator 6 by means of a stop 5, has a stationary transparent disc 8 arranged between the pointer 3 and the indicator 6 to prevent the liquid current caused by the pointer 3 from influencing the indicator 6. The indicator 6 is mounted on a small transparent disc 7, e.g. of mica, which rests loosely on the smaller face 81 of a stepped disc 8 with a hub portion 9 mounted on the shaft 10 of a resetting knob 14.
Patent GB-794495-A (GB)
Title: Improvements in or relating to the anodising of metal parts of sliding clasp fasteners
Inventor: REYNOLDS THOMAS HANDEL
IPC: C25D11/02
Filed: 1954-03-26
Abstract: 794,495. Anodizing sliding clasp fasteners. ACORN ANODISING CO., Ltd. March 28, 1955 [March 26, 1954], No. 8987/54. Class 41. A method of anodizing metal fastener elements 4 of sliding clasp fasteners 3 in which the fasteners comprise a chain A in the closed condition with continuous electrically conducting flexible elements 5, e.g. wire or tinsel, extending along the beads 2 of the stringers 1 in contact with the elements 4, there being no elements 4 on the stringers at locations between adjacent fasteners 3, comprises inserting an electric contact element 7 between the stringers 1 at the locations to bear on the end faces of the adjacent endmost elements 4 at each end of the location, and immersing the elements 7 with the chain A in an anodizing bath, electrical connection being made to the elements 7. A jig 6 comprising a bar 8, Fig. 5, or an endless belt 16, Fig. 8, is in each case provided with resilient V-shaped aluminium elements 7, e.g. disposed about the bar 8 or in longitudinal parallel rows on the belt 16. A hook 13 enables the bar 8 to be suspended in a tank from a bus-bar. The chain A may be arranged on the bar 8 as shown in Fig. 5, or it may run back and forth lengthwise of the bar. In Fig. 8, the chain A is led through a slotted guide 20 where the elements 7 enter the gaps in the chain, and is carried through an anodizing tank 21 at the exit of which is a member 25 which separates the chain A and belt 16. The chain continues through rinsing and dyeing zones 26, 27, and the belt 16 through a tank 23 for chemically stripping the elements 7 and a washing tank 24. The elements 7 are secured to transverse conducting bars 17 on the belt 16, the electric supply being from a carbon plate 19 over which the belt 16 passes, through the bars 17, elements 7 and chain to a cathode 22 in the tank 21. Alternatively, each element 7 may be mounted on a stud, alternate rows of elements 7 being connected to opposite poles of an A.C. supply as the studs slide over contact plates during their passage.
Patent GB-878195-A (GB)
Title: Improvements in or relating to gas-turbine jet-propulsion engines
Inventor: KEEN JOHN MICHAEL STORER
IPC: F02K1/82
Filed: 1959-03-16
Abstract: 878,195. Gas-turbine jet-propulsion engines. ROLLS-ROYCE Ltd. March 9, 1960 [March 16, 1959], No. 9104/59. Class 110 (3). A gas-turbine jet-propulsion engine has, mounted within the jet pipe, a tubular heat shield spaced from the jet pipe by an annular clearance, a propulsion nozzle mounted at the downstream end of the jet pipe, means for supplying cooling air to the clearance and a tubular heat-insulating member mounted in the clearance so as to divide the cooling air into two portions, one of which flows between the heat-insulating member and the shield to cool the latter and the other flows between the heat-insulating member and the jet pipe and is directed on to, so as to cool, the propulsion nozzle. The invention is described with reference to a gas turbine by-pass jetpropulsion engine having a jet pipe 11 formed of three sections 12, 13, 14. The engine casing 10 has an annular passage 15 to which by-pass air is supplied by the low pressure compressor of the engine. Some of this air passes through hollow struts 16 and is discharged through ports 17 into the path of the turbine exhaust gases. A heat shield 18 is mounted within the jet pipe 11 and encloses reheat combustion equipment. The heat shield 18 is formed of tubular sections 19 to 23, the downstream end of the sections 19 to 22 being mounted within the upstream end of each of the sections 20 to 23 by means of a corrugated annular strip 24. The heat shield may be formed of metal or asbestos, or may be formed of other heatresisting substances arranged in a sheet' metal container. The heat shield is carried by a single strut 25 and at its upstream end slides on an annular member 32 carried by the strut 16. The heat shield is unconnected to the jet pipe at its downstream end and therefore may be slid into position within the jet pipe. An annular heat-insulating blanket 34 is mounted between the heat shield 18 and jet pipe 11. The blanket 34 is carried by constant 35 at its upstream end so that it also may be slid into position within the jet pipe. Cooling air from the by-pass passage 15 flows through the annular clearance 29 and then divided by the blanket 34 into two portions which flow respectively through the clearances 37, 38. The air passing through clearance 38 passes between the corrugations of the strips 24 so as to flow on to, and provide film cooling of, the internal surface of the heat shield. The air flowing through the clearance 37 will be directed through gap 50 on to the inner surface of the nozzle flaps 51. The flaps 51 are actuated by a wedge-shaped member 45 moved axially by pneumatic or hydraulic cylinders 47.
Patent GB-784096-A (GB)
Title: Improvements in or relating to automatic photographic apparatus
IPC: G03B17/53
Filed: 1955-03-29
Abstract: 784,096. Automatic photographic cameras. AUTO-PHOTO CO. March 29, 1955 [March 1, 1955], No. 9127/55. Classes 98(1) and 98(2) An automatic photographic camera includes in combination an elongated film strip carrier shaped to receive a film strip, the carrier having, at least one point, an inner diameter less than the width of the film strip which at that point must assume a concave or trough-like configuration, and a film feed unit to insert the film into the carrier, the feed unit including means to cause said film strip to assume a concave or trough-like configuration during insertion thereof into the film carrier. As shown in Fig. 2, a casing 17 having walls 21, 22, is fixed by flanges 18 to the underside of a support wall 11. An exposed length of photographic film 13 is fed from a camera 14 through a slot in the wall 11 to a shoot formed by the wall 22 of the casing 17 and an inclined wall 24 having side flanges 25 and a vertical lower portion 27 fixed to the side of the casing 17 by flanges 28. Rollers 42, 43 are journalled in the casing 17, and are driven through gearing 51, 52 from an electric motor (not shown). As shown in Fig. 4, roller 42 has a concave periphery into which fits the convex periphery of the roller 43. When the film 13 reaches the rollers, it is bowed by the rollers and moved downwardly, the bowing of the film giving it extra stiffness. The bowed film is fed into a film holder 16 positioned immediately below the rollers, and having a narrow neck 56 wide enough to receive the bowed film, but which grips the film when it is allowed to spring back to its original shape. The casing 16 has openings covered by vanes 54 which, when the film holder 16 is removed to a processing solution, allow circulation of the liquid in the film holder when the holder is moved up and down. Specification 780,707 and U.S.A. Specification 2,541,016 are referred to.
Patent GB-214615-A (GB)
Title: Improved manufacture of rubber articles
IPC: B29D99/00
Filed: 1924-04-10
Abstract: 214,615. Revere Rubber Co., (Assignees of Gibbons, W. A., and Hopkinson, E.). April 17, 1923, [Convention date]. Extrusion machines; moulding indiarubber.- Rubber threads, tapes, tubes, &c. of a minimum thickness of one hundredth of an inch are formed by extrusion of latex into a bath of coagulant from nozzles having the cross-section required for the finished article. Latex is forced from a tank 19 through nozzles 26 below the surface of coagulant in a trough 2. The nozzles are mounted so that their distance below, and inclination to the surface of the coagulant can be varied, the depth generally being greater for large nozzles than for small. The coagulum is drawn through the coagulant at a uniform rate to maintain the thickness of the threads, and to prevent the formation of kinks.
Patent GB-472658-A (GB)
Title: Improvements in or relating to electric discharge lamps
IPC: H01J61/073
Filed: 1936-03-27
Abstract: 472,658. Discharge lamps. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and RYDE, J. W. March 27, 1936, No. 9156. [Class 39 (i)] A high-pressure mercury vapour lamp of the type in which a discharge column of high brightness occurs in an envelope 1 which is everywhere distant from the discharge, comprises two running electrodes 5, 6 of refractory material such as tungsten and two main starting electrodes 7, 8, the relation between the electrodes being such that the main discharge, if it starts between the starting electrodes, transfers itself automatically to the running electrodes at some stage of the run up. The running electrodes must be free from any store of thermionically active material, and at least one of the main starting electrodes must be provided with a store of active material; normally the discharge thus starts between the starting electrodes, although active material sputtered on to the running electrodes may occasionally cause it to start between these electrodes. On D.C., one starting electrode may also be a running electrode, if it is unactivated; on A.C. it is preferable that two separate starting electrodes should both be activated. Transfer of the arc to the running electrodes, which is mainly due to the increased voltage drop, may be assisted by placing the starting electrodes behind or below the running electrodes. The running electrode may form an extension of the starting electrode. In one form the envelope is spherical and the starting electrodes are tungsten spirals enclosing rods of active material and spaced 20 mm. apart, the running electrodes being tungsten wires projecting therefrom and spaced 9 mms. apart. In the form shown, the envelope is pear-shaped with extensions 2 carrying the electrode leads. Platinum coatings 4 are provided on the exhaust pip and behind the electrodes. The running electrodes 5, 6, spaced 4 mms. apart, are small enough to be heated to incandescence and for D.C. the cathode 6 is made smaller than the anode 5. The starting gas is argon at 10 mms. and the mercury filling is slightly unsaturated. Auxiliary ignition electrodes may be provided. Limiting and working values of brightness, volts /cm. and watts/cm. are given. Specifications 392,509, 425,597, 431,923, 434,919, and 444,545 are referred to. The Provisional Specification describes a tubular lamp 30 mms. long and 6 mms. in diameter, with starting and running electrodes at each end, 25 and 20 mms. apart respectively, the working pressure being 20 atmospheres.
Patent GB-199823-A (GB)
Title: Improvements in and relating to apparatus for pickling metallic sheets and the like
IPC: B08B3/10
Filed: 1922-03-30
Abstract: 199,823. McLaughlan, J. March 30, 1922. Pickling.-Metal sheets &c. are pickled in an open-topped tank 1 having a number of perforated pipes 3 lying side by side through which air is directed for agitating the pickling liquid; located in recesses 9 in the side-walls of the tank and transversely above the pipes are cross-bars of glass or pottery ware with rounded upper surfaces, the centre bars 8 being higher than the end bars 7 so that sheets on being pushed to and fro, rock from the higher bars on to the lower. Sheets may be removed in bulk by means of a chain &c. slipped under them as they overhang a cross-bar.
Patent GB-552807-A (GB)
Title: Improvements in carrier-signal frequency-detector systems
IPC: H03D3/10
Filed: 1941-07-22
Abstract: 552,807. Inductors. HAZELTINE CORPORATION. July 22, 1941, No. 9247. Convention date, Aug. 12, 1940. [Class 38 (ii)] [Also in Group XL] A balanced detector for a frequency-modulated system comprises a pair of rectifiers connected to produce in their respective load inpedances voltages of opposite polarity relatively to ground or other point of symmetry, the detected signal being derived from the algebraic sum of the respective voltages. As shown in Fig. 4, the tuned and damped output circuit 37 ... 39 of the I.F. amplifier of a superheterodyne receiver is connected through a condenser 40 to a circuit 41, 42 and through an inductance 43 to a circuit 44, 45 the branches being tuned to frequencies near the upper and lower edges of the frequency range. The rectifiers 29 ... 32 associated with the respective branches are so poled as to produce rectified voltages of opposite polarities at the outer ends of their load resistances 30 ... 33 the inner ends being earthed. The resistances 30, 33 and their shunting capacities are symmetrical about the earth point. Output is taken from the terminals y one of which is earthed and the other connected to the mid-point of resistances 35, 36 so that the output voltages is half the algebraic sum of the voltages at the outer ends. In Fig. 5 the discriminator is of the normal phasing type but with a resistance 51 connected between the earth end of the primary coil 47 and one end of the secondary coil 48. The coils 47, 48 may be arranged as shown in Fig. 8. the coil 48 being bifilar wound, and the coil 47 comprising two oppositely-wound sections energized in parallel and placed on opposite sides of the coil 48. The Specification also describes a frequency discriminator network comprising parallel-tuned circuits coupled magnetically to the coil 37 and tuned above and below the mean frequency, Fig. 1 (not shown).
Patent GB-351481-A (GB)
Title: Improved sifting device with rotary blade wheel
IPC: B07B4/02
Filed: 1930-03-22
Abstract: 351,481. Pneumatic separating. HILDEBRANDT, H., 4, Eichelkampstrasse, Wulfel, Hanover, Germany. March 22, 1930, No. 9251. [Classes 23 and 117.] In a device for grading pulverulent material of the type comprising a rotary wheel 2 with blades 1, Fig. 3, and in which the material is carried in a current of air flowing from the periphery of the wheel to its centre against the centrifugal force, the blades 1 are inclined towards the centre of the wheel in the direction of rotation. The blades may be flat or curved and may be mounted adjustably, and several of the devices may be arranged in series for multiple grading. In the embodiment described, the wheel 2 is mountedon a hub 7, Fig. 1, driven by a shaft 8, and discharges the fine material through the central lateral opening 4. The material may be fed into the casing at the upper end 17 or introduced with the air current at 18, the coarse elements being discharged at 15. Deflectors 21, 22 are provided above and below the wheel to prevent the direct passage of the material thereto. The passage of unseparated material to the opening 4 is prevented by packing rings 12, or vanes 13 in the space between the wheel 2 and the casing 5. The separator may be associated with a grinding mill. Reference ha.s been directed by the Comptroller to Specification 23456/10, [Class 23, Centrifugal machines &c.].
Patent GB-947753-A (GB)
Title: Improvements in or relating to electric storage batteries
IPC: H01M50/204
Filed: 1962-03-09
Abstract: 947,753. Batteries. TUDOR A. B. March 9, 1962 [March 14, 1961], No. 9257/62. Heading H1B. Cells 1, 2, 3 of a battery have equal capacity but differing heights to achieve maximum use of battery space a. The cell container surfaces may be curved as at 4.
Patent GB-275163-A (GB)
IPC: F02N9/04
Filed: 1927-04-04
Abstract: 275,163. Ingersoll-Rand Co., (Assignees of Miller, R.). July 27, 1926, [Convention date]. Starting; stopping.-In a reversible engine started by admitting compressed air from a reservoir S past a valve K ' this valve is opened by pneumatic means when stopping the engine and air compressed by the engine piston B is then expelled through the valve casing H and past a loaded valve Z to the reservoir S. As shown, the engine cylinder A has a head in two parts E, D in which a combustion chamber is formed, the part E being provided with inlet and exhaust valves F and fuel-injection nozzles G. Starting- air is supplied to the casing H of the valve K by a pipe T fitted with a valve U On stopping, the fuel supply to the nozzles F is cut off and the valve K is opened by opening a valve Y admitting air from the reservoir S to the space V behind a piston W on the stem of the valve K. The engine piston then compresses air past the valve Z to the reservoir S, and stopping is facilitated by the partial vacuum formed in the cylinder on the outstroke of the piston.
Patent GB-165537-A (GB)
Title: An improved surgical appliance for opening out or expanding the nostrils
IPC: A61F5/08
Filed: 1920-03-31
Abstract: 165,537. Hill, H. March 31, 1920. Respiration, appliances for promoting; inhalers. - A nostrildilator worn to facilitate breathing, and if desired fitted with a receptacle for a perfume &c. to be inhaled, comprises a spring bow A, the limbs of which are inserted in the nostrils and open apart to hold the appliance in place. The ends of the limbs are formed into or fitted with loops B, each in a plane at an angle to the plane of the bow. The perfume &c. may. be contained in a cup C, Fig. 4, or an absorbent pad may be held in a clip D, Fig. 3.
Patent GB-292448-A (GB)
Title: Improvements relating to the manufacture of sheet glass
IPC: C03B17/06
Filed: 1927-03-11
Abstract: 292,448. Frink, R. L. March 11, 1927. Divided on 291,883. Drawing.-In an apparatus for making sheet glass in a continuous ribbon, molten glass issuing from a tank furnace or other receptacle is carried across a free space to a moving carrier, and the speed of the carrier is automatically coordinated with variations in the rate of flow of the molten glass from the tank. The glass is drawn from a working-chamber 6, Fig. 1, which may be part of the furnace described in Specification 291,883. A horizontal slot 47, Figs. 1 and 2, in the wall 5 of the chamber 6 is fitted with two pivoted lip members 48, 49 which are rotatable, about horizontal axes 48a, 49a between side walls 56. The two members can be moved individually by means of a rack and worm gear, so that their outer ends can be adjusted in relation to the surface level of the glass in the container or to each other. Each of the members is provided with two or more electric heating circuits 53, 54 and the side walls 56 are similarly heated. The surfaces of the members which make contact with the glass preferably made of metal such as nickel or iron alloys, or they may be plated with chromium. The sheet formed by the flow of glass through the slot 47 is received, and carried away by, an endless conveyer 59 consisting of refractory slabs. 60 secured to sprocket, chains 61 and arranged within a heated chamber 58. The guides for the chains 61 are so shaped that a hump is formed in the conveyer, and the sheet is bent first in one direction and then in the other before it travels in a horizontal plane into an annealing chamber. Thus the stretching of the under surface of the sheet, caused by the sag between the slot and the conveyer, is compensated by the reversed curvature when passing over the humps. The sheet. before, it reaches the conveyer, passes between edge rolls 66 carried by an arm pivoted at 67 and arranged to operate a rheostat 70. Any variation in the curvatures of the sheet before it reaches the conveyer causes a variation in the speed of the motor driving the conveyer, and the curvature of the sheet is kept constant.