baber/WOPTO huggingface dataset:
Patent GB-630531-A (GB)
Title: Improvements in or relating to instrument type relays
IPC: H01H53/015
Filed: 1947-08-26
Abstract: 630,531. Electromagnetic relays. SANGAMO WESTON, Ltd. Aug. 26, 1947, No. 23606. Convention date, Sept. 23, 1946. [Class 38(v)] In an instrument-type relay wherein an iron contact 3 is caused to engage a mag-- net contact 4 by variation of current in a moving coil 1, the closure of the contacts 3, 4 controls a relay 12 which not only controls the power circuit 15 but also operates a lever to forcibly separate the contacts 3, 4. In the form shown, decrease of current in the coil 2 causes the closure of contacts 3, 4 and consequent energization of coil 12 the armature 13 of which moves to close the circuit 15 and a maintaining circuit 14 and also operates the lever 7 to separate the contacts. When later on the contact 3 engages the non-magnetic contact 5 the coil 12 is shortcircuited and the armature 13 released. In a modification, the contact 5 is also magnetic and an additional lever is provided to separate the contacts 3. 5 immediately they engage. In this case the contacts 3, 5 are forcibly separated by the attraction of the armature 13 and the contacts 3, 4 are forcibly separated when the armature is released.
Patent GB-948346-A (GB)
Title: Improvements in or relating to waveguide resonant devices
Inventor: SCANLAN MICHAEL JAMES BARTHOLO
IPC: H01P1/28
Filed: 1960-07-06
Abstract: 948,346. Waveguide switches and filters. MARCONI CO. Ltd. April 25, 1961 [July 6, 1960], No. 23620/60. Heading H1W. A waveguide TR switch or filter makes use of a diode of known kind which presents a forward resistance which reduces to a very low value when the voltages exceeds a certain value (see Fig. 1) and which has a capacitance which varies with voltage. When used in a switch, the diode 3 is mounted in a dielectric tube 8 having screw-threaded end caps 6, 7. The inductance of this assembly is tuned out by means of a cruciform iris formed by four co-planar conductive plates 9. The diode acts as a short circuit when the microwave field in the waveguide 1 causes the applied voltage to exceed the value A. In order that a bias may be applied to the diode, one of the electrodes may be capacitatively coupled to the wall of the guide. Two such assemblies may be axially spaced by a quarter-wavelength within the same guide, the electrode connections of the pair being reversed with respect to one another. A filter may be constituted several resonant assemblies arranged to form a series of resonant cavities axially spaced apart by multiples of a quarter-wavelength. The pass.band of the filter may be varied by means of the bias voltage which determines the capacitance of the diodes.
Patent GB-932118-A (GB)
Title: Handle attachment fitting
Inventor: LILLIE ANTHONY ERNEST
IPC: A45C13/26
Filed: 1961-06-30
Abstract: 932,118. Bag handles. STEELS & BUSKS Ltd. May 17, 1962 [June 30, 1961], No. 23650/61. Class 133. The handle 10 of a bag 1 is secured thereto by fittings 4 which are mounted on opposed marginal portions of the bag and have cranked cross-bars 7 receiving the looped ends of the handle. The cross-bars engage in recesses 5 to prevent twisting and the fitting 4 may be made of metal, e.g. brass or a plastics material.
Patent GB-179481-A (GB)
Title: Improvements in adjustable boot trees
IPC: A43D3/14
Filed: 1921-09-06
Abstract: 179,481. Hinder, P. G., and Hinders, Ltd. Sept. 6, 1921. Trees and stretchers .-Relates to toggle-link boot trees of the type having means for adjusting the position of the toggle pivot pin, longitudinally with respect to one of the links; and consists in a toggle-pin comprising two coaxial spring-controlled portions mounted at the inner ends of one link and adapted to be forced outwards by a pivoted wedge lever into spaced holes formed in the sides of the other link. As shown, both links 3, 4 are of U-section. The side members of the link 3 are grooved and provided with spaced holes 14. The link 4 carries coaxial pivot pins 9 at the ends of leaf springs 10. A pivoted wedge member 15 is normally caused by a spring 21 to force the pins apart to engage a selected pair of holes 14. The wedge member 15 is retracted when desired by an operating-button 17, the springs 10 then withdrawing the pins 9 to allow adjustment.
Patent GB-712024-A (GB)
Title: A method and a machine for grinding work-pieces
Inventor: BALSIGER HAROLD EDWARD
IPC: B24B5/28
Filed: 1952-09-23
Abstract: 712,024. Grinding cylindrical surfaces. LANDIS TOOL CO. Sept. 23, 1952, No. 23773/52. Class 60 Rotary movement is imparted to a workpiece 35, Fig. 1, having internal and external cylindrical surfaces, at a surface other than the cylindrical surfaces while the workpiece is supported at a point or along a line of contact on one of the cylindrical surfaces and the other cylindrical surface is subject to the action of a grinding wheel 11. The annular end faces of the workpiece are first ground parallel between the two flat opposed surfaces of a pair of grinding wheels after which . the external or internal cylindrical surface is ground in a conventional manner, e.g. by centreless grinding. One of the end faces of the workpiece is then engaged by a magnetic chuck 30, and if the external surface is to be ground, the internal surface is engaged by peripherally spaced shoes 42, 43 on a spindle 41 slidably mounted under control of a lever 44 in the tailstock of the machine. If the internal surface is to be ground, the previously ground external surface is supported on angularly spaced shoes 50, 51, Fig. 3 while an internal grinding wheel 60 treats the internal surface. A groove may be ground simultaneously by a wheel 11. The workpiece supports are so disposed that the axis of the workpiece is displaced from that of the chuck.' To facilitate movement of the workpieces to and from the grinding position, the support surfaces may be mounted on an arm 80, Fig. 7, pivotally mounted on a shaft 81 and provided with stops 97, 99 which co-operate with fixed stops 98, 100 respectively to locate the arm in the grinding and loading positions. A cam surface 95 displaces the workpiece axially with respect to the support surfaces as the arm 80 is moved downwardly and hence brings the workpiece into flush relationship with the chuck. When the magnets of the latter are of soft-material, they are protected from abrasion by the workpiece by buttons 36, Fig. 1, which protrude beyond the surface of the magnets. The arm 80 may be arranged to actuate a switch to close a circuit to a solenoid operated hydraulic valve which controls a feed cylinder to move the grinding wheel to operative position.
Patent GB-461656-A (GB)
Title: An injector and/or syringe for medical, surgical or veterinary use
IPC: A61M3/00
Filed: 1935-08-24
Abstract: 461,656. Surgical syringes. SHIRREFF, A.F. Aug. 24, 1935, No. 23789. [Class 81 (ii)] A surgical syringe comprises a barrel 3 containing a shortstroke plunger 15 slidable within a second plunger 14 and movable, either with the second plunger for syringing- purposes, or independently thereof to cause the plunger head 17 to eject medicament placed in a nozzle 10. The end of the plunger 14 carries a plate having a lug engaging a groove 18 in the plunger 15, the groove 18 having a helical portion 19 whereby the plungers may be locked together or moved relative to one another. The plunger 14 also has a longitudinal slot widened at one point for the reception of a headed pin on a hinged catch on the barrel 3 ; the pin passes through an aperture in the barrel and when in locking position permits relative longitudinal movement of plunger and barrel but prevents separation thereof. The barrel carries a stop flange 4 having a split sleeve 5 tightened by a quick-pitch screw 6 carrying a lever. An adjustable abutment for positioning the stopflange 4 comprises a ring 8 having a conically threaded skirt 7 tightened by a screw ring 9. The nozzle 10 is connected to the barrel by a bayonet joint and is removable with the aid of a key on the lever of screw 6, engageable with a slot 13a on the nozzle. The Provisional Specification describes a construction wherein a barrel has preferably coaxial openings in the delivery end engaged by projections in a plunger, the movement of which is limited by a set-screw passing through the barrel and engaging a slot in the plunger, the set-screw also adjustably securing a stop-flange on the barrel.
Patent GB-326744-A (GB)
Title: Improvements in feeding mechanism for sewing machines
IPC: D05B27/04
Filed: 1929-08-03
Abstract: 326,744. Union Special-Maschinenfabrik Ges. Oct. 17, 1928, [Convention date]. Circular feed; presser-feet.-In a machine for sewing circular articles such as powder puffs, the article is turned about a fixed centre by an ordinary four-motion feed-dog while held by a circular presser-foot. The presser-foot 5 has a conical underface engaging the work 1 and is mounted in ball bearings 8 on the conical-ended arm 6 of a bracket 11 to allow tilting movements so that the work is always engaged from the centre of the foot to the periphery. The arm 11 is pivoted at 12 to a slide 13 adjustably secured to the bracket 14 of the presser-bar 15 and is held in working position by a spring latch 18. An auxiliary presser-foot 24 holds the overhanging edge of the material while the stitching occurs. The four-motion feed-dog 23 engages the underside of the material and feeds it circularly step-by-step.
Patent GB-603730-A (GB)
Title: Portable photographic enlarging camera and carrier
IPC: G03B27/32
Filed: 1945-09-17
Abstract: 603,730. Photographic enlarging apparatus. WOOD, A. F., and CELESTION, Ltd. Sept. 17, 1945, No. 23980. [Class 98(i)] The apparatus comprises a box B with hinged lid CL carrying on its inside a bracket supporting a column CC on which is slidably mounted a bracket EB carrying the camera EC which can thus be adjusted to and from the floor of the box when the lid is erected into the position of use. The column may be extended upwards by a piece ECL, housed in the box when not in use. To facilitate placing the sensitive copy material on the floor, the front of the box may be hinged to the floor. Stays BB permit the lid to be held at any desired angle to the floor; a clamp CS permits angular adjustment of the column in the bracket CB and also permits the column CC, carrying the camera but not the extension ECL, to be removed from the bracket CB and replaced in inverted position so that images are projected upon a screen above the box ; and the camera may he mounted to swivel in its bracket EB.
Patent GB-1537425-A (GB)
Title: Quarter-squares multipliers for measuring electrical energy
IPC: G01R21/06
Filed: 1977-06-08
Abstract: 1537425 Measuring power L G Z LANDIS & GYR ZUG AG 8 June 1977 [15 June 1976]  23999/77 Heading G1U [Also in Division G4] In a quarter-squares power measuring circuit, Fig. 1, a squaring circuit 5, causes, in a first phase with the switches in the positions shown, a current representing (I u + I i )<SP>2</SP> to flow through a load 10, where I u  and I i  are proportional to the instantaneous voltage and current in the circuit being monitored, and in a second phase with the switches in their other positions a current -(I u  - I i )<SP>2</SP> to flow, whereby the average current through the load 10 represents the product I u I i , which is a measure of the instantaneous power in the circuit. In use, the switching frequency must be higher than the supply frequency. In a modification Fig. 2 (not shown) the squaring circuit (12) produces a pulse train having a frequency proportional to the square of the input voltage, and by means of a reversible counter (15), a pulse train is produced whose average frequency represents the required product.
Patent GB-864631-A (GB)
Title: Adjustable reclining chair
IPC: A47C1/0355
Filed: 1957-07-29
Abstract: 864,631. Reclining chairs. SCHIEPHACKE, F. F. July 29, 1957 [Aug. 16, 1956], No. 24010/57. Class 52(2). In a reclining chair in which the back rest, seat and leg rest are interlinked for relative movement, the leg rest is extended through the medium of a two armed lever 74 pivoted to the seat at 76 and connected with a linkage pivoted to the seat frame. The longer arm of lever 74 is connected to the foot rest 82 by link 80, while the shorter arm is connected by drive link 70 to a guide plate 56, pivoted at 58 to the side frame of the chair. A link 88 is connected between the drive link 70 and a link 92 pivoted to the foot rest and to the longer arm of lever 74. Pivoted at 50 to the seat and at 54 to the guide plate 56 is a control link 52 having a projection 53 designed to contact an inward extension of the pivot 58. The guide plate is biased against a stop 59 in the side frame of the chair by a spring 62. A second stop 59a is provided. In use, the rearward motion of the tilting back rest is transmitted to the seat and to the control link 52 which turns about the pivot 54 towards the stop on pivot 58. The guide plate is held against the stop 59 by spring 62 and the motion of the seat against the stationary drive link 70 causes a partial extension of the leg rest. At an intermediate position of the back rest the extension 53 on control link 52 abuts the stop on pivot 58 and further movement of the back rest causes the link 52 to move the guide plate 56 about pivot 58 against the action of spring 62 until stop 59a is reached. This causes the full extension of leg rest 82.
Patent GB-258735-A (GB)
Title: Improvements in flue and chimney sweeping brushes
IPC: F23J3/02
Filed: 1925-09-26
Abstract: 258,735. Roll, R. B., and Gunnill, E. Sept. 26, 1925. Cleaning internally, rotary appliances for.-A flue and chimney sweeping brush comprises a flexible steel &c. handle A with a fork B at one end carrying a transverse pin E upon which a cylindrical brush C is loosely mounted, so as to be capable of eccentric rotation between freely-mounted discs F, F'. The arrangement is such that the discs F, F<1> contact with and roll along the surface to be cleaned, while the brush C rotates eccentrically in contact with the surface. A rubber &c. disc H or a sleeve &c. is mounted on the rod A and can be reciprocated to clean the rod. The rod may be in sections jointed together.
Patent GB-661086-A (GB)
Title: Improvements relating to methods of, and apparatus for, treating textile and like materials
Inventor: HANNAY ROBERT STEWART ERSKINE
Filed: 1947-08-30
Abstract: Textile materials are subjected to heat treatment in dyeing, bleaching, scouring, developing and like processes by passing them through a bath of molten metal and through a treating liquor which is floating on the surface of the molten metal at the exit side of the bath where the material leaves the latter.  The treating liquor reduces the tendency of the material to pick up scum from the molten metal, and may be neutral or may be of a character to assist or complete the dyeing or other treatment being carried out in the metal bath or in any subsequent treatment.  When dyeing with direct dyestuffs the exit liquor may contain common salt, Glauber salt or formic or acetic acid.  When dyeing with vat or sulphur dyes the liquor may contain common salt or Glauber salt and should not be made acidic.
Patent GB-940280-A (GB)
Title: Improved machine for sowing seed and fertiliser
IPC: A01C7/14
Filed: 1961-07-04
Abstract: 940,280. Seed sowing machines. SPEMBLY Ltd., and D. M. CARGILL. Sept. 21, 1962 [July 4, 1961], No. 24031/61. Heading A1D. A seed sowing machine comprises a seed hopper 10 provided with a number of transverse partitions 16 for dividing the hopper into a number of separate compartments and seed selecting wheels 20 in each compartment mounted on a shaft 19 which is parallel with the line of advance of the machine. Seed is picked up by cups on the wheels and deposited in tubes 30 so that a length of seed is deposited simultaneously by one cup of each wheel, the length corresponding to the distance that the machine travels between successive depositions. The hopper 10 is mounted on a frame provided with a rear wheel 14 and a front wheel 4 which drives the shaft 19 through bevel gears 9 and chain and sprocket gearing 6. Controls 31, 32, 33 for opening and closing a furrow are mounted on the frame. Specification 750,798 is referred to.
Patent GB-839978-A (GB)
Title: Improvements relating to counting apparatus
Inventor: MONEYPENNY HAROLD KENNETH
IPC: G06M1/08
Filed: 1955-08-22
Abstract: 839,978. Counting-apparatus. G. K. N. GROUP SERVICES Ltd. Aug. 22, 1956 [Aug. 22, 1955], No. 24108/55. Class 106 (1). Events to be counted activate a detector device to discharge a condenser, the subsequent recharging pulses actuating a counter. As described, electrically conductive articles pass through a counting station where they impinge on a detector device comprising a wire probe or brush thereby momentarily completing a circuit at D, Fig. 1, to effect substantially complete discharge of a condenser C1, the discharge circuit having a low resistance. The condenser C1 is then recharged from a battery B, the recharging pulse actuating a counter CR preferably of the kind described in Specification 740,813 and inhibiting miscounts due to spurious multiple closures of the circuit at D. In a modification, Fig. 2, discharge of the condenser C1 results in the charge of a condenser C2 being shared between C1 and C2 the sharing operation effecting actuation of the counter CR and the final voltage on the condenser C2 being insufficient to actuate the counter CR should the condenser C1 be discharged by a spurious completion of the circuit at D occurring before the condenser C2, whose recharging time is determined by the value of a resistor R1 is recharged. The battery B may be replaced by a rectified A.C. voltage. For counting electrically non-conductive articles the detector device may comprise two or more flexible wires or probes normally spaced apart but brought into contact by the passage of an article.
Patent GB-1016109-A (GB)
Title: Liquid level sensing device
IPC: G01F23/36
Filed: 1963-06-17
Abstract: 1,016,109. Float actuated switches. J. D. PHIPPS. June 17, 1963, No. 24109/63. Heading H2B. In a liquid level device, particularly applicable for warning when the level of the bilge water in a boat rises, two parallel-connected float-operated switches are enclosed in a perforated casing 20, Fig. 1 (not shown). Each switch comprises a float 38 and tube 40 containing mercury 54 which closes contacts 50, 51 in a circuit to an audible warning device when the float rises, the float and tube being pivotally mounted on a rod 46. The casing 20, float 38 and tube 40 may be made of transparent plastics materials to facilitate inspection.
Patent GB-220488-A (GB)
Title: Improvements in or relating to thermionic valve couplings
IPC: H03H7/01
Filed: 1923-09-28
Abstract: 220,488. Lloyd, H., Homer, E. B., and Dilger, A. Sept. 28, 1923. Thermionic amplifiers and detectors.-A resistance inter-valve coupling for a three-valve detector and amplifier comprises a resistance 10 of about 5 megohms in the plate circuit, of the first valve 1 a grid leak 14 of about 20 megohms and a plate resistance 11 of about 3 megohms for the second valve 2 and a grid leak 15 of 10-15 megohms for the third valve 3, which has the telephones 18 or a loud speaker in its plate circuit. The input condenser 17 and the inter-valve condensers 6, 9 are of 0.0003 microfarad capacity. The first valve acts as a detector and amplifier and the other valves as amplifiers only. It is stated that the valves 1, 2 function below the lower bend of their characteristic curves. The high tension battery 12 may be of 60-100 volts, and the grid leaks 14, 15 are connected to the negative side of the filament battery 13. Specification 129,313 is referred to.
Patent GB-1271498-A (GB)
Title: Oxidation of alcohols
Inventor: NICKLIN THOMAS
IPC: C07C45/38
Filed: 1968-05-21
Abstract: 1,271,498. Oxidation catalysts. GAS COUNCIL. 21 Aug., 1969 [21 May, 1968], No. 24166/68. Heading B1E. [Also in Division C2] A catalyst for use in the preparation of an aldehyde by oxidation of the corresponding alcohol comprises molybdenum in oxide form, uranium in oxide form and, optionally, carrier material selected from alpha-alumina, gammaalumina, silica, natural clays, molecular sieves, silicon carbide, zirconium silicates and mixtures comprising alumina and silica, for example 80 Al 2 O 3 /20 SiO 2 . The catalyst may contain from 0.2 to 1.8 parts by weight of uranium, calculated as metal, per part by weight of molybdenum, calculated as metal; when the catalyst comprises carrier material, molybdenum and uranium may constitute from 3 to 25 weight per cent, calculated as metals, of the catalyst. As exemplified, a catalyst having a surface area of 1.14 m<SP>2</SP>/g and containing 7.01 weight per cent molybdenum (calculated as metal) and 4.54 weight per cent uranium (calculated as metal) is prepared by adding spheroids of high porosity alumina having a diameter of from 3 to 5mm and a surface area of 1.21 m<SP>2</SP>/g to a solution obtained by adding uranyl nitrate to a solution containing ammonium paramolybdate and citric acid, the resulting impregnated alumina being boiled and thereafter calcined at 540‹C; a comparative catalyst having a surface area of 1.0 m<SP>2</SP>/g and containing 8.35 weight per cent molybdenum (calculated as metal) is prepared in similar manner but omitting uranyl nitrate from the impregnation solution. Reference is made to the use of nitric acid, tartaric acid and malic acid (but not acetic acid and oxalic acid) in the preparation of the impregnating solution.
Patent GB-1430708-A (GB)
Title: Clutch release bearings for motor vehicles
IPC: F16D23/14
Filed: 1974-05-31
Abstract: 1430708 Clutch release bearings; friction clutches SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 31 May 1974 [1 June 1973] 24180/74 Headings F2L and F2C In a friction clutch having a diaphragm spring 2 a clutch release bearing 6 having sheet metal outer and inner races, 8, 10, engages spring 2 through a flange 13 of the outer race 8 and is secured to the spring 2 by a ring member 15 which engages the opposite side of spring 2 from flange 13. The member 15 (Fig. 2) has a slotted frustoconical portion 16, fingers 17 formed by slots 18 allowing the portion 16 to be compressed radially inwards when the bearing is to be mounted on the spring 2, the fingers 17 spring- ing back out to holding the bearing 6 on the spring. Projections 19 which engage recesses of the spring 2 hold the race 8 against rotation relative to the spring.