baber/WOPTO huggingface dataset:
Patent GB-736985-A (GB)
Title: Improvements in electric control circuits
IPC: G05B6/02
Filed: 1952-11-26
Abstract: 736,985. Automatic control systems. GENERAL ELECTRIC CO. Nov. 26, 1952 [Nov. 27, 1951], No. 29958/52. Class 38 (4). Variations of a direct voltage 5a, Fig. 2, e.g. a signal voltage in a servo system, are applied to a control winding 5 of a magnetic amplifier 2 and a corresponding direct current is supplied to a load 15, e.g. a motor field winding, from A.C. windings 3, 4 through a bridge rectifier 7. A heater 16, which may be in series or parallel with load 15, controls the voltage produced by a thermocouple 17 and applied to a magnetic amplifier control winding 6 which may be arranged to produce positive or negative feedback. The delay in the feedback channel is selected by choice of heater thermal capacity, or the material or distance between heater and thermocouple. A second thermocouple 18 at a greater distance from heater 16 is arranged to reduce the feedback to zero after a further delay period. Use of a single control winding for the magnetic amplifier is referred to. In Fig. 1 (not shown) thermocouple 18 is omitted. In Fig. 3 (not shown) the feedback voltage is developed by unbalance of a bridge circuit, one or more temperature-variable resistors in which are varied by the heater.
Patent GB-809856-A (GB)
Title: Improvements in or relating to control valves
Inventor: TATE BERNARD
IPC: F16K17/12
Filed: 1955-10-20
Abstract: 809,856. Valves. LODGE-COTTRELL Ltd. Nov. 1, 1956 [Oct. 20, 1955], No. 30054/55. Class 135. A valve which is capable of acting as a safety valve and also as a bleed valve for a pressure chamber comprises a valve member such as the disc 62 connected to a balance arm 11 pivoted intermediate its ends and a weight 34 movable to any desired point along the balance arm. When located at one side of the balance arm pivot shaft 16, the weight tends to hold the valve member on its seat 61 whereby the valve acts as a safety valve and when located on the opposite side of the shaft 16, it rocks the balance arm to cause the valve to open and operate as a bleed valve. The balance arm comprises parallel beams 13 joined by webs 14, 15. The beams carry pairs of pillars 23, 25 joined by webs 26, 27 and supporting pairs of bosses 29, 31 in which guide rails 33 for the weight 34 are mounted. The bosses 29, 31 also form supports for pillars 48, 49 to which a cover-plate 47 is bolted. The weight 34 is adjusted by a chain 44 connected at both ends to the weight and passing over fixed and adjustable guide rollers 41, 40 at the ends of the beam, over further guide rollers 38, 39 and under a sprocket wheel 35 on the shaft 16. The shaft 16 is adjusted by a chain wheel in a casing secured to an annular plate 21 and to the pressure chamber. The chain wheel is operated through a chain passing down through the casing to means responsive to conditions in the pressure chamber. The valve disc 62 is guided in a spider 64 and its stem is pivoted on a shaft 66 movable in elongated slots 67 in the balance arm.
Patent GB-418937-A (GB)
Title: Improvements in and relating to strip index devices
IPC: B42F17/00
Filed: 1933-10-30
Abstract: 418,937. Indicator boards for displaying variable information. MANN, A., and COPELAND-CHATTERSON CO., Ltd., Cope- Chat Works, Dudbridge, near Stroud, Gloucestershire. Oct. 30, 1933, No. 30113. [Class 118 (i).] A panel having end flanges b for holding strip index members d in position is provided also with one or more intermediate flange members e adapted to engage tongues d<1> on the strips to prevent them bulging at the centre. Each strip may be enclosed in a flat celluloid tube f, in which case the tongue d<1> may be formed on the tubes.
Patent GB-1383674-A (GB)
Title: Amusement equipment
IPC: A63G11/00
Filed: 1972-06-28
Abstract: 1383674 Amusement and sports apparatus P W ALMOND 28 June 1973 [28 June 1972] 30198/72 Headings A6D and A6M [Also in Division El] Equipment for use as a swing, see-saw goal posts or framework for a tent comprises two sub-frames (Fig. 2) each being generally triangular and having a median rod 2 about which the two halves are foldable relative to one another from the open position shown to a closed position in which one half lies within the other (Fig. 3, not shown), and seating means. The two sub-frames are connectable base to base when braced in a part folded condition with the two median rods 2 in extension of one another (Fig. 5) to form the frame of asee-saw, a seat 16 then being mounted on the apex 3 of each sub-frame and the see-saw pivoting about the line joining the lateral extremities of the bases. Support pads 20 may be provided. Alternatively the two sub-frames may also be connected by cross bar 8 (Fig. 1) the sub-frames being upright and standing on their bases which are then parallel, to form the frame of a swing, the seat 16 then being suspended from the bar 8. The seat 16 comprises two halves fixed together which can be taken apart and used as the two seats of the see-saw. The sub-frames in their folded state can also be used as goal posts and they can also be used to form the frame of a wig-wam tent or a frame tent.
Patent GB-1049970-A (GB)
Title: Improvements in thread-rolling dies
IPC: B21H3/02
Filed: 1963-04-11
Abstract: 1,049,970. Rolling threads; making screws. RESEARCH ENGINEERING & MANUFACTURING Inc. April 11, 1963 [April 16, 1962], No. 30201/66. Divided out of 1,022,355. Headings B3A and B3M. The Specification contains the same subjectmatter as Specification 1,022,355, but the claims are directed to thread rolling dies as opposed to a method of making a self-tapping screw.
Patent GB-208863-A (GB)
Title: Improvements in or connected with friction clutches and the like
IPC: F16D43/18
Filed: 1922-11-07
Abstract: 208,863. Spence, W. L. Nov. 7, 1922. Clutches, friction. - In centrifugal clutches lead or other blocks C loosely carried in a driving- spider B are made of triangular shape with curved sides conformable to the driven drum E with which they contact, so that they may be turned to bring any one of their three wearing faces outwards. The pockets of the member B are also curved to fit the blocks, and exercise a wedging-effect thereon during drive. In a modification, lenticular blocks with two wearing faces are employed. The blocks C are faced with or surrounded by friction material D, which may be coiled on and clamped to them, or they may comprises laminations interleaved with friction material. The material may be in cord or strip form, and may comprise woven cotton, asbestos, &c. with metal wires, but preferably is made of lengths of suitably impregnated fire hose of standard sizes, into which the blocks are inserted. The triangular blocks are preferably six or more in number, and the lenticular blocks five or more. Lateral plates keep the parts in place. The shape of the blocks conduces to a light spider, large contact surfaces, and a long radius to their centres of gravity.
Patent GB-635746-A (GB)
Title: Improvements in or relating to ceramic dielectrics comprising essentially titania
IPC: C04B35/46
Filed: 1947-11-17
Abstract: A ceramic dielectric comprises titania, not more than 15 per cent nickel oxide, and optionally magnesia and/or calcium, strontium or barium oxides; there may also be present zirconia and/or thoria not exceeding 15 per cent of either or both together.  The ingredients are wet mixed, milled with water, dried, crushed, mixed with, say, flour plaste, shaped, dried and fired at, say, 1400 DEG  C.  The nickel, magnesium and alkaline earth oxides may be replaced by, for example, carbonates, or some or all of the ingredients may be preformed from oxides, e.g. nickel zirconate, magnesium or alkaline earth titanate or zirconate may be employed.  Tables are given indicating properties of various dielectrics produced in accordance with the invention.ALSO:A ceramic dielectric comprises titania, not more than 15 per cent nickel oxide, and optionally magnesia and/or calcium, strontium or barium oxides; there may also be present zirconia and/or thoria not exceeding 15 per cent of either or both together.  The ingredients are wet mixed, milled with water, dried, crushed, mixed with, say, flour paste, shaped, dried and fired at, say, 1400 DEG  C.  The nickel, magnesium and alkaline earth oxides may be replaced by, for example, carbonates, or some or all of the ingredients may be preformed from oxides, e.g. nickel zirconate, magnesium or alkaline earth titanate or zirconate may be employed. Tables are given indicating properties of various dielectrics produced in accordance with the invention.
Patent GB-448983-A (GB)
Title: Improvements in undercarriages for aircraft
IPC: F01L13/02
Filed: 1935-11-04
Abstract: 448,983. Retractable undercarriages for aircraft. PORSCHE GES., DR. ING. H.C. F., 24, Kronenstrasse, Stuttgart, Germany. Nov. 4, 1935, Nos. 30483 and 30484. Convention dates, Nov. 2, 1934 and Nov. 3, 1934. [Class 4] An aircraft undercarriage employing torsion springs is adapted to be retracted without increasing the tension of the torsion springs. In one form, Fig. 1, wheel 1 is carried by a member 2 connected to the aeroplane body by parallel motion links 3, 4 of which the link 4 is secured to one end of a longitudinally disposed torsion tube 7. The after end of tube. 7 is journalled in a fixed part of the body and carries a lever 9, Fig. 2, linked by a connecting rod 12 to a crank 11 rotatable by worm gearing under the pilot's control. Retraction of wheel 1 is effected by rotating crank 11, the arrangement being such that in both the retracted and extended positions of the device crank 11 is at a dead centre position with respect to connecting rod 12. A similar arrangement is described in which wheel 1 is carried by parallel motion links arranged in a fore-and-aft plane, to torsion rods in this form extending transversely within the wings. In a modified arrangement, Figs. 5 and 6, wheel 1 is carried by a rocking lever 3a pivotally mounted intermediate its length on a laterally swingable arm 22, the pivot mounting comprising a friction damper 21. Lever 3a is connected by a link 12 and a ball joint 23 to a lever 11a secured to a torsion tube 7. Arm 22 is rotated for retraction of wheel 1 by means of a shaft 22a and worm gearing controlled by the pilot. Ball joint 23 is disposed coaxially with shaft 22a so that retraction of wheel 1 does not impose any stress on the torsion rod. As shown, rod 7 and rocking lever 3a are disposed parallel to the plane of symmetry of the craft but such arrangement is not essential and either member may be set at an angle to the fore-and-aft axis provided that the position of ball joint 23 with respect to the swinging axis of arm 22 is not affected. According to a further modification, wheel 1 is arranged to swing inwardly instead of outwardly as shown in Fig. 4, so as to house the wheel supporting members within the underside of the aeroplane body. Torsion rod 7 is in this case mounted substantially above the swinging axis of arm 22 and within the aeroplane body.
Patent GB-912002-A (GB)
Title: Porous sintered metal friction element
IPC: C22C33/02
Filed: 1961-08-24
Abstract: The sintered porous friction element disclosed in the parent Specification is modified by the addition to the powder mixture of an iron-aluminium alloy powder consisting of 30% to 70% by weight aluminium and the balance iron so that the mixture contains 2.2% to 22.5% by weight of aluminium.  The powder mixture comprising a ferrous base metal, 20% to 32% graphite and 2.2% to 22.5% aluminium is briquetted at 6,000 p.s.i. and sintered under non-oxidising conditions at 1800 DEG  F.  Copper, bismuth and lead powder are also present in the powder mixture.
Patent GB-1192573-A (GB)
Title: A Synthetic Aggregate Material and a process for producing same
Inventor: KROYER KARL KRISTIAN KOBS
IPC: C04B18/02
Filed: 1967-07-03
Abstract: 1,192,573. Bituminous compositions. K. K. K. KROYER. 3 July, 1967 [6 July, 1966], No. 30563/67. Heading C3N. [Also in Division C1] An aggregate for use in road surfaces bonded by, e.g., asphalt, consists of nodules of small particles of devitrified glass, set cement and pigment. The preferred ratio of glass to cement is 2 to 1, and the pigment amounts to 2 to 10% of the cement.
Patent GB-1111294-A (GB)
Title: A device for supporting a body
IPC: F16M11/04
Filed: 1965-07-19
Abstract: 1,111,294. Supporting diathermy electrodes. SIEMENS-REINIGER-WERKE A.G. 19 July, 1965 [18 July, 1964], No. 30675/65. Heading A5R. [Also in Division A4] A support arm assembly for diathermy electrodes comprises a parallelogram arm 2, having a weight compensating spring 9, pivoted on a housing 1 about horizontal and vertical axes 7, 8, 4 and articulated through a double joint angle piece 20, permitting pivoting about horizontal and vertical axes 19, 2], to a second arm 22 which is bent at right angles and supports an electrode 35 at its free end. The parallelogram arm comprises a tube 5 and a strut 6 inside the tube, the tube and strut being pivotal about horizontal axes 7, 8 respectively on an angle piece 3 which is pivotal about a vertical axis 4 relative to the housing. The other ends of the tube and strut are pivotally connected to an element 16 on which the angle piece 20 is pivotal about a vertical axis 19. One portion of the second arm 22 is pivotal about a horizontal shaft 23 on the angle piece 20 and the other portion is connected to the electrode 35 through connecting pieces 31, 32 which permits pivotal adjustment about mutually perpendicular axes 33, 34. The spring 9 is arranged on the strut 6 and connected between the strut and the tube. The strut is frictionally slidable in a clip 13 secured to the tube, the frictional effect of the clip being adjustable by a screw 14 to vary the compensation of the spring 9 for electrodes of differing weights. The second arm is secured in adjusted position by the engagement of a manually releasable spring-urged lever (27,. Figure 3) on the arm in one of a series of detents (25) in the shaft 23.
Patent GB-794801-A (GB)
Title: Improvements in apparatus for purifying steam
IPC: B01D45/08
Filed: 1956-10-10
Abstract: 794,801. Contacting gases with liquids. BABCOCK & WILCOX, Ltd. Oct. 10, 1956 [Oct. 19, 1955], No. 30880/56. Class 55 (2). [Also in Group XIII] A device 20 for washing impurities, particularly silica vapour, from high-pressure steam is located in the steam space 14 of the boiler steam and water drum 10 which is fitted internally with compartments 15 receiving the steam-water mixture from the boiler riser tubes and cyclone separators 12, for example of the form described in Specification 562,793, [Group XIII], for separating the steam from the water, the device consisting of a box-like structure formed of plates 21 which depend from the top of the drum and hold between them a pair of horizontallydisposed, vertically-spaced, upper and lower perforated trays 23, 24. Between the trays and spaced therefrom by one-edge strips of stainless steel is a compacted mass 25 of stainless steel wire mesh. Wash water of high purity is delivered to the upper tray 23 through a supply pipe 28 and branch pipes 30 each having a downwardly-directed spray nozzle head 31. A corrugated plate scrubber 35 is spaced above the tray 23 below a perforated distributer 36 adjacent the steam outlet 11. In operation, the steam leaves the separators 12 through superposed corrugated plate scrubbers 17 and is deflected by a baffle plate 22 into the washing device 20. Therein it passes at high velocity through the water collecting on the tray 24 to produce atomization thereof, flows through the mass 25 and atomizes the water on the tray 23, most of the silica vapour in the steam being absorbed in the wash water. Any entrained water droplets are removed in the scrubber 35.
Patent GB-255303-A (GB)
Title: Improvements in or relating to propelling pencils
IPC: B43K21/08
Filed: 1925-12-07
Abstract: 255,303. Alland, M. Dec. 7, 1925. Self-filling reservoir pens combined with pencil holders. -In a combined fountain pen and pencil holder, the fountain pen is provided with a self-filling plunger actuated by a hollow shaft containing the lead-propelling mechanism. The operating-shaft 34 of the plunger 8 of the fountain pen is connected to a head 16 screwing on the barrel closure member 14. A tip 6 is rotatably mounted on the reduced front end of the head 16 by means of a resilient ring 21 engaging complementary grooves in the two parts. A tubular member 26, formed with internal spiral ribs at the rear end, is secured to the tip and serves for the propulsion of the lead-carrier 29 which is provided with a spiral groove for engagement with the ribs on the member 26, and with a lug 32 engaging a longitudinal slot in the shaft 34. The leadcarrier is provided at its front end with a reduced portion having a tapered bore for receiving the lead. A rod 13 is fixed in the plunger 8 so that a lead may be pushed out of the carrier when the latter is retracted. A cap carrying a reserve supply of leads and an eraser is provided.
Patent GB-623576-A (GB)
Title: Improvements in or relating to apparatus for controlling the supply of electric current to the heating element of an electrically heated device
IPC: H05B1/02
Filed: 1946-10-17
Abstract: 623,576. Thermal switches. THERMEGA, Ltd., and SINGLETON, S. A. Oct. 17, 1946, No. 30956. [Class 38(v)] The temperature of an electricallyheated device, such as a blanket, is controlled by regulating the length of the " on " and " off " periods of a thermal switch, by means of a variable resistance 5 in parallel with the heater 1 for the bimetal 3 of the switch. Specifications 585,590 and 587,111 are referred to.
Patent GB-1414902-A (GB)
Title: Filters
IPC: B01D35/147
Filed: 1973-06-29
Abstract: 1414902 Filter SPERRY RAND CORP 29 June 1973 [9 Aug 1972] 31022/73 Heading BID A filter housing comprises a head 10 to which is demountably secured a bowl 20 enclosing filter element 28, and inlet 16 is separated from outlet 18 by a removable sleeve 32 which has an aperture sealed to the outlet at 40, a frusto-conical extension 30 sealed to the filter element and a by-pass valve 44 located in an aperture adjacent inlet 16. Sleeve 32 has two flanges (34), which are screwed to head 10, and two flat walls incorporating outlet 40 and valve 44. Incoming hydraulic power fluid passes from inlet 16 around the sleeve 32 and down between the sleeve and bowl 20, then inwards through element 28. A peripheral spring 22 secures the bowl 20 in head 10 by engaging in matching grooves therein. The position of valve 44 is transmitted by a pin (60), extending from disc 58 into slot 62, to a rotary indicator 54 visible through windows in cap 50.
Patent GB-1320615-A (GB)
Title: Intaglio printing
IPC: B41M3/14
Filed: 1971-07-02
Abstract: 1320615 Printing processes and apparatus JAPAN MINISTRY OF FINANCE PRINTING BUREAU 2 July 1971 [3 July 1970] 31023/71 Heading B6C  A printing plate 1 for printing bank-notes, postage stamps, securities, etc., so that forgery is difficult, has the known gravure printing surface with its ink-receiving cells 2 of varying depths, and in addition a number of intaglio lines 3 which may vary in depth engraved thereon. In use, the plate is attached to a printing cylinder 4 and inks of different colours are supplied thereto by rollers 5, 6, 7 which have relief patterns thereon, so that each roller inks a different part of the plate. A wiping roller 8 removes surplus ink from the non-image area of the plate. Ink of high viscosity, as used in intaglio printing, preferably is employed.
Patent GB-891805-A (GB)
Title: Manufacture of combustible gas
Inventor: HAWES JACK MALCOLM
IPC: C01B3/46
Filed: 1959-09-11
Abstract: 891,805. Making combustible gas. HUMPHREYS & GLASGOW Ltd. July 28, 1960 [Sept. 11, 1959], No. 31075/59. Class 55 (2). In a cyclic process of the kind comprising gas-making phases in which gas-making hydrocarbons (e.g. natural gas), and gasification medium, such as steam, are passed into a hot bed 2 of catalyst (of e.g. nickel), to produce combustible gas and heating phases in which heating gases comprising hot gaseous combustion products are passed through the bed 2 to heat it up, the heating phases being alternated with the gas-making phases, and in which sensible heat is recovered by heat storage material from gases leaving the bed 2 to subsequently preheat gases passing to the bed 2, the gaseous flow through the bed 2 is always in one and the same direction for heating phases whereas natural gas and steam are passed into the bed 2 from one direction for part of each gas-making phase and from the opposite direction for another part of it. In the example given, for the first part of each gas-making phase steam and natural gas are passed through inlets 6, 7 upwards into the heated bed 2, i.e. in the same direction as the gases when heating, both being unheated, or the steam and, if desired, the natural gas may be preheated by passing through the regenerator 4. During that part of the gas-making phases in which gas and steam are passed into the bed 2 in the opposite direction, the steam and, if desired, the gas is preheated by passage through inlet 9 into regenerator 3 before passing to the bed 2, and sensible heat is recovered from the combustible gas which leaves through a conduit 12 to pass into the regenerator 4, by passing through which during heating phases air from inlet 14 is preheated before mixing with gaseous combustion products from a chamber 5 to pass to the bed 2, sensible heat being recovered from the gases which leave by passing them through the regenerator 3, which may be additionally heated by burning further fuel at the top at this time.
Patent GB-977644-A (GB)
Title: Electro-plating apparatus
Inventor: WARNE MICHAEL ANTHONY
IPC: C25D17/10
Filed: 1962-08-14
Abstract: <PICT:0977644/C6-C7/1> An anode basket to contain fragments of metal for plating consists of a foraminate titanium body enclosed in a filter bag with means for drawing the filter bag tightly around the titanium basket. This may be a tube of circular, oval, or rectangular cross-section, the bottom end being closed by welding the flattened edges together, and providing a plastic cap, or by welding on a titanium cup. The surrounding filter bag 12 is of fine weave textile material, e.g. polypropylene, the cut longitudinal edges of which are formed into an inverted box pleat 14, 17, having holes 20 at the edges through which a lace 21 is threaded to draw the lips of the pleat tightly together.  The bottom has a double row of stitching 19 and is heat-sealed.
Patent GB-871447-A (GB)
Title: Improvements in or relating to devices for securing the pedal-crank on the crank axle of a bicycle and the like
IPC: B62M3/00
Filed: 1959-09-14
Abstract: 871,447. Securing bicycle cranks on shafts. NAVET, G. Sept. 14, 1959 [Jan. 3, 1959], No. 31212/59. Class 80 (2). In order to secure a bicycle crank or like member 4 to a spindle 2 the end 1 of the latter is formed with a flat 3 and engages a correspondingly shaped opening in the member 4 which is locked in position by a transverse bolt 6, rotation of which tightens the appropriately shaped adjacent ends 10 of clamps 8, 9 on the curved surface of the spindle opposite the flat portion 3. The arrangement permits limited axial adjustment of the member 4, but if this feature is not essential the bolt may engage a groove in the spindle.
Patent GB-292490-A (GB)
Title: Improved appliances for playing an indoor game
IPC: A63F9/00
Filed: 1927-11-21
Abstract: 292,490. St³ndt, J. W. June 4, 1927, [Convention date]. Board games.-Relates to appliances for playing a game of the kind in which discs a are assembled on rods b removably attached to base plates c, and consists in the provision of a plurality of sets of discs, the sets being of different colour and the discs in each set being of varying diameter and of the same colour as the corresponding base plate. An additional or neutral base plate is provided. Players manipulate the discs according to throws nf a die, with the object of assembling a set of discs in correct order on the corresponding base plate. Four of the six faces of the die are marked with numerals and the remaining two with a black and a white penalty dot respectively.