baber/WOPTO huggingface dataset:
Patent GB-484239-A (GB)
Title: Improvements relating to valves for controlling fluids
IPC: F16K5/22
Filed: 1937-01-28
Abstract: 484,239. Lubricating valves. AUDLEY ENGINEERING CO., Ltd., and LEACH, R. W. Jan. 28, 1937, No. 2487. [Class 12 (iii)] A lubricating device for a valve having a rotary closure member b comprises a piston chamber m from which lubricant or plastic substance is supplied under pressure to the working surfaces of the valve, and a storage chamber q for replenishing the piston chamber and located adjacent to and being of about the same capacity as the piston chamber. As shown, the lubricant in the chamber m is placed under pressure by a piston f subjected to spring action and to the action of the fluid controlled by the valve. The storage chamber q has a screwed plunger r for ejecting the lubricant through a non-return valve s to the piston chamber m. The latter has a relief valve u. The piston and storage chambers may be formed as a fitting separate from the valve.
Patent GB-1160791-A (GB)
Title: Crystalline Polymers and their Production
IPC: C08F8/00
Filed: 1967-01-17
Abstract: 1,160,791. Treating polypropylene filaments. REXALL DRUG & CHEMICAL CO. 17 Jan., 1967 [18 Jan., 1966], No. 2547/67. Heading B5B. [Also in Division C3] Crystalline block copolymers comprising a propylene polymer block and a polymer block of certain functionally substituted ethylenically unsaturated compounds are melt spun into monofilaments, optionally treated with propylenimine and dyed and the fastness of the dye tested. In the examples 5 mil. diameter monofilaments are formed and dyed using "Acid Blue 22", scrubbed with detergent and drycleaned with a mixture of CCl 4 , ligron and amyl alcohol.
Patent GB-322689-A (GB)
Title: Improvements in or relating to diaphragms or membranes for the reproduction and amplification of sounds
IPC: H04R7/00
Filed: 1929-01-26
Abstract: 322,689. Legge, A. di. Jan. 26, 1929. Diaphragms.-A diaphragm for use in phonographs, telephones, microphones, loud-speakers, &c. comprises a number of sheets of aluminium alternating with layers of very thin silk and having one or more sheets of celluloid combined therewith. The sheets are united by celluloid gum or other suitable adhesive and subjected to compression and drying to form a compound sheet.
Patent GB-1383302-A (GB)
Title: Monitor circuit
IPC: G01K1/02
Filed: 1971-01-20
Abstract: 1383302 Temperature alarms UNITED GAS INDUSTRIES Ltd 19 Jan 1972 [20 Jan 1971 11 Feb 1971] 2776/71 and 4442/71 Heading G4N  An automatic temperature alarm system comprises a bridge circuit, one branch of which incorporates a temperature sensitive resistance the output of the bridge being applied to multistage transistor amplifier circuitry controlling an audible alarm, this circuitry also being operated by the voltage across the sensitive branch. In a first embodiment, Fig. 1, for use with an A.C. supply, a resistive bridge 1-5 supplied between resistors 1, 4 and 2, 3 with A.C. from 31, 34 and the output is transformer coupled at 6 to the base of a transistor 8 of a 3-stage amplifier. Resistor 1 is a temperature dependent device and the operating voltage for transistor 8 is taken across the branch 1 of the bridge via diode 11 and resistor 10. In normal operation, resistor 1 has a low value and a bridge unbalance A.C. approximately in phase with the supply is applied to transistor 8 and under these conditions transistor 24 conducts on alternate half cycles to energize a relay coil 30 thereby holding contacts 32, 33 open and preventing operation of an audible alarm, not shown. When resistance 1 exceeds a value at which bridge balance would be attained, the output to transistor 8 becomes approximately 180 degrees out of phase with the supply and transistor 24 fails to conduct, deenergizing relay 30 and operating the alarm. This occurs also if branch 1 becomes open circuited. If resistor 1 is reduced by a short to a very small value, the voltage across the emitter-collector path of transistor 8 falls to nearly zero and transistor 24 is again rendered non-conductive. In a second embodiment, Fig. 2, for use with a steady potential a bridge A-D has a temperature sensitive resistor 34 between points B and C. Point A is connected to the base of a first transistor 38 and the collector thereof is connected to the base of a second transistor 50. When point A is positive with respect to B, transistor 38 is conductive and 50 is non- conductive, and vice-versa. Under normal conditions resistor 34 has a small resistance and point A is negative with respect to B and transistor 50 is conductive and relay coil 52 is energized to prevent closure of contacts 53, 54. When the resistor 34 increases in value, A becomes positive and transistor 50 is deactivated along with coil 52 and the contacts 53, 54 close. This is also the case if branch BC is open-circuited. If BC is shorted, the potential across the emitter-collector of transistor 50 falls to a value whereby the transistor is switched off and the alarm again sounds.
Patent GB-962626-A (GB)
Title: Forceps
IPC: A61B17/30
Filed: 1963-01-23
Abstract: 962,626. Forceps. A. GODDERT, and W. GODDERT, [trading as A. U. W. GODDERT [Firm of]]. Jan. 23, 1963 [April 4, 1962], No. 2832/63. Heading A5R. Forceps for pulling out hairs comprise a pair of gripper arms 1, 2 mounted with a compression spring 7 in a recess 5 in a holder 6 which is made of thermoplastic material in one piece with holder arms 8, 9, each gripper arm having an aperture which is engaged by a claw of a member 10, 11 pivoted on a holder arm. The gripper arms are slidable in the recess against the spring and are operated to grip a hair by pressing the holder arms together. Further pressure on the holder arms causes the pivotal members to pivot so that the gripper arms are retracted against the spring and withdraw the hair.
Patent GB-101174-A (GB)
Title: Improvements in or relating to Pistons.
Inventor: CHEDRU GUSTAVE EMILE
IPC: F02B33/00
Filed: 1916-02-29
Abstract: 101,174. Chedru, G. E. Aug. 25, 1915, [Convention date]. Valves, arrangement of -In order to prevent undue reduction of pressure above a pump piston c, a portion of the periphery of the piston is formed as a valve g which lifts during the suction stroke and permits the passage of fluid from the inlet pipe f to the space above the piston. The invention is particularly applicable to the charging-pump for a twostroke cycle internalcombustion Engine described in Specification 4350/14, [Class 7 (ii), Internal-combustion engines, Arrangement &c. of], and as shown. The annular piston c surrounds the engine cylinder b, and is formed with a reduced portion c' accommodating the annular valve portion g. The latter portion is provided with packing rings g<1>, and has a flange seated on the piston body; it may have wings g<10> sliding on the piston body. The part g is acted on by a spring h, preferably in the form of a ring with spider arms secured to the piston body by a nut h<1>.
Patent GB-178231-A (GB)
Title: Improvements in or relating to footrests for motor cycles
IPC: B62J25/00
Filed: 1921-01-24
Abstract: 178,231. Garis, A. E. de. Jan. 24, 1921. Foot-rests.-Relates to motor-cycle foot-rests of the type supported on front and rear pivoted rocking arms or cranks and controlled by springs. Independent rocking arms 8, 12 are pivoted at their upper ends on cross-bars 9, 13 secured to the frame, and at their lower ends are provided with pivot pins 2, 3 mounted in bearings 4, 6 on the underside of the foot-rests 7, the arms 8, 12 being so arranged that the rear part of the footrest is adapted to swing downwards and forwards, whilst the front part swings forwards but not downwards. Coiled control springs 18 are secured at one end to the cross-bar 13 and at the other end to sleeves 16 on the arms 12, the tension being adjusted by rotating the bar 13 and then securing it by a clamp to the frame. The pivoted movement of tne rocking arms may be limited by the engagement of pins 22 on the bar 13 with the ends of slots 23 in the sleeves 16. The foot-rests are adjustable along slots &c. 17 in the arms 8, 12. Control springs may also be provided for the arms 8. The foot-rests may be employed in conjunction with the resilient saddle supports described in Specification 112,076.
Patent GB-167201-A (GB)
Title: Improvements in processes for making viscose
IPC: C08B1/08
Filed: 1920-02-02
Abstract: More rapid penetration of cellulose by caustic alkali solution in the preparation of viscose, is obtained if the materials, after being subjected to a vacuum according to the parent Specification, are submitted to an increased pressure of about 3-4 atmospheres.
Patent GB-778545-A (GB)
Title: Method and apparatus for making a container body of sheet metal
Inventor: BOUW JOHANNES
IPC: B21D51/26
Filed: 1956-02-01
Abstract: 778,545. Making containers; stampings. NAAMLOOZE VENNOOTSCHAP VALEVEFA. Feb. 1, 1956, No. 3189/56. Classes 83 (2) and 83 (4). A method of making a container body of sheet metal, said body having a rectangular crosssection with rounded corners and an offset marginal edge at one extremity connected to said body by a shoulder comprises making a cylindrical body of sheet metal and deforming it by applying outwardly directed pressure at four circumferentially spaced zones thereby straightening the four portions of the body wall between said zones whilst decreasing the radius of curvature of said body wall in said zones. The apparatus comprises a top plate 12 connected to a bottom plate 11 by tie rods 13. Four pressure members 14 having transversely curved operating faces are slidably mounted between the plates by guides 15 engaging in slots 16 in the pressure members. The outward movement of the spring-loaded pressure members is effected. by a draw-bar 17 having two conical members 18 engaging complementary faces 19 on the pressure members. Two sets of springs 20 and 21 urge the pressure members inwardly. Four anvils 26 are positioned on the table 11 and each have a concave face comprising a portion 26a engaging the container body A, a portion 26b engaging the offset edge B of the container and an inclined portion 26c engaging the shoulder C of the container. In making the container, a cylindrical body A having an offset edge B and shoulder C is made from sheet metal (Fig. 6), by a pressing or rolling and seaming or welding operation. The cylindrical body is placed in the apparatus and deformed into a body having a rectangular cross-section with rounded corners. Finally the apparatus is collapsed and the deformed body A removed to be further operated on to form a container as shown in Fig. 5. Prior to uniting the ends of the container by a seaming operation, the edge B is flanged as at B<SP>1</SP> (Fig. 7), and the width of the flange at the former zones B<SP>2</SP> is found to be larger than the straight zones and this causes difficulties in the seaming operation. To overcome this, one or more indentations D are made in each corner zone by ridges 27 in the anvils 26 which co-operate with slots in the pressure members. To facilitate removal of the formed container the anvils are slidably mounted in guides 29 and held in position by wedges 30 operated by pneumatic actuators 31. When the wedges are removed the anvils are withdrawn by springs 32. The clearance between the anvils and the pressure members is adjusted by set screws 37 mounted on the lower plate 11.
Patent GB-1358177-A (GB)
Title: Carpet sweepers
Inventor: SMYTH D N
IPC: A47L11/22
Filed: 1971-07-06
Abstract: 1358177 Carpet sweepers S A BRUSH CO Ltd 6 July 1971 [8 July 1970] 3254/73 Divided out of 1358176 Heading A4F A carpet sweeper has a brush 16-frictionally driven by the sweeper supporting wheels 15 which are pivotally mounted by crank arms 29 on the sweeper body 1, each crank arm 29 sloping upwardly and away from the brush 16 with the wheel end of the arm 29 further from the brush 16 than the other end, so that downward force on the body 1 moves the wheels 15 into engagement with rollers 19 on the brush. The crank arms 29 are connected by pivots 30 to the dust trays 5, and downward force is applied to the body 1 via the handle 6 and members 7 secured thereto which act upon bearing blocks 55 carrying the brush axle 20, so that the downward force also lowers the brush 16 in accordance with the nature of the carpet being swept.
Patent GB-764937-A (GB)
Title: Improvements in or relating to grid diaphragms for minimising secondary x-ray radiation
IPC: G21K1/02
Filed: 1955-02-04
Abstract: 764,937. X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 4, 1955 [Feb. 8, 1954], No. 3403/55. Class 98(1) A diaphragm for minimizing secondary radiation, consisting of laminations of a ray absorbing metal and other laminations of a material which is pervious to X-rays, the laminations being focalized, is characterized in that the diaphragm is divided by walls 3 (Fig. 1) forming sections 4, arranged between parallel supports 1, 2, the walls 3 being focalized and the sections 4 being completely filled with laminations. The walls 3 are held by grooves 7 (Fig. 2) in the support. The laminations 5 of lead may be .05 mm. thick, and the X-ray pervious laminations may be .2 mm. thick. They may be assembled in a mould with adhesive between them to form shaped blocks for insertion into the sections, and the pervious laminations may be initially coated on one or both sides with lead foil. In an alternative, blocks of laminations of rectangular cross-section are placed in the sections as shown in Fig. 4.
Patent GB-372350-A (GB)
Title: Improvements relating to furnace fronts
IPC: F23D11/00
Filed: 1931-02-03
Abstract: 372,350. Furnace fronts. REID, J., 4, Llovds Avenue, London. Feb. 3, 1931, No. 3128. [Class 51 (i).] In a furnace front of the kind comprising an air chamber through which extends a helically slotted drum-shaped cylindrical lantern or register arranged around an oil or pulverized fuel burner, the lantern or register is provided on its inside with helical vanes. As shown in the Figure, the lantern d has secured upon its inner surface, adjacent the helical slots d<x>, helical vanes k. An inner tube g may be provided in the lantern so that the vanes k occupy an annular passage. The lantern is rotatable and the slots therein may be of different areas. Air is admitted to the casing surrounding the lantern through openings so arranged as to direct the air more or less tangentially against the lantern. Whirling of the air within the outer casing is prevented by ribs. A number of fronts as above described in the form of diamond shaped cells may be arranged adjacent to one another.
Patent GB-722254-A (GB)
Title: Improvements relating to dental apparatus
IPC: A61C3/025
Filed: 1951-02-13
Abstract: 722,254. Dentistry. BLACK, R. B. Feb. 13, 1951 [Feb. 15, 1950], No. 3466/51. Class 81 (2). The apparatus of Specification 706,684, in which the cutting of tooth structures is performed by an abrasive laden stream of gas is provided with duplicated powder distributing means and a control for selecting either at will In the equipment described, compressed gas from a cylinder 12 passes through a pressure reducing valve 16 but thereafter, by closure of a valve 20, may be made tc pass through a second reducing valve 19 when lower pressures are desired. It then passes tc branched conduits 13a, 13b, 13c, normally closed by pinch valves 27, 271 and 40, but these may be opened selectively by a manually operated control cam 43<1>. A main control switch 21a is arranged tc close when there is adequate supply pressure and passes current through a foot-actuated switch 50 to the appropriate vibrating magnet 30, 30<1>, selecting switches 29, 29<1> being automatically closed by mechanism 27, 27<1>. The vibration of the canister 22, 23 by the appropriate magnet distributes powder in the gas stream and this passes through the electrically actuated valve 44 to the hand piece. Opening valve 40 by the control knob 43 allows a stream of gas to pass directly to the handpiece in order to clear it of any powder previously used.
Patent GB-229290-A (GB)
Title: Improvements in electric generating plants operated by windmill power
IPC: H02P9/00
Filed: 1925-02-07
Abstract: 229,290. Constantin, L., and Beaulieu, P. Fortier-. Feb. 11, 1924, [Convention date]. Systems depending on the use of two or more machines; systems for supplying consuming devices; regulation, automatic.-A wind mill-operated electric generating plant comprising a central station and work circuits has the excitation of generators varied by automatic regulators controlled by the wind, the current and voltage varying in the same sense and the load being regulated according to the power available. As shown, the plant includes a number of continuous-current generators G separately excited from a battery B or an exciter C having regulators A controlled by the wind. The exciter C may be used for charging the battery B.
Patent GB-1069091-A (GB)
Title: Improvements in or relating to foamed polyurethanes
Inventor: PORTER MAURICE RICHARD
IPC: C08J9/00
Filed: 1963-01-29
Abstract: A composition for use in the production of foamed polyurethanes is obtained by mixing a polysiloxane polyoxyalkylene - copolymer or polysiloxane polyalkyleneoxy - copolymer and 0.1-10% by weight of an aliphatic carboxylic acid having 1-20 C or an anhydride thereof. The preferred acids are (CH2CO)2O, CH3CO2H HCO2H, lactic acid, oleic acid, oxalic acid, sorbic acid or CF3CO2H, many others are specified. Foamed polyurethanes are prepared by reacting a polyhydric polyether, a polyisocyanate or polyisothiocyanate and a foaming agent in the presence of a catalyst and the above defined composition.
Patent GB-1193782-A (GB)
Title: Improvements in or relating to Rivets
IPC: B21J15/10
Filed: 1968-01-23
Abstract: 1,193,782. Riveting. KOPPERS CO. Inc. 23 Jan., 1968 [27 Jan., 1967], No. 3614/68. Heading B3U. [Also in Division F2] Two or more sheets 33, 35 are joined together by a reinforced thermosetting plastics rod 27 which is deformed at each end and heated to cure the plastics. The deforming is performed simultaneously at each end by metal dies 37, 39 or non-metallic dies 59, 51 which have electric heaters 41 or radio-frequency electrodes 63, 65 respectively. The heaters are preferably switched on after the deformation whereas the radio-frequency generator 69 is switched on before movement of the dies so that the curing and deformation occur simultaneously. The plastics is, for example, a polyester or an epoxy resin and it is reinforced with fibres of glass or asbestos. The glass fibres may be chopped glass fibres arranged heterogeneously or continuous fibres arranged in parallel. The rod may be headed at one end before insertion into the sheets. The sheets may be plastics with a similar co-efficient of expansion to the rivet material.
Patent GB-237178-A (GB)
Title: Improvements in and relating to combination tools
IPC: B25H7/00
Filed: 1925-02-09
Abstract: 237,178. Waldron, L. K. Feb. 9, 1925. Squares; bevela and mitres; curve-describing instruments.-A tool which can be used tool which can be used as a square, bevel and mitre, level, marking gauge, depth gauge, centre gauge, and for describing circular arcs comprises a mitre frame 1 having an inclined upper edge 3 and formed with slots 4, 5. Mounted on a pivot 7 at the upper end of the frame 1 is a mitre gauge 6, Fig. 5, which is quadrantshaped at one end, the pivot 7 passing through the centre of the quadrant. The quadrant is formed with a number of holes 8, any one of which can be engaged by a spring plunger 9 mounted in a lug 10 on the rear face 2 of the frame 1. The blade of the gauge 6 passes into the slot 4 and is provided with a saw-guide 14. A rule 15 is slidably mounted in the slot 5 and can be secured by a clamping-bolt 16. Two spirit levels 17 are mounted at right-angles to each other on the frame. The lugs 10 on the back 2 are threaded to receive screws 10<1> which can be partly withdrawn to act as supporting legs. The rule 15 is formed with a slot 19 and holes 20, and at one end is pivotaily connected to a second rule 22, which is also formed with holes. The rule 15 can be reversed from the position shown in Fig. 1, the pivot 23 being then passed through the slot 19. The rule 22 adjustably carries a square 32 so that it can be used when detached as a depth gaugs or centre marking gauge. The holes in the rules facilitate their use for describing circles. Adjustably carried on the frame is a member 25 having a right-angled extension 29, this member being used as a gauge to facilitate cutting a number of pieces to the same length. An additional saw guide 30 is provided above the pivot 7 and is held by a, spring clamp 31 engaging in apertures 31<1>, or by a screw.
Patent GB-742241-A (GB)
Title: Improvements in the cooling of turbines
Inventor: ROESCH GEORGES HENRY
IPC: F01D9/06
Filed: 1951-02-15
Abstract: 742,241. Gas turbines. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Feb. 15, 1952 [Feb. 15, 1951], No. 3704/51. Class 110(3) In a gas turbine having passages therein for the supply of gaseous coolant to the blades and their attachments to the rotor and stator, the walls bounding said passages along at least part of their length are spaced from adjacent elements of the rotor and stator by gaps affording heatinsulating layers. The rotor comprises discs 1, 2, 3 which have interengaging flanges secured as shown by a screwed connection 25 and a welded joint 26. Each blade 5 has a " fir tree" root portion which is provided with an integral platform 6 reinforced by webs 4b and has holes 8, 9a 9b, 12 for the passage of cooling air therethrough. Each stator blade is located in an annular groove 20a in the stator frame 20 and has an integral platform 16. Sheet metal troughs 24 are disposed within cavities 23 formed in the stator frame and have flanges 24a adapted to abut the blade roots and air inlets 24b formed in each quadrant. Cooling air is discharged through passages 18, 19 in the stator blades into the main gas flow whilst further cooling air leaks through their roots into an air space 17 which is defined by adjacent platforms 16 and a polished sheet metal liner 34. The rotor is carried by shafts 36, 38 which are journalled in bearings 37, 39 respectively; the bearings 37 being enclosed by a fairing 48 and a member 51. Each bearing housing, such as 40 is supported by a spider having radially disposed oval struts 41a, 41b surrounded by sheet metal envelopes 45, 46. Each strut is hollow for the passage of cooling air and lubricating pipes 44 and has a polished sheet metal liner 47. Each set of: struts 41a, 41b communicates with a separate, valve-controlled source of cooling air. Part of the air from the strut 41a passes through the seals 30, 31 whilst the remainder escapes through the first stage of the turbine rotor. Air from the struts 41b are fed through the shaft 36 to the intermediate turbine stage. Alternate struts 43a supply air to the seal 32 and the last turbine stage respectively. Each disc has an enclosure member such as 27, 28, 29 provided with ribs defining, together with a polished sheet metal housing 35, radial passages for the cooling air. Radial bearing 39 and thrust bearing 53 are mounted on an axially adjustable sleeve 55 which permits adjustment of the clearance between the parts of the radial seal 32 and is locked in position by a splined member 57. Air is circulated between the envelopes 49, 50 surrounding the fairing 48, the air escaping through ports in the members 46, 40. Specification 742,288 is referred to.