baber/WOPTO huggingface dataset:
Patent GB-406589-A (GB)
Title: Improvements in tracks for endless track vehicles
IPC: B62D55/24
Filed: 1933-08-21
Abstract: 406,589. Endless tracks for vehicles. KEGRESSE, A., 156, Rue Armand Silvestre, Courbevoie, near Paris. Aug. 21, 1933, No. 23295. Convention date, Aug. 31, 1932. [Class 79 (i).] In an endless track of the kind in which the load-supporting rollers run on a flexible belt provided on one side with guiding and driving elements and on the other side with metal plates and resilient tread blocks, the belt or a section of the belt is provided at each end with connecting means whereby the ends of the belt may be connected together, or the belt may be made up of sections connected together. In the construction shown in Figs. 1 and 2, the belt is made up of sections 1 formed near their ends with holes for studs or pins 5 secured to a metal plate 3 which thus connects the sections together. The metal plate is clamped to the belt by bolts which pass through holes or notches 6 in the belt sections and are also used to secure resilient tread blocks 4, guiding blocks 7 and driving blocks 8 to the plates and the belt. Each belt section may be long enough to carry several sets of metal plates and blocks, or may carry one set only. In the construction shown in Fig. 3, the ends of the belt 1 are thickened and fit in recesses in the corresponding plate 3. The studs or pins 5 extend into the guiding blocks 7 and prevent the latter from turning on the single securing bolt.
Patent GB-1043727-A (GB)
Title: Apparatus for detecting abnormal environmental conditions
IPC: G08B17/10
Filed: 1963-06-12
Abstract: 1,043,727. Temperature alarms. BRK. ELECTRONICS Inc. June 12, 1963 [June 22, 1962], No. 23382/63. Heading G4N. [Also in Division G1] Fire detection apparatus employs the sudden change in humidity of the atmosphere and the presence of conductive particles to alter the ratio between a sensitive resistance freely exposed to the atmosphere and a second sensitive resistance which is shielded from the atmosphere so that it only responds slowly to changes in the atmosphere, to compensate for normal changes in temperature and humidity. As shown in Fig. 1, three electrodes 2, 3, 4 are formed on the surface of the envelope 1 of a thermionic valve. The electrodes 2 and 4 are formed by firing drawn lines of silver on to the valve but the central electrode is formed by a corrugated band of conducting material. A corrugated insulating screen covers the area between electrodes 2 and 3 so that the atmosphere only reaches it through the corrugations. The surface of the envelope between the electrodes forms the sensitive elements and has a moisture sensitive resistance. Alternatively, the resistances may be formed on the surface of printed circuit boards having a suitable coating such as a mixture of lithium chloride and cobalt oxide or sodium chloride. Various other substrates are also mentioned. Detecting circuit.-As shown in Fig. 10 the two resistances, R1 and R2, are connected across the terminals of a smoothed supply obtained from the rectified output of a transformer. The centre tap 3 is connected through capacitor 34 to the control electrode of a trigger unit 27, the control electrode also being biased through resistor 33. If a rapid change occurs in the value of R1 then the resultant change produces a pulse on the control electrode despite the presence of capacitor 34, thus firing the trigger device and causing a large current to flow from the supply thus activating a relay at the supply which may operate alarms. Other similar circuits are also described (Figs. 3 and 9, not shown). The resistance of the detectors is preferably 10<9> ohms. The supply may be pulsed D.C., D.C. or A.C. and the trigger may comprise hot or cold cathode tubes or transistors.
Patent GB-608498-A (GB)
Title: Improvements in the construction of chairs
IPC: A47C7/56
Filed: 1945-09-11
Abstract: 608,498. Seats. SOC. MAROCAINE DE CONSTRUCTIONS MECANIQUES. Sept. 11, 1945, No. 23408. Convention date. Dec. 8, 1944. [Classes 52(ii) and 52(v)] Theatre or like seats are supported by a single central leg 2 having a channelled section to receive a pressed metal back and side frame structure, preferably made in two symmetrical parts 1, and curved to the shape swept out by the rear edge of the tilting seat. In the preferred construction the flanges 5 of the parts 1 and also the lugs 16 on a seat back element 3 are inserted in the leg channel. Arm rests 27 may be provided and adjacent seats can be coupled by fish-plates engaging beaded edges 8 on the front edges of the parts 1. The seat is tiltable on trunnions 18 under the influence of a spring 21, a lug 19 at the rear being guided m the channel of the leg. The seat is in two parts, the' lower part 22 carrying the trunnions and the other part 24, which may be upholstered, fitting thereon like a cover, both sections being internally stiffened by ribs 23, 26.
Patent GB-1509146-A (GB)
Title: Air-break contactor for dc and ac systems
IPC: H01H1/22
Filed: 1976-06-07
Abstract: The air-type contactor having a blade-supported hinged armature, magnetic blasting and arc chambers has a moving switching element which is constructed as a U-shaped passive switching link with contact elements (4) arranged on the broad side of the limb ends and 180 DEG rotation of the limbs, the centre part (3) of each limb, which is rotated through 90 DEG , in each case projecting into the arc chambers (9), on edge, through a narrow passage slot (32) in the narrow wall of each of the separate arc chambers (9). Each passage slot (32) is at the same time designed as a blasting-out opening of a smaller part of the arc chamber (9) with approximately 1/4  of the arc path for the one current direction during AC voltage switching operation. <IMAGE>
Patent GB-249029-A (GB)
Title: Improvements in or relating to garages
IPC: E04H6/04
Filed: 1925-09-21
Abstract: 249,029. Menzies, W. G. D. Sept. 21, 1925. Huts; portable buildings.-Metal sheds, stated to be of use as garages and of the form consisting of two hoods hinged together with the open ends of the hoods adjacent and facing one hood being larger and adapted to enclose the other, have the hoods made up of U-shaped segments 11 connected by overlapping joints and one hood formed of a larger number of segments than the other. The segments of one hood are secured between a ring of metal 18 and a washer 20, the ring being mounted on a plate 21 to which the segments of the other hood are bolted and which can rotate on a bolt 17. Arms 23 carry counterbalance weights 24 for the movable hood.
Patent GB-1360922-A (GB)
Title: Magneto-optic readout apparatus
IPC: G11B11/10
Filed: 1972-05-19
Abstract: 1360922 Photo-detector systems INTERNATIONAL BUSINESS MACHINES CORP 19 May 1972 [8 June 1971] 23562/72 Heading G1A [Also in Divisions H1 and H3] In a moving magnetic bubble domain device, domains in an interrogation region are detected by the Faraday or Kerr effects, a laser being used as a light detector. In Fig. 1, a bubble domain 102 is shown in a magnetic sheet 101. Light emitted by a semi-conductor laser 107 is polarized by polarizer 103, and that part of the beam passing through the domain has its plane of polarization rotated relative to the remainder of the beam as shown. The beam is then incident on a second polarizer 105 which is oriented so as to pass only that part of the beam affected by the domain. This part is then incident on a second semi-conductor laser 109. In the preferred embodiment both lasers are biased to a point just below their lasing thresholds, so that when a domain is present in the magnetic sheet the non-lasing emission from laser 107 incident on laser 109 is sufficient to trigger the latter to a lasing condition. The laser output in turn triggers laser 107, and an signal indicative of the onset of lasing may be obtained by monitoring the bias current of either laser. A change in the bias current thus denotes that a domain is present in the interrogation region of the magnetic sheet. Alternatively one of the lasers may always be operated above its lasing threshold, either c.w. or pulsed, so that only one laser is triggered. Fig. 2 shows the sheet 101 with a magnetic overlay pattern on it for propagation of domains in conventional manner by a rotating in-plane field. The sheet has polarizers 103, 105 thereon, and the assembly also has strengthening plates 205, 207 which may contain devices for producing the domain stabilizing and/or propagating fields. Laser arrays 202 and 204 enable several interrogation regions to be read, each as shown in Fig. 1. The polarizers 103, 105 are not strictly necessary as the laser outputs are naturally polarized. The lasers are preferably of like kinds, e.g. Ga-As heterojunction devices for use at room temperature. The arrangement of reflectors on the lasers will depend on whether or not one of them is always lasing as explained with regard to Figs. 4 and 5, (not shown), if the laser is used as a detector it has a reflective coating at the end remote from the second laser, and has an  anti-reflective coating it the other end. This latter coating is of course omitted if the laser is required to always produce a lasing output. To prevent short circuiting the laser, the reflective coating, which is of aluminium, is preceded by a silicon monoxide layer. Each laser may also be provided with a contiguous lens to collimate its output. By suitable choice of the axes of polarization the apparatus can detect an absence of domains at the interrogation region.
Patent GB-424584-A (GB)
Title: Improvements in carburetters for internal combustion engines
IPC: F02M17/26
Filed: 1933-08-24
Abstract: 424,584. Carburetters. JENNER, G., and SPEIRS, J., 1, Waterloo Street, St. Luke's, London. Aug. 24, 1933, No. 23579. [Class 7 (iii)] Fuel from a float chamber 5 is maintained in a sump 4 at the level of a septum 6 pierced by a large number of pin-holes. Above the septum is a perforated plate 13 which divides a vaporizing chamber 1 from a mixing chamber 2 which has a main air inlet pipe 18, and an outlet pipe 20 to the engine. A tube 14 extending upwardly from the plate 13 serves to admit primary air to vaporize the fuel moistening the surface of the septum, and such tube may be provided with a ported regulating sleeve 17. A rod 26 passing through tube 14 is detachably connected to a plate 8 adapted to be moved over the septum to control the number of holes in action. The amount of air through tube 14 decreases as the valve 19 in air inlet 18 is opened. The throttle valve 21, valve 19, and rod 26 are interconnected by variable linkage to which the sleeve 17 may be connected. To maintain the engine running with closed throttle, a byepass is provided comprising a fuel passage from the sump 4, air inlets 34 thereto and a valve 31 loaded by spring 32 and adapted to be opened by a cam 33 on the spindle of the throttle valve 21 when the latter is closed.
Patent GB-714080-A (GB)
Title: Improvement in preparation of thermoset resins from compounds containing epoxy groups
IPC: C08G59/62
Filed: 1951-10-11
Abstract: Mouldable compositions comprise a diepoxide of a glycol-bis-exo-dihydrodicyclopentadienyl ether with the formula <FORM:0714080/IV (a)/1> (where R is an alkylene group with 1 to 12 carbon atoms or a group (R1-O)xR1 where R1 is an alkylene group with 2 to 4 carbon atoms and x is 1 to 8) together with a polycarboxylic acid containing three to six carboxyl groups in such an amount as to provide 0.7 to 2.0 carboxyl groups for each epoxide group.  Suitable acids are citric, tricarballylic, hemimellitic, trimellitic or pyromellitic or acids obtained by forming half esters from dicarboxylic acids such as phthalic, maleic, succinic, glutaric, adipic, suberic, azelaic, or sebacic with polyhydric alcohols containing at least three hydroxyl groups such as glycerol, pentaerythritol, dipentaerythritol, mannitol or sorbitol.  The epoxy ether and the acid are reacted together at 50-250 DEG C. if desired in a mould.  Fillers, dyes, pigments may be added to the compositions, or plasticizers, e.g. dibutyl phthalate, tricresyl phosphate or epoxidised vegetable oils.  Setting of the compositions may be catalyzed by addition, e.g. of boron trifluoride or its complexes with ethers, acids or amines.  Strong acids or their partial esters, e.g. butyl or cresyl diacid phosphates, may also be used as catalysts.  In example (1) the diepoxide of bis exo-dihydrodicyclopentadienyl ether of diethylene glycol was mixed with pentaerythrityl tetra-acid-trimaleate-monophthalate and hardened at 150 DEG C.  (2) The ether of propylene glycol was employed.  (3) The ether of ethylene glycol was employed.  (4) The effect of a wide variety of acids with the ether of example 1 is demonstrated.  U.S.A. Specification 2,543,419 is referred to.ALSO:Di-epoxides of glycol bis-exo-dihydro-dicyclopentadienyl ethers of the formula <FORM:0714080/IV (b)/1> in which R is an akylene group of 1-12 carbon atoms or a group (R1O)xR1 where R1 is an alkylene group of 2-4 carbon atoms and x=1 to 8 are made by oxidizing with performic or peracetic acid an ether of the formula <FORM:0714080/IV (b)/2> U.S.A. Specification 2,543,419 is referred to.
Patent GB-1048668-A (GB)
Title: Method and apparatus for testing rod-like tobacco articles or components
Inventor: RUDSZINAT WILLY
IPC: A24C5/34
Filed: 1961-12-15
Abstract: 1,048,668. Cigarette-making machines. K. KÍRBER. Jan. 7, 1963 [Dec. 15, 1961], No. 23779/66. Divided out of 1,048,654. Heading A2C. The Specification describes the same apparatus as that described in Specification 1,048,654 but the claims are directed to a method for checking the peripheral fluid tightness of rod-like tobacco or associated articles each having an outer wrapper, a filler and an opening at each end, by means of a fluid pressure test comprising: conveying the articles transversely to their axes, forming a substantially closed chamber connecting with the space inside the outer wrapper of each article being tested, causing different air pressures to be exerted inwardly and outwardly of the wrapper, admitting air to the chamber through a restricted flow path, and causing the air pressure within the chamber to act on a fluid pressure responder device controlling the rejection of faulty cigarettes.
Patent GB-263234-A (GB)
Title: Improvements in or relating to safety devices for burners
IPC: F23N5/24
Filed: 1925-09-24
Abstract: 263,234. Dahl, S. Sept. 24, 1925. Burners, attaching and mounting.-In means for preventing the removal of a liquid-fuel, or other, burner 15 from a boiler front 10 or the like before the fuel supply valve 38 is closed, the burner 15 is secured to the fixed fuel conduit 30 by means of a pivoted stirrup 40 and a screw 46, access to the head 52 of which is prevented, when the valve 38 is open, by a guard 54 carried by an arm 56, which is pivoted loosely on a shaft 58, journaled in brackets on the boiler front 10, and which is retained in position by a pivoted latch 70 engaging a tooth 68 thereon. The shaft 58 is connected by a crank-arm 82, links 84, 92 and a pivoted lever 86 to a link 94 having an eye 96 held between collars 98 on the screwed stem 80 of the valve 38. When the stem. 80 is operated to close the valve, the shaft 58 is rotated and a pin 78 carried by an arm 76 thereon lifts the latch 70 to release the arm 56, thereby giving access to the screw 46. On turning the stem 80 to open the valve, the arm 56 is raised by a member 106 on the shaft engaging a projection 108 thereon until the latch 70 reengages the tooth 68.
Patent GB-587964-A (GB)
Title: Improvements in adjustable set squares
IPC: B43L13/14
Filed: 1944-11-30
Abstract: 587,964. Set - squares. NORTH OF ENGLAND SCHOOL FURNISHING CO., Ltd., and WISEMAN, F. Nov. 30, 1944, No. 23915. [Class 97 (iii)] The hinge pivot of an adjustable set-square, in which one edge a of the square A is pivoted to a ,straight edge B and may be clamped at any desired angle to a quadrant D fixed to the straight edge B, is formed by a plate C, secured to the square near one corner and having a projecting portion c, and a plate C' secured to the straight-edge, the two plates being connected together by a pin c<1> fixed to one plate and forming a pivot for the other plate. The indicating pointer D<1> on the square A serves also as a clamp.
Patent GB-1419504-A (GB)
Title: Electrophotographic toner composition
IPC: D06M13/02
Filed: 1972-05-22
Abstract: 1419504 Electrostatographic toners AGFAGEVAERT 11 May 1973 [22 May 1972] 24030/72 Heading C3P [Also in Division G2] An electrostatographic toner comprising finely divided pigmented polymer particles, comprises carbon black, polystyrene as resin binder, having a molecular weight between 30,000 and 70,000, and at least one diester of orthophthalic or metaphthalic acid which is solid at room temperature, as plasticizer, the proportion by weight of carbon to binder is between 5 : 100 and 20: 100 and the proportion by weight of plasticizer(s) to binder is between 2: 100 and 15 : 100. Plasticizers specified are diphenyl-, dihexyl-, dicyclohexyl-, and diethoxyethyl phthalate. The toner may be made by mixing the ingredients under pulverization and ball milling. The mixture is then melted and mixed so that a homogeneous composition is formed, and then solidified and ground to the required particle size, e.g. less than 50 Á.
Patent GB-412440-A (GB)
Title: Improvements in and relating to controlling mechanism
IPC: B41B21/36
Filed: 1933-08-30
Abstract: 412,440. Stencil switches. UHERTYPE AKT.-GES., Glarus, Switzerland. Aug. 30, 1933, No. 24041. Convention date, Aug. 30, 1932. [Class 38 (v).] Controlling means for apparatus, such as photographic type - composing machines employing freely moving operating bodies, e.g. balls, comprises ball-feeding mechanism and means permitting the balls to travel, without losing their pre-arranged order after they leave the feeding means, into position to operate the mechanism to be controlled. In the form shown, balls 13 are released one at a time by a key 16 and pass down the channel 14 to a reciprocating plunger 22 which raises them to the point of delivery 24, whence they pass into the conveyer 35. The balls are ejected from the delivery point 24 by an arm 25 operated by a cam 27 on the crank disc 19 driving the plunger 22. The conveyer comprises a link chain 34 carrying cages 36 for the balls. The balls drop from the conveyer down a channel 38 and are raised by a reciprocating plunger 39 to operate an arm 45 closing contacts 47, 48. An ejector 62 similar to the ejector 25 and operated from the crank-disc 40 of the plunger 39 returns the balls to the feeding point down a channel 63. The contacts 47, 48 are kept closed by an arm 52 until released by an arm 56 operated by a second cam 59 on the crank-disc 40. Separate keys, channels, and contacts are provided for each character in a photographic type-composing machine and the cages of the conveyer are provided with a separate opening for each channel, all the parts being driven from a common drive. Trap-doors 65 and return channels 64 are provided to permit a misplaced ball to be returned without operating the contacts.
Patent GB-737303-A (GB)
Title: Foundry moulding machines
IPC: B22C15/10
Filed: 1953-09-01
Abstract: 737,303. Moulding-machines. AKTIEBOLAGET WESTIN & BACKLUND. Sept. 1, 1953 [Sept. 11, 1952], No. 24156/53. Class 83 (1). A moulding-machine comprising means for transmitting pattern plates successively through a number of successive treatment stations, including a flask-filling station and a patterndrawing station, and back to the vicinity of the initial position, is characterized by means for inverting the pattern plate and mould assembly before drawing, and a second means positioned to receive the pattern plate separated at the drawing station and effect a second inversion of said plate before its association in a succeeding mould assembly for positioning at the flaskfilling station. A pattern plate 6 carrying a pattern 15 is movable on guides 8 by a piston 7, from a table 4b invertable by a shaft 3, to a station 9 where a flask 12 is manually or automatically mounted on said plate, and sand is charged into the flask from a hopper 9a. The assembly is then jolted by a device comprising a jolt piston 29c and also a piston 38 having a head 39 which engages with a recess in the pattern plate to locate it. At the next station 10 a squeeze board 30 is placed on the top of the flask, ingot plugs inserted if desired and the assembly then moved to a table 5b of a press 11a mounted on, and invertable by means of, the shaft 3. The sand is rammed, the press inverted, the squeezing plate lowered to draw the mould from the pattern, and the pattern moved back to the upper table 4a of the inverting device 4 by a piston 13, through an air-blast cleaning station 14, and a station 16 where it is sprayed with a parting powder or liquid from nozzles 32. The pattern is then returned to its initial position by inversion of the device 4. The shaft 3 is rotated by pistons 34 actuating a chain 19.
Patent GB-1110976-A (GB)
Title: Improvements in and relating to transmission mechanisms
IPC: F16H3/00
Filed: 1965-06-08
Abstract: 1,110,976. Reverse gear. PHILIPS ELECTRONIC and ASSOCIATED INDUSTRIES Ltd. 8 June, 1965 [9 June, 1964], No. 24193/65. Heading F2D. A shaft 13 is driven in one direction only, from a shaft 1 driven in either direction by a self-starting synchronous motor; a sleeve 8 threaded on screw thread 5 on shaft 1 has two discs 6, 7 which abut a disc 9 on shaft 13 according to the direction of rotation of shaft 1; collars 3, 4 on-the shaft 1 define the end positions of sleeve 8 and vanes 14 or a light friction brake, not shown, produces drag on sleeve 8 to cause the necessary relative rotation of sleeve 8 and the screw-thread 5. A slanting wedge may replace the screw-thread.
Patent GB-1115379-A (GB)
Title: Improvements in or relating to fluid control valves
IPC: F15B11/08
Filed: 1966-06-01
Abstract: 1,115,379. Hydraulic control circuits. WESTINGHOUSE BREMSEN-UND APPARATEBAU G. m. b. H. June 1, 1966 [June 4, 1965], No. 24347/66. Heading F1P. The centrally spring-biassed manually operated spool of an open centre valve 3, Fig. 1 for controlling supply and exhaust of hydraulic fluid to and from a double acting cylinder 2 is held in either of its operative end positions during a stroke of the cylinder 2 by admission of at least part of the exhaust fluid in say line 4 through a gap formed between an edge 25, Fig. 3, on an end 13 of the spool and an edge 26 of a recess 19 in the valve body into which line 4 leads and which is itself connected through said gap to a chamber 16 so as to act against a plunger disc 14 on the end 13 of the valve spool; the chamber 16 being connected through a restriction 18 and a line 7 to a reservoir and the recess 19 being connected through a pressure limiting valve 12 to said reservoir. The restriction 18 and limiting valve 12 normally cooperate to provide the necessary back pressure in chamber 16 to maintain the spool in an operative end position but in the event of any reduction in pressure in line 4 allows the pressure in chamber 16 to fall and the spool to be returned to its central neutral position. A further double-acting cylinder 20 controlled by a spool valve 3a may be arranged in parallel with valve 3 and cylinder 2 and is supplied by a pump 1 delivering through a common line 6 provided with a relief valve 8.
Patent GB-155531-A (GB)
Title: Improvements in or relating to sleeve valve internal-combustion engines
IPC: F01L7/04
Filed: 1919-06-12
Abstract: 155,531. White, J., and Wall, A. W. June 12, 1919. Drawings to Specification. Valves.-A sleeve-valve engine has one or more exhaust ports overrun by the piston near the end of the out-stroke, and admission ports distributed around the entire circumference of the cylinder in a stationary wall and situated between the exhaust port or ports and the piston when the latter is at the end of the out-strolce. The particular construction described is the same as that described in concurrent Specifications 155,311 and 155,532 to 155,535.