baber/WOPTO huggingface dataset:
Patent GB-272435-A (GB)
Title: Improvements in mining machines
IPC: E21C25/56
Filed: 1926-10-07
Abstract: 272,435. O'Toole, E. June 14, 1926, [Convention date]. Push plates and scrapers, construction of. - A longwall mining machine has combined undercutting and conveying mechanism, comprising a chain extending the length of the face and carrying over-hanging conveyer flights, cutter bits secured to the free ends of the flights and means for folding back the flights during the return run of the chain. As shown, a base plate 2 has along its front and rear edges respectively a Z-bar 4 and a channel bar 3, the bars 3. 4, being connected by a cover plate 5. At. the ends the base plate 2 is widened rearwardly and the bar 3 is rearwardly bent. The delivery end of the machine is raised and provided with a front extension 6 of the base plate and a retaining plate 6<a>. A chain 41 is trained round sprockets 23, 19 at the ends of the plate 2 and pivotally carries conveyer flights 9 provided with cutters 45 and with wings 44 which, in the forward flight engage the front edge of the base plate or of a wearing plate 47 to hold the flights in extended position; at the beginning of the return movement, the flights engage the bar 3 and are turned inwardly parallel to the chain, being guided by bars 49, the flights being again moved outwardly on contact of the wings 44 with an inclined angle bar 19. A bar 20 with cut. ters 21 is secured to the spindle of the sprocket 19 to make a vertical cut in the! coal &c. The machine is driven by a' vertical motor 39 through chain gearing 37, bevel gearing, chain gearing 29 and bevel gearing 24 and is advanced by selfpropelling machines which also support the roof. Specification 237,772 is referred to.
Patent GB-834582-A (GB)
Title: Improvements in or relating to screen printing machines, particularly for textiles
Inventor: MOSS MAURICE
IPC: B41F15/08
Filed: 1956-08-15
Abstract: 834,582. Stencilling-apparatus; feeding webs. COLDEN MANUFACTURING CO. Ltd. Dec. 19, 1956 [Aug. 15, 1956], No. 24959/56. Classes 100(1) and 100(2) In a screen printing machine of the kind comprising an endless belt which is moved intermittently to carry a web of textile material step by step beneath one or more. stencil frames, the belt is moved by pusher members which reciprocate and engage individually longitudinally adjustable abutments provided in spaced apart relationship along each edge of the belt. The abutments consist of bolts 3; Fig. 3, adjustable in and locked in desired position by nuts 7 in plates 4, Figs. 1 and 3, secured to the inside surface of the belt along both edges thereof by bolts 9, the belt being sandwiched between the plates 4 and plates 8. The abutments are engaged by. teeth 1 on reciprocating bars 2, and are adjusted to compensate for varying contraction or expansion of different parts of the belt. At the web-discharge end of the machine, the belt passes over a roller 10 supported in bearings 11 horizontally movable by adjusting means 12 so as separately to adjust each end of the roller to ensure true running. The belt also previously passes over a tensioning and guiding roller 13 supported in bearings 14, each adjustable along an inclined guide 15 to maintain the required tension and guide the web squarely on to the roller 10, irrespective of any web distortion. Similar rollers may be positioned at the other end of the machine. Each bar 2 is associated with a bar 28 carrying rollers and riding on inclined tracks so as to raise the bar 2 for engagement of a tooth with an abutment and moving of the belt, and to lower it for the return stroke.
Patent GB-757573-A (GB)
Title: Process for the production of synthetic resins
IPC: C08G4/00
Filed: 1954-08-27
Abstract: Synthetic resins are prepared by reacting by addition an unsaturated cycloacetal containing the group <FORM:0757573/IV(a)/1> <FORM:0757573/IV(a)/2> with one or more unsaturated compounds containing one or more OH groups, and copolymerizing the unsaturated addition compound thus formed with one or more vinyl and/or vinylidene compounds. Preferred cycloacetals are those formed by condensation of pentaerythritol with acrolein, particularly diallylidene pentaerythritol; other cycloacetals may be prepared from trimethylol ethane, trimethylol propane or glycerine condensed with a ,b -unsaturated aldehydes.  The unsaturated compounds containing hydroxyl groups may be unsaturated di- or poly-carboxylic acids, their esterification or amidation products which still carry at least one free OH group, polyhydric unsaturated alcohols or their esterification products with at least one free OH group or unsaturated hydroxycarboxylic acids; suitable unsaturated compounds are maleic acid, fumaric acid, the dehydration products of citric acid and dihydromuconic acid, esters of maleic anhydride and polyhydric alcohols or phenols, butene-2-diol-1,4 and esters thereof. The vinyl and/or vinylidene compound may be triallyl cyanurate, diallyl phthalate, styrene, an acrylate or methacrylate, or vinyl acetate, and copolymerization may be effected in the presence of a catalyst such as benzoyl peroxide.ALSO:Diallylidene pentaerythritol of formula <FORM:0757573/IV(a)/1> is prepared by reacting acrolein with pentaerythritol in the presence of small quantities of hydroquinone and oxalic acid.  Ethylene glycol bis-(monomaleic ester) is prepared by bringing 1 mol. of ethylene glycol and 2 mols. of maleic acid anhydride into solution at about 40 DEG  C. and heating for 3-4 hours at 100 DEG  C.  Pentaerythritol tetra-(monomaleic ester) is prepared by esterifying 1 mol. of pentaerythritol with 4 mols. of maleic acid anhydride.
Patent GB-1172347-A (GB)
Title: Information Comparing and Summarizing Machine
Inventor: LORD JOHN GARVIN
IPC: G06K17/00
Filed: 1968-05-24
Abstract: 1,172,347. Test grading machines. J. G. LORD. 24 May, 1968, No. 25032/68. Heading G4M. Holes in subject and master cards are compared by pairs of probes 26, 28, Fig. 9, which are interconnected by a pin 30, the pin 30 remaining in longitudinal channel 50 of a gate 44 if both probes sense the same hole/no hole condition, but moving into a transverse extension 42 to prevent axial movement of gate 44 if the probes 26, 28 sense different conditions. The master card on a carriage 60, Fig. 3, is presented to probes 26 and each subject card placed on a carriage 62 is presented to probes 28 by manual rotation of a shaft 58, cam 70, bell crank 66 and link 64 reciprocating the carriage 62. Two columns of the cards are allocated to the test number, and are compared by two groups of 10 probe pairs, each of the two corresponding gates preventing a follower from dropping into a recess on a cam fixed to shaft 58 when there is lack of correspondence, whereby a latch is engaged to prevent further rotation of shaft 58. Further cams on shaft 58 test the conditions of gates 44 associated with columns of the cards allocated to the various test questions, recesses 112, Fig. 7, in these cams 95 allowing bell cranks 108 to pivot provided the pins 30 are centrally located in the associated gates 44. The cams 95 become effective in turn so that punch rods 114, pivoted at 113 to bell cranks 108, punch holes in the columns appertaining to correctly answered questions in sequence. Each of the question gates 44 carries a pawl 140 actuating an elongated pinion 142 which meshes with a rack to drive a punch 132, Fig. 3, along a further column of the subject card to a position corresponding to the number of correct answers made. Another cam actuates arm 118 at the end of a cycle to actuate the punch 132. Other pawls 150 on the question gates operate a total counter 152.
Patent GB-1388501-A (GB)
Title: Method of and apparatus for depositing preciselx metered quantities of liquid on a surface
IPC: G01F11/00
Filed: 1972-05-26
Abstract: 1388501 Drop dispenser BIO-MEDICAL SCIENCES Inc 26 May 1972 [7 June 1971] 25074/72 Heading B8N Apparatus for depositing a plurality of drops of liquid on a receiving sheet 10 comprises deposition units corresponding in number to the number of drops to be deposited, each unit including a tubular needle 24 mounted in a common mounting plate 22, a vial 32 holding liquid 34, a capillary tube 44 connecting the vial and needle, and a reservoir 36. The apparatus is such that, when the needles are in their initial positions E 1  and E 2  are approximately equal. In operation, sensing of indicia (16) (Fig. 1, not shown) on the sheet by a photocell 20 stops advance of the sheet and effects operation of a fluid-actuated ram 33 to move the needles 24 towards, hold them at a distance from for a short period, e.g.  sec., and move them away from, recesses 14 in the sheet. During the downward movement a drop is formed at the tip of each needle. The drops engage the sheet when the needles are stationary, and return movement of the needles to their illustrated position detaches the drops from the needles. When the liquid level in a vial 32 drops below a thermistor 40 a solenoid operated diaphragm valve 38 is actuated to permit passage of liquid from reservoir 36 into the vial, and covering of the thermistor 40 results in de-activation of the valve 38. The reservoirs are each open to atmsophere via grooves in their caps 88. The liquid in each vial may be of the type which solidifies at room temperature and in this case the vials are heated to 115-150 F. The mounting plate 22 can be moved relative to block 71 upon turning an adjustment screw 77 so as to vary the distance E 1 . In a particular form of the apparatus the ram 33 performed each downward and upward stroke of 1#  inch in a time of # sec., the needles each had an inside diameter of 0À023 inch, and the capillary tubes each had an inside diameter of 0À034 inch.
Patent GB-712383-A (GB)
Title: Spark plug
Inventor: VOGEL HOWARD HENRY
IPC: H01T13/34
Filed: 1952-10-07
Abstract: 712,383. Sparking plugs. CHAMPION SPARK PLUG CO. Oct. 7, 1952, No. 25093/52. Class 7(4) In a spark plug having an insulator 3 with an axial bore 4 therethrough, a centre electrode 5 in the bore with its terminal connecting end spaced inwardly a predetermined distance from the corresponding end of the bore, a free space in the bore around the electrode terminal position, a thimble 9 on the electrode 5 with its outer end pressed into predetermined spaced relationship to the adjacent insulator end, and a terminal stud 11 in said bore 4 with its inner end in predetermined spark gap relationship to the thimble, the stud 11 is provided with a bore 15 extending from the spark gap 12 to atmosphere at the top of the stud to vent ionized air within the spark gap. The bore 4 is formed with a shoulder 6 against which abuts an enlarged part 7 of the wire electrode 5; the stud 11 is threaded into the bore 4 and retained in position with its flange 14 against the end surface of the insulator 3 by cement 13. Part of the space between the bore 4 and the electrode 5 is packed with a sealing and holding material 8.
Patent GB-190537-A (GB)
Title: Improvements in and relating to the manufacture of leaf springs
IPC: F16F1/20
Filed: 1921-09-23
Abstract: 190,537. Stott, J. H. Sept. 23, 1921. Addition to 188,428. Laminar springs.-Leaf springs constructed as described in the parent Specification have the leaves separated by rollers C carried on the tips, and by packing nieces A at the centre or end. The rollers may be replaced by bearing-pieces F, Fig. 5, and may have side pieces B to take the place of guiding ribs or slots. The bearing-pieces F may be recessed at G to carry lubricant, and the recesses may be connected to lubricators or grease gears.
Patent GB-1077439-A (GB)
Title: Novel vitamin-containing compositions
IPC: A61K9/20
Filed: 1966-06-07
Abstract: Vitamin A compositions, which may be directly compressed into tablet form, comprise (i) from 30-60% by wt. of a vitamin A ester in the form of a stabilised pharmaceutical powder and (ii) from 40-70% by wt. of either microcrystalline cellulose or a mixture of said cellulose and dicalcium phosphate or a mixture of said cellulose and tricalcium phosphate, the mixture of microcrystalline cellulose and dicalcium phosphate or tricalcium phosphate containing at least 35% by wt. of microcrystalline cellulose.  The vitamin A ester may be the acetate or palmitate.
Patent GB-1440700-A (GB)
Title: Random access data storage systems
IPC: G11B5/48
Filed: 1974-06-07
Abstract: 1440700 Disc recording and playback INTERNATIONAL BUSINESS MACHINES CORP 7 June 1974 [2 July 1973] 25351/74 Heading G5R Access for a transducer 48 to a selected disc surface in a rotating laminar stack of flexible discs 8 is obtained by inserting into the stack at the selected disc interface a blade 28 having an aerofoil surface on one side, the inserting movement including a minor component parallel to the axis of the stack with the aerofoil surface leading. An air film forms between the aerofoil surface of the blade and the adjacent deflected disc, and the blade may include channels 30, 28a for an additional air supply.
Patent GB-425681-A (GB)
Title: Improvements in or relating to means for vapourising liquid fuel for internal combustion engines
IPC: F02M31/18
Filed: 1934-03-16
Abstract: 425,681. Vaporizers. BANNER, V., Sandusky, Overnhill Road, Staple Hill, and VICKERS, I. W., and DAVIS, L. W. W., (trading as VICKERS AUTOMOBILE CO.), Clifton Terrace, Sion Road, Bedminster, both in Bristol. March 16, 1934, No. 25381/33. [Class 7 (iii)] Relates to means for enabling a petrol engine to be run on a heavier fuel. With inlet a and exhaust manifolds b an opposite sides of the cylinder block, the carburetter would normally be bolted to the flange c, but according to the invention it is bolted to a flange e on a short pipe f which projects from a tubular heat-exchanger g. This has tube plates h, j, Fig. 3,supporting tubes k through which exhaust gases from manifold b may be passed by tubes l, m. The shell of the exchanger is secured to an induction pipe d which extends over the top of the cylinder block, is enclosed in a jacket n and is jointed at q, Fig. 2, to a part leading to the induction passage a. A straight portion of this pipe d is provided with a helical baffle formed by two plates slotted and fitted together at right angles and then twisted. Exhaust gases are led to the jacket n by a pipe p, Fig. 3. Petrol may be admitted at u to facilitate starting. A cranked lever s pivoted to a stud t on jacket n permits of the throttle being actuated by the existing controls. In a . modification, the pipe from the heat exchanger is enclosed in an aluminium muff cast around the exhaust pipe.
Patent GB-987864-A (GB)
Title: Improvements in or relating to dynamic balancing machines
Inventor: BARRETT LEONARD HEBDEN
IPC: G01M1/04
Filed: 1960-07-21
Abstract: 987,864. Dynamic balancing apparatus. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 13, 1961 [July 21, 1960], No. 25383/60. Heading G1X. In a dynamic balancing machine, supports 3 for the work 4 to be balanced comprise bearings formed by balls 9 between upper and lower races 6 and each race has a groove 7 shaped so that the supports 3 tend to assume a central position due to gravity, while the lower races are mounted on carriers 5 through elastic pads 10 to ensure an even load distribution. The work 4 or its shaft, Fig. 1 (not shown), may be rotatably mounted in half bearings 8 or in whole bearings. To prevent the supports 3 from lifting due to tilting of the work 4, a cable 18 may be secured to supports 3 and to thrust bearings 21. An extension 11 to each support 3 normally floats freely between two set screws 12 to be clamped therebetween during loading and unloading. One screw 12 of each pair may be provided with an adjustable, spring urged pad 16 to engage extension 11 and damp the movement of the support 3.
Patent GB-1429873-A (GB)
Title: Air conditioning control system
IPC: F16K31/68
Filed: 1973-05-29
Abstract: 1429873 Valves BORG-WARNER CORP 29 May 1973 [7 July 1972] 25398/73 Heading F2V [Also in Division F4] A refrigeration system comprises a compressor 10, a condenser 12, a constant pressure expansion device 14, an evaporator 16 with a fan 17 for blowing air into a space to be cooled and a superheat regulating valve. Means, shown as a thermal bulb 52 and a capillary 50, are provided for establishing a control signal which is a function of the temperature of air within the controlled space and for applying the signal to the device 14. In use, for bringing down the temperature of a vehicle standing in the sun, diaphragm 40 will be pushed downwards allowing a high evaporator pressure and consequently a relatively quick drop in the car temperature. As the car reaches a normal temperature, the bulb pressure falls until a predetermined control point is reached and the evaporator pressure is at a point slightly above the temperature at which freezing may occur on the evaporator coils. The bulb 52, capillary 50 and the chamber 56 are filled with an expansible, halogenated hydrocarbon fluid having a pressure change in response to a temperature change between 145 to 75 F. of between 75 and 125% of the pressure change produced in the system refrigerant in response to a temperature change of between 55 and 28 F. Preferably, the expansible fluid is R-113 or R-11 and the respective refrigerant is R-12 or R-22.
Patent GB-829688-A (GB)
Title: Improvements in or relating to animal feed products
IPC: A23K1/16
Filed: 1956-08-22
Abstract: An animal feed product consists of a mixture of a major proportion of a meal and a minor proportion e.g. up to 10%, of a soapstock comprising the gums of a crude glyceride oil and the soaps resulting from the reaction between a non-volatile alkali and the free fatty acids of the oil.  Preferably a non-saponifying alkali is employed, such as soda ash in an amount not greater than three times the amount required to neutralize the free fatty acids which ensures that the gums of the oil are not degraded, and the meal and oil may be obtained from the same source material e.g. cotton seed or soya bean. Heating of the mixture of meal and soapstock to 100-120 DEG C for several minutes at least is sufficient to de-toxify the product. Complete-ration pellets may comprise a mixture of corn, alfalfa hay, soya or cotton seed meal and small amounts of soapstock and molasses. According to an example, to 100 parts of a desolventized, solvent-extracted cotton seed meal containing 0,41% free gossypol, there was mixed 3 parts of soda ash cotton seed soapstock containing 1,44% free gossypol in 15 parts of water.  After mixing in a closed, jacketed mixer for 15 minutes at room temperature, the temperature of the jacket was raised rapidly to 107-110 DEG C, the mixing being continued for 30 minutes.  The resultant feed product was found to contain 0,028% free gossypol.
Patent GB-601425-A (GB)
Title: Improvements in the attachment of projectiles to cartridge cases in fixed ammunitionrounds
IPC: F42B5/073
Filed: 1945-10-02
Abstract: 601,425. Ammunition. SANDERS, G. S., and SMITH, F. E. Oct. 2, 1945, No. 25641. [Class 9 (i)] High velocity projectiles having a skirt driving band are attached to a cartridge case by a sealing ring 4 which fits the chamber of the gun and is mounted on the end of the cartridge case 1. The sealing ring is screw-threaded externally to engage with the driving band 8 which may be integral with or attached to the projectile 9. The ring is mounted on the cartridge case by making its inner surface with a converging part 5, to fit the sharply necked part 2 of the cartridge case and a part 6 diverging from the part 5, the normal cylindrical end or lip 3 of the case being expanded to fit the part 6. On firing, the gas pressure inside the ring 4 and band 8 gives effective obturation between the rifling of the barrel and the band 8, the pull of the projectile 9 combined with the pressure transmitted from face 2 to face 5 causing the ring to straighten out the lip 3 so that the cartridge case is left behind, while the ring 4 remains attached to the projectile.
Patent GB-1500630-A (GB)
Title: Magnetically-controlled perforators
IPC: G06K1/02
Filed: 1975-06-17
Abstract: 1500630 Selective punching apparatus SIEMENS AG 17 June 1975 [25 July 1974] 25673/75 Heading B4B A magnetically-controlled tape perforator comprises punch and tape-feed mechanisms 1, 2 actuated by respective drive means which each comprise a rotary magnet 4 and a toggle lever 5 arranged to be moved by the magnet against the action of biasing spring 7, and wherein the toggle lever is arranged to pivot about a fixed pivot axis of rotation of the magnet. In operation, the magnet is energized by a signal in, e.g. an electronic teleprinter, thereby causing the toggle lever 5 to be moved against the action of the spring to operate either the punch 1 or the pawl of a ratchet feed mechanism; at the end of the stroke the toggle lever is returned to a respective stop 10.
Patent GB-206135-A (GB)
Title: Improvements in cores for steel castings
IPC: B22C1/00
Filed: 1923-10-15
Abstract: 206,135. Eckert, Opfelt, et Cie, Ges. Oct. 30, 1922, [Convention date]. Addition to 189,781. Core materials.-The core material described in the parent Specification is modified by the addition of calcined aluminium oxide. The Specification as open to inspection under Sect. 91 (3) (a) stated that the core may consist wholly of calcined aluminium oxide and a binding agent. The subject-matter does not appear in the Specification as accepted.
Patent GB-195589-A (GB)
Title: Improvements in or relating to wireless receiving sets
IPC: H04B1/20
Filed: 1922-09-22
Abstract: 195,589. Western Electric Co., Ltd., (Assignees of Craft, E. B.). March 30, 1922, [Convention date]. Receiving sets, construction of; thermionic amplifiers and detectors.-A receiving set for wireless or line telephony is combined with an electric phonograph so that an associated loudspeaker can be actuated from either source at will. The high and low tension for the valve receivers, and the microphone circuit of the phonograph, are all fed from a motor-generator set, Which. together with the other component parts, is housed in a single cabinet. When the switch 17, Fig. 1, is thrown to the left, incoming signals received upon the aerial 6, 7, 8, are passed through a detecting tube 11. and then in succession through lowfrequency amplifiers 15 and 22 to the loud speaker 23. Resistances 27 and 24 are inserted to stabilize the amplifiers, whilst the filaments 30, 29 and 28 are arranged in series so that the grid potentials are more negative on the last stages of the set owing to the progressive voltage drop. When the switch 17 is thrown to the right, the valves 11 and 15 are cut out of circuit and the loud speaker 23 is fed through the amplifier 22 with current derived from an electric phonograph reproducer B. This comprises two carbon-button microphones 62, 63 connected in push-and-pull relation across a stylus hollder 64 actuated by a phonograph record. A motor 31 energized from the house mains 33. drives a direct-current generator having a high-voltage shunt winding 34 which feeds the plates oil the valves through a potentiometer 45. A low-voltage shunt winding 35 supplies filament current to the three valves in series. It also feeds the microphone circuit through a conductor 38, filament 30, contact 61, the two parallel halves of the primary winding of transformer 66 to the microphones 62, 63 and back through conductors 67, 68. Filter circuits 53, 54, 55, and 56, 57, 58 may be interposed to keep cut commutator rippde or other noises from the amplifiers. The entire set is mounted in a single cabinet as shown in Fig. 3. The valves and control handles are supported on a single panel 76, whilst the loud speaker 23 and horn 91, together with the phonograph and its spring motor 90, are housed in the upper portion of the cabinet. The switches 32 and 17, Fig. 1, may be combined in a single control hardle 93, Fig. 3. The generator set is carried by springs 83, 84 in order to reduce undesirable vibration. Specification 142,115 is referred to.