baber/WOPTO huggingface dataset:
Patent GB-350688-A (GB)
Title: Improvements relating to hovers or rearing appliances for poultry
IPC: A01K31/16
Filed: 1930-05-17
Abstract: 350,688. Hovers. HAWKES, W. H., Blackminster Poultry Farm, Evesham, Worcestershire. May 17, 1930, No. 15180. [Class 5 (ii).] A rearing appliance for poultry comprises one or more perforated or apertured side panels adapted to form a side or sides, or to cover an opening or openings therein, and adapted to be turned down or arranged to form an inclined runway or runways for the entry or egress of the chicks. Vertical side walls 1 of a box-like hover have rectangular openings 2 which may be covered by panels 12 comprising wire-mesh covered metal frames 12a, the upper and lower members of which are formed by metal strips folded round metal rods the ends of which project to form trunnions 13, 14 adapted to engage in notches 16, 17 formed in flanges 15 on the side walls. A lamp 7, resting on a removable tray 8 supported by flanges on the side walls, projects through a circular hole 6 in the wire-mesh floor of the hover, which floor is removably supported on flanges 3. The opening 6 is surrounded by a metal ring 10 which supports a metal lampguard 11, the upper part of which is perforated and carries a perforated deflector-plate 25. Cross-bars 5a help to support the mesh floor and lamp guard. Double curtains 18 removably suspended by rods 19 cover the openings 2, having slits for the chicks to pass through. A double-walled pyramidal canopy 22 with fixed and adjustable ventilators 28, 26, fits into the top of the side walls by flanges 23 and may be propped open by stays 24 foldably mounted in the top of one side wall. Further ventilation is provided by holes 29 in three of the walls and by the perforations in the sidepanels. In severe weather, one or more of the perforated side panels may be replaced by sheet-metal panels. In modifications, the perforated panels may themselves form the hover sides, or they may be hinged to a base on which the body of the hover may be supported.
Patent GB-790063-A (GB)
Title: Method of epoxidizing esters of unsaturated fatty acids
IPC: B01J31/08
Filed: 1955-05-26
Abstract: An ester of a water-insoluble olefinically unsaturated monocarboxylic aliphatic acid is epoxidized by reacting said ester at a temperature from about 10 DEG  C. to the boiling-point of the reaction mixture, preferably 20-80 DEG  C., with an aqueous mixture having a pH of at least 0.5 and containing hydrogen peroxide, acetic anhydride and a basic or substantially neutral, catalyzing, ionizable salt of a metal of Group Ia or IIa of the Periodic Table, said hydrogen peroxide being employed in an amount equivalent to at least one mol., preferably one to two mols., for each double bond in each mol. of said ester, and said acetic anhydride being employed in an amount equivalent to about 0.6 to 2 mols., preferably 0.8 to 1.2 mols., for each double bond in each mol. of said ester and said salt being employed in an amount equal to at least 0.5 per cent, preferably 3 to 8 per cent, based on the weight of said hydrogen peroxide.  Typical of the salts used are the acetates and nitrates, of sodium, potassium, lithium, calcium and barium; the sulphates of sodium, potassium and lithium; the phosphates, fluorides, chlorides, bromides, borates and fluoborates of sodium and potassium; the formates, oxalates, tartrates, citrates and chloroacetates of the alkali metals.  The hydroxides, oxides, carbonates and bicarbonates of the metals of Groups Ia and IIa can also be used.  Cation exchange resins in the salt form can also be used, resin containing carboxylate groups being preferred.  Suitable starting materials are esters of oleic, linoleic, linolenic, undecylenic, myristolenic, palmitolenic, petroselic and erucic acids with ethyl, propyl, n-, sec.- and t-butyl, t-amyl, n-octyl, 2-ethylhexyl, octadecyl, lauryl, cyclohexyl and benzyl alcohols; ethylene glycol, 1,2 - propylene glycol, 2 - ethylhexandiol - 1,3, butandiols, dodecandiol-1,12, di- and triethylene glycols, glycerol, and pentaerythritol. Esters of mixed alcohols and mixtures of esters may be used as well as semi-drying and drying vegetable oils including soybean, corn, cottonseed, safflower, sunflower, sesame, poppyseed, walnut, peanut, linseed and perrilla oils.  On completion of the reaction, the reaction mixture is separated into an aqueous phase and an organic phase, if desired with the addition of a water-immiscible solvent for the epoxidized ester, e.g. toluene. The ester phase is then washed with sodium bicarbonate solution and water and stripped by distillation.  Examples describe the epoxidation of (1) soybean oil using as catalysts sodium acetate, sodium formate, potassium sulphate, potassium nitrate, borax, disodium hydrogen phosphate, potassium chloride or the sodium salt of an acrylic acid-divinyl benzene ion exchange resin; (2) cottonseed oil in toluene using sodium nitrate and acetate as catalyst; (3) safflower oil with sodium acetate as catalyst; (4) hexyl oleate with potassium nitrate as catalyst.  The products are suitable as plasticizers and stabilizers for vinyl chloride polymers and chlorinated rubber.
Patent GB-388730-A (GB)
Title: Circuit arrangements for gas-filled thermionic valves
IPC: H04B1/22
Filed: 1931-05-22
Abstract: 388,730. Valve amplifying circuits. DUBILIER CONDENSER CO. (1925), Ltd., Victoria Road, North Acton, London.- (Assignees of' Linke, J. ; 65, Niebuhrstrasse, Charlottenburg, Berlin.) May 22, 1931, No. 15234. Convention date, May 22, 1930. [Classes 39 (i) and 40 (v).] A radio receiving and amplifying circuit for unheated cathode valves having an auxiliary anode in addition to the normal anode and control electrodes is provided with means to control the potential of the auxiliary anode. A transformer C, D is connected to the control grid and between the main and auxiliarv anodes as described in Specification 303,371, [Class 39 (i), Electric lamps, Arc &c.], and resistances, condensers or chokes are provided in the circuit of the auxiliary anode and a condenser may be provided in parallel with the winding C of the transformer. A resistance I may be included in the output circuit, or the dotted connection L be provided to facilitate the functioning of the main arc. The Specification as open to inspection under Sect. 91 comprises also modifications in which the control electrode is dispensed with and the input is applied to the auxiliary anode and also describes arrangements with heated cathodes. This subject-matter does not appear in the Specification as accepted.
Patent GB-620494-A (GB)
Title: Improvements in linear polyesters
IPC: C08G63/181
Filed: 1946-05-20
Abstract: Linear polyesters are prepared by condensing together a glycol (or the formate or acetate thereof) in which the two hydroxy groups are linked by a linkage consisting of carbon atoms attached to carbon or to hydrogen and containing no ethylenic or acetylenic unsaturation but including at least one carbon atom carrying less than two hydrogen atoms, with a dicarboxylic acid (or its acid chloride or simple ester) in which the carboxy groups are linked to one or more aromatic nuclei and the linkages are separated by at least four nuclear carbon atoms in each aromatic nucleus.  Suitable glycols are 1,2-propylene glycol; 1,3-butane diol; 2,4-hexane diol; 1,4-xylylene glycol; 1,4-di-(b -hydroxyethyl)-benzene and 1,4-di-(\su-hydroxypropyl)-benzene.  Suitable acids are 4,41-dicarboxydiphenyl; p - phenylene - diacetic acid; terephthalic acid; 2,5-dichlorterephthalic acid; 2,6-dimethyl terephthalic acid; 4,41-dicarboxydibenzyl; 4,41-dicarboxydiphenylsulphone; and 4,41 - dicarboxy - 3,31 - dimethyldiphenyl.  The reactants are heated at 100-350 DEG  C.  Catalysts, e.g. p-toluene sulphonic acid, phosphoric acid, potassium carbonate, alkali metals or alkali metal alcoholates may be employed.  The pressure may be reduced especially in the later stages of the reaction.  An oxygen-free atmosphere may be maintained, e.g. by passing hydrogen or nitrogen through or over the reaction mixture.  When using an acid chloride, an inorganic alkali, tertiary organic base, e.g. pyridine or dimethylaniline or a terpene may be added to combine with liberated hydrochloric acid.  Preferably, the reactants are molten or dissolved in phenol or m-cresol.  The hydroxy and carboxy groups are preferably present in substantially equivalent proportions and the reaction carried on until products of high molecular weight for films or filaments are formed.  In the examples: (1) dimethyl terephthalate was heated with p-xylylene glycol in presence of lithium methoxide and magnesium ribbon; (2) diphenyl-4,41-dicarboxylic acid diethyl ester was heated with 1,2-propylene glycol in presence of sodium methoxide and magnesium ribbon.
Patent GB-118724-A (GB)
Title: Improvements in Brakes for Cycles.
Inventor: GRIFFIN EDGAR FRANCIS
IPC: B62L3/02
Filed: 1917-10-22
Abstract: 118,724. Griffin, E. F. Oct. 22, 1917. Brake mechanism.-In a footoperated rear-wheel rim brake for cycles, adapted to be applied from either side of the machine, two similar foot-levers, one on each side of the cycle frame, are rigidly united at the foot-operated end by a cross-member, which may be a foot-plate, and are connected to the yoke bridge at points substantially in line with the yoke limbs. As shown, bell-crank levers G, pivoted at H to a clamp upon the lower end of the saddlepillar tube B, carry a foot-plate I disposed between the pillar tube and the mud-guard, the lower arms of the levers being connected to the bridge of the yoke E, which is normally held in inoperative position by springs F. The levers may be rigidly united by other means than the footplate and the upper ends of the levers curved outwardly for operation by the feet According to the Provisional Specification, at the front end the yoke is provided with a pivot, to which the operating-lever is attached, either directly or through a short link.
Patent GB-772574-A (GB)
Title: Separation of mixtures of pentaerythritol and dipentaerythritol
IPC: C07C43/13
Filed: 1955-05-27
Abstract: Pentaerythritol is recovered from an aqueous solution containing pentaerythritol and dipentaerythritol by a process comprising taking the solution round a cycle which consists of evaporating water from the solution in an amount such that substantially only pentaerythritol crystallizes out, separating the resulting pentaerythritol crystals, so diluting and cooling the solution that substantially only dipentaerythritol crystallizes out, and separating the resulting dipentaerythritol crystals, the ratio of pentaerythritol to dipentaerythritol being at least 3:1 by weight at the commencement of the evaporation step.  The crystals of pentaerythritol may be separated intermittently or continuously from the solution during the boiling operation.  Sufficient water is added and the solution is cooled to such an extent that preferably the diluted and cooled solution is substantially saturated with both pentaerythritol and dipentaerythritol.  Preferably the diluted solution is cooled to 60-70 DEG  C.  The solution left may be subjected to recycling, preferably with the addition of more feedstock.  The mixture of pentaerythritol and dipentaerythritol used as starting material may be obtained by the reaction of formaldehyde and acetaldehyde in the presence of a basic catalyst.
Patent GB-593867-A (GB)
Title: Improvements in equalizers for cable operated controls
IPC: B64C13/30
Filed: 1945-06-18
Abstract: 593,867. Bowden mechanism. BROUSE, W. H. D. June 18, 1945, No. 15441. [Class 80(iii)] [Also in Group XXXIII] Bowden control mechanism particularly for operating the flaps of an aircraft comprises a control unit 1 embodying a differential gear, and actuating devices 7, 11 on the two wings of the aircraft for flap operating units 9, 13 which are connected by a single cable passing through guide tubes 6, 10, 14, the ends of the cable then passing through further tubes 15 and 17 to the rear flap. In the control unit 1 the cable 2 which is of the type having a uniformly spaced spiral wire 3 wound thereon, passes around the peripheries of toothed wheels 5, 24 secured respectively to the side bevels 23, 25 of a differential gear which is driven by pinions 30 on a spider 29 on a manually operable shaft 26. The differential compensates for varying expansion and contraction of the cables and guide tubes due to changes of temperature and equalises the tension and compression loads. Initial threading of the cable through the differential gear and adjustment thereof is effected by reversing bushing 28 of the operating handle which locks the side bevel 25 to the shaft 26 so that both wheels 5, 24 can be turned together to draw the cable through.
Patent GB-616178-A (GB)
Title: Improvements in projection printer
IPC: G03B27/46
Filed: 1946-05-22
Abstract: 616,178. Projection printers for kinematograph films. TECHNICOLOR MOTION PICTURE CORPORATION. May 22, 1946, No. 15492. Convention date, Nov. 2, 1945. [Class 98 (i)] In a kinematograph projection printer, wherein negative and positive blank films are fed continuously to opposite sides of an endless carrier having teeth which engage in the film sprocket holes and means are provided for projecting images of the negative film across the orbit of the carrier to the positive blank, the films are removed from the carrier at points several frames past the exposure gate to avoid film flutter due to intermittent slippage of the .film on the carrier. As shown, a negative film 2 and a positive film 3, the apparatus for the latter being indicated by dashed numerals, are fed from pay-out reels 4, 4<1> to and from opposite sides of a drum 1 having teeth adapted to engage in the film feed perforations, each film being guided in the same way. The negative film passes from the reel 4 under a guide roller 5, over a sprocket 6, then under a gravity-operated tensioning roller 7 to a roller 8 which seats it on the drum, from which it is led off around a roller 9 to pass between a roller 10 and sprocket 11 to a take-up reel 12. The teeth are smaller than the feed perforations which they have to enter, and the roller 9 for the negative film is adjustable around the drum by being mounted on an arm pivoted on the drum axis, so that the leading side of the teeth nearest the roller 9 may engage the leading edge of its sprocket hole while the trailing side of the teeth nearest the roller 8 engages the trailing edge of its sprocket hole, whereby the maximum possible length of film is accommodated on the drum without tearing the perforations. Film flutter is avoided by leaving several frames between the projection and printing gates and each of the seating rollers 8, 9, 8<1>, 9<1>. A motor drives the drum shaft directly, and a gear-wheel thereon engages a worm on a cross shaft which drives by means of bevel gears two shafts arranged at right angles to both the cross shaft and the drum shaft which drive the sprockets 6, 11, 61, 11<1> through worm gears. A mechanical filter is included in the main drive from the motor to avoid modulation effects on the printed sound track caused by the meshing of gears or of sprockets with the film. Only one row of film perforations are engaged by the toothed drum which is narrower than the film so that the sound track margin of each film projects beyond it across the optical axis 25 to permit the sound track on the negative to be projection-printed onto the positive by means of light source 26, condenser 27 and copying lens 28. Specification 616,179 is referred to. The Specification as open to inspection under Sect. 91 refers also to the use of an endless belt or belts, each belt being less than the width of the film, or of a single belt divided down the middle to provide a slot through which light may pass. This subject-matter does not appear in the Specification as accepted.
Patent GB-615347-A (GB)
Title: Improvements in and relating to moulded hermetically sealed containers
IPC: H01R13/52
Filed: 1946-05-22
Abstract: 615,347. Piezo-electric crystal mountings. GENERAL ELECTRIC CO., Ltd., FIELDING, E. A., ROLLIN, L., and THORN, S. May 22, 1946, No. 15496. [Class 40 (v)] [Also in Group V] A hermetically sealed container for a piezoelectric crystal comprises a casing 10 moulded from plastic material, preferably polyethylene or polystyrene, and having an opening, the edges of which are chamfered at 11 to an angle 12 of 45- 60 degrees. Within the opening is mounted a plate 14 of insulating material, preferably of glass-bonded mica, and chamfered to mate with the chamfer on the casing. The crystal is mounted on the plate 14 which is traversed by the necessary conductors 15. Over the plate 14 is a covering 16 of plastic material formed by an injectionmoulding process which is preferably arranged so that local melting of the casing 10 occurs to ensure perfect bonding with the cover. The injected material is preferably the same as that from which the casing is made. The conductors 15 have collars 17 to bond with the cover 16. The casing is initially shaped as indicated by the dotted line. In a modification, the casing 10 terminates initially in the immediate neighbourhood of the chamfer 11 instead of continuing beyond as at 13.
Patent GB-999656-A (GB)
Title: Improvements in or relating to spark-gaps
Inventor: JACQUOT BERNARD
IPC: H01T1/00
Filed: 1963-04-19
Abstract: 999,656. Gaseous flow silencers. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 19, 1963 [April 20, 1962], No. 15536/63. Heading F1B. [Also in Division H1] Hot air produced in discharging an electrical condenser bank across the free-air spark gap 14, 15 is silenced by passing through the perforated tubes 24, 25 into the expansion chamber 9, and hence to atmosphere.
Patent GB-128584-A (GB)
Title: Improvements in Multi-stage Turbines.
Inventor: PIDWELL ARCHIBALD WILLIAM
IPC: F01D1/02
Filed: 1919-06-20
Abstract: 128,584. Pidwell, A. W., and Du Saussois, A. M. J. M. June 18, 1918, [Convention date]. Circular-flow type; reversing; motor power plant.-A reversible circular-flow turbine having a number of concentric stages comprises a onepiece rotor c formed with concentric rings of budgets d<1>, d<2>, d<3> located between two casing parts a, b having recesses o<1>, o<2>, 0<o>. The rotor c and casing members a, b are formed as shown in Fig. 3, one side being used for forward working and the other for reverse working. Motive fluid is admitted by inlets g to and round the innermost ring of buckets d' and recesses o<1>, and passes to the outer rings successively. The turbine may be used as a silencer and an auxiliary motor on motor-cars by discharging the exhaust gases therethrough. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the non-reversible modification shown in Fig. 3 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-696927-A (GB)
Title: Improvements in or relating to lamp mountings for optical projectors
IPC: G03B21/20
Filed: 1951-07-02
Abstract: 696,927. Optical -- projection apparatus. STEATIT-MAGNESIA AKT.-GES. July 2, 1951 [March 24, 1951], No. 15643/51. Class 97 (i). [Also in Group XI] A lamp is mounted in a socket surrounded by a collet pivoted at two points of a yoke rigidly connected to rod rotatable about a horizontal axis and perpendicular to the line joining the two points. As shown, the socket 2, with the lamp 1, is clamped by a screw 4 in a collet 3 to provide vertical adjustment. The collet is rotatable about an axis A-A in a yoke 5 in which it may be clamped by a screw 7. The yoke is secured to a rod 8 rotatable and axially adjustable in a bushing 9 in which it may be clamped by a screw 10. An adjusting knob 14 is carried at the end of a rod 13 secured to a clip 12 encircling the lamp socket.
Patent GB-547217-A (GB)
Title: Improvements in or relating to heat treatment of aluminium base alloy castings
IPC: C22F1/057
Filed: 1940-10-25
Abstract: 547,217. Heat-treating aluminium alloys. NATIONAL SMELTING CO. Oct. 25, 1940, No. 15721. Convention date, Dec. 6, 1939. [Classes 72 and 82 (i)] In the heat-treatment of aluminium base alloy castings, the latter are removed from the mould after pouring, quenched while they are still hot enough to. have a substantial quantity of the hardening ingredients in solid solution heated to the solution temperature and again quenched. The casting is removed from the mould before it has cooled below 850‹F. and the quenched casting is heated to between 850‹F. and the melting point of the lowest melting eutectic of the alloy preferably to between 850‹F. and 1050‹F., the heated casting being maintained at that temperature for sufficient time, e.g. 15 minutes to 3 hours, to obtain a more uniform solid solution of the hardening ingredients. The casting, after quenching may then be aged preferably above room temperature and below 450‹F. In an example an alloy containing 4 per cent. of copper, 2 of silicon, 1 of iron and 0.5 of zinc was quenched from the mould, heated for 1¢ hours at 950‹F., quenched in hot water and aged for 8 hours at 212‹F.
Patent GB-355336-A (GB)
Title: Improvements in thermionic valves
IPC: H01J1/22
Filed: 1930-05-22
Abstract: 355,336. Thermionic valves. LISSEN, Ltd. and RICHARDSON, R. P., Worple Road, Isleworth, Middlesex. May 22, 1930, No. 15779. [Class 39 (i).] Indirectlyheated cathodes of triodes, tetrodes, pentodes, &c. have a heating filament divided into equal, straight, parallel and adjacent parts 1, 2 threaded through the cathode 4, the divided ends being brought out to additional external terminals. The parts 12 pass through a stealite or porcelain insulator 3 and have their left-hand ends connected to two pins on the cap 10 and their other ends to terminal screws 8, 9. In radio circuits, an accurate mid-point of the filament is obtained as a tapping 12 on a resistance 11 between the screws 8, 9, or the screws 8, 9 may be directly connected or may be so connected to the pins that the filaments 1, 2 are in parallel. The ends of the filaments connected to the screws may be at opposite ends of the cathode.
Patent GB-1009705-A (GB)
Title: Cylindrical beam cathode ray tube
Inventor: FRYKLUND ROBERT ALDEN
IPC: G01S7/62
Filed: 1962-04-25
Abstract: 1,009,705. Cathode-ray tubes. RAYTHEON CO. April 25, 1962, No. 15808/62. Heading H1D. [Also in Division H4] A cathode-ray tube for the simultaneous display of signals received from all directions in underwater sound-echo ranging equipment comprises cathode 5 and electrode 10 producing a hollow cylindrical electron beam and a circular array of individual radial control wires 13 to suppress or permit the passage of different elements of the beam. The wires 13 are supported between mica rings 11, 12, the inner edge of ring 12 being notched. The ranges of the signals are indicated by applying a sawtooth sweep voltage to the conical deflection plates 18, 19, thus causing the beam slowly to expand periodically. The structure also includes a focusing anode 14 formed by concentric sleeves 15 and a similar accelerating anode structure 17. The electrode 10 which may be D.C. biased to suppress the beam may be omitted and the hollow beam may be developed from a point source.
Patent GB-990260-A (GB)
Title: Preselector mechanism for a machine tool
IPC: B23Q17/00
Filed: 1962-04-25
Abstract: 990,260. Speed controlling and indicating; machine tool details. OKUMA MACHINERY WORKS Ltd. April 25, 1962 [Feb. 19, 1962], No. 15833/62. Headings B3B and B3C. In a machine tool, such as a drilling machine, a preselector mechanism is operated in conjunction with an indicator plate 2 and a dial plate 6. The dial plate carries markings of cutting data and is secured to the machine frame. The indicator plate is operatively connected to the shaft 1 of the preselector mechanism and is rotatable by a hand grip 5. The setting of the index dial automatically sets the preselector mechanism of the machine to effect the required speeds and feeds.