baber/WOPTO huggingface dataset:
Patent GB-900637-A (GB)
Title: Apparatus for separating or winnowing tobacco and other like fibrous materials
IPC: A24B5/10
Filed: 1958-10-16
Abstract: The subject-matter of this Specification is included in Specification 900,635 but the claim is concerned with apparatus for separating tobacco or other fibrous material by means of an air stream in which the air is continuously circulated and the material separated or winnowed by means of an upwardly moving air stream passing from the base to the top of a separating chamber, and a heating device is provided for warming the circulating air and a moistening device is provided for moistening the air. Specification, 900,636, also is referred to.
Patent GB-1020447-A (GB)
Title: Obtaining a commercially useful product from egg-shells
Inventor: HARVEY HENRY GUY
IPC: C01F11/18
Filed: 1962-03-06
Abstract: Calcium carbonate is obtained from freshly broken egg-shells by washing the shells to remove egg-white and yolk therefrom, germicidally treating the shells, then washing to remove any germicidal odour therefrom optionally drying, then immersing the shells in a hot alkaline solution to effect solution of the membrane, removing the solution, washing the shells (the washing including treatment with acid) to remove all traces of alkali therefrom, and finally drying the shells quickly to prevent bacteriological and enzymatic changes therein.  The removal of the egg white and yolk may be achieved by centrifugal washing and drying coupled with an intermediate treatment with a suitable germicide such as sodium hypochlorite or hydrogen peroxide.  The shell is rapidly dried at preferably 180 DEG  F. to 210 DEG  F., preferably for 15 to 30 minutes.  The dry sterile egg-shell is immersed in a hot solution of a weak alkali and/or alkaline salts, e.g. NaOH, to effect complete removal of any remaining trace of egg-white and solution of the egg-shell membrane.  Any entrained alkali is removed by water washing and the use of a low concentration of a mild acid such as acetic acid, and a final removal of occluded odours may be effected by using a mild oxidizing agent such as sodium hypochlorite or hydrogen peroxide. The treated egg-shells may be stored, or finely ground. Grinding may be either by wet grinding in the presence of a low concentration of a mildly acetic substance, e.g. acetic acid, or of a low concentration of an oxidizing agent, e.g. sodium hypochlorite, or by dry grinding to achieve particle sizes of mostly below 20 microns. A combination of both types of grinding may be used.  The powder product may be used to replace creta-preparata as a nutritional supplement of calcium in flour as used for bread-making and other food purposes.  In admixture with various powdered forms of calcium carbonate in suitable proportions, the powder confers "free-running" properties not possessed by other powder forms of calcium carbonate by themselves.  Such free-running mixtures may be used as a nutritional supplement in flour, and also in the preparation of toothpastes and powders, and cosmetics.  The powder may also be used as lubricants and as fillers.  Reference has been directed by the Comptroller to Specification 790,073.ALSO:Calcium carbonate from waste egg-shells (see Division C1) may be mixed with various powdered forms of calcium carbonate to confer "free-running" properties not possessed by the powder forms of calcium carbonate by themselves and the mixture may be used in the preparation of toothpastes powders, and cosmetics.  Reference has been directed by the Comptroller to Specification 790,073.
Patent GB-506090-A (GB)
Title: Improvements in and relating to electric converting systems
IPC: H02M3/31
Filed: 1938-03-21
Abstract: 506,090. Converting. BRITISH THOMSON-HOUSTON CO., Ltd. March 21, 1938, No. 8702. Convention date, March 20, 1937. [Class 38 (ii)] In an arrangement for interchanging power between D.C. circuits 10, 11 comprising a transformer having primary windings 16, 17, 21, 22, 26, 27 and secondary windings 18, 19, 23, 24, 28, 29 connected respectively to the D.C. circuits through discharge devices 47 .... 52 and 53 .... 58 which transmit current impulses of rectangular wave form, a static source of magnetizing current for the transformer is provided comprising tertiary windings 20, 25, 30 connected to condensers 59, 60, 61. The conductivity of one of the groups of valves, or (if the arrangement is to transmit power reversibly between the two D.C. circuits) both groups of valves, is controlled by alternating potentials applied to their grids from a source 62. Similarly, either one or both of the valve groups is supplied with commutating potentials by condensers 39 .... 44 associated with windings 33 .... 38 in series with the main transformer windings. A single condenser may be used to supply commutating potentials to two or four of the valves through appropriate transformer couplings, Figs. 2, 3, and 4 (not shown).
Patent GB-1244229-A (GB)
Title: Brake assembly for a railway truck
Inventor: MCLEAN LEONARD ANSON
IPC: B61H1/00
Filed: 1969-02-18
Abstract: 1,244,229. Brake-applying arrangements; brake shoes. AMSTED INDUSTRIES Inc. 18 Feb., 1969, No. 8730/69. Heading F2E. In a brake assembly for a railway truck, including a metal bracket comprising elongated plates 14, 16 adapted to be rigidly secured to the touch via a stop plate 12, each plate 14, 16 has a laterally extending portion 50, 50<SP>1</SP> (Fig. 2) provided with a downwardly extending flange 52, 52<SP>1</SP> and the flanges 52, 52<SP>1</SP> of the plates 14, 16 are spaced with a slack adjuster 70 located between and secured to the spaced flanges 52, 521. The stop plate 12 is secured to the diesel locomotive truck frame 90 and is welded at an end of a spring plank safety strap 32, 34. The brake shoe and block 108, 109 is attached to levers 110, 112 which are pivoted at 116. To apply the brake pressurized air is applied to pneumatic cylinder 72 to move piston-rod 76 outwardly. This operates via lever 82 and U-links 94, 96, a brake lever 62 which pivots about a bolt 102 attached to the slack adjuster 70. The movement of the brake lever 62 acts on the brake shoe 108 to apply the brake to the truck wheel. The shook adjuster 70 is adjusted by removing bolt 104, moving adjuster element 100 from between the flanges 52 so that the threaded joint between elements 10 and 98 of the slack adjuster 70 can be altered before reassembling with bolt 104. By using a composition brake block 109 a conventional claw-type brake arrangement having two brake shoes can be replaced by a single brake assembly having a single brake shoe. Brake shoe.-The brake block 109 may be of composition type using non-metallic materials such as consisting predominantly of rubber, asbestos and other components possessing a much higher coefficient of friction, when in contact with steel wheels, than cast iron shoes.
Patent GB-679677-A (GB)
Title: Improvements in or relating to pyrazolidones
Inventor: KENDALL JOHN DAVID
Filed: 1950-04-06
Abstract: 3-Pyrazolidones are obtained by hydrolysing 3-aminopyrazolines (or 3-iminopyrazolidines) of the formula <FORM:0679677/IV (b)/1> (which may be obtained as in Specification 679,678); R1 is alkyl, aryl, aralkyl or corresponding substituted groups and R2, R3 and R4 are hydrogen, alkyl, aryl, aralkyl or corresponding substituted groups; hydrolysis is effected with a non-oxidizing acid such as sulphuric, hydrochloric, hydrobromic, phosphoric, acetic or p-toluene sulphonic. The aminopyrazoline may be heated with an exact equivalent of dilute aqueous acid, or alternatively an aqueous solution of the acid salt of the aminopyrazoline may be heated.  Examples show the production of the following substituted 3-pyrazolidones: 1-phenyl, 1-p-chlorophenyl, 1-p-tolyl, 1 : 5-diphenyl, 1-m-tolyl, 1-phenyl-4- and 5-methyl and 1-m- and p-tolyl-5-phenyl.
Patent GB-1124513-A (GB)
Title: Improvements in or relating to method for the manufacture of chipboard and apparatus for carrying out this method
IPC: B27N3/20
Filed: 1966-02-28
Abstract: 1,124,513. Moulding chip-board. E. SCHNITZLER. 28 Feb., 1966 [30 Dec., 1965; 11 Jan., 1966], No. 8778/66. Heading B5A. In a method of making chip-board in which a chip-binder mixture is first pre-pressed at a low temperature and then finally pressed at a high temperature a single press is used, heat insulating inserts being provided between the press-plates and the working material during the pre-compression step and being removed during the final compression step. In the embodiment shown in the Figure a chip blank is formed upon a lower insulating plate 6 and is forwarded into the heated press 2, 3 together with an upper insulating plate 5, which plate is reciprocable along rails 4. The press is then closed to effect a cold compression of the blank reopened to allow removal of the plates 5 and 6 and finally reclosed to completely press and cure the blank.
Patent GB-362289-A (GB)
Title: Improvements in or relating to vulcanising presses
IPC: B29C35/00
Filed: 1931-03-21
Abstract: 362,289. Vulcanizing-presses. SIEMPELKAMP, E., 69, Hohenzollernstrasse, 'Krefeld, Germany. March 21, 1931, No. 8788. [Class 70.] In vulcanizing-presses having hot-plates i, k between which the article is pressed by a rising table h, the lower part of the table h, and if desired, the upper part of the transverse beam d are heated, for example, by tubes l, to preserve uniformity of temperature therein, and minimize risk of buckling.
Patent GB-435019-A (GB)
Title: Improvements in or relating to rotary tool devices for operating on the ends of piston rings
IPC: B25B27/12
Filed: 1935-03-21
Abstract: 435,019. Grinding. SPARK, M. A. M., 31, Mealmarket Street, Aberdeen. March 21, 1935, No. 8853. [Class 60] [See also Group XXII] A grinding wheel, for operating on the ends of piston rings, is mounted for angular adjustment on a body part adapted to be fixed to a support and having a flat upper face whereon the ring is placed flat against a gauging abutment which is adjusted by means of graduations on the said upper face. The body portion 1 has a clamp 20 at one end for fastening it to a support, and at its other end an angularly adjustable tool holder is arranged, adapted to be clamped in set position by the handle 11. A grinding-wheel 8 is carried at the end of a hand or motor-driven spindle the axis of which intersects the centre-line of the ring-supporting plate 2 in all positions of adjustment. A stop 16 for the ring 3 is adapted to be moved in a slot across the supporting plate, the latter having graduations which indicate the cylinder bore for which the ring to be cut is suitable.
Patent GB-758861-A (GB)
Title: Improvements in cathode-ray information stores
IPC: H01J31/60
Filed: 1954-03-26
Abstract: 758,861. Electron beam apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 26, 1954 [March 30, 1953], No. 8925/54. Class 39 (1). [Also in Group XIX] A cathode-ray tube information store has a screen consisting of a large number of independent storage units separated from each other by conductive areas, the signals delivered each time the beam traverses a conductive area serving to step up a recording voltage which is compared with a preselected magnitude; the beam is arrested when equality is detected and this enables the reading in or out of information at the selected storage unit. The storage screen 8 consists of a metal backing provided with equally spaced, tiny apertures 12, each about 0.0006 inch square. The edges of each aperture are coated with a dielectric material such as calcium-, barium-, or lithium-fluoride, magnesium oxide, &c., and these " islands " of dielectric on the conductive backing form the information-storage elements. Writing-in of information is performed while the cathode 3, storage screen 8, and collector 9 are subjected to potentials indicated by dotted lines in Fig. 3. The storage screen is considerably more positive than the collector and, by suitably modulating the control grid 4, selected dielectric " islands " can be charged towards the potential of the cathode which is ten to twenty volts negative with respect to the metal backing of the storage screen 8. To read out information the potentials indicated by full lines are applied to the electrodes. The collector 9 is now the most positive electrode and the screen 8 is considerably more negative than the cathode. Thus, when the electron beam is directed through a selected aperture it is modulated in accordance with the charge on the dielectric surrounding the aperture without affecting the state of that charge. The resulting signal is picked up by a plate 10. Locating the storage element. The horizontal location of a required element is set up as a precise, previously-calibrated voltage. This is continually being compared with the stepped voltage output of a device which integrates the pulses picked up by the metal backing of the storage screen 8 as the beam passes between the storage elements, and when agreement is reached, the horizontal displacement of the beam is held while a vertical scan proceeds in a similar manner until the required storage position is reached.
Patent GB-1079553-A (GB)
Title: Compositions for dyeing keratinic fibres
Inventor: CHARLE ROGER
IPC: A61Q5/10
Filed: 1965-03-02
Abstract: Composition for use in dyeing keratinic fibres comprises at least one p-diamine of the general formula:-  <FORM:1079553/D1-D2/1> in which X and Y which may be the same or different each represents hydrogen, halogen, alkyl or alkoxy and at least one coupler of the formula:- <FORM:1079553/D1-D2/2> in which R1 is -OCH3 in the 4-position and R2 represents H, -CH3 or -NHCOCH3 in the 2-position, or R2 represents H or -CH3 in the 6-position and R1 in the 3-position is represented by:-  -CH3, -OCH3, -NHCOCH3 -NHCH2 CONH2, -NHCH2CON(C2H5)2, -NHCOCH2N (CH3)2 or -NHCOCH2N(C2H5)2, or R2 represents -CH3 in the 6-position and R1 represents a halogen in the 3- or 5- position; or of the formula:-  <FORM:1079553/D1-D2/3> in which R3 and R4 are both -CH3 or R3 represents -CH3 and R4 represents -OC2H5, or R3 represents phenyl and R4 represents:-  <FORM:1079553/D1-D2/4> or <FORM:1079553/D1-D2/5> or  or of the general formula:-  <FORM:1079553/D1-D2/6> in which: Z represents a phenyl, 3-sulphophenyl, 4-sulphophenyl or 2-chloro-5-sulphophenyl radical, the molar ratio of p-diamine to coupler being less than 1.  Many diamines and couplers are specified.
Patent GB-847105-A (GB)
Title: Neutral bis-dithiophosphoric acid esters and process for their manufacture
Inventor: SCHERER OTTO
IPC: C07F9/165
Filed: 1957-03-19
Abstract: The invention comprises bis-dithiophosphoric acid esters of the general formula: (R1O)(R2O)P(S) SCH2 O(CH2)n OCH2 SP(S) (OR3)(OR4) in which R1 to R4 each represent an alkyl or alkenyl group containing 1 to 4 carbon atoms and in which n is a whole number from 1 to 10. They may be obtained by reacting an appropriate O,O-dialkyl or O,O-dialkenyl dithiophosphoric acid or metal salt thereof with an appropriate ether of the formula: Z CH2 O(CH2)n O CH2 Z in which the Z's represent halogen atoms.  An example is given for the production of bis-(O,O-diethyl-dithiophosphoryl)-1:4-butylene glycol dimethyl ether.  The products have pesticidal properties (see Group VI).ALSO:A pesticidal composition comprises as active ingredient a dithiophosphoric acid ester derivative of the formula: (R1O)(R2O)P(S) . SCH2 . O . (CH2)n . O.CH2 . S . P(S)(OR3)(OR4) in which R1 to R4 each represent an alkyl or alkenyl group containing 1 to 4 carbon atoms and n is an integer from 1 10 (see Group IV(b)) e.g. the compound in which R1 to R4 are each ethyl and n is 4.  The active ingredient may be applied in the wet or dry state, e.g. in the form of a spraying, dusting or strewing preparation or solution and may be used in combination with other pesticides.
Patent GB-1269744-A (GB)
Title: Fuel compositions
IPC: C10L1/14
Filed: 1970-02-25
Abstract: 1,269,744. Fuels. LUBRIZOL CORP. 25 Feb., 1970 [3 March, 1969], No. 9108/70. Heading C5G. A liquid fuel additive comprises (1) at least one oil-soluble ashless dispersant (e.g. alkenyl succinic acid/polyamine reaction products) (2) at least one oil-soluble ammonium or amine salt of a sulphonic acid and (3) at least one oil-soluble polyether (e.g. polyethylene- and polypropyleneoxides), the weight ratio of 1:2:3 3 being 100 : 0À25-25 : 0À25-25. The fuel may be gasoline, kerosene or fuel oil. The composition may also contain hydrocarbons e.g. benzene, xylene, hexane, heptane, cyclohexane or cyclopentane and chlorinated hydrocarbons e.g. chlorobenzene.
Patent GB-872652-A (GB)
Title: Electric switches
IPC: H01H23/16
Filed: 1958-03-21
Abstract: 872,652. Snap-action switches; retractive switches; mechanical switches, without quickaction. CUTLER - HAMMER Inc. March 21, 1958 [March 21, 1957], No. 9133/58. Class 38 (5). A switch has a movable contact biased against a shoulder on a driver element pivoted at one end on the base, the contact having an opening freely accommodating the driver element which is pivoted to engage the movable contact with a fixed contact, the movable contact sliding on the fixed contact after initial engagement is made when closing, and before disengagement when opening. The movable contact 34 co-operates with either of two fixed contacts 18 and is mounted on the driver element 38 which is pivoted at 44 in a terminal 16, the contact being biased against shoulder 36 by a spring 48. The upper end 42 of element 38 engages a recess in a slider 88 which is moved by an actuating dolly 80, either directly, Fig. 19, or through a lost-motion snap-action mechanism, Figs. 1, 6. This mechanism comprises a slider 86 having lugs 134 projecting into slots in the slider 88, each slider having a central aperture accommodating the end 84 of the dolly. When the dolly is tilted either way, it first engages one of the lugs 134 and moves the slider 86 along. This causes one of two springs 90 to be compressed, the other ends of the springs being held by the slider 88 which is itself held by spring-loaded plungers 92 engaging notches 124 in its lower surface. Further movement of the dolly brings its end 84 into engagement with the end 128 of the aperture in slider 88 which is thus forced along, the plungers 92 being forced down so that the stressed spring 90 moves the slider with a snap-action. Return springs 140 provide for retractive operation in each or either direction, or the springs 140 may be omitted. As shown, the switch has a central " off " position, but slider 88 may have only four notches 124 instead of six, so as to provide a change-over switch, Fig. 10 (not shown), and one of the contacts 18 may be omitted. Two contacts 34 may be actuated simultaneously, (Fig. 5, not shown). The dolly is surrounded by a resilient sealing member 72 and the joint between the base 10 and a cover 54 is sealed by a resilient seal 60.
Patent GB-196596-A (GB)
Title: Improvements in exhaust silencers for internal combustion or other engines
IPC: F01N1/08
Filed: 1923-04-03
Abstract: 196,596. Heather, F., and Hart, E. E. April 24, 1922, [Convention date]. Exhaust-silencers.-A silencer comprises a substantially rectangular box 1 divided into chambers by guide members 6 secured alternately to opposite sides of the box and so disposed that each guide member is inclined to the two adjacent members and away from the inlet to the preceding chamber. The members may be curved, straight, or fluted, and their inclination may beadjusted by bending them. The box is provided with a cast metal inlet 7 and outlet 8, and may be enclosed in an outer casing, with non-inflammable packing between the two casings to. reduce noise.
Patent GB-920379-A (GB)
Title: Improvements in and relating to filter presses
IPC: B01D25/172
Filed: 1961-03-14
Abstract: 920,379. Filters. PREROVSKE STROJIRNY. NARODNI PODNIK. March 14, 1961 [March 22, 1960], No. 9210/61. Class 46. Each plate 2 is provided at each side with a thrust lug 3 and also at each side with a gripping lug 4. On each side of the press a gripper 5 is slidable along a bar 21, each gripper having pivotally mounted on it a snap 6 provided with a downwardly projecting tooth 6a and an upwardly projecting thrust portion 6b. The grippers 5 are secured to endless chains 13 which are reciprocated by hydraulic rams through rack-and pinion gearing (not shown). A closing plate (not shown) to the right is actuatable by a separate hydraulic ram. On each movement to the right of the grippers, one plate 2 is drawn along.
Patent GB-543571-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01T1/10
Filed: 1940-05-29
Abstract: 543,571. Protective arrangements. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. May 29, 1940, No. 9411. Convention date, June 13, 1939. [Class 38 (iv)] [Also in Groups XXXVII and XXXVI] The discharge initiated by a relatively-low voltage across the surface of a semi-conductor, such as silicon carbide, boron carbide, and zinconium compounds of the type used for resistance-rod construction, is utilized for over-voltage protection. Figs. 1 and 2 show a lightning- arrestor connected at 73, 89 across a transformer winding, the connection 89 being made to an internal stud 93 threaded into a nut 95 in a fibre cylinder 97. Connection 73 and a conductor 83 are welded to a band 77 in a groove in insulator 67, which is closed below by an apertured casting 101 connected through a high resistance 137 to a further conductor 139. Between the nut 95 and casting 101 is an assembly 113 comprising five fibrous plates 115, 117, 119, 121, 123 of a cross section such that when assembled, they form a cylindrical body with four parallel internal slots extending the full length thereof. One face of each slot is itself slotted to receive silicon carbide surfaces 133 formed by depositing paste in the slots and firing the plates so that the silicon carbide adheres to them. On over-voltage, the surfaces 133 cause a discharge and an arc crossed the relatively-narrow gap 83, 139, but owing to the resistance 137, is transferred to the relatively wide gap between 83 and the lower flange 103 of castmg 101. The arc within the assembly 113 is extinguished by the gas evolved and so interrupts the current. In a modification, a number of porcelain bars with silicon carbide sintered on their surfaces are embedded in pellets of fibre on boric acid in a cylinder, Fig. 4 (not shown), or silicon carbide particles or lamp black may be distributed within the cylinder, and watercondensing bodies or wire gauze may be added to condense the water vapour emitted by the pellets, Fig. 5 (not shown). In Fig. 6, a block of fibre or phenolic condensation product 169 in which silicon carbide is embedded, or having the surfaces of apertures 171 coated with the material, is located between a gauze 173 and a conducting plate 165 above which is a conducting button 169 forming another gap. The block may be replaced by closely-stacked fibre pencils or by pellets. Fig. 7-9 (not shown). The Specification as open to inspection under Sect. 91 described also an arc-extinguishing device for a circuit-breaker, Fig. 1 (Cancelled) (not shown). This subject-matter does not appear in the Specification as accepted.