baber/WOPTO huggingface dataset:
Patent GB-748610-A (GB)
Title: Improvements in or relating to a method for treating alkali metal chromates
IPC: C01G37/02
Filed: 1953-06-18
Abstract: Alkali metal chromates are partially reduced by passing a stream of hydrogen in contact with a dry granular mass of the chromate particles initially maintained at a temperature within the range of 300 to 350 DEG C. and thereafter maintaining the temperature above 300 DEG C. and below the fusion point of the reaction mass up to a maximum of 600 DEG C. and continuing the contact of hydrogen with the chromate until the reaction is substantially complete as determined by the amount of hexavalent chromium remaining in the reaction mass. The fusion point of the mass rises as the reaction proceeds and the temperatures are such that fusion is at all times avoided.  The reduced product after washing to remove impurities may be employed after drying as a chromium containing material for use in metallurgical exothermic alloying mixes, or alternatively the reduced materials after washing may be calcined at above 600 DEG C. in an oxidizing atmosphere for example air, whereby the chromium complex resulting from the reduction treatment breaks down to a mixture of chromic oxide and alkali metal chromate.  The latter may be removed by leaching with hot water leaving a solid residue of high purity chromic oxide.  The raw material employed, preferably sodium chromate, may be either pure crystalline anhydrous salt or crude sodium chromate for example, crystallized from leach liquors obtained from the alkaline oxidation roasting of chromite ores, which crude product contains as impurities sodium aluminate, hydroxide, carbonate, sulphate and silicate.  The aluminate, carbonate, sulphate and silicate impurities are removed by water leaching of the reduced reaction product but the sodium hydroxide content of the starting material is preferably reduced to below 15 per cent by weight either by treating the crude material with carbon dioxide or by extraction with a low molecular weight aliphatic alcohol. Alternatively if the sodium hydroxide is not removed diluents such as the leached reaction product or purified chromic oxide may be added to prevent fusion of the reaction mass.  The hydrogen employed is preferably pure but carbon dioxide may be tolerated as a diluent since it reacts with any free sodium hydroxide present to form leachable sodium carbonate. The reduction reaction which is preferably effected at 300 to 400 DEG C., may be carried out in a tubular reactor preferably with agitation, the solid and gas preferably passing in counter current. Examples compare reduction with hydrogen at 315 DEG C. according to the invention, whereby 99.5 per cent of the initial chromate is reacted, with reduction with hydrogen at 650 DEG C. when fusion occurs and only 50 per cent of the initial chromate reacts.  Further examples illustrate the effect of sodium hydroxide concentration in the initial material and compare the reduction with hydrogen according to the invention with reduction employing sawdust, sawdust and a hydrogen stream, and reduction with charcoal. Chromates of Li, Na, K, Rb and Cs may be so treated.
Patent GB-372128-A (GB)
Title: Process for the manufacture of physiologically active substances from liver
Filed: 1931-06-10
Abstract: Remedies, to be administered by subcutaneous injection, for the treatment of pernicious an mia are obtained by freeing pressed juices of liver from albumen.  According to one example fresh liver is ground with sand, wrapped in cloth and subjected to high pressure. The juices obtained are mixed with alcohol, filtered after standing, heated to 70 DEG  C., centrifuged to remove the precipitate, mixed with a little hydrochloric acid and phenol, and again filtered after prolonged standing.  A second example is similar to the first except that a mixture of sand and kieselguhr is used in the preliminary grinding and that a further quantity of alcohol is added with the acid and phenol and is removed from the final product by heating in vacuo.  The Specification as open to inspection under Sect. 91 (3) (a) relates also to the treatment of aqueous extracts of liver and of pressed juices or aqueous extracts of stomach.  This subject-matter does not appear in the Specification as accepted.
Patent GB-345161-A (GB)
Title: Improvements relating to the manufacture of bags with shaped ends or bottoms
IPC: B65D30/18
Filed: 1930-06-02
Abstract: 345,161. Making paper bags. FISCHER, G., 25, Detmolderstrasse, Bielefeld, Germany. June 2, 1930, No. 16991. [Class 94 (ii).] Relates to machines for making flat paper bags from either tubular blanks or tubular webs in which the upper layer of a blank is carried around a roller m by a pin f whilst grippers d operating through thumb notches hold the lower layer to a folding cylinder c provided with lateral grippers e which, aided by a creaser blade g on the roller m, determine the line about which end folding is effected, the bag end being opened to diamond form by a nose h and presser plate r and pasted by a roller j, having blades k which form the folding creases, prior to a turning member n folding over the rear flap before a stationary blade s completes the end folding. According to the invention the gripper or grippers d are so arranged that bags with either folded bottoms as in Fig. 9 or crossed bottoms as in Fig. 12 may be made. The bags drop from the folding cylinder on to a conveyer moving continuously or intermittently longitudinally or transversely of the direction of the machine and lie on it either singly or with the bottom of one bag on the back of an adjacent one. The other end of the bag may be similarly closed except for the provision of a filling valve.
Patent GB-254511-A (GB)
Title: Telephone communicating and alarm systems
IPC: H04M9/08
Filed: 1925-07-02
Abstract: 254,511. Western Electric Co., Ltd., (Western Electric Co., Inc.). July 2, 1925. Fire and like alarm systems.-A system for use on ships comprises telephone transmitter stations such as 1, 2, and receiver stations such as 3, 4, each having a number of loud speakers, connection being effected through a central amplifier 5 to the desired receiver station or stations by a relay selector. Means are provided for disconnecting in all cases the receiver associated with the transmitter station. A key is provided at each station for giving an alarm signal in all the receivers by causing the valve system to emit low-frequency oscillations. At the transmitter station 1, the transmitter 6 is connected to the input transformer 14 of the valve 12 by operating the key 47. At the same time, the associated receiver 8 is disconnected. Operation of one or more of the keys 56, 64 then energizes one or more of the relays 49, 50 to connect the desired receivers to the output transformer 20 of a pair of push-pull valves 13 coupled to the valve 12. The auto-transformer 22 has a separate tapping for each receiver station. To give an alarm signal, the key 73 is operated. Relays 36, 34 energize, disconnecting the normal input circuit, changing the setting of the potentiometer 15 and removing shortcircuits from the feed-back transformer 30, so that the valve 12 generates low-frequency oscillations. The key 73 also energizes all the relays 49, 50 to connect up all the receiver stations, and relay 83 operates to close a fresh circuit for the receiver 8 associated with the transmitter station 1.
Patent GB-556544-A (GB)
Title: Improvements in and relating to spring nuts
IPC: F16B37/04
Filed: 1942-11-30
Abstract: 556,544. Sheet metal nuts. UNITED-CARR FASTENER CORPORATION. Nov. 30, 1942, No. 17001. Convention date, Dec. 9, 1941. [Class 89 (i)] Sheet metal nuts stamped with a sleeve portion 11 that is tapped for the screw have lateral members 15 adapted to cam into position in an aperture in a supporting member 14 and then spring into the position shown in Fig. 6 in which the nut is retained between flanges 18 anc shoulders 16. The parts 20 are stamped to arcuate form to facilitate entry of the screw 12.
Patent GB-760433-A (GB)
Title: High pressure polymerization of dialkylcyclosiloxanes
IPC: C08G77/00
Filed: 1954-06-10
Abstract: Cyclic organopolysiloxanes of the formula (R2SiO)z, wherein each R is an alkyl radical and z is an integer from 3 to 8, are polymerized to higher molecular weight polymers by treatment with an alkaline catalyst at a pressure of at least 1500 lb. per square inch, and preferably at 100 DEG  to 350 DEG  C. Catalysts specified are sodium and potassium hydrides, sodium potassium and lithium hydroxides, sodium and potassium ethoxides, tetramethyl- and benzyl-triethyl-ammonium hydroxides and potassium silanolates and siloxanolates.  The process may be conducted (a) under static conditions by (1) charging a reactor to maximum capacity with the siloxane or siloxane mixture, sealing and applying pressure hydrostatically by heating the charge, or (2) charging the siloxane to an open reactor and applying pressure on the charge through the open end of the reactor by means of a hydraulic press or a piston-type pump; or (b) under continuous flow conditions, e.g. in heavy-walled tube reactor equipped with heating means, the pressure being applied by means of a high-pressure plunger pump or a piston-type pump.  Numerous examples are given.
Patent GB-146284-A (GB)
Title: Improvements in antifriction roller bearings
IPC: F16C33/58
Filed: 1920-06-24
Abstract: 146,284. Nordiska Kullager Aktiebolaget. June 28, 1919, [Convention date]. Roller bearings.-A roller bearing which is self-alining and which allows axial motion of the shaft and inner race has one race cylindrical while the other is spherical. The rollers have curved running surfaces of the same or greater curvature than that of the race. As shown, the inner race 2 is cylindrical and may have flanges 4 to limit the axial play allowed by the bearing, while the outer race 3 is spherical. In a modification, the rollers and the outer race are cylindrical and the inner race is spherically convex. The Specification as open to inspection under Sect. 91 (3) (a) states also that the inner raca may be grooved, the outer race being spherical. This subject-matter does not appear in the Specification as accepted.
Patent GB-1030599-A (GB)
Title: Improvements relating to badge bars
Inventor: DAY JOHN ANTHONY
IPC: B60R19/02
Filed: 1965-04-23
Abstract: 1,030,599. Badge bars. DESMO Ltd. April 23, 1965, No. 17170/65. Addition to 964,941. Heading B7B. A badge bar as in the parent Specification has the gripping surfaces of the clamps offset from the axis of the bar end and these surfaces may be at a small angle to a plane normal to such axis.
Patent GB-1026854-A (GB)
Title: Improvements in and relating to a fluid distributing device
IPC: D21F5/00
Filed: 1964-04-25
Abstract: 1,026,854. Drying apparatus. MIDLANDROSS CORPORATION. April 25, 1964, No. 17257/64. Heading F4G. [Also in Division F2] Apparatus for drying webs or bulk material carried on a conveyer comprises a conduit 23 extending transversely of the web and having a continuous longitudinal slot 27, means for delivering air to the conduit, a closure member 51 disposed in the conduit, and means for actuating the closure member, said means being subdivided into a plurality of independently operable portions whereby to vary selectively the escape of air over the length of the slot. The actuating means comprises a tubular resilient member 31 secured in a channel-shaped seat 33 and divided into a plurality of air chambers 38 by means of clips bolted to the seat 33. Each chamber 38 communicates with a separate high pressure line 46 so that it may be independently inflated to move the adjacent portion of the closure member 51 into engagement with the slot. A plurality of such conduits is arranged along the path of the web and is connected to a common source of air which may be heated.
Patent GB-1134902-A (GB)
Title: Anthraquinone dyestuffs
Inventor: HEDERICH VOLKER
IPC: C09B1/51
Filed: 1966-04-20
Abstract: 1,134,902. Anthraquinone dyestuffs. FARBENFABRIKEN BAYER A.G. 20 April, 1966 [24 May, 1965],` No. 17267/66. Heading C4P. The invention comprises anthraquinone dyestuffs containing two to four auxochromic substituents in the α-positions and an acyloxy group in the #-position. Specified auxochromic substituents are amino, alkylamino, arylamino, acylamino, - " hydroxy, ' alkoxy, aryloxy, alkylmercapto or arylmercapto groups. Specified acyloxy groups are aliphatic or aromatic carboxylic or carbonic acid esters, aliphatic or aromatic sulphonic acid ester or N;N-dialkylamino-sulphonic acid ester groups. 'They may be obtained by acylating the appropriate #- hydroxy-anthraquinone compound with a reactive derivative -of an aliphatic or aromatic carboxylic or sulphonic acid or with a halocarbonic acid ester. The reaction may be carried out in an organic solvent or in an aqueous medium in the presence of an acid-binding agent. Numerous examples are given for the preparation of the dyestuffs. They are useful for dyeing synthetic fibres blue, red, violet, orange and green shades.
Patent GB-932346-A (GB)
Title: Improvements in vehicles
IPC: E05B65/12
Filed: 1961-05-11
Abstract: 932,346. Latch fastenings. FLOBY INDUSTRI A.B. May 11, 1961 [May 16, I960], No. 17298/61. Class 44. A vehicle includes a latching device for a door, comprising a keeper 5 mounted on the door frame and co-operating with a latch 9 attached to the door, the keeper being connected to the door frame by means of a yielding member e.g. a spring 11 and a catch member 17 being mounted on the side of the latch or the door facing the door frame and adapted to engage the keeper in the event of a change of the distance between the door frame and door in the closed position of the latter. The latch 9 includes a slidable latch bolt 7 mounted in a casing. As shown the catch member 17 is attached to the casing and it co-operates with a hook-shaped projection 16 on the keeper to hold the keeper in engagement with the bolt in the event of distortion of the door frame in a collision. To allow the keeper to move it comprises a head including the hookshaped projection 16 on a rod 10 which is slidably mounted in a sleeve 3 which is attachable to the door frame and the spring 11 is trapped between the end of the sleeve and the end of the rod opposite to the head; hence when the door frame is distorted the rod can move through the sleeve 3 against the pressure of the spring 11. The rod 10 can be of square or other non-circular shape or alternatively of circular shape in cross-section as shown in which case a guide plate 14 is provided which bears on the head to maintain the head in the correct position.
Patent GB-119043-A (GB)
Title: An Improved Barbette Mounting for a Gun on Aerial Craft.
Inventor: ROE ALLIOTT VERDON
IPC: F41A27/30
Filed: 1916-12-02
Abstract: 119,043. Roe, A. V. Dec. 2, 1916. Mountings for use on aircraft.-Relates to mountings especially for use on aircraft and comprising an arm carrying the gun at one end and pivoted at the other end on horizontal trunnions on a bracket carried by a ring with rollers adapted to be trained around a base ring. According to the invention, the arm F, Fig. 4, is arranged to turn about the horizontal trunnions E with a very full travel. The gun H is connected to the arm F by a universal joint G, and the arm is forked and pivoted on the trunnions E which are carried by a bracket C movable on the training ring A. Bands P, Fig. 1, on drums N for clamping the trunnion bearings E are actuated by eccentrics R and a handle S, which serves also to clamp the training ring A. to the base ring B by means of a cam and wedge. The weight of the gun about the trunnions E is balanced bv the tension of rubber bands i, i<1>, each of which is connected by a pair of .straps L, M to opposite points of drums 0 on the trunnions. The tension of the bands is adjusted by screws j, j<1>. Reference has been directed by the Comptroller to Specifications 124,501 and 143,937
Patent GB-1031784-A (GB)
Title: Improvements in or relating to pulse length discriminators
IPC: G01R29/027
Filed: 1963-05-02
Abstract: 1,031,784. Pulse radar; radio receiving systems. C.S.F. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 2, 1963 [May 3, 1962], No. 17361/63. Headings H4D and H4L. A pulse length discriminator for selecting wanted oscillation pulses of known length from signals including unwanted oscillation pulses of substantially greater length comprises a subtraction or addition circuit fed with all the signals through two parallel channels of substantially equal gain and differing in delay by a time equal to that occupied by a whole number of half-cycles of oscillation at the mean oscillation frequency and substantially equal to an integral sub-multiple (including unity) of the known pulse length, and a multiplier circuit fed with the output of the subtraction or addition circuit through two parallel channels differing in delay by a time less than the length of the pulse produced by the subtraction or addition circuit from an input pulse of the known length. In one embodiment, Fig. 1, for selecting only desired radar I.F. pulses of duration D, a subtraction circuit 6 is fed with input signals, Fig. 2a, which include a wanted pulse A and an interfering signal P on which a further wanted pulse F is carried and a delayed train, Fig. 2b, the delay in line 3 being substantially equal to duration D and to a whole number of cycles at the mean I.F.; the " delay " path to amplitude-phase detector 10 (which produces an output equal to the product of the amplitudes of its two inputs multiplied by the cosine of their phase difference) produces a delay substantially equal to duration D and equal to a whole number of half-cycles at the mean I.F. The waveforms at the output of the subtraction circuit, Fig. 2c, at the output of delay line 8, Fig. 2d, and at the output of detector 10, Fig. 2e, are depicted. Amplifiers 4, 5, 9 and 11 are provided for gain equalization. Circuit 6 may be an addition circuit in which case the delay in line D is an odd number of half-cycles at the mean I.F. In another embodiment, two arrangements as described above with reference to units 2 to 6 are employed in cascade, the delays in lines 3 of each cascade assembly being D/2, Figs. 3, 4. In a further embodiment, similar to that of Fig. 1, the delay in line 8 is 5D/4, Figs. 5, 6.
Patent GB-200513-A (GB)
Title: Improved spring seat
IPC: A47C7/34
Filed: 1923-07-04
Abstract: 200,513. Parsons, C. S., (Assignee of Miller, D. E.). July 4, 1922, [Convention date]. Spring surfaces for vehicle seats. A spring vehicle seat comprises an intermediate frame 2 hinged at opposite edges 3, 4 to the front edge of an upper frame 1 and rear edge of a lower frame 5. Helical springs 7 are placed directly beneath the upholstered seat portion 8 and the base frame 5, and further helical springs 12 are preferably placed as shown. The front, back, and sides of the seat are covered in by upholstery material 13. The intermediate frame 2 is either a skeleton frame or is so perforated as not to interfere with the springs 7.
Patent GB-1272690-A (GB)
Title: Signal lamps
Inventor: BAILEY JOHN J
IPC: H05B41/34
Filed: 1970-04-13
Abstract: 1,272,690. Lamps. SAFETY PRODUCTS CO. 13 April, 1970, No. 17438/70. Heading F4R. A warning lamp for use on vehicles or roadways comprises a conical light-transmitting body 41, a head unit 42 mounted inside the body and incorporating a reflector 45 containing a light source, a base unit 43 also mounted inside the body, and self-contained means within the body for electrically and intermittently energizing the source. The energizing means comprises a battery and an interchangeable circuit module for determining the flashing frequency of the source, both of which are mounted in the base unit, and a pulse and rectifier assembly mounted in the head unit, the two units being separable form one another. The source is preferably a xenon or krypton tube, and the reflector has a parabolic internal reflective surface with its axis parallel to the axis of the body 41.
Patent GB-290960-A (GB)
Title: Moving blades for steam or gas turbines
IPC: F01D5/14
Filed: 1927-06-30
Abstract: 290,960. Schneider et Cie. May 21, 1927, [Convention date]. Blades.-Moving blades of elastic fluid turbines of the kind in which the blade is formed from a blank the concave side of which has a constant cross-sectional curvature for all points along the length of the blade, have the inlet angle on the concave side of the blade equal to the angle of relative velocity for all points along the inlet edge of the blade. In Fig. 2, a denotes the absolute angle of the working fluid velocity, #<1> the resultant angle of the relative velocities of the working fluid and the peripheral velocity of the blade root and #1<1> the resultant angle at the tip. The back of the blade edge is machined to allow the fluid to enter at the correct angle. The outlet angles are also variable. The axis x, x of the blade blank is inclined to the vertical, Fig. 5, and the inlet edge is cut over a width a at the tip and the outlet edge over a width a<1> at the root. The edges are then thinned to the appropriate angle by machining. The width a is determined by describing the difference # between the velocities #<1>, #1<1> at the centre curvature of the blade so that the lines from the arc D, E are the edge of the blade, Fig. 11. The radius of curvature there determines the width a. The width a<1> is chosen so that the working fluid is guided sufficiently towards the blade roots.