baber/WOPTO huggingface dataset:
Patent GB-473885-A (GB)
Title: Improvements in or relating to the preservation and preparation of sea-weed
IPC: A23B7/144
Filed: 1936-03-17
Abstract: Seaweed, e.g. laminaria digitata, which may subsequently be used for the preparation of alginic acid or its derivatives or as a foodstuff, is preserved by curing with sulphur dioxide with which may be admixed other gases, e.g. the products of the combustion of sulphur in air may be used, sufficient sulphur dioxide being employed to ensure that the seaweed is uniformly impregnated with and changed by <PICT:0473885/IV/1> <PICT:0473885/IV/2> the sulphur dioxide throughout its substance.  The seaweed may be reduced by chopping &c. to pieces of a regular size before the treatment which is carried out at atmospheric temperature. Before utilization the preserved seaweed may be washed free of sulphur dioxide, preferably after further comminution.  In one form, the seaweed is treated in wooden chambers 11--13, Fig. 1, in which it is supported on slats 15 carried on transverse wooden bearers 16 between which is a space for entry of sulphur dioxide from a pipe 17.  Gases containing about 6--7 per cent of sulphur dioxide are generated by supplying air by a fan to a retort 19 fed with sulphur through a branch 20, the gases passing through a cooling section 21, surrounded by a jacket 22 through which water is circulated, and a pipe 18 to the pipes 17, each of which has a control valve 25.  When the treatment is completed the hinged end 14 of the chamber is lowered and the contents are discharged, one of the other chambers being then in use for the treatment and the other in course of being charged, the three chambers being operated in rotation.  In another form, the process is operated continuously in a rotating drum 32, Fig. 3, supplied with the seaweed from a conveyer 41 through a hopper 30, a gas-tight rotary valve 34 and an inlet chamber 31 having a shoot 35, the treated material being discharged from a delivery chamber 33 by a worm 37 to a conveyer belt 38.  The drum 32 has longitudinal members 36 which lift and agitate the material during the treatment.  Sulphur dioxide is fed in through an inlet 39 and discharged through an outlet 40.  In both forms, the gases leaving the treatment zone may be fed to an auxiliary tower charged with seaweed where the excess of sulphur dioxide is absorbed, the seaweed when it becomes inefficient being supplied to the treatment chamber and replaced by fresh material.  Specifications 22247/00, 21364/01, 8091/03, and 3604/10, [all in Class 49], are referred to.  The Provisional Specification describes the treatment of seaweed with any preservative in gas or vapour form.
Patent GB-921771-A (GB)
Title: Materials for use in half-tone reproductions
IPC: G03F5/00
Filed: 1959-03-09
Abstract: 921,771. Prescreened photographic materials and contact screens. KODAK Ltd. March 9, 1959 [March 10, 1958], No. 8142/59. Class 98 (2). A light-sensitive layer is exposed through a half-tone screen spaced therefrom in a parallel plane and through a screen, mask consisting of dots which are in register with the intersections of the crossed lines of the screen and are close to or in contact with the light-sensitive layer. A Clayden sensitive layer is employed for the pre-screening and is given a Clayden desensitising exposure; a normal contrast emulsion may be used for the contact screen production and exposed to a tungsten lamp. Various forms for the dots of the screen mask are described, and this is preferably made from the ruled half-tone screen. In Fig. 1 a high-intensity short-duration flash from lamp 10 through one or more apertures 11 which may be round or of other shape is projected through cross-line screen 13 having intersections 14 the same width as openings 15 and then through the mask or "tint" constituted by support 18 having black dots 19 directly behind intersections 14 as far as lamp 10 is concerned on to emulsion 20 on support 21 a half-tone distance from the screen 13 as determined by spacers 22. Of Figs. 2-13 (not shown) the majority are concerned with a discussion of the dot arrangements of the resulting self-screened material and the benefits of using a mask 18 having dots 19 of relief or raised form as in Fig. 1; Figs. 12, 13 however illustrate the production of selfscreened material by flash exposure through a contact screen as of Fig. 18A to be later described. For preparation of the screen mask or " tint " a ray as from tungsten lamp 70, Fig. 14A, via reflector 71 through aperture 72 is projected to an assembly like that of Fig. 1 having the same half-tone screen 13 and spacers 22 but then lith type emulsion 75 on support 18, and processing of this emulsion by a method involving peroxide bleaching to produce the raised dots 19 shown in Fig. 1 is described; such dots being re-registered behind the screen 13 for the actual operation of Fig. 1. A number of alternative methods for production of this screen mask also are described. Contact screen production is illustrated in Fig. 18A, similar to Fig. 1. In this, tungsten lamp 115 used in front of aperture 11 shines on the halftone screen 13 and thence through the screen mask with black dots 19 on support 18 to emulsion 116 on support 117 at half-tone distance, and this emulsion produces such screens by either direct or reversal development, preferably, however, a mask having grey dots covering 80% of the area rather than black dots covering 10% of the area is used for the purpose. The procedure of Figs. 21, 22 and 23 is further described with reference to Figs. 1, 2 and 3 of the Provisional Specification 921,772. Other procedures involving reregistration with double exposure sequences are described with reference to still later figures. Specifications 699,659, 748,720 and 748,721 also are referred to.
Patent GB-879162-A (GB)
Title: Improvements in or relating to washing machines
IPC: D06F13/00
Filed: 1959-03-10
Abstract: 879,162. Electric air-heaters. WINDMILL, J. H. W. Feb. 18, 1960 [March 10, 1959], No. 8155/59. Class 39(3). [Also in Group XIII] The closure member 7 of a washing machine incorporates a motor-driven fan 16 and an electric heater 18 and may be used when suitably mounted on an adjustable tripod base as a space heater. The closure has air discharge slots or louvres 8 around its edge and the fan and heater housing 10, 12 has safety guards 17, 19 the latter incorporating an air baffle 20. The housing part 12 may be domed to enclose the fan motor.
Patent GB-983381-A (GB)
Title: Pigmentation of plastic materials
Inventor: DEVERELL-SMITH RAYMOND
IPC: C08K5/3467
Filed: 1963-02-28
Abstract: High melting thermoplastic polymeric materials are coloured maroon by the incorporation of 1:11:5:111-trianthrimide and are subsequently made into the desired shape.  Exemplified materials are low density polyethylene, stereoregular polypropylene, polystyrene, polymethyl methacrylate and an unspecified unsaturated polyester which is polymerized on to a glass fibre mat.
Patent GB-479981-A (GB)
Title: Improvements in means for cooling brake rims
IPC: F16D65/82
Filed: 1937-03-19
Abstract: 479,981. Cooling brake drums. FITZPATRICK, W. G., and WEBSTER S. W. March 19, 1937, No. 8168. [Class 103 (i)] Means for cooling a brake rim comprises a supply pipe 25 with a head 26 adapted to spray water on to the rim 11 of the brake drum which is formed as an annular trough and a pipe 30 for withdrawing the water. The arrangement is such that the water 'does not over flow from the drun either when it is rotat ing or is stopped, a layer of water of a depth deter mined by the distance o the end 31 of the pipe 30 from the drum being formed by centrifugal force when the drum is rotating. The head 26 is arranged to spray the water on both sides of the vertical diameter of the rim so that the water flows over the whole of the rim when it is stationary. The suction device for the pipe 30 comprises an ejector 32 to which actuating fluid is supplied by pipe 34 having a control valve 35. The plate 15 which is secured to the drum to form the trough may be dished as shown, to accommodate relative expansion of the plate with respect to the drum.
Patent GB-407010-A (GB)
Title: Improvements in or relating to ball valve members and spindles for use with rotary ball valves
IPC: F16K27/06
Filed: 1932-08-29
Abstract: 407,010. Rotary-ball valves. ALLEN, R., 23, Berwick Avenue, Hayes Bridge Estate Hayes, Middlesex. Aug. 29, 1932, No. 8197/33. Divided on 406,660 and addition to 403,389. [Class 135.] In a rotary-ball valve in which the ball is connected to the spindle by a separate coupling member, as described in the parent Specification, the coupling member is connected to the ball by means of a complementary connecting member. In the form shown in Fig. 2 the complementary connecting member 1 is formed with a recess 2 to receive a tongue on the coupling member, or it may be formed with a tongue to engage a recess in the coupling member. It is also provided with integral or detachable pins 4 to engage in holes 5 in the ball 3, and a bolt 8 is screw threaded into a slot 9 at the bottom of the recess 2 and into a slot 10 in the ball. The under surface of the member 1 may be curved to fit the contour of the ball which may be of the composite type described in Specification 406,660. In Fig. 12 the member 1 is formed with a recess 18 to fit over a tongue 16 on the upper end of an internal supporting collar 15. Figs. 5 and 15 (not shown) illustrate alternative methods of connecting the member 1 to a solid ball. The ball may be made of copper or other soft metal, which may be plated with chromium to produce a hard outer skin, and the member 1 is preferably made of a hard metal.
Patent GB-1100949-A (GB)
Title: Metal laminates
Inventor: WOODWARD ROBERT MURDOCK
IPC: C22C28/00
Filed: 1966-02-24
Abstract: <PICT:1100949/C1/1> The spinning nozzles 10 with openings 11 used in glass fibre manufacture are made from a metal laminate comprising at least two layers, the first or centre layer consisting essentially of an alloy of 75 to but not including 100% rhodium and from 25 to but not including 0% platinum bonded to a second or outer layers consisting essentially of an alloy of from 60 to but not including 100% platinum and from 40 to but not including 0% rhodium. Preferred ranges for the first layer are 90-95% Rh and 10-5% Pt and for the second or outer layers 75-90% Pt and 25-10% Rh.  The molten glass is therefore in contact with the high Pt alloy and the tips 12 of the openings 11 may be built up with the Pt weld material, a number of different shape openings being disclosed. missing page 8
Patent GB-587577-A (GB)
Title: Briquetting press
IPC: B30B11/02
Filed: 1944-05-02
Abstract: 587,577. Moulding-machines. HUBBERT, L. S. May 2, 1944, No. 8242. Convention date, April 2, 1943. [Class 87 (ii)] [Also in Group XXIX] Convention date, April 2, The mould, in which hollow briquettes are made, comprises a stationary base 69, which surrounds a vertically-reciprocable core 70, and a tubular side wall 25. With the parts in the position shown in Fig. 1, the operator presses a pushbutton and the following automatic electrically-controlled sequence of events occurs:- (1) Valve 42 reverses, whereupon liquid from pump P passes therethrough and depresses piston 21. The piston descends until its platen 22 engages stops 27 on a beam 26 which houses the mould part 25, and the plunger 23 enters the mould and slightly compresses the material therein (see Fig. 5). (2) The piston continues to descend, compressing the material and pushing the beam 26 before it, the mould part 25 sliding over the material contained therein. During this movement the retraction pistons 28, 29 descend a short distance in their cylinders. (3) When a predetermined pressure exists above the piston 21, a tonnage valve 49 opens a switch, whereupon piston 21 rises to the Fig. 1 position and stops, and valves 35, 57 are reversed. Pressure liquid thereupon passes through valves 35, 57 to depress pistons 28, 29, 63, the mould part 25 being thereby stripped from the briquette and the core 70 being lowered out of the formed briquette (see Fig. 7). (4) When the beam 26 and core 70 reach their nadir they operate switches which restore valves 35, 57, whereupon the beam 26 and core 70 rise to the positions shown in Fig. 1. As the beam rises it takes with it the briquette which has slightly expanded after removal from the mould and the briquette is removed by the operator. The cycle of operations cannot be resumed unless the beam 26 and core 70 are in their proper (raised) positions. In a modification, for making articles which cannot be removed from the mould by a simple stripping action, the mould part 25 is replaced by a fixed mould part 92 and a movable mould part 94, the latter being slidable in a beam 93 (corresponding to 26) and being operated by a hydraulic piston 95 carried by the beam 26. Stops corresponding to 27 and 67 may work within sleeves designed to prevent trapping of the operator's hands.
Patent GB-313985-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: B66C13/30
Filed: 1928-03-19
Abstract: 313,985. British Thomson-Houston Co., Ltd., Peacock, J. V., Nixon, L. R., and Harris, F. H. March 19, 1928. Regenerative systems.-In regenerative braking of an electric motor running on approximately constant current, the field-winding of the motor is automatically weakened when the speed is high in order to limit the regenerated voltage and to increase the braking torque with decreasing speed. The arrangements described also provide for limitation of speed while the motor is driving the load, by means of a coupled generator opposing the field excitation. In the kind of arrangement shown in Fig. 1, the motor 2, while driving the load has its excitation opposed by a coupled generator 1 with a self-excited field 4 and a field 6 excited from the counter e.m.f. of the motor, both fields acting in the same direction. When the reversing switch 5 is thrown over to convert the motor into a braking generator, the effect of the machine 1 continues to provide a field weakening control at high speed, since the strength of the reversed winding 6 is greater than that of the winding 4. The machine 1 may have an additional separately excited field-winding for the purpose of increasing the motor field strength up to a certain point while starting, and of aiding the field weakening effect during regeneration. In a modified arrangement shown in Fig. 4, the machine 1 has only one self-excited field-winding 4, which is de-energized by reversal when the change is made to regeneration. The machine thus becomes ineffective and the weakening of the motor field is produced by connecting one end of it to a shunt across the motor armature. A separately excited field for the machine may be added to the last arrangement. The invention is particularly applicable to the control of motors operating excavators and cranes.
Patent GB-217667-A (GB)
Title: Improvements in means for transporting merchandise and other material in connection with the loading and unloading of vehicles
IPC: B60P1/54
Filed: 1923-03-23
Abstract: 217,667. Hutchinson, J. H. March 23, 1923. Operating vehicle doors by driver. by cord arrangements, and tilting of vehicle.-In a road vehicle provided with a tipping body the inclina. tion of the body effects the opening of the tail. board 5, the opening being controlled from the driver's seat by a winch 2 and cord 4,
Patent GB-928012-A (GB)
Title: High vacuum electron discharge device
IPC: H01J23/02
Filed: 1962-03-05
Abstract: 928,012. Discharge apparatus. BOMAC LABORATORIES Inc. March 5, 1962 [March 6, 1961], No. 8450/62. Class 39 (1). A high-vacuum electron discharge device 1 comprises means 3, 4 for generating a magnetic field in the discharge space within the envelope of the device, wherein there is arranged within a region of the magnetic field and disposed externally of the envelope, a getter-ion pump 9 of the type adapted to produce an electrical glow discharge when energized, the pump being in communication with the interior of the envelope. The magnetic means is preferably a permanent magnet producing a field of at least 1000 gauss, and the pump, preferably cylindrical, is arranged in the leakage field of the magnet with the axis of the cylinder substantially parallel to the lines of force. In a specific example the discharge device is a magnetron having a cathode assembly 5, cooling fins 6, an output window 2 and tuning means 7, 8. The pump is connected to the discharge device by a pipe 12 of <SP>3</SP>/ 16  inch diameter and with a D.C. voltage supply of 1000-4000 volts, a pumping speed of 0.2 litre/sec. was achieved, the pump being used when the pressure fell above 10<SP>-4</SP> mm. of mercury to lower the pressure to below 10<SP>-7</SP> mm. of mercury.
Patent GB-1058335-A (GB)
Title: Improved method for producing heat-stable beatable wheat gluten suspensions
Inventor: HOHL JOSEF
IPC: A21D13/00
Filed: 1965-03-01
Abstract: Heat-stable, beatable wheat protein suspensions produced by bringing denatured wheat gluten into an aqueous suspension and adjusting by means of a food acid to a pH value of from 3.7 to 4.9 may be used in foam glazes.ALSO:Heat-stable, beatable wheat protein suspensions are produced by bringing denatured wheat gluten into an aqueous suspension and adjusting by means of a food acid to a pH value of from 3.7 to 4.9.  Suitable food acids are tartaric, citric, ascorbic and malic acids.  A multihydroxy food alcohol, e.g. glycerine, may be added. A high gluten-content flour, e.g. filter flour, may replace the wheat gluten.  The suspensions may be used for making merigues or for glazing bakery products.ALSO:Heat-stable, beatable wheat protein suspensions produced by bringing denatured wheat gluten into an aqueous suspension and adjusting by means of a food acid to a pH value of from 3.7 to 4.9 may be used for fire-fighting foam.
Patent GB-1267816-A (GB)
Title: Gas filter
IPC: B01D46/30
Filed: 1969-03-18
Abstract: 1,267,816. Disposable active charcoal filter. DELBAG-LUFTFILTER G.m.b.H. 18 March, 1969 [12 June, 1968], No. 8622/69. Heading BIT. A disposable gas filter comprises a rectangular moulded polystyrene frame (1) divided by integral partitions 4, 5 into square compartments whose lengths equal their thickness, the compartments being filled with active charcoal 6 retained therein by sheets 2, 3 of cloth, plastics or glass fibre, welded or otherwise bonded to the edges of the frame and partitions. The partitions taper outwards as shown and may be injection moulded. The filter is made by bonding one sheet to the frame and partitions, then filling compartments, then bonding the other sheet. The frame may be fitted with a V-shaped peripheral sealing strip. Several such filters may be arranged in zig-zag fashion across a gas duct (Fig. 2, not shown).
Patent GB-689430-A (GB)
Title: Improvements in or relating to the preparation of 2:4:5-trichlorbenzylchloride
IPC: C07C17/32
Filed: 1951-04-13
Abstract: 2,4,5 - Trichlorobenzylchloride is prepared by reacting 1,2,4-trichlorobenzene in a molecular excess of fuming sulphuric acid with chloromethyl ether at a temperature not substantially exceeding the boiling-point of chloromethyl ether (c.a. 59 DEG  C.), e.g. within the range of from -5 DEG  to 20 DEG  C., or from -20 DEG  to 40 DEG  C.  The acid may be used in a 2 to 10 fold excess over the molar proportion, but it is preferred to use an excess of from 5 to 7 mols. over the molar proportion.  One example is given.  The Specification also refers to the introduction of the chloromethyl group into aromatic compounds by means of chloromethyl ether and stannous chloride, or by means of formaldehyde and concentrated hydrochloric acid.  Aromatic hydrocarbons containing negative substituents may be reacted with sulphuric acid, sodium chloride and paraformaldehyde or trioxymethylene to introduce chloromethyl groups. A chloromethyl group is introduced into 4-nitrotoluene with bis-chloromethyl ether and fuming sulphuric acid.
Patent GB-535605-A (GB)
Title: Improvements in and relating to duplicating or manifolding books
IPC: B41L1/24
Filed: 1940-05-15
Abstract: 535,605. Duplicating-books. LAMSON PARAGON SUPPLY CO., Ltd., and RAINEY, E. J. May 15, 1940, No. 8701. [Class 16] A duplicating-book consists of paper strips 4 bound at one edge A, each strip being scored to provide two originals and two duplicates, each original with its duplicate being torn out as a pair. The book having two carbon sheets 10, 11 each extending over a part only of the book. The carbon sheets are secured at opposite ends or sides or on the same side of the book. Each strip is scored at 6 ... 9 and is folded at 8 and, when in use, is also first folded at 9 for use with sheet 11 and then folded at 7 for use with sheet 10. Printed matter on the two originals is applied on opposite sides of each strip.
Patent GB-547968-A (GB)
Title: Improvements in and relating to holders for thermionic valves and other electrical devices
IPC: H01R33/76
Filed: 1941-07-10
Abstract: 547,968. Thermionic valve-holders. CARR FASTENER CO., Ltd., and WAGSTAFF, G. July 10, 1941, No. 8712. [Class 38 (i)] An insulating base 1 has apertures 2 to receive contacts 7 which are secured by an integral lug 9 engaging the base at one side and by an angularly bent portion 10 engaging over a rib 4 formed on the other side. The portion 10 constitutes a soldering tag and after being bent up at 11 over the rib 4 at the margin of the aperture 2 is turned down at a second bend 12 to form a solder trap. The contact 7 has wings 8 between which the co-operating contact enters. A rim 13 seats in a cup-shaped mounting 14 with fingers 15 bent over the rim and lateral wings for riveting to a panel.
Patent GB-573291-A (GB)
Title: Improvements in or relating to yarn winding apparatus
IPC: B65H54/02
Filed: 1944-05-08
Abstract: 573,291. Winding yarns. BRITISH CELANESE, Ltd. May 8,1944, No. 8723. Convention date, May 6, 1943. [Class 120 (ii)] A yarn-winding machine of the driven spindle type has an idler roller for positioning and supporting the weight of the package being wound. A cheese 4, supported by a freelyrotating idler roller 29, is formed on a yarn support 16 driven by a chain drive from a variable speed gear, so as to drive the package with a constant peripheral speed. The yarn may be twisted as it is delivered from a bobbin 5. A spring mounted rod 33 operated by a foot pedal 331 is provided for lowering the package support on to the drum at the beginning of the operation and raising the completed package at the end. A spindle brake 34 is provided together with drop wires 35 for stopping the rotation of the package upon yarn breakage.