baber/WOPTO huggingface dataset:
Patent GB-531344-A (GB)
Title: Improvements in building constructions
IPC: E04B7/12
Filed: 1939-07-19
Abstract: 531,344. Roofs. ASHMORE, BENSON, PEASE & CO., Ltd.. and ABISCH, O. July 19, 1939, No. 20921. [Class 20 (iv)] A roof construction of the " saw tooth type is disposed with the joists 5 mounted between a girder 4 provided on the upper ends of one set of vertical stanchions 1, 3 and a girder 6 which is disposed at a lower level than the girder 4 on brackets 7 jutting laterally from the next adjacent set of stanchions, the joists being adapted to constitute the rafters of the roof without any bracing or latticework, to enable an interrupted even ceiling 12 to be provided. The construction may be of single or multiplebay type and, if desired, the various sets of stanchions may be replaced by walls. The joists are secured to the outer ends of the brackets 7 so as to provide a space for a gutter 10. The stanchions may be braced together by girders 2 which are so disposed relatively to the brackets 7 as to provide a space 9 for the reception of shafts, steam pipes, ventilating pipes &c. The girders 4, 6 may be designed as continuous beams, thus enabling the stanchions to be spaced apart at relatively long distances.
Patent GB-599279-A (GB)
Title: Improvements in or relating to water-proofing compositions for light coloured leathers
IPC: C14C9/00
Filed: 1945-08-17
Abstract: An aqueous dispersion of a water-insoluble metallic soap, for use in waterproofing leather, contains as dispersing agent a cationic surface active base compound comprising a derivative, alkylated with a dialkyl sulphate containing 2, 3, or 4 carbon atoms, of an amino-amide or of a glyoxalidine cyclised therefrom, the aminoamide having the general formula R1-CO-(NH-CH2-CH2)n -NH-R2, where R1 represents an aliphatic chain containing at least 7 carbon atoms, R2 represents a hydrogen atom or a 1 to 3 carbon alkylol group, and n is 2 or 3 when R2 represents hydrogen, or 1, 2, or 3 when R2 represents an alkylol group. Suitable metallic soaps are the stearates of aluminium, calcium, zinc, lead, and cadmium, and aluminium palmitate and oleate.  The base compound is prepared by heating together at 180-210 DEG C. a fat or fatty acid and a polyalkylene polyamine, alkylene alkylol polyamine, or polyalkylene alkylol polyamine having 2-4 amino groups (see Group IV).  Heating to 300 DEG C. gives the glyoxalidine compound.  In preparing the dispersion the dispersing agent is dissolved in water and the finely-divided metallic soap stirred in.  The proportion by weight of the base compound to the metallic soap is at least one to eight, and preferably at least one to four.  Treatment of alumtanned leather may follow fat-liquoring with the material described in Specification 599,261.ALSO:A cationic surface active base compound comprises a derivative, alkylated with a dialkyl sulphate containing 2, 3 or 4 carbon atoms, of an amino-amide or of a glyoxalidine cyclised therefrom, the amino-amide having the general formula R1-CO-(NH-CH2-CH2)n-NH-R2, where R1 represents an aliphatic chain containing at least 7 carbon atoms, R2 represents a hydrogen atom or a 1 to 3 carbon alkylol group, and n is 2 or 3 when R2 represents hydrogen, or 1, 2, or 3 when R2 represents an alkylolgroup. The base compound is prepared by heating together at 180 DEG -210 DEG  C. a fat or fatty acid and a polyalkylene polyamine, alkylene alkylol polyamine or polyalkylene alkylol polyamine having 2-4 amino groups.  Heating to 300 DEG  C. gives the glyoxalidine compound. Peanut oil, oleic acid, ricinoleic acid, lauric acid, stearic acid, and palmitic acid are examples of fats and fatty acids, and diethylene triamine, ethanol ethylene diamine, ethanol diethylene tetramine, and triethylene tetramine are suitable polyamines. Alkylation with dimethyl, diethyl, or dipropyl sulphate is carried out at below 60 DEG  C.  The compounds are used as dispersing agents in preparing aqueous dispersions of metallic soaps for waterproofing leather (see Groups III and VIII).
Patent GB-1342383-A (GB)
Title: Signal compression and expansion systems
IPC: H04B1/64
Filed: 1971-04-19
Abstract: 1342383 Automatic gain control MARCONI CO Ltd 19 April 1971 [3 Aug 1970] 21050/71 Heading H4R In an analog signal transmission system employing compression and expansion, the compression device comprises a substantially linear transfer device the gain of which is varied in step-wise fashion by a bidirectional counter controlled by a comparator arranged to compare the envelope of the amplifier output with a reference and the expansion device includes a second substantially linear transfer device driven by a second bidirectional counter driven in complementary fashion. As shown an input signal Vi is amplified by a linear amplifier 10 and applied to an envelope detector 18 of diode type. The resulting envelope signal on a line 20 is applied to a comparator 22 which produces a positive, zero or negative potential on a line 26 depending on whether the signal on line 20 is more than a fixed amount below a reference potential Vr, differs from the reference by less than the fixed amount or is more than the fixed amount above the reference potential respectively. A positive signal on line 26 causes a counter 16 to step upwardly for each pulse from a clock 28 while a negative signal causes it to step down. Stepping of the counter in one direction or the other causes a change in the code markings on the counter outputs C1, C2, &c., the markings operating switches which connect appropriate resistors in the amplifier feed-back path and/or in series with the amplifier causing a gain change which tends to restore the original output level. The switches may be M.O.S. transistors which may form part of an integrated circuit. The output Vn and information relating to changes in gain may be transmitted to a receiving station using P.C.M., as Delta modulation or amplitude or frequency modulation of a carrier. At the receiving station the original signal is reconstituted in similar fashion, the stepping in the receiver being in accordance with the received information. In a modification the reference input Vr is derived from Vi by means of a non-linear amplifier.
Patent GB-258242-A (GB)
Title: Improvements relating to chromium plating
IPC: C25D3/04
Filed: 1926-08-26
Abstract: 258,242. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Alley, J. D.). Sept. 12, 1925, [Convention date]. Chromium depositing; electrodes; surfaces, preparing.-Chromium is deposited from an electrolyte containing chromic acid and one or more soluble sulphates, the electrodes being separated by 0.5 inch, and a current density of 0.3 to 0.6 amps. per sq. inch being employed. The voltage is between 3 and 4. The temperature should be maintained between 20‹ and 30‹ C. by stirring and the use of heating or cooling coils. A suitable electrolyte contains 150 gms. per litre of chromic acid and sulphuric acid or sodium, chromium or other sulphate to an SO<1>4 concentration of 4-8 gms. per litre. The current density is preferably 0.5 amps. per sq. inch. The electrolyte may be recuperated by addition of chromic acid or by the use of an auxiliary anode of chromium adapted to be inserted in the bath when required. The. article to be plated is first polished and then thoroughly cleaned; the. article mav be of a ferrous or non-ferrous metal or alloy. The anode is of similar shape to the article to be plated and is preferably provided with a large number of perforations to maintain a uniform condition of the electrolyte; it may be of lead or lead peroxide. The platings are most adherent and brightest when the articles are immersed for 1-5 minutes.
Patent GB-408848-A (GB)
Title: An improved bodkin
IPC: D04D11/00
Filed: 1933-08-05
Abstract: 408,848. Bodkins. WARDLE, R., and TWIGGE, M., Mudberry Farm, Brixham, South Devon. Aug. 5, 1933, No. 21199. [Class 112.] A bodkin is made by folding a strip of resilient material so that at the fold, a part d is enlarged to prevent removal of the bodkin-closing clip c. The gripping jaws a and b at the end are also bent so as to prevent removal of the clip c.
Patent GB-156853-A (GB)
Title: Improvements relating to tractors
IPC: B62D55/02
Filed: 1919-08-28
Abstract: 156,853. Christie, W. Aug. 28, 1919. Endless-track vehicles.-A tractor adapted to run either on wheels or on two independentlydriven chain tracks, one on each side, is constructed with the following features :-(a) Each of the chain tracks may, when removed, be placed around brackets adapted to receive it. (b) The front and rear chain track wheels may then operate as steering and driving road wheels respectively. (c) The front wheels are acted on by springs so as to tension the chain track when required. (d) Intermediate supporting-wheels may be raised and lowered. (e) The tractor may carry a gun mounting with a horizontal transverse pivot so that the gun may be tilted down between the tracks. The track 45 runs round steering wheels 13, which are then fixed round driving wheels 12 and over and under intermediate supporting wheels 15, 16. The plates of the track are broad enough to extend under the rubber tyres 19, of the wheels, Fig. 5, while the track is prevented from moving laterally and is driven by pointed lugs 47 which engage in a central groove 18 in the steering and supporting wheels and in pockets 17 in the driving wheels. When it is desired to run the tractor on the rubber tyres of the wheels, track joint pins are removed at points near the upper parts of the steering and driving wheels and the upper length of track is lifted up and secured to the underside of the longitudinal shelf 52. The ends of the lower length of track are connected by a rope which is passed over the upper shelf 53 and over rollers 50, 51 at the ends of the shelves. The tractor is then run forward until the lower length of track has been run on to the upper shelf 53, whereupon the rope is removed and the chain connected up as shown in Fig. 10. The front or steering wheels 13 are each mounted as shown in plan in Fig. 5 on a housing 21, pivoted on a transverse cylindrical member 20 carried by the main frame, the weight of which is transmitted to the housing by a helical spring 22. The steering-wheels swivel for steering about vertical pivots 25 carried on the outer ends of levers 23 pivoted at 24 to the housing. Springs 26 acting on the inner arms of the levers 23 tend to tension the chain track when necessary, but when the track is removed the lever 23 its locked in position by means of a vertical pin 60 having a flattened side, as shown also in Fig. 7. The wheels are then swivelled for steering about the pins 25 by means of arms 64 connected to a transverse rack arranged inside the cylindrical member 20. The intermediate supporting- wheels 15, 16 on each side are carried at opposite ends of an equalizing-lever 32, the centre of which is connected bv a helicalsupporting-spring 34 to a crank-pin on a wormwheel 40, which may be turned by a worm on a vertical shaft 42 so as to raise or lower the wheels. Radius-rods 31 connect the axes of the wheels to the main frame. The breech end of the gun may be tilted down between the housings 21.
Patent GB-1178265-A (GB)
Title: Improvements relating to Multi-Stage Vacuum Pumping Apparatus.
Inventor: BRAND RUDOLF
IPC: F04C18/32
Filed: 1967-05-08
Abstract: 1,178,265. Rotary positive displacement pumps. R. BRAND [trading as RUDOLF BRAND GLASINSTRUMENTEN UND THERMOMETERFABRIK] . May 8, 1967 [May 6, 1966], No.21239/67. Heading F1F. Multi-stage vacuum pumping apparatus comprises a plurality of rotary positive displacement pumps connected in series, the pump at the high-pressure end of the series being sealed and lubricated by oil in an outlet chamber 5, Fig. 1, and the or each other pump being constructed for "dry working" inasmuch as it has outwardly sliding vanes 14, 15 and a sealing block 16 made of a material having self-lubricating properties e. g. either a synthetic carbon filled with metal particles or a mixture of synthetic plastics and molybdenum disulphide. Annular members (17<SP>1</SP>, 18<SP>1</SP>, Fig.3, not shown), made of the material aforesaid are provided at the ends a rotor 13 carrying the vanes 14, 15. The pumps may be of the sliding-rocking vane type, Fig.2, the or each pump other than that at the high-pressure end having a piston 26 and a bearing 33 for the respective vane 28 made of the aforementioned material.
Patent GB-400739-A (GB)
Title: Improvements in earth contacting devices for use in wireless and other systems
IPC: H01Q1/48
Filed: 1932-07-28
Abstract: 400,739. Earthing-devices. FARISH, T. G., 42, London Lane, Bromley, Kent. July 28, 1932, No. 21342. [Class 36.] An earthing-device comprises a metal cup which is adapted to be buried in the earth and in which is confined a deliquescent substance, such as calcium chloride, caustic soda or sodium carbonate, either alone or in admixture with iron or copper oxides or with materials which react with the deliquescent substance. The cup may be pointed or provided with a spike to facilitate its insertion into the earth and may be formed of sheet metal or wire gauze. The deliquescent substance may be retained within the cup, during storage of the device, by a parchment seal, or the substance may be contained in a jar which is removably retained within the cup. In the construction shown, the device, prior to installation, comprises a copper cup a having a terminal d for connection to an earth lead, and in which is removably retained, by a cover g, a jar e containing a deliquescent substance b. A screwed cap f which close the jar e may be riveted to the base of the cup a. The device is prepared for installation by removing the cover g and then emptying the contents of the jar e into the cup a.
Patent GB-260705-A (GB)
Title: Vacuum tank
IPC: F02M37/02
Filed: 1925-08-26
Abstract: 260,705. M³ller, E. Aug. 26, 1926. Vacuum apparatus. - In a vacuum fuel-feeding apparatus for supplying the carburettor of an internal - combustion engine, the air inlets to the vacuum chamber 22 and the fuel chamber 40 are provided with external filtering means with readily-removable covers 25, 34 respectively. The latter filter 35 may be removed for charging the chamber 40 with fuel. Both the suction valve 53 and the air-admission piston valve 52 controlling the ports 12 are operated by a rod 56 on which works a float 62 between stops 51, 63. The lower stop 51 forms the upper end of a fluted foot engaging the outlet from the vacuum chamber to the fuel chamber.
Patent GB-1009856-A (GB)
Title: A method of and apparatus for severing paper boards on the make-up cylinder of a paper board machine
Inventor: KLARMANN LUDWIG
IPC: D21F13/08
Filed: 1962-06-04
Abstract: 1,009,856. Severing paper-board in woundboard machines. PAPIERMASCHINENWERKE FREIBERG VEB. June 4, 1962, No. 21431/62. Heading D2A. Paper-board, including leather board and other tough board, is severed on a make -up cylinder by air jets from nozzles that are displaced axially of the cylinder. The shell 1 of a make-up cylinder has one or more recesses 2 according to the paper-board sizes to be made and extending across the cylinder over the width of the paperboard. Nozzles 3 are arranged in each recess 2 at equal distances apart on a rotatable compressed air supply pipe 5 that is longitudinally movable by mechanical, electrical or other devices. When the paper-board has reached the desired thickness and has been severed by the air jets, the pipe 5 is rotated to the position 9 to lift an edge of the paper-board off the cylinder ready for removal by a guide plate or cylinder. Individual layers of the material may be severed.
Patent GB-297052-A (GB)
Title: Improvements in or relating to filaments for electric incandescent lamps
IPC: H01K1/14
Filed: 1928-07-24
Abstract: 297,052. Falk Stadelmann & Co., Ltd., (Assignees of Neue Gl³hlampen Ges.). Sept. 13, 1927, [Convention date]. Filaments.-A spheroidal or ellipsoidal filament, especially for searchlights or other high-intensity lamps is formed from two calotte-shaped coils, the ends c of the largest turns of which are in direct electric connection. These ends may be welded or riveted together, and may form a support for the filament. Single- or long-crystal tungsten wire is preferably used.
Patent GB-517299-A (GB)
Title: Process for the formation into a shape and dry-distillation of fine dust coal of low caking properties
IPC: C10L5/08
Filed: 1938-07-19
Abstract: 517,299. Coking processes; materials for making coke. OSAWA, H. July 19, 1938, No. 21458. Convention date, July 19, 1937. [Classes 55 (i) and 55 (ii)] 'Compact briquettes of coke or semi-coke are made from low- or non-caking coal or a mixture therewith of caking coal by shaping the moist coal powder into briquettes by pressure, and distilling the shaped masses while embedded in a granular mass of oil shale, coal shale, coarse sand, gravel, iron oxide or sand, or iron filings. The water content of the powdered coal is not less than 10 per cent. and preferably between 20 and 30 per cent. The granular mass has a grain of from 3 mm. to the size of a finger tip, but in the case of iron or iron compounds from .1 mm. to the size of a finger tip. The granular embedding material is sieved from the briquettes and used again.
Patent GB-460042-A (GB)
Title: Improvements in or relating to valves for fluids or semi-fluid substances
IPC: F16K5/08
Filed: 1935-07-29
Abstract: 460,042. Manually - operated valves. DEWRANCE, SIR J. July 29, 1935, No. 21504. [Class 135] In a through-way rotary plug valve of the kind having a spherical valve member 5 cooperable with a pair of aligned seats 4, 4 and means associated with the plug or its operating handle 13 for limiting the rotary movement of the valve, one or both of the seats 4 is of resilient material such as rubber, and has an annular metal insert 4a. The seats are fitted into recesses at the inner ends of the inlet and outlet ports 2, 3 against upstanding ribs 17. The inserts 4a may be L-shaped or dovetailshaped in cross-section. A detachable stem 7, having a squared end 12 fitting in a square recess in the plug 5, passes through a cover 6 provided with a stuffing box 8. A conical surface 9 on the stem makes a fluid-tight seal with a corresponding surface on the cover 6. A handle 13 secured to the stem by a key or a set screw has a depending projection 15 movable between shoulders 16 on the valve casing which define the open and closed positions of the valve. The Provisional Specification describes a modification, in which a depending projection on the handle carries a spring-loaded ball which engages in recesses in a ring on the valve casing and also another form, in which a stop on the valve member engages one or more abutments in an annular recess in the valve casing. The stop may be on the valve casing and the annular recess and abutments in the closure member.
Patent GB-349360-A (GB)
IPC: E02D5/04
Filed: 1930-07-16
Abstract: 349,360. Pile walls. NOLTE, K., 34, M÷llerstrasse. Dortmund, Germany. July 16, 1930, No. 21521. Convention date, July 16, 1929. [Class 68 (ii).] In making sheet-pile members of Z section, the " claw " edge on one member is rolled so that the " bulb " edge of an adjacent member, forming with it a trough-section member, is a tight driving fit in it. In order to facilitate ramming the free " claw " edge f of the trough is opened so as to be a loose driving fit on the free " bulb " edge e of the adjacent trough. In building a wall of these members, the tight joints are located where tension stresses are expected to predominate.
Patent GB-346631-A (GB)
Title: Improvements in and relating to resilient bodies or insertions for mattresses, cushions or the like
IPC: A47C27/06
Filed: 1930-07-16
Abstract: 346,631. Spring upholstery. BULCK, H. VAN DEN and SCHLARAFFIAWERKE HœSER & CO. GES., 29, Kreuzstrasse, Wuppertal, Barmen, Germany. July 16, 1930, No. 21562. Addition to 270,158, [Class 52 (iv), Upholstery &c.]. [Class 52 (iv).] In a spring assemblage of the kind forming the subject-matter of the parent Specification the ends of the springs are interengaged at the highest point m of the end coils and the depressed ends f<2> are fastened to a lower turn of the adjacent spring.
Patent GB-320698-A (GB)
Title: Improvements in trousers, knickerbockers and such like
IPC: A41F9/02
Filed: 1928-07-26
Abstract: 320,698. Kay &. Lee, Ltd., and Jackson, E. A. July 26, 1928. Trousers &c.-Trousers are provided at the waist line with a sheath b in which is housed an elastic belt c, one end of which is anchored at c<1> to the trousers while the other, projecting end is furnished with a number of buttonholes c<2> for engagement with a button a<2>. The projecting end may be furnished with a wire loop for engagement with one of a number or buttons, or the fastening may comprise a double-headed stud passing through holes in both ends of the belt.
Patent GB-1209638-A (GB)
Title: Method and apparatus for measuring the intensity of magnetic fields
IPC: G01R33/24
Filed: 1967-11-17
Abstract: 1,209,638. Optical magnetometer. SINCLAIR RESEARCH Inc. Nov. 17, 1967 [Nov. 17, 1966], No. 21717/70. Divided out of 1, 209, 637. Heading G1A. In an optical magnetometer light from a source 20 Fig. 2 impinging on a detector 26 via a radiation absorption cell 22 is applied also to a matched detector 28 for reference purposes, the paths including collimating lenses 40, 48, polarizers 42, 42<SP>1</SP> and a filter 44 which, if the gas in the cell is helium may pass only 1À08 micron light. The cell outputs which may be resistive or voltaic are compared in for example a Wheatstone bridge and serve to control a variable oscillator 66 producing a depumping frequency for the absorption cell the absorption of which is measure of field strength. Alkali-vapour rubidium and cesium instruments as well as metastable helium are referred to. The arrangement is described in connection with geological surveying in an aeroplane bird.
Patent GB-316138-A (GB)
Title: Improvements in and relating to means for withdrawing air from condensers
IPC: F01B25/00
Filed: 1929-07-15
Abstract: 316,138. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). July 23, 1928, [Convention date]. Turbines. - Air and residual steam is withdrawn from a surface condenser c by a single- or multi-stage steam air exhauster d, the condenser water being led. from the condenser through two tubular feed-water heaters e, f, through which the mixture of air and steam from the exhauster and the water of condensation of this steam flows in the reverse direction, this mixture then passing through a condensing vessel g and a pump h into the main stream of feedwater which is passed by a pump i to the boiler a of a turbine &c. b. Air is exhausted at k to the atmosphere.
Patent GB-662858-A (GB)
Title: Improvements in or relating to automatic steering systems for aircraft
IPC: G05D1/08
Filed: 1949-08-22
Abstract: 662,858. Automatic steering. BENDIX AVIATION CORPORATION. Aug. 22, 1949 [Dec. 17, 1948], No. 21771/49. Drawings to Specification. Class 38 (iv). In an aircraft automatic pilot, heading error signals operate the aileron servo-follow-up system to cause the craft to bank, whereby it turns towards the original heading, and a rate-of-turn signal controls the rudder system. Since banking causes a change of heading this system also stabilizes the craft about its roll axis. In a modification the heading signal may also be applied to the rudder control system to aid the rate of turn signal as the craft swings off course or a bank signal from a gyro vertical may be added in the aileron control circuit. Specification 662,831 is referred to.