baber/WOPTO huggingface dataset:
Patent GB-870224-A (GB)
Title: Sheet materials comprising coated polyethylene
IPC: C08J7/056
Filed: 1957-05-23
Abstract: 870,224. Coated polyethylene film. LOWE PAPER CO. May 23, 1957 [May 24, 1956], No. 5321/61. Divided out of 868,924. Class 140. Sheet material comprising coated polyethylene is prepared by conveying polyethylene film continuously first through an activating zone in which the film is subjected to a surface activation treatment and then through a coating zone in which an hydrophilic coating is applied to the activated polyethylene surface. The term " surface activation " denotes any surface treatment by which the surface characteristics of the polyethylene are modified so that the surface bonds more strongly to hydrophilic substances or more polar when these are applied thereto and includes heat treatment such as with an open flame, oxidation treatments e.g. exposure to ozone, chlorine, certain acids and/or electron bombardment. The hydrophilic coating may comprise starch, carboxymethyl cellulose or a protein e.g. gelatin or casein. Molten polyethylene may be extruded into the form of a film, which may be united to a backing of another material, e.g. paper or boxboard, and then passed through the activating and coating zones. As shown, web of paper 36 is coated with molten polyethylene extruded in the form of a film into the nip formed between roller 37 and cooling drum 38. The exposed polyethylene surface is heated to a high temperature and oxidized by gas burner 40 and then coated with a polar e.g. aqueous pigmented adhesive solution, which is to form the hydrophilic coating, transferred from roller 42 in the nip formed between rollers 42 and 43.
Patent GB-139472-A (GB)
Title: An improved process of producing photomechanical designs, pictures or printing surfaces
IPC: G03F7/095
Filed: 1920-02-23
Abstract: 139,472. Hausleiter, F. Aug. 19, 1914, [Convention date]. Photo-mechanical printing-surfaces, producing; plates and films.-To produce a photomechanical design, picture, or printing surface, a transparent plate coated with a silver gelatine emulsion is exposed and developed with a developer which enables the gelatine at the developed parts to be washed away with hot water. The gelatine remaining is then coloured with a substance which will filter all light that affects sensitive bitumen and the plate is coated with bitumen and exposed from the back. The bitumen picture is developed in the usual way and the gelatine and unhardened bitumen removed by a solvent leaving a positive bitumen picture which can be etched.
Patent GB-469747-A (GB)
Title: Improvements in roller-and-breast bar mills
IPC: B02C4/34
Filed: 1936-02-22
Abstract: 469,747. Roller - and - breast mills. CARRUTHERS, C., TORRANCE, J. R., and TORRANCE & SONS, Ltd. Feb. 22, 1936, No. 5415. [Class 59] In a multi-bar roller-and-breast mill the pressure on the bars is determined by means of a chamber containing fluid which acts directly or indirectly on the individual bars, so that the proportional pressures per square inch exerted by the bars on the roller are in predetermined ratios whilst the absolute amount of such pressure can be varied by varying the fluid pressure in the chamber. As shown, pressure is applied to the grinding bars 3 by plungers 2 operated by fluid or gas in a chamber 1. The pressure of the fluid is regulated by the movement of a plunger 4 operated by a screw 5 and spring 7. The pressure on each bar may be varied by using bars of different thickness or plungers 2 of different area as shown in Fig. 4. The intermediate bars may be arranged to have a non-contacting setting and pressure pockets 8 and relief passages 9 may be provided as described in Specification 469,740. The plungers may be mounted in separate cylinders and the pressure may be applied by weights or a pump. The fluid pressure may act directly on the top of the bars.
Patent GB-621659-A (GB)
Title: Improvements in the construction and arrangement of conveyor type restaurants
IPC: A47F10/06
Filed: 1947-02-25
Abstract: 621,659. Sales and sales service. CONVEYOR CAFETERIAS, Ltd., and LEWIS, T. M. Feb. 25, 1947, No. 5423. [Class 116] [Also in Group XXX] In a conveyer type restaurant of the kind having seats and tables and conveyors for the same, the distance between the seats and tables can be increased at the points of entry and/or exit of the customers. Customers are conveyed on seats e carried on an endless conveyer d which runs parallel with, and at the same linear speed as, an endless conveyer g which constitutes a footrest and an endless conveyer a which carries a series of slabs c which constitute a series of tables, and either the seats e or the slabs c may be moved to facilitate easy exit and entry of the customers. In one embodiment either the slabs c or the seats e are moved transversely of their respective conveyers a, d by means of a fixed cam and a spring pressed follower, at the entry and exit points, and in a further embodiment this transverse motion is effected by movement, at will, by the customer, springs being provided to return the seat or slab to its normal position.
Patent GB-669720-A (GB)
Title: Process for dyeing moulded articles having a basis of an organic derivative of cellulose
IPC: D06P1/92
Filed: 1950-03-03
Abstract: Moulded articles having a basis of an organic derivative of cellulose are coloured by immersion in an aqueous dispersion of a dye, said dispersion also containing a soap and a water-soluble mono-alkyl ether of ethylene glycol or diethylene glycol. Suitable ethers are the methyl, ethyl, propyl and butyl ethers. The preferred ethers are ethylene glycol monobutyl ether or diethylene glycol mono-ethyl ether.  They are used in the bath in amounts 5-10 per cent by weight together with 0.1 to 0.3 per cent of a soap.  In addition 0.1 to 0.3 per cent of an emulsifying agent such as Turkey Red oil may be added to the bath.  The dyeing temperature is preferably 25-75 DEG  C. the time of immersion being from 30 seconds to 2 minutes.  The depth of dyeing is from about 100 to 500 microns.  By addition of film-forming compounds to the dyebath (such as polymethyl vinyl ketone, polyvinyl alcohol and methyl cellulose) an improved gloss is produced on the articles. Suitable dyestuffs include 1 : 4 : 5 : 8-tetramino-anthraquinone, 1 - amino - 4 - hydroxy - anthraquinone, 2-nitro - 4 - sulphonamido - diphenylamine, 4-nitro - phenyl - azo - 21 - methyl - 41 - di-(hydroxyethyl) - amino-benzene, and 4-acetylamino - benzene - azo - 21 - hydroxy - 51-methyl benzene, and they are used in amounts from 0.1 to 2 per cent by weight.  Lignin sulphonate may be used as a dispersing agent.  The cellulose derivative may be an ester such as the acetate, propionate, butyrate, acetate-propionate or acetate-butyrate, or an ether such as ethyl or benzyl cellulose. Suitable plasticizers may be incorporated in amounts from 20 to 40 per cent in the derivative, examples being dimethyl phthalate, ethyl-phthalyl-ethyl-glycollate, triethylene glycol, triphenyl phosphate, tricresylphosphate, diethyl phthalate, di-(methoxy-ethyl)-phthalate, dibutyl phthalate, triacetin, tripropionin, mineral oil, butyl stearate or partially hydrogenated terphenyls.  In an example (all parts by weight) a dyebath containing 1 part of a soap, 3 parts of Turkey Red oil, 90 parts of the monobutyl ether of ethylene glycol, 6 parts of a dyestuff disperse powder of 1 : 4 : 5 : 8-tetramino-anthraquinone and 900 parts of water is heated to 40 DEG  C.  Moulded cellulose acetate buttons containing 30 per cent of diethylphthalate are tumbled therein for 1 minute, washed and dried.
Patent GB-1043791-A (GB)
Title: A velocimeter
IPC: G01S13/58
Filed: 1965-02-08
Abstract: 1,043,791. Radiant energy velocimeters. GENERAL PRECISION Inc. Feb. 8, 1965 [March 31, 1964], No. 5459/65. Heading H4D. Apparatus for determining the relative velocity between two objects, 13, e.g. a travelling sheet of metal and 12, e.g. a fixed observation point, comprises a laser 11 in the object 14, emitting a beam 12 of coherent monochromatic light towards the surface of the object 13 such that it is scattered thereby to give a reflected power pattern 16 comprising many distinct lobes of random amplitude and spacing, and a photodetector 17, receiving the lobes via a lateral slit or hole 18, and feeding its output to a frequency measuring means 21. If the wave front of the beam is plane the lobes are angularly stationary and as the object 14 moves over the object 13 at a velocity V, the passage of the lobes through the slit or hole 18 causes a pulse output from the photodetector 17 having an average pulse repetition rate proportional to V. If the wave front is spherical the lobes will rotate clockwise against the velocity V, at a rate such that the output pulse repetition rate has an average value proportional to 2V. The single slit or hole 18 may be replaced by a grating 22, Fig. 2 (not shown), having a plurality of slits running transverse to the direction of motion, such that each lobe produces a pulse train in the output of the detector 17 having a frequency dependent on the velocity V and the number of slits. Each lobe thus produces a separate pulse train such that the total resultant output from the detector is also a pulse train having a centre frequency dependent on said velocity and number. This centre frequency may be determined by frequency tracker means. In an embodiment using radio waves, Fig. 3 (not shown), used for determining the velocity of an aircraft 34 over the ground 33, the scattered reflected radio energy lobes are received by a plurality of longitudinally distributed antennµ acting in a manner equivalent to the plurality of slits in the grating 22. This radio energy embodiment may be modified so that the velocity vector V may be determined in terms of its component V AH  along the aircraft's axis and its drift component V CH , Figs. 5 and 6 (not shown). Two velocimeters 120 and 121, such as shown in Fig. 3, are mounted with their axes inclined at an angle # either side of the aircrafts' axis, to give component velocities V D  and V<SP>1</SP>D. It can be shown that the angle 8 that the velocity V makes with the aircraft's axis is given by: and that These functions may be determined by a computer. This last embodiment may also be applied to the light energy embodiments described. The invention is applicatable to sound energy.
Patent GB-799291-A (GB)
Title: Improvements in getters
IPC: H01J7/18
Filed: 1955-02-24
Abstract: 799,291. Discharge apparatus. S. A. E. S. SOC. APPARACCHI ELETTRICI E SCIENTIFICI. Feb. 24, 1955 [Dec. 3, 1954], No. 5549/55. Class 39(1). A getter consists of a welded framework of which at least two members 1, 2, contain getter material, the other two members 3, 4 being supports completing a single closed circuit for induction heating. More than two of the members may be getter-containing, and the members may be curved, and may form other than rectangular frameworks.
Patent GB-985293-A (GB)
Title: Improvements in or relating to the manufacture of tetrazene
Inventor: TAYLOR GEORGE WILLIAM CHARLES
IPC: C06B23/00
Filed: 1960-02-17
Abstract: Tetrazene, ON.NH.NH.C(: NH).N: N.NH. NH.C(: NH).NH2 is prepared in granular form by reacting a water soluble nitrite and an aminoguanidine salt in an aqueous solution in the presence of a dispersing agent which disperses finely divided solids in an aqueous medium whereby granular tetrazene results. The dispersing agent may be an organic sulphonic acid, e.g. an alkyl-acyl sulphonic acid or a salt thereof.  The nitrile may be sodium nitrile and the aminoguanidine salt is aminoguanidine sulphate.
Patent GB-637897-A (GB)
Title: Improvements relating to holders for toilet pads, memo pads, diary pads and the like
IPC: B42D5/00
Filed: 1948-02-25
Abstract: 637,897. Multi-leaf pad holder. McCLEERY, J. B., and ARMSTRONG & CO., Ltd., A. Feb. 25, 1948, No. 5589. Convention date, Nov. 4, 1947. [Classes 16 and 146 (i)] A holder for a toilet-pack, memo-pad, diary pad or other multi-leaf pack comprises a simple cardboard, paperboard, &c. blank 1 divided by equi-spaced creases 4, 6, 7, 8 into a back support 2 depending from a double-thickness suspension portion connected by a top portion to a double-thickness front portion ; cut-out tabs 10, 11 in the latter part are bent to pass through slots in the pack and corresponding slots 5 in the back support 2, behind which they are bent over to secure the pack. As shown the tabs 10, 11 have V-shaped locking parts cut out at their rear bends. A front flap 3 may extend beyond a further crease 9 and an eyelet may be provided at 12 in the suspension portion. The pack slots may be cut at 13b to facilitate detachment.
Patent GB-487522-A (GB)
Title: Improvements in and relating to scoops and cinder sifters
IPC: F24B15/00
Filed: 1937-02-25
Abstract: 487,522. Sieves. BELL & CO.. Ltd., A., and BELL, N. M. Feb. 25, 1937, No. 5615. [Class 117] [Also in Group I] A combined scoop and cinder sifter consists of a box-like receptacle 10 divided by a grating 20 into two compartments each of which is provided with an independent door or flap 12, 13. Cinders and ashes are scooped into the lower compartment, the doors are then closed and the device inverted. The materials in the two compartments can be removed separately by opening the corresponding door. The grating 20 may be fixed permanently in position or it may be a sliding fit between brackets 21, 22.
Patent GB-725441-A (GB)
Title: Automatic braking apparatus for aircraft multi-wheeled undercarriages
IPC: B64C25/46
Filed: 1953-02-28
Abstract: 725,441. Wheel brakes on aircraft. DUNLOP RUBBER CO., Ltd., and MORTIMER, F. R. June 26, 1954 [Feb. 28, 1953], No. 5671/53. Class 4. [Also in Group XXXIV] An automatic braking apparatus for the axially aligned wheels of an aircraft multi-wheel undercarriage comprises means rotatable by said wheels at an angular velocity determined by the wheel having the lowest angular velocity and a rotary inertia mechanism driven by said means to automatically control the supply of pressure fluid to the brakes associated with said wheels. The means rotatable by the twin-wheel 1, 2 comprises a roller 6 rotatably associated with each wheel, each roller driving a clutch-plate 9 having a spring 10 wound helically around the outer periphery thereof. One end of each spring 10 is secured to its clutch-plate, the other end being free. The clutch-plates, with springs attached, are fitted one in each end of a cylinder 11. The clutch-plate springs 10 provide a light torque in one direction, i.e. for forward movement of the aircraft, and a heavy torque in the opposite direction. When the wheels are rotating normally, the light torque drives the cylinder 11 which in turn drives a rotary inertia mechanism 12; e.g. of the type described in Specification 676,708, [Group XXXIV], to automatically and selectively control the supply of pressure fluid to the brakes of the two wheels. However, if one of the wheels decelerates relative to the other wheel, i.e. if it slides or skids, then the associated clutch plate will decelerate with the wheel and this will create a heavy torque at one end of the cylinder 11 which overcomes the light torque at the other end of the cylinder to decelerate the cylinder at the same rate as the skidding or sliding wheel. This, in turn. decelerates the rotatable housing 13 of the rotary inertia mechanism 12 which, in turn, operates the automatic braking apparatus to release the braking pressure applied to the brakes of both wheels until the skidding or sliding condition of the one wheel is rectified. In a fourwheel landing bogie each pair of axially aligned wheels may drive a rotary inertia mechanism in the manner described, i.e. one mechanism driven by the trailing pair of wheels to control the brakes thereof, and one mechanism driven by the leading pair of wheels to control the brakes thereof.
Patent GB-546573-A (GB)
Title: Self locking supporting struts for vehicles
IPC: B60S9/04
Filed: 1941-05-05
Abstract: 546,573. Rest bars. HANDS (LETCHWORTH), Ltd., and FARRINGTON, B. C. D. May 5 1941 No. 5805. [Class 108 (ii)] A rest bar or support for a vehicle consists of a strut A slidably mounted in trunnion B pivoted in a bracket C fixed to the frame D, the end of the strut being adapted to engage holes in cam plates J, L to lock it in the vertical or horizontal position. A spring G forces the strut into the holes and stops K limit its angular movement and facilitate engagement with the holes.'
Patent GB-990158-A (GB)
Title: Improvements in spades and blades therefor
IPC: A01B1/02
Filed: 1961-02-16
Abstract: 990,158. Spades. G. C. BARKER. Feb. 1, 1962 [Feb. 16, 1961], No. 5828/61. Heading A1B. [Also in Division B4] A blade for a spade comprises a cutting edge strip 15 and two side strips 16, 17 the space between the side strips being open. A handle 13 is riveted in a socket 12 or secured between two curved metal strips extending transversely to the blade. The cutting edge 11 of the blade may extend at an angle to the side edges. The blade may be formed by cutting away the central part of a metal plate or by brazing or welding together the strips 15-17.
Patent GB-216577-A (GB)
Title: Improvements in rotary drying machines
IPC: F26B17/28
Filed: 1923-02-28
Abstract: 216,577. Reavell, J. A., and Kestner Evaporator &. Engineering Co., Ltd. Feb. 28, 1923. Film evaporators.-A rotary internally-heated drum 1 is supplied with liquid to be dried from a trough 7, containing agitators 10 and having its inner side formed by a spring steel blade 8. The dried material is removed by a series of thin blades 12, formed preferably of stainless steel, held against a bar 14 by backing plates 16. The blades 12 have wide ends, and are arranged with alternate blades in front of the others so that the edges overlap. The dried material falls into a trough 18 which may have a heating-jacket 23 and is removed by a worm conveyer 19. A definite level of liquid may be maintained in the trough 7 by means of a float valve. For drying in vacuo, the apparatus is enclosed in a casing connected through a surface or jet condenser to a vacuum pump.
Patent GB-433873-A (GB)
Title: Aeroplane landing systems employing electromagnetic waves
IPC: G01S1/02
Filed: 1934-02-22
Abstract: 433,873. Directive wireless signalling. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Feb. 22, 1934, No. 5844. Convention date, May 10, 1933. [Class 40 (v)] In slipway landing systems where the aviator takes the beam 1 ... 5, Fig. 2, along a curve of constant field-intensity, an additional wireless or acoustic signal marked 6 is provided to indicate when the descent should commence. This obviates the necessity for maintaining the sensitivity of the receiving apparatus absolutely constant throughout the whole course of the flight. On receipt of the warning signal at the point marked 7, the pilot descends along the path which " holds " his indicator at the inclination then shown. Alternatively he may descend along a line which intersects a sequence of landing curves, as shown in dotted lines in Fig. 3. In this case the warning signal is used to bring into operation a clock-controlled shunt resistance which gradually varies the sensitivity of the indicator, so that the pointer keeps steady along the dotted-line path. Or the scale may be gradually moved relatively to the pointer to ensure this result. Specifications 406,144 and 415,784 are referred to.
Patent GB-267127-A (GB)
Title: Improvements in mercury vapour lamps
IPC: H01J61/20
Filed: 1927-03-02
Abstract: 267,127. Geffcken, H., and Richter, H. March 2, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Low-pressure metallic-vapour apparatus.- Mercury-vapour lamps are charged with gas at such pressure that the potential drop in the arc is increased without altering the colour of the emitted light. The pressure is between the two pressure ranges of known fillings for facilitating starting the arc without tilting and for correcting the colour of the emitted light. A gas or mixture of gases of low heat-conductivity and high ionization-potential may be used. The filling may be of argon at a pressure above 10 mm; for instance, at a pressure of 10-15 mm in a 220 volt lamp with an arc 5 cms. long. As the gas pressure is increased, the potential drop increases and becomes impractically high at 300 mm. Lamps can thus be made shorter for a given voltage, the period of " burning-in " is reduced, the resistances in the lamp circuit can. be made high to reduce the short-circuit ignitioncurrent, a constricted arc due to the poor conductivity of the gas is produced, and ultraviolet rays may be produced from the argon spectrum.
Patent GB-514935-A (GB)
Title: Improvements in control means for ice cream freezing machines
IPC: A23G9/22
Filed: 1938-05-18
Abstract: 514,935. Automatic control systems. STEWART AUTOMATIC FREEZERS, Ltd. May 18, 1938, No. 5927/39. Convention date, May 25, 1937. Divided out of 514,909, [Group XIII]. [Class 38 (iv)] [Also in Group XIII] Temperature.-In an ice-cream freezer comprising a freezing cylinder cooled by a motordriven refrigerating machine and fitted with beaters driven from a separate motor, the operation of the motors is controlled by a thermal element 92, let into a curved recess in the outer face of the end wall of the freezer and adapted to control a switch 97 in a lowcurrent circuit 99, 104, which through relays 106, 197, 108 selectively operates the refrigerating motor 100 and the beater motor 82. A multiple switch manipulated from the front of the freezer cabinet is provided with pairs of contacts 114, 115, the former when closed serving to operate the relays 106, 107 to energize both motors and the latter serving to operate the relay 108 only to energize the beater motor after the thermostat has cut out the refrigerating motor, the beaters then delivering the frozen product. A main manual switch 113 is provided for overriding the thermostatic control.
Patent GB-656729-A (GB)
Title: Improvements in or relating to beryllium alloy steels and articles of manufacture produced therefrom
IPC: C22C38/22
Filed: 1948-02-27
Abstract: An alloy tool and die steel has the following composition: Cr 0.5-14.0 per cent; Mo 0.5-3.0 per cent; Cu 0.25-2.5 per cent; Be 0.05-0.3 per cent; C 0.1-3.0 per cent; Fe, and impurities, the balance.  The alloy may contain Mn 0.75-3.5 per cent and Si 0.15-2.0 per cent. Co 0.1-1.0 per cent may also be present.  The alloy may be air cooled from 1450-1525 DEG C to form a hardened article.  The Specification refers, for purposes of comparison, to a specific alloy containing 0.32 per cent Ni, to alloys free from Be and to alloys free from Be and Cu, but otherwise of the composition set forth above.
Patent GB-1104203-A (GB)
Title: Improvements in or relating to golf practice apparatus
IPC: A63B69/36
Filed: 1966-02-11
Abstract: A golf-swing practice apparatus comprises a support (I) for a club, a support (II) for I and a support (III) for II; wherein I rotates about the club, II rotates about an axis* passing through a position at or near the player's hands and III rotates about an axis passing approximately through the player's hips, III being attached to a fixed support (e.g. a wall), and the axis* being provided with means, e.g. a ball and groove arrangement, for signalling the impact movement to the player.