baber/WOPTO huggingface dataset:
Patent GB-335881-A (GB)
Title: Improvements in trailer mowers
IPC: A01D69/00
Filed: 1929-09-21
Abstract: 335,881. International Harvester Co. of Great Britain, Ltd., (International Harvester Co.). Sept. 21, 1929. Divided on 332,457. Mowing-machines.-A mowing-machine of the type in which a front frame part rigidly attached to the draw bar of a tractor has pivoted thereto the rear frame part carrying the cutter bar and supported on carrying wheels has the lever 78 for effecting the vertical adjustment of the cutter carried by the rigid front part of the frame. The frame 16 is triangular in shape, having brackets 17 at its rear angles, each bracket being provided with a vertical collar 18 to take a spindle 57 carrying a yoke on which a trailing wheel 54 is mounted. The converging sides of the frame are secured to a housing 24 pivotally mounted by a loosely threaded connection on an upright housing 19 rigidly attached by draw bars 20 to the tractor. The knife bar 34 and the associated cutting devices are supported by a pivoted coupling rod 27 and a main coupling arm 29 that is pivoted in the rear member of the frame in line with a cutter driving shaft carried in the housing 24 and driven through bevel gear from a vertical shaft in the housing 19, this shaft in turn being driven through bevel gearing from a cardan shaft 39 driven from the motor. The knife bar may be tilted to adjust the height of the cut by a hand lever 38. The lever 78 for swinging up the knife bar and its associated devices is pivoted in the cap of the housing 19 and is rigidly secured to an arm 87 connected by a link 89 to a spring- pressed collar 81 slidable on a rod 80. The collar is connected by a chain 73 and rod 72 with the lifting lever 69 for the knife-bar. A spring 91 assists in lifting the knife-bar. The trailing wheels 54 normally move along a fixed path but can move to caster when the frame swings about its pivot, being yieldably held in position by spring-pressed member 64 engaging in recesses in caps secured to the spindles 57. Specification 332,457 is referred to.
Patent GB-515187-A (GB)
Title: Improvements in or relating to the manufacture of tubing from thermoplastic material
IPC: B29C53/48
Filed: 1938-05-26
Abstract: 515,187. Cellulose &c. tubes. DU PONT DE NEMOURS & CO., E. I. May 26, 1938, No. 15821. Convention date, May 27, 1937. [Class 99 (ii)] [Also in Group V] A tube is formed by drawing a softened strip of thermoplastic material through a heated forming die 1 and directly thereafter through a passage 7 of identical cross-section in a cooling chamber 5. The inlet and outlet pipes 12, 14 of the cooling chamber are pivotally mounted in bearings 18, 17 so that the apparatus can be swung round horizontally to take the die out of a heating bath 22 to enable a strip of thermoplastic material having a tapered end to be attached by a pin to one end of a rod which is passed through the die and the cooling chamber. The apparatus is then swung vertically to immerse the strip in the heating liquid and soften it and the rod is pulled vertically to pull the strip through the forming die. The lower part of the passage through the die is formed as a truncated cone and in it is mounted a tapering insert having a pair of passages 32 against which the edges of the strip are guided until they abut. The strip is cut slightly wider than the finished tube to permit the tension to force its edges together and the sides of the strip are bevelled to form a square seam. After passing through the chamber the tube is placed in cold water and after drying the tube its edges are cemented together by passing it over a metallic spreader whilst immersed in a cement or solvent. The tube is then again dried and finally softened to eliminate any longitudinal stretching of the material. The thermoplastic material may be cellulose acetate or nitrate or a vinyl resin such as an 'acrylate or an alkacrylate resin. The .cement or solvent may be a rubbercontaining adhesive chloroform, a mixture of acetone or alcohol or a solution of cellulose acetate or nitrate and synthetic resin. Specification 456,908, [Group V], is referred to.
Patent GB-1005957-A (GB)
Title: Improvements in or relating to metal oxide-fatty acid reaction products
IPC: C10L1/18
Filed: 1962-04-26
Abstract: Metal oxide-fatty acid salts and complexes of specified metals prepared as described in Division C2 are used as anti-corrosion additives in an amount of 0.05 to 6.0 mol. equivalents in fuel oils, particularly in those containing vanadium, sulphur and sodium as impurities. Specified metals are titanium, zirconium, hafnium, thorium, germanium, tin, niobium, tantalum, molybdenum, tungsten, uranium, the rare earths including cerium, copper, beryllium, zinc, cadmium, mercury, aluminium, yttrium, gallium, indium, lanthanum, mannganese iron, cobalt, nickel, calcium, magnesium, strotium and barium.  Fatty acids include normal and branched chain aliphatic acids, unsaturable acids, acid substituted with hydroxy and keto groups, alicyclic acids such as chanemoogra-oil acids and naphthenic acids and also tall oil.ALSO:Metal oxide-fatty acid salts and complexes are obtained by mixing a hydrated oxide of titanium, zirconium, hafnium, thorium, germanium, tin, niobium, tantalum, molybdenum, tungsten, uranium, the rare earths including cerium, copper, beryllium, zinc, cadmium, mercury, aluminium, yttrium, gallium, indium, lanthanum, manganese, iron, cobalt, nickel, calcium magnesium, strontium or barium with a fatty acid having at least 6 carbon atoms until a phase separation is effected and then removing the oil phase.  Fatty acids include normal and branched chain aliphatic acids, unsaturated acids, acids substituted with hydroxy and keto groups, alicyclic acids such as chaulmoogra-oil acids and naphthenic acids and also tall oil. The salts are oil-soluble, and the complexes which may be made with 1 to 25% equivalent of acid are oil-dispersible.  The products may be added to fuel oils which contain vanadium, sulphur and sodium as impurities.  Metal oxides which are amphoteric may be prepared in hydrous form by precipitating a salt of the metal with a base, whereas basic oxides may be dispersed directly in water.  If the acid is diluted with an organic solvent such as fuel oil, kerosene or a hydrocarbon then the product is usually a liquid.
Patent GB-554221-A (GB)
Title: Improvements relating to circuits controlled by means of variable reactors
IPC: G05F1/14
Filed: 1942-11-11
Abstract: 554,221. Controlling A.C. by variable reactors. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 11, 1942, No. 15942. Convention date, Nov. 18, 1941. [Classes 38 (ii) and 38 (iv)] Current in a load circuit 4 is controlled by a pair of variable reactors 1, 2 connected respectively in series and in shunt with the load, the two reactors being magnetically opposed and having a core 5 movable from one into the other. Thus when the impedance of the series reactor is increased to a maximum by the presence of the core, the impedance of the shunt reactor is reduced below a nominal minimum (represented by mere absence of the core) due to cancellation of its flux by that produced by the series reactor.
Patent GB-1421403-A (GB)
Title: Pneumatic tyres
IPC: B60C11/03
Filed: 1973-04-03
Abstract: 1421403 Pneumatic tyre treads MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 3 April 1973 [4 April 1972] 15969/73 Heading B7C A pneumatic tyre has a tread comprising a plurality of continuous circumferential ribs 10-13 separated from one another by zig-zag circumferential grooves 20-22, and blind grooves 30-35 which extend from the circumferential grooves into the ribs and which have flared portions G at their junctions with the circumferential grooves, the circumferential ribs being provided with incisions 40, 41, the blind grooves and incisions being so arranged that the ribs have edge portions N which are less rigid than their central portions M. In the embodiment shown, blind grooves 37, 38 also extend from the edges of the tread into the side ribs 12, 13; the grooves 37, 38 are prolonged into the side walls 2, 3. The circumferential grooves 20-22, the blind grooves 30-35, and the incisions 40, 41, are all of the same depth; the incisions 40, 41 are connected by surface cuts 42, 43 having a lesser depth.
Patent GB-254333-A (GB)
Title: Sound recording or reproducing devices
IPC: H04R1/16
Filed: 1925-09-22
Abstract: 254,333. Standard Telephones & Cables, Ltd., (Assignees of Harrison, H. C.). May 29, 1925, [Convention date]. Drawings to Specification. Diaphragms.-Consists in detail improvements in phonographic recording or reproducing soundboxes, in which the diaphragm is connected to the stylus-bar by a spider, which has flexible radial arms attached to the diaphragm and is secured at its centre to the bar. Two forms of sound-boxes, made in accordance with the invention, and constructed as described in Specification 252,657 are described and shown. In each instance the diaphragm employed is corrugated in a special manner.
Patent GB-921070-A (GB)
Title: Improvements in the production of distorted images on photographic plates or films, particularly for making printing blocks
IPC: G03F1/00
Filed: 1961-05-04
Abstract: 921,070. Production of distorted images. R. H. BROWN. May 4, 1961, No. 16157/61. Classes 98 (1) and 98 (2). Distorted images on photographic films or plates are produced by photographing an opaque image on a transparent base by transmitted light using a slit shutter placed between base and film, said shutter being moved at constant speed the base being moved simultaneously with and relatively to the shutter during exposure. Apparatus for carrying out the above method is shown in Fig. 1, where the base 13 is placed in the vertically movable slide 12 fitted in the horizontally movable slide 11. The slide 11 is moved by the motor 16 via the spindle 15 whilst the shutter 4 having a slit 5 in frame 2 is moved by motor 6 via spindle 7. The slide 12 is attached to arm 23 and roller 22 and is moved vertically by moving up the lever 18 adjustably pivoted at 19. The base 13 is photographed by transmitted light, the camera being on the same side as the shutter and the base may be moved both horizontally and vertically at the same time to produce various distorted images.
Patent GB-979593-A (GB)
Title: Frequency modulated radio altimeter
IPC: G01S13/26
Filed: 1962-04-27
Abstract: 979,593. Radio altimeters. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. April 27, 1962 [April 29, 1961], No. 16159/62. Heading H4D. A radio altimeter of the type transmitting a frequency modulated signal and mixing the resulting echo signal with the contemporaneous transmitted signal to produce a beat frequency signal, which is passed through a peak clipper stage, whereby the altitude may be determined by counting the cross-over points of the signal at the clipping level, is characterized by the variation of the threshold level of the peak clipper in a repetative staircase manner, with the variation having a repetition frequency substantially less than the modulation frequency. If in Fig. 2 the transmitted signal is represented by the stationary vector #E 1  and the echo signal by the rotating vector #R 1  the angle of rotation of vector #R in one frequency sweep is given by where AF is the frequency sweep above and below the average frequency, and T is the go and return time of the transmitted signal and echo. Since where H is the altitude, we have If the waveform of the beat frequency signal is as shown in Fig. 2 counting the number of cross-over points of the signal on axis OD yields a measurement of # with a possible inaccuracy of #. The invention therefore contemplates counting the cross-overs at increasing levels such as O<SP>1</SP>D<SP>1</SP>. A circuit for doing this is shown in Fig. 4 with associated waveforms shown in Fig. 3. The beat frequency signal, from mixer 2 and amplifier 3, is fed to a peak clipping stage 4 which has its peak clipping threshold controlled by a generator 5 to follow the staircase pattern shown at S, Fig. 3. The staircase is repetative at a frequency of ## which is substantially lower than the modulation frequency fr of the beat signal and has a peak amplitude made equal to the peak value of the beat signal by means of an amplitude comparator 6, fed with signals from the amplifier 3 and generator 5 and generating a signal controlling generator 5. The counter 7, counts the total number of crossovers at the succeeding staircase levels and gives an altitude indication having an error corresponding to an error in # equal to In order that the beat signal may contain at least one full sine wave at zero altitude a length of feeder may be inserted between the transmitter and the transmitting aerial or between the receiver and the receiving aerial.
Patent GB-547097-A (GB)
Title: Improved apparatus for suspending and supporting weight of bedclothes over sleeper in bed
IPC: A47C21/02
Filed: 1940-11-06
Abstract: 547,097. Beds. GARD, H. J. Nov. 6, 1940, Neo. 16185. [Class 52 (ii)] A device for supporting bedclothes over a patient comprises flat plates C hinged to members D clamped to the spring mattress, and bracket members B having flaps B<2>, Fig. 4, removably fitted in slots E in the plates C and supporting a single or divided rod member A extending across the bed. The member A may be hinged in the brackets B by pins B<3>, Fig. 4, on the brackets engaging slots in the ends of the rod A and be secured in an upright position by pin and notch engagement at A<1>, the latter being readily releasable. The plates C may be raised about their hinges to the clamps to enable the clothes to be tucked and held beneath them.
Patent GB-1095198-A (GB)
Title: Dyeing and/or printing polypropylene textile material
Inventor: DEHNERT JOHANNES
IPC: C09B45/00
Filed: 1965-04-15
Abstract: Polypropylene containing 0.001% to 3.0% by weight of a metal compound capable of forming chelate complexes is dyed and/or printed using monoazo dyes of the general formula:-  <FORM:1095198/D1-D2/1> wherein X is hydrogen, a carboxylic acid group, an alkyl group or an aryl group; and Y is a radical derived from a coupling component free from ionic water solubilising groups, e.g. a phenol, enol, pyrazolone or an N, N\sv dialkylaniline radical free from complex forming groups. The Y radical may bear non-ionic substituents e.g. alkyl, cycloalkyl aryl, alkoxy, halogen or acylamino groups.  The metals used which are present in the form of organic or inorganic compounds are Cr, Ni, Zn, Co, Cu, Cd and Al.  Dyeing preferably at pH 4 to 5 using acetic acid may take place at 70 DEG  - 130 DEG C from a long liquor or by impregnation with a short liquor at room temperature, drying at 70 DEG  to 100 DEG C and then heating to 130 DEG C.  The liquors may contain the conventional dispersing and emulsifying agents.  Printing may take place by conventional film, screen or roller printing.  Many examples of the dyes used are specified.
Patent GB-709442-A (GB)
Title: Improvements in and relating to bast and like fibre decorticating machine
IPC: D01B1/22
Filed: 1951-07-09
Abstract: 709,442. Decorticating-machines. GARDELLA, A., and GARDELLA, C., [trading as SOC. COLL A. GARDELLA & F. LLO]. July 9, 1951, No. 16206/51. Class 120(1) A bast or leaf fibre decorticating machine - comprises a plurality of operating devices including at least two sets of scutching members, each set being composed of a revolving scutching drum provided with a plurality of hammering members and of a corresponding material-supporting or anvil roller; the feed of the material past the scutching drums is effected by a substantially vertical train of juxtaposed rollers, revolving alternately in opposite directions, a sheet of fibrous material passing from a longitudinal half of each feeding roller to the opposite half of the next whereby the material passing alternately from one side to the other of the train of feed rollers exposes alternately both its sides to the operating devices, including the scutching drums. As shown, Fig. 1, material is fed endwise by a slatted conveyer 7, and a gripping roller 8, from a hopper 9, past a spring-loaded shutter 11 providing a controllable outlet passage 10, to spring-loaded breaking and crushing rollers 2, 2' and 3, 3', rollers 2, 2<SP>1</SP> being fluted lengthwise or circumferentially. From rollers 3, 3<SP>1</SP> the material passes to and fro between feeding and supporting rollers 16, 16<SP>1</SP> of which roller 16<SP>1</SP> is mounted in fixed bearings while rollers 16 are spring-pressed thereagainst from above and below. While supported on rollers 16, 16<SP>1</SP>, the material is treated by scutching drums 17 and brush drums 26, the axes of which are set slightly forward of the axes of the corresponding supporting rollers 16, 16<SP>1</SP>. The setting of each drum 17 or 26 from the corresponding roller 16 is controlled by screw means 23. From rollers 16 the material is delivered by a belt 29 and swinging arm 30 which folds the sheet of fibres. The axes of rollers 16, 16<SP>1</SP> may lie in a common vertical plane or on two parallel or diverging vertical planes, and the rollers may be of the same or of increasing size, the peripheral speed of the rollers being constant or increasing slightly towards the delivery end. Drums 17 comprise beaters 18, Fig. 6, mounted in dovetail grooves and pressed outwardly by springs 19 or by centrifugal force; alternatively beaters 18 may be fixed in the drums. The scutching surface may slope towards the drum in the direction of scutching, as at 18<SP>1</SP>. The bristles 28 of drums 26, Fig. 10, are of equal length and are inserted in sectors 27 at the same angle with respect to the tangential planes so that their ends lies on a cylindrical surface. Sprays 32 provide for washing of the material during treatment. The machine may include, in addition to the scutching drums, any desired number of breaking, crushing, hackling, brushing and stripping, burr-separating or other operating devices fitted on drums or cylinders.
Patent GB-240907-A (GB)
Title: Improvements in and relating to pleating machines
IPC: D06J1/06
Filed: 1924-07-07
Abstract: 240,907. Miller, J. July 7, 1924. Pleating.-In a pleating-machine of the kind adapted to produce combinations of box and knife pleats the usual reciprocating pleating knife can be controlled, to move either up or down, without stopping the machine. The knife carrier A is held horizontally, by a spring A', in engagement with a stop C on a rod B. A link G is reciprocated idly by a cam-operated rod D, and can be clutched to the rod B by means of a lever F. When the lever F is advanced to clutching position, the rod B is lowered by the rod D and the spring A<1> causes the knife to pleat upwardly. The lever F is advanced or retracted, to control the movements of the knife and consequently the sequence of box and knife pleats, by a lever N connected at its upper end to a pawl L. The latter is adjustable by a handle K to engage or clear pegs Q slidably arranged in a wheel J. The pegs are individually slidable so that any or all may be moved into the path of the pawl. The wheel J is intermittently rotated by a pawl S. As it rotates any peg Q suitably adjusted engages the pawl L and rocks the rod N to move the lever F so as to clutch the rod B to the link G and cause an upward pleat.
Patent GB-164744-A (GB)
Title: Improvements in or relating to crank gears for locomotives
IPC: B61C9/40
Filed: 1921-06-13
Abstract: 164,744. Kand¾, K. Aug. 30, 1916, [Convention date]. Driving-gear of crank-type, coupling-rods, and like mechanism, arrangement of.-The motors m<1>, m<2>, mounted on the frame a have their cranks d' connected by a coupling-rod e which is connected by links r, R to a lever n. The lever n is pivoted at g to the crank-pin of the driving wheel o and is connected by rods j to the cranks c<1> of the wheels o<1>. The links r, R are arranged so that their point of intersection lies in the horizontal plane of the rods j. The lever n may be pivoted to one of the rods j instead of to the crank-pin g.
Patent GB-897598-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B69/22
Filed: 1960-05-09
Abstract: 897,598. Sewing-machines. NECCHI S.p.A. May 9, 1960 [June 5, 1959], No. 16293/60. Class 112 [Also in Group XXIV] A sewing-machine provided with means for selectively driving the machine at a low or a high speed has mechanism for stopping the machine when the needle is at a particular position, this mechanism being operable only when the machine is being driven in the low speed gear. The upper and lower shafts 3, 4 have toothed pulleys 1, 2 which are interconnected by a belt 5. A pulley 7 is driven, from means not shown, by a belt 22 and drives the shaft 3, and hence the shaft 4, at low speed by a belt 8 engaging a pulley 6, loosely mounted in the shaft 3, which drives through a free-wheel connection the handwheel 11 which is fast in the shaft 3. When a lever 24 is moved anticlockwise about its pivot 24<SP>1</SP> by a cam 25 clutch members 17 and 19 are engaged by a spring 18, the pulley 7 then being connected to the shaft 4 to drive it and the shaft 3 at the high speed. The freewheel mechanism connecting the pulley 6 and the handwheel 11 comprises a spring 10 wound around a cylindrical surface on the pulley. One end of the spring is secured to a stud 11<SP>1</SP> on the handwheel, the other end being secured to a ring 12 rockable around the axis of the handwheel between stops 15, 16 on the latter. The stop 16 comprises a rubber pad. The machine may be stopped when the needle is at the predetermined position by the engagement of an abutment 32 with a projection 31 on the ring 12. The abutment is formed on a lever 36 pivoted to the machine at 34 and spring biased into the position where the abutment engages the projection. The cam 26 controlling the position of the lever is mounted on the same operating member as, and is thus rigid with as the cam 25 controlling the speed change lever 24, this operating member being provided with a detent defining three positions corresponding to (Figs. 4 to 6, not shown) (a) engagement of the high speed gear, the abutment 32 being withdrawn, (b) engagement of the low speed gear, with the abutment withdrawn and (c) engagement of the low speed gear together with the engagement of the abutment 32 with the projection 31 to stop the machine. As shown, the abutment stops the machine with the needle raised, but changing the angular position of the handwheel on the shaft 3 permits stoppage with the needle at any other desired bevel.
Patent GB-165325-A (GB)
Title: Process for the manufacture of detonating fuse cords
IPC: C06C5/04
Filed: 1920-06-16
Abstract: 165,325. Friederich, W. June 16, 1920. Explosives.-The nitrocompounds derived from hexamethylenetetramine and nitroenneaheptite are used separately or mixed together for making detonating fuze cords having a spun covering. Paraffin or refined naphtha residues may be added to phlegmatize the fuze, and black powder to make the fuze capable of burning or detonating at will. Specification 15355/14 is referred to.
Patent GB-689154-A (GB)
Title: Tea extraction
IPC: A23F3/18
Filed: 1951-07-10
Abstract: A tea extract is made by passing water (or a tea infusion with or without corn syrup) through tea in a battery of five sylindrical extractors operated on the countercurrent principle, the extractors being charged with tea, evacuated to 28 or 29 inches of mercury gauge vacuum and then filled with carbon dioxide to a pressure of 2 pounds per square inch.  The extract may be concentrated or dried.
Patent GB-595227-A (GB)
Title: Improvements in and relating to tobacco pipes
IPC: A24F1/22
Filed: 1945-06-27
Abstract: 595,227. Tobacco pipes. VINCENT, A. June 27, 1945, No. 16389. Convention date, Dec. 5, 1941. [Class 130] A tobacco pipe is provided with one or more air channels a parallel to the smoke channel and extending into the interior of the base of the bowl d, the air entering through orifices c. A metallic condenser h having heat radiating fins may he situated in the smoke channel.
Patent GB-457639-A (GB)
Title: Composite piston rings
IPC: F16J9/20
Filed: 1936-06-12
Abstract: Piston-rings are made from a copper alloy containing 3 per cent of silicon, 1 per cent of zinc, and a trace of lead.