baber/WOPTO huggingface dataset:
Patent GB-321900-A (GB)
Title: Improvements in or relating to the teasing of flax and jute ropes and the like
IPC: D01G11/02
Filed: 1929-04-02
Abstract: 321,900. Mackenzie, R. April 2, 1929. Openers &c.-A machine for teasing ropes of flax, jute, &c. comprises a drum 1 fitted with staggered rows of main spikes 6 and short spikes 7, mounted on spaced plates 5, and a concave segment 10 fitted with short spikes 8 and main spikes 9 co-operating with the spikes on the drum. The ropes are fed by an apron 28 and fluted rollers 12, 13. The drum is enclosed in a casing 31. The teased material is ejected through an opening 34. The feed-rollers are driven by a crossed belt 17 from the drum shaft 2, and the apron by a belt from the shaft 14 of the roller 12. According to the Provisional Specification the spikes may be triangular in shape and may be either separate from one another or continuous,
Patent GB-237352-A (GB)
Title: Improvements in and relating to the headlights of vehicles
IPC: B60Q1/14
Filed: 1924-04-25
Abstract: 237,352. Ayer, J. April 25, 1924. Vehicle !amps.-In motor-car headlights of the kind fitted with a parabolic reflector divided so as to have a stationary forward reflector f and a pivoted rear portion i adapted to be tilted downwards to prevent or diminish glare, the lamp bulb e is mounted in a threaded socket b which is adjustable for focussing purposes in the lamp casing a and projects through an elongated hole t in the reflector portion j. The lamp bulb may have its lower portion u frosted, painted, tinted, or otherwise treated to soften or diffuse the emitted light. Specification 213,329 is referred to.
Patent GB-920681-A (GB)
Title: Removal of hydrogen sulphide from gases
IPC: C10K1/20
Filed: 1958-04-01
Abstract: Hydrogen sulphide is extracted from a gaseous mixture (e.g coal gas or coke-oven gas) by contacting the mixture with iron oxide disposed in a plurality of containers through which the mixture is passed in sequence, the order in which the mixture passes through the containers being changed at intervals so that the mixture always enters first into a container wherein the iron oxide has suffered no substantial reduction (preferably not more than 10%) in its ability to combine with and remove the hydrogen sulphide from the mixture. The interval between changes in sequence may be 1/3 -8 hrs., preferably 4 hrs. or less, while the number of containers in the sequence may be 6-12.  The iron oxide is converted by the hydrogen sulphide to ferric sulphide but, if oxygen (e.g. in the form of air) is introduced with the gases entering the first or second container in the sequence, reaction takes place between the ferric sulphide and the oxygen to reproduce ferric oxide and to form elementary sulphur. The iron oxide charge in the containers may contain, in addition to the oxide, sawdust and possibly some sodium carbonate, this mixture being moistened to a predetermined level.  Initially, fresh iron oxide may be employed in the containers, but this may be replaced at intervals with a mixture of fresh and partly spent oxide.  If desired, the direction of flow of gas through the containers may be changed at intervals.  According to a modification of the process, the order of the sequence is changed at intervals so that each container takes the first position in turn and the direction of flow of gas through the containers is reversed at intervals, it being arranged that the intervals between changes in the order of sequence and between reversing the direction of flow of the gas are such that the average water content of the iron oxide in each of the containers in the sequence does not fall substantially below its initial value. Usually the initial water content of the iron oxide is of the order of 35%.  However, it may be desirable for the final water content of the oxide to be of the order of 10% or less, in which case the water content may be allowed to fall gradually over the latter portion of the active life of the oxide. Apparatus for carrying out the process of the invention is described.
Patent GB-568398-A (GB)
Title: Improvements in and relating to hydraulically-controlled variable-pitch screw propellers
IPC: B64C11/38
Filed: 1943-06-28
Abstract: 568,398. Fluid-pressure servomotor control systems. GODDEN, T. E., ELMES, R. T., MORRIS, E. H., EDWARDS, R. A., and HOLBERTON, B. V. June .28, 1943, No. 10467. [Class 135] In addition to the main pump 17 which actuates a piston 10 connected by linkage (not shown) to propeller blades to vary their pitch, a large capacity pump 31 is provided, adapted, when a control valve 36 is operated, to take the place of the main pump to effect rapid movement of the piston in either direction, to reverse the pitch and return it to normal. Normally, the pump 17 supplies pressure fluid to a line 21 or 22 leading to one side or other of the piston 10 when change in speed. causes a centrifugal governor 19 to move a valve 18 in the appropriate direction: The valve 36 is then in the central position shown. To reverse the pitch, the valve 36 is moved to the position 38 thereby cutting off the lines 21, 22 from the cylinder at 43, 44 and cutting in the pump 31 at 46. The pump 31 operates at a high pressure determined by the relief valve 32, and delivers fluid to the right of the piston so that the piston is driven to the left. To restore the pitch to " forward," the valve 36 is moved to position 37, thereby connecting the pump to the left of the piston at 46. A second relief valve 55 is now connected through a passage 52 in a byepass for the pump 31 and as this valve 55 opens at a lower pressure, the pressure available to drive the piston 10 to the right, while still sufficient to effect rapid operation, is insufficient to move the piston beyond the normal operating range. The limit of this range is determined by an extension 60 of the piston, closing at 58 the normal outlet for fluid from the right-hand end of the cylinder. To move the piston farther, for feathering, pressure sufficient to open a valve 56 controlling a byepass must be provided, e.g. by means of a separate "feathering" pump 29. Specifications 517,696 and 543,991, [both in Group XXXIII], are referred to.
Patent GB-623140-A (GB)
Title: Improvements in or relating to vehicle doors
IPC: B60J5/04
Filed: 1947-04-19
Abstract: 623,140. Vehicle doors. PRESSED STEEL CO.,Ltd., and LONGMAN, C. W. April 19,1947, No.10471. [Class 103(ii)] A sheet-metal vehicle door comprises an inner panel 11 formed with a jamb flange 13 secured at 17 to an outer panel 12 with a plate or plates 16 extending partially or wholly over the height of the door and lying in a plane slightly inclined to the plane of the outer panel 12 and secured thereto at 17, and a transverse flanged channel - section reinforcement 19 adjacent each hinge mounting extending between and secured to said plate or plates at 21,. to the inner panel at 20 and to the jamb flange at 22. Additional channelsection members 37 are attached to the interior of reinforcements 19 and lipped at 27 to secure tapped blocks 24 for the hinge attachment screws (not shown).
Patent GB-935516-A (GB)
Title: Exit machine for coating apparatus and method of controlling coating thickness
Inventor: WHITLEY PAUL JOSEPH
IPC: C23C2/38
Filed: 1961-03-22
Abstract: In a method of hot dip-coating a metal (e.g. steel) strand, i.e. strip sheet or wire, the meniscus 14 and 15 formed by the exit rolls 12 and 13 is controlled by gas blasts from pipes 18 and 19 and nozzles 20 and 21 which are spaced across the whole width of the strand, thereby controlling the thickness of the coating which may be of aluminium or zinc.  Air or steam are stated to be suitable gases for aluminium coating but for zinc a blast of air heated by a gas flame, or a gas flame alone are preferably used.
Patent GB-810035-A (GB)
Title: Improvements in flowmeters
IPC: G01F15/075
Filed: 1955-04-12
Abstract: 810,035. Counting-apparatus. HOBSON Ltd., H. M., and FELLOWS, H. March 26, 1956 [April 12, 1955], No. 10535/55. Class 106 (1). [Also in Group XXIX] The volumes of liquid passing two flowmeters each generating electrical pulses at a frequency proportional to the flow rate are added, and the total volume is indicated on an electromechanical counter, the system including a chain of frequency dividers and the pulses from the flowmeters being applied to appropriate points in the divider chain depending on the number of pulses per unit volume they produce. Fig. 3A illustrates the addition of pulses from transmitters producing 64 and 32 pulses per unit volume (the transmitters may be of the type described in Specification 752,496) by passing the pulses from the former through a binary divider 23<SP>1</SP> after amplification and shaping, while those from the latter pass without division to gating network 12. Subsequent division is effected by binary dividers 23<SP>2-6</SP> and the resulting pulses fed to counter 25. The amplifiers 10, 10A and shapers 11, 11A may be of the types described in Specifications 791,655 and 798,507, [both in Group XXXVIII], respectively. Reference has been directed by the Comptroller to Specification 752,496.
Patent GB-105384-A (GB)
IPC: F02C5/02
Abstract: 105,384. Cory, F. G. April 8, 1916. Jet - wheels; casings; cooling p a r t s working- fluid supply.-Relates to an internalcombustion turbine wherein the combustion chambers r e formed 'b y pockets n in the rotor m registering with chambers d in the casing a. Fuel or gas mixture is supplied through casing ports g, Fig. 3, to the pockets n as they pass, and the charge is ignited when the pockets n register with the chambers d, the pockets n exhausting through casing ports h, while the chambers d discharge partly through rotor ports o in advance of the partitions u and are then scavenged by a supply of cooling-air pumped by fan blades s through the rotor ports o in the rear of the partitions u. The blades s are secured to the rotor arms; or the arms themselves may be shaped as fan blades. Cooling is further facilitated by the provision of holes q in the sides of the rotor rim and similar holes in the casing. The gas mixture may be pumped through a reservoir; each pair of chambars d may be supplied through a separate reservoir, so that for slow running, one pair of chambers may be supplied with cooling-air only, while the other pair may act as combustion chambers. The casing a may be enclosed to exclude dust, and air may be drawn in from above or elsewhere. A pawl and ratchet-wheel or a clutch device may be provided to prevent the rotor from revolving in the wrong direction. In a modification, Fig. 7, the rotor pockets n have stepped surfaces t, t', t<2>, there are three pockets n to four chambers d, the fluid inlets g are arranged peripherally, the fan blades s, s', s<2> are arranged as shown, and the casing is provided with spring-pressed segmental plates 20. The fuel may be supplied by a number of screw pumps 25, Fig. 10, and fan blades 21, 24 secured to the rotor shaft co-operate with fixed guide-blades 22 and a shield 23 on the casing to provide additional cooling-currents of air. The blades 21 may be the propeller blades of an aeroplane.
Patent GB-768217-A (GB)
Title: Well casing centralizer and wall scratcher
IPC: E21B37/02
Filed: 1955-04-12
Abstract: 768,217. Centralizer and scratcher for well casing. BAKER OIL TOOLS, Inc. April 12, 1955 [April 26, 1954], No. 10541/55. Class 85. A centralizer has at least one supporting collar 30 having an annular raised channel 15 and outwardly bowed springs 12 the ends of which extend through openings into the channel 15 and are secured in position by plug welds 25 through holes 24 in the channel 15. The example described has two similar supporting collars 30 of sheet metal each of which has flanges 13, 14 and may be in two parts held together by pins 32 passing through hinge knuckles 31. In a modification, Fig. 5, a well scratcher is formed on the upper collar 30, ends 48 of U-shaped wires extending through upwardly directed holes in a ridge 44.
Patent GB-800559-A (GB)
Title: Device for recording variations in the diameter of substantially cylindrical objects of considerable length
IPC: G01B11/08
Filed: 1956-04-06
Abstract: 800,559. Photo-electric recording of variations in diameter of cylindrical objects. COMPAGNIE GENERALE D'ELECTRICITE. April 6, 1956 [April 28, 1955], No. 10631/56. Class 40 (3). A device (see Fig. 3) for recording variations in the diameter of a substantially cylindrical object 1 comprises a measuring head, turnable about the longitudinal axis of the object and including a lamp 10 illuminating a photo-cell 13 through a window and a second photo-cell 16 directly via a mirror 32, and recording means energized by the photo-cell currents, whereby with the object stationary and the measuring head turned a curve of ellipticity in a common cross-section can be recorded, with the object moved lengthwise and the measuring head stationary a curve of variation of mean diameter in a common diametral plane can be recorded, and with both measuring head and object moving simultaneously a curve of ellipticity superimposed on a curve of variation of mean diameter can be recorded. An electric circuit arrangement (see Fig. 4) is a bridge 17 formed by four valves 18, 19, 20, 21, and photo-cells 13, 16 are connected in opposite arms; one diagonal is fed by D.C. source 22 and the other contains recording instrument 25 which may include an amplifier. In a modified circuit arrangement (see Fig. 5, not shown) a long-time-conatant network is connected via reversing switches between circuit 17 above and recording instrument 25 above; when tracing the curve of mean diameter only, the network is connected whilst it is switched out of circuit when ellipticity is traced in addition. In a further modified circuit arrangement (see Fig. 6), simultaneous and separate recording of mean diameter on a recording instrument 25 via a long-time-constant circuit 26 similar to that above, and of ellipticity on a second recorder 30 (which may be an oscilloscope) via a shunt circuit 29 with a timeconstant less than that corresponding to the rotation period of the measuring head, is possible, the bridge circuit 17 being at the input.
Patent GB-527258-A (GB)
Title: Improvements in or relating to engine control devices
IPC: B63H21/22
Filed: 1939-04-05
Abstract: 527,258. Fluid-pressure servomotor-control systems. DAVEY, PAXMAN & CO. (COLCHESTER), Ltd., and PAXMAN, E. P. April 5, 1939, No. 10633. [Class 135] An engine control device comprising a servomotor mechanism which reacts to speed variations and is also under hand control has a spindle forming part of the said servomotor system provided with resilient means for cushioning sudden movements applied to the hand control means, said spindle being also connected to fluid cushioning means arranged to absorb sudden movements applied to the said servomotor mechanism. The hand controlled spindle 3 carries a sleeve 5 adjustably secured to the spindle bv a screwthread and lock-nut 6. A spring 8 is housed between a flanged abutment carried by this sleeve and an abutment 9 slidably mounted thereon. A forked arm 11 operated by hand controlled means situated for example on the bridge of a motor propelled vessel engages an element 9 and is held in position by a flange or the lower end of the sleeve 5. A collar 12 secured to the spindle 3 is connected by a lever 14 with the spindle 16 of a dashpot supported on a bracket 25. The dashpot piston is provided with a non-return valve 23 and a bye-pass 24 controlled by an adjustable throttle 20 is provided so that movement is retarded in one direction. Specification 516,804 is referred to.
Patent GB-798122-A (GB)
Title: Improvements in and relating to mercury arc rectifiers
Inventor: HANDLEY GEOFFREY WILLIAM
IPC: H01J13/32
Filed: 1955-04-13
Abstract: 798,122. Rectifying. BRITISH THOMSONHOUSTON CO., Ltd. April 13, 1956 [April 13, 1955],. No. 10656/55. Class 38 (2). [Also in Group XL (a)] A mercury arc rectifier is cooled by a fan 2 energized from 3-phase supply 8, 9, 10 through the main windings 3 of a saturable reactor. Control winding 5 of the saturable reactor carries a current proportional to the load current so that the cooling varies with the load, and windings 3 of the saturable reactor can be shortcircuited by contactor 7 whose control winding 8 is energized by a device sensitive to the rectifier temperature. The latter control prevents overheating during periods between peak loads when a high mean current may be present.
Patent GB-1103344-A (GB)
Title: Expansible link bracket
IPC: A44C5/08
Filed: 1965-03-12
Abstract: 1,103,344. Bracelets. C. CHOW and M. FAN. 15 Nov., 1965 [12 March, 1965], No. 10681/65. Heading A3H. An expansible bracelet comprises a series of links, each comprising a cover portion 3 and a back 5, connected by elements 2 which each have a tongue 14 which engages one end 13 of each of two torsion springs 11 mounted on columns 9 on a plate 4 in each link. The other end of each spring engages under a lug 12 on the plate.
Patent GB-1458665-A (GB)
Title: Photographic apparatus
IPC: G03B17/52
Filed: 1973-03-06
Abstract: 1458665 Coin-operated self-processing camera R T CLARK 6 March 1974 [6 March 1973] 10748/73 Heading G2A A self-developing film unit comprising a photosensitive sheet, transfer sheet and leader tab is withdrawn from a camera 1 through developerspreading pressure rollers attached to the camera back 3 by grippers 20 and 22 which grip the leader tab and sensitive sheet respectively, gripper 20 being directly driven by a motor 52 and having a lost motion connection comprising a cross-bar 42 and slot 48 with gripper 22 which is movable in an arcuate path about an axis 28. Gripper 20 moves first, in a horizontal direction by means of a roller 34 and guide 36 until the sensitive and transfer sheets are brought into register whereafter grippers 20 and 22 move together until the leading edge of the sensitive sheet, but not that of the transfer sheet, passes under a guide rod 60. Motor 52 is then stopped and a motor 70 operated to enclose the film unit between development plates 72 and 74 (which move from the position of Fig. 1 to that of Fig. 2) except for the leading edge of the sensitive sheet which protrudes from between guide rod 60 and a further guide rod 62 attached to a plate 72. When development is complete, motor 52 is  operated again whereby the transfer sheet is stripped off and passes through the nip of rollers 80 and 82 to a delivery shoot 84 and the sensitive sheet continues its arcuate path, being first supported by a strut 46 and finally released, together with the leader tab, to fall into a bin. Rod 60 is also withdrawn to free any part of the film unit entangled therewith. An exhausted cassette is replaced after a motor 6 raises camera back 3.
Patent GB-326680-A (GB)
Title: Improvements relating to spirally guided gas-holders
IPC: F17B1/00
Filed: 1929-04-08
Abstract: 326,680. Blakeley, W., and Firth, Blakeley, Sons, & Co., Ltd. April 8, 1929. Holders. - A roller carriage for a spirally guided gas-holder of the type in which the roller axle is capable of endwise movement, is provided with ball or roller bearings for controlling the endwise movement of the axle, and in addition with intergearing rollers to prevent sliding, and special lubricating means. In one form the roller axle b carrying the intergearing rollers B and mounted in the roller carriage A is provided with an annular recess b<1> engaging a ring of balls E carried in an outer ball race formed from two rings e, e<1> clamped in position by a cap a and screw a<1>. The axle is formed with a longitudinal oil passage b<2> communicating with some intermediate portion of the bearing and terminating at its rear end in a tube b<3> which dips into an oil well a<2> at each revolution. In one modification (Fig. 8) the ring of balls is interposed between two rings e<2>, e<3> held in position between collars b4 and b<5> on the shaft b. Other modifications are also described.
Patent GB-300218-A (GB)
Title: Improvements in or relating to aerial warfare
IPC: B64D1/04
Filed: 1925-04-27
Abstract: 300,218. Fletcher, A. S. April 27, 1925. Bomb - dropping.- Several bomb - releasing levers 8 are selectively operated by a single control lever 15. The releasing levers 8 shown are bell cranks mounted side by side on a spindle 10; and the control lever 15 has two legs 13 pivoted about the same spindle 10 over bushings 11, and a bridge-piece 14 extending over the upper arms of the bell cranks 8, Slides 17 are fitted in the bridgepiece 14, one above each bell crank, and these slides are provided with operating knobs 19 and ball catches 21 for retaining the slides in the extreme positions. Normally, the control lever 15 is held against a stop 23 by a spring 24, and the upper arms of the bell cranks 8 are held against a stop 6 by springs or by the tension of Bowden wires connecting the bombreleasing gears to shackles 22 on the horizontal arms of the bell cranks 8. The slides corresponding to the bell cranks it is desired to operate are first, depressed, then the control lever is pulled from the stop 23 to the stop 25. The selected bell cranks engaged by the slides 17 follow this movement, and release their corresponding bombs, and are finally caught by slidable or pivoted spring pawls 26.
Patent GB-348820-A (GB)
Title: Improvements in cylinder heads for internal combustion engines
IPC: F02B3/06
Filed: 1930-04-07
Abstract: 348,820. Cylinders. SWISS LOCOMOTIVE & MACHINE WORKS, and BœCHI, A., 30, Salstrasse, both in Winterthur, Switzerland. April 7, 1930, No. 10985. [Class 7 (ii).] The inner end 2 of a cylinder head is (a) strengthened by a ring 8 of ductile material, which is shrunk on, and, (b) connected by flexible ribs 7 to the outer edge 1; the longest dimensions of cross sections of the ribs are arranged circumferentially to the head. An annular space 4 permits expansion to take place.
Patent GB-829611-A (GB)
Title: Preparation of isoprene
IPC: C07C5/27
Filed: 1958-04-08
Abstract: Isoprene is prepared from acyclic hydrocarbons of five carbon atoms by firstly dehydrogenating to give a mixture containing C5 monoand di-olefines, separating this mixture into a first stream containing C4 and lower hydrocarbons and hydrogen, a second stream containing only C5 mono-olefines, separating the second stream into isoprene which is recovered and other diolefines (mostly piperylene), hydrogenating these other diolefines to mono-olefines and isomerizing the product to branched chain mono-olefines and recycling this material to the dehydrogenation step, the third stream from the first separation step also being recycled either direct to the dehydrogenation step or, if desired, by way of the isomerization step.  The feed stock may contain isopentanes and n-pentane.  The dehydrogenation is effected over a chromia-alumina catalyst, e.g. containing 20% chromia, at 1000-1100 DEG  F., 1-7 inches of mercury and a space velocity of 0.7-2 vol./vol./hr.  The hydrogenation of the monoolefines is effected over a catalyst comprising nickel, copper, nickel sulphide, tungsten sulphide, molybdenum sulphide or nickel tungsten sulphide, which may be supported on alumina, at 375-475 DEG F., 20-100 p.s.i.g. and a hydrogen-piperylene molar ratio between 1 and 5 : 1.  The hydrogen may be obtained from an extraneous source or from the dehydrogenation effluent.  The isomerization is effected over a catalyst such as activated alumina, HF-activated alumina or a silica-alumina cracking catalyst at 400-800 DEG  F., atmospheric pressure and a space velocity of up to 4 vol./vol./hr.