baber/WOPTO huggingface dataset:
Patent GB-435005-A (GB)
Title: Process of making zinc oxide
IPC: C22B19/34
Filed: 1934-11-24
Abstract: <PICT:0435005/III/1> Zinc oxide of a acicular form is obtained by vaporizing zinc in a reducing atmosphere at approximately 1200 DEG C., and passing the zinc vapours into an oxidizing zone wherein the air supply is regulated to promote the growth of the oxide particles, as by slowly mixing the vapours with air to burn them with a lazy flame whilst maintaining a temperature of substantially 1100 DEG  C. Zinc ore may be reduced and zinc be volatilized in a reducing atmosphere in a furnace 1, the mixed zinc vapour and reducing gas be passed to a chamber 6 maintained at a constant temperature in which they are momentarily arrested, and combustion be effected in a chamber 10 by means of air admitted through ports 15, 16. The zinc oxide particles at approximately 1100 DEG  C. are withdrawn through a trail 11 to a bag room 13 by a fan 12.  Air may be admitted through ports 17 into chamber 6 in sufficient quantity to oxidize impurities without oxidizing the zinc vapours to any appreciable extent. Specification 379,855 is referred to.
Patent GB-212627-A (GB)
Title: Improvements in and relating to electrical transmissions for direction purposes
IPC: G09F9/00
Filed: 1922-12-12
Abstract: 212,627. Evershed & Vignoles, Ltd., and Needham, J. C. Dec. 12, 1922. Order apparatus. - Indicators employed in the transmission of orders or directions by the Wheatstone bridge method, and in which separate coarse and fine adjustments is provided for, as described in Specification 191,849, are provided with means for eliminating all visual indication by the fine adjustment indicator until the coarse adjustment indicator has been brought to or near its registering point. The coarse adjustment indicator is shown in Figs. 1 and 4 as a flag a<4> rocking on a spindle a at the opposite end of which it carries a screen a<3> with central vertical slot a<5>. The flag a<4> has an opening a<6> which is illuminated by light from a lamp c. The fine adjustment indicator comprises a flag b<3> rocking on a spindle band provided with an opening b<4> illuminated by light from the lamp c, which passes through a circular slot a<7> in the flag a'. The screen a<3> cuts off the light from the opening b<4> unless and until the screen a<3> and its flag a<4> are brought to central position, the radial slot a<5> then permitting light to pass to the opening b' and give an indication for fine adjustment. The coils operating the indicators are so wound, as described in Specification 191,849, that the deflection of the fine adjustment indicator, when it first becomes visible, is in the same direction as that of the coarse adjustment indicator. As alternative constructions, the fine adjustment pointer may be provided with a knock-off device which is actuated directly or through a relay by the out of balance current of the coarse adjustment system, or by a relay operated by a contact closed by the coarse adjustment pointer.
Patent GB-376174-A (GB)
Title: Method for the production of solid di-ammonium phosphate from impure phosphoric acid
IPC: C01B25/40
Filed: 1931-12-08
Abstract: In obtaining solid diammonium phosphate by neutralizing phosphoric acid with ammonia in two steps, neutralization to the mono-stage or a little higher, for example, to a pH value of about 5, is so effected that the heat of the reaction is utilized for partial evaporation of the water, a temperature of over 100 DEG  C. being obtained. Impurities precipitated, chiefly as phosphates, are removed by filtration or centrifuging, and the monoammonium phosphate solution is further neutralized in a closed vessel, while being stirred and cooled say to 70-80 DEG  C.  When a pH value of 8 is reached, corresponding to completion of the reaction to the diammonium stage, the solution is sprayed into a current of warm air, with which may be admixed a small quantity of ammonia. The temperature should not rise above 70 DEG  C.  The dried salt should be quickly cooled to room temperature.  The ammonia should be recovered from the drying air by absorption in acid, for example, the phosphoric acid to be converted.
Patent GB-304630-A (GB)
Title: Improvements relating to the manufacture of splinterless glass sheets
IPC: B32B17/10
Filed: 1927-10-21
Abstract: 304,630. Riley, G. B. Oct. 21, 1297. Divided on 310,065. Scrapers. - A tool for cleaning out the grooves in the edges of compound sheets of glass and celluloid &c., before applying sealing material therein consists of a bar 1 adapted to slide along the edges of the glass sheets and a cutter 3 secured in a slot in the bar by a screw 4 and clamping plate 5. Specification 237,179, [Class 20 (iii), Doors &c.], is referred to.
Patent GB-342165-A (GB)
Abstract: 342,165. Stove dampers. HESKETH, F., Central Foundry, Nile Street, Rochdale. Feb. 19, 1930, No. 5485. [Class 126.] A flue damper which falls under the action of gravity to close the flue, and which moves substantially vertically in its own plane, is adapted to be opened and locked in the open position by an uninterrupted movement in one direction, and to be unlocked and fall to the open position by a reverse uninterrupted movement. In the form shown, the damper plate a is provided with an intregal extension b forming a handle and passing through a vertical slot c<3> in a bracket c attached to the grate front. A pair of flanges c<2> on the bracket c carry a pivot-pin e passing through a slot a<1> in the damper, which is retained in the raised position shown by the engagement of a hooklike part b<1> on the part b in a recess f<1> formed in a boss f at the lower end of the slot c<3>. Upward movement of the handle slightly raises the damper bodily, owing to the provision of the slot a<1>, until the hook b<1> is disengaged from the boss f, the damper then falling to the closed position under gravity. To open the damper, the handle is depressed, the damper turning about the pin e until the hook b<1> engages the front of the boss f ; further downward pressure causes the damper to rise bodily owing to the cam-like formation of the engaging surfaces of the parts b<1>, f and the provision of the slot a, until the hook b<1> rides over the nose of the boss f and engages in the recess f<1>.
Patent GB-947027-A (GB)
Title: Parenteral equipment
IPC: A61M5/142
Filed: 1962-09-07
Abstract: 947,027. Administering parenteral fluids. BAXTER LABORATORIES Inc. Sept. 7, 1962 [Sept. 25, 1961], No. 34276/62. Heading A5R. [Also in Division F1] A blood administration set comprises a flow indicator 1, 2, a filter 13 and a pump comprising a resilient tubular chamber 15 having a non- return inlet valve which includes a plate 19 with an aperture 19a communicating with an inlet tube 14 and a flexible perforated diaphragm 20 sealed peripherally to the plate, the central part of the diaphragm being imperforate and located so that pressure on its underside forces it over the aperture 19a in the plate to close the valve. The pump inlet 14 is connected to a drip and filter chamber 10 having a filter 13 of nylon mesh or stainless steel and a pointed connector 11 for communication with the blood. The pump outlet is connected by flexible tubing 17 to a needle 18 through which blood is supplied to the patient by alternately squeezing and releasing the pump chamber 15.
Patent GB-969571-A (GB)
Title: Improvements in couplings for flexible drives
Inventor: PASQUA ANTHONY GORDON
IPC: F16C1/26
Filed: 1962-09-07
Abstract: 969,571. Flexible shafts. FLEXIBLE DRIVE & TOOL CO. Ltd. Sept. 6, 1963 [Sept. 7, 1962], No. 34347/62. Heading F2U. A coupling for a flexible drive shaft having a flexible core 12 within a sheath 10 comprises a hollow casing 14 with an axially elongated element 42 for attachment to the end of the core and a sleeve 52 attached to the end of the sheath and capable of limited axial movement in relation to the casing 14 to accommodate curvature of the shaft. The casing consists of two portions 16, 18 connected by a threaded portion 26, the end of portion 16 having an internal thread 50 providing a screw connection for the end of the shaft. A bearing 34 is secured between members 16, 18 and carries the elongated element of which the end 42 is secured to the end of the core 12, while the other end 44 is engageable with the driving or driven member. The sleeve 52 is retained in the end of casing 14 by a circlip 62 and is formed with a portion 58 of reduced diameter to permit the desired axial movement of the end of the sheath 10.
Patent GB-921224-A (GB)
Title: Improvements in and relating to co-ordinate switching systems
Inventor: SMITH SYDNEY FRANCIS
IPC: H01H67/24
Filed: 1959-10-09
Abstract: 921,224. Electromagnetic relays. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 14, 1960 [Oct. 9, 1959], No. 34353/59. Class 38 (5). [Also in Group XXXIX] A relay has two windings L1 and L2, both of which require energizing before contacts 16, 17 are operated. The pivoted armature 5 of winding L1 controls a rod 11 mounted in a slide block 8 while armature 6 of winding L2 controls a similar rod 12. A contact operating stud 15 is carried on a cross-arm 10 pivoted to the ends of the rods 11 and 12. Fig. 2 shows the relay with neither winding energized. Fig. 3 shows winding L2 energized and winding L1 unenergized in which condition the movement of stud 15 is insufficient to deflect spring 16 into contact with spring 17. With both windings energized, as shown in Fig. 4, spring 16 makes contact. Specification 921,225 is referred to.
Patent GB-1005076-A (GB)
Title: Lock stitch sewing machines
IPC: D05B55/14
Filed: 1964-08-21
Abstract: 1,005,076. Sewing machines. SINGER CO. Aug. 21, 1964 [Aug.30, 1964], No. 34410/64. Heading D1G. A sewing machine comprises work-feeding means, a needle bar gate shiftable in the workfeeding direction, a shaft driven from the main shaft at a lesser speed than the latter shaft, a variable eccentric on the former shaft, and a linkage between said eccentric and the needle bar gate, the arrangement being such the needle-jogging movement in the feed direction is greater than the movement imparted by the work-feeding means during the formation of each stitch. A needle bar 23, carrying a needle 27, reciprocates in a gate 24 pivoted at about 25 about an axis perpendicular to the direction of work feed imparted by dogs 50. The feed advance shaft 54 is driven by a pitman 60 from a variable eccentric 61 on the arm shaft 18. Adjustment of eccentric 61 is effected by engaging a spring-biased plunger 62 with a notched flange 63 and turning the hand wheel 64. A plate 80, closing an opening 82 in the machine arm 16, carries a pair of bearings 83 journalling a shaft 85 coupled by gearing 86, 87 to the arm shaft 18 for rotation at half the speed of the latter. A variable eccentric 88 on shaft 85 is adjustable by engaging a spring-biased plunger 90, carried by a cover plate 92, with a notched flange 89 and turning the hand wheel 64. Eccentric 88 is connected by a pitman 94 to a crank arm 96 on a lock shaft 33, and a crank arm 31 on the latter is slidably connected to a pin 28 first with the gate 24. The arrangement is such that the needle is jogged prior to one stitch in the direction of work feed and prior to the next stitch in the opposite direction, the needle jogging amplitude being approximately one and a half times the feed provided by the dogs 50, whereby needle penetrations are made at A, B, C and D in succession to effect backward stitches AB and CD, the lengths of which are the difference between the needle jogging movement and the feed dog movement, and a forward stitch BC the length of which is the sum of the needle jogging and feed dog movements. It is stated that the seam is extensible and is therefore suitable for uniting knitted fabrics. The stitches are formed over a finger 100, carried by the presser foot 66, to prevent the needle from penetrating the thread of a previously formed stitch. Specification 435, 360 is referred to.
Patent GB-1182304-A (GB)
Title: Improvements relating to Photographic Processing Apparatus.
IPC: G03B17/52
Filed: 1967-07-27
Abstract: 1,182,304. Photographic processing apparatus. INTERNATIONAL POLAROID CORP. July 27, 1967 [July 28, 1966; Nov. 2, 1966], No.34544/67. Heading G2A. Apparatus for applying a predetermined quantity of non-viscous liquid reagent substantially uniformly to each of a succession of areas of photographic sheet material comprises a liquid reservoir; an applicator member including a capillary channel presenting an elongate opening at the surface of the applicator member and leading inwards from the surface to a multiplicity of capillaries which communicate with the reservoir; and means for effecting the movement of a photographic sheet across the mouth of the channel transversely of the length thereof to transfer liquid from the channel to the sheet. The apparatus may be used in a self processing camera, a printer, or, as described, in a document copying apparatus similar to that of Specification 1, 182, 303. As shown Fig. 9, the applicator 154 is formed from two portions 156 and 174 held together by a screw, the lower portion including the reservoir 172 connected to the atmosphere by an opening 188 in the upper portion, and the upper portion being cut away so as to form the capillary channel 162 in conjunction with the lower portion. Liquid is conducted from the reservoir to the channel 162 by a wick 166 forming the multiplicity of capillaries, and a roller 170 conveys a photographic sheet across the mouth of the channel. When the apparatus is not in use, a torsion bar 176 is urged by spring 180 to flex edge 204 of the portion 174 into engagement with edge 206 of portion 156 so as to close the channel. A solenoid is operated to counteract the spring action when the apparatus is in use. In another embodiment, Figs. 2, 3 (not shown), the applicator is formed in one portion, the capillary channel (62) extends only as far as the wick (66) and the channel mouth is closed by deformation of the roller (70). In further embodiments, the multiplicity of capillaries is formed by grooves in the walls of adjacent parts within the applicator, Figs. 4-6 (not shown), or by a corrugated membrane, Figs. 7, 8 (not shown).
Patent GB-991998-A (GB)
Title: Toy cash registers
IPC: A63H33/30
Filed: 1963-09-03
Abstract: 991,998. Toy cash registers. R. BRANDSTATTER, H. BRANDSTATTER, and H. BAUER, [trading as G. BRANDSTATTER]. Sept. 3, 1963 [Sept. 6, 1962], No. 34763/63. Heading A6S. In a toy cash register indicator, slides 7 are lifted to an indicating position 7<SP>1</SP> by individual lifting levers 22 each of which are retained in the lifting position 22<SP>1</SP> by a tooth 36 on a movable comb 32 pivoted at 33. An individual lever 22 is pressed to position 22<SP>1</SP> by one of a number of spring-loaded indication buttons 4 so that end 21 latches by toggle action in a notch 38 in one of the teeth 36 of the comb 32 which is drawn upwardly by a spring 34. The lever 22 is released from the lifted position by operation of a button 41 which moves comb 32 about pivot 33 a small amount sufficient to release the end 21 of said lever 22. Operation of an adjacent button 44 moves a lever 49 about pivot 46 to allow the cash drawer to open under the influence of a spring 51. A hook 54 on the drawer at the same time moves a resilient member 55 which springs back to strike a bell 56. A member 59 fitted to the back of the drawer also feeds a length of paper from a roll 66 through an opening 67 in the casing.
Patent GB-1278132-A (GB)
Title: Incinerator
Inventor: HENRIKSEN NOROLF
IPC: F23G5/00
Filed: 1970-07-17
Abstract: 1278132 Incinerators NORSK HYDRO VERKSTEDER AS 17 July 1970 34795/70 Heading F4B A refuse or garbage incinerator, includes a furnace chamber 2 into which combustible material from a charging bin 52 is fed on a belt or chain grate conveyer 14, to be combusted with primary air from hydraulically raisable air blowers 22, and secondary air from fixed nozzles 55, the combustion gases exhausting through chimney 44. Each air blower 22 comprises (Fig. 2, not shown) a hollow welded pipe framework connected by a flexible hose to a compressed air supply main system including a fan and a flow regulating valve controlled in dependance upon the exhaust gas temperature in the chimney. The welded pipe framework comprises a horizontal multi-apertured lower beam which rests on top of or partly within the burning material on the grate conveyer 14, the air jets from the apertures both agitating and supplying air to the material, vertical air supplying conduits 28, 30 extending through openings 20 in the furnace chamber roof 12, and an upper air supply manifold. In operation, a charge supplied from a truck or hopper (not shown) to bin 52 is advanced on grate conveyer 14 into zone B of chamber 2 and partially burnt with air from lowered blowers I and II and if necessary oil from burner 62 or fuel gas or oil supplied to at least some of the air blowers, whilst a fresh charge is supplied to bin 52. The blowers I and II are then raised and grate conveyer 14 restarted to advance the fresh charge into zone B and the partially burnt charge to zone C. All blowers I, II, III and V are then lowered to combust material in zones B and C, whilst bin 52 is again refilled. The blowers 22 are once more raised and conveyer 14 restarted to discharge burnt out material from zone C to chute 18 and advance all other material one further step for the combustion process to continue. Movement of the grate conveyer 14 whilst the blowers 22 are lowered may be used to help break up the burning material. In modifications (not shown) the material may be burnt in one, three or four combustion stages instead of two, whilst the feed from bin 52 may be effected by a bulldozing truck or a separate conveyer in the bin, the furnace grate conveyer 14 in these cases being wholly contained within furnace chamber 2.
Patent GB-1153882-A (GB)
Title: Airspeed Indicator
Inventor: DAVEY RONALD FARRANCE
IPC: G01P5/16
Filed: 1965-08-16
Abstract: 1,153,882. Pressure gauges; indicating apparatus; revolution direction indicators. KOLLSMAN INSTRUMENT Ltd. June 2, 1966 [Aug.16, 1965], No.34935/65. Headings G1J, G1K and G1L. An airspeed indicator capable of indicating instantaneous and predicted airspeed, comprises a pointer 13 connected to a first shaft, 16 the position of which depends on differential pressure applied to a capsule, to indicate instantaneous speed, and a second pointer 14 the fulcrum of which is fixed to, and rotates in orbital fashion around, the axis of a second shaft 15 which is rotated by the first shaft 16 after a time delay provided by a linkage comprising torsion spring 17 and eddy current damper 18. The end of pointer 14 is coupled to the end of pointer 13 by a pin and slot arrangement which results in pointer 14 showing a temporary increased movement for any movement of pointer 13 until after the time delay, when the pointers again coincide.
Patent GB-1345937-A (GB)
Title: Thermoplastic siloxane-containing block copolymer
IPC: C08G77/442
Filed: 1971-06-27
Abstract: 1345937 Polystyrene polysiloxane block copolymers DOW CORNING CORP 27 July 1971 [25 Aug 1970] 35117/71 Headings C3T and C3P A thermoplastic material comprises a block copolymer of the formula A{[OSiR 2 ] x  [CR<SP>1</SP> (C 6 H 5 )CH 2 ] y  R<SP>11</SP> g  [CH 2 CR<SP>1</SP>(C 6 H 5 )] w  [R 2 SiO] z-1  R 2 Si[OSiR<SP>11</SP> 2 ] m } n  [OSiR 2 ] x  [CR<SP>1</SP>(C 6 H 5 )CH 2 ] y  R<SP>11</SP> g  [CH 2 CR<SP>1</SP>(C 6 H 5 )] w  [R 2 SiO] z A wherein each R is a methyl, ethyl, phenyl or vinyl radical, each R<SP>1</SP> is H or CH 3 , each R<SP>11</SP> is a divalent C 2 -C 30  hydrocarbon radical, each R<SP>111</SP> is a methyl, ethyl, propyl, butyl, phenyl, or trifluoropropyl radical, each A is H or R 3 Si-, m is 0 or 1, g is 0 or 1, n is geater than 1, w and y are such that the molecular weight of the block (CR<SP>1</SP>[C 6 H 5 )CH 2 ] y  R<SP>11</SP> g  [CH 2 CR<SP>1</SP>(C 6 H 5 )] w  exceeds 7000, and x and z are such that the copolymer contains 40-60% by weight of siloxane units R 2 SiO, there being present less that 5 wt. per cent of free polysiloxane and less than 10 wt. per cent of free polystyrene. It may be prepared by polymerizing styrene and/or alpha-methylstyrene in an organic solvent with a dilithium compound R<SP>11</SP>Li 2 ; to the dilithium polymer product is added in solution a hexaorganocyclotrisiloxane [R 2 SiO] 3  in appropriate amount; the lithium-terminated ABA-type polymer product may be condensed directly, or after treatment with acid, or may be coupled by reaction with a dichlorosilane R<SP>111</SP> 2  SiCl 2 , any residual terminal Li being removed by reaction with acid or a silane R 3 SiCl. Polymers wherein g=0 are derived from styrene and/or methylstyrene polymerized by an electron transfer method. In the examples styrene is polymerized on to dilithium stilbene, hexamethyloyclotrisiloxane is polymerized on to the polystyrene, and the lithium terminated product is treated with acetic acid, neutralized and further polymerized i.p.o. stannous octoate (Example 1), or is condensed with trifluoropropyl methyl dichlorsilane (Examples 2 and 3). Uses.-Forming films or coatings from the molten state or from solution.
Patent GB-623216-A (GB)
Title: Improvements in or relating to dynamometers
IPC: G01L3/14
Filed: 1946-11-27
Abstract: 623,216. Rotary-transmission dynamometers. BRISTOL AEROPLANE CO., Ltd., OWNER, F. M., and MARCHANT, C. I. Nov. 27, 1946, No. 35238. [Class 106 (ii)] A dynamometer comprises an idler gear for transmitting the power to be indicated, means to support the idler for rotation, means for carrying this support for movement about an axis eccentric with the axis of rotation of the gear, and a torque indicator actuated by said support-carrying means due to the resultant of the tooth pressures on the idler. The invention is described as applied to a power plant in an aircraft in which a pair of gas turbine engines lie side-by-side, each transmitting to an output shaft 10 disposed between them, the shaft 10 being the input shaft of a reduction gearing which drives two counter-rotating airscrews. A pinion 17 on each turbine shaft 12 drives a gear 18 fast on the shaft 10 through an idler gear 19. Each idler gear is supported by a roller bearing upon a sleeve 21 having an eccentric bore to receive a pin 22 carried by a housing 9 (not shown). Each sleeve 21 has a radiallyextending arm 23, the free end of which is connected with a piston 25 by a rod 24. The piston 25 is in a cylinder 26 through which there circulates lubricating oil under pressure from a pump 27 driven by one or both turbines. A pressure gauge 30 in the pilot's cockpit is connected to pipe line from the pump 27 and is graduated to register torque units. The resultant force F produced by loads f<SP>1</SP> and ff<SP>2</SP>  on the teeth of the idler gear 19 passes through the centre of the idler, and produces a moment about the centre of the pin 22 which tends to rotate the sleeve 21 upon the pin. This movement is transmitted to the arm 23 and hence to the oil in the cylinder 26, so that the variations in pressure in the oil indicate the torque transmitted through the idler gear 19. The oil in the cylinder 26 leaks past the piston 25 to within the housing 9 and is returned to the pump 27 to ensure any air entrapped in the oil is carried away and to reduce the tendency for the oil to freeze at high altitudes. The oilfilled cylinders 26 also act as hydraulic dampers for the transmission.