baber/WOPTO huggingface dataset:
Patent GB-1224843-A (GB)
Title: Process for the production of polyesters
IPC: C08G63/42
Filed: 1969-04-28
Abstract: 1,224,843. Aromatic polyesters. TOYO BOSEKI K.K. 28 April, 1969 [30 April, 1968], No. 21630/69. Heading C3R. [Also in Division C2] A high molecular weight polyester is produced by reacting a benzene dicarboxylic acid with ethylene oxide in the presence of an inert organic solvent and of a catalyst which is an amine or a salt of an amine with a carboxylic acid, until 55 to 90% of all the carboxylic acid groups have been esterified, removing solvent and reducing the unreacted ethylene oxide content, the temperature not exceeding 180‹ C. during these stages, and then polycondensing the resulting product at a temperature above 180‹ C. The amount of unreacted ethylene oxide should be reduced to satisfy the equation in which EO is the mol number of unreacted ethylene oxide per mol. of esterification product and ES (per cent) is the degree of esterification of the acid. 20-200% by weight of the inert organic solvent, based upon the weight of the acid, may be employed. Preferably the esterification product is heated to above 120‹ C. in order to effect removal of solvent and ethylene oxide.
Patent GB-711037-A (GB)
Title: Improvements relating to the manufacture of viscose
IPC: D01F2/08
Filed: 1950-09-01
Abstract: In a process for making viscose by converting a high alpha-cellulose content cellulose into alkali cellulose by mixing it intimately with an a queous solution of caustic soda and thereafter sulphidizing the alkali cellulose with carbon bisulphide, the usual operations of steeping and pressing being omitted, the composition of the moist mass of alkali cellulose crumbs is adjusted to 13-15 (preferably 14) per cent. cellulose and 13-15 (preferably 14) per cent. NaOH, and the sulphidizing treatment is carried out in two or more stages.  The treatment with caustic soda solution and the initial grinding are preferably effected with an aqueous solution containing 18-22 per cent. of caustic soda, and the dilution to 13-15 per cent. concentration is effected on further kneading in a disintegrator. The alkali cellulose may then immediately be treated with four-fifths of the approximately 35 per cent. of carbon bisulphide (calculated on the cellulose) used for sulphidizing, and, after dilution with water to a mixture containing 12 per cent. cellulose (free and combined) and 12 per cent.  NaOH (free and combined as alkali cellulose), it is treated with the remaining proportion of carbon bisulphide. The above percentages of cellulose and NaOH are calculated on the cellulose, NaOH and water components of the mixture only, the carbon bisulphide (both free and combined as xanthogenate) being disregarded.  A portion of the carbon bisulphide may be mixed with the cellulose before the addition of the caustic soda solution. In an example 20 kg. of air-dried cotton cellulose and 76 kg. of 22 per cent. aqueous caustic soda solution are kneaded together for 2 hours, 14.2 kg. of 19.5 per cent. aqueous caustic soda solution, 23 kg. of water and 200 grams of a wetting agent such as "Monopol-Brilliant-O1" (a sulphonated castor oil) are added and kneading is continued for a further hour, whereafter 5.6 kg. of carbon bisulphide are added and the mixture is kneaded for three hours, then 18.7 kg. water are added followed by half an hour's kneading, and finally 1.2 kg. carbon bisulphide is added and the mixture is kneaded for 3 hours.  By dissolving the mass in 120 kg. water and ripening the solution a viscose ready for spinning is obtained.  Viscose which filters well can thus be obtained from cellulose of high alpha cellulose content without the use of a large excess of carbon bisulphide and/or of caustic soda.
Patent GB-1349814-A (GB)
Title: Digital read-out actuator-indicator for multi-turn shaft-actuated instruments
IPC: G06M1/16
Filed: 1972-05-10
Abstract: 1349814 Counting apparatus; indicating knobs BOURNS Inc 10 May 1972 [10 Jan 1972] 21701/72 Heading G4D  A digital counter mounted in an operating knob for a multition potentiometer or the like and indicating in hundredths of a turn the position of the potentiometer has a plurality of number wheels 38, 40, 42, the lowest 38 of which is driven at a speed five times that of the knob, by a driving gear 38p, and has the decade of numerals printed twice in succession around its circumference so that, while the number wheel still indicates in hundredths of a turn, its speed and therefore wear are reduced. The outer shell 24, 28 of the knob are secured to the potentiometer shaft S by a set screw 24c. Within the shell 24 is a gear 22 prevented from rotating by lugs 20k attached to the potentiometer. Rotable in the other half 28 of the shell is a base 32 supporting the counter. The base 32 is coupled by three planet gears 26 pivoted in the shell 24 to the gear 22 so that it too remains stationary. Teeth 28g on the inside of shell 28 drive the gear 38p to operate the counter. The number wheels of the counter are coupled by Geneva type gearing the lowest wheel 38 having two sets of transfer teeth so that the tenths wheel 40 is rotated two steps for each rotation of the hundredths wheel.
Patent GB-846304-A (GB)
Title: Device for holding elongated articles
Inventor: EMERY JOHN CONRAD
IPC: F17C13/08
Filed: 1957-07-09
Abstract: 846,304. Stud-and-socket fastenings. BRITISH OXYGEN CO. Ltd. July 9, 1958 [July 9, 1957], No. 21758/57]. Class 44 A device for holding an elongated article such as a gas cylinder in a substantially upright position comprises a member adapted to embrace the article and a co-operating part for mounting on the structure the member being adapted detachably to engage the part the arrangement being such that when the member is engaged with the part and the part is mounted on the structure the member is permitted to swing about a horizontal axis. As shown the embracing member consists of a loop 1 having a projection consisting of a protuberance 2 a neck portion 3 and an enlarged spherical end 4. The co-operating part consists of a backing plate 5 with fixing holes 6 and a projecting boss 8 provided with a recess 9 forming a socket for the end 4 of the projection. The boss 8 also has a slot 10 communicating with the recess 9 for receiving the neck portion 3 so that the embracing member can swing between a vertical position and a horizontal position. In a modification the spherical end 4 can be replaced by a cylindrical end. The loop 1 can also be replaced by a pair of arms.
Patent GB-645508-A (GB)
Title: Improvements relating to wave guides
IPC: H01P5/12
Filed: 1948-08-18
Abstract: 645,508. Wave-guides. BRITISH THOMSON-HOUSTON CO., Ltd., and TAYLOR H. B. Aug. 18, 1948, No. 21825. [Class 40 (viii)] In a T-junction between rectangular waveguides disposed in overlapping relation with the common wall portions removed, a tapered metal block is positioned within the feeding guide in the region of the overlapped portions, the apex of the taper being towards the direction from which energy is to be fed. In Figs. 1 and 2, for an H-plane junction, a feed-guide 1 and branchguide 2 overlap on their broad faces, the common wall part a, b, c, d being removed. A metal block 3 in guide 1 is tapered at 45 degrees in three directions to produce an apex 4 which is in the centre of the cross-section of the guide 1 and about one-third of the width of the guides from line bc. In Fig. 5 for an E-plane junction, the narrow face of the feed-guide 1 overlaps a broad face of guide 2. In this case the metal block 3 has a simple taper in the plane which ends at 4 a short distance from the end of the feed-guide 1.
Patent GB-790654-A (GB)
Title: Improvements in or relating to turbines
Inventor: FORSYTH GEORGE HOWARD
IPC: F01D25/26
Filed: 1955-07-28
Abstract: 790,654. Turbines. VICKERS - ARMSTRONGS (ENGINEERS), Ltd. June 11, 1956 [July 28, 1955], No. 21881/55. Class 110 (3). An axial flow turbine comprising an outer casing 4 around and supporting an inner casing 20 and a nozzle box 8 has a sleeve 9 integral with the nozzle box which passes through the outer casing 4 and carries a gland 30 and a wall 14 also integral with the nozzle box which extends into sealing engagement with the outer casing 4 and separates the part of the outer casing 4 containing the inner casing 20 from a part of the outer casing which is used to pressurize the exterior of the nozzle box. The casing 4 has an inlet 5 and outlet 6 through which steam from a boiler (not shown) is passed to a superheater supplying the turbine through an inlet 7. The sleeve 9 passes through a bush 10 welded to a boss 11 forming part of the casing 4. Ramsbottom rings 13 form a seal between the sleeve and the bush. The wall 14 has a flange 15 which is held against a shoulder 16 by a ring 17 keyed to the inside surface of the casing 4 and a split ring 18. The inner casing 20 is split axially and held together by bolts 21. The casing 20 has a rib 24 which is held between a flange 23 on the ring 17 and the flange 15. Studs 26 secure the ring 17 to the inner casing. The outer casing 4 is split in a plane transverse to the rotor axis into two parts 4A, 4B. Specifications 782,655 and 782,658 are referred to in the Provisional Specification.
Patent GB-882111-A (GB)
Title: Esters of thiocarbamic acid
IPC: A01N47/12
Filed: 1958-02-28
Abstract: The invention comprises thiocarbamic esters of the formula <FORM:0882111/IV (b)/1> wherein R1 represents a 2,3-dichloroalkyl group and R2 and R3 are each C1-4 alkyl groups.  The compounds are prepared by heating a compound R1X (where X represents halogen) with an alkyl thionocarbamate of the formula <FORM:0882111/IV (b)/2> or with an aqueous solution of a thiocarbamate of the formula <FORM:0882111/IV (b)/3> where M represents an alkali metal.  The latter starting materials are suitably prepared by reacting carbon oxysulphide with a solution of an amine R2R3NH in an alkali metal hydroxide.ALSO:A phytotoxicidal composition having additionally some defoliant and nematocidal activity comprises a thiocarbamic ester of the formula <FORM:0882111/VI/1> wherein R1 represents a 2, 3-dichloroallyl group and R2 and R3 are each C1-4 alkyl groups, together with an inert liquid or finely divided solid diluent and, if desired, a dispersing agent.
Patent GB-585196-A (GB)
Title: Improvements relating to vehicle or like seats
IPC: B60N2/16
Filed: 1944-11-09
Abstract: 585,196. Adjustable seats. WEST, E. C. Nov. 9, 1944, Nos. 22078/44 and 14592/45. [Class 52 (ii)] A tiltable, horizontally adjustable seat frame a, Fig. 1, has a horizontally slidable catch h for securing the bowed members b to a slide c, a vertically slidable catch n for securing the slide c to the guide i, and a manually operable lever p which operates both catches, said lever passing through a boss q and having a swivel connection with a boss r on the guide catch n. Rollers d enable the seat frame a to be rocked relatively to the slide c, while rollers k support the slide part in the guide i. For horizontal adjustment, the catch n is released by pressing down the lever p, catch R acting as a fulcrum, while for vertical adjustment the lever p is moved laterally, the boss r acting as a fulcrum, thereby disengaging the catch h from the particular enlargement f in the slot c, enabling the inclination of the seat to be adjusted. The lever p passes through a slotted gate t on one of the slide parts c, the slot being right angled to prevent simultaneous sliding and tilting movements of the seat. In a modification, Fig. 3, the bowed members b are connected to the slide parts c by pivots w, and a slotted plate x is fixed to one or each member b. The plate x is locked by a catch h, and the action of the lever p is the same as that described for Fig. 1.
Patent GB-802817-A (GB)
Title: Improvements in or relating to bearings, oil seals and the like
IPC: F16C33/74
Filed: 1955-07-29
Abstract: 802,817. Bearing bushes. DRYSDALE, A. Oct. 29, 1956 [July 29, 1955], No. 22080/55. Class 12 (1). [Also in Group XXVI] A bearing bush comprises a thin walled cylindrical outer steel housing 11 surrounding annular rubber rings 12 and two rings 13 fitted within the rings 12, which rings 13 are split by saw cuts 14 made at an angle to the axis of the bush so as to make them radially contractable. The rings 13 are provided with wide radially curved keyways 15, the corners of which are undercut or dovetailed. A dovetailed, curved spacing element 16, 17 is provided for insertion into each keyway. A sealing or bearing ring 18 having a wall of uniform thickness, which is gapped by cutting, is provided to fit concentrically within the ring 13. The end faces of the ring 18 on either side of the gap are chamfered so that their edges are sharp and they fit against the edges of the spacing element 16, 17 exactly. The two rings 13 with the two inner sealing rings 18 are assembled within the rubber rings 12 so that their spacers 16, 17 are diametrically opposite to each other. Wear of the inner surface removes material from the edge contacts and permits contraction sufficient to take up the wear. A pressure ring 21 containing a rubber sealing ring 22 is located between the bearing bush and a clamping element 25.
Patent GB-1334926-A (GB)
Title: Process and apparatus for stabilising a flexible elongate body in a particular form
IPC: B26D1/00
Filed: 1971-04-19
Abstract: 1334926 Cutting plastic material P K NOORDENBOS 19 April 1971 [20 Feb 1970] 22137/71 Heading B5A In a process for the setting in a particular form of a flexible elongate body, e.g. a cutter wire, supported by a number of bearings in such relative positions as to permit the body to assume a desired shape, the body is caused to rotate about its geometrical axis while the body and bearings are being positioned relative to each other. A flexible cutter wire 7 is electrically heated and mounted in relatively adjustable bearings 11 to provide a cutter of desired shape. A motor 16 rotates the wire about its longitudinal axis. Each bearing is pivotally carried at one end of a support 5 slidably received in a carriage 6; the opposite end of the support engages a profile 1 so that as the carriage traverses the profile the wire takes up the profile shape, whereby a block of material 9, e.g., of foamed polystyrene, is appropriately cut. The profile may be constructed similarly to the cutter wire and mounted on supports 3 extending from a holder 4. In a modification, each cutter bearing is carried at the end of its support by electrically heated wires which converge on to the bearing and act as cutters.
Patent GB-776504-A (GB)
Title: Improvements in or relating to tool handles
IPC: B25G1/00
Filed: 1955-08-02
Abstract: 776,504. Handles. TRUE TEMPER CORPORATION. Aug. 2, 1955 [Aug. 2, 1954], No. 22166/55. Class 61 A tubular metal handle 10 for hammers, axes and similar tools has a cylindrical head end 16 joined by an intermediate portion 17, having flattened sides, to a shank 18 of ellipitical shape in cross-section. A rubber grip 14 covers a substantial portion of the shank 18 of the handle. A steel hammer head 11 is attached to the handle by means of a pin 13. Alternatively, the handle may be so press fitted into engagement with the hammer head as to render the pin 13 unnecessary. The hammer head 11 may be provided with a tapered opening 16<SP>1</SP> and the cylindrical head end 16 may be tapered slightly for tight fixing in the tool head.
Patent GB-1489460-A (GB)
Title: Sewing machines
IPC: D05B19/00
Filed: 1975-05-22
Abstract: 1489460 Sewing machines UNION SPECIAL CORP 22 Mav 1975 [27 Sept 1974] 22203/75 Heading D1G A sewing machine, e.g. group stitch machine for sewing on buttons, having a main drive shaft 18 drivably connectable through a clutch to driving pulley 42 is provided with a stop motion mechanism comprising a lever 41 for actuating the clutch and a lever 37 for lockingly engaging a disc 43 to stop shaft 18, these levers being rocked in unison e.g. through a shaft 34 by a rock lever 47 carrying a cam follower 48 riding on a cam 49 which is rotated by a shaft 51 driven from the shaft 18 through reduction gearing, the profile of cam 49 having two steps 65, 64 so that when follower 48 drops on to step 65 the levers rock sufficiently for lever 41 to disengage the clutch and the shaft 18 continues to coast and slow down until the follower drops onto step 64 and lever 37 locks the shaft. The coasting interval may be I to 1¢ revolutions of the drive shaft and is adjustable by a second cam 50 displaceable relative to cam 49 to vary the effective length of step 65. As shown cam 49 has two sets of steps, one of which is selectively rendered inoperative by a horse-shoe shaped member 58 according as to whether an 8- or 16-stitch cycle is required. A chain operated by a foot treadle rocks the levers to allow the machine to start. A buttonclamping mechanism 31 is pivotally raised by a lever 25, link 21, rock member 20 and eccentric 19 on shaft 18 at the end of each cycle, rocking of lever 47 bringing the link 21 and member 20 into engagement through a linkage 35, 36.
Patent GB-418930-A (GB)
Title: Improvements in and connected with apparatus for applying treads to the covers of pneumatic tyres
IPC: B29D30/54
Filed: 1933-08-09
Abstract: 418,930. Moulding wheel tyres. BURCH, A. E., and SMITH, F. W., 561, Mt. Alexander Road, Moonee Ponds, Victoria, Australia. Aug. 9, 1933, No. 22241. [Class 87 (ii).] A mould for re-treading and repairing the outer covers of pneumatic tyres comprises a combined full-circle mould and a sectional mould, each of which can be used alone or simultaneously, and each capable of adjustment for treating tyres of varying pattern, diameter, and width. In treating a cover in the fullcircle mould, one of a range of annular packing rings 32, Fig. 8, of varying thickness is selected and placed in the mould to reduce the diameter to that of the tyre plus the thickness of the matrix. One of a series of skirt rings 10 is then placed inside the ring 32 and is flanked by as many interlocking matrix rings 33 as are necessary to build up the required width of tyre. A second skirt ring 10 mounted on the swinging door of the mould completes the assemblage when the door is closed. A packing- ring 31 may be placed between the door and the mould casing when very wide covers are being treated. Prior to closing the door, the cover is placed in the mould with an extensible sand-bag core 16, Fig. 7, in its interior. Pressure applied to the radial screw arms 13, Fig. 2, then forces the sand-bag outwards and forces the cover into close engagement with the matrix for the vulcanizing operation. The sectional mould comprises a casing 9 which receives the covers of larger tyres direct, and which also is adapted to receive any one of a series of inner members 17 each carrying a tread section 18 for a particular size and make of tyre. Pressure is applied to the cover by means of a sand-bag actuated by the screws 20 mounted on the pivoted arms 21. Steam for vulcanizing is passed through channels in the various casings, and passes through the fullcircle mould and the main casing of the sectional mould in series, but a separate branch from the main supply pipe is used to supply the inner member 17.
Patent GB-222145-A (GB)
Title: Electric metal melting furnace
IPC: F27D11/08
Filed: 1924-09-20
Abstract: 222,145. Hirsch, Kupfer-und Messingwerke Akt.-Ges. Sept. 20, 1923, [Convention date]. Electrode furnaces.-In electrode furnaces for melting easily evaporating metals, electrode packing g of heat retaining material is arranged between the electrode cooling means k and the hole in the furnace lining through which the electrode passes. In a rotary furnace the! electrodes a pass through a sleeve c of chamotte or other heat accumulating material located in the furnace wall b. A refractory ring e containing asbestos packing g is held in contact with a flange c<1> on the sleeve c by means of bolts f pivoted to a sleeve d surrounding the sleeve c. The cooling member k is firmly connected with the furnace frame and carries a screwed sleeve i adapted to press a packing ring h against the outer surface of the ring e and the electrode.
Patent GB-714675-A (GB)
Title: Improvements in or relating to safety or protective cut-outs for electrical immersion heaters
IPC: H05B1/02
Filed: 1950-09-11
Abstract: 714,675. Thermal switches; switches partly electromagnetic. SARUM ELECTRIC, Ltd., and SPARROW, G. E. Dec. 11, 1951 [Sept. 11, 1950; Sept. 28, 1950], Nos. 22315/50 and 23773/50. Class 38(5) When the circuit of an immersion heater is broken at a predetermined temperature, it is maintained open by mains-energized means, such as an electromagnet, so long as the mains are energized. In one form of switch, Fig. 1, the contacts are in series with the heater 3 and are carried by adjustable resilient blades 21, 27, the blade 21 being actuated by a rubber diaphragm 12 connected to a capsule 9. Blade 21 forms a toggle with a lever 32 pivoted at 34 and carrying, or serving as, the armature of an electromagnet 37 which is connected across the mains. The arrangement is preferably such that the contacts open just as the toggle crosses its dead-centre position, the contacts then being held open by electromagnet 37 until it is de-energized. In a modification, Fig. 5, the lever 32 is replaced by a lever 38 which has a catch 39 which engages under blade 21 when the contacts open and retain it until a spring 40 pulls lever 38 to the right on de-energization of magnet 37<SP>1</SP>. To obtain a snap-action in this arrangement, the diaphragm may be of metal and is dished. The above switches are particularly suitable for A.C., and in a D.C. form, Fig. 3, the contacts 22, 28 are arranged to close on temperature increase to energize a relay coil 42 The relay armature 43 is thus moved clockwise and carries a contact stack down to open contacts 46<SP>1</SP>, 50, and 47<SP>1</SP>, 51, in series with the heater 3, and to close contacts 48<SP>1</SP>, 52 which short-circuit the contacts 22, 28, so that, as long as the mains remain energized, the heater is disconnected even after contacts 22, 28 reclose. The blade 21 may alternatively operate a mercury switch.
Patent GB-590224-A (GB)
Title: Improvements relating to the moulding of mottled plastic articles
IPC: B29C43/00
Filed: 1944-11-13
Abstract: 590,224. Buttons. HORNFLOWA, Ltd., and WINTER, H. A. M. Nov. 13, 1944, No. 22360. [Class 43] [Also in Groups V and XV] A method of moulding buttons having localised coloration or motting in their surface comprises using a rubber matrix d, Fig. 5, with raised areas e, to transfer ink from a correspondingly shaped inking pad to the required areas of a mould part a, Fig. 1, before the moulding operation. Each mould part is provided with a corresponding matrix. The ink may be of a sim lar composition to that of the button, e.g., a resin in a suitable vaporisable solvent. The finished surface of the button may represent natural horn. The mottling may include the forming of any design or lettering and several colours may be superposed in successive printing operations on the mould parts.