baber/WOPTO huggingface dataset:
Patent GB-1038757-A (GB)
Title: Improvements in or relating to a process for preparing hydroxyethyl cellulose
IPC: C08B11/08
Filed: 1965-03-24
Abstract: In a process for making hydroxyethyl cellulose by agitating particulate cellulose in a mixture of alkali, water, hydroxethylating agent and tert.-butyl alcohol as a dispersant, the tert.-butyl alcohol contains 2-25% by weight of isopropyl alcohol. Etherification may be effected at e.g. 20-150 DEG  C. using ethylene oxide, glycide, epichlorohydrin, butadiene monoxide or ethylene chlorohydrin.  The cellulose may be wood-pulp, cotton linters, chemical cotton, pretreated with alkali or otherwise prepared for reduction to desired particle size by milling, shredding &c.  In examples, hydroxyethyl cellulose of MS 1.56-2.12 is made by adding ethylene oxide to a mixture of cellulose, water, alkali, tert.-butyl alcohol and isopropyl alcohol at 30 DEG  C., which is then heated in stages to 50 DEG  and 80 DEG  C.  The dispersant/cellulose ratio is 10.4/1 ; the alkali/cellulose ratio is 0.32/1 ; the water/cellulose ratio is 1.8/1 .  The hydroxyethyl cellulose is dehydrated by acetone.
Patent GB-571847-A (GB)
Title: Improvements in or relating to the manufacture of bricks and the like
IPC: C04B28/18
Filed: 1943-08-04
Abstract: Bricks, boards and other shaped objects are prepared by mixing ashes, or mixtures of ashes with clinker crushed bricks or burnt clay, with the lime-containing sludge which is a waste product in the manufacture of acetylene from calcium carbide, pressing, rolling or extruding the mixture and then treating the shaped masses with steam. The proportions are from 97-40 to 3-60 respectively, the prepared mixture consisting of 10 per cent sludge from the carbide and 90 per cent ashes.  Before shaping, hardening, weather-proofing, strengthening or reinforcing agents may be added to the mixture. When crushed bricks are added, they are preferably weathered for about 3 months.
Patent GB-713132-A (GB)
Title: Automatic tourniquet
IPC: A61B17/135
Filed: 1952-05-19
Abstract: 713,132. Tourniquets. PACKER, J. K. May 19, 1952 [May 17, 1951], No. 12608/52 Class 81(2) An automatic tourniquet comprises a cuff, inflatable by a source of compressed gas, and a control valve actuated by a timing device to apply and release the pressure at predetermined intervals. The equipment comprises an inflatable cuff C, Fig. 1, for attachment around a limb, supplied with compressed carbon dioxide from a capsule enclosed in a casing G. The capsule is pierced by.actuating a lever 2 and the gas then passes through a pressure reducer P and a valve V which is actuated by a clockwork timing mechanism T. The reducing valve P, (see Fig. 11 not shown) is actuated by an aneroid in the usual manner, to maintain a pressure in the cuff of about ten pounds per square inch and the valve is in the form of a change-over disc valve, the disc of which can be moved by an external plunger and so functions as to connect the cuff either to the gas supply or to atmosphere, and, in the latter case, it also shuts off the gas supply. The timing mechanism is spring driven and drives two spindles independently, one carrying recessed timing discs 43, 45, Fig. 6, and the other carrying a stop plate 66 and an eccentric 63, which operates the valve plunger through a projection 67 on a follower 61. The plate 66 tends to urge the arm 53 into a slot in its corresponding disc 44 and when, by continued rotation of the latter, this actually occurs, the plate 66 is free to rotate through half a revolution where it is held by the opposite stop arm, until, following further rotation of the disc 43, the second arm 52 is able to drop into the next following slot. This cycle is continuously repeated and at each half-revolution of the shaft 64 the eccentric places the follower 61, and consequently the valve plunger, in their alternative positions. The timing discs 43,44 may be set independently of each other to vary the relative periods of full and zero pressure. As an additional safety device a stop is arrangd to come into operation shortly before the gas supply is exhausted, to maintain the cuff inflated.
Patent GB-1339106-A (GB)
Title: Purification of coffee oil as a stable coffee-aroma carrier
IPC: A23F5/48
Filed: 1972-03-17
Abstract: 1339106 Purifying coffee oil PROCTER & GAMBLE CO 17 March 1972 [19 March 1971] 12624/72 Heading C5C [Also in Division A2] A stable, purified coffee oil is obtained by a process comprising (1) vacuum distillation of crude coffee oil at a pressure of 0À1-60 mmHg. absolute and a temperature of up to 115 C. to remove highly volatile aroma constituents, (2) vacuum distillation of the residue of step (1) at 100-240 C. and at a pressure of not more than 100 ÁHg. absolute to remove sterol and diterpene esters, and (3) vacuum distillation of the residue from (2) at 240-310 C. and 9-20 ÁHg. absolute to yield a condensate of triglyceride coffee oil. The distillate from (2) is discarded but the aroma constituents distilled off in (1) may be condensed at liquid nitrogen temperatures and incorporated in the condensate obtained from step (3). The purified coffee oil containing the aroma-bearing constituents may be added to a coffee product such as instant coffee.
Patent GB-167555-A (GB)
Title: Improvements in or relating to the manufacture of alum and sulphate of alumina
IPC: C01F7/762
Filed: 1920-05-06
Abstract: Crushed alunite is roasted, preferably in the absence of material quantities of air and in a furnace in which the ore is passed down a series of hearths the bottom one or more of which are heated to 700-900 DEG  C.  The sulphur-dioxide, sulphur-trioxide and oxygen which are evolved thus come in contact with the descending alunite and the iron oxide contained therein, acting as a catalyst, causes the sulphur dioxide and oxygen to re-combine.ALSO:The invention consists in the preparation of alum and aluminium sulphate from alunite without the use of sulphuric acid.  The coarsely crushed ore is roasted, preferably in the absence of material quantities of air and in a furnace in which the ore is passed down a series of hearths, the bottom one or more of which are heated to 700-900 DEG  C.  The sulphur dioxide, sulphur trioxide, and oxygen which are evolved thus come in contact with the descending alunite and the iron oxide contained therein, acting as a catalyst, causes the sulphur dioxide and oxygen to re-combine.  The gaseous products from the furnace pass over some ground previously-calcined alunite in a drum or chamber into which sufficient water is sprayed to convert the sulphur dioxide into sulphuric acid, whereupon a substance is produced from which alum and aluminium sulphate are obtained by lixiviation.  The alum and aluminium sulphate may be separated by fractional crystallization or sufficient potassium sulphate, which may be obtained by extracting another portion of calcined ore with water, is added to combine with the free aluminium sulphate to form alum.  The residue of calcined alunite that cannot be employed as above described may be used as a potash-fertilizer or as a source of alumina and potash.
Patent GB-494771-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P1/26
Filed: 1937-05-04
Abstract: 494,771. Control of A.C. induction motors. BRITISH THOMSON-HOUSTON CO., Ltd. May 4, 1937, No. 12720. Convention date, May 6, 1936. [Class 38 (iii)] [Also in Group XXXV] For starting a polyphase motor 1 having a primary winding, each phase of which includes two winding sections, the ends of which may be individually connected to the supply, one winding section A, B, C of each phase is connected to the supply by closure of a switch 3, and simultaneously or subsequently a portion of the other section A<1>, B<1>, C<1> is connected in parallel with a portion of the energized section by closure of a switch 6, and then the ends of the sections A<1>, B<1>, C<1> are connected to the supply by closure of a switch 5 so as to energize the remaining portions of the sections A<1>, B<1>, C<1> in parallel with the remaining portions of the sections A, B, C. Specification 347,277 is referred to.
Patent GB-912090-A (GB)
Title: Improvements in or relating to explosive projectiles
IPC: F42B12/20
Filed: 1959-04-15
Abstract: 912,090. Grenades. LEITNER, K. April 15, 1959 [April 21, 1958], No. 12720/59. Class 9 (1). A hand grenade has a casing 1 of thermoplastic material, such as polyethylene or rubber, covering a concrete jacket 2 housing the explosive charge 6 which is packed around a detonator 5. Into the detonator extends a metal tube 3 containing a delay composition 4. The charge 6 is preferably a plastic explosive. A percussion cap 7 is housed in the outer end of the tube 3 and the grenade is closed by a cap 8 of the thermoplastic material. Iron splinters or balls may be embedded in the concrete. In a modification to be discharged from mortars, the whole of the space within the concrete is occupied by the explosive charge. The concrete may be replaced by other materials, which may be smoke-producing or of an incendiary nature, e.g. phosphorus.
Patent GB-484630-A (GB)
Title: Improvements in or relating to devices for holding and dispensing paper rolls combined with pencil or lipstick holders
IPC: B43K29/12
Filed: 1937-05-04
Abstract: 484,630. Pencil holders &c. ROSS MANUFACTURING CORPORATION, R. W., and ROSS, J. M. May 4, 1937, No. 12726. [Class 146 (iii)] [Also in Group XVII] In a barrel-shaped device for holding and dispensing paper rolls combined with a pencil or lipstick holder, and having two superposed outlet portions forming an outlet channel adapted for constant sliding frictional engagement with the paper of the roll and a feed window in one of the portions, the inner of the portions is offset near the free edge of the outer portion so as to provide a substantially continuous cylindrical outer surface to the barrel and to divert the free end of the paper from its circular direction into the outlet channel The paper roll container comprises a cylindrical chamber 12, Figs. 1 and 2, of sheet metal, resinous. cellulosic, or other formable material, formed with two superposed walls 14, 15 between which the paper is withdrawn. The wall of the chamber is engaged by spiral grooves 18 in closures 8, 9, but one or both ends of the member 15 may be free so that the member may press resiliently on the paper. The exit slot 16 for the paper is defined by the tearing edge 19 and an offset 17, and a feed aperture to admit the finger is provided in the member 19. The closure 9 carries a screwed eraser holding ferrule 10, on which screws a pencil 6, or a plain ferrule on which fits a telescopic lipstick holder In a modification the slot 16 is formed in a cylindrical wall and the member 15 is a separate piece cemented or otherwise secured to the inside of the wall. One or both ends of the member 15 are rounded off at 21, Fig. 7, for easy insertion of a new paper roll. The cylinder may be rolled up from a blank formed with a tongue 25 which forms a reinforcing ring at one end. A removable cap and a preferably fixed cup 26 are carried at either end of the barrel, and into the cup screws the end of a pencil or a lipstick holder. One end of the slot may be closed by securing together the superposed portions of the blank. The paper roll may be cross-perforated.
Patent GB-1489837-A (GB)
Title: Apparatus for treating molten metals
IPC: C21C7/00
Filed: 1975-03-26
Abstract: 1489837 Treating molten metal FOSECO INTERNATIONAL Ltd 26 March 1975 [4 April 1974] 12757/75 Heading F4B [Also in Division C7]  Apparatus for treating molten metal includes a cylindrical vessel mounted for rotation with its axis horizontal, so that metal contained therein can be moved in and out of contact with a treatment agent contained in a compartment mounted on the wall of the cylinder and opening to the interior of the cylinder through a refractory grid. As illustrated the vessel 1 having a filling/pouring spout 4 is supported in bearings 3. Reagent is located in chamber 5 to which external access is available through removable cover 6.
Patent GB-138248-A (GB)
Title: Improvements in boxes or like containers
IPC: B65D6/16
Filed: 1919-05-21
Abstract: 138,248. Corben, C. May 21, 1919. Knock-down boxes; lids.-Relates to collapsible boxes, cases crates, &c. of the kind comprising two end-members b hinged to a bottom a and two side-members each formed of two parts d, e hinged together, the corresponding parts of the two side-members having different heights. According to the invention, holes (not shown in Fig. 1) are made in the lid h and in the parts c, so that, when the box has been collapsed and the lid h has been placed between the two parts c, a screw j may be inserted, to secure the parts in the collapsed condition. If the parts e do not overlap when folded, the screw j is passed through one part e, then through the lid h, and finally into a screw-hole or nut in the bottom of the box. When the box is erected, the lid h may be secured in place by bolts g arranged to pass through holes in the lid, the ends of the bolts being perforated .to receive sealing-wires &c. Metal fittings b<1>, e<1> may be provided to secure the ends and sides together after erection.
Patent GB-167823-A (GB)
Title: Safety-pin-like fastening-mechanism for buttons, brooches, and the like
IPC: A44B9/16
Filed: 1920-05-10
Abstract: 167,823. Kalus, C. A. May 10, 1920. Safety - pin fasten ings; catches for hinged and like pins -A safety-pin fasten ing, for brooches, but tons, &c. is provided with a pin of which the point lies closely against the back of the brooch &c. when shut and which is engaged by two catches. 'As shown in Figs. 3 and 4, the pin consists of a bent length of wire b, c, d, one arm d of which is fixed to the plate k, and the other bent so that the cranked part e engages between the two catches h, i while the point lies closely against the back of the brooch. In a modification, the openings of the two catches face in opposite directions.
Patent GB-202242-A (GB)
Title: An improved method of making blanks for metallic collapsible tubes and the like
IPC: B21C23/01
Filed: 1922-05-12
Abstract: 202,242. Thompson, A. J. May 12, 1922. Cased forms; capsules; collapsable tubes; nozzles.-Coated blanks for the manufacture of collapsable tubes, capsules, lip-salve boxes, sprinkler stoppers, &c. are made in two operations only by casting a disc of lead, tin &c. and coating with tin or other superior metal electrolytically or by dipping. Specifications 15155 / 06 and 5747/07 are referred to.
Patent GB-374586-A (GB)
Title: Improvements in apparatus for spraying agricultural ground, tennis courts, sports grounds and other open spaces
IPC: B05B3/04
Filed: 1931-05-02
Abstract: 374,586. Spraying apparatus ; liquidpressure engines. WYLD, W. M. S., Upper Halliford, Middlesex. May 2, 1931, No. 12994. [Classes 69 (ii) and 69 (iii).] A perforated spray pipe for watering land is oscillated about its longitudinal axis by a motor driven by the water supply the reciprocations of which are controlled by an instantaneous valve mechanism. A double acting oscillating cylinder a, Figs. 1 and 2, is pivoted to a frame f and has its piston-rod o<1> connected to a crank pin c on a disc d<1> mounted on a sleeve d in which the spray pipe b is angularly adjusted by a pin m passing through a sector-shaped slot b<1> in an extension on the pipe h. Water is supplied to the cylinder a through a pipe s<1> and a distributing valve v. The valve is actuated by a spring p<1> attached to a pivoted arm q and bearing at its other end against a pin w. Pins r, r<1>, or the crank disc d<1>, bearing against the arm q flex the spring until it overrides the pin w and impinges against a tappet v<1> to operate the valve v. By variously locating the pins r, r<1> and adjusting the pin w the angle of oscillation of the pipe b may be varied.
Patent GB-1523324-A (GB)
Title: Dc to ac inverter
IPC: H02M7/517
Filed: 1975-09-26
Abstract: 1523324 Inverters; standby supply systems SIEMENS AG 26 Sept 1975 [13 Aug 1975] 13016/78 Headings H2F and H2H An inverter, for use as a standby supply in the event of failure of a mains supply U N , comprises a control circuit which prevents commutation of the controllable rectifiers n1-n4 in the inverter if a commutation signal would occur immediately after the starting of the inverter. A control device 10 monitors the mains supply voltage and current and on failure of the mains supply opens a switch 3. The device 10 starts the inverter by supplying a start signal to a flip-flop 11 which unblocks gates 22-25 to release firing signals from stores 16, 17 to the thyristors. A switch 6 is closed by the device 10 to connect the inverter output via a filter 2 to a load 1. In order to prevent the release of any commutation signals to the inverter immediately following the start command, the control circuit includes monostable delay devices 12-14 which temporarily block gates 18-21 thereby blocking the signals from a generator 8a. In a modification, Fig. 5 (not shown), the delay devices are omitted and the gates 18-21 are blocked when sensors in the commutation circuits of the inverter detect a commutation current in excess of a threshold value.
Patent GB-551449-A (GB)
Title: Improvements relating to the mounting of platforms and the like on the sea bed
IPC: E02B17/02
Filed: 1941-10-09
Abstract: 551,449. Platforms &c. mounted on the sea bed. MAUNSELL, G. A. Oct. 9, 1941, No. 130,23 [Class 68 (ii) A platform or house C for guns, lights or other . apparatus is supported on the sea-bed by a base A consisting of a hollow-reinforced concrete grid and four circular reinforced concrete legs B. The structure is built ashore and floated by pontoons E to the desired position.
Patent GB-732486-A (GB)
Title: Quickly operable conduit clamp for example for connecting waveguides
Inventor: HAMILTON JEAN WILLARD
IPC: H01P1/04
Filed: 1953-05-11
Abstract: 732,486. Clamps. AIRTRON, Inc. May 11, 1953. No. 13103/53. Class 44. [Also in Groups XXVIII and XL(b)] A clamp for clamping together two flanged waveguides or conduits A, B comprises lever. supporting brackets 31' associated with the flange 27 of guide A and clamping levers 29 pivoted to the supports 31 to bear against the flange 13 of the other guide B. The flange 27 has four bolt holes threaded to receive four headless bolts (not shown) which extend into corresponding unthreaded bolt holes 23 in the flange 13 and prevent relative rotation of the flanges. The brackets 31 are firmly held on the flange 27 by means of nuts 53 threaded onto the protruding ends of the locating bolts. Each bracket has two lugs 57 which carry between them a pivot pin for each of the clamps 29. When the clamps 29 are pivoted towards each other the U-shaped clamping surfaces 61 bear against the flange 13 and maintain it in contact with the flange 27. The clamps 29 are maintained in the clamping position by a U-shaped link 33 which may be swung vertically upwards to an inoperative position about a pivot 65. In the operative position the kinked end 69 of the link 33 engages a recess in the end of the lower clamp 29. In the modification shown in Fig. 7 the lower clamp is bifurcated, the two arms 75, 76 being held in the clamping position by means of a pivoted lever 77 which overlies the end of the upper clamp 29 and underlies the end of the arm 76.
Patent GB-1602319-A (GB)
Title: Bearings in universal joints
IPC: F16D3/26
Filed: 1978-04-04
Abstract: A bearing system in a universal joint for journaling each of the bearing pins at a cross trunnion includes a journal for receiving each one of the trunnion pins. At least two of the journals are mounted on a drive shaft flange and have projections which engage grooves in an end face of the flange for preventing radial and lateral displacement of the journals with respect to the flange. Each journal has a seating bore for receiving a pin of the cross trunnion. A bearing bushing, having a bottom wall and side walls, is carried in each seating bore. A roller bearing is positioned between the inside of the side walls of the bushing and the trunnion pin carried therein, and a removable guard ring is carried in an annular groove of each journal engaging the bottom wall of its respective bushing for securing the bushing in the seating bore, thereby permitting removal and replacement of the bushing and allowing the use of guard rings having different thicknesses to adjust for clearances.
Patent GB-957691-A (GB)
Title: Improvements in or relating to echo suppressors
IPC: H04B3/20
Filed: 1962-04-05
Abstract: 957,691. Combined radio transmitting and receiving systems; echo suppressors. WESTERN ELECTRIC CO. Inc. April 5, 1962 [April 11, 1961], No. 13107/62. Headings H4L and H4R. In a long-distance system of variable extent, such as one including a radio link involving reflection from a satellite, the momentary transmission delay of the system is determined and used to synchronize the operation of an echo suppressor with the probable time of echo return. In the system shown in Fig. 1, the terminal stations which have separate one-way paths 12, 13 and 120, 130 are interconnected by a radio link of which the antennae 18, 21 track a satellite 20 under the guidance of computers 19, 22. Echo suppressors are located at station W and comprise variable impedances 16, 26 controlled by amplifier-detectors 29, 30. An additional variable impedance 28 also controlled by 30 prevents the suppression of E-W transmission by speech signals which may have been stored in variable delay equipment 27 before 16 operates. The impedances 16, 26, 28 may be variable gain amplifiers or variolossers. In order to adjust the equipment 27 in accordance with the time of echo return, the distance of the satellite from both stations is measured by radar methods and the results are fed to the computer 19 which controls 27 accordingly. Suitable delay equipment, Fig. 2 (not shown), may comprise a rotating magnetic drum having spaced recording and pick-up heads, the speed of rotation being dependent on the time of echo return. In another system, Fig. 5 (not shown), the echo suppressors are located at an intermediate repeater station.
Patent GB-131341-A (GB)
IPC: F16J15/18
Abstract: 131,341. Compagnie des Forges et AciÚries de la Marine et d'Homecourt. May 3, 1917, [Convention date]. Recoil apparatus.-Relates to readily detachable packings for the pistons and stuffing-boxes of hydraulic brakes for ordnance which are adjusted before insertion, and consists in carrying a resilient and adjustable packing in a tubular cover, a portion of which in co-operation with a screwed tube constitutes an assembling and dismounting device. Fig. 1 shows a piston secured by a nut 13 against a ring 15 which bears on a. collar 16 on the piston-rod. On the ring 15 is mounted a centring washer 17 of fibre or soft metal having a serrated or notched periphery. A packing 14 makes a joint between the piston and the ring 15. The body 4 of the piston is shouldered to receive a packing' ring which is compressed by a ring 7, spring washers 8, and a nut 9. The nut 9 carries a cup leather 10, secured by a ring 11 and nut 12. Such a piston is adjusted in and stored in a tube 19, Fig. 3, of the same internal diameter as the cylinder 2 and is introduced into the cylinder in the manner and by the means shown in Fig. 2. The tube 19, which is closed at the ends by removable caps, is screwed at 3 into the cylinder 2. The other end of the tube is closed by a plug carrying a nut 24, through which passes a screwed tube 21, prevented from rotating with the nut and screwed into the tapped hole in the body of the piston. By this means a piston with its packing adjusted can be introduced into the cylinder 2, and by the same means can be withdrawn. Fig. 4 shows a stuffing-box constructed in a similar way to the piston and secured against a shoulder in a cylinder 29 by a nut 42. Such a stuffing- box can be adjusted in and stored in a tube as described above with regard to a piston, a tube 44 being provided for the adjustment of the packing 38 and to allow it to pass easily over the threaded end of the piston-rod as shown in Fig. 5, which shows means for placing the stuffing-box in the cylinder 29 similar to those shown in Fig. 2.