baber/WOPTO huggingface dataset:
Patent GB-834211-A (GB)
Title: Process of adiabatic calcination of alumina hydrate
IPC: B01J23/40
Filed: 1956-08-15
Abstract: g -Alumina having a surface area of 350-550 sq. metres/gram is prepared by calcining large particles of alumina hydrate, containing a predominant amount as the trihydrate, and from 5 to 50% as the monohydrate and amorphous forms, in a fixed bed, by passing a heated gas through the bed, all the heat required for the calcination being provided by the hot gas.  The alumina hydrate may be prepared by precipitating an alumina hydrogel from aqueous solution, followed by ageing the precipitate so formed, followed by tableting or extrusion. The calcination is performed in two stages.  Firstly the alumina is dehydrated, the bed not being above 700 DEG  F., the gas having a dew point of up to 125 DEG  F., preferably between 65 DEG  and 125 DEG F., and the temperature of the incoming gas may be up to 910 DEG  F. in an example.  The alumina is now calcined between 750 DEG  and 1200 DEG  F. or more, the dew point of the gas being below 30 DEG  F., preferably below -30 DEG  F., or dry air (which has a dew-point < -90 DEG  F.).  The product is cooled with a stream of dry air passing through it.  The gas for drying and calcining is supplied at from 150 to 1500 cu. ft. of alumina per hour at a superficial velocity of 0.05 to 0.5 feet per second.  Catalysts.-The alumina thus formed is very suitable as a catalyst support.  Thus, it may be impregnated with metals of the platinum group, especially platinum, for use as a petroleum hydrocarbon reforming catalyst.  The impregnation of the base may take place either before or after the alumina hydrate is dried, or even after the calcination, in which case the particles should be recalcined. Thus, the alumina hydrate may be treated prior to tableting with aqueous chloroplatinic acid, followed by hydrogen sulphide to precipitate the platinum, followed by drying and tableting or extrusion.  Specification 834,210 is referred to.
Patent GB-628094-A (GB)
Title: Improvements in fret saw machines
IPC: B23D49/00
Filed: 1947-09-11
Abstract: 628,094. Fretsaws. HART, K. C. Sept. 11, 1947, No. 24986. [Class 145(ii)] In a fretsaw machine of the normal type and wherein the rear end of the upper vibratory arm 1 supports a carrier 16-22 for an abutment element 24 which is held in abutting engagement with the underside of the rear end of the lower vibratory arm 2 and is adjustable in the carrier for adjusting the tension of the saw blade, the arrangement is such that, in the event of the blade breaking, the rear end of the upper arm moves downward until arrested by a stop 29 and lowers the carrier to withdraw the abutment element from abutting engagement with the lower arm so that the rear end of the upper arm is freed from the lower arm. The stop 29 is preferably adjustable. As shown, a spring 28 tends to draw the rear ends of the arms 1, 2 together, whilst the upper end 24 of a tensioning screw 23 carried from the rear end of the upper arm by the framework 16, 13, 20, 22, 21 has normal abutting engagement inside the sleeve 25 with the underside of the rear end of the lower arm. On breakage of the blade 7, the spring 27 draws down the rear end of the arm 1 together with the carrier framework 16-22 until the collar or sleeve 29-adjustable on the rod 16 by means of a set screw 30-is arrested by the arm 19 carried by the standard 6, and also interrupts the abutting engagement at 24 by carrying the screw 23 downwards. This downward movement of the tensioning screw 23 may be employed to break the circuit to an electric driving motor 33.
Patent GB-945288-A (GB)
Title: Improvements in hydraulically actuated reciprocable tools
IPC: F01B23/06
Filed: 1962-06-29
Abstract: 945,288. Percussive drills. ATLAS COPCO A.B. June 29, 1962 [July 11, 1961], No. 25021/62. Heading B4C. [Also in Division F1] An hydraulically - actuated reciprocable impact tool comprises a casing 11 having a bore 12, a piston 16 reciprocable in the bore and having opposed faces exposable to fluid pressure, and distributing valves 48, 49, arranged to alternately admit pressurized fluid to act on the opposed faces in order to reciprocate the piston. The valves 48, 49 are hollow and each provided with passages 50, the valves being rotated in a housing 33 by means of gear-wheels 51, 52 forming part of an hydraulically-actuated motor. The valves 48, 49 are connected to an inlet 35 and an outlet 36 via, respectively, passages 46 and 47, and an accumulator 38 having a piston 37 loaded by springs 40. In operation, pressurized fluid is fed via the inlet 35 into the accumulator, then via passage 46, interior of the valve 48, and passage 24 to act on one side of the piston 16 causing the latter to rise, the fluid on the other side of the piston being forced through the outlet 36 via passage 25, interior the valve 49, passage 47, and accumulator 38. Simultaneously with the fluid passing through the valve 48, both valves are caused to rotate by means of the gear-wheels 51, 52 so that the pressurized fluid is fed alternately to opposite sides of the piston. The casing 11 of the tool is formed with chambers 23 so that at the end of each stroke of the piston, fluid is trapped in the chamber to dampen the movement thereof. Extensions 17, 18 are formed on the piston and reciprocate in sealing rings 20 located in recesses 22, small clearance being provided between the outside diameter of the ring and the recess 22 so that the pressurized fluid trapped in the respective chamber 23 is forced into the clearance space and presses the ring into greater sealing contact with the respective extension. The extension 17 of the piston strikes on each downward stroke, the end of a drill bit 29, the latter being mounted in a chuck 26 which may be rotated, during the percussive action, by means of an hydraulic geared-motor 27.
Patent GB-188849-A (GB)
Title: Improved method of and apparatus for casting cementitious blocks
IPC: B28B7/26
Filed: 1921-09-21
Abstract: 188,849. Atterbury, G. Sept. 21, 1921. Moulds; processes.-Cement &c. blocks are formed in moulds of such light construction as to require support against the initial hydrostatic pressure, the moulds being withdrawn from their supports while the material still requires support on all sides but is sufficiently set to allow the moulds to stand alone without distortion. The moulds Fig. 7 comprise sides 5, 4, and wedgeshaped members 8 adapted to slide along corresponding members 9, 12, Fig. 2, on the supporting cradles 1, layers 10 of gypsum being provided to ensure close engagement and prevent jamming. The bottoms 6 of the moulds are supported in blocks 7 and may carry cores which are stripped from the material during the removal of the mould. The members 12 may be adjusted vertically by screws 13. Specification 13122/10 is referred to.
Patent GB-1145461-A (GB)
Title: A flow detection signal generator for electromagnetic flow meters
Inventor: WADA ICHIRO
IPC: G01F1/58
Filed: 1967-05-31
Abstract: 1,145,461. Induction flowmeters. TOKYO SHIBAURA ELECTRIC CO. Ltd. May 31, 1967 [May 31, 1966], No.25101/67. Heading G1N. Eddy current losses in the conductive, non- magnetic, fluid-carrying duct 1, Fig. 1, of an induction flowmeter are reduced by providing the outer surface of the duct with grooves,3, or other surface discontinuities. The inside of the duct 1 may be insulated by a p. t. c. e. coating 2 from the fluid, and a coil assembly 4 and core 5 are mounted on the outside of the duct. Various forms of discontinuity disclosed include circumferential stopped grooves Fig.2 (not shown); axial stopped grooves Figs. 5 to 13 (not shown); circular recesses Fig. 3 (not shown) and flattened surfaces Fig. 4 (not shown).
Patent GB-1347096-A (GB)
Title: Cine projectors
IPC: G03B21/32
Filed: 1971-04-19
Abstract: 1347096 Cine projector AGFA-GEVAERT AG 19 April 1971 [24 March 1970] 25131/71 Heading G2E A cine projector includes a device for receiving a number of film cassettes 3 which is able to advance by a given distance for the projection of successive films 17. The device moves relative to the film receiving mechanism 8, 9, 10 of the projector 1 and an alignment mechanism ensures the correct positioning of each cassette with it. As shown the device may be a magazine 2 in which the cassettes 3 are stacked by means of ribs 3b, 3c and 5a, 5b engaging slots 2a, 3d. The alignment mechanism includes the end 12b of arm 12 which projects into the base of the cassette, which is in the projection position, and holds it against the action of leaf spring 7. With the advancement of the magazine to the next cassette the arm 12 pivots about the point 11 to a retracted position under the influence of the spring 13. This is possible due to the rotation of the eccentric 15 which performs one revolution each time the magazine 2 is advanced by one cassette width. Sprung arm 5 holds the cassettes 3 in place in the magazine. The arm 12 may be modified so that its end 12b is conical. Thus the spring 7 can be dispensed with and the end 12b aligns the cassette by virtue of its shape. In another modification, Fig.2 (not shown), magazine (17) is held between a spring (22) and a stop (20) mounted on a movable carrier 18, having guide 18a, on the projector (1). The alignment mechanism comprises an arm such as that shown in Fig.1 operating in conjunction with the spring (22).
Patent GB-368202-A (GB)
Title: Improvements in or relating to collar studs and neck-tie retainers
IPC: A44B3/04
Filed: 1931-09-07
Abstract: 368,202. Studs and necktie retainers. WEISS, E., 30A, Sternstrasse, Dusseldorf, Germany. Sept. 7, 1931, No. 25132. [Class 43.] In collar studs adapted for use alone and with a necktie retainer, and having a tilting head 3 provided with a recess 13 for receiving the retainer, the head is formed as a twc-armed lever, one arm 6 whereof engages in the upwardly tilted position, Fig. 2, with recesses 7, E, 11 in the shank 1 so that it forms an extension having the same cress section at the junction. As edge 12 bears against the shank to prevent tilting beyond a rightangle, and.the tip of the head is tapered to a rounded point 5 to facilitate insertion in a buttonhole, the tapering being in such a direction as to prevent tilting during insertion. The arm 6 may be of U-shaped or rectangular formation so as to engage with the recesses 7, 8, 11 in one position and to receive and hold a tongue 14 of the retainer on three sides above the pivot in the other position. When the retainer is inserted the head is thus locked in position. The nektie retainer may be of any form having a tongue 14 and a horizontal or vertical tongue 15 or a plate for engaging the tie.
Patent GB-1398038-A (GB)
Title: Well packer apparatus
IPC: E21B23/06
Filed: 1973-05-25
Abstract: 1398038 Wells &c SCHLUMBERGER TECHNOLOGY CORP 25 May 1973 [26 May 1972 (3)] 25175/73 Heading E1F In a well packer having a first one-way lock holding the packing in an expanded condition and a second one-way lock holding slips in an expanded condition, means are provided for disabling the locks to permit retrieval of the apparatus from a well. The packer comprises a mandrel 10 fixed to a nose 17 and slip expander 15, slips 12 slidable on the mandrel, a slip expander 14 slidable on the mandrel, a sleeve 38 joined to the expander 14 by a pin and slot connection 39, 41, an abutment 36 fixed to the sleeve 38, a sleeve 34 slidable on the mandrel and carrying packing 30, an abutment 35 fixed to the sleeve 34, the first and second locks 75, 50 for respectively holding the abutment 35 and the expander 14 against upward movement relative to the mandrel, and a release sleeve 67 for disabling the locks and joined to an extension 65 of the sleeve 34 by a pin and slot connection 70, 71. The packer is run into the well on a gas operated setting tool comprising a sleeve 101 and tension member 100, the packer being set at the required depth by moving the sleeve 101 downwardly and the member 100 upwardly. Downward movement of the sleeve 101 drives the release sleeve 67, the sleeve 34 and the abutment 35 downwardly along the mandrel 10 which is simultaneously pulled upwardly by the member 100, a sleeve 84 carrying the latch 75 also moving downwardly and the expander 14 together with the latch 50 moving downwardly to set and hold the slips. Further downward movement of the sleeves 67, 34 shears pins 44 to permit movement of the abutment 35 to set the packing 30. When the packer is set a tension stud 103 in the member 100 fails, releasing a split ring 107 from the nose 17 so that the setting tool may be withdrawn and production tubing connected to the packer by threads 90. To release the packer the production tubing is removed and a grapple is engaged with threads 88 on the sleeve 67 and pulled upwardly shearing a pin 72 to enable the sleeve 67 to move upwardly relative to the mandrel 10 to free spring fingers 83 formed on the sleeve 84 to release lock 75 and permit the packing to retract. Further upward movement of the sleeve 67 raises the sleeve 34 to engage the abutment 36 and shear pins 45 so that sleeve 38 is moved upwardly relative to the mandrel 10 and expander 14 to free the lock 50 to permit the expander 14 to be pulled upwardly to retract the slips so that the packer may be retrieved intact from the wall.
Patent GB-338517-A (GB)
Title: Improvements in telephone and like transmission systems
IPC: H04B3/14
Filed: 1929-08-19
Abstract: 338,517. Standard Telephones & Cables, Ltd., (Western Electric Co., hac.). Aug. 19, 1929. Manual exchange systems.-In a telephone transmission system, means for coupling auxiliary apparatus R, e.g. apparatus for converting a speech-frequency signal into a signal of ordinary ringing frequency and vice versa, to a line so that it receives currents arriving from one direction more effectively than those arriving from the other, comprise a transformer, one winding of which, shunted by a resistance, is in series in the line, the other in series with the apparatus R being bridged across the line. The Specification discusses the theory of the arrangement. In the arrangement shown in Fig. 6, a transformer and resistance are provided for each leg and a relay 11 short circuits the secondary of the transformer when the apparatus R has responded to the speech-frequency signal or when a ringing signal is received from the other direction. It is pointed out that ZO in Fig. 5 may be a current producer rather than a responsive device in which case it will transmit more readilv to one side of the transmission line than to the other.
Patent GB-705221-A (GB)
Title: Improvements in or relating to caliper gauges
Inventor: HORSTMANN BEVAN GRAHAM
IPC: G01B3/40
Filed: 1951-10-29
Abstract: 705,221. Linear dimension gauges. HORSTMANN GEAR CO., Ltd. April 1, 1952 [Oct. 29, 1951], No. 25235/51. Class 106 (2) A gauge having one or more pivoted gauging anvils 1, Fig. 5, and in which each anvil has a curved gauging surface 3 eccentric to its pivoted axis comprises a separate radiussed heel for each anvil housed in a complementary socket 5 in the gauge 2, a pivot pin 6 in the gauge 2 passing between the radiussed heel and the gauging anvil 1, and a clamping screw 7 in the gauge 2 projecting through the heel and into the pivot pin 6 to draw the heel into the socket 5. The anvil 1 is held in the gauge by the pin 6 passing through lugs 17, Fig. 6, formed integrally with the anvil 1 the lugs being located one on each side of the heel. The anvil 1 is held in its angularly adjusted position by the screws 10. When the gauging surface 3 of the anvils 1 are adapted to engage threaded members, sufficient axial clearance is allowed between the heel and the lugs 17 to permit a small movement of the anvil 1 parallel to the axis of the pin 6, the screws 10 being sufficiently slack to permit such movement. This movement prevents interference by helix angles when the gauge is applied to the threaded members. Fig. 1 shows a gauge with two pairs of opposed anvils 1, the upper and lower pairs being adjusted to represent the " go " and " no go" limits of tolerance. The gauges may be provided with cover plates enclosing the heads of the screws 7 and 10 to prevent their being tampered with.
Patent GB-315139-A (GB)
Title: Improvements in jockeys or rope grips for use in mechanical haulages and the like
IPC: F16G11/00
Filed: 1928-09-03
Abstract: 315,139. Smith, J. Sept. 3, 1928. Rope grips.-In rope grips of the kind comprising a fixed member and a relatively movable gripping member, the latter of which has an eccentric gripping face and is moved together with its pivot initially to grip the rope and rotated about the pivot to tighten the grip, the movement of the movable gripping member and its pivot is produced by an eccentric, roller, or the equivalent mounted on a lever. The fixed member 5 is attached to the stem 1 by a bolt and slot connection 12, 11 and rests on projections 3, 4 on the stem, or on packing pieces 13 placed between it and the projections. A large circular hole 15 and a slot 16 are formed in the upper end of the stem. A boss 18 on the actuating lever 17 rotates in the hole 15 and is provided with an eccentric boss 11 on which is mounted the movable gripping member 21. The parts are held together by a rivet 23 passed through a hole formed centrally in the boss 19. The movable member 21 has a grooved eccentric gripping face 24, the ends 25 of which are bevelled to facilitate the disengagement of the rope. When the lever is actuated to lower the member 21 into contact with the rope, a pin is inserted temporarily through a hole 28 into the slot 16 to maintain the member in central position. A member 32 attached to the lever 17 takes into a recess 29 formed in the back of the member 21. When the member 32 engages either of the ends of the recess, if the lever is moved in a downward direction, the member 21 will be raised and the rope released. In a modification, Fig. 5, the movable gripping member 35 moves in a horizontal plane and is actuated by a roller 55 loosely mounted on the lever 53.
Patent GB-719903-A (GB)
Title: Improvements in or relating to reeling devices for flexible hoses
IPC: B65H75/44
Filed: 1952-10-08
Abstract: 719,903. Hose reels. BIANCO, M. N. Oct. 8, 1952 [Oct. 9, 1951], No. 25263/52. Class 99 (2). Power-driven means, e.g. a piston 5 working in a cylinder 4 and connected to a rack 6 engaging a pinion 7 secured to a reel 3, for rewinding a hose onto the reel is controlled by a member, e.g. a lever 8 actuating a valve 9, mounted on the end of the hose remote from the reel. The hose may be flat in form and comprise a number of passages, one of the passages 1 being supplied at 22 with pressure fluid, e.g. compressed air, and branching to a delivery nozzle 23 and a valve 11 operated by a piston-cylinder device 12. On opening the valve 9 by the lever 8 compressed air passes through the passage 2 to the device 12 thereby opening the valve 11 to allow compressed air to pass through a pressure reducer 14 to the cylinder 4 so that the reel is rotated and rewinds the hose. By adjustment of the reducer 14 the rate of rewinding of the hose is varied. On releasing the lever 8 the compressed air in the cylinder 4 is exhausted through a vent 13 in the valve 11, and that in the device 12 is discharged from a vent 10 in the valve 9. In modifications, (a) the lever 8 controls the flow of compressed air to a piston-cylinder device which disengages a locking device so that the reel 3 is rotated by a spiral spring previously stressed during uncoiling of the hose, and (b) the lever 8 closes a switch so that power is supplied to an electric motor connected to the reel. Specification 683,181 is referred to.
Patent GB-534663-A (GB)
Title: Improvements in and relating to the casting of metals
IPC: B22D13/02
Filed: 1939-09-07
Abstract: 534,663. Mould materials. STANTON IRONWORKS CO., Ltd., WILSON, P. H., and DAWSON, S. E. Sept. 7, 1939, No. 25359. [Class 83 (i) ] To reduce the formation of deleterious gases during the centrifugal or other casting of iron pipes in metal moulds, these are coated with a lining composed largely of calcium silicide. A uniform layer of the finely powdered lining material is applied dry or as a paste mixed with a binder. It may include ferro-silicon, plumbago, sand or other less active or inactive material. A suitable mixture consists of 30 parts by volume of calcium silicide, 60 of ferro-silicon and 10 of silica sand. Specifications 242,617, [Class 83 (i)], and 534,035 are referred to.
Patent GB-343501-A (GB)
Title: Improvements in or relating to decorative panels or the like for building or other purposes
IPC: B44C5/04
Filed: 1929-08-20
Abstract: A sheet or slab of asbestos cement or cement and fibre composition is united with one or more sheets of calico, artificial silk or other woven fabric and a facing sheet of celluloid or casein composition by adhesive consisting of casein dissolved in cold saturated borax solution, or of 4 parts albumen with 1 part alkaline solvent.
Patent GB-674091-A (GB)
Title: Improvements in or relating to shipping bins and like shipping containers
IPC: B65D88/20
Filed: 1949-10-03
Abstract: 674,091. Feeding a hopper; skips. TOTE ENGINEERING, Inc. Oct. 3, 1949. [Oct. 12, 1948] No. 25380/49. Classes 78 (i) and 78 (iv). [Also in Group XVII] A box for shipping granular or like loads comprises comparatively rigid top and bottom walls and relatively flexible side walls to enable lateral shocks to be transmitted by the load. The top bottom and side members, 21, 15, 18 are of metal with welded joints and a top loading opening and hinged unloading door 36 are provided. The opening 23 is closed by a door 28 attached to a bar engaging a helical rim 24 of the opening. A lug is provided on the top wall opposite a hole in the door 28, for a sealing wire. The box is carried by legs 19 enabling tines of a lift fork to enter beneath it. A reinforcing bar 58 beneath the door 36 prevents a lift fork being inserted from the front except for tilting purposes, the corner pieces 35 on the top permit vertical stacking. The door 36 is closed by internal bolts 47 forced outwardly by turning a box 48. The corners of the box adjacent the door 36 are provided with fillets 57 to ensure complete emptying. Rubber gaskets 30, 43 ensure airtightness. Fig. 19. The box may be loaded with apples or the like by a spiral shoot comprising wires 62 supporting a canvas trough 63 and connected to a, dished receiving member located in the opening 23. The spiral may remain buried in the load. Specification 674,097, [Group XVII], is referred to.
Patent GB-578256-A (GB)
Title: Improvements in or relating to wheels for tractors and similar vehicles
IPC: B60C27/04
Filed: 1944-12-18
Abstract: 578,256. Vehicle wheels. GOLDUP, C. E. Dec. 18, 1944, No. 25405. [Class 144 (i)] Slipping-preventing attachments to wheels.- Wheels for tractor and like vehicles are fitted with pivoted strakes which are withdrawn into inoperative position by ratchet mechanism actuated by the wheel rotation and automatically projected into operative position, after release of the ratchet device, by the reaction of a spring. As shown applied to a twin wheel a, b, the strakes are journaled near their inner ends in a channel ring c fast with the wheels, and at their, inner ends in a second channel ring g loose on the ring c. Freely mounted alongside the ring g is a collar o through which pass rocking levers i, k adapted respectively to actuate the operating-pawl o<1> and a holding-pawl o<3> pivoted on the collar o and co-operating with racks o<2>, o<4> on the ring g. The levers i, k, are pivoted in lugs l on the ring c and project from the inner side of the wheel to abut selectively a stop n on a manually-adjustable crank m carried by a fixed part of the vehicle. In the full-line position shown in Fig. 1, the lever i is rocked on each rotation of the wheel to give a step-by-step angular movement to the ring g whereby the strakes are retracted. When fully withdrawn, the lever i is moved by a spring i' into a recess g' in the ring g so as to clear the stop n. To project the strakes, the crank m is adjusted to bring the stop n into the path of the projecting end of the lever k to effect angular movement of a block q by which the pawls o', o' are freed. A spring h then reacts to reverse the movement of the ring g thereby rocking the strakes into operative position.