baber/WOPTO huggingface dataset:
Patent GB-710878-A (GB)
Title: Improvements in or relating to speed indicators, tachometers and like time/movement measuring instruments
Inventor: FRASER LEONARD
IPC: G01P1/04
Filed: 1951-05-30
Abstract: 710,878. Speedometers. CHADBURNS (LIVERPOOL), Ltd. May 30, 1952 [May 30, 1951], No. 12668/51. Class 106 (3) A tachometer, speed indicator or like time/ movement measuring instrument has an input shaft and a shaft forming part of the tachometer or like movement proper which shafts are geared together by variable speed gearing comprising two friction wheels the periphery of one of said wheels engaging the face of the other and one wheel being adjustable towards and away from the axis of the other, and means external to the casing of the instrument for effecting manually such adjustment of the variable speed gearing to compensate for variation in the characteristics of the instrument and particularly of the tachometer movement. The tachometer shaft 22, Fig. 2, is driven from the input shaft 12 through a continuously variable friction gear mechanism comprising a disc 23 axially movable along the shaft 12 and frictionally engaging a disc 24 fixed to the shaft 22. A spring 25 urges the disc 24 against the disc 23 and rods 27 interconnecting the disc 24 and a ring 28 retain the disc 24 upright. The tachometer movement is of the magnetic type comprising a permanent magnet 18 and a cylindrical armature 19 the axle 20 of which is restrained by a light control spring 21 and carries a pointer 15. The adjustment of the wheel 23 is effected by an external knob 32, Fig. 3, connected to the wheel 23 through a screw 31 and yoke 29. The input shaft 12 drives a direction tell-tale pointer 35 on a shaft 34 through bevel gearing 33. The instrument may include a revolutions counter.
Patent GB-1184912-A (GB)
Title: Magnetic Inspection method and means
IPC: G01N27/90
Filed: 1967-03-17
Abstract: 1,184,912. Acoustic inspection devices. NORTH AMERICAN ROCKWELL CORP. 17 March, 1967 [24 March, 1966], No. 12756/67. Heading H4D. Apparatus for inspecting a workpiece acoustically comprises means for producing a varying magnetic field which penetrates the workpiece and acts on an electrically conductive and/or magnetizable portion of the workpiece or on the workpiece to cause it to vibrate and so set up a standing wave in the workpiece. In the Fig. 3 embodiment oscillatory, pulsed or random noise signals from source 46 energize coil 32 in a flux-focusing cylinder 30 of high magnetic permeability material (e.g. ferrite, silicon-iron or steel) positioned on or near the surface of a workpiece comprising a honeycomb structure 20, 22 sandwiched between sheets 14, 16, 18. If part of the workpiece is electrically conductive, induced eddy currents react with the field of coil 32 and cause vibrations in the workpiece which are detected by microphone 34, accelerometer, or other transducer feeding display or recording systems 54, 56, 58. If structure 20, 22 and sheets 14, 16, 18 are non- conductive a conductive tape or spray-coating is applied to one workpiece surface. By applying the coil 32 and thus the field sequentially to different regions of the workpiece, varying the oscillatory frequency and monitoring the microphone output, regions where lack of bonding between the honeycomb structure and the sheets occurs can be located. The display or recording systems may comprise a cathoderay tube, meter, audible indicator, spectrum analyser or other means for determining variations in the amplitude, phase or frequency of the microphone output. In a modification (Fig. 5) a plurality of coils (72-82) disposed around a microphone (70) are energized sequentially to vibrate different regions of the workpiece in sequence.
Patent GB-809245-A (GB)
Title: Improvements relating to sewage treatment
IPC: E03F5/18
Filed: 1954-05-03
Abstract: 809,245. Treating sewage ; gravity-separation apparatus. SMITH, G. C. Aug. 3, 1955 [May 3, 1954], No. 12795/54. Classes 46 and 111. Sewage to be treated enters at 22, the upper chamber 10 of a primary settlement tank 10, 11 and flows through an aperture 13 in a partition 12, past a conical member 14 into the lower chamber 11. Effluent from the primary tank passes into and down a by-pass pipe 20 and thence to a secondary settlement tank 16 surrounding the upper chamber 10. Effluent from the secondary tank passes away at 23. Sludge from the lower chamber 11 may be withdrawn up a pipe 15, to which access is provided by a shaft 21. Preferably the member 14 is rotatable so that it may be rotated by the descending sludge such rotation serving to remove sludge adhering thereto and to prevent sludge from reentering the upper chamber. Preferably the base of the member 14 is of greater diameter than the aperture 13 to prevent gas and sludge from rising into the upper chamber. The partition 12 may be in the form of a conical hopper. The inlet pipe 22 may be directly above the aperture 13. According to the Provisional Specification the effluent from the secondary settlement tank overflows into a chamber from which it passes to disposal or is pumped to a bacteriological filter. The effluent from the filter is passed upwardly into a humus tank, located above the settlement tank and having a valve-controlled pipe connection with the primary settlement chamber so that flocculent or colloidal matter may be passed into the latter. Sludge collecting in the secondary settlement chamber is passed to the primary settlement chamber for removal.
Patent GB-873658-A (GB)
Title: Continuous polymerization process and apparatus therefor
Inventor: KIZER AUSTIN J
IPC: C08F2/00
Filed: 1957-04-23
Abstract: An unsaturated organic monomer is polymerized with an organometallic catalyst under anhydrous conditions and by a process wherein the stream of monomer, catalyst and optionally diluent passes through the polymerization zone under conditions of laminar flow.  Monomers specified are ethylene, propylene, butylene, styrene, vinyl toluene, dimethyl styrene, ethyl styrene, diethyl styrene, a -methyl styrene, butadiene, isoprene, dimethyl butadiene, and unspecified chlorine substituted derivatives of ethylenically unsaturated monomers; optionally preformed polymers may be present as described in Specification 821,971.  The catalysts disclosed are Alfin and Ziegler-type catalysts (with or without specified substrates) such as those disclosed in Specifications 873,656 and 873,657, and may be formed in situ.  If desired there may be included in the reactant stream metallating agents or ingredients which produce polar modified hydrocarbon polymers as specified in Specification 873,656, regulators as in Specification 873,659 modifiers such as mercaptans and organic halides, extenders, short-stop agents and/or antioxidants.  The apparatus described for effecting the polymerization under laminar flow comprises an elongated reaction tube (10ft. in length and 2 1/2 inches in diameter) and a pressure controlled discharge valve having a conical surface extending to a sharp apex extending well above the valve seat.  Build up of polymer on the walls of the reactor is effected not only by the laminar flow of the reactants, but also by the introduction of the optional ingredients into the polymerization zone itself, by the provision of coated or plated reactors, by ensuring that the polymer solution obtained is kept dilute, by the use of a vertical reactor and by the inclusion of oily extenders.  Subsequent to reaction catalyst may be deactivated with carbon dioxide.  Sheets of polymer are formed by the process described.
Patent GB-1208158-A (GB)
Title: A method of recovering tetraalkyllead
IPC: C07F7/24
Filed: 1968-03-18
Abstract: 1,208,158. Recovery of tetra alkyl lead from vent gases. ETHYL CORP. 18 March, 1968 [30 March, 1967; 24 Oct., 1967], No. 12942/68. Heading C2J. Tetra alkyl lead is recovered from vent gases by (a) contacting the vent gas with a precooled organic scrubbing liquid to produce a scrubbed gas phase and a contacted liquid phase; (b) passing contacted liquid phase to an organic liquid sump; (c) removing from said sump a part of the organic liquid therein, cooling it and recycling it for use in step (a); (d) recovering tetra alkyl lead in organic liquid from the sump. The vent gas may be scrubbed with aq. NaOH soln., having a concentration of 1-25% by wt., prior to step (a) and the liquid phase from the scrubbing being passed to the organic liquid sump. For large volumes of vent gas it is preferred to remove the major portion of R 4 Pb by treatment as above and then to contact the scrubbed gas phase from (a) with further precooled liquid to give a second scrubber gas and contacted liquid phases, the latter being passed to a second organic liquid sump. A part of the organic liquid from the second sump is subjected to step (c) above. Apparatus is described for carrying out the process (see Fig.) in which gas enters via line 10 to fume scrubber 11 where the gas is contacted with aq. NaOH to produce a scrubbed gas phase 14 and an aqueous liquid phase 15. Organic liquid 16 is removed via lines 17, 19 to a cooler 20 where it is cooled by brine to a temperature between -10‹ and 50‹ F. Cooled organic liquid enters tower 30 via line 3 where it is brought in contact with scrubbed gas 14 in a countercurrent manner. After contact the organic liquid returns to vessel 13 and settles in liquid 16. R 4 Pb and toluene recovered can be removed via line 35. By use of a weir 40 the organic liquid is retained in vessel 13 except for that removed to product recovery, and. aqueous liquid phase is permitted to overflow into sump 41 from whence it may be recycled to fume scrubber 11 or removed via line 45 and replaced by fresh NaOH via line 46. To prevent building of deposit in tower 30, NaOH is supplied through lines 6 and/or 7. Pure organic liquid is added via lines 66, 47, 48 in order to maintain a constant amount. For large volumes of gas a second contact stage may take place in tower 51 and sump 52 in a similar manner. The organic liquid is preferably ethylene dichloride or dibromide and is cooled sufficiently in step (c) to produce a scrubbed gas phase with a temperature of 30-60‹ F. Preferably the vent gas is initially at a temperature of 80-130‹ F. and the inert gas used is preferably nitrogen.
Patent GB-480064-A (GB)
Title: Improvements in and relating to machines for folding over the edges of sheet material
IPC: A43D8/40
Filed: 1937-05-06
Abstract: 480,064. Folding edges of sheet material. OUDKERK, H. May 6, 1937, No. 13009. Convention date, May 6, 1936. [Class 42 (i)] In a machine for folding over the edge: of textile goods &c the pressure flap 4 is first lowered on to the work, and ther the slides 8 are moved laterally to bend the edges of the work over the flap 4 by a single treadle 2, the move ments in the requirec order being permitted by a resilient connection 6 between the treadle and the flap 4 and by lost-motion connections 9 between the slides 8 and the treadle. The springs 6 and 11 return the treadle and slides to normal positions.
Patent GB-211050-A (GB)
Title: Improvements in theatre and like seats
IPC: A47C7/58
Filed: 1923-05-15
Abstract: 211,050. Abbott, L. van A., and Knebelkamp, W. F. May 15, 1923. Folding-seats: fixing furniture to floors.-A frame for theatre and like seats is of substantially Y-form, one limb forming a pillar adapted to be secured to a support and a hub portion is provided at the junction of the limbs to each side of which a seat-carrying arm is pivoted, one arm being appropriated to each of two adjacent seats in a row. Stops limit the movement of the arms. The pillar 20, Fig. 1, is secured to the riser C between two floor levels by bolts 22, 23 and has a boss 34, Fig. 5, on each side, about which seatcarrying arms 17 rotate. The hub portion is dished to receive raised portions 33 and stops 31, Fig. 4, on the arms, the stops 31 co-operating with stops 29, 30 on the hub to limit seatmovement. A bolt 35, with washers under its head and nut, holds the arms 17 on the bosses 34. The seats and backs are formed' of battens secured respectively between the arms 17 and extensions 10 of the adjacent frames.
Patent GB-216878-A (GB)
Title: Improvements in warp knitting machines and knitted fabric obtained thereby
IPC: D04B23/00
Filed: 1924-05-27
Abstract: 216,878. Philippe, J. E. May 31, 1923, [Convention date]. Warp machines.-A cylinder 1 with projections 3 arranged according to the pattern required is mounted on a bracket 7 through perforations in which pass the upper ends of a row of thread-carriers 4 so as to engage the projections 3 where present. The carriers 4 so engaging are drawn up against the tension of springs 8 so that the corresponding needles miss the threads carried thereby. There are at least two cylinders and the arrangement of the projections 3 is such that needles missing the threads of one bar take threads from another bar. Fig. 7 shows two bands of perforated paper 23 which pass over cylinders 13 provided as shown in Fig. 5 with radial plungers 15 which are projected through the perforations of the paper, by pneumatic or other means, so as to act on the carresponding thread-guides 4. In fine-gauge machines the odd-numbered guides may be controlled by an upper cylinder 13 and the even-numbered guides by a lower cylinder 13<a>. There may be additional guide-bars 30, 30<a> of ordinary description. The cylinders are driven intermittently by a chain 28 passing round a sprocket on the hub 21 of a toothed wheel 26 driven by an edge cam 27 on a vertical rotary shaft 25. The cam comprises two inclines 27<b> and 27<d> separated by two level portions 27<a> and 27<c>. The incline 27<b> effects the engagement of the pins 15 with the threadguides 4 while the incline 27<d> effects the corresponding disengagement. The warps are drawn from light beams 34 mounted on a shaft consisting of two concentric perforated tubes 35, 36. Pins 37 mounted radially in the outer tubes 36 provide braking pressure when air is admitted to the inner tube. Knitted fabrics. - By the use of the devices described above, there is produced, on a warp machine with two rows of needles, a double fabric the two plies of which are imperfectly interwoven or connected together. If one face has a red pattern on a black background the other face will have a similar pattern in black on a red background. The Specification as open to inspection under Sect. 91 (3) (a) states that the threads pass, as shown in Fig. 9 (Cancelled), over a thin rubber chamber 39 filled with liquid and resting in a gutter 40. The chamber is stated to have an equalizing or compensating action on the, threads. This subject-matter does not appear in the Specification as accepted.
Patent GB-972857-A (GB)
Title: Photographic shutter
IPC: G04F3/02
Filed: 1961-04-11
Abstract: 972, 857. Photographic shutters. AGFA A.G. April 11, 1961 [April 14, 1960], No. 13059/61. Heading G2A. In a shutter having a retarding mechanism including a pivoted lever arranged to act on a shutter driving member and pivotable to a variable extent into the path of the driving member during the running down of the shutter, the pivoted lever is arranged to transmit movement from the driving member to a pivoted balance mass so that, starting from the position of the lever for the slowest shutter speed setting in which it extends furthest into the path of the driving member; displacement of the lever out of said path causes the mechanical advantage between the lever and the balance mass to be progressively increased, whereby the resistance to movement of the lever is decreased. Preferably the arrangement is such that the mechanical advantage increases uniformly with the displacement of the lever and the shutter retarding mechanism is constructed so that, for equal successive movements of the shutter timing cam which may be continuous or have steps of approximately equal magnitude and controls the retarding mechanism, the corresponding shutter speeds selected are in geometrical progression. As shown, the invention is applied to a multiple pivoted blade shutter having a blade ring 3 driven through a triangular cam from a spring- powered master member 25 which is cocked and released as described in Specification 921,286, the nose 5 of a pivoted retard lever 6 engaging a control edge 4 of the master member and the tail 9 engaging a rotatable balance disc or flywheel 12, and the setting of the lever being controlled by a pin 15 on it engaging the stepped shutter speed setting cam 16. Thus as the shutter runs down the point of engagement between the lever and the balance mass moves so that its distance from the lever pivot 7 remains approximately constant while its distance from the flywheel pivot 13 increases. Instead of a sliding engagement between the flywheel and lever a pin and slot connection may be provided, and the master member may engage a pin on the retard lever. For adjustment in manufacture to obtain the desired retardation effect, the pivots 7, 13 of the retard lever and the flywheel and the pin 15 and if desired the pin engaged by the master member may be eccentrically mounted. If desired the flywheel may co-operate with a second retard device which can be put out of action by means of a second shutter speed setting control cam. Such an arrangement is described (Fig. 2 not shown) applied to a setting type shutter having separate spring-driven concentric blade rings as described in Specification 964,199, a second flywheel having a radial face engaging a pin on the flywheel engaging the retard lever. As alternatives, the second retard device may comprise an escapement wheel which may be concentric with, or formed on, the flywheel.
Patent GB-234485-A (GB)
Title: Process for the manufacture of aluminium fluoride
Filed: 1925-05-19
Abstract: Materials containing alumina and silica such as clays and bauxites are treated with aqueous hydrofluoric acid, the aluminous material being in excess, so that the aluminium silico-fluoride which is first formed will be decomposed with the formation of aluminium fluoride and silica.  In order to precipitate any silica remaining in the solution, a material containing alumina in a reactive form such as certain clays, or alumina itself may be added.  The purification is facilitated by boiling.  The precipitated silica has great absorption capacity and may be used for "binding bacteria," decolorizing liquids, and the like.ALSO:Materials containing alumina and silica such as clays and bauxites are treated with aqueous hydrofluoric acid, the aluminous material being in excess, so that the aluminium silicofluoride which is first formed will be decomposed with the formation of aluminium fluoride and silica.  In order to precipitate any silica remaining in the solution, a material containing alumina in a reactive form such as certain clays, or alumina itself may be added.  The purification is facilitated by boiling.  The precipitated silica has great absorption capacity and may be used for "binding bacteria," decolorizing liquids, and the like. Cryolite may be obtained by treating the aluminium fluoride solution with soda.
Patent GB-957131-A (GB)
Title: A crushing strength meter
IPC: G01N3/10
Filed: 1962-04-05
Abstract: 957,131. Testing crushing strength. STAMICARBON N.V. April 5,1962 [April 6, 1961], No. 13200/62. Addition to 927, 641. Heading G1S. Apparatus for measuring the crushing strength of successively fed samples of solid material (e.g. fuel briquettes) in accordance with Claim 1 of the parent Specification namely, in which a constant stroke reciprocating piston applies steadily increasing pressure the maximum value of which (occurring when the sample breaks) is recorded, is modified in that the recession movement of the piston 4 is initiated by the breaking of the sample whatever the position of the piston. Thus, with the pressing member 2 in contact with the test-piece 3, increasing pressure expands bellows 49 (before the expected maximum pressure is reached) to seal the escape nozzle 50 of a pneumatic line which then expands bellows 45 to clamp to arm 12 of the piston 4 a member 43 floating centrally between spring loaded switches 13 and 14 controlling the direction of piston movement. When the sample breaks, further slight downward movement of the piston takes with it the member 43 to operate switch 13 and initiate recession of the piston. Relaxation of the pressure unclamps member 43 but the arm 12 will engage the abutment 46 as the piston rises and thus operate switch 14 to reverse the piston movement for a further cycle of operations.
Patent GB-182988-A (GB)
Title: Improved treatment for obviating the rusting or oxidation of iron or steel surfaces
IPC: C23C22/12
Filed: 1921-05-10
Abstract: 182,988. Brunskill, W. B. May 10, 1921. Coating. - A rust-preventing coat.ing is deposited on iron or steel articles by immersing the articles in a boiling solution of monometallic zinc orthophosphate, prepared as described in Specification 169,884, in contact with metallic zinc, contact with iron being prevented. The coating consists mainly of metallic zinc, the formation of iron phosphate being minimized and, as far as possible, obviated. The iron or steel article may be suspended in the phosphate solution by a zinc strip or hook, and may be loosely enwrapped in the supporting device or may have zinc strips loosely twisted about it; or it may be carried in a perforated zinc tray or wire basket, or clipped to a perforated zinc plate. The solution is contained in a zinc or galvanized iron tank, and to the solution may be added sufficient finely-divided zinc to impregnate the whole solution when boiling. After treatment in the tank, the article is washed to remove any loose deposit of iron phosphate, and allowed to dry.
Patent GB-1243452-A (GB)
Title: Riding saddle
IPC: B68C1/14
Filed: 1969-03-13
Abstract: 1,243,452. Riding saddle. W. J. K. STUBBEN and A. STUBBEN [trading as JOH'S STUBBEN O.H.G.]. 13 March, 1969 [13 March, 1968; 7 Aug, 1968], No. 13246/69. Heading A1M. [Also in Division E2] A riding saddle having two girth straps adjustable by the rider from the saddle comprises a saddle tree 11 with bars 12 and webs 13, and four girth buckles 16, 19 are attached midway along the bars 12 and on the forward (i.e. nearest the horse's head) web 13 or downward extension thereof. Saddle bags 22 extend just below level of the buckles 16 and cover a saddle pad 24 which has a shaped knee roll 25, the web girth straps 17 going under the pad through holes 26a, 26b, the bar girth strap 18 going over it. Straps 17, 18 meet under the horse's belly where a felt pad may be provided. Buckles 16, 19 clamp the girth straps 17, 18 in any position since straps 17, 18, after going round pivoted roller 38 are clamped between the pressure plate 39 and the eccentric portion of a spring-loaded lever actuated bar 45. Frame 31 has a slotted bore for attaching to a plate 36 on the tree 11 having a suspension pin 34 and toggle 35. In a further embodiment the forward buckles 16 may be dispensed with and the straps 17 attached by rivets or screws.
Patent GB-874619-A (GB)
Title: Improvements in or relating to sliding clasp fasteners
IPC: A44B19/40
Filed: 1958-04-25
Abstract: 874,619. Sliding clasp fasteners. HANSEN H. April 25, 1958 [April 30, 1957], No. 13262/58' Class 44. A row of fastening elements for a sliding clasp fastener formed as an integral part of a continuous filament 1 is constituted by a series of mutually spaced portions 2, 3, 4 &c. of the filament extending through a plane containing a series of aligned straight intermediate portions 5a, 6a, 7a &c. of the filament alternating with the fastening elements, successive intermediate portions being connected by means of further portions 5b, 6b, 7b &c. of the filament, with the ends of two successive fastening elements on one side of the plane and with the ends of two successive fastening elements on the other side of the plane. The elements which in a modification may be circular in cross-section, are attached to a tape by stitching, Figs. 4-6 (not shown). Specification 838,310 is referred to.