baber/WOPTO huggingface dataset:
Patent GB-489734-A (GB)
Title: Improvements in circular saw machines
IPC: B27B5/24
Filed: 1937-02-05
Abstract: 489,734. Circular-saw machines. WALKER-TURNER CO., Inc. Feb. 5, 1937 No. 3480. Convention date, Nov. 28, 1936. [Class 145 (ii)] In a circular-saw machine in which the saw operates through a slot in the work-table, means are provided for adjusting the relative disposition of the plane of the saw and the plane of the work-table by effecting relative displacement of the saw and work-table in the direction of the axis of the saw, and also angularly around an axis perpendicular to this axis, without altering the relative disposition of the saw and its prime mover. The saw and its prime mover may, as in the machine shown, be capable of adjustment laterally in the direction of the axis of the saw, and also angularly about an axis perpendicular to this axis, to enable the plane of the saw to be aligned with respect to the sides of the slot in which it operates. The machine shown comprises a motor 1M carrying a housing 35 in which is mounted, parallel to and above the motor shaft, the spindle of the saw S, together with gears connecting the spindle and shaft. The motor is supported on a table f extending laterally from a frame F, this frame being slidably mounted on a bracket T to allow vertical adjustment of the saw. For this purpose, the frame F comprises parallel rods 28, 29, Fig. 3, sliding in bearings 30, 31 in the bracket T, the adjustment being effected by rotation of a screwed shaft 47, through worm gearing, from a hand wheel 42. To effect tilting of the saw, the bracket T carrying the frame is carried by trunnions 22, 23 provided on the underside of the table, these trunnions having tapered arcuate guide surfaces 24, 25 engaging similar bearing surfaces 26, 27 on the top of the bracket. The angle of tilt is adjusted by rotation of a screwed shaft 52 passing through a bearing pivotally mounted at 55 on the machine frame, and through a nut 53 pivoted on the bracket T. To adjust the saw in relation to the slot in the table through which it passes, the bolts securing the motor M to the table f pass through relatively perpendicular slots 38, 39 in the table and motor footing, and adjusting screws 40, 41 are provided. The saw may thus be adjusted axially of, or perpendicularly to, its shaft, or angularly about a vertical axis. A combined guard and dust-shoot 62 carried by the motor frame F encloses the lower part of the edge of the saw, and may carry a connection 63 for a suction hose. An upper. guard 64 is carried by an arm 65 pivoted on a member 64a forming a riving-knife adjustably secured at 66 to the bracket T. Both guards therefore move with the saw when it is tilted.
Patent GB-1381904-A (GB)
Title: Multi-stage two section centrifugal compressor
IPC: F04D29/42
Filed: 1972-01-25
Abstract: 1381904 Centrifugal compressors CARRIER CORP 25 Jan 1972 [13 July 1971] 3488/72 Heading F1C A multi-stage two section centrifugal compressor comprises a casing 10 having end covers 15, 16 and formed with a cross-over passage 60 extending between the discharge of the last stage of the first section and the suction port of the first stage of the second section. A second, seal equalizing passage 67 is provided in the casing wall and extends between an annular chamber 63 defined by a diaphragm 50 and other means (which is end cover 15 in the embodiment shown), and the suction port of the first impeller of the first section. Gas leaking through labyrinth seal 64 provided between diaphragm 15 and the shaft 13 is returned to the compressor inlet via chamber 63 and passages 70, 67. A plurality of cross-over passages and seal equalizing passages may be provided and the latter may be formed by placing tubes in a mould and casting the casing about them. A barrel 11 having inlet and outlet passages 23 and 57 respectively surrounds the casing. The shaft is journalled in bearings mounted in the bearing housing 14 at one end and bearings supported by end cover 16, which is integrally formed with the barrel 11, at the other end.
Patent GB-251701-A (GB)
Title: Improvements in or relating to three electrode valves
IPC: H03B9/02
Filed: 1925-02-07
Abstract: 251,701. Marconi's Wireless Telegraph Co., Ltd., and Gill, E. W. B. Feb. 7, 1925. Vacuum tubes.-Negative resistance effects in a grid circuit are obtained by a triode con structed so that the maximum plate current under any poten tials on grid and plate is always less than the maximum cathode emission under these conditions, and having its grid and anode maintained at positive potentials such that an increase of cathode emission beyond a critical value produces a disproportionate increase in the grid current, and a corresponding decrease in the plate current. As this critical point occurs at higher values of the cathode emission when the grid voltage is increased, if the emission is constant an increase of grid voltage produces a decrease of grid current over a certain range. A cylindrical plate electrode should have more than 2¢, say 3 to 5 times, the diameter of the grid. When the electrodes are flat, the distance between plate and grid should exceed that between grid and filament. If the plate potential is +8 volts, that of the grid may be +30 to 45 volts. If a tuned circuit 4, 5 is connected to the grid, and the potentials adjusted to obtain the negative resistance effect, oscillations of high or low frequency may be generated, independently of any reactive coupling between the plate and grid circuits. If the grid potential be kept constant and the plate potential varied, a range can be found in which the curve showing the relation of plate voltage to grid current has a very steep portion, giving high amplification. This can be used to produce oscillations by reaction, the oscillating circuit being in the grid lead.
Patent GB-1285833-A (GB)
Title: Sheet metal container
Inventor: RAGETTLI CHRISTIAN
IPC: B65D8/12
Filed: 1970-01-26
Abstract: 1285833 Jointing by stamping VAN LEER (UK) Ltd 26 Jan 1970 3580/70 Heading B3Q [Also in Division B8] A sheet metal end closure, comprising a central flat portion 8, a radially-corrugated frustoconical portion 9 and a cylindrical rim 5 having a down-turned edge 6, is permanently secured to a sheet-metal container body 1, having an enlarged cylindrical rim 2 joined to the main body of the container by a frusto-conical shoulder 4, by seating the end closure on the shoulder and applying downward pressure on the closure central flat portion until the central flat portion is slightly below the horizontal plane through the lower edge of the container body rim. The rims 2 and 5 are deformed to frusto-conical shape by the radial expansion of the closure, Fig. 7 (not shown). A sealing ring 7 is provided in the channel defined by the down-turned edge 6. Additionally or alternatively, a band having glue layers on opposite sides may be disposed between the rims 2 and 5, Fig. 9 (not shown). The cylindrical surfaces of the rims 2 and 5 may be initially roughened by sand-blasting and the flat portion may be provided a closable opening. In a modification, Fig. 8 (not shown), the central flat portion of the closure is recessed to define a clearly defined contact surface for a pressing tool.
Patent GB-964317-A (GB)
Title: Improvements in and relating to cotter pins
IPC: F16B21/12
Filed: 1960-02-02
Abstract: 964,317. Spring upholstery. E. A. PARSONS. Feb. 2, 1961 [Feb. 2, 1960], No. 3603/60. Heading A4M. [Also in Division F2] A spring 19 is secured to a seat member 18 by a split-pin cotter (see Division F2) with a looped head set obliquely to its shank (which may be bowed) so that the head is perpendicular to the member face with the cotter shank is driven into an obliquely drilled hole. Specification 964,316 is referred to.
Patent GB-1338333-A (GB)
Title: Tool heads for use in machining timber
IPC: B27L11/00
Filed: 1972-01-26
Abstract: 1338333 Rotary woodworking tool K LINCK 26 Jan 1972 [27 Nov 1971] 3661/72 Heading B5L A rotary tool head for forming a flat surface on a trunk comprises chipping blades 11 arranged on the periphery of the tool head for cutting side segments of the trunk into shavings as the trunk is moved past the tool head in a direction perpendicular to its rotational axis. A tool holder 15, Figs. 1 and 2, is rotatably mounted coaxially of the tool head and is arranged to be driven at a higher rotational speed than the tool head, the tool holder having finishing blades 1-6, 1<SP>1</SP>-6<SP>1</SP> and 1<SP>11</SP>-6<SP>11</SP> in the region of its periphery for smoothing an even surface 18, Fig. 2, produced by the tool head. As described a pair of tool heads is arranged coaxially to form flat surfaces 18, Fig. 2, on opposite sides of a trunk. The blades 1-6 of each set are stepped axially of the tool head and may be axially and/or radially adjustable. The finishing blades may be arranged to cut the trunk slightly ahead of the blades 11. In a second embodiment, Fig. 4, the finishing blades are constituted by the teeth of an annular saw 24 bolted to a tool holder 25.
Patent GB-1487982-A (GB)
Title: Remote power control apparatus
IPC: H04N5/00
Filed: 1975-01-28
Abstract: 1487982 Remote control of receivers SONY CORP 28 Jan 1975 [29 Jan 1974] 3697/75 Heading H3Q In a remote power control apparatus having a remote control signal processor which includes a switch 7 controlled by a circuit 6 in response to signals from a remote control signal receiver 3 so as to connect the apparatus to an external power source at 1 a battery 5 is connectible to supply an operating voltage to the remote control signal processor 3, 4, 6, a power supply circuit 10, 11 has an input section connected by the switch 7 to be energized from the external power supply and a rectifier section connected to supply an operating voltage to the signal processor when the switch is on and an electronic apparatus 15 is connected to be energized from the external power supply through the switch 7 when the switch is on. When a remote control signal is received by a receiver 3, a control signal generating circuit 4 produces a pulse to switch over the state of a bi-stable circuit 6 which energizes a relay 9 so as to connect power supply switch 7 to turn on the electronic apparatus 15. The A.C. supply from 1 is also supplied via rectifier 11 to recharge the battery 5. The next remote control signal received at 3 causes the bi-stable circuit 6 to switch to the other state to de-energize the relay 9 and disconnect the power supply switch 7. The introduction of the Specification gives a television receiver as an example of the electronic apparatus.
Patent GB-887980-A (GB)
Title: An improved powder dispenser
Inventor: D LEMOS RICHARD FRANK
IPC: B65D25/38
Filed: 1959-02-03
Abstract: 887,980. Powder distributers. BETTS & CO. Ltd. Feb. 2, 1960 [Feb. 3, 1959], No. 3741/59. Class 18. A powder dispenser has a rigid tubular body closed at one end by a plug 5 and has a shoulder portion 2 at the other end integral with which or secured to which is a nozzle 3 having perforations 4. The nozzle may be closed by a push-on or screw-on cap.
Patent GB-555675-A (GB)
Title: Improvements in needles or reproducing points for use with gramophone tracks or the like
IPC: G11B3/00
Filed: 1942-03-21
Abstract: 555,675. Gramophone needles ; grinding. VOIGHT, P. G. A. H. March 21, 1942, No. 3788. [Class 40 (ii)] [Also in Group XXIII] The point of a sound-reproducing gramophone needle is made of the shape of an inverted pyramid with rounded contacting edges as shown by the thick lines of the cross-sections shown. The section of the pyramid may be a square but is preferably a rhombus as shown. The two pairs of edges may be rounded as shown, in which case the needle may be turned to make use of either of these pairs of edges as contacting edges against' the side of the record grooves. The needle may be manufactured by first grinding four faces to the shape of a pyramid, then rounding and-polishing. If the material has a crystalline structure having different hardness in different directions, the first grinding may be a conical one, which due to the different hardness in different directions would produce a distorted cone. The 'distortion could then be increased by further localized grinding. Another possible procedure is to grind the working outline first and then round off and shape the other parts of the surface.
Patent GB-138437-A (GB)
Title: Improvements in exhaust silencers for internal combustion engines
IPC: F01N1/12
Filed: 1919-02-17
Abstract: 138,437. Robinson, G. A., and McNeill, R., (trading as Robinson & McNeill). Feb. 17, 1919. Exhaust-silencers. - In a silencer comprising a central inlet chamber D and a scroll E formed from a single sheet of metal, the space between the convolutions of the scroll constantly increases in area outwardly. The scroll is enclosed in a cylindrical chamber A, and the gases escape through a perforated tube F. The scroll E and tube F engage grooves or ribs on a pair of end plates connected by bolts C, and the outer end i of the scroll is bent around one of the bolts. The inlet chamber D and the outlet tube F may be arranged symmetrically on either side of the axis of the cylinder A.
Patent GB-1378748-A (GB)
Title: Powder entraining apparatus
IPC: B05B7/14
Filed: 1972-03-03
Abstract: 1378748 Pneumatic conveyers UNITED KINGDOM ATOMIC ENERGY AUTHORITY 3 March 1972 [4 Feb 1971] 3880/71 Heading B8A Apparatus for containing powder in a gas stream comprises a hopper 1 for the powder with a discharge orifice 5 located adjacent the upper surface of a disc 7 with a plurality of slot-shaped recesses 9 formed therein to receive the powder. The base of the recesses are closed by a gauge 105 which is penetrable by a gas but impenetrable by the powder. The disc 7 rotates in a sealed chamber fed with pressurized gas from a nozzle 11 and having a discharge pipe 113 located diametrically opposite the orific 5 and adjacent the upper surface of the disc 7 to receive powder entrained in the gas passing through the gauge. The recesses 9 or the slot 12 in the pipe 113 may be inclined to the radial direction whereby two recesses 9 at any one time are being discharged to produce a continuous flow of powder. The speed of rotation of the disc 7 controls the amount of powder discharged. A stirrer 3 is provided in the hopper. In an alternative embodiment, Fig. 4 (not shown), a hollow drum (57) with recesses (59) is located adjacent a discharge orifice (55) of a hopper (51). The interior of the drum (57) is pressurized by gas supplied through a hollow spindle (86), upon which the drum rotates, to discharge the powder in the recesses into a pipe (87). The entrained powder may be fed to a spray gun.
Patent GB-1357695-A (GB)
Title: Break- or open-end spinning machines
IPC: D01H4/10
Filed: 1972-01-27
Abstract: 1357695 Open end spindles WILHELM STAHLECKER GmbH 27 Jan 1972 [27 Jan 1971] 3896/72 Heading DID [Also in Division F1] In an open end spinning machine in which the rotor 1 operates under vacuum in a chamber 2 the rotor shaft 7 passes with clearance through the rear wall 11 of the chamber and a part is provided which rotates with the shaft to promote an outward air flow in the region at which the shaft passes through the chamber wall. The outward air flow may be promoted by centrifugal effects of frictionally entrained air, i.e. by the disc 13 of Fig. 1 or the cone 29 of Fig. 10. Alternatively a fan may be employed either integrally with the rotor, Fig. 29, separately mounted on the shaft, Fig. 23, mounted on extensions of bearing rollers, Fig. 15, or integral with such rollers, Fig. 21. Also a spiral fan blade 18 may be additionally or alternatively mounted on the shaft 7, Fig: 15. The fan may be mounted inside or outside the spring chamber, Figs. 23 and 21 or flush with the rear wall 11, Figs. 15 and 29. The rotor shaft 7 may be mounted for rotation in the nip of rollers, Figs. 15 and 21. (For Figures see next page)
Patent GB-1388261-A (GB)
Title: Coated cemented carbide products
IPC: B23P15/28
Filed: 1973-01-25
Abstract: 1388261 Coating cemented carbides GENERAL ELECTRIC CO 25 Jan 1973 [11 Feb 1972] 3934/73 Heading C7F A cemented carbide (Fe, Ni or Co matrix), e.g. WC in a Co matrix or Ti C in a Ni matrix is coated with a carbonitride of Hf and/or Zr, the x-ray diffraction lattice parameter being 4.570 to 4.360  for Hf and Hf-Zr carbonitrides and 4.600 to 4.620  for Zr carbonitride. The coating may be applied by decomposing a mixture of Hf or Zr tetrachloride, methane, or carbon tetrachloride, hydrogen, and nitrogen. The coating may also include Ti, Ta or Nb.
Patent GB-565947-A (GB)
Title: Improvements in or relating to constructional toys
IPC: A63H33/10
Filed: 1944-09-25
Abstract: 565,947. Toys. NISSEL, G. Sept. 25, 1944, No. 3943/43. [Class 132 (iii)] [Also in Group XXVIII] A toy constructional set comprises a plurality of tubular elements which may be screwthreaded internally and/or externally and which are provided with or are adapted to engage with sleeve or cup-like members 1, which permit of the interconnection of the various elements used in building up the structure, each cup-like member having a perforated end wall 4 through which can pass the shank of a connector piece, Figs. 2, 3, 5, having a head 5b or 6 which abuts against the inner surface of said end wall, said connector piece being capable of free rotation within the sleeve or of being held rigid therein by pressure from the tubular element engaged in the open end of said cup-like member. The set comprises angle joints, T-joints, cross-over joints, Fig. 12, plates with tubular sides 11, Fig. 7, straight and curved tubes and slotted tubes. These parts are assembled to make a swing, Fig. 19, the connections being shown at B and D.
Patent GB-886261-A (GB)
Title: Variable reluctance converter
IPC: H03M1/00
Filed: 1960-02-04
Abstract: 886,261. Electric selective signalling systems. GENERAL PRECISION Inc. Feb. 4, 1960 [Feb. 5, 1959], No. 3992/60. Class 40 (1). In a shaft digitizer raised portions on a coded scale are sensed by a variable reluctance head. Each track on the scale is sensed by a head 51, Fig. 2, having a sensing finger 37. The head is so shaped that a magnetic flux path is provided around the opening 99 and through the scale 10 and this loop either includes a small air-gap if the sensing finger is over a raised portion or a large air-gap if the sensing finger is not over a raised portion, and thus the reluctance of the head, and hence the inductance of a coil on the sensing finger, varies in accordance with the relative position of the scale and the head. The change in inductance is measured by applying a constant A.C. potential to the coil and measuring the resulting voltage across it. To remove " noise " one head is used to sense an all-raised track and its signal is subtracted from the signals of other heads (Fig. 8, not shown).
Patent GB-1207041-A (GB)
Title: Process for the improvement of the anti-friction properties of machine parts
IPC: C23C22/80
Filed: 1968-01-26
Abstract: 1,207,041. Phosphorizing; pickling. GERHARD COLLARDIN G.m.b.H. Jan. 26, 1968 [Jan. 27, 1967], No.4077/68. Headings C7E and C7U. Antifriction Mn phosphate coatings are applied to metal surfaces by treating the degreased surfaces with, in order:- a) A hydrochloric or sulphuric acid solution, containing a wetting agent and a pickling inhibitor which reduces attack of the acid on portions of the surface not affected by scale or rust, with a pH below 1À2 and a temperature of or below 70‹ C., b) Water, water-petroleum emulsion or a solution of Ti, Zr or Li salts or pH 7-10, c) An acid phosphating solution comprising Mn<2*> ions, PO4<3-> ions and an accelerator or accelerators. Subsequently the surfaces may be treated with dilute solutions of chromic acid or chromates and/or phosphoric acid. Suitable pickling inhibitors are dibenzyl, sulphonide and hexamethylenetetramine, while the wetting agent may be a product of the addition of ethylene oxide to propylene glycol. Accelerators which may be used in the phosphorizing solution include nitrates, peroxides and Ni, Co and Cu salts.
Patent GB-690230-A (GB)
Title: Improvements in and relating to rectilinear ball-bearings
IPC: F16C29/04
Filed: 1950-02-17
Abstract: 690,230. Rectilinear-motion bearings. DEX. TER & CO. (HIGH WYCOMBE), Ltd., and McVEY, G. March 29, 1951 [Feb. 17, 1950], No. 4195/50. Class 12 (i). In a rectilinear ball bearing having V-tracks for the balls, the sides of each V-track comprise members 8, 9 separated substantially at the bisector plane of the V by shims 10 or spacers of metal or the like. Two such bearings support a member 11 upon a base 5, the inner tracks 1 being bolted to the base 5 by bolts 6, and the outer tracks 7 being bolted to the member 11 by bolts 12, 14. The bolts 14 have clearance with respect to the holes in the associated members 8, 9 and shims 10, so that before tightening them, the correct contact pressure of the bearings is ensured by springs 17 located in tapped holes in a flange 15 of the member 11. The springs are compressed by bolts 16, and after assembly may be removed. Bolts 21 in the flange 15 are provided to prevent undue strain on the studs 14. The members 8, 9 may comprise continuous strips, or a plurality of metal blocks arranged end to end so that the abutting ends of the blocks of either run are staggered relatively to the blocks of the other run. The blocks and shims may be secured together by dowel pins. Specification 666,543 is referred to.
Patent GB-1404272-A (GB)
Title: Transportable framework structure for a mobile heating plant
IPC: F16M5/00
Filed: 1973-01-29
Abstract: 1404272 Freight containers MAGYAR HAJO-ES DARUGYAR 29 Jan 1973 [1 Feb 1972] 4369/73 Heading B8P [Also in Division F4] In a frame structure for transporting and projecting a mobile heating plant capable of being erected in the ready-assembled state, the plant includes a steam boiler 14 connected feed water preparation and auxiliary equipment 15, a feed water pump, circulating and pressure feed pumps 19, 20 respectively, a water tank 16, a burner device 17 and a control cabinet as well as the pipe lines for continuous heat generation together with fittings provided with appropriate connections to the outside of the structure. The frame structure comprises a base frame 1, connected as a rigid quadrilateral, transverse base beams 6, 7 rigidly connected to the base frame and to forward and rear supporting members 2 and 3 for the boiler, the connection of the rear supporting member allowing relative movement under the action of heat between the rear supporting member 3 and the associated transverse beam 7. The two transverse beams serve to strengthen the base frame 1 and to carry the water tank 16 and feed water preparation plant 15. Vertical lateral supports 8 are rigidly connected to the base frame and a substantially rectangular rigid roof frame 10 is provided with transverse roof trusses 21 rigidly connected to the vertical side supports and is of the same general shape as the base frame. The base frame comprises a Z-section, a box-section and an L-section. The transverse beams include box-section struts and C-section beams. Openings are formed in the corners 11 of the roof frame 10 for connecting and securing gripping and lifting devices thereto.