baber/WOPTO huggingface dataset:
Patent GB-957497-A (GB)
Title: Regulating mechanism for a sewing machine
IPC: D05B27/22
Filed: 1963-02-27
Abstract: 957,497. Sewing machines. MEFINA S. A. Feb. 27; 1963 [March 7, 1962],No. 7818/63. Heading D1G. In a sewing machine a control knob is fixed to a rotary shaft carrying a cam, part of the profile of which co-operates with a first follower adapted to actuate a lever for varying the angular position of a feed-control shaft, the feed being thereby manually controllable, and another part of the profile of which co-operates with a second follower carried at one end of a support lever, whereby a follower carried at one end of a return lever, pivoted to the support lever, is engaged with a rotary cam, the other end of the return lever being pivoted to a slide carried by the feed-control shaft, the feed thereby being automatically controlled, and the part of the cam profile acting on said second follower being so inclined as to permit of adjustment of the angular position of the knob corresponding to automatic control. A feed-control shaft 1 is biased by a spring to urge a follow 10, carried by a lever 3 pivoted on shaft 1, towards cam 14 on a shaft 15 rotatable by means of a control knob 16. A spring 6, having one end engaged with a pin 8 projecting radially from shaft 1 and the other end engaged with lever 3, also biases follower 10 towards cam 14. The profile of the latter has four sections I, II, III and IV. Section I controls the reverse feed from stitch lengths zero to minus 4. Section II controls the forward feed from stitch lengths zero to plus 1. Section III controls the forward feed from stitch lengths plus 1 to plus 4. A support lever 25, pivoted at one end at 27 to the machine frame 2, is biased by a spring 43 to engage a follower 29, carried at the other end of lever 25, with cam 14. A return lever 20 carries at one end a follower 19, is pivoted intermediately at 24 to lever 25, and is pivoted at its other end at 21 to a block 22 slidable in a guideway 23 carried by shaft 1. The arrangement is such that when follower 29 engages Section IV of cam 14, follower 10 is disengaged from the latter and follower 19 is engaged with a rotating cam 18 to effect automatic control of the feed. Section IV is inclined in order to accommodate variations in the profile of cam 18. A lever 34, pivoted at 35 to the machine frame, carries a lug 37 engaged with pin 6, whereby, when lever 34 is turned by pressure on a lug 33 thereon during forward stitching, shaft 1 is rotated till a lug 39 to lever 34 engages a cam 41 on shaft 15 to establish reverse feed of the same magnitude as the forward feed. When follower 29 engages section IV of cam 14 for automatically-controlled feed, a portion of cam 41 engages lug 39 to shift lug 37 clear of pin 8. Specifications 683,370 and 683,380 are referred to.
Patent GB-609413-A (GB)
Title: Expeller for chucks in machines
IPC: B23B13/12
Filed: 1946-03-13
Abstract: 609,413. Chucks. KOCHER, O. March 13, 1946, No. 7855. Convention date, March 16, 1945. [Class 83 (iii)] An ejector for a chuck 4 is provided with gripping jaws 24 which are held on a bearing sleeve 19 by annular springs 25 and which are forced outwardly against the bore of the chuck by balls 22 lying in recesses 23 in the bearing sleeve, the balls themselves being forced outwardly by the displacement of a conical sleeve within the bearing sleeve. The ejector head 8 is mounted on a rod 8<SP>1</SP> whose travel is limited forwardly by a nut 17 and rearwardly by a stop nut 16. In operation, a sleeve 15, which is'formed with a conical surface 20, is screwed inwards while the bearing 19 is prevented'from rotating, thus forcing 'the balls 22 outwardly against the jaws 24 and locking the expeller in the chuck.
Patent GB-797498-A (GB)
Title: Welding composition for hard facing
IPC: B23K35/362
Filed: 1957-03-11
Abstract: A comminuted welding composition for use in depositing a hard metal facing by submerged arc welding with an alloy or carbon steel electrode comprises 8-12 per cent ferrochromium, 2-4 per cent ferromanganese, 0-8 per cent fluorspar, 23-27 per cent magnesia, 21-25 per cent alumina, 0-5 per cent lime, 0-3 per cent oxide (FeO), 0-3 per cent chromic oxide the balance being silica. Examples of steel facings so produced contain:- .carbon.0.38.0.43.0.49.0.27 .manganese.0.52.0.67.0.74.0.62 .silicon.0.65.0.70.0.63.0.66 .chromium.1.69.2.05.2.79.1.58
Patent GB-767837-A (GB)
Title: Underwater breathing apparatus
Inventor: MERCER GEORGE KENNETH
IPC: B63C11/22
Filed: 1954-03-19
Abstract: 767,837. Underwater breathing apparatus. DUNLOP RUBBER CO.. Ltd. March 17, 1955 [March 19, 1954], No. 7998/54. Class 81(2) Underwater breathing equipment is provided with a gas exhaustion indicator which gives a visual indication to the user, preferably by causing a stream of bubbles to pass up in front of his face. Two air bottles 1, 2 communicate with each other through a duct 4 and with a reservoir compartment 19 and the pressure, passing through a clearance in a wall 10, bears against a piston 21 and drives it towards the right so as to cause orifices 13, 26, in a stationary sleeve 12 and hollow valve stem 22 respectively, to move out of alignment and to seal the piston 21 against a seating 30. When the apparatus is required for use, a hand 'wheel 38 is screwed inwards so as to compress a spring 36 and push a plunger 29 and piston 21, together with a sleeve 14, towards the left until air may pass through the aligned apertures 13, 26 into the interior of the valve stem 22 and thence to the demand valve through connection 9. Normally, as the pressure in the delivery conduit rises, it drives the plunger 29 against pressure of the spring 36 until a balance is obtained and, at the same time, the excess thrust on the left side of the piston 21, due to its larger area, prevents escape between the seating 23 and washer 30. At the same time the piston 21 moves with the spring and orifices 13, 26 move out of alignment to seal the delivery duct until the pressure therein drops, due to consumption of air. If the pressure should become excessive, owing to leakage of this valve, however, movement of the piston 21 is arrested by a fixed stop 25 and the plunger 29 is lifted off its seating, thereby serving as a relief valve. The pressure in the supply bottles, acting on a plunger 42, normally holds this plunger down on a seating member 40, but, when the pressure reaches a low level, a spring 43 lifts the plunger and allows air to pass through a duct 50 to a tube (not shown), terminating in a nozzle set on the user's mouthpiece, where it issues as a warning stream of bubbles. Specification 757,732 is referred to.
Patent GB-745149-A (GB)
Title: Thermoplastic compositions
Inventor: SAUL WALTER
IPC: C08L45/02
Filed: 1953-03-24
Abstract: A thermoplastic composition suitable for making sheets or tiles comprises a filler forming from 76 to 50 per cent by weight of the total dispersed in a binder which correspondingly forms 24 to 50 per cent by weight of the total and which contains a polyvinyl resin, particularly polyvinyl chloride or a copolymer of vinyl chloride with vinylidene chloride or vinyl acetate, in a proportion of from 10 to 30 per cent by weight of the total composition, a plasticizer for the resin and a blown vegetable oil.  The filler may be asbestos or powdered limestone, the plasticizer may be tricresyl or trixylenyl phosphate or dibutyl phthalate and the vegetable oil may be castor, cottonseed, linseed or tung oil.  The binder may also contain a coumarone resin melting between 70 DEG  and 150 DEG  C., a hydrocarbon-formaldehyde resin such as a naphthalene-formaldehyde resin, or an ester or metal salt of rosin.  Pigments such as red iron oxide and cobalt driers may also be incorporated.
Patent GB-253246-A (GB)
Title: A new product for rendering joints steam-tight or fluid-tight
IPC: F16J15/14
Filed: 1925-03-25
Abstract: 253,246. Soler, R. G. March 25, 1925. Joint-making packing.-A packing composition comprises gum lac, powdered white lead, and a solvent, such as alcohol. Graphite and colouring matter may be added.
Patent GB-1272303-A (GB)
Title: Oscillographs
Inventor: HABERLAND WOLFRAM
IPC: G01R13/34
Filed: 1969-04-14
Abstract: 1,272,303. Cathode-ray tube circuits. FUNKWERK ERFURT VEB. 14 Feb., 1969, No. 8117/69. Heading H4T.  In a sampling oscilloscope in which a recurrent H.F. waveform is sampled at a lower frequency to provide samples for application to the oscilloscope, frequency distortion of the samples (due to the finite width of the sampling period) is reduced by means of a correction circuit. The distortion is stated to consist of an increasing attenuation of the harmonics in the spectrum of the samples with increasing frequency of the recurrent H.F. waveform and the characteristics of the correction circuit which comprises a highpass filter are determined, when the apparatus is calibrated, from a comparison of the spectrum of the H.F. waveform with the spectrum of the waveform produced by the sampling process the latter spectrum being transposed to the equivalent position on the time scale of the H.F. waveform. Fig. 1, shows one embodiment in which the recurrent H.F. waveform is sampled by means of a switching device 1 which supplies samples to a capacitor 2 and thence via a L.P. filter 3 to the frequency-distortion correction network 4. In alternative arrangements the L.P. filter 3 may be omitted (Fig. 2, not shown), or the capacitor 2 may be omitted (Fig. 3, not shown) or the capacitor 2 may be omitted and the L.F. filter 3 combined with the frequencydistortion correction network 4 to provide a composite unit 5 (Fig. 4, not shown). The invention is stated to allow an increase by a factor of two or three of the upper limit frequency of the recurrent waveform as compared with known arrangements.
Patent GB-557733-A (GB)
Title: Improvements in means for determining the movement of relatively movable parts of mechanism and locking the movable part or parts in a predetermined position or positions
IPC: G05G5/02
Filed: 1942-06-15
Abstract: 557,733. Latches. WYCLIFFE FOUNDRY CO., Ltd., and BARRETT, G. June 15, 1942, No. 8186. [Class 44] [Also in Groups XXIV and XXXVII] In devices for looking levers &c. of the kind in which, e.g. the lever carries a bolt adapted to enter notches in a fixed quadrant, the bolt is made in sections which are so controlled as to enter a notch in succession so as ultimately to fill the notch and lock the lever. The invention ensures that the bolt will not slip past a notch, particularly in small movements of the lever, and is applicable to gear-changing as described in Specification 529,506, [Group XXIV], and to moving a lever over a series of contacts in electrical controlling mechanism. The part to be moved is actuated by a lever 4, Fig. 1, secured to a spindle 5 having an operating handle 7 on which is slidably mounted a bolt divided vertically into sections 1a, 1b, Fig. 4, loaded by springs 8a, 8b. In these sections is formed a recess 15 adapted to be engaged, when the sections are retracted, by a stop 9 loaded by a spring 14 and slidable on an extension 13 of a spring-loaded plunger 11 adapted to engage countersinks 16 in the cover 6. The outer ends of the sections are bevelled to facilitate engagement with notches 2a &c. in a quadrant 3. To shift the handle the sections 1a, 1b are withdrawn, e.g. by pulling on pins 1c until the stop 9 drops into the recess 15. On moving the handle the countersink 16 cams the coned end of plunger 11 upwardly and moves the stop out of the recess whereupon the sections 1a, 1b are forced against the quadrant until they arrive at the next notch which they enter in succession, e.g. as shown in Fig. 22. The bevelled end of the sections ensures that the section which reaches a notch commences to enter that notch immediately. In a modification, Figs. 8, 12, the sections are held in the retracted position by spring-loaded detents 17a mounted on the handle 7 and raised by cam portions 19 between adjacent notches 2a, 2c. The detents replace the stop 9 and the cams replace the countersinks 16. Instead of retracting the sections by gripping the pins 1c thereon, they may be retracted by rods 25a, Fig. 13, actuated by a grip 23 on the handle, the rods being formed with detents 26a extensions of which ride over cam portions 19 as before. When the grip is released, the detents return to the normal position (dotted lines) ready to retract the sections again. Instead of the bolt being divided in a vertical plane, it may be divided in a horizontal plane particularly where the bolt is small in relation to the load it has to arrest. The bolt may be divided into more than two sections.
Patent GB-564253-A (GB)
Title: Improvements in or connected with telescope optical systems
IPC: G02B23/08
Filed: 1941-06-30
Abstract: 564,253. Optical systems. BARR & STROUD, Ltd., and STRANG, J. M. June 30, 1941, No. 8187. [Class 97 (i)] An optical system producing a parallel emergent beam from a parallel entrance beam comprises lens surfaces with glass or other solid transparent material providing a continuous path between all the surfaces ; the system may constitute the whole or part only of the optical system of an instrument. The Figure shows a submarine periscope comprising optical elements E ... Q, wherein lenses H, I, J have glass bodies S, T extending between their surfaces ; data for these elements are set out in the Specification. Modifications are described in which the end lenses are biconvex, the field lens is bi-concave or omitted, and a reflecting surface is formed on the glass material. The lens surfaces may be worked on the glass material. Specification 361,650 is referred to.
Patent GB-1183362-A (GB)
Title: Improvements in or relating to Hydraulic Brake Control Valves
Inventor: HALES ERIC CHARLES
IPC: F16D65/28
Filed: 1967-02-21
Abstract: 1,183,362. Vehicle braking systems; valves. GIRLING Ltd. 19 Jan., 1968 [21 Feb., 1967], No. 8216/67. Headings F2F and F2V. A brake pressure control valve comprises a piston slidable in a sleeve which in turn is slidable in a bore, an increase in inlet pressure first causing the piston to move in one direction relative to the sleeve and thereby shut off the outlet from the inlet, further increase in inlet pressure then being transmitted to the outlet at a reduced rate by the piston moving in the opposite direction relative to the sleeve. In Fig. 3 a piston 7 is biased in an upward direction by a spring 21 enclosed in two relatively movable cups 28, 29 and acting on a stem 8. In this position a collar 27 on the piston holds a ball 9 off its seat and allows communication between the inlet 2 and outlet 3. The valve seat is formed in a sleeve 6 which is also biased upwardly by a spring 11 assisted by a stronger spring 26 acting against a washer 24 held against a collar 7A on the piston. On increase of inlet pressure, e.g. from a master cylinder, the piston is forced downwardly against the spring 21 and the ball valve 9 closes. Further increase of inlet pressure acts on a step in the piston to force it upwards again, the valve 9 opening to bleed fluid to the outlet with a pressure drop. On release of the inlet pressure the piston and sleeve both move downwards and thus reduce the outlet pressure. When the inlet pressure drops below the outlet, the ball valve opens and allows free return of fluid, after which the piston and sleeve assume their original positions. In a modification (Fig. 4, not shown) the spring 21 is in a sealed cavity around the stem 8 and the spring 26 is omitted. Alternatively, the cup enclosing the end of the spring 21 can be screwed to adjust the pressure relationship (Fig. 2, not shown). In another form (Fig. 1, not shown) the stem 8 receives a spring load depending on the loading of the vehicle. The ball valve 9 may be spring-biased towards a closed position in case gravity should hold it open.
Patent GB-1201744-A (GB)
Title: Shuttle service train
IPC: B61D47/00
Filed: 1969-02-17
Abstract: 1,201,744. Loading and unloading vehicles in mines. HAGGLUND & SONER A.B. 17 Feb., 1969 [21 Feb., 1968], No. 8416/69. Heading B8E. In relatively telescoping rail vehicles having inclined endless conveyers 16 for transferring material from one vehicle to another the vehicles being moved out of telescopic relation when the vehicles are in transit (Fig. 3, not shown), separating walls 28 are supported by projections 32 slidable along the upper edges of the vehicle sides, the lower ends of the walls 28 being adapted to abut flights (16) of the conveyer (Fig. 5, not shown). The projections 32 of the walls 28 co-operate with rearwardly facing hooks 34. In operation, material fed through from one vehicle 10<SP>1</SP> to an adjacent vehicle 10, carries the wall 28 along respective to the vehicle 10<SP>1</SP> until its projections 32 engage the hooks 34. The action of the conveyed material then displaces the wall 28 into the position L. Flexible flaps (36), (36<SP>1</SP>) (Fig. 6, not shown) prevent material from being carried back under the conveyer 16 instead of being transferred to the conveyer of the vehicle 10. Flaps 24 serve to seal the side space at the junction between the two vehicles. Adjustable flaps 18 permit loading to proceed when the vehicles 10, 10<SP>1</SP> &c. are positioned on a curved section of track.
Patent GB-558169-A (GB)
Title: Improvements relating to electrical contact arrangements
IPC: H01H1/16
Filed: 1942-06-19
Abstract: 558,169 Contacts. STANDARD TELEPHONES & CABLES, Ltd., and MADDOCK, A. J. June 19, 1942, No. 8477. [Class 38 (v)] In a contact member having a part in a metallic housing, contact between the two is effected through metallic blocks slidably pressed against the housing under spring pressure, one of the two main contacts having its surface serrated. In the example shown, a metal housing 2 connected in the circuit encloses a roller contact 3 pressed forward by triangular blocks 8 upon the ends of which bears a spring pressed plate 6. Either the wheel 3 or its co-acting contact 1 has a serrated surface, the other being plain. The outer surfaces of the blocks 8 may be serrated.
Patent GB-833027-A (GB)
Title: Dirt exclusion in telescopic shock absorbers
Inventor: ARMSTRONG WILLIAM
IPC: F16F9/38
Filed: 1957-03-15
Abstract: 833,027. Stuffing-box substitutes. ARMSTRONG PATENTS CO. Ltd. Feb. 7, 1958 [March 15, 1957], No. 8553/57. Class 122 (5). [Also in Group XXXII] In a telescopic shock-absorber of the type described in Specifications 657,030, 709,204, and 709,338, a dust cover 4 carries a resilient sheath 6 of rubber, rubber and fabric, or a thermoplastic substance. The sheath 6 may be secured by a clip 8, as shown, or by wire, or by crimping the dust cover. In place of the sheath 6 an internal sheath 10 may be provided. A lip 6a cleans dirt off the casing 7 and prevents dirt getting inside the cover 4.
Patent GB-609655-A (GB)
Title: Improvements in or relating to glazing
IPC: E06B3/54
Filed: 1946-03-19
Abstract: 609,655. Glazing. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST. GOBAIN, CHAUNY, & CIREY. March 19, 1946. No. 8567. Convention date, April 18,1944. [Class 20(iii)] A window glazing consists of tempered, &c., glass cut to fit an opening and having individual attachments 2 seated on and adhesively secured to the edge 1a of the glass as integral parts for securing the glass in the opening, the opposite faces of the attachments lying in or between the planes of the faces of the glass. The attachments 2 may be of the same thickness as the glass and connected to the edge, or secured in a recess 4 in the edge with which it is flush or from which it protrudes as in Fig. 2 or may be recessed to fit into a recessed body portion 7 and attached to that body 3 by bolts 8, as shown in Fig. 4. The edge of the glass may be metallized by projecting pulverized molten aluminium on to the heated edge, and coppering, and the attachments then connected by soldering. The attachment may be of soft metal about a fixing piece more suited to riveting, or may be of thermoplastic and cemented by synthetic resin. A complete frame 2, as in Fig. 10, may be soldered to the edge of the glass and set back from one surface so that when the glazing is attached to the body 3 the outer surfaces are flush. Windscreens may be connected to hinges by protruding attachments.
Patent GB-1470902-A (GB)
Title: Electrical series reactor
IPC: H01F27/28
Filed: 1975-02-28
Abstract: 1470902 Reactors TIOXIDE GROUP Ltd 2 Feb 1976 [28 Feb 1975] 8571/75 Heading HIT A multiphase reactor comprises coils, as shown six in number, each comprising sub-coils 1 these sub-coils consisting of two or more plane spirals, Fig. 4, of hollow conductor connected to provide additive fluxes along the common axis of the spirals. Cooling water is supplied to the sub-coils in parallel via lines 3 and 4, the water passing through a heat exchanger. The spirals are embedded in resin 23, there being no magnetic core. The conductor has a square or rectangular cross-section with a circular bore. Connections 5 to the water supply lines may be made of non-conducting material. The reactor may be connected and mounted with a rectifier to supply a plasma gun in arc-heating apparatus.
Patent GB-609669-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B9/12
Filed: 1946-03-20
Abstract: 609,669. Lenses. TAYLOR, TAYLOR, & HOBSON, Ltd., and COX, A. March 20, 1946, No. 8622. [Class 97 (i)] In a corrected objective comprising as shown a simple front convergent component, a central simple divergent component and a rear doublet, the distance S<1> is between .060 and .090 times the equivalent focal length of the objective, the distance S<2> is between .8 and 1.8 times S<1>, the divergent element of the rear doublet has a lower refractive index and AbbÚ V number than the biconvex element thereof and the expression P<1>(D<1>+1.65S<1>) has a value between .125 and .180 when P<1> is the contribution of the front surface of radius R<1> to the Petzval sum, i.e. P<1>=(n1-1)/n1R1, when n1 is the refractive index of the front element, and D<1> is the thickness shown. Data for three examples are given in two of which the surface R<5> is plane.
Patent GB-609675-A (GB)
Title: Improvements in or relating to pneumatic cylinders
IPC: F16J10/02
Filed: 1946-03-20
Abstract: 609,675. Piston packing. JOFEH, E. J., and DICK, J. A. March 20, 1946, No. 8635. [Classes 122 (i) and 122 (v)] [Also in Group XXVIII] In a pneumatically or hydraulically operating cylinder comprising a barrel 1 into the internally threaded ends of which are screwed flanged end caps 2, 3 having no part extending beyond the external diameter of the barrel (see Group XXVIII) and a piston 4, the latter is provided with a pair of annular grooves into which are sprung oppositely disposed rubber &c. channel section rings 9. A similar single ring 10 is located in a recess in the cap 3. The flanges of the rings 9, 10 are pressed apart by the working fluid.
Patent GB-343781-A (GB)
Title: Pipe joints
IPC: F16L17/08
Filed: 1930-03-18
Abstract: 343,781. Pipe joints. BROMFORD TUBE CO., Ltd., SPENCER, R. W., and PARKINSON, J., Wheelwright Road, Erdington, Birmingham. March 18, 1930, No. 8642. [Class 99 (i).] In a pipe joint the edges of a sealing ring 13 are adapted to be forced into contact with the interior surface of the pipes by the pressure within the pipes. The ring has chamfered edges 20 and a ridge 14 which engages a groove in a packing ring 7 contained in recesses in the abutting end faces of the pipe. Preferably, a plain ring is inserted and the ridge is formed by a spinning operation in situ. The joint is tightened by a clamp having inclined faces 4 engaging corresponding faces on the pipe flanges 3.