baber/WOPTO huggingface dataset:
Patent GB-141993-A (GB)
Title: Improvements in flat bed knitting machines
IPC: D04B7/04
Filed: 1919-08-07
Abstract: 141,993. Lippitt, E. Aug. 7, 1919. Parallet machines producing fashioned fabrics, preferably on bearded needles, are provided with a presser device 18, Fig. 10, and an associated sinker device 21, Fig. 11, for the individual needles, a plurality of yarn-guides and pressure devices including springs 12, which act on the needle jacks 5 instead of on the needles as usual, and hold the needles down on the bed without subjecting them to wear against the springs during reciprocation. The latch or bearded needles 4 are each mounted in a jack 5, having a butt 5<c> extending through the needle bed into range of cam drums 11, the links 11<a> of which raise corresponding needles into the range, of the operating cams. The jacks 5 are normally held down by springs 12 mounted on rods 13. The cam carriages are reciprocated by driving screws 14 having spiral grooves 14<a>, 14<b> engaging crossheads 15 on stems 16 swivelling in blocks 17 interlocked with the cam carriages. The jacks and needles slide in guide-grooves formed by guideplates 7 fixed in the tricked needle beds 3 and carrying at their upper ends the pivoted pressers 18 and sliding sinkers 21. Pins 22 on the presser plates 18 work in slots 23 of the neighbouring sinkers, and thus support them on the outer curved edge 7<x> of the plates 7, while pins 28 work in slots 27 of tumbler disks 24 mounted in openings 25 of the plates 7 and operating the sinkers by means of lugs 26. Butts 31 of the pressers are operated by cam slides 29 to cause the rounded portions 20 to press the beards, and subsequently to cause the associated sinker 21 to cast-off the loop. This cast-off obviates side-strains on the yarn or fabric, and is of special advantage in the formation of combined ribbed and ribless work. When latch needles are used, the presser and sinker mechanism is locked out of action. The nibs 7<a> of the plates 7 are hooked over the upper edges of the beds 3, and are spaced by hardened removable wear plates 7<c>. Two guides as 45 mounted on slides as 45<a>, carried in guideways formed in the machine frame, are reciprocated by upwardly extending driving lugs 47 on the presser plate cam slides 29 engaging arms 48 connected to the yarn-guides 45, which are pivoted to their slides at 45<c> and normally placed in yarn-feeding and drive-engaging position by springs 46. The guides, only one being in action at a time, are operated by pivoted plates acted on alternately by cams on two ratchet-driven wheels fixed to the ends of the cam drums 11. The drums 11 and parts operated thereby are driven by a reciprocating slide under control of a pattern-chain, which renders it inoperative at times according to the character of the work to be produced.
Patent GB-413868-A (GB)
Title: Improvements in or relating to thermionic oscillation generators
IPC: H03B5/10
Filed: 1933-07-10
Abstract: 413,868. Valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin.-(Assignees of Heegner, K. ; 2, Elisenstrasse, Steglitz, Berlin.) July 10, 1933, No. 19555. Convention date, July 8, 1932. [Class 40 (v).] An oscillator valve having an inductance L and capacity C connected in series in its anode circuit has its grid energized through an amplifier valve Fig. 5 or from the series circuit Fig. 1. A screen grid valve may be used and the load connected between the anode and screen-grid which serves as the anode for the valve as an oscillator. Fig. 1 shows a valve of high mutual conductance fed through a high resistance and with a high resistance Rg between the grid and the junction point of the condenser and inductance, which may be adjustable to vary the feed-back coupling. Fig. 3 shows a pair of valves in which each of the grids is energized from the anode circuit of the other valve. The arrangements are stated to maintain frequency constant and a piezo-electric crystal Kr, Fig. 5, may be provided to increase the stability. If piezoelectric crystals with temperature co-efficients of opposite sign are used in the circuit shown in Fig. 3 small variations in the ambient temperature will have no substantial effect on the frequency generated by adjustment of resistances Ra1, Ra2.
Patent GB-1127497-A (GB)
Title: Lock for telescoping tubes
Inventor: WELT DAVID IRWIN
IPC: F16C29/10
Filed: 1966-05-03
Abstract: 1,127,497. Clamps. SAFE-LOCK Inc. 3 May, 1966, No. 19573,/66. Heading ,E2B. A telescoping tube system comprises the combination of inner and an outer tubes 16, 18 a support element 36 carried by the inner end 26 of the inner tube, a cam 40 mounted on the support element eccentrically with respect to the axis of the tubes, means connecting the cam with the support element and inner tube for sliding movement therewith within the outer tube and for rotational movement relative to the inner tube and the support element about the axis of eccentricity when it is desired to bring the cam into wedging relation with the outer tube to restrain relative movement of the tubes. As applied to a tripod the support element 36 in the form of a plug is eccentrically apertured at 38 for a boss 42 having a through passage 44 of hexagonal section for one end of a hexagonal operating rod 46 which is retained by a nut 48. The other end of the rod 46 passes freely through a plug 30 in the inner tube and is rotatable by a handle 52 to rotate the cam 40 into and cut of locking positions with respect to the outer tube 18. The cam which may be resilient plastics material is provided with a metal sleeve 60, preferably of aluminium, and preferably rotatable relative to the cam. In another arrangement as applied to a microphone stand, Figs. 10-14 (not shown) the cam is rotatably mounted on a pin eccentrically mounted in a plug at the inner end of the inner tube and is formed with a substantially sector shaped cut-out defining abutments for a pin depending from the plug whereby locking and unlocking of the cam is effected by relative rotation of the inner and outer tubes.
Patent GB-424195-A (GB)
Title: Improvements in fluorescent substances
IPC: G21K4/00
Filed: 1933-07-11
Abstract: 424,195. Fluorescent screens. LEVY, L. A., WEST, D. W., 31, Shoot-up Hill, Cricklewood, London, and ILFORD, Ltd., 23, Roden Street, lIford, Essex. July 11, 1933, No. 19609. [Class 98 (i)] A screen for X-ray or cathode-ray work, exhibiting little after-glow or persistence of latent image, comprises zinc sulphide, or a mixture of zinc and cadmium sulphides, with or without an activator such as silver, and containing minute traces of nickel. The ratio of nickel to the sulphide or sulphide mixture lies between about 1/500,000 and 1/3,000,000, and is preferably 1 /1,000,000. The screen may contain a non-active binder such as gelatin, or cellulose nitrate or acetate. The sulphide is prepared in a highly pure state, as free as possible from heavy metals such as copper, iron, manganese, or vanadium, and preferably also from lighter metals such as alkali or alkaline earth metals ; the activator (e.g. silver in the form of a salt) and nickel (e.g. in the form of chloride) are added ; and the whole is uniformly mixed and heated strongly, e.g. to 1200-1300‹ C., if desired in the presence of a fusible salt, e.g. sodium chloride. The Provisional Specification refers also to cobalt as an alternative to nickel.
Patent GB-890425-A (GB)
Title: Improvements in or relating to processes for producing fluorinated compounds and products obtained thereby
IPC: C07C51/62
Filed: 1960-06-02
Abstract: Compounds of the formula (CXF2(CF2)pR wherein R represents -COX or -CXF2, X represents a chlorine or fluorine atom and p is 1 or 2) are made by heating a fluorinated organic starting material of the formula R(CF2)nCOX, wherein R and X are as aforesaid and n is 2 or 3, in the gas phase at a temperature not above about 500 DEG C. in the presence of an anhydrous aluminium fluoride catalyst obtained by reaction of aluminium chloride with hydrogen fluoride and having a crystallite size not greater than about 500 Angstrom units radius, the reaction time and temperature being such that at least part of the starting material is decarbonylated to give at least one compound CXF2(CF2)pR.  The aluminium fluoride catalyst p  may be prepared as described in U.S.A. Specification 2,676,996. The reaction takes place at temperatures of 225 DEG C.-500 DEG C., preferably at 275 DEG C.-425 DEG C.  Contact times may lie in the range 5-150 seconds. Examples of products are perfluorobutyryl fluoride, perfluorobutyryl chloride, 1-chloroperfluorobutyryl chloride, perfluoropropane, 3-chloroperfluoropropane and 1,3-dichloroperfluoropropane.  The fluorobutyryl halides may be hydrolysed to chlorofluorobutyric acid and perfluorobutyric acid. Suitable starting materials are perfluoroglutaryl dichloride, made by reaction of either phosphorus pentachloride or thionyl chloride with perfluoroglutaric acid; perfluoroglutaryl difluoride, made by adding the dichloride dropwise to a mixture of SbF3 and SbCl5 heated under reflux with a fractionating column the head temperature of which is 47 DEG C., the product being removed continuously; perfluoroglutaryl chlorofluoride, made as for the difluoride except that upon addition of the perfluoroglutaryl dichloride to the SbF3-SbCl5, the rate of take off at the top of the fractionating column is kept at a sufficiently rapid rate so as to maintain a head temperature in the range 65-70 DEG C., the chlorofluoride thus being removed before complete fluorination is effected.
Patent GB-1079312-A (GB)
Title: Improvements in safety devices for use with night latches
IPC: E05B13/00
Filed: 1964-05-12
Abstract: 1,079,312. Latches. G. V. CAULFIELD. Aug. 11, 1965 [May 12, 1964], No. 19686/64. Heading E2A. A guard for a night latch comprises a first member 10 for engagement over the latch bolt and a channel shaped second member 12 rigid with the first member for shielding the latch bolt retracting knob. As shown, the side walls of the second member converge towards one another and one wall includes an cut-out 20 for the knob. An end closure 16 is provided or that end of the second member may be left open and the cut-out 20 omitted.
Patent GB-274906-A (GB)
Title: Device for packing and reinforcing air heaters of the pocket type
IPC: F28D9/00
Filed: 1927-07-25
Abstract: 274,906. Hartmann, P. E., (Assignee of Hartmann, M. & E.). July 24, 1926, [Convention date]. Heating air.-To secure and reinforce the edges of plates a in an air heater a stamped plate b is employed extending over several pairs of plates and provided with apertures with upturned edges c into which the pairs of plates fit and are secured by welding. Adjacent units thus formed can be secured by the flanges d.
Patent GB-588721-A (GB)
Title: Ultra high-frequency oscillator circuit
IPC: H01P7/02
Filed: 1944-10-12
Abstract: 588,721. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 12, 1944, No. 19736. Convention date, Oct. 28, 1943. [Classes 39 (i) and 40 (v)] In an ultra-high frequency valve oscillator, the anode and cathode circuits consist of resonant lines which are separately tunable, and are shielded from each other by means including the control grid, a feedback loop providing the regenerative coupling. The Figure shows a push-pull oscillator comprising triodes 10, 11 whose grids are connected to earthed screening plate 12, whose anodes are tuned by means of hollow conductors 14 and telescopic end-connector 15 and whose cathodes are tuned by means of hollow conductors 16 and the slidably connecting plate 17 forming part of can 18. Back coupling is provided by the S-shaped loop 30, 31, the part 30 being inductively coupled with the anode circuit and part 31 with the cathode circuit ; the mid-point of the loop is connected to central conductor of coaxial line 33 which is tunable to make the loop electrically equivalent to one-half wavelength. The whole is enclosed in conducting earthed screen 21, which forms a condenser with can 18 and distributed capacity with anode tuner 14, 15. Loop 34 supplies power to transmission line 36. An arrangement is described for providing air cooling to the valves (Fig. 2, not shown).
Patent GB-833736-A (GB)
Title: Improvements in apparatus for feeding articles of fabric or other lightweight material
Inventor: CRAN WILLIAM BROADBENT GORDON
IPC: B65H7/02
Filed: 1957-06-24
Abstract: 833,736. Laundry feeding arrangements. BROADBENT & SONS Ltd., T. May 28, 1958 [June 24, 1957], No. 19771/57. Class 138 (2). [Also in Group XVI] In a machine, such as a folding machine for laundry flatwork, in which articles f of fabric &c. travel on an endless conveyer h, a switchactuating arm b intercepts an air jet d directed on to and through the conveyer if and when the flow of articles on the conveyer fails or is interrupted, so that the switch is then operated to control the machine, the normal flow of articles on the conveyer preventing the air jet impinging on the arm b. The air jet impinges on a cup-like part c on the arm b, and overcomes the action of a spring g in the switch a to open the switch. In a modification, the air jet may be used to close the switch. The fabric f is supported on a belt h made up of a number of spaced lengths of material so that the air jet can pass through the gaps between them.
Patent GB-806174-A (GB)
Title: Improvements in or relating to coal-cutter chains and like mineral-cutting devices
IPC: E21C35/193
Filed: 1956-06-27
Abstract: 806,174. Mineral - mining apparatus. HOY & CO., Ltd., A., and PROCTOR, S. E. June 18, 1957 [June 27, 1956; Oct. 22, 1956], Nos. 19953/56 and 32163/56. Class 68(1) The threaded shank of a mineralcutting pick is screwed into a bore in a pick mount of a mineral - mining machine and locked to the mount by an upwardly biased latch member that cannot rotate in the bore and engages in a transverse slot in the bottom of the pick. A bore 18 extends up through the pick to merge into a second bore 19 into which can be inserted a bar to press down the extension 26 of the latch against a spring to allow of further rotation of the pick. In another embodiment to that shown, fingers on the latch slide in keyways in the sides of the bore which is closed off at the lower end.
Patent GB-960037-A (GB)
Title: Preparation of paper sizing emulsion
IPC: D21H17/48
Filed: 1962-05-24
Abstract: An aqueous dispersion of stearic anhydride for sizing paper is prepared by mixing the anhydride, at a temperature above its melting point, with water containing cationic starch and, as an anionic agent for inhibiting the formation of anhydride aggregates, sodium lignosulphonate and/or sodium formaldehyde-condensed naphthalene-sulphonate.  The cationic starch may carry amino or quaternary ammonium groups.  The pH may have been adjusted to 6-7 by the addition of hydrochloride acid or sodium hydroxide.  1-10% of anionic agent based on the cationic starch may be used.  Titanium dioxide, ultramarine blanc fixe, or perfume may be added before, during, or after dispersion.  The dispersion may be rapidly cooled and its pH adjusted to 3-5.  In the examples the dispersion comprises 6% of stearic anhydride, 3% of cationic starch, and 0.15% of anionic agent.
Patent GB-618042-A (GB)
Title: Inking mechanism for printing machines
IPC: B41F31/08
Filed: 1946-01-16
Abstract: 618,042. Inking apparatus; damping apparatus. HOE & CO., Ltd., R. Jan, 16, 1946, No. 20074/48. Convention date, Jan. 16, 1945. Divided out of 617,971. Drawings to Specification. [Class 100(ii)] In inking apparatus for newspaper &c. printing machines of the type comprising an ink rail which has a discharge surface shaped to curve about the periphery of a distribution cylinder and carries ink pumps delivering ink to outlets in the surface, a selector device is provided for connecting the inlets of the pumps selectively to any one of a number of ink supplies or of ink supplies and a cleansing medium. The apparatus described is the same as that described in Specification 617,971. The Specification, as open to inspection under Sect. 91, states that the apparatus may be used for damping lithographic plates. This subject-matter does not appear in the Specification as accepted.
Patent GB-1277211-A (GB)
Title: Improvements in or relating to electro-pneumatic braking systems
Inventor: BOWRAN JACK
IPC: B60T17/22
Filed: 1968-04-29
Abstract: 1277211 Electro-pneumatic braking systems; valves DAVIES & METCALFE Ltd 28 July 1969 [29 April 1968] 20137/68 Headings F2F and F2V  An electro-pneumatic braking system for a vehicle, specifically a railway vehicle, comprises an electrical transducer 18 responsive to air pressure in a brake cylinder 19 of the system to provide an output signal whose magnitude is a function of the air pressure value a manually operated controller 10 (as described in co-pending Specification 1,272,003) providing a braking demand signal in line 11 with which demand signal the output signal is compared and a relay RL1 operable by the signal differential between output and demand signals to actuate valves EP1, EP2 to alter the air pressure in the cylinder 19 and obtain braking which is a function of the demand signal. As shown, contacts rL/1 of relay RL1 are movable to energize either relay RL2 or relay RL3, which respectively have normally closed contacts rL2 and normally open contacts rL3. Valve EP1 which is normally open is provided in the air supply line to the cylinder 19 and normally closed valve EP2 allows exhaustion of air from the cylinder 19 to the atmosphere. When there is no signal differential the relay RL1 is not energized and relays RL2, RL3 are not energized so that valve EP1 is energized through contacts r12 and is closed and valve EP2 is in its normally closed condition. When brake application is required a signal differential occurs of such a sign as to cause relay RL1 to energize relay RL2 opening contacts r12 which causes valve EP1 to open to apply air pressure to the brake cylinder 19: as the voltage across transducer 18 rises with increasing air pressure in cylinder 19 the signal differential disappears. The relay RL1 de-energizes to close valve EP1 and braking is maintained. When brake release is required a signal differential of opposite sign energizes relay RL3 to close contacts r13 to open valve EP2 thus exhausting the brake cylinder 19. A power failure causes the system to fail safe with valve EP1 open, valve EP2 closed and the brakes applied. The system also includes a transducer 20 responsive to the pressure in the pneumatic suspension of the vehicle and hence to the vehicle load, and in the air line between valve EP1 and the brake cylinder 19 is interposed a valve 21 having a valve member 23 connected to a piston 25, the bottom side of which experiences the pressure in the air line and the top side of which experiences the pressure in the pneumatic suspension. The relays may be replaced by static electronic devices.
Patent GB-837233-A (GB)
Title: Improvements in load carrying shock absorbers
Inventor: BRANDER ARTHUR
IPC: B66B7/06
Filed: 1957-06-26
Abstract: 837,233. Rubber springs. BRITISH STEEL PILING CO. Ltd. June 18, 1958 [June 26, 1957], No. 20167/57. Class 108(3) In a rubber spring, buffer elements 8, mounted in plates 7, are separated by plates 9. Under load the buffer elements are compressed between plates 1 and 2. Plate 1 is attached by bolt 12 to plate 11. Plate 2 is attached to a hook 4 by a bolt 3 which may be covered with nylon to prevent abrasion.
Patent GB-184172-A (GB)
Title: Improvements in or relating to glass shaping machines
IPC: C03B9/16
Filed: 1922-07-25
Abstract: 184,172. Hartford-Fairmont Co., (Assignees of Genest, H. A.). Aug. 8, 1921, [Convention date]. Blowing.-An automatic glass-shaping machine, of the type in which the moulds are carried by a turret rotating intermittently, has the moulds arranged in pairs, each pair comprising a parison mould and a blow mould, adapted to turn about a common axis so as to invert the moulds and reverse their positions. The operation of the machine is shown in Figs. 1 - - 8. A parison mould 26 and a blow mould 30 are arranged in one head with their necks pointing in opposite directions. At the first station, a charge of metal 27 is fed into the upturned parison mould and is settled into the ring mould 28 around the plunger 29 by air admitted from a blowhead 32. The moulds are then inverted, as shown in Figs. 3 and 4, and after a plate 33 has closed the bottom of the parison mould, the parison is blown, by a blowhead 34, to fill the mould. The ring mould now opens, transfer tongs 35, Figs. 5 and 6, grip the mouth of the bottle, and the moulds open, reverse, and then close again so that a finished bottle 31 is discharged from the blow mould and is replaced by the succeeding parison, as shown in Fig. 7. The bottle is now blown to its final form by air from the blowhead 34. The moulds radiate from a turret 40, Figs. 11 and 12, which rotates about a column 41 and each pair of mould bodies are crossed and are pivoted at their intersection on a stud 55. Provision is made for adjusting the moulds so that the halves are in proper contact when the bodies are closed. The moulds are opened and closed by a piston 66 working in a pneumatic cylinder 58 which forms the axis about which the moulds rotate, and they are turned about this axis for reversal by a fixed toothed rack and by an oscillating toothed rack 132, which engages at the proper times a bevel-gear 130 secured to the mould carriers. The ring moulds 28, associated with each parison mould, are carried by arms 73 pivoted on the studs 55, and are opened by links 80 operated by cams 86 carried by a cylinder 87 fixed on the column 41. The transfer tongs 35, which hold the parison while the moulds are opened and inverted, comprise jaws 92, Fig. 12, which are lowered into the path of the parison and are opened and closed by cams. The jaws have a floating movement to accommodate themselves to slight variations in the positions of the parisons, and they are arranged to yield if the parison moulds fail to open. Pins 65, Fig. 11, reciprocated by cams, lock the mould carrier in either of the inverted positions.
Patent GB-335933-A (GB)
Title: Improvements in means for slitting webs of paper and the like
IPC: B26D1/24
Filed: 1929-07-03
Abstract: 335,933. Triggs, W. W., (Cameron Machine Co.). July 3, 1929. Stationary - cutter machines.-A web to be slit is drawn and guided by rolls between a score cutter 2 mounted e.g. on ball bearings to revolve freely under the tractive influence of the web and a backing member 1 having a glasshard surface similarly mounted and revolved by the web. Each score cutter may have its own backing member adjustable transversely on a beam 8, and may be adjustable radially and transversely. Alternatively each backing member may be associated with two or more score cutters or a single backing member may be provided extending over the width of the machine. The shaft on which the backing members are freely mounted may be revolved nearly at the speed of the web. Specification 1740/12 is referred to.