baber/WOPTO huggingface dataset:
Patent GB-121681-A (GB)
Title: Improvements relating to Flax and like PUlling or Harvesting Machines.
Inventor: BRYCE ALEXANDER CROSS
IPC: A01D45/06
Filed: 1918-03-13
Abstract: 121,681. Bryce, A. C. March 13, 1918. Flax-pulling machines.-In a machine for harvesting flax, &c., the flax is pulled by gripping- appliances working between parallel rings or flanges projecting from the surface of a rotary drum. The drum d is driven by spur and chain gearing from the axle of the ground wheels b. The gripping-appliances between the rings or flanges f consist of hinged flaps l adapted to be moved from the open positions shown in dotted lines in Fig. 4 to those shown in full lines, by the engagement of levers l<1> with fixed cams m. After being released by the grippers, where required, the flax may be transferred by a rotary brush n to a platform o from which it may be taken by hand or delivered on the ground or to binding- apparatus. The flanges f are triangular in section at their outer edges, and are mounted on the drum in removable sections. In a. modification, the flanges are slightly different in shape in crosssection, and the operating-levers of rows of flaps are connected together and actuated by bars engaging with cams at one or both ends. Two flaps may be arranged to close towards one another between each pair of flanges. The machine is provided with a divider r, and may also be furnished with a de-seeding appliance.
Patent GB-873838-A (GB)
Title: Improvements in or relating to detachable legs for furniture
Inventor: PRICE GEORGE MURRAY
IPC: A47B91/00
Filed: 1957-02-11
Abstract: 873,838. Furniture joints. PRICE BROS. & CO. Ltd. Feb. 11, 1958 [Feb. 11, 1957], No. 4597/57. Class 52(2). A detachable leg 1 for divans &c. has at its upper end a spigot 4 and a member 5 screwthreaded at 6, the spigot engaging ir a recess in the divar and member 5 engaging a nut. A castor-receiving bore 7 is provided. In a modification Fig. 6 a leg 12 has a skirt 18 to obscure the castor. a bore 19 to receive a castor socket 21 and a depending spigot 22 on the divan, and a bore 20 through which passes a screw 26 to engage a nut 25. In another modification Fig. 7 a leg member 27 has a bore 28 to receive a castor socket and slots to receive bolts 30 hinged to the divan frame and engaging wing nuts 32.
Patent GB-433220-A (GB)
Title: Improvements in pit props
IPC: E21D15/44
Filed: 1934-02-12
Abstract: 433,220. Shook-absorbers. SCHRAMM, H., 18, Kahrstrasse, Essen, Germany. Feb. 12, 1934, No. 4603. Convention date, Feb. 10, 1933. [Class 108 (iii)] [See also Group X] A telescopic pit-prop adapted to be placed under hydro - pneumatic counter-pressure is provided with two intercommunicating chambers of fixed and variable capacity respectively. The parts a and c of the prop are formed as piston and cylinder respectively the part a enclosing a chamber b of fixed capacity and the part c the chamber d of variable capacity. The chambers b and d communicate through a passage e<1>, the upper end of which is normally closed by a spring - loaded valve o<6>, the loading on which can be adjusted after the prop is positioned by rotation of the screwed spindle o<2> which carries the valve. The valve can be raised mechanically to open the passage between the chambers by means of a double cross-wedge q coacting with a nut on the upper end of the valve spindle. The chamber b is provided with a valved aperture n through which compressed air may be supplied. The prop is positioned after partially filling the chamber d with glycerine, by raising the loaded valve by means of the wedge q whereupon compressed air supplied through the aperture n passes through the communicating passage between the chambers to the chamber d so that the piston portion a of the prop is pressed upwardly against the mine roof. The loaded valve is then released and the air supply is cut off. When the pressure of subsidence causes the pressure in the chamber d to exceed the loading of the valve o<6>, this valve is raised and liquid passes from the chamber d to the chamber b so that the pressure is relieved and the valve then closes again. This intermittent action continues during further subsidences. To ensure the safety of the prop under extreme pressures an auxiliary spring- loaded passage u Fig. 5, is also provided so that the liquid may pass readily from one chamber to the other. The liquid used is glycerine or a similar substance which does not cause rusting and does not attack leather or rubber.
Patent GB-669750-A (GB)
Title: Improvements in or relating to building blocks
IPC: E04B2/02
Filed: 1949-02-21
Abstract: 669,750. Building blocks. EECON CONSTRUCTION CO., Ltd., and SHARPLES, A. G. Jan. 5, 1950 [Feb. 21, 1949], No. 4607/49. Class 87(i) An apertured building block has one wall 19 of an aperture 13 readily removable due to the formation of internal and external grooves 16, 20. The remaining faces of the block are formed with grooves 17 to provide a key for cement. In a modification, the conduit aperture is smaller than the main apertures. Specifications 595,232 and 624,377, [Group III], are referred to in the Provisional Specification.
Patent GB-994010-A (GB)
Title: Improvements in crop balers
IPC: A01F15/00
Filed: 1964-02-04
Abstract: 994,010. Baling presses. SPERRY RAND CORPORATION. Feb. 4, 1964 [Feb. 6, 1963], No. 4623/64. Heading B5F. In a straight-through crop baler, hay &c. is fed into a bale case 15 by a pair of plungers 40, 41 adapted to be alternately oscillated about vertical axes into and out of the feed opening 21 of the bale case. Each plunger has an arcuate guard wall 48, 49 attached to its outer vertical edge to prevent hay moving behind the plunger. Additional guards 50, 51 are mounted on the inner edges of the plungers. A feed finger 100 or 102 is operative during a working stroke to feed hay into the path of the other plunger. The fingers 100, 102 project through the guard walls 48, 49 and are retracted for each retraction stroke of the plunger. The plungers 40, 41 are oscillated by cranks 86, 94 coupled to the plungers by links 88, 95 to which the feed fingers 100, 102 are pivotally connected. The plungers move over a platform 30 on to which hay is fed by a rotary pick-up reel 31. Shear bars 52, 54 on the vertical edges of the bale case 15 co-operate with knives 55, 56 carried by the plungers.
Patent GB-415058-A (GB)
Title: Improvements in or relating to spirit pyrophoric igniters
IPC: F23Q2/06
Filed: 1933-02-15
Abstract: 415,058. Frictional igniters. HAMPTON, D. B., 53, South Croxted Road, West Dulwich, London. Feb. 15, 1933, No. 4645. [Class 75 (iii).] The friction-wheel and the wick-cap carrier n are loosely mounted on a shaft j fitted with a handle k. On rotating the shaft in a counterclockwise direction to set the mechanism, an arm q on the shaft engages a pin o and rotates the wheel against the action of a spring p to allow a spring catch r to engage a shoulder t on the wheel, the carrier n being moved simultaneously by a spring pl engaging the pin o to bring the wick-cap m over the wick f. To ignite the wick, the shaft is rotated clockwise until the arm q releases the spring catch r. The wheel n is then rotated by the spring p against the flint h, the wick-cap m being removed simultaneously from the wick by a pin o<1> on the wheel engaging the carrier n. The mechanism may be mounted with the shaft in a vertical position. A plate may be attached to the cap m to cover the opening in a cover v. The igniter may be incorporated in a casing for pocket use or secured in a stand a by a bayonet joint or screw-thread or the fuel container b may be provided in the stand.
Patent GB-973417-A (GB)
Title: Improvements in or relating to method of manufacturing printed circuits
IPC: H01R12/51
Filed: 1961-02-08
Abstract: 973,417. Printed circuits. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Feb. 8, 1961, No. 4727/61. Heading H1R. [Also in Division H2] A method of interconnecting a stack of printed circuit boards bearing printed conductors on opposite faces and each board being separated from each other by a thin insulating layer, comprises the steps of providing isolated conductive areas on the faces of the boards opposite those conductors adjacent to each of the thin insulating layers, connecting the conductive areas to the conductors by hole metallization and finally connecting the conductive areas themselves by hole metallization. Printed circuit boards I, II each comprising an insulating base 13 carrying on opposite faces conductors 14, 15, Figs. 5 and 6, are glued together by a thin insulating layer 30, Fig. 8. The exterior surfaces a, d of the boards are provided with isolated conductive terminal areas 16 in register with the conductors 15 on the surfaces c, d of the two boards. After connecting each terminal area 16 with a corresponding conductor 15 by filling holes 17 drilled through the board with metal 18 the terminal areas 16 on surface a are connected to areas 16 on surface d by filling holes 27 drilled through the stack with metal 20. Further through connections between conductors 14 on the outer surfaces a and d are similarly made by hole metallization. A stack of three printed circuit boards may be similarly interconnected, Fig. 9 (not shown), by using an additional isolated terminal area. The method may be applied to the interconnection of the windings of multiple winding armatures for electric motors, Figs. 10 to 21 (not shown). Specifications 898,337, 935,652 and 962,322 are referred to.
Patent GB-855942-A (GB)
Title: Improvements in self-excited synchronous generators
IPC: H02K19/28
Filed: 1959-02-11
Abstract: 855,942. Exciting alternators; automatic voltage control systems. ALLMANNA SVENSKA ELEKTRISKA A.B. Feb. 11, 1959 [Feb. 14, 1958], No. 4733/59. Classes 35 and 38 (4). The use of current transformers for the compound excitation of an alternator is avoided by forming the D.C. pole member so that a pronounced third harmonic is induced when the machine is loaded or short-circuited and feeding this harmonic component to the field winding through rectifiers. The third-harmonic component may be tapped from the star-point of the main stator windings either directly or through transformers, or taken from an auxiliary stator winding, or both. Moreover, it may be used to provide the whole excitation or be used to supplement excitation derived from the output terminals of the machine, or the excitation current derived from the third-harmonic component may be controlled by a known regulator in dependence on the output voltage of the machine. The auxiliary third-harmonic stator winding may be three-phase, but in the form shown, a singlephase winding 12 is used, a neutral point O being connected through this winding from the main winding 3, if desired. The current supplied through rectifier 14 to the field winding 4 is regulated in dependence on the terminal voltage by means of a self-excited transductor regulator 13 whose control winding 15 is energized from the machine terminals through a rectifier and a saturable reactor 17. An additional control winding 18, opposing winding 15 and assisting the self-excitation, is energized from the harmonic winding 12 through a rectifier 19. In the form shown, all the excitation energy is derived from the harmonic winding, but a modification is described in which some of it is taken from the main winding by means of a series connection of the auxiliary winding through the star-point of the main winding in such a way that the third harmonics are additive.
Patent GB-1455322-A (GB)
Title: Castors
IPC: B60B33/00
Filed: 1974-02-01
Abstract: 1455322 Castors J P ANDERSEN 1 Feb 1974 [13 Feb 1973] 04742/74 Heading A4U A castor comprises a support member 1 from the sides of which extend shafts 6 on which are rotatably mounted wheels 7, and a casing 9 substantially surrounding the support member 1 and the wheels 7 and through which extends a vertical pin (not shown) which is rotatably engaged by the support member 1. The vertical pin engages in a sleeve 5 and three bores 4 in the support member 1 are provided for alternative use by the vertical pin. Two vertical pins may be used to fix the castor. The casing 9 has a bottom opening 10 which is of a width such that by removing the vertical pin and sleeve 5 the support member 1 can be moved around the inside of the casing to permit removal from the casing of the wheels 7 and shafts 6 and then removal of the support member itself. In a second embodiment, Figs. 3 and 4 (not shown), the casing is part cylindrical in shape and the shafts 6 are replaced by a common straight shaft. The support member 1 with the straight shaft and the wheels assembled on it are removable from the casing as a unit. In a third embodiment, Figs. 5 and 6 (not shown), the casing is part-spherical in shape and the wheels 7 are mounted on a straight shaft. A downwardly directed slot (18) in the support member 1 extends from the bore for the straight shaft to open at the bottom of the support member 1 whereby the wheels and the shaft can be removed as a unit.
Patent GB-547368-A (GB)
Title: Telephone switch
IPC: H01H67/02
Filed: 1941-04-11
Abstract: 547,368. Electric motors. STANDARD TELEPHONES & CABLES, Ltd. April 11, 1941, No. 4848. Convention date, April 12, 1940. [Class 35] [Also in Groups XXXIX and XXXVII] In a continuously-driven rotary switch which may be used for connecting a number of subscribers' lines in rapid succession to a common circuit for the purpose of detecting a calling condition, as in Specification 541,768, [Group XXXIX], the connections are made through a free ball or other roller which is driven mechanically or electromagnetically around an annular track bounded on the outside by the contact bank. In Fig. 1, the ball 12 engages a bank formed with alternate active and spacer contacts 4, 5 and a feeder ring 6 to which the spacer contacts may be connected. The ball lies within the forked end of a driving arm 13 which is rotated by a motor 17, and is pressed against the contacts and the feeder ring by centrifugal force, if desired with the help of a spring. The switch may be duplicated as shown. In a modification, the arm 13 is replaced by a pair of resilient discs with dished edges forming a V- shaped peripheral groove in which the ball is wedged. In Fig. 3, the contacts 4, 5 are moulded in an insulating ring 23, preferably projecting slightly beyond it, and the ball 12, which is of steel, soft iron or high permeability alloy, runs on a track 6 under the influence of a variable magnetic field produced by an annular winding 24 lying within a magnetic structure 25 formed with two sets of poles 26, 27 on either side of the track. The track 6 may constitute a feeder ring connected or not to alternate spacer contacts, or the feed may be applied only to the latter. An electromagnetic striker may be provided for starting the ball, and the track may be inclined so that when the current is off, the ball comes to rest in a given position on the track or on another inner track. In a modification, each pole is replaced by a pair of poles one of which is shaded and the ball is made wholly or partially of non-magnetic material such as copper or bronze so that it is started by eddy current effects. In another driving arrangement, Fig. 5, the magnetic field is produced by an iron core 29 having a pair of straps 30, 31 extending diametrically and the circuit of the winding 28 includes two sets of contact springs 34 under the control of pivoted fingers which are engaged by the ball at suitable points of its travel between the poles.
Patent GB-1071996-A (GB)
Title: Process for preparing tetrachloroethyl-sulphenyl chloride
IPC: C07C331/08
Filed: 1966-02-03
Abstract: Preparation of 1,1,2,2-tetrachloroethyl sulphenyl chloride by reacting trichloroethylene with sulphur dichloride at a temperature in the range 0 DEG  to 200 DEG  C.  The reaction may be carried out, optionally in the presence of a suitable inert solvent; either at a temperature in the range 0 DEG  to 80 DEG  C. in the presence of specified chemical free radical catalysts or a physical means of generating free radicals, e.g. visible or ultra-violet light; or at a temperature in the range 80 DEG  to 150 DEG  C. in the absence of a catalyst.
Patent GB-647979-A (GB)
Title: Can arranging mechanism
IPC: B65G47/84
Filed: 1948-02-19
Abstract: 647,979. Endless-chain conveyers; shoots &c. CHISHOLM-RYDER CO. OF PENNSYLVANIA. Feb. 19, 1948, No. 4963. Convention date, July 2, 1942. [Class 78 (i)] During conveyance, cans arranged in single file are converted into two lines by shifting every other can laterally to one side and the remainder to the other side by means of a moving member co-operating with a stationary cam. The cans C are in single file on a track 52, Fig. 1, pivotally mounted upon ears 53, Fig. 2, on a housing 20. Angle irons 56, 57 define a channel through which the cans pass to a point vertically below a shaft 59, the cans resting on a flexible member 65 stretched around a curved member 60 by means of springs 67. The flexible member prevents jamming of cans during feeding. A pair of endless chains 95 driven by upper sprockets 96 from a motor 98 is trained around a pair of lower sprocketwheels 77 freely mounted on the shaft 59. Cross-bars 110 between the chains engage the cans in such a way that when the cans reach the curved member 60 at a point below shaft 59 channel bars 76 interconnecting sprocketwheels 77 and arranged in a circle are positioned one over each can. The channel bars 76 are each provided with a slot 86 which receives a tongue, Fig. 5, of a block 82 and also a bolt 90 which connects block 82 to a block 84 beneath the slot and within the channel bar. The lower end of the bolt is provided with a roller 93, Fig. 6, engaging in a cam groove 71 or 72 cut in a cylindrical block 70 which is secured to shaft 59 between sprocket-wheels 77. The rollers 93 of alternate blocks 82 engage groove 71 whilst the rest engage groove 72. The grooves are so formed that the blocks are withdrawn to one or other end of their slots when vertically below shaft 59. They thus each engage a can at alternate sides and the grooves are shaped so that as the cans are conveyed upwards around plate 60 blocks 82 push the cans to alternate sides of the plate 60 where they enter channel 45 or 46, each of which leads to a discharge shoot 123, Figs. 1 and 2. Guides 115 guide the chains 95 during upward conveyance so that bars 110 are one side of the vertical centre line of the cans so as to roll them on to the shoots 123. A plate 117 ensures discharge when cans are piled on the shoots 123. These shoots lead to a packing machine. If a delay in packing causes piling up of the cans on shoots 123, the weight of cans operates switches by means of hinged plates 120, 121 to switch off the motor 98.
Patent GB-799001-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: AIKIN ARTHUR WATSON
IPC: G21C7/22
Filed: 1956-02-17
Abstract: 799,001. Nuclear reactors. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 15, 1957 [Feb. 17, 1956], No. 5027/56. Drawings to Specification. Class 39(4). In a control system for fast fission or fusion reactors to neutron absorbing liquid is circulated through the reactor core. The liquid may be molten lithium alloyed with sodium. The volume and position of the lithium may be adjusted either by moving the ducting carrying the lithium or by controlling the liquid level. The lithium is circulated through a heat exchanger by a pump, which is by-passed to permit the continuous removal of by-products. Heating coils round the ducting maintain the lithium in liquid form when the reactor is operating on low power.
Patent GB-1492851-A (GB)
Title: Production of aminonitrodihydroxyanthraquinones
IPC: C07C225/36
Filed: 1975-02-06
Abstract: 1492851 Production of aminonitrodihydroxyanthraquinones BASF AG 6 Feb 1975 [7 Feb 1974] 5052/75 Heading C4P A process for the production of an amino nitro-dihydroxyanthraquinone of formula in which one X is OH and the other X is NO 2  comprises heating 1,5-dinitro-4,8-dihydroxyanthraquinone, 1,8 - dinitro - 4,5 - dihydroxyanthraquinone or a mixture of the two in the presence of a phenol at 80-250‹ C until one NO 2  group has been reduced to amino, and the reduction product is then separated. Suitable phenols include phenol, cresols, xylenols, aminophenols, tert - butylphenol, resorcinol, pyrogallol, hydroquinone, chlorophenol, hydroquinone monomethyl ether, or mixtures of these. An alkaline agent may be present, such as potassium or sodium carbonate or hydrogen carbonate, N,N-dimethylaniline, piperidine, quinoline or pyridine. An organic solvent may also be present.
Patent GB-706597-A (GB)
Title: Improvements in or relating to multi-channel electric pulse modulation signalling systems
IPC: H04J3/00
Filed: 1952-02-27
Abstract: 706,597. Pulse modulation systems. GENERAL ELECTRIC CO., Ltd., and SPEED, R. F. B. Feb. 13, 1953 [Feb. 27, 1952], No. 5166/52. Class 40 (5) A wideband signal is transmitted over a pulse multiplex system by modulating a plurality of channels thereof with different frequency bands of the signal. These bands are as follows: nfr/2 to (n + l)fr/2, (n + l)fr/2 to (n + 2)fr/2 ... (m - 1)fr/2 to mfr/2 where n is zero or any positive integer, m is any positive integer at least two greater than n and fr is the channel recurrence frequency. For a signal extending from zero to fs, n is made zero and m the nearest integral multiple of fr/2 greater than fs.
Patent GB-1027514-A (GB)
Title: Improvements in or relating to the surface aeration of liquids
IPC: B01F3/04
Filed: 1964-02-07
Abstract: 1,027,514. Aerating and agitating liquids. AMES CROSTA MILLS & CO. Ltd and J. F. BOLTON. Feb. 4, 1965 [Feb. 7,1964], No. 5213/64. Heading B1C. A surface aerator 28 is connected to a driving shaft 18 by a coupling 20 bolted to a hollow extension shaft 25, and is located by an annular baseplate 14 relative to a fixed uptake 10. The motor 17, gearbox 16 and aerator can be withdrawn upwards by a tackle 32; the coupling 20 may then be disconnected, the aerator 28 provided with a temporary support in the raised position, and the motor and gearbox moved to the dotted line position in which they will clear other aerating units reconnected onthe bridge 11 as they are traversed by the travelling carriage 31.
Patent GB-230072-A (GB)
Title: Improvements in or relating to hats
IPC: A42B1/02
Filed: 1925-02-25
Abstract: 230,072. Thalimer, C. M. Feb. 25, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Felt hats.-A " derby " hat is made with a soft flexible crown portion and a stiff sized outer brim portion. The whole of the brim may be stiffened i:' desired, but no stiffening is applied to the crown.