baber/WOPTO huggingface dataset:
Patent GB-821750-A (GB)
Title: Improvements in or relating to electric control switching systems for controlling the supply of power to a load
IPC: H02M3/04
Filed: 1957-06-12
Abstract: 821,750. Magnetic amplifiers. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. June 12, 1957 [June 22, 1956], No. 18520/57. Class 40 (9). [Also in Group XXXVII] A system for regulating the current flow to a load such as a regulating motor by means of variable width pulses comprises a square wave generator 10 which may be a transistor inverter switching through rectifiers 32,. 33 one or more transistors 13, 14 in series between a load 30 and a power source 31. The pulse width is determined by a linear magnetic amplifier 15- 18 which is controlled by a signal applied to terminals 28, 29. Transistors 13, 14 operate in unison at each half-cycle, thus permitting a current flow from source 31 through load 30. A biasing circuit comprises rectifiers 36, 38 and a common resistor 37 with source 42 to block leakage current from rectifiers 32, 33, hence prevent undesirable heating of the transistors at quiescent periods. The switching frequency may be from less than 60 cycles per second to 10 kilocycles per second or more, but is preferably between 1 and 5 kilocycles per second. Other arrangements are described whereby transistors are switched alternately to give an alternating output from a D.C. source, and utilizing a plurality of magnetic amplifiers. Further arrangements are described which are controlled by mixed A.C. and D.C. signals.
Patent GB-1017294-A (GB)
Title: Sealing gaskets
IPC: F16J15/12
Filed: 1963-05-10
Abstract: 1,017,294. Gaskets; pipe joints. H. J. QUINSON. May 10, 1963 [Oct. 25, 1962; Dec. 10, 1962; March 4, 1963], No. 18551/63. Headings F2B and F2G. A gasket comprises a packing 7 of rubber or like material, Fig. 2, located between concentric rings 6, 8, the height of the packing being slightly greater than that of the rings 6, 8, and the inner ring 8 being split so that it is capable of expanding the elastic ring on to the outer ring 6. As applied in a pipe butt joint, Fig. 4 (not shown), the gasket is modified in that the ring 6 is replaced by the inner peripheral wall surface 9 of a recess in the end of one of the pipes. In another pipe joint, Fig. 5 (not shown), the gasket is modified by reversing the positions of the inner and outer rings and constituting the inner ring by an annular collar 16 on the end of one of the pipes.
Patent GB-736924-A (GB)
Title: A spring suspension device
IPC: B60G17/00
Filed: 1953-07-03
Abstract: 736,924. Springs; adjusting height of vehicle. GAEBLER, G. A. July 3, 1953 [July 4, 1952], No. 18565/53. Classes 108 (2) and 108 (3). In a spring-suspension device which is selfadjusting in dependence upon load, the spring rate of the device is controllable by means adapted to vary the temperature of the spring medium of the device. As applied to vehicle suspensions, the spring medium is a gaseous fluid, and the temperature-varying means comprises an electric immersion heater. The heater circuit is switched on and off by pneumatically or electrically operated means, in dependence on either the pressure of the fluid or the deflection of the device. The invention is also applicable when the spring medium is a solid body or a liquid. Specification 737,144 is referred to.
Patent GB-659967-A (GB)
Title: Improvements in lawn mowers
IPC: A01D69/02
Filed: 1949-07-15
Abstract: 659,967. Electric motor driving arrangements. SEWELL, E. A. July 15, 1949, No. 18660. [Class 35] [Also in Group I] An electric lawn-mower comprises an electric motor wherein the outer part or " stator " 4 is incorporated in the roller 1 to rotate therewith and the inner part or " rotor " 6 rotates about the axes of the roller and independently thereof. According to the present invention, the inner part 6 drives a rotary cutter-shaft 9 through chain and sprocket gearing 7, 8 and the rotary cutter shaft 9 drives the roller 1 through chain and sprocket gearing 10, 11. The roller and cutter may rotate in opposite directions by substituting gear-wheels for transmitting the drive. A battery for driving the motor is mounted on the frame of the mower, preferably above the roller, and the connection to the motor comprises a contact-ring and brush. The motor is operated by a switch controlled by a Bowden wire.
Patent GB-633891-A (GB)
Title: Improvements in and relating to calcium phosphate phosphors
IPC: C09K11/77
Filed: 1947-07-14
Abstract: 633,891. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. July 14, 1947, No. 18668. Convention date, July 15, 1946. [Class 39 (i)] A luminescent material consists of calcium phosphate activated by both cerium and thorium. The thorium may be present as from .01-20 per cent ThO2 and the cerium as from 1-20 per cent of the phosphate. Calcium nitrate, cerium nitrate and thorium nitrate are dissolved in distilled water and brought to boiling and ammonium nitrate added. The gelatinous precipitate is filtered, dried and fired in a reducing atmosphere at 1250‹ C. for one hour. The phosphor emits long U.V. radiation when excited by short U.V. radiation and is used for blue-printing and for exciting other phosphors. Calcium phosphates activated by cerium and one of the metals manganese, aluminium, lanthanum; titanium and zirconium are referred to. Specification 550,744 is referred to.
Patent GB-1516069-A (GB)
Title: Apparatus for playing a board game
IPC: A63F3/02
Filed: 1977-05-04
Abstract: 1516069 Board game J B McCARTHY 4 May 1977 [6 May 1976] 18696/77 Heading A6H A board for a board game comprises rows of triangular-shaped holes 3 to receive triangular counters 4 to fit the holes either way up. There are 20 counters. One side of each end hole 3 is coded with one or two holes 9.
Patent GB-315558-A (GB)
Title: Improvements in and relating to grabs
IPC: B66C3/12
Filed: 1928-06-27
Abstract: 315,558. Shevlin, J. T., (Soc. Anon. Ceretti & Tanfani). June 27, 1928. Arrangements of winding and paying-out apparatus acting through two or more ropes for performing alternative operations; regulating and control-transmitting gear.-Relates to a single-lever control for the drums operating a double-rope grab. The two ropes of the grab are wound on drums driven from a single countershaft. The hoisting drum is driven through a clutch and the driven member of the clutch is provided with a band-brake for holding the drum. In one form, the control mechanism comprises two counterweighted levers C, C<1>, Figs. 5 - - 8, pivoted at Q, Q' and connected with the clutch and brake respectively by links I, N. These levers are operated by stops R, R<1> on sectors S, S<1> which are pivoted at Q, Q<1> and engage one another with frictional contact. The two sectors are connected by a slotted link V permitting lost motion. One of the sectors S is connected by linkage not shown with a control lever. The lever works in a gate, and is pivoted to move in two planes at right angles. Movements in one plane engage and disengage bevel gearing for driving the winch in either direction, and movements in the other plane bring the clutch and brake controls into the different positions shown in Figs. 5 - - 8. In Fig. 5 the brake is on and the clutch engaged, the control lever being in mid-position ; in Fig. 6, the brake is off and the clutch engaged for lowering or raising the grab; in Fig. 8, the brake is on and the clutch disengaged for opening the suspended grab; in Fig. 7, the brake is off and the clutch disengaged for closing the grab whilst resting on the spoil. With the lever L in the midposition in the gate, the winch is not driven and the lever can be moved to and fro for lowering or opening the grab under its own weight. In another form, Figs. 9 - - 15 (not shown), the counterweighted levers C, C' are provided with cam surfaces engaged by rollers on a rod or rods moved longitudinally by the control lever to bring the levers C, C' into positions corresponding with those shown in Figs. 5 - - 8. In both forms the counterweights may be replaced by springs, dashpots, &c. In another form, Fig. 18, counterweighted levers C, C<1> connected with the clutch and brake are operated by eccentrics R, R', R<2> on a shaft M which is turned by gearing T', T, S<1> and a sector S on the control lever L. In another form, cams such as R, R', R<2>, are mounted on spindles transverse to the levers C, C', and a single rod moved longitudinally by the control levers operates the three cams. Electric motor controllers; valves, actuating. -In the form described with reference to Figs. 9 - - 15 (not shown) the lever L pivoted in two directions, works in a gate, and by its lateral movements engages one or other of the two sectors D<1>, D", Fig. 10, for controlling an electric or fluid-pressure. motor driving the winch.
Patent GB-1377574-A (GB)
Title: Apparatus for determining the direction of propagation of a plane wave
IPC: G01S3/80
Filed: 1972-04-21
Abstract: 1377574 Radio direction-finders COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CITALCATEL 21 April 1972 [21 April 1971] 18708/72 Heading H4D A direction finder comprises detectors on an arc of a circle and coupled to a digital network comprising encoders, one for each detector, and a chain of adders and shift registers. If a plane wave front 8 arrives along direction 7 detector 1 gives the first output which is converted to a binary code at 11 corresponding to the detector. A clock 26 enables multiplexers 21 to 25 so that the signal from coder 11 is passed through multiplexer 21 and then to adder 31. Shift register 36 delays the signal from adder 31 by a period equal to the time for the wave to reach the next detector. The signal from the next detector therefore arrives at adder 32 coincidently with the signal from the first detector. These are added and passed down the chain and the process repeated for each subsequent detector so that the output is the sum of the coded signals from the detectors corresponding to direction 7. Other directions will give different summations. The chain can simultaneously handle information corresponding to several different directions.
Patent GB-404301-A (GB)
Title: Improvements in apparatus for distributing seed, manure and the like
IPC: A01C7/08
Filed: 1932-07-02
Abstract: 404,301. Distributers for seeds, manure, &c. McGLASHAN, T., 75, Harrowby Road, Grantham, Lincolnshire. July 2, 1932, No. 18709. [Class 6 (i).] In apparatus for distributing seed, manure, and the like of the type in which rotatable distributing wheels a having peripheral grooves or flutes f to carry the seed from the hoppers of the feed box or boxes to the hoppers of the distributing coulters or the like and in which the capacity of the grooves or flutes is adjustable to regulate the feed by relative axial adjustment between the seed distributing wheels and a member g constituting one end wall of each of the compartments formed by the grooves or flutes, a sliding clutch i, k is provided between each distributing wheel and the driving spindle b therefor, the sliding clutch having manually operable means carried entirely by the driving spindle for positively shifting the slidable clutch member i to effect engagement or disengagement of the clutch against the action of a spring l, so that one or more of the seed distributers may be cut out. The distributing wheels a are rotatably mounted on the driving spindle b, which is of square cross section, by collars m, y. The sliding clutch member i is normally held out of engagement with the clutch dogs k on the distributing wheels by the spring l bearing on the collar m, axial movement of the distributing wheels being prevented by a pin x passing through the spindle b, but is moved into engagement therewith by turning a double L-shaped or U-shaped actuating pin, the centre limb o of which passes radially through the spindle b, so that the limbs p, of the pin are parallel with the axis of the spindle b. The clutch is disengaged by turning the actuating pin so that the limbs p, q are at right angles to the axis of the spindle b. The actuating pin may be manipulated by means of a tool, s, Fig. 5.
Patent GB-1070283-A (GB)
Title: Improvements in a wrapping machine for chocolate-bars
IPC: A23G7/00
Filed: 1964-05-06
Abstract: 1,070,283. Wrapping bars of chocolate; feeding magazines; endless conveyers. OTTO HANSEL G.m.b.H. May 6, 1964 [May 9, 1963; July 15, 1963], No. 18741/64. Headings B8C and B8S. General arrangement.-Chocolate bars are wrapped individually, counted and divided into groups to produce packages containing a predetermined number of bars. In the form shown (Fig. 1), bars are fed from a conveyer 3 to one or more conveyers 4, under the control of a photo-cell 12 and are taken by conveyer 11 to a wrapping station 14 where they are conventionally wrapped. Means are included to automatically change rollers containing wrapping material. They are then lifted to a table 32), (Fig. 3, not shown) and moved forward (to the left in Fig. 3) by a gripper (34). The individual bars (31) are then swung by a device 17 (Fig. 1) through 90 degrees to a presser channel (36), (Fig. 7, not shown) where brushes (39) grip the bars and a resilient pawl holds the bars. Any air in the wrapper is removed and the folded and glued edges are pressed together. After counting the bars are batched and placed into cartons. Conveying the chocolate bars to the counting device.-At the exit end of the channel, brushes (40) (Fig. 7, not shown) align the chocolate bars. A segment (46) moves axially and rotationally so that grippers (47, 59 and 60) on it move in a closed path to rotate the bar through 180 degrees. Removal of faulty or improperly wrapped bars.-An X-ray or magnetic device 5 on the conveyer 4 detects foreign bodies in bars, faulty bars 7 being removed. A blower nozzle (62) (Fig. 3, not shown) raises faulty wrappers and an optical device (61) detects incorrectly positioned wrappers, defective bars being removed by a piston (63). Adjustable counting and batching device, filling cartons.-The bars are counted by an adjustable counter (67) (Fig. 9, not shown) and are then fed singly by an oscillating arm (70) along a curved shoot (69), lined with brushes. When a predetermined number have been fed in front of a piston (91) the counter causes the arm (70) to perform smaller strokes so that three bars are stored as shown in broken lines in Fig. 9 until the piston (91) has pushed the preceding batch into a carton (68). Feeding cartons, inserts, closing cartons.-A carton 23 (Fig. 1) is swung to the feeding position and then returned to its original position where labels may be inserted at 26, the cover closed at 27 and the carton removed by a conveyer.
Patent GB-1249790-A (GB)
Title: Ammunition for fastener driving tool
IPC: B25C1/18
Filed: 1968-09-03
Abstract: 1,249,790. Cartridge-fired studs. TRW Inc. 3 Sept., 1968 [1 Sept., 1967], No. 18774/71. Divided out of 1,247,677. Heading F3A. [Also in Division F2] An ammunition round for use in a fastener driving tool disclosed in Specification 1,247,677 (see Division B4) comprises a primer 18, a propellant charge 14, a fastener 12, a sleeve 22 and an enveloping casing 30. The head 32 of the fastener includes radially projecting, longitudinally extending ribs 38 which engage in complementary longitudinal recesses 26 in the sleeve. The head is joined to a screw-threaded portion by a reduced diameter portion 34.
Patent GB-225173-A (GB)
Title: Improvements in magazine lead pencil holders
IPC: B43K21/08
Filed: 1924-08-07
Abstract: 225,173. Bauer, C. P., (Assignee of Fend Ges., Geb.). Nov. 23, 1923, [Convention date]. Pencil hodders. - In a pencil holder, the feed-member for the lead co-operates by means of a screw-thread with the. lead-guide, and engages with the inner of two telescoping cases so that rotation of the inner case, irrespective of its position in the outer case, effects the propulsion of the lead. Fixed in the forward end of the outer case a is a lead-guide b fitted with a steel point c adapted to grip the lead, and provided with a screw-threaded bore engaged by the screw-threaded propaler rod k. The rear end of the rod k is flattened and arranged in a sleeve h of oval cross-section, the smaller diameter of which is less than the width of the flattened portion of the rod. The sleeve h is fitted in a case e slidably and rotatably mounted in the outer case a. The case e is closed at its forward end except for an aperture for the rod k, and the space between the case and the sleeve h serves for the reception of space leads, the rear end being closed by a cap g. The case e can be withdrawn from the case a as far as allowed by the flattened head of the propeller rod to lengthen the case. The front end of the rod k may be fitted with a tubular sleeve or grip to receive the lead. The Specification as open to inspection under Sect. 91 (3) (a) states also that the outer case may be in the form of a series of telescoping concentric tubes, each of which is graduated, so that they may be extended to form a rule. The leadguide may be made of solid metal such as aluminium, or may be built up of parts comprising a nut and a tubular guide connecting the nut with the point c. A pocket clip is attached to a reduced part of the case e. This subject-matter does not appear in the Specification as accepted.
Patent GB-459057-A (GB)
Title: Improvements connected with needle holding handles for repairing knitted fabrics
IPC: D04B17/04
Filed: 1935-07-01
Abstract: 459,057. Darning. VITOUX, M., 36, rue Ambroise- Cottet, Troyes, Aube, France.- (Assignee of Soc. Vitos; 42, Rue de la Paix, Troyes, Aube, France) July 1, 1935, No. 18823. Convention date, June 30, 1934. Addition to 324,607, [Class 122]. [Class 112] A handle of the kind described in the parent Specification for holding needles for repairing ladders in knit goods is provided with a piston with oppositely disposed leather washers 13, 18 so that the needle may be operated in both directions by the alternating air pressure and vacuum. Springs 15, 16 are arranged in opposition and a slow leak in the air system is provided by an orifice 19 to secure that a shortage or an excess of air in the driving system shall not displace the mean position of the piston.
Patent GB-1415668-A (GB)
Title: Catalyst treatment
IPC: C07C67/00
Filed: 1972-04-24
Abstract: 1415668 Silica IMPERIAL CHEMICAL INDUSTRIES Ltd 30 March 1973 [24 April 1972] 18824/72 Heading C1A [Also in Divisions B1 and C5] Beads comprising silica, for example silicaalumina beads containing 1 to 40% wt. alumina, and which are susceptible to damage by exposure to aqueous liquid are conditioned in order to strengthen them by (a) exposing to steam at less than the saturated vapour pressure, (b) contacting with an aqueous liquid and (c) drying, at least initially, in steam. The drying may be effected in superheated steam followed by calcination in air. The beads before conditioning suitably have a surface area of 200- 700 m.<SP>2</SP>/g. and a mean pore diameter of at least 10. The example relates to a silica/alumina beads containing 10% wt. alumina.
Patent GB-322455-A (GB)
Title: A new or improved method and apparatus for the manufacture of hollow rubber or ebonite moulded goods
IPC: B29C69/00
Filed: 1929-04-29
Abstract: 322,455. Macintosh & Co., Ltd., C., Young, H. C., and Hemm, C. April 29, 1929. Moulding hollow rubber balls.-In the manufacture of hollow rubber or ebonite goods from sheet stock by the use of two vented mould parts co-operating with a sealing-member having provision for the introduction of air under pressure, the exhaust of the air from the mould is restricted to create a cushioning effect and ensure even seating of the stock. As shown, the two mould parts 2 co-operating with a sealing-ring 3 having an air inlet 5, are finished with vents 7 communicating with chambers 9 fitted with spring loaded non-return valves 10 which impose a restriction and ensure even seating and, further, maintain a suction upon the stock during the separation of the mould parts for withdrawal of the ring 3.
Patent GB-940748-A (GB)
Title: Improvements in and relating to the production of flexible printing plates
IPC: B32B37/00
Filed: 1961-05-26
Abstract: 940,748. Printing surfaces. H. R. J. SWIFT, J. C. AGER, and R. C. AGER. May 28, 1962 [May 26, 1961], No. 19099/61. Heading B6C. A flexible printing plate is produced by engraving a design on a laminated flexible rubber master, stripping the waste material about the design down to the layer beneath, moulding a rigid matrix from thermosetting material on said design, and moulding the flexible printing plate on the rigid matrix. The flexible master comprises sheets 1 and 3 of synthetic rubber with a central control sheet 2 of resin-impregnated cloth. A further control sheet 4 may be attached beneath the sheet 3. The above assembly is vulcanised under heat and pressure and the upstanding design 5 is engraved by hand. A phenolic resin is poured from a container 15 over and around the design and after the resin has been allowed to set it is heated and then allowed to cool to form a rigid matrix. Rubber is laid on the matrix and the assembly subjected to heat and pressure to produce a flexible stereo printing plate. The design 5 may be produced with the laminated master stretched round a cylinder.
Patent GB-147098-A (GB)
Title: Travelling coke loading device
IPC: C10B39/04
Filed: 1920-07-07
Abstract: 147,098. Still, C., [Firm of]. Sept. 14, 1917, [Convention date]. Material moved over flat surface into receptacle by scraper bar.-- The apparatus for transferring and screening coke described in Specification 147,097 is modified by arranging the travelling screening device a to travel on the quenching platform l. The screening device comprises a screen r mounted on a wheeled box-like receptacle, the outer wheels cf which are flanged and travel on a rail at the edge of the platform. Ramps g, s direct the coke on to the screen and into the truck w, respectively. The bottom j of the receptacle may be opened to discharge the contents. Specification 7364/15 also is referred to.
Patent GB-458273-A (GB)
Title: Improvements in and relating to lawn mowers
IPC: A01D34/42
Filed: 1935-07-04
Abstract: 458,273. Lawn-mowers. CARDWELL, S. O., Ribble Cottage, Hampton, Herne Bay. July 4, 1935, No. 19177. [Class 6 (ii)] The sole plate carrying the ledger blade e of a lawn mower is mounted at its ends in bearings j controlled by springs and is also provided with a rearward extension which is acted upon by a single adjusting screw. The ends of the sole plate g are formed as trunnions g<1> which pass through slots in brackets secured to the side plates b of the machine and enter the bearings j which are formed in the enlarged lower ends of pins j<1> extending upwardly through sleeves k screwed into lugs l projecting from the side cheeks b of the machine, the upper ends of these sleeves being squared to facilitate their adjustment in the lugs and lock nuts k<2> being provided to secure them in adjusted position. The pins j<1> are provided with milled nuts j<2> between which and the sleeves k compression springs m are arranged. An adjusting screw n<3> passing through a threaded lug n<1> carried by a fixed stay rod bears against a bracket g<2> projecting from the sole plate. The nuts j<2> are adjusted to set the ledger blade along the length of the rotary blades and then the screw n<3> is used to set the ledger blade against the rotary blades, being clamped in position by a locking nut. The end of the ledger blade is provided with guiding lugs o for the advancing ends of the knives.
Patent GB-124535-A (GB)
Title: Improvements in Motor Driven Vehicles.
IPC: B62M9/00
Filed: 1917-12-28
Abstract: 124,535. Portland Engineering & Traction Co., Williamson, J., and Munby, A. E. Dec. 28, 1917. Foot-cycles; spring devices.-A motordriven scooter has each platform o suspended from a laminated spring f which at one end is secured to t.he engine casing a and at its other end slides in a socket g attached to the rear-wheel axle. Adjustable links 8 form an additional connexion between the axle and the engine casing, which is extended to constitute the main portion of the frame. The front-wheel fork is formed of leaf springs p with curved ends carrying the axle.