baber/WOPTO huggingface dataset:
Patent GB-583837-A (GB)
Title: Improvements in brake operating means
IPC: B62D11/08
Filed: 1940-03-04
Abstract: 583,837. Steering vehicles by differential braking. ENGLISH ELECTRIC CO., Ltd., MARDIS, P. L., and WILSON, F. March 4, 1940, No. 4009. [Classes 79 (ii) and 79 (v)] A vehicle or machine having two fluidpressure-actuated brakes is provided with a selective control member operable by the driver in one way or another to apply one brake or the other, and a common control member operable by the driver to apply both brakes irrespective of the position of the selective control member. In the construction shown the brakes are applied by means of valves 5, 9 controlled by levers 15, 8 respectively connected by links 14, 12 through lost-motion connections 14a, 12a to a member 10 loose on a shaft 2. Thus when the member 10 is rotated, in one direction or the other, by means of a steering hand-wheel 23, one of the links 14, 12 is pulled and its valve is operated to apply the corresponding brake, while the lost-motion connection in the other link leaves this link unaffected. The valve levers 15, 8 are also connected, by links 3, 7 having lost-motion connections 3a, 7a; to a lever 1 fixed on the shaft 2 and controlled by a pedal 20. When the pedal is depressed the shaft is rotated, both links 3, 7 are pulled and the valves are operated to apply both brakes simultaneously. The lost-motion connections in the four links allow the brakes to be applied equally by the pedal even if one brake has already been applied by the hand-wheel 23. The hand-wheel is geared to a sleeve 17 loose on the shaft 2 and carrying a forked arm 16 connected to a projection 10c on the loose member 10 through adjustable tappets 18, 19.
Patent GB-758593-A (GB)
Title: Improvements in friction drive screw presses
Inventor: CHALLEN JOHN BERNARD
IPC: B30B1/22
Filed: 1954-02-12
Abstract: 758,593. Screw presses. TAYLOR & CHALLEN, Ltd. Feb. 14, 1955 [Feb. 12, 1954], No. 4138/54. Class 87(2) The downward movement of a screw press is initiated by movement of a hand lever 1 which through movement of lever 3 and bell-crank lever 4 causes a clutch mechanism driven by a pinion 9 to rock a lever 17 and move the appropriate friction disc into engagement with the flywheel: Movement of the clutch mechanism into the position to initiate downward movement is prevented, until the lever 1 is moved, by a nose 22 on a lever 21 connected to the lever 1 by a link 20. The lever 17 is rocked by a Y lever 15 which is itself rocked by the frame 7 of the clutch mechanism. The frame 7 is rocked by tightening a band 10 about either one oi two drums 8 driven in opposite directions by the pinion 9. The lever 15 is provided with spring loaded plungers 19 to reduce shock in the transmission of the rocking movement. Specification 705,710 is referred to.
Patent GB-233455-A (GB)
Title: Improvements in plain and reinforced concrete structures
IPC: E04C2/04
Filed: 1924-02-18
Abstract: 233,455. Davies, P. Feb. 18, 1924. Reinforced concrete; reinforced-concrete beams.- Concrete structures, beams and other structural members, and road foundations, either reinforced or not are provided with two or more rows of solid blocks B of stone, slag, or similar hard material embedded in the concrete and overlapped or bonded to form in effect a continuous layer.
Patent GB-802333-A (GB)
Title: Improvements in or relating to electrically heated thermostatically controllable containers
Inventor: FEWINGS DAVID JOHN
IPC: G05D23/275
Filed: 1956-02-10
Abstract: 802,333. Automatic temperature control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 24, 1956 [Feb. 10, 1956], No. 4222/56. Class 38 (4). [Also in Groups XI, XIII and XXXVII] An oven or container 1, e.g. for a piezoelectric crystal is in good heat-conducting relation with a surrounding solid 2 having a melting-point at a predetermined desired temperature, e.g. naphthalene placed within an external jacket 3 heated by a resistance winding 12 within or wound on the jacket which has a flexible wall e.g. a bellows 16 operating on change of volume of the solid on melting or solidifying a switch 10 controlling the heater 12. The flexible wall however may be an end wall of the jacket and form a wall of an oil-filled secondary chamber from which extends a deformable hollow member or bellows of small cross section arranged to operate the switch. As shown, the tubular bellows 16 projecting into the jacket 3 is connected at its outer end 21 to the jacket and at its inner end to a flange on a metal tube 17 communicating with the jacket and closed at its outer end by a plug 18. On expansion of the naphthalene on melting, a plug 18 closing the outer end of the tube 17 moves therewith against an operating member 10 of a switch 11 controlling the heater 12 and a heating winding 112 on the tube 17 in series with the heater 12. The switch 11 is carried by an arm 22 pivoted on a screw 23 on a bracket 24 carried by an end cover 19 on the jacket. A strip spring 26 urges the switch towards the end plug 18, its forward movement being limited by a stop screw 25. The spring allows the switch to move backwards after its operation by the plug 18 on continued movement of the latter. The container 1 is of thick metal to provide thermal inertia and is mounted on the jacket by a ring 4 of heat-insulating material. The jacket 3 is of thick metal if the heater is wound thereon but is of heat-insulating material if the heater is mounted within it.
Patent GB-1160596-A (GB)
Title: Improvements in or relating to Indian Ink Styli
IPC: B43K1/10
Filed: 1967-01-27
Abstract: 1,160,596. Pens. J. S. STAEDTLER. 27 Jan., 1967 [29 Jan., 1966], No. 4235/67. Heading B6P. The tubular point of a drawing pen is made of hardenable steel or steel alloy having titanium carbide bonded into its crystalline structure. Up to 50% of titanium carbide may be employed. A movable pin may be mounted within the tube. The steel may be a chromium molybdenum carbon steel alloy. Reference has been directed by the Comptroller to Specification 1,051,009.
Patent GB-433458-A (GB)
Title: Improvements relating to electro-magnetic separators
IPC: B03C1/28
Filed: 1934-02-09
Abstract: 433,458. Magnetic separators. ELECTROMAGNETS, Ltd., and BOX, W. E., 2, Church Street, Colmore Row, Birmingham. Feb. 9, 1934, No. 4291. [Class 72] In a magnetic separator of the trough or tray type, inclined flaps or baffles 8 of para- or dia-magnetic materials are arranged above pole pieces 6 of electromagnets 5 so as to intercept pieces of material which may ricochet from one of the polepieces. The flaps or baffles 8 are pivotally mounted on pins 7 and rest on supports 9 which are carried by pins 9<a> and can be locked in any desired position. The lower edges of the flaps or baffles may be serrated.
Patent GB-1058193-A (GB)
Title: -a-carboline derivatives
Inventor: SPICKETT ROBERT GEOFFREY WILLI
IPC: C07D471/04
Filed: 1963-02-01
Abstract: The invention comprises compounds of the general formula <FORM:1058193/C2/1> and pharmaceutically acceptable acid addition salts thereof, wherein R1 is lower alkyl containing 1-4 carbon atoms or aralkyl, R2 is lower alkyl containing 1-4 carbon atoms and n is 2, 3 or 4, and the preparation thereof by reacting an alkali metal salt of a gammacarboline represented by the general formula <FORM:1058193/C2/2> with a reactive halogen compound of the general formula <FORM:1058193/C2/3> wherein X is halogen and, if desired, converting the resulting compound into a pharmaceutically acceptable acid addition salt thereof by treatment with the appropriate acid.
Patent GB-908582-A (GB)
Title: Improvements in or relating to screens for electric furnaces
Inventor: DOVEY DOUGLAS MARSHALL
IPC: F27B5/04
Filed: 1960-02-08
Abstract: 908,582. Charge screens for electric furnaces. GENERAL ELECTRIC CO. Ltd. Feb. 8, 1961 [Feb. 8, 1960], No. 4365/60. Class 51 (2). An internal screen to surround the charge and heating elements of an electric furnace comprises an inner shell 1 and a perforated outer shell 2 together forming an annular space 5 which is filled by heat insulating material such as lamp black, graphite powder, graphite fibre in the form of cloth or graphitized cotton wool. The inner shell 1 may be formed of abutting graphite sheets as described in Specification 904,377 and the outer shell 2 is of fine metal mesh to allow degassing in a vacuum furnace. Annular end plates 3 close the ends of the space 5, and may extend beyond the outer shell 2 to form a trough for escaping graphite powder. A third shell 6 of sheet metal surrounds the screen, and is connected to the end plates 3. The ends of the enclosure are closed by overlapping graphite slabs, or by hollow end shields filled with insulating material.
Patent GB-195358-A (GB)
Title: Improvements in hydraulic couplings and change speed gears
IPC: F16H39/24
Filed: 1923-02-14
Abstract: 195,358. Wingquist, S. G. March 23, 1922, [Convention date]. Addition to 189,110. Clutches and speed-varying mechanism.-The hydraulic coupling and variable-speed gear of the parent Specification is modified by the prevision of an auxiliary valve 17 for controlling the operation of the control valve 12. In the position shown, both valves have been moved outwards by centrifugal force, the valve 12 closes communication between the chambers 10, 11 and the direct drive is in operation, the pressure in the chamber 10 acting on the outer end of the valve 12 through a channel 16, and also on its inner end through passages 20, 19, 21, 25. When the pressure in the chamber 10 increases, it acts on the end 18 of the valve 17 to move it inwards against the action of centrifugal force, this movement of the valve putting a chamber 13 into communication with the suction chamber of the gear through passages 29, 28, 26, 27; the pressure on the outer end consequently moves the valve 12 inwards to open communication between the chambers 10, 11, and establish a transmission ratio.
Patent GB-453261-A (GB)
Title: Improvements in or relating to circuit arrangements for suppressing disturbances in wireless receiving sets
IPC: H03G11/00
Filed: 1936-02-13
Abstract: 453,261. Wireless receiving systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Feb. 13, 1936, No. 4433. Convention date, April 13, 1935. [Class 40 (v)] The low-frequency amplifier of a wireless receiver is disabled for the duration of a disturbing impulse by an electrical or mechanical switch device connected at a point lying before the final amplifying valve at which no direct voltages or currents are present. In one embodiment, Fig. 1, a relay R, operated by a rectifier 7 fed from a coil L coupled to the input of the signal detector 3, breaks the connection between the grid of a low frequency amplifier 5 and its feed condenser C1 when disturbances of greater than a predetermined amplitude are received. Alternatively the relay R may short-circuit the grid resistance R2. The relay R may be operated by an auxiliary receiver tuned to a frequency adjacent that of the main receiver. In a further embodiment disturbances received on an auxiliary receiver 8, 9, 10, Fig. 3, operate a glow discharge tube G arranged to reduce the resistance of a selenium cell L forming part of a potential divider L, R4 in the grid circuit of the valve 5. Disturbances received on the auxiliary receiver 8, 9, 10, Fig. 4, may control the alternating current resistance of a dynatron valve 11, forming part of a potential divider 11, R5, in the grid circuit of valve 5, in such a way that the signal across R5 is reduced when a disturbance renders the grid 12 of valve 11 more negative.
Patent GB-847247-A (GB)
Title: Improvements in or relating to package and the like protective devices
IPC: B65D81/05
Filed: 1957-02-08
Abstract: 847,247. Corner protectors for packages. BREHMER FOLDING BOX CO. Ltd., and THOMPSON, H. H. Jan. 31, 1958 [Feb. 8, 1957], No. 4451/57. Class 94(1). A corner protector for packages, articles on pallets, &c. consists of a strip of corrugated
Patent GB-1445822-A (GB)
Title: Pipe couplings
IPC: F16L47/10
Filed: 1974-01-31
Abstract: 1445822 Pipe couplings; pipe end caps NAYLOR BROS (CLAYWARE) Ltd 17 Jan 1975 [31 Jan 1974.] 04552/74 Headings F2G and F2P A pipe coupling (Fig. 1) comprises a tubular open-ended sleeve 2 of synthetic plastics, several tongues 14 being provided at at least one end of the sleeve, and a clamping ring 18 formed with apertures 22 in which the tongues 14 extend, the tongues having projections 16 arranged to resist dislodgement of the clamping ring from the sleeve when the coupling is in use. A sealing ring 44 of rubber or other elastomeric material for engagement with a pipe is trapped in the sleeve 2 between the sleeve 2 and the clamping ring 18. The projections 16 may be countersunk in the clamping ring, engaging notches 24 or internal shoulders in the apertures, or they may extend beyond the outer face of the radial wall 20 of the clamping ring, the projections engaging the wall. The tongues 14 and/or the clamping ring 18 may be resiliently deformable to allow push fitting, both sleeve 2 and ring 18 being made of, e.g. polypropylene copolymer, or polypropylene, acrylonitrile - butadiene - styrene, unmodified or modified "rigid" polyvinyl chloride, polycarbonate, polyacetal or polyethylene. An alternative pipe coupling has one end as above but the other has a transverse wall provided with a hole fitted with a rubber grommet to receive a smaller diameter pipe. If the transverse wall has no opening, a pipe end cap is produced.
Patent GB-361740-A (GB)
Title: Improved means for detachably securing articles to metal plates and the like
IPC: A44B17/00
Filed: 1931-02-14
Abstract: 361,740. Press-button fasteners. FRAY, B. G., 36, Albion Street, Birming- ham. Feb. 14, 1931, No. 4688. [Class 44.] A device applicable generally for detachably securing articles to metal plate and other surfaces, and particularly suitable for securing badges, caps, &c. to motor cars, comprises an attachment member c brazed or otherwise secured to the badge &c. a and having curved tongues e adapted to snap behind the edge or margin of an aperture or recess in the plate &c. b. A spring ring f retained within the curved ends of the tongues is used to give the requisite resiliency. One end of the ring may be anchored in one of the tongues. The aperture may have a curved lip g or flange.
Patent GB-938068-A (GB)
Title: Polymerisation process
IPC: C08F283/01
Filed: 1962-02-07
Abstract: Ethylenically unsaturated compounds are polymerized in the presence of a redox polymerization accelerator which comprises an oxidative component and a sulphur compound of formula Me-S-(CH2)n-COOR, Me1[-S-(CH2)n-COOR]2, Me-S-(CH2)n-O-CO-R or Me1[-S-(CH2)n-O-CO-R]2 where Me is a monovalent metal and Me1 is a divalent metal of Group Ib or IIb of the Mendel<\>eeff Periodic System, R is an alkyl, aryl or aralkyl group and n is an integer from 1 to 4.  The unsaturated compounds may be styrenes, vinyl esters, the esters, amides and nitriles of acrylic and methacrylic acids, and unsaturated polyesters.  The oxidative component may be benzoyl peroxide, lauroyl peroxide, cumene hydroperoxide, butyl hydroperoxide, di-tert-butyl di perphthalate or mono-tert-butyl permaleate. Preferred sulphur compounds are the cadmium and zinc mercaptides of thioglycollic acid esters.  The unsaturated compound may be polymerized in the presence of a preformed polymer, the sulphur compound being dissolved in the monomer or a plasticizer, and the oxidative component mixed with the polymer.  Examples describe (1) the polymerization of methyl methacrylate in the presence of polymethyl methacrylate, mono-tert-butyl permaleate and the cadmium and zinc mercaptides of 2-ethylhexyl thioglycollate, the cadmium mercaptide of butyl thioglycollate, and the cadmium mercaptide of b -mercaptoethyl isobutyrate; and the polymerization in the presence of mono-tert-butyl permaleate and the cadmium mercaptide of 2-ethylhexyl thioglycollate of (2) methyl methacrylate and (3) a mixture of styrene and ethylene glycol maleate polyester.  The accelerators may be used in dentistry.
Patent GB-373135-A (GB)
Title: Improvements in and relating to transmission systems for picture telegraphs and the like
IPC: H04N1/00
Filed: 1931-02-14
Abstract: 373,135. Copying-telegraphy; valve modulating circuits. LORENZ AKT.- GES., C., 1, Lorenzweg, Tempelhof, Berlin. Feb. 14, 1931, No. 4741. Convention date, Feb. 15, 1930. [Classes 40 (iii) and 40 (v).] In a system for picture telegraphy, long distance recording and the like, the signal currents are conveyed as alternating current impulses from the translating apparatus to the transmitting station where, after rectification, they are supplied to the transmitter as direct current impulses, and at the receiving end the signals are carried as alternating current impulses from the receiving station to the retranslating apparatus where they are rectified and supplied to the reproducing instrument as direct current impulses. The picture currents obtained from a photo-electric cell Ph, by a light-source L1, are amplified and converted by the converter U1 into alternating current impulses of a definite frequency for transmission over a cable K1 to the transmitting station. The impulses are rectified by an arrangement Gl1, preferably incorporating a filter and choke, and are supplied as direct current impulses to a high frequency transmitter Se. At the receiving end E, the signal input is rectified and supplied to a converter U2 from which impulses of alternating current of a desired frequency are transmitted over a cable K2 to a rectifying device Gl2 at the reproducing station. The direct current impulses are there applied to a string galvanometer F controlling the incidence of a light beam from a source L2 on a receiving drum W2. A circuit arrangement for the converter devices U1, U2 is shown in Fig. 2. The direct current impulses from the photo-cell Ph are amplified by a valve R1 and applied through a resistance R to render operative a valve R2, normally biased to be inoperative and having in its grid circuit the secondary winding of a transformer T, whose primary winding is supplied with alternating current of the frequency desired, say 4000 cycles, for the impulse transmission over the cables K1, K2.
Patent GB-765257-A (GB)
Title: Pulverizing mills
IPC: B02C19/06
Filed: 1955-02-17
Abstract: 765,257. Jet pulverizers. TROST, C. M. Feb. 17, 1955, No. 4790/55. Class 59 A method of pulverizing material comprises directing a pair of pressure fluid streams of unequal strength coaxially towards each other, entraining the material to be pulverized into the weaker of said streams, passing all the fluid from both streams together with the entrained material in uni-directional flow through a paritally curvilinear path, withdrawing from said path intermediate the ends thereof a portion of the fluid and entrained particles, and aspirating the remainder of said fluid and entrained particles moving along said path into the stronger of said streams. The apparatus shown for carrying out the method comprises a grinding compartment 1 having at opposite ends thereof coaxial jets 7, 12 for directing two pressure fluid streams towards each other, the stream from the jet 12, which is weaker than that from the jet 7, entraining material from a supply hopper 11. The stream from the jet 12 with its entrained material passes through a venturi opening 10 and strikes the stream from the jet 7, which has passed through an opening in an adjustable block 16, in a grinding chamber 5. The fluid from both streams together with the entrained material passes into the inlet end 31 of the passageway 33 of a classifier 2, which preferably is of varying trapezoidal cross-section, and material of the desired fineness is carried through an outlet opening 36, the remainder of the material being carried by the fluid stream through the discharge end 32 of the classifier and aspirated by the jet 7 into the return chamber 18 of the grinding compartment 1. The cross-sectional area of the passageway 33 may be reduced towards the curvilinear portion of the classifier by means of a restrictor 22. In a modification (Fig. 8, not shown), material to be pulverized is introduced into the grinding chamber from each end by means of a jet and venturi opening, the intermediate block 16 being omitted. In another modification (Figs. 9 to 12, not shown), in which the intermediate block is also omitted, the primary and secondary fluids are each introduced into the grinding chamber through a plurality of jets and a tertiary grinding fluid is introduced into the grinding chamber in association with the secondary grinding fluid. In a further modification (Fig. 13, not shown), the classifier, which has the shape of an elongated loop, has the part thereof leading ,from the grinding chamber divided into a plurality of sections each having a restrictor mounted therein, the extent of projection of the restrictors into the passageway of the classifier increasing as the upper curvilinear portion of the classifier is approached. In a still further modification (Fig. 14, not shown), the classifier is of circular shape.
Patent GB-435974-A (GB)
Title: Improvements in or relating to processes and apparatus for softening raw rubber and compositions thereof
IPC: B29B7/56
Filed: 1935-02-14
Abstract: 435,974. Softening rubber. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. Feb. 14, 1935, No. 4814. Convention date, Feb. 21, 1934. [Class 70] In a process for softening raw rubber and compositions thereof with the use of a rolling mill comprising two oppositely revolving rollers, the rubber being worked as an endless loop formed by feeding the forward end of the issuing sheet again to the rolls, the loop accumulates in superposed folds upon a support at the feed side of the mill as its length increases with continued working to the desired thinness, the rollers drawing continuously from the accumulation. A rubber batch is charged into the mill comprising rollers 1, 2, initially adjusted to give a continuous sheet of say one inch thickness. The spacing is gradually reduced and the lengthening sheet 11 led over rollers 6, 5, driven at the same peripheral speed as the rollers 1, 2, and back to the feed side of the machine where it accumulates upon the supports 9 which can be swung downwardly and inwardly into operative position. When a few folds have formed, the end of the sheet is fed to the rollers. The supports may consist of forks, cylindrical or conical rolls, either smooth or grooved, or serrated bars, lattice-work members, or hook or shovel shaped members disposed parallel, transversely or otherwise, to the rollers. Two or more machines may be used in series.