baber/WOPTO huggingface dataset:
Patent GB-1080461-A (GB)
Title: A filter press
Inventor: ERMAKOV IVAN SEMENOVICH
IPC: B01D25/127
Filed: 1964-01-09
Abstract: 1,080,461. Filter press. UKRAINSKY NAUCHNO ISSLEDOVATEL'SKY I. KONSTRUKTORSKY INSTITUTE KHIMICHESKOVO MASHINOSTROENIA. April 2, 1965 [Jan. 9, 1964], No. 1108/64. Heading B1D. A filter press comprises a stack of plates (1) between which a length of filter cloth 16 is wound in a zigzag fashion, the cloth passing over a drive roller (29) which moves the cloth when the press is opened (Fig. 2, not shown). Fig. 3 shows two adjacent plates, each comprising upper and lower frames 7, 9 between which is clamped a flexible diaphragm 11, frame 7 carrying a rigid grid 8 which supports the overlying filter cloth 16. Plates 1 each have a lower peripheral seal 13 and sections of ducts 14, 28. With the press closed, slurry from valve (27) is delivered by duct 14 to form a cake C, filtrate being withdrawn from duct 28. Subsequently, liquid under pressure is supplied to inlets 12 to displace the diaphragms 11 downwards, so as to squeeze the cake C. The valve (27) supplies washing liquid to duct 14, and the cake is squeezed again. Duct 28 has a three-way outlet valve for separate collection of filtrate and washing liquids containing much and little dissolved materials. Lower platen (5) is lowered by electric motor-driven toggle linkage (6) (Fig. 1, not shown), and cloth 16, carrying sections of cake C is wound on, floating and fixed knives (22), (23) removing the cake from the cloth. In addition, the cloth passes through a cleaning chamber (17), where it is acted on by knives (25') and soft rotating brushes (24) through which liquid is supplied. Cloth 16 is maintained taut by two movable rollers (19) and fixed roller (20). In a large press, supporting rollers (18), as well as roller (29), may be driven.
Patent GB-1206354-A (GB)
Title: Cathode ray tube symbol generator
Inventor: HOLLAND TERENCE JOHN
IPC: G09G1/10
Filed: 1968-01-08
Abstract: 1,206,354. Cathode-ray tube displays. A. C. COSSOR Ltd. 13 Dec., 1968 [8 Jan., 1968], No. 1112/68. Heading H4T. A symbol generator producing X and Y coordinate beam deflection waveforms for a cathode-ray display tube comprises, for each co-ordinate waveforms for each symbol, a plurality of diode matrices each having input lines connected to output lines at selected intersections, determined by the shape of the symbol, means for applying successive strobing pulses, which overlap in time, to corresponding input lines of each matrix in turn, so that the input lines of all the matrices are strobed in "interleaved" fashion, to produce from the output lines of each matrix a succession of digitally coded parallel "words" each, in a corresponding "interleaved" fashion, being indicative of one co-ordinate of a succession of points in the symbol, the output lines of each matrix being connected to a separate digital-to-analogue (D/A) converter the outputs of which are switched to an output terminal in correspondence with the "interleaved" strobing during contiguous non-overlapping intervals of time each lying within but commencing after the corresponding strobing pulse interval. This arrangement enables the speed of character generation to be increased and avoids difficulties arising from switching transients in the D/A converter and from delays inherent in the operation of the diode matrix arrangement since if n matrices and associated D/A converters are employed each matrix and its associated converter is utilized only for the production of the deflection waveforms concerned with every n<SP>th</SP> co-ordinate point. In the embodiment described n = 2 and as shown in Fig. 2, pairs of matrices 10, 11 and 12, 13 having their input lines A1, A3 . . . A15 and B2, B4 ... B16 connected via diodes to their output lines in accordance with the respective X and Y co-ordinate values appropriate to the symbol comprising the Numeral 2 (see Fig. 1) are strobed by overlapping pulses (Fig. 3) supplied by a pulse generator (Fig. 4) which also supplies, the pulses required to switch over the associated D/A converters 15, 16, and 17, 18 (output, S) and clock pulses which, via logic circuit 27, provide unblanking pulses for the tube beam. A set of four matrices is provided for each symbol each of which is selected by a set of AND gates 25 (Fig. 6, not shown). The outputs of the D/A converters, which comprise step functions, are smoothed by means of delay line filters 23, 24 to provide the actual deflection waveforms (Fig. 5, not shown). The size of the reproduced symbols may be varied by varying the supply voltage to the (transistor) D/A converters (Fig. 7, not shown) and by keeping the point-to-point spacing substantially the same for all symbols and controlling the intensity of the beam of the display tube by this voltage all symbols are produced with substantially constant brightness. (For Figures see next page.)
Patent GB-433749-A (GB)
Title: Improvements in and relating to distributing apparatus for beverages and other liquids
IPC: B67D1/04
Filed: 1935-01-14
Abstract: 433,749. Vacuum apparatus for raising liquids. CACCIATORI, G., 20, Via Scutari, Lido, Venice, Italy. Jan. 14, 1935, No. 1228. Convention date, July 11, 1934. [Class 102 (ii)] [See also Groups XVII and XVIII] Apparatus for filling a receptacle with liquid from one of a number of storage vessels comprises a head 13 to which are connected pipes 10 communicating with the storage vessels, and a pipe 19 communicating with an exhauster. A spring-pressed plate 15 is turned so that a hole 21 registers with the desired pipe 10. The receptacle 1 is then raised by a platform 2 into contact with the plate 15, the platform being raised by a piston 4 operated by compressed air or vacuum supplied under control of a valve 22. The upward movement of the plate 15 uncovers orifices 18 in the end 17 of the pipe 19 and liquid is sucked through the pipe 10. A float valve 23 closes the pipe 19 when the receptacle 1 is full.
Patent GB-1180725-A (GB)
Title: Electrical Capacitors
IPC: H01G4/32
Filed: 1969-01-08
Abstract: 1,180,725. Capacitors. INTERNATIONAL STANDARD ELECTRIC CORP. 8 Jan., 1969 [17 Jan., 1968], No. 1235/69. Heading H1M. In a capacitor comprising electrode foils separated by strips of dielectric material wound into a roll, the foils and strips each being of substantially uniform width throughout their lengths, each electrode, over a portion of its length for several turns of the roll is arranged to project beyond the dielectric strip so as to form a contact ring for that foil projecting from an end face of the roll. As shown both foils project at the same end of the roll to form concentric contact rings 2, 3 connected to terminals 7, 9 on closure plug 10, a stud 11 of which centres the roll. Spring 12 ensures good electrical contact between rings 2, 3 and conducting members 6, 8. A third electrode may protrude from the opposite end face (Figs. 3, 6, not shown) the arrangement forming a deltaconnected capacitor (Fig. 5, not shown) or a pair in series (Fig. 8, not shown). The lead from the third contact plate may be taken through the central bore of the roll to a terminal mounted on the same closure plug (Fig. 12, not shown). Each electrode may have two contact rings one projecting from each end of the roll, and a number of such capacitors may be connected in parallel by pressing the end faces together (Figs. 9, 10, 11, not shown). The projection of the electrodes may be achieved by a gear train which shifts the axes of feed rollers sideways (Fig. 13, not shown).
Patent GB-606393-A (GB)
Title: Improvements in or relating to printing press frames
IPC: B41F13/00
Filed: 1946-01-14
Abstract: 606,393. Printing-machines; guiding webs. GOSS PRINTING PRESS CO., Ltd. Jan. 14, 1946, No. 1270. Convention date, Jan 12, 1945. [Classes 100(i) and 100(ii)] The cylinders of a rotary printing- machine are mounted in side frames 10 comprising upright portions joined at their top by an integral arched portion defining a generally central opening which permits of accessibility to the mechanism. the upright and arched portions being of channel formation to form pockets adapted to house driving-mechanism for rotatable printing members journalled in said frame. The framework is described as applied to a machine as set forth in Specification 606,394, and is constructed so as to enable the machining of the rough casts to be effected readily. Each frame 10 is formed of two columns c on either side of a central opening 11, a transverse yoke portion Y, and an integral arch portion A together with inner walls 12, a back wall 14 and a marginal wall 15. Pockets formed by integral 'web portions in the channel sections of the frames 10 form supports for the drive mechanism of the printing and inking rollers &c., the main drive shaft 43 of the press being arranged within a casing 42 secured to wall brackets 22 formed of beams which support the frames 10 by the aid of ribs 24 and edge flanges 25 integral with the frames 10' and machined so as to lie in a common horizontal plane. The outer edges of the frames 10 are machined to lie in a common vertical plane, and to these edges are secured aluminium oil-tight covers formed of four parts 37, 38, 39, 40, which enclose the gears, and are secured in position by screws 47, which permit removal of the sections independently. The outer faces of the frames 10 are machined flat so as to lie in a common vertical plane, and the contacting surfaces of the covers are similarly machined. The printing cylinders are mounted in bearing apertures 29 formed in the walls 14 and in arch bearing caps 27, and the walls 24 are connected by tie bars 33, 34, 35, which also serve as web guides, the upper bar 33 being of inverted V-shaped cross section with the round edge uppermost, and the bars 34, 35 being of inverted arcuate cross section. The oil casing 42 is formed with machined vertical and horizontal sides for securing to outer side face of the bracket 22, and to an overhanging portion of the frame 10, and the casings 39, 40 are screwed to the top surface of the casing 42. The driving gears are arranged as in Specification 606,394, and the gears are lubricated by a cascade of oil supplied by a pump 74, Fig. 3.
Patent GB-269640-A (GB)
Title: Improvements in electro-pneumatic valves
IPC: B60T13/66
Filed: 1926-01-16
Abstract: 269,640. Glenn, S. L., and Pierce, E. E. Jan. 16, 1926. Electric and pneumatic operation.-An electropneumatic valve primarily for controlling electropneumatic railway signalling devices, but applicable also for other purposes, comprises a main casting 1, Figs. 1 and 2, preferably with a supporting flange 2, a valve casing 7 registered with reference to the main casting 1 by three flanged ears 8 and dowel pins 9, and a weatherproof housing 22 secured underneath the main casting by screws 23 for the solenoid 21 actuating the double valve 12. The main casting has four dowel holes 10 in only three of which dowels are fitted; the dowels may, however, be changed in, position to vary or reverse the registered position of the valve casing on the main casing. The valve 12 is double conical, as shown, the lower seating being of larger diameter and slightly chamfered and hardened; the screwdriver slots are formed at opposite ends of the spindle to facilitate grinding the valves. The valve casing is secured on the main casting by a crossbar 16 and studs 19. Each solenoid is positioned as regards the main casting by a spigot 26 projecting upwards from the upper end of the fixed core 25. To avoid vibration and obtain a uniform pull to the moving lower core 27, the upper or fixed core, is provided with a copper shading-ring 28 and shaded core 29 as described in Specification 263,315, [Class 35, Dynamo-electric generators &c.]. The lower solenoid core is adjustable screwed on the valve spindle 15 and secured by a lock nut with interposed spring washer as shown. The coil tube 34 is of hard nonhygroscopic non-metallic material. The coil itself is interchangeable and is packed against longitudinal movement at the top by a felt &c. washer 36 and at the bottom by a hard insulating washer 37 locked in position by a side screw 38 so that the coil cannot drop out when the screwed cover is removed. The latter cover forms part of the magnetic circuit and a paxolin washer 33 is fitted to prevent magnetic sticking. The valve device is shown adapted for the control of air to an existing operating cylinder of a diaphragm dwarf signal, and to a new operating cylinder; a similar application is also shown adapted to a pneumatic signal machine in which the main casting 1 is provided with a flange for bolting to a signal mast, two valves being used, one for normal control and the other for reverse control of a " two-position " signal. For a " three-position " signal the main casting would have three valve, units instead of two. A doublecoil solenoid system may be used as described in Specification 269,641. Specifications 6553/01 and 11623/13 also are referred to.
Patent GB-1492814-A (GB)
Title: Circuit arrangement for the demodulator of an amplitude-modulated signal
IPC: H03D1/18
Filed: 1975-01-14
Abstract: 1492814 Demodulators SIEMENS AG 14 Jan 1975 [9 May 1974] 1462/75 Heading H3T A demodulator for amplitude modulated signals, comprises a differential amplifier with transistors 1, 2 whose emitters are coupled via a constant current source 6 to a reference potential, at least one transistor, 1, having a collector resistor 12, a rectifier 4 in series with a current amplifier 5 providing current negative feedback from the collector of said one transistor to the emitters, whereby the operating point of the transistors is held constant and the emitters produce a demodulated output. A low pass filter 24, 25 and an emitter follower 9 couples the LF signal to the output terminal NF. The circuit may be arranged for push-pull rectification by the addition of a resistor 17 and a rectifier 3. Current mirror arrangement 6, 20 is supplied with a stabilized voltage U stab  through a resistor 18. The demodulator is preferably an integrated circuit.
Patent GB-727981-A (GB)
Title: Improvements in or relating to apparatus for embossing sheet material and colouring the embossment
IPC: B41F3/36
Filed: 1952-01-18
Abstract: 727,981. Colouring raised parts of embossed sheets. STEPHENS, H. C. April 17, 1953 [Jan. 18, 1952], No. 1475/52. Class 100 (2). An equipment for colouring an embossed sheet comprises a plate 17, Fig. 1, having an aperture 18 formed therein adapted to leave the embossment uncovered when the sheet is positioned under the plate and an inking element 27, Fig. 2, having a flat face 30 to which ink is applied from an ink pad, the element 27 being shaped and dimensioned so as to be insertable in the aperture 18 and to rest on the embossment. The inking surface 30 may comprise a layer of fabric stretched over the face of the element 27. Grooves 29 around the periphery of the element receive the edges of the fabric and also serve to collect excess ink. The apertured plate 17 may be hinged to a plate 16 and both may be mounted on a baseboard 10 also carrying the embossing press 11, a detachable inking pad 21 and a clip 24 for holding an ink bottle 23. Alternatively the aperture 18 may be formed as a slot so that the inking element may be slid over the embossment from one end of the plate engaging the raised parts with a light pressure.
Patent GB-698195-A (GB)
Title: Improvements relating to electrical circuits including biassed rectifiers
Inventor: PIM JOHN ALBERT
IPC: H03K17/74
Filed: 1951-01-19
Abstract: 698,195. Attenuator networks. SIEMENS BROS. & CO., Ltd. Jan. 18, 1952 [Jan. 19, 1951], No. 1538/51. Class 40 (viii). In a variable attenuator consisting of a network comprising resistances and rectifiers biased by a variable control voltage, resistance elements associated with further rectifiers are shunted across one end of the network, the further rectifiers being also subjected to the control voltage, and the associated resistances being so chosen that the impedance looking in at the end of the network thus shunted, is substantially the same whether the attenuator is in the high loss or low loss condition. As shown, the attenuating network consists of an arrangement of rectifiers W1, W2, W3, W4, W5, W6, W7 and W8, with coupling transformers IT and OT, and the further rectifiers W9 and W10 with their associated shunting resistances R1, R2, R3, and R4. Instead of the parallel arrangement shown for rectifiers W9 and W10, they may be connected in series with shunting resistances and a further resistance is then arranged to shunt them all, with a resistance connection to join the mid-points of these shunt paths. Alternatively the separate resistance shunt is omitted and the centre of the rectifier resistance path connected through a rectifier and resistance to the mid-point of the transformer IT.
Patent GB-1536400-A (GB)
Title: Roof supports
IPC: E21D23/04
Filed: 1976-01-15
Abstract: 1536400 Self advancing mine roof support K M GROETSCHEL 15 Jan 1976 [15 Jan 1975 20 May 1975 8 July 1975] 01560j76 Heading E1P A method of operating a self advancing roof support system when tunnelling comprises anchoring a datum member by engagement with opposed sides of the tunnel to establish a datum, using the datum member to control the direction of advance of the roof supports, and advancing the datum member stepwise as the tunnel advances using the roof support when fixed to withstand the reaction forces. Apparatus for carrying out the method comprises self advancing roof supports 1 connected behind an extendable beam 10 which extends across the tunnel and has shoes 9 which engage the side walls A, B. The beam is advanced by two independent rams 4 and an oblique deflector plate 5 directs debris to a conveyor 11. A packing plate 12 may be trailed behind the roof supports 1. Additional roof supports 108, 120, Fig. 3, may be provided in front of and behind the roof supports 1. Roof matting 119 may be supplied from a roll 118 over the leading edge of the advancing support 1 or the front support 108 which is attached by a U bar to the datum beam 10 while the rear support 120 is attached to it by chains or cables 127, 128. In a modification, Fig. 8, there are two rear supports I, II, the rearmost being advanced towards the first by a cable b operated by a ram which moves a rod d in guides c, the rod having a ring f which engages a vertical rod g to allow limited vertical movement of the top of the support II.
Patent GB-157837-A (GB)
Title: Improvements relating to tipping wagons or trucks
IPC: B61D9/02
Filed: 1921-01-10
Abstract: 157,837. Klettner, F. Aug. 12, 1916, [Convention date]. No Patent granted (Sealing fee not paid). Tip-wagons.-The body a of a railway tip-wagon is mounted as to move transversely in tipping upon rollers or the like f on an intermediate frame c which is provided on its under, side with a shaft e rotatable in bearings d on the main underframe b. When the intermediate frame c is slightly raised, the body a is displaced laterally, and, with the frame c, automatically tips about the bearings d. Locking devices are provided to limit the movement of the body a in either direction, and two shafts e may be provided to enable the truck to be discharged to either side.
Patent GB-739244-A (GB)
Title: Improvements in or relating to apparatus for cooling disc brakes
IPC: F16D65/12
Filed: 1954-01-19
Abstract: 739,244. Cooling disc brakes. WELLMAN & CO., S. K. Jan. 19, 1954 [Feb. 10, 1953], No. 1603/54. Class 103 (1). In a disc brake, particularly for aircraft, the brake is cooled by means of water being injected under pressure into a closed annular chamber within the brake and thence through slots and grooves in the coacting friction surfaces to atmosphere. In the embodiment illustrated in Fig. 1, a wheel 2 is mounted on a stub axle 1 fitted with a radially extending brake flange 1a to which reaction members 5 and 6 are rigidly secured by bolts. In the annular channel-like space provided by members 5 and 6 are arranged a plurality of brake discs comprising four plain steel discs 8 which are provided with a series of notches to receive lugs of reaction member 5 to permit axial movement of the discs 8. The discs 8 are also formed with a plurality of radial slots which are open at their inner ends and permit a substantial amount of circumferential expansion and contraction of the discs without lateral distortion. In the spaces between the discs 8 are three co-operating brake discs 9 each comprising a steel core and provided on its two sides with sintered metallic friction facings 11. The discs 9 are driven by the cylindrical flange 12 rigidly secured to the web of the rotatable wheel 2 by means of lugs which also permit axial movement of the discs 9. The brake discs 9 are formed with radial slots similar to the discs 8 and the facings 11 are also formed with a circumferential series of radial and concentric grooves. An annular hydraulic plunger 14 mounted in an annular chamber 5b of the reaction member 5 serves to compress and release the pack of friction discs 8 and 9 to apply and release the brake. The plunger 14 is actuated by hydraulic pressure fluid supplied through passage 5c which communicates through tube 16 with the mastercylinder system. A series of spring clips 17 mounted on the reaction member 5 serve to disengage the plunger 14 and hence the brake discs when the hydraulic pressure is released. Cooling water may be injected under pressure into chamber 18, via passages 21, 22 from a header 19 which is supplied through pipe 20. This water in chamber 18 is then supplied through the radial slots in the discs 8 and 9 and through the radial and concentric grooves in the friction facings 11 to cool the friction surfaces and then emerges as steam through the annular space 23 surrounding the outer edges of the friction discs 8 and 9 to atmosphere. The cooling water is only supplied when either the pressure in the hydraulic supply pipe 16 rises above a predetermined figure or if the temperature of the brake discs, as measured by a thermocouple, rises above a predetermined figure. Details of both such control systems are described and illustrated in the Specification. Specification 530,904, [Group XXII], is referred to.
Patent GB-701422-A (GB)
Title: Improvements relating to shuttering for use in the construction of walls
IPC: E04G11/06
Filed: 1952-01-21
Abstract: 701,422. Mountings for cranes. BELLI, L. A. Jan. 21, 1952 [Jan. 26, 1951], No. 1672/52. Class 78 (4) [Also in Group X] A slewing crane is carried on wall shuttering built up of units each comprising a shutter plate 1 mounted on a metal box 2 having a centred tube 8 and the post of the crane is mounted in collars 37, made in two parts bolted together and having rods 38 passing through the central tubes 8.
Patent GB-384115-A (GB)
Title: Improvements in or relating to seatings for screw stoppers or bungs of drums and like metal containers
IPC: B65D39/08
Filed: 1932-01-20
Abstract: 384,115. Screw bungs. ROBINSON, G. A., Hillcrest, Hull. Jan. 20, 1932, No. 1685. [Class 21.] A seating for a screw bung 3 comprises a bush 1 threaded externally and internally, passed through the bunghole from the inside or outside and secured in position by an internally threaded screw or nut 5, a rubber &c. washer 7 being employed to ensure a tight joint. The stopper may be provided with a rubber &c. washer 8, and is rotated by a turnkey engaging a recess 9 which may have a sealed wire passed across it to prevent unauthorized opening.