baber/WOPTO huggingface dataset:
Patent GB-1299026-A (GB)
Title: Transistor circuits for charging and discharging a capacitive load
Inventor: KEMERER DOUGLAS W
IPC: H03K17/042
Filed: 1971-06-25
Abstract: 1299026 Transistor switching circuits INTERNATIONAL BUSINESS MACHINES CORP 25 June 1971 [28 Sept 1970] 29823/71 Heading H3T In a circuit having a bipolar transistor T8 connected in series with a capacitive load CL to charge the capacitive load from a voltage source VH and a further bipolar transistor T5 connected in shunt with the load to discharge the load, a charge control means including a drive transistor T7 supplies drive from the source VH to the base of T8 for turning on T8 to charge the load and decouples the base of T8 from the source VH when the potential at the point A approaches the potential at the base of T7 so that the base-emitter capacitance of T8 supplies base drive to T8 to charge the point A to substantially the full potential of the voltage source VH. A voltage limiter consists of R 4  and diodes D1, D2, D3 and current flowing through R4 and D2 sets the anodes of D1 and D3 at 0À7 V above ground so that when the collector of any one of T1, T2 or T3 drops below ground diode D1 or D3 conducts and prevents the collector voltage dropping further. When the voltage at the inputs Vin, Vg are lower than at Vref the transistors T3, T4, T7 and T8 turn on and T1, T2, T5 and T6 turn off so that the capacitive load CL charges via T8. When the voltage across the load CL increases to reduce the base-emitter voltage (Vbe) across T7 to below one Vbe drop, T7 cuts off and T8 is maintained on due to the charge stored in the baseemitter capacitance CF of T8 until the potential at A approaches the supply potential VH. The time constant of the stray capacitance CS at the base of T7 and R5 should be smaller than the time constant CL and resistor R7. When the voltage at Vref to lower than that at Vin and Vg the transistors T1, T2 are on and T3 is off. This makes T4, T7, T8 off and T5, T6 on so that T5 discharges load capacitance CL. Diodes D4, D5 now turn on so that the charge on CL is used to drive T5 harder so as to speed up the discharge operation. Leakage resistor R10 prevents stray charge building up on capacitance CF and accidentally turning T8 on.
Patent GB-262255-A (GB)
Title: Improvements in or relating to telephone receivers
IPC: H04R7/12
Filed: 1925-11-26
Abstract: 262,255. French, E. Nov. 26, 1925. Diaphragms; loud-speakers.-Relates to diaphragms for telephone receivers and more particularly to large reinforced diaphragms for loudspeakers, such as are described in Specification 230,552. According to the invention, ribs attached to the back of the diaphragm are connected to the reed of the actuating magnet, and, in addition, a ' screen " is attached to the periphery of the diaphragm so as to extend from one or both faces thereof. In the construction shown, a circular diaphragm a, of paper &c., has a cylindrical attachment or screen b, peripheral portions l of the diaphragm being bent over and secured to the part b. Triangular-ribs fare attached at their edges g to the diaphragm, and at their edges h to a central light rod i connected to the reed of the magnet j. Light cane, coiled as shown in broken lines e, is provided on the front surface of the diaphragm, for reinforcing, and strengthening ribs m may be attached to the rear face. Similar ribs may also be applied to the ribs f. The whole diaphragm may be supported only by the central rod; the screen may, however, be restrained by connecting it at several points c to an external casing d. Instead of forming the screen as a separate attachment, it may be made by bending the edge of the diaphragm cylindrically.
Patent GB-335385-A (GB)
Title: Improvements in mechanical stokers
IPC: F23H11/00
Filed: 1929-10-03
Abstract: 335,385. Thompson Water Tube Boilers, Ltd., J., and Partridge, H. E. Oct. 3, 1929. Grates.-A travelling grate comprises a number of endless chain units mounted at each end of the grate on coaxial sprocket wheels and arranged side by side so as to occupy the entire width of the grate. As shown in Figs. 2 and 4, the driving links 4 and ordinary carrier links 6 of each unit 2 are connected by transverse pivot pins 3 on the ends of which are provided sleeves 15 for carrying tumbler links 5. The holes in the tumbler links are rather larger than the sleeves 15 and have rounded edges. The tumbler links are of angle section and extend above the ends of the pivot pins 3. They are capable of a limited tilting movement, so that during expansion and contraction of the grate the space between the grate units remains closed. Guide bars 18 may engage with the tumbler links. In the modification shown in Fig. 6, the tumbler links 5 and driving links 4 are provided with projections and recesses 20. 21 engaging with one another. Heel pieces 23 on the tumbler links engage with a rib 24 on the guide bar 25.
Patent GB-791706-A (GB)
Title: Panels for use as constructional units and the structures formed therefrom
IPC: E04C2/02
Filed: 1955-10-21
Abstract: 791,706. Panels. RENARD, G. Oct. 21, 1955 [Oct. 23, 1954; Nov. 19, 1954], No. 30092/55. Classes 20(4) and 87(1) A rectangular panel 1, Fig. 29, capable of being assembled with other similar panels to form structures, has each of its sides provided with a rectangular flange 2, 3, 4, 5, perpendicular to the plane of the panels, three or more of the flanges being shorter than the corresponding sides of the panel to provide gaps adjacent each of the four corners of the panel. As shown each flange is shorter than its corresponding side. In a modification one of the flanges is of the same length as the corresponding side, the opposite flange is shortened at each end and the other flanges are each shortened at one end. The flanges may be made of double thickness by bending back the material upon itself. Holes 10, 11 may be provided for the passage of bolts or screws to connect panels together, or to connecting or strengthening members. Such members may be of triangular form, Fig. 34, for connection in the corners of the panels, or of angle or channel form. The latter may be used as at 25<SP>1</SP> in Fig. 21 to connect two panels face to face and a pair of such combinations side by side. Alternatively a pair of channel members may be used as in Fig. 22 to connect two panels face to face. A connecting member may be formed by securing a box-like member of sheet metal at right angles to a channel member. A U-shaped moulding 13, Fig. 19, may be secured by the head 19 of a screw 20 to a flange 3 of a panel 1 to cover the holes in a flange which are not otherwise used and to decorate the construction. The panels, which may be used for building tables in combination with cabinets, cupboards, files or other furniture or may be used as shuttering, may be formed of metal, plastics or concrete.
Patent GB-1004459-A (GB)
Title: Electronic circuits
IPC: H05K3/28
Filed: 1961-08-21
Abstract: 1,004,459. Circuit assemblies. AMPHENOLBORG ELECTRONICS CORPORATION. Aug. 21, 1961 [Aug. 22, 1960], No. 30099/61. Heading H1R. A printed circuit board is made by forming a pattern of metal conductors on a backing sheet, bonding overlying insulating material to the conductors and backing, stripping the backing to leave the conductors bonded to the insulating sheet, forming the ends of the conductors into upstanding tabs or attaching tabs to these ends so that they project through or are adjacent holes through which terminal leads are brought. As shown in Figs. 1-6, the base sheet 10 of copper has a coating 11 of resist (e.g. photoresist) material applied when the exposed surfaces 12 are coated with nickel 13 (Fig. 2). The resist is then removed (Fig. 3) and the face of the sheet is covered with an insulating layer of, e.g. epoxy resin, ceramics, Teflon (Registered Trade Mark) or organic laminates except for holes 16 where tabs are to be formed. Next, backing 10 is removed leaving the conductors 13 embedded in the insulation 15 and the end portions are bent up to form tabs 17 (Fig. 5). The copper may be dissolved by etching but other processes are possible. Finally a back layer 18 of insulation is applied. Fig. 8 shows connecting wires 31 projecting through the holes and these may be welded or soldered to the tabs. Fig. 8 also shows the use of a second circuit plate made as previously described but with longer tabs. The holes in the two plates are aligned so that the longer tabs 36 project through both holes and are welded both to the upper tab and to the component lead 31. The space around the components may be filled with a potting compound 39. In the arrangement described with reference to Figs. 9-12 (Fig. 9 only shown) a tube 43 is welded to the plated conductor 13 before the insulating backing is applied. In an arrangement described with reference to Figs. 13-15 (Fig. 13 only shown), a masking strip 51 is used to cover the part of the metal strip 13 to be bent after the copper backing plate is removed. The printed circuit plate need not be in one plane (Figs. 17 and 18, not shown). Fig. 19 shows the use of the four boards made as described above to provide the necessary binary connections for the printed circuit of Fig. 20.
Patent GB-299309-A (GB)
Title: Improvements in or relating to means for opening letter cards
IPC: B42D15/08
Filed: 1928-10-18
Abstract: 299,309. Voglmayer, M. Oct. 22, 1927, [Convention date]. Guillotine machines. - Folded letter-sheets or cards which are secured at two lateral edges by crimping or embossing in known manner are opened by apparatus comprising two cutters which operate to sever the sealed margins, and means such as an air-blast, suction device, or grippers, is provided for unfolding the top flap and underneath portion of the card. A receipt stamp for stamping the time of receipt may be combined with the apparatus. A machine adapted to open the sealed sheet consists of a pair of spaced guillotine-cutters 3, Fig. 8, connected by rods 2 to a crank-shaft which reciprocates them vertically within guides, so that the camped edges of a sheet fed along an endless conveyer band by driving-rollers 6, 7 are severed. A roller 4 carried by a spring-controlled pivoted arm on each cutter engages and holds the sheet before and during cutting. When the cutters ascend, the top flap of the folded sheet is opened by a blast of air from an adjacent nozzle 5, a similar nozzle 11, oppositely directed, subsequently serving to open the remaining fold as the sheet is advanced upon the conveyer. The unfolded sheet is fed forward by rollers 7, 8 into position beneath a reciprocating receipt stamp 15 which is driven by a sprocket chain 13 connected to the cutting-mechanism, the timing being such that when the stamp descends the sheet is stationary. Filing perforations may be punched simultaneously upon one edge of the sheet. A conveyer band 16 ejects the sheet.
Patent GB-779533-A (GB)
Title: Improvements in fluid dispensing apparatus
IPC: B67D7/40
Filed: 1954-10-20
Abstract: 779,533. Roadside tyre-inflating plant and the like. TURNER, W., and ASKEW, G. Sept. 28, 1955 [Oct. 20, 1954], No. 30239/54. Class' 116. Twin pipe lines connected, one to supply fluid from a dispensing apparatus and the other to convey to a pressure gauge 12 the pressure attained in the apparatus supplied, are housed on a spring-biased reel 20 which retracts the pipe lines into the dispensing apparatus when not in use. In the construction illustrated the pipe lines 13, 14 are co-axial and the reel 20 is biased by a spring drum 25. The spring 24 within the drum is anchored at one end to a collar 26 fast with the fixed shaft 21 on which the reel and spring drum are mounted and at the other end to the peripheral wall 27 of the drum. The initial bias in the spring can be adjusted by turning the peripheral wall 27 relatively to the cheeks 29 of the drum, the bias being transmitted to the cheeks by a pawl 30 engaging projections 31 on the wall 27. The inner ends of the pipe lines are connected to a head 33 carried by the reel 20 and connected by conduits 34, 35 to a rotating gland by which they are connected to a supply pipe 46 and to a pipe 47 leading to the pressure gauge. The pressure gauge is carried in a rotating head containing the usual aperture 15 from which the pipe lines leave the apparatus and the pipe 47 is connected to the gauge through a swivel joint 49 disposed at the axis of the head.
Patent GB-927961-A (GB)
Title: Improvements in or relating to a method for producing a thermophilic bacteria-free starch and the product thus produced
IPC: C08K5/14
Filed: 1961-08-22
Abstract: Starch is freed from thermophilic bacteria by adding to an aqueous slurry of ungelatinized starch, more than 0,001 up to 1,0%, based on the weight of dry starch, of a peroxy aliphatic acid, e.g. peroxy acetic, peroxy-propionic and peroxy-butyric acids, and then drying the starch.  The starch may be from, e.g. corn, tapioca, rice, potato, waxy maize, sago or wheat and may be modified by, e.g. oxidation, partial hydrolysis, cross-linking, esterification or etherification.  The aqueous slurry, usually containing 18-45% of starch solids, is preferably adjusted to a pH of 7 or below either before or after addition of the peroxy-acid.  The pH after addition is preferably 4-5,15.  The time and temperature of treatment may be from a few minutes to 2-3 hours, and about 40 DEG -125 DEG F. respectively.  The treated slurry may be dewatered and dried below the gelatinization temperature of the starch, or may be subjected to high temperatures by, e.g. spray- or drum-drying to give a gelatinized product.  Other bactericides, e.g. hydrogen peroxide may be used in conjunction with the peroxy aliphatic acid.  The treated starch, particularly suitable for food use, is substantially free from thermophilic bacteria and spores, contains no residual treating agent, and is unimpaired as regards viscosity and taste. Specification 641,222 and U.S.A. Specification 2,935,510 are referred to.
Patent GB-300236-A (GB)
IPC: F23D11/10
Filed: 1928-10-20
Abstract: 300,236. Peckelhoff, B. Nov. 9, 1927, [Convention date]. Open-tray and pulverulent-fuel burners. - Liquid or powdered fuel is supplied to a rotating annular burner cup a by a pump e through a hollow spindle b on which the cup is mounted and a pipe f. Air is supplied through a valvecontrolled branch g, part being directed by nozzles h on to the fuel in the cup and the remainder being directed by nozzles i on to the flame. The spindle b is rotated by an electric motor c. The fuel is distributed and held in the cup by centrifugal force and, on gasification, mixes with the air currents from the nozzles h. Gasification of the fuel is facilitated by the hotter fuel particles becoming separated from the colder fuel particles owing to their lower specific gravity and being brought to the inner surface of the fuel in the cup. Fuel overflowing from the burner is caught in a shield k and returned to the fuel tank. In a modification, the cup is formed with fan blades for inducing the air supply.
Patent GB-1258678-A (GB)
IPC: E21B4/00
Filed: 1970-06-23
Abstract: 1,258,678. Boring earth. SOC. GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM) 23 June, 1970 [30 June, 1969], No. 30443/70. Heading E1F. The sealing device 11 of a bearing chamber 9 disposed between the drive shaft 4 and the body 1 of a borehole drilling machine is separated from the well fluids by a chamber 13 filled by a protective product which is maintained at a higher pressure than the well fluids present in spaces 12 and 22 by a spring 24 acting on a piston 18 in a cylinder 17. As shown the sealing device 11 is beneath the bearing housing while a similar chamber 13 may be provided for the sealing device above the housing with this second chamber either having its own piston spring arrangement or being connected by a passage to the chamber 13. The protective product may be silicone grease, an oil, or a liquid anti-rust product.
Patent GB-1147764-A (GB)
Title: Capsule unloader
IPC: A23L3/06
Filed: 1966-07-07
Abstract: 1,147,764. Conveyers. FMC CORP.7 July, 1966 [19 July, 1965], No. 30444/66. Heading B8A. [Also in Division A2] In a heat sterilization apparatus in which jars J or other sealed containers are passed through the apparatus while contained within capsules (28), the capsules (28) are unloaded by magnetically withdrawing their components, cartridges 24 and carriers 26, from the jars J. The cartridges 24 and carriers 26 have at least their end plates constructed of magnetically attractable material. In one embodiment, the cartridges 24 travel on, and are held magnetically to, the upper run of a conveyer 60 while another conveyer 62, having an endless non-magnetic belt 176 backed on its lower run by a plurality of magnets, is mounted immediately above conveyer 60 and magnetically attracts the carriers 26 to the lower surface of its belt 176. The conveyer 62 rises above the conveyer 60 along its length, withdrawing the carriers 26 which it then discharges. The cartridges 24, still containing the jars J, are then guided by a semi-cylindrical rail 164 round to the lower run of the conveyer 60 to which the cartridges remain magnetically held while the jars J are discharged by gravity on to an endless belt conveyer 66, the under run of the conveyer 60 progressively rising along its length further above the conveyer 60. In another embodiment, the capsules (28) are unloaded while travelling on a drum-shaped conveyer (320) by carriages (376) holding magnets which carriages are guided by tracks first to contact the end plates of the capsule components 24, 26 and then to draw the cartridges 24 and the carriers 26 away from each other, the jars J being maintained meanwhile in a central position on the drum (320) by centring shafts (368, 370) which pass through holes both in the end plates of the components 24, 26 and in the carriages (376).
Patent GB-179202-A (GB)
Title: Improvements in apparatus for cleansing and cooling "suction" or producer gas for automobile engines
IPC: B01D51/10
Filed: 1920-10-28
Abstract: 179,202. Bamber, H. W., and Parker, J. W. Oct. 28, 1920. Charge, cooling and purifying.-In engines using suction or producer gas, the gas is cooled before admission to the engine by a current of air induced by the engine exhaust. As shown in Fig. 1, the gas passes through a vessel a surrounded by a chamber c through which a current of air is induced by an exhaust ejector g. In modifications, the gas is both cooled and purified from dust. In one such construction, the gas enters the cooling-vessel k, Fig. 2, through an inlet e and is directed to the bottom of the vessel when the dust accumulates, by a partition m; the gas then passes upwards over tubes p, through which the cooling-air is induced, to the outlet f. The bottom of the vessel may be provided with inclined sides q, and openings r, s, are provided for the removal of dust. In another construction, the gas enters the top of a vessel with a rounded top, and is directed to the bottom thereof by a segmental partition extending the full length of the vessel, before passing upwards over the cooling-tubes.
Patent GB-1058448-A (GB)
Title: Spinneret
IPC: D01F8/04
Filed: 1963-08-01
Abstract: 1,058,448. Spinnerets. ASAHI KASEI KOGYO KABUSHIKI KAISHA. Aug. 1, 1963 [Aug. 2, 1962], No. 30563/63. Heading B5B. A spinneret for producing crimpable multicomponent fibres of heterogeneous cross-section comprises at least one orifice plate, and at least one orifice back plate spaced narrowly apart, each of said plates having a plurality of orifices whereby each of the orifices in the back plate is in alignment with one of the orifices in the orifice plate such that a first (core) fibre-forming component may be supplied through the orifices of the back plate to the orifices of the orifice plate, and a second (sheath) fibre-forming component may be supplied between the plates in a direction perpendicular to the supply of the first fibre-forming component. In one embodiment (Fig. 7) a core component is fed into space 10 and thence via orifices 3 in back plate 6 to the narrow space 4, 5 between the backplate and orifice plate 7. A sheath component is fed from spaces 8, 9 to flow inwardly towards the orifices so that a sheath/core multifilament is extruded through orifices 1 in orifice plate 7. The eccentricity of the core within the sheath depends upon the distance between the plates, and the diameter and density of the orifices. The orifices may be arranged in a row or rows perpendicular to the direction of flow of the second (i.e. sheath) component, and may be further arranged so that a line joining an orifice in one row to an orifice in the adjacent row is not parallel to the direction of flow of the sheath component. A preferred spinneret has 4-50 rows of orifices when the number of rows is even, or 7-51 rows or orifices when the number of rows is odd. In Example 1, a 15% solution of acrylonitrile/ methyl acrylate copolymer in 70% nitric acid at - 3‹ C. is extruded into 33% nitric acid at - 3‹ C. and the coagulated filaments are waterwashed and hot-stretched 8 times. The resulting fibres are treated with oil, dried and treated with steam at 120‹ C. to generate crimps.
Patent GB-520485-A (GB)
Title: Improvements in and relating to apparatus for counting and delivering predetermined numbers of articles
IPC: G06M9/00
Filed: 1938-10-22
Abstract: 520,485. Photo-electric counting-apparatus. LEEMING, J. F. Oct. 22, 1938, No. 30572. [Class 40 (iii)] An apparatus for counting articles such as clothes and delivering them in batches of a predetermined number comprises means for feeding the articles singly between a source of light C and a photo-electric cell D on to a tray E, a relay circuit controlled by the cell for operating a ratchet wheel K step by step by an electromagnet L, means such as a brush co-operating with contacts rotating with the ratchet wheel to control an electromagnet P when the desired number of articles has been piled up on the tray E whereupon a catch H is released to allow the platform E to tilt about a pivot e to deliver the pile. The empty platform is tilted back by a counterweight e<SP>1</SP> and is again held by the catch H in readiness for the next pile. As shown, the articles are fed to the apparatus from a table A<SP>2</SP> by a conveyer A leading to rollers b, B, from which they drop on to the tray E.
Patent GB-426253-A (GB)
Title: Improvements in or relating to cricket bails
IPC: A63B69/00
Filed: 1934-10-25
Abstract: 426,253. Cricket bails. CHADWICK, J., 44, Lynthorpe Road, Blackburn. Oct. 25, 1934, No. 30578. [Class 132 (ii)] Cricket bails are keyed in position on the stumps by providing grooves B, E at the inner ends of the bails C adapted to be engaged by an upstanding peg G on the middle stump. Studs A, D on the bails engage holes F, H in the stumps.