baber/WOPTO huggingface dataset:
Patent GB-527902-A (GB)
Title: Improvements in or relating to frequency selective circuit arrangements
IPC: H03H7/01
Filed: 1939-01-12
Abstract: 527,902. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., RUST, N. M., and GOODENOUGH, E. F. Jan. 12, 1939, No. 1108. [Class 40 (v)] A frequency-selective circuit arrangement comprises one or more valves associated with a feedback impedance network including a piezoelectric crystal and a manual or other adjustment for controlling the effectiveness of the feed-back in such a way as to provide a smooth and gradual broadening of the selectivity of the circuit. In one arrangement, Fig. 1, applied to the intermediate frequency stage of a superheterodyne receiver for use, for example, in radio direction finding, the feed-back network in the cathode leg of a valve V comprises a crystal P resonant to the mid-band frequency, an inductance L, a capacity C and a variable resistance R all in parallel, the values of the inductance and capacity being such as to secure a symmetrical inpedancefrequency characteristic with reference to the intune frequency. The signal input or control grid is connected to the earth end of the network through a tuned input circuit 1 and the anode circuit includes the usual tuned output circuit 2 feeding into the next stage. That the sharpness of selectivity may be smoothly controlled by varying the resistance R is illustrated by a diagram representing the variation of the attenuation in decibels with the number of kilocycles "off tune" for values of R ranging from 0 to 500,000 ohms. In a modified arrangement the feed-back network is in the anode circuit of the second of two valves having their grids connected or coupled in common to an input circuit, the resistance R being a potentiometer of which the adjustable tap is connected to the control grid of the first valve. In another arrangement, Fig. 4, the crystal P, in circuit between the cathode and the input circuit 1 is shunted by condensers C 1 , C 2  of which the junction point is earthed and by partially magnetically coupled inductances L 1 , L 2 , earthed through a resistance R<SP>11</SP>; the effectiveness of the feed-back and hence the selectivity is varied by varying the mutual conductance of the valve either manually, as by a potentiometer control of a source of negative potential connected between the grid leak and earth, and/or automatically, as by application of A.V.C. voltage to the grid. The arrangements claimed in Specification 509,398 are disclaimed.
Patent GB-681135-A (GB)
Title: Improvements relating to dry gas meters
IPC: G01F3/22
Filed: 1950-05-30
Abstract: 681,135. Dry gas meters. METROPOLITAN GAS METERS, Ltd., PEARCE, W. F., and DIGGLE, S. Feb. 5, 1951 [May 30, 1950], No. 1113/51. Divided out of 681,132. Drawings to Specification. Class 54. A dry gas meter in which the gas causes a series of flexible diaphragms to reciprocate in timed sequence under the control of valves driven from the diaphragm has its measuring chambers formed by die-cast parts which are of generally circular shape. The meter is described in Specification 681,132. Specifications 681,133 and 681,134 also are referred to. Reference has been directed by the Comptroller to Specification 660,114.
Patent GB-288119-A (GB)
Title: Improvements in or relating to fittings for portieres or door and like curtains
IPC: A47H1/03
Filed: 1928-01-12
Abstract: 288,119. Younger, W. Jan. 12, 1928. Brackets; portiÞre rods. - In a portiÞre rod arrangement of the type comprising a rod 14 carried by a bracket 5 attached to tha door frame and provided with a cam 15 engaging a roller 17 carried by a door bracket 16, the door frame bracket 5 consists of a pair of arms 1, 2 for attachment to the side and top rails of the door frame, the arms being relatively adjustable so that bracket can be used for a left or right-hand door, and the projecting part 3 of the bracket carries a rotatable fork member 4 provided with trunnions 9, 10, at least one of which is adjustable, for pivotally supporting the portiÞre rod. In the construction shown the arms 1, 2 are pivoted together so that the arm 2 can be arranged to project on either side of the arm 1. In a modification the arm 2 is slotted to allow this adjustment.
Patent GB-587749-A (GB)
Title: Improvements in or relating to the production of benzaldol derivatives
IPC: C07C35/14
Filed: 1945-01-15
Abstract: D 3-Tetrahydrobenzaldehyde is aldolised by standard methods, e.g. by treating with an alkali such as sodium or potassium hydroxide advantageously in alcoholic solution and below approximately 65 DEG C. to obtain D 3:tetrahydrobenzaldol, which is used as an intermediate in the production of further compounds.  Thus, it may be reduced to 1-methylolcyclohexylcyclohexyl carbinol, which may be esterified and etherified to produce mono- and di-esters and ethers, valuable, e.g. as plasticising and dispersing detergent or wetting agents.  Reduction of D 3-tetrahydrobenzaldol may be effected by hydrogenation, e.g. in alcoholic solution in the presence of Raney nickel, a hydrogen pressure of 800-2000 lbs. per sq. inch at 75-125 DEG  C. sufficing to reduce both the aldehyde group and the unsaturated groups in the tetrahydrobenzaldol.  The glycol thus obtained may be esterified and etherified, esterification being effected either with the desired organic acid or its anhydride, optionally using an esterification catalyst, e.g. hydrochloric acid. Specified acids for this esterification are formic, acetic, monochloracetic, glycollic, propionic, butyric, isobutyric, lauric, stearic, acrylic, methacrylic, crotonic, phenyl acetic, o-, m- and p-tolyl acetic, hexahydrobenzoic, cinnamic, benzoic and acids carrying a heterocyclic nucleus, e.g. pyromuric and a -pyrrolidine carboxylic acids.  Polycarboxylic acids, e.g. glutaric, adipic, suberic, succinic, fumaric and maleic acids may be used.  Moreover, the 1-methylcyclohexyl-cyclohexyl-carbinol may be treated with inorganic acids, e.g. sulphuric acid, to obtain wetting and detergent agents.  Etherification is effected by standard methods and the following residues of hydroxy compounds may, e.g. be introduced: methyl, ethyl, propyl, isopropyl, butyl, sec.-butyl, amyl, benzyl, dodecyl, octadecyl, cyclo-hexyl, furfuryl and abietyl alcohols, and ethylene glycol, propylene glycol, phenol, the cresols and the hydroxy-pyridines.  In examples: (1) D 3-tetrahydrobenzaldehyde is stirred with saturated 95 per cent ethanolic sodium hydroxide to obtain D 3-tetrahydrobenzaldol; (2) the product of (1) in ethanol is hydrogenated under pressure, using a Raney nickel catalyst to obtain 1-methylolcyclohexylcyclohexyl-carbinol; (3) the product of (2) is heated with acetic anhydride, prior to treating with ethanol and warming, to isolate 1-methylolcyclohexyl-cyclohexyl-carbinol diacetate; (4) the product of (2), in ether, is treated with sodium prior to adding dimethyl sulphate and heating under reflux to isolate 1-methylolcyclohexyl-cyclohexyl-carbinol dimethyl ether.  D 3-Tetrahydrobenzaldehyde is obtained by the Diels-Alder condensation of acrolein and butadiene.
Patent GB-413323-A (GB)
Title: A new and improved safety device more particularly for railways
IPC: B61L3/06
Filed: 1933-01-13
Abstract: 413,323. Track apparatus for actuating signals on trains. ZISSU, T., 15, Gustav-Freytagstrasse, Grunewald, Berlin. Jan. 13, 1933, No. 1182. [Class 105.] With a wayside signal at danger a lamp 4 disposed in blackened casing 7 recessed into the track projects a vertical beam of light or infrared rays to actuate a selenium or tellurium cell 9 housed in a black-walled recess 15 on the underside of the locomotive whereby a siren S and brake valve V are operated. Two lamps are preferably provided in case one lamp should fail. The lamps are protected by a grid 6.
Patent GB-659302-A (GB)
Title: Improvements in or relating to universal coupling devices
IPC: F16D3/04
Filed: 1949-01-15
Abstract: 659,302. Universal joints. COLE, Ltd., E. K., and KNIPE, A. R. Jan. 15, 1949, No. 1185. [Class 80(ii)] Spindles D, e.g. of ganged electrical condensers are coupled by an intermediate Hooke's disc E, having pairs of oppositely projecting axial pins C on diameters at right-angles, slidably engaging radial slots B in shaft-members A, each of which is formed from flat stock of T-shape, the leg of which is slotted and bent over parallel to the plane of the cross-member, which, like the leg, is apertured to receive the shaft D, and is clamped thereon by a bolt H nipping the outer ends of the slot in the leg K. A bent wire spring M round each shaft presses on the corresponding pins C to prevent play.
Patent GB-935141-A (GB)
Title: Improvements in or relating to machines for the manufacture of cigars
IPC: A24C1/36
Filed: 1962-01-12
Abstract: 935,141. Cigar making machines. ARENCO A.B. Jan. 12, 1962 [Jan. 18, 1961], No. 1295/62. Class 130. To separate cigar or cigarette bunches B joined by a wrapper strip W, a rotary knife 1 is provided in a holder 3 which rotates about an axis perpendicular to the plane of the knife and to the direction of feed of the cigar rod R. The rod is advanced by rollers 4, 5, driven by bevel gearing from a shaft 7. The knife 1 is rotated by a belt 16 driven by gearing through a shaft 20 in turn driven from the shaft 7 by a belt 22 and further transmission, not shown. The holder 3 has a gear 24 fast thereon which is driven from shaft 7 by gears 31, a shaft 28, a magnetic clutch 29, a shaft 26 and a gear 25. In operation, the knife 1 is normally in a plane parallel to the rod R. When a constriction C between two cigar bunches passes a feeler 32 the clutch 29 is operated to cause rotation of the holder 3 so that the knife rotates and severs the bunches at the constriction, as shown. When the knife has rotated through 180 degrees a contact device 36 causes the clutch 29 to disengage until the following constriction C is severed by the feeler 32. Specification 856,082 is referred to.
Patent GB-106073-A (GB)
Title: Improved Sock or Stocking.
Inventor: MARTIN JEANNETTE
IPC: A41B11/12
Filed: 1917-01-27
Abstract: 106,073. Martin, J. Jan. 27, 1917. Stockings and socks. -The foot A of a sock or stocking has tapes or straps D which, by passing through holes E in a separate leg part B, enable the foot and leg to be connected together. Alternatively, the tapes may be attached to the leg part, and pass through holes in the foot parts. The tapes, preferably two in number, mav be wound round the leg in opposite directions, and secured near the top in any suitable manner. A worn foot can be cut off an ordinary sock or stocking and a new one attached in the above described manner.
Patent GB-725937-A (GB)
Title: Safety devices for drives for machine parts
IPC: D03D47/24
Filed: 1953-01-16
Abstract: 725,937. Slip-couplings. SULZER FRERES SOC. ANON. Jan. 16, 1953 [Jan. 16, 1952], No. 1372/53. Class 80 (2) [Also in Group IX] An overload coupling for a machine part is arranged to operate, on overload, an indicating device and/or a device for stopping the machine, and is shown applied to a shuttle conveyer drive in a loom of the gripper shuttle type. The main shaft 32, Fig. 1, of the loom is driven by an electric motor through V-belts and a clutch-brake mechanism housed in a drum 34. Weft is drawn from bobbins 29 by shuttles which are shot from left to right and are then returned from a catching box to a picking box 35 by a conveyer 38. In the picking box 35, Fig. 4, a shuttle holder is swung about a shaft 63 to lift a shuttle to the picking position and a cam on a picker shaft 47 cocks a damped torsion bar 49, which actuates a picker to shoot the shuttle through the shed. The shaft 47 is driven through bevel gearing from the main shaft 32. The conveyer 38 comprises a chain 52 driven by a sprocket geared to a shaft 56 on which is slidably splined an element 69, Fig. 5, of the overload coupling, the said element having teeth which are held in engagement with corresponding teeth on a second element 68 by a spring whose pressure is adjusted by moving a collar 74. The element 68 is integral with a gear wheel 67 which is free to rotate on the shaft 56 but is axially held so that normally the wheel 67, which is geared to the shaft 47, drives the shaft 56, and hence the conveyer chain 52, through the overload coupling. On overload (caused, for example, by jamming of a shuttle), the element 69 is moved to the left and thereby displaces an indicator 76 which is attached to a block slidable in a slot in the casing 81. In addition, a lever 84 is rocked and, through a rod 91, moves a shaft 45 which stops the machine-e.g. by actuating a solenoid controlling the clutch-brake drum 34. The stop shaft 45 may also be operated by various other safety devices in the loom. Since, when an overload occurs, the shaft 56 may become out of phase with the shaft 32, the former shaft has a squared end to receive a crank handle for resetting. The splines on the shaft 56 mesh with a freely rotatable toothed ring 97 whose front surface carries a mark visible at a certain position, through a window 99, the spline-tooth ratio being the same as the gear ratio between shafts 56 and 32. A scale is provided on the main shaft 32 and it is arranged that when this reads zero and when a mark on the squared end of shaft 56 is uppermost, then the mark on the ring 97 is visible in the window 99. After an overload cut-out, therefore, the shaft 32 is turned to read zero and the shaft 56 is turned, if necessary, until the marks correspond, and the indicator 76 is moved back to the Fig. 5 position before restarting the machine. It is stated that the overload coupling may operate an acoustic or optical warning device and that it may be applied to the drives for other moving parts of a loom or other weaving or knitting machines, or to any other machinery.
Patent GB-246827-A (GB)
Title: Method of separating aluminium nitrate from potassium, sodium, iron, calcium, magnesium nitrates, present in mixed solutions of these salts
IPC: C01F7/66
Filed: 1926-01-18
Abstract: 246,827. S.I.P. Soc. Italiana Potassia. Jan. 28, 1925, [Convention date]. Alkali metal compounds, obtaining from complex silicates.-Aluminium nitrate is separated from solutions containing other nitrates such as those obtained by treating aluminous minerals such as leucite with nitric acid, by adding nitric acid. A small quantity of nitric acid is sufficient to initiate the crystallization of aluminium nitrate, the speed of separation being dependent upon the quantity of nitric acid added. Specification 176,770 is referred to.
Patent GB-696946-A (GB)
Title: Improvements in or relating to egg cups
Inventor: HUCKFIELD JOHN ROBERT
IPC: A47G19/28
Filed: 1950-01-19
Abstract: 696,946. Egg cup cosies; salt pourers. PERRY BEVAN & CO., Ltd. Jan. 18, 1951 [Jan. 19, 1950], No. 1388/50. Class 128 An egg cup 7 has a cosy incorporating a salt holder e,g, a chamber. The salt chamber. which may be closed by a detachable lid 13 having an outlet nozzle 14 serving as a knob, may be the space 12 between an outer truncated dome 9a and an inner dome 9, or a recess 12a, Fig. 3 (not shown), in a single-domed cosy. Heat-insulating linings 10 and 8 e.g. of felt, may be provided in the cosy and cup.
Patent GB-1279364-A (GB)
Title: Method and apparatus for improving fuel combustion in internal combustion engines
Inventor: AUGUST PAUL
IPC: F02M23/08
Filed: 1971-01-12
Abstract: 1279364 Carburetters ATOX TRUST REG 12 Jan 1971 [11 Dec 1970] 1409/71 Heading F1B When the carburetter throttle valve (not shown) is closing at the commencement of over-run, a lever 2 fast with the rod 1 of the throttle valve comes against a plunger 7<SP>1</SP> and moves the plunger and a slide valve 22 to the right against the action of a weak spring 16, whereby a land 11 of the slide valve moves to allow flow of additional air through a conduit 17. Subsequently, the land 11 abuts the end of a piston rod 13. Further movement is retarded by a dashpot piston 5. Initially, air can enter behind the dashpot piston 5 only through a restrictor 20, so that movement is only slight for the first 5 or 6 seconds. Subsequent movement becomes more rapid as the piston 5 passes an increasing number of air holes 19. Eventually, the head 9 of the plunger 7 abuts a collar 12 and moves it to the right to re-close the air conduit 17. When the throttle valve is re-opened, the air conduit 17 remains closed, initially by the collar 12 and subsequently by the land 11 as shown. The additional air may be supplied through a separate valve controlled by the delaying mechanism and operated by negative pressure or by electrical or electronic means.
Patent GB-1381257-A (GB)
Title: Basic lead styphnate
IPC: C07C205/24
Filed: 1962-01-15
Abstract: 1381257 Lead styphnate AVIATION MINISTER OF 10 April 1963 [15 Jan 1962] 1478/62 Heading C2C  Basic lead styphnate in the beta polymorphic form is made by reacting an aqueous solution of a salt of styphnic acid containing 2-nitroresorcinol with an aqueous solution of a lead salt. The 2-nitroresorcinol may be present in an amount of 0À1 to 5% by weight based on the styphnic acid content. In examples (1) sodium carbonate is added to a dispersion of styphnic acid and 2-nitroresorcinol inwater; the solution is mixed with sodium hydroxide solution and added to lead nitrate solution at 70 C.; (2) a solution containing lead acetate and ammonia is added to a solution containing styphnic acid, 2-nitroresorcinol and ammonia at 75 C. The precipitated product in each case is washed and dried and forms free flowing granules of reduced sensitivity to ignition by an electrostatic spark; it may be used as a primary explosive or as a constituent of priming and delay compositions.
Patent GB-157953-A (GB)
Title: Hollow body of sheet metal having rib-like stiffenings, adapted for use as hulls & wings of flying machines
IPC: B64C1/00
Filed: 1921-01-10
Abstract: 157,953. Zeppelin-Werk Lindau Ges., and Dornier, C. Nov. 10, 1917, [Convention date]. Addition to 157,265. Planes, construction of; cars.-Hollow sheetmetal bodies, particularly the hulls and wings of flying machines, strengthened by ribs which cross each other without interruption, have the ribs secured on opposite sides of the metal skin. Fig. 2 shows a cross-section of a flying-machine body in which the metal skin A is strengthened on the inside bv transverse ribs B of the section shown and on the outside by longitudinal ribs C of similar section. Fig. 4 shows a section from root to tip of a metal wing in which the spars are replaced by ribs D secured to the inside of the metal skin, which is further strengthened on the outside by ribs F. When the span is large, additional bracing G may be employed. A modification is described in which the positions of the ribs D, F are reversed.
Patent GB-1449713-A (GB)
Title: Gas cushion vehicle
IPC: B60V1/00
Filed: 1974-01-14
Abstract: 1449713 Air cushion vehicles VOSPER THORNYCROFT Ltd 10 Oct 1974 [14 Jan 1974] 01729/74 Heading B7K An air cushion vehicle has at least one outlet from the cushion leading to a laterally directed discharge port above the cushion and outlet control means whereby the vehicle may be controlled in direction, pitch and heave. To facilitate heave control there may be in addition a vertically directed outlet. A vehicle has a hull 11, cushion 12, outlet duct 14 and outlet control valves 15, 15a, to control flow through outlet ports 16, 16a. In a further embodiment, Fig. 4, not shown, there are a number of outlets arranged peripherally of the vehicle and in a still further embodiment, Fig. 5, not shown, there may be a central rotatable outlet.
Patent GB-272412-A (GB)
Title: Means for measuring the thickness of tubes or rods in particular of glass
IPC: G01B5/10
Filed: 1927-01-20
Abstract: 272,412. Soc. du Verre Sili-Chrome, and Pink, H. Jan, 20, 1927. Addition to 265,555. Linear-dimension gauges.-The device of the parent invention for measuring the thickness of tubes or rods is modified by the provision of two feeler rollers, each mounted on a pivoted lever, and adapted to press resiliently against the continuously fed work, one roller acting on a pointer and the other on a coaxial rotatable scale. The two rollers 13, 14 between which the glass rod &c. 1 is fed are loosely rotatable on levers 15, 16 pivotally mounted on a bracket 17. To the lower lever 16 is secured a vertical tube 18 and on the upper lever 15 is secured a tube 19 telescopically arranged within the tube 18, the latter being slotted to permit passage of the lever 15. The tube 19 is provided at the upper end with a cross bar 21 guided in slots in the outer tube 18. To the free end of the cross bar 21 is secured a metal strap 23 the other end of which is anchored to a toothed segment 26 which operates a pointer 33 through a pinion 36, while a similar cross bar on the tube 18 is connected bv a band to a quadrant moving a scale 34 pivoting concentrically with the pointer. Between the upper free end of the tubes 18, 19 is arranged a spring 30 tending to press the tubes apart and thus the rollers 13, 14 towards each other. On variations occurring in the diameter of the rod 1, the rollers move relativelv and their movements are transmitted independently to the pointer and scale the relative position of which indicates the diameter.
Patent GB-571106-A (GB)
Title: Improvements in photographic stencils for etching designs
IPC: G03F7/06
Filed: 1944-01-31
Abstract: 571,106. Photographic stencils. KODAK, Ltd., and BLABER, M. P. W. Jan. 31, 1944, No. 1794. [Class 98 (ii)] An abrasively-etched image is formed on a surface by first forming on the surface a photographic stencil of the desired image, applying to the stencil, but not to the base areas, a layer of rubber, and then abrasively etching. The stencil may be first formed on another support and transferred to the surface to be etched before or after the further layer is applied thereto. The surface to be etched may be first coated with the rubber layer and then after producing thereon or applying thereto the stencil, the underlayer is removed where not protected by the stencil. The stencil may be applied to a curved surface to be etched. A gelatine stencil may be soaked in a solution of a substance coagulating rubber latex (e.g. aluminium sulphate), excess solution wiped off, the stencil dried, and then bathed in liquid rubber latex. The layer may be rendered tacky by adding emulsified mineral oil to the latex or by treating the coagulated layer with a swelling agent. In example 1, a stencil is formed on a glass plate coated with a process-type gelatinosilver halide emulsion by exposure, development, and etch-bleaching with an acid cupric halide hydrogen peroxide bath. The stencil is washed, dried, and soaked in saturated aqueous aluminium sulphate solution, excess solution blotted off, the stencil dried and then bathed in rubber latex and rinsed in water, and then finally dried. The rubber layer may be applied from a roller. Where the surface to be etched is curved, the exposure or one or more of the processing steps may be performed before transfer. The stencil may also be formed by tanning development and other processes. Specification 554,300 is referred to.
Patent GB-250180-A (GB)
IPC: A01N25/24
Filed: 1926-01-21
Abstract: 250,180. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbenfabriken vorm. F. Bayer & Co.). April 3, 1925, [Convention date]. Insecticides.-Horticultural insecticides, such as calcium arsenate and insoluble copper compounds, to be applied in powder form, are mixed with small proportions of compounds produced by treating alkali cellulose with the alkali salt of a halogenated fatty acid such as chloracetic acid, as described in Specification 138,116, [Class 2 (ii), Cellulose &c.), so as to promote adhesion to the plants. Mixtures of insecticidal powders with molasses or flour are referred to.