baber/WOPTO huggingface dataset:
Patent GB-709564-A (GB)
Title: Improvements in or relating to the production of bis-alkoxyaryl halo-alkylidene compounds
Inventor: JOHNSON CARL EDWIN
Filed: 1951-03-29
Abstract: Bis-alkoxy aryl halo-alkylidene compounds are prepared by contacting an aryl-alkyl or cycloalkyl ether containing at least one replaceable nuclear hydrogen atom with an a -halo alkanal or a compound yielding said alkanal under the reaction conditions, and a catalytic quantity of an organic sulphonic acid at a temperature sufficient to effect a water-producing condensation between two mols. of the ether and one mol. of the alkanal but not greater than approximately 125 DEG  C. in the absence of sulphuric acid or oleum.  Specified sulphonic acids are the mono- and polysulphonic acids of benzene, toluene, xylenes, cymenes, tert.-butyl benzene, chlorbenzene, naphthalene, methyl naphthalenes and diphenyl, aralkyl sulphonic acids, e.g. beta-phenyl ethane sulphonic acid and, preferably, C1-C5 alkane sulphonic acids which may be prepared as described in Specification 645,268. Suitable ethereal reactants are the methyl, ethyl, isopropyl, tert.-butyl, tert.-octyl, lauryl, n-hexadecyl, cyclopentyl, cyclohexyl, methyl cyclopentyl and methyl cyclohexyl ethers of phenol, nuclear substituted phenols, naphthols and hydroxy diphenyls and also the alkyl or cycloalkyl ethers of polyhydroxy aryl compounds such as resorcinol, pyrogallol, catechol, dihydroxy naphthalenes and dihydroxy diphenyls, e.g. catechol diethyl ether and 1 : 3-benzodioxol.  Specified a -halo alkanals which may be used as such or in the form of their acetals, alcoholates or hydrates, are chloral, tribromacetaldehyde, monofluoroacetaldehyde, difluorchloracetaldehyde, dichlorofluoroacetaldehyde, dibromoacetaldehyde, a  - chloropropionaldehyde, a  - dichlorobutyraldehyde, a  - chlorononanal, a  - iodononanal, a  - dichloroheptanal and a -bromo-octanal.  The mol. ratio of the ether to the alkanal may be varied between about 1 and 6, preferably between 2 and 2.5.  The mol. ratio of catalyst to alkanal may be as high as 12 if the water of reaction is not removed and otherwise may be 0.1 or lower.  Reaction temperatures are generally above 10-15 DEG C. but not more than 120-125 DEG  C.  The reactants are mixed vigorously, e.g. by means of mechanical agitation or passage through orifice mixers.  The water of reaction may be removed as formed by distilling it at suitable temperatures and pressures and, if desired, inert entrainers or azeotropic materials, e.g. n-heptane, benzene, toluene, chloroform or ethyl acetate may be used.  In an example, chloral and anisole are reacted together in presence of ethane sulphonic acid to yield 1,1,1-trichloro-2,2-bis-(para-methoxyl phenyl) ethane.  One or more ethers may be reacted with one or more alkanals giving mixed reaction products such as 1,1,1-trichloro-2-methoxyphenyl, 2 (3,4-dioxymethylene-phenyl) ethane from the reaction of anisole and catechol methylene ether with chloral; this product and the ethoxy analogue of D.D.T. are stated to be insecticides.
Patent GB-910240-A (GB)
Title: Improvements in or relating to steam turbines
Inventor: MITCHELL JOHN MACKENZIE
IPC: F01D5/22
Filed: 1959-12-07
Abstract: 910,240. Turbine blades. GENERAL ELECTRIC CO. Ltd. Dec. 1, 1960 [Dec. 7, 1959], No. 7411/62. Divided out of 910,239. Addition to 770,528. Drawings to Specification. Class 110 (3). In an axial-flow steam turbine rotor, the turbine blades are braced by a stiffening band secured thereto, the blade tips extending beyond the stiffening band which constitutes the sole bracing for the blade tips, and the band is formed by radially inwardly-directed arched beam-like members, each member being secured between two adjacent blades. The embodiment described is a modification of the turbine blading in the parent Specification and forms substantially the subject-matter of Specification 910,239, but the claims differ.
Patent GB-198467-A (GB)
Title: Electric power accumulator
IPC: H05F7/00
Filed: 1922-03-14
Abstract: 198,467. Bartholomew, G. A. March 14,1922. Earth cells; electrodes.-An apparatus for generating and storing electricity comprises a battery of zinc and copper or other metal plates which may be activated by being immersed in water or buried in the earth, and an accumulator consisting of plates of dissimilar metals immersed in water or a mixture of coke and lime and salt water. The Figure shows a form in which X and Y are the batteries supplying current to an accumulator Z. The battery X consists of galvanized iron and copper discs 42 supported by an insulated bolt 43 and separated by metal and insulating washers 46, 45. The battery may be buried in the ground or simply moistened. The battery Y and accumulator Z are similar to the battery X but are immersed in water. The plates of the accumulator may however be contained in a vessel filled with coke and lime and salt water.
Patent GB-812686-A (GB)
Title: Improvements in or relating to apparatus for indicating the rate of variation of a quantity
Inventor: ANTRICH DAVID
IPC: G01P15/16
Filed: 1955-03-15
Abstract: 812,686. Electric tests. GENERAL ELECTRIC CO. Ltd. March 15, 1956 [March 15, 1955], No. 7541/55. Class 37. [Also in Group XXXVIII] The rate of change of a voltage representing the speed of a turbine shaft, determined by charging a condenser 5 in series with indicating device 6. Thus if the shaft speeds up, the charge increases and the change is indicated on indicator 6. A resistor 9 across the condenser and indicator enables the charge on the condenser to fall to actuate deceleration. Device 6 may be a relay to effect control of the turbine by operating an oil pilot valve in the loop between the steam re-heater and the intermediate pressure stage of a threestage turbine. The D.C. condenser charging voltage is derived from an alternating output from a tachometer generator whose frequency is proportional to the speed of the turbine and which is applied across resonant circuit 2, 3, to give an alternating voltage proportional to frequency which is then rectified at 4.
Patent GB-157011-A (GB)
Title: Improvements in switch and fuse contacts
IPC: H01H1/42
Filed: 1920-03-13
Abstract: 157,011. Watson, J. F., and Callender's Cable & Construction Co., Ltd. March 13, 1920. Contacts are formed with a jaw having solid side pieces b and a flat-sided hollow removable spring c between the side pieces. Blades g engage between each side piece and one side oi the spring. The spring c is secured by a screw d, and preferably a washer h. By tightening the screw, the contact pressure may be adjustable, and if necessary the blades may be so clamped in contact with the side pieces.
Patent GB-711928-A (GB)
Title: Safety device for projectiles
IPC: F42C15/24
Filed: 1952-03-24
Abstract: 711,928. Ammunition projectiles; fuzes. ANSTALT FUR DIE ENTWICKLUNG VON ERFINDUNGEN UND GEWERBLICHEN ANWENDUNGEN ENERGA. March 24, 1952 [April 24, 1951], No. 7563/52. Addition to 620,875. Class 9(1)  A projectile fuze as described in the parent Specification having an obturator operated by a thrust member has a valve attached to the thrust member to close the flash passage until the obturator is completely released. A grenade 2 containing a hollow charge 6 is provided with a safety device 1 interposed between the nose fuze 3 and a detonator 4. Surrounding the detonator is a booster charge 5 which initiates the hollow charge, the cavity of the charge 6 being provided with a liner 7. The safety device has 'a casing 1a housing a hollow obturator member 9 provided with two projections 10 engaging zig-zag grooves 11 in a support 12. An ejection spring 13 holding the projections 10 in the blind parts of the grooves 11 is attached at one end to a nipple 15 fixed in the obturator and at the other end to a plug 16 seated in the support 12. The outer surface of the obturator 9 has grooves 18 forming a baffle for the ignition gases. On firing the grenade, the obturator 9 sets back due to inertia, the projections 10 moving along the blind part of the groove 11 thus compressing the spring 13. When acceleration ceases, the spring pushes the member 9 forwards. The projections 10 move along the open branches of the grooves until the member 9 leaves the housing 1a thus removing the plug 16 from its seating and freeing the flash passage to the detonator. The obturator 9 with its attached spring falls into the cavity 8 and lodges near the primer 14 attached to the nose fuze 3.
Patent GB-415800-A (GB)
Title: Improvements in mechanism for applying bands to cigars and like articles
IPC: A24D1/16
Filed: 1933-02-28
Abstract: 415,800. Cigar banding machines. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(International Cigar Machinery Co. ; 5520, 2nd Avenue, Brooklyn, New York, U.S.A.) Feb. 28, 1933, No. 7591/34. Divided application. [Class 73.] A cigar-banding machine comprises rotary, pneumatic means for separating a band from a pile, presenting it to a moistening device and then to means for folding the band round the cigar, the folding devices comprising a pair of arms which move towards the cigar and each other so as to fold the ends down the sides of the cigar and smooth them, and a further pair of folders moving transversely to finish the folding, one of them being adapted to enter between the two separate parts of the other. The cigars are fed by conveyers from a wrapping- machine, and the bands are taken from a magazine 286, Fig. 3, by a four-armed suction separator 275 which first presents the band to an intermittently rotated moistening disc 289, against which it is pressed by an arm 305 operated by a cam-actuated link 300, and then to the banding station. The separator is driven by a gear train including a Geneva stop from a shaft 265 and is carried by a casing 273 which is reciprocated vertically about the shaft 272 to present one arm to the bottom of the pile and the opposite arm to the banding position. The ends of the band are folded along the sides of the cigar by a pair of arms 309, 310, Fig. 5, pivoted on a plate 311 vertically reciprocated by a cam-actuated link 314; the arms are interconnected by gear segments and one has an extension riding on a fixed cam plate 322. As the arms descend they approach each other and fold the ends along the sides of the cigar, continued movement smoothing the band. The ends of the band are then folded by fingers 325 and a roller 346. The fingers 325 are mounted on a head 330 which is reciprocated by a rack and pinion. The roller 346 is mounted on a similarly actuated head, and a wedge 359, also carried by the head 351, separates the fingers 325 to enable the roller to press down the overlapping end of the band. The arms 309, 310 are then opened to release the cigar by means of a cam plate 364 on the shaft 274.
Patent GB-1142944-A (GB)
Title: Line sequential color television systems
IPC: H04N11/08
Filed: 1966-02-22
Abstract: 1,142,944. Colour television. GENERAL CORP. 22 Feb., 1966 [27 Feb., 1965], No. 7632/66. Heading H4F. In a three-colour line-sequential colour system using odd line interlaced scanning (i.e. two fields per frame) and a number of lines per frame which is not an integral multiple of three (625 in the system disclosed) the colour sequence is not continuous but is controlled as shown in Fig. 5, so that the sequence is interrupted and restarted with a predetermined colour (i.e. red) at the second line of the first field of each frame and with the same colour at the first line of each second field. By this means the crawling colour pattern which occurs with a continuous sequence is eliminated. The control of the sequence is effected as illustrated in Fig. 19 by separating the odd and even field synchronizing signals, delaying the odd signals for the duration of one line and then recombining the signals to form a composite signal train which controls both the start of the colour sequence and the production of a colour synchronizing " burst " for insertion in the back porch interval preceding each red line. The invention is described as applied to a system, Fig. 14 (not shown), in which received N.T.S.C. signals are converted to linesequential signals, which are recorded magnetically and subsequently reproduced by a line-sequential receiver using a post-deflection, beam-switching, cathode-ray tube. The conversion of the N.T.S.C. signal is effected by demodulating the chrominance subcarrier component with a reference oscillation which is modulated so as to change phase in line sequence to the three angles which are necessary to obtain the colour difference signals R-Y, G-Y and B-Y. These signals are then combined with the luminance signal to form a normal line-sequential signal. The phase modulation of the reference oscillation is produced by a three-step wave which is generated under the control of the received horizontal synchronizing pulses and started in correct phase in each field by the odd and even field synchronizing signals in the manner described above with reference to Fig. 19. The synchronizing " bursts " which are added to the signal before each red line have a frequency (e.g. 2 Mc/s.) within the recording capability of a magnetic recorder. Suitable arrangements for separating the odd and even field synchronizing signals are described with reference to Figs. 8-12 (not shown). In the line-sequential colour receiver for use with the system the colour switching grids of the cathode-ray tube are controlled by a three-step wave, similar to that shown in Fig. 19, which is derived under the control of horizontal synchronizing pulses and established in the correct phase by the synchronizing " bursts ". In arrangements in which the number of scanning lines leaves two after division by three the odd field synchronizing signal may be advanced in time by one line period or the even field signal may be delayed by one line period.
Patent GB-125252-A (GB)
Title: Improvements in or relating to Electrical Relays.
Inventor: BROWN SIDNEY GEORGE
IPC: H01H53/015
Filed: 1918-05-07
Abstract: 125,252. Brown, S. G. May 7, 1918. Non - contact - making relays.-A non - circuit-closing relay comprises two wire spirals normally heated by electric currents and connected in opposing circuits; and the balance of the circuits is upset by the movements of a coil which causes one spiral to contract and the other to expand, thereby varying the radiation of heat from the spirals and consequently their resistances. The coil 4, Fig. 1, is pivotally mounted between the poles of a permanent magnet 2 and carries an arm 14 to the ends of which are attached two wire spirals 16, Figs. 1 and 4. The spirals 16 are normally retained at red heat and upon the movement of the coil 4 one spiral is contracted and the other is expanded to vary their resistances and thereby energize a recorder, indicator, or secondary relay 29, Fig. 4. Current is supplied to the insulated arm 14 by a coiled wire 24 and the movements of the arm are limited by stops 22 carrying pieces of insulation 23.
Patent GB-1168068-A (GB)
Title: Electric Warning Device
Inventor: KLEIN H C
IPC: B60T17/22
Filed: 1967-07-18
Abstract: 1,168,068. Brake indicators. ALFRED TEVES G.m.b.H. 18 July, 1967 [7 Dec., 1966], No. 7659/69. Divided out of 1,155,990. Heading F2E. A failure indicator for a dual circuit brake system comprises first and second pressuresensitive switches 2, 4 an indicator lamp 9 and switch 33 operated by excessive travel of the brake pedal and a diode 35. When the system functions correctly, application of the brake causes switch 2 to close lighting stop light 3 and switch 4 to open. Indicator 9 is therefore not lit, as the brake pedal travel is normally insufficient to close switch 33. If the brake circuit including switch 4 fails, switch 4 remains closed and closure of switch 2 lights indicator 9. If the other circuit fails, or if both fail, the increased brake pedal travel closes switch 33 to light the indicator.
Patent GB-253990-A (GB)
Title: Improvements in or relating to the manufacture of tennis and like rackets
IPC: B27M3/22
Filed: 1925-03-23
Abstract: 253,990. Deeman, S. March 23, 1925. Rackets.-Tennis and like rackets are manufactured by bending the racket frame roughly to shape, applying the wedge (previously cut to its true shape) in position between the handle portions of the frame and securing by glue or otherwise, clamping the roughly constructed racket frame upon a gauge of determined contour, removing the excess material from the interior of the frame, clamping the frame upon another gauge and removing the excess material from the exterior of the frame. The racket frame a, Fig. 3, with the wedge a<1> in position is placed in the first gauge comprising a base c fitted with a sliding upper portion d. A wooden block d<2> is secured to the sliding portion, and two blocks c<4> are secured to the base so that the racket frame may be calmped between the blocks by operating a screw e. A central space c<1> corresponding to the inner contour of the racket frame is enclosed by the parts, and a, lap joint c<3> ensures un unbroken contour during adjustment. After clamping, the excess material is removed from the interior of the frame and from the upper edge of the wedge. The frame is now transferred to the gauge shown in Fig. 5, comprising a base plate f with a movable upper part g to which is attached a wooden block g<1> having a contour corresponding to the interior of the upper portion of the racket frame. The base plate f has two pairs of lugs f<1>, f<2> through which two bolts f<3> are arranged to slide. The bolts are secured at their upper ends to the movable part g. A cross bar h is slidably mounted on the bolts and carries a wooden block h<1> having an exterior contour corresponding to the interior of the lower portion of the racket frame. After positioning the racket frame on the blocks g', h', the blocks may be moved apart by rotating two cams g<2>, h<2> by a suitable operating key thus clamping the racket frame in readiness for trimming the outer contour. The cam g<2> effects the coarse adjustment, finer adjustment being effected by the cam h<2>. Springs i<1>, i<2> return the blocks after release by the cams. A pin f<5> acts as an additional guide for the lower block. The wedge piece a' is shaped before assembling within the frame, by the use of a known form of gauge shown in Fig. 2.
Patent GB-1141286-A (GB)
Title: Automatic door closing mechanism
IPC: E05F3/10
Filed: 1966-02-23
Abstract: 1,141,286. Spring door closers. P. M. FEMENIA. 23 Feb., 1966 [2 March, 1965], No. 7873/66. Heading E2M. In a spring door closer, adjustably mounted in the floor beneath the door, rotation of a door pivot 4 and of an eccentric 6, rigidly mounted thereon and bearing on .rollers 7 of a movable element, causes the movable element, comprising side members 2 and plates 3, to move towards a partition 14 compressing springs 12 on guide rods 11 between rings 13 and the partition 14, the closing motion caused by these springs on release of the door is opposed by a third roller 8 mounted on a piston rod 9 and bearing on the eccentric. The piston rod moves in a hydraulic cylinder 10, the braking effect of which can be varied by Screws 17 and 18, and is urged towards the eccentric by an internal spring.
Patent GB-350907-A (GB)
Title: Improvements in machines for embossing fabrics
IPC: D06C23/00
Filed: 1930-03-11
Abstract: 350,907. Embossing and pleating fabrics. MILLER, J. and HARTMAN, I., 152, City Road, London. March 11, 1930, No. 7946. [Class 100 (ii).] In a machine for embossing dress materials and other fabrics, the fabric 4 is fed between two thin flat forming and embossing plates v, w having correspondingly shaped edges to form ornamental tucking, the plates being moved first with a rocking motion past each other, and then towards each other to hold a fold of the fabric between them, and pressure then being applied between a heated bar q and a presser bar 5. The plates v, w are mounted respectively on bars s, x pivoted at t, y on lever f, j carrying at their free ends rollers g, k engaging edge cams d, c on a driving shaft b; a spring m connected between the levers maintains engagement with the cams. The lever f is adjustably pivoted in a slot i in the framework a, and the rocking movement of the plate v is effected by contact of the bar against a pin u on the framework. The lever j has a fixed pivot at l, and the bar x is rocked by means of a spring 3 and a slotted link 1 engaging a pin 2 on a slide o, which is mounted in a guideway n and actuated by a face cam e on the shaft b. When the slide o moves to the right the plate w is tilted away from the heated bar q, into the position shown. When the slide o commences to move to the left, the plate w is returned by the spring 3 to press the fabric against the heated bar q and slight pressure is applied over the plates and fabric by the presser bar 5, which is mounted in a guideway 6 in the slide o against a spring 7, and ultimately comes into contact with a stop-screw 8 to apply greater pressure when the plates v, w have been withdrawn by outward movement of their levers. The presser bar 5 is covered with felt or other soft material 9 so that the fabric is pressed although the plates v, w may intervene.
Patent GB-108467-A (GB)
Title: Improvements in or relating to Electric Spark-gap Protective Devices.
Inventor: GILES GEORGES
IPC: H01T1/14
Filed: 1917-06-02
Abstract: 108,467. Giles, G. June 26, 1916, [Convention date]. Protective arrangements.-A device for the discharge of abnormal potentials consists of a spark gap e, d, f in series with a switch i, g. Under normal voltage conditions the contact i, mounted on a pulley j, engages the contact g by the action of a wire o on the pulley j. When an abnormal voltage occurs, the discharge current passes in parallel through the wire o and inductive resistance n and through a non-inductive resistance m. The expansion of the wire o due to the passage of a portion of the discharge current allows a spring k to open the switch i, g thereby breaking the discharge path which is again closed by the cooling of the wire o.