baber/WOPTO huggingface dataset:
Patent GB-628054-A (GB)
Title: Improvements in or relating to electrically insulating coatings on ferrous metals
IPC: C23C22/74
Filed: 1947-05-05
Abstract: A ferrous surface is provided with an adherent film of high ohmic and corrosion resistance by applying to it a composition of from 1 to 30 per cent by weight of one or more acids selected from the group fluosilicic, silicotungstic and phosphotungstic acids, from 10 to 50 per cent of phosphoric acid and the balance water, and heating the coated surface at a temperature of from 400 DEG  to 1200 DEG  C., to react the composition with the ferrous surface. Magnetic sheet material, e.g. silicon iron, may be coated by passing the sheet through the composition, through squeeze rolls and then through an oven for the heat-treatment.ALSO:A ferrous surface is provided with an adherent film of high ohmic resistance by applying to it a composition of from 1 to 30 per cent by weight of one or more acids of the group fluosilicic, silicotungstic and phosphotungstic acids, from 10 to 50 per cent of phosphoric acid and the balance water and heating the coated surface at a temperature of from 400 DEG C.-1200 DEG C. to react the composition with the ferrous surface.  Magnetic sheet material, e.g. silicon iron containing 1 per cent to 7 per cent silicon, may be coated by passing the sheet through the composition, through squeeze rolls and then through an oven for the heat-treatment, after which it may be wound on a rectangular mandrel to form a laminated magnetic core.  This may be finally annealed at a temperature of 600 DEG C.-1250 DEG C.
Patent GB-924144-A (GB)
Title: A flame controller
Filed: 1959-04-10
Abstract: 924,144. Photo-electric control of oil burners. A. ARGAMAKOFF. April 10, 1959 [April 10, 1958], No. 12151/59. Class 40 (3). [Also in Group XI] In a flame controller for an oil burner incorporating a photo-conductive cell 1 to observe the flame, the cell is connected in series with a thermistor 2 to form a voltage divider from the junction point of which a control potential is derived, the thermistor being located in the vicinity of the cell and having the same heat dependent charcteristic whereby it compensates for the effect of heat radiation on the cell and the control potential is determined solely by light radiation emanating from the burner flame. The control potential is applied to operate a relay 2 by way of a transistor 31. The controller operation is initiated by a thermostat 12 (which may be connected as shown in either the primary or secondary of the main supply transformer 16 for the controller) and the timing of the controller operation is determined by three bimetallic elements 6, 7, 8 which are heated by resistive elements 17, 18, 19 and operate in the sequence 6, 7, 8. The first, after an interval to allow the escape of gases from any previous combustion, energizes ignition element 24, the second, after an interval to allow the ignition element to become clean, completes the circuit for the burner supply motor 10, and the third, after an interval to allow for combustion, switches off the system unless flame has appeared in which case photo-electric cell 1 operates relay 2 and at contact 4 provides a holding circuit for the motor. Contact 3 interrupts the circuit to the resistance elements 17, 18, 19. If during operations the flame fails, the controller automatically initiates a further sequence of operations to re-start the burner. Bi-metallic elements 8 may be re-operated by manual means 54 to initiate a sequence of operations following an unsuccessful attempt to start the burner. In two other embodiments, Figs. 2 and 3 (not shown), the D.C. supply to the photo-electric cell, transistor and relay circuit (which is derived from the main supply transformer 16 by rectifier circuit 29, 30) is completed via a contact which is closed when bi-metallic element 7 operates, a holding connection being provided by a contact of relay 2 to allow for the subsequent release of the bi-metallic elements. In Fig. 1, photo-electric cell 1 is chosen to be substantially insensitive to infra-red radiation, a cadmium sulphide being suggested as suitable. In other embodiments, Figs. 3 and 4 (not shown), the cell is chosen to be infra-red responsive so as to be influenced by the fluctuating component of the light output of the flame. The cell output is applied to control the relay through capacitive coupling circuits so as to eliminate the signal due to the steady component of the flame. In Fig. 4, a transistor amplifier precedes the transistor which controls the relay. Leadsulphide, germanium and silicon cells are suggested as suitable infra-red sensitive cells.
Patent GB-572699-A (GB)
Title: Improvements in or relating to bombs, grenades or like projectiles
IPC: F42B30/04
Filed: 1940-07-27
Abstract: 572,699. Bombs. BLACKER, L. V. S. July 27, 1940, No. 12245. [Classes 9 (i) and 92 (ii)] Relates to bombs of the kind having a propellent charge 7 located in a tail tube 2a which engages over a spigot 9 forming the throwing- device. According to the invention, the charge 7 is wholly or in part contained within a cupshaped member 6 which is expanded radially by the gas pressure to form a gas seal. As shown, the charge 7 is completely enclosed by two cup-shaped members 6, 6a, the member 6 being recessed into the spigot 9 and carrying the cap or detonator 8 which is struck by a firing-pin 11 sliding in the spigot. Firing is effected by a hammer 12 engaged by a rotary cam 14. The bomb comprises a chamber 1 for the bursting-charge, the tail tube 2a screwed into a base 2, the fairing 5, and a drum-shaped tail 3 with vanes 4. The rear part of the throwing-device may be extended to engage the ground by means of a spade and may include a hydro-pneumatic buffer device. Specification 125,771, [Class 9 (i)], is referred to.
Patent GB-1253790-A (GB)
Title: Optical absorption photometer
Inventor: WATSON EMMETT ST CLAIR
IPC: G01N21/33
Filed: 1968-10-28
Abstract: 1,253,790. Photometric analysis. PICKER CORP. Oct. 28, 1968 [March 21, 1968], No. 12260/71. Divided out of 1, 252, 742. Heading G1A. The description is the same as that of the parent but the claim is directed to apparatus for providing a non-linear indication of the ratio between the electrical resistances of two resistors at least one of which is variable, which includes a Wheatstone bridge including the resistors therein, a voltage divider connected across the output of the bridge, a power supply connected to energise the bridge and having a feedback voltage derived through a feedback line from a pre-selected point on the voltage divider, the output of the power supply being variable in response to the feedback voltage to maintain the feedback voltage at a substantially constant value, and indicating means responsive to the output of the bridge.
Patent GB-397432-A (GB)
Title: Improvements in crystallizers
IPC: B01D9/00
Filed: 1933-04-27
Abstract: <PICT:0397432/III/1> A crystallizer 1 is provided with inner and outer non-tubular helical coaxial stirring blades 10, 8 mounted on an axis 3, the helical flights of the stirrers being oppositely directed so that the outer flight propels the liquid in the opposite direction to the inner flight.
Patent GB-428437-A (GB)
Title: Improvements in power transmission devices
IPC: F16D3/04
Filed: 1933-11-03
Abstract: 428,437. Linkwork for conveying circular motion ; universal joints. STRANDGREN, C. B., 14, Rue Galieni, Versailles, France. Nov. 3, 1933, No. 12271 /35. Convention date, Nov. 26, 1932. Divided out of 430,002. [Classes 80 (ii) and 80 (iii)] Relates to a coupling of the kind in which the driven member follows exactly the rotary motion of the driver, more especially where the lateral spacing of the shafts is variable as in a drive for a motor vehicle or electric locomotive where the motor is mounted on the sprung part of the vehicle. The device may be used to drive the feathering paddle-wheel described in French Specification 700,476. A set of links 52, 53 are pivoted at the apices A<1>, A<2>, A3 of a regular polygon (as shown a triangle) on the driving (or driven) member A, and are connected by links 55 so as to remain parallel. The links 52 are pivoted at C, D, E to a set of links 54 pivoted to the driven (or driving) member B at B<1>, B<2>, B<3>. The pivot joints may be provided with needle bearings or with rubber bushes 2<a>, 6<a>, Fig. 3, to permit slight universal movement, or hinged joints may be provided in the links 54.
Patent GB-559758-A (GB)
Title: Improvements in the production of extracts of tea
IPC: A23F3/16
Filed: 1942-08-31
Abstract: 559,758. Tea &c. preparations. ARNDT, W., and HANSON & SON, Ltd., S. Aug. 31, 1942, Nos. 12272/42 and 4298/43. [Class 129] Extracts of tea &c. are made by infusing the leaves in cold water, e.g. between 10‹C or 25‹C. and then concentrating to paste or powder form. The leaves may be further extracted with hot water, e.g. at 85-C, and the product concentrated, and may be finally boiled for, say, half-an-hour, to extract all soluble constituents, this extract being also concentrated. The various extracts may be blended in any decimal proportions and milk, lemon essence, vitamins &c. may be added. The extracts may. be filtered to remove dust.
Patent GB-552063-A (GB)
Title: Improvements in or relating to electrical impulse transmission
IPC: H04Q1/442
Filed: 1941-09-23
Abstract: 552,063. Automatic exchange systems. BIRSS, R. R. Sept. 23, 1941, No. 12307. [Class 40 (iv)] [Also in Group XL] In an impulse receiving arrangement for correcting distorted A.C. impulses, the impulses after rectification are applied in parallel to the grids of two thermionic valves V1, V2 of which one V1 controls the responding relay A while the anode circuit of the other V2 is back-coupled through a transformer TR1 to the grid of the first in order to produce at the beginning and end of each impulse a voltage kick which assists and quickens of the response of the relay A. A second correcting stage may be used if one stage is insufficient, and the circuit described in Specification 552,062 may serve as the second stage. According to the Provisional Specification, the arrangement may also be employed for receiving direct current impulses having substantial voltage changes with little current.
Patent GB-437115-A (GB)
Title: Improvements relating to ribbed plate and tubular heat-exchangers
IPC: F28F1/42
Filed: 1934-04-24
Abstract: 437,115. Plate and gilled-tube heatexchangers. STRASSER, V., 12, Albertstrasse, Riga, April 24, 1934, No. 12351. [Class 64 (iii)] In a plate or tubular heat-exchanger provided with ribs a to guide a gaseous medium over the heat-exchange surfaces in streams, the ribs are formed with slots having inclined edges b to direct the streams from one side of a row of ribs to the other. An air heater is built up of a number of plates 1, 2, 3, with the ribs a on one side crossing ribs h on the other side. The part against which flame impinges is protected by a cap r of refractory material in front of which is an arch s and a steam or air tube t.
Patent GB-570253-A (GB)
Title: Improvements in or relating to mountings for vehicle wheels
IPC: B62K25/24
Filed: 1943-07-29
Abstract: 570,253. Motor-cycle &c. forks. BALLAMY, L. M., and SHEEPSHANKS, R. H. July 29, 1943, No. 12359. [Classes 136 (ii) and 136 (iii)] In a resilient wheel mounting of the fork type, particularly for a motor cycle, in which the axle pin 15 connects the free ends of a pair of substantially horizontal, spring-controlled arms 16, 17 pivoted at their other ends to the extremities of the fork blades 10, 11, the axle pin is shaped or adapted to interlock with both of the arms in order to hold them positively in alignment with each other. As shown, the wheel 12 is carried by a non-rotating axle pin 15 having (a) a head 24 adapted to bear against the forward end of the arm 17 ; (b) an adjacent splined part 25 engaging within a correspondingly shaped hole 26 in the arm 17 ; (c) a portion 27 of a diameter equal to or less than the root portion of the splined part 25 and fitting within a flanged circular bush 28 which acts as a bearing for the brake backplate 20 ; (d) reduced parts 29, 30 fitting within a thrust tube 31 carrying ball-bearings 32, 33 for the wheel hub 34 and oil seals 35, 36 ; (e) a further splined portion 43 fitting a correspondingly shaped hole in the arm 16 ; and (f) a screwthreaded spigot carrying a nut 46. By removing the nut 46, the axle pin 15 can be forced axially to the left and completely removed, thus enabling the wheel, thrust tube 31 and brake backplate 20 to be removed from between the arms 16, 17. Each arm is pivotally connected with the corresponding tubular fork blade by the means shown at the right-hand side of Fig. 2 in which a spindle 48 longitudinally splined for most of its length extends from a similarly shaped hole 50 in the arm 16 and has its other end fitted into a torsional rubber bearing 52 mounted in a housing 18 attached to the lower end of the tube 10. A bevel gear-wheel 53 on the splined part of the spindle 48 is in permanent mesh with a similar wheel or toothed sector 54 connected with a torsion bar 55 extending upwards within the tube 10, the torsional stress in the bar 55 being transmitted by the gearing 54, 53 and spindle 48 to press the arm 16 downwardly. The spindle 48 is also in splined engagement with the inner bush 56 of a main rubber torsion bearing 57 housed-within a tubular projection 58 on the inside of a closure plate 59 for the housing 18. The brake back-plate 20 is free'to rotate on the axle pin 15, but is anchored by a link 21 pivoted at 22 to the back-plate and at 23 to the housing 18. The arms 16, 17 may be integral with the end spindles or means other than the spindles may secure the arms to the fork structure so as to allow angular movement of the arms. The ends of the axle pin and spindles may be square or hexagonal in crosssection for engagement with correspondingly shaped holes in the arms, and splines of rectangular or other cross-section may be used. Specification 562,686 is referred to in the Provisional Specification.
Patent GB-1210145-A (GB)
Title: Fasteners for use with fastener driving tools
IPC: F16B19/14
Filed: 1968-03-14
Abstract: 1,210,145. Anchor bolts; nails. HILTI A.G. 14 March, 1968 [14 April, 1967], No. 12385/68. Heading F2H. A fastener which may be driven into hard material by a powder operated tool comprises a frusto-conical shank part 5 which is connected to a head 2 and which is provided with cross knurling or herringbone-like knurling. The fastener may be provided with a thread formation on its head, a cylindrical shank part 4 between the shank part 5 and a frustoconical portion 3 of the head 2, and an ogival tip 6.
Patent GB-462937-A (GB)
Title: Improvements in or relating to gas producers
IPC: C10J3/80
Filed: 1936-05-01
Abstract: 462,937. Gas producers. KRUPP AKT.-GES., F. May 1, 1936, No. 12390. Convention date, May 4, 1935. Addition to 462,933. [Class 55 (i)] The producer described in the parent Specification wherein the air-steam supply is introduced through a central pipe and the producer gases withdrawn through separate outlets in the periphery of the shaft, both being in the neighbourhood of the gasefication zone which assumes the form of a shallow cone, or as in a modification of a disc, the air supply and gas withdrawal being completely reversible, is modified by replacing the openings in the periphery of the shaft by an annular gap 4. Steam from a pipe 24 is supplied to an annular channel 8 surrounding the base of the shaft and issues through an adjustable aperture 7 where it mixes with the air supply through the gap 4. Both the gaps 4 and 7 are adjustable in width by movement of the spring plate 12 defining the aperture 7 and the independent slagcollecting chamber 6 relatively to each other, the spring plate and chamber 6 being interconnected by tension springs 13. In a modified form of the producer, the annular gap is replaced by a number of spaced openings surrounded by an air supply or gas withdrawal annular chamber of spiral form. In this modification, the perforated hood 16 of the central pipe 15 may be water or air-cooled; the water used may be admitted to the gasefication zone. When the air-steam mixture is supplied to this central pipe and the producer gases withdrawn at the periphery of the shaft, the air-steam mixture is controlled by a throttle valve in the pipe. Specification 218,804, [Class 55 (i)], is referred to.
Patent GB-716918-A (GB)
Title: Improvements in or relating to tobacco reservoirs and feeding means
IPC: A24C1/02
Filed: 1952-05-19
Abstract: 716,918. Opening and feeding tobacco. ARENCO AKTIEBOLAG. May 19, 1952 [May 22, 1951], No. 12641/52. Class 130 In tobacco opening and feeding means comprising firstly a reservoir having two upright side walls 5, Fig. 2, themselves rotatable to tumble the contained tobacco or, as shown, stationary and enclosing wheels 2 rotatable for this purpose, and secondly a feeding device, such as 'a gripper 26n, 26b, Fig. 1, for transferring tobacco from the reservoir as to a cigar bunch-making machine, the walls 5 or wheels 2 have central oppositely disposed and inwardly tapering hubs or equivalent members 24 to guide tobacco elevated during tumbling so as to present it to the feeding device. The wheels Z are shown as flanged discs each intermittently rotated from a driving shaft 6 through a cam 7, bell-crank 16, 12, link 13, pawl 18 and ratchet wheel 15, a fixedly pivoted pawl 42 preventing backlash. Rods 21 slidable in slots 20 in the wheels 2 have pins 22 engaged in cam grooves 53 in flanges 23 of the walls 5 so as to project the rods 21 to tumble tobacco and retract them to avoid fouling the gripper 26a, 26b. An arcuate plate 50 forming the reservoir bottom allows entry of the gripper 26a, 26b between its ends 51, 52. The gripper 26a, 26b is moved bodily into and out of the reservoir by a cam 66 on the shaft 6 and acting through a bell-crank 64, 62, link 61, and lever 27 pivoted about a fixed spindle 34, one gripper jaw 26a, which is fast on a spindle 28 rotatable in the lever 27, being maintained substantially vertical during such movement by arms 55, 29 fast on the spindles 34, 28 and connected by a link 30. A further arm 35 fast on the spindle 28 mounts rotatably a spindle 67 carrying the other gripper jaw 26b, intermeshing toothed quadrants (not shown), one fast on the spindle 67 and the other rotatable on the spindle 28 and fast with an arm 39, operating the jay 26b from a cam 49 on the shaft 6 through a bell-crank 46, 45, link 43, bellcrank 41 and link 40 so as to cause the gripper to open and then close both inside and outside the reservoir to pick up and discharge tobacco respectively. The gripper may be replaced by an endless conveyer movable in a bottom opening of the reservoir, and the wheels 2 may be of vaned construction. The hubs 24 or equivalent guide blades, which may be adjustable, may be on the walls 5 instead of on the wheels 2 and may project inwardly through central openings therein.
Patent GB-958025-A (GB)
Title: Method for providing automatic background correction in optical densitometry and apparatus therefor
Inventor: BUSH IAN ELCOCK
IPC: G01J3/12
Filed: 1960-04-08
Abstract: 958,025. Optical density measurement. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 6, 1961 [April 8, 1960], No. 12687/60. Heading G1A. In a method and apparatus for measuring the optical density of a substance absorbed by, or deposited on, a carrier material, a portion of the carrier is scanned alternately with light in a narrow wave-band including a maximum absorption wavelength of the substance, and with light in a narrow wave-band including a wavelength distant from that of any maximum absorption wavelength. A photoelectric system is used to detect the light transmitted or reflected by the carrier in each case, the resultant signals being compared to obtain a signal indicative of the optical density of the substance. In the embodiment described the photo-electric system comprises a photo-multiplier tube T. A scanning spot of light is generated by means of a rotating slotted disc R3 and slit S1 which receive light from a source not illustrated. The light spot is deflected by mirrors through a monochromator comprising a prism P, one or other of the Littrow mirrors L1, L2, and slot S2. Mirror L2 is periodically moved to the position shown in broken line, thereby changing the waveband of the light emerging from the slit from one value to the other. The light passes through the test sample Q, e.g. a filter paper, to the photo-multiplier. In this embodiment, the sample Q is moving continuously and, in order that the second waveband scan takes place over the same area as did the first, it is necessary to displace the second scan in the direction of motion of the sample. This is done by means of a transparent plate R2 which is periodically interposed between the slits S2 and S3. The detector output passes to a circuit which generates an output signal which is linear in respect to the logarithm of the light intensity. After amplification this signal is switched by means of an electronic switch to one or other of two integrating circuits, dependant upon which waveband is illuminating the sample. A meter and chart recorder receive the difference of the two integrated signals, this difference indicating the optical density of the substance. The electronic switches are controlled by means of photo-transistor circuits associated with light stops mounted on the mirror L2, and it is so arranged that no signal is passed to either integrator during change-over from one waveband to the other. The motion of the sample Q is synchronized with the drive of R2 and L2. If A.C. amplification is used in the apparatus it is necessary to chop the light beam, for example by means of a further rotary element prior to slit S1.
Patent GB-458157-A (GB)
Title: A collapsible portable book rest
IPC: A47B65/00
Filed: 1936-05-05
Abstract: 458,157. Book rests. ROBERTSON, W. B., Tallis House, Tallis Street, London. May 5, 1936, No. 12702. [Class 52 (i)] A book-rest consists of two ends 3 with toe parts 11 insertible in apertures 5, in a base 1, and a back 4 insertible in grooves 14 in the ends and a groove 15 in the base. The engaging parts may be reversed, e.g., the toe parts 11 may be on the base 1, and the joint 15 may be a dovetail joint.
Patent GB-220599-A (GB)
Title: Improvements in or relating to talking machines of the portable type
IPC: G11B25/04
Filed: 1924-05-23
Abstract: 220,599. Lindstrom Akt.-Ges., C., (Assignees of Holtz, K.). Aug. 17, 1923, [Convention date]. Cases with internal horns; tone-arm joints.-In a portable gramophone, the lid of the casing has one or more leaves or walls detachably or pivotally connected thereto and adapted to be adjusted at an angle to the lid, the space formed between the leaves and the lid serving as a sound-amplifying chamber, and also, when the apparatus is not in use, as a receptacle for records. The machine shown has a leaf 7 hinged at 22 to the lid 4, which leaf can be secured in the position shown in Fig. 2 by means of struts 8, 9 hinged respectively to the body and lid of the casing. The wedge-shaped amplifying chamber may be closed laterally by folding or removable leaves 10, and in this case openings for the outlet of the sound may be provided in the walls. The flanges 11, 12, 13 of the lid may be hinged or removable if desired. A socket 15 to which the tone-arm is detachably and universally jointed, is provided in the wall 7. Records may be placed on a stud 6 in the lid when the machine is not in use. The body of the casing is partitioned by walls 3, adjacent to the motor 2, forming compartments in which the tone-arm, sound-box &c. may be stored when detached. The Specification as open to inspection under Sect. 91 (3) (a) states also that the adjustable leaves may be so arranged that an approximately or completely closed sound-amplifying chamber is formed, openings for the outlet of the sound being provided in the walls. It is also stated that the side leaves 10 may be inserted in grooves in the parts 4, 7. This subject-matter does not appear in the Specification as accepted.