baber/WOPTO huggingface dataset:
Patent GB-1352412-A (GB)
Title: Electrographic apparatus incorporating automatic contrast control
IPC: G03G15/02
Filed: 1971-04-26
Abstract: 1352412 Automatic current control - electrophotographic processes EASTMAN KODAK CO 26 April 1971 [24 April 1970] 11361/71 Heading G3R [Also in Division G2] In an electro-graphic apparatus for document copying and having automatic contrast control, a uniform negative charge controlled by a grid 5 and exposure time is set up on a photo-conductive grid 6 (Fig. 1) by means of a corona source 4. The grid 6 is then exposed to a radiation pattern derived from the subject matter (e.g. a film transparency) to be reproduced, whereby the negative charge in the grid areas corresponding to bright regions of the pattern, is decreased, and subsequently the charge pattern on the grid is used to modulate ion current flow between the corona source 4 and a direct current source 3 (e.g. including a constant current diode, a vacuum photo-diode or a transistor, whereby the current may be maintained constant) through a receiving copy sheet 2. Contrast control is achieved in that when multiple copies are being made, any charge decay in grid 6 will result in a larger ion current flow to receiver sheet 2 which in turn will cause an increased volt drop across the current source 3. Thus grid 6 will go more negative and reduce the ion current flow passing to the sheet 2. Thereby the current is maintained substantially constant. In a further embodiment Fig. 3, the voltage drop across current source 3 is detected by an amplifier 9 and a network 10 converts the sensed voltage to a control current which is integrated with respect to time by a circuit 11. The output of the integrator is indicative of the charge produced on receiver sheet 2 since charging began. A comparator 12 compares this output with a desired contrast signal set up on potentiometer 13. When the total charge received by the sheet 2 reaches the desired value a relay coil 14 is de-energized and a switch 15 opens, the switch having been held closed to pass ion current through the sheet between the current source 3, conductive base-plate 1 and corona source 4. Thereby automatic contrast control is achieved when producing multiple copies, by change in the length of periods during which successive sheets receive ion current.
Patent GB-1452403-A (GB)
Title: Vehicle instrument panels
IPC: B60Q3/04
Filed: 1974-03-14
Abstract: 1452403 Vehicle instrument panels GENERAL MOTORS CORP 14 March 1974 [13 April 1973] 11446/74 Heading B7H A blackened mask 10 protects the driver's eyes from reflections in an instrument cover 13 and also houses a lamp 16 which illuminates the instrument 14 from in front but which cannot be seen by the driver either directly or in reflection. Arrangement of the lamp in front of the cover allows ready lamp replacement. The arrangement prevents light from the lamp 16 reaching the driver's eyes both by reflection in the cover 13 and by reflection in the windscreen 2. As illustrated, the cover 13 is curved; but it may be flat. In the latter case, the mask would need to be extended further forwards if limiting rays 19 and 20 are not to enter the area 17 normally occupied by the driver's eyes.
Patent GB-824800-A (GB)
Title: Improvements relating to chocks for supporting roofs in mines and like workings
Inventor: DUNCAN ANGUS WELLESLEY
IPC: E21D15/48
Filed: 1957-04-09
Abstract: 824,800. Mine roof supports. MINING ENGINEERING CO. Ltd. March 18, 1958 [April 9, 1957], No. 11489/57. Class 20(2) A chock for supporting mine roofs has a hollow base made of four identical steel plates 12 with Z ends the webs 13 of the ends being at 45 degrees to the planes of the plates and having central slots extending from one edge half the depth of the plates and of a width equal to the thickness of the plates, adjacent plates being inverted and welded together at the slots. The flanges 15 ofthe ends may be parallel or at right angles to the planes of the plates. Plates 20 are welded to the top and bottom of the chock and stiffening tubes 24 and a hauling eye 23 to the sides. The lower plate 20 has upturned flanges 22. Specification 775,345 is referred to.
Patent GB-473972-A (GB)
Title: An improved gear changing device for motor vehicles
IPC: F16H63/46
Filed: 1936-04-22
Abstract: 473,972. Controlling change-speed gearing. KREMER, M. DE. April 22, 1936, No. 11513. [Class 80 (ii)] Relates to selector shift mechanism for vehicle changespeed gearing in which shift rods 1, 2, 3, Fig. 1, are movable in both directions to gear positions from neutral by a double-armed striker lever 13, Fig. 2, which is moved by a selector control so that its upper arm 13a or its lower arm 13b may engage upper and lower jaws 9b, 10b, Fig. 3, of the same shift rod selectively so that a rocking :of the lever 13 in one and the same direction on release of the clutch pedal will throw the shift rod in one direction or the other according to the arm of the lever engaged. Each shift rod carries an upper jaw such as 9b and a lower jaw such as 10b, and, in the arrangement shown in Fig. 3, these jaws are staggered so that the lever 13 may be straight and be clear of one jaw when it engages the other. These upper and lower jaw pairs 9a, 10a, 9b, 10b, 9c, 10c have an end opening between them and these openings are in line so as to form collectively a passage P, Fig. 2, along which a connecting member 14 may pass, which member connects to the selector gear. This connecting member 14 may be an arm sliding on a guide 15, Fig. 1, under control from a push-pull cable 16. Thus, the lever 13 has six operative selective positions, as is clear from Fig. 3. The lever 13 is slidably splined on a rock-shaft 12 which is rocked always in the same direction during the return idle stroke of the clutch pedal prior to clutch engagement, such pedal having a lost-motion connection with a lever 17 fast on the shaft 12. In a modified arrangement, the upper and lower jaws such as 9b, 10b of each selector bar are in the same plane, as shown in Fig. 8, and the arms 13a, 13b of the lever 13 are staggered. The jaws 9b, 10b, &c. are carried about the middle of each shift rod 2 &c., as shown in Fig. 6, and the connecting member 14 which moves in the passage P is adapted to be turned about a pivot selector arbor 28 in the top of the gear case.
Patent GB-109071-A (GB)
Title: Improvements in or relating to Boring Tools.
Inventor: LEY EDITH
IPC: B23B51/10
Filed: 1917-01-23
Abstract: 109,071. Ley, E. Jan. 23, 1917. Drills and cutters.-Shell bits or other drills are fitted with a detachable cutter for countersinking. The countersink B is formed with a split cone, threaded at F to receive a correspondingly coned clamping- nut G
Patent GB-438848-A (GB)
Title: Production of new decylene compounds
IPC: C07C45/72
Filed: 1935-04-16
Abstract: Ethyl butyl acetaldehyde is condensed with acetaldehyde to give a 1.3 decylene aldol which is hydrogenated to yield a decylene glycol. This is esterified with an excess of acid or its anhydride, e.g. acetic, formic, propionic, stearic, salicylic or phthalic acid, in the presence of a catalyst such as sulphuric, toluene sulphonic, or phosphoric acid.  Ethyl butyl acetaldehyde and acetaldehyde are condensed at - 5 to + 5 DEG  C. in the presence of an alkali such as caustic soda.  The reaction mixture is neutralized, e.g. with sulphuric acid, filtered to remove inorganic salts, and distilled at from 20--80 DEG  C. and 100--5 mm. The residue is mixed, for example, with 5 per cent of active nickel and hydrogenated at from 20--60 DEG C. under a pressure of 700--900 lbs./sq. in.  The catalyst is filtered off and the filtrate fractionally distilled in vacuo to obtain the decylene glycol fraction.  This is mixed with glacial acetic and sulphuric acids in a still provided with a rectifying column, condenser, and separator.  A two-phase condensate separates, the upper layer being returned and the water layer removed.  When evolution of water ceases, the liquid is cooled, washed with sodium carbonate, and distilled in vacuo to obtain the glycol diacetate. The decylene glycol esters are used as solvents and plasticizers, for example for vinyl resins, in the lacquer, varnish and resinmoulding industries.ALSO:Decylene glycol esters such as the diacetate are used as solvents and plasticizers in lacquers and other coating-compositions.ALSO:Decylene glycol esters, for example the diacetate, are used as solvents and plasticizers in moulding resins, e.g. vinyl resins.
Patent GB-1371593-A (GB)
Title: Diaphragm pump
IPC: F04B9/04
Filed: 1973-03-13
Abstract: 1371593 Diaphragm pumps A PIERBURG AUTOGERATE BAU KG 13 March 1973 [6 July 1972] 11940/73 Heading F1A A diaphragm pump comprises two or more diaphragms 13, 14 reciprocated 90 degrees out of phase by a crank-shaft 37 acting via an oscillator member 31 guided at 32 and attached to the diaphragms at 20 and 27, such that the attachment points 20, 27 move along an elongated loop during each crank-shaft revolution. The diaphragms are connected to members 19, 26 pivotably connected by pins 20, 27 to member 31 and slidably guided by pins 23, 30. Guide 32 either comprises a fixed pin 34, as shown, or a ball, roller or part-spherical member rotatably mounted in the pump housing and having a radial bore slidably receiving a pin attached to member 31, Fig.2 (not shown). The pump is supported by vibration-damping devices 39, 40.
Patent GB-589601-A (GB)
Title: Delivering portland cement from a hopper on to a belt
IPC: B65G65/00
Filed: 1944-06-23
Abstract: 589,601. Delivering cement from hoppers. STANCLIFFE, C. W., and WINGET, Ltd. June 23, 1944, No. 12000. [Class 78(i)] To prevent flurry when cement is fed from a hopper 7 by a belt 1, the delivery end of the hopper is formed by a duct 8 closed at the top and sides and extending over the belt, the feed being controlled by an adjustable gate valve 9 located near the end of the duct.
Patent GB-1103932-A (GB)
Title: Drying plant
IPC: A01D43/00
Filed: 1964-03-21
Abstract: 1,103,932. Drying crops. J. J. COLTON. 21 June, 1965 [21 March, 1964], No. 12033/64. Heading F4G. A portable crop drying apparatus has, mounted on the chassis of a road vehicle, a rectangular housing 22 horizontally divided by an upper removable mesh partition 23 and a lower mesh partition into an upper treatment chamber 25 and a lower air inlet compartment 26 supplied through a funnel with heated air from an oil burner 35 through a duct 34 and an impeller fan 32. The duct 34 has adjustable air inlets 36 to regulate induced flow of fresh air thereinto by the fan which is driven by an I.C. engine, and the oil burner is controlled by thermostats in the air funnel.
Patent GB-633647-A (GB)
Title: Hand mirror
IPC: A45D42/16
Filed: 1947-05-05
Abstract: 633,647. Mirror stands. SANDFORD, S. R. May 5, 1947, No. 12043. Convention date, April 30, 1946. [Class 52 (iii)] A mirror stand comprises a U-shaped member 14 which embraces the lower edge of the mirror and to the base of which is pivoted an arm 13 adapted in its operative position, together with the U-shaped, to stand on a supporting surface. The U-shaped member 14 is provided with a catch 16 to engage the arm 13 in its inoperative position and this catch 16 and the pivot of the arm serve as feet for the U-shaped member 14.
Patent GB-697850-A (GB)
Title: Improvements relating to building blocks
IPC: E04B2/30
Filed: 1950-05-16
Abstract: 697,850. Building-blocks. DRAYCOTT, J. B., COLLIS, R. F.. and NEEBHAM, W. S. G. June 15, 1951 [May 16, 1950], No. 12148/50. Class 87(i) . In a building-block comprising outer and inner portions 1, 2 connected by metal ties 4. embedded at their ends in vertical ribs 1a. 2a. on, the. portions 1, 2, the outer face 8 of the block is inclined outwardly and formed with a lip 9 at its lower end to overlap a block below. Some or all of the' faces of the block may be slightly inclined as at 16 to facilitate moulding. A wall junction block, Fig. 2, is of T-shape, the stem 13 of which has a through aperture 14.
Patent GB-494726-A (GB)
Title: Acoustic diaphragm
IPC: H04R7/12
Filed: 1937-04-28
Abstract: 494,726. Diaphragms. BRITISH THOMSON-HOUSTON CO., Ltd., MOIR, J., and PATERSON, D. R. April 28, 1937, No. 12149. [Class 40 (iv)] An acoustic diaphragm comprises a central dish-shaped or frusto-conical portion 2 merging at its outer periphery into the inner edge of an annular surround 1, the central part of the dish-shaped portion being domed in the reverse direction to the virtual apex of the portion 2, and the annular surround being provided with concentric corrugations 4 and having plane portions left outside the outermost corrugation and between the innermost corrugation and the junction of the annular surround with the central portion. When the diaphragm forms part of a moving-coil loudspeaker, the coil former is attached at the junction of the annular surround with the central portion 2. The annular surround 1 is preferably integral with the portion 2.
Patent GB-622222-A (GB)
Title: Improvements in metallic piles
IPC: E02D5/28
Filed: 1946-04-23
Abstract: 622,222. Structural steel sections. ACIERIES REUNIES DE BURBACHEICH-DUDELANGE SOC. ANON. April 23, 1946, No. 12272. Convention date, July 19, 1944. [Class 20(ii)] [Also in Group XXI] A metallic pile element of trough section, adapted to be joined to a like element to form a tubular pile, has thickened longitudinal edges a, f to aid welding, and is of symmetrical half-octagonal cross section with a short thick median portion CD and two longer outwardly diverging sides BC, DE merging at their ends into two half-side portions AB, EF which are substantially perpendicular to the median portion and adapted to equilibrate that portion so that the octagonal pile has equal moments of inertia about all axes of the pile section. The sides BC, DE are perpendicular to each other, and the depth h of the element is half the width b. The portions a, f are bevelled at a<SP>1</SP>, f so that when two elements are assembled for joining, as shown in Fig. 3, a V-shaped chan nel V is formed to receive the weld material.
Patent GB-343815-A (GB)
Title: Elevating and conveyor trucks
IPC: B62B3/06
Filed: 1930-04-22
Abstract: 343,815. Hand - trucks. SAYERS, W. P., 34, Bray's Lane, Stoke, Coventry. April 22, 1930, No. 12377. [Class 108 (i).] In hand-trucks the point of engagement of the elevating platform with an operating crank or cranks is displaced during the elevating movement from below to above the main or rotational axis of the crank. As shown the platform 10 is provided with brackets 11 which are pivoted to the operating cranks 12. In the lowered position of the platform the cranks are inclined downwardly and are rotated until they incline upwardly during the elevating movement. The cranks are mounted on shafts 4, 13 carrying also cranks 14, 15 linked together by bars 16. The crank 15 is a bell crank the other arm 17 of which is linked by divided links 18 with levers 19, 21 pivoted at 20 to the cross head. The levers 19, 21 are depressed for elevating the platform by the handle 8. A catch 24 engaging the crank 15, 17 is provided to lock the platform in its elevated position.
Patent GB-808038-A (GB)
Title: Improvements in or relating to wave-guide systems
IPC: H01P1/30
Filed: 1957-04-16
Abstract: 808,038. Waveguides. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 16, 1957 [April 19, 1956], No. 12426/57. Class 40 (8). A waveguide system is ventilated by means of dried or heated air or an inert gas such as nitrogen which is passed into the system through one branch of a directional coupler. The coupler shown effects a complete transfer of wave energy from branch A (connected, e.g., to a transmitter) to branch B (connected, e.g., to an aerial). Branch C is connected to the gas source and is provided with a septum S to prevent propagation of energy along the branch. Branch D is provided with a gas-tight seal Z.
Patent GB-292319-A (GB)
Title: Improvements in or relating to the goods shaft or magazine in coin-freed vending machines
IPC: G07F9/10
Filed: 1927-05-09
Abstract: 292,319. Wistoft, S. May 9, 1927. Delivery of articles stored in piles; storage.- The storage magazine of a coin-freed gocds vending machine is formed of two branches 6, 7 in the shape of an inverted U, the curved portion being of slightly greater section than the rest. The branch 6 terminates above the delivery drawer or other opening member of the machine, and the branch 7 extends to the bottom of the machine casing. The articles are raised in the branch 7 by an elevator carried by cords passing over pulleys 12 and provided with counter balance weights, an article passing from the branch 7 to the branch 6 each time the delivery member 3 is actuated. In the form shown in Fig. 5, the top packet in the branch 7 passes into a receiver 17 pivoted at 18 and connected by links 20, 21 to the opening member of the machine. When the opening member is actuated to deliver a packet, the receiver 17 is swung about its pivot and transfers the top packet in the branch 7 to the branch 6, a rearward flange 19 preventing the remaining packets from rising in the branch 7 until the receiver is returned to its initial position. The top 16 of the branch is widened to allow the packet to slide out from the receiver 17. In a modification, Fig. 7, the top of the branch 7 is closed by a stop 22 and the top packet is transferred to the branch 6 by an ejector 24 on a bell-crank lever 25, 26 connected by a link 21 to the opening member of the machine. The pile of packets may be raised in the branch 7 by springs.
Patent GB-755138-A (GB)
Title: Improvements in and relating to locks
Inventor: RUSTON RUDOLF STEEDMAN
IPC: E05B55/00
Filed: 1954-04-29
Abstract: 755,138. Locks. CHUBB & SON'S LOCK & SAFE CO., Ltd. Jan. 17, 1955 [April 29, 1954], No. 12464/54. Class 44. A lock comprises bolt means withdrawable by rotation of a spindle, e.g. under control of a key-actuable lock movement and provided with snap-acting means, operable by a slight angular rotation of the spindle in a sense contrary to that in which the spindle withdraws the bolt means, adapted to effect dead-locking of the bolt-means. As shown, a latch bolt 5 is withdrawn, on one side of the lock, by a handle 7 having a pin-and-slot connection 8, 10 with the bolt tail 2, and on the other side of the lock by a spindle or the like of a key-operated lock mechanism, the spindle engaging a follower 12 having an arm 13 which engages the bolt tail 2. A lever 15 pivoted to the lock casing at 16 and loaded by a spring 19 is moved to the position shown, to dead-lock the bolt, by a cam portion 23 of follower 12, when the latter is moved by the lock mechanism in a direction opposite to that for withdrawing the bolt 5. The lever 15 is released by a member 24 pivoted to the lock case at 25 and connected to the lever 15 through a pin 20, as the follower 12 is moved in the direction to withdraw the bolt. The bolt may also be dead-locked from the other side of the lock, Fig. 3 (not shown), by a cylinder lock located in the handle 7 and operative upon a follower and lever system similar to that described above, the levers at both sides being joined together at the bolt end thereof and loaded by a single spring 19. An arcuate slot 30 on the bolt tail 2 aligns with a slot 9 in the casing to permit the bolt to be held temporarily in retracted position when pushed inwardly of the casing.
Patent GB-377999-A (GB)
Title: Improvements in and relating to systems of electrical regulation
IPC: F16L33/01
Filed: 1931-04-28
Abstract: 377,999. Automatic regulation ; transformers. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thompson, L. W. ; 53, Baker Avenue, Schenectady, New York, U.S.A.) April 28, 1931, No. 12516. Convention date, April 29, 1930. [Classes 38 (ii) and 38 (iv).] The voltage applied to a variable load 4 is automatically regulated by means of a saturable reactor 6 in parallel with the load which by means of a saturating winding 9 energized in accordance with an electrical condition of the load circuit such as the load current draws a varying lagging current through a condenser 5 in series relation with the load circuit. A winding, Fig. 2 (not shown), in series with the load circuit may be inductively coupled with the reactance to produce a bucking voltage with respect to the load circuit voltage to compensate for the no-load voltage rise inherent in the regulation. A reactor 10 of low impedance to the fundamental frequency may be connected in series with the saturable reactor to present a high impedance to harmonics resulting from the saturation of the reactor.
Patent GB-708246-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers modulators and repeaters
Inventor: COOPER VICTOR JAMES
IPC: H04N5/16
Filed: 1950-05-18
Abstract: 708,246. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 8, 1950 [May 18, 1950], No. 12516/50. Class 40 (3). [Also in Group XL(c)] An arrangement for stabilising the D.C. component in the output from an amplifier, comprising a stabilising circuit connected across the H.T. supply for the amplifier, consists in two valves V1, 2 connected in series through an impedance R, the anode of the more negative valve V2 being coupled to the control grid of the other valve VI. A D.C. reference source GS is connected to the control grid of the valve V2 and the load of the amplifier to be stabilised (not shown) is connected between the output terminal of that amplifier and the cathode CV1 of the valve VI. The valve V1 may also be provided with an anode impedance and its anode crosscoupled to the grid of the valve V2, Fig. 6 (not shown). The arrangement may be utilised for stabilising the black level in a television amplifier or modulator, the reference source GS then comprising an amplifier fed with a voltage dependent upon the black level. Further stabilisation against change in HT voltage may be obtained by means of an additional valve V3 connected across the HT supply and with an amplifier K interconnecting its grid and anode circuits. A number of amplifiers of known types with which the arrangement may be used are described in the Specification, Figs. 1-4 (not shown).
Patent GB-1395032-A (GB)
Title: Electrical circuit arrangements including radiation energised circuit elements
IPC: H01L27/144
Filed: 1972-03-17
Abstract: 1395032 Detector circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 March 1972 [20 March 1971 18 June 1971] 12585/72 Heading G1A [Also in Divisions H1, H3 and H5] The output current path of a transistor is supplied by an irradiated semi-conductor junction which may be the emitter-base junction of a succeeding transistor (see Division H3). In one embodiment an oscillator circuit is formed from such transistors and the variation in frequency with the irradiation level is used to sense the level. Reference is made to the use of daylight, infrared and ultraviolet irradiation lamps and also to the use of incandescent discharge lamps and light-emitting diodes.
Patent GB-714763-A (GB)
Title: Sausages, sausage meat or fillings of high fat content
IPC: A23L13/40
Filed: 1951-05-29
Abstract: In making sausages, sausage meat and fillings containing over 25 and at times over 45 per cent by weight of fat, a small amount, e.g. 0.3 to 0.5 per cent, of a water-soluble alkali metal salt of an acid of phosphorus such as a salt or mixture of salts of ortho-, meta-, pyro- and poly-phosphoric acid, is incorporated.