baber/WOPTO huggingface dataset:
Patent GB-163405-A (GB)
Title: Improvements in baby carriages and the like
IPC: B62B9/18
Filed: 1920-01-21
Abstract: 163,405. Young, E. L. Jan. 21, 1920. Right to Patent relinquished. Springs, arrangement of; frame construction.- A perambulator body is supported from the undercarriage by spring shackles A dependent from flat spiral springs N attached to the ends of the longitudinal members B, which are formed of steel tubing and are secured to axles C by four-way lugs 0. The upwardly extending ends of the members B are cranked outwards and end in horizontal portions extending beside the body, where they are connected to the ends of the springs N. The shackles A are connected to the centres of the springs N and comprise a casing E containing a coil spring J working between the bottom of the casing and a washer H under a nut G carried by a spindle F passing through the bottom of the casing. The spindles F support the body through cranked rods K bolted at their centres beneath the seats and surmounted at their ends by lugs M on the spindles F. The handle may be attached either to the body or the undercarriage.
Patent GB-598244-A (GB)
Title: Improvements in means for controlling automatically the gain of an amplifier
IPC: G01V3/10
Filed: 1945-01-24
Abstract: 598,244. Automatic volume control. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION, and ROSENBLUM, B. Jan. 24, 1945, No. 1960. [Class 40 (v)] [Also in Group XXXVI] The first component of a complex electrical wave is applied to the input of an amplifier and measured by an instrument in the output circuit, variations of this component due to a second component being eliminated from the measurement by applying the second component to a compensator of which the D.C. output is applied to the compensator input for controlling the gain and a part of the D.C. output is applied to the amplifier for controlling its amplification. A search unit A consisting of four coils is connected to a balancing circuit P1, C1, P2 and to two equal condensers C2, C3 having their junction earthed so that when the unit is located in a uniform magnetic field the potential difference between points E, F is zero. When the coils approach a buried conductor or magnetic body, the field distortion gives rise to a voltage across points E, F, this voltage is amplified in an amplifier comprising Variable-mu valves VI, V2, V3 and an indication is given by a telephone G. The voltage between points B, D which is proportional to the mean field strength, is applied to a compensator comprising a variable-mu valve V4 having the same characteristics as the valves V2, V3. A voltage developed across a rectifier J is applied to the grid of the valve V4 through a smoothing circuit R1, C4 for controlling its gain and a part of this voltage is tapped off between resistances R2, R3 and applied through a smoothing circuit K to the control grids of valves V2, V3. The ratio of the voltage fed back to the grid of valve V4 to the voltage applied to the grids of the valves V2, V3 is arranged so that the amplifier output is made independent of the mean field strength. When a switch S is closed, the points E, F are shortcircuited by the resistance R5 and there is applied to the input of the amplifier a voltage proportional to that between points B, D. Thus, the variations, if any, can be observed at G corresponding to a variation in the absolute values of amplifier and compensator input, whilst their ratio remains constant. The invention is applicable to the automatic control of the audio-frequency output of a radio receiver to render it independent of the strength of the radio-frequency input. Specification 598,243, [Group XXXVI], is referred to in the Provisional Specification.
Patent GB-1409791-A (GB)
Title: Plant growth package
IPC: A01G9/10
Filed: 1972-01-15
Abstract: 1409791 Plant growth medium FISONS Ltd 5 Jan 1973 [15 Jan 1972] 2035/72 Heading A1E A medium for growing plants comprises a dry compressed peat block enclosed in a loose fitting enclosure which will serve as a receptacle for the peat block when expanded by the addition of water. A fertilising mixture may be mixed with the peat and seeds may be provided in the dry block 'before expansion. The enclosure may have identifying marks included on its surface to indicate where it should be cut for various purposes.
Patent GB-620616-A (GB)
Title: Improvements in or relating to mounting electrical contact springs
IPC: H01H11/06
Filed: 1947-01-23
Abstract: 620,616. Switch contacts. STANDARD TELEPHONES & CABLES, Ltd., and TOWNER, S. H. Jan. 23, 1947, No. 2129. [Class 38(v)] Contacts springs 3 having locating shoulders 4 are fixed in through slots 2 in an insulating support 1 by injecting cement into the slots around the roots 6 of the contact springs. The roots may have slots 7 which protrude beyond the support to receive a D-shaped rod 11, Fig. 5, to lock the springs in position before injecting the cement. In a modification, Figs. 3, 4 (not shown, T-shaped metal pieces, apertured to coincide with the slots in the roots, are slid into the slots in the support from the opposite end and may be welded to the contact springs. Specifications 608,696 and 612,754 are referred to.
Patent GB-1167373-A (GB)
Title: Optical Objective of Variable Focal Length
Inventor: COOK GORDON HENRY
IPC: G02B15/177
Filed: 1967-01-16
Abstract: 1,167,373. Variable focal length objectives. RANK ORGANISATION Ltd. Feb.6, 1968 [Jan.16, 1967], No.2231/67. Heading G2J. A zoom lens of zoom ratio R and fnumber N has a normally fixed negative front member 1, Fig.2, which may be movable for focusing, a positive second member 2 of focal length f2 which moves forwardly during zooming towards the maximum focal length Fm, a negative third member 3 of focal length f3 which moves rearwardly, a positive fourth member 4 of focal length f4 which moves forwardly and a stationary rear member 5 wherein:- g2, g3, g4 , being the ratios between the maximum and minimum magnification of the second, third and fourth members respectively and X being the mean value of the sum of the distances from the rear nodal point of member 2 to the front nodal point of member 3 and similarly from member 3 to member 4. Optical data are given for two examples in which members 2, 4, move through the same distances so that they can be coupled together, and the front surface R29 of the rear member 5 is aspheric.
Patent GB-854498-A (GB)
Title: Improvements in or relating to the gauging of cam profiles
Inventor: TAIT JOHN NOEL HUTTON
IPC: G01B5/20
Filed: 1956-01-24
Abstract: 854,498. Gauging departure from standard form. BIRMINGHAM SMALL ARMS CO. Ltd. April 3, 1957 [Jan. 24, 1956], No. 2250/56. Class 106 (2). Apparatus for gauging the profiles of cams 60 formed integrally with a cam-shaft 1 by coupling the shaft 1 for rotation with a standard cam-shaft 2, the shafts rotating in unison, comprises gauging members 28, 29, adapted to contact and radially follow the respective cams 60, 61 to be compared, supported by an arm 20 bridging both shafts 1, 2 and engaging at one end with a plane surface 22 extending along the apparatus, the other end of the arm 20 being mounted to slide on and swing about a shaft 19 disposed parallel to the master camshaft 2, and including means 33 for detecting any departure between the profiles of the cams 60, 61 being compared. As shown, the shaft 1 is mounted in half-bearings 4, 5, 6, and the standard cam-shaft 2 is similarly mounted. The cams 60, 61 being compared are engaged by feelers 28, 29, mounted in guides 24, 25 on the arm 20, and the difference between their movements is indicated on a dial gauge 33. The shafts 1, 2 are geared together by means of an idler pinion, so that they are rotated at the same speed and in the same direction by means of a hand wheel 45, means 50, 52 being described to adjust the angular position of the shafts and indicate angular discrepancies between the cams. The half-bearings 9, 5, 6 are mounted on blocks 10, 11, 12, adjustable along slides in the base 3 to accommodate different sizes of camshaft. In operation, the feelers 28, 29 are placed on steeply rising portions of the cam-flanks, the dial gauge 33 is adjusted to zero by means of an adjustable anvil 34, and the angular position of the shaft 1 noted by means of a scale on the hand wheel 45 co-operating with an index mark on a fixed arm 59. The hand wheel is now turned until the feelers 28, 29 contact the cam peaks, and it is then turned further through the same angle, and the dial gauge 33 read again. The adjustment 50, 52 is then operated to reduce the reading of the gauge by half, the hand wheel turned back to its original position and the dial gauge re-set to zero. The cams 60, 61 are then in the same angular position. The above sequence is then repeated to check this setting. The profile error can then be read from the gauge 33 during one complete rotation of the hand wheel 45.
Patent GB-764243-A (GB)
Title: Apparatus for controlling the direction of rotation of the armature of a dynamo electric machine
Inventor: STEELE FLOYD G
IPC: G05B19/40
Filed: 1955-01-26
Abstract: 764,243. Electric selective signalling systems. NATIONAL CASH REGISTER CO. Jan. 26, 1955, No. 2286/55. Class 40 (1). In a system for controlling the rotation of a shaft 7, Fig. 1, in accordance with data represented by pulses from an electronic computer 1, the computer generates pulse information on a channel P and clock pulses on a channel C, a pulse on channel P, if any, occurring in coincidence with a clock pulse and representing an incremental counter-clockwise rotation of the shaft 7, and an absence of a pulse on channel P when a clock pulse occurs representing an incremental clockwise rotation of the shaft, Both sets of pulses are fed into a logical switch control circuit 2 whose operation is dependent on the pulse input on channels P and C and the previous states of switches in a box 4. At the occurrence of each clock pulse a change in potential is made on the output from logical circuit 2 which is amplified at 3 and adjusts the switch positions in the box 4 to reverse in the correct manner the energization of the poles of the motor 5 by a D.C. supply 6 to effect either a clockwise or anticlockwise incremental rotation of the shaft 7. The motor 5, Fig. 2, has a permanent magnet armature 8, a pair of horizontal field poles A which are series connected to produce polarities as shown, and a pair of similarly connected vertical field poles B. Since adjacent poles of the same polarity may be considered to be a single divided pole, fundamentally the motor is two-pole, and each incremental rotation corresponds to a 90 degrees rotation of the armature 8. The energization of the coils A from a D.C. source 6 is controlled by a reversing switch S1 which is operated by an electromagnet 19 each time a valve 20 conducts, and the energization of coils B is similarly controlled by a reversing switch S2 operated by an electromagnet 30 in the anode circuit of a valve 32. The outputs A1 and B1 of flip-flops Al and B1 (not shown) are connected through voltage dividers to the grids of valves 20 and 32 respectively, to control the switches S1, S2. The Specification gives a table showing the eight possible combinations of C, P, A1, and B1, the change required in flipflops A1 and B1 for each 90 degrees movement of the shaft, and the outputs required from a logical network to produce this change. From the table logical equations are derived which define the conditions for triggering the flipflops, and a logical network, Fig. 5 (not shown), is produced for solving the equations.
Patent GB-491192-A (GB)
Title: Improvements in or relating to scrapers for excavating
IPC: E02F3/64
Filed: 1938-01-25
Abstract: 491,192. Excavating. RUSTONBUCYRUS, Ltd. Jan. 25, 1938, No. 2398. Convention date, March 15, 1937. [Class 68 (i)] In a scraper with lifting means applied only at the back of the digging bowl, hanging means separate from the lifting means for supporting the front of the bowl from the machine frame, and an interconnection between the lifting and hanging means such that lifting the back of the bowl from digging position will cause the hanging means to rise to a lesser extent so as finally to dispose the bottom of the bowl at a steep angle for dumping, the interconnection includes two links, one pivoted to the rear of each side of the bowl and the links having the lifting means applied thereto. The bowl 14 is pivoted at 16 to toggle arms 36 pivoted to the frame 11 at 37. Bent links 18 are pivoted at 16, one on each side of the bowl, and are each pivoted to a triangular member 34 pivoted at 35 to the frame and connected by a link 19 to the bowl. The front apron 38 is carried by an arm 39 pivoted to the frame 11 at 35, and a rope 40 attached at 41 to the apron, passes at each side over a pulley 42 to an anchorage on a cam 43 adjustable on the link 19. Stops 44, 45 limit downward movement of the bowl and apron. A single rope 20 passes from an anchorage over elevated pulleys 32 and pulleys 31 on bent link 18 at one side of the frame 11, then across the frame and over similar pulleys and forwardly to a control winch. On hauling in rope 20, the bowl rises from digging position, Fig. 2, to carrying position, the front of the bowl rising faster than the rear and the apron 38 moves to close the bowl. On further hauling in, the front of the bowl falls for dumping, the apron moving away from the bowl.
Patent GB-807005-A (GB)
Title: Equipment for collecting workpieces, e.g. rolled bars
IPC: B21B39/00
Filed: 1957-01-23
Abstract: 807,005. Rolling. BOHLER & CO. A.G., GEB. Jan. 23, 1957 [Jan. 23, 1956], No. 2407/57. Class 83 (4). A table b, Figs. 2, 3, for collecting moving cut bars a as they emerge from a roller table c of a rolling mill can be inclined to one side so that the bars glide in a curved path and are piled up in troughs e on either side after losing substantially all of the axial velocity. The table b is mounted on a series of semi-circular plates f which are supported by roller bearings g. In a modification the table b may be used in combination with a shears l, Fig. 4, for cutting stationary work. The bar to be cut is set to length against a pivoted end stop i and is held in position in the middle of the table b by a pivoted side guide h. The table is tilted towards a trough k so that on lifting the guide h the bar rolls into the trough.
Patent GB-576744-A (GB)
Title: Preparation of chlorinated rubber and other chlorinated rubber-like materials and chlorinated rubber hydrochloride
IPC: C08C19/14
Filed: 1944-02-09
Abstract: Chlorinated rubber, chlorinated rubber-like materials and chlorinated rubber hydrochloride of improved colour and clarity and reduced tendency to discolour under the action of light and to gel in solution are prepared by drying the water-wet precipitated chlorinated material in contact with surfaces consisting essentially of nickel.  Rubber, balata, gutta-percha, rubber hydrochloride, polymerized butadiene or chlorbutadiene, or a butylene polymer or a copolymer of butylene with butadiene is dissolved or dispersed in a medium which is preferably inert to chlorine such as carbon tetrachloride, chloroform, tetrachlorethane, benzene, toluene, chlorinated toluene or chlorinated benzene and treated with chlorine with or without the addition of air or oxygen.  After removing excess chlorine and hydrochloric acid, the chlorinated material is precipitated with hot water, hexane, heptane or ethyl alcohol and then washed.  The material is then dried, preferably under reduced pressure with a current of air passing through the mass, in a closed, nickel-lined vessel fitted with nickel stirrers, the jacketed walls of the vessel being kept at 50-130 DEG  C.
Patent GB-1059506-A (GB)
Title: Improvements in or relating to phosphorus-containing polyether polyols
Inventor: JONES JANET ELIZABETH
IPC: C07F9/40
Filed: 1965-01-20
Abstract: Phosphorus-containing polyether polyols are prepared by reacting a monoepoxide which contains a vic-epoxy-alkyl radical directly attached to a phosphorus atom with a compound containing three or more hydroxy groups (nucleating agent).  A mixture of the above epoxide with a monoepoxide which does not contain phosphorus may be reacted with the nucleating agent.  Catalysts may be used in the reaction, e.g. tertiary amines, Lewis acids, or alkali metal hydroxides.  The polyols are useful in the preparation of flame-retardant polyurethane foams.  Examples of nucleating agents are glycerol, pentaerythritol, sorbitol, 1,5,9-trihydroxy cyclododecane, glucose, fructose, or sucrose.  Typical monoepoxides containing phosphorus are ethyl 2,3-epoxypropyl ethylphosphinate, diphenyl - 9,10 - epoxyoctadecyl-phosphine oxide, dicyclohexyl-2,3-epoxypropyl phosphonate, and diethyl - 2,3 - epoxypropyl -phosphonate.  Monoepoxides that do not contain phosphorus are oxiranes, e.g. ethylene oxide, propylene oxide, epichloro-and epibromohydrin, 1-butene oxide, cyclohexylethylene oxide, styrene oxide, and benzylethylene oxide, and oxetans, e.g. trimethylene oxide and 3,3-di (chloromethyl) oxetan.
Patent GB-525192-A (GB)
Title: Improvements in or relating to electrically heated tubular melting furnaces
IPC: F27B17/00
Filed: 1939-02-18
Abstract: 525,192. Electric resistance furnaces. HENLEY EXTRUSION MACHINE CO., Ltd., DUNSHEATH, P., and GRIFFITHS, F. T. Feb. 18, 1939, No. 2590. [Class 39 (iii)] A lead-melting furnace comprises an inclined tube thickened at its central part to accommodate electric heaters in recesses 13 ; and a spring buffer 25 retains the ingot in position during melting. The central part may be of increased width to provide a lateral chamber 11 ; and thermostatic elements may be located in two of the recesses.
Patent GB-162387-A (GB)
Title: Improved means for clamping brackets or the like upon spindles applicable for securing such articles as horns, wind screens or lamp brackets
IPC: F16B7/04
Filed: 1920-01-28
Abstract: 162,387. Voisey, R. E. Jan. 28, 1920. Pivoting-adjustments for a motor-car horn, wind-screen, or lamp bracket mounted on a supporting spindle 2 comprise washer members 4, 7, 9, 11 which are assembled on the squared end 3, the alternate washer members being connected respectively to the spindle and movable horn or like member, and frictionally clamped together by an end nut. The washers 4, 9 are loosely mounted on the member 3 and have axially disposed peripheral projections 5 whereby these washers are connected to each other and to the adjustable member 12 by engagement of the projections with recesses 10, 13. The washers 7, 11 have slots shaped to engage with the squared end 3 of the supporting spindle. When the parts are assembled as shown in Fig. 3, the milled nut 19 provides for an adjustable frictional engagement between the two sets of washers respectively secured to the spindle and the member 12. One or more pairs of washers 4, 7 may be used as desired. In the arrangement shown in Fig. 3, the device is shown applied to a pair of clip members. In this construction, the end washer 15 is fixed on the face of the member 12 and is provided with peripheral recesses for engagement with a projection on an intermediate loose washer.
Patent GB-551245-A (GB)
Title: An improved control for gyroscopic apparatus
IPC: G01C19/44
Filed: 1941-02-27
Abstract: 551,245. Gyroscopic apparatus. GOGGIN, A. H. Feb. 27, 1941, No. 2652. [Class 97 (iii)] In a gyroscopic apparatus such as an artificial horizon for aircraft wherein the rotor is driven by air suction, means are provided for reversing the direction of the airflow and thereby causing the application of a brake to the rotor. When making an excessive roll, loop or other turn, the rotor may be brought quickly to rest and afterwards re-started thus reducing the time of recovery. As shown, an annular diaphragm 3 carrying two leather pads 2, 21 is located in the air stream adjacent the rotor 11. By manual operation of a cock, the air flow may be reversed thereby sucking the diaphragm and brake pads 2, 21 against the rotor and stopping the same. The cock is spring biased to. turn it to normal position when released.
Patent GB-713796-A (GB)
Title: Improvements in automatic wattage regulators for electrical devices
Inventor: BIRD LESTER FLETCHER
IPC: G05F3/04
Filed: 1952-01-31
Abstract: 713,796. Automatic regulation. HANOVIA CHEMICAL & MANUFACTURING CO. Jan. 31, 1952, No. 2662/52. Class 38(4) In Fig. 4 to maintain substantially constant, despite variations in voltage of an A.C. supply 4, the current through and hence the voltage across a load represented by an inductor 8 and a resistor 9 in series, a capacitor 5 in parallel with a self saturable inductor 6 is connected in series with the supply. The characteristics of inductor 6 and the total resistance 7 of the branch in which it is connected are so chosen that the desired condition is maintained over a wide range of supply voltage variation. Discharge lamp, transformer, and A.C. motor loads are specifically referred to.
Patent GB-617080-A (GB)
Title: Improvements in fastness to light of dyed textile materials
IPC: D06P1/66
Filed: 1946-01-28
Abstract: Wool, silk, cellulosic acetate and mordanted cellulose fibres which have been dyed with basic dyestuffs are given an after treatment with a solution of phosphotungstic, phosphomolybdic, a phosphomolybdotungstic or molybdic acid, or a soluble molybdate, at a pH not greater than 5.0.  By basic dyestuffs is meant those dyestuffs commonly known as basic dyes, and the water-insoluble anthraquinone dyes containing one or more groups of basic reaction are excluded. Cellulosic fibres which have been dyed with substantive colours and then given an after treatment with a condensation product of aldehydes with compounds containing basic nitrogen groupings and capable of forming such condensation products, e.g. urea, melamine, guanidine or their derivatives, or given an after treatment with quaternary ammonium compounds, are then treated with a solution of phosphomolybdic acid, phosphomolybdotungstic acid, molybdic acid or a soluble molybdate at a pH not greater than 5.0.  Cellulosic fibres which have been modified with condensation products of aldehydes and compounds containing basic nitrogen groupings and capable of forming such condensation products and then dyed with acid or substantive cotton dyestuffs are given a similar after treatment.  The soluble molybdate may be an alkali metal or ammonium molybdate.  The cellulosic fibres may be finally given a soaping and/or rinse in water before drying.  In examples: (1) silk fabric dyed with New Methylene Blue NSS is treated with phosphomolybdic acid; (2) cotton fabric mordanted with tannic acid and dyed with Malachite Green is then treated with phosphotungstic or phosphomolybdic acid; (3) cotton fabric dyed with Chlorazol Brown LFS is treated with the condensation product obtained from p : p1-diaminodiphenylmethane and formaldehyde as described in Specification 590,536 and then with ammonium molybdate; (4) viscose staple fibre dyed with Chlorazol Green PLS is treated with "Fibrofix" (Registered Trade Mark) and then phosphomolybdic acid; (5) cotton fabric dyed with the azo dye Direct Fast Black B is treated with the condensation product obtained from p : p1diamino-diphenylmethane and formaldehyde as described in Specification 590,536 and then with phosphomolybdic acid or ammonium molybdate; (6) cotton fabric is dyed with Chlorazol Violet WBX, treated with the quaternary ammonium compound "Fixanol" (Registered Trade Mark) and finally with phosphomolybdic acid; (7) cellulosic fibre sold under the trade name "Rayolanda" (Registered Trade Mark) is dyed with Chlorazol Violet WBX and then with phosphomolybdic acid; (8) "Rayolanda" is dyed with Kiton Red G and after treated with phosphomolybdic acid.