baber/WOPTO huggingface dataset:
Patent GB-964300-A (GB)
Title: Papers,cardboards and other fibrous materials with a polyvinyl alcohol base
IPC: D21H13/16
Filed: 1962-07-09
Abstract: Felted fibrous materials of the type of paper and cardboard comprise fibres of three different types, of which at least two are of polyvinyl alcohol.  Polyvinyl alcohol fibres (acetalised or not) make up at least 40%, non-acetalized polyvinyl alcohol 5-50%, p  and acetalized polyvinyl alcohol fibres or water-resistant natural or artificial or other synthetic fibres or fibres of more than one of these kinds 50-90% of the whole by weight.  The water-resistant fibres may be of cellulose, polyamide or polyester, or of heat-treated and acetalized polyvinyl alcohol, and may have a coating of gelatine, sodium polyacrylate, polyvinyl alcohol or carboxymethylcellulose.  Part of the unacetalized polyvinyl alcohol fibres may be heat-treated.  In the examples, the fibres used are: (1) formalized heat-treated polyvinyl alcohol, heat-treated non-formalized polyvinyl alcohol and non-heat-treated non-formalized polyvinyl alcohol; (6) formalized heat-treated polyvinyl alcohol, non-heat-treated non-formalized polyvinyl alcohol and Kraft and (7) heat-treated non-formalized polyvinyl alcohol, non-heat-treated non-formalized polyvinyl alcohol and Kraft.  The Specification also describes for purposes of comparison papers employing fibres of two types only (Examples 2-4), polyvinyl alcohol fibres of one type only (Examples 5 and 9), and only 10% of polyvinyl alcohol fibres (Example 8).  Papers of the invention may be made by draining pulp on the machine by slightly inclining the draining table upwards while shaking it and operating at a suction speed that is not too high.
Patent GB-415896-A (GB)
Title: Continuously variable speed gear
IPC: F16H29/00
Filed: 1933-09-25
Abstract: 415,896. Variable speed gearing. PLATZER, J., 8, Burschlweg, Landeck, Tyrol, Austria. Sept. 25, 1933, No. 26398. Convention date, Sept. 28, 1932. [Class 80 (ii).] Variable-speed ratchet gearing comprises a universal joint 2 which imparts, through bevel gearing 3, 4, a periodically-fluctuating speed to the driving-member of a one-way clutch 5 driving a final driven-shaft 6. The latter carries a flywheel and is thus driven from the driving-shaft 1 at a speed corresponding to the maximum speed of fluctuation of the drivenshaft 21 of the universal joint. To vary this speed, the shaft 21 is turned about the axis of the bevel-wheel 4, thereby varying the angle of the joint 2, the axes of all elements remaining stationary for any given speed ratio. Two or more joints may be used instead of a flywheel. The Specification as open to inspection under Sect. 91 states also that the bevel gearing 3, 4 may be replaced by belt-and-pulley gearing or flexible shafting, arranged ahead or in rear of the one-way clutch, and describes with reference to Fig. 2 (Cancelled) an arrangement for utilizing the minimum instead of the maximum fluctuating speed of the universal joint. A reversely-acting one-way clutch 5 drives, through bevel gearing, a control-sun 7 of a three-element bevel epicyclic train, having a sun-wheel 8 secured to the final driven-shaft 9 and a planet-carrier secured to a driving- shaft 1 which drives the one-way clutch 5 through spur-gearing, a universal joint 2 and bevel-gearing 3, 4. The one-way clutch 5 is so arranged that the driven part can only overrun the driving part in the reverse direction, so that it acts as a torque-abutment permitting the control-sun 7 to rotate only at the minimum speeds of the joint 2, its maximum speeds causing idle overrun of the driving-member in the forward direction. In the coaxial position of the joint 2 the control-sun 7 is arranged to rotate at double the speed of the driving shaft 1, so that the driven sun 8 is at rest. To start the driven sun and increase its speed the joint 2 is moved progressively from the coaxial position. This subject-matter does not appear in the Specification as accepted.
Patent GB-409991-A (GB)
Title: Metal tube particularly for locating electrical conductors
IPC: F16L11/15
Filed: 1933-09-26
Abstract: 409,991. Metal tubes. POWER FLEXIBLE TUBING CO., Ltd., Derby Works, Finsbury Park, London.-(Meyer-Keller et Cie, Akt.-Ges., O. ; 45, Kellerstrasse, Lucerne, Switzerland.) Sept. 26, 1933, No. 26498. [Class 99 (ii).] A thin-walled metal tube, more particularly for use in locating electrical conductors, is formed with a shallow outwardly - projecting helical corrugation b, having straight portions a<1> between the convolutions thereof, to facilitate bending. The tube may be provided wth ventilating holes and also an insulating lining of thin rubber.
Patent GB-423378-A (GB)
Title: An improved electromagnetic relay
IPC: H01H29/16
Filed: 1933-09-27
Abstract: 423,378. Electromagnetic switches. HASLEV, A. M., 9, Frederiksplads, Randers, Denmark. Sept. 27, 1933, No. 26580. [Class 38 (v)] The soft iron bar armature 7 of an electromagnetic relay engages a contact 9 in a controlled circuit on attraction by an electromagnet 1 external to the evacuated casing 3. A projection 8 formed on the armature 7 is arranged to be immersed in mercury 5 connected in the controlled circuit and contained in a reservoir 4 formed in the container by which a permanent connection between the mercury and the armature is maintained during any operation of the latter. The poles of the electromagnet may be recessed into the upper side of the container but in a modification in which they are not so recessed the container may be turned over so that the body of mercury moves into an opposite recess, into which is arranged to project an additional projection formed on the other side of the armature. Various arrangements of fixed contacts above and below and at one or both ends of the armature may, alternatively, be made.
Patent GB-775169-A (GB)
Title: Amplitude band selection circuit
IPC: G01S1/02
Filed: 1955-09-16
Abstract: 775,169. Non-linear valve circuits; radar. BENDIX AVIATION CORPORATION. Sept. 16, 1955 [Sept. 30, 1954], No. 26632/55. Classes 40(6) and 40(7) In a circuit for producing an output which, as the input amplitude increases, first increases and then decreases, the input is applied to an adding circuit directly and also through an inverting amplifier responsive only when the input exceeding a predetermined level, the output from the adding circuit being applied to means sensitive only to signals of the same polarity as the input signal. In Fig. 6 the input is applied directly through path 2 to point 3 and also through an inverting amplifier 1 biased to the responsive when signals exceed a predetermined value. Accordingly as the input signal amplitude increases the voltage at point 3 increases until valve 1 becomes effective whereupon it decreases, as shown in Fig. 2c. The output from point 3 is applied to a cathode follower 4 biased to be effective for positive going signals only and so producing the output shown in Fig. 2d. Point 3 is also connected to an inverter 5 feeding a circuit 1<SP>1</SP>, 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP> similar to 1, 2, 3, 4 the output of which is added to the output from valve 4 so that as the input amplitude increases still further a further output, which rises and falls, is obtained as shown in Fig. 5. If the input signal is negative going, valves 1 and 4 should be biased to be normally conducting and adjustably biased rectifiers should be connected to the input of valves 1 and 4 to determine respectively the voltage at which amplifier 1 becomes effective and the minimum level of the signal which will pass through amplifier 4. In addition the inverter valve 5 should be omitted (Fig. 7 not shown). In Fig: 8, two circuits such as 1. 2, 3, 4 are connected in parallel to produce output at two different ranges of the input signal amplitude (Fig. 9j). The circuit may be used in a radar weather plotting system for producing isoecho contours such as are shown in Fig. 10, adjacent areas of the plot appearing as alternately light and dark regions.
Patent GB-1223525-A (GB)
Title: Manufacture of flat glass
IPC: C03B18/06
Filed: 1969-05-27
Abstract: 1,223,525. Float glass. ASAHI GLASS CO. Ltd. 27 May, 1969 [28 May, 1968], No. 26679/69. Heading C1M. In a float glass process, sonic or ultrasonic vibrations are applied to the surfaces of members located along the lateral edges of the advancing glass ribbon which contact the glass, so as to restrict adhesion of the glass to the members. The vibrations may be applied to restrictor tiles 15 or width-regulating members 20, 21, the tank liners 40 (not shown) or watercooled fences 30, 31 (not shown) by vibrators 24, 25. The liners may be of graphite or refractory material, and may be porous and supplied with an inert gas. Sonic vibrations are defined as having a frequency of 10 c./sec.-16 kc./sec., and ultrasonic vibrations as over 16 kc./sec. Preferably ultrasonic vibrations of frequency 16-250 kc./sec. and amplitude 1-30 Á are used in the high temperature part of the bath, and sonic vibrations, e.g. 10-100 cps., 20- 200 Á, in those parts below, e.g. 950 C.
Patent GB-354585-A (GB)
Title: Improvements in or relating to mixing machines for rubber and such like mixes
IPC: B29B7/24
Filed: 1930-09-09
Abstract: 354,585. Mixing-machines. SCHNUCK, C. F., New Haven, and BANBURY, F. H., Ansonia, both in Connecticut, U.S.A. Sept. 9, 1930, No. 26868. Convention date, May 23. [Class 86.] In a machine for mixing rubber &c., of the kind comprising a chamber in which a pair of members mounted on parallel shafts rotate, the chamber being fed by means of a vertically reciprocating weight working in a passage, the weight is provided with an inclined upper face providing a gap along one side ; the discharge door, forming part of the container wall between the rotors, is renewable. The sliding weight H, Fig. 1, cooperating with the feed passage F, has a sloping upper face K, Fig. 3, which is cut off at its lower edge U to leave a slot to enable powders to be fed to the machine by the reciprocation of the weight during the normal working of the machine ; the end faces Q, R are provided with flanges S, T. The gap U may be closed by filling pieces and cooling water may be circulated through pipes in the stem I. The discharge gate is provided with a renewable section Z.
Patent GB-518044-A (GB)
Title: Improvements in systems of control for electrically operated lifts
IPC: B66B5/00
Filed: 1938-09-15
Abstract: 518,044. Controlling lifts. EXPRESS LIFT CO., Ltd., and HUNT, S. T. Sept. 15, 1938, No. 26893. [Class 40 (i)] In a collector type lift system, operation of the emergency stop-button cancels only such stored calls as were made from the car itself and preferably prevents other calls from being effective until a further car call has been stored or the passenger has left the lift. In the arrangement shown, the switch FS, operated by the passenger's weight, energizes F which locks up when the circuit of GL is completed through the floor gate contacts Gl ... G4 and the car gate contact G5. Operation of a floor-selecting push in the car energizes one of the relays A ... D and this locks up, breaks a short-circuit on one of two direction-determining relays RA, RB, which was imposed by one of the relays W ... Z, each of which corresponds to a floor, when the car stopped. Relay RA or RB energizes the appropriate' contactor CU or CD. RA operates and RB. prevents the operation of direction indicating relay DR. As the car reaches each floor an inductor relay N gives an impulse to magnet WU or WD according to the direction to drive a wiper L, over which the relays W ... Z are energized, to successive positions corresponding to the car positions. When the selected floor is reached the corresponding relay W ... Z energizes the stop relay S which releases CU or CD to stop the motor. A circuit is made also for the releasing winding of the operated relay A ... D which falls back and replaces the shunt on RA or RB. Up and down calls are made from the landings by means of pushes UP2 . ... UP4 and DP1 ... DP3 controlling relays UB ... UD and DA ... DC which act similarly to the relays A ... D. These relays co-operate with DR so that a rising car does not stop for a call to descend from one floor while there is a demand from a higher floor and vice versa. If a passenger operates the emergency button ES, the lift is stopped at once and a normally operated relay E is released to release any operated car call storage relays A ... D. Relay E also renders the floor call storage relays ineffective as regards the direction determining chain and consequently RA or RB falls back and neither can be operated except from the car unless the passenger leaves it and the relapse of F accordingly re-operates E. Relay E is also re-operated when one of the car storage relays A ... D is energized..
Patent GB-190572-A (GB)
Title: Improvements in or relating to tractors, motor-lorries, motor-sleighs and the like
IPC: B60B15/18
Filed: 1921-10-11
Abstract: 190,572. Roberts, H. W. B., and Sweetnam, G. Oct. 11, 1921. Non-circular substitutes for wheels.-A wheel for tractors and the like is formed of a number of bars 43, Fig. 3, pivoted together and to feet 20, the centres of alternate bars being pivoted to the ends of the spokes 88 of two sets. Each set of spokes 38 is fixed to a boss which is loosely mounted on an axle and a driving member having dogs 40 engaging the spokes is keyed to the asla between the bosses of the two sets of spokes. A roller 13 may press against a flat surface on the bars 43 and be urged outwardly by a laminated spring 18. The feet 20 may be pivoted about a pin 26, their movement being limited by an arm 30 on a square shank of the pin 26 engaging springs 31, Fig. 5, in the feet. The feet 20 may be tilted by a spring-pressed arm 24, Fig. 4, on the vehicle engaging an extension 25 of the feet. The treads 34 may be detachable as shown in Fig. 4.
Patent GB-1189914-A (GB)
Title: Film Sheet Changer
IPC: G03B42/02
Filed: 1968-06-06
Abstract: 1,189,914. Serial film changer and X-ray film cassette. AXEL KISTNER A.B. 6 June, 1968 [30 June, 1967], No. 26972/68. Heading H5R. A film sheet changer includes a feeding station with a store 55 of unexposed film sheet, a feeding device including one or more friction means 43 adapted to be rotated intermittently to remove sheets singly from the store to an exposure station 3 which includes a movable and a stationary intensifying screen-4 and 5 respectively-between which the film is held during exposure, and a conveyer to convey film sheets from the exposure station to a collecting station which has a store 59 for exposed films. Preferably the friction means 43 are displaceably connected to stud or studs 40 fixed to intermittently rotating shaft 38, the stud 40 being tubular, and a trunnion 41 having a disc 42 to support the friction means 43 is displaceable, e.g. by spring 44, to abut the film sheets in certain angular positions of the shaft. The store 55 preferably holds the unexposed film sheets in a semicircular arc, the stores 55 and 59 comprising containers adapted to be transferred between cassettes 45 insertable into a support in the casing 1 and semicircular grooves in the walls of the feeding and collecting stations respectively Preferably the storage container 47 has, as shown in Fig. 7, a flexible base 48 and longitudinal sides 50 with notches 51, the upstanding portions 52 having lips 53 to retain sheet film therein. The storage container 47, together with outer housing 46 forms cassette 45, the housing being provided with flaps 49 at each end, one end 54 of the container 47 being inclined. After inserting the cassette into the housing 1, either of the flaps 49 may be raised to slide the container 47 into either the feeding or the collecting station. Similarly a container of exposed film may be withdrawn from the collecting station into an appropriately positioned housing 46, the completed cassette 45 being withdrawn for processing. The conveyer as shown in Fig. 3 comprises two parallel endless belts 18, 19 running over driving wheels 16, 17 and idling wheels 20 and 21. Each belt has two lugs 34, 35 spaced as far apart as possible around the belt serving alternately as stops and drivers for film sheets fed from the feed store and to the collecting store. A film brake 61 is fitted to hold a film sheet near its leading edge against rearward movement when the film is fed to the exposure position, each brake (Figs. 8 and 9, not shown) includes a roller or ball in a recess which is so shaped that the roller or ball is pressed against the film if it moves backwards, but the ball rises to free the film if it moves forward. Clutches 13 and 37 are fitted to drive shafts 14 and 38 so that the conveyer and the friction means may be individually and adjustably, controlled. The movable screen 5 may be supported by two or more sheet springs 28, 29 connected to guide rods 26, 27 which rods are movable, e.g. under the control of an electromagnetic clutch 31 to straighten the springs and move screen 5 towards screen 4.
Patent GB-260766-A (GB)
Title: Improvements in hoppers or receptacles for facilitating loading vehicles
IPC: B65G67/24
Filed: 1925-10-28
Abstract: 260,766. Smith, E. J. Oct. 28, 1925. Addition to 255,511. Vehicle fittings.-The bracket devise described in the parent Specification supporting the unloading hopper b is modified to provide more clearance beneath the bracket arms, to be readily dismantled, to provide lifting tackles for raising the hopper into place, and to permit of supporting the hopper at a greater height and with greater outreach. The bracket arms q are supported towards their outer ends bv chains r hung from derrick arms s. The arms q and s are pivoted on sockets q<1>, s\ adjustable on a bar o, at each end of the wall a of the wagon, and a hook p also adjustable on the bar o secures the bracket structure o, q, s to me wall at any desired height. The derrick arms s are anchored by cables t passing over sheaves t<1> and secured to eyes t<2> adjustable on the bars o. The derrick arms carry headsheaves u<0> and lifting tackle, not shown, for raising the hopper b by means of the eyes b'. The wheels u on the hopper are set back from the front edge to increase the outreach when the wheels engage the stops q<3>. In use, the tilting of the hopper is limited by links w pivoted to the arms q, and temporarily pivoted to the hopper at w<1>, and notched segments v are also provided on the hopper for engagement in various positions with a bar q<2>. In a modification, Fig. 3, suitable for use on low wagons, the bars o are integral with the hooks p and extend upwards forming a guideway on which the bracket structure q, x, s, can be raised by a hand winch V.
Patent GB-501217-A (GB)
Title: Improvements in or relating to hydraulic lifts
IPC: B66F7/20
Filed: 1937-10-06
Abstract: 501,217. Hydraulic garage. lifts. EPCO, Ltd., and KINGSLEY, S. Oct., 6, 1937, No. 27033. [Class 78 (iii)] Hydraulic garage lifts of the kind employing a platform or duplicate track carried by four hydraulic cylinders working on corner posts or pillars, have the cylinders connected in pairs and the pairs of cylinders also interconnected by mechanical compensating gear to prevent lateral or longitudinal tilting of the platform under uneven load. The Figure shows the arrangement in plan. The cylinders 1, which move on fixed corner posts, are connected in pairs by the girders 2 carrying the,load-supporting platform 3. The girders 2 carry brackets 4 forming bearings for shafts 5 which have pinions 9 gearing with fixed racks 10 adjacent the corner posts. The two shafts 5 are inter-connected by a longitudinal shaft 7 and bevel gears 6. Excess movement of any cylinder causes an extra rotation of the corresponding pinion 9 which is communicated to all the other pinions through the gearing. Pawl-and-ratchet mechanism 12, 13 may be fitted to one shaft 5 to prevent the raised lift from running back ; lowering being possible only when the ratchet gear has been disconnected by hand operation.
Patent GB-1194303-A (GB)
Title: Cesium Evaporator.
Inventor: TAKASHIO HARUO
IPC: H01J9/12
Filed: 1968-06-06
Abstract: 1,194,303. Electrode materials and processing. TOKYO SHIBAURA ELECTRIC CO. Ltd. 6 June, 1968 [10 June, 19671, No. 27036/68. Heading H1D. Cesium for evaporation on to the faceplate of a photo-electric tube is generated from a mixture of silicon powder and cesium chromate and/or cesium bichromate powder, in which the silicon powder has a particle size distribution such that the average particle size is between 30 and 80 microns and that particles larger than 100 microns and those smaller than 1 micron separately account not more than 30 weight per cent of the silicon, and the cesium chromate and/or cesium bichromate powder has a particle size distribution such that the average particle size is between 3 and 10 microns and that particles larger than 25 microns represent not more than 30 weight per cent and those smaller than 0À5 micron occupy not more than 40 weight per cent, and the powdered mixture is free from water. The powder mixture, comprising 2 parts by weight of silicon powder to 1 part of chromate powder which is also free of adsorbent gases &c., may be mounted in a metal envelope having a series of holes in it and a fixed electric heating current supplied to deposit a uniform cesium layer, for example on a thin Ag-Bi or Sb film constituting the metal base of the face plate. A method of forming the powders in the prescribed form which involves steps of sieving, washing, drying and pulverizing is described. The particle sizes given are as measured by a micromerograph.
Patent GB-755585-A (GB)
Title: Electric switch-gear arrangement incorporating an air blast circuit breaker
IPC: H01H33/867
Filed: 1954-09-20
Abstract: 755,585. Air break switches; automatic circuit breakers. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Sept. 20, 1954 [Oct. 22, 1953], No. 27125/54. Class 38(5) In order to prevent the unintentional closure of a circuit by closing of pneumatically-opened breaker contacts 2, 3 by spring pressure due to a decrease of the air pressure, a normally-closed disconnecting switch 11 is operated to open before the breaker contacts close when the pressure falls below a certain limit. The switch 11 is operated by a rod 12 locked in position by a pawl 16, and, when the pressure drops in supply pipe 8, contacts 26, 29 close, contacts 30, 31 being already closed due to full air pressure in pipe 10, thus completing a circuit through contacts 31, 29 and the coil of an electromagnet 33. which attracts the pawl 16 thus allowing spring 13 to open the switch 11. On restoration of the air pressure in pipe 8, contact 26 closes contacts 27 thus completing a circuit over contacts 28, and coil 19 of a compressed-air valve 18, and causing the armature 20 to open valve 18 so that air from pipe 17 flows into cylinder 14 and piston 15 moves rod 12 downwards until pawl 16 engages shoulder 32 on the rod. The disconnect switch is prevented from opening when the breaker is closed since valve 9 is closed and pipe line 10 is not under pressure, so that the contacts 31 are open and there is no circuit to the electromagnet 33. In the case of switchgear where the disconnect switch opens every time the braker opens, the switch is arranged to be locked open in case of a decrease in the air pressure.
Patent GB-185976-A (GB)
Title: A rabbit trap
IPC: A01M23/24
Filed: 1921-10-13
Abstract: 185,976. Folley, H. J. Oct. 13, 1921. Addition to 163,183. Animal traps.-A rabbit trap comprises a frame A having a pointed part to be forced into the ground and a spring-actuated frame B pivoted to the frame A. To set the trap the frame B is forced over against the action of the spring C so that the lever G when in a vertical position engages at the lower end with the catch D. The rabbit, on passing its head into the noose, pulls on the wire H and releases the lever G and frame B, which pulls the noose tight.