baber/WOPTO huggingface dataset:
Patent GB-182675-A (GB)
Title: Improvements relating to portable back rests and the like
IPC: A45F3/26
Filed: 1921-06-23
Abstract: 182,675. Bromilow, H. J., and Seares, C. W. June 23, 1921. Folding seats; bed &c. rests.-A collapsable back-rest and ground seat, which may also be used as a bed-seat, comprises side bars 1, 2 supporting a sheet of fabric 12, 13, and constituting at their upper ends, sockets for the reception of a removable cross-bar 10, rotatable collars 5 on the bars 1, 2 carrying pivoted struts 7. Points 4, 9 and collars 3, 8 may be provided on the ends of the members 1, 2, 7, and these ends may Le connected by cords, straps or a sheet of canvas.
Patent GB-710822-A (GB)
Title: Improvements in or relating to machines for carrying out washing, rinsing, mixing, stirring or like operations
IPC: D06F17/06
Filed: 1952-07-09
Abstract: 710,822. Mixing appliances. ETABLISSEMENT SOPITEX. July 9. 1952 [July 21, 1951]. No. 17264/52. Class 86 [Also in Groups VIII and XXIII] An impeller 3 for a mixing machine has a smooth, substantially streamline surface including at least one convexity or elevated feature 11 and at least one concavity or depressed feature 12 which merges with the convexity and is bounded around that part of its periphery remote from the convexity by a flat rim 13, the impeller being rotated continuously in one direction about vertical, horizontal or other axis. The impeller rotates in an eccentric recess 6 in a tub 1, and its underside is formed as a flat-dished plate 3<SP>1</SP>. The tub 1 has vertically extending ribs 10 around its inner wall. The impeller may be rotated by an electric motor or manually.
Patent GB-1345604-A (GB)
Title: Storage circuit
IPC: G11C19/28
Filed: 1971-05-27
Abstract: 1345604 Semi-conductor data storage cell INTERNATIONAL BUSINESS MACHINES CORP 27 May 1971 [30 June 1970] 17441/71 Heading H3T [Also in Division G4] A capacitor storage cell C28, C33, T44, T46 has its stored data refreshed or maintained by a transistor 50 cross-coupled with T46 (Fig. 1). C28 is charged by a pulse 16 (Fig. 1A) at terminal 14 via R22, D24 and line 26, and discharged or not by T44 if the data input 10 is high or low respectively, when a negative pulse 56 occurs at T44 emitter 30; then C33 is charged by pulse 32 at 30 via R36, D38 and discharged or not by T46 when a negative pulse 52 occurs at T46 emitter 14 depending upon the stored voltage on C28. To regenerate the information stored to allow for leakage, a similar cycle of pulses is applied at times t 5 -t 8  but instead of T44 discharging C28 in dependence on the input, T50 is biased by a pulse 50 at 58 to discharge C28 or not according to the already stored level on C33. The transistor 50 may be replaced by a cross-coupled pair (T128, 130, Fig. 2, not shown) and in this case stored, information is maintained merely by a constantly applied negative level - V at their commoned emitters (134). A shift register (Fig. 3, not shown) has a plurality of these cells (156-m) in each row (150-n).
Patent GB-562885-A (GB)
Title: Improvements in and relating to dials for instruments requiring frequent recalibration
IPC: H03J1/06
Filed: 1942-12-08
Abstract: 562,885. Indicating-apparatus. ULTRA ELECTRIC, Ltd., PAYNE, W. C., and FOOKES, E. G. Dec. 8, 1942, No. 17458. [Class 106 (iv)] [Also in Group XXXVI] A dial unit for use in instruments requiring frequent recalibration comprises a scale plate capable of receiving readilyerasable scale markings and - a window movable within the dial unit to uncover the scale plate for recalibration purposes and then to cover it again to protect the markings. In one form, Figs. 1, 2, the dial unit comprises a knob 1a having a flange 1 to which is secured the scale plate 4. The scale is viewed through an opening 1c in the flange 1. A transparent window member 2 normally occupies the position shown, but can be rotated into the recess 1b between the flange 1 and the scale plate 4 to uncover the front of the scale plate. The rotation is effected by moving a lug 3 attached to the window member and engaging recesses 1d in the edges of the opening 1c. The dial unit is secured to the spindle 11 of an instrument and is driven by a slow-motion friction drive comprising a knob 15 operating a friction disc 13 engaging a plate 6 attached to the dial unit but spaced therefrom by a washer 5. Movement of the dial unit is limited by a lug 7a engaging stops 8. In a modification, Fig. 5, the dial unit comprises a knob 1a, a flanged disc 1 and a scale plate 4. This last, in conjunction with the flanged disc 1, forms the recess 1b in which is mounted the transparent window member 2. The scale markings are viewed through the opening 1c in the flanged disc 1. The dial unit is driven by a slow-motion friction device (not shown) acting on a metal ring 6a moulded in the flanged disc 1. The motion is limited by a fixed pin engaging a groove 4a in the back of the scale plate 4.
Patent GB-612955-A (GB)
Title: Improvements in or relating to lighting fittings
IPC: F21L14/00
Filed: 1946-06-11
Abstract: 612,955. Electric light fittings. GENERAL ELECTRIC CO., Ltd., and McLEOD, A. E. June 11, 1946, No. 17458. [Class 75 (ii)] In an electric light fitting such as a hand lamp for stroboscopic purposes comprising a gallery carrying a cylindrical or substantially straight-sided shade, well-glass or the like the body portion 1 which may be of moulded insulation material is formed with an outwardly tapering socket extension 3 slotted to form fingers 8 having undercut ends 7 which are moved inwardly to grip the well glass 4 by raising a brass sleeve 10 on the extension 3. The body 1 may be formed with a frusto-conical seating to receive the open end of the well glass and be integral with a hand-grip 2.
Patent GB-1301803-A (GB)
IPC: H02M7/525
Filed: 1971-05-27
Abstract: 1301803 Inverting; reactive current converters ALLMANNA SVENSKA ELEKTRISKAAB 27 May 1971 [28 May 1970] 17463/71 Heading H2F In a variable frequency inverter, capacitive current is supplied to the load 4 by means of an auxiliary circuit comprising inductor R2 and controlled rectifiers 21 ... 24, the capacitive current being adjustable by variation of the delay angle of thyristors 21 ... 24. As described, the variable frequency inverter S 1 supplies power to an induction furnace represented by 3, 4, tuned to resonance by capacitor 2. The thyristors 11 ... 14 are triggered with a delay angle between 90 and 180 degrees so that they invert power from a diode or thyristor rectifier 1. The thyristors 21 ... 24 of the auxiliary converter S2 are triggered at an angle of approx. 90 degrees, the angle being adjustable to follow changes in the frequency of the main inverter S1. The bridge of thyristors S2 may be replaced by an anti-parallel pair of thyristors (Fig. 2, not shown) connected in series with inductor R2 or (Fig. 3, not shown) connected to opposite ends of a centre-tapped inductor. Triggering circuits for thyristors.-A free running oscillator 30, Fig. 6, delivers pulses at four times the required frequency to a frequency halving switch 31, alternate pulses from which are differentiated at 32 and used to trigger a further frequency halving switch 33 which, after amplification at 34, 35, supplies triggering pulses to the auxiliary thyristors 21 ... 24. The other outputs from 31 are differentiated at 36 and repetitively turn on the electronic switch 37 of a sawtooth generator 37 ... 40 the output of which triggers a level discriminator 44 at a time determined by the setting of a biasing potentiometer 43, The thyristor pairs 11, 12 and 13, 14 of the main inverter S1 are thus triggered alternately under control of a logic circuit 45 ... 49, at an angle determined by potentiometer 43. The frequency is thus adjustable at 30 and the amplitude at 43; retroactive control of amplitude or frequency may be employed. Three such inverters may be combined to form a polyphase system.
Patent GB-800508-A (GB)
Title: Improvements in devices for humidifying the intake air of combustion engines
Filed: 1956-06-06
Abstract: 800,508. Carburetters; humidifying air. SOC. HYGROTECHNIQUE. June 6, 1956 [June 11, 1955], No. 17492/56. Class 7(3) [Also in Groups XII and XXVI] In a device for humidifying the intake air of a combustion engine, a water reservoir is provided with a first inlet pipe, the inner end of which is arranged to remain at a substantially constant distance below the surface of the water, and an outlet conduit for connection to the combustion engine, between the mouth of which and the surface of the water is disposed a perforated plate, and a second inlet pipe is provided the inner end of which is positioned adjacent the bottom of the reservoir and through which air is admitted to the reservoir when the intake suction of the engine exceeds a predetermined value. A carburetter comprising a nozzle 12 is associated with a water container 1. Thus water and air is drawn into the carburetter through the pipe 8. The air enters through a tube 4 which is carried by a flexible insert 3 and has a float 5 at its free end. Make up air may be provided by a tube 26. In a modification (Fig. 2) there may be two floats at the free end of the tube 4. The free end of the tube may comprise two branches as shown or a single tube as in Fig. 1. In another modification (not shown) there may be two tubes projecting from opposite sides of the container.
Patent GB-1384320-A (GB)
Title: Apparatus for automatic monitoring of presence fo the methane  in air
IPC: G01N21/45
Filed: 1972-04-17
Abstract: 1384320 Monitoring methane in air photoelectrically POLSKIE ZAKLADY OPTYCZNE 17 April 1972 [3 May 1971] 17525/72 Heading G1A In an apparatus for monitoring the presence of methane in an air sample flowing through a measuring chamber 8 of an interferometric device a movable slot 13 defines the portion of the interference pattern viewed by a photo-cell 14 whose output actuates a warning device when a pre-set CH 4  level is exceeded. To calibrate the device the measuring chamber 8 and reference chambers 5, 11 are filled with the same gas, and the slot 13 is moved to give a minimum photo-cell output. The air under test is then flowed through the chamber 8 and the presence of CH 4  actuates an audible alarm 20 and/or a flashing light 21.
Patent GB-400886-A (GB)
Title: Improvements in and relating to supply and control systems for electric motors
IPC: H02P7/34
Filed: 1933-06-20
Abstract: 400,886. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Mills, B. M.; 1253, Baker Avenue, Schenectady, New York, U.S.A.) June'20, 1933, No. 17557. Convention date, June 30, 1932. [Class 38 (iii).] In a system where two generators G are connected in series to supply a motor, driving, for example, excavating machinery, and in which differential series windings 15, 21 give each generator a drooping characteristic, the system is stabilized and the load divided proportionately between the generators, particularly when heavily loaded by providing each with an exciting winding 17, 23 responsive to the voltage of the other. The drive is controlled by separately excited field windings 16, 22 in series with a resistance 26 and each dynamo has a compensating winding 14, 20.
Patent GB-944099-A (GB)
Title: Improvements in roof gutter strainers
IPC: E04D13/076
Filed: 1960-05-19
Abstract: 944,099. Roof gutters. G. B. READ. May 18, 1961 [May 19, 1960]; No. 17644/60. Heading E1V. A roof gutter strainer 8 of open ended trough shape corresponding to the inner profile of the gutter 1 is detachably accommodated in the gutter over the discharge point. The strainer may be entirely removed from the gutter for clearing clogging matter, but in the exemplified embodiment it is carried by a lever 10 pivoted to a support 4 clipped to the gutter, the lever 10 having an arm 11 overhanging the gutter whereby downward movement of the arm, for example with the end of a pull rod 12, causes the strainer to be partly inverted to discharge any foreign matter over the side of the gutter.
Patent GB-696902-A (GB)
Title: Improvements relating to optical lenses
IPC: G02B9/34
Filed: 1950-07-15
Abstract: 696,902. Optical objective. WRAY (OPTICAL WORKS), Ltd., and WYNNE, C. G. Oct. 12, 1951 [July 15, 1950], No. 17752/50. Class 97 (i). An objective of a relative aperture of f/1.0 or larger comprises a convergent front part, an intermediate compound meniscus convex towards the front and a convergent rear part having a front surface convex to the front, the front part consists of at least two convergent components one of which is a meniscus doublet convex towards the front and formed of a convergent element and a divergent element, the former of which has a refractive index not less than 0.04 lower than that of the divergent element, the intermediate compound meniscus has an axial thickness greater than 0.4 of the focal length f of the objective and is formed of a convergent element and a divergent element, the former of which has a refractive index not less than 0.04 lower than that of the divergent element, and the convergent rear part has a total axial thickness greater than 0.35f; the convergent front part and the intermediate compound meniscus up to but not including its rear surface is substantially corrected for spherical aberration and coma, the uncorrected field curvature and astigmatism of that forward part of the lens is corrected by selecting the curvatures and positions of the rear surface of the intermediate compound meniscus and of the front surface of the rear convergent part and the resulting loss of convergence is substantially restored by providing the rear convergent part with a rear surface of a larger radius of curvature and placed not more than one-tenth of the focal length away from the focal plane. Optical data are given for the objective shown. The total axial thickness of the convergent front part, which consists of the lens A and doublet B1, B2 is preferably greater than 0.35F. Preferably also, the radius of curvature r8 of the rear surface of the intermediate compound meniscus C1, C2 is greater than that of the front surface r9 of the convergence rear part D1, D2 and r8 may lie between 0.5 and 0.33 of the distance lc between that surface and the point P at which a paraxial ray PR intersects the optical axis. The convergent elements in the objective may be made of a rare earth oxide glass having a refractive index not less than 1.65 and an AbbÚ value not less than 40, the divergent elements of the convergent front part and of the meniscus doublet preferably being made of an extra dense flint glass having a refractive index not less than 1.65 and an AbbÚ number less than 35.
Patent GB-788753-A (GB)
Title: Improvements in portable water-distillation apparatus
Inventor: DOWSETT EDWARD WALTER
IPC: C02F1/14
Filed: 1955-06-20
Abstract: <PICT:0788753/III/1> <PICT:0788753/III/2> In a solar still of the type having a transparent inflatable shell 1 which surrounds a fabric bag 4, there being a feed-pocket 6 at the top of the shell with a nozzle 7 for delivering sea water on to the bag, the nozzle is provided with a plastic mono-filament 14 which passes through the nozzle and is attached to the top of the fabric bag, the ratio of the respective diameters of the filament and the nozzle-passage 15 being 1 : 1.2.  The mono-filament may be made of nylon, polyvinylidene chloride, or plastics based on terephthalic acid.  This feed device ensures a correct rate of flow of sea water to the fabric bag 4 so that it is maintained in a thoroughly soaked condition without water cascading down the sloping top of the bag on to the shell.  The sun's rays pass through the transparent shell, which may be made of polythene, and evaporate water from the soaked bag; the vapour condenses on the inside surface of the shell, and the condensate flows down into compartment 11 through perforations 10 in wall 8.  In a still wherein the diameter of the shell is 24 inches, the nozzle-passage is 0.0045 inch diameter and the filament is 0.0038 inch diameter.  Secured to the wall 8 there is a ballast compartment made in the form of an annular tube 12 which is filled with sea water from pocket 6 through tube 13, so as to stabilize the still when it is floating on the water.  The bottom of the shell is provided with an opening 16 covered by a strainer-cloth 17, which performs the function of discharging excess brine without allowing the pressure in the still to decrease.
Patent GB-497759-A (GB)
Title: Improvements in or relating to staple inserting devices
IPC: A43D5/12
Filed: 1937-06-26
Abstract: 497,759. Stapling. BRITISH UNITED SHOE MACHINERY CO., Ltd., and JAMES, C. H. June 26, 1937, No. 17837. [Class 89 (iii)] A hand stapling tool, particularly for use in the upper-conforming operation described in Specification 482,666, is provided with a fullstroke mechanism comprising a pawl 47 pivoted to the casing 1 and a shoulder 53 on the plunger 7. If the plunger makes an incomplete stroke, its shoulder is engaged by a lug 57 of the pawl. If a complete stroke is made, the head 5 of the plunger engages a finger 51 of the pawl and rocks it so that the lug 57 cannot engage the shoulder. The pawl is held in its extreme positions by a spring plunger 65. The plunger 7 is tubular and is raised by a spring 15. The nozzle, which is narrow and elongated, is formed of a block 19 carrying a magazine 29 and a block 27 to which is pivoted a deflecting plate 33 designed to bend the staple legs outwardly during driving. The block 27 is axially adjustable on the block 29 to vary the position of the deflector. The driver 3 is T-shaped and is secured to the plunger 7 by a block 14 and key 17.
Patent GB-311581-A (GB)
Title: Veterinary eye shield for dogs
IPC: A61D9/00
Filed: 1928-06-20
Abstract: 311,581. Gibson, J. June 20, 1928. Bandages; protectors and shields. - A veterinary eye shield for dogs consists of interlaced leather straps passing over the dog's head and encircling the snout and carrying an eye shield which is made of soft green or white material and can be secured to cover one or both eyes. A strap A encircles the dog's neck and is fastened at the back to a buckle on a strap C. A strap F which joins strap C encircles the snout and is connected by a strap B passing up between the eyes to strap A. A strap D extends from one side to the other of strap F, crossing the head and strap B above the eyes. Straps E, one on each side, connect on one side straps A, D, F and on the other side straps C, D, F and enable the shield to be fixed to strap B to cover one or both eyes. The straps hold the shield in a position from which the dog is unable to move it.
Patent GB-516003-A (GB)
Title: Combination sink, washing and/or drying appliance
IPC: A47L17/02
Filed: 1938-06-16
Abstract: 516,003. Sinks. NIELD, W. H. June 16, 1938, No. 17883. [Class 26] [Also in Group VIII] A sink constructed for use as a washing- apparatus comprises an open-topped substantially semi-circular receptacle a journalled in a frame c and lined or provided with a corrugated portion a<2>. The receptacle may be locked stationary to serve as an ordinary sink or may be oscillated by hand or from an electric motor g through gearing including a crank f and connecting rod e, to serve as a washing-machine. The receptacle is provided with a drain-cock a<3> discharging into a sump b leading to a drain. A wringer i may be mounted on the frame c adjacent the sink and a drying chamber j having racks j' for the goods is provided alongside. Air is supplied to the drying chamber by a fan k driven by the same motor that rocks the receptacle a.
Patent GB-1452720-A (GB)
Title: Coating apparatus
IPC: B23K35/40
Filed: 1975-04-30
Abstract: 1452720 Vapour deposition apparatus INTERNATIONAL BUSINESS MACHINES CORP 30 April 1975 [31 May 1974] 17910/75 Heading C7F  Molten material 9, e.g. Al or Cu-Al, is evaporated on to a substrate, e.g. a semi-conductor, mounted on a holder 37 which is rotatable about two axes and mounted on a pivoted cover 30. The material may be heated by an electron beam. A pivoted shutter 18, and fixed shield 70 are provided. In a modification, Fig. 5, (not shown) several substrate holders are rotated about their own axes and a parallel axis.
Patent GB-685790-A (GB)
Title: A new or improved carrying implement
IPC: A01D11/00
Filed: 1950-07-18
Abstract: 685,790. Holding and picking-up tools. LORD, A., and WRIGHT, J. L. May 28, 1951 [July 18, 1950; Sept. 29, 1950], Nos. 17927/50 and 23891/50. Class 61 (ii). [Also in Group XXX] An implement intended particularly for carrying a bale of hay, straw or like packaged material comprises a pointed shank 1 provided with a handle 3 and pivoted fingers 8, 9. The appliance is forced into the bale and at a suitable depth the fingers are extended, Fig. 2, to form a barb which prevents withdrawal when the handle is lifted. The appliance is detached by retracting the fingers and pulling it upwards. The hollow shank 1 is formed with slots 6, 7 near its point 2 through which the fingers 8, 9 can pass. These fingers are mounted loosely on a pin 10 which is carried by the shank and passes through slots 16, 17 in a cylindrical member 11. This member can slide in the shank and has slots 13, 14 for the passage of the fingers 8, 9. A sleeve 18 provided with a flange 19 is mounted slidably on the shank and carries a pin 20 which passes through a slot 22 in the shank and is screwed into the member 11. The sleeve 18 is urged downwards by a compression spring 23 which bears against the flange 19 and the bolt 4 securing the handle 3. A locking lever 21 mounted on the bolt 4 and acted on by a spring 24 is formed with an aperture 27 to receive the pin 20. When the appliance is forced into the bale, the collar 18 is moved upwards and a pin 15 mounted near the lower end of the member 11 bears against the undersurfaces of the fingers 8, 9 and forces them outwards. When pressure is exerted on the part 25 of the lever 21, the pin 20 is released and the fingers retracted as soon as an upward pull is exerted on the appliance.
Patent GB-570764-A (GB)
Title: Improvements in or relating to driven plates for friction clutches
IPC: F16F15/123
Filed: 1943-10-29
Abstract: 570,764. Friction clutches. BORG & BECK CO., Ltd., and GODFREY, L. P. Oct. 29, 1943, No. 17939. [Class 80 (ii)] The driven plate of a friction clutch comprises a pair of plates 14, 15, spaced apart by rivets 19 and mounted on opposite sides of a flange 13 on a hub member 10. The plates 14, 15 have slight radial freedom relatively to the hub 10. Cushion springs 24 are located in registering apertures in the plates 14, 15 and flange 13, the springs being retained in position by wires 25 such as described in Specification 369,810. To permit centralization of the plates 14, 15 relatively to the hub 10, holes 31 arranged inwardly of the rivets 19 each accommodate a ball 33 which is of such a size as to yieldingly spread the plates 14, 15 apart. Such balls, of which there may be two, arranged diametrically opposite to one another by their frictional contact with the plates 14, 15, also assist in damping torsional vibrations as the springs 24 yield during driving. Instead of the balls 33, plungers with hemispherical or domed-shaped heads may be used. Alternatively, the inner zone of the flange 13 may be thickened for a part or the whole of its circumference on one or each side thereof.
Patent GB-1365211-A (GB)
Title: Pressure cookers
IPC: A47J27/08
Filed: 1972-04-19
Abstract: 1365211 Pressure cooker PRESSURE COOKERS & APPLIANCES PRIVATE Ltd 19 April 1972 18083/72 Heading B1X [Also in Division C7]   A pressure cooker 13 with handle 12 has a lid handle bar 1 which is made of curved section along its width such that it is of concave shape at its lower face, the curved section extending along a major part of the length of the lid handle, the bar being made of aluminium alloy having one of two specified compositions (see Division C7). The curvature in the middle of the width of the handle bar may be greater at the centre than at the sides (Fig. 4A not shown). The lid handle bar may have heat insulating material (5) rivetted to it by rivets 9. The cooker handle carries fixed fulcrum pin 11 which engages in the curved part of the lid handle bar when the lid is in its correct position.