baber/WOPTO huggingface dataset:
Patent GB-1192171-A (GB)
Title: Measuring System
Inventor: HOWBROOK ERNEST
IPC: H03M1/00
Filed: 1966-03-24
Abstract: 1,192,171. A/D converters. DAVY & UNITED INSTRUMENTS Ltd. 23 June, 1967 [24 March, 1966], No. 13057/66. Heading G4H. Load cells 13 provide a variable A.C. input, representing for example the weight of a ladle containing steel, and counter 22 is controlled by pulses fed through gate 17 until the output of D/A converter 23 balances the input, load cells 13 and converter 23 being supplied from the same power source 14. Phase-sensitive demodulator 16 opens gate 17 in response to a non-zero error signal from amplifier 15, and pulses from a fast clock source 20 pass to counter 22 until the error falls below a preset level, whereupon switch 18 selects a slow clock source 21 having a period greater than the likely duration of input transients. The direction of counting is controlled by lines 19B, 19C. To give an indication of true weight, counter 22 is first advanced in response to the empty container acting on load cells 13, the count obtained, representing the tare weight, is transferred to memory 26 so that converter 27 opposes the input and counter 22 is counted down to zero again. The amount of material subsequently placed in the container is then indicated by the count registered in counter 22. An auxiliary counter may be used to indicate change or rate of change in weight, Figs. 2, 3 (not shown).
Patent GB-276419-A (GB)
Title: Improvements in or relating to electrical transmission circuits
IPC: H04B3/14
Filed: 1926-05-21
Abstract: 276,419. General Electric Co., Ltd., and Bartlett, A. C. May 21, 1926. Attenuation equalizers and similar impedance networks.-Comprises means for preventing distortion in a telegraph or telephone line having inductance, capacity and resistance but not leakance. The line can be rendered distortionless, by inserting in it at any point a network such that the propagation constant of the combination is of the form A+jpB where A, B are independent of, and p is proportional to, the frequency. If L, R. C be the inductance, resistance and capacity per unit length of the natural line, and the leakance be zero, the impedance of the required network must be equal to the characteristic impedance Zo of the natural line and its propagation coefficient must be l# where l is the length of the natural line and l# is the difference between A+jpB and the propagation constant of the natural line. A<2> being l<2> CR<2>/L while B<2>=l<2>LC, To this end the network is constructed as shown in Fig. 1, where a=Zo tan (l#/2) and b=Zo coth (L#/2). In order that they may have these values, the impedances a and b are respectively composed of systems, as described below, made up of lines whose impedances are respectively Zo# and Zo/#. By calculating Zo and the propagation constant in terms of R, L and C, it is shownthat Zo# and Zo/# are respectively yielded by the chain filters shown in Figs. 3 and 4, a finitenumber of sections being taken as a sufficient approximation to the infinite chain in each case. The impedances a, b, are constructed by connecting a filter in the form shown in Fig. 3 inparallel with a sufficiently large number of elements each composed of a filter as shown in Fig. 3 together with a filter as shown in Fig. 4, the dimensions of each filter being different and being calculated according to a formula given in the Specification. Specification 236,189 is referred to.
Patent GB-419000-A (GB)
Title: Improvements in cloches for use in horticulture
IPC: A01G13/04
Filed: 1933-05-05
Abstract: 419,000. Shelters for plants. CARRINGTON, H. B., c/o Battle Steel Window Co., Battle, Sussex. May 5, 1933, No. 13191. [Class 20 (i).] A cloche comprises a wire framing in the form of a pyramid, the glass being held in place on the framing by soft - metal strips 5 bent around the framing members 2 and along the faces of the glass 6. The upper end is closed by a cap 7 and screw 8 and, to ventilate the cloche, one face comes short of the top, leaving a space 6<1>, and the base edges of the glass sheets are curved at 10 to form openings.
Patent GB-312349-A (GB)
Title: Improvements in the manufacture of articles hardened by nitrogenisation
IPC: C23C8/00
Filed: 1929-04-29
Abstract: 312,349. Krupp Akt.-Ges., F. May 25, 1928, [Convention date]. Cementation. - Nitrogenized steel articles requiring high resistance to stresses produced by high pressure or impact are made from steel free from aluminium and containing 0.25-1 per cent of carbon, 0.2-1 per cent of vanadium or molybdenum or both, and 1.5-5 per cent of one or more of up to 1 per cent of silicon, up to 1 per cent of manganese, and up to 4 per cent of chromium. The steels are nitrogenized at 450-620‹ C., preferably about 500‹ C., for about 70 hours.. Specifications 126,289, [Class 82 (i), Metals, Extracting &c.]; 174,580, 243,613; 254,762 and 272,182, [both in Class 82 (i), Metals, Extracting &c.], are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers also to a steel containing 2 per cent of carbon, 12 per cent of chromium and 0.8 per cent of tungsten. This subject-matter does not appear in the Specification as accepted.
Patent GB-531469-A (GB)
Title: Improvements in or relating to the manufacture of cellular masses suitable for building purposes
IPC: C04B28/14
Filed: 1939-05-03
Abstract: 531,469. Building materials. LEFEBURE, V., SCOTT, K. T. B., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 3, 1939, No. 13247. [Class 70] Cellular material suitable for building blocks is made from a cement consisting of blast furnace slag, more than 10 per cent. of calcium sulphate and not more than 15 per cent. of a lime-containing or lime-producing exciter such as Portland cement clinker or lime, the cellular structure being obtained in known manner by incorporating preformed foam with the wet mix or by including gas-producing agents in the mix. Fillers, such as asbestos fibre, wood, cork or granulated slag, may be added. Examples are given using saponin as foaming agent, but gasproducing agents such as aluminium or zinc powder or alkaline solutions of peroxides may also be used. Specifications 306,444, [Class 70], 513,897 and 513,901 are referred to.
Patent GB-132648-A (GB)
IPC: B60B15/06
Abstract: 132,648. Dunlop Rubber Co., and Macbeth, C. Oct. 10, 1918. Slipping preventing attachments to wheels.-Wheels for tractors are provided with treads comprising a series of blocks, studs, &c. C and adjustable spuds F adapted to be retained in an inoperative position for ordinary road use and to be adjusted to, and retained in, operative position projecting outwards beyond the blocks for use on fields or soft grounds. The blocks C and their attachment to the wheel are as described in Specification 118,149. The spuds F are pivotally mounted between lugs B<2>, B<3> on the metal bases B of the blocks, and are allowed a certain amount of lateral movement to permit snugs F<2> on the spuds to engage one or other of two perpendicular slots B', B<5> in the lug B' corresponding to the upright or recumbent position of the spud, which is locked in either position by tightening up the bolt E. In a modification, the spuds may have inwardly projecting arms engaging a ring rotatably mounted on the whole, so that all the spuds may be simultaneously adjusted.
Patent GB-1415908-A (GB)
Title: On-off fire sprinkler
IPC: A62C37/08
Filed: 1973-03-20
Abstract: 1415908 Automatic sprinkler E J POITRAS 20 March 1973 [3 April 1972] 13382/73 Heading ASA  A fire sprinkler comprises a valve body having a valve seat disposed in the flow passage between inlet and outlet openings, and a valve head movable relative to the seat between open and closed positions by either a primary actuator responsive to a first predetermined condition associated with the generation of combustion products or an auxiliary actuator responsive to a second predetermined condition similarly associated. The primary actuator may reclose the valve when the first condition no longer prevails, but the auxiliary actuator acts permanently, e.g. in response to a higher ambient temperature. In the Figures valve body 2 defines inlet 3, outlet 4 and flow passage 12 therebetween. Valve head 16 is movable in bore 15 adjoining passage 12 and is urged by spring 9 against seat 13. Central recess 18 in head 16 defines with the unoccupied part of 15 and communicating bore 21 a pilot volume 19. Orifices 23 through head 16 provide limited communication between passage 12 and pilot volume 19. Bore 21 houses primary actuator 31 that vents volume 19 at 32 in response to the first predetermined condition, and comprises ball valve 33 biassed by spring 35 to close opening 34, and thermally responsive actuator 37 acting on piston 38. 37 may contain a wax which melts and increases in volume on a given temperature rise. Auxiliary actuator 41 comprises cup-shaped sealing plug 42 and oppositely oriented cupshaped seal 43 closing tube 40 in bore 21. Side wall 45 of 42 is sealed to the inside of 40 by eutectic material 46, e.g. a metal alloy that fuses at a temperature higher than that required to melt the wax in 37. End wall 44 of 42 abuts end wall 47 of 43, and side wall 48 of 43 engages the inner surface of 40. When mounted and ready for use the line pressure in pilot volume 19 retains valve head 16 on seat 13. However, on a predetermined ambient temperature rise the wax in actuator 37 melts, opening ball valve 33 and thence the main valve. If the ambient temperature then drops such that the wax resolidifies the valves reclose. Should the primary actuator fail, auxiliary actuator 41 opens the valve when the ambient temperature rises to the melting temperature of eutectic material 46.
Patent GB-130487-A (GB)
Title: Improvements in Rollers and Tractors of Velocipede Type.
Inventor: ROBINSON ARTHUR SAMUEL FRANCIS
IPC: B62K3/00
Filed: 1918-08-17
Abstract: 130,487. Robinson, A. S. F. Aug. 17, 1918. Saddle supports; handle-bars. - In a roller adapted to be propelled by pedalling-gear, as described in Specifications 10852/09 and 26937/09, [both in Class 136 (ii), Velocipede &c. driving mechanism], the steering-shaft o is provided with handles 9 fixed to the ends of cranked parts 10 adjustably mounted in the ends of a bifurcated member 11 terminating in a sleeve 11<a> secured to the shaft o. The shaft o also carries a circular plate, against which a brake block may be pressed by a hand-operated screw. The saddle is mounted on a pin 20 carried by an L-shaped bar 21 adjust. able in guides 24. A back-rest 23 is carried by a bar 22 secured to the bar 21, and back handles 28 are secured to brackets 27 which are slotted to carry the uprights for a canopy.
Patent GB-1119506-A (GB)
Title: Safety razor blades
IPC: B26B21/56
Filed: 1966-03-26
Abstract: 1,119,506. Razor blades. H. C. MARKS. 23 June, 1967 [26 March, 1966], No. 13454/66. Heading B4B. A safety razor blade 1 having four shaving edges comprises a slit 2 at each corner of the blade and mounting apertures 3 connected to a central aperture 4.
Patent GB-849979-A (GB)
Title: Improvements relating to methods of and apparatus for bringing liquids into contact with granular materials
Inventor: SOLT GEORGE STEFAN
IPC: B01J47/10
Filed: 1957-04-26
Abstract: 849,979. Ion exchange treatment of water &c. PERMUTIT CO. Ltd. April 21, 1958 [April 26, 1957], No. 13472/57. Class 46. Apparatus for treating liquid with granular material or vice versa, as in the demineralization of water by ion-exchange, comprises, Fig. 5, a vertical cylindrical container 8 having an inlet 12 and outlet 18 for the water and at least one horizontal screen 11 separating beds 9 and 10 of cation- and anion-exchange material the screen having strainer orifices 2 and 3 which allow water to pass downwardly and upwardly through the screen whilst blocking the passage of ion-exchange material. The orifices 3 are provided with riser tubes 4 whose open upper ends are in a plane above the level of outlet 22. Strainer orifices are preferably in the form Fig. 4, of hollow cylindrical buttons open at one end only and having in their cylindrical walls narrow slits 5 which widen inwardly to provide wedgeshaped elements 6 which, when the spaces therebetween are filled with granular ionexchange material, allow passage of water only from the exterior to the interior of the cylinders. In operation water is passed into bed 9 from pipe 12 and a screen 13 similar to screen 11 and is passed thence through buttons 3 and riser tubes 4 through bed 10 and screen 16 to outlet 18. Whilst ion-exchange continues, spent ionexchange material can be removed from beds 9 and 10 by opening valves 19 and 21 and the material is passed to vessels 23 and 24 for regeneration and washing. During this operation the spaces between tops of riser tubes 4 and 15 and outlets 22 and 19 are free of ion-exchange material and contain only water. When the desired quantity of spent material has been removed valves 19, 21, 25 and 28 are closed and suction is applied at 27, valve 29 being opened. Water occupying the spaces at the bottom of beds 9 and 10 is sucked down through buttons 32 and 2 and the two beds are moved down bodily as a whole, fresh anion-exchange material from vessel 24 refilling the space at the top of bed 10. Valve 30 is then opened and cation-exchange material is sucked from vessel 23 to fill the space at the top of bed 9. In a modification, not shown, two additional beds of ion-exchange material are provided such that the four beds alternate in cation and anionexchange.
Patent GB-219128-A (GB)
Title: Improvements in machines for washing wool or for performing like operations
IPC: D01B3/08
Filed: 1923-05-22
Abstract: 219,128. Kay, W. R. May 22, 1923. Passing loose fibrous materials through liquids. - Perforated pipes a, a<1> for the introduction of air, steam or liquid are arranged both below the perforated base b of the trough A of a wool-washing or like machine, and behind the perforated side walls c; the air &c. projected towards the perforations prevents the choking-up of these and ensures the free passage of the particles of dirt to the collecting trough B in the base of the machine. The necessary jets of liquid may be obtained by rotary longitudinal blades or spiral propellers arranged within the pipes a, a<1>.
Patent GB-746566-A (GB)
Title: Improvements relating to semi-conductive compositions
IPC: H01B1/08
Filed: 1954-05-10
Abstract: 746,566. Semi-conductor materials. GENERAL MOTORS CORPORATION. May 10, 1954 [May 27, 1953], No. 13503/54. Class 37. A semi-conductor composition comprises a calcined mixture of titanium dioxide, tin dioxide, and tantalum pentoxide or vanadium pentoxide. In addition, materials may be added which reduce the voltage coefficient of resistivity, such as molybdenum trioxide and/or tungsten trioxide, or which reduce the temperature coefficient, such as the ceramic materials tabular corundum, magnesia, nullite zircon or chrome oxide. One example consists of 60 parts of TiO 2 , 20 parts of SnO 2 , 10 parts of Ta 2 O 6,  4 parts of MoO 3  and 40 parts of Al 2 O 3 , which was calcined at 1400‹ C. in a slightly oxidizing atmosphere ; alternatively a reducing atmosphere could be used to modify the resistivity. The material may be used as a spark plug sealing resistor, or in a low-tension creep-gap spark plug.
Patent GB-636852-A (GB)
Title: Improvements in or relating to glazing bar assemblies
IPC: E04D3/08
Filed: 1948-05-20
Abstract: 636,852. Glazing roofs. WILLIAMS & WILLIAMS, Ltd., and MADDOX, A. M. May 20, 1948, No. 13696. [Class 20 (iii)] In a glazing-bar the web A<SP>1</SP> which extends between adjacent panes (supported on the flanges B) has a continuous longitudinal groove E in its top. Ribs F are provided along the sides of the groove, those along one side being staggered with respect to those along the other whereby the recesses between the ribs are engaged by the threads of the screws which pass through the capping and hold the latter to the upper faces of the panes. The amount of the stagger is equal to half the pitch of the screws.
Patent GB-996685-A (GB)
Title: Shears and similar tools
IPC: B26B13/16
Filed: 1964-04-02
Abstract: 996,685. Hand shears. MAX - PLANCK - GESELLSCHAFT ZUR FORDERUNG DER WESENSCHAFTEN E.U. April 2, 1964 [April 3, 1963], No. 13746/64. Heading B4B. Shears comprise a grip 8 which is rotatable about the axis of handle arm 5 against the action of a coil spring 9 from the open position of the shears, Fig. 2, to the closed position thereof, Fig. 4. Specification 861,417 is referred to.
Patent GB-968839-A (GB)
Title: Improvements in and relating to electronic apparatus incorporating semiconductors
Inventor: WALTER GEORGE OSCAR
IPC: G05F1/573
Filed: 1960-04-20
Abstract: 968,839. Automatic voltage and current control. A. P. T. ELECTRONIC INDUSTRIES Ltd. July 20, 1961 [April 20, 1960], Heading G3R. [Also in Division H3] An electrical apparatus including a semiconductor device, incorporates an arrangement for protecting said device against overload whereby the current flow in the device is controlled in accordance with a voltage having a component dependent on the current through the device a component dependent on the voltage across the device. As shown, a series regulating transistor VT1 is controlled, so as to maintain the voltage across a load RL constant, through transistors VT4, VT5, connected as a compound emitter-follower or super-alpha pair, by transistors VT2, VT3 having a common emitter resistor R3 and biased, respectively, by a reference voltage from a zener diode 2D1 and voltage proportionate to the voltage across the load RL from a tapping on a potential divider R1, R2, RV1. The transistor VT1 is protected from overload by being biased to cut-off by a voltage applied through a diode D4 to the transistor VT4 from an amplifier comprising transistors VT6, VT7. The base to emitter bias of the transistor VT6 is dependent on the difference between a constant voltage e 1 , at a tapping of a voltage divider R10, R11, RV2 connected across a Zener diode ZD2, and a voltage formed by the summation of the voltage drop across a resistor R7 carrying the load current and the voltage drop across a resistor R9 forming part of a shunt R8, R9 across the transistor. It is stated that resistors R7, R8, R9 may comprise non- linear resistors and one or more may be temperature sensitive to increase current limitation at high ambient temperatures.
Patent GB-478733-A (GB)
Title: Improvements in methods of applying luminescent substances to the surface of a vitreous body, other than the envelope of a luminous electric discharge lamp or tube
IPC: H01J9/22
Filed: 1936-04-09
Abstract: 478,733. Fluorescent screens. GERMER, E. April 9, 1936, No. 13859 /37. Void. Convention date, April 11, 1935. Divided out of 468,531. Drawings to Specification. [Class 98 (i)] In forming a thin layer of luminescent material on the surface of a vitreous support, a gas pressure considerably exceeding atmospheric is applied at a temperature at which the support is soft. The subject-matter is the same as that described in Specification 468,531. Specification 421,955 also is referred to.
Patent GB-1356780-A (GB)
Title: Bag filling apparatus
IPC: B65B1/28
Filed: 1973-03-22
Abstract: 1356780 Bag-filling apparatus HAVER & BOECKER 22 March 1973 [23 March 1972] 13885/73 Addition to 1315650 Heading B8C The bag-filling apparatus of the parent Specification 1,315,650 is improved by the provision of two presser means 10, 11 for the removal of air after filling, each being pivotable about a stationary horizontal axis 13 and a second displaceable horizontal axis 14 about which the presser bar 12 is freely pivotable under gravity. Abutment members 26, 27 limit the movement of bar 12 by engaging a bar 28 secured to side plates 29 which are pivotable about axis 14 by air cylinder 30. Axis 14 is mounted on side plates 18 pivotable about axis 13 by means of a side arm 19 connected to air cylinder 22. The filled bag moving from the filling station actuates a sensor which causes bars 12 to swing open, and further presser bars at a closure station to pivot on to the bag.
Patent GB-769546-A (GB)
Title: Improvements in offset printing
IPC: B41F7/04
Filed: 1955-05-13
Abstract: 769,546. Printing machines. LEVEY CO., Inc., F. H. May 13, 1955 [Nov. 24, 1954], No. 13901/55. Class 100(2) In a web-fed offset rotary press wherein an impression cylinder 1 and equal-sized blanket and plate cylinders 2, 3 all have substantially continuous smooth peripheries and are adapted to print two or more pages with intervening margins within one of which the blanket seam is arranged to fall, the angle between the axial planes AB and BC is made substantially equal to 360 degrees divided by the number of margins and multiplied by any integer up to one less than the number of margins; thus the vibration caused by the blanket clamp 7 in passing the plate cylinder 3 will come at a time when a margin of the image on the blanket cylinder is passing the impression cylinder 1, whereby blurring of the image (particularly objectionable in multi-colour work) will be avoided. Where three pages are arranged around the cylinder 3 the angle ABC will be 120 degrees, but for six pages other alternatives are 180 degrees and 60 degrees, the position of the cylinder 3 in these cases being shown at 11 and 13; in the latter case a smaller impression cylinder 1<SP>1</SP> will be required. In Fig. 2 (not shown) positions for 2, 4 and 8 pages are given and reference is also made to possible positions for 12 pages. When, as usually, the irregularity of the blanket at the seam is of less width than the margin width, slight deviation from the precise calculated angles is permissible.
Patent GB-680983-A (GB)
Title: Improvements in and relating to electrolytic devices
IPC: H01G9/048
Filed: 1951-06-12
Abstract: 680,983. Coating with metals. BRENNAN, J. B. June 12, 1951, No. 13909/51. Class 82(ii) [Also in Group XXXVI] The electrode of an electrolytic condenser is made by coating both sides of a porous base strip 11, Fig. 1, e.g. of paper with porous metallic material 12, 13, 14 which extends beyond the edge of the strip 11 and is bonded to the metal on the other side of the strip. The metal may be applied by spraying, or by depositing powder on a strip, Fig. 8, spread smoothly by a doctor knife 53 and sintered in an oven 55, the paper strip being cooled by roll 54 to resist combustion; the other side is similarly treated. The strip so produced may be folded as in Fig. 7, cut longitudinally as in Fig. 6, or the strip may be cut along each edge by knives 28, Fig. 5, and one layer peeled off to form two electrodes. In another modification, the edges of the strip are trimmed off, and the strip split at the paper to form two electrodes.
Patent GB-203296-A (GB)
Title: Improvements in grinding apparatus
IPC: B24B19/00
Filed: 1923-05-26
Abstract: 203,296. Western Electric Co., Ltd., (Assignees of Kochendorfer, F. S., and Schulz, A. E.). Aug. 31, 1922, [Convention date]. Dressing.-The work support 20, Fig. 1, of a grinding machine is replaced by a bar 68, Fig. 3, adapted to rest in bearings 21. The bar carries a dressing tool having a diamond 64, set by means of a knob 69 so as to contact with a gauge 60 which has previously been set by a screw 63 to contact with the surface of the worksupport. The bar 68 is now traversed in its bearings so as to carry the diamond across the face of a grinding wheel 15, which is mounted in a fixed bracket, a slide 23 carrying the bearings and the gauge being fed along its base 18, by the rotation of a rod 25 threaded into the base, until the wheel 15 has been trued.