baber/WOPTO huggingface dataset:
Patent GB-643590-A (GB)
Title: Improvements in optical scale-reading systems
IPC: F21V8/00
Filed: 1948-02-04
Abstract: 643,590. Indicating-apparatus. HILGER & WATTS, Ltd., GODFREY, C. J., and BATY, J. A. Feb. 4, 1948, No. 3241. [Class 106 (iv)] [Also in Groups XX and XXII] To allow differential thermal expansion longitudinally of a scale and its frame, the scale is divided into several portions each attached to the frame by a key at one point on each of its longitudinal edges transversely opposite the other so as to provide a space between each portion. As shown in Fig. 1, the portions a of glass are held in a steel frame b by keys d of cement or metal, the portions being otherwise free in the frame. The scale may consist of transparent markings on an opaque ground, and for reading, an image of the scale h, Fig. 4, is projected on to a screen j against which is a vernier k consisting of a transparent plate having indentations o forming the vernier scale and illuminated by a lamp m so that the vernier markings appear as bright lines adjacent the projected image. In the arrangement shown in Fig. 7 the edgeilluminated scale q has divisions each onetenth of the size of the image of a division of the scale h projected on the screen, measurement being effected by moving the scale until one graduation coincides with the projected image s of one of the scale division of the scale h, the amount of movement being indicated on an additional scale shown below. Both main and vernier scales may be projected on to a screen or may be viewed directly, and the main scale may be edge-illuminated.
Patent GB-899643-A (GB)
Title: Improvements in or relating to apparatus for furnishing electrical signals for torque measurement
IPC: G01L3/10
Filed: 1959-01-29
Abstract: 899,643. Measuring electrically. MESSENJASCHIN G.A. Jan. 29, 1959 [Feb. 5, 1958; Jan. 7, 1959], No. 3278/59. Class 40 (1). In torque measuring apparatus in which two A.C. generators are spaced apart along a shaft, each generator comprises a rotor fixedly mounted on the shaft and having a ring of teeth coaxial with the shaft, each tooth extending parallel to the shaft axis, and a magnetic stator, one pole of which is disposed radially outward and another pole of which is disposed radially inward with respect to the ring of teeth, the A.C. voltages produced in pick-up windings on the stators being used in known manner to determine the torque on the shaft. Fig. 6 shows one tooth 1a of a ring of teeth disposed around the periphery of a rotor 1, and a stator 2 comprising polepieces 5, which are narrow in the direction parallel to the rotor axis, D.C. energized windings L2 (unless the stator is a permanent magnet) and output windings L1. The stator is formed in two pieces connected by a bolt 4 which has a right-hand thread on its upper half and a left-hand thread on its lower half, so that rotation of the bolt results in a common increase or decrease in the air-gaps S1 S2. In a modification (not shown), the stator is made in one piece having a single energized winding L2; the outputs of windings L1 are added, thus compensating for any variation in the values of S1, S2. The stators may be angularly adjustable about the rotor axes for zero-setting. In Fig. 4, the torsional effect of a torque on a main shaft 9 is amplified for measuring purposes by mounting the generators 10 on a second shaft 8 parallel to the main shaft and coupled to it by gear-wheels 6 on the main shaft meshing with pinions 7 on the second shaft. In a modification, the pinions 7 constitute the rotors of the generators and are provided with rings of teeth which co-operate with the stators in addition to their radial gear teeth.
Patent GB-721528-A (GB)
Title: Improvements in or relating to combined pressure fluid distributor and pressure regulating valve devices
IPC: F15B9/16
Filed: 1948-01-21
Abstract: 721,528. Hydraulic machines; liquid pressure engines. OLAER MARINE. Jan. 21, 1948 [Jan. 22, 1947], No. 3301/53. Divided out of 721,431. Class 69 (2). A combined hydraulic distributer and regulating valve for co-operation with a single source of constant pressure P comprises a distributer valve 117 deriving from the source a first controlled pressure, variable in accordance with its position and a pressure regulating valve 129 deriving from the source a second controlled pressure, variable in accordance with its position, the position of the pressure regulating valve 129 being adjustable solely by the first controlled pressure so that variation of the first controlled pressure results in an opposite variation of the second controlled pressure. The valve 117 comprises differential pistons, the outer end 118 being subjected to the pressure P, the other outer end being supplied by a pipe 116 with pressure liquid under the control of a valve 111; the valve 117 controls a pressure duct 124 and an exhaust line 141, the first controlled pressure being applied to one side of a motor M by a pipe 125 and to one end 127 of the valve 129 which also comprises differential pistons. The valve 129 is subjected to the pressure of a spring 130 and controls an inlet duct 138 and an exhaust line 133, the second controlled pressure being applied to the other end of the motor M by a pipe 131. The spring 130 is arranged to balance the sum of the two controlled pressures acting on the differential areas of the valve 129. The valve 111 controls the speed and direction of the motor M by controlling the difference between the two pressures applied to opposite side of the motor. Specification 721,431 is referred to.
Patent GB-735248-A (GB)
Title: Improvements in mercury-in-glass water level indicators and controls
Inventor: SPANNER EDWARD FRANK
IPC: G01F23/16
Filed: 1953-02-05
Abstract: 735,248. Indicating liquid levels. SPANNER BOILERS, Ltd., GORDON & CO., Ltd., J., ARKELL, H. W., and GRIMSTON, W. L. Feb. 5, 1953, No. 3322/53. Class 123 (1). A water level indicator consists of a glass U-tube having an indicating limb Cl of uniform cross-section and a back limb C2 having its upper end expanded into a tube D of larger cross-section, the limb C1, being connected by a tube T to a datum level vessel B located at the intended maximum level M, M in the water container A whilst the top of tube D is connected to the bottom of container A by a tube T2. The instrument may be located at or a considerable distance, for example 100 feet, below the bottom of the container. To set the indicator, mercury is poured into the U-tube so that it stands at a level p in C and D and water is filled into the remainder of the system to level M, M in A and B. Any variation in level in A produces a proportional variation in the mercury level in C1, the ratio of movement of the mercury to that of the water being made equal to the ratio of the specific gravities of water and mercury, that is 1 to 13.6, by appropriately dimensioning the tubes C1 and D. The instrument may be used to indicate the level in a pressure vessel, for example a steam drum, by connecting the upper parts of the pressure vessel and of vessel B. To facilitate reading, a short length of a brightly coloured liquid may be interposed between the water and mercury in limb C1 and contacts may be provided in the limb and included in electrical alarm or control circuits.
Patent GB-556709-A (GB)
Title: A new or improved process for utilising the acid sludge resulting from the refining of mineral oils and coal tar derivatives
IPC: B01J20/12
Filed: 1942-03-13
Abstract: 556,709. Purifying clay. MOORE, H., and KIND, F. March 13, 1942, No. 3328. [Classes 1 (ii) and 1 (iii)] Clay &c. for use in refining petroleum or fatty oils is "acid treated" by means of hot gaseous hydrochloric acid resulting from the action on sodium chloride of acid sludge recovered from petroleum refining processes in known manner by removing the upper layer of organic matter.
Patent GB-1294227-A (GB)
Title: Improvements in or relating to flexible tubing
Inventor: MOSS TREVOR FREDERICK
IPC: F16L11/115
Filed: 1970-01-23
Abstract: 1294227 Flexible pipes; pipe couplings T F MOSS 14 Jan 1971 [23 Jan 1970] 3410/70 Headings F2G and F2P A flexible pipe comprises a tube 1 surrounded by a helical metal coil spring 2 which is loosely encased within an outer sleeve 3 having an internal helical ridge 4 of the same pitch as the spring the ridge being interposed between the coils of the spring to restrict longitudinal movement of the spring. The portions of the sleeve between adjacent ridges are preferably of curved axial profile to facilitate bending of the pipe (Fig. 2, not shown). The pipe may be joined to a rigid end fitting 5 by shaping the end of the sleeve 6 to engage a nut 7 of the fitting, lock nut 8 being provided to compress a flange 9 of the sleeve against the nut 7. Alternatively (Fig. 3, not shown) the tube 1 and sleeve 3 are both drawn over an enlarged portion (11) of a spigot (10) of the fitting and are secured by a sleeve (13) around the narrower part of the spigot.
Patent GB-697634-A (GB)
Title: Improvements in or relating to circulating pumps for central heating plants
IPC: F04D15/00
Filed: 1951-02-13
Abstract: 697,634. Cooling electric motors. RUTSCHT, K., [trading as PUMPENBAU BRUGG K. RUTSCHI]. Feb. 13, 1951 [March 8, 1950], No. 3451/51. Class 35. [Also in Groups XIX and XXVI] The electric driving motor 13 of a circulating pump for a central heating plant is exposed through openings 6, 21 to the pumped hot water, the stator winding 17 being protected by a sealing sleeve 18. The mounting flange 14 of the motor may be integral with a diaphragm 22 forming part of the pump casing 1. A. window 24, which can alternatively be mounted on the easing 1, enables the operation and direction of rotation of the motor shaft to be seen.
Patent GB-451245-A (GB)
Title: Improvements relating to fuel injection systems for internal combustion engines
IPC: F02M21/00
Filed: 1935-02-02
Abstract: 451,245. Fuel pumps. BRYCE, Ltd., Kelvin works, Hackbridge, Surrey, and LAWSON, C. W., 80, Shrewsbury Lane, Woolwich, London. Feb. 2, 1935, No. 3486. [Class 102 (i)] A fuel feed pump for a fuel injection pump is actuated by the pressure of the fuel byepassed by the fuel injection pump and comprises a bucket 23 mounted in a cylinder 19 open to the fuel supply pipe 2. The adapter 18 is connected to the fuel injection pump. The fuel byepassed acts on the piston 30 and raises the bucket 23 allowing fuel to pass through the valve 27 to the chamber 33. The fuel is delivered from this chamber through the ports 15 and valve 16 by the spring 24. The stroke of the piston 30 is restricted by allowing the byepass fuel to flow through the ports 31 and 21 to the annular passage 20.
Patent GB-482917-A (GB)
Title: Improvements in selectors for telephone systems
IPC: H01H67/12
Filed: 1937-02-05
Abstract: 482,917. Automatic exchange switches. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 5, 1937, No. 3511. Convention date, Feb. 5, 1936. [Class 40 (iv)] In a two-motion switch using a bare-wire multiple as the terminal bank, an additional wiper set 41 is moved during the primary movement in the direction of the secondary movement of the main wipers by a pinion 23 on the same shaft as a pinion 12 which moves the main wiper carriage along the shaft 2 when the stepping magnet 8 is actuated. Secondary movement of the main wipers is given by magnet 13 which controls a driving pawl 14 engaging teeth formed on the cylindrical rack engaged by the primary driving pinions, and so rotates the sleeve portion 5 of the wiper carriage. Primary and secondary off-normal springs and last step springs are actuated respectively by a bar 45 and separately adjustable cam discs 52, 53. Release magnet 35 withdraws holding detents 16, 17 to enable a spring 21 and a spring (not shown) adjustably connected between pinion 23 and the framework, to restore the switch. The banks are formed by groups of wires passing through insulating plates.
Patent GB-1284996-A (GB)
Title: Improvements in milling cutters
Inventor: PITCHFORD FREDERICK JOHN LLEWE
IPC: B23D47/00
Filed: 1970-01-24
Abstract: 1284996 Milling head WILDT MELLOR BROMLEY Ltd 7 Jan 1971 [24 Jan 1970] 3525/70 Addition to 1175869 Heading B3K A tool head 1 comprises a milling saw 3 clamped on an arbor 4, a guide 8, comprising a cover ring 9 clamped to a backing ring 10, and opposed annular cheeks 11 on rings 9 and 10 disposed adjacent the roots of the cutting teeth 12, guide 8 being rotatably mounted so as to be movable towards or away from the workpiece 7, so that the saw is supported when milling deep or shallow grooves. Arbor 4 is adapted to float axially on a spindle 2 rotated by an electric motor, and head 1 is vertically and laterally movable relative to the workpiece. Guide 8 is rotated by a piston and cylinder 19 actuated by fluid pressure supplied from the hydraulic control circuit of the saw in such a way that the position taken up by the guide is related to the depth of cut selected. Guide 8 is cut away adjacent the cutting portion of the asw.
Patent GB-1487802-A (GB)
Title: Hydrostatic extrusion press
IPC: B21C23/00
Filed: 1975-01-28
Abstract: 1487802 Extrusion ASEA AB 28 Jan 1975 [29 Jan 1974] 3600/75 Heading B3P A hydrostatic extrusion press has a composite die which comprises a preforming portion 10 with a frusto-conical inlet portion 11 and a final-forming portion 12 mounted within a prestressed, force-absorbing support ring 16. The support ring 16 has a shorter axially length than the final forming die portion 12 so as to support it externally only in the forming region. A gap 23 between the final forming portion 12 and the die holder 7 prevents compressive stresses being applied in the clearance portion 15. In an alternative embodiment, Fig. 2 (not shown), the final forming portion (12) is supported axially on a ring (25) spaced by a gap (27) from a support ring (26) for the prestressed support ring (16).
Patent GB-1337875-A (GB)
Title: Control system for a liquid-piston slurry pump
IPC: F04B53/14
Filed: 1972-01-26
Abstract: 1337875 Reciprocating pumps TAMAGAWA KIKAI KINZOKU K K 26 Jan 1972 [24 June 1971]  3704/72 Heading F1A A liquid-piston slurry pump has a pumping chamber 11 containing a liquid-piston O of oil reciprocated by a piston 2, slurry S being pumped into and out of the chamber via valves 8, 7, the volume of the liquid-piston being controlled by sensors 16, 17, 18 connected to a controller 20, which, when the oil level rises to sensor 18, opens an oil supply valve 14, and, when it falls to sensor 16, opens an oil discharge valve 22. A sensor 19 detects air in the chamber, and operates controller 20 to open valve 22 to vent the air.
Patent GB-138704-A (GB)
Title: Improvements in pulley blocks and similar hoisting gear
IPC: F16D59/00
Filed: 1919-02-15
Abstract: 138,704. Wharton, W. Feb. 15, 1919. Brakes and retarding-apparatus for winding and paying-out apparatus.-In pulleyblocks provided with centrifugally-acting brakes for regulating the descent of the load, the brake levers d are pivotally mounted in a carrier a on which is mounted a ring f provided with projections f<2>. Springs g attached to the carrier and ring normally force the projections f<2> against the short arm of the brake levers, and so keep the brake surfaces d<5> out of contact with the fixed annulus e.
Patent GB-431322-A (GB)
Title: Machine for shredding wood pulp and similar materials to be used in the manufacture of paper
IPC: D21B1/06
Filed: 1935-02-06
Abstract: 431,322. Preparation of paper pulp. WARREN, J. J., Brownville, New York, U.S.A. Feb. 6, 1935, No. 3858. Convention date, Feb. 10, 1934. [Class 96] In a pulp shredding-machine, sheets of sulphite pulp &c. being fed towards the shredding-drum 20 are impaled on spikes 32 which hold the rear end of each sheet after it leaves the nip of the last pair of feeding rolls 16, 17, so that the entire pulp sheet is uniformly shredded. The sheets are fed along a table, comprising groups of narrow rotating rolls 12 spaced along their shafts by bars 14, and pass between the rollers 16, 17, the former having alternate saw-toothed discs and spiked discs and the latter alternate plain discs which press the sheet against the saw teeth of the roller 16, and discs with recesses to receive the spikes of the roller 16. The roller 17 is carried in spring- loaded arms 48 and is driven from the lower roller 16 by gearing including two idlers 41, 42, the arrangement allowing pulp sheets of different thicknesses to be accommodated. The shredding - drum 20 may rotate at 1000-1600 revs. per min., i.e. 40-80 times the peripheral speed of the feed rolls.
Patent GB-739632-A (GB)
Title: Improvements in or relating to piezo-electric elements
IPC: H03H9/17
Filed: 1954-02-09
Abstract: 739,632. Piezo-electric elements. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 9, 1954 [Feb. 12, 1953], No. 3863/54. Class 40 (8). A piezo-electric element comprises one or more electroded plates of polycrystalline piezoelectric material, e.g. barium titanate or zirconate, totally enclosed by an adhering layer of a thermally-hardening synthetic resin. The element shown comprises two electroded plates soldered together at 4. The adhering layer 6 is preferably less than 0.2 mm. thick and may be made of a mixture of urea- or melamineformaldehyde resins and alkyd resins together with an alcohol, e.g. butanol. Such a layer may be applied at a temperature of below 150‹C. The Specification states that polarizing fields of up to 60 kv/cm. may be applied without leakage to elements provided with layers according to the invention.
Patent GB-1335162-A (GB)
Title: Depolarization masses for dry batteries
IPC: H01M4/50
Filed: 1972-01-27
Abstract: 1335162 MnO 2  KNAPSACK AG 27 Jan 1972 [29 Jan 1971] 3868/72 Heading C1A [Also in Division H1] A depolarizer mass for a dry cell comprises artificial MnO 2  with a density between 0À8 and 1-4 kg/litres and with an ability for absorbing moisture between 40 and 90 gms. of H 2 O per 100 gms. of MnO 2 . The artificial MnO 2  is produced by the steps comprising mixing, in aqueous phase, a manganese (II) salt solution, hypochlorite and a compound producing an alkaline reaction; the quantities of the materials being that necessary to maintain a pH value higher than 8, predrying the product, washing the product with a non-reducing acid at a pH value of less than 2, removing the wash acid and drying the MnO 2  at between 100 and 350‹ C.
Patent GB-987534-A (GB)
Title: Improvements in and relating to fasteners particularly for securing rods in panel apertures
IPC: F16B9/02
Filed: 1963-01-30
Abstract: 987,534. Rivets; screw-sockets; securing threadless bolts. A. RAYMOND. Jan. 30, 1963 [Jan. 30, 1962], No. 3888/63. Heading F2H. [Also in Divisions B4 and E2] A rod, e.g. for attaching electric cables, is secured to a metal panel by insertion as a force fit, or screwing if the rod end is threaded, Figs. 4, 5 (not shown), into a resilient synthetic resin socket inserted in a hole in the panel and having an enlarged head 3 with a bore 7 extending into a cylindrical body 1 and tapering into a slot 2 dividing the headless end into two limbs 1a, 1b which are spread by the inserted bolt end. A boss on the head, with four extensions 6, Fig. 2, coacts with an end of a sleeve of a tool (see Division B4) so that the fastener is held from rotation while the rod is screwed into it by the tool.
Patent GB-294853-A (GB)
Title: Improvements in umbrella mosquito tents
IPC: E04H15/28
Filed: 1928-02-08
Abstract: 294,853. Kius, H. F. A. Oct. 10, 1927, [Convention date]. No Patent granted (Sealing fee not paid). Tents. - The ribs a of an umbrella, tent are jointed to a ring, b on a tubular member d and the struts g are jointed to a ring h on a second tubular member i, as shown in Fig. 4, and the tent is adapted to be opened by the slidable engagement of the two tubular members d, i, no umbrella stick being employed. In the open position of the tent, the struts are forced beyond the extreme spreading position. When the tube i is engaged with the tube d by means of the knob k, the struts g turn from a radial to a tangential position relatively to the ring h. The tent may be supported directly on the ends of the ribs, or such ribs may rest on uprights, such as the ends of a bed, or the tube d may be suspended from the celling. Weights m, Fig. 5, may be disposed on the lower hanging portion of the cover c, and if desired this hanging portion n may be separate and detachably secured to the main cover at o. At the ends of the ribs, the cover, which may be of tulle material, is strengthened.
Patent GB-925229-A (GB)
Title: A control device for switching and regulating arrangements
IPC: G05B19/16
Filed: 1960-02-04
Abstract: 925,229. Stage lighting systems. SIEMENSSCHUCKERTWERKE A.G. Feb. 4, 1960 [Feb. 6, 1959 ; May 29, 1959], No. 4022/60. Classes 38 (4) and 38 (6). [Also in Group XXXVIII] A stage lighting installation controlling a sequence of operations each involving control of a plurality of circuits comprises a magnetic tape on which a plurality of longitudinally disposed signals are simultaneously recorded along the length of the tape. The reading and/or recording heads 6 may be arranged longitudinally, or circumferentially around a drum. The tape is driven at one speed for each operation, and at a higher speed during the transition from one operation to the next, the heads being muted during the transition. By-passing of one or more operations may be arranged. Several tracks may be provided on the tape in parallel. The signals may be of differing frequencies superimposed. The arrangement may be used for setting up a series of stage lighting displays, and by variable frequency signals the lighting may be varied during a display.
Patent GB-808357-A (GB)
Title: Improvements in ornamental stitch sewing machines
IPC: B65B27/08
Filed: 1955-11-24
Abstract: 808,357. Sewing machines. SINGER MANUFACTURING CO. Nov. 24, 1955 [Nov. 29, 1954], No. 4204/58. Divided out of 808,351. Drawings to Specification. Class 112 The subject-matter of this Specification is described in Specification 808,351 but the claims differ.
Patent GB-911829-A (GB)
Title: Improvements in variable resistors
IPC: H01C10/40
Filed: 1960-02-05
Abstract: 911,829. Variable resistors; direct connections between conductors. BOURNS Inc. Feb. 5, 1960 [Sept. 29, 1959], No. 4215/60. Classes 37 and 38 (1). The terminal connection to the flat resistance element of a variable resistor, along which a wiper contact is longitudinally movable, consists of a clip extending across one side of the element and held flat against that side by a spring which makes electrical connection at two longitudinally spaced points on the other side of the element. Terminal clip 50, Fig. 4, has a spring portion 53 provided with two projections 54, Fig. 2, which contact a highlyconductive film, of silver paint for example, covering the exposed surface of projections 47 which extend from each end of the resistance element 20 of a variable resistor which is mounted in the two housing sections 11 and 12 of Figs. 2 and 1. The slider 23, Fig. 3, consists of a dielectric plastic block 60, with a threaded channel 61 for receiving the threads of the lead screw 22, and a ledge 62 which carries a V-shaped sheet metal contact member 21, of which each leg is bifurcated to form two spring contact fingers 65 wiping over resistance element 20 and conductive strip 21. The leadscrew threads can slip over the channel threads when the slider reaches the end of its travel. Parts 11 and 12 are preferably moulded of dielectric plastic, the resistance element 20 may be either wire-wound, a flat strip of resistive material, a metal film, or a carbon composition on a plastic or ceramic base.