baber/WOPTO huggingface dataset:
Patent GB-230270-A (GB)
Title: Improvements relating to the printing of photographic films
IPC: G03B27/16
Filed: 1924-03-10
Abstract: 230,270. Lawley, H. V. March 10, 1924. Printing-apparatus. - Apparatus for printing from negatives, such as kinematograph films, having sections of variable density, comprises contact devices, one for each change of light, operable through circuit connections from devices controlled by the different sections of the negative, each contact device consisting of a disc 4 having a contact segment 19 extending circumferentially for a considerable distance on the disc, and an electromagnetically controlled detent 26 which normally retains the disc 4 against rotation and releases it to allow the segment 19 to cooperate with a contact 20 in circuit with a switch in an associated circuit of the printing lamp. In the form shown, for ten light intensities, the discs 4 are frictionally driven from a shaft 3 continuously rotated by a motor 2 through gearing in a casing 15. Springs 16, adjusted by nuts 17, press the discs against flanges 4<a> on fhe shaft 3. A detent 26 is released to allow rotation of the corresponding disc 4 by the attraction, against action of spring 33, of an armature 29 by the energization of an electromagnet 37 by a contact on the film negative connecting a key contact e<2>, Fig 4, in the gate with one of light-intensity contacts 1 - - 10, thus closing a circuit through lead 42, battery 42<a>, leads 43, 44, 45, shaft 3, disc 4, detent 26, armature 29, magnet 37 and lead 38. On rotation of the disc 4, a contact 19, 20 is closed causing another circuit from the battery 42<a> through leads 43, 44, 45, shaft 3, disc 4, contact 19, 20, lead 22, electromagnet 23 and lead 47 to close the corresponding switch device in the circuit of the printing lamp x. The magnet 23 is thus energized and attracts a pivoted armature 24 against the tension of a spring 40, closing a spring contact 24<a> for the required portion of the lamp-resistance 25<a>, thus giving a light of the required intensity. When the disc 4 has completed a rotation it is again arrested by the detent 26 but the contact 24a is still held in operation until release of another disc 4 by the retention of the armature 24 in the attracted position by a rocking catch 41 released by electromagnets 41<a> as described in Specification 180,189. The contact devices may be manually-operated by keys 6 attached to the armature 29, and together with the resistance 25a, and a hand-controlled sliding resistance 25<b>, are contained in a casing 8. The switch devices occupy a glass case 13 on the top wall 9 of the casing 8. The speed of the driving shaft 3 and the length of the contact segment 19 may be arranged to allow of any printing speed. Specifications 166,340 and 215,077 are referred to.
Patent GB-1029491-A (GB)
Title: Servo system with a safeguard against hunting
IPC: G05B5/01
Filed: 1964-02-13
Abstract: 1,029,491. Automatic control. VAN DER HEEM N.V. Feb 13,1964 [Feb.14, 1963], No. 6170/64. Heading G3R In a system in which a servomotor adjusts the position of a member, a control signal and a negative feedback signal dependent on the position of the member are applied to a servo-amplifier the gain of which is automatically reduced by means responding to hunting oscillations of the signal applied to the servomotor or of the negative feedback signal. As described, a servomotor 4, Fig. 1 (not shown), is controlled through a transistor amplifier 3 by the difference between a control signal U in  and a feedback signal derived from a signal generator 2 representative of the position of servomotor 4. The signal applied to servomotor 4 is also applied to a filter 6 which stabilizes the system by permitting hunting frequency components to reduce the gain of amplifier 3 through a rectifier 5. Filter 6 may be a differentiating RC network and may, alternatively, be associated with the output of signal generator 2. Application to A.C.and D.C . motors is described.
Patent GB-512323-A (GB)
Title: Improvements in or relating to the treatment of water
IPC: B01J39/24
Filed: 1938-02-26
Abstract: 512,323. Softening water. PERMUTIT CO., Ltd. Feb. 26, 1938, No. 6171. Convention date, April 20, 1937. [Class 46] [Also in Group III] Cations are removed from or exchanged in water by bringing the water into contact with a substance obtained from acid mud or similar waste material by heating the waste material, at a temperature high enough to cause evolution of sulphur dioxide, until a product is obtained possessing cation-exchange or cation-removing powers, and stopping heating before coking of the organic constituents takes place. The heating may be effected at 90-250‹C. The concentration of sulphuric acid in the initial material should preferably be 70 per cent or more and if insufficient sulphuric acid is present, sulphuric acid, fuming sulphuric acid, chlorsulphonic acid, sulphuric anhydride, phosphoric anhydride or mixtures thereof may be added before or during the heating operation. If the material contains considerable sulphuric acid, carbonaceous materials such as wood, straw, cork, charcoal, peat, brown or other coal, anthracite, partially coked coal, pitch, tar, sugar, dextrine, organic acids and their salts, fats and their acids, thickened sulphite liquor and soap may be added to the material before or during the heating operation. The heating is preferably effected in the presence of one or more oxidising agents, and one or more oxidation accelerators may also be present. Suitable oxidising agents are concentrated nitric acid, chromic acid, and potassium, sodium and ammonium permanganates and persulphates. Suitable oxidation accelerators are salts of chromium, aluminium, manganese, cobalt, nickel and iron, preferably in the anhydrous state. An inactive and preferably absorptive carrier such as coke may be added to the material before, during or after heating. The process may be applied to the softening of water, the substances being regenerated in the usual way with regenerating liquids such as salt and acid solutions. Specification 489,338 is referred to.
Patent GB-575747-A (GB)
Title: Improvements relating to cathode ray bulbs
IPC: H01J9/24
Filed: 1944-04-04
Abstract: 575,747. Cathode-ray tubes. CHANCE BROS., Ltd., HAMPTON, W. M., and RAYMOND, N. J. B. April 4, 1944, Nos. 6271 and 15267. [Class 56] A curved screen for a cathode ray tube is formed by placing a flat disc a of glass of uniform thickness as a support b which conforms to the shape of the finished screen. The disc is heated sufficiently to cause it to bend under its own weight and to take the shape of the support, which may be convex as in Fig. 1 or concave as in Fig. 2 and in the latter case the shaping may be expedited by applying suction to the support. The screen is subsequently fused to the open end of the main portion of the tube.
Patent GB-265404-A (GB)
Title: Improvements in and relating to boxes of cardboard and the like
IPC: B65D5/52
Filed: 1926-03-06
Abstract: 265,404. Stevenson, A. March 6, 1926. Container pivoted: in shell. - Relates to boxes of the, type comprising a frame and a container pivoted together, in which the frame can be swung clear of the open end of the container to give access to the contents of the latter. According to the invention the box, comprising a frame 6 and container 4 pivoted together at 5, can be closed by swinging the frame into the plane of the container so that the open end 8 contacts with a permanent closure strip on the side of the frame. An internal strip 10 is provided around the closure strip against which the end 8 abuts and so prevents the entry of dust &c. The end 8 of the container is cut away on three sides. The internal strip 10 extends over the sides of the frame a distance which permits the accommodation of the projecting side of the container.
Patent GB-892334-A (GB)
Title: Improvements in or relating to the manufacture of transposed multiple strip conductor
Inventor: HINDS RONALD
IPC: H01B13/02
Filed: 1958-02-27
Abstract: 892,334. Conductors. BRITISH INSULATED CALLENDER'S CABLES Ltd. Feb. 26, 1959 [Feb. 27, 1958], No. 6385/58. Class 36. A transposing head, for a transposed multiple strip conductor, comprises a closing die of substantially rectangular cross-section having two relatively reciprocable side walls, and two end walls each formed in part by a member moving with one side wall and in part by a member moving with the other side wall, rotary cams being provided at diagonally opposite corners of the die aperture to push diagonally opposite wires of a rectangular group laterally across the die as the group of wires enters it. The side walls may be formed by rolls 6 mounted on roll shafts, each roll shaft having keyed thereon a flange 8 forming one half of one end wall, the roll shaft also carrying a pivoted spring-loaded member 31 which is provided with a bevelled roller 37 forming half of the opposite end wall, the member 31 moving axially with the shaft but not rotating. The shafts are parallel but oppositely directed and are mounted in bearings in a frame 1. Each shaft may be moved axially by pressure of a screw 24 actuated by rotation of a pair of cams 20 and 21 translated through a crank 22. Each flange 8 has a cam surface 9 which, upon rotation of the associated roll shaft, bears against a conductor strip to push it over to the other side of the die opening, a space being provided for it by the aforesaid axial movement of the opposite roll shaft assembly which axially displaces one half of the conductor stack and is then returned by a helical spring situated within a hollow gear-wheel 13. The assembly 31 carrying the bevelled roller 37 is so pivoted that the roller 37 can be displaced slightly by the conductor strip as it moves across the die opening and will return into position under pressure from the spring 35 when the roll shaft is returned. The roll shafts are geared to rotate synchronously in opposite directions by gears 13 and 14, the cams being arranged to act in phase if the conductor bar contains an even number of strips (so that diagonally opposite end strips will be moved longitudinally and then laterally in unison) and 180 degrees out of phase if the bar contains an odd number of strips (so that the same movement will take place but in two successive stages). An alternative construction (Figs. 7-12, not shown) has a different arrangement for mounting the bevelled wheel 37. The width of the die aperture can be altered by changing the rolls 6 and the height can be varied by adding collars to therolls. The construction automatically allows for slight changes in conductor strip dimensions.
Patent GB-766341-A (GB)
Title: Improvements in or relating to arrangements for coupling helical wave retarders to high frequency lines or waveguides
IPC: C03C3/16
Filed: 1953-03-09
Abstract: 766,341. Travelling-wave tubes. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIC]. March 9, 1953 [March 8, 1952], No. 6396/53. Class 39(1). [Also in Group XL(b)] The helix 1, Fig. 2, of a travelling-wave tube is coupled to an external transmission line 11, 12 or waveguide 31, Fig. 4, by an impedance transformer comprising a first metal member 6 and the helix lead 13, Fig. 2, or by a first metal member 6 and a second metal member 23, Fig. 4, the helix passing through an aperture in the first metal member so that the end turn or 2-3 end turns of the helix is or are surrounded by the aperture. In one form, Fig. 2, the input end of the helix passes through a cup-shaped metal member 6 and lead 13 extends parallel to the surface of disc 5 to form an impedance transformer, and is connected via sealed in contact 9 to the inner conductor 11 of a coaxial input line. The outer cylindrical part of cup 6 is n#/4 (n is any odd number) to obtain a high frequency short circuit to casing 7. The output end may be similarly constructed. In a modification, Fig. 3 (not shown) the device has input and output coaxial line sections coaxial with the tube and both enclosed within the tube envelope. The inner conductors form the gun and collector electrodes, and coaxial connections in the form of discs or tubes are sealed through the envelope. The helix is mechanically supported by a glass tube or ceramic rods. In a modification the glass tube forms part of the envelope the ends being sealed to the inner conductors of the coaxial line sections. The helix may be coupled to waveguides instead of to coaxial lines. In one such form, Fig. 4, coupling is provided by two cupshaped metal members 24, 27 which serve as impedance transformers. The helix is connected to disc 23, and the guide is of the 'capacitively loaded' type. Exact impedance matching can be obtained by capacitive or inductive shutters or short circuiting sliders in the guide. In a modification, Fig. 5 (not shown) the gun, helix and collector are each surrounded over their entire length by a separate metal cylinder with a dine portion or portions forming continuations of the guide walls. The ends of the helix are connected to the two end discs, and a coil focusses the beam. The spaces between the metal cylinders are sealed by glass rings, and the ends of the tube by glass plates. The guides have sections turned by pistons for impedance matching disturbances due to increased capacity owing to the glass wall of the tube functioning as a dielectric are avoided by the provision of one or more annular ledges on one or both of the coupling members inside the tube, Figs. 6, 7 (not shown) which gives a compensatory increase in inductance. One of the coupling members may form part of the tube wall. The guide may have an extension formed as a wave trap to prevent escape of high frequency energy.
Patent GB-717865-A (GB)
Title: An improved device for the blowing of pig iron in a converter
IPC: C21C5/32
Filed: 1952-03-12
Abstract: 717,865. Iron manufacture. OESTERREICHISCH-ALPINE MONTANGES. March 12, 1952 [March 13, 1951151No. 6397/52. Class 72 A device for converting pig iron to steel in which an oxidizing gas is blown against the surface of the metal bath comprises an additional pipe, opening in the upper part of the converter and supplying an oxidizing gas which does not impinge on the surface of the bath. As shown a converter 1 has a pipe 4 supplying oxidizing gas which impinges on the surface 5 of the bath and an additional pipe 7, the open end 8 of which penetrates a short distance into the converter, the oxidizing gas from which burns the carbon monoxide produced at the surface of the melt and maintains a high temperature near the mouth of the converter. The pipe 7 may be adjustable in position and may be removed with the pipe 4 when the conversion is complete
Patent GB-549519-A (GB)
Title: High vacuum distillation apparatus
IPC: B01D1/22
Filed: 1941-05-19
Abstract: 549,519. High vacuum short path distillation: spray acid film evaporators. DISTILLATION PRODUCTS, Inc. May 19, 1941, No. 6423. Convention date, May 22, 1940. [Class 32] In high vacuum short path distillation apparatus of the kind described in Specification 482,883 absorption of heat by the liquid distilland and condensate is decreased by making the distilling and condensing surfaces of highly polished material, e.g. steel, nickel, silver. Highly polished reflectors with a sandwich layer of non-conducting material, e.g. glass wool, rock wool, crumpled aluminium foil, magnesium or titanium oxides, are provided behind the electric elements used to heat the distilling surface. A pair of oppositely arranged distilling surfaces may be positioned on opposite sides of a rotary plate which distributes a thin curtain of condensate acting as a condensing surface. A pair of highly polished plates 22, 34 are arranged in a pressure-tight container 4, 6, 8 evacuated through conduits 10, 12 and rotated on a shaft 14. The surface 22 is heated by an element 26 provided with a polished reflector 28. Liquid to be distilled is fed by a pipe 30 to the dished centre of plate 22, undistilled liquid being thrown off into a gutter 24 and removed through pipe 32. The vapours are condensed on the plate 34 and the condensate fed to a gutter 36 may be recirculated in part after passing through a cooler 42 and filter 40. In Fig. 2 a pair of opposed rotary distilling plates 76, 78 to which distilland is fed by pipes 88 enclose a small rotary condenser plate 92 from which the condensate is thrown in a sheet or curtain of spray which itself forms a condensing surface for the vapours ; the condensate is caught in a gutter 94 and recirculated through cooling and filtering devices 98. A pair of reflecting surfaces comprising each pairs of reflecting surfaces 82, 86 separated by non- conducting packing 84, are arranged behind the heating elements 80. U.S.A. Specification 1,905,201 is referred to.
Patent GB-690043-A (GB)
Title: Improvements in or relating to means for reducing irregularities in the delivery of centre filling apparatus for use in the manufacture of sugar confectionery
IPC: A23G3/20
Filed: 1950-03-16
Abstract: 690,043. Reciprocating pumps. SANDALL PRECISION CO., Ltd., and BARKER, A. W. June 1, 1951 [March 16, 1950], No. 6602/50. Class 102 (i). A centre-filling machine for use in the manufacture of sugar confectionery comprises a hopper for the filling supplying a reciprocating pump which forces the filling to an injection tube. To maintain uniform flow from the pump, a pressure balancer is fitted to the pump outlet and comprises a casing 10 connected to the pump cylinder 3 and also to a connector 14 for the hose leading to the injection tube. The casing 10 contains a non-return valve 20, serving as the pump delivery valve, and a piston 21 loaded by one or more springs 26, 29 which are adjustable by the cap 25; a tell-tale rod 23 projects through the cap 25. The pump may be of the type described in Specification 670,795.
Patent GB-222392-A (GB)
Title: Improvements in expanding tables
IPC: A47B1/05
Filed: 1924-03-14
Abstract: 222,392. Wood, B. H., and Matthews, H. L. March 14, 1924. Telescopic tables with vertically adjustable principal tops a have extension flaps b normally resting beneath and adapted to be drawn out and raised to the normal level of the top a. Wedges e are fixed on the underside of the top a for raising it while the flaps are extended, corresponding wedges h being carried on a slide i operated from one end of the table by a rod k pivoted to the slide and guided horizontally in the table frame g. The top a is vertically guided by the engagement of projections thereon between guide pieces f on the frame, and is held, when raised, by the engagement in the table frame of a notch r in the rod k. Oblique runners m on the flaps b slide in notches in the end members g<1> of the table frame so that the flaps rise without touching the raised top a when they are extended, and the runners m engage under a piece o fixed on the table frame to form cantilever supports for the flaps. The runners may have catches p to enter recesses in the table frame q to lock the flaps in their outer position.
Patent GB-1098084-A (GB)
Title: Improvements in or relating to pipe fittings
Inventor: SLINGSBY THOMAS JOHN LESLIE
IPC: F16L19/08
Filed: 1964-02-18
Abstract: 1,098,084. Pipe couplings. WALTER SLINGSBY & CO. Ltd. April 9, 1965 [Feb. 18. 1964], No. 6668/64. Heading F2G. A resilient sealing ring 5 is compressed by a collar 10 screwed on to a fitting 1 and a split collet 13 is wedged between the pipe and collar so that the serrations 15 thereof engage the pipe. The collet is of metal or synthetic plastics material, split in one or more places, and is held in the expanded condition by a spring ring 16. A washer 14 and a bearing ring 6 is disposed between the collet and the ring 5, the latter being surrounded by an extension 7 of the ring 6.
Patent GB-921669-A (GB)
Title: Improvements in and relating to squirrel cage motors
Inventor: EASTWOOD FREDERICK AUGUSTUS
IPC: H02K17/16
Filed: 1961-02-23
Abstract: 921,669. Squirrel - cage constructions. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 17, 1962 [Feb. 23, 1961], No. 6687/61. Class 35. Improved starting torque is obtained from a squirrel-cage induction motor by enclosing the end of the squirrel-cage in a body of non- magnetic electrically conducting material, e.g. aluminium, separated from laminations 2, rotor bars 4 and end ring 5 by insulating material 7. The insulating material may be the film of aluminium oxide formed when casting the body or other high temperature insulation, e.g. mica dust or synthetic material. The shape of the body may be modified so as not to impair the cooling of the rotor, Fig. 2 (not shown), or it may consist of two mating parts clamped around the end ring, Fig. 3 (not shown).
Patent GB-724300-A (GB)
Title: An improved machine for extruding sausage meat or other plastic substances
IPC: A22C11/04
Filed: 1953-03-11
Abstract: 724,300. Delivering measured quantities of liquid. BARNET, D. F. March 11, 1953, No. 6688/53. Class 106 (5). [Also in Group VI] Sausage meat or other plastic substance fed under extrusion pressure to an inlet 10 is delivered in successive measured quantities through an outlet 11, the meat first being directed from 10 by a hand rockable valve 9 through a tapered passage 6 to fill a (left-hand) cylinder 3. In filling, the piston rod 20 is forced out pulling with it the connected tie rods 26 which at their right-hand end drive inwards the other piston 19 to extrude the previous charge of meat through the passage 6 and along the smooth incline of the valve 9 to the outlet 11. The valve 9 is then rocked through 90 degrees by a handle 12 to dotted line position whereby a fresh charge of meat is directed to the right-hand cylinder 3 while the other piston 19 empties its cylinder through the outlet 11, the piston stroke being terminated when the lock nut 24 abuts against the surround of the empty cylinder. The amount of the quantity received and delivered can be varied by handwheels 23 which adjust the position of each piston 19 relative to its crosshead 22. Since the consistency of the meat may vary from time to time, a constant weight is obtained by adjusting the volume of meat delivered by screwing lock nuts 25 along the tie rods 26 to vary the position at which they abut against the respective cylinder surround, thus varying the stroke. Triangular section rings 27 may be located in the shoulder of each cylinder to prevent meat lodging and sticking there. The valve and passage are suitably curved to allow a smooth flow of the meat. Stops 13 limit the rocking of the valve 9 to 90 degrees.
Patent GB-758685-A (GB)
Title: Improvements in and relating to the protection of ensilage
IPC: A23K3/03
Filed: 1954-03-08
Abstract: Ensilage is preserved against deterioration by forming in situ on the exposed surfaces an air-impervious non-toxic film, preferably of carboxy-methyl-cellulose.  The film may be applied by thoroughly wetting the surface and adding the material in powder form, by spraying the surface with a solution of the material, or by blowing the material in the form of a powder or in solution into the silo with the ensilage.  A preservative for the material may be included.
Patent GB-1046981-A (GB)
Title: Index mechanism for gear sector cutting machines and the like
IPC: B23F23/08
Filed: 1965-02-17
Abstract: 1,046,981. Indexing. GLEASON WORKS. Feb. 17, 1965 [Feb. 28, 1964], No. 6824/65. Headings B3B and B3K. [Also in Division F2] In an index mechanism of the kind described in Specification 1,023,058, detent notches 37 in a driven member 15 are unequally spaced and return of the mechanism to the starting position before cutting each workpiece is effected by a piston 43, reciprocable in a cylinder bore 44, having teeth 45 meshing with pinion teeth 46 on the driven member 15. A slot 19 is opensided in order that the driving member 22 does not effect further counterclockwise advance of the driven member 15 just prior to the return motion. A solenoid-operated reversing valve in the hydraulic control system controls the supply of fluid to the lower end of cylinder bore 44.