baber/WOPTO huggingface dataset:
Patent GB-659126-A (GB)
Title: Improvements in end roll adjustment
IPC: B21B37/00
Filed: 1949-04-06
Abstract: 659,126. Rolling. BIRDSBORO STEEL FOUNDRY & MACHINE CO. April 6, 1949, No. 9380. Convention date, April 10, 1948. [Class 83 (iv)] In a rolling-mill having a frame supporting chocks providing journal support for a pair of co-operating rolls 30, 31, a bracket 63 is mounted on the frame, extending over one end of one of the rolls and having a slot in a plane parallel to the roll axis and centrally disposed with respect to said axis, a thrust bearing 49-53 is provided on the roll end, a yoke 70 is mounted in the bracket slot and has arms 71 extending around and connected with the thrust bearing, and an adjustment is provided for the axial position of the yoke. Each bracket 63 is preferably made of two parts, joined by a plate 68 and spaced to provide a substantially horizontal slot 67 within which the yoke 70 may slide. Flanges 61 on the thrust bearing housing 53 are gripped in the yoke 70 between the hooked ends 72 of the arms 71 and screws 73 and the axial position of the yoke and roll adjusted by operation of the screw 76, which is then locked by nuts 77, 78. The screws 73 are slackened off to allow vertical movement of the thrust bearing when the pass adjusting screws 44 acting on breaker blocks 45 are being operated, a dog 82 sliding in a guideway 81 on the upper bearing chock preventing rotation of the thrust bearing. Stops 80 on the lower bracket portion limit the outward axial movement of the chocks.
Patent GB-654103-A (GB)
Title: Mechanical press for pressure-moulding
IPC: B30B11/12
Filed: 1947-04-09
Abstract: 654,103. Cylinder presses for moulding bricks &c. OYER, G. April 9, 1947, No. 9398. Convention date, May 21, 1946. [Class 87 (ii)] A brick &c. moulding machine comprises a cylinder 3 having one or more peripheral moulds, and cam or eccentric operated pressing and ejecting pistons 5. The cam or eccentric may be adjustable. As shown, the eccentric is a stud 7 adjustably mounted on a fixed axle 29. The cylinder is rotated intermittently on journals 4 by a pawl 10, Fig. 5, which engages a ratchet 9 on the cylinder. The pawl 10 pivotally mounted on an arm 12 rotatably mounted on a journal 4. In operation, the cylinder is rotated clockwise through 90 degrees by a connecting-rod 13, to bring an empty mould into position 1. This rotation causes a plunger 21, mounted on the arm 12, to ram the material in the nozzle part 23 of a hopper 22. A piston 24, withdrawn during this operation, is then moved forward to cram the pressed material into the mould. The connecting-rod 13 which has by this time returned to its original position shown in Fig. 5, moves forward again to rotate the cylinder through 90 degrees. At the same time a connecting-rod 17 moves forward to cause a pivoted plate 20 to swing up and close the bottom of the mould, while the piston 5<SP>1</SP> presses the material in the mould. At the end of the quarter-revolution, the plate 20 starts to return to its original position, Fig. 5. The moulded. material is then ejected by the piston 5 during the next quarter-revolution. There may be several filling points for the moulds, and each point may be fed either by a separate hopper or by a common hopper. The machine may be fitted with means for cleaning the pistons 5 and 24 and the plate 20. The Specification as open to inspection under Sect. 91 states that the arm 21 may be operated by a cam or eccentric. This subject-matter does not appear in the Specification as accepted.
Patent GB-709431-A (GB)
Title: Improvements relating to the testing of gear teeth
IPC: G01B11/24
Filed: 1951-04-23
Abstract: 709,431. Optical gauging apparatus. BURCH, C. R., BURCH, J. M., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. July 22, 1952 [April 23, 1951], No. 9403/51. Class 106 (2) A Michelson interferometer is adapted to test the accuracy of the shape of gear teeth in a manner similar to that described for testing screw threads in Specification 673,971. The gear is set up in a Michelson type interferometer in substitution for one of the two usual plane test surfaces and with its axis parallel to the optical axis, the surface of the gear is viewed by reflection from an auxiliary surface which is itself of the same general shape as the gear profile surface and is so shaped and disposed as to produce a substantially plane image of the gear surface which may be compared with a standard plane reference surface of the interferometer. A source of light 1 and condenser 2 illuminates a partially reflecting surface 3 resulting in rays converging on two achromatic lenses 4 and 5. The part of the beam which is reflected passes through lens 4 into a combination comprising a Cassegrain telescope having a secondary hyperboloid 6 provided with an axial aperture 7 through which the beam passes, and a primary paraboloid 8. A gear 9 and an auxiliary reflector 10 are cascaded by means of the telescope from which the beam passes out through the aperture 7 through the dividing plate 3 to an observing objective 11. The objective 11 is focused simultaneously on the gear surface being tested and the flat 15. The auxiliary reflector 10 is oriented by means of four variable controls until its axis coincides with the axis of the gear. The objective is simultaneously focused on the gear surface and the flat 15 by means of achromatic lenses 4 and 5 and the usual procedure for a Michelson interferometer is then followed. Any irregularities of the surfaces of the gear and auxiliary reflector as compared with the standard plane reflecting surface are revealed as light fringes in the normal manner. Formulae defining the gear teeth shape are given.
Patent GB-274174-A (GB)
Title: Improvements in or relating to radio signalling systems
IPC: G01S3/12
Filed: 1926-04-09
Abstract: 274,174. Jackson, L. Mellersh-, (Federal Telegraph Co.). April 9, 1926. Directive signalling; undesired signals, eliminating.- Relates to directive transmitters and receivers using jointly a loop aerial and an associated open aerial, and comprises several circuit arrangements for varying the energy transference between the two aerials with the object of modifying the polar directive diagram. In one modification signals arriving from a given direction on one wave-length are received, whilst signals from substantially the same direction on another wavelength are prevented from interfering. As shown in Fig. 1, the open aerial 14 is connected to a centre tapping on the loop aerial 15, the latter being tuned by a condenser 16 and coupled to a receiving or transmitting circuit 22 by coils 17, 24. The earth connection, which includes a tuning arrangement 12, 13 is made to a point 19 between two variable condensers 20, 21 connected in series across the loop 15. The two condensers 20, 21 are jointly variable in such a way that the tuning of the loop 15 is not affected. When the capacities 20, 21 are equal, the open-aerial circuit and the loop aerial are mutually independent, and the polar diagram is the figure of eight associated with a loop aerial alone. When the condensers 20, 21 are unbalanced, energy is transferred between the two aerial circuits, and the polar diagram is modified to the shape shown in Fig. 9, eventually becoming a cardioid or heart-shaped curve. The two condensers 20, 21 may be of equal fixed capacity, and the system may be unbalanced by variably coupling a coil in the bridge 16, 17 to the coil 12 in the earth lead. In another modification shown in Fig. 2, the openaerial is tuned by a joint similar movement of the sliders 27, 28 on the coils 25, 26, and the unbalancing effect is produced and varied by joint movements of the sliders 29, 30 in opposite directions. Adjustable condensers may also be inserted between the taps 27, 28 and the common earth connection. A switch may be provided to disconnect the open aerial. In the form shown in Fig. 7, a toroidal coil with a vertical axis is employed. Two variable taps 59, 60, arranged to. include between them any desired angle, are connected to variable coils 61, 62 and tuning- condenser 63 to form the closed loop. The earth connection is made through a tuning-condenser 65 and coil 64 in parallel to a point between two condensers 56, 57 connected in series between the taps 59, 60. The unbalancing effect may be produced by adjustment of the condensers 56, 57. Maximum radiation or response is obtained in the direction 74. By tuning the loop aerial circuit to a desired signal, and tuning the open aerial circuit to an interfering signal arriving from approximately the same direction, and then manipulating the unbalancing means, the receiver may be rendered irresponsive to the interfering signal, particularly if the two waves are of only slightly different length. A similar effect may be produced in transmission. Specifications. 138,318 and 185,169 are referred to.
Patent GB-622791-A (GB)
Title: Slider for sliding clasp fasteners
IPC: A44B19/26
Filed: 1947-04-09
Abstract: 622,791. Moulds for sliding-clasp fasteners. PLASCO, Ltd. April 9, 1947, No. 9460. Convention date, Oct. 11, 1946. [Class 87 (ii)] [Also in Group XXV] The inner surfaces of the spaced walls of a slider for sliding-clasp fasteners, connected at one end by a web 15 are flared outwardly at the edges 21 to provide a funnel-shaped entrance for the fastener elements. The slider is die cast on a core comprising two parts 24, 25. The part 24 has a pair of fingers 26 shaped to form the bevelled surfaces 21 and shoulders 29 to provide free pulling of the core. The other part 25 has a V end 30 to shape the inner end of the web 15 and chamfered ends 32 fitting into the shoulders 29.
Patent GB-128356-A (GB)
Title: Improved Method of Making Gas Obturators, Piston and like Rings and Apparatus for use therein.
Inventor: BARTLETT EDWARD ROBERT
IPC: B23P15/06
Filed: 1918-06-10
Abstract: 128,356. Bartlett, E. R. June 10, 1918. Rings.-In the manufacture cf piston rings for internal combustion engines &c., a strip of metal of the requisite length is curved at the ends by angular bending, and is then inserted in a holder and spun over the flange being afterwards trimmed to the requisite length. In bending the ends, the blank is laid on abed 6, Fig. 3, and is clamped by an eccentric 7. One end of the blank is then bent round the curved end of the bed, or round a roller mounted in the end of the bed by means of a roller 13 carried by a forked lever 12 which is pivoted on the bed. The roller 13 may be held against the blank by springs 25 attached to collars 25<1> adjustably secured on the pivot pin of the lever 12 by screws 27<1>. In order to permit movement of the roller in the lever the roller is carried by bushes sliding in recesses in the lever which are enclosed by plates 22. Adjustable gauges 28 may be arranged at the ends of the bed 6. In the modified apparatus shown in Fig. 10, the blank is clamped against a projection or roller 39 by an eccentric 41, and is bent by an adjustable roller 45 carried by a swinging arm 44. The partially bent blank is then inserted in a tapered groove formed between a convex conical surface on a mandrel 32 and the flange of a cup 34, Fig. 6, and is secured by screwing the cup on the mandrel. The flange of the ring is then spun over. The ring is then inserted in a recess at the other end of the mandre, and is retained by a disk 37 while the edge of the ring is trimmed in a lathe &c. The ring may be of copper, and the grain of the metal is preferably inclined at 45 degrees to the edge of the ring.
Patent GB-590159-A (GB)
Title: Improvements relating to heels for boots and shoes
IPC: A43B13/34
Filed: 1945-04-17
Abstract: 590,159. Heels for boots &c. SWAIN, R. P. April 17, 1945, No. 9566. [Class 17 (ii)] A heel comprises a foundation section 1 constituted by a wooden plug adapted to be permanently secured to a boot &c. as by heel pins 5, and an outer section 2 preferably moulded from plastic material provided with a separate or integral wearing surface 3 and adapted to fit over the section 1. The section 2 is detachably secured to the section 1 by a screw 7 passing from the heel seat through a hole in section 1 and tapped into a thickened portion of the section 2. A separate wearing surface may be attached by lugs 9 initially left standing proud from the section 2.
Patent GB-720381-A (GB)
Title: Improvements in tuners for television receivers
IPC: H03J1/14
Filed: 1952-04-16
Abstract: 720,381. Variable capacitors. STANDARD COIL PRODUCTS CO., Inc. April 16, 1952 [May 16, 1951], No. 9591/52. Class 37. [Also in Group XL (c)] A variable condenser usec to effect a fine control of tuning in a television pre amplifier comprising a plurality of selectable pre-set tuned circuits, comprises a di. electric insulating member 75 which is attached to a shaft 67 and upon which are mounted rotor plates 77. These embrace stator plates 81 and 85 mounted upon an insulating base and so vary the capacitance between them. The stator plates are so constructed as to have an inductive component which varies in such a fashion as to give approximately equal frequency shifts for a given rotation of the shaft 67 irrespective of the frequency to which the pre-amplifier is tuned. Specification 720,374 is referred to.
Patent GB-496629-A (GB)
Title: Insulated refrigerator casing
IPC: F25D23/06
Filed: 1938-03-29
Abstract: 496,629. Nonconducting coverings for heat. DEHN, F. B. (Dry-Zero Corporation) March 29, 1938, No. 9621. [Class 64 (ii)] In a refrigerator wall structure comprising inner and outer walls 13, 11 separated from each other by insulation material 12, particularly non-hygroscopic material, and having a discharge opening 14 for water of condensation, a mass of absorptive material 16 such as the insulation boards known under the Registered Trade Marks of " Celotex " and " Insulite," is positioned directly below the opening to receive the water and dispose of it by dispersion and evaporation to the surrounding air. The absorptive material is supported by channel members 17, and the flow of condensate thereto is facilitated by bevelling the lower insulation mass at 12a and by providing in the bottom of the outer wall 11 radial grooves 15 tapering downwardly toward the aperture. In a modification of the invention, a centrally apertured dished pan is arranged above the lower insulation slab with its outer edge extending beyond the inner wall 13 to catch falling condensate and direct it to its central opening which communicates with the discharge aperture 14 by a central channel in the insulation slab. The latter channel may be lined with a tube.
Patent GB-931823-A (GB)
Title: Improvements relating to set screws for automatic orientation and handling
IPC: B25B23/02
Filed: 1961-03-16
Abstract: 931,823. Socket-head locking screws. SET SCREW & MFG. CO. March 16, 1961 [March 28, 1960], No. 9658/61. Class 89 (1). [Also in Group XXX] In a machine, such as that described in Specification 807,845, for feeding and orienting cup-pointed, headless, set screws, a pair of parallel rollers 128, 130, Fig. 7, are arranged with their axes in a horizontal plane or in a plane inclined downwardly from the end at which they receive the screws from a spiral ramp on the inner surface of the side wall of a vibrated bowl in which the screws are placed. In order that the screws will drop point first into the clearance between grooves 144, 146 in the rollers, to be fed into the top of a delivery tube, the screws are given a bevelled surface 62, Fig. 6. This surface, extending less than the thread pitch, intersects the conical outer flank 60 of the cup-point in a circle 64 and intersects in a circle 80 the imaginary cylinder 72 which includes the thread crest. The diameter of the circle 64 is not greater than the minor diameter of the thread. The length of the cylinder 72 represents the maximum possible longitudinal spread of the lines of contact and support of the screw on the rollers 128, 130. The plane 68 containing the centre of gravity is nearer to the line 80 than to that end 76 of the cylinder 72 which is at the end of the screw having the socket 54. The screw may be of rolled 4140 steel, heat treated after forming and then cadmium plated.
Patent GB-293714-A (GB)
Title: Improvements in gas cocks, electric switches and the like
IPC: F23Q9/02
Filed: 1927-04-08
Abstract: 293,714. Horstmann Gear Co., Ltd., and Horstmann, A. April 8, 1927. Clockwork - actuated v a l v e s; actuating- mechanism. - In gas cocks, electric switches, &c. operating by semi-rotary movements the operative rotary member is actuated by the lateral and reciprocal movements of two sliding members b<8>, b', which are mounted at right angles to the axis of the rotary member and are slotted at b<12> and b<13> to engage crank pins or projections b<4>, b<5> thereon, the sliding members being actuated by the tappets a<2>, a<3> &c. of a clockwork or other like mechanism. The rotary member (e.g. cock plug) and the two sliding members are combined in one unit B, the operative ends of the sliding members being inclined and projecting through closely fitting slots in a curved plate b<10>, which fits, insect-tight, the side of the clockwork &c. casing. The opposite ends b<14>, b<15>, of the slides also project through to the exterior for hand operation in emergency. The device may be arranged for operation by an electric motor. As applied for operating an electric switch the slides g<1>, g<2>, Fig. 19, operate under the control of a tumbler spring arrangement g<4>, g<6> whereby the slide g<1> is projected quickly forwards and closes the switch contacts g<9>, g<10>. At the same time a gravity lever g<11> drops behind the armature block g<8> and locks the switch. For opening the switch the slide g<2> operates on the tail g<12> of the gravity locking lever g<11> and releases the spring armature which then resumes the open position as shown. The arrangements described are applicable for use as gas controllers, time switches, and automatic flashing signs. Specifications 14825/11, 415/14, 189,476; 234,861, [Class 80 (ii), Gearing, Variable-speed &c.], and 295,296, are referred to.
Patent GB-1484882-A (GB)
Title: Knitted fabric mulch
IPC: A01G25/00
Filed: 1974-09-17
Abstract: 1484882 Knitted fabrics GULF STATES PAPER CORP 17 Sept 1974 09755/77 Divided out of 1484881 Heading D1K [Also in Division A1] The description is identical to that of Parent Specification but the claims relate to a mulching fabric having irrigation tubes.
Patent GB-128003-A (GB)
Title: Improvements in or relating to Arbors for Milling-tools or other Cutting-tools.
Inventor: HERBERT ALFRED
IPC: B23B31/113
Filed: 1918-06-13
Abstract: 128,003. Herbert, Sir A., and Lloyd, A. H. June 13, 1918. Sockets.-Means for holding the shank B' of a milling-cutter B or like tool in a socket or arbor A, comprises a nut C screwing on to the tool at B<3> and engaging by a flanged portion C' a recess behind the collar A<2> on the socket, the flanged portion of the nut being cut away transversely at one part to allow of its removal when desired, after removing a screw C<4>. In a modification, the nut screws on to the arbor A, and has a flanged portion engaging between collars on the tool, the flanged portion being cut away eccentrically to allow the nut to be removed from the tool. In either case, the nut may be used to start withdrawing the tool from the socket.
Patent GB-618874-A (GB)
Title: Improvements in light valves
IPC: G02F1/01
Filed: 1946-03-29
Abstract: 618,874. Light valves. KODAK, Ltd. March 29, 1946, No. 9762. Convention date, March 31, 1945. [Class 40 (iii)] [Also in Group XX] A light valve comprises a surface which both reflects and transmits light mounted very close to a reflecting surface carried by a piezoelectric crystal. The former surface is provided by the hypotenuse face 12 of a prism 11, Fig. 1, which is spaced by a small amount from a metallic reflecting surface 13 carried by a piezo-electric crystal 20, the vibrations of which, when a suitable source of potential is connected to leads 21, 23 are effective to vary the separation of the surfaces 12 and 13 and thus to produce destructive interference in a light beam reflected in a direction such as 15. In an application of the invention to the production of sound tracks on motion picture film, Fig. 2 (not shown), the signals to be recorded are applied to the crystal and the emergent light beam from the valve is focused on to the desired area of the films. In this arrangement substantially complete optical interference is achieved by the use of a colour filter in the light beam incident on the valve. In another' application in which the valve is used as a shutter for a photographic camera, Fig. 3, a collimating lens 52 and a polarizing filter 53 are provided in the incident light path and the adjustment is such as to give complete destructive interference in the absence of a potential across the crystal. A high-speed shutter opening is produced by supplying the crystal with a very short electrical impulse through a brushtype pendulum switch 61 which completes a circuit through a plate 65 in falling from position 63 to position 66. In a modified construction of light valve, the crystal itself forms one reflecting surface and the electric field is applied between two plates, one of which carries the crystal, the other being mounted at the truncated apex of the prism (Fig. 6, not shown). In another modification, an adjustable wollaston prism positioned in the incident beam allows angles of optimum value for each of the planes of polarization to be selected (Fig. 4, not shown). The effect of departure from perfect monochromaticity and from the optimum angle of incidence is discussed mathematically and illustrated by curves (Fig. 7, not shown).
Patent GB-1294240-A (GB)
Title: Conductor-initiated electrohydraulic forming processes
IPC: B21D26/10
Filed: 1970-03-02
Abstract: 1294240 Electrohydraulic forming SIEMENS AG 2 March 1970 [6 March 1969] 9961/70 Heading B3Q [Also in Division H1] A method of electrohydraulic forming comprises connecting a first initiating conductor across the electrical supply to produce a first discharge, and in the "dark interval" of the first discharge producing a second discharge by connecting a second initiating conductor across the supply in parallel with the first. The "dark interval" is the period, following the discharge, during which metallic conduction is prevented by excessive atom spacing. In an example, Fig. 2A, the initiating wires 25, 26, 27 are connected in sequence to the capacitor battery 21 by switches 29, 210, 211, wire 36 being connected in the dark period following the disruption of wire 25 in workpiece 22, and wire 27 being connected after wire 26. The pressure waves produced by a discharge may be used to trigger a further discharge, or thermal action may damage insulation and initiate another discharge. Thus vaporization of wire 35, Fig. 3, destroys a polyethylene insulation 37 on a second wire 36. A disc 310, carrying part of the insulation 37, is raised by the pressure wave and permits contact between the wire 36 and the electrode 33 for producing a further pressure wave. Alternatively, concentric conductors (not shown), may be used so that a discharge through one layer weakens an underlying layer of insulation adjacent the electrode. Voltage remaining during the dark period punctures the insulation and continues the discharge through the succeeding conducting layer.
Patent HK-134096-A (HK)
Title: Signal coding
Inventor: CARR MICHAEL DOUGLAS
IPC: H04N19/94
Filed: 1996-07-25
Abstract: The current frame of the picture is compared (2) block-by-block with the previous frame to identify changed picture elements (pixels). The resulting matrix is matched ('vector quantised') (4) to one of a set of standard matrices ('VQ shapes'). Only those pixels flagged by the selected VQ shape are transmitted plus a "VQ shape code". This technique is modified in that the current frame is also compared (30) with a "background" frame stored (31) at the transmitter and at the receiver. Where, for any block, all the pixels flagged by the VQ shape are indicated by the second comparison as being the same as the background, the pixels are not sent - instead a shape code plus a "copy background" instruction is transmitted.