baber/WOPTO huggingface dataset:
Patent GB-741127-A (GB)
Title: Improvements in and relating to optical light-projecting systems particularly for diascopic projection
IPC: G03B21/20
Filed: 1951-12-19
Abstract: 741,127. Optical systems. MARTIN H. Dec. 19, 1952 [Dec. 19, 1951]. No. 29775/51. Class 97 (1). An illuminating system for diascopic optical projection or for spot-lighting comprises a lamp 5, with a condenser system for producing a beam converging towards a point 3 near a lens 7 which images on to the object 10 a selected cross-section 8 of the converging beam, e.g. where it is uniform, a further condenser 9 concentrating the light transmitted by the object into a projection objective 11. In the form shown the lamp is disposed with its filament at the centre of a spherical reflector 6 and at the rear focus of one or more truncated ellipsoidal reflectors 1 surrounding a prismatic lens 4. When the system is used for spotlighting the object 10 is a mask shaped with the contour of the area to be lighted. A correcting member may be introduced if the light source is elongated and the shape of the object 10 is not, or vice versa. For this purpose a negative or positive cylindrical lens may be introduced between the lenses 7 and 9 or an inclined cylindrical mirror may reflect the beam through approximately 90 degrees. Where the source of light is a mercury arc an auxiliary lamp may be inserted in the system near the point 3 to project back to the main lamp to heat it and assist starting. This lamp may have a condensing system like the main lamp and the lens 7 may be movable to accommodate it. Specifications 327,129, (Class 97 (i)), 360,910, [Group XI], 567,154 and 573,700 are referred to.
Patent GB-719719-A (GB)
Title: Improvements in or relating to the drying of granular or pulverulent materials
IPC: F26B11/04
Filed: 1951-12-20
Abstract: 719,719. Drying granular material. RONDAN, J. A. Dec. 20, 1951, No. 29933/51. Class 34(2) In an apparatus for drying granular material liquid or finely divided solid fuel is ignited in a chamber 7 to obtain substantially complete combustion and secondary air .is passed over the chamber to mix with the combustion products and flow into the top part of a rotary drying drum 11 along the inner side wall of which the material is moved bv a helical rib 16 to an outlet and is dried by heat from the rib and wall which are heated by the hot gases. The combustion chamber 7 is mounted in a fixed drum 3 and fuel is injected by a means 8, air being blown around the chamber 7 by a fan 5 to mix with the combustion products and pass through a tube 10 into the upper part of the drying drum 11.
Patent GB-738304-A (GB)
Title: Improvements in and relating to the production of artificial threads, fibres, filaments, films and the like
Inventor: BASHFORD LESLIE ARTHUR
IPC: D01F6/18
Filed: 1952-11-27
Abstract: Threads, fibres, filaments, films and the like of acrylonitrile copolymers containing 50-98 per cent by weight of acrylonitrile and 50-2 per cent of at least one other polymerizable compound, are obtained by extruding a solution of the copolymer in dimethyl nitrosamine into a coagulating bath consisting of an aqueous solution containing at least 10 per cent by weight of potassium acetate, sodium acetate, calcium chloride or zinc chloride. Solutions containing 20-25 per cent of potassium acetate, 15 per cent of sodium acetate, 18 per cent of calcium chloride or 40 per cent of zinc chloride are preferred coagulating liquids.  In an example, a solution in dimethyl nitrosamine of a copolymer of acrylonitrile and methyl acrylate is extruded into a 20 per cent solution of potassium acetate at 24 DEG  C.  The thread produced is withdrawn from the bath and passed round a system of rollers so that it is stretched in air. It is washed on an advancing reel and then stretched in steam at 100 DEG  C.  The thread is dried at 60 DEG  C. in a relaxed state so that the fibres become crimped.  In another example, a solution of sodium acetate is used as the coagulating liquid and the filments which are collected as a tow are cut to form staple fibres after being stretched in steam. Other copolymers referred to are those of acrylonitrile and vinyl acetate or vinylidene chloride, and ternary copolymers of acrylonitrile, vinyl pyridine and methyl acrylate or vinyl acetate.  Specifications 706,263 and 738,293 are referred to.
Patent GB-1286165-A (GB)
Title: Surgical devices
Inventor: HEIMLICH HENRY JAY
IPC: A61M1/00
Filed: 1970-06-20
Abstract: 1286165 Aspirator tubing H J HEIMLICH 20 June 1970 30061/70 Heading A5R Aspirator tubing for use in a surgical operating room wherein there is a sterile field at the operating table surrounded by an unsterile field, comprises a length of flexible tubing 17 for transmitting suction to the sterile field, a sheath 16 having an inside cross-section larger than the outside cross-section of the tubing, so that a portion of the tubing may be stored in the sheath but withdrawn at will, means for removably securing the sheath at the operating table with at least one end in the sterile field, the sheath having a first opening 22 near said one end, means for connecting the other end of the sheath to a source of suction, the sheath having a second opening 25 near said other end, one end of said tubing being arranged within said sheath for communication with the suction source, the tubing in an extended condition extending out of the sheath through the opening 22 and having a retracted condition in which the tubing is contained within the sheath, the sheath being completely closed except for the openings near its ends, and a seal between the tubing and the interior of the sheath defining a chamber between the seal and the one sheath end so that the interior of the sheath defining in part the chamber always remains sterile and prevents contamination of the outside of the tubing exposed in the chamber during the periods that the latter is stored within the sheath. In the shown embodiment the tubing 17 is formed so that it normally assumes the shape of a coil or helix 28, its lower end being connected to an inwardly projecting extension 29. In an alternative embodiment, figure 3 (not shown), the tubing 17 is connected to a flexible frustoconical membrane (31) provided within the sheath 16 and serving as a partition for separating the interior thereof into an atmospheric pressure region above the membrane and a suction region below it. When it is desired to retract the tubing, the tubing 17 is occluded, e.g. by pinching it, and the suction pulls the membrane (31) downwardly, along with the tubing 17. In a further embodiment. Figure 4 (not shown), the tubing is retracted in a similar manner, in that the suction is used, but the membrane is replaced by a piston (36). An accordian pleated tube (37) is secured in an air tight manner at its upper end to the underface of the piston (36), the tubing 17 protruding through the piston and into the pleated tube (37). The sheath 16 may be provided with a slot (38), Figure 5 (not shown) at its upper end within which the suction tip (30), which may have a larger diameter that tubing 17, may rest while not in use. A means 18 for fastening the sheath 16 to an operating table is also included.
Patent GB-1344496-A (GB)
Title: Record card
IPC: G01N33/487
Filed: 1971-04-19
Abstract: 1344496 Labels BECTON DICKINSON & CO 19 April 1971 [2 March 1970] 30125/72 Divided out of 1344494 Heading B8F [Also in Division G1] For use in identifying a sample (e.g. of blood) and in recording and displaying component determinations (e.g. readings of a colourimeter for determining a particular component of the sample, e.g. haemoglobin) an element 90 has a record card portion 92 and an identifying tab 94 with at least one aperture 98, the tab being detachable from the card along a line of weakness 97 and the record card having a scale 95 printed along one edge and two spaced apertures 96 whose spacing is preselected to indicate a particular sample component. Different modules are associated with a meter for different component determinations and have pairs of projections spaced to engage the apertures 96 of their corresponding record cards 92. Modules, cards and tabs may also be colour-coded for each component.  Of the two tabs 94 shown in Fig. 1, after labelling and separating one may be positioned on a micro-pipette by threading a capillary tube thereof through two apertures 98 and the other may be attached to the cap of a reagent vial, the cap having four projections to engage the four apertures 98. When a module is positioned relative to the meter the reading thereof may be marked directly on the scale 95 to make a permanent record of the determination on an appropriate card 92. The card also includes a scale 103 that can be used in recording the percentage of red blood corpuscles in a sample from a finger puncture in a capillary tube, capped and centrifuged, a mark being made on the scale 103 at the interface between the plasma and the heavier, packed red cells. A cut-out to receive the cap assists accurate placing of the tube. If a series of daily record cards are overlapped with their scales 95 parallel, the marks will from a graph as described in Specification 1,344,495.
Patent GB-1283581-A (GB)
Title: Improvements in or relating to electric fuses
Inventor: WATKISS JAMES HERBERT
IPC: H01H69/02
Filed: 1969-06-13
Abstract: 1283581 Fusible cut-outs EDWARD WILCOX & CO Ltd 13 April 1970 [13 June 1969] 30130/69 Addition to 1165402 Heading H2G A method of producing an alloy modified fuse as defined in the parent Specification wherein the alloying metal 18 is bonded to a conductor element 16 by a combination of pressure, deformation and heating the metals to a temperature less than the melting point of the alloying metal whereby the alloying metal and the conductor element are welded together. The conductor element may be notched or pierced, either before or after the application of the alloying metal, to form a zone in the conductor element of steep temperature gradient. Said pressure, deformation and heat may be applied to the conductor element and alloying metal by heated blocks 10 and 12, movable towards and away from each other, means 14 being provided for limiting the travel of the blocks towards each other. The conductor element and alloying metal may be made of silver and tin respectively, and the blocks would in this case be heated to a temperature of 200‹ C. When tin wire is used as the alloying metal the deformed thickness of the tin wire is not more than 1/5 of the original diameter of the wire.
Patent GB-923191-A (GB)
Title: Box folding and locking device
IPC: B31B50/50
Filed: 1960-09-01
Abstract: 923,191. Box making machines. ATLAS GENERAL INDUSTRIES Inc. Sept. 1, 1960 [Sept. 1, 1959], No. 30137/60. Class 18. A box is formed by forcing a blank 11 through a die by a plunger 33 which holds up side 16 before side 12 which has a flap 20 which is folded back against the side 16 so that a locking tab 22 thereon can be forced through a slot 24 in an extension of the side 16 by a finger 56 which moves horizontally inward relative to the plunger by following the downward motion of the plunger. The flap 20 which may be connected to both adjacent sides is creased at 21 and by downward movement is folded over by contact with the sloping face 52. In detail, as the plunger continues on its downward stroke a projection on the plunger drive contacts the stub 50, Fig. 12, which operates the push-rods 69 to actuate the guide bar 54, causing the tucker fingers 56 to move downward and inward, this motion being constrained by the machined recesses 53. The end faces 57 of the tucker fingers remain substantially parallel to the face of the plunger 33 as they move directly inward relative to the plunger 33 and box. The bottom limit of the plunger 33 movement coincides with the limit of the inward movement of the tucker fingers 56; the return motion of the plunger 33 and the tucking apparatus is an exact reversal of the box forming portion of the cycle. After the tucker fingers have withdrawn from the H slots 24 in dust flaps 27, 28, of the sides 16, 17, these dust flaps abut a stripper which prevents the box from following the plunger 33 further. When the plunger 33 has finally withdrawn from the now stationary box, it drops from the open bottom of the die on to a conveyer Blanks may be fed to the machine by means of a feeder mechanism such as that described in Specification 785,183.
Patent GB-263279-A (GB)
Title: Improvements in metal shearing machines
IPC: B23D15/00
Filed: 1925-11-30
Abstract: 263,279. Bennie, H. 0., and Orr, R. W. Nov. 30, 1925. Shearing; shear-blades. - A plate-shearing machine has a cutter 1 for severing along the line C D and a cutter 2 for severing across the waste strip. The cutters are arranged to allow the cut plate to clear the frame 4. The end of the plate is sheared by the cutter 2 and the waste is cross cut by the cutter 1 without slewing the plate. A head 3, reciprocated by crank mechanism, carries the blades 1, 2 which cooperate with stationary blades 5, 6. For cutting a plate to a concave shape the junction of the blades is rounded. The waste drops through a hole 7 in the machine frame.
Patent GB-965027-A (GB)
Title: Intelligence transmission systems
IPC: H04B1/58
Filed: 1962-08-07
Abstract: 965,027. Substation circuits. SIEMENS & HALSKE A.G. Aug. 7, 1962 [Aug. 7, 1961], No. 30199/62. Headings H4K and H4R. In a substation anti-sidetone circuit, a microphone M1 is connected via a balancing resistor N1 to the emitter of a common base amplifier T, a line FL is connected to the collector and a receiver H1 is connected between the collector and emitter electrodes as shown. It is stated that if the impedances of N and FL are equal then microphone signals will not appear in the receiver. The transistors may be current-fed over the line using at the substation a potential divider including a Zener diode (Fig. 3, not shown), or by using the transducers themselves as a potential divider in the event that they require energizing current (Fig. 4, not shown).
Patent GB-1342262-A (GB)
Title: Screw drive with ball bearings
IPC: F16H25/22
Filed: 1971-06-28
Abstract: 1342262 Screw-and-nut gearing A MANNESMANN 28 June 1971 [31 Aug 1970] 30252/71 Heading F2Q In a recirculating ball-type screw-and-nut gear the ball nut 3, at each end of the screw thread therein, has a transfer channel 4 for the balls 2, the two transfer channels 4 being connected together by a return channel 5 and having, integrally formed on the nut 3, webs 6, 7 which overlie the transfer channels to form an outwardly extending groove 9 the width of which is smaller than the diameter of the balls which are thus retained therein, closure members 8 at each end of the threaded nut serving to deflect the balls 2 into the transfer recirculating channels whereby in operation a jointless transistion of balls out of the screw threads and into the recirculating channels 4, 5 is achieved. The recirculating channels 4, 5 may be machined in the body of the nut through the grooves 9, or, can be jointly formed together with the grooves in the body of the nut when the nut is produced by a casting or sintering process, the return channel 5 being formed axially parallel or spirally through the wall of the nut.
Patent GB-505109-A (GB)
Title: Improvements relating to landing gear arrangements of aircraft
IPC: B64C25/50
Filed: 1937-11-04
Abstract: 505,109. Aircraft alighting - gear. GENERAL AIRCRAFT, Ltd., WILLIAMS, D. L. H., and CROCOMBE, F. F. Nov. 4, 1937, No. 30282. [Class 4] In aircraft alighting-gear in which nose and main landing elements are disposed relatively to the centre of gravity of the aircraft such that. when the aircraft is resting on the elements its tail structure is maintained clear of the ground, the mounting of the nose element permits orientation so as to cause or permit a change of direction of the aircraft, means being provided to restrain or prevent such orientation. In one form, the alighting gear includes wheels 12 disposed rearwardly of the centre of gravity of the aircraft and a steerable and castoring nose wheel 11. The nose wheel is mounted in a fork 16 mounted on one part of a telescopic shock-absorber, relative rotation between the parts of which is prevented by links 17, 18. The shock-absorber is mounted for rotation in bushes 19, 20 and castoring is restrained by a cam-plate 27 having a depression 34 and engaging a compression spring 30. Rotation of the shock-absorber is further restrained by a brakeband 23 having an adjustable tensioning-device 24. Orientation of the wheel may be prevented by a locking-pin 35. In a modification, the shock-absorber projects forwardly and downwardly and a lock is arranged so that the shockabsorber is either connected with steering- mechanism or is positively locked.
Patent GB-918978-A (GB)
Title: Improvements in electrical transformers
Inventor: WEBB DENIS ARTHUR
IPC: H01F27/28
Filed: 1958-09-23
Abstract: 918,978. Transformer windings. RACAL ELECTRONICS Ltd. Sept. 16, 1959 [Sept. 23, 1958], No. 30299/58. Class 38 (2). A miniature transformer for use in a magnetic shift register comprises a toroidal core T on which has been wound a single multistranded cable C, the individual strands 1-6 being insulated from each other and forming all the primary and secondary windings of the transformer. Two or more strands may be connected in series aiding relationship. The transformer is wound manually.
Patent GB-159341-A (GB)
Title: Improvements in steering wheels
IPC: B62D1/04
Filed: 1919-12-04
Abstract: 159,341. Page, L. M., and Barlow, H. J. Dec. 4, 1919. Hand-Wheels.-A steering-wheel rim 1 is cast hollow by coring and provided with an annular opening 2, or suitable circumferential and transverse openings, for removing the core and improving the grip of the hand on the wheel. The whole wheel may be cast in one piece, and may be coated with celluloid. It may be provided with webs across the interior of the rim, and the spokes may be curved in plan and of the section shown in Fig. 5.
Patent GB-266807-A (GB)
Title: Improvements in the manufacture of hollow bodies from plastic or cementitious material
IPC: B28B21/32
Filed: 1925-12-01
Abstract: 266,807. Nichols, C. R. Dec. 1, 1925. Centrifugal machines.-In making hollow bodies, such as pipes, from cementitious material or in lining iron pipes, by centrifugal casting, the superfluous or deleterious material is driven to the inner surface of the body or to the inner surfaces of successively deposited layers by the intensity of the centrifugal action and is removed, while the body is being cast, by helical movement therethrough. The pipe is formed preferably in a one-piece mould 7 supported for rotation in any suitable manner and provided with endforming rings 48. The pipe may be reinforced and the mould may be lined with fusible material, such as beeswax or cornuba wax, for impregnating the formed pipe. The cementitious material is fed into the mould by a spiral flight conveyer 37, the flights of which have a right-hand and left-hand pitch at opposite ends so that the material may be fed to the mould at both ends. The shaft 36 of the conveyer is mounted in pivoted arms 41 which are moved by screws 39 rotated by cranks 38 to adjust the radial distance of the flights 37 from the wall of the mould. The conveyer is moved longitudinally by rack and pinion gearing 45, 46 operated by a handle 44. After distribution of the material, the conveyer is moved until only one set of flights is in contact with the inner surface of the pipe. The water and other light material brought to the surface by centrifugal action while the material densifies is carried out at one end of the mould by the single set of flights and the inner surface of the pipe provided with a smooth finish. The shaft 36 may be reciprocated to accentuate the polishing action. The flights 37 may be mounted on a trough 50, Fig. 5, which is eccentrically mounted on a shaft 51. By turning the shaft 51 by a hand-wheel after deposition of the material, the flights are brought into position to remove deleterious material. In a further form, Fig. 7, the flights 37 are slidably mounted on the edge of the trough 56 and are moved into contact with the pipe to be moulded by a shaft 51. In another modification, Fig. 8, the flights are carried by a slide plate 59 having a number of internal grooves 58 which adjustably engage a pair of flanges 57 on the top of a charging trough. The bottom of the trough is slidably opened by a rack and pinion.
Patent GB-1092352-A (GB)
Title: Improvements in or relating to cutting yarns, fabrics and other textile materials
Inventor: DAVIES BARRIE LINTON
IPC: D06C29/00
Filed: 1964-07-30
Abstract: Textile material of synthetic or natural origin or paper is cut by a narrow jet of steam preferably with a pressure of at least 20 p.s.i.g. and with a temperature between 200 and 450 DEG C.  The material may be fibres, filaments, yarns, fabrics, films or foamed sheet and the fabrics may be knitted, woven, or non-woven.  In particular the material may contain thermoplastic material of which Examples are given.  Waste yarns may be cut from a yarn support, e.g. a series of jets arranged at decreasing heights may be used to cut a thick layer of yarn from a beam at a single pass. Fabrics on a stenter or on a stainless steel conveyor belt may be cut or trtimmed by the jet.  A method of producing the cutting jet and the cutting of particular materials are described.
Patent GB-829772-A (GB)
Title: Improvements relating to motor-driven camshaft controllers for electrical apparatus
Inventor: JOWETT WALTER GORDON
IPC: H02P1/18
Filed: 1955-10-25
Abstract: 829,772. Controllers. ENGLISH ELECTRIC CO. Ltd. Oct. 22, 1956 [Oct. 25, 1955,] No. 30460/55. Class 38 (3). In a cam-shaft controller coupled to a motor through speed reduction means, the speed ratio is made numerically equal to the number of camshaft positions and a control switch, operated by the input shaft, is arranged to automatically stop the motor at each position. In the Figure, a D.C. motor armature Ma is reversibly connected to a supply 10 through contacts R1a, R2a and coupled through shaft 14 and gear-box 13 to a cam-shaft 11 carrying control segments 15, also a contact ring 17 having a gap 18 co-operating with contacts 19. A similar ring 20, with a gap 21 co-operating with contacts 22 is carried on a shaft 14, which also has a sectorial contact 23 mating with fixed contacts 24 in series with a relay coil R1 and normally closed contacts CR of a current relay in the power circuit. When a main switch 25 is closed, field winding Mf is energized from supply 10 and relay R1 will operate through contacts CR, 24 and a switch 26 in the " on " position. Contacts R1a connect the armature Ma to the supply and shaft 14 revolves. Before the circuit through contacts 24 is broken, contacts 22 are bridged by ring 20, completing an alternative path to R1 through R2b. At the end of one revolution of shaft 14, if contacts CR have opened, the circuit to R1 will be broken over contacts 22 and armature Ma will be braked by being shortcircuited over R1a, R2a. When contacts CR again close, or if they remain closed during the first operation, then further sequences will take place until a limit switch (not shown) breaks the circuit to R1. Switch 26 has a run back position which energizes R2 over R1b and contacts 19, reversely connecting the armature which revolves until the circuit is broken by the gap 18 in ring 17. Another arrangement is given in which additional contacts on a reversible control relay are used in place of ring 17 to give control in two directions.