baber/WOPTO huggingface dataset:
Patent GB-557982-A (GB)
Title: Improvements in or relating to spring forks for motor cycles
IPC: B62K25/08
Filed: 1942-06-09
Abstract: 557,982. Vibration-dampers. NORTON MOTORS, Ltd., and SMITH, C. G. June 9, 1942, No. 7891. [Class 108 (iii)] [Also in Group XXXI] Relates to spring forks for motor-cycles of the type comprising a pair of tubes 10 rigidly secured to the steering-head 13, tubes 18 carrying the wheel spindle 20 and slidable on the tubes 10, and spring means for supporting the load. According to the invention, the spring means comprises two or more compression springs 25. 26 of different rating arranged between abutments on the tubes 10, 18 and which come into action progressively as the deflecion of the wheel increases. As shown, the springs 25, 26 are arranged in tandem but they may be concentrically arranged, the heavier spring coming into action when engaged by a shoulder on one of the tubes after the lighter spring has been compressed to a predetermined extent. A hydraulic damping device, primarily for damping rebound, is arranged within the tubes 10, 18 and comprises concentric tubes 31, 35, 40, the inner and outer tubes 31, 35 moving with the oil-filled fork-tube 18 and the intermediate tube 40 being connected by a pin 44 with the fork-tube 10, the pin passing through a slot 45 in the outer dampertube 31. In operation, upward movement of the fork-tube 18 with the inner and outer damper-tubes 31, 35 against the action of the springs 25, 26 increases the length of and creates a partial vacuum in the space at the lower end of the intermediate dampertube 40 between valve-containing plugs 36, 41 secured respectively to the damper-tubes 35, 40. Oil is thus drawn into the space through the passage 42, which may restrict the flow slightly, and past the ball-valve 43. On downward movement of the fork-tube 18 and plug 36, the valve 43 closes passage 42 and oil is forced upwardly through the calibrated passage 37 and past valve 38 in plug 36, considerable resistance thus being offered to rebound. The oil which passes the valve 38 accumulates in the inner damper-tube 35 until it can flow over the upper end of this tube and back down the outside of tube 31 to the forktube 18. On excessive downward movement of fork-tube 18, a bush 21 thereon covers holes 46 in the fork-tube 10 and thus traps oil in the annular space between the bush 21 and a bush 17 secured at the lower end of the fork-tube 10. On excessive upward movement of the fork-tube 18, a socket 32 at the lower end of the tube enters the lower end of the fork-tube 10 and the oil thus trapped also forms an hydraulic stop. A rebound spring may be incorporated in the damper by screwing the ends of a tension spring into helical grooves formed in the upper end of the damper and on a rod depending from a plug 15 at the upper end of the fork-tube 10. In a modification, instead of the intermediate dampertube 40 sliding on the inner damper-tube 35, the lower end of the latter tube may be formed as a piston working in the intermediate tube.
Patent GB-747983-A (GB)
Title: Improvements relating to methods of subsequently hardening used cold rolls
IPC: C21D9/38
Filed: 1954-03-18
Abstract: Used cold rolls, after regrinding, have a hole bored throughout the length of the core, the roll is then heated, by a gas burner or induction heater, throughout its entire cross-section to a temperature of 350-450 DEG C., the outer peripheral layer is quickly brought to the hardening temperature and quenched and finally the surface of the bore is also brought to the hardening temperature and quenched.  The temperature of the surface of the bore should be about 200 DEG C. before heating to the hardening temperature.  The roll may be rotated during the whole process.
Patent GB-854175-A (GB)
Title: A method and a device for erecting buildings
IPC: E04B1/35
Filed: 1957-03-11
Abstract: 854,175. Shuttering for casting walls and floors ; buildings. HEIDENSTAM, E. J. VON March 11, 1957 [March 10, 1956], No. 7974/57 Classes 20(1) and 20(2) A building is constructed by first casting floor slabs 7a-e, Fig. 6, on a base 1, mounting wall moulds 30 onthe edges of two or more of the slabs and hoisting the floor slabs to their final position while casting the walls. The floors are raised by jacks 24 climbing on rods 23 secured to cross pieces 22 on temporary pillars 8 in holes in the slabs, the jacks raising plates 29 adapted to engage nuts 28 on rods 27 secured to the slabs. The slab 7a is first lifted and when the nut 28 of the slab 7b engages the plate 29 slabs 7a and 7b are joined by straps 39, Fig. 9, thereafter plate 29 simultaneously engages the nuts of slabs 7c-e and all the slabs are lifted together. The moulds 30 before casting commences are provisionally supported with wall reinforcement 33 on boards 32 which when casting commences are removed and the moulds lowered and connected to the slabs 7a, 7b. As each slab reaches its final position during the hoisting it is temporarily supported by bisected collars 43, Fig. 10a, engaged in annular gaps between the sections 41 of the pillar 8. Concrete 44, Fig. 10, is finally cast over each slab and in gaps 45 formed in the walls 6. The casting of the walls is completed with the slabs 7a, 7b still connected together, then they are disconnected and the slab 7b is lowered to its final position. The wall moulds may have hooks 65, Fig. 25, engaging holes in the slabs 7a, 7b and they may be adjustable in a horizontal direction and the moulding face sheet may have a corrugated backing sheet. In Fig. 5 the edges of two sets of slabs 7 are moulded by a U section mould 9 raised step by step on supports 10 placed upon each other and secured by collars 13 and pins. The slabs may be corrugated, have slanting edges or be convex in which case a curved strickle carried by a swivel on a wheel carriage is used to shape the upper surface. The moulds for shaping the edges of the slabs may be used to mould the walls.
Patent GB-935322-A (GB)
Title: A test point guide
IPC: G01R31/28
Filed: 1962-03-01
Abstract: 935,322. Two-part couplings. NATIONAL CASH REGISTER CO. March 1, 1962 [April 27, 1961], No. 7987/62. Class 38 (1). To facilitate testing of printed circuit assemblies a test point guide is used, the guide comprising a body of insulating material 22 with a number of projections 24 from one side, which is secured to the printed circuit panel 13 so that test probes may be inserted between the projections to contact the conductive elements 15. Two such devices may be used, one on each side of the panel.
Patent GB-1504685-A (GB)
Title: Subtractive image analysis
IPC: G06T5/30
Filed: 1975-02-17
Abstract: 1504685 Subtractive image analysis IMAGE ANALYSING COMPUTERS Ltd 17 Feb 1975 [21 Feb 1974 23 Feb 1974] 7995/74 and 8346/74 Heading G1A In a subtractive image analysis system a field (a microscope slide) containing features to be investigated is imaged via a microscope 10 on to a television camera 12. The resulting video signal is passed via a threshold detector 14 (to produce constant amplitude pulses) to a gate 20 that is also supplied by an oscillator 18. The oscillator 18 provides a series of shorter duration constant amplitude pulses and so the gate's output represents a series of points (picture points, p.p.) which lie along each scanning line across the feature image. The picture points are supplied to a counter 26 which is reset in the absence of a picture point. The numerical count value in the counter 26 is compared after each picture point with a selected number n in a digital comparator 30. If the count value is greater than or equal to "n", a "1" signal is produced which may be counted on a counter 34 by turning a switch 36 to position 1. Thus the system is able to detect the number of times that the horizontal inspection strip ("n" picture points long) is able to be fitted into the feature area of the image. The system can be extended into two dimensions by further circuits, some of which is shown on Fig. 1 providing an "effective" regular octagonal inspection shape Fig. 2 (not shown). The number of times that this octagonal shape fits into the feature can be counted. The octagonal inspection shape is achieved by means of three counting circuits (only two shown) formed from shift register memories 34, 34' whose inputs are connected to its outputs via an adding stage 38 and a subtractive stage 40. One 35 of the shift registers is designed to provide a delay of one scan line duration to produce the "vertical erosion" part of the octagonal shape. Whereas the other two registers are designed to provide a delay of one line scan duration plus or minus one "picture point" in order to dilate or erode the inspection shape that is, provide the sloping portions of the octagonal shape. The description includes an alternative logic system Figs. 3-12 (not shown). Also in this system the equivalent to counter 26 counts "down" from a fixed member N instead of up to N. The alternative system therefore uses less complicated elements since the erosion or dilation techniques performed on the output from the comparator 30 are designed to count down from a predetermined number to  tell when a particular erosion process has been completed (assuming a picture point being absent).
Patent GB-609841-A (GB)
Title: Improvements in or relating to the production of organo-silicon compounds
IPC: C07F7/08
Filed: 1946-04-14
Abstract: In an example ethyl silicate prepared from a silicon tetrahalide and ethyl alcohol containing about 5 per cent of water, ethyl chloride and magnesium are reacted in a vessel to which the reactants are added continuously, and the reaction products are withdrawn and hydrolysed by heating with sulphuric acid to yield silicone polymers.ALSO:Organo-silicon compounds are prepared by a continuous Grignard process by passing a silicon tetrahalide or an alkyl, aryl or aralkyl silicate and the organic halide required to form the Grignard reagent, e.g. ethyl chloride or bromide, through a reaction vessel containing magnesium.  Preferably, one of the substances passed through the reaction vessel is a vapour, and the vapour and liquid are passed in counter-current.  The reaction rate may be retarded by dissolving the silicon tetrahalide or silicate in a high boiling point solvent, e.g. toluene or its homologues.  In an example, ethyl silicate prepared from a silicon tetrahalide and ethyl alcohol containing about 5 per cent of water, ethyl chloride and magnesium are reacted in a vessel to which the reactants are added continuously, and the reaction products are withdrawn and hydrolysed by heating with sulphuric acid to yield silicone polymers.
Patent GB-664932-A (GB)
Title: Improvements in dust free spray painting
IPC: B05B16/60
Filed: 1949-03-24
Abstract: <PICT:0664932/III/1> <PICT:0664932/III/2> A device for dust-free spray painting is characterized by a spraying box the interior of which communicates with an inlet and outlet for air oppositely disposed to each other whereby ventilation means may blow air therethrough, there being a place between said inlet and outlet for the spraying process, and an aperture in the box for insertion of the article to be sprayed. Referring to the drawing, spray box 26 has an air outlet 2 carrying a pressure fan blower 1 and dust separator 3, so that dust-free air passes to outlet 6 carrying pigment separator 5. Workpieces 15 on carriage 11 and covered by cover 13 are pushed through scuttle 10 and moved by hand on to turntable 8 where they are sprayed.  A modification, Fig. 4, contains drying ovens 19 and 20, valves 22 and 23 in the inlet and outlet and an exhaust fan blower 18 at the outlet 6.  An automatic feeding device may be used to convey the workpieces through the apparatus.
Patent GB-582242-A (GB)
Title: Improvements in or relating to the processing of dehydrated foodstuffs
IPC: A23L3/36
Filed: 1943-05-21
Abstract: Dehydrated foodstuffs, such as vegetables, fruits, nuts, cereals, meat, fish, milk, eggs and cake or pastry preparations, in the form of powder, shreds, flakes or other loose particles are refrigerated at a temperature, e.g., from about 32 DEG F. to -45 DEG F., at which the foodstuff will remain substantially non-fluid under the pressure to which it will be subjected and then subjected to a pressure, e.g., from 1,000 to 2,500 lbs./sq. in., only sufficient to bind the particles into a compact non-corneous integrated unit.  The pressure is preferably applied slowly, the compression stroke of the ram or piston being less than the major dimension of the resultant unit. The moisture content of a highly dehydrated foodstuff, such as a cereal breakfast food, may be increased to around 6 or 7 per cent. before refrigeration as by spraying or subjecting it to a humid atmosphere.  The compressed unit is preferably sealed in a moisture-proof wrapper, e.g., of waxed paper, cellulose acetate, the materials known under the Registered Trade Marks "Cellophane" and "Pliofilm" or the latter laminated with asphalt-impregnated paper.
Patent GB-1363014-A (GB)
Title: Excavating machines having telescopic columns
IPC: E02F3/413
Filed: 1972-02-22
Abstract: 1363014 Grab excavators; augers B CASAGRANDE 22 Feb 1972 [18 March 1971] 8134/72 Heading E1F A grab or drill-mounting telescopic column supported on a self-propelled chassis comprises at least three co-axial elements fitted within one another so as to provide an outer, an intermediate and an inner element 5, 9, 11 capable of sliding relative to one another. The outer element 5 is adapted for attachment to a jib 2 on the chassis and is provided with drive means, preferably winch 15 and cable 16 secured at 17, 19 to the intermediate element 9, for causing the element 9 to move axially of the outer element 5. A cable 21 of fixed length is attached at each end 25, 27 to the outer element 5 and at an intermediat point 23 to the inner element and extends around the ends 22, 28, preferably about pulleys, of the intermediate element 9. With such an arrangement of cable 21 movement of the intermediate element 9 relative to the outer element causes the inner element to move relative to the intermediate element through a distance twice the distance moved by the intermediate element.
Patent GB-622716-A (GB)
Title: Improvements in or relating to machines for manufacturing rolls of paper or like material of definite lengths
IPC: B65H19/22
Filed: 1947-03-26
Abstract: 622,716. Winding webs. DRENT, H. H. March 26, 1947, No. 8223. Convention date, April 1, 1946. Addition to 612,878. [Class 100 (i)] The machine for cutting off measured lengths of paper &c. from a web and winding them to form rolls as described in the parent Specification is constructed with modified means for winding and delivering the measured rolls. The end of a cut web is received in slots 87 in a pair of winding rods 88 which meet at 89 as the leading edge of the web enters the slots 87. The rods 88 are similarly mounted and supported from a side frame 1, only one of which is shown. To wind up the web, the rods 88 are driven by gears 114, 116 operated by a shaft 115 driven by sprocket-wheels 117, 118, the wheel 118 being driven intermittently by a friction clutch 119 from a shaft 57. At the end of the winding operation the gears 116 are stopped by a spring- catch 128 which engages one of two diametrically opposite slots 126, 127 in the gear 116, so as to leave the slots 87 in alignment with the leading edge of the web. The winding rods 88 are then moved laterally so as to free the wound roll and permit it to fall on a delivery table. The rods 88 are splined to their driving-gears and can also slide in bearings 90, each rod 88 being connected by a rod 93 to a sliding rack 94 which is geared by gears 95, 96 to a sliding rack 98, the reciprocating motion of which is magnified by the gears. The racks 98 for the two rods 88 are operated by a common mechanism comprising a pair of levers 99 operated from an eccentric 105 which is driven by a disc 107 when a pawl 111 is released by a detent pin 112 from engaging an internal gear-wheel 110 on a freely mounted chain-wheel 108. The pin 112 is normally controlled by a cam 113 to hold the pawl clear of the gear, and is moved to release the pawl by a lever 56 similarly actuated to the corresponding lever 56 in the parent Specification. This mechanism comprises a control wheel 23 geared to the measuring drum, and a releasable weight 43 which actuates a chain 50 for operating the cutting-mechanism, all as described in the parent Specification, and a cam 135 on the shaft 97 of the gear 23 operates mechanism for throwing in the clutch 119, and for raising the spring-catch 128.
Patent GB-1132497-A (GB)
Title: Improvements in servo-steering systems for automobile vehicles
IPC: B62D6/00
Filed: 1966-02-24
Abstract: 1,132,497. Steering vehicles. ANDRE CITROEN S.A. 24 Feb., 1966 [16 March, 1965], No. 8225/66. Addition to 1,002,557. Heading B7H. In order to overcome unsteadiness in the return to straight-ahead position in the power assisted steering mechanism of Specification 1,002,557, wherein a cam follower acting upon a cam geared to a motor vehicle steering shaft is subjected to a variable-pressure fluid circuit in order to create steering resistance, a return-flow restriction valve is included in the circuit. In one embodiment, a steering movement causes the cam follower to move a piston against the pressure exerted in the fluid circuit, the fluid moving through an orifice controlled by a spring-loaded clapper valve. The clapper valve is urged against its seating during the return movement, and has a calibrated orifice allowing restricted fluid flow. In a modification, Fig. 2, the clapper valve 31<SP>1</SP> closes an orifice 34<SP>1</SP> and a slide valve 35 having a calibrated orifice 36 is acted upon by the pressure in the fluid circuit 11 and by a spring 38 and co-operates with an orifice 39 in a chamber 37. During the steering movement, fluid flows through orifice 34<SP>1</SP>, and during the return movement, the return flow through orifice 39 is throttled by the slide valve 35. In a further modification, Fig. 3, the slide valve comprises a fixed member 42 and a slide 43 acted upon by a spring 45 whose other end acts upon the piston 46. The orifice 49 through the fixed member 42 includes a baffle portion 47 which is closed during steering movements. Return flow is through the orifices 49 and 44 and is restricted by the baffle 47 and the pressure upon piston 46 during a return movement to straight-ahead steering is due to spring 45.
Patent GB-1135086-A (GB)
Title: Suspension copolymerization process
IPC: C08G2/00
Filed: 1966-02-24
Abstract: 1,135,086. Trioxan - olefinic monomer copolymerization. ETHYL CORP. 24 Feb., 1966 [24 Feb., 1965], No. 8259/66. Heading C3P. Trioxan and anolefinically unsaturated comonomer are copolymerized in the presence of a catalyst and in suspension in an inert liquid which is a saturated aliphatic hydrocarbon, a saturated cyclic hydrocarbon or a saturated fluorocarbon. Suitable comonomers are mono-, di- or tri-olefins (including cyclic olefins), vinyl esters, acrylates, methacrylates, vinyl ethers, acroleins, acrylic acid, acrylonitrile, vinyl and allyl halides, various monovinyl aromatic compounds, and norbornylene. Suitable catalysts are Lewis acids, e.g. aryl diazonium. hexafluorophosphate or PF 5 , (which may be complexed), Zeigler-type catalysts, or heterogeneous, e.g. metal oxides, acid clays or ionexchange resins. The copolymers may be aftertreated with an "end-capping" agent, e.g. acid anhydride, isocyanate or etherification agent and/or base stabilized. The examples relate to the copolymerization of trioxan with norbornylene, styrene, 1,3- and 1,5-cyclooctadiene, cyclododecene, vinyl cyclohexene, 1,7-octadiene, 1,5,9-cyclododecatriene, and vinyl toluene, using PF 5  as catalyst and the following suspending media: cetane, a paraffin wax, C 15 - C 18  n-paraffin, a commercial paraffinic hydrocarbon oil, perfluorokerosene, (C 4 H 9 ) 3 N, C 2 F 4  Cl 2  and perfluorocyclobutane
Patent GB-558105-A (GB)
Title: Improvements in or relating to the sharpening of drills
IPC: B24B3/24
Filed: 1942-06-17
Abstract: 558,105. Sharpening twist drills. BRITISH UNITED SHOE MACHINERY CO., Ltd., and RICKS, F. June 17, 1942, No. 8264. [Class 60] A drill is sharpened by means of a grinding- wheel which is driven with a planetary motion, the drill being moved in a straight line or an arc to positions where the wheel grinds first one and then another cutting edge. In one form the wheel 23 is carried on an arm 11 driven by hand, the wheel shaft 13 being furnished with a pinion 17 meshing with a fixed internal gear 21. The drill is mounted in one of a number of appropriately sized cross holes in a carrier comprising a pair of discs 27, 29 and secured by a screw 39 which also secures the carrier against rotation. The drill abuts against a gauge 25 and the face of the disc 29 is fitted with strips partially obstructing the holes therein whereby the drills can only be inserted in correct.position. The carrier is mounted on a slide 33 having a depending, slotted arm 43 engaged by an adjustable cross stud 47 carried by an arm 51 on a shaft 53 with a second arm 55 operated by a cam track in the fly wheel 7. The machine can be locked for setting the drill by a cranked pin 61 passing through holes in the frame and entering a hole in the fly wheel. In another form the grinding-wheel is rotated on its axis by power and moved round its orbit by hand, the carrier for the drills being mounted on a pivoted member which is moved from side to side by hand, an adjustable stop limiting the throw.
Patent GB-1026214-A (GB)
Title: Improvements in sheet guiding apparatus
IPC: G03G15/00
Filed: 1963-03-01
Abstract: 1,026,214. Electrophotographic apparatus. RANK XEROX Ltd. March 1,1963 [March 1,1962], No. 8273/63. Heading G2H. [Also in Division B6] The xerographic apparatus illustrated in figure 1 (not shown) includes a sheet conveyor comprising grippers carried by two parallel endless chains and a guide member 55 pivoted between the endless chains for guiding a sheet. Said guide member 55 is pivoted at 53 between two spacers 52 fast with a shaft 50. The latter supports a pair of sprockets around which the endless chains pass. An arcuate portion of the guide member 55 is coincident with the pitch circle of the sprockets. Spring means or a counterweight 56 urge the guide member to the position shown. In operation, the guide member is pivoted by the grippers 27 to allow them to pass around the sprockets and then return to its normal position to form a guide for a sheet trailing behind the grippers.
Patent GB-411998-A (GB)
Title: Improvements in or relating to mountings for railway vehicle wheel axles
IPC: B61F5/32
Filed: 1933-03-20
Abstract: 411,998. Railway - vehicle under - carriages. SENTINEL WAGGON WORKS, Ltd., and ALLEY, S. E., 20, Iddesleigh House, Caxton Street, Tothill Street, London. March 20, 1933, No. 8416. [Class 103 (vi).] In a railway vehicle axial movements of the wheel axles relative to the underframe are damped by the provision between the axle ends and the underframe of buffering devices 26 that do not interfere with the vertical play of the axles and are associated with long tie-bolts 28 extending through the underframe and adapted to rock in a vertical plane. In the arrangement shown, the axle-box 12 is provided with horizontal arms 21 extending parallel to the underframe 15 and formed with horizontal grooves 22 adapted to serve as rocker bearings for the face plates 24 of the buffers. Extending through the buffers, through the ends of the arms 21, through tubes 32 in the frame 15 and through plates 30 closing the inner ends of the tubes 32 are the tie-bolts 28 which, at their inner ends are fitted with projections 33 adapted to rock in horizontal grooves 31 on the plates 30. Thus, as the axle 11 moves vertically in the guides 14, the bolts 28 undergo a tilting movement within the tubes 32, while horizontal displacements of the axle are damped by the buffers 26.