baber/WOPTO huggingface dataset:
Patent GB-761467-A (GB)
Title: Improvements in profile cutting machines
Inventor: HARRISON JOHN ANTHONY PETER
IPC: B24B9/14
Filed: 1953-11-25
Abstract: 761,467. Profile grinding machines. PADSPECS, Ltd. Nov. 25, 1954 [Nov. 25, 1953], No. 32656/53. Class 60 A profile grinding machine comprises a rotatable tool 12 Figs. 1 and 2, a rotatable workpiece holder 51, the tool and the holder being mounted for relative displacement with respect to each other, a former 41 having the shape which it is desired to impart to the workpiece, and abutment means 62 adapted to co-operate with the former, the abutment means and former actuating operating mechanism for causing the holder 51 to rotate whereby the workpiece is only rotated when the former and abutment are in engagement and has the desired shape imparted thereto during the course of a single revolution thereof. The workpiece is held between two shafts 19A, 19B mounted in a holder 18 adapted to pivot about a shaft 29 which is connected to the shafts 19A, 19B by toothed gearing and connected to a motor 20 by a universal joint 37 and a spring-loaded clutch 38. A spring 22, the tension of which may be adjusted by a handle 26 having a number of holes for engagement with the base of the machines, holds the workpiece against the grinding wheel 12. When sufficient material has been removed from the workpiece for the former 41 to contact the abutment 62 the motor 20 is energized through an amplifier 68 and a relay to rotate the workpiece until the contact between the abutment and the former is again broken. The position of the abutment 62 may be adpusted by a handle 64 in accordance with the amount of material to be removed from the workpiece. To prevent localized wear of the tool 12, which may/ be a diamond impregnated. wheel, the workpiece holder is mounted on a slide 31 so that it can be displaced by a handle 69. The machine may be used for grinding cams, plastic or pottery articles or lenses. In the latter case, a lens-loading means consisting of two pivotally connected arms 53, 54, Fig. 8, loaded by a spring 57 and terminating in U-shaped portions 44, 48 is employed to locate the lens correctly on a disc 46 provided with a resilient cushion 47, the disc being provided with holes 50 to engage pegs 43 on the shaft 19A of the machine. Specification 618,169 [Group XIX] is refered to.
Patent GB-868260-A (GB)
Title: Improvements in or relating to air-blast circuit-breakers
IPC: H01H33/867
Filed: 1958-10-14
Abstract: 868,260. Air blast circuit breakers. ZAVODY V.I. LENINA PLZEN, NARODNI PODNIK. Oct. 14, 1958 [Oct. 14, 1957], No. 32740/58. Class 38 (5). The movable contact nozzle 1 of a circuit-breaker has a number of nozzles 3 which vent through the ports 11 when the nozzle is moved into its upper, open-circuit position, thus allowing compressed air in the circuitbus-bar case to extinguish the arc. A coacting slide 4 is moved downwardly by the pressure of the escaping air acting on the piston 5 and the skirt 4 blocks the vents 7. When the contacts close and cut off the air blast, the vents 7 allow the piston 5 to retract quickly from the position in which the slide 6 blocks nuts 3 of nozzle 1.
Patent GB-1269939-A (GB)
Title: Improvements in and relating to the hot or cold rolling of strip or plate
Inventor: SABATINI BRUNO
IPC: B21B37/64
Filed: 1968-07-09
Abstract: 1,269,939. Rolling. BRITISH IRON & STEEL RESEARCH ASSOCIATION. 4 July, 1969 [9 July, 1968], No. 32756/68. Heading B3M. [Also in Division G3] In a method of and an apparatus for rolling strip or plate material -the total rolling force during rolling is sensed and means for applying roll-bending forces and moments to the rolls are automatically adjusted an proportion to changes in the total rolling force to maintain the profile of the rolled material substantially constant. The apparatus comprises a four high roll stand having work-rolls 2 and backup rolls 3, the total rolling force F is applied by rods 7 to chocks 4 and is measured by a load-cell 8 which is connected to a computer C. The work-rolls 2 have a pair of jacks 11 acting on each one of-two chocks 10 axially spaced along the necks of-each workroll which provide the roll bending forces J and moments M which are also transmitted to the computer C. Profile parameters P*, Cl* related to the thickness of the strip at various distances from the centre line of the strip S are measured by a means 20 such as is described in Specification 1,231,008 and compared with the parameters P, Q, of the desired strip profile. When the desired profile is attained values of F*, J and M corresponding to that profile are stored in the computer. The measured values of J and 'M (J* and M*) are varied to compensate for any variation in the measured value of F (F*), thus maintaining the profile. Thereafter the values of J and M are varied to compensate for any variation in the measured total rolling force F* so that the strip -profile is maintained constant.
Patent GB-462894-A (GB)
Title: Improvements in steam generating systems utilising waste heat
IPC: F22B1/18
Filed: 1936-11-30
Abstract: 462,894. Heating steam boilers by waste gases. SPANNER, E. F. Nov. 30, 1936, No. 32792. [Class 123 (ii)] A waste-heat boiler A supplying steam to a main J is fed with water from a direct-fired boiler B by a pump C controlled in accordance with the water level in the boiler A, and steam is blown-off from the boiler A into the water space of the boiler B through a valve F which is loaded to open at a slightly lower pressure than the blow-off pressure of the safety valve K.
Patent GB-277842-A (GB)
Title: An improved liquid separator
IPC: F16T1/24
Filed: 1926-12-28
Abstract: 277,842. Kuhn, J. Dec. 28, 1926. Steam traps.-In a liquid separator, a float e is carried by an arm f pivoted at g, and the end of the arm is bifurcated and adapted to move a slide valve i over its seating k. In Fig. 2, the valve m has one opening, and the seat n two openings. The seating k may be a separate member fitted into a holder h which is secured to the casing by studs o, and the holder h also provides the fulcrum for the float lever. The part of the casing on which the seating k is mounted is made oblique so that it may be more readily machined.
Patent GB-878791-A (GB)
Title: Improvements in and relating to concrete containers
IPC: E04H7/28
Filed: 1959-09-28
Abstract: 878,791. Storage structures. LINDSAY, R. A. G. Sept. 28, 1959, No. 32846/59. Class 20(1) [Also in Group XXIX] A storage structure comprises a wall formed of curved concrete slabs 6 separated by uprights 8 opposite pairs of which are joined by posttensioned wires, rods or bars 10. The wires &c. 10 may be cast within a concrete base. A square section container covered by a roof of curved slabs is also described.
Patent GB-674864-A (GB)
Title: Improvements in and relating to automatic electric circuit breakers
IPC: H01H73/30
Filed: 1948-12-20
Abstract: 674,864. Automatic circuit-breakers; switches held set and freed mechanically. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 20, 1948. [Dec. 19, 1947] No. 32866/48. Class 38 (v). In an automatic circuit-breaker an insulating base 20 carries brackets 21 ... 23, bracket 21 supporting a spring member 24 carrying a contact 30 co-operating with a contact 35 on a spring blade 34 supported on bracket 22 which also forms one terminal. Also supported by bracket 21 is a bimetallic member 31 having its free end secured to one end of a heating element 38 supported at its other end by bracket 23 which constitutes the other terminal. Start and stop buttons 12, 13, respectively, project through a cover 10 and are urged upwards by a spring member 14. Button 12 has a projection 18 engaging blade 34 in the "off" position, Fig. 1, and when depressed, in addition to pressing down said blade, it carries member 24 with it, the contacts remaining separated. Meanwhile a latch plate 33 on the end of the bimetallic element springs forward over member 24 to hold it on release of button 12. Upon said release, blade 34 rises and the contacts are closed. To open the contacts normally, button 13 is depressed causing an edge thereof to force latch plate 33 laterally away from member 24. Should an overload occur, heat conductively transmitted from heater 38 to element 31, plus a small amount of self-heat, results in lateral movement of latch plate 33 to release member 24. Cooling of element 31 is rapid since it has received a negligible amount of heat by radiation and is therefore able to radiate to the walls of the cover. Cooling is also assisted by the heater after it has cooled to the temperature of the element since it is constructed with a greater surface area. The current shunting effect produced by the latch plate 33 contacting member 24 is practically eliminated. by coating member 24 with a low conductivity metal oxide. A notch 29 in the end of member 24 and positioned a predetermined distance from the side edge thereof adjacent the element 31 provides a calibrating means, it being only necessary to align said notch and each plate 33 once the position of the notch has been calculated to obtain a particular setting.
Patent GB-327985-A (GB)
Title: Diaphragms for acoustic instruments
IPC: H04R7/04
Filed: 1928-11-10
Abstract: 327,985. Goldschmidt, R. Nov. 10, 1928. Diaphragms; magnetic instruments. - A diaphragm for acoustic instruments having a rigid edge or an edge clamped firmly at its periphery between clamping rings B, Fig. 1, has immediately within the clamped zone a zone F of frustoconical shape and within the frusto-conical zone a central portion M<2> which is only slightly dished or is substantially flat. The diaphragm may be of iron or mild steel and the clamping rings B are preferably of the same material to prevent changes due to variations in temperature. The rings B are provided with circumferential grooves to attain firm clamping. The diaphragm is preferably pressed to the shape M<1> (shown full) after clamping, the edge J being made as sharp as possible. Pressure is then applied from below thus permanently raising the portion M<1> to the final form (shown dotted) in which the portion M<2> is flat or only slightly dished or vaulted. The restoring force of the diaphragm is less for an upward displacement than for a downward displacement, thus allowing a small air gap between the diaphragm M<2>, Fig. 3, and the electromagnet.
Patent GB-1526433-A (GB)
Title: Helicopter rotor blades
IPC: B64C27/473
Filed: 1975-08-06
Abstract: 1526433 Helicopter rotor blade construction DEFENCE SECRETARY OF STATE FOR 6 Aug 1976 [6 Aug 1975] 32943/75 Heading B7W A helicopter rotor blade 10 formed over a substantial portion of its span from composite material (i.e. glass or carbon fibres embedded in a matrix) has a number of the fibres 12 diverted inwardly at at least one spanwise position towards a spanwise neutral bending plane. As shown on Fig. 3 fibres 12 are diverted from top and bottom regions 14, 15 of the blade towards the spanwise neutral flapping plane 13 at positions 16, 17, 18. Fibres can also be diverted from the leading and trailing edge regions 20, 21 towards the spanwise neutral lagging plane 22. The effect is to reduce the stiffness at the positions 16, 17, 18 without reducing the strength of the blade and the degree of reduction can be varied by varying the number of fibres which are diverted or by varying the amount they are diverted.
Patent GB-781486-A (GB)
Title: Improvements connected with capacity change weight depositing mechanism for weighingmachines
Inventor: SHORT WILLIAM HENRY
IPC: G01G1/26
Filed: 1954-11-13
Abstract: 781,486. Weighing apparatus. ASHWORTH ROSS & CO., Ltd. Nov. 11, 1955 [Nov. 13, 1954], No. 32949/54. Class 143 A capacity change weight depositing mechanism for a weighing machine is provided with superposed capacity change weights 1-4 each of which is independently supported by ears 7 and rods 6 from a common carrier bracket 5 which is moved along guides 13 by a motor driven screw and nut mechanism 8, 8a, 11, 12. The desired weight or combination of weights is deposited on platform 16 by the operation of push buttons in a motor control circuit (Fig. 3, not shown) in which are incorporated limit switches provided with V-shaped operating arms 15 which co-operate with a projection 14 on the carrier bracket 5.
Patent GB-798288-A (GB)
Title: Improvements in and relating to band clamps
IPC: F16L23/10
Filed: 1956-10-29
Abstract: 798,288. Band clamps. AEROQUIP CORPORATION. Oct. 29, 1956 [April 24, 1956], No. 32969/56. Class 44 A band clamp for coupling flanged members 15, 15 comprises in combination, a plurality of retainer segments 10 for collectively encircling and embracing a pair of abutted flanges, the segments being of channel section and including an apex 18, and a foot 19 extending axially outwardly from each of the respective fans 17 at its inner margins, a constrictor band 11 for drawing the segments radially inwardly, the band encircling the segments outwardly of the apexes thereof, connector means for drawing the ends of the band together, and a plurality of yokes 12 each including a pair of laterally spaced legs 20 bearing against respective feet of a retainer segment, a pair of shoulders 22 extending outwardly from the respective legs, return bands 23 joined to the outer extremities of the shoulders, and a bridge 24 joining the return bands and overlying the band 11, the extremities of the bridge co-operating with the shoulders and return bands to provide opposed guide loops in which the respective margins of the band are slidably retained. The band 1, may ,as shown in Fig. 3, bear on the apex 18 of each segment with the interposition of ball-bearings 25, or as shown in Fig. 6, with the interposition of rollers 27 which are biased toward one limiting position determined by stops 28, by springs 29 anchored to the segment 10.
Patent GB-1157933-A (GB)
Title: Slave-Flash Unit
Inventor: CASEBEER ORAN TAYLOR
IPC: G03B15/04
Filed: 1966-07-22
Abstract: 1,157,933. Flash photography. EASTMAN KODAK CO. July 22, 1966 [July 23, 1965], No.33021/66. Heading G2A. A slave-flash unit for supporting a plurality of bulbs has means for connecting each bulb, one at a time, into a normally inoperative firing circuit which is rendered operative for firing the connected bulb by photo-electric means in response to a predetermined increase in ambient light caused by the firing of the master flash unit, actuating means responsive to the firing of the bulb which cause another bulb to be connected into the firing circuit, and reset means for rendering the firing circuit inoperative until the circuit is once again rendered operative by the photoelectric means. As shown in the Figs., the unit has a socket 11 for a flash-cube 12 and has a photo-cell 13 mounted on a rotatable cylinder 14 which is pointed at the main flash unit. The socket 11 is mounted on a rotatable post 25 carrying a slotted disc 26 and a cam disc 27 and is biased for counter-clockwise rotation by a spring 28, but is normally prevented from rotating by a pin 37 which engages one of the abutments 33 to 36 in the slot 32 of disc 26. The pin 37 is mounted on one end of a lever 38, the other end of which supports a pivoted permanent magnet 44 which is attracted to a normally de-energized core 42 of a solenoid 43. Solenoid 43 together with photo-cell 13 and silicon controlled rectifiers (63) and (65) are connected into the circuit containing one bulb 17 of the flash cube 18 Fig. 5, (not shown) via contacts 47, 48, which are closed by one of the lobes 49 on cam disc 27 when the flash cube is in the firing position, and contacts 50, 51 which are closed when a flash-cube is inserted in socket 11. The circuit also contains a lamp 16 which is illuminated when an unused flash-cube bulb is connected into the circuit. When cell 13 is illuminated by the firing of the master flash unit, a voltage pulse is produced which triggers rectifiers (63) and (65) to their more conductive states, this first causes the connected bulb 17 to fire, and then causes solenoid 43 to be energized thus repelling magnet on lever 38, releasing pin 37 from one of the abutments 33 to 36, and thus allowing the socket 11 and flash-cube 18 to rotate; this rotation causes lobe 49 to release contact 48 thus opening contacts 47, 48 which causes the rectifier (63) and (65) to revert to their non-conductive states and deenergizes solenoid 43 so that pin 37 engages the next abutment 34 to 36. By this means the flash cube is rotated through 90 degrees connecting the next bulb 17 into the firing circuit, and the next lobe 49 again closes contacts 47, 48 to reset the circuit. Reference has been directed by the Comptroller to Specifications, 968, 932 and 1, 034, 909.
Patent GB-809739-A (GB)
Title: Filter for gases and liquids
IPC: B01D29/01
Filed: 1957-10-23
Abstract: 809,739. Gas filters. POELMAN, A. J. J., and ETABLISSEMENTS R. SCHNEIDER. Oct. 23, 1957 [Oct. 24, 1956], No. 33086/57. Class 8(2). [Also in Group I] A sheet of paper 1, Fig. 3, is folded into parallel and uniform folds, and at least one side of the sheet is provided with streaks of adhesive, or threads coated with adhesive 2, after which the folds are closed up, whereupon the adhering threads 2 serve to space the folds and secure them (e.g. as described in Specification 763,917). Circular " cakes " of the sheet are cut out by a rotating, axially-movable cutter 4, Fig. 1, and the " cake " 6 is located between cheek-plates 8, 8a, Fig. 6, each having an annular reduced portion 10 or 10a, within a sleeve 9. A suspension of a plastic material having little tendency to contract on setting (e.g. poly-vinyl chloride) is then run into the space between 6 and 9 forming, when set, a mounting 7.
Patent GB-898356-A (GB)
Title: Heat resistant fibrous products of aluminium silicate fibres and carrier fibres and method of making the same
IPC: D04H1/42
Filed: 1958-10-16
Abstract: 898,356. Fibrous products; woven fabrics. CARBORUNDUM CO. Oct. 16, 1958 [Oct. 24, 1957], No. 33111/58. Drawings to Specification. Classes 120(3) and 142(4) [Also in Groups VIII and XXV] Fibrous or textile products are made from a blend of fibres consisting by weight of between 10 and 95% of fibres of an aluminium silicate, the remainder being other fibres that will carry the silicate through a carding machine. The carrier fibres may be acrylic, cellulosic (including rayon) protein, cotton, wool, asbestos, glass, nylon, tetrafluoroethylene, polyamides, and vinyls; the aluminium silicate may contain up to 50% of oxides such as zirconia, thoria or boron oxide, and the products are particularly suitable for high temperature applications and may be woven, non-woven or knitted in such forms as herringbone weave cloth, tubular woven fabric, laminating and other paper, batts, felt, yarn, cords and ropes, reinforced in some cases with inserts of yarns of glass, asbestos or alloy wire; blankets, furnace curtains, fire-screens, heat-insulation, gasfilters, laundry cloth packings and lagging are given as uses. Particular percentages of silicate by weight the rest being asbestos in each case, with the temperature ranges in degrees Fahrenheit for which they are suitable are: for 1000-1400, 10-40%; for 1400-1800, 40-60%; for 1800-2300, 60-90%. A blend of 15-30% silicate with rayon is also mentioned. Specifications 852,146 and 898,357 are referred to.
Patent GB-212300-A (GB)
Title: Improvements in thread controlling devices for sewing machines
IPC: D05B63/00
Filed: 1922-12-06
Abstract: 212,300. Thompson, W. P., (Union Special Machine Co.). Dec. 6, 1922. Chain-stitching and double loop stitching; multiple - needle machines, - A rotary device for controlling looper thread is arranged to take up slack after the point of the loop has entered the needlethread loop the slack being held and gradually given up as the looper moves to the end of its stroke. The control comprises a guide-wire 17, spring nippers 18 and guide-eyes 19, 21 in wires 20, 22 which direct the thread across a pair of discs 23, 24 mounted on a sleeve 25 on the main shaft 15. As the part a, b of the coin-discs engages the thread a stripper finger 27 raises the thread over the nose b and it is then detained on the surface b, c by a finger 29 till the point c is reached the looper meanwhile entering well into the needle-loop. At the point c the thread falls below the finger 29 and rests on the radially-diminishing part d a which gradually gives up slack. At the point a the looper starts back and slack is taken up by the rise a, b. The form of the cam at c allows reverse movement without fracture of the thread. The sleeve 25 is secured by a screw located between the cam-discs and covered by a spring member 30 held against rotation by a post 32 between its arms. The take-up is described in connection with a machine having two needles and two loopers 9, 10 making similar stitches and actuated in known manner by a rocker 13 and link 16.
Patent GB-863394-A (GB)
Title: Method for the separation of aromatic, especially high aromatic and carcinogenous, hydrocarbons
IPC: A24D3/14
Filed: 1958-10-17
Abstract: Aromatic hydrocarbons, particularly polycyclic, and carcinogenous hydrocarbons, are separated from liquids, smokes and gases by selective adsorption on a polyaryl silicone.  The Polyaryl silicone may be used as flakes, powders, granules or supported on cellulose, or may be in the form of polyhydroxy compounds treated, e.g. etherified or esterified, to introduce arylsilyl groups, the polyhydroxy compound being for example alumina, silica gel or cellulose; a suitable arylsilyl group is triphenylsilyl.ALSO:Cigarette filters which remove carcinogenous hydrocarbons from tobacco smoke are made of polyaryl silicones or polyhydroxy compounds etherified or esterified with arylsilyl groups. The material may be a support such as cellulose impregnated with a polysiloxane substituted with phenyl and methyl groups or alumina, silica gel or cellulose etherified with triphenylsilyl.
Patent GB-497879-A (GB)
Title: Improvement in stabilized vinyl resins
IPC: C08K5/57
Filed: 1937-12-02
Abstract: Vinyl resins are stabilized by intimately dispersing therein from about 1/2 to 3 per cent by weight of an organo-metallic aryl and/or alkyl compound of lead and/or tin.  The vinyl resin may be an interpolymer of vinyl chloride and vinyl acetate, the alkyl radical may be any of the propyl, butyl, or amyl groups, and the aryl radical may be phenyl, tolyl, xylyl or naphthyl. Specified lead and tin compounds are (C3H7)4Pb; (C3H7)4Sn; (C6H5)4Pb; (C6H5)4Sn; (C3H7)(C6H5)3Pb; (C3H7)(C6H5)3Sn; (C3H7)2(C6H5)2Pb; (C3H7)2(C6H5)2Sn; (C3H7)3 (C6H5)Pb; (C6H6)3PbOH; (C3H7)(C6H5)2PbOH; (C6H5)2PbO; (C6H5)3SnOH; (C3H7)(C6H5)2 SnOH; (C6H5)2SnO and salt derivatives of the type formed by reaction of the above hydroxide compounds with stearic, oleic, or other acids derived from fatty oils.  Solvents, plasticizers, pigments and other modifying materials may be added to the resins.