baber/WOPTO huggingface dataset:
Patent GB-716213-A (GB)
Title: Improvements in or relating to machine for fabricating capsules from elastic films
IPC: A61J3/07
Filed: 1952-03-27
Abstract: Liquid gelatin flows from an oil-jacketed tank 306 thruogh an opening defined by a doctor blade 307 and a projection 316, on to a casting drum 308.  The tank is supported upon the edges of the drum by means of rollers 318,322, and may be rocked about rollers 318 as about a fulcrum, to raise or lower the discharge opening, whereby the thickness of the gelatin film may be varied.  The tank is rocked by turning a screw 328.  Another support for the tank is afforded by fixed slotted brackets 321 in which engage pins 319 on the tank.  A sheet metal hood may surround the <PICT:0716213/IV (a)/1> tank, and air of controlled humidity may be fed thereto.
Patent GB-980146-A (GB)
Title: Improvements in or relating to high pressure permanent moulding of articles from molten metals
Inventor: LAUTH CORLISS
IPC: B22D17/12
Filed: 1963-02-27
Abstract: 980,146. Casting - machines. MULTIFASTENER CORPORATION. Feb.27, 1963, No. 7881/63. Heading B3F. The mould cavity a dnan adjacent communicating reservoir are filled with molten metal, and the molten metal in the reservoir is forced under pressure therefrom into the mould cavity until solidification is complete. Metal is poured into a lower die assembly 11 which includes supplementary reservoirs 15, and the die assembly is completed by members 21, 30. The upper member 30 includes an overflow cavity 44 into which surplus metal flows as the dies close through a narrow gap 46 in which metal soon freezes to seal the die cavity. Molten metal is then expelled from the reservoir 15 into the mould cavity by pistons 16 actuated by cylinder 17. In a modification, Figs. 4, 6, metal is fed under pressure of an inert gas applied to a tank 60, to a shot chamber 57, the entrance to which is then sealed by a piston-actuated valve 65. The metal is forced from the shot chamber into a number of die cavities 53, each of which comprises a supplementary reservoir 70 from which metal is fed to the solidifying casting by a hollow piston 75.
Patent GB-1370693-A (GB)
Title: Circuits for driving liquid crystal devices
IPC: G09G3/18
Filed: 1971-09-06
Abstract: 1370693 Matrix displays RCA CORPORATION 6 Sept 1971 7896/74 Divided out of 1370692 Heading G5C A multi-segment liquid crystal device has a common electrode 10 fed with an alternating voltage in one phase and a plurality of electrodes 14, 18 supplied with alternating voltage selectively in the same or opposite phase. When the two voltages are in opposite phase an alternating potential exists across the associated segment of the crystal to energize it, and when the voltages are in the same phase there is no alternating voltage across the segment. As described, the common electrode may receive a unipolar alternating voltage VD and the other electrodes a voltage of alternating polarity. The choice of phase may be effected by an exclusive-OR circuit (Fig. 6, not shown) and in (Fig. 7, not shown) the crystal is arranged across a diagonal of a bridge arrangement of transistors. Figs. 1 and 2 (not shown) illustrate liquid crystal material between a common electrode and a series of electrodes in figure-of-8 arrangement, the material and electrodes being supported by and between two glass plates.
Patent GB-973940-A (GB)
Title: Bolt assembly for firearms
IPC: F41A19/13
Filed: 1963-02-27
Abstract: 973,940. Making firearm bolts; welding by pressure. OLIN MATHIESON CHEMICAL CORPORATION. Feb. 27, 1963 [March 12, 1962], No. 7910/63. Headings B3A and B3R. [Also in Division F3] A firearm bolt is formed from two sintered metal upper and lower sections 24, 25, one section being formed with raised projections 50-55 surrounded by recesses 56-61 into which excess metal of the projections flows when the projections are melted by resistance heating to fuse the sections together. The sections are located between presser plates 70, 71 provided with electrodes 74, 75 in contact with the sections 24, 25. Current is passed to melt the projections 50-55 and pressure is then applied to press the bolt sections into mating contact.
Patent GB-1130158-A (GB)
Title: Improvements in and relating to methods of manufacturing photo-sensitive semiconductor devices
IPC: H01L21/00
Filed: 1966-02-23
Abstract: 1,130,158. Photo-conductive device. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 23 Feb., 1966 [26 Feb., 1965], No. 7945/66. Heading H1K. A photo-conductive device, comprising a semi-conductor body having a PN junction wherein the concentration of dopants in one of the regions decreases towards the PN junction, is made by growing an epitaxial film of a semiconductor material of one conductivity type on a substrate of the same material and conductivity type and during and/or subsequent to the epitaxial growth diffusing the dopants from the substrate into the film, and then diffusing into the film surface a dopant to give a PN junction within the epitaxial film. A P-type Si wafer 1 doped with Al, is polished and etched and an epitaxial layer 2 grown thereon by the pyrolytic decomposition of SiCl 4 , H 2  and BCl 3 . During the deposition Al diffuses out of wafer 1 into layer 2, thus giving a dopant concentration gradient which may be modified by heating the device in an inert gas at 1250‹ to 1300‹ C. The device is then heated in N 2  and P 2 O 5  at 900‹ C. to give an N-type layer 3 to which an ohmic contact 4 is applied through a mask after removal of the oxide layer formed during the phosphorus diffusion.
Patent GB-1382935-A (GB)
Title: Earth working machine including scraper blade means
IPC: E02F3/815
Filed: 1973-02-19
Abstract: 1382935 Scraper blade earth workers LAYTON MFG CO 19 Feb 1973 [22 March 1972] 8039/73 Heading E1F A tractor towed earth working apparatus comprises a scraper blade 10 and wheels 32, 34 mounted at each end of the blade via power operated means 50 for raising and lowering the wheels relative to the blade; moreover the blade is formed in two sections 10a, b linked by a pivotal connection 12 and a ram 14 is provided to adjust the relative positions of the sections about this connection. In the embodiment shown each wheel is mounted on a bar 44 adjustably received within tube 42, and ram 50 acting on link arms 40 can swing the tube up and down about pivots 36. Each blade section is provided with an extensible side portion 20 which overlies the main blade and carries a side plate 24. A tube 28, secured to the side plate is movable by ram 30 within a guide tube 26 fixed to the blade. Stanchions 52, 54 extend forwardly from the blade and each stanchion is pivotally linked, at 76 and 78, to two arms 74, 80 which extend from a pivotal connection (82, Fig. 1 not shown) spaced forwardly of the tractor rear axle. A tractor lift structure 94 is attached to the arms 74 via a linkage which allows limited up and down movement independent of the lift structure. Two scarifier devices 56, 58 are provided on pivotal mountings and are operated by rams 65.  In a modified form of wheel mounting (Figs. 7-9, not shown) each end of the blade is provided with a double wheel assembly, one wheel arranged behind the other. Each assembly is pivoted to a bar which is itself pivoted to the rear of the blade, and a ram acts between each bar and the blade to raise and lower the assembly.
Patent GB-554782-A (GB)
Title: Improvements in or relating to thermostatically and manually controlled valves for gaseous or liquid fuels
IPC: G05D23/02
Filed: 1942-06-12
Abstract: 554,782. Thermostats. BRITISH BRASS FITTINGS, Ltd., and SALINGER, G. T. June 12, 1942, No. 8091. [Class 135] [Also in Group XXIV] A thermostat has the control point adjusted by screwing the valve seat towards or away from the valve member by means of a sliding connection between it and a rotary spindle, the connection being established outside the perimeter of the seat. In the Figure the seating face 12 is formed on a tubular member having a screw-threaded engagement with an interchangeable bush 16 screwed into the casing 3 and secured by a grub screw 17. A spindle 9 rotatably mounted in a cover 8 is provided with fingers 20 slidably engaging with the recesses formed between lugs on the perimeter of the valve seat. A spring 10 holds the valve member 6 against a spindle 7 bearing against a rod 5 of non- expansible material which in turn is secured to a tube of expansible material anchored to the casing. A graduated manipulating knob 22 is clamped by a thin nut 25 against a coned collar adjustably screwed and soldered to the spindle 9. The nut is covered by a cap 26.
Patent GB-336544-A (GB)
Title: Improvements in coke oven doors
IPC: C10B25/06
Filed: 1930-03-13
Abstract: 336,544. Gourley, H. March 13, 1930. Coke ovens.-For the purpose of reinforcing a coke oven door frame a, two or more transverse metal strips b are encased in the cast metal frame, below the inspection hole cover c.
Patent GB-453603-A (GB)
Title: Improvements in or relating to extensible articles of furniture
IPC: A47C17/22
Filed: 1935-03-15
Abstract: 453,603. Bed-settees ; tables. CAISLEY, E., The Cabinet Works, Bitton, near Bristol. March 15, 1935, No. 8109. [Classes 52 (ii) and 52 (iii)] In an extensible article of furniture such as a bed-settee or table, comprising an upper part adapted to be extended and a lower part d mounted on links b, c so as to be raised as the member l is extended, the upper part l is connected to the links b, c at each side by a single operating lever f only so that it can be tilted during the extending movement to allow the legs or feet p to remain in contact with the floor. The links b, c are pivoted at their upper ends to the part d and at their lower ends to fixed pivots, one link b , preferably curved at the lower end, is extended below its fixed pivot and connected by a link e to the lower end of the lever f, which swings on a fixed pivot g. Stops m. n to limit the motion are provided. Fig. 5 shows the construction applied to an extending table.
Patent GB-195390-A (GB)
IPC: C01B31/12
Filed: 1923-03-21
Abstract: 195,390. Farbenfabriken vorm. F. Bayer & Co. March 22, 1922, [Convention date]. Charcoal.-Active charcoal is manufactured by finely grinding peat or lignite, impregnating with a solution of a salt, such as ferric chloride, or of an acid. for example phosphoric acid, and pressing into threads or sticks so that after carbonization pieces of great rigidity result. In an example impregation takes place in a kneading machine and the pressing by extrusion through a thread press using 5 mm. dies. The mass is then dried, carbonized, and washed, dried, and sieved in the usual manner. The Specification as open to inspection under Sect. 91 (3) (a) contains no limitation as to the shape of the agglomerated material and further describes drying in a rotary furnace and carboniz ing in a muffle furnace or drying and carbonizing in a rotary furnace. This subject-matter does not appear in the Specification as accepted.
Patent GB-803596-A (GB)
Title: Improvements relating to vehicle friction-brake mechanism
IPC: B61H1/00
Filed: 1956-03-15
Abstract: 803,596. External shoe-drum brakes. CITROEN S.A., A. March 15, 1956 [March 19, 1955], No. 8147/56. Class 103 (1). In an automatic adjusting device for taking up wear of the friction linings in a friction brake, the hydraulic piston and cylinder actuator arrangement comprises a ratchet-toothed means for taking up wear which comprises a split resilient ring provided with internal teeth on external face and resiliently applied against the internal face of the cylinder which is provided with corresponding teeth; this ring being located in an annular throat or groove formed between the piston skirt and the cylinder wall, and a stop screwed on to the piston skirt and limiting movement of the piston into the cylinder by abutting the ring. In the external shoe-drum brake illustrated in which a peripherally grooved circular member 1. is frictionally engaged by brake shoes 5 trapezoidal in section and carried by levers 3 pivoted at intermediate points 4 to the vehicle frame and actuated by means of opposed pistons 7 acting in cylinders 8a, 8b which are slidably housed in a common sleeve 20 rigidly connected to the vehicle frame through bracket 21. The brake shoes 5 may be frictionally applied against the pulley 1 by oil under pressure being delivered through inlets (not shown) to actuated pistons 7 and levers 3 against the force of the return springs 23 or alternatively by actuation of cable 11 to actuate bell-crank levers 9a, 9b and move cylinders 8a and 8b in an axial direction to a limited extent to effect actuation of levers 3. The automatic wear adjustment mechanism illustrated on an enlarged scale on Figs. 8 and 9 comprises a set of ratchet teeth cut round the internal periphery of each cylinder 8a and 8b and engaged by corresponding ratchet teeth formed on the external periphery of split cylindrical ring 29 which, when at rest, abuts a stop 30 integral with body of piston 7; a clearance space is provided at the other end between split ring 29 and the shoulder 7a of the wall of the piston 7. On hydraulic application of the brake piston 7 is displaced in direction F1 with respect to the cylinder and shoulder 7a is brought into engagement with surface of split ring when clearance delay has been overcome. If owing to wear of the brake lining the braking displacement is greater than (a + b) (Fig. 9) where b is the pitch of the ratchet teeth, the ring 29 will advance by the amount of one tooth along the teeth 28 along the cylinder. The space b formed between the crown of the piston 7 and the end of the cylinder when the piston is returned to its inoperative position is immediately filled with oil. Mechanical actuation of the brake through the cylinders is performed positively as the cushion of oil occupying the space b in the end of the cylinder is uncompressed and where compensation is effected both on the mechanical control and on the hydraulic control of the brake.
Patent GB-1131215-A (GB)
Title: Chlorine liquefaction
IPC: C01B7/01
Filed: 1966-02-24
Abstract: 1,131,215. Chlorine liquefaction process. HOOKER CHEMICAL CORP. 24 Feb., 1966 [7 April, 1965], No. 8147/66. Heading F4P. Dry chlorine gas having been purified at (12) and compressed at (16, 22) is in part liquefied by passage through a primary liquefier (26) and in indirect heat exchange with water, the so-condensed chlorine is collected in a tank (30) and liquefaction of the remaining gaseous chlorine is continued in a secondary liquefier (34) cooled by liquid chlorine withdrawn from tank (30) through a duct (42) and expanded thus resulting in its vaporization and cooling. Product liquid chlorine is withdrawn from liquefier (34) through a duct (46) to tank (30) whilst residual compressed chlorine gas is passed through a duct (50) to a tertiary liquefier where it is almost completely liquefied in indirect heat exchange with expanded unvaporized liquid chlorine withdrawn from liquefier (34) through a duct (52) and then expanded to effect vaporization and cooling. High pressure liquid chlorine product is discharged through a duct (56) to tank (30). Coolant chlorine vapour is discharged from liquefier (34) in part through a duct (44) to a device (41) for controlling the pressure in the chlorine generating apparatus and in part to the purifier (12) where it is joined by expanded coolant chlorine from liquefier (48).
Patent GB-437869-A (GB)
Title: Improvements relating to the softening of raw rubber and the preparation of mixturesthereof
IPC: B29B7/56
Filed: 1935-03-15
Abstract: 437,869. Machines for treating rubber. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. March 15, 1935, No. 8161. Convention date, March 15, 1934. [Class 70] A process for softening raw rubber or preparing mixtures thereof with a rolling mill is characterized by cooling the sheet issuing from the mill rollers before returning it thereto by distending it-i.e. holding it out straight -for at least a part of its period of re-cycling back to the rollers. Means for distending the sheet comprise a roller 8 journalled vertically above the mill rollers 1, 2, in slide blocks 7 vertically reciprocable in guides 6 by an electric motor 12. Roller 8 is rotated by an electric motor 10 carried on a bracket 11 attached to a block 7. One method of procedure is as follows : the end of the sheet issuing from rollers 1, 2 is passed over the lowered, rotating roller 8 and down into the bite of the rollers, whereby an endless sheet is formed ; roller 8 is then raised. Alternatively, the issuing end may be led over the lowered non-rotating roller 8 which is then raised, at the speed of issuance of the sheet from between rollers 1, 2, to its upper limit, its vertical movement is stopped and its rotation commenced to lead the end of the sheet down into the bite to form an endless loop. The loop is removed by cutting. The process may be employed in conjunction with the invention described in Specification 435,974. The motor controls may be separated or correlated. Thus, in the alternative procedure described above the change of movement of the roller 8 from translation to rotation may be automatic. Cooling means such as water sprays and air jets may be employed.
Patent GB-130299-A (GB)
Title: An Improved Power Barring Apparatus.
IPC: G01L1/02
Filed: 1919-04-02
Abstract: 130,299. Schneider et Cie. Oct. 10, 1918, [Convention date]. Turning-gear. - The shaft of a steam - turbine or other engine is turned slowly through fractions of a revolution, for inspection or repair, by a fluidpressure device. A piston D controlled by a spring E and actuated by fluid pressure has pins engaging in longitudinal slots a in a fixed cylinder A and helical slots c in a sleeve C, which is free to rotate and has ratchet teeth c<1> for engagement with similar teeth f on a collar F secured to the shaft G to be turned. The pressure fluid is supplied by a three-way cock H or a slide valve controlling a fluid inlet h<1>, a supply pipe h<2>, and an exhaust pipe h<3>. The movement of the shaft G is indicated by a pointer N actuated from a lever O engaged by lugs on the end of the sleeve C.
Patent GB-1262064-A (GB)
Title: Method and apparatus for the preliminary removal of spots and stains from textiles
IPC: D06F43/00
Filed: 1970-02-20
Abstract: 1,262,064. Cleaning textiles. BOWE BOHLER & WEBER KG. 20 Feb., 1970 [20 Feb., 1969], No. 8335/70. Heading D1P. In a dry cleaning process, spots and stains are removed from textiles by a preliminary treatment with steam and or dry cleaning aid, while being tumbled in a rotating drum free from liquor. The steam and surfactant may be supplied through a common pipe or advantageously through separate pipes whereby each may be metered exactly, e.g. using a programme. A water inlet may be provided into the steam pipe for controlling the humidity of the steam.
Patent GB-343779-A (GB)
Title: Process for the purification of extracts of sexual hormone-like acting substances
Filed: 1930-03-14
Abstract: Crude extracts of the sexual hormones obtained from sexual organs, urine, f ces, or vegetable organisms are purified by dissolving the extract in methyl alcohol, repeatedly extracting the solution with petroleum ether, adding water to the methyl alcohol solution, repeating the extraction with petroleum ether, adding further quantities of water and again extracting with petroleum ether.  The aqueous methyl alcohol solution is finally evaporated to obtain the hormone.
Patent GB-1366399-A (GB)
Title: Apparatus for aligning and clamping toge'ther the ends of adjoi ning lengths of pipe
IPC: B23K37/053
Filed: 1972-02-23
Abstract: 1366399 Welding by fusion L T VALENTINE 23 Feb 1972 8352/72 Heading B3R Apparatus for aligning and clamping together, for welding, the ends 124, 126 of adjoining lengths of pipe comprises a cylindrical housing 12 supporting two sets of shoe assemblies 102 outwardly movable into engagement with respective pipe end internal surfaces. The housing is supported by a carriage 14 having pipe engaging wheels 18. The shoe assemblies of each set are pivotally connected to the outer ends of shafts 80 which are pivotally and slidably mounted in the housing and pivotally connected at their inner ends to one of two wheels 40, 42 respectively secured to shafts 60, 62 of pneumatic motors 56, 68 carried by the housing. Rotation of the wheels is limited by engagement of housing carried pins 76 and the ends of wheel slots 74. The motors are energized by air contained in a carriage-mounted tank 16 and controlled by a valve 21 actuated by a carriage pulling handle 20. Opening of the valve 21 effects oppositely directed rotations of the wheels 40, 42 to engage the shoe assemblies with internal pipe surfaces, whilst closing of the valve vents the motors for shoe retraction. To prevent scratching of the pipe surfaces (which may be plastics coated) the shoe assemblies comprise circumferentially slidable pipe contact pads 112 which may be circumferentially spring-biased to the position shown in Fig. 4.
Patent GB-927310-A (GB)
Title: Pneumatic impact tool
Inventor: SMITH ARTHUR JENKIN
IPC: B25C1/04
Filed: 1962-03-05
Abstract: 927,310. Stapling-machines. BOSTITCH Inc. March 5, 1962, No. 8358/62. Class 89 (3). A pneumatic impact tool for driving staples or other fasteners comprises a body 12 containing a first chamber 14 and a second chamber 72 separated by a partition 76 having a port 74, a hollow poppet valve 78 having a piston 88 operable in the first chamber and a head portion 84 for closing the port, a driver assembly comprising a piston 126 operable in the second chamber and a stem 110 having a smaller piston 122 reciprocable within the hollow poppet, a third chamber 70, valve means 30 for controlling flow of compressed air into the chamber 70 and so move the valve head 84 to permit air to act on the piston 126, a cylinder 152 forming a fourth chamber 153 in the third chamber and accommodating the small piston, one side of the latter being withdrawn from the cylinder as the driver begins to move thereby subjecting one side of the smaller piston to pressure from the third chamber, the poppet having at least one port 158 for communicating the pressure in the first chamber with the opposite side of the smaller piston to thereby return the driver assembly, the latter movement being buffered when the smaller piston re-enters the cylinder 152. In operation, when the control valve 30 is actuated by means of a trigger 24, a closure member 48 is lifted off its seat to permit compressed air to enter the third chamber 70, via a chamber 52 and a port 54, and so act on piston 88 thereby moving the valve head 84 off its seat. Air then acts on piston 126 to move the driver assembly downwards so that a driver blade 100 ejects a staple 108 from a magazine; a rubber buffer 160 limits the maximum travel of the piston 126. Upon release of the trigger, the control valve returns under the action of air trapped in a chamber 44 thereby closing communication between the first and third chambers and connecting the third chamber to atmosphere via chamber 60 and a port 62. The piston 88 then causes the valve head to close port 74 and air then entering port 158 acts on piston 122 to return the blade 100. If the rubber buffer becomes damaged as shown in Fig. 8, and is compressed beyond a certain limit, the smaller piston 122 abuts a shoulder on the valve head 84 thereby preventing the latter from closing; the compressed air in the chamber 72 then maintains the piston 126 in the position shown after the trigger has been released thereby serving to indicate that the buffer is damaged.