baber/WOPTO huggingface dataset:
Patent GB-1248128-A (GB)
Title: Preparation of transparent and thermostable copolymers
IPC: C08F10/00
Filed: 1969-03-25
Abstract: 1,248,128. Copolymers. STAMICARBON N.V. 25 March, 1969 [28 March, 1968], No. 15618/69. Heading C3P. Transparent, thermostable copolymers are prepared by copolymerizing 4-methylpentene-1 and a vinyl halide at a pressure below 600 atmospheres. The vinyl halide may be vinyl chloride, bromide or fluoride and minor proportions of other monomers, e.g. vinylidene chloride, vinyl esters, acrylic and methacrylic compounds, vinyl ethers, styrene, vinyl pyridine, allyl compounds and maleic and fumaric esters, may also be present. Polymerization may be effected in bulk, solution, suspension or dispersion in the presence of peroxy, azo and redox catalysts, dispersing and suspending agents, and buffers. Fillers, plasticizers and other polymers may be incorporated and the products made into bottles, sheets and films. Examples describe the copolymerization of vinyl chloride and methylpentene in aqueous media in the presence of hydrolysed polyvinyl acetate and (1 to 4, 7 and 8) di-(t.-butyl-4-cyclohexyl) percarbonate and azodiisobutyronitrile (5, 6 and 9) azodiisobutyronitrile and (11) lauryl peroxide. The products are compounded with organotin and organic cadmium/barium stabilizers and glycerylmonoricinoleate as lubricant.
Patent GB-756994-A (GB)
Title: An improved device for determining the polar coordinates of points in a plane surface, and a radial triangulator in which this device is employed
IPC: G01C11/00
Filed: 1954-05-27
Abstract: 756,994. Measuring apparatus. ROELOFS, R. May 27, 1954 [May 29, 1953], No. 15753/54. Classes 97 (2) and 97 (3). Polar co-ordinates are determined by a rectilinear graduated scale, rotatable about the pole, and which can be moved lengthwise through a short accurately measured distance, and a circular graduated scale which indicates the angular position of the rectilinear scale. Preferably, the rectilinear scale 7, Fig. 1, is mounted in a frame 5 in a bracket 4 which is rotatably mounted on a fixed vertical spindle and plate 12 is non-rotatably movable along the spindle so that it may be lowered for a photograph 11, for example, to be inserted between the scale 7 and the plate 12. As shown in Fig. 1, a radial triangulator comprises the apparatus in duplicate and a stereoscope for the observation of a stereoscopic pair of photographs 11, 11<SP>1</SP>. The circular scales, made of glass, are fixed to the lower ends of the brackets 4, 41 within the casings 2, 2<SP>1</SP>, and their images are projected on to translucent screens 21, 21<SP>1</SP>. Scales 7, 7<SP>1</SP> are provided with measuring marks 8, 8<SP>1</SP> consisting of an accurately spaced line of dots or circles and micrometer screws 6, 61 measure the displacements required for coincidence of a point on the photograph with that mark which is nearest it. Vernier movements actuated by knobs 9, 9<SP>1</SP> allow the vector angle to be finely adjusted. Brackets 4, 4<SP>1</SP> may house lamps below the plates 12, 12<SP>1</SP> to illuminate the photographs. Dove prisms in the stereoscope 22, 22<SP>1</SP> make it possible, when passing from the pair of photographs a, b to the pair b, c, to substitute the photograph c for the photograph a, while the photograph b remains in position. The length of the stereoscopic base can be varied by adjusting the height of prisms 25, 251.
Patent GB-1234686-A (GB)
Title: Electromagnetically actuated pump
Inventor: CERMAK ANTONIN
IPC: F04B17/04
Filed: 1969-03-26
Abstract: 1,234,686. Solenoid operated pump. CESKOSLOVENSKA AKADEMIE VED. March 26, 1969 [March 26, 1968], No. 15756/69. Heading F1A. An electromagnetically actuated pump suitable for pumping radio-active solutions comprises a pair of axially spaced jackets 2, 3 of ferromagnetic material containing solenoids 4, 5, surrounding a cylindrical pump body 1 in which is mounted a fixed piston 16 on which is axially slidable a hollow member 13 sealed at one end, and axially bored at the other to receive the piston 16. The pump body 1 is provided with inlet and outlet openings 10, 11 each having a non-return ball valve 9, 8 respectively. Alternate energization of the solenoids 4, 5 causes the member 13 to reciprocate varying the volume of the pump chamber 12 to produce a pumping action.
Patent GB-235901-A (GB)
Title: Improvements in shunt excited rotary converters
IPC: G03B41/02
Filed: 1925-06-18
Abstract: 235,901. Meller, R. June 23, 1924, [Convention date]. Rotary converters; exciting. - A rotary converter is provided, in addition to the shunt field winding E, with one or more supplementary windings F which as a whole assist the secondary continuous-current armature field and which magnetize the main poles over their complete polar surfaces. It is explained in the Specification that the continuous-current voltage falls as the excitation of the winding F is increased. In one arrangement giving a drooping voltage characteristic and suitable for arc welding &c., the winding F is connected in series with the load and in parallel with an adjustable resistance. A constant adjustable voltage may be obtained by connecting the supplementary winding across the brushes a, b in series with a rheostat. These two arrangements may be combined so as to give a rising or a falling characteristic. Fig. 6 shows a machine in which the shunt winding E is concentrated around the poles and the supplementary windings are distributed in slots in such a way as not to surround the commutating poles W. In small constructions, both windings are concentrated.
Patent GB-1432664-A (GB)
Title: Dentures
IPC: A61C13/113
Filed: 1973-04-03
Abstract: 1432664 Making dentures S SCHNEIDER and H S KATZ 3 April 1973 [6 April 1972] 15818/73 Heading A5R A former for use in the preparation of dentures comprises a tray which approximates the shape of a finished denture and carries false teeth on its inner surface, at least part of the outer surface of the tray being formed of a formable material so that the tray can be conformed to the shape of a patients gum or model thereof with the formable material retaining the conformed configuration. A former 20 for an upper denture includes a tray 21 having outer and inner flexible walls 24 26 a palate portion 28 and a lower part 29 having pockets to receive false teeth 42, the tray being formed e.g. by vacuum moulding from a sheet of plastics material having little elastic memory. A formable material 48 is secured to the outer surfaces of walls 26, 28 so that the tray can be deformed into contact with the gums and palate (as shown in outline). Preferably the material 48 is heat-formable, and the former is immersed in hot water prior to being moulded by finger-pressure to the patient's gums and palate. A mouldable spacer may be inserted between the former and the patient's gums. To form a denture a first layer of dentureforming material capable of cold-curing to a rigid acrylic polymer is distributed over the palate and gum portions of the former. A preformed shim of acrylic or non woven polyester is positioned over the material. A second layer of a denture-forming material capable of cold curing to a semi-rigid acrylic polymer is distributed over the shim and the assembly inserted into the patient's mouth and moulded in situ to the gums and palate. A multi-layer shim may be used in which case it is enclosed within the first layer. The tray 21 may be formed from a copolymer of ethylene and vinyl acetate and the formable material may be a wax.
Patent GB-1264057-A (GB)
Title: Apparatus for shifting railway track sideways
Inventor: PLASSER FRANZ
IPC: E01B33/02
Filed: 1970-04-03
Abstract: 1,264,057. Railway track shifting. F. PLASSER. 3 April, 1970 [3 April, 1969], No. 15903/ 70. Heading E1G. A tool for moving a railway track laterally comprises a first member 10 rolling or sliding on the top of the rail 3, and a further member 11 movable relative to the first member and which can apply lateral force to the side of the rail head. A support 14 carries flanged wheel 10 and vertical guide 12 in which pin 11 is axially slidable. The pin carries a tapered roller 11' and is moved by fluid supplied by line 13 to guide 12. Support 14 is movable by jacks (8) longitudinally of the track about a pivot on a machine running on the rails. The tool and support 14 are hydraulically movable laterally of the track. The tool (7, Fig. 1, not shown) is located behind lifting means (5) and tamping tools (6) on the machine. In Fig. 4 (not shown) pin 11 is rotatable in a guide.
Patent GB-780327-A (GB)
Title: Improvements in or relating to centrifugal clutches
IPC: F16D37/00
Filed: 1954-05-28
Abstract: 780,327. Friction clutches. BIAL, W. July 15, 1955 [May 28, 1954], No. 15928/54. Class 80 (2). A centrifugally engaged clutch comprises a driving (or driven) shaft 1 carrying a housing 18 surrounding a rotor 17, of generally elliptical cross-section, on a driven (or driving) shaft carrying a second housing 19 surrounding the housing 18, which is externally also of generally elliptical cross-section, balls 6 or other individually manufactured bodies of determinate shape lying within the two housings. On rotation of either of the shafts 1, 2, the balls 6 move radially outwards under centrifugal force and transmit torque to the inner surface of the surrounding housing. Lubricant is enclosed with the balls. The working surfaces of the rotor and housing may be ribbed, &c. In a modification, Fig. 5 (not shown), the housing on one shaft, surrounding the rotor on the other, extends axially within a housing fast on the second shaft and has a portion which acts therein as a rotor. In another similar modification, Fig. 8 (not shown), a housing on one shaft surrounds a rotor on the other shaft and is extended to form a rotor lying within a housing secured to the second shaft and extending axially to surround the first housing over its full length. In a modification in which torque can be transmitted only from the shaft 1 to the shaft 2 but not from the shaft 2 to the shaft 1, Figs. 1, 2 (not shown), a rotor of generally elliptical cross-section on the shaft 1 lies within a housing fast on the shaft 2, and in a similar modification, Figs. 3, 4 (also not shown), the rotor is provided at both ends with disc-like flanges.
Patent GB-1531435-A (GB)
Title: Producing tapes of filaments
IPC: D04H3/12
Filed: 1976-06-17
Abstract: 1531435 Carbon fibre tape manufacture IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 17 June 1976 [17 April 1975 15 May 1975] 15967/75 and 20755/75 Heading D1L Carbon fibre tape is manufactured by impregnating tows 60 of the fibre individually with a settable resin and then flattening the impregnated tows over a bar 72 so as to cause the tows to join side-by-side to form the tape. The resin applicator may be that disclosed in Specification 1434926 and the flattening device that disclosed in Specification 1476929.
Patent GB-1184981-A (GB)
Title: An Arrangement for Valve Clearance Adjustment in Overhead Camshaft Internal Combustion Engines
Inventor: MACKERLE JULIUS
IPC: F01L1/20
Filed: 1968-04-03
Abstract: 1,184,981. Cam followers. USTAV PRO VYZKUM MOTOROVYCH VOZIDEL. 3 April, 1968 [5 April, 1967], No. 15986/68. Heading F2K. [Also in Division F1B. A cup-shaped tappet 1 contains a grooved holder 4 into which shims 3 may be inserted through tappet aperture 2 for valve clearance adjustment. The holder 4 is rotatable in the tappet 1 to move the groove 9 out of alignment with the aperture 2 and to bring the spring- biased ball (6), Fig. 2 (not shown), of a detent mechanism into engagement with a hole (8) in the tappet wall.
Patent GB-1465956-A (GB)
Title: Wire bonding
IPC: B23K20/00
Filed: 1974-04-10
Abstract: 1465956 Wire bonding apparatus HITACHI Ltd 10 April 1974 [12 Sept 1973] 16057/74 Heading B3R In a wire bonding apparatus the, wire 19 to be bonded to semi-conductor element 21 is pressed on to the element by a capillary tube 8 through which the wire is guided. The up and down movement of tube 8 is effected and controlled by arm 7 rockably mounted at 6 on, for example, cross-slides 5, the arm being rocked by reciprocating rod 10 operated, as shown, by cam 14 and roller 12. The rod 10 acts on arm 7 through a control element 24 whose flange 9 engages a protrusion 23 on the arm and whose position relative to the rod is adjustable by means of a cap nut 35 secured to the rod by snap ring 36 and screwed on to element 24. Rod 10 may be non-rotatably guided in sleeve 11 and spring 29 ensures constant contact between cam and roller, while adjustable spring 30 ensures contact between flange 9 and protrusion 23 and applies the bonding pressure.
Patent GB-254500-A (GB)
Title: Apparatus for containing and delivering tea and like commodities in measured volumes
IPC: A47F1/035
Filed: 1926-03-22
Abstract: 254,500. Maret, C. March 22, 1926. Moving-chamber apparatus.-In an apparatus for containing and measuring quantities of tea and like commodities, having a measuring-chamber f sliding between the lower end of the hopper a and the base d of a casing b enclosing the hopper, the discharge opening h being formed in the base d, the sides of the hopper are made steep, and extend from the top edges of the casing b, and indicators are arranged between the walls of the hopper and the casing. The measuring- chamber forms part of a sliding element i consisting of a strip of metal etc.; the front e<1> forms a handle, by means of which the part e is drawn forwards against the action of a spring g. The rear portion of the part e then closes the bottom aperture of the hopper a, while the measuring- chamber registers with the discharge opening h above a shoot i. A spring pawl o operates a counter l by means of a wheel m. When the hopper a is nearly empty, a plate w is lifted by the counterweight v and operates an indicator t.
Patent GB-683434-A (GB)
Title: A method for producing contact springs
IPC: B32B15/01
Filed: 1950-06-28
Abstract: In an electric contact spring comprising a low resistance contact portion bonded to a spring strip, the materials of the contact and spring parts have substantially the same hardening temperatures.  The spring may be a beryllium bronze comprising 1.8-2 per cent beryllium, 0.25 per cent cobalt or 11 per cent nickel and the balance copper or a nickel-silver comprising 12 per cent nickel, 64 per cent copper and 24 per cent zinc.  Phosphor bronze or brass may also be used.  The contact material is a silver alloy containing 6-10 per cent copper and, if desired, small quantities of beryllium, nickel or both.  The spring and contact materials are bonded by cold rolling followed by soft annealing at 550 DEG -700 DEG C for 4 hours in a non-oxidizing atmosphere. Solution treatment is then carried out at 750 DEG C followed by quick cooling in water.  A reduction of 33-50 per cent is then effected by a final rolling, followed by a tempering of the spring by heating at 300 DEG C for 4 hours.  The final rolling can take place after the tempering step, but if so, the reduction must not exceed 33 per cent.
Patent GB-569862-A (GB)
Title: Improvements in or relating to lathe tool holders
IPC: B23B27/16
Filed: 1944-01-04
Abstract: 569,862. Tool-holders. TAYLOR, E. S., and TAYLOR, R. C..Tan. 4, 1944, No. 16208/43. [Class 83 (iii)] In a lathe tool holder comprising lower and upper parts a, b defining an inclined recess b<1> in which the cutter c is gripped, a plate d<1> is slidable on the part a and has a transverse lug f engaging the end of the cutter so as to adjust the height of the cutting edge by locating it in the required position along the inclined recess. A scale g on the part a facilitates the adjustment and springs d force the parts a, b apart when the clamping pressure is released, to free the cutter for removal. In a modification, the plate d' is dispensed with and the scale g is provided on the shank of the cutter c, and in a further modification the holder a, b is mounted on an inclined base along which it is moved for height adjustment of the cutter, the scale and an index mark being provided on the base and part a.
Patent GB-969175-A (GB)
Title: Table support structure for grinding machine
Inventor: HAMMOND LEE CUSTER
IPC: B24B3/34
Filed: 1963-04-24
Abstract: An electrolytic grinding machine comprises a grinding wheel mounted for reciprocable movement in a direction transverse to its axis of rotation, a carriage and guideways on the frame of the machine for supporting the carriage for movement toward and away from the grinding wheel, a work-table alternatively mounted on the carriage in either a high or low position, the table being supported in a high position by a first intermediate table support securable to the carriage and the table, the first intermediate table support being relatively tall and including means for supporting the table for tilting movement about a horizontal axis, and the table being supported in a low position either by being directly secured to the carriage or by being secured to the carriage by a relatively short second intermediate table support adapted rigidly to support the table in a horizontal position.  A grinding machine comprises a grinding wheel 31 carried by a structure 37, 38, 39, 41 oscillated on a shaft 40 by means <P1> <PICT:0969175/C6-C7/1> <PICT:0969175/C6-C7/2> <PICT:0969175/C6-C7/3> including a linkage 44. A carriage 4 movable on the machine frame 1 towards and away from the grinding wheel has a post 6 extending through an opening 9 in an electrolyte-collecting pan 7 fixed to the machine frame.  The opening has an upstanding flange 11 and a cap 12 secured to the post 6 has a depending flange 13 whereby escape of electrolyte through the opening is prevented.  A workpiece W1 as held by a clamp V1 on a table 26 secured by screws to supports 14, 21 each comprising an upper member adjustable about a horizontal axis on a lower member; adjustment is by a knob 20. The supports 14, 21 are secured by screws to the top of the post 6.  For grinding a tall workpiece W3 held by a clamp V3, or a workpiece W4 held by a tall fixture V4, the supports 14, 21 are removed and the table 26 is secured by screws to blocks 52, 53 secured by screws to the post 6.  When the table has no skirt, or has a bearing surface below the skirt, the blocks 52, 53 may be omitted. A second table 26a may be provided.  Specifications 858,175, 860,084 and 861,039 are referred to.
Patent GB-495976-A (GB)
Title: Improvements in or relating to fastening devices
IPC: F16B37/04
Filed: 1937-06-11
Abstract: 495,976. Securing nuts. ELASTIC 'STOP NUT CORPORATION. June 11, 1937, No. 16248. Convention date, June 11, 1936. [Class 89 (i)] A nut 24 is held against rotation in a basket member 30 having a hollow shank portion 18 fixed to the work. A bolt 42 passes through the portion 18 and engages the nut which is held against axial displacement by tongues 36 on the basket entering a groove 34 in the nut. Clearance is provided between the bolt 42 and the interior of the shank 18 and between the basket 30 and the nut to allow of radial adjustment. The nut 24 may have an insert 40 of non-metallic material. The shank 18 may be secured to the work by riveting over its end or it may have a roughened outside surface to grip the work.
Patent GB-351696-A (GB)
Title: Improvements in or relating to apparatus for holding rolls of paper or the like
IPC: A47K10/38
Filed: 1930-05-27
Abstract: 351,696. Holders for rolls of paper &c. HEATH, H. F., Salisbury House, Redditch, Worcester, and CORKE, C. L., 14, New Bridge Street, London. May 27, 1930, No. 16264. [Class 18.] A holder for rolls of paper and the like of the kind having a plate, strip, or like member constituting a cutting blade or tearing guide disposed at one side of the roll, and means for urging said plate against the side of the roll, is characterized by the said blade or guide forming a shield or cover for the roll or for a part thereof. The roll holder comprises a frame 1, having an upper bar 2 and depending arms 3, the lower ends of which are turned inwardly at 4 to engage holes in a wooden or other roller 5 which carries the roll 6 of paper or other material. The upper bar carries brackets 7 with slots 8 for suspension purposes. Pivotally mounted on the main frame is an auxiliary frame of strip material having a lower bar 9, extending parallel with the axis of the roll and just above the roll, and two vertical arms 10 through which the top bar of the main frame passes. The arms 10 are cranked inwardly at 11 to make room for coiled springs 12, one end 13 of each of which engages the secondary frame while the other ends engage the main frame so that the edge 16 of a plate 15 is urged against the side of the roll. Weights may be used instead of or in addition to the springs. The plate 15, which forms a cover or shield for the roll, preferably extends beyond both ends of the roll and the edge 16 may be sharp and need not be parallel to the axis of the roll. The cover member may extend completely around the roll, the material being withdrawn through a slot one edge of which forms the tearing edge, or a slot may be provided in a cover member which only covers a part of the roll.
Patent GB-287472-A (GB)
Title: Improvements in reamers for earth boring apparatus
IPC: E21B10/30
Filed: 1927-06-20
Abstract: 287,472. Reed, C. E. March 21, 1927, [Convention date]. Borehole apparatus. -A reamer for use in boring earth comprises a body 1 with a pin 1<a> and socket 2 for connection to the drill pipe and drill head respectively, and with spaced recesses 4 in which rolling cutters are mounted; the cutters turn on sleeves 7 between the eccentric heads 14<1> thereof and eccentric collars 8, the sleeves 7 being secured by pins 9 passing through projecting lugs 11, 11<a> on the body and held by cotters 13. The eccentric heads 14<1> and collars 8 engage correspondingly formed recesses 5.
Patent GB-111481-A (GB)
IPC: B23K3/03
Filed: 1917-11-09
Abstract: 111,481. Soc. des Moteurs Salmson, (Systeme Canton-Unne). Nov. 20, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Heating by electricity.-Soldering-irons, laundry irons, radiators, &c. are heated bv electromagnetic induction. The soldering-iron shown in Fig. 2 has a copper part e constituting a loop about an iron core d; this is placed between the poles of a laminated electro-magnet a, Fig. 1, energized by an alternating current. The magnet may form part of the tool, the core limbs being extended to serve as the shank, and the coil b arranged on the handle. The flat iron shown in Fig. 4 has a ,similar loop e and iron core d.
Patent GB-438970-A (GB)
Title: Improvements in and relating to cabinet beds
IPC: A47C17/48
Filed: 1934-06-04
Abstract: 438,970. Cabinet bedsteads. NOBLE, P., Old Town Garage, Milngavie, Dumbartonshire. June 4, 1934, Nos. 16548 and 24722. [Class 52 (ii)] The head-end section 1 of a folding bed frame is connected by struts 7 to the door 5 of a cabinet bedstead of the type in which the bed frame is housed, when folded, within a cabinet, the front wall of which is constituted by the hinged door 5 whereby the bed frame may be unfolded through the door, the head end section 1 being pivoted at 9 at the front edge of the cabinet so that the bed, when unfolded, is located entirely outside the cabinet. The intermediate section 2 is supported between the head section 5 and the foot section 3 having foldable legs 13. In a modification, the pivot 9 is arranged in a slightly lower position.
Patent GB-590500-A (GB)
Title: Vacuum tube structure
IPC: H01J19/34
Filed: 1943-10-09
Abstract: 590,500. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Oct. 9. 1943, No. 16574. Convention date, April 30, 1942. [Class 39 (i)] In a vacuum tube having a recessed anode into which the cathode and grid extend, the in, active inner end portion. of the recess is enlarged so that the inactive part of the grid is further from the anode wall than the active part. In the form shown, the grid 8 and cathode 9 co-operate with the portion 6 of the anode having a recess of diameter considerably smaller than the inactive part 7. The anode has an opening 2 with a ring 4 to receive the connection of a gas or liquid circulating device and heat radiating fins 3 are provided,