baber/WOPTO huggingface dataset:
Patent GB-1452200-A (GB)
Title: Multi-dose injector
IPC: A61M5/20
Filed: 1974-07-04
Abstract: 1452200 Injector MIZZY INC and A R MIZZY 4 July 1974 [18 July 1973] 29764/74 Heading A5R [Also in Division F1] A needleless injector apparatus comprises a powerised discharge means for ejecting measured doses of liquid under pressure through a discharge orifice 82 in a body 15, control means for actuating the powerised discharge means including a slide 89 adjacent orifice 82 reciprocable along the axis of the orifice and resiliently urged to an extended position whereupon a portion 101 of the slide projects clear of the orifice in a direction parallel to the orifice axis, the projecting portion when touching a surface through which the liquid is to be injected causing the slide 89 to retract and sensing means responsive to this retracted position then energising the powerised discharge means. Cylinder 30 contains a piston 22 and a rod 19 movable by compressed air from supply (14) via control mechanism (13) and conduit 21. Boss 53 of piston 52 is attached to rod 19 by collar 47 to possess limited transverse movement to minimise wear between O-rings 58 and chamber 59. Medicament is continuously introduced from a receptacle (12) via line 86 and non-return valve 88 into chamber 59 to be forced by piston 52 via passages 60, 61 into chamber 62. When the pressure of the medicament reaches a certain level, valve 65 opens to discharge the medicament through orifice 82. When slide 89 is pressed .against the subject's skin, it retracts against the action of spring 102 and gasket 107 seals conduit 108. While trigger 118 is pressed, gasket 122 seals passage 124 which is connected to conduit 108. Pressure then builds up in conduit 108 and causes a valve in control mechanism (13) to supply air to conduit 21 to start the injection cycle. If screw 94 is rotated through 90, its eccentric pin 96 fixes slide 89 in its retracted position so that injection occurs whenever trigger 118 is pressed. Screw 125 can be rotated to pivot the trigger about pin 120 to seal passage 124 so that, with screw 94 in its shown position, injection occurs whenever the slide is pressed against the skin. For more discharge force an enlarged cylinder 30, and piston may be substituted for cylinder 30 and piston 22. For greater dosage, member 43 on housing 15 is rotatable to vary the return stroke of the piston under the action of spring 38 by the contact of retainer 47 on rod 19 against the member. For a greater discharge pressure a pressure regulator in control mechanism (13) may be adjusted. In Fig. 10 (not shown) slide 89 is replaced by a plunger (130) which is pushed against a spring into a cylinder (128) to seal an aperture (129) to allow pressure build-up in conduit (108'). Time delay relays (TD) in control mechanism 13 ensure air is supplied for a given period even if the trigger is released and prevent retriggering causing a second cycle starting bebefore the first cycle is completed.
Patent GB-706771-A (GB)
Title: Cellulose derivative compositions
Inventor: HAWTIN PHILIP RICHARD
IPC: C08K5/12
Filed: 1950-12-05
Abstract: A cellulose derivative composition comprises a cellulose carboxylic-acid ester or cellulose ether plasticized with the sole aid of a liquid condensation polymer of ethylene glycol and phthalic acid, said polymer cotaining a predominating molar proportion of the glycol residue and having an average molecular weight (as determined chemically) between 500 and 1,500.  The polymer may be made by reaction between ethylene glycol and phthalic anhydride or phthalyl chloride, or by ester exchange polycondensation between ethylene glycol and an ester of phthalic acid, e.g. dimethyl phthalate. Preferably phthalic anhydride and glycol are heated together at a temperature not exceeding 260 DEG C. at atmospheric pressure for a period not exceeding 8 hours.  The proportion of glycol to anhydride may be in the molar ratio range of 1.5 : 1 to 2.5 : 1.  Provision is made for distilling off excess of glycol.  The average molecular weight of the polymer is determined chemically from the acid-equivalent and the ester-equivalent.  According to a modification, the composition may comprise, as sole plasticizer of the cellulose ester or ether, a liquid condensation polymer of 1, 2, 5, 6- tetrahydrophthalic acid and ethylene glycol, this polymer also having a predominating molar proportion of the glycol residue and having an average molecular weight between 500 and 1500.  In an example of the production of the polymer, ethylene glycol and phthalic anhydride in molar proportions of 2:1 are heated at atmospheric pressure to 260 DEG C. for 8 hours.  The product is boiled with water until the washings are neutral and then dried.  It is purified by dissolving in chloroform, filtering, and then evaporating the chloroform from the solution.  The product has a viscosity characteristic of 1.56 centistokes for a 20 per cent. solution in chloroform at 20 DEG C.  In another example, ethylene glycol and dimethyl phthalate in molar proportions of 2:1 are heated at 190 DEG C. for 9 hours at atmospheric pressure, and then for 3 hours at 250 DEG C. under a pressure of 2 mm.  Alternatively the reaction mixture is heated at 190 DEG C. under a pressure of 100 mm. in an atmosphere of nitrogen and in presence of 0.5 grams per mole of potassium carbonate until methanol ceases to distil. an example of making the composition, cellulose acetate of acetyl value, calculated as acetic acid, of 52-54 per cent. and 30 per cent. of its weight of an ethylene glycol-phthalic anyhdride condensation polymer are dissolved in acetone and the solution is cast to form a film.  The cellulose derivative compositions may be used for lacquers and moulding compositions.  Specification 322,542, [Class 70], is referred to.
Patent GB-1367850-A (GB)
Title: Data handling system
IPC: G06V30/10
Filed: 1972-06-26
Abstract: 1367850 Character recognition systems INTERNATIONAL BUSINESS MACHINES CORP 26 June 1972 [2 July 1971] 29802/72 Heading G4R A system for interpolating the value of a signal at a selected time between two successive signals includes means for determining a fraction of the difference between portions of the signals occurring in corresponding time intervals and for adding that fraction to the corresponding portion of the first-occurring of the signals, the sum being the interpolated value. In the case of a character recognition apparatus the system may be used to form a virtual scan of a character field from the actual scan, the virtual scan having scan columns and rows spaced differently from those of the actual scan to compensate for characters of non-standard size. The character field may be viewed by a moving column or a matrix of photo-cells to provide sequences of signals, each sequence corresponding to the scanning of one column of the field and comprising signals representing the reflectance of the points sampled in turn in the column. Fig. 2 shows circles indicating the points scanned by the photo-cells. The column signals are fed via a delay 17 equivalent to distance d3 and inverter 19 to adder 21 which determines the difference in the signals from adjacent cells, e.g. 109, 111 in a column. The successive differences feed integrator 23 to provide an analog signal which approximates that that would have been obtained had a single photo-cell been moved down the column. A difference signal whose instantanenous value is the difference between the analog signals of adjacent columns is generated by adder 31. The difference is multiplied at 47 by a fraction signal from register 45 and the result added at 49 to the analog signal of the first of the two columns. The signal provided by adder 49 approximates that that would have been obtained from a photo-cell moved down a scan line, e.g. virtual scan 2, Fig. 2, lying between two actual scan columns. The virtual scan signal is compared at 53 with a varying threshold, the output of comparator 53 being sampled at a rate corresponding to the distance d4 between rows of the virtual scan to provide binary signals representing a virtual scan of the field. The fraction obtained from register 45 depends upon the distance d2 between columns of the virtual scan, a signal representing d2 being held in register 41. Assuming the first columns of the virtual and actual scans coincide register 45 is initially empty. The register is updated, after differencing each pair of scan lines, to store a signal representing the distance between the first scan line of a pair and the relevant virtual scan line. The varying threshold of comparator 53 is dependent upon the slope of the analog signal of the first column of a pair during a period, corresponding to d3, preceding and during a period d3 following the present period d3.
Patent GB-786271-A (GB)
Title: Improvements in or relating to powered two-wheeled vehicles
IPC: B62M7/12
Filed: 1954-10-18
Abstract: 786,271. Spring frames for cycles. GRUMBKOW, B. VON. Oct. 18, 1954 [Oct. 16, 1953], No. 29925/54. Classes 136(1) and 136(3) A power driven twowheeled vehicle such as a solo scooter comprises a frame 6, a steering head 7, a seat 2 having a back support 3, a steerable front wheel 24 and a driven rear wheel 11, the frame being provided with an inclined supporting surface for the feet. As shown in Fig. 12, the lower ends of the front forks 23 are provided with a forwardly offset part 38 which is connected to an upper lever arm 33 by a pivot 22 in which a rubber torsion spring is provided. A telescopic spring 35 is interposed between the lever arm 33 and a lower lever arm 34. In addition a shock absorbing cushion 36 is mounted between a part 39 connected to the fork tube 38 and a part 37 fast with the steering column. The seat 2 is carried by the frame 6 which extends in S-formation from the steering head 7. The upper part 9 of the S-frame on which the seat is mounted forms a tubular spring. The frame 6 may consist of two tubes 6a, 6b (Fig. 10). An additional tube 10 is supported with transverse reinforcement on the tubes 6a, 6b. A sheet metal member 25 from which a lug 31 is stamped out, is welded to the tubes 6a, 6b and 10 and to the steering head 7. The tubes 6a, 6b remain open towards the front and are formed in the vicinity of the engine 13 (Fig. 6) with an outlet so that cables and the like may be fitted. The rear wheel 11 may be mounted directly on the tubes 6 (Fig. 13) or it may be mounted on a rocking lever pivoted to the frame. As shown in Fig. 13, the S-shaped frame consists of two parts 40, 41 which are secured against relative twining by guide means or by pins. The two parts 40, 41 are connected by a clamp 43. As shown in Fig. 6, a hollow member 16 containing a tank or tool box is arranged beneath the seat 2 which may be pivoted and locked. A parcel storing chamber 20 is formed behind a windshield 18.
Patent GB-839421-A (GB)
Title: Improvements in or relating to the isomerization of alkanes and catalysts therefor
IPC: B01J27/00
Filed: 1958-09-18
Abstract: A catalyst composition stated to be useful in the isomerization of normal alkanes (particularly C4-C6) comprises 0.05-2% Pd supported on an alumina-boria base containing 5-25% boria, the alumina portion being essentially composed of gamma alumina modifications resulting from the drying and calcination of a mixture of precursor hydrous alumina phases containing 55-95% of trihydrate, the balance of the mixture being amorphous and/or boehmite.  Specification 735,390 is referred to.ALSO:Normal alkanes containing from 4 to 6 carbon atoms are isomerized by contact with a catalyst consisting of 0.05-2% Pd supported on an alumina-bara base containing 5-25% bara. Suitable conditions are stated to be about 650-850 DEG  F., a weight hourly space velocity about 1-10 and a hydrogen to alkane molar ratio about 1-10 : 1.  Specification 735,390 is referred to.
Patent GB-489927-A (GB)
Title: Method of forming vehicle wheels
IPC: B21D53/26
Filed: 1936-11-03
Abstract: 489,927. Wheels for vehicles. KELSEY-HAYES WHEEL CO. Nov. 3, 1936, No. 29943. Convention date, Dec. 9, 1935. [Class 144 (i)] [Also in Group XXII] A vehicle wheel includes a tyre supporting rim 3, made from rolled strip, having a supporting web 2, a flange 4, and a groove 6 to receive a detachable flange 7.
Patent GB-1382029-A (GB)
Title: Firelighters
IPC: C10L11/04
Filed: 1971-06-25
Abstract: 1382029 Firelighter KAYFORD MFG CO Ltd 28 March 1972 [25 June 1971 1 Dec 1971] 30006/71 and 55795/70 Heading C5G A firelighter composition in the form of a jelly or paste comprises a dispersion of an organic fuel in a liquid vehicle containing a polymerizable material which on ignition polymerizes and solidifies the composition, at least at its surface. The fuel is preferably kerosene and the polymerizable material ureaformaldehyde resin. A polymerization catalyst is included which is rendered active on heating and comprises a plastics encapsulated compound, a material which reacts with formaldehyde liberated from the polymerization to produce the actual catalyst or an acid catalyst which has been inactivated by reaction with a volatile base. Starch, alginate, gelatin or polyvinyl alcohol may be included as a stabilizer. The liquid vehicle is water.
Patent GB-1513218-A (GB)
Title: Production of patterns in the surfaces of solid bodies by ion etching or sputter etching
IPC: H01L21/033
Filed: 1976-07-20
Abstract: 1513218 Ion or sputter etching SIEMENS AG 20 July 1976 [18 Aug 1975] 30095/76 Heading B6J [Also in Division B3] To produce an etched pattern in a surface of a solid body the surface is subjected to ion or sputter etching through a mask which will itself disintegrate under ion bombardment, the rate of disintegration of the mask increasing at an intermediate point in the total duration of the etching step. The increase may be achieved by using a mask consisting of a metallic layer, e.g. of Al, Ti, Cr, Mn, Mo, Ta, Zr or V and a photosensitive lacquer with the metallic layer which disintegrates more slowly outermost. Alternatively both layers may be metal with the layer which is slower to disintegrate outermost. A reactive gas may be supplied during the latter part of the etching step to increase the disintegration rate. Alternatively or in addition, a reactive gas, such as O 2  or carbon tetrafluoride may be added to the ion etching atmosphere of e.g. argon atoms at a pressure of 10<SP>-4</SP>-10<SP>-3</SP> Torr to reduce the disintegration rate in the earlier stages and then cut off. As shown, Fig. 1, a mask, comprising a photosensitive lacquer or aluminium layer 3 and a titanium layer 4, on an SiO 2  coating 2 on a silicon substrate 1 is subjected to an ion beam 5, or sputter etching using argon is carried out. The SiO 2  is removed faster than the titanium layer 4, straight-sided recesses being formed in the layer 2. When the titanium layer 4 has been removed, the layer 3 disintegrates more quickly, bevelled edges being formed on the mask and the recesses in the SiO 2  layer. Similar edge formations are achieved when a reactive gas supply is cut off during the etching operation to increase the disintegration rate.
Patent GB-1130839-A (GB)
Title: A method of work-hardening metal surfaces
IPC: C21D7/06
Filed: 1967-06-29
Abstract: 1,130,839. Improving physical properties. S. V. OCHAGOV. 29 June, 1967, No. 30103/67. Heading B3V. A method of work-hardening and improving the fatigue-life of helicopter rotor-spars, propeller blades, aircraft panels &c. comprises vibrating, in the vertical plane, the part 1 to be hardened with an acceleration exceeding that of gravity and plastically deforming the surface of the part with balls 3 which are thrown up by the vibrating surface. The part is worked in an enclosed chamber or space 2; the length of an inner and an outer surface being hardened simultaneously as the part is agitated, at a frequency corresponding to its natural frequency, by a vibrator 8. Elastic members 6, 7 support the chamber 2.
Patent GB-723987-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: KREUCHEN KARL HEINZ
IPC: H01J29/94
Filed: 1951-12-28
Abstract: 723,987. Discharge apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 23, 1952 [Dec. 28, 1951], No 30262/51. Class 39 (1). An electron discharge device including an electron gun is provided with a member composed of or coated with a material capable of absorbing gases in its solid state, such as thorium, zirconium, titanium, halnium, vanadium, niolium or tantalum; the member is so arranged that in operation it is heated preferably by the cathode or the cathode heater, so that a temperature gradient is set up along its length. An indirectly heated cathode 1, Fig. 1, may be surrounded by a cathode screen electrode 4 which may be of nickel coated on one or both surfaces with getter material; with the cathode at 800‹C. the area of the electrode 4 indicated at 5 will attain a temperature range of 200‹-600‹C., a suitable range for a thorium getter. If zirconium is used as the getter a higher temperature is necessary, and a range of 400‹-800‹C. may be obtained by surrounding the electrode 4 with a heat shield, Fig. 2 (not shown). In another arrangement, Fig. 3, for use with cathodes of a diameter less than 5 mm. a heater 7 may be arranged between the cathode 2 and the cathode screen 4, which is surrounded by a heat shield 6. Flanges 9, 8 may be provided on the cathode and screen electrode respectively to prevent loss of heat. With large cathodes a similar arrangement may be used, the cathode being provided with an additional internal heater, one of the two heaters being switched off when the cathode reaches its working temperature. In a further modification, Fig. 5, a rod 10 of thorium or zirconium is attached to the centre of the cathode to getter positive ions; for a cathode -10 mm. in diameter the rod may have a diameter of 0.5 mm. and a length of 2 mm., its temperature varying from 800‹C. at the cathode end to 400‹C. at the free end. The constructions shown are suitable for use in klystrons.
Patent GB-174701-A (GB)
Title: Improvements in and connected with magneto electric machines
IPC: H02K21/28
Filed: 1920-10-26
Abstract: 174,701. North, R. B., and Allen, A. Massey-. Oct. 26, 1920. Magneto-electric machines.-In magnetos having adjustable pole-sleeves and fixed pole-pieces keyed into the cast metal of the magneto framing, the fixed pole-pieces are formed of small width so that their upper edges are well below the highest point of the cylindrical space of the armature housing and their lower edges are well above the lowest point in this space. The pole-pieces may he formed as panels in the casing and may be secured by longitudinal and transverse holes d, e, Figs. 1 and 2, into which the molten metal enters during casting. The pole-pieces a may be dovetailed or be provided with strips of non-magnetic material h secured by rivets j, Fig. 5, to secure them to the casing. Alternatively, the pole-piece may be drilled and screws or studs m, Fig. 7, may be employed to anchor them. The pole-pieces a may also be secured in non-magnetic plates o, Fig. 9, formed as ordinary polepieces.
Patent GB-1515194-A (GB)
Title: Covering process
IPC: B32B3/10
Filed: 1976-10-12
Abstract: 1515194 Manufacturing binder covers TWINLOCK Ltd 12 Oct 1976 [18 July 1975] 30281/75 Headings B6A and B6E [Also in Division B5] A cover for a loose-leaf binder comprises two boards pivotally connected, and covered on at least one side, by a sheet of plastics material with venting apertures in it, adhesively secured to the board faces and welded to a further member on the other side of the boards, or to a folded portion of itself, at the board edges. Preferably the plastics sheet is of PVC, and has the venting apertures adjacent edges or corners of the boards.
Patent GB-757486-A (GB)
Title: Improvements in or relating to the pumping of liquids and centrifugal pumps therefor
IPC: F04D29/44
Filed: 1952-11-28
Abstract: 757,486. Centrifugal pumps. MURRAY, W. Feb. 26, 1954 [Nov. 28, 1952], No. 30292/52. Class 110(1) A single-stage centrifugal pump adapted to operate at more than 4,000 revolutions per minute, with a blade tip velocity of at least 25 metres per second, comprises an unshrouded impeller operating in a chamber of non- volute construction which is provided with one or more tangential discharge ducts, the clearance between the sides of the blades and the end walls of the chamber being smaller than the clearance between the blade tips and the peripheral wall of the chamber. The impeller comprises six unshrouded radial blades e, the spaces between the blades being open at both sides. The running clearance between the edges of the blades e and the walls of the pump casing a are kept small, i.e., of the order of 0.020 inch, and labyrinth seals or wearing rings are dispensed with. The contents of the pump as a whole are set in rotation at the high operating speed, and this prevents a return flow through the narrow running clearances. Two cylindrical or conical discharge ducts (not shown) are arranged tangentially to the outer wall of the casing at an angular spacing of about 90 degrees. Alternatively, a single discharge duct may be provided.
Patent GB-323070-A (GB)
Title: Improvements relating to the manufacture of litharge and red lead
IPC: C01G21/02
Filed: 1928-10-20
Abstract: 323,070. Carreras, R. S. Oct. 20, 1928. Chemical furnaces; roasting furnaces; charges, agitating.-A two-stage furnace for converting lead carbonate first into litharge and then into red lead comprises, as shown in Fig. 2, superposed chambers 13<a>, 13b fitted with air supply pipes 24 and heated respectively to 320‹ and 5-600‹ C. by gases from heating means 16 which pass through gratings 13<1> in partitions 13. Rotary arms 21 carry teeth 25 which agitate the charge. Certain of the teeth are pivotally mounted as shown and may be operated against spring resistances from a handle 27 through flexible members 26 passing through a hollow rotary spindle 20 to rock the teeth to assist discharge of the material under treatment. Lead carbonate is fed through an inlet 11 to chamber 13a in which litharge is formed, this is discharged through a valved outlet 14 to chamber 13<b>, and the red lead formed therein discharged through a second valved outlet 14. If litharge is desired as the final product, means may be provided to discharge it from chamber 13<a> other than through the outlet 14.
Patent GB-1172107-A (GB)
Title: Winding Machines
Inventor: LEE GEORGE
IPC: B65H54/38
Filed: 1967-07-01
Abstract: 1,172,107. Bobbin winder. GIDDINGS & LEWIS-FRASER Ltd. 2 May, 1968 [1 July, 1967], No. 30471/67. Heading D1J. An automatic travelling spindle winder which, in use, is circulated around a track, comprises a frictionally driven input drive member 19 connected to a transmission means which rotates a bobbin support 14 and drives a traverse mechanism 6 so that the angular velocity of the bobbin support 14 and the frequency of the traverse 6 are in a constant ratio. The bobbin support 14 is mounted on a casing 1 of the winder. As shown, the drive wheel 19 is connected by chains 16 and 9 and sprockets to the bobbin support 14 and the traverse drive. The traverse drive comprises a cylindrical cam 4 cooperating with cam follower 9 which actuates the traverse 6. The winding unit (Fig. 1) is pivotally mounted at 22 on a bogey (B) which is mounted on rails (2, 2'), see Fig. 2 not shown. The bogey carries a support for a yarn supply package. The bogey is moved along the rails parallel to the drive shaft by means of an arm (35) extending from the bogey casing (21). The winding unit can be disengaged from the drive shaft 20 by pivoting it about pin 22, e.g. to allow the bogey to negotiate corners in the track or on breakage of the yarn. During winding the yarn passes through a guide (32), a yarn tensioner (33) and a breakage detector (34).