baber/WOPTO huggingface dataset:
Patent GB-538716-A (GB)
Title: Improvements in or relating to the extrusion of thermoplastic materials
IPC: B29C48/05
Filed: 1939-11-06
Abstract: 538,716. Moulding cellulose derivatives; extrusion machines. DU PONT DE NEMOURS & CO., E.I. Nov. 6, 1939, Nos. 29489 and 29490. Convention dates, Nov. 5, 1938, and Dec. 10, 1938. [Class 87 (ii) ] In covering, by extrusion, a wire with a thermoplastic composition comprising a cellulose derivative, other than nitrocellulose, which is liable to decomposition if maintained at elevated temperature, the wire and composition are passed through an extrusion zone heated to a temperature above the decomposition temperature, the temperature being so controlled that the viscosity of the composition at the extrusion orifice is less than 600 poises and the rate of extrusion'is such that the composition is subjected to such temperature for a time insufficient to cause decomposition, the extruded product being rapidly cooled as it emerges from the orifice. Preferably the composition is progressably heated as it passes through the extrusion apparatus. Specified cellulose derivatives are ethyl cellulose, benzyl cellulose, cellulose acetate, cellulose acetopropionate and cellulose acetobutyrate, particulars of appropriate temperatures &c. being given. As shown, granular ethyl cellulose is fed from a jacketed hopper, fitted with a worm and scraper, into a jacketed casing , 1 through which the heated material is propelled by a worm 3 into the extrusion head where it is further heated by a jacket supplied with a heating medium through inlet and outlet 6, 6<SP>1</SP>. In the extrusion head, the material is deflected at right angles by a transverse wall 13 and passes through a screen 7 to fill the space 8 where it surrounds the wire 9 as it emerges at 10 from the end of a guider 12. The extruded coating emerging from the die 11 is rapidly cooled, e.g. by successive air or water baths. A preliminary guide plate 15 is furnished with an opening 14 adapted to centre the wire and to ensure a feed of wire of relatively uniform diameter. The various heating jackets are supplied with a liquid of high boiling-point, e.g. oil or diphenyl and are heated to successively higher temperatures. This ethyl cellulose, preheated to 100C is introduced into the funnel and is then heated to 180-220C.; it is then propelled through the chamber 1 to the extrusion head where it is heated to temperatures between 200 and 275C. A modified form of guide is described; also a deflector for use in the extrusion head.
Patent GB-135859-A (GB)
Title: Improvements in Electric Stoves.
IPC: F24C15/10
Filed: 1919-11-26
Abstract: 135,859. Soc. Anon. dite Calor. Nov. 29, 1918, [Convention date]. Electric hot-plates.-A stand a, Fig. 3, has a central aperture across which extend arms b, which are bent downwards, and have holes to receive bolts f engaging with bosses in a hot-plate c; a resistance wire j, Fig. 4, is embedded in an insulating plate e, preferably of asbestos, which is supported on a plate d having holes to receive the bosses and terminal studs k. A sheet of mica is interposed between the wire and the plate c. A flanged tube l, insulated by a bushing, is threaded externally to receive nuts n clamping a lead, and internally to receive a contact-screw m engaging with a stud k. The plate c has a depending flange c<11>. The stand may be of square or circular shape.
Patent GB-366515-A (GB)
Title: Completely automatic control for electrically driven vehicles, for single or group running
IPC: B60L15/34
Filed: 1930-10-02
Abstract: 366,515. Master control of motors ; controllers. SœDDEUTSCHE EISENBAHN-GES., 34, Zweigertstrasse, Essen, Germany. Oct. 2, 1930, No. 29573. Convention date, Oct. 2, 1929. [Class 38 (iii).] Actuating mechanically.-In a multiple unit train control system, closure of master switch 6, Fig. 1, causes a switch D to turn to the driving position and a running-controller B, Fig. 1a, to turn step-wise under the control of an accelerating coil 71 in the motor circuit. The drum B is urged forward by a self-winding spring drive A, and can be arrested in the series position by a pawl 64 operated upon closure of a switch 24, Fig. 1. When the switch 6 is opened, the drum D returns to the braking position disconnecting the motors from the drum B and connecting them to a drum E, also the drum B completes its rotation unhindered in the same direction through the "full on" position to the zero position. With drum D in its braking position, the drum E can be rotated by an oil pressure system operated by a pedal 78. Reclosure of switch 6 causes drum E to be declutched from its operating piston and to be returned to its zero position by a spring, whereupon an interlock thereon allows the drum B to be operated again. Manually operated reversers F, Fl allow of transmission of control over trainwires M, N to other coaches, the motors of the driver's coach either running forward or being cut out. In addition they can be set so that the train-wires are de-energized, either pair of motors of the driver's coach being set for forward or reverse running or both pairs for reverse running. In the event of failure of the spring-drive A, the controller B can be operated manually.
Patent GB-1317524-A (GB)
Title: Method of making ferrite products for permanent magnets
IPC: C04B35/26
Filed: 1971-06-24
Abstract: 1317524 Magnetic materials GENERAL MOTORS CORP 24 June 1971 [2 July 1970] 29594/71 Heading N1H A hexagonal ferrite MO. 6Fe 2 O 3  (M = Ba, Sr or Pb) is made by milling a homogeneous mixture of magnetite (Fe 3 O 4 ), a source of BaO, SrO or PbO and 0À3-1À5 wt per cent boric acid or boric oxide, and calcining the resultant mixture. A permanent magnet is made by comminuting the calcined mixture, e.g., to 1-2 microns, orienting the particles and forming them into a body of required shape, and sintering the body at 1900-2150‹ F (1038-1177‹ C). The magnetite used may contain 93À02% Fe 3 O 4 , 6À15% Fe 2 O 3 , 0À1% Si, 0À06% V and less than 0À002% Ti and may have an initial particle size of 50 microns. Orientation may be effected magnetically by pressing an aqueous slurry of commincited particles in a directional magnetic field, or mechanically by dispersing the particles in a binder and forming a flexible sheet from which magnetic bodies are cut. In an example, test cylinders of density 2À75 g/cm<SP>3</SP> are pressed from an aqueous slurry of ferrite particles made from magnetite, strontium carbonate and H 3 BO 3 .
Patent GB-223426-A (GB)
Title: Improvements in and relating to vapour generators for liquids having a relatively high boiling point, such as mercury
IPC: F22B3/02
Filed: 1923-11-23
Abstract: 223,426. British Thomson-Houston Co., Ltd., (General Electric Co.). Nov. 23, 1923. Vapour engines. - A vertical tubular boiler of the honeycomb type. for generating vapour from liquids such as mercury, comprises smoke - tubes 16 arranged in contact for the greater part of their length under the surface of the liquid so as to reduce the space for liquid between adjacent tubes. Horizontal clearance spaces 36 are formed around the bottom of the tubes 16. A proportion of the tubes, preferably one 17 in the centre of each group of six, are constructed to permit the down flow of liquid. Linecontact only is provided between adjacent tubes, by making the opposing faces slightly convex. Provision may be made for increasing the vertical circulation spaces 37 for the liquids from the points of contact of the tubes upwards as shown in Fig. 3.
Patent GB-210513-A (GB)
Title: Improvements in and relating to sockets for rotary tools
IPC: B23B31/107
Filed: 1922-10-31
Abstract: 210,513. Stanworth, A. Oct. 31, 1922. Sockets. - A socket for holding rotary tools is provided with a short tapering recess for receiving the tool shank A<1>, and carries at one side a rigidly fixed pin C which engages a longitudinal slot in the shank. The hole B<2> for the pin is counterbored at each end to receive an enlarged head C<1> and a rivetted end C<3>, the end C<3> being made flush with the socket by solder. The hole may be bored and the pin inserted through a hole B<a>, which is also filled with solder. A tapered hole B<3> provides for an ejecting pin.
Patent GB-921989-A (GB)
Title: Guide tracks for use in the production of tread strips for pneumatic tyres
IPC: B29D30/52
Filed: 1961-08-18
Abstract: 921,989. Guiding tyre-tread strips. CONTINENTAL GUMMI-WERKE A.G. Aug. 18, 1961 [Jan. 4, 1961], No. 29835/61. Class 144 (1). Unvulcanized tyre-tread strips 1 are fed to a tyre-building drum by a guide track comprising pairs of profiled upper guide rollers 4 and a plurality of lower support rollers 2, the rollers 2 being mounted so that their axles 6 are movable axially in their associated bearings 7 to alignment of the strip by the rollers 4 without deformation. As shown, the endwise movement of each roller 2 is resisted by a spring 8 between each end face of the roller and the associated bearing. The rollers 4 are fixed against endwise movement but are angularly adjustable to bear against and conform to the shoulder regions of the tread strip. The roller 2 at the end of the track, adjacent the building drum, may be fixed against axial movement.
Patent GB-262121-A (GB)
Title: Improvements in moulds of the reversible type for casting metals
IPC: B22C9/06
Filed: 1926-11-25
Abstract: 262,121. Liers, F. Nov. 25, 1925, [Convention date]. Moulds; clamping moulds.-A reversible mould is comprised of adjustable sections so that its size may be varied. The gate plate c is trunnioned at d to a base a and has a sprue-cutter g', Fig. 2. One of the sections f is fixed to the plate c the other three sections f<1>, f<2>, f<3> are adjusted by hand levers e, which are also used to open the mould after casting. After adjusting, the sections are fixed by setscrews i, a pattern or original is placed in the mould positioned as in Fig. 1 and a negative casting made. The original is then removed the mould inverted with the negative in position and one or more positives are cast, using the gate g. The Specification as open to inspection under Sect. 91 (3) (a) states also that the shape of the mould may be varied. This subject-matter does not appear in the Specification as accepted.
Patent GB-597684-A (GB)
Title: Chain dredge buckets and method of forming
IPC: E02F3/12
Filed: 1945-11-09
Abstract: 597,684. Making dredger buckets. TRIGGS, W. W. (Taylor-Wharton Iron & Steel Co.). Nov. 9, 1945, No. 29904. [Class 83 (ii)] [Also in Groups XXI and XXXIV] A method of making a lined rear eye of a chain dredger bucket comprises casting the bucket with a rear eye 6 which is substantially circular in cross-section, maching grinding the interior wall of the eye, forming an approximately semi-circular stop member 9 having abutment end surfaces of the full width of the eye, dove-tailing the stop member with the forward part of the eye at 10, 11 and finalling inserting in the rear portion of the eye an approximately semi-circular renewable bearing bushing 8 with its end surfaces in abutting relation to the end surfaces of the stop member. The outer ends of the key 11 and lining member 9 are bevelled at 12 and the pocket so formed is filled with welding material 13 to prevent longitudinal movement of the stop member.
Patent GB-1032971-A (GB)
Title: Plastics container assembly machine
Inventor: BROWN GAYLORD W
IPC: B29C65/52
Filed: 1963-07-29
Abstract: 1,032,971. Rotary conveyers. BROWN MACHINE CO. July 29, 1963 [Aug. 1, 1962], No. 29962/63. Heading B8A. [Also in Division B5] In a machine for joining generally cylindrical open-ended plastics container shells 13 to bottom portions 14, the shells 13 are carried along a conveyer belt 20 and are transferred by means of a wheel 93 on to pedestals 28 of assemblies 29 which are radially spaced on a rotary table 17 and which each have a gluing mechanism 18 associated with and above them. Each pedestal is surrounded by a tube 34 attached to a disc 35 and as the table 17 rotates each tube is moved upwardly by a roller 38 which moves on the upper surface 37a of a cam member 37 so that the top edge 34a of each tube engages the shell on the corresponding pedestal. This raising of the shell actuates the gluing mechanism 18 and at the same time the disc 35 engages a fixed belt 44 and begins to rotate together with the tube 34 so that glue is applied all around the inside top edge of the shell 13. The machine is arranged so that, if no shell is delivered to a pedestal the gluing mechanism associated with that pedestal is not rendered effective, even though the tube 34 rotates. The shells 13 are then delivered off the table 17 back on to the conveyer belt 20 by a wheel 94 and are carried to another wheel 110 (Fig. 1, not shown) which delivers them on to assembly means 125 radially spaced on a rotary table 19 and each having a similar construction and action to the assembly 29. Similarly, the bottom portions 14 are carried upside-down, along a conveyor belt 22 and delivered by a wheel 109 to further assembly means 125<SP>1</SP>. As the table 19 then rotates the two assembly means are brought together by rollers 127, 127<SP>1</SP> which move along cam tracks and the shells 13 and bottom portions 14 are thus sealed together. Finally, the finished article is transferred back on to conveyer belt 20 by a wheel 166.
Patent GB-631858-A (GB)
Title: Method for producing printing plates
IPC: B41N1/10
Filed: 1947-11-11
Abstract: 631,858. Electrodeposition of chromium. ESSELTE AKTIEBOLAG. Nov. 11, 1947, No. 30007. Convention date, Dec. 23, 1943. [Class 41] A method of producing sheet-metal plates adapted to be used in producing planographic printing plates for wet offset printing, having water-receptive chromium non-printing areas, comprises clamping a thin sheet-metal plate of a metal having relatively high resistivity equal to or higher than that of zinc, on to a thicker base of a metal having higher specific conductance than that of zinc, such as copper, and then electrolytically depositing a thin, hard and porous coating of chromium on the sheetmetal plate. The base may be a tubular core the wall of which has a considerable thickness as compared with that of the sheet-metal plate. The sheet-metal plate may be copper-plated before being chromium-plated.
Patent GB-1220790-A (GB)
Title: A device for tensioning slack yarn on weft-knitting machines
Inventor: KUBELKA ALOIS
IPC: D04B15/38
Filed: 1969-06-13
Abstract: 1,220,790. Knitting-machines. VYZKUMNY USTAV PLETARSKY. 13 June, 1969 [27 June, 1968], No. 30022/69. Heading D1C. A yarn tensioning device situated between the bobbin supply and the yarn guide of the machine comprises a cylinder 1 housing a piston 5 having an eyelet through which the yarn passes in order to support the piston. A device 4 creates a vacuum in the lower end of the cylinder to influence the piston 5 and thereby affect the tension in the yarn. A valve 3 may serve to vary the effect of the device 4. The yarn in passage through the tensioning device passes between tensioning discs 10 and over guiding surfaces 8 on the upper end of the cylinder. A guide rod 12 hooked on the end of the cylinder engages a vertical groove in the piston to guide the latter and is provided with a turned in end 14 to act as a stop.
Patent GB-188334-A (GB)
Title: Improvements in or relating to electrical heating apparatus for crucible heating of type bar making machines
IPC: H05B3/64
Filed: 1922-11-02
Abstract: 188,334. Mozzali, O. Nov. 3, 1921, [Convention date]. Metal - pots. - Apparatus for heating the crucibles of type bar making machines comprising an immersible heater, a rheostat mounted therein, a second heater arranged at the crucible outlet and a controlling 'box containing contacts connected to the rheostat and heaters, is provided with manually operated means whereby the current in each heater can be regulated independently. The immersible heater, Fig- 2, is formed by a nickel chrome wire 1 wound upon mica plates and covered at each side by further mica plates, the resistances being held in place by thin steel borders 2 and encased in a semi-cylindrical sheath of non-oxidable steel. The ends 4, 5 of the resistance are carried along an extension 3 to terminals enclosed in a box formed by the sheathing and having an alu. minium cover. The external connections for the terminals are encased in a flexible. metal tube. The heater for the crucible outlet, Fig. 9, comprises a nickel chrome conductor 14 wound on four mica plates 15 and covered at each side by further mica plates, the whole being encased in a metal sheathing 19 having a connection box 22 containing the terminals to which the ends of the resistance wire are secured. The rheostat 32 is constructed similarly to the immersion heater 6 and is located therein as shown in Fig. 19. The resistance is divided into five steps by means of the leads A, 28, 29, 30, B which pass through the flexible tube 38. The controlling box, Fig. 20, comprises an aluminium box 39 in which is mounted a slate disc 40 carrying a rubber stud 41, five metal studs 42 - - 46 and pivoted arms 48 having insulated handles and bronze contact bushes. The arms 48 and the metal studs are connected to terminals mounted on the slate disc, these terminals being connected to a similar number of terminals in a collecting-box provided with additional terminals for the leads from the heaters and the rheostat. The diagram of the electrical connections is shown in Fig. 24 in which 51 indicates the immersion heater, 52 the outlet heater, 53 the rheostat, 54 the controlling box, 55 the collecting-box, 56 a twopole rotary switch and 57 the fuses.
Patent GB-174433-A (GB)
Title: Alcoholic solutions of animal proteins and methods of preparing same
IPC: A23J1/02
Filed: 1920-10-23
Abstract: A substance rich in undigested animal protein, for instance minced lean meat, is treated with a dilute alkali and filtered, the filtrate being then slightly acidified.  The protein thus precipitated is filtered off, redissolved in dilute acid, and mixed with an alcoholic liquid such as whisky, brandy, or sherry. The product may be flavoured with oil of lemon or capsicum.  In the treatment of the meat with alkali such as sodium carbonate solution, the mixture may be mechanically stirred and heated to not more than 40 DEG  C.  It may be strained through fine muslin; a centrifugal separator may be used, and the liquid may finally be filtered through asbestos wool. Hydrochloric or glycero-phosphoric acid may be used for dissolving the precipitated protein.  According to the Provisional Specification, caustic soda is used instead of sodium carbonate.
Patent GB-411363-A (GB)
Title: Improvements in boiler flues
IPC: F23M9/00
Filed: 1933-10-30
Abstract: 411,363. Water chambers in steam boiler flues. GAUTZSCH, R., 44, Rosental, Meerane, Saxony, Germany. Oct. 30, 1933, No. 30105. [Class 123 (ii).] A boiler flue is formed of two aligned portions b connected together by one or more flue gas conduits a each of' which is helically twisted about the longitudinal axis of the flue and contacts over the whole of its external surface with the water in the chamber.
Patent GB-501263-A (GB)
Title: Improvements in or relating to semi-stiff collars or cuffs
IPC: A41B3/00
Filed: 1938-10-18
Abstract: 501,263. Collars and cuffs. ,FRANKLAND, R. Oct. 18, 1938, No. 30153. [Class 141] A semi-stiff collar blank of material woven on the straight has its band portion 2 cut with a curved outer edge 1, the band portion 2 being folded on itself about the median line 5-5, and the parts stitched together as at 6, the collar top 3 being folded about the curved line 4 formed by the edge of the portion 2. The invention is also stated to be applicable to cuffs.
Patent GB-1326349-A (GB)
Title: Ammunition packages
IPC: F41B/
Filed: 1971-06-28
Abstract: 1326349 Projectile dispensing device IN. DUSTKIAS EL GAMO SL 28 June 1971 [2 July 1970] 30243/71 Heading F3A A dispensing device for loading the magazines of pneumatic arms comprises a plurality of cylindrical plastics tubes 1 for containing the projectiles 6, and a web 2 connecting the tubes together. The tubes may also be interconnected by additional severable webs (not shown). Plugs 5 close the tubes. In use, a tube is severed from the web and the open end of the magazine is introduced into the mouth of the tube after removal of the plug.
Patent GB-521550-A (GB)
Title: Improvements in and relating to colour forming developers and processes of colour development
IPC: G03C7/36
Filed: 1938-10-20
Abstract: 521,550. Colour photography. GEVAERT PHOTO-PRODUCTEN N. V., and MERCKX, P. L. J. R. Oct. 20, 1938, No. 30328, [Class 98 (ii)] A colour former for colour development is a derivative of general formula A-CO-CH 2 -CONXX 1 , where A is methyl substituted or not and X and X' are aromatic nuclei substituted or not. An example is acetoacetodiphenylamine. The colour former may be in the silver salt emulsion or in the developer. The developing agent may be a mono-, di- or tri-amino aryl compounds, including aromatic o- and p-diamines such as pphenylenediamine, diethyl-p-phenylenediamine, dimethyl-p-phenylenedianine, monoethyl-pphenylenediamine and 3 - amino - 6 - dimethyl - amino-toluene and including aminophenols and aminocresols and their halogen derivatives and aminonaphthols. Two colour developing formulae are given. The developed silver may be removed by a bath comprising potassium ferricyanide and sodium thiosulphate. The colour former may be added to the emulsion before or after coating, for example by absorption on the silver salts. The colour developed images may be produced on plates, films or papers having one or more emulsion layers on one or both sides of the support and employing gelatine or other substance as the emulsion binder. The colour formers may be added to the developing bath without previous solution or may be added in solution in acetone or in alcohols such as methanol.
Patent GB-1321077-A (GB)
Title: Apparatus for electrolytically etching a workpiece
IPC: B23H3/02
Filed: 1970-06-23
Abstract: 1321077 Electrolytic machining MITSUBISHI ELECTRIC CORP 23 June 1970 [24 June 1969] 30492/70 Heading C7B [Also in Division G3] In a method of electrolytically etching a workpiece, the working voltage, the relative rate of movement of the workpiece and electrode towards each other, and the working current are monitored and controlled, and control of the relative rate of movement is automatically shifted from the constant current density mode to the constant current mode after a settable maximum working current is reached. As illustrated, the etching electrode is moved towards the workpiece at a constant speed while maintaining the working voltage constant (thereby operating at constant current density) until a predetermined working current is reached. The rate of movement is then automatically slowed down so that operation is at constant current. As shown, a  workpiece 10 is electrolytically etched by means of an electrode 12 through which electrolyte is supplied to a gap 14. The electrolyzing current is supplied from a source 22 via a saturable reactor 28, transformer 24 and full wave rectifier 26. The electrode 12 is moved towards the workpiece by a motor 62. The motor is controlled by signals Ufs and Ut from sources 104 and 102 which operate to keep the motor speed constant. The working current is monitored at 116 and when the predetermined current valve is exceeded a zenor diode 138 operates and a signal Vi is generated. This signal is fed to a comparison circuit 140 and operates to slow down the motor 62. During the constant current density working, the electrolytic working voltage is maintained constant by means of signals U and Us which are derived from sources 208 and 204 and control the operation of the saturable core reactor 28. However, when the zenor diode 138 operates and there is a change to constant current working, a signal Ui is fed to a comparison circuit 300 to reduce the working voltage and so compensate for an increase in the working gap which would otherwise result from the slowing down in the movement of the electrode 12. (This compensation is omitted from the embodiment illustrated in Fig.2, (not shown). Specified working conditions are a working gap of 0À1-0À5mm, a working voltage of 5-20 volts and a working current of 1000-5000 amps.