baber/WOPTO huggingface dataset:
Patent GB-677541-A (GB)
Title: Improvements in propelling pencils
IPC: B43K21/16
Filed: 1949-08-29
Abstract: 677,541. Propelling pencils. KOH-I-NOOR L. & C. HARDTMUTH, NATIONAL CORPORATION. Aug. 29, 1949 [Sept. 14, 1948], No. 22417/49. Class 146 (iii). A propelling pencil of the kind operated by a push-cap and provided with a gripper for holding the lead which upon release from the gripper can slip forwards or backwards under the action of gravity according to the position of the pencil is characterized by a movable ring 11 which when pressed sufficiently far downwards by the end face 7 of the gripper 6 can force the split bore of the tip 1 apart and so allow a lead to pass freely through to or from a storage space within the pencil. The grippers 6, movable downwardly against the action of a spring 5 by the push-cap (not shown), are normally clamped by a slidable clamping sleeve 12 moved a certain distance with the grippers G when they are pressed downwardly, the downward movement of the sleeve. being limited by a flange 15 which engages an adjustable ring 14. When the grippers 6 are released from the sleeve 12, a lead may drop through the grippers on to the upper end of the base in the tip 1. Release of the push-cap causes the gripper 6 to be clamped by the sleeve 12. A further depression of the push-cap causes the lead to be projected through the bore of the tip a definite amount depending on the position of the ring 14, while each successive depression causes a similar projection.
Patent GB-293223-A (GB)
Title: Improvements in or relating to means for sharpening rotary knives
IPC: B24B3/44
Filed: 1927-08-26
Abstract: 293,223. Engels, H. Aug. 26, 1927. Cutting-edges, shaping and treating.- A knife b having a curved edge of non-circular form is sharpened by a wheel a against which the blade is held by means of a support c, which is rotatable and slidable in a slot in a frame h, and carries a plate d carrying a templet e of the shape of the blade edge. The templet rests on a roller k carried by the frame and the support c is rotated through a spur wheel n, a spur wheel o carried by jointed arms r, and a pinion p gearing with a rack q. The frame h, in operation, is slid to and fro on a slide s for example, by a screw, the knife thus rotating and rising and falling whilst the sliding motion across the grinding face ensures uniform wear thereof.
Patent GB-1224282-A (GB)
Title: Improved motor grader machine
Inventor: HAMPTON ANDREW VAUGHN
IPC: E02F3/76
Filed: 1969-05-02
Abstract: 1,224,282. Grader vehicle suspensions; articulated earth-working vehicles. ALLISCHALMERS MFG. CO. 2 May, 1969 [9 May, 1968], No. 22501/69. Headings B7D and B7H. [Also in Division E1] A motor grader comprises a rear tractor unit 12 connected about an upright axis 23 to a grader tool-carrying boom 13 in turn connected about an upright axis 32 to a wheeled bogie 14. The bogie 14 is swingably supported about a  longitudinal axis 37 on the housing 94 of the  axle 96 of the bogie 14. A drive to the axle 96 extends from the motor of the tractor unit through the beam and down along the axis 32 of the hitch 31 between the beam and the bogie. The axle 96 is connected to input shafts of planet gearings 97 coupled to wheels 52 of the bogie. The wheels 52 turn about mountings 54 having part spherical couplings with the housings 57, 58 of axle 96. The part-spherical couplings allow of pivoting of the mountings 54 by jacks 64, 66 about longitudinal axes 61, 62.
Patent GB-702391-A (GB)
Title: Ratchet mechanism for plug valve lubricators
IPC: F16K5/22
Filed: 1950-09-13
Abstract: 702,391. Lubricating. HENWOOD, A. B. Sept. 13, 1950, No. 22531/50. Class 12(3) [Also in Group XXIV] In an attachment for a plug valve of the type in which bearing surfaces of the valve are lubricated by a lubricant forced from a lubricant chamber in the valve stem by a pressure member threaded axially into and projecting from the valve stem, means are provided for varying the quantity of lubricant delivered on actuation of the valve handle. A ratchet wheel 22 is secured to the end of the pressure member 20, and has a central projection 24 on which is rotatably mounted a cam 25 and an adjusting plate 26 having an arm 31 with a head portion 32 which slidably engages a square bar 13 attached to the end of the valve operating handle 16. A spring pressed pawl 33 is slidably and pivotally mounted on a bar 12 secured to the top 11 of the valve plug. An upper bifurcation 34a of the pawl engages the cam 25 and a portion 42 of the pawl engages the ratchet wheel teeth when the portion 25a of the cam is opposite the pawl. The cam 25 is adjustably secured to the adjusting plate 26 by means of a screw 27 and wing nut 29, so that the period of engagement of the pawl 42 with the ratchet wheel 22, and thus the rotation and hence axial movement of the pressure member within the valve stem, may be varied.
Patent GB-689676-A (GB)
Title: Manufacture of storage battery grids from sheet lead or lead alloy
IPC: B21D47/00
Filed: 1951-09-27
Abstract: 689,676. Making battery-plates. GENERAL MOTORS CORPORATION. Sept. 27, 1951 [Oct. 11, 1950], No. 22557/51. Classes 83 (ii) and 83 (iv). Perforating; embossing.-In making storage battery plates &c. from lead &c. sheets the portions to be removed are embossed in the sheet and the raised portion is then pressed back into the plane of the sheet to break the flashing and to separate the parts. The sheet 26 is embossed between dies fitted with a stripper, Fig. 1 (not shown), to raise a pattern 50 to be removed. The embossed sheet is then pressed between flat reciprocated platens 44, 46 to sever the two parts of the sheet. The embossing punches 37 are of larger diameter than the top of the conical embossing die 34 to facilitate the rearward expulsion of the embossment 24 through the hole made by the punch 37.
Patent GB-1204650-A (GB)
Title: Improvements in or relating to solid state circuit breakers
Inventor: PRITCHARD GEORGE WELLESLEY
IPC: H02H11/00
Filed: 1967-08-31
Abstract: 1,204,650. Protective arrangements. BOOTH ENG. Ltd. 31 Aug., 1967, No. 22563/70. Divided out of 1,202,204. Heading H2K. A solid state overload-responsive A.C. circuit-breaker comprises a silicon controlled rectifier TH3 connected across the D.C. terminals of a rectifier bridge D17 . . . D20 connected in series with current sensing means T3 and the load RL to be protected. A pulse generator Q1, T1 is connected to the gate of the rectifier TH3 and is controlled by a first control circuit 1 having "ON" and "OFF" switches SW1, SW2 and a second control circuit 2 responsive to an output signal from the current sensing means to switch off the pulse generator and having a reset switch 8W3. As shown, the output of a current transformer T3 is rectified by a bridge rectifier D3 ... D6 and applied through a delay circuit R25, R26 and C5 to a Schmitt trigger Q6, Q7 which is connected to the base of a transistor Q5 in the control circuit 2. When Q5 is rendered conducting, a controlled rectifier TH2 conducts to stop the pulse generator Q1, T1. A bridge rectifier with a silicon controlled rectifier may be provided for each conductor of a single phase circuit as shown or for each phase of a polyphase circuit. A test switch 5W4 may be provided.
Patent GB-323766-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J9/395
Filed: 1928-08-03
Abstract: 323,766. Dieker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Aug. 3, 1928. Vacuum tubes.-In the method of inserting caesium or other alkali or alkaline-earth metal in high-vacuum or gas-filled tubes by the reduction of a compound of the metal within the tube, the reducing-agent consists of one or more of the metals zirconium, hafnium, or titanium, as in the process described in Specification 323,718. The alkali or alkaline-earth metal may form all emissive layer on. the incandescent cathode, or act as a getter or to reduce the cathode drop. The zirconium, hafniu.m, or titanium also act as getters. The compounds used may, for example, be the oxides, hydroxides, nitrates, sulphates, bisulphates, or bichromates, and may be inserted in a perforated capsule of the reducing-metal. The mixture of metals and compounds may be introduced as a powder or in the form of small rods or pastilles, and may be heated by means of eddy currents or by conduction from the electrodes or by heating the tube directly.
Patent GB-940011-A (GB)
Title: Friction clutch
IPC: F16D43/21
Filed: 1962-06-12
Abstract: 940,011. Friction clutches. J. WALTERSCHEID, and B. WALTERSCHEID-MULLER. -June 12, 1962 [Sept. 26, 1961], No. 22623/62. Heading F2C. In a slipping clutch the friction disc 2 is engaged by a pressure plate 3 loaded by a prestressed dished spring ring 6 having a " negative " or " dropping " load characteristic over its operating range, balls 9 being mounted between camming recesses in rings 19, 20 engaging the inner periphery of the spring 6 and an outer plate 21 respectively, the spring characteristic and form of camming recess being so chosen as to give a substantially constant torque under slip. In addition an auxiliary spring ring 24 is provided, having its inner edge secured to the plate 21 and its outer edge engaged by nuts 26 on bolts 23 passing through the pressure plate 3, adjustment of the nuts varying the force exerted by the spring 24 on the plate 3 to compensate for variation of pressure between the clutch discs due to wear. The auxiliary ring 24 may be replaced by a series of axially disposed helical springs, Fig. 3 (not shown). Release levers 14 are operated by collars 11, 15.
Patent GB-1043905-A (GB)
Title: Improved automobile seat cover
Inventor: SHILCO BERNARD ELI
IPC: A47C31/11
Filed: 1964-06-01
Abstract: 1,043,905. Seat covers. SHILWEAR Ltd. Aug. 31, 1965 [June 1, 1964], No. 22628/64. Heading A4M. A vehicle seat cover comprises one or more layers 2 of tufted pile fabric covering the seat and backrest areas, edge panels 6, 10, 12 of non-textile material, e.g. of polyvinyl chloride leathercloth, sewn or welded to the fabric layers 2, a layer 4 of transparent synthetic plastics material, e.g. polyvinylacetate, covering the pile fabric, and means for securing the cover over the seat. Piping 16 is sewn to the corner edges of the cover which includes a back cover panel 8. The cover extends to beneath the seat to be secured by elasticated tabs 18 tied by cord or tape to the seat springs. Alternatively the. entire bottom edge of the cover could be elasticated.
Patent GB-969089-A (GB)
Title: Nuclear reactor safety rod
Inventor: ABLITT JOHN FREDERICK
IPC: G21C7/16
Filed: 1962-06-13
Abstract: 969,089. Controlling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 24,1963 [June 13, 1962], No. 22683/62. Heading G6C. A reactivity controlling body is immersed in fluid coolant in a guide tube passing through a reactor core and is biased towards a position in the core, but is supported against the bias by coolant flow through the guide tube in a position of less controlling effect. A graphite core 11 has fuel channels 12 and one or more guide tubes 14 through which flows a coolant, such as helium. Upper and lower grids 15, 17 limit movement of the control body 16, in this case a neutron absorbing rod. Minor oscillations in coolant flow will not cause the rod 16 to move significantly, but should the flow be severely reduced or completely stopped, the rod 16 will drop on to the lower guide 17, and shut down the reactor. It is preferable to  employ other control rods so that the reactor is not automatically rendered critical by commencing coolant circulation. The invention may also be used in conjunction with water or other liquid cooled reactors. Specification 907,394 is referred to.
Patent GB-171144-A (GB)
Title: Improvements in or relating to the manufacture of an aggregate or material utilisable for making molded articles and the products obtained therefrom
IPC: C04B20/06
Filed: 1920-07-30
Abstract: 171,144. Jackson, W. J. Mellersh-, (American Aggregate Co.). July 30, 1920. Concretes &c.-An aggregate for concrete or mortar for making bricks, &c., paving &c., or plastering &c. consists of a rough clinker which is not porous, but of cellular formation and produced by heating argillaceous material for a short period, for example, two hours at a. suitable temperature. says 1700-2500 F. Material generally unsuitable for brick-making such as clay, shale, shale rock. mixed or not with gravel, sand, lime, &c. is broken to pass a 4-inch screen and burnt in a rotary or other kiln at a temperature above 1500 F. until it swells. The burning must not be continued until shrinkage of the material takes place. Preferably, the material is subjected to the maximum temperature at the outset, the subsequent burning being conducted at a lower temperature. The material is allowed to cool and is crushed to a convenient size, water being added at this stage if necessary to slake any free lime. The resulting particles are mixed with cement, lime &c. and moulded into bricks &c. or otherwise employed as concrete &c. Reference has been directed by the Comptroller to Specification 153,030.
Patent GB-336687-A (GB)
Title: An improved method of, and means for, reducing friable materials
IPC: B02C4/30
Filed: 1929-07-24
Abstract: 336,687. Keet, G. C. E. Julv 24, 1929. Roller and roller-and-breast mills.-Friable material is reduced by being fed between the concave and convex grinding surfaces of two grinding rolls one of which is oscillated continuously in the direction of the other. The roll 6 is continuously oscillated in the direction of the roll 5 by means of toggle-links 15, 16 operated by an eccentric 11 through a lever 12 and link 13. The roller 6 is mounted on a pivoted arm 10 and the lever 12 has an adjustable fulcrum 20 which may be moved by a screw 21 to vary the travel of the roller 6. The roller 5 is mounted on a shaft supported in bearings 7 and is driven by gear wheels 8<a> from a shaft 9 on which the eccentric 11 is mounted. The rollers 5, 6 are concave and convex respectively and the toggle 15, 16 reacts against a spring 18 secured to the frame of the mill.
Patent GB-615362-A (GB)
Title: Improvements in handles for actuating cable control mechanisms
IPC: B62L3/02
Filed: 1946-07-31
Abstract: 615,362. Cable-control mechanism. SOMVILLE, C. July 31, 1946, No. 22788. Convention date, Feb. 28. [Class 136 (i)] A handle for actuating cable-control mechanism comprises a single hand-grip member 2 having an S-shaped head, and a casing therefor, the hand-grip member being retained in position in the casing by the control cable 4 arranged about the S-shaped head which has curved entry and exit surfaces receiving the cable in parallel directions. A projection 7 is formed on the hand grip to bear on the casing when the hand grip is in its lower limiting position. The casing comprises a collar 8 surrounding the handle-bar 10 and having two spring blades 9 welded or riveted to its extremities. Tongues 11 are provided at the base of the blades 9 and fit into slits 12 pierced in the bottom of a housing 1. Tongues 13 on the blades 9 press against the handle-bar 10.
Patent GB-205471-A (GB)
Title: Improvements in or relating to prime movers
IPC: F03G7/10
Filed: 1923-09-11
Abstract: 205,471. Sohroeder, F. Oct. 16, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Cam gears.-In a self-driving engine, a valve 34 is actuated by a pair of links 46, 47 con. nected to spring-controlled levers 42, 43, which are both pivoted at 44 and are operated by cams 39, 40 set diametrically opposite one another on the shaft 16. The link 46 is arranged to lower the valve 34 and the link 47 to raise it, slots 48 allowing idle motion so that the valve remains always at one end or the other of its stroke.
Patent GB-1533893-A (GB)
Title: Cam follower device for index drive system
IPC: F16H53/06
Filed: 1976-06-02
Abstract: 1533893 Cam followers EMERSON ELECTRIC CO 2 June 1976 [23 June 1975] 22820/76 Heading F2K To increase the load-carrying capacity of a roller cam follower assembly for high speed operation of an index mechanism (not shown), the, or each (Fig. 1), cam follower roller 40 is formed with a pair of trunnions 42, 43 protruding one each side of a central roller portion 41, and being yoke-mounted in adjacent flanges 5, 6 of a carrier 4, the trunnions 42, 43 being journalled in antifriction bearings (needle roller type shown) 44, 45 in the flanges 5, 6, which bearings are retained therein by closure members 46 held in place by staking at 47. In Fig. 1 the roller 41 is of larger diameter than the bores housing the bearings 44, 45 in the flanges 5, 6 and 6, 7 and accordingly, the carrier 4 is constructed as a built-up unit for ready assembly of the stepped, i.e. trunnion, rollers 40. In Fig. 4, the bearing bores are larger than the roller 400 whereby the roller and its associated trunnions 442, 443 and needle bearings 444, 445 are axially assembled through the bearing bores and retained in position by circlips 447. In an alternative embodiment (not shown) one bearing bore in one flange is larger than the roller assembly whereby the roller assembly, i.e. roller and needle bearings &c., may be assembled through this larger bore which is then bushed to accommodate the needle bearing associated therein. In Fig. 5, the roller assembly comprises an annular roller 500 in which a cylindrical pin is press-fitted in situ to form the projecting trunnions 543, 544, the needle bearings 545 being assembled on the trunnions in the bores 510 and, as before, retained therein by staking at 547.
Patent GB-1155547-A (GB)
Title: Azo Dyes
IPC: C09B44/04
Filed: 1967-05-17
Abstract: 1,155,547. Benzthiazole compounds. ALLIED CHEMICAL CORP. 17 May, 1967 [18 May, 1966], No. 22882/67. Heading C2C. [Also in Division C4] In Examples 1 and 2 the compounds of Formulµ VIII and IX are prepared.
Patent GB-443002-A (GB)
Title: Process for improving the chemical stability of light-metals and alloys thereof
IPC: C23C22/66
Filed: 1935-08-14
Abstract: To increase the chemical resistance of light metals and alloys thereof and to improve the adhesion of paints thereon, an oxide surface is produced thereon by alternating treatments with gaseous ammonia and aqueous ammonia solution.
Patent GB-277175-A (GB)
Title: A new or improved potter's drying stove applicable also as a drying stove for other purposes
IPC: F26B15/04
Filed: 1926-09-18
Abstract: 277,175. Beardmore, F., and Boulton, Ltd., W. Sept. 18, 1926. Drying-furnaces; charge supports. - A drying apparatus, adapted particularly for drying moulds, is provided with inner and outer independently-rotatable. charge carriers X. Y, the former being mounted directly on a vertical shaft a and the latter carried by arms g which are. scoured to a bearing h on the upper end of the shaft a and provided on their outer ends with rollers y running on a circular track k. The carriers X, Y are fitted with shelves b, p respectively, the latter being omitted from one section of the outer carrier Y to form an opening m, Fig. 2, through which an operative, entering a doorway s in the outer casing n, can pass to load and unload the inner carrier X. According to the Provisional Specification there may be provided two outer carriers Y each formed with an opening m and rotatable independently of each other or as a single unit.
Patent GB-1076561-A (GB)
Title: Method of depositing epitaxial layers of compound semi-conducting materials
IPC: H01L21/205
Filed: 1964-06-03
Abstract: In the formation of a semi-conductor an epitaxial layer of a compound of a volatizable metal and a more volatizable non-metal is deposited on a mono-crystalline substrate made of the same compound or a different compound with similar crystal lattice constants by reacting in a stream of carrier gas vapours of the metal and a halide or halogen capable of forming by the reaction on equilibrium mixture including the metal, a lower and a higher halide of the metal, vaporizing a quantity of the non-metal in a stream of carrier gas mixing the two streams of carrier gas at above the selected growth temperature to the equilibrium mixture with the non-metal, and passing the heated mixture of vapours over the substrate heated to the selected growth temperature.  The epitaxial layer may be gallium arsenide, phosphide or indium antimonide, phosphide. The halide may be liquid e.g. gallium trichloride or gaseous e.g. hydrogen chloride. In Fig. 1 (not shown), an air tight reaction system is first flushed out with helium to remove air or oxygen.  Hydrogen is bubbled through bubbler 14 containing gallium trichloride maintained at 85 DEG  C. and diluted with a stream of hydrogen before flowing over molten gallium in boat 40 in reaction-tube arm 4 maintained at 750 DEG  C. to 850 DEG  C.  Hydrogen entering through 24 flows through arm 6 maintained at 400 DEG  to 450 DEG  C. and containing arsenic as pieces or as a coating on the reaction tube walls.  The gaseous streams from arm 4 and arm 6 are mixed at the reaction tube T-junction maintained at 800 DEG  C. and passed over gallium arsenide substrate wafers 44 maintained at 600 DEG  to 760 DEG  C. and having a major face in say the 100 plane.  Unreacted vapours are vented through outlet tube 46.  The layer is N-type if the arsenic is kept below 455 DEG  C., the hydrogen flow rate over the arsenic is 230 cc/min. and the flow from the gallium zone is 260 cc/min. of hydrogen.  The growing layer may be doped P-type e.g. with zinc doping agent or N-type utilizing sulphur or selenium.  Zinc may be mixed with gallium in boat 40, or a zinc salt, such as zinc chloride, may be placed in side-arm 6 adjacent the arsenic and maintained at 100 DEG  to 300 DEG  C. or the temperature varied to obtain a graduated doping profile.  Sulphur doping may be accomplished by passing a stream of hydrogen containing S2Cl2 vapour through 28 into arm 6 or hydrogen sulphide diluted with hydrogen may be used.  The partial pressure of the more volatile constituent of the compound over the growing layer may be regulated by controlling the temperature of the source of the volatile substance e.g. the arsenic source, to prepare layers with resistivity gradients, or predetermined uniform resistivity, or produce active PN junctions within the layer.  Epitaxial layers of gallium phosphide were grown on gallium phosphide substrates, red phosphorus being substituted for the arsenic.  Other halogens and halides can be substituted for chlorides e.g. elemental iodine, bromine, and HI or HBr.
Patent GB-1221977-A (GB)
Title: Multi-cavity klystron
IPC: H01J25/20
Filed: 1968-05-15
Abstract: 1,221,977. Klystrons. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 15 May, 1968 [18 May, 1967], No. 23121/68. Heading HID. A multi-cavity klystron having at least two electrostatic beam-focusing systems includes also a magnetic beam-focusing system which is operative over that region which includes the drift tube preceding the last cavity and extends therefrom to the collector electrode. In the four-cavity klystron shown, an electrostatic focusing arrangement 27, held at cathode potential, is mounted in each of the drift tubes 5, 17 and 18, and either an electromagnet or permanent magnet focusing arrangement 22, 23 extends over drift tubes 19 and 20 and gaps 15 and 16, both the inner flanges 11 and 12, and the outer circumferential walls 24, of the final two cavities being of soft iron to concentrate the field. Preferably, also, the entrance to the collector 25 is surrounded by a soft iron annulus 26.