baber/WOPTO huggingface dataset:
Patent GB-935068-A (GB)
Title: Improvements in or relating to a mounting for a power-driven tool
IPC: B23B45/14
Filed: 1959-06-20
Abstract: 935,068. Drilling machines. J. H. ALEXANDER, and H. ALEXANDER. July 8, 1960 [June 20, 1959], No. 21231/59. Class 83 (3).  An electric drill 10 is secured to a sleeve 14, slidably mounted on a column 13 and is fed by means of a pump 22, actuated by a lever 24, which supplies anhydraulic ram 25, connected to the drill and the support, the drill being returned by a spring 19. Oil is supplied from a plastic or rubber container 20 through a conduit 26 into the pump, the latter having a piston 28, non-return ball valves 29, 30, and oil passages 32. The oil is then pumped through a conduit 27 into a hollow piston-rod 36 in the ram 25, and thence to the top side of a piston 34. In a modification, Fig. 4, the ram 25A is secured to the column 13A by a clamp 37, and return springs 39 are connected to a clamp 15A securing the drill to the sleeve 14A, and the pump 22A is secured to the sleeve by a clamp 41 with the operating handle 24A directly mounted on the pump. More than one ram may be supplied and the drill may be secured in a horizontal direction.
Patent GB-674307-A (GB)
Title: Improvements in electrode holders for electrodes for electric arc welding
IPC: B23K9/28
Filed: 1950-08-28
Abstract: 674,307. Arc welding electrode holders. LAUKVIK, H. Aug. 28, 1950 [Feb. 25, 1950], No. 21268/50. Class 39(iii) An insulated arc welding electrode holder head 1 has at one end a transverse bore through which an electrode 2 is inserted and is retained by a piston 4 sliding in a tubular piston holder 3 screwed into the holder head 1. The piston 4 is connected to the holder 3 by a transverse pin 5 eccentrically supported in the holder 3, so that on rotation of the pin by a handle 6, the piston is moved to grip or release the electrode. The threads of the piston holder 3 and the head 1 have a high pitch. A nut 7 secures the supply cable in the end of the piston holder 3, which has heat - dissipating apertures 8 and an insulating cover 10. The head 1 has an insulating cover 9. The piston has a large end surface tc grip the electrode.
Patent GB-955061-A (GB)
Title: Improvements relating to the production of photographic films
IPC: G03C1/76
Filed: 1962-06-01
Abstract: 955,061. Photographic films. E. I. DU PONT DE NEMOURS & CO. June 1, 1962 [June 8, 1961], No. 21278/62. Heading G2C. The sliding friction of photographic films is reduced by adding to an outer water-permeable colloid layer a silicone of the formula:- wherein R is an alkyl group of 1 to 3 carbon atoms, R<SP>1</SP> is an alkyl group of 1 to 3 carbon atoms or is methoxy or ethoxy, and n is 0 to 2000. Examples are given of adding an aqueous dispersion of dimethylsiloxane to silver halide emulsions or to a gelatin overcoat which may contain chrome alum and dimethylolurea. Specifications 527,283, 542,704, 600,023, 746,804, 749,225, 757,285, 765,893, 786, 176, 786, 344, 786,345, 788,343 and 788,955 are referred to.
Patent GB-966323-A (GB)
Title: Improvements in electronic regulating devices
IPC: H02J7/16
Filed: 1961-06-23
Abstract: 966,323. Automatic voltage control. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 13, 1961 [June 16, 1960], No. 21286/61. Heading G3R. The output voltage of a generator 1 supplying a load 3 including a battery 4 is regulated by means of a transistor 6 in series with the generator field 2, the transistor 6 being biased either fully "on" or fully "off" under the control of a further amplifying transistor 17 responsive to a voltage comparing circuit comprising a Wheatstone bridge. A resistor 21 and a capacitor 20 connected between the collector of transistor 6 and the base of transistor 17 provide positive feedback. The Wheatstone bridge includes resistors 11 and 13 in two opposite arms and non-linear resistors 12 and 14 in the other two arms. The generator voltage is applied over a variable resistor 10<SP>11</SP> to the diagonal CD of the bridge, and the arrangement is such that the voltage V A   B  across the bridge diagonal AB is positive when the generator voltage is below that value representing a balanced-bridge condition, which value is taken as the reference voltage, and negative when the generator voltage is above the reference voltage. The voltage V AB  is applied to a transistor 15 which is cut-off when V AB  is positive and saturated when V AB  is negative. Transistor 15 controls transistor 17 which in turn controls transistor 6 which operates as a switch controlling the field winding 2. A resistor 16 in series with the load circuit is included in the arm DB of the bridge, and the voltage across this resistor is used to control transistor 17 whereby transistor 6 is cut-off should the load current be excessive. The bridge may include a resistor having a negative temperature co-efficient to compensate for temperature fluctuations. The regulator may be modified to operate in conjunction with an A.C. generator.
Patent GB-224967-A (GB)
Title: Improvements in or connected with apparatus for boring earth and rock for use in mines and the like
IPC: E21B10/40
Filed: 1923-08-24
Abstract: 224,967. Reichwald, A. W., (Schweitzer, E.). Aug. 24, 1923. Bore-hole apparatus.-Bore-holes are enlarged by a tool comprising a cross head 1 connected to the boring bar 5 and carrying two or more laterally arranged boring tools 2, and a heavy bar 4 depending from the cross head into the previously formed bore-hole to act as a guide. The bar 4 may be provided with guiding rollers.
Patent GB-279762-A (GB)
Title: Metal window construction
IPC: E06B3/44
Filed: 1927-08-15
Abstract: 279,762. Dennis, J. E. Aug. 15, 1027. Window frames. - A metal sliding-sash window comprises a frame 1 of sheet metal bent to rectangular shape with a separate front part 6 provided with sash-engaging grooves 7. 8, and sashes of T-shape, one side of the T engaging the grooves 7, 8, and the stem lying against the face 6. The free edges 2, 3, of the frame 1 overlap the grooves 7, 8, and engage the sashes to stop draught. The metal sill has a double offset 16, 17, engaging the stem and side of the T-section sash, and the lintel has one groove for the side of the T-section of the upper sash. The meeting rails of the sashes are formed with any suitable interengaging parts, such as a rib and groove 18, 19. The part 6 may be joined to the frame by spot welding or riveting &c. The central part 6 of the inserted plate is preferably arranged in the plane of the inturned portions of the frame.
Patent GB-835863-A (GB)
Title: Improved expansion sheave
IPC: F16H55/56
Filed: 1958-07-04
Abstract: 835,863. Expanding-pulley gearing. ALLISCHALMERS MANUFACTURING CO. July 4, 1958 [July 5, 1957], No. 21591/58. Class 80 (2). A lubricating arrangement for an expanding- pulley system comprises a lubricator cup 58 feeding to a circumferential groove 59 in the transmission shaft 11 and communicating with a series of grooves 50 in keys 48 let into the shaft, each groove having a series of spaced metering holes 55 supplying the lubricant to a localized rectangular area 61 of the bearing surface of the pulley lugs 25, such area being defined by a continuous groove 60 in which is embedded a sealing element such as an 0-ring 62. The sealing element 62 in addition to preventing leakage of lubricant, also serves as a cushion to reduce vibration. In the arrangement shown comprising two pairs of pulley elements 13, 16 with interdigitated integral lugs 20, 25, the respective sets of elements are coupled together by bolts 30, 31 and connected to members 38, 38a with external screw-threads of opposite hands engaging a rotary sleeve 40 by which the pulley spacing may be adjusted. Leakage of lubricant along the shaft 11 is prevented by a circumferential 0-ring 67 let into a groove in the left-hand disc element 13.
Patent GB-759012-A (GB)
Title: Semiconductor electric signal translating devices and methods of making them
IPC: H01L29/00
Filed: 1951-09-14
Abstract: 759,012. Heat-treating semi-conductor material; coating by vapour deposition. WESTERN ELECTRIC CO., Inc. Sept. 14, 1951 [Sept. 14, 1950; Sept. 14, 1950], No. 21634/51. Classes 72 and 82(2). [Also in Group XXXVI] A signal translating device comprises a metallic electrode which is embedded in, or bonded to a germanium or silicon body, and the region of the body in the vicinity of the electrode has its significant impurity content modified. In one example, an electric current is passed through an unpointed gold wire 25 applied to the surface of an N-type germanium wafer 22 until the germanium fuses. The gold alloys with the germanium and Fig. 2 shows the resulting physical bond; a thin region P is converted to P-type conductivity by diffusion of the gold. The arrangement provides an improvised rectifying contact. The wire may be pressed into the fused body so that it is embedded in the germanium. Two adjoining electrodes of this type may be provided to form a transistor. Various embodiments are described. The electrode may include a significant impurity which is introduced into the semi-conductor body either during the embedding or bonding operation or by subsequent heat treatment. Alternatively, conductivity inversion or modification may be carried out by thermal treatment during, or after, bonding without introduction of impurity. Heating may be effected by passing current through the electrode or by an electric arc, and may be carried out in vacuo-inert gas or air. The electrode can also consist of an iron-nickel alloy, platinum, tantalum, or tungsten. Coating of the electrode with acceptor or donor material may be effected by heating a wire in a vapour, of for example antimony or phosphorus. It improves transistor properties if the emitter used on N-type material and/or the collector used on P-type material comprise a major portion of acceptor material and a minor portion of donor material so that the structure finally has an NPN formation. The conductivity types and acceptors and donors may be interchanged to achieve the same result. Silicon or germanium may be used as semiconductor material. Copper is included as an example of an acceptor impurity. Specifications 632,942, 632,980, 694,021, 700,231, 700,232 [Group XXXVI], and 721,671 are referred to.
Patent GB-517184-A (GB)
Title: Improvements in and relating to axle boxes
IPC: B61F15/22
Filed: 1938-07-21
Abstract: 517,184. Axle - box shields. STROMEIER, G. July 21, 1938, No. 21716. [Class 122 (v)] An axle-box shield comprises a rotating ring d between stationary members e<1>, f<1> having oil stripping edges e, f bearing on the ring d and enclosing passages for oil outflow. Oil collects in a chamber k and is returned to the box through passage l. Member f' carries a packing ring m pressed axially into contact with the wall of the box by spring n carried by a plate p. Ring d may be in two parts,. each split and assembled between the members e<1>, f<1> by helically twisting them through a gap in one of the members.
Patent GB-964471-A (GB)
Title: Improvements in or relating to typewriters
IPC: B41J29/50
Filed: 1962-06-05
Abstract: 964,471. Typewriters. J. R. LANE. (R. Fondiller). June 5, 1962, No. 21717/62. Heading B6F. Margin and carriage stops.-A slidable carriage 21, Fig. 1, of a typewriter, is provided with two margin set devices 41, 42, mounted on a margin rack 36, fixedly supported on end brackets 31, 32 of the carriage, each margin set device comprising a margin setting top member 43, Fig. 5, which is urged vertically into locking engagement with rack teeth 37, by a spring 65 acting on a finger 49 integral with the top member 43 and a margin setting bottom member 44 accommodated between cars 46 of the top member 43 to co-operate therewith and having two pairs of fingers 57, 59 permitting sliding of each margin set device 41, 42 along the margin rack. The margin set devices 41, 42 are provided with coil springs 66, 66<SP>1</SP>, which urge the respective devices towards a central stop plunger 83, Fig. 1, mounted on the typewriter base 24, which stop is engaged by lower ends 85, 86 of arms 62 of the margin set devices to arrest movement of the carriage on reaching of the margin position. The margin set devices may be set manually by depression of the associated actuating fingers 48 against the bias of the spring 65, whereupon the lower edges of the slots 47, Fig. 5, in the ears 46 of the margin setting top member 43 will be clear of the teeth 37 of the rack 36 and the margin set devices may be moved left or right to the position of the margin selected. To set a margin automatically the carriage 21 is moved first so that the location of the margin is opposite the stop plunger 83 and one of the actuating fingers 75, 76, Figs. 1 and 5, depressed to pivot a respective release lever 71, 72 to exert a pressure against the ears 46 of a respective margin setting top member 43 and to move the latter down, whereupon with the lever 71 or 72 still depressed the respective coil springs 66 or 66<SP>1</SP> will be free to move the margin set devices 41 or 42 until the ends 85 or 86 abut against the stop plunger 83. On release of the levers 71 or 72 the respective margin setting top members 43 will move upwardly into the margin stop locking position. Margin stop release-key actions.-To override the margin set devices 41, 42 the stop plunger 83 may be retracted from the path of ends 85 or 86 by the actuation of a margin stop release key (not shown). Paper and matrix carriages and supports.-The carriage 21, may be slidably mounted by ball bearings 22 (Fig. 4, not shown) on a support 23 rigid with the typewriter base 24. Margin stop indicators.-The hand-actuating fingers 48 of the margin set devices extend above the platen 11, Fig. 1, and are clearly visible for accurate determination and location of the margin, even when the devices have been set automatically.
Patent GB-1350933-A (GB)
Title: Brake and clutch components
IPC: F16D69/02
Filed: 1971-04-19
Abstract: 1350933 Friction surfaces for clutches and brakes INSTITUT FUR HARTEREI-TECHNIK and H WASELS 19 April 1971 [13 Feb 1970] 21803/71 Headings F2C and F2E A brake or clutch has at least two friction surfaces at least one of which is provided with a boride coating by treating it with boron. In the embodiment shown a brake drum 10 is treated on its friction surface 12 with a boride coating applied by diffusing boron on to the surface. The carrier metal for the coating may be malleable, grey or spheroidal graphic cast iron or sintered metal or low-alloy or straight-carbon tempered steel. Where the brake or clutch component is made of a material, e.g. aluminium, that is not receptive to a boride coating, a lining of a suitable carrier material is attached to it; as shown a carrier ring 16 is fitted as a lining in an aluminium drum 10.
Patent GB-1483044-A (GB)
Title: Wheel structure including a wheel rim and an emergency running ring for use with a tubeless tyre
IPC: B60C17/04
Filed: 1975-12-10
Abstract: 1483044 Emergency running rings A L MOLE 10 Dec 1975 21811/73 Heading B7C A wheel is fitted with an emergency running ring for supporting a tyre on the wheel should the tyre deflate, the ring comprising an annular member 12 supported in spaced relationship to the wheel rim by a hollow support 13 having two axially spaced sidewalls and being of such dimensions that its radially outer extremity is flush or substantially flush with the radially outer extremity of tyre bead retaining flanges 6 of the wheel rim. In the Fig. 1 embodiment the support is of channel-section and has its web 14 supporting the member 12. The support 13 is again of channel-section in the Fig. 3 construction but the sidewalls of the support directly engage the member 12 to define therewith a chamber for containing a fluid under pressure, which fluid is released through a valve 18 into a tyre mounted on the rim should the tyre deflate.
Patent GB-381273-A (GB)
Title: Improvements in or relating to addressing or like series printing machines
IPC: B41L47/24
Filed: 1931-07-30
Abstract: 381,273. Gearing for stopping machinery; throwing machinery out of action by obstruction of guard device. ADDRESSOGRAPH CO., 901, West Van Buren Street, Chicago, U.S.A. July 30, 1931, No. 21817. Convention date, Jan. 5. [Classes 80 (ii) and 80 (iv).] The main shaft 37 of an addressing or like series-printing machine is driven through a onerevolution clutch comprising a continuously - rotating notched wheel 38, Fig. 5, loose on the shaft, and a pawl 41 pivoted to a disc 43 fixed to the shaft. The pawl is disengaged by a cam 53 on an arm 46, and the disc 43 is brought to rest by a lug 55 lying in the path of a pin 54 on the pawl; rebound is prevented by engagement of the tail 52 of the pawl with a notch 52<1> in the cam 53. The machine is started by depressing a pedal rod 231 connected to a shaft 50 carrying a cam 49 adapted to lower the arm 46 about a pivot 45. The impression mechanism comprises a platen arm 79, which is fixed to a shaft 77, Fig. 6, and is raised during clockwise movement of an arm 80 oscillated about the shaft 77 by a cam 83 on the shaft 37, owing to the engagement of a projection 81 on the arm 80 with a lug 84 on an arm 85 fixed to the shaft 77. During anticlockwise movement, the arm 79 falls under the influence of a spring 86 connected to the arm 85, until the roller P is almost down on the table ; a pawl 88 mounted on the arm 85 is then released from a stop 90 and swings round so that a shoulder 92 on the pawl lies in the path of a lug 93 on the arm 80 whereby a positive final movement of the arm 79 is provided. Injury caused by the presence of an operator's hand or other obstruction is thus prevented.
Patent GB-641536-A (GB)
Title: Improvements in or relating to sewing
IPC: D05B67/00
Filed: 1948-08-19
Abstract: 641,536. Sewing. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Aug. 19, 1948, No. 21867. [Class 112] Special threads, use of.-In order to allow of the use of water-soluble glue instead of wax in a shoe-sewing machine without the disadvantages produced by applying the glue in the same manner as is usual for wax, the thread is provided with a superficial layer of solid glue particles shortly after it has been spun and the glue is softened by moisture immediately before or during the entry of the thread into the work in the sewing machine. The glue is preferably applied by passing the thread through liquid glue and flexing it after the glue has hardened to break up the glue into small scales, but it may be applied in powder form by pressure or low heat. In the sewing machine the thread, which is preferably of nylon, will usually be passed, on its way to the sewing point, through a container holding a solvent comprising cold water, a plasticizing agent such as glycerine, and if desired a small amount of phenol or other preservative; the thread, while in the container, absorbs water, through the fissures in the glue layer, which, as the thread pasess on, softens the glue layer to make it flexible and give it a lubricated surface and also causes the glue particles to swell and close the fissures. Heat produced by friction in the work may liquefy the glue to give further lubricating effect and to enable the glue to penetrate into the thread and stiffen the seam when it rehardens. Surplus glue may be scraped off by the work and harden in the ends of the needle holes to lock the thread to the work. The natural moisture of leather preserves the temper of the glue and gives it slight flexibility, and may in some cases enable the preliminary moistening of the thread to be omitted. Rehardening of the glue and bonding of the thread to the shoe may be accelerated by cooling the work after sewing and by maintaining a dry atmosphere about the work. Formaldehyde may be used in the container to render the glue eventually insoluble in water. Specification 17328/08, [Class 112], is referred to.
Patent GB-706722-A (GB)
Title: Improvements relating to gas filled electric discharge devices
IPC: H01J17/30
Filed: 1951-09-18
Abstract: 706,722. Thermionic-cathode tubes. RADIO CORPORATION OF AMERICA. Sept. 18, 1951 [Sept. 20, 1950], No. 21898/51. Class 39(1) A gas-filled discharge device, Fig. 5, with cathode 42, control electrode 43 and anode 44, has also means for establishing an auxiliary ionizing current, said auxiliary means comprising cathodes 56, 57 and anodes 62, 63. The auxiliary electrodes are energized at greater than ionizing potential, the main electrodes at less, and may operate at as little as one or two volts. Increased efficiency is obtained by surrounding cathodes 56, 57 with focusing electrodes 58, 59 at the same potential, and having slots 60, 61 therein. The auxiliary electrodes may be duplicated on each side of the grid 43, as shown in Fig. 5, so that the plasma may be maintained by separate auxiliary discharges on both sides of the grid, independently of diffusion therethrough, thus improving the frequency response. In a simpler arrangement, Fig. 4 (not shown), only one set of auxiliary electrodes is provided, the focusing electrode now having two slots, opening respectively into the grid-cathode and grid-anode regions. In Fig. 5 the auxiliary cathodes may be connected together, and also the auxiliary anodes, the latter being at the potential of the main cathode 42. In a still further simplified form, Fig. 3 (not shown), the same electrode acts as both main and auxiliary anode. In the arrangement of Fig. 1, auxiliary cathode 25, with slotted focusing electrode 23, is as before. The anode is a U-shaped member 17, and the control grid a number of parallel wires 20 across two U-shaped supports; the spacing between adjacent grid wires is large compared to the mean free path of the electrons and ions in the gas, which is helium at about 750 microns pressure. The auxiliary ionizing potential is applied between cathode 25 and main cathode 13. In the mixer tube shown in Fig. 8, the anode 95 is rectangular, and the two control grids are coplanar and interleaved: wires 96 forming one grid are supported from an upper U-shaped collar, and alternate wires 98 forming the other grid from a similar lower collar. Fig. 10 (not shown) is a set of characteristic curves given by the form of device of Fig. 1, showing how the grid retains continuous control of the discharge from zero to upwards of 200 milliamps.
Patent GB-646156-A (GB)
Title: Improvements in continuous-form stationery
IPC: B41L1/32
Filed: 1947-08-08
Abstract: 646,156. Stationery ; fastening sheets together. FANFOLD, Ltd. Aug. 8, 1947, No. 21945. Convention date, May 17, 1943. [Classes 16 and 146 (ii)] In a stationery web comprising continuous strips 4 of record forms with feed perforations 13 in marginal portions 7, the strips 4 are fastened together by tongues 10 which are cut from the superposed marginal portions, folded rearwardly and projected through superposed slots 11 in all the strips. The perforations 9 formed by the folding of the tongues 10 may be located so as to serve as feed perforations, and the free ends 12 of the tongues are folded towards the bottom of the form. The marginal portions 7 secured together are detachable at a line of perforations 14 to separate the forms.
Patent GB-219631-A (GB)
Abstract: 219,631. Siemens Bros. & Co., Ltd., Berry, J., and Peters, C. L. March 24, 1923. Drawings to Specification. Automatic and semi-automatic exchange systems; metering.-In an exchange network in which the first letters of the name of the wanted exchange are dialled to a register-controller which translates them into a routing number, if a call is made to a manual operator's position, the register-controller sends back a current impulse which causes the control of the release of the connection to be transferred from the calling subscriber to the manual operator. This current impulse advances a sequence switch associated with the first selector to a position in which a holding circuit independent of the calling subscriber is prepared, this prepared circuit being completed by the answering relay when the manual operator replies. The invention is shown as applied to a system which is identical with that described in Specification 217,981. Specification 203,759 also is referred to.