baber/WOPTO huggingface dataset:
Patent GB-1026479-A (GB)
Title: Eliminator type air filter
Inventor: DUNCAN SYDNEY FORD
IPC: B01D46/12
Filed: 1963-08-20
Abstract: An apparatus for filtering foreign material from air using activated carbon or charcoal as the filtering medium (Fig. 2, not shown) comprises a housing 11 containing a plurality of flat filters 12 removably positioned in zig-zag stacked relationship with members 33, 36 sealing each filter to each adjacent filter. Each filter 12 (Fig. 1, not shown) comprises edge members 19 and end members 20 assembled to form a square or rectangular frame, the front and rear of which are covered by perforated screens 23, 25 and the interior of which is subdivided by longitudinal dividers 21 and lateral dividers 22 into a plurality of spaces 24. These spaces 24 are filled with activated carbon or charcoal. Inexpensive materials such as wood for the members 19, 20, cardboard for the dividers 21, 22, and paper for the screens 23, 25 may be used and enable the filters 12 to be disposed of after removal of the deactivated carbon or charcoal.  Each edge member 19 has a longitudinal groove 32 into which a rib 28 or 29 fits when the filter 12 is mounted in the housing 11.  The ribs 28, 29 project outwards from, and converge towards one end 30 of brackets 26 mounted on the inside of side walls 16 of the housing 11.  The ribs 28, 29 are so disposed that each filter 12 contacts the filter 12 immediately above it at one end and the filter 12 immediately below it at the other end.  In addition to the side walls 16, the housing 11 has top and bottom walls 17 and 18, respectively, all of which extend from a front inlet frame 13 to a rear outlet frame 14.  In order to seal the contacting end members 20 of adjacent filters 12 at the end of the housing 11 near frame 14, arcuate members 33 are provided in the housing 11 extending between the side walls 16.  Each member 33 has a pair of sealing strips 34 which engage the contacting end members 20.  For the top and bottom filters 12, sealing strips 35 are provided on brackets secured to the top and bottom walls 17, 18 of the housing 11.  The contacting end members 20 of adjacent filters 12 at the end of the housing 11 near frame 13 are sealed by arcuate members 36 similar to arcuate members 33 but which are pivotable about members projecting into apertures 45 in the adjacent side walls 16 so as to permit individual removal of the filters 12 for replacement or repair.  Latch assemblies 38 serve to lock the members 36 in their sealing positions.  The air passes from left to right through frame 13 into the narrowing passages between adjacent filters 12, upwardly or downwardly through the filters into the widening passages between adjacent filters and out through frame 14.  The frame 13 may be provided with retainer type spring clips 48 for holding a pre-filter of any common type having a porous filter medium for removing particles from the air in order to avoid premature clogging or deactivation of the carbon or charcoal.
Patent GB-268427-A (GB)
Title: Improvements in and relating to gear-cutting
IPC: B23F21/16
Filed: 1925-12-30
Abstract: 268,427. Parsons, Sir C. A., Cook, S. S., and Douglas, L. M. Dec. 30, 1925. Gear-cutting; milling-cutters. - A cylindrical hob 1 for cutting involute gear wheels is provided with teeth 2 having cutting-edges which are perpendicular or substantially perpendicular to the axis of rotation 4 of the hob. The other tooth edges 5 are inclined and cutting is effected at points on a line AA tangential to the base circle BB. The cutting is confined to a small area 3 near the tip of the teeth, the remainder of the active tooth-face being cut away. Longitudinal relief is provided as indicated at a, Fig. 3. The hob may be readjusted to cut the opposite faces of the blank teeth or, alternatively, both flanks may be cut simultaneously by arranging two hobs on the same mandrel as shown in Fig. 5. In a modification, the cutting teeth may be at an angle to the hob axis which is two or three degrees less than 90‹. Preferably, the teeth are first roughed out with an ordinary hob and then finished with the hob described above. The invention is applicable also to a. grinding-hob. Specification 29380/12 is referred to.
Patent GB-506531-A (GB)
Title: Improvements in or relating to shoe-upper lasting machines
IPC: A43D75/00
Filed: 1937-11-30
Abstract: 506,531. Lasting-machines. BRITISH UNITED SHOE MACHINERY Co., Ltd. Nov. 30, 1937, No. 33002. Convention date, Dec. 8, 1936. Addition to 457,046. [Class 17 (i)] The step-by-step lasting-machine described in the parent Specification, wherein the lasted upper margin is secured by driven fastenings or by cement, is modified. When cement is used the wiper is struck by a hammer, the edge gauge is slightly retracted, the tack driver is held out of action, and the tack raceways are moved to inoperative position. A handle 146 pivoted at 140 is moved forwardly for cement lasting and rearwardly when tacks are to be driven. An arm on the pivot rod 140 is linked to a sleeve 154 pivoted at 76 and linked to an arm on a shaft 162 also linked to an arm pivoted at 100 and moving with a lever 98. In the forward position shown, an arm on the shaft 162 provided with a cam slot 206 engages a rod on a lever pivoted at 214 and engaging a slot 220 in the raceway unit. In this position neither raceway aligns with the tack separator. The usual link 66, for swinging the raceway unit to change the kind of tack delivered, is connected to its operating means by a spring plunger engaging a recess, so that the raceway returns to its original position when the handle is moved rearwardly. The lever 98 forms an abutment for a stop 250 on a slide carrying the end gauge 20. A second stop 260 engages a fixed bracket 102 when the lever 98 has been swung rearwardly. Both stops are adjustable. The slight retraction of the gauges ensures the wiper traversing the whole of the upper margin when cement is being used. The wiper 26 is connected to its actuating slide 28 by a horizontal pivot. A spring plunger behind the pivot maintains the forward part of the wiper against a stop 92. A tail 94 co-operates with an L-shaped plate 96 on the lever 98 to prevent the wiper tilting too.soon. The wiper slide carries a hammer 106 urged clockwise, by a spring, about its pivot 120, but normally held out of contact with an arm 110 secured to the wiper by a latch 132 engaging a stop 134. An arm 136 of the latch co-operateswith an abutment 178 on an arm of a rock-shaft 175 actuated by a cam 186 secured to the handle 146. After the hammer stroke, a roll 194 engages a cam 196 as the wiper is retracted, to re-position the latch. The driver bar is formed with an abutment co-operating with a latch moving with a pivoted arm 234 normally engaging a stop 230 carried by a slide 232 reciprocated by an arm on the sleeve 154. When the stop moves to the left the driver is prevented from descending, a cam surface 246 re-positioning the arm and stop when tack driving is to be resumed. Specifications 14453/97, [Class 17], and 224,608, [Class 17 (i)], are referred to.
Patent GB-1042270-A (GB)
Title: Variable capacitance diodes
IPC: H01L29/93
Filed: 1964-08-13
Abstract: 1,042,270. Semi-conductor devices. INTERMETALL GES FUR METALLURGIE UND ELECTRONIK. Aug. 13, 1964 [Aug. 13, 1963], No. 33095/64. Heading H1K. A variable capacitance PN-junction diode consists of a P+ region surrounded by P material and an N + zone forming a junction of which the central area 3 contacts the P + region and the outer area 4 contacts the P material. The invention also covers the opposite arrangement, with N for P and vice versa. The P+N+ junction 3 provides for a relatively large change in capacitance for a given voltage change and the surrounding junction 4 has a relatively high breakdown voltage. The device shown is a P silicon body-or a P layer on a P+ body, not shown-in which a P+ region has been formed by diffusion or alloying through an oxide mask. If diffusion is used, this may be by the technique of embedding the masked body in a powder of highly doped semi-conductor. The preferred dopant is boron. The N+ zone is formed by diffusion, alloying or epitaxial growth through a new oxide mask 2. In this case the preferred dopant is phosphorous. The second mask, 2, is left in position to protect the junction.
Patent GB-521315-A (GB)
Title: Improvements relating to electric arc welding
IPC: H02P7/00
Filed: 1938-11-15
Abstract: 521,315. Automatic control systems. JONES, L., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Nov. 15, 1938, No. 33233. [Class 38 (iv)] Arcs.-A relay coil 11 is connected in shunt to the electrodes of an arc by conductors 6, 7 and is adapted to control the speed of an electrode feeding motor 1 by short-circuiting a resistance 9 in its field circuit when the arc gap is short and short-circuiting a resistance 8 in the armature circuit when the arc is long. A relay 5 in shunt to the arc electrodes holds its contacts 5a, 5b closed to cause feeding until the voltage across the electrodes becomes very low or zero, as at starting, when the contacts 5c, 5d, 5e close to cause retraction with the resistance 8 short-circuited the field resistance 9 being in circuit. The relays may be fed through a rectifier network if required.
Patent GB-1038147-A (GB)
Title: Improvements in and relating to the production of alpha-naphthol
IPC: C07C37/06
Filed: 1963-08-22
Abstract: Alpha-naphthol is obtained by dehydrogenating alpha-tetralol and/or -tetralene in presence of a catalyst comprising finely-divided Ni, Cu, Cr, Fe, Co, Pt, Ir, Pd or Rh deposited on an oxide which contains no acid foci, e.g. kieselguhr, CaO, MgO, CuO, SrO, BaO or ZnO.
Patent GB-618308-A (GB)
Title: Improvements in and relating to laminated magnetic field extension blocks used in conjunction with magnetic work holding devices
IPC: B23Q3/154
Filed: 1946-11-29
Abstract: 618,308. Magnetic work-holders. CLARKE, C. G. Nov. 29, 1946, No. 33333. [Class 60] A magnetic work-holder has a field extension block made in two parts A, B, each part being composed of alternate layers of magnetic, C, and non-magnetic, D, E, material and having tongues formed on one end, the tongues on one part being made to interlock with those on the other and a non-magnetic swivel pin F being passed through them and retained by means of a nut G, the whole assembly forming a hinged block of which one face is adapted to be placed on the magnetic work-holder proper and the other end to be rotated and set to a predetermined angle and then locked in position by means of the nut G, thus providing a workholding face at an angle to the face of the magnetic work-holder.
Patent GB-1192766-A (GB)
Title: Improvements in or relating to Vehicle Wheel Suspension Assemblies
IPC: B60G15/07
Filed: 1967-07-20
Abstract: 1,192,766. Vehicle suspensions. BAYERISCHE MOTOREN WERKE A.G. 20 July, 1967 [22 July, 1966], No. 33432/67. Heading B7D. A motor vehicle suspension comprises a transverse guide arm 6, a telescopic vibration damper 2 which is fast with a wheel mounting member 5, and a coil spring 3 which, in the unstressed state before positioning has the shape 31 whereby, when positioned, it exerts a bending moment upon the vibration damper in opposition to that produced by the load. The axis of the coil spring may be offset to augment the effect.
Patent GB-881055-A (GB)
Title: Hydraulic controller
IPC: F15B13/043
Filed: 1957-10-25
Abstract: 881,055. Fluid-pressure servomotor control systems. SHIH-YING LEE. Oct. 25, 1957 [Nov. 16, 1956], No. 33452/57. Class 135. In an hydraulic controller a pilot valve 14 under the control of a transducer 12 controls the position of an amplifying valve 16 which in turn controls the supply of liquid to an hydraulic motor, and a device 18, responsive to fluid flow from the amplifying valve to the hydraulic motor, feeds back a signal e.g. via parts 114, 116 to the pilot valve. As shown, the transducer 12 comprises an electromagnetic torque motor the armature 28 of which actuates the spindle of the pilot valve. The spindle is mounted on two leaf springs 42 attached to the pilot valve body and carries a central valve disc 40, the assembly being such that movement of the disc and the springs varies the orifices formed at the ends of the opposed tubes 36. The pilot valve is supplied with pressure fluid via pipes 62, 82 and controls its distribution to either of pipes 86, 88 leading to cylinders 56, 58 controlling the position of the amplifying valve spool 54, or to an exhaust reservoir. The amplifying valve also receives its inlet pressure supply via pipe 62 and it controls its distribution to one or other of the pipes 96, 98 leading to an hydraulic motor. The flow rate sensors 18 situated in these pipes comprise spring-loaded valve members 110 having lightly loaded check valve members 120 which when the main valve is shut allow exhaust liquid to pass freely to the amplifying valve whence it exhausts through pipe 100. The feedback via flow sensor stem 114 and spring 116 attached to the transducer armature acts in opposition to the input signal, such that when the required speed of the power device is attained, as selected by the input signal, the pilot valve is returned to its mid (inoperative) position and the amplifying valve maintains its displaced position to keep the speed of the power device constant so long as an input signal exists. Modifications of the pilot valve are described wherein a pair of opposed control orifices are supplied with pressure fluid via restrictions and the valve member is connected directly to the actuator of the transducer, which may be a pressure-responsive diaphragm or is a baffle connected at one end to the actuator and at the other to a floating feedback arm. The amplifying valve spool may be spring centred so that it assumes a definite position proportional to the input signal.
Patent GB-650929-A (GB)
Title: Improvements in or relating to ventilators
IPC: F24F13/10
Filed: 1948-12-30
Abstract: 650,929. Ventilators. EVERED & CO., Ltd., WILSON, A. H., and WHITTAKER, J. J. Dec. 30, 1948, No. 33473. [Class 137] A "hit-and-miss" ventilator has a fixed plate 7 and a rotatable component 8 with teeth 8b around its periphery which are engaged by the pawl 9 when the spring-controlled arm 10 is turned by the cable 14, allowing step-by-step adjustment of the ventilator.
Patent GB-780295-A (GB)
Title: Improvements in or relating to framing and lighting pictures and the like
IPC: A47G1/06
Filed: 1955-11-22
Abstract: 780,295. Picture frames; illuminating pictures. PUCKLE, G. D. B. Nov. 22. 1955 [Nov. 24, 1954], No. 33473/55. Class 11 A unit for framing and electrically lighting a picture or like display 3, Fig. 2, comprises a frame @1 adapted to surround, and to carry with respect to, the picture 3, at least one light 5 carried by the frame for illuminating the picture and a mask 7 carried by the frame to conceal the light from a person viewing the picture. The mask may be pivoted at 8 and be provided with a reflector on its rear face. A closable aperture 6 is provided so that the light may also illuminate the zone below the device. A decorative surround may be provided either around the inner edge of the framework 1 or around its outer edge in which latter case the lamps may be mounted outside the framework 1, the decorative surround serving as the mask. Lamps may be provided at the top and bottom and at the sides of the picture as desired. Fig. 7 shows an alternative arrangement allowing the picture 3 to be seen flat against a wall 12, the lamp 5 being mounted at the top of the picture in a reflector 13. A diffusing filter 14 may be provided.
Patent GB-207389-A (GB)
Title: Improvements in and relating to resilient road surfaces, floorings and the like
IPC: E01C5/18
Filed: 1922-12-07
Abstract: 207,389. Carpmael, W., (Barns, W. F.). Dec. 7, 1922. Reinforced blockwork floors.-A road surface or flooring comprises resilient blocks 1 having cavities 2 which form continuous channels to receive holding rods or bars 3 longer than the blocks but smaller in width than the cavities. The blocks are threaded on the bars by pressing the bars together, the bars afterwards returning against the outer sides of the cavities and being retained by steel templates 4.
Patent GB-509572-A (GB)
Title: An improved process for producing cellulose wool with wool-like crimping from viscose
IPC: D01F2/06
Filed: 1938-11-18
Abstract: 509,572. Cellulose wool: VEREINIGTE GLANZSTOFF - FABRIKEN AKT. - GES. Nov. 18, 1938, No. 33539. Convention date, Nov. 23, 1937. [Class 2 (ii)] Highly crimped and unfelted cellulose wool is obtained by spinning an alkali-poor viscose, after-ripened to beyond 5‹ Hottenroth, and having an alkali-cellulose ratio of at most 6 : 8, into a weakly acid, neutral, or weakly alkaline bath rich in salt, containing for example, sodium sulphate, magnesium sulphate, or zinc sulphate, with a small amount of acid or alkali. The fibres are stapled, opened if desired in a salt containing bath, acidified with dilute acid solutions (less than 50 grms. sulphuric acid per litre), washed, after-treated, and dried. The filaments are preferably stretched, prior to stapling. Examples are given.
Patent GB-1505055-A (GB)
Title: Threading devices for two-for-one twisting machines
IPC: D01H15/007
Filed: 1976-08-12
Abstract: 1505055 Hand tool for threading spindles HAMEL GmbH ZWIRNMASCHINEN 12 Aug 1976 [18 Sept 1975] 33548/76 Heading D1F A compressed air-operated threading device in combination with a 2:1 twisting spindle comprises a compressed air gun with means 24 for connecting the gun to the upper end of the yarn guide tube 26 of the spindle. There are means for introducing yarn into a bore in the connecting means 24 and a trigger on the gun for causing a jet of compressed air to pass into the yarn guide tube and through the spindle assembly. As described, a compressed air gun has a spiral thread guide 56 arranged at the mouth of the air jet. The spiral 56 is placed over the end of the yarn guide tube 26 and the end of the yarn is placed across the spiral gap 58. When the gun is operated the yarn end is caught in the air jet and blown into the thread guide tube 26 and runs around the spiral gap. At the end of the spiral gap the yarn is caught between the spiral guide 56 and the end of the yarn guide tube 26. The length of yarn fed into the yarn guide tube 26 is determined by the shape of the thread guide. In an alternative embodiment Fig. 3 (not shown), a predetermined yarn length required for threading is withdrawn from the bobbin and clamped at the end of the compressed air gun. The compressed air gun is then placed on yarn guide 26 and used to blow the end of the yarn into the tube 26. When the yarn is within the tube 26 the operating lever is pivoted further so as to release the clamp and feed the remainder of the yarn into the tube 36. The compressed air device may be used to press the yarn guide tube 26 downwardly into a position in which internal yarn brakes within the tube 26 are displaced from the axial bore of the tube.
Patent GB-484129-A (GB)
Title: Improvements in and relating to hydraulic brakes
IPC: B60T11/22
Filed: 1936-12-07
Abstract: 484,129. Hydraulic brakes. WEIHE, H. K. Dec. 7, 1936, No. 33579. Convention date, Dec. 5, 1935. [Class 103 (i)] A hydraulic brake system for vehicles forms a closed circuit and a pump additional to the master cylinder is provided and is adapted to be operated by the brake pedal, clutch lever or other means so as to circulate the liquid intermittently and thus remove air and maintain the system filled with liquid. In Fig. 1, the pipe system 14 in which brake cylinders 15 .. 18 are interposed is connected at its ends respectively to the master cylinder 1 and to a circulating pump 6. The pump has a delivery valve 12 and an inlet valve 11 in a passage 51 leading to a reservoir 5. The pump piston 7 has a flexible connection 8 to the clutch and brake pedals 9, 4, and when either of these is depressed, the piston 7 draws from the reservoir 5 liquid which on the return movement of the pedal is forced by a spring 22 through valve 12, pipe 14 and the cylinders 15 .. 18 to the master cylinder 1 where it presses back the piston 2 and pedal 4 against the action of a spring 23 so as to uncover a port 20 through which it returns to the reservoir 5. In a modification, the reservoir and pump form a unit separate from the master cylinder and are arranged above that cylinder, for instance, on the dashboard; the reservoir forms an annular chamber around the vertical pump cylinder and the port corresponding to the port 20 is normally uncovered by the master piston and has a pipe connection, with a non-return valve, to the reservoir. In order that the brake cylinder volume may be as small as possible, a filling member 30 may be provided and is mounted on pins 26 extending from the pistons, these pins also carrying the cup-washers 28.
Patent GB-770228-A (GB)
Title: Method of forming bearings from metal strips
Inventor: TAYLOR FRANK EDWARD
IPC: B21D53/00
Filed: 1955-11-18
Abstract: 770,228. Making bearings. GLACIER METAL CO., Ltd. Nov. 18, 1955 [Nov. 19, 1954], No. 33630/54. Class 83 (2). In the manufacture of bearings from metal strip by cutting the strip into blanks and bending and coin-pressing each blank to semicylindrical form, an oil hole 4, Fig. 4, is punched in the strip or in the blank 3, cut therefrom, before bending, leaving the punched-out slug 5 partly ejected, the slug being pressed back into the hole before or during the bending and coin-pressing to limit or prevent distortion of the hole and being subsequently ejected. The strip preferably consists of a steel backing 1 and a layer of bearing metal 2. One or more oil holes 4 may be punched simultaneously with the cutting of the strip into blanks, each of which is then bent in a die to semi-cylindrical form, Fig. 5 (not shown), during which the slug 5 is pressed back into the hole. The bent blank is then coin-pressed, Fig. 6 (not shown). The operations of cutting, bending and coinpressing may be performed successively as a continuous operation on a progressive press tool. An inner circumferential oil groove 7, Fig. 8 (not shown), is then machined, partially removing the slug 5. The blank is then pressed in a die, Fig. 9, to form a locating tab 8 and simultaneously a punch 9 ejects the remainder of the slug 5. The bearing is then finished by applying relief near the joint faces, broaching the joint faces, de-burning and machining the bore. A layer of soft metal may then be applied to the bore by plating.
Patent GB-502338-A (GB)
Title: Improvements in or relating to brushes, more particularly stippling brushes
IPC: A46B3/04
Filed: 1938-11-18
Abstract: 502,338. Brushe s & c. TIMMIS, A. H., and HAMILTON & CO. (LONDON), Ltd. Nov. 18, 1938, No. 33640. [Class 19] A method of manufacturing brushes particularly stippling brushes consists in inserting the root end of bristles 1, Fig. 3, into holes in a perforated plate 4, the edges of the holes upstanding to form flanges 7 round the bristle tufts. A layer 9 of heat-hardenable plastic is then added to impregnate the ends of the bristles and fill the spaces between the flanges. A second plate 5, Fig. 4, is then superimposed on the first, flanges 8 being secured over the edges of the plate 4 as in Fig. 5. The second plate has also a layer 10, Fig. 4, of similar plastic and after the application of heat, the two plastic layers become one and are heat hardened. The brush may be completed by a handle 3 as in Fig. 5. The plastic layers may be a vulcanizable rubber mixing or one may be unvulcanized rubber. The plates may be metal or synthetic resin.