baber/WOPTO huggingface dataset:
Patent GB-921920-A (GB)
Title: Improvements in or relating to the stabilization of polychloroprene latices
Inventor: GELBERT CHESTER HERBERT
IPC: C08C1/06
Filed: 1961-03-29
Abstract: A polychloroprene latex may be stabilized by mixing therewith methanol, a water-soluble casein salt and a non-ionic surface-active agent, either separately or as a pre-formed mixture. The polychloroprene latex may be prepared from chloroprene alone or with up to a total of 60% by weight, based on total monomer content, of one or more copolymerizable monomers such as styrene, a vinyl toluene or vinyl naphthalene, 1,3-butadiene, isoprene, 2,3-dichloro1,3-butadiene, a vinyl ether, ester or ketone or an ester, amide or nitrile of acrylic or methacrylic acid.  The casein salt may be prepared by adding to casein an alkaline agent such as ammonia, trisodium phosphate, borax, dimethylamine, diethylamine, diethanolamine, sodium hydroxide and potassium hydroxide, and the surface-active agent may be an ethylene oxide condensation product of lauryl, cetyl or p  oleyl alcohol, dodecyl or tert.-dodecyl mercaptan or isooctyl or nonyl phenol.
Patent GB-281989-A (GB)
Title: Improvements in and relating to photographic cameras
IPC: G03B17/44
Filed: 1927-04-30
Abstract: 281,989. Motti, C. Dec. 10, 1926, [Convention date]. Focusing-devices; dark slides. -In a camera, or in a separate attachment therefor, automatic means are provided whereby the focusing screen is replaced by the sensitive plate or film and the exposure then effected. In the camera attachment described, the casing 1, Fig. 1, has a frame 4 for attachment to the camera. The sensitized plate is mounted in a sheath 15, Fig. 7, which slides within a dark slide 6 having ribs 7 which slide in slotted ways 8 on the case 1. Projecting ribs 14 on the sheath 15 engage track ways 18, Fig. 7, in a vertically movable carriage 17 within the casing. The focusing screen 24 is attached to the carriage 17 and winds on a spring roller 26. A rear opaque blind 20 on a spring roller 21 is also attached to the carriage 17. The shutter blind 30, Fig. 10. comprises opaque portions 47, 52 and openings 46, 51, and winds between a spring roller 44 and a setting roller 57. Intermediate strips 49, 54 on the blind have perforations 50, 53 for engagement at appropriate times with spring projecting bolts 31, 32, Figs. 3 and 11, on the carriage 17. When set for focusing, the blind is fully wound on the roller 57 and held by a pawl 60, Fig. 1, the carriage 17 being also held by a catch 64, Fig. 11. The rear blind 20 is up, the focusing screen 24 in situ through the opening 46 in the shutter. On releasing the lever 61, Fig. 1, the pawl 60 and catch 64 are released; the carriage 17 is coupled with the shutter by the bolts 30, and moves with it, drawing the plate sheath 15 with it under cover of the opaque portion 47 of the shutter, the rear opaque blind being unrolled and the focusing screen 24 rolled up. When the carriage 17 reaches its lowest position, the sheath 15 still projects somewhat within the slide 6 to prevent premature removal thereof. At this stage the bolts 31 are retracted by a fixed pin 62 on the casing, and the opening 51 in the shutter passes across the plate, the opaque portion then recovering it. During this movement the shutter passes idly over the bolts 32, but at the end of the movement the bolts engage the openings 53 in the strip 54. On rewinding the shutter by the knob 58, Fig. 1, the carriage 17 is raised by the bolts 32 until the catch 64 engages the carriage, at which time the, bolts 32 are retracted by a pivoted lever 38, Fig. 3, which engages a fixed projection on the casing 1. The plate sheath is thereby returned into the slide 6, the blind 20 rolled up, the focusing screen extended; the shutter is then further wound until the bolts 31 re-engage the openings 50 in the strip 49, being held by the retaining pawl 60.
Patent GB-568998-A (GB)
Title: A combined container and air operated feeding attachment for pneumatic hammers, riveting machines, riveting tools, or the like
IPC: B21J15/32
Filed: 1944-06-17
Abstract: 568,998. Rivet &c. feeding devices for riveting and screw inserting. HEATH, C. W. June 17, 1944, No. 11567. [Classes 83 (iii) and 83 (iv)] [Also in Group VII] A device for supplying rivets, screws, nails, &c. from a container is formed as an attachment to an inserting tool and is operated by compressed air. As applied to a pneumatic riveter, the snap 2 is loosely retained in the tool by a split holder 15 held together by two screws 29 and serving to support the device by a tube 6 in conjunction with springs 27, 28. The snap or other tool is thus free to vibrate longitudinally or rotate according to whether the device is fitted to a hammer or a rotary tool. The container 14 for the loose assemblage of rivets can be swung aside about the bush 8 and then moved laterally for removal for refilling. Spring sleeves 10 lock the container in place. The normal operating trigger t for the hammer is preferably fixed down the air supply to the hammer being controlled by a valve c in the device. A valve a supplies air to the container at d and a valve b through the tube 6 and passage e to direct a jet at the opening in jaws 3 arranged to hold a single rivet. The valves are sequentially operated on axial movement of the container by cam pins 16a, 16b, 16c attached to the holder 15. The jaws 3 are normally spring-closed at 5, but movement of the device rearwardly of the tool causes the snap to open them as shown in Fig. 9, in which position they are held clear of the tool, whether reciprocating or rotary. With the device in the position shown in Fig. 1, the valve a is open and air blows the rivets along the passage 1 towards the jaws 3. As the device is moved back towards the hammer, the valve b opens and causes a jet of air to agitate the rivets near the holder 3 until one enters the opening in it and is held by its head. Further movement of the device closes the valve a and the jet from b deflected owing to the closure of the hole in the holder 3 by the rivet drives the other rivets back into the container. Further movement closes the valve b and the device is in the neutral position in which the protruding shank of the rivet can be inserted into the work. Further rearward movement of the device then causes the parts of the holder 3 to separate and opens the valve c to set the rivets.
Patent GB-404365-A (GB)
Title: An improved change speed gear
IPC: F16D21/04
Filed: 1933-05-22
Abstract: 404,365. Change-speed gearing; claw clutches. CAMPBELL, P. C., 6, Park Hill Court, Beeches Road, Upper Tooting, London. May 22, 1933, No. 11608 /32. [Class 80 (ii).] Change-speed toothed gearing for vehicles comprises a series of loose gears d<1>, e<1>, f<1>, Fig. 1, supported externally by roller and ball bearings j, h and adapted to be clutched alternatively to a hollow through shaft l by a sliding clutch-head n with triangular dog ends o. The dogs o engage with their flat ends, as shown in Fig. 3, the flat ends of dogs o<1> within the bosses of the loose gears. The rear parts of the dogs o, o<1> are tapered to facilitate the sliding of the clutch head within the hollow wheel bosses in changing speed. The shaft l, which is shown in section in Fig. 2, is secured to a wheel m, constantly driven from a gear a<1> fast on a driving-shaft a. Gears d, e, f fast on a driven shaft b mesh with the gears d<1>, e<1>, f<1>, respectively, and are driven at different speeds according to the position of the clutch-head n, which slides under control from a manuallyoperated rod k. An additional train c<1>, c with an idler, not shown, is brought in for reversed driving by a separate clutch q. A brake drum v is fast on an extension of the shaft l to facilitate gear changing. As the clutch head n slides, so does an electric contact x on the rod k within a switch box w, by which a visible indication is given of the speed gear in action at any time.
Patent GB-527661-A (GB)
Title: Improvements in or relating to heating ovens, particularly those for hardening glassplates
IPC: C03B29/10
Filed: 1939-04-18
Abstract: 527,661. Ovens for heating glass plates. GLACERIES REUNIES SOC. ANON. April 18, 1939, No. 11697. Convention date, April 27, 1938. Drawings to Specification. [Class 5f (ii)] An oven for heating glass plates or the like to be hardened while supported in a vertical plane parallel to the side walls of the oven is built up of a number of independently heated sections which can be placed end to end to form a structure of any desired length. Each section may have end frames adapted to be connected by bolts or to support the end doors, and the sections may be made in two parts meeting in the longitudinal vertical median plane of the oven, which construction allows the width of the oven to be varied and may also be used to form a slot in the top for the travel of overhead suspension means for the plates. The width of the slot may be controlled by tiles.
Patent GB-1492846-A (GB)
Title: Clutch and brake assemblies
IPC: F16D67/04
Filed: 1975-03-20
Abstract: 1492846 Clutch-brake combinations; friction clutches J I CASE CO 20 March 1975 [19 April 1974] 11709/75 Headings F2C and F2L  A clutch-brake combination comprises an hydraulically actuated multi-plate friction clutch 18, 19 between a driving shaft 11 and a driven member 12 which, when the clutch is disengaged, is braked by an hydraulically actuated cone brake 33, 34. A brake ring 29 carrying a conical friction lining 36 engageable with a conical surface 34 of the driven element 12 is moved axially into engagement with the member 12 against the bias of return springs 43 by supplying pressure liquid to an annular chamber 32 into which the ring 29 projects. Bolts 41 which support the return springs 43 pass through a flange 47 of the ring 29 and prevent rotation of the latter relative to a housing 10. The clutch is engaged against the bias of a return spring 28 by supplying pressure fluid to a clutch engaging piston 21.
Patent GB-882718-A (GB)
Title: Improvements in and relating to glass
Inventor: MCMILLAN PETER WILLIAM
IPC: C03C3/145
Filed: 1957-04-10
Abstract: 882,718. Insulation. ENGLISH ELECTRIC CO. Ltd. April 3, 1958 [April 10, 1957], No. 11726/57. Class 36. [Also in Group XXIII] A glass-bonded mica electrical insulating material comprises a stratified assembly of mica splittings coated with finely divided powdered glass of composition consisting of the whole being heated under pressure to fuse the powdered glass and bond the mica splittings. Specification 882,717 is referred to.
Patent GB-126651-A (GB)
Title: Improved Screen for Kinematographic Projection.
Inventor: VILLERS ALFRED
IPC: G03B21/60
Filed: 1919-05-10
Abstract: 126,651. Villers, A. May 10, 1919. Optical-projection apparats - A screen for optical projection is made of cotton fabric coated first with a mixture of Malines glue and white lead, and polished to obtain a uniform surface. A further coating of white lead is applied, followed by a coating made of white lead, Venetian turpentine, and Dutch oil, this coating being polished or smoothed to remove all traces of the brush. Finally, a metallic coating such as powdered silver is applied with a polishing pad or ball.
Patent GB-561509-A (GB)
Title: Improvements in throttle actuating mechanism for internal combustion engines
IPC: F02D11/08
Filed: 1942-08-21
Abstract: 561,509. Throttle valves. BENDIXWESTINGHOUSE AUTOMOTIVE AIR BRAKE CO. Aug. 21, 1942, No. 11814. Convention date, Oct. 27, 1941. [Class 7 (vi)] In mechanism for actuating an engine throttle and comprising a compressed air motor 4 having a pressure responsive member such as a piston 19, rod 17 and link 13 movable to open and close a throttle 3, a spring &c. 29 urges a piston 28 formed with an extension 30 to displace the piston 19 towards the opening position when the pressure on the piston 28 from a source 6 is insufficient to counteract the movement. The piston 28 moves in a cylinder 27 aligned with the casing of the motor 4 and terminating in a cup-shaped member 32 which acts as a stop for the extension 30 when the throttle 3 has been opened a predetermined amount. Specification 488,208, [Group XXIX], is referred to.
Patent GB-889182-A (GB)
Title: Electric insulating material
IPC: H01B3/44
Filed: 1960-04-04
Abstract: An electrical component comprises insulation formed from a vulcanized mix comprising an elastomeric, amorphous copolymer of ethylene with an a -olefin such as propylene or butene, the copolymer having been prepared in the presence of a catalyst formed from a compound of a transition metal of Group IVa, Va or VIa plus an organometallic compound of a Group I, II or III metal. The components specified are cables, condensers, coils, resistors, transformer windings and switches.  Vulcanization may be effected with unsaturated organic compounds of an acidic nature plus free-radical initiators and optionally metal oxides, or by the use of sulphur or a sulphur donor with/without natural or synthetic rubber, or by an organic peroxide plus sulphur and optionally a quinone compound.  In examples the compounding ingredients are alumina, lead oxide, magnesium oxide, sulphur, carbon black and t-butyl peroxide tetrachloride. Specification 856,733 is referred to.
Patent GB-271629-A (GB)
Title: Improvements in apparatus for the drying and pressing or shaping of garments and thelike
IPC: D06F58/12
Filed: 1926-05-05
Abstract: 271,629. Dewhurst, r., and Baker Perkins, Ltd. May 5, 1926. Endless-band conveyers, articles carried by.- Apparatus for drying and shaping garments &c. by inflattion with hot air comprises two enclosed adjacent air ducts a to which hot air is supplied by a fan m, travelling endless bands b, and slidable garment supporting nozzles e which communicate. with the ducts. In operation, the nozzles with the garments 3 attached to them are fed by hand on to the runways d secured to the undersides of the ducts and moved to the opposite end of the casing with the garments in an inflated condition by the stops f on the endless bands. At the opposite end of the casing to that at which the garments enter, the nozzles are removed from the runways and after the garments have been detached are conveyed to the opposite end of the casing by endless bands z disposed beneath the ducts. The garments are then suspended upon hooks q supported by rollers r, Fig. 6, and connected to an endless chain p disposed between the air ducts and subjected to additional drying by re-conveyance through the casing. Specification 225,059 is referred to.
Patent GB-834559-A (GB)
Title: Bearing element and method of making the same
IPC: G04B31/016
Filed: 1956-04-19
Abstract: <PICT:0834559/III/1> <PICT:0834559/III/2> <PICT:0834559/III/3> A pivot bearing comprises a metal support 1 having a coating of a synthetic polyamide having self-lubricating properties, such as nylon, which is cast to form a cylindrical bore 5 and engages grooves 4 in the support 1.  In a modification, shown in Fig. 4, the coating thickness is increased and larger grooves 18 are provided.  In a further modification, a thrust bearing comprises a circular metal element 6 which is grooved on one face to receive a synthetic polyamide coating 10.  A method of making the bearing comprises casting the plastic material at a temperature in the range of 520 DEG to 540 DEG  F. and subjecting it to a pressure of 130,000 lb./in.2.
Patent GB-672085-A (GB)
Title: Improvements relating to commutators for dynamo electric machines
IPC: H01R43/08
Filed: 1950-05-12
Abstract: 672,085. Making commutators. HOOVER. Ltd. May 12, 1950 [May 18, 1949], No, 11924/50. Classes 83 (ii) and 83 (iv). Punching; shearing.-A method of making a commutator includes the step of punching out the segments from a strip of conducting material of tapered cross-section having a layer of insulating material adhering to one face to form the insulation between adjacent segments when assembled. An insulating strip 12 of uniform thickness from a roll 13 is coated with adhesive by a roll 15 and stuck to a copper strip 10 of wedge-shaped section from a roll 11 by passing the two strips through pressure rolls 14 and a drying chamber 17. An intermittent feeding device 18 then 'feeds the compositite strip 16 into a press 20, the head 22 of which carries four plungers. One of these, 23, punches a dove-tailed notch in an edge of the strip while a locating plunger 24 enters the adjacent notch. Another plunger comprises a reciprocating cutter and severs the strip transversely mid-way across a notch to form a commutator segment having a rectangular part 39 with a dove-tail tongue 29. The segments descend a sloping shoot 30 from the bottom of which they are fed by the plunger 26 through a curved channel 32 and on to an adhesive tape 34. The required length of tape is cut off and bent into a circle and the segments stripped therefrom and pushed into the commutator ring as is described in U.S.A. Specification 539,022.
Patent GB-1032063-A (GB)
Title: Hollow-cathode discharge lamp for emission of atomic resonance lines
IPC: H01J17/38
Filed: 1963-03-26
Abstract: 1,032,063. Discharge lamps. KABUSHIKI KAISHA MITACHI SEISAKUSHO. March 26, 1963 [March 29, 1963], No. 11965/63. Heading H1D. A hollow cathode discharge lamp for use with absorption type spectrophotometers comprises a cathode 5 in the form of a hollow metal cylinder 6 closely surrounded by a quartz or ceramic cylinder 7, the assembly being placed in a glass envelope 1 and supported therein by a lead wire 9, the envelop being provided with a quartz window 2 through which passes the light emitted from the discharge. The envelope is filled with argon at a pressure of 1À5 mm. mercury and an anode 4 is offset from the centre line of the envelope. A mica ring 10 is provided to prevent a short-circuit occurring due to the sputtering which accompanies the discharge.
Patent GB-467220-A (GB)
Title: Broom or the like having an exchangeable bristle or feather portion
IPC: A46B9/02
Filed: 1936-04-28
Abstract: 467,220. Handles. RESTELLI, V., and MAGNANI, C. April 28, 1936, No. 12038. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 17, 1936.] [Class 61 (i)] A broom, mop, floor polisher &c. has a handle A provided with a fork C having enlargements 1 at the ends of the arms to engage the ends 2 of the tubular bristle carrier 3. In the modification shown in Fig. 7, the terminals 1<11> of the handle fork C<11> are of tapered hexagonal form and engage corresponding sockets 7<11> on the broom 3<11>, the head comprising a channel shaped body 9 and core 10 over which the bristle elements 4<11> are folded.
Patent GB-636801-A (GB)
Title: Improvements in and relating to fire grates for vertical circular boilers of the cochrane type
IPC: F23H13/00
Filed: 1948-05-04
Abstract: 636,801. Furnace grates. CHAPMAN, T. A. R. May 4, 1948, No. 12165. [Class 51 (i)] A grate for circular boilers consists of quadrant plates as 7, 8 and 9 defining a central opening and formed with slots 10 perpendicular to the straight edge of each quadrant, some of said slots as at 11 being open at the ends. The central opening accommodates separately replaceable firebars 14 hooked onto a rib 13 on the front quadrant 7 and resting on a sloping face 15 on the back quadrant 8, said firebars being formed with inter-engaging lugs 17 and 18 and distance pieces 19.
Patent GB-130164-A (GB)
Title: Improvements in or relating to the Treatment of Suitable Clay or Aluminium Compounds for the Production of Aluminium, Intermediate Products and Bleaching Powder.
Inventor: WELFORD ROBERT
IPC: C01B7/01
Filed: 1918-07-27
Abstract: 130,164. Welford, R. July 27, 1918. Chlorine is obtained by known methods from the gases or vapours evolved in the process described in Specification 118,312, [Class 1 (iii). Oxides &c., metallic], when the clay is heated with hydrochloric acid and when the solution is evaporated to obtain chlorides or chlorides and oxides; for instance, the gases are dried, mixed with air or oxygen, and passed over a catalyst.
Patent GB-527946-A (GB)
Title: Improvements in a frame for a picture, photograph or the like
IPC: A47G1/14
Filed: 1939-04-24
Abstract: 527,946. Stands. HOOLHORST, W. F. April 24, 1939, No. 12269. Convention date, April 26, 1938. [Class 52 (iii)] [Also in Group XV] A stand for a picture, photograph, glass sheet or the like comprises a V-shaped sheet metal plate having members 7, 8, Fig. 3. The picture I rests against the member 7 the bottom bent edge 9 of which is hooked about the lower edge of the picture and is encompassed by the lower edge-piece 3 of the picture frame.
Patent GB-1078905-A (GB)
Title: A snap-action operating system in an electric switch
Inventor: MAMIYA SHIGEO
IPC: H01H13/36
Filed: 1966-03-21
Abstract: 1,078,905. Retractive switches. SAGINOMIYA SEISAKUSHO KABUSHIKI-KAISHA. March 21, 1966, No. 12276/66. Heading H2B. Pressure on a button 4 moves a first operating plate 1, which has a U-shaped leaf spring 2 between it and a pivoted operating plate 3, the spring 2 causing snap movement of plate 3 in the gap G of a bent portion 10 of a resilient movable contactcarrying plate 5 having a snap spring 6, the contact 7 then snapping from fixed contact 8 to 9 (as shown) and the spring 6 reversing to press the contact 7 against the contact 9. Release of button 4 allows plate 3 to reverse quickly and move operating plate 1 back to its original position (Fig. 1, not shown), and also cause snap movement of plate 5 with contact 7 from contact 9 back to contact 8. Both springs 6 and 2 may be U-shaped leaf springs (Figs. 15, 16, not shown), and the plates 1, 3 and 5 may be arranged slightly differently.
Patent GB-700254-A (GB)
Title: Improvements in draught excluding strips
IPC: B60J10/08
Filed: 1951-05-25
Abstract: 700,254. Draught excluders. BRIGHT, T. J. R. Aug. 22, 1952 [May 25, 1951], No. 12341/51. Class 20 (3) A draught-excluder, particularly for motorvehicle doors, comprises a rubber or other resilient strip 5, 6, 7, secured to an attachment portion 8 of substantially channel-shape in cross-section which can be clipped on to a supporting flange 2 (forming part of the door post &c.) and which is so shaped that it can be clamped in position by an overriding trimming strip 3 or the like. The strip and attachment portion may be a unitary member ; the attachment portion may be covered with fabric 12. Specification 649,137 is referred to.
Patent GB-885232-A (GB)
Title: Photo-mechanical engraved dies and plates
IPC: G03F7/00
Filed: 1957-04-16
Abstract: 885,232. Photo-mechanical engraved plates. VOKES, L. G. April 10, 1958 [April 16, 1957; Nov. I, 1957], Nos. 12452/57 and 34240/57. Class 98(2). A mild steel or iron plate is coated with a hardenable light-sensitive composition, exposed in areas which are not to be engraved, developed, and etched through the resist so obtained, the plate being hardened before it is coated or after it is etched, or the etched face of the plate being plated with chromium after etching. In Example 1 a mild steel die blank is cleaned, where coated with bichromated albumen or polyvinyl alcohol, exposed, washed, heated to harden the resist, etched as with ferric chloride, nitric acid or a mixture of this with sulphuric acid, with treatment to avoid undercutting if necessary, after which the resist is removed and the plate carburised or case hardened. In a second example a mild steel plate is case hardened and then given a similar treatment of coating, exposing, washing, heating and etching. The second Provisional Specification indicates the use of electrolytical etching procedure.