baber/WOPTO huggingface dataset:
Patent GB-485063-A (GB)
Title: Improvements in or connected with locks and latches
IPC: E05B55/02
Filed: 1937-07-09
Abstract: 485,063. Night latches. NICO MANUFACTURING CO., Ltd., and NIEDERDRENK, G. July 9, 1937, No. 19102. [Class 44] The bolt 3 of a night latch has a tail plate 5 formed with a cam slot 6, the side edge of which is provided with two notches 7, 8 which co-operate with a locking pin 18 on a member 17 to hold the bolt in a partially or fully advanced position. The bolt is withdrawn by the pin 12 attached to the cam plate 13 acting in the slot 6. When the bolt is fully shot, Fig. 4, the pin 18 in the notch 8 prevents it being forced back. If the knob 14 is rotated to retract the bolt, the cam 13a forces the pin 18 clear of the notch 8, and the bolt 3 may be completely withdrawn. If the knob is then released the bolt shoots forward, rotating the cam plate 13 until the pin 18 engages in the notch 7. On shutting the door, the nose 3 engaging the striking plate 28 moves backwards and the pin 18 sliding along the slanting edge 7a of the notch 7 is automatically disengaged so that the bolt shoots forward. During the advance of the bolt the pin 18 is prevented by the cam 13a from engaging the notch 7 as the cam plate 13 has not yet returned to its normal position, but as soon as the bolt is fully shot it reaches this position and the pin 18 moves into the notch 8 to lock the bolt. The latch may be actuated by the cylinder lock 24 through the arm 22. A projection 9 and recess 9a act as additional safeguards should the pin 18 be bent or broken. The latch, as shown, is suitable for right- and left-hand doors, but when required for single way operation the notches 7, 8 need only be formed in one edge and only half the cam slot 6 formed.
Patent GB-410341-A (GB)
Title: Arrangement for the parallel operation of discharge lamps
IPC: H01F38/10
Filed: 1933-07-06
Abstract: 410,341. Transformers; supply systems for vacuum &c. apparatus. TELLMANN, W., 2, Lindenstrasse, Ilmenau, Thuringia, Germany. July 6, 1933, No. 19139. [Classes 38 (ii) and 38 (iv).] An arrangement for supplying two discharge lamps 5, 6 having a falling E /I characteristic comprises a three limbed transformer core having a primary winding 2 on its centre limb and secondary windings 3, 4 on each outer limb respectively connected to the discharge lamps. Reference has been directed by the Comptroller to Specifications 125,873, [Class 38 (ii)], and 367,224.
Patent GB-378612-A (GB)
Title: A combination fire-screen and table
IPC: A47G5/04
Filed: 1931-07-03
Abstract: 378,612. Convertible tables and screens. DAVIS, W. S., 4, Euston Square, London. July 3, 1931, No. 19199. [Class 52 (iii).] A convertible fire-screen and table has a table top portion 2 wider than the space between the two uprights or standards 4 to which it is pivoted. The pivoting is effected by means of semicircular blocks 1 attached to the undersurface of the part 2, and fitted with quadrantal plates 6 with holes 7 into which, and through a corresponding aperture in each leg, spring pins 8 are pressed to enable the part 2 to be held vertically for use as a fire-screen, or horizontally for use as a table.
Patent GB-1588576-A (GB)
Title: Knitting machines
IPC: D04B15/32
Filed: 1978-05-12
Abstract: To displace the sinkers, for example of a circular knitting machine, during the loop-forming operation, there is fastened to the stationary sinker ring (7) a toothed rim (11), with which meshes a pinion (12) of a two-stage angular gear (13) connected to a feed wheel (19). The feed wheel, having take-up bosses (20), performs the function of a wedge-shaped cam part for displacing the sinkers (21', 21'', 21'''), of which one sinker (21') is located at the start of the loop-forming depth and the other sinkers (21'', 21''') have assumed half the loop-forming depth and the entire loop-forming depth respectively. By means of the feed wheel (19), extremely large loop-forming angles can be achieved without appreciable wear of the parts connected to the loop-forming mechanism, so that complete individual loop-forming can be achieved, even where high finenesses and large stitch lengths are concerned. <IMAGE>
Patent GB-147420-A (GB)
Title: Improvements in or relating to submarine sound receivers
IPC: G10K11/35
Filed: 1920-07-07
Abstract: 147,420. Behm, A. April 27, 1917, [Convention date]. Subaqueous audible signals. -In an arrangement in which sounds picked up by a diaphragm 7 are transmitted through an air-column to a microphone 9, the massive sound-tube 5 is insulated by supporting it by rubber rings 3, 4 in a protecting tube 2. The microphone 9 is mounted by springs 10 in a heavy metal casing 11, and is connected to the tube 5 by rubber tubing 8. Either of the tubes 2 or 5 may be adjustable, to bring the diaphragm 7 to a suitable distance from the ship's side 1.
Patent GB-627169-A (GB)
Title: Improvements relating to lids of food receptacles
IPC: A47J47/02
Filed: 1947-07-19
Abstract: 627,169. Sugar bowls &c. WIGGIN, W.. WIGGIN, N., WIGGIN, W. C. B., and WIGGIN, A. L. July 19, 1947, No. 19379. [Class 128] [Also in Group XVII] A sugar bowl &c. A has a lid B which, without being raised, may be slid open sideways and tilted by a pivoted yoke handle C the sides c of which pass through slots b in the overhanging margin of the lid. Part b<SP>1</SP> of the margin may curve down so as to bear on the curved-in rim a of the bowl and the outer part b<SP>2</SP>, in which the slots are made, may be horizontal. The bowl has a slot E to hold a spoon. The middle of the top of the handle may be stepped-up. According to the Provisional Specification a horizontal bar may be secured to each side c of the handle just beneath the lid, parallel with but unable to enter the slot b, so that turning-down of the handle immediately tilts the lid.
Patent GB-889764-A (GB)
Title: A process for the production of alkyl sulphinic acids and alkyl sulphonic acid compounds
Filed: 1958-06-17
Abstract: Alkyl sulphinic acids are prepared by adding an aluminium trialkyl to a substantial excess of SO2 over the theoretical 3 moles per mol of trialkyl and treating the resulting aluminium alkyl sulphinate with a strong acid whose aluminium salt is water-soluble.  In modifications, the intermediate aluminium alkyl sulphinate is oxidised with an alkali metal permanganate to give the corresponding aluminium alkyl sulphonate, which may be acidified to liberate the free alkyl sulphonic acid, or the aluminium alkyl sulphinate is suspended in dilute hydrochloric acid, the liberated sulphinic acid is oxidised with chlorine and the resulting alkyl sulphochloride is decomposed with boiling water yielding the alkyl sulphonic acid.  The SO2 may be used in liquid form at -60 DEG C. or at higher temperatures under pressure, or in solution in an organic solvent.  In a typical example (1) a toluene solution of aluminium tri-n-decyl is added dropwise to a toluene solution of SO2 at -45 DEG C., thereafter excess SO2 is evaporated off and the residual aluminium n-decyl sulphinate is treated with dilute HCl and the resulting decyl sulphinic acid is purified via its Na salt; butyl, octyl and cetyl sulphinic acids are similarly prepared.  In example (4) aluminium tri-octyl is reacted with SO2 in toluene in an autoclave at 20 DEG C.-30 DEG C. and the product is worked up as in (1). The aluminium alkyl sulphinates obtained are also titrated with KMnO4, yielding the corresponding sulphonates, and aluminium cetyl sulphinate, obtained as in (1), is converted to 1-hexadecane sulphonic acid via the sulphochloride.  The alkyl sulphinic acids are polymerisation initiators.  Reference has been directed by the Comptroller to Specification 819,181.
Patent GB-648552-A (GB)
Title: Improvements in and relating to reflectance measuring instruments
IPC: G01N21/55
Filed: 1948-07-21
Abstract: 648,552. Measuring reflectance photo-electrically. BRITISH THOMSON-HOUSTON CO., Ltd. July 21, 1948, No..19537. Convention date, July 24, 1947. [Class 40 (iii)] To compare the reflectance of a surface with that of a standard for light of a particular wavelength (2357 A is mentioned) a box is provided containing a light source which illuminates the surface under test and a pair of differentially - connected photo-cells, both of which cells respond equally to light of other wavelengths but only one of which responds to light of the selected wavelength receiving light reflected from the surface; the rear of the box is detachable and its inside of known reflectance, which constitutes the standard surface, may be removed and replaced by the surface under test. The box also contains a microammeter 16 indicating the difference in output of the two cells with a parallel rheostat and a starting switch 20 for the lamp 2 which is a U-shaped discharge tube. The light emitted from this lamp is rich in radiation of the selected wavelength. One of the cells has a cover of quartz which transmits easily the selected wavelength, the other a glass cover which does not. In use, the cells are first balanced for wavelengths over 3000 Š by covering both cells' with a glass plate transparent to these wavelengths and adjusting opaque strips 25, 26, to obscure part of the face of either cell. The glass plates are then removed and the rheostat shunting the microammeter is adjusted until the known reflectance of the standard surface is indicated on the meter scale. The back is then slid out of guides 9, 10 and the rear of the box placed against the surface under test when the reflectance of the surface is indicated directly.
Patent GB-891719-A (GB)
Title: Production of patterns on cloth or similar substances
IPC: G03G7/00
Filed: 1958-06-18
Abstract: 891,719. Charging with static electricity. AUSTRALIA, COMMONWEALTH OF. June 18, 1958 [June 28, 1957], No. 19544/58. Class 35. [Also in Groups XVI and XX] Apparatus for performing a method of producing printed patterns on cloth (see Group XVI) comprises a roller 11 having a photoconductive surface which is charged by a corona discharge device 17, the charge being modified to form a pattern by light from a source 16 which passes through a slit 15 in a shield 14 and projects an image from a rotating patterncarrying member 13 on to the roller 11. A web of cloth 5 is fed between the roller 11 and an absorbent surfaced roller 8 which revolves in a container of liquid developer 2. Specification 835,044 is referred to.
Patent GB-848104-A (GB)
Title: Improvements relating to zip fasteners
IPC: A44B19/04
Filed: 1957-06-21
Abstract: 848,104. Sliding clasp fasteners. RUHRMANN, J. June 21, 1957, No. 19601/57. Class 44, A zip fastener of the so-called invisible type comprises left and right hand teeth secured on respective supporting tapes in which each tooth has the form of a U-shaped member 1 consisting of two limbs 2, 3 of unequal length between which the edge of the supporting tape is gripped and which are connected by a web portion 6, the longer of the two limbs being formed with coupling elements 4, 5 on its side faces adjacent its end, and the outer surface 7 of the web portion being initially slightly concave or flat and becoming flat or slightly convex after the limbs of the tooth have been compressed together to grip the supporting tape. The fastener includes a slider, Fig. 5, surfaces 8, 9 and 10 of which are so arranged that they co-operate with the outer surfaces of the teeth to prevent the latter canting during movement of the slider.
Patent GB-936515-A (GB)
Title: Improvements in hydraulic control valves
IPC: F16K11/085
Filed: 1961-05-31
Abstract: 936,515. Valves. A. R. CROSS. May 29, 1962 [May 31, 1961], No. 19650/61. Class 135. [Also in Group XXXI] A rotary valve for use in a motor vehicle power assisted steering mechanism comprises an outer casing 1 having four pipe connections 4 leading to annular recesses 5, a sleeve 2 rotatable within the easing having ports 6 which register with the annuli and a spool 3 (Fig. 3) having short slots communicating with its hollow interior and longer shallow grooves, the spool being permitted rotation within the sleeve limited by a stop 7 so that the grooves operate to connect either the inner and outer pairs or adjacent pairs of pipe connections, through the grooves or through the slots and interior of the spool. The valve may be incorporated in a motor vehicle power-assisted steering mechanism, manual steering effort being transmitted through the sleeve and spool parts after the lost-motion has been taken up.
Patent GB-912812-A (GB)
Title: Improvements in or relating to alarm clocks
IPC: G04C21/28
Filed: 1959-06-09
Abstract: 912,812. Time switches. MANUFACTURE D'HORLOGERIE FREY & CO. S.A. June 9, 1959 [April 8, 1959], No. 19666/59. Class 38 (5). [Also in Group XVIII] An alarm clock comprises a clock movement combined with an alarm setting mechanism and an associated alarm release mechanism adapted to control the actuation of contacts for closing an electrical circuit of a waking sound generator, the said alarm setting mechanism comprising a minute hand and a settable rotary disc bearing a twenty-four hour scale in which the twelve day hours are distinguished from the twelve night hours, whereby the alarm setting mechanism is adapted to be set to give an alarm at any one of these hours plus any number of minutes from zero to sixty, and the clock dial and the said settable twenty-four hour disc being separate and spaced apart from one another. The alarm setting mechanism comprises a minute diol 10, Fig. 1, over which moves a pointer 5 carried by a manuallyrotatable spindle 3 which through reduction gearing drives twenty-four hour disc 7 located below the dial 10 and visible at a window 11 adjacent an index 12. The hour scale of the disc 7 has the night hours distinguished from the day hours. The alarm mechanism is of the kind disclosed in Specification 906,072, and is operated on closure of switch contacts upon axial movement of a spindle 13, Fig. 3, under the force of the spring 20. This axial movement is effected at the set time by the co-operation of two coaxial complementary cam members 14, 15, the lower one of which is set through the gear train 4, 8, 29, 16 and the upper one of which is driven from the going train through the gears 28, 17, there being a pin-and-slot lost motion connected between the gear 17 and the cam 15. The setting mechanism may comprise Fig. 3, a spindle 30 within and connected to a sleeve 31. To set the hands of the clock movement the spindle 30 is disconnected from the sleeve 31 by axial displacement whereupon an inverted cone 32 on the spindle 30 enters an eccentrically-disposed hollow pinion 34 so that the said pinion is displaced transversely and connected to the spindle 30 by pins 33. The transverse movement of the pinion 34 is transmitted to a yoke member 35 which carries a pinion 38 into engagement with the gear 39 of the setting train. The alarm release and setting mechanism is located between two plates 23, 24, Fig. 8, which can rotate about the axis of the clock hands 27 to locate the alarm setting mechanism in any desired angular position with respect to said axis.
Patent GB-312529-A (GB)
Title: Improvements in or relating to wire spoke wheel building
IPC: B25B13/48
Filed: 1928-07-06
Abstract: 312,529. Pugh, J. V. July 6, 1928. Stud-boxes and like devices. - A device for screwing up the nipples of wire spoke wheels comprises a spindle a having at one end an aperture e tapped to screw on the end of a spoke and surrounded by a ring of ratchet teeth f or otherwise formed so as to engage and rotate the nipple. The end of the spindle is recessed to fit the head of the nipple, the depth of the recess being preferably such as to ensure a good grip by the teeth. A hole b is provided for a tommy bar and the upper reduced end of the spindle is stepped at h and provided with a V- notch j for engagement by a rotating device. In operation, the wheel is assembled with the spokes projecting slightly through the nipples, the hub and rim are positioned correctly and the spindle a is then applied to each spoke in turn to screw up the nipples. Specification 289,554 is referred to.
Patent GB-1309787-A (GB)
Title: Bearings
IPC: F16C23/08
Filed: 1970-04-24
Abstract: 1309787 Mounting bearings G BAYARD 24 April 1970 [30 May 1969] 19790/70 Headings F2A and F2U A bearing comprising inner and outer elements 5, 4 separated by caged rolling elements 6, has its inner race mounted on a shaft 2 to be fixed against relative rotation but with radial play (e.g. of 10 to 20 microns) not less than the ecentricity of the bore of the race from its centre of rotation. The outer race 4 may be similarly fitted in a support 3. Each race may have an annular groove 12, 13 fed with pressurized oil, e.g. via a duct 17, filling the spaces between the splines 8 and 9, and, 10 and 11. Such an arrangement may be used to mount a, gas turbine, Fig. 3.-
Patent GB-597346-A (GB)
Title: Sheet feeding apparatus
IPC: B65H7/12
Filed: 1945-08-01
Abstract: 597,346. Sheet-feeding apparatus. DEXTER FOLDER CO. Aug. 1, 1945, No. 19819. Convention date Nov. 18, 1944. [Class 100 (ii)] A calipering device for stopping the action of a sheet-feeding apparatus if more than one sheet is fed at a time to a printing or like machine is described in connection with a stream feeder in which the sheets are fed by rollers 13, 14, Fig. 1, and tapes 15 over a feed board 16 to front stops 24, and the calipering device is arranged to act on the forward edge of a sheet after the preceding sheet has been taken by the oscillating gripper 28 for feeding to the machine The calipering device comprises a roller 37 which is rotated intermittently through angles of 120 degrees, and is formed with three projecting surfaces 39 which engage the sheet when the roller 32 rotates, the surfaces 39 being separated by recesses 38 which permit free passage of the sheet when the roller 37 is stationary. The roller 37 coacts with a calipering segment 89 mounted in a lever 91 which can be adjusted by a screw 97 and locknut 101 to set the segment 89 to permit the passage of one or more sheets between the surfaces 39, 89 without rotating the segment, but, if additional sheets are present when the roller 37 is rotated, the segment 89 is moved clockwise, Fig. 5, and an arm 102 moves with it and permits a spring-controlled pendulum device 103 to follow-up the motion of the segment, and an eccentric member 104 is moved into the path of a reciprocating feeler member 108 shown in Fig. 7 as being moved counterclockwise. The member 108 is actuated by cam-and-lever mechanism from a cam 131, Fig. 1, driven from the printing-press, and when the feeler 108 is arrested the roller 130 of the cam mechanism is prevented from following the. low part of the cam. A shaft 120, Fig. 1, forming part of the lever-and-link mechanism, actuates mechanism for stopping the feeder and tripping the press, when its rocking movement is interrupted. The caliper member 89 is held in tripped position by a gravity pawl 138 which engages a tooth 139 to hold the member 89 in its displaced position until the mechanism is reset by hand. The roller 37 is mounted in ball bearings in a bracket 32 which can be adjusted laterally of supporting brackets 31 to accommodate sheets of different widths. The roller 37 is geared to a wheel which is intermittently rotated by a ratchet and pawl on a rocking lever, a spring-controlled stopping- device being used to ensure that the roller 37 rotates 120 degrees for each oscillation of the pawl lever.
Patent GB-750429-A (GB)
Title: Improvements relating to machinery safety guards
IPC: F16P1/02
Filed: 1953-07-17
Abstract: 750,429. Machinery guards. GIBSON, E. B. June 17, 1954 [July 17, 1953], No. 19823/53. Class 80(4) A guard, particularly for machines employing a rotating tool. comprises two circumferentially telescopic part-cylindrical members 10, 13, preferably at least partly of transparent material, secured to partcircular end plates 11, 14 which are slidable one upon the other between frame members 16 and plates 18 secured thereto, the two members 16 being interconnected by rods 22 and having supporting arms 25. Screws 20 clamp the guard members in adjusted position to give any desired opening. Two pins 27 on each end plate 14 coact with two slots 28 in the frame member 16 to limit the movements of the guard member 13, and two pins are similarly provided on the inside of each plate 11 to coact with shoulders on the plate 18 (Fig. 3, not shown), and limit the movements of the guard member 10. Eyelets 31 may be provided to receive pipes conveying cooling fluid. In a modification each of two semi-cylindrical transparent guard members is secured at one end only to a flanged ring, the two rings being slidable between radial flanges on a pair of fixed rings. A clamping screw is provided and each guard member may have an operating handle.
Patent GB-924545-A (GB)
Title: Process for the manufacture of silicon of high purity
IPC: C01B33/02
Filed: 1961-06-01
Abstract: High purity silicon is prepared by reacting silicon halides with excess hydrogen at a temperature of at least 2500 DEG C., the resulting product being quenched, condensed to remove hydrogen, and fractionated.  The silane and usually the mono and di-halo silane fractions are then decomposed in a second stage at a temperature of at least 500 DEG C., on a wall, depositing thereon elemental silicon; the unreacted silicon halide fraction is recycled to the first stage. Silicon trihalides formed in the first stage may be either decomposed to yield silicon or recycled to the first stage.  The excess hydrogen for use may be heated by means of a luminous arc and passed through a water cooled pipe at a speed of at least 50m.sec.-1, the silicon halide being introduced by means of peripheral slots.  The mixture thus formed is impinged upon a water cooled surface at a temperature of less than 20 DEG C., and then condensed at a low temperature surface condenser and finally fractionated in a distilling column. The silane and halo-silane fractions, in the presence of a carrier gas which may be hydrogen or argon, are then conducted through a tube heated to at least 500 DEG C. where pure, compact silicon is deposited.  Specific examples include the use of hydrogen heated to 4000 DEG C., the reaction mixtures being condensed at-120 DEG C., and the halo silanes produced being decomposed in a quartz tube at 1000 DEG C.
Patent GB-762457-A (GB)
Title: Artificial tooth
IPC: A61C13/10
Filed: 1952-08-06
Abstract: 762,457. Artificial teeth. MARDER, M. Aug. 6. 1952 [Nov. 10, 1951; June 20, 1952; June 25, 1952], No. 19844/52. Class 81(2) An artificial tooth comprises a facing 1 having a rear surface 3 to be secured to a support, a layer 4 of white flexible foraminous sheet material being at least partly embedded in the rear surface of the facing for concealing the support from the. front of the facing and providing the facing with a rough rear surface. The screen 4 is in the form of metallic wire mesh or a perforated sheet of a white metal. In a molar, the facing 1 is L-shaped to fit on to a support. A groove 2 is provided in the vertical portion of the back face 3 of the facing 1 and is lined together with part of the back face with metallic wire mesh 4a or perforated metal sheet. The back face of the horizontal portion 6 of the facing 1 is also lined with a metallic wire mesh 4b or perforated metal sheet which may be integral with that lining the groove 2 and vertical back face 3.