baber/WOPTO huggingface dataset:
Patent GB-472415-A (GB)
Title: Method of producing intaglio printing plates
IPC: G03F5/20
Filed: 1936-04-06
Abstract: 472,415. Photo - mechanical printing- surfaces. FEENY, V. F. (Miehle Printing Press & Manufacturing Co.) April 6, 1936, No. 10100. Drawings to Specification. [Class 98 (ii)] Intaglio printing plates are prepared from half-tone plates, half-tone prints, or, in the case of multicolour printing, a set of proofs from the colour separation plates, the dot formation of which is not suitable for intaglio printing, by producing a negative or set of negatives from the original using a camera in which the lens is adjusted so that the image is sufficiently distinct but the dots are blurred and copying the negative through a half-tone screen placed at such a distance from a ground glass screen used to make the adjustment and occupying the position subsequently to be occupied by the light sensitive surface, that pin-point dots appear in the light areas of the ground glass screen, the resulting positive having a new set of disconnected and sharply defined dots of varying size which in the etched plate leave continuous ribs between them to support the doctor blade. In carrying out the process as applied to a set of plates for multicolour work, proofs are made from each of the plates and are copied in a camera with the lens slightly out of focus so as to blur the dots. The resulting negatives are then recopied through a half-tone screen arranged as above and set at an angle to the lines of the original screening. For example, in the case of red, yellow, blue and black plates for colour printing, the proofs may be copied with a screen turned through 30‹ to the screening in each original. If desired, dots in the whites of the final positives may be obliterated by reducing. The positives are then used to prepare the plates, e.g. by printing therefrom onto carbon tissue, transferring this to a copper plate and etching with iron perchloride. Or the positives may be printed direct onto plates, coated with bichromated glue or shellac, which are then developed and etched. Type matter in the original is copied separately and the resulting negative used to produce a screened positive which is assembled with that of the plate of the colour in which the type matter is to appear, e.g. black. Specification 470,385 is referred to.
Patent GB-633435-A (GB)
Title: Improvements in or relating to process for producing paraacetylbenzyl acetate, para-(alpha-hydroxyethyl) benzyl acetate and para-(alpha-acetoxyethyl) benzyl acetate
IPC: C07C67/05
Filed: 1947-04-17
Abstract: Para-acetyl-benzyl acetate is obtained by heating para-ethyl-benzyl acetate in the liquid phase with gaseous oxygen in the presence of an oxidation catalyst; the product may be catalytically hydrogenated to yield para(alpha-hydroxy-ethyl) benzyl acetate, which is then acetylated to give para-(alpha-acetoxy-ethyl) benzyl acetate.  Any metal oxide or hydroxide oxidation catalyst may be used, e.g. chromium oxide, a preferred catalyst being chromium oxide and calcium carbonate in the proportions of one to four by weight.  The oxidation is preferably carried out between 110 DEG  C. and 160 DEG  C. at atmospheric, reduced, or slightly increased pressure.  The oxygen may be pure or mixed with an inert gas, e.g. as air.  Examples are given of the three steps of the process and also of the production of the starting material from ethyl benzene, which is converted by means of hydrogen chloride and paraformaldehyde into para-ethyl-benzyl chloride and the latter heated with sodium acetate and glacial acetic acid to give para-ethyl-benzyl acetate.  The para-acetyl-benzyl acetate may be converted into the semicarbazone and the 2 : 4-dinitro-phenyl-hydrazone.
Patent GB-181177-A (GB)
Title: Improvements in means for conveying rotary motion
IPC: F16H21/14
Filed: 1921-04-06
Abstract: 181,177. Forsyth, J. L., and Bopp, A. April 6, 1921. Conveying rotary motion.-A driving-shaft 3 carries several cams 6, each adapted to produce several oscillations of a rocking lever 8, bearing against it, for each revolution of the shaft 3. The other ends of the levers 8 are connected by links 11 to crank arms 12 on the driven shaft 13, which thus rotates several times as fast as the shaft 3.
Patent GB-316906-A (GB)
Title: Improved method and apparatus for the production of facings, such as road surfaces and floorings, or other structures
IPC: E04G21/08
Filed: 1928-04-04
Abstract: 316,906. Deniau, M. April 4, 1928. Addition to 282,039. Laying down materials, machines for. - Concrete, asphalt, and like plastic substances for the production of facings, such as roads, floors, and the like, by the vibratory process claimed in the parent Specification, according to the present invention, are subjected to the action of vibrators immersed directly in the material and displaced in the course of the work to act successively on the whole body of the material. Fig. 1 shows a compressed-air vibrator 2 of the foundry type attached to a board 1 immersed in the concrete 4 and guided by supports 3. Fig. 5 shows vibrators 5 immersed in a mass of concrete 6 spread on a road for facing the road or filling holes therein. Fig. 7 shows a vibrator comprising an elastic vessel 18 containing fluid 19 which is given rapid vibration by a plunger 22. Fig. 8 shows a compressed-air vibrator 2 enclosed in a casing 23 which is adapted to float on the concrete 24 to follow variations of level therein.
Patent GB-910006-A (GB)
Title: Improvements in or relating to digital computing apparatus
Inventor: FRIEDMAN ARYE LEIB
IPC: G06F9/26
Filed: 1960-03-23
Abstract: 910,006. Programming arrangements for connectors. DECCA Ltd. March 13, 1961 [March 23, 1960], No. 10355/60. Class 106 (1). The various steps of a microprogramme are called for over a set of gates some of which are common to a number of microprogrammes and others of which are individual to a particular microprogramme. As shown " add and " subtract " instructions are received as signals on lines 40 and 41 respectively and are applied as inputs to a number of " and " gates (shown as small rectangles). A stepping switch 47 opens these gates in turn to apply signals to further gates (large rectangles) which initiate the steps of the microprogramme. It will be seen that gates 43-46 are operative for " add " and " subtract " instructions (they are enabled over " or " gate 42) while 48 and 49 are individual to these instructions respectively.
Patent GB-1190072-A (GB)
Title: Apparatus and Method for the Control of Thermal E.M.F. in a Machine Tool
Inventor: BILLETT ROBERT ANTHONY
IPC: B23Q15/12
Filed: 1967-03-06
Abstract: 1,190,072. Testing materials. R.A. BILLETT. May 28, 1968 [March 6, 1967], No. 10394/67. Heading G1S. [Also in Division G3] In an apparatus to control the temperature of a tool on a machine the E. M. F. generated at the interface between the cutting tool and the workpiece, or a signal dependent on the actual tool temperature, compared with a reference, the error varying the cutting speed or feed drive of the machine to maintain the temperature constant. The error signal may vary the speed of an electric motor through a thyrisitor control arrangement, adjust a change speed mechanism such as a Kopp variator, or may control the admission of fluid to a hydraulic system. The tool temperature may be sensed by a thermocouple. The arrangement may be utilized as a method of testing the machinability of material by operating on a workpiece of the material until steady state conditions are achieved, and using the temperature control system as a measure of the machinability of the material. Pneumatic control of the driving mechanism is envisaged in the Specification. Where electrical control is utilized a relay may be employed to cut off any error signals below a determined value.
Patent GB-1501693-A (GB)
Title: Automatic wafer orienting apparatus
IPC: H01L21/68
Filed: 1975-03-13
Abstract: 1501693 Orientating articles CANON KK 13 March 1975 [13 March 1974] 10492/75 Heading B8U [Also in Divisions H1 and G2] The invention is concerned with apparatus for positioning a semi-conductor wafer 5, e.g. of circular form, having a peripheral orientation reference portion such as cut 5B, in a particular orientation preparatory to performing a processing step such as photomasking. The apparatus comprises a support plate 1 having upstanding therefrom a rotatable head 2, an idler 3 and a guide abutment 4 having a flat guide surface 401 preferably lying slightly outside the circle touching head 2 and idler 3 and having the diameter of the wafer 5 to be oriented. The wafer 5 may float substantially frictionlessly above the plate 1 on a cushion of air provided through an array of holes, such as 6, therein. The wafer 5 is urged into contact with the head 2 and idler 3, e.g. under the action of gravity due to a slight (# 2 degree) incline in the surface of plate 1 and/or by virtue of an inclination of the holes 5 from the vertical so that the air supply serves additionally to direct the wafer against the head 2 and idler 3. Frictional contact with the rotating head 2 rotates the wafer 5 (clockwise as shown) until the trailing end 5B<SP>1</SP> of the cut 5B strikes the guide surface 401 and is slid therealong towards the head 2. A point is reached at which, as a result of this sliding motion, the wafer periphery no longer contacts the rotating head 2 and the wafer 5 ceases to rotate, being then correctly oriented. At this point the holes 6 may be reconnected to a suction source whereby the wafer is drawn down on to the plate 1. If the apparatus is part of a turret processing machine the turret is then rotated, carrying the correctly oriented wafer to the next processing station. In order to avoid problems caused by the small fraction of wafers which will be initially fed on to plate 1 in a "dead-space" orientation, a brief reverse rotation is preferably imparted to the wafer at an intermediate stage during the clockwise rotation. This may be effected by temporarily causing the idler 3 to be driven or by directing a further air stream on to the wafer near its periphery. The idler 3 and head 2 may be pulleys, cylinders or inverted cones, and the head 2 may also be constituted by a driven endless belt.
Patent GB-1167832-A (GB)
Title: Improvements in and relating to Harrows.
IPC: A01B19/06
Filed: 1968-03-05
Abstract: 1,167,832. Harrow. LANDBOUWWERKTUIGEN-EN MACHINEFABRIEK H. VISSERS N.V. 5 March, 1968 [14 March, 1967], No. 10652/68. Heading AlB. A harrow has two transversely reciprocating tine carrying beams 34, 35 secured to a frame which also supports a crank 59 for angular reciprocation about axis 70, the crank being driven from the power take off of the tractor. The crank 59 is mounted on beam 11 by means of journal 68 and consists of two crank arms 64 which connect pivotally with beams 34, 35 and two transverse arms 58 which connect with the driving means, the part between the two sets of arms being free of bearings. The power take-off shaft is resiliently coupled by coupling 44 Fig. 4 (not shown) to shaft 42 which drives a flange 49 and flywheel 50. The rotary motion of the flange 49 is transmitted to the transverse arms 58 of the crank 59 by means of fork 55 rotatably mounted in bearing 53 pivotally attached to flange 49 and causes the crank to reciprocate about its geometric axis 60. The tine carrying beams 34, 35 are attached to the crank so that as the crank reciprocates angularly the beams 34, 35 reciprocate transversely. The beams 34, 35 are linked together and to beam 11 by levers 25 which control their relative motion. The harrow is attached to the three point linkage of a tractor. Alternative means are provided for mounting the crank on the frame, Figs. 5, 6 (not shown).
Patent GB-106819-A (GB)
IPC: A63J1/00
Abstract: 106,819. Walker, S. May 27, 1916, [Convention date]. Theatrical appliances.-The proscenism of a portable or other stage is formed with a re-entrant part fitted with a fore-stage E, preferably at a lower level than the main stage F. The proscenium opening h is arranged as shown, and the lateral parts of the proscenium are provided with openings e leading to the fore-stage. In the preferred form, the stages are formed by crates M, and the superstructure consists of a framework the parts of which are detachably connected by pin joints g, &c. Smaller crates E' form steps round the fore-stage. The dimensions of the crates are such as to permit the whole equipment being packed in them when dismantled. Lights i<1> behind screens i<2> illuminate the fore-stage.
Patent GB-713811-A (GB)
Title: Improvements in and relating to basic refractory bricks and other basic refractory products
IPC: C04B28/10
Filed: 1952-04-29
Abstract: A basic unfired refractory article comprises magnesia and from 3 to 15 per cent. iron powder which passes 28 Tyler mesh. Chromite, alone or in addition to the magnesia, may be present, but when chromite alone is used it is of the type to contain magnesia as an impurity. A binder, e.g. sulphuric acid or magnesium sulphate may also be present, and the article may be cured by treatment with carbon dioxide as in Specification, 682,642.  The sulphuric acid is added to the magnesia and/or chromite before the iron powder.  Specification 370,013 also is referred to.
Patent GB-198173-A (GB)
Title: Rack and tray for supporting tooth brushes and tubes of dental tooth paste
IPC: A47K1/09
Filed: 1922-04-18
Abstract: 198,173. Blears, J. April 18, 1922. Tooth-brush holders.-A rack and tray for tooth-brushes and tubes of tooth-paste comprises one piece of sheet metal such as aluminium, tin, enamel ware, or electroplate, shaped as shown in Figs. 2 and 3, with slots H for tooth-brushes B and a tray C for tubes D of paste.
Patent GB-718639-A (GB)
Title: Improvements in or relating to liquid filtering apparatus
IPC: B01D33/00
Filed: 1952-04-30
Abstract: 718,639. Filtering liquids. HOLLAND, A. A. April 30, 1952 [May 7, 1951], No. 10871/52. Class 46 A travelling band filter comprises a filter belt 35, Fig. 1, on to which sludge is fed, mounted on rollers 36, 37 of a frame 1 and supported during a portion of its horizontal run by a portion of a travelling band or mat 2 of interconnected trough-shaped trays 6 mounted on sprockets 3, 4 of the frame 1 and having suction means, e.g. a box 24, whereby filtrate is withdrawn from the trays beneath the portion of the filter belt in contact therewith. The trays, which include grids 14, Fig. 4, and upwardly extending curved end walis 18, are connected together by links 19 and are bolted to a flexible belt 7 having apertures 13 in register with openings 12 in the floors of the trays 6. Spaces between adjacent side walls 10 are sealed with packing, and the links 19 carry rollers 21 running on tracks 22 and engaging the sprockets 3, 4 which are driven so as to maintain the speed of the mat 2 equal to that of the fi'ter belt 35. In operation sludge at the feed end of the belt 35 in contact with the trays 6 is distributed by an upward blast of air from a duct 33 and a box 32 and filtrate is drawn through openings 12, 13 and an elongated slot of the suction box 24 and thence-through a discharge duct 30. The cake is removed from the belt 35 by a steam or air jet 44 and a scraper 39 and the belt is cleaned during its lower horizontal rim by water sprays 42 and corresponding sprays 40 clean the lower rim of the mat 2.
Patent GB-695501-A (GB)
Title: Improvements in or relating to the extractive distillation of hydrocarbons
Inventor: MORRELL CHARLES EUGENE
IPC: C07C7/08
Filed: 1951-05-09
Abstract: Close-boiling hydrocarbons, e.g. orthoand para-xylenes, are separated from each other by subjecting the mixture to extractive distillation using as solvent an aqueous <PICT:0695501/III/1> solution containing a salt of a polar organic compound (a "solubilizer"), such as a sodium salt of an organic sulphonic acid, the relative proportions of the hydrocarbon mixture and the solvent being adjusted so as to maintain a single liquid phase during fractionation.  An aqueous solution containing at least 40 per cent by weight of the organic compound, is preferably employed.  The aqueous solution may also contain an organic solvent such as aniline, and an auxiliary solubilizer such as potassium sulphate.  The best separations are achieved when the hydrocarbon mixtures have narrow boiling ranges, e.g. 20 DEG C.  A mixture comprising p-xylene (80 per cent) and o-xylene (20 per cent) is fed through line 1 into column 2, which is heated by reboiler 3; and a 40 per cent aqueous solution of sodium o-xylene sulphonate is supplied to the column through line 15. Aqueous vapours rich in p-xylene pass off overhead, and are led to condenser 7.  The condensate is passed to decanter 17 in which there is formed an upper hydrocarbon phase and a lower aqueous phase.  The hydrocarbon phase (p-xylene enriched fraction) is in part withdrawn from the system through line 19, and in part returned to column 2 as reflux through lines 20 and 15.  All or part of the water layer from the decanter is returned to column 2 through lines 23 and 15.  If desired a part of the water layer may be withdrawn through line 22 in order to control salt concentration.  Aqueous solvent enriched in o-xylene is withdrawn from the base of reboiler 3, and is pumped through line 10 into fractionating column 11, which is heated by coil 12.  The vapours taken overhead from column 11 are led to condenser 14; and the condensate is passed to decanter 31, where it separates into two liquid phases.  The upper hydrocarbon phase (o-xylene enriched fraction) is in part withdrawn from the system through line 26, and in part refluxed to column 11 through line 27.  The majority of the water phase is returned to column 11 through lines 28, 30 and 27.  Aqueous salt solution is withdrawn from the base of column 11, and is recycled to column 2 through lines 9 and 15. Other examples relate to the following separations:-p-from m-xylene, p-xylene from n-nonane, cyclohexane from benzene, n-heptane from methylcyclohexane. The separation of naphthalene and naphthalene derivatives from benzene derivatives is referred to, also the separation of propylbenzene, methylethylbenzenes, and trimethylbenzenes.  Ordinary fractional distillation, adsorption and crystallization processes may be used in conjunction with the extractive distillation.
Patent GB-493923-A (GB)
Title: Improvements in or relating to reinforced collapsible file casings
IPC: A47B88/493
Filed: 1937-04-16
Abstract: 493,923. Filing-cabinets. SCHEINMAN, S. April 16, 1937, No. 10920. Convention date, May 16, 1936. [Class 18] [Also in Group XIV] A collapsable drawer is mounted in a collapsable casing upon antifriction elements having co-operating tracks on the drawer and casing walls. Metal front and rear frames F, 27 fit over the ends of the casing to hold it erect. Both drawer and casing are formed from scored blanks of corrugated paper board or like material, the drawer sides have catches 77, 78 engaging the end walls and the drawer front 50 is metal-faced. Sockets may be provided in the frames F to receive devices for holding rows or stacks of casings in alignment. Specification 437,024 is referred to.
Patent GB-648726-A (GB)
Title: Improvements in coin-freed manually actuated mechanisms for amusement purposes
IPC: G07F17/34
Filed: 1948-04-20
Abstract: 648,726. Coin-freed amusement apparatus. SHELLEY, C. April 20, 1948, No. 10924. [Class 27] In apparatus wherein a legendbearing drum 35 is rotated after insertion of a coin into any one of a series of slots 15 and a prize token is delivered if the drum stops in a position corresponding to the slot, the prize token mechanism is constructed as a detachable unit comprising a series of storage tubes 43 fitted between upper and lower plates 44, 45 and from which tokens are delivered by slides 27, the upper ends of the tubes registering with token insertion slots 50 in the cover 51 of the apparatus and the slots 50 being normally closed by a cover plate 52 secured in position by spring loops 53 insertable into the slots. In the particular apparatus shown, tokens discharged bv the slides 27 pass to a laterally inclined chute 47 down which they roll to an outlet at the side of the apparatus. The coin slots 15 are formed by shallow channels in the face of a plate 61 closed by spring-pressed flaps 62, 63 to enable jammed coins to be released. The inserted coin is received in a pocket in a drum 17 and couples it to a rocking sector 18 connected through a resilient spring linkage 70 to an operating handle 19. Downward movement of the handle turns the drum spindle and through a cam 20 rocks a spring-loaded lever 21 which, through a pawl 36, sets the legend drum 35 spinning. The legend drum can be braked by depressing a push-button to engage a spring blade 42, Fig. 1, with the end of its spindle 38. On the spindle 38 are a series of notched discs 29, one for each coin slot and token tube, whilst the token delivery slides each have a spring-loaded actuating lever 26. If the drum stops with a notch 28 in one of the discs 29 opposite a lug 30 on one of the levers 26, that lever actuates its slide 27 to deliver a token but this only occurs if the coin has been inserted in the corresponding slot 15 and has rocked a retaining lever 31 clear of the slide 27 concerned. Casings. The mechanism is mounted on a base plate 73, Fig. 14, enclosed by a cover secured in position by catches 74 engaged over pins 75 on the cover. The catches 74 are mounted on spindles 76 and are rocked to secure the cover when the cash-box 82 is slid into position and passes over turnedup ends 77 of the spindles.
Patent GB-376379-A (GB)
Title: The construction of portable and collapsible structures for use as garages, garden shelters, camping and bathing tents and such like purposes
IPC: E04B1/344
Filed: 1931-04-14
Abstract: 376,379. Tents. COOMBS, W. T., Sunnylea Bungalow, Caernarvon. April 14, 1931, Nos. 10949 and 26141. [Class 20 (i).] An awning which is collapsable into an end frame box is provided with resilient means to take up the expansion and contraction of the covering fabric. The frame box a is provided with wheels and is formed of wood, or wood and metal, and is also provided at its rear side with a hinged flap m to engage under the front wheels of a car when the awning is to be used as a garage. The awning covering is supported on arched ribs c connected by hinged stays s, the end ones of which are connected to the box frame while the end rib is also connected to the frame by springs q so that it can move relatively to the frame. Each end of the awning is closed by a curtain sliding on horizontal rods f, g, the lower one g of which is hinged to the rib c. The forward end of the curtain is carried by a vertical rod e which can be locked to one side of the rib. The ribs may be provided with rollers k. When used as a bathing hut or garden shelter the front curtain is replaced by a hinged door, and the flap m by a larger flap a<1> which can fold up to close the rear end of the box frame. The flap is provided with clips u to receive horizontal rods disposed across the lower ends of the ribs x.
Patent GB-120530-A (GB)
Title: Improvements in or relating to Tempering Ovens or Furnaces.
Inventor: CARLISLE PERCY
IPC: C21D9/00
Filed: 1918-07-04
Abstract: 120,530. Carlisle, P., and Harbord, A. W. July 4, 1918. Tempering-furnaces.-A tempering oven or furnace designed to utilize the waste heat from any solid-fuel or gas furnace consists of a chamber with a base 1 which has two waste-gas inlets 2, end walls 4 with ledges 3 supporting a heat-distributing plate 5, and a " grill " or grid, adapted to support the articles to be tempered, consisting of parallel rods mounted in side bars 9 which rest on the plate 5. At one end is a sliding door 11, and in the roof 10 is a flue 12 with a damper 13. The plate 5 is perforated to allow the gas to pass through it. The inlets 2 may have dampers.