baber/WOPTO huggingface dataset:
Patent GB-560355-A (GB)
Title: Improvements in or relating to pattern drafting for sheet metal work
IPC: B25H7/04
Filed: 1942-12-04
Abstract: 560,355. Drawing instruments. MORGAN, J. W. Dec. 4, 1942, No. 17249. [Class 97 (iii)] Relates to a method of, and instruments for, tracing patterns on sheet material comprising building up an instrument or instruments by means of discs or shaped members connected by distance pieces in such a manner that when rolled on the sheet material a pattern is traced or described by means of marking material on the edges of the discs &c. As applied to a pattern for a kettle hood or spout as shown in Fig. 9, an instrument is formed by means of a disc j, Fig. 10, and two members k, l angularly interconnected, the disc j being connected to the members k, l by a distance rod m. The edges of the disc and members are -provided with marking ink so that when the instrument is rolled over a paper &c. a pattern as in Fig. 9 is traced out, which pattern can be enlarged if necessary and transferred to the sheet material such as sheet metal. The sheet metal blank is then bent round and seamed by connecting the edges s<2> so producing a spout such as is shown in elevation and plan in Figs. 7 and 8. Other patterns can be traced by appropriate instruments, more than one instrument sometimes being used for one pattern.
Patent GB-421415-A (GB)
Title: Improvements in and relating to screens and materials for the beds thereof
IPC: B07B1/46
Filed: 1933-06-17
Abstract: 421,415. Metallic fabrics. LOCKER & CO., Ltd., T., Church Street, Warrington, and LOCKER, J. R., Fairways, Whitefield Road, Stockton Heath, both in Lancashire. June 17, 1933, No. 17309. [Class 45] [See also Groups II and IX] Screens or screen materials for facilitating the elimination of flat pieces in the screening of stone for road construction &c., in which the members may be crossed by weaving and may be soldered at the crossing points, consist of straight or crimped members 1 arranged singly or in groups at distances apart relatively wide compared with their width and undulatory members 2 at right angles thereto, forming a surface with undulations of greater depth than the thickness of the screen. As shown the members 1 may be disposed symmetrically about the peaks of the undulations of the members 2, with or without the central member, or alternatively the members 1 may be arranged wholly at the peaks and troughs of the members 2.
Patent GB-1015855-A (GB)
Title: An electromagnetic arrangement
IPC: H01H50/30
Filed: 1964-04-27
Abstract: 1,015,855. Electromagnetic relays. H. SAUER. April 27, 1964 [April 26, 1963], No. 17309/64. Heading H2B. The armature of an electromagnetic relay is pivoted at its centre of gravity within the operating winding. In Fig. 1 (not shown) one end of the armature 9 is movable between a pair of permanent magnets 10 which are pressed against plates 8 by the side walls 7 of magnetic frame 2 and are located beneath a pair of ridges 6 formed in the end cheeks of the winding former 1. The two plates 8 support the spindle 5 of the armature. Screws 3 which engage the magnetic frame 2 and one plate 8 or the other plate 8 and a platform 11 retain the parts in position. A glass bead 15 carried by the armature actuates a change-over contact set 13, 14 mounted on a base 18 of magnetic material. The magnets 10 act in the same sense, their flux paths being shown in dotted lines, so that the armature movement depends on direction of current in the winding. In Fig. 2 (not shown) the former is located in a slot 41 in the base and a recess 21 in a magnetic cross-piece 24 by projections 40, 21 in its end cheeks. The armature is biased by a spring 25 whose bias is adjusted by lugs 29. The armature actuates a change-over contact set by means of spring 30 carrying insulating studs 37. The spring may be non-magnetic to prevent sticking, or steel if high holding forces are required.
Patent GB-896934-A (GB)
Title: Improvements relating to diffraction gratings
Inventor: ENNOS ANTHONY EDWARD
IPC: G02B5/18
Filed: 1959-05-21
Abstract: A reflecting phase diffraction grating comprises a base plate with an optically flat surface, several parallel sided strips of a first material on this surface, the strips being of equal width and adjacent strips being spaced apart by a distance equal to their width and the thickness of the strips being equal to one quarter of a wavelength of the light to be used with the grating; a reflecting layer of a second material covering the strips and the uncovered portions of the surface so as to form a reflecting surface with several parallel sided steps corresponding with the strips and a transparent layer of silicone monoxide covering the reflecting surface.  The diffraction grating may be made by applying to the optically flat surface of a block, a layer of photo-sensitive resist material on which a diffraction grating pattern is contact printed so that on subsequent development a negative image of the grating in hardened resist material remains upon the surface of the block. The block is then placed inside a vacuum chamber and cleaned by means of a glow discharge whereupon the chromium is vaporised to form a layer over the uncovered part of the surface of the block and over the resist material.  The chromium layer is deposited until its thickness is equal to one quarter of the wavelength of the light to be used. On removal of the block from the vacuum chamber it is rubbed with a pad soaked in hydrogen peroxide or nitric acid so as to remove the resist material and its overlying chromium layer.  The block is then replaced in the vacuum chamber and cleaned again before a layer of aluminium, chromium or rhodium is deposited on the pattern of chromium and the uncovered portions of the surface of the block so as to result in a reflecting surface in the form of a series of steps, each of a thickness equal to one quarter of a wavelength of the light to be used with the grating.  Finally, a layer of silicon monoxide is deposited over the second layer to form an abrasion resistant coating.  In a modified method the block is first given a silver coating and this is overcoated with photo-sensitive resist material in which a negative image of the grating is formed as before.  The uncovered portions of the silver layer are then etched away with an alcoholic ferric nitrate solution and resist material covering the remaining portions of the silver layer is removed as by weak acetic acid and immersion in a trypsin suspension to leave silver strips on the block.  After cleaning, a chromium layer is deposited by evaporation in a vacuum and the silver strips with overlying chromium layer are removed as before.  Thereupon a second reflecting coating and a silicon monoxide overcoat are applied as in the first method. Apparatus for measuring the thickness of the chromium layer is also described (see Group XL(b)).
Patent GB-581548-A (GB)
Title: Improvements in or relating to the production of cheese with an artificial rind
IPC: A23C19/09
Filed: 1944-09-12
Abstract: In producing cheese provided with a rind, a thin-walled envelope is prepared from a casein containing mass capable of ripening; the envelope is then tightly filled with the unripened cheese mass proper, closed with a lid of similar composition to the envelope, and the whole subjected to the ripening and usual treatment of rind cheeses.  The envelope is hardened, supported during filling by an auxiliary mould, and agitated to ensure tightness.
Patent GB-389798-A (GB)
Title: Improvements in and relating to parachutes and the like
IPC: B64D17/32
Filed: 1931-06-16
Abstract: 389,798. Strap fastenings. BURGERHOUT, H. A., 1, Westplein, Rotterdam, Holland. June 16, 1931, No. 17518. Convention date, June 16, 1930. Void [Published under Sect. 91 of the Acts]. [Class 44.] In a fastening for the straps of parachute harness the ends of the straps, not shown, have metal loop or other fittings which are inserted in slots 34 in a housing 10 and are retained by latch-bolts 23 loaded by springs 25 and simultaneously withdrawn by a sliding member 20 having nut engagement with a screw spindle 13. The spindle has a pivoted handle 17 which can be folded against the housing, as shown, and retained by a spring clip 18. The housing has a removable cover-plate 32 and a flange 11 by which it can be fixed to the harness. Movement of member 20 is limited by plates 28, 29 held in spaced relationship by distance-pieces 30 and screws 31.
Patent GB-263889-A (GB)
Title: Improvements in or connected with automatic fire-arms
IPC: F41A17/32
Filed: 1925-07-09
Abstract: 263,889. Birmingham Small Arms Co., Ltd., and Norman, G. July 9, 1925. Breech actions. sliding breech-block.-A safety device, adapted to lock the firing mechanism and the breech-bolt of an automatic gun of the type having a fixed barrel and a rotary reciprocating breech-bolt, is arranged so that it can be readily operated by the shooter's forefinger when the gun is gripped ready for firing. As shown, the safety device comprises a rotatable bar 1 having an operating-lever 15 at the rear and having its front end formed with a cut-away part 13 and with gaps 11, 14. In the safety position, the front end engages a notch 9, Fig. 3, in the breech-bolt and the narrow gap 11 engages a projection 12, Fig. 7, on the sear 8. A turning movement of the bar brings the cut-away part 13 and the wide gap 14 into the paths of the breech-bolt and sear respectively, thus allowing movement of these parts. The operating-lever 15 is arranged in a slot at the right-hand side of the body in a position to be reached by the forefinger.
Patent GB-204386-A (GB)
Title: Improvements in means for automatically stopping trains when the signals are set at "danger"
IPC: B61L3/04
Filed: 1922-06-27
Abstract: 204,386. Leadley, H. W. June 27,1922. Track apparatus for actuating signals on trains and stopping trains.-Comprises a particular arrangement of ramp-operated apparatus whereby the brakes are applied and the steam valve closed automatically when a locomotive over-runs a signal set to " danger." Two locking devices are also provided to hold the ramp raised in the danger position, one operating automatically each time the signal is placed to " danger," and releasable from the signal box, the other operating when a signal wire &c. breaks, and not releasable from the signal box. A ramp a, Fig. 6, is supported on crank discs c<1>, one of which is rotated so as to raise the ramp when the signal is placed to " danger." A shoe e, Fig. 2, in a guide f, when raised by the ramp operates the brake-valve i by a slot and pin connection j. A fall of pressure in the brakepipe k operates a piston in a cylinder j<1> so as to close the throttle lever q by means of linkwork m, n, p. Operation of the valve i by hand therefore closes the throttle. The ramp is weighted so as to tend to assume the " danger " position and is held in that position by a spring catch r locked by a member r<1> which is passed into an aperture in the horizontal arm of the catch. Member r<1> is moved into engagement by a spring s acting through linkwork, and is disengaged by a pedal t, Fig. 8, in the signal-box. The pedal is locked in the depressed position by a catch t' when the lever is pulled to " clear," and is released by a link u<1> when the lever is returned to " danger." If the operating connection between the ramp and signal-box breaks, the ramp moves to a higher position than otherwise so that a lever w connected with the disc c' by a link w<1> operates a plunger v to lock the member r so that it can only be redeased by hand. The valve i may be closed by a seal so as to record its operation. The apparatus may be modified for a pressure system, and for use on electric locomotives, in which case a switch is actuated.
Patent GB-1004585-A (GB)
Title: Improvements in or relating to the production of titanium diboride
Inventor: TIMMS PETER LESLIE
IPC: C01B35/04
Filed: 1961-05-15
Abstract: Titanium diboride is produced by heating at a temperature of at least 1350 DEG  C. a slug having a density of at least 1.1 g./c.c. and comprising an intimate mixture of B2O3, TiO2 and C.  The slug may be cylindrical in shape and comprise particles of TiO2 and C dispersed in a glassy matrix of B2O3 obtained by compressing the mixture in a mould at 300-1000 DEG  C. and a pressure of 100-1000 lbs. per sq. inch.  H3BO3 may be used in place of the B2O3.  The compression may be in a tube with a closed end, which may be the same or different from the one in which the slug was originally formed, and the slug pressed lengthwise and/or laterally by driving a pointed cylindrical or other rod through it in an axial direction while the slug is plastic, e.g. at 400-800 DEG  C.  The material may be longitudinally confined by a closed end of the mould and at the other by a disc with a hole through which the rod can pass.  The TiO2 may be in the form of mineral rutile or titanic oxide or preferably anakase; the carbon as graphite or carbon black in stoichiometric excess up to 5%. Up to 50% excess B2O3 may be used.  An inert atmosphere of argon may be used and the product rapidly quenched.  A carbonaceous binder, e.g. molasses may be added.  Temperatures up to 2000 DEG  C. are used and densities up to 1.8 gms/c.c. can be attained.  Specifications 804,242 and 1,004,586 are referred to.
Patent GB-499749-A (GB)
Title: Box-like appliance for holding potted plants, cut flowers and similar articles
IPC: B65D85/52
Filed: 1937-06-26
Abstract: 499,749. Pots and receptacles for growing plants. HOBBS, W.J., and DRAKE, A. June 26, 1937, Nos. 17808/37 and 10900/38. [Class 6 (ii)] [Also in Group XVII] A casing to hold plants and seedlings is made from a blank of cardboard and comprises a base k, sides a provided with windows u, and top closure flaps l, m. The ends of the casing are partially closed by flaps o, q, and both the top and end flaps are joined by tongue-andslot connections s, t. A cord handle 11 is provided. If the plants are in pots, the latter are housed either in apertures in an inverted -U- shaped member or in recesses in a moulded sheet supported on the base k. The plants may alternatively be in soil in a tray made up from a cruciform blank with the sides held together by an elastic band.
Patent GB-717446-A (GB)
Title: Improvements in carbonylation of olefins
Inventor: KOONTZ JOHN DANA
IPC: C07C45/50
Filed: 1952-07-15
Abstract: In the process of the parent Specification the reaction product from the initial synthesis stage is freed from dissolved catalyst by adding liquid water to the reaction product and heating the mixture to an elevated temperature at which it is maintained for a sufficient time to decompose the catalyst compound.  Preferably from 2 to 50 per cent by volume of water is added and the temperature maintained at 250-500 DEG  F. with pressures of 0-500, especially 50-175 p.s.i.g. The reaction products are allowed to settle and catalyst recovered from the aqueous layer, e.g. as cobalt formate or basic formate, and returned to the synthesis. The product layer may be hydrogenated to alcohols or oxidized to acids.  A residence time of about two hours is given.  The crude aldehyde product may be degassed, e.g. by reducing pressure, before water treatment.  Cobalt and iron are specified catalysts. Tests are described in which decobalting by water injection is shown to be superior to steam or thermal treatment.
Patent GB-325765-A (GB)
Title: Improvements in centrifugal machines
IPC: B04B7/02
Filed: 1929-06-11
Abstract: 325,765. Boehm, P. March 22, 1929, [Convention. date]. Guards.-A centrifugal machine has a spindle b carrying a rotary drum c, which is surrounded by a double-walled protective casing. The inner wall d of this casing consists of corrugated sheet metal, and the space between the inner and outer walls d, e is filled with elastic material, for instance cork. The casing forms an independent unit and can be fitted to any existing machine.
Patent GB-635336-A (GB)
Title: Improvements in or relating to a method of forming synthetic rubber and the product resulting therefrom
IPC: C08F36/04
Filed: 1944-09-21
Abstract: Synthetic rubber is obtained by mixing butadiene with styrene, a derivative thereof or acrylonitrile and a polymerization catalyst, heating the mixture under agitation in aqueous emulsion in a closed zone to 36-40 DEG  C. to create a pressure of the order of 45 lbs. per sq. in. and maintaining the mixture within that temperature range until the pressure has dropped to zero. Normally, the ratio of butadiene to olefinic compound is within the limits 3 : 1 and 1 : 3. Potassium persulphate is the preferred catalyst, but sodium and ammonium persulphates are also specified.  Higher yields are obtained if to the reaction mixture is added 22 per cent of cyclohexane and at least 2 per cent of sodium hydroxide based on the weight of the monolefinic compound, and preferably also a soap solution.  On preparing such an emulsion a pressure of 27 lbs. per sq. in. is produced on enclosing it and polymerization is carried out by heating to 36-40 DEG  C., when the required pressure of 45 lbs. per sq. in. is obtained.  The latex obtained may be coagulated by acids, e.g. 15 per cent hydrochloric acid.  Specification 18054/44 (as open to inspection under Sect. 91) is referred to.
Patent GB-570383-A (GB)
Title: Improvements in or relating to multi-jet luminous type gas-heating burners
IPC: F23D14/12
Filed: 1943-11-01
Abstract: 570,383. Gas burners. MAIN, Ltd., R. & A., and ADAM, A. J. Nov. 1, 1943, No. 18058. [Class 75 (i)] The Steatite jets 17 of the nipples 16 of a gas heating burner have rectangular axial bores 18 arranged to produce flat luminous flames inclined at an angle of about 20 to the horizontal. The nipples 16 may be screwed into a conical surface 10 on the burner head so as to project upwardly at 15 to 25 to the horizontal. A canopy 14 having a sawtoothed flange 22 formed with edges 19 parallel to the burner flames may be arranged above the burner head as described in Specification 570,384. Additional rows of nipples may be provided on the burner head as described in Specification 570,382.
Patent GB-292609-A (GB)
Title: Improvements in or relating to packings for stuffing boxes
IPC: F04D29/10
Filed: 1928-06-22
Abstract: 292,609. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). June 23, 1927, [Convention date]. Boxes; stuffing-boxes, substitutes for; connected to source of high pressure.-Sealing water is supplied to a space f in the stuffing- box of a centrifugal pump from a chamber e between the packings c, d for the pump wheel a. At starting delivery water is supplied to the space f by a pipe : i controlled by a cock k.
Patent GB-822769-A (GB)
Title: Improvements in or relating to picture transmission systems
Inventor: PARKER ERIC
IPC: H04N5/257
Filed: 1957-06-07
Abstract: 822,769. Television intercommunication networks. DECCA RECORD CO. Ltd. May 20, 1958 [June 7, 1957], No. 18154/57. Class 40 (4). [Also in Group XL (b)] A plurality of television stations, each of which is arranged for both transmission and reception with the aid of a single cathode-ray tube (see Group XL (b)), is connected by a coaxial cable network so as to permit intercommunication. Fig. 8 illustrates a network for six stations 110 to 115. Each station has a video input terminal 27, a video output terminal 35 and a synchronizing signal input terminal 20. A further terminal 30 is strapped internally to terminal 20. A common synchronizing source 116 supplies all the stations, cables being, taken from terminal 30 of one station to terminal 20 of the next and so on. A cable extends from the video output of each station to all the other stations and selector boxes 120 to 125, each with five switches, are associated one with each station -to enable desired connections to be set up between stations. The network provides the following facilities: (1) any station may transmit to one or more other stations and any: station may receive from one or more other stations, (2) the stations may work together in pairs or groups simultaneously, each pair or group being independent of the others, and (3) a station may relay picture information received from one station to another, if desired with further picture information added locally. The facility whereby one station may receive information from two or more stations is stated to be of value where information is to be combined in tabular form, each station being allocated a different part of the image area. To permit signals from two sources to be combined at a receiver without interaction, isolating resistors (as shown) or cathode followers are included in each lead from the selector boxes. Audio channels (not shown) are also provided between stations. In a second generally similar embodiment, Fig. 7 (not shown), means are provided whereby the synchronizing signals are combined with the video signals at each transmitting station and sent over a common channel. Each receiver then includes a conventional synchronizing signal separator in the video input channel and is synchronized directly from the transmitting station with which it works. This arrangement prevents image displacement due to differing delays in the synchronizing signal distribution cables between transmitter and receiver. Other embodiments, Figs. 4 to 6 (not shown), comprise networks arranged for two and three stations.
Patent GB-1383094-A (GB)
Title: Balanced maze game apparatus
IPC: A63F9/00
Filed: 1972-04-19
Abstract: 1383094 - Puzzle game L M GIOIA C ELLSWORTH and J L WEBB 19 April 1972 [19 April 1971] 18189/72 Heading A6H  A puzzle game for one or more players  includes a disc-shaped board 10 having a maze path on its upper surface and a piece e.g. ball 42 movable along the maze path, resilient means e.g. a rod 50, for movably supporting the game board 10, weights 16 for moving the game board 10 (and the game piece) on the resilient support 50 and means 14, 18 for retaining weights 16 at fixed positions on the game board 10. The board 10, made of plastics is supported on a resilient rod of metal or glass fibre 50 removably held in a collar 52 at its upper end and removably held in a collar 58 of a plastics tripod base 62 at its lower end. The weights 16 may be' steel ball bearings and the ball 42 may be made of wood or plastics and is preferably lighter than a ball bearing 16. The object of the game is to steer the ball 42 from a "start" position 40 through the maze path to a central seat 36 by arranging weights 16 at various positions around the board 10 to thereby tilt the board 10 and cause the ball 42 to roll.
Patent GB-731375-A (GB)
Title: Improvements in or relating to shoes and to the manufacture of the same
Inventor: ATKINS CYRIL
IPC: A43B3/12
Filed: 1952-07-18
Abstract: 731,375. Sandals. BROWN & CO. (LEICESTER), Ltd., T. July 20, 1953 [July 18, 1952], No. 18196/52. Class 17 (2). An upstanding peripheral wall 9, Fig. 1, is provided around at least the forepart of the insole 1 of a sandal and in the finished sandal, is located within the spaced strap portions, 2, 3, 4, 5, 7 which form the upper of the sandal and which are turned inwards and secured beneath the insole. The wall 9 serves to confine the foot and protect the toes from contact with the lower parts of such straps. It may be formed by a welt strip 13, Fig. 6, of the required length covered by a thinner piece 15 of flexible leather, one margin 15a which projects beyond the edge of the strip 13 and serves for its attachment to the insole. This attachment is made by adhesive, the margin 15a being coated with adhesive and drawn to the shape of the insole on a last by pulling on a draw-string 16 threaded under zig-zag stitches 17 on the margin 15a. The wall 9 may extend also around the heel, the heel portion 10, Fig. 1, being separate from the forward portion and joined at the opposite sides of the waist. An outer sole 11 and heel lift 12 are added to the sandal.