baber/WOPTO huggingface dataset:
Patent GB-254304-A (GB)
Title: Improvements in or relating to telephone or like systems
IPC: H04M3/62
Filed: 1926-06-21
Abstract: 254,304. Siemens & Halske Akt.- Ges. June 27, 1925, [Convention date]. Automatic and manual exchange systems.-A test relay P1 is operated by the charging or discharging of a condenser 9. As shown, the condenser is normally charged through the winding of a relay HR1 and discharges through the test relay, but it may be connected to battery instead of ground so as to be normally discharged. The relay PI remains energized in series with relay HR1, but the potential on the condenser falls to a value insufficient to energize a second test relay. In a manual exchange system the test relay may switch the cord-citcuit through when an idle jack is plugged into. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also a statement that the lead 10 may be constructed to have sufficient capacity for the condenser to be dispensed with. This subject-matter does not appear in the Specification as accepted.
Patent GB-962258-A (GB)
Title: Plastics film bags
Inventor: TILLEY HAROLD FRAME MURRAY
IPC: B65D33/24
Filed: 1961-05-01
Abstract: 962,258. Plastics bags. BRITISH VISQUEEN Ltd. April 25, 1962 [May 1, 1961], No. 15648/61. Heading B8K. A bag formed of plastics film has openings at both ends to reduce the danger that a child may suffocate itself with the bag; at least one of the openings has a closure flap. The bag may be formed from continuous strips of film, suitably folded and transversely welded and cut or torn between the bag units. The end closures may comprise a single end flap 2 (Fig. 2) which can be folded either inside the bag or over the opposite wall 4, or two closure flaps may be provided to fold as shown in Fig. 7 or in Fig. 8. The flaps may be seamed at their edges to the bag walls to form flip-closures. The bag may have gussets.
Patent GB-475368-A (GB)
Title: Improvements in or relating to the manufacture of threads and films made from cellulose acetate
IPC: D01F2/28
Filed: 1936-06-04
Abstract: Cellulose acetate filaments and films of high tensile strength are obtained by stretching them at a temperature of at least 35 DEG  C. in an aqueous solution containing acetone in a concentration of less than 30 per cent by weight, and winding at a speed of at least 100 metres per minute, the filaments or films being introduced into the solution not in the finished state but swollen with acetone in the manner of a filament or film as it emerges from the spinneret.  The products have a regular crystalline structure visible under X-rays. The temperature of the aqueous acetone solution may be near or above that of the boiling point of acetone.  The concentration of the acetone is preferably between 20 and 30 per cent.  The speed of stretching may be 300 metres a minute.  The spinnerets used are of relatively large diameter. The spinning solution may be heated and for this purpose the coagulating liquid may be utilized.  The filaments produced may be subjected to saponification to give them affinity for cotton dyes, and they may be subjected to swelling without tension so as to increase the elongation at breaking point. Specification 352,445 is referred to.  The Provisional Specification refers also to the stretching of threads and films of cellulose acetate in solutions of dioxane of 43--55 per cent strength.
Patent GB-189818-A (GB)
Title: Improvements in or relating to machines for the manufacture of glass articles
IPC: C03B9/44
Filed: 1921-06-07
Abstract: 189,818. Hall, R. F. June 7, 1921. Blowing.-A device for ejecting or facilitating the removal of glass articles from the moulds of a forming machine, particularly a machine of the type described in Specifications 165,453 and 165,800, comprises means for holding the glass article while the halves of the mould are being opened, and means for giving the article a slight push to disengage it from the mould bottom. In the construction shown, the mould 11 is pivoted to a swinging table 10, as described in the above-mentioned Specifications, and an arm 15, having a forked end 17 which engages the bottle neck, is secured to a shaft 16 which can. be oscillated by a rack and pinion actuated by a spring-controlled rod 20. The spring normally forces the rod outwards, so that the arm 15 is away from the mould. When the table 10. is lowered, the end 23 of the rod 20 strikes a. stop 26, thus causing the arm 15 to swing down and the forked end to embrace the bottle neck. The underside of the arm 15 near the fork 17 is provided with a wedge-shaped portion 25 which engages the rim of the mould. The stop 26 is controlled by a spring so that it yields when therod 20 makes contact. When the mould is opened, the pressure of the spring controlling the stop forces the wedge 25 to enter between the mould halves and the fork 17 gives the bottle neck a push which frees it from the mould. In a modification, the fork on the arm moves in a plane parallel with the face of the table 10 and the movement of the arm is effected by means of a cam.
Patent GB-183323-A (GB)
Title: Improved manufacture of red oxide of iron
IPC: C01G49/06
Filed: 1921-06-08
Abstract: Hydrochloric acid is obtained in a process of heating ferrous chloride in a current of air and steam at 250-300 DEG  C. to obtain ferric oxide.  The material is treated in thin layers in dry granular condition.  The air and steam mixture may be obtained by passing air through water at 60 DEG  C. and is supplied at such a rate that the hydrochloric acid condensed does not exceed a strength of 30 grams per 100 c.c.  Iron compounds decomposable under the conditions of the process, such as hydrated ferric oxide or ferrous carbonate, may be mixed with the ferrous chloride, and then the temperature may be higher, for instance 350 DEG  C.  A small quantity of a catalyst may also be added, salts of copper, magnesium, tin, sodium and potassium being mentioned.ALSO:Red iron oxide suitable for use as a pigment is obtained by heating ferrous chloride in a current of air and steam. The ferrous chloride, preferably in granular form obtained by evaporating pickle liquor while stirring, is spread on the floor of a muffle furnace and air moistened by passing through water at 60 DEG C. is heated to 250-300 DEG  C. and passed over it.  The exit gas is cooled to obtain hydrochloric acid, and the rate at which the current is passed should be such that the acid condensed contains not more than 30 grains HCl per 100 c.c.  The gases leaving the condenser are passed to a scrubber fed with water or pickle liquor.  Iron compounds decomposable under the conditions of the process, such as hydrated ferric oxide or ferrous carbonate, which may be in the natural condition may be mixed in finely divided form with the ferrous chloride, and in that case the temperature may be carried higher for instance to 350 DEG  C.  There may also be added to the ferrous chloride small quantities of salts having a catalytic effect, namely salts of copper, magnesium, tin, sodium, and potassium.  The addition of a copper salt is stated to improve the red colour of the product.
Patent GB-875243-A (GB)
Title: Electrical remote position indicator
Inventor: ARNOLD PETER ARTHUR
IPC: G08C19/48
Filed: 1959-05-08
Abstract: 875,243. Measuring electrically. ULTRA ELECTRONICS Ltd. Feb. 5, 1960 [May 8, 1959], No.15913/59. Class 40 (1). The angular disposition of a shaft is determined by coupling it to the short-circuited rotor SR of a selsyn unit, two of the three windings of the stator SS being connected in a bridge circuit with equal resistors R1, R2, so that the ratio of the impedances of the two stator windings is determined by the angular position of the rotor SR, and is indicated on a ÁA. meter in the bridge diagonal.
Patent GB-692436-A (GB)
Title: Improvements in or relating to electric pulse responsive circuits
Inventor: TERRY VICTOR JOHN
IPC: H03K29/00
Filed: 1949-03-25
Abstract: 692,436. Electronic counting apparatus. STANDARD TELEPHONES & CABLES, Ltd. June 26, 1950 [March 25, 1949], No. 15944/50. Divided out of 692,411, [Group XL (b)]. Class 106 (i). An electric pulse responsive circuit comprises at least three groups of static electric switches the groups being arranged in cascade and each group being operable cyclically in sequential fashion in response to pulses applied thereto and each operation of a switch in the third, or in the succeeding groups if any, is directly controlled by each of the preceding groups or occurs simultaneously with the concurrent operation of a switch in each of the preceding groups. The Specification describes more generally the pulse-counting arrangement of the parent Specification. So long as a priming pulse is present on lead 31 the pulses to be counted each fire a cold-cathode trigger tube CT35 over lead 1. Successive operations of this tube pass pulses to the trigger electrodes of a multicathode discharge tube MCT38 which is of the type described in Specification 692,415 to cause the discharge to pass sequentially from gap K41 to gap K50 and then back to K41 again (the cathodes being arranged in practice in a circle). At each tenth pulse, as the gap K50 ceases to conduct it primes a second trigger tube CT36 which is fired by the concurrent tenth input pulse in lead 1. Each tenth pulse thus fires CT36 which in turn causes the discharge in a second multi-cathode tube MCT39 to step on to the next gap. After the ninetieth pulse gaps K60 and K41 are conducting but the output pulse from the cathode of K60 only partially primes a third trigger tube CT37 which does not fire. After the ninety-ninth pulse tubes K50 and K60 are both conducting and the potential derived from K50 blocks a rectifier MR113. This prevents the discharge current of gap K60 from flowing to earth via this rectifier and so sufficiently increases the positive bias on the trigger electrode of the trigger tube CT37 that on the next incoming pulse on lead 2 this tube fires, and advances the discharge in a third multi-cathode tube MCT40, which thus counts hundreds. In a second embodiment, Fig. 2 (not shown), arranged to count to ten thousand, the three multi-cathode tubes are preceded by a fourth, similar tube. The output from the first tube is taken as before from the final cathode and is passed via a transformer to the input of the following multi-cathode tube. The cold-cathode tube couplings between the other tubes are as in Fig. 1A, but the operative pulses applied to these cathodes are derived from the said transformer and not directly from the pulse source.
Patent GB-1385127-A (GB)
Title: Preparation of solutions of flavouring acids
IPC: A23L27/00
Filed: 1972-04-06
Abstract: 1385127 Confectionery flavourings JOH A BENCKISER GmbH 6 April 1972 [28 April 1971] 15946/72 Heading A2B [Also in Division C2] Stable concentrated solutions of edible hydroxycarboxylic acids suitable as flavouring agents in confectionery are prepared by rapidly heating, 80-150C, a mixture of the solid acid with a polyhydric alcohol containing up to 30% by weight of water, and rapidly cooling the mixture. Citric, tartaric, malic, gluconic and lactic acids are used with sorbitol or glucose syrups a gluconic acid solution, glycerine, diethylene glycol, 1, 3-butylene glycol, or 1, 2-propylene glycols. Buffer salts such as alkali metal salts of citric, gluconic or malic acids up to 40% of the solution may be present. The solution may be used in the preparation of caramels or other confectionery.
Patent GB-1212466-A (GB)
Title: Hydroxyarylalkyldiethers and a method for the manufacture thereof
Inventor: KARVAS MILAN
IPC: C07C49/84
Filed: 1969-03-27
Abstract: 1,212,466. Hydroxyarylalkyl diethers. CHEMICKE ZAVODY JURAJA DIMITROVA, NARODI PODNIK. 27 March, 1969, No. 15973/69. Heading C2C. The invention comprises the hydroxyarylalkyl diether of the general formula wherein R is a group of the formula wherein R<SP>1</SP> is H, halogen, -CH 3 , -C 2 H 5  or -OCH 3 ; R<SP>11</SP> is H or -CH 3 , n is 1-10, m is 1-8, and k is 1 or 2. These compounds are prepared by reacting dihydroxyaryl derivatives of the formula wherein R is same as above, with a dihalogen derivative of the formula Hal-X-Hal in which X has the same significance as above and Hal means Cl or Br atom, in an organic solvent in the presence of an alkali metal carbonate.
Patent GB-957290-A (GB)
Title: Air filter cartridges
IPC: B01D39/14
Filed: 1963-04-23
Abstract: 957,290. Filters. CAMBRIDGE FILTER MANUFACTURING CORPORATION. April 23, 1963 [May 3, 1962], No. 15979/63. Heading BIT. A filter pocket 28 is formed of flexible sheet filter material and comprises two flanks 32, 34 joined along the top and bottom edges 36, 38 and along the downstream end 30, the pocket having an elongated rectangular open end and having within the pocket a plurality of substantially parallel spaced flexible connecting means such as stays 74, 76, 78, 80 ... connecting the flanks 32, 34 along lines 40 extending substantially parallel with the edges 36, 38, the stays 74, 76, 78, 80 ... decreasing in length from the upstream open end of the pocket to the downstream end 30, whereby when the pocket is inflated the flanks 32, 34 lie substantially in planes converging towards the downstream end 30 of the pocket. A plurality of such pockets 28 have their open ends supported side-by side within a casing 20 to form a cartridge unit, the casing being adapted to cooperate with a seal .and seat in a supporting complementary air duct frame (not shown). A frame 50 is disposed within the open, end of each pocket 28, the frames 50 being joined together and to the casing 20, e.g. by rivets. The filter material may be adhesively secured to the frames 50 and casing 20 and may extend only part way between the latter members so that they can be pinched together and spot welded. The lines 40 of stays 74, 76, 78, 80 . . . are preferably formed by chain stitching when a former, Fig. 8 (not shown), is inserted within each pocket. The filtering material may be made of fine fibreglass the exterior of which is provided with a layer of coarse netting such as cheese cloth or open mesh fabric. A layer of adhesive sealant is applied to the exterior of both flanks 32,. 34 of each pocket 28 along the lines 40 so as to fix the stitches. The edges 36, 38 of the pockets 28 are preferably tied together by flexible tapes 13. The stays 74, 76, 78, 80 . . . may be replaced by webbing or thin flexible sheet material which may be perforate and which is in the form of long tapered fingers the sides of which are sewed to the flanks 32, 34. Specification 822,464 is referred to.
Patent GB-818472-A (GB)
Title: Improvements in and relating to polymerisation
Inventor: ROSS MAURICE
IPC: B29C39/38
Filed: 1955-06-06
Abstract: A method of polymerizing polymerizable materials by the application of heat comprises detecting the onset and duration of a period during which there would normally be a sharp increase in the rate of polymerization by measurements of an electrical property of the material which varies with the degree of polymerization, subjecting the material to a temperature resulting in a safe rate of polymerization during said period, and subjecting the material from the commencement of polymerization to the onset of said period and/or subsequent to said period to a higher temperature which if present during said period would result in an undesirably high rate of polymerization.  The electrical property may be the dielectric constant, power factor or impedance.  Specified polymerizable materials are vinyl acetate, styrene, acrylonitrile, methyl methacrylate, allyl methacrylate, triallyl cyanurate, diallyl maleate and mixtures thereof.  Polymerization may be effected in the presence of catalysts, e.g. benzoyl peroxide and di-tertiary butyl peroxide, in moulds comprising sheets separated by gaskets, e.g. of nylon, polyethylene or polyvinyl chloride.  The sheets may be of aluminium or stainless steel, or of glass to which metal foils are applied to serve as electrodes, and may be connected in series with an ammeter and A.C. source to give a direct measure of the impedance.  The materials may be partially prepolymerized to a syrup before placing in the moulds.  Examples describe the copolymerization of (1) triallyl cyanurate, allyl methacrylate and methyl methacrylate, and (2) allyl methacrylate and methyl methacrylate.  Specifications 738,487, 796,867 and 818,471 are referred to.
Patent GB-401995-A (GB)
Title: Improvements in brick-making machinery
IPC: B28B1/48
Filed: 1933-06-06
Abstract: 401,995. Moulding bricks. AVAN AKT.- GES., GES. ZUR VERWERTUNG VON ZIEGEL-PATENTEN, Chur, Graubunden, Switzerland. June 6, 1933, No. 16197. Convention date, June 7, 1932. [Class 87 (ii).] Hollow bricks, closed at one end, are formed by the insertion, into a solid work piece f, of a sleeve-like cutter g, the plug to be thus removed being severed at the back by a sliding cutter m interconnected with the cutter g. The opening made in the side of the brick by the cutter m prevents the formation of a vacuum as the plug is withdrawn. The cutter g is characterized by the provision of an internal protuberance b which forms a local constriction of the internal section adjacent to the cutting point, so that the plug does not seize or jam in the cutter. The cutter g, moreover, is arranged to taper to a slightly smaller diameter at its rear end, so that the cutter has no tendency to stick in the hole. The removed plug may be used as a solid brick or blank.
Patent GB-164732-A (GB)
Title: Improvements in centrifugal fans or blowers
IPC: F04D27/02
Filed: 1921-06-13
Abstract: 164,732. Weiss, L., and Mandler, E. June 12, 1920, [Convention date]. Regulating; casings.-The delivery head of a centrifugal fan a is increased and regulated by allowing a part of the air from the fan to escape through a diffuser of one or more expanding exhaust channels to reduce the outlet resistance. On the outlet side of the fan, the gap s, formed between the bearing shield c and the casing wall d, for the passage of the air, may be regulated in size by the axial movement of a damper e on the shield c. On the other side of the fan is a gap s<1> between the suction plate f and the casing plate g, and by extending these plates radially the space s<1> is caused to act as an expanding diffuser in which the escaping air partly converts its velocity into pressure. Or this diffuser may be replaced by guide-vanes, or a spiral casing &c. Regulation of the air passing through the gap s' is effected by the movement of the plate f the flange of which has helical slots h engaging with studs i secured to the casing. A rotation of the plate by the handle k produces an axial displacement to vary the gap. By constructing the plate as shown in dotted lines, communication between the suction and outlet sides may be completely stopped. The air from the diffuser s<1> may be conducted back to the suction side.
Patent GB-823863-A (GB)
Title: Improved tape reel
IPC: G03B21/32
Filed: 1956-05-25
Abstract: 823,863. Bobbins. MINNESOTA MINING & MANUFACTURING CO. May 25, 1956 [May 25, 1955], No. 16241/56. Class 120(3) A reel comprises a central hub bounded by a cylindrical rim and at least one side face, an opening that extends inwardly from at least one paraxial slot formed across the hub rim to provide an open interior at least adjacent the slot, and a narrow radially elongated stud supported from the side face of the hub and positioned within the open interior and accessible from the side of the reel opposite the side face for inserting and releasably securing a loop of tape around the stud and wih a radially outer paraxial face of the stud forming a segment of the rim. The reel shown in Figs. 1 and 3 comprises flanges 11 and 12 which also form side faces 21 and 22 of a hub 13 having a spindle hole 15 and driving slots 17 and, as alternative driving means, holes 16 (having internal driving-pin supports 18) aligned, and in one instance connected by a channel 23, with openings 19. Between the other pair of holes 16 and openings 19, one side face in each case has a slot 24 or 34 to give access to a stud 25 or 35 (the broad sides of which may taper) protruding from the opposite face and positioned at a paraxial slot 26 or 36 in the hub so that its outer surface 27 forms a segment of the rim 20. The tape is secured by placing a loop 45 over stud 35 and tightening it on the hub with the tag-end 46 secured thereby, access to a stud being provided by an opening 19 and the continuous slot formed by slots 24 and 26 or 34 and 36. As shown in Fig. 4, the reel may comprise two sections, one consisting of the flange 11, face 21 and a ridge 41 (the outer surface of which forms rim 20) extending inwardly around the channel 23 (and hole 16) and along the slot 34 (and hole 16), and the other comprising the flange 12 face 22 and a ridge 42 nesting in ridge 41 and extending along slot 24 (and hole 16): the sections may be bonded by dipping ridge 42 into a solvent for the material thereof prior to assembly. The reel of Fig. 5 has a flange 53 comprising apertures 51, 52, extending into the side face 54, which provide access to a stud, as at 59, projecting into a cavity 56 extending from a paraxial slot 57.
Patent GB-1466931-A (GB)
Title: Control unit for paper transport
IPC: G06K13/26
Filed: 1974-04-11
Abstract: 1466931 Varying the frequency of multivibrators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 April 1974 [16 April 1973] 16313/74 Heading H3T [Also in Division H2] An astable multivibrator 59, 60 is frequency controlled by the current flowing through a transistor 70 which current is in turn controlled by the voltage at point 14 which may be maintained constant by keeping transistor 78 conductive or variable by switching off this transistor. When point 16 is held floating, transistor 78 is "on" and the voltage across capacitor 75 is fixed. When point 16 is earthed, transistor 78 is "off" and transistor 82 turns on to charge capacitor 75 to the supply voltage. This higher voltage at point 14 effectively blocks transistor 70 and the frequency of the astable is at this time determined by its intrinsic properties. Transistor 82 switches off and capacitor discharges via resistor 77 and the frequency output at 12 increases until the discharge reaches its limit.
Patent GB-318313-A (GB)
Title: Improvements in electric motors and dynamo machines
IPC: H02K5/10
Filed: 1928-06-05
Abstract: 318,313. Daun, C. L. June 5, 1928. Dynamos and motors, cooling; casings.-An open type of dynamo-electric machine is converted into a closed type machine or a closed type is produced during manufacture by fitting the machine with a member or members rotating with the rotor and having pleated or fluted surface portions constituting a number of radiallyextending channels which are exposed to atmosphere completely on one side. These members make a running joint with a fixed member in the machine whereby the machine is protected against the entry of external air, dirt, fumes or the like. In the form shown, the enclosing members 19, which are fitted, by means of hubs 18, at both ends of the rotor 9, consist of conical runners pleated or ribbed to give an increased heat transmitting area and made of metal of high thermal conductivity. The periphery of the runners is preferably turned back, as shown at 20, Fig. 2, to enter troughs 26 in fixed sleeves 21 in the motor casing and so prevent the entry of dirt &c. into the machine. The screening action is assisted by a peripheral extension 30 of the runners which further protects the trough 26 and assists in directing towards the outlets 16 the air currents which enter through the openings 14. A further sealing action may be obtained by means of a felt ring of L-section secured to the flanges 20, 30, Fig. 2, and loose enough to make running contact with the fixed annular rim 34 under centrifugal action. This pad may be saturated with oil to give a. fume-tight packing.