baber/WOPTO huggingface dataset:
Patent GB-457407-A (GB)
Title: Improvements in or relating to trays convertible into tables
IPC: A47B23/02
Filed: 1935-09-09
Abstract: 457,407. Tables or trays for armchairs. BENEST, E., 7, Buckingham Avenue, High Road, Whetstone, London. Sept. 9, 1935, No. 25074. [Class 52 (iii)] A tray a is fitted with two metal bars beach with two end lugs c to which are attached straps e of fabric, e.g. velvet or rubber. Between these are fitted pivoted U -shaped metal arms g which are caused by springs h to grip the arms f of a chair.
Patent GB-903601-A (GB)
Title: Improvements in or relating to digital data storage arrangements employing bi-stableelectrical circuits
Inventor: ELSON DAVID WILLIAM
IPC: G11C11/38
Filed: 1960-07-19
Abstract: 903,601. Digital data storage. GENERAL ELECTRIC CO. Ltd. June 7, 1961 [July 19, 1960], No. 25156/60. Class 106 (1). In a digital data storage device consisting of a plurality of registers, e.g. 1 ... 4, Fig. 1, each containing a plurality of binary digit stores, e.g. 5...9, each digit store comprises a tunnel diode and a series connected resistance, the value of which is such that for the range of voltages applied to the diode, each voltage value corresponds to two distinct values of current through the diode. Direct current bias voltage within the voltage range is supplied by the source 15 and the arrangement is such that the current through the diode can be switched from a first stable condition to the second by a pulse which increases the voltage applied to the diode above the highest value in the voltage range and can be switched from the second condition to the first, by a pulse which decreases the applied voltage below the lowest value in the range. The resistance in series with the diode may be the resistance inherent in the diode. The current/voltage characteristic of each digit store is shown in Fig. 3 where 39, 40 indicate the two operative current values through a diode corresponding to digits 1, 0 respectively. Before recording a multidigit binary code in any register, e.g. register 1, a " read " pulse is supplied to register terminals 27 so as to bring about, by reduction of the normal bias voltage, firstly the reduction of the applied voltage to point 41 and secondly upon termination of the pulse, an increase of the currents through the diodes to the larger of the two distinct values, viz. 39. Upon termination of this pulse, a second or " write " pulse may be applied to the register terminals 27 to increase the applied voltage to the point 42 to a point just below the value at which the current through any digit store falls sharply to point 40. Coincident with this pulse a pulse (" augment ") may be applied to the input terminals e.g. 33 of those digit stores required to assume the lower of the two current values. In any particular register to which both a " write " pulse and " augment " pulses are applied, the voltage applied to the digit stores is such that the stores assume the smaller of the two distinct current values. However, if no " write " pulse has been applied to the register, the currents in the digit stores return to whichever one of the two current values is registered upon termination of the " augment " pulse. The effect of the " read " pulse is to reduce the currents in the digit stores registering digits corresponding to point 39 and to increase the currents in those stores registering digits corresponding to point 40. These increases and decreases of the currents induce voltage pulses in the winding 31, 54, 55, &c., and are indicative of the values of the digits stored in the digit stores upon the incidence of the " read " pulses.
Patent GB-166469-A (GB)
Title: Improved construction of loose leaf book, album and the like
IPC: B42F13/12
Filed: 1920-09-01
Abstract: 166,469. Johnson, A. F. Sept. 1, 1920. Post files; covers; sheets.-The covers A, B of a loose-leaf binder are provided with hinged strips D, E at or near the connections with the back C, and a length of metal having prongs G and holes for the attachment of cords I is secured to the strip E. A similar length of metal J, which may be attached to a fly-leaf L, is provided with prongs K, in line but not coincident with the prongs G when the lengths are positioned as shown, and holes M for the passage of the cords I which are also passed through holes N in the strip D. The leaves are provided with perforations to accommodate the prongs G, K and cut-away portions for the reception of the cords. In use, the leaves are threaded on the prongs G, the prongs J passed into the corresponding holes, and the cords I pulled tight and fastened outside the strip D. To remove or add a leaf, the cords I are loosened, and the leaves above the desired alteration are removed on the strip J, which is not freed from the cords.
Patent GB-1043165-A (GB)
Title: Work clamping device for a sewing machine
IPC: D05B39/00
Filed: 1963-06-25
Abstract: 1,043,165. Work clamp. REECE CORPORATION. June 25, 1963 [July 19, 1962], No. 25315/63. Heading D1G. [Also in Division A3] A sewing machine has a work clamp for holding a collar interlining and a stiffener (see Division A3) in position relatively to each other while they are sewn together. The clamp comprises a base 18 and a plate 50 pivoted thereto, the plate receiving the stiffener 14 in a recess. The interlining is positioned between members 18 and 50, the pressure 64 closing the clamp and maintaining articles in position. Presser 64 is connected to the plate 50 by a pin and slot to provide lost motion to allow the presser 64 to rise a short distance before the plate 50 is raised as the arm 62 lifts after sewing. In a modification in which the stiffener is positioned below the collar interlining during stitching the base 18 has a stiffener receiving plate disposed thereon and twin pressers press the parts together during stitching.
Patent GB-407368-A (GB)
Title: Improvements in remote control apparatus for power driven boats and the like
IPC: B63H21/22
Filed: 1932-09-12
Abstract: 407,368. Pneumatic relays. MULLINS, E. E. E., 11, Thornfields Road, Heaton Moor, Stockport. Sept. 12. 1932, No. 25321. [Class 8 (ii).] In a remote control apparatus for power driven boats &c. in which the gear lever is actuated by a double acting piston similarly as described in Specification 389,556, the valve gear is modified in that further ports are provided on the cylinder of the servo-motor so that the gear lever may be moved directly from the " ahead " position to the " astern" position or vice versa without first being moved to the neutral position. The cylinder is provided with ports 1, 5 leading to one end and ports 2, 6 leading to the other and the valve b actuated by the cross-head x is provided with ports 7, 8 co-operating with ports 1, 2, 5, 6 and also a port 11 connected to the source of vacuum. A lag valve c is fitted with ports 9, 10 and a slot co-operating with the rod d of the valve b and also provided with detents to hold it in two positive positions. In a modification a rotary valve acting on the same principle is described and adapted to work with liquid as a medium.
Patent GB-205958-A (GB)
Title: Improvements in wheel hubs with antifriction bearings
IPC: B60B27/00
Filed: 1922-09-19
Abstract: 205,958. Stephens, A. J., (Timken Roller Bearing Co.). Sept. 19, 1922. Roller bearings; dust, excluding.-To facilitate assembly and reduce grease leakage a wheel hub 3 comprises in combination, roller-bearing cups 8, 17, bearing against abutments 5, 7, in opposite ends thereof, a cone 9 at the inner end of the hub which limits axial movement of the rollers 12 and which has a creeping fit with the spindle 1, and a packing device including a pliable ring 15 preferably of felt or other fibrous material and side metal rings 13, 14. The rings 13, 14 have extensions 13<1>, 14<1>, in telescopic engagement, and they are forced within the ring 4 of the hub to butt against the cup 8 and allow the packing ring 15 to wipe the cone 9. In assembling the whole of the inner bearing 8, 9, including the packing device 15, and the cup 17 of the outer bearing are fitted in the hub which is then slid on the spindle 1 after which the outer bearing cone 18 and rollers 21 are assembled. To dismount the wheel the cone 18 and rollers 21 are disconnected whereupon the spindle 1 is withdrawn without removing the inner bearing 8, 9 and the cone 17 from the hub.
Patent GB-467482-A (GB)
Title: The manufacture of unsaturated diketones related to the corpus luteum hormone
Filed: 1935-09-12
Abstract: Pregnenone compounds of the general formula C21H30OX where X indicates = O, or <FORM:0467482/IV/1> or <FORM:0467482/IV/2> (OY being a group reconvertable into OH by hydrolysis) are prepared from a saturated compound of the pregnane series containing a keto group of the general formula C21H32OX where X has the above significance by a process which comprises the addition of halogen to form mono-halogen compounds followed by the elimination of hydrogen halide.  Compounds which may be used as starting materials comprise pregnandiones and pregnanolones.  The methods of halogenation and splitting off of halogen employed are those described in Houben-Weyl methods of Organic Chemistry, page 789. In examples: (1) bromine is added to a solution of pregnandione in chloroform, and the mono-halogen derivative so formed is boiled with pyridine to give pregnendione; (2) an acetic acid solution of pregnandione is treated with a few drops of hydrobromic acid and then an acetic acid solution of bromine is added.  The monohalogen compound is boiled with pyridine as in example (1) to give pregnendione; (3) a chloroform solution of chlorine is added to a chloroform solution of pregnanolone acetate, and the mono-chlor-pregnanolone boiled with quinoline to give pregnenolone acetate which is hydrolyzed with dilute alcoholic potassium hydroxide to pregnenolone.  Samples have been furnished under Sect. 2 (5) of (1) D 4 : 5-pregnenol-20-one-3 obtained by acting on pregnanol-20-one-3 with bromine and decomposing the monobromo-pregnanol-20-one-3 with pyridine; (2) D <1>-allo-pregnendione-3 : 20 obtained by brominating allo-pregnandione-3 : 20 in glacial acetic acid solution in the presence of a small amount of hydrobromic acid, and decomposing the monobromo-allo-pregnandione with potassium acetate; (3) D <4:5>-pregnendione-3 : 20 obtained by chlorinating pregnandione-3 : 20 in carbon tetrachloride solution and decomposing the monochlor-pregnandione with quinoline; (4) D <4:5>-pregnenol-20-one-3 obtained by brominating pregnanol-20-one-3-acetate in the presence of a small amount of hydrobromic acid and decomposing the monobromo-pregnanolone with pyridine followed by saponification with methyl alcoholic potash.  The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 464,397 together with the subject-matter of Specification 470,247, and also the following examples: (1) Pregnandione is chlorinated in carbon tetrachloride solution, the monochlor-pregnandione decomposed with potassium acetate or quinoline to give pregnendione; (2) allo-pregnanol-20-one-3 is brominated, oxidized with chromium trioxide, and hydrobromic acid removed to give allo-pregnendione; (3) the acetate of allo-pregnanol-20-one-3 is brominated, saponified with alcoholic potash, oxidized, and worked up as in the preceeding example to allopregnendione.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1465964-A (GB)
Title: Automatically activatable battery
IPC: H01M6/32
Filed: 1974-06-07
Abstract: 1465964 Reserve battery system VARTA BATTERIE AG 7 June 1974 [8 June 1973] 25461/74 Heading H1B In a gas-pressure operated, reserve type battery system, electrolyte is held in a compressible container 1. When it is required to prime the battery 15 a valve 13 is opened allowing gas under pressure in container 2 to close a slide valve 16 thereby shutting off the connection between line 19 and vent 17. At the same time slide valve 8 is operated to establish a connection between line 11 and vent 21. Also the pressure gas, throttled at 14 is applied to container 4 and transfer valve 15 is opened. Electrolyte is transferred to the battery through valve 15 and line 10 and displaced gas from the battery is vented through electrolyte trap 7, line 11 and vent 21. Upon exhaustion of the gas in container 2, valves 8 and 16 are returned by spring pressure to their original positions and gas generated by discharge of the battery is vented through trap 7, line 11, line 23, container 4 and vent 9. In a modification (Fig. 2, not shown) a single modified slide valve combines the functions of valves 8 and 16.
Patent GB-974986-A (GB)
Title: Polyurethane sponges
IPC: C08J9/00
Filed: 1962-07-03
Abstract: A process for preparing a sponge comprises mixing a hydroxylated polyether, an organic isocyanate having at least two isocyanate groups per molecule, water, a catalyst for promoting the reaction of the polisocyanate with the polyether and water, a surfactant to regulate foam formation and an additive to produce a wide variation in cell size, which additive consists essentially of (1) 1 to 20 parts by weight of a methylpolysiloxane having a viscosity of at least 350 cs. at 25 DEG C. and an average of at least 1.9 methyl groups per silicon and (2) 1 part by weight of a silica filler or a zinc oxide filler, the additive being used in amount of from 0.02 to 0.04 part per 100 parts by weight of the polyether. The polyether preferably has a M.W. of at least 500 and may contain copolymerized polyhydric alcohol.  Dibutyl tris diacetate or dilaurate, stannous octoate, triethylamine, tributylamine and triethylenediamine are suitable catalysts. Block copolymers of alkylene oxides and methylpolysiloxanes, in which the siloxane block and the alkylene oxide block may be joined either through silicon-carbon or silicon-oxygen-carbon linkages, are suitable surfactants. In examples (1) there are reacted polypropylene glycol glycerol (M.W. 3000), a surfactant C4H9O (C2H4O)45 (C3H6O)34 (Me2SiO)13-(OC3H6)6OH, water, dibutyl tin dilaurate, toluene diisocyanate, portions of the mixture containing variously; hydroxy-endblocked dimethyl polysiloxane liquid of 2,200 cs. viscosity and diatomaceous earth, zinc oxide or mixed diatomaceous earth, zinc oxide and zirconium silicate respectively; trimethylsiloxy-end blocked dimethyl-polysiloxane and zinc oxide, fume silica or silica aerogel; mixed trimethyl siloxy-end blocked dimethylsiloxane (350 cs.), polydimethylenesiloxane gum and silica aerogel, (2) reference is made to the use of five different surfactants in a similar process. Specification 974,766 is referred to.
Patent GB-319130-A (GB)
Title: Improvements in drills, reamers, milling cutters and like tools and sockets therefor
IPC: B23B31/113
Filed: 1928-09-05
Abstract: 319,130. Clare Collets, Ltd., and Clare, C. H. Sept. 5, 1928. Sockets. - In drills, reamers, milling-cutters and like tools having a tang-end for driving, the tang a is cut away at two opposed positions c, Fig. 1, so as to form shoulders e near the end of the tang. In operation, the tang is inserted in the usual slot g, Fig. 3, in the socket or collet f and is then given a part turn so as to engage the shoulders e over the top of the socket and prevent axial movement of the tool. The shoulders h on the tool shank engage the inner end of the socket. The socket may also be formed with a tang-end of similar construction for insertion in a larger socket. The faces c may be formed during the process of making the tool or they may be formed by milling, grinding &c. the flat surfaces d of the usual tang-end.
Patent GB-916308-A (GB)
Title: Variable-speed transmission
IPC: F16H47/08
Filed: 1959-03-26
Abstract: 916,308. Hydro-mechanical variable-speed gear. BORG-WARNER CORPORATION. March 26, 1959 [March 27, 1958], No. 25672/62. Divided out of 911,697. Class 80 (2). In a hydro-mechanical variable-speed gear for rear transverse mounting in a motor vehicle, a torque converter having an impeller 86 connected to an input propeller shaft 25 through bevels 39, 40, two turbines 87, 88, and a reactor 89 reacting on a one-way detent 47, is combined with two planetary sun-ring trains, one of which provides reverse, to drive an output wheel 55 which, together with the input propeller shaft 25, is located between the torque converter and the planetary trains. In Fig. 1, a first train 30 comprises a ring 61 connected to the first turbine 87, a carrier 63 connected to the output wheel 55, and a sungear 60 reacting through a one-way detent 57 friction braked at 58. A second train 31 comprises a sun 65 connected to the second turbine 88, a carrier 68 which may be friction braked at 69, and a ring 66 which is connected to the output wheel 55 through the carrier 63 and which may be friction clutched at 90 to the sun 65 for train 31 lock-up. For forward drive, brake 58 and clutch 90 are engaged, whereupon initially the turbine 87 drives the output wheel 55 at reduced speed through the train 30, until the turbine 88 becomes effective and drives the output wheel 55 directly through the locked-up train 31, the detent 57 releasing. For reverse, the brake 69 is engaged, whereupon the forwardly rotating turbine 88 drives the ring 66 and hence the output wheel 55 in reverse. In Fig. 3, the output wheel 55 is connected through a one-way clutch 104 and a friction clutch 103 to the first turbine 87. A first train 91 comprises a ring 94 connected to the output wheel 55, a carrier 96 connected to the second turbine 88, and a sun 93 which may be friction braked at 105. A second train 92 comprises a ring 98 also connected to the output-wheel 55, a carrier 100 which may be friction-braked at 106, and a sun 97 connected to the turbine 88 through the carrier 96. For forward drive, the clutch 103 and the brake 105 are engaged, whereupon initially the turbine 87 drives the output wheel 55 directly until the turbine 88 becomes effective and overdrives the ring 94 and hence the output wheel 55, the one-way clutch 104 releasing. For reverse, the brake 106 is engaged, whereupon the forwardly-rotating turbine 88 drives the ring 98 and hence the output-wheel 55 in reverse.
Patent GB-822569-A (GB)
Title: An improved arrangement for regulating the frequency of rotary convertors
IPC: H02P9/42
Filed: 1956-08-22
Abstract: 822,569. Automatic frequency-control systems. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Aug. 22, 1956 [Sept. 15, 1955], No. 25674/56. Class 38 (4). In an arrangement for controlling the frequency of a generator 3 driven from mains R,S, T, by a synchronous motor 1 through a differential gear 2, sun 23 of the differential gear is driven by the synchronous motor through a gearing 8, and a variable speed gear 7 which is controlled by a reversible servomotor 9 in accordance with frequency deviations detected by a frequency-sensitive relay 10. The drive to wheel 23 is arranged to be such that the wheel is stationary at the lowest permissible frequency. Alternative connections of the motor and generator to the differential gear may be used, and the variable-speed gear may be driven by a separate synchronous motor. Specification 754,077 is referred to.
Patent GB-1006614-A (GB)
Title: Propeller shroud-rings
Inventor: RUSSELL JOHN GILBERT
IPC: B64C11/00
Filed: 1962-07-04
Abstract: 1,006,614. Propeller shroud-rings. DOWTY ROTOL Ltd. July 3, 1963 [July 4, 1962], No. 25702/62. Headings B7G and B7V. A shroud-ring, for encircling a propeller with a running clearance, has a leading edge portion which either can be directed outwardly away from the axis of rotation of a propeller with which it is associated in order to provide a converging channel towards the propeller, or which can be directed so as to leave a channel of substantially constant diameter along its length. A shroud ring 11 surrounds an aircraft propeller 12, its inner surface being straight in section and its outer surface cambered with a leading edge portion 14 which is formed circumferentially in sections hinged at 15 to be moved by rods 17 to the position shown in full lines, thereby forming a convergent entry during take-off, climb and landing of an aircraft on which it is mounted. In a further embodiment the leading edge portion of the ring is provided with an annular inflatable element which normally conforms to the cambered, outer profile, but which may be inflated to form a convergent entry.
Patent GB-616107-A (GB)
Title: Reversing gearing
IPC: F16D13/66
Filed: 1946-08-28
Abstract: 616,107. Reversing gearing. HOFFMAN, W. Aug. 28, 1946, No. 25706. Convention date, April 11. [Class 80 (ii)] Reversing gearing comprises parallel driving and driven shafts 13, 10 connected by chain- and-sprocket gearing 11, 12, 14 and gear and pinion 15, 16, the selected gear or sprocket being clutched to the shaft 10 by a sliding sleeve keyed thereto and having spring-loaded ball detents to hold the cones 27, 28 engaged. The sleeve is moved by a lever 37 pivoted at 38 and having similar detents 45 co-operating with a block 41.
Patent GB-496708-A (GB)
Title: Improvements in or relating to milling cutters and like tools
IPC: B23D77/04
Filed: 1937-09-22
Abstract: 496,708. Milling-cutters. O.K. TOOL CO., Inc. Sept. 22, 1937, No. 25722. Convention date, Aug. 6. [Class 83 (iii)] An inserted blade milling &c. cutter has a body containing a recess in which are located a tapered blade and a locking wedge tapered in two directions so as to force the blade against a side wall and the base of the recess, the wedge being laterally adjustable in the recess to compensate for the reduced thickness of the blade as the latter is adjusted longitudinally in the recess. The cutter body 10 has a solid annular flange 12 for receiving the cutting blades 15 and a central recess 11 to provide clearance for cuttings. The blades are tapered about 2¢ longitudinally, the thinner ends being towards the centre, and are also tapered about 3 transversely, the thinner sides being towards the front. The slots 13 are similarly tapered and are arranged so that the cutting faces of the blades are inclined at 10 to radii of the cutter and at 15 to the axis. The blades are secured by wedges 17 of 7 longitudinal taper and 10 lateral taper inserted in grooves 18 adjacent the slots 13, the interengaging surfaces of the blades and wedges being plane. The blades are forced by the wedges against the bases 13a of the slots 13 which are inclined at about 15 to radii of the cutter so that movement of a blade along the slot will cause the two cutting-edges 15, 16 to be advanced by different amounts according to the respective amounts of wear. The bases 18a of the grooves 18 are perpendicular to the cutter axis so that they intersect the bases 13a of the slots 13 at an angle, the bases 13a being cut away at one end at 21, Fig. 3, to allow clearance for the wedges 17. The sides 20 of the grooves 18 are serrated parallel with the bases 18a to engage serrations on the wedges so that when the blades are adjusted outwardly to compensate for wear, the wedges may be stepped radially outwardly by one or more serrations in order that they shall not penetrate further into the grooves. The wedges thus remain flush with the outer periphery of the body 12 throughout their adjustment to prevent ingress of cuttings to the grooves, and remain in full contact with the blades adjacent the cutting edges. The solid flange 12 behind the slots 13 prevents flexure when the wedges are driven home. The serrations 20 preferably have a pitch of 34 to the inch and an included angle of about 90.