baber/WOPTO huggingface dataset:
Patent GB-626473-A (GB)
Title: Improvements in or relating to methods of making new substituted dihydroimidazolium compounds
IPC: C07D233/10
Filed: 1946-07-10
Abstract: Dihydroimidazolium compounds of the formula <FORM:0626473/IV (b)/1> in which R is an aliphatic hydrocarbon group of 7-18 carbon atoms, R1 and R2 are each aliphatic hydrocarbon groups of 1-7 carbon atoms, R and R1 total 10-25 carbon atoms, X is an anion, and n is an integer from 1-4, are made by treating a dihydroimidazole (or mixture of one or more such bodies) of the formula <FORM:0626473/IV (b)/2> in which Y is R or R2 with an alkylating agent having 1-7 carbon atoms when Y is R or 7-18 carbon atoms when Y is R2. The alkylating agent may be an alkyl nitrate, halide or sulphate, and R1 and R2 may be ethyl, isoamyl or allyl.  A solvent such as alcohol or ethyl acetate may be used.  The products are water-soluble and by the usual ionic reactions dihydroimidazolium chlorides, bromides, sulphates, acetates, phosphates and hydroxides may be prepared.  In examples, the following 4,5-dihydroimidazoles are reacted with methyl iodide (1) 1-n-decyl-2-methyl-, (2) 1-n-decyl-2-n-amyl-, (3) 1-n-dodecyl-2-methyl-, (4) 1-n-tetradecyl-2-methyl-, (5) 1-n-octadecyl-2-methyl.  The dialkylated dihydroimidazoles used as starting materials are obtained by heating an N-acyl ethylene diamine with lime to give the 2 - alkylated - 4,5 - dihydroimidazoles, which are further alkylated.
Patent GB-331692-A (GB)
Title: Improvements in or relating to grinding or abrading machines
IPC: B24B7/08
Filed: 1929-07-05
Abstract: 331,692. Snow, R. G. July 5, 1929. Disc apparatus; guides and rests; tables; wheels.-A grinding-machine consists of a grinding-wheel 9, having an annular operating surface 8, mounted on the upper end of the spindle 10 of an electric motor 5, which is slidable vertically in a frame 3 to adjust the surface 8 in relation to an annular work support 14 mounted on the frame 3. An inner support 15 also is provided, supported, flush with the support 14, within the wheel 9, by a bridge piece 16, which also is secured to the support 14. The piece 16 has a trued face 17 acting as a guide for the work and forming a chord across the wheel 9 of less length than the diameter; a. second bridge piece also may be provided. The wheel 9 has a flange 13 and is clamped on a plate 11 on the spindle 10 by a ring 12. The motor carries a screw 18 engaging a nut 19 rotatable in a web 20, through bevel and chain gearing 21, 22, 25, by a hand wheel 24, and in order to lock the motor in its adjusted position, the frame 3 has two slots 27. 28 forming tongues 29, which have lugs on their ends to receive a clamping bolt. A casing 33 is fitted and is connected to a dust exhausting apparatus, ports 36 being provided above the piece 16, and grooves 35 being formed in the lower surface of the piece 16. In a modification, the motor 5 may be fixed, the spindle having an adjustable extension.
Patent GB-136264-A (GB)
Title: Improvements in or relating to Machines for Trimming Insoles.
IPC: A43D27/00
Filed: 1918-12-11
Abstract: 136,264. British United Shoe Machinery Co., (United Shoe Machinery Corporation). Dec.11, 1918. Trimming.-Comprises improvements in the type of insole-trimming machine described in Specification 24561/10. To prevent the rotary cutter from leaving a gap 108, Fig. 3, near the heel breast portion of an insole, a gauge or guide 10, Fig. 4, with an edge 110 flatter than the cutter, is provided with fulcra 112, 114 about which a last carrying an insole can be turned so as gradually to withdraw the insole from the cutter.
Patent GB-280146-A (GB)
Title: Electric lamps
IPC: H01K1/28
Filed: 1927-08-05
Abstract: 280,146. Cameron, W. J. Aug. 5, 1927. Bulbs.-A miniature bulb for attachment to surgical instruments to illuminate surfaces for inspection &c. is formed of glass tubes 12, 14 arranged transversely to each other and enclosing a filament 11 and its leads, and a lens 15 fused to the end of the tube 14. A cap 15 applied to the tube 12 is either of the bayonet type, as shown, or of screw type, for ininsertion into a socket in the instrument. An opaque coating is applied to the tubes so that light is emitted only through the lens. The coating may be formed by first spraying on zinc and then painting the xino coating.
Patent GB-673603-A (GB)
Title: Improvement in stake-type fastener and method of making same
IPC: F16B37/06
Filed: 1950-08-22
Abstract: 673,603. Making anchor nuts; jointing by forging. RADIO CORPORATION OF AMERICA. Aug. 22, 1950 [Aug. 30, 1949], No. 20762/50. Classes 83 (ii) and 83 (iv). [Also in Group XXV] The nut portion of a built-up anchor nut is produced on a turret lathe or screw machine by turning a spigot 4 on the end of the bar, knurling to produce corrugations 7, drilling axially, tapping, turning a recess with conical wall 8a, and parting off. The conical wall 8a in conjunction with the corrugations 7 form a circular series of sharp-edged projections that are forced in a press into a member 6 of softer material. During this jointing the conical surface causes the projections to curl outwardly. The method of jointing is applicable generally to the connection of boss-like members to supports to panels, chassis, or other bases.
Patent GB-717798-A (GB)
Title: Suction boxes of paper machines
IPC: D21F1/52
Filed: 1952-08-19
Abstract: 717,798. Suction boxes of paper-making machines. PLANER, K. Aug. 19, 1952 [Sept. 6, 1951], No. 20784/52. Class 96. A stave 3 for the mouth of a suction box 7 of a papermaking machine, is of wood, metal, or plastic, and has a covering 1 of flexible rubber, leather, or plastic, over the top and optionally extending down the sides etc.; the covering 1 being firmly secured to the stave and forming a closure for a longitudinal channel, &c., 4 in the stave, or alternatively such a channel &c., may be formed in the covering. Compressed air or water is supplied to the channel 4 so that the covering is pressed upwardly to make close contact with the travelling wire-cloth of the machine. The staves may be screwed at 5 to ledges 6 at the mouth of the box 7.
Patent GB-296535-A (GB)
Title: Rat guard
IPC: B63B21/12
Filed: 1927-08-08
Abstract: 296,535. Mead, W. A. Aug. 8, 1927. Gvards for preventing access of vermin.-A rat guard for a hawser is formed by two metal plates 1, 2, connected by pivot and guide members 4 and shaped so as to form a circle when in operative position. Recessed parts 1<a>, 2<a>, are formed in the plates to take the hawser and slots 1<b>, 2<b>, to accommodate the guide member 4. The pivot and guide members are each formed by a rivet passing through a sleeve 5 on which spacing washers 7 are provided between and outside of the plates 1, 2. A bridle, 3 secured to the plates enables the guard to be lowered on to a hawser, the plates closing on each other when the tension of the bridle is relaxed. The pivot member is preferably made of material such as copper, bronze, or the like and the guide member of aluminium.
Patent GB-841221-A (GB)
Title: Roller device for the application of lip cosmetic and the like
IPC: A45D34/04
Filed: 1957-07-02
Abstract: 841,221. Paste applicators. BAY, J. L. Sept. 30, 1958 [July 2, 1957], No. 20870/57. Class 81(2) [Also in Groups XVII and XXIII] A lipstick applicator comprises a concave roller 10 rotatably mounted in one end of a casing 11, a spring- loaded plunger 16 which presses a cosmetic stick 15 or a pad impregnated with cosmetic into contact with the roller, and an adjustable end cap 18 to compensate for wear of the cosmetic stick or pad. The roller is mounted on centres 14 provided on two flat sides 13 of the casing, the other two sides being shaped to the contour of the roller. The cap 18 is adjusted by the engagement of projections 19 with recesses in the wall of the casing 11.
Patent GB-825189-A (GB)
Title: Removable diaphragm frame for foundry moulding machines
IPC: B22C15/12
Filed: 1957-07-02
Abstract: 825,189. Moulding-machines. LACCONE, R. W. July 2, 1957, No. 20919/57. Class 83 (1). In a diaphragm-type moulding- machine, the diaphragm 7 is secured to a frame 10 which is removably supported in the machine head 3 by flanges 70 engaging on rollers 61 so that the diaphragm unit may be easily withdrawn for replacement purposes. In the operation position, the frame is clamped into sealing engagement with the head by bolts 160, there being a packing 52 between the head and the frame. The mould box 20 and pattern 28 are mounted on a support 2 movable on a runway 15, and when moved under the diaphragm for moulding, are positioned by a stop 23. Reference has been directed by the Comptroller to Specification 750,979.
Patent GB-123045-A (GB)
Title: Thread Measuring Mechanism for Sewing Machines.
Inventor: FAIRWEATHER WALLACE
IPC: D05B51/00
Filed: 1917-12-31
Abstract: 123,045. Fairweather, W., (Singer Manu facturing Co.). Dec. 3L, 1917. Multiple-needle machines; governing needle thread.-A thread-measuring device for sewing- machines, and described as applied to a multipleneedle sewing-machine as disclosed in Specification 122,863, comprises a thread-guide 143, secured to the top of the needle-bar 21, and a thread stop 197 carried by a lever 192 pivoted on a fixed bracket 190 and having an adjustable connexion with a work-engaging element such as the presser-bar 83. This connexion consists of a bracket 196 with a slot 195 in which is adjustably secured a pin 194 entering a slot 193 in the end of the lever 190.
Patent GB-435947-A (GB)
Title: Improvements in lenses
IPC: G02B13/18
Filed: 1934-07-18
Abstract: 435,947. Lenses. LEE, H. W., and KAPELLA, Ltd., 104, Sloughton Street, Leicester. July 18, 1934, No. 20992. [Class 97 (i)] Relates to lenses corrected for field curvature comprising a single compound dispersive meniscus member between two collective members of which that on the longer conjugate side is of meniscus form. According to the invention, in order to provide such a lens of large aperture with improved correction for zonal spherical aberration and coma, one or more of the exterior surfaces is made of conicoidal form. Such a surface may be wholly conicoidal but preferably the central portion is spherical and the outer portion has the form of a conicoid osculating the sphere at a given zone, the width of the conicoidal part being not less than one-tenth of the aperture of the surface. The surface so formed is preferably that glassto-air surface at which the diameter of an axial parallel beam of incident light within the aperture of the system attains its minimum value. In the form shown this surface is the concave surface of the dispersive member. The front collective member may be a single meniscus or, as shown, may consist of a number of meniscus components. Data are given. Specification 419,552 is referred to.
Patent GB-822988-A (GB)
Title: Oil return arrangement in sewing machines
IPC: B01J23/90
Filed: 1957-07-03
Abstract: 822,988. Sewing machines. INDUSTRIEWERKE KARLSRUHE A. G. July 3, 1957 [Aug. 2, 1956], No. 21004/57. Class 112 [Also in Group XXXIV] An arrangement for returning oil which issues from the machine head at the outer end of the presser foot bar bearing in a sewing machine comprises an elastic bellows 8 which forms an oil-tight seal between the lower end of the bearing bush 4 and the lower end of the presser foot bar 3. When the presser foot bar 3 is moved upwardly, oil which has filled the interior of the bellows 8 is delivered upwardly through a groove 9 formed in the bush 4. The bellows 8 may be made of oil-resistant rubber.
Patent GB-908325-A (GB)
Title: Improvements in or relating to furniture leg fittings
Inventor: SPICER JOHN HENRY
IPC: A47B91/06
Filed: 1961-06-12
Abstract: 908,325. Furniture leg fittings. ROBIN COMPONENTS Ltd. June 12, 1961, No. 21108/61. Class 134. A furniture leg fitting comprises a floor-engaging portion 1 and a leg-engaging portion 2 coupled together to allow one portion to tilt in any direction with respect to the other portion but not allowing relative rotation between the two portions. As shown, portion 1 is formed with an annular recess 4 having a rectangular or square outer periphery, portion 2 also being of substantially rectangular or square cross section and engaging in a tubular furniture leg of similar cross-section. The fitting may be moulded from a synthetic plastic material such as nylon, and may have a metal glide partially housed in its lower surface.
Patent GB-578543-A (GB)
Title: Improvements relating to gas-heated water boilers
IPC: F24H1/18
Filed: 1944-10-30
Abstract: 578,543. Gas-heated water boilers. RADIATION, Ltd., and WASS, N. H. Oct. 30, 1944, No. 21139. [Class 64 (i)] A gas-heated water boiler comprises a cylindrical water receptacle a with a narrow external flange b at or near its lower end, a cylindrical skirt c having at its upper end an internal flange d abutting on the upper side of the flange b, either directly or through an intermediate sealing washer which may be of asbestos, and legs f secured to the inner side of the skirt and abutting at their upper ends against the underside of the receptacle a or its flange b, the burner g being accommodated within the skirt which has at one side a combustion-products outlet k. A tray h with a central hole i is arranged below the burner to catch condensation water.
Patent GB-138279-A (GB)
Title: Improved connecting link for mooring and the like
IPC: F16G15/04
Filed: 1919-08-28
Abstract: 138,279. Norman, C. Aug. 28, 1919. Shackles. - A connecting-device especially adapted for use as a mooring-link and for fastening sails &c. comprises an endless link 1 doubled up to enable it to be threaded through a closed ring or thimble 3, the folded-up parts being separated by a space of just sufficient width to form a guide for the turned-over ends of an open link 2. These ends may be provided with crossheads 4 which prevent the separation of the parts until the link 2 is turned through an angle, as shown in dotted lines in Fig. 2. A stay may be inserted centrally between the folded-up parts of the link 1.
Patent GB-994573-A (GB)
Title: Novel betalyxopyranosyl halides and a process for their preparation
IPC: C07H17/07
Filed: 1961-11-07
Abstract: The invention comprises 5,5-dialkyl-4-(O-alkyl - 2,3 - cyclocarbonato - L - beta - lyxopyranosyl halides and the preparation thereof by halogenating an alkyl 5,5-dialkyl-4-(O-alkyl)-2,3 - cyclocarbonato - L - beta - eyxoypyranoside. The halogenation may be carried out by the action of hydrogen chloride in nitromethane, preferably in the presence of acetyl chloride at 0 DEG  C., or of dichloro-methyl methyl ether in the presence of a catalytic amount of a Lewis Acid, e.g. zinc chloride.
Patent GB-1358236-A (GB)
Title: Digital frequency synthesizer
IPC: H03K3/80
Filed: 1972-05-08
Abstract: 1358236 Digital frequency synthesis ROCKLAND SYSTEMS CORP 8 May 1972 [29 Oct 1971] 21320/72 Heading G4H In a digital frequency synthesizer wherein a read-only memory 11 stores samples of the required output signal (which samples are sequentially fed to a D/A converter 16 to generate a step signal which is smoothed by a filter 17 to form, e.g. a sine wave of the desired frequency), advantage is taken of the sine-wave symmetry to modify the memory addresses MSB, D generated by input equipment 1-5 and/or the memory outputs according as each sample is to occur in the 2nd, 3rd or 4th quadrant, so that memory 11 need store samples for the 1st quadrant only. The sine wave symmetry also allows the use of an 8-bit word memory (O 1 -O 8 ) together with a logic circuit 14 to provide 10-bit sampled valves 0 1 -O 10 . The desired frequency is set on switches 1a-1d and fed by decoder circuits to Modulo- 1000 accumulators 2-4 and a modulo-8 accumulator 5, where it is repeatedly added in under the influence of an 8 MHz clock 10. Accumulator 5 (Fig. 3, not shown) uses a 3-bit adder (20) and a 3-bit register (21) to generate SGN (sample in 3rd ar 4th quadrant), QUAD (sample in 2nd or 4th quadrant) and MSB (of the memory address) signals; accumulator 2 (Fig. 5, not shown) uses a 7-bit adder (to add 24 since a 10-bit binary accumulator would otherwise operate modulo 1024), a 10-bit adder (31) and a 10-bit register (32) to produce an address signal D. For 1st quadrant samples, MSB, D address memory 11 directly; for 2nd or 4th quadrant samples, QUAD signal modifies MSB (gate 12) and D (999's complementing, Fig. 6, not shown) to generate the corresponding 1st-quadrant address MSB<SP>1</SP>, E. The sample is formed by memory 11 (O 1 -O 8 ) together with circuit 14 which combines MSB<SP>1</SP>, E 7 -E 9  and O 8  in NAND-gates 50-58, Fig. 8 (not shown), to generate O 9 , O 10 , signal O 1 -O 10  then being fed to register 13. 1st or 2nd quadrant samples are fed unmodified to D/A 16; 3rd or 4th quadrant samples are 1<SP>1</SP> 5 -complemented in 15 by signal SGN (if the samples are "truncated" values; if they are "rounded-off" values, then O 1 -O 10  is 2<SP>2</SP> 5 - complemented). The final signal C 1 -C 10  is again fed to the D/A converter 16, which is of known type and includes means for 2<SP>1</SP> 5 -complementing
Patent GB-295511-A (GB)
Title: Improvements relating to turkish or terry towels
IPC: D03D27/08
Filed: 1927-08-13
Abstract: 295,511. Stott & Smith, Ltd., and Southern, H. L. Aug. 13, 1927. Cloaks and body coverings; wearing-apparel for bathing purposes.-Turkish towels and towelling are woven with tubular parts t, and terry portions p. Cords or tapes &c. are inserted in the tubes, about which a towel can be folded to form a collar p<1> bunched about the neck of the wearer so that the towel can be used as a wrap. Two such collars can be woven with different figuring, a cord being inserted in either of the two tubular portions, so that the wrap can be reversed to give a different decorative effect. The ends of the tubular parts may be strengthened by extra picks of strong weft or by attached pieces. The tubular parts may extend parallel to the weft, or, as shown in Fig. 1, parallel to the warp.
Patent GB-1428522-A (GB)
Title: Water-soluble heavy metal complex azo dyestuffs and process for  their preparation
IPC: C09B62/515
Filed: 1973-05-04
Abstract: 1428522 Water-soluble azo metal complex dyes HOECHST AG 4 May 1973 [5 May 1972] 21354/73 Heading C4P Compounds have the general formula wherein R is H or unsubstituted or substituted alkyl or cycloalkyl, each of A, E and G which may be identical or different, represents an unsubstituted or substituted benzene, naphthalene or aromatic heterocyclic nucleus, D represents an unsubstituted or substituted benzene or naphthalene nucleus or an aliphatic or cycloaliphatic radical, R 1  is OH, alkoxy, amino, N-alkylamino, N,N-dialkylamino or N-aryl, Z is a reactive group, Y is -O-, -S-, -CO-, -SO 2 -, -CH=CH-, -CONH-, -N=N-, -CH 2 -, -NH-, -NHCONH-, -NHCO- or -NHSO 2 -, X is -O- or -COO-, M represents a heavy metal atom of atomic number 24 to 30, each of a, b, n, v, w and q, which may be identical or different, represents 0 or 1 and each of m and p which may be identical or different, represents 1 or 2. The radicals A, D, E and G may be substituted by halogen, sulpho, sulphamoyl, N-alkylsulphamoyl, N,N-dialkyl-sulphamoyl, N,N- aralkyl sulphamoyl, carboxy, carbamoyl, -CONH(alkyl), -CON(alkyl) 2 , -COOalkyl, -COOaryl, alkyl-sulphonyl, -NH 2 , -NH alkyl, aralkylamino, acylamino, nitro, -CN, -OH, -CF 3 , lakoxy and/or alkyl groups. Copper or chromium complexes are exemplified, such as the compounds Examples of the reactive group Z include -SO 2 CH 2 CH 2 R<SP>1</SP> where R<SP>1</SP> is hydroxy or a radical which can be split off under alkaline conditions, -SO 2 -CH = CH 2 , or a mono- or dichlorotriazinyl, dichloropyridazinoyl or dichloroquinoxalinoyl group. The dyestuffs may be used to dye or print leather or a fibrous material consisting of or made from natural or regenerated cellulose or a regenerated protein, wool, silk, synthetic polyamide, polyurethane or leather, giving red, red-brown or violet shades.
Patent GB-436811-A (GB)
Title: Improvements in and relating to control apparatus for electric discharge devices
IPC: H01J17/04
Filed: 1934-07-23
Abstract: 436,811. Switching-systems for consuming devices; valve circuits. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. July 23, 1934, No. 21507. Convention date, July 26, 1933. [Class 38 (iv)] [See also Group XL] In a system in which a load is switched on by operation of a relay 10 controlled by a grid controlled arc rectfier 7 whose anode circuit is supplied with A.C. in phase opposition to control A.C. applied to the grid thereof, control of the rectifier 7 is effected by a superposed pulsating voltage obtained from across a reactance 31 in the circuit of a grid controlled thermionic valve which is supplied with A.C. and controlled by a variable impedance 35, so that on the occurrence of a predetermined decrease in the value of the impedance 35 the arc rectifier 7 is rendered conductive. Means such as a reversing switch 14 and a phase splitting circuit 20, 21 are provided to alter the phase of the control A.C. voltage applied to the grid of the rectifier 7 relatively to the anode voltage and the polarity of the pulsating control voltage so that the valve 7 may operate on a predetermined increase or decrease in the value of the impedance 35. The variable impedance 35 may be a light-sensitive cell and the relay 10 thus operates either on a predetermined increase or a predetermined decrease in the illumination on the cell 35, according to the position of the switch 14 which causes a 90 phase shift of the A.C. control voltage and a reversal of the variable pulsating control voltage applied to the grid of the rectifier 7. Specifications 319,286, [Class 39 (i)], 357,572, [Group XL], and 403,987 are referred to.
Patent GB-1130834-A (GB)
Title: Improvements in and relating to coupling shafts
Inventor: VISSERS HERBERT
IPC: F16D3/84
Filed: 1967-05-09
Abstract: 1,130,834. Machining guards. LANDBOUWERKTUIGEN EN MACHINEFABRIEK H. VISSERS, N.V. 9 May, 1967 [14 July, 1966; 20 Feb., 1967], No. 21514/67. Heading F2J. A non-rotary guard for a universally-joined shaft 5 of an agricultural machine comprises a sleeve 10 extending into an axial recess in a funnel-shaped attachment 8 supported on the shaft by a sleeve 1 having a ridge 2 extending into a groove 7 on the universal joint yoke 6 and formed with slots 3 to allow for radial expansion for mounting, a clamping ring 11 being applied to hold the whole assembled. The ring 11 may comprise a metal strip tightened by a clamping screw, or, Fig. 2, (not shown), an un-interrupted ring may be applied and then crimped by upper and lower reciprocating dies to form two projections, one of which is used to apply a chain to hold the sleeve 10 and attachment 8 against rotation. Again, the upper die may be hinged on the lower die so that only one projection is formed. The sleeves 1 and 10 and attachment 8 may be formed from a synthetic resin, e.g. nylon.
Patent GB-205925-A (GB)
Title: Improvements in and relating to photographic printing frames
IPC: G03B27/02
Filed: 1922-08-08
Abstract: 205,925. Hubbard, W. G. Aug. 8, 1922. Contact printing-frames; printing-apparatus with bordering masks.-A printing- frame has portions A cut away at each inside corner so as to allow the corner of the negative and the corner of the printing-frame to show from the face of the frame, and a mask B is fitted within the aperture of the frame so that in printing, the outer edges of the corners of the mask will be printed on the paper and will thus serve as guides for trimming so as to produce an even white border.