baber/WOPTO huggingface dataset:
Patent GB-541328-A (GB)
Title: Improvements relating to the use of substituted aromatic diamines in photography
IPC: G03C7/413
Filed: 1940-02-19
Abstract: 541,328. Aromatic nitrogen derivatives. KODAK, Ltd. (Eastman Kodak, Co.). Feb. 19, 1940, No. 3112. [Class 2 (iii)] [Also in Group XX] N-Ethyl N-acetonylaniline is prepared by reacting N-ethylaniline and chloroacetone in the presence of sodium bicarbonate. N-Ethyl N-acetonyl-p-phenylenediamine is prepared by the reduction of a methyl alcohol solution of 4 (2<SP>1</SP>-chlorobenzeneazo)-N-ethyl: N- acetonylaniline (obtained by coupling diazotized o-chloraniline with N-ethyl N-acetonylaniline) by the addition of sodium thereto, the ochloroaniline being removed by steam-distillation. The corresponding m-methyl-N-ethyl compound is prepared by reduction of the corresponding p-nitro compound by hydrogen in the presence of nickel. The corresponding m-methyl-p-amino-m-methylphenyl- N -methylaminomethylethylketone is similarly prepared. p- Nitrophenyl-N-ethyl-glycineamide is prepared by nitrating N-ethyl-phenylglycineamide below 45‹C. Reduction by hydrogen in the presence of nickel gives p-aminophenyl-N- ethyl-glycineamide. The compounds p-amino-mmethylphenyl-N-#-hydroxyethylglycineamide, paminophenyl- N-methyl-glycineamide, and pamino-m-methylphenyl- N - methoxyethyl - glycineamide are similarly prepared. The compounds 2-amino-4-hydroxy-1-cyclohexyl - (# - propion - #- hydroxethyl-amide)-amino-naphthalene and N- tetrahydrofurfurylamino - 2 - hydroxy - 4 - aminophenylglycinehydrazide are similarly prepared. Methyl p-aminophenyl-N-ethyl-aminoacetate is prepared by the reduction of the corresponding p-(o-chlorobenzeneazo) compound. 2-Amino- 4-hydroxy 1 - cyclohexyl- (#-propion- #-hydroxy ethylamide)- (amino)-naphthalene is prepared by heating 4-hydroxy-2-nitro-1-naphthylamine with cyclohexyl bromide in benzene in the presence of sodium bicarbonate, heating the product with acrylonitrile in toluene, forming the methyl ester by heating with methyl alcohol and sulphuric acid, forming the amide by re-action with ethanolamine, and reducing by hydrogenation in the presence of nickel. N - Tetrahydrofurfurylamino - 2 - hydroxy - 4 - aminophenylglycinehydrazide is prepared by re-acting 3-nitro-6-chlorophenol with -tetrahydrofurfurylamine, reducing by hydrogenation in the presence of nickel, forming an ester by re-action with methylchloracetate, and reacting with hydrazine hydrate. Methyl paminophenyl- N-ethyl-aminoacetate is prepated by the reduction of the corresponding p-(ochlorobenzeneazo) compound, in ethyl alcohol solution by hydrogenation in' the presence of nickel, the two amines produced being separated by fractional distillation under reduced pressure. The p-(o-chlorobenzeneazo) compound is prepared by re-acting N-ethyl-aniline and methylchloracetate in the presence of sodium bicarbonate and then coupling with diazotized o-chloraniline. Amino-m-methylphenyl - N - ethylglycineamide is prepared by reacting m-toluidine and chloracetamide in the presence of sodium carbonate, N-ethylating with diethylsulphate, and either diazotizing or coupling with diazotized sulphanilic acid, followed by reduction.
Patent GB-715320-A (GB)
Title: Improvements relating to mine props and mine arch supports
IPC: E21D11/18
Filed: 1951-02-08
Abstract: 715,320. Mine arch supports and props. MURMANN, W. Feb. 8, 1951 [Feb. 8, 1950], No. 3112/51. Class 20 (2) Two parts, e.g. I or rail-sections, of a mine arch support or pit prop are secured together by clamps to yield under excess load and an elongated shearing member is interposed between the two parts, the arrangement being such that on relative movement of the parts towards each other, the shearing member is stressed in tension and is sheared by the clamps. As shown in Figs 1, 3 the arch support comprises arch members connected by links 1 and each formed of two rail-section parts 2, 3 connected at their overlapping ends by clamps 9, 10 each clamp being bolted to one of the rail parts and frictionally engaging the other. Between the overlapping ends of the parts 2, 3 there is arranged an e!ongated sheet metal shearing member 4 having a relatively narrow middle part 5, Fig. 6, and widened ends 6, the clamps 9, 10 being located in the region of the narrow part 5. On movement towards each other of the parts 2, 3, shearing edges provided on the clamps 9, 10 shear off the projecting edges of the parts 6 of the shearing member 4 whilst the middle part 5 is stressed in tension. Shearing need not take place at both ends of the shearing member 4. For example the shearing member may be of T-shape, the broader portion being sheared by the shearing edge of the clamp 10 whilst the narrow end is secured to the part 2 in the vicinity of the clamp 9, which would have no shearing edge. In a modification, Fig. 5 (not shown), a similar arrangement is applied to a pit prop.
Patent GB-825748-A (GB)
Title: Electrical apparatus adapted to serve both a voltage stabiliser and as a signal amplifier
IPC: G05B11/01
Filed: 1956-01-31
Abstract: 825,748. Automatic voltage control systems. TUNNICLIFFE, E. A. J., and WILKINS, S. R. Jan. 31, 1956, No. 3132/56. Class 38 (4). [Also in Group XL (c)] A push-pull amplifier having a stabilized power supply comprises two pairs of valves V 1 , V 2  and V 1 a, V 2 a arranged so that the valves V 1 , V 1 a supply a stabilized H.T. potential from their cathodes to the point P by virtue of negative feed-back through the valves V 2 , V 2 a having a stabilizing gas-discharge tube E r  connected in their common cathode circuit, the signal E s  to be amplified being applied in pushpull to the grids of the valves V 2 , V 2 a so that the potentials at the cathodes of the valves V 1 , V 1 a vary equally and oppositely to develop an output signal across the load resistors R L , R L a. The potential at the point P is affected by only the unbalance component of the potential variations at the cathodes of the valves V 1 , V 1 a, these variations consequently being fed back to the grids of V 2 , V 2 a to suppress the unbalance component in the output signal. Thus the potential at P remains stabilized and may be used to supply other circuit needs such as pre-amplifier valves. As shown, the junction of resistors RL, RLa is connected directly to H.T. - ; instead the junction, which is necessarily a point of stabilized potential, may be connected to H.T. - through the heaters of the preceding valves, Fig. 3b (not shown), so providing stabilized heater currents. In the modification of Fig. 4 (not shown) the resistors R r , R r a are replaced by pentode valves energized in push-pull from the signal source so providing additional amplification for the signal E s . Gain control may be effected by connecting a variable resistor VR 1  between the anodes of the valves V 2 , V 2 a (or in Fig. 4, between the anodes of the pentode valves). Resistors R 4 , R 4 a may be replaced by potentiometers as indicated in broken lines, with their sliders connected to the resistors R 5 , R 5 a, so permitting accurate balancing of the two halves of the circuit. If alternating-current amplification alone is required, the resistors R L , R La  may be replaced by a centre-tapped transformer while for measurement purposes a rectifier bridge may be connected between the cathodes of the valves V 1 , V 1 a.
Patent GB-326622-A (GB)
Title: Drawer controlling means for coin-freed machines
IPC: G07F11/18
Filed: 1929-01-30
Abstract: 326,622. Harper, P. S. Jan. 30, 1929. Delivery of articles stored in piles.-The delivery drawer 1 is provided with a full stroke mechanism comprising a rack 4 on the drawer with which the teeth 7, 8 of a double toothed pawl 6 engage to ensure complete movement of the drawer in both directions, a finger 10 on the pawl being engaged by pins 13, 14 on the drawer at each limit of its travel to throw the pawl teeth alternately into engagement with the rack. The pawl is pivoted on a bracket 5 of the framework and has a depending cranked arm 11 engaged by a tension spring 12 which holds the pawl teeth in engagement with the rack.
Patent GB-215090-A (GB)
Title: Improvements in and connected with escapement mechanism for typewriting machines
IPC: B41J19/18
Filed: 1923-02-02
Abstract: 215,090. Harrington, F. C. A., and Harrington Standardized Typewriter Co., Ltd. Feb. 2, 1923. Letter-spacing mechanism; space-key actions.-In escapement mechanism of the kind comprising a reciprocating bar provided with fast and rocking dogs co-operating with an escapement wheel, the rocking dog is of L or like shape and lies in a groove in the bar, the end of the dog engaging a stationary spring. A cylindrical bar a, supported in bearings b, is formed with a gap c for the escapement wheel d, and is provided with a fast dog h, and an L-shaped loose dog i which lies in a groove k, the end i' of the dog engaging a stationary spring l. The escapement wheel is secured to a shaft e depending from the feedpinion g. The bar a may be attached to a curved universal-bar q arranged in the path of lugs s<1> on type-levers s. The space-key lever may be connected to a lever o which engage the bar a, and is connected to a returning-spring.
Patent GB-264335-A (GB)
Title: Improvements in or relating to fastening devices for jewellery, watches and the like
IPC: A44C5/20
Filed: 1926-02-03
Abstract: 264,335. Friez, E. N. Feb. 3, 1926. Hooks, spring.-A fastening device for jewellery &c. comprises two or more snap-hooks attached to a central body 1, each hook having a rigid member 2 and a movable member 4 held in the closed position by a single spring 8 common to all the hooks and housed in the central body.
Patent GB-1461212-A (GB)
Title: Retaining device for electric cable
IPC: F16L3/14
Filed: 1975-01-24
Abstract: 1461212 Cable grips MANUFACTURE D'APPAREILLAGE ELECTRIQUE DE CAMORS 24 Jan 1975 [5 Feb 1974] 3286/75 Heading E2A A cable support which normally allows longitudinal sliding of the cable but which grips it if excessive movement takes place, comprises an outer body 101 having substantially aligned passages 111, 112 for the cable, and a rotatable cylindrical core 107 incorporating the support hook 102 and having a passage 113 which is normally aligned with those of the body, Fig. 1, but which can turn to a misaligned position, Fig. 5, to kink the cable to retain it against tension F when the cable breaks at 118. A slight modification is described.
Patent GB-113348-A (GB)
Title: Improvements in and relating to Tobacco-pipes.
Inventor: JONES CHARLES EVAN
IPC: A24F1/08
Filed: 1917-03-08
Abstract: 113,348. Jones, C. E., and James, T. March 8, 1917. Tobacco pipes.-The mouthpiece is made with inclined bores i, j and a collecting trough e, perforated at g to allow the nicotine and moisture to escape into a well h in the stem f.
Patent GB-396748-A (GB)
Title: Improvements in and relating to apparatus for grading materials into different sizes
IPC: B07B1/08
Filed: 1932-02-05
Abstract: 396,748. Sifting-apparatus. COOK, J. A., 101, Bayswater Road, West Jesmond, Newcastle-on-Tyne. Feb. 5, 1932, No. 3488. [Class 117.] In coal &c. screening and grading apparatus of the type comprising a series of superposed rotary screening discs, the materials under treatment are fed to the upper disc at one point and the graded product deflected into a shoot or shoots while the ungraded products are collected and fed in a single stream by gravity to the next screen in the series. In one arrangement described, a series of superposed rotary screen discs 1, Fig. 2, are mounted on a driven shaft 5, and each is surrounded by a stationary wall 9 opening into a discharge shoot 15 into which the graded product remaining on the screen is directed by stationary sweeps 8, 14. The materials are fed on to the screen behind the sweep 8 and are spread over the surface of the screen by stationary baffle plates 10, 11, 13. The ungraded product passing through the screen is received on a stationary collecting plate and swept by a rotary wiper through an opening therein on to the next screen. In another arrangement, shown in Figs. 3 and 6, the stationary sweeps may be utilized to grade the product left on the screening disc into two or more sizes. One form of this arrangement comprises a rotary screening disc 22 carried by the shaft 21 to which the materials are fed by a shoot. The under-sized product passing through the screen is caught on a rotary plate 27 and discharged by stationary wipers through a shoot 28. Stationary plates are carried by the cover-plate 23 and act to spread the materials and discharge the ungraded over-size product to a second screen 26 carried by the shaft. The " throughs " from this screen are discharged into the shoot 46 by a rotary collecting disc 45 and stationary wipers. Over the screen 26 are disposed stationary sweeps 33, 31, 31b, Fig. 6, leading to the three discharge openings 32, 35, 34. At various points, these sweeps are spaced from the surface of the discs at graded and adjustable heights as shown at 29, 29a, 29b, so that in the rotation of the screen the smaller sizes are delivered at the openings 32, 34 and the larger sizes at the opening 35. The former are passed by a shoot 36 to a discharge plate 37, and the latter pass by the shoot 39 to a further screen 40 placed above the plate 37 and co-acting with a stationary sweep to discharge the over-size product into the shoot 44.
Patent GB-195353-A (GB)
Title: Improvements relating to universal joints
IPC: F16D3/34
Filed: 1923-02-06
Abstract: 195,353. Ram, G. H. E. de. March 23, 1922, [Convention date]. Universal joints.-Concentric spherical members are connected by a torque-transmitting member comprising a number of arms jointed about a common centre and constrained to move in a common plane, which coincides with the plane perpendicular to that containing the shafts and bisecting the angle between them, so that the driven shaft rotates uniformly. The torquetransmitting member is constituted by three pins 7 articulated at their mid-points on a common pivot 8 to form a six-armed spider, which engages six slots b, c lying on great circles of the spherical shells A<1>, B<1> respectively. The extremities of the arms may carry sliding thimbles and the parts in contact with the slots c may be provided with flat pieces to increase the contact surface. In a modification, the parts A<1>, B<1> are of equal diameter and comprise each three claws alternately disposed, the interposed ends of the spider arms being provided with conical or other rollers. The parts are preferably held together by a divided spherical sheath.
Patent GB-175519-A (GB)
Title: Improved means for preventing rattling of windows
IPC: E05F7/04
Filed: 1921-01-29
Abstract: 175,519. Peters & Co., Ltd., G. D., and Sheffield, W. E. Jan. 29, 1921. Rattling of windows, preventing.-In a rattling-preventer for sliding windows of the kind comprising a bowspring fixed to the sash and bearing against the frame, the free end of the spring is prevented from moving laterally or outwardly by means of a plate 5 sunk in and screwed to the sash. The plate is preferably bevelled or rounded at the edge engaging the spring, and has a flange or stud or projecting part to retain the spring laterally. The sash is recessed beneath the plate to take the free end of the spring.
Patent GB-839222-A (GB)
Title: Improvements in and relating to clothes dryers
Inventor: MIDDLETON CHARLES DENIS
IPC: D06F49/00
Filed: 1958-02-04
Abstract: 839,222. Centrifugal driers. JACKSON INDUSTRIES Ltd. Jan. 23, 1959 [Feb. 4, 1958], No. 3573/58. Class 34(2) The lid 2 of a spin drier is locked in position while the drum (not shown) is rotating by a pivoted vane D having a tongue C which moves to engage a slot B in a block A beneath the lid under the air pressure generated by rotation of the drum. The drier motor is operated by a mechanism wherein closure of the lid closes a section of the motor circuit by a plunger N on the block A, which closes a movable contact E mounted on a movable contact arm with a fixed contact E1. Electrical connection is made from the fixed contact E1 by a resistance wire 6 wound around a bimetallic strip F and terminating at a contact G attached to the free end of the strip F. A pivotally-mounted member H is biased on a disengaged position (shown dotted) by a spring 7 until a starter button J is depressed to force the member H to engage the contact G to complete the motor circuit from terminals K, L which are connected in series with the motor and so start the motor. The resistance wire 6 is then in series with the motor and heats the bimetallic strip 7 until the strip flexes after a predetermined period of time to disengage the member H from the contact G, thus breaking the circuit and stopping the motor. A stop button M is also provided to disengage the member H from contact G to break the circuit.
Patent GB-1094736-A (GB)
Title: Improvements in or relating to wave-guide resonators
IPC: H01P7/06
Filed: 1966-01-27
Abstract: 1,094,736. Tuning cavity resonators; klystrons. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 27, 1966 [Jan. 30, 1965], No. 3718/66. Headings H1D and H1W. An H 101  cavity resonator is associated with sets of partitions and corresponding plungers whereby it may be tuned over various ranges. Thus, four partitions 16, joined in pairs at the centre line 12, may be used to reduce the width of resonator 1. Plungers 17 of reduced width are used to tune the cavity. These may be provided with means for attaching the adjusting shafts 4 of the original (full-width) plungers. As shown, the left-hand pair of partitions defines, at the centre line 12, a short circular passage 18 forming an extension of the coaxial coupling socket 11. A removable extension of the inner conductor extends through the passage 18 to a coupling loop (not shown). The partitions are provided throughout their lengths with spring contacts. The opposite broad walls of the cavity may be provided with central circular apertures having spring contacts for reception of the electrodes of a klystron.
Patent GB-364884-A (GB)
Title: Improvements in weft replenishing mechanism for looms
IPC: D03D45/20
Filed: 1931-02-06
Abstract: 364,884. Looms with automatic weft replenishment. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Crompton & Knowles Loom Works ; Worcester, Massachusetts, U.S.A.) Feb. 6, 1931, No. 3802. [Class 142 (iii).] Relates to multi-colour replenishing looms in which the replenishing mechanism M is provided with a colour slide comprising a shaft 13 slidable transversely of the lay and carrying fingers 14 for controlling the bobbins in the magazine and d a shaft 15 on which is slidably mounted the head 17 of a link 16. The link is connected to a floating actuator lever 19 pivoted to a cam-operated rod 22. According to the invention, the guide 57 for the rod 22, the slot guide 26 for the actuator lever, the stop 23 for that lever, the controller 24 for engagement with the floating lever under the action of the weft detector, and the weft detector are mounted on a common support 51 which is adjustably secured to the rod 50 about which the transferrer turns against the action of the spring 34. The weft detector is adjustably mounted on a stand 40 secured to the support 51 by bolt and slot devices 54, 55, 56. The support may be adjusted along the rod 50 without disturbing the colour slide with respect to the parts of the magazine with which it co-operates.
Patent GB-229305-A (GB)
Title: Improvements in or relating to apparatus for separating solid and liquid constituents from gases and vapours
IPC: B01D45/08
Filed: 1925-02-11
Abstract: 229,305. Szamatolski, H., and Blohm, A. Feb. 13, 1924, [Convention date]. Separators.-The apparatus comprises a number of channelshaped elements with tongues projecting therefrom and arranged alternately to the right and left of adjacent surfaces of the channels so that tongued and solid portions of the elements alternate on each side of the channel, and trap chambers are formed alternately on opposite sides. The elements may be all alike, or separate imperforate and tongued elements may be employed. Fig. 4 shows all the elements tongued and perforated, forming continuous separating spaces a and separate trap space b. Fig. 5 shows a modification. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the form shown in Fig. 7 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-693858-A (GB)
Title: Improvements in, and relating to, card-index boxes
IPC: B42F17/02
Filed: 1951-02-16
Abstract: 693,858. Filing papers. STIEGLER, J. P., and HAUSSER, K., [trading as TAYLORIX ORGANISATION STIEGLER, HAUSSER & CO.]. Feb. 16, 1951. [March 3, 1950] No. 3841/51. Class 146 (i). A box for filing index cards or sheets in which the inner faces of the side walls 3 are provided with longitudinally extending parts 5 or 8 having vertically disposed slots 6 spaced from the walls 3 for receiving the ends of bars 11 extending transversely and supporting plates 13 for the cards, has the slotted longitudinal parts 5 or 8 bent outwards at their upper ends towards the upper edges 3a of the side walls 3 and combine to form funnel-like means for guiding the index cards into position in the box. As shown in Fig. 1, separate parts 5 are secured as by spot welding or screws 7 to the side walls, the upper and lower sections 5a, 5b being bent as shown to provide parallel surfaces for the sides of the index cards, the top of section 5a being bent to meet the top 3a. As shown in Fig. 5, the part 8 is formed integral by bending the side walls at 9, the touching parts being secured to the side walls if desired. A cover 4 is provided to rest on the top 3a of the side wall 3 or on a ledge 10 formed therein. The separator plates 13 are formed with lugs 12 fitting into pairs of slots 14 formed in the bottom 15 of the box.
Patent GB-371461-A (GB)
Title: Improvements in the treatment of filamentary and other products
IPC: D06M11/71
Filed: 1930-12-20
Abstract: <PICT:0371461/IV/1> Artificial yarns, filaments, threads, and the like are subjected while in warp formation to a stretching operation applied to the warp as a whole.  Stretching is facilitated by treatment of the material with a softening agent which increases their plasticity. The process is particularly applicable to warps of cellulose acetate or other cellulose ester or ether.  The warp may proceed to or from a beam or a creel of packages and it may be stretched by passing over or round rollers or between nip rollers rotating at different speeds.  If desired the warp may be subjected to several stages of stretching either during a single travel or with intermediate reeling.  Between successive stretching stages the warp may pass round faller-rollers which adjust the tension and maintain the threads in position.  Softening agents may be incorporated in the spinning solutions, or the filaments may be immersed in the swelling agent which may be in liquid or vapour form.  The filaments may be treated with the softening agent when wound on perforated supports, the agent being sucked or forced through the package.  The softening agent may be aqueous dioxane, acetone, acetic acid, lactic acid, ethyl lactate, ethers of glycol, phenols, acetins, aldehydes, diacetone alcohol, thiocyanates, or zinc chloride.  As shown in the drawing, yarns from a creel of packages 1, preferably large cheeses, are carried through a reed 2, over roller 3, and thence between pairs of nip rollers 4 immersed in a bath 5 containing softening fluid. The several pairs of nip rollers may each exert a stretch upon the yarns, or two pairs only may be immersed so as to apply only one stage of stretching.  From the last pair of nip rollers the filaments are carried out of the softening bath and sprayed with washing fluid. Specifications 277,089, 323,790, 336,217, [all in Class 2 (ii), Cellulose &c.], and 370,430 are referred to.  The Provisional Specification describes also a process of stretching in stages with one or more intermediate rest periods in which the softened threads are relieved of the stretching tension while retaining their plasticity.