baber/WOPTO huggingface dataset:
Patent GB-376946-A (GB)
Title: Improvements relating to gearing for producing intermittent motion
IPC: F16H27/04
Filed: 1931-07-08
Abstract: 376,946. Toothed or friction gearing. ANSELL, W. H. and IMPERIAL & INTERNATIONAL COMMUNICATIONS, Ltd., Electra House, Moorgate, London. July 8, 1931, No. 19695. [Classes 80 (i) and 80 (ii).] A device for driving intermittently a shaft 4 from a continuously rotating shaft 5 comprises one or two bars 1, 1a, connected eccentrically with the shaft 5, swinging links 8, 8a, and rack and tooth or friction engagement of the bars with a pinion or pinions on the shaft 4. The racks 2, 2a describe D-shaped curves of which the straight part only is utilized for the drive. The links 8, 8a are pivoted to a block 10 pivoted at 11 and adapted to be oscillated by an eccentric 18, link 17 and a forked piece 16, 16a. If two bars are used as shown, pinions 3, 3a of different diameters are mounted on the shaft 4, so that by changing the position of the block 10 and therefore the bar driving the shaft, a change of speed may be obtained. The change of position is effected by means of a spring-pressed lever 20 and a rod 19 pivoted to the piece 16, 16a. The apparatus is especially intended for feeding paper strip in telegraph transmitters.
Patent GB-708612-A (GB)
Title: Improvements in or relating to closure flap folding and envelope stacking mechanism for envelope machines
Inventor: HEYWOOD VINCENT EATON
IPC: B31B19/00
Filed: 1952-08-06
Abstract: 708,612. Sheet delivering apparatus. UNITED STATES ENVELOPE CO. Aug. 6, 1952, No. 19801/52. Class 100 (1). [Also in Group XVII] In a mechanism for folding down the seal flap of envelopes and for stacking the completed envelopes, the formed envelopes are received from a drying device and advanced flatwise in a horizontal path with the seal flaps trailing, glued margins downward, by means of a suction roller 42 to a pair of rolls 45, 46, which align the envelopes, the lower roll 46 being provided with a pair of radial fingers against which the bottom edge of each envelope is delivered. The rolls 45, 46 advance the envelopes to a scoring roll 54 which co-operates with a roll 56 of rubber or like material to mark the fold line. From the rolls 54, 56, envelopes are delivered to a folding roll 64 which co-operates with a suction roll 65, the ungummed surface of the seal flap adjoining the fold line being held by suction against the roll 65 when the pocket portion of the envelope has passed through the rolls 64, 65, whereby the pocket portion tends to sag downwardly and is bent over parallel with the flap as the latter is carried upwardly by the roll 65. As the move. ment continues the bend is converted into a fold by the roll 70 and the envelope is no longer held by suction on the roll 65. The roll 70 is carried by a pair of spring-loaded bell crank levers, Fig. 13 (not shown), which are pivoted upon the shaft 60 of the roll 64 and co-operate with a cam shaft operated by a handle 80 to adjust the spacing of the roll 70 from the roll 65 as desired. The upper rolls 45, 56 and 65 are carried by spring-loaded blocks 81 slidable in grooves in the walls 21 of the machine, the spacing between the upper and lower rolls being adjustable by screws 85. To raise the upper rolls for maintenance, cams engage the lower portion of the blocks 81 and are rotatable through handle members 88. The envelopes with their seal flaps folded are delivered upwardly to the envelope transferring mechanism which comprises three spaced wheels 98 rotating with a sleeve 92 about a hollow shaft 93 which is connected with a vacuum creating means. A relieved portion 95 is provided on the shaft 93 to form a chamber which communicates with the interior of the shaft through ports 96 and as the sleeve 92 rotates the ports 97 communicate intermittently with the ports 96. Each of the wheels 92 is provided with an annular chamber 99, which communicates directly with a port 97, and a flat portion 98<SP>1</SP> on the wheels communicates through a conduit 100 with the chamber 99. As the envelopes are delivered from the rolls 65, 70 they are positioned within one of the wheel flats 98' of each of the three wheels and carried by suction in a clockwise direction to a table 101 where the vacuum is broken and they are stacked. Specification 697,898, [Group XVII], is referred to.
Patent GB-203133-A (GB)
Title: Improvements in camera attachment
IPC: G03B15/08
Filed: 1922-07-19
Abstract: 203,133. Myers, S. July 19, 1922. Cameras for taking a series of photographs on one plate by the use of a movable lined screen are provided with screws 28, 29 engaging one edge of the screen 22 and having cranks 31 connected by a lever 32 so that the screws can be operated in unison either by the handle 43 or by the rod 32 to move the screen laterally. Spring pressed stops 33 engage the opposite edge of the screen. The movement of the screen between successive exposures is gauged either by means of an indicator 42 and a graduated slide 34 connected by a link 35 to one of the cranks 31 or by stops 37, 38 on the slide 34, which engage with stops 39, 40 which may be adjustable on the plate holder., As shown the stop 38 is adjustable. The lined screen is preferably in the form of a glass plate having closely spaced narrow grooves, the grooved portions 23, Fig. 7, being left transparent and the ribs 24 being made opaque.
Patent GB-1406753-A (GB)
Title: Cable television systems
IPC: H04N7/173
Filed: 1973-04-26
Abstract: 1406753 Cable television distribution HUGHES AIRCRAFT CO 26 April 1973 [26 April 1972] 19948/73 Heading H4R In a cable television system having a distribution network and facilitates for transmitting signals in each direction between a central station and a plurality of subscriber stations, a circuit 21a-21n, Fig. 1, is provided at predetermined positions in the network to affect or control the signals in the respective directions and is controlled by a means 27a- 27n responsive to information specifically addressed to it from the control station for selectively generating at least one of a plurality of command signals to effect the said control. The central station 13 includes a local processing centre 16 comprising a computer 17 and equipment 12 for processing video transmissions. The computer may include programmed control arrangements for ancillary equipment for controlling lights, closed circuit TV, sprinklers or isolating switches for routine fault finding; may respond to local noise or level measurements made on upstream signals in equipment 20 to signal adjustments to downstream equipment or may respond to signals from monitoring equipment 29 at downstream stations to send such signal adjusting signals. Frequency band allocations for the two directions are exemplified and include TV bands in groups of nine at various regions in the downstream band, spaces for upper and lower downstream AGC pilots, spaces for digital data channels over which measurement and control information are transmitted, and channels for conveying TV programmes to the central station for redistribution. The digital data may be transmitted to the central station by frequency shift keying and from the central station to the control units by phase shift keying. Upstream and downstream signals are separated by tapping circuits 23a-23n and 25a-25n respectively. A digital control signal from the central station includes a start bit, address bits, command information bits indicating what is to be controlled, and command function bits indicating the degree of control. The address bits are compared with stored bits at a monitoring station and when identity is established the command information bits develop a signal to activate the controller (211-220), Fig. 5 (not shown), of the circuit to be controlled, to enable the function bits to be read into a register. The outputs from the command function receiver are fed via d/a converters to effect gain and slope control of amplifiers conveying the measured signals in the respective directions, and directly to actuate switches. The operation of the switches controlling filters and attenuators in the upstream path is described with reference to Fig. 3 (not shown), and a detailed description of the processing of the digital signals is included. The central station may include a local studio.
Patent GB-662532-A (GB)
Title: Improvements relating to apparatus for stabilising three-phase voltage supplies
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G05F1/42
Filed: 1947-07-25
Abstract: 662,532. Automatic control systems for stabilizing polyphase supplies. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 25, 1947, No. 19999/47. Class 38 (iv). A three-phase voltage supply is stabilized so that inequalities in magnitude and phase separation of the voltage between phases, taken cyclically, are substantially anulled. The input 1, 2, 3, Fig. 1, is connected to the output 13, 14, 15 by three, star-connected, variable auto-transformers 4. 5, 6, the movable contacts of which are driven by reversible splitfield motors 10, 11, 12, respectively. The motors may be provided with built-in generators so connected as to prevent hunting. The two field windings of motor 10 are connected to the anodes of a push-pull pair of triodes 22, 23. The bias voltage on the grid of valve 22 is stabilized by a neon stabilizer 25 ; the bias on valve 23 is the resultant of the voltages across resistors 28, 29. These voltages, supplied by rectifying and smoothing devices 30, 31, are proportional to the voltages between phases 13, 14 and 13, 15, respectively. Hence transformer 4 is adjusted to maintain these phase voltages equal in magnitude. Transformers 5 and 6 are similarly controlled so that the voltages between phases are all equal and hence have equal phase displacements one from the other. The three potential transformers 33, 34, 41, may be replaced by a single 3-limb transformer. The regulators 4, 5, 6 may be replaced by tapped transformers, induction regulators or saturable reactors. In a modification, Fig. 3, each rectifying device 30, 31, 40 has applied to it the vector sum of the voltages between the corresponding phase and the other two phases by means of a single 3-limb transformer having a deltaconnected primary 47, 48, 49, and three two-phase secondaries 50, 53, 54. In another modification, Fig. 4 (not shown), the three regulating auto-transformers are connected in delta. Specification 421,546, [Group XL], is referred to.
Patent GB-422566-A (GB)
Title: A sheep dip mixer
IPC: B01F11/00
Filed: 1933-07-15
Abstract: 422,566. Mixing-appliances. DISHINGTON, I., The Mount, Heysham, Lancashire. July 15, 1933, No. 20054. [Class 86] An appliance for mixing sheep dip comprises a conical hopper A to which is fitted by a bayonet joint, &c., a perforated tube C in which is slidably mounted a tube D ; the perforated tube has an inwardly coned, imperforate bottom c. A conical plunger G, having radial vents and vanes, is reciprocated inside the tube C<1> and water is admitted from the vessel F, into the mouth of which the hopper A fits, by raising the tube D. The paste, &c., within the tube C is first softened and cut up by means of the plunger and the tube D then raised to form the mixture.
Patent GB-1166584-A (GB)
Title: Transparent Plastic Sheets
Inventor: ROHM WILHELM
IPC: C08K5/315
Filed: 1968-04-29
Abstract: 1,166,584. Radiation absorbent cellulose ester sheets. FARBENFABRIKEN BAYER A.G. 29 April, 1968 [29 April, 1967], No. 20118/68. Heading C3F. A transparent sheet suitable for the production of welders' screens or goggles comprises an organic cellulose ester, from 0À05-1% by wt. of a U.V. radiation absorber, from 0À01-1% of finely divided carbon black of particle size average less than 120 A and, optionally, from 0À01-0À3% of a dye soluble in the cellulose ester. By organic cellulose ester is meant a cellulose acetate having at least 55% by wt. combined acetic acid and containing not more than 20% of plasticizer; or a cellulose propionate and/or acetate butyrate containing not more than 10% of plasticizer. The ester must also have a Vicat heat distortion (defined in DIN 53 460) of at least 104 C. The radiation absorber may be based on benzotriazole, benzophenone or acrylonitrile. Phthalic and/or adipic ester plasticizers are specified. As dye, a proprietary phthalocyanine blue or green is specified.
Patent GB-838649-A (GB)
Title: Apparatus for producing a uniform bat of fibrous material
IPC: D04H1/72
Filed: 1957-06-26
Abstract: 838,649. Feeding fibrous materials. FLEISSNER, J. E., FLEISSNER, H., and FLEISSNER, G., [trading as FLEISSNER & SOHN MASCHINENFABRIK]. June 26, 1957 [July 4, 1956], No. 20183/57. Class 120(1) In apparatus for producing a uniform fibrous fleece on a suction drum 10 which conveys it for further treatment, material fed from a hopper 13 on to a conveyer belt 11 is picked up from the belt and elevated by a needle drum 14. Excess material is picked from the belt by a needle roller 16 and thrown back on to belt 11. The remaining material carried round by drum 14 is stripped therefrom by a second needle roller 19 and thrown down on to conveyer 11 and towards drum 10 whereon it is deposited as a uniform fleece. Drum 14 is a perforated suction drum, suction being restricted by a cover plate 22 to that portion of the drum wall which picks material from the belt.
Patent GB-362335-A (GB)
Title: Improvements in fabric doubling frames
IPC: B65H45/09
Filed: 1931-07-16
Abstract: 362,335. Folding fabrics. MONFORTS, J., 30, Erffstrasse, Gladbach, Munich, Germany.-(Assignee of Monforts, A. [Firm of; 30, Erffstrasse, Gladbach, Munich, Germany.) July 16, 1931, No. 20447. Convention date, Dec. 11, 1930. [Class 42 (ii).] In a rigging machine with electromagnetically c o n - trolled rollers engaging the edges of the fabric, a single edge feeler 17 is pivoted on a pendulum frame 16 and carries contacts 21, 22 in the magnet circuits to engage contacts on a bar fixed to the frame 16. If one edge x or y of the fabric projects the corresponding circuit is closed, but if both edges project they simply move the pendulum 16.
Patent GB-1358311-A (GB)
Title: Hardening gelatin-containing layers
IPC: C07D239/42
Filed: 1971-04-19
Abstract: 1358311 Difluorochloro-pyrimidines AGFAGEVAERT AG 19 April 1971 [27 Jan 1970] 20478/71 Heading C2C [Also in Divisions G2 and C3] 4,4<SP>1 </SP>- Di - (2,4 - difluoro- 5 - chloro - pyrimidin- 6-yl-amino) stilbene-2,2<SP>1</SP>-disulphonic acid is prepared by reacting 2,4,6-trifluoro-5-chloro-pyrimidine with 4,4<SP>1</SP>-diamino stilbene-2,21-disulphonic acid. Similar compounds are prepared by reacting the pyrimidine compound with 4,4<SP>1</SP>- diaminodibenzyl-2,2<SP>1</SP>-disulphonic acid; 4,41-diaminodiphenyl sulphide - 2,21-disulphonic acid; 2,2<SP>1</SP> - di-aminodiphenyl-4,4<SP>1</SP>-disulphonic acid; andbenzidine-2,2<SP>1</SP>-disulphonicacid.Difluorochloropyrimidylaminoethyl methacrylate is prepared by reacting 2,4,6-trifluoro-5-chloropyrimidine with 2-aminoethyl methacrylate hydrochloride. Reference has been directed by the Comptroller to Specification 1,221,514.
Patent GB-1278081-A (GB)
Title: Improvements in or relating to toy or model vehicles
Inventor: FAIRBAIRN HOWARD WILLIAM
IPC: A63H17/00
Filed: 1969-01-21
Abstract: 1278081 Wheel and axle METTOY CO Ltd 21 Jan 1970 [21 Jan 1969 22 April 1969] 3396/69 and 20510/69 Heading A6S An axle and wheel assembly for a toy car comprises an axle rod 3 and a pair of wheels 1 rotatably mounted thereon, wherein each wheel 1, or at least a central hub portion thereof, is formed as a single one piece moulding of synthetic plastics material having at its centre a through bore provided at each of its ends with an inwardly projecting annular rib 2 having a very small running clearance with the axle rod 3. The axle rod 3 may be formed at each of its outer ends with a head 4, and the wheel hubs may be made of a resilient material which allows the heads 4 to be forced through the bores and past ribs 2. The wheels may consist of a hub portion, a die-cast wheel portion with a central bore and a rubber tyre. The inner face of each wheel may be provided with a protrusion 6 which contacts the chassis C. The assembly may be used with a toy car having springs 7 in the form of metal wires which pass over the axle rods 3.
Patent GB-148541-A (GB)
Title: Improvements relating to vacuum jacketed vessels for holding liquid-air or liquid-air blasting-cartridges
IPC: F17C3/08
Filed: 1920-07-10
Abstract: 148,541. Sokal, S., (Sprengluft-Ges.). July 10, 1920. Cold and heat retaining vessels.-Vessels of metal for storing liquid air or liquid-air blasting- cartridges are constructed in such a way as to reduce the number of soldered joints within the vacuum space. The inner vessel a is of drawn metal in one piece, and has a rounded end e. The upper edge is formed with an outwardly turned flange b engaging over an inwardly turned flange c on the edge of the outer wall d, only the exposed part h of the joint being soldered. The usual perforated cover f for retaining charcoal or like absorbent is formed with a tapered rim, which is fitted over the end e and secured by a soft metallic cement at the part g. The outer bottom i is tapered and similarly secured to the onepiece outer wall d, in order that it may be removed for repairs &c. The Specification as open to inspection under Sect. 91 (3) (a). comprises also the following subject matter -The construction is applicable to spherical vessels with long necks. This subjectmatter does not appear in the Specification as accepted.
Patent GB-261824-A (GB)
Title: Improvements in or relating to percussive tools
IPC: E21C37/24
Filed: 1925-08-15
Abstract: 261,824. Rayner, G. H. T., and Rayner, P. Aug. 15, 1925. Percussive drills.-In a hammer drill more particularly intended for channelling in coal or rock, the tool is returned by pressure fluid independently of the action of the hammer piston. For this purpose a small piston k formed on the tool shank is raised by pressure fluid supplied to the space m through a passage q from the front end of the hammer cylinder, whilst an exhaust r is constantly open behind the piston k. Pressure fluid is also supplied to the space m by a passage s and escapes through a port v, thus maintaining a reduced pressure in the space m when the front end of the main cylinder is open to exhaust, and holding up the tool until it is struck by the hammer piston. When the device is applied to a hand-held drill, supporting members may be employed in the manner described in Specification 21082/08.
Patent GB-828594-A (GB)
Title: Safety device for operation simulators for aircraft engine air starting installations
IPC: F16L37/23
Filed: 1958-06-26
Abstract: 828,594. Hose couplings. BLACKBURN & GENERAL AIRCRAFT Ltd., CHILVERS, E. E., and CLARKSON, E. June 26, 1958. No. 20575/58. Class 99(1) [Also in Group XXXVI] A safety device for operation simulators for aircraft engine airstarting installations, in particular ground starter trolleys, comprises a pivoted lever 8 having a part 8<SP>1</SP> normally obstructing an electrical socket 6, a part 8<SP>2</SP> engageable by a sleeve 10 of a hose coupling to effect angular displacement of the lever on movement of the sleeve into locking engagement, and a part 83 which latches behind the sleeve and effectively locks the sleeve during the time an electrical plug is engaged in the socket. The hose coupling is of the kind comprising balls 12 projecting through a wall of the coupling member 11 and co-operating with a groove 3 in the coupling member 2, displacement of the balls being prevented by the axially-movable spring-loaded sleeve 11. Air from the hose passes through a throttling aperture 5. The lever may be spring-loaded, or move into the normal position thereof by gravity.
Patent GB-460027-A (GB)
Title: Improvements in the dyeing of cellulose esters and ethers
IPC: D06P1/673
Filed: 1935-07-19
Abstract: Cellulose esters or ethers, dyeing.--The fastness to combustion gases of dyeings on cellulose ester or ether material is improved by treating the dyed material with a water soluble thiosulphate. The degree of improvement may be measured by suspending samples of the treated and untreated materials for some 6 to 10 hours from a framework arranged over the upper end of an earthenware pipe provided at its lower end with a gas flame and comparing the amounts of fading.  In an example acetate artificial silk dyed with 1 : 4 : 5 : 8 tetraminoanthraquinone is immersed for 1 minute in a 5 per cent aqueous solution at 20 DEG  C. of sodium thiosulphate and dried. Specification 246,879, [Class 15 (ii)], is referred to.
Patent GB-446145-A (GB)
Title: Improvements in or relating to electrical oscillation generators
IPC: H03D7/10
Filed: 1935-07-22
Abstract: 446,145. Valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 22, 1935, No. 20795. Convention date, July 20, 1934. [Classes 39 (i) and 40 (v)] One grid of a multi-grid valve is located between electrodes, preferably screen-grids, at a higher positive potential and is connected to frequency determining means to generate oscillations by dynatron action using secondary emission, the useful output being taken from a further electrode such as the anode. In a generator giving a small constant output for measurements or comparison, the third grid G3 of a 4-grid valve is supplied through the tuned circuit L, C from a voltage-divider W1, W2 with a positive voltage lower than that on the adjacent grids G2, G4. Dynatron oscillations generated in the circuit L, C are taken off from the anode circuit at L<11>. Retroaction effects are reduced by constructing the grid G4 as a screen and stray capacity effects are avoided by an earthed electrostatic screen S. The oscillations may be modulated with the frequency of the supply mains M, or with harmonies thereof if the rectifier D is full-wave or multiphase instead of single-wave as shown, by moving the switch Sch on to contact II to supply the anode with unsmoothed rectified current. Alternatively, a speechcurrent transformer may be inserted in the anode circuit, or the anode circuit may be tuned to a desired modulation frequency and the anode A maintained at a lower voltage than the grid G4 to generate by dynatron action oscillations which modulate the main oscillations generated in the circuit L, C. The first grid G1 is connected to the cathode K or given a low positive or negative bias. The oscillating valve of Fig. 1 may be used as a self-oscillating mixer valve of a super. heterodyne receiver, Fig. 2 (not shown), by applying the incoming signal oscillations to either of the grids G1, G2.
Patent GB-813620-A (GB)
Title: Improvements in roller box tools for machine tools
IPC: B23B29/16
Filed: 1957-07-03
Abstract: 813,620. Lathe details. SAUNDERS, A., and ACCURATE TOOLS (SAUNDERS), Ltd. July 3, 1957, No. 20957/57. Class 83 (3). A roller-box tool comprises a body A having guides for radial slides B1, B2, the former carrying a guide roller F on a fixed spindle P and the latter carrying a roller F1 on a spindle H slidable in a slot G in the slide and pressed radially inwards by a spring M encircling a screw L in the slide. Rack-teeth on the slides engage double-pinions E1 meshing with a sun-gear O, so that when the latter is rotated by a worm O1, the slides are advanced simultaneously towards the work, the spring- mounting of roller F1 accommodating any lack of alignment between the box-tool mounting and the work-axis. When both rollers are in engagement with the work, roller F is backed-up by the screw L and is locked by rotating its spindle H into a nut I. The tool 9, which engages the work tangentially, is secured by a screw 10, Fig. 4, and an end-screw 23, Fig. 1, in a holder 7 adjusted radially of the work by a screw 12 rotatable in a carrier V attached by a stud 5 and nut Z to a slotted platform X on the body A. The screw 12 is slidable in carrier V to allow it to move the tool quickly from the work. The rollers F, F1 are mounted on ballbearings, and end-play of worm O1 is taken up by a ball-and-screw S. Holder 7 is locked in the carrier V by a nut 16 screwing thereon.