baber/WOPTO huggingface dataset:
Patent GB-1496043-A (GB)
Title: Gang lawn mower
IPC: A01D75/30
Filed: 1975-06-30
Abstract: 1496043 Gang lawn mower JACOBSEN MFG CO 30 June 1975 [8 Aug 1974] 27604/75 Heading A1F A gang lawn mower comprises a riding- type tractor 10 having an engine 29, ground wheels 11-13 and  a frame 26-28 on which are mounted three mowers 21-23 so as to be self-adjusting to the ground elevation and to have selectably adjustable cutting heights. The rear mower 23 is mounted on the frame member 27 via arms 42, a rotatable shaft 44, articulated linkages 48 and via a collar 53 clamped to the shaft 44, an arm 56, link 58 and a pivot connection 72. The pivot 72 and linkages 48 allow up and down mower movement without rotation of the shaft 44. The cutting height is adjusted by rotating a rod 66, to cause rotation of the mower 23 about its skids 24. The front mowers 21, 22 are pivotally interconnected by universal joints 101 at their inner ends where they are supported from the frame 27 by a pusher arm 94, 97 attached at its rear to a sleeve 93 rotatable on shaft 44. These two mowers are counterbalanced by compression springs 119 being urged back by a U-bracket 131, welded to the frame 26, against washers 127 adjustably mounted in a support member 128, thus rotating sleeve 93 about shaft 44, to pivot the pusher arm 94 upwardly and so raise the mowers 21, 22, the outer ends of which are counterbalanced by tension springs 116. Their cutting heights are adjusted by turning a rod 137 threaded with a member 136, so as to rotate members 111 about shaft 99, and hence, mowers 21, 22 about their skids 24. The drive to the wheels and mowers is from the engine 29 via flexible conventional sprocket and chain drive trains, located so that the mowers 21-23 can move up and down whilst drive to the mowers continues. Conventional means for putting the mowers 21-23 in a transport position may be employed.
Patent GB-771223-A (GB)
Title: Improvements relating to heteropolar inductor machines
IPC: H02K19/24
Filed: 1955-09-28
Abstract: 771,223. Inductor alternators. SELECTRA, Ltd., and KREBS, E. W. Sept. 28, 1955, No. 27625/65. Class 35. The D.C. excited poles 12 of a heterapolar inductor alternator have a span equal to one rotor slot pitch or a multiple thereof, and are divided, by slots 13 accommodating the A.C. windings A, into a central portion and two outer portions of the same total area. By this means the total pole-flux is substantially constant while linkage with the A.C. windings is controlled by the rotor teeth. The invention is shown for a three-phase machine having six poles, but a four-pole single-phase machine is also described. By connecting the exciting winding in series-parallel arrangements, and by the use of damping windings on the poles, the harmonics are eliminated. For generating higher frequencies the stator poles may carry teeth, in which case the half-tooth span at either end of the pole may be removed without disturbing the equivalent effect. The openings of slots 13 is preferably small but may be substantially equal to a rotor slot pitch when this is small.
Patent GB-1001162-A (GB)
Title: Device for the magnetic alignment of magnetic tape
IPC: G11B5/03
Filed: 1963-07-12
Abstract: 1,001,162. Electric coils. GEVAERT PHOTO-PRODUCTEN N.V. July 12, 1963 [July 25, 1962], No. 27693/63. Heading H1P. A coil for the magnetic orientation of recording tape during manufacture is made by bending the ends of a previously wound coil 13, 14, oppositely outwards at 17, 18 and 19, 12 to allow the tape 25 to pass through the coil window parallel to its sides to produce transverse orientation of the tape material. The sides may be embraced by a further coil 27 in order to produce orientation at an angle to the tape. This angle may be controlled by proportionate excitation of the two coils. If desired each end of the coil may be bent in one direction only (Fig. 11, not shown) to facilitate an oblique traverse by the tape. Pulsating D.C. may be used.
Patent GB-252661-A (GB)
Title: Improvements in the treatment of cellulose ester materials
IPC: D06M11/44
Filed: 1925-11-04
Abstract: 252,661. Clavel, R. May 30, 1925, [Convention date]. Yarns and threads, treating with liquids.- Materials for use for example as artificial leather or leather substitutes are formed by treating cellulose acetate or other cellulose ester threads or yarns with tannins or other phenolic bodies and bringing the same into chemical reaction with metallic compounds of metals other than alkali metals. In an example, 5 kilograms of acetyl cellulose in hank or fabric form is treated for two hours in 100 litres of 1 per cent solution of tannin at a temperature of 70‹ to 80‹ C. The goods are then rinsed and treated :n a liquid or foam bath of 100 litres of a 3 per cent solution of bismuth nitrate to which 150 c.c. of concentrated ammonia is added. This treatment is started cold, and the temperature raised to 65‹ C., after which the goods are treated with a 3 per cent bath of ferric chloride rinsed with water and dilute hydrochloric acid dyed and calendered. The goods may be treated with a finishing or dressing solution such as paraffin or other oil. Salts or oxides of bismuth, zinc, silver and iron may be used in the process.
Patent GB-873852-A (GB)
Title: Improvements in or relating to sewing and the like machines
IPC: D05B69/20
Filed: 1958-08-29
Abstract: 873,852. Switching arrangements. PFAFF A.G., G. M. Aug. 29, 1958 [Aug. 31, 1957], No. 27764/58. Class 38 (4). [Also in Group VII] In order to lock the stitches at the beginning or end of a seam, a sewing machine is reversed after a predetermined number of forward stitches and then again driven forwards after making the same number of backward stitches. A cam on the driving shaft of the machine (not shown) closes a contact 10 every time a stitch is made and this energizes the coil D of a 10-position stepping switch having 3 banks of contacts e.g. 3d0, 4d0, 5d0. The main bank 3d0 &c. can energize the reversing solenoid B of the machine through manual selector switches 1c . . . 5c any one of which can determine the number of switch steps, i.e. the number of forward stitches, preceding the reversal, and also because of their increasing number of contacts, the number of switch steps, i.e. the number of backward stitches, before the stepping switch is clear of the selected contacts and the solenoid B is released to allow the machine to return to forward stitching. After a total of 10 stitches a relay A is energized over contact 5d10 to open contact 1a and disable the system. The stepping switch is homed on to contacts 3d0 &c. by closing a switch 22 at the end of the sewing operation. To lock the stitches at the end of a seam instead of the beginning, a switch 12 is maintained open by an undisclosed counter or timer until the selected number of stitches from the end, when the system operates as above.
Patent GB-499584-A (GB)
Title: Improvements in vessels for delivering liquids in drops
IPC: B65D47/18
Filed: 1938-09-23
Abstract: 499,584. Bottles &c. SOC.OF CHEMICAL INDUSTRY IN BASLE. Sept. 23, 1938, No. 27773. Convention date, May 25. [Classes 66, 125 (i) and 125 (iii)] A drop delivery bottle or other vessel of the kind wherein a tube g, Fig. 1, slides downward inside a guide f as far as permitted as by a stop h so as to protrude from the mouth of the vessel, is characterized in that the tube is of comparatively wide bore and has sufficient play in the guide to permit passage of liquid between its outer surface and the guide while air passes up the bore of the tube. The stop h on the tube g may be produced by heating the tube and dropping it into the vessel. The outer end of the tube 9 is preferably cut obliquely. The neck f of the bottle is preferably enlarged at its outer end. In a modification, Fig. 2, a guide i is formed of a separate part held by a perforated cork or rubber stopper m. The guide i is preferably slotted at l. In another modification, Fig. 5, the neck of the bottle is placed angularly.
Patent GB-160212-A (GB)
Title: Improvements in and relating to the construction of wooden ships
IPC: B63B5/00
Filed: 1919-11-10
Abstract: 160,212. Ogawa, R. Nov. 10, 1919. Keels.-The local and longitudinal strength of wooden ships is increased without decreasing the stowage capacity by combining with the usual keel or keelson a continuous metal plate 1 at the top of the keelson. Alternatively, two metal plates 2 may be fitted and bolted together by bolts 3. A false keel or shoe 4 completely encloses the bottom plate and bolt heads to prevent corrosion &c.
Patent GB-797753-A (GB)
Title: Improvements in or relating to hydraulic control units
IPC: F15B13/04
Filed: 1954-09-27
Abstract: 797,753. Hydraulic control systems; valves. MARLEY & CO., Ltd., W. H., NORTON TOOL CO., Ltd., and NORTON, D. E. Dec. 28, 1955 [Sept. 27, 1954], No. 27855/54. Classes 69 (2) and 135. A double-acting ram has the connection of one end of the ram cylinder 47 to a supply line 18 and to a return line 32 controlled by a valve 24, and the other end by a valve 25. The stems of valves 24, 25 are spring urged into contact with a common rocker arm 41. A weight or spring-loaded relief valve 48 is disposed between the supply and return lines.
Patent GB-1473872-A (GB)
Title: Tufting machines
IPC: D05C15/32
Filed: 1974-06-24
Abstract: 1473872 Tufting machines CARD & CO INC 24 June 1974 [23 July 1973] 27880/74 Heading DIG  A tufting machine has yarn feeds 17 each comprising two rollers 33 34 coupled by gears 39, 40 and driven through one of three clutches to give a choice of three drive speeds. Two clutches 35 and 36 are mounted coaxially with the feed rollers on shafts 43 and 44 respectively (Fig. 5) and the third is mounted on a third shaft 38. These shafts are chain driven from three drive shafts 20, 21 and 22 in the main frame, which in turn are chain driven through a gear box 85 from the main shaft 15. The clutches (Fig. 7, not shown) are electromagnetic and selected by the switch box 81 which is controlled by the pattern control mechanism 82. The rollers, clutches and sprockets 50, 55 and 60 are all mounted on a module 30 which can be removed easily from the main housing for repair.
Patent GB-1011359-A (GB)
Title: A method and device for the production of filled tubular bag wrappings
IPC: B29C65/74
Filed: 1963-07-15
Abstract: 1,011,359. Packaging-machines. HAMAC HANSELLA A.G. July 15, 1963 [July 14, 1962], No. 27922/63. Heading B8C. A packaging-machine for the production of filled tubular packages comprises sealing jaws 11, 14 which transversely seal the tube and which draw it downwardly during the sealing action and wherein these jaws are opened and closed in two stages, the greater part of the opening and closing travel being effected mechanically and the last millimetres of travel and the pressure between the jaws being effected pneumatically or hydraulically. Two heads 2 (only one shown) mounted on a vertically reciprocable column 1 guide a bar 3, movable relative thereto, which when vertically reciprocated causes mechanical opening and closing of the jaws 11, 14 by operation of a linkage system 5, 51; 6, 6<SP>1</SP>; 7, 7<SP>1</SP>; 10, 10<SP>1</SP>. The jaws are closed, e.g. to within 2-5 m.m. of one another, by downward movement of bar 3 until links 5, 5<SP>1</SP> are horizontal and then, by admittance of pressure fluid from an electrically-operated valve 17 to a cylinder 15, thereby actuating a piston 16, jaw 14 is pushed against jaw 11. With the jaws closed, column 1 is lowered to draw downwardly a filled portion of tube, Fig. 4, which is simultaneously transversely sealed and then cut by a knife 12 which is displaceable in jaw 11, Fig. 1, by the action of pressure fluid on a piston in cylinder 13. Preferably a feeler 20, Fig. 4, is provided which is coupled to move horizontally with movement of jaw 14. Should a length of uncharged tubing be present the throw of the feeler is sufficient to operate a circuit breaker 23 which prevents current supply to valve 17 and hence complete closure of the jaws and transport of the tube. A circuit breaker NS (Fig. 3, not shown), is operated when column 1 reaches its lower position to cause opening of the jaws. In a modification, when using tubing with printed indicia, a photo-electric device may be incorporated to operate a circuit breaker in the circuit of valve 17 and in this case the opening of the jaws is independent of the position of the column 1.
Patent GB-616899-A (GB)
Title: Improvements in electrical plug-and-socket couplings combined with switches
IPC: H01R13/707
Filed: 1947-10-15
Abstract: 616,899. Two-part couplings. DUKE, G. E., and NICHOLSON, C. H. Oct. 15, 1947, No. 27966/46. [Class 38 (i)] Closure of a circuit through the coupling 10, 15 by rotation of a switch-operating spindle 14 by a handle 39 is prevented if the removable part 15 of the coupling is not in position on the fixed part 10; further, a lug 48 prevents removal of the part 15 when the switch is " on," by engaging a cam plate 36 fixed to a non- circular portion 32 of the spindle 14. The latter is slidable and rotatable in a flanged bush 13 and is connected by a fork 25, urged by a spring 30, to a switch-operating member 26. The cam plate 36 and the bush 13 enclose a spring 43 and have co-operating conical surfaces. The handle 39 has projections 38 engaging the cam plate, and a sleeve portion 40 containing a spring 50 which is retained by a washer 35 secured to the end of the spindle 14. When the handle is turned with the part 15 not in position, a lever arm 45 on the cam plate is obstructed by a stop 18 of the coupling part 10, but when the coupling part 15 is in place an inclined surface 46 of the cam plate engages the lug 48 and is moved upwards, thereby raising the arm 45 clear of the stop 18 and permitting closure of the switch. Removal of the part 15 enables a lid 22 to drop by gravity and close the part 10.
Patent GB-535737-A (GB)
Title: Improvements in or relating to airscrew systems
IPC: B64D35/04
Filed: 1939-10-17
Abstract: 535,737. Differential gearing. MERCIER, P. E. Oct. 17, 1939, Nos. 28050, 28051 and 28052. Convention dates, Jan. 26, March 25 and June 6, Addition to 508,446. [Class 80 (ii)] [Also in Group XXXIII] Gear for driving co-axial airscrew shafts in opposite directions, from a motor-shaft in line with the airscrew shafts, without any reaction couple and with balanced torque as described in the parent Specification, has the symmetrically arranged trains of gears modified to give gearreduction ratios of two or more. In one form, straight toothed gearing similar to that described in the parent Specification is modified by connecting the internally toothed gears to the driving-shaft and casing and the planet carriers to the two propeller shafts. Fig. 2 shows a driving shaft 1 connected to a bevel wheel geared to planet pinions 44 on a carrier 42 connected to one airscrew shaft 9, the pinions 44 also gearing with a double pinion 45, freely mounted, and gearing with planet pinions 47 on a carrier 46 connected to the other airscrew shaft 8, the planet pinions 47 gearing also with a fixed pinion 49. This gives a gear ratio of 4. By inclining the axes of the pinions 44, 47 and increasing or reducing the diameter of the double pinion 45 the gear ratio may be increased or reduced. Fig. 4 shows gearing having a reduction ratio of 2. Fig. 5 shows an arrangement of gears in which the sun pinions are connected to the two airscrew shafts and the planet gears 74, 75 are mounted on the same carrier which can rotate freely. An equivalent mechanism involving bevel gears also is described. Fig. 7 shows a mechanism similar to that shown in Fig. 5 but with compound planet gears. The engine shaft 91 drives a sun pinion 99 gearing with a planet pinion 105 mounted upon the same shaft as a larger pinion 107 which gears with an internally toothed gear 109 connected to one airscrew shaft 8. The corresponding internally toothed gear 110 of the other train is connected to the other airscrew shaft 9 and the sun pinion 104 is fixed. To absorb shock the pinions 105, 107 may be coupled by a torsionally flexible rod 108, as also may the pinions of the corresponding train. The planet pinions are carried by a casing 93 mounted on bearings in the fixed casing.
Patent GB-265515-A (GB)
Title: Improvements in and relating to reinforcement for poles
IPC: E04H12/22
Filed: 1926-11-08
Abstract: 265,515. Spring, G. B. Nov. 8, 1926. Ground anchors.-A reinforcement for the base of a wooden pole comprises ribbed members 4 clamped to the pole 1 by apertured plates 8 and rods 10 which have hooked ends 11 fitting in the apertures 9. Each end 11 is formed with a lip 15 to fit under the plate 8 when rod 10 is in position. The member 4 is formed with a thickened head 16 for driving into the earth. In assembling the reinforcement, the members 4 are placed against the pole 1 and the rods 10 connected to the plates 4, screw-threaded ends of the rods 10 being inserted in apertures 13 in the ribs, and fixing nuts 14 applied.
Patent GB-319217-A (GB)
Title: Improvements in apparatus for passing electric currents through gases, and regulating the same
IPC: B03C3/12
Filed: 1929-09-17
Abstract: 319,217. Brion, G. G. A., and Krutzsch, A. J. Sept. 17, 1928, [Convention date]. Gases, treating electrically.-The ionization of gases through which electric discharges are to be passed for gas purification is effected by the application of a potential separate from that which causes the translation of the carriers of the electric charges in the gas and producing a field perpendicular thereto. The ionization may be produced by an alternating current of high voltage supplied to electrodes i and the current effecting the translation or the working current bv a low direct electromotive force supplied to plate electrodes p. The ionizing electrodes i need not be bare but may be coated with insulating material as shown at e. According to the Specification as open to inspection under Sect. 91 (3) (a) the lower electrode when used as the separating electrode may be in the form of a screen through which the dust falls into receptacles. This subject-matter does not appear in the Specification as accepted.
Patent GB-733652-A (GB)
Title: Improvements in strainers
IPC: B01D39/10
Filed: 1952-11-10
Abstract: 733,652. Making gratings &c. HOPKINSONS, Ltd., and BROWN, R. L. Aug. 28, 1953 [Nov. 10, 1952], No. 28235/52. Class 83 (2). A strainer for a high-pressure steam plant comprises at least one metal plate in which parallel slots a, b, Fig. 1, at right angles to each other are milled on opposite sides to a sufficient depth to intersect and form holes d. A cylindrical straining unit is formed from two such plates g bent to semi-cylinders and welded together at the ends. The units are braced by welded cross-struts e and have welded lugs h for lifting tackle.
Patent GB-914964-A (GB)
Title: Improvements relating to electronic counters
Inventor: MCLAREN RONALD ROBERT
IPC: H03K23/00
Filed: 1959-08-19
Abstract: 914,964. Transistor pulse circuits. FERRANTI Ltd. Aug. 10, 1960 [Aug. 19, 1959], No. 28275/59. Class 40 (6). [Also in Group XIX] In a reversible counter comprising a series of cascaded decades, each decade comprises a ring of ten bi-stable transistor stages, only one of which is " on " at any one time, means being provided for indicating when a stage is on. A transfer gate and re-shaping circuit are provided between the successive pairs of decades of the counter. Fig. 1 shows a bi-stable stage comprising transistors T1, T2, the transistor T1 being normally conducting and the transistor T2 being normally non-conducting. A pulse on a lead 22 reverses the stage, conduction through the transistor T2 rendering a transistor T3 conductive to illuminate a lamp 14. The stage is switched off by a pulse from a line A applied over lead 20 to the base of the transistor T1. Fig. 4 shows the transfer gate 41 of the N decade connected to a reshaping circuit 42 for the N+1 decade. The gate 41 comprises a transistor 55 which is normally conducting but which is cut-off by a pulse on a line 43 when a line Q is at a relatively high potential (additive counting) or by a pulse on a line 44 when a line P is a relatively high potential (subtractive counting), the lines P, Q alternatively carrying a high potential. When the transistor 55 is cut-off, the next pulse on a line C for the stage N which is supplied with the pulses counted by the stage N, passes over an output 60 to the reshaping circuit 42. The reshaping circuit 42 comprises a monostable multivibrator triggered to its unstable state by each pulse arriving over the lead 60. A pulse on the lead 60 renders a transistor 71 conductive to cut-off a transistor 73. Output pulses are thereby initiated from a transformer 83 over a lead A for the N+1 decade and from the collector of the transistor 73 over a lead C for the N+1 decade. The length of the output pulse is determined by an RC network 92, 93. As the stage commences to revert to its stable state, a diode 94 conducts to accelerate the cut-off of the transistor 71.
Patent GB-790077-A (GB)
Title: Improvements in or relating to textile drafting frames
Inventor: LORENZ HENRY
IPC: D01H5/56
Filed: 1955-10-04
Abstract: 790,077. Mounting rollers in textile machines. VEB SPINNEREIMASCHINENBAU KARL-MARX-STADT. Oct. 4, 1955, No. 28299/55. Class 120(2) [Also in Group XXXIV] A guide 9 for location between the bearing carriage 8 and roller stand 2 of the bottom roller assembly of drafting frames comprises a strip of sheet metal or other material the longitudinal edges of which have projections 10, 11, preferably formed by bending the strip, extending in opposite directions at right angles to the plane of the strip so as to be engageable with surfaces 6, 7 of the bearing carriage and 3, 4 of the roller stand respectively when located therebetween.
Patent GB-602134-A (GB)
Title: Combination lock with push buttons
IPC: E05B37/16
Filed: 1945-10-26
Abstract: 602,134. Permutation locks. KETNER, L. P. G. Oct. 26, 1945, No. 28344. Convention date, Dec. 18, 1943. [Class 44] In a permutation lock in which a number of axially movable rods are set by means of pushbuttons 6 so that pins 7 are selectively placed in positions allowing downward movement of a block 2 by reason of the alignment of each pin 7 with a hole 9 in the corresponding plate 5 of a series of plates inserted into the block 2, a locking plate 10 provided with holes 15 corresponding to every position of every pin 7 is resiliently mounted between the block 2 and the pins 7. The initial downward movement of the block 2 in the action of unlocking will thus depress the plate 10 through the springs 12, and the pins 7 will be engaged in some of the holes 15 and so prevent further movement of the push-buttons 6, thus rendering abortive any attempt to unlock by feeling for the entry of the pins 7 into the holes 9. As a further measure of security, flanges 14 on the plate 10 engage grooves 16 on the push-buttons. When the push-buttons and pins are correctly set, complete depression of the block 2 to unlock the lock is possible as the pins enter the holes 9.
Patent GB-1454925-A (GB)
Title: Floculation of gelatinous sludge
IPC: C02F1/52
Filed: 1974-06-26
Abstract: 1454925 Flocculation of gelatinous sludge GEC DIESELS Ltd 23 May 1975 [26 June 1974] 28371/74 Heading C1C A process for the treatment of gelatinous aluminium or iron sludge (e.g. as produced in water purification processes), prior to filtration, includes the steps of first mixing an aqeuous solution of a polyelectrolyte with the sludge and subsequently adding an aqueous suspension of calcium hydroxide to the sludge-polyelectrolyte mixture. These additions of the flocculating agents must be in the order given above. The proportion of solid polyelectrolyte used is from 0À4 to 1À0% by weight of the weight of sludge solids. The solid calcium hydroxide is from 100 to 300% on the same basis. After such treatment the sludge can be readily filtered through a conventional filter cloth.