baber/WOPTO huggingface dataset:
Patent GB-732214-A (GB)
Title: Improvements in and relating to dial devices for scales or the like for disengaging and automatically restoring the pointer to a predetermined position
IPC: G01G23/14
Filed: 1953-10-14
Abstract: 732,214. Weighing apparatus. SOC. PER AZIONI ATOMA. Oct, 14, 1953 [Oct. 14, 1952], No. 28354/53. Class 143. The invention relates to a specific arrangement of mechanically clutching a pointer to a rotating member to obtain taring. When an empty container is placed on the scale pan, the shaft 10, Fig. 2 rotates, thus rotating pointer 16, Figs. 1 and 2, over a fixed scale 20, and with a scale 24 which is rigid with shaft 10. Lever 66, Fig. 4, is now depressed, and through the pivoted link 64 causes lever 60 to move downwards about pivot 62, so that the jaws 56 press arms 46 together, the tips 42, Figs. 2, 3 closing to move disc 38 in the direction of arrow Z, Fig. 2, thus relieving the pressure on springs 30 and de-coupling the pointer from shaft 10. Arms 44, Fig. 3, are coupled by compression springs 45 to arms 50 which are held apart by springs 55, so that as arms 44 close, arms 50 also close, their tips 54, Fig. 2, gripping disc 34 keyed to shaft 10 and thus preventing shaft 10 from rotating. Further depression of lever 66 now causes link 72, Fig. 4, to engage a pin 75 on lever 76 which moves downwards about pivot 78; the end 82 of lever 76 is thus depressed to engage a cam 26 rigid with the pointer 16 and thus restore the cam and pointer to the original position, the dial 24 remaining stationary in the position corresponding to the weight of the empty container. Lever 66 is now released, and the empty container is filled or replaced by a filled one; the pointer 16 then indicates the net weight on scale 20 and the tare weight on scale 24.
Patent GB-1467450-A (GB)
Title: Rudder blade
IPC: B63H25/38
Filed: 1974-06-26
Abstract: 1467450 Rudders R WASENIUS 26 June 1974 [26 June 1973] 28368/74 Heading B7V A rudder, e.g. for a planing boat, is arranged to lift automatically above a predetermined speed or throttle setting to reduce the steering effect and the hydrodynamic load on the rudder. The rudder 1 is vertically slidable along two vertical guide rods 3 fixed by brackets 5 to an outboard drive, so that the rudder pivots with the drive structure. Inclined vanes 2 generate lift so that the rudder rises up the guides above a predetermined speed. The rudder is then kept in the raised position by a leaf spring 11 carrying a pin which engages a detent in one of the rods 3. The pin is released by water striking the leaf spring 11 as the boat slows down and settles in the water. In an alternative embodiment, the rudder is raised automatically when the engine throttle is opened beyond a predetermined position.
Patent GB-157609-A (GB)
Title: Improvements in centrifugal casting machines
IPC: B22D13/10
Filed: 1919-11-17
Abstract: 157,609. Stokes, F. W., and Hurst, J. E. Nov. 17, 1919. Casting-machines.-In a centrifugal casting- mschine, conduction of heat from the mould b to the face-plate a is reduced by separating the members a, b by lugs h on the mould or by a perforated extension f.
Patent GB-668217-A (GB)
Title: Improvements in or relating to fibrous structures and the production thereof
IPC: D01G25/00
Filed: 1949-11-07
Abstract: 668,217. Lap-forming apparatus. DICK CO., A. B. Nov. 7, 1949, No. 28503/49. Class 120(i) [Also in Group VIII] A felted sheet or lap is formed by collecting successively on a foraminous screen, fibres entrained in separate gas streams through which the screen passes. The fibres are deposited in layers each of which may be laid down on a screen 35 by apparatuses 10, 48, 50 substantially as described in Specification 668,216. The layers may be of differing quality fibres and differing thickness. They may be allowed to interfelt, the upper surface of each layer being roughened, if desired by napping rolls 62, or may be separated by adhesive, resinous or asphalt layers sprayed on by nozzles such as 70. Each layer may be smoothed by rolls such as 65, 66 and the formed sheet may have further layers 58, 60 of paper or other fibrous sheet, coated on the inside with adhesive or barrier material, secured to it after consolidation by rolls 36, 55. Dry or wet binder may be incorporated in the fibres prior to deposition on the screen 35 as by a screw feed device 73 for dry material or a nozzle 71 for wet. When a heavy uniform lap is required, a number of felting heads may be incorporated in a single air circulation system, Fig. 9, the lap being collected on a foraminous cylinder 92 and drawn off by a conveyer 98.
Patent GB-391368-A (GB)
Title: Improvements in jib-cranes and like hoisting apparatus with variable reach
IPC: B66C23/10
Filed: 1932-10-13
Abstract: 391,368. Jib cranes. SOC. ANON. DES ETABLISSEMENTS L. PERBAL, 104, Rue de Paris, Vanves, Seine, France. Oct. 13, 1932, No. 28579. Convention date, Oct. 27, 1931. [Class 78 (iv).] The jib is made in two parts J, J<1> hinged together at B, and a tie-rope is anchored to a sector G fixed on the mast M and to a sector F rigid with the outer arm J of the jib, so that in luffing the tie unwraps from one sector and wraps on the other and the outer end A of the jib moves in a horizontal path. As shown, the two parts of the jib are of equal length and the radius of the sector F is half that of the sector G. Luffing is effected by a rope K connected to the outer section of the jib, and passing round a sheave O suspended from the hinge B and a sheave S on the mast or on the section J<1> of the jib. The dead weight of the jib is balanced by a weight P. The circular sector F, G may be replaced by other curved sectors or by sprocket wheels or sectors connected by a chain.
Patent GB-989244-A (GB)
Title: An improved method for the sharpening or re-sharpening of integral tooth profiled milling cutters
IPC: B24B3/08
Filed: 1961-08-08
Abstract: 989,244. Grinding; milling cutters. F. RIEBEL. Aug. 8, 1961 [Aug. 8, 1960], No. 28634/61. Headings B3D and B3K. A method of sharpening or re-sharpening integral-tooth profiled cutters comprises effecting a plunge feed between a grinding wheel having a profile which is the complement of the cutting edge of the cutter and the back or relief surface of each tooth. The plunge feed of the grinding wheel 22, Fig. 3, into the cutter 21 forms a concave surface AGHC on the cutter tooth. The diameter of the grinding wheel is preferably chosen to be a maximum which will grind the tooth A without touching the succeeding tooth R. The grinding wheel may be mounted on a swinging arm having its pivot situated between the points 30, 32 and 33, 35 on a circle 29, Fig. 2. At the positions 31, 34 the swing of the grinding-wheel will result in a plunge feed of the grinding-wheel into the cutter tooth, while with the pivot at any of the positions 30, 32, 33 and 34 the grinding-wheel will move laterally into the tooth to form the concave surface. The Specification includes formulae for determining the depth BC, Fig. 4a-4d, of the profile of the grinding-wheel necessary to form the depth AC of the profile of the tooth to produce workpieces having a profile depth AD. The profile of the grinding-wheel may be formed by a crushing roller or a diamond moved by a pantograph engaging a template. The triangle RKI, Fig. 5, represents an amount of wear of the tooth which may then be resharpened to reduce the profile of the tooth from AGHC to A 1 G 1 H 1 C 1 . Re-sharpening of the tooth can be repeated until the profile has the shape AnGnHnCn.
Patent GB-1335865-A (GB)
Title: Device for synchronizing dog clutches
IPC: F16D23/04
Filed: 1971-06-18
Abstract: 1335865 Positive clutches TATRA NARODNI PODNIK 18 June 1971 [22 June 1970] 28742/71 Heading F2C A baulked, friction synchronized positive clutch for a change speed gear has means to disengage synchronizing rings 5, 6 from cooperating friction surfaces on gears 20, 19 in both the clutch engaged and disengaged conditions. The synchronizing rings 5, 6 on opposite sides of a hub 7 are respectively connected to alternate thrust members 1 by projections 2 on the thrust members engaging grooves 3, 4 in the synchronizing rings. The thrust members 1 have radial bores 8 housing spring pressed balls 10 engageable with recesses 11, 12, 13 in an axially slidable clutch sleeve 14. The bores 8 are axially offset by a distance A from bores 21 in the hub 7 which house the other ends of the springs 9. The bores 8 in alternate thrust member 1 are axially offset in opposite direction. The recesses 11, 12, 13 in the sleeve 14 adjacent alternate thrust members are a mirror image of the recesses shown. Operation.-Initial rightward axial movement of the clutch sleeve 14 acts through the ball 10 and thrust member 1 to move the synchronizing ring 5 into engagement with the friction surface on the gear 20. Further movement of the sleeve 14 is baulked until synchronism is obtained. On synchronism the sleeve 14 completes its rightward movement for clutch engagement and the ball 10 moves into the recess 13. The inclined portion of the recess 13 acts through the ball 10 and thrust member 1 to move the synchronizing ring 5 out of frictional engagement with a gear 20 whilst the clutch is engaged. During clutch disengagement the synchronizing ring 5 remains out of frictional engagement with a gear 20. During leftward movement of the clutch sleeve 14 the alternate thrust members 1 provide a similar action to the above on the synchronizing ring 6. When the clutch sleeve 14 is engaged with the gear 19 the inclined portion of the recess 12 acts through the ball 10 and thrust member 1 to hold the synchronizing ring 5 out of engagement with the gear 20.
Patent GB-834902-A (GB)
Title: Improvements relating to electric contact brush assembly
IPC: H01R39/41
Filed: 1956-09-21
Abstract: 834,902. Wire terminals. GENERAL ELECTRIC CO. Sept. 21, 1956 [Sept. 22, 1955], No. 28942/56. Class 38 (1). [Also in Group XXXV] In an electric contact brush assembly, for use e.g. in a dynamo-electric machine, comprising a spring 16 compressed between a contact brush 10 and a terminal member 12, and a flexible electrical conductor 14 secured at one end to the brush 10, the terminal member 12 comprises a portion 20 to which the other end of the conductor 14 is secured by pressure, an opening 30 which receives a portion 15 of the conductor when the brush assembly is fully assembled, and a slot 32 extending from the opening 30 to and through an edge of the terminal member which slot permits passage of the portion 15 of the conductor to the opening 30 during assembly, Fig. 5, of the brush assembly. The securing portion 20 comprises two tabs which are crimped about the conductor end, and the member 12 has a raised portion 22 to seat one end of the spring 16 and an opening 24 in a flange 28 for connection of a lead wire not shown.
Patent GB-504897-A (GB)
Title: Improvements in or relating to tool handles
IPC: B25G3/02
Filed: 1938-10-06
Abstract: 504,897. Handles. CHATWIN, J. (Stahlwerke Bruninghaus Akt.-Ges.) Oct. 6, 1938, No. 28953. [Class 61 (i)] A steel tubular handle 4 to be secured in the socket 2 of a fork, spade, &c. 1 is closed at the end by a wooden plug 5 with end cap 6 and is fixed in the socket 2 by wood screws 3 passing through holes drilled in the socket 2 and handle 4 and screwed into the wooden plug 5. The cap 6 preferably comprises an inner cap 7 on the end of the plug 5 and an outer cap 8 shorter than the cap 7 so that the projecting end 9 of the inner cap extends beyond the line of contact of the outer cap 8 with the end of the handle 4 thus preventing moisture penetrating into the handle. The one piece cap 6, Fig. 4, has a reduced end 10 to enter the handle 4, and provide a shoulder engaging the end of the handle. The outer end of the handle may have a similar closure.
Patent GB-925078-A (GB)
Title: Improved unsaturated polyester resins
Inventor: EVANS EDWARD MICHAEL
IPC: C08G63/553
Filed: 1959-08-25
Abstract: Unsaturated polyesters of low acid number and good colour are made by condensing an a -unsaturated, a ,b -dicarboxylic acid or anhydride with excess of a glycol until the acid number of the reaction mixture is 170-50, adding between about 0,3 and 0,4 moles of dicyclopentadiene per mole of the acid or anhydride to the reaction mixture and then heating the reaction mixture at 180 DEG -210 DEG C. until a product having an acid number of below 30 is produced. Condensation may be effected in the presence of hydroquinone. Specified acids are maleic, fumaric, itaconic and mesaconic acids and specified glycols are ethylene and the propylene glycols.  The resulting polyesters may be mixed with styrene and hydroquinone and later cured by catalysts and promoters.  Specification 721,249 is referred to.
Patent GB-1520596-A (GB)
Title: Switch for light
IPC: H01H36/00
Filed: 1976-07-12
Abstract: 1520596 Switch for light SIEMENS AG 12 July 1976 [14 July 1975] 28972/76 Heading G2J Two optic fibres 2 are arranged so that they can be aligned to convey light across the junction between the fibres, or as shown to interrupt transmission. As shown the fibres are in a sealed enclosure 1 and are operated magnetically like a reed switch and for this purpose magnetic sleeves 3 are provided.
Patent GB-227961-A (GB)
Title: Improvements in and relating to hinges
IPC: E05D15/28
Filed: 1923-11-17
Abstract: 227,961. Parkin, W. Nov. 17, 1923. Double and multiple hinges.-In hinges of the kind in which flaps a, b are provided for attachment to the frame and window respectively, and in which a cranked intermediate flap c is also provided for securing it in a detachable manner to the window to allow the window to be swung about either pivot e, f, so that it can be cleaned readily on both sides, the member c has a slot h through which the head of a stud on the window can be passed when it is required to swing the window about the pivot f. When the head of the stud is turned across the slot the window is free to swing about the pivot e. The hinge plates are also of a uniform width from end to end and the hinge sockets are formed by rolling over the ends of the plate members. The hinges are also stated to be applicable for hinging doors, gates, and other articles. Reference has been directed by the Comptroller to Specifications 16812/94, 19166/08 and 6146/11.
Patent GB-466252-A (GB)
Title: Improvements in and relating to the regulation of internal combustion engines
IPC: F02D9/00
Filed: 1936-10-26
Abstract: 466,252. Fluid - actuated valves. SCHIMANEK, E. Oct. 26, 1936, No. 29073. Convention date, Oct. 26, 1935. [Class 135] [Also in Group XXVII] A method of maintaining a constant gaseous or liquid pressure independent of the surrounding atmospheric pressure, for the regulation of internal - combustion engines, involves the use of a differential piston or diaphragm, the pressure prevailing under one of the smaller effective pressure surfaces of which is kept constant by subjecting the other two pressure surfaces to two different pressures which, though varying with atmospheric pressure, always bear a constant ratio to each other, and by marking the areas of the said two pressure surfaces to the same ratio to each other, but inversely. Fig. 1 shows a differential piston 1 in_which the pressures of a constant ratio are made to act on surfaces 14, 15 so as to maintain a constant pressure in the space 7, which depends on the force of a spring 9 acting on the piston. When the pressure in the space 7 falls too low, the piston is moved down to admit further pressure at 12, and when the pressure is too high, the piston moves upwards to vent it at 13. The constant-ratio pressures admitted at 4 and 6 are obtained from the widest section 17 and the narrowest section 18 of a double Venturi device 16, 19 in the induction pipe, or in a byepass on the compressor. In a modification differential diaphragms are used.
Patent GB-460797-A (GB)
Title: Improvements in laminated springs
IPC: F16F1/20
Filed: 1935-10-22
Abstract: 460,797. Laminated springs. WOODHEAD & SONS, Ltd., J., and SANDERS, T. H. Oct. 22, 1935, No. 29080. [Class 108 (iii)] In a laminated spring direct interplate friction is eliminated by means of spacing devices comprising wire insertions such as lengths of wire or wire frames arranged longitudinally between the spring plates. As shown in Fig. 3, grooves a<1> are formed in the plates a to receive longitudinally-expending wires b, endwise movement of which is prevented by turning the ends into holes a<2>, Fig. 7, or by bending back the ends over the ends of the plates a. In another construction, Fig. 5, fiat-section wire frames b in one or two pieces are used, lateral displacement being prevented bv the usual spring clips and longitudinal displacement by cranking the ends b<1>, Fig. 10, to engage holes a<2> in the plates, or by bending the ends to engage smaller holes a<3>, Fig. 11, in the plates, or as shown in Fig. 12, by forming one end of the wire to engage the usual centre-bolt d of the spring. The wire may be of bright drawn steel of small section to offer little resistance to flexing of the spring or of mild steel or non-ferrous material of relatively large diameter to resist flexing.
Patent GB-806206-A (GB)
Title: Combustion apparatus for jet-propulsion engines, gas turbines, or other prime movers
Inventor: JACKSON SQUIRE RONALD
IPC: F23R3/04
Filed: 1955-10-14
Abstract: 806,206. Generating combustion products under pressure. LUCAS (INDUSTRIES) Ltd., J. Jan. 10, 1957 [Oct. 14, 1955], No. 29291/55. Addition to 741,488. Class 51 (1). In an annular, air-jacketed type of combustion apparatus for a gas turbine engine or a jet propulsion engine comprising an annular flame tube e disposed within an annular air casing, an annular assembly of air passages a, b is provided, the passages leading alternately to the outer and inner air spaces c and d radially outside and within the flame tube respectively. Passages f are provided leading to the interior of the flame tube either from the passages a leading to the outer air space c or, as shown, from the passages b leading to the inner air space d.
Patent GB-791856-A (GB)
Title: Improvements in or relating to electrical signalling systems particularly telephone or like systems
Inventor: MANN VICTOR EDMUND
IPC: H04Q3/42
Filed: 1956-11-19
Abstract: 791,856. Automatic exchange systems. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Nov. 8, 1955 [Nov. 19, 1954], No. 29315/57. Divided out of 791,855. Drawings to Specification. Class 40 (4). A magnetic drum stores impulses in a position which is the same for all the various trains of impulses on a line and subsequently transfers the impulses to a storage position characteristic of the train of impulses concerned. The description and drawings are also contained in Specification 791,855, but the claims differ. Specifications 717,688, 717,689 and 717,690 also are referred to.
Patent GB-1470738-A (GB)
Title: Lubricant composition
IPC: C10M141/10
Filed: 1975-07-11
Abstract: 1470738 Lubricants; overbased materials CHEVRON RESEARCH CO 11 July 1975 [11 July 1974 11 Sept 1974 4 June 1975] 29346/75 Headings C4X and C5F [Also in Division C1] An extreme pressure lubricant comprises an oil of lubricating viscosity containing from 1 to 60 wt. per cent of a hydrated potassium borate additive of mean particle size less than 1 micron with a boron to potassium ratio of 2À5 to 4À5 : 1. The composition may also contain an oil soluble alkali or alkaline earth metal sulphonate dispersant, e.g. calcium petroleum sulphonate, and an oil soluble succinimide dispersant preferably in the amounts 0À2 to 5 wt. per cent of the sulphonate and 0À01 to 2 wt. per cent of the succinimide. An antiwear agent may also be added to the lubricant composition and is selected from a zinc dihydrocarbyl dithiophosphate with 4 to 20 carbons in each hydrocarbyl group or C 1  to C 20  esters, amides or amine salts of a dihydrocarbyl dithiophosphoric acid having from 4 to 20 carbons in each hydrocarbyl group or mixtures thereof.
Patent GB-906990-A (GB)
Title: Switch-control mechanism
IPC: H01H19/62
Filed: 1959-08-31
Abstract: 906,990. Cam-operated switches; momentary contact switches; retractive switches. TELEMECANIQUE ELECTRIQUE. Aug. 31, 1959 [Sept. 11, 1958], No. 29667/59. Class 38 (5). An adaptable switch operated by an arm 13 has a cam 8 with e.g. four differing configurations, each of which can be positioned to control a micro-switch 2 via push-rod 4. The second cam 17 is reversible and engages rollers 16 fixed to the cam-shaft 21 such that the switch returns to a central position or alternatively to one of the two extreme positions in accordance with the position of the cam. By this means a large variety of operating conditions can be obtained.
Patent GB-1188027-A (GB)
Title: A Method of Arc Welding with Alternating Current.
Inventor: POTAPIEVSKY ARKADY GRIGORIEVIC
IPC: B23K9/09
Filed: 1967-06-28
Abstract: 1,188,027. Welding by fusion. ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT ELEKTROSVARKI IMENI E.O. PATONA. 28 June, 1967, No. 29747/67. Heading B3R. [Also in Division H2] A method of alternating current arc welding comprises the superimposition of pulses of current B of the same polarity as the arc current at the ends of the half cycles A of the arc current i. If desired the pulses of current are superimposed on the negative half waves of the arc current; furthermore, additional current pulses may be superimposed on the arc current either at the beginning or at the middle of the half waves or both. Thus the stability of the arc is enhanced and the transfer of metal controlled. Arc current to an electrode 5 and workpiece 6 is provided from an A.C. source 1 by way of a transformer 3 and a variable inductor 4. Current pulses are provided by a circuit which includes a capacitor 10 charged by way of a diode 9 from the secondary winding 14 of a transformer 8. The pulses superimposed on the arc current are provided by discharging the capacitor 10 across the arc 7, the discharge being effected by triggering a controlled rectifier 11 at the appropriate time or times, the triggering impulses being provided by a phase shifting circuit which includes the components 15-22. A switch 23 is provided to disable the phase shifting circuit. The welding may be automatic or semiautomatic using consumable or non-consumable electrodes. Shielding gas may include argon (e.g. for stainless steel) and carbon dioxide.
Patent GB-1110796-A (GB)
Title: Improvements in and relating to sound reproducing apparatus
Inventor: BELLIS FREDERICK VICTOR
IPC: G11B27/32
Filed: 1964-07-24
Abstract: 1,110,796. Magnetic recording and playback. CLARKE & SMITH MANUFACTURING CO. Ltd. 26 July, 1965 [24 July, 1964], No. 29794/64. Heading G5R. A magnetic tape record, e.g. a " talking book " is provided with a number of parallel spaced recital signal tracks, and an indexing track disposed between two adjacent recital signal tracks in which are recorded recital signals and indexing signals respectively. The signals are so recorded that, in playback, the recital signals are intelligible when the tape is fed at normal playback speed, and the indexing signals are intelligible when it is fed at a higher spooling speed. The signals may be recorded on to the tape from a master tape fed at different speeds or by directly recording on to the tape at different recording speeds. The recording may subsequently be transferred to a copy tape by a highspeed copying process. Track changing, Figs. 2, 3.-The head 27 is slidably moved along posts 29, 30 by means of a pin engaging a helical cam groove 35 on a rotating cam 34. On inserting a tape cassette rod 50 is depressed to rotate a toothed wheel 40 which turns cam 34 until the follower pin engages a longitudinal slot in the cam wheel. Head 27 is then moved to its upper limit under the action of a spring 34a to the start of the first recital signal track. At the end of each track a signal actuates an arm 70 which engages with tooth wheel 40 to step the head on to the next recital signal track. In order to allow movement of the head on to an indexing signal track, the slot 35 is made sufficiently wide in relation to its engaging pin (36), Fig. 4 (not shown), for the head to be depressed a small distance down guides 29, 30. In this position, the pin engages the opposite side of the groove, and it is arranged that the head will then read from the index track.