baber/WOPTO huggingface dataset:
Patent GB-617686-A (GB)
Title: Improvements in and relating to snap action electric switches
IPC: H01H23/16
Filed: 1946-10-16
Abstract: 617,686. Tumbler switches. CONTACTUM, Ltd., and BOLLINGHAUS, W. Oct. 16, 1946, No. 30791. [Class 38 (v)] In a tumbler switch the dolly 16 and contactcarrying member 18 are pivoted at 17, 19 and are coupled with lost motion by a pin 20 and slot 18b and also by a dead-centre spring 21 on a link 22, one end of which is recessed at 22d to engage the pin 20. The member 18 is U-shaped and its base is apertured to receive the link 22 in a hollow rivet 23 which secures an insulated bridging contact 11. The end of the dolly 16 has a pair of mutually perpendicular slots receiving respectively the enlarged end of the link 22 and the pin 20. The pivots 17, 19 are carried by a U-shaped member 14 riveted to the switch base 10, on which insulated fixed contacts 12 are mounted. Shoulders 18a on the member 18 limit its movement by engaging the member 14.
Patent GB-1320031-A (GB)
Title: Process for the manufacture of imidazole derivatives
IPC: C07D233/54
Filed: 1970-06-25
Abstract: 1320031 Nitro-imidazole derivatives F HOFFMANN-LA ROCHE & CO AG 25 June 1970 [26 June 1969] 30795/70 Heading C2C Novel compounds of Formula I (in which R 1  is OH or CH 3 O and R 2  is CH 3 , or R 1  and R 2  together are the group =CH 2 ), are prepared by reacting a compound of Formula II with sodium borohydride at - 25 C. to 60 C. and, if desired, treating a compound I thus obtained in which R 1  is OH or CH 3 O and R 2  is CH 3 , so as to remove a molecule of water therefrom. Compounds II are prepared by reacting an aldehyde of Formula III (in which R 1  is OH or CH 3 O) with glyoxal and ammonia to form a compound of Formula IV reacting this with an iodinating agent to form a compound of Formula V and reacting this with an iodinating agent and optionally removing a molecule of water or methanol from the product obtained. Alpha-methoxy-isobutyraldehyde is prepared by reacting isobutyraldehyde with bromine and methanol to form alpha-bromoisobutyraldehyde dimethyl acetal and reacting this with tartaric acid and sodium carbonate. Compounds of Formula VI  are prepared by methylation of compounds I.
Patent GB-1451119-A (GB)
Title: Apparatus for measuring the weight per unit area of consti tuents of a tyre fabric
IPC: G01G17/02
Filed: 1974-07-11
Abstract: 1451119 Measuring weight per unit area MEASUREX CORP 11 July 1974 [12 July 1973] 30834/74 Heading G1A The weight per unit area of manufactured sheet fabric comprising two layers made of material of different radiation absorption properties, is measured by using a first radiation gauge more sensitive to one material and a second gauge more sensitive to the other material to develop signals which are combined to give the required measurement.  The particular application described is measurement of tire fabric comprising a steel cord which is covered on both sides with rubber. The embodiment described comprises two transmission gauges, one, for measuring the absorption of radiation by the rubber, comprising a beta-gauge, the source 40 being e.g. strontium 90 and the detector 44 an ionization chamber or scintillation counter. The other, for measuring metal absorption, comprises a gamma or x-ray gauge utilizing a source 46, e.g. an x-ray generator or an isotope such as Americum 241 and the detector 42. Calibration curves are  constructed using known samples of pure rubber and finished fabric for both gauges. The signals from the gauges are fed to a computer which calculates the total weight per unit area of the unknown finished fabric according to the Beer Lambert absorption law and the calibration curves. From this, the individual weights for rubber and steel may then be obtained. Measurements can be made at three zones across the width, and the thickness of rubber applied  varied by feedback control of hydraulic screw-down equipment associated with the calendar rolls. For this purpose the gauges scan across the sheet.
Patent GB-1010694-A (GB)
Title: Improvements in or relating to food cooking ovens
IPC: A47J37/04
Filed: 1962-08-13
Abstract: 1,010,694. Supporting food during cooking. G. BELLO. Aug. 13, 1962 [Feb. 12, 1962; Feb. 14, 1962], No. 30903/62. Heading A4D. [Also in Division F4] Heating panel 4 is secured in one side of a rotatably mounted box 2 which has three alternative positions of use. With the panel 4 in a vertical plane, food may be supported between sinuous wires 14 in a rotatable frame 11<SP>1</SP>,11<SP>11</SP>. The frame parts are hinged together at 12 and held in the closed position by clips 13.
Patent GB-365169-A (GB)
Title: Improvements in or relating to machines controlled by statistical-record-cards
Filed: 1930-10-16
Abstract: 365,169. Statistical machines. BRITISH TABULATING MACHINE CO., Ltd., Victoria House, Vernon Place, Southampton Row, London.-(Assignees of Peirce, J. R. ; 33, Riverside Drive, New York, U.S.A.) Oct. 16, 1930, No. 31033. Convention date, Oct. 17, 1929. [Class 106 (i).] In a record-card-controlled statistical machine having translating mechanism of the kind described in Specification 297,800, [Class 106 (i), Calculating &c.], the commutator brushes being movable under the control of the card-reading from one position to another on the commutator, each of these brushes is moved circumferentially of the commutator. The differential impulses thus derived from the code cards are used to throw in the usual electromagnetic clutches of Hollerith counters. The cards 1 are fed to the sensing pins 69, by a slot 5, rollers 25 .. 28 and a picker 6 carried by a member 7 sliding in grooves 8 under the influence of toothed sector 9 and rock-shaft 10. A cam-operated gate 31 holds the card for reading. When a sensing pin penetrates a hole a block 89 on it, through its pin 90, rocks a lever 91a about its pivot 92 so that the commutator brush 96a carried thereon, is moved from one position to another circumferentially of a commutator 97. For each card column the four sensing pins control four levers 91a. .91d, Fig. 10, carrying four brushes 96a,.. 96d. These brushes coact in pairs with the opposite sides of two commutators 97, 97a as shown in Figs. 5 and 10. After the sensing pins have advanced, latch members 100 are rocked from the position of Fig. 1 to that of Fig. 10, so that levers, such as 91a, 91d, which have been moved are locked over when the pins 69 return. Each commutator 97 or 97a has two series of contact pieces 132, one series connected to a common strip 134 and the other series to a common strip 133. Fig. 5 shows a developed view of the two commutator circumferences. According to the code perforations read in the column several of brushes 96a .. 96d will have been shiftedin Fig. 5, brushes 96a and 96d, so moved, correspond to numeral " 6." Thus, not until the sixth reading point of the cycle do the four brushes touch contact pieces simultaneously to close a series circuit through the brushes and wire 135, to actuate the counter magnet. In some instances the brushes will close another series circuit later, but the countermagnet, already energized by the first circuit, will have opened contacts in its own circuit for the rest of the cycle. The commutators are continuously rotated by the shafting which drives the continuously rotating clutch elements of the counters.
Patent GB-1431309-A (GB)
Title: Cleaning material from a support surface
IPC: G03G21/00
Filed: 1973-06-29
Abstract: 1431309 Cleaning electro-photographic drums XEROX CORP 29 June 1973 31043/73 Heading G2H An electro-photographic drum 11 is cleaned after image transfer by two scraper blades 21, 22. The blades are mounted in a block 24 which is preferably retracted after copying, the drum 11  being reversed a short distance just before block 24 is retracted so that any scraped developer remaining on the drum will not spread beyond the scraping position. A wiper blade 23 directs scraped off developer into a sump 25. Fig. 3 (not shown) shows a composite scraper/wiper blade. An electroluminescent strip lamp 18 floods the drum 11 after cleaning.
Patent GB-418468-A (GB)
Title: Aeroplane undercarriages
IPC: B64C25/14
Filed: 1933-11-08
Abstract: 418,468. Aircraft landing - gear. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G., and LLOYD, J., Whitley, Coventry. Nov. 8, 1933, No. 31066. [Class 4.] A retractable landing member is connected to an aeroplane by two struts hinged to one another and also pivotally mounted on the aeroplane in such manner that the pivotal axes can be brought into alignment to facilitate swinging the landing-member and struts together about the common axis. As shown, a landing-wheel 12 is carried by a pair of oleolegs 14 connected by a bridge 15 and pivoted to brackets 16 in recesses in the underside of an aircraft wing. Radius rods 17 are pivoted at their lower ends to the legs 14 and at their upper ends to a block 18 carried by a screwed spindle 19 rotatable through a chain 21 and sprocket-wheel 20 from the cockpit or elsewhere to bring the rods 17 into alignment with the legs 14 before the wheel 12 is retracted by a cable 22 from the cockpit. Hinged flaps 24 are provided for closing the major portion of the wheel recesses. The legs 14 may be pivoted to a block, in which case the wheels are swung up in a forward direction. The wheels when retracted may be housed in the fuselage, or in fairings attached to its sides.
Patent GB-207025-A (GB)
Title: Improvements in detachable soles and heels for boots and shoes
IPC: A43B13/28
Filed: 1922-11-14
Abstract: 207,025. Kaitcer, J. Nov. 14, 1922. Heels; soles.-A boot or shoe is provided with a permanent sole 8 and a detachable half-sole 2 and detachable heel 11. The half-sole 2 is provided at the toe end with a plate 3 with bentover edges adapted to engage the edge of the sole 8, and at the rear with a clinching plate 5 adapted to engage a corresponding plate 9 secured to the instep. The detachable heel is provided with a plate 12 similar to the plate 3. The half-sole and heel are additionally secured by screws 15, 16.
Patent GB-1528277-A (GB)
Title: Programmable dual-in-line header
IPC: H05K3/30
Filed: 1976-07-27
Abstract: 1528277 Component mountings AMP Inc 27 July 1976 [7 Aug 1975] 31173/76 Heading H1R In a dual-in-line header 1 having pairs of depending conductive posts 6, e.g. for reception in a pcb, strap portions 4 connecting respective posts in a pair, may be selectively severed and/or have portions removed therefrom to provide an open circuit or terminals to receive components, by means of a punching tool applied to an aperture 8a in an insulating frame 2, thus programming the header for a particular circuit function. As shown, the strap portion 4 may be severed and re-formed to provide terminals of the bifurcated or apertured type to receive components with leads or of the abutting type for leadless components. Apertures registering with the strap portion 4 are also formed in the lower surface of the frame 2.
Patent GB-1513025-A (GB)
Title: Industrial and agricultural tractors
IPC: B60J1/18
Filed: 1975-07-25
Abstract: 1513025 Windows INTERNATIONAL HARVESTER CO OF GREAT BRITAIN Ltd 25 July 1975 31201/75 Heading E1J [Also in Division B7] In a vehicle cab wherein a rear window hinged about its upper edge 24 to the cab is divided into two portions by a second horizontal hinge 25, resilient means 36 bias the window to an open or closed position when the window is opened by more than or less than a predetermined angle respectively as shown in Fig. 2. The resilient means comprise fluid filled rams 36 which are preloaded to thrust outwardly and pass "over centre" as the window is opened or closed. The lower window portion 26 is frameless and seals against a resilient strip 28, 29 around the cab edge, the lower edge of portion 26 entering a channel formed in resilient portion 29. The rams 36 may be replaced by an assembly of Belleville washers having a similar "over centre" action. Alternatively a resilient torsion spring means may be employed. When fully closed the upper and lower window portions 26, 27 could be substantially planar rather than angled as shown. The window also hinge about its upper edge to open inwardly.
Patent GB-678021-A (GB)
Title: Buffer or like energy-absorbing device
IPC: E02B3/26
Filed: 1949-12-05
Abstract: 678,021. Fenders. TURTON, G., PLATTS & CO., Ltd., and HEWITT, J. L. Dec. 4, 1950 [Dec. 5, 1949], No. 31211/49. Class 113 (i). [Also in Group XXXII] An energy absorbing device for use in a fendering system for docks, jetties, &c., comprises a torsion bar mounted parallel with a supporting surface and adjacent a pile-like impactreceiving and load-transmitting member, a transverse lever rigid with one end of the torsion bar and extending outwardly of the supporting surface at an oblique angle, to constitute a load receiving element, and means spaced from the lever to impart a resistance to twisting of the torsion bar. In the construction shown in Fig. 5, pile-like impact receiving members 17a, 17b fast at their lower ends, are in engagement with respective arms 16a, 16b at opposite ends of a torsion bar 14a. Brackets 12a, 13a, rotatably mount the bar 14a on the dock face 11a. The members 17a, 17b may engage the arms 16a, 16b to apply a pre-load to the bar 14a. Alternatively, Figs. 7, 8 (not shown), stops projecting respectively from the brackets 12a, 13a may support the arms 16a, 16b against movement in a direction opposite to that produced by the load. The extremity of each arm 16a, 16b may be formed with rollers, Figs. 1-3 (not shown), or other antifriction devices. The members 17a, 17b may be formed with a channel to locate the rollers. In the construction shown in Fig. 9, one impact-receiving member 17c is associated with the lever 16d of a torsion bar 14c journalled at 13c and 13d, and held against rotation at 12c. A further torsion bar 14d having a lever 16e, is journalled at 13c and rigidly held at 13d. The levers 16d, 16e are engaged successively by the member 17c. In either case the lever may be in keyed or splined engagement with, or welded to, its torsion bar, which may be solid or tubular. The bar may be similarly connected with the bracket where it is to be held (as at 12c in Fig. 9). Alternatively the bar may be adjustably held in the bracket by a ratchet device. Instead of bearing brackets supporting the bar, a single casing may be used. According to the Provisional Specification, the device may be .disposed vertically or in an inclined position.
Patent GB-983559-A (GB)
Title: Improvements relating to safety devices for doors or covers for pressure vessels
IPC: F16J13/02
Filed: 1962-08-15
Abstract: 983,559. Pressure-resisting doors. LEEDS & BRADFORD BOILER CO. Ltd., and H. M. H. PICKARD. Aug. 6, 1963 [Aug. 15, 1962], No. 31303/62. Heading F2P. A pressure vessel such as a kier, autoclave, tank, retort, vulcanizing pan has a safety device for arresting a forced quick opening of the door beyond a predetermined position when the door is unlocked. The device comprises a pivoted catch 2 mounted on the mouth ring 5 of the vessel and formed with a slot 6 in which can engage a stop 8 provided on an adjacent part of the door when the door is closed, the slot being formed between the ends thereof with a mouth 7 through which the stop can pass to permit complete opening of the door. The arrangement is such that when a pressure does not exist within the vessel sufficient to effect quick opening of the door, the stop coacts with the slot at one side 10 of the mouth thereof and swings the catch slowly about the pivot 3, up and down, permitting the stop to pass through the mouth of the slot and out of engagement with the catch to allow complete opening of the door, but that when a pressure exists within the vessel sufficient to effect quick opening of the door when the latter is unlocked, the influence of this pressure on the door tending to force it open quickly, results in a rapid and forceful swinging movement being imparted to the catch by the stop, whereby the catch is swung and the stop moves so quickly that the stop is unable to pass through the mouth of the catch, and the part of the slot 6b at the other side of the mouth engages the stop and so arrests further opening of the door. As shown, an arm 11 is formed so as to control the centre of gravity of the catch in relation to the axis 3, and the catch has a pressure-applying pad 12 which enables pressure to be exerted on the door sufficient to overcome the springiness of a sealing gasket between the mouth of the vessel and the door.
Patent GB-244764-A (GB)
Title: Process of manufacturing sulphuric acid
IPC: C01B17/82
Filed: 1925-12-11
Abstract: In the production of sulphuric acid from sulphur dioxide gases, using a solution of nitrosyl sulphuric acid in sulphuric acid, the sulphur dioxide is in excess of the quantity of the latter employed and the oxidation, which is effected in packed towers or enclosures is accompanied by the liberation of only small amounts of nitrogen oxides so that the content of nitrous compounds in the acid leaving an enclosure is substantially the same as that of the acid introduced into the enclosure.  The amount of water employed is restricted whereby chamber crystals are formed which dissolve in the acid liquor.  The quantity of nitrosyl sulphuric acid decomposed, instead of corresponding approximately to the quantity of sulphuric acid produced is only a fraction of this amount.  To avoid denitration the necessary water is also supplied in the form of a thin stream sent directly into a much greater volume of nitrous liquor.  Only the acid withdrawn for commerce is denitrated.  Specification 231,853 is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of Schmiedel rollers, Keller sprays or sprinklers for effecting intimate contact between the gases and circulating liquor.  This subject-matter does not appear in the Specification as accepted.
Patent GB-631303-A (GB)
Title: Improvements in methods of winding small electric machines
IPC: H02K3/12
Filed: 1947-11-26
Abstract: 631,303. Winding layouts for dynamo-electric machines. JONES, H. H., and JONES & CO. (ENGINEERS), Ltd., W. Nov. 26, 1947, No. 31372. Drawings to Specification. [Class 35] In order to facilitate winding a multipolar machine such as a H.F. alternator or two-speed A.C. motor, a coil is made of the required dimensions for winding at least four slots, and is arranged with its sides crossed over at each slot to be filled and then laid with the crossed sides in the slots. Alternatively, one side of each coil is introduced in the slots by zigzagging to and fro across the core and then the other side of the coil is treated in the same fashion on top of the first side so that the M.M.F.'s due to both sides of the coil are additive. To obtain greater flexibility of the coils, they may be subdivided into two or more thinner coils. The invention is applicable to multi-phase windings to heteropolar or homopolar machine and to the exciting windings of rotating field machines.
Patent GB-274806-A (GB)
Title: Apparatus for delivering measured quantities of liquid
IPC: B67D7/70
Filed: 1926-12-10
Abstract: 274,806. Muller, J. July 20, 1926, [Convention date]. Relief devices; measuring devices; pipes; strainers; delivery reservoirs; valves, arrangement of.-Apparatus for delivering measured quantities of lubricant &c. comprises a pump 25 which draws liquid from a reservoir A through a cock 6, lift valve 14, strainer 18, and lift valves 37, 38 in a rotatable chamber 35, and delivers it through a pipe 26 to a measuring chamber 34 fitted with a piston 48 which is operated by rack and pinion gear 44, 46. Excess liquid delivered by the pump returns from the chamber 34 through a valve 32 and pipe 31 to a cylinder 27 fitted with a spring- pressed piston 28 and open to the inlet side of the pump through a passage 24<1>. This excess returns to the pump barrel during the next suction stroke.
Patent GB-459737-A (GB)
Title: Improvements in oil packings for moving parts
IPC: F16J15/3272
Filed: 1935-11-13
Abstract: 459,737. Stuffing-box packing. FREUDENBERG GES., C., Weinheim, Baden, Germany. Nov. 13, 1935, No. 31443. Convention date, Nov. 16, 1934. [Class 122 (v)] An oil-retaining packing-ring of flexible material such as leather, leather substitutes, resin condensation products, &c., is provided with a single joint to allow it to be passed around the machine part to be packed, the joint being offset in the width and height of the packing tc prevent leakage. The packing may have any desired form and cross-section, e.g. cap-shaped or pot shaped, and may comprise one piece or a plurality of layers. Overlapping surfaces may be connected by latex, rubber adhesives, &c. The contacting, joint surfaces may have metallized or graphite coatings. In the construction shown, dished rings c, d are secured together and are split at e, h, f. In a modification, a ring of angle cross-section is housed in a built-up casing and is pressed upon by a helical spring. Expanding, angle rings may be used in the packing.
Patent GB-477726-A (GB)
Title: Improvements relating to photographic sound records and methods of producing same
IPC: G11B7/00
Filed: 1936-11-17
Abstract: 477,726. Recording photographic sound-films. BRITISH ACOUSTIC FILMS, Ltd., POULSEN, A., KOLB, O. K., PRATT, A. S., and BOSTON, D. W. Nov. 17, 1936, No. 31501. [Class 40 (ii)] A photographic sound -film of the " noiseless " type, i.e. having low mean transparent width or low mean transparency during periods of low sound intensity, but increasing in mean transparent width or mean transparency as the intensity of the sound increases, is recorded by apparatus in which the biassing device governing the mean transparent width or mean transparency is controlled by two or more circuits having different time constants so that whereas the biassing device responds rapidly to an increase in the intensity of the sound to be recorded, it responds more slowly to a decrease in sound intensity in a manner dependent on the duration and intensity of the sound immediately preceding such decrease. The Specification states that the varying sensitivity of the ear is thus compensated for, enabling an aural impression of constant low background noise to be created. A microphone 1 is connected to an amplifier 2, the output of which is connected through the lines 3 to the primary of a transformer 4 whose secondary supplies current of audio-frequency to the recorder 5. The amplifier output is applied also over lines 6 between the grid and cathode of an amplifying valve 7 biassed by a resistance 8 and condenser 9. The anode of this valve is fed from a battery 10 through the primary of a transformer 11 whose secondary has connected across it the two diodes 12, 13 forming a full-wave rectifier. The output of this rectifier is smoothed by a filter comprising resistances 14, 15 and condensers 16, 17. Two rectifiers 18, 19 connected across the secondary of the transformer 11 have their output smoothed by a filter comprising resistances 20, 21 and condensers 23, 24 and then applied through a further rectifier 31 to the anodes of the diodes 12, 13. The output from the smoothing filter comprising resistances 14, 15 and condensers 16, 17 is applied to the grid of a valve 25, bias being provided by the battery 26 shunted by the byepass condenser 27. The high-tension voltage for the valve 25 is supplied by a battery 30 and the anode current of this valve is passed through the recording device 5 to provide the necessary bias in response to the intensity of the sound being recorded. A blocking condenser 28 prevents anode current from flowing in the winding of the transformer 4. The time constant of the circuit including the diodes 12, 13 and following smoothing filter is relatively short, but the time constant of the rectifiers 18, 19 and following smoothing filter is considerably longer. According to a modification, a single fullwave rectifier 12, 13, Fig. 2, may be employed, followed by one circuit comprising a resistance 34 and condenser 35 in parallel, with a short time constant, and by a second circuit consisting of a resistance 32 and condenser 33 in series with a relatively long time constant.