baber/WOPTO huggingface dataset:
Patent GB-614420-A (GB)
Title: Improvements in and relating to a device for adjusting the time of exposure of a photographic camera
IPC: G03B43/02
Filed: 1946-02-05
Abstract: 614,420. Photographic roller-blind shutters. BAER, G. Feb. 5, 1946, No. 3673. Convention date, Feb. 23, 1945. [Class 98 (i)] An exposure-time adjusting device having an external controlling part, axial movement of which engages or disengages a coupling between the controlling part and the moving parts of the shutter, and rotation of which alters the exposure time, is characterised in that resilient action on one of the two portions of the coupling tends to keep the portions out of engagement, a locking device prevents rotation of the controlling part when the coupling is disengaged, and means are provided permitting the engagement of the coupling for one relative angular position of its parts only, this position being occupied only when the moving parts are in their set or rest positions. A knob 1, Fig. 2, constituting the controlling part, has a downwardly extending portion with an annular recess and a spindle 3 sliding in a cylinder 4 on a bracket 4a fastened to the camera wall 2. A spring 5 presses against the end of the annular recess at the other end, tending to keep the knob 1 in the inoperative position shown, in which vertical teeth 6 with sloping upper surfaces carried by the knob engage a vertical plate 7 with a sloping lower surface, preventing rotation. The lower end of the spindle 3 carries a sleeve 11 with two downwardly extending asymmetric projections, each slanted on one side for easy engagement in one position only with corresponding recesses in a plate 12. When the shutter is in the set or rest position and the knob 1 is depressed, the coupling 11, 12 is engaged and the teeth 6 and plate 7, by virtue of their sloping surfaces, permit the knob to rotate in one direction only. A wheel 13 fast with the plate 12 acts through wheels 13a, Fig. 1, upon a cam 14 frictionally mounted on a shaft and angularly adjusts the cam on its shaft. After this operation the knob is released, and its return spring moves it into its inoperative position. A wheel 15 on the shaft of the cam 14 drives one of the blinds 16, whilst the other blind is driven by a second coaxial but independently rotating wheel 15 behind the first wheel 15. When the shutter is set, pins carried by the wheels 15 engage pivoted catches to prevent the wheels from rotating. Depression of the release knob 17 releases the catch holding the first wheel 15 which operates the first blind 16 to open the shutter. After a time determined by its angular position adjusted as described above, the cam 14 releases the catch holding the second wheel 15, which then operates the second blind 16 to close the shutter. A knob 18 resets the shutter.
Patent GB-878762-A (GB)
Title: Process for separating olefines
IPC: C07C7/148
Filed: 1959-08-21
Abstract: Close boiling olefins are separated by forming the corresponding boron trialkyls, separating by distillation and recovering the olefins.  The process may be combined with that of Specification 874,507 involving isomerisation of the boron trialkyls but preferably temperatures are kept below 160 DEG C. to avoid isomerisation.  The olefins may be C4-C10 olefins, e.g. butenes.  In a preferred form the boron trialkyls are formed by reaction with triethyl borane, or other trialkyl borane, liberating ethylene and employing this ethylene to displace the olefins from the separated boron trialkyls.
Patent GB-650466-A (GB)
Title: Improved method of and apparatus for the preparation of casting moulds
IPC: B22C9/04
Filed: 1948-02-09
Abstract: 650,466. Moulding processes ; moulding- machines. REGIE NATIONALE DES USINES RENAULT. Feb. 9, 1948, No. 3734. Convention date, March 6, 1947. [Class 83 (i)] In making a mould by the " lost wax " process the mould box 2 is permeable to water and placed in a trough 7 on a vibrating table 8, a dry mixture 1 of sand and cement is then introduced into the box and about the pattern 4, water is poured into the trough and, when the mixture has become impregnated, the trough is emptied and the mould is allowed to harden. The box 2 may be of perforated stainless metal lined with porous paper and the bottom 5 of paraffin wax. The table 8 may rest on rubber blocks 10 and have a pneumatic vibrator 9.  Mould materials.-The mixture 1 may consist of quartz, sand, tridymite or burnt fire clay or bauxite, preferably screened, and aluminous cement free from iron, aluminate of iron or barium silicate. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 650,467. This subject-matter does not appear in the Specification as accepted.
Patent GB-1211036-A (GB)
Title: Telescopic crane boom
IPC: B66C23/697
Filed: 1968-01-25
Abstract: 1,211,036. Jib cranes. RUSTON-BUCYRUS Ltd. 25 Jan., 1968 [1 Feb., 1967], No. 3874/68. Heading B8B. A telescopic, cantilever mounted boom for a crane has two sections moved telescopically relative to one another by an hydraulic ram, the piston-rod of the ram being connected to one of the sections and the cylinder of the ram having its rod end connected directly to the other section and its opposite end connected to resilient suspension means. The boom 8 is pivotally mounted on a frame 2 rotatably supported on a truck chassis 3 having hydraulic outriggers 5. The boom 8 which is luffed by an hydraulic ram (not shown) comprises a foot section 12 and telescopically movable sections 13, 14, 15, and each section 12 ... 14 includes a central rectangular steel tube having at its corners angle irons extending between which are diagonal struts. A four-wheel bogie 28 mounted on the section 12 provides a rolling support for the section 13 and, similarly, a bogie 35 on the section 13 supports the section 14 which has a bogie 42 for supporting the section 15. The section 13 is moved relative to the section 12 by a ram 201 mounted beneath the boom, the piston-rod 51 of the ram being pivoted to the section 13 at 53 and the cylinder of the ram being connected to the section 12 at its rod end by trunnions 54 and at its other end by a pair of shock absorbers 56 each having an extension spring and an hydraulic damper. This construction maintains the cylinder and piston-rod in alignment. An alternative form of resilient suspension means using only one shock absorber is described. The section 14 is moved relative to the section 13 by a ram mounted inside the boom 8, the piston-rod of the ram being pivoted to the section 13 and the cylinder of the ram being connected at its rod end to the section 14 by trunnions and at its other end to a resilient suspension comprising a tubular beam carrying a pivotally mounted shock absorber and a bellcrank on which is mounted a wheel for engaging the inside of the section 15, Fig. 11 (not shown). The tubular beam also has a rubber foot for engaging the section 15. The section 15 is moved manually or by gravity relative to the section 14. In a second embodiment, Figs. 13 to 17 (not shown), a ram is mounted on one side of the boom for moving the section 13 relative to the section 12 and a second ram is mounted on the opposite side of the boom for moving the section 14 relative to the section 13. The section 15 may be moved manually or by a further ram mounted inside the boom. The piston-rod end of the second ram is pivoted to the top end of section 13 and its other end is resiliently connected to a support which is movable along a track on the section 12. In a third embodiment, Figs. 18 to 22 (not shown), the section 13 is moved relative to the section 12 by two rams mounted on opposite sides of the boom, the section 14 is moved relative to the section 13 by another ram mounted beneath the boom and the section 15 is moved relative to the section 14 by a further ram mounted inside the boom.
Patent GB-576508-A (GB)
Title: Improvements in or relating to remote control resonance relays
IPC: H01H51/32
Filed: 1944-03-02
Abstract: 576,508. Electromagnetic relays. COMPANIA PARA LA FABRICACION DE CONTADORES Y MATERIAL INDUSTRIAL, and VITEAU, P. March 2, 1944, No. 3921. [Class 38 (v)] A resonance relay comprises a vibrating reed 1 which drives a wheel 4 and when a certain speed is exceeded, weights 12, 13 move outwards against the action of a spring 16 displacing a finger 14 on a rod 17 sliding in a hollow shaft 5 fixed to the wheel 4 and bringing a contact 18 into engagement with a contact 19.
Patent GB-215817-A (GB)
Title: Improvements in and relating to means for delivering glass from a glass furnace
IPC: C03B7/086
Filed: 1923-02-09
Abstract: 215,817. McNish, A. Feb. 9, 1923. Delivering molten metal. - In an automatic feeder of the reciprocating plunger type, a reciprocating cam is used to impart the required motion to the plunger, the cam being readily removable when it is necessary to use one of a different contour. The cam consists of a curved plate or rod 16, detachably connected to a frame 16a which is reciprocated by means of a compressed air cylinder 18. The cam engages between rollers 15b on a plate 15 which is free to slide vertically in guides and is connected to a rod 11. This rod carries a jaw or tongs 9 in which the feeding plunger is gripped, so that the reciprocations of the cam 16 will cause vertical reciprocations of the feeding-plunger. The cam can be suitably shaped in order to move the plunger with a uniform or varying speed according to the shape of the charge of glass to be delivered. The rod 11 is connected to the plate 15 by means of a screw in order that the height of the plunger above the delivery outlet of the forehearth can be adjusted. Admission of air to the cylinder 18 is controlled by a timing-cylinder 17 having a piston rod 17<a> on which tappets 17<d>, 17<e>, 17<f> are secured. These tappets, in conjunction with others on the rod of the cylinder 18, operate valves in a casing 21. These valves also admit air to a cylinder 19 which operates shears 33 which are preferably of the kind described in Specification 209,221.
Patent GB-1041346-A (GB)
Title: 1,3,4-oxadiazolin-5-one derivatives and process for the preparation thereof
IPC: C07D413/06
Filed: 1964-01-30
Abstract: The invention comprises compounds of the formula <FORM:1041346/C2/1> in which R is an acyl group or an ethoxycarbonyl group, and a process for their preparation comprising reacting a compound of the formula <FORM:1041346/C2/2> with an acylating agent or a halogenated carbonic acid ester.  The acylating agent may be an aliphatic, aromatic or heterocyclic carboxylic acid or a reactive derivative thereof, e.g. acetic, propionic, butyric, valeric, caproic, lauric, palmitic, phenylacetic, cinnamic, benzoic, nicotinic, isonicotinic, thiophene-carboxylic or furoic acid or a reactive derivative thereof. The acids may contain substituents which do not take part in the reaction, e.g. a halogen atom or a nitro, alkoxy, aryloxy or acyloxy group. Preferred reactive derivatives are acid halides and acid anhydrides.  The reaction may be carried out with or without a solvent and, when an acid halide or halogenated carbonic acid ester is used, in the presence of a base.  Pharmaceutical compositions having antibacterial activity, for oral administration, comprise a compound of the invention together with a pharmaceutical carrier.
Patent GB-840247-A (GB)
Title: Improvements in or relating to an electric heater switching control mechanism
IPC: H01H37/00
Filed: 1958-02-07
Abstract: 840,247. Thermal switches; electrically released switches. WESTINGHOUSE ELECTRIC CORPORATION. Feb. 7, 1958 [Feb. 18, 1957], No. 4063/58. Class 38 (5). [Also in Group XXXV] A thermal cycling switch 12 arranged to give a higher initial rate of energy to an electric heater by means of an additional relay 14 comprises contacts 16, 17 attached to bi-metallic members 18, 24, and accelerating member 25 all arranged with their low expansion side uppermost, and heated by an element 19. The spacing of contacts 16, 17 is determined by a contour 21 of a face cam 22 moving the member 24 against the force of a conductive spring 26. A second face 46 of the cam 22 moves the relay armature 37 through member 44 against the spring 39 closing normally broken contacts 32, 33, which connects the series combination of the relay coil, cycling switch and heater across a high voltage supply. The cycling switch opening releases the relay 14 and the circuit is recompleted by closure of contact 33 to a third contact 31 which is connected to a lower voltage supply. Several configurations of the earn 22 are given to close contacts 32, 33 in one or both directions of movement, also in the off position either to hold the relay armature in a mid-position or to hold contacts 32, 33 closed.
Patent GB-247597-A (GB)
Title: Improvements relating to coupling devices for shafts rotating at different relative speeds
IPC: F16D5/00
Filed: 1926-02-13
Abstract: 247,597. Modesse, A. Feb. 14, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Driving - arrangements. - Relates to means for obtaining a periodical momentary advance and retardation of a driven shaft relatively to its driving-shaft, the momentary speed variation dying away as the shafts increase in speed, but the driven shaft receiving a gradually increasing permanent advance in relation to the driving-shaft as the speed approaches the maximum. The invention is applicable to magneto drives. In the form shown in Fig. 2, a pawl 4 turns on a pivot 3 on a plate 2 on the driving-shaft and during the greater part of each revolution in the counter-clockwise direction, the surface 6 and lug 7 on the pawl engage the periphery and notch 8 on the driven shaft 5 to effect a solid drive. A stationary rod 9 is provided in the path of a lug 10 on the pawl, so that at each revolution the lug 7 is advanced relatively to the plate 2, with a corresponding effect on the shaft 5. When the pawl has passed the rod 9, the load on the shaft 5 returns it to synchronism with the driving-shaft, the surface 6 and lug 7 resuming their driving positions. As the speed of the driving-shaft increases, the centrifugal action of the weighted end 11 of the pawl 4 causes the lug 7 and shaft 5 to advance and the lug 10 to retard so that the action of the rod 9 diminishes, but the shaft 5 is advanced throughout the revolution, until finally the lug 10 fails to strike the rod, the pawl resting against the pin 12 on the plate, which position may be maintained by a blade spring. More than one rod may be provided. The rod may be replaced by a cam and may be adjustable or may be subjected to a continuous or alternating movement for the purpose of modifying the accelerations communicated to the driven shaft. Fig. 8 shows a modification in which the shafts are interconnected by links 13, 15 connected by a pivot 14 and controlled by a weight 11. The stationary rod, strikes the linkage in the neighbourhood of the pivot 14 and by toggle-like action the driven shaft 5 is momentarily advanced. The shafts may be interconnected by two telescopic tubes, which are periodically moved relatively, or the shaft may carry arms between which is arranged a heavy wedge which when above the shafts separates the arms to advance the driven shaft and when below the shafts releases the arms. The shaft movements may be controlled by spring mechanism itself controlled by a clockwork device or by a system influenced by the external pressure, the temperature, or the degree of moisture, by electric or magnetic action, or by other physical agents capable by their variation of influencing the dimensions and position of a body.
Patent GB-571017-A (GB)
Title: Polymeric condensation products from amino alcohols and dicarboxylic acids
IPC: C08G69/44
Filed: 1943-03-15
Abstract: A resinous condensation product is produced by heating, e.g. at a temperature of 150-220 DEG  C. a dicarboxylic acid or anhydride thereof with an amino alcohol corresponding with one of the general formul  HO(CH2)xO(CH2)3NH2; HO(CH2)xNH(CH2)3NH2; [OH(CH2)x]2NH (CH2)3NH2, where x = 2 or 3 or HOC6H4O(CH2)3 NH2. Suitable acids are sebacic, adipic, succinic or an acid anhydride such as maleic or phthalic.  Other acids which may be used are S(C2H4 COOH)2 and O(C2H4COOH)2.  The reaction may be conducted in presence of a solvent such as a hydrocarbon.  Example 1 describes heating a suspension in a kerosene fraction of boiling range 100-200 DEG  C. of b -hydroxyethyl-3-amino-propyl amine and sebacic acid and distilling to remove all water.  Examples 2, 3, 4 describe the preparation of condensation products from b  - hydroxyethyl - 3 - aminopropylamine with maleic anhydride, phthalic anhydride and adipic acid respectively.  Examples 5, 6 describe the condensation of di-(b -hydroxyethyl)-3-aminopropylamine with sebacic acid and adipic acid respectively.  The amino alcohols are prepared by reacting in presence of caustic soda at 25-60 DEG  C. acrylonitrile with a glycol of formula OH(CH2)xOH, with an amino alcohol of formula OH(CH2)xNH2 or with a p  dihydric phenol, and hydrogenating the product with hydrogen in presence of a finely-divided nickel catalyst between 200 DEG  C. and 400 DEG  C.
Patent GB-1218366-A (GB)
Title: Bit detection circuit
Inventor: LYNES DENNIS JOSEPH
IPC: H03K3/286
Filed: 1968-01-26
Abstract: 1,218,366. Pulse detector circuits. WESTERN ELECTRIC CO. Inc. 26 Jan., 1968 [6 Feb., 1967], No. 4220/68. Heading H3T. [Also in Division G4] In a bit detector circuit comprising a multivibrator 26 having a non-conducting state and two stable conduction states, the multivibrator is switchable from its non-conducting state to one of its stable conduction states depending on which of two inputs is the larger and two symmetrically conducting devices 22, 23 are each connected to a different input to respond to the switching of the multivibrator to change from their conducting to their non-conducting condition with a time delay during which the multivibrator operates as a differential amplifier. The input to the multivibrator 26 is fed from a sensing circuit 11 via differential amplifiers 15, 21 which are biased together with an output differential amplifier 48, 49 for continuous conduction. Diodes 22, 23 are biased for conduction when the transistors 39, 40 are in their non-conductive state so that the digit signals 11 occur at the bases of these transistors 39, 40. To detect which digit pulse is present a positive strobe pulse is applied to a transistor 41 which enables both of the transistors 39, 40 to start to conduct. The transistors 39, 40 amplify the signals at their bases so that they conduct more and divert current from the resistors 36, 38 and from the diodes 22, 23. After a certain delay period the diodes become non-conducting and the normal regenerative action of the multivibrator takes over so that the transistor which was conducting at the higher level, which is dependent on the input conditions, then turns ON and the other transistor turns OFF. One of the output transistors 50, 51 then switches ON. The transistor 41 may be connected to enable a number of digit detectors as shown in Fig. 2 to be connected to associated sensing circuits 11. A signal may be induced in the sensing circuit 11 from a magnetic memory (10, Fig. 1, not shown), by switching the flux in magnetic material coated on electrical conductive circuits of the sensing circuit. The detector circuits may be integrated circuits. The strobe pulse is of sufficient length so as to enable the stable conduction state to be retained until after new information has been read into the memory.
Patent GB-492260-A (GB)
Title: Improved means and method in retreading of tyres
IPC: B29D30/54
Filed: 1937-02-15
Abstract: 492,260. Re-treading tyres. LLEWELLEN, J. W. Feb. 15, 1937, No. 4401. [Class 87 (ii)] In re-treading tyres the tube and tyre are mounted on a rim, a re-tread strip 15 is applied entirely over the crown tread and a transversely-split mould 11 of the strip or sheet metal type is fitted thereupon, the mould having electric terminals adjacent the split ends for passing an electric current therethrough and extending over the crown tread and diametrically inwardly and slightly laterally over the tread sides and partly over the tyre side walls or buttresses 12 so as to provide lateral support against internal pressure. The pressure may be increased by annuli 1 having flat faces so inclined as to provide a V-channel section and engaging the tyre side walls so as to compress the tyre and tube and also support the assembly. The annuli may be mounted on a screw-threaded shaft as described in Specification 457,208 or on a shaft 2 having right- and left-hand screw threads 6 passing through bosses 5 of spiders 4 supporting the annuli 1. The shaft 2 is rotatably mounted in bearing pedestals 3, 3a of which the pedestal 3a is removably secured on a base 9. The spiders are retained in position by a latch 7. The tyre may be buffed to fit the mould or remove the shoulders before applying a new tread. For buffing, the tyre may be rotated on the shaft 2 or on a separate shaft, in which case the re-treading device may be disposed horizontally. The mould may be shaped to form a plain tread which is subsequently cut to a pattern as by a tool applied while rotating the tyre on the shaft 2. The mould may be split in several sections coupled by screws and provided with terminals. Air or water bags may be used for expanding the tyre. The rim may be formed by overlapping flanges on the annuli.
Patent GB-719324-A (GB)
Title: Improvements relating to apparatus for discharging coke from coke ovens
IPC: C10B41/04
Filed: 1952-02-20
Abstract: 719,324. Discharging coke ovens. SIMONCARVES, Ltd., and PLANT, C. R. Feb. 5, 1953 [Feb. 20, 1952], No. 4452/52. Class 51 (2). [Also in Group XL (b)] In a system for aligning a machine such as the ram, coke guide or door extractor with a coke oven, each machine is provided with a photoelectric detector, means being provided on the oven to co-operate with this detector to indicate when the machine is aligned with the oven. As shown a ram pusher machine 2 and a coke guide machine 3 are situated on opposite sides of the coke oven 1. On each machine is mounted a lamp unit 4 and a photo-cell unit 5. Each photocell unit contains a pair of cells spaced in the direction of the movement of the beam. Mounted on the oven are plates 6, which, when the machine is correctly positioned, interrupt the light passing from source 4 to both photo-cells. If only one cell is illuminated a light indicates to the operator in which direction the machine must be moved. Circuit details.-Each photo-cell controls the grid potential of a triode valve in the anode circuit of which is a relay 11, 12, the cathodes of the valves being coupled When the light to either cell is interrupted separately the appropriate anode relay 11, or 12 is de-energized closing its contacts a, b, c, and lighting the appropriate arc lamps 20, 21. This indicates to the operator in which direction the machine must be moved. When the machine is correctly positioned both cells are obscured, both relays de-energized and a lamp 19 is illuminated through contacts b of both relays. Contacts c of both relays energized a further relay 23 to switch off lamps 20, 21. Pilot lamps 26. 27 and cell energizing lamps 21, 25 are also provided.