baber/WOPTO huggingface dataset:
Patent GB-499838-A (GB)
Title: Improvements in or relating to range finding attachments for photographic cameras
IPC: G03B13/20
Filed: 1937-07-30
Abstract: 499,838. Photographic cameras combined with telemeters. SCHWARTZ, M. July 30, 1937, No. 21175. Convention date, July 30, 1936. [Class 98 (i)] A telemeter comprises a casing attachable to the camera and containing a.reflectorviewing device including movable and fixed reflectors, the movable reflector being attached to a swinging arm connected to a movable lever arm or the like adjustable with respect to its fulcrum relation, and the arm being connected to a looped bar pivoted to a linked arm structure and contiguous to and cooperating with means for moving the objective carrier of the camera. As shown in Fig. 1, attached to a folding camera 1 is a telemeter 9, provided with two mirrors 7d and 7, Fig. 5. The upper mirror 7d is fixed and semitransparent, while the lower mirror 7 is movable and also adjustable on its base by set screws. Apertures 7c, 7k are provided on one side of the telemeter, and a viewing lens 7b is situated on the other side. The focusing knob 10 moves parallel bars 19a, to which the lens board 3 is attached, in grooves 19 on the camera bed 6. Attached to one side of one groove 19 is a stop plate 11a secured to which is a spring 11b. The opposite end of the spring 11b is secured to a lever 11, integrally attached to which is a bent rod. The bent rod moves with one bar 19a on its inward movement, and is moved out by the spring 11b until it strikes the stop plate 11a on the outward movement of the bar 19a. A slide rod is attached to the bent rod to stabilize the reciprocal movement. The lever 11 is pivoted to the arm 11k pivoted in turn to the looped bar 8 secured to an arm 15, Fig. 7, swinging on the screw pivot 17. A pin on the bar 18c carrying the mirror 7 projects through a hole 18a in the arm 15. The pivot 17 is secured to the sliding plate 20. A spring 11s retracts the bar 8 when the lens board 3 is moved inwardly. The plate 20 is held resiliently in position by springs 22 and 23. The adjustable screw 5a forms an upper limit to movement of the plate 20, and the pin 20b movable in the slot 20c forms a lower limit. The adjustable screw 5b holds the plate 20 in position laterally. The adjustments of the plate 20 permit the adaptation of the telemeter to different lenses. The cable release 25, Fig. 12, is connected to the support for the focusing knob 10 to permit of rapid operation. The bars 19a may move outwardly beyond the limit stop of the bent rod to disengage the coupling between the telemeter and the focusing movement to permit of focusing the ground glass screen for near distances.
Patent GB-166448-A (GB)
Title: Improvements in liquid raising apparatus
IPC: F04B19/16
Filed: 1920-07-14
Abstract: 166,448. Grant, J. C. July 14, 1920. Chain pumps.-A chain pump of the kind described in Specification 146,559, comprising a number of interengaging helices 1, is adapted for use in inclined positions by combining therewith on the underside a chain of helices 3 of smaller diameter attached to the main chain by ties &c. 4 or 5.
Patent GB-1433868-A (GB)
Title: Automatic control systems for and methods of controlling machine tool apparatus
IPC: B23Q15/00
Filed: 1972-05-06
Abstract: 1433868 Servo-positioning ALFRED HERBERT Ltd 1 May 1973 [6 May 1972] 21274/72 Heading G3N In a retroactive servo-positioning system, Fig. 1, for a member 10 [cutting tool of a machine tool] in which demand signals from unit 20 are combined in unit 22 with actual position signals to provide an error signal whose magnitude increases with load velocity, being zero when the load is at rest at a desired position, there is provided a store or function generator 32 which provides, for each rate of change of demand signal, a corresponding maximum allowable error signal value which, having had an error tolerance added to it, is compared in unit 40 with the actual error signals. Should the actual error signal exceed the maximum allowable with tolerance, a signal from unit 40 provides a warning signal and may stop the servosystem. The relation between rate of change of demand signal and maximum allowable error may be a linear one, or a table may be accessed, to provide, for each rate of change, a corresponding error limit. A micro-programmed computer exercising control of the servo calculates values of demand signal which are supplied to the servosystem at regular small intervals. Unit 30 may be an electro-hydraulic ram.
Patent GB-641715-A (GB)
Title: Improvements in or relating to air conditioning systems
IPC: F24F1/01
Filed: 1946-07-16
Abstract: 641,715. Ventilating and air-conditioning; valves for ventilation. CARRIER ENGINEERING CO., Ltd. July 16, 1946, No. 21329. Convention date, July 26, 1945. [Class 137] In a ventilating and airconditioning apparatus, a central conditioner supplies primary air to induction units 3 in each of the areas to be conditioned, and the air is discharged within each unit at high velocity at 23, so as to induce secondary air from the area, the quantities of primary and secondary air being substantially constant. A variable quantity of secondary air passes through a heat exchanger 7 to which a substantially constant quantity of conditioning medium e.g. hot or cold water, is supplied, and the induced secondary air and conditioned primary air are discharged into the area e.g. through a grille 16. The invention may be applied to the system described in Specification 641,712 in which outdoor air which has had its temperature and humidity adjusted in the central conditioner is supplied by a fan to units 3 in e.g. the rooms of a building. In the unit shown, the air enters through a duct 18 controlled by a slidable or other adjustable valve 20, into a sound-proof chamber 17, and is discharged through small nozzles 23 so as to induce circulation of air from the room through an inlet grille 15. This inlet is divided in two by the heat exchanger 7 and the upper half is controlled by a pivoted flap 26 to vary the proportion of induced air passing through the heat exchanger. The flap is actuated by a knob 34 through worm gearing 30. Alternatively it may be actuated automatically. The primary and induced air are mixed at 24 before discharge. Specification 379,430 is referred to.
Patent GB-806381-A (GB)
Title: Improvements in or relating to methods of, and apparatus for, etching metal surfaces by ionic bombardment and to articles produced thereby
IPC: C23F4/00
Filed: 1957-07-05
Abstract: 806,381. Desurfacing by fusion; making cylinders. GENERAL MOTORS CORPORATION. July 5, 1957 [July 27, 1956], No. 21347/57. Classes 83 (2) and 83 (4). The surface of a metal workpiece 18 is etched by bombarding it with a stream of gaseous ions passing through a screen 28 so as to form a pattern on the surface. A chamber 10 has an outlet 12 connected to a vacuum pump and an inlet 14 connected to a source of inert gas such as argon. An aluminium anode 16 is connected to the positive of a direct current supply of 3-15 kilovolts whose negative is connected to the workpiece 18 and to the screen 28 maintained at a predetermined distance from the workpiece. The latter may comprise a base metal 20 having a surface layer of chromium 22. The invention may be used for etching the inner surfaces of internal-combustion engine cylinders and cylinder liners and in this case the anode 16 is a rod and the screen 28 is a cylinder concentric with the anode. A specific example is given.
Patent GB-920210-A (GB)
Title: Improvements in or relating to phase-shifting circuit arrangements
IPC: H03H7/18
Filed: 1959-06-22
Abstract: 920,210. Phase-shifting networks. INTERNATIONALE NAVIGATIE APPARATEN N.V. June 22, 1959 [June 23, 1958], No. 21381/59. Class 40 (8). [Also in Group XXXVI] A circuit arrangement for phase-shifting two A.C. voltages 90 degrees with respect to each other and adding the voltages thus phaseshifted for use in analogue computers, comprises a first network having a source T 1  of a first A.C. voltage centre-tapped at 6 and loaded by a first resistor R 1  in series with a first capacitor C 1  having the relationship where f is the nominal frequency of the first A.C. voltage, and a second network having a source T 2  of a second A.C. voltage centretapped at 9 and loaded by a second resistor R, in series with a second capacitor C 2 , having the relationship where f is the nominal frequency of the second A.C. voltage, a direct connection being provided between either of the points comprising the centre-tap 6 and the junction 11 of the associated capacitor C 1  and resistor R 1  of the first network and either of the corresponding points 9 and 12 of the second network, the remaining points forming output terminals. The phase of the vector sum of the two voltages and the magnitudes of the two voltage components and the magnitude of their vector sum are independent of frequency.
Patent GB-1449349-A (GB)
Title: Mould apparatus for isostatic pressing of hollow parts
IPC: B22F5/10
Filed: 1974-05-14
Abstract: 1449349 Isostatic moulding NATIONAL FORGE CO 14 May 1974 [25 June 1973] 21391/74 Heading B5A A hollow article such as a ladle stopper is formed by isostatic compression of powder in a rubber mould 14 within a cannister 12 closed by a plate 16 which resiliently and detachably supports a mandrel 30. The latter is threaded and held by a rubber ring 28. A clamping ring 40 holds the upper end of the mould and air is evacuated through a port 22. In Fig. 4 a mould core 66 is attached to a cover 60 and receives side mandrels 76, 78 resiliently and detachably held by rubber rings within recesses in the core. The powder compacted may comprise a metal, metal oxide, metal carbide, a refractory ceramic or cermet.
Patent GB-570418-A (GB)
Title: Thread-severing device for sewing machines
IPC: D05B65/00
Filed: 1943-12-22
Abstract: 570,418. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Dec. 22, 1943, No. 21440. [Class 112] A thread-severing member mounted for movement with the presser-foot is depressed by a hand-lever to co-operate with a lower thread-severing element, which may be on the opposite side of the work and may be continuously actuated while the machine is running. In the form described, the latter element is a tooth on the rear end of the feed-dog, and the former member is adjustably mounted, as described in Specification 551,627, on a carrier 49 pivoted at 45 to the presser-bar 33, the pivot having vertical play, limited by an adjustable screw, in a slot in the presser-bar. The carrier 49 is depressed by a cam end on a spring-biassed hand-lever 56, pivoted on the presser-bar, and is raised with the lever 56 by a spring 66 secured to the lever. The lower end 41 of the presser-bar 33 has a shallow groove which guides the chain of thread extending from the rear of the work and also slightly relieves the pressure on the work at the point opposite the cutting edge on the feed-dog. A separate spring-pressed presser-foot 30 is carried on pins 36 sliding in guides on the presser-bar, so that the part 41 of the presser-bar can engage the thread-chain while the presser-foot 30 is still raised by the work.
Patent GB-923970-A (GB)
Title: Improvements in or relating to fume cupboards
IPC: B08B15/02
Filed: 1960-06-17
Abstract: 923,970. Removing fumes on generation. H. G. F. JENNINGS. Sept. 13, 1961 [June 17, 1960], No. 21474/60. Class 8(2). Fume extraction means for a wooden fume cupboard of the type including an operating chamber 1 formed with a gas outlet 15 comprise a duct 17 extending across substantially the whole width of the chamber with a plurality of horizontal inlet slots 23 vertically spaced. A condensation chamber 31, of rigid plastics or other inert material with a removable lid 37, has six spaced circular or elliptical apertures 41 to receive the necks of flasks 45, and a number of apertures 47 which are aligned with the slots 23 when the chamber 31 is hung from them on bent portions 49 of the chamber. The floors of the duct 17 and the chamber have drain outlets 61, 53 respectively. In use, an extraction fan maintains the interior of the cupboard at a pressure slightly less than that outside the cupboard to prevent gaseous fluids inside the chamber 1 from leaking out past a glass sash window 11 The atmosphere in the fume cupboard may be air or inert or reducing gas. In a modification of the condensation chamber, flask-receiving apertures are connected by slots.
Patent GB-125569-A (GB)
Title: Improvements in Starting Gear for Diesel and like Combustion Engines.
IPC: F02N99/00
Filed: 1918-12-23
Abstract: 125,569. North British Diesel Engine Works, and MacLagan, J. C. M. Dec. 23, 1918. Right to Patent relinquished. Starting. - In valve-gear for starting Diesel and like engines by compressed air, a cylinder and piston device on the end of the cam-actuated tappet rod throws the gear into operative position on the admission of compressed air. In the form shown. two pistons B, D are arranged in an openended cylinder A carried by the valve-rod E<1> of the compresedair starting valve E<2>. The piston B carries the cam bowl B<2>, which is normally held away from the cam C by a spring G<2> encircling the stem G of the piston B. On the admission of compressed air to a conduit A<3>, the pistons are separated to an extent determined by the engagement of the piston D with a shoulder G<3> on the stem G; the cam bowl B<2> is thus brought into a position in which it is actuated by the cam.
Patent GB-221821-A (GB)
Title: Percussion fuse for projectiles
IPC: F42C9/10
Filed: 1924-09-11
Abstract: 221,821. Pantoflicek, B. Sept. 11, 1923, [Convention date]. Projectile fuzes. - Percussion fuzes are provided with a device x which is displaced longitudinally on impact to an extent depending on the resistance of the target, whereby a delay proportional to said resistance is introduced in the action of the fuze. In the fuze shown, the impact, whether on a hard or soft target, drives the firing-pin, 23 into the detonator 26, but the plunger x, which is held back by a spring 30, remains in place when the impact is weak, and moves forward to a varying extent according to the resistance of the target when the target is hard; the flash is therefore transmitted directly through the ports 27, 35, 32, 33 on impact with a weak target, but a varying length of a delay composition 37 is interposed between the ports 27 and 35 when the target is strong, the delay varying with the resistance of the target. The Specification as open to inspection under Sect. 91 (3) (a) describes also a fuze, Fig. 1 (Cancelled), in which impact on a hard target crushes the cap 2 and fires the detonator 8, while a plunger x is maintained pressed against a nut 12; the flash is then transmitted to the port 18 by a delay patch 17. When impact is on a soft object, the cap 2 is not deformed, and the detonator 8 is thrust against the firing-pin 3 by the momentum of the plungers 5, x; the forward movement of the plunger x then uncovers ports 13, 15, which transmit the flash without delav. This subject-matter does not appear in the Specification as accepted.
Patent GB-713514-A (GB)
Title: A method of treating titaniferous iron concentrates
IPC: B03D1/08
Filed: 1952-08-28
Abstract: Titaniferous iron concentrates containing ferrous iron and organic flotation agent are subjected to oxidation until from 2-10 per cent. of the ferrous iron is converted to ferric iron whereby the concentrate is rendered amenable to digestion in concentrated sulphuric acid.  The oxidation may be carried out in an oxygen-containing atmosphere at a temperature of 200-500 DEG  C.  An oil-fired rotary kiln was operated for 30 minutes at 430 DEG  C. with an excess of air, in an example.  Oxidizing agents, such as nitric acid or aqueous nitrates at 50-100 DEG  C. and in amounts from 1-5 per cent. by weight of the ferrous oxide, may be used.  If an oxidizing agent is used, it may be added to the sulphuric acid used for digestion.  In an example, nitric acid was added to a slurry of the concentrate at 80 DEG  C.  After 6 minutes the solid was separated and dried after which 96.1 per cent. of the titanium value was soluble.
Patent GB-1504534-A (GB)
Title: Process for the preparation of trisubstituted ureas
IPC: C07C273/18
Filed: 1976-08-13
Abstract: 1504534 Preparation of trisubstituted ureas QUIMCO GmbH 13 Aug 1976 [13 June 1975] 21686/75 Heading C2C The invention relates to a process for preparing a trisubstituted urea of the general formula R(NHCONR<SP>1</SP>R<SP>11</SP>) n  in which R is an aromatic, aliphatic or heterocyclic radical, which may be substituted by one or more atoms or groups that are inert under the conditions of the reaction, R<SP>1</SP> and R<SP>11</SP> are monovalent aliphatic radicals and n is an integer, in which an amine of the general formula R(NH 2 ) n  is reacted in a solvent with a stoichiometric excess of a secondary ammonium N,N-disubstituted thiolcarbamate of the general formula and in which a part or all of the starting material which remain after the reaction and any intermediate compound which are produced during the reaction, and which distil with the solvent or at a temperature below the boiling point of the solvent are recycled into the manufacture of additional quantities of the said secondary ammonium N,N-disubstituted thiolcarbamate. Example I describes the preparation of 1 - (3,4 - dichlorophenyl) - 3,3- dimethylurea wherein. the volatiles obtained after the reaction are collected and reacted with (CH 3 ) 2 NH, sulphur and carbon monooxide in an autocalve to produce dimethylammonium N,N - dimethylthiol carbamate. In Example 5, dimethylammonium - N,N - dimethyl - thiolcarbamate is reacted with 3 - aminopyridine to form 1,1-dimethyl-3-(3-pyridyl)urea.
Patent GB-883327-A (GB)
Title: Improvements in or relating to the production of b-trichloroborazole
IPC: C01B35/14
Filed: 1960-06-21
Abstract: B-trichloroborazole is prepared by fluidising a bed containing ammonium bromide, fluoride, sulphate, or orthophosphate with a moisture-free gas and heating until the bed is moisture-free, charging moisture-free BCl3 gas to the bed, and condensing the trichloroborazole in a moisture-free atmosphere.  The fluidising gas may be dry BCl3 gas or another dry gas inert to the reactants, e.g. O2, N2, air, A, CO, CO2, or HCl.  The fluidised bed may be at 120 DEG -350 DEG C., preferably 150 DEG -170 DEG C., and the BCl3 gas and fluidising gas may be preheated to the same temperature as the bed. When the temperature rises beyond 170 DEG C. the flow of BCl3 gas may be stopped.  The fluidised bed may contain inert solid particles, e.g. petroleum coke, glass beads, or silica, or zircon sand, in amounts 90-50% of the total bed.  In a modification, when the bed contains one of the four named inert solids, the ammonium salt may be the chloride, as in the parent Specification.
Patent GB-586888-A (GB)
Title: Improvements in or relating to flexible mountings
IPC: B65D25/26
Filed: 1944-11-06
Abstract: 586,888. Resilient mountings; vibration damping. THIRY, L. F. Nov. 6, 1944, No. 21705. Convention date, Nov. 9, 1943. [Class 108 (iii)] A vibration-absorbing mounting comprises concentric inner and outer rigid members connected by at least one annulus of rubber, and means lying between the members or parts carried by them to impose a frictional resistance to relative axial movement between the members. As shown in Fig. 9 a rubber bush or sleeve 92 is located between concentric tubular members 90 and 91 and the damping device comprises an annular channel member 93 secured to the inner rigid member 90 and a split ring 94 engaging the channel and frictionally engaging the outer member 91. Vibrations of small amplitude are un-damped owing to the clearance 95 between the sides of the channel member 93 and the split ring 94. Radial and axial damping occur in the construction shown in Fig. 12 in which a second annular channel member 111 is interposed between the channel member 93 and the friction ring 94 and a sinuous backing spring 112 presses the ring 94 into engagement with the member 91, radial damping being produced by friction between the ring 94 and the sides of the channel member 111. In a similar construction (not shown) the ring 94 is replaced by a U-shaped ring of plastic friction material. In another construction (not shown), damping is produced by resilient tongues secured or formed on the outer peripheral surface of the rigid member 91 which frictionally engage the inside surface of an outer concentric annular extension to the inside rigid member 90. In the construction shown in Fig. 5, an outer rigid tubular member 53 is secured to an inner rigid tubular member 50 by a pair of rubber bushes 51, 52 and damping is effected by displacement of a friction ring 62 of moulded plastic or brake lining material relatively to a liner 59. Angular displacement of the inner rigid member 50 is permitted by a curved inner surface 63 on the friction ring 62. Clearances 82, 83 may be provided to cause zero damping for small vibrations. In the construction shown in Fig. 8, in which fluid friction damping is employed, the fluid 77, which may be glycerine, a mixture of glycerine and alcohol, or atmospheric air, is driven from one "side to another of a baffle 76a through a clearance 70a. Clearances 80, 81 allow small undamped vibrations.
Patent GB-1263602-A (GB)
Title: Replacement and self-lubricating bearing assembly and a pivot assembly comprising such a bearing assembly
IPC: F16C11/04
Filed: 1969-04-29
Abstract: 1,263,602. Loaders; self-lubricating bearing assembly; shovel excavators. CATERPILLAR TRACTOR CO. 29 April, 1969 [8 July, 1968], No. 21709/69. Headings E1F and E2F. A self-lubricating bearing assembly for pivotally mounting two members e.g. parts of a shovel loader together comprises a tubular pin having a cylindrical, unobstructed lubricant chamber of uniform cross-section, bearing means mounted on the pin and adapted to pivotally mount one member on the pin, two sleeves slidably mounted on the pin coaxial with and separated by the bearing means and adapted to be mounted in mating bores in the other member, and passage means formed in the assembly, connecting the chamber with the bearing means and including a passage in each sleeve for communicating lubricant to the ends of the bearing means. In a bucket loader a lift arm 12 is pivoted to frame member 11 by a bearing assembly including a pin 20 which has chamber 42 from which lubricant passes to bearings 23 via passages 37, 36 in sleeves 21, 22 respectively. Seals 24 prevent the escape of lubricant. Cover plates 26, 28, bolted to pin 20, seal chamber 42. Plate 26 may be bolted to member 11, and plate 28 to sleeve 21. Abutting flats on plates 28, 29 prevent pin 20 rotating relative to member 11. Filler plug 32, attached to member 12, may be attached to one of the sleeves. Air vent plug 43, attached to plate 28, may be attached to one of the sleeves or to member 12. The bearing assembly may also be used to pivotally mount the loaders left and tilt jacks.
Patent GB-854547-A (GB)
Title: Fishing line guide
IPC: A01K87/04
Filed: 1958-07-08
Abstract: 854,547. Fishing tackle. WELLS, C. July 7, 1959 [July 8, 1958], No. 21799/58. Class 48 A line guide for a fishing rod comprises a moulded plastic block having a bore A for the passage of the line and having embedded in the block a half round wire the ends of which project beyond the block and are adapted to be bound by thread to the fishing rod. The side of the block in contact with the rod is concave.