baber/WOPTO huggingface dataset:
Patent GB-659783-A (GB)
Title: Improvements in shaft positioning mechanism
IPC: G05D3/12
Filed: 1949-02-21
Abstract: 659,783. Stopping in predetermined positions. PHILIPS ELECTRICAL, Ltd. Feb. 21. 1949. No. 4680. Convention date, Feb. 23, 1948, [Class 80(ii)] A mechanism particularly for operating tuning controls of radio transmitters or receivers to predetermined positions, comprises a common driving motor 1 for driving a shaft 16 and a selector shaft 5. The shaft 16 has. number of locking discs 19, with notches 28, for engagement by a corresponding number of detent pawls 22, these pawls being controlled by a single selector disc 6, having a recess 37 on the selector shaft 5. The shaft 5 is also provided with a toothed wheel 41 having as many teeth as there are locking discs and pawls to the shaft 16 and with which an electromagnetically-operated detent pawl 40 co-operates. A gapped disc 44 is also carried by shaft 5 and co-operates with a series of contacts corresponding to the number of teeth on the wheel 41 which contacts are in series between the electromagnet coil 48 and a second series of contacts controlled by a manually-operated switch arm 43. Overload release clutches 10, 31 of the type described in Specification 653,762 are provided in the drive to shafts 5 and 16 and these clutches are adapted on slip occurring to operate switches 72 and 58 respectively, which are in parallel with a switch 57 operated by the electromagnet 48 and controlling the circuit of the driving motor 1. When it is desired to set the shaft 16 to a predetermined position the switch arm 43 is set to the appropriate contact which completes the circuit of electromagnet 48 which releases the pawl 40 and closes the switch 57. The motor starts and drives the selector shaft 5 until the gap in disc 44 breaks the circuit of coil 48. The shaft 5 is then held by the pawl 40 but the motor continues to rotate, by reason of the clutch 10 slipping, to drive the shaft 16 until it is arrested by the selected pawl engaging in the notch of its associated disc. The clutch 31 then slips and opens the switch 58 to stop the motor, the other parallel switches 57 and 72 being already open. More than one shaft 16 may be driven and controlled by the selector mechanism, each shaft being provided with a separate clutch and a switch in parallel in the motor circuit so that only after all the shafts have been locked in predetermined positions is the driving motor switched off. The switch 72 of the clutch 10 is provided to ensure the operation of the motor under certain conditions as when the spacing between two positions of the shaft or shafts 16 is so small as to prevent effective operation of the switches 58 of the clutch or clutches 31.
Patent GB-682461-A (GB)
Title: Raising liquid from deep wells by gaseous pressure
IPC: E21B34/06
Filed: 1950-02-23
Abstract: 682,461. Raising liquids by gaseous pressure. ARMITAGE, J. A. Feb. 23, 1950. No. 4682/50. Class 102 (ii). Apparatus for raising liquids from deep wells by gaseous pressure comprises a number of chambers 41 spaced along the tube 1 depending into the well. Each chamber has a non- return valve 18 at the bottom and a float valve 13, the space between the valves being connecter by passage 19 to the tube e 21 extending through the top of the chamber 41 to a non- return valve 42. The upper end of the chamber 41 is fitted with a float valve 34 and a port 40. When chamber 41 is filled with liquid and gaseous pressure is applied to port 40, the valve 34 is forced open and the liquid flows past valve 13, through pipe 21 and past valve 42 until the liquid level in the chamber permits valve 13 to close. When suction is applied to port 40, liquid flows through valves 18 and 13 until it fills the chamber and closes valve 34. Two pipes 38, 39 extend through the tube 1 and alternate chambers are connected through ports 40 to one pipe and the other chambers to the other pipe; each pipe is subjected alternately to pressure and suction and when pressure is applied to one pipe, suction is applied to the other.
Patent GB-1097643-A (GB)
Title: Camera supporting mediums
IPC: F16M13/04
Filed: 1966-02-03
Abstract: 1,097,643. Camera support. K.J. SAGATIS. Feb. 3, 1966, No. 4701/66. Heading G2A. A camera c is supported in the lower (vertical) part d, e of a holder, whose upper (horizontal) part has two side extensions h to which are attached straps k. These enable the support to be suspended from the neck of an operator so that it is located just below his chin. Also attached to the upper part is a foldable bracket m, g, having at its upper end a viewing or sighting frame l. When the bracket is erected into the operative position, this frame is aligned with the operator's eye. A preliminary adjustment is carried out by sighting on to an object a a few feet away, and adjusting the inclination of the bracket accordingly. Sighting of any desired subject through frame l, and subsequent operation of the camera, can then be effected rapidly.
Patent GB-1134787-A (GB)
Title: Ball game
IPC: A63F3/00
Filed: 1967-01-31
Abstract: 1,134,787. Constructional element for ball game. H. SIGGELKOW. 31 Jan., 1967 [1 Feb., 1966], No. 4706/67. Heading A6S. A trajectory ball game comprises interconnectable track supporting blocks and a track formed by a plurality of constructional cage-shaped plastics elements comprising straight or curved parallel bars, 1, 2 equispaced at each end round the annular support 3, 4 carrying a circular aperture through which the ball can pass. So that the elements may be interconnected end to end, one end is formed as a hollow spigot with an octagonal exterior cross-section, filling into the socket with circular cross-section on the other end. The track supporting blocks interconnect with the hollow cylindrical rib 8 on one face engaging the dovetail groove 9 on the opposite face of an adjacent block, and carry the ball in a tube 12 through aperture 11 in the block (Fig. 21). The tube 12 has the same spigot and socket end connections as the cage elements to which it is connected at either end. The tube is separable from the block and its inclination through the block may be adjusted since the aperture 11 is a part-spherical socket in which a shoulder carried on tube 12 is a pivoted fit. A block connecting element 14 (Fig. 18) with two grooves 9 intersecting at right-angles across one face and carrying ribs 8 on the other face is used to join two track-supporting blocks at rightangles.
Patent GB-548591-A (GB)
Title: A new or improved holder for x-ray and other photographic films
IPC: G03D13/12
Filed: 1941-04-10
Abstract: 548,591. Photographic film developing apparatus. SIEMENS-SCHUCKERT (GREAT BRITAIN), Ltd., and TUNNICLIFFE, E. A. J. April 10, 1941, No. 4794. [Class 98 (ii)] A holder for a photographic film during processing comprises a U-shaped frame 1, 2, 3 formed of channel-section members to accommodate three of the edges of the film, the ends of the members terminating short of one another at one or both corners of the U to provide a gap for the discharge of liquid from the channels. As shown, one or both of the ends 10, 11 between which the gap is formed may be curved, and the flanges may be cut away near the end to form a drainage lip 12. A strap 13 secures the cutaway ends. The top frame member 4 is formed with extensions 5, 6 by which the frame can be hung. The top of the film is held against a cross-member 7 by a hinged bar 8 of L-section.
Patent GB-632681-A (GB)
Title: Improvements in or relating to a broaching machine
IPC: B23D39/00
Filed: 1947-02-19
Abstract: 632,681. Broaching. CLEVELAND STEEL PRODUCTS CORPORATION. Feb. 19, 1947, No. 4809. Convention date, Feb. 21, 1946. [Class 83 (iii)] A broaching-machine has a stack of internally-toothed broaches 6 spaced by discs 14 which form cooling spaces between the broaches and have inlet and discharge openings for coolant. The broaches and spacing discs are held in a counterbore of a holder 1 by a screwed clamp and guide plug 11, and are registered by bars 26, 27 secured to them in diametricallyopposite grooves; one bar 27 may also be received in a groove 29 in the holder. Coolant delivered through passages 20, 18 in the holder is directed tangentially into the cooling space by inlet ports 17 in the spacing discs and, together with cuttings, is discharged through elongated openings 15, 16 in the discs and holders into an annular space formed by a shield 23.
Patent GB-941596-A (GB)
Title: Improvements in and relating to cartons for electric lamp bulbs and the like
IPC: B65D85/42
Filed: 1962-02-08
Abstract: 941,596. Cartons. AKERLUND & RAUSING A.B. Feb. 8, 1962 [Feb. 15, 1961], No. 4927/62. Heading B8P. A carton for an electric lamp bulb is made from a cardboard blank having flaps 37-40 which overlap to form an inset apertured platform to accommodate the bulb socket. Flaps 22-25 fold against the inner face of wall panels 2-5 and the blank is folded to form a collapsed tube. Flaps 47, 48, joined to flaps 38, 40 along crease lines 45, 46 respectively, are secured to flaps 37, 39, respectively, so that when force is applied to opposite sides of the collapsed tube the carton is erected. The edges of flaps 37, 39 adjacent flaps 38, 40, respectively, are cut away at 45 degrees to conform with the crease lines 45, 46. Specification 853,891 is referred to.
Patent GB-1350560-A (GB)
Title: Tetrahydrocarbyl chromium compounds and their use as catalysts  for the polymerization of 1-olefins
IPC: C07F11/00
Filed: 1972-02-02
Abstract: 1350560 Tetrahydrocarbyl chromium compounds HERCULES Inc 2 Feb 1972 [2 Feb 1971 (2)] 4930/72 Heading C2J [Also in Division C3] An organochromium compound of general formula Cr-[C(R 1 R 2 R 3 )] 4 , where R 1  and R 2  are each H or methyl and R 3  is H, alkyl, cyclohexyl, alkylcyclohexyl, cyclohexylalkyl or α,α-dimethylbenzyl is prepared by reacting a lithium compound Li-C(R 1 R 2 R 3 ) with an anhydrous chromium salt, such as a chromous or chromic halide or tetrahydrofuranate thereof, chromium tetra-tert.-butylate or chromium acetylacetonate, at -100‹ to 30‹ C., usually in the presence of a diluent such as pentane, hexane, heptane, octane or diethyl ether. Numerous specific compounds are prepared in the examples. They are useful as olefin polymerization catalysts.
Patent GB-941313-A (GB)
Title: Improvements in saw chain sharpeners
Inventor: CARLTON R
IPC: B27B33/14
Filed: 1960-02-11
Abstract: 941,313. Sharpening saw chains; sawing. OMARK INDUSTRIES Inc. Feb. 11, 1960 [Oct. 12, 1959], No. 4937/60. Headings B3D and B3L. [Also in Division B5] A saw chain which has cutter links on which cutting edges are formed rearwardly, in respect of the direction of chain travel, of the midpoint of a line between the axes of the cutter link pivots is sharpened by mounting a sharpening member on the said frame adjacent to a driving sprocket for the chain and bringing this member into contact with the outer surfaces formed on the cutter links rearwardly of the cutting edges as the chain travels around the sprocket, the radius of the path of travel of the outer surfaces around the sprocket being smaller than the radius of the path of travel of those outer surfaces around the nose end of the saw bar supporting the chain. A chain saw, Fig. 1, has a body 24 to which is secured a saw bar 28. A scratcher saw chain 26 is mounted upon the bar 28 and upon a sprocket 30 driven by a motor (not shown), the sprocket having a smaller pitch radius than the pitch radius of the nose end 34 of the bar 28. A saw chain sharpening device 22 comprises a base block 46 pivotally secured to the body 24 by a screw 48. A clamping screw 54 carried by the body 24 passes through an arcuate slot in the block 46 concentric with the axis of the screw 48, so as to clamp the block 46 in either the operative or inoperative position. A slide 62 vertically adjustable on the block 46 by a screw 74 has rotatably mounted therein a cylindrical sharpening element 36, the axis of which is inclined to the direction of motion of the slide 62 so that downward adjustment of the slide 62 advances the sharpening element 36 toward the saw chain 26 on the sprocket 30. The axis of the sharpening element is in the central plane of the saw chain 26 and sprocket 30. The sharpening element may be of tungsten carbide, tantalum carbide, or titanium carbide, the cylindrical surface being provided with a plurality of helical cutting teeth so that, in use, the sharpening element rotates to distribute the wear circumferentially around it. Soft metal with diamonds or other hard materials embedded therein may be used, the teeth being omitted. In a modification, Fig. 8, the sharpening device comprises a grinding wheel 130, with bevelled edges 132, mounted on a shaft 120 journalled in a block 121 movable, in the casing 116, towards and away from the main drive shaft 118 by a screw 127. The shaft 120 is driven from the shaft 118 by a pulley 124, belt 122 and spring expansible pulley 126. A pressure dresser is rotatably mounted on the end of a lever pivoted to the casing 116 so that the dresser can be manually held against the periphery of the grinding wheel 130. Specification 941,314 is referred to.
Patent GB-1365902-A (GB)
Title: Boom assembly
IPC: B66C23/693
Filed: 1971-07-14
Abstract: 1365902 Taking up slack in flexible elements; luffing booms WARNER & SWASEY CO 14 July 1971 [10 Sept 1970] 05081/74 Divided out of 1365902 Headings B8B and B8H The whole of the subject matter of this divided Specification is included in the parent Specification 1,365,902, but the claims are directed to an extendable and retractable boom wherein a flexible energy conducting conduit looped between relatively movable parts of the boom has its loop biased when the parts are in one relative position, and the biasing means is rendered inoperative when the parts are in another relative position.
Patent GB-452294-A (GB)
Title: Improvements in and relating to toothed gearing
IPC: F16H55/08
Filed: 1935-02-19
Abstract: 452,294. Toothed gearing. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Timken-Detroit Axle Co. ; 100, Clark Avenue, Detroit, Michigan, U.S.A.) Feb. 19, 1935, No. 5355. [Classes 80 (i) and 80 (ii)] In a variable. leverage pinion and gear having pitch circles of radii in the ratic of the numbers of teeth, the profiles of the pinion and gear are arcs of circles of radii substantially equal to the pitch radii. In designing the teeth of a seven-tooth pinion and twelvetooth gear of pressure angle 25‹, the method shown in the Figure is adopted. The centres 1, 2 of the wheels are connected by a line divided at 3 in the ratio 7 : 12. The touching circles 41, 42 passing through 3 are the pitch circles. Lines 1, 4 and 2, 4 are set off at angles 360‹/7 Î 4 and 360‹/12 Î 4 respectively to the line 1, 2. From the point 4 a circle D is drawn touching the line 1, 2. A line E is drawn at 25‹ to the perpendicular H so as to touch the circle D. With 4 as centre and 4, 1 as radius an arc F is drawn cutting E at 6. With centre 6 and the radius 1, 3 of the pinion pitch circle an arc G is drawn, which forms the tooth profile of the pinion. The other side of the tooth G<1> is drawn symmetrically to G<1> about the line 1, 2. To get the gear tooth profile, an arc I is drawn with centre 4 and radius 4, 2 to cut E at 9. With centre 9 and a radius equal to that of the gear arc J is drawn, which is tangent to G at 7. The portion 7, 8 of the arc J inside the circle D is the profile of the gear tooth 47. The opposite arc J<1> is obtained by symmetry. The invention may be applied to bevel gearing by making the distances 1, 3 and 3, 2 equal to the back cone radii. A twopinion bevel differential for automobiles, in which the planetary pinions have seven teeth and the side gears each twelve teeth is described. One side gear is thus subjected to maximum torque while the other is subjected to minimum torque. Spinning of one driving wheel thus does not result in a complete loss of the power supplied to the gripping wheel. The tops of the teeth are flattened. In a three-pinion differential the side gears preferably have a number of teeth divisible by three.
Patent GB-662354-A (GB)
Title: Mine haulage and trunk conveyor audible and visual signalling system
IPC: B66B19/06
Filed: 1949-02-28
Abstract: 662,354. Electric selective signalling. DAWSON, W.H. Feb. 28, 1949. No. 5374/40. Class 40 (i). In a mine haulage and trunk conveyer system one of the two usual bare signalling wires extending the length of the conveyor is divided into sections 2, 3, 4, 5 ... connected to individual relays 19 to 22 at the control station which are selectively operated, by short-circuiting the signalling wires in the corresponding line sections to light a lamp 23, ... 26, ... indicative of the section originating a signal. At the same time a bell 33 is operated by a relay 10 energised in series with the operative section relay. The bell signal ceases when the bridge across the operative signalling conductors is removed but the lamp signal remains until the spring contact of the operative relay 19 to 22 is manually reset by a spring loaded push rod 27 to 30. The system may operate with alternating current.
Patent GB-359352-A (GB)
Title: Improvements in and relating to electro-magnetic sound reproducers and recorders
IPC: H04R1/16
Filed: 1931-02-23
Abstract: 359,352. Sound recording and reproducing devices. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.. ) Feb. 23, 1931, No. 5639. Convention date, Feb. 22, 1930. [Class 40 (iv).] An electromagnetic soundreproducer or recorder has an armature 1 supported on the outsides of a plurality of elastic diaphragms 14, 15, forming walls of containers 9, 10, of viscous fluid 11, which damp the vibrations of the armature. The liquid pressure is preferably adjustable by screws 13, 14, and the containers are preferably mounted on the polepieces.
Patent GB-361750-A (GB)
IPC: G03C1/496
Filed: 1931-02-23
Abstract: 361,750. Photo sensitive material. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Feb. 23, 1931, No. 5642. Convention date, March 22, 1930. [Class 98 (ii).] Light-sensitive material, such as a silver halide or thallous iodide, is deposited from the vapour phase on to a support which may be coated with an adsorbent for the material, also deposited from the vapour phase. The deposition may, for example, be performed in a rarefied vessel 1 by placing the support 7 on a carrier 6 adjacent to a filament 2 which has been coated with silver bromide as by dipping it in molten silver bromide or by squirting thereon an alcoholic suspension of the salt. The silver bromide is vaporized by rendering the filament incandescent to about 700-800 C. for a few seconds, and is deposited on the support 7. Alternatively, the silver bromide on the filament may be replaced by calcium fluoride, which adsorbs thallous iodide when the support 7 is subsequently placed in a similar exhausted vessel containing, instead of a coated filament, a layer of thallous iodide on its base, which is heated to about 200-300 C. to vaporize it.
Patent GB-1408341-A (GB)
Title: Sound reproducer which can be inserted into a doll
IPC: A63H3/28
Filed: 1973-02-05
Abstract: 1408341 Gramophone for doll H W EISEN [trading as VERMOGENS VERWALTUNG BANS WERNER EISEN] 5 Feb 1973 [4 Feb 1972] 5661/73 Heading G5R [Also in Division A6]  A battery operated gramophone for replacing a "mamma voice'' sound apparatus in a doll is designed to be entered through and secured in the aperture in the doll which received the sound apparatus. The gramophone is formed in the shape of a boot having a turntable record 34, pick up arm 46 and diaphragm 40 in the foot part 10 and the drive motor 16 and battery 18 in the leg part 12. Control pin 20 when depressed opens a switch in the supply to the motor and by means (not shown), controls return of the pick up arm to its start position by raising the turntable against the action of spring 24. The pick up arm opens a second switch in the motor supply at the end of record play. Rim 52 and retaining members 54, 58, etc. secure the gramophone in the aperture in the doll.
Patent GB-1208322-A (GB)
Title: Electric storage battery electrode and method of making same
Inventor: POPAT PRANJIVAN VELJT
IPC: H01M4/02
Filed: 1968-02-05
Abstract: 1,208,322. Porous storage battery electrodes containing particulate binder material. TEXAS INSTRUMENTS Inc. 5 Feb., 1968 [28 Feb., 1967], No. 5701/68. Heading H1B. [Also in Division C3] In a porous storage battery electrode particles of electrichemically active material are bonded to each other and to the electrically conductive substrate by means of particles of binder material. Electrically conductive particles may also be present. The electrode may be made by mixing the particles, e.g. as a paste, spreading the mixture on the substrate, and heating the mixture to fuse the binder to the active particles and substrate. Suitable binders include P.T.F.E., polyethylene and vinyl polymers, in particles up to 100 microns diameter, and in amount up to 30 wt. per cent of the particle mixture. Suitable active materials include Cd, CdO, Zn, ZnO, Fe, Fe 2 O 3 , Ag, AgO, MnO 2  and #-Ni(OH) 3 . In examples a paste of CdO and P.T.F.E. with water, or of Ni(OH) 3 , carbonyl nickel, polyethylene and water, is-applied to Ni mesh strip taken from a reel, then the strip is dried, pressed and cut into electrodes. Similarly a paste of ZnO, Zn powder, polyethylene,-and a little HgO and surfactant is applied to Zn-plated Ni mesh. In a variation of the first procedure, the particle mixture is fed dry from a hopper and is held to the screen by textile strips, e.g. of non-woven polyamide felt, the whole then being pressed and heated. The fabric strip may be burnt off or peeled off or retained as a separator.
Patent GB-179701-A (GB)
Title: Improvements in tables
Filed: 1921-02-19
Abstract: 179,701. Haggis, L. F., and Nicoll, D. J. Feb. 19, 1921. Folding and collapsable tables.-A removable table-top 14 is detachably connected by hook and eye members to a folding collapsable support comprising ointed stretchers 1, 2 pivoted to triangulated legs and connected together by pin and hole devices 5. The uprights 3 are permanently attached bv struts 7 to horizontal cross-bars 6 and are detachably connected to the stretchers 1, 2 by means of the struts 4, which also are connected together in pairs by cross-bars 8 which may support a tray 10.