baber/WOPTO huggingface dataset:
Patent GB-726136-A (GB)
Title: Improvements in and relating to optical objectives
IPC: G02B13/00
Filed: 1953-06-11
Abstract: 726,136. Optical objectives. VOIGTLANDER AKT.-GES. June 11, 1953 [June 11, 1952], No. 16130/53. Class 97 (1). A wide-angle objective consists of front and rear simple negative meniscus components concave to a central stop and enclosing two positive doublet meniscus components also concave to the central stop and each consisting of a negative element nearer the stop cemented by a collective surface to a positive element, each of said elements having surfaces of unequal curvature, the air spaces between the doublets and the outer components having the shape of collective meniscus elements concave to the stop and being so bent that in each space the difference of the radii of curvature of the surfaces bounding the airspace is greater than 15 per cent but less than 85 per cent of the radius of inner surface of the corresponding outer meniscus component. Numerical data are given for one example of the objective shown which is not symmetrical about the central stop.
Patent GB-1309797-A (GB)
Title: Sliding clasp fasteners
IPC: A44B19/12
Filed: 1970-04-06
Abstract: 1309797 Sliding clasp fasteners OPTI-HOLDING AG 6 April 1970 [23 April 1969] 16173/70 Heading E2S A sliding clasp fastener comprises stringer tapes 1, 2, rows of interlocking elements 3, 4 attached thereto and a slider 9, all of which are made from a material which is capable of elastic deformation at ironing and wringing temperatures, the slider 9 having guide channels 11 for the rows of interlocking elements 3, 4, and surfaces 14, 15 on its upper and lower plates 12, 13, such that under loads applied at right angles in either direction to the slider e.g. during ironing and wringing the surfaces 14, 15 contact and imprison the stringer tapes 1, 2 and the faces defining the guide channels 11 together with the imprisoned stringer tapes 1, 2 imprison the interlocking elements 3, 4 as shown in Fig. 3.
Patent GB-286137-A (GB)
Title: Improvements in lifting-jacks
IPC: B62H1/00
Filed: 1927-06-17
Abstract: 286,137. G÷rlitzer, A. June 17, 1927. Supports attached to cycles.-A lifting-jack or stand clamped at its upper end to the load, which may be the frame of a motor-cycle &c., has a guide pivoted to the clamp and carrying a spring- retracted extensible leg, a lever being mounted on the guide pivot and connected by a toggle link to the leg. As applied to a motor-cycle, clamps 2 are secured to the rear frame members 1 and carry a transverse shaft 3 provided with a coiled spring 6 anchored to a frame member 7. Pivotally mounted on the ends of the shaft are guides 8 in ,which the legs 9 are adapted to slide. The legs 9 are normally retracted by springs 11. An operating handle or pedal 5 is secured to one end of the shaft and when depressed turns the guides downwards until they contact with stops 14 on the clamps. Further movement of the handle then pushes the legs into contact with the ground and raises the load by means of toggle links 12, pivoted to the handle and legs. The toggle links in the extreme position contact with stops 15 on the guides, the toggle link pivots being then over the dead centre so that the jack remains extended.
Patent GB-686335-A (GB)
Title: Method of and apparatus for improving the partial-load efficiency of gas turbine installations
Filed: 1950-06-28
Abstract: 686,335. Gas turbine plant. MASCHINENF'ABRIK AUGSBURG-NURNBERG AKT.-GES. June 28, 1950 [Feb. 16, 1950], No. 16181/50. Class 110(iii) The load on an open cycle gas turbine plant having a main compressor and at least one auxiliary compressor arranged in parallel and a main turbine and at least one auxiliary turbine arranged in parallel is reduced by adding one or more of the auxiliary turbines to the circuit and removing one or more of the auxiliary compressors. The gas turbine plant shown comprises two low-pressure compressors 1, 2 connected hydraulically in parallel which discharge to a highpressure compressor 7 feeding a combustion chamber 8. The combustion chamber feeds a main gas turbine 9 and an auxiliary turbine 10 arranged hydraulically in parallel driving the compressor 7. The exhaust gases from these turbines pass through a reheat chamber 13 to a turbine 14 driving the compressors 1, 2, and a generator 15. The compressor 1 may be of the radial flow and compressor 2 of the axial flow type or both of the compressors may be of the axial flow type. To improve the efficiency at partial load valves 4, 5 and 6 and a releasable coupling 3 are provided. The compressor 1 may be separated from the main compressor shaft by the coupling 3 or this coupling may be left in engagement and the compressor cut out by closing valve 5, partially opening valve 4 and opening valve 6. Valves 11, 12 are provided to bring the turbine 10 into or out of operation. The arrangement is such that at partial load the turbine 10 is brought into operation and the' compressor 1 taken out of operation. One of the auxiliary turbines may be used to start the plant by using compressed air or combustion gases from cartridges.
Patent GB-545195-A (GB)
Title: Improvements in aircraft
IPC: B64C11/44
Filed: 1941-11-07
Abstract: 545,195. Electromagnetic brakes. CONSTANT SPEED AIRSCREWS, Ltd., and BURTON, P. Nov. 7, 1941. No. 16200/40. [Class 35] [Also in Group XXXIM In aircraft, a mechanism driven directly or indirectly from a rotating shaft, such as pitchvarying or propeller de-icing means or a windmilling screw, is controlled by the braking effect of a stationary toroidal coil electromagnet on an armature carried by the mechanism; alternatively the armature may be stationary and the electromagnet rotate. Fig. 1 shows the magnet 8 acting on an armature 7 loosely rotatable on the propeller shaft and carrying a crown wheel 3 gearing with bevel pinions on the blade roots. Energization of the magnet thus alters the pitch of the blades. By making the armature 25, Fig. 4, solid with the shaft of a windmilling air-screw braking may be effected. In a modification two electromagnets are provided, associated with outer and inner elements of an epicyclic gear which is thus operable in either direction to vary the pitch of the screw blades.
Patent GB-594092-A (GB)
Title: Improvements relating to the masts and spars of yachts and other craft
IPC: B21C37/15
Filed: 1945-06-26
Abstract: 594,092. Spars. CRANKSHAW, H. M. June 26, 1945, No. 16226. [Class 115] Tubular spars are formed from semitubular plates b connected by riveting at their flanged edges, a stiffener web d being fitted between the flanges if desired. The flange b<2> is provided with an extension b' to provide a sail track.
Patent GB-559359-A (GB)
Title: Improved adhesive composition
IPC: C08L93/00
Filed: 1943-03-08
Abstract: 559,359. Resinous polymerization products. FRANKFURTHER, P. March 8, 1943, No. 16230. Divided out of and addition to 558,100. [Classes 2 (iii) and 15 (ii)] [Also on Group VI] The adhesive composition of the parent Specification is modified by replacing the polyvinyl acetate by polyvinyl acetal and including as an essential ingredient a hardening agent, e.g. tannic acid or formaldehyde, in a proportion of 2 to 20 per cent. of the polyvinyl acetal. The polyvinyl acetal may be of high, medium or low viscosity, i.e. having melting points above 160‹ C., 140-160‹ C. and below 140‹ C. respectively.
Patent GB-272053-A (GB)
Title: Conversion of lead sulphate into lead carbonate
IPC: C01G21/14
Filed: 1926-06-29
Abstract: 272,053. Smith, S. C. June 29, 1926. Lead carbonate.-In the production of lead carbonate by passing carbon dioxide into a suspension of lead sulphate in a solution of ammonia, the carbon dioxide is passed into the suspension at such a rate that it passes into the form of lead carbonate as nearly as possible pari passu with its introduction into the suspension, and the presence of carbon dioxide in the solution is avoided as far as possible. By this means the lead carbonate obtained is substantially free of lead sulphate. Specification 239,257 is referred to.
Patent GB-573750-A (GB)
Title: Device for removing or extracting pipe-cleaners from tobacco pipes
IPC: A24F9/08
Filed: 1944-08-29
Abstract: 573,750. Tobacco pipe-cleaners. PRATT, L. R. Aug. 29, 1944, No. 16382. [Class 130] Means for removing a pipe-cleaner comprises a member 1 which is adapted to be inserted in the pipe bowl and has a hole' 5 at its lower end which registers with the stem orifice and is adapted to engage the end of the pipe-cleaner and thus extract it from the pipe. The hole 5 may be circular, rectangular or oval and is preferably bevelled. Notches 9 are also provided. The member 1 corresponds in shape to the pipe bowl and has sharp scraper surfaces 3. It may be incorporated with a screw-driver 10 and a crown-cork remover 12.
Patent GB-123026-A (GB)
Title: Improvements in or appertaining to Boiler Furnaces or the like.
Inventor: TETLOW CHARLES ERNEST
IPC: F22B7/00
Filed: 1918-10-09
Abstract: 123,026. Tetlow, C. E. Oct. 9, 1918. Expansion rings.-The first ring section a of a boiler flue is flanged outwardly at its rear end a<2> and has a circumferential groove or corrugation c near to its flange connexion a<1> with the boiler end-plate. The corrugation may curve outwards beyond the diameter of the ring instead of inwards, as shown.
Patent GB-233924-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02M67/00
Filed: 1924-07-09
Abstract: 233,924. Gatti, M. July 9, 1924. Cylinders receiving liquid fuel.-In a twostroke-cycle engine with main and auxiliary cylinders 1, 3 connected near the combustion chamber by ports 12, the scavenging air is supplied by a blower to ports 13 controlled by the auxiliary piston, the main piston controlling the exhaust ports 10. The main piston leads the auxiliary piston so that after the main piston has passed its upper dead centre the auxiliary piston moves still further inward and as the ports 12 are then closed compresses air to a high pressure in the top of the cylinders 3. This air is used to inject fuel which has been supplied by a pump through the valve nozzle 19 to a chamber 40; this chamber is closed at the top by an air valve 37 and at the bottom by a plate with a cylinder injection valve 38. The valve 38 has a head 41 resting in a recess 39 in the air valve 37 ; the air closes the passage 15 between the tops of the two cylinders except when fuel injection is to take place when the air valve moves first and then carries the injection valve with it.
Patent GB-218827-A (GB)
Title: Improvements relating to screw mechanisms for grease guns and other purposes
IPC: F16N3/12
Filed: 1923-06-25
Abstract: 218,827. Williams, H. June 25, 1923. Screw-and-nut mechanism for grease guns &c. The nut is divided longitudinally into two parts d, d pivoted by means of pins e to the interior of a containing socket c. One end of the nut engages a spring f which forces the chamfered ends of the nut against a similar surface on a rotatable locking member h, which may be screwed on to the socket c to bring the two parts of the nut together.
Patent GB-333657-A (GB)
Title: Improved means for extracting a wrapped packet from a box or carton
IPC: B65D77/30
Filed: 1929-05-29
Abstract: 333,657. Wilts United Dairies, Ltd., Lawton, C. R. B., and McDonnell, J. May 29, 1929. Unpacking. - One of a number of packets 2, which may be segmental, closely disposed in sideby-side relationship in a box 1, is raised to facilitate removal by pulling upon a tape 4 passing up one side of the packet and having attached thereto a piece 3 of stiff cardboard or metal interposed between the packet and the bottom of the box. This causes the piece 3 to tilt and the packet 2<a> is raised for removal.
Patent GB-1453424-A (GB)
Title: Endocardiac electrode devices
IPC: A61B18/14
Filed: 1974-04-16
Abstract: 1453424 Surgical electrodes H R LAGERGREN 16 April 1974 [14 April 1973] 16618/74 Heading A5R An endocardiac electrode device for intracardially stimulating the heart comprises an elongate electrically conductive member 1 surrounded by insulating material 2, and a generally cylindrical head portion 3 having surface regions 5 comprising electrically conducting strips disposed parallel to one another and to the axis of the device, the head portion 3 also having surface regions 4 of electrically insulating material. The total surface area of the conductive regions 5 is not more than 15 mm<SP>2</SP>, and is preferably 5 mm<SP>2</SP>. The volume of the head portion 3 is between about 15mm<SP>3</SP> and about 60mm<SP>3</SP>, and is preferably about 25mm<SP>3</SP>. The weight of the head portion 3 is between about 0.30g and about 2.0g, and is preferably about 0.8g. The width of the strips may be from about 0.01mm to about 0.4mm, is preferably about 0.2mm, and their spacing is from about 0.5mm to about 5mm, and is preferably about 1.5mm. In a second embodiment, Figure 2 (not shown) helical electrically conductive strips 5 are disposed about a generally cylindrical head portion 3. Successive turns of the helix are separated by a distance of from about 0.5mm to about 5mm, and preferably about 2mm. In a third embodiment, Figure 3 (not shown) the conductive regions 5 take the form of isolated discs on the surface of head portion 3. In all the embodiments the conductive regions may alternatively comprise the protruding regions of an electrically conducting central core, the interspaces between the protruding regions being filled with electrically insulating material. The central core may be of screwthread or hedgehog configuration. In a further embodiment, the electrically conductive regions may comprise a wire cage, which cage is at least partially filled with electrically insulating material.
Patent GB-374041-A (GB)
Title: An improved cutter for machining or truing the journals or pins of crank shafts and other cylindrical parts of engines or machines
IPC: B23B5/06
Filed: 1931-02-27
Abstract: 374,041. Turning. BUDGE, H. S., Slater's Garage, Rhuddlan Road. Abergele, Denbighshire. Feb. 27, 1931, No. 16626. Divided on 374,028, [Group XVI]. [C1 as 83 (iii).] Hollow cutter-heads.-A cutter-head for use in trueing the journals of shafts, such as crank-pin journals, comprises a cvlindrical body formed of segmental parts having teeth projecting radially inwards and adapted to surround the work. In the construction shown, the bodv consists of semi-cvlindrical portions 1 separated by interchangeable packing-pieces 2 and held in a divided head 3. The head may be held together by screws, cotters, &c., and in the form shown pins 6 on one part engage in holes in a spring-steel stirrup 4 carrying a block 7 in which is threaded a screw 8 engaging the other part, the ends of the pins 6 being bevelled as shown to allow the stirrup to be sprung over them. The teeth 1<x> may be integral with the cutters 1 or may be inserted therein and arranged either axially or helically, or adjustably. The cutter-head may be made to fit inside the existing connecting-rod end of an engine. The cutting edges of the teeth 1<x> may be extended radially on the end faces of the cutters, as shown, so as to guide the device on the cheeks &c. of the journal but without cutting the cheeks and the outer edges of the teeth may be rounded to produce a radius in the journal ends. The teeth adjacent the packing-pieces 2 are omitted to allow adjustment of the diameter of the head.
Patent GB-828618-A (GB)
Title: Apparatus for packing piled-up tablets, as for instance biscuits, or chocolate bars
Inventor: HANSEL OTTO
IPC: B65B23/14
Filed: 1956-05-30
Abstract: 828,618. Feeding articles to wrapping machines. HANSEL JAN G.m.b.H. May 30, 1956, No. 16673/56. Class 94(1). A wrapping machine comprises a series of shoots A, B, C ... containing stacks of flat articles 13, e.g. biscuits and arranged above an endless conveyer 2 fitted with tines 3 arranged to pass through a horizontal grid 4 and stack supporting grids 14 having inclined extensions 15 associated with the bases of the shoots. Each shoot comprises four channels 5 fitted with retaining plates 7 and is adjustably mounted on supports 10 by means of slotted brackets 8 fitting over pins 9. The grids 14 are adjustable by screw 16 so that the gap between the grids and the lower ends of the plates 7 slightly exceeds the thickness of one biscuit. Each shoot may be raised to an inoperative position by a slidable cam 18. The lower ends of the extensions 15 terminate at successively higher levels so that layers of biscuits are withdrawn in succession from the shoots by each set of tines 3 and fed down the extensions 15 into superposed relationship. The resulting piles of biscuits are moved along the grid 4 by the tines and then transferred by a reciprocating pusher 20 to wrapping mechanism 23.
Patent GB-450671-A (GB)
Title: Improvements in or relating to hydraulic transmission apparatus
IPC: F16H39/32
Filed: 1934-10-17
Abstract: 450,671. Hydraulic transmission of power. GUINNESS, E. E., Allendale, Coalway Road, Wolverhampton, ELWELL, M., The Laurels, Tipton Road, Woodsetton, Staffordshire, and WATTS, R. C., Cleveland Works, Cleveland Road, Wolverhampton. Oct. 17, 1934, Nos. 16759/36 and 16757/36. Divided out of 450,625. Drawings to Specification. [Class 69 (ii)] In hydraulic transmission mechanism having a vane pump and a vane motor with means for varying the power transmitted, the pump and motor rotors are arranged side by space in axially spaced relationship, one rotor being supported at axially spaced positions from the shaft of the other rotor. Clutch means may be provided to allow of obtaining direct or no drive. The forms of transmission described are the same as in Specifications 450,625 and 450,676, and one form is the same as that described with reference to Figs. 1-7 of Specification 450,595. Specifications 362,999 and 430,159, [Group XXVI], also are referred to.
Patent GB-497287-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D29/42
Filed: 1937-06-16
Abstract: 497,287. Centrifugal pumps; stuffing- box substitutes. ALLEN SHERMAN HOFF CO. June 16, 1937, No. 16782. Convention date, June 26, 1936. [Classes 110 (i) and 122 (v)] In centrifugal pumps for abrasive mixtures with the pump clearances flushed by clear water, sealing between the impeller and housing is effected by a resilient ring projecting radially from one member and engaging on the other member a cylindrical surface coaxial with the impeller axis, the ring being deflected by the excess pressure of the flushing-fluid. The impeller B comprises a metal skeleton frame moulded into a rubber sheath 11, the frame having shrouds 10, 10<11> connected by bladesupporting parts 10<1>. The perforations in the frame may consist of arcuate slots arranged radially or holes arranged in rows. The inlet 3 has a rubber lining 4 while the impeller chamber has linings 7, 9, C. Flushing-water is supplied by pipes 25, 26 to the inlet and shaft sides of the impeller. In the latter case, the lining 9 has a ring or lip 27 engaging the impeller and shaped to pass flushing-water and prevent back flow of abrasive material. In the former case, the lining C may carry a similar rib engaging a metal ring bolted to the impeller, or a metal sealing-ring D is pressed against a boss on the impeller. The ring has slight axial but no rotary movement. A test pipe 23<11> may draw off samples of flushing- liquid to check for abrasive material.
Patent GB-257056-A (GB)
Title: Improvements in and relating to power hammers
IPC: B21J7/10
Filed: 1925-06-30
Abstract: 257,056. Horman, A. E. June 30, 1925. Power hammers.-The hammer member is adapted to be connected with an elongated constantly-moving endless member for moving it along the anvil. The hammer 18 is pivoted at 20 to a supporting arm 19 swinging on the bar 14 and is connected at 22 to an arm 21 in a sleeve 23 having arms 24 extending along the arm 19. A pin 25 extending between the ends of the arms 24 through a slot 29 in the arm 19 carries rollers engaging cams 17 on the machine frame, and a block on the pin engages a spring 28 in the slot 29, whereby the hammer 18 is kept always in vertical position. The hammer is raised by oscillating arms 31, 32 swinging on the bar 14 and connected across their free ends by a crossbar 33, which engages under the hammer arm 19 and may be secured thereto by a pivoted latch 34. When the latter is unfastened the hammer may be swung about the bar 14 into inoperative position to permit other use of the anvil 4 without obstruction. The arm 31 is actuated by a rod 45 connected by collars 43, 44, links 41, 42, springs 40 and bands 38, 38' to a block 39 eccentrically pivoted at 48 to the shaft of the power wheel 7, which is driven from a wheel 5 bv a belt 6 when a jockey pulley 9 carried on an arm 8 of a lever 10 is pressed down to tighten the belt. The lever 10 is pivoted to a horizontal rod 50 provided at the end with a pedal 57 and supported by a link 51. Forward movement of the pedal 57 depresses the jockey pulley 9 and starts the action of the hammer. A spring 55 normally keeps the jockey pulley raised so that no drive is transmitted to the wheel 7. The rod 50 is connected by a cross-rod 54 to another longitudinal rod 52 on the other side of the machine, and the pedal 57 is pivoted on the rod 54 and connected by a rod 58 and link 60 to a weighted lever 62 on a shaft 64. The latter is adapted to actuate a yoke-shaped latch 68 on the hammer member and bring either arm 70 of the latch into engagement with the upper or lower run of a continuously-driven chain 72, whereby the hammer head is traversed along the anvil after giving the pedal 57 a pivotal movement. One of the suspension links 13 of the rod 52 acts as a brake lever for a brake 12 engaging the wheel 7, the pivot of the brake lever being parallel to the axis of the wheel 7 and within its periphery, whereby increased braking effect is obtained. Projections 71 on the latch 68 are adapted to engage cams at the sides of the machine frame so as to disengage the latch from the chain 72 when the hammer approaches either side of the machine.