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    • 1. 发明专利
    • Improvements in or relating to brake devices for winding engines and like winches
    • GB620647A
    • 1949-03-28
    • GB240747
    • 1947-01-27
    • FULLERTON HODGART BARCLAY LTDWILLIAM MCGREGORJAMES PETRIE
    • B66D5/26
    • 620,647. Winch brakes. FULLERTON, HODGART & BARCLAY, Ltd., McGREGOR, W., and PETRIE, J. Jan. 27, 1947, No. 2407. [Class 78 (v)] A winch brake includes a pressure fluid brake engine 1 having a piston 4 loaded with brake weights 5 ; a spring and cylinder de. vice having a cylinder 6 and piston 12 and opposing springs 7. A brake lever 16 which 'operates brake-shoes 18, 20; a lever 8 pivotally carried by the brake lever are connected to each piston, and controlling valves operated by a hand lever; such that initial movement of the hand lever causes the release of fluid pressure in the spring and cylinder device and the application of a fraction of the braking effort to the brake-shoes and additional movement of the hand lever effects the release of fluid pressure in the brake engine and increases the fraction of the braking effort applied, full braking effort being applied by the brake weights when the linkage reaches the final position of rest. Working cylinders 1 and 6. As shown, cylinder 1 operates slide 4, which slide is weighted by weights 5 and is linked by link 9 to lever 8 so as to operate the latter. Cylinder 6 has a piston 12 connected to crosshead 10 which is connected to lower cross plate 13 by rods 14 so that the movement of the piston works against springs 7. Crosshead 10 is pivoted to the other end of lever 8 so that the latter is operated by both cylinders, Both cylinders are operated by pressure fluid which is controlled by valve 2 operated by handle 3. Lever-and-link assembly. Lever 8 is pivoted at its centrepoint 32 to the end of brake lever 16, which itself pivots at 25 to a bracket 17 fixed'on brake-shoe 18. Lever 16 is connected by links 24, 23, 22 to the top of the brake-shoes and by links 27, 26, 22 to the bottom thereof. Brakeshoes 18 and 20 are pivoted to pivoted struts 19 and 21, and an additional pivoted strut 28 is provided for brake-shoe 20 to ensure its movement parallel to itself. Operation. In the brake-off position, slide 4 of cylinder 1 is at its top position being held by fluid pressure against the pull of weights 5, and piston 12 of cylinder 6 is also in its top position being urged by its fluid pressure against the pull of springs 7. Handle 3 is first moved to an intermediate position. This releases the fluid pressure in cylinder 6, the piston of which accordingly drops under the pull of the springs and moves lever 8 downwards and thus causes lever 16 to pivot about 25 and, through the links, partially apply the brakes to the drum 31. Handle 3 is then moved to its final position. This releases the fluid pressure in cylinder 1 and allows slide 4 to drop. The movement of the slide by a pivoting movement around 32 elevates piston 12 of cylinder 6 till its springs are compressed after which the full direct pull of the weights is transmitted as the full braking-effect to the brakes.
    • 2. 发明专利
    • Improvements relating to loose leaf binders or books
    • GB498334A
    • 1939-01-06
    • GB2182637
    • 1937-08-07
    • WILLIAM MCGREGORDUNCAN & SON LTD G
    • B42F13/04
    • 498,334. Loose - leaf binders. McGREGOR, W., and DUNCAN & SON, Ltd., G. Aug. 7, 1937, No. 21826. [Class 146 (i)] In a thong binder in which the stretcher-bar g is actuated by a screwed-spindle k engaging a nut therein to tighten the thongs, the nut is made in two parts h, i movably mounted so as to be released from the spindle k when rapid adjustment is necessary. In one form, the parts h, i are mounted on pivots j and are geared together for simultaneous movement. The threaded portions of the nut engage the spindle k at the side of the pivots j nearer to the clamping edge of the cover so that the parts h, i have a tendency to grip the spindle when the thongs are tightened. A spring q holds the parts h, i in either the gripping or releasing position and a knob n is provided for operating them. In modifications, the knob k is replaced by a keyoperated pinion engaging teeth on the part h or by a key-operated screwed spindle pivoted to the part h and the pinion may be replaced by a rotary cam. Alternatively, the parts h, i may be connected by toggle links having a central operating knob. Further, the parts h, i may be slidable apart against spring-action and operated by a toggle-link arrangement. Instead of the toggle-links, a slidable plate having cam slots engaging pins on the parts h, i may be employed.
    • 4. 发明专利
    • Improvements in or relating to Machines for Stripping and Cleaning the Fibrous Part of Leaves or Stems and Separating from same the Pulp or Woody Part thereof.
    • GB190507288A
    • 1906-04-06
    • GB190507288D
    • 1905-04-06
    • BURROWS TAYLORSMITH WILLIAM MCGREGOR
    • BURROWS TAYLORSMITH WILLIAM MCGREGOR
    • 7288. Burrows, T., and Smith, W. M. April 6. Breaking and scutching apparatus; heckling-machines ; obtaining fibres.-A machine for stripping and cleaning the fibrous part of leaves or stems of hemp, banana, &c. and separating therefrom the pulp or woody part is constructed with a revolving cylinder a provided with equi-spaced combs or hackles d inclined backward so as to comb away the pulpy matter without injuring the fibres. The leaves, fed by rollers h, are pressed into the combs by revolving blades e, or brushes, which are driven positively by gearing from the cylinder shaft and engage between the combs. The material is retained in contact with the comb cylinder by a fixed plate, and is taken off by a roller n constructed with brushes and steel plates n alternating, and working in conjunction with a rubber-covered roller r. The rear ends of fibres escaping from the feed-rollers are carried round opposite the plate p, which keeps them in contact with the combs while the roller n draws them up. One or more of the combs are replaced by lifting- plates m and cleaning-brushes t for the fibres, and the combs are cleaned by a fixed or revolving brush s. A perforated tube q may supply a stream of water. The roller n is driven by a chain o from the feed-rollers, which are driven by gearing from the cylinder shaft. In some cases, instead of the material being passed through the machine, it is presented first at one end and then at the other, the feed-rollers being fitted with reversing-gear i, i controlled by a pedal lever l.