Patent GB-190210604-A (GB)
Title: Improvements in Chain and Toothed Gearing.
Inventor: MORSE FRANK LINCOLN
Filed: 1902-05-08
Granted: 1903-04-16
Abstract: 10,604. Morse, F. L. May 8. Driving-chains.-The invention relates to chains of that class in which links are made up of series of plates, and the pins are each in two parts, one adapted to rock upon the other. Referring to Figs. 8, 9, 10 and 11, the links are arched to fit over the wheel teeth, with which the alternate links 3 alone engage. These links may engage at both ends, either by their inner or their outer faces or by both ; or one end of the links only may be operative, the other being formed with a projection to rest on the wheels. The seat pins 6 are shouldered and riveted in the outer plates 5, with their plane sides facing each other and perpendicular to the length of the links; their rear surfaces are non-circular and engage in corresponding openings in the inner plates 4. The rocker-pins 7 may be engaged in the plates 3 in the same way, but, preferably, they have circular backs. Ample clearance is made in the eyes of one set of plates to clear the pin secured in the other set and, preferably, the clearance is increased towards the middle of the pins. In the chain shown in Figs. 21, 22, 23, 24, 25, 27, and 31, all the links engage the wheel teeth, but at one end only, where they have both inside and outside engaging-faces ; the other end of each link works entirely free of the teeth. The engaging ends of the links may be made thicker than the opposite ends. The outer plates 16 are off-set to lie one inside the next, and the outer part is folded over at 20 to give additional thickness for supporting the pin, which is shouldered to engage in a small eye in the part folded over. Spring or other latches 25 may be pivoted between the folds to engage in nicks cut in the pins ; this construction may be used for coupling the end links only, or throughout the chain. The seat pins have their faces all in one direction and perpendicular to the line of pull ; the rocker pins may be replaced by projections in the eyes of the links. The pins may be modified so as to make contact over a considerable area when the chain is straight. Fig. 31 shows such a construction, in which the flat surface of the rocker-pin beds upon the flat surface of the seat pin. Fig. 34 shows a modification in which the surfaces are rounded, and Fig. 33 shows the application of this system to a three-part pin. In the chain shown in Fig. 31, the seat-pins 6 fit under shoulders in the eyes at the non-engaging ends of the links, and the rocker-pins 7 fit in non-circular seats in the opposite ends ; the non-engaging ends 31 are formed with projections 39, which make contact with the first tooth of the driving-wheel at the same time as the engaging surface of the preceding link. The chain-wheels are made with teeth extending across the entire periphery, and provided with guiding-flanges at their outer ends, projecting either above, as in Figs. 35, 36, or at the side, as in Figs. 37, 38. Another form of wheel is composed of a flexible strip of teeth formed either of sheet metal with the teeth struck up therefrom, as shown in one modification in Figs. 39 and 40 and in another in Figs. 45 and 46, or of a series of blocks 76 connected by links, Figs. 47,48, or of a series of links with teeth, as shown in Figs. 51 and 52. These wheels may be used for toothed gearing.