In the District Court of the United States, for the Eastern District of Pennsylvania, the United States of America, petitioner, vs. Motion Picture Patents Company, et al., defendants (1914)

o7S, isa intermittently rotate the drum and move the film through the tension device, whereby a very small and light drum may be employed and a positive intermittent motion imparted 5 to the film so as to avoid racking and jolting of the mechanism and unnecessary wear and strain upon the film, substantially as described. 3. The combination with a film or strip, of :o a tension device for' yieldingly holding said film, a drum engaging the film, a wheel rotating with said drum and provided with peripheral slots or recesses, a rotating element provided with a lateral projection adapted to »5 successively enter the slots and engage portions of the wheel during a small portion of each revolution so as to intermittently rotate the drum and move the film through the tension device, and means for holding the drum 20 and slotted wheel stationary during the greater portion of each revolution of the rotating element and for alining said wheel so as to permit the projection to readily enter the slots, whereby a very small and light drum 2$ maybe employed and a gradual start-andstop intermittent motiori imparted to said drum so as to avoid racking and jolting of the machinery and unnecessary weac and strain upon the film, sul>stantially as de 30 scribed. 4. The combination with a film or strip, of a tension device, a drum engaging the film so as to draw or force the same past said tension device, a peripherally-slotted wheel ro 35 tatingwith the drum and provided with concave depressions between said slots, a rotatingelcment provided with a lateral projection adapted to enter the slots and engage portions of the wheel so as to intermittently ro 40 tate the same, and a disk or circular plate having a recessed portion adapted to engage the depression in the slotted wheel, whereby a very light and small drum may be employed and a gradual start -and -stop intermittent 45 motion imparted to said drum so as to avoid racking and jolting of the. mechanism and unnecessary wear and strain upon the film, substantially as described 5. The combination with a film or strip, of t;o a teusion device, a drum engaging the film so as to draw or force the same through said tension device,a peripherally and radially slotted or recessed disk or wheel rotating with said drum and provided with concave depressions 55 between said slots, a rotating element provided with a projection adapted to successively enter the slots and eugage portions of the wheel so as to intermittently rotate the same, and a disk or circular plate having a 60 peripheral recessed portion positioned with respect to the projection so as to permit rotary motion of the slotted wheel and having its periphery adapted to engage the depressions in said slotted wheel so as to hold the 65 drum stationary for an interval of time in excess of the interval of rotation, whereby a very light and small dm m may be employed and a gradual start-aud-stop intermittent motion imparted to said drum so as to avoid racking and jolting of the mechanism and un 70 necessary wear arid strain upon the film, substantially as described. G. The combination with a film or strip, of a feed-drum engaging the film so as to impart movement thereto when rotated, mechanism 75 for rotating said drum, a tension device through which the film passes, a second drum engaging the film so as to move the film forward through said tension device, a peripherally-slotted wheel rotating with said latter 80 drum and provided with concave depressions between said slots, a rotating element of greater diameter than the slotted wheel provided with a Literal projection adapted to enter the slots and engage portions of the wheel 85 so as to intermittently rotate the same, and a recessed disk or circular plate having its periphery adapted to engage the depressions in the slotted wheel so as to intermittently hold said wheel stationary, whereby a very 90 light and small drum may be employed and a gradual start-and-stop intermittent motion imparted to said drum so as to avoid racking and jolting of the mechanism rind unnecessary wear and strain upon the film, substan 95 tially as described. 7. The combination with a film or strip, of afeed-drum engaging the film 90 as to impart movement thereto when rotated, a tension device through which thefilm passes, mechan eoc ism foffconstantly rotating the drum so as to provide slack on one side of the tension device, a second drum engaging the film so as to move said film forward through said tension device, a peripherally-slotted wheel to toj tating with said latter drum and provided with concave depressions between said slots, a rotating element comprising two disk-like portions, one of which has a lateral projection adapted to enter the slots and engage por 1 10 tions of the wheel so as to intermittently rotate the same, and the other with a peripherally-recessed portion located adjacent to the projection so as to permit rotary motion of the slotted wheel and having its periphery 115 adapted to engage the depressions in said slotted wheel so as to intermittently hold said wheel stationary, whereby a very light and small drum may be employed and a gradual atart-and-stop intermittent motion imparted 120 to said drum so as to avoid racking arid jolting of the mechanism and unnecessary wear and strain upon the-film, substantially as described. 8. The combination with a film or strip, of 125 a tension device, a drum engaging the film so as to draw or force the same past the tension device, a peripherally-slotted wheel rotating with said drum and provided with concave depressions between said slots forming a sub 130 stantially Maltese-cross-shaped wheel, a rotating element provided with a lateral projection adapted to enter the slots and engage portions of the wheel so as to intermittently