US65887A - Improvement in tbeadle foe sewing machines and other purposes - Google Patents

Description

t @atten-gisten atmt @frn i NOEL n. DEV-0L, 0F MARSHALL, ILLINOIS. i i Letters Patent'Na. 65,887, dated .zme 18, 1867.

IMPROVEMENT IN 'IltEADLE FOB. SEWING MACHINES AND OTHER PURPOSES.

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TO ALL WHOM I'I MAY CONCERN:

Be it known that I, NOEL BVDEVOL, of Marshall, in l the county of Clark, and State of Illinois, have invented' a new and useful Improvement in Sewing lliachines;` and I do hereby declare that thefol-lowing is a full, clear, and exact description thereof, which will enable those skilledv in the art to make and use the same, reference being had tothe accompanying drawings, forming part of this specification, in which- I, y

Figure 1 is n. front view of the table or stand of a sewing machine, with my improvement applied to the same.

FigureZ, a transverse vertical section taken in the plane of the line c a?, iig. 1.

Figure 3, a detail view, to be hereinafter referred tof i Similar letters of referenceindicate correspondingparts.

The object' of the present inventionnis to prevent the machine from` being started or vrun in the wrong direction, or backward' at any time, and at the same time place the machine under the perfect control of the operator, and enable him or her, as the casevmay he, to properly start it with the utmost facility, without necessitating the use of the hands, as is new the case with machines not having my improvement applied to them.

A, in the drawings, representsthc ordinary table or stand of a sewing machine, and B its operating or dri-virigshaft,.havinga crank, C, which-through tu connecting or Pitman-rod, D, is connected with ene endof the treadle, E, suspended and swinging upon a centro orfulcrum-shaft, F,'ot` the standards G, as is usual in i sewing machines. H, a ratchet-whecl secured t'o crank-shaft B, and turning in common with it. I, an arm v Vhung upon crank-shaft B to onisidc of itsl'ratchet-whecl'I-I, on which arm is hung a spring-pawl, I2, in proper position to engage with the teeth ofthe ratchet-wheel H, when the arm I, to which it is hung as described, is pulled or swung downward, by bearing with the foot upon the supplcmentarytreadle J, connected with thesad arm `through a pitman or .connecting-rod, K, this supplementary treadle J being hung and swinging upon the same fulcrum-shaft F with the ordinary treadle E. l i When it is desired to start the'sewing machine the supplementary treadlc J is dbpressed by the foot, which, 'acting through its Pitman-rod K, and the arm I, with its spring-pawl I, and the ratchet-wheel H of the drivingshaft, revolves the latter, the revolution of whigh caribe continued by bearing -or -pressing down the ordinary treadle E of the machine, as is obvious without any further explanation; the arrangement of the ratchet-whcel and its pawl,.&c., as above describedppreventiug, as is apparent, the turning of the crank-shaft Bin the wrong direction or backward, and also serving to facilitate the starting of the machine without requiring the use of the hands-advantages of the mostimportance. To limit the upward play or swing of the arm carrying the spring- -wheel of the crank-shaft B, I have extended the pitman-rod of such arm, and connecting it with the supplementary treadle, to a suicient height toward the table of the machine as to come to a bearing or stop against the under side of thel same, as plainly shown in the drawings, figs. 1 and 2, a spring, M, serving to throw back the treadle J after each depression of the-same.

I claim as new, and desire to secure by Letters Patent- The ratchet-wheel H, secured to the crank-shaft B of a sewing machine, arm l, having spring-pawl I2,

pawl for the ratchet pitman-rod K, supplementary treadle J, and spring M, or its equivalent, when all combined and arranged together so as to operate substantially as and for the purpose described.

` NOEL B.. DEVOL.

Witnesses:

BURNS ARCHER, Jns. McCann,

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