US727365A - Fan attachment for sewing-machines. - Google Patents

Description

PA TENTED MAY 5, 1903.

P. HOLZMARK. 7 FAN ATTACHMENT FOR. SEWING MACHINES.

APPLIUATION FILED FEB. 12, 1903.

N0 MODEL.

UNTTED STATES Patented May 5,

PATENT ()rmcn.

FANNY HOLZMARK, OF ST. LOUIS, MISSOURI.

FAN ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION formingpart of Letters Patent No. 727,365, dated May 5, 1903.

Application filed February 12, 1903. Serial No. 143,059. (No model.)

' To in whom it 1nd concern:

Be it known that I, FANNY HOLZMARK, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Fan Attachments for Sewing-lVIachines, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to the class of devices above referred to; and it consists in the novel construction hereinafter described and claimed.

The object of my invention is to provide an improved means for securing separate fanblades tothe fiy-wheelofasewing-machineand also to provide an improved fan-blade which will be very simple and cheap and constructed in scoop shape, so that it will throw a current of air toward the operators face.

Figure l is an elevation of a sewing-machine fiy-wheel having my invention. applied thereto. Fig. 2 is a section of edge view of same. Fig. 3 is a frontview of oneof the fan-blades enlarged. Fig. 4 is an end view of the same.

1 indicates the fly-wheel, to which the fanblades are to be attached.

My improved fan-blade is scoop shape and has a wide flange 2 extending substantially at right angles to the direction of rotation, so as to present a large area to the air, and the blade has also an integral flange 3 extending at right angles to the flange 2 and located substantially edgewise as regards the direction of rotation. Projecting from the front edge of the flange 3, near the base thereof, is an integral perforated ear 4. Said ear extends in a direction parallel to that of the base of the flange 2, and said flange is perforated near its base, and apin or bolt 5 is passed through said perforation and also through the perforation in said ear 4.. Mounted upon said pin is a coiled spring 6, having arms 7 and 8. Projecting from the base of the said flange 3 is an integral clamping-jaw 9, having a strengthening-rib 9. 10 indicates another clamping-jaw, which is located opposite the said jaw 9 and is provided with an integral 5o thumb-piece 11 and opposite perforated ears l2, and this jaw also has a strengthening-rib 12. The cars 12 are mounted upon the said pin 5 with said spring 6 between them and so that'the arm 7 of said spring presses against the inner surface of the flange 3, and the other arm 8 of said spring normally presses against the said thumb-piece 11. Said jaws are provided with leather or rubber lining 13.

The operation is as follows: One or more of the fan-blades may be used upon the sewing-machine fly-wheel; but I prefer to use at least two blades in order that one may balance the other. In the present instance I have shown three blades applied to the flywheel. In applying the blades all that is necessary is for the operator to grasp the blade and compress the thumb-piece 11 against the power of the spring 6, thereby causing the arms 7 and 8 of said spring to move toward each other and moving the said jaw 10 away from the fixed jaw!) a suitable distance to permit the rim of the fly-wheel to pass between said jaws, when the pressure upon the thumb piece should be removed, and the spring will then cause the said jaws to forcibly engage the said fly-wheel. Both jaws are of course curved to conform to the outline of the fly-wheel, as shown. After the flanges have been placed in position they will be securely held in place by' the action of the said spring and said curved jaws, but may of course be removed at any time ata moments notice. When the fly-wheel is revolved in the direction indicated by the arrow in Fig. 1, the fan-blades will be forced into contact with the air and will not only act as' an ordinary fan, but owing to their peculiar scoop shape they will concentrate a current of air and throw it laterally toward the left side of Fig. 2 in the direction usually assumed by the operators face.

This construction has proven very satisfactory in experimental use.

Having thus described my invention, what I claim as new, and desire to have secured to me by the grant of Letters Patent, is

An improved detachable fan-blade for sewing-maehines, comprising a blade made in name to this specification in presence of two scoop shape and having flanges, one of said subscribing witnesses. flanges having an integral perforated ear, a fixed jaw, and a movable jaw pivotally mount- FANNY 'HOLZMARK' 5 ed between said perforated ear and the other \Vitnesses:

flange, substantially as specified. ALFRED A. EIOKs,

In testimony whereof I have signed my JOHN C. HIGDON.

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