US406055A - Fan attachment - Google Patents

Description

(No Model.)

A. W. MOOOMAS & H. A. PITZHUGH.

FAN ATTAGHMENT.

No. 406,055. Patent-ed July 2, 1889.

UNITED STATES PATENT OEEicE.

TEXAS.

FAN ATTACH MENT.

SPECIFICATION forming part of Letters Patent No. 406,055, dated July 2, 1889. Application filed May 16, 1837. Serial No. 238,413. (No model) To all whom it may OOILU/Jl'lb:

Be it known that we, ARTHUR W. MetToMAs and HENRY ALEXANDER FrrzHUoH, citizens of the Ynit ed States, residing at Austin, in the county of Travis and State of Texas,have invented certain new and useful Improvements in Fan Attachments; and we do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our present invention is an improvement in fans, and has reference particularly to the application of the same to sewing-machines, where the vibration of the fan is brought about by the movement of the feet of the operator at said machine or other means used in giving movement in the act of sewing. The frame for the support of the operating mechanism of the fan is clamped to the table or top of the sewing-machine by means of a device which takes hold of said table or top and holds on with the aid of a clampingserew. Said clamping device is provided also with a disk having a segmental slot,which fits upon a corresponding disk at the bottom end of the supportilig-frames upright. The disks mentioned are held together to secure the frame to the properinclination and the fan to proper position with reference to the operator.

It is unnecessaryin this application to more particularly describe the functions of the clamping device, as this has been done in one of our previous applications. The frame of the fan in this application is composed of an upright rod, and at right angles to it we hinge an arm which carries at its end the fan, and between said end and the upright the several parts composing the means of transmitting motion from the sewing-machine pulley to the said fan. The upright and the hinged arm extending from it are braced together by a rod hinged at one extremity to the arm and at the other to an adjustable clip secured adjustably to said upright. The internal angle formed by the upright and the said arm may be reduced by means of said clip, which is moved on said upright of the frame and secured at given points by means of a thumb- ,s ew. Through tl iea 'encyv of the clamping e f bl i 'ht ind 1e ad.-

from the outside plat d n wit .tlielia lr. l suppo justable clip the supporting-frame and fan which it carries may be brought near or more distant from the operator at will.

l pon the arm of the frame, near the upright,a bracket of U shape is secured,and to this bracket and the said arm are journaled a shaft carrying a spur-wheel and one carrying a pinion, the two said gear-wheels being in engagement together. ()11 the end of the shaft which carries the pinion aforesaid is so cured a pulley-wheel, which is connected to the pulley-wheel. of tho sewing-machine by a belt or band. Upon the shaft just mentioned carrying the spur-wheel, is fixed a crank, which connects with a pitman-rod, to be again mentioned. Near the extreme end of the arm of the frame-support for the fan is secured a second U-shaped bracket, between which and.

the said arm are journalcd two shafts-one carrying an oscillating spur-wheel and the other a pinion meshing with said oscillating wheel. From the anis of the said oscillating wheel radiates an arm provided with holes, in which may be adjusted and fixed the pitman previously mentioned, which connects the crank on which it is placed with the said os cillating wheel.

The fan is secured to an arm which forms the continuation of the shaft which carries the pinion at the end of the arm of the supporting-frame.

The frame of the fan is formed of heavy wires or light rods secured to fixed wheels or disks secured to the rod which forms the continuation of the pinion-carrying shaft at the end of the supporting-frame. Two of these wires are secured at two points in each of the said dead pulleys. Dropping downward, each set of wires converge and unite at the upper line of the fan, where a horizontal rod is placed as a stretcher for said fan-frame. The double wires now drop down parallel to each other and meet; a zigzag wire which forms the bottom of the fan. Any suitable material maybe stretched upon the lower part of the fanframe, and when so stretched the tan takes a corrugated form. To the radiating spokes of the balance-wheel of the sowii1g-machine, ,we secure a band-wheel,

IOO

the sewing-machine is secured to the spokes of the sewing-machi ne balance-wheel by th reequartcr staples, the short ends of which hook around said spokes, and the long ends of said staples are screw-threaded to receive suitable nuts, which are driven up against the said band-wheel and clamp it to the balance-wheel aforesaid.

In our drawings, Figure 1 is a front elevation of a sewing-machine and our improved fan applied to the same. Fig. 2 is a side elevation of the sewing-machine and the supporting-frame, fan, (to. Fig. Sis a detail showing the manner of securing the pulley to the balance-wheel of the sewing-machine. Figs. 4 and 5 show details of our improvements.

Similar reference-letters indicate like parts in all of the figures.

Referring to the drawings, A is the body of the clamping device to secure the supportingframe of the fan to the sewing-machine table.

B is the disk, a part of said body.

0 is the clamping-screw, which enters said body A and drives the follower of the lower jaw up against the under side of the table.

D is the upright of the supporting-frame, curved at the top, and E is the arm, hinged to said upright at a.

F is a rod pivoted to the arm E and the clip Z). The said clip is provided with a thumbscrew to secure the said rod F to proper adjustment for the support of the arm E.

G G are U-shaped brackets, which, together with. the horizontal arm, form bearin gs for the gear-wheels, hereinafter to be de scribed.

H is a shaft carrying the band-wheel I and a pinion J. Said band-wheel connects by a band K to a pulley secured to the balancewheel of the scwingmachine.

L is a shaft carrying a spur gear-wheel M, meshing with the pinion J and a crank N.

O is an oscillating spur-wheel on a shaft 1, and radiating from the axis of said wheel is the arm Q, provided with holes for adjustment purposes.

R is a pitman, which connects with the crank N and adj ustably secured to the arm Q.

S is a small wheel journaled at the end of the arm E, which meshes with the wheel 0. The shaft which carries the small wheel S is extended to receive fixed wheels T T, from which drops the skeleton frame-work which supports the fan.

The hanging frame is composed of four wires or rods 0 c d d, secured to the fixed wheels T T, which wires converge in pairs and meet one or more wires or rods f, and these latter form the upper part of the frame proper of fan. Other wires 6 a drop vertically from the intersection of the converging wires and the wires f. The wires e e are united at their lower ends by a heavy zigzag wire g.

The fan-frame, when covered with suitable material, forms itself in corrugating lines and surfaces.

In the V-shaped spaces formed by the wires or rods 0 c d d we arrange wire net or scroll work for bracing purposes.

To the spokes of the balance-wheel \V of the sewing-machine we secure the band-wheel V, and the devices used to secure said bandpnlley to said wheel are three-quarter staples 6. These staples pass transversely through the rim of the band-wheel V and hook upon the radiating spokes of the bat ance-wheel \V. The long ends of the staples i are screw-threaded to receive nuts, which, as previously stated, clamp the two said wheels as one. As many of these staples are used as the balance-wheel contains spokes.

It is unnecessary to describe the operation of the fan in this application, as it has been made clear that the same power used in op erating the sewing-machine serves simultaneou sly to drive the machinery operating said fan. In order that the upright of the frame for the fan may be prevented from leaning toward the sewing-machine and interfering with the operator, we have in practice found it advisable to provide a means of bracing the said upright with reference to the sewingmachine table. The brace for this purpose consists of a rod J bent in triangular form and provided with a base a covered with rubher to form a non-slipping rest. The apex of the triangular brace is hinged to the lug of an adjustable sleeve set upon said upright, where, to given positions, it may be secured by a thumb-screw.

\Ve are aware of the patent of Clark, No. 359,550, which shows a means of uniting a pulley to the arms of a wheel, wherein a bracket as a part of the pulley and U-shaped screw-threaded clip are used to take hold of the arms of the wheel and hold the pulley and wheel as one; but to such we make no claim.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

The combination, with the sewing-machine table and the upright of the fan-supporting frame, of the triangular brace provided with a rubber-covered base hinged to a sleeve adjustably fitted upon said upright, as and for the purpose set forth.

In testimony whereof we affix our signatures in presence of three witnesses.

A. W. MOOOMA S. HENRY ALEXANDER. FITZHUGH.

\Vitncsses:

0. M. BALL, T. J. \VORTHAM, R. P. DANIEL.

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