US300283A - rowlands - Google Patents

Description

(No Model.)

J. R. ROWLANDS.

DRIVING MEGHANNM FOR FAN BLOWERS. No. 300,283.

Patented June 10, 1884.

n. PEIIRS. Fhotoumv n iwn Wamington. 11.9.

UNITED STATES PATENT rrrcn.

JOHN R. ROW LANDS, OF BROOKLYN, NEW YORK, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO HENRY F. READ, OF SAME PLACE.

DRIVING MECHANISM FOR FAN-BLOWERS.

SPECIFICATION forming part of Letters Patent No. 300,283, dated JunelO, 1884:.

Application filed March 10, 1884. (No model.)

To (LZZ ZU-7L-072L 236 may concern.-

Be it known that 1, JOHN E. ROWLANDS, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Driving Mechanism for Fan- Blowers, of which the following is a specification.

My invention relates to the mechanism employed for driving blowers of comparatively small sizesuch as are largely used for small forges-by hand-power; and an important object of my invention is to provide a simple and inexpensive arrangement of mechanism capable of operation either by a frame which is rocked back and forth by a hand-lever or by a hand-crank capable of being rotated continuously in one direction, either being used at the will of the operator.

The invention consists in novel con1binations of parts and details of construction, which are hereinafter described, and pointed out in the claims, and whereby provision is afforded for convenience of adjustment in the several parts of theapparatus.

In the accompanying drawings, Figure 1 is a side elevation of a blower and my improved driving mechanism for operating the same. Fig. 1* is a plan view of an operating-lever. Fig. 2 is a sectional elevation in a plane at right angles to the side view, Fig. 1; and Fig. 3 is a detail sccti onal view upon a larger scale, and hereinafter described.

Similar lettersof reference designate corresponding parts in all the figures.

A designates a small base piece or plate,

, whereon is secured a blower, 13, which may be of any wellkn'own or suitable construction. Upon the said base or plate A is erected a standard or column, 0, which in this example of my invention is round andturned cylindric throughout a portion or all of its height.

Upon the standard or column 0 is fitted a sleeve or collar, D, which is capable of adjustment vertically and by turning on said standard, and which may be secured, after adjustment,by means of aset screw, a, or otherwise. The sleeve or collarl) has at right angles to its axis a second socket, D, which serves as a bearing for a fixed pin or shaft, Z), whereon are mounted a large pulley, E, and a small chain wheel or pulley, c, the two being rigidly fixed together, so as to turn as one upon the fixed shaft, 'arbor, or pin 12. In lieu of this, said pulley E and wheel 0 might be fast on the shaft or pin 6, andthe latter would in such case turn freely in a longer socket or bearing, D. y

The blower B is operated byabelt or band, (I, from the pulley E, and by adj ustingthc sleeve or collar D upward on the standard G the belt or band (1 maybe tightened, while by turning said sleeve or collar on said standard the pulley E may be brought into the same plane with the pulley on the fairsliaft, so that the belt (1 will run truly.

Above the sleeve or collar D is a second sleeve or collar, 13, which is also fitted to the.

column or standard G, and capable of adj 11stment thereon both by raising and lowering it and by turning it, and in said sleeve or collar is a set-screw, e, or some other suitable device whereby it may be secured in place on the column or standard after adjustment. The sleeve or collar F is provided with a hub or cylindric socket, F, at right angles to its axis, which forms a bearing for a short shaft, f, and on the one end of said shaft f is secured a wheel, F, (here shown as a chain or sprocket wheel,) and from which a chain, f, drives .onto the wheel 0, which is on the pin or fixed shaft b. y

In lieu of making the wheel F and the small wheel 0 in the form of chain or sprocket wheels, they may be smooth-surfaced pulleys, and a belt may be substituted for the chain f. The chain and chain-wheels are, however, very advantageous, as they avoid any slip. By raising the sleeve or collar F on the standard or column 0 provision is afforded for tightening the driveehain f, orabelt which may be substituted therefor, and by turning the sleeve or collar on the standard or column provision is afforded for bringing the wheel F accurately into line with the wheel 0, so that the chain f or the substitute belt will operate properly.

The hub or socket F, which constitutes a bearing for the shaft f, has at its end a tubular extension, f and beyond the latter is a ratchet-wheel, G, from the outer side of which projects a small ratchet hub or sleeve, 9, and which is secured fast to that portion of the shaft f projecting beyond the tubular extension f H designates a rocking frame fulcrumed upon the tubular extension f and counterbalanced by a weight, h, which may be adjusted upon an arm, h, projecting from the eye or hub of said rocking frame, as best shown in Fig. 2. The rocking frame H is of segmental form and carries at its upper part a pawl or pawls, which take into the ratchet-wheel G and serve to drive said whcel when the rocking frame is moved in one direction,while they move idly over the said wheel when the rocking frame is moved in the reverse direction. A single pawl will serve to drive the said ratchet-wheel G; but I have here shown two pawls, i 2*, which are pivoted to the frame H, and are so set or spaced relatively to the wheel G that when one is in engagement with atooth of the wheel the other will be between two teeth. The teeth of the ratchet-wheel G may then be made quite coarse and strong, and yet the frame II will never have to move more than half a tooth-space to bring one or other of the pawls t i into action.

I I designate the operating-lever, which is composed of two parts pivoted together at i, for a purpose hereinafter described. The portion I of the lever is curved downward, and at the end is fulcrumed to a post or projecting arm, t, on the socket or hearing F. The

' portion I of the operating-lever is connected by a link, with the rocking frame H, as most clearly shown in Fig. 1. The endof the portion I of the lever beyond the pivot i is flattened, so as to form an extended horizontal bearing, 73', for the lever portion I to swing on, as best shown in Fig. 1*, and the latter has a lip or tongue, i which underlies the portion i" and prevents the portion I from being raised independently of the portion I. An operating-lever made of a single rigid piece would serve every purpose of the lever I I,- so far as rocking the frame His concerned; but the pivot 6 enables the portion I to move slightly in a horizontal plane, as would be natural to a person operating it. The reciprocating movement imparted to the rocking frame H causes the pawls i i to act on the wheel G when the frame is moving in one direction only; but the momentum of the wheels F E and the momentum of the fan will produce a continuous movement of the fan.

In some cases it may be desired to turn the shaft f by means of a hand-crank, and Itherefore preferably provide a crank, J, the eye of which is bored out large enough to fit the small ratchet-sleeve g loosely, as shown in Fig. 2, and in the detail view Fig. 3. In the crank J is a pawl, 3*, which is so constructed and pivotedthat when the hand-crank hangs down, as shown, the weight of the pawl will cause it to drop back clear of the teeth of the ratchet g, as is shown clearly in Fig. 3. The crank J hangs loosely in that position so long as the shaft f is turned by the rocking frame H and its pawls; but if it is desired to use the crank J it is turned in the direction of the arrow, Fig. 3, and a very slight movement from its depending position will cause the pawl i to drop into engagement with the teeth of the ratchet g, and so long as power is applied through the crank the pawl j* will retain its hold on said ratchet-teeth, and will operate the shaft f.

The crank J may be retained on the ratchet g by means of a screw, K, inserted in the end of the shaft f, as shown in Figs. 1 and 2.

I am aware that a ratchet wheel having V-shaped teeth has been formed with concentric rims on the sides, and that two pawlboXes have been arranged to slide on these rims, and have been operated by means of a hand-lever and two links. In each of these pawl boxes was arranged a pivoted pawl which could be adjusted so as to engage with and turn the wheel when the pawl-box was moved inone direction'or the other direction, as desired. The particular purpose of this combination was to transmit power from the hand-lever when moved both up and down, the pawl in one boX acting when the lever is moved up, and that in the other box acting when the lever is moved down. I make no claim to a combination of this sort. In my apparatus I use a frame, H, which is fulcrumed on and can turn loosely on the shaft of the ratchet-wheel, or on the tubular extension f 2 of its bearing. I use an ordinary ratchet-wheel and an ordinary pawl or pawls, which act only when the frame moves in one direction. I make the teeth of the ratchetwheel Very long and strong; and in order that there shall not be too much lost motion I arrange the pawls on the rocking frame so that one or other will always be brought into gear by a movement of the frame equal to half a tooth of the wheel.

What I claim'as my invention, and desire. to secure by Letters Patent, is-

1. The combination, with a fan-blower and a driving pulley or wheel from which the fan is operated, of a standard or column, and'a bearing for the shaft of said pulley or wheel, capable of vertical adjustment thereon, substantially as herein described.

' 2. The combination, with the blower B and the wheel or pulley E, of the standard or column O, the sleeveor collar D, adjustably secured to said standard or column, and provided with the bearing or socket D, and the shaft or pin 12, supporting said wheel or pulley and supported in said bearing o'r socket D, substantially as herein described.

.3. The combination, with a standard or column, of an upper shaft and means for rotating it, a lower shaft and a driving wheel or pulley thereon, wheels or pulleys, and a chain or belt for transmitting rotary motion from said upper shaft to the wheel or pulley on said lower shaft,

and bearings for said upper and lower shafts, capable of vertical adjustment on said standard or column, substantially as herein described.

4. The combination of the standard or column O, the sleeves or collais D F thereon, comprising the cross hearings or sockets D F, means for adj ustably securing said sleeves or collars on said standard or column, the shaft 2) in said bearing D, the shaft f in said hearing F, means for rotating said shaft f, the wheel E on the shaft I), and the wheels F c, and a chain or belt for transmitting motion from the shaft f to the wheel E, all substantially as herein described.

5. The combination, with a shaft, f, and,

ratchet-wheel G thereon, of a bearing, F, provided with a tubular extension, f, a rocking frame, H, fulcrumed upon said tubular extension f, and carrying a pawl or pawls engaging with said wheel G, and a hand-lever for rocking said frame, substantially as herein de scribed.

6. The combination, with the shaft f and ratchet-wheel G, of the rocking frame H, fulcrumed about said shaft, devices for rocking said frame, and two pawls, i 2 pivoted on said frame, and capable of acting on said wheel when the frame is moved in one direction only, said pawls being so arranged relatively to each other that one or other will always be engaged with said wheel by a movement of said frame in the proper direction equal to half a tooth of the wheel, substantially as herein described.

7 The combination, with a shaft, f, and ratchets G g fast thereon, of a rocking frame and a. pawl or pawls for turning said shaft through the ratchet G, and a gravity-crank loosely surrounding the ratchet g, and carryin g a pawl capable of being engaged therewith when desired, substantially as herein described.

8. The combination, with a shaft, f, and ratchets G 5/ fast thereon, of a rocking frame and a pawl or pawls for turning said shaft through said ratchet G, and a gravity-crank, J, loosely fitting said ratchet g, and provided with a gravity-pawl, j capable of engaging automatically when said crank is moved, substantially as herein described.

9. The combinatiomwith a shaft and ratchetwheel, f G, and a rocking frame, H, carrying a pawl or pawls for engaging with said wheel, of an operating-lever fulcrulned at one end, and a link connecting said lever with said rocking frame, substantially as herein described.

10. The combination of the shaft and wheel f G, the rocking frame H and its pawl or pawls, the arm 6 the lever composed of. the parts I I, pivoted together and fulcrumed to said arm '5 and the link t connecting the lever portion I with said frame H, all substantially as herein described.

11. The combination, with a shaft, f, and a ratchet-wheel, G, fast thereon, of a rocking frame and a pawl or pawls for engaging with said wheel G, a second ratchet-wheel concentric with the wheel G, and a gravity-crank supported concentrically to said shaft, and carrying a pawl capable of being engaged with said.

second ratchet-wheel when desired, substantially as herein described.

JOHN R. ROXVLANDS.

WVitn esses:

FREDK. HAYNES, O. HALL.

Images