US247517A - Bellows - Google Patents

Description

(Modem SA.G.REBD.

BELLOWS. l

`Patented Sept. Z7., 1881.

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" UNI-TED STATES PATENT Orifice.;A

SAMUEL G. REED, 0F NEWTON, MASSACHUSETTS.

BELLows.

SPECIFICATION forming part of Letters Patent No. 247,517, dated September 27, 1881,

' Application ined February 14, 1881. (Model.)

To'all whom it may concern Be it known that I, SAMUEL G. REED, of Newton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Bellows, of which the following is a specication.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure lis a front elevation of a bellows and operating mechanism embodying myinvention. Fig. 2 is a vertical section of the same upon Fig. B'is a vertical section, taken at a right angle to that of Fig. 2, of the bellows proper, with the valve raised so as to operate the same. Fig. 4 is a section upon line z z, Fig. 1, showing adjacent parts, a portion being represented as broken out, the better to illustrate the invention.

a and a' are respectively the upper and'lower portions of a double-acting bellows. b is the top; c, the bottom, provided with the opening c', and d d the central partitions or partition having the opening d. a is the outlet or communicating pipe carrying the blast of air to the desired place. v

e is a hemispherical or spherical rubber valve secured to the under side of the spring e', mounted upon blocks e". Aohain,f,extends from the valve e to a similar valve, g, secured to the top of the rod h, which is provided with a rack, h', meshing into cogs upon thel wheel k, supported by the shaft k. It will be noticed that the cogs upon the wheel k are in two sets, opposite each other, the rest of the periphery being plain. l is a guide-rod running in the guides l Z.

m is a horizontal rod, one end ot which is secured to the top b, (which is usually weighted,) and. the other end to the vertical rod m,which is held by the lever n, pivoted to the post nf, and runs in the tube m.

fu is an unwinding-barrcl, and fw a pulley for accommodating a weight for supplying power.

The operation of my device is as follows: Power of any kind having been applied to the shaft 7c', the wheel 7c,which is fixed thereupon, turns, and the cogs engage the rack h', raising the rod h, (which is guided by means of l l l,) andconsequently the rubber valve g. The raising of the rod h and valve g slackens the chain f, thus allowing the valve e to be raised from the opening d by means of the springvc, as seen in- Fig. 3. The valve g reaches the opening c', makes a tightflt therein on account ot' its shape and material, and, pushing up the bottom c, forces the airfrom the lowerinto the upper chamber, and thence into the pipe a. As the wheel 7c turns and the cogs pass the rack h' the plain portion of the wheel is reached, and the rod suddenly drops into the position shown in Fig. 2, straightening the chain and pulling the valve c down into the opening d in the partition d. The cogs on the opposite side of the wheel then engage the rack, and the operation is repeated. When the rod h rises, as above described, and about asits valve g reaches the bottom c, the project-ion n lifts the lever n, and hence the rods m and m,which assist in raising the top b, (which is usually weighted,) thus obviating the necessity of the air doing all the work. When the rod h drops and the valve c closes, theweight of the top b presses out the air in the upper chamber into the pipe a. Thus the bellows is rendered double-acting.

Of course two, three, or more bellows may be applied to the shaft lc', and their wheels k so arranged that one or more will always be sending air into the common pipe, thus securing a steady flow..

In order that a steady friction or labor may be applied to the actuating-wheel, so that it may notjump when the cogs have passed the rack and the plain portion appears, I propose to apply a cum which will compensate for the absence of cogs ou certain portions of the wheel. p shows a wheel intended to run a bellows, and s a cam, `both fixed to the shaft k. A weight, t, pivoted to the post t', lies upon the cam, which is so placed as to present its projecting portion where there is the greatest radius, and consequently the most friction, at the time when the plain or blank portion oi' the wheel is presented to the rack, thus producing the desired effect-viz., the equalization of the motion of the wheelp.

The valves may be spherical or semi-spherical in shape, and are constructed of rubber or other similar elastic or iiexible substance or compound.

IOO

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

l. The combination, with the bellows a a', provided with openings c d in the bottom 0 and partition d thereof, of the elastic spherical or semi-spherical valves c g, connected by a chain or cord,f, the spring e', and the rod h, arranged to operate substantially as and for the purposes set forth.

2. In combination with the bellows a a', valves and chain e gf, and rod h, provided with rack h, and lifting-pin n, the lever n, and rods m m, the latter secured to the bellows top b, constructed and arranged substantially as and for the purpose described.

3. In combination with the rack h', secured to thelifting-rod h, and an actuating-wheel, p, havshaft k', substantially as and for the purpose 3o set forth.

SAMUEL G. REED.

Witnesses HENRY W. WILLIAMS, JOHN E. FRENNING.

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