US323677A

US323677A - Steam fan-blower

Info

Publication number: US323677A
Authority: US
Publication date: 1885-08-04
Anticipated expiration: 1902-08-04

Description

(No Model.) 2 Sheets-Sheet 1. J. O. HBNDRY.

STEAM FAN BLOWER. No. 323,677. Patented Aug. 4, 1885.

(No Model.) 2 Sheets-Sheet 2.

J. 0. HENDRY. I

STEAM PAN BLOWER. No. 323,677. Patented Aug. 4, 1885 Q Q Jrv aflezvir N. PETERa PhowLiihcgmphar. Walhington, D. C

UNITED STATES PATENT Orrrcn,

JOHN G. HENDRY, OF BOSTON, MASSACHUSETTS.

STEAM FAN-BLOWER.

SPECIFICATION forming part of Letters Patent No. 323,677, dated August 4, 1885.

Application filed July 5, 1884. (No model.)

To all whom it may concern:

Be it known that I, JOHN G. HENDRY, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Steam Fan-Blowers, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to a fan-blower of that class in which the fan and its actuating mech anism constitute a single piece of apparatus; and it has forits object to makethe blower and engine more compact, efficient, and durable than those now in use. In most cases, when the actuating engine and fan have common frame-work or constitute a single apparatus, the engine acts directly on the shaft of the fan, and in such construction the speed of rotation of the fan is limited to the speed that the engine-piston can attain, and it is necessary to have a larger-sized fan for a given capacity or to deliver a given amount of air than it would be if there were no such limitation to the speed of rotation of the fan. When belting or gearing has been employed to increase the speed of the fan-shaft above that of the engine-shaft, the belting has been a source of trouble on account of slipping, and gearing is noisy, and gives trouble on account of wear and resulting improper fitting.

My invention consists in the combination, with a base or frame-work, of a case for the fan mounted on the said base, and with it constituting a single frame-work, andan engine rigidly connected with the said frame-work, so as to be securely held in definite position with relation to the fan, the said engine having an actuating-pulley in the same plane with the pulley on the fan-shaft and of larger diameter, and the blower-case having fastened upon it two intermediate pulleys or idlers over which the belt for transmitting movement from the engine-pulley to the fan-pulley passes, for the purpose of giving increased contact-surface between the fan-pulley and belt in the wellknown manner. The 'idlers are preferably adjustable on the case or frame-work of the blower to facilitate the maintenance of the belt at the proper tension.

Figure 1 is a front elevation of a fan-blower embodying this invention, and Fig. 2 an end elevation thereof.

The blower-case a, having the outlet-opening in for the delivery of air, and inlet-opening c in its side, with a'bracket or pedestal, d, in the said opening constituting a bearing for the shaft 6 of the fan f, may all be of suitable or usual construction, the said case being supported on and rigidly connected with a bed or base, 9. The said base and the case have rigidly connected with it a supporting-bracket, h, for an engine, 1', of usual construction, actuating a shaft, It, provided with a belt-pulley, m. The engine frame-work and blower-case or supporting frame-work for the fanshaft thus constitute a single member or frame work rigid throughout, and there is no possibility of the shaft 16 and pulley m becoming displaced in relation to the fan-shaft c and pulley a thereon, which pulley is in plane of the actu- 7o ating-pulley, m, and of smaller diameter, so that when the pulleys m a are connected by proper belting the latter runs at a higher speed than the former, the ratio being preferably about two or three to one.

In order to give the connecting-belt 0 between the pulley m and n the proper amount of frictional contact with the said pulleys, so that it will not require an excessive tension in order to operate without slipping, the said belt is carried over intermediate pulleys or idlers, p having their bearings in hangers r mounted upon plates t securely fastened to the case a, so that the said idlers will also maintain the proper position with relation to the other pulleys. The hangers 1' are adjustable by means of the set-screws a, or equivalents, to enable the belt 0 to be maintained at the proper tension, and when properly adjustediare rigidly secured by bolts to, which 0 pass through-elongated openings for the hang v ers to admit of the adjustment.

In a fan-blower constructed as described the fan receives a high speed of rotation with a comparatively low piston speed in the engine, thus enabling an apparatus of much smaller size to deliver a given amount of air than when the engine acts directly on the fan-shaft, and the speed of the latter is consequently limited to the speed that the engine can attain; but r00 the apparatus has all the advantages of one in which the engine acts directly on the fanshaft-namely, steadiness of operation, compactness and portability, with equal or in- 5 creased durability.

I claim The combination of the base and blowercase fixed thereon forming a single rigid framework, with the fan-shaft and attached pulley IO and actuating-engine fixed to the base with its pulley-shaft having its pulley below and in the same vertical plane with the fan-shaft pulley and of greater diameter than said pulley, both the said shafts having their hearings on JOHN C. HENDRY.

\Vitnesses:

Jos. P. LIVERMORE, W. H. SIcs'roN.