US1402891A

US1402891A - Belt tightener

Info

Publication number: US1402891A
Application number: US322612A
Authority: US
Inventors: Ernest S Reiland; Peter M Reiland
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-09-09
Filing date: 1919-09-09
Publication date: 1922-01-10
Anticipated expiration: 1939-01-10

Description

E. S. AND P. IVI. REILANDe BELT TIGHTENER.

APPLICATION man SEPT. 9. |919.

Patented Jan. 10, 1922.

UNITED STATES Paru rec.

ERNEST S. REILAND AND IPETER-1VI. REILAND, OF ST.,PAU,I1, MINNESOTA. i

BELT TIGHT-ENRE.

l'Application led September To all 'whomfma'y conce/rn:

ABe it known thatwe7 ERNEST REILAND and PETER M- Rimani), citizens of the United States, residing at St. Paul, county of Ramsey, and State of Minnesota, have invented new anduseful Improvements in Belt Tighteners, of which the following is a specification.

The primary object of this invention is to simplify and make more effective fan belt tighteners for automobiles whereby a fan belt is kept under continuous yielding tension to assure the utmost efficiency of the fan, said tension being easily adjusted b v f inexperienced operators.

A further object is to reduce the trouble incident to maintaining fan belts tightened and to provide a construction which is most effective and not likely to get out of order. With these and other objects in view our invention comprises the features of construction and combination of parts hereinafter more particularly described and claimed.

In the accompanying drawing forming part of this specification Fig. 1 is a front view of a portion of the engine of an automobile showing our improved attachment applied thereto. Fig. 2 is a side elevation of the structure illustrated in Fig. 1 a portion thereof being broken away and in section and the fan shown on the fan shaft; F ig. 3 is a side elevation of a portion of our improved structure showing our improved lever arm and tilting beam mounted thereon, and Fig. 4 is a section of a detail taken on the line 3-3 of Fig. 3.

In the drawing is illustrated the usual crank case A of an automobile in which is journaled the usual crank shaft 10 said crank case being provided with an upwardly projecting lug 11 having a forwardly projecting boss 12 on its side. The forward end of the crank shaft 10 carries the usual fan belt drive pulley 13 which is adapted to drive the belt 14. Our invention provides a bracket arm or lever 15 the lower end of which is pivoted by the bolt or shaft 16 in the lug 11 and is formed on its lower end with an adjusting shoulder piece 17. The upper end of the bracket arm 15 is journaled by the pin or pivot 18 by the two side bearing members 19 and 2O of tiltmg beam 21, said pivotal connection being between the ends of said beam, thus forming two lever arms extending in opposite direc- Specication of Letters Patent. Ptqgnigd J3, 1 0, 192,2

a, 1919. serial No. 322,612.

tions from the pivot 18. Upon one of these arms rwhich extends inwardly the fan-shaft 22 is journaled and to the opposite arm oneI end ofa helical retractile spring 23 is attached. The other end of thistension spring is attached to a small lug 24 formed on one edge of the bracket arm .15. The tendency of this springis to draw the outerend of the tilting beam down thus tilting the inner-end up. The fan shaft 22 which is carried by the inner end of the tilting beam has mounted thereon the driven fan belt pulley 25 and the usual fan 26. The pulley 25 is in substantial alinement with the pulley 13 and the belt 14 passes around both pulleys. The upward tendency of the inner end of the tilting beam thus draws and keeps the belt 14 tight at all times. This u ward tendency is maintained and adjustedj in strength by turning an adjusting bolt 27 which is threaded through the boss 12 and arranged so that the outer end of its shank will press against the adjusting shoulder 17 on the lower end of the bracket arm 15. The equal distribution of thej bearing between the tilting beam and the bracket arm prevents any binding tendency. The pin 18 is held in place by the split key 28. The tension of the belt can be easily and quickly adjusted by a novice and there is little likelihood of any of the parts getting out of order. The application of tension to the belt as provided by our invention is most direct and eflicient in operation and there is no fixed limit of adjustment as in prior devices. The tilting beam construction also provides a more direct method of supporting the fan belt pulley and applying tension to the belt. I

In accordance with the patent statutes we have described the principles of operation of our invention together with the apparatus which we now consider to represent the best embodiment thereof, but we desire to have it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth within the Scope of the following claims.

Having described our invention, what we claim as new and desire to protect by Letters Patent is:

1. A belt tightener, comprising, in combination, a support, a bracket arm pivoted near one of its ends on said support, an

adjusting member on said support to adjust the radial position of said arm on said pivot, a tilting beam pivoted on the free end of said arm, a pulley journaled near one end of said tilting beam, a belt engaging the pulley, and a retraetile spring connected to the opposite end of the tilting beam to tilt the tilting beam and tighten the belt.

2. A belt tiglitenen comprising, in combi-v` nation, a support, a bracket arm pvoted near one end on said support, an adjusting bolt onA said support adapted to engage said 3. A belt tightenei, comprising, in combination, a support, a bracket arm pivoted near one end on said support, an adjusting bolt on said support adapted to engage said arm and adjust its radial position about its pivot and a tilting beam having a pair of longitudinal side flanges between lits ends,

' said flanges embracing and being pivoted to the free end ofsaid arm to evenly distribute the pivot bearing between said tilting beam and arm, a pulley journaled near oneV end of said tilting beam, a belt'engaging the pulley, and a retraetile spring connected Vto the opposite end of said tilting beam and to a portion of said arm adjacent to said pivot connection to tighten the belt. l Signed at St. Paul, in the county ot Ramsey and State `of Minnesota,ptbis 4th day of September, 1919. 4 ,ERNEST S. REILAND. PETER M REILAND.