US1097093A - Belt-tightener. - Google Patents

Description

A. HAEUSER. BELT TIGHTENER.

APPLIOATION IILED JULY 12, 1913.

1,097,093, Patented May 19, 19M

-I ANDREW HnEusER: a m/bums cOLUMEIA PLANOURAI'II CO..WASHINGTON: n. L

m i QM" UNITED STATES PATENT OFFICE.

ANDREW HAEUSEB, OF FOUNTAIN CITY, WISCONSIN.

BELT TIGHTENER.

Specification of Letters Patent.

Patented May 19, 1914.

Application filed. J 1113 12, 1913. Serial No. 778,738.

To all whom it may concern Be it known that I, ANDREW HAnUsnR, a citizen of the United States, residing at Fountain City, in the county of Buffalo and State of WVisconsin, have invented certain new and useful Improvements in Belt- Tighteners, of which the following is a specification, reference being had to the accompanying drawings.

This invention comprehends certain new and useful improvements in belt tighteners and has for its primary object to provide an improved and novel form of belt tightener which may also be employed for guiding the belt.

Another object of the invention is to provide a belt tightener which may be readily adjusted at various angles to properly guide the belt while engaged therewith for the purpose of tightening the same.

A further object is to provide an improved and novel means for adjusting the belt tightener and mounting the latter in an improved form of bearing on a resiliently held frame.

A further object is to provide an improved and novel form of supporting frame and means for adjustably and resiliently mounting the same upon a stationary portion of the machine by which is carried the belt to be tightened and guided.

With the above and other objects in view, my invention consists in certain novel constructions, combinations, and arrangements of parts to be hereinafter more fully described, claimed, and illustrated in the accompanying drawings, in which,

Figure 1 is a side elevational view of my complete device in use; Fig. 2 is a top plan view thereof, parts being broken away; Fig. 3 is a fragmentary detail elevation, showing the manner in which the end of the spring for resiliently retaining the device in normal position is connected to a stationary portion of the machine; Fig. 4 is an enlarged detail cross-sectional view on the line 44 of Fig. 1; and Fig. 5 is a detail perspective view of the casting removed.

Referring more specifically to the drawings in which similar reference characters designate corresponding parts throughout the several views, 1 designates the idler or tightener properunder which the belt is engaged, it being understood that the idler is placed in the path of the belt and that the idler or tightener proper is loosely mounted upon the shaft 2 which has one end engaged transversely in one end of the bearing block 3 and held in position therein by the set screw 4. The bearing block 3 is pivoted upon the plate 5 by the bolt 6 engaged through-said bearing and through the plate, and alsothrough the pivoted frame or arm 7, upon the free end of which the plate is secured. The opposite side edges of the plate 5 are bent downwardly against the corresponding sides of the pivoted arm 7, as shown at 8, while the outer end of said plate is bent back uponitself'to form a guide,in the form of an 'overhanging flange underneath which the lip 10 at the outer end of the bearing block 3 is engaged. The plate 5 also has formed therewith, atits outer side, the upstanding forked guide 11, within which is engaged the adjusting screw 12, which has its head positioned outwardly of the forked guide 11 while the annular groove 13 is formed in the screw near the head thereof to receive the forked portions of the guide and prevent longitudinal movement of the adjusting screw 12 within said guide. The adjusting screw has threaded engagement with a nut 14 within the inner end of the bearing block 3, whereby rotation of the adjusting screw 12 in one direction will turn the bearing block 3 in one direction upon the bolt 6 and thereby change the direction of the shaft 2 with the idler or tightener proper mounted thereon with respect to the shafts 15 and 16 upon which are mounted respectively the pulleys 17 and 18 around which the belt 19 is engaged. It will be evident that rotation of the adjusting screw 12 in a reverse direction will place the shaft 2 at a different angle and thereby cause the idler or tightener proper 1 to guide the belt accordingly.

The height of the end of the arm 7 upon which the casting 5 and bearing block 3 are mounted may be readily regulated by means of the pivot bolt 6. The arm 7 has extension strips 7 secured upon its side faces at one end and the arm 7 is pivoted at this end by means of the pivot pin 21 passed transversely through the extension strips 7 and through the upstanding ears of the bracket member 22, between which upstanding ears are positioned the free ends of the extension strips 7 it being understood that the main portion of the bracket member 22 is mounted upon a stationary portion of the engine or machine. The free end of the arm 7 is resiliently retained in adjusted position by means of the helical spring 23 which has one end secured to the longitudinal edge of said arm 7 while the opposite end of the spring is secured to the free bent end of the strip 24 which is preferably secured by its opposite end and central portion to the inner face of the stationary member 20, by means of the fastenings 25, either one of which may be removed and again secured in position after swinging the strip upon the remaining fastening to properly regulate the tension of the spring 23, as will be readily understood.

Lateral movement of the free end of the,

arm 7 is prevented by the standard 26 which is secured at its lower end to the outer face of the stationary member 20 and engaged through the guide strip 27 which has its opposite ends offset from the main portion thereof and bent outwardly in opposite directions, as shown at 28 and secured to the outer face of the arm 7, thereby allowing the guide strip to ride upon the standard 26 and guide the arm 7 during vertical movement of the same.

From the foregoing it will be apparent that I have provided an improved and simplified form of belt tightener and guide which may be readily employed upon various types of engines or machines and which will be highly efiicient and effective in use. It will be understood, however, that while I have shown the preferred embodiment of my invention, I do not wish to be limited to the specific form shown in the drawings and described in the specification as minor changes 1n the details of constructlon and arrangement or the various parts may be made within the scope of the appended claims without departing from the spirit of 111g underneath said flange and guided thereby, and means for holding said block in adjustable positions on the plate.

2. A belt tensioning device, including a movable arm, a plate carried thereby and formed with an overhanging flange, a block .pivotally mounted upon said plate and formed at one end with a lip extending underneath said flange and guided thereby in the movement of the block, a shaft carried by said block, a pulley mounted on said shaft, and means connected to said block and plate for adjusting the block on the plate and for holding the block in adjusted position.

3. A belt tensioning device, including a movable arm, a plate mounted thereon and formed with side flanges engaging the sides of said arm and at one end with an upstanding and overhanging flange, a block pivotally mounted on said plate and formed with a lip mounted underneath said flange and guided thereby, the plate being formed at I one side with an upstanding forked guide,

and an adjusting screw swiveled in said guide and having an operable connection with said block to adjust the same.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

ANDREW HAEUSER. Witnesses.

OLGA GEBHARDT, CHARLES F. PRUSSING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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