US784987A

US784987A - Belt-guide.

Info

Publication number: US784987A
Application number: US17759103A
Authority: US
Inventors: Joseph L Crisler
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-10-19
Filing date: 1903-10-19
Publication date: 1905-03-14
Anticipated expiration: 1922-03-14

Description

No. 784,987. PATENTED MAR. 14, 1905. I V J. L. GRISLER.

BELT GUIDE.

APPLICATION FILED OUT. 19, 1903.

2 SHEETS-SHEET 1.

[NVENTOR PATENTED MAR. 14, 1905.

v No. 784,987;

L L. 'GRISLBR.

BELT GUIDE.

APPLIUIATION FILED 00119, 1903.

2 SHEETS-SHEET 2 [NVENTOR fwwlbl. 6122/10' Kw m? W/FL.

Patented March 14, 190 5.

PATENT OFFICE.

JOSEPH L. CRISLER, OF PERTH, KANSAS.

BELT-GUIDE.

SPECIFICATION forming part of Letters Patent No. 784,987, dated March 14, 1905.

' Application filed October 19,1903. Serial No. 177,591.

To all whom it may concern:

Be it known that I, J osErH L. CRIsLER, a citizen of the United States, residing at Perth, in the county of Sumner and State of Kansas,

have invented a certain new and useful Belt- Guide, of which the following is a specification reference being had therein to the accompanying drawings.

This invention relates to belt-pulleys, and

while especially designed for use upon traction-engines it will be apparent as the description proceeds that the belt-guide of this invention may be used in connection with a beltpulley and belt on any machine, whether movable or stationary.

The object of the present invention is to provide a belt-guide which may be moved into and out of operative relation to a belt-pulley and belt running thereon for the purpose of preventing the belt from running off the pulley when the guide is properly disposed to the belt and pulley. WVhenever desired the beltguide may be shifted so as to allow the belt to be taken off the pulley and replaced thereon.

Another object of the invention is to so construct and mount the belt-guide that it is adaptable to pulleys and belts of varying widths and size and also adjustable relatively to its supporting-bracket, whereby the guide-rollers of 0 the belt-guide may be positioned with relation to the belt and pulley, according to the location of the pulley.

With the above and other objects in view, the nature of which will more fully appear as 3 5 the description proceeds, the invention consists in the novel construction, combination, and arrangement of parts, as hereinafter fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is 4 a sectional elevation of the belt-guide and the operating device therefor. Fig. 2 is a vertical longitudinal section through the base-plate of the belt-guide and also a portion of the supporting-bracket,showing the rock-shaft and guide-rollers, &c., in elevation. Fig. 3 is a detail perspective view of the segregated parts of the belt-guide. Fig. 4: is a detail section showing the manner of locking or holding the operating bar or rod. Figs. 5, 6, 7 and 8 are 5 respectively side, sectional, segregated perspective, and detail cross-sectional views of a modified form of belt-guide embodying the same principles.

Like reference-numerals designate corresponding parts in all the figures of the drawings.

The belt-guide contemplated in this invention comprises, essentially, a bracket 1, one end of which is shaped as shown at 2 to adapt the same to be fastened to the boiler of a traction-engine, while the outer or projecting portion 3 of the guide is provided with one or more longitudinal slots 4. for the reception of a corresponding number of clamping-bolts 5, which pass through openings 6 in the baseplate 7, which rests upon a portion 3 of the bracket and is therefore movable longitudinally of the bracket for the purpose of adjusting the belt-guide as a whole into proper relation to the rim of the belt-pulley, (shown at 8.)

Extending upward from the upper side of the base-plate 7 are bearing-lugs 9, the same being secured by suitable fasteners 10 to the base-plate, as shown in Fig. 3. Mounted in the bearing-lugs 9 is a rock-shaft 11, which is parallel to the shaft of the belt-pulley 8. EX- tending outward from the rock-shaft 11 are arms 12, provided at their inner ends with sleeves 13, surrounding the rock-shaft 11, and provided with binding-screws 14:, by means of which the arms 12 may be made fast on the rock-shaft and adjusted lengthwise thereon. The outer end portions of the arms 12 are bent substantially at right angles to form elbows 15, and these are reduced, as shown at 16, to form journals, upon which are rotatably mounted guide-rollers 17, provided at their inner ends with guard-flanges 18, the outer ends of the rollers being recessed, as shown at 19, to allow the retaining device or nuts 20 to lie within the body portions of the rollers, and thereby avoid projections.

In order to operate the rock-shaft 11 and swing the arms 12, one of said arms is prohollow cylinder provided at diametrically opposite points with slots 25, through which the bar 22 passes. One of its slots is slightly shallower than the other, thereby leaving a projecting lip or lug 26, which is adapted to engage either one of a pair of notches 27 in said bar. In order to maintain the engagement between the notches and lug, a tensionspring 28 is arranged within the housing 24, said spring exerting its tension to hold the bar 22 toward the lip or lug 26, as illustrated in Fig. 5. By overcoming the tension of said spring, however, and moving the bar 22 away from the lip 26 said bar may be moved lengthwise, and the guide-rollers 17 will thereby be moved toward or away from the rim of the belt-pulley in a manner that will be readily understood. g

The swinging movement of the arms 12 is limited by means of one or more stops 29, provided with sleeves 30, which embrace the rockshaft 11 and are held at any desired adjustment thereon by means of binding-screws 31. Complementary stop-lugs 32 extend out from the bearing-lugs 9, in which the rock-shaft is journaled, said stop-lugs serving to limit the rocking movement of the shaft in one direction, while faces 33 of the bearing-lugs 9 serve, in conjunction with the stops 29, to limit the rocking movement of the shaft 11 in the opposite direction.

From the foregoing description it will be seen that by means of the operating device and the manner in which the belt-guide as a whole is mounted the guide-rollers 17 may be moved toward and away from the belt and its pulley, the rollers being so positioned as to lie on opposite sides of the pulley-rim and close to or, if desired, in actual contact with the side edges of the rim, as indicated best in Figs. 2 and 3. The guide-rollers 17 when in operative relation to the belt-pulley cooperate with the opposite side edges of the belt and prevent any possibility of the belt escaping from the pulley, the flanges 18 also assisting in retaining the belt on the pulley in case of excessive looseness of the belt. It will also be seen that the arms 12 may be adjusted toward or away from each other, so as to adapt them to pulleys and belts of different widths; furthermore, that the base-plate may be adjusted in and out on the supporting-bracket 1 in order to accommodate the belt-guide as a whole to the location of the pulley; also, that by adjusting the stops 29 the limits of movement of the arms 12 may be regulated. It will also be observed that by means of the operating device, consisting of the bar 22 and its guide or housing 2 1, the belt-guide proper may be held fastened in either an operative or inoperative position for the purpose specified.

A simplified form of belt-guide embodying the same principles as that hereinabove described is illustrated in Figs. 5, 6, 7, and 8, the principal difference residing in the means for adjusting the bearings of the belt-guidebn the bracket and the means for limiting the swinging movements of the rock-shaft and rollercarrying arms. In said figures it will be noted that the base-plate is dispensed with and that the bearings are connected directly with the portion 3 of the bracket by means of bolts 34, which pass through the members of each bearing and also through longitudinal slots 35 in the bracket, so that by loosening said bolts the bearings for the rock-shaft 11 may be moved inward and outward on the bracket in order to bring the guide-rollers 17 into proper relation to the belt and pulley. The arms 12, which carry the rollers 17, may also be formed integrally with the rock-shaft 11, as clearly shown in Figs. 6 and 7. In the modified form of belt-guide each bearing for the rock-shaft 11 is composed of two

members

36 and 37 in the form of elbow-straps, which embrace the shaft 11 at opposite sides, as best shown in Fig. 8, the upper portions of the bearing members being connected by bolts or other suitable fasteners 38, while the opposite or lower ends are held together and clamped against the portion 3 of the bracket by means of the bolts 34. The member 36 is also provided with an inwardly-extending flange 39, which rests against the upper surface of the part 3 of the bracket, so as to properly position the two members of the bearing with relation to the bracket. In order to limit the upward swinging movement of the arms 12 and stop the guide-rollers 17 at the proper point, the bearing member 36 is made wider than the member 37 as shown in Figs. 6 and 7, whereby the arms 12 are adapted to swing clear of the members 37 and come in contact with the members 36 when the limit of upward movement is reached, as clearly shown in Figs. 5 and 6, the downward movement of the arms 12 being arrested by the same coming in contact with the portion 3 of the bracket.

The construction illustrated in Figs. 5, 6, 7, and 8 involves the same principles as that illustrated in the preceding figures, but shows a different way of carrying out the same idea and also provides a cheaper and simpler form of belt-guide.

It will thus be apparent that the belt-guide hereinabove described is susceptible of changes in the form, proportion, and minor details of construction, and I therefore reserve the right to make such changes as properly fall Within the scope of the appended claims.

Having thus described the invention, what I claim as new is 1. In a device of the character described, the combination with a belt-wheel and belt, of guide-wheels rotatable in planes transverse to the belt-wheel, each provided with a flange adapted to embrace a margin of the belt, and means to move 'said wheels toward and from the belt-wheel.

2. The combination with a belt-pulley, of a belt-guide comprising a rock-shaft parallel to the pulley-shaft, arms adjustable on the rockshat't, and guide-rollers mounted on journals at an angle to said arms and adapted to be moved thereby toward and away from the belt-pulley and to lie on opposite sides of the pulley-rim and close to the side edges of said rim.

3. The combination with a belt-pulley, of a belt-guide comprising a rock-shaft parallel to the pulley-shaft, arms on said shaft having journals extending at an angle thereto, and circumferentially-flanged guide rollers mounted on said journals and adapted to be moved toward and away from the belt-pulley and to lie at opposite sides of and close to the side edges of the rim of the belt-pulley.

4. Thecombination with a belt-pulley, of a belt-guide comprising a rock-shaft parallel to the pulley-shaft, guide-rollers carried by said rock-shaft and adapted to be moved toward and away from the belt-pulley, and to lie at opposite sides of and close to the rim of the pulley, and a stop for limiting the movement of the guide-rollers in opposite directions.

5. The combination with a belt-pulley, of a belt-guide comprising a rock-shaft parallel to the pulley-shaft, guide-rollers carried by said rock-shaft and adapted to be moved toward and away from the belt-pulley and to lie at opposite sides of and close to the side edges of the rim of the pulley, and stops for limiting the movement of the rock-shaft in opposite directions, said stops being adjustable on the rock-shaft.

6. The combination with a belt-pulley, of a belt-guide comprising a bracket, a base-plate adjustable on the bracket, a rock-shaft parallel to the pulley-shaft, and guide-rollers carried by said rock-shaft and adapted to be moved toward and away from the belt-pulley and to lie at opposite sides of and close to the side edges of the rim of the pulley.

7. The combination with a belt-pulley, of a belt-guide comprising a rock-shaft parallel to the pulley-shaft, arms on said rock-shaft, gu ide-rollers jou rnaled on said arms and adapted to be moved thereby toward and away from the belt-pulley and to lie on opposite sides of the pulley-rim and close to the side edges of said rim, an operating bar or rod connected to one of said arms, a guide or housing through which said guide or bar is adapted to slide, and a tension-spring engaging said rod or bar.

8. The combination with a belt-pulley, of a belt-guide comprising a rock-shaft parallel to the pulley-shaft, arms on said rock shaft, guide rollers journaled on said arms, and adapted to be moved toward and away from the belt-pulley and to lie at opposite sides of and close to the side edges of the pulley-rim, an operating-bar provided with notches, a slotted guide or housing through which said bar slides, a lip for engaging the notches of the operating-bar, and a spring within the guide or housing for maintaining an engagement between said lip and notches.

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

JOSEPH L. CRISLER.

Witnesses:

WV. J. BARNES, C. L. HARRIsoN.