US284703A - Gustavus h - Google Patents

Description

A UNITED STATES PATENT OEIIICEO GUsTAvUs II. zsoIIEcH, oE INnIANAroLIs, INDIANA'.y

BELT-TIGHTEN ER.

SPECIFICATION forming part of Letters Patent No. 284,705?, datedSeptember 11, 1.883,

` Application inea March 2, 1883. (No model.)

A To all whom it may concern:

the same as the angular motion of the arm H.

Uy present improvement provides, the same range of motion for the temporary changes of position of the parts due to vibration in working, but provides an additional adjustment not contained in the previous machine. By this additional adjustment the angular position of the arms E and H Inay be changedI at will within considerable limits without interfering with the temporary changes of position of the whole as the machinery is worked. I

The accompanying drawings form a part of this specification, and represent what I consider the best Ineans of carrying out the invention.

Figure 1 is a general side elevation, showing the entire mechanism. Fig. 2 represents a portionon a larger scale.

Similar letters of reference indicate like parts in both-the gures.

G is the bifurcated frame, rocking freely on the shaft g as a center, and carrying the tightening-pulley D, in the manner and with the advantages set forth in my said previous patent. All the parts not otherwise described Inay be exactly as described in the said previous patent of December 19, 1882.

H H2 is a bell-crank lever, made in two distinct parts. The part H is firmly and rigidly attached to the part H2, but with provision for adjustment, so as to conveniently vary the angle of these parts relatively to each other. The part H2 is formed with an open jaw or socket, h2, containing a transverse pin, H. The arm H stands in the socket h?, and turns on the pivot P therein.

W is a screw tapped through the upper porthe angle of the parts H2 and H', so that a given elevation of the arm H will press the tightening-pulley D so as to deflect the belt C to a greater extent than before, it is required simply to slacken the lower screw, 2, and to tighten the screw W. This will change the position of the parts and set them fast in the new position. to the action of the spring J may be the same as before, and the machinery will work in all respects with the same effect as before, but instead of being adapted only to a very moderate range of variation of tightness of the Abelt C, I can by this improvement adapt the device to a very wide range.

When the belt is new the screw NV will be inserted but a little ways, and the screw XV? will be set'inward nearly or quite to its full extent. As a consequence, the arm H will lie in the upper portionof the jaw h2. Then the belt is very loose the screw XV? must be let back and the screw XV inserted nearly or quite to its full extent. Thus the arm H Inay be shifted from the extreme upper to the extreme lower portion of the jaw h2, turning on its pivot H, and being rmly held in any position by the screws W W2.

Modiiicati ons may be made in the forms and proportions of the details. An open jaw may, as intimated, be substituted for the socket h?.

I. claim as my invention- The belt-tightener described, having the arm H and adjustment V WV, in `combination with the spring J, and with the frame G and suitable connections to the tightening-pulley D, as herein specied. t

In testimony whereof I have hereunto set my hand, at Indianapolis, this 18th day of January, 1883, in the presence of two subscribing witnesses.

GUSTAVUS H. ZSCHECH. Witnesses:

PETER SPITZEADEN, THEoDoRE REYER.

y The range of motion due p

Images